Impact collision test system

1、 Product Overview

The WS-CJ-50 impact collision test system is mainly used as a means for products to meet design and quality control requirements. It is used to simulate the non repeated mechanical impact capabilities of electrical and electronic components, equipment, and other products during use and transportation, assess their functional reliability and structural integrity, and evaluate their adaptability to impact environments. It is also used for internal strength testing of microelectronic devices.

The WS-CJ-50 impact collision test system adopts pneumatic lifting, which has the advantages of smooth lifting and low noise. Air spring vibration reduction device reduces the impact on the surrounding environment. The high-pressure hydraulic brake device is used to overcome the additional impact of mechanical brakes on the test sample, ensuring reliable braking and no noise. At the same time, in the design of the WS-CJ-50 impact collision test system, multiple safety protection measures are considered, such as power-off protection function, safety interlock protection device, oil source standby unloading, etc., to ensure that the worktable of the equipment will not endanger personal, test piece and equipment safety due to accidental falls during operation.

Can conduct conventional and high-energy half sine wave impact tests to meet the requirements GB/T2423、GJB150.18A-2009、GJB360.23、GJB548B-2005、IEC68-2-27-2008、JJG541、JJG497 Waiting for standards.

2、 System working diagram

Control system based on Windows 2000/XP: fully automatic remote control interface, the operator only needs to input simple values, and the ShockDAQ series impact control measuring instrument can accurately complete the impact test;

Automatic control of lifting height: After the height setting is completed, the computer automatically controls the lifting height of the table, with high accuracy and good repeatability;

High performance aviation aluminum countertops: Aviation aluminum countertops have high strength and hardness, as well as a high first-order resonant frequency, low noise, and no clutter generation;

The most reliable braking system: a single braking force of up to 5000N, a safer positioning platform;

Multiple waveforms: By replacing different waveform generators, conventional waveforms such as half sine waves, back peak sawtooth waves, or square waves can be executed;

Easy to install: The equipment comes with a high-performance buffering and vibration isolation device, which does not require a dedicated foundation and is easy and reliable to install;

A comprehensive measurement system: The system has various waveform tolerance bands in its memory, making it easy for users to adjust and apply them, and automatically generating test reports after the end of the experiment;

Compatibility performance of the system: It can be compatible with various impact measurement and analysis software systems, providing users with more choices.

A comprehensive measurement system: The system has various waveform tolerance bands stored in memory, making it easy for users to adjust and apply. After completing the experiment, an automatic test report is generated. provide GB/T2423、GJB150.18A-2009、GJB360.23、GJB548B-2005、IEC68-2-27-2008、JJG541、JJG497 Waiting for the standard tolerance band.

3、 Technical parameters

4、 Working principle

The structure of the WS-CJ-50 impact collision test system is shown in Figure 3. It lifts the worktable to a set height by pneumatic driving. Its working principle is to lift the worktable and the test sample to the desired height, instantly lock the worktable, lower the lifting cylinder, and let the worktable fall freely. It collides with the waveform generator installed on the base, generating an impact waveform. The sensor installed on the worktable collects the waveform signal generated by the impact and transmits it to the analysis software, which displays it on the computer monitor. At the same time, the worktable will rebound, and the braking device will instantly activate to lock the worktable, avoiding secondary impact and completing the first impact test.

5、 Product composition

The WS-CJ-50 pneumatic impact collision test system consists of four parts: the impact platform, the drive system, the measurement and control system, and the waveform generator. The system composition diagram is shown in Figure 3:

5.1 Impact table body

The table body, as shown in Figure 2, consists of a worktable, high-precision guide column, base, airbag damping system, high-precision counting device, triggering mechanism, etc.

The locking and prevention of secondary impact of the WS-CJ-50 pneumatic impact collision test system after the worktable is in place are achieved by a hydraulic braking mechanism installed between the worktable and the guide column.

The lifting height of the workbench is measured by a photoelectric encoder component installed on the base. The photoelectric encoder measurement has high accuracy, strong anti-interference ability, and high reliability, ensuring the repeatability of the impact.

In order to reduce the impact force of the platform on the ground during the experiment, WS-CJ-50

The experimental system is designed with a vibration reduction system consisting of a large mass base and airbags. On the one hand, the vibration reduction system greatly reduces the impact force transmitted from the workbench to the ground (when the impact pulse is 6-30ms, the impact force on the ground is 10-30% of the original impact force). On the other hand, it also has a good high-frequency filtering effect on the impact waveform, making the impact waveform smoother.

The lifting height of the workbench is measured by an encoder sensor component installed on the base. The encoder sensor measurement has high accuracy, strong anti-interference ability, and high reliability, ensuring the repeatability of impact.

In order to reduce the impact force of the platform on the ground during the test process, the WS-CJ-50 impact test system is designed with a damping system consisting of a large mass base and airbags. On the one hand, the vibration reduction system greatly reduces the impact force transmitted from the workbench to the ground (when the impact pulse is 6-30ms, the impact force on the ground is 10-30% of the original impact force). On the other hand, it also has a good high-frequency filtering effect on the impact waveform, making the impact waveform smoother.

5.2 Drive System

The drive system provides power for the lifting and braking of the workbench, and completes the impact test together with the control system.

5.3 Measurement and Control System

The measurement and control system adopts the Shock DAQ series impact measuring instrument. Shock DAQ III is an impact measurement system based on the WINDOWS 7 operating system, which includes a computer, acceleration sensor, high-precision integrated data acquisition card, and other basic configurations.

The Shock DAQ series impact measuring instrument is mainly used to measure impact test parameters such as acceleration, pulse duration, and velocity changes during the impact process, and can print out all measurement data. The Shock DAQ III measurement software has a user-friendly interface, easy operation, and reliable system. For human and product safety, it has four protection functions: high-speed hydraulic braking system, constant pressure pause state at any time, software self-locking, safety pin and other protection functions. The software interface is shown in Figure 5.

5.4 Waveform Generator

There are two forms of half sine waveform generators: fixed pulse width half sine waveform generators and adjustable pulse width half sine waveform generators, as shown in Figure 6. The fixed pulse width half sine waveform generator is usually made of engineering rubber or cast polyurethane material, and can obtain various different impact pulse widths according to different combinations of hardness and thickness. In special circumstances, high-precision wool felt can be used as a substitute; The adjustable half sine waveform generator adjusts the extension length of the rubber part by rotating the outer cover, thereby changing the pulse width. The pulse width adjustment range is between 0.1-20ms, and with a fixed pad, it is easy to achieve larger pulse width adjustment;