Double-beam bridge type crane with safety brake

Abstract

The invention discloses a double-beam bridge type crane with a safety brake, which comprises a double-beam bridge type crane, wherein a ratchet wheel and a cam are evenly arranged on the external circumference of one end of a coiling drum of the double-beam bridge type crane, braking rings are evenly arranged on the internal circumferences of the ratchet wheel and the cam, a ratchet groove is evenly arranged on the external circumference of the ratchet wheel, an arc-shaped groove is evenly arranged on the external circumference of the cam, a supporting seat is fixed on an outer cover of the coiling drum, a pawl is hinged on the supporting seat by a shaft, the upper end of the pawl is provided with a roller, the roller contacts with the circular arc face of the cam, the lower end of the pawl corresponds to the ratchet groove on the ratchet wheel, the middle part of the pawl is provided with a spring, the other end of the spring is arranged on the outer cover of the coiling drum, a convex block is arranged on the pawl, and a travel switch is arranged on the supporting seat and corresponds to the convex block. When the brake of the double-beam bridge type crane fails or other faults occur in the brake of the double-beam bridge type crane and a heavy object glides down quickly, the safety brake is started and brakes the coiling drum of the crane quickly, thereby avoiding the generation of danger and ensuring the safety of the lives and the properties of people.

Description

Technical field: [0001] The invention relates to a double-girder bridge crane, in particular to a double-girder bridge crane with a safety brake. Background technique: [0002] With the development of the national economy, cranes are more and more widely used in industrial production. Since the lifting industry is a special industry, the safe operation of cranes is very important. People also pay great attention to the safety of cranes, but there are still many accidents every year. caused by the crane. [0003] The double-girder bridge crane has no safety braking system since its birth. The electric double-girder bridge crane drives the reducer through the motor, and the reducer drives the reel of the lifting hoist. , so as to realize the lifting of the heavy object, in order to make the heavy object stay in the air, a brake wheel and an electromagnetic brake are set at the shaft end of the motor and the shaft end of the reducer to realize the lifting and braking control o...

AI Technical Summary

Problems solved by technology

[0003] The double-girder bridge crane has no safety braking system since its birth. The electric double-girder bridge crane drives the reducer through the motor, and the reducer drives the reel of the lifting hoist. , so as to realize the lifting of the heavy object, in order to make the heavy object stay in the air, a brake wheel and an electromagnetic brake are set at the shaft end of the motor and the shaft end of the reducer to realize the lifting and braking control of the crane, but this braking The way may cause brake failure due to sudden power failure and other reasons. Once the brake fails or the parts of the reducer are damaged, the heavy object will lose control and slide rapidly, which will bring huge property losses to the enterprise, and more dangerously, seriously threaten people. Therefore, it is necessary to look for a device that can work without external power. When the crane brake is out of control or the reducer is damaged, it can start quickly and brake the crane drum to ensure the safety of people's lives and property. Set up the crane. A piece of insurance has become a difficult problem in the lifting industry

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