CN102937203A - Pressure stabilizer applied to hydraulic coupler oil-way system - Google Patents

Pressure stabilizer applied to hydraulic coupler oil-way system Download PDF

Info

Publication number
CN102937203A
CN102937203A CN2012104543597A CN201210454359A CN102937203A CN 102937203 A CN102937203 A CN 102937203A CN 2012104543597 A CN2012104543597 A CN 2012104543597A CN 201210454359 A CN201210454359 A CN 201210454359A CN 102937203 A CN102937203 A CN 102937203A
Authority
CN
China
Prior art keywords
pressure
oil
spool
valve seat
way system
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
Application number
CN2012104543597A
Other languages
Chinese (zh)
Inventor
吴卫国
翁凌俊
王长明
王旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI JIAOTONG UNIVERSITY NANYANG MOTOR TECHNOLOGY Co Ltd
Original Assignee
SHANGHAI JIAOTONG UNIVERSITY NANYANG MOTOR TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHANGHAI JIAOTONG UNIVERSITY NANYANG MOTOR TECHNOLOGY Co Ltd filed Critical SHANGHAI JIAOTONG UNIVERSITY NANYANG MOTOR TECHNOLOGY Co Ltd
Priority to CN2012104543597A priority Critical patent/CN102937203A/en
Publication of CN102937203A publication Critical patent/CN102937203A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Safety Valves (AREA)

Abstract

The invention provides a pressure stabilizer applied to a hydraulic coupler oil-way system. The pressure stabilizer comprises an overflow valve seat, wherein an overflow pipe is in sealing connection with the overflow valve seat and provided with an oil inlet and an oil outlet. A valve core is slidably arranged inside the overflow valve seat, an adjustment positioning block is coaxially arranged at one end of the valve core, a pressure adjusting spring is arranged on a mandrel between the valve core and the adjustment positioning block, and an overflow valve cover is arranged at the other end of the valve core and connected with the overflow valve seat. The pressure stabilizer applied to the hydraulic coupler oil-way system overcomes the shortcomings in the prior art, directly utilizes spring force and pressure of the oil inlet to achieve balance and pressure control. If the valve core is opened normally, the system pressure is basically constant. When a speed-adjusting type hydraulic coupler is in operation and a spoon tube is located at 100% right position, a working cavity is full of oil, a speed-adjusting range is large, and noise is small.

Description

A kind of stable-pressure device that is applied in the fluid coupling oil-way system
Technical field
The present invention relates to a kind of stable-pressure device that is applied in the fluid coupling oil-way system, belong to fluid coupling oil-way system technical field.
Background technique
Existingly be applied to pressure protective device in the fluid coupling oil-way system when system oil pressure raises, the spool against the force of the spring, level is moved to the left, by opening the hole on spool, with the release of manifold pressure oil.But owing to do not determine the active force of spring, spool is stressed not steady.Existing technology can not make the oil pressure of system stable, causes in the running of fluid coupling, and scoop tube is just entirely oil-filled when 20%~30% position, can not speed governing, and noise is large.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of system pressure that can make that is applied in the fluid coupling oil-way system and substantially keeps homeostasis, speed adjustable range is large and noise is little stable-pressure device.
In order to solve the problems of the technologies described above, technological scheme of the present invention provides a kind of stable-pressure device that is applied in the fluid coupling oil-way system, it is characterized in that: comprise relief valve seat, spill pipe and relief valve seat are tightly connected and are provided with filler opening and oil outlet; Spool is located at relief valve seat inside slidably, regulates positioning block with an end that is located in spool, and pressure adjusting spring is located at spool and is regulated on the axle between the positioning block, and relief valve is covered on the other end of spool and is connected with relief valve seat.
Preferably, described spool is provided with radial hole and damping hole.
A kind of pressure adjusting spring, spool, adjusting positioning block that is applied to the stable-pressure device in the fluid coupling oil-way system provided by the invention forms the pressure adjusting spring assembly parts, play overflow, level pressure effect, regulate positioning block and can change the impacting force of pressure adjusting spring, thereby control the pressure of hydraulic system of working.Because the variation of inertia and external load, system pressure still can change, and spool fluctuates under the effect of system pressure and spring force, and system pressure is controlled near the set pressure.
Device provided by the invention has overcome the deficiencies in the prior art, directly utilizes the pressure of spring force and filler opening to balance each other, and carries out pressure control.Often open such as spool, system pressure is the basic homeostasis that keeps just; In the variable speed fluid coupling running, scoop tube is realized entirely oil-filled when 100% position in the active chamber, and speed adjustable range is large, and noise is little.
Description of drawings
Fig. 1 is a kind of stable-pressure device schematic representation that is applied in the fluid coupling oil-way system provided by the invention;
Fig. 2 is pressure adjusting spring assembly parts working drawing in the present embodiment;
Fig. 3 is that a kind of pressure protective device that is applied in the fluid coupling oil-way system provided by the invention uses phase diagram;
Description of reference numerals
The 1-relief valve seat; 2-regulates positioning block; The 3-pressure adjusting spring; The 4-spool; The 4-1-radial hole; The 4-2-damping hole; The 5-spill pipe; 6-overflow valve gap; The 7-filler opening; The 8-oil outlet; The 9-casing.
Embodiment
For the present invention is become apparent, hereby with a preferred embodiment, and cooperate accompanying drawing to be described in detail below.
Fig. 1 is a kind of stable-pressure device schematic representation that is applied in the fluid coupling oil-way system provided by the invention, and described a kind of stable-pressure device that is applied in the fluid coupling oil-way system comprises relief valve seat 1, regulates positioning block 2, pressure adjusting spring 3, spool 4, spill pipe 5, overflow valve gap 6.Spill pipe 5 is tightly connected with relief valve seat 1, has filler opening 7, oil outlet 8; Spool 4 is in relief valve seat 1 interior slip, and along with oil pressure raises, spool 4 is opened, that is: filler opening 7, oil outlet 8 communicate.Regulate positioning block 2 coaxial ends that are contained in spool 4, pressure adjusting spring 3 is enclosed within spool 4 and regulates on the axle between the positioning block 2, and overflow valve gap 6 is contained in the other end of spool 4 and screws with relief valve seat 1.Calculate according to spool stress balance equation, have radial hole 4-1 and damping hole 4-2 on the spool 4, can reduce the vibration of spool 4 and pressure adjusting spring 3.
The directed force F of pressure adjusting spring 3 determines that according to the pressure p of oil-way system the decrement h of pressure adjusting spring 3 is determined by directed force F and the rigidity P ' of pressure regulation bullet 3; Adjusting positioning block 2 can change the impacting force of pressure adjusting spring 3, thus the pressure of regulator solution pressing system.
In conjunction with Fig. 2, pressure adjusting spring 3, spool 4, adjusting positioning block 2 form the pressure adjusting spring assembly parties, are critical components of the present invention, play overflow, level pressure effect.Be directly to utilize the directed force F of pressure adjusting spring 3 and the pressure p of oil-feed to balance each other, carry out pressure control.Because the variation of inertia and external load, system pressure p still can change, and spool 4 fluctuates under the effect of system pressure p and spring force F, makes system pressure p be controlled at set pressure p Open, p TransferNear.
Cracking pressure p Open, set pressure p TransferDetermine: according to system pressure p, determine the cracking pressure p of stable-pressure device Open, set pressure p Transferp TransferAnd p OpenDifference be the stable state override pressure, deviation is less, stability better.
Pressure adjusting spring is set up power F Open, F TransferDetermine: according to the equilibrium principle of spring force and hydraulic coupling, set up spool stress balance equation: F Open=p OpenA or F Transfer=p TransferA (deadweight and the frictional force of spool are disregarded), wherein:
The setting power (N) of F-pressure adjusting spring 3;
P-acts on the set pressure (N/mm on the spool 4 2);
Effective active area (the mm of A-spool 4 ends 2).
According to cracking pressure p Open, set pressure p Transfer, calculate respectively the setting power F of pressure adjusting spring 3 Open, F Transfer
Pressure adjusting spring decrement h determines: according to the setting power F of pressure adjusting spring Open, F TransferAnd spring rate P ' (N/mm), respectively by h (mm)=F/P ', determines the decrement h of pressure adjusting spring 1, h 2The decrement h of pressure adjusting spring changes less, pressure stability of the present invention better, the spring rate P ' of the pressure adjusting spring 3 of requirement wants enough greatly.
In conjunction with Fig. 3, during use, a kind of pressure protective device that is applied in the fluid coupling oil-way system provided by the invention is installed on the casing 9.When the coupler running, in the hydraulic system of oil pump feed, system pressure oil p is during greater than the set pressure of stable-pressure device, fluid enters relief valve seat 1 through the filler opening 7 of spill pipe 5, and by behind the radial hole 4-1 on the spool 4, act on spool 4 ends, the bearing area of spool 3 ends is A, as end hydraulic coupling p OpenOvercome spring force F OpenThe time, spool 4 moves to left, valve port is opened, with unnecessary oil through oil outlet 8 casing 9 that overflows back, the decrement h of the pressure adjusting spring 3 of this moment 1Less, fluid is opened the pressure p of valve port OpenLess, claim cracking pressure.When spillway discharge increased, spool 4 moved to left again, and valve port increases, and when whole flows overflow back casing 9 from oil outlet 8, spool 4 moved maximum, the decrement h of pressure adjusting spring 3 2Increase, act on the pressure p of spool 4 Transfer, claim to adjust pressure.p TransferAnd p OpenDifference be the stable state override pressure, deviation is less, stability better.
The present invention is a kind of stable-pressure device that is installed on the fluid coupling, and along with the running speed of fluid coupling is different, required flow is also different, and the spillway discharge of stable-pressure device also changes thereupon.The present invention can utilize the directed force F of pressure adjusting spring 3 and the pressure p of oil-feed to balance each other, and carries out pressure control, makes system pressure keep homeostasis.

Claims (2)

1. stable-pressure device that is applied in the fluid coupling oil-way system is characterized in that: comprise relief valve seat (1), spill pipe (5) is tightly connected with relief valve seat (1) and is provided with filler opening (7) and oil outlet (8); Spool (4) is located at relief valve seat (1) inside slidably, regulate positioning block (2) with an end that is located in spool (4), pressure adjusting spring (3) is located at spool (4) and is regulated on the axle between the positioning block (2), and overflow valve gap (6) is located at the other end of spool (4) and is connected with relief valve seat (1).
2. a kind of stable-pressure device that is applied in the fluid coupling oil-way system as claimed in claim 1, it is characterized in that: described spool (4) is provided with radial hole (4-1) and damping hole (4-2).
CN2012104543597A 2012-11-13 2012-11-13 Pressure stabilizer applied to hydraulic coupler oil-way system Pending CN102937203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012104543597A CN102937203A (en) 2012-11-13 2012-11-13 Pressure stabilizer applied to hydraulic coupler oil-way system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012104543597A CN102937203A (en) 2012-11-13 2012-11-13 Pressure stabilizer applied to hydraulic coupler oil-way system

Publications (1)

Publication Number Publication Date
CN102937203A true CN102937203A (en) 2013-02-20

Family

ID=47696117

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012104543597A Pending CN102937203A (en) 2012-11-13 2012-11-13 Pressure stabilizer applied to hydraulic coupler oil-way system

Country Status (1)

Country Link
CN (1) CN102937203A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106286925A (en) * 2016-08-17 2017-01-04 中国航空工业集团公司西安飞行自动控制研究所 A kind of novel voltage stabilizing overflow valve
CN106769018A (en) * 2017-01-03 2017-05-31 中国船舶重工集团公司第七研究所 A kind of chamber of fluid-flywheel clutch
CN107420538A (en) * 2017-05-17 2017-12-01 盛瑞传动股份有限公司 A kind of fluid torque-converter controls oil circuit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04277386A (en) * 1990-12-13 1992-10-02 Carl Freudenberg:Fa Pressure-compensating adjust valve
JP2002213641A (en) * 2001-01-19 2002-07-31 Mitsubishi Heavy Ind Ltd Pressure regulating valve
CN1786533A (en) * 2004-12-08 2006-06-14 刘敬善 Stabilivolt type pressure reducer
CN201232785Y (en) * 2008-05-08 2009-05-06 周重威 Ultra-high pressure overflow valve
CN201610966U (en) * 2010-03-01 2010-10-20 上海交大南洋机电科技有限公司 Pressure protecting device on oil channel of liquid coupling
CN201651474U (en) * 2010-03-22 2010-11-24 广东万和新电气股份有限公司 Constant pressure valve
CN202209456U (en) * 2011-09-01 2012-05-02 山东弘宇机械有限公司 Differential type safety valve
CN202901428U (en) * 2012-11-13 2013-04-24 上海交大南洋机电科技有限公司 Pressure regulator used in oil system of fluid coupling

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04277386A (en) * 1990-12-13 1992-10-02 Carl Freudenberg:Fa Pressure-compensating adjust valve
JP2002213641A (en) * 2001-01-19 2002-07-31 Mitsubishi Heavy Ind Ltd Pressure regulating valve
CN1786533A (en) * 2004-12-08 2006-06-14 刘敬善 Stabilivolt type pressure reducer
CN201232785Y (en) * 2008-05-08 2009-05-06 周重威 Ultra-high pressure overflow valve
CN201610966U (en) * 2010-03-01 2010-10-20 上海交大南洋机电科技有限公司 Pressure protecting device on oil channel of liquid coupling
CN201651474U (en) * 2010-03-22 2010-11-24 广东万和新电气股份有限公司 Constant pressure valve
CN202209456U (en) * 2011-09-01 2012-05-02 山东弘宇机械有限公司 Differential type safety valve
CN202901428U (en) * 2012-11-13 2013-04-24 上海交大南洋机电科技有限公司 Pressure regulator used in oil system of fluid coupling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106286925A (en) * 2016-08-17 2017-01-04 中国航空工业集团公司西安飞行自动控制研究所 A kind of novel voltage stabilizing overflow valve
CN106286925B (en) * 2016-08-17 2018-11-16 中国航空工业集团公司西安飞行自动控制研究所 A kind of novel voltage stabilizing overflow valve
CN106769018A (en) * 2017-01-03 2017-05-31 中国船舶重工集团公司第七研究所 A kind of chamber of fluid-flywheel clutch
CN106769018B (en) * 2017-01-03 2023-08-15 中国船舶集团有限公司第七一一研究所 Test box of hydraulic coupler
CN107420538A (en) * 2017-05-17 2017-12-01 盛瑞传动股份有限公司 A kind of fluid torque-converter controls oil circuit

Similar Documents

Publication Publication Date Title
CN103122880B (en) Adjustable pilot-operated pressure-reducing valve
US9803637B2 (en) Variable displacement hydraulic pump control
CN100445575C (en) Method and arrangement for controlling at least two hydraulic consumers
CN204153248U (en) A kind of overflow modulating valve
CN111043365B (en) High pressure difference water control piston type pressure reducing valve
WO2012019498A1 (en) Hydraulic control circuit and method
CN201851716U (en) Reducing valve
CN102937203A (en) Pressure stabilizer applied to hydraulic coupler oil-way system
CN105909844A (en) Proportional type proportional pressure reducing valve
CN102418721A (en) Proportional cartridge valve with variable flow gain
CN201851726U (en) Pilot overflow valve
CN106907367A (en) New Structure Speed Control Valve
CN211449776U (en) High-pressure-difference water-control piston type pressure reducing valve
CN103244492A (en) Tee-joint pressure compensator of metering pump load-sensitive hydraulic system
CN202901428U (en) Pressure regulator used in oil system of fluid coupling
CN103573753B (en) Transient test loop of hydraulic valve
EP0615592A1 (en) A pressure regulator for maintaining a stable flow level of a fluid
CN102720867A (en) Self-operated flow control valve capable of automatically adjusting pressure difference
CN103470561B (en) A kind of proportional pressure control valve
CN105604996A (en) Load-sensitive control system, control method and hydraulic system
CN106438260A (en) Electric proportional power control mechanism and control mode of hydraulic axial plunger pump
CN103244509A (en) Tee-joint pressure compensator of metering pump load-sensitive hydraulic system
CN206449267U (en) Flow controls valve assembly
CN204493321U (en) A kind of load sensing multi-way valve first and multi-way valve
CN201874908U (en) Special valve for air-conditioner of engineering machinery

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130220