CN202510459U - Hydraulic lock, oil cylinder system and engineering machinery - Google Patents
Hydraulic lock, oil cylinder system and engineering machinery Download PDFInfo
- Publication number
- CN202510459U CN202510459U CN2012201329614U CN201220132961U CN202510459U CN 202510459 U CN202510459 U CN 202510459U CN 2012201329614 U CN2012201329614 U CN 2012201329614U CN 201220132961 U CN201220132961 U CN 201220132961U CN 202510459 U CN202510459 U CN 202510459U
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- valve
- hydraulic lock
- mouthful
- port
- way valve
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Abstract
The utility model provides a hydraulic lock, an oil cylinder system and engineering machinery. The hydraulic lock comprises a first port, a second port, a third port, a fourth port, a first one-way valve and a second one-way valve; the first port is connected with the third port through the first one-way valve; a control port of the first one-way valve is connected with the second port; the second port is connected with the fourth port through the second one-way valve; a control port of the second one-way valve is connected with the first port; the hydraulic lock further comprises an unlocking valve and an oil return port, wherein the third port and the fourth port are connected or disconnected through the unlocking valve; and the oil return port is connected with the third port or the fourth port. During hydraulic fault, an unlocking function can be achieved by the unlocking valve; and the hydraulic lock, the oil cylinder system and the engineering machinery have the characteristics of simple principle, easy implementation and low cost.
Description
Technical field
The utility model relates to Hydraulic Field, more specifically, relates to a kind of hydraulic lock, cylinder system and engineering machinery.
Background technique
Hydraulic lock of the prior art needing to be usually used on the vertical leg oil cylinder of engineering machinery, hydraulic lock being installed in the engineering machinery of supporting leg operation, can avoid the problem of supporting leg because of the gravity retraction.
Fig. 1 shows the hydraulic schematic diagram of hydraulic lock of the prior art and oil cylinder.As shown in Figure 1, hydraulic lock 100 of the prior art comprises: first mouthful 110, second mouthfuls 120, the 3rd mouthfuls 130 and four-hole 140.Hydraulic lock 100 also comprises first one-way valve 150 and second one-way valve 160.Wherein, first mouthful 110 is connected with the 3rd mouthful 130 through first one-way valve 150, and the control mouth 151 of first one-way valve 150 is connected with second mouthful 120.Pass through second one-way valve 160 for second mouthful 120 and be connected with four-hole 140, the control mouth 161 of second one-way valve 160 is connected with first mouthful 110.When being filler opening for first mouthful 110, pressure oil gets in the rodless cavity 210 of oil cylinder 200 through first one-way valve 150 by first mouthful 110.Simultaneously, the control mouth of second one-way valve 160 is opened second one-way valve 160 under the effect of pressure oil, and like this, the hydraulic oil in the rod chamber 220 of oil cylinder 200 just can be through second one-way valve 160 by second mouthful of 120 oil return, and vice versa.
Yet, in the course of the work, when the supporting leg hydraulic part breaks down, because the locking effect of hydraulic lock, so release and the recovery easily of vertical leg oil cylinder, and only after fault is got rid of, just reclaim supporting leg.Like this, when working in the open air, owing to lack instrument and supplementary equipment, fault is difficult to get rid of easily, so engineering machinery just can not in time be returned the maintenace point place under repair.
The model utility content
The utility model aims to provide a kind of hydraulic lock, cylinder system and engineering machinery, when in the existing technology hydraulic fault taking place to solve, by the hydraulic mechanism of the locking problem of release easily.
For solving the problems of the technologies described above, first aspect according to the utility model provides a kind of hydraulic lock, comprising: first mouthful, second mouthful, the 3rd mouthful, four-hole, first one-way valve and second one-way valve; First mouthful is passed through first one-way valve and is connected with the 3rd mouthful; The control mouth of first one-way valve is connected with second mouthful; Second mouthful is passed through second one-way valve and is connected with four-hole; The control mouth of second one-way valve is connected with first mouthful; Hydraulic lock also comprises: separate locking-valve, the conducting or end through separating locking-valve of the 3rd mouthful and four-hole; Return opening, return opening is connected with the 3rd mouthful or four-hole.
Further, separating locking-valve is the 2/2-way valve.
Further, separating locking-valve is manually operated valve or electrically-controlled valve.
Second aspect according to the utility model provides a kind of cylinder system, comprises oil cylinder and hydraulic lock, and this hydraulic lock is above-mentioned hydraulic lock; The 3rd mouthful of hydraulic lock is connected with the rodless cavity of oil cylinder, and the four-hole of hydraulic lock is connected with the rod chamber of oil cylinder; Cylinder system also comprises the oil return control valve of the oil return of the return opening that is used to control hydraulic lock.
Further, the oil return control valve is a stop valve.
The 3rd aspect according to the utility model provides a kind of engineering machinery, comprises supporting leg and the cylinder system that is used to drive supporting leg, and this cylinder system is above-mentioned cylinder system.
Further, the oil cylinder of cylinder system is vertically to be provided with.
When hydraulic fault took place, the utility model can be separated the function that locking-valve is realized release through it, have principle simple, be easy to realize, characteristics that cost is low.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 has schematically shown the hydraulic schematic diagram of hydraulic lock of the prior art and oil cylinder;
Fig. 2 has schematically shown hydraulic lock and the hydraulic schematic diagram of oil cylinder in the utility model; And
Fig. 3 has schematically shown the hydraulic schematic diagram of the cylinder system in the utility model.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
The first aspect of the utility model provides a kind of hydraulic lock.As shown in Figure 2, this hydraulic lock 100 comprises: first mouthful 110, second mouthfuls 120, the 3rd mouthfuls 130, four-hole 140, first one-way valve 150 and second one-way valve 160.Passing through first one-way valve 150 for first mouthful 110 is connected with the 3rd mouthful 130; The control mouth 151 of first one-way valve 150 is connected with second mouthful 120.Passing through second one-way valve 160 for second mouthful 120 is connected with four-hole 140; The control mouth 161 of second one-way valve 160 is connected with first mouthful 110.Hydraulic lock in the utility model also comprises: separate locking-valve 180 and return opening 170, wherein, the conducting or end of the 3rd mouthful 130 and four-hole 140 through separating locking-valve 180; Return opening 170 is connected with the 3rd mouthful 130 or four-hole 140.
Preferably, separate locking-valve 180 and be the 2/2-way valve.Among Fig. 2, the left station of separating locking-valve 180, is separated locking-valve 180 and is in by station during proper functioning for by station.The right working position of separating locking-valve 180 is the conducting station, when breaking down, separates locking-valve 180 and is in the conducting station.Preferably, separating locking-valve 180 is manually operated valve or electrically-controlled valve.Especially, separate locking-valve 180 by cam button or knob controlling.
Please refer to Fig. 1, during proper functioning, separate locking-valve 180 and be in left station, the hydraulic lock in the utility model can the same function that realizes bidirectional locking with common hydraulic lock at this moment.When breaking down, separate locking-valve 180 and be placed in right working position, at this moment, the 3rd mouthful 130 is communicated with through separating locking-valve 180 with four-hole 140.Like this, the hydraulic oil in the rodless cavity 210 of oil cylinder 200 in (for example under the effect of engineering machinery deadweight) under the effect of external force through separating the rod chamber 220 that locking-valve 180 flows to oil cylinder 200.Because the volume of rodless cavity 210 is greater than the volume of rod chamber 220, therefore, unnecessary hydraulic oil is flow back to fuel tank through return opening 170.So, just can under the situation that hydraulic system breaks down, make oil cylinder 200 releases.
Please refer to Fig. 3, the second aspect of the utility model provides a kind of cylinder system, comprises oil cylinder 200 and hydraulic lock 100, and hydraulic lock 100 is the hydraulic lock among above-mentioned each embodiment.The 3rd mouthful 130 of hydraulic lock 100 is connected with the rodless cavity 210 of oil cylinder 200, and the four-hole 140 of hydraulic lock 100 is connected with the rod chamber 220 of support oil cylinder 200.Cylinder system also comprises the oil return control valve 300 of the oil return of the return opening 170 that is used to control hydraulic lock.Preferably, oil return control valve 300 is stop valves.
When proper functioning, to separate locking-valve 180 and be in left station, oil return control valve 300 is in cut-off state, flows into fuel tank 400 to prevent hydraulic oil by oil return control valve 300.When hydraulic fault takes place, will separate locking-valve 180 and place right working position, and oil return control valve 300 will be placed the state of conducting.So oil cylinder 200 is under the effect of external force, its rodless cavity 210 interior hydraulic oil processes are separated locking-valve 180 and are got into rod chamber 220, or arrive fuel tank 400 through return opening 170 and 300 oil returns of oil return control valve.So the piston rod of oil cylinder 200 shrinks.
The third aspect of the utility model provides a kind of engineering machinery, comprises supporting leg and the cylinder system that is used to drive supporting leg, and cylinder system is the cylinder system among above-mentioned each embodiment.Preferably, the oil cylinder of cylinder system is vertically to be provided with.
Because the support oil cylinder of engineering machinery has used the hydraulic lock in the utility model; Therefore; When hydraulic system breaks down, need not use other instrument and supplementary equipment, only need operation to separate locking-valve 180 and oil return control valve 300; Just can support oil cylinder be regained by means of the self gravitation of engineering machinery.So engineering machinery just can in time be returned the maintenace point place under repair.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. a hydraulic lock comprises: first mouthful (110), second mouthful (120), the 3rd mouthful (130), four-hole (140), first one-way valve (150) and second one-way valve (160); Said first mouthful (110) are connected with said the 3rd mouthful (130) through said first one-way valve (150); The control mouth (151) of said first one-way valve (150) is connected with said second mouthful (120); Said second mouthful (120) are connected with said four-hole (140) through said second one-way valve (160); The control mouth (161) of said second one-way valve (160) is connected with said first mouthful (110);
It is characterized in that said hydraulic lock also comprises:
Separate locking-valve (180), said the 3rd mouthful (130) and said four-hole (140) are separated locking-valve (180) and conducting or end through said;
Return opening (170), said return opening (170) is connected with said the 3rd mouthful (130) or said four-hole (140).
2. hydraulic lock according to claim 1 is characterized in that, the said locking-valve (180) of separating is the 2/2-way valve.
3. hydraulic lock according to claim 1 and 2 is characterized in that, the said locking-valve (180) of separating is manually operated valve or electrically-controlled valve.
4. a cylinder system comprises oil cylinder (200) and hydraulic lock (100), it is characterized in that, said hydraulic lock (100) is each described hydraulic lock among the claim 1-3;
The 3rd mouthful (130) of said hydraulic lock (100) are connected with the rodless cavity (210) of said oil cylinder (200), and the four-hole (140) of said hydraulic lock (100) is connected with the rod chamber (220) of said oil cylinder (200);
Said cylinder system also comprises the oil return control valve (300) of the oil return of the return opening (170) that is used to control said hydraulic lock.
5. cylinder system according to claim 4 is characterized in that, said oil return control valve (300) is a stop valve.
6. an engineering machinery comprises supporting leg and the cylinder system that is used to drive said supporting leg, it is characterized in that said cylinder system is claim 4 or 5 described cylinder systems.
7. engineering machinery according to claim 6 is characterized in that, the oil cylinder of said cylinder system is vertically to be provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201329614U CN202510459U (en) | 2012-03-31 | 2012-03-31 | Hydraulic lock, oil cylinder system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201329614U CN202510459U (en) | 2012-03-31 | 2012-03-31 | Hydraulic lock, oil cylinder system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510459U true CN202510459U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201329614U Expired - Fee Related CN202510459U (en) | 2012-03-31 | 2012-03-31 | Hydraulic lock, oil cylinder system and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510459U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979782A (en) * | 2012-11-07 | 2013-03-20 | 中国航空工业集团公司沈阳发动机设计研究所 | Limiting device for synchronous limit of actuating cylinders |
| CN103697315A (en) * | 2013-12-12 | 2014-04-02 | 广西壮族自治区特种设备监督检验院 | Shoulder safety press lever locking mechanism for recreation facility |
| CN103758804A (en) * | 2013-10-18 | 2014-04-30 | 三一汽车制造有限公司 | Hydraulic lock opening system under high back pressure, and opening method and hydraulic system |
| CN108019392A (en) * | 2018-01-27 | 2018-05-11 | 宁波市博尔法液压有限公司 | A kind of hydraulic lock |
-
2012
- 2012-03-31 CN CN2012201329614U patent/CN202510459U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979782A (en) * | 2012-11-07 | 2013-03-20 | 中国航空工业集团公司沈阳发动机设计研究所 | Limiting device for synchronous limit of actuating cylinders |
| CN102979782B (en) * | 2012-11-07 | 2015-05-20 | 中国航空工业集团公司沈阳发动机设计研究所 | Limiting device for synchronous limit of actuating cylinders |
| CN103758804A (en) * | 2013-10-18 | 2014-04-30 | 三一汽车制造有限公司 | Hydraulic lock opening system under high back pressure, and opening method and hydraulic system |
| CN103758804B (en) * | 2013-10-18 | 2016-05-25 | 三一汽车制造有限公司 | Hydraulic lock open system and open method and hydraulic system under a kind of high back pressure |
| CN103697315A (en) * | 2013-12-12 | 2014-04-02 | 广西壮族自治区特种设备监督检验院 | Shoulder safety press lever locking mechanism for recreation facility |
| CN108019392A (en) * | 2018-01-27 | 2018-05-11 | 宁波市博尔法液压有限公司 | A kind of hydraulic lock |
| CN108019392B (en) * | 2018-01-27 | 2024-04-23 | 宁波市博尔法液压有限公司 | Hydraulic lock |
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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 |
Granted publication date: 20121031 Termination date: 20160331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |