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Pure water hydraulic drive system of lifting platform

A driving system and lifting platform technology, applied in the direction of fluid pressure actuators, accumulator devices, servo motors, etc., can solve pollution, flammability and other problems, to improve safety, reduce installed power, and high reliability Effect

Active Publication Date: 2017-09-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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

Method used

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  • Pure water hydraulic drive system of lifting platform

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Embodiment Construction

[0012] as attached figure 1 As shown, the pure water hydraulic drive system of the lifting platform of the present invention includes: filter 1, plunger pump 2, frequency conversion motor 3, overflow valve 4, first two-position two-way reversing valve 5, one-way valve 6, first Proportional valve 7, accumulator 8, second two-position two-way reversing valve 9, hydraulic control check valve 10, second proportional valve 11, three-position four-way reversing valve 12, hydraulic cylinder 13, water tank 14.

[0013] Among them, the variable frequency motor 3 is connected with the plunger pump 2 to drive the plunger pump 2 to work, and the water inlet T of the filter 1 1 Connected with the water tank 14, the water outlet P of the filter 1 1 With the suction port T of the plunger pump 2 2 Connected, outlet P of plunger pump 2 2 Inlet P with overflow valve 4 3 , the water inlet P of the first two-position two-way reversing valve 5 4 , Water inlet P of check valve 6 5 , the contr...

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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. ...

Claims

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Application Information

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IPC IPC(8): F15B11/08F15B1/02
CPCF15B1/022F15B1/024F15B11/08F15B2211/20515F15B2211/8633
Inventor 徐兵宋李新张军辉岳艺明
Owner ZHEJIANG UNIV
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