A folding ladder for a refrigerated vehicle

Abstract

The utility model relates to cold storage vehicle technical field, concretely is a kind of folding cat ladder for cold storage vehicle, it includes: first cat ladder, second cat ladder, first cat ladder top end is connected with the boss hinged setting of symmetrical connection setting on cold storage vehicle compartment main body side wall, second cat ladder is movably arranged in the front end of first cat ladder;Second cat ladder is set on the cold storage vehicle compartment main body side wall by auxiliary assembly;Rotary hand screw bolt controls the block of admission circular groove, the downward movement of I-shaped plate makes its both side end plate no longer contact and resist with the side end of limiting clamping plate, limiting clamping plate is rotated to one side unlocking auxiliary support frame, so that auxiliary support frame and card slot are separated after, adjust the position of first cat ladder and auxiliary support frame, until antiskid support leg and auxiliary support leg are supported on ground, at this moment personnel can step on the upper end frame of auxiliary support frame and climb on second cat ladder and first cat ladder;It is easy to operate, realizes fast inclined cat ladder, improves the comfort of staff when climbing.

Description

Technical Field

[0001] This utility model relates to the field of refrigerated truck technology, specifically a folding ladder for refrigerated trucks. Background Technology

[0002] Chinese patent document CN215565673U discloses a folding ladder for refrigerated trucks, comprising a first long pole, a second long pole, and at least three parallel climbing rods positioned between the first and second long poles. The first long pole has a detachable connection structure to the refrigerated truck compartment. The two ends of the climbing rods are hinged to the first and second long poles, respectively. The climbing rods, the first and second long poles are located on the same plane, and their hinge movement trajectories lie within this plane. Limiting structures are provided at the corresponding hinge positions on the first and second long poles, ensuring the climbing rods are perpendicularly fixed to them. This technical solution uses a detachable connection structure to fix the folding ladder to the outside of the truck compartment, making it easier to disassemble. Simultaneously, the hinged relationship between the first and second long poles and the climbing rods enables the folding and storage of the folding ladder, reducing its space occupation when not in use.

[0003] However, in the above-mentioned solutions and existing technologies, the ladders used in refrigerated trucks are usually welded vertically to the refrigerated compartment of the truck. When in use, the bottom of the ladder is high off the ground, requiring operators to step on the tires or use a high stool to climb and use it. This is cumbersome and inconvenient, and needs to be improved and optimized.

[0004] Therefore, this utility model proposes a folding ladder for refrigerated trucks to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a folding ladder for refrigerated trucks to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a folding ladder for a refrigerated truck, comprising: a first ladder 1 and a second ladder 4, wherein the top of the first ladder 1 is hinged to a boss 3 symmetrically connected to the side wall of the refrigerated truck body 2, and the second ladder 4 is movably disposed at the front end of the first ladder 1; symmetrical grooves 5 are provided on both sides of the second ladder 4, and sliders 6 are symmetrically connected to the inner sides of the first ladder 1, the sliders 6 being movably engaged in the grooves 5, and the second ladder 4 being disposed on the side wall of the refrigerated truck body 2 by means of an auxiliary component.

[0007] Preferably, the auxiliary components include L-shaped support rods 7, auxiliary support frames 9, positioning platforms 12, limiting plates 15, and I-shaped plates 17. The L-shaped support rods 7 are symmetrically connected and arranged at the bottom of the second ladder 4. Anti-slip support feet 8 are connected to the bottom of the L-shaped support rods 7. The two ends of the auxiliary support frame 9 are rotatably connected to the two sides of the L-shaped support rods 7. Auxiliary support feet 10 are symmetrically connected to the bottom of the auxiliary support frame 9. Connecting ropes 11 are connected to the side walls of the L-shaped support rods 7. The other end of the connecting ropes 11 is connected to the side wall of the auxiliary support frame 9.

[0008] Preferably, the positioning platform 12 is connected to the side wall of the refrigerated truck body 2. The upper end of the positioning platform 12 is provided with a slot 13. The auxiliary support frame 9 is snapped into the slot 13. The side wall of the slot 13 is symmetrically provided with slots 14. A limiting plate 15 is rotatably connected in the slot 14. The limiting plate 15 contacts and abuts against the inner side wall of the auxiliary support frame 9.

[0009] Preferably, a straight hole 16 is provided on the side wall of the positioning platform 12, and an I-shaped plate 17 is movably engaged in the straight hole 16. The two end plates of the I-shaped plate 17 abut against the two side walls of the positioning platform 12, and the two end plates of the I-shaped plate 17 contact and block the side ends of the limiting plate 15.

[0010] Preferably, a circular groove 18 is provided on the side wall of the I-shaped plate 17, and a hand-tightening bolt 19 is threadedly connected to the side wall of the I-shaped plate 17. A locking block 20 is connected to the end of the hand-tightening bolt 19, and the locking block 20 is movably inserted into the circular groove 18.

[0011] Preferably, the peripheral wall of the locking block 20 abuts against the inner bottom wall of the straight hole 16, and an annular groove 21 is provided on the peripheral wall of the knob of the hand-tightening bolt 19. An L-shaped elastic buckle 22 is connected and provided on the side wall of the I-shaped plate 17, and the end of the L-shaped elastic buckle 22 is engaged in the annular groove 21.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By turning the hand-tightening bolt, the locking block is controlled to retract into the circular groove. The I-shaped plate is moved downward so that its two end plates no longer contact the side of the blocking and limiting plate. The limiting plate is rotated to one side to unlock the auxiliary support frame. After the auxiliary support frame separates from the slot, the position of the first ladder and the auxiliary support frame is adjusted until the anti-slip support feet and the auxiliary support feet are supported on the ground. At this time, personnel can step on the upper frame of the auxiliary support frame to climb the second ladder and the first ladder. The operation is simple, and the ladder can be quickly tilted and erected, improving the comfort of workers when climbing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2This utility model Figure 1 A magnified view of a portion of the image;

[0016] Figure 3 This is a perspective view of the ladder structure connection of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection of the second ladder structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the positioning platform structure connection of this utility model;

[0019] Figure 6 This is a half-sectional view of the positioning platform structure connection of this utility model;

[0020] Figure 7 This is a schematic diagram of the ladder in use according to the present invention.

[0021] In the diagram: 1. First ladder; 2. Refrigerated truck body; 3. Boss; 4. Second ladder; 5. Slide; 6. Sliding block; 7. L-shaped support rod; 8. Anti-slip support foot; 9. Auxiliary support frame; 10. Auxiliary support foot; 11. Connecting rope; 12. Positioning platform; 13. Slot; 14. Slot; 15. Limiting plate; 16. Straight hole; 17. I-beam plate; 18. Circular groove; 19. Hand-tightening bolt; 20. Locking block; 21. Ring groove; 22. L-shaped elastic buckle. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1-7 This utility model provides a technical solution: a folding ladder for a refrigerated truck, comprising: a first ladder 1 and a second ladder 4, wherein the top of the first ladder 1 is hinged to a boss 3 symmetrically connected to the side wall of the refrigerated truck body 2, and the second ladder 4 is movably disposed at the front end of the first ladder 1; the second ladder 4 is symmetrically provided with sliding grooves 5 on both side walls, and sliders 6 are symmetrically connected to the inner side walls of both sides of the first ladder 1, the sliders 6 being movably engaged in the sliding grooves 5, and the second ladder 4 being disposed on the side wall of the refrigerated truck body 2 by means of auxiliary components.

[0024] The sliders 6 on both sides of the inner wall of the first ladder 1 are movably engaged in the grooves 5 on both sides of the second ladder 4, so that the second ladder 4 can move along the position of the first ladder 1. The top of the first ladder 1 is hinged to the bosses 3 symmetrically connected to the side wall of the refrigerated compartment body 2, so that the first ladder 1 and the second ladder 4 can be adjusted in tilt angle to facilitate climbing.

[0025] The L-shaped support rods 7 in the auxiliary components are symmetrically connected to the bottom of the second ladder 4. The bottom of the L-shaped support rods 7 is connected to the anti-slip support feet 8. The two ends of the auxiliary support frame 9 are rotatably connected to the L-shaped support rods 7 on both sides. The bottom of the auxiliary support frame 9 is symmetrically connected to the auxiliary support feet 10. The side wall of the L-shaped support rods 7 is connected to the connecting rope 11. The other end of the connecting rope 11 is connected to the side wall of the auxiliary support frame 9.

[0026] The anti-slip support foot 8 at the bottom of the L-shaped support rod 7 is supported on the ground and is used to erect the first climbing ladder 1 and the second climbing ladder 4. The auxiliary support foot 10 at the bottom of the auxiliary support frame 9 is supported on the ground and is used to assist in supporting the first climbing ladder 1 and the second climbing ladder 4. The connecting rope 11 limits the rotation position of the auxiliary support frame 9.

[0027] The positioning platform 12 is connected to the side wall of the refrigerated truck body 2. The upper end of the positioning platform 12 is provided with a slot 13. The auxiliary support frame 9 is snapped into the slot 13. The side wall of the slot 13 is symmetrically provided with slots 14. A limiting plate 15 is rotatably connected in the slot 14. The limiting plate 15 contacts and abuts against the inner side wall of the auxiliary support frame 9.

[0028] The bottom of the auxiliary support frame 9 is snapped into the slot 13 of the positioning platform 12 to limit the position of the second ladder 4. The bottom end of the limiting plate 15 contacts and abuts against the inner side wall of the auxiliary support frame 9 to fix the position of the second ladder 4.

[0029] A straight hole 16 is provided on the side wall of the positioning platform 12. An I-shaped plate 17 is movably engaged in the straight hole 16. The two end plates of the I-shaped plate 17 abut against the two side walls of the positioning platform 12 and the two end plates of the I-shaped plate 17 contact and block the side ends of the limiting plate 15.

[0030] The I-beam plate 17 moves up and down within the straight hole 16. The end plates on both sides of the I-beam plate 17 contact and abut against the side of the limiting plate 15 to prevent the limiting plate 15 from separating from the inner wall of the auxiliary support frame 9.

[0031] A circular groove 18 is formed on the side wall of the I-beam plate 17. A hand-tightening bolt 19 is threadedly connected to the side wall of the I-beam plate 17. A locking block 20 is connected to the end of the hand-tightening bolt 19 and is movably inserted into the circular groove 18. The peripheral wall of the locking block 20 abuts against the inner bottom wall of the straight hole 16. An annular groove 21 is formed on the peripheral wall of the knob of the hand-tightening bolt 19. An L-shaped elastic buckle 22 is connected to the side wall of the I-beam plate 17 and is engaged in the annular groove 21.

[0032] The hand-tightening bolt 19 can control the locking block 20 to extend from the circular groove 18 into the straight hole 16. The peripheral wall of the locking block 20 abuts against the inner bottom wall of the straight hole 16 to fix the position of the I-shaped plate 17. The end of the L-shaped elastic buckle 22 on the side wall of the I-shaped plate 17 is engaged in the annular groove 21 where the end of the L-shaped elastic buckle 22 is engaged to prevent the hand-tightening bolt 19 from loosening.

[0033] Working principle: After the L-shaped elastic buckle 22 is moved to separate its end from the annular groove 21 on the knob of the hand-tightening bolt 19, the hand-tightening bolt 19 is turned to control the locking block 20 to retract into the circular groove 18. At this time, the peripheral wall of the locking block 20 no longer abuts against the inner bottom wall of the straight hole 16, thereby unlocking the I-shaped plate 17. Then, the I-shaped plate 17 is moved downward so that its two end plates no longer contact and abut against the side end of the limiting plate 15, until the slot 14 is fully exposed. The limiting plate 15 is then rotated to one side so that the bottom end of the limiting plate 15 no longer contacts and abuts against the inner wall of the auxiliary support frame 9, thereby unlocking the auxiliary support frame 9. The slider 6 moves in the slide groove 5, and the second ladder 4 moves upward. During the movement of the second ladder 4, After the auxiliary support frame 9 moves upward with the L-shaped support rod 7 and separates from the slot 13, it tilts and rotates the first ladder 1 to a different angle. Then, it rotates and opens the auxiliary support frame 9. Under the weight of the second ladder 4, it moves in the slide groove 5 with the help of the slider 6, so that the second ladder 4 moves along the position of the first ladder 1 until the anti-slip support foot 8 and the auxiliary support foot 10 are supported on the ground. This completes the tilting and erection of the first ladder 1 and the second ladder 4. At this time, people can climb the second ladder 4 and the first ladder 1 by stepping on the upper frame of the auxiliary support frame 9. The operation is simple and the ladder can be quickly tilted and erected. People do not need to step on tires or use high stools to climb and use the ladder, which improves the comfort of the staff when climbing.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folding ladder for a refrigerated truck, comprising: First ladder (1) and second ladder (4), the top of the first ladder (1) is hinged to the boss (3) symmetrically connected to the side wall of the refrigerated compartment body (2), and the second ladder (4) is movably provided at the front end of the first ladder (1); The feature is that: the second ladder (4) has symmetrically provided sliding grooves (5) on both sides of the side wall, and the first ladder (1) has symmetrically connected sliding blocks (6) on both sides of the inner wall. The sliding blocks (6) are movably engaged in the sliding grooves (5), and the second ladder (4) is set on the side wall of the refrigerated truck body (2) through auxiliary components.

2. A folding ladder for a refrigerated truck according to claim 1, characterized in that: The auxiliary components include an L-shaped support rod (7), an auxiliary support frame (9), a positioning platform (12), a limiting plate (15), and an I-shaped plate (17). The L-shaped support rod (7) is symmetrically connected to the bottom of the second ladder (4). The bottom of the L-shaped support rod (7) is connected to an anti-slip support foot (8). The two ends of the auxiliary support frame (9) are rotatably connected to the two sides of the L-shaped support rod (7). The bottom of the auxiliary support frame (9) is symmetrically connected to an auxiliary support foot (10). The side wall of the L-shaped support rod (7) is connected to a connecting rope (11). The other end of the connecting rope (11) is connected to the side wall of the auxiliary support frame (9).

3. A folding ladder for a refrigerated truck according to claim 2, characterized in that: The positioning platform (12) is connected to the side wall of the refrigerated truck body (2). The upper end of the positioning platform (12) is provided with a slot (13). The auxiliary support frame (9) is snapped into the slot (13). The side wall of the slot (13) is symmetrically provided with slots (14). A limiting plate (15) is rotatably connected in the slot (14). The limiting plate (15) contacts and abuts against the inner side wall of the auxiliary support frame (9).

4. A folding ladder for a refrigerated truck according to claim 3, characterized in that: A straight hole (16) is provided on the side wall of the positioning platform (12). An I-shaped plate (17) is movably engaged in the straight hole (16). The two end plates of the I-shaped plate (17) abut against the two side walls of the positioning platform (12), and the two end plates of the I-shaped plate (17) contact and block the side end of the limiting plate (15).

5. A folding ladder for a refrigerated truck according to claim 4, characterized in that: The side wall of the I-shaped plate (17) is provided with a circular groove (18), and a hand-tightening bolt (19) is threadedly connected to the side wall of the I-shaped plate (17). A locking block (20) is connected to the end of the hand-tightening bolt (19), and the locking block (20) is movably inserted into the circular groove (18).

6. A folding ladder for a refrigerated truck according to claim 5, characterized in that: The peripheral wall of the card block (20) abuts against the inner bottom wall of the straight hole (16). The knob of the hand-tightening bolt (19) has an annular groove (21) on its peripheral wall. An L-shaped elastic buckle (22) is connected to the side wall of the I-shaped plate (17). The end of the L-shaped elastic buckle (22) is engaged in the annular groove (21).

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