Rotating joint and robot

Abstract

The invention relates to a rotating joint which comprises a first joint body, a second joint body, a rotating shaft, a bearing bush and a plurality of bearings. The inner ring of the bearing bush is in interference fit with the rotating shaft. The outer ring of the bearing bush is in interference fit with a first hinge hole. The two ends of the rotating shaft are symmetrically sleeved with the plurality of bearings. According to the rotating joint, the bearing bush and the rotating shaft are in micro-interference fit, when a machine operates abnormally (for example, when the machine bears an impact load or the bearing is invalid and jammed), an interaction force exists between the rotating shaft and the bearing bush, and when the interaction force can destroy the micro-interference fit between the rotating shaft and the bearing bush, the rotating shaft and the bearing bush can rotate relatively, and sliding friction occurs between the two. At the moment, the internal stress is converted into the form of kinetic energy and friction heat, the force acting between the rotating shaft and the bearing bush is buffered, the effect of protecting the machine joints is achieved, and the problems of damage and even breakage caused by sudden increase of the stress at the robot joint positions due to bearing failure or jamming or impact load bearing are solved.

Description

technical field [0001] The invention relates to the technical field of industrial robots, in particular to a rotary joint and a robot. Background technique [0002] Palletizing robots are already a relatively mature product in industry, and their application scenarios and cases are numerous. However, my country's industrial robot industry started late, and the technical support is relatively not so perfect, especially in the field of large-scale heavy-duty robots. The country is basically monopolized by foreign industrial robot industry giants such as ABB, Yaskawa, KUKA, and FANUC. In order to promote the development of the domestic robot industry, the state also strongly supports and continuously introduces favorable policies. [0003] The rotating joint of the robot is an important part of the robot. The existing robot joints will cause the stress on the rotating joint of the robot to increase suddenly after the bearing fails, gets stuck, or is subjected to an impact load...

AI Technical Summary

Problems solved by technology

[0003] The robot's rotating joint is an important part of the robot. The existing robot joints will cause the stress at the robot's rotating joint to increase suddenly when the bearing fails, gets stuck, or is subjected to an impact load, resulting in damage or even fracture.

In addition, the overall structural design of the robot is unreasonable, which also causes uneven force on the rotating joints of the robot, which shortens the life of the bearings and damages the rotating joints of the robot.

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