Vehicle body anti-collision structure, control method of vehicle body anti-collision structure and vehicle

Abstract

The invention discloses a vehicle body anti-collision structure and a control method of the vehicle body anti-collision structure. The front anti-collision beam is positioned on the front side of the longitudinal beam and is connected with the longitudinal beam; the force transmission mechanism is located on the outer side of the vehicle body of the longitudinal beam and arranged on the front anti-collision beam, the force transmission mechanism comprises a force transmission assembly and a driving assembly, the force transmission assembly is in transmission connection with the driving assembly, and the driving assembly is used for driving the force transmission assembly to rotate to be away from the longitudinal beam relative to the front anti-collision beam. In the low-speed collision process, under driving of the driving assembly, the force transmission assembly rotates in the direction away from the longitudinal beam and other structures (such as the trunk beam), the force transmission assembly is prevented from colliding with the structures such as the trunk beam, and the maintenance economical efficiency of the vehicle in the low-speed collision process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle body anti-collision structure, and a control method and method of the vehicle body anti-collision structure. Background Art

[0002] In the related technology, a force transmission mechanism is arranged on the front anti-collision beam so that a collision force transmission channel is formed between the force transmission mechanism and the longitudinal beam when the vehicle is in a high-speed offset collision. The longitudinal beam absorbs the collision energy to protect the passenger compartment. At the same time, the force transmission mechanism and the side of the front anti-collision beam provide the vehicle with a Y-direction support force, which is helpful for the vehicle to slide out of the rigid barrier in a 25% width offset collision of the frontal vehicle at 64km / h. At the same time, there is a spacing space between the collision force transmission end of the force transmission mechanism and the longitudinal beam, so that when the vehicle collides at a low speed, the force transmission mechanism and the longitudinal beam will not collide, thereby ensuring the economy of maintenance.

[0003] However, in a low-speed collision, the support structure on the anti-collision beam will still hit the joint between the trunk beam and the longitudinal beam. The space margin between the support block support structure and the longitudinal beam and the trunk beam is insufficient. In a low-speed collision, the support block can avoid the longitudinal beam, but cannot completely avoid the trunk beam, which will cause damage to the trunk beam and require multiple repairs. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vehicle body anti-collision structure, in which, when a low-speed collision occurs, the force transmission component is driven by the driving component to rotate in a direction away from the longitudinal beam and other structures (such as the trunk beam), thereby avoiding collision between the force transmission component and the trunk beam and other structures, thereby ensuring the maintenance economy of the vehicle when the vehicle crashes at a low speed.

[0005] The invention also proposes a method for a vehicle body anti-collision structure.

[0006] The present invention further provides a vehicle.

[0007] The vehicle body anti-collision structure according to the first aspect of the present invention comprises: a longitudinal beam; a front anti-collision beam, the front anti-collision beam being located in front of the longitudinal beam and being connected to the longitudinal beam; a force transmission mechanism, the force transmission mechanism being located on the vehicle body outer side of the longitudinal beam and being arranged on the front anti-collision beam, the force transmission mechanism comprising: a force transmission assembly and a drive assembly, the force transmission assembly being transmission-connected to the drive assembly, the drive assembly being used to drive the force transmission assembly to rotate relative to the front anti-collision beam to be away from the longitudinal beam.

[0008] According to the vehicle body anti-collision structure of an embodiment of the present invention, during a low-speed collision, under the drive of the driving assembly, the force transmission assembly can rotate from tilting inward to being parallel to the front-to-rear direction of the vehicle or tilting outward from front to rear, and the force transmission assembly rotates in a direction away from the longitudinal beam and other structures (such as the trunk beam), thereby avoiding collision between the force transmission assembly and structures such as the trunk beam, thereby ensuring the maintenance economy of the vehicle during a low-speed collision.

[0009] According to some embodiments of the present invention, the force transmission assembly includes: a first transmission member and a force transmission member, the force transmission member is connected to the first transmission member and moves synchronously with the transmission member, and the first transmission member is transmission-connected to the drive assembly.

[0010] According to some embodiments of the present invention, an avoidance portion is provided on the force transmission member, and the avoidance portion is located at a side where the force transmission member is connected to the front anti-collision beam, and is used for avoiding the front anti-collision beam during the rotation of the force transmission member.

[0011] According to some embodiments of the present invention, the driving assembly includes: a driving member and a second transmission member, the second transmission member is rotatably connected to the first transmission member, and the driving member is used to drive the second transmission member to move so as to drive the first transmission member to rotate.

[0012] According to some embodiments of the present invention, a first gear portion is disposed on the first transmission member, and a second gear portion is disposed on the second transmission member, and the first gear portion is meshed with the second gear portion.

[0013] According to some embodiments of the present invention, the force transmission assembly further includes: a rotating shaft, the rotating shaft is fixedly connected to the force transmission member, the rotating shaft is connected to the first transmission member and moves synchronously with the first transmission member.

[0014] According to some embodiments of the present invention, a first limiting portion is provided on the rotating shaft, a second limiting portion is provided on the first transmission member, and the first limiting portion and the second limiting portion are matched in limiting manner.

[0015] According to some embodiments of the present invention, a first mounting hole is provided on the force transmission member, and the rotating shaft passes through the first mounting hole and is fixedly connected to the force transmission member.

[0016] According to some embodiments of the present invention, the vehicle body anti-collision structure further includes: a lap plate, one end of which is fixedly connected to the front anti-collision beam, and the other end of which is rotatably connected to the rotating shaft.

[0017] The control method of the vehicle body anti-collision structure according to the first embodiment of the present invention is characterized by comprising the following steps: S1: The information collection device obtains the collision speed of the vehicle; S2: The controller obtains a preset speed and determines whether the collision speed is greater than or equal to the preset speed. If so, step S3 is executed; otherwise, step S4 is executed; S3: the force transmission component maintains an initial state; S4: The driving component drives the force transmission component to rotate a preset angle.

[0018] A vehicle according to an embodiment of the first aspect of the present invention includes: the vehicle body anti-collision structure.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a partial schematic diagram of a vehicle body anti-collision structure according to an embodiment of the present invention; Figure 2 is a schematic diagram of the connection between the front anti-collision beam and the force transmission mechanism according to an embodiment of the present invention; Figure 3 is a schematic diagram of the internal structure of a force transmission structure according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a first transmission member according to an embodiment of the present invention; Figure 5 is a schematic structural diagram of a force transmission member according to an embodiment of the present invention; Figure 6 is a schematic structural diagram of a force transmission component in an initial state according to an embodiment of the present invention; Figure 7 is an exemplary diagram of a force transmission assembly rotating away from a longitudinal beam according to an embodiment of the present invention; Figure 8 The invention relates to a control method for a vehicle body anti-collision mechanism according to an embodiment of the present invention.

[0021] Reference numerals: 100. Anti-collision structure of vehicle body; 11. Longitudinal beam; 12. Front anti-collision beam; 13. Trunk beam; 14. Energy absorption box body; 20. force transmission mechanism; 21. force transmission assembly; 211. first transmission member; 212. force transmission member; 213. first gear portion; 214. rotating shaft; 215. second limiting portion; 216. first mounting hole; 22. driving assembly; 221. second transmission member; 23. lap plate. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0023] Reference below Figure 1-Figure 7 A vehicle body anti-collision structure 100 according to an embodiment of the present invention is described, a method for a vehicle body anti-collision mechanism is also proposed, and a vehicle including the vehicle body anti-collision structure 100 is also proposed.

[0024] Combination Figure 1 , Figure 6 and Figure 7 As shown, the vehicle body anti-collision structure 100 includes: a longitudinal beam 11 and a front anti-collision beam 12, the front anti-collision beam 12 is located at the front side of the longitudinal beam 11, the longitudinal beam 11 is extended roughly along the front and rear directions of the vehicle body, the longitudinal beam 11 may include: a left longitudinal beam 11 located on the left side of the vehicle body and a right longitudinal beam 11 located on the right side of the vehicle body, and the front anti-collision beam 12 is respectively connected to the left longitudinal beam 11 located on the left side of the vehicle body and the right longitudinal beam 11 located on the right side of the vehicle body on both sides in the left and right directions of the vehicle body.

[0025] like Figure 1 , Figure 6 and Figure 7 As shown. An energy absorption box body 14 is provided between the front anti-collision beam 12 and the longitudinal beam 11, the front end of the energy absorption box body 14 is connected to the front anti-collision beam 12, and the rear end of the energy absorption box body 14 is connected to the longitudinal beam 11. There can be two energy absorption box bodies 14, and the two energy absorption box bodies 14 are respectively connected between the front anti-collision beam 12 and the left longitudinal beam 11 and the right longitudinal beam 11. In the front-to-back direction, the energy absorption box assembly is connected between the front anti-collision beam 12 and the longitudinal beam 11, and the longitudinal beam 11 extends along the front-to-back direction. The energy absorption box body 14 and the front longitudinal beam 11 are arranged correspondingly in the front-to-back direction to form a collision force transmission path that can be transmitted to the vehicle body.

[0026] In some embodiments, the energy absorption box body 14 includes an upper energy absorption box and a lower energy absorption box, the upper energy absorption box and the lower energy absorption box are connected, and the upper energy absorption box is located above the lower energy absorption box, and the upper energy absorption box and the lower energy absorption box jointly define a first cavity, so that the energy absorption box body 14 forms a collision force transmission channel.

[0027] The vehicle body anti-collision structure 100 also includes: a force transmission mechanism 20, which is located on the vehicle body outer side of the longitudinal beam 11. The force transmission mechanism 20 is located on the vehicle body outer side of the longitudinal beam 11. The so-called vehicle body outer side means that if the longitudinal beam 11 is the longitudinal beam 11 on the left side of the vehicle body, then the corresponding force transmission mechanism 20 is located on the vehicle body left side of the longitudinal beam 11. If the longitudinal beam 11 is the longitudinal beam 11 on the right side of the vehicle body, then the corresponding force transmission mechanism 20 is located on the vehicle body right side of the longitudinal beam 11.

[0028] The force transmission mechanism 20 is arranged on the front anti-collision beam 12, and there is a certain spacing space between the force transmission mechanism 20 and the longitudinal beam 11. The force transmission mechanism 20 is connected to the front anti-collision beam 12. When the front anti-collision beam 12 is hit at high speed, the longitudinal beam 11, the front anti-collision beam 12 or other structures are deformed, causing the force transmission mechanism 20 to collide with the longitudinal beam 11 and other structures. Therefore, a collision force transmission channel is formed between the force transmission mechanism 20 and the longitudinal beam 11 and other structures, which is convenient for the longitudinal beam 11 and other structures to absorb collision energy.

[0029] At the same time, the force transmission mechanism 20 can enhance the rigidity of the front anti-collision beam 12 on the side where the force transmission mechanism 20 is installed. Therefore, the force transmission mechanism 20 and the side of the front anti-collision beam 12 provide the vehicle with a Y-direction (i.e., the left and right directions of the vehicle body) supporting force, which is beneficial for the vehicle to slide out of the rigid barrier and reduce the force borne by the passenger compartment.

[0030] The force transmission mechanism 20 has overlapping parts with the longitudinal beam 11 and other structures in the Z direction of the vehicle body. Otherwise, when the vehicle collides at a high speed, the force transmission mechanism 20 cannot collide with the longitudinal beam 11 to transmit force.

[0031] By arranging the force transmission mechanism 20 on the front anti-collision beam 12, the force transmission mechanism 20 and the longitudinal beam 11 form a collision force transmission channel when the vehicle is in a high-speed offset collision. The longitudinal beam 11 absorbs the collision energy to protect the passenger compartment. At the same time, the force transmission mechanism 20 and the side of the front anti-collision beam 12 provide a Y-direction support force for the vehicle. like Figure 2-Figure 3 As shown, the force transmission mechanism 20 includes: a force transmission component 21 and a driving component 22, the force transmission component 21 is in transmission connection with the driving component 22, and the driving component 22 is used to drive the force transmission component 21 to rotate relative to the front anti-collision beam 12 to move away from the longitudinal beam 11. Specifically, when the force transmission component 21 is in the initial state, the force transmission component 21 is tilted relative to the front and rear direction of the vehicle, and the force transmission component 21 is tilted from the front to the back and from the outside to the inside, so as to ensure that when the vehicle collides at high speed, the force transmission component 21 can collide with the longitudinal beam 11 to form a collision force transmission channel. The rotation direction of the force transmission component 21 is not restricted, and the force transmission component 21 can rotate clockwise or counterclockwise.

[0032] The driving assembly 22 can be arranged in the front anti-collision beam 12, and the driving assembly 22 is in transmission connection with the force transmission assembly 21. In the case of a high-speed collision, the force transmission assembly 21 maintains the initial state, that is, the force transmission assembly 21 is tilted from the outside to the inside from the front to the back, so that the force transmission assembly 21 forms a collision force transmission channel with the longitudinal beam 11 in a high-speed offset collision.

[0033] During a low-speed collision, there is no need to form a collision force transmission channel between the force transmission component 21 and the longitudinal beam 11. The front anti-collision beam 12 and the longitudinal beam 11 themselves can absorb the collision energy. Since there is a gap between the force transmission component 21 and the longitudinal beam 11, there will be no collision between the force transmission component 21 and the longitudinal beam 11. However, it is unavoidable that the force transmission component 21 will collide with structures such as the trunk beam 13.

[0034] Therefore, during a low-speed collision, under the drive of the driving assembly 22, the force transmission assembly 21 can rotate from tilting inward to being parallel to the front-to-rear direction of the vehicle or tilting outward from front to rear, and the force transmission assembly 21 rotates in a direction away from the longitudinal beam 11 and other structures (such as the trunk beam 13), thereby avoiding collision between the force transmission assembly 21 and structures such as the trunk beam 13, thereby ensuring the maintenance economy of the vehicle during a low-speed collision.

[0035] In some embodiments, the drive assembly 22 may be a drive motor, and the drive motor is vertically mounted on the front anti-collision beam 12, and the drive shaft of the drive motor is connected to the force transmission member 212, and the drive motor can directly drive the force transmission member 212 to rotate. The location and form of the drive motor installation are not limited to the front anti-collision beam 12 or the longitudinal beam 11.

[0036] The driving assembly 22 includes but is not limited to an electric driving device, and may also be pneumatically controlled or hydraulically controlled.

[0037] Combination Figure 1-Figure 5 As shown, the force transmission component 21 includes: a first transmission member 211 and a force transmission member 212, the force transmission member 212 is connected to the first transmission member 211 and moves synchronously with the transmission member, and the first transmission member 211 is transmission-connected to the driving component 22. Specifically, the force transmission member 212 is connected to the first transmission member 211, and the driving component 22 can drive the first transmission member 211 to rotate, so as to drive the force transmission member 212 to rotate. When the transmission component is in the initial state, the force transmission member 212 is tilted relative to the longitudinal beam 11. When the front bumper beam 12 is hit at a high speed, the longitudinal beam 11, the front bumper beam 12 or other structures are deformed, and the force transmission member 212 can collide with the longitudinal beam 11 and other structures. Therefore, a collision force transmission channel is formed between the force transmission mechanism 20 and the longitudinal beam 11 and other structures, which is convenient for the longitudinal beam 11 and other structures to absorb collision energy.

[0038] Therefore, during a low-speed collision, under the drive of the driving assembly 22, the first transmission member 211 rotates, driving the force transmission member 212 to rotate from an inward tilt to a direction parallel to the front-to-rear direction of the vehicle or tilted outward from front to rear, and the force transmission member 212 rotates in a direction away from the longitudinal beam 11 and other structures (such as the trunk beam 13), thereby avoiding collision between the force transmission assembly 21 and structures such as the trunk beam 13, thereby ensuring the maintenance economy of the vehicle during a low-speed collision.

[0039] The force transmission member 212 may be a hexahedral structure with a trapezoidal cross section, or may be a cuboid, a cylinder, a fan-shaped structure, a hemispherical structure or other equivalent structural shapes. The size of the force transmission member 212 may be adjusted according to actual needs.

[0040] The force transmission member 212 is provided with an avoidance portion, which is located at the side where the force transmission member 212 is connected to the front anti-collision beam 12, and is used to avoid the front anti-collision beam 12 during the rotation of the force transmission member 212. In this way, a gap is reserved for the rotation space of the force transmission member 212 to prevent the force transmission member 212 from hitting the front anti-collision beam 12 during the rotation. The avoidance portion can be a straight cut or an arc cut.

[0041] In order to ensure that the force transmission member 212 has a certain Y-direction force transmission capability, the internal sheet metal components of the force transmission member 212 are connected by welding technology.

[0042] The driving assembly 22 includes: a driving member and a second transmission member 221, the second transmission member 221 is rotatably connected to the first transmission member 211, and the driving member is used to drive the second transmission member 221 to move, so as to drive the first transmission member 211 to rotate. Specifically, the driving member can be a driving motor. The location and form of the driving motor installation are not limited to the front anti-collision beam 12 or the longitudinal beam 11.

[0043] The driving member is connected to the second transmission member 221, the first transmission member 211 is connected to the second transmission member 221, the second transmission member 221 is connected between the driving member and the first transmission member 211, and under the drive of the driving member, the second transmission member 221 moves, driving the first transmission member 211 to rotate, and the force transmission member 212 also rotates.

[0044] In some embodiments, the second transmission member 221 can be a worm, and the first transmission member 211 can be a turbine. The turbine and the worm are meshed with each other. The unidirectional motion characteristics of the turbine and the worm prevent the turbine from driving the force transmission member 212 to rotate, thereby achieving the fixation of the force transmission member 212 after the rotation is completed, and reserving sufficient spacing space between the force transmission member 212 and the longitudinal beam 11 and the trunk beam 13.

[0045] The first transmission member 211 is provided with a first gear portion 213, and the second transmission member 221 is provided with a second gear portion, and the first gear portion 213 meshes with the second gear portion. Specifically, the first transmission member 211 is provided with a first gear portion 213, and the first gear portion 213 includes a plurality of teeth, and the plurality of teeth can be arranged in an arc shape, so that when the second transmission member 221 moves, the first transmission member 211 is driven to rotate, thereby driving the force transmission member 212 to rotate, so that the force transmission member 212 rotates in a direction away from the longitudinal beam 11 and other structures (such as the trunk beam 13), avoiding collision between the force transmission component 21 and structures such as the trunk beam 13, and ensuring the maintenance economy of the vehicle during a low-speed collision.

[0046] like Figure 3 As shown, the force transmission assembly 21 further includes: a rotating shaft 214, the rotating shaft 214 is fixedly connected to the force transmission member 212, and the rotating shaft 214 is connected to the first transmission member 211 and moves synchronously with the first transmission member 211. Specifically, the force transmission member 212 is fixedly connected to the rotating shaft 214, and the force transmission member 212 moves synchronously with the rotating shaft 214. The rotating shaft 214 is connected to the first transmission member 211 and moves synchronously, and the force transmission member 212 moves synchronously with the first transmission member 211.

[0047] like Figure 4 As shown, the rotating shaft 214 is provided with a first limiting portion, and the first transmission member 211 is provided with a second limiting portion 215, and the first limiting portion and the second limiting portion 215 are limitedly matched. The rotating shaft 214 and the first transmission member 211 can be connected by a flat key to ensure that the rotational motion of the first transmission member 211 can be transmitted to the rotating shaft 214.

[0048] Combination Figure 5 As shown, the force transmission member 212 is provided with a first mounting hole 216, and the rotating shaft 214 is fixedly connected to the force transmission member 212 after passing through the first mounting hole 216. Specifically, the first mounting hole 216 can be provided on both the upper side and the lower side of the force transmission member 212, and the rotating shaft 214 is fixedly connected to the force transmission member 212 after passing through the first mounting hole 216, so as to ensure the connection reliability between the force transmission member 212 and the rotating shaft 214.

[0049] The vehicle body anti-collision structure 100 further includes: a lap plate 23, one end of which is fixedly connected to the front anti-collision beam 12, and the other end of which is rotatably connected to the rotating shaft 214. Specifically, there can be two lap plates 23, and the two lap plates 23 are respectively arranged on the upper side and the lower side of the force transmission member 212, the upper lap plate 23 is rotatably connected to the upper end of the rotating shaft 214, and the lower lap plate 23 is rotatably connected to the lower end of the rotating shaft 214, and the two lap plates 23 are connected between the rotating shaft 214 and the front anti-collision beam 12 to ensure the structural stability of the rotating shaft 214, and to prevent the rotating shaft 214 from being deformed and skewed when the force transmission member 212 collides with structures such as the longitudinal beam 11.

[0050] like Figure 8 As shown, the control method of the vehicle body anti-collision structure 100 according to the second embodiment of the present invention includes the following steps: S1: The information collection device obtains the collision speed of the vehicle.

[0051] The information collection device may include: a collision sensor and a vehicle speed sensor. The collision sensor is used to sense whether a vehicle collides, and the vehicle speed sensor is used to measure the collision speed of the vehicle when it collides.

[0052] S2: The controller obtains a preset speed and determines whether the collision speed is greater than or equal to the preset speed. If so, execute step S3; otherwise, execute step S4.

[0053] The operator can set the collision speed of the vehicle according to the actual situation, and the controller can obtain the preset speed and compare the collision speed with the preset speed. If the collision speed is greater than or equal to the preset speed, step S3 is executed; if the collision speed is less than the preset speed, step S4 is executed.

[0054] For example, the preset speed may be 30 km / h. When the collision sensor senses a vehicle collision, if the collision speed is ≥ 30 km / h, step S3 is executed; if the collision speed is < 30 km / h, step S4 is executed.

[0055] S3: The force transmission component 21 maintains the initial state.

[0056] When the collision sensor senses a vehicle collision, after the collision speed is greater than or equal to the preset speed, the force transmission component 21 is kept in the initial state, the force transmission component 21 tilts inward from front to back, and the force transmission component 21 forms a certain angle with the longitudinal direction of the vehicle. The high-speed offset force transmission component 21 can form a collision force transmission channel with the longitudinal beam 11, which is convenient for the longitudinal beam 11 to absorb the collision energy.

[0057] S4: The driving component 22 drives the force transmission component 21 to rotate a preset angle.

[0058] When the controller determines that the collision speed is less than the preset speed, the driving component 22 drives the force transmission component 21 to rotate by a preset angle in a direction away from the trunk bridge 13, so as to avoid hitting the trunk bridge 13 in a low-speed collision.

[0059] The vehicle according to the third embodiment of the present invention comprises: a vehicle body anti-collision structure 100. A force transmission component 21 with an adjustable angle is arranged at the edge of the front anti-collision beam 12. In a high-speed collision, the force transmission component 21 can form a collision force transmission channel with the longitudinal beam 11 and other structures, and provide Y-direction support force in a high-speed offset collision; in a low-speed collision, the force transmission component 21 rotates away from the longitudinal beam 11 and the trunk beam 13, so as to ensure the maintenance economy of the vehicle in a low-speed collision.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 representation of the above terms does not necessarily refer to the same embodiment or example.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle body anti-collision structure, characterized in that: include: Stringer (11); A front anti-collision beam (12), the front anti-collision beam (12) being located at the front side of the longitudinal beam (11) and connected to the longitudinal beam (11); A force transmission mechanism (20), the force transmission mechanism (20) being located on the vehicle body outer side of the longitudinal beam (11) and being arranged on the front anti-collision beam (12), the force transmission mechanism (20) comprising: a force transmission component (21) and a drive component (22), the force transmission component (21) being transmission-connected to the drive component (22), the drive component (22) being used to drive the force transmission component (21) to rotate relative to the front anti-collision beam (12) to be away from the longitudinal beam (11).

2. The vehicle body anti-collision structure according to claim 1, characterized in that: The force transmission component (21) comprises: a first transmission member (211) and a force transmission member (212); the force transmission member (212) is connected to the first transmission member (211) and moves synchronously with the transmission member; the first transmission member (211) is in transmission connection with the drive component (22).

3. The vehicle body anti-collision structure according to claim 2, characterized in that: The force transmission member (212) is provided with an avoidance portion, the avoidance portion being located at a side where the force transmission member (212) is connected to the front anti-collision beam (12), and being used for avoiding the front anti-collision beam (12) during the rotation of the force transmission member (212).

4. The vehicle body anti-collision structure according to claim 2, characterized in that: The driving assembly (22) comprises: a driving member and a second transmission member (221), the second transmission member (221) being rotationally connected to the first transmission member (211), the driving member being used to drive the second transmission member (221) to move, thereby driving the first transmission member (211) to rotate.

5. The vehicle body anti-collision structure according to claim 4, characterized in that: The first transmission member (211) is provided with a first gear portion (213), the second transmission member (221) is provided with a second gear portion, and the first gear portion (213) is meshed with the second gear portion.

6. The vehicle body anti-collision structure according to claim 2, characterized in that: The force transmission component (21) further comprises: a rotating shaft (214), the rotating shaft (214) being fixedly connected to the force transmission member (212), the rotating shaft (214) being connected to the first transmission member (211) and moving synchronously with the first transmission member (211).

7. The vehicle body anti-collision structure according to claim 6, characterized in that: The rotating shaft (214) is provided with a first limiting portion, and the first transmission member (211) is provided with a second limiting portion (215), and the first limiting portion and the second limiting portion (215) are matched in limiting manner.

8. The vehicle body anti-collision structure according to claim 6, characterized in that: The force transmission member (212) is provided with a first mounting hole (216), and the rotating shaft (214) is fixedly connected to the force transmission member (212) after passing through the first mounting hole (216).

9. The vehicle body anti-collision structure according to claim 6, characterized in that: Also includes: A lap plate (23), one end of the lap plate (23) being fixedly connected to the front anti-collision beam (12), and the other end of the lap plate (23) being rotationally connected to the rotating shaft (214).

10. A control method for a vehicle body anti-collision structure according to any one of claims 1 to 9, characterized in that: Includes: The following step: S1: The information collection device obtains the collision speed of the vehicle; S2: The controller obtains a preset speed and determines whether the collision speed is greater than or equal to the preset speed. If so, step S3 is executed; otherwise, step S4 is executed; S3: the force transmission component (21) maintains an initial state; S4: the driving component (22) drives the force transmission component (21) to rotate at a preset angle.

11. A vehicle, characterized in that: include: The vehicle body anti-collision structure (100) according to any one of claims 1 to 9.

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