Height-adjustable traction device

Abstract

The utility model discloses a traction device with adjustable height, which relates to the technical field of traction devices, and comprises a connecting seat and a traction seat, the lower end of the traction seat is fixedly connected with a traction pin, a height adjusting seat is arranged between the connecting seat and the traction seat, the height adjusting seat comprises a limiting cylinder and a movable cylinder, the limiting cylinder is connected with the movable cylinder in a sliding manner, and the limiting cylinder is connected with the movable cylinder. A plurality of screw rods are fixedly connected to the sides, adjacent to the movable barrel, of the limiting barrel, and every two adjacent screw rods are connected through a threaded barrel; limiting grooves are formed in the lower end of the connecting base and the lower end of the movable cylinder, limiting blocks matched with the limiting grooves are arranged at the upper end of the limiting cylinder and the upper end of the traction base, and the limiting blocks and the limiting grooves are connected in an inserted mode and fixed through pin shafts. The traction device with the adjustable height can adapt to saddles with different heights, the transportation efficiency is improved, the transportation cost is reduced, and the adaptation difficulty of a trailer and a traction headstock is lowered.

Description

Technical Field

[0001] This utility model relates to the field of traction device technology, specifically a height-adjustable traction device. Background Technology

[0002] In the trailer transportation industry, although the design of tractor units and trailers allows them to be used independently, the lack of standardization in the saddle height of different brands of tractor units on the market means that the trailer's towing pin height must match the height of a specific tractor unit for effective engagement. This non-standardized adaptation requirement not only significantly reduces the efficiency of overall transportation operations but also further increases transportation and time costs for businesses due to the need for frequent adjustments or replacements of trailers to accommodate different tractor units.

[0003] Therefore, it is necessary to propose a height-adjustable traction device to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a height-adjustable traction device to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a height-adjustable traction device, including a connecting seat and a traction seat, wherein a traction pin is fixedly connected to the lower end of the traction seat, and a height-adjusting seat is provided between the connecting seat and the traction seat. The height-adjusting seat includes a limiting cylinder and a movable cylinder, wherein the limiting cylinder and the movable cylinder are slidably connected, and multiple screws are fixedly connected to adjacent sides of the limiting cylinder and the movable cylinder, wherein two adjacent screws are connected by a threaded cylinder.

[0008] The lower ends of the connecting seat and the movable cylinder are provided with limiting grooves, and the upper ends of the limiting cylinder and the traction seat are provided with limiting blocks that are adapted to the limiting grooves. The limiting blocks are inserted into the limiting grooves and fixed by pins.

[0009] Preferably, it also includes a height-increasing seat, wherein the upper and lower ends of the height-increasing seat are provided with limiting blocks and limiting grooves.

[0010] Preferably, the limiting groove and the limiting block are provided with through holes at corresponding positions, and the pin passes through the through holes.

[0011] Preferably, the limiting cylinder has a strip-shaped hole at the position corresponding to the through hole.

[0012] Preferably, the two screws have opposite thread directions and are arranged axially along the limiting cylinder.

[0013] Preferably, a platform is provided at the opening of the limiting groove and the bottom of the limiting block, and the distance between the through holes on the limiting groove and the limiting block is the same as the distance between the adjacent platform.

[0014] Preferably, the limiting block is a polygonal column.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a height-adjustable traction device, which has the following beneficial effects:

[0017] 1. This height-adjustable traction device, by setting up a connecting seat, a height-increasing seat, a height-adjusting seat, and a traction seat, allows for adjustment of the height of the traction pin to adapt to saddles of different heights, thereby improving transportation efficiency, reducing transportation costs, and simplifying the adaptation of trailers and tractor units.

[0018] 2. This height-adjustable traction device, by setting an extension seat and a height adjustment seat, increases the adjustable range of the traction pin under the action of the extension seat, and improves the lifting accuracy of the traction pin under the action of the height adjustment seat, thereby increasing its adaptability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0020] Figure 2 This is an exploded view of the structure of this utility model;

[0021] Figure 3 This is a front view schematic diagram of the height adjustment seat of this utility model.

[0022] In the diagram: 1. Connecting seat; 2. Height-increasing seat; 3. Height-adjusting seat; 4. Traction seat; 5. Limiting groove; 6. Limiting block; 7. Through hole; 8. Traction pin; 9. Frame; 10. Pin shaft; 11. Screw; 12. Limiting cylinder; 13. Strip hole; 14. Movable cylinder; 15. Threaded cylinder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-3As shown, a height-adjustable traction device includes a connecting seat 1 and a traction seat 4. A traction pin 8 is fixedly connected to the lower end of the traction seat 4. A height-adjusting seat 3 is provided between the connecting seat 1 and the traction seat 4. The height-adjusting seat 3 includes a limiting cylinder 12 and a movable cylinder 14. The limiting cylinder 12 and the movable cylinder 14 are slidably connected. Multiple screws 11 are fixedly connected to adjacent sides of the limiting cylinder 12 and the movable cylinder 14. Two adjacent screws 11 are connected by a threaded cylinder 15. The lower ends of the connecting seat 1 and the movable cylinder 14 are provided with limiting grooves 5. The upper ends of the limiting cylinder 12 and the traction seat 4 are provided with limiting blocks 6 that are adapted to the limiting grooves 5. The limiting blocks 6 are inserted into the limiting grooves 5 and fixed by a pin 10.

[0025] In use, the connecting seat 1 is fixed to the frame 9, and then the height adjustment seat 3 and the traction seat 4 are connected to the bottom of the connecting seat 1 in sequence. During connection, the limiting block 6 is inserted into the limiting groove 5 and then connected and fixed by the pin 10. After the connection is completed, the height of the traction pin 8 can be adjusted by controlling the sliding of the movable cylinder 14 relative to the limiting cylinder 12 by synchronously rotating multiple threaded cylinders 15, so that it can be adapted to saddles of different heights.

[0026] In some embodiments, the system further includes a heightening seat 2, with limiting blocks 6 and limiting grooves 5 distributed at its upper and lower ends. By providing the heightening seat 2 between the connecting seat 1 and the traction seat 4, the height adjustment range of the traction pin 8 can be increased by adding or removing the heightening seat 2, further enhancing its applicability. Preferably, there are multiple heightening seats 2.

[0027] Specifically, through holes 7 are provided at the corresponding positions of the limiting groove 5 and the limiting block 6, and the pin 10 passes through the through holes 7 to position the limiting block 6 in the limiting groove 5.

[0028] To prevent the limiting cylinder 12 and the pin 10 from interfering with each other during the adjustment process of the height adjustment seat 3, a strip hole 13 is provided at the position corresponding to the through hole 7 on the limiting cylinder 12. By providing the strip hole 13, the limiting cylinder 12 is prevented from blocking the pin 10 and affecting the adjustment range of the height adjustment seat 3.

[0029] Specifically, the two screws 11 have opposite thread directions and are arranged axially along the limiting cylinder 12. When the threaded cylinder 15 is rotated, the two screws 11 move away from or closer to each other to adjust the height of the height adjustment seat 3. Preferably, the plurality of screws 11 are evenly distributed circumferentially along the limiting cylinder 12.

[0030] In some embodiments, a platform is provided at the opening of the limiting groove 5 and the bottom of the limiting block 6, and the through holes 7 on the limiting groove 5 and the limiting block 6 are spaced at the same distance from their adjacent platform.

[0031] By setting the platform and controlling the distance between the through hole 7 and the platform, when the limiting block 6 is inserted into the limiting groove 5, the two platforms come into contact. At this time, the limiting groove 5 is aligned with the through hole 7 on the limiting block 6 so that the pin 10 can pass through the through hole 7.

[0032] To prevent the limiting block 6 from rotating within the limiting groove 5, which would make it difficult to align the through hole 7, the limiting block 6 is set as a polygonal column.

[0033] 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 height-adjustable traction device, characterized in that: It includes a connecting seat (1) and a traction seat (4). The lower end of the traction seat (4) is fixedly connected to a traction pin (8). A height adjustment seat (3) is provided between the connecting seat (1) and the traction seat (4). The height adjustment seat (3) includes a limiting cylinder (12) and a movable cylinder (14). The limiting cylinder (12) and the movable cylinder (14) are slidably connected. Multiple screws (11) are fixedly connected to the adjacent side of the limiting cylinder (12) and the movable cylinder (14). Two adjacent screws (11) are connected by a threaded cylinder (15). The lower ends of the connecting seat (1) and the movable cylinder (14) are provided with limiting grooves (5), and the upper ends of the limiting cylinder (12) and the traction seat (4) are provided with limiting blocks (6) that are adapted to the limiting grooves (5). The limiting blocks (6) are inserted into the limiting grooves (5) and fixed by pins (10).

2. The height-adjustable traction device according to claim 1, characterized in that: It also includes a height-increasing seat (2), wherein the upper and lower ends of the height-increasing seat (2) are provided with limiting blocks (6) and limiting grooves (5).

3. The height-adjustable traction device according to claim 1, characterized in that: The limiting groove (5) and the limiting block (6) are respectively provided with through holes (7), and the pin (10) passes through the through holes (7).

4. The height-adjustable traction device according to claim 3, characterized in that: The limiting cylinder (12) has a strip hole (13) at the position corresponding to the through hole (7).

5. The height-adjustable traction device according to claim 1, characterized in that: The two screws (11) have opposite thread directions and are arranged axially along the limiting cylinder (12).

6. The height-adjustable traction device according to claim 1, characterized in that: The groove opening of the limiting groove (5) and the bottom end of the limiting block (6) are provided with a platform. The through holes (7) on the limiting groove (5) and the limiting block (6) are spaced at the same distance from their adjacent platforms.

7. The height-adjustable traction device according to claim 1, characterized in that: The limiting block (6) is a polygonal column.

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