Wire cable transmission mechanism for use in mechanical arm

Abstract

The invention relates to a transmission with steel rope for mechanical arm, belonging to mechanical technology area. In the invention, transverse sections of big and small arms are hollow tube shape. V-shape groove structure is set on the driving shaft of small arm to wind the steel rope and two ends of small arm are installed at the root of big arm by bearings. The driving shaft of big arm is fixed at the root of big arm and is maintained with the driving shaft of small arm in the coaxial line. V-shape groove structure also is set on the driven shaft of small arm and the driven shaft of small arm is connected with the root of small arm. Two ends are installed on the top of big arm by bearing. The steel rope is winded between driving and driven shafts of small arm and maintains tightening condition and the end of steel rope is fixed on the small arm. The tightening device of steel rope is set among the inner of big arm, the driving shaft of small arm and the driven shaft of small arm in whole. The invention lessens load consumption in mechanical arm and improves the rigidity of transmission mechanism of steel rope and the accuracy of end movement. In view of the structure, the whole weight is lightened. The appearance is simple and clean.

Description

technical field [0001] The invention relates to a device in the technical field of machinery, specifically, a wire rope transmission mechanism for a mechanical arm. Background technique [0002] The joints of manipulators generally use a transmission mechanism that directly connects the motor, gear reducer, and joint shaft. This transmission mechanism requires the motor and gear reducer to be installed near the joints of the manipulator. The mechanism is simple but not compact, and the appearance is not clean. The particularly prominent disadvantage is that in a multi-joint manipulator, the transmission device such as the motor and gear reducer of the next-level joint becomes the load of the upper-level joint, which increases the requirements for the power and transmission components of the manipulator, thus causing the overall The increase in weight and internal consumption reduces the ability and efficiency of the external work of the mechanical arm. [0003] Found throug...

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the problem that the effective length of the steel wire rope changes or even loosens in the mechanical arm mechanism driven by the steel wire rope in the past, which makes the execution accuracy of the end of the mechanical arm difficult to control, and the tension adjustment device installed at the end of the steel wire rope cannot well control the tension of the steel wire rope. A wire rope transmission mechanism for a mechanical arm is provided

The invention has the characteristics of simple structure and light weight, no change in the effective length of the steel wire rope transmission, convenient adjustment of the tension force of the steel wire rope to improve the execution accuracy of the end of the mechanical arm, and solves the problems of the execution accuracy of the end of the mechanical arm driven by the steel wire rope.

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