CN103122879A - Hydraulic plug pin type oil cylinder jacking system - Google Patents
Hydraulic plug pin type oil cylinder jacking system Download PDFInfo
- Publication number
- CN103122879A CN103122879A CN2013100551423A CN201310055142A CN103122879A CN 103122879 A CN103122879 A CN 103122879A CN 2013100551423 A CN2013100551423 A CN 2013100551423A CN 201310055142 A CN201310055142 A CN 201310055142A CN 103122879 A CN103122879 A CN 103122879A
- Authority
- CN
- China
- Prior art keywords
- valve
- communicated
- fluid port
- hydraulic fluid
- way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a hydraulic plug pin type oil cylinder jacking system, and belongs to the field of self-elevating platform hydraulic jacking systems. The hydraulic plug pin type oil cylinder jacking system comprises a first jacking oil cylinder, a first upper plug pin oil cylinder, a first lower plug pin oil cylinder, a three-position four-way reversing valve, a two-position four-way reversing valve, a first cartridge valve, a first two-position three-way pilot valve and a three-position four-way electric hydraulic reversing valve. The first oil port of the two-position four-way reversing valve is communicated with the oil inlet of the jacking system, the second oil port of the two-position four-way reversing valve is closed, the third oil port of the two-position four-way reversing valve is communicated with the oil inlet of the first two-position three-way pilot valve, the first oil outlet of the first two-position three-way pilot valve is communicated with the control oil port of the first cartridge valve, and the second oil outlet of the first two-position three-way pilot valve is communicated with an oil tank. According to the hydraulic plug pin type oil cylinder jacking system, due to the fact that the number of valve banks adopted is small, the control oil pipeline of the hydraulic plug pin type oil cylinder jacking system is simplified, and production cost is reduced.
Description
Technical field
The present invention relates to the hydraulic lifting system field, particularly a kind of hydraulic bolt formula oil cylinder elevating system.
Background technique
Self-elevating drilling platform, be called again footing formula drill platform, it is present domestic and international application drill platform the most widely, jack-up unit comprises platform mechanism, spud leg, elevator mechanism and life building etc., during the jack-up unit operation, spud leg reaches the seabed, stand on sea bed, jack-up unit utilizes spud leg to hold up the platform shell, and makes the platform mechanism bottom leave the certain distance in sea; During the jack-up unit towage, spud leg is regained, and platform mechanism is in floating condition.
have a kind of from the installed production platform hydraulic lifting system in prior art, the hydraulic bolt formula elevating system that specifically uses in a kind of offshore oil production platform lifting process, it has 16 oil hydraulic cylinders, hydraulic control system and electric 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, electric control system has hydraulic cylinder travel detection device and programmable controller PLC, the oil pump motor group is adopted in this invention, electro-hydraulic proportion reversing valve, the import equilibrium valve, the synchronous synchronous close-loop control scheme that forms of the rigidity of outlet equilibrium valve and spud leg, it is little that the described hydraulic lifting system of this patent has a volume, inertia is good, the advantage that transmission efficiency is high.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
System of the prior art adopts a plurality of valve groups to control, and causes the oil circuit control of elevating system more complicated, has improved cost.
Summary of the invention
In order to solve the self-elevating platform up-down system complexity, the problem that cost is higher, the embodiment of the present invention provide a kind of hydraulic bolt formula oil cylinder elevating system.Described technological scheme is as follows:
The invention provides a kind of hydraulic bolt formula oil cylinder elevating system, comprising: plugging pin oil cylinder, first time plugging pin oil cylinder, three position four-way directional control valve, two-position four way change valve, the first cartridge valve, the first two-bit triplet pilot valve and 3-position 4-way electro-hydraulic reversing valve on the first hoist cylinder, first; The first hydraulic fluid port of described two-position four way change valve is communicated with the filler opening of elevating system, the second hydraulic fluid port of described two-position four way change valve is closed, the 3rd hydraulic fluid port of described two-position four way change valve is communicated with the filler opening of described the first two-bit triplet pilot valve, the first oil outlet of described the first two-bit triplet pilot valve is communicated with the control port of described the first cartridge valve, the second oil outlet of described the first two-bit triplet pilot valve is communicated with fuel tank, and the 4th hydraulic fluid port of described two-position four way change valve is communicated with described fuel tank;
The first pilot pressure control port of described 3-position 4-way electro-hydraulic reversing valve and the 4th pilot pressure control port that is positioned at described the first pilot pressure control port opposite side are communicated with the filler opening of described elevating system respectively, and the 3rd pilot pressure control port that described 3-position 4-way electro-hydraulic reversing valve is positioned at the second pilot pressure control port of described the first pilot pressure control port homonymy and is positioned at described the second pilot pressure control port opposite side is communicated with described fuel tank respectively;
The first hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with the filler opening of described elevating system, the second hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with the first hydraulic fluid port of described the first cartridge valve, the second hydraulic fluid port of described the first cartridge valve is communicated with the rodless cavity of described the first hoist cylinder, the 3rd hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with the rod chamber of described the first hoist cylinder, and the 4th hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with described fuel tank;
The first hydraulic fluid port of described three position four-way directional control valve is communicated with the filler opening of described elevating system, on the second hydraulic fluid port of described three position four-way directional control valve and described first, the rodless cavity of plugging pin oil cylinder is communicated with, the 3rd hydraulic fluid port of described three position four-way directional control valve is communicated with the rodless cavity of described first time plugging pin oil cylinder, and the 4th hydraulic fluid port of described three position four-way directional control valve is communicated with described fuel tank;
On described first, the rod chamber of the rod chamber of plugging pin oil cylinder and described first time plugging pin oil cylinder is communicated with the filler opening of described elevating system respectively.
Further, described elevating system also comprises hydraulic lock, the second hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve and the 3rd hydraulic fluid port are communicated with the first filler opening and second filler opening of described hydraulic lock respectively, the first oil outlet of described hydraulic lock is communicated with the first hydraulic fluid port of described the first cartridge valve, and the second oil outlet of described hydraulic lock is communicated with the rodless cavity of described the first hoist cylinder.
further, described elevating system also comprises: the second hoist cylinder, the 3rd hoist cylinder, the 4th hoist cylinder, the second cartridge valve, the 3rd cartridge valve, the 4th cartridge valve, the second two-bit triplet pilot valve, the 3rd two-bit triplet pilot valve and the 4th two-bit triplet pilot valve, described the second two-bit triplet pilot valve, the filler opening of described the 3rd two-bit triplet pilot valve and described the 4th two-bit triplet pilot valve is communicated with the 3rd hydraulic fluid port of described two-position four way change valve respectively, described the second two-bit triplet pilot valve, the first oil outlet of described the 3rd two-bit triplet pilot valve and described the 4th two-bit triplet pilot valve respectively with described the second cartridge valve, the control port of described the 3rd cartridge valve and described the 4th cartridge valve is communicated with, described the second two-bit triplet pilot valve, the second oil outlet of described the 3rd two-bit triplet pilot valve and described the 4th two-bit triplet pilot valve is communicated with described fuel tank respectively, the first oil outlet of described hydraulic lock is communicated with the first hydraulic fluid port of described the second cartridge valve, described the 3rd cartridge valve and described the 4th cartridge valve respectively, the second hydraulic fluid port of described the second cartridge valve, described the 3rd cartridge valve and described the 4th cartridge valve is communicated with the rodless cavity of described the second hoist cylinder, described the 3rd hoist cylinder and described the 4th hoist cylinder respectively, and the rod chamber of described the second hoist cylinder, described the 3rd hoist cylinder and described the 4th hoist cylinder is communicated with the second oil outlet of described hydraulic lock.
further, described the first hoist cylinder, described the second hoist cylinder, the rodless cavity of described the 3rd hoist cylinder and described the 4th hoist cylinder respectively with described the first cartridge valve, described the second cartridge valve, be disposed with described the first relief valve on oil circuit between the second hydraulic fluid port of described the 3rd cartridge valve and described the 4th cartridge valve, described the second relief valve, described the 3rd relief valve and described the 4th relief valve, described the first relief valve, described the second relief valve, the oil outlet of described the 3rd relief valve and described the 4th relief valve is communicated with filler opening and the described fuel tank of four the first one-way valves respectively, described the first relief valve, described the second relief valve, the oil outlet of described the 3rd relief valve and described the 4th relief valve also respectively with filler opening and described first hoist cylinder of four the second one-way valves, described the second hoist cylinder, the rod chamber of described the 3rd hoist cylinder and described the 4th hoist cylinder is communicated with.
further, described elevating system also comprises: the first pipeline explosion-proof valve, the second pipeline explosion-proof valve, the 3rd pipeline explosion-proof valve and the 4th pipeline explosion-proof valve, oil circuit between the rodless cavity of described the first hoist cylinder and described the first cartridge valve is communicated with the oil outlet of described the first pipeline explosion-proof valve, oil circuit between the rodless cavity of described the second hoist cylinder and described the second cartridge valve is communicated with the oil outlet of described the second pipeline explosion-proof valve, oil circuit between the rodless cavity of described the 3rd hoist cylinder and described the 3rd cartridge valve is communicated with the oil outlet of described the 3rd pipeline explosion-proof valve, oil circuit between the rodless cavity of described the 4th hoist cylinder and described the 4th cartridge valve is communicated with the oil outlet of described the 4th pipeline explosion-proof valve, described the first pipeline explosion-proof valve, described the second pipeline explosion-proof valve, the filler opening of described the 3rd pipeline explosion-proof valve and described the 4th pipeline explosion-proof valve is interconnected.
Further, described elevating system also comprises: plugging pin oil cylinder and second time plugging pin oil cylinder on second, on described second, the rodless cavity of plugging pin oil cylinder is communicated with the second hydraulic fluid port of described three position four-way directional control valve, and the rod chamber of plugging pin oil cylinder is communicated with the filler opening of described elevating system on described second; The rodless cavity of described second time plugging pin oil cylinder is communicated with the 3rd hydraulic fluid port of described three position four-way directional control valve, and the rod chamber of described second time plugging pin oil cylinder is communicated with the filler opening of described elevating system.
Further, described elevating system also comprises three position four-way electromagnetic valve, the first hydraulic fluid port of described three position four-way electromagnetic valve is communicated with the 4th hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve, the second hydraulic fluid port of described three position four-way electromagnetic valve is communicated with the 3rd hydraulic fluid port of described three position four-way electromagnetic valve, and the 4th hydraulic fluid port of described three position four-way electromagnetic valve is communicated with described fuel tank.
Further, described elevating system also comprises: the 5th relief valve and the 6th relief valve, the oil outlet of described the 5th relief valve is communicated with the second hydraulic fluid port of described three position four-way electromagnetic valve, the filler opening of described the 5th relief valve is communicated with the 3rd hydraulic fluid port of described three position four-way electromagnetic valve, the filler opening of described the 6th relief valve is communicated with the second hydraulic fluid port of described three position four-way electromagnetic valve, and the oil outlet of described the 6th relief valve is communicated with the 3rd hydraulic fluid port of described three position four-way electromagnetic valve.
Further, described elevating system also comprises the 7th relief valve, the filler opening of described the 7th relief valve and drain tap are communicated with the first hydraulic fluid port of described three position four-way electromagnetic valve respectively, and the oil outlet of described the 7th relief valve is communicated with the 4th hydraulic fluid port of described three position four-way electromagnetic valve.
Particularly, be provided with main control valve group pressure transducer on the oil circuit between the 4th hydraulic fluid port of the first hydraulic fluid port of described three position four-way electromagnetic valve and described 3-position 4-way electro-hydraulic reversing valve; Be provided with hoist cylinder rod chamber pressure transducer on oil circuit between the second oil outlet of described hydraulic lock and the rod chamber of described hoist cylinder; Be provided with hoist cylinder rodless cavity pressure transducer on oil circuit between the rodless cavity of described hydraulic lock the first oil outlet and described hoist cylinder; Be provided with pressure switch on described hydraulic lock the second oil outlet.
Particularly, be provided with plate-type non-return valve on the 4th hydraulic fluid port of described two-position four way change valve.
Particularly, be respectively arranged with four board-like ball valves on the oil circuit between the oil outlet of the rodless cavity of described the first hoist cylinder, described the second hoist cylinder, described the 3rd hoist cylinder and described the 4th hoist cylinder and described the first pipeline explosion-proof valve, described the second pipeline explosion-proof valve, described the 3rd pipeline explosion-proof valve and described the 4th pipeline explosion-proof valve.
Particularly, be respectively arranged with four pipeline ball valves on the oil circuit between the oil outlet of the rod chamber of described the first hoist cylinder, described the second hoist cylinder, described the 3rd hoist cylinder and described the 4th hoist cylinder and described four the second one-way valves.
Particularly, be provided with throttle valve on the oil circuit at the filler opening place of described the first two-bit triplet pilot valve, described the second two-bit triplet pilot valve, described the 3rd two-bit triplet pilot valve and described the 4th two-bit triplet pilot valve.
The beneficial effect that the technological scheme that the embodiment of the present invention provides is brought is: the invention provides a kind of hydraulic bolt formula oil cylinder elevating system, adopt a small amount of valve group to control, simplify the oil circuit control of elevating system of the present invention, reduced the cost of production of elevating system.
Description of drawings
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of hydraulic bolt formula oil cylinder elevating system of providing of the embodiment of the present invention;
Fig. 2 is the partial structurtes schematic diagram of a kind of hydraulic bolt formula oil cylinder elevating system of providing of the embodiment of the present invention.
in figure: the 1-fuel tank, the 2-three position four-way directional control valve, the 3-two-position four way change valve, the 4-plate-type non-return valve, the 5-hydraulic lock, 6-3-position 4-way electro-hydraulic reversing valve, the 7-three position four-way electromagnetic valve, the 8-pressure switch, 9-main control valve group pressure transducer, plugging pin oil cylinder on 101-first, first time plugging pin oil cylinder of 102-, plugging pin oil cylinder on 111-second, second time plugging pin oil cylinder of 112-, 12-hoist cylinder rod chamber pressure transducer, 13-hoist cylinder rodless cavity pressure transducer, 141-the first hoist cylinder, 142-the second hoist cylinder, 143-the 3rd hoist cylinder, 144-the 4th hoist cylinder, 151-the first relief valve, 152-the second relief valve, 153-the 3rd relief valve, 154-the 4th relief valve, 155-the 5th relief valve, 156-the 6th relief valve, 157-the 7th relief valve, 161-the first pipeline explosion-proof valve, 162-the second pipeline explosion-proof valve, 163-the 3rd pipeline explosion-proof valve, 164-the 4th pipeline explosion-proof valve, 171-the first cartridge valve, 172-the second cartridge valve, 173-the 3rd cartridge valve, 174-the 4th cartridge valve, 181-the first two-bit triplet pilot valve, 182-the second two-bit triplet pilot valve, 183-the 3rd two-bit triplet pilot valve, 184-the 4th two-bit triplet pilot valve, the board-like ball valve of 19-, 20-pipeline ball valve, 21-the first one-way valve, 22-the second one-way valve, the 23-throttle valve, the 24-filler opening.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment
The embodiment of the present invention provides a kind of hydraulic bolt formula oil cylinder elevating system, as depicted in figs. 1 and 2, this elevating system comprises: plugging pin oil cylinder 101, first time plugging pin oil cylinder 102, three position four-way directional control valve 2, two-position four way change valve 3, the first cartridge valve 171, the first two-bit triplet pilot valve 181 and 3-position 4-way electro-hydraulic reversing valve 6 on the first hoist cylinder 141, first; The first hydraulic fluid port of two-position four way change valve 3 is communicated with the filler opening 24 of this elevating system, the second hydraulic fluid port of two-position four way change valve 3 is closed, the 3rd hydraulic fluid port of two-position four way change valve 3 is communicated with the filler opening of the first two-bit triplet pilot valve 181, the first oil outlet of the first two-bit triplet pilot valve 181 is communicated with the control port of the first cartridge valve 171, the second oil outlet of the first two-bit triplet pilot valve 181 is communicated with fuel tank 1, and the 4th hydraulic fluid port of two-position four way change valve 3 is communicated with fuel tank 1.
The first pilot pressure control port of 3-position 4-way electro-hydraulic reversing valve 6 and the 4th pilot pressure control port that is positioned at described the first pilot pressure control port opposite side are communicated with the filler opening 24 of this elevating system respectively, and the 3rd pilot pressure control port that 3-position 4-way electro-hydraulic reversing valve 6 is positioned at the second pilot pressure control port of the first pilot pressure control port homonymy and is positioned at described the second pilot pressure control port opposite side is communicated with fuel tank 1 respectively.The first hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6 is communicated with the filler opening 24 of this elevating system, the second hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6 is communicated with the first hydraulic fluid port of the first cartridge valve 171, the second hydraulic fluid port of the first cartridge valve 171 is communicated with the rodless cavity of the first hoist cylinder 141, the 3rd hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6 and the rod chamber of the first hoist cylinder 141, the 4th hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6 is communicated with fuel tank 1.
The first hydraulic fluid port of three position four-way directional control valve 2 is communicated with the filler opening 24 of this elevating system, on second hydraulic fluid port and first of three position four-way directional control valve 2, the rodless cavity of plugging pin oil cylinder 101 is communicated with, the 3rd hydraulic fluid port of three position four-way directional control valve 2 is communicated with the rodless cavity of first time plugging pin oil cylinder 102, and the 4th hydraulic fluid port of three position four-way directional control valve 2 is communicated with fuel tank 1.
On first, the rod chamber of the rod chamber of plugging pin oil cylinder 101 and first time plugging pin oil cylinder 102 is communicated with the filler opening 24 of this elevating system respectively.
Further, this elevating system also comprises hydraulic lock 5, the second hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6 and the 3rd hydraulic fluid port are communicated with the first filler opening and second filler opening of hydraulic lock 5 respectively, the first oil outlet of hydraulic lock 5 is communicated with the first hydraulic fluid port of the first cartridge valve 171, and the second oil outlet of hydraulic lock 5 is communicated with the rod chamber of the first hoist cylinder 141.
Further, this elevating system also comprises: the second hoist cylinder 142, the 3rd hoist cylinder 143, the 4th hoist cylinder 144, the second cartridge valve 172, the 3rd cartridge valve 173, the 4th cartridge valve 174, the second two-bit triplet pilot valve 182, the 3rd two-bit triplet pilot valve 183 and the 4th two-bit triplet pilot valve 184; The filler opening of the second two-bit triplet pilot valve 182, the 3rd two-bit triplet pilot valve 183 and the 4th two-bit triplet pilot valve 184 is communicated with the 3rd hydraulic fluid port of two-position four way change valve 3 respectively, the first oil outlet of the second two-bit triplet pilot valve 182, the 3rd two-bit triplet pilot valve 183 and the 4th two-bit triplet pilot valve 184 is communicated with the control port of the second cartridge valve 172, the 3rd cartridge valve 173 and the 4th cartridge valve 174 respectively, and the second oil outlet of the second two-bit triplet pilot valve 182, the 3rd two-bit triplet pilot valve 183 and the 4th two-bit triplet pilot valve 184 is communicated with fuel tank 1; The first oil outlet of hydraulic lock 5 is communicated with the first hydraulic fluid port of the second cartridge valve 172, the 3rd cartridge valve 173 and the 4th cartridge valve 174 respectively, the second hydraulic fluid port of the second cartridge valve 172, the 3rd cartridge valve 173 and the 4th cartridge valve 174 is communicated with the rodless cavity of the second hoist cylinder 142, the 3rd hoist cylinder 143 and the 4th hoist cylinder 144 respectively, and the rod chamber of the second hoist cylinder 142, the 3rd hoist cylinder 143 and the 4th hoist cylinder 144 is communicated with the second oil outlet of hydraulic lock 5.
further, the first hoist cylinder 141, the second hoist cylinder 142, the rodless cavity of the 3rd hoist cylinder 143 and the 4th hoist cylinder 144 respectively with the first cartridge valve 171, the second cartridge valve 172, be disposed with the first relief valve 151 on oil circuit between the second hydraulic fluid port of the 3rd cartridge valve 173 and the 4th cartridge valve 174, the second relief valve 152, the 3rd relief valve 153 and the 4th relief valve 154, the first relief valves 151, the second relief valve 152, the oil outlet of the 3rd relief valve 153 and the 4th relief valve 154 is communicated with filler opening and the fuel tank 1 of four the first one-way valves 21 respectively, the first relief valve 151, the second relief valve 152, the oil outlet of the 3rd relief valve 153 and the 4th relief valve 154 also respectively with filler opening and first hoist cylinder 141 of four the second one-way valves 22, the second hoist cylinder 142, the rod chamber of the 3rd hoist cylinder 143 and the 4th hoist cylinder 144 is communicated with, and wherein, load increases suddenly in the jack-up unit course of action, exceeds four relief valves 151, 152, 153, during 154 setting value, a part of pressure oil that exceeds is through four relief valves 151, 152, 153, the 154 and first one-way valve 21 flow back into fuel tank 1, simultaneously, another part pressure oil that exceeds enters four hoist cylinders 141,142,143,144 rod chamber through the second one-way valve 22 and pipeline ball valve 20, piston rod is reclaimed suddenly the suction sky that causes carry out repairing, the safe handling of four hoist cylinders of protection.
further, this elevating system also comprises: the first pipeline explosion-proof valve 161, the second pipeline explosion-proof valve 162, the 3rd pipeline explosion-proof valve 163 and the 4th pipeline explosion-proof valve 164, oil circuit between the rodless cavity of the first hoist cylinder 141 and the first plug-in mounting 171 is communicated with the oil outlet of the first pipeline explosion-proof valve 161, oil circuit between the rodless cavity of the second hoist cylinder 142 and the second plug-in mounting 172 is communicated with the oil outlet of the second pipeline explosion-proof valve 162, oil circuit between the rodless cavity of the 3rd hoist cylinder 143 and the 3rd plug-in mounting 173 is communicated with the oil outlet of the 3rd pipeline explosion-proof valve 163, oil circuit between the rodless cavity of the 4th hoist cylinder 144 and the 4th plug-in mounting 174 is communicated with the oil outlet of the 4th pipeline explosion-proof valve 164, the first pipeline explosion-proof valve 161, the second pipeline explosion-proof valve 162, the filler opening of the 3rd pipeline explosion-proof valve 163 and the 4th pipeline explosion-proof valve 164 is interconnected.The filler opening of the first pipeline explosion-proof valve 161, the second pipeline explosion-proof valve 162, the 3rd pipeline explosion-proof valve 163 and the 4th pipeline explosion-proof valve 164 is by series connection mutually, be for the pressure that keeps four hoist cylinders 141,142,143,144 rodless cavity equates at any time, guarantee the synchronization accuracy of the lifting of spud leg.
Further, this elevating system also comprises: plugging pin oil cylinder 111 and second time plugging pin oil cylinder 112 on second, on second, the rodless cavity of plugging pin oil cylinder 111 is communicated with the second hydraulic fluid port of three position four-way directional control valve 2, and the rod chamber of plugging pin oil cylinder 111 is communicated with the filler opening of this elevating system on second; The rodless cavity of second time plugging pin oil cylinder 112 is communicated with the 3rd hydraulic fluid port of three position four-way directional control valve 2, and the rod chamber of second time plugging pin oil cylinder 112 is communicated with the filler opening of this elevating system 24.
Further, this elevating system also comprises three position four-way electromagnetic valve 7, the first hydraulic fluid port of three position four-way electromagnetic valve 7 is communicated with the 4th hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6, the second hydraulic fluid port of three position four-way electromagnetic valve 7 is communicated with the 3rd hydraulic fluid port of three position four-way electromagnetic valve 7, and the 4th hydraulic fluid port of three position four-way electromagnetic valve 7 is communicated with fuel tank 1.When spud leg rose or descend, the back pressure value of system under different operating modes was set in the switching of the left and right electromagnet by electromagnetic relief valve 7, guarantees the normal operation of system.
Further, this elevating system also comprises: the 5th relief valve 155 and the 6th relief valve 156, the oil outlet of the 5th relief valve 155 is communicated with the second hydraulic fluid port of three position four-way electromagnetic valve 7, the filler opening of the 5th relief valve 155 is communicated with the 3rd hydraulic fluid port of three position four-way electromagnetic valve 7, the filler opening of the 6th relief valve 156 is communicated with the second hydraulic fluid port of three position four-way electromagnetic valve 7, and the oil outlet of the 6th relief valve 156 is communicated with the 3rd hydraulic fluid port of three position four-way electromagnetic valve 7.
Further, this elevating system also comprises the 7th relief valve, and the filler opening of the 7th relief valve 157 and drain tap are communicated with the first hydraulic fluid port of three position four-way electromagnetic valve 7 respectively, and the oil outlet of the 7th relief valve 157 is communicated with the 4th hydraulic fluid port of three position four-way electromagnetic valve 7.
Particularly, be provided with main control valve group pressure transducer 9 on the oil circuit between the 4th hydraulic fluid port of the first hydraulic fluid port of three position four-way electromagnetic valve 7 and 3-position 4-way electro-hydraulic reversing valve 6; Be provided with hoist cylinder rod chamber pressure transducer 12 on oil circuit between the second oil outlet of hydraulic lock 5 and four hoist cylinders 141,142,143,144 rod chamber; Be provided with hoist cylinder rodless cavity pressure transducer 13 on oil circuit between hydraulic lock 5 first oil outlets and four hoist cylinders 141,142,143,144 rodless cavity.Magnitude of back pressure when wherein, main control valve group pressure transducer 9 is used for the oil return of monitoring elevating system; Hoist cylinder rod chamber pressure transducer 12, hoist cylinder rodless cavity pressure transducer 13 are respectively due to four hoist cylinders 141 of monitoring, 142,143,144 rod chamber and the pressure of rodless cavity.
Particularly, this elevating system also comprises pressure switch 8, and pressure switch 8 is communicated with hydraulic lock 5 second oil outlets, the alert detecting when pressure switch 8 is used for the unexpected booster of elevating system.
Particularly, be provided with plate-type non-return valve 4 on the 4th hydraulic fluid port of two-position four way change valve 3, the 4th hydraulic fluid port of two-position four way change valve 3 is communicated with the filler opening of plate-type non-return valve 4.
Particularly, be respectively arranged with four board-like ball valves 19 on the oil circuit between the oil outlet of the rodless cavity of the first hoist cylinder 141, the second hoist cylinder 142, the 3rd hoist cylinder 143 and the 4th hoist cylinder 144 and the first pipeline explosion-proof valve 161, the second pipeline explosion-proof valve 162, the 3rd pipeline explosion-proof valve 163 and the 4th pipeline explosion-proof valve 164.
Particularly, be provided with four pipeline ball valves 20 on the oil circuit between the oil outlet of the rod chamber of the first hoist cylinder 141, the second hoist cylinder 142, the 3rd hoist cylinder 143 and the 4th hoist cylinder 144 and the second one-way valve 22.
Particularly, be provided with four throttle valve 23 on the oil circuit at the filler opening place of the first two-bit triplet pilot valve 181, the second two-bit triplet pilot valve 182, the 3rd two-bit triplet pilot valve 183 and the 4th two-bit triplet pilot valve 184.
The working principle when elevating system that the embodiment of the present invention provides rises, specific as follows:
pressure oil is entered by the filler opening 24 of this elevating system, flow into simultaneously plugging pin oil cylinder 101 on first, on second, plugging pin oil cylinder 111, first time plugging pin oil cylinder 102, the rod chamber of second time plugging pin oil cylinder 112, the first hydraulic fluid port of three position four-way directional control valve 2, the first hydraulic fluid port of two-position four way change valve 3, the 4th pilot pressure control port of 3-position 4-way electro-hydraulic reversing valve 6 and the first hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6, because pressure oil flows in above-mentioned each valve simultaneously, so following minute three aspects illustrate respectively the flow direction of pressure oil, need to prove, these three aspects do not have sequencing.
3 left electromagnet of two-position four-way solenoid directional control valve get electric, pressure oil is flowed out by the 3rd hydraulic fluid port of two-position four-way solenoid directional control valve 3, flow to respectively the first two-bit triplet pilot valve 181, the second two-bit triplet pilot valve 182, the filler opening place of the 3rd two-bit triplet pilot valve 183 and the 4th two-bit triplet pilot valve 184, when the pressure of pressure oil reaches certain value, promote four two-bit triplet pilot valves 181, 182, 183, 184 spool commutation, make respectively four two-bit triplet pilot valves 181, 182, 183, 184 are in right position, at this moment, four cartridge valves 171, 172, 173, 174 control port is by four two-bit triplet pilot valves 181, 182, 183, 184 communicate with fuel tank 1, at this moment, as long as the pressure oil of certain pressure is arranged through four cartridge valves 171, 172, 173, 174 main valve plug, these four cartridge valves 171, 172, 173, 174 just can be opened.
the right position electromagnet of 3-position 4-way electro-hydraulic reversing valve 6 gets electric, the right position electromagnet of three position four-way electromagnetic valve 7 gets electric, pressure oil is through the second hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6 hydraulic lock 5 of flowing through, flow into respectively four cartridge valves 171, 172, 173, the first hydraulic fluid port of 174, open four cartridge valves 171, 172, 173, 174 spool, respectively by four cartridge valves 171, 172, 173, the second hydraulic fluid port of 174 flows out, four the pipeline explosion-proof valves 161 of flowing through respectively again, 162, 163, 164 and board-like ball valve 19, flow into four hoist cylinders 141, 142, 143, 144 rodless cavity, this moment four hoist cylinders 141, 142, 143, 144 rodless cavity volume increases, piston rod is protruding, the promotion jack-up unit rises, simultaneously, four hoist cylinders 141,142,143,144 rod chamber pressure oil discharge, the pipeline ball valve 20 of flowing through, the hydraulic lock 5 of flowing through, at this moment, three position four-way electromagnetic valve 7 is in right position, and the elevating system return oil pressure is selected minimum pressure values, pressure oil flows into the 3rd hydraulic fluid port of 3-position 4-way electro-hydraulic reversing valve 6, flows back to fuel tank 1 through three position four-way electromagnetic valve 7.
pressure oil process three position four-way directional control valve 2, when three position four-way directional control valve 2 is in meta, two upper plugging pin oil cylinder 101, 111 and two lower plugging pin oil cylinder 102, 112 rodless cavity has pressure oil to enter, due to two upper plugging pin oil cylinder 101, 111 and two lower plugging pin oil cylinder 102, 112 rod chamber also has pressure to enter, so two upper plugging pin oil cylinder 101, 111 and two lower plugging pin oil cylinder 102, 112 are in differential state, due to the rodless cavity area greater than the rod chamber area, so two upper plugging pin oil cylinder 101, 111 and two lower plugging pin oil cylinder 102, 112 are in the state that piston rod stretches out all the time, namely keep two upper plugging pin oil cylinder 101, 111 and two lower plugging pin oil cylinder 102, 112 is to be in the state that inserts in the spud leg pin-and-hole all the time, when any end electromagnet of three position four-way directional control valve 2 get electric, two upper plugging pin oil cylinder 101, 111 and two lower plugging pin oil cylinder 102, 112 can keep one group of plugging pin oil cylinder to be in piston rod stretches out state, namely remains one group of latch in the spud leg pin-and-hole, guarantees platform safety.
The valve group quantity that the embodiment of the present invention adopts is few, has simplified the oil circuit control of elevating system of the present invention, has reduced the cost of production of elevating system; In addition, the embodiment of the present invention selects the mode of Differential Control that two upper plugging pin oil cylinder and two lower plugging pin oil cylinder are controlled, make the spud leg lifting can continuous differential operation, and the embodiment of the present invention is provided with a plurality of pipeline explosion-proof valves and is used for main control valve group pressure transducer, hoist cylinder rod chamber pressure transducer, hoist cylinder rodless cavity pressure transducer and the pressure switch that oil circuit is monitored, can effective monitoring oil circuit of the present invention, improve Security of the present invention.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. hydraulic bolt formula oil cylinder elevating system, it is characterized in that, described system comprises: plugging pin oil cylinder, first time plugging pin oil cylinder, three position four-way directional control valve, two-position four way change valve, the first cartridge valve, the first two-bit triplet pilot valve and 3-position 4-way electro-hydraulic reversing valve on the first hoist cylinder, first;
The first hydraulic fluid port of described two-position four way change valve is communicated with the filler opening of elevating system, the second hydraulic fluid port of described two-position four way change valve is closed, the 3rd hydraulic fluid port of described two-position four way change valve is communicated with the filler opening of described the first two-bit triplet pilot valve, the first oil outlet of described the first two-bit triplet pilot valve is communicated with the control port of described the first cartridge valve, the second oil outlet of described the first two-bit triplet pilot valve is communicated with fuel tank, and the 4th hydraulic fluid port of described two-position four way change valve is communicated with described fuel tank;
The first pilot pressure control port of described 3-position 4-way electro-hydraulic reversing valve and the 4th pilot pressure control port that is positioned at described the first pilot pressure control port opposite side are communicated with the filler opening of described elevating system respectively, and the 3rd pilot pressure control port that described 3-position 4-way electro-hydraulic reversing valve is positioned at the second pilot pressure control port of described the first pilot pressure control port homonymy and is positioned at described the second pilot pressure control port opposite side is communicated with described fuel tank respectively;
The first hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with the filler opening of described elevating system, the second hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with the first hydraulic fluid port of described the first cartridge valve, the second hydraulic fluid port of described the first cartridge valve is communicated with the rodless cavity of described the first hoist cylinder, the 3rd hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with the rod chamber of described the first hoist cylinder, and the 4th hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve is communicated with described fuel tank;
The first hydraulic fluid port of described three position four-way directional control valve is communicated with the filler opening of described elevating system, on the second hydraulic fluid port of described three position four-way directional control valve and described first, the rodless cavity of plugging pin oil cylinder is communicated with, the 3rd hydraulic fluid port of described three position four-way directional control valve is communicated with the rodless cavity of described first time plugging pin oil cylinder, and the 4th hydraulic fluid port of described three position four-way directional control valve is communicated with described fuel tank;
On described first, the rod chamber of the rod chamber of plugging pin oil cylinder and described first time plugging pin oil cylinder is communicated with the filler opening of described elevating system respectively.
2. elevating system according to claim 1, it is characterized in that, described elevating system also comprises hydraulic lock, the second hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve and the 3rd hydraulic fluid port are communicated with the first filler opening and second filler opening of described hydraulic lock respectively, the first oil outlet of described hydraulic lock is communicated with the first hydraulic fluid port of described the first cartridge valve, and the second oil outlet of described hydraulic lock is communicated with the rodless cavity of described the first hoist cylinder.
3. elevating system according to claim 2, it is characterized in that, described elevating system also comprises: the second hoist cylinder, the 3rd hoist cylinder, the 4th hoist cylinder, the second cartridge valve, the 3rd cartridge valve, the 4th cartridge valve, the second two-bit triplet pilot valve, the 3rd two-bit triplet pilot valve and the 4th two-bit triplet pilot valve, described the second two-bit triplet pilot valve, the filler opening of described the 3rd two-bit triplet pilot valve and described the 4th two-bit triplet pilot valve is communicated with the 3rd hydraulic fluid port of described two-position four way change valve respectively, described the second two-bit triplet pilot valve, the first oil outlet of described the 3rd two-bit triplet pilot valve and described the 4th two-bit triplet pilot valve respectively with described the second cartridge valve, the control port of described the 3rd cartridge valve and described the 4th cartridge valve is communicated with, described the second two-bit triplet pilot valve, the second oil outlet of described the 3rd two-bit triplet pilot valve and described the 4th two-bit triplet pilot valve is communicated with described fuel tank respectively, the first oil outlet of described hydraulic lock is communicated with the first hydraulic fluid port of described the second cartridge valve, described the 3rd cartridge valve and described the 4th cartridge valve respectively, the second hydraulic fluid port of described the second cartridge valve, described the 3rd cartridge valve and described the 4th cartridge valve is communicated with the rodless cavity of described the second hoist cylinder, described the 3rd hoist cylinder and described the 4th hoist cylinder respectively, and the rod chamber of described the second hoist cylinder, described the 3rd hoist cylinder and described the 4th hoist cylinder is communicated with the second oil outlet of described hydraulic lock.
4. elevating system according to claim 3, it is characterized in that, described the first hoist cylinder, described the second hoist cylinder, the rodless cavity of described the 3rd hoist cylinder and described the 4th hoist cylinder respectively with described the first cartridge valve, described the second cartridge valve, be disposed with described the first relief valve on oil circuit between the second hydraulic fluid port of described the 3rd cartridge valve and described the 4th cartridge valve, described the second relief valve, described the 3rd relief valve and described the 4th relief valve, described the first relief valve, described the second relief valve, the oil outlet of described the 3rd relief valve and described the 4th relief valve is communicated with filler opening and the described fuel tank of four the first one-way valves respectively, described the first relief valve, described the second relief valve, the oil outlet of described the 3rd relief valve and described the 4th relief valve also respectively with filler opening and described first hoist cylinder of four the second one-way valves, described the second hoist cylinder, the rod chamber of described the 3rd hoist cylinder and described the 4th hoist cylinder is communicated with.
5. elevating system according to claim 4, it is characterized in that, described elevating system also comprises: the first pipeline explosion-proof valve, the second pipeline explosion-proof valve, the 3rd pipeline explosion-proof valve and the 4th pipeline explosion-proof valve, oil circuit between the rodless cavity of described the first hoist cylinder and described the first cartridge valve is communicated with the oil outlet of described the first pipeline explosion-proof valve, oil circuit between the rodless cavity of described the second hoist cylinder and described the second cartridge valve is communicated with the oil outlet of described the second pipeline explosion-proof valve, oil circuit between the rodless cavity of described the 3rd hoist cylinder and described the 3rd cartridge valve is communicated with the oil outlet of described the 3rd pipeline explosion-proof valve, oil circuit between the rodless cavity of described the 4th hoist cylinder and described the 4th cartridge valve is communicated with the oil outlet of described the 4th pipeline explosion-proof valve, described the first pipeline explosion-proof valve, described the second pipeline explosion-proof valve, the filler opening of described the 3rd pipeline explosion-proof valve and described the 4th pipeline explosion-proof valve is interconnected.
6. elevating system according to claim 1, it is characterized in that, described elevating system also comprises: plugging pin oil cylinder and second time plugging pin oil cylinder on second, on described second, the rodless cavity of plugging pin oil cylinder is communicated with the second hydraulic fluid port of described three position four-way directional control valve, and the rod chamber of plugging pin oil cylinder is communicated with the filler opening of described elevating system on described second; The rodless cavity of described second time plugging pin oil cylinder is communicated with the 3rd hydraulic fluid port of described three position four-way directional control valve, and the rod chamber of described second time plugging pin oil cylinder is communicated with the filler opening of described elevating system.
7. elevating system according to claim 1, it is characterized in that, described elevating system also comprises three position four-way electromagnetic valve, the first hydraulic fluid port of described three position four-way electromagnetic valve is communicated with the 4th hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve, the second hydraulic fluid port of described three position four-way electromagnetic valve is communicated with the 3rd hydraulic fluid port of described three position four-way electromagnetic valve, and the 4th hydraulic fluid port of described three position four-way electromagnetic valve is communicated with described fuel tank.
8. elevating system according to claim 7, it is characterized in that, described elevating system also comprises: the 5th relief valve and the 6th relief valve, the oil outlet of described the 5th relief valve is communicated with the second hydraulic fluid port of described three position four-way electromagnetic valve, the filler opening of described the 5th relief valve is communicated with the 3rd hydraulic fluid port of described three position four-way electromagnetic valve, the filler opening of described the 6th relief valve is communicated with the second hydraulic fluid port of described three position four-way electromagnetic valve, and the oil outlet of described the 6th relief valve is communicated with the 3rd hydraulic fluid port of described three position four-way electromagnetic valve.
9. elevating system according to claim 7, it is characterized in that, described elevating system also comprises the 7th relief valve, the filler opening of described the 7th relief valve and drain tap are communicated with the first hydraulic fluid port of described three position four-way electromagnetic valve respectively, and the oil outlet of described the 7th relief valve is communicated with the 4th hydraulic fluid port of described three position four-way electromagnetic valve.
10. according to claim 1-9 described elevating systems of any one, is characterized in that, is provided with main control valve group pressure transducer on the oil circuit between the first hydraulic fluid port of described three position four-way electromagnetic valve and the 4th hydraulic fluid port of described 3-position 4-way electro-hydraulic reversing valve; Be provided with hoist cylinder rod chamber pressure transducer on oil circuit between the second oil outlet of described hydraulic lock and the rod chamber of described hoist cylinder; Be provided with hoist cylinder rodless cavity pressure transducer on oil circuit between the rodless cavity of described hydraulic lock the first oil outlet and described hoist cylinder; Be provided with pressure switch on described hydraulic lock the second oil outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055142.3A CN103122879B (en) | 2013-02-21 | 2013-02-21 | A kind of hydraulic bolt formula oil cylinder elevating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055142.3A CN103122879B (en) | 2013-02-21 | 2013-02-21 | A kind of hydraulic bolt formula oil cylinder elevating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103122879A true CN103122879A (en) | 2013-05-29 |
| CN103122879B CN103122879B (en) | 2015-07-29 |
Family
ID=48453969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310055142.3A Active CN103122879B (en) | 2013-02-21 | 2013-02-21 | A kind of hydraulic bolt formula oil cylinder elevating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103122879B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994111A (en) * | 2014-04-16 | 2014-08-20 | 武汉船用机械有限责任公司 | Hydraulic control system of hydraulic bolt lifting platform |
| CN104454714A (en) * | 2014-09-29 | 2015-03-25 | 武汉船用机械有限责任公司 | Hydraulic power control system for hydraulic plug type lifting system |
| CN105927603A (en) * | 2016-06-17 | 2016-09-07 | 浙江瑞澄木业有限公司 | Hydraulic press for recombined wood floors of fast-growing wood fibers |
| CN106194866A (en) * | 2016-08-25 | 2016-12-07 | 武汉船用机械有限责任公司 | The continuous lifting hydraulic control system of ocean platform |
| CN106246632A (en) * | 2016-09-18 | 2016-12-21 | 上海衡拓船舶设备有限公司 | The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system |
| CN106246625A (en) * | 2016-08-05 | 2016-12-21 | 武汉船用机械有限责任公司 | Jack-up unit hydraulic control system |
| CN108194435A (en) * | 2018-03-29 | 2018-06-22 | 大连华锐重工集团股份有限公司 | A kind of bolt-type ocean lifting platform synchronization hydraulic system and its control method |
| CN113685394A (en) * | 2021-08-31 | 2021-11-23 | 徐州徐工矿业机械有限公司 | High-pressure large-flow oil cylinder regeneration hydraulic system of excavator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065094A (en) * | 1976-08-19 | 1977-12-27 | Parker-Hannifin Corporation | Hydraulic actuator |
| JP2000160539A (en) * | 1998-11-30 | 2000-06-13 | Shinko Sangyo Kk | Hydraulic device used for raising equipment of movable gate |
| JP2006257829A (en) * | 2005-03-18 | 2006-09-28 | Kyowa Seisakusho:Kk | Automatic tide gate equipment of land lock |
| CN102011387A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic lifting system with self-installed oil production platform |
| CN102011386A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Lifting pull-plug pin system of self-installed production platform |
| CN102079298A (en) * | 2010-12-28 | 2011-06-01 | 三一重工股份有限公司 | Mobile engineering machine and control system of support leg thereof |
| CN102241371A (en) * | 2011-03-31 | 2011-11-16 | 武汉理工大学 | Hydraulic system applied to multi-spud leg lifting mechanism |
| CN102936889A (en) * | 2012-11-19 | 2013-02-20 | 武汉船用机械有限责任公司 | Hydraulic lifting system for safety brake protection control |
-
2013
- 2013-02-21 CN CN201310055142.3A patent/CN103122879B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065094A (en) * | 1976-08-19 | 1977-12-27 | Parker-Hannifin Corporation | Hydraulic actuator |
| JP2000160539A (en) * | 1998-11-30 | 2000-06-13 | Shinko Sangyo Kk | Hydraulic device used for raising equipment of movable gate |
| JP2006257829A (en) * | 2005-03-18 | 2006-09-28 | Kyowa Seisakusho:Kk | Automatic tide gate equipment of land lock |
| CN102011387A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic lifting system with self-installed oil production platform |
| CN102011386A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Lifting pull-plug pin system of self-installed production platform |
| CN102079298A (en) * | 2010-12-28 | 2011-06-01 | 三一重工股份有限公司 | Mobile engineering machine and control system of support leg thereof |
| CN102241371A (en) * | 2011-03-31 | 2011-11-16 | 武汉理工大学 | Hydraulic system applied to multi-spud leg lifting mechanism |
| CN102936889A (en) * | 2012-11-19 | 2013-02-20 | 武汉船用机械有限责任公司 | Hydraulic lifting system for safety brake protection control |
Non-Patent Citations (1)
| Title |
|---|
| 车畅: "插销爬杆型风电安装船升降装置液压与控制系统设计", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994111A (en) * | 2014-04-16 | 2014-08-20 | 武汉船用机械有限责任公司 | Hydraulic control system of hydraulic bolt lifting platform |
| CN104454714A (en) * | 2014-09-29 | 2015-03-25 | 武汉船用机械有限责任公司 | Hydraulic power control system for hydraulic plug type lifting system |
| CN105927603A (en) * | 2016-06-17 | 2016-09-07 | 浙江瑞澄木业有限公司 | Hydraulic press for recombined wood floors of fast-growing wood fibers |
| CN106246625A (en) * | 2016-08-05 | 2016-12-21 | 武汉船用机械有限责任公司 | Jack-up unit hydraulic control system |
| CN106246625B (en) * | 2016-08-05 | 2018-03-20 | 武汉船用机械有限责任公司 | Jack-up unit hydraulic control system |
| CN106194866A (en) * | 2016-08-25 | 2016-12-07 | 武汉船用机械有限责任公司 | The continuous lifting hydraulic control system of ocean platform |
| 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 |
| CN106246632A (en) * | 2016-09-18 | 2016-12-21 | 上海衡拓船舶设备有限公司 | The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system |
| CN106246632B (en) * | 2016-09-18 | 2017-12-15 | 上海衡拓船舶设备有限公司 | The spud leg fast lifting hydraulic circuit of hydraulic bolt formula jacking system |
| CN108194435A (en) * | 2018-03-29 | 2018-06-22 | 大连华锐重工集团股份有限公司 | A kind of bolt-type ocean lifting platform synchronization hydraulic system and its control method |
| CN108194435B (en) * | 2018-03-29 | 2023-09-12 | 大连华锐重工集团股份有限公司 | Bolt type marine lifting platform synchronous hydraulic system and control method thereof |
| CN113685394A (en) * | 2021-08-31 | 2021-11-23 | 徐州徐工矿业机械有限公司 | High-pressure large-flow oil cylinder regeneration hydraulic system of excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103122879B (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103122879B (en) | A kind of hydraulic bolt formula oil cylinder elevating system | |
| CN204200730U (en) | A kind of hydraulic system of pin-type lifting device | |
| CN202833008U (en) | Concrete pump and hydraulic system thereof | |
| CN103643709B (en) | Hydraulic excavator for mine swing arm hydraulic control system | |
| CN203892283U (en) | Hydraulic system for controlling synchronous motion of dual cylinders | |
| CN111810477B (en) | Hydraulic system for bolt lifting device | |
| CN206035914U (en) | Four jar synchronous hydraulic system of automobile elevator | |
| CN201891689U (en) | Cartridge inserted two-position three-way electro-hydraulic reversing valve | |
| CN201554009U (en) | Piston-type double hanging point hydraulic headstock gear | |
| CN106368200B (en) | The hydraulic bolt jacking system of self-elevating ocean platform | |
| CN205013408U (en) | Differential hydraulic control device is entirely cut to steel scrap | |
| CN107725500B (en) | A kind of cylinder type hydraulic system for lifting | |
| CN201560422U (en) | Electro-hydraulic proportional control piston-type single-hoisting-point hydraulic hoist | |
| CN102878141B (en) | Combined type rotary motor reversion-preventing buffering balanced valve | |
| CN109973449B (en) | Hydraulic control system of lifting platform | |
| CN103994111A (en) | Hydraulic control system of hydraulic bolt lifting platform | |
| CN107061377B (en) | A kind of heavy duty lifting electrohydraulic control system | |
| CN202954380U (en) | Hydraulic bucket rod control circuit for hydraulic excavating machine | |
| CN2878758Y (en) | Integrated multi-change valve for loader | |
| CN202381429U (en) | Forward jumping prevention control valve of crane telescopic oil cylinder and crane telescopic system | |
| CN203394737U (en) | Concrete delivery pump integrated valve block with high-and-low voltage switching function | |
| CN202659609U (en) | Combined control valve, hydraulic control system of cranes and crane | |
| CN102304931A (en) | Hydraulic energy-saving control system and method for loader movable arm | |
| CN2588103Y (en) | Energy-saving self-locking hydraulic controlled one direction multi-way change valve | |
| CN201588194U (en) | Piston single hoisting-point hydraulic hoist |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |