Calibrating device for deceleration collision test bench

Abstract

The utility model relates to the technical field of speed calibration devices, and particularly discloses a deceleration collision test bench calibration device which comprises an instantaneous speed calibration assembly and an acceleration calibration assembly carried at the front end of a test bench. The instantaneous speed calibration assembly comprises a supporting rack, a laser arranged on the supporting rack, a photoelectric detector arranged on the supporting rack and used for receiving laser signals and a first signal transmission module arranged on the supporting rack and electrically connected with the laser and the photoelectric detector, and a gap is formed between the laser and the photoelectric detector. The device further comprises a fixed-length plate which is carried on one side of the test bench and can penetrate through the gap, and when the test bench abuts against the parking mechanism, the laser and the photoelectric detector are located on the two sides of the end, away from the parking mechanism, of the fixed-length plate respectively. And the used deceleration collision test bench calibration device cannot visually calibrate the instantaneous speed when the test bench collides with the parking mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of speed calibration devices, and specifically discloses a deceleration collision test bench calibration device. Background Art

[0002] In the automotive industry, dynamic tests are involved in seat belt assemblies or restraint systems, specifically deceleration collision tests on seat belt assemblies or restraint systems. During this test, a deceleration collision test bench and its auxiliary devices are required to monitor the collision speed and the acceleration of the trolley after the collision.

[0003] Specifically, the test process usually involves the use of a test bench, a seat and a parking mechanism. The seat belt assembly or restraint system is installed on the seat, and the dummy is fastened to the seat and moved synchronously by the test bench. The test bench slides toward the parking mechanism and collides with it to obtain the instantaneous velocity and collision acceleration.

[0004] In the prior art, the deceleration collision test device used in the deceleration collision test is usually implemented by installing a speed sensor, and in the process of calibrating the collision speed of the deceleration collision device, it is usually directly connected in parallel with the speed sensor signal line in the deceleration collision device using a frequency meter, and compared with the monitoring signal at the moment of collision. However, the speed calibrated in this way is not the instantaneous speed at the time of collision, and will be affected by the signal transmission speed. In the process of calibrating the collision acceleration, the conventional method is to install the acceleration sensor on the trolley, and then use the connecting line to calibrate the acceleration curve on the ground using a dynamic signal analyzer. Since the acceleration path of the trolley is too long, the connecting line is easy to break or pull the dynamic signal analyzer during the acceleration of the trolley, and it is easy to injure the calibration personnel.

[0005] Therefore, in view of this, the inventor provides a deceleration collision test bench calibration device to solve the above-mentioned problem. Utility Model Content

[0006] The utility model aims to solve the problem that in the calibration process of the traditional deceleration collision test bench, the deceleration collision test bench calibration device used cannot directly measure the instantaneous speed when the test bench collides with the parking mechanism.

[0007] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a deceleration collision test bench calibration device, including an instantaneous speed calibration component and an acceleration calibration component mounted on the front end of the test bench, the instantaneous speed calibration component includes a support frame, a laser arranged on the support frame, a photoelectric detector arranged on the support frame for receiving laser signals, and a first signal transmission module arranged on the support frame and electrically connected to the laser and the photoelectric detector, and a gap is formed between the laser and the photoelectric detector;

[0008] It also includes a fixed-length plate mounted on one side of the test bench and capable of passing through the gap. When the test bench abuts against the parking mechanism, the laser and the photoelectric detector are respectively located on both sides of an end of the fixed-length plate away from the parking mechanism.

[0009] Furthermore, the support stand includes a bottom support plate, a top support plate arranged above the bottom support plate, and a support column arranged between the bottom support plate and the top support plate.

[0010] Furthermore, the support column includes a sleeve fixedly connected to the bottom support plate and a sliding rod slidably connected to the inner wall of the sleeve and fixed to the top support plate at the top. A plurality of threaded holes are formed through the side wall of the sleeve, and a threaded rod is provided on the side wall of the sleeve that can be screwed into the threaded hole and pressed against the sliding rod.

[0011] Furthermore, the sleeve is provided with a bottom plate for carrying the photoelectric detector, and the top of the slide rod is fixedly connected with a top plate for carrying the laser.

[0012] Furthermore, the acceleration calibration assembly includes an acceleration sensor fixedly connected to the end of the test bench and a protective shell fixedly connected to the test bench, and a second signal transmission module electrically connected to the acceleration sensor is mounted in the protective shell.

[0013] The principle and effect of this scheme are:

[0014] 1. Compared with the prior art, the utility model is provided with an instantaneous speed calibration component, which is applied at the moment of collision between the test bench and the parking mechanism, and the instantaneous speed is detected by the instantaneous speed calibration component, which solves the problem that the deceleration collision test bench calibration device used in the traditional deceleration collision test bench calibration process cannot directly measure the instantaneous speed when the test bench collides with the parking mechanism.

[0015] 2. Compared with the prior art, the instantaneous speed calibration component of the utility model is equipped with a laser and a photoelectric detector, and a fixed-length plate is installed on one side of the test bench. During the sliding stage of the test bench, the test bench drives the fixed-length plate to move synchronously. The fixed-length plate has the same speed and acceleration as the test bench. Before the test bench collides with the parking mechanism, the fixed-length plate close to the end of the parking mechanism will slide into the gap between the laser and the photoelectric detector. When the test bench collides with the parking mechanism, the laser and the photoelectric detector are located at the end of the fixed-length plate away from the parking mechanism, and in the subsequent driving process, the fixed-length plate is separated from the laser and the photoelectric detector;

[0016] When the fixed-length board is located between the laser and the photoelectric detector, the speed of the fixed-length board can be calculated by time and the length of the fixed-length board. This speed is also the maximum speed that the test bench can reach at the moment of collision, thus completing the calibration of the instantaneous speed before stopping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a deceleration collision test bench calibration device proposed in an embodiment of the present application is shown;

[0019] Figure 2 A schematic diagram of a deceleration collision test bench calibration device proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] The figure marks in the drawings of the specification include: bottom support plate 1, sleeve 2, slide rod 3, top support plate 4, top flat plate 5, bottom flat plate 6, laser 7, photodetector 8, fixed-length plate 9, test bench 10, acceleration sensor 11, protective shell 12, parking mechanism 13.

[0022] A deceleration collision test bench calibration device, for example Figure 1 and Figure 2 As shown:

[0023] It includes an instantaneous speed calibration component and an acceleration calibration component mounted on the front end of the test bench 10.

[0024] The instantaneous speed calibration assembly includes a support frame, a laser 7 mounted on the support frame, and a photodetector 8 mounted on the support frame for receiving the signal of the laser 7. The support frame includes a bottom support plate 1, a top support plate 4 mounted above the bottom support plate 1, and a support column mounted between the bottom support plate 1 and the top support plate 4. The support column includes a sleeve 2 fixedly mounted on the bottom support plate 1 and a slide bar 3 mounted in the sleeve 2 and capable of vertical sliding, and the top end of the slide bar 3 is fixed to the bottom surface of the top support plate 4. The sleeve 2 is also provided with a plurality of threaded holes at equal intervals, through which a threaded rod can be screwed into the sleeve 2, and the slide bar 3 is pressed tightly against the sleeve 2 by the inner end of the threaded rod.

[0025] In this embodiment, a bottom plate 6 is further mounted on the sleeve 2, and a top plate 5 is fixedly mounted on the top of the slide bar 3. The inner side of the bottom plate 6 is sleeved outside the sleeve 2, and is fastened to the outside of the sleeve 2 by screwing in bolts, the photoelectric detector 8 is mounted on the outer end of the bottom plate 6, and the laser 7 is mounted on the outer end of the top plate 5, and the photoelectric detector 8 receives the laser 7 signal, and a gap is formed between the photoelectric detector 8 and the laser 7.

[0026] The instantaneous speed calibration assembly further includes a fixed-length plate 9 mounted on the side wall of the test bench 10 and capable of passing through the gap. In this embodiment, when the test bench 10 and the parking mechanism 13 are in contact, the laser 7 and the photodetector 8 are respectively located on both sides of the end of the fixed-length plate 9 away from the parking mechanism 13.

[0027] A first signal transmission module electrically connected to the laser 7 and the photodetector 8 is also mounted inside the top support plate 4 .

[0028] The acceleration calibration assembly includes an acceleration sensor 11 fixedly mounted on the front end of the test bench 10, i.e., an end that can contact one end of the parking mechanism 13, and a protective shell 12 mounted on the top of the test bench 10, in which the protective shell 12 is equipped with a second signal transmission module electrically connected to the acceleration sensor 11.

[0029] In this embodiment, the first signal transmission module specifically includes a signal collector electrically connected to the laser 7 and the photodetector 8, a signal analyzer electrically connected to the signal collector, and a display electrically connected to the signal analyzer. The signal analyzer is equipped with a program for calculating instantaneous speed, and the motion algorithm programs are all commonly used calculation programs in the prior art. The first signal transmission module is powered by external input.

[0030] The second signal transmission module specifically includes a data collector electrically connected to the acceleration sensor 11 and a power supply structure installed in the protective housing 12 .

[0031] When the utility model is used, during the sliding stage of the test bench 10, the test bench 10 drives the fixed-length plate 9 to move synchronously, and the fixed-length plate 9 has the same speed and acceleration as the test bench 10;

[0032] Before the test bench 10 collides with the parking mechanism 13, the end of the fixed-length plate 9 close to the parking mechanism 13 will slide into the gap between the laser 7 and the photodetector 8. When the test bench 10 collides with the parking mechanism 13, the laser 7 and the photodetector 8 are located at the end of the fixed-length plate 9 away from the parking mechanism 13, and in the subsequent driving process, the fixed-length plate 9 is separated from the laser 7 and the photodetector 8.

[0033] During the running process when the fixed-length board 9 is located between the laser 7 and the photoelectric detector 8, the speed of the fixed-length board 9 can be calculated by time and the length of the fixed-length board 9. This speed is also the maximum speed that the test bench 10 can reach at the moment of collision, and the calibration of the instantaneous speed before parking is completed;

[0034] The utility model can directly calibrate the collision speed instead of the traditional electrical signal of the speed sensor monitoring the deceleration collision device, which greatly improves the calibration accuracy and ensures the safety of personnel. The utility model can also solve the problems of difficult installation and easy tearing of signal lines in the traditional calibration process.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A deceleration collision test bench calibration device, characterized in that: The test bench comprises an instantaneous speed calibration component and an acceleration calibration component mounted on the front end of the test bench, wherein the instantaneous speed calibration component comprises a support frame, a laser disposed on the support frame, a photoelectric detector disposed on the support frame for receiving laser signals, and a first signal transmission module disposed on the support frame and electrically connected to the laser and the photoelectric detector, wherein a gap is formed between the laser and the photoelectric detector; It also includes a fixed-length plate mounted on one side of the test bench and capable of passing through the gap. When the test bench abuts against the parking mechanism, the laser and the photoelectric detector are respectively located on both sides of an end of the fixed-length plate away from the parking mechanism.

2. A deceleration collision test bench calibration device according to claim 1, characterized in that: The support stand comprises a bottom support plate, a top support plate arranged above the bottom support plate, and a support column arranged between the bottom support plate and the top support plate.

3. The deceleration collision test bench calibration device according to claim 2, characterized in that: The support column includes a sleeve fixedly connected to the bottom support plate and a sliding rod slidably connected to the inner wall of the sleeve and fixed to the top support plate at the top. A plurality of threaded holes are formed through the side wall of the sleeve, and a threaded rod is provided on the side wall of the sleeve that can be screwed into the threaded holes and pressed against the sliding rod.

4. The deceleration collision test bench calibration device according to claim 3, characterized in that: The sleeve is provided with a bottom plate for carrying a photoelectric detector, and the top of the slide rod is fixedly connected with a top plate for carrying a laser.

5. The deceleration collision test bench calibration device according to claim 1, characterized in that: The acceleration calibration assembly comprises an acceleration sensor fixedly connected to the end of the test bench and a protective shell fixedly connected to the test bench, and a second signal transmission module electrically connected to the acceleration sensor is mounted in the protective shell.

Images