Generalized force loading multi-dimensional force platform calibration device and its calibration method

Abstract

The invention relates to a generalized force-loading multidimensional fore-measuring bench calibration device and calibration method. The calibration device comprises a main calibration bench frame, a multi-dimensional force-measuring bench, a force applying mechanism, a first steel cable, a second steel cable and a sensing device. The main calibration bench frame is in an L shape; the multi-dimensional force-measuring bench is fixed at one side of the main calibration bench frame and a loading point is arranged; and the loading point, the first steel cable, the sensing device, the second steel cable and the force applying mechanism are connected successively. The force applying mechanism fixedly connected with the other side of the main calibration bench frame consists of a brake valve hand wheel, a first bidirectional screw rod, a connecting sleeve, a second bidirectional screw rod and a traction box, wherein the brake valve hand wheel, the first bidirectional screw rod, the connecting sleeve, the second bidirectional screw rod and the traction box are connected successively from top to bottom. The first bidirectional screw rod is provided with a fixed plate; and one end, in an inverted L shape of the fixed plate is connected with the main calibration bench frame fixedly and the other end is arranged by corresponding to the traction box. And a groove is formed in the bottom of the traction box and a traction sliding rod is arranged. According to the invention, forces and moments at multiple directions can be applied; and continuous vector force loading also can be realized, so that the error can be effectively reduced.

Description

technical field [0001] The invention relates to a technology in the field of mechanical instrument detection, in particular to a generalized force-loaded multi-dimensional force plate calibration device and a calibration method suitable for on-site calibration. Background technique [0002] The multi-dimensional force plate can measure the full force information in three-dimensional space, that is, three-dimensional force and three-dimensional torque information, and has been widely used in sports biomechanics, rehabilitation medicine and other fields. The measurement accuracy of the multi-dimensional force plate directly affects its application effect, so it must be calibrated before leaving the factory. [0003] Most of the existing multi-dimensional force plate calibration adopts single-dimensional loading. When single-dimensional force loading is used, the force or moment is only applied along one component axis at a time, so the efficiency is low. In order to improve e...

AI Technical Summary

Problems solved by technology

However, this technology has the following defects: 1) The force loading method is cumbersome, and the weight quality needs to be replaced continuously, which is inconvenient to operate; 2) When applying Fx and Fy, it is necessary to adjust the height of the calibration adjustment plate to keep the force line horizontal, and the operation is complicated; 3) The direction angle cannot be adjusted; 4) This device is not suitable for multi-dimensional force plate calibration that needs to load multiple loading points, nor is it suitable for large load loading

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