Speed change high-energy-level windlass system

Abstract

The invention discloses a speed change high-energy-level windlass system. The system comprises a foundation control module and a speed change control module; the foundation control module comprises afirst hydraulic pump communicating with an oil source, a brake control device for controlling start of a windlass brake, a mechanical hooking control device for controlling start of hooking, a first control device for controlling hooking or descending, and a pressure source for providing pressure to the first control device; the foundation control module further comprises a first valve, an air source for providing low-pressure control, a disc brake for windlass braking, a relay valve and a second valve; and the speed change control module comprises a hydraulic pump, a second control device, afourth valve, a fifth valve, a sixth valve, a second buffer valve, a first clutch device and a second clutch device. The system has the advantages of reliable performances, high efficiency, high loadand flexible operation.

Description

technical field [0001] The invention relates to a winch system, in particular to a variable speed and large energy level winch system. Background technique [0002] In the prior art, the dynamic tamping machine is a machine that needs to compact loose soil in construction engineering. The working principle is to repeatedly lift the rammer to a certain height, then lower the rammer, and the freely falling rammer compacts the loose soil. . At present, there are three kinds of transmission devices for dynamic compactors, one is pure mechanical transmission, the other is pure hydraulic transmission, and the other is machine-hydraulic integrated transmission. Mechanical tamping machine: The hoisting, walking, and slewing mechanisms of the mechanical fingers are all mechanical. Disadvantages: large size, inconvenient disassembly and assembly, poor safety and banned from many construction sites, advantages: good reliability. Hydraulic dynamic compaction machine: The hoisting, wa...

AI Technical Summary

Problems solved by technology

Disadvantages: low transmission efficiency, high failure rate, difficult maintenance and high technical skills required by maintenance personnel

The disadvantages are: 1. The engine and hoist are arranged horizontally and parallel, the operation platform is super wide, the volume is increased, and the equipment layout of the operation platform is not compact, which cannot meet the needs of different operation platforms. Such an arrangement will cause poor reliability and stability of the operation platform

2. The engine is located in the middle of the operating platform, which is very inconvenient for installation and maintenance

3. The power of the engine is transmitted to the first hydraulic pump, which needs to pass through the hydraulic coupling, resulting in a decrease in transmission efficiency

Manual braking will make the operator highly nervous, and it is prone to early braking (braking when heavy objects such as rammers are not on the ground) or delayed braking (braking is not in time after heavy working objects such as rammers fall to the ground); early braking It will cause the wire rope to break or even pull the winch out of the equipment platform, causing a safety accident; delaying the braking will cause the winch to continue to rotate and throw the wire rope out, causing the wire rope to fall to the ground and be thrown out of the pulley and other faults; and for underground holes In the dynamic compaction operation, the construction cannot be carried out because the operator cannot visually see the landing of the rammer

However, the automatic braking system controls the amount of rope released by controlling the number of rotations of the winch itself. Since the system sets the length of the steel wire rope that is lowered for each action, it changes according to the program setting, and it is constant every time. Due to the different softness and hardness of the ground in the working condition, the sinking depth of each tamping hammer is different, so there are situations where more or less is released, and the braking requirements of the hoist under this working condition cannot be met.

Images