Dynamometer measurement standard apparatus

Abstract

The invention relates to a standard apparatus for force measurement, comprising a big hydraulic cylinder and a small hydraulic cylinder; wherein, a weight lifting mechanism is fixed on a piston rod of the small hydraulic cylinder, the weight is arranged below the weight lifting mechanism; the small hydraulic cylinder is communicated with the big hydraulic cylinder to form a communicating vessel by a communicating pipe, a force application mechanism is arranged on the piston rod of the big hydraulic cylinder and the force application mechanism comprises a top beam, a bottom beam and two connecting bars, a movable platform is arranged on two pillar stiffeners which are fixed on a pedestal of the standard apparatus and the movable platform is connected with the pillar stiffeners with a screw thread pair, a load-bearing surface is arranged under the movable platform, another load-bearing surface is also arranged on the upper surface of the bottom beam of the force application platform, and the two load-bearing surfaces correspond with each other. In the invention, by means of static press ram-cylinder system, the Pascal's principle is adopted, a small force value is amplified to a standard large force value, thus reducing the effect of friction force to the maximum extent; furthermore, measurement correction, checking, definition and rating can be carried out on a force sensor with large force value accurately, thus being beneficial to major scientific research projects.

Description

technical field [0001] The invention relates to a standard device of a metering device, in particular to designing a standard device for force measurement. Background technique [0002] Force is an important physical quantity, and its accurate measurement and control are widely used in modern manufacturing, national defense and engineering technology. [0003] In the development of modern science and technology, industrial automation control of the manufacturing process and high-quality assurance of products, research on the mechanical properties of new materials, engineering quality assurance in water conservancy and construction departments, engine performance research in modern aerospace technology, modern weapons and equipment Accuracy, safety and reliability, research on the dynamic performance of ships, aircraft and launch vehicles, and technical transformation of traditional departments such as metallurgy, chemical industry, energy, and shipbuilding are inseparable fr...

AI Technical Summary

Problems solved by technology

[0004] At present, the force measurement standard devices used to calibrate and check the accuracy of sensors are all suitable for small ranges. For sensors with large force values, it is impossible to apply a very large standard force. The sensor cannot be calibrated, and generally only calibrates its small force value range, and then infers the accuracy of the large force value range based on experience

In this way, it is difficult to guarantee the accuracy of the large value range of the sensor after calibration.

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