CN104235098B - Fluid pressure valve device - Google Patents
Fluid pressure valve device Download PDFInfo
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- CN104235098B CN104235098B CN201310716430.9A CN201310716430A CN104235098B CN 104235098 B CN104235098 B CN 104235098B CN 201310716430 A CN201310716430 A CN 201310716430A CN 104235098 B CN104235098 B CN 104235098B
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- runner
- valve
- oil pocket
- oil
- valve body
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Abstract
The invention discloses a kind of fluid pressure valve device, including valve body, for detecting the check valve whether pressure of oil-feed cavity volume be highest load pressure, recuperation valve, check-valves and being arranged on body cavity having can horizontally slip commutation or the main valve of neutrality, described main valve is divided into oil return T runner valve body, A runner, B runner, fuel-displaced runner and oil-feed runner, it is provided with piston in described valve body, the effective end face of described piston end face effective with spool is of substantially equal, fluid under pressure is by controlling pressure differential produced by the open area of its fluid flow size, feed back and control the delivery flow of hydraulic pump, as pressure reduction is little, then strengthen delivery flow, otherwise, then reduce flow, hydraulic pump is made to need delivery flow by loop, reach energy-conservation effect.
Description
Technical field
The present invention relates to kind to relate to choose highest load pressure compensate and control variables pump
Hydraulic control valve, especially relates to a kind of fluid pressure valve device.
Background technology
In general hydraulic circuit, hydraulic pump emission path configures multiple hydraulicdirectional control valves, and by cutting
Change hydraulicdirectional control valve and supply fluid under pressure to each executing agency.To multiple execution this while
During mechanism's supply fluid under pressure, liquid can be preferential to the executing agency of low-load pressure, and therefore
Reduce or stop the executing agency of supply high capacity.
Current existing hydraulic circuit is all configuration pressure between hydraulicdirectional control valve and executing agency
Force compensating valve, detects highest load pressure, the highest load pressure in the most all executing agencies,
By the highest load pressure detected being put on each pressure-compensated valve, so that each hydraulic pressure
Diverter valve outlet pressure unanimously brings up to of substantially equal with highest load pressure, and makes each whereby
During hydraulicdirectional control valve commutation work simultaneously, the fluid under pressure commutated by each hydraulic pressure is proportional to it
The allotment ratio of open area supply each executing agency.But existing hydraulic valve pressure
Difference instability, it is impossible to the flow needed for making hydraulic pump discharge by loop, its energy-saving effect is poor.
Summary of the invention
The problem that present invention aim to address above-mentioned existence, it is provided that a kind of simple in construction, low one-tenth
This, energy-saving and emission-reduction, a kind of fluid pressure valve device that stability is high.
The technical scheme realizing the object of the invention is: a kind of fluid pressure valve device, including valve body, use
Whether the pressure in detection oil-feed cavity volume is the check valve of highest load pressure, recuperation valve, non-return
Valve and being arranged on body cavity having can horizontally slip commutation or the main valve of neutrality, described
Main valve is divided into oil return T runner, A runner, B runner, fuel-displaced runner and oil-feed runner valve body,
Piston, the effective end face of described piston and the effective end face of spool on recuperation valve it is provided with in described valve body
Of substantially equal.
Main valve described in technique scheme includes first segment chute, second section chute, the 3rd throttling
Groove, the 4th throttling channel, the 5th throttling channel and the 6th throttling channel, described first segment chute and second
Throttling channel controls to flow into from P mouth the uninterrupted of oil-feed cavity volume to the left or to the right respectively.
3rd throttling channel described in technique scheme set up or block on the left of valve body the second oil pocket with
The connection of left side the 3rd oil pocket, described left side the 3rd oil pocket is communicated to T through left side the second runner
Hydraulic fluid port, left side the first oil pocket and left side second oil of valve body is set up or blocked to described 4th throttling channel
The connection in chamber, described left side the second oil pocket is communicated to A hydraulic fluid port through left side first flow.
5th throttling channel described in technique scheme is set up or blocks right side second oil pocket of valve body
Connecting with right side the 3rd oil pocket, right side the second oil pocket is communicated to B hydraulic fluid port through right side first flow,
6th throttling channel is vertical or blocks the first oil pocket and the connection of right side the second oil pocket, right side on the right side of valve body
First oil pocket is communicated to T hydraulic fluid port through right side the second runner.
Check valve described in technique scheme has steel ball, and described steel ball is arranged on the first check valve
In vestibule, screw plug is arranged on the first unidirectional valve opening, and oil-feed cavity volume is inputted by the second unidirectional valve opening
To a LS runner and the 2nd LS runner.
Recuperation valve described in technique scheme has spool, and described spool is set up or blocks valve body
Left side the 4th oil pocket and left side the 3rd runner and the connection of right side the 3rd runner；Oneth LS runner and
2nd LS runner is input to oil pocket by hole, and the pressure of described oil pocket acts on described piston,
Described left side the 4th oil pocket pressure acts on spool, and described left side the 4th oil pocket is by spool
Throttle orifice connect with cavity volume, described cavity volume successively with left side the 3rd runner, right side the 3rd runner,
Right side the 3rd oil pocket connects with left side the first oil pocket.
In technique scheme, when chamber pressure raises suddenly, the spool conical surface on spool and valve
The valve body conical surface one check-valves of composition on body.
First hole of valve body described in technique scheme is arranged on described spool, and the second hole is installed
On valve pocket, described first hole and the second hole and valve pocket center line are positioned on same central axis.
Oil return T runner described in technique scheme is by T hydraulic fluid port, right side the first oil pocket, left side
Three oil pockets, left side the second runner and right side the second runner composition, A runner is by left side the second oil
Chamber, left side first flow 23 and A hydraulic fluid port composition；Fuel-displaced runner is right side the 3rd oil pocket, left side
First oil pocket, left side the 3rd runner, right side the 3rd runner and oil pocket composition；B runner is by the right side
Side the second oil pocket, right side first flow and B hydraulic fluid port composition, oil-feed runner be by oil-feed cavity volume and
Left side the 4th oil pocket composition.
After using technique scheme, the present invention has following positive effect: the present invention is to add
Press liquid is by controlling pressure differential produced by the open area of its fluid flow size, and feedback is also
Control the delivery flow of hydraulic pump, as pressure reduction is little, then strengthen delivery flow, otherwise, then reduce
Flow, makes hydraulic pump need delivery flow by loop, reaches energy-conservation effect.
Accompanying drawing explanation
It is clearly understood to make present disclosure be easier to, below according to specific embodiment
And combine accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the local A-A sectional view of Fig. 1；
Reference: 1, valve body, 2, T hydraulic fluid port, 3, P mouth, 4, main valve, 5, right side
One oil pocket, 6, right side the second oil pocket, 7, right side the 3rd oil pocket, 8, screw plug, 9, steel ball,
10, the second unidirectional valve opening, 11, oil-feed cavity volume, 12, left side the first oil pocket, 13, left side
Two oil pockets, 14, left side the 3rd oil pocket, 15, first segment chute, 16, second section chute, 17,
Left side the 3rd runner, 18, spool, 20, piston, 21, right side the 3rd runner, 22, right side
First flow, 23, left side first flow, 24, left side the 4th oil pocket, 30, oil pocket, 31,
Valve pocket, the 32, the 3rd throttling channel, the 33, the 4th throttling channel, the 34, the 5th throttling channel, 35,
Six throttling channels, the 38, the oneth LS runner, 40, throttle orifice, 41, the valve body conical surface, 42, cavity volume,
45, the 2nd LS runner, 46, the spool conical surface, 48, left side the second runner, 49, right side second
Runner, the 50, first unidirectional valve opening, 51, inner chamber, the 52, first hole, the 53, second hole.
Detailed description of the invention
As shown in Fig. 1 and Fig. 2, a kind of fluid pressure valve device, including valve body 1, for detecting oil-feed
Whether the pressure of cavity volume 11 is the check valve of highest load pressure, recuperation valve, check-valves and peace
It is contained on valve body 1 inner chamber 51 and there is can horizontally slip commutation or the main valve 4 of neutrality, main valve 4
Valve body 1 is divided into oil return T runner, A runner, B runner, fuel-displaced runner and oil-feed runner, valve body
Being provided with piston 20 in 1, the effective end face of piston 20 end face effective with spool 18 is of substantially equal.
As shown in Figure 1, main valve 4 includes first segment chute 15, second section chute the 16, the 3rd throttling
Groove the 32, the 4th throttling channel the 33, the 5th throttling channel 34 and the 6th throttling channel 35, first segment chute 15
Control to flow into from P mouth 3 stream of oil-feed cavity volume 11 to the left or to the right respectively with second section chute 16
Amount size.The second oil pocket 13 and left side the 3rd on the left of valve body 1 are set up or blocked to 3rd throttling channel 32
The connection of oil pocket 14, left side the 3rd oil pocket 14 is communicated to T hydraulic fluid port 2 through left side the second runner 48,
Left side the first oil pocket 12 and left side second oil pocket 13 of valve body 1 is set up or blocked to 4th throttling channel 33
Connection, left side the second oil pocket 13 is communicated to A hydraulic fluid port through left side first flow 23.Section five,
Chute 34 is set up or is blocked right side second oil pocket 6 of valve body 1 and connects with right side the 3rd oil pocket 7, right
Side the second oil pocket 6 is communicated to B hydraulic fluid port through right side first flow 22, and the 6th throttling channel 35 is vertical or hinders
First oil pocket 5 and the connection of right side the second oil pocket 6 on the right side of disconnected valve body 1, right side the first oil pocket 5 passes through
Right side the second runner 49 is communicated to T hydraulic fluid port 2.
Check valve has steel ball 9, and steel ball 9 is arranged in the first unidirectional valve opening 50 chamber, and screw plug 8 is pacified
Being contained in the first unidirectional valve opening 50, oil-feed cavity volume 11 is input to a LS by the second unidirectional valve opening 10
Runner 38 and the 2nd LS runner 45.When whether the pressure surveying oil-feed cavity volume 11 is high capacity pressure
Power, opens steel ball 9 with this logic "Yes" or " non-", pressure signal uni-directionally by entering
Oil cavity volume 11 is input to LS runner 38 and a 2nd LS runner 45 by the second unidirectional valve opening 10.
Recuperation valve has spool 18, and left side the 4th oil pocket 24 of valve body 1 is set up or blocked to spool 18
With left side the 3rd runner 17 and the connection of right side the 3rd runner 21；Oneth LS runner 38 and the 2nd LS
Runner 45 is input to oil pocket 30 by hole, and the pressure of oil pocket 30 acts on piston 20, left side
Four oil pocket 24 pressure act on spool 18, and left side the 4th oil pocket 24 is by the throttling on spool 18
Hole 40 connects with cavity volume 42, cavity volume 42 successively with left side the 3rd runner 17, right side the 3rd runner 21,
Right side the 3rd oil pocket 7 connects with left side the first oil pocket 12.The such as pressure of oil pocket 30 acts on work
It is basic that plug 20 effective end faces and the pressure of left side the 4th oil pocket 24 act on the effective end face of spool 18
Equal, therefore piston 20 is delivered to the pressure size of oil pocket 30 by being rigidly connected with spool 18
On the effective end face of spool 18 so that the pressure of left side the 4th oil pocket 24 is increased to highest load pressure
Size just can make spool 18 move upward, and the liquid of left side the 4th oil pocket 24 just can pass through spool
Throttle orifice 40 on 18 enters cavity volume 42.When cavity volume 42 pressure raises suddenly, on spool 18
The conical surface 46 forms a check-valves with the conical surface 41 on valve body 1.First hole 52 of valve body 1 is arranged on
On spool 18, the second hole 53 is installed on valve pocket 31, the first hole 52 and the second hole 53 and valve pocket 31
Center line is positioned on same central axis.
Oil return T runner is by T hydraulic fluid port 2, right side the first oil pocket 5, left side the 3rd oil pocket 14, left side
Second runner 48 and right side the second runner 49 form, and A runner is by left side the second oil pocket 13, a left side
Side first flow 23 and A hydraulic fluid port forms；Fuel-displaced runner is right side the 3rd oil pocket 7, left side the first oil
Chamber 12, left side the 3rd runner 17, right side the 3rd runner 21 and cavity volume 42 form；B runner be by
Right side the second oil pocket 6, right side first flow 22 and B hydraulic fluid port composition, oil-feed runner is to be held by oil-feed
Chamber 11 and left side the 4th oil pocket 24 form.
Particular embodiments described above, to the purpose of the present invention, technical scheme and beneficial effect
Further described, be it should be understood that and the foregoing is only the concrete of the present invention
Embodiment, is not limited to the present invention, all within the spirit and principles in the present invention,
Any modification, equivalent substitution and improvement etc. done, should be included in protection scope of the present invention
Within.
Claims (9)
1. a fluid pressure valve device, it is characterised in that: include valve body (1), be used for detecting into
Whether the pressure of oil cavity volume (11) is the check valve of highest load pressure, recuperation valve, check-valves
And be arranged on valve body (1) inner chamber (51) there is can horizontally slip commutation or neutrality
Main valve (4), described main valve (4) is divided into oil return T runner, A runner, B valve body (1)
Runner, fuel-displaced runner and oil-feed runner, be provided with piston (20) in described valve body (1), described
Piston (20) effectively end face is of substantially equal with the effectively end face of the spool (18) on recuperation valve.
A kind of fluid pressure valve device the most according to claim 1, it is characterised in that: described master
Valve (4) include first segment chute (15), second section chute (16), the 3rd throttling channel (32),
4th throttling channel (33), the 5th throttling channel (34) and the 6th throttling channel (35), described first
Throttling channel (15) and second section chute (16) control respectively from P mouth (3) flow into the left or to
The uninterrupted of right oil-feed cavity volume (11).
A kind of fluid pressure valve device the most according to claim 2, it is characterised in that: described the
Valve body (1) left side the second oil pocket (13) and left side the are set up or blocked to three throttling channels (32)
The connection of three oil pockets (14), described left side the 3rd oil pocket (14) is through left side the second runner (48)
Being communicated to T hydraulic fluid port (2), a left side for valve body (1) is set up or blocked to described 4th throttling channel (33)
Side the first oil pocket (12) and the connection in left side the second oil pocket (13), described left side the second oil pocket
(13) it is communicated to A hydraulic fluid port through left side first flow (23).
A kind of fluid pressure valve device the most according to claim 2, it is characterised in that: described the
The right side the second oil pocket (6) of valve body (1) and right side the is set up or blocked to five throttling channels (34)
Three oil pockets (7) connect, and right side the second oil pocket (6) connects through right side first flow (22)
To B hydraulic fluid port, valve body (1) right side the first oil pocket (5) is set up or blocked to the 6th throttling channel (35)
With the connection on right side the second oil pocket (6), right side the first oil pocket (5) is through right side the second runner
(49) T hydraulic fluid port (2) it is communicated to.
A kind of fluid pressure valve device the most according to claim 1, it is characterised in that: described list
Having steel ball (9) to valve, described steel ball (9) is arranged in the first unidirectional valve opening (50) chamber,
Screw plug (8) is arranged on the first unidirectional valve opening (50), and oil-feed cavity volume (11) is unidirectional by second
Valve opening (10) is input to a LS runner (38) and the 2nd LS runner (45).
A kind of fluid pressure valve device the most according to claim 1, it is characterised in that: described benefit
Repaying valve and have spool (18), the left side of valve body (1) is set up or blocked to described spool (18)
Four oil pockets (24) and left side the 3rd runner (17) and the connection on right side the 3rd runner (21)；
Oneth LS runner (38) and the 2nd LS runner (45) are input to oil pocket (30) by hole, institute
The pressure stating oil pocket (30) acts on described piston (20), described left side the 4th oil pocket (24)
Pressure acts on spool (18), and described left side the 4th oil pocket (24) passes through spool (18)
On throttle orifice (40) connect with cavity volume (42), described cavity volume (42) successively with left side
Three runners (17), right side the 3rd runner (21), right side the 3rd oil pocket (7) and left side first
Oil pocket (12) connects.
A kind of fluid pressure valve device the most according to claim 6, it is characterised in that: described appearance
When chamber (42) pressure raises suddenly, the spool conical surface (46) on spool (18) and valve body (1)
On the valve body conical surface (41) composition one check-valves.
A kind of fluid pressure valve device the most according to claim 1, it is characterised in that: described valve
First hole (52) of body (1) is arranged on described spool (18), and the second hole (53) pacify
On dress valve pocket (31), in described first hole (52) and the second hole (53) and valve pocket (31)
Heart line is positioned on same central axis.
9. according to a kind of fluid pressure valve device described in claim 1 or 8, it is characterised in that:
Described oil return T runner is by T hydraulic fluid port (2), right side the first oil pocket (5), left side the 3rd oil pocket
(14), left side the second runner (48) and right side the second runner (49) composition, A runner is
It is made up of left side the second oil pocket (13), left side first flow (23) and A hydraulic fluid port；Fuel-displaced stream
Road be by right side the 3rd oil pocket (7), left side the first oil pocket (12), left side the 3rd runner (17),
Right side the 3rd runner (21) and cavity volume (42) composition；B runner be by right side the second oil pocket (6),
Right side first flow (22) and B hydraulic fluid port form, oil-feed runner be by oil-feed cavity volume (11) and
Left side the 4th oil pocket (24) composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716430.9A CN104235098B (en) | 2013-12-23 | 2013-12-23 | Fluid pressure valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716430.9A CN104235098B (en) | 2013-12-23 | 2013-12-23 | Fluid pressure valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235098A CN104235098A (en) | 2014-12-24 |
| CN104235098B true CN104235098B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310716430.9A Active CN104235098B (en) | 2013-12-23 | 2013-12-23 | Fluid pressure valve device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104235098B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504004A (en) * | 2017-09-13 | 2017-12-22 | 江苏恒立液压科技有限公司 | Novel pressure recuperation valve |
| CN108547813B (en) * | 2018-05-02 | 2020-06-19 | 宁波真格液压科技有限公司 | Load-sensitive electromagnetic proportional valve |
| CN109099023B (en) * | 2018-09-29 | 2020-08-21 | 艾肯（江苏）工业技术有限公司 | Balance valve |
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|---|---|---|---|---|
| US3885583A (en) * | 1974-04-22 | 1975-05-27 | Hydraulic Industries | Pressure compensating valve mechanism for hydraulic control valves |
| DE19800720C2 (en) * | 1998-01-12 | 2001-10-31 | Sauer Danfoss Nordborg As Nord | Control valve for a hydraulic motor |
| CN101858368A (en) * | 2010-05-13 | 2010-10-13 | 山东泰丰液压设备有限公司 | Multiple directional control valve system for return oil throttle control with load sensitive pressure compensation |
| CN201786797U (en) * | 2010-09-30 | 2011-04-06 | 李金海 | Excavator load sensitive pressure compensation multi-way valve |
| CN103174697A (en) * | 2013-03-22 | 2013-06-26 | 江苏恒立高压油缸股份有限公司 | Hydraulic valve system with pressure compensation function |
| CN103321978A (en) * | 2012-03-20 | 2013-09-25 | 罗伯特·博世有限公司 | Hydraulic pilot valve arrangement and hydraulic valve arrangement having the same |
| CN203627377U (en) * | 2013-12-23 | 2014-06-04 | 江苏恒立液压有限公司 | Hydraulic valve device |
-
2013
- 2013-12-23 CN CN201310716430.9A patent/CN104235098B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885583A (en) * | 1974-04-22 | 1975-05-27 | Hydraulic Industries | Pressure compensating valve mechanism for hydraulic control valves |
| DE19800720C2 (en) * | 1998-01-12 | 2001-10-31 | Sauer Danfoss Nordborg As Nord | Control valve for a hydraulic motor |
| CN101858368A (en) * | 2010-05-13 | 2010-10-13 | 山东泰丰液压设备有限公司 | Multiple directional control valve system for return oil throttle control with load sensitive pressure compensation |
| CN201786797U (en) * | 2010-09-30 | 2011-04-06 | 李金海 | Excavator load sensitive pressure compensation multi-way valve |
| CN103321978A (en) * | 2012-03-20 | 2013-09-25 | 罗伯特·博世有限公司 | Hydraulic pilot valve arrangement and hydraulic valve arrangement having the same |
| CN103174697A (en) * | 2013-03-22 | 2013-06-26 | 江苏恒立高压油缸股份有限公司 | Hydraulic valve system with pressure compensation function |
| CN203627377U (en) * | 2013-12-23 | 2014-06-04 | 江苏恒立液压有限公司 | Hydraulic valve device |
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| Publication number | Publication date |
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| CN104235098A (en) | 2014-12-24 |
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Address after: 213167 Wujin high tech Industrial Development Zone, Jiangsu Province, No. long hidden Road, No. 99 Applicant after: JIANGSU HENGLI HYDRAULIC CO., LTD. Address before: 213167 Wujin high tech Industrial Development Zone, Jiangsu Province, No. long hidden Road, No. 99 Applicant before: JIANGSU HENGLI HYDRAULIC CO., LTD. |
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