Automobile crash test bench braking system based on high-frequency digital valve

Abstract

The utility model discloses an automobile crash test bench braking system based on a high-frequency digital valve, which comprises a traveling track and an ejection device, a plurality of braking locking plates are arranged on both sides in a T-shaped chute, and a plurality of position sensors are uniformly and fixedly arranged at the bottom in the T-shaped chute along the length direction. Pushing mechanisms used for controlling the brake locking plates to be close to or away from the sliding blocks are fixedly installed on the two sides of the advancing rail, and the position sensors control the pushing mechanisms at the corresponding positions to be started and stopped through a PLC. The device is easy to operate, the position sensor can monitor the specific moving position of the sliding block, the pushing mechanisms at the corresponding positions are controlled to be started through the PLC, the pushing mechanisms push the brake locking plates to quickly get close to the sliding block, the sliding block can be braked under clamping of the two brake locking plates, the situation that the sliding block continues to move forwards under the inertia effect is avoided, and the service life of the sliding block is prolonged. And the accuracy of the collision test is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile collision equipment, and particularly relates to a braking system for an automobile collision test bench based on a high-frequency digital valve. Background Technique

[0002] An automobile collision test device is a device used to test the collision safety performance of an automobile. It mainly consists of a vehicle impact area, a vehicle support system, a data acquisition system, etc. During the test, the test vehicle is accelerated to a certain speed and then impacts an obstacle in the impact area to simulate a real vehicle collision situation.

[0003] The utility model patent with the patent authorization announcement number CN220690476U discloses an acceleration track for automobile collision experiments. By setting a sliding frame, a traction accelerator, a movable frame, a traction frame, etc., it is convenient to install and use for different automobiles, and to traction-accelerate the automobile so as to conduct a collision experiment. By setting a sliding rod, a sliding block, a damping construction damper and a support plate, it is convenient to protect the automobile during the experiment. By setting a contact sensor, it is convenient to assist the staff in conducting the experiment operation.

[0004] However, there are still some disadvantages in the actual use of the above device. More obviously, although the sliding block can push the automobile to move, when the automobile needs to be braked when it reaches the set speed, the sliding block will continue to slide due to inertia, and thus will continue to push the automobile, which will have a certain impact on the accuracy of the automobile collision test result.

[0005] Therefore, it is very necessary to invent a braking system for an automobile collision test bench based on a high-frequency digital valve to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a braking system for an automobile collision test bench based on a high-frequency digital valve. By setting a braking locking plate member, a position sensor and a pushing mechanism, the problem of not being able to brake the slider in time, thus affecting the collision result, proposed in the above background technique is solved.

[0007] According to one aspect of the present disclosure, the following technical solution is provided: A braking system for an automobile collision test bench based on a high-frequency digital valve. The system includes a traveling track and an ejection device. The ejection device includes a slider and a baffle. The ejection device is used to move in the length direction of the traveling track. The surface of the traveling track is provided with a T-shaped chute along the length direction. The slider is slidably installed in the T-shaped chute. A plurality of braking and locking plate members are provided on both sides inside the T-shaped chute. A plurality of position sensors are evenly and fixedly installed along the length direction at the bottom inside the T-shaped chute. Thrust mechanisms for controlling the braking and locking plate members to approach or move away from the slider are fixedly installed on both sides of the traveling track. The position sensors control the start and stop of the corresponding position thrust mechanisms through a PLC.

[0008] For the braking system of an automobile collision test bench based on a high-frequency digital valve according to at least one embodiment of the present disclosure, a control box is fixedly installed at one end of the bottom of the traveling track. A winch, a PLC, and a high-frequency digital valve are installed inside the control box. The winch is fixedly connected to the slider through a cable. The position sensors control the start and stop of the thrust mechanisms through the PLC and the high-frequency digital valve.

[0009] For the braking system of an automobile collision test bench based on a high-frequency digital valve according to at least one embodiment of the present disclosure, the thrust mechanism is a cylinder or an oil cylinder.

[0010] For the braking system of an automobile collision test bench based on a high-frequency digital valve according to at least one embodiment of the present disclosure, the braking and locking plate member includes a friction plate and a steel sheet. The friction plate is fixedly installed on one side of the steel sheet. The output shaft of the thrust mechanism is inserted into the T-shaped chute and fixedly connected to the steel sheet.

[0011] For the braking system of an automobile collision test bench based on a high-frequency digital valve according to at least one embodiment of the present disclosure, braking grooves are provided on both sides of the slider at positions flush with the friction plates.

[0012] For the braking system of an automobile collision test bench based on a high-frequency digital valve according to at least one embodiment of the present disclosure, the position sensor is a proximity switch. A groove is provided along the length direction at the bottom inside the T-shaped chute. The position sensor is fixedly installed in the groove.

[0013] For the braking system of an automobile collision test bench based on a high-frequency digital valve according to at least one embodiment of the present disclosure, a plurality of idler rollers are rotatably installed at the top and bottom of both sides inside the T-shaped chute. The idler rollers are in rolling contact with the slider.

[0014] The technical effects and advantages of the present utility model:

[0015] The utility model is simple to operate. The position sensor can monitor the specific position of the slider movement, so as to start the pushing mechanism at the corresponding position through the PLC. The pushing mechanism will push the braking locking plate to quickly approach the slider, and the slider can be braked under the clamping of the two braking locking plates, thus avoiding the continuous forward movement of the slider under the action of inertia and ensuring the accuracy of the collision test. Brief Description of the Drawings

[0016] The drawings illustrate exemplary embodiments of the present disclosure and are used together with the description to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure, and the drawings are included in this specification and form a part of this specification.

[0017] Figure 1 It is a schematic diagram of the overall structure of a braking system for an automotive collision test bench based on a high-frequency digital valve according to an embodiment of the present disclosure.

[0018] Figure 2 It is a top view of a traveling track in a braking system for an automotive collision test bench based on a high-frequency digital valve according to an embodiment of the present disclosure.

[0019] Figure 3 It is a cross-sectional view of a traveling track in a braking system for an automotive collision test bench based on a high-frequency digital valve according to an embodiment of the present disclosure.

[0020] Figure 4 It is a front view of a traveling track in a braking system for an automotive collision test bench based on a high-frequency digital valve according to an embodiment of the present disclosure.

[0021] The specific reference numerals in the drawings are as follows:

[0022] 1. Traveling track; 11. T-shaped chute; 12. Groove; 2. Slider; 21. Baffle; 22. Braking groove; 3. Cable; 4. Control box; 5. Braking locking plate; 51. Friction plate; 52. Steel sheet; 6. Pushing mechanism; 7. Position sensor; 8. Roller. Detailed Embodiments

[0023] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "over", "upper", and "side (e.g., as in "side wall")" to describe the relationship of one component to another (other) component as shown in the figures. In addition to the orientation depicted in the figures, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the figures is flipped, a component described as "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Additionally, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted.

[0024] As Figures 1-4 shown, a braking system of an automotive collision test bench based on a high-frequency digital valve in the present disclosure, the system includes a traveling track 1 and an ejection device. The ejection device includes a slider 2 and a baffle 21. The baffle 21 is used to connect with the tested vehicle to drive the vehicle to conduct a collision test. The ejection device is used to move in the length direction of the traveling track 1. A T-shaped chute 11 is provided on the surface of the traveling track 1 along the length direction. The slider 2 is slidably installed in the T-shaped chute 11. A plurality of braking locking plate members 5 are provided on both sides inside the T-shaped chute 11. A plurality of position sensors 7 are uniformly fixedly installed at the bottom of the T-shaped chute 11 along the length direction. A pushing mechanism 6 for controlling the braking locking plate members 5 to approach or move away from the slider 2 is fixedly installed on both sides of the traveling track 1. The position sensors 7 control the start and stop of the corresponding position pushing mechanism 6 through a PLC.

[0025] Among them, the PLC can adopt Siemens S7-300 PLC, which can be used for direct control of the device, can monitor a plurality of subordinate programmable controllers, is also suitable for the control of medium or large control systems, and can meet the applications with medium performance requirements, so as to realize the control of a plurality of pushing mechanisms 6.

[0026] In this embodiment, a control box 4 is fixedly installed at one end of the bottom of the traveling track 1. A winch, a PLC, and a high-frequency digital valve are installed in the control box 4. The winch is fixedly connected with the slider 2 through a cable 3. The cable 3 is located in the T-shaped chute 11, and a roller is provided at one end of the cable 3 extending out of the T-shaped chute 11. The roller is used to support the cable 3 to facilitate its sliding. The position sensors 7 control the start and stop of the pushing mechanism 6 through the PLC and the high-frequency digital valve. The high-frequency digital valve module has an extremely high response speed and can quickly respond to control signals to realize the rapid braking of the pushing mechanism 6.

[0027] In this embodiment, the pushing mechanism 6 is a cylinder or an oil cylinder.

[0028] In this embodiment, the braking and locking plate member 5 includes a friction plate 51 and a steel plate 52. The friction plate 51 is fixedly installed on one side of the steel plate 52. The output shaft of the pushing mechanism 6 is inserted into the T-shaped chute 11 and fixedly connected to the steel plate 52.

[0029] Further, to increase the friction force, in this embodiment, braking grooves 22 are formed on both sides of the slider 2 at positions flush with the friction plate 51. The friction plate 51 can be attached to the inside of the braking grooves 22 to brake the slider 2.

[0030] In this embodiment, the position sensor 7 is a proximity switch, and the proximity switch is a photoelectric proximity switch: it uses the principle of the photoelectric effect for detection. A groove 12 is formed at the bottom of the T-shaped chute 11 along the length direction. The position sensor 7 is fixedly installed in the groove 12. The proximity switch can detect whether there is a slider 2 passing above by emitting infrared rays, so as to determine the specific position of the slider 2.

[0031] Further, to ensure the smoothness of the slider 2 sliding in the T-shaped chute 11, in this embodiment, a plurality of idler rollers 8 are rotatably installed at the top and bottom of both sides inside the T-shaped chute 11. The idler rollers 8 are in rolling contact with the slider 2.

[0032] The working principles of the above PLC and position sensor are prior arts and will not be described in detail here.

[0033] The specific operation steps are as follows: By setting the rotation speed of the winch to wind in the cable 3, the speed of the vehicle is controlled. When braking is required at a certain speed, the winch only needs to stop working at this speed. At this time, the position sensor 7 can monitor the specific position of the slider 2 moving, so as to control the corresponding pushing mechanism 6 at the position to start through the PLC. The pushing mechanism 6 will push the braking and locking plate member 5 to quickly approach the slider 2. The slider 2 can be braked under the clamping of the two braking and locking plate members 5, so as to prevent the slider 2 from continuing to move forward under the action of inertia and ensure the accuracy of the collision test.

[0034] In the description of this specification, the description referring to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with that embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples within.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or variations can be made on the basis of the above disclosure, and these changes or variations are still within the scope of the present disclosure.

Claims

1. An automotive collision test bench braking system based on a high-frequency digital valve, the system comprising a traveling track and an ejection device, characterized in that: The ejection device includes a slider and a baffle. The ejection device is used to move in the longitudinal direction of the travel track. The surface of the travel track is provided with a T-shaped chute along the longitudinal direction. The slider is slidably installed in the T-shaped chute. A plurality of braking and locking plate members are provided on both sides inside the T-shaped chute. A plurality of position sensors are uniformly and fixedly installed on the inner bottom of the T-shaped chute along the longitudinal direction. Thrust mechanisms for controlling the braking and locking plate members to approach or move away from the slider are fixedly installed on both sides of the travel track. The position sensors control the start and stop of the corresponding position thrust mechanisms through a PLC.

2. The braking system of the vehicle collision test bench based on a high-frequency digital valve according to claim 1, characterized in that: A control box is fixedly installed at one end of the bottom of the travel track. A winch, a PLC, and a high-frequency digital valve are installed in the control box. The winch is fixedly connected to the slider through a cable. The position sensors control the start and stop of the thrust mechanisms through the PLC and the high-frequency digital valve.

3. The braking system of the vehicle collision test bench based on a high-frequency digital valve according to claim 1, characterized in that: The thrust mechanism is a cylinder or an oil cylinder.

4. The braking system of the vehicle collision test bench based on a high-frequency digital valve according to claim 1, characterized in that: The braking and locking plate member includes a friction plate and a steel sheet. The friction plate is fixedly installed on one side of the steel sheet. The output shaft of the thrust mechanism is inserted into the T-shaped chute and fixedly connected to the steel sheet.

5. The braking system of the vehicle collision test bench based on a high-frequency digital valve according to claim 4, characterized in that: Braking grooves are formed on both sides of the slider at positions flush with the friction plates.

6. The braking system of the vehicle collision test bench based on a high-frequency digital valve according to claim 1, characterized in that: The position sensor is a proximity switch. A groove is formed on the inner bottom of the T-shaped chute along the longitudinal direction. The position sensor is fixedly installed in the groove.

7. The braking system of the vehicle collision test bench based on a high-frequency digital valve according to claim 1, characterized in that: A plurality of idler rollers are rotatably installed at the top and bottom of both sides inside the T-shaped chute. The idler rollers are in rolling contact with the slider.

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