Fall prevention brake device of inclined shaft transportation car

Abstract

The invention relates to a fall prevention brake device of an inclined shaft transportation car. The fall prevention brake device comprises a main pull rod, colliding iron, a clamping jaw, a support block, a holding jaw, a brake spring, a guide rod, baffle plate channel steel and a starting spring, wherein the colliding iron is installed on the main pull rod to divide the main pull rod into a front pull rod and a rear rod, and one end of the rear pull rod penetrates through the baffle plate channel steel and the starting spring to be connected with a retaining nut; the clamping jaw is connected with the support block, and the support block is hinged with the guide rod; the brake spring is installed on the guide rod, and the holding jaw is connected with the support block; the front pull rod of the main pull rod is connected with a car main-rope connecting device, is arranged at the center of a chassis of the transportation car, and bears the traction load of the whole car. The brake device adopts double braking modes of automatic braking and manual braking and solves the problem that the transportation car falls when traction is lost after hoisting equipment breaks down or a steel wire rope is broken. Meanwhile, a damping device is installed on the car to ensure that the transportation car overcomes the action of inertia force during braking and can steadily brake.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower, in particular to an anti-fall braking device for an inclined shaft construction transport trolley. Background technique [0002] At present, the domestic inclined shaft construction and transportation system is mainly: using one or two or one double-drum hoist to pull the transport trolley along the installed track in the inclined shaft to transport personnel, materials or equipment to the construction work surface. Due to the particularity of the inclined shaft construction, the upper and lower cross operations cannot be avoided. During the construction period, there are construction equipment and construction personnel on the working platform at the lower end of the inclined shaft. Therefore, the safety and reliability requirements of the transport trolley are extremely high. The existing traction system cannot fundamentally solve the accident that the wire rope breaks...

AI Technical Summary

Problems solved by technology

[0004] (2) When two hoists share a wire rope to tow the transport trolley, after the steel wire rope bypasses the balance pulley installed on the transport trolley, the two ends of the wire rope are respectively fixed on the drums of the two hoists. This traction method also has wire rope Risk of the transport trolley falling due to broken rope or winch failure

[0005] (3) In the system where two winches each use a wire rope to pull the transport trolley at the same time, a hydraulic cylinder for adjusting the asynchronous operation of the two hoists is installed on the transport trolley, and the pulling end of the wire rope is fixed on the hydraulic cylinder. Although the risk of wire rope breakage is reduced in the traction mode, it still cannot solve the risk of a sports car failure on the hoist

[0006] (4) The working conditions of a double-drum winch pulling two steel wire ropes to pull the transport trolley are similar to using two hoists to pull two steel wire ropes to jointly pull the transport trolley, and the risk of the transport trolley falling due to the failure of the sports car due to the winch is also unavoidable , but this traction method greatly reduces the asynchronous operation of the two wire ropes

[0007] During the construction of inclined shafts in the domestic hydropower engineering construction field, the traction system of the transport trolley cannot fundamentally solve the risk of the transport trolley falling due to loss of traction after the lifting equipment fails or the wire rope breaks

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