CN106762970A - Double ratio control structures and control method of a kind of variable displacement motor - Google Patents
Double ratio control structures and control method of a kind of variable displacement motor Download PDFInfo
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- CN106762970A CN106762970A CN201611215280.3A CN201611215280A CN106762970A CN 106762970 A CN106762970 A CN 106762970A CN 201611215280 A CN201611215280 A CN 201611215280A CN 106762970 A CN106762970 A CN 106762970A
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
- Reciprocating Pumps (AREA)
- Servomotors (AREA)
Abstract
The invention discloses double ratio control structures and control method of a kind of variable displacement motor, including with motor（1）The variable cylinder of connection（2）, proportional control valve（3）With high pressure autocontrol valve（4）；High pressure autocontrol valve（4）It is provided with high voltage control feedback spring（5）, high voltage control feedback spring（5）With proportional control valve（3）Tail end be connected；The proportional control valve（3）Head end is provided with feedback spring（6）, feedback spring（6）With variable cylinder（2）It is connected；It is that proportional control valve is adjusted or high pressure automatically controls valve regulation that high pressure autocontrol valve controls to adjust type according to motor inlet pressure；The motor oil inlet high pressure that the high pressure autocontrol valve is adjusted to be subject to through high voltage control feedback spring acts on feedback spring, realizes the proportion adjustment process of high pressure autocontrol valve.The present invention have can eliminate control valve between interfere and improves control valve control stability the characteristics of.
Description
Technical field
The present invention relates to a kind of variable displacement motor, double ratio control structures of particularly a kind of variable displacement motor.
Background technology
In project hydropress tool, all motors only have a kind of control mode, it is impossible to realize the non-of two control modes
Interference superposition or the superposition of double ratios control, it is impossible to meet various demands of the main frame to motor control, it is existing with double control
Variable displacement motor in HD1D (guide's hydraulic control plus-pressure is blocked) and EP2D (electric proportional control plus-pressure is blocked) as major control
Mode, both control modes use series design, therefore cannot solve the interference problem between two kinds of valve controls, especially in the ban
When leading pilot operated valve device or electric proportional control valve in different working condition, the setting value of constant pressure valve can be caused large variation occur, this
Because constant pressure valve operating point can be caused to change because its throttle is different when high-voltage oil liquid is by first control valve, this
It is two problems for interfering of valve；On the other hand, it is not Displacement Feedback or angle feed-back due to pressure cutoff valve, causes
When constant pressure is blocked, control stability is not good.Therefore, existing technology is easily interfered and controlled between there are two kinds of valve controls
The not good problem of stability.
The content of the invention
It is an object of the present invention to provide a kind of double ratio control structures of variable displacement motor.It has can eliminate each
Control valve between interfering and improves control valve control stability the characteristics of.
Technical scheme：A kind of double ratio control structures of variable displacement motor, including be connected through check valve with motor
Variable cylinder, proportional control valve and high pressure autocontrol valve；The high pressure autocontrol valve end is provided with high voltage control feedback bullet
Spring, high voltage control feedback spring is connected with the tail end of proportional control valve；The proportional control valve head end is provided with feedback spring, feedback
Spring is connected with variable cylinder, and proportional control valve is also connected by oil circuit with variable cylinder.
In a kind of double ratio control structures of foregoing variable displacement motor, the high pressure autocontrol valve includes being arranged on high pressure
Control valve core in autocontrol valve, control valve core is connected with high voltage control feedback spring, the control valve core end
It is additionally provided with high voltage control sensing spring.
In a kind of double ratio control structures of foregoing variable displacement motor, the feedback spring end is connected with feedback rod, instead
Feedback bar is connected with flow piston, and flow piston middle part is provided with driving lever, and driving lever is connected with swash plate, and swash plate is connected with rotor assembly, turns
Sub-component is connected with spindle assemblies；The proportional control valve head end is additionally provided with starting point regulation spring.
In a kind of double ratio control structures of foregoing variable displacement motor, the proportional control valve is electric proportional control valve, electricity
Proportional control valve includes electric proportional valve valve element, and electric proportional valve valve element tail end is provided with electromagnet, electric proportional valve valve element tail end and high pressure
Control feedback spring is connected, and electric proportional valve valve element head end is connected with feedback spring, and electric proportional valve valve element middle part is provided with valve element step.
In a kind of double ratio control structures of foregoing variable displacement motor, the proportional control valve is controlled for guide's hydraulic control ratio
Valve.
A kind of control method of double ratio control structures of foregoing variable displacement motor is realized, high pressure autocontrol valve is according to horse
It is that proportional control valve is adjusted or high pressure automatically controls valve regulation to control to adjust type up to inlet pressure.
In a kind of double proportional controlling meanses of foregoing variable displacement motor, it is to pass through that the high pressure automatically controls valve regulation process
The high voltage control feedback spring of proportional control valve tail end is arranged on, the motor oil inlet high pressure that high pressure autocontrol valve is subject to is made
For the feedback spring of proportional control valve, high pressure autocontrol valve is realized by disturbing the feedback spring elastic force of proportional control valve
Proportion adjustment process.
A kind of double proportional controlling meanses of foregoing variable displacement motor, the proportional control valve regulation is that electric proportional control valve is adjusted
Section；Double proportion adjustment processes that electric proportional control valve regulation and high pressure automatically control valve regulation composition are according to motor oil inlet pressure
Force value size, selection controls the movement of electric proportional valve valve element by electric current or motor inlet pressure, so that control variables
The movement of flow piston produces thrust to feedback spring in cylinder so that the electricity ratio that electric current or motor inlet pressure are controlled
Equilibrium relation is formed between the thrust that example valve core movement value and feedback spring are produced, and then is realized according to electric current or motor
Changing in ratio for inlet pressure carries out continuous, proportional regulation to motor displacement, final to realize double proportion adjustments.
In a kind of double proportional controlling meanses of foregoing variable displacement motor, when motor inlet pressure senses less than high voltage control
During the setting pretightning force of spring, certain current signal value, small end variable cylinder A normal open motor oil inlets, electric current are given to electromagnet
Value makes valve element step right side open (left side closings), holds enter hydraulic oil in variable cylinder B greatly, flow piston small displacement side upward
To movement, rotated by driving lever rotor driven component and cause variable, and the movement of flow piston can improve the compression to feedback spring
Power, the thrust forces the right side of valve element step to close (left side opening), discharges pressure oil in end variable cylinder B greatly, causes
Flow piston is in rotary moving to huge discharge direction downwards, and flow piston relaxes the thrust to feedback spring, by so several
After secondary repetitive control change, swash plate is ultimately in the corresponding discharge capacity that current signal value is specified and keeps balance；
In a kind of double proportional controlling meanses of foregoing variable displacement motor, when input current is constant, the pressure of motor oil inlet exceedes
When high voltage control senses the setting pretightning force of spring, high pressure automatically controls valve element and produces corresponding position according to the change of pressure value
Move, and then cause that high voltage control feedback spring produces corresponding compression spring force, high voltage control feedback spring is by compression spring
Power acts on electric proportional valve valve element so that motor inlet pressure is changed in poised state by high voltage control feedback spring
Feedback spring stress, cause the change of discharge capacity.
A kind of control method of double ratio control structures of foregoing variable displacement motor is realized, according to motor inlet pressure value
Size, selection controls the movement of ratio valve core by pilot control pressure or motor inlet pressure, so as to control to become
The movement of flow piston produces thrust to feedback spring in amount cylinder so that pilot control pressure or motor inlet pressure institute
Equilibrium relation is formed between the thrust that the movement value and feedback spring of the ratio valve core of control are produced, and then is realized according to elder generation
The change for leading control pressure or inlet pressure carries out continuous, proportional regulation to discharge capacity, realizes double proportion adjustments.
Compared with prior art, the present invention is controlled automatically by being superimposed one high pressure of setting in the valve element tail end of proportional control valve
The high voltage control feedback spring of valve processed, makes high pressure autocontrol valve reach high pressure autocontrol valve control experiencing motor oil inlet
During scope processed, high-voltage signal is acted on the valve element of proportional control valve active force by high voltage control feedback spring, ratio
Power then acts on control valve core the feedback spring of proportional control valve, i.e., by disturbing the feedback spring elastic force of proportional control valve
The ratio process that high pressure is automatically controlled is realized, because the high-voltage oil liquid in the present invention is only by the oil circuit of proportional control valve, is not had
Flowing through two control valves occurs the phenomenon of different throttles, therefore interfering in removing bivalve control process is asked
Topic；Again because the feedback spring that high pressure automatically controls the high voltage control feedback spring by its own to influence proportional control valve is made
Exert oneself to realize the Displacement Feedback function that high pressure is automatically controlled, therefore realize the ratio control process of high pressure autocontrol valve, its
Essence is that high pressure autocontrol valve passes through to influence and change the feedback spring power of proportional control valve, is realized indirectly and ratio control
Valve is noiseless and realizes the purpose of Auto-proportion control, improves stability when bivalve is controlled.In sum, the present invention has
Can eliminate each control valve between interfere and improves control valve control stability the characteristics of.
Brief description of the drawings
Fig. 1 is circuit controling drawing of the invention；
Fig. 2 is structure chart of the invention；
Fig. 3 is the partial enlarged drawing of Fig. 2；
Fig. 4 is current load and pressure-loaded figure；
Fig. 5 is variable curve map.
Description of symbols in accompanying drawing：1- motors, 2- variable cylinders, 3- proportional control valves, 4- high pressure autocontrol valves, 5- high pressures
Control feedback spring, 6- feedback springs, 7- feedback rods, 8- flow pistons, 9- driving levers, 10- swash plates, 11- rotor assembly, 12- master
Shaft assembly, 13- check valves, 14- starting points regulation spring, 15- valve element steps, 16- spring bases, 17- pressure springs seat, 18- is automatically controlled
Adjusting screw, the pressure self-controlled adjusting screws of 19-, 31- electric proportional valve valve elements, 32- electromagnet, 41- control valve cores, 42- high pressures
Perceived control answers spring, A- small end variable cylinders, the big end variable cylinders of B-.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples, but not as the foundation to present invention limitation.
Embodiment 1.A kind of double ratio control structures of variable displacement motor, are constituted as shown in Figures 1 to 5, including enter with motor 1
Variable cylinder 2, proportional control valve 3 and high pressure autocontrol valve 4 that hydraulic fluid port is connected through check valve 13；The high pressure autocontrol valve 4
End is provided with high voltage control feedback spring 5, and high voltage control feedback spring 5 is connected with the tail end of proportional control valve 3；The ratio control
The head end of valve processed 3 is provided with feedback spring 6, and feedback spring 6 is connected with variable cylinder 2, and proportional control valve 3 is also by oil circuit and variable cylinder 2
It is connected.
The high pressure autocontrol valve 4 includes the control valve core 41 being arranged in high pressure autocontrol valve 4, controls valve valve
Core 41 is connected with high voltage control feedback spring 5, and control valve core 41 end is additionally provided with high voltage control sensing spring 42.
The end of the feedback spring 6 is connected with feedback rod 7, and feedback rod 7 is connected with flow piston 8, and the middle part of flow piston 8 sets
There is driving lever 9, driving lever 9 is connected with swash plate 10, and swash plate 10 is connected with rotor assembly 11, and rotor assembly 11 is connected with spindle assemblies 12；
The head end of the proportional control valve 3 is additionally provided with starting point regulation spring 14.
The proportional control valve 3 is electric proportional control valve, and electric proportional control valve includes electric proportional valve valve element 31, electric proportional valve
The tail end of valve element 31 is provided with electromagnet 32, and the tail end of electric proportional valve valve element 31 is connected with high voltage control feedback spring 5, electric proportional valve valve element
31 head ends are connected with feedback spring 6, and the middle part of electric proportional valve valve element 31 is provided with valve element step 15.
The end of the feedback spring 6 is connected with spring base 16, and electric proportional control valve is provided with pressure self-controlled adjusting screw 19,
High pressure autocontrol valve 4 is provided with automatically controlled adjusting screw 18 and pressure spring seat 17, high voltage control feedback spring 5 and high voltage control
Sensing spring 42 is connected with pressure spring seat 17.
High pressure autocontrol valve 5 according to motor inlet pressure control to adjust type be proportional control valve adjust or high pressure from
Dynamic control valve regulation；It is the high voltage control by being arranged on the tail end of proportional control valve 3 that the high pressure automatically controls valve regulation process
Feedback spring 5, the motor oil inlet high pressure that high pressure autocontrol valve 4 is subject to acts on the feedback spring 6 of proportional control valve 3,
The proportion adjustment process of high pressure autocontrol valve 4 is realized by disturbing the elastic force of feedback spring 6 of proportional control valve 4.
A kind of control method of double ratio control structures of variable displacement motor, electric proportional control valve regulation and high pressure are automatically controlled
Double proportion adjustment processes that valve regulation is constituted are that, according to motor inlet pressure value size, selection passes through electric current or motor oil-feed
Mouthful pressure controls the movement of electric proportional valve valve element 31, so that the movement of flow piston 8 is to feedback spring 6 in control variables cylinder 2
Produce thrust so that the movement value of electric proportional valve valve element 31 that electric current or motor inlet pressure are controlled and feedback spring 6
Form equilibrium relation between the thrust of generation, and then realize changing right in ratio according to electric current or motor inlet pressure
Motor displacement carries out continuous, proportional regulation, final to realize double proportion adjustments.
When motor inlet pressure senses the setup pressure value of spring 42 less than high voltage control, then entirely control with electric ratio
Control valve control accounts for leading；When motor inlet pressure exceedes the setup pressure value that high voltage control senses spring 42, then whole control
System accounts for leading with the control of the ratio of high pressure autocontrol valve 4.Whole rate variable process is referring to shown in Fig. 4.
When motor inlet pressure senses the setting pretightning force of spring less than high voltage control, electromagnet 32 is given necessarily
Current signal value, small end variable cylinder A normal open motor oil inlets, current value makes the right side of valve element step 15 open (left side closing), greatly
Hold and enter hydraulic oil in variable cylinder B, the small displacement direction movement upward of flow piston 8 is revolved by the rotor driven component 11 of driving lever 9
Quote variable, and flow piston 8 moves the thrust that can be improved to feedback spring 6, the thrust forces valve element step 15
(left side opening) is closed on right side, discharges pressure oil in end variable cylinder B greatly, causes flow piston 8 downwards to huge discharge direction
In rotary moving, flow piston 8 relaxes the thrust to feedback spring 6, after so repetitive control changes several times, swash plate 10
It is ultimately in the corresponding discharge capacity that current signal value is specified and keeps balance.
When input current is constant, when the pressure of motor oil inlet exceedes the setting pretightning force of high voltage control sensing spring 42,
Control valve core 41 produces corresponding displacement according to the change of pressure value, and then causes that high voltage control feedback spring 5 produces phase
Compression spring force is acted on electric proportional valve valve element 31 by corresponding compression spring force, high voltage control feedback spring 5 so that motor enters
Hydraulic fluid port pressure changes the stress of the feedback spring 6 in poised state by high voltage control feedback spring 5, causes the change of discharge capacity
Change.
Completed because two valve control functions are merged into a valve control, the feedback spring 6 and height of electric proportional control valve are voltage-controlled
Feedback spring processed 5 is acted on same electric proportional valve valve element 31, no longer in the presence of the unfavorable interference effect between two valve controls；
Enable that two kinds of control modes are mutually coordinated, variable interference does not occur from each other.
Embodiment 2.A kind of double ratio control structures of variable displacement motor, including be connected through check valve 13 with the oil inlet of motor 1
Variable cylinder 2, proportional control valve 3 and high pressure autocontrol valve 4；It is anti-that the end of high pressure autocontrol valve 4 is provided with high voltage control
Feedback spring 5, high voltage control feedback spring 5 is connected with the tail end of proportional control valve 3；The head end of the proportional control valve 3 is provided with feedback
Spring 6, feedback spring 6 is connected with variable cylinder 2, and proportional control valve 3 is also connected by oil circuit with variable cylinder 2.
The proportional control valve 3 is guide's hydraulic control proportional control valve.
The proportional control valve 3 is to include being arranged on the ratio valve core in proportional control valve, ratio valve core tail end with
High voltage control feedback spring 5 is connected, and ratio valve core head end is connected with feedback spring 6.
The ratio valve core head end is additionally provided with starting point regulation spring 32.
The end of the feedback spring 6 is connected with feedback rod 7, and feedback rod 7 is connected with flow piston 8, and the middle part of flow piston 8 sets
There is driving lever 9, driving lever 9 is connected with swash plate 10, and swash plate 10 is connected with rotor assembly 11, and rotor assembly 11 is connected with spindle assemblies 12.
The high pressure autocontrol valve 4 includes the control valve core 41 being arranged in high pressure autocontrol valve 4, controls valve valve
Core 41 is connected with high voltage control feedback spring 5, and control valve core 41 end is additionally provided with high voltage control sensing spring 42.
The feedback spring end is connected with spring base 16, and proportional control valve is provided with pressure self-controlled adjusting screw 19, high
Pressure autocontrol valve is provided with automatically controlled adjusting screw 18 and pressure spring seat 17, high voltage control feedback spring 5 and high voltage control sense
Spring 42 is answered to be connected with pressure spring seat 17.
The control method of double ratio control structures of a kind of variable displacement motor, according to motor inlet pressure value size, selection
The movement of ratio valve core is controlled by pilot control pressure or motor inlet pressure, so that flow in control variables cylinder
The movement of piston produces thrust to feedback spring so that the ratio that pilot control pressure or motor inlet pressure are controlled
Equilibrium relation is formed between the thrust that the movement value and feedback spring of valve core are produced, and then is realized according to pilot control pressure
Or the change of inlet pressure carries out continuous, proportional regulation to discharge capacity, double proportion adjustments are realized.
Claims (10)
1. double ratio control structures of a kind of variable displacement motor, it is characterised in that：Including with motor（1）Through check valve（13）Connection
Variable cylinder（2）, proportional control valve（3）With high pressure autocontrol valve（4）；The high pressure autocontrol valve（4）End is provided with high pressure
Control feedback spring（5）, high voltage control feedback spring（5）With proportional control valve（3）Tail end be connected；The proportional control valve
（3）Head end is provided with feedback spring（6）, feedback spring（6）With variable cylinder（2）It is connected, proportional control valve（3）Also by oil circuit and change
Amount cylinder（2）It is connected.
2. double ratio control structures of a kind of variable displacement motor according to claim 1, it is characterised in that：The high pressure is automatic
Control valve（4）Including being arranged on high pressure autocontrol valve（4）Interior control valve core（41）, control valve core（41）It is voltage-controlled with height
Feedback spring processed（5）It is connected, the control valve core（41）End is additionally provided with high voltage control sensing spring（42）.
3. double ratio control structures of a kind of variable displacement motor according to claim 1, it is characterised in that：The feedback spring
（6）End is connected with feedback rod（7）, feedback rod（7）It is connected with flow piston（8）, flow piston（8）Middle part is provided with driving lever（9）,
Driving lever（9）It is connected with swash plate（10）, swash plate（10）It is connected with rotor assembly（11）, rotor assembly（11）It is connected with spindle assemblies
（12）；The proportional control valve（3）Head end is additionally provided with starting point regulation spring（14）.
4. double ratio control structures of a kind of variable displacement motor according to claim 1, it is characterised in that：The ratio control
Valve（3）It is electric proportional control valve, electric proportional control valve includes electric proportional valve valve element（31）, electric proportional valve valve element（31）Tail end is provided with
Electromagnet（32）, electric proportional valve valve element（31）Tail end and high voltage control feedback spring（5）It is connected, electric proportional valve valve element（31）Head end
With feedback spring（6）It is connected, electric proportional valve valve element（31）Middle part is provided with valve element step（15）.
5. double ratio control structures of a kind of variable displacement motor according to claim 1, it is characterised in that：The ratio control
Valve（3）It is guide's hydraulic control proportional control valve.
6. a kind of control method of double ratio control structures of variable displacement motor described in claim 1 is realized, it is characterised in that：It is high
It is that proportional control valve is adjusted or high pressure autocontrol valve is adjusted that pressure autocontrol valve controls to adjust type according to motor inlet pressure
Section.
7. double proportional controlling meanses of a kind of variable displacement motor according to claim 6, it is characterised in that：The high pressure is automatic
The process for controlling valve regulation is the high voltage control feedback spring by being arranged on proportional control valve tail end, by high pressure autocontrol valve
The motor oil inlet high pressure being subject to acts on the feedback spring of proportional control valve, by the feedback spring bullet for disturbing proportional control valve
Power realizes the proportion adjustment process of high pressure autocontrol valve.
8. double proportional controlling meanses of a kind of variable displacement motor according to claim 6, it is characterised in that：The ratio control
Valve regulation is electric proportional control valve regulation；Electric proportional control valve regulation and high pressure automatically control double proportion adjustments of valve regulation composition
Process is that, according to motor inlet pressure value size, selection controls electric proportional valve valve by electric current or motor inlet pressure
The movement of core, so that the movement of flow piston produces thrust to feedback spring in control variables cylinder so that electric current or motor
Equilibrium relation is formed between the thrust that the electric proportional valve valve element movement value and feedback spring that inlet pressure is controlled are produced, is entered
And realize carrying out continuous, proportional tune to motor displacement according to electric current or changing in ratio for motor inlet pressure
Section, it is final to realize double proportion adjustments.
9. double proportional controlling meanses of a kind of variable displacement motor according to claim 8, it is characterised in that：When motor oil inlet
When pressure senses the setting pretightning force of spring less than high voltage control, certain current signal value, small end variable cylinder A are given to electromagnet
Normal open motor oil inlet, current value makes valve element step right side open (left side closing), and hydraulic oil is entered in big end variable cylinder B, flows
The small displacement direction movement upward of amount piston, causes variable, and flow piston to move by the way that driving lever rotor driven component is in rotary moving
The dynamic thrust that can be improved to feedback spring, the thrust forces the right side of valve element step to close (left side opening), becomes big end
Pressure oil is discharged in amount cylinder B, causes flow piston in rotary moving to huge discharge direction downwards, and flow piston is relaxed to feedback
The thrust of spring, by after so repetitive control change several times, swash plate is ultimately at the corresponding discharge capacity that current signal value is specified
Go up and keep balance.
10. double proportional controlling meanses of a kind of variable displacement motor according to claim 8, it is characterised in that：Work as input current
Constant, when the pressure of motor oil inlet exceedes the setting pretightning force of high voltage control sensing spring, control valve core is according to pressure value
Change produce corresponding displacement, and then cause that high voltage control feedback spring produces corresponding compression spring force, it is high voltage-controlled
Compression spring force is acted on electric proportional valve valve element by feedback spring processed so that motor inlet pressure feeds back bullet by high voltage control
Spring changes the stress of the feedback spring in poised state, causes the change of discharge capacity.
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| CN201611215280.3A CN106762970B (en) | 2016-12-26 | 2016-12-26 | A kind of double ratio control structures and control method of variable displacement motor |
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| CN201611215280.3A CN106762970B (en) | 2016-12-26 | 2016-12-26 | A kind of double ratio control structures and control method of variable displacement motor |
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| CN108266421A (en) * | 2017-12-08 | 2018-07-10 | 中国航空工业集团公司成都飞机设计研究所 | A kind of big load high-speed hydraulic motor swash plate adjusting method for aircraft |
| CN110486339A (en) * | 2019-08-27 | 2019-11-22 | 徐州重型机械有限公司 | Motor control system and crane |
| CN111691923A (en) * | 2020-06-19 | 2020-09-22 | 中航力源液压股份有限公司 | Straight-shaft type axial plunger variable motor device with constant pressure control |
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| CN103291674A (en) * | 2013-05-31 | 2013-09-11 | 武汉船用机械有限责任公司 | Hydraulic lifting control system |
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| CN203532367U (en) * | 2013-09-11 | 2014-04-09 | 中航力源液压股份有限公司 | Multi-gear power control variable displacement piston pump |
| CN103671330A (en) * | 2013-12-27 | 2014-03-26 | 龙工（上海）精工液压有限公司 | Hydraulic tilting-axis motor variable control mechanism |
| CN104500480A (en) * | 2014-12-29 | 2015-04-08 | 中航力源液压股份有限公司 | High-pressure automatic variable control method with hydraulic overload and control valve device |
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| CN105649964A (en) * | 2015-12-28 | 2016-06-08 | 山东科技大学 | Constant-power adjusting system for spiral serial-parallel convertible duplex axial plunger pump |
| CN106194680A (en) * | 2016-08-28 | 2016-12-07 | 中航力源液压股份有限公司 | The axial plunger pump installation of a kind of high accuracy electric proportional control and control method |
| CN206338282U (en) * | 2016-12-26 | 2017-07-18 | 中航力源液压股份有限公司 | A kind of double ratio control structures of variable displacement motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108266421A (en) * | 2017-12-08 | 2018-07-10 | 中国航空工业集团公司成都飞机设计研究所 | A kind of big load high-speed hydraulic motor swash plate adjusting method for aircraft |
| CN110486339A (en) * | 2019-08-27 | 2019-11-22 | 徐州重型机械有限公司 | Motor control system and crane |
| CN111691923A (en) * | 2020-06-19 | 2020-09-22 | 中航力源液压股份有限公司 | Straight-shaft type axial plunger variable motor device with constant pressure control |
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Application publication date: 20170531 Assignee: Suzhou Liyuan Hydraulic Co.,Ltd. Assignor: AVIC LIYUAN HYDRAULIC Co.,Ltd. Contract record no.: X2023520000006 Denomination of invention: A Dual Proportional Control Structure and Control Method for Variable Motor Granted publication date: 20190628 License type: Exclusive License Record date: 20230606 |
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