CN201747515U - Motor-switching variable-torque oil distribution mechanism with independent adjustment of oil suction and discharge - Google Patents

Motor-switching variable-torque oil distribution mechanism with independent adjustment of oil suction and discharge Download PDF

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Publication number
CN201747515U
CN201747515U CN2010202178542U CN201020217854U CN201747515U CN 201747515 U CN201747515 U CN 201747515U CN 2010202178542 U CN2010202178542 U CN 2010202178542U CN 201020217854 U CN201020217854 U CN 201020217854U CN 201747515 U CN201747515 U CN 201747515U
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China
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speed
sensitive switch
oil
pilot valve
repairing
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Chinese (zh)
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李林
顾临怡
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HANGZHOU HUIXIANG ELECTROMECHANICAL CONTROL ENGINEERING Co Ltd
Zhejiang University ZJU
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HANGZHOU HUIXIANG ELECTROMECHANICAL CONTROL ENGINEERING Co Ltd
Zhejiang University ZJU
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Abstract

The utility model relates to an oil distribution mechanism, aiming at providing a motor-switching variable-torque oil distribution mechanism with independent adjustment of oil suction and discharge. The oil distribution mechanism comprise a torque output mechanism, a quantified tilting tray, a plunger type cylinder, a plunger, a plunger cavity, an oil distribution valve bank, an oil distribution casing group and a switch torque-variable drive mechanism. The utility model has the beneficial effect that through carrying out real-time adjustment on the duty cycle of plunger displacement in a whole plunger oil absorption stroke in a starting time period of a high-speed switch high-pressure oil supply valve as well as outputting average torque in direct ratio to the duty cycle, switching torque variation control is realized, and the output torque of a hydraulic motor is directly changed finally; and meanwhile, the utility model has the advantages of energy saving, improved response speed by one magnitude order, prevention of a zero passage problem, realization of positive and negative switching by only changing driving direction of a pilot valve, and the like.

Description

The switch motor variable-torque oil distribution mechanism of suction oil independent regulation
Technical field
The utility model relates to a kind of oil distribution mechanism, in particular, relates to a kind of switch motor variable-torque oil distribution mechanism of suction oil independent regulation.
Background technique
Thereby plunger piston hydraulic motor is to rely on pressure oil to act on to make motor output shaft certain torque alive 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, can replace with confession, oil drain out on the motor body and communicate so that be in plunger in fuel feeding or the oil extraction stroke, and guarantee isolation and sealing between each oil pocket.Because the angle of release of two arc-shaped windows, position all can not real time alterings on the oil distribution casing, thereby oil hydraulic motor can't be realized variable (to the continuous adjusting of output torque and discharge capacity) by oil distribution mechanism.Up to the present, existing variable hydraulic motor on the market all can only be realized variable by the swash plate angle of inclination of real-time regulated oil hydraulic motor opposite side.And there are two weakness in the variable mode that the swash plate angle of inclination is regulated in this traditional passing through:
1. the hydraulic coupling that each plunger produces in the oil hydraulic motor, when driving the oil hydraulic motor rotation, its power on the swash plate of acting on also can produce one with swash plate angle of inclination controlling party to consistent moment of torsion, and this moment of torsion changes along with the change of oil hydraulic motor corner, although a plurality of plungers are arranged, but still can't cancel each other in inside fully, the moment of torsion of this part fluctuation finally all has been added on the stroking mechanism at control swash plate angle of inclination.Stroking mechanism needs sizable area and drives in order to overcome the moment of torsion of this fluctuation, has seriously limited the speed of response of oil hydraulic motor.
2. to switch to the transition point of pump operating mode be that discharge capacity is zero point to oil hydraulic motor.Therefore, for switch to the pump operating mode with reclaim to slow down, the energy of braking process, the discharge capacity controlling mechanism of oil hydraulic motor must Zero Crossing Point, not only the stroke of stroking mechanism is big, speed of response is slow, but also is easy to cause near the instability zero point.
The model utility content
The technical problems to be solved in the utility model is, overcomes deficiency of the prior art, and a kind of switch motor variable-torque oil distribution mechanism of suction oil independent regulation is provided.
For overcoming the above problems, the utility model is to be achieved through the following technical solutions:
The utility model provides a kind of switch motor variable-torque oil distribution mechanism of suction oil independent regulation, comprises moment of torsion output mechanism, quantitative swash plate, plunger case, plunger and plunger cavity, comprises that also oil distributing valve group, oil distribution casing group and switch become torque driving mechanism;
Described oil distributing valve group is by speed-sensitive switch high-pressure oil feed valve, the speed-sensitive switch oil extraction-Fill valve identical with number of plungers, the high-pressure oil feed pilot valve, oil extraction-repairing pilot valve and public oil distributing valve body constitute, each plunger and the corresponding speed-sensitive switch high-pressure oil feed valve of corresponding plunger cavity thereof and corresponding with it speed-sensitive switch high-pressure oil feed pilot valve, a speed-sensitive switch oil extraction-Fill valve and corresponding with it speed-sensitive switch oil extraction-repairing pilot valve; Each speed-sensitive switch high-pressure oil feed valve comprises a speed-sensitive switch high-pressure oil feed spool, a speed-sensitive switch high-pressure oil feed valve spring, a speed-sensitive switch high-pressure oil feed valve spring chamber, a speed-sensitive switch high-pressure oil feed valve shaft is to hydraulic fluid port, a circumferential hydraulic fluid port of speed-sensitive switch high-pressure oil feed valve and a speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, each speed-sensitive switch oil extraction-Fill valve comprises a speed-sensitive switch oil extraction-repairing spool, a speed-sensitive switch oil extraction-Fill valve spring, a speed-sensitive switch oil extraction-Fill valve spring chamber, the axial hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve, a circumferential hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve and a speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step; Between each speed-sensitive switch high-pressure oil feed pilot valve is near case side end face and speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, between speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and the close central side end face cavity volume is arranged respectively, between each speed-sensitive switch oil extraction-repairing pilot valve was near case side end face and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step, speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step and speed-sensitive switch oil extraction-repairing pilot valve respectively had a cavity volume near between the central side end face; The speed-sensitive switch high-pressure oil feed valve and the speed-sensitive switch oil extraction-Fill valve of each plunger correspondence all are arranged side by side, and speed-sensitive switch high-pressure oil feed valve shaft is communicated with to hydraulic fluid port and all corresponding with it plunger cavity of the axial hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve; The circumferential hydraulic fluid port of each speed-sensitive switch high-pressure oil feed valve all passes speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and speed-sensitive switch high-pressure oil feed pilot valve near the cavity volume between the central side end face, is communicated with oil distribution casing high pressure oil runner; The circumferential hydraulic fluid port of each speed-sensitive switch oil extraction-Fill valve all passes speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step and speed-sensitive switch oil extraction-repairing pilot valve near the cavity volume between the central side end face, is communicated with oil distribution casing oil return runner; Each speed-sensitive switch high-pressure oil feed valve spring chamber all is communicated with corresponding speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, and each speed-sensitive switch oil extraction-Fill valve spring chamber all is communicated with corresponding speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step; Two end faces of each speed-sensitive switch high-pressure oil feed pilot valve and speed-sensitive switch oil extraction-repairing pilot valve (near case side end face and close central side end face) all are communicated with the leakage hydraulic fluid port, and each speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step is communicated with oil distribution casing high pressure oil runner near the cavity volume between the end face of central side with speed-sensitive switch high-pressure oil feed pilot valve; Each speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step is communicated with oil distribution casing oil return runner near the cavity volume between the central side end face with speed-sensitive switch oil extraction-repairing pilot valve; Each speed-sensitive switch high-pressure oil feed pilot valve links to each other with the speed-sensitive switch high-pressure oil feed pilot valve high pressure plunger cavity that the cavity volume between the fuel feeding control step is all corresponding with corresponding speed-sensitive switch high-pressure oil feed pilot valve altogether near the case side end face, and the cavity volume that each speed-sensitive switch oil extraction-repairing pilot valve is controlled between the step near case side end face and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing all links to each other with the corresponding plunger cavity that the speed-sensitive switch oil extraction-the repairing pilot valve is corresponding; All speed-sensitive switch high-pressure oil feed pilot valves are positioned on the same cross section, and all speed-sensitive switch oil extraction-repairing pilot valves are positioned on same-cross section.
Described oil distribution casing group is screwed the end face that is positioned at the plunger opposite side in described oil distributing valve body, and there are high pressure oil runner and oil return runner in oil distribution casing group inside; Speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step on the oil distribution casing high pressure oil runner of oil distribution casing group switching centre and described all speed-sensitive switch high-pressure oil feed pilot valves is communicated with cavity volume between the close central side end face of speed-sensitive switch high-pressure oil feed pilot valve, and oil distribution casing high pressure oil runner is communicated with high pressure hydraulic fluid port on the housing; The annular oil distribution casing oil return runner in the oil distribution casing high pressure oil runner outside of oil distribution casing group switching centre is controlled step with the speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing on described all speed-sensitive switch oil extraction-repairing pilot valves and is communicated with near the cavity volume between the central side end face with speed-sensitive switch oil extraction-repairing pilot valve, and the annular oil distribution casing oil return runner on the oil distribution casing group is communicated with the return opening on the housing; The leakage oil runner that leaks on oily runner and the pump body is shared, is communicated with leakage hydraulic fluid port on the housing; Between the annular oil distribution casing oil return runner in described oil distribution casing group switching centre oil distribution casing high pressure oil runner and its outside, adopt high-pressure rotary supporting component and low pressure rotation supporting component to provide rotation to support respectively between annular oil distribution casing oil return runner and the leakage oil runner, relatively rotate between oil distribution casing group and the rear end cover near case side.
As a kind of improvement, the switch motor variable-torque oil distribution mechanism of described suction oil independent regulation, its switch becomes torque driving mechanism and is divided into high-pressure oil feed driving mechanism and oil extraction-repairing driving mechanism, wherein the high-pressure oil feed driving mechanism is by a speed-sensitive switch high-pressure oil feed pilot valve driving bearing and two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control valve bodies, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plungers, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control springs, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablets and two the speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring chambeies corresponding with spring are formed, and oil extraction-repairing driving mechanism is by a speed-sensitive switch oil extraction-repairing pilot valve driving bearing and two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control valve bodies, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plungers, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control springs, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablets and two the speed-sensitive switch oil extractions-repairing pilot valve driving bearing control spring chamber corresponding with spring are formed; Control plunger and speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis normal for two of the high-pressure oil feed driving mechanism, with this bearing movable direction place straight line conllinear, tangent with this bearing outer ring, circumferencial direction is uniform, the discontiguous end face of each speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger and speed-sensitive switch high-pressure oil feed pilot valve driving bearing outer ring is installed speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring, the other end of speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring is provided with speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablet, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablet all is positioned at speed-sensitive switch high-pressure oil feed pilot valve driving bearing control control valve body, its inner speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring chamber is communicated with the control oil channel of outside, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control control valve body is coaxial with speed-sensitive switch high-pressure oil feed pilot valve driving bearing control control plunger, be installed on the controlling and driving shell, speed-sensitive switch high-pressure oil feed pilot valve driving bearing inner ring contacts near the case side end face with the speed-sensitive switch high-pressure oil feed pilot valve of its driving and provides rotation to support; Two speed-sensitive switch oil extractions of speed-sensitive switch oil extraction-repairing driving mechanism-repairing pilot valve driving bearing control plunger and speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis normal, with this bearing movable direction place straight line conllinear, tangent with this bearing outer ring, circumferencial direction is uniform, each speed-sensitive switch oil extraction-discontiguous end face of repairing pilot valve driving bearing control plunger and speed-sensitive switch oil extraction-repairing pilot valve driving bearing outer ring is installed speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring, the other end of speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring is provided with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablet, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablet all is positioned at speed-sensitive switch oil extraction-repairing pilot valve driving bearing control control valve body, its inner spring chamber is communicated with the control oil channel of outside, control valve body is coaxial with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger, be installed on the controlling and driving shell, speed-sensitive switch oil extraction-repairing pilot valve driving bearing inner ring contacts near the case side end face with the speed-sensitive switch oil extraction-repairing pilot valve of its driving and provides rotation to support; Speed-sensitive switch high-pressure oil feed pilot valve driving bearing is only controlled speed-sensitive switch high-pressure oil feed pilot valve, speed-sensitive switch high-pressure oil feed pilot valve is only controlled speed-sensitive switch high-pressure oil feed valve, speed-sensitive switch oil extraction-repairing pilot valve driving bearing is only controlled speed-sensitive switch oil extraction-repairing pilot valve, speed-sensitive switch oil extraction-repairing pilot valve is only controlled speed-sensitive switch oil extraction-Fill valve, has so realized suction, the oil extraction independent regulation of oil distribution mechanism.
As a kind of improvement, described oil distribution casing group is made up of oil distribution casing, high-pressure rotary supporting component, low pressure rotation supporting component and rear end cover, is that traditional oil distribution casing of being symmetrically distributed of center is different with suction, oil extraction waist shaped hole with suction oil content interface, there are oil distribution casing high pressure oil runner and oil distribution casing oil return runner in oil distribution casing inside, the central cylindrical runner is as oil distribution casing high pressure oil runner, the ring runner in the oil distribution casing high pressure oil runner outside is as oil distribution casing oil return runner, and oil distribution casing oil return runner outer exterior wall is for revealing oil pocket; The round regional side in center is communicated with pilot valve body high pressure oil runner on oil distribution casing and the guide's valve body counterface, the other end directly is communicated with oil distribution casing high pressure oil runner, annular region one side in the border circular areas outside is communicated with guide's valve body oil return runner, and the other end is communicated with oil distribution casing oil return runner by 4 identical uniform waist shaped holes; The high-pressure rotary supporting component provides the sealing between oil distribution casing high pressure runner and the oil distribution casing oil return runner, low pressure rotation supporting component provides the sealing between oil distribution casing oil return runner and the oily runner of leakage, and high-pressure rotary supporting component and low pressure rotation supporting component provide the rotation between oil distribution casing and the rear end cover to support jointly.
As a kind of improvement, described speed-sensitive switch high-pressure oil feed pilot valve axis is the axis symmetry in the projection on the plane, high-speed switch valve place and the speed-sensitive switch oil extraction-projection of repairing pilot valve axis on plane, high-speed switch valve place with suction oil content boundary line.
As a kind of improvement, the inwall central axis of described speed-sensitive switch high-pressure oil feed pilot valve driving bearing is parallel with the central axis of described plunger case, and along having a direction less than 10 ° of angles that a fixed bias is arranged with suction oil content boundary line, speed-sensitive switch high-pressure oil feed pilot valve driving bearing energy and can only be in the Vertical direction move left and right of this direction; The inwall central axis of speed-sensitive switch oil extraction-repairing pilot valve driving bearing is parallel with the central axis of described plunger case, and along having a direction less than 10 ° of angles that a fixed bias is arranged with suction oil content boundary line, this direction and speed-sensitive switch high-pressure oil feed pilot valve driving bearing fixed bias direction in the projection on plane, high-speed switch valve place about suction oil content interface symmetry, speed-sensitive switch oil extraction-repairing pilot valve driving bearing energy and can only be in the Vertical direction move left and right of this direction.
As a kind of improvement, described speed-sensitive switch high-pressure oil feed pilot valve is near the central side end face, its diameter is more smaller than the diameter of speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, this area difference provides a pressure radially for speed-sensitive switch high-pressure oil feed pilot valve, makes all speed-sensitive switch high-pressure oil feed pilot valves can both be pressed on the described speed-sensitive switch high-pressure oil feed pilot valve driving bearing.Described speed-sensitive switch oil extraction-repairing pilot valve is near the central side end face, its diameter is littler than the diameter of speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step, this area difference provides a pressure radially for speed-sensitive switch oil extraction-repairing pilot valve, makes all speed-sensitive switch oil extraction-repairing pilot valves can both be pressed on described speed-sensitive switch oil extraction-repairing pilot valve driving bearing.
As a kind of improvement, described oil distributing valve body axially is being divided into three: plunger cavity separating valve body, main valve body, guide's valve body; Plunger cavity separating valve body, main valve body, guide's valve body are rigidly connected on the plunger case by pin, and oil distributing valve body and oil distribution casing group link together by screw; The outer rim of all hydraulic fluid ports all is provided with seal ring between plunger cavity separating valve body and main valve body, main valve body and guide's valve body, guide's valve body and oil distribution casing group, plunger cavity separating valve body and the plunger case.
As a kind of improvement, the width of described speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step makes pilot valve can respond the variation of plunger position fast all with the undercut groove width is consistent accordingly on guide's valve body.
As a kind of improvement, when the displacement of described speed-sensitive switch high-pressure oil feed pilot valve driving bearing and speed-sensitive switch oil extraction-repairing pilot valve driving bearing is zero, speed-sensitive switch high-pressure oil feed valve spring chamber is except oil extraction-oil suction transition point is isolated, other positions all are communicated with oil distribution casing group switching centre high pressure oil runner, make speed-sensitive switch high-pressure oil feed valve keep closing, speed-sensitive switch oil extraction-Fill valve spring chamber is except oil suction-oil extraction transition point is isolated, other positions all are communicated with plunger cavity, speed-sensitive switch oil extraction-Fill valve is stayed open, make the motor can be from the oil distribution casing oil return runner repairing of oil distribution casing group.
As a kind of improvement, when the displacement of described speed-sensitive switch high-pressure oil feed pilot valve driving bearing was zero, the initial displacement of speed-sensitive switch high-pressure oil feed pilot valve was negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias between the plunger case central axis; Speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step cuts off speed-sensitive switch high-pressure oil feed valve spring chamber, speed-sensitive switch high-pressure oil feed pilot valve mutually near the cavity volume between the central side end face near cavity volume, speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and the speed-sensitive switch high-pressure oil feed pilot valve between case side end face and the speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step; Described speed-sensitive switch oil extraction-when the displacement of repairing pilot valve control bearing was zero, the initial displacement of speed-sensitive switch oil extraction-repairing pilot valve was the speed-sensitive switch oil extraction-repairing pilot valve driving bearing of twice and the fixed bias between the plunger case central axis; Speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step is communicated with speed-sensitive switch oil extraction-Fill valve spring chamber with plunger cavity, and speed-sensitive switch oil extraction-repairing pilot valve valve port opening is the speed-sensitive switch oil extraction-repairing pilot valve driving bearing of twice and the fixed bias between the plunger case central axis.
In the utility model, be used for the switch method for changing torque of the machine solution guide switch changing torque oil-distribution component of plunger piston hydraulic motor suction, oil extraction independent regulation:
At first, initial position and postive direction are defined as follows:
1. get on the suction oil content boundary line, plunger is a starting point when being in plunger thick stick tube bosom, and start angle is 0 °;
2. over against output shaft, to get left-handedly for just, dextrorotation is for negative;
3. all pilot valve driving bearings are to the right for just, left for negative;
4. all guide's spools move upward into just, downwards for negative;
5. all pilot valve displacement intermediate values are defined as 0 of spool;
6. coordinate axes is got and is faced output shaft, and level is to the right the X-axis postive direction, is the Y-axis postive direction straight up;
7. be initial point with the plunger case center, driving bearing to the right, upwards for just, left, downwards for bearing;
This switch method for changing torque may further comprise the steps:
(1), regulates speed-sensitive switch high-pressure oil feed pilot valve driving bearing and speed-sensitive switch oil extraction-repairing pilot valve driving bearing, in order to change dutycycle switching time of each speed-sensitive switch high-pressure oil feed valve according to requirement to the output torque size;
(2) opening time of control speed-sensitive switch high-pressure oil feed valve, make only when speed-sensitive switch high-pressure oil feed opening of valves, can promote corresponding plunger acting by the plunger cavity that is positioned at the oil suction district from the oil suction of high pressure hydraulic fluid port; The plunger cavity that is positioned at the oil suction district is when the speed-sensitive switch delivery valve is closed, and all the speed-sensitive switch oil extraction-Fill valve by communicating with return opening directly from the return opening oil suction, replenishes the cavity that plunger motion produces, but can not promote the plunger acting; Meanwhile, be positioned at the plunger cavity in oil extraction district, only when speed-sensitive switch high-pressure oil feed valve cuts out, can directly be discharged to return opening, do not hinder plunger motion by the speed-sensitive switch oil extraction-Fill valve that communicates with return opening; The plunger cavity that is positioned at the oil extraction district when speed-sensitive switch oil extraction-Fill valve is closed, all by the high-pressure oil feed valve to the oil extraction of high pressure hydraulic fluid port, be operated in the pump operating mode, realize to slow down and braking, and Brake Energy be converted back into the pressure energy; 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 displacement of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger is inhaled at whole plunger, the real-time regulated of dutycycle in the oil extraction stroke, the average torque that output is directly proportional with dutycycle realizes that the change moment of torsion controls; Pass between dutycycle and the average torque is:
T=[D 1-(1-D 2)] * (D m* P * η Machine* η Valve)
The displacement y of driving bearing and the pass between the plunger displacement dutycycle are:
D 1=d Open 1/ 2d Max=1-sin[2atan (| X P/ Y P|)]/4
D 2=d Open 2/ 2d Max=1-sin[2atan (| X T/ Y T|)]/4
Wherein: D 1For the displacement of plunger when speed-sensitive switch high-pressure oil feed valve is opened oil suction when the oil suction stroke inhaled at whole plunger, dutycycle in the oil extraction stroke, D 2For the displacement of plunger when speed-sensitive switch oil extraction-Fill valve is opened oil extraction when the oil extraction stroke inhaled at whole plunger, sky ratio in the oil extraction stroke, d Open 1Plunger displacement during for plunger oil suction stroke in the speed-sensitive switch high-pressure oil feed valve opening time section, d Open 2The plunger displacement of speed-sensitive switch oil extraction-Fill valve opening time section during for plunger oil extraction stroke, d MaxBe plunger suction oil one way stroke, T is for needing the average torque of output, D mBe the discharge capacity of oil hydraulic motor, P is the pressure of high pressure hydraulic fluid port, η MachineBe the mechanical efficiency of oil hydraulic motor, η ValveBe the efficient of oil distributing valve group, Y PBe the inwall center of speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias displacement between the plunger case central axis, X PFor the displacement amplitude of speed-sensitive switch high-pressure oil feed pilot valve is the displacement of speed-sensitive switch high-pressure oil feed pilot valve driving bearing, Y TBe the inwall center of speed-sensitive switch oil extraction-repairing pilot valve driving bearing and the fixed bias displacement between the plunger case central axis, X TFor the displacement amplitude of speed-sensitive switch oil extraction-repairing pilot valve is the displacement of speed-sensitive switch oil extraction-repairing pilot valve driving bearing;
When (4) being in the motor operating mode, for speed-sensitive switch high-pressure oil feed pilot valve driving bearing, when oil hydraulic motor is just changeing, X P＜0, oil hydraulic motor when counter-rotating, then X P＞0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing, when oil hydraulic motor is just changeing, X T=+Max, oil hydraulic motor when counter-rotating, then X T=-Max; When being in the pump operating mode, for speed-sensitive switch high-pressure oil feed pilot valve driving bearing, during the oil hydraulic pump clockwise and anticlockwise, X P=0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing, when oil hydraulic pump is just changeing, X T＞0, oil hydraulic pump when counter-rotating, then X T＜0; Y P＞0, Y T＜0 is fixed bias.
By said structure and controlling method, when the motor operating mode is just being changeed, X P＜0, X T=+Max, each plunger whenever turns around, and has all experienced 6 states (4 major states and 2 transition states):
(1) state A: high drive state: the displacement of speed-sensitive switch high-pressure oil feed pilot valve is less than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias (Y between the plunger case central axis P), speed-sensitive switch oil extraction-repairing pilot valve displacement is greater than the fixed bias (Y between speed-sensitive switch oil extraction-repairing pilot valve driving bearing and the plunger case central axis T), and plunger advancement; Under the effect of speed-sensitive switch high-pressure oil feed pilot valve, when plunger cavity and speed-sensitive switch high-pressure oil feed valve spring chamber are linked up, speed-sensitive switch high-pressure oil feed valve is opened under the pressure effect of high pressure hydraulic fluid port, thereby the pressure of plunger cavity near but a little less than the pressure of high pressure hydraulic fluid port, plunger cavity is linked up with speed-sensitive switch oil extraction-Fill valve spring chamber simultaneously, and speed-sensitive switch oil extraction-Fill valve keeps closing under the pressure effect of plunger cavity;
(2) state B, C: idle stroke state: wherein B is a transition state, C is the repairing state; The displacement of speed-sensitive switch high-pressure oil feed pilot valve is greater than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias between the plunger case central axis, the speed-sensitive switch oil extraction-displacement of repairing pilot valve is greater than the fixed bias between speed-sensitive switch oil extraction-repairing pilot valve driving bearing and the plunger case central axis, and plunger advancement; Under the effect of speed-sensitive switch high-pressure oil feed pilot valve, high pressure hydraulic fluid port and speed-sensitive switch high-pressure oil feed valve spring chamber are linked up, the quick closedown under the pressure effect of high pressure hydraulic fluid port of speed-sensitive switch high-pressure oil feed valve, plunger moves on and causes the plunger cavity volume to increase, pressure drops to the back pressure that is lower than return opening fast, plunger cavity is linked up with speed-sensitive switch oil extraction-Fill valve spring chamber simultaneously, oil extraction-Fill valve is opened after the pressure of plunger cavity is reduced to below the return opening back pressure, and wherein the process opened of speed-sensitive switch oil extraction-Fill valve is transition state B; It is repairing state C from the return opening repairing up to the process that arrives suction oil content interface that speed-sensitive switch oil extraction-Fill valve is opened back-plunger;
(3) state D: normal oil return state: the displacement of speed-sensitive switch high-pressure oil feed pilot valve is greater than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias between the plunger case central axis, the speed-sensitive switch oil extraction-displacement of repairing pilot valve is greater than the fixed bias between speed-sensitive switch oil extraction-repairing pilot valve driving bearing and the plunger case central axis, and plunger retreats; Under the effect of speed-sensitive switch high-pressure oil feed pilot valve, speed-sensitive switch high-pressure oil feed valve spring chamber is communicated with the high pressure hydraulic fluid port, and the high-pressure oil feed valve keeps cutting out; The return opening and the speed-sensitive switch oil extraction-Fill valve spring chamber of band back pressure are linked up, because during the plunger oil extraction, plunger cavity pressure near and a little more than the band back pressure return opening pressure, carry out normal oil return so speed-sensitive switch oil extraction-Fill valve stays open state under the pressure effect of plunger cavity;
(4) state E, F: pump output state: wherein E is a transition state, F is the pump output state; The displacement of speed-sensitive switch high-pressure oil feed pilot valve is greater than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias between the plunger case central axis, the speed-sensitive switch oil extraction-displacement of repairing pilot valve is less than the fixed bias between speed-sensitive switch oil extraction-repairing pilot valve driving bearing and the plunger case central axis, and plunger retreats; Under the effect of speed-sensitive switch oil extraction-repairing pilot valve, plunger cavity and speed-sensitive switch oil extraction-Fill valve spring chamber is linked up, speed-sensitive switch oil extraction-Fill valve is closed under the pressure effect of plunger cavity, plunger continues to retreat and causes the plunger cavity volume to reduce, pressure is climbed to the pressure above the high pressure hydraulic fluid port, the high pressure hydraulic fluid port is linked up with high-pressure oil feed valve spring chamber simultaneously, and speed-sensitive switch high-pressure oil feed valve is opened after the pressure of plunger cavity rises to more than the high pressure oil mouth pressure; Wherein state E is this transition state of speed-sensitive switch high-pressure oil feed opening of valves process, and state F is that plunger is by forwarding row's oil suction separating surface to the oil extraction of high pressure hydraulic fluid port to up to plunger.
Counter-rotating of motor operating mode and pump operating mode forward and backward also will experience six same states.
Compared with prior art, the beneficial effects of the utility model are:
(1) become moment of torsion control: the utility model is by the real-time regulated to the dutycycle in whole plunger oil suction stroke of the plunger displacement in the speed-sensitive switch high-pressure oil feed valve opening time section, the average torque that output is directly proportional with dutycycle, realized that switch becomes moment of torsion control, 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;
(2) it is energy-conservation: when load torque is less, part is positioned at the plunger cavity in oil suction district no longer from the oil suction of high pressure hydraulic fluid port, but pass through speed-sensitive switch oil extraction-Fill valve from the return opening oil suction, do not need pressure oil is wasted on the extra throttling control valve mouth, thereby saved a large amount of energy consumptions;
(3) pump operating mode: the displacement when speed-sensitive switch high-pressure oil feed valve is opened oil suction when reducing plunger at the oil suction stroke is simultaneously inhaled at whole plunger, the dutycycle D in the oil extraction stroke 1Displacement when speed-sensitive switch oil extraction-Fill valve is opened oil extraction when the oil extraction stroke with plunger is inhaled at whole plunger, dutycycle and D in the oil extraction stroke 2The time, oil hydraulic motor has just entered the operating mode of pump reposefully, i.e. and the output torque opposite with sense of rotation discharged high pressure oil to the high pressure hydraulic fluid port simultaneously;
(4) speed of response improves an order of magnitude: the hydraulic coupling that each plunger produces in the conventional hydraulic motors, when driving the oil hydraulic motor rotation, its power on the swash plate of acting on also can produce one with swash plate angle of inclination controlling party to consistent moment of torsion, and this moment of torsion changes along with the change of oil hydraulic motor corner, a plurality of plungers are arranged as far as possible but still can't cancel out each other in inside fully, the moment of torsion of this part fluctuation finally all has been added on the stroking mechanism at control swash plate angle of inclination, stroking mechanism is in order to overcome the moment of torsion of this fluctuation, need sizable area and drive, seriously limited the speed of response of oil hydraulic motor; And the utility model frees the variable driving mechanism from the huge unbalanced moment of swash plate, only need overcome each pilot valve and act on the unbalanced force that becomes on the torque drive bearing, unbalanced force has dwindled an order of magnitude, thereby the variable speed of response of oil hydraulic motor has been improved an order of magnitude;
(5) avoided the zero passage problem: the transition point that conventional hydraulic motors switches to the pump operating mode is that discharge capacity is zero point, therefore the pump operating mode is slowed down to reclaim, the energy of braking process in order to switch to, the necessary Zero Crossing Point of the discharge capacity controlling mechanism of oil hydraulic motor, not only the stroke of stroking mechanism is big, speed of response is slow, but also is easy to cause near the instability zero point; And the utility model only need reduce dutycycle D simultaneously 1And D 2, oil hydraulic motor has just entered the operating mode of pump reposefully, does not need through discharge capacity zero point, thereby does not also have near zero point unstable problem.
(6) the clockwise and anticlockwise switching only needs to change the pilot valve driving direction: when pump/motor need switch sense of rotation, only need can realize clockwise and anticlockwise according to description control pilot valve in the change torque operating procedure (4).
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model high speed switch high-pressure delivery valve and pilot valve schematic representation thereof.
Fig. 3 is the utility model high speed switch oil extraction-Fill valve and pilot valve schematic representation thereof.
Fig. 4 is oil distributing valve group and high and low pressure rotation supporting component and a bonnet schematic representation in the utility model.
Fig. 5 is the utility model high speed switch high-pressure fuel feeding pilot valve and its driving bearing place section.
Fig. 6 is the utility model high speed switch oil extraction-repairing pilot valve and its driving bearing place section.
Fig. 7 is each main valve of oil-distribution component and its change torque driving bearing scheme of installation in the utility model.
Fig. 8 is the schematic representation that the utility model high speed switch high-pressure fuel feeding guide spool is installed in guide's valve body.
Fig. 9 is the schematic representation that the oil extraction of the utility model high speed switch-repairing guide spool is installed in guide's valve body.
Figure 10 is the corresponding relation figure of each each valve port step and hydraulic oil port above guide's valve body in the utility model.
Figure 11 is above the utility model high speed switch high-pressure fuel feeding guide spool, the corresponding relation figure of each valve port step and hydraulic oil port.
Figure 12 is the utility model high speed switch oil extraction-above the repairing guide spool, the corresponding relation figure of each valve port step and hydraulic oil port.
Figure 13 is the motion flow control graph of each plunger position of the utility model and its related valves.
Figure 14 be in the utility model each pilot valve and driving bearing thereof at the position view of state A
Figure 15 is each main valve of the utility model and its pilot valve position view at state A.
Figure 16 is each main valve of the utility model and its pilot valve local location schematic representation at state A.
Figure 17 is each main valve of the utility model and its pilot valve local location schematic representation at state B.
Figure 18 is each main valve of the utility model and its pilot valve local location schematic representation at state C.
Figure 19 is each main valve of the utility model and its pilot valve local location schematic representation at state D.
Figure 20 is each main valve of the utility model and its pilot valve local location schematic representation at state E.
Figure 21 is each main valve of the utility model and its pilot valve local location schematic representation at state F.
Among the figure, 1 plunger case, 2 plunger cavity separating valve bodies, 3 main valve bodies, 4 guide's valve bodies, 5 oil distribution casings, 6 speed-sensitive switch high-pressure oil feed pilot valve driving bearings, 7 speed-sensitive switches oil extraction-repairing pilot valve driving bearing, 8 speed-sensitive switch high-pressure oil feed pilot valves, 9 speed-sensitive switches oil extraction-repairing pilot valve, 10 speed-sensitive switch high-pressure oil feed valve pockets, 11 speed-sensitive switch high-pressure oil feed spools, 12 speed-sensitive switch high-pressure oil feed valve springs, 13 speed-sensitive switches oil extraction-repairing valve pocket, 14 speed-sensitive switches oil extraction-repairing spool, 15 speed-sensitive switches oil extraction-Fill valve spring, 16 center plunger cavities, 17 plunger cavities, 18 oil distribution casing high pressure oil runners, 19 oil distribution casing oil return runners, 20 speed-sensitive switch high-pressure oil feed valve shafts are to hydraulic fluid port, the circumferential hydraulic fluid port of 21 speed-sensitive switch high-pressure oil feed valves, 22 speed-sensitive switch high-pressure oil feed valve spring chambeies, 23 speed-sensitive switch high-pressure oil feed pilot valves are near the case side end face, 24 speed-sensitive switch high-pressure oil feed pilot valves are near the cavity volume between case side end face and the speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, 25 speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feeds control step, 26 speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feeds control step and speed-sensitive switch high-pressure oil feed pilot valve are near the cavity volume between the central side end face, 27 speed-sensitive switch high-pressure oil feed pilot valves are near the central side end face, the axial hydraulic fluid port of 28 speed-sensitive switch oil extraction-Fill valves, the circumferential hydraulic fluid port of 29 speed-sensitive switch oil extraction-Fill valves, 30 speed-sensitive switches oil extraction-Fill valve spring chamber, 31 speed-sensitive switches oil extraction-repairing pilot valve is near the case side end face, 32 speed-sensitive switches oil extraction-repairing pilot valve is near the cavity volume between case side end face and the speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step, 33 speed-sensitive switches oil extraction-repairing pilot valve oil extraction-repairing control step, 34 speed-sensitive switches oil extraction-repairing pilot valve oil extraction-repairing control step and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step is near the cavity volume between the central side end face, 35 speed-sensitive switches oil extraction-repairing pilot valve is near the central side end face, 36 seal rings, 37 speed-sensitive switch high-pressure oil feed pilot valves are near the cavity volume between case side end face and the high-pressure oil feed control step and the passage of plunger cavity, 38 speed-sensitive switches oil extraction-repairing pilot valve is near cavity volume and plunger cavity connecting passage between case side end face and the oil extraction-repairing control step, 39 speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feeds control step is near cavity volume and oil distributing valve group high pressure oil runner connecting passage between central side end face and the close central side end face of speed-sensitive switch high-pressure oil feed pilot valve, 40 speed-sensitive switches oil extraction-repairing pilot valve oil extraction-repairing control step is near cavity volume and oil distributing valve group high pressure oil runner connecting passage between central side end face and the close central side end face of speed-sensitive switch oil extraction-repairing pilot valve, 41 speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feeds control step and speed-sensitive switch high-pressure oil feed valve spring chamber connecting passage, 42 speed-sensitive switches oil extraction-repairing pilot valve oil extraction-repairing control step and speed-sensitive switch oil extraction-Fill valve spring chamber connecting passage, 43 speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feeds control step is near cavity volume and the circumferential hydraulic fluid port connecting passage of speed-sensitive switch high-pressure oil feed valve between central side end face and the close central side end face of speed-sensitive switch high-pressure oil feed pilot valve, 44 speed-sensitive switches oil extraction-repairing pilot valve oil extraction-repairing control step is near cavity volume and the circumferential hydraulic fluid port connecting passage of speed-sensitive switch oil extraction-Fill valve between central side end face and the close central side end face of speed-sensitive switch oil extraction-repairing pilot valve, 45 controlling and driving shells, 46 speed-sensitive switch high-pressure oil feed pilot valve driving bearing control valve bodies, 47 speed-sensitive switch high-pressure oil feed pilot valve driving bearings control plunger, 48 speed-sensitive switch high-pressure oil feed pilot valve driving bearing control springs, 49 speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablets, 50 speed-sensitive switches oil extraction-repairing pilot valve driving bearing control valve body, 51 speed-sensitive switches oil extraction-repairing pilot valve driving bearing control plunger, 52 speed-sensitive switches oil extraction-repairing pilot valve driving bearing control spring, 53 speed-sensitive switches oil extraction-repairing pilot valve driving bearing control spring compressing tablet, 54 high-pressure rotary supporting components, 55 low pressure rotation supporting component, 56 rear end covers, 57 high pressure hydraulic fluid ports, 58 return openings, 59 speed-sensitive switch high-pressure oil feed pilot valve driving bearings control piston spring chamber, 60 speed-sensitive switches oil extraction-repairing pilot valve driving bearing control piston spring chamber.
Embodiment
In conjunction with the accompanying drawings, below by specific embodiment the utility model is elaborated.
As shown in drawings, the switch motor variable-torque oil distribution mechanism of the suction oil independent regulation that provides in the specific embodiment, comprise moment of torsion output mechanism, quantitative swash plate, plunger case 1, plunger and plunger cavity 17, comprise that also oil distributing valve group, oil distribution casing group and switch become torque driving mechanism;
Described oil distributing valve group is by speed-sensitive switch high-pressure oil feed valve, the speed-sensitive switch oil extraction-Fill valve identical with number of plungers, speed-sensitive switch high-pressure oil feed pilot valve 8, speed-sensitive switch oil extraction-repairing pilot valve 9 and public join oily main valve body 3 and constitute, each plunger and corresponding plunger cavity 17 corresponding speed-sensitive switch high-pressure oil feed valves thereof and corresponding with it speed-sensitive switch high-pressure oil feed pilot valve 8, a speed-sensitive switch oil extraction-Fill valve and a corresponding with it speed-sensitive switch oil extraction-repairing pilot valve 9; Each speed-sensitive switch high-pressure oil feed valve comprises a speed-sensitive switch high-pressure oil feed valve pocket 10, a speed-sensitive switch high-pressure oil feed spool 11, a speed-sensitive switch high-pressure oil feed valve spring 12, a speed-sensitive switch high-pressure oil feed valve shaft is to hydraulic fluid port 20 and the circumferential hydraulic fluid port 21 of speed-sensitive switch high-pressure oil feed valve, a speed-sensitive switch high-pressure oil feed valve spring chamber 22, each speed-sensitive switch oil extraction-Fill valve comprises a speed-sensitive switch oil extraction-repairing valve pocket 13, a speed-sensitive switch oil extraction-repairing spool 14, a speed-sensitive switch oil extraction-Fill valve spring 15, an axial hydraulic fluid port 28 of speed-sensitive switch oil extraction-Fill valve and 29 1 speed-sensitive switch oil extraction-Fill valve spring chambers 30 of a circumferential hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve; Include separately spool, spring, spring chamber, axially hydraulic fluid port, circumferential hydraulic fluid port with each speed-sensitive switch oil extraction-Fill valve; Each speed-sensitive switch high-pressure oil feed pilot valve 8 all has a speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step 25, and each speed-sensitive switch oil extraction-repairing pilot valve 9 all has a speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step 33; 232524；252726；-31--33---32,--33-35---34； The speed-sensitive switch high-pressure oil feed valve and the speed-sensitive switch oil extraction-Fill valve of each plunger correspondence all are arranged side by side, and the plunger cavity 17 that its axial hydraulic fluid port is all corresponding with it is communicated with; The circumferential hydraulic fluid port 21 of each speed-sensitive switch high-pressure oil feed valve, all pass the high-pressure oil feed control step of speed-sensitive switch high-pressure oil feed pilot valve and the cavity volume 26 between the close central side end face of its speed-sensitive switch high-pressure oil feed pilot valve, be communicated with the high pressure oil runner 18 of oil distribution casing group; The circumferential hydraulic fluid port 29 of each speed-sensitive switch oil extraction-Fill valve, all pass the oil extraction-repairing control step of speed-sensitive switch oil extraction-repairing pilot valve and the cavity volume 34 between the close central side end face of its speed-sensitive switch oil extraction-repairing pilot valve, be communicated with the oil return runner 19 of oil distribution casing; The spring chamber 22 of each speed-sensitive switch high-pressure oil feed valve all is communicated with speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step 25 on the corresponding pilot valve, the spring chamber 30 of each speed-sensitive switch oil extraction-Fill valve all with pilot valve accordingly on speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step 33 and be communicated with; Two end faces of each speed-sensitive switch high-pressure oil feed pilot valve 8 and speed-sensitive switch oil extraction-repairing pilot valve 9 (near case side end face and close central side end face) all are communicated with the leakage hydraulic fluid port, and each speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step all is communicated with the high pressure oil runner 18 of oil distribution casing group near the cavity volume 26 between the end face of central side with speed-sensitive switch high-pressure oil feed pilot valve; Each speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step all is communicated with the oil return runner of oil distribution casing near the cavity volume 34 between the central side end face with speed-sensitive switch oil extraction-repairing pilot valve; Each speed-sensitive switch high-pressure oil feed pilot valve all links to each other with corresponding plunger cavity 17 near the cavity volume 24 that case side end face and its speed-sensitive switch high-pressure oil feed pilot valve high pressure are total between the fuel feeding control step, and each speed-sensitive switch oil extraction-repairing pilot valve all links to each other with corresponding plunger cavity 17 near the cavity volume 32 between case side end face and its speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step; All speed-sensitive switch high-pressure oil feed pilot valves 8 are positioned on the same cross section, and all speed-sensitive switch oil extraction-repairing pilot valves 9 are positioned on the same cross section;
Described oil distribution casing group is joined the end face that oily guide's valve body 4 is positioned at the plunger opposite side and is contacted with described, no relative movement, and there are oil distribution casing high pressure oil runner 18 and oil distribution casing oil return runner 19 in oil distribution casing group inside; All speed-sensitive switch high-pressure oil feed pilot valves are communicated with cavity volume 26 between the close central side end face of speed-sensitive switch high-pressure oil feed pilot valve at speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step on the oil distribution casing high pressure oil runner 18 of oil distribution casing group switching centre and the described oil distributing valve group, and the oil distribution casing high pressure oil runner 18 on the oil distribution casing group is communicated with the high pressure hydraulic fluid port 57 on the housing rear end cover 56; All speed-sensitive switch oil extraction-repairing pilot valves are communicated with cavity volume 34 between the close central side end face of speed-sensitive switch oil extraction-repairing pilot valve at speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step on the annular oil distribution casing oil return runner 19 in oil distribution casing group switching centre oil distribution casing high pressure oil runner 18 outsides and the described oil distributing valve group, and the annular oil distribution casing oil return runner 19 on the oil distribution casing group is communicated with the oil return hydraulic fluid port 58 on the housing rear end cover 56; The leakage oil runner that leaks on oily runner and the pump body is shared, is communicated with leakage hydraulic fluid port on the housing; Between the annular oil distribution casing oil return runner 19 in described oil distribution casing group switching centre oil distribution casing high pressure oil runner 18 and its outside, adopt high-pressure rotary supporting component 54 and low pressure rotation supporting component 55 to provide rotation to support respectively between the annular oil distribution casing oil return runner 19 in the high pressure oil runner outside, center and the leakage oil runner, relatively rotate between oil distribution casing group and the housing rear end cover 56 near case side.
The switch motor variable-torque oil distribution mechanism of suction oil independent regulation, its switch becomes torque driving mechanism and is divided into high-pressure oil feed driving mechanism and oil extraction-repairing driving mechanism, wherein the high-pressure oil feed driving mechanism is by a speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control valve body control plungers 46, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger 47 valve bodies, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control springs 48, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablets 49 and two the speed-sensitive switch high-pressure oil feed pilot valve driving bearing control piston spring chambeies 59 corresponding with spring are formed, and oil extraction-repairing driving mechanism is by a speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 and two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control valve body 50 control plungers, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger 51 valve bodies, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control springs 52, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablets 53 and two the speed-sensitive switch oil extractions-repairing pilot valve driving bearing control piston spring chamber 60 corresponding with spring are formed; Two speed-sensitive switch high-pressure oil feed pilot valve driving bearings control plunger 47 of speed-sensitive switch high-pressure oil feed driving mechanism with in speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 axis normal, with this bearing movable direction place straight line conllinear, tangent with this bearing outer ring, circumferencial direction is uniform, each speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger 47 is installed speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring 48 with discontiguous other end, speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 outer rings, the other end of speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring 48 is provided with speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablet 49, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger 47, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring 48, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablet 49 all is positioned at speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger valve body 46, its inner speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring chamber 59 is communicated with the control oil channel of outside, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger valve body 46 is coaxial with speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger 47, be installed on the controlling and driving shell 45, the speed-sensitive switch high-pressure oil feed pilot valve on the speed-sensitive switch high-pressure oil feed pilot valve 8 of speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 inner rings and its driving contact and provides the rotation support near case side end face 23; Two speed-sensitive switch oil extractions of speed-sensitive switch oil extraction-repairing driving mechanism-repairing pilot valve driving bearing control plunger 51 with in speed-sensitive switch oil extraction-repairing high-pressure oil feed pilot valve driving bearing 7 axis normal, with this bearing movable direction place straight line conllinear, tangent with this bearing outer ring, circumferencial direction is uniform, each speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger 51 is installed speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring 52 with discontiguous other end, speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 outer rings, the other end of speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring 52 is provided with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablet 53, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger 51, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring 52, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablet 53 all is positioned at speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger valve body 50, its inner speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring chamber 60 is communicated with the control oil channel of outside, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger valve body 50 is coaxial with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger 51, be installed on the controlling and driving shell 45, the speed-sensitive switch oil extraction-repairing pilot valve on the speed-sensitive switch oil extraction-repairing pilot valve 9 of speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 inner rings and its driving contact and provides the rotation support near case side end face 31; 6 control speed-sensitive switches of speed-sensitive switch high-pressure oil feed pilot valve driving bearing high-pressure oil feed pilot valve 8,8 control speed-sensitive switches of speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed valve, speed-sensitive switch oil extraction-7 control speed-sensitive switch oil extraction-repairing pilot valves 9 of repairing pilot valve driving bearing, speed-sensitive switch oil extraction-9 control speed-sensitive switches of repairing pilot valve oil extraction-Fill valve has realized that so the suction of oil distribution mechanism, oil extraction control independent regulation separately.
The oil distribution casing group is made up of oil distribution casing 5, high-pressure rotary supporting component 54, low pressure rotation supporting component 55 and rear end cover 56, is that traditional oil distribution casing of being symmetrically distributed of center is different with suction, oil extraction waist shaped hole with suction oil content interface, there are oil distribution casing high pressure oil runner 18 and oil distribution casing oil return runner 19 in oil distribution casing 5 inside, the central cylindrical runner is as oil distribution casing high pressure oil runner 18, the ring runner in oil distribution casing high pressure oil runner 18 outsides is as oil distribution casing oil return runner 19, and oil distribution casing oil return runner 19 outer exterior wall are for revealing oil pocket; The round regional side in center is communicated with high pressure oil runner on guide's valve body on oil distribution casing 5 and guide's valve body 4 counterfaces, high pressure oil runner 18 directly is communicated with on the other end and the oil distribution casing, annular region one side in the border circular areas outside is communicated with the oil return runner on guide's valve body, the other end is identical by 4, and the uniform waist shaped hole of circumferencial direction is communicated with annular oil return runner 19 on the oil distribution casing; High-pressure rotary supporting component 54 provides the sealing between oil distribution casing high pressure oil runner 18 and the oil distribution casing oil return runner 19, low pressure rotation supporting component 55 provides the sealing between oil distribution casing oil return runner 19 and the oily runner of leakage, and 55 assemblies are supported in high-pressure rotary supporting component 54 and low pressure rotation provides the rotation between oil distribution casing 5 assemblies and rear end cover 56 housings to support jointly.
Speed-sensitive switch high-pressure oil feed pilot valve 8 axis are the axis symmetry in the projection on the plane, high-speed switch valve place and the speed-sensitive switch oil extraction-projection of repairing pilot valve 9 axis on plane, high-speed switch valve place with suction oil content boundary line.
The inwall central axis of speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 is parallel with the central axis of described plunger case 1, and along having the direction of a less angle that a fixed bias is arranged with suction oil content boundary line, speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 can and can only be in the Vertical direction move left and right of this direction; The inwall central axis of speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 is parallel with the central axis of described plunger case 1, and along having the direction of a less angle that a fixed bias is arranged with suction oil content boundary line, about suction oil content interface symmetry, speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 can and can only be in the Vertical direction move left and right of this direction in the projection on plane, high-speed switch valve place for this direction and speed-sensitive switch high-pressure oil feed pilot valve driving bearing 7 fixed bias directions.
Described speed-sensitive switch high-pressure oil feed pilot valve is near the end face 27 of central side, its diameter is more smaller than the diameter of speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step 25, this area difference provides a pressure radially for speed-sensitive switch high-pressure oil feed pilot valve 8, makes all speed-sensitive switch high-pressure oil feed pilot valves 8 can both be pressed on the described change torque high speed switch high-pressure fuel feeding pilot valve driving bearing 6. Described speed-sensitive switch oil extraction-repairing pilot valve is near the end face 35 of central side, its diameter is littler than the diameter of speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step 33, this area difference provides a pressure radially for speed-sensitive switch oil extraction-repairing pilot valve 9, makes all speed-sensitive switch oil extraction-repairing pilot valves 9 can both be pressed on described change torque high speed switch oil extraction-repairing pilot valve driving bearing 7.
Described oil distributing valve body axially is being divided into three: plunger cavity separating valve body 2, main valve body 3, guide's valve body 4; Plunger cavity separating valve body 2, main valve body 3, guide's valve body 4 are rigidly connected on the plunger case 1 by pin, and oil distributing valve body and oil distribution casing group link together by screw; The outer rim of all hydraulic fluid ports all is provided with seal ring between plunger cavity separating valve body 2 and main valve body 3, main valve body 3 and guide's valve body 4, guide's valve body 4 and oil distribution casing group, plunger cavity separating valve body 2 and the plunger case 1.
The width that step 33 is controlled in the high-pressure oil feed control step 25 of described speed-sensitive switch high-pressure oil feed pilot valve and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing all with the undercut groove width is consistent accordingly on guide's valve body, makes pilot valve can respond the variation of plunger position fast.
When the displacement of described speed-sensitive switch high-pressure oil feed pilot valve controlling and driving bearing 6 and speed-sensitive switch oil extraction-repairing pilot valve controlling and driving bearing 7 is zero, the spring chamber 22 of speed-sensitive switch high-pressure oil feed valve is except oil extraction-oil suction transition point is isolated, other positions all are communicated with the oil distribution casing high pressure oil runner 18 of oil distribution casing group switching centre, make speed-sensitive switch high-pressure oil feed valve keep closing, the spring chamber 30 of speed-sensitive switch oil extraction-Fill valve is except oil suction-oil extraction transition point is isolated, other positions all are communicated with plunger cavity 17, speed-sensitive switch oil extraction-Fill valve is stayed open, make the motor can be from oil distribution casing oil return runner 19 repairings of oil distribution casing group.
When 6 displacements of described speed-sensitive switch high-pressure oil feed pilot valve controlling and driving bearing were zero, the initial displacement of speed-sensitive switch high-pressure oil feed pilot valve 8 was negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and the fixed bias between plunger case 1 central axis; High-pressure oil feed control step 25 on the speed-sensitive switch high-pressure oil feed pilot valve cuts off speed-sensitive switch high-pressure oil feed valve spring chamber 22, speed-sensitive switch high-pressure oil feed pilot valve mutually near the cavity volume 26 between its high-pressure oil feed control step of central side end face near central side and speed-sensitive switch high-pressure oil feed pilot valve near the cavity volume 24 between case side end face and its high-pressure oil feed control step of speed-sensitive switch high-pressure oil feed pilot valve, speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step; Described speed-sensitive switch oil extraction-when 7 displacements of repairing pilot valve control bearing were zero, the initial displacement of speed-sensitive switch oil extraction-repairing pilot valve 9 was the speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 of twice and the fixed bias between plunger case 1 central axis; Oil extraction on speed-sensitive switch oil extraction-repairing pilot valve-repairing control step 33 is communicated with the spring chamber 30 of speed-sensitive switch oil extraction-Fill valve with plunger cavity 17, and speed-sensitive switch oil extraction-repairing pilot valve 9 valve port opening are the speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 of twice and the fixed bias between plunger case 1 central axis.
Switch motor variable-torque oil distribution mechanism based on aforementioned suction oil independent regulation at first is defined as follows initial position and postive direction:
1. get on the suction oil content boundary line, plunger is a starting point when being in plunger thick stick tube 1 bosom, and start angle is 0 °;
2. over against output shaft, to get left-handedly for just, dextrorotation is for negative;
3. all pilot valve driving ring bearings are to the right for just, left for negative;
4. all guide's spools move upward into just, downwards for negative;
5. all pilot valve displacement intermediate values are defined as 0 of spool;
6. coordinate axes is got and is faced output shaft, and level is to the right the X-axis postive direction, is the Y-axis postive direction straight up;
7. be initial point with plunger case 1 center, the variable driving bearing hoop right side, upwards for just, left, downwards for bearing;
This switch method for changing torque may further comprise the steps:
(1), regulates speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7, in order to change dutycycle switching time of each speed-sensitive switch high-pressure oil feed valve according to requirement to the output torque size;
(2) opening time of control speed-sensitive switch high-pressure oil feed valve, make only when speed-sensitive switch high-pressure oil feed opening of valves, can promote corresponding plunger acting by the plunger cavity 17 that is positioned at the oil suction district from 57 oil suctions of high pressure hydraulic fluid port; The plunger cavity 17 that is positioned at the oil suction district is when the speed-sensitive switch delivery valve is closed, and all the speed-sensitive switch oil extraction-Fill valve by communicating with return opening 58 directly from return opening 58 oil suctions, replenishes the cavity that plunger motion produces, but can not promote the plunger acting; Meanwhile, be positioned at the plunger cavity in oil extraction district, only when speed-sensitive switch high-pressure oil feed valve cuts out, can directly be discharged to return opening 17, do not hinder plunger motion by the speed-sensitive switch oil extraction-Fill valve that communicates with return opening 17; The plunger cavity 17 that is positioned at the oil extraction district when speed-sensitive switch oil extraction-Fill valve is closed, all by the high-pressure oil feed valve to 57 oil extractions of high pressure hydraulic fluid port, be operated in the pump operating mode, realize to slow down and braking, and Brake Energy be converted back into the pressure energy; 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 displacement of speed-sensitive switch high-pressure oil feed valve opening time section inner plunger is inhaled at whole plunger, the real-time regulated of dutycycle in the oil extraction stroke, the average torque that output is directly proportional with dutycycle realizes that the change moment of torsion controls; Pass between dutycycle and the average torque is:
T=[D 1-(1-D 2)] * (D m* P * η Machine* η Valve)
The displacement y of driving bearing and the pass between the plunger displacement dutycycle are:
D 1=d Open 1/ 2d Max=1-sin[2atan (| X P/ Y P|)]/4
D 2=d Open 2/ 2d Max=1-sin[2atan (| X T/ Y T|)]/4
Wherein: D 1For the displacement of plunger when speed-sensitive switch high-pressure oil feed valve is opened oil suction when the oil suction stroke inhaled at whole plunger, dutycycle in the oil extraction stroke, D 2For the displacement of plunger when speed-sensitive switch oil extraction-Fill valve is opened oil extraction when the oil extraction stroke inhaled at whole plunger, sky ratio in the oil extraction stroke, d Open 1Plunger displacement during for plunger oil suction stroke in the speed-sensitive switch high-pressure oil feed valve opening time section, d Open 2The plunger displacement of speed-sensitive switch oil extraction-Fill valve opening time section during for plunger oil extraction stroke, d MaxBe plunger suction oil one way stroke, T is for needing the average torque of output, D mBe the discharge capacity of oil hydraulic motor, P is the pressure of high pressure hydraulic fluid port, η MachineBe the mechanical efficiency of oil hydraulic motor, η ValveBe the efficient of oil distributing valve group, Y PBe the inwall center of speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias displacement between the plunger case central axis, X PFor the displacement amplitude of speed-sensitive switch high-pressure oil feed pilot valve is the displacement of speed-sensitive switch high-pressure oil feed pilot valve driving bearing, Y TBe the inwall center of speed-sensitive switch oil extraction-repairing pilot valve driving bearing and the fixed bias displacement between the plunger case central axis, X TFor the displacement amplitude of speed-sensitive switch oil extraction-repairing pilot valve is the displacement of speed-sensitive switch oil extraction-repairing pilot valve driving bearing;
When (4) being in the motor operating mode, for speed-sensitive switch high-pressure oil feed pilot valve driving bearing, when oil hydraulic motor is just changeing, X P＜0, oil hydraulic motor when counter-rotating, then X P＞0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing, when oil hydraulic motor is just changeing, X T=+Max, oil hydraulic motor when counter-rotating, then X T=-Max; When being in the pump operating mode, for speed-sensitive switch high-pressure oil feed pilot valve driving bearing, during the oil hydraulic pump clockwise and anticlockwise, X P=0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing, when oil hydraulic pump is just changeing, X T＞0, oil hydraulic pump when counter-rotating, then X T＜0; Y P＞0, Y T＜0 is fixed bias.
As an example of concrete application of the present utility model, the rotating cylinder barrel plunger piston hydraulic slave motor of the machine solution guide switch changing torque oil-distribution component of a kind of suction of having adopted the utility model to provide, draining valve independent regulation specifically has been discussed herein, be described in detail as follows:
Remove the bonnet and the oil distribution casing of plunger-type quantitative hydraulic motor, the end face of plunger case is processed into the plane, oil-distribution component of the present utility model is installed to original bonnet of oil hydraulic motor and oil distribution casing position, be connected by pin between plunger case and the oil-distribution component.Common rotating sleeve plunger-type quantitative hydraulic motor has just been repacked into the oil hydraulic motor of a machine solution guide switch changing torque function with suction, draining valve independent regulation.
According to foregoing structure and controlling method, the working procedure when this oil hydraulic motor is just changeing is shown in accompanying drawing 13～21.Each plunger whenever turns around, and has all experienced 6 states (4 major states and 2 transition states):
(1) state A: high drive state: when just changeing, X P＜0, X T＞0,8 displacements of speed-sensitive switch high-pressure oil feed pilot valve are less than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and the fixed bias between plunger case 1 central axis, speed-sensitive switch oil extraction-repairing pilot valve 9 displacements are greater than the fixed bias between speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 and plunger case 1 central axis, and plunger advancement; Under the effect of speed-sensitive switch high-pressure oil feed pilot valve 8, when plunger cavity 17 is linked up with speed-sensitive switch high-pressure oil feed valve spring chamber 22, speed-sensitive switch high-pressure oil feed valve is opened under the pressure effect of high pressure hydraulic fluid port 57, thereby the pressure of plunger cavity 17 near but a little less than the pressure of high pressure hydraulic fluid port 57, plunger cavity 17 is logical with speed-sensitive switch oil extraction-Fill valve spring chamber ditch 30 simultaneously, and speed-sensitive switch oil extraction-Fill valve keeps closing under the pressure effect of plunger cavity 17;
(2) state B, C: idle stroke state: wherein B is a transition state, C is the repairing state; 8 displacements of speed-sensitive switch high-pressure oil feed pilot valve are greater than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and the fixed bias between plunger case 1 central axis, speed-sensitive switch oil extraction-repairing pilot valve 9 displacements are greater than the fixed bias between speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 and plunger case 1 central axis, and plunger advancement; Under the effect of speed-sensitive switch high-pressure oil feed pilot valve 8, high pressure hydraulic fluid port 57 is linked up with speed-sensitive switch high-pressure oil feed valve spring chamber 22, the quick closedown under the pressure effect of high pressure hydraulic fluid port 57 of speed-sensitive switch high-pressure oil feed valve, plunger moves on and causes plunger cavity 17 volumes to increase, pressure drops to the back pressure that is lower than return opening 58 fast, plunger cavity 17 is linked up with speed-sensitive switch oil extraction-Fill valve spring chamber 30 simultaneously, oil extraction-Fill valve is opened after the pressure of plunger cavity 17 is reduced to below return opening 58 back pressures, and wherein the process opened of speed-sensitive switch oil extraction-Fill valve is transition state B; It is repairing state C from the return opening repairing up to the process that arrives suction oil content interface that speed-sensitive switch oil extraction-Fill valve is opened back-plunger;
(3) state D: normal oil return state: 8 displacements of speed-sensitive switch high-pressure oil feed pilot valve are greater than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and the fixed bias between plunger case 1 central axis, speed-sensitive switch oil extraction-repairing pilot valve 9 displacements are greater than the fixed bias between speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 and plunger case 1 central axis, and plunger retreats; Under the effect of speed-sensitive switch high-pressure oil feed pilot valve 8, speed-sensitive switch high-pressure oil feed valve spring chamber 22 is communicated with high pressure hydraulic fluid port 57, and the high-pressure oil feed valve keeps cutting out; The return opening 58 of band back pressure is linked up with speed-sensitive switch oil extraction-Fill valve spring chamber 30, because during the plunger oil extraction, plunger cavity 17 pressure near and a little more than the band back pressure return opening 58 pressure, carry out normal oil return so speed-sensitive switch oil extraction-Fill valve stays open state under the pressure effect of plunger cavity 17;
(4) state E, F: pump output state: wherein E is a transition state, F is the pump output state; 8 displacements of speed-sensitive switch high-pressure oil feed pilot valve are greater than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and the fixed bias between plunger case 1 central axis, speed-sensitive switch oil extraction-repairing pilot valve 9 displacements are less than the fixed bias between speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 and plunger case 1 central axis, and plunger retreats; Under the effect of speed-sensitive switch oil extraction-repairing pilot valve 9, plunger cavity 17 is linked up with speed-sensitive switch oil extraction-Fill valve spring chamber 30, speed-sensitive switch oil extraction-Fill valve is closed under the pressure effect of plunger cavity 17, plunger continues to retreat and causes plunger cavity 17 volumes to reduce, pressure is climbed to the pressure above high pressure hydraulic fluid port 57, high pressure hydraulic fluid port 57 is linked up with speed-sensitive switch high-pressure oil feed valve spring chamber 22 simultaneously, and speed-sensitive switch high-pressure oil feed valve is opened after the pressure of plunger cavity 17 rises to more than high pressure hydraulic fluid port 57 pressure; Wherein state E is this transition state of speed-sensitive switch high-pressure oil feed opening of valves process, and state F is that plunger is by forwarding row's oil suction separating surface to 57 oil extractions of high pressure hydraulic fluid port to up to plunger.
At last, it should be noted that above what enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.

Claims (10)

1. the switch motor variable-torque oil distribution mechanism of a suction oil independent regulation comprises plunger case, plunger and plunger cavity, it is characterized in that, comprises that also oil distributing valve group, oil distribution casing group and switch become torque driving mechanism;
Described oil distributing valve group is by speed-sensitive switch high-pressure oil feed valve, the speed-sensitive switch oil extraction-Fill valve identical with number of plungers, the high-pressure oil feed pilot valve, oil extraction-repairing pilot valve and public oil distributing valve body constitute, each plunger and the corresponding speed-sensitive switch high-pressure oil feed valve of corresponding plunger cavity thereof and corresponding with it speed-sensitive switch high-pressure oil feed pilot valve, a speed-sensitive switch oil extraction-Fill valve and corresponding with it speed-sensitive switch oil extraction-repairing pilot valve; Each speed-sensitive switch high-pressure oil feed valve comprises a speed-sensitive switch high-pressure oil feed spool, a speed-sensitive switch high-pressure oil feed valve spring, a speed-sensitive switch high-pressure oil feed valve spring chamber, a speed-sensitive switch high-pressure oil feed valve shaft is to hydraulic fluid port, a circumferential hydraulic fluid port of speed-sensitive switch high-pressure oil feed valve and a speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, each speed-sensitive switch oil extraction-Fill valve comprises a speed-sensitive switch oil extraction-repairing spool, a speed-sensitive switch oil extraction-Fill valve spring, a speed-sensitive switch oil extraction-Fill valve spring chamber, the axial hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve, a circumferential hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve and a speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step; Between each speed-sensitive switch high-pressure oil feed pilot valve is near case side end face and speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, between speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and the close central side end face cavity volume is arranged respectively, between each speed-sensitive switch oil extraction-repairing pilot valve was near case side end face and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step, speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step and speed-sensitive switch oil extraction-repairing pilot valve respectively had a cavity volume near between the central side end face; The speed-sensitive switch high-pressure oil feed valve and the speed-sensitive switch oil extraction-Fill valve of each plunger correspondence all are arranged side by side, and speed-sensitive switch high-pressure oil feed valve shaft is communicated with to hydraulic fluid port and all corresponding with it plunger cavity of the axial hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve; The circumferential hydraulic fluid port of each speed-sensitive switch high-pressure oil feed valve all passes speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and speed-sensitive switch high-pressure oil feed pilot valve near the cavity volume between the central side end face, is communicated with oil distribution casing high pressure oil runner; The circumferential hydraulic fluid port of each speed-sensitive switch oil extraction-Fill valve all passes speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step and speed-sensitive switch oil extraction-repairing pilot valve near the cavity volume between the central side end face, is communicated with oil distribution casing oil return runner; Each speed-sensitive switch high-pressure oil feed valve spring chamber all is communicated with corresponding speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, and each speed-sensitive switch oil extraction-Fill valve spring chamber all is communicated with corresponding speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step; Two end faces of each speed-sensitive switch high-pressure oil feed pilot valve and speed-sensitive switch oil extraction-repairing pilot valve (near case side end face and close central side end face) all are communicated with the leakage hydraulic fluid port, and each speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step is communicated with oil distribution casing high pressure oil runner near the cavity volume between the end face of central side with speed-sensitive switch high-pressure oil feed pilot valve; Each speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step is communicated with oil distribution casing oil return runner near the cavity volume between the central side end face with speed-sensitive switch oil extraction-repairing pilot valve; Each speed-sensitive switch high-pressure oil feed pilot valve links to each other with the speed-sensitive switch high-pressure oil feed pilot valve high pressure plunger cavity that the cavity volume between the fuel feeding control step is all corresponding with corresponding speed-sensitive switch high-pressure oil feed pilot valve altogether near the case side end face, and the cavity volume that each speed-sensitive switch oil extraction-repairing pilot valve is controlled between the step near case side end face and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing all links to each other with the corresponding plunger cavity that the speed-sensitive switch oil extraction-the repairing pilot valve is corresponding; All speed-sensitive switch high-pressure oil feed pilot valves are positioned on the same cross section, and all speed-sensitive switch oil extraction-repairing pilot valves are positioned on the same cross section;
Described oil distribution casing group is screwed the end face that is positioned at the plunger opposite side in described oil distributing valve body, and there are high pressure oil runner and oil return runner in oil distribution casing group inside; Speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step on the oil distribution casing high pressure oil runner of oil distribution casing group switching centre and described all speed-sensitive switch high-pressure oil feed pilot valves is communicated with cavity volume between the close central side end face of speed-sensitive switch high-pressure oil feed pilot valve, and oil distribution casing high pressure oil runner is communicated with high pressure hydraulic fluid port on the housing; The annular oil distribution casing oil return runner in the oil distribution casing high pressure oil runner outside of oil distribution casing group switching centre is controlled step with the speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing on described all speed-sensitive switch oil extraction-repairing pilot valves and is communicated with near the cavity volume between the central side end face with speed-sensitive switch oil extraction-repairing pilot valve, and the annular oil distribution casing oil return runner on the oil distribution casing group is communicated with the return opening on the housing; The leakage oil runner that leaks on oily runner and the pump body is shared, is communicated with leakage hydraulic fluid port on the housing; Between the annular oil distribution casing oil return runner in described oil distribution casing group switching centre oil distribution casing high pressure oil runner and its outside, adopt high-pressure rotary supporting component and low pressure rotation supporting component to provide rotation to support respectively between annular oil distribution casing oil return runner and the leakage oil runner, relatively rotate between oil distribution casing group and the rear end cover near case side.
2. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, it is characterized in that, the switch motor variable-torque oil distribution mechanism of described suction oil independent regulation, its switch becomes torque driving mechanism and is divided into high-pressure oil feed driving mechanism and oil extraction-repairing driving mechanism, wherein the high-pressure oil feed driving mechanism is by a speed-sensitive switch high-pressure oil feed pilot valve driving bearing and two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control valve bodies, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plungers, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control springs, two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablets and two the speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring chambeies corresponding with spring are formed, and oil extraction-repairing driving mechanism is by a speed-sensitive switch oil extraction-repairing pilot valve driving bearing and two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control valve bodies, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plungers, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control springs, two speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablets and two the speed-sensitive switch oil extractions-repairing pilot valve driving bearing control spring chamber corresponding with spring are formed; Control plunger and speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis normal for two of the high-pressure oil feed driving mechanism, with this bearing movable direction place straight line conllinear, tangent with this bearing outer ring, circumferencial direction is uniform, the discontiguous end face of each speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger and speed-sensitive switch high-pressure oil feed pilot valve driving bearing outer ring is installed speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring, the other end of speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring is provided with speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablet, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plunger, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring compressing tablet all is positioned at speed-sensitive switch high-pressure oil feed pilot valve driving bearing control control valve body, its inner speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring chamber is communicated with the control oil channel of outside, speed-sensitive switch high-pressure oil feed pilot valve driving bearing control control valve body is coaxial with speed-sensitive switch high-pressure oil feed pilot valve driving bearing control control plunger, be installed on the controlling and driving shell, speed-sensitive switch high-pressure oil feed pilot valve driving bearing inner ring contacts near the case side end face with the speed-sensitive switch high-pressure oil feed pilot valve of its driving and provides rotation to support; Two speed-sensitive switch oil extractions of speed-sensitive switch oil extraction-repairing driving mechanism-repairing pilot valve driving bearing control plunger and speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis normal, with this bearing movable direction place straight line conllinear, tangent with this bearing outer ring, circumferencial direction is uniform, each speed-sensitive switch oil extraction-discontiguous end face of repairing pilot valve driving bearing control plunger and speed-sensitive switch oil extraction-repairing pilot valve driving bearing outer ring is installed speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring, the other end of speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring is provided with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablet, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring, speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring compressing tablet all is positioned at speed-sensitive switch oil extraction-repairing pilot valve driving bearing control control valve body, its inner spring chamber is communicated with the control oil channel of outside, control valve body is coaxial with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger, be installed on the controlling and driving shell, speed-sensitive switch oil extraction-repairing pilot valve driving bearing inner ring contacts near the case side end face with the speed-sensitive switch oil extraction-repairing pilot valve of its driving and provides rotation to support; Speed-sensitive switch high-pressure oil feed pilot valve driving bearing is only controlled speed-sensitive switch high-pressure oil feed pilot valve, speed-sensitive switch high-pressure oil feed pilot valve is only controlled speed-sensitive switch high-pressure oil feed valve, speed-sensitive switch oil extraction-repairing pilot valve driving bearing is only controlled speed-sensitive switch oil extraction-repairing pilot valve, speed-sensitive switch oil extraction-repairing pilot valve is only controlled speed-sensitive switch oil extraction-Fill valve, has so realized suction, the oil extraction independent regulation of oil distribution mechanism.
3. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, it is characterized in that, described oil distribution casing group is by oil distribution casing, the high-pressure rotary supporting component, low pressure rotation supporting component and rear end cover are formed, with suction, the oil extraction waist shaped hole is traditional oil distribution casing difference that the center is symmetrically distributed with suction oil content interface, there are oil distribution casing high pressure oil runner and oil distribution casing oil return runner in oil distribution casing inside, the central cylindrical runner is as oil distribution casing high pressure oil runner, the ring runner in the oil distribution casing high pressure oil runner outside is as oil distribution casing oil return runner, and oil distribution casing oil return runner outer exterior wall is for revealing oil pocket; The round regional side in center is communicated with pilot valve body high pressure oil runner on oil distribution casing and the guide's valve body counterface, the other end directly is communicated with oil distribution casing high pressure oil runner, annular region one side in the border circular areas outside is communicated with guide's valve body oil return runner, and the other end is communicated with oil distribution casing oil return runner by 4 identical uniform waist shaped holes; The high-pressure rotary supporting component provides the sealing between oil distribution casing high pressure runner and the oil distribution casing oil return runner, low pressure rotation supporting component provides the sealing between oil distribution casing oil return runner and the oily runner of leakage, and high-pressure rotary supporting component and low pressure rotation supporting component provide the rotation between oil distribution casing and the rear end cover to support jointly.
4. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, it is characterized in that described speed-sensitive switch high-pressure oil feed pilot valve axis is the axis symmetry in the projection on the plane, high-speed switch valve place and the speed-sensitive switch oil extraction-projection of repairing pilot valve axis on plane, high-speed switch valve place with suction oil content boundary line.
5. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, it is characterized in that, the inwall central axis of described speed-sensitive switch high-pressure oil feed pilot valve driving bearing is parallel with the central axis of described plunger case, and along having a direction less than 10 ° of angles that a fixed bias is arranged with suction oil content boundary line, speed-sensitive switch high-pressure oil feed pilot valve driving bearing energy and can only be in the Vertical direction move left and right of this direction; The inwall central axis of speed-sensitive switch oil extraction-repairing pilot valve driving bearing is parallel with the central axis of described plunger case, and along having a direction less than 10 ° of angles that a fixed bias is arranged with suction oil content boundary line, this direction and speed-sensitive switch high-pressure oil feed pilot valve driving bearing fixed bias direction in the projection on plane, high-speed switch valve place about suction oil content interface symmetry, speed-sensitive switch oil extraction-repairing pilot valve driving bearing energy and can only be in the Vertical direction move left and right of this direction.
6. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, it is characterized in that, described speed-sensitive switch high-pressure oil feed pilot valve is near the central side end face, its diameter is more smaller than the diameter of speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step, this area difference provides a pressure radially for speed-sensitive switch high-pressure oil feed pilot valve, makes all speed-sensitive switch high-pressure oil feed pilot valves can both be pressed on the described speed-sensitive switch high-pressure oil feed pilot valve driving bearing; Described speed-sensitive switch oil extraction-repairing pilot valve is near the central side end face, its diameter is littler than the diameter of speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step, this area difference provides a pressure radially for speed-sensitive switch oil extraction-repairing pilot valve, makes all speed-sensitive switch oil extraction-repairing pilot valves can both be pressed on described speed-sensitive switch oil extraction-repairing pilot valve driving bearing.
7. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1 is characterized in that described oil distributing valve body axially is being divided into three: plunger cavity separating valve body, main valve body, guide's valve body; Plunger cavity separating valve body, main valve body, guide's valve body are rigidly connected on the plunger case by pin, and oil distributing valve body and oil distribution casing group link together by screw; The outer rim of all hydraulic fluid ports all is provided with seal ring between plunger cavity separating valve body and main valve body, main valve body and guide's valve body, guide's valve body and oil distribution casing group, plunger cavity separating valve body and the plunger case.
8. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, it is characterized in that, the width of described speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step makes pilot valve can respond the variation of plunger position fast all with the undercut groove width is consistent accordingly on guide's valve body.
9. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, it is characterized in that, when the displacement of described speed-sensitive switch high-pressure oil feed pilot valve driving bearing and speed-sensitive switch oil extraction-repairing pilot valve driving bearing is zero, speed-sensitive switch high-pressure oil feed valve spring chamber is except oil extraction-oil suction transition point is isolated, other positions all are communicated with oil distribution casing group switching centre high pressure oil runner, make speed-sensitive switch high-pressure oil feed valve keep closing, speed-sensitive switch oil extraction-Fill valve spring chamber is except oil suction-oil extraction transition point is isolated, other positions all are communicated with plunger cavity, speed-sensitive switch oil extraction-Fill valve is stayed open, make the motor can be from the oil distribution casing oil return runner repairing of oil distribution casing group.
10. the switch motor variable-torque oil distribution mechanism of suction oil independent regulation according to claim 1, when the displacement of described speed-sensitive switch high-pressure oil feed pilot valve driving bearing was zero, the initial displacement of speed-sensitive switch high-pressure oil feed pilot valve was negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias between the plunger case central axis; Speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step cuts off speed-sensitive switch high-pressure oil feed valve spring chamber, speed-sensitive switch high-pressure oil feed pilot valve mutually near the cavity volume between the central side end face near cavity volume, speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step and the speed-sensitive switch high-pressure oil feed pilot valve between case side end face and the speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step; Described speed-sensitive switch oil extraction-when the displacement of repairing pilot valve control bearing was zero, the initial displacement of speed-sensitive switch oil extraction-repairing pilot valve was the speed-sensitive switch oil extraction-repairing pilot valve driving bearing of twice and the fixed bias between the plunger case central axis; Speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step is communicated with speed-sensitive switch oil extraction-Fill valve spring chamber with plunger cavity, and speed-sensitive switch oil extraction-repairing pilot valve valve port opening is the speed-sensitive switch oil extraction-repairing pilot valve driving bearing of twice and the fixed bias between the plunger case central axis.
CN2010202178542U 2010-06-04 2010-06-04 Motor-switching variable-torque oil distribution mechanism with independent adjustment of oil suction and discharge Expired - Fee Related CN201747515U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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