Novel multifunctional traction tow hook

Abstract

The utility model discloses a novel multifunctional traction tow hook, which belongs to the technical field of tow hooks, and comprises a mounting buckle, a hook ring and a connecting component, and the mounting buckle is used for connecting a cross rod at the tail of a forklift; the shackle is mounted at the end part of a frame of the flat car; the connecting assembly is used for connecting the mounting buckle and the shackle and comprises two connecting rods and two mounting blocks, and the two connecting rods are kept parallel and are rotationally connected with the two mounting blocks respectively to form a movable parallelogram structure; wherein one mounting block is fixedly connected with a mounting buckle, and the side wall of the other mounting block is provided with a connecting structure used for being connected with a shackle. According to the novel multifunctional traction tow hook, through a parallelogram structure formed by the connecting assemblies, large-range connection height adjustment is achieved, and the height difference between a forklift and a flat car does not become a connection obstacle any more.

Description

Technical Field

[0001] This utility model belongs to the field of trailer hitch technology, and in particular relates to a new type of multi-functional traction trailer hitch. Background Technology

[0002] As a crucial sector of energy production, coal mine safety has always been a primary concern. However, water hazards, one of the five major natural disasters in coal mines, pose a serious threat to safety. In particular, water inrush accidents are a major type of serious and catastrophic coal mine accident. Therefore, during tunneling and mining, it is essential to drain water from the coal seam and roof in advance to ensure production safety. This process requires drilling numerous drainage boreholes. In the specific operation of drainage work, flatbed trailers and multi-functional cable cars are typically towed by on-site powered vehicles (such as loaders and forklifts). However, due to the different types of powered vehicles, the height of their towing hooks varies. The maximum allowable connection height of flatbed trailers and multi-functional cable cars, without affecting their steering, often differs from the towing height of the powered vehicles, making direct connection impossible.

[0003] To address this connection issue, a flexible steel wire rope connection was attempted for traction. However, practice revealed that the flexible steel wire rope connection failed to effectively control the equipment's direction during downhill driving, sudden stops, and reversing, posing significant safety hazards and increasing the risk of accidents. Therefore, how to safely and effectively resolve the mismatch between the trailer hook and the loader hook when towing a flatbed truck has become an urgent technical challenge for equipment transfer and traction during water exploration and release operations.

[0004] To address these issues, we propose a new type of multi-functional traction trailer hook. Utility Model Content

[0005] The purpose of this utility model is to solve the problem of mismatch between trailer hooks when a forklift tows a flatbed truck in the prior art, and to propose a new type of multi-functional towing trailer hook.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A new type of multi-functional towing trailer hitch includes:

[0008] Mounting clips are used to connect the crossbar at the rear of the forklift.

[0009] Hook and loop, installed at the end of the flatbed truck frame;

[0010] A connecting assembly for connecting the mounting buckle and the hook includes two connecting rods and two mounting blocks. The two connecting rods are kept parallel and rotatably connected to the two mounting blocks respectively, forming a movable parallelogram structure.

[0011] One of the mounting blocks is fixedly connected to the mounting buckle, and the other mounting block has a connecting structure on its side wall for connecting the hook and ring.

[0012] Preferably, the mounting buckle is a C-shaped steel plate structure, and the opening of the mounting buckle is adapted to the cross section of the crossbar at the rear of the loader.

[0013] Preferably, the mounting buckle has a through hole, and a limiting bolt passes through the through hole.

[0014] Preferably, the mounting block has two parallel connecting shafts on its side, and the end of the connecting rod has a connecting hole that matches the connecting shaft, and the connecting shaft is rotatably connected to the connecting hole.

[0015] Preferably, one of the connecting rods is provided with a limiting plate at its end, and the limiting plate has a plurality of limiting holes arranged in a circumferential array. The mounting block corresponding to the limiting plate is provided with a first insertion hole corresponding to the position of the limiting hole, and a limiting rod is inserted into the insertion hole.

[0016] Preferably, the connection structure includes a U-shaped plate mounted on the mounting block, the U-shaped plate having a through-hole, the hook being able to enter the U-shaped plate and remain coaxial with the second hole, and a pin passing through the second hole.

[0017] Preferably, the spacing between the inner walls of the U-shaped plate is greater than the thickness of the hook and loop.

[0018] Preferably, the pin includes a rod body, a pull ring is provided at the top of the rod body, and multiple arrayed mounting slots are provided at the bottom of the rod body, with outwardly arched spring pieces fixed in the mounting slots.

[0019] In summary, the technical effects and advantages of this utility model are as follows:

[0020] This new multi-functional towing trailer hook, through the parallelogram structure formed by the connecting components, achieves a wide range of connection height adjustment, so that the height difference between the loader and the flatbed truck no longer becomes an obstacle to connection. No matter how the height of the loader and the flatbed truck changes, it can be adapted by adjusting the parallelogram structure, which greatly improves the versatility and flexibility of the trailer hook.

[0021] During height adjustment, due to the characteristics of the parallelogram structure, the two mounting blocks always remain parallel, meaning the mounting block with the connecting structure is always vertical. This ensures the stability of the connection between the connecting structure and the flatbed truck hook, preventing the flatbed truck from being affected by height misalignment. It also reduces the risk of damage or even breakage to the hook, effectively protecting the connection safety.

[0022] By setting multiple arrayed mounting slots at the bottom of the pin rod and outward-arching spring pieces, the hook and U-shaped plate are firmly fixed. Without affecting the flexibility of the pin insertion and removal, the spring piece design prevents the pin from falling off, and ensures the reliability of the connection even when encountering bumps or sudden stops during traction.

[0023] Because this utility model adopts a rigid connection structure, it has higher traction stability and safety compared with the traditional soft connection method. During downhill, emergency stop and reversing, it can effectively transmit traction force, accurately control the direction of the equipment, and ensure the smoothness and safety of transportation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the mismatch in towing height between the forklift and the flatbed truck.

[0025] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the height adjustment structure of this utility model;

[0027] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 5 for Figure 2 Enlarged structural diagram of section A;

[0029] Figure 6 for Figure 4 Enlarged structural diagram of section B;

[0030] Figure 7 This is a schematic diagram of the pin structure in this utility model.

[0031] In the diagram: 1. Mounting buckle; 11. Through hole; 12. Limiting bolt; 2. Connecting assembly; 21. Connecting rod; 22. Mounting block; 23. Connecting shaft; 24. Limiting plate; 25. Limiting hole; 26. Limiting rod; 27. U-shaped plate; 28. Pin; 281. Rod body; 282. Pull ring; 283. Spring piece; 3. Hook ring. Detailed Implementation

[0032] Taking the Balasu Coal Mine as an example, its hydrogeological conditions are unique, with highly water-rich coal seams and a large volume and pressure of water in the roof aquifer. To ensure safety during tunneling and mining, it is necessary to drain the water from the coal seam and roof in advance. Therefore, a large number of drainage boreholes need to be drilled. During the drainage construction, flatbed trailers and multi-functional cable trucks need to be towed by loaders. Figure 1As shown, the height of the forklift towing hook is 680mm, while the maximum allowable height for the flatbed trailer and the multi-functional cable car is 480mm without affecting their steering. Therefore, there is a height difference of 200mm, making it impossible to connect them.

[0033] Reference Figure 2-4 A new type of multi-functional towing trailer hook includes a mounting buckle 1, a connecting component 2, and a hook ring 3.

[0034] Mounting buckle 1 is used to connect the crossbar at the rear of the loader. Mounting buckle 1 is fixedly fastened to the crossbar of the loader. Mounting buckle 1 is a C-shaped steel plate structure. The opening of mounting buckle 1 is adapted to the crossbar section at the rear of the loader. The C-shaped structure of mounting buckle 1 is the approximate shape, and the specific shape is consistent with the crossbar section shape of the loader, so that mounting buckle 1 can fit snugly with the loader crossbar.

[0035] Mounting buckle 1 is formed by stamping and bending steel plate. The length of mounting buckle 1 needs to exceed the crossbar of the loader. Mounting buckle 1 has a through hole 11. The through hole 11 is located on the part of mounting buckle 1 that exceeds the crossbar of the loader. A limiting bolt 12 is inserted into the through hole 11. During installation, first pull out the limiting bolt 12, insert the opening of mounting buckle 1 into the crossbar of the loader, and then insert the limiting bolt 12 into the through hole 11 for limiting.

[0036] The hook 3 is installed at the end of the flatbed truck frame. The hook 3 is a factory-equipped structure for the traction end of the flatbed truck and will not be described here.

[0037] Reference Figure 2-4 The connecting component 2 is used to connect the mounting buckle 1 and the hook ring 3. It includes two connecting rods 21 and two mounting blocks 22. The two connecting rods 21 are kept parallel and rotatably connected to the two mounting blocks 22 respectively, forming a movable parallelogram structure. Due to the movable nature of the parallelogram structure, one mounting block 22 is fixedly connected to the mounting buckle 1, and the side wall of the other mounting block 22 is provided with a connecting structure for connecting the hook ring 3. The position of the mounting block 22 fixed to the mounting buckle 1 remains unchanged. The height position of the other mounting block 22 can be changed by the movement of the parallelogram structure, thereby adapting to the traction height difference of different flatbed trucks and forklifts, greatly improving the versatility and flexibility of the trailer hook.

[0038] Because the parallelogram structure remains parallel to each side during movement, meaning the two mounting blocks 22 are always vertical, the mounting blocks 22 with the connecting structure remain vertical after adjusting the trailer connection height. This ensures the stability of the connection between the connecting structure and the flatbed hook 3, preventing the flatbed from being affected by height misalignment and reducing the risk of damage or even breakage to the hook 3, thus effectively protecting the connection safety.

[0039] Reference Figure 2-4The mounting block 22 has two parallel connecting shafts 23 on its side. The end of the connecting rod 21 has a connecting hole that matches the connecting shaft 23. The connecting shaft 23 is rotatably connected to the connecting hole. The parallelogram structure can be flexibly deformed by the rotation between the connecting rod 21 and the connecting shaft 23.

[0040] Reference Figure 2-5 One of the connecting rods 21 has a limiting plate 24 at its end. The limiting plate 24 has multiple limiting holes 25 arranged in a circumferential array. The mounting block 22 corresponding to the limiting plate 24 has a first insertion hole corresponding to the position of the limiting hole 25. A limiting rod 26 passes through the insertion hole. When the parallelogram structure deforms, the connecting rod 21 and the connecting shaft 23 will rotate relative to each other. Therefore, the first insertion hole will correspond to different limiting holes 25. During this process, when the traction height is reached, the limiting rod 26 can be inserted into the first insertion hole and the limiting hole 25 to keep the parallelogram structure stable, thereby facilitating the subsequent docking of the connecting structure with the hook ring 3.

[0041] Reference Figure 6-7 The connecting structure includes a U-shaped plate 27 mounted on the mounting block 22. A second through-hole is provided on the U-shaped plate 27, allowing the hook ring 3 to enter the U-shaped plate 27 and remain coaxial with the second through-hole. A pin 28 passes through the second through-hole. In use, first, the pin 28 is pulled out, allowing the hook ring 3 to enter the U-shaped plate 27. Then, the pin 28 is inserted into the center of the second through-hole and the hook ring 3, completing the connection between the hook ring 3 and the U-shaped plate 27. The two side walls of the U-shaped plate 27 are vertically distributed. After the hook ring 3 enters the U-shaped plate 27, the flatbed cart can rotate within a certain range via the hook ring 3 and the pin 28, thus ensuring that the steering of the flatbed cart is not affected.

[0042] The spacing between the inner walls of the U-shaped plate 27 is greater than the thickness of the hook ring 3, forming a certain buffer area. This allows the hook ring 3 to deflect to a certain extent from the pin 28 during traction, thereby reducing the impact on the steering of the flatbed truck and reducing the risk of damage to the hook ring 3 during traction on slopes.

[0043] Reference Figure 6-7, the bolt 28 includes a rod body 281. At the top of the rod body 281, a pull ring 282 is provided. The pull ring 282 facilitates the hand operation during installation and limits the rod body 281 after the bolt 28 is inserted into the second jack. At the bottom of the rod body 281, a plurality of mounting grooves are arranged in an array. Elastic pieces 283 that arch outward are fixed in the mounting grooves. One end of the elastic piece 283 is fixed to the mounting groove, and the other end is movably arranged in the mounting groove. When inserting the bolt 28, first, the elastic piece 283 is squeezed and deformed. Since one end of the elastic piece 283 is movably arranged, the elastic piece 283 tends to flatten inward and tighten inward until the elastic piece 283 completely passes through the second jack. Then, the elastic piece 283 resets under the action of elastic force to limit the rod body 281, preventing the bolt 28 from falling off. Even when encountering bumps or sudden stops during the traction process, the reliability of the connection can be ensured.

[0044] The working principle is as follows:

[0045] When it is necessary to transport the water drainage and release drilling equipment, the equipment is carried by the flatbed truck. First, the limit bolt 12 is pulled out, the opening direction of the mounting buckle 1 is clamped onto the cross bar of the forklift, and then the limit bolt 12 is inserted into the through hole 11 for limitation. By changing the height position of the mounting block 22 with the connection structure through the movement of the parallelogram structure, the traction height difference between different flatbed trucks and forklifts can be adapted. When the traction height is reached, the limit rod 26 can be inserted into the first jack and the limit hole 25 to keep the parallelogram structure stable, thereby facilitating the subsequent docking work between the connection structure and the hook ring 3. The bolt 28 is pulled out to enable the hook ring 3 to enter the U-shaped plate 27, and then the bolt 28 is inserted into the center of the second jack and the hook ring 3 to complete the connection between the hook ring 3 and the U-shaped plate 27. After the connection is completed, both ends of the connection component 2 are respectively connected to the cross bar of the forklift and the flatbed truck. Then, the limit rod 26 can be pulled out, and the flatbed truck is driven by the forklift to move for the transportation of the equipment.

[0046] Within 4 months of the on-site application of the present utility model, the new multi-functional traction trailer hook has completed 6 long-distance relocation traction works for water exploration and drainage drilling rigs; 12 traction works for multi-functional vehicles supporting water exploration and drainage drilling rigs; 2 traction works for lowering and hoisting the roadway repair machine; 6 traction works for lowering the China Coal Science and Engineering equipment and other equipment transportation traction works, having very good practical application value.

Claims

1. A novel multi-functional traction trailer hook, characterized in that, include: Mounting buckle (1) for connecting the crossbar at the rear of the forklift; Hook and loop (3) are installed at the end of the flatbed truck frame; The connecting component (2) is used to connect the mounting buckle (1) and the hook (3). The connecting component (2) includes two connecting rods (21) and two mounting blocks (22). The two connecting rods (21) are kept parallel and rotatably connected to the two mounting blocks (22) respectively to form a movable parallelogram structure. One of the mounting blocks (22) is fixedly connected to the mounting buckle (1), and the other mounting block (22) has a connecting structure on its side wall for connecting the hook (3).

2. The novel multi-functional traction trailer hook according to claim 1, characterized in that, The mounting buckle (1) is a C-shaped steel plate structure, and the opening of the mounting buckle (1) is adapted to the cross section of the crossbar at the rear of the loader.

3. A novel multi-functional traction trailer hook according to claim 2, characterized in that, The mounting buckle (1) has a through hole (11) and a limiting bolt (12) is inserted through the through hole (11).

4. The novel multi-functional traction trailer hook according to claim 1, characterized in that, The mounting block (22) has two parallel connecting shafts (23) on its side. The end of the connecting rod (21) has a connecting hole that matches the connecting shaft (23). The connecting shaft (23) is rotatably connected to the connecting hole.

5. A novel multi-functional traction trailer hook according to claim 1, characterized in that, One of the connecting rods (21) has a limiting plate (24) at its end. The limiting plate (24) has multiple limiting holes (25) arranged in a circumferential array. The mounting block (22) corresponding to the limiting plate (24) has a first insertion hole corresponding to the position of the limiting hole (25). A limiting rod (26) passes through the insertion hole.

6. A novel multi-functional traction trailer hook according to claim 1, characterized in that, The connection structure includes a U-shaped plate (27) mounted on the mounting block (22), the U-shaped plate (27) having a through-hole, the hook (3) being able to enter the U-shaped plate (27) and remain coaxial with the second hole, and a pin (28) being inserted in the second hole.

7. A novel multi-functional traction trailer hook according to claim 6, characterized in that, The spacing between the inner walls of the U-shaped plate (27) is greater than the thickness of the hook (3).

8. A novel multi-functional traction trailer hook according to claim 6, characterized in that, The pin (28) includes a rod (281), a pull ring (282) is provided at the top of the rod (281), and multiple arrayed mounting slots are provided at the bottom of the rod (281), with outwardly arched spring pieces (283) fixed in the mounting slots.

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