CN102536939A - Root overflow valve - Google Patents
Root overflow valve Download PDFInfo
- Publication number
- CN102536939A CN102536939A CN2012100006390A CN201210000639A CN102536939A CN 102536939 A CN102536939 A CN 102536939A CN 2012100006390 A CN2012100006390 A CN 2012100006390A CN 201210000639 A CN201210000639 A CN 201210000639A CN 102536939 A CN102536939 A CN 102536939A
- Authority
- CN
- China
- Prior art keywords
- oil
- mounting hole
- connecting rod
- relief valve
- guide
- 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.)
- Granted
Links
- 230000007704 transition Effects 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 60
- 238000000034 method Methods 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Abstract
The invention discloses a root overflow valve comprising a transitional block, wherein a pilot oil passage which is communicated with the left and the right sides of the transitional block is formed in the transitional block; a screw plug is mounted at the opening at the left end of the pilot oil passage in a sealed manner; a spring seat is arranged on the inner surface of the screw plug; a spring is sleeved on the spring seat; a valve core, which is slidably mounted in the pilot oil passage, is fixedly mounted at the right end of the spring; a pilot oil inlet connector is arranged on the right side wall of the pilot oil passage; an overflow valve mounting hole and an oil inlet connecting rod mounting hole are formed in the upper and the lower surfaces of the transitional block; the bottoms of the overflow valve mounting hole and the oil inlet connecting rod mounting hole are communicated with the pilot oil passage respectively; an overflow valve is mounted in the overflow valve mounting hole; and an oil inlet connecting rod is mounted in the oil inlet connecting rod mounting hole. The root overflow valve has the advantages that the micro operation of an excavating machine can be fulfilled easily; the operation is harmonious; and oil distribution is reasonable and ordered.
Description
Technical field
The present invention relates to a kind of root relief valve.
Background technique
Can't be complementary with little latus rectum hydrovalve to more present excavators, and the hydrovalve of present little latus rectum has many bottlenecks in manufacturing, processing, assembling, context of detection.
Summary of the invention
The present invention provides a kind of is convenient to excavator fine motion work, help coordination, and fluid distributes the root relief valve of rational and orderly.
Technical solution problem of the present invention provides following scheme:
A kind of root relief valve comprises transition block, it is characterized in that: said transition block is provided with the guide oil oil duct of left and right UNICOM; The left end opening of said guide oil oil duct is sealed and installed with plug screw; The internal surface of said plug screw is provided with spring seat, is with spring on the said spring seat, and the right-hand member of said spring is installed with spool; Said spool is slidably mounted in the guide oil oil duct; The right side wall of said guide oil oil duct is provided with the guide oil fuel inlet fitting, and the upper and lower surface of said transition block is provided with relief valve mounting hole and oil-feed connecting rod mounting hole, said relief valve mounting hole bottom, oil-feed connecting rod mounting hole bottom respectively with guide oil oil duct UNICOM; In the said relief valve mounting hole relief valve is installed, in the said oil-feed connecting rod mounting hole oil-feed connecting rod is installed.
The sidewall of the guide oil oil duct on the spool right side of installing in the said guide oil oil duct is provided with left and right two grooves; The relief valve mounting hole of said left side groove UNICOM upper end; The oil-feed connecting rod groove of said the right groove UNICOM below; In the time of the stressed extrusion spring to the right of spool, spool can be with left and right two grooves sealing.
Said oil-feed connecting rod is provided with oil-feed oil duct and the oil return oil duct that runs through the connecting rod front end and back end, and the sidewall of said oil-feed connecting rod is provided with the filler opening and the oil outlet of oil return oil duct.
The sidewall of said relief valve mounting hole is provided with drainback passage, the filler opening of the oil return oil duct on the said drainback passage UNICOM oil-feed connecting rod.
The sidewall of said oil-feed connecting rod mounting hole is provided with the oil circuit of UNICOM's guide oil oil duct.
The present invention has added a root relief valve (3 2 logical valves) before original relief valve, the control port of this valve communicates with pilot valve and main valve stem pilot port.Pilot pressure 32 logical valves when certain stage are in diverse location; Thereby can guarantee the coordination of excavator fine motion work, big-movement; Make big specification multi-way valve can replace little latus rectum hydrovalve; Reach fluid and distribute rational and orderly, thereby solved the deficiency of aspects such as casting processing that conventional lattice hydrovalve exists, assembling.
Working procedure of the present invention:
Hydraulic oil is entered from the filler opening of oil-feed connecting rod, arrives the bottom of oil-feed connecting rod mounting hole, and the right groove from guide oil oil duct sidewall enters in the left groove; Groove by the left side enters in the relief valve mounting hole of upper end again, and at this moment, the guide oil jointing on transition block right side connects guide oil again; When guide oil enters in the guide oil oilhole; Spool is pushed, and when spool was extruded, spool can be moved to the left; The sidewall of spool gradually can dwindle the oil through of left and right sides groove, and detailed process is:
When guide oil pressure during at 0-9bar, this spool is in leftmost bit, and at this moment digging machine is in the big-movement state; Pilot power is when 9-18bar in the ban, and this valve is in meta, and the beginning throttling is convenient to fine motion and is done; Pilot power is when 18-40bar in the ban, and this valve is in rightmost position, cuts off relief valve, makes its main valve can set up pressure, and the stroke of each main valve also has reducing in varying degrees at the same time.Its purpose is exactly the opening degree that reduces main valve, changes its flow, and the also corresponding raising of the spring rate of each main valve its objective is in order to solve the coordination in when operation, makes the AV280 multi-way valve can satisfy the characteristic requirements of AV170 valve fully.
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Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Referring to accompanying drawing, a kind of root relief valve comprises transition block 1; Said transition block 1 is provided with the guide oil oil duct 2 of left and right UNICOM, and the left end opening of said guide oil oil duct 2 is sealed and installed with plug screw 3, and the internal surface of said plug screw 3 is provided with spring seat 4; Be with spring 5 on the said spring seat 4; The right-hand member of said spring 5 is installed with spool 6, and said spool 6 is slidably mounted in the guide oil oil duct 2, and the right side wall of said guide oil oil duct 2 is provided with guide oil fuel inlet fitting 7; The upper and lower surface of said transition block 1 is provided with relief valve mounting hole 8 and oil-feed connecting rod mounting hole 9; Said relief valve mounting hole 8 bottoms, oil-feed connecting rod mounting hole 9 bottoms respectively with guide oil oil duct 2 UNICOMs, in the said relief valve mounting hole 8 relief valve 10 is installed, in the said oil-feed connecting rod mounting hole 9 oil-feed connecting rod 11 is installed.
The sidewall of the guide oil oil duct 2 on spool 6 right sides of installing in the said guide oil oil duct 2 is provided with left and right two grooves 12,13; The relief valve mounting hole 8 of said left side groove 12 UNICOMs upper end; The oil-feed connecting rod groove 9 of said the right groove 13 UNICOMs below; In the time of the stressed extrusion spring to the right of spool 65, spool 6 can seal by left and right two grooves 12,13.
Said oil-feed connecting rod 11 is provided with the oil-feed oil duct 14 and oil return oil duct 15 that runs through the connecting rod front end and back end, and the sidewall of said oil-feed connecting rod 11 is provided with the filler opening 16 and oil outlet 17 of oil return oil duct.
The sidewall of said relief valve mounting hole 8 is provided with drainback passage 18, the filler opening 16 of the oil return oil duct on the said drainback passage 18 UNICOMs oil-feed connecting rod 11.
The sidewall of said oil-feed connecting rod mounting hole 9 is provided with the oil circuit 19 of UNICOM's guide oil oil duct 2.
Claims (5)
1. a root relief valve comprises transition block, it is characterized in that: said transition block is provided with the guide oil oil duct of left and right UNICOM; The left end opening of said guide oil oil duct is sealed and installed with plug screw; The internal surface of said plug screw is provided with spring seat, is with spring on the said spring seat, and the right-hand member of said spring is installed with spool; Said spool is slidably mounted in the guide oil oil duct; The right side wall of said guide oil oil duct is provided with the guide oil fuel inlet fitting, and the upper and lower surface of said transition block is provided with relief valve mounting hole and oil-feed connecting rod mounting hole, said relief valve mounting hole bottom, oil-feed connecting rod mounting hole bottom respectively with guide oil oil duct UNICOM; In the said relief valve mounting hole relief valve is installed, in the said oil-feed connecting rod mounting hole oil-feed connecting rod is installed.
2. according to the said root relief valve of claim 1; It is characterized in that: the sidewall of the guide oil oil duct on the spool right side of installing in the said guide oil oil duct is provided with left and right two grooves; The relief valve mounting hole of said left side groove UNICOM upper end; The oil-feed connecting rod groove of said the right groove UNICOM below, in the time of the stressed extrusion spring to the right of spool, spool can seal by left and right two grooves.
3. according to the said root relief valve of claim 1, it is characterized in that: said oil-feed connecting rod is provided with oil-feed oil duct and the oil return oil duct that runs through the connecting rod front end and back end, and the sidewall of said oil-feed connecting rod is provided with the filler opening and the oil outlet of oil return oil duct.
4. according to the said root relief valve of claim 1, it is characterized in that: the sidewall of said relief valve mounting hole is provided with drainback passage, the filler opening of the oil return oil duct on the said drainback passage UNICOM oil-feed connecting rod.
5. according to the said root relief valve of claim 1, it is characterized in that: the sidewall of said oil-feed connecting rod mounting hole is provided with the oil circuit of UNICOM's guide oil oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210000639.0A CN102536939B (en) | 2012-01-04 | 2012-01-04 | Root overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210000639.0A CN102536939B (en) | 2012-01-04 | 2012-01-04 | Root overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536939A true CN102536939A (en) | 2012-07-04 |
| CN102536939B CN102536939B (en) | 2015-01-14 |
Family
ID=46344666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210000639.0A Expired - Fee Related CN102536939B (en) | 2012-01-04 | 2012-01-04 | Root overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536939B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039476A (en) * | 1985-09-06 | 1990-02-07 | 日立建机株式会社 | Flow control valve with pressure compensation |
| US6164322A (en) * | 1999-01-15 | 2000-12-26 | Saturn Electronic & Engineering, Inc. | Pressure relief latching solenoid valve |
| US20050211308A1 (en) * | 2004-03-24 | 2005-09-29 | Sauer-Danfoss Inc. | Pressure limiting valve in a hydraulic machine and hydraulic machine having a pressure limiting valve |
| CN101749447B (en) * | 2008-12-03 | 2010-12-29 | 徐州重型机械有限公司 | Flow control valve |
| CN201705749U (en) * | 2010-07-02 | 2011-01-12 | 上海立新液压有限公司 | Hydraulic control flow valve provided with overflow valve plug-in unit and pressure compensation plug-in unit |
-
2012
- 2012-01-04 CN CN201210000639.0A patent/CN102536939B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039476A (en) * | 1985-09-06 | 1990-02-07 | 日立建机株式会社 | Flow control valve with pressure compensation |
| US6164322A (en) * | 1999-01-15 | 2000-12-26 | Saturn Electronic & Engineering, Inc. | Pressure relief latching solenoid valve |
| US20050211308A1 (en) * | 2004-03-24 | 2005-09-29 | Sauer-Danfoss Inc. | Pressure limiting valve in a hydraulic machine and hydraulic machine having a pressure limiting valve |
| CN101749447B (en) * | 2008-12-03 | 2010-12-29 | 徐州重型机械有限公司 | Flow control valve |
| CN201705749U (en) * | 2010-07-02 | 2011-01-12 | 上海立新液压有限公司 | Hydraulic control flow valve provided with overflow valve plug-in unit and pressure compensation plug-in unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102536939B (en) | 2015-01-14 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |