CN100339602C - Speed regulating clutch control system with pilot type servo valve - Google Patents

Speed regulating clutch control system with pilot type servo valve Download PDF

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Publication number
CN100339602C
CN100339602C CNB2004100895696A CN200410089569A CN100339602C CN 100339602 C CN100339602 C CN 100339602C CN B2004100895696 A CNB2004100895696 A CN B2004100895696A CN 200410089569 A CN200410089569 A CN 200410089569A CN 100339602 C CN100339602 C CN 100339602C
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oil circuit
main valve
main
valve
valve seat
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CNB2004100895696A
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CN1789732A (en
Inventor
吴凡
王天驰
高晓敏
柴文杰
张健
常震罗
张协平
廖鹏
丁蓉
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Shanghai shine Heavy Industry Co., Ltd.
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China Shipbuilding Industry Corp 711 Research Institute
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Abstract

The present invention relates to a speed regulating clutch control system with a pilot type servo valve, which is characterized in that one pilot type servo valve is arranged in a control oil circuit, wherein the pilot servo valve comprises a main valve seat, a main valve core, a main spring, an electro-hydraulic proportion pilot valve and a manual operation pilot valve. A cylinder-shaped inner cavity and an oil circuit for connecting the inner cavity are arranged in the main valve seat, and a plurality of throttling orifices are arranged on the oil circuit. The main valve core and the main spring are arranged at the inner cavity of the main valve seat, wherein the main valve core is arranged above the main spring, and is fixedly connected with the main spring. The electro-hydraulic proportion pilot valve and the manual operation pilot valve are installed above the main valve seat, and are connected with the oil circuit of the main valve seat. The speed regulating clutch control system with a pilot type servo valve of the present invention can satisfy stepless voltage regulation of output oil pressure from zero to rated oil pressure, and thus, the stepless speed regulation of output rotational speed of a speed regulating clutch is realized in an input rotational speed range of 0-100%. The present invention is favorable to prevent the phenomenon of discharge of the clutch.

Description

The speed regulating clutch control system of band pilot type servo valve
Technical field
The present invention relates to a kind of gearing, relate in particular to a kind of speed regulating clutch control system with pilot type servo valve.
Background technique
Hydro-viscous speed governing clutch is the new drive device that abroad grows up and be used widely in nineteen seventies, and it relies on the viscosity of liquid and the shear action of oil film to come transmitting torque, and regulates rotating speed by high performance speed-adjusting and control system.Having in theory can stepless speed regulation in 0~100% scope, but No Load Start, but high efficiency does not have the slippage operation, and compact structure, size are little, in light weight, series of advantages such as friction plate long working life.
Existing hydro-viscous speed governing clutch product main body mechanical structure is similar, is the wet type lamella clutch, and difference is embodied in speed-adjusting and control system, and this is a critical component of realizing speed-regulating function, and typical speed-adjusting and control system mainly comprises following three kinds:
1) contains the hydraulic pressure half-bridge speed-adjusting and control system of Omega valve, be characterized in simple in structure, the Omega valve has feedback capability, but shortcoming is to depend on the hydraulic pressure feedback, the working oil viscosity change changes the output speed of its control after the long-term operation, control accuracy is on the low side, and there is control dead area at output speed in this in addition control system near zero low rotation speed area.
2) be feedback signal with the output speed, be the speed-adjusting and control system of electric liquid conversion executive component with the electro-hydraulic pressure servovalve, be characterized in having good dynamic response ability and static characteristic, the cost height requires high to oil cleanliness, easy clamping stagnation, thereby functional reliability is affected.
3) with the output speed be feedback signal, with the pilot proportional throttle valve is the speed-adjusting and control system of liquid conversion executive component, be characterized in that cost is lower, require lower to oil cleanliness, but have control dead area at low speed segment, in addition, main pressure regulator valve self is not with the oil pressure feedback, easily produce pressure overshoot, thereby influenced dynamic response capability.
The at present domestic report that yet there are no the hydro-viscous speed governing clutch control system of band pilot type servo valve.
Summary of the invention
Purpose of the present invention is to provide a kind of speed regulating clutch control system with pilot type servo valve, to realize the stepless speed regulation of output speed in 0~100% scope of input speed.
The object of the present invention is achieved like this, a kind of speed regulating clutch control system with pilot type servo valve, link to each other with variable-speed clutch, comprise fuel tank, oil pump, filter, main oil pressure valve, Omega valve, output speed sensor, electric control box and corresponding oil transportation connecting pipeline, comprise also by pipeline road being connected pilot type servo valve between main oil pressure valve and the Omega valve that this pilot type servo valve comprises main valve seat, main valve plug, main spring, electric-hydraulic proportion pilot valve and manual pilot valve; Be provided with cylinder bodily form inner chamber and the oil circuit that is connected this inner chamber in the described main valve seat, be provided with the many places throttle orifice on oil circuit, described main valve plug and main spring are arranged on the inner chamber of main valve seat, and wherein main valve plug is arranged on the main spring top and is fixedly linked with main spring; Described electric-hydraulic proportion pilot valve is installed in the top of main valve seat with manual pilot valve and links to each other with the main valve seat oil circuit.
The described oil circuit that is located in the main valve seat comprises working connection, prop up oil circuit, the outlet oil circuit, backflow oil circuit and feedback oil circuit, the import of described working connection connects the main oil pressure valve by pipeline road, working connection is communicated with the middle part of main valve seat inner chamber by an oil circuit in main valve seat in regular turn, be communicated with the top of main valve seat inner chamber by an oil circuit, and successively by electric-hydraulic proportion pilot valve and manual pilot valve, pass through the connecting port on main valve seat inner chamber top at last, flow back to fuel tank, on the working connection between the oil circuit of top of chamber in an oil circuit that is connecting main valve seat inner chamber middle part and the connection main valve seat, be provided with a throttle orifice; The outlet oil circuit is arranged on the below of the top connecting port of working connection and main valve seat inner chamber, the main valve seat inner chamber is communicated with the outlet of formation oil circuit with fuel tank, this outlet connects the Omega valve by pipeline road, described backflow oil circuit connects downwards from the bottom of main valve seat inner chamber, its outlet is communicated with fuel tank by pipeline road, is provided with a throttle orifice on the backflow oil circuit; Described feedback oil circuit is connected the throttle orifice top of outlet oil circuit and backflow oil circuit, is provided with a throttle orifice on the feedback oil circuit.
The top of described main valve plug is provided with an annular groove, when main valve plug is in a high position, the oil circuit that this annular groove will be communicated with the top of main valve seat inner chamber is communicated with the outlet oil circuit, an oil circuit that is communicated with main valve seat inner chamber middle part is then sealed by the valve body of main valve plug, in the main valve plug folding process, this groove is communicated with an oil circuit that is communicated with main valve seat inner chamber middle part and then this oil circuit is communicated with the outlet oil circuit, its connecting port moves down the increase of distance with main valve plug and enlarges gradually, no matter which kind of position main valve plug is in, and the outlet oil circuit is communicated with groove on it all the time.
Described electric-hydraulic proportion pilot valve and manual pilot valve are throttle valve, the electronic or manual control of the big I of its restriction.
The speed regulating clutch control system of band pilot type servo valve of the present invention makes it compared with prior art owing to adopted above-mentioned technological scheme, has following advantage and good effect:
1, owing in pilot type servo valve, reasonably is provided with many oil circuits and a plurality of throttle orifice, it is had from zero stepless voltage regulation effect in the rated oil pressure scope, make variable-speed clutch can realize output speed stepless speed regulation in 0~100% scope of input speed.
2, owing in pilot type servo valve, be provided with the feedback oil circuit, and on the feedback oil circuit, be provided with throttle orifice, after output oil pressure dwindles through ratio, act on an end of main valve plug, make it have the output oil pressure feedback function.
3, owing to adopted rational oil circuit design, make pilot type servo valve when output oil pressure is adjusted to zero, output terminal and fuel tank are connected, and guarantee the oil return of output terminal this moment, help preventing " band row " phenomenon of clutch.
Description of drawings
Embodiment by following speed regulating clutch control system to band pilot type servo valve of the present invention can further understand purpose of the present invention, specific structural features and advantage in conjunction with the description of its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the structural principle schematic representation of the speed regulating clutch control system of band pilot type servo valve of the present invention.
Embodiment
Referring to Fig. 1, the speed regulating clutch control system of band pilot type servo valve of the present invention comprises fuel tank 1, oil pump 2, filter 3, main oil pressure valve 4, pilot type servo valve 5, Omega valve 6, input shaft 7, oil cylinder oil pocket 8, oil cylinder piston 9, friction member 10, output shaft 11, output speed sensor 12 and electric control box 13.Fuel tank 1, oil pump 2, filter 3, main oil pressure valve 4, pilot type servo valve 5, Omega valve 6 orders link to each other by pipeline road, and Omega valve 6 is arranged in the input shaft 7.The speed regulating clutch control system of band pilot type servo valve of the present invention is when work, control oil is after oil pump is carried and passed through each valve member adjustment oil pressure, enter operating cylinder 8, promotion piston 9 makes between the friction element 10 and produces frictional force, thereby make input shaft 7 drive output shaft 11 rotations, at output terminal speed probe 12 is housed, provide and feed back signal to electric control box 13, electric control box 13 this signal and instruction signal relatively after, output current signal is given pilot type servo valve 5, change the control oil pressure, make piston thrust change change in friction force between the friction element, thereby change output speed, realize the closed loop of The whole control system, wherein pilot type servo valve 5 and Omega valve 6 self have feedback, form local little closed loop respectively.
Please continue referring to Fig. 1, the pilot type servo valve 5 among the present invention comprises main valve seat 51, main valve plug 52, main spring 53, electric-hydraulic proportion pilot valve 54 and manual pilot valve 55.Be provided with cylinder bodily form inner chamber and the oil circuit that is connected this inner chamber in the main valve seat 51, main valve plug 52 and main spring 53 are arranged on the inner chamber of main valve seat, and wherein main valve plug 52 is arranged on the main spring top and is fixedly linked with main spring.Electric-hydraulic proportion pilot valve 54 and manual pilot valve 55 are installed in the top of main valve seat 51.Electric-hydraulic proportion pilot valve and manual pilot valve are throttle valve, the electronic or manual control of the big I of its restriction.The oil circuit that is located in the main valve seat 51 comprises working connection 511, an oil circuit 512,513 and 514 that is communicated with working connection, outlet oil circuit 516, backflow oil circuit 517 and feedback oil circuit 518.The import of working connection 511 connects main oil pressure valve 4 by pipeline road, working connection is communicated with the middle part of main valve seat inner chamber by an oil circuit 512 in main valve seat in regular turn, be communicated with the top of main valve seat inner chamber by an oil circuit 513, working connection 511 by electric-hydraulic proportion pilot valve 54 and manual pilot valve 55, is communicated with the top of main valve seat inner chamber by an oil circuit 514 successively.Flow back to fuel tank at last.On the working connection between an oil circuit 512 and the oil circuit 513, be provided with throttle orifice 5111.Outlet oil circuit 516 is arranged on the below of working connection and main valve seat inner chamber top connecting port, the main valve seat inner chamber is in communication with the outside forms the oil circuit outlet, and this outlet connects Omega valve 6 by pipeline road.Backflow oil circuit 517 connects downwards from the bottom of main valve seat inner chamber, and its outlet is communicated with fuel tank 1 by pipeline road, is provided with throttle orifice 5171 on the backflow oil circuit.Feedback oil circuit 518 is connected throttle orifice 5171 tops of outlet oil circuit 516 and backflow oil circuit 517, is provided with throttle orifice 5181 on the feedback oil circuit.
Please continue referring to Fig. 1, the top of the main valve plug 52 of the pilot type servo valve 5 among the present invention is provided with an annular groove 521, when main valve plug is in a high position (position shown in Fig. 1), the oil circuit 514 that this annular groove will be communicated with the top of main valve seat inner chamber is communicated with outlet oil circuit 516, and an oil circuit 512 that is communicated with main valve seat inner chamber middle part is then sealed by the valve body of main valve plug.In main valve plug 52 folding processes, this annular groove is communicated with an oil circuit 512 and then this oil circuit is communicated with outlet oil circuit 516, and its connecting port moves down the increase of distance with main valve plug and enlarges gradually.No matter which kind of position main valve plug is in, and outlet oil circuit 516 is communicated with annular groove 521 on the main valve plug all the time.
The working procedure principle of the pilot type servo valve 5 among the present invention can be described as follows in conjunction with Fig. 1: fluid enters from the import of working connection 511 in the main valve seat 51 of servovalve and along working connection 511 and advances, because the oil pressure P that oil circuit 512 enters the import P place of main valve seat 51 inner chambers is being propped up in the effect of main oil pressure valve 4 PBe steady state value, the initial position of main valve plug 52 this moment under the effect of main spring 53 hinders fluid and enters oil pocket as shown in Figure 1.Fluid moves on and flow to the import X place that oil circuit 513 enters main valve seat 51 inner chambers along working connection 511 through throttle orifice 5111, makes oil pressure act on main valve plug 52 upper ends, and flow through electric-hydraulic proportion pilot valve 54 and the manual pilot valve 55 of moving on got back to fuel tank.Electric-hydraulic proportion pilot valve 54 and manual pilot valve 55 are throttle valve, the oil pressure P at can regulate X place X, because P XEffect, main valve plug 52 moves down, and makes the fluid at P place enter that the outlet T from outlet oil circuit 516 flows out behind the inner chamber, because the opening at P place is adjustable, forms throttling, the generation of GuPChu to T place pressure drop, i.e. P T≤ P P, the little then pressure drop of opening is big, and opening greatly then pressure drop is little, and when opening was enough big, pressure drop can be ignored, and pilot type servo valve is exactly to be the purpose that the size of P place opening realizes regulating oil pressure by the high and low position of regulating main valve plug 52.Fluid is being flowed through outlet during oil circuit 516, understand some fluid through feedback oil circuit 518 and on throttle orifice 5181 flow to backflow oil circuit 517 and enter inner chamber with the connection mouth Y place of main valve seat intracavity bottom and from this, make oil pressure act on the lower end of main valve plug 52.Some flows back to fuel tank 1 through throttle orifice 5171 fluid of feedback oil circuit 518, because the effect of throttle orifice 5181,5171, T place to Y place also produces pressure drop, i.e. P Y=kP T(k<1 is determined by the aperture of damping hole 5181,5171).The oil pressure up and down of main valve plug 52 forms balanced relationship
F wherein SpringThe active force of-spring
A-main valve plug area.
Draw through derivation:
As can be seen from the above equation, k, F Spring, A is by the structures shape of valve, by electric-hydraulic proportion pilot valve 54 and manually pilot valve 55 regulate P XThe time, P TValue produces the variation of-one correspondence immediately.
Though the oil pressure P that pilot valve 54 and 55 is adjusted XHave the adjusting dead band in a certain zone, but the introducing of pilot type servo valve has successfully solved this problem near zero, as can be seen from the above equation, as long as regulate oil pressure P XMake its less than The time, main valve plug 52 is promptly closed the P mouth output oil pressure P TBe zero.Therefore, pilot type servo valve has been realized from zero stepless voltage regulation function in the rated oil pressure scope.
The oil pressure feedback function of pilot type servo valve self be meant a part of fluid of outlet on the oil circuit 516 through feedback oil circuit 518 and on throttle orifice 5181 act on the lower end of main valve plug 52 and form oil pressure P Y, the position that changes main valve plug 52 changes the size of P place opening, self is output oil pressure P thereby reach change TEffect.
When pilot type servo valve is zero at output oil pressure, be position shown in Figure 1, outlet oil circuit 516 is communicated with an oil circuit 514, can make the fluid in the oil cylinder flow back to fuel tank 1 through working connection 511 ends like this, it is stagnant to avoid oil cylinder to expand, thereby helps avoiding " band row " phenomenon of clutch.
In sum, the speed regulating clutch control system of band pilot type servo valve of the present invention can satisfy output oil pressure from zero to the stepless voltage regulation the rated oil pressure, thereby realizes the stepless speed regulation of output speed in 0-100% input speed degree scope of speed governing degree clutch.

Claims (4)

1. speed regulating clutch control system with pilot type servo valve, link to each other with variable-speed clutch, comprise fuel tank, oil pump, filter, main oil pressure valve, Omega valve, output speed sensor, electric control box and corresponding oil transportation connecting pipeline, it is characterized in that: comprise also by pipeline road being connected pilot type servo valve between main oil pressure valve and the Omega valve that this pilot type servo valve comprises main valve seat, main valve plug, main spring, electric-hydraulic proportion pilot valve and manual pilot valve; Be provided with cylinder bodily form inner chamber and the oil circuit that is connected this inner chamber in the described main valve seat, be provided with the many places throttle orifice on oil circuit, described main valve plug and main spring are arranged on the inner chamber of main valve seat, and wherein main valve plug is arranged on the main spring top and is fixedly linked with main spring; Described electric-hydraulic proportion pilot valve is installed in the top of main valve seat with manual pilot valve and links to each other with the main valve seat oil circuit.
2. according to the speed regulating clutch control system of claims 1 described band pilot type servo valve, it is characterized in that: the described oil circuit that is located in the main valve seat comprises working connection, prop up oil circuit, the outlet oil circuit, backflow oil circuit and feedback oil circuit, the import of described working connection connects the main oil pressure valve by pipeline road, working connection is communicated with the middle part of main valve seat inner chamber by an oil circuit in main valve seat in regular turn, be communicated with the top of main valve seat inner chamber by an oil circuit, and successively by electric-hydraulic proportion pilot valve and manual pilot valve, pass through the connecting port on main valve seat inner chamber top at last, flow back to fuel tank, on the working connection between the oil circuit of top of chamber in an oil circuit that is connecting main valve seat inner chamber middle part and the connection main valve seat, be provided with a throttle orifice; The outlet oil circuit is arranged on the below of the top connecting port of working connection and main valve seat inner chamber, the main valve seat inner chamber is communicated with the outlet of formation oil circuit with fuel tank, this outlet connects the Omega valve by pipeline road, described backflow oil circuit connects downwards from the bottom of main valve seat inner chamber, its outlet is communicated with fuel tank by pipeline road, is provided with a throttle orifice on the backflow oil circuit; Described feedback oil circuit is connected the throttle orifice top of outlet oil circuit and backflow oil circuit, is provided with a throttle orifice on the feedback oil circuit.
3. according to the speed regulating clutch control system of claims 2 described band pilot type servo valves, it is characterized in that: the top of described main valve plug is provided with an annular groove, when main valve plug is in a high position, the oil circuit that this annular groove will be communicated with the top of main valve seat inner chamber is communicated with the outlet oil circuit, an oil circuit that is communicated with main valve seat inner chamber middle part is then sealed by the valve body of main valve plug, in the main valve plug folding process, this groove is communicated with an oil circuit that is communicated with main valve seat inner chamber middle part and then this oil circuit is communicated with the outlet oil circuit, its connecting port moves down the increase of distance with main valve plug and enlarges gradually, no matter which kind of position main valve plug is in, and the outlet oil circuit is communicated with groove on it all the time.
4. according to the speed regulating clutch control system of claims 1 described band pilot type servo valve, it is characterized in that: described electric-hydraulic proportion pilot valve and manual pilot valve are throttle valve, the electronic or manual control of the big I of its restriction.
CNB2004100895696A 2004-12-15 2004-12-15 Speed regulating clutch control system with pilot type servo valve Active CN100339602C (en)

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Application Number Priority Date Filing Date Title
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CN100339602C true CN100339602C (en) 2007-09-26

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100404901C (en) * 2006-08-11 2008-07-23 夏学苏 Hydraulic control system for viscosity speed regulation clutch
CN103850999B (en) * 2012-11-29 2017-03-29 中国船舶重工集团公司第七一一研究所 For the oil pump oil inlet quantity adjusting control valve of high pressure co-rail system
JPWO2017057342A1 (en) * 2015-09-29 2018-04-26 アイシン・エィ・ダブリュ株式会社 Clutch device and power transmission device
CN109540529B (en) * 2018-11-21 2020-09-22 中国航发北京航科发动机控制系统科技有限公司 Equivalent nozzle simulation tool

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Publication number Priority date Publication date Assignee Title
GB1374089A (en) * 1970-11-04 1974-11-13 Caterpillar Tractor Co Power transmission
US3851739A (en) * 1973-09-04 1974-12-03 Twin Disc Inc Hoist reversing transmission with centrifugal speed control
US3862676A (en) * 1974-02-28 1975-01-28 Dana Corp Clutch controlled by engine speed and torque
US3913715A (en) * 1974-08-22 1975-10-21 Twin Disc Inc Modulatable friction clutch controlled by a centrifugal force and angular acceleration sensitive valve
CN86100396B (en) * 1986-01-14 1988-08-24 上海交通大学 Speed regulation clutch with omega valve and compound spring
CN1004371B (en) * 1986-11-04 1989-05-31 上海交通大学 Centrifugal type governing speed and steady speed controlled oil film clutch
CN2103691U (en) * 1991-09-25 1992-05-06 杭州齿轮箱厂 Autocontroller for electro-hydraulic speed-regulating clutch
CN2157347Y (en) * 1993-03-31 1994-02-23 付重庆 Speed control valve set

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1374089A (en) * 1970-11-04 1974-11-13 Caterpillar Tractor Co Power transmission
US3851739A (en) * 1973-09-04 1974-12-03 Twin Disc Inc Hoist reversing transmission with centrifugal speed control
US3862676A (en) * 1974-02-28 1975-01-28 Dana Corp Clutch controlled by engine speed and torque
US3913715A (en) * 1974-08-22 1975-10-21 Twin Disc Inc Modulatable friction clutch controlled by a centrifugal force and angular acceleration sensitive valve
CN86100396B (en) * 1986-01-14 1988-08-24 上海交通大学 Speed regulation clutch with omega valve and compound spring
CN1004371B (en) * 1986-11-04 1989-05-31 上海交通大学 Centrifugal type governing speed and steady speed controlled oil film clutch
CN2103691U (en) * 1991-09-25 1992-05-06 杭州齿轮箱厂 Autocontroller for electro-hydraulic speed-regulating clutch
CN2157347Y (en) * 1993-03-31 1994-02-23 付重庆 Speed control valve set

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Title
一种新型的可控无级调速传动装置 魏宸官,北京工业学院院报,第1985卷第3期 1985 *
调速离合器控制系统分析 孙忠池,彭锡文,唐山工程技术学院院报,第1992卷第3期 1992 *

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Effective date of registration: 20151222

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Address before: 200011 Shanghai Nanjiang Road No. 18

Patentee before: The 711th Research Institute of China Shipbuilding Industrial Corporation(CSIC)