CN106402071B - Pressure control device and the hydraulic system using the device - Google Patents
Pressure control device and the hydraulic system using the device Download PDFInfo
- Publication number
- CN106402071B CN106402071B CN201610840575.3A CN201610840575A CN106402071B CN 106402071 B CN106402071 B CN 106402071B CN 201610840575 A CN201610840575 A CN 201610840575A CN 106402071 B CN106402071 B CN 106402071B
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- China
- Prior art keywords
- guide rod
- overflow valve
- control device
- plug
- pressure control
- 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.)
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- 230000009471 action Effects 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000009987 spinning Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 230000037361 pathway Effects 0.000 claims 5
- 230000010355 oscillation Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008961 swelling 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0493—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a spring other than a helicoidal spring
Abstract
Hydraulic system the present invention relates to the pressure control device in Hydraulic Field and using the device, pressure control device includes overflow valve, plug is equipped at the inlet of overflow valve, the pressure control device further includes the elastic pressuring clamping device for providing the plug active force towards overflow valve inlet, the plug has the closure position fitted closely under the action of elastic pressuring clamping device with overflow valve inlet, plug also has under hydraulic system pressure effect, plug overcomes the active force of elastic pressuring clamping device and acts, the open position for opening the inlet of overflow valve；The Opening pressure of elastic pressuring clamping device is more than the Opening pressure of overflow valve itself；Compared with the prior art, it can effectively solve the problem that the pressure oscillation of hydraulic system, be easy to cause the problem of overflow valve is accidentally opened, improve the stability of hydraulic system pressure.
Description
Technical field
The present invention relates to a kind of pressure control devices for being used to control hydraulic system pressure in Hydraulic Field；The present invention is also
It is related to a kind of hydraulic system using the device.
Background technology
Pressure control device is the important component of the hydraulic pressure decorum, for the pressure of hydraulic system being controlled the range in design
It is interior, ensure the normal work of hydraulic system；Currently used main two kinds of pressure control device：
1st, the principle of existing frequently-used bowden tubular type pressure control device is metal tube by compression swelling, touches travel switch and touches
Point disconnects or conducting.Due to being limited by processing technology and Bourdon tube material itself, after long-time service, stability is poor, pressure
Fluctuation is bigger；And it is architectural limitation, wave lamp tube type pressure control device does not have overflow valve, it is impossible to which hydraulic system is carried out
Overload protection.
2nd, existing frequently-used plunger type pressure switch is that hydraulic coupling is touched by compressing cylindrical helical spring, drive mandril
Travel switch contact disconnects or conducting；Since the pressure and decrement of cylindrical helical spring are linearly proportional, work as system
Rated pressure setting after, due to the excess of stroke of travel switch contact be it is certain, only system pressure decline to a certain extent after,
Mandril could touch the contacting of travel switch, to system ftercompction；The fluctuation range of the operating pressure of pressure switch is bigger,
Reduce the stability of system；And due to the structure using inside and outside suit, often occur because of the interference of inside and outside spring
Clamping stagnation causes stress fluctuation.
Overflow valve is provided on plunger type pressure switch, when system pressure is excessive, the valve port of overflow valve is opened, fluid
Pass sequentially through the inlet of overflow valve, valve port is discharged from overflow port, decline system pressure, but in actual use, hydraulic pressure
There are pressure oscillation, smaller pressure oscillations to be also easy to cause opening by mistake for overflow valve and open for system, is unfavorable for the stabilization of hydraulic system.
Invention content
The purpose of the present invention is to provide a kind of pressure control device, to solve existing for existing pressure control device
Due to the pressure oscillation of hydraulic system, and it is easy to cause the problem of overflow valve is accidentally opened；The present invention also aims to provide one
Kind uses the hydraulic system of the device.
To achieve the above object, a kind of technical solution of pressure control device of the invention is：
Pressure control device including overflow valve, is equipped with plug, the pressure control device also wraps at the inlet of overflow valve
Include the elastic pressuring clamping device for the active force towards overflow valve inlet to be provided the plug, the plug has in elasticity
The closure position fitted closely under the action of pressing device with overflow valve inlet, plug also have in hydraulic system pressure effect
Under, plug overcomes the active force of elastic pressuring clamping device and acts, the open position for opening the inlet of overflow valve；Elastic compression fills
The Opening pressure put is more than the Opening pressure of overflow valve itself.
The overflow valve includes overflow valve body, is oriented on overflow valve body and is equipped with guide rod, guide rod and overflow valve
Guide rod spring is equipped between valve body, the plug is set to the end of one end of the close overflow valve inlet of guide rod, leads
The elastic pressuring clamping device is formed to bar and guide rod spring.
The pressure control device includes valve body and valve seat, and valve body is assemblied on valve seat, is oriented on valve body and is equipped with plunger,
The overflow valve is set on valve seat, and plunger is equipped with along the axially extending guide groove of plunger, is oriented to be equipped in guide groove and be led
To bar, guide rod spring, the plug setting are equipped between one end matched with guide groove of guide rod and guiding groove bottom
In the other end of guide rod；The elastic pressuring clamping device is set to the top of plunger, and elastic pressuring clamping device includes spring strut, spring
Cylinder is set to above valve body, and push rod is equipped in spring strut, and push rod spring is equipped on push rod, and the lower end of push rod is used to connect with piston
Touch stress；Guide rod is equipped with stop section, and guide groove is equipped with the stop section on guide rod along guide rod axial direction block
The stop part of cooperation.
Guide sleeve is equipped with above valve body, spring strut is assemblied in by guide sleeve on valve body, and the peripheral surface of guide sleeve is equipped with
Annular flange, the bottom of spring strut are equipped with the installation step for the flange installation on guide sleeve, and the plunger guide, which is assemblied in, to be led
To putting on, the mating surface of plunger and guide sleeve is equipped with sealing ring.
The push rod is inverted T-bar, steel ball is equipped between push rod and plunger, on the bottom surface of push rod and the top surface of plunger
It is respectively equipped with the groove that positioning is contacted with the steel ball.
The push rod spring is disk spring.
The guide rod is the reducing bar of two-part, there is transition face, the mistake between the major diameter section and path section of guide rod
The stop section that face forms guide rod is crossed, the major diameter section of guide rod is assemblied in guide groove, and the stop part is is set to guide groove
On baffle ring；The corresponding mounting hole being equipped with for the installation of guide rod spring in guide rod major diameter section end and the bottom of guide groove, institute
State the end that plug is set to the path section of guide rod.
The top of guide rod major diameter section is rodless cavity in guide groove, and is there is bar in the lower section of guide rod major diameter section in guide groove
Chamber, guide rod are equipped with communicating passage, and interface channel makes rod chamber be connected with rodless cavity.
The plug includes gasket and plug screw, and the plug screw spinning is in guide rod path section end, the gasket dress
Assigned between plug screw bottom surface and guide rod path section end face.
A kind of technical solution of hydraulic system of the present invention is：
Hydraulic system, including hydraulic pump, hydraulic circuit and pressure control device, pressure control device includes overflow valve, overflows
It flows and plug is equipped at the inlet of valve, the pressure control device further includes to provide towards overflow valve feed liquor the plug
The elastic pressuring clamping device of the active force of mouth, the plug have close with overflow valve inlet under the action of elastic pressuring clamping device
The closure position of fitting, plug also have under hydraulic system pressure effect, and plug overcomes the active force of elastic pressuring clamping device and moves
Make, the open position for opening the inlet of overflow valve；The Opening pressure of elastic pressuring clamping device is more than the unlatching pressure of overflow valve itself
Power.
The overflow valve includes overflow valve body, is oriented on overflow valve body and is equipped with guide rod, guide rod and overflow valve
Guide rod spring is equipped between valve body, the plug is set to the end of one end of the close overflow valve inlet of guide rod, leads
The elastic pressuring clamping device is formed to bar and guide rod spring.
The pressure control device includes valve body and valve seat, and valve body is assemblied on valve seat, is oriented on valve body and is equipped with plunger,
The overflow valve is set on valve seat, and plunger is equipped with along the axially extending guide groove of plunger, is oriented to be equipped in guide groove and be led
To bar, guide rod spring, the plug setting are equipped between one end matched with guide groove of guide rod and guiding groove bottom
In the other end of guide rod；The elastic pressuring clamping device is set to the top of plunger, and elastic pressuring clamping device includes spring strut, spring
Cylinder is set to above valve body, and push rod is equipped in spring strut, and push rod spring is equipped on push rod, and the lower end of push rod is used to connect with piston
Touch stress；Guide rod is equipped with stop section, and guide groove is equipped with the stop section on guide rod along guide rod axial direction block
The stop part of cooperation.
Guide sleeve is equipped with above valve body, spring strut is assemblied in by guide sleeve on valve body, and the peripheral surface of guide sleeve is equipped with
Annular flange, the bottom of spring strut are equipped with the installation step for the flange installation on guide sleeve, and the plunger guide, which is assemblied in, to be led
To putting on, the mating surface of plunger and guide sleeve is equipped with sealing ring.
The push rod is inverted T-bar, steel ball is equipped between push rod and plunger, on the bottom surface of push rod and the top surface of plunger
It is respectively equipped with the groove that positioning is contacted with the steel ball.
The push rod spring is disk spring.
The guide rod is the reducing bar of two-part, there is transition face, the mistake between the major diameter section and path section of guide rod
The stop section that face forms guide rod is crossed, the major diameter section of guide rod is assemblied in guide groove, and the stop part is is set to guide groove
On baffle ring；The corresponding mounting hole being equipped with for the installation of guide rod spring in guide rod major diameter section end and the bottom of guide groove, institute
State the end that plug is set to the path section of guide rod.
The top of guide rod major diameter section is rodless cavity in guide groove, and is there is bar in the lower section of guide rod major diameter section in guide groove
Chamber, guide rod are equipped with communicating passage, and interface channel makes rod chamber be connected with rodless cavity.
The plug includes gasket and plug screw, and the plug screw spinning is in guide rod path section end, the gasket dress
Assigned between plug screw bottom surface and guide rod path section end face.
The beneficial effects of the invention are as follows：The present invention sets plug at the inlet of overflow valve, and elastic pressuring clamping device is opened
Open the Opening pressure that pressure is more than overflow valve itself；In use, when the pressure oscillation of hydraulic system is smaller, the feed liquor of overflow valve
Mouth is blocked by plug, and overflow valve will not be opened；Only when the pressure oscillation of hydraulic system is larger, plug and overflow valve inlet
It is detached from, overflow valve inlet is opened, and overflow valve can just be opened；Compared with the prior art, it can effectively solve the problem that in hydraulic system wave
When dynamic smaller, overflow valve misses the problem of opening, and improves the stability of hydraulic system pressure.
Further, guide rod is set in the guide groove of plunger, interface channel is set on guide rod, on guide rod,
The pressure balance of lower end drives guide rod movement so that the structure of pressure control device is more simple with the baffle ring on guide groove
Change, conducive to production.
Further, push rod spring is set as disk spring, compared to spiral used in existing pressure switch
Spring, the not linear proportionate relationship of pressure and decrement of disk spring, even if hydraulic system pressure changes smaller, disk spring
Also larger deflection can be generated, and then ensures that plunger there are enough strokes to trigger the travel switch for controlling hydraulic pump, is made
It obtains pressure control device and sensitiveer is reacted to the pressure oscillation of hydraulic system.
Description of the drawings
Fig. 1 is the structure diagram of the use state of the embodiment 1 of the pressure control device of the present invention；
In figure：1- travel switches, 2- head covers, 3- push rods, 4- push rod springs, 5- spring struts, 6- steel balls, 7- plungers, 8- are led
To bar spring, 9- guide sleeves, 10- guide rods, 11- valve bodies, 12- baffle rings, 13- gaskets, 14- plug screws, 15- overflow valve bases,
16- relief valve spools, 17- resetting springs, 18- valve seats, 19- inflow entrances, 20- outfluxes.
Specific embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The embodiment 1 of the pressure control device of the present invention, as shown in Figure 1, including valve body 11 and valve seat 18, valve body 11 passes through
Screw is installed on valve seat 18, and valve seat 18 is equipped with inflow entrance 19 and outflux 20, is equipped with overflow valve base at outflux 20, overflows
Overflow valve is installed, overflow valve includes relief valve spool 16 and resetting spring 17, relief valve spool 16 and overflow on stream valve base
Inlet on valve base is engaged.
The top of valve body 11 is equipped with spring strut 5, and the upper end of spring strut 5 is equipped with head cover 2, inverted T is equipped in spring strut 5
The push rod 3 of type structure, push rod spring 4 is stacked on push rod 3, and push rod spring 4 is disk spring；The company of valve body 11 and spring strut 5
It meets place and is equipped with guide sleeve 9, be oriented on guide sleeve 9 and be equipped with plunger 7, plunger 7 is oriented to contact surface with guide sleeve 9 and is equipped with sealing
Circle.
Plunger 7 is equipped with guide groove, is oriented on guide groove and is equipped with guide rod 10, and guide rod 10 is the change of two-part structure
Diameter bar has changeover portion between the major diameter section and path section of guide rod 10, which forms the stop section of guide rod 10；Guide rod
10 major diameter section guiding is assemblied in guide groove, corresponding between the major diameter section end of guide rod 10 and the guiding groove bottom of plunger 7
Be equipped with mounting hole, mounting hole be equipped with guide rod spring 8；Guide groove is equipped with baffle ring 12, and baffle ring 12 is along guide groove axial direction side
Coordinate to the stop section block with guide rod 10；Guide rod spring 8 is more than returning spring 17 to overflowing to the active force of guide rod 10
Flow the active force of valve core 16.
The top of the major diameter section of guide rod 10 is rodless cavity in guide groove, and the lower section of the major diameter section of guide rod 10 is no bar
Chamber；Guide rod 10 is equipped with interface channel, and interface channel is by the interconnected spring mounting hole bottom for being set to guide rod 10
The first hole vertically extended and be set to below the stop section of guide rod 10 along 10 radial direction of guide rod extend
The second hole form, interface channel makes rod chamber be connected with rodless cavity, makes the pressure of the hydraulic pressure for coming from valve body 11 of guide rod 10
Power balances each other；The end of the path section of guide rod 10 be equipped with plug, plug include gasket 13 and plug screw 14,14 spinning of plug screw with
The end of the path section of guide rod 10, gasket 13 be set to the bottom surface of plug screw 14 and the path section of guide rod 10 end face it
Between.
Steel ball 6 is equipped between push rod 3 and plunger 7, on the bottom surface of push rod 3 and the top surface of plunger 7 it is corresponding be equipped with
The groove of the contact of steel ball 6 positioning；For the contact portion with travel switch 1, travel switch 1 is used to control for the upper end of push rod 3
The keying of hydraulic pump processed.
The operation principle of embodiment 1 is as follows：Inflow entrance 19 is connected with hydraulic circuit, under normal circumstances, when hydraulic system
When pressure slightly above sets pressure, plunger 7 moves up, between the displacement of plunger 7 is less than between the stop section of plunger 7 and baffle ring 12
Away from plug is fitted closely with overflow valve inlet under the action of guide rod spring, and plug, which is in, blocks position, overflow valve inlet
It closes, overflow valve does not work, and push rod 3 overcomes the elastic force of push rod spring 4 to move upwards, and the contact of travel switch 1 disconnects, hydraulic pressure
Pump is stopped.
When the pressure of hydraulic system is excessive, plunger 7 moves up, and push rod 3 drives the contact of travel switch 1 to disconnect, hydraulic pump
It is stopped；Meanwhile the amount of moving up of plunger 7 is more than the spacing between the stop section of plunger 7 and baffle ring 12, plunger 7 passes through baffle ring
12 drive guide rods 10 move up, and plug is in open position, and overflow valve inlet is opened, and overflow valve is opened, the oil in hydraulic system
Liquid is discharged from outflux 20, makes the pressure reduction of hydraulic system.
When the pressure of hydraulic system is less than the setting pressure of system, push rod spring 4 drives push rod 3 and plunger 7 to move down, row
The contact closure of Cheng Kaiguan 1, hydraulic pump are started to work；Meanwhile guide rod 10 moves down under the action of guide rod spring, plug weight
New be returned to blocks position, and overflow valve inlet is closed, relief valve spool 16 under the action of resetting spring 17 with overflow valve feed liquor
Mouth fits closely, and overflow valve is closed, and the pressure of hydraulic system rises.
In the other embodiment of the embodiment 1 of the hydraulic system of the present invention, spring strut and plunger can also be removed, pressed
Force control device is overflow valve；Interface channel is not provided on guide rod, guide rod and plunger are provided separately；Guide rod is piston
Bar, guide rod guiding are assemblied on valve body, and guide rod spring is set between guide rod and valve body；The unlatching pressure of guide rod spring
Power is more than the Opening pressure of overflow valve in itself；When hydraulic system is more than the active force of guide rod the active force of guide rod spring
When, guide rod moves up, and the plug for being set to guiding boom end is detached with overflow valve inlet, and plug is in open position, overflow valve
Inlet is opened, and overflow valve is started to work；After the pressure reduction of hydraulic system, under guide rod is under the action of the guide rod spring
It moves, plug, which comes back to, blocks position, and overflow valve inlet is closed；Meanwhile overflow valve is also switched off under the action of returning spring.
The specific embodiment of the hydraulic system of the present invention, including hydraulic pump, hydraulic circuit and pressure control device, in this reality
It applies in example in addition to pressure control device, the other parts or component of hydraulic system are the prior art, are not repeated to illustrate；Pressure
The structure of force control device is identical with the structure of any embodiment of the pressure control device of the invention described above, is not repeated
It is bright.
Claims (9)
1. pressure control device, including overflow valve, it is characterised in that：The pressure control device includes valve body and valve seat, valve body
It is installed on valve seat by screw, the valve seat is equipped with the mounting hole extended up and down, and overflow valve base is inserted into the installation
In hole, overflow valve is installed on overflow valve base, overflow valve includes relief valve spool and resetting spring, on the overflow valve base
Equipped with feed pathway, relief valve spool and the lower mouth of the feed pathway on overflow valve base are engaged, overflow valve base into
The place suitable for reading of liquid channel is equipped with plug, and the pressure control device further includes to provide towards overflow valve base the plug
Feed pathway active force suitable for reading elastic pressuring clamping device, the plug have under the action of elastic pressuring clamping device with overflow
The closure position suitable for reading fitted closely of the feed pathway of valve base is flowed, plug also has under hydraulic system pressure effect, plug
Overcome the active force of elastic pressuring clamping device and act, make the open position of the opening suitable for reading of the feed pathway of overflow valve base；Elasticity
The Opening pressure of pressing device is more than the Opening pressure of overflow valve itself.
2. pressure control device according to claim 1, it is characterised in that：It is oriented on valve body and is equipped with plunger, on plunger
Be equipped with guide rod equipped with being oriented to along the axially extending guide groove of plunger, in guide groove, guide rod it is matched with guide groove
Guide rod spring is equipped between one end and guiding groove bottom, the plug is set to the other end of guide rod；The elastic compression
Device is set to the top of plunger, and elastic pressuring clamping device includes spring strut, and spring strut is set to above valve body, is equipped in spring strut
Push rod is equipped with push rod spring on push rod, and the lower end of push rod is used for and piston contact stress；Guide rod is equipped with stop section, leads
The stop part coordinated with the stop section on guide rod along guide rod axial direction block is equipped with to slot.
3. pressure control device according to claim 2, it is characterised in that：Guide sleeve is equipped with above valve body, spring strut leads to
It crosses guide sleeve to be assemblied on valve body, the peripheral surface of guide sleeve is equipped with annular flange, and the bottom of spring strut is equipped on guide sleeve
Flange installation installation step, the plunger guide is assemblied on guide sleeve, and the mating surface of plunger and guide sleeve is equipped with close
Seal.
4. the pressure control device according to Claims 2 or 3, it is characterised in that：The push rod is inverted T-bar, is pushed away
Steel ball is equipped between bar and plunger, is respectively equipped on the bottom surface of push rod and the top surface of plunger and the recessed of positioning is contacted with the steel ball
Slot.
5. the pressure control device according to Claims 2 or 3, it is characterised in that：The push rod spring is disk spring.
6. the pressure control device according to Claims 2 or 3, it is characterised in that：The guide rod is the reducing of two-part
Bar, there is a transition face between the major diameter section and path section of guide rod, the transition face forms the stop section of guide rod, guide rod it is big
Diameter section is assemblied in guide groove, and the stop part is the baffle ring being set on guide groove；Guide rod major diameter section end and guide groove
The corresponding mounting hole being equipped with for the installation of guide rod spring in bottom, the plug is set to the end of the path section of guide rod.
7. pressure control device according to claim 6, it is characterised in that：The top of guide rod major diameter section is in guide groove
Rodless cavity, the lower section of guide rod major diameter section is rod chamber in guide groove, and guide rod is equipped with communicating passage, and interface channel makes have bar
Chamber is connected with rodless cavity.
8. pressure control device according to claim 6, it is characterised in that：The plug includes gasket and plug screw, institute
Plug screw spinning is stated in guide rod path section end, the gasket is assemblied between plug screw bottom surface and guide rod path section end face.
9. hydraulic system, including hydraulic pump, hydraulic circuit and pressure control device, pressure control device includes overflow valve, special
Sign is：The pressure control device is 1 to 8 any one of them pressure control device of the claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840575.3A CN106402071B (en) | 2016-09-22 | 2016-09-22 | Pressure control device and the hydraulic system using the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840575.3A CN106402071B (en) | 2016-09-22 | 2016-09-22 | Pressure control device and the hydraulic system using the device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402071A CN106402071A (en) | 2017-02-15 |
| CN106402071B true CN106402071B (en) | 2018-07-06 |
Family
ID=57998170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610840575.3A Active CN106402071B (en) | 2016-09-22 | 2016-09-22 | Pressure control device and the hydraulic system using the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402071B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533725A (en) * | 2009-03-30 | 2009-09-16 | 浙江大学 | Electrohydraulic servo operating mechanism of high-voltage circuit breaker |
| CN201369292Y (en) * | 2009-01-22 | 2009-12-23 | 河南平高电气股份有限公司 | Mechanical oil pressure switch |
| CN203835848U (en) * | 2014-05-21 | 2014-09-17 | 国网四川省电力公司成都市新都供电分公司 | Electric brake closing valve body |
-
2016
- 2016-09-22 CN CN201610840575.3A patent/CN106402071B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201369292Y (en) * | 2009-01-22 | 2009-12-23 | 河南平高电气股份有限公司 | Mechanical oil pressure switch |
| CN101533725A (en) * | 2009-03-30 | 2009-09-16 | 浙江大学 | Electrohydraulic servo operating mechanism of high-voltage circuit breaker |
| CN203835848U (en) * | 2014-05-21 | 2014-09-17 | 国网四川省电力公司成都市新都供电分公司 | Electric brake closing valve body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402071A (en) | 2017-02-15 |
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