CN110638583B - Automatic wheelchair for pediatric rehabilitation - Google Patents

Abstract

The invention relates to the field of pediatrics, in particular to an automatic wheelchair for pediatric rehabilitation. The seat body can fix the legs of children; the use position of the seat body can be adjusted; the movement of the device can be adjusted through the rear wheel assembly Speed; the direction change of the device can be realized through the front wheel assembly, including the seat body; the rear wheel assembly; the front wheel assembly and the fixed rod, which are driven by the transverse sliding rod to drive the hinged push rod to rotate around the side wall slider , and drive the arc rod to rotate to the outside at the same time. At this time, the patient's leg is placed, and the position of the patient's leg is limited by the two arc rods; the fixed position of the patient's leg can be adjusted according to actual needs, and fixed by the arc rod The patient's leg, when the patient's leg moves, drives the side wall slider to slide along the front rectangular chute through the arc rod, thereby realizing the adjustment of the fixed position of the patient's leg.

Description

An automatic wheelchair for pediatric rehabilitation

technical field

The invention relates to the field of pediatrics, and more specifically relates to an automatic wheelchair for pediatric rehabilitation.

Background technique

Pediatric rehabilitation automatic wheelchair is a commonly used equipment in pediatric rehabilitation. The general pediatric rehabilitation automatic wheelchair does not have fixed equipment for legs, and its function is relatively simple.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an automatic wheelchair for pediatric rehabilitation, which can fix the legs of children with the seat body; adjust the use position of the seat body; adjust the movement speed of the device through the rear wheel assembly; The wheel assembly realizes the change of direction of the device.

The object of the present invention is achieved through the following technical solutions:

An automatic wheelchair for pediatric rehabilitation, comprising a seat body, a rear wheel assembly, a front wheel assembly and a fixing rod, characterized in that the seat body includes a seat body plate, an inner end slide bar, and an inner end push spring 1. Drive connecting rod, waist groove sliding rod, slider, lateral sliding rod, side wall slider, fixed arc rod, hinged push rod, front rectangular sliding groove, middle sliding hole, side wall plate 1. Side wall Plate 2, the middle end sliding hole is arranged on the seat body plate, the side wall plate 1 and the side wall plate 2 are fixedly connected with the seat body plate, the inner end sliding rod is slidably connected with the middle end sliding hole, and the inner end push spring One is sleeved connection with the inner end slide bar, the inner end push spring is in a compressed state, the drive link is fixedly connected to the inner end slide bar, the drive link is fixedly connected to the waist slot slide bar, and the waist slot slide bar is slidably connected to the slider. , the slider is slidably connected with the lateral sliding rod, the hinged push rod is hingedly connected with the lateral sliding rod, the hinged push rod is hingedly connected with the side wall slider, the side wall slider is slidably connected with the front rectangular chute, and the front rectangular chute is set On the seat body plate, the fixed arc rod is hingedly connected with the side wall slider, and the fixed arc rod is hingedly connected with the hinge push rod;

The rear wheel assembly includes a rear roller, a roller belt, a transmission pulley, a transmission shaft, a transmission bevel tooth, a middle-end fixed rod, a transmission bevel tooth, a spherical rod, a tapered roller, a socket ring, Inner drive ring gear, articulating rod 1, articulating frame A, fixing frame 1, fixing frame 2, input motor, input spur gear, transmission spur gear, fixing frame 3, upper sliding column, spherical rod 2, inner end rotating sleeve 1. The inner end rotating column, the inner end rotating sleeve 2, the inner end push spring 3, the tapered roller 2, the fixing frame 1 and the fixing frame 2 are fixedly connected with the hinge frame A), and the fixing frame 3 is fixed with the hinge frame A Connection, the upper sliding column is fixedly connected with the fixed frame, the input motor is fixedly connected with the hinge frame A, the transmission spur gear is fixedly connected with the input motor, the transmission spur gear is meshed with the input spur gear, and the input spur gear is fixedly connected with the spherical rod. The second spherical rod is rotatably connected with the second fixed frame, the second conical roller is hingedly connected with the second spherical rod, the rear roller is rotatably connected with the middle fixed rod, the first transmission shaft is rotatably connected with the middle fixed rod, and the first transmission bevel tooth is connected with the first transmission shaft. Fixed connection, the first transmission pulley is fixedly connected with the transmission shaft, the first roller belt is connected between the rear roller and the first transmission pulley, the second transmission bevel tooth meshes with the first transmission bevel tooth, and the second transmission bevel tooth is fixedly connected with the spherical rod one. The first spherical rod is hingedly connected with the tapered roller, the inner drive gear ring is connected with the inner drive gear ring and the conical roller, the inner drive gear ring is connected with the socket ring in rotation, and the socket ring slides with the upper spool. Connection, the inner end rotating sleeve one, the inner end rotating sleeve two is rotatably connected with the inner end rotating column, the inner end push spring three is sleeved connection with the inner end rotating column, the inner end push spring three is arranged on the inner end rotating sleeve one , between the two inner rotating sleeves, the first rotating sleeve at the inner end, the second rotating sleeve at the inner end is connected with the conical roller 1 and the conical roller 2, the hinge frame A is fixedly connected with the middle end fixing rod, and the middle end is fixed The rod is fixedly connected with the seat body panel;

The front wheel assembly is connected with the seat body through a fixing rod, and the front wheel assembly is connected with the seat body.

As a further optimization of this technical solution, the present invention is an automatic wheelchair for pediatric rehabilitation. The front wheel assembly includes a front roller, a middle-end fixed plate, a rotating drive rod, a direction-changing rotating rod, a middle-end fixed boss, and a direction rotating rod. Rod, transmission bevel tooth A, transmission rod A, transmission bevel tooth B, universal joint, universal joint bevel tooth, roller-driven rotating rod, the front roller is rotatably connected with the roller-driven rotating rod, and the roller-driven rotating rod is connected with the middle end The fixed plate is rotatably connected, the direction changing lever is rotatably connected with the middle end fixed plate, the rotating drive lever is rotatably connected with the direction changing lever, the roller driving lever is rotatably connected with the rotating drive lever, and the middle end fixed boss is rotated with the direction changing lever Connection, the direction turning rod is fixedly connected with the direction changing rod, the universal joint is connected with the front roller, the universal joint is connected with the universal joint bevel teeth, the universal joint bevel teeth are meshed with the transmission bevel teeth A, and the transmission bevel teeth A are connected with The transmission rod A is fixedly connected, the transmission rod A is fixedly connected with the transmission bevel teeth B, the transmission bevel teeth A mesh with the universal joint bevel teeth for transmission, the transmission rod A is rotatably connected with the middle end fixed plate, and the transmission bevel teeth B and the transmission bevel teeth are one. Engaged and driven, the fixing rod is fixedly connected between the middle end fixing boss and the seat main body plate.

The beneficial effects of the pediatric rehabilitation automatic wheelchair of the present invention are:

The present invention is an automatic wheelchair for pediatric rehabilitation. Driven by a lateral sliding rod, the hinged push rod is driven to rotate around the side wall slider, and the arc rod is driven to rotate inward at the same time. Leg; the fixed position of the patient's leg can be adjusted according to actual needs, and the patient's leg is fixed by the arc rod. When the patient's leg moves, the arc rod drives the side wall slider along the front rectangular chute Sliding inwardly, thereby realizing the adjustment of the fixed position of the patient's leg; when it is necessary to adjust the driving speed of the device, manually toggle the sleeve to slide on the upper spool, and then drive the inner transmission ring gear, so that the inner transmission ring gear The meshing position with the conical roller 1 and the conical roller 2 changes, so that the rotational speed of the transmission bevel tooth 2 changes, thereby realizing the adjustment of the traveling speed of the device.

Description of drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

Fig. 1 is the overall structure schematic diagram one of the present invention;

Fig. 2 is the overall structure schematic diagram two of the present invention;

FIG. 3 is a schematic diagram 1 of the seat body structure of the present invention;

FIG. 4 is a second schematic diagram of the structure of the seat body of the present invention;

FIG. 5 is a schematic diagram 3 of the seat body structure of the present invention;

FIG. 6 is a schematic diagram 4 of the seat body structure of the present invention;

FIG. 7 is a schematic diagram 5 of the seat body structure of the present invention;

FIG. 8 is a schematic structural diagram one of the rear wheel assembly of the present invention;

FIG. 9 is a second schematic view of the structure of the rear wheel assembly of the present invention;

Figure 10 is a schematic diagram three of the structure of the rear wheel assembly of the present invention;

Fig. 11 is a schematic diagram 4 of the structure of the rear wheel assembly of the present invention;

Figure 12 is a schematic diagram five of the structure of the rear wheel assembly of the present invention;

Figure 13 is a schematic diagram six of the structure of the rear wheel assembly of the present invention;

FIG. 14 is a schematic view of the structure of the front wheel assembly of the present invention.

In the figure: seat body 1; seat body plate 1-1; inner slide bar 1-2; inner push spring 1-3; drive link 1-4; waist slot slide bar 1-5; slider 1-6; Lateral slide bar 1-7; Side wall slider 1-8; Fixed arc bar 1-9; Hinged push rod 1-10; Front rectangular chute 1-11; Middle end slide hole 1-12 ; side wall plate one 1-13; side wall plate two 1-14; rear wheel assembly 2; rear roller 2-1; roller belt one 2-2; transmission pulley one 2-3; transmission shaft one 2-4; Transmission bevel 1 2-5; middle fixed rod 2-6; transmission bevel 2 2-7; spherical rod 1 2-8; tapered roller 1 2-9; socket ring 2-10; inner transmission tooth Ring 2-11; Hinged rod 1 2-12; Hinged frame A2-13; Fixing frame 1 2-14; Fixing frame 2 2-15; Input motor 2-16; Input spur gear 2-17; Transmission spur gear 2- 18; Fixing frame three 2-19; upper sliding column 2-20; spherical rod two 2-21; inner end rotating sleeve 1 2-22; inner end rotating column 2-23; inner end rotating sleeve 2 2-24 ; Inner push spring 3 2-25; Conical roller 2 2-27; Front wheel assembly 3; Front roller 3-1; Middle end fixing plate 3-2; Rotating drive rod 3-3; -4; fixed boss at the middle end 3-5; direction lever 3-6; transmission bevel A3-7; transmission rod A3-8; transmission bevel B3-9; universal joint 3-10; universal joint cone Teeth 3-11; Roller Drive Rod 3-12; Fixed Rod 4.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

The fixed connection mentioned in this device refers to fixing by welding; screw fixing, etc., and different fixing methods are used in combination with different use environments; A spring retaining ring groove is arranged on the shaft hole, and the bearing is axially fixed and rotated by clamping the elastic retaining ring in the retaining ring groove; Connection; the hinge refers to the connection method by moving on the connecting parts such as hinges, pin shafts and short shafts; the required seals are all sealed by sealing rings or O-rings.

Specific implementation one:

The present embodiment will be described below with reference to FIGS. 1-14 , a pediatric rehabilitation automatic wheelchair, comprising a seat body 1 , a rear wheel assembly 2 , a front wheel assembly 3 and a fixing rod 4 , wherein the seat body is characterized in that: 1 Including seat body plate 1-1, inner end slide bar 1-2, inner end push spring 1-3, drive link 1-4, waist slot slide bar 1-5, slider 1-6, lateral slide Rod 1-7, side wall slider 1-8, fixed arc rod 1-9, hinged push rod 1-10, front rectangular chute 1-11, middle sliding hole 1-12, side wall plate 1 1 -13. Side wall panel 2 1-14, the middle end sliding hole 1-12 is provided on the seat main body panel 1-1, side wall panel 1-13, side wall panel 2 1-14 and the seat body The plate 1-1 is fixedly connected, the inner end slide bar 1-2 is slidably connected with the middle end slide hole 1-12, the inner end push spring 1-3 is sleeved and connected with the inner end slide bar 1-2, and the inner end push spring 1 1-3 is in the compressed state, the drive link 1-4 is fixedly connected with the inner slide bar 1-2, the drive link 1-4 is fixedly connected with the waist groove slide bar 1-5, and the waist groove slide bar 1-5 is connected with the slide bar 1-5. Slider 1-6 is slidably connected, slider 1-6 is slidably connected to lateral slide bar 1-7, hinged pushrod 1-10 is hingedly connected to lateral slidebar 1-7, hinged pushrod 1-10 is hinged to sidewall slide 1 -8 hinged connection, the side wall slider 1-8 is slidably connected with the front rectangular chute 1-11, the front rectangular chute 1-11 is set on the seat body plate 1-1, and the arc rod 1-9 is fixed It is hingedly connected with the side wall slider 1-8, and the fixed arc rod 1-9 is hingedly connected with the hinged push rod 1-10;

The patient sits on the inner end slide bar 1-2, so that the inner end slide bar 1-2 moves downward in the middle end slide hole 1-12, and at the same time compresses the inner end push spring 1-3, and the inner end slide bar 1- 2. The waist groove slide bar 1-5 is driven downward by the driving link 1-4. The waist groove slide bar 1-5 drives the lateral slide bar 1-7 to move downward through the slider 1-6. The driving of the sliding rod 1-7 drives the hinged push rod 1-10 to rotate around the side wall slider 1-8, and drives the arc rod 1-9 to rotate to the outside at the same time. The arc rods 1-9 limit the position of the patient's legs; the fixed position of the patient's legs can be adjusted according to actual needs, and the patient's legs are fixed by the arc rods 1-9. When the patient's legs move, the The rod 1-9 drives the side wall slider 1-8 to slide along the front rectangular chute 1-11, thereby realizing the adjustment of the fixed position of the patient's leg.

The rear wheel assembly 2 includes a rear roller 2-1, a roller belt 2-2, a transmission pulley 2-3, a transmission shaft 2-4, a transmission bevel gear 2-5, and a middle end fixed rod 2-6. , Transmission bevel gear 2 2-7, spherical rod 1 2-8, tapered roller 1 2-9, socket ring 2-10, inner drive gear ring 2-11, hinge rod 1 2-12, hinge frame A2 -13. Fixing frame 1 2-14, fixing frame 2 2-15, input motor 2-16, input straight gear 2-17, transmission straight gear 2-18, fixing frame 3 2-19, upper sliding column 2-20 , Ball rod II 2-21, inner end rotating sleeve I 2-22, inner end rotating column 2-23, inner end rotating sleeve II 2-24, inner end push spring III 2-25, tapered roller II 2 -27, the first fixing frame 2-14, the second fixing frame 2-15 are fixedly connected with the hinge frame A2-13, the fixing frame 3 2-19 is fixedly connected with the hinge frame A2-13, and the upper sliding column 2-20 is fixedly connected with the hinge frame A2-13. The frame 3 2-19 is fixedly connected, the input motor 2-16 is fixedly connected with the hinge frame A2-13, the transmission spur gear 2-18 is fixedly connected with the input motor 2-16, and the transmission spur gear 2-18 is fixedly connected with the input spur gear 2-17 Meshing transmission, the input spur gear 2-17 is fixedly connected with the spherical rod 2-21, the spherical rod 2-21 is rotatably connected with the fixed frame 2-15, the tapered roller 2-27 is hinged with the spherical rod 2-21 Connection, the rear roller 2-1 is rotatably connected with the middle end fixing rod 2-6, the transmission shaft 1 2-4 is rotatably connected with the middle end fixing rod 2-6, and the transmission bevel tooth 1 2-5 is fixed with the transmission shaft 1 2-4 Connection, the first transmission pulley 2-3 is fixedly connected with the transmission shaft 1 2-4, the roller belt 1 2-2 is connected between the rear roller 2-1 and the transmission pulley 1 2-3, the transmission bevel tooth 2 2-7 is connected with the transmission Bevel gear 1 2-5 meshing transmission, transmission bevel gear 2 2-7 is fixedly connected with spherical rod 1 2-8, spherical rod 1 2-8 is hingedly connected with conical roller 1 2-9, inner transmission gear ring 2- 11 and the inner transmission ring gear 2-11 and the conical roller 2 2-27 Milk tea shop, the inner transmission ring gear 2-11 is rotatably connected with the socket ring 2-10, and the socket ring 2-10 is connected with the upper spool 2 -20 sliding connection, inner end rotating sleeve 1 2-22, inner end rotating sleeve 2 2-24 and inner end rotating column 2-23 rotating connection, inner end push spring 3 2-25 and inner end rotating column 2- 23 socket connection, the inner end push spring 3 2-25 is arranged between the inner end rotating sleeve 1 2-22, the inner end rotating sleeve 2 2-24, the inner end rotating sleeve 1 2-22, the inner end rotating The second sleeve 2-24 is connected with the tapered roller 1 2-9 and the tapered roller 2 2-27, the hinge frame A2-13 is fixedly connected with the middle end fixing rod 2-6, and the middle end fixing rod 2-6 is connected with the seat The chair main body board 1-1 is fixedly connected;

Start the input motor 2-16, drive the transmission spur gear 2-18 to rotate through the input spur gear 2-17, and then drive the spherical rod 2-21 to rotate, and then drive the conical roller two 2-27 to rotate, the conical roller Two 2-27 drives the conical roller one 2-9 to rotate through the inner drive ring gear 2-11, the conical roller one 2-9 drives the spherical rod one 2-8 to rotate, and then drives the transmission bevel gear two 2- 7 rotation, through the meshing transmission of the transmission bevel tooth 2-7 and the transmission bevel tooth 1 2-5, the transmission shaft 1 2-4 is driven to rotate, and the transmission shaft 1 2-4 passes through the roller belt 1 2-2 and the transmission pulley 1. 2-3 drives the rear roller 2-1 to rotate, and drives the device to travel through the friction between the rear roller 2-1 and the ground; when the speed of the device needs to be adjusted, manually toggle the sleeve ring 2-10 to slide on the upper end. The column 2-20 slides, and then drives the inner transmission ring gear 2-11, so that the meshing position of the inner transmission ring gear 2-11 with the tapered roller 1 2-9 and the tapered roller 2 2-27 changes, thereby making The rotational speed of the transmission bevel teeth II 2-7 changes, thereby realizing the adjustment of the traveling speed of the device;

The front wheel assembly 2 is connected with the seat body 1 through a fixing rod 4 , and the front wheel assembly 3 is connected with the seat body 1 .

Specific implementation two:

The present embodiment will be described below with reference to Figs. 1-14. This embodiment will further describe the first embodiment. The front wheel assembly 3 includes a front roller 3-1, a middle end fixing plate 3-2, a rotating drive rod 3-3, Direction changing lever 3-4, middle end fixed boss 3-5, direction lever 3-6, transmission bevel A3-7, transmission rod A3-8, transmission bevel B3-9, universal joint 3-10 , universal joint bevel tooth 3-11, roller driving lever 3-12, the front roller 3-1 is rotatably connected with the roller driving lever 3-12, the roller driving lever 3-12 and the middle end fixing plate 3- 2. Rotational connection, the direction changing lever 3-4 is rotationally connected with the middle end fixing plate 3-2, the rotational driving lever 3-3 is rotationally connected with the direction changing lever 3-4, and the roller driving lever 3-12 is connected with the rotational driving lever 3-3 is rotationally connected, the middle end fixed boss 3-5 is rotationally connected with the direction changing lever 3-4, the direction lever 3-6 is fixedly connected with the direction changing lever 3-4, and the universal joint 3-10 is connected with the front The roller 3-1 is connected, the universal joint 3-10 is connected with the universal joint bevel tooth 3-11, the universal joint bevel tooth 3-11 is meshed with the transmission bevel tooth A3-7, and the transmission bevel tooth A3-7 is connected with the transmission rod A3-8 is fixedly connected, the transmission rod A3-8 is fixedly connected with the transmission bevel tooth B3-9, the transmission bevel tooth A3-7 is meshed with the universal joint bevel tooth 3-11, and the transmission rod A3-8 is connected with the middle end fixed plate 3 -2 Rotational connection, the transmission bevel B3-9 meshes with the transmission bevel 1 2-5 for transmission, and the fixing rod 4 is fixedly connected between the middle end fixing boss 3-5 and the seat body plate 1-1.

The working principle of a pediatric rehabilitation automatic wheelchair of the present invention is as follows:

When in use, the patient sits on the inner sliding rod 1-2, so that the inner sliding rod 1-2 moves downward in the middle sliding hole 1-12, and at the same time compresses the inner end push spring 1-3, the inner end sliding The rod 1-2 drives the waist groove sliding rod 1-5 to move downward through the driving link 1-4, and the waist groove sliding rod 1-5 drives the lateral sliding rod 1-7 to move downward through the slider 1-6. , through the drive of the transverse sliding rod 1-7, the hinged push rod 1-10 is driven to rotate around the side wall slider 1-8, and the arc rod 1-9 is driven to rotate to the outside at the same time, and the patient's leg is placed at this time. The position of the patient's legs is limited by two arc-shaped rods 1-9; the fixed position of the patient's legs can be adjusted according to actual needs, and the patient's legs are fixed through the arc-shaped rods 1-9. When the patient's legs move, The arc rod 1-9 drives the side wall slider 1-8 to slide along the front rectangular chute 1-11, thereby realizing the adjustment of the fixed position of the patient's leg; when in use, start the input motor 2-16, The input spur gear 2-17 drives the transmission spur gear 2-18 to rotate, which in turn drives the second spherical rod 2-21 to rotate, which in turn drives the second conical roller 2-27 to rotate, and the second conical roller 2-27 passes through the inner end The transmission gear ring 2-11 drives the conical roller one 2-9 to rotate, the conical roller one 2-9 drives the spherical rod one 2-8 to rotate, and then drives the transmission bevel tooth two 2-7 to rotate. The meshing transmission between the second 2-7 and the transmission bevel gear 1 2-5 drives the transmission shaft 1 2-4 to rotate, and the transmission shaft 1 2-4 drives the rear roller through the roller belt 1 2-2 and the transmission pulley 1 2-3. 2-1 rotates, and drives the device to drive through the friction between the rear roller 2-1 and the ground; when the driving speed of the device needs to be adjusted, manually toggle the socket ring 2-10 to slide on the upper column 2-20, and then Drive the inner transmission ring gear 2-11, so that the meshing position of the inner transmission ring gear 2-11 with the conical roller 1 2-9 and the conical roller 2 2-27 changes, and then make the transmission bevel gear 2 2-7 change. The speed of the device changes, so as to realize the adjustment of the traveling speed of the device; when in use, manually rotate the direction lever 3-6, and the direction lever 3-6 drives the direction lever 3-4 to rotate, and the direction lever 3- 4. By rotating the driving rod 3-3, the roller drives the rotating rod 3-12 to rotate, and the roller driving the rotating rod 3-12 drives the front roller 3-1 to rotate, thereby realizing steering, and the universal joint 3-10 can realize the front roller. 3-1 can rotate by itself during the turning process to avoid interference with the turning of the front roller 3-1.

Of course, the above description does not limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or replacements made by those of ordinary skill in the art within the scope of the present invention also belong to the present invention. protected range.

Claims (2)

1. An automatic wheelchair for pediatric rehabilitation, comprising a seat body (1), a rear wheel assembly (2), a front wheel assembly (3) and a fixing rod (4), characterized in that: the seat body ( 1) Including the seat body plate (1-1), the inner end slide bar (1-2), the inner end push spring one (1-3), the drive link (1-4), the waist slot slide bar (1- 5), Slider (1-6), Lateral Slider (1-7), Sidewall Slider (1-8), Fixed Arc Bar (1-9), Articulated Pusher (1-10), Front Side rectangular chute (1-11), middle end sliding hole (1-12), side wall plate one (1-13), side wall plate two (1-14), the middle end sliding hole (1-12) ) is arranged on the seat body panel (1-1), the side wall panel 1 (1-13) and the side wall panel 2 (1-14) are fixedly connected with the seat body panel (1-1), and the inner end slide bar (1-2) is slidably connected with the middle end slide hole (1-12), the inner end push spring one (1-3) is sleeved and connected with the inner end slide rod (1-2), and the inner end push spring one (1- 3) In the compressed state, the drive connecting rod (1-4) is fixedly connected with the inner sliding rod (1-2), the driving connecting rod (1-4) is fixedly connected with the waist groove sliding rod (1-5), and the waist groove The sliding rod (1-5) is slidably connected with the slider (1-6), the slider (1-6) is slidably connected with the lateral sliding rod (1-7), and the hinged push rod (1-10) is slidably connected with the lateral sliding rod ( 1-7) Hinged connection, the hinged push rod (1-10) is hingedly connected with the side wall slider (1-8), and the side wall slider (1-8) is slidably connected with the front rectangular chute (1-11) , the front rectangular chute (1-11) is arranged on the seat body panel (1-1), the fixed arc rod (1-9) is hingedly connected with the side wall slider (1-8), and the fixed arc rod (1-9) is hingedly connected with the hinged push rod (1-10); The rear wheel assembly (2) includes a rear roller (2-1), a roller belt (2-2), a transmission pulley (2-3), a transmission shaft (2-4), and a transmission bevel tooth (2-4). 2-5), middle fixed rod (2-6), two transmission bevel teeth (2-7), one spherical rod (2-8), one tapered roller (2-9), socket ring (2- 10), inner drive ring gear (2-11), hinge rod one (2-12), hinge frame A (2-13), fixed frame one (2-14), fixed frame two (2-15), Input motor (2-16), input spur gear (2-17), transmission spur gear (2-18), fixing frame three (2-19), upper sliding column (2-20), ball rod two (2- 21), inner end rotating sleeve one (2-22), inner end rotating column (2-23), inner end rotating sleeve two (2-24), inner end push spring three (2-25), conical The second roller (2-27), the first fixing frame (2-14) and the second fixing frame (2-15) are fixedly connected with the hinge frame A (2-13), and the fixing frame three (2-19) is connected with the hinge frame A (2-13) is fixedly connected, the upper sliding column (2-20) is fixedly connected with the fixing frame three (2-19), the input motor (2-16) is fixedly connected with the hinge frame A (2-13), and the transmission is directly The tooth (2-18) is fixedly connected with the input motor (2-16), the transmission spur tooth (2-18) meshes with the input spur tooth (2-17) for transmission, and the input spur tooth (2-17) is connected with the spherical rod two ( 2-21) Fixed connection, the second ball rod (2-21) is rotatably connected with the second fixing frame (2-15), the second conical roller (2-27) is hingedly connected with the second ball rod (2-21), the rear roller (2-1) is rotatably connected with the middle end fixing rod (2-6), the first transmission shaft (2-4) is rotatably connected with the middle end fixing rod (2-6), and the first transmission bevel tooth (2-5) is connected with the transmission The first shaft (2-4) is fixedly connected, the first transmission pulley (2-3) is fixedly connected with the first transmission shaft (2-4), and the first roller belt (2-2) is connected to the rear roller (2-1) and the transmission pulley Between one (2-3), the second transmission bevel tooth (2-7) meshes with the transmission bevel tooth one (2-5) for transmission, and the transmission bevel tooth two (2-7) is fixed with the spherical rod one (2-8). connection, the ball rod one (2-8) is hingedly connected with the conical roller one (2-9), the inner drive ring gear (2-11) is connected with the inner drive ring gear (2-11) and the conical roller two ( 2-27) Milk tea shop, the inner drive gear ring (2-11) is rotatably connected with the socket ring (2-10), the socket ring (2-10) is slidably connected with the upper column (2-20), and the inner The first rotating sleeve at the end (2-22), the second rotating sleeve at the inner end (2-24) is rotatably connected with the rotating column at the inner end (2-23), and the push spring at the inner end (2-25) is connected with the rotating column at the inner end. (2-23) Sleeve connection, the inner end push spring three (2-25) is arranged between the inner end rotating sleeve one (2-22), the inner end rotating sleeve two (2-24), the inner end rotating Sleeve one (2-22), inner end turning sleeve two (2-24) and tapered roller The first (2-9) is connected with the second tapered roller (2-27), the hinge frame A (2-13) is fixedly connected with the middle end fixing rod (2-6), and the middle end fixing rod (2-6) is connected with The seat body plate (1-1) is fixedly connected; The front wheel assembly (2) is connected with the seat body (1) through a fixing rod (4), and the front wheel assembly (3) is connected with the seat body (1). 2. An automatic wheelchair for pediatric rehabilitation according to claim 1, characterized in that: the front wheel assembly (3) comprises a front roller (3-1), a middle end fixing plate (3-2), a rotating Drive rod (3-3), steering rod (3-4), middle end fixed boss (3-5), direction rod (3-6), transmission bevel A (3-7), transmission rod A (3-8), transmission bevel teeth B (3-9), universal joint (3-10), universal joint bevel teeth (3-11), roller drive lever (3-12), the front The roller (3-1) is rotatably connected with the roller driving lever (3-12), the roller driving lever (3-12) is rotatably connected with the middle end fixing plate (3-2), and the direction changing lever (3-4) It is rotatably connected with the middle end fixing plate (3-2), the rotary drive rod (3-3) is rotatably connected with the direction change rod (3-4), and the roller drive rod (3-12) is connected with the rotary drive rod (3-4). 3) Rotational connection, the middle end fixed boss (3-5) is rotatably connected with the direction change lever (3-4), and the direction lever (3-6) is fixedly connected with the direction change lever (3-4). The joint (3-10) is connected with the front roller (3-1), the universal joint (3-10) is connected with the universal joint bevel tooth (3-11), and the universal joint bevel tooth (3-11) is connected with the transmission The bevel tooth A(3-7) is meshed for transmission, the transmission bevel tooth A(3-7) is fixedly connected with the transmission rod A(3-8), and the transmission rod A(3-8) is connected with the transmission bevel tooth B(3-9) Fixed connection, the transmission bevel tooth A (3-7) meshes with the universal joint bevel tooth (3-11) for transmission, the transmission rod A (3-8) is rotatably connected with the middle end fixing plate (3-2), the transmission bevel tooth B (3-9) meshes with the transmission bevel gear 1 (2-5) for transmission, and the fixing rod (4) is fixedly connected between the middle end fixing boss (3-5) and the seat main body plate (1-1).

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