Hydraulic shock absorber and load simulator for operating mechanism using the shock absorber
A technology of hydraulic buffer and operating mechanism, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of complex structure of the simulated load device, and achieve the effect of simplifying the structure, reducing the external volume and simplifying the overall structure.
Active Publication Date: 2019-09-06
平高东芝(河南)开关零部件制造有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a hydraulic buffer to solve the technical problem in the prior art that it is necessary to configure a counterweight group and a buffer cylinder to meet the requirements of the simulated load test, resulting in a complex structure of the entire simulated load device; at the same time, the present invention also provides A load simulation device for an operating mechanism using the above-mentioned hydraulic buffer
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[0021] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0022] The specific embodiment of the load simulation device for the operating mechanism provided by the present invention is as figure 1 , figure 2 As shown, the load simulation device in this embodiment includes a frame. The frame includes a lower support base 1 and an upper support base 2 fixedly assembled with the lower support base 1 through a flange connection structure 7. The upper support base 2 is provided with a The installation seat of the operating mechanism 6 to be tested is fixedly placed, and the upper support seat 2 is also provided with a buffer 3 for providing a simulated load to the output part of the operating mechanism, and the buffer 3 simulates the load of the circuit breaker, thereby realizing the Load simulation test of operating mechanism.
[0023] In this embodiment, the buffer 3 includes an inner cylinder body 35 and an out...
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The invention relates to a hydraulic buffer device and a load simulation device for an operation mechanism and using the buffer device. The load simulation device comprises a framework, wherein a mounting base for placing a to-be-tested operation mechanism and the hydraulic buffer device are arranged on the framework; the hydraulic buffer device is used to be connected with an output part of the operation mechanism to provide a simulation load; the hydraulic buffer device comprises a cylinder body, and a piston is assembled in the cylinder body and is provided with an external connecting rod; the piston and the cylinder body are in clearance fit to form a flow through gap; the flow through gap comprises an equal-diameter gap and reducing gaps, the equal-diameter gap is formed between a middle straight line segment and the piston and maintains the constant size in the piston moving process, and the reducing gaps are formed between damping sections at both ends and the piston and are gradually reduced in a direction away from the middle straight line segment in the piston moving process; the external connecting rod on the piston of the hydraulic buffer device is in transmission connection with the output part of the to-be-tested operation mechanism in the use process. The load simulation device has the advantages that the structure of the whole load simulation device is effectively simplified, and the contour size of the load simulation device is reduced.
Description
technical field [0001] The invention relates to a hydraulic buffer and a load simulation device for an operating mechanism using the buffer. Background technique [0002] The main motion characteristics of the circuit breaker are provided by the operating mechanism. The motion reliability of the operating mechanism directly affects the mechanical characteristics of the circuit breaker, including opening and closing time and speed. Therefore, the operating mechanism installed on the circuit breaker should Carry out the corresponding running-in test in the mechanism manufacturer to avoid unqualified operating mechanism leaving the factory. At present, the running-in test of the operating mechanism is usually carried out on the test piece circuit breaker, but there are many problems in this way of directly testing on the test piece circuit breaker, the test piece circuit breaker occupies a large area, and the efficiency is relatively low. Low, and the universality of the test ...
Claims
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IPC IPC(8): G01N3/12
Inventor 王明杰高旭李川
Owner 平高东芝(河南)开关零部件制造有限公司