CN110206776A - A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group - Google Patents
A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group Download PDFInfo
- Publication number
- CN110206776A CN110206776A CN201910639626.XA CN201910639626A CN110206776A CN 110206776 A CN110206776 A CN 110206776A CN 201910639626 A CN201910639626 A CN 201910639626A CN 110206776 A CN110206776 A CN 110206776A
- Authority
- CN
- China
- Prior art keywords
- fluid port
- hydraulic fluid
- valve
- directional control
- bit triplet
- 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
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- 238000004134 energy conservation Methods 0.000 title claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 130
- 238000013016 damping Methods 0.000 claims abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 7
- 238000004146 energy storage Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect 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
- F15B13/022—Flow-dividers; Priority valves
-
- 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
- F15B13/024—Pressure relief valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group, valve body including being provided with the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the 4th hydraulic fluid port, check valve, damping plug, sequence valve I, sequence valve II, two-bit triplet pilot operated directional control valve I, the two-bit triplet pilot operated directional control valve II for being mounted on valve body and being connected by corresponding oil duct.The invention patent is suitable for the various hydraulic systems or hydraulic device for having pressure maintaining or accumulation of energy demand, hydraulic system work be can be realized in particular pressure range, and can be avoided energy loss caused by there are high pressure kicks, pressure maintaining or energy-storage pressure section threshold values of a kind of hydraulic pressure maintaining with self-unloading energy conservation valve group are adjustable.
Description
Technical field
It is the present invention relates to hydraulic system or hydraulic device with pressure maintaining requirement and accumulation of energy requirement, in particular to a kind of hydraulic
Pressure maintaining and self-unloading energy conservation valve group.
Background technique
Hydraulic pressure retaining system is frequently with overflow pressure maintaining and accumulation of energy pressure maintaining, and wherein overflow pressure maintaining energy loss is big, especially uncomfortable
The big quantitative system of traffic requirement is closed, accumulation of energy pressure maintaining generallys use electrichydraulic control accumulation of energy pressure maintaining and off-load, such system reliability
Low, system complicated composition, system cost are high.In addition, hydraulic energy-accumulating system equally exist the phenomenon similar with pressure-retaining system or
High pressure kicks accumulation of energy or the handover control system of control accumulation of energy and off-load are complicated and at high cost, reliability is low.
Summary of the invention
The purpose of the present invention is exactly the shortcoming being directed in the presence of the above-mentioned prior art and provides a kind of hydraulic pressure maintaining
With self-unloading energy conservation valve group.The present invention has the function of stablizing or system pressure is kept to work in particular range, is also used as
The control of energy-storage system and filling liquid, are maintained at hydraulic system working pressure in particular range, while pressure maintaining period does not overflow
Stream loss.
The purpose of the present invention can be realized by following technique measures:
Hydraulic pressure maintaining of the invention and self-unloading energy conservation valve group include be provided with the first hydraulic fluid port P, the second hydraulic fluid port A, third hydraulic fluid port T,
The valve body of 4th hydraulic fluid port R, it is the check valve for being mounted on valve body and being connected by corresponding oil duct, damping plug, sequence valve I (3), suitable
Sequence valve II, two-bit triplet pilot operated directional control valve I, two-bit triplet pilot operated directional control valve II；Wherein, the first hydraulic fluid port P respectively with two
II hydraulic fluid port 1 of threeway pilot operated directional control valve, the connection of II hydraulic fluid port 4 of two-bit triplet pilot operated directional control valve；II hydraulic fluid port 2 of two-bit triplet pilot operated directional control valve
It is connected to check valve hydraulic fluid port 1；II hydraulic fluid port 3 of two-bit triplet pilot operated directional control valve is connected to the second hydraulic fluid port A, II hydraulic fluid port 1 of sequence valve respectively,
And it is connected to by damping plug with I hydraulic fluid port 1 of sequence valve；II hydraulic fluid port 5 of two-bit triplet pilot operated directional control valve respectively with I hydraulic fluid port 2, two of sequence valve
I hydraulic fluid port 1 of position threeway pilot operated directional control valve is connected to；Third hydraulic fluid port T is connected to check valve hydraulic fluid port 2；I hydraulic fluid port 3 of sequence valve respectively and sequence
II hydraulic fluid port 3 of valve, I hydraulic fluid port 2 of two-bit triplet pilot operated directional control valve, the 4th hydraulic fluid port R connection；II hydraulic fluid port 2 of sequence valve respectively with two-bit triplet
I hydraulic fluid port 3 of pilot operated directional control valve, the connection of I hydraulic fluid port 4 of two-bit triplet pilot operated directional control valve.
Heretofore described sequence valve I, sequence valve II are the type sequence valve that leaks；The two-bit triplet pilot operated directional control valve I is
Remote control two-bit triplet reversal valve with compensation.
Beneficial effects of the present invention are as follows:
1, valve group of the invention being capable of self-identifying performance loop pressure, adaptive switched supply, it is ensured that performance loop is in setting pressure model
Interior work is enclosed, for whole process not by external intervention, system controls high reliablity.
2, valve group of the invention, which has, is higher than setting pressure automatic deloading, when operating pressure is higher than the setting upper limit, control valve
Group supply oil sources automatic deloading, when avoiding energy loss, the system temperature rise of system high pressure overflow generation, while avoiding hydraulic pump long
Between high-pressure work, improve the service life of hydraulic pump.
3, valve group of the invention has pressure maintaining upper limit threshold values and lower limit threshold values adjustable, meets the function of different equipments and system
With performance requirement.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Specific embodiment
The present invention is further described below with reference to embodiment (attached drawing):
As shown in Figure 1, hydraulic pressure maintaining of the invention and self-unloading energy conservation valve group include be provided with the first hydraulic fluid port P, the second hydraulic fluid port A,
The valve body of third hydraulic fluid port T, the 4th hydraulic fluid port R, the check valve 1 for being mounted on valve body and being connected by corresponding oil duct, damping plug 2,
Sequence valve I 3, sequence valve II 4, two-bit triplet pilot operated directional control valve I 5, two-bit triplet pilot operated directional control valve II 6；Wherein, first oil
Mouth P is connected to II 6 hydraulic fluid port 1 of two-bit triplet pilot operated directional control valve, II 6 hydraulic fluid port 4 of two-bit triplet pilot operated directional control valve respectively；Two-bit triplet liquid
Control II 6 hydraulic fluid port 2 of reversal valve is connected to 1 hydraulic fluid port 1 of check valve；II 6 hydraulic fluid port 3 of two-bit triplet pilot operated directional control valve respectively with the second hydraulic fluid port A,
II 4 hydraulic fluid port 1 of sequence valve is connected to and is connected to by damping plug 2 with I 3 hydraulic fluid port 1 of sequence valve；II 6 hydraulic fluid port of two-bit triplet pilot operated directional control valve
5 are connected to I 3 hydraulic fluid port 2 of sequence valve, I 5 hydraulic fluid port 1 of two-bit triplet pilot operated directional control valve respectively；Third hydraulic fluid port T and 1 hydraulic fluid port 2 of check valve connect
It is logical；I 3 hydraulic fluid port 3 of sequence valve is connected to II 4 hydraulic fluid port 3 of sequence valve, I 5 hydraulic fluid port 2 of two-bit triplet pilot operated directional control valve, the 4th hydraulic fluid port R respectively；
II 4 hydraulic fluid port 2 of sequence valve is connected to I 5 hydraulic fluid port 3 of two-bit triplet pilot operated directional control valve, I 5 hydraulic fluid port 4 of two-bit triplet pilot operated directional control valve respectively.
Heretofore described sequence valve I 3, sequence valve II 4 are the type sequence valve that leaks；The two-bit triplet pilot operated directional control valve I 5
For the remote control two-bit triplet reversal valve with compensation.
The course of work of the invention is following (referring to Fig. 1):
Original state, when the second hydraulic fluid port A operating pressure is lower than pressure maintaining lower limit, two-bit triplet pilot operated directional control valve I 5, two-bit triplet
Pilot operated directional control valve II 6 works left position, right position respectively, i.e., II 6 hydraulic fluid port 5 of two-bit triplet pilot operated directional control valve with I 3 hydraulic fluid port 2 of sequence valve,
I 5 hydraulic fluid port 1 of two-bit triplet pilot operated directional control valve, I 5 hydraulic fluid port 2 of two-bit triplet pilot operated directional control valve, the 4th hydraulic fluid port R are connected to oil return box, hydraulic
Oil enters II 6 hydraulic fluid port 4 of two-bit triplet pilot operated directional control valve and II 6 hydraulic fluid port of two-bit triplet pilot operated directional control valve 1, two from the first hydraulic fluid port P
II 6 hydraulic fluid port 2 of threeway pilot operated directional control valve, 1 hydraulic fluid port 2 of check valve, under the action of check valve 1 opens pressure in advance, hydraulic fluid pressure is increased,
Hydraulic oil into II 6 hydraulic fluid port 4 of two-bit triplet pilot operated directional control valve pushes II 6 commutation work of two-bit triplet pilot operated directional control valve on a left side
Position, II 6 hydraulic fluid port 1 of two-bit triplet pilot operated directional control valve are connected to II 6 hydraulic fluid port 3 of two-bit triplet pilot operated directional control valve, and hydraulic oil is from two three
Logical II 6 hydraulic fluid port 3 of pilot operated directional control valve reaches sequence valve I 3 and sets into the second hydraulic fluid port A with the increase of the second hydraulic fluid port A operating pressure
When fixed threshold pression, I 3 hydraulic fluid port 1 of sequence valve is connected to I 3 hydraulic fluid port 2 of sequence valve, and hydraulic oil is through the second hydraulic fluid port A, damping plug 2, suitable
I 3 hydraulic fluid port 1 of sequence valve, I 3 hydraulic fluid port 2 of sequence valve, 5 hydraulic fluid port 1 of two-bit triplet pilot operated directional control valve, 5 hydraulic fluid port 12 of two-bit triplet pilot operated directional control valve,
4th hydraulic fluid port R oil return box, two-bit triplet pilot operated directional control valve II 6 do not commutate, and continue to increase with the second hydraulic fluid port A operating pressure,
When hydraulic working oil pressure is greater than the pressure upper limit that sequence valve II 4 is set, II 4 hydraulic fluid port 1 of sequence valve and II 4 hydraulic fluid port 2 of sequence valve
Connection, hydraulic oil enter 5 oil of two-bit triplet pilot operated directional control valve through the second hydraulic fluid port A, II 4 hydraulic fluid port 1 of sequence valve, II 4 hydraulic fluid port 2 of sequence valve
Mouth 3 and 5 hydraulic fluid port 4 of two-bit triplet pilot operated directional control valve push 5 commutation work of two-bit triplet pilot operated directional control valve in right position, two-bit triplet
5 hydraulic fluid port 3 of pilot operated directional control valve is connected to 5 hydraulic fluid port 1 of two-bit triplet pilot operated directional control valve, II 6 hydraulic fluid port 5 and two of two-bit triplet pilot operated directional control valve
Pressure at 5 hydraulic fluid port 1 of position threeway pilot operated directional control valve, I 3 hydraulic fluid port 2 of sequence valve is equal to rapidly pressure at the second hydraulic fluid port A, pushes two
II 6 commutation work of threeway pilot operated directional control valve makes the hydraulic oil entered from the first hydraulic fluid port P through two-bit triplet pilot operated directional control valve in right position
II 6 hydraulic fluid ports 1, II 6 hydraulic fluid port 2 of two-bit triplet pilot operated directional control valve, 1 hydraulic fluid port 1 of check valve, 1 hydraulic fluid port 2 of check valve, third hydraulic fluid port T oil return
Case, pressure is stablized within the scope of the upper limit of setting and threshold pression at the second hydraulic fluid port A, this state does not change, at the second hydraulic fluid port A
When pressure is lower than the lower limit value that sequence valve I 3 is set, sequence valve I 3 resets, and I 3 hydraulic fluid port 1 of sequence valve and I 3 hydraulic fluid port 2 of sequence valve are obstructed,
Pressure at 5 hydraulic fluid port 1 of II 6 hydraulic fluid port 5 of two-bit triplet pilot operated directional control valve and two-bit triplet pilot operated directional control valve, I 3 hydraulic fluid port 2 of sequence valve with
5 hydraulic fluid port 1 of two-bit triplet pilot operated directional control valve is revealed to the 4th hydraulic fluid port R and pressure release, and 5 commutation work of two-bit triplet pilot operated directional control valve is made to exist
Left position, and recycled by the above working principle.
Claims (3)
1. a kind of hydraulic pressure maintaining and self-unloading energy conservation valve group, it is characterised in that: it includes being provided with the first hydraulic fluid port P, the second hydraulic fluid port
A, the valve body of third hydraulic fluid port T, the 4th hydraulic fluid port R, the check valve (1) for being mounted on valve body and being connected by corresponding oil duct damp
Fill in (2), sequence valve I (3), sequence valve II (4), two-bit triplet pilot operated directional control valve I (5), two-bit triplet pilot operated directional control valve II (6)；
Wherein, the first hydraulic fluid port P respectively with two-bit triplet pilot operated directional control valve II (6) hydraulic fluid port 1, two-bit triplet pilot operated directional control valve II (6)
Hydraulic fluid port 4 is connected to；Two-bit triplet pilot operated directional control valve II (6) hydraulic fluid port 2 is connected to check valve (1) hydraulic fluid port 1；Two-bit triplet pilot operated directional control valve
II (6) hydraulic fluid port 3 is connected to the second hydraulic fluid port A, sequence valve II (4) hydraulic fluid port 1 respectively and by damping plug (2) and sequence valve I (3) oil
Mouth 1 is connected to；Two-bit triplet pilot operated directional control valve II (6) hydraulic fluid port 5 respectively with sequence valve I (3) hydraulic fluid port 2, two-bit triplet pilot operated directional control valve I
(5) hydraulic fluid port 1 is connected to；Third hydraulic fluid port T is connected to check valve (1) hydraulic fluid port 2；Sequence valve I (3) hydraulic fluid port 3 is oily with sequence valve II (4) respectively
Mouth 3, two-bit triplet pilot operated directional control valve I (5) hydraulic fluid port 2, the 4th hydraulic fluid port R connection；Sequence valve II (4) hydraulic fluid port 2 respectively with two-bit triplet
Pilot operated directional control valve I (5) hydraulic fluid port 3, two-bit triplet pilot operated directional control valve I (5) hydraulic fluid port 4 are connected to.
2. hydraulic pressure maintaining according to claim 1 and self-unloading energy conservation valve group, it is characterised in that: the sequence valve I (3),
Sequence valve II (4) is the type sequence valve that leaks.
3. hydraulic pressure maintaining according to claim 1 and self-unloading energy conservation valve group, it is characterised in that: the two-bit triplet hydraulic control
Reversal valve I (5) is the remote control two-bit triplet reversal valve with compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910639626.XA CN110206776A (en) | 2019-07-16 | 2019-07-16 | A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910639626.XA CN110206776A (en) | 2019-07-16 | 2019-07-16 | A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110206776A true CN110206776A (en) | 2019-09-06 |
Family
ID=67797671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910639626.XA Pending CN110206776A (en) | 2019-07-16 | 2019-07-16 | A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110206776A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3319533A1 (en) * | 1983-05-28 | 1984-11-29 | Klöckner-Humboldt-Deutz AG, 5000 Köln | HYDRAULIC CONTROL SYSTEM FOR THE STEERING AND WORKING HYDRAULICS ON VEHICLES |
| CN101994727A (en) * | 2010-12-29 | 2011-03-30 | 郑州宇通重工有限公司 | Balance valve having two-stage pressure buffering protection function |
| US20160047397A1 (en) * | 2013-03-15 | 2016-02-18 | Stored Energy Solutions Inc. | Hydraulic hybrid systems, components, and configurations |
| CN205388056U (en) * | 2015-12-11 | 2016-07-20 | 重庆纳川山隅重工设备有限公司 | Rock drilling machine's self -adaptation valves |
| JP2018105442A (en) * | 2016-12-27 | 2018-07-05 | 株式会社田口クリエイト | Combined operation type attachment for construction machine |
| CN108317119A (en) * | 2018-04-09 | 2018-07-24 | 徐州燕大传动与控制技术有限公司 | A kind of proportional multi-way valve that hydraulic control inlet and outlet throttling side can be separately adjustable |
| CN210423203U (en) * | 2019-07-16 | 2020-04-28 | 郑州宇通重工有限公司 | Hydraulic pressure maintaining and self-unloading energy-saving valve group |
-
2019
- 2019-07-16 CN CN201910639626.XA patent/CN110206776A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3319533A1 (en) * | 1983-05-28 | 1984-11-29 | Klöckner-Humboldt-Deutz AG, 5000 Köln | HYDRAULIC CONTROL SYSTEM FOR THE STEERING AND WORKING HYDRAULICS ON VEHICLES |
| CN101994727A (en) * | 2010-12-29 | 2011-03-30 | 郑州宇通重工有限公司 | Balance valve having two-stage pressure buffering protection function |
| US20160047397A1 (en) * | 2013-03-15 | 2016-02-18 | Stored Energy Solutions Inc. | Hydraulic hybrid systems, components, and configurations |
| CN205388056U (en) * | 2015-12-11 | 2016-07-20 | 重庆纳川山隅重工设备有限公司 | Rock drilling machine's self -adaptation valves |
| JP2018105442A (en) * | 2016-12-27 | 2018-07-05 | 株式会社田口クリエイト | Combined operation type attachment for construction machine |
| CN108317119A (en) * | 2018-04-09 | 2018-07-24 | 徐州燕大传动与控制技术有限公司 | A kind of proportional multi-way valve that hydraulic control inlet and outlet throttling side can be separately adjustable |
| CN210423203U (en) * | 2019-07-16 | 2020-04-28 | 郑州宇通重工有限公司 | Hydraulic pressure maintaining and self-unloading energy-saving valve group |
Non-Patent Citations (1)
| Title |
|---|
| 成红梅;: "卸荷回路的设计和运行", 煤矿机械, no. 06, pages 948 - 950 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20240712 |