Pure water hydraulic drive system of lifting platform

Abstract

The invention discloses a pure water hydraulic drive system of a lifting platform. Deionized water is used as a hydraulic transmission medium. The pure water hydraulic drive system comprises a water pressure piston cylinder, a three-position four-way electromagnetic reversing valve, a proportional valve, an energy accumulator, a check valve, a hydraulic control check valve, a plunger water pump, a variable frequency motor, an overflow valve, a filter and a water tank. The movement state of the hydraulic cylinder is regulated in real time through the three-position four-way electromagnetic reversing valve and the proportional valve, and the movement speed of the lifting platform is precisely controlled. For the heavy load requirement of the lifting platform, the energy accumulator is used as an auxiliary power source, an energy accumulator unloading loop is designed, and the service life of the energy accumulator is prolonged while the installed power of the system is lowered. By means of the pure water hydraulic drive system, the pure water hydraulic technology is applied in the lifting platform, the special loop is designed for the specificity of water pressure components, and the pure water hydraulic drive system can be widely applied to high-temperature open fire radiation places and various lifting platforms under the flammable and combustible pollution-free environments and other environments.

Description

technical field [0001] The invention relates to a hydraulic lifting system, in particular to a pure water hydraulic drive system for a lifting platform. Background technique [0002] The hydraulic lifting platform is widely used in various engineering sites. As its core system, the hydraulic drive system has the following main features: 1) Ensure absolute safety and reliability during the lifting process. The lifting system generally carries a large load or is directly related to personal safety, so the hydraulic lifting system should ensure that no accidents will cause the heavy object to drop suddenly; 2) It can be locked reliably or locked for a certain period of time after lifting the heavy object; 3) The ascent and descent speeds are adjustable or partially adjustable. In order to ensure the comfort of personnel or avoid possible shocks, the lifting system should have good stability during the speed regulation process, and there should be no severe vibration shocks. ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a pure water hydraulic drive system for a lifting platform, which solves the two major problems of pollution and flammability in the traditional hydraulic lifting system in the background technology and ensures that the lifting platform can meet various requirements for its drive system. The use requirements of the lifting platform in the occasion

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