CN104088827A - Hydraulic overturning device for pontoon bridge gangplank - Google Patents
Hydraulic overturning device for pontoon bridge gangplank Download PDFInfo
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- CN104088827A CN104088827A CN201410343187.5A CN201410343187A CN104088827A CN 104088827 A CN104088827 A CN 104088827A CN 201410343187 A CN201410343187 A CN 201410343187A CN 104088827 A CN104088827 A CN 104088827A
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- valve
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- boats
- bridge
- oil
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Abstract
The invention discloses a hydraulic overturning device for a pontoon bridge gangplank. The hydraulic overturning device for the pontoon bridge gangplank comprises an oil tank, a hydraulic pump, a control valve set and an oil cylinder. The control valve set comprises a reversing valve, a duplex hydraulic control one-way valve and a stop valve. The hydraulic control one-way valve comprises a valve body. A valve element assembly is arranged in the valve body inner cavity and comprises a pair of opposite valve bases. Valve elements for controlling switch-on or switch-off of an oil way are arranged in the valve bases, a sliding rod capable of moving to open or close the valve elements in a jacking mode is arranged between the valve elements, and the length between the two ends of the sliding rod is 1.5 mm to 3 mm larger than the distance between the inner end faces of the valve elements. The hydraulic overturning device is compact in structure and stable and reliable to work, the length of the sliding rod in the hydraulic control one-way valve is slightly larger than the distance between the inner end faces of the valve elements, so that backflow and supplementing of hydraulic oil in the oil cylinder can be achieved, it is guaranteed that the oil cylinder can run stably under the condition that no power supply exists, the pontoon bridge gangplank can be overturned stably and can stop at any position, labor intensity is reduced, and work efficiency is improved.
Description
Technical field
The present invention relates to technical field of hydraulic, especially a kind of hydraulic pressure installation that drives and control the upset of bridge of boats springboard.
Background technique
The upset of bridge of boats springboard in the past, originally generally take manpower control as main, rely on manpower that the pull-up of bridge of boats springboard upset are put in place, operating personnel's working strength is large, efficiency is low, and because bridge of boats springboard is heavier, worker is brought safely to adverse effect, therefore occurred afterwards that hydraulic pressure installation drove the form of bridge of boats springboard upset, utilize the cylinder piston rod in hydraulic system to connect bridge of boats springboard, by hydraulic oil, promote piston rod and stretch out or retract and realize the upset of bridge of boats springboard.Due in umklapp process, when bridge of boats springboard is during in plumbness, bridge of boats springboard is in the switching critical points of power, when power oil fuel cut-off, Pilot operated check valve two ends are closed completely, at bridge of boats springboard, by self gravitation, continue in the process of upset, due in same displacement situation, the volume ratio rodless cavity of cylinder rod chamber little, hydraulic oil easily results in blockage when flowing to rod chamber from rodless cavity, the upset of bridge of boats springboard is stopped, and in order to address this problem, conventional method is on oil circuit, to increase a throttle valve, by throttle valve, emit part hydraulic oil, bridge of boats springboard is continued by self gravitation motion upset.And when hydraulic oil flows to rodless cavity from rod chamber, can cause rodless cavity to form vacuum, the upset of bridge of boats springboard can be not steady, even stop, solution to this problem is only opened power source, again to hydraulic system, provides hydraulic oil, and the Pilot operated check valve in hydraulic system is opened, supplement vacuum, the upset of guarantee bridge of boats springboard steadily, therefore comparatively complicated in operation, the position that is also difficult to accurately control the transition point of bridge of boats springboard.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency in prior art, provide a kind of easy to operate, guarantee bridge of boats springboard steadily upset the bridge of boats springboard hydraulic pressure turn-over device that can stop in any given position.
The technical solution adopted for the present invention to solve the technical problems is: a kind of bridge of boats springboard hydraulic pressure turn-over device, comprise fuel tank, oil hydraulic pump, control valve group and oil cylinder, oil hydraulic pump is communicated with respectively fuel tank and control valve group, the bridge of boats springboard of the bridge of boats is connected on the piston rod of oil cylinder, described control valve group comprises selector valve, the Pilot operated check valve of twin and stop valve, selector valve one side is communicated with respectively oil hydraulic pump and fuel tank, selector valve opposite side is communicated with Pilot operated check valve, Pilot operated check valve is communicated with rodless cavity and the rod chamber of oil cylinder respectively, stop valve is located at Pilot operated check valve and leads between oil cylinder rodless cavity and the oil circuit of rod chamber, described Pilot operated check valve comprises valve body, on valve body, offer two upper hydraulic fluid ports connecting selector valve, connect two lower hydraulic fluid ports of oil cylinder, in body cavity between upper hydraulic fluid port and lower hydraulic fluid port, be provided with mangetic core assembly, described mangetic core assembly comprises the valve seat of pair of opposing, in described valve seat, be provided with the spool of oil circuit control break-make, in body cavity between described spool, be provided with movable top and open or close the slide bar that closes spool, large 1.5～the 3mm of distance described in Length Ratio between slide bar two ends between spool interior edge face.
Specifically, described mangetic core assembly also has sealing respectively and is fixed on the fixed base that body cavity two ends compress valve seat, between valve seat and fixed base, there is the inner cavity that accommodating spool moves and communicate with upper hydraulic fluid port, lower hydraulic fluid port, spool the inner has cone segments, valve seat the inner has the cone shape hole matching with valve core cone section
For realizing spool Rapid reset, between described spool and fixed base, be provided with top and be pressed in the spring that makes valve core reset on spool.
Further, described slide bar comprises the slide blocks that is slidably matched with body cavity wall, minute is located at the push rod of slide blocks both sides and slide blocks integrative-structure, and described push rod pushes up respectively and is pressed in corresponding spool interior edge face.
Preferably, in order to realize, two spools had not only been communicated with but also in open mode, the distance between described push rod outer end is than the large 2mm of distance between described spool interior edge face.
The invention has the beneficial effects as follows: in the present invention, when bridge of boats springboard rises, oil hydraulic pump fuel feeding, because the slide bar length in Pilot operated check valve is a bit larger tham the distance between spool interior edge face, two spools of Pilot operated check valve are fully opened, thereby realize oil cylinder one end fuel feeding, one end oil return, bridge of boats springboard starts steady rise; When bridge of boats springboard declines, oil hydraulic pump fuel cut-off, rely on the deadweight of bridge of boats springboard, one of two spool of Pilot operated check valve are opened, another is closed, thereby realized the backflow of hydraulic oil in oil cylinder and supplemented, having guaranteed the smooth running of oil cylinder under passive delivery situation, having guaranteed steady upset and the stop motion at an arbitrary position of bridge of boats springboard of bridge of boats springboard.Compact structure of the present invention, working stability is reliable, can reduce labor intensity, improves operating efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural principle schematic diagram of the present invention.
Fig. 2 is the structural representation of Pilot operated check valve of the present invention.
62. times hydraulic fluid ports of hydraulic fluid port, 63. valve seat 64. spool 65. slide bar 65-1. slide blocks 65-2 push rod 66. fixed base 67. inner cavity 68. spring 7. stop valves on 1. fuel tank 2. oil hydraulic pump 3. oil cylinder 4. bridge of boats springboard 5. selector valve 6. Pilot operated check valve 60. valve bodies 61. in figure
Embodiment
The present invention is further illustrated with preferred embodiment by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
A kind of bridge of boats springboard hydraulic pressure turn-over device as shown in Figure 1 and Figure 2, comprise fuel tank 1, oil hydraulic pump 2, control valve group and oil cylinder 3, oil hydraulic pump 2 is communicated with respectively fuel tank 1 and control valve group, bridge of boats springboard 4 is connected on the piston rod of oil cylinder 3, control valve group is controlled the commutation campaign of oil cylinder 3 and is realized stretching out and regaining of bridge of boats springboard 4, the oil return of oil cylinder 3 is flowed back to fuel tank 1 through control valve group, between oil hydraulic pump 2 and fuel tank 1, is provided with pressure release oil circuit, is provided with corresponding relief valve on pressure release oil circuit.
Specifically, described control valve group comprises Pilot operated check valve 6 and the stop valve 7 of selector valve 5, twin, selector valve 5 one sides are communicated with respectively oil hydraulic pump 2 and fuel tank 1, selector valve 5 opposite sides are communicated with Pilot operated check valve 6, Pilot operated check valve 6 is communicated with rodless cavity and the rod chamber of oil cylinder 3 respectively, and stop valve 7 is located at Pilot operated check valve 6 and leads between oil cylinder 3 rodless cavities and the oil circuit of rod chamber.
Described Pilot operated check valve 6 comprises valve body 60, on valve body 60, offer two upper hydraulic fluid ports 61 connecting selector valve 5, connect respectively two lower hydraulic fluid ports 62 of oil cylinder 3 rodless cavities and rod chamber, in valve body 60 inner chambers between upper hydraulic fluid port 61 and lower hydraulic fluid port 62, be provided with mangetic core assembly, described mangetic core assembly comprises a pair of valve seat 63 that is arranged on valve body 60 both sides apart, sealing is fixed on the fixed base 66 that valve body 60 inner chamber two ends compress valve seat 63 respectively, in described valve seat 63, be provided with the spool 64 of oil circuit control break-make, between valve seat 63 and fixed base 66, have that accommodating spool 64 moves and with upper hydraulic fluid port 61, the inner cavity 67 that lower hydraulic fluid port 62 communicates, spool 64 the inners have cone segments, valve seat 63 the inners have the cone shape hole matching with spool 64 cone segments, after spool 64 moves, the cone shape hole of its cone segments and valve seat 63 coordinates and contacts and close the corresponding oil circuit of this spool 64, spool 64 rear ends have cavity, fixed base 66 has cavity equally towards spool 64 rear end side, in the above-mentioned cavity communicating, be provided with top and be pressed in the spring 68 on spool 64 cavity internal faces, while acting on without hydraulic oil by spring 68, realize the Rapid reset of spool 64.
In valve body 60 inner chambers between described spool 64, be provided with the slide bar 65 that backs down or close spool 64 by mobile, described slide bar 65 comprises the slide blocks 65-1 being slidably matched with valve body 60 internal chamber walls, divide the push rod 65-2 that is located at slide blocks 65-1 both sides and slide blocks 65-1 integrative-structure, described push rod 65-2 pushes up respectively and is pressed in corresponding spool 64 interior edge faces, by slide bar 65, moved by oil pressure effect, push rod 65-2 promotes spool 64 cone segments disengagings and backs down spool 64 with valve seat 63 contacting of cone shape hole, or contacted with the cone shape hole of valve seat 63 compression by the spring 68 effect cone segments of spool 64 and close spool 64.Distance between described push rod 65-2 outer end is than the large 2mm of distance between described spool 64 interior edge faces, after once stop valve 7 is opened like this, two spools 64 connections and two spools 64 are in open mode, at this moment bridge of boats springboard 4 is in complete free state, when bridge of boats springboard 4 is fallen selected position, closing stop valve 7 bridge of boats springboards 4 is retractable.
Course of action of the present invention is summarized as follows:
(1) bridge of boats springboard 4 stretches out: close stop valve 7, selector valve 5 is adjusted to right positions, and primer fluid press pump 2, hydraulic oil enters oil cylinder 3 rodless cavities by right side oil circuit, the rod chamber oil return of oil cylinder 3, the protruding drive bridge of boats of oil cylinder 3 piston rod springboard 4 stretches out; When bridge of boats springboard 4, cross behind vertical position, open stop valve 7, oil hydraulic pump 2 fuel cut-offs, selector valve 5 is switched to neutral position, allows bridge of boats springboard 4 stretch out voluntarily by deadweight, arrives behind the position of appointment, closes stop valve 7, can allow bridge of boats springboard 4 stop stretching out.
(2) bridge of boats springboard 4 is regained: close stop valve 7, selector valve 5 is adjusted to leftward position, and primer fluid press pump 2, hydraulic oil is entered the rod chamber of oil cylinder 3 by left side oil circuit, the rodless cavity oil return of oil cylinder 3, oil cylinder 3 piston rods are retracted and are driven bridge of boats springboard 4 to regain; When bridge of boats springboard 4 is crossed behind vertical position, open stop valve 7, oil hydraulic pump 2 fuel cut-offs, selector valve 5 is switched to neutral position, allow bridge of boats springboard 4 by deadweight retraction voluntarily, until bridge of boats springboard 4 cuts out rapidly stop valve 7 while approaching the about 30mm of seat surface, make bridge of boats springboard 4 slack, again stop valve 7 is opened to bridge of boats springboard 4 and take a seat immediately, impulse ratio is more steady.
The bridge of boats springboard 4 of take is below regained the course of action of Pilot operated check valve 6 in example explanation the present invention:
Adjustable change valve 5 positions left, primer fluid press pump 2 makes the upper hydraulic fluid port 61 on the left side start fuel feeding, when hydraulic oil flows to the valve body 60 inner chamber position of Pilot operated check valve 6, hydraulic oil promotes left side spool 64 to left movement, now left side spool 64 is opened, simultaneously, hydraulic oil promotes slide bar 65 and moves right, the push rod 65-2 on slide bar 65 the right promote the right spool 64 depart from valve seat 63 between contact cooperation, the right spool 64 is opened, hydraulic oil flows to the rod chamber of oil cylinder 3 by the spool 64 on the left side through the lower hydraulic fluid port 62 on the left side, shifting piston onto moves to rodless cavity, hydraulic oil in rodless cavity is discharged through the right spool 64 by the lower hydraulic fluid port 62 on the right, now, bridge of boats springboard 4 starts to regain stably.
When oil cylinder 3 drives bridge of boats springboards 4 to move to can to rely on the 4 self gravitations motion of bridge of boats springboard, adjustable change valve 5 is to neutral position, make all fuel feeding not of two upper hydraulic fluid ports 61, stop valve 7 is closed simultaneously, oil cylinder 3 pistons continue to move to rodless cavity under the effect of bridge of boats springboard 4 deadweights, now the spool 64 on Pilot operated check valve 6 the right is moved to the left under spring 68 effects, slide bar 65 spool 4 is on the right moved to the left under promoting simultaneously, the push rod 10-2 on slide bar 65 left sides backs down left side spool 64, due to the hydraulic oil in oil cylinder 3 rodless cavities under the effect of piston in compressive state, hydraulic oil in rodless cavity enters in the spool 64 of the right, spool 64 cone segments that promote the right are pressed on the cone shape hole of valve seat 63, the spool 64 on the right is closed, left side spool 64 is opened simultaneously, hydraulic oil in oil cylinder 3 rodless cavities cannot be got rid of, piston is in halted state.Now, 4 motions of bridge of boats springboard are in halted state, when stop valve 7 is opened, oil circuit between oil cylinder 3 rodless cavities and rod chamber is connected, a hydraulic oil part in Pilot operated check valve 6 the right valve seats 63 is discharged through the spool 64 on the left side, another part flows to the rod chamber of oil cylinder 3, continuing to promote piston moves to rodless cavity direction, now, bridge of boats springboard 4 starts to decline reposefully under the state of deadweight, when bridge of boats springboard 4 approaches the about 30mm in ground, close rapidly stop valve 7, make bridge of boats springboard 4 slack, then again stop valve 7 is opened, bridge of boats springboard 4 is steadily taken a seat immediately, thereby by throttle valve, control impact and the unstability of bringing when bridge of boats springboard 4 is regained before having avoided.
When bridge of boats springboard 4 stretches out, adjustable change valve 5 positions are to the right, and the upper hydraulic fluid port 61 on the right is to the rodless cavity oil-feed of oil cylinder 3, course of action and in like manner above-mentioned.
In the present invention, due to the large 2mm of distance between two spool 64 interior edge faces of slide bar 65 Length Ratio in Pilot operated check valve 6, when bridge of boats springboard 4 rises, oil hydraulic pump fuel feeding, two spools 64 of Pilot operated check valve 6 are fully opened, thereby realize oil cylinder 3 one end fuel feeding, one end oil return, bridge of boats springboard 4 steadily rises; When bridge of boats springboard 4 declines, oil hydraulic pump 2 fuel cut-offs, rely on the deadweight of bridge of boats springboard 4,64 1 of two spools of Pilot operated check valve 6 are opened, another is closed, thereby realized the backflow of oil cylinder 3 interior hydraulic oil and supplemented, having guaranteed the smooth running of oil cylinder 3 under passive delivery situation, having guaranteed steady upset and bridge of boats springboard 4 stop motion at an arbitrary position of bridge of boats springboard 4.Compact structure of the present invention, working stability is reliable, can reduce labor intensity, improves operating efficiency.
Above-described embodiment is only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (5)
1. a bridge of boats springboard hydraulic pressure turn-over device, comprise fuel tank (1), oil hydraulic pump (2), control valve group and oil cylinder (3), oil hydraulic pump (2) is communicated with respectively fuel tank (1) and control valve group, bridge of boats springboard (4) is connected on the piston rod of oil cylinder (3), described control valve group comprises selector valve (5), the Pilot operated check valve of twin (6) and stop valve (7), selector valve (5) one sides are communicated with respectively oil hydraulic pump (2) and fuel tank (1), selector valve (5) opposite side is communicated with Pilot operated check valve (6), Pilot operated check valve (6) is communicated with rodless cavity and the rod chamber of oil cylinder (3) respectively, stop valve (7) is located at Pilot operated check valve (6) and leads between oil cylinder (3) rodless cavity and the oil circuit of rod chamber, it is characterized in that: described Pilot operated check valve (6) comprises valve body (60), on valve body (60), offer two upper hydraulic fluid ports (61) connecting selector valve (5), connect two lower hydraulic fluid ports (62) of oil cylinder (3), valve body (60) inner chamber being positioned between hydraulic fluid port (61) and lower hydraulic fluid port (62) is provided with mangetic core assembly, described mangetic core assembly comprises the valve seat (63) of pair of opposing, in described valve seat (63), be provided with the spool (64) of oil circuit control break-make, being positioned at valve body (60) inner chamber between described spool (64) is provided with movable top and opens or closes the slide bar (65) that closes spool (64), large 1.5～the 3mm of distance described in Length Ratio between slide bar (65) two ends between spool (64) interior edge face.
2. 8 bridge of boats springboard hydraulic pressure turn-over devices according to claim 1, it is characterized in that: described mangetic core assembly also has sealing respectively and is fixed on the fixed base (66) that valve body (60) inner chamber two ends compress valve seat (63), between valve seat (63) and fixed base (66), there is the inner cavity (67) that accommodating spool (64) is mobile and communicate with upper hydraulic fluid port (61), lower hydraulic fluid port (62), spool (64) the inner has cone segments, and valve seat (63) the inner has the cone shape hole matching with spool (64) cone segments.
3. bridge of boats springboard hydraulic pressure turn-over device according to claim 2, is characterized in that: between described spool (64) and fixed base (66), be provided with top and be pressed in the spring (68) that on spool (64), spool (64) is resetted.
4. bridge of boats springboard hydraulic pressure turn-over device according to claim 2, it is characterized in that: described slide bar (65) comprises the slide blocks (65-1) that is slidably matched with valve body (60) internal chamber wall, minute is located at the push rod (65-2) of slide blocks (65-1) both sides and slide blocks (65-1) integrative-structure, and described push rod (65-2) pushes up respectively and is pressed in corresponding spool (64) interior edge face.
5. bridge of boats springboard hydraulic pressure turn-over device according to claim 4, is characterized in that: the distance between described push rod (65-2) outer end is than the large 2mm of distance between described spool (64) interior edge face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343187.5A CN104088827B (en) | 2014-07-17 | 2014-07-17 | Bridge of boats springboard hydraulic pressure turn-over device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343187.5A CN104088827B (en) | 2014-07-17 | 2014-07-17 | Bridge of boats springboard hydraulic pressure turn-over device |
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| CN104088827A true CN104088827A (en) | 2014-10-08 |
| CN104088827B CN104088827B (en) | 2016-04-06 |
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| CN201410343187.5A Active CN104088827B (en) | 2014-07-17 | 2014-07-17 | Bridge of boats springboard hydraulic pressure turn-over device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035737A (en) * | 2017-06-21 | 2017-08-11 | 哈尔滨理工大学 | The electro-hydraulic driving load collaborative device of link containing flexible connected and its control method |
| CN108443248A (en) * | 2018-05-08 | 2018-08-24 | 哈尔滨理工大学 | Electro-hydraulic driving auxiliary device and its control method is adjusted in corner |
| CN112032128A (en) * | 2020-08-28 | 2020-12-04 | 广东韶钢松山股份有限公司 | Apron board oil cylinder lifting control system and apron board |
| CN114109956A (en) * | 2022-01-04 | 2022-03-01 | 力源液压（苏州）有限公司 | Two-way variable pump end cover assembly |
| CN114658707A (en) * | 2022-03-31 | 2022-06-24 | 中国船舶重工集团公司第七0七研究所九江分部 | Low-noise bidirectional servo pump source |
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| CN204003687U (en) * | 2014-07-17 | 2014-12-10 | 常州爱普超高压液压系统有限公司 | Bridge of boats springboard hydraulic pressure turn-over device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107035737A (en) * | 2017-06-21 | 2017-08-11 | 哈尔滨理工大学 | The electro-hydraulic driving load collaborative device of link containing flexible connected and its control method |
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| CN108443248A (en) * | 2018-05-08 | 2018-08-24 | 哈尔滨理工大学 | Electro-hydraulic driving auxiliary device and its control method is adjusted in corner |
| CN112032128A (en) * | 2020-08-28 | 2020-12-04 | 广东韶钢松山股份有限公司 | Apron board oil cylinder lifting control system and apron board |
| 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 |
| CN114109956A (en) * | 2022-01-04 | 2022-03-01 | 力源液压（苏州）有限公司 | Two-way variable pump end cover assembly |
| CN114658707A (en) * | 2022-03-31 | 2022-06-24 | 中国船舶重工集团公司第七0七研究所九江分部 | Low-noise bidirectional servo pump source |
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|---|---|
| CN104088827B (en) | 2016-04-06 |
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Effective date of registration: 20160224 Address after: North Park Hill Road 214500 Jingjiang city in Jiangsu province Taizhou City No. 18 Applicant after: JINGJIANG WEIYI INTELLECTUAL PROPERTY SERVICE CO., LTD. Address before: 213000 Jiangsu city of Changzhou province Hehai West New District No. 538 state electromechanical Park Building No. 2 Applicant before: CHANGZHOU AIPU ULTRA HIGH PRESSURE HYDRAULIC SYSTEM CO., LTD. |
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Effective date of registration: 20161115 Address after: 213000 Jiangsu city of Changzhou province Hehai West New District No. 538 state electromechanical Park Building No. 2 Patentee after: CHANGZHOU AIPU ULTRA HIGH PRESSURE HYDRAULIC SYSTEM CO., LTD. Address before: North Park Hill Road 214500 Jingjiang city in Jiangsu province Taizhou City No. 18 Patentee before: JINGJIANG WEIYI INTELLECTUAL PROPERTY SERVICE CO., LTD. |