Portable vibration excitation system for simulating rail operation
A portable, rail-based technology, applied in vibration testing, machine/structural component testing, measuring devices, etc., can solve the problems of heavy hammer method, such as large equipment, inflexible method, and difficulty in adjusting the magnitude and frequency of impact force. Cost, easy to install, easy to carry
Pending Publication Date: 2020-01-31
ZHEJIANG UNIV CITY COLLEGE
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Problems solved by technology
[0004] At present, the heavy hammer method is mostly used for the simulated rail impact test. The heavy hammer method has huge equipment, and it is difficult to adjust the magnitude and frequency of the impact force, and the method is not flexible enough.
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[0026] The specific embodiment of the present invention will be described in further detail below in conjunction with the accompanying drawings, but this implementation is not intended to limit the scope of protection of the present invention, and any similar structure and detail changes of the present invention should be included in the scope of protection of the present invention .
[0027] A portable vibration excitation system for simulating rail operation, including: a stepping motor and a gearbox (DX), an equipment support, an excitation device (JZ), and a clamping device (JJ). The clamping device (JJ) is easy to operate, safe and reliable, and the vibration frequency and vibration force of the vibration rod in the vibration device (JZ) are adjustable. The stepping motor and gearbox assembly (DX) includes a stepping motor 1, a motor base 2, a motor mounting bolt group 3, a shaft coupling 4, a gearbox 5, a gearbox mounting bolt 16, and a motor bracket mounting bolt 17. T...
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The present invention provides a portable vibration excitation system for simulating rail operation. The system comprises a stepping motor, a reduction gearbox, a support, a clamping apparatus and a vibration exciter. A vibration excitation apparatus is fixed on a to-be-tested rail by using the clamping apparatus. The stepping motor on the support averagely outputs power to two output shafts of the reduction gearbox by using the reduction gearbox. A single-tooth gear is installed at an end of each output shaft. The single-tooth gear continuously rotates to engage with teeth on a vibration excitation pole. The vibration excitation pole of the vibration excitation apparatus is driven to move upwards, and the vibration excitation pole is restored under action of a spring force, to impact theto-be-tested rail. A rotational speed of the stepping motor can be adjusted by using a controller, to implement different vibration excitation frequencies, and an impact force can be implemented by using a pre-compression amount of an adjusting spring. Advantages of the present invention are: a structure is compact and portable, an installation and using method is simple, reliability is high, on-site adjustment is convenient, and rail vibration excitation signals of different working conditions can be simulated.
Description
technical field [0001] The invention relates to the technical field of vibration excitation systems, in particular to an electronically controlled vibration excitation system, in particular to a portable electric loading system for simulating rail operation. Background technique [0002] my country's railway and subway construction has developed rapidly, and has achieved good economic and social benefits. As the transportation speed of rail transit continues to increase, the trial operation of the rails and the status monitoring after a period of use are important guarantees to ensure the safe operation of rail transit. The detection of the operating status and safety status of the rails is one of the problems that the rail sector needs to solve urgently. First, it is the most important thing to ensure the long-term safe operation of rail transit. [0003] The vibration of the rail under the excitation of the train or subway is the key content of detecting the running state...
Claims
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IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 陆倩倩邵威
Owner ZHEJIANG UNIV CITY COLLEGE