Mechanical overload protection device

Abstract

The invention relates to a mechanical overload protection device which comprises a driving gear shaft, an overload protection element and a driven gear ring. First transmission gears distributed in acircumferential direction of the driving gear shaft are arranged on the driving gear shaft; a first arc-shaped groove is formed between every two adjacent first transmission gears; arcs of every two adjacent first arc-shaped grooves are tangent; and the overload protection element is arranged on the driving gear shaft in a sleeving manner, and comprises a plurality of elastic cylinders. The drivengear ring is arranged on the overload protection element in a sleeving manner; second transmission gears distributed along a circumferential direction are arranged on an inner wall, close to the overload protection element, of the driven gear ring; a second arc-shaped groove is formed between every two adjacent second transmission gears; and arcs of every two adjacent second arc-shaped grooves are tangent. Each elastic cylinder is arranged between each first arc-shaped groove and the corresponding second arc-shaped groove, and the elastic cylinders are coaxial to center shafts of the first arc-shaped grooves and the second arc-shaped grooves. The mechanical overload protection device provided by the invention is simple in structure, can cut off the transmission of a torque during overload, and solves the problems that a tail end rotating element is damaged and a motor is burnt due to transmission blocking and motor stalling.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission, in particular to a mechanical overload protection device, in particular to an overload protection shaft capable of cutting off torque transmission when the transmission is stuck and the motor is blocked. Background technique [0002] In the field of mechanical transmission, the power generated by the motor needs to be transmitted by the transmission system. In industrial transmission, due to harsh working conditions or unexpected failures in the transmission link, it is inevitable that the transmission will be stuck and the motor will stall. At present, the transmission link basically uses a rigid direct-coupled transmission between the power source and the load. Once the transmission is stuck or the motor is blocked, it will often cause the motor to burn out, the reduction box to be damaged, and the end transmission parts to be damaged, which will not only cause serious economic l...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a mechanical overload protection device with a simple structure that can cut off the torque transmission when the load is overloaded, so as to effectively solve the transmission jam and the terminal rotation caused by the motor stall. parts damage and motor burnout etc.

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