A quick positioning device for tractor coupling seat

By designing a quick positioning device for the tractor coupling seat and using a hydraulic cylinder to drive the telescopic rod to adjust the height of the traction hook, the problem of inconsistent heights when connecting the tractor and the trailer is solved, achieving a fast and stable connection and improving connection efficiency and device stability.

CN224427009UActive Publication Date: 2026-06-30SHANGHAI RUOHAI AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI RUOHAI AUTO PARTS CO LTD
Filing Date
2025-07-25
Publication Date
2026-06-30

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Abstract

This utility model discloses a quick positioning device for a tractor connecting seat, comprising: a fixed plate, an mounting plate inside the fixed plate, and a hydraulic cylinder inside the mounting plate, the hydraulic cylinder being fixedly connected to the mounting plate and having a connector on its side; a support frame on the upper part of the fixed plate, fixedly connected to the fixed plate, and having a sliding groove inside the support frame. This utility model has a telescopic rod at the output end of the hydraulic cylinder, fixedly connected to the bottom of the support plate; a fixed seat on the upper part of the support plate, having a placement groove inside the fixed seat. When the tractor connecting seat is connected to the towing hook, the connecting rod of the towing hook is placed in the placement groove. The hydraulic cylinder is activated, causing the telescopic rod to extend and retract vertically, thereby moving the fixed seat and the connecting rod of the towing hook vertically until they are flush with the height of the tractor connecting seat, facilitating quick positioning and connection, and improving connection efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of tractor technology, and more specifically to a quick positioning device for tractor connecting seats. Background Technology

[0002] Tractor-trailers typically possess powerful power systems and robust body structures to ensure efficient towing of heavy loads. Their power systems may include high-performance diesel engines or electric motors, providing sufficient torque and power to meet various towing demands. The body is constructed from high-strength materials to withstand the immense forces generated during towing. Structurally, tractor-trailers feature specially designed tow hooks or couplings for securely connecting to the towed vehicle or cargo. These couplings undergo rigorous testing and certification to ensure a safe and stable connection during towing. Furthermore, tractor-trailers may be equipped with various auxiliary systems, such as air braking systems, suspension systems, and steering systems, to enhance their towing capacity and driving stability.

[0003] When connecting the tractor and the trailer, the height of the towing hook and the connecting seat cannot be uniform, which can easily cause connection failure. Therefore, a new technical solution is needed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a quick positioning device for the tractor connecting seat, which solves the problem that when the tractor and the carriage are connected, the height of the traction hook and the connecting seat cannot be uniform, which can easily cause the connection to fail.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick positioning device for a tractor connecting seat, comprising: a fixed plate, an mounting plate disposed inside the fixed plate and a hydraulic cylinder disposed inside the mounting plate, the hydraulic cylinder being fixedly connected to the mounting plate and having a connector disposed on the side of the hydraulic cylinder, a support frame disposed on the upper part of the fixed plate and being fixedly connected to the fixed plate, a sliding groove disposed inside the support frame and a sliding rod disposed inside the sliding groove, a sliding block disposed on the surface of the sliding rod and being slidably connected to the sliding rod, a support plate disposed on the side of the sliding block and being fixedly connected to the support plate, a telescopic rod disposed at the output end of the hydraulic cylinder and being fixedly connected to the bottom of the support plate, and a fixed seat disposed on the upper part of the support plate and having a placement groove disposed inside the fixed seat.

[0006] In a preferred embodiment of this utility model, a fixing bolt is provided between the mounting plate and the fixing plate, and the mounting plate is fixedly connected to the fixing plate through the fixing bolt.

[0007] In a preferred embodiment of this utility model, the fixing plate has several sets of fixing holes inside, and the fixing plate is fixed to the connection of the tractor connecting seat by bolts passing through the fixing holes.

[0008] In a preferred embodiment of the present invention, the upper part of the support frame is provided with a fixedly connected auxiliary frame, and the auxiliary frame is inclined, with the upper end of the auxiliary frame forming a flared opening.

[0009] In a preferred embodiment of this utility model, the interior of the placement groove is provided with a protective pad with a semi-circular structure.

[0010] In a preferred embodiment of this utility model, the surface of the sliding rod is provided with a spring post and the upper part of the spring post is provided with a movable plate, and the movable plate is in contact with the bottom of the sliding block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention features a mounting plate inside a fixed plate, and a hydraulic cylinder inside the mounting plate. The hydraulic cylinder is fixedly connected to the mounting plate. A support frame is located on the upper part of the fixed plate and is fixedly connected to the fixed plate. A sliding groove is located inside the support frame, and a sliding rod is located inside the sliding groove. A sliding block is located on the surface of the sliding rod and is slidably connected to the sliding rod. A support plate is located on the side of the sliding block and is fixedly connected to the sliding block. A telescopic rod is located at the output end of the hydraulic cylinder and is fixedly connected to the bottom of the support plate. A fixed seat is located on the upper part of the support plate, and a placement groove is located inside the fixed seat. When the tractor connecting seat is connected to the traction hook, the connecting rod of the traction hook is placed in the placement groove. The hydraulic cylinder is activated, causing the telescopic rod to extend and retract up and down. This causes the fixed seat to move up and down, making the connecting rod of the traction hook level with the tractor connecting seat, facilitating quick positioning and connection, and improving connection efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a front view structural diagram of the present invention;

[0015] Figure 3 This is a side view of the structure of this utility model;

[0016] Figure 4 This is a top view of the structure of this utility model.

[0017] In the diagram: 1. Fixed plate; 2. Mounting plate; 3. Hydraulic cylinder; 4. Support frame; 5. Auxiliary frame; 6. Connector; 7. Telescopic rod; 8. Support plate; 9. Sliding block; 10. Fixed seat; 11. Placement groove; 12. Protective pad; 13. Sliding groove; 14. Sliding rod; 15. Spring column; 16. Movable plate; 17. Fixing hole; 18. Fixing bolt. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4This utility model provides a technical solution: a quick positioning device for a tractor connecting seat, comprising: a fixed plate 1, an mounting plate 2 disposed inside the fixed plate 1, and a hydraulic cylinder 3 disposed inside the mounting plate 2, the hydraulic cylinder 3 being fixedly connected to the mounting plate 2, and a connector 6 disposed on the side of the hydraulic cylinder 3; a support frame 4 disposed on the upper part of the fixed plate 1, and the support frame 4 being fixedly connected to the fixed plate 1; a sliding groove 13 disposed inside the support frame 4, and a sliding rod 14 disposed inside the sliding groove 13; a sliding block 9 disposed on the surface of the sliding rod 14, and the sliding block 9 being slidably connected to the sliding rod 14; a support plate 8 disposed on the side of the sliding block 9, and the support plate 8 being fixedly connected to the sliding block 9; a telescopic rod 7 disposed at the output end of the hydraulic cylinder 3, and the telescopic rod 7 being fixedly connected to the bottom of the support plate 8; a fixed seat 10 disposed on the upper part of the support plate 8, and a placement groove 11 disposed inside the fixed seat 10; and a mounting plate 2 disposed inside the fixed plate 1, and a placement groove 11 disposed inside the mounting plate 2. A hydraulic cylinder 3 is provided, which is fixedly connected to the mounting plate 2. A support frame 4 is provided on the upper part of the fixed plate 1 and is fixedly connected to the fixed plate 1. A sliding groove 13 is provided inside the support frame 4, and a sliding rod 14 is provided inside the sliding groove 13. A sliding block 9 is provided on the surface of the sliding rod 14 and is slidably connected to the sliding rod 14. A support plate 8 is provided on the side of the sliding block 9 and is fixedly connected to the sliding block 9. A telescopic rod 7 is provided at the output end of the hydraulic cylinder 3 and is fixedly connected to the bottom of the support plate 8. A fixed seat 10 is provided on the upper part of the support plate 8 and a placement groove 11 is provided inside the fixed seat 10. When the tractor connecting seat is connected to the traction hook, the connecting rod of the traction hook is placed in the placement groove 11. The hydraulic cylinder 3 is activated to drive the telescopic rod 7 to extend and retract up and down, thereby causing the fixed seat 10 to drive the connecting rod of the traction hook to move up and down, so that it is flush with the height of the tractor connecting seat, which facilitates quick positioning and connection and improves connection efficiency.

[0020] Further improvements, such as Figure 4 As shown: A fixing bolt 18 is provided between the mounting plate 2 and the fixing plate 1, and the mounting plate 2 is fixedly connected to the fixing plate 1 through the fixing bolt 18. The fixing bolt 18 tightly connects the mounting plate 2 and the fixing plate 1, ensuring the stability of the hydraulic cylinder 3 on the mounting plate 2 and preventing the hydraulic cylinder 3 from loosening or shifting due to vibration or external force during use, thereby improving the stability and reliability of the entire positioning device.

[0021] Further improvements, such as Figure 4As shown: The fixing plate 1 has several sets of fixing holes 17 inside, and the fixing plate 1 is fixed to the connection of the tractor connecting seat by bolts passing through the fixing holes 17. The design of the fixing holes 17 makes it easy to fix the fixing plate 1 to the connection of the tractor connecting seat by bolts, which enhances the connection strength between the positioning device and the tractor. At the same time, it is also easy to adjust the position of the positioning device according to actual needs, which improves the flexibility and adaptability of installation.

[0022] Further improvements, such as Figure 1 As shown: The upper part of the support frame 4 is provided with a fixedly connected auxiliary frame 5, and the auxiliary frame 5 is set at an inclination. The upper end of the auxiliary frame 5 forms a flared opening. The inclination design of the auxiliary frame 5 not only enhances the structural strength of the support frame 4, but also plays a guiding role when the traction hook docks with the connecting seat, making it easier for the traction hook to enter the connecting seat, reducing friction and resistance during the docking process, and improving the connection efficiency.

[0023] Further improvements, such as Figure 2 As shown: The placement groove 11 is provided with a protective pad 12 with a semi-circular structure. The design of the protective pad 12 can effectively protect the connecting rod of the traction hook from damage in the placement groove 11. At the same time, the semi-circular structure can better fit the shape of the connecting rod, reducing shaking and noise.

[0024] Further improvements, such as Figure 3 As shown: The surface of the sliding rod 14 is provided with a spring post 15 and the upper part of the spring post 15 is provided with a movable plate 16. The movable plate 16 is in contact with the bottom of the sliding block 9. The design of the spring post 15 and the movable plate 16 enables the sliding block 9 to have a certain buffering and shock absorption effect on the sliding rod 14.

[0025] Working principle: The fixing plate 1 is fixed to the connection of the tractor connecting seat by bolts through the fixing holes 17, ensuring a tight connection between the positioning device and the tractor connecting seat. The mounting plate 2 is fixed to the fixing plate 1 by fixing bolts 18, ensuring the stability of the hydraulic cylinder 3 on the mounting plate 2, improving the stability and reliability of the positioning device, and providing a solid foundation for subsequent rapid positioning connection. The connecting rod of the traction hook is placed in the placement groove 11. At this time, the protective pad 12 plays a protective role to prevent damage to the connecting rod. The hydraulic cylinder 3 is started. The output end of the hydraulic cylinder 3 drives the telescopic rod 7 to extend and retract up and down, thereby causing the fixing seat 10 to move the connecting rod of the traction hook up and down. Through the precise control of the hydraulic cylinder 3, the height between the traction hook and the connecting seat is quickly adjusted to make them level. This design facilitates rapid positioning and connection. After the traction hook and connecting seat are aligned at the same height, the traction hook is accurately aligned with the connecting seat. After docking, the hydraulic cylinder 3 maintains stable pressure to ensure a firm and reliable connection between the traction hook and the connecting seat. The design of the rapid positioning device greatly improves the connection efficiency between the tractor and the carriage, reduces connection difficulties caused by inconsistent heights, and ensures the stability and safety of the connection. Through the precise control of the hydraulic cylinder 3, the height between the traction hook and the connecting seat can be quickly adjusted, improving connection efficiency. The protective pad 12 and auxiliary frame 5 protect the traction hook and connecting seat from damage and extend the service life of the positioning device. The entire device has a compact structure, is easy to operate, and has strong practicality and promotional value.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick positioning device for a tractor connecting seat, characterized in that: include: A fixed plate (1) is provided inside the fixed plate (1), and a mounting plate (2) is provided inside the mounting plate (2). A hydraulic cylinder (3) is provided inside the mounting plate (2). The hydraulic cylinder (3) is fixedly connected to the mounting plate (2), and a connector (6) is provided on the side of the hydraulic cylinder (3). A support frame (4) is provided on the upper part of the fixed plate (1), and the support frame (4) is fixedly connected to the fixed plate (1). A sliding groove (13) is provided inside the support frame (4), and a sliding rod (14) is provided inside the sliding groove (13). The sliding rod (14) has a sliding block (9) on its surface and the sliding block (9) is slidably connected to the sliding rod (14). The side of the sliding block (9) is provided with a support plate (8) and the support plate (8) is fixedly connected to the sliding block (9). The output end of the hydraulic cylinder (3) is provided with a telescopic rod (7) and the telescopic rod (7) is fixedly connected to the bottom of the support plate (8). The upper part of the support plate (8) is provided with a fixed seat (10) and the interior of the fixed seat (10) is provided with a placement groove (11).

2. The quick positioning device for a tractor connecting seat according to claim 1, characterized in that: A fixing bolt (18) is provided between the mounting plate (2) and the fixing plate (1), and the mounting plate (2) is fixedly connected to the fixing plate (1) through the fixing bolt (18).

3. The quick positioning device for a tractor connecting seat according to claim 1, characterized in that: The fixing plate (1) has several sets of fixing holes (17) inside, and the fixing plate (1) is fixed to the connection of the tractor connecting seat by bolts passing through the fixing holes (17).

4. The quick positioning device for a tractor connecting seat according to claim 1, characterized in that: The upper part of the support frame (4) is provided with a fixedly connected auxiliary frame (5), and the auxiliary frame (5) is inclined. The upper end of the auxiliary frame (5) forms a flared opening.

5. A quick positioning device for a tractor connecting seat according to claim 1, characterized in that: The placement slot (11) is provided with a protective pad (12) in a semi-circular structure.

6. The quick positioning device for a tractor connecting seat according to claim 1, characterized in that: The surface of the sliding rod (14) is provided with a spring column (15) and the upper part of the spring column (15) is provided with a movable plate (16), and the movable plate (16) is in contact with the bottom of the sliding block (9).