A heavy truck tractor fastening device

Abstract

The utility model discloses a heavy truck tractor fastening device belongs to heavy truck tractor fastening device field. A kind of heavy truck tractor fastening device of the utility model, including slide rail, the slide rail is provided with sliding block, the both sides of the sliding block are provided with sawtooth, the one end of the slide rail is provided with fixed base, further including rotating electrical machine, the rotating electrical machine is set on fixed base, transmission shaft is set on the rotating electrical machine output end, the transmission shaft is provided with gear on the one end away from rotating electrical machine. The utility model solves the problem that when the positioning screw on the existing fastening device is connected to the ring, there is a large gap between the ring and the positioning screw, when the fastening device is connected to the car head and the car hopper, if the car head stops, the rear car hopper will continue to move forward due to inertia, causing the positioning screw to hit the ring, which may cause the ring to break.

Description

Technical Field

[0001] This utility model relates to the field of fastening devices for heavy-duty truck tractors, specifically a fastening device for heavy-duty truck tractors. Background Technology

[0002] A tractor unit is a large truck or semi-trailer whose cab and cargo box are towed by a tool. In other words, the cab can detach from its original cargo box and tow other cargo boxes, and the cargo box can also detach from its original cab and be towed by other cabs. The cab with driving capability at the front is called a tractor unit. Chinese patent CN220009368U discloses a fastening device for a heavy-duty truck tractor, including 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 on the inner side of the docking base plate. In this fastening device, a collar gradually moves towards a side limiting plate. When the collar engages with the inner side of the side limiting plate, the side limiting plate limits the rotating 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, increases the fault tolerance, and allows for docking and fixing even if there is a misalignment between the side limiting plate and the collar.

[0003] When the positioning screw on the fastening device of the aforementioned patent makes a limiting connection to the collar, there is a large gap between the collar and the positioning screw. When the fastening device connects the cab and the truck bed, if the cab stops, the truck bed at the rear will continue to move forward due to inertia, causing the positioning screw to hit the collar, which may cause the collar to break. Utility Model Content

[0004] The purpose of this utility model is to provide a fastening device for a heavy-duty truck tractor. It features connecting plates at both ends of a positioning screw, a slider at the rear end of each connecting plate, and slide rails on both sides of the slider. The slider has serrations on both sides and a second bolt hole. The slide rails have first bolt holes at corresponding positions. A fixed base is located at the rear end of the slide rails, and a rotary motor is mounted on the fixed base. A drive shaft is mounted on the output end of the rotary motor, and a gear is mounted on the end of the drive shaft furthest from the rotary motor. The gear engages with the serrations on both sides of the slider. After the fastening device connects the truck head to the truck bed, the rotary motor drives the gear to rotate, causing the slider to move forward or backward, reducing the distance between the positioning screw and the collar. When the gap between them is sufficiently small, bolts are inserted into the first and second bolt holes to fix the slider and the slide rails together, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fastening device for a heavy-duty truck tractor, including a slide rail, a slider disposed inside the slide rail, serrations on both sides of the slider, a fixed base disposed at one end of the slide rail, and a rotary motor disposed on the fixed base. A drive shaft is disposed on the output end of the rotary motor, a gear is disposed on the end of the drive shaft away from the rotary motor, a connecting plate is disposed at one end of the slider, and a positioning screw is disposed on the connecting plate.

[0006] Preferably, a collar is fitted onto the positioning screw.

[0007] Preferably, the outer surface of the collar is provided with a front connecting plate, and the front connecting plate is welded to the collar.

[0008] Preferably, a connecting arm is provided on the outer surface of the slide rail, and the connecting arm is welded to the slide rail.

[0009] Preferably, the connecting arm has a truck bed connecting plate at the end away from the slide rail, and the truck bed connecting plate is integrally formed with the connecting arm.

[0010] Preferably, the outer surface of the slide rail is provided with a first bolt hole, and the first bolt hole is integrally formed with the slide rail.

[0011] Preferably, the slider has a second bolt hole at the position corresponding to the first bolt hole.

[0012] Preferably, the slider has arc-shaped baffles on both sides at one end near the connecting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a braking component consisting of a rotary motor, a transmission shaft, and gears at the rear end of the slide rail, combined with serrations on both sides of the slider, to allow the slider to move back and forth within the slide rail. This adjusts the gap between the positioning screw and the collar, thereby reducing the gap between the positioning screw and the collar and preventing the positioning screw from hitting the collar due to the truck bed continuing to move forward due to inertia when the truck head brakes suddenly.

[0014] 2. By setting the first bolt hole on the slide rail and the corresponding second bolt hole on the slider, after the distance between the positioning screw and the collar has been adjusted by the cooperation of the gear and the saw teeth, the bolt is inserted into the first bolt hole and the second bolt hole to fix the slider in the slide rail, further strengthening the connection between the two. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall external structure of this utility model; Figure 2This is a schematic diagram of the overall rear-end structure of this utility model; Figure 3 This is an enlarged structural diagram of point A in this utility model; Figure 4 This is a schematic diagram of the slider and slide rail structure of this utility model.

[0016] In the diagram: 1. Slide rail; 2. Slider; 3. First bolt hole; 4. Second bolt hole; 5. Sawtooth; 6. Fixed base; 7. Rotary motor; 8. Drive shaft; 9. Gear; 10. Connecting arm; 11. Cargo bed connecting plate; 12. Arc-shaped baffle; 13. Connecting plate; 14. Positioning screw; 15. Collar; 16. Car head connecting plate. Detailed Implementation

[0017] 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.

[0018] To address the problem in existing technologies where a large gap exists between the collar and the positioning screw when the fastening device limits the connection of the collar, and when the fastening device connects the cab and the truck bed, if the cab stops, the truck bed will continue to move forward due to inertia, causing the positioning screw to strike the collar and potentially breaking it, this embodiment provides the following technical solution: A fastening device for a heavy-duty truck tractor includes a slide rail 1, a slider 2 disposed within the slide rail 1, serrations 5 on both sides of the slider 2, a fixed base 6 at one end of the slide rail 1, a rotary motor 7 mounted on the fixed base 6, a drive shaft 8 at the output end of the rotary motor 7, a gear 9 at the end of the drive shaft 8 furthest from the rotary motor 7, a connecting plate 13 at one end of the slider 2, a positioning screw 14 on the connecting plate 13, a collar 15 sleeved on the positioning screw 14, and a vehicle head connection on the outer surface of the collar 15. Plate 16, the head connecting plate 16 is welded to the collar 15, the outer surface of the slide rail 1 is provided with a connecting arm 10, the connecting arm 10 is welded to the slide rail 1, the connecting arm 10 is provided with a truck bed connecting plate 11 at the end away from the slide rail 1, the truck bed connecting plate 11 and the connecting arm 10 are integrally set, the outer surface of the slide rail 1 is provided with a first bolt hole 3, the first bolt hole 3 is integrally set with the slide rail 1, the slider 2 is provided with a second bolt hole 4 at the corresponding position of the first bolt hole 3, and the slider 2 is provided with arc-shaped baffles 12 on both sides at the end near the connecting plate 13; In this embodiment, please refer to Figures 1-4Connecting plates 13 are provided at the upper and lower ends of the positioning screw 14. A slider 2 is provided at the rear end of the connecting plate 13. The slider 2 is set in the slide rails 1 on both sides. The slider 2 has serrations 5 on both sides and a second bolt hole 4 on the slider 2. The slide rail 1 has a first bolt hole 3 at the corresponding position of the second bolt hole 4. A fixed base 6 is provided at the rear end of the slide rail 1. A rotary motor 7 is provided on the fixed base 6. A drive shaft 8 is provided on the output end of the rotary motor 7. A gear 9 is provided on the end of the drive shaft 8 away from the rotary motor 7. The gear 9 cooperates with the serrations 5 on both sides of the slider 2. After the fastening device connects the truck head and the truck bed, the rotary motor 7 drives the gear 9 to rotate, which drives the slider 2 to move forward or backward. The distance between the positioning screw 14 and the collar 15 is reduced. When the gap between the two is small enough, the bolts are inserted into the first bolt hole 3 and the second bolt hole 4 to fix the slider 2 and the slide rail 4.

[0019] Working principle: A rotary motor 7 is installed on the fixed base 6. A drive shaft 8 is installed on the output end of the rotary motor 7. A gear 9 is installed on the end of the drive shaft 8 away from the rotary motor 7. The gear 9 engages with the serrations 5 on both sides of the slider 2. After the fastening device connects the cab to the truck bed, the rotary motor 7 drives the gear 9 to rotate, which in turn drives the slider 2 to move forward or backward. The distance between the positioning screw 14 and the collar 15 is reduced. When the gap between the two is small enough, the bolts are inserted into the first bolt hole 3 and the second bolt hole 4 to fix the slider 2 and the slide rail 4. In summary, by improving the connecting rod for connecting the truck bed, which was originally a single unit in the existing technology, into a slidable connecting component consisting of a slide rail and a slider, and by using a braking component consisting of a rotary motor 7, a transmission shaft 8, and a gear 9 at the rear end of the slide rail 1, along with the serrations 5 on both sides of the slider 2, the slider 2 can move back and forth within the slide rail 1, adjusting the gap between the positioning screw 14 and the collar 15. This reduces the gap between the positioning screw 14 and the collar 15, preventing the positioning screw 14 from hitting the collar 15 due to the truck bed still moving forward due to inertia when the truck head brakes suddenly.

[0020] 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 process, method, article, or apparatus.

[0021] 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 fastening device for a heavy truck tractor, comprising a slide rail (1), a slider (2) provided inside the slide rail (1), serrations (5) provided on both sides of the slider (2), and a fixed base (6) provided at one end of the slide rail (1). Its features are: It also includes a rotary motor (7), which is mounted on a fixed base (6). A transmission shaft (8) is mounted on the output end of the rotary motor (7). A gear (9) is mounted on the end of the transmission shaft (8) away from the rotary motor (7). A connecting plate (13) is mounted on one end of the slider (2). A positioning screw (14) is mounted on the connecting plate (13).

2. The fastening device for a heavy-duty truck tractor according to claim 1, characterized in that: A collar (15) is sleeved on the positioning screw (14).

3. A fastening device for a heavy-duty truck tractor as described in claim 2, characterized in that: The outer surface of the collar (15) is provided with a front connecting plate (16), and the front connecting plate (16) is welded to the collar (15).

4. A fastening device for a heavy-duty truck tractor as described in claim 1, characterized in that: The slide rail (1) has a connecting arm (10) on its outer surface, and the connecting arm (10) is welded to the slide rail (1).

5. A fastening device for a heavy-duty truck tractor as described in claim 4, characterized in that: The connecting arm (10) has a truck bed connecting plate (11) on one end away from the slide rail (1), and the truck bed connecting plate (11) and the connecting arm (10) are integrally formed.

6. A fastening device for a heavy-duty truck tractor as described in claim 5, characterized in that: The slide rail (1) has a first bolt hole (3) on its outer surface, and the first bolt hole (3) is integrally formed with the slide rail (1).

7. A fastening device for a heavy-duty truck tractor as described in claim 6, characterized in that: The slider (2) has a second bolt hole (4) at the position corresponding to the first bolt hole (3).

8. A fastening device for a heavy-duty truck tractor according to claim 7, characterized in that: The slider (2) has arc-shaped baffles (12) on both sides of one end near the connecting plate (13).

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