Winding-type weight suspension device of foil steel strip

Abstract

The invention relates to a winding-type weight suspension device of a foil steel strip, mainly solving the technical problems of being beneficial to connecting operation and prolonging the service life of the steel strips, and the like. The winding-type weight suspension device is characterized in that a positioning shaft and an upper fixed shaft are fixedly arranged on a fixed frame, a lower fixed shaft is arranged on a suspension frame, an upper fixed groove and a lower fixed groove are arranged on the upper fixed shaft and the lower fixed shaft, and two ends of the foil steel strip respectively pass through in the upper fixed groove and the lower fixed groove, tensioned and fixed on the upper fixed shaft and the lower fixed shaft by passing through the positioning shaft. The winding-type weight suspension device is suitable for various torsion testing and calibrating devices and various precise metrological instruments with balanced property and weight suspension at two ends (or one end).

Description

Technical field: [0001] The invention relates to the testing and calibration of an instrument for measuring torque, in particular to a component of a torque standard device. Background technique: [0002] In the existing torque measuring device, the weight gravity loading suspension support device mainly adopts the traditional method such as the blade structure. , due to the requirements of strength and rigidity, the structure of the blade cannot be made into a pure straight line (generally the blade is an arc surface greater than 0.1mm), which makes the device require a very high level of uncertainty, to achieve It is very difficult. In summary of these factors, the weight gravity loading suspension support device of the existing device has high manufacturing cost and high technical requirements; the torque measuring device of the German National Laboratory (PTB) has a weight gravity loading suspension The supporting device adopts a bolt clamping structure, and its structu...

AI Technical Summary

Problems solved by technology

[0002] In the existing torque measuring device, the weight gravity loading suspension support device mainly adopts the traditional method such as the blade structure. , due to the requirements of strength and rigidity, the structure of the blade cannot be made into a pure straight line (generally the blade is an arc surface greater than 0.1mm), which makes the device require a very high level of uncertainty, to achieve It is very difficult. In summary of these factors, the weight gravity loading suspension support device of the existing device has high manufacturing cost and high technical requirements; the torque measuring device of the German National Laboratory (PTB) has a weight gravity loading suspension The supporting device adopts a bolt clamping structure, and its structure is characterized by two fixed splints on the fixed frame, a set of through holes are opened on the fixed splints, and corresponding holes for the fixed splints are respectively opened at both ends of the foil steel strip. Through holes, when assembling, the foil steel strip is stretched on the second fixed splint, and then clamped and fixed with bolts. This structure can simplify the manufacturing and installation process and reduce its technical requirements, thereby significantly reducing equipment and use costs. The main problem of the fastening structure is that the thickness of the clamped foil steel strip is small and the surface is smooth. Under the gravity of the weight, it will slide down after a short period of time. When the edge of the foil steel strip opening and the bolt outside After surface contact, because the contact surface is extremely small and the load is extremely large, the connection part of the foil steel strip will be damaged until it cannot effectively support the weight and it will be scrapped, and it will also increase the use cost for the user. The foil steel strip with the above structure Compared with the traditional structure, the fixing method has been greatly improved, but the bolt connection still has certain technical requirements and workload.

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