A test bench for micro-vibration dynamic characteristics of hydraulic support

A characteristic testing, hydraulic support technology, applied to vibration measurement in solids, vibration measurement, measurement device, etc., to shorten the R&D and production cycle, avoid slippage, and move flexibly and conveniently.

Active Publication Date: 2021-01-12
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing six-degree-of-freedom correlation platform lacks the simulation of the vibration attitude of the oblique angle, so we provide a test bench for the micro-vibration dynamic characteristics of the hydraulic support

Method used

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  • A test bench for micro-vibration dynamic characteristics of hydraulic support
  • A test bench for micro-vibration dynamic characteristics of hydraulic support
  • A test bench for micro-vibration dynamic characteristics of hydraulic support

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] Such as Figure 1-Figure 3 As shown, a test bench for micro-vibration dynamic characteristics of a hydraulic support includes a foundation platform 1 and a driving leg 2, and the driving leg 2 is bolted to the foundation platform 1 through a lower universal joint 3 at the bottom, and the driving leg The legs 2 are bolted to the moving platform 5 through the upper universal joint 4 at the top. A first pin orifice plate 6 is arranged in the middle of the bottom end surface of the moving platform 5, and a lifting cylinder 7 is arranged on the first pin orifice plate 6 to lift The oil cylinder 7 is a two-stage telescopic single-acting hydraulic cylinder, and the lifting oil cylinder 7 runs through the moving platform 5, and the top of the piston rod of the lifting oil cylinder 7 is connected with the middle part of the bottom end of the lif...

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Abstract

The invention discloses a hydraulic bracket micro-vibration dynamic characteristic testing bench. The hydraulic bracket micro-vibration dynamic characteristic testing bench comprises a foundation platform and driving legs; the driving legs and the foundation platform are in bolted connection through lower universal joints at bottom ends; the driving legs and a movable platform are in bolted connection through upper universal joints at top ends; a first pin hole plate is arranged at the middle part of a bottom end surface of the movable platform, a lifting oil cylinder is arranged on the firstpin hole plate, and the lifting oil cylinder penetrates the movable platform; the top of a piston rod of the lifting oil cylinder is connected with the middle part of the bottom end of a lifting platform through a second pin hole plate; first support beams are arranged at two sides of the lifting oil cylinders at the lifting platform, one end of the first support beam is connected with a second support beam through a third pin hole plate, and the second support beam is fixedly arranged at the bottom end of the lifting platform. Through the arrangement of the lifting mechanism, the adjusting onvarious inclined poses of a to-be-tested hydraulic bracket in a certain space range can be realized, and the testing bench has important significance for researching hydraulic bracket micro-vibrationproblem in an inclined tunnel and eliminating production safety loophole.

Description

technical field [0001] The invention belongs to the technical field of space positioning and multi-directional motion simulation devices, and in particular relates to a test bench for micro-vibration dynamic characteristics of a hydraulic support. Background technique [0002] In underground coal mining, hydraulic support is an essential equipment for working conditions. During the working process of thin coal seam shearer, the physical properties of coal and rock will change unevenly, and its thickness will also change. , resulting in the impact load of the cutting part of the main working part of the shearer, resulting in vibration of the shearer. This vibration will bring micro-vibration of a certain frequency to the hydraulic support at the same time, thus making the supporting effect of the hydraulic support on the rock formation unstable, and bringing greater safety hazards to production. Therefore, it is of great significance to analyze the vibration stability of hyd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H1/12
CPCG01H1/12
Inventor 郭辰光张李原李强徐曼成
Owner LIAONING TECHNICAL UNIVERSITY
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