Fastener fatigue test loading frame capable of adapting to various loading angles

Abstract

The invention discloses a fastener fatigue test loading frame capable of adapting to various loading angles. The fastener fatigue test loading frame comprises a bearing cross beam, two sliders, two support lug welding parts, two limit blocks and two fixing shafts, wherein the bearing cross beam is horizontally arranged, and rectangular square holes are bilaterally symmetrically formed in the bearing cross beam; the sliders are assembled in the rectangular square holes; the two fixing shafts penetrate through the two sliders respectively; top ends of the two support lug welding parts are connected with the bearing cross beam through the fixing shafts; tail parts of the fixing shafts penetrate out of the support lug welding parts and are equipped with retaining shaft sleeves; contact angles are formed at the bottom ends of the support lug welding parts; the two limit blocks are symmetrically arranged on the bottom surface of the bearing cross beam; side surfaces of the limit blocks are manufactured to form corresponding oblique angles; long bolts are arranged on the bottom surfaces of two ends of the bearing cross beam; nuts are arranged at bottoms of the long bolts and used for liming opening angles of the support lug welding parts. The fastener fatigue test loading frame has the beneficial effects of being convenient to adjust and facilitating improvement of the test efficiency.

Description

technical field [0001] The invention relates to a fastener fatigue test loading rack adapted to various loading angles, which is mainly used in the field of fastener testing equipment. Background technique [0002] Rail fasteners are important components in the track structure, and their main function is to maintain a reliable connection between the rail and the foundation under the rail. In order to verify its ability to ensure safe operation and compare the operating performance of different fasteners under the same conditions, it is necessary to conduct fatigue tests on fasteners in accordance with railway industry standards. The specific method is to assemble the fasteners on a single sleeper, use the loading frame to apply dynamic vertical force and lateral force to the fasteners on both sides of the sleeper, and simulate the actual force status of the fasteners. After a specified number of tests, Get test data. [0003] Since the fasteners are suitable for different ...

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Problems solved by technology

[0003] Since the fasteners are suitable for different line conditions, the vertical force and lateral force borne by the fasteners are also different. When the assembly fatigue test is carried out on the sleeper, the angle of the loading frame needs to be adjusted to simulate the stress of the fasteners under different line conditions. However, since the rail gauge after the fastener is assembled is a fixed value of 1435mm, adjusting the angle of the loading frame requires changing the position of the fixed axis. Considering the large force of the existing loading frame, the position of the fixed axis cannot be adjusted. A pair of loading frames can only be tested at one angle. In order to meet the assembly fatigue test requirements of different fasteners, the laboratory needs to prepare multiple loading frames, which not only takes up valuable laboratory space, but also increases costs. Necessary improvement of

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