Aluminum alloy semi-trailer towing device

Abstract

This utility model relates to an aluminum alloy semi-trailer towing device, belonging to the technical field of semi-trailer towing devices. It includes a front fixing plate, a rear fixing plate, and a fixing rod. The lower surface of the rear fixing plate is provided with a buffer mechanism, which includes a first fixing block fixed to the lower surface of the rear fixing plate. Two connecting rings are fixed to the outer side of the fixing cylinder. Damping shock absorbers are fixed to the left and right sides of the opposite sides of the connecting rings on both the upper and lower sides. This aluminum alloy semi-trailer towing device, through the design of an annular slider and groove, ensures the stability of the connection structure under various working conditions, reducing wear caused by vibration and steering. The dual shock absorption design of the damping shock absorbers and buffer rubber blocks effectively reduces vertical forces, improving the service life and comfort of the towing device. All components are made of high-strength aluminum alloy and feature a wear-resistant design, reducing the risk of damage due to long-term use.

Description

Technical Field

[0001] This utility model relates to the technical field of semi-trailer traction devices, specifically an aluminum alloy semi-trailer traction device. Background Technology

[0002] A semi-trailer is a trailer whose axle is located behind the vehicle's center of gravity and is equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. The semi-trailer towing device is the docking component between the tank semi-trailer and the tractor. The functions of the semi-trailer towing device are: first, to connect; second, to traction; and third, support.

[0003] For example, CN219312438U discloses a semi-trailer traction device, including a cab fixing seat. The cab fixing seat contains a lubrication assembly, which includes a circular groove with an oil outlet on its inner wall. An oil outlet pipe is installed inside the oil outlet, with one end of the pipe fixedly connected to the outlet end. An oil storage tank is located at the bottom of the oil outlet pipe, with its top fixedly connected to the bottom of the outlet pipe. An oil inlet pipe is located on one side of the oil storage tank. A sliding rod passes through the inside of the oil storage tank, with its outer side slidably connected to the inner wall of the tank. A pressing block is fixedly connected to the top of the sliding rod. In this utility model, the pressing block causes the sliding rod, with a spring, to press down, drawing oil from the storage tank into the circular groove through the outlet pipe. Because the inlet pipe has a one-way valve, oil will not enter the inlet pipe from the storage tank. Releasing the pressing block returns the spring to its original position. This operation significantly reduces the use of lubricating oil.

[0004] While the aforementioned patent can significantly reduce the use of lubricating oil, the existing semi-trailer traction device lacks a buffer structure. When the power unit goes uphill or travels on uneven roads, it generates vertical forces, which in turn affects the service life and comfort of the traction device, reducing its practicality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an aluminum alloy semi-trailer traction device, which has advantages such as improving the service life and comfort of the traction device. It solves the problem that existing semi-trailer traction devices lack a buffer structure, and when the power unit goes uphill or travels on uneven roads, vertical forces are generated, which in turn affect the service life and comfort of the traction device and reduce its practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A towing device for an aluminum alloy semi-trailer includes a front fixing plate, a rear fixing plate, and a fixing rod, wherein a buffer mechanism is provided on the lower surface of the rear fixing plate.

[0008] The buffer mechanism includes a first fixing block fixed to the lower surface of the rear fixing plate. A fixing cylinder is slidably connected to the outside of the fixing rod. Two connecting rings are fixed to the outside of the fixing cylinder. Damping shock absorbers are fixed to the left and right sides of the opposite side of the upper and lower connecting rings. Connecting blocks are fixed to the opposite side of the upper and lower damping shock absorbers. The upper surface of the upper connecting block is fixedly connected to the lower surface of the first fixing block. A second fixing block is fixed to the lower surface of the lower connecting block. A connecting cylinder is fixed to the opposite side of the first fixing block and the second fixing block.

[0009] The buffer mechanism also includes a buffer rubber block fixed on the opposite side of the first fixed block and the second fixed block. The buffer rubber block is located inside the communicating cylinder. The opposite sides of the upper and lower buffer rubber blocks are fixedly connected to the top and bottom ends of the fixed rod. The interior of the upper and lower communicating cylinders is provided with annular grooves. The interior of the upper and lower annular grooves is slidably connected with annular sliders. The annular sliders on the upper and lower sides are fixed to the upper and lower sides of the outside of the fixed rod.

[0010] Furthermore, a connecting frame is rotatably connected to the lower surface of the vehicle head fixing plate via a rotating bearing, and the right side of the connecting frame is fixedly connected to the left side of the fixing cylinder.

[0011] Furthermore, the upper surfaces of both the front and rear mounting plates are provided with four mounting holes.

[0012] Furthermore, the annular slider moves linearly up and down inside the annular groove.

[0013] Furthermore, the damping shock absorber includes a first damping rod, a second damping rod is slidably connected inside the first damping rod, and a spring is movably fitted on the outside of the first damping rod.

[0014] Furthermore, the connecting rings on the upper and lower sides are symmetrically distributed on the upper and lower sides of the transverse central axis of the fixed cylinder.

[0015] Furthermore, the fixed cylinder moves linearly up and down on the outside of the fixed rod.

[0016] Furthermore, the first fixing block is located on the longitudinal centerline of the rear fixing plate.

[0017] Compared with the prior art, this utility model provides an aluminum alloy semi-trailer traction device, which has the following beneficial effects:

[0018] This aluminum alloy semi-trailer towing device, through the design of annular sliders and grooves, ensures the stability of the connection structure under various working conditions, reducing wear caused by vibration and steering. The dual shock absorption design of damping shock absorbers and buffer rubber blocks effectively reduces vertical forces, improving the service life and comfort of the towing device. The connecting frame is rotatably connected to the cab fixing plate through bearings, ensuring flexible and reliable steering. All components are made of high-strength aluminum alloy materials and wear-resistant design, reducing the risk of damage caused by long-term use. Attached Figure Description

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

[0020] Figure 2 This is a schematic diagram of the buffer mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the fixed cylinder and the fixed rod of this utility model.

[0022] In the diagram: 1. Front fixing plate, 2. Rear fixing plate, 3. Fixing rod, 4. Buffer mechanism, 401. First fixing block, 402. Fixing cylinder, 403. Connecting ring, 404. Damping shock absorber, 405. Connecting block, 406. Second fixing block, 407. Connecting cylinder, 408. Buffer rubber block, 409. Annular groove, 410. Annular slider, 5. Connecting frame. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 The aluminum alloy semi-trailer traction device in this embodiment includes a front fixing plate 1, a rear fixing plate 2 and a fixing rod 3. The lower surface of the rear fixing plate 2 is provided with a buffer mechanism 4.

[0025] In this embodiment, the upper surfaces of both the front mounting plate 1 and the rear mounting plate 2 are provided with four mounting holes.

[0026] Specifically, the front mounting plate 1 and the rear mounting plate 2 can be fixed to the power unit and the semi-trailer respectively through the mounting holes, so as to realize the traction of the semi-trailer by the power unit.

[0027] It should be noted that the front mounting plate 1 is fixed to the power unit, and the rear mounting plate 2 is fixed to the semi-trailer, thereby connecting the power unit and the semi-trailer. The connecting frame 5 is rotatably connected to the lower surface of the front mounting plate 1 through the bearing to facilitate steering. The traction of the power unit to the semi-trailer is achieved by the traction action of the front mounting plate 1 and the connecting frame 5 on the rear mounting plate 2.

[0028] Please see Figures 2 to 3 In this embodiment, the buffer mechanism 4 includes a first fixing block 401 fixed to the lower surface of the rear fixing plate 2, a fixing cylinder 402 slidably connected to the outside of the fixing rod 3, two connecting rings 403 fixed to the outside of the fixing cylinder 402, damping shock absorbers 404 fixed to the left and right sides of the opposite side of the upper and lower connecting rings 403, and connecting blocks 405 fixed to the opposite side of the upper and lower damping shock absorbers 404. The upper surface of the upper connecting block 405 is fixedly connected to the lower surface of the first fixing block 401, and a second fixing block 406 is fixed to the lower surface of the lower connecting block 405. A connecting cylinder 407 is fixed to the opposite side of the first fixing block 401 and the second fixing block 406.

[0029] Specifically, all components of the semi-trailer's traction device are made of high-strength aluminum alloy.

[0030] Specifically, the buffer mechanism 4 also includes a buffer rubber block 408 fixed on the opposite side of the first fixed block 401 and the second fixed block 406. The buffer rubber block 408 is located inside the connecting cylinder 407. The opposite sides of the upper and lower buffer rubber blocks 408 are fixedly connected to the top and bottom ends of the fixed rod 3. The interior of the upper and lower connecting cylinders 407 is provided with annular grooves 409. The interior of the upper and lower annular grooves 409 is slidably connected with annular sliders 410. The annular sliders 410 are fixed on the upper and lower sides of the outside of the fixed rod 3. The lower surface of the car head fixing plate 1 is rotatably connected to the connecting frame 5 through a rotating bearing. The right side of the connecting frame 5 is fixedly connected to the left side of the fixed cylinder 402.

[0031] The annular slider 410 moves linearly up and down inside the annular groove 409. The damping shock absorber 404 includes a first damping rod, and a second damping rod is slidably connected inside the first damping rod. A spring is movably fitted on the outside of the first damping rod. The upper and lower connecting rings 403 are symmetrically distributed on the upper and lower sides of the transverse central axis of the fixed cylinder 402. The fixed cylinder 402 moves linearly up and down outside the fixed rod 3. The first fixed block 401 is located on the longitudinal central axis of the rear fixed plate 2.

[0032] It should be noted that when the power unit goes uphill, it will generate vertical forces. The damping shock absorbers 404 on the upper and lower sides can buffer and reduce the shocks. At the same time, the buffer rubber blocks 408 on the upper and lower sides can compress and absorb energy, which can reduce the vertical forces, improve the service life and comfort of the traction device, and thus ensure the stability of the traction device, reduce wear, and extend its service life.

[0033] The working principle of the above embodiments is as follows:

[0034] In use, the front mounting plate 1 is fixed to the power unit, and the rear mounting plate 2 is fixed to the semi-trailer, thus connecting the power unit and the semi-trailer. The connecting frame 5 is rotatably connected to the lower surface of the front mounting plate 1 via bearings for easy steering. The traction action of the front mounting plate 1 and the connecting frame 5 on the rear mounting plate 2 enables the power unit to traction the semi-trailer. When the power unit goes uphill, it generates vertical forces. The damping shock absorbers 404 on the upper and lower sides can buffer and reduce the shocks, while the buffer rubber blocks 408 on the upper and lower sides compress and absorb energy, which can reduce the vertical forces, improve the service life and comfort of the traction device, and thus ensure the stability of the traction device, reduce wear, and extend its service life.

[0035] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] 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 towing device for an aluminum alloy semi-trailer, comprising a front fixing plate (1), a rear fixing plate (2), and a fixing rod (3), characterized in that: The lower surface of the rear fixing plate (2) is provided with a buffer mechanism (4); The buffer mechanism (4) includes a first fixing block (401) fixed to the lower surface of the rear fixing plate (2), a fixing cylinder (402) slidably connected to the outside of the fixing rod (3), two connecting rings (403) fixed to the outside of the fixing cylinder (402), damping shock absorbers (404) fixed to the left and right sides of the opposite side of the upper and lower connecting rings (403), and connecting blocks (405) fixed to the opposite side of the upper and lower damping shock absorbers (404). The upper surface of the upper connecting block (405) is fixedly connected to the lower surface of the first fixing block (401), and a second fixing block (406) is fixed to the lower surface of the lower connecting block (405). A connecting cylinder (407) is fixed to the opposite side of the first fixing block (401) and the second fixing block (406). The buffer mechanism (4) further includes a buffer rubber block (408) fixed on the opposite side of the first fixed block (401) and the second fixed block (406). The buffer rubber block (408) is located inside the connecting cylinder (407). The opposite sides of the upper and lower sides of the buffer rubber block (408) are fixedly connected to the top and bottom ends of the fixed rod (3). The interior of the upper and lower sides of the connecting cylinder (407) is provided with annular grooves (409). The interior of the upper and lower sides of the annular grooves (409) is slidably connected with annular sliders (410). The annular sliders (410) on the upper and lower sides are fixed on the upper and lower sides outside the fixed rod (3).

2. The aluminum alloy semi-trailer traction device according to claim 1, characterized in that: The lower surface of the vehicle head fixing plate (1) is rotatably connected to a connecting frame (5) via a rotating bearing, and the right side of the connecting frame (5) is fixedly connected to the left side of the fixing cylinder (402).

3. The aluminum alloy semi-trailer traction device according to claim 1, characterized in that: The upper surfaces of both the front mounting plate (1) and the rear mounting plate (2) are provided with four mounting holes.

4. The aluminum alloy semi-trailer traction device according to claim 1, characterized in that: The annular slider (410) moves linearly up and down inside the annular groove (409).

5. The aluminum alloy semi-trailer traction device according to claim 1, characterized in that: The damping shock absorber (404) includes a first damping rod, a second damping rod is slidably connected inside the first damping rod, and a spring is movably fitted on the outside of the first damping rod.

6. The aluminum alloy semi-trailer traction device according to claim 1, characterized in that: The connecting rings (403) on the upper and lower sides are symmetrically distributed on the upper and lower sides of the transverse central axis of the fixed cylinder (402).

7. The aluminum alloy semi-trailer traction device according to claim 1, characterized in that: The fixed cylinder (402) moves linearly up and down on the outside of the fixed rod (3).

8. The aluminum alloy semi-trailer traction device according to claim 1, characterized in that: The first fixing block (401) is located on the longitudinal centerline of the rear fixing plate (2).

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