This device is a microcomputer servo ring chain stretching correction machine, which is a specialized equipment developed for the stretching correction of mining ring chains. The supplier guarantees that the calibration machine provided complies with the requirements of this technical specification and relevant regulations, specifications, and standards. The calibration machine body adopts a dual oil cylinder horizontal structure, and the horizontal calibration machine body is separated from the control. The body is equipped with a push-pull protective net to ensure the safety of personnel during the testing process. The testing machine is suitable for working environments with temperatures ranging from 40 ℃ to -25 ℃. Noise, in accordance with national regulations, is around 50 decibels at maximum working load. It is recommended to use No. 46 hydraulic oil, which can be purchased in the market. No occupational injury to staff. The power supply adopts ordinary 380V three-way AC power supply and 220V power supply. The equipment should be used in a normal natural laboratory environment to avoid environmental dust pollution as much as possible.
Equipment related standards and specifications
1) GB/T2611 General Technical Requirements for Testing Machines
2) GB/T228.1 "Tensile test method for metallic materials at room temperature"
3) JJF1103 "Evaluation of Computer Data Acquisition System for Universal Testing Machine"
4) GBT 12718 "High strength circular chain for mining"
5) JJG139 "Verification Regulations for Tensile, Pressure and Universal Testing Machines"
6) Comply with the relevant provisions on noise and vibration in the Occupational Disease Prevention and Control Law (2014 edition).
7) Comply with the relevant provisions of the National Special Equipment Law
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