Automobile collision test device

Abstract

The present application relates to a car collision test device, which belongs to the technical field of collision test devices. The collision test device of the present application includes a transmission mechanism and a switching mechanism. The transmission mechanism is arranged on a bottom plate and is used to drive the vehicle under test. The transmission mechanism includes at least two groups of chain transmission mechanisms and a power device that drives at least two groups of the chain transmission mechanisms to rotate; the switching mechanism is rotationally connected between the power device and at least two groups of the chain transmission mechanisms, and the switching mechanism is provided with a switching component that is combined with or disengaged from any of the chain transmission mechanisms. In use, at least two groups of chain transmission mechanisms can respectively drive at least two vehicles to move and collide with the collision device, simulating the situation of a chain collision of vehicles in real life, so as to collect relevant data during a chain collision of vehicles, which is beneficial to the research and development of automobiles.

Description

Technical Field

[0001] The present application relates to the technical field of collision test devices, and in particular to a vehicle collision test device. Background Art

[0002] The automobile collision test device is a device used to test the collision safety performance of automobiles. It is mainly composed of a vehicle impact zone, a vehicle support system, a data acquisition system, etc. In the test, the test vehicle is accelerated to a certain speed and then hits the obstacle in the impact zone to simulate a real vehicle collision. Existing collision test devices generally adopt a single-vehicle collision structure, in which the vehicle support acceleration device can only connect one vehicle in a single test, and it is impossible to test a chain vehicle collision. Therefore, it is necessary to design a collision test device to simulate the situation of a car chain collision. Summary of the invention

[0003] The embodiment of the present application provides a vehicle collision test device to solve the problem in the related art that the vehicle collision test device can only simulate a single vehicle collision.

[0004] The present application provides a vehicle collision test device, comprising:

[0005] A transmission mechanism, which is arranged on the bottom plate and is used to drive the vehicle under test, and the transmission mechanism includes at least two groups of chain transmission mechanisms and a power device for driving the at least two groups of chain transmission mechanisms to rotate;

[0006] A switching mechanism is rotatably connected between the power device and at least two groups of the chain transmission mechanisms, and the switching mechanism is provided with a switching component for engaging with or disengaging from any of the chain transmission mechanisms.

[0007] In some embodiments, a mounting groove is provided on the bottom plate, the chain transmission mechanism is arranged in the mounting groove, and the top surface of the chain transmission mechanism is lower than the top surface of the bottom plate;

[0008] Each group of the chain transmission mechanism includes a plurality of sprocket groups installed in the installation grooves, each sprocket group includes two sprockets, and a chain is sleeved between the two sprockets of each sprocket group.

[0009] In some embodiments, two switching components are symmetrically arranged, each of which includes a rotating shaft connected to the power device and a transmission shaft connected to the chain transmission mechanism, and a switching member is arranged between the rotating shaft and the transmission shaft, and the switching member is used to transmit the power of the rotating shaft to the transmission shaft.

[0010] In some embodiments, the rotating shaft and the transmission shaft are hollow structures, the switching member is a slider, and an elastic member is provided at one end of the slider close to the rotating shaft for enabling the slider to slide within the rotating shaft and the transmission shaft.

[0011] In some embodiments, a partition block is provided between the two switching components. Electromagnets are provided at both ends of the partition block, and a control brush electrically connected to the power device and the electromagnets is provided on the partition block. A metal member is provided at one end of the switching member close to the electromagnet.

[0012] In some embodiments, the switching mechanism further includes a first gear provided on the switching component and a second gear fixed to the sprocket, and the first gear is in meshing transmission with the second gear.

[0013] In some embodiments, the power device is a driving motor, and one end of the driving motor is connected to the rotating shaft through a belt.

[0014] In some embodiments, a plurality of fixing members for fixing the vehicle to be measured are provided at intervals along the length direction on the conveying mechanism. The fixing members include connecting blocks fixed to the chain transmission mechanism. A threaded tube is provided on the connecting block, and a hook seat and a hook are sequentially connected to the threaded tube. The hook is used for fixing the vehicle to be measured.

[0015] In some embodiments, a collision mechanism is provided at one end of the bottom plate. The collision mechanism is in a "C" shape and includes a vertical plate and two horizontal plates respectively vertically provided at both ends of the vertical plate. A blocking device is provided on the horizontal plate for blocking the vehicle to be measured.

[0016] In some embodiments, a plurality of columns for fixing the blocking device are provided on the horizontal plate, and threaded connection grooves are provided on the columns;

[0017] The blocking device includes a plurality of sequentially connected blocking members. An opening matching the column is provided in the blocking member. The blocking member can be sleeved on the column, and a plurality of the blocking members can be fixed by bolts. A plurality of inclined support rods are provided between the blocking member and the vertical plate.

[0018] The beneficial effects brought by the technical solution provided by this application include:

[0019] An embodiment of the present application provides a vehicle collision test device. Since the collision test device of the present application includes a transmission mechanism and a switching mechanism, the transmission mechanism is arranged on a base plate and is used to drive the vehicle under test. The transmission mechanism includes at least two groups of chain transmission mechanisms and a power device that drives at least two groups of the chain transmission mechanisms to rotate; the switching mechanism is rotationally connected between the power device and at least two groups of the chain transmission mechanisms, and the switching mechanism is provided with a switching component that engages or disengages from any of the chain transmission mechanisms.

[0020] In use, at least two groups of chain transmission mechanisms can respectively drive at least two vehicles to move and collide with the collision device, simulating the situation of multiple vehicles in chain collision in real life, so as to collect relevant data of car chain collision, which is beneficial to the research and development of automobiles. The switching mechanism is rotatably connected between the power device and at least two groups of chain transmission mechanisms, and can switch and control multiple groups of chain transmission mechanisms to switch and control multiple connected vehicles when only one set of power device is used. That is, a certain vehicle can be controlled individually, and the movement of multiple vehicles can also be controlled at the same time, which is convenient for simulating the actual situation of car chain collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of the device structure provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 Structural schematic diagram of the transmission mechanism and the switching mechanism;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of the switching mechanism;

[0025] Figure 4 for Figure 3 A cross-sectional view of

[0026] Figure 5 for Figure 3 A cross-sectional view of the switching assembly;

[0027] Figure 6 for Figure 1 A schematic diagram of the structure of the fixing parts;

[0028] Figure 7 for Figure 6 A cross-sectional view of

[0029] Figure 8 for Figure 1 Structural diagram of the collision mechanism;

[0030] Fig. 9 for Figure 8 sectional view of .

[0031] Reference numerals:

[0032] 1. Bottom plate; 2. Transmission mechanism; 3. Switching mechanism; 4. Collision mechanism; 5. Power device; 6. Control brush; 7. Oblique support rod; 8. Turning belt; 31. Switching assembly; 32. First gear; 33. Second gear; 40. Vertical plate; 41. Horizontal plate; 71. Reinforced connecting rod; 101. Mounting groove; 102. Connecting shaft; 103. One-way bearing; 201. Sprocket; 202. Chain; 204. Fixing piece; 30 1. Rotating shaft; 302. Switching member; 304. Transmission shaft; 305. Connecting groove; 402. Blocking member; 702. Fixing groove; 2031. Connecting block; 2032. Threaded pipe; 2041. Plug-in block; 2042. Hook seat; 2043. Bolt; 2044. Hook; 3011. Socket; 3031. Separating block; 3032. Electromagnet; 3033. Elastic member; 4011. Column; 4025. Plug-in column. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] The embodiment of the present application provides a car collision test device, which can solve the problem in the related art that the car collision test device can only simulate a single-car collision.

[0035] See also Figures 1 to 5 As shown, an embodiment of the present application provides a vehicle collision test device, including a transmission mechanism 2 and a switching mechanism 3. The transmission mechanism 2 is arranged on a base plate 1 and is used to drive the vehicle under test. The transmission mechanism 2 includes at least two groups of chain 202 transmission mechanisms, and a power device 5 that drives at least two groups of chain 202 transmission mechanisms to rotate; the switching mechanism 3 is rotationally connected between the power device 5 and at least two groups of chain 202 transmission mechanisms, and a switching component 31 that is coupled to or disengaged from any chain 202 transmission mechanism is provided on the switching mechanism 3.

[0036] In use, at least two groups of chain 202 transmission mechanisms can respectively drive at least two vehicles to move and collide with the collision device, simulating the situation of multiple vehicles having a chain collision in real life, so as to collect relevant data when the vehicles are in a chain collision, which is beneficial to the research and development of the vehicle. The switching mechanism 3 is rotatably connected between the power device 5 and at least two groups of chain 202 transmission mechanisms, and can switch and control multiple groups of chain 202 transmission mechanisms when only one set of power device 5 is used, so as to switch and control multiple connected vehicles. That is, a certain vehicle can be controlled individually, and the movement of multiple vehicles can also be controlled at the same time, which is convenient for simulating the actual situation of a chain collision of vehicles.

[0037] In some alternative embodiments, see Figure 1 and Figure 2 As shown, an embodiment of the present application provides a car collision test device, a mounting groove 101 is opened on the base plate 1 of the collision test device, a chain 202 transmission mechanism is arranged in the mounting groove 101, and the top surface height of the chain 202 transmission mechanism is lower than the top surface of the base plate 1; each group of chain 202 transmission mechanisms includes a plurality of sprocket 201 groups installed in the mounting groove 101, each sprocket 201 group includes two sprockets 201, and a chain 202 is sleeved between the two sprockets 201 of each sprocket 201 group.

[0038] like Figure 1 As shown, a mounting groove 101 is opened on the bottom plate 1, and a chain 202 transmission mechanism is arranged in the mounting groove 101, and the top surface height of the chain 202 transmission mechanism is lower than the top surface of the bottom plate 1. When the car moves on the top surface of the bottom plate 1, the top surface height of the chain 202 transmission mechanism is lower than the top surface of the bottom plate 1, so that when the chain 202 transmission mechanism drives the vehicle to move, the movement of the vehicle is prevented from being disturbed.

[0039] Each chain 202 transmission mechanism includes a plurality of sprockets 201 installed in the installation slot 101, each sprocket 201 group includes two sprockets 201, and a chain 202 is sleeved between the two sprockets 201 of each sprocket 201 group. In actual use, the plurality of sprockets 201 groups are parallel to each other, and each sprocket 201 group is located on a vertical plane, and the two sprockets 201 are located at both ends of the chain 202, and each chain 202 drives a vehicle to move. Specifically, when one of the sprockets 201 groups drives the front vehicle to move to a specified position and collides with the collision area of ​​the test device, the other sprocket 201 group can drive the rear vehicle to move toward the specified position and collide with the front vehicle to simulate a chain collision.

[0040] In some alternative embodiments, see Figures 2 to 5As shown, an embodiment of the present application provides a vehicle collision test device, wherein two switching components 31 are symmetrically arranged, each switching component 31 includes a rotating shaft 301 connected to a power device 5, and a transmission shaft 304 connected to a chain 202 transmission mechanism, and a switching member 302 is arranged between the rotating shaft 301 and the transmission shaft 304, and the switching member 302 is used to transmit the power of the rotating shaft 301 to the transmission shaft 304.

[0041] The power device 5 can provide power to the transmission shaft 304, and then transmit the power of the rotating shaft 301 to the transmission shaft 304 through the switching member 302, so as to achieve the purpose of switching.

[0042] In actual use, the rotating shaft 301 and the transmission shaft 304 are hollow structures, the switching member 302 is a slider, and an elastic member 3033 is provided at one end of the slider close to the rotating shaft 301 for making the slider slide inside the rotating shaft 301 and the transmission shaft 304 .

[0043] A partition block 3031 is provided between the two switching components 31 , electromagnets 3032 are provided at both ends of the partition block 3031 , and a control brush 6 electrically connected to the power device 5 and the electromagnet 3032 is provided on the partition block 3031 , and a metal part is provided at one end of the switching member 302 close to the electromagnet 3032 .

[0044] The switching mechanism 3 also includes a first gear 32 arranged on the switching assembly 31, and a second gear 33 fixed to the sprocket 201, and the first gear 32 is meshed and transmitted to the second gear 33. In actual use, the second gear 33 and the sprocket 201 are coaxially fixed through the connecting shaft 102. The sprocket 201 is rotatably sleeved on the connecting shaft 102 through a one-way bearing 103, wherein the one-way bearing 103 can limit the sprocket 201 and the chain 202 to only drive the vehicle to move toward the side where the blocking device is located, and when the driving force is switched to the transmission shaft 304 for rotation through the switching member 302 slider, the driving force needs to slow down the rotation. The one-way bearing 103 can be used to slow down the rotation without affecting the rotation of the sprocket 201 connected to the transmission shaft 304, so the vehicle can continue to move toward the blocking device through inertia, and the vehicle's forward movement will not be disturbed due to the switching of the transmission, thereby ensuring the smooth operation of the device.

[0045] The power device 5 is a driving motor, one end of which is connected to the rotating shaft 301 through a belt 8 .

[0046] Specifically, Figure 3 As shown, the power device 5 drives the motor to provide power, driving the shaft at one end of the drive motor to rotate, and the shaft drives the rotating shaft 301 of the switching component 31 to rotate through the belt 8. At this time, as shown in FIG. Figure 4 and Figure 5As shown, if the slider of the switching member 302 is located inside the rotating shaft 301, the rotating shaft 301 will not transmit power to the transmission shaft 304, that is, the transmission shaft 304 will not rotate, and the first gear 32 fixed outside the transmission shaft 304 will not rotate, so the second gear 33 and the sprocket 201 fixed to the second gear 33 will not rotate, that is, the vehicle will not be driven to move at this time.

[0047] like Figure 1 As shown, a mounting groove 101 is opened on the bottom plate 1, and a chain 202 transmission mechanism is arranged in the mounting groove 101, and the top surface height of the chain 202 transmission mechanism is lower than the top surface of the bottom plate 1. When the car moves on the top surface of the bottom plate 1, the top surface height of the chain 202 transmission mechanism is lower than the top surface of the bottom plate 1, so that when the chain 202 transmission mechanism drives the vehicle to move, the movement of the vehicle is prevented from being disturbed.

[0048] Each chain 202 transmission mechanism includes a plurality of sprockets 201 installed in the installation slot 101, each sprocket 201 group includes two sprockets 201, and a chain 202 is sleeved between the two sprockets 201 of each sprocket 201 group. In actual use, the plurality of sprockets 201 groups are parallel to each other, and each sprocket 201 group is located on a vertical plane, and the two sprockets 201 are located at both ends of the chain 202, and each chain 202 drives a vehicle to move. Specifically, when one of the sprockets 201 groups drives the front vehicle to move to a specified position and collides with the collision area of ​​the test device, the other sprocket 201 group can drive the rear vehicle to move toward the specified position and collide with the front vehicle to simulate a chain collision.

[0049] When you need to move the vehicle, Figure 5 As shown, since there are two symmetrical switching components 31, the specific structure of the switching component 31 at one end is described, and the principle of the other end is the same. The power device 5 drives the motor to provide power, driving the rotating shaft at one end of the driving motor to rotate, and the rotating shaft drives the rotating shaft 301 of the switching component 31 to rotate through the rotating belt 8. At this time, if the slider of the switching member 302 moves and slides toward the connecting groove 305 opened in the transmission shaft 304, since the length of the slider is greater than the length of the connecting groove 305, when the rotating shaft 301 rotates, the slider can transmit power to the transmission shaft 304, thereby driving the transmission shaft 304 to rotate, as shown in FIG. Figure 3 and Figure 4 As shown, a first gear 32 is arranged on the outside of the transmission shaft 304, and the first gear 32 is meshed with the second gear 33, and the second gear 33 is fixed to the sprocket 201, so that the transmission shaft 304 can drive the sprocket 201 indirectly connected thereto to rotate, and thereby drive the entire sprocket 201 group where the sprocket 201 is located to rotate, so that the vehicle connected and fixed to the sprocket 201 group moves.

[0050] In summary, by relying on the switching member 302 slider, it is possible to drive one of the sprocket groups 201 to rotate, or drive two sprocket groups 201 to rotate at the same time, that is, it is possible to achieve a situation where one vehicle is fixed and the other vehicle is moving; it is also possible to achieve a situation where the front and rear vehicles move synchronously, which is convenient for simulating situations under different conditions and providing a more realistic basis for collision data during automobile manufacturing. The device relies on a set of switching components 31 to achieve switching control of the movement of the two vehicles. The structure is relatively simple and practical, which is conducive to the application of automobile manufacturing.

[0051] In actual use, the socket 3011 opened inside the rotating shaft 301 is a polygonal socket 3011, and the slider structure matches the polygonal socket 3011, which can prevent the slider and the rotating shaft 301 from rotating relative to each other, ensuring that the rotating shaft 301 can drive the slider to rotate synchronously, and the connecting groove 305 can also be set to a polygonal structure to ensure that the slider transmits power to the transmission shaft 304.

[0052] A partition block 3031 is provided between the two switching components 31 , electromagnets 3032 are provided at both ends of the partition block 3031 , and a control brush 6 electrically connected to the power device 5 and the electromagnet 3032 is provided on the partition block 3031 , and a metal part is provided at one end of the switching member 302 close to the electromagnet 3032 .

[0053] Specifically, a metal part is provided at one end of the slider of the switching member 302 close to the electromagnet 3032. After the electromagnet 3032 is energized, the slider can be attracted by the electromagnet 3032, squeeze the elastic part 3033, and move in the direction of the electromagnet 3032. The length of the slider is not greater than the length of the socket 3011 opened inside the rotating shaft 301. When the slider is attracted by the electromagnet 3032, it disengages from the connecting groove 305 of the transmission shaft 304 and does not transmit power to the transmission shaft 304. When the electromagnet 3032 is powered off, the slider is touched by the elastic part 3033, slides in the direction of the connecting groove 305 of the transmission shaft 304, and extends into the connecting groove 305 to drive the transmission shaft 304 to rotate.

[0054] A control brush 6 electrically connected to the drive motor and the electromagnet 3032 is provided on the rotating sleeve of the partition block 3031. When the rotating shaft 301 continues to rotate, the control brush 6 can still be used to provide power to the electromagnet 3032 in the partition block 3031, and a switching switch can be installed in the control brush 6 to respectively control the power-on status of the drive motor and the two electromagnets 3032. When switching is required, the power supply to the drive motor needs to be disconnected to slow down the rotation speed of the rotating shaft 301, and then the power supply to the electromagnet 3032 is switched to ensure that the slider of the switching member 302 can be smoothly inserted into the transmission shaft 304 to avoid excessive rotation speed affecting the switching state.

[0055] In some alternative embodiments, referring to Figure 1 , Figure 2 , Figure 6 and Figure 7 as shown, an embodiment of the present application provides an automobile collision test device. Along the length direction of a transmission mechanism 2, a plurality of fixing members 204 for fixing a vehicle under test are arranged at intervals. The fixing member 204 includes a connection block 2031 fixed on a chain 202 transmission mechanism. A threaded tube 2032 is arranged on the connection block 2031. A hook seat 2042 and a hook 2044 are sequentially connected to the threaded tube 2032. The hook 2044 is used to fix the vehicle under test.

[0056] As Figure 2 and Figure 6 shown, one chain 202 drives one corresponding vehicle. The fixing member 204 is arranged on the chain 202 through the connection block 2031. A threaded tube 2032 is arranged on the connection block 2031. The threaded tube 2032 is threadedly connected to a plug-in block 2041 on the hook seat 2042. The hook 2044 is fixed to the hook seat 2042 through a bolt 2043. The hook 2044 is clamped with the bottom of the vehicle to form a firm connection, and the connection is made by using threads, which facilitates subsequent disassembly and replacement, improves the convenience of installation and disassembly. The hook seat 2042 is arranged in a U-shaped plate structure, which can provide guiding and supporting functions for the vehicle during movement, prevent the vehicle from shifting, and increase safety.

[0057] In some alternative embodiments, referring to Figure 1 , Figure 8 and Fig. 9 as shown, an embodiment of the present application provides an automobile collision test device. One end of a bottom plate 1 is provided with a collision mechanism 4. The collision mechanism 4 is in a "C" shape and includes a vertical plate 40 and two horizontal plates 41 respectively vertically arranged at both ends of the vertical plate 40. A blocking device is arranged on the horizontal plate 41 for blocking the vehicle under test.

[0058] The collision mechanism 4 can collect the test data after the vehicle collision for providing reference for automobile manufacturing. A plurality of columns 4011 for fixing the blocking device are arranged on the horizontal plate 41. Threaded connection grooves 305 are formed in the columns 4011. The blocking device includes a plurality of sequentially connected blocking members 402. Openings matching the columns 4011 are arranged in the blocking members 402. The blocking members 402 can be sleeved on the columns 4011, and a plurality of blocking members 402 can be fixed through bolts 2043. A plurality of inclined support rods 7 are arranged between the blocking members 402 and the vertical plate 40.

[0059] Since the collision mechanism 4 has a "C" - shaped structure and blocking devices are provided on both horizontal plates 41, the chassis or roof of the vehicle can be respectively impacted according to the cumulative height of the blocking member 402. When the blocking member 402 accumulates continuously to form a wall - like structure, the full - frontal impact situation of the vehicle can also be simulated, thereby increasing the flexibility and applicability of the device.

[0060] In actual use, a column 4011 is installed at one end of the horizontal plate 41, and a threaded connection groove 305 is opened on the column 4011. The blocking member 402 is placed in a cumulative overlapping manner. An opening matching the column 4011 is provided inside the blocking member 402, so that the blocking member 402 can be sleeved on the column 4011. Specifically, after the blocking member 402 is sleeved on the column 4011, a screw can be inserted into the threaded connection groove 305 opened inside the column 4011 to fix the blocking member 402. When it is necessary to accumulate the blocking members 402, another blocking member 402 can be correspondingly placed close to the already placed blocking member 402. A threaded connection structure matching the size of the threaded connection groove 305 inside the column 4011 can be provided inside the newly added blocking member 402, and screws are inserted into the newly added blocking member 402 and the threaded connection groove 305 of the column 4011 in sequence to fix multiple blocking members 402.

[0061] In actual use, a plug - in column 4025 as shown in Fig. 9 can be set. A clamping groove can be set at the top of the column 4011. A threaded structure is opened inside the plug - in column 4025. When it is necessary to add a blocking member 402, the buckle of the plug - in column 4025 can be docked with the clamping groove on the column 4011 to fix the plug - in column 4025 and the column 4011. Then, the newly added blocking member 402 is sleeved on the plug - in column 4025 and the column 4011, and screws with appropriate lengths are used to fix the plug - in column 4025 and the column 4011.

[0062] As shown in Figure 1 and Figure 8 , a plurality of fixing grooves 702 are opened on the horizontal plate 41. A plurality of inclined support rods 7 are arranged between the blocking member 402 and the collision mechanism 4. One end of the inclined support rod 7 is connected to the fixing groove 702, and the other end is hinged to the blocking member 402 farthest from the horizontal plate 41. And a reinforcing connecting rod 71 can be set at the end of the inclined support rod 7 close to the horizontal plate 41. The arrangement of the inclined support rod 7 and the reinforcing connecting rod 71 can transfer and disperse the impact force after the vehicle collides with the collision mechanism 4, avoid fractures between structures, and improve the safety and durability of the device during use.

[0063] In actual use, structures such as sharp objects can be added to the outer surface of the blocking member 402 to simulate different impact situations, so as to improve the authenticity and applicability of the device.

[0064] In summary, two symmetrically arranged switching components 31 are used to switch the movement control of the two vehicles. The power device 5 drives the motor to provide power, driving the rotating shaft at one end of the driving motor to rotate, and the rotating shaft drives the rotating shaft 301 of the switching component 31 to rotate through the rotating belt 8. At this time, if the slider of the switching member 302 moves, it slides toward the connecting groove 305 opened in the transmission shaft 304. Since the length of the slider is greater than the length of the connecting groove 305, when the rotating shaft 301 rotates, the slider can transmit power to the transmission shaft 304, thereby driving the transmission shaft 304 to rotate. A first gear 32 is arranged on the outer side of the transmission shaft 304. The first gear 32 is meshed and transmitted to the second gear 33. The second gear 33 is fixed to the sprocket 201. Therefore, the transmission shaft 304 can drive the sprocket 201 indirectly connected thereto to rotate, and thereby drive the entire sprocket 201 group where the sprocket 201 is located to rotate, so that the vehicle connected and fixed to the sprocket 201 group moves.

[0065] By relying on the switching member 302 slider, it is possible to drive one of the sprocket groups 201 to rotate, or drive two sprocket groups 201 to rotate at the same time, that is, it is possible to realize the situation where one vehicle is fixed and the other vehicle is moving; it is also possible to realize the situation where the front and rear vehicles move synchronously, which is convenient for simulating situations under different conditions and providing a more realistic basis for collision data during automobile manufacturing. The device relies on a set of switching components 31 to realize the switching control of the movement of the two vehicles, which is convenient for simulating the situation of multi-vehicle chain collision. The structure is relatively simple and practical, which is conducive to the application of automobile manufacturing.

[0066] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 application 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 on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0067] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0068] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A vehicle collision test device, characterized in that: include: A transmission mechanism (2), the transmission mechanism (2) being arranged on the bottom plate (1) and used for driving the vehicle under test, the transmission mechanism (2) comprising at least two groups of chain transmission mechanisms and a power device (5) for driving the at least two groups of the chain transmission mechanisms to rotate; a mounting groove (101) is provided on the bottom plate (1), the chain transmission mechanism is arranged in the mounting groove (101), and the top surface of the chain transmission mechanism is lower than the top surface of the bottom plate (1); each group of the chain transmission mechanism comprises a plurality of sprocket groups mounted in the mounting groove (101), each sprocket group comprises two sprockets (201), and a chain (202) is sleeved between the two sprockets (201) of each sprocket group; A switching mechanism (3), the switching mechanism (3) being rotatably connected between the power device (5) and at least two groups of the chain transmission mechanisms, and the switching mechanism (3) being provided with a switching component (31) for engaging with or disengaging from any of the chain transmission mechanisms; two switching components (31) are symmetrically provided, each of the switching components (31) comprising a rotating shaft (301) connected to the power device (5), and a transmission shaft (304) connected to the chain transmission mechanism, and a switching member (302) being provided between the rotating shaft (301) and the transmission shaft (304), the switching member (302) being used for transmitting the power of the rotating shaft (301) to the transmission shaft (304); the rotating shaft (301) and the transmission shaft (304) are hollow structures, the switching member (302) is a slider, and the A connecting groove (305) is provided in the transmission shaft (304); the length of the slider is greater than the length of the connecting groove (305); the length of the slider is not greater than the length of the jack (3011) provided in the rotating shaft (301); an elastic member (3033) is provided at one end of the slider close to the rotating shaft (301) for enabling the slider to slide in the rotating shaft (301) and the transmission shaft (304); a partition block (3031) is provided between the two switching components (31); electromagnets (3032) are provided at both ends of the partition block (3031); a control brush (6) electrically connected to the power device (5) and the electromagnet (3032) is provided on the partition block (3031); and a metal member is provided at one end of the switching member (302) close to the electromagnet (3032).

2. The vehicle collision test device according to claim 1, characterized in that: The switching mechanism (3) further comprises a first gear (32) arranged on the switching assembly (31), and a second gear (33) fixed to the sprocket (201), wherein the first gear (32) is meshed and driven with the second gear (33).

3. The vehicle collision test device according to claim 1, characterized in that: The power device (5) is a driving motor, one end of which is connected to the rotating shaft (301) via a rotating belt (8).

4. A vehicle collision test device according to claim 1, characterized in that: A plurality of fixing members (204) for fixing the vehicle to be tested are arranged at intervals along the length direction on the conveying mechanism (2). The fixing member (204) includes a connecting block (2031) fixed on the chain transmission mechanism. A threaded tube (2032) is arranged on the connecting block (2031). A hook seat (2042) and a hook (2044) are sequentially connected to the threaded tube (2032). The hook (2044) is used to fix the vehicle to be tested.

5. A vehicle collision test device according to claim 1, characterized in that: A collision mechanism (4) is arranged at one end of the bottom plate (1). The collision mechanism (4) is in an "L" shape, including a vertical plate (40) and two horizontal plates (41) respectively vertically arranged at both ends of the vertical plate. A blocking device is arranged on the horizontal plate (41) for blocking the vehicle to be tested.

6. A vehicle collision test device according to claim 5, characterized in that: A plurality of columns (4011) for fixing the blocking device are arranged on the horizontal plate (41). Threaded connection grooves are formed in the columns (4011); The blocking device includes a plurality of sequentially connected blocking members (402). An opening matching the column (4011) is arranged in the blocking member (402). The blocking member (402) can be sleeved on the column (4011), and a plurality of the blocking members (402) can be fixed by bolts. A plurality of inclined support rods (7) are arranged between the blocking member (402) and the vertical plate (40).

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