CN108730255A - A kind of luffing balanced valve - Google Patents
A kind of luffing balanced valve Download PDFInfo
- Publication number
- CN108730255A CN108730255A CN201810857492.4A CN201810857492A CN108730255A CN 108730255 A CN108730255 A CN 108730255A CN 201810857492 A CN201810857492 A CN 201810857492A CN 108730255 A CN108730255 A CN 108730255A
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- CN
- China
- Prior art keywords
- valve
- spring
- oil
- port
- balanced
- 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.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 2
- 238000013016 damping Methods 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of luffing balanced valves, the luffing balanced valve includes a valve block, the valve block is equipped with pressure oil port, oil-feed port and control port, check valve, overflow valve and the balanced valve respectively to work independently is equipped in the valve block, hydraulic oil can be introduced by pressure oil port in check valve, then pass through oil-feed port again, the pressure of the off-loadable oil-feed port of overflow valve, the control oil can be entered by control port in balanced valve, and balanced valve can open the oil sealing mouth between oil-feed port and pressure oil port.The present invention individually arranges check valve, overflow valve, balanced valve, effectively reduces difficulty of processing, and also substantially increases the damping of balanced valve.
Description
Technical field
The present invention relates to a kind of hydraulic control valves, and in particular to a kind of luffing balanced valve.
Background technology
Check valve, overflow valve and balanced valve in existing luffing balanced valve are not independently to arrange, overall structure is non-
It is often complicated.
In addition, the damping of balanced valve is also bad.
Invention content
The present invention to solve the above-mentioned problems, to provide a kind of luffing balanced valve.
In order to achieve the above objectives, technical scheme is as follows：
A kind of luffing balanced valve, the luffing balanced valve include a valve block, and the valve block is equipped with pressure oil port, oil-feed port
And control port, the valve block is interior to be equipped with check valve, overflow valve and the balanced valve respectively to work independently, and hydraulic oil can pass through pressure
Hydraulic fluid port is introduced into check valve, then passes through oil-feed port, the pressure of the off-loadable oil-feed port of overflow valve, the control oil again
It can be entered in balanced valve by control port, balanced valve can open the oil sealing mouth between oil-feed port and pressure oil port.
In a preferred embodiment of the invention, the check valve include the first valve body, nonreturn valve core, the first spring and
First plug screw, the nonreturn valve core and the first spring are packed into the first valve body together, and make the first spring by the first plug screw screw-in
Precommpression.
In a preferred embodiment of the invention, the overflow valve includes overflow spool, the second valve body, spring base,
Two springs and regulator, second valve body are connected to valve block, and the regulator, second spring and spring base are set gradually
In the second valve body, overflow spool one end is connect with spring base, and pressure release runner, the pressure release runner are equipped in the valve block
It is connected to oil-feed port, the overflow spool other end assigns into pressure release runner, and is reserved with gap between pressure release runner.
In a preferred embodiment of the invention, the regulator includes washer, the second plug screw and lock-screw, institute
It states washer to connect with second spring one end by lock-screw, second plug screw is connected with lock-screw.
In a preferred embodiment of the invention, the connecting end surface of the overflow spool and spring base is spherical shape, described
The bottom face of spring base is taper.
In a preferred embodiment of the invention, the balanced valve includes third valve body, balance valve core, Glais ring, puts down
Weighing apparatus valve seat and hydraulic pressure vessel, the third valve body are connected to valve block, and the balance valve core is arranged in valve block, and can block fuel feeding
Oil sealing mouth between mouth and pressure oil port, the Glais ring setting are being balanced in balance valve core one end, the balance valve seat setting
The spool other end, the balance valve core are equipped with several stepped arc grooves or half slot, the hydraulic pressure vessel setting
It is connect in third valve body, and with balance valve seat.
In a preferred embodiment of the invention, the hydraulic pressure vessel includes balance valve spring retainer, third spring, damping
Device, third spring base, the 4th spring, the 4th spring base, steel ball, third plug screw, the 4th plug screw and washer, the steel ball setting exist
Valve seat one end is balanced, the 4th spring base is contacted with steel ball, and the 4th spring is connect with the 4th spring base, the third bullet
Spring abutment is connect with the 4th spring, and the damper is connect with third spring base, and the balance valve spring retainer is connect with third spring,
4th plug screw is connect with balance valve spring retainer, and the third plug screw and the 4th plug screw are connected, in the damper shaft
Equipped with first flow, second flow channel is equipped in the balance valve seat, equipped with the between the balance valve seat and balance valve spring retainer
Three runners.
In a preferred embodiment of the invention, it is equipped with the first O-ring between the third valve body and valve block, described the
The second O-ring is equipped between four plug screws and third valve body.
The beneficial effects of the invention are as follows：
The present invention individually arranges check valve, overflow valve, balanced valve, effectively reduces difficulty of processing, and also greatly improve
The damping of balanced valve.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of check valve；
Fig. 3 is the structural schematic diagram of overflow valve；
Fig. 4 is the structural schematic diagram of balanced valve；
Fig. 5 is the structural schematic diagram of balance valve core；
Fig. 6 is the sectional view in the directions A-A in Fig. 5.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to Fig. 1 to Fig. 6, luffing balanced valve provided by the invention a comprising valve block 200 is equipped with pressure in valve block 200
Power hydraulic fluid port V, oil-feed port C and control port P, the switching in valve block 200 between pressure oil port V and control port P pass through reversal valve
To convert.
Check valve 300, overflow valve 400 and the balanced valve 500 respectively to work independently is equipped in valve block 200.
Check valve 300 is to be acted for realizing the lifting of hydraulic cylinder comprising the first valve body 304, nonreturn valve core
301, the first spring 302 and the first plug screw 303, and nonreturn valve core 301 and the first spring 302 are packed into together in the first valve body 304,
And make 302 precommpression of the first spring, hydraulic oil that can enter the first valve body by pressure oil port V by the first plug screw 303 screw-in
In 304, the spring force of the first spring 302 is then overcome, the oil-feed port C that goes directly is to hydraulic cylinder rodless cavity fuel feeding, to realize mobile jib
Lifting action.
The check valve 300 being made up of above structure can realize independent arrangement, avoid nonreturn valve core 301 and balanced valve
When 500 balance valve core 514 is coaxially arranged the problem of concentricity, which simplify structures.
In addition, nonreturn valve core 301 is equipped with the conical surface, hard sealing is formed between the conical surface and the first valve body 304, meets pressurize and wants
It asks, and 302 rigidity of the first spring is smaller, can effectively reduce pressure loss when positive open.
In hydraulic cylinder lifting or packing stage, due to external load effect or temperature liter etc., oil-feed port C pressure may
It increases close to hydraulic cylinder rated pressure, it is therefore desirable to which by discharge degree, and overflow valve 400 can be used for unloading pressure.
Overflow valve 400 includes overflow spool 401, the second valve body 404, spring base 402, second spring 403 and regulator,
Second valve body 404 is connected to valve block 200, and regulator, second spring 403 and spring base 402 are successively set on the second valve body 404
Interior, 401 one end of overflow spool is connect with spring base 402, and the other end assigns into the pressure release runner of valve block 200, and with pressure release stream
Gap is reserved between road.
The pressure that oil-feed port C is passed over can be flowed into and acted on by the gap between overflow spool 401 and pressure release runner
In 401 lower end of overflow spool, pushes spool 401 to overcome the spring force for the second spring 403 set up in advance, make part fluid from confession
Hydraulic fluid port C flows to pressure oil port V and returns to fuel tank realization discharge degree.
In addition, the application can also adjust unloading pressure by regulator, regulator includes washer 405, the second plug screw
406 and lock-screw 407, washer 405 connect with 403 one end of second spring by lock-screw 407, need adjust pressure when,
The second plug screw 406 need to be only dismantled, lock-screw 407 is unclamped, adjusting washer (disk) 405 after the completion of setting, then locks lock-screw 407,
Screw on the second plug screw 406, you can, the second plug screw 406, can effectively protect washer 405 prevents artificial maloperation.
Furthermore overflow spool 401 and the connecting end surface of spring base 402 are spherical shape, and the bottom face of spring base 402 is and ball
The taper of shape corresponding matching can play the role of centering, and can guarantee second spring between spring base 402 and washer 405 in this way
403 are effectively compressed.
Balanced valve 500 is the decline for realizing hydraulic cylinder and luffing comprising third valve body 517, balance valve core
514, Glais ring 515, balance valve seat 513 and hydraulic pressure vessel 5080, third valve body 517 are connected to valve block 200, balance valve core 514
It is arranged in valve block 200, and the oil sealing mouth 210 between oil-feed port C and pressure oil port V can be blocked, the setting of Glais ring 515 is balancing
514 one end of spool, for the setting of balance valve seat 513 in 514 other end of balance valve core, it is in ladder that balance valve core 514, which is equipped with several,
The arc groove or half slot 5140 of shape.
Control oil can enter 515 side of Glais ring of balance valve core 514 from control port P, with the raising of control pressure,
Control pressure gradually balances the spring force on valve seat 513, and balance valve core 514 can be moved up by promotion, and balance valve core 514 is mobile
In the process, each arc groove on balance valve core 514 or half slot 5140 can be contacted gradually with oil sealing mouth 210, to gradually will
Oil sealing mouth 210 is opened, and the fluid on oil-feed port C can flow to pressure oil port V by oil sealing mouth 210, to realize that hydraulic cylinder declines.
The width and depth of arc groove or half slot 5140 on balance valve core 514 successively from small to large, and along balanced valve
514 center of core is evenly arranged in 120 °, effectively reduces elliptical gear in this way, and structure is relatively simple, easy to process.
In addition, the application is by being used for the Glais ring 515 on balance valve core 514 that control port P and pressure oil port is isolated
V, kinetic friction force is smaller, contributes to 514 smooth motion of balance valve core.
Hydraulic pressure vessel 5080 is arranged in third valve body 517, is the shape for its internal fluid to be slowly discharged
Impact when at preferable damping and reducing pressure release comprising balance valve spring retainer 505, third spring 506, damping
Device 507, third spring base 508, the 4th spring 509, the 4th spring base 510, steel ball 511, third plug screw 501, the 4th plug screw 502
With washer 504.
The setting of steel ball 511 is contacted in balance valve seat 513 one end, the 4th spring base 510 with steel ball 511, the 4th spring 509 and
4th spring base 510 connects, and third spring base 508 is connect with the 4th spring 509, and damper 507 connects with third spring base 508
It connects, balance valve spring retainer 505 is connect with third spring 506, and the 4th plug screw 502 is connect with balance valve spring retainer 505, third plug screw
501 and the 4th plug screw 502 be connected, third spring 506 be in relaxation state, and ready to balance spool 514 is packed into valve block 200 in place
Afterwards, third spring 506 is compressed, and balance valve core 514 is compacted on oil sealing mouth 210, only when in control port P pressure
Rising just can be gradually open-top by it, realizes the decentralization of hydraulic cylinder.
It is equipped with first flow 5070 in 507 axis of damper, second flow channel 5050 is equipped in balance valve seat 513, flat
It weighs and is equipped with third flow channel 5130 between valve seat 513 and balance valve spring retainer 505.
When balance valve core 514 is seated on oil sealing mouth 210, this 5180 inner fluid of hydraulic pressure vessel can be from damper 507
First flow 5070 using balance valve seat 513 second flow channel 5050 flow out, and balance valve core 514 open being moved through
Cheng Zhong, second flow channel 5050 can be closed gradually, and the fluid in hydraulic pressure vessel 5180 can only slowly be flowed from third flow channel 5130
Go out, forms damping action, significantly reduce hydraulic shock when oil-feed port C to pressure oil port V is opened.
In addition, in order to improve leakproofness, the first O-ring 512 is equipped between third valve body 517 and valve block 200, the 4th
The second O-ring 503 is equipped between plug screw 502 and third valve body 517.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of luffing balanced valve, the luffing balanced valve includes a valve block, the valve block be equipped with pressure oil port, oil-feed port and
Control port, which is characterized in that check valve, overflow valve and the balanced valve respectively to work independently, hydraulic oil are equipped in the valve block
It can be introduced into check valve by pressure oil port, then again by oil-feed port, the pressure of the off-loadable oil-feed port of overflow valve,
The control oil can be entered by control port in balanced valve, and balanced valve can be by the oil sealing mouth between oil-feed port and pressure oil port
It opens.
2. a kind of luffing balanced valve according to claim 1, which is characterized in that the check valve includes the first valve body, list
To spool, the first spring and the first plug screw, the nonreturn valve core and the first spring are packed into together in the first valve body, and pass through first
Plug screw screw-in makes the first spring precommpression.
3. a kind of luffing balanced valve according to claim 1, which is characterized in that the overflow valve includes overflow spool,
Two valve bodies, spring base, second spring and regulator, second valve body are connected to valve block, the regulator, second spring
It is successively set in the second valve body with spring base, overflow spool one end is connect with spring base, and pressure release is equipped in the valve block
Runner, the pressure release runner are connected to oil-feed port, and the overflow spool other end assigns into pressure release runner, and with pressure release runner
Between be reserved with gap.
4. a kind of luffing balanced valve according to claim 3, which is characterized in that the regulator includes washer, second
Plug screw and lock-screw, the washer are connect by lock-screw with second spring one end, second plug screw and lock-screw
It is connected.
5. a kind of luffing balanced valve according to claim 3, which is characterized in that the connection of the overflow spool and spring base
End face is spherical shape, and the bottom face of the spring base is taper.
6. a kind of luffing balanced valve according to claim 1, which is characterized in that the balanced valve includes third valve body, puts down
Weighing apparatus spool, Glais ring, balance valve seat and hydraulic pressure vessel, the third valve body are connected to valve block, and the balance valve core is arranged in valve
In block, and the oil sealing mouth between oil-feed port and pressure oil port can be blocked, Glais ring setting is described flat in balance valve core one end
Valve seat setting weigh in the balance valve core other end, the balance valve core is equipped with several stepped arc grooves or half slot,
The hydraulic pressure vessel is arranged in third valve body, and is connect with balance valve seat.
7. a kind of luffing balanced valve according to claim 6, which is characterized in that the hydraulic pressure vessel includes balance valve spring
Seat, third spring, damper, third spring base, the 4th spring, the 4th spring base, steel ball, third plug screw, the 4th plug screw and pad
Circle, the steel ball setting is in balance valve seat one end, and the 4th spring base is contacted with steel ball, the 4th spring and the 4th spring
Seat connection, the third spring base are connect with the 4th spring, and the damper is connect with third spring base, the balance valve spring
Seat is connect with third spring, and the 4th plug screw is connect with balance valve spring retainer, and the third plug screw and the cooperation of the 4th plug screw connect
It connects, first flow is equipped in the damper shaft, second flow channel, the balance valve seat and balanced valve are equipped in the balance valve seat
Third flow channel is equipped between spring base.
8. a kind of luffing balanced valve according to claim 7, which is characterized in that be equipped between the third valve body and valve block
First O-ring is equipped with the second O-ring between the 4th plug screw and third valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857492.4A CN108730255A (en) | 2018-07-31 | 2018-07-31 | A kind of luffing balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857492.4A CN108730255A (en) | 2018-07-31 | 2018-07-31 | A kind of luffing balanced valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108730255A true CN108730255A (en) | 2018-11-02 |
Family
ID=63941997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810857492.4A Pending CN108730255A (en) | 2018-07-31 | 2018-07-31 | A kind of luffing balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730255A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111824988A (en) * | 2020-07-27 | 2020-10-27 | 宁波江北宇洲液压设备厂 | Amplitude-variable balance valve with limiting function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317706A (en) * | 1996-05-27 | 1997-12-09 | Hitachi Constr Mach Co Ltd | Fall prevention valve device with regenerative function |
| CN201636134U (en) * | 2010-03-26 | 2010-11-17 | 三一重型装备有限公司 | Safety balance valve bank |
| CN203395281U (en) * | 2013-08-21 | 2014-01-15 | 温州南方游乐设备工程有限公司 | Single-action emergency balancing valve group |
| CN203978968U (en) * | 2014-07-22 | 2014-12-03 | 株洲市文佳实业有限公司 | Plastic deformation squeezes the hydraulic system of forging molding equipment |
| CN207470508U (en) * | 2017-07-13 | 2018-06-08 | 徐工集团工程机械有限公司 | Rotary motor valve group end cap and rotary motor |
| CN208578788U (en) * | 2018-07-31 | 2019-03-05 | 上海立新液压有限公司 | A kind of luffing balanced valve |
-
2018
- 2018-07-31 CN CN201810857492.4A patent/CN108730255A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317706A (en) * | 1996-05-27 | 1997-12-09 | Hitachi Constr Mach Co Ltd | Fall prevention valve device with regenerative function |
| CN201636134U (en) * | 2010-03-26 | 2010-11-17 | 三一重型装备有限公司 | Safety balance valve bank |
| CN203395281U (en) * | 2013-08-21 | 2014-01-15 | 温州南方游乐设备工程有限公司 | Single-action emergency balancing valve group |
| CN203978968U (en) * | 2014-07-22 | 2014-12-03 | 株洲市文佳实业有限公司 | Plastic deformation squeezes the hydraulic system of forging molding equipment |
| CN207470508U (en) * | 2017-07-13 | 2018-06-08 | 徐工集团工程机械有限公司 | Rotary motor valve group end cap and rotary motor |
| CN208578788U (en) * | 2018-07-31 | 2019-03-05 | 上海立新液压有限公司 | A kind of luffing balanced valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111824988A (en) * | 2020-07-27 | 2020-10-27 | 宁波江北宇洲液压设备厂 | Amplitude-variable balance valve with limiting function |
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