Main lifting brake system of windlass full-balance vertical ship lift

Abstract

The invention relates to a main lifting brake system of a windlass full-balance vertical ship lift. The system comprises a multi-steel wire rope windlass with counterweights in four lifting pints; two main lifting drums with brake discs and a controllable balance weight drum are respectively arranged in each lifting point; the two main lifting drums in each lifting point are coaxially connected, and are driven by a speed reducer; the speed reducer is connected with a synchronous shaft device; the four lifting points are annularly spaced by the synchronous shaft devices, and are synchronously connected; the speed reducer in each lifting point is electrically connected with a motor by a coupling; each controllable balance weight drum is provided with four pairs of first safety brakes; each main lifting drum is provided with six pairs of second safety brakes; an output shaft of the motor in each lifting point is provided with two pairs of working brakes; and the first safety brakes, the second safety brakes and the working brakes are driven by a hydraulic pump station. The main lifting control system improves the working stability.

Description

technical field [0001] The invention relates to the field of mechanical control, in particular to a hoisting type fully balanced vertical ship lift main lifting brake system. Background technique [0002] The 2×500t-class wet transport fully balanced steel wire rope hoist vertical ship lift of Shuikou Hydropower Station is the first fully balanced vertical ship lift designed, manufactured, constructed and installed by my country. It was commissioned and inspected in April 2003. The internal test flight was successful, and it passed the completion acceptance in November 2003. In April 2005, it was officially opened to the outside world. Shuikou ship lift has gone through more than ten years from design to operation. Years of operation practice has proved that some equipment often exposes design defects and needs to be improved, and some equipment products are beginning to age and need to be updated and technologically improved. The cabin of the wire rope hoist ship lift is su...

AI Technical Summary

Problems solved by technology

Since the main hoisting drum safety brake and the controllable drum safety brake of the original braking system share a set of control valves, the two cannot be controlled separately. The force is in a super-static state supported by four lifting points on each side in the longitudinal direction. During the leveling process, not only the force on the cabin is uneven, but also the difficulty of leveling the cabin is greatly increased.

Considering the effect of emergency braking, the original design was implemented by safety brakes, but after on-site debugging, due to the large number of safety brakes and poor braking synchronization, the actual use of working brakes has been implemented through graded voltage regulation accident braking control, so the working brakes Undertook the normal operation stop braking and accident emergency braking tasks of the ship lift, and its reliability directly affects the safe operation of the ship lift

The current working brake design has defects, such as rough manufacture, many leakage points, ineffective braking, long sliding distance, obvious wear of the brake pads, abnormal noise of the coupling with brake disc, which affects the reliability of the brake, and is very easy cause an accident

Images