A rotary joint and robot

Abstract

The invention relates to a rotary joint, which comprises a first joint body, a second joint body, a rotating shaft, a bearing bush, and several bearings; the inner ring of the bearing bush is an interference fit with the rotating shaft; Ying fit; two ends of the rotating shaft are symmetrically sleeved with a number of bearings. The bearing pad and the rotating shaft of the present invention adopt a micro-interference fit. When the machine is not operating normally (such as being subjected to impact load or bearing failure and jamming, etc.), there will be an interaction force between the rotating shaft and the bearing pad. When this interaction When the force can destroy the micro-interference fit between the two, the rotating shaft and the bearing bush will rotate relative to each other, and sliding friction occurs between the two. At this time, the internal stress is converted into the form of kinetic energy and frictional heat, which buffers the force acting between the rotating shaft and the bearing bush, protects the joints of the machine, and solves the problem of bearing failure or jamming or impact load. , the damage or even fracture problem caused by the sudden increase of stress at the joints of the robot.

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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