CN202811583U - Bidirectional hydraulic lock without internal drainage - Google Patents
Bidirectional hydraulic lock without internal drainage Download PDFInfo
- Publication number
- CN202811583U CN202811583U CN 201220458734 CN201220458734U CN202811583U CN 202811583 U CN202811583 U CN 202811583U CN 201220458734 CN201220458734 CN 201220458734 CN 201220458734 U CN201220458734 U CN 201220458734U CN 202811583 U CN202811583 U CN 202811583U
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- CN
- China
- Prior art keywords
- seal ring
- bidirectional hydraulic
- hydraulic lock
- boss
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a bidirectional hydraulic lock without internal drainage. The bidirectional hydraulic lock comprises a valve body and a control sliding valve which is arranged in an inner lock cavity of the valve body, wherein the two ends of the control sliding valve are symmetrically provided with a one-way valve and a screwed plug respectively; the control sliding valve is divided into two from the middle to form symmetric left valve core and right valve core; end faces of the left valve core and the right valve core are provided with symmetric bosses respectively; or only the end face of the left valve core or the right valve core is provided with a boss; and a seal ring is sleeved on the boss. The bidirectional hydraulic lock has the advantages of completely no internal drainage, long service life, convenience in machining, convenience in maintenance and low maintenance cost.
Description
Technical field
The utility model relates to the modular construction in a kind of hydraulic system, is specifically related to let out bidirectional hydraulic lock in a kind of nothing of controlling the oil cylinder rising or descending.
Background technique
The working principle of bidirectional hydraulic lock is: fluid enters the lock chamber from a filler opening, and pressure promotes to open the one-way valve of oil back chamber to middle control guiding valve to another side, and this moment, fluid was opened the one-way valve of oil suction chamber, thus rising or the decline of control oil cylinder.The control guiding valve of the lock body of employed bidirectional hydraulic lock and centre mostly is hole axle cooperating structure on the market at present, hydraulic lock is quick on the draw, just requiring lock body and control guiding valve is Spielpassung, will produce so in various degree in let out, namely the fluid of filler opening can flow into oil back chamber from the gap that the hole axle cooperates under pressure, and the hydraulic system effect is reduced.Hydraulic lock because of control guiding valve and lock body friction, causes the gap increasing in use for some time, in let out also can be more and more serious, the pressure loss also can be increasing, finally be directed at working pressure deficiency system in, even system can't work.So simple hole axle cooperating structure open oil inlet and outlet must have in various degree in let out, and machining accuracy is difficult grasps.
Summary of the invention
The technical problems to be solved in the utility model provides in a kind of nothing and lets out bidirectional hydraulic lock, fully without in let out, long service life is convenient to processing, and easy to maintenance and maintenance cost is low.
The utility model is achieved through the following technical solutions:
Let out bidirectional hydraulic lock in the nothing, comprise valve body and be located at control guiding valve in the valve body internal lock cavity, control guiding valve two ends are symmetrically arranged with respectively one-way valve, plug, described control guiding valve is divided into two from the centre, form symmetrical left spool, right spool, be respectively equipped with symmetrical boss on the end face between left spool and the right spool, perhaps only at the end face of left spool or right spool boss be set, be set with seal ring on the described boss.
The utility model further improvement project is that described boss total height is than the little 0.1-0.3mm of seal ring width.
The utility model further improvement project is that described seal ring is oil-resistant seal ring.
The utility model further improvement project is that described internal diameter of the seal ring is than the little 0-0.2mm of boss external diameter, perhaps large 0-0.5mm.
The utility model further improvement project is that described seal ring external diameter is less than lock chamber internal diameter 0-0.5mm.
The utility model further improvement project is that described control guiding valve external diameter is less than lock chamber internal diameter 0-1.0mm.
The utility model compared with prior art has following obvious advantage:
The utility model is owing to be divided into two original control guiding valve, be designed to symmetrical two spools, be respectively equipped with boss on the end face between two spools, set up an oil-resistant seal ring at two boss, because hydraulic lock is not worked or fueling cavity when not opening fully, seal ring is not under pressure and acts on or be subject to very little pressure-acting, so that seal ring and lockhole do not have frictional force, when opening fully, seal ring remains static, swell increment 0.1-0.5mm, only seal this moment, so the seal ring long service life, hole axle matching gap also can suitably be amplified, to reduce hole axle friction, greatly prolong control guiding valve working life.
Description of drawings
Fig. 1 is the utility model sectional view.
Embodiment
As shown in Figure 1, the utility model comprises valve body 1 and is located at control guiding valve 3 in the valve body internal lock cavity 2, control guiding valve 3 two ends are symmetrically arranged with respectively one-way valve 4, plug 5, described control guiding valve 3 is divided into two from the centre, form symmetrical left spool 31, right spool 32, be respectively equipped with on the end face between left spool 31 and the right spool 32 symmetrical boss 33,33 ', boss 33,33 ' on be set with oil-resistant seal ring 34.
Described boss 33,33 ' total height than the little 0.15mm of seal ring 34 width.
Described seal ring 34 internal diameters are than boss 33, the little 0-0.2mm of 33 ' external diameter, and perhaps large 0-0.5mm is with the compression surplus as seal ring 34.
Described seal ring 34 external diameters make it be in free state in lock chamber 2 less than lock chamber 2 internal diameter 0.1mm.
Described control guiding valve 3 external diameters are less than lock chamber 2 internal diameter 0.1mm, to guarantee that control guiding valve 3 is in lock chamber 2 interior flexible motion.
During work, left spool 31 to the right spool 32 slides, and the hydraulic oil around the spool is to the low pressure diffluence.Left spool 31 is run into first the seal ring 34 of free state, seal ring 34 is pushed up spool 32 to the right, after left spool 31, right spool 32 are merged together, under the effect of oil liquid pressure, open the one-way valve 4 of oil back chamber, left spool 31, right spool 32 are middle seal ring 34 jam-packeds simultaneously, micro-fluid between left spool 31, right spool 32 and the seal ring 34 closely cooperates with the lock wall, to reach the order ground of letting out in the nothing to expanding all around.
Above embodiment only is the preferred embodiment of this creation, not in order to limiting this creation, all in this creation spirit and principle within make any modification, be equal to replacement, improvement etc., all should be included within the protection domain of this creation.
Claims (6)
- Without in let out bidirectional hydraulic lock, comprise valve body (1) and be located at control guiding valve (3) in the valve body internal lock cavity (2), control guiding valve (3) two ends are symmetrically arranged with respectively one-way valve (4), plug (5), it is characterized in that: described control guiding valve (3) is divided into two from the centre, form symmetrical left spool (31), right spool (32), be respectively equipped with symmetrical boss (33 on the end face between left spool (31) and the right spool (32), 33 '), perhaps only boss (33) is set, described boss (33 at the end face of left spool (31) or right spool (32), 33 ') upper suit seal ring (34).
- 2. let out bidirectional hydraulic lock in the nothing according to claim 1, it is characterized in that: described boss (33,33 ') total height is than the little 0.1-0.3mm of seal ring (34) width.
- 3. let out bidirectional hydraulic lock in the nothing according to claim 1, it is characterized in that: described seal ring (34) is oil-resistant seal ring.
- 4. let out bidirectional hydraulic lock in the nothing according to claim 1, it is characterized in that: described seal ring (34) internal diameter is than the little 0-0.2mm of boss (33,33 ') external diameter, perhaps large 0-0.5mm.
- 5. let out bidirectional hydraulic lock in the nothing according to claim 1, it is characterized in that: described seal ring (34) external diameter is less than lock chamber (2) internal diameter 0-0.5mm.
- 6. let out bidirectional hydraulic lock in the nothing according to claim 1, it is characterized in that: described control guiding valve (3) external diameter is less than lock chamber (2) internal diameter 0-1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458734 CN202811583U (en) | 2012-09-11 | 2012-09-11 | Bidirectional hydraulic lock without internal drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458734 CN202811583U (en) | 2012-09-11 | 2012-09-11 | Bidirectional hydraulic lock without internal drainage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811583U true CN202811583U (en) | 2013-03-20 |
Family
ID=47870465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220458734 Expired - Fee Related CN202811583U (en) | 2012-09-11 | 2012-09-11 | Bidirectional hydraulic lock without internal drainage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811583U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174693A (en) * | 2013-04-07 | 2013-06-26 | 华菱星马汽车（集团）股份有限公司 | Flow regeneration hydraulic lock valve device |
| CN105673597A (en) * | 2016-04-18 | 2016-06-15 | 湖南五新隧道智能装备股份有限公司 | Hydraulic leveling-locking device and tunnel arch-frame operating vehicle |
-
2012
- 2012-09-11 CN CN 201220458734 patent/CN202811583U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174693A (en) * | 2013-04-07 | 2013-06-26 | 华菱星马汽车（集团）股份有限公司 | Flow regeneration hydraulic lock valve device |
| CN103174693B (en) * | 2013-04-07 | 2015-05-27 | 华菱星马汽车（集团）股份有限公司 | Flow regeneration hydraulic lock valve device |
| CN105673597A (en) * | 2016-04-18 | 2016-06-15 | 湖南五新隧道智能装备股份有限公司 | Hydraulic leveling-locking device and tunnel arch-frame operating vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20200911 |