CN110374490A - Folding ladder - Google Patents

Abstract

The present invention discloses a folding ladder, comprising a ladder body, a support frame for supporting the ladder body, a movable device movably connected between the upper end of the ladder body and the upper end of the support frame, an adjustment device for adjusting the angle of the ladder body, two sets of anti-slip devices provided on the ladder body, and anti-tipping devices provided on both sides of the support frame. The adjustment device adjusts the angle of the ladder body, the anti-slip devices ensure that the angle adjustment does not affect the overall stability of the ladder body, and the anti-tipping devices prevent the ladder body from swaying from side to side. The present invention prevents the ladder from slipping and tipping, making it more stable during use and avoiding safety accidents for operators.

Description

a folding ladder

technical field

The invention relates to the field of climbing ladders, in particular to a folding ladder.

Background technique

Ladders are widely used in all walks of life and can help operators climb from low places to high places. According to the limitation of the use space, there is a kind of ladder that needs to be leaned against the wall, which itself has slipping and toppling phenomenon, and at the same time causes damage to the wall or objects.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a folding ladder.

In order to achieve the above object, the present invention adopts the following technical solutions: a folding ladder, including a ladder body, a support frame for supporting the ladder body, a movable device for movably connecting the upper end of the ladder body with the upper end of the support frame, and a device for adjusting the angle of the ladder body. Adjusting device, two sets of anti-slip devices arranged on the ladder body, anti-dumping devices arranged on both sides of the support frame, the ladder body includes pedals, two arms on both sides of the pedals for fixing the pedals, fixed on the supports The guard plate on the arm, the ladder body is connected with the support frame through a movable device. The present invention prevents the sliding of the contact part between the ladder body and the bottom surface by setting two sets of anti-skid devices; by setting the anti-dumping device, it prevents the ladder body from shaking when the staff stands on the ladder body; by setting the movable device, the ladder body and the support frame It can be connected together, and the angle of the ladder body can be adjusted, which is suitable for various medium-height operations; by setting the support frame, the ladder body can be prevented from contacting the wall surface, causing damage to the wall surface, and at the same time, it can be close to the wall surface, avoiding space problems and affecting the use of the ladder .

The support frame includes a first support foot and a second support foot, a first support rod sleeved on the first support foot, a second support rod sleeved on the second support foot, a first slide provided on the first support rod slots, the second sliding slots on the second pole, multiple telescopic load-bearing blocks arranged in an equidistant array on the first leg and the second leg, multiple telescopic load-bearing blocks that fix the first leg and the second leg below the telescopic load-bearing block a support block, a plurality of fixed grooves arranged in the first sliding groove and the second sliding groove, the first supporting foot and the second supporting foot are in contact with the bottom surface; the overall height of the supporting frame is adjusted by pulling the first supporting foot and the second supporting foot, stretching The weighing block fixes the height of the support frame; the support frame as a whole can be adjusted through the first support rod sleeved on the first leg and the second support rod sleeved on the second leg to adapt to the angle adjustment of the ladder body , and then through the telescopic load-bearing block, the adjusted height is fixed, and a support block is provided below the telescopic load-bearing block to avoid bending of the telescopic load-bearing block, which affects the expansion and load-bearing.

The movable device includes a first fixed seat and a second fixed seat fixed on the two arms, and a first rotating shaft passing through the first fixed seat and the second fixed seat at the same time; through the first rotating shaft, the ladder body and the support The racks are flexibly connected and easy to fold.

The adjustment device includes a third fixed seat and a fourth fixed seat arranged in the middle of the two arms, a second rotating shaft passing through the third fixed seat and the fourth fixed seat at the same time, and a first The first moving block in the sliding groove, the second moving block that is located in the second sliding groove on the second pole, the third rotating shaft that rotates on the first moving block and the second moving block, and one end is located on the second moving block. The two connecting rods on the rotating shaft and the other ends on the third rotating shaft, and the two fixing columns that are arranged on the first moving block and the second moving block and inserted into the fixing grooves, move the third rotating shaft, and the first moving The block and the second moving block move up and down. After the position is determined, the moving column is inserted into the fixing groove, and the first moving block and the second moving block are fixed to complete the adjustment and fixing of the angle of the ladder body; through the second rotating shaft and The third rotating shaft, when the first moving block and the second moving block move up and down, the connecting rod can be turned over to complete the adjustment of the angle of the ladder body, and then the first moving block and the second moving block are provided with fixed columns to make the adjustment Fixation after position.

The anti-skid device includes a fifth rotating shaft arranged at the bottom end of the support arm, anti-slip seats located at both ends of the fifth rotating shaft and both sides of the support arm, half teeth arranged on the anti-slip seat, and half teeth located on one side of the support arm. The pinion set together, the first anti-slip sheet fixed at the center of the pinion, the symmetrical first anti-slip sheet fixed on the second anti-slip sheet on the support arm, the fixed pinion runs through the first anti-slip sheet and the second anti-slip sheet at the same time and rotate the sixth rotating shaft on the support arm, which is located at the locking part on the other side of the support arm. The anti-slip seat rotates to adjust the angle of the ladder body, drives the pinion to rotate, and pulls the sixth rotating shaft through the locking part. The first anti-slip plate and The second anti-slip sheet is close to each other, stops the rotation of the pinion, and fixes the anti-slip seat; by rotating the fifth rotating shaft arranged on the support arm, the anti-slip seat located at both ends of the fifth rotating shaft can rotate, and after the ladder body adjusts the angle, The bottom surface of the anti-slip seat can always be in contact with the ground to ensure the contact area with the bottom surface and avoid ladder body slipping due to the reduction of the contact area. Through the locking part, the first anti-slip sheet and the second anti-slip sheet can approach and move away from each other. The sheet and the second anti-slip sheet are close to each other to play a braking effect, and the position can be rotatably adjusted away from the anti-slip seat.

The locking part includes a sleeve sleeved on the sixth rotating shaft and fixed on the support arm, a compression spring with one end fixed on the sixth rotating shaft between the sleeve and the sixth rotating shaft, and a first rotating shaft arranged on the sixth rotating shaft. Seven rotating shafts, a wrench fixed at the middle position of the seventh rotating shaft, two special-shaped blocks fixed at both ends of the seventh rotating shaft, a buckle fixed on the support arm to cooperate with the wrench, and the wrench is pulled in the direction of the buckle, the seventh The rotating shaft rotates, the two moving blocks rotate, and at the same time, the sixth rotating shaft moves in the direction of the wrench. The wrench is locked by the buckle, and the locking of the wrench is released. The compression spring pushes the sixth rotating shaft to move in the direction of the pinion. The first The anti-slip sheet and the second anti-slip sheet are separated; by pulling the wrench, the moving block is rotated, and the sixth rotating shaft is moved in the direction of the wrench, so that the first anti-slip sheet and the second anti-slip sheet are close to each other, and the anti-slip seat is fixed. Buckle the wrench to fix it, so as to prevent the wrench from returning to its position during use, which will affect the use. When adjustment is required, the wrench will return to its position again. Through the compression spring, the first anti-slip sheet and the second anti-slip sheet can be separated, so that the anti-slip seat can rotate.

The anti-dumping device includes an eighth rotating shaft that is rotated on the first pole, a stretching rod fixed on the eighth rotating shaft, a fixed switch on the stretching rod, and a ninth rotating shaft on the bottom of the stretching rod. The rotating shaft, the two anti-dumping feet located at the two ends of the ninth rotating shaft, the connecting fixed rod fixed on the two anti-dumping feet and between them, rotate and stretch the stretching rod, the anti-dumping feet touch the ground, and the fixed switch pair The length of the stretching rod is fixed; through the eighth rotating shaft, the stretching rod can be rotated, and the length of the stretching rod can be adjusted by stretching the stretching rod. The length is fixed to prevent the ladder body from shaking from side to side. The ninth rotating shaft that is movably connected enables the anti-dumping feet to rotate, so that the bottom surface of the anti-dumping feet can contact the ground and prevent the telescopic rod from slipping.

The invention has the following advantages: by setting two sets of anti-skid devices, the sliding of the contact part between the ladder body and the bottom surface is avoided; by setting the anti-dumping device, the ladder body is prevented from shaking when the staff stands on the ladder body; The body and the support frame can be connected together, and the angle of the ladder body can be adjusted, which is suitable for various medium-height operations; by setting the support frame, the contact between the ladder body and the wall can be avoided, causing damage to the wall, and at the same time, it can be close to the wall to avoid space problems , affecting the use of ladders.

Description of drawings

Fig. 1 is a structural schematic diagram of a folding ladder.

Figure 2 is a schematic structural view of the support frame.

FIG. 3 is a schematic cross-sectional view of the support frame.

FIG. 4 is a second schematic cross-sectional view of the support frame.

FIG. 5 is a schematic cross-sectional view III of the support frame.

Fig. 6 is a schematic diagram of the anti-skid device.

FIG. 7 is an enlarged view of A in FIG. 6 .

Fig. 8 is a schematic cross-sectional view of the anti-skid device.

Fig. 9 is a structural schematic diagram of the locking part.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

As shown in Figures 1-9, a folding ladder includes a ladder body 1, a support frame 2 for supporting the ladder body, a movable device 3 for movably connecting the upper end of the ladder body to the upper end of the support frame, and an adjustment device for adjusting the angle of the ladder body. Device 4, two sets of anti-skid devices 5 arranged on the ladder body, anti-dumping devices 6 arranged on both sides of the support frame, the ladder body includes a pedal 11, two arms 12 positioned on both sides of the pedal for fixing the pedal, The guard plate 13 fixedly arranged on the arm, the ladder body and the support frame are connected by a movable device, the support frame is perpendicular to the ground, and the angle between the ladder body and the support frame is adjusted by the adjustment device.

Further, the support frame 2 includes a first leg 21 and a second leg 22, a first leg 23 sleeved on the first leg, a second rod 24 sleeved on the second leg, and a second leg 24 sleeved on the second leg. The first sliding groove 25 on one pole, the second sliding groove 26 located on the second pole, the multiple telescopic load-bearing blocks 27 arranged on the first supporting foot and the second supporting foot in an equidistant array, fixing the first supporting foot and the second supporting foot are positioned at a plurality of support blocks 28 below the telescopic load-bearing block, and are located in a plurality of fixing grooves 29 in the first sliding groove and the second sliding groove. The first supporting foot and the second supporting foot are in contact with the bottom surface; pulling the first The legs and the second legs adjust the overall height of the support frame, and the telescopic weighing block fixes the height of the support frame; through the first rod set on the first leg and the second rod set on the second leg, The support frame can be adjusted as a whole to adapt to the angle adjustment of the ladder body, and then the adjusted height is fixed through the telescopic load-bearing block. A support block is provided below the telescopic load-bearing block to avoid bending of the telescopic load-bearing block, which affects expansion and load-bearing.

Further, the movable device 3 includes a first fixed seat 31 and a second fixed seat 32 fixedly arranged on the two arms, and a first rotating shaft 33 passing through the first fixed seat and the second fixed seat at the same time. A rotating shaft movably connects the ladder body and the supporting frame, and is convenient for folding.

Further, the adjustment device 4 includes a third fixed seat 41 and a fourth fixed seat 42 arranged in the middle of the two arms, a second rotating shaft 43 passing through the third fixed seat and the fourth fixed seat at the same time, and arranged on the The first mobile block 44 in the first sliding groove on the first pole, the second mobile block 45 that is located in the second sliding groove on the second pole, and the rotating block that is located on the first mobile block and the second mobile block The third rotating shaft 46, one end is arranged on the second rotating shaft and the other end is arranged on two connecting rods 47 on the third rotating shaft, through the two connecting rods 47 that are arranged on the first moving block and the second moving block and are inserted into the fixed grooves. The fixed column 48 moves the third rotating shaft, and the first moving block and the second moving block move up and down. After the position is determined, the moving column is inserted into the fixing groove, and the first moving block and the second moving block are fixed to complete the ladder alignment. Body angle adjustment and fixation.

Further, the anti-skid device 5 includes a fifth rotating shaft 51 arranged at the bottom end of the support arm, anti-slip seats 52 located at both ends of the fifth rotating shaft and both sides of the support arm, half teeth 53 provided on the anti-slip seats, and half teeth 53 located on the support arm. One side is provided with the pinion 54 that meshes with the half tooth, the first anti-slip sheet 55 that is fixedly located at the center of the pinion, the symmetrical first anti-slip sheet that is fixed on the second anti-slip sheet 56 on the support arm, and the fixed pinion. Simultaneously through the first anti-slip sheet and the second anti-slip sheet and rotate the sixth rotating shaft 57 located on the support arm and the locking part 58 on the other side of the support arm, the anti-slip seat rotates to adjust the angle of the ladder body, and drives the pinion to rotate. The tight part pulls the sixth rotating shaft, the first anti-slip sheet and the second anti-slip sheet are close together, the rotation of the pinion is stopped, and the anti-slip seat is fixed; by rotating the fifth rotating shaft on the support arm, the two ends of the fifth rotating shaft are The anti-slip seat can be rotated so that after the ladder body adjusts the angle, the bottom surface of the anti-slip seat can always be in contact with the ground to ensure the contact area with the bottom surface and avoid the ladder body slipping due to the reduction of the contact area. Through the locking part, the first anti-slip sheet and the second anti-slip sheet The two anti-slip sheets can approach and move away from each other, the first anti-slip sheet and the second anti-slip sheet approach each other to play a braking effect, and the positions can be rotatably adjusted away from the anti-slip seat.

Further, the locking part 58 includes a sleeve 581 sleeved on the sixth rotating shaft and fixed on the support arm, a compression spring 582 with one end fixed on the sixth rotating shaft between the sleeve and the sixth rotating shaft, The seventh rotating shaft 583 on the sixth rotating shaft, the wrench 584 fixedly arranged in the middle of the seventh rotating shaft, the two special-shaped blocks 585 fixedly arranged at both ends of the seventh rotating shaft, the buckle 586 fixedly arranged on the support arm to cooperate with the wrench, Pull the wrench in the direction of the buckle, the seventh shaft rotates, the two moving blocks rotate, and at the same time the sixth shaft moves in the direction of the wrench, the wrench is locked through the buckle, the locking of the wrench is released, and the pressure spring pushes the sixth The rotating shaft moves in the direction of the pinion, and the first anti-slip sheet is separated from the second anti-slip sheet.

Further, the anti-dumping device 6 includes an eighth shaft 61 that is rotated on the first pole, a stretching rod 62 fixed on the eighth shaft, a fixed switch 63 on the stretching rod, a The ninth rotating shaft 64 at the bottom end of the stretching rod, the two anti-dumping feet 65 located at the two ends of the ninth rotating shaft, the connecting fixed rod 66 fixed on the two anti-dumping feet and between them, rotate and stretch the stretching rod , the anti-dumping foot touches the ground, and the fixed switch fixes the length of the stretching rod; through the eighth rotating shaft, the stretching rod can be rotated, and the length of the stretching rod can be adjusted by stretching the stretching rod, and the angle of the stretching rod can be adjusted at will , and then through the fixed switch, the length of the stretching rod is fixed to prevent the ladder body from shaking left and right, and the ninth rotating shaft through the movable connection enables the anti-dumping foot to rotate, so that the bottom surface of the anti-dumping foot can contact the ground to avoid the sliding of the telescopic rod.

Claims (7)

1. a kind of folded ladder, including terraced body (1), the support frame (2), terraced body upper end and the work of support frame upper end that are used to support terraced body The head (3) of dynamic connection, the regulating device (4) for adjusting terraced body angle, two groups of anti-skid devices on terraced body (5), set on the anti-tipping apparatus (6) of support frame two sides, the ladder body includes pedal (11), is used to fix positioned at pedal two sides and step on Two support arms (12) of plate, the backplate (13) being fixed on support arm.

2. a kind of folded ladder described in accordance with the claim 1, it is characterised in that: support frame as described above (2) includes the first stabilizer blade (21) and the second stabilizer blade (22), the first strut (23) being sheathed on the first stabilizer blade, the second strut for being sheathed on the second stabilizer blade (24), the first slide slot (25) on the first strut, the second slide slot (26), equidistant array on the second strut are set In on the first stabilizer blade and the second stabilizer blade multiple flexible bearing blocks (27), fix the first stabilizer blade and the second stabilizer blade and be located at flexible load-bearing Multiple supporting blocks (28) below block, multiple fixing grooves (29) in the first slide slot and the second slide slot.

3. a kind of folded ladder described in accordance with the claim 1, it is characterised in that: the head (3) includes being fixed at The first fixing seat (31) and the second fixing seat (32) on two support arms, simultaneously in the first fixing seat and the second fixing seat First rotating shaft (33).

4. a kind of folded ladder described in accordance with the claim 1, it is characterised in that: the regulating device (4) includes being set to two The third fixing seat (41) and the 4th fixing seat (42) in support arm middle position run through in third fixing seat and the 4th fixing seat simultaneously The second shaft (43), the first movement block (44) in the first slide slot on the first strut, be set to the second strut on second The second movable block (45), the third shaft (46) rotated on first movement block and the second movable block in slide slot, one end In the second shaft and the other end be set to third shaft on two connecting rods (47), through be set to first movement block and second Two fixed columns (48) that are on movable block and being inserted into fixing groove.

5. a kind of folded ladder described in accordance with the claim 1, it is characterised in that: the anti-skid device (5) includes that rotation is set to 5th shaft (51) of support arm bottom end, positioned at the Anti-skid seat (52) of the 5th both ends of the shaft and support arm two sides, on Anti-skid seat Half tooth (53), positioned at support arm side and the ratcheting setting of half tooth pinion gear (54), be fixed at the of pinion gear centre On the second Anti-skid sheet (56) that one Anti-skid sheet (55), symmetrical first Anti-skid sheet are fixed on support arm, fixed pinion gear while passing through It wears the first Anti-skid sheet and the second Anti-skid sheet and rotates the 6th shaft (57) being set on support arm, is located at support arm other side tight lock part (58).

6. a kind of folded ladder according to claim 5, it is characterised in that: the tight lock part (58) includes being sheathed on the 6th Shaft and the pressure for being fixed on the sleeve on support arm (581), being fixed on positioned at sleeve and the 6th shaft centre one end in the 6th shaft Spring (582) rotates the 7th shaft (583) being set in the 6th shaft, the spanner for being fixed at the 7th shaft middle position (584), two special-shaped blocks (585) of the 7th both ends of the shaft are fixed at, are fixed at the buckle on support arm with spanner cooperation (586).

7. a kind of folded ladder described in accordance with the claim 1, it is characterised in that: the anti-tipping apparatus (6) includes that rotation is set In on the first strut eight revolution axis (61), be fixed on eight revolution axis stretch rod (62), the fixation on stretch rod It switchs (63), the 9th shaft (64) set on stretch rod bottom end, two overturning-preventing feet (65) set on the 9th both ends of the shaft, fix Bar (66) are connected and fixed on two overturning-preventing feet and between being located at.