Rear anti-collision device of truck

Abstract

The utility model relates to a rear anti-collision device of a truck, which comprises a girder, a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate are sequentially arranged on the lower side of the girder from back to front and are perpendicular to the girder, the lower end of the first supporting plate is hinged with one side of a baffle, and a pushing assembly for driving the baffle to rotate is arranged between the baffle and the girder and is electrically connected with a sensor. The sensor is arranged on the rear side of the second supporting plate, a guide rod is movably arranged on the second supporting plate, a limiting plate is arranged at the rear end of the guide rod, a second buffering piece is arranged between the limiting plate and the second supporting plate, a limiting rod is arranged on the rear side of the limiting plate, the limiting rod is matched with a limiting hole (24) in the side, away from the first supporting plate, of the baffle, and a movable rod is arranged on the first supporting plate. The front end of the movable rod abuts against the limiting plate, and the rear end of the movable rod is fixed to the anti-collision cross beam, so that the trafficability of a truck can be guaranteed, whether the truck collides or not can be accurately judged, a baffle below a girder can be pushed out, a car is prevented from entering the bottom of the truck, and follow-up damage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of truck protection, in particular to a rear-mounted anti-collision device for a truck. Background Art

[0002] With the development of the economy, the number of vehicles in use has increased, and the incidence of rear-end collisions between cars and trucks has increased. Due to the poor compatibility between the two, rear-end collisions often result in the destruction of the vehicle and the death of passengers. When a car rear-ends a truck, due to the higher body of the truck, the car can easily get under the truck, causing the upper part of the car to be severely squeezed and deformed, causing serious injuries to the driver and passengers. Although trucks currently have anti-collision devices installed at the lower part of the rear, the anti-collision beam of the truck is installed at a high position, so in the event of a violent collision, the car can still easily get under the truck.

[0003] A Chinese patent document, CN205615451U, discloses a truck rear collision avoidance structure. This structure employs a load-bearing plate, a resistance member, and a buffer assembly between the load-bearing plate and the resistance member to minimize damage to vehicles and reduce losses from accidents. However, under normal conditions, this structure places the load-bearing plate and the resistance member perpendicular to the beam, resulting in an excessively low distance between the load-bearing plate, the resistance member, and the bottom surface, significantly reducing the truck's ability to pass through traffic.

[0004] A Chinese patent document, CN218986558U, discloses a rear-end collision prevention device for automobiles. This device uses a sensor installed at the rear end of the beam to detect impacts. After an automatic unlocking assembly unlocks the baffle, a thrust assembly pushes the baffle backward to block the car, preventing it from running under the vehicle. However, this approach can easily misjudge the approach of an object, sending a signal to the control module, which can cause the baffle to be pushed out inadvertently. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a rear anti-collision device for trucks, which can not only ensure the passability of the trucks, but also accurately judge whether the vehicles have collided and push out the baffle under the beam to prevent cars from getting under the vehicle and reduce subsequent damage.

[0006] The rear end of the vehicle frame is fixed with a first support member and a second support member, the lower end of the first support member being hinged to the side of the vehicle frame, and the rear end of the vehicle frame is connected with the first support member to the second support member.

[0007] Furthermore, the pushing component adopts an electric telescopic rod, one end of the electric telescopic rod is hinged to the beam, and the other end is hinged to the middle part of the baffle.

[0008] Furthermore, a shear hole is provided on the baffle, a screw is fitted in the shear hole, a buffer sleeve is slidably fitted at the rear end of the screw, a buffer plate parallel to the baffle is fixed to the rear end of the buffer sleeve, and a third buffer spring is provided between the buffer plate and the baffle.

[0009] Furthermore, the movable rod is provided with at least two groups and is evenly distributed on the first support plate. The first support plate is provided with a first through hole that cooperates with the movable rod. The first buffer part is a first buffer spring sleeved on the movable rod. The two ends of the first buffer spring are respectively fixed to the first support plate and the anti-collision beam.

[0010] Furthermore, the guide rod is provided with at least two groups and is evenly distributed on the second support plate. The second support plate is provided with a second through hole that movably cooperates with the guide rod. The second buffer part is a second buffer spring sleeved on the guide rod. The two ends of the second buffer spring are respectively fixed to the second support plate and the limit plate.

[0011] Furthermore, the limiting plate is provided with a guide cylinder that cooperates with the rear end of the movable rod, and the upper end of the limiting plate is slidably connected to the beam.

[0012] Furthermore, a limit block is provided at the front end of the guide rod.

[0013] The beneficial effects of the present invention are as follows: the first support plate on the beam supports the anti-collision beam, and the second support plate supports the limit plate. The lower end of the first support plate is hinged to one side of the baffle. By pushing the assembly, the baffle can be rotated about the hinge point between the first support plate and the baffle, turning the baffle horizontally and retracting it, ensuring the passability of trucks during daily driving. The baffle can also be rotated vertically to block the car when it collides with the truck, preventing the car from under the vehicle and cushioning the impact, thereby reducing the impact of the collision between the car and the truck. A guide rod is provided on the second support plate, and a limit plate is provided at the rear end of the guide rod. The limit plate is located behind the sensor. A movable rod is provided on the first support plate, with the front end of the movable rod abutting the limit plate, and the rear end of the movable rod is fixed to the anti-collision beam. When the car collides with the anti-collision beam, the anti-collision beam moves toward the front of the truck, thereby driving the movable rod to move toward the front of the truck and pushing the limit plate forward. When the limit plate moves forward, it drives the limit rod forward, thereby disengaging the limit rod from the limit hole on the baffle, thereby unlocking the baffle and allowing it to rotate. At the same time, when the sensor detects the displacement of the limit plate, it drives the pushing assembly to push the baffle to rotate along the hinge point between the baffle and the first support plate, so that the baffle is perpendicular to the bottom surface to block the car. At this time, the first buffer between the anti-collision beam and the first support plate and the second buffer between the limit plate and the second support plate can absorb part of the impact force, reducing the impact of the collision between the car and the truck. To sum up, with this method, the anti-collision beam is displaced by the force after the collision, which drives the limit plate to move, and the sensor detects whether the limit plate is displaced to determine whether the truck has a collision accident. This reduces the possibility of the baffle accidentally popping out when an object or vehicle approaches the truck but no collision occurs, thereby improving accuracy. By rotating the baffle so that it is perpendicular to the ground, the possibility of the car running under the car when rear-ending it is reduced, reducing the degree of damage to the car. In addition, the baffle can be folded up during daily driving to improve the truck's passability.

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the baffle being pushed open in the present invention;

[0016] Figure 2 It is a structural schematic diagram of the folding baffle of the utility model.

[0017] In the accompanying drawings: 1-beam, 11-first support plate, 111-first through hole, 12-second support plate, 121-second through hole, 2-baffle, 21-pushing assembly, 22-shear hole, 23-screw, 24-limiting hole, 3-sensor, 4-limiting plate, 41-guide rod, 411-limiting block, 42-limiting rod, 43-second buffer, 44-guide cylinder, 5-anti-collision beam, 51-movable rod, 52-first buffer, 6-buffer plate, 61-buffer sleeve, 62-third buffer spring. DETAILED DESCRIPTION

[0018] With reference to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0019] Reference Figures 1 to 2 The utility model provides a rear-mounted anti-collision device for a truck, characterized in that it includes a beam 1 and a first support plate 11 and a second support plate 12 which are arranged on the lower side of the beam 1 from back to front and are perpendicular to the beam 1. The beam 1 is connected to the vehicle body, and the first support plate 11 on the beam 1 supports the anti-collision beam 5, and the second support plate 12 supports the limit plate 4.

[0020] The lower end of the first support plate 11 is hinged to one side of the baffle 2. A push assembly 21 is provided between the baffle 2 and the beam 1 to drive the baffle 2 to rotate. The push assembly 21 can rotate the baffle 2 around the hinge point between the first support plate 11 and the baffle 2, so that the baffle 2 is rotated to a horizontal direction and the baffle 2 is retracted, ensuring the passability of the truck during daily driving. The baffle 2 can also be rotated to a vertical direction to block the car when it hits the truck, preventing the car from drilling under the car and buffering the impact force, thereby reducing the impact of the collision between the car and the truck. Furthermore, the push assembly 21 uses an electric telescopic rod, one end of which is hinged to the beam 1 and the other end is hinged to the middle of the baffle 2. When the electric telescopic rod is extended, it drives the baffle 2 to rotate perpendicular to the bottom surface. When the electric telescopic rod is retracted, it drives the baffle 2 to be retracted horizontally.

[0021] The pushing assembly 21 is electrically connected to the sensor 3, which is located on the rear side of the second support plate 12. A guide rod 41 is movably provided on the second support plate 12. Furthermore, a limit block 411 is provided at the front end of the guide rod 41 to limit the guide rod 41 and prevent it from detaching from the second support plate 12. A limit plate 4 is provided at the rear end of the guide rod 41. A second buffer 43 is provided between the limit plate 4 and the second support plate 12. The limit plate 4 is located on the rear side of the sensor 3. A limit rod 42 is provided on the rear side of the limit plate 4. The limit rod 42 cooperates with the limit hole 24 on the side of the baffle 2 away from the first support plate 11 to lock the relative position between the baffle 2 and the beam 1, ensuring the stability of the baffle 2 during daily driving. Furthermore, a limiting lug is provided on the baffle 2, the limiting hole 24 is provided on the limiting lug, a movable rod 51 is provided on the first support plate 11, the front end of the movable rod 51 abuts the limiting plate 4, the rear end of the movable rod 51 is fixed to the anti-collision beam 5, the anti-collision beam 5 is arranged parallel to the first support plate 11 and a first buffer member 52 is provided between the first support plate 11.

[0022] When the car collides with the anti-collision beam 5, it moves toward the front of the truck, driving the movable rod 51 toward the front of the truck and pushing the limit plate 4 forward. The forward movement of the limit plate 4 drives the limit rod 42 forward, disengaging the limit rod 42 from the limit hole 24 on the baffle 2, thereby unlocking the baffle 2 and allowing it to rotate. Simultaneously, when the sensor 3 detects the displacement of the limit plate 4, the push assembly 21 drives the baffle 2 to rotate along the hinge point between the baffle 2 and the first support plate 11, causing the baffle 2 to block the car perpendicular to the bottom surface. At this point, the first buffer 52 between the anti-collision beam 5 and the first support plate 11 and the second buffer 43 between the limit plate 4 and the second support plate 12 can absorb part of the impact force, achieving primary buffering and reducing the impact of the collision between the car and the truck.

[0023] In some embodiments, the baffle 2 is provided with a shear hole 22, in which a screw 23 is fitted. A buffer sleeve 61 is slidably fitted at the rear end of the screw 23. A buffer plate 6 parallel to the baffle 2 is fixed to the rear end of the buffer sleeve 61, and a third buffer spring 62 is provided between the buffer plate 6 and the baffle 2. At this time, when the baffle 2 is retracted, the buffer plate 6 and the baffle 2 are both in a horizontally retracted state. When a vehicle collides with a truck, the baffle 2 is lowered and the buffer plate 6 is located at the rear side of the baffle 2. The car first collides with the buffer plate 6, which moves forward, compressing the third buffer spring 62. The third buffer spring 62 absorbs part of the impact force, achieving secondary buffering. When the collision energy continues to be transmitted forward, the screw 23 cooperates with the shear hole 22 to absorb a large amount of impact energy, achieving tertiary buffering. Through multi-stage buffering, the impact force of the car is consumed, reducing the damage caused by the collision.

[0024] Furthermore, the movable rods 51 are provided in at least two groups and are evenly distributed on the first support plate 11. The first support plate 11 is provided with a first through hole 111 that cooperates with the movable rods 51. The first buffer member 52 is a first buffer spring that is sleeved on the movable rod 51, and the two ends of the first buffer spring are respectively fixed to the first support plate 11 and the anti-collision beam 5. In this case, when the car collides with the anti-collision beam 5, the stability of the anti-collision lateral movement can be improved, enabling the movable rods 51 to move the front side of the box smoothly, ensuring that the movable rods 51 can push the limit plate 4 to move. Furthermore, the guide rods 41 are provided in at least two groups and are evenly distributed on the second support plate 12. The second support plate 12 is provided with a second through hole 121 that flexibly cooperates with the guide rods 41. The second buffer member 43 is a second buffer spring that is sleeved on the guide rod 41, and the two ends of the second buffer spring are respectively fixed to the second support plate 12 and the limit plate 4. At this time, when the movable rod 51 pushes the limit plate 4 to move, the guide rod 41 guides the movement of the limit plate 4 while the second buffer spring absorbs the impact force, ensuring that the limit plate 4 can move forward stably. Furthermore, the limit plate 4 is provided with a guide cylinder 44 that cooperates with the rear end of the movable rod 51, and the upper end of the limit plate 4 is slidably connected to the beam 1. Through the cooperation between the movable rod 51 and the guide cylinder 44, when the movable rod 51 previously moves to the front inner wall of the guide cylinder 44, the limit plate 4 continues to be pushed forward by the guide cylinder 44, and the sliding connection between the limit plate 4 and the beam 1 further ensures the stability of the movement of the limit plate 4, thereby preventing the limit plate 4 from getting stuck and preventing the baffle 2 from not opening when the car collides with the truck.

[0025] To sum up, by adopting this method, the anti-collision beam 5 is displaced by the force after the collision, which drives the limit plate 4 to move, and the sensor 3 detects whether the limit plate 4 is displaced to determine whether the truck has a collision accident. This reduces the possibility of the baffle 2 accidentally popping out when an object or vehicle approaches the truck but no collision occurs, thereby improving accuracy. By rotating the baffle 2 so that it is perpendicular to the ground, the possibility of the car drilling into the bottom of the car when rear-ending it is reduced, reducing the degree of damage to the car, and the baffle 2 can be folded up during daily driving to improve the truck's passability.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rear-mounted anti-collision device for a truck, characterized in that: include: A beam (1) and a first support plate (11) and a second support plate (12) which are arranged on the lower side of the beam (1) from back to front and are perpendicular to the beam (1), The lower end of the first support plate (11) is hinged to one side of the baffle (2), and a pushing component (21) for driving the baffle (2) to rotate is provided between the baffle (2) and the beam (1). The pushing component (21) is electrically connected to a sensor (3), and the sensor (3) is provided on the rear side of the second support plate (12). A guide rod (41) is movably provided on the second support plate (12), a limit plate (4) is provided at the rear end of the guide rod (41), a second buffer (43) is provided between the limit plate (4) and the second support plate (12), a limit rod (42) is provided on the rear side of the limit plate (4), and the limit rod (42) cooperates with a limit hole (24) on the side of the baffle (2) away from the first support plate (11). A movable rod (51) is provided on the first support plate (11), the front end of the movable rod (51) abuts against the limit plate (4), the rear end of the movable rod (51) is fixed to the anti-collision beam (5), and the anti-collision beam (5) is arranged parallel to the first support plate (11) and a first buffer member (52) is provided between the anti-collision beam (5) and the first support plate (11).

2. The truck rear anti-collision device according to claim 1, characterized in that: The pushing assembly (21) adopts an electric telescopic rod, one end of which is hinged to the beam (1), and the other end of which is hinged to the middle of the baffle (2).

3. The rear-mounted anti-collision device for trucks according to claim 1, characterized in that: The baffle (2) is provided with a shearing hole (22), a screw (23) is fitted in the shearing hole (22), a buffer sleeve (61) is slidably fitted at the rear end of the screw (23), a buffer plate (6) parallel to the baffle (2) is fixed at the rear end of the buffer sleeve (61), and a third buffer spring (62) is provided between the buffer plate (6) and the baffle (2).

4. The truck rear anti-collision device according to claim 1, characterized in that: The movable rod (51) is provided with at least two groups and is evenly distributed on the first support plate (11); the first support plate (11) is provided with a first through hole (111) that cooperates with the movable rod (51); the first buffer member (52) is a first buffer spring sleeved on the movable rod (51); the two ends of the first buffer spring are respectively fixed to the first support plate (11) and the anti-collision beam (5).

5. The rear-mounted anti-collision device for trucks according to claim 1, characterized in that: The guide rods (41) are provided with at least two groups and are evenly distributed on the second support plate (12); the second support plate (12) is provided with a second through hole (121) movably matched with the guide rods (41); the second buffer member (43) is a second buffer spring sleeved on the guide rods (41); the two ends of the second buffer spring are respectively fixed to the second support plate (12) and the limit plate (4).

6. The truck rear anti-collision device according to claim 1, characterized in that: The limiting plate (4) is provided with a guide cylinder (44) that cooperates with the rear end of the movable rod (51), and the upper end of the limiting plate (4) is slidably connected to the beam (1).

7. The truck rear collision avoidance device according to claim 1, characterized in that: A limiting block (411) is provided at the front end of the guide rod (41).

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