Active early warning energy-absorbing buffer type protection system

Abstract

The present invention belongs to the technical field of automotive collision safety, and relates to an active warning energy-absorbing and buffering protection system, which includes an integrated protection crossbeam assembly, at least one connecting bracket, at least one damper, at least one monitoring system and a data processing and control system. The connecting bracket is fixedly arranged on the vehicle frame. The shaft end of the damper is connected to the protection crossbeam assembly, and the housing is connected to the connecting bracket. The protection crossbeam assembly is rotatably connected to the connecting bracket. A pre-torsion member is arranged between the protection crossbeam assembly and the connecting bracket. The monitoring system is arranged at the rear end of the vehicle frame for monitoring the information data of the vehicle behind. The data processing system is electrically connected to the damper and the monitoring system, and is used for receiving the information data and controlling the limiting state of the damper according to the information data. It has the functions of double energy absorption and buffering and higher safety performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive collision safety, and particularly relates to an active warning energy-absorbing and buffering protection system. Background Art

[0002] Nowadays, the popularity of automobiles is getting higher and higher, and traffic accidents of freight trucks occur frequently, especially large casualties in the rear-end collisions of small motor vehicles with trucks. First, due to the defects in the rear protection design of many domestic trucks, in severe collisions, relying solely on the deformation of the protection crossbeam to absorb energy, the protection crossbeam is prone to fracture risk, with insufficient crashworthiness and unable to meet the regulatory requirements for anti-entrance. Second, although the protection systems of some trucks meet the regulatory requirements, there is a phenomenon that the protection devices are too rigid. In low-speed collisions, there is no buffer layer transition, causing greater damage to the rear-end vehicles; in high-speed collisions, the stiffness difference between the two vehicles is large, and collision compatibility cannot be achieved. The above two reasons result in excessive harm to small vehicles caused by trucks, a high probability of casualties, serious vehicle damage, inability to effectively absorb impact energy, and reduce the impact force. Summary of the Invention

[0003] To solve the problems in the above background art, the present invention provides an active warning energy-absorbing and buffering protection system, which has the functions of dual energy absorption and buffering and higher safety performance.

[0004] The present invention is realized through the following technical solutions:

[0005] An active warning energy-absorbing and buffering protection system includes an integrated protection crossbeam assembly, at least one connecting bracket, at least one damper, at least one monitoring system, and a data processing and control system. The connecting bracket is fixedly arranged on the vehicle frame. The shaft end of the damper is connected to the protection crossbeam assembly, and the housing is connected to the connecting bracket. The protection crossbeam assembly is rotatably connected to the connecting bracket. A pre-torsion member is arranged between the protection crossbeam assembly and the connecting bracket. The monitoring system is arranged at the rear end of the vehicle frame for monitoring the information data of the rear vehicle. The data processing system is electrically connected to the damper and the monitoring system, and is used to receive the information data and control the limit state of the damper according to the information data.

[0006] As a further description of the invention: The integrated protection crossbeam assembly includes at least one crossbeam connecting arm, a crossbeam main body, an energy-absorbing layer, and an outer cover. The crossbeam main body is fixedly connected to the crossbeam connecting arm. The energy-absorbing layer is arranged on the crossbeam main body. The outer cover is arranged on the energy-absorbing layer. The crossbeam connecting arm is rotatably connected to the connecting bracket. The shaft end of the damper is fixedly connected to the crossbeam connecting arm.

[0007] As a further description of the invention: Connecting strips are provided on both sides of the outer cover, the connecting strips are fixedly connected to the crossbeam main body, and the crossbeam main body and the outer cover wrap the energy absorption layer.

[0008] As a further description of the invention: The energy absorption layer is made of geometric gel material.

[0009] As a further description of the invention: A rotating groove is provided on the connecting bracket, and one end of the crossbeam connecting arm is located in the rotating groove and is rotatably connected to the connecting bracket.

[0010] As a further description of the invention: A connecting hole is provided on the crossbeam connecting arm, a first pin shaft is fixedly arranged in the connecting hole, the first pin shaft penetrates through the side wall of the connecting bracket and is fixedly connected to the shaft end of the damper, and the first pin shaft is fixedly connected to the crossbeam connecting arm.

[0011] As a further description of the invention: The first pin shaft is fixedly connected with a second pin shaft, the second pin shaft penetrates through the side wall of the connecting bracket and is rotatably connected to the connecting bracket, one end of the pre-torsion member is fixedly connected to the connecting bracket, and the other end is fixedly connected to the second pin shaft.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] 1. The monitoring system collects information data of the vehicle behind, and the data processing and control system processes the collected information such as vehicle type, vehicle speed, and vehicle distance in real time. When it is predicted that a collision accident will occur, a warning notice will be sent to the driver. At the same time, the damper unloads the initial torque, and the pre-torsion member pops out the integrated protection crossbeam to the initial limit state. The data processing and control system analyzes and processes the information such as the speed and mass of the vehicle behind, evaluates the collision impact force, and adaptively adjusts the resistance of the magnetorheological rotary damper to achieve the compatibility matching between the damping force and the impact force of the vehicle colliding from behind, forming a primary energy absorption buffer to reduce the rear-end collision force. Under the continuous action of the collision force, the protection crossbeam rotates and retreats to the locked limit state. If the impact force still has not completely subsided, at this time, the damper reaches the maximum stroke and locks the crossbeam and the support, and the integrated protection crossbeam assembly further absorbs the impact energy to achieve a secondary energy absorption buffer, with higher safety performance.

[0014] 2. The energy absorption layer is made of geometric material, and the geometric gel material is a high strain rate material, which quickly absorbs energy and hardens under high-speed collision, disperses the reduced impact force to the protection crossbeam, effectively reduces the deformation and fracture caused by excessive local stress on the crossbeam, and acts together with the crossbeam main body to prevent the rear-end vehicle from drilling under the vehicle, further improving the safety performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is the explosion diagram of the structure of the present invention.

[0017] Figure 3 This is the right view of the overall structure of the present invention in the initial limit state.

[0018] Figure 4 This is the cross-sectional view of the C-C section of the present invention.

[0019] Figure 5 This is the right view of the overall structure of the present invention in the locked state.

[0020] Description of the reference numerals in the drawings

[0021] 1. Integrated protective crossbeam assembly; 11. Crossbeam main body; 12. Energy absorption layer; 13. Outer cover; 131. Connecting strip; 14. Crossbeam connecting arm; 2. Connecting bracket; 21. Rotating groove; 3. Damper; 4. Monitoring system; 5. First pin shaft; 6. Second pin shaft; 7. Torsion spring; 8. Data processing and control system. Detailed implementation manners

[0022] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] As Figures 1 to 5 shown, an active warning energy-absorbing and buffering protection system includes an integrated protection crossbeam assembly 1, at least one connection bracket 2, at least one damper 3, at least one monitoring system 4, and a data processing and control system 8. The connection bracket 2 is fixedly arranged on the vehicle frame. The shaft end of the damper 3 is connected to the protection crossbeam assembly, and the housing is connected to the connection bracket 2. The protection crossbeam assembly is rotatably connected to the connection bracket 2. A pre-torsion member is arranged between the protection crossbeam assembly and the connection bracket 2. The monitoring system 4 is arranged at the rear end of the vehicle frame for monitoring the information data of the vehicle behind. The data processing system is electrically connected to the damper 3 and the monitoring system 4, and is used to receive the information data and control the limiting state of the damper 3 according to the information data. In this embodiment, two connection brackets 2 are provided, the damper 3 is set as a magnetorheological rotary damper 3, and two corresponding connection brackets 2 are provided. The monitoring system 4 is set as a high-definition camera and a millimeter-wave radar detector. The monitoring system 4 is provided with three and evenly arranged on the rear beam of the vehicle frame. The data processing and control system 8 is an ECU controller.

[0027] The integrated protection crossbeam assembly 1 includes at least one crossbeam connecting arm 14, a crossbeam main body 11, an energy-absorbing layer 12, and an outer cover 13. The crossbeam main body 11 is fixedly connected to the crossbeam connecting arm 14. The energy-absorbing layer 12 is arranged on the crossbeam main body 11. The outer cover 13 is arranged on the energy-absorbing layer 12. The crossbeam connecting arm 14 is rotatably connected to the connection bracket 2. The shaft end of the damper 3 is fixedly connected to the crossbeam connecting arm 14. The energy-absorbing layer 12 is made of a geometric gel material. In this embodiment, two crossbeam connecting arms 14 corresponding to the connection brackets 2 are provided. The crossbeam main body 11 is a semi-cylindrical hollow aluminum alloy casting. The energy-absorbing layer 12 is attached to the arc surface of the crossbeam main body 11. The outer cover 13 is made of aluminum alloy.

[0028] Connection strips 131 are provided on both axial sides of the outer cover 13. The connection strips 131 are fixedly connected to the crossbeam main body 11. The crossbeam main body 11 and the outer cover 13 wrap the energy-absorbing layer 12. A rotating groove 21 is provided on the connection bracket 2. One end of the crossbeam connecting arm 14 is located in the rotating groove 21 and is rotatably connected to the connection bracket 2. In this embodiment, the connection strips 131 and the outer cover 13 are integrally provided and made of aluminum alloy. The connection strips 131 and the crossbeam main body 11 are fixedly connected by a plurality of screws.

[0029] The crossbeam connecting arm 14 is provided with a connecting hole, and a first pin shaft 5 is fixedly arranged in the connecting hole. The first pin shaft 5 penetrates through the side wall of the connecting bracket 2 and is fixedly connected to the shaft end of the damper 3, and the first pin shaft 5 is fixedly connected to the crossbeam connecting arm 14. The first pin shaft 5 is fixedly connected with a second pin shaft 6. The second pin shaft 6 penetrates through the side wall of the connecting bracket 2 and is rotatably connected to the connecting bracket 2. One end of the pre-torsion member is fixedly connected to the connecting bracket 2, and the other end is fixedly connected to the second pin shaft 6. In this embodiment, the first pin shaft 5 is key-connected to the crossbeam connecting arm 14. A square shaft hole is coaxially arranged at one end of the first pin shaft 5 close to the damper 3. The shaft of the damper 3 is inserted into the square shaft hole. The damper 3 is fixedly connected to the connecting bracket 2 by screws. The first pin shaft 5 and the second pin shaft 6 are coaxially and fixedly connected. The diameter of the second pin shaft 6 is smaller than that of the first pin shaft 5. The pre-torsion member is arranged as a torsion spring 7.

[0030] The working principle of the present invention is as follows:

[0031] The monitoring system collects the information data of the vehicle behind. The data processing and control system 8 processes the collected information such as vehicle type, vehicle speed, and vehicle distance in real time. When it is predicted that a collision accident will occur, a warning notice will be sent to the driver. At the same time, the magnetorheological rotary damper 3 unloads the initial torque, and the pre-torsioned spring pops the crossbeam to the initial limit state (i.e., Figure 5 the state), and the data processing and control system 8 analyzes and processes the information such as the speed and mass of the vehicle behind, evaluates the collision impact force, and adaptively adjusts the resistance of the magnetorheological rotary damper 3 to achieve the compatibility matching between the damping force and the impact force of the vehicle colliding from behind, forming a primary energy absorption and buffering to reduce the rear-end collision force. Under the continuous action of the collision force, the integrated protection crossbeam assembly 1 rotates back to the locked limit state ( Figure 3 the state described therein). If the impact force has not completely subsided, at this time, the magnetorheological rotary damper 3 locks the crossbeam and the support. The protection crossbeam assembly of the aluminum alloy crossbeam main body 11 integrated with the geometric gel energy absorption material plays a blocking role, further absorbing the impact energy, realizing the secondary energy absorption and buffering. At the same time, the geometric gel material is a high strain rate material, which quickly absorbs energy and hardens under high-speed collision, and disperses the reduced impact force to.

Claims

1. An active early warning energy-absorbing and buffering protection system, characterized in that: It includes an integrated protective crossbeam assembly (1), at least one connecting bracket (2), at least one damper (3), at least one monitoring system (4) and a data processing and control system (8). The connecting bracket (2) is fixedly arranged on the vehicle frame. The shaft end of the damper (3) is connected to the protective crossbeam assembly, and the housing is connected to the connecting bracket (2). The protective crossbeam assembly is rotatably connected to the connecting bracket (2). A pre-torsion member is arranged between the protective crossbeam assembly and the connecting bracket (2). The monitoring system (4) is arranged at the rear end of the vehicle frame to monitor the information data of the following vehicle. The data processing and control system (8) is electrically connected to the damper (3) and the monitoring system (4) to receive the information data and control the limiting state of the damper (3) according to the information data. The integrated protective crossbeam assembly (1) includes at least one crossbeam connecting arm (14), a crossbeam main body (11), an energy-absorbing layer (12) and an outer cover (13). The crossbeam main body (11) is fixedly connected to the crossbeam connecting arm (14). The energy-absorbing layer (12) is arranged on the crossbeam main body (11). The outer cover (13) is arranged on the energy-absorbing layer (12). The crossbeam connecting arm (14) is rotatably connected to the connecting bracket (2). The shaft end of the damper (3) is fixedly connected to the crossbeam connecting arm (14). A connecting hole is provided on the crossbeam connecting arm (14). A first pin shaft (5) is fixedly arranged in the connecting hole. The first pin shaft (5) penetrates through the side wall of the connecting bracket (2) and is fixedly connected to the shaft end of the damper (3). The first pin shaft (5) is fixedly connected to the crossbeam connecting arm (14). The first pin shaft (5) is fixedly connected to a second pin shaft (6). The second pin shaft (6) penetrates through the side wall of the connecting bracket (2) and is rotatably connected to the connecting bracket (2). One end of the pre-torsion member is fixedly connected to the connecting bracket (2), and the other end is fixedly connected to the second pin shaft (6).

2. The active early warning energy-absorbing and buffering protection system according to claim 1, characterized in that: Connecting strips (131) are provided on both sides of the outer cover (13). The connecting strips (131) are fixedly connected to the crossbeam main body (11). The crossbeam main body (11) and the outer cover (13) wrap the energy-absorbing layer (12).

3. The active early warning energy-absorbing and buffering protection system according to claim 1 or 2, characterized in that: The energy-absorbing layer (12) is made of a geometric gel material.

4. The active early warning energy-absorbing and buffering protection system according to claim 1, characterized in that: A rotating groove (21) is provided on the connecting bracket (2). One end of the crossbeam connecting arm (14) is located in the rotating groove (21) and is rotatably connected to the connecting bracket (2).

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