Small stair hauling device convenient to adjust

Abstract

The small stair hauling device comprises a vehicle body, a supporting rod is fixedly connected to one side of the bottom end of the inner wall of the vehicle body, a containing plate is rotationally connected to the top of the supporting rod, an air cylinder is fixedly installed in the middle of the top end of the inner wall of the vehicle body, and a connecting rod is rotationally connected to the top end of the air cylinder; the top end of the placing plate is fixedly connected with a transverse shell, the inner wall of the transverse shell is rotatably connected with a lead screw through a bearing, the two sides of the surface of the lead screw are both in threaded sleeve connection with displacement cylinders, the top ends of the displacement cylinders are fixedly connected with connecting rods, and the top ends of the connecting rods are fixedly connected with clamping jaws; according to the small stair hauling device convenient to adjust, the placement inclination angle of a small stair can be adjusted according to the length of the small stair, the horizontal occupied space is reduced, placement and transportation are convenient, and the clamping and limiting structure is arranged, so that the situation that the small stair is prone to shaking or falling off when bumping occurs during transportation can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hauling devices, in particular to a small stair hauling device which is easy to adjust. Background Art

[0002] Small stairs usually refer to some portable, simple ladders used for simple height access at home, office or work site.

[0003] Small stairs require a towing device when they are moved, but existing towing devices have the following disadvantages:

[0004] Since the small staircase is long, it takes up a large horizontal space when being towed. The existing towing device cannot adjust its placement angle according to the length of the small staircase, making it inconvenient to place and transport.

[0005] Existing towing devices lack a clamping and fixing structure for small stairs of different sizes, which leads to bumps during transportation and the small stairs are prone to shaking and falling. Utility Model Content

[0006] The purpose of the utility model is to provide an easily adjustable small stair towing device to solve the problems proposed in the above background technology that the existing towing device cannot adjust its placement inclination according to the length of the small staircase, is inconvenient to place and transport, and the towing device lacks a clamping and fixing structure for small staircases of different sizes, resulting in bumps during transportation and the small staircase is prone to shaking and falling.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small stair towing device that is easy to adjust, comprising a car body, one side of the bottom end of the inner wall of the car body is fixedly connected to a support rod, the top of the support rod is rotatably connected to a placement plate, a cylinder is fixedly installed in the middle of the top end of the inner wall of the car body, the top end of the cylinder is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to the middle end of the bottom end of the placement plate, the top end of the placement plate is fixedly connected to a transverse shell, the inner wall of the transverse shell is rotatably connected to a lead screw through a bearing, displacement cylinders are threadedly sleeved on both sides of the lead screw surface, the top end of the displacement cylinder is fixedly connected to a connecting rod, the top end of the connecting rod is fixedly connected to a clamping claw, the top end of the clamping claw is fixedly connected to a connecting seat, one side of the inner wall of the connecting seat is fixedly connected to a spring, and one end of the spring is fixedly connected to a stop rod.

[0008] When using the easily adjustable small stair towing device of the present technical solution, its placement angle can be adjusted according to the length of the small staircase, reducing the horizontal occupied space and facilitating placement and transportation. A clamping and limiting structure is provided to prevent the small staircase from shaking or falling due to bumps during transportation.

[0009] As a preferred technical scheme of the utility model, one end of the lead screw is fixedly connected with a knob through the outer wall of the horizontal shell, and the thread directions on the two sides of the surface of the lead screw are opposite. The knob is arranged to facilitate rotation of the lead screw.

[0010] As a preferred technical scheme of the utility model, the top end of the horizontal shell is provided with a displacement port, and the connecting rod is slidingly connected to the inner wall of the displacement port. The displacement port provides space for movement of the connecting rod.

[0011] As a preferred technical scheme of the utility model, the surface of the clamping jaw is fixedly connected with a rubber pad. The rubber pad is arranged to make the clamping of the small stairway more secure.

[0012] As a preferred technical scheme of the utility model, the inner wall of the connecting seat is provided with a sliding groove, and one end of the supporting rod is slidingly connected to the inner wall of the sliding groove. The sliding groove is arranged to guide and limit the movement of the supporting rod.

[0013] As a preferred technical scheme of the utility model, the bottom of the placement plate is fixedly connected with a baffle, and the surface of the placement plate is uniformly fixedly connected with a plurality of rubber protrusions. The rubber protrusions are arranged to prevent the small stairway from sliding.

[0014] As a preferred technical scheme of the utility model, universal wheels are fixedly installed at the four corners of the bottom end of the vehicle body, and a handle is fixedly connected to the middle of one end of the vehicle body. The handle and the universal wheels are arranged to facilitate movement of the device.

[0015] As a preferred technical scheme of the utility model, a control switch is fixedly installed at the top of one end of the vehicle body, and the air cylinder is electrically connected with an external power source through the control switch. The air cylinder is started or stopped by pressing the control switch.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The air cylinder inside the towing device is started, the connecting rod is used to push the placement plate to adjust the inclination angle, the small stairway is placed on the surface of the placement plate, the baffle is used to support the bottom end, the placement inclination angle of the small stairway is adjusted according to the length of the small stairway, the horizontal space is reduced, and the small stairway is conveniently placed and transported.

[0018] 2. When the small stairway is placed, the knob at the top of the horizontal shell of the placement plate is rotated, the lead screw is rotated, the displacement cylinders on the two sides of the surface of the lead screw move in opposite directions, the two clamping jaws are moved to clamp and fix the two sides of the top of the small stairway, and the baffle is used to limit the vertical direction of the small stairway, so that the small stairway is prevented from shaking or falling during transportation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 A three-dimensional diagram of the placement plate of the present invention;

[0022] Figure 4 It is a side cross-sectional view of the transverse shell of the present invention.

[0023] In the figure: 1. Car body; 2. Support rod; 3. Cylinder; 4. Connecting rod; 5. Placement plate; 6. Baffle; 7. Rubber ridge; 8. Cross shell; 9. Lead screw; 10. Knob; 11. Displacement cylinder; 12. Connecting rod; 13. Clamping claw; 14. Rubber pad; 15. Displacement port; 16. Universal wheel; 17. Handle; 18. Bearing; 19. Control switch; 20. Connecting seat; 21. Spring; 22. Stop rod; 23. Slide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-4 The utility model provides a small stair hauling device that is easy to adjust, including a car body 1, one side of the bottom end of the inner wall of the car body 1 is fixedly connected to a support rod 2, the top of the support rod 2 is rotatably connected to a placing plate 5, a cylinder 3 is fixedly installed in the middle of the top end of the inner wall of the car body 1, the top end of the cylinder 3 is rotatably connected to a connecting rod 4, and one end of the connecting rod 4 is rotatably connected to the middle end of the bottom end of the placing plate 5, and the inclination angle of the placing plate 5 can be adjusted, and the top end of the placing plate 5 is fixedly connected to a transverse shell 8, and the inner wall of the transverse shell 8 is rotatably connected to a lead screw 9 through a bearing 18. Both sides of the surface of the lead screw 9 are threadedly sleeved with a displacement cylinder 11, and the top end of the displacement cylinder 11 is fixedly connected to a connecting rod 12, and the top end of the connecting rod 12 is fixedly connected to a clamping claw 13, which plays a clamping role. The top end of the clamping claw 13 is fixedly connected to a connecting seat 20, and one side of the inner wall of the connecting seat 20 is fixedly connected to a spring 21. One end of the spring 21 is fixedly connected to a stop rod 22, which plays a limiting role.

[0026] When in use, by starting the cylinder 3 inside the towing device, the placing plate 5 can be pushed with the help of the connecting rod 4 to adjust the inclination angle, and then the small staircase is placed on the surface of the placing plate 5, and then the two clamping claws 13 are moved to clamp and fix the top two sides of the small staircase, and the blocking rod 22 is used to limit the vertical direction of the small staircase to prevent the small staircase from shaking or falling due to bumps during transportation. Due to the setting of the spring 21, the blocking rod 22 can be pressed into the connecting seat 20, which is convenient for removing the small staircase from the placing plate 5.

[0027] One end of the lead screw 9 passes through the outer wall of the transverse shell 8 and is fixedly connected to a knob 10 for easy rotation, and the threads on both sides of the surface of the lead screw 9 are in opposite directions. A displacement opening 15 is provided at the top of the transverse shell 8, and the connecting rod 12 is slidably connected to the inner wall of the displacement opening 15 to provide movement space. A rubber pad 14 is fixedly connected to the surface of the clamping jaw 13 to improve the anti-slip property. A slide groove 23 is provided on the inner wall of the connecting seat 20, and one end of the support rod 2 is slidably connected to the inner wall of the slide groove 23 to play a limiting and guiding role.

[0028] When in use, by turning the knob 10 at the top transverse shell 8 of the placement plate 5, the lead screw 9 is driven to rotate. Since the two sides of its surface have opposite thread directions and under the guidance of the displacement port 15, the displacement cylinders 11 on both sides of the surface can move in opposite directions, thereby driving the two clamping claws 13 to move, and in conjunction with the setting of the rubber pad 14, the two sides of the top of the small staircase can be clamped and tightened.

[0029] The bottom of the placement plate 5 is fixedly connected with a baffle 6 to play a supporting role. The surface of the placement plate 5 is evenly fixed with a number of rubber ridges 7 to improve the anti-slip property. Universal wheels 16 are fixedly installed at the four corners of the bottom end of the vehicle body 1. A handle 17 is fixedly connected to the middle of one end of the vehicle body 1 for easy movement. A control switch 19 is fixedly installed on the top of one end of the vehicle body 1. The cylinder 3 is electrically connected to the external power supply through the control switch 19 to control the opening and closing.

[0030] When in use, connect the external power supply, press the control switch 19 to start the cylinder 3, adjust the inclination angle of the placement plate 5, and when the small staircase is placed on the placement plate 5, the baffle 6 supports its bottom end, and the rubber ridges 7 make it less likely to slide and more stable. The universal wheels 16 and the handle 17 are provided to facilitate the movement of the dragging device.

[0031] When the small stair is put on the platform, the lifting device 12 is lifted and lowered, and ...

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A small stair hauling device that is easy to adjust, comprising a vehicle body (1), characterized in that: A support rod (2) is fixedly connected to one side of the bottom end of the inner wall of the vehicle body (1), and the top of the support rod (2) is rotatably connected to a placement plate (5). A cylinder (3) is fixedly installed in the middle of the top end of the inner wall of the vehicle body (1), and the top end of the cylinder (3) is rotatably connected to a connecting rod (4), and one end of the connecting rod (4) is rotatably connected to the middle of the bottom end of the placement plate (5). The top end of the placement plate (5) is fixedly connected to a transverse shell (8), and the inner wall of the transverse shell (8) is rotatably connected to a lead screw (9) through a bearing (18). Both sides of the surface of the lead screw (9) are threadedly sleeved with a displacement cylinder (11), and the top end of the displacement cylinder (11) is fixedly connected to a connecting rod (12), and the top end of the connecting rod (12) is fixedly connected to a clamping claw (13). The top end of the clamping claw (13) is fixedly connected to a connecting seat (20), and one side of the inner wall of the connecting seat (20) is fixedly connected to a spring (21), and one end of the spring (21) is fixedly connected to a blocking rod (22).

2. The adjustable small stair hauling device according to claim 1, characterized in that: One end of the lead screw (9) passes through the outer wall of the transverse shell (8) and is fixedly connected to a knob (10), and the threads on both sides of the surface of the lead screw (9) are in opposite directions.

3. The adjustable small stair hauling device according to claim 1, characterized in that: A displacement opening (15) is provided at the top end of the transverse shell (8), and the connecting rod (12) is slidably connected to the inner wall of the displacement opening (15).

4. The adjustable small stair hauling device according to claim 1, characterized in that: A rubber pad (14) is fixedly connected to the surface of the clamping jaw (13).

5. The adjustable small stair hauling device according to claim 1, characterized in that: A sliding groove (23) is provided on the inner wall of the connecting seat (20), and one end of the support rod (2) is slidably connected to the inner wall of the sliding groove (23).

6. The adjustable small stair hauling device according to claim 1, characterized in that: The bottom of the placement plate (5) is fixedly connected to a baffle (6), and the surface of the placement plate (5) is evenly fixedly connected to a plurality of rubber convex strips (7).

7. The adjustable small stair hauling device according to claim 1, characterized in that: Universal wheels (16) are fixedly mounted at the four corners of the bottom end of the vehicle body (1), and a handle (17) is fixedly connected to the middle of one end of the vehicle body (1).

8. The adjustable small stair hauling device according to claim 1, characterized in that: A control switch (19) is fixedly mounted on the top of one end of the vehicle body (1), and the cylinder (3) is electrically connected to an external power supply via the control switch (19).

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