Truck rear anti-collision beam and anti-collision assembly

Abstract

The invention relates to the field of trucks, in particular to a truck rear anti-collision beam and an anti-collision assembly.The truck rear anti-collision beam comprises at least one set of telescopic vertical rods (1), and transverse plates (2) extending in the radial direction are arranged at the bottoms of the vertical rods (1). The center of the rear anti-collision beam is exactly located at the height of the front anti-collision beam of the rear automobile, the rear automobile is prevented from entering the bottom of the truck, a driver and passengers of the rear automobile can be effectively protected, the departure angle of the truck can be increased, the scratching risk is reduced, modification is convenient on the basis of the prior art, and cost is reduced. The structure is simple, the stability is high, and the market popularization value is great.

Description

Technical Field

[0001] The invention relates to the field of automobiles, and in particular to a rear anti-collision beam and an anti-collision component of a truck. Background Art

[0002] With the rapid development of the automobile industry and the increasing traffic on the roads, the incidence of traffic accidents is also increasing. Among all types of traffic accidents, the death rate caused by truck rear-end collisions is four times that of other accidents. Truck rear-end collisions have also attracted much attention due to the serious consequences they cause. Traditional truck rear anti-collision beams are often designed with only structural strength in mind, lacking effective protection for the rear vehicle's occupants. In actual use, due to the different heights of cars and SUVs on the road, the impact points of different vehicles with the truck's rear anti-collision beam are also different. An impact point that is too high or too low may cause the truck's rear anti-collision beam to fail to achieve its due effect, especially since cars have a lower body and are more likely to get under the truck, leading to serious consequences.

[0003] Therefore, those skilled in the art are committed to developing a truck rear anti-collision beam and an anti-collision assembly that is height-adjustable and can effectively protect the safety of the rear vehicle's drivers and passengers. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a truck rear anti-collision beam and an anti-collision assembly.

[0005] To achieve the above-mentioned purpose, the present invention provides a rear anti-collision beam for a truck, comprising at least one group of retractable vertical rods, a horizontal plate being provided at the bottom of the vertical rods, the vertical rods providing a mounting base for the horizontal plate, the horizontal plate being the main body of the anti-collision beam, and the retractable vertical rods driving the horizontal plate to slide up and down so as to adjust the horizontal plate to a suitable height to accept the impact of the rear vehicle.

[0006] Preferably, the vertical rod includes a first connecting rod, which has a first sliding groove extending in the length direction. The second connecting rod is slidably engaged in the first sliding groove. The second connecting rod can slide up and down along the second sliding groove. The height of the second connecting rod is less than or equal to the depth of the first sliding groove. Sliding the second connecting rod in the first sliding groove can maximize space saving, reduce dead weight, and save materials without reducing structural strength. On the other hand, the second connecting rod can also be limited so that it can only slide up and down along the first sliding groove but not left and right.

[0007] Preferably, a first base is provided in the first slide groove, the first base provides an installation basis for the equipment, a drive motor is provided on the first base, the drive motor provides a power source, a lead screw is connected to the output shaft of the drive motor, the drive motor drives the lead screw to rotate, and the lead screw is threadedly connected to the second connecting rod at one end away from the drive motor.

[0008] Preferably, a second slide groove is provided on the side of the second connecting rod away from the first slide groove. The provision of the second slide groove can reduce the deadweight of the second connecting rod and save manufacturing materials. A second base is provided in the second slide groove. A through hole is provided on the second base extending along the length direction of the second slide groove. An internal thread matching with the lead screw is provided in the through hole. The second base is threadedly connected to the lead screw. When in use, the driving motor drives the lead screw to rotate, and the lead screw cooperates with the internal thread on the second base to drive the second base to reciprocate up and down along the lead screw, and the second base drives the second connecting rod to move synchronously.

[0009] Preferably, a cross bar is provided on the side of the cross plate away from the vertical bar, and a plurality of support rods are provided between the cross plate and the cross bar, and one end of the plurality of support rods is connected to the cross plate, and the other end is connected to the cross bar. By providing the cross bar, it becomes a first layer of energy absorption device. When a collision occurs, the rear vehicle first contacts the cross bar, and the kinetic energy of the rear vehicle is reduced by the deformation of the cross bar, which can effectively reduce damage to the rear vehicle. At the same time, a certain buffer time can be obtained to facilitate the first connecting rod and the second connecting rod to unfold to a suitable position.

[0010] The present invention also provides a truck rear anti-collision assembly, comprising any of the above-described truck rear anti-collision beams, and also comprising at least one energy absorbing column, one end of which is slidably matched with the cross plate. The energy absorbing column can significantly absorb the kinetic energy of the rear-end vehicle through deformation, thereby preventing the rear-end vehicle from drilling into the bottom of the truck.

[0011] Preferably, the horizontal plate is provided with an upwardly extending notch on one side close to the vertical rod, and the energy absorbing column and the horizontal plate are slidably fitted in the notch. This design can effectively resist lateral collision.

[0012] Preferably, the energy absorbing column is filled with energy absorbing material for absorbing energy.

[0013] Preferably, a plurality of diamond-shaped through holes are opened on the side wall of the energy absorbing column, and the plurality of diamond-shaped through holes absorb energy through deformation.

[0014] Preferably, a mounting seat is provided on the energy absorbing column, and a spare tire is provided on the mounting seat. The mounting seat provides a mounting base for the spare tire, and in case of a collision, the kinetic energy of the following vehicle can be further absorbed and reduced through the elastic deformation of the spare tire.

[0015] The beneficial effect of the present invention is that the present invention can adjust the position of the rear anti-collision beam in real time according to the height of the rear vehicle, so that it is in the best anti-collision state before the collision occurs, that is, the center of the rear anti-collision beam is exactly located at the height of the front anti-collision beam of the rear car, preventing the rear vehicle from drilling into the bottom of the truck. This design can effectively protect the driver and passengers of the rear vehicle while also increasing the departure angle of the truck and reducing the risk of scratches. It is easy to modify on the existing basis, has a simple structure and strong stability, and has great market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural schematic diagram of a specific implementation mode of the present invention.

[0017] Figure 2 It is a top view of a specific embodiment of the present invention.

[0018] Figure 3 It is a structural schematic diagram of a vertical rod in a specific implementation manner of the present invention.

[0019] 1. Vertical rod; 11. First connecting rod; 111. First slide groove; 111a. First base; 111b. Driving motor; 111c. Lead screw; 12. Second connecting rod; 121. Second slide groove; 121a. Second base; 121b. Through hole; 2. Horizontal plate; 21. Notch; 3. Horizontal rod; 4. Support rod; 5. Energy absorbing column; 51. Diamond through hole; 52. Mounting seat. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as limiting the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] like Figure 1-3 As shown, a truck rear anti-collision beam includes at least one group of retractable vertical rods 1 connected to a truck beam (not shown in the figure) at one end. In this embodiment, the number of vertical rods 1 is two groups. In other embodiments, other numbers of vertical rods 1 can be set as needed. The vertical rod 1 includes a first connecting rod 11. The first connecting rod 11 is provided with a first slide groove 111 extending along the length direction of the first connecting rod 11. A second connecting rod 12 is slidably fitted in the first slide groove 111. In this embodiment, the sliding fit is a clearance fit. The second connecting rod 12 can slide along the first slide groove 111. Sliding up and down, the height of the second connecting rod 12 is less than or equal to the depth of the second sliding groove 121. This design can save space without affecting the structural strength of the vertical rod 1, which is conducive to the miniaturization of the equipment. The second connecting rod 12 is far away from the end of the first connecting rod 11 and is provided with a cross plate 2 extending vertically along the second connecting rod 12. The cross plate 2 is the main body of the rear anti-collision beam and plays a major load-bearing role in a collision accident. The vehicle kinetic energy is reduced by the deformation of the cross plate 2. In this embodiment, the cross plate 2 is made of high-strength steel and is coated with an anti-rust coating on the surface to improve its durability and corrosion resistance.

[0022] A first base 111a is provided in the first slide groove 111, and a driving motor 111b is provided on the first base 111a. The first base 111a provides an installation basis for the driving motor 111b. A lead screw 111c is connected to the output shaft of the driving motor 111b. The lead screw 111c extends along the length direction of the first slide groove 111. The driving motor 111b serves as a power source, and the output power is reduced by a reducer (not shown in the figure) and then drives the lead screw 111c to rotate.

[0023] A second slide groove 121 is provided on the side of the second connecting rod 12 away from the first slide groove 111, and a second base 121a is provided in the second slide groove 121. A through hole 121b extending along the length direction of the second slide groove 121 is provided on the second base 121a, and an internal thread matching the lead screw 111c is provided in the through hole 121b. When in use, the driving motor 111b drives the lead screw 111c to rotate, and the second base 121a makes a linear motion along the lead screw 111c under the action of the thread matching with the lead screw 111c, and the second base 121a drives the second connecting rod 12 to move synchronously, and the second connecting rod 12 drives the cross plate 2 to move synchronously. This design can make the cross plate 2 adjust its position by sliding up and down before the collision comes, so that it is in the best anti-collision state (that is, the center of the cross plate 2 is just at the height of the front anti-collision beam of the rear car), which is conducive to preventing the rear car from getting under the truck. At the same time, this design can be raised when the truck is driving normally, increasing the distance between the rear anti-collision beam and the ground, that is, increasing the departure angle of the truck.

[0024] A cross bar 3 is provided on the side of the cross plate 2 away from the vertical bar 1. In this embodiment, the cross bar 3 is a round tube extending along the length direction of the cross plate 2, and the length of the cross bar 3 is less than or equal to the length of the cross plate 2. A number of support rods 4 are provided between the cross plate 2 and the cross bar 3. The support rods 4 are made of metal with relatively high toughness. In this embodiment, the support rods 4 are made of titanium alloy. In other embodiments, they can also be made of other tough metal materials such as aluminum alloy, nickel-based alloy or magnesium alloy. One end of the support rods 4 is connected to the cross plate 2, and the other end is connected to the cross bar 3. This design makes the cross bar 3 a first-layer energy absorption device. When a collision occurs, the rear vehicle first contacts the cross bar 3, and the kinetic energy of the rear vehicle is reduced by the deformation of the cross bar 3 and the support rod 4, which can effectively reduce the damage to the rear vehicle. At the same time, a certain buffer time can also be obtained to facilitate the first connecting rod 11 and the second connecting rod 12 to extend to a suitable position.

[0025] The present invention further provides a truck rear anti-collision assembly, comprising any of the above-described truck rear anti-collision beams, and also comprising at least one energy absorbing column 5. In this embodiment, two energy absorbing columns 5 are provided, and other embodiments may also provide other numbers of energy absorbing columns 5. The energy absorbing column 5 is filled with energy absorbing material. In this embodiment, the energy absorbing material is foam, and other embodiments may also use rubber, sponge and other similar energy absorbing materials. A plurality of diamond-shaped through holes 51 are also provided on the side wall of the energy absorbing column 5. The diamond-shaped through holes 51 absorb energy by deformation when under pressure. One end of the energy absorbing column 5 is fixedly connected to the truck beam (not shown in the figure), and the other end is slidably matched with the cross plate 2. In the embodiment, the sliding fit is a clearance fit. Specifically, an upwardly extending slot 21 is provided on the side of the transverse plate 2 close to the vertical rod 1. One end of the energy absorbing column 5 is fixedly connected to the truck beam, and the other end slides with the transverse plate 2 in the slot 21. The design of the slot 21 can effectively resist lateral collision and is beneficial to the up and down movement of the transverse plate 2. The energy absorbing column 5, the transverse plate 2, the vertical rod 1 and the truck beam together form a triangular structure. This design can greatly improve the stability and bearing capacity of the vertical rod 1 and the transverse plate 2. At the same time, the deformation energy absorption of the energy absorbing column 5 can also maximize the protection of the drivers and passengers of the rear vehicle to prevent the rear vehicle from drilling into the bottom of the truck.

[0026] In this embodiment, a mounting seat 52 is also provided on the energy absorbing column 5. The mounting seat 52 provides a mounting base for the spare tire (not shown in the figure). This design enables the spare tire to withstand the impact force generated by a rear-end collision in a low-coincidence rear-end collision, and utilizes the elastic deformation of the spare tire to absorb the impact energy and reduce damage to the following vehicle. Specifically, the distance between the center of the mounting seat 52 and the ground is greater than the maximum radius of the spare tire to ensure that the spare tire will not contact the ground during installation, and the distance between the center of the mounting seat 52 and the cross plate 2 does not exceed 1.2 times the maximum radius of the spare tire to ensure that the spare tire can effectively play a buffering role in a rear-end collision.

[0027] When in use, the truck monitors the driving information of the rear vehicle in real time through sensors (not shown in the figure). When it is determined that there is a risk of rear-end collision, the drive motor 111b is started to extend or retract the vertical rod 1, driving the cross plate 2 to move synchronously, so that the cross plate 2 is in the best anti-collision state. After the collision occurs, most of the kinetic energy is absorbed by the deformation of the energy-absorbing column 5, and the remaining kinetic energy is transmitted to the truck beam along the energy-absorbing column 5, preventing the rear-end vehicle from drilling into the bottom of the truck, thereby effectively protecting the driver and passengers of the rear vehicle.

[0028] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A truck rear anti-collision beam, characterized by: It comprises at least one group of telescopic vertical rods (1), wherein a horizontal plate (2) is provided at the bottom of the vertical rods (1).

2. The truck rear anti-collision beam according to claim 1, characterized in that: The vertical rod (1) comprises a first connecting rod (11), the first connecting rod (11) is provided with a first sliding groove (111) extending in the length direction, a second connecting rod (12) is slidably fitted in the first sliding groove (111), and the height of the second connecting rod (12) is less than or equal to the depth of the first sliding groove (111).

3. The truck rear anti-collision beam according to claim 2, characterized in that: A first base (111a) is provided in the first sliding groove (111), a driving motor (111b) is provided on the first base (111a), a lead screw (111c) is connected to the output shaft of the driving motor (111b), and one end of the lead screw (111c) away from the driving motor (111b) is threadedly connected to the second connecting rod (12).

4. The truck rear anti-collision beam according to claim 3, characterized in that: A second slide groove (121) is provided on the side of the second connecting rod (12) away from the first slide groove (111); a second base (121a) is provided in the second slide groove (121); a through hole (121b) extending along the length direction of the second slide groove (121) is provided on the second base (121a); ​​an internal thread matching the lead screw (111c) is provided in the through hole (121b); and the second base (121a) is threadedly connected to the lead screw (111c).

5. The truck rear anti-collision beam according to claim 1, characterized in that: A cross bar (3) is provided on the side of the cross plate (2) away from the vertical bar (1), and a plurality of support bars (4) are provided between the cross plate (2) and the cross bar (3). One end of the plurality of support bars (4) is connected to the cross plate (2), and the other end is connected to the cross bar (3).

6. A truck rear anti-collision assembly, comprising the truck rear anti-collision beam according to any one of claims 1 to 4, characterized in that: It also comprises at least one energy absorbing column (5), one end of which is in sliding cooperation with the transverse plate (2).

7. The truck rear impact protection assembly according to claim 6, characterized in that: A notch (21) extending upward is provided on one side of the transverse plate (2) close to the vertical rod (1), and the energy absorbing column (5) and the transverse plate (2) are slidably fitted in the notch (21).

8. The truck rear impact protection assembly according to claim 6, characterized in that: The energy absorbing column (5) is filled with energy absorbing material.

9. The truck rear impact protection assembly according to claim 6, characterized in that: A plurality of diamond-shaped through holes (51) are formed on the side wall of the energy absorbing column (5).

10. The truck rear anti-collision assembly according to claim 6 or 7, characterized in that: The energy absorbing column (5) is provided with a mounting seat (52), and the mounting seat (52) is provided with a spare tire.

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