CN104132020B - Hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device - Google Patents
Hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device Download PDFInfo
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- CN104132020B CN104132020B CN201410342770.4A CN201410342770A CN104132020B CN 104132020 B CN104132020 B CN 104132020B CN 201410342770 A CN201410342770 A CN 201410342770A CN 104132020 B CN104132020 B CN 104132020B
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Abstract
The invention discloses hydraulic valve bank used by a kind of bridge of boats springboard hydraulic pressure turn-over device, including reversal valve, stop valve, hydraulic control one-way valve, described hydraulic control one-way valve has valve body, valve body offers two that connect reversal valve upper hydraulic fluid ports, connect two lower hydraulic fluid ports of oil cylinder, core assembly it is provided with in body cavity, core assembly includes the valve seat of pair of opposing, the spool of oil circuit control break-make it is provided with in valve seat, it is provided with movable top in body cavity between spool and opens or closes the slide bar of valve closing core, big 1.5～the 3mm of distance between spool inner face described in length ratio between slide bar two ends. slide bar extended length is a bit larger tham the distance between two spool inner faces by the present invention, and when springboard rises, two spools are opened, oil cylinder one end fuel feeding, one end oil return, and springboard starts steady rise, when springboard declines, power oil, without fuel feeding, relies on the deadweight of springboard, and two spools one are opened, and another is closed, it is ensured that oil cylinder even running under passive delivery situation.
Description
Technical field
The present invention relates to technical field of hydraulic, hydraulic valve bank used by especially a kind of bridge of boats springboard hydraulic pressure turn-over device.
Background technology
In existing bridge of boats springboard hydraulic pressure upset system, springboard realizes upset by flexible promotion of cylinder piston rod, in switching process, when system stops supply hydraulic power oil, hydraulic control one-way valve two ends in system hydraulic valve bank are in the completely closed state, springboard is when relying on self gravitation to continue upset, due in same displacement situation, the volumetric ratio rodless cavity of cylinder rod chamber is little, hydraulic oil now is easy to blockage phenomenon when flowing to rod chamber from rodless cavity, springboard also can overturn stopping simultaneously, therefore for solving this problem, usual way is one choke valve of increase on oil circuit, by choke valve releasing portion separatory force feed, springboard is made to continue to overturn by self gravitation, but rodless cavity can be made again vacuum is formed when hydraulic oil flows to rodless cavity from rod chamber, cause springboard upset unstable, even stop, and solution to this problem only reopens power source, it is provided that hydraulic oil, hydraulic control one-way valve is made to be again turned on, supplement the vacuum in oil cylinder rodless cavity, therefore existing hydraulic system, it is ensured that steadily upset and the springboard stop motion at an arbitrary position of bridge of boats springboard, system structure will certainly be caused to complicate, operating process loaded down with trivial detailsization.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency in prior art, hydraulic valve bank used by a kind of bridge of boats springboard hydraulic pressure turn-over device is provided, realize hydraulic jack even running in passive delivery situation of hydraulic system, ensure bridge of boats springboard upset stationarity and in switching process springboard can stop motion at an arbitrary position, simplied system structure and operating process.
The technical solution adopted for the present invention to solve the technical problems is: hydraulic valve bank used by a kind of bridge of boats springboard hydraulic pressure turn-over device, reversal valve including connection hydraulic power supply, it is located at the stop valve between oil cylinder inlet and outlet of fuel channel, oil circuit between reversal valve and stop valve is provided with hydraulic control one-way valve, described hydraulic control one-way valve has valve body, valve body offers two that connect reversal valve upper hydraulic fluid ports, connect two lower hydraulic fluid ports of oil cylinder, it is provided with core assembly in body cavity between upper hydraulic fluid port and lower hydraulic fluid port, described core assembly includes the valve seat of pair of opposing, the spool of oil circuit control break-make it is provided with in described valve seat, it is provided with movable top in body cavity between described spool and opens or closes the slide bar of valve closing core, big 1.5～the 3mm of distance between spool inner face described in length ratio between slide bar two ends.
Specifically, described core assembly includes sealing the fixing seat being fixed on body cavity two ends compression valve seat respectively, there is between valve seat with fixing seat the internal cavity that accommodating spool moves and communicates with upper hydraulic fluid port, lower hydraulic fluid port, spool the inner has cone segments, valve seat the inner has the bellmouth matched with valve core cone section
For making spool Rapid reset, it is provided with top between described spool and fixing seat and is pressed on spool to make the spring of valve core reset.
Further, sliding shoe that described slide bar includes being slidably matched with body cavity wall, setting up the push rod in sliding shoe both sides Yu sliding shoe integrative-structure separately, described push rod pushes up the spool inner face being pressed in correspondence respectively.
Preferably, not only connected but also be in open mode for realizing two spools, the distance 2mm bigger than the distance between described spool inner face between described push rod outer end.
The invention has the beneficial effects as follows: the present invention is by improving original fluid-control one-way valve arrangement, increase the length of slide bar, make the distance that slide bar length is a bit larger tham between two spool inner faces, when needs springboard rises, power oil fuel feeding, due to slide bar effect, two spools of hydraulic control one-way valve fully open, thus realizing oil cylinder one end fuel feeding, one end oil return, springboard starts steady rise; When springboard declines, power oil is without fuel feeding, rely on the deadweight of springboard, two spools one of hydraulic control one-way valve are opened, another is closed, it is achieved thereby that the backflow of hydraulic oil and supplementing in oil cylinder, it is ensured that oil cylinder even running under passive delivery situation, it is ensured that steadily lifting and the springboard stop motion at an arbitrary position of bridge of boats springboard.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of hydraulic control one-way valve of the present invention.
In figure, on 1. reversal valve 2. oil cylinder 3. stop valve 4. hydraulic control one-way valve 5. valve bodies 6., seat 12. internal cavity 13. spring fixed by 7. times hydraulic fluid port 8. valve seat 9. spool 10. slide bar 10-1. sliding shoe 10-2. push rods 11. of hydraulic fluid port
Detailed description of the invention
Presently in connection with accompanying drawing and preferred embodiment, the present invention is further illustrated. These accompanying drawings are the schematic diagram of simplification, and the basic structure of the present invention is only described in a schematic way, and therefore it only shows the composition relevant with the present invention.
Hydraulic valve bank used by a kind of bridge of boats springboard hydraulic pressure turn-over device as shown in Figure 1 and Figure 2, including the reversal valve 1 of connection hydraulic power supply, the stop valve 3 that is located between oil cylinder 2 inlet and outlet of fuel channel, oil circuit between reversal valve 1 and stop valve 3 is provided with hydraulic control one-way valve 4, adjustment by hydraulic control one-way valve 4, it is achieved steadily upset and the even running of oil cylinder 2 in passive delivery situation of springboard.
Described hydraulic control one-way valve 4 has valve body 5, valve body 5 offers two that connect reversal valve 1 upper hydraulic fluid ports 6, connects two lower hydraulic fluid ports 7 of oil cylinder 2, wherein the lower hydraulic fluid port 7 on the left side connects the rod chamber of oil cylinder 2, the lower hydraulic fluid port 7 on the right connects the rodless cavity of oil cylinder 2, valve body 5 between upper hydraulic fluid port 6 and lower hydraulic fluid port 7 has stepped inner chamber, this inner chamber mid portion aperture is minimum, from inside to outside becomes big successively to two ends, and described interior intracavity is provided with the core assembly of oil circuit control break-make.
Specifically, described core assembly includes the valve seat 8 being apart arranged on valve body 5 inner chamber mid portion both sides a pair, the outermost end of valve body 5 inner chamber seals respectively and is fixed with fixing seat 11, valve seat 8 is pressed on valve body 5 inner chamber mid portion two sides by fixing seat 11, the spool 9 of oil circuit control break-make it is provided with in described valve seat 8, have between valve seat 8 and fixing seat 11 accommodating spool 9 move and with upper hydraulic fluid port 6, the internal cavity 12 that lower hydraulic fluid port 7 communicates, spool 9 the inner has cone segments, valve seat 8 the inner has the bellmouth matched with spool 9 cone segments, spool 9 rear end has cavity, fixing seat 11 has cavity equally towards spool 9 rear end side, the spring 13 that top is pressed on spool 9 cavity interior walls face it is provided with in the above-mentioned cavity communicated, the Rapid reset of spool 9 is realized by spring 13 when being acted on without hydraulic oil.
It is provided with slide bar 10 in valve body 5 inner chamber mid portion between described spool 9, described slide bar 10 includes the sliding shoe 10-1 being slidably matched with valve body 5 internal chamber wall, set up the push rod 10-2 in sliding shoe 10-1 both sides Yu sliding shoe 10-1 integrative-structure separately, sliding shoe 10-1 two sides are made slide bar 10 move by hydraulic oil effect, described push rod 10-2 pushes up spool 9 inner face being pressed in correspondence respectively, moved by oil pressure effect by slide bar 10, push rod 10-2 promote spool 9 cone segments depart from contacting of bellmouth of valve seat 8 and back down spool 9, or the bellmouth of the cone segments and valve seat 8 being acted on spool 9 by spring 13 is pressed into contact with and closes spool 9, the described distance 2mm bigger than the distance between described spool 9 inner face between push rod 10-2 outer end, so once after stop valve 3 opens, two spools 9 connect and two spools 9 are in open mode, at this moment bridge of boats springboard is in complete free state, when selected position fallen by bridge of boats springboard, close stop valve 3 bridge of boats springboard and regracting.
The course of action that the present invention is described is regained below for bridge of boats springboard:
Adjustable change valve 1 position to the left, the upper hydraulic fluid port 6 making the left side starts fuel feeding, when valve body 5 cavity position of hydraulic oil flow to hydraulic control one-way valve 4, hydraulic oil promotes left side spool 9 to left movement, now left side spool 9 is opened, simultaneously, hydraulic oil promotes slide bar 10 to move right, slide bar 10 promotes the right spool 9 to depart from and contacts cooperation between valve seat 8, the right spool 9 is opened, hydraulic oil flows to the rod chamber of oil cylinder 2 by the spool 9 on the left side through the lower hydraulic fluid port 7 on the left side, shift piston onto to move to rodless cavity, hydraulic oil in rodless cavity is discharged through the right spool 9 by the lower hydraulic fluid port 7 on the right, now, springboard starts stable withdrawal.
When oil cylinder 2 inner carrier move to springboard self-acting power can be relied on to move time, adjustable change valve 1 to centre position, make two upper hydraulic fluid ports 6 all not fuel feeding, stop valve 3 is closed simultaneously, oil cylinder 2 piston continues to move to rodless cavity under the effect that springboard is conducted oneself with dignity, now the spool 9 on the right of hydraulic control one-way valve 4 is moved to the left under spring 13 acts on, slide bar 10 spool 9 on the right is moved to the left under promoting simultaneously, the push rod 10-2 on slide bar 10 left side backs down left side spool 9, owing to the hydraulic oil in oil cylinder 2 rodless cavity is in compressive state under the effect of piston, hydraulic oil in rodless cavity enters in the spool 9 of the right, spool 9 cone segments promoting the right is pressed on the bellmouth of valve seat 8, the spool 9 on the right is closed, left side spool 9 is opened simultaneously, hydraulic oil in rodless cavity cannot be got rid of, piston is in halted state. now, springboard motion is in halted state, when stop valve 3 is opened, oil circuit between oil cylinder 2 rodless cavity and rod chamber is connected, on the right of hydraulic control one-way valve 4, the part of the hydraulic oil in valve seat 8 spool 9 through the left side is discharged, another part flows to the rod chamber of oil cylinder 2, continue to press on piston to move to rodless cavity direction, now, smoothly decline under the state that bridge of boats springboard begins at deadweight, as bridge of boats springboard 30mm about close to ground, close rapidly stop valve 3, make bridge of boats springboard slack, then again stop valve 3 is opened, bridge of boats springboard is steadily taken a seat immediately, by choke valve to control impact and the unstability brought when springboard is regained before avoiding.
When springboard stretches out, adjustable change valve 1 position to the right, namely the right upper hydraulic fluid port 6 oil-feed, course of action with above-mentioned in like manner.
Present invention improves over original hydraulic control one-way valve 4 structure, increase the length of slide bar 10 so that slide bar 10 length is a bit larger tham the distance between two spool 9 inner faces, two spools 9 one of hydraulic control one-way valve 4 can be made during work to open, another is closed.When needs springboard rises, power oil fuel feeding, owing to slide bar 10 acts on, two spools 9 of hydraulic control one-way valve 4 fully open, thus realizing oil cylinder 2 one end fuel feeding, one end oil return, springboard starts steady rise; When springboard declines, power oil is without fuel feeding, rely on the deadweight of springboard, two spools 9 one of hydraulic control one-way valve 4 are opened, another is closed, it is achieved thereby that the backflow of hydraulic oil and supplementing in oil cylinder 2, it is ensured that the oil cylinder 2 even running under passive delivery situation, it is ensured that steadily lifting and the springboard stop motion at an arbitrary position of bridge of boats springboard.
Above-described embodiment is only for illustrating technology design and the feature of the present invention; its object is to allow person skilled in the art will appreciate that present disclosure and to be carried out; can not limit the scope of the invention with this; all equivalences made according to spirit of the invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (5)
1. hydraulic valve bank used by a bridge of boats springboard hydraulic pressure turn-over device, reversal valve (1) including connection hydraulic power supply, it is located at the stop valve (3) between oil cylinder (2) inlet and outlet of fuel channel, oil circuit between reversal valve (1) and stop valve (3) is provided with hydraulic control one-way valve (4), it is characterized in that: described hydraulic control one-way valve (4) has valve body (5), valve body (5) offers two that connect reversal valve (1) upper hydraulic fluid ports (6), connect two lower hydraulic fluid ports (7) of oil cylinder (2), valve body (5) intracavity being positioned between hydraulic fluid port (6) and lower hydraulic fluid port (7) is provided with core assembly, described core assembly includes the valve seat (8) of pair of opposing, the spool (9) of oil circuit control break-make it is provided with in described valve seat (8), valve body (5) intracavity being positioned between described spool (9) is provided with movable top and opens or closes the slide bar (10) of valve closing core (9), big 1.5～the 3mm of distance between two spool (9) inner faces of length ratio between slide bar (10) two ends.
2. hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device according to claim 1, it is characterized in that: described core assembly includes sealing the fixing seat (11) being fixed on valve body (5) inner chamber two ends compression valve seat (8) respectively, there is between valve seat (8) with fixing seat (11) internal cavity (12) that accommodating spool (9) is mobile and communicates with upper hydraulic fluid port (6), lower hydraulic fluid port (7), spool (9) the inner has cone segments, and valve seat (8) the inner has the bellmouth matched with spool (9) cone segments.
3. hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device according to claim 2, is characterized in that: be provided with the spring (13) that top is pressed on spool (9) to make spool (9) reset between described spool (9) and fixing seat (11).
4. hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device according to claim 2, it is characterized in that: sliding shoe (10-1) that described slide bar (10) includes being slidably matched with valve body (5) internal chamber wall, set up the push rod (10-2) in sliding shoe (10-1) both sides Yu sliding shoe (10-1) integrative-structure separately, described push rod (10-2) pushes up spool (9) inner face being pressed in correspondence respectively.
5. hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device according to claim 4, is characterized in that: the described distance 2mm bigger than the distance between two spool (9) inner faces between push rod (10-2) outer end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342770.4A CN104132020B (en) | 2014-07-17 | 2014-07-17 | Hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410342770.4A CN104132020B (en) | 2014-07-17 | 2014-07-17 | Hydraulic valve bank used by bridge of boats springboard hydraulic pressure turn-over device |
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| CN104132020A CN104132020A (en) | 2014-11-05 |
| CN104132020B true CN104132020B (en) | 2016-06-15 |
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| CN108571488B (en) * | 2017-03-13 | 2024-01-23 | 上海融德机电工程设备有限公司 | Pulse type hydraulic partial pressure synchronous valve |
| PL3770479T3 (en) * | 2019-07-23 | 2023-01-02 | J. Juan, S.A.U. | Connection device for vehicle hydraulic systems, orientable connector and method of assembly associated therewith |
| CN112032128B (en) * | 2020-08-28 | 2022-07-29 | 广东韶钢松山股份有限公司 | Apron board oil cylinder lifting control system and apron board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU734024A1 (en) * | 1975-02-17 | 1980-05-15 | Головное Специальное Конструкторское Бюро По Проектированию Тяжелых Кранов | Arrangement for locking vehicle suspension |
| RU2011894C1 (en) * | 1991-07-15 | 1994-04-30 | Челябинский государственный технический университет | Two-way hydraulic lock |
| CN2212101Y (en) * | 1994-05-28 | 1995-11-08 | 兖州市圣达液压机械制造厂 | Two-way hydraulic lock |
| RU2131066C1 (en) * | 1997-08-20 | 1999-05-27 | Государственный научно-исследовательский тракторный институт "НАТИ" | Hydraulic distributor |
| CN2915928Y (en) * | 2006-06-13 | 2007-06-27 | 中国人民解放军总后勤部军事交通运输研究所 | Composite roll on/roll off gangplank |
| CN100593646C (en) * | 2008-07-31 | 2010-03-10 | 哈尔滨工业大学 | Unpowered oil supplied direct drive displacement control electrohydraulic servo- closed type oil source system |
| CN204003737U (en) * | 2014-07-17 | 2014-12-10 | 常州爱普超高压液压***有限公司 | Bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used |
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