CN204003737U

CN204003737U - Bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used

Info

Publication number: CN204003737U
Application number: CN201420397802.6U
Authority: CN
Inventors: 金忠
Original assignee: CHANGZHOU AIPU ULTRA HIGH PRESSURE HYDRAULIC SYSTEM Co Ltd
Current assignee: CHANGZHOU AIPU ULTRA HIGH PRESSURE HYDRAULIC SYSTEM Co Ltd
Priority date: 2014-07-17
Filing date: 2014-07-17
Publication date: 2014-12-10
Anticipated expiration: 2024-07-17

Abstract

The utility model discloses a kind of bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used, comprise selector valve, stop valve, Pilot operated check valve, described Pilot operated check valve has 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, be provided with mangetic core assembly, mangetic core assembly comprises the valve seat of pair of opposing, in valve seat, be provided with the spool of oil circuit control break-make, in body cavity between 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.The utility model lengthens slide bar length to be a bit larger tham two distances between spool interior edge face, and when springboard rises, two spools are opened, oil cylinder one end fuel feeding, and one end oil return, springboard starts steady rise; When springboard declines, power oil need not fuel feeding, relies on the deadweight of springboard, and two one of spools are opened, and another is closed, and guarantees the smooth running of oil cylinder under passive delivery situation.

Description

Bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used

Technical field

The utility model relates to technical field of hydraulic, especially a kind of bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used.

Background technique

In existing bridge of boats springboard hydraulic overturn system, springboard is realized upset by the flexible promotion of cylinder piston rod, in umklapp process, when system stop supplies hydraulic power oil, Pilot operated check valve two ends in system hydraulic valve bank are in buttoned-up status, springboard is when relying on self gravitation to continue upset, due in same displacement situation, the volume ratio rodless cavity of cylinder rod chamber is little, hydraulic oil is now easy to blockage phenomenon when rodless cavity flows to rod chamber, springboard also can overturn and stop simultaneously, therefore for addressing this problem, conventionally way is on oil circuit, to increase a throttle valve, by throttle valve, emit part hydraulic oil, make springboard continue to overturn by self gravitation, but when flowing to rodless cavity from rod chamber, hydraulic oil can make again rodless cavity form vacuum, cause springboard upset not steady, even stop, and solution to this problem only reopens power source, hydraulic oil is provided, Pilot operated check valve is opened again, supplement the vacuum in oil cylinder rodless cavity, therefore existing hydraulic system, guarantee steady upset and the springboard stop motion at an arbitrary position of bridge of boats springboard, will certainly cause system architecture complicated, loaded down with trivial detailsization of operating process.

Model utility content

The technical problems to be solved in the utility model is: overcome the deficiency in prior art, provide a kind of bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used, realize hydraulic jack smooth running in passive delivery situation of hydraulic system, guarantee upset stationarity and springboard stop motion at an arbitrary position, simplied system structure and the operating process in umklapp process of bridge of boats springboard.

The utility model solves the technological scheme that its technical problem adopts: a kind of bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used, comprise the selector valve that is communicated with hydraulic power supply, be located at the stop valve between oil cylinder inlet and outlet of fuel channel, oil circuit between selector valve and stop valve is provided with Pilot operated check valve, described Pilot operated check valve has 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 comprises that sealing is fixed on the fixed base that body cavity two ends compress valve seat respectively, 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 making 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 beneficial effects of the utility model are: the utility model is by improving original fluid-control one-way valve arrangement, lengthened the length of slide bar, make slide bar length be a bit larger tham two distances between spool interior edge face, when needs springboard rises, power oil fuel feeding, due to slide bar effect, two spools of Pilot operated check valve are opened completely, thereby realize oil cylinder one end fuel feeding, one end oil return, springboard starts steady rise; When springboard declines, power oil need not fuel feeding, rely on the deadweight of 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 lifting and the springboard stop motion at an arbitrary position of bridge of boats springboard.

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of Pilot operated check valve of the present invention.

7. times hydraulic fluid ports of hydraulic fluid port, 8. valve seat 9. spool 10. slide bar 10-1. slide blocks 10-2. push rod 11. fixed base 12. inner cavity 13. springs on 1. selector valve 2. oil cylinder 3. stop valve 4. Pilot operated check valve 5. valve bodies 6. in figure

Embodiment

By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.

A kind of bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used as shown in Figure 1 and Figure 2, comprise be communicated with hydraulic power supply selector valve 1, be located at the stop valve 3 between oil cylinder 2 inlet and outlet of fuel channel, oil circuit between selector valve 1 and stop valve 3 is provided with Pilot operated check valve 4, by the adjusting of Pilot operated check valve 4, realize the steady upset of springboard and the smooth running of oil cylinder 2 in passive delivery situation.

Described Pilot operated check valve 4 has valve body 5, on valve body 5, offer and connect two upper hydraulic fluid ports 6 of selector valve 1, two lower hydraulic fluid ports 7 of connection oil cylinder 2, wherein the lower hydraulic fluid port 7 on the left side is communicated with the rod chamber of oil cylinder 2, the lower hydraulic fluid port 7 on the right is communicated with 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 intermediate portion aperture is minimum, from inside to outside becomes successively large to two ends, is provided with the mangetic core assembly of oil circuit control break-make in described inner chamber.

Specifically, described mangetic core assembly comprises a pair of valve seat 8 that is arranged on valve body 5 inner chamber intermediate portion both sides apart, the outermost end of valve body 5 inner chambers seals respectively and is fixed with fixed base 11, fixed base 11 is pressed on valve body 5 inner chamber intermediate portion bi-side by valve seat 8, in described valve seat 8, be provided with the spool 9 of oil circuit control break-make, between valve seat 8 and fixed base 11, have that accommodating spool 9 moves and with upper hydraulic fluid port 6, the inner cavity 12 that lower hydraulic fluid port 7 communicates, spool 9 the inners have cone segments, valve seat 8 the inners have the cone shape hole matching with spool 9 cone segments, spool 9 rear ends have cavity, fixed base 11 has cavity equally towards spool 9 rear end side, in the above-mentioned cavity communicating, be provided with top and be pressed in the spring 13 on spool 9 cavity internal faces, while acting on without hydraulic oil by spring 13, realize the Rapid reset of spool 9.

In valve body 5 inner chamber intermediate portions between described spool 9, be provided with slide bar 10, described slide bar 10 comprises the slide blocks 10-1 being slidably matched with valve body 5 internal chamber walls, divide the push rod 10-2 that is located at slide blocks 10-1 both sides and slide blocks 10-1 integrative-structure, slide blocks 10-1 bi-side are subject to hydraulic oil effect and slide bar 10 are moved, described push rod 10-2 pushes up respectively and is pressed in corresponding spool 9 interior edge faces, by slide bar 10, moved by oil pressure effect, push rod 10-2 promotes spool 9 cone segments disengagings and backs down spool 9 with valve seat 8 contacting of cone shape hole, or contacted with the cone shape hole of valve seat 8 compression by the spring 13 effect cone segments of spool 9 and close spool 9, distance between described push rod 10-2 outer end is than the large 2mm of distance between described spool 9 interior edge faces, after once stop valve 3 is opened like this, two spools 9 connections and two spools 9 are in open mode, at this moment bridge of boats springboard is in complete free state, when bridge of boats springboard is fallen selected position, closing stop valve 3 bridge of boats springboards is retractable.

The bridge of boats springboard of take is below regained as example course of action of the present utility model is described:

Adjustable change valve 1 position left, make the upper hydraulic fluid port 6 on the left side start fuel feeding, when hydraulic oil flows to the valve body 5 inner chamber position of Pilot operated check 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 and moves right, slide bar 10 promote the right spools 9 depart from valve seat 8 between contact cooperation, 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, shifting piston onto moves 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 to regain stably.

When moving to springboard, oil cylinder 2 inner carriers can rely on self-acting power when motion, adjustable change valve 1 is to neutral position, make all fuel feeding not of two upper hydraulic fluid ports 6, stop valve 3 is closed simultaneously, oil cylinder 2 pistons continue to move to rodless cavity under the effect of springboard deadweight, now the spool 9 on Pilot operated check valve 4 the right is moved to the left under spring 13 effects, slide bar 10 spool 9 is on the right moved to the left under promoting simultaneously, the push rod 10-2 on slide bar 10 left sides backs down left side spool 9, due to the hydraulic oil in oil cylinder 2 rodless cavities under the effect of piston in compressive state, hydraulic oil in rodless cavity enters in the spool 9 of the right, spool 9 cone segments that promote the right are pressed on the cone shape hole 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 cavities and rod chamber is connected, a hydraulic oil part in Pilot operated check valve 4 the right valve seats 8 is discharged through the spool 9 on the left side, another part flows to the rod chamber of oil cylinder 2, continuing to promote piston moves to rodless cavity direction, now, bridge of boats springboard starts to decline reposefully under the state of deadweight, when bridge of boats springboard approaches the about 30mm in 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, before having avoided, by throttle valve, control impact and the unstability of bringing when springboard is regained.

When springboard stretches out, adjustable change valve 1 position is to the right, i.e. upper hydraulic fluid port 6 oil-feeds on the right, course of action and in like manner above-mentioned.

The utility model has improved original Pilot operated check valve 4 structures, has lengthened the length of slide bar 10, makes slide bar 10 length be a bit larger tham two distances between spool 9 interior edge faces, can make 9 one of two spools of Pilot operated check valve 4 open during work, and another is closed.When needs springboard rises, power oil fuel feeding, due to slide bar 10 effects, two spools 9 of Pilot operated check valve 4 are opened completely, thereby realize oil cylinder 2 one end fuel feeding, one end oil return, springboard starts steady rise; When springboard declines, power oil need not fuel feeding, rely on the deadweight of springboard, 9 one of two spools of Pilot operated check valve 4 are opened, another is closed, thereby realized the backflow of oil cylinder 2 interior hydraulic oil and supplemented, having guaranteed the smooth running of oil cylinder 2 under passive delivery situation, having guaranteed steady lifting and the springboard stop motion at an arbitrary position of bridge of boats springboard.

Above-mentioned mode of execution is only explanation technical conceive of the present utility model and feature; its object is to allow person skilled in the art can understand content of the present utility model and be implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.

Claims

1. a bridge of boats springboard hydraulic pressure turn-over device hydraulic valve bank used, comprise the selector valve (1) that is communicated with hydraulic power supply, be located at the stop valve (3) between oil cylinder (2) inlet and outlet of fuel channel, oil circuit between selector valve (1) and stop valve (3) is provided with Pilot operated check valve (4), it is characterized in that: described Pilot operated check valve (4) has valve body (5), on valve body (5), offer two upper hydraulic fluid ports (6) connecting selector valve (1), connect two lower hydraulic fluid ports (7) of oil cylinder (2), valve body (5) inner chamber being positioned between hydraulic fluid port (6) and lower hydraulic fluid port (7) is provided with mangetic core assembly, described mangetic core assembly comprises the valve seat (8) of pair of opposing, in described valve seat (8), be provided with the spool (9) of oil circuit control break-make, being positioned at valve body (5) inner chamber between described spool (9) is provided with movable top and opens or closes the slide bar (10) that closes spool (9), large 1.5～the 3mm of distance described in Length Ratio between slide bar (10) two ends between spool (9) interior edge face.

2. bridge of boats springboard hydraulic pressure turn-over device according to claim 1 hydraulic valve bank used, it is characterized in that: described mangetic core assembly comprises that sealing is fixed on the fixed base (11) that valve body (5) inner chamber two ends compress valve seat (8) respectively, between valve seat (8) and fixed base (11), there is the inner cavity (12) that accommodating spool (9) is mobile and communicate with upper hydraulic fluid port (6), lower hydraulic fluid port (7), spool (9) the inner has cone segments, valve seat (8) the inner has the cone shape hole matching with spool (9) cone segments

3. bridge of boats springboard hydraulic pressure turn-over device according to claim 2 hydraulic valve bank used, is characterized in that: between described spool (9) and fixed base (11), be provided with top and be pressed in the spring (13) that on spool (9), spool (9) is resetted.

4. bridge of boats springboard hydraulic pressure turn-over device according to claim 2 hydraulic valve bank used, it is characterized in that: described slide bar (10) comprises the slide blocks (10-1) that is slidably matched with valve body (5) internal chamber wall, minute is located at the push rod (10-2) of slide blocks (10-1) both sides and slide blocks (10-1) integrative-structure, and described push rod (10-2) pushes up respectively and is pressed in corresponding spool (9) interior edge face.

5. bridge of boats springboard hydraulic pressure turn-over device according to claim 4 hydraulic valve bank used, is characterized in that: the distance between described push rod (10-2) outer end is than the large 2mm of distance between described spool (9) interior edge face.