CN205260483U - Ships and light boats bow door play to put controlling means - Google Patents
Ships and light boats bow door play to put controlling means Download PDFInfo
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- CN205260483U CN205260483U CN201521115668.7U CN201521115668U CN205260483U CN 205260483 U CN205260483 U CN 205260483U CN 201521115668 U CN201521115668 U CN 201521115668U CN 205260483 U CN205260483 U CN 205260483U
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Abstract
The utility model relates to a ships and light boats bow door play to put controlling means, including the oil tank, inhale oil filter, oil pump, check valve, electro -hydraulic directional valve, first one -way proportinal flow valve, the one -way proportinal flow valve of second, the single piston rod hydro -cylinder of first two effects, the single piston rod hydro -cylinder of the two effects of second, a one -way throttle valve, the 2nd one -way throttle valve, hand -operated direction valve, overflow valve, return oil filter group and PLC controllers, improve the control accuracy that the bow door rises to put through the PLC sensor, realize that goods and materials safety in the ship, quick loading and unloading carry.
Description
Technical field
The utility model relates to rising of a kind of ships and light boats bow door and puts control device, and particularly a kind of bow door of ships and light boats rises and puts process monitoring and the device of controlling in real time.
Background technology
Ships and light boats are rising to An Ding beach while putting bow door; because bridge operation personnel's sight line is subject to the obstruction of large hatchcover; cannot accurately judge a relieving degree of bow door; must stand in the large hatchcover front end of fore to operating personnel's indication information of putting bow door by an observer; these technological means fall behind; and ship rises on the severe situation Xia Ding beach of meteorological condition while putting bow door, traditional method meeting crisis observer's life security affects material safety, loading and unloading fast in ship simultaneously.
Ships and light boats bow door rises puts that to control what adopt be hydraulic control system, provides hydraulic oil to supply with two hydraulic jacks by hydraulic pump, drives steel wire rope to control bow door rise and put by hydraulic jack. But this cover control system is in the time putting bow door, and what lean on is the self gravitation of bow door, and in the time that bow door is opened under self gravitation effect, in-oil cylinder fluid is pushed back fuel tank very soon, therefore puts the speed of bow door. Especially, while needing cut to put because of situation in the process of putting bow door, the inertia of bow door motion makes steel wire rope be severely affected power, thereby even makes rope loosing or fracture cause serious accident, poor stability. In original hydraulic system, be to realize by the restriction aperture in adjustment one-way throttle valve the speed of putting bow door that regulates. When adjustment, also must must ensure that two restriction apertures are consistent, in case two door cylinder force inequalities. Because being controls the speed of putting bow door by controlling the flow of one-way throttle valve, and be to be realized by the aperture of handle adjusting joint head piece by the flow of choke valve, its precision is not high, and the self gravitation that remains the bow door leaning on is put bow door, if the asynchronous meeting of oil cylinder causes bow door unbalance loading in the process of putting bow door, when serious, even cause bow door hinge break, the major accident that bow door drops. Affect material safety, loading and unloading fast in ship.
Utility model content
The purpose of this utility model is to overcome prior art shortcoming provides rising of a kind of ships and light boats bow door to put control device, improves bow door work the control accuracy of putting by PLC sensor, realizes material safety, loading and unloading fast in ship.
For solving the problems of the technologies described above, the technical solution of the utility model is:
Control device is put in rising of a kind of ships and light boats bow door, comprise fuel tank, oil absorption filter, oil pump, check valve, electro-hydraulic directional valve, the first unidirectional proportional flow control valve, the second unidirectional proportional flow control valve, the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder, the first one-way throttle valve, the second one-way throttle valve, hand-operated direction valve, overflow valve, return filter group and PLC controller, fuel tank is connected with oil absorption filter by the first pipeline, the first pipeline is provided with the first valve, oil absorption filter is connected with oil pump by second pipe, second pipe is provided with the second valve, between oil pump and check valve, be connected by the 3rd pipeline, between check valve and electro-hydraulic directional valve, be connected by the 4th pipeline, electro-hydraulic directional valve is by the 5th pipeline, the 6th pipeline respectively with the first unidirectional proportional flow control valve, the second unidirectional proportional flow control valve is connected, the first unidirectional proportional flow control valve is connected with the first double acting single-piston rod oil cylinder by the 7th pipeline, the 7th pipeline is provided with the 3rd valve, the second unidirectional proportional flow control valve is connected with the second double acting single-piston rod oil cylinder by the 8th pipeline, the 8th pipeline is provided with the 4th valve, the first one-way throttle valve is connected with the 7th pipeline by the 9th pipeline, the second one-way throttle valve is connected with the 8th pipeline by the tenth pipeline, the first one-way throttle valve, the second one-way throttle valve branch is connected with hand-operated direction valve with the 12 pipeline by the 11 pipeline, between hand-operated direction valve and return filter group, be connected by the 13 pipeline, between the 3rd pipeline and the 13 pipeline, be connected by the 14 pipeline, overflow valve is arranged on the 14 pipeline, return filter group is made up of two return filters, each return filter one end is connected with the 13 pipeline by the 15 pipeline, the other end is connected with fuel tank by the 16 pipeline, the 15 pipeline is provided with the 5th valve, the 16 pipeline is provided with the 6th valve, described the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder is by the 17 pipeline and electro-hydraulic directional valve, hand-operated direction valve is connected, the 17 pipeline comprises main pipeline, the first subtube, the second subtube, the 3rd subtube and the 4th subtube, the first subtube, the second subtube is connected with one end of main pipeline, the 3rd subtube and the 4th subtube are connected with the other end of main pipeline, the first subtube is connected with the first double acting single-piston rod oil cylinder, the second subtube is connected with the second double acting single-piston rod oil cylinder, the 3rd subtube is connected with electro-hydraulic directional valve, the 4th subtube is connected with hand-operated direction valve, between described electro-hydraulic directional valve and hand-operated direction valve, is connected by the 18 pipeline,
Between described PLC controller and the first unidirectional proportional flow control valve, the second unidirectional proportional flow control valve, pass through electrical connection.
Control device is put in rising of above-mentioned a kind of ships and light boats bow door, wherein, described the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder includes cylinder body, plunger, compress end cap, the first pulley yoke, the second pulley yoke, the first pulley, the second pulley and the 3rd pulley, described cylinder body is provided with the first oil inlet and oil return mouth and the second oil inlet and oil return mouth, in cylinder body, be provided with the movable chamber of an end opening, described compression end cap is fixed on the openend of cylinder body, described plunger is divided into movable end and stiff end, plunger is through compressing end cap, make movable end be positioned at movable chamber, movable end is provided with sealing-plug, described the first pulley yoke comprises the first bracing frame and the first rotating shaft, the first bracing frame is fixed on the not openend of cylinder body, the first pulley is fixed in the first bracing frame by the first rotating shaft is rotating, described the second pulley yoke comprises the second bracing frame and the second rotating shaft, the second pulley yoke is fixed on and compresses on end cap, described the second pulley, the 3rd pulley is fixed in the second bracing frame by the second rotating shaft is rotating.
Control device is put in rising of above-mentioned a kind of ships and light boats bow door, and wherein, described electro-hydraulic directional valve is 3-position 4-way M type electro-hydraulic directional valve.
Control method of the present utility model is as follows:
1. a bow door
While playing bow door, first start oil pump, now, the oil that oil pump is discharged flows back to fuel tank through the first valve, the second valve, and now pressure fuel pump is lower;
(1) driver's cabin has been handled bow door
Press bow door button, the energising of electro-hydraulic directional valve left end electromagnet, main valve guiding valve moves to right, the pressure oil that oil pump is discharged is through electro-hydraulic directional valve, check valve in two unidirectional proportional flow control valves enters the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder, plunger is ejected, be coiled in the first double acting single-piston rod oil cylinder, cable wire tension on the second double acting single-piston rod oil cylinder, bow door is packed up, cable wire one end is fixed on bow door, cable wire is walked around the 3rd pulley successively, the first pulley, the second pulley, finally be fixed on the hull that is positioned at the first pulley one side, for controlling the unlatching and closure of bow door, because the first pulley is fixed on double acting single-piston rod oil cylinder, play the effect of fixed pulley, the second pulley and the 3rd pulley are along with plunger moves, be equivalent to play the effect of movable pulley, double acting single-piston rod oil cylinder is by fixed pulley and movable pulley mating reaction, reduce and opened and closed the required active force of bow door, oil return is through electro-hydraulic directional valve, hand-operated direction valve, return filter flows back to oil cylinder,
(2) manual control plays bow door
When electro-hydraulic directional valve or proportional flow control valve break down cannot move time, hand-operated direction valve has been pulled to door position, reversal valve guiding valve moves to right, the check valve of the pressure oil that oil pump is discharged in electro-hydraulic directional valve, hand-operated direction valve, two one-way throttle valves enters the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder, plunger is ejected, be coiled in the cable wire tension on the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder the 3rd pulley, bow door is packed up, and oil return is flowed back to oil cylinder through hand-operated direction valve stream, return filter;
2. put bow door
(1) driver's cabin is handled and is put bow door
Press driver's cabin and put bow door button, the energising of electro-hydraulic directional valve right-hand member electromagnet, main valve guiding valve moves to left,
The pressure oil that oil pump is discharged enters the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder through electro-hydraulic directional valve, make plunger reverse ejection, oil return is flowed back to oil cylinder through the proportional flow control valve in unidirectional proportional flow control valve, electro-hydraulic directional valve, hand-operated direction valve stream, return filter, in plunger retraction oil cylinder, cable wire is loosened, and bow door is put down. The restriction aperture of the proportional flow control valve in oil return process in unidirectional proportional flow control valve is automatically to regulate by the size of current of input proportion electro-magnet under the control of PLC according to measurement parameter or actual needs, thereby can control in real time according to bow door under ships and light boats state automatic releasing or as required the speed of putting bow door;
(2) bow door is put in manual control
When electro-hydraulic directional valve or proportional flow control valve break down cannot move time, hand-operated direction valve is pulled and put a position, reversal valve guiding valve moves to left, under the effect of bow door gravity, make plunger pressurized by cable wire, choke valve, hand-operated direction valve, the return filter of in-oil cylinder oil in one-way throttle valve pushed back fuel tank, in plunger retraction oil cylinder, cable wire is loosened, bow door is put down, because the aperture armrest handle of the choke valve restriction in one-way throttle valve regulates, the speed of putting bow door after regulating cannot be controlled as required in real time.
The beneficial effects of the utility model are:
1. replace original ram cylinder with double acting single-piston rod oil cylinder, put the proportional flow control valve that on the outlet oil circuit of bow door, corresponding two oil cylinders arrange respectively with check valve at 3-position 4-way M type electro-hydraulic directional valve and form proportionality velocity modulation loop, the proportionality velocity modulation loop of two oil cylinders is with parallel form setting, thereby utilize PLC controller to carry out control ratio flow valve and accurately control as required the speed of putting bow door, and the two cylinder force inequalities that occur can prevent from putting bow door time cause bow door to put inclined to one side problem.
2. in new hydraulic control system, design manual operation control system, in the time that electro-hydraulic directional valve or proportional flow control valve break down, can complete corresponding bow door by hand-operated direction valve rises and puts operation, ensure primary demand, in the time that hydraulic system breaks down, can stop bow door by bridge control console rises and puts operation, prevent the generation of major accident, improve the safety and reliability of whole control system.
3. control in real time bow door by PLC controller and rise and put, to save behind beach, top goods and materials winding interval in ship, do not need observer to observe bow door on the bow and work the state of putting, ensured boat working personnel's personal safety simultaneously.
Brief description of the drawings
Fig. 1 is the utility model system diagram.
Fig. 2 is the utility model the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder cutaway view.
Detailed description of the invention
Rising of a kind of ships and light boats bow door put control device and comprised fuel tank 3 as shown in the figure, oil absorption filter 4, oil pump 5, check valve 6, electro-hydraulic directional valve 7, the first unidirectional proportional flow control valve 8, the second unidirectional proportional flow control valve 9, the first double acting single-piston rod oil cylinder 10, the second double acting single-piston rod oil cylinder 11, the first one-way throttle valve 12, the second one-way throttle valve 13, hand-operated direction valve 14, overflow valve 15, return filter group 16 and PLC controller 2, fuel tank 3 is connected with oil absorption filter 4 by the first pipeline 17, the first pipeline 17 is provided with the first valve 18, oil absorption filter 4 is connected with oil pump 5 by second pipe 19, second pipe 19 is provided with the second valve 20, between oil pump 5 and check valve 6, be connected by the 3rd pipeline 21, between check valve 6 and electro-hydraulic directional valve 7, be connected by the 4th pipeline 22, described electro-hydraulic directional valve 7 is 3-position 4-way M type electro-hydraulic directional valve, electro-hydraulic directional valve 7 is by the 5th pipeline 23, the 6th pipeline 24 respectively with the first unidirectional proportional flow control valve 8, the second unidirectional proportional flow control valve 9 is connected, the first unidirectional proportional flow control valve 8 is connected by the 7th pipeline 25 and the first double acting single-piston rod oil cylinder 10, the 7th pipeline 25 is provided with the 3rd valve 26, the second unidirectional proportional flow control valve 13 is connected with the second double acting single-piston rod oil cylinder 11 by the 8th pipeline 27, the 8th pipeline 27 is provided with the 4th valve 28, the first one-way throttle valve 12 is connected with the 7th pipeline 25 by the 9th pipeline 29, the second one-way throttle valve 13 is connected with the 8th pipeline 27 by the tenth pipeline 30, the first one-way throttle valve 12, the second one-way throttle valve 13 branches are connected with hand-operated direction valve 14 with the 12 pipeline 32 by the 11 pipeline 31, between hand-operated direction valve 14 and return filter group 16, be connected by the 13 pipeline 33, between the 3rd pipeline the 21 and the 13 pipeline 33, be connected by the 14 pipeline 34, overflow valve 15 is arranged on the 14 pipeline 34, return filter group 16 is made up of two return filters 35, each return filter 35 one end are connected with the 13 pipeline 33 by the 15 pipeline 36, the other end is connected with fuel tank 3 by the 16 pipeline 37, the 15 pipeline 36 is provided with the 5th valve 38, the 16 pipeline 37 is provided with the 6th valve 39, described the first double acting single-piston rod oil cylinder 10, the second double acting single-piston rod oil cylinder 11 is by the 17 pipeline 40 and electro-hydraulic directional valve 7, hand-operated direction valve 14 is connected, the 17 pipeline 40 comprises main pipeline 41, the first subtube 42, the second subtube 43, the 3rd subtube 44 and the 4th subtube 45, the first subtube 42, the second subtube 43 is connected with one end of main pipeline 41, the 3rd subtube 44 and the 4th subtube 45 are connected with the other end of main pipeline 41, the first subtube 42 is connected with the first double acting single-piston rod oil cylinder 10, the second subtube 43 is connected with the second double acting single-piston rod oil cylinder 11, the 3rd subtube 44 is connected with electro-hydraulic directional valve 7, the 4th subtube 45 is connected with hand-operated direction valve 14, between described electro-hydraulic directional valve 7 and hand-operated direction valve 14, is connected by the 18 pipeline 82,
Described PLC controller 2 and the first unidirectional proportional flow control valve 8, the second unidirectional proportional flow control valve 9 are by electrical connection.
Described the first double acting single-piston rod oil cylinder 10, the second double acting single-piston rod oil cylinder 11 includes cylinder body 64, plunger 65, compress end cap 66, the first pulley yoke 67, the second pulley yoke 68, the first pulley 69, the second pulley 70 and the 3rd pulley 71, described cylinder body 64 is provided with the first oil inlet and oil return mouth 72 and the second oil inlet and oil return mouth 73, in cylinder body 64, be provided with the movable chamber 74 of an end opening, described compression end cap 66 is fixed on the openend of cylinder body, described plunger 65 is divided into movable end 75 and stiff end 76, plunger 65 is through compressing end cap 66, make movable end 75 be positioned at movable chamber 74, movable end 75 is provided with sealing-plug 77, described the first pulley yoke 67 comprises the first bracing frame 78 and the first rotating shaft 79, the first bracing frame 78 is fixed on the not openend of cylinder body, the first pulley 69 is fixed in the first bracing frame 78 by the first rotating shaft 79 is rotating, described the second pulley yoke 68 comprises the second bracing frame 80 and the second rotating shaft 81, the second pulley yoke 68 is fixed on and compresses on end cap 66, described the second pulley 70, the 3rd pulley 71 is fixed in the second bracing frame 80 by the second rotating shaft 81 is rotating.
Control method of the present utility model is as follows:
1. a bow door
While playing bow door, first start oil pump, now, the oil that oil pump is discharged flows back to fuel tank through the first valve, the second valve, and now pressure fuel pump is lower;
(1) driver's cabin has been handled bow door
Press bow door button, the energising of electro-hydraulic directional valve left end electromagnet, main valve guiding valve moves to right, the pressure oil that oil pump is discharged is through electro-hydraulic directional valve, check valve in two unidirectional proportional flow control valves enters the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder, plunger is ejected, be coiled in the first double acting single-piston rod oil cylinder, cable wire tension on the second double acting single-piston rod oil cylinder, bow door is packed up, cable wire one end is fixed on bow door, cable wire is walked around the 3rd pulley successively, the first pulley, the second pulley, finally be fixed on the hull that is positioned at the first pulley one side, for controlling the unlatching and closure of bow door, because the first pulley is fixed on double acting single-piston rod oil cylinder, play the effect of fixed pulley, the second pulley and the 3rd pulley are along with plunger moves, be equivalent to play the effect of movable pulley, double acting single-piston rod oil cylinder is by fixed pulley and movable pulley mating reaction, reduce and opened and closed the required active force of bow door, oil return is through electro-hydraulic directional valve, hand-operated direction valve, return filter flows back to oil cylinder,
(2) manual control plays bow door
When electro-hydraulic directional valve or proportional flow control valve break down cannot move time, hand-operated direction valve has been pulled to door position, reversal valve guiding valve moves to right, the check valve of the pressure oil that oil pump is discharged in electro-hydraulic directional valve, hand-operated direction valve, two one-way throttle valves enters the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder, plunger is ejected, be coiled in the cable wire tension on the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder the 3rd pulley, bow door is packed up, and oil return is flowed back to oil cylinder through hand-operated direction valve stream, return filter;
2. put bow door
(1) driver's cabin is handled and is put bow door
Press driver's cabin and put bow door button, the energising of electro-hydraulic directional valve right-hand member electromagnet, main valve guiding valve moves to left,
The pressure oil that oil pump is discharged enters the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder through electro-hydraulic directional valve, make plunger reverse ejection, oil return is flowed back to oil cylinder through the proportional flow control valve in unidirectional proportional flow control valve, electro-hydraulic directional valve, hand-operated direction valve stream, return filter, in plunger retraction oil cylinder, cable wire is loosened, and bow door is put down. The restriction aperture of the proportional flow control valve in oil return process in unidirectional proportional flow control valve is automatically to regulate by the size of current of input proportion electro-magnet under the control of PLC according to measurement parameter or actual needs, thereby can control in real time according to bow door under ships and light boats state automatic releasing or as required the speed of putting bow door;
(2) bow door is put in manual control
When electro-hydraulic directional valve or proportional flow control valve break down cannot move time, hand-operated direction valve is pulled and put a position, reversal valve guiding valve moves to left, under the effect of bow door gravity, make plunger pressurized by cable wire, choke valve, hand-operated direction valve, the return filter of in-oil cylinder oil in one-way throttle valve pushed back fuel tank, in plunger retraction oil cylinder, cable wire is loosened, bow door is put down, because the aperture armrest handle of the choke valve restriction in one-way throttle valve regulates, the speed of putting bow door after regulating cannot be controlled as required in real time.
Here description of the present utility model and application is illustrative; not want scope of the present utility model to limit in the above-described embodiments; therefore, the utility model is not subject to the restriction of the present embodiment, and the technical scheme that any employing equivalence replacement obtains is all in the scope of the utility model protection.
Claims (3)
1. rising of a ships and light boats bow door put control device, it is characterized by, comprise fuel tank, oil absorption filter, oil pump, check valve, electro-hydraulic directional valve, the first unidirectional proportional flow control valve, the second unidirectional proportional flow control valve, the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder, the first one-way throttle valve, the second one-way throttle valve, hand-operated direction valve, overflow valve, return filter group and PLC controller, fuel tank is connected with oil absorption filter by the first pipeline, the first pipeline is provided with the first valve, oil absorption filter is connected with oil pump by second pipe, second pipe is provided with the second valve, between oil pump and check valve, be connected by the 3rd pipeline, between check valve and electro-hydraulic directional valve, be connected by the 4th pipeline, electro-hydraulic directional valve is by the 5th pipeline, the 6th pipeline respectively with the first unidirectional proportional flow control valve, the second unidirectional proportional flow control valve is connected, the first unidirectional proportional flow control valve is connected with the first double acting single-piston rod oil cylinder by the 7th pipeline, the 7th pipeline is provided with the 3rd valve, the second unidirectional proportional flow control valve is connected with the second double acting single-piston rod oil cylinder by the 8th pipeline, the 8th pipeline is provided with the 4th valve, the first one-way throttle valve is connected with the 7th pipeline by the 9th pipeline, the second one-way throttle valve is connected with the 8th pipeline by the tenth pipeline, the first one-way throttle valve, the second one-way throttle valve branch is connected with hand-operated direction valve with the 12 pipeline by the 11 pipeline, between hand-operated direction valve and return filter group, be connected by the 13 pipeline, between the 3rd pipeline and the 13 pipeline, be connected by the 14 pipeline, overflow valve is arranged on the 14 pipeline, return filter group is made up of two return filters, each return filter one end is connected with the 13 pipeline by the 15 pipeline, the other end is connected with fuel tank by the 16 pipeline, the 15 pipeline is provided with the 5th valve, the 16 pipeline is provided with the 6th valve, described the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder is by the 17 pipeline and electro-hydraulic directional valve, hand-operated direction valve is connected, the 17 pipeline comprises main pipeline, the first subtube, the second subtube, the 3rd subtube and the 4th subtube, the first subtube, the second subtube is connected with one end of main pipeline, the 3rd subtube and the 4th subtube are connected with the other end of main pipeline, the first subtube is connected with the first double acting single-piston rod oil cylinder, the second subtube is connected with the second double acting single-piston rod oil cylinder, the 3rd subtube is connected with electro-hydraulic directional valve, the 4th subtube is connected with hand-operated direction valve, between described electro-hydraulic directional valve and hand-operated direction valve, is connected by the 18 pipeline,
Between described PLC controller and the first unidirectional proportional flow control valve, the second unidirectional proportional flow control valve, pass through electrical connection.
2. rising of a kind of ships and light boats bow door as claimed in claim 1 put control device, it is characterized by, described the first double acting single-piston rod oil cylinder, the second double acting single-piston rod oil cylinder includes cylinder body, plunger, compress end cap, the first pulley yoke, the second pulley yoke, the first pulley, the second pulley and the 3rd pulley, described cylinder body is provided with the first oil inlet and oil return mouth and the second oil inlet and oil return mouth, in cylinder body, be provided with the movable chamber of an end opening, described compression end cap is fixed on the openend of cylinder body, described plunger is divided into movable end and stiff end, plunger is through compressing end cap, make movable end be positioned at movable chamber, movable end is provided with sealing-plug, described the first pulley yoke comprises the first bracing frame and the first rotating shaft, the first bracing frame is fixed on the not openend of cylinder body, the first pulley is fixed in the first bracing frame by the first rotating shaft is rotating, described the second pulley yoke comprises the second bracing frame and the second rotating shaft, the second pulley yoke is fixed on and compresses on end cap, described the second pulley, the 3rd pulley is fixed in the second bracing frame by the second rotating shaft is rotating.
3. rising of a kind of ships and light boats bow door as claimed in claim 1 put control device, it is characterized by, and described electro-hydraulic directional valve is 3-position 4-way M type electro-hydraulic directional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521115668.7U CN205260483U (en) | 2015-12-30 | 2015-12-30 | Ships and light boats bow door play to put controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521115668.7U CN205260483U (en) | 2015-12-30 | 2015-12-30 | Ships and light boats bow door play to put controlling means |
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| Publication Number | Publication Date |
|---|---|
| CN205260483U true CN205260483U (en) | 2016-05-25 |
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ID=56002013
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521115668.7U Expired - Fee Related CN205260483U (en) | 2015-12-30 | 2015-12-30 | Ships and light boats bow door play to put controlling means |
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| CN (1) | CN205260483U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654557A (en) * | 2016-07-26 | 2018-02-02 | 中船绿洲镇江船舶辅机有限公司 | A kind of loaded self-adaptive hydraulic buffer system |
| CN109367708A (en) * | 2018-11-29 | 2019-02-22 | 广州发展瑞华新能源电动船有限公司 | A kind of PLC control system applied to the above pure electric vehicle bulk freighter of kiloton |
-
2015
- 2015-12-30 CN CN201521115668.7U patent/CN205260483U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654557A (en) * | 2016-07-26 | 2018-02-02 | 中船绿洲镇江船舶辅机有限公司 | A kind of loaded self-adaptive hydraulic buffer system |
| CN109367708A (en) * | 2018-11-29 | 2019-02-22 | 广州发展瑞华新能源电动船有限公司 | A kind of PLC control system applied to the above pure electric vehicle bulk freighter of kiloton |
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Granted publication date: 20160525 Termination date: 20171230 |