Semitrailer with locking device

Abstract

The utility model relates to a semitrailer with a locking device, and belongs to the technical field of semitrailers, the semitrailer comprises a semitrailer body, a tail anti-collision beam frame and an elastic buffer assembly, the tail anti-collision beam frame is slidably mounted on the semitrailer body, and the tail anti-collision beam frame is slidably mounted on the semitrailer body. The elastic buffering assembly is connected with the tail anti-collision beam frame to drive the tail anti-collision beam frame to have the trend of moving towards the tail of the semitrailer body all the time. The tail anti-collision beam frame of the semitrailer has the advantage that the buffering effect of the tail anti-collision beam frame of the semitrailer can be improved when the semitrailer is

Description

Technical Field

[0001] The present application relates to the technical field of semi-trailers, and in particular to a semi-trailer with a locking device. Background Art

[0002] A semi-trailer is a trailer with an axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. It is mainly used to transport large goods that are large in size and difficult to split. Some semi-trailers that transport containers will have multiple locking devices installed on the frame to lock the container, so that the container can be more stably placed on the semi-trailer during road transportation. In addition, the rear of the semi-trailer is generally equipped with an anti-collision beam frame. When a car rear-ends a semi-trailer, the anti-collision beam frame can block the unloading force of the rear-end car, making it difficult for the front of the rear-end car to directly drill under the semi-trailer frame to cause a larger traffic accident.

[0003] In the related art, the anti-collision beam is welded and fixed to the rear of the semi-trailer frame. However, the anti-collision beam is fixed to the frame of the semi-trailer by welding, so that a rigid connection is formed between the anti-collision beam and the semi-trailer, and thus the buffering effect on the rear car in the event of a rear-end collision is relatively small. Utility Model Content

[0004] In order to improve the buffering effect of the anti-collision beam frame at the rear of the semi-trailer when the semi-trailer is rear-ended, the present application provides a semi-trailer with a locking device.

[0005] The present application provides a semi-trailer with a locking device, which adopts the following technical solution:

[0006] A semitrailer with a locking device comprises a semitrailer body, a rear anti-collision beam frame and an elastic buffer component, wherein the rear anti-collision beam frame is slidably installed on the semitrailer body, and the elastic buffer component is connected to the rear anti-collision beam frame to drive the rear anti-collision beam frame to have a tendency to move toward the rear of the semitrailer body.

[0007] Preferably, the elastic buffer assembly includes a sliding rod, one end of which is fixedly connected to the rear anti-collision beam frame, and the side of the sliding rod away from the rear anti-collision beam frame is slidably connected to the semi-trailer body.

[0008] Preferably, a fixing plate is fixedly mounted on the rear of the semi-trailer body, and a sliding hole is provided on the fixing plate for the sliding rod to pass through on a side away from the rear anti-collision beam frame.

[0009] Preferably, the elastic buffer assembly further includes a high-strength spring, one end of the high-strength spring abuts against the fixing plate, and the other end of the high-strength spring abuts against the rear anti-collision beam frame.

[0010] Preferably, a buffer water tank is provided on one side of the fixing plate close to the rear anti-collision beam.

[0011] Preferably, a blocking plate is provided on a side of the fixed plate facing away from the buffer water tank, the blocking plate is fixedly mounted on the semi-trailer body, and a sliding gap is spaced between the blocking plate and the fixed plate for the sliding rod to move.

[0012] Preferably, a bending rod is provided at one end of the sliding rod close to the blocking plate so as to bend the sliding rod after it hits the blocking plate.

[0013] Preferably, an inclined plate is provided on the side of the blocking plate close to the ground to guide the bending of the bending rod and the sliding rod after the collision.

[0014] Preferably, reinforcing ribs are provided between the inclined plate and the blocking plate.

[0015] Preferably, a reinforcing plate is provided at the connection between the blocking plate and the semi-trailer body.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. When the rear car rear-ends the semi-trailer, the front of the rear car will first hit the rear anti-collision beam frame, and the rear anti-collision beam frame will play a good buffering role under the action of the high-strength spring to absorb a large part of the impact force;

[0018] 2. If the impact force during rear-end collision is large enough to break through the buffering force of the high-strength spring, the buffer water tank will be broken and provide a certain buffering resistance. At the same time, after the buffer water tank is broken, the water in the buffer water tank will be sprinkled on the front of the rear car to cool down and extinguish the fire to a certain extent;

[0019] 3. If the impact force is large, both the fixed plate and the blocking plate can play a role in unloading the force. In addition, after the bending rod hits the blocking plate under a large impact force, the bending rod will bend and deform downward under the action of the inclined plate, and will also guide the sliding rod to bend and deform downward, making it difficult for the sliding rod to be inserted into other parts of the semi-trailer in a horizontal direction to damage the semi-trailer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the semi-trailer in the embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the matching structure of the fixed plate, the blocking plate, the rear anti-collision beam frame and the elastic buffer component in the embodiment of the present application.

[0022] Figure 3It is a schematic diagram of the structure of the blocking plate and the inclined plate in the embodiment of the present application.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. Semi-trailer body; 11. Front of the vehicle; 12. Frame; 13. Container; 14. Fixed plate; 15. Blocking plate; 16. Inclined plate; 17. Reinforcement rib; 18. Reinforcement plate; 2. Rear anti-collision beam; 3. Elastic buffer assembly; 31. Sliding rod; 32. High-strength spring; 33. Bending rod; 34. Buffer water tank. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The present application embodiment discloses a semitrailer with a locking device. Figure 1 The semitrailer with a locking device comprises a semitrailer body 1, a rear anti-collision beam frame 2 and an elastic buffer assembly 3. The rear anti-collision beam frame 2 is slidably installed on the rear of the semitrailer body 1 through the elastic buffer assembly 3. The elastic buffer assembly 3 drives the rear anti-collision beam frame 2 to have a tendency to move toward the rear of the semitrailer body 1. When a rear car rear-ends the semitrailer body 1, it will first hit the rear anti-collision beam frame 2. The rear anti-collision beam frame 2 has a certain elastic buffering force under the action of the elastic buffer assembly 3, thereby being able to unload a part of the impact force of the rear rear-end vehicle, and forming a certain degree of protection for the rear rear-end vehicle.

[0026] Reference Figure 1 The semitrailer body 1 includes a front 11, a frame 12 and a container 13. The frame 12 is located at the rear of the front 11, and the frame 12 is moved by the front 11. The container 13 is located on the frame 12, and the container 13 moves synchronously with the frame 12. The rear anti-collision beam frame 2 is located below the frame 12 on the side away from the front 11.

[0027] Reference Figure 1 and Figure 2 A fixing plate 14 is welded and fixed to the bottom of the rear end of the frame 12 , and the fixing plate 14 is located on the side of the rear anti-collision beam 2 close to the front end 11 , and the fixing plate 14 and the rear anti-collision beam 2 are arranged at intervals, and the elastic buffer component 3 is slidably installed on the fixing plate 14 .

[0028] Reference Figure 1 and Figure 2 There are two groups of elastic buffer components 3, and the two groups of elastic buffer components 3 are arranged at intervals along the horizontal direction on the rear anti-collision beam frame 2. The two groups of elastic buffer components 3 have the same structure. The following is explained by taking one group of elastic buffer components 3 as an example.

[0029] Reference Figure 1 and Figure 2The elastic buffer assembly 3 includes a sliding rod 31, a high-strength spring 32 and a bending rod 33. The bending rod 33 is located at one end of the sliding rod 31. The sliding rod 31 and the bending rod 33 are integrally formed, that is, the bending rod 33 is a section of a rod body formed by bending the sliding rod 31. One end of the sliding rod 31 away from the bending rod 33 is welded to the rear anti-collision beam frame 2, and the high-strength spring 32 is sleeved on the sliding rod 31 to drive the rear anti-collision beam frame 2 to move in a direction away from the fixed plate 14.

[0030] The fixed plate 14 is provided with a sliding hole for the sliding rod 31 to pass through. After the end of the sliding rod 31 away from the bending rod 33 passes through the sliding hole, the high-strength spring 32 is sleeved on the sliding rod 31, and finally the sliding rod 31 is welded to the rear anti-collision beam frame 2. The high-strength spring 32 is located between the fixed plate 14 and the rear anti-collision beam frame 2, and one end of the high-strength spring 32 is pressed against the fixed plate 14, and the other end is pressed against the rear anti-collision beam frame 2. The bending rod 33 is located on the side of the fixed plate 14 away from the rear anti-collision beam frame 2, and the bending rod 33 is bent downward at an angle. Under the action of the bending rod 33, the sliding rod 31 will not be separated from the sliding hole under the elastic force of the high-strength spring 32, so the bending rod 33 plays a role in limiting the sliding rod 31.

[0031] Reference Figure 1 and Figure 2 A buffer water tank 34 is fixedly installed on one side of the fixed plate 14 near the rear anti-collision beam frame 2, and water is contained in the buffer water tank 34. The buffer water tank 34 is arranged at intervals with the rear anti-collision beam frame 2. When the impact force is large and the high-strength spring 32 loses its function, the impact force will be transmitted to the buffer water tank 34, and the buffer water tank 34 will provide a part of the buffer force. In addition, if the buffer water tank 34 is broken, the water in the buffer water tank 34 will splash onto the front of the rear-end car 11. If the front of the rear car 11 is on fire at this time, it can play a certain role in extinguishing the fire; if the rear car is not on fire, it can also play a role in cooling the front of the rear vehicle 11.

[0032] Reference Figure 1 and Figure 2 A blocking plate 15 is welded to the bottom side of the rear end of the frame 12, and the blocking plate 15 is located on the side of the fixed plate 14 away from the buffer water tank 34. There is a sliding gap between the blocking plate 15 and the bending rod 33 for the bending rod 33 and the sliding rod 31 to slide. The distance of the sliding gap between the blocking plate 15 and the bending rod 33 is greater than the distance from the side of the buffer water tank 34 away from the fixed plate 14 to the rear anti-collision beam 2, and thus the bending rod 33 can contact the blocking plate 15 only when the water tank is broken.

[0033] Reference Figure 2 and Figure 3Since the bending rod 33 is bent downward, the side of the blocking plate 15 close to the ground is integrally formed with an inclined plate 16, which is gradually inclined from top to bottom in a direction away from the fixed plate 14. After receiving a huge impact force, the inclined plate 16 can guide the bending rod 33 to bend downward, and then guide the sliding rod 31 to bend downward, so that the bending rod 33 and the sliding rod 31 are not likely to hit other parts of the semi-trailer on the side of the blocking plate 15 away from the fixed plate 14 due to the huge impact force.

[0034] Combination Figure 1 Reference Figure 2 and Figure 3 A reinforcing rib 17 is welded between the blocking plate 15 and the inclined plate 16, and the reinforcing rib 17 is located on the side of the blocking plate 15 away from the fixed plate 14. There are multiple reinforcing ribs 17 welded, and the multiple reinforcing ribs 17 are arranged at intervals along the horizontal direction of the blocking plate 15 perpendicular to the sliding of the sliding rod 31. At the same time, in order to improve the connection strength between the blocking plate 15 and the frame 12, a reinforcing plate 18 is welded on one side of the blocking plate 15 close to the fixed plate 14, and the other side of the reinforcing plate 18 is welded to the bottom of the frame 12. There are also multiple reinforcing plates 18 welded, and the spacing arrangement direction of the multiple reinforcing plates 18 is consistent with the spacing arrangement direction of the multiple reinforcing ribs 17.

[0035] The implementation principle of a semi-trailer with a locking device in an embodiment of the present application is as follows: first, when a rear car collides with the semi-trailer, the front 11 of the rear car will first hit the rear anti-collision beam 2, and the rear anti-collision beam 2 will move toward the direction close to the front 11 and squeeze the high-strength spring 32, thereby playing an elastic buffering role for the rear-end vehicle and helping the rear-end vehicle to relieve part of the impact force.

[0036] Secondly, if the impact force during rear-end collision is large and exceeds the elastic buffering force of the high-strength spring 32, the buffer water tank 34 will also play a buffering role and relieve part of the impact force again. In addition, after the buffer water tank 34 is broken, the bending rod 33 will bend and deform downward under the action of the inclined plate 16, and will also guide the sliding rod 31 to bend and deform downward, thereby making it difficult for the sliding rod 31 to be inserted into other parts of the semi-trailer itself in the horizontal direction to damage the semi-trailer body 1.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A semitrailer with a locking device, characterized in that: The semitrailer comprises a trailer body (1), a rear anti-collision beam frame (2), and an elastic buffer component (3), wherein the rear anti-collision beam frame (2) is slidably mounted on the semitrailer body (1), and the elastic buffer component (3) is connected to the rear anti-collision beam frame (2) to drive the rear anti-collision beam frame (2) to have a tendency to move toward the rear of the semitrailer body (1); the elastic buffer component (3) comprises a sliding rod (31), one end of the sliding rod (31) is fixedly connected to the rear anti-collision beam frame (2), and the side of the sliding rod (31) away from the rear anti-collision beam frame (2) is slidably connected to the semitrailer body (1).

2. A semitrailer with a locking device according to claim 1, characterized in that: A fixing plate (14) is fixedly mounted on the rear of the semi-trailer body (1), and a sliding hole is provided on the fixing plate (14) for the sliding rod (31) to pass through on the side away from the rear anti-collision beam frame (2).

3. A semitrailer with a locking device according to claim 2, characterized in that: The elastic buffer assembly (3) further comprises a high-strength spring (32), one end of the high-strength spring (32) abuts against the fixing plate (14), and the other end of the high-strength spring (32) abuts against the rear anti-collision beam frame (2).

4. A semitrailer with a locking device according to claim 2, characterized in that: A buffer water tank (34) is provided on one side of the fixing plate (14) close to the rear anti-collision beam frame (2).

5. A semitrailer with a locking device according to claim 4, characterized in that: A blocking plate (15) is provided on a side of the fixed plate (14) facing away from the buffer water tank (34); the blocking plate (15) is fixedly mounted on the semi-trailer body (1), and a sliding gap is spaced between the blocking plate (15) and the fixed plate (14) for the sliding rod (31) to move.

6. A semitrailer with a locking device according to claim 5, characterized in that: One end of the sliding rod (31) close to the blocking plate (15) is provided with a bending rod (33) which causes the sliding rod (31) to bend after colliding with the blocking plate (15).

7. A semitrailer with a locking device according to claim 6, characterized in that: A tilting plate (16) is provided on one side of the blocking plate (15) close to the ground to guide the bending rod (33) and the sliding rod (31) to bend after impact.

8. A semitrailer with a locking device according to claim 7, characterized in that: A reinforcing rib (17) is provided between the inclined plate (16) and the blocking plate (15).

9. A semitrailer with a locking device according to claim 8, characterized in that: A reinforcing plate (18) is provided at the connection between the blocking plate (15) and the semi-trailer body (1).

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