CN102042161B

CN102042161B - Rotary cylinder plunger hydraulic motor for independently adjusting oil absorption and discharge and torque shift method

Info

Publication number: CN102042161B
Application number: CN 201010513569
Authority: CN
Inventors: 李林; 顾临怡
Original assignee: Hangzhou Yukong Mechanical & Electrical Engineering Co Ltd
Current assignee: Hangzhou Yukong Mechanical & Electrical Engineering Co Ltd
Priority date: 2010-10-19
Filing date: 2010-10-19
Publication date: 2013-04-24
Anticipated expiration: 2030-10-19
Also published as: CN102042161A

Abstract

The invention relates to a hydraulic motor and a control method thereof, and aims to provide a hydraulic pilot switch variable torque rotary cylinder plunger hydraulic motor for independently adjusting oil absorption and discharge and a variable torque method. The hydraulic motor comprises a torque output mechanism, a quantitative tilting tray, a plunger cylinder, a plunger, a plunger cavity, an oil distribution valve set, an oil distribution tray set and an independent oil absorption and discharge adjusting variable torque driving mechanism. The switch variable torque method comprises the following steps of: adjusting a variable torque adjustor according to the requirement of the magnitude of the output torque, controlling the opening time of a high-speed switch and a high-voltage oil supply valve, adjusting and outputting duty ratio in real time, implementing variable torque control on the average torque in positive proportion to the duty ratio, and the like. The invention realizes variable torque control, and has the advantages of saving energy, improving the response speed, avoiding the zero passage problem, changing the driving direction of a pilot valve in positive and negative switching and the like.

Description

Rotating cylinder barrel plunger piston hydraulic slave motor and the method for changing torque of suction oil independent regulation

Technical field

The present invention relates to oil hydraulic motor and controlling method thereof, in particular, the present invention relates to a kind of plunger piston hydraulic motor of mechanical-hydraulic leading and method for changing torque 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 adopts in the valve plate distribution is exactly oil distribution casing.The similar plate valve of oil distribution casing, be fitted in the cylinder body end face that has assignment hole by the plane with two arcs (" kidney-shaped ") window, so that cylinder body and oil distribution casing relative rotation on the face perpendicular to motor drive shaft, the relative position of the window on the oil distribution casing and the perforate of cylinder body end face arranges 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 regulator solution pressure 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 act on power on the swash plate 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 offset at internal mutual 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 need to have sizable area to drive 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 large, speed of response is slow, but also is easy to cause near zero point unstable.

Summary of the invention

The object of the invention is to overcome deficiency of the prior art, a kind of plunger piston hydraulic motor of mechanical-hydraulic leading of suction oil independent regulation is provided, further object of the present invention is to provide the switch method for changing torque of this oil hydraulic motor.

For overcoming the above problems, the present invention is achieved through the following technical solutions:

The invention provides a kind of plunger piston hydraulic motor of mechanical-hydraulic leading of suction oil independent regulation, comprise moment of torsion output mechanism, quantitative swash plate, plunger case, plunger and plunger cavity, also comprise the change torque driving mechanism of oil distributing valve group, oil distribution casing group and suction oil independent regulation;

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 formation, each plunger and the corresponding speed-sensitive switch high-pressure oil feed valve of corresponding plunger cavity thereof reach corresponding with it speed-sensitive switch high-pressure oil feed pilot valve, a speed-sensitive switch oil extraction-Fill valve reaches 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-oil recharging valve core, 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, speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step has a cavity volume with close central side end face among, 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 had a cavity volume near central side end face among; Speed-sensitive switch high-pressure oil feed valve and speed-sensitive switch oil extraction-Fill valve that each plunger is corresponding are arranged side by side, speed-sensitive switch high-pressure oil feed valve shaft to hydraulic fluid port and the axial hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve all the plunger cavity corresponding with it be communicated with; 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 near case side end face and speed-sensitive switch high-pressure oil feed pilot valve high pressure altogether the cavity volume between the fuel feeding control step all the plunger cavity corresponding with corresponding speed-sensitive switch high-pressure oil feed pilot valve link to each other, 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; Speed-sensitive switch oil extraction on the annular oil distribution casing oil return runner in the oil distribution casing high pressure oil runner of the oil distribution casing group switching centre outside and described all speed-sensitive switch oil extraction-repairing pilot valves-repairing pilot valve oil extraction-repairing control step is communicated with cavity volume between the close central side end face of 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 shares, and 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 respectively high-pressure rotary supporting component and low pressure rotary support assembly that rotary support is provided between annular oil distribution casing oil return runner and the leakage oil runner near case side, relatively rotate between oil distribution casing group and the rear end cover.

Described oil distribution casing group and cylinder barrel synchronous rotary, between itself and the bearing support deep groove ball bearing and a thrust ball bearing are housed, be used for respectively bearing radial force and end thrust, motor case and transition block are connected by screw, transition block is connected by screw with the control cover of driver, and control cover of driver, bearing support, bonnet extend and bonnet is connected by screw.

As a kind of improvement, the change torque driving mechanism of described suction oil independent regulation, be 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 form, 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 speed-sensitive switch oil extractions corresponding with spring-repairing pilot valve driving bearing control spring chamber forms; Two control plungers of high-pressure oil feed driving mechanism are vertical with speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis, 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 arranges 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 oil circuit control 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 control cover of driver, the speed-sensitive switch high-pressure oil feed pilot valve of speed-sensitive switch high-pressure oil feed pilot valve driving bearing inner ring and its driving is near the case side end contact and rotary support is provided; Two speed-sensitive switch oil extractions of speed-sensitive switch oil extraction-repairing driving mechanism-repairing pilot valve driving bearing control plunger is vertical with speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis, 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 arranges 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 oil circuit control of outside, control valve body is coaxial with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger, be installed on the control cover of driver, the speed-sensitive switch oil extraction of speed-sensitive switch oil extraction-repairing pilot valve driving bearing inner ring and its driving-repairing pilot valve is near the case side end contact and rotary support is provided;

As a kind of improvement, described change torque driving mechanism is to become torque controller by operation to make the translation of change torque drive bearing change switching time and the openings of sizes of pilot valve, the switch of control high-speed switch valve, and then the discharge capacity that changes oil hydraulic motor changes its output torque, the change torque controller is that machinery becomes any one in torque controller, single hydraulic fluid port change torque controller, two hydraulic fluid port change torque controller, four kinds of structures of dual control hydraulic pressure change torque controller, wherein:

Machinery becomes torque controller and comprises change torque adjustment bar, becomes the torque adjustment bar and is connected with change torque drive bearing rigidity;

Single hydraulic fluid port hydraulic pressure change torque controller comprises change moment of torsion plunger, becomes moment of torsion control port, and Returnning spring and spring seat become moment of torsion plunger one side and contact with becoming the torque drive bearing, and opposite side is communicated with the control port of change moment of torsion; Spring seat one side contacts with becoming the torque drive bearing, and opposite side contacts with Returnning spring; Spring chamber passes spring seat and is communicated with return opening with back pressure;

Two hydraulic fluid port single control hydraulic pressure become torque controller and comprise that 2 become the moment of torsion plunger, become moment of torsion control port, and Returnning spring and change moment of torsion control return opening become moment of torsion plunger one side and contact with becoming the torque drive bearing, and opposite side is communicated with the control port of change moment of torsion; Spring seat one side contacts with becoming the torque drive bearing, and opposite side contacts with Returnning spring; Spring chamber is communicated with change moment of torsion control return opening;

Dual control hydraulic pressure becomes torque controller and comprises that 2 become the moment of torsion plunger, and 2 become moment of torsion control port and 2 Returnning springs, becomes the moment of torsion plunger and becomes moment of torsion control port, and Returnning spring is corresponding one by one; Each side that becomes the moment of torsion plunger all contacts with becoming the torque drive bearing, and opposite side all contacts with corresponding Returnning spring; 2 spring chambers all are communicated with the control port of change moment of torsion.

As a kind of improvement, described change torque controller is divided into high-pressure oil feed and becomes torque controller and oil extraction-repairing change torque controller; High-pressure oil feed becomes torque controller and only controls speed-sensitive switch high-pressure oil feed pilot valve driving bearing, speed-sensitive switch high-pressure oil feed pilot valve driving bearing is only controlled speed-sensitive switch high-pressure oil feed pilot valve, and speed-sensitive switch high-pressure oil feed pilot valve is only controlled speed-sensitive switch high-pressure oil feed valve; Oil extraction-repairing becomes torque controller and only controls speed-sensitive switch oil extraction-repairing pilot valve driving bearing, 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 the suction oil independent regulation of oil distribution mechanism.

As a kind of improvement, described oil distribution casing group is comprised of oil distribution casing, high-pressure rotary supporting component, low pressure rotary support assembly and rear end cover, different from suction, oil extraction waist shaped hole symmetrical traditional oil distribution casing centered by 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 guide valve blocks high pressure oil runner on oil distribution casing and the guide valve blocks 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 valve blocks 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 rotary support assembly 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 rotary support assembly provide the rotary support between oil distribution casing and the rear end cover jointly.

As a kind of improvement, described speed-sensitive switch high-pressure oil feed pilot valve axis high-speed switch valve in the plane projection and speed-sensitive switch oil extraction-repairing pilot valve axis high-speed switch valve projection in the plane symmetrical take suction oil content boundary line as axis.

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 are symmetrical about suction oil content interface in the projection on plane, high-speed switch valve place, 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 to speed-sensitive switch high-pressure oil feed pilot valve, so that 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 less than the diameter of speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step, this area difference provides a pressure radially to speed-sensitive switch oil extraction-repairing pilot valve, so that all speed-sensitive switches oil extraction-repairing pilot valve 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 valve blocks; Plunger cavity separating valve body, main valve body, guide valve blocks are rigidly connected on the plunger case by pin, and oil distributing valve body and oil distribution casing group are connected by screw together; 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 valve blocks, guide valve blocks and oil distribution casing group, plunger cavity separating valve body and the plunger case.

As a kind of improvement, described speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step is controlled the width of step all with the undercut groove width is consistent accordingly on the guide valve blocks, so that pilot valve can respond the variation of plunger position fast with speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing.

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; When the displacement of described speed-sensitive switch oil extraction-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.

The present invention also provides a kind of switch method for changing torque of the rotating cylinder barrel plunger piston hydraulic slave motor for suction oil independent regulation, may further comprise the steps:

(1) according to the requirement to the output torque size, regulates the change torque controller; When the change torque controller is machinery change torque controller, regulate the position that it becomes the torque adjustment bar; Be single hydraulic fluid port hydraulic pressure when becoming torque controller, two hydraulic fluid port single control hydraulic pressure and becoming torque controller or dual control hydraulic pressure and become torque controller wherein any one hydraulic pressure becomes torque controller when becoming torque controller, regulate the pressure that it becomes moment of torsion control port; In order to change dutycycle switching time of each speed-sensitive switch high-pressure oil feed valve;

(2) opening time of control speed-sensitive switch high-pressure oil feed valve, so that be positioned at the plunger cavity in oil suction district, only when speed-sensitive switch high-pressure oil feed valve is opened, can from the oil suction of high pressure hydraulic fluid port, promote corresponding plunger acting; Be positioned at the plunger cavity in oil suction district when the speed-sensitive switch delivery valve is closed, 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 by the speed-sensitive switch oil extraction-Fill valve that communicates with return opening, do not hinder plunger motion; Be positioned at the plunger cavity in 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 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 adjusting 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:

Make plunger displacement dutycycle D=X _Open/ X _Max

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 1}Plunger displacement during for plunger oil suction stroke in the speed-sensitive switch high-pressure oil feed valve opening time section, d _{Open 2}The 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, during the oil hydraulic motor forward, XP＜0, oil hydraulic motor when counter-rotating, then XP＞0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing, during the oil hydraulic motor forward, XT=+Max, oil hydraulic motor when counter-rotating, then XT=-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, XP=0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing, during the oil hydraulic pump forward, XT＞0, oil hydraulic pump when counter-rotating, then XT＜0; YP＞0, YT＜0 are fixed bias.

In the method, initial position and postive direction definition:

1. get on the suction oil content boundary line, plunger is starting point when being in thick stick cylinder bosom, and start angle is 0 °;

2. over against output shaft, to get left-handedly for just, dextrorotation is for negative;

3. driving ring is to the right for just, left for negative;

4. guide's spool moves upward into just, downwards for negative;

5. pilot valve displacement intermediate value is 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. take the cylinder barrel center as initial point, the variable driving ring to the right, upwards for just, left, downwards for bearing.

By said structure and controlling method, during motor operating mode forward, XP＜0, XT=+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 less than negative speed-sensitive switch high-pressure oil feed pilot valve driving bearing and the fixed bias between the plunger case central axis (YP), speed-sensitive switch oil extraction-repairing pilot valve displacement is greater than the fixed bias (YT) 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, when the spring chamber of plunger cavity and speed-sensitive switch high-pressure oil feed valve is linked up, speed-sensitive switch high-pressure oil feed valve is opened under the pressure-acting of high pressure hydraulic fluid port, thereby the pressure of plunger cavity approaches but a little less than the pressure of high pressure hydraulic fluid port, plunger cavity is linked up with the spring chamber of oil extraction-Fill valve simultaneously, and oil extraction-Fill valve keeps closing under the pressure-acting of plunger cavity;

(2) state B, C: idle stroke state: wherein B is 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, the spring chamber of high pressure hydraulic fluid port and speed-sensitive switch high-pressure oil feed valve is linked up, the quick closedown under the pressure-acting 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 the spring chamber of oil extraction-Fill valve simultaneously, oil extraction-Fill valve is opened after below the return opening back pressure at the pressure decreased of plunger cavity, and wherein the process opened of speed-sensitive switch oil extraction-Fill valve is transition state B; Speed-sensitive switch oil extraction-Fill valve opens back-plunger from the return opening repairing until the interfacial process of arrival suction oil is repairing state C;

(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, the spring chamber of speed-sensitive switch high-pressure oil feed valve is communicated with the high-pressure oil feed mouth, and the high-pressure oil feed valve keeps cutting out; Link up with the return opening of back pressure and the spring chamber of oil extraction-Fill valve, during owing to the plunger oil extraction, plunger cavity pressure approaches and a little more than the recycle muzzle pressure with back pressure, carries out normal oil return so oil extraction-Fill valve stays open state under the pressure-acting of plunger cavity;

(4) state E, F: pump output state: wherein E is 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, the spring chamber of plunger cavity and oil extraction-Fill valve is linked up, oil extraction-Fill valve is closed under the pressure-acting 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 the spring chamber of high-pressure oil feed valve simultaneously, and speed-sensitive switch high-pressure oil feed valve is opened after more than the high pressure oil mouth pressure at the pressure rise of plunger cavity; Wherein state E is this transition state of high-pressure oil feed valve opening process, and state F is that plunger is by arranging the oil suction separating surface to the oil extraction of high pressure hydraulic fluid port until plunger forwards to.

The counter-rotating of motor operating mode and pump operating mode forward and backward also will experience six same states.

Compared with prior art, the invention has the beneficial effects as follows:

(1) become moment of torsion control: the present invention is by the real-time adjusting 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 that moment of torsion control had not both changed 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 by 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 simultaneously plunger at the oil suction stroke is inhaled at whole plunger, the displacement when speed-sensitive switch oil extraction-Fill valve is opened oil extraction when the oil extraction stroke of the dutycycle D1 in the oil extraction stroke and plunger is inhaled at whole plunger, when the dutycycle in the oil extraction stroke and D2, oil hydraulic motor has just entered the operating mode of pump reposefully, the i.e. 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 act on power on the swash plate 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 to there be sizable area to drive, have seriously limited the speed of response of oil hydraulic motor; And the present invention frees the variable driving mechanism from the huge unbalanced moment of swash plate, only need to 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 large, speed of response is slow, but also is easy to cause near zero point unstable; And the present invention only need reduce dutycycle D1 and D2 simultaneously, and 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 to switch sense of rotation, only need to can realize clockwise and anticlockwise according to description control pilot valve in the change torque operating procedure (4).

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is oil-distribution component structural representation among the present invention.

Fig. 3 is high speed switch high-pressure delivery valve of the present invention and pilot valve schematic representation thereof.

Fig. 4 is high speed switch oil extraction-Fill valve of the present invention and pilot valve schematic representation thereof.

Fig. 5 is oil distributing valve group and high and low pressure rotary support assembly and bonnet schematic representation among the present invention.

Fig. 6 is high speed switch high-pressure fuel feeding pilot valve of the present invention and its driving bearing place section.

Fig. 7 is high speed switch oil extraction of the present invention-repairing pilot valve and its driving bearing place section.

Fig. 8 is each main valve of oil-distribution component and its change torque driving bearing scheme of installation among the present invention.

Fig. 9 schematic representation that to be high speed switch high-pressure fuel feeding guide spool of the present invention install in the guide valve blocks.

Figure 10 schematic representation that to be high speed switch oil extraction of the present invention-repairing guide spool install in the guide valve blocks.

Figure 11 is the scheme of installation of pump body and oil-distribution component among the present invention.

Figure 12 is high speed switch high-pressure fuel feeding pilot valve driving bearing control unit scheme of installation of the present invention.

Figure 13 is high speed switch oil extraction of the present invention-repairing pilot valve driving bearing control unit scheme of installation.

Figure 14 is the corresponding relation figure of each each valve port step and hydraulic oil port above the guide valve blocks among the present invention.

Figure 15 is the corresponding relation figure of high speed switch high-pressure fuel feeding guide each valve port step of spool of the present invention and hydraulic oil port.

Figure 16 is the corresponding relation figure of high speed switch oil extraction of the present invention-each valve port step of repairing guide spool and hydraulic oil port.

Figure 17 is the motion flow control graph of each plunger position of the present invention and its related valves.

Figure 18 be among the present invention each pilot valve and driving bearing thereof at the position view of state A

Figure 19 is that each main valve of the present invention and its pilot valve are at the position view of state A.

Figure 20 is that each main valve of the present invention and its pilot valve are at the local location schematic representation of state A.

Figure 21 is that each main valve of the present invention and its pilot valve are at the local location schematic representation of state B.

Figure 22 is that each main valve of the present invention and its pilot valve are at the local location schematic representation of state C.

Figure 23 is that each main valve of the present invention and its pilot valve are at the local location schematic representation of state D.

Figure 24 is that each main valve of the present invention and its pilot valve are at the local location schematic representation of state E.

Figure 25 is that each main valve of the present invention and its pilot valve are at the local location schematic representation of state F.

Reference character is among the figure: 1 plunger case, 2 plunger cavity separating valve bodies, 3 main valve bodies, 4 guide valve blocks, 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 switch oil extraction-oil recharging valve cores, 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 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 valves are near the cavity volume between central side end face and its high-pressure oil feed control step, 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 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 is near the cavity volume between central side end face and its oil extraction-repairing control step, 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 valves are near cavity volume and oil distributing valve group high pressure oil runner connecting passage between central side end face and its high-pressure oil feed control step, 40 speed-sensitive switches oil extraction-repairing pilot valve is near cavity volume and oil distributing valve group high pressure oil runner connecting passage between central side end face and its oil extraction-repairing control step, 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 valves are 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 its high-pressure oil feed control step, 44 speed-sensitive switches oil extraction-repairing pilot valve 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 its oil extraction-repairing control step, 45 control cover of drivers, 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 rotary support assemblies, 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, 61 guide valve blocks high pressure oil runners, 62 guide valve blocks oil return runners, 63 end cap oil sealings, 64 end cap back-up rings, 65 end caps, 66 output shafts, 67 output shaft deep groove ball bearings, 68 output shaft double-row angular contact bal bearings, 69 bearing spacers, 70 end rings, 71 bulbs are secondary, 72 motor plungers, 73 center plunger copper sheathings, 74 pump cases, 75 transition block, 76 speed-sensitive switch high-pressure oil feed pilot valve driving bearing retaining rings, 77 speed-sensitive switches oil extraction-repairing pilot valve driving bearing retaining ring, 78 oil distribution casing group bearing supports, 79 bonnets extend, 80 oil distribution casing group deep groove ball bearings, 81 oil distribution casing group thrust ball bearings, 82 bearing pressure rings, 83 pump bodies, 84 oil-distribution components.

Embodiment

By reference to the accompanying drawings, the present invention is described in detail below by specific embodiment.

A kind of plunger piston hydraulic motor of mechanical-hydraulic leading in this specific embodiment is by a common rotating cylinder cartridge type quantitative plunger oil hydraulic motor repacking.

Remove 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 invention is installed to the 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 fuel tap independent regulation.

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, motor plunger 72 and plunger cavity 17, comprise that also oil distributing valve group, oil distribution casing group and switch become torque driving mechanism;

The oil distribution valve plunger by the same number of high-speed switching high voltage supply valve , high-speed switching drain - fill valve , high-speed switching high voltage supply pilot valve 8, the high-speed switching discharge of oil - fill oil pilot valve 9 and the public with oil the main valve 3 , each of the motor plungers 72 and its corresponding piston chamber 17 corresponds to a high-speed switching and high-pressure fuel valve corresponding speed switching high voltage supply pilot valve 8 , a high-speed switching discharge of oil - fill valve and the corresponding high-speed switching discharge of oil - fill oil pilot valve 9 ; each high-speed switching high voltage supply valve includes a high-speed switching high voltage supply valve sleeve 10 , a high-speed switching high voltage supply spool 11 , a high-speed switching high voltage supply valve spring 12 , a high-speed switching high voltage supply valve 20 and an axial port high speed switching valve circumferential oil supply port 21 , a high-speed switching valve spring pressure oil chamber 22 , each high-speed switching drain - fill valve includes a high-speed switching drain - fill valve sleeve 13 , a high-speed switching drain - fill oil spool 14 , a high-speed switching drain - fill valve spring 15 , a high-speed switching drain - make up valve axial port 28 and a high-speed switch drain - fill valve port 29 a circumferential speed switching discharge of oil - fill valve spring chamber 30 ; and each high-speed switching drain - fill valve are included each spool , spring , spring chamber , axial ports , peripheral ports ; each high-speed switching high voltage supply pilot valve 8 has a high-speed switching pressure pilot valve high pressure fuel supply control stage 25 , each high-speed switching drain - fill oil pilot valve 9 has a high-speed switching drain - fill oil pilot valve drain - fill oil control steps 33 ; at each speed switching high oil pilot valve housing side end face 23 near its high-speed switching high-pressure fuel supply pressure pilot valve control step 25 has a high-speed switching between the high pressure fuel pilot valve housing side near the high end and high-speed switching control of fuel oil pressure pilot valve cavity 24 between steps , high speed switching fuel oil pressure pilot valve 25 and the high-speed switch control level pilot valve close to the center of a high pressure supply side end face 27 have a high-speed switching between the high-pressure fuel supply control pilot valve pressure level and high-speed switching high voltage supply pilot valve close to the center side of the cavity 26 between the faces at each speed switching drain - fill oil pilot valve housing side near the end face 31 with its high-speed switching discharge of oil - fill oil pilot valve drain - fill oil between a control step 33 high-speed switching drain - fill oil pilot valve housing side near the drain end and high-speed switching - fill oil pilot valve drain - step up the oil control cavity 32 between the high-speed switch drain - fill oil pilot valve drain - 33 steps up the oil and high-speed switch control exhaust oil - fill oil pilot valve close to the center of each side end face 35 a high-speed switching between the drain - fill oil pilot valve drain - up the oil level and high-speed switch control exhaust oil - fill oil pilot near the center of the valve cavity between the side face 34 ; each plunger high pressure fuel corresponding speed switching and high-speed switching valve drain - fill valve are arranged side by side , the axial ports are their corresponding piston chamber 17 connectivity ; each speed switching high voltage supply valve port 21 in the circumferential direction , both through the high-speed switching high-voltage high-pressure fuel supply control pilot valve to its high-speed switching high voltage supply level pilot valve near the central cavity between the side face 26 , with the group with the oil pan 18 high-pressure oil passage communicating ; each high-speed switching drain - fill valve port 29 in the circumferential direction , both through the high-speed switching discharge of oil - fill oil pilot valve drain - fill oil its high-speed switching control step drain - up the oil side of the pilot valve near the center of the cavity 34 between the end faces , and with the oil pan oil return passage 19 communicating ; each high-speed switching high voltage supply valve spring chamber 22 were associated with the corresponding pilot valve on the high-speed switching pressure pilot valve high pressure fuel supply control stage 25 connected , each high-speed switching drain - fill valve spring chamber 30 were associated with the corresponding high-speed switch on the pilot valve drain - fill oil pilot drain valve - fill oil control step 33 connectivity ; each high-speed switching high voltage supply pilot valve 8 and high-speed switching drain - fill oil pilot valve 9, two end ( near the housing side near the center of the side face and the face ) were associated with drain port of the communication , each high-speed switching pressure fuel supply pressure control pilot valve stage and high-speed switching pressure supply side of the pilot valve near the center of the cavity between the end faces 26 are set with the oil pan with high pressure oil flow channel 18 connectivity ; each high-speed switching drain - fill oil pilot valve drain - up the oil level and high-speed switch control exhaust oil - up the oil side of the face near the center of the pilot valve cavity 34 between the average and the oil pan with oil return passage connectivity ; each high-speed switching high voltage supply pilot valve housing side near the high end with its high-speed switching of fuel oil pressure pilot valve control cavity 24 between steps were with the corresponding piston chamber 17 is connected to each of the high-speed switching discharge of oil - fill oil pilot valve close to the housing side end their high-speed switching drain - fill oil pilot valve drain - step up the oil control between the cavity 32 are related to the corresponding piston chamber 17 is connected ; All high-speed switch for high pressure oil pilot valve 8 is located in the same section , all the high-speed switching drain - fill oil pilot valve 9 is located on the same section ;

Described oil distribution casing group and describedly join the end contact that oily guide valve blocks 4 is positioned at the plunger opposite side, without relative movement, 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 shares, and 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 respectively high-pressure rotary supporting component 54 and low pressure rotary support assembly 55 that rotary support is provided between the annular oil distribution casing oil return runner 19 in the high pressure oil runner outside, center and the leakage oil runner near case side, relatively rotate between oil distribution casing group and the housing rear end cover 56.

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 form, 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 speed-sensitive switch oil extractions corresponding with spring-repairing pilot valve driving bearing control piston spring chamber 60 forms; Two speed-sensitive switch high-pressure oil feed pilot valve driving bearing control plungers 47 of speed-sensitive switch high-pressure oil feed driving mechanism are with vertical in speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 axis, 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 arranges 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 oil circuit control 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 control cover of driver 45, the close case side end face 23 of 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 contacts and provides rotary support; Two speed-sensitive switch oil extractions of speed-sensitive switch oil extraction-repairing driving mechanism-repairing pilot valve driving bearing control plunger 51 is with vertical in speed-sensitive switch oil extraction-repairing high-pressure oil feed pilot valve driving bearing 7 axis, 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 arranges 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 oil circuit control 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 control cover of driver 45, the close case side end face 31 of the speed-sensitive switch oil extraction on the speed-sensitive switch oil extraction of speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 inner rings and its driving-repairing pilot valve 9-repairing pilot valve contacts and provides rotary support; 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 separately independent regulation.

The oil distribution casing group is comprised of oil distribution casing 5, high-pressure rotary supporting component 54, low pressure rotary support assembly 55 and rear end cover 56, different from suction, oil extraction waist shaped hole symmetrical traditional oil distribution casing centered by 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 the guide valve blocks on oil distribution casing 5 and guide valve blocks 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 the guide valve blocks, 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 rotary support assembly 55 provides the sealing between oil distribution casing oil return runner 19 and the oily runner of leakage, and high-pressure rotary supporting component 54 and low pressure rotary support 55 assemblies provide the rotary support between oil distribution casing 5 assemblies and rear end cover 56 housings jointly.

Speed-sensitive switch high-pressure oil feed pilot valve 8 axis high-speed switch valve in the plane projection and speed-sensitive switch oil extraction-repairing pilot valve 9 axis high-speed switch valve projection in the plane symmetrical take suction oil content boundary line as axis.

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, this direction and speed-sensitive switch high-pressure oil feed pilot valve driving bearing 7 fixed bias directions are symmetrical about suction oil content interface in the projection on plane, high-speed switch valve place, and 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.

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 to speed-sensitive switch high-pressure oil feed pilot valve 8, so that 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 less 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 to speed-sensitive switch oil extraction-repairing pilot valve 9, so that all speed-sensitive switches oil extraction-repairing pilot valve 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 valve blocks 4; Plunger cavity separating valve body 2, main valve body 3, guide valve blocks 4 are rigidly connected on the plunger case 1 by pin, and oil distributing valve body and oil distribution casing group are connected by screw together; 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 valve blocks 4, guide valve blocks 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 is all with the undercut groove width is consistent accordingly on the guide valve blocks, so that pilot valve can respond the variation of plunger position fast.

When the displacement of described speed-sensitive switch high-pressure oil feed pilot valve control driving bearing 6 and speed-sensitive switch oil extraction-repairing pilot valve control 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 control 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; When 7 displacements of described speed-sensitive switch oil extraction-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 starting point when being in plunger thick stick cylinder 1 bosom, and start angle is 0 °;

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;

7. take plunger case 1 center as initial point, variable driving bearing hoop is right, upwards for just, left, downwards for bearing;

This switch method for changing torque may further comprise the steps:

(1) according to the requirement to the output torque size, regulate the control-oil pressure in speed-sensitive switch high-pressure oil feed pilot valve driving bearing control piston spring chamber 59 and speed-sensitive switch oil extraction-repairing pilot valve driving bearing control piston spring chamber 60, perhaps become the position that torque controller changes speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6 and speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 by other, and then change the working position of speed-sensitive switch high-pressure oil feed pilot valve and speed-sensitive switch oil extraction-repairing pilot valve, reach change each speed-sensitive switch high-pressure oil feed valve switching time dutycycle purpose;

(2) opening time of control speed-sensitive switch high-pressure oil feed valve, so that be positioned at the plunger cavity 17 in oil suction district, only when speed-sensitive switch high-pressure oil feed valve is opened, can from 57 oil suctions of high pressure hydraulic fluid port, promote corresponding plunger acting; Be positioned at the plunger cavity 17 in oil suction district when the speed-sensitive switch delivery valve is closed, 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 by the speed-sensitive switch oil extraction-Fill valve that communicates with return opening 17, do not hinder plunger motion; Be positioned at the plunger cavity 17 in 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 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;

Make plunger displacement dutycycle D=X _Open/ X _Max

T=[D ₁-(1-D ₂)] * (D _m* P * η _Machine* η _Valve)

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 plunger 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 plunger when speed-sensitive switch oil extraction-Fill valve is opened oil extraction when the oil extraction stroke displacement of plunger inhale at whole plunger, sky ratio in the oil extraction stroke, d _{Open 1}Plunger displacement during for plunger oil suction stroke in the speed-sensitive switch high-pressure oil feed valve opening time section, d _{Open 2}The 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 57, 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 6 and the fixed bias displacement between plunger case 1 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 6, Y _TBe the inwall center of speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7 and the fixed bias displacement between plunger case 1 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 7;

When (4) being in the motor operating mode, for speed-sensitive switch high-pressure oil feed pilot valve driving bearing 6, during the oil hydraulic motor forward, X _P＜0, oil hydraulic motor when counter-rotating, then X _P＞0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7, during the oil hydraulic motor forward, 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 6, during the oil hydraulic pump clockwise and anticlockwise, X _P=0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing 7, during the oil hydraulic pump forward, 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 invention, a kind of rotating cylinder barrel plunger piston hydraulic slave motor that has adopted the machine solution guide switch changing torque oil-distribution component of suction provided by the invention, draining valve independent regulation specifically has been discussed herein, be described in detail as follows:

Remove 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 invention is installed to the 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 during this oil hydraulic motor forward is shown in accompanying drawing 17～25.Each plunger whenever turns around, and has all experienced 6 states (4 major states and 2 transition states):

(1) state A: high drive state: during forward, 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-acting of high pressure hydraulic fluid port 57, thereby the pressure of plunger cavity 17 approaches 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-acting of plunger cavity 17;

(2) state B, C: idle stroke state: wherein B is 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-acting 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 below return opening 58 back pressures at the pressure decreased of plunger cavity 17, and wherein the process opened of speed-sensitive switch oil extraction-Fill valve is transition state B; Speed-sensitive switch oil extraction-Fill valve opens back-plunger from the return opening repairing until the interfacial process of arrival suction oil is repairing state C;

(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; Return opening 58 with 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 approach and a little more than return opening 58 pressure with back pressure, carry out normal oil return so speed-sensitive switch oil extraction-Fill valve stays open state under the pressure-acting of plunger cavity 17;

(4) state E, F: pump output state: wherein E is 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-acting 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 more than high pressure hydraulic fluid port 57 pressure at the pressure rise of plunger cavity 17; Wherein state E is this transition state of speed-sensitive switch high-pressure oil feed valve opening process, and state F is that plunger is by arranging the oil suction separating surface to 57 oil extractions of high pressure hydraulic fluid port until plunger forwards to.

At last, it should be noted that above what enumerate only is specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, a lot of distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate all should be thought protection scope of the present invention.

Claims

1. the rotating cylinder barrel plunger piston hydraulic slave motor of suction oil independent regulation comprises moment of torsion output mechanism, quantitative swash plate, plunger case, plunger and plunger cavity; It is characterized in that, also comprise the change torque driving mechanism of oil distributing valve group, oil distribution casing group and suction oil independent regulation;

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 formation, each plunger and the corresponding speed-sensitive switch high-pressure oil feed valve of corresponding plunger cavity thereof reach corresponding with it speed-sensitive switch high-pressure oil feed pilot valve, a speed-sensitive switch oil extraction-Fill valve reaches 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-oil recharging valve core, 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, 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 have a cavity volume near central side end face among, 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 had a cavity volume near central side end face among; Speed-sensitive switch high-pressure oil feed valve and speed-sensitive switch oil extraction-Fill valve that each plunger is corresponding are arranged side by side, speed-sensitive switch high-pressure oil feed valve shaft to hydraulic fluid port and the axial hydraulic fluid port of speed-sensitive switch oil extraction-Fill valve all the plunger cavity corresponding with it be communicated with; 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 be communicated with the leakage hydraulic fluid port; 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 near case side end face and speed-sensitive switch high-pressure oil feed pilot valve high pressure altogether the cavity volume between the fuel feeding control step all the plunger cavity corresponding with corresponding speed-sensitive switch high-pressure oil feed pilot valve link to each other, 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; Speed-sensitive switch oil extraction on the annular oil distribution casing oil return runner in the oil distribution casing high pressure oil runner of the oil distribution casing group switching centre outside and described all speed-sensitive switch oil extraction-repairing pilot valves-repairing pilot valve oil extraction-repairing control step is communicated with cavity volume between the close central side end face of 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 shares, and 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 respectively high-pressure rotary supporting component and low pressure rotary support assembly that rotary support is provided between annular oil distribution casing oil return runner and the leakage oil runner near case side, relatively rotate between oil distribution casing group and the rear end cover;

2. the rotating cylinder barrel plunger piston hydraulic slave motor of suction according to claim 1 oil independent regulation, it is characterized in that, described speed-sensitive switch high-pressure oil feed pilot valve axis high-speed switch valve in the plane projection and speed-sensitive switch oil extraction-repairing pilot valve axis high-speed switch valve projection in the plane symmetrical take suction oil content boundary line as axis.

3. the rotating cylinder barrel plunger piston hydraulic slave motor of suction according to claim 1 oil independent regulation, it is characterized in that, the change torque driving mechanism of described suction oil independent regulation 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 speed-sensitive switch high-pressure oil feed pilot valve driving bearing control spring form, 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 speed-sensitive switch oil extractions corresponding with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control spring-repairing pilot valve driving bearing control spring chamber forms; Two control plungers of high-pressure oil feed driving mechanism are vertical with speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis, 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 arranges 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 oil circuit control 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 control cover of driver, the speed-sensitive switch high-pressure oil feed pilot valve of speed-sensitive switch high-pressure oil feed pilot valve driving bearing inner ring and its driving is near the case side end contact and rotary support is provided; Two speed-sensitive switch oil extractions of speed-sensitive switch oil extraction-repairing driving mechanism-repairing pilot valve driving bearing control plunger is vertical with speed-sensitive switch high-pressure oil feed pilot valve driving bearing axis, 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 arranges 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 oil circuit control of outside, control valve body is coaxial with speed-sensitive switch oil extraction-repairing pilot valve driving bearing control plunger, be installed on the control cover of driver, the speed-sensitive switch oil extraction of speed-sensitive switch oil extraction-repairing pilot valve driving bearing inner ring and its driving-repairing pilot valve is near the case side end contact and rotary support is provided.

4. the rotating cylinder barrel plunger piston hydraulic slave motor of suction according to claim 3 oil independent regulation, it is characterized in that, described change torque driving mechanism is to become switching time and the openings of sizes that the translation of torque drive bearing changes pilot valve by operation, the switch of control high-speed switch valve, and then the discharge capacity that changes oil hydraulic motor changes its output torque, the change torque controller is that machinery becomes any one in torque controller, single hydraulic fluid port change torque controller, two hydraulic fluid port change torque controller, four kinds of structures of dual control hydraulic pressure change torque controller, wherein:

5. the rotating cylinder barrel plunger piston hydraulic slave motor of suction oil independent regulation according to claim 4 is characterized in that, described change torque controller is divided into high-pressure oil feed and becomes torque controller and oil extraction-repairing change torque controller; High-pressure oil feed becomes torque controller and only controls speed-sensitive switch high-pressure oil feed pilot valve driving bearing, speed-sensitive switch high-pressure oil feed pilot valve driving bearing is only controlled speed-sensitive switch high-pressure oil feed pilot valve, and speed-sensitive switch high-pressure oil feed pilot valve is only controlled speed-sensitive switch high-pressure oil feed valve; Oil extraction-repairing becomes torque controller and only controls speed-sensitive switch oil extraction-repairing pilot valve driving bearing, 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 the suction oil independent regulation of oil distribution mechanism.

6. the rotating cylinder barrel plunger piston hydraulic slave motor of suction according to claim 4 oil independent regulation, 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 are symmetrical about suction oil content interface in the projection on plane, high-speed switch valve place, 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.

7. the rotating cylinder barrel plunger piston hydraulic slave motor of suction according to claim 4 oil independent regulation, 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 to speed-sensitive switch high-pressure oil feed pilot valve, so that 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 less than the diameter of speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing control step, this area difference provides a pressure radially to speed-sensitive switch oil extraction-repairing pilot valve, so that all speed-sensitive switches oil extraction-repairing pilot valve can both be pressed on described speed-sensitive switch oil extraction-repairing pilot valve driving bearing.

8. the rotating cylinder barrel plunger piston hydraulic slave motor of suction according to claim 4 oil independent regulation, 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.

9. the rotating cylinder barrel plunger piston hydraulic slave motor of suction according to claim 4 oil independent regulation, it is characterized in that, 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; When the displacement of described speed-sensitive switch oil extraction-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.

10. the rotating cylinder barrel plunger piston hydraulic slave motor 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 valve blocks; Plunger cavity separating valve body, main valve body, guide valve blocks are rigidly connected on the plunger case by pin, and oil distributing valve body and oil distribution casing group are connected by screw together; 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 valve blocks, guide valve blocks and oil distribution casing group, plunger cavity separating valve body and the plunger case.

11. the rotating cylinder barrel plunger piston hydraulic slave motor of suction oil independent regulation according to claim 10, it is characterized in that, described oil distribution casing group is by oil distribution casing, the high-pressure rotary supporting component, low pressure rotary support assembly and rear end cover form, with suction, oil extraction waist shaped hole symmetrical traditional oil distribution casing centered by suction oil content interface is different, 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 guide valve blocks high pressure oil runner on oil distribution casing and the guide valve blocks 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 valve blocks 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 rotary support assembly 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 rotary support assembly provide the rotary support between oil distribution casing and the rear end cover jointly.

12. the rotating cylinder barrel plunger piston hydraulic slave motor of suction oil independent regulation according to claim 10, it is characterized in that, described speed-sensitive switch high-pressure oil feed pilot valve high-pressure oil feed control step is controlled the width of step all with the undercut groove width is consistent accordingly on the guide valve blocks, so that pilot valve can respond the variation of plunger position fast with speed-sensitive switch oil extraction-repairing pilot valve oil extraction-repairing.

13. the method for changing torque based on the rotating cylinder barrel plunger piston hydraulic slave motor of the oil of the suction described in the claim 1 independent regulation may further comprise the steps:

Make plunger displacement dutycycle D=X _Open/ X _Max

T=[D ₁-(1-D ₂)] * (D _m* P * η _Machine* η _Valve)

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

When (4) being in the motor operating mode, for speed-sensitive switch high-pressure oil feed pilot valve driving bearing, during the oil hydraulic motor forward, X _P＜0, oil hydraulic motor when counter-rotating, then X _P＞0; For speed-sensitive switch oil extraction-repairing pilot valve driving bearing, during the oil hydraulic motor forward, 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, during the oil hydraulic pump forward, X _T＞0, oil hydraulic pump when counter-rotating, then X _T＜0; Y _P＞0, Y _T＜0 is fixed bias.