CN206338282U - A kind of double ratio control structures of variable displacement motor - Google Patents
A kind of double ratio control structures of variable displacement motor Download PDFInfo
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- CN206338282U CN206338282U CN201621434054.XU CN201621434054U CN206338282U CN 206338282 U CN206338282 U CN 206338282U CN 201621434054 U CN201621434054 U CN 201621434054U CN 206338282 U CN206338282 U CN 206338282U
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Abstract
The utility model discloses a kind of double ratio control structures of variable displacement motor, including with motor（1）Through check valve（13）The variable cylinder of connection（2）, proportional control valve（3）With high pressure autocontrol valve（4）；The high pressure autocontrol valve（4）End 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, proportional control valve（3）Also pass through oil circuit and variable cylinder（2）It is connected.The utility model has the characteristics of can eliminating the control stability for interfering and improving control valve between each control valve.
Description
Technical field
The utility model is related 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 a variety of demands of the main frame to motor control, it is existing that there is double control
Variable displacement motor in HD1D (guide's hydraulic control plus-pressure is blocked) and EP2D (electric proportional control plus-pressure is blocked) be major control
Mode, both control modes use series design, therefore can not 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
It is that, because meeting is because its throttle is different when high-voltage oil liquid passes through first control valve, cause constant pressure valve operating point to change, this
It is two valves the problem of interfering；On the other hand, because pressure cutoff valve is not Displacement Feedback or angle feed-back, cause
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 problem of stability is not good.
Utility model content
The purpose of this utility model is double ratio control structures there is provided a kind of variable displacement motor.It, which has, to eliminate
The characteristics of each controls the control stability for interfering and improving control valve between valve.
The technical solution of the utility model：A kind of double ratio control structures of variable displacement motor, including with motor through check valve
Variable cylinder, proportional control valve and the high pressure autocontrol valve of connection；The high pressure autocontrol valve end is anti-provided with high voltage control
Spring is presented, 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 proportional control valve includes being arranged on ratio control
Ratio valve core in valve, ratio valve core tail end is connected with high voltage control feedback spring, ratio valve core head end and feedback bullet
Spring is connected.
In a kind of double ratio control structures of foregoing variable displacement motor, the ratio valve core head end is additionally provided with starting point regulation
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, which is connected with the middle part of flow piston, flow piston, 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.
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 proportional control valve is electric proportional control valve or liquid
Control proportional control valve.
Compared with prior art, the utility model in the superposition of proportional control valve valve element tail end by setting a high pressure automatic
The high voltage control feedback spring of valve is controlled, high pressure autocontrol valve is reached that high pressure automatically controls scope experiencing motor inlet
When, high-voltage signal is acted on active force on the proportional control valve core of proportional control valve by high voltage control feedback spring, than
Example control valve element valve element then acts on power the feedback spring of proportional control valve, the i.e. feedback spring by disturbing proportional control valve
Elastic force realizes the ratio process that high pressure is automatically controlled, because the high-voltage oil liquid in the utility model only passes through the oil of proportional control valve
Road, occurs the phenomenon of different throttles, therefore remove mutual in bivalve control process without two control valves are flowed through
Interference problem；Again because the control of high pressure autocontrol valve passes through the high voltage control feedback spring of its own to influence proportional control valve
Feedback spring active force realize Displacement Feedback function that high pressure is automatically controlled, therefore realize the ratio of high pressure autocontrol valve
Control process, its essence is high pressure autocontrol valve by influenceing and changing the feedback spring power of proportional control valve, indirect realization
And proportional control valve is noiseless and realizes the purpose of Auto-proportion control so that two kinds of control modes can be mutually coordinated, mutually
Between variable interference does not occur, improve bivalve control stability.In summary, the utility model, which has, can eliminate each
The characteristics of controlling the control stability for interfering and improving control valve between valve.
Brief description of the drawings
Fig. 1 is circuit controling drawing of the present utility model；
Fig. 2 is structure chart of the present utility model；
Fig. 3 is Fig. 2 partial enlarged drawing；
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- electromagnet, 15- ratio valve core working banks, 16- spring bases, 17- pressure springs seat, 18-
Automatically controlled adjusting screw, the pressure self-controlled adjusting screws of 19-, 31- ratio valve cores, 32- starting points regulation spring, 41- control valve cores,
42- high voltage controls sense spring, A- small end variable cylinders, the big end variable cylinders of B-.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but is limited not as to the utility model
Foundation.
Embodiment 1.A kind of double ratio control structures of variable displacement motor, are constituted as shown in Figures 1 to 5, including go out 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 3 processed is provided with feedback spring 6, and feedback spring 6 is connected with variable cylinder 2, and proportional control valve 3 also passes through oil circuit and variable cylinder 2
It is connected.
The proportional control valve 3 is electric proportional control valve, and electric proportional control valve includes being arranged in electric proportional control valve
Electric proportional valve valve element, electric proportional valve valve element tail end is provided with the middle part of electromagnet 14, electric proportional valve valve element provided with the work of ratio valve core
Step 15, electric proportional valve valve element tail end is connected with high voltage control feedback spring 5, electric proportional valve valve element head end and the phase of feedback spring 6
Even.
The electric proportional valve valve element head end is additionally provided with starting point regulation spring 32.
The end of 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 is set
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 element 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 electric 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
Sensing spring 42 is connected with pressure spring seat 17.
Operation principle of the present utility model：When motor oil-out pressure senses the setting pretension of spring 42 less than high voltage control
During power, high pressure autocontrol valve 4 is inoperative.When giving certain current signal value, small end variable cylinder A normal open motors enter
Mouthful, current value makes the right side of ratio valve core working bank 15 in the middle part of the electric proportional valve valve element on electric proportional control valve open (left
Side closure), make to hold greatly and enter hydraulic oil in variable cylinder B, flow piston 8 upward move by small displacement direction, is driven by driving lever 9
The rotation of rotor assembly 11 causes variable, and the movement of flow piston 8 makes the thrust raising to feedback spring 6, and the thrust is forced
(left side opening) is closed on the right side of the ratio valve core working bank 15 of proportional control valve core 31, makes the pressure in big end variable cylinder B
Power oil is discharged, and causes flow piston 8 to be rotated to huge discharge direction downwards, flow piston 8 relaxes the compression of feedback spring 6
Power, therefore the ratio valve core working bank 15 of electric proportional control valve element, after so repetitive control change several times, swash plate 10 is most
Eventually in the corresponding discharge capacity that current signal value is specified and keep balance.
When input current is constant, the pressure of motor oil inlet is because load-reason causes inlet pressure to exceed high voltage control sense
When answering the setting pretightning force of spring 42, according to different pressure sizes control valve core 41 will be caused to produce different displacements
Amount, pressure is higher, and displacement is bigger；The displacement can act on high voltage control feedback spring 5, and high voltage control feedback spring 5
The other end be connected on electric proportional valve valve element, this indicates that different inlet pressures can be fed back by high voltage control
Spring 5, the stress to the feedback spring 6 in poised state is changed；It is left that this just changes electric proportional control valve core
The stress balance at right two ends, necessarily causes the change of discharge capacity；When ratio change is presented in the size of pressure, the discharge capacity of motor is also corresponding
Carry out rate variable so that realize motor Automatic high pressure proportional control variable function.
Because two valve control functions are merged into a valve control completion, feedback spring 6 and high pressure automatically control feedback spring 5
Act on an electric proportional valve valve element, no longer in the presence of the unfavorable interference effect between two valve controls；So that two kinds of controlling parties
Formula can be mutually coordinated, does not occur variable interference from each other.
On above-mentioned basis, when electromagnet input current increases, as long as motor inlet pressure is automatic less than high pressure
The pressure value of valve setting is controlled, then whole control accounts for leading with electric proportional control；When motor inlet pressure is increased beyond high pressure certainly
The pressure value of dynamic control valve setting, then whole control accounts for leading with high pressure autocontrol valve；When motor inlet pressure is decreased up to
When below pressure set points, then come back to electric proportional control and dominate process.Whole rate variable process is referring to shown in Fig. 4.
Embodiment 2.A kind of double ratio control structures of variable displacement motor, including the variable being connected with motor 1 through check valve 13
Cylinder 2, proportional control valve 3 and high pressure autocontrol valve 4；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 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 includes the ratio valve core 31 being arranged in proportional control valve 3, the tail end of ratio valve core 31
It is connected with high voltage control feedback spring 5, the head end of ratio valve core 31 is connected with feedback spring 6.
The head end of ratio valve core 31 is additionally provided with starting point regulation spring 32.
The end of 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 is set
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
Autocontrol valve is pressed to be 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.
Angle of cyd in the accompanying drawing 5 are the inclination angle of rotor assembly：25 ° are maximum pump discharge angle, and 15.5 ° are minimum
Discharge capacity set angle.
Claims (6)
1. a kind of double ratio control structures 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 with becoming
Measure cylinder（2）It is connected.
2. a kind of double ratio control structures of variable displacement motor according to claim 1, it is characterised in that：The ratio control
Valve（3）Including being arranged on proportional control valve（3）Interior ratio valve core（31）, ratio valve core（31）Tail end is anti-with high voltage control
Present spring（5）It is connected, ratio valve core（31）Head end and feedback spring（6）It is connected.
3. a kind of double ratio control structures of variable displacement motor according to claim 2, it is characterised in that：The proportioning valve valve
Core（31）Head end is additionally provided with starting point regulation spring（32）.
4. a kind of double ratio control structures 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）.
5. a kind of double ratio control structures 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）.
6. a kind of double ratio control structures of variable displacement motor according to claim 1, it is characterised in that：The ratio control
Valve（3）For electric proportional control valve or hydraulic control proportional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621434054.XU CN206338282U (en) | 2016-12-26 | 2016-12-26 | A kind of double ratio control structures of variable displacement motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621434054.XU CN206338282U (en) | 2016-12-26 | 2016-12-26 | A kind of double ratio control structures of variable displacement motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206338282U true CN206338282U (en) | 2017-07-18 |
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ID=59301257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621434054.XU Active CN206338282U (en) | 2016-12-26 | 2016-12-26 | A kind of double ratio control structures of variable displacement motor |
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| Country | Link |
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| CN (1) | CN206338282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762970A (en) * | 2016-12-26 | 2017-05-31 | 中航力源液压股份有限公司 | Double ratio control structures and control method of a kind of variable displacement motor |
-
2016
- 2016-12-26 CN CN201621434054.XU patent/CN206338282U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762970A (en) * | 2016-12-26 | 2017-05-31 | 中航力源液压股份有限公司 | Double ratio control structures and control method of a kind of variable displacement motor |
| CN106762970B (en) * | 2016-12-26 | 2019-06-28 | 中航力源液压股份有限公司 | A kind of double ratio control structures and control method of variable displacement motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Liyuan Hydraulic Co.,Ltd. Assignor: AVIC LIYUAN HYDRAULIC Co.,Ltd. Contract record no.: X2023520000020 Denomination of utility model: A Dual Proportional Control Structure for Variable Motor Granted publication date: 20170718 License type: Exclusive License Record date: 20230625 |
|
| EE01 | Entry into force of recordation of patent licensing contract |