CN100588837C - Plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil dispensing subassembly - Google Patents
Plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil dispensing subassembly Download PDFInfo
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- CN100588837C CN100588837C CN200710069710A CN200710069710A CN100588837C CN 100588837 C CN100588837 C CN 100588837C CN 200710069710 A CN200710069710 A CN 200710069710A CN 200710069710 A CN200710069710 A CN 200710069710A CN 100588837 C CN100588837 C CN 100588837C
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Abstract
The invention relates to an oil matching mechanism for a hydraulic motor, which aims at providing a plunger type quantitative hydraulic motor liquid switch torque-converting and oil-matching component. The oil-matching component comprises plungers, an oil-matching valve group and a liquid torque-converting driving mechanism, wherein, the oil matching valve group is composed of integrated valves ofidentical number of the plungers; each integrated valve is composed of a high-speed switch high pressure oil supplying valve and a corresponding high-speed switch oil discharging/complementing valve;each high speed switch oil discharging/complementing valve is provided with an oil return hole, and each high speed switch high pressure oil supplying valve is provided with a pressure oil hole; thetail part of a push and pull rod penetrates out of a spring cavity of the high speed switch high pressure oil supplying valve and is connected with the liquid torque-converting driving mechanism; theliquid torque-converting driving mechanism is used for driving the integrated valves to work. The hydraulic motor has the advantages that the torque-converting control of the switch can be realized; alarge quantity of energy consumption can be saved; the driving pressure of the hydraulic motor is greatly improved.
Description
Technical field
The present invention relates to the oil hydraulic motor oil distribution mechanism, in particular, relate to a kind of plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component.
Background technique
Thereby plunger piston hydraulic motor is to rely on pressure oil to act on to make motor output shaft obtain certain torque on the plunger, for plunger can alternately be communicated with pressure hydraulic fluid port and return opening, must adopt flow distribution apparatus, plunger piston hydraulic motor adopts valve plate distribution more at present, and the main devices that is adopted in the valve plate distribution is exactly an oil distribution casing.The similar plate valve of oil distribution casing, be fitted in the cylinder body end face that has assignment hole by plane with two arcs (" waist shape ") window, make cylinder body and oil distribution casing relative rotation on face perpendicular to motor drive shaft, the relative position of window on the oil distribution casing and the perforate of cylinder body end face is arranged according to certain rules, so that be in plunger case in fuel feeding or the oil extraction stroke can replace with the motor body on confession, oil extraction communicates, and guarantees isolation and sealing between each oil pocket.Because relative rotation between oil distribution casing and the cylinder body, therefore wearing and tearing form the end clearance mutually, the leakage of oil hydraulic motor is just mainly revealed from the end face between oil distribution casing and the cylinder body, and the end face of oil hydraulic motor is revealed the major obstacle that becomes present restriction oil hydraulic motor working pressure.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component is provided.
In order to overcome the above problems, the present invention is achieved through the following technical solutions.
A kind of plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component comprises plunger, comprises that also oil distributing valve group and machine liquid become torque driving mechanism, and described oil distributing valve group is by forming with the one valve of number of plungers equal number; Each one valve is made of a speed-sensitive switch high-pressure oil feed valve and corresponding speed-sensitive switch oil extraction/Fill valve, the speed-sensitive switch high-pressure oil feed valve in the one valve and the valve port of speed-sensitive switch oil extraction/Fill valve are provided with face-to-face, and the end face of two spools leaves and can supply the space of the pull bar head activity of pull bar; The spring chamber of each speed-sensitive switch oil extraction/Fill valve all is communicated with corresponding plunger cavity, can lead in the middle of the spool of each speed-sensitive switch oil extraction/Fill valve, plunger cavity is communicated with the spool end of speed-sensitive switch high-pressure oil feed valve by the spool of spring chamber and speed-sensitive switch oil extraction/Fill valve; Described each speed-sensitive switch oil extraction/Fill valve is provided with return opening, and described each speed-sensitive switch high-pressure oil feed valve is provided with the pressure hydraulic fluid port;
The afterbody of described pull bar passes from the spring chamber of speed-sensitive switch high-pressure oil feed valve, becomes torque driving mechanism with machine liquid and links to each other; The pull bar head is between the end face of two spools;
Described machine liquid becomes torque driving mechanism and is made up of pull bar driving ring, bearing and inclination angle adjustor; Described pull bar driving ring is installed in the pull bar side of oil distributing valve group, and the centre of pull bar driving ring also is provided with endoporus; Described Bearing Installation is in the side of pull bar driving ring back to the oil distributing valve group; Described inclination angle adjustor is installed in the side of bearing back to the pull bar driving ring.
As a kind of improvement, the contact position place in pull bar and speed-sensitive switch high-pressure oil feed valve spring chamber also is provided with seal ring.
As a kind of improvement, uniform hole of counting equal number with plunger is corresponding one by one with the position of pull bar in the oil distributing valve group around the described pull bar driving ring, is connected by dowel fixes between pull bar and each hole.
As a kind of improvement, described inclination angle adjustor comprises a radial regulation piece and a tilt adjustment piece, the tilt adjustment piece is positioned at the bearing side, be slidingly connected with the cylndrical surface between two regulating blocks, and relying on the hydraulic coupling come from the bearing side to be fixed, the center line of cylndrical surface and the glide direction of radial regulation piece all are radially and mutual vertical.
A kind of change torque control method that is applicable to the plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component is characterized in that, may further comprise the steps:
(1), regulates the distance of radial regulation piece Off center position in the inclination angle adjustor, in order to change dutycycle switching time of each speed-sensitive switch high-pressure oil feed valve according to requirement to the output loading size;
(2) opening time of control speed-sensitive switch high-pressure oil feed valve, even make corresponding plunger in the oil suction stage, the plunger oil pocket that also has only part-time pressure oil to enter by speed-sensitive switch high-pressure oil feed valve promotes the plunger acting;
All the other time plunger oil pockets in oil suction stage are the speed-sensitive switch oil extraction/Fill valve by communicating with return opening all, directly from the return opening oil suction, replenish the cavity that plunger motion produces, but can not promote the plunger acting, guarantee that average output torque is directly proportional with the dutycycle of displacement in whole plunger oil suction stroke of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger;
(3) by the real-time regulated to displacement dutycycle in whole plunger oil suction stroke of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger, the average torque that output is directly proportional with dutycycle is realized becoming moment of torsion and is controlled; Pass between dutycycle and the average torque is:
Dutycycle=X
Open* 2n=T/ (D * P * η
Machine* η
Valve),
Pass between pushrod movement amplitude x and the dutycycle is:
Dutycycle=X
Open* 2n=arccos (x0/x)/90 °,
The radial regulation piece leaves the side-play amount y of its middle position and the pass between the pushrod movement amplitude x is:
x＝y×tg(α/2)；
Wherein: X
OpenBe the plunger displacement in the speed-sensitive switch high-pressure oil feed valve opening time section, n is the rotating speed of oil hydraulic motor, the average torque of T for needing to obtain, and D is the discharge capacity of oil hydraulic motor, P is the pressure of pressure hydraulic fluid port, η
MachineBe the mechanical efficiency of oil hydraulic motor, η
ValveBe the efficient of oil distributing valve group control plunger cavity, x0 is the gap length that pull bar head and speed-sensitive switch high-pressure oil feed valve end face are reserved, and α is that the cylndrical surface of radial regulation piece extends to the radian that pull bar distribution circle diametrical position place produces.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention passes through the real-time regulated to displacement dutycycle in whole plunger oil suction stroke of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger, and the average torque that output is directly proportional with dutycycle has realized that switch becomes moment of torsion control.
(2) when load torque is less, though its part plunger is in the oil suction district, but still from the return opening oil suction, and do not need pressure oil is wasted on the extra throttling control valve mouth, thereby saved a large amount of energy consumptions.
(3) oil distributing valve group of the present invention is directly installed on the oil hydraulic motor plunger cylinder end face, has replaced traditional oil distribution casing, owing to do not had slide relative between oil distributing valve group and the oil hydraulic motor plunger cylinder end face, has therefore improved the driving pressure of oil hydraulic motor greatly.
Description of drawings
Fig. 1 is a specific embodiment of the invention schematic representation.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is plunger position of the present invention and action flow chart.
Fig. 4 is a specific embodiment of the invention structural representation.
Among the figure, 1 pull bar, 2 speed-sensitive switch high-pressure oil feed valves, 3 speed-sensitive switch oil extraction/Fill valves, 4 oil hydraulic motor plunger cylinders, 5 plunger cavities, 6 plungers, 7 pull bar driving rings, 8 bearings, 9 inclination angle adjustors, 10 output shafts, 11 pressure hydraulic fluid ports, 12 return openings, 13 drain taps, 14 rotating sleeves, 15 motor casings, 24 speed-sensitive switch high-pressure oil feed valve valve ports, 28 speed-sensitive switches oil extraction/Fill valve valve port, 25 speed-sensitive switch high-pressure oil feed valve cores, 26 speed-sensitive switches oil extraction/Fill valve spool, 27 speed-sensitive switches oil extraction/Fill valve spring chamber, 29 speed-sensitive switch high-pressure oil feed valve spring chambeies, 30 drive plates, 31 pull bar heads, 32 inclined shafts, 33 seal rings, 34 pins.
Embodiment
In conjunction with the accompanying drawings, the present invention is described in detail below by specific embodiment.
Specific embodiments of the invention have specifically been discussed a kind of oil hydraulic motor that has adopted machine liquid switch torque-changing oil dispensing subassembly provided by the invention when saying something, be described in detail as follows:
A kind ofly adopted machine liquid switch of joining valve assembly provided by the invention to become moment of torsion to join the quantitative plunger piston hydraulic motor of oil type rotating cylinder cartridge type, comprise motor casing, plunger and drive plate, comprise that also oil distributing valve group and machine liquid become torque driving mechanism, the oil distributing valve group is by forming with the one valve of number of plungers equal number; Each one valve is made of a speed-sensitive switch high-pressure oil feed valve and corresponding speed-sensitive switch oil extraction/Fill valve, the speed-sensitive switch high-pressure oil feed valve in the one valve and the valve port of speed-sensitive switch oil extraction/Fill valve are provided with face-to-face, and the end face of two spools leaves and can supply the space of the pull bar head activity of pull bar; The spring chamber of each speed-sensitive switch oil extraction/Fill valve all is communicated with corresponding plunger cavity, can lead in the middle of the spool of each speed-sensitive switch oil extraction/Fill valve, plunger cavity is communicated with the spool end of speed-sensitive switch high-pressure oil feed valve by the spool of spring chamber and speed-sensitive switch oil extraction/Fill valve; Each speed-sensitive switch oil extraction/Fill valve is provided with return opening, and each speed-sensitive switch high-pressure oil feed valve is provided with the pressure hydraulic fluid port;
The afterbody of pull bar passes from the spring chamber of speed-sensitive switch high-pressure oil feed valve, becomes torque driving mechanism with machine liquid and links to each other; The pull bar head is between the end face of two spools; Contact position place in pull bar and speed-sensitive switch high-pressure oil feed valve spring chamber also is provided with seal ring.
Each plunger in this specific embodiment is controlled separately by corresponding with it one valve in the oil distributing valve group, and the one valve becomes torque driving mechanism by special machine liquid and drives.
In the oil distributing valve group based on the bi-directional drive pull bar, be used to control the speed-sensitive switch high-pressure oil feed valve of same plunger and the valve port of speed-sensitive switch oil extraction/Fill valve is arranged face-to-face, but the end face of two spools is reserved certain space, spring chamber is positioned at both sides.Speed-sensitive switch oil extraction/Fill valve is positioned at the plunger case side, and its spring chamber directly is communicated with plunger cavity, also all gets through in the middle of its spool, and plunger cavity can be communicated with the spool end of speed-sensitive switch high-pressure oil feed valve by spring chamber and spool.The afterbody of pull bar passes from the spring chamber of speed-sensitive switch high-pressure oil feed valve, links machine liquid and becomes on the torque driving mechanism.The pull bar head then is positioned at the centre of two valve valve ports, can push speed-sensitive switch oil extraction/Fill valve open in the time of the plunger case lateral movement, then can push speed-sensitive switch high-pressure oil feed valve conversely when machine liquid becomes the torque driving mechanism lateral movement open.When pull bar passes the spring chamber of speed-sensitive switch high pressure confession valve, before and after it reliable sealing is arranged all, guarantee that its head is in the change pressure environment of plunger cavity, the middle part is in the charge oil pressure hyperbaric environment of spring chamber, and afterbody is in the environment under low pressure of oil return.When pull bar was positioned at meta, the reset position of it and speed-sensitive switch oil extraction/Fill valve spool end did not have the gap even can back down spool a bit slightly, enters the oil extraction district in case guarantee plunger, and this valve just can be backed down.Then reserve certain clearance with speed-sensitive switch high-pressure oil feed valve, gap length requires to reach the 20%-60% of the total aperture of spool, becomes moment of torsion control to make things convenient for realization machine liquid.
Machine liquid becomes torque driving mechanism and is made up of pull bar driving ring, bearing and inclination angle adjustor; The pull bar driving ring is installed in the pull bar side of oil distributing valve group, and the centre of pull bar driving ring also is provided with endoporus; The inclined shaft of oil hydraulic motor passes endoporus and is connected by key with the pull bar driving ring; Endoporus can follow inclined shaft, plunger case to rotate together.Uniform hole of counting equal number with plunger is corresponding one by one with the position of pull bar in the oil distributing valve group around the pull bar driving ring, is connected by dowel fixes between pull bar and each hole.
Bearing Installation is in the side of pull bar driving ring back to the oil distributing valve group, isolating rotate relative with the high speed between the inclination angle adjustor of pull bar driving ring, and supports plunger cavity and acts on strong load on the driving ring by pull bar.
Inclination angle adjustor is installed in the side of bearing back to the pull bar driving ring, and is fixed on the housing, and does not follow the inclined shaft of oil hydraulic motor to rotate together.Inclination angle adjustor comprises a radial regulation piece and a tilt adjustment piece, is slidingly connected with the cylndrical surface between two, and relies on the hydraulic coupling that comes from the bearing side to be fixed.The tilt adjustment piece is positioned at the bearing side, and the radial regulation piece then is pressed on the housing of oil hydraulic motor.The center line of cylndrical surface and the glide direction of radial regulation piece all are radially and vertical mutually.Radially sliding of radial regulation piece changes the inclination that the tilt adjustment piece is close to bearing surface into, makes pull bar driving ring, bearing to have a down dip in the strong loading from plunger cavity.The inclined shaft that the pull bar driving ring is followed oil hydraulic motor is high speed rotating together, and is being with the pull bar to-and-fro motion, and the motion amplitude is determined by the inclination angle.
The center line that should guarantee the cylndrical surface simultaneously follows the inclined shaft inclination direction of this oil hydraulic motor should be positioned on the same vertical section.Because the inclined shaft inclination direction of this constant displacement hydraulic motor is fixed, so the oil suction district of plunger, oil extraction district all fix with respect to the oil hydraulic motor housing, and the separatrix in oil suction district and oil extraction district is also fixed.Design by this direction, guarantee that each plunger of oil hydraulic motor can be discharged to return opening to hydraulic oil by speed-sensitive switch oil extraction/Fill valve in the backhaul process, in the process process, can pass through speed-sensitive switch high-pressure oil feed valve or speed-sensitive switch oil extraction/Fill valve from pressure hydraulic fluid port or return opening oil suction, as long as the motion amplitude of pull bar has surpassed the gap of it and speed-sensitive switch high-pressure oil feed valve core end face, just can open this speed-sensitive switch high-pressure oil feed valve by force.Like this, along with the rotation of plunger case, each high-speed switch valve can open and close with identical waveform and amplitude, and phase phase difference each other (360 °/plunger number), thereby has substituted the rotating function of the relative oil hydraulic motor plunger cylinder of oil distribution casing.
The center line of cylndrical surface is positioned on the same vertical section with the inclined shaft inclination direction of this constant displacement hydraulic motor, has at first guaranteed to fit like a glove for the phase angle of each valve control signal and the suction oil condition of each plunger of oil hydraulic motor.Meanwhile, according to requirement to the output loading size, distance to radial regulation piece Off center position in the inclination angle adjustor is regulated, just can change dutycycle switching time of each speed-sensitive switch high-pressure oil feed valve, even the feasible oil suction stage at corresponding plunger, also have only portion of time pressure oil can enter the plunger oil pocket of oil hydraulic motor by speed-sensitive switch high-pressure oil feed valve, the acting of promotion plunger, all the other time plunger oil pockets in oil suction stage are the speed-sensitive switch oil extraction/Fill valve by communicating with return opening all, directly from the return opening oil suction, replenish the cavity that plunger motion produces, but can not promote the plunger acting, thereby make oil hydraulic motor average output torque not only with the discharge capacity of this oil hydraulic motor, the inlet oil pressure is directly proportional, also be directly proportional with the dutycycle of displacement in whole plunger oil suction stroke of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger, thereby the average torque that output is directly proportional with dutycycle has realized that switch becomes moment of torsion control.Pass between dutycycle and the average torque is:
Dutycycle=X
Open* 2n=T/ (D * P * η
Machine* η
Valve),
Pass between pushrod movement amplitude x and the dutycycle is:
Dutycycle=X
Open* 2n=arccos (x0/x)/90 °,
The radial regulation piece leaves the side-play amount y of its middle position and the pass between the pushrod movement amplitude x is:
x＝y×tg(α/2)；
Wherein: X
OpenBe the plunger displacement in the speed-sensitive switch high-pressure oil feed valve opening time section, n is the rotating speed of hydraulic motor output shaft, the average torque of T for needing to obtain, and D is the discharge capacity of oil hydraulic motor, P is the pressure of pressure hydraulic fluid port, η
MachineBe the mechanical efficiency of oil hydraulic motor, η
ValveBe the efficient of oil distributing valve group control plunger cavity, x0 is the gap length that pull bar head and speed-sensitive switch high-pressure oil feed valve end face are reserved, and α is that the cylndrical surface of radial regulation piece extends to the radian that pull bar distribution circle diametrical position place produces.
Below in conjunction with accompanying drawing 3, when plunger was in state 1, speed-sensitive switch high-pressure oil feed valve cut out under spring force and action of hydraulic force, and speed-sensitive switch oil extraction/Fill valve is opened by force, and plunger is to the smooth oil extraction of return opening; When plunger was in state 2, speed-sensitive switch oil extraction/Fill valve was closed by force, and plunger cavity pressure rises; When plunger was in state 3, speed-sensitive switch high-pressure oil feed valve was opened by force, and speed-sensitive switch oil extraction/Fill valve still is in closed condition, the plunger cavity oil suction of boosting; When plunger was in state 4, speed-sensitive switch high-pressure oil feed valve cut out, and speed-sensitive switch oil extraction/Fill valve still is in closed condition, and pressure promotes plunger and continues motion; When plunger was in state 5, plunger cavity pressure reduced, and speed-sensitive switch oil extraction/Fill valve is opened under the effect of return opening pressure, and plunger is from the return opening oil suction; When plunger was in state 6, speed-sensitive switch oil extraction/Fill valve was opened by force, guaranteed that plunger is from the smooth oil suction of return opening.
Switch becomes the discharge capacity of moment of torsion control both change oil hydraulic motor, also do not change charge oil pressure, but it has finally directly changed the output torque of oil hydraulic motor.
Substituted oil distribution casing oil hydraulic motor afterwards by this oil distributing valve group, when load torque is less, though its part plunger is in the oil suction district, but still from the return opening oil suction, and do not need pressure oil is wasted on the extra throttling control valve mouth, thereby saved a large amount of energy consumptions.
Meanwhile, because the face leakage of slide relative face is the biggest obstacle that fluid motor-driven pressure further raises between oil distribution casing and the plunger cylinder always, oil distributing valve group of the present invention is directly installed on the oil hydraulic motor plunger cylinder end face, replace oil distribution casing, do not had slide relative between oil distributing valve group and the oil hydraulic motor plunger cylinder end face, cleared away the major technique obstacle yet for the plunger hydraulic motor driving pressure significantly improves.
At last, it should be noted that above what enumerate only is specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate all should be thought protection scope of the present invention.
Claims (5)
1, a kind of plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component comprises plunger, it is characterized in that, comprises that also oil distributing valve group and machine liquid become torque driving mechanism, and described oil distributing valve group is by forming with the one valve of number of plungers equal number; Each one valve is made of a speed-sensitive switch high-pressure oil feed valve and corresponding speed-sensitive switch oil extraction Fill valve, the valve port of speed-sensitive switch high-pressure oil feed valve in the one valve and speed-sensitive switch oil extraction Fill valve is provided with face-to-face, and the end face of two spools leaves and can supply the space of the pull bar head activity of pull bar; The spring chamber of each speed-sensitive switch oil extraction Fill valve all is communicated with corresponding plunger cavity, all get through in the middle of the spool of each speed-sensitive switch oil extraction Fill valve, plunger cavity is communicated with the spool end of speed-sensitive switch high-pressure oil feed valve by the spool of spring chamber and speed-sensitive switch oil extraction Fill valve; Described each speed-sensitive switch oil extraction Fill valve is provided with return opening, and described each speed-sensitive switch high-pressure oil feed valve is provided with the pressure hydraulic fluid port;
The afterbody of described pull bar passes from the spring chamber of speed-sensitive switch high-pressure oil feed valve, becomes torque driving mechanism with machine liquid and links to each other; The pull bar head is between the end face of two spools;
Described machine liquid becomes torque driving mechanism and is made up of pull bar driving ring, bearing and inclination angle adjustor; Described pull bar driving ring is installed in the pull bar side of oil distributing valve group, and the centre of pull bar driving ring also is provided with endoporus; The inclined shaft of oil hydraulic motor passes endoporus and is connected by key with the pull bar driving ring; Described endoporus can follow inclined shaft, plunger case to rotate together; Described Bearing Installation with rotate relative with the high speed between the inclination angle adjustor of isolation pull bar driving ring, and supports plunger cavity acts on the pull bar driving ring by pull bar strong load in the side of pull bar driving ring back to the oil distributing valve group; Described inclination angle adjustor is installed in the side of bearing back to the pull bar driving ring, and is fixed on the housing, and does not follow the inclined shaft of oil hydraulic motor to rotate together.
2, plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component according to claim 1 is characterized in that, the contact position place in pull bar and speed-sensitive switch high-pressure oil feed valve spring chamber also is provided with seal ring.
3, plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component according to claim 1, it is characterized in that, uniform hole of counting equal number around the described pull bar driving ring with plunger, corresponding one by one with the position of pull bar in the oil distributing valve group, be connected by dowel fixes between pull bar and each hole.
4, plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component according to claim 1, it is characterized in that, described inclination angle adjustor comprises a radial regulation piece and a tilt adjustment piece, the tilt adjustment piece is positioned at the bearing side, the radial regulation piece is pressed on the housing of oil hydraulic motor, be slidingly connected with the cylndrical surface between two regulating blocks, and rely on the hydraulic coupling come from the bearing side to be fixed, the center line of cylndrical surface and the glide direction of radial regulation piece all are radially and mutual vertical.
5, a kind of change torque control method that is applicable to plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil-distribution component as claimed in claim 1 is characterized in that, may further comprise the steps:
(1), regulates the distance of radial regulation piece Off center position in the inclination angle adjustor, in order to change dutycycle switching time of each speed-sensitive switch high-pressure oil feed valve according to requirement to the output loading size;
(2) opening time of control speed-sensitive switch high-pressure oil feed valve, make corresponding plunger, have only part-time pressure oil can enter the plunger cavity of oil hydraulic motor, promote the plunger acting by speed-sensitive switch high-pressure oil feed valve in the oil suction stage;
All the other time plunger cavities in oil suction stage are the speed-sensitive switch oil extraction Fill valve by communicating with return opening all, directly from the return opening oil suction, replenish the cavity that plunger motion produces, but can not promote the plunger acting, guarantee that average output torque is directly proportional with the dutycycle of displacement in whole plunger oil suction stroke of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger;
(3) by the real-time regulated to displacement dutycycle in whole plunger oil suction stroke of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger, the average torque that output is directly proportional with dutycycle is realized becoming moment of torsion and is controlled; Pass between dutycycle and the average torque is:
Dutycycle=X
Open* 2n=T/ (D * P * η
Machine* η
Valve),
Pass between pushrod movement amplitude x and the dutycycle is:
Dutycycle=X
Open* 2n=arccos (x0/x)/90 °,
The radial regulation piece leaves the side-play amount y of its middle position and the pass between the pushrod movement amplitude x is:
x＝y×tg(α/2)；
Wherein: X
OpenBe the plunger displacement in the speed-sensitive switch high-pressure oil feed valve opening time section, n is the rotating speed of oil hydraulic motor, the average torque of T for needing to obtain, and D is the discharge capacity of oil hydraulic motor, P is the pressure of pressure hydraulic fluid port, η
MachineBe the mechanical efficiency of oil hydraulic motor, η
ValveBe the efficient of oil distributing valve group control plunger cavity, x0 is the gap length that pull bar head and speed-sensitive switch high-pressure oil feed valve end face are reserved, and α is that the cylndrical surface of radial regulation piece extends to the radian that pull bar distribution circle diametrical position place produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710069710A CN100588837C (en) | 2007-06-25 | 2007-06-25 | Plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil dispensing subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710069710A CN100588837C (en) | 2007-06-25 | 2007-06-25 | Plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil dispensing subassembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101334014A CN101334014A (en) | 2008-12-31 |
| CN100588837C true CN100588837C (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710069710A Expired - Fee Related CN100588837C (en) | 2007-06-25 | 2007-06-25 | Plunger type quantitative hydraulic motor electro-hydraulic switch torque-changing oil dispensing subassembly |
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| CN (1) | CN100588837C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892943A (en) * | 2010-06-04 | 2010-11-24 | 杭州慧翔机电控制工程有限公司 | Switch motor variable-torque oil distribution mechanism capable of independently adjusting oil absorption and extraction and variable torque method |
| CN102042161A (en) * | 2010-10-19 | 2011-05-04 | 杭州宇控机电工程有限公司 | Rotary cylinder plunger hydraulic motor for independently adjusting oil absorption and discharge and variable torque method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991055B (en) * | 2014-05-16 | 2015-10-28 | 安徽江淮汽车股份有限公司 | A kind of cylinder holes inner seal ring erecting device |
-
2007
- 2007-06-25 CN CN200710069710A patent/CN100588837C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892943A (en) * | 2010-06-04 | 2010-11-24 | 杭州慧翔机电控制工程有限公司 | Switch motor variable-torque oil distribution mechanism capable of independently adjusting oil absorption and extraction and variable torque method |
| CN101892943B (en) * | 2010-06-04 | 2013-04-24 | 杭州慧翔机电控制工程有限公司 | Switch motor variable-torque oil distribution mechanism capable of independently adjusting oil absorption and extraction and torque shift method |
| CN102042161A (en) * | 2010-10-19 | 2011-05-04 | 杭州宇控机电工程有限公司 | Rotary cylinder plunger hydraulic motor for independently adjusting oil absorption and discharge and variable torque method |
| CN102042161B (en) * | 2010-10-19 | 2013-04-24 | 杭州宇控机电工程有限公司 | Rotary cylinder plunger hydraulic motor for independently adjusting oil absorption and discharge and torque shift method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101334014A (en) | 2008-12-31 |
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