A multi-path switching traction mechanism for automobile crash test traction

Abstract

The utility model discloses a kind of multi-path switching traction mechanism of automobile collision test traction, belong to automobile test technical field, including support base, the top of support base is provided with traction groove, the inside rotationally connected of support base has rotary disc, the side surface of rotary disc is fixedly connected with traction track, the inside of rotary disc is provided with transmission assembly, the transmission assembly includes transmission cavity being opened in the inside of rotary disc;The setting of the transmission assembly of the utility model, through the multi-stage meshing transmission of driving gear, transmission gear and tooth groove, the accurate control of cooperation stepper motor, the high-precision rotational positioning of traction track can be realized, ensure that it is accurately aligned with target traction groove, stably realize the switching of traction path, improve test efficiency;Transmission gear of annular array distribution can evenly disperse force, improve the stability of rotary disc rotation, avoid the occurrence of jam or deviation in path switching process.

Description

Technical Field

[0001] This utility model belongs to the field of automotive testing technology, specifically relating to a multi-path switching traction mechanism for automotive crash test traction. Background Technology

[0002] Conducting crash tests during automobile production is a core verification step in translating vehicle safety design into actual protective capabilities. It not only meets the mandatory requirements of national safety regulations but is also a crucial barrier to ensure the safety of occupants and pedestrians. Essentially, it simulates common real-world collision scenarios to accurately test the comprehensive effectiveness of the vehicle's passive safety systems. On one hand, it verifies the crashworthiness and energy absorption logic of the vehicle body structure—for example, whether the front longitudinal beams can effectively disperse the impact force and whether the passenger compartment can maintain a complete "survival space" to prevent occupants from being crushed due to structural deformation. On the other hand, it tests the triggering timing and protective effect of restraint systems such as airbags and seatbelt pretensioners, ensuring that they can accurately buffer the impact between occupants and the vehicle body at the moment of an accident.

[0003] During car crash tests, a traction mechanism is often used to move the car and conduct the crash test. However, existing traction mechanisms cannot easily adjust the traction route during use, which increases the test preparation time and reduces the overall test efficiency.

[0004] Therefore, this utility model provides a multi-path switching traction mechanism for automobile collision test traction. Utility Model Content

[0005] The purpose of this invention is to provide a multi-path switching traction mechanism for automobile collision test traction, so as to solve the problem of "inability to conveniently adjust the traction route" mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-path switching traction mechanism for automobile collision test traction, comprising a support base, a traction groove on the top of the support base, a rotating disk rotatably connected inside the support base, a traction rail fixedly connected to the side surface of the rotating disk, a transmission assembly inside the rotating disk, the transmission assembly including a transmission cavity inside the rotating disk, a drive gear rotatably connected to the center of the transmission cavity, a transmission gear meshing with the side surface of the drive gear, a toothed groove on the inner wall of the transmission cavity meshing with the transmission gear, and a stepper motor fixedly installed below the rotating disk, the transmission end of the stepper motor being fixedly connected to the drive gear.

[0007] In a preferred embodiment, the traction grooves are arranged in a circular array on the top of the support base, and the traction track is located directly below the traction grooves. The transmission gears are rotatably connected inside the transmission cavity and are arranged in a ring array outside the drive gears.

[0008] In a preferred embodiment, the traction groove is provided with a sealing component, the sealing component including a connecting groove formed in the inner wall of the traction groove, a rotating shaft rotatably connected inside the connecting groove, and a cover plate fixedly connected to the side surface of the rotating shaft.

[0009] In a preferred embodiment, a connecting block one is fixedly connected to one side of the cover plate, a connecting block two is fixedly connected to the inside of the traction groove, a hydraulic cylinder is fixedly connected to the inside of the connecting block two, and the telescopic end of the hydraulic cylinder is rotatably connected to the connecting block one.

[0010] In a preferred embodiment, a support ring is fixedly connected inside the support base, and a sliding groove is provided at the bottom of the traction rail. The sliding groove is arc-shaped and slidably connected to the outside of the support ring.

[0011] In a preferred embodiment, a traction slider for towing a vehicle is detachably installed inside the traction rail, and the traction slider is slidably connected to the traction rail.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The transmission component of this invention, through multi-stage meshing transmission of drive gears, transmission gears and tooth grooves, combined with the precise control of stepper motors, can achieve high-precision rotational positioning of the traction track, ensuring accurate alignment with the target traction groove, and stably realizing the switching of the traction path, thus improving the test efficiency; the transmission gears distributed in a ring array can evenly distribute the force, improve the stability of the rotation of the rotating shaft, and avoid jamming or deviation during the path switching process.

[0013] This invention uses a hydraulic cylinder to drive the automatic opening and closing of the cover plate, which can quickly respond to the traction path switching needs without manual operation, thus improving test efficiency. When the cover plate is closed, it can seal the traction groove, preventing external debris from entering the support base and affecting the operation of the transmission components or traction track. At the same time, it can prevent vehicles or equipment from accidentally falling into the traction groove during the test, thus improving safety. Attached Figure Description

[0014] Figure 1 This is a three-dimensional front view schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional bottom view of the present invention; Figure 3 This is a three-dimensional structural diagram of the rotating shaft and other components of this utility model; Figure 4 This is a three-dimensional structural diagram of the internal components of the rotating shaft of this utility model; Figure 5 This is a three-dimensional structural diagram of the closed component and other parts of this utility model.

[0015] In the diagram: 1. Support base; 2. Traction groove; 3. Rotating disk; 4. Traction rail; 5. Support ring; 6. Slide groove; 201. Connecting groove; 202. Rotating shaft; 203. Cover plate; 204. Connecting block one; 205. Connecting block two; 206. Hydraulic cylinder; 301. Transmission cavity; 302. Drive gear; 303. Transmission gear; 304. Gear groove; 305. Stepper motor. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments.

[0017] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0018] Please see Figure 1-5 This utility model provides a multi-path switching traction mechanism for automobile collision test traction, including a support base 1, a traction groove 2 on the top of the support base 1, a rotating disk 3 rotatably connected inside the support base 1, a traction rail 4 fixedly connected to the side surface of the rotating disk 3, a transmission assembly inside the rotating disk 3, the transmission assembly including a transmission cavity 301 inside the rotating disk 3, a drive gear 302 rotatably connected to the center of the transmission cavity 301, a transmission gear 303 meshing with the side surface of the drive gear 302, a toothed groove 304 on the inner wall of the transmission cavity 301, the toothed groove 304 meshing with the transmission gear 303, a stepper motor 305 fixedly installed below the rotating disk 3, the transmission end of the stepper motor 305 fixedly connected to the drive gear 302; the traction groove 2 is located on the top of the support base 1 in a circumferential array, and the traction rail 4 is located directly below the traction groove 2; the transmission gear 303 is rotatably connected inside the transmission cavity 301 and located outside the drive gear 302 in a ring array.

[0019] When a traction path needs to be switched, the stepper motor 305 starts and drives the drive gear 302 to rotate in the transmission cavity 301. The drive gear 302 meshes with the transmission gears 303 distributed in an outer ring array, causing the transmission gears 303 to rotate synchronously. Since the transmission gears 303 also mesh with the tooth grooves 304 on the inner wall of the transmission cavity 301, the rotating disk 3 rotates as a whole under the meshing force, which in turn drives the traction track 4 fixed on its side surface to rotate synchronously, so that the traction track 4 is aligned with the different traction grooves 2 distributed in the circumferential array on the top of the support base 1, realizing the switching of multiple paths. The transmission component of this utility model, through the multi-stage meshing transmission of the drive gear 302, transmission gear 303 and tooth grooves 304, combined with the precise control of the stepper motor 305, can realize the high-precision rotation positioning of the traction track 4, ensuring that it is accurately aligned with the target traction groove 2, and stably realizing the switching of traction paths, thus improving the test efficiency. The transmission gears 303 distributed in an annular array can evenly distribute the force, improve the stability of the rotation of the rotating disk 3, and avoid jamming or deviation during the path switching process.

[0020] Specifically, such as Figure 1 and Figure 5 As shown, the traction groove 2 is equipped with a sealing assembly, which includes a connecting groove 201 formed in the inner wall of the traction groove 2. A rotating shaft 202 is rotatably connected inside the connecting groove 201. A cover plate 203 is fixedly connected to the side surface of the rotating shaft 202. A connecting block 1 204 is fixedly connected to one side of the cover plate 203. A connecting block 205 is fixedly connected inside the traction groove 2. A hydraulic cylinder 206 is fixedly connected inside the connecting block 205. The telescopic end of the hydraulic cylinder 206 is rotatably connected to the connecting block 1 204.

[0021] When the traction track 4 switches to a traction slot 2, the hydraulic cylinder 206 corresponding to that traction slot 2 is activated. Its telescopic end extends and pulls the cover plate 203 through the connecting block 204, causing the cover plate 203 to rotate around the rotating shaft 202 in the connecting slot 201, thereby opening the traction slot 2 to allow the traction component to pass through. When the traction slot 2 is not in use, the telescopic end of the hydraulic cylinder 206 retracts, pushing the cover plate 203 to rotate in the opposite direction until the cover plate 203 closes the traction slot 2. This utility model automatically opens and closes the cover plate 203 by driving the hydraulic cylinder 206, which can quickly respond to the traction path switching requirements without manual operation, thus improving test efficiency. When the cover plate 203 is closed, it can seal the traction slot 2, preventing external debris from entering the support base 1 and affecting the operation of the transmission component or the traction track 4. At the same time, it can prevent vehicles or equipment from accidentally falling into the traction slot 2 during the test, thus improving safety.

[0022] Specifically, such as Figure 3 and Figure 4As shown, a support ring 5 is fixedly connected inside the support base 1, and a groove 6 is provided at the bottom of the traction rail 4. The groove 6 is arc-shaped and slidably connected to the outside of the support ring 5. The sliding fit between the support ring 5 and the arc-shaped groove 6 provides stable support for the rotating traction rail 4, preventing it from sagging or deforming due to gravity, and ensuring that the traction rail 4 always remains horizontal. The sliding connection method can reduce the frictional resistance when the traction rail 4 rotates, reduce the load on the stepper motor 305, reduce component wear, and extend the service life of the equipment.

[0023] Specifically, such as Figure 1 As shown, a traction slider for towing the vehicle is detachably installed inside the traction rail 4. The traction slider is slidably connected to the traction rail 4. The sliding connection design between the traction slider and the traction rail 4 can enable the test vehicle to obtain a stable traction force, avoid swaying or deviation during the traction process, and ensure the accuracy of the initial motion parameters of the collision test.

[0024] Working principle and usage process of this utility model: When it is necessary to switch the traction path, the stepper motor 305 is started to drive the drive gear 302 to rotate in the transmission cavity 301. The drive gear 302 meshes with the transmission gear 303 in the outer ring array, causing the transmission gear 303 to rotate synchronously. Because the transmission gear 303 meshes with the tooth groove 304 on the inner wall of the transmission cavity 301 at the same time, the rotating disk 3 rotates as a whole under the meshing force, which drives the traction track 4 fixed on its side surface to rotate synchronously, so that the traction track 4 is aligned with the target traction groove 2 distributed in the circumferential array on the top of the support base 1. At this time, the hydraulic cylinder 206 corresponding to the traction groove 2 is activated, and its telescopic end pulls the cover plate 203 through the connecting block 204, so that the cover plate 203 rotates around the rotating shaft 202 in the connecting groove 201 to open the traction groove 2. Meanwhile, the support ring 5 inside the support base 1 slides with the arc-shaped sliding groove 6 at the bottom of the traction rail 4 to provide stable support for the traction rail 4 during rotation and subsequent traction process. Finally, the traction slider inside the traction track 4 slides along the track to achieve traction of the test vehicle.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-path switching traction mechanism for automobile crash test traction, comprising a support base (1), characterized in that: The top of the support base (1) is provided with a traction groove (2). The inside of the support base (1) is rotatably connected to a rotating disk (3). The side surface of the rotating disk (3) is fixedly connected to a traction rail (4). The inside of the rotating disk (3) is provided with a transmission assembly. The transmission assembly includes a transmission cavity (301) opened inside the rotating disk (3). The center of the transmission cavity (301) is rotatably connected to a drive gear (302). The side surface of the drive gear (302) is meshed with a transmission gear (303). The inner wall of the transmission cavity (301) is provided with a tooth groove (304). The tooth groove (304) is meshed with the transmission gear (303). A stepper motor (305) is fixedly installed below the rotating disk (3). The transmission end of the stepper motor (305) is fixedly connected to the drive gear (302).

2. The multi-path switching traction mechanism for automobile crash test traction according to claim 1, characterized in that: The traction groove (2) is located on the top of the support base (1) in a circular array, and the traction track (4) is located directly below the traction groove (2). The transmission gear (303) is rotatably connected to the inside of the transmission cavity (301) and is located outside the drive gear (302) in a ring array.

3. The multi-path switching traction mechanism for automobile crash test traction according to claim 1, characterized in that: The traction groove (2) is provided with a sealing component inside. The sealing component includes a connecting groove (201) opened in the inner wall of the traction groove (2). A rotating shaft (202) is rotatably connected inside the connecting groove (201). A cover plate (203) is fixedly connected to the side surface of the rotating shaft (202).

4. The multi-path switching traction mechanism for automobile crash test traction according to claim 3, characterized in that: A connecting block 1 (204) is fixedly connected to one side of the cover plate (203), a connecting block 2 (205) is fixedly connected inside the traction groove (2), a hydraulic cylinder (206) is fixedly connected inside the connecting block 2 (205), and the telescopic end of the hydraulic cylinder (206) is rotatably connected to the connecting block 1 (204).

5. The multi-path switching traction mechanism for automobile crash test traction according to claim 1, characterized in that: The support base (1) is fixedly connected to the support ring (5), and the bottom of the traction rail (4) is provided with a sliding groove (6). The sliding groove (6) is arc-shaped and is slidably connected to the outside of the support ring (5).

6. The multi-path switching traction mechanism for automobile crash test traction according to claim 1, characterized in that: The traction rail (4) is detachably equipped with a traction slider for towing vehicles, and the traction slider is slidably connected to the traction rail (4).

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