Cement stirrer with motor protection function

Abstract

The invention relates to a cement stirrer with a motor protection function and relates to the technical field of cement stirring. The cement stirrer comprises an impeller shaft, wherein uniformly distributed springs I are fixedly connected to the inner wall of the impeller shaft, clamping blocks are fixedly connected to the inner sides of the springs I, an output shaft is clamped in the middle ofthe impeller shaft, and a magnetic control device is fixedly connected to the middle of the output shaft. According to the cement stirrer with the motor protection function, through matched use of themagnetic control device and the clamping blocks, the clamping blocks are clamped in clamping grooves in the initial state, rubber bars are attached to the clamping grooves, piston blocks are locatedon the inner sides of air slots, when the impeller shaft cannot rotate, the magnetic control device is powered on, the piston blocks can move towards the outer side under the repelling function of like poles of magnetic stripes and the magnetic control device, air in the air slots can be squeezed, the rubber bars are swollen and squeeze the clamping blocks into the impeller shaft, at the moment, the output shaft is not clamped with the impeller shaft any more, the output shaft can rotate in the impeller shaft, the effect of protecting a motor is achieved, and the service life of the motor is prolonged.

Description

technical field [0001] The invention relates to the technical field of cement mixing, in particular to a cement mixer with motor protection function. Background technique [0002] Cement mixer is a machine that mixes cement, sand and gravel aggregate and water to make concrete mixture. It is mainly composed of mixing drum, feeding and unloading mechanism, water supply system, prime mover, transmission mechanism, frame and supporting device, etc. . [0003] During the use of the current cement mixer, the side of the crushed stone close to the inner wall of the tank is easily stirred to the inner wall by the edge of the impeller blade, and gets stuck between the impeller blade and the inner wall of the tank, damaging the impeller blade and reducing the service life of the impeller blade. After the impeller is stuck, it is also easy to burn out the motor. [0004] Therefore, we proposed a cement mixer with motor protection function to solve the above problems. Through the use...

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Problems solved by technology

[0003] During the use of the current cement mixer, the side of the crushed stone close to the inner wall of the tank is easily stirred to the inner wall by the edge of the impeller blade, and gets stuck between the impeller blade and the inner wall of the tank, damaging the impeller blade and reducing the service life of the impeller blade. After the impeller is stuck, it is easy to burn out the motor

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