CN110542530A - A kind of anti-knock test device and its experimental method - Google Patents

Abstract

The invention discloses an anti-knock testing device and an experimental method thereof. The device includes a simulated cabin, a cabin end cover and a testing system. A clamping device is arranged on the cabin end cover, and the clamping device fixes a sample. On the end cover of the cabin, the bottom of the simulated cabin is provided with a mounting hole for installing a sensor bracket, the sensor bracket is fixed on the bottom of the simulated cabin by a first nut, a sensor base is installed on the sensor bracket, and the sensor is installed on the sensor base. The anti-knock test device integrates a variety of advanced testing technologies, adopts a joint diagnosis method to comprehensively evaluate the anti-knock effect, and has the advantages of simple operation and good reliability.

Description

A kind of anti-knock test device and its experimental method

technical field

The invention relates to a test device, in particular to an anti-knock test device and an experimental method thereof.

Background technique

Research on the anti-knock performance of materials or structures is of great significance to improve the anti-knock performance of armored vehicles. In the past, the anti-knock test devices were often designed more extensively and had fewer test items. In order to better characterize the anti-knock performance of materials or structures, it is necessary to design more elaborate tests and add advanced test items.

Contents of the invention

The object of the present invention is to provide an anti-knock test device and its experimental method that integrates multiple testing methods. The device can continuously change the sensor installation type, installation distance, etc. according to different usage scenarios, and the multi-system joint diagnostic test can provide More and more reliable data.

In order to achieve the above-mentioned technical effects, the present invention provides the following technical solutions: a kind of anti-knock test device, including a simulated cabin, a cabin end cover and a test system, a clamping device is arranged on the cabin end cover, and the clamping device The sample is fixed on the end cover of the cabin, and the bottom of the simulation cabin is provided with a mounting hole for installing the sensor bracket. The sensor bracket is fixed on the bottom of the simulation cabin through the first nut, and the sensor base is installed on the sensor bracket, and the sensor is installed on the sensor base. superior.

A further technical solution is that the test system is selected from any one or more of PDV speed measurement system, pressure test system, backboard speed test, cabin overpressure test, and cabin sound field test.

A further technical solution is that the clamping device is composed of a clamp, a second nut and a bolt, and the clamp fixes the sample and the end cover of the cabin together, and tightens by adjusting the position of the second nut.

A further technical solution is that the lower end of the sensor bracket is prefabricated with threads, and the relative position between the sensor bracket and the simulation cabin can be adjusted arbitrarily by adjusting the position of the first nut, and the sensor bracket adopts a hollow design so that the test cable can be connected to the simulation cabin .

A further technical solution is that the PDV speed measurement system includes a PDV bracket, a guide column, a PDV base and a PDV probe, the PDV bracket is fixed on the sensor bracket, the PDV bracket is equipped with a guide column, and the PDV base is installed on the guide column. Above, the PDV probe is installed on the PDV base, and the position of the PDV probe can be adjusted indirectly by adjusting the position of the guide post in the PDV bracket.

A further technical solution is that a PCB sensor is also fixed on the bottom of the simulation cabin.

A further technical solution is that the pressure testing system includes a pressure sensor, and the pressure sensor is installed on a sensor base.

The present invention also provides an experimental method for an anti-knock test device, which is characterized in that the test device is fixed, the sample to be tested is placed above the cabin end cover of the test device, and then the explosive assembly is assembled on the cabin end cover , after the explosive is ready, the attenuation effect of the sample on the shock wave is obtained through the analysis of the test data.

The distance between the sensor in this application and the tested test sample can be adjusted arbitrarily through the sensor bracket, which can adapt to the requirements of different test scenarios. At the end of the sensor bracket, the corresponding base can be replaced according to different sensor types, which can be adapted to the installation of various types of sensors.

The PDV velocity measurement system in the device is mainly used to test the velocity characteristics of the back surface of the sample after the explosion shock, and the pressure test system is mainly used to test the pressure value inside the cabin after the explosion shock wave is attenuated by the sample. Fix the test device, place the sample to be tested above the chamber end cover of the test device, then assemble the explosive assembly on the chamber end cover, detonate the explosive when ready, and obtain the attenuation effect of the sample on the shock wave through test data analysis.

Compared with the prior art, the present invention has the following beneficial effects: the present invention uses brackets to perform flexible positioning and installation on the end of the test system, and can continuously change the sensor installation type, installation distance, etc. according to different usage scenarios, and the anti-knock test device is integrated A variety of advanced testing technologies have been adopted, and the joint diagnosis method is used to comprehensively evaluate the anti-knock effect, which has the advantages of simple operation and good reliability.

Description of drawings

Fig. 1 is the overall structure schematic diagram of testing device of the present invention;

Fig. 2 is the structural representation of sensor support of the present invention;

Among them, 1-chamber end cover, 2-sample, 3-PDV probe, 4-PDV base, 5-fixture, 6-second nut, 7-bolt, 8-guide column, 9-pressure sensor, 10-sensor Base, 11-sensor bracket, 12-PDV bracket, 13-first nut, 14-PCB sensor, 15-analog cabin, 16-different types of sensors.

Detailed ways

The present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Fig. 1-Fig. 2, the present invention provides a kind of anti-knock test device, comprises simulated cabin, cabin end cover and test system, and its main components are: cabin end cover 1, sample 2, PDV probe 3, PDV Base 4, clamp 5, nut 6, bolt 7, guide column 8, pressure sensor 9, sensor base 10, sensor bracket 11, PDV bracket 12, special nut 13, PCB sensor 14, simulation cabin 15.

The bottom end of the simulation cabin 15 is prefabricated with a sensor bracket 11 installation hole, and the sensor bracket 11 is fixed on the simulation cabin 15 by the first nut 13. The lower end of the sensor bracket 11 is prefabricated with threads, and the sensor bracket can be adjusted arbitrarily by adjusting the position of the first nut 13 11 and the relative position of the simulation cabin 15, the sensor bracket 11 adopts a hollow design, so that the test cable can be connected to the simulation cabin 15. The sensor base 10 is screwed to the sensor bracket 11 , and the sensor base 10 has corresponding interfaces with different types of sensors 16 . Various types of sensors 16 are installed on the sensor base 10 , including the pressure sensor 9 . The PDV bracket 12 is fixed on two sensor brackets 11, the guide column 8 is installed on the PDV bracket 12, the PDV base 4 is installed on the guide column 8, and the PDV probe 3 is installed on the PDV base 4. By adjusting the guide column 8 in The position in the PDV bracket 12 can indirectly adjust the position of the PDV probe 3 . The PCB sensor 14 is separately fixed at the bottom of the simulation chamber 15 due to its high height.

The fixture 5, the second nut 6, and the bolt 7 form a simple clamping device. The upper end of the simulation cabin 15 extends outwards from a flange, and the cabin end cover 1 and the sample 2 can be installed and fixed on the simulation cabin 15 with the simple clamping device.

During the test, the tooling is first assembled, the test system is properly connected according to the test requirements, and finally the explosive is installed on the upper end of the sample 2, detonated and the test data is recorded, the test site is cleaned and the data is processed. 15 Internal overpressure and other data analysis and evaluation of anti-knock effect of materials.

Although the present invention has been described here with reference to the illustrative examples of the present invention, the above-mentioned examples are only preferred implementations of the present invention, and the implementation of the present invention is not limited by the above-mentioned examples. It should be understood that those skilled in the art Many other modifications and embodiments can be devised which will fall within the scope and spirit of the principles disclosed in this application.

Claims (8)

1. The utility model provides an antiknock testing arrangement, its characterized in that, includes simulation cabin, cabin end cover and test system, be provided with clamping device on the cabin end cover, clamping device fixes the sample on the cabin end cover, and simulation cabin bottom of the body is provided with the mounting hole for the installation sensor support, the sensor support is fixed in simulation cabin bottom through first nut, installs the sensor base on the sensor support, and the sensor is installed on the sensor base.

2. The antiknock test apparatus of claim 1, wherein the test system is selected from any one or more of a PDV velocimetry system, a pressure test system, a backplate velocity test, an in-cabin overpressure test, and an in-cabin sound field test.

3. The antiknock test apparatus of claim 1, wherein the clamping means is comprised of a clamp, a second nut, and a bolt, the clamp securing the sample and the chamber end cap together and tightening by adjusting the position of the second nut.

4. The antiknock test apparatus of claim 1, wherein the lower end of the sensor bracket is pre-threaded, the relative position of the sensor bracket and the simulation chamber can be adjusted by adjusting the position of the first nut, and the sensor bracket is hollow so that the test cable can be conveniently connected to the simulation chamber.

5. The antiknock test device of claim 2, wherein the PDV velocity measurement system includes a PDV mount, a guide post, a PDV base, and a PDV probe, the PDV mount is fixed to the sensor mount, the guide post is mounted to the PDV mount, the PDV base is mounted to the guide post, the PDV probe is mounted to the PDV base, and the PDV probe is indirectly adjustable in position by adjusting the position of the guide post in the PDV mount.

6. The antiknock testing apparatus of claim 1, wherein a PCB sensor is further secured to the bottom of the simulation chamber.

7. The antiknock testing apparatus of claim 2, wherein the pressure testing system includes a pressure sensor mounted on a sensor base.

8. The experimental method of the anti-knock testing device is characterized in that the testing device is fixed, a tested sample is placed above a cabin end cover of the testing device, then an explosive component is assembled on the cabin end cover, the explosive is detonated after the testing device is ready, and the attenuation effect of the sample on shock waves is obtained through test data analysis.