CN102829011B - Double-pump confluence hydraulic loop combined valve and application thereof - Google Patents
Double-pump confluence hydraulic loop combined valve and application thereof Download PDFInfo
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- CN102829011B CN102829011B CN201210297442.8A CN201210297442A CN102829011B CN 102829011 B CN102829011 B CN 102829011B CN 201210297442 A CN201210297442 A CN 201210297442A CN 102829011 B CN102829011 B CN 102829011B
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- valve
- inlet opening
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- feedback signal
- pressure oil
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Abstract
The invention relates to a double-pump confluence hydraulic loop combined valve and an application thereof. A combined valve comprises a valve body, wherein a high-pressure oil input port P1, a high-pressure oil input port P2, a high-pressure oil output port P1', a high-pressure oil output port P2', a feedback signal input port Ls1', a feedback signal input port Ls2', a feedback signal output port Ls1 and a feedback signal output port Ls2 are arranged on the valve body. Besides, an oil return port T, an oil draining port DR and a switching interface X are also arranged. In the application, the high-pressure oil output ports P1' and P2' on the valve body are respectively butt-jointed with input interfaces of load sensitive valves a and b; the high-pressure oil input ports P1 and P2 are respectively butt-jointed with output ports of load sensitive pumps a and b; the feedback signal input ports Ls1' and Ls2' are respectively butt-jointed with feedback oil output ports of the load sensitive valves a and b; the feedback signal output ports Ls1 and Ls2 are respectively butt-jointed with control oil interfaces of the load sensitive pumps a and b; a backflow port T and an overflow port DR are introduced into an oil tank; and the switching interface X is butt-jointed with a switching control oil path or a switching control electric signal.
Description
Technical field
The present invention relates to a kind of mine hydraulic system combination brake switch and proporting and application thereof, be specially a kind of Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting and application thereof.
Technical background
Boom-type roadheader can realize cutting continuously, loading, hauling operation, in the application of coal mine roadway driving, occupy critical positions, and its hydraulic system major part manufacture now commercial city have employed Ioad-sensing control method.
Its hydraulic system adopts a duplex load sensitive pump, is connected respectively with two groups of load-sensitive valves.A wherein hydraulic pump control transport airplane motor and star-wheel motor; The lifting of an other hydraulic pump control two running motors and cutterhead and revolution; During development machine work, transport airplane motor and star-wheel motor operate simultaneously, and cutterhead lifting and revolution are only have an operation in the time of 90%, just have the situation of lifting and revolution action simultaneously once in a while; But the requirement coupling that pump delivery must move according to lifting and revolution simultaneously; Defeated machine motor and star-wheel motor then just meet usage requirement.After such equipment runs a period of time, along with the reduction of pump and moyor, the rotating speed of transport airplane motor and star-wheel motor just returns slack-off, and controls the discharge capacity that half often used by cutterhead lifting and pivotal oil hydraulic pump, and ability can not get performance; And general huge discharge oil hydraulic pump is more much higher than two small displacement oil hydraulic pump costs.
Summary of the invention
Object of the present invention is: solve the problem that in mine hydraulic system, single-pump flow is inadequate, play the ability of duplex pump to greatest extent.
The object of the present invention is achieved like this: a kind of Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting, comprises valve body, it is characterized in that: valve body is provided with high pressure oil inlet opening P
1with high pressure oil inlet opening P
2and the high pressure oil delivery outlet P of correspondence
1' and high pressure oil delivery outlet P
2'; Feedback signal inlet opening Ls
1' and feedback signal inlet opening Ls
2' and the feedback signal delivery outlet Ls of correspondence
1with feedback signal delivery outlet Ls
2; Also be provided with oil return inlet T, unloading port DR and switching interface X, wherein:
High pressure oil inlet opening P
1with high pressure oil inlet opening P
2link up respectively by the relief valve a of internals and relief valve b and oil return inlet T; High pressure oil inlet opening P
1with high pressure oil delivery outlet P
1' between build a two-way plug-in valve a, high pressure oil inlet opening P
2with high pressure oil delivery outlet P
2' between build a two-way plug-in valve b; High pressure oil delivery outlet P
1' and high pressure oil delivery outlet P
2' between build a shuttle valve a; Build a two-way plug-in valve c between the Stress control mouth of two-way plug-in valve a and two-way plug-in valve b, the Stress control mouth of two-way plug-in valve c builds a two position three way directional control valve a; Two position three way directional control valve a, under the control of switching interface X input signal, selects a selection and links up by the oil outlet of shuttle valve a or with unloading port DR, or dock with the Stress control mouth of two-way plug-in valve c;
Feedback signal inlet opening Ls
1' and feedback signal inlet opening Ls
2' between build shuttle valve b, shuttle valve c and shuttle valve d, wherein, shuttle valve b is located immediately at feedback signal inlet opening Ls
1' and feedback signal inlet opening Ls
2' between, shuttle valve c and shuttle valve d is positioned at feedback signal inlet opening Ls after connecting
1' and feedback signal inlet opening Ls
2' between, also build a two position three way directional control valve b, two position three way directional control valve b simultaneously and under the control of switching interface X input signal, select the tandem junction chalaza of a selection shuttle valve c and shuttle valve d or link up with unloading port DR, or link up with the oil outlet of shuttle valve b.
In the inventive solutions: described switching interface X is the switching interface that a road controls two position three way directional control valve a and two position three way directional control valve b simultaneously, or for two-way the switching interface of two position three way directional control valve a and two position three way directional control valve b is controlled respectively.
In the inventive solutions: described switching interface X is for switching hydraulic oil control interface, and described two position three way directional control valve a and two position three way directional control valve b is pilot operated directional control valve.
In the inventive solutions: described switching interface X is for switching electrical signal control interface, and described two position three way directional control valve a and two position three way directional control valve b is electric control reversing valve.
An application for above-mentioned Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting, is characterized in that: the high pressure oil delivery outlet P on valve body
1' dock with load-sensitive valve a input interface, high pressure oil delivery outlet P
2' dock with load-sensitive valve b inlet opening; High pressure oil inlet opening P
1dock with the delivery outlet of load sensitive pump a, high pressure oil inlet opening P
2dock with the delivery outlet of load sensitive pump b; Feedback signal inlet opening Ls
1' dock with the feedback oil outlet of load-sensitive valve a, feedback signal inlet opening Ls
2' dock with the feedback oil outlet of load-sensitive valve b; Feedback signal delivery outlet Ls
1dock with the control oil interface of load sensitive pump a, feedback signal delivery outlet Ls
2dock with the control oil interface of load sensitive pump b; Refluxing opening T and flow-off DR imports fuel tank respectively, and switching interface X docks with switching controls oil circuit, or docks with switching controls electrical signal.
In the application of described Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting: described load sensitive pump a and load sensitive pump b is coaxial duplex pump.
The invention has the advantages that: two-way plug-in valve, shuttle valve, selector valve, relief valve etc. are compounded on same valve body, valve block have two filler openings, connect load sensitive pump pressure oil port; Two oil outlets, connect the filler opening of load-sensitive valve; Four signal hydraulic fluid ports, compact structure, easy to install.The control system built by this Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting can give full play to two oil hydraulic pump effects, for different operating mode, realize the interflow of two pumps, meet various duty requirements, according to actual needs, can also control separately actuator, and save cost.
Accompanying drawing explanation
Fig. 1 is the form structure schematic diagram of the embodiment that the present invention relates to,
The work system schematic diagram of Fig. 2 for building according to embodiment of the present invention inner workings (in dotted line frame).
In figure: 1, valve body, 2, high pressure oil inlet opening P
1, 3, high pressure oil inlet opening P
2, 4, high pressure oil delivery outlet P
1', 5, high pressure oil delivery outlet P
2', 6, feedback signal inlet opening Ls
1', 7, feedback signal inlet opening Ls
2', 8, feedback signal delivery outlet Ls
1, 9, feedback signal delivery outlet Ls
2, 10, oil return inlet T, 11, unloading port DR, 12, switching interface X, 13, load sensitive pump a, 14, load sensitive pump b, 15, relief valve a, 16, relief valve b, 17, two-way plug-in valve a, 18, two-way plug-in valve b, 19, two-way plug-in valve c, 20, shuttle valve a, 21, two position three way directional control valve a, 22, shuttle valve b, 23, shuttle valve c, 24, two position three way directional control valve b, 25, shuttle valve d, 26, load-sensitive valve a, 27, load-sensitive valve b.
embodiment:
Accompanying drawing discloses basic structure of the present invention and principle without limitation, and below in conjunction with accompanying drawing, the invention will be further described;
As seen from Figure 1, embodiments of the invention comprise valve body 1, and valve body 1 is provided with high pressure oil inlet opening P
12 and high pressure oil inlet opening P
23 and the high pressure oil delivery outlet P of correspondence
1' 4 and high pressure oil delivery outlet P
2' 5; Feedback signal inlet opening Ls
1' 6 and feedback signal inlet opening Ls
2the feedback signal delivery outlet Ls of ' 7 and correspondence
18 and feedback signal delivery outlet Ls
29; Also be provided with oil return inlet T 10, unloading port DR11 and switching interface X12, wherein: high pressure oil inlet opening P
12 and high pressure oil inlet opening P
23 link up, for limiting the pressure maximum of two oil hydraulic pumps respectively by the relief valve a15 of internals and relief valve b16 and oil return inlet T 10; High pressure oil inlet opening P
12 with high pressure oil delivery outlet P
1a two-way plug-in valve a17, high pressure oil inlet opening P is built between ' 4
23 with high pressure oil delivery outlet P
2between ' 5 build a two-way plug-in valve b18, two-way plug-in valve a17 and two-way plug-in valve b18 are all the one-way valves as pressure controllable at this, prevent hydraulic oil to pump reflux; High pressure oil delivery outlet P
1' 4 and high pressure oil delivery outlet P
2a shuttle valve a20 is built between ' 5; Build two-way plug-in valve c19 between the Stress control mouth of two-way plug-in valve a17 and two-way plug-in valve b18, the Stress control mouth of two-way plug-in valve c19 builds a two position three way directional control valve a21; Two position three way directional control valve a21 is under the control of switching interface X12 input signal, select a selection to link up by the oil outlet of shuttle valve a20 or with unloading port DR11, or dock with the Stress control mouth of two-way plug-in valve c19, visible, two-way plug-in valve c19 is the main switching valve as hydraulic oil interflow at this, it is under the control of two position three way directional control valve a21, selects two load sensitive pumps to be individually work or interflow work; Feedback signal inlet opening Ls
1' 6 and feedback signal inlet opening Ls
2build shuttle valve b22, shuttle valve c23 and shuttle valve d25 between ' 7, wherein, shuttle valve b22 is located immediately at feedback signal inlet opening Ls
1' 6 and feedback signal inlet opening Ls
2between ' 7, shuttle valve c23 and shuttle valve d25 is positioned at feedback signal inlet opening Ls after connecting
1' 6 and feedback signal inlet opening Ls
2between ' 7, also build a two position three way directional control valve b24 simultaneously, two position three way directional control valve b24 selects the tandem junction chalaza of a selection shuttle valve c23 and shuttle valve d25 or links up with unloading port DR11 under the control of switching interface X12 input signal, or links up with the oil outlet of shuttle valve b22.Visible shuttle valve a20, shuttle valve b22, shuttle valve c23, shuttle valve d25 and two position three way directional control valve a21 and two position three way directional control valve b24 are for regulating the working state of Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting.In the present embodiment, described switching interface X12 is the switching interface switching hydraulic oil control interface that a road controls two position three way directional control valve a21 and two position three way directional control valve b24 simultaneously, and described two position three way directional control valve a21 and two position three way directional control valve b24 is pilot operated directional control valve.
During concrete enforcement, described switching interface X is the switching interface that two-way controls two position three way directional control valve a21 and two position three way directional control valve b24 respectively, described switching interface X12 can also adopt and switch electrical signal control interface, and described two position three way directional control valve a21 and two position three way directional control valve b24 all adopts electric control reversing valve.
As seen from Figure 2, in an application of the invention: the high pressure oil delivery outlet P on valve body
1' 4 are docked with load-sensitive valve a26 input interface, high pressure oil delivery outlet P
2' 5 are docked with load-sensitive valve b27 inlet opening; High pressure oil inlet opening P
12 dock with the delivery outlet of load sensitive pump a13, high pressure oil inlet opening P
23 dock with the delivery outlet of load sensitive pump b14; Feedback signal inlet opening Ls
1' 6 are docked with the feedback oil outlet of load-sensitive valve a26, feedback signal inlet opening Ls
2' 7 are docked with the feedback oil outlet of load-sensitive valve b27; Feedback signal delivery outlet Ls
18 dock with the control oil interface of load sensitive pump a13, feedback signal delivery outlet Ls
29 dock with the control oil interface of load sensitive pump b14; Refluxing opening T10 and flow-off DR11 imports fuel tank respectively, and switching controls oil interface X12 docks with switching controls oil circuit.
In the present embodiment: described load sensitive pump a13 and load sensitive pump b14 is coaxial duplex pump.
Working procedure of the present invention is (be only that switching interface that a road simultaneously control two position three way directional control valve a21 and two position three way directional control valve b24 switch hydraulic oil control interface with the switching interface X12 described in the present embodiment, described two position three way directional control valve a21 and two position three way directional control valve b24 is pilot operated directional control valve is example):
When switching interface X12 is without pilot pressure, two position three way directional control valve a21 is in right position, now the output of load sensitive pump a13 is through the pressure oil of two-way plug-in valve a17, and the output of load sensitive pump a13 is all applied on shuttle valve a20 through the pressure oil of two-way plug-in valve a17, in these two pressure, the control chamber entering two-way plug-in valve c19 through two position three way directional control valve a21 that force value is larger, two-way plug-in valve c19 is closed, from load sensitive pump a13 hydraulic oil out through two-way plug-in valve a17 directly to high pressure oil delivery outlet P
1' 4, from load sensitive pump b14 hydraulic oil out through two-way plug-in valve b18 directly to high pressure oil delivery outlet P
2' 5, have so just isolated the working connection of two oil hydraulic pumps.Control loop part: two position three way directional control valve b24 is in right position, now due to feedback signal inlet opening Ls
1' 6 enter shuttle valve b22 and directly arrive feedback signal delivery outlet LS
18, feedback signal inlet opening Ls
2' 7 enter shuttle valve c23 and directly arrive feedback signal delivery outlet Ls
2the feedback signal oil circuit of 9, two pumps is also independent mutually.Under this kind of state, two oil hydraulic circuits are without any contact, and composition loop controls separately.
When switching interface X12 has pilot pressure, working connection part: two position three way directional control valve a21 commutates to left position, the hydraulic oil of two-way plug-in valve c19 control chamber gets back to fuel tank through two position three way directional control valve a21, and two-way plug-in valve c19 opens, and now the pressure oil of load sensitive pump a13 is through P
1with the pressure oil P of load sensitive pump b14
2collaborated by two-way plug-in valve c19; Now control loop part: two position three way directional control valve b24 commutates to left position, the feedback signal inlet opening Ls of load-sensitive valve a26
1' with the feedback signal inlet opening Ls of load-sensitive valve b27
2' through the selection of shuttle valve d25, what wherein force value was larger flows to Ls by shuttle valve a20 and shuttle valve d25
1and Ls
2, this larger force value feeds back to two oil hydraulic pumps, makes two pumps all build-up pressures, thus realizes the interflow of two load sensitive pumps.
The general knowledge of related domain tells us, can by regulating the open and close speed of size change to two-way plug-in valve c19 of two position three way directional control valve a21 damping hole.
Claims (6)
1. a Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting, comprises valve body, it is characterized in that: valve body is provided with high pressure oil inlet opening P
1with high pressure oil inlet opening P
2and the high pressure oil delivery outlet P of correspondence
1' and high pressure oil delivery outlet P
2'; Feedback signal inlet opening Ls
1' and feedback signal inlet opening Ls
2' and the feedback signal delivery outlet Ls of correspondence
1with feedback signal delivery outlet Ls
2; Also be provided with oil return inlet T, unloading port DR and switching interface X, wherein:
High pressure oil inlet opening P
1with high pressure oil inlet opening P
2link up respectively by the relief valve a of internals and relief valve b and oil return inlet T; High pressure oil inlet opening P
1with high pressure oil delivery outlet P
1' between build a two-way plug-in valve a, high pressure oil inlet opening P
2with high pressure oil delivery outlet P
2' between build a two-way plug-in valve b; High pressure oil delivery outlet P
1' and high pressure oil delivery outlet P
2' between build a shuttle valve a; Build a two-way plug-in valve c between the Stress control mouth of two-way plug-in valve a and two-way plug-in valve b, the Stress control mouth of two-way plug-in valve c builds a two position three way directional control valve a; Two position three way directional control valve a, under the control of switching interface X input signal, selects a selection and is communicated with by the oil outlet of shuttle valve a or with unloading port DR, or dock with the Stress control mouth of two-way plug-in valve c;
Feedback signal inlet opening Ls
1' and feedback signal inlet opening Ls
2' between build shuttle valve b, shuttle valve c and shuttle valve d, wherein, shuttle valve b is located immediately at feedback signal inlet opening Ls
1' and feedback signal inlet opening Ls
2' between, shuttle valve c and shuttle valve d is positioned at feedback signal inlet opening Ls after connecting
1' and feedback signal inlet opening Ls
2' between, also build a two position three way directional control valve b, two position three way directional control valve b simultaneously and under the control of switching interface X input signal, select a selection shuttle valve c with the tandem junction chalaza of shuttle valve d or be communicated with unloading port DR, or be communicated with the oil outlet of shuttle valve b.
2. Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting according to claim 1, it is characterized in that: described switching interface X is the switching interface that a road controls two position three way directional control valve a and two position three way directional control valve b simultaneously, or be the switching interface that two-way controls two position three way directional control valve a and two position three way directional control valve b respectively.
3. Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting according to claim 2, is characterized in that: described switching interface X is for switching hydraulic oil control interface, and described two position three way directional control valve a and two position three way directional control valve b is pilot operated directional control valve.
4. Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting according to claim 2, is characterized in that: described switching interface X is for switching electrical signal control interface, and described two position three way directional control valve a and two position three way directional control valve b is electric control reversing valve.
5. an application for the Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting as described in one of claim 1 ~ 4, is characterized in that: the high pressure oil delivery outlet P on valve body
1' dock with load-sensitive valve a input interface, high pressure oil delivery outlet P
2' dock with load-sensitive valve b inlet opening; High pressure oil inlet opening P
1dock with the delivery outlet of load sensitive pump a, high pressure oil inlet opening P
2dock with the delivery outlet of load sensitive pump b; Feedback signal inlet opening Ls
1' dock with the feedback oil outlet of load-sensitive valve a, feedback signal inlet opening Ls
2' dock with the feedback oil outlet of load-sensitive valve b; Feedback signal delivery outlet Ls
1dock with the control oil interface of load sensitive pump a, feedback signal delivery outlet Ls
2dock with the control oil interface of load sensitive pump b; Refluxing opening T and flow-off DR imports fuel tank respectively, and switching interface X docks with switching controls oil circuit or docks with switching controls electrical signal.
6. according to the application of Dual-pump flow-converging oil hydraulic circuit combination brake switch and proporting according to claim 5, it is characterized in that: described load sensitive pump a and load sensitive pump b is coaxial duplex pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210297442.8A CN102829011B (en) | 2012-08-21 | 2012-08-21 | Double-pump confluence hydraulic loop combined valve and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210297442.8A CN102829011B (en) | 2012-08-21 | 2012-08-21 | Double-pump confluence hydraulic loop combined valve and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102829011A CN102829011A (en) | 2012-12-19 |
| CN102829011B true CN102829011B (en) | 2015-01-14 |
Family
ID=47332260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210297442.8A Expired - Fee Related CN102829011B (en) | 2012-08-21 | 2012-08-21 | Double-pump confluence hydraulic loop combined valve and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102829011B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047207B (en) * | 2012-12-24 | 2015-04-29 | 中联重科股份有限公司 | Flow dividing and combining valve bank, hydraulic system, load sensitive hydraulic system and engineering machinery |
| CN104214157B (en) * | 2014-08-26 | 2016-08-31 | 武汉船用机械有限责任公司 | A kind of electrichydraulic control reversal valve and electrohydraulic control system |
| CN104192709B (en) * | 2014-09-22 | 2017-05-03 | 徐州重型机械有限公司 | Crane and multi-way valve hydraulic system thereof |
| CN110486345A (en) * | 2019-08-20 | 2019-11-22 | 江苏柳工机械有限公司 | Combined hydraulic valve |
| CN111022408B (en) * | 2020-01-06 | 2021-11-12 | 合肥工业大学 | Combination valve with return oil way compensation load sensing function |
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| US5284083A (en) * | 1991-11-26 | 1994-02-08 | Messier-Bugatti | System for powering the driving actuator of an aircraft undercarriage |
| CN101229902A (en) * | 2008-02-19 | 2008-07-30 | 湖南三一起重机械有限公司 | Hydraulic oil distribution controlling device for crane hydraulic system |
| CN102094861A (en) * | 2010-12-02 | 2011-06-15 | 徐州重型机械有限公司 | Multi-pump concurrent flow hydraulic system for crane and concurrent valve bank |
| CN102165200A (en) * | 2008-10-31 | 2011-08-24 | 日立建机株式会社 | Hydraulic drive device for construction machine |
| DE102011104530A1 (en) * | 2011-02-04 | 2012-08-09 | Robert Bosch Gmbh | Hydraulic actuating arrangement |
| CN202789806U (en) * | 2012-08-21 | 2013-03-13 | 中传重型装备有限公司 | Double-pump confluence hydraulic loop combined valve |
-
2012
- 2012-08-21 CN CN201210297442.8A patent/CN102829011B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284083A (en) * | 1991-11-26 | 1994-02-08 | Messier-Bugatti | System for powering the driving actuator of an aircraft undercarriage |
| CN101229902A (en) * | 2008-02-19 | 2008-07-30 | 湖南三一起重机械有限公司 | Hydraulic oil distribution controlling device for crane hydraulic system |
| CN102165200A (en) * | 2008-10-31 | 2011-08-24 | 日立建机株式会社 | Hydraulic drive device for construction machine |
| CN102094861A (en) * | 2010-12-02 | 2011-06-15 | 徐州重型机械有限公司 | Multi-pump concurrent flow hydraulic system for crane and concurrent valve bank |
| DE102011104530A1 (en) * | 2011-02-04 | 2012-08-09 | Robert Bosch Gmbh | Hydraulic actuating arrangement |
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|---|---|
| CN102829011A (en) | 2012-12-19 |
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