Heavy truck tractor fastening device

Abstract

The utility model provides a heavy truck tractor fastening device which comprises a bottom plate and a butt joint plate, a positioning plate is arranged at the upper end of the right side of the bottom plate, a positioning rod is connected to the right end of the bottom side of the positioning plate, a correcting plate is arranged below the positioning plate, the left end of the correcting plate is connected to the bottom plate, and a connecting block is connected to the left end of the butt joint plate and connected with a connecting plate through a connecting rod. The left end of the connecting plate is connected with a lantern ring. According to the heavy truck tractor fastening device, by arranging the limiting ball, the annular groove, the limiting plate, the positioning plate and other structures, the functions of avoiding failure of the automatic correction function and automatically completing installation of the positioning plate are achieved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling technology for tractor vehicles, and more specifically, to a fastening device for heavy-duty truck tractors. Background Technology

[0002] When a tractor unit tows a full trailer, the tractor unit typically uses a collar to engage with the trailer at the docking point. Bolts are then passed through the collar and directly installed at the docking point, providing a locking mechanism for the collar. However, during heavy-duty tractor unit operation, the constant bumps and jolting can cause the bolts and nuts to loosen, making them more prone to falling off on bumpy roads. Furthermore, because the collar is in the driver's blind spot, the driver must rely solely on their sense of touch to ensure the collar engages properly. If the tractor unit deviates from its trajectory during docking, the collar may not engage successfully on the first attempt. Therefore, when towing a full trailer, another person is usually needed to guide the driver during docking.

[0003] To address the aforementioned issues, particularly the tendency of existing heavy-duty truck tractor bolts and nuts to loosen and fall off, and the difficulty in successfully engaging the collar in one go, extensive research revealed a heavy-duty truck tractor fastening device with patent number CN220009368U. This device includes a base plate and a docking base plate. A support platform is welded to the top of the base plate, and connecting discs are welded to both sides of the support platform. A positioning plate is engaged with the inner side of the connecting discs, and a positioning screw is fixedly connected to the bottom of the positioning plate. A rotating shaft is rotatably sleeved within the docking base plate. This heavy-duty truck tractor fastening device… The collar gradually moves towards the side limiting plate. Once the collar engages with the inner side of the side limiting plate, the side limiting plate restricts the movement of the shaft and the collar, causing the collar to automatically correct itself and abut against the inner side of the side limiting plate. Once the side limiting plate and the collar are fully abutted, the side limiting plate and the collar are fixed in place. This improves the accuracy of docking between the heavy-duty truck tractor and the trailer, and increases the tolerance for error, allowing for docking and fixing even if there is a misalignment between the side limiting plate and the collar. However, the technical solution provided by this patent has the following problems:

[0004] (1) The shaft is not perpendicular to the docking base plate most of the time during connection. When the shaft rotates to one side at too large an angle, it will affect the automatic correction function during docking. In particular, when the ring is outside the side limit plate, the automatic correction function will be completely ineffective.

[0005] (2) After the collar and the side limit plate are connected, the driver needs to get out of the vehicle to install the positioning plate, which is a time-consuming process.

[0006] This invention can prevent the automatic correction function from failing and automatically install the positioning plate. Utility Model Content

[0007] The present invention aims to solve the technical problems mentioned in the background section by providing a fastening device for heavy-duty truck tractors. This device can prevent the automatic correction function from failing and automatically install the positioning plate.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a fastening device for a heavy-duty truck tractor, comprising: a base plate and a docking plate, a positioning plate arranged on the upper right side of the base plate, a positioning rod connected to the lower right side of the positioning plate, a correction plate arranged below the positioning plate, the left end of the correction plate connected to the base plate, a connecting block connected to the left end of the docking plate, the connecting block being connected to a connecting plate via a connecting rod, and a collar connected to the left end of the connecting plate.

[0009] A further preferred embodiment: a groove is provided in the center of the right side of the base plate, the groove has a "T" shaped cross section, and a "T" shaped slider is connected to the left end of the positioning plate, the groove on the right side of the base plate and the slider at the left end of the positioning plate are engaged.

[0010] A further preferred embodiment: A square groove is provided at the center of the top of the correction plate, and a square hole is provided through the center of the right end of the square groove of the correction plate. A movable plate is arranged in the square hole of the correction plate. A first spring is connected to the left end of the movable plate. The left end of the first spring is connected to the left side of the square groove of the correction plate. A limit plate is connected to the left end of the top side of the movable plate. The top end of the limit plate is connected to the positioning plate. An arc surface that fits the collar is provided on the right side of the movable plate.

[0011] A further preferred embodiment: a square through hole is provided at the left end of the positioning plate.

[0012] A further preferred embodiment: a limiting hole is formed in the center of the limiting plate, a second spring is connected inside the limiting hole, and a limiting block is connected to the front end of the second spring.

[0013] A further preferred embodiment: the front surface of the limiting block is an arc surface.

[0014] A further preferred embodiment: A circular hole is provided through the connecting block, and a connecting rod is arranged in the circular hole. A limiting ball is connected to the lower right end of the connecting rod. The right end of the limiting ball is hemispherical. An annular groove is provided obliquely through the circular hole of the connecting block. The left end of the annular groove is higher than the right end, and the annular groove fits with the right end of the limiting ball.

[0015] Beneficial effects:

[0016] 1. By using the combination of the limiting ball and the annular groove, the automatic correction function is prevented from failing. When the connecting plate is disturbed by external force, it will drive the connecting rod to rotate together, thereby driving the limiting ball to rotate along the annular groove. After the external force disappears, because the left end of the annular groove is higher than the right end, under the action of gravity, the limiting ball will slide along the annular groove to the bottom of the annular groove, thereby driving the connecting rod and the connecting plate to rotate together, so that the connecting plate and the mating plate return to a perpendicular state.

[0017] 2. A square through hole is provided in the center of the limiting plate and the positioning plate. When the limiting plate moves to the center of the square through hole of the positioning plate, the positioning plate falls down along the limiting plate. The positioning plate drives the positioning rod to fall down and place the positioning rod into the collar, thereby automatically completing the installation process of the positioning plate.

[0018] 3. In summary, this type of heavy-duty truck tractor fastening device, by setting up structures such as limit balls, annular grooves, limit plates and positioning plates, achieves the function of avoiding the failure of automatic correction and automatically completing the installation of the positioning plate. Attached Figure Description

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

[0020] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0021] Figure 3 This is a cross-sectional view of the limiting plate and limiting block of this utility model.

[0022] Figure 4 This is a cross-sectional view of the correction plate and the movable plate of this utility model.

[0023] Figure 5 This is a cross-sectional structural diagram of the connecting rod, the limiting ball, and the connecting rod of this utility model.

[0024] Figure 6 This is a three-dimensional sectional view of the connecting block of this utility model.

[0025] Figure 1-6 In the middle: 1. Base plate; 2. Correction plate; 3. Moving plate; 4. Collar ring; 5. Connecting block; 6. Butt plate; 7. Connecting rod; 701. Limiting ball; 702. Annular groove; 8. Connecting plate; 9. Positioning rod; 10. Positioning plate; 11. Limiting plate; 12. First spring; 13. Limiting block; 14. Second spring. Detailed Implementation

[0026] The following will refer to the appendix in the embodiments of this utility model. Figures 1-6 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0027] Please see Figure 1-6 In this embodiment of the utility model, a heavy-duty truck tractor fastening device includes: a base plate 1 and a docking plate 6. The base plate 1 is the foundation of the entire device, bearing the weight of other components and traction force. A positioning plate 10 is located at the upper right side of the base plate 1. A positioning rod 9 is connected to the right side of the lower surface of the positioning plate 10 and cooperates with a collar 4 to transmit traction force. A correction plate 2 is located below the positioning plate 10, with its left end connected to the base plate 1 and a collar 4 arranged at its right end. The collar 4 is located at the right end of the correction plate 2. A connecting plate 8 is connected to the right end of the collar 4, serving as a transition. A connecting block 5 is connected to the right end of the connecting plate 8, bearing traction force and maintaining a stable connection. The docking plate 6 is connected to the right end of the connecting block 5, serving as a connection port with the tractor. Through the combined arrangement of the above components, this tractor fastening device can realize the connection between the tractor and the towed object and the function of transmitting traction force.

[0028] In this embodiment of the utility model, a groove is provided in the center of the right side of the base plate 1. The groove has a "T" shaped cross section. A "T" shaped slider is connected to the left end of the positioning plate 10. The groove on the right side of the base plate 1 and the slider at the left end of the positioning plate 10 fit together, so that the positioning plate 10 can only move up and down.

[0029] In this embodiment of the utility model, a square groove is provided at the center of the top of the correction plate 2, and a square hole is provided through the center of the right end of the square groove of the correction plate 2. A movable plate 3 is arranged in the square hole of the correction plate 2. A first spring 12 is connected to the left end of the movable plate 3, and the left end of the first spring 12 is connected to the left side of the square groove of the correction plate 2. A limiting plate 11 is connected to the left end of the top side of the movable plate 3, and the top of the limiting plate 11 is connected to the positioning plate 10. An arc surface that fits the collar 4 is provided on the right side of the movable plate 3, so that the collar 4 and the movable plate 3 are evenly stressed when they come into contact. The movable plate 3 can drive the limiting plate 11 to move left and right. When the collar 4 is connected to the correction plate 2, the movable plate 3 will be pushed to move to the left during the process of the collar 4 moving to the left. The movable plate 3 will drive the limiting plate 11 to move to the left. When the limiting plate 11 moves to a certain distance, the positioning plate 10 will fall down automatically. The positioning plate 10 will drive the positioning rod 9 to fall down, so that the positioning rod 9 falls in the center of the collar 4, thereby automatically completing the installation process of the positioning plate 10.

[0030] In this embodiment of the utility model, a square through hole is provided through the left end of the positioning plate 10. The square through hole of the positioning plate 10 fits with the limiting plate 11. Through the square through hole on the positioning plate 10, the positioning plate 10 falls down along the limiting plate 11 when the limiting plate 11 moves directly below the square through hole of the positioning plate 10.

[0031] In this embodiment of the utility model, a limiting hole is provided in the center of the limiting plate 11, and a second spring 14 is connected in the limiting hole. The front end of the second spring 14 is connected to a limiting block 13. Through the limiting block 13, the upward displacement of the positioning plate 10 is restricted after it falls.

[0032] In this embodiment of the utility model, the right end of the front surface of the limiting block 13 is an arc surface. Through the arc surface of the limiting block 13, the positioning plate 10 is moved downward with less resistance.

[0033] In this embodiment of the utility model, a circular hole is provided through the connecting block 5, and a connecting rod 7 is arranged in the circular hole. The lower right end of the connecting rod 7 is connected to a limiting ball 701. The right end of the limiting ball 701 is hemispherical. An annular groove 702 is obliquely provided through the circular hole of the connecting block 5. The left end of the annular groove 702 is higher than the right end. The annular groove 702 fits with the right end of the limiting ball 701. Through the cooperation of the annular groove 702 and the limiting ball 701, the connecting plate 8 is automatically restored to a perpendicular state to the docking plate 6. The limiting ball 701 is normally in a perpendicular state. 1. Located at the bottom of the annular groove 702, the connecting plate 8 is perpendicular to the mating plate 6. When the connecting plate 8 is disturbed by external force, it will drive the connecting rod 7 to rotate together, thereby driving the limiting ball 701 to rotate along the annular groove 702. After the external force disappears, because the left end of the annular groove 702 is higher than the right end, under the action of gravity, the limiting ball 701 will slide along the annular groove 702 to the bottom of the annular groove 702, thereby driving the connecting rod 7 and the connecting plate 8 to rotate together, so that the connecting plate 8 and the mating plate 6 return to a perpendicular state, avoiding the failure of the automatic correction function.

[0034] Working principle: First, the base plate 1 is bolted to the rear of the tractor unit, and the docking plate 6 is bolted to the front of the trailer. Normally, the limiting ball 701 is located at the bottom of the annular groove 702, and the connecting plate 8 is perpendicular to the docking plate 6. When the connecting plate 8 is subjected to external force, it will cause the connecting rod 7 to rotate, thereby causing the limiting ball 701 to rotate along the annular groove 702. After the external force disappears, because the left end of the annular groove 702 is higher than the right end, under the action of gravity, the limiting ball 701 will slide along the annular groove 702 to the bottom of the annular groove 702, thereby causing the connecting rod 7 and the connecting plate 8 to rotate together, restoring the connecting plate 8 to the perpendicular state of the docking plate 6, thus avoiding the need for automatic correction. Failure; When docking the tractor, first start the tractor and move it to the left, causing the collar 4 to move to the left. During the movement of the collar 4 to the left, it will push the moving plate 3 to the left. The moving plate 3 will drive the limiting plate 11 to move to the left. When the limiting plate 11 moves to the right below the square through hole of the positioning plate 10, the positioning plate 10 will fall along the limiting plate 11. The positioning plate 10 will drive the positioning rod 9 to fall, so that the positioning rod 9 falls into the collar 4, thereby automatically completing the installation process of the positioning plate 10. After the positioning plate 10 falls, the limiting block 13 will restrict its upward displacement. Because the right end of the upper surface of the limiting block 13 is an arc surface, the positioning plate 10 will encounter less resistance when moving downward through the limiting block 13.

Claims

1. A fastening device for a heavy-duty truck tractor, comprising: The base plate (1) and the docking plate (6) are characterized in that: a positioning plate (10) is arranged on the upper right side of the base plate (1), a positioning rod (9) is connected to the right bottom side of the positioning plate (10), a correction plate (2) is arranged below the positioning plate (10), the left end of the correction plate (2) is connected to the base plate (1), a connecting block (5) is connected to the left end of the docking plate (6), the connecting block (5) is connected to the connecting plate (8) through the connecting rod (7), and a collar (4) is connected to the left end of the connecting plate (8).

2. The fastening device for a heavy-duty truck tractor according to claim 1, characterized in that: A groove is provided in the center of the right side of the base plate (1). The groove has a "T" shaped cross section. A "T" shaped slider is connected to the left end of the positioning plate (10). The groove on the right side of the base plate (1) matches the slider at the left end of the positioning plate (10).

3. The fastening device for a heavy-duty truck tractor as described in claim 1, characterized in that: The top center of the correction plate (2) has a square groove, and the right center of the square groove of the correction plate (2) has a square hole that passes through the correction plate (2). A movable plate (3) is arranged in the square hole of the correction plate (2). The left end of the movable plate (3) is connected to a first spring (12), and the left end of the first spring (12) is connected to the left side of the square groove of the correction plate (2). The top left end of the movable plate (3) is connected to a limiting plate (11), and the top of the limiting plate (11) is connected to a positioning plate (10). The right side of the movable plate (3) has an arc surface that matches the collar (4).

4. A fastening device for a heavy-duty truck tractor as described in claim 2, characterized in that: The positioning plate (10) has a square through hole at its left end.

5. A fastening device for a heavy-duty truck tractor as described in claim 3, characterized in that: The limiting plate (11) has a limiting hole in the center, and a second spring (14) is connected in the limiting hole. The front end of the second spring (14) is connected to a limiting block (13).

6. A fastening device for a heavy-duty truck tractor as described in claim 5, characterized in that: The front surface of the limiting block (13) is an arc surface.

7. A fastening device for a heavy-duty truck tractor as described in claim 1, characterized in that: A circular hole is provided through the connecting block (5), and a connecting rod (7) is arranged in the circular hole. The lower right end of the connecting rod (7) is connected to a limiting ball (701). The right end of the limiting ball (701) is hemispherical. An annular groove (702) is obliquely provided through the circular hole of the connecting block (5). The left end of the annular groove (702) is higher than the right end, and the annular groove (702) fits with the right end of the limiting ball (701).

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