Hydraulic braking device for hoisting winch

Abstract

The invention discloses a hydraulic braking device for a hoisting winch. The hydraulic braking device comprises a fixed frame, brakes, brake pads, a control valve and a hydraulic station; the fixed frame is arranged on the side edge of a rotating shaft of the hoisting winch, the number of brakes is two, the two brakes are symmetrically arranged on the two sides of the rotating shaft of the hoisting winch, the brake pads are arranged between the brakes and the rotating shaft of the hoisting winch, and are arranged to be fixedly connected with the brakes, the brake pads are arranged to be in contact connection with the rotating shaft of the hoisting winch, and the brake pads are arranged to communicate with the hydraulic station through the control valve. Therefore, the cost is reduced, andthe reliability and the safety are improved.

Description

[0001] 1. Technical field [0002] The invention relates to a hydraulic braking device for a hoisting winch, in particular to a hydraulic braking device for a hoisting winch suitable for a large-tonnage winch. [0003] 2. Background technology [0004] In mine production, the hoisting winch in the mining area is mainly responsible for the transportation of equipment and materials in the underground mining area of ​​the mine. With the improvement of mine mechanization level, underground fully mechanized mining, fully mechanized excavation equipment and supports are widely used, and large mechanical equipment is becoming more and more It often enters the mining area, so the hydraulic brake device of the lifting winch is a very important equipment. In the existing mine, in order to meet the requirements of transporting large and heavy mining equipment up and down the mountain in the mining area, in recent years, the main mining area under the mine Both the up and down hill hoistin...

AI Technical Summary

Problems solved by technology

[0004] In mine production, the hoisting winch in the mining area is mainly responsible for the transportation of equipment and materials in the underground mining area of ​​the mine. With the improvement of mine mechanization level, underground fully mechanized mining, fully mechanized excavation equipment and supports are widely used, and large mechanical equipment is becoming more and more It often enters the mining area, so the hydraulic brake device of the hoisting winch is a very important device. In the existing mine, in order to meet the requirements of transporting large and heavy mining equipment up and down the mountain in the mining area, in recent years, the main mining area under the mine Both the up and down hill hoisting winches use high-power dispatching winches (motor power is 55-90kw). Although the lifting capacity of the dispatching winch meets the requirements, it is found that the power of the brake oil pump of the original winch brake system is too small during use (the braking force is 180N), and it is one-sided braking. The brake adopts belt-type friction brake pads, uses the brake lever to transmit torque, and brakes by the friction generated by the brake pads and brake wheels. Due to the brake oil pump Constrained by the braking force, when lifting or lowering heavy objects such as fully mechanized mining equipment (such as hydraulic support weighing up to 11t), the original winch electromagnetic brake cannot meet the braking requirements, and the manual brake is also difficult to meet, especially when the winch suddenly loses power Or in the state of emergency stop, the braking system of the winch cannot achieve reliable braking, which will easily cause major vicious accidents such as sports cars, and bring difficulties to the transportation of large equipment in the mining area. Due to insufficient braking torque, many unsafe hidden dangers are caused

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