Hydraulic pendulum force measuring mechanism

Abstract

The invention belongs to the technical field of a measuring device and relates to a hydraulic pendulum bob force measuring mechanism used for detecting pressure strength of a cement test block. The force measuring mechanism comprises an upper box body, wherein a pendulum rod shaft is rotatably arranged on the upper box body, a front end of the pendulum rod shaft penetrates through an outer side of the upper box body, a shaft diameter is fixed with a pendulum rod flange seat, a pendulum rod is fixed on the pendulum rod flange seat through a fastening bolt, the pendulum rod shaft is arranged on a shaft in the upper box body and is fixedly connected with a pendulum rod shaft seat through a taper bolt, two ends of a connection rod shaft are rotatably arranged on the pendulum rod shaft seat through a bearing respectively, two ends of an outer side of the connection rod shaft corresponding to the pendulum rod shaft seat are respectively provided with a pull board, each pull board is respectively arranged along a length direction of the upper box body and penetrates through the outer side of the upper box body, and end portions of the pull boards which penetrate through the outer side of the upper box body are fixed with the pendulum rod shaft seat. Through the force measuring mechanism, a largest force is enabled to change according to weight change of a pendulum bob, the force measuring mechanism is converted to a load indication mechanism through calculation to acquire a measurement result, and an upper limit of measurement can reach above kilotons.

Description

technical field [0001] The invention belongs to the technical field of measuring devices, and relates to a hydraulic pendulum force-measuring mechanism for testing the pressure strength of a cement test block. Background technique [0002] In the existing domestic mechanical force measurement technology, the hydraulic pressure testing machine for testing the compressive strength of the cement test block adopts the hydraulic spring force measurement. The spring force measurement mechanism is due to the fatigue of the spring, and the change of the elasticity of the spring will cause the change of the indication value, resulting in The measurement data is inaccurate, and the accuracy is not high, generally within ±2%, which cannot meet the high-precision detection requirements and long-term use, and the maximum force of the experiment is limited. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provid...

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Problems solved by technology

[0002] In the existing domestic mechanical force measurement technology, hydraulic pressure testing machines for testing the compressive strength of cement test blocks use hydraulic springs to measure force. Due to spring fatigue, changes in the elasticity of the spring will cause changes in the indication value, resulting in The measurement data is inaccurate, and the accuracy is not high, generally within ±2%, which cannot meet the high-precision detection requirements and long-term use, and the maximum force of the experiment is limited

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