What are the specifications of the simple electromagnetic vibration testing machine manufacturers?
The mechanical vibration table is suitable for simulation transportation test of toys, electronics, furniture, gifts, ceramics, packaging and other products.
The vibration table is also called a vibration exciter or a vibration generator. It is a device that uses mechanical, electro-hydraulic, piezoelectric or other principles to obtain mechanical vibration. The principle is to input the excitation signal into a coil placed in a magnetic field to drive the workbench associated with the coil. The electric vibrating table is mainly used for vibration measurement above 10 Hz, and can excite a maximum pressure of 200 N. In the frequency range below 20 Hz, an electro-hydraulic vibration table is often used, in which case the nature of the vibration signal is controlled by an electric servo system. The hydraulic drive system gives a large displacement and impact force. The vibrating table can be used for the calibration of the accelerometer, as well as for the vibration performance measurement of the electroacoustic device and its vibration test. For different test objects and technical indicators, attention should be paid to the selection of vibration tables with different structures and excitation ranges. [1]
When the vibration test is performed on the vertical expansion table of the electric vibration tester, the test sample or the clamp may be larger than the dynamic vibration table of the electric vibration table. Therefore, the original table surface needs to be expanded. The common method is to install an auxiliary table (expansion table). When performing vibration tests, if some test samples require special installation, custom fixtures are required to meet the requirements of this test.
(3) Product features
â— After precise calculation and careful design, the table top has a firm texture, uniform surface and beautiful appearance.
â— The design of the countertop is scientific, the upper limit working frequency is high, and the installation is convenient.
â— The standard specifications are complete, and can also be customized according to customer requirements.
â— Magnesium alloy or magnesium alloy gravity casting.
The simulated automobile transportation test system reproduces the vibration environment during the driving of the test vehicle on the road. A method of sub-band proximity is used to simulate broadband random vibration. Each sub-band contains a main natural frequency and satisfies the power spectrum of the sub-band. The vibration parameters of the vibration level transport platform are consistent with the actual road spectrum, and the test bench rotation time is equal to the actual time.
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