Swing fatigue test device
A technology of fatigue test and rocking motion, which is applied in the direction of measuring device, testing material strength by applying repetitive force/pulsation force, testing of mechanical parts, etc. It can solve problems such as large inertia and specimen damage, and improve response speed and cost Low cost, simple and convenient effect
Active Publication Date: 2015-09-09
TIANJIN AEROSPACE RELIA TECH
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Problems solved by technology
Since there is a vertical downward load on the specimen during its actual application, a counterweight must be used to simulate the load instead of the specimen in the test. inertia, causing unnecessary damage to the specimen
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[0038] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] see Figure 1-4 As shown, the swing fatigue test device includes a bracket 11, a driving mechanism, a rotation amplification mechanism, a transmission mechanism and a restraint mechanism, etc., wherein the driving mechanism and the rotation amplification mechanism are located between a pair of brackets 11, the bracket 11 is fixed on the foundation, and the driving mechanism It is used to output reciprocating linear motion, and is connected with the trans...
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The invention discloses a swing fatigue test device. The swing fatigue test device comprises a test piece loading mechanism used for fixing a test piece, a counterweight used for simulating a load which is vertically downward all the time, a flexible connection part whose upper and lower ends are fixedly connected with the test piece and the counterweight respectively, a drive mechanism used for outputting reciprocal rectilinear motions, a rotation amplifying mechanism used for converting the reciprocal rectilinear motions outputted by the drive mechanism into pendulum motions and carrying out amplification, a transmission mechanism used for transmitting the pendulum motions outputted by the rotation amplifying mechanism and driving the flexible connection part to carry out rocking motions so as to drive the test piece to carry out reciprocal rocking motions, and a restraint mechanism used for restraining the rocking motions which are transmitted by the flexible connection part to the counterweight into up and down motions. The swing fatigue test device has the characteristics of simple structure, low cost and convenient installation and the like and is capable of enabling a load to be more stable in rapid swinging in a process of a swing test and thus a phenomenon of destroying the test piece does not happen.
Description
technical field [0001] The invention particularly relates to a swing fatigue test device, which is mainly used in fatigue tests with heavy load, large swing angle, low swing frequency and long running time to complete the fatigue performance assessment of products. Background technique [0002] In public transportation tools such as high-speed rail and buses, rings or other handrail components are installed for passengers to use. During the movement of the car body, the rubber strip held by the lifting ring will swing. The maximum swinging frequency can be 1Hz, and the swinging angle is generally within ±30°. At the same time, the lifting ring will bear part of the body weight, which is about 25kg. vertical downward force. In order to ensure that the lifting ring can meet the use requirements within the life cycle, a fatigue test is required to test its reliability, so as to ensure the personal safety of passengers. [0003] The traditional test device mainly includes a br...
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IPC IPC(8): G01M13/00G01N3/32
Inventor 朱正邦李杰雷霆
Owner TIANJIN AEROSPACE RELIA TECH