CN201043542Y - Hydraulic combined valve - Google Patents
Hydraulic combined valve Download PDFInfo
- Publication number
- CN201043542Y CN201043542Y CN 200720069265 CN200720069265U CN201043542Y CN 201043542 Y CN201043542 Y CN 201043542Y CN 200720069265 CN200720069265 CN 200720069265 CN 200720069265 U CN200720069265 U CN 200720069265U CN 201043542 Y CN201043542 Y CN 201043542Y
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- valve
- safety valve
- unit
- hydraulic
- valve plug
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- Expired - Fee Related
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Abstract
The utility model relates to a combined hydraulic valve. A safety valve plug-in is arranged on the valve body of a double hydraulic control check valve, the valve core of the double hydraulic control check valve is arranged on the upper part of the valve body, the safety valve plug-in is arranged on the lower part of the valve body, the forward oil inlet of the double hydraulic control check valve is positioned on the upper side, the oil outlet of the double hydraulic control check valve is connected in parallel with the oil inlet of the safety valve plug-in and communicated with a hydraulic cylinder via an externally connected oil pipe, and the oil outlet of the safety valve plug-in is communicated with an oil tank via an externally connected oil pipe. The utility model resolves the defect that hydraulic elements in a hydraulic system are dispersely mounted, and combines valves of two functions together, as a result, the structure of the hydraulic system is compact, and installation and maintenance are also convenient.
Description
Technical field
The utility model relates to the hydrovalve technical field, concrete relates to a kind of function combinations hydraulic pressure combination brake switch and proporting together with safety valve and double hydraulic control one-way valve.
Background technique
In hydraulic system, often oil hydraulic cylinder two ends oil circuit pressure is had certain requirement, can damage the element in the hydraulic system if surpass certain pressure, even the hydraulic pressure accident takes place.
The double hydraulic control one-way valve also is that the oil circuit at oil hydraulic cylinder two ends is controlled, to reach the requirement of locking.
Existing hydraulic system is to the overload protection and the locking requirement of oil hydraulic cylinder two ends oil circuit, the way that safety valve and double hydraulic control one-way valve are installed in general employing respectively.This method needs two valve members, and complex structure has also increased cost accordingly, makes simultaneously that hydraulic system structure is huge and disperses the installation and maintenance difficulty.
The model utility content
Technical problem to be solved in the utility model is, a kind of function combinations hydraulic pressure combination brake switch and proporting together with safety valve and double hydraulic control one-way valve.
In order to address the above problem, the technical solution of the utility model is such:
A kind of hydraulic pressure combination brake switch and proporting, it is characterized in that, the safety valve plug-in unit is set on the valve body of double hydraulic control one-way valve, the spool of described double hydraulic control one-way valve is arranged on valve body top, the safety valve plug-in unit is arranged on valve body lower portion, the forward filler opening of double hydraulic control one-way valve in the above, the filler opening of the oil outlet of double hydraulic control one-way valve and safety valve plug-in unit is in parallel and leads to oil hydraulic cylinder through external oil pipe, the oil outlet of safety valve plug-in unit leads to fuel tank by external oil pipe.
The spool of described double hydraulic control one-way valve is symmetrical two, and the centre has piston, and the piston two ends are valve pocket, the poppet valve core that has steel ball and promotion steel ball in the valve pocket, the poppet valve core outside connects spring, and spring is fixedly installed on the spring seat, and blind nut is stamped in the spring seat outside.
Described safety valve plug-in unit is symmetrical two, and each safety valve plug-in unit is by the valve body that is threaded, and safety valve plug-in unit inside has the locking nut of a pressure adjusting screw and locking screw.
Described safety valve plug-in unit can also be one, and the safety valve plug-in unit is by the valve body that is threaded, and safety valve plug-in unit inside has the locking nut of a pressure adjusting screw and locking screw.
Described valve body is step-like.
Beneficial effect, the utility model have overcome the shortcoming that the hydraulic element installation disperses in the hydraulic system, and the valve of two kinds of functions is combined, and make the hydraulic system structure compactness, and installation and maintenance are also convenient.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the structural representation of the utility model hydraulic pressure combination brake switch and proporting.
Fig. 2 is the plan structure schematic representation of the utility model hydraulic pressure combination brake switch and proporting.
Fig. 3 is the schematic diagram of the function of the utility model hydraulic pressure combination brake switch and proporting.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, Fig. 2 and Fig. 3, safety valve plug-in unit 1 is by being threaded in the valve body 2, and filler opening communicates with the outlet of double hydraulic control one-way valve.The pressure of safety valve is regulated by pressure adjusting screw 1.1, sets up to needs pressure and inwardly passes through and tight locking nut 1.2 lock pressures.If oil hydraulic cylinder surpasses the working pressure that hydraulic system is set up because of there is impact load pressure moment the outside; then after overload pressure reaches minimum setting pressure of relief valve, open the safety-valve, fluid discharges from the safety valve outlet; pressure no longer rises, thus protection oil hydraulic cylinder and hydraulic pipe line is unlikely breaks.
As required, the safety valve plug-in unit can be with two, also can be with one.As with one, then can be contained in the left side or the right as required, at this moment,, there are not T1 or T2 mouth one side do not adorn the not process safety valve mounting hole of safety valve, have only A2 mouth or B2 mouth.
One main valve hole is arranged at valve body top, the centre piston 9 of packing into; With spring seat 4, spring 5, steel ball 7 poppet valve core 6 of packing into, install to together again in the valve pocket 8, the back is blocked with blind nut 3, installs seal ring on the valve pocket 8, and integral body installs in the valve body again.
When hydraulic oil enters from A1, forward is pushed left side poppet valve core 6 open, and fluid enters A2, communicates with the safety valve filler opening simultaneously, and the maximum pressure that enters the oil of A2 is subjected to the restriction of minimum setting pressure of relief valve.The hydraulic oil of A2 mouth arrives oil hydraulic cylinder through external oil pipe, promotes the hydraulic cylinder piston action.The hydraulic oil that comes out from the oil hydraulic cylinder back cavity, arrive the B2 mouth through external oil pipe, rear portion to the right poppet valve core 6, the pressure that produces is poppet valve core will be closed, but piston 9 is turned right to push away backed down the right poppet valve core 6 owing to the hydraulic oil of left side A1 mouth, make the hydraulic oil of hydraulic fluid port B2 can lead to hydraulic fluid port B1.Steel ball 7 plays pre-off-load effect, before piston 9 is pushed poppet valve core 6 open, pushes steel ball 7 earlier open, allow the B2 mouth unlikely the plunging of pressure and cause impact.
When hydraulic oil enters from B1, the working procedure principle is the same.
If hydraulic system breaks down, cause A1 or B1 mouth not to have hydraulic oil and enter, at this moment the hydraulic coupling that produces by load or deadweight, left and right conical spool 6 oppositely can be closed, cut off the path of A2 to A1 or B2 to B1, it is motionless to make oil hydraulic cylinder stop at the origin-location, avoids taking place security incident.
Compared with prior art, the utility model has overcome the shortcoming that the hydraulic element installation disperses in the hydraulic system, and the valve of two kinds of functions is combined, and makes the hydraulic system structure compactness, and installation and maintenance are also convenient.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. hydraulic pressure combination brake switch and proporting, it is characterized in that, the safety valve plug-in unit is set on the valve body of double hydraulic control one-way valve, the spool of described double hydraulic control one-way valve is arranged on valve body top, the safety valve plug-in unit is arranged on valve body lower portion, the forward filler opening of double hydraulic control one-way valve in the above, the filler opening of the oil outlet of double hydraulic control one-way valve and safety valve plug-in unit is in parallel and leads to oil hydraulic cylinder through external oil pipe, the oil outlet of safety valve plug-in unit leads to fuel tank by external oil pipe.
2. a kind of hydraulic pressure combination brake switch and proporting according to claim 1, it is characterized in that, the spool of described double hydraulic control one-way valve is symmetrical two, the centre has piston, the piston two ends are valve pocket, have the poppet valve core of steel ball and promotion steel ball in the valve pocket, and the poppet valve core outside connects spring, spring is fixedly installed on the spring seat, and blind nut is stamped in the spring seat outside.
3. a kind of hydraulic pressure combination brake switch and proporting according to claim 1, it is characterized in that, described safety valve plug-in unit is symmetrical two, and each safety valve plug-in unit is by the valve body that is threaded, and safety valve plug-in unit inside has the locking nut of a pressure adjusting screw and locking screw.
4. a kind of hydraulic pressure combination brake switch and proporting according to claim 1 is characterized in that described safety valve plug-in unit is one, and the safety valve plug-in unit is by the valve body that is threaded, safety valve plug-in unit inside has-and the locking nut of pressure adjusting screw and locking screw.
5. a kind of hydraulic pressure combination brake switch and proporting according to claim 1 is characterized in that described valve body is step-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720069265 CN201043542Y (en) | 2007-04-24 | 2007-04-24 | Hydraulic combined valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720069265 CN201043542Y (en) | 2007-04-24 | 2007-04-24 | Hydraulic combined valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043542Y true CN201043542Y (en) | 2008-04-02 |
Family
ID=39258436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720069265 Expired - Fee Related CN201043542Y (en) | 2007-04-24 | 2007-04-24 | Hydraulic combined valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201043542Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878143A (en) * | 2012-10-27 | 2013-01-16 | 郑州宇通重工有限公司 | Self-cleaning oil recharging lockup valve of combination type hydraulic cylinder |
| CN103174695A (en) * | 2013-03-12 | 2013-06-26 | 中国十七冶集团有限公司 | Two-position double-control combined valve for hydraulic device |
-
2007
- 2007-04-24 CN CN 200720069265 patent/CN201043542Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878143A (en) * | 2012-10-27 | 2013-01-16 | 郑州宇通重工有限公司 | Self-cleaning oil recharging lockup valve of combination type hydraulic cylinder |
| CN103174695A (en) * | 2013-03-12 | 2013-06-26 | 中国十七冶集团有限公司 | Two-position double-control combined valve for hydraulic device |
| CN103174695B (en) * | 2013-03-12 | 2016-01-20 | 中国十七冶集团有限公司 | A kind of two dual control combination brake switch and proporting for hydraulic equipment |
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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: 20080402 Termination date: 20160424 |