Height-adjustable traction structure for trailer

Abstract

The utility model is applicable to the technical field of trailer traction, and provides a height-adjustable traction structure for a trailer, which comprises an accommodating box, the bottom of the inner wall of the accommodating box is rotatably connected with a threaded rod, and the top end of the threaded rod extends to the outside of the accommodating box and is fixedly connected with a first twisting handle; the surface of the threaded rod is in threaded connection with a threaded sleeve, one side face of the threaded sleeve is fixedly connected with a connecting block, and the other end of the connecting block movably extends out of the containing box. According to the height-adjustable traction structure for the trailer, after a worker twists a first twisting handle, a threaded sleeve is driven to move along the surface of a threaded rod, then connection of a connecting block is utilized, a connecting base is driven to ascend and descend together, the use height of the connecting base is adjusted, and the height-adjustable traction structure can adapt to different work requirements for adjustment and connection; functionality of the traction structure is increased, and work and use of road rescue and removal of various obstacles on expressways and urban roads are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of trailer traction, and in particular relates to a height-adjustable trailer traction structure. Background Art

[0002] A trailer is a vehicle specifically used for towing cars. It is a special purpose vehicle, mainly used for road rescue, clearing various obstacles on highways and urban roads, including road-breaking vehicles, urban illegal vehicles, and emergency rescue. Trailers have multiple functions such as lifting, pulling, and lifting and traction. There are various types of trailers, which can be selected according to different needs and scenarios.

[0003] In the prior art, trailers are needed for road rescue and clearing various obstacles on highways and urban roads. However, the existing trailer traction structures are mostly simple in structure and single in function, and most of them cannot be height-adjusted, which is not conducive to connection and use to meet different work needs. Utility Model Content

[0004] The utility model provides a height-adjustable trailer traction structure, aiming to solve the problem that most existing trailer traction structures have simple structures and single functions, are unable to be height-adjusted, and are not conducive to connection and use to meet different work requirements.

[0005] The utility model is implemented as follows: a height-adjustable trailer towing structure includes a container box, a threaded rod is rotatably connected to the bottom of the inner wall of the container box, the top end of the threaded rod extends to the outside of the container box and is fixedly connected to a first twist handle, a threaded sleeve is threadedly connected to the surface of the threaded rod, a connecting block is fixedly connected to one side of the threaded sleeve, and the other end of the connecting block is movably extended to the outside of the container box and is fixedly connected to a connecting seat;

[0006] A first bolt is provided on the top of the connecting seat, the bottom end of the first bolt is movable through the interior of the connecting seat and is threadedly connected with a nut, and the middle parts of the front side and the rear side of the storage box are fixedly connected with a connecting plate, and a pin hole is opened on the connecting plate.

[0007] Preferably, the front and rear sides of the inner cavity of the accommodating box are both vertically fixedly connected with guide rods, the front and rear sides of the threaded sleeve are both fixedly connected with support sleeves, and the support sleeves are slidably sleeved on the surface of the guide rod on the same side.

[0008] Preferably, a guide opening for the movement of the connecting block is vertically opened on the surface of the accommodating box.

[0009] Preferably, a surface movable sleeve of the first bolt is provided with an anti-slip gasket, and the anti-slip gasket is located between the top of the nut and the bottom of the connecting seat.

[0010] Preferably, a reinforcing rib is fixedly connected between the inner side surface of the connecting plate and the side wall of the accommodating box.

[0011] Preferably, the bottom end of the accommodating box is fixedly connected to a fixed box, the bottom end of the threaded rod rotates and extends to the inner cavity of the fixed box, and is fixedly connected to a limiting gear, and one end of the inner cavity of the fixed box is provided with a snap-fitting tooth plate that moves in a horizontal direction through a transmission structure, and the snap-fitting tooth plate is adapted to the limiting gear.

[0012] Preferably, the transmission structure includes a second bolt and a second twist handle, the second bolt is rotatably connected to the outer side surface of the clamping tooth plate, the other end of the second bolt extends to the outside of the fixed box, the second twist handle is fixedly connected to the outer end of the second bolt, the surface of the clamping tooth plate is fixedly connected to a sliding block, the inner wall surface of the fixed box is laterally fixedly connected to a guide rail, and the other end of the sliding block is slidably sleeved on the surface of the guide rail.

[0013] Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the utility model provides a towing structure for a height-adjustable trailer, and after the worker twists the first torsion handle, the threaded rod can be driven to rotate. During the rotation of the threaded rod, the threaded sleeve is driven to move along the surface of the threaded rod, and then the connection of the connecting block is used to drive the connecting seat to move up and down together, so as to adjust the use height of the connecting seat, which is convenient for adjusting the connection to meet different work needs, increases the functionality of the towing structure, and is beneficial for road rescue and clearing various obstacles on highways and urban roads. After adjusting the position, the second torsion handle is twisted, and the second bolt is rotated to move, and the engaging tooth plate is driven to move to a state of meshing with the limit gear. The limit gear can be rotated and then engaged and fixed, and then the threaded rod is fixed and limited, thereby improving the stability of the connecting seat after adjusting the height, improving the safety during towing, and facilitating towing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0016] Figure 2 This is a front cross-sectional structural diagram of the present utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle.

[0018] In the figure: 1. accommodating box; 2. threaded rod; 3. threaded sleeve; 4. connecting block; 5. connecting seat; 6. first bolt; 7. nut; 8. anti-slip gasket; 9. guide rod; 10. support sleeve; 11. first twist handle; 12. fixing box; 13. limiting gear; 14. second bolt; 15. snap-fit ​​gear plate; 16. second twist handle; 17. connecting plate; 18. bayonet pin hole; 19. reinforcing rib; 20. guide port; 21. guide rail; 22. sliding block. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] See also Figure 1-3 The utility model provides a technical solution: a height-adjustable trailer traction structure, comprising a accommodating box 1, the bottom of the inner wall of the accommodating box 1 is rotatably connected to a threaded rod 2, the top of the threaded rod 2 extends to the outside of the accommodating box 1 and is fixedly connected to a first twist handle 11.

[0021] The surface of the threaded rod 2 is threadedly connected to a threaded sleeve 3, and one side of the threaded sleeve 3 is fixedly connected to a connecting block 4. The other end of the connecting block 4 is movably extended to the outside of the storage box 1 and is fixedly connected to a connecting seat 5. A guide port 20 for the movement of the connecting block 4 is vertically opened on the surface of the storage box 1.

[0022] A first bolt 6 is provided on the top of the connecting base 5, the bottom end of the first bolt 6 is movable through the interior of the connecting base 5, and is threadedly connected with a nut 7. The middle parts of the front side and the rear side of the storage box 1 are fixedly connected with a connecting plate 17, and a pin hole 18 is opened on the connecting plate 17.

[0023] After the staff twists the first twist handle 11, the threaded rod 2 can be driven to rotate. During the rotation of the threaded rod 2, the threaded sleeve 3 is driven to move along the surface of the threaded rod 2, and then the connection of the connecting block 4 is used to drive the connecting seat 5 to move up and down together to adjust the use height of the connecting seat 5.

[0024] It can be adjusted and connected to suit different work needs, increasing the functionality of the traction structure, facilitating road rescue and clearing various obstacles on highways and urban roads, and after adjusting the position.

[0025] Furthermore, the front and rear sides of the inner cavity of the accommodating box 1 are vertically fixedly connected with guide rods 9, and the front and rear sides of the threaded sleeve 3 are fixedly connected with support sleeves 10, which are slidably sleeved on the surface of the guide rods 9 on the same side.

[0026] In this embodiment, during the movement of the threaded sleeve 3, the support sleeve 10 and the surface of the guide rod 9 are driven to slide, guiding and limiting the movement of the threaded sleeve 3, thereby improving the smoothness and stability of the movement of the threaded sleeve 3.

[0027] Furthermore, a non-slip gasket 8 is provided on the surface of the first bolt 6 , and the non-slip gasket 8 is located between the top of the nut 7 and the bottom of the connecting seat 5 .

[0028] In this embodiment, after the connecting seat 5 is docked with the connecting part of the drag piece, the first bolt 6 is passed through the interior of the connecting seat 5 and the connecting part, and the nut 7 is threadedly connected to the bottom end of the surface of the first bolt 6. After the nut 7 contacts the bottom of the connecting seat 5, the connection operation can be completed. The anti-slip gasket 8 increases the loosening performance of the nut 7 during the contact process and improves the connection stability.

[0029] Furthermore, a reinforcing rib 19 is fixedly connected between the inner side surface of the connecting plate 17 and the side wall of the receiving box 1 .

[0030] In this embodiment, the reinforcing ribs 19 improve the connectivity between the connecting plate 17 and the receiving box 1 , thereby increasing the connection strength between the connecting plate 17 , the bayonet hole 18 and the trailer.

[0031] Furthermore, the bottom end of the accommodating box 1 is fixedly connected to the fixing box 12, the bottom end of the threaded rod 2 rotates and extends to the inner cavity of the fixing box 12, and is fixedly connected to the limiting gear 13, and one end of the inner cavity of the fixing box 12 is provided with a snap-fitting tooth plate 15 that moves in the horizontal direction through a transmission structure, and the snap-fitting tooth plate 15 is adapted to the limiting gear 13.

[0032] Furthermore, the transmission structure includes a second bolt 14 and a second twist handle 16 . The second bolt 14 is rotatably connected to the outer side of the engaging tooth plate 15 , and the other end of the second bolt 14 extends to the outside of the fixing box 12 .

[0033] The second twist handle 16 is fixedly connected to the outer end of the second bolt 14 , a sliding block 22 is fixedly connected to the surface of the clamping gear plate 15 , a guide rail 21 is laterally fixedly connected to the inner wall surface of the fixed box 12 , and the other end of the sliding block 22 is slidably sleeved on the surface of the guide rail 21 .

[0034] In this embodiment, by twisting the second twist handle 16, the second bolt 14 is rotated and moved, and the engaging tooth plate 15 is driven to move to a state of engagement with the limit gear 13. The limit gear 13 can be rotated and then engaged and fixed, thereby fixing the threaded rod 2, improving the stability of the connecting seat 5 after the height is adjusted, improving the safety during the traction process, and facilitating the use of traction work.

[0035] The working principle and usage process of the utility model are as follows: After the utility model is installed, the staff can drive the threaded rod 2 to rotate by twisting the first twist handle 11. During the rotation of the threaded rod 2, the threaded sleeve 3 is driven to move along the surface of the threaded rod 2, and then the connection of the connecting block 4 is used to drive the connecting seat 5 to move up and down together, so as to adjust the use height of the connecting seat 5, which is convenient for adjusting the connection to meet different work needs, increasing the functionality of the traction structure, and facilitating the use of road rescue and clearing various obstacles on highways and urban roads. After adjusting the position, the second twist handle 16 is twisted, and the second bolt 14 is rotated to move, driving the engaging tooth plate 15 to move to a state of meshing with the limit gear 13. The limit gear 13 can be rotated and then clamped and fixed, thereby fixing the threaded rod 2, improving the stability of the connecting seat 5 after adjusting the height, improving the safety during traction, and facilitating traction work.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements 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 height-adjustable trailer traction structure, comprising a housing box (1), characterized in that: The bottom of the inner wall of the accommodating box (1) is rotatably connected to a threaded rod (2), the top end of the threaded rod (2) extends to the outside of the accommodating box (1) and is fixedly connected to a first twist handle (11), the surface of the threaded rod (2) is threadedly connected to a threaded sleeve (3), one side of the threaded sleeve (3) is fixedly connected to a connecting block (4), the other end of the connecting block (4) is movably extended to the outside of the accommodating box (1) and is fixedly connected to a connecting seat (5); A first bolt (6) is provided on the top of the connecting seat (5), the bottom end of the first bolt (6) is movable through the interior of the connecting seat (5) and is threadedly connected with a nut (7), and a connecting plate (17) is fixedly connected to the middle of the front side and the rear side of the accommodating box (1), and a bayonet hole (18) is provided on the connecting plate (17).

2. The height-adjustable trailer traction structure according to claim 1, characterized in that: The front and rear sides of the inner cavity of the accommodating box (1) are both vertically fixedly connected to a guide rod (9), and the front and rear sides of the threaded sleeve (3) are both fixedly connected to a support sleeve (10), and the support sleeve (10) is slidably sleeved on the surface of the guide rod (9) on the same side.

3. The height-adjustable trailer traction structure according to claim 1, wherein: A guide opening (20) for the movement of the connecting block (4) is vertically provided on the surface of the accommodating box (1).

4. The height-adjustable trailer traction structure according to claim 1, wherein: The surface of the first bolt (6) is provided with an anti-slip gasket (8) which is located between the top of the nut (7) and the bottom of the connecting seat (5).

5. The height-adjustable trailer traction structure according to claim 1, wherein: A reinforcing rib (19) is fixedly connected between the inner side surface of the connecting plate (17) and the side wall of the accommodating box (1).

6. The height-adjustable trailer traction structure according to claim 1, wherein: The bottom end of the accommodating box (1) is fixedly connected to a fixing box (12); the bottom end of the threaded rod (2) is rotated and extended to the inner cavity of the fixing box (12) and is fixedly connected to a limit gear (13); one end of the inner cavity of the fixing box (12) is provided with a horizontally movable engaging tooth plate (15) through a transmission structure; the engaging tooth plate (15) is adapted to the limit gear (13).

7. The height-adjustable trailer traction structure according to claim 6, characterized in that: The transmission structure includes a second bolt (14) and a second twist handle (16), the second bolt (14) is rotatably connected to the outer side surface of the engaging tooth plate (15), the other end of the second bolt (14) extends to the outside of the fixed box (12), the second twist handle (16) is fixedly connected to the outer end of the second bolt (14), the surface of the engaging tooth plate (15) is fixedly connected with a sliding block (22), the inner wall surface of the fixed box (12) is transversely fixedly connected with a guide rail (21), and the other end of the sliding block (22) is slidably sleeved on the surface of the guide rail (21).

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