Automatic detection device for static stiffness of elastic backing plate under sleeper

Abstract

The invention discloses a device for automatically detecting the static rigidity of a resilient tie plate under a sleeper. The device comprises a testing machine base and a railway ballast plate on the testing machine base, wherein a loading steel plate is arranged above the railway ballast plate; a detected test sample is arranged between the railway ballast plate and the loading steel plate; a loading device and a compression amount acquisition device are arranged on the loading steel plate; the compression amount acquisition device comprises a vertical withdraw type measurement arm; a contact point is arranged at the front end of the vertical withdraw type measurement arm, and a measurement arm body is arranged at the rear end; the contact point is arranged at the lower end of the loading device and is in contact with the center of the loading steel plate; the rear end of the measurement arm is fixed on a bracket; the measurement arm is provided with a displacement sensor; the contact point is provided with a pressure sensor; the pressure sensor and the displacement sensor are respectively connected with a data acquisition and processing device. The device disclosed by the invention can simulate an actual supporting form and the stress state of a resilient sleeper; the detection device is convenient to mount, easy to operate and high in detection speed; the detection result is automatically calculated and stored, and data are accurate and objective; the real state of the resilient tie plate can be objectively reflected.

Description

technical field [0001] The invention relates to a detection technology for an elastic backing plate under a sleeper, in particular to an automatic static stiffness detection device for an elastic backing plate under a sleeper. Background technique [0002] In order to reduce the pulverization rate of the ballast under the railway sleeper, reduce the maintenance workload of the ballast bed, and improve the durability of the ballast, in heavy-duty railway lines, elastic pads are usually installed under the sleeper of the ballasted track to reduce the train operation. impact on the track bed. The static stiffness of the elastic backing plate under the sleeper is one of the important parameters in the track structure, and its value directly affects the application effect of the elastic sleeper. [0003] In the prior art, the detection method for the static stiffness of the elastic backing plate under the sleeper is: place an elastic backing plate sample of a certain size on the...

AI Technical Summary

Problems solved by technology

[0004] During the operation of the railway line, the elastic backing plate under the sleeper is laid on the bottom of the sleeper and supported on the gravel bed, and its stress state is the same as that of the elastic backing plate under the sleeper. There is a big difference on the base of the machine; in addition, when the load is applied to make the loaded steel plate tilt during the test loading process, the average value of the readings of the two dial indicators symmetrically arranged on the opposite sides of the loaded steel plate surface is difficult to obtain. Accurately reflect the compression of the elastic pad under the pillow

Images