Automatic test device and method of aviation circuit breaker fatigue life
A technology for fatigue life and automatic testing, which is applied in the testing of circuit breakers, measuring devices, and testing of machine/structural components, etc. It can solve the problems of poor flexibility, large impact, and large noise of the test device, and achieve high test speed and accuracy. , Simplify the test process, and test the comprehensive effect
Inactive Publication Date: 2008-12-24
TIANJIN UNIV
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Problems solved by technology
Since the number of fatigue life tests of aviation circuit breakers must reach more than thousands of times, the test period is long, and the manual method is labor-intensive, prone to fatigue, easy to remember the number of times, it is difficult to accurately control the test sequence, and electric shock may occur during the electrical life test Dangerous; the electromechanical method can only be used for a single product, the test device is poorly flexible, the mechanism is complicated, and cannot be automatically connected after the test is interrupted; the pneumatic method requires an air source, the mechanism is complicated, it is not easy to accurately locate, the impact is large during operation, the noise is large, and the test is also interrupted after the test is interrupted. Can't auto-continue
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[0020] Before starting the test of a type of aviation circuit breaker, if the aviation circuit breaker is not installed on the fixture, first select the calibration reference operation on the operation interface of the industrial computer IPC-610H, and the test device is limited by the origin of a fixed distance from the fixture The switch TZ-5101 is the reference position, and the computer controls the kinematic pair to reach the reference position from any position, and then returns to the corresponding distance according to the selected different models, and stops at the test starting position of the model. For the same type of product, only one calibration standard is required. In order to prevent misoperation of the calibration step during the test, causing the push-pull rod to forcibly drive the handle of the aviation circuit breaker to move beyond the stroke and damage the product, the through-beam photoelectric switch E3Z-T61 installed at both ends of the fixture can ju...
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The invention discloses a kind of fatigue and life automatic tester of the aviation breaker and its method. It belongs to the fatigue and life testing technique of the breaker. The tester includes a worktable, a base board, a servo system, a reducer, a lead screw, a slide block, a clamp holding the aviation breaker, a photoelectricity switch, a spacing switch, a computer, a clock and a data collecting card. The test method is as follows. Determine the test starting location of different type aviation breaker; carry out the fatigue and life test on the same type aviation breaker at the same time at certain time domain; carry out the fatigue and life test on the same type aviation breaker at the same time at different time domain; carry out the fatigue and life test on the novel type aviation breaker. The invention can carry out multi-specs aviation breaker test. The flexibility of the tester is perfect; the test is convenient and complete; the test speed and the precise are high. The automatic control simplifies the test process greatly and prevents the waste of manpower and material resources.
Description
technical field [0001] The invention relates to an automatic fatigue life test device and method of an aviation circuit breaker, which belongs to the fatigue life test technology of the circuit breaker. Background technique [0002] Aviation circuit breaker is one of the important equipment in the electrical system of aviation and spacecraft. It shoulders the dual tasks of control and protection. Through its timely and accurate on or off response, it can realize equipment protection or automatic control in case of overload or short circuit. Its reliability directly affects the safe operation of aviation and spacecraft power systems. The important indicators of reliability are mechanical life and electrical life, which are one of the most concerned parameters for manufacturers and users. [0003] The aviation circuit breaker has two action states of opening and closing. The purpose of the fatigue life test is to repeatedly perform the connecting-locking-unlocking-off working ...
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IPC IPC(8): G01M19/00G01R31/327G01M99/00
Inventor 曲兴华周松张福民李文婷
Owner TIANJIN UNIV