A limit device for large-stroke joints of industrial robots

Abstract

The invention relates to a large-stroke joint limit device for an industrial robot, which comprises a base, the base is provided with an inner cavity; a rotating part, the rotating part is fixed in the inner cavity through a bearing; a movable stopper, the movable stopper is located In the inner cavity between the rotating member and the base; the first limit block used to limit the running stroke of the rotating member, the first limit block is fixed on the outer wall of the rotating member; used to limit the movable block The second limit block of the travel stroke of the block, the second limit block is fixed on the side wall of the base, and a The U-shaped groove is located in the inner cavity between the rotating part and the base. Since the present invention is provided with a movable stopper and a second limiter for limiting the running stroke of the movable stopper, it can conveniently realize that the joint movement stroke is within the range of 360°~720°, and the effective function of the joint can be greatly improved. The working stroke improves the flexibility and adaptability of industrial robots.

Description

technical field [0001] The invention relates to a large-stroke joint limiting device of an industrial robot, which belongs to the field of joint mechanical limiting structures of industrial robots. Background technique [0002] Mechanical limit technology is a safety guarantee technology for industrial robots in case of accidents. It can protect the robot itself from greater damage, ensure that the robot can still work normally after the exception is ruled out, and can also guarantee the operation to a certain extent. Personnel are not subject to further damage. Therefore, most joints of industrial robots will be designed with mechanical limit devices, especially those structures that need to pass cables in the joints. [0003] At present, there are mainly two types of mechanical limit technology: [0004] First, the hard stop method, such as figure 1 The shown base 1 and the rotating part 2 can rotate relative to each other, the base 1 is fixed with a limit block 4, and ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a large-stroke joint limit device for industrial robots, which overcomes the mechanical limit structure of industrial robots in the prior art, which causes the working range of rotating parts to be about 360°, which cannot achieve greater motion. range of defects

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