CN102936889B - Hydraulic lifting system for safety brake protection control - Google Patents
Hydraulic lifting system for safety brake protection control Download PDFInfo
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- CN102936889B CN102936889B CN201210465793.5A CN201210465793A CN102936889B CN 102936889 B CN102936889 B CN 102936889B CN 201210465793 A CN201210465793 A CN 201210465793A CN 102936889 B CN102936889 B CN 102936889B
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Abstract
The invention relates to a hydraulic lifting system for safety brake protection control. The hydraulic lifting system is provided with an oil tank, a main control value assembly and a motor component. The main control valve assembly is communicated with the oil tank and the motor component through oil ports and comprises an upper cartridge valve, a left electromagnetic switch valve, a left sequence valve, a three-position four-way electromagnetic valve, a left proportioning speed-regulating valve, a right electromagnetic switch valve, a right sequence valve, a lower cartridge valve, an overflow valve and a right proportioning speed-regulating valve. One end of the upper cartridge valve is communicated with the oil tank and the overflow valve, the other end of the upper cartridge valve is communicated with the left electromagnetic switch valve and the right electromagnetic switch valve, the left electromagnetic switch valve is communicated with the left sequence valve and the left proportioning speed-regulating valve, the right electromagnetic switch valve is communicated with the right sequence valve and the right proportioning speed-regulating valve, the left sequence valve and the right sequence valve are communicated with the three-position four-way electromagnetic valve, the three-position four-way electromagnetic valve is communicated with the lower cartridge valve and the overflow valve, and the lower cartridge valve, the left proportioning speed-regulating valve and the right proportioning speed-regulating valve are communicated with the oil ports. The hydraulic lifting system has a stepless speed regulating function and high in pollution resistance, safety and reliability.
Description
Technical field
The present invention relates to a kind of hydraulic lifting system; the hydraulic lifting system that particularly a kind of safety arrestment protection is controlled; the control function that its brake adopting has makes the lifting of lifting gear safety and steady; the plug-in structure that it adopts can meet high-volume hydraulic system, and the contamination resistance of high-volume hydraulic system is stronger.This technology is " national high-tech research development plan (863 Program) subsidy " project patented technology.
Background technology
Jack-up unit is generally applicable to neritic province domain operation, and because it has, cost is low, steel using amount is few, not affected and efficiency advantages of higher by environmental working condition, is widely used in coastal ocean oil development.Hydraulic lifting system is as the key components of jack-up unit, and the quality of its function can directly affect safety and the result of use of jack-up unit.According to the knowledge of the applicant, be mainly divided into two kinds for the hydraulic lifting system of jack-up unit at present: pinion and-rack and hydraulic cylinder bolt-type.Applicant finds under study for action, the operating mode more complicated of pinion and-rack jacking system, in actual use, its speed reduction gear box engages continuity action during with spud leg tooth bar, can cause the spud leg action of lifting gear asynchronous, tooth bar discontinuity, thus directly threaten the safety work of jack-up unit, therefore need to improve the mode of braking of whole lifting gear, strengthen its reliability design.Jack-up unit workload is large simultaneously, and rising or falling speed is slow, more difficult to platform speed control ratio.
Chinese patent literature CN102011387A disclosed " from installed production platform hydraulic lifting system " (application number 201010196872.1) is the production platform hydraulic lifting system using in a kind of offshore oil production platform lifting process, it has 16 hydraulic cylinders, hydraulic control system and electrical control system, hydraulic control system has some cover main oil pump motor groups, electromagnetic relief valve group and 4 cover electro-hydraulic proportion reversing valve groups with main oil pump motor group equivalent amount, electrical control system has hydraulic cylinder travel checkout gear and programmable logic controller PLC, this invention adopts oil pump motor group, electro-hydraulic proportion reversing valve, import equalizing valve, the synchronous close-loop control scheme of the synchronous composition of rigidity of outlet equalizing valve and spud leg.This hydraulic cylinder bolt-type jacking system volume is little, inertia good, and transmission efficiency is high, but simultaneously this control system to have motion discontinuous, impact larger, the shortcoming such as speed is slower.
Summary of the invention
The object of the invention is, be for the existing existing problems of the hydraulic lifting system for jack-up unit and not enough, improves, and proposes the hydraulic lifting system that a kind of safety arrestment protection is controlled, to meet the work requirements of jack-up unit.
Technical solution of the present invention is, adopt fuel tank, main control valve group, motor sub-assembly, main control valve group is communicated with fuel tank and motor sub-assembly by hydraulic fluid port respectively, it is characterized in that, main control valve group comprises cartridge valve, left electromagnetic switch valve, left sequence valve, three position four-way electromagnetic valve, left proportional velocity regulating valve, right electromagnetic switch valve, right sequence valve, lower cartridge valve, overflow valve, right proportional velocity regulating valve; One end of upper cartridge valve is communicated with fuel tank and overflow valve, the upper cartridge valve other end is communicated with left electromagnetic switch valve and right electromagnetic switch valve, left electromagnetic switch valve is communicated with left sequence valve, left proportional velocity regulating valve, right electromagnetic switch valve is communicated with right sequence valve, right proportional velocity regulating valve, left sequence valve and right sequence valve are communicated with three position four-way electromagnetic valve respectively, three position four-way electromagnetic valve is communicated with respectively lower cartridge valve and overflow valve, and lower cartridge valve, left proportional velocity regulating valve, right proportional velocity regulating valve are communicated with hydraulic fluid port.
It is characterized in that, motor sub-assembly is made up of motor, brake, right equalizing valve, left pressure switch, left equalizing valve, shuttle valve, two-position three way magnetic valve, right pressure switch, downforce switch; Brake is communicated with motor, motor is communicated with left pressure switch, left equalizing valve, right pressure switch, right equalizing valve, right equalizing valve is connected with left equalizing valve, shuttle valve connects respectively left equalizing valve, right equalizing valve, shuttle valve is communicated with downforce switch, and right equalizing valve, left equalizing valve, shuttle valve are connected with hydraulic fluid port.
It is characterized in that, hydraulic fluid port comprises main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
It is characterized in that, main control valve group is communicated with motor sub-assembly by main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
It is characterized in that, main control valve group is communicated with fuel tank by main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B.
It is characterized in that, motor sub-assembly adopts 6 covers, or overlaps more.
Innovative point of the present invention is: 1, have function of stepless speed regulation; 2, meet large flow rate working conditions, system resistance tocrocking is strong; 3, make to brake utensil control function, avoided lifting gear to move and brake is not opened the situation that causes driving, system security reliability is high.
Advantage of the present invention is, novel, reasonable in design, has function of stepless speed regulation; Can meet large flow rate working conditions, resistance tocrocking is strong, uses safety.
Brief description of the drawings
Fig. 1, structural representation of the present invention.
The structural representation of the motor sub-assembly that Fig. 2, the present invention adopt.
In figure, motor 1, motor sub-assembly 2, upper cartridge valve 3, left electromagnetic switch valve 4, left sequence valve 5, three position four-way electromagnetic valve 6, left proportional velocity regulating valve 7, fuel tank 8, main control valve group 9, right electromagnetic switch valve 10, right sequence valve 11, lower cartridge valve 12, overflow valve 13, right proportional velocity regulating valve 14, brake 15, right equalizing valve 16, left pressure switch 17, left equalizing valve 18, shuttle valve 19, two-position three way magnetic valve 20, right pressure switch 21, downforce switch 22, main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
Detailed description of the invention
Below, by reference to the accompanying drawings, embodiments of the invention are described in further detail.
As Fig. 1, shown in Fig. 2, the present invention adopts main parts size to comprise motor 1, motor sub-assembly 2, upper cartridge valve 3, left electromagnetic switch valve 4, left sequence valve 5, three position four-way electromagnetic valve 6, left proportional velocity regulating valve 7, fuel tank 8, main control valve group 9, right electromagnetic switch valve 10, right sequence valve 11, lower cartridge valve 12, overflow valve 13, right proportional velocity regulating valve 14, brake 15, right equalizing valve 16, left pressure switch 17, left equalizing valve 18, shuttle valve 19, two-position three way magnetic valve 20, right pressure switch 21, downforce switch 22, main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
Main control valve group 9 is communicated with fuel tank 8 and motor sub-assembly 2 by hydraulic fluid port respectively.Hydraulic fluid port comprises main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.Wherein, main control valve group 9 is furnished with main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A and main control valve group hydraulic fluid port B.Motor sub-assembly 2 is furnished with motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
Main control valve group 9 is communicated with motor sub-assembly by hydraulic fluid port A, hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
Main control valve group 9 is communicated with fuel tank 8 by main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B.
Control valve group 9 comprises cartridge valve 3, left electromagnetic switch valve 4, left sequence valve 5, three position four-way electromagnetic valve 6, left proportional velocity regulating valve 7, right electromagnetic switch valve 10, right sequence valve 11, lower cartridge valve 12, overflow valve 13, right proportional velocity regulating valve 14; One end of upper cartridge valve 3 is communicated with fuel tank 8 and overflow valve 13, upper cartridge valve 3 other ends are communicated with left electromagnetic switch valve 4 and right electromagnetic switch valve 10, left electromagnetic switch valve 4 is communicated with left sequence valve 5, left proportional velocity regulating valve 7, right electromagnetic switch valve 10 is communicated with right sequence valve 11, right proportional velocity regulating valve 14, left sequence valve 5 and right sequence valve 11 are communicated with three position four-way electromagnetic valve 6 respectively, three position four-way electromagnetic valve 6 is communicated with respectively lower cartridge valve 12 and overflow valve 13, and lower cartridge valve 12, left proportional velocity regulating valve 7, right proportional velocity regulating valve 14 are communicated with main control valve group hydraulic fluid port P.
Motor sub-assembly 2 is made up of motor 1, brake 15, right equalizing valve 16, left pressure switch 17, left equalizing valve 18, shuttle valve 19, two-position three way magnetic valve 20, right pressure switch 21, downforce switch 22; Brake 15 is communicated with motor 1, motor 1 is communicated with left pressure switch 17, left equalizing valve 18, right pressure switch 21, right equalizing valve 16, the left equalizing valve 18 of right equalizing valve 16 is communicated with, shuttle valve 19 is communicated with respectively left equalizing valve 18, right equalizing valve 16, shuttle valve 19 is communicated with downforce switch 22, and right equalizing valve 16, left equalizing valve 18, shuttle valve 19 are connected with motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
Motor sub-assembly 2 adopts 6 covers.Also can as required, select more covers.
The course of work of the present invention is, in the time of system vertical motion, the right position electromagnet of three position four-way electromagnetic valve 6 obtains electric, the electromagnet of left electromagnetic valve 4 obtains electric its valve port that makes and closes, the proportion electro-magnet of left proportional velocity regulating valve 7 obtains electric, its valve port two ends are connected, hydraulic oil enters main control valve group hydraulic fluid port A from main control valve group hydraulic fluid port P through left proportional velocity regulating valve 7, thereby enter the entrance of motor sub-assembly 2---motor sub-assembly hydraulic fluid port A1, CD-ROM drive motor 1 spinning movement, drive loaded work piece, hydraulic oil is from the motor sub-assembly hydraulic fluid port B1 oil return of each motor sub-assembly 2 to main control valve group hydraulic fluid port B, through right electromagnetic valve 10, upper cartridge valve 3 flows back to fuel tank 8.
In main control valve group 9, the entrance of cartridge valve 12 communicates with the entrance of proportional velocity regulating valve 7, the outlet of left sequence valve 5 communicates with main control valve hydraulic fluid port A, regulate the setting pressure of left sequence valve 5, make the pressure reduction at left proportional velocity regulating valve 7 two ends keep definite value, be that main control valve hydraulic fluid port P pressure and main control valve hydraulic fluid port A pressure reduction are definite value, supply with left proportional velocity regulating valve 7 electric currents, make its value from small to large, thereby it is large from little change to control valve port opening, flow and the input current value of passing through left proportional velocity regulating valve 7 are linearly proportional, thereby realize the function of stepless speed regulation of hydraulic system.
In motor sub-assembly 2, the electromagnet of two-position three way magnetic valve 20 obtains electric its valve port and opens, hydraulic oil enters motor sub-assembly hydraulic fluid port A1, part hydraulic oil is through shuttle valve 19, two-position three way magnetic valve 20 enters the entrance of the brake 15 of motor sub-assembly 2, open brake 15, another part hydraulic oil enters motor 1 through the one way valve of equalizing valve 18, drive motor 1 to rotate, drive loaded work piece, fuel-displaced through motor 1, open right pressure switch 21, hydraulic oil is got back to motor sub-assembly hydraulic fluid port B1 through right equalizing valve 16, through main control valve group hydraulic fluid port B, pass through again electromagnetic valve 11, upper cartridge valve 3 flows back to fuel tank 8.
In motor sub-assembly 2, the unlatching design pressure value of left equalizing valve 18, right equalizing valve 16 should meet setup pressure value and the system back pressure value sum that brake 15 is opened.Ensured no matter be from hydraulic fluid port A1 oil-feed or from hydraulic fluid port B1 oil-feed, i.e. no matter the present invention carries out peaceful is moved or falls platform action, before left equalizing valve 18 or right equalizing valve 16 are opened, opens brake 15 completely.Avoided lifting gear to move and brake 15 is not opened the situation that causes driving, security reliability of the present invention is high.Downforce switch 22 is set brake 15 and is not opened alarm, and left pressure switch 17, right pressure switch 21 are set the too high alarm of pressure at two ends of left equalizing valve 18 and right equalizing valve 16.
Main control valve group 9 of the present invention adopts plug-in mounting structure, can meet the operating mode of large flow, and resistance tocrocking of the present invention is strong.
Claims (7)
1. the hydraulic lifting system that safety arrestment protection is controlled, adopt fuel tank, main control valve group, motor sub-assembly, main control valve group is communicated with fuel tank and motor sub-assembly by hydraulic fluid port respectively, it is characterized in that, main control valve group (9) comprises cartridge valve (3), left electromagnetic switch valve (4), left sequence valve (5), three position four-way electromagnetic valve (6), left proportional velocity regulating valve (7), right electromagnetic switch valve (10), right sequence valve (11), lower cartridge valve (12), overflow valve (13), right proportional velocity regulating valve (14), one end of upper cartridge valve (3) and fuel tank (8) and overflow valve (13) connect, upper cartridge valve (3) other end is communicated with left electromagnetic switch valve (4) and right electromagnetic switch valve (10), left electromagnetic switch valve (4) and left sequence valve (5), left proportional velocity regulating valve (7) is communicated with, right electromagnetic switch valve (10) and right sequence valve (11), right proportional velocity regulating valve (14) is communicated with, left sequence valve (5) and right sequence valve (11) are communicated with three position four-way electromagnetic valve (6) respectively, three position four-way electromagnetic valve (6) is communicated with respectively lower cartridge valve (12) and overflow valve (13), lower cartridge valve (12), left proportional velocity regulating valve (7), right proportional velocity regulating valve (14) is communicated with hydraulic fluid port.
2. the hydraulic lifting system that a kind of safety arrestment protection according to claim 1 is controlled, it is characterized in that, motor sub-assembly (2) comprises motor (1), brake (15), right equalizing valve (16), left pressure switch (17), left equalizing valve (18), shuttle valve (19), two-position three way magnetic valve (20), right pressure switch (21), downforce switch (22); Brake (15) is communicated with motor (1), motor (1) is communicated with left pressure switch (17), left equalizing valve (18), right pressure switch (21), right equalizing valve (16), right equalizing valve (16) is connected with left equalizing valve (18), shuttle valve (19) is communicated with respectively left equalizing valve (18), right equalizing valve (16), shuttle valve (19) is communicated with downforce switch (22), right equalizing valve (16), left equalizing valve (18), shuttle valve (19) are connected with hydraulic fluid port.
3. the hydraulic lifting system that a kind of safety arrestment protection according to claim 1 is controlled, is characterized in that, hydraulic fluid port comprises main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
4. the hydraulic lifting system that a kind of safety arrestment protection according to claim 1 is controlled; it is characterized in that, main control valve group (9) is communicated with motor sub-assembly (2) by main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B, motor sub-assembly hydraulic fluid port A1, motor sub-assembly hydraulic fluid port B1.
5. the hydraulic lifting system that a kind of safety arrestment protection according to claim 1 is controlled, is characterized in that, main control valve group (9) is communicated with fuel tank (8) by main control valve group hydraulic fluid port P, main control valve group hydraulic fluid port A, main control valve group hydraulic fluid port B.
6. the hydraulic lifting system that a kind of safety arrestment protection according to claim 1 is controlled, is characterized in that, motor sub-assembly (2) adopts 6 covers.
7. the hydraulic lifting system that a kind of safety arrestment protection according to claim 1 is controlled, is characterized in that, motor sub-assembly (2) adopts many covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465793.5A CN102936889B (en) | 2012-11-19 | 2012-11-19 | Hydraulic lifting system for safety brake protection control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210465793.5A CN102936889B (en) | 2012-11-19 | 2012-11-19 | Hydraulic lifting system for safety brake protection control |
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| CN102936889A CN102936889A (en) | 2013-02-20 |
| CN102936889B true CN102936889B (en) | 2014-08-13 |
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| CN201210465793.5A Active CN102936889B (en) | 2012-11-19 | 2012-11-19 | Hydraulic lifting system for safety brake protection control |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122879B (en) * | 2013-02-21 | 2015-07-29 | 武汉船用机械有限责任公司 | A kind of hydraulic bolt formula oil cylinder elevating system |
| CN103423488B (en) * | 2013-07-23 | 2016-02-17 | 武汉船用机械有限责任公司 | A kind of auto-tensioning valve group |
| CN105465077B (en) * | 2015-12-23 | 2017-09-01 | 武汉船用机械有限责任公司 | A kind of hydraulic system of rack-and-pinion lifting device |
| CN106194866B (en) * | 2016-08-25 | 2018-06-05 | 武汉船用机械有限责任公司 | The continuous lifting hydraulic control system of ocean platform |
| CN106638533B (en) * | 2016-09-30 | 2019-03-05 | 江苏恒立液压科技有限公司 | Ocean platform seawater column jacking system |
| CN111608982B (en) * | 2020-04-07 | 2023-01-17 | 武汉船用机械有限责任公司 | Hydraulic system of lifting platform |
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| NO327011B1 (en) * | 2007-07-18 | 2009-04-06 | Eab Engineering As | Shock |
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