CN106585677A - Small carrier with functions of flat ground transportation, stair climbing and goods lifting - Google Patents

Abstract

The utility model relates to a transport trolley which has the functions of transporting on level ground, climbing stairs and lifting goods, belongs to the technical field of goods handling equipment, and is used for transporting goods. The technical solution is: the stair-climbing part, the level ground walking part, and the lifting part. The three parts can respectively perform different functions of climbing stairs, walking on the ground and lifting goods. During use, the three parts can be switched according to needs. The stair climbing part adopts triangular wheel structure, and the triangular wheel is driven by the motor and gear to perform stair climbing operation; the walking part on flat ground is driven by the motor and gear to drive the walking wheel to walk; the lifting part can lift the goods through the electric push rod, and through the front fork and Angled fixtures allow for easy loading and unloading of cargo. The invention is the first creation of a cargo transportation device, which solves the problem of transporting large cargo up and down in low-rise buildings, greatly reduces the labor intensity of logistics delivery personnel, improves the work efficiency of logistics transportation, and has significant economic and social benefits.

Description

A handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods

technical field

The invention relates to a transport trolley with multiple functions of transporting and transporting goods, and belongs to the technical field of goods handling equipment.

Background technique

In recent years, with the rapid development of e-commerce, the logistics industry has developed rapidly, and the market size of the express delivery industry has continued to expand. At the same time, the online sales of large-scale home appliances are also increasing year by year, but the development of online shopping for large-scale commodities is easily restricted by logistics and distribution. The difficulty lies in the last-mile delivery process of goods. According to the survey, there are still a large number of low-rise buildings in the city without elevators. Traditional power-assisted vehicles can only transport goods on the ground, and cannot directly transport them to high-rise buildings. It is very laborious to deliver large-scale goods to these users without elevators. The work intensity of the courier delays the delivery time and often causes conflicts between the courier and the user. Therefore, it is very necessary to take effective measures to solve the problem of quickly distributing bulky goods to various household environments as soon as possible.

Contents of the invention

The technical problem to be solved by the present invention is to provide a transport trolley with the functions of transporting on flat ground, climbing stairs and lifting goods. For loading and unloading, it is convenient for the handling of large goods in the building area.

The technical scheme that solves the above-mentioned technical problem is:

A handling trolley with the functions of transporting on flat ground, climbing stairs and lifting goods. It includes a stair climbing part, a flat ground walking part, and a lifting part. The stair climbing part includes two triangular wheels and a triangular axle. The two ends of the wheel shaft, the flat walking part includes a support plate, a rear wheel shaft, and a walking wheel. The support plate is connected to the triangular wheel shaft of the stair climbing part. The rear wheel shaft is installed on the support plate, and the two walking wheels are respectively installed at both ends of the rear wheel shaft. , the lifting part includes a load-bearing rod, a lifting rod, a load rod, an angle fixing device, a telescopic front fork, and an electric push rod. Connected by the rotating shaft, the other end of the lifting rod is connected with the angle fixing device, the angle fixing device is installed at the lower end of the loading rod, the telescopic front fork is installed at the lower end of the angle fixing device, and the electric push rod is installed between the load-bearing rod and the lifting rod. The motor is installed on the support plate of the stair climbing part, and the motor is connected with the triangular wheel shaft and the rear wheel shaft through gears and switching devices.

The above-mentioned handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods, the triangular wheels are composed of nylon wheels, outer connecting plates, outer rotating plates, adjustment bayonets, pins, inner connecting plates, inner fixing plates, and axles. There is a shaft hole in the middle of the fixed plate and the outer rotating plate, which is set on the triangular wheel shaft of the stair climbing part. The two outer rotating plates are respectively located on both sides of the inner fixing plate. The inner fixing plate is fixedly connected with the triangular wheel shaft. The outer rotating plate and the triangular wheel shaft Rotatable connection, one end of the outer connecting plate and one end of the inner connecting plate are connected with the nylon wheel through the wheel shaft on both sides of the nylon wheel, and the other ends of the two outer connecting plates are respectively connected with the two outer rotating plates through pins , the other ends of the two inner connecting plates are respectively connected with both sides of the inner fixing plate through pins, and the outer rotating plate and the inner fixing plate are connected through fixing holes and adjusting bayonet pins.

The above-mentioned handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods has a fixing hole on the inner fixing plate of the triangular wheel, and three adjusting holes on the outer rotating plate. The three adjusting holes are arranged in sequence, and the three adjusting holes are outside When the rotating plate rotates, it can be opposite to the fixing holes of the internal fixing plate respectively, and the adjusting bayonet is detachably connected with the fixing hole and the adjusting hole.

The above-mentioned handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods, the inner fixing plate and the outer rotating plate of the triangular wheel respectively have three pin holes, and the three pin holes surround the center of the inner fixing plate and the outer rotating plate. Distributed at equal intervals along the circumference, the three pin holes of the outer rotating plate are respectively connected with one end of the outer connecting plate of the three nylon wheels through pin shafts, and the three pin holes of the inner fixed plate are respectively connected with the ends of the three nylon wheels. One end of the inner connecting plate is connected by a pin shaft.

The above-mentioned handling trolley with the functions of level ground transportation, climbing stairs and lifting goods, the level ground walking part includes two walking wheels, batteries, motors, bearings, rear wheel shafts, right support plates, middle support plates, left support plates, and travel gears , gear set, sliding gear, shift fork, two traveling wheels are drive wheel and driven wheel respectively, right support plate, middle support plate, left support plate are arranged in parallel, right support plate, middle support plate, left support plate and triangular wheel shaft Vertically opposite, one end of them has a shaft hole set on the triangular wheel shaft, the battery, the motor are fixedly connected with the middle support plate and the right support plate, the motor shaft is connected with the sliding gear through a coupling, the sliding gear shaft, each gear shaft of the gear set Vertically installed between the left support plate and the middle support plate, one end of the gear set meshes with the fixed gear of the triangular wheel shaft, the other end of the gear set is opposite to the sliding gear, the driving wheel is fixedly connected to one end of the rear wheel shaft, and the driven wheel passes through the bearing Connected to the other end of the rear wheel shaft, the traveling gear is fixedly set on the rear wheel shaft, the sliding gear is slidingly connected to the sliding gear shaft, the two sliding positions of the sliding gear are respectively opposite to the gear set and the traveling gear, and the cross bar of the shift fork is set on the On the top of the middle support plate and the left support plate, the cross bar of the shift fork is slidingly connected with the middle support plate and the left support plate, and the plectrum of the shift fork is embedded in the circumferential shifting groove of the sliding gear.

The above-mentioned handling trolley with the functions of transporting on level ground, climbing stairs and lifting goods, the walking part on level ground also has a ratchet connected to the lifting part, a stop catch, a support frame, a slide bar, a chute, a spring, and two support frames The lower ends of the two support frames are respectively connected with the left support plate and the right support plate through the rotating shaft, and the upper ends of the two support frames are respectively fixedly connected with the two ends of the slide bar. The two chutes are respectively fixed on the lower part of the load-bearing rod of the lifting part. The two ends of the sliding rod are slidingly matched with the chute. There is a card slot in the chute that can fix the sliding rod. The ratchet is fixedly connected with one end of the triangular wheel shaft. The stop claw The rotating shaft at the rear portion is fixedly connected to the lower end of the chute, the front portion of the stop pawl engages with the teeth of the ratchet, and the spring is connected between the stop pawl and the chute.

The above-mentioned handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods, the lifting part includes a handle bar, a load-bearing bar, an electric push rod, an electric push rod lower support, an electric push rod upper support, a lifting rod, a loading rod, Angle fixing device, telescopic front fork, the two ends of the handle rod are fixedly connected between the upper ends of two parallel load-bearing rods, the upper ends of the two load-bearing rods are respectively connected with one end of two parallel lifting rods through the rotating shaft, and the two load-bearing rods The lower end is connected to the triangular wheel shaft in rotation, the other ends of the two lifting rods are connected with two parallel loading rods through the angle fixing device, the telescopic front fork is installed at the lower end of the angle fixing device, and the two ends of the electric push rod are respectively It is rotationally connected with two load-bearing rods, and the two ends of the upper support of the electric push rod are respectively rotationally connected with two lifting rods, and the upper end and lower end of the electric push rod are respectively vertical to the middle of the upper support of the electric push rod and the lower support of the electric push rod Fixed connection.

The above-mentioned handling trolley with the functions of level ground transportation, climbing stairs and lifting goods, the angle fixing device includes the lower joint of the lifting rod, the outer baffle of the slider, the slider, the inner baffle of the slider, the positioning pin, the return spring, the spiral cylinder , the slider shaft, the lower joint of the lifting rod is fixedly connected with the lifting rod, and the lower joint of the lifting rod is rotationally connected with the slider shaft. The slider is embedded in the chute on the load rod, and the slider and the chute are in a sliding fit. The inner baffle of the slider and the outer baffle of the slider are located on the outside of the chute. The inner baffle of the slider and the outer baffle of the slider They are respectively fixedly connected with the slider, the positioning pin and the slider shaft are slidingly connected, the return spring cooperates with the positioning pin, and there are multiple holes on the slider outer baffle, slider, and slider inner baffle to cooperate with the positioning pin. Corresponding pin holes are arranged on the lower joint of the lifting rod, a helical thread is arranged on the slider shaft, two helical cylinders are sleeved on the helical wires on the slider shaft, and the return spring is connected with the helical cylinder.

The above-mentioned handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods, the telescopic front fork includes a front fork pin, a front fork nut, a front fork, a front fork bolt, a front fork shaft, a folding insert, a loading rod and a front fork The shaft is fixedly connected, the front fork is connected to the front fork shaft in rotation, and the front fork and the front fork shaft are slidingly fitted in the axial direction, the front fork pin is fixedly connected to the front fork, and the front fork pin can be inserted into the corresponding hole on the loading rod. The front fork bolt is threadedly connected with the front fork shaft, and the folding insert is connected with the front fork in rotation.

The beneficial effects of the present invention are:

The invention includes a stair-climbing part, a flat-ground walking part and a lifting part. The three parts can respectively perform different functions of climbing stairs, walking on the ground and lifting goods. During use, the three parts can be switched according to needs. The stair climbing part adopts triangular wheel structure, and the triangular wheel is driven by the motor and gear to perform stair climbing operation; the walking part on flat ground is driven by the motor and gear to drive the walking wheel to walk; the lifting part can lift the goods through the electric push rod, and through the front fork and Angled fixtures allow for easy loading and unloading of cargo.

The invention is the first creation of a cargo transportation device, which solves the problem of transporting large cargo up and down in low-rise buildings, greatly reduces the labor intensity of logistics delivery personnel, improves the work efficiency of logistics transportation, and has significant economic and social benefits. It is of positive significance to promote the development of logistics and transportation.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the structural representation of stair climbing part;

Fig. 3 is a schematic diagram of the overall structure of the triangular wheel;

Fig. 4 is a schematic diagram of the exploded structure of the triangular wheel;

Fig. 5 is a comparative schematic diagram of triangular wheel adjustment;

Fig. 6 is a schematic structural view of the walking part on flat ground;

Fig. 7 is a partial view of Fig. 6;

Fig. 8 is a structural schematic diagram of the lifting part;

Fig. 9 is a schematic diagram of the overall structure of the angle fixing device and the telescopic front fork;

Fig. 10 is a schematic diagram of the exploded structure of the angle fixing device and the telescopic front fork;

Fig. 11 is a schematic diagram of the folded state of the present invention;

Fig. 12 is a schematic diagram of the walking state on level ground of the present invention;

Fig. 13 is a schematic diagram of the stair climbing state of the present invention;

Fig. 14 is a schematic diagram of the state of lifting goods of the present invention;

Fig. 15 is a schematic diagram of the state of putting down the goods in the present invention.

The markings in the figure are as follows: Stair climbing part 1, level ground walking part 2, lifting part 3;

Left triangle wheel 1100, triangle axle 1200, right tripod 1300, nylon wheel 1101, outer connecting plate 1102, outer rotating plate 1103, adjustment bayonet pin 1104, pin 1105, inner connecting plate 1106, inner fixing plate 1107, wheel axle 1108 ;

Motor 2001, bearing 2002, driven wheel 2003, rear axle 2004, right support plate 2005, shift fork 2006, middle support plate 2007, gear 2008, left support plate 2009, drive wheel 2010, sliding gear 2011, gear set 2012, ratchet 2013 , stop catch 2014, support frame 2015, slide bar 2016, chute 2017, battery 2018, spring 2019;

Handle rod 3001, load-bearing rod 3002, electric push rod 3003, electric push rod lower support 3004, electric push rod upper support 3005, lifting rod 3006, loading rod 3007;

Angle fixing device 3100, lifting rod lower joint 3101, slider outer baffle 3102, slider 3103, slider inner baffle 3104, positioning pin 3105, return spring 3106, spiral cylinder 3107, slider shaft 3108

Telescopic front fork 3200, front fork pin 3201, front fork nut 3202, front fork 3203, front fork bolt 3204, front fork shaft 3205, folding insert 3206.

detailed description

Figure 1 shows that the present invention includes a stair climbing part 1, a level ground walking part 2, and a lifting part 3. The three parts can respectively complete the different functions of climbing stairs, walking on the ground and lifting goods. to switch between.

FIG. 2 shows that the stair climbing part 1 includes a left triangular wheel 1100 , a triangular wheel shaft 1200 , and a right tripod 1300 . Wherein the left end of the triangular wheel shaft 1200 is fixedly connected with the left side triangular wheel 1100, the right end of the triangular wheel shaft 1200 is fixedly connected with the right side tripod wheel 1300, and the structure of the left side triangular wheel 1100 and the right side tripod wheel 1300 is the same.

3 and 4 show that the triangular wheel includes a nylon wheel 1101, an outer connecting plate 1102, an outer rotating plate 1103, an adjustment bayonet pin 1104, a pin 1105, an inner connecting plate 1106, an inner fixing plate 1107, and an axle 1108. Among them, the inner fixed plate 1107 and the outer rotating plate 1103 have a shaft hole set on the triangular wheel shaft 1200 of the stair climbing part 1, and the two outer rotating plates 1103 are respectively located on both sides of the inner fixing plate 1107, and can rotate relative to the inner fixing plate 1107 . The inner fixed plate 1107 is fixedly connected with the triangular wheel shaft 1200, the outer rotating plate 1103 is rotatably connected with the triangular wheel shaft 1200, and the two sides of the nylon wheel 1101 respectively have an outer connecting plate 1102 and one end of the inner connecting plate 1106 through the wheel shaft 1108. The nylon wheels 1101 are connected, the other ends of the two outer connecting plates 1102 are respectively connected with the two outer rotating plates 1103 through pins 1105, and the other ends of the two inner connecting plates 1106 are respectively connected with both sides of the inner fixed plate 1107 through pins 1105 Connected, the outer rotating plate 1103 and the inner fixing plate 1107 are connected through fixing holes and adjusting bayonet pins 1104 .

Figures 3 and 4 show that there is a fixing hole on the inner fixing plate 1107 of the triangular wheel, and there are three adjusting holes on the outer rotating plate 1103, the three adjusting holes are arranged in sequence, and the three adjusting holes can be respectively connected with the internal fixing when the outer rotating plate 1103 rotates. The fixing holes of the plate 1107 are opposite, and the adjusting bayonet 1104 can be pulled out or inserted into the aligned holes to fix the relative position of the inner fixing plate 1107 and the outer rotating plate 1103 .

Figure 5 shows that the triangular wheels have the function of adjusting the wheelbase to adapt to stairs of different heights. There is a fixing hole on the inner fixing plate 1107 of the triangular wheel, and there are three adjusting holes on the outer rotating plate 1103, the three adjusting holes are arranged in sequence, and the three adjusting holes can be respectively opposite to the fixing holes of the inner fixing plate 1107 when the outer rotating plate 1103 rotates , the adjustment bayonet 1104 is detachably connected to the fixing hole and the adjustment hole. The specific implementation method is: pull out the bayonet adjusting pin 1104 from the holes of the outer rotating plate 1103 and the inner fixing plate 1107, turn the outer rotating plate 1103 counterclockwise, and drive the outer connecting plate 1102, the nylon wheel 1101, and the inner connecting plate in turn. 1106 moves so that the distance between the three nylon wheels 1101 can be adjusted.

Figures 6 and 7 show that the flat ground walking part 2 includes two road wheels, battery 2018, motor 2001, bearing 2002, rear wheel shaft 2004, right support plate 2005, middle support plate 2007, left support plate 2009, travel gear 2008, gear set 2012, the sliding gear 2011, the shift fork 2006, and the two traveling wheels are the driving wheel 2010 and the driven wheel 2003 respectively. Right support plate 2005, middle support plate 2007, left support plate 2009 are arranged in parallel, right support plate 2005, middle support plate 2007, left support plate and triangular wheel shaft 1200 are vertically opposite, and their one end has shaft hole to be sleeved on the triangular wheel shaft 1200. Storage battery 2018, motor 2001 are fixedly connected with middle support plate 2007, right support plate 2005, and motor shaft is connected with sliding gear 2011 through coupling. Each gear shaft of the sliding gear shaft and the gear set 2012 is installed vertically between the left support plate 2009 and the middle support plate. One end of the gear set 2012 is meshed with the fixed gear of the triangular wheel shaft 1200, and the other end of the gear set 2012 is engaged with the sliding gear 2011. relatively. The travel gear 2008 is fixedly set on the rear wheel shaft 2004, the sliding gear 2011 is slidingly connected to the sliding gear shaft, and the two sliding positions of the sliding gear 2011 are opposite to the gear set 2012 and the travel gear 2008 respectively. When walking on flat ground, the sliding gear 2001 slides to a position meshed with the walking gear 2008; when climbing stairs, the sliding gear 2011 slides to a position meshing with the gear set 2012;

Figures 6 and 7 show that the crossbar of the shift fork 2006 is erected on the middle support plate 2007 and the top of the left support plate 2009, the cross bar of the shift fork 2006 is slidingly connected with the middle support plate 2007 and the left support plate 2009, and the shifting of the shift fork 2006 The sheet is embedded in the circumferential shifting groove of the sliding gear 2011. Toggle the shift fork 2006 to different positions to the left and right respectively to realize switching.

6 and 7 show that the driving wheel 2010 is fixedly connected to one end of the rear wheel shaft 2004, and the driven wheel 2003 is connected to the other end of the rear wheel shaft 2004 through the bearing 2002. This structure can complete the turning action.

Figures 6 and 7 show that the flat walking part 2 also has a ratchet 2013 connected to the lifting part 3, a stop catch 2014, a support frame 2015, a slide bar 2016, a chute 2017, and a spring 2019. The lower ends of the two support frames 2015 are respectively It is connected with the left support plate 2009 and the right support plate 2005 through rotating shafts, and the upper ends of the two support frames 2015 are fixedly connected with the two ends of the slide bar 2016 respectively, and the two ends of the slide bar 2016 protrude outwards and respectively insert into two chute 2017 Among them, two sliding grooves 2017 are respectively fixed on the lower part of the load-bearing rod 3002 of the lifting part 3, and the sliding rod 2016 can slide in the sliding grooves 2017, and there is a slot for fixing the sliding rod 2016 in the sliding groove 2017. The ratchet 2013 is fixedly connected to one end of the triangular wheel shaft 1200, the rotating shaft at the rear of the stop pawl 2014 is fixedly connected to the lower end of the chute 2017, the front part of the stop pawl 2014 meshes with the teeth of the ratchet 2013, and the spring 2019 is connected to the stop Between claw 2014 and chute 2017. The stop pawl 2014 can stop the rotation of the ratchet 2013 and the triangular wheel shaft 1200 .

Figure 8 shows that the lifting part 3 includes a handle bar 3001, a load-bearing bar 3002, an electric push rod 3003, an electric push rod lower support 3004, an electric push rod upper support 3005, a lifting rod 3006, a loading rod 3007, an angle fixing device 3100, a telescopic Front fork 3200. The two ends of the handle bar 3001 are fixedly connected between the upper ends of two parallel load-bearing rods 3002, the upper ends of the two load-bearing rods 3002 are respectively connected with one ends of two parallel lifting rods 3006 through the rotating shaft, and the lower ends of the two load-bearing rods 3002 are connected to the triangle The wheel shaft 1200 is connected in rotation, the other ends of the two lifting rods 3006 are connected with two parallel loading rods 3007 through the angle fixing device 3100, the telescopic front fork 3200 is installed at the lower end of the angle fixing device 3100, and the electric push rod lower support 3004 The two ends of the two load-bearing rods 3002 are rotationally connected, the two ends of the electric push rod upper support 3005 are respectively rotationally connected with two lifting rods 3006, the upper end and the lower end of the electric push rod 3003 are respectively connected to the electric push rod upper support 3005 It is vertically and fixedly connected with the middle part of the lower support 3004 of the electric push rod.

Figures 9 and 10 show that the angle fixing device 3100 includes the lower joint 3101 of the lifting rod, the outer baffle plate 3102 of the slider, the slider 3103, the inner baffle plate 3104 of the slider, the positioning pin 3105, the return spring 3106, the spiral cylinder 3107, the slider shaft 3108. The lower joint 3101 of the lifting rod is fixedly connected with the lifting rod 3006, and the lower joint 3101 of the lifting rod is connected with the slider shaft 3108 in rotation. Connected by rotation, the slide block 3103 is embedded in the chute on the loading rod 3007, and the slide block 3103 can slide up and down in the chute. The slider inner baffle 3104 and the slider outer baffle 3102 are located on the outside of the chute, the slider inner baffle 3104 and the slider outer baffle are fixedly connected with the slider 3103 respectively, and the slider 3103 is limited in the chute, and cannot Pull out to the sides. The positioning pin 3105 is slidingly connected to the slider shaft 3108, and the return spring 3106 cooperates with the positioning pin 3105. There are multiple holes for matching the positioning pin 3105 on the slider outer baffle 3102, the slider 3103, and the slider inner baffle 3104. , there are corresponding pin holes on the lower joint 3101 of the lifting rod. When the lifting rod 3006 and the sliding block 3103 form a certain angle, the positioning pin 3105 can pass through all the corresponding holes, and the angle can be determined, so that the angle between the loading rod 3007 and the lifting rod 3006 can be fixed. The two helical cylinders 3107 are sleeved on the helical line of the slider shaft 3108, and the two helical cylinders 3107 are in contact along the helical lines. When they rotate relative to each other, the helical cylinders 3107 on both sides will be pushed outward along the helical lines, and then the positioning pin 3105 will pass through. Through the corresponding hole, the screw cylinder 3107 is reset under the action of the return spring 3106 when reversing.

9 and 10 show that the telescopic front fork 3200 includes a front fork pin 3201, a front fork nut 3202, a front fork 3203, a front fork bolt 3204, a front fork shaft 3205, and a folding insert 3206. The loading rod 3007 is fixedly connected to the front fork shaft 3205, the front fork 3203 is rotationally connected to the front fork shaft 3205, and the front fork 3203 and the front fork shaft 3205 are slidingly fitted in the axial direction, and the front fork pin 3201 is fixedly connected to the front fork 3203, The front fork pin 3201 can be inserted into the corresponding hole on the loading rod 3007, the front fork bolt 3204 is threaded with the front fork shaft 3205, and the folding insert 3206 is connected with the front fork 3203 for rotation.

Figure 11 shows that the present invention can be folded as a whole and is convenient to carry.

The shrinking method of the level ground walking part 2 is as follows: the slide bar 2016 slides upward along the chute 2017, and then the support frame 2015 pulls the level ground walking part 2 to rotate around the triangular wheel shaft 1200, and turns to the level ground walking part 2 to contact the load-bearing bar 3002. The shrinking method of the lifting part 3 is as follows: the slider 3103 slides to the lower end of the chute on the loading rod 3007, the loading rod 3007 rotates around the slider shaft 3205 and contacts the lifting rod 3006, the electric push rod 3003 shrinks, and the lifting rod 3006 rotates around The handle bar 3001 rotates and contacts the bearing bar 3002 . The folding insert 3206 rotates down around the bolt 3204 to contact the front fork 3203 . The bolt 3204 is loosened, and the front fork 3203 rotates around the front fork shaft 3205 to coincide with the loading rod 3007.

Figure 12 shows that the level ground walking state of the present invention is as follows:

The level ground walking part 2 is launched, and the steps are opposite to the above-mentioned shrinking scheme. The front fork 3203 is rotated to a 90-degree angle position with the loading rod 3007, and the positioning pin 3201 fixes it. In the state of walking on flat ground, lift the handle bar 3001, the front fork 3203 fits the ground, fix the large cargo on the front fork 3203, drop the handle bar 3001, make the driven wheel 2003 and the driving wheel 2010 contact the ground, and move The shift fork 2006 meshes the slide gear 2011 with the gear 2008 . The torque of motor 2001 is passed to driving wheel 2010 through sliding gear 2011, gear 2008, driving wheel 2010, and the whole is advanced. When needing to turn, press the handle bar 3001 to make the stair climbing part 1000 off the ground, only the driven wheel 2003 and the driving wheel 2010 are on the ground, and the driven wheel 2003 is the driven wheel to complete the differential steering movement.

Figure 13 shows that the stair climbing state of the present invention is as follows:

Walking on level ground part 2 is put away. The front fork 3203 is rotated to a 90-degree angle position with the loading rod 3007, and the positioning pin 3201 fixes it. Toggle the shift fork 2006 to make the sliding gear 2011 mesh with the gear set 2012 . The torque of the motor 2001 is transmitted to the stair-climbing part 1 through the sliding gear 2011 and the gear set 2012, and the stair-climbing part 1 turns over, and the nylon wheel 1101 contacts with the next step in turn, so that the whole body does the stair-climbing motion. When a turn is required, the stop catch 2014 fixes the ratchet 2013, and then the triangular wheel shaft 1200 stops rotating, and the handle bar 3001 is pressed to lift the front two nylon wheels 1101 off the ground, leaving only the rear two nylon wheels 1101 on the ground. Can complete differential steering movement.

Figures 14 and 15 show that the lifting of the present invention and the state of putting down the goods are as follows:

On the basis of the flat ground transportation state, the lifting part 3 is unfolded; the electric push rod 3003 is pushed out, the lifting rod 3006 rotates around the handle rod 3001 to form a certain angle with the load-bearing rod 3002, and the slider 3103 slides to the top of the chute on the loading rod 3007, The loading rod 3007 rotates around the slider shaft 3205 and forms a certain angle with the lifting rod 3006. The front fork pin 3201 fixes the angle between the loading rod 3007 and the lifting rod 3006, and the folding insert 3206 rotates around the bolt 3204 to form a straight line with the front fork 3203. Then the goods are fixed on the front fork 3203, and the electric push rod 3003 is released to lift the goods to the required height. Then the fixing of the goods and the front fork 3203 is released, the folding insert 3206 rotates, and the goods slide down along the folding insert 3206.

Claims (9)

1. A handling trolley with the functions of transporting on level ground, climbing stairs and lifting goods, characterized in that it includes a stair climbing part (1), a level ground walking part (2), a lifting part (3), and a stair climbing part (1 ) includes two triangular wheels and a triangular wheel shaft (1200), and the two triangular wheels are respectively installed at both ends of the triangular wheel shaft (1200), and the flat ground walking part (2) includes a support plate, a rear wheel shaft (2004), a walking wheel, and a support plate It is connected with the triangular wheel shaft (1200) of the stair climbing part (1), the rear wheel shaft (2004) is installed on the support plate, and the two walking wheels are respectively installed at both ends of the rear wheel shaft (2004), and the lifting part (3) includes load-bearing Rod (3002), lifting rod (3006), loading rod (3007), angle fixing device (3100), telescopic front fork (3200), electric push rod (3003), the lower end of the load-bearing rod (3002) and the climbing part (1) The triangular axle (1200) is connected by rotation, the upper end of the load-bearing rod (3002) is connected with one end of the lifting rod (3006) through a rotating shaft, and the other end of the lifting rod (3006) is connected with the angle fixing device (3100), The angle fixing device (3100) is installed on the lower end of the loading rod (3007), the telescopic front fork (3200) is installed on the lower end of the angle fixing device (3100), and the electric push rod (3003) is installed on the load-bearing rod (3002) and the lifting rod ( 3006), the motor (2001) is installed on the support plate of the stair climbing part (1), and the motor (2001) is connected with the triangular wheel shaft (1200) and the rear wheel shaft (2004) respectively through gears and switching devices. 2. The handling trolley with the functions of transporting on flat ground, climbing stairs and lifting goods according to claim 1, characterized in that: the triangular wheels are composed of nylon wheels (1101), outer connecting plates (1102), outer rotating plates ( 1103), adjusting bayonet pin (1104), pin (1105), inner connecting plate (1106), inner fixing plate (1107), wheel axle (1108), there is a The shaft hole is set on the triangular axle (1200) of the stair climbing part (1), and the two outer rotating plates (1103) are respectively located on both sides of the inner fixing plate (1107). The inner fixing plate (1107) and the triangular axle (1200) Fixed connection, the outer rotating plate (1103) is rotatably connected to the triangular wheel shaft (1200), and the two sides of the nylon wheel (1101) respectively have an outer connecting plate (1102) and one end of the inner connecting plate (1106) through the wheel shaft ( 1108) are jointly connected with the nylon wheel (1101), the other ends of the two outer connecting plates (1102) are respectively connected with the two outer rotating plates (1103) through pins (1105), and the two inner connecting plates (1106) The other end is respectively connected with both sides of the inner fixing plate (1107) through pins (1105), and the outer rotating plate (1103) and the inner fixing plate (1107) are connected through fixing holes and adjusting bayonet pins (1104). 3. The handling trolley with the functions of transporting on flat ground, climbing stairs and lifting goods according to claim 2, characterized in that: there is a fixing hole on the inner fixing plate (1107) of the triangular wheel, and the outer rotating plate (1103) There are three adjustment holes, the three adjustment holes are arranged in sequence, and the three adjustment holes can respectively be opposite to the fixing holes of the inner fixing plate (1107) when the outer rotating plate (1103) rotates, and the adjusting bayonet (1104) and the fixing hole and the adjustment Hole for detachable connection. 4. The handling trolley with the functions of transporting on flat ground, climbing stairs and lifting goods according to claim 3, characterized in that: there are three Pin shaft holes, three pin shaft holes surround the inner fixed plate (1107) and the center of the outer rotating plate (1103) and are distributed at equal intervals along the circumference, and the three pin shaft holes of the outer rotating plate (1103) are respectively connected with the three nylon wheels ( One end of the outer connecting plate (1102) of 1101) is connected with a pin shaft, and the three pin shaft holes of the inner fixing plate (1107) are respectively connected with one end of the inner connecting plate (1106) of the three nylon wheels (1101) through a pin shaft connected. 5. The handling trolley with the functions of transporting on level ground, climbing stairs and lifting goods according to claim 4, characterized in that: the walking part (2) on level ground includes two walking wheels, a battery (2018), a motor (2001 ), bearings (2002), rear axle (2004), right support plate (2005), middle support plate (2007), left support plate (2009), travel gear (2008), gear set (2012), sliding gear (2011 ), the shift fork (2006), the two traveling wheels are the drive wheel (2010) and the driven wheel (2003), the right support plate (2005), the middle support plate (2007), the left support plate (2009) are arranged in parallel, the right The support plate (2005), the middle support plate (2007), the left support plate (2009) are vertically opposite to the triangular wheel shaft (1200), and one end of them has a shaft hole set on the triangular wheel shaft (1200), the battery (2018), the motor ( 2001) is fixedly connected with the middle support plate (2007) and the right support plate (2005), the motor shaft is connected with the sliding gear (2011) through a coupling, and the sliding gear shaft and each gear shaft of the gear set (2012) are installed vertically on the left Between the support plate (2009) and the middle support plate (2007), one end of the gear set (2012) meshes with the fixed gear of the triangle axle (1200), and the other end of the gear set (2012) is opposite to the sliding gear (2011), The driving wheel (2010) is fixedly connected to one end of the rear wheel shaft (2004), the driven wheel (2003) is connected to the other end of the rear wheel shaft (2004) through a bearing (2002), and the traveling gear (2008) is fixedly set on the rear wheel shaft (2004) Above, the sliding gear (2011) is slidingly connected to the sliding gear shaft, the two sliding positions of the sliding gear (2011) are respectively opposite to the gear set (2012) and the traveling gear (2008), and the cross bar of the shift fork (2006) is erected on The upper part of the middle support plate (2007) and the left support plate (2009), the cross bar of the shift fork (2006) is slidingly connected with the middle support plate (2007) and the left support plate (2009), and the paddle of the shift fork (2006) is embedded In the circumferential dial groove of the sliding gear (2011). 6. The handling trolley with the functions of transporting on level ground, climbing stairs and lifting goods according to claim 5, characterized in that: said level ground walking part (2) also has a ratchet (2013) connected with the lifting part (3) ), stop catch (2014), support frame (2015), slide bar (2016), chute (2017), spring (2019), the lower ends of the two support frames (2015) are respectively connected with the left support plate (2009), The right support plate (2005) is connected through the rotation of the rotating shaft, and the upper ends of the two support frames (2015) are respectively fixedly connected with the two ends of the slide bar (2016). In the groove (2017), the two chute (2017) are respectively fixed on the lower part of the load-bearing rod (3002) of the lifting part (3), and the two ends of the slide rod (2016) are in sliding fit with the chute (2017), and the chute ( 2017) has a card slot for fixing the slide bar (2016), the ratchet (2013) is fixedly connected to one end of the triangular wheel shaft (1200), and the rotating shaft at the rear of the stop pawl (2014) is fixedly connected to the chute (2017) At the lower end, the front part of the stop claw (2014) is engaged with the teeth of the ratchet (2013), and the spring (2019) is connected between the stop claw (2014) and the chute (2017). 7. The handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods according to claim 6, characterized in that: the lifting part (3) includes a handle bar (3001), a load-bearing bar (3002), an electric pusher Rod (3003), electric push rod lower support (3004), electric push rod upper support (3005), lifting rod (3006), loading rod (3007), angle fixing device (3100), telescopic front fork (3200), The two ends of the handle rod (3001) are fixedly connected between the upper ends of two parallel load-bearing rods (3002), and the upper ends of the two load-bearing rods (3002) are respectively connected to one end of two parallel lifting rods (3006) through a rotating shaft, The lower ends of the two load-bearing rods (3002) are rotationally connected to the triangular axles (1200), and the other ends of the two lifting rods (3006) are connected to two parallel loading rods (3007) through an angle fixing device (3100), telescopic The front fork (3200) is installed at the lower end of the angle fixing device (3100), the two ends of the lower support (3004) of the electric push rod are respectively connected to the two load-bearing rods (3002) in rotation, and the two ends of the upper support (3005) of the electric push rod The upper end and the lower end of the electric push rod (3003) are vertically fixedly connected with the middle part of the electric push rod upper support (3005) and the electric push rod lower support (3004) respectively. 8. The handling trolley with the functions of transporting on the ground, climbing stairs and lifting goods according to claim 7, characterized in that: the angle fixing device (3100) includes the lower joint of the lifting rod (3101), the outer baffle of the slider (3102), slider (3103), slider inner baffle (3104), positioning pin (3105), return spring (3106), spiral barrel (3107), slider shaft (3108), lift rod lower joint (3101 ) is fixedly connected with the lifting rod (3006), and the lower joint of the lifting rod (3101) is in turn connected with the slider shaft (3108), and the slider shaft (3108) is connected with the slider outer baffle (3102), the slider (3103), The inner baffles (3104) of the slide block are connected by rotation, the slide block (3103) is embedded in the chute of the loading rod (3007), the slide block (3103) and the chute are in sliding fit, the inner baffle plate of the slide block (3104 ), the slider outer baffle (3102) is located outside the chute, the slider inner baffle (3104), the slider outer baffle (3102) are fixedly connected to the slider (3103) respectively, and the positioning pin (3105) is connected to the slider The block shaft (3108) is slidingly connected, the return spring (3106) cooperates with the positioning pin (3105), and there are multiple Holes for positioning pins (3105), corresponding pin holes on the lower joint (3101) of the lifting rod, helical wires on the slider shaft (3108), and two spiral cylinders (3107) sleeved on the slider shaft (3108) On the helical line above, the return spring (3106) is connected with the helical cylinder (3107). 9. The handling trolley with the functions of transporting on level ground, climbing stairs and lifting goods according to claim 8, characterized in that: the telescopic front fork (3200) includes a front fork pin (3201), a front fork nut (3202) , front fork (3203), front fork bolt (3204), front fork shaft (3205), folding insert (3206), loading rod (3007) and front fork shaft (3205) are fixedly connected, front fork (3203) and front The fork shaft (3205) is rotationally connected, and the front fork (3203) and the front fork shaft (3205) are slidingly fitted in the axial direction, and the front fork pin (3201) is fixedly connected to the front fork (3203), and the front fork pin (3201) can be Insert it into the corresponding hole on the loading rod (3007), the front fork bolt (3204) is threadedly connected with the front fork shaft (3205), and the folding insert (3206) is connected with the front fork (3203) for rotation.