A hydraulic system of a rack and pinion lifting device
A hydraulic system, rack and pinion technology, applied in the field of hydraulic systems, can solve problems such as shock, vibration, and lack of exhaust function, and achieve the effect of reducing danger and preventing shock and vibration
Active Publication Date: 2017-09-01
WUHAN MARINE MACHINERY PLANT
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Problems solved by technology
[0005] Since the hydraulic system of the rack and pinion lifting device is in operation, the hydraulic oil will be mixed with air, and the hydraulic system of the existing rack and pinion lifting device does not have an exhaust function, so the air in the hydraulic oil cannot be removed, so , hydraulic oil mixed with air will produce noise, vibration and shock during operation, seriously affecting the stability of the rack and pinion lifting device
Method used
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Embodiment
[0028] The embodiment of the present invention provides a hydraulic system of a rack and pinion lifting device, the hydraulic system includes: a hydraulic pump assembly 1, a main control valve group 2, a plurality of motor control assemblies 3 and a plurality of exhaust gas valves located at the highest point of the pipeline Valve 4, each motor control assembly 3 includes: motor balance valve group and two-speed motor control valve group, the main control valve group 2 includes: two-position two-way proportional reversing valve 5, the first cartridge valve 6, the second Cartridge valve 7, third cartridge valve 8, fourth cartridge valve 9, fifth cartridge valve 10, first two-position four-way electromagnetic reversing valve 11, second two-position four-way electromagnetic reversing valve 12, Two-position two-way reversing valve 21 and relief valve 22.
[0029] The oil outlet of the hydraulic pump assembly 1 communicates with the oil inlet of the two-position two-way proportiona...
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The invention discloses a hydraulic system of a gear and rack lifting device, belonging to the field of oil drilling machinery lifting systems. The hydraulic system of the gear and rack lifting device comprises a hydraulic pump component, a main control valve group, multiple motor control components and multiple vent valves located on the highest points of pipelines; each motor control component comprises a motor balanced valve group and a two-speed motor control valve group; and the main control valve group comprises a two-position two-way proportional directional valve, a first cartridge valve, a second cartridge valve, a third cartridge valve, a fourth cartridge valve, a fifth cartridge valve, a first two-position four-way solenoid reversing valve, a second two-position four-way solenoid reversing valve, a two-position two-way reversing valve and an overflow valve. Automatic venting of the hydraulic system is realized through the vent valves, so that no air exists in hydraulic oil; impact and vibration of the system caused by air are prevented; and the dangerousness of the hydraulic system is reduced.
Description
technical field [0001] The invention relates to the field of petroleum drilling machinery lifting systems, in particular to a hydraulic system of a rack and pinion lifting device. Background technique [0002] Since oil is an important energy resource of the country, it has always been regarded as a strategic resource for all countries to compete for. More and more oil drilling machines are used in oil-rich land and sea areas. As an important part of oil drilling machinery, the performance of the drilling machinery lifting device directly affects the use of oil drilling machinery, thereby affecting economic benefits. [0003] The commonly used lifting device for drilling machinery is a rack and pinion lifting device. The rack and pinion lifting device includes a motor with a brake, a reducer, a pinion installed on the output shaft of the reducer and a lifting mechanism. The rack is fixed and used as a supporting point , The pinion is rotated through the motor drive and the ...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 刘杰张玲珑黄冠乔刘利明毛炳坤
Owner WUHAN MARINE MACHINERY PLANT