A double-coil lever type block brake

Abstract

The invention relates to a double coil lever type block brake. The double coil lever type block brake comprises a brake body, a movable plate and a friction plate, wherein the friction plate is fixed on the lower surface of the movable plate, the upper surface of the middle part of the brake body is provided with a first lug, a notch with a downward opening is formed in the middle of the first lug and the lower part of the brake body is provided with a static plate in which an induction coil is fixed; a lever steel plate is arranged above the static plate, the lever steel plate comprises a first sheet bar and a second sheet bar, the outer ends of the first sheet bar and the second sheet bar are respectively located above the two induction coils, and a pressing device is arranged between the pressing plate and the upper surfaces of the inner ends of the first sheet bar and the sheet bar; the movable plate is connected with the lower part of the static plate through a second bolt, the middle part of the movable plate is provide with an upwards extending second lug, and the upper end of the second lug penetrates through the static plate and are propped against the lower surface of the middle part of the lever steel plate. The double coil lever type block brake provided by the invention is low in cost and large in braking force, and does not need to frequently regulate the brake clearance.

Description

technical field [0001] The invention relates to a brake structure, in particular to a double-coil lever type block brake. Background technique [0002] At present, friction brakes with power-off braking are commonly used in hoisting equipment. This kind of brakes can realize smooth parking, fast starting and safe braking when power is off. The main types are: double-push brakes, shaft brakes, disc brakes, etc. Brakes, block brakes (also known as plate brakes), etc., among which block brakes are the most widely used. In order to offset the pressure of the brake blocks on the brake wheel shaft, they are usually used in pairs and installed on both sides of the motor. [0003] The elevator brake standard requires that when the elevator stops running, a single brake should be able to ensure that the car remains stationary and its position remains unchanged under 125% of the rated load. Due to the gradual evolution of drive components in modern hoisting equipment to direct drives...

AI Technical Summary

Problems solved by technology

[0004] The existing friction brake for power-off braking wears out the brake pads during use, and it is necessary to frequently adjust the gap between the moving and static plates (the process is relatively complicated), otherwise there will be great safety hazards. At the same time, according to the size of the motor torque, the design The corresponding size of the brake, but the volume of the brake required for the motor of the larger model is too large, and the cost is also higher

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