Semitrailer traction device

Abstract

The utility model discloses a semitrailer traction device which comprises a base, two compressed springs, two fixing seats and a protruding block, a first fixing plate is connected to one sides of the two fixing seats, two connecting plates relatively slide on the first fixing plate, inserting holes are formed in the two connecting plates, the protruding block is fixed in the two inserting holes in an inserting mode, and the first fixing plate and the second fixing plate are fixedly connected with the protruding block in an inserting mode. An adjusting rod is connected to the first fixing plate and used for adjusting the two connecting plates to move. The quick connecting device has the advantages that when the quick connecting device is used, the base is fixed on a vehicle frame, the convex block is connected to a vehicle head, the convex block is placed between the two connecting plates during connection, and then the two connecting plates move towards the middle through the adjusting rod, so that the convex block is sleeved and fixed, and quick connection between the vehicle head and the vehicle frame is realized; and during dismounting, the two connecting plates are moved outwards through the adjusting rods, so that the convex blocks are separated from the inserting holes, and rapid separation between the vehicle head and the vehicle frame can be completed.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer technology, and in particular to a semi-trailer traction device. Background Technology

[0002] Traditional towing devices, being positioned between the trailer and the tractor, experience significant stress during vehicle startup and braking, increasing the risk of damage. Furthermore, traditional towing devices are difficult to disassemble, making it inconvenient to switch trailers from the tractor to the trailer, thus reducing the device's convenience and practicality.

[0003] An existing application (CN202322452790.4) discloses a flatbed semi-trailer frame, comprising a frame and a cab. The frame has a base, and a compression spring is fixedly connected to the base. A fixing seat is fixedly connected to the end of the compression spring away from the base. A connecting rod is fixedly connected to one end of the fixing seat, and a fixing seat two is fixedly connected to one end of the connecting rod. A compression spring two is fixedly connected to the fixing seat two, and one end of the compression spring two is fixedly connected to the base. The base also has the connecting seat one fixedly connected to it, and a transmission mechanism is hinged to the connecting seat one. Part 1: One end of transmission component 1 is slidably connected to a connecting rod. A connecting seat 2 is fixedly connected to the base. Transmission component 2 is hinged to the connecting seat 2. One end of transmission component 2 is slidably connected to the connecting rod. A compression spring 3 is sleeved on the connecting rod. One end of the compression spring 3 is fixedly connected to transmission component 1, and the other end of the compression spring 3 is fixedly connected to transmission component 2. Connecting component 1 is fixedly connected to the fixed seat 1, and connecting component 2 is fixedly connected to the fixed seat 2. A fixing plate is fixedly connected to connecting component 1, and one end of the fixing plate is fixedly connected to connecting component 2. Although this utility model uses the upper and lower connecting plates on the frame to hinge with the protrusion at the front of the vehicle, the hinge connection between the connecting plate and the protrusion is still relatively complicated. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a semi-trailer traction device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A semi-trailer traction device includes a base, two compression springs, two fixed seats, and a protrusion. A first fixed plate is connected to one side of the two fixed seats. Two connecting plates slide relative to each other on the first fixed plate. Each connecting plate is provided with a insertion hole, and the protrusion is inserted and fixed into the two insertion holes. An adjusting rod is connected to the first fixed plate for adjusting the movement of the two connecting plates.

[0007] Preferably, the protrusion is a plug-in post, with its upper and lower ends respectively inserted into the two plug-in holes. A second fixing plate is connected to the plug-in post, and the second fixing plate is connected to the front of the vehicle.

[0008] Preferably, a guide groove is provided on the side of the first fixing plate, and two guide blocks move relative to each other in the guide groove, with a corresponding connecting plate connected to one side of each guide block.

[0009] Preferably, the adjusting rod is a bidirectional screw, which is rotatably connected in the guide groove. Each guide block is provided with a threaded hole, and the bidirectional screw is threadedly connected in the threaded hole.

[0010] Preferably, a through hole is provided on one side of the guide groove, the bidirectional screw passes through the through hole, and a rotating plate is connected to one end of the bidirectional screw.

[0011] The advantages of this utility model are as follows: When using the semi-trailer traction device provided by this utility model, the base is fixed on the frame and the protrusion is connected to the truck head. When connecting, the protrusion is placed between two connecting plates, and then the two connecting plates are moved towards the middle by the adjusting rod, thereby fitting and fixing the protrusion, realizing a quick connection between the truck head and the frame. When disassembling, the two connecting plates are moved outward by the adjusting rod, so that the protrusion is disengaged from the insertion hole, thus completing the quick disassembly between the truck head and the frame. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the principle structure of a semi-trailer traction device provided by this utility model;

[0013] Figure 2 This is a structural schematic diagram of the first fixed plate. Detailed Implementation

[0014] 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.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0016] like Figure 1 As shown, the present invention provides a semi-trailer traction device, including a base 1, two compression springs 2, two fixing seats 3 and a protrusion 8. The base 1 is connected to the frame and the protrusion 8 is connected to the cab.

[0017] In this embodiment, the protrusion 8 is a plug-in post, and the upper and lower ends of the plug-in post are respectively inserted into the two plug-in holes mentioned below. The second fixing plate 8.1 is connected to the plug-in post, and the second fixing plate 8.1 is connected to the front of the vehicle.

[0018] The first fixing plate 4 is connected to one side of the two fixing seats 3, as follows: Figure 2 As shown, a guide groove 4.1 is provided on the side of the first fixed plate 4. Two guide blocks 4.2 move relative to each other in the guide groove 4.1. A connecting plate 5 is connected to one side of each guide block 4.2. An insertion hole is provided on each connecting plate 5. A protrusion 8 is inserted into the insertion hole.

[0019] An adjusting rod 7 is connected to the first fixed plate 4. The adjusting rod 7 is used to adjust the movement of the two connecting plates 5. In this embodiment, the adjusting rod 7 is a bidirectional screw. A bearing seat is connected to the bottom of the guide groove 4.1. The bidirectional screw is inserted into the bearing seat. The bidirectional screw is rotatably connected in the guide groove 4.1. Each guide block 4.2 is provided with a threaded hole. The bidirectional screw is threaded into the threaded hole. The rotation of the bidirectional screw drives the two connecting plates 5 to move relative to each other.

[0020] A through hole is provided on one side of the guide groove 4.1, through which the bidirectional screw passes. A rotating plate 4.3 is connected to one end of the bidirectional screw, which allows the user to rotate the bidirectional screw.

[0021] When using this traction device, the protrusion 8 is first positioned between the two connecting plates 5, with the insertion post and insertion hole coaxially arranged. Then, the rotating plate 4.3 drives the bidirectional screw to rotate, thereby moving the two connecting plates 5 towards the center, so that the two insertion holes are fitted onto the outside of the insertion post. When the tractor unit separates from the frame, the rotating plate 4.3 is rotated in the opposite direction, causing the two connecting plates 5 to move outward, so that the insertion holes disengage from the insertion post, thereby separating the frame from the tractor unit. Therefore, this traction device can achieve rapid connection and separation of the tractor unit and the frame.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A semi-trailer towing device, comprising a base (1), two compression springs (2), two fixing seats (3), and a protrusion (8), characterized in that: A first fixing plate (4) is connected to one side of the two fixing seats (3). Two connecting plates (5) slide relative to each other on the first fixing plate (4). Insertion holes are provided on both connecting plates (5). The protrusions (8) are inserted and fixed in the two insertion holes. An adjusting rod (7) is connected to the first fixing plate (4). The adjusting rod (7) is used to adjust the movement of the two connecting plates (5).

2. A semi-trailer traction device according to claim 1, characterized in that: The protrusion (8) is a plug-in post, and the upper and lower ends of the plug-in post are respectively inserted into the two plug-in holes. A second fixing plate (8.1) is connected to the plug-in post, and the second fixing plate (8.1) is connected to the front of the vehicle.

3. A semi-trailer traction device according to claim 2, characterized in that: A guide groove (4.1) is provided on the side of the first fixing plate (4), and two guide blocks (4.2) move relative to each other in the guide groove (4.1), and the corresponding connecting plate (5) is connected to one side of each guide block (4.2).

4. A semi-trailer traction device according to claim 3, characterized in that: The adjusting rod (7) is a bidirectional screw, which is rotatably connected in the guide groove (4.1). Each guide block (4.2) is provided with a threaded hole, and the bidirectional screw is threadedly connected in the threaded hole.

5. A semi-trailer traction device according to claim 4, characterized in that: A through hole is provided on one side of the guide groove (4.1), through which the bidirectional screw passes, and a rotating plate (4.3) is connected to one end of the bidirectional screw.

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