CN105951703B - A kind of hydraulic system of gear-rack type lifter structure - Google Patents
A kind of hydraulic system of gear-rack type lifter structure Download PDFInfo
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- CN105951703B CN105951703B CN201610286948.7A CN201610286948A CN105951703B CN 105951703 B CN105951703 B CN 105951703B CN 201610286948 A CN201610286948 A CN 201610286948A CN 105951703 B CN105951703 B CN 105951703B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0809—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering the equipment being hydraulically actuated
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
Abstract
The invention discloses a kind of hydraulic system of gear-rack type lifter structure, belong to hydraulic system field.The hydraulic system includes：First auxiliary pump, the second auxiliary pump, the first main pump, the second main pump, solenoid directional control valve, pressure switch and multiple load equalization hydraulic pressure units, each load equalization hydraulic pressure unit include：Three position four-way directional control valve, hydraulic lock, the first inserted valve, the second inserted valve, pilot valve and first pressure sensor, the oil-out of the first auxiliary pump connects with after the oil-out of the described second auxiliary pump with the P mouths of the three position four-way directional control valve, the T mouths of the three position four-way directional control valve connect with fuel tank, the A mouths of the three position four-way directional control valve connect with the first oil inlet of the hydraulic lock, and the B mouths of the three position four-way directional control valve connect with the second oil inlet of the hydraulic lock.The hydraulic system realizes the load equalization between multiple gear-boxes of jacking condition and locking state.
Description
Technical field
The present invention relates to hydraulic system field, more particularly to a kind of hydraulic system of rack-and-pinion elevating mechanism.
Background technology
The exploration and development of marine oil and gas is substantially using ocean platform as carrier, and wherein self-elevating ocean platform is conventional one
Individual species, very important effect is played in the fields such as oil and gas development, offshore construction, wind-powered electricity generation installation.Put down the jack up ocean
The lifting structure of platform includes gear-rack type lifter structure.
Gear-rack type lifter structure is exactly to set several racks, rack and pinion phase on every pile leg of ocean platform
Engagement, and gear is driven by power set, power set impart power to gear, so that gear can be along rack liter
Drop, gear are fixed by the structures such as framework and ocean platform main body, and then drive ocean platform main body to realize lifting.
During the present invention is realized, inventor has found that prior art at least has problems with：
Load equalization function of traditional gear-rack type lifter structure either in lifting process or in locking
Relatively it is difficult to, is made troubles for the load equalization of gear-rack type lifter structure.
The content of the invention
In order to solve the problems, such as that load equalization is difficult in the prior art, the embodiments of the invention provide a kind of gear teeth
The hydraulic system of bar formula elevating mechanism.The technical scheme is as follows：
The embodiments of the invention provide a kind of hydraulic system of gear-rack type lifter structure, the hydraulic system includes：
First auxiliary pump, the second auxiliary pump, the first main pump, the second main pump, solenoid directional control valve, pressure switch and multiple load equalization hydraulic pressure lists
Member, each load equalization hydraulic pressure unit include：Three position four-way directional control valve, hydraulic lock, the first inserted valve, the second inserting
Valve, pilot valve and first pressure sensor, the oil-out of the first auxiliary pump with after the oil-out of the described second auxiliary pump with it is described
The P mouths connection of three position four-way directional control valve, the T mouths of the three position four-way directional control valve connect with fuel tank, the three position four-way directional control valve
A mouths connected with the first oil inlet of the hydraulic lock, the B mouths of the three position four-way directional control valve enter with the second of the hydraulic lock
Hydraulic fluid port connects, the first oil-out of hydraulic lock load equalization oil cylinder corresponding with each load equalization hydraulic pressure unit
Rod chamber connection, the rodless cavity connection of the second oil-out of the hydraulic lock and the corresponding load equalization oil cylinder is described
First pressure sensor is connected between the rod chamber and rodless cavity of the corresponding load equalization oil cylinder；
The oil-out of second main pump connects with the A mouths of the pilot valve, and the B mouths of the pilot valve connect with fuel tank,
The C mouths of the pilot valve connect with the X mouths of first inserted valve and the X mouths of second inserted valve respectively, and described first inserts
The B mouths of dress valve connect with the second oil-out of the hydraulic lock, and the B mouths of second inserted valve go out with the first of the hydraulic lock
Hydraulic fluid port connects, and the A mouths of the first inserted valve of each load equalization hydraulic pressure unit are interconnected, each load equalization liquid
The A mouths of the second inserted valve of unit are pressed to be interconnected；
The oil-out of second main pump also connects with the P mouths of the solenoid directional control valve, the T mouths of the solenoid directional control valve with
The fuel tank connection, the A mouths of solenoid directional control valve brake corresponding with each load equalization hydraulic pressure unit connect, institute
State on the oil circuit that pressure switch is connected between the A mouths of the solenoid directional control valve and the corresponding brake；
First main pump is bidirectional hydraulic pump, the first oil-out of first main pump and each load equalization liquid
The A mouths connection of hydraulic motor corresponding to unit is pressed, the second oil-out of first main pump connects with the B mouths of the hydraulic motor
It is logical.
Specifically, each load equalization hydraulic pressure unit also includes：First one-way throttle valve and the second one-way throttle valve,
The oil inlet of first one-way throttle valve connects with the second oil-out of the hydraulic lock, and first one-way throttle valve goes out
Hydraulic fluid port connects with the rodless cavity of the corresponding load equalization oil cylinder, oil inlet and the hydraulic pressure of second one-way throttle valve
The first oil-out connection of lock, the rod chamber of the oil-out of second one-way throttle valve and the corresponding load equalization oil cylinder
Connection.
Specifically, each load equalization hydraulic pressure unit also includes：First shuttle valve, the first oil-feed of first shuttle valve
Mouth connects with the rodless cavity of the corresponding load equalization oil cylinder, the second oil inlet of first shuttle valve and the corresponding load
The rod chamber connection of lotus equilibrium oil cylinder, the oil-out of first shuttle valve connect with the first pressure sensor.
Specifically, the hydraulic system also includes：First safety valve and the second safety valve, the oil-feed of first safety valve
Mouth connects with the oil-out of the described first auxiliary pump and the second auxiliary pump, and oil-out and the fuel tank of first safety valve connect
Logical, the oil inlet of second safety valve connects with the oil-out of the described first auxiliary pump, the oil-out of second safety valve and
The oil-out connection of first safety valve.
Specifically, the hydraulic system also includes：Cooler and filter, the oil inlet of the cooler and described three
The T mouths connection of position and four-way reversing valve, the oil-out of the cooler connect with the oil inlet of the filter, the filter
Oil-out connects with the fuel tank.
Further, the hydraulic system also includes：4th check valve, oil inlet and the mistake of the 4th check valve
The oil inlet connection of filter, the oil-out of the 4th check valve connect with the oil-out of the filter.
Specifically, the hydraulic system also includes：Second shuttle valve and second pressure sensor, the first of second shuttle valve
Oil inlet connects with the A mouths of the hydraulic motor, and the second oil inlet of second shuttle valve connects with the B mouths of the hydraulic motor
Logical, the oil-out of second shuttle valve connects with the second pressure sensor.
Specifically, the hydraulic system also includes：Working connection valve group, the working connection valve group include：First overflow valve and
Second overflow valve, the oil inlet of first overflow valve connect with the oil-out of second main pump, first overflow valve
Oil-out connects with the fuel tank, and the oil inlet of second overflow valve connects with the first oil-out of first main pump, institute
The oil inlet for stating the second overflow valve connects with the fuel tank.
Specifically, the hydraulic system also includes：5th check valve, the oil inlet and described second of the 5th check valve
The oil-out connection of main pump, the oil-out of the 5th check valve connect with the A mouths of the pilot valve.
Specifically, the hydraulic system also includes：4th main pump and the 5th main pump, the 4th main pump are bidirectional hydraulic
Pump, the first oil-out of the 4th main pump connect with the first oil-out of first main pump, and the second of the 4th main pump
Oil-out connects with the second oil-out of first main pump, the oil inlet of the 5th main pump and the oil-feed of second main pump
Mouth connection, the oil-out of the 5th main pump connect with the oil-out of second main pump.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：Rack-and-pinion provided in an embodiment of the present invention
The hydraulic system of formula elevating mechanism, when platform structure or spud leg need to carry out lifting action, due to the liquid of each lifting unit
The A mouths of pressure motor are homogeneously intercommunicated, and the B mouths of the hydraulic motor of each lifting unit are homogeneously intercommunicated so that each hydraulic motor
Suffered load is balanced, so that the load that hydraulic motor passes to corresponding gear-box is balanced, works as platform structure
Or after spud leg rises locking, the first auxiliary pump and the second auxiliary pump are in stress state, the electromagnetism of three position four-way directional control valve obtain it is electric after,
Hydraulic lock can be opened, the DT3 of pilot valve obtains electric, and the first inserted valve and the second inserted valve are opened, and make the work of load equalization oil cylinder
Stopper rod stretches out or retracted, and the rod chamber of multiple load equalization oil cylinders is interconnected, the rodless cavity phase of multiple load equalization oil cylinders
It is intercommunicated, it is achieved thereby that the load equalization between multiple gear-boxes of jacking condition and locking state, in addition, the hydraulic system
Logic is simple, and the process of balanced gear-box load is simple, after the load equalization of each gear-box, it is ensured that the peace of gear-box
Entirely, the safety of rack while is also protected, optimizes the stress of gear-rack type lifter structure, extends pinion and-rack lifting
The service life of mechanism.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the main structure diagram of gear-rack type lifter structure provided in an embodiment of the present invention；
Fig. 2 is the overlooking the structure diagram of gear-rack type lifter structure provided in an embodiment of the present invention；
Fig. 3 is the principle of the hydraulic system of gear-rack type lifter structure provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the local hydraulic system of gear-rack type lifter structure provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of another local hydraulic system of gear-rack type lifter structure provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
The embodiments of the invention provide a kind of hydraulic system of gear-rack type lifter structure, the hydraulic system is applied to one
Kind gear-rack type lifter structure, as depicted in figs. 1 and 2, the gear-rack type lifter structure includes the stake through platform structure e
Leg 101, be separately installed with a toothed rack 101a on the both sides of spud leg 101, per toothed rack 101a on the outside of be respectively disposed with one
Framework 105, be flexibly connected by frame link 106 between two frameworks 105, the lower end of each framework 105 be equipped with can with it is flat
Link assembly 109 connected platform structure e, along rack 101a longitudinal directions at least provided with a lifting unit on each framework 105, often
Individual lifting unit includes hydraulic motor d, gear-box 103, gear 104, cantilever lever 107, load equalization oil cylinder a and brake c,
Gear-box 103 is arranged on framework 105, hydraulic motor d output end and brake c output end respectively with gear-box 103
Two input drive connections, gear 104 is arranged in the output end of gear-box 103, and gear 104 and corresponding rack 101a
Engagement, one end of cantilever lever 107 are fixed on gear-box 103, the other end of cantilever lever 107 and load equalization oil cylinder a piston
Bar is hinged, and load equalization oil cylinder a cylinder body is fixed on framework 105, and load equalization oil cylinder a is arranged in parallel with spud leg 101.
As shown in Fig. 3, Fig. 4 and Fig. 5, the hydraulic system includes：First auxiliary pump 1, the second auxiliary pump 1a, the first main pump 2, second
Main pump 2a, solenoid directional control valve 3, pressure switch 4 and multiple load equalization hydraulic pressure units, each load equalization hydraulic pressure unit include：
Three position four-way directional control valve 5, hydraulic lock 6, the first inserted valve 7, the second inserted valve 8, pilot valve 9 and first pressure sensor 10, the
The oil-out of one auxiliary pump 1 connects after being connected with the second auxiliary pump 1a oil-out with the P mouths of three position four-way directional control valve 5,3-position 4-way
The T mouths of reversal valve 5 connect with fuel tank b, and the A mouths of three position four-way directional control valve 5 connect with the first oil inlet of hydraulic lock 6, three four
The B mouths of logical reversal valve 5 connect with the second oil inlet of hydraulic lock 6, the first oil-out of hydraulic lock 6 and each load equalization hydraulic pressure
The rod chamber connection of load equalization oil cylinder a corresponding to unit, the second oil-out of hydraulic lock 6 and corresponding load equalization oil cylinder a
Rodless cavity connection, first pressure sensor 10 connected between corresponding load equalization oil cylinder a rod chamber and rodless cavity.
Second main pump 2a oil-out connects with the A mouths of pilot valve 9, and the B mouths of pilot valve 9 connect with fuel tank b, pilot valve 9
C mouths connected respectively with the X mouths of the first inserted valve 7 and the X mouths of the second inserted valve 8, the B mouths of the first inserted valve 7 and hydraulic lock 6
Second oil-out connects, and the B mouths of the second inserted valve 8 connect with the first oil-out of hydraulic lock 6, each load equalization hydraulic pressure unit
The A mouths of the first inserted valve 7 be interconnected, the A mouths of the second inserted valve 8 of each load equalization hydraulic pressure unit are interconnected.
Second main pump 2a oil-out also connects with the P mouths of solenoid directional control valve 3, and T mouths and the fuel tank b of solenoid directional control valve 3 connect
Logical, the A mouths of solenoid directional control valve 3 brake c connections corresponding with each load equalization hydraulic pressure unit, pressure switch 4 is connected to electricity
On oil circuit between the A mouths of magnetic reversal valve 3 and corresponding brake c.
First main pump 2 is bidirectional hydraulic pump, and the first oil-out of the first main pump 2 is corresponding with each load equalization hydraulic pressure unit
Hydraulic motor d the connection of A mouths, the second hydraulic fluid port of the first main pump 2 connects with hydraulic motor d B mouths.Multiple load equalization hydraulic pressure
The quantity of unit is identical with the quantity of the load equalization oil cylinder a in gear-rack type lifter structure.In the present embodiment, load is equal
The oil cylinder a that weighs is 4, then load equalization hydraulic pressure unit is also 4.
Specifically, each load equalization hydraulic pressure unit also includes：First one-way throttle valve 11 and the second one-way throttle valve 12,
The oil inlet of first one-way throttle valve 11 connects with the second oil-out of hydraulic lock 6, the oil-out of the first one-way throttle valve 11 with
Corresponding load equalization oil cylinder a rodless cavity connection, the oil inlet of the second one-way throttle valve 12 and the first oil-out of hydraulic lock 6
Connection, the oil-out of the second one-way throttle valve 12 connect with corresponding load equalization oil cylinder a rod chamber.First one-way throttle valve
11 and second one-way throttle valve 12 be respectively used to control it where oil circuit fluid flow.
Specifically, each load equalization hydraulic pressure unit also includes：First shuttle valve 13, the first oil inlet of the first shuttle valve 13 with
Corresponding load equalization oil cylinder a rodless cavity connection, the second oil inlet of the first shuttle valve 13 is with corresponding load equalization oil cylinder a's
Rod chamber connects, and the oil-out of the first shuttle valve 13 connects with first pressure sensor 10.Can be by load by the first shuttle valve 13
Fluid in balanced oil cylinder a rod chamber and rodless cavity guides to first pressure sensor 10, and first pressure sensor 10 is used for real
When load suffered by load equalization oil cylinder a reality corresponding to detection.
Specifically, the hydraulic system can also include：First safety valve 15 and the second safety valve 16, the first safety valve 15
Oil inlet connects with the second auxiliary pump 1a oil-out, and the oil-out of the first safety valve 15 connects with fuel tank b, the second safety valve 16
Oil inlet connects with the oil-out of the first auxiliary pump 1, and the oil-out of the second safety valve 16 connects with the oil-out of the first safety valve 15.
Wherein, when pressure value of the fluid that the first auxiliary pump 1 flows out higher than the setting of the second safety valve 16, fluid passes through the second safety valve 16
Fuel tank b is flowed back to, realizes releasing pressure automatically, when the fluid of the second auxiliary pump 1a outflows is higher than the pressure value that the first safety valve 15 is set,
Fluid flows back to fuel tank b by the first safety valve 15, realizes releasing pressure automatically.
The hydraulic system can also include：3rd check valve 17, the oil inlet of the 3rd check valve 17 go out with the first auxiliary pump 1
Hydraulic fluid port, the oil-out of the 3rd check valve 17 connect with the P mouths of three position four-way directional control valve 5.3rd check valve 17 is used to prevent the
The fluid backflow that one auxiliary pump 1 flows out.Specifically, the oil inlet that the oil-out of the first auxiliary pump 1 can be first with the second safety valve 16 connects
After logical, then connect with the oil inlet of the 3rd check valve 17.
Further, the hydraulic system can also include：Cooler 18 and filter 19, the oil inlet of cooler 18 and three
The T mouths connection of position and four-way reversing valve 5, the oil-out of cooler 18 connects with the oil inlet of filter 19, filter 19 it is fuel-displaced
Mouth connects with fuel tank b.The cooler 18 is used to cool down the fluid for flowing into fuel tank b, and filter 19 is used to filter the oil for flowing into fuel tank b
Liquid.In addition, the oil-out of the first safety valve 15 can also connect with the oil inlet of cooler 18, the cooler 18 can also be used for
The fluid that filter is flowed out by the oil-out of the first safety valve 15 and the second safety valve 16.
Further, the hydraulic system can also include：4th check valve 20, the oil inlet of the 4th check valve 20 and filtering
The oil inlet connection of device 19, the oil-out of the 4th check valve 20 connect with the oil-out of filter 19.4th check valve 20 is used
Pass through the oil pressure pressure of filter 19 in controlling stream, prevent filter 19 from being damaged because of too high oil pressure.
Specifically, the hydraulic system can also include：Second shuttle valve 21 and second pressure sensor 22, the second shuttle valve 21
First oil inlet connects with hydraulic motor d A mouths, and the second oil inlet of the second shuttle valve 21 connects with hydraulic motor d B mouths, the
The oil-out of two shuttle valves 21 connects with second pressure sensor 22.The second pressure sensor 22 is used to detect hydraulic motor d's
Oil pressure.
Specifically, the hydraulic system can also include working connection valve group, and working connection valve group includes：First overflow valve 14a and
Second overflow valve 14b, the first overflow valve 14a oil inlet connect with the second main pump 2a oil-out, and the first overflow valve 14a's goes out
Hydraulic fluid port connects with fuel tank b, and the second overflow valve 14b oil inlet connects with the first oil-out of the first main pump 2, the second overflow valve
14b oil inlet connects with fuel tank b.Working connection valve group is overflow valve group, for protecting the safety of pump group, wherein, the first overflow
Valve 14a provides safe pressure for the second main pump 2a, and the second overflow valve 14b is that the first main pump 2 provides safe pressure.
Specifically, the hydraulic system can also include：5th check valve 24, the oil inlet of the 5th check valve 24 and the second master
Pump 2a oil-out connection, the oil-out of the 5th check valve 24 connect with the A mouths of pilot valve 9.5th check valve 24 is used to prevent
Only the oil liquid pressure of the second main pump 2a outflows is too high.
Specifically, the hydraulic system can also include：4th main pump 2b and the 5th main pump 2c, the 4th main pump 2b are two-way liquid
Press pump, the 4th main pump 2b the first oil-out connect with the first oil-out of the first main pump 2, the 4th main pump 2b the second oil-out
Connected with the second oil-out of the first main pump 2, the 5th main pump 2c oil inlet connects with the second main pump 2a oil inlet, the 5th master
Pump 2c oil-out connects with the second main pump 2a oil-out.4th main pump 2b and the 5th main pump 2c is respectively used to the master of auxiliary first
The main pump 2a fuel feeding of pump 2 and second.Wherein, the 5th main pump 2c, the first auxiliary pump 1 and second auxiliary pump 1a and the second main pump 2a can be
One-way hydraulic pump.
Specifically, the hydraulic system can also include：6th check valve 25, the oil inlet of the 6th check valve 25 and three four
The T mouths connection of logical reversal valve 5, the oil-out of the 6th check valve 25 connect with the oil inlet of cooler 18.6th check valve 25
The pressure of the fluid flowed into cooler 18 can be controlled, prevents that oil liquid pressure is too high and damages cooler 18.
It following is a brief introduction of the operation principle of the hydraulic system：
When platform structure e or spud leg 101 need to carry out lifting action, the first main pump 2 provides hydraulic pressure for hydraulic motor d
Oil, now, the DT5 of solenoid directional control valve 3 obtains electric, and brake c is opened, and hydraulic motor d starts to rotate, so as to drive platform structure e
Or spud leg 101 carries out lifting action, three position four-way directional control valve 5 now is in middle position, and (load equalization oil cylinder a is now in self-locking
State), the first auxiliary pump 1 is in unloading condition, and the DT4 of pilot valve 9 obtains electric, and the first inserted valve 7 and the second inserted valve 8 are in closing
Closed state, multiple load equalization oil cylinder a are mutually isolated, and first pressure sensor 10 can detect the load of each gear 104 in real time, separately
Outside, because the hydraulic motor d of each lifting unit A mouths are homogeneously intercommunicated, the hydraulic motor d of each lifting unit B mouths are equal
It is interconnected so that the load suffered by each hydraulic motor d is balanced, so that hydraulic motor d passes to corresponding gear
The load of case 103 is balanced.
After platform structure e rises locking, it is necessary to when the load to each gear-box 103 is adjusted to equilibrium, the first auxiliary He of pump 1
Second auxiliary pump 1a is in stress state, and the DT2 of three position four-way directional control valve 5 obtains electric, and hydraulic lock 6 is opened, and the DT3 of pilot valve 9 is obtained
Electricity, open the first inserted valve 7 and the second inserted valve 8, load equalization oil cylinder a piston rod stretches out, and multiple load equalizations oil
Cylinder a rodless cavity is interconnected, and makes the power all same suffered by the cantilever lever 107 of each lifting unit, first pressure sensor 10
The pressure of each load equalization oil cylinder a rodless cavity can be detected in real time and is converted to the load of gear-box 103, realize each gear-box
Load equalization between 103.
, it is necessary to when the load to each gear-box 103 is adjusted to equilibrium after spud leg 101 rises locking, the first auxiliary pump 1 and the
Two auxiliary pump 1a are in stress state, and the DT1 of three position four-way directional control valve 5 obtains electric, and hydraulic lock 6 is opened, and the DT3 of pilot valve 9 obtains electric, makes
First inserted valve 7 and the second inserted valve 8 are opened, and load equalization oil cylinder a piston rod is withdrawn, and multiple load equalization oil cylinder a
Rod chamber is interconnected, and makes the power all same suffered by the cantilever lever 107 of each lifting unit, and first pressure sensor 10 can be real-time
Detect the pressure of each load equalization oil cylinder a rod chamber and be converted to the load of gear-box 103, realize between each gear-box 103
Load equalization.
The hydraulic system of gear-rack type lifter structure provided in an embodiment of the present invention, when platform structure or spud leg need into
During row lifting action, because the A mouths of the hydraulic motor of each lifting unit are homogeneously intercommunicated, the hydraulic motor of each lifting unit
B mouths it is homogeneously intercommunicated so that the load suffered by each hydraulic motor is balanced, so that corresponding to hydraulic motor passes to
The load of gear-box is balanced, and when platform structure or spud leg are risen after locking, the first auxiliary pump and the second auxiliary pump are in loading
State, the electromagnetism of three position four-way directional control valve obtain it is electric after, hydraulic lock can be opened, the DT3 of pilot valve obtains electric, the first inserted valve and
Two inserted valves are opened, and the piston rod of load equalization oil cylinder is stretched out or is retracted, and the rod chamber of multiple load equalization oil cylinders is mutual
Connection, the rodless cavity of multiple load equalization oil cylinders is interconnected, it is achieved thereby that multiple gears of jacking condition and locking state
Load equalization between case, in addition, the hydraulic system logic is simple, the process of balanced gear-box load is simple, each gear-box
After load equalization, it is ensured that the safety of gear-box, while the safety of rack is also protected, optimize gear-rack type lifter
The stress of structure, extend the service life of gear-rack type lifter structure.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of hydraulic system of gear-rack type lifter structure, it is characterised in that the hydraulic system includes：First auxiliary pump
(1), the second auxiliary pump (1a), the first main pump (2), the second main pump (2a), solenoid directional control valve (3), pressure switch (4) and multiple load
Balanced hydraulic pressure unit, each load equalization hydraulic pressure unit include：Three position four-way directional control valve (5), hydraulic lock (6), first
Inserted valve (7), the second inserted valve (8), pilot valve (9) and first pressure sensor (10), the oil-out of the first auxiliary pump (1)
Connected after being connected with the oil-out of the described second auxiliary pump (1a) with the P mouths of the three position four-way directional control valve (5), the 3-position 4-way
The T mouths of reversal valve (5) connect with fuel tank (b), and the A mouths of the three position four-way directional control valve (5) enter with the first of the hydraulic lock (6)
Hydraulic fluid port connects, and the B mouths of the three position four-way directional control valve (5) connect with the second oil inlet of the hydraulic lock (6), the hydraulic lock
(6) rod chamber of the first oil-out load equalization oil cylinder (a) corresponding with each load equalization hydraulic pressure unit connects, institute
State the second oil-out of hydraulic lock (6) to connect with the rodless cavity of the corresponding load equalization oil cylinder (a), the first pressure passes
Sensor (10) is connected between the rod chamber and rodless cavity of the corresponding load equalization oil cylinder (a)；
The oil-out of second main pump (2a) connects with the A mouths of the pilot valve (9), the B mouths and fuel tank of the pilot valve (9)
(b) connect, the C mouths of the pilot valve (9) respectively with the X mouths of first inserted valve (7) and the X of second inserted valve (8)
Mouth connection, the B mouths of first inserted valve (7) connect with the second oil-out of the hydraulic lock (6), second inserted valve
(8) B mouths connect with the first oil-out of the hydraulic lock (6), the first inserted valve of each load equalization hydraulic pressure unit
(7) A mouths are interconnected, and the A mouths of the second inserted valve (8) of each load equalization hydraulic pressure unit are interconnected；
P mouth of the oil-out of second main pump (2a) also with the solenoid directional control valve (3) connects, the solenoid directional control valve (3)
T mouths connected with the fuel tank (b), the A mouths of the solenoid directional control valve (3) are corresponding with each load equalization hydraulic pressure unit
Brake (c) connects, and the pressure switch (4) is connected to the A mouths of the solenoid directional control valve (3) and the corresponding brake
(c) on the oil circuit between；
First main pump (2) is bidirectional hydraulic pump, the first oil-out of first main pump (2) and each load equalization
The A mouths connection of hydraulic motor (d) corresponding to hydraulic pressure unit, the second oil-out and the hydraulic motor of first main pump (2)
(d) B mouths connection.
2. hydraulic system according to claim 1, it is characterised in that each load equalization hydraulic pressure unit also includes：
First one-way throttle valve (11) and the second one-way throttle valve (12), oil inlet and the liquid of first one-way throttle valve (11)
The second oil-out connection of pressure lock (6), the oil-out of first one-way throttle valve (11) and the corresponding load equalization oil
The rodless cavity connection of cylinder (a), the oil inlet of second one-way throttle valve (12) connect with the first oil-out of the hydraulic lock (6)
Logical, the oil-out of second one-way throttle valve (12) connects with the rod chamber of the corresponding load equalization oil cylinder (a).
3. hydraulic system according to claim 1, it is characterised in that each load equalization hydraulic pressure unit also includes：
First shuttle valve (13), the first oil inlet of first shuttle valve (13) and the rodless cavity of the corresponding load equalization oil cylinder (a)
Connection, the second oil inlet of first shuttle valve (13) connects with the rod chamber of the corresponding load equalization oil cylinder (a), described
The oil-out of first shuttle valve (13) connects with the first pressure sensor (10).
4. hydraulic system according to claim 1, it is characterised in that the hydraulic system also includes：First safety valve
(15) connect with the second safety valve (16), the oil inlet of first safety valve (15) and the oil-out of the described second auxiliary pump (1a)
Logical, the oil-out of first safety valve (15) connects with the fuel tank (b), the oil inlet of second safety valve (16) and institute
State the oil-out connection of the first auxiliary pump (1), the oil-out of second safety valve (16) and going out for the first safety valve (15)
Hydraulic fluid port connects.
5. hydraulic system according to claim 1, it is characterised in that the hydraulic system also includes：Cooler (18) and
Filter (19), the oil inlet of the cooler (18) connect with the T mouths of the three position four-way directional control valve (5), the cooler
(18) oil-out connects with the oil inlet of the filter (19), oil-out and the fuel tank (b) of the filter (19)
Connection.
6. hydraulic system according to claim 5, it is characterised in that the hydraulic system also includes：4th check valve
(20), the oil inlet of the 4th check valve (20) connects with the oil inlet of the filter (19), the 4th check valve
(20) oil-out connects with the oil-out of the filter (19).
7. hydraulic system according to claim 1, it is characterised in that the hydraulic system also includes：Second shuttle valve (21)
With second pressure sensor (22), the first oil inlet of second shuttle valve (21) connects with the A mouths of the hydraulic motor (d),
Second oil inlet of second shuttle valve (21) connects with the B mouths of the hydraulic motor (d), second shuttle valve (21) it is fuel-displaced
Mouth connects with the second pressure sensor (22).
8. hydraulic system according to claim 1, it is characterised in that the hydraulic system also includes：Working connection valve group, institute
Stating working connection valve group includes：First overflow valve (14a) and the second overflow valve (14b), the oil inlet of first overflow valve (14a)
Being connected with the oil-out of second main pump (2a), the oil-out of first overflow valve (14a) connects with the fuel tank (b),
The oil inlet of second overflow valve (14b) connects with the first oil-out of first main pump (2), second overflow valve
Oil inlet (14b) connects with the fuel tank (b).
9. hydraulic system according to claim 1, it is characterised in that the hydraulic system also includes：5th check valve
(24), the oil inlet of the 5th check valve (24) connects with the oil-out of second main pump (2a), the 5th check valve
(24) oil-out connects with the A mouths of the pilot valve (9).
10. hydraulic system according to claim 1, it is characterised in that the hydraulic system also includes：4th main pump (2b)
With the 5th main pump (2c), the 4th main pump (2b) is bidirectional hydraulic pump, the first oil-out of the 4th main pump (2b) and institute
State the first oil-out connection of the first main pump (2), the second oil-out of the 4th main pump (2b) and first main pump (2)
Second oil-out connects, and the oil inlet of the 5th main pump (2c) connects with the oil inlet of second main pump (2a), and described the
The oil-out of five main pumps (2c) connects with the oil-out of second main pump (2a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610286948.7A CN105951703B (en) | 2016-05-03 | 2016-05-03 | A kind of hydraulic system of gear-rack type lifter structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610286948.7A CN105951703B (en) | 2016-05-03 | 2016-05-03 | A kind of hydraulic system of gear-rack type lifter structure |
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| CN105951703A CN105951703A (en) | 2016-09-21 |
| CN105951703B true CN105951703B (en) | 2017-12-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678100B (en) * | 2017-02-15 | 2018-08-24 | 广东精铟海洋工程股份有限公司 | A kind of hydraulic control system for locking device |
| CN107524661B (en) * | 2017-08-25 | 2019-07-23 | 武汉船用机械有限责任公司 | A kind of hydraulic system of rack-and-pinion lifting device |
| CN109577895B (en) * | 2018-11-28 | 2021-03-02 | 中国石油集团渤海钻探工程有限公司 | Gear and rack transmission type rotary locking mechanism |
| CN111219285B (en) * | 2020-01-14 | 2020-10-30 | 自然资源部第一海洋研究所 | Wave energy power generation device |
| CN111664135A (en) * | 2020-04-23 | 2020-09-15 | 武汉船用机械有限责任公司 | Hydraulic system of gear rack lifting platform |
| CN116928162B (en) * | 2023-09-15 | 2023-12-19 | 启东中远海运海洋工程有限公司 | Hydraulic system with energy recovery function for ocean lifting platform |
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| CN105951703A (en) | 2016-09-21 |
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