Floating disc brake for 1000m deep well hoist

Abstract

The invention discloses a floating disc brake for a hoist in a thousand-meter deep well, which comprises a brake disc, a main disc body, an auxiliary disc body and a floating structure. The main disc body includes a mechanical braking unit and a state monitoring unit. The unit includes brake shoe B, liner B, pressure sleeve, pressure plate, screw, brake cylinder body, brake piston, T-shaped piston, disc spring assembly and cylinder head, and the condition monitoring unit includes pressure sensor and disc spring seat sensor And the eddy current sensor, the sub-disc body includes brake shoe A and lining plate A, and the floating structure includes sliding pin, spring and bracket. The invention can dynamically monitor the brake positive pressure and gap between the brake shoe and the brake disc, the wear amount of the brake shoe and the fatigue fracture state of the disc spring, and can automatically compensate the wear of the brake shoe and self-align the brake disc in real time.

Description

technical field [0001] The invention relates to a floating disc brake suitable for hoisting in a thousand-meter-deep well. Background technique [0002] Coal is the dominant energy source in my country, about 63% of the energy is directly or indirectly derived from coal, but 53% of the domestic coal resources are buried deep below the strata of kilometers, and coal mining must be carried out with an ultra-deep shaft hoisting system. This ultra-deep shaft The lifting system is composed of a hoist, a lifting container, a lifting wire rope, and a disc brake system. [0003] The hoist is responsible for the important tasks of lifting coal, ore, lowering materials, lifting personnel and equipment, etc. Whether the mine hoist can operate normally and brake safely and reliably in emergency situations directly affects the safety of coal mine production and the life safety of miners. The hoist disc brake is a key braking component of mine hoisting equipment. Its braking force, brake ...

AI Technical Summary

Problems solved by technology

At present, the brakes of most mine hoists are installed symmetrically, and the two sides are loaded separately, which may easily lead to uneven force on the brake discs on both sides and uneven wear of the brake shoes on both sides, which will easily lead to premature failure of the disc brake device.

[0004] Disc brake devices for mine hoists include: Patent No. 200810155643.8 discloses a disc brake that monitors positive brake pressure. The brake positive pressure is monitored by a disc spring seat sensor, which cannot monitor brake shoe wear in real time and dynamically monitor fatigue. Fractured state; Patent No. 200910025508.6 discloses a reliable disc brake for a hoist, which adopts a two-oil chamber structure, in which the oil in the side pressure oil chamber is used to monitor the positive pressure of the brake, and the high-pressure oil in the pressure chamber can be compressed will lead to the hysteresis of the pressure transmission during the braking process of the brake shoe; the patent No. 201510584071.5 discloses a magnetic-motor coupling hoist disc brake with magnetic field regulation and friction, which adopts two coupling braking methods of friction and magnetic force to brake The disc exerts positive pressure, but it cannot monitor the wear of the brake shoe and the fatigue fracture characteristics of the disc spring in real time; the patent No. 201020555843.5 discloses a mining hoist disc brake status monitoring device, which is used for online monitoring of mine hoist disc brakes. Brake positive pressure, brake shoe clearance and fatigue fracture failure of disc spring, but cannot automatically compensate for fault conditions such as brake shoe wear

At the same time, none of the above-mentioned patents has a floating structure, but the disc brakes are separately installed symmetrically on both sides of the brake disc, resulting in uneven force on both sides of the brake disc, which in turn leads to uneven wear of the brake shoes of the symmetrical disc brake. Reduced reliability and service life of disc brakes

Therefore, a high-reliability floating disc brake device integrating monitoring and real-time regulation is still blank.

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