Hydraulic system of gear and rack lifting platform
A technology of hydraulic system and lifting platform, applied in the field of hydraulic system, can solve the problems of different oil pressure, inconsistent opening sequence of balance valve group, manufacturing error of pile leg and rack, etc.
Pending Publication Date: 2020-09-15
WUHAN MARINE MACHINERY PLANT
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Problems solved by technology
[0004] However, due to the manufacturing error of the leg rack, the load on each lifting unit will be different during the lifting process of the marine lifting platform, which will cause the opening sequence of the balance valve group of each lifting unit to be inconsistent, so that when the hydraulic system starts The oil pressure at the oil port of each hydraulic motor is different, which will cause a large impact on the hydraulic system controlling the lifting device during the start-up process
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[0024] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.
[0025] figure 1 It is a hydraulic principle diagram of a hydraulic system of a rack and pinion lifting platform provided by an embodiment of the present disclosure. Such as figure 1 As shown, the hydraulic system includes: a driving pump module, an oil tank 20 , a first pipeline 21 , a second pipeline 22 and a plurality of motor modules 3 .
[0026] Such as figure 1 As shown, the drive pump module includes a first drive pump 11, a two-position four-way valve 12, a hydraulic control port 131 of the first balance valve 13 and a second balance valve 14, and the oil inlet of the first drive pump 11 communicates with the oil tank 20 , the oil outlet of the first driving pump 11 communicates with the first oil port of the two-position...
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The invention provides a hydraulic system of a gear and rack lifting platform. The hydraulic system comprises a drive pump module, an oil tank, a first pipeline, a second pipeline and multiple motor modules. The drive pump module comprises a first drive pump, a two-position four-way valve, a first balance valve and a second balance valve. An oil outlet of the first drive pump communicates with a first oil port of the two-position four-way valve. A second oil port of the two-position four-way valve communicates with an oil inlet of the first balance valve. An oil outlet of the first balance valve is connected to the first pipeline. A hydraulic control port of the first balance valve communicates with a third oil port of the two-position four-way valve. An oil inlet of the second balance valve communicates with the third oil port of the two-position four-way valve. An oil outlet of the second balance valve is connected to the second pipeline. A hydraulic control port of the second balance valve communicates with a second oil port of the two-position four-way valve. A first oil port of each motor module is connected to the first pipeline, and a second oil port of each motor module isconnected to the second pipeline. By means of the hydraulic system, impacting borne by the hydraulic system in the start process can be reduced.
Description
technical field [0001] The present disclosure relates to the technical field of hydraulic control, in particular to a hydraulic system of a rack and pinion lifting platform. Background technique [0002] Offshore elevating platforms are generally suitable for operations in shallow sea areas. Due to their advantages of low cost, less steel consumption, unaffected by environmental conditions and high efficiency, they are widely used in offshore oil development. The lifting platform usually uses a rack-and-pinion lifting device with cylindrical legs to realize the lifting action. [0003] The lifting device in the related art includes a plurality of lifting units, and each lifting unit is driven by a hydraulic motor module. And each hydraulic motor module includes a hydraulic motor and a balance valve group. The hydraulic motor is used to control the rotation of the lifting gear to drive the lifting gear to climb or descend along the leg rack to realize the lifting action of t...
Claims
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IPC IPC(8): F15B11/17F15B13/06F15B19/00F15B20/00F15B1/02F15B21/08E02B17/08
CPCF15B11/17F15B13/06F15B19/00F15B20/007F15B1/024F15B1/021F15B21/087E02B17/0809
Inventor 刘利明阮长松刘杰
Owner WUHAN MARINE MACHINERY PLANT