Anti-falling self-locking linear trailer tractor

Abstract

The utility model relates to an anti-falling self-locking linear trailer tractor, and belongs to the technical field of tractors, the tractor tractor comprises a shell, a positioning assembly and an extension shell, the positioning assembly is mounted at one end of the shell, the positioning assembly is used for fixing a trailer ball on a tractor, the extension shell is arranged at one end, away from the positioning assembly, of the shell, and the extension shell is embedded in the shell; the extension shell is slidably connected with the shell, the sliding direction is arranged in the length direction of the shell, the extension shell is connected with the trailer, and the effect of adjusting the length of the tractor is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of tractors, and in particular to an anti-slip self-locking linear trailer tractor. Background Art

[0002] The trailer tractor is an important device installed at the front of the trailer. It is the connecting piece that connects the towing ball at the rear of the towing vehicle and the trailer. When towing, the trailer tractor locks the towing ball head in the ball cavity, thus connecting the trailer to the towing vehicle in front. A key point in the design of the tractor is that the ball head cannot be pulled out when locked in the ball cavity. The pulling force required to pull out divides the load level of the tractor.

[0003] A common tractor comprises a shell and a fixing block, wherein the fixing block is mounted on the shell and is used to connect the shell to a trailer ball on a tractor, and one end of the shell away from the fixing block is connected to the trailer.

[0004] During their research and improvement, the R&D personnel found that some tractors are equipped with spare tires at the rear end, and the spare tires are of different sizes. The distance between the trailer ball on the tractor and the trailer is different, and tractors of different lengths are required. However, the length of conventional tractors cannot be adjusted, which makes them more troublesome to use. There is also a defect that the tractor length is not easy to adjust. Utility Model Content

[0005] In order to achieve the effect of adjusting the length of the tractor, the present application provides an anti-slip self-locking linear trailer tractor.

[0006] The present application provides an anti-slip self-locking linear trailer tractor adopts the following technical solution:

[0007] An anti-slip self-locking linear trailer tractor, characterized in that it includes a shell, a positioning assembly and an extension shell, the positioning assembly is installed at one end of the shell, the positioning assembly is used to fix the trailer ball on the tractor, the extension shell is arranged at one end of the shell away from the positioning assembly, the extension shell is embedded in the shell, the extension shell and the shell are slidably connected, the sliding direction is arranged along the length direction of the shell, and the extension shell is connected to the trailer.

[0008] By adopting the above technical solution, when the length of the tractor needs to be adjusted, the extension shell is slid to adjust the overall length of the shell and the extension shell, thereby adjusting the length of the tractor. When the length of the tractor is adjusted to the required length, the positioning assembly is used to fix the trailer ball and the shell, and then the extension shell and the trailer are connected to achieve the effect of adjusting the length of the tractor.

[0009] Optionally, the positioning assembly includes a sliding plate and a fixed plate, the sliding plate passes through the main shell, the sliding plate and the shell are slidably connected, the fixed plate and the sliding plate pass through one end of the shell and are fixedly connected, and the trailer ball is embedded between the shell, the sliding plate and the fixed plate.

[0010] By adopting the above technical solution, when it is necessary to use the positioning assembly to fix the trailer ball, slide the sliding plate to expand the space between the sliding plate, the fixed plate and the shell, insert the trailer ball between the sliding plate, the fixed plate and the shell, and then slide the sliding plate until the sliding plate, the fixed plate and the shell clamp the trailer ball, thereby achieving the effect of fixing the trailer ball.

[0011] Optionally, a semicircular hole is formed at one end of the fixing plate close to the trailer ball, and when the tractor is used, the end of the trailer ball is just embedded in the semicircular hole.

[0012] By adopting the above technical solution and setting the semicircular hole, the trailer ball is just embedded in the semicircular hole, and the head of the trailer ball is limited, so that the connection between the trailer ball and the tractor is more secure, thereby achieving the effect of increasing the stability of the connection between the trailer ball and the tractor.

[0013] Optionally, a return spring is fixed to a ring sleeve at one end of the sliding plate away from the fixed plate. When the tractor is used, the fixed plate and the trailer ball are in close contact, and the return spring is in a compressed state.

[0014] By adopting the above technical solution, when the tractor is used, the fixing plate and the trailer ball are in close contact, and the return spring is in a compressed state, which will give a pulling force to the fixing plate toward the trailer ball, thereby making the connection between the trailer ball and the tractor more secure. The setting of the return spring achieves the effect of increasing the stability of the connection between the trailer ball and the tractor.

[0015] Optionally, a through hole is provided on the shell, a plurality of fixing grooves are provided on the extension shell, a fixing rod is provided on the shell, the fixing rod passes through the through hole and is embedded in any one of the fixing grooves, and the fixing rod, the shell and the extension shell are all slidably connected.

[0016] By adopting the above technical solution, when it is necessary to adjust the length of the traction device, pull out the fixing rod and slide the extension shell to adjust the overall length of the shell and the extension shell. When the overall length of the shell and the extension shell is adjusted to the required length, slide the fixing rod back into the fixing groove to fix the shell and the extension shell. The setting of the fixing rod can achieve the effect of fixing the shell and the extension shell.

[0017] Optionally, a connecting spring is fixed to the ring sleeve on the fixing rod, and when the fixing rod passes through the through hole and is embedded in the fixing groove, the connecting spring is in a natural state.

[0018] By adopting the above technical solution, when the length of the traction device needs to be adjusted, pull out the fixing rod and slide the extension shell to adjust the overall length of the shell and the extension shell. When the overall length of the shell and the extension shell is adjusted to the required length, release the fixing rod, and under the action of the connecting spring, the fixing rod will bounce back into the fixing groove, avoiding the operator from manually sliding the fixing rod back, thereby achieving a convenient and quick effect.

[0019] Optionally, a reinforcing plate is fixed to one end of the sliding plate away from the semicircular hole, a threaded rod is arranged on the reinforcing plate, the threaded rod passes through the reinforcing plate and is connected to the shell, and the threaded rod, the reinforcing plate and the threaded rod are all threadedly connected.

[0020] By adopting the above technical solution, when using the tractor, the threaded rod is rotated, the threaded rod is disengaged from the shell, the trailer ball and the shell are fixed, and then the threaded rod is rotated again, the threaded rod and the shell are connected, the reinforcing plate and the sliding plate are fixed, and the threaded rod and the reinforcing plate are threadedly connected, so that the connection between the sliding plate and the shell is more secure, and the connection between the positioning assembly and the shell is more secure, thereby achieving the effect of increasing the stability of the connection between the positioning assembly and the shell.

[0021] Optionally, a gap is left between the end of the trailer ball and the shell.

[0022] By adopting the above technical solution, a gap is left between the end of the trailer ball and the shell, so that the ball head part of the trailer ball can be rotated, thereby achieving the effect of rotating the ball head part of the trailer ball.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The setting of the housing, positioning assembly and extension shell can achieve the effect of adjusting the length of the tractor;

[0025] 2. The setting of sliding plate and fixed plate can achieve the effect of fixing the trailer ball;

[0026] 3. The semicircular hole and the return spring are set to increase the connection stability between the trailer ball and the tractor;

[0027] 4. Through the arrangement of holes, fixing grooves and fixing rods, the effect of fixing the shell and the extension shell is achieved;

[0028] 5. The setting of the connecting spring achieves a convenient and quick effect;

[0029] 6. The reinforcement plate and the threaded rod are provided to increase the connection stability between the positioning assembly and the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 It is a schematic diagram showing the structure of the positioning component.

[0032] In the figure, 1, shell; 2, positioning assembly; 21, sliding plate; 22, fixing plate; 23, semicircular hole; 24, reset spring; 3, extension shell; 4, through hole; 5, fixing groove; 6, fixing rod; 7, connecting spring; 8, reinforcement plate; 81, threaded rod. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-2 This application is described in further detail.

[0034] The embodiment of the present application discloses an anti-slip self-locking linear trailer tractor.

[0035] Reference Figure 1 A self-locking and anti-dropping linear trailer tractor comprises a shell 1, a positioning assembly 2 and an extension shell 3. The shell 1 is the main part of the tractor, the positioning assembly 2 is used to fix the trailer ball, and the extension shell 3 is used to adjust the length of the tractor.

[0036] Reference Figure 1 The open end of the shell 1 is arranged toward the ground, the positioning assembly 2 includes a sliding plate 21 and a fixed plate 22, the sliding plate 21 passes through the shell 1, the sliding plate 21 is arranged perpendicular to the ground, a reinforcing plate 8 is arranged at one end of the sliding plate 21 away from the ground, the reinforcing plate 8 is perpendicular to the sliding plate 21, the reinforcing plate 8 is fixedly connected to the sliding plate 21, a threaded rod 81 is arranged on the reinforcing plate 8, the threaded rod 81 passes through the reinforcing plate 8 and is inserted into the shell 1, the threaded rod 81 and the reinforcing plate 8 and the shell 1 are all threadedly connected, and the threaded rod 81 is perpendicular to the reinforcing plate 8,

[0037] A return spring 24 is arranged between the shell 1 and the reinforcing plate 8. The return spring 24 is looped on the sliding plate 21. The length direction of the return spring 24 is the same as the length direction of the sliding plate 21. One end of the return spring 24 is fixedly connected to the reinforcing plate 8, and the other end of the return spring 24 is fixedly connected to the outer wall of the shell 1. When the traction device is used, the return spring 24 is in a compressed state.

[0038] When the sliding plate 21 needs to be slid, the threaded rod 81 is rotated, the threaded rod 81 is separated from the housing 1, and the sliding plate 21 is slid. When the sliding is completed, the threaded rod 81 is rotated, and the threaded rod 81 is connected to the housing 1.

[0039] The fixing plate 22 is arranged at the end of the sliding plate 21 away from the reinforcing plate 8, the fixing plate 22 and the sliding plate 21 are perpendicular, one end of the fixing plate 22 is fixedly connected to the sliding plate 21, a semicircular hole 23 is opened at the end of the fixing plate 22 away from the sliding plate 21, the trailer ball is embedded between the shell 1, the sliding plate 21 and the fixing plate 22, the end of the trailer ball is embedded in the semicircular hole 23, and a gap is left between the end of the trailer ball and the shell 1. When the trailer ball and the shell 1 are connected, the trailer ball can be rotated. When the tractor needs to be used, the trailer ball is connected to the shell 1, the threaded rod 81 is rotated, the threaded rod 81 is separated from the shell 1, the sliding plate 21 is slid, the trailer ball is embedded between the shell 1, the sliding plate 21 and the fixing plate 22, the sliding plate 21 is loosened, and the threaded rod 81 is rotated again to install the threaded rod 81.

[0040] Reference Figure 1 The extension shell 3 is arranged at the end of the shell 1 away from the trailer ball. The extension shell 3 and the shell 1 have the same length direction. The extension shell 3 is embedded in the shell 1. The extension shell 3 and the shell 1 are slidably connected, and the sliding direction is set along the length direction of the shell 1. A through hole 4 is opened at the end of the shell 1 away from the trailer ball. A plurality of fixing grooves 5 are opened on the extension shell 3. The plurality of fixing grooves 5 are arranged at equal intervals along the length direction of the extension shell 3. The length directions of the plurality of fixing grooves 5 are perpendicular to the length direction of the extension shell 3. A fixing rod 6 is arranged on the shell 1. The fixing rod 6 passes through the through hole 4 and is embedded in any one of the fixing grooves 5. The fixing rod 6 and the shell 1 and the extension shell 3 are all slidably connected, and the sliding direction is set along the length direction of the fixing groove 5.

[0041] A connecting spring 7 is provided on the ring sleeve of the fixing rod 6, and the length direction of the connecting spring 7 is the same as the length direction of the fixing rod 6. One end of the connecting spring 7 is fixedly connected to one end of the fixing groove 5 exposed outside the fixing rod 6, and the other end of the connecting spring 7 is fixedly connected to the outer wall of the shell 1. When the fixing rod 6 passes through the through hole 4 and is embedded in the fixing groove 5, the connecting spring 7 is in a natural state. When the length of the traction device needs to be adjusted, the fixing rod 6 is pulled out and the extension shell 3 is slid to adjust the overall length of the shell 1 and the extension shell 3. When the overall length of the shell 1 and the extension shell 3 is adjusted to the required length, the fixing rod 6 is released.

[0042] The implementation principle of the anti-slip self-locking linear trailer tractor according to the embodiment of the present application is: determine the required length of the tractor according to the specific distance between the tractor and the trailer, pull out the fixing rod 6, and slide the rod extension shell 3 to adjust the length of the tractor. When the length of the tractor is adjusted to the required length, connect the extension shell 3 and the trailer, rotate the threaded rod 81, slide the sliding plate 21, embed the trailer ball of the tractor, loosen the sliding plate 21, and rotate the threaded rod 81 to fix it.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-drop self-locking linear trailer tractor, characterized in that: The invention comprises a shell (1), a positioning assembly (2) and an extension shell (3), wherein the positioning assembly (2) is mounted on one end of the shell (1), the positioning assembly (2) is used to fix a trailer ball on a tractor, the extension shell (3) is arranged at one end of the shell (1) away from the positioning assembly (2), the extension shell (3) is embedded in the shell (1), the extension shell (3) and the shell (1) are slidably connected, the sliding direction is arranged along the length direction of the shell (1), and the extension shell (3) is connected to the trailer.

2. The anti-drop self-locking linear trailer tractor according to claim 1, characterized in that: The positioning assembly (2) comprises a sliding plate (21) and a fixing plate (22), wherein the sliding plate (21) passes through the main body shell (1), the sliding plate (21) and the shell (1) are slidably connected, the fixing plate (22) and the sliding plate (21) pass through one end of the shell (1) and are fixedly connected, and the trailer ball is embedded between the shell (1), the sliding plate (21) and the fixing plate (22).

3. The anti-drop self-locking linear trailer tractor according to claim 2, characterized in that: The fixing plate (22) is provided with a semicircular hole (23) at one end close to the trailer ball. When the tractor is used, the end of the trailer ball is just embedded in the semicircular hole (23).

4. The anti-drop self-locking linear trailer tractor according to claim 2, characterized in that: A return spring (24) is fixed to one end of the sliding plate (21) away from the fixed plate (22). When the tractor is used, the fixed plate (22) and the trailer ball are in close contact, and the return spring (24) is in a compressed state.

5. The anti-drop self-locking linear trailer tractor according to claim 1, characterized in that: The shell (1) is provided with a through hole (4), the extended shell (3) is provided with a plurality of fixing grooves (5), the shell (1) is provided with a fixing rod (6), the fixing rod (6) passes through the through hole (4) and is embedded in any one of the fixing grooves (5), and the fixing rod (6) and the shell (1) and the extended shell (3) are all slidably connected.

6. The anti-drop self-locking linear trailer tractor according to claim 5, characterized in that: A connecting spring (7) is fixed to the upper ring sleeve of the fixing rod (6). When the fixing rod (6) passes through the through hole (4) and is embedded in the fixing groove (5), the connecting spring (7) is in a natural state.

7. The anti-drop self-locking linear trailer tractor according to claim 3, characterized in that: A reinforcing plate (8) is fixed to one end of the sliding plate (21) away from the semicircular hole (23); a threaded rod (81) is provided on the reinforcing plate (8); the threaded rod (81) passes through the reinforcing plate (8) and is connected to the housing (1); the threaded rod (81) and the reinforcing plate (8) and the threaded rod (81) are all threadedly connected.

8. The anti-drop self-locking linear trailer tractor according to claim 1, characterized in that: A gap is left between the end of the trailer ball and the housing (1).

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