CN107152423A - Closed type hydraulic system with balanced valve - Google Patents
Closed type hydraulic system with balanced valve Download PDFInfo
- Publication number
- CN107152423A CN107152423A CN201710460166.5A CN201710460166A CN107152423A CN 107152423 A CN107152423 A CN 107152423A CN 201710460166 A CN201710460166 A CN 201710460166A CN 107152423 A CN107152423 A CN 107152423A
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- valve
- interface
- pipeline
- motor
- counterbalance valve
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Classifications
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- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of closed type hydraulic system, specifically the closed type hydraulic system with balanced valve, is particularly suitable for use in scientific investigation class winch and other elevator class winches.It includes enclosed pump, motor.The enclosed pump has first interface and second interface, and the motor has the 3rd interface and the 4th interface.The enclosed pump is connected with the first fuel tank, and the first interface of enclosed pump is connected by pipeline with the 3rd interface of motor.It is characterized in also including counterbalance valve, the counterbalance valve has import, outlet and control mouth, the import of counterbalance valve is connected by pipeline with the 4th interface of motor, the outlet of counterbalance valve is connected by pipeline with the second interface of enclosed pump, there is check valve between the import and outlet of counterbalance valve, the flow direction of check valve is the import that exports to from counterbalance valve, and the control mouth of counterbalance valve is connected with control oil circuit by pipeline.The hydraulic system can keep load, and caloric value is small, it is ensured that system is normally run.
Description
Technical field
The present invention relates to a kind of closed type hydraulic system, specifically the closed type hydraulic system with balanced valve, particularly suitable
In scientific investigation class winch and other elevator class winches.
Background technology
Closed type hydraulic system because with compact conformation, stable drive, transmission efficiency, without throttling and spill losses, system
The advantages of responding fast, so pulling winch is typically all driven using closed type hydraulic system.
At present, the closed type hydraulic system of pulling winch includes enclosed pump, motor.The enclosed pump has first interface and second
Interface, the motor has the 3rd interface and the 4th interface.The enclosed pump is connected with the first fuel tank, and the first interface of enclosed pump leads to
Piping is connected with the 3rd interface of motor, and the second interface of enclosed pump is connected by pipeline with the 4th interface of motor.This
Closed type hydraulic system is planted due to the characteristic of system itself, along with fluid pressure line arranges general all longer, when pulling winch hangs load
Weight is when starting moment, and system pressure can not set up required value at once, there is the problem of can not keeping load, causes weight
Have it is secondary under the risk fallen.Also have in the prior art and pressure elements balanced valve is directly added into closed type hydraulic system, pass through production
The raw pressure loss keeps the purpose of load to reach.However, the increase of system heat generation amount, influence system can be caused by being directly added into balanced valve
The normal operation of system.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of closed type hydraulic system with balanced valve, the hydraulic system can
Load is kept, caloric value is small, it is ensured that system is normally run.
To solve the above problems, providing following technical scheme：
The closed type hydraulic system with balanced valve of the present invention includes enclosed pump, motor.The enclosed pump has first interface and
Two interfaces, the motor has the 3rd interface and the 4th interface.The enclosed pump is connected with the first fuel tank, the first interface of enclosed pump
It is connected by pipeline with the 3rd interface of motor.It is characterized in also including counterbalance valve, the counterbalance valve has import, outlet and controlled
Mouthful, the import of counterbalance valve is connected by pipeline with the 4th interface of motor, the outlet of counterbalance valve pass through pipeline and enclosed pump the
Two interfaces are connected, and have check valve between the import and outlet of counterbalance valve, the flow direction of check valve is the import that exports to from counterbalance valve, carry on the back
The control mouth of pressure valve is connected with control oil circuit by pipeline.
Wherein, the control oil circuit includes solenoid directional control valve and gear pump, and gear pump has oil inlet and oil-out, and electromagnetism is changed
Have inlet, the first liquid outlet and the second liquid outlet to valve, the oil inlet of gear pump is connected with the second fuel tank, gear pump it is fuel-displaced
Mouthful it is connected with the inlet of solenoid directional control valve, the control mouth phase that the first liquid outlet of solenoid directional control valve passes through pipeline and counterbalance valve
Even, the second liquid outlet of solenoid directional control valve is connected with the 3rd fuel tank by pipeline, and the oil-out of gear pump passes through pipeline and the 3rd
Fuel tank is connected, and has overflow valve on the pipeline between the oil-out of gear pump and the 3rd fuel tank.
There is shuttle valve on that segment pipe between first liquid outlet of the solenoid directional control valve and the control mouth of counterbalance valve, shuttle valve is also
It is connected by pipeline with the first interface of enclosed pump.
Above scheme is taken, with advantages below：
Due to the present invention the closed type hydraulic system with balanced valve also include counterbalance valve, the counterbalance valve have import, export and
Control mouth, the import of counterbalance valve is connected by pipeline with the 4th interface of motor, and the outlet of counterbalance valve passes through pipeline and enclosed pump
Second interface be connected, have check valve between the import and outlet of counterbalance valve, the flow direction of check valve be from counterbalance valve export into
Mouthful, the control mouth of counterbalance valve is connected with control oil circuit by pipeline.Parallel valve is constituted using check valve and counterbalance valve so that this is closed
Formula hydraulic system can keep load.Moreover, when in use, when the second interface of enclosed pump is fuel-displaced, first interface oil-feed, at motor
When the state that lifted, control oil circuit is not involved in action, and the fluid of the second interface of enclosed pump enters motor by check valve
4th interface, due to check valve back pressure very little, so the heating very little that balanced valve is caused to hydraulic system under this state.Work as enclosed
The first interface of pump is fuel-displaced, second interface oil-feed, when motor is in decentralization state, the participation action of control oil circuit, passes through counterbalance valve
Control mouth open counterbalance valve so that fluid sequentially passes through the 4th interface and counterbalance valve of the 3rd interface, motor, motor of motor
The second interface of motor closed pump is arrived afterwards, because balanced valve is in open mode, so balanced valve is made to hydraulic system under this state
Into heating very little.Therefore, operationally caloric value is small for this closed type hydraulic system, and the influence to system operation is smaller so that
System can normally be run.
Brief description of the drawings
The structure principle chart of the closed type hydraulic system with balanced valve of Fig. 1 present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, the closed type hydraulic system with balanced valve of the present invention includes enclosed pump 1, motor 4 and counterbalance valve 3.
The enclosed pump 1 has first interface A1 and second interface B1, and the motor 4 has the 3rd interface A4 and the 4th interface B4.It is described to close
Formula pump 1 is connected with the first fuel tank 11, and the first interface A1 of enclosed pump 1 is connected by pipeline with the 3rd interface A4 of motor 4.It is described
Counterbalance valve 3 has the 4th interface B4 phases that import A3, outlet B3 and control mouth C, the import A3 of counterbalance valve 3 pass through pipeline and motor 4
Even, the outlet B3 of counterbalance valve 3 is connected by pipeline with the second interface B1 of enclosed pump 1, between the import A3 and outlet B3 of counterbalance valve 3
There is check valve 2, the flow direction of check valve 2 is that, from the outlet B3 of counterbalance valve 3 to import A3, the control mouth C of counterbalance valve 3 is connected by pipeline
It is connected to control oil circuit.
Wherein, the control oil circuit includes solenoid directional control valve 6 and gear pump 10, and gear pump 10 has oil inlet A10 and fuel-displaced
Mouth B10, solenoid directional control valve 6 has inlet P, the first liquid outlet A6 and the second liquid outlet B6, the oil inlet A10 connections of gear pump 10
There is the second fuel tank 9, the oil-out B10 of gear pump 10 is connected with the inlet P of solenoid directional control valve 6, the first of solenoid directional control valve 6 goes out
Liquid mouthful A6 is connected by pipeline with the control mouth C of counterbalance valve 3, and the second liquid outlet B6 of solenoid directional control valve 6 is connected with by pipeline
3rd fuel tank 8, the oil-out B10 of gear pump 10 is connected by pipeline with the 3rd fuel tank 8, and the oil-out B10 of gear pump 10 with
There is overflow valve 7 on pipeline between 3rd fuel tank 8.
There is shuttle valve 5 on that segment pipe between first liquid outlet A6 of the solenoid directional control valve 6 and the control mouth C of counterbalance valve 3,
Shuttle valve 5 is also connected by pipeline with the first interface A1 of enclosed pump 1.
In use, state one, the second interface B1 of enclosed pump 1 is fuel-displaced, first interface A1 oil-feeds.
Under this state, control oil circuit is not involved in action, and counterbalance valve 3 is closed, and the inlet P of solenoid directional control valve 6 goes out with first
Liquid mouthful A6 is obstructed, and the inlet P of solenoid directional control valve 6 is communicated with the second liquid outlet B6, in the presence of gear pump 10, the second fuel tank
Control oil in 9 sequentially passes through the oil inlet A10, gear pump 10, gear pump 10 of gear pump 10 oil-out B10, electromagnetic switch
Enter in the 3rd fuel tank 8, unloaded after the inlet P of valve 6, solenoid directional control valve 6, the second liquid outlet B6 of solenoid directional control valve 6
Lotus.In the presence of enclosed pump 1, the system oil in the first fuel tank 11 sequentially pass through enclosed pump 1, the second interface B1 of enclosed pump 1,
Enter again after check valve 2, the 4th interface B4 of motor 4, motor 4, the 3rd interface A4 of motor 4, the first interface A1 of enclosed pump 1
Enter into enclosed pump 1, so circulation, the 3rd that the 4th interface B4, motor 4, motor 4 of motor 4 are sequentially passed through in system oil connects
During mouth A4, drive motor 4 makes motor 4 be in lifting state.
State two, the first interface A1 of enclosed pump 1 is fuel-displaced, second interface B1 oil-feeds.
Under this state, control oil circuit participation action, the inlet P of solenoid directional control valve 6 is communicated with the first liquid outlet A6, electromagnetism
The inlet P of reversal valve 6 and the second liquid outlet B6 are obstructed, in the presence of gear pump 10, and the control oil in the second fuel tank 9 is successively
By the oil inlet A10, gear pump 10, gear pump 10 of gear pump 10 oil-out B10, inlet P, the electricity of solenoid directional control valve 6
The control mouth C of counterbalance valve 3 is entered after magnetic reversal valve 6, the first liquid outlet A6 of solenoid directional control valve 6, shuttle valve 5, counterbalance valve is opened
3.Meanwhile, in the presence of enclosed pump 1, the system oil in the first fuel tank 11 sequentially passes through enclosed pump 1, the first interface of enclosed pump 1
A1, the 3rd interface A4 of motor 4, motor 4, the 4th interface B4 of motor 4, the import A3 of counterbalance valve 3, counterbalance valve 3, counterbalance valve 3
Outlet B3, the second interface B1 of enclosed pump 1 after be re-introduced into enclosed pump 1, so circulation, system oil pass through motor 4
The 3rd interface A4, motor 4, during the 4th interface B4 of motor 4, drive motor 4 makes motor 4 be in decentralization state
In the case of state two, when controlling oil circuit to break down, it is divided into from the first interface A1 of enclosed pump 1 systems gone out
Two parts, portion flow to motor 4, another by shuttle valve 5 enter counterbalance valve 3 control mouth C, open counterbalance valve 3 so that hydraulic pressure
System still can normally be run.
Claims (3)
1. the closed type hydraulic system with balanced valve, including enclosed pump（1）, motor（4）；The enclosed pump（1）There is first interface
（A1）And second interface（B1）, the motor（4）There is the 3rd interface（A4）With the 4th interface（B4）；The enclosed pump（1）Connection
There is the first fuel tank（11）, enclosed pump（1）First interface（A1）Pass through pipeline and motor（4）The 3rd interface（A4）It is connected；Its
It is characterised by also including counterbalance valve（3）, the counterbalance valve（3）There is import（A3）, outlet（B3）And control mouth（C）, counterbalance valve（3）'s
Import（A3）Pass through pipeline and motor（4）The 4th interface（B4）It is connected, counterbalance valve（3）Outlet（B3）Pass through pipeline and enclosed
Pump（1）Second interface（B1）It is connected, counterbalance valve（3）Import（A3）With outlet（B3）Between have check valve（2）, check valve（2）
Flow direction be from counterbalance valve（3）Outlet（B3）To import（A3）, counterbalance valve（3）Control mouth（C）Control is connected with by pipeline
Liquefaction road.
2. there is the closed type hydraulic system of balanced valve as claimed in claim 1, it is characterised in that the control oil circuit includes electricity
Magnetic reversal valve（6）And gear pump（10）, gear pump（10）There is oil inlet（A10）And oil-out（B10）, solenoid directional control valve（6）Have
Inlet（P）, the first liquid outlet（A6）With the second liquid outlet（B6）, gear pump（10）Oil inlet（A10）It is connected with the second oil
Case（9）, gear pump（10）Oil-out（B10）With solenoid directional control valve（6）Inlet（P）It is connected, solenoid directional control valve（6）
One liquid outlet（A6）Pass through pipeline and counterbalance valve（3）Control mouth（C）It is connected, solenoid directional control valve（6）The second liquid outlet（B6）
3rd fuel tank is connected with by pipeline（8）, gear pump（10）Oil-out（B10）Pass through pipeline and the 3rd fuel tank（8）It is connected, and
Gear pump（10）Oil-out（B10）With the 3rd fuel tank（8）Between pipeline on have overflow valve（7）.
3. there is the closed type hydraulic system of balanced valve as claimed in claim 2, it is characterised in that the solenoid directional control valve（6）'s
First liquid outlet（A6）With counterbalance valve（3）Control mouth（C）Between that segment pipe on have shuttle valve（5）, shuttle valve（5）Also pass through pipeline
With enclosed pump（1）First interface（A1）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710460166.5A CN107152423B (en) | 2017-06-17 | 2017-06-17 | Closed type hydraulic system with balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710460166.5A CN107152423B (en) | 2017-06-17 | 2017-06-17 | Closed type hydraulic system with balanced valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107152423A true CN107152423A (en) | 2017-09-12 |
| CN107152423B CN107152423B (en) | 2019-03-26 |
Family
ID=59794938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710460166.5A Active CN107152423B (en) | 2017-06-17 | 2017-06-17 | Closed type hydraulic system with balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107152423B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773103A (en) * | 2019-03-18 | 2019-05-21 | 杭州诺祥科技有限公司 | Flow matching type hydraulic machine servo control system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003300691A (en) * | 2002-04-08 | 2003-10-21 | Sekigahara Seisakusho:Kk | Auto-tensioning device of hydraulic crane |
| JP2006097854A (en) * | 2004-09-30 | 2006-04-13 | Kobelco Contstruction Machinery Ltd | Hydraulic control circuit for construction machine |
| CN102518610A (en) * | 2011-12-15 | 2012-06-27 | 常德中联重科液压有限公司 | Motor control loop and control valve |
| CN102874704A (en) * | 2012-09-28 | 2013-01-16 | 三一重工股份有限公司 | Hydraulic system, hoisting mechanism and engineering machinery |
| CN103256264A (en) * | 2013-05-10 | 2013-08-21 | 三一汽车起重机械有限公司 | Hydraulic system and engineering machinery with same |
| CN204138254U (en) * | 2014-07-29 | 2015-02-04 | 徐州五洋科技股份有限公司 | Flame-proof mine hydraulic wireline winch hydraulic efficiency pressure system |
| JP2015232374A (en) * | 2014-06-10 | 2015-12-24 | 株式会社神戸製鋼所 | Hydraulic transmission of work machine |
-
2017
- 2017-06-17 CN CN201710460166.5A patent/CN107152423B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003300691A (en) * | 2002-04-08 | 2003-10-21 | Sekigahara Seisakusho:Kk | Auto-tensioning device of hydraulic crane |
| JP2006097854A (en) * | 2004-09-30 | 2006-04-13 | Kobelco Contstruction Machinery Ltd | Hydraulic control circuit for construction machine |
| CN102518610A (en) * | 2011-12-15 | 2012-06-27 | 常德中联重科液压有限公司 | Motor control loop and control valve |
| CN102874704A (en) * | 2012-09-28 | 2013-01-16 | 三一重工股份有限公司 | Hydraulic system, hoisting mechanism and engineering machinery |
| CN103256264A (en) * | 2013-05-10 | 2013-08-21 | 三一汽车起重机械有限公司 | Hydraulic system and engineering machinery with same |
| JP2015232374A (en) * | 2014-06-10 | 2015-12-24 | 株式会社神戸製鋼所 | Hydraulic transmission of work machine |
| CN204138254U (en) * | 2014-07-29 | 2015-02-04 | 徐州五洋科技股份有限公司 | Flame-proof mine hydraulic wireline winch hydraulic efficiency pressure system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773103A (en) * | 2019-03-18 | 2019-05-21 | 杭州诺祥科技有限公司 | Flow matching type hydraulic machine servo control system |
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| Publication number | Publication date |
|---|---|
| CN107152423B (en) | 2019-03-26 |
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