An elevator safety brake

Abstract

The invention discloses an elevator safety brake, which comprises a base body, two brake arms, a screw rod, two brake shoes, a brake disc, two spring bodies, a spring scale, a brake rod, a plunger and an electromagnetic The main body of the brake is made of iron, and the bottom ends of the two brake arms are provided with a secondary braking mechanism, and the secondary braking mechanism includes a secondary brake shoe, a brake pad, a main connecting arm, a secondary connecting arm, an elastic Composed of bending mechanism and fixing bolts, the brake pad is arranged on the upper end surface of the secondary brake shoe, and the upper end surface of the brake pad is close to the annular side of the brake disc, by adding a secondary brake pad to the device Braking mechanism, clever use of the brake arm when closing the brake and encircling the brake disc for braking through the brake shoe, compressing the secondary braking mechanism forces it to bend upward and arch to contact the annular bottom surface of the brake disc to assist it Braking, so that the braking inertia force is evenly distributed, increasing the braking effect.

Description

technical field [0001] The invention relates to the technical field of elevator brakes, in particular to an elevator safety brake. Background technique [0002] The brake is an extremely important safety component of the traction elevator. At present, the brake on the elevator traction machine uses a brake composed of a spring and an electromagnet. At present, most elevators use an electromechanical friction type normally closed brake. The so-called normally closed brake is Refers to the brake that brakes when the machine is not working, and the brake is released when the machine is running. When the elevator brakes, it relies on the action of mechanical force to make the brake belt and the brake wheel friction to generate braking torque. When the elevator is running, it relies on electromagnetic force to make The brake is released, so it is also called electromagnetic brake. [0003] The brake is the basic device to ensure the safe operation of the elevator. It has strict ...

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide an elevator safety brake. The structural purpose of the device is to solve the problem of insufficient braking force when the existing brake equipment is in use, and the abnormal vibration of the equipment due to uneven force under the impact of a large inertial braking force. The parts of the equipment are easy to loosen, which increases the potential safety hazard of the equipment and increases the frequency of user maintenance. By adding a secondary brake mechanism to the device, the brake arm is cleverly used to brake when the brake is closed and the brake shoe brake is encircling the brake disc. , the compression of the secondary brake mechanism forces it to bend upwards and arch to contact the annular bottom surface of the brake disc to assist in braking, so that the braking inertia is evenly distributed and the braking effect is increased. When the brake disc needs to be repaired, install the elastic blade to start the debugging mode. The brake disc rotates slowly and contacts the elastic blade to scrape off the attached oil on the surface of the brake disc to improve the braking effect, so as to solve the problems raised in the above background technology

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