CN103671101A - Hydraulic mechanical control mechanism - Google Patents
Hydraulic mechanical control mechanism Download PDFInfo
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- CN103671101A CN103671101A CN201310586216.6A CN201310586216A CN103671101A CN 103671101 A CN103671101 A CN 103671101A CN 201310586216 A CN201310586216 A CN 201310586216A CN 103671101 A CN103671101 A CN 103671101A
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Abstract
The invention discloses a hydraulic mechanical control mechanism which comprises an inflow cavity, an outflow cavity, a rotor provided with a plurality of radial grooves, blades sliding along the radial grooves and a stator arranged outside the rotor, wherein at least one ascending section and descending section are arranged on the stator in the circumferential direction; a fluid working cavity is formed between each of two adjacent blades and external surface of the stator as well as the inner surface of the stator and side plates; a blade lower cavity is formed between the lower ends of the blades and the bottoms of the radial grooves; one of the inflow cavity and the outflow cavity is a high-pressure cavity, and the other is a low-pressure cavity; ladder-shaped holes are formed in the bottoms of all radial grooves of the rotor; a ladder-shaped pin is arranged in each ladder-shaped hole in a sliding manner; the small ends of the ladder-shaped pins penetrate through the blade lower cavity and face to the lower ends of the blades; a ladder-shaped cavities is formed between the outer circumferential surface of the small end of each ladder-shaped pin and the inner hole wall of the large hole of the corresponding ladder-shaped hole; a control cavity is formed between the lower end face of the large cylinder of each ladder-shaped pin and the bottom of the corresponding ladder-shaped hole. The hydraulic mechanical control mechanism disclosed by the invention is efficient and reliable in operation, relatively low in no-load power consumption, convenient to dismount and maintain, and good in manufacturing process.
Description
Technical field
The present invention relates to hydraulic machinery technical field, particularly relate to hydraulic vane motor and pump, especially relate to a kind of positive displacement hydraulic machinery control mechanism.
Background technique
Existing hydraulic vane motor has adopted spring structure to make blade be close to stator startup work, the inherent defect that it exists this structure to bring, spring failure causes functional reliability poor, while also causing zero load due to the effect of pressing force of the spring, produce unnecessary power loss, pressing force of the spring also causes product mounting or dismounting inconvenience.
Chinese patent literature (open day: on February 20th, 2013, publication number: CN202746199U) disclose a kind of hydraulic control, vane pump comprises housing, stator and rotor, rotor is located in stator rotationally, in rotor, be radially provided with some blade grooves, in blade groove, be provided with slidably blade, blade can partly reach rotor radial outside or be retracted in rotor; Between rotor and stator, form cavity, this cavity has fluid suction area, fluid compression district and blade retraction district, is provided with the chamber communicating with described cavity in housing, and chamber is by influent stream mouth and go out head piece and communicate with the external world.Structure comprises links up chamber and extraneous runner, and hydraulic control is stably retracted in rotor blade toward passing into pressure fluid in chamber by runner selectively.For vane pump Leaf is controlled epitrochanterian radially sliding, solved existing common vane pump when not needing work, blade still can reach the outside of rotor, and makes the large problem of energy consumption of this vane pump.
Chinese patent literature (open day: on December 26th, 2012, publication number: CN102840134A) disclose a kind of blade hydraulic control, blade pump structure comprises housing, stator and rotor, rotor is located in stator rotationally, in rotor, be radially provided with some blade grooves, in blade groove, be provided with slidably blade, blade can partly reach rotor radial outside or be retracted in rotor; Between rotor and stator, form cavity, this cavity has fluid suction area, fluid compression district and blade retraction district, in housing, be provided with the chamber communicating with described cavity, chamber is by influent stream mouth and go out head piece and communicate with the external world, while needing rotor idle running, by pass into pressure fluid in chamber, blade is stably retracted within rotor.
Technique scheme has solved existing common vane pump when not needing work, and blade still can reach the outside of rotor, and makes the large problem of energy consumption of this vane pump.
Chinese patent literature (open day: on August 18th, 2010, publication number: CN201554844U) disclose a kind of transmission controlling mechanism, it comprises pump, described pump has imbibition passage, apocenosis passage, makes the workpiece of relative movement, between the workpiece of relative movement, form swept volume, the relative movement of workpiece causes swept volume periodically to increase and dwindles and sucked liquid and discharged liquid by apocenosis passage by imbibition passage, and by the extruding of workpiece, makes to discharge the pressure energy increase of liquid; Part workpiece is used for being connected to input block, and another part workpiece is used for being connected to output block, and it also comprises and is arranged on imbibition passage or/and the flow control device on apocenosis passage.
Technique scheme has solved pump and has realized the problem that transferring power size is switched and changed to transmission of power break-make.
Chinese patent literature (open day: on May 22nd, 2013, publication number: CN103114993A) disclose a kind of step blades formula hydraulic machinery, comprise axle, front case, rear case, be arranged on the stator of front case and rear case inside, rotor, blade, oil-feed oil distribution casing and fuel-displaced oil distribution casing, on described rotor, be evenly equipped with a plurality of rotor, described blade is movably arranged in rotor, the thickness of root of blade is greater than the thickness of vane tip, between blade and the bottom of rotor, form bottom chamber, between blade and the cell wall of rotor, form control chamber, on described oil-feed oil distribution casing and fuel-displaced oil distribution casing, corresponding to control chamber position, be respectively arranged with kidney slot.
Technique scheme provides a kind of step blades formula hydraulic machinery, this hydraulic machinery, and the isostasy of blade to stator inner surface, stable working, weares and teares little, and can realize idle running, avoids the reactive loss after off-load, and energy loss is few.
Summary of the invention
The object of the invention is in order to solve the intrinsic defect that in prior art, hydraulic machinery adopts spring structure to exist, provide a kind of and can guarantee motor or pump work high efficient and reliable, can realize higher working pressure, the unnecessary power consumption that while avoiding zero load, impacting force causes, product is installed and removed hydraulic machinery control mechanism easy to maintenance.
The present invention realizes the technological scheme that its technical purpose adopts: a kind of hydraulic machinery control mechanism, comprise the He Chuliu chamber, influent stream chamber that is communicated with external fluid, be provided with the rotor of some radial grooves, be equipped with radial groove and some blades that radially groove slides, be located at the stator of rotor exterior, be arranged on the side plate of rotor both sides, stator is upwards being provided with at least one rising section and at least one decline section its week, adjacent two blades and rotor outer surface, between stator inner surface and side plate, form fluid operating chamber, blade lower end and rotor radial groove bottom form blade cavity of resorption, described He Chuliu chamber, influent stream chamber is respectively hyperbaric chamber or low-pressure cavity, every radial groove bottom of described rotor offers respectively shoulder hole, the inner slip of described shoulder hole is provided with stepped shaft pin, the small end of stepped shaft pin passes blade cavity of resorption towards blade lower end, between the outer peripheral surface of stepped shaft pin small end and the inner hole wall of shoulder hole macropore, form stepped cavity, formation control chamber between the big column lower end surface of stepped shaft pin and shoulder hole bottom.This hydraulic machinery control mechanism, by shoulder hole being set at rotor radial groove bottom, and inner slip of shoulder hole, stepped shaft pin is set, stepped cavity and control chamber in whole hydraulic-mechanic system, have been increased, when this hydraulic machinery control structure is applied in motor, by the area of appropriate design stepped shaft pin, control stepped cavity, the pressure difference of control chamber and fluid operating chamber internal fluid pressure, make blade there is effective breakout pressure to stator, and overall process forms good contact, guarantee motor operations high efficient and reliable, thereby can realize higher working pressure, the unnecessary power consumption that while also having avoided unloaded, impacting force causes.When this hydraulic machinery control structure is applied to hydraulic vane pump, by designing the area of suitable stepped shaft pin, when making pump at influent stream section or going out to flow section, blade all has the contact of reasonably stability to stator, thereby effectively improve the service behaviour of pump, and when compared with the slow-speed of revolution, still can guarantee the good contact of blade and stator, improve tick-over reliability.And these hydraulic machinery control structure mounting or dismounting are easy to maintenance, and manufacturing process is good, features simple structure is easy to realize.
As preferably, described shoulder hole is arranged on rotor radial fluted shaft to neutral position and the center line of shoulder hole is parallel to radially cell wall of rotor radial groove, described shoulder hole is split-type structural, described shoulder hole consists of the small cylindrical opening that is arranged on the big column hole of rotor radial groove bottom and coordinate big column hole to be arranged on the lining of inside, big column hole, and described big column hole and small cylindrical opening coaxially arrange.Shoulder hole is arranged on rotor radial fluted shaft to neutral position and the center line of shoulder hole is parallel to radially cell wall of rotor radial groove, such structure is that stepped shaft pin in order to guarantee shoulder hole inside is under hydrodynamic pressure is controlled, blade is produced to reliable and stable power, avoid blade to produce the problem of new unbalance stress, from the neutral position of blade bottom, blade is formed to the effect of area difference hydrodynamic pressure, can guarantee that blade and stator inner surface carry out rationally contacting reliably, guarantee the normal stable operation of hydraulic machinery.Shoulder hole adopts split-type structural to facilitate processing and fabricating.Shoulder hole can adopt different structural type, when internal rotor does not arrange inner ring, can directly in rotor radial groove bottom neutral position, offer a big column hole, and a lining is set in the hole near blade lower end in big column hole, center at lining arranges the small cylindrical opening coaxial with big column hole corresponding to big column hole, such structure had both facilitated the setting of shoulder hole, also facilitated the installation of stepped shaft pin, be more conducive to the formation of control chamber and stepped cavity.
Preferred as another kind, described shoulder hole is arranged on rotor radial fluted shaft to neutral position and the center line of shoulder hole is parallel to radially cell wall of rotor radial groove, described shoulder hole is split-type structural, described shoulder hole consists of the big column hole that is arranged on the small cylindrical opening of rotor radial groove bottom and be arranged on the inner ring of rotor inner side, on described inner ring, along circumference, be provided with and every big column hole that radial groove is corresponding, the small cylindrical opening correspondence of big column hole and rotor radial groove bottom communicates.When rotor inner side arranges inner ring, shoulder hole can consist of the big column hole that is arranged on the small cylindrical opening of rotor radial groove bottom and be arranged on inner ring respectively, small cylindrical opening corresponding to every rotor radial groove bottom on inner ring is respectively arranged with coaxial big column hole, such structure makes the small end of stepped shaft pin be arranged on small cylindrical opening inside and blade cavity of resorption is passed towards blade lower end in upper end, it is inner that the large end of stepped shaft pin is arranged on big column hole, such structure fabrication is convenient, and mounting or dismounting are safeguarded easily.
As preferably, stepped shaft pin is split-type structural or integral structure, and the stepped shaft pin of split-type structural comprises great circle pin and roundlet pin, the movable upper-end surface that arranges or be connected to great circle pin of roundlet pin; The stepped shaft pin of integral structure is the cylindrical structure that upper end cylinder is less than lower end cylinder, and the axle section of the stepped shaft pin of integral structure is T character form structure.Stepped shaft pin can adopt split-type structural and integral structure, arranging of stepped shaft pin is mainly in order to control rational stress surface product moment, the structural type of stepped shaft pin can adopt different structure, as long as can meet the designing requirement of hydraulic machinery control structure to pin area difference, guarantee that blade has the contact of reasonably stability to stator inner surface, thereby effectively improve the service behaviour of hydraulic machinery, and improve the reliability of tick-over, also can adopt other structural types.The stepped shaft pin of split-type structural has adopted two straight pins that diameter is different, roundlet pin is arranged on the upper-end surface of great circle pin, control the diameter of big or small straight pin, thereby control the pressure fluid of the control chamber of great circle pin lower end and the stepped cavity inside of roundlet pin and big column pin joint synapsis, thereby make roundlet pin upper end to the stable pressure on top surface of the generation of blade lower end, and then make to produce between blade upper end and stator inner surface stable contact, make blade be close to stator inner surface, guarantee stable startup and the normal work of hydraulic machinery.The stepped shaft pin of split-type structural is made, mounting or dismounting are convenient.The stepped shaft pin integral manufacturing coaxality of integral structure is high, and precision is high, easy to use.Roundlet pin upper-end surface or stepped shaft pin small end face and blade lower end are because working state is different, its contact condition is also different, stepped shaft pin moves upward and presses with top, blade lower end under the effect of internal fluid pressure, blade is outwards ejected, or ladder pin is retracted into shoulder hole inside and then it is inner to make blades retracted arrive rotor radial groove.
As preferably, stepped cavity communicates with the low-pressure cavity in He Chuliu chamber, influent stream chamber through runner, and described control chamber communicates with the hyperbaric chamber in He Chuliu chamber, influent stream chamber through runner, and described blade cavity of resorption communicates with fluid operating of living in chamber, this blade upper end through runner.Stepped cavity communicates with the low-pressure cavity in He Chuliu chamber, influent stream chamber through runner, and its runner is arranged on rotor and side plate; Control chamber communicates with the hyperbaric chamber in He Chuliu chamber, influent stream chamber through runner, and its runner is also arranged on rotor and side plate; Blade cavity of resorption communicates with fluid operating of living in chamber, this blade upper end through runner, and its runner is arranged on blade or rotor.Control the pressure difference of stepped cavity, control chamber and fluid operating chamber internal fluid pressure, realize the control to this hydraulic machinery, guarantee that efficient work is reliable, can realize higher working pressure, unnecessary power consumption while avoiding zero load.
Preferred as the second, this hydraulic machinery control mechanism also can arrange the low-pressure channel that is communicated with external fluid, stepped cavity communicates with described low-pressure channel through runner, described control chamber communicates with the hyperbaric chamber in He Chuliu chamber, influent stream chamber through runner, and described blade cavity of resorption communicates with fluid operating of living in chamber, this blade upper end through runner.Stepped cavity communicates with described low-pressure channel through runner, and its runner is arranged on rotor and side plate; Control chamber communicates with the hyperbaric chamber in He Chuliu chamber, influent stream chamber through runner, and its runner is also arranged on rotor and side plate; Blade cavity of resorption communicates with fluid operating of living in chamber, this blade upper end through runner, and its runner is arranged on blade or rotor.Control the pressure difference of stepped cavity, control chamber and fluid operating chamber internal fluid pressure, realize the control to this hydraulic machinery, guarantee that efficient work is reliable, can realize higher working pressure, unnecessary power consumption while avoiding zero load.Described low-pressure channel does not communicate with hyperbaric chamber or low-pressure cavity, can be used for pump or motor, and while making motor, pressure fluid enters motor, and stepped cavity is low pressure, and blade is adjacent to stator inner surface and realizes motor and reliably start under ladder pin area difference pressure-acting.
Preferred as the third, this hydraulic machinery control mechanism also can arrange external pressure fluid, described external pressure fluid can be from the little pump of coaxial connection or other pressure fluid of hydraulic system, stepped cavity communicates with the low-pressure cavity in external pressure fluid and Chu Liu chamber, influent stream chamber respectively through two-position three way control valve, and control chamber communicates with the hyperbaric chamber in He Chuliu chamber, influent stream chamber through fluid passage; Or stepped cavity and control chamber communicate with low-pressure cavity and external pressure fluid in Chu Liu chamber, influent stream chamber respectively through two-position four-way control valve, blade cavity of resorption communicates with fluid operating of living in chamber, blade upper end through runner.System when zero load or off-load with two position three-way valve, or the effect with two-position four-way control valve switching controls by external pressure fluid makes in blade retraction groove, stop Fluid Circulation to reduce energy consumption, when external pressure fluid stops disconnected or logical control chamber, blade stretches out, and Fluid Circulation recovers normal work.The unloaded stage is pinned blade makes it not stretch out rotor, thereby does not produce Fluid Circulation, has avoided no-load power consumption.Principle is: during system unloaded, stepped cavity passes into the external pressure fluid of external certain pressure through control valve, control chamber is logical low pressure, thereby stepped shaft pin moves inwards, the small end of stepped shaft pin is connected with blade lower end, also makes in blade retraction rotor inwards.External pressure fluid can be from little pump or other pressure fluid of hydraulic system of coaxial connection.
As the 4th kind preferably, this hydraulic machinery control mechanism also can arrange low-pressure channel and the external pressure fluid that is communicated with external fluid, described external pressure fluid can be from the little pump of coaxial connection or other pressure fluids of hydraulic system, stepped cavity communicates with external pressure fluid and described low-pressure channel respectively through two-position three way control valve, and control chamber communicates with the hyperbaric chamber in He Chuliu chamber, influent stream chamber through fluid passage; Or stepped cavity and control chamber communicate with external pressure fluid and described low-pressure channel respectively through two-position four-way control valve, blade cavity of resorption communicates with fluid operating of living in chamber, blade upper end through fluid passage.By two-position three way control valve or two-position four-way control valve switching controls, reliable operation is sensitive.When zero load or off-load, the effect of external pressure fluid makes in blade retraction groove, stop Fluid Circulation, switching control valve is through external pressure fluid effect or disconnected external pressure fluid and through centrifugal action, blade is shot out to recover normal work only, hyperbaric chamber is communicated with control chamber through external pressure fluids of connection such as one-way valves and through control valve, realize high pressure and normally work, hyperbaric chamber also can not be communicated with external pressure fluid, and control chamber is only realized and continued normal work by external pressure fluid.
As preferably, in fluid operating of living in chamber, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption of living in is high-pressure liquid, and in fluid operating of living in chamber, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption of living in is low-pressure fluid.When this hydraulic machinery control structure is used as motor, influent stream chamber is hyperbaric chamber, going out to flow chamber is low-pressure cavity, in fluid operating of living in chamber, rising section blade upper-end surface and lower end surface blade cavity of resorption of living in inside, be high-pressure liquid, pressure is in a basic balance, and blade is subject to the effect of stepped shaft pin area difference hydrodynamic pressure to be adjacent to stator inner surface; In fluid operating of living in chamber, decline section blade upper-end surface and lower end surface, blade cavity of resorption of living in is discharge low-pressure fluid, and blade is subject to stepped shaft pin control chamber fluid pressure action to be adjacent to stator inner surface, thereby guarantees the reliable startup of motor and normal work.
As preferably, in fluid operating of living in chamber, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption of living in is low-pressure fluid, and in fluid operating of living in chamber, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption of living in is high-pressure liquid.When this hydraulic machinery control structure is used as pump, influent stream chamber is low-pressure cavity, going out to flow chamber is hyperbaric chamber, in fluid operating of living in chamber, rising section blade upper-end surface and blade lower end surface blade cavity of resorption of living in inside, be influent stream low-pressure fluid, blade is subject to stepped shaft pin control chamber fluid pressure action to be adjacent to stator inner surface, in fluid operating of living in chamber, decline section blade upper-end surface and lower end surface, blade cavity of resorption of living in is discharge high-pressure liquid, upper and lower hydrodynamic pressure is in a basic balance, blade is subject to stepped shaft pin area difference fluid pressure action to be adjacent to stator inner surface, appropriate design stepped shaft pin area and big or small end face product moment, can make all-round scope blade more rationally controlled to the pressure of stator, both the wearing and tearing of this commute inefficacy friction pair had been controlled, guarantee to be again adjacent between blade and stator reliable and under different operating modes stable operation, thereby improve the service behaviour of pump and at the labor aptitude compared with under slow-speed of revolution condition.
The invention has the beneficial effects as follows: this hydraulic machinery control structure, having overcome existing hydraulic vane motor adopts spring structure to make blade be close to the inherent defect that this structure that stator startup work exists is brought, spring easily lost efficacy and causes functional reliability poor, when impacting force causes zero load, produce unnecessary power loss, and cause the problems such as product mounting or dismounting inconvenience.
This hydraulic machinery control structure, adopt the stepped column pin structure of hydraulic control, by the area of appropriate design stepped shaft pin, make blade there is effective breakout pressure to stator inner surface, form all-round good contact, guarantee motor operations high efficient and reliable, thereby can realize higher working pressure.
When this hydraulic machinery control structure is used for hydraulic vane pump, by designing the area of suitable stepped shaft pin, when making pump at influent stream section or going out to flow section, blade all has the contact of reasonably stability to stator, thereby effectively improve the service behaviour of pump, and when compared with the slow-speed of revolution, still can guarantee the good contact of blade and stator, improve tick-over reliability, and this structure manufacturing process is good, features simple structure, is easy to realize.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of hydraulic machinery control mechanism of the present invention;
Fig. 2 is a kind of partial sectional view of hydraulic machinery control mechanism of the present invention;
Fig. 3 is a kind of axial partial sectional view of hydraulic mechanism control mechanism in Fig. 2;
Fig. 4 is the another kind of partial sectional view of hydraulic machinery control mechanism of the present invention;
Fig. 5 is a kind of partial structurtes schematic diagram of hydraulic mechanism control mechanism in the embodiment of the present invention 2;
Fig. 6 is a kind of partial structurtes schematic diagram of hydraulic mechanism control mechanism in the embodiment of the present invention 3;
Fig. 7 is a kind of partial structurtes schematic diagram of hydraulic mechanism control mechanism in the embodiment of the present invention 4;
Fig. 8 is a kind of axial partial sectional view of the hydraulic control in Fig. 7;
Fig. 9 is a kind of partial structurtes schematic diagram of hydraulic mechanism control mechanism in the embodiment of the present invention 5;
Figure 10 is a kind of partial structurtes schematic diagram of hydraulic control in word embodiment 6 of the present invention;
In figure: 1, influent stream chamber, 2, go out to flow chamber, 3, radial groove, 4, rotor, 5, blade, 6, stator, 7, rising section, 8, decline section, 9, fluid operating chamber, 10, blade cavity of resorption, 11, shoulder hole, 12, stepped shaft pin, 13, stepped cavity, 14, control chamber, 15, lining, 16, big column hole, 17, small cylindrical opening, 18, inner ring, 19, great circle pin, 20, roundlet pin, 21, little duct, 22, low-pressure channel, 23, two-position three way control valve, 24, external pressure fluid, 25, two-position four-way control valve.
Embodiment
Below by specific embodiment, also by reference to the accompanying drawings technological scheme of the present invention is described in further detail.
Embodiment 1:
At Fig. 1, in embodiment shown in Fig. 2, a kind of hydraulic machinery control mechanism, comprise and be communicated with the influent stream chamber 1 of external pressure fluid and go out to flow chamber 2, be provided with the rotor 4 of some radial grooves 3, be equipped with radial groove 3 and some blades 5 that radially groove 3 radially slides, be located at the stator 6 of rotor 4 outsides, be arranged on the side plate of rotor 4 both sides, stator 6 is upwards being provided with at least one rising section 7 and at least one decline section 8 its week, adjacent two blades 5 and rotor 4 outer surfaces, between stator 6 internal surfaces and side plate, form fluid operating chamber 9, 9 inside, blade 5 residing fluid operating chamber, upper end are connected with high-pressure liquid or low-pressure fluid, blade cavity of resorption 10 is formed on blade 5 lower ends and rotor radial groove 3 bottoms, influent stream chamber 1 and go out to flow chamber 2 and be respectively hyperbaric chamber or low-pressure cavity, every radial groove 3 bottoms of rotor 4 offer respectively shoulder hole 11, the center line that shoulder hole 11 is arranged on the axial neutral position of rotor radial groove 3 and shoulder hole 11 is parallel to radially cell wall (see figure 3) of rotor radial groove 3.
When this hydraulic machinery control structure is used as motor, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid.When this hydraulic machinery control structure is used as pump, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid.
The low-pressure channel 22(that this hydraulic machinery control mechanism can also arrange connection external fluid is shown in Fig. 4), stepped cavity 13 communicates with described low-pressure channel 22 through runner, and control chamber 14 communicates with influent stream chamber 1 and the hyperbaric chamber that goes out to flow in chamber 2 through runner.Blade 5 inside are radially also provided with the aperture road 21 that is communicated with fluid operating chamber, blade upper end 9 and blade cavity of resorption 10, and blade cavity of resorption 10 communicates with fluid operating of living in chamber, this blade upper end 9 through aperture road 21.
Embodiment 2:
In the embodiment shown in fig. 5, a kind of hydraulic machinery control mechanism, comprise and be communicated with the influent stream chamber 1 of external pressure fluid and go out to flow chamber 2, be provided with the rotor 4 of some radial grooves 3, be equipped with radial groove 3 and some blades 5 that radially groove 3 radially slides, be located at the stator 6 of rotor 4 outsides, be arranged on the side plate of rotor 4 both sides, stator 6 is upwards being provided with at least one rising section 7 and at least one decline section 8 its week, adjacent two blades 5 and rotor 4 outer surfaces, between stator 6 internal surfaces and side plate, form fluid operating chamber 9, 9 inside, blade 5 residing fluid operating chamber, upper end are connected with high-pressure liquid or low-pressure fluid, blade cavity of resorption 10 is formed on blade 5 lower ends and rotor radial groove 3 bottoms, influent stream chamber 1 and go out to flow chamber 2 and be respectively hyperbaric chamber or low-pressure cavity, every radial groove 3 bottoms of rotor 4 offer respectively shoulder hole 11, the center line that shoulder hole 11 is arranged on the axial neutral position of rotor radial groove 3 and shoulder hole 11 is parallel to radially cell wall of rotor radial groove 3.
When this hydraulic machinery control structure is used as motor, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid.When this hydraulic machinery control structure is used as pump, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid.
This hydraulic machinery control mechanism also can arrange external fluid under pressure 4, external fluid under pressure 4 can be from the little pump of coaxial connection or other pressure fluid of hydraulic system, stepped cavity 13 communicates with the low-pressure cavity that external fluid under pressure 4 and influent stream chamber 1 go out to flow chamber 2 respectively through two-position three way control valve 23, control chamber 14 communicates with influent stream chamber 1 and the hyperbaric chamber that goes out to flow in chamber 2 through fluid passage, and blade cavity of resorption 10 communicates with fluid operating of living in chamber, blade upper end 9 through runner.
Blade cavity of resorption 10 communicates with fluid operating of living in chamber, blade upper end 9 for aperture road 21 through runner herein.System when zero load or off-load with two-position three way control valve 23 switching controls, effect by external fluid under pressure 4 makes in vane pump retraction rotor, stops Fluid Circulation to reduce energy consumption, during only disconnected external fluid under pressure 4, blade stretches out, and Fluid Circulation recovers normal work.
Embodiment 3:
In the embodiment shown in fig. 6, a kind of hydraulic machinery control mechanism, basic identical with the described a kind of hydraulic machinery control mechanism in embodiment 2, difference is: stepped cavity 13 and control chamber 14 communicate with low-pressure cavity and external fluid under pressure 4 that influent stream chamber 1 goes out to flow in chamber 2 respectively through two-position four-way control valve 25, and blade cavity of resorption 10 communicates with fluid operating of living in chamber, blade upper end 9 through runner.Influent stream chamber 1 communicates with external fluid under pressure 4 through one-way valve with the hyperbaric chamber that goes out to flow in chamber 2.
Embodiment 4:
At Fig. 7, in embodiment shown in Fig. 8, a kind of hydraulic machinery control mechanism, comprise and be communicated with the influent stream chamber 1 of external fluid and go out to flow chamber 2, be provided with the rotor 4 of some radial grooves 3, be equipped with radial groove 3 and some blades 5 that radially groove 3 slides, be located at the stator 6 of rotor 4 outsides, be arranged on the side plate of rotor 4 both sides, stator 6 is upwards being provided with at least one rising section 7 and at least one decline section 8 its week, adjacent two blades 5 and rotor 4 outer surfaces, between stator 6 internal surfaces and side plate, form fluid operating chamber 9, 9 inside, blade 5 residing fluid operating chamber, upper end are connected with high-pressure liquid or low-pressure fluid, blade cavity of resorption 10 is formed on blade 5 lower ends and rotor radial groove 3 bottoms, influent stream chamber 1 and go out to flow chamber 2 and be respectively hyperbaric chamber or low-pressure cavity, every radial groove 3 bottoms of rotor 4 offer respectively shoulder hole 11, the inner slip of shoulder hole 11 is provided with stepped shaft pin 12.
When this hydraulic machinery control structure is used as motor, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid.When this hydraulic machinery control structure is used as pump, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid.
This hydraulic machinery control mechanism also can be provided with the low-pressure channel 22 that is communicated with external fluid as required.Stepped cavity 13 communicates or communicates with described low-pressure channel 22 with influent stream chamber 1 and the low-pressure cavity that goes out to flow in chamber 2 through runner, control chamber 14 communicates with influent stream chamber 1 and the hyperbaric chamber that goes out to flow in chamber 2 through runner, and blade cavity of resorption 10 communicates with fluid operating of living in chamber, this blade upper end 9 through runner (this runner can be by being arranged on rotor or blade or side plate).
Embodiment 5:
In the embodiment shown in fig. 9, a kind of hydraulic machinery control mechanism, comprise and be communicated with the influent stream chamber 1 of external fluid and go out to flow chamber 2, be provided with the rotor 4 of some radial grooves 3, be equipped with radial groove 3 and some blades 5 that radially groove 3 slides, be located at the stator 6 of rotor 4 outsides, be arranged on the side plate of rotor 4 both sides, stator 6 is upwards being provided with at least one rising section 7 and at least one decline section 8 its week, adjacent two blades 5 and rotor 4 outer surfaces, between stator 6 internal surfaces and side plate, form fluid operating chamber 9, 9 inside, blade 5 residing fluid operating chamber, upper end are connected with high-pressure liquid or low-pressure fluid, blade cavity of resorption 10 is formed on blade 5 lower ends and rotor radial groove 3 bottoms, influent stream chamber 1 and go out to flow chamber 2 and be respectively hyperbaric chamber or low-pressure cavity, every radial groove 3 bottoms of rotor 4 offer respectively shoulder hole 11, the inner slip of shoulder hole 11 is provided with stepped shaft pin 12.
When this hydraulic machinery control structure is used as motor, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid.When this hydraulic machinery control structure is used as pump, in fluid operating of living in chamber 9, rising section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is low-pressure fluid, and in fluid operating of living in chamber 9, decline section blade upper-end surface and blade lower end surface, blade cavity of resorption 10 of living in is high-pressure liquid.
This hydraulic machinery control mechanism also can arrange low-pressure channel 22 and the external fluid under pressure 4 that is communicated with external fluid, described external fluid under pressure 4 can be from the little pump of coaxial connection or other pressure fluids of hydraulic system, stepped cavity 13 communicates with external fluid under pressure 4 and described low-pressure channel 22 respectively through two-position three way control valve 23, control chamber 14 communicates with influent stream chamber 1 and the hyperbaric chamber that goes out to flow in chamber 2 through fluid passage, and blade cavity of resorption 10 communicates with fluid operating of living in chamber, blade upper end 9 through fluid passage.System when zero load or off-load with two-position three way control valve 23 switching controls, effect by external fluid under pressure 4 makes in vane pump retraction rotor, stops Fluid Circulation to reduce energy consumption, during only disconnected external fluid under pressure 4, blade stretches out, and Fluid Circulation recovers normal work.
Embodiment 6:
In the embodiment shown in fig. 10, a kind of hydraulic machinery control mechanism, basic identical with the structure in embodiment 5, difference is: stepped cavity 13 and control chamber 14 communicate with external fluid under pressure 4 and described low-pressure channel 22 respectively through two-position four-way control valve 25, and blade cavity of resorption 10 communicates with fluid operating of living in chamber, blade upper end 9 through fluid passage.By two-position four-way control valve switching controls, reliable operation is sensitive.When zero load or off-load, the effect of external fluid under pressure 4 makes in blade retraction groove, stop Fluid Circulation, switching 25 of two-position four-way control valves makes blade shoot out the normal work of recovery through external fluid under pressure 4 effects, hyperbaric chamber is communicated with control chambers 14 through external fluid under pressure 4 of connection such as one-way valves and through two-position four-way control valve 25, realize high pressure and normally work, hyperbaric chamber also can not be communicated with external fluid under pressure 4, and 14 of control chambers are realized and continued normal work by external fluid under pressure 4.
This hydraulic machinery control structure described in above-described embodiment:
During as motor, influent stream chamber 1 is hyperbaric chamber, go out to flow chamber 2 for low-pressure cavity, stepped cavity 13 connects low-pressure channel 22, at rising section 7 blade upper-end surface active chamber 9 of living in and lower end surface blade cavity of resorption 10 of living in, be high-pressure liquid, pressure is in a basic balance, and blade 5 is subject to the effect of stepped shaft pin or big or small pin area difference hydrodynamic pressure to be adjacent to stator 6 internal surfaces; At decline section 8 blade upper-end surface active chamber 9 of living in and lower end surface blade cavity of resorption 10 of living in, be discharge low-pressure fluid, blade 5 is subject to stepped shaft pin control chamber 14 fluid pressure action to be adjacent to stator 6 internal surfaces; During startup, blade 5 is stretched out by stepped shaft pin area difference fluid pressure action and is adjacent to stator 6 surfaces, thereby guarantees the normal work of motor overall process and reliable startup.
During as pump, influent stream chamber 1 is low-pressure cavity, go out to flow chamber 2 for hyperbaric chamber, at rising section 7 blade upper-end surface active chamber 9 of living in and lower end surface blade cavity of resorption 10 of living in, be influent stream low-pressure fluid, blade 5 is subject to stepped shaft pin control chamber 14 fluid pressure action to be adjacent to stator 6 internal surfaces, at decline section 8 blade upper-end surface active chamber 9 of living in and lower end surface blade cavity of resorption 10 of living in, be discharge high-pressure liquid, upper and lower hydrodynamic pressure is in a basic balance, blade 5 is subject to stepped shaft pin area difference fluid pressure action to be adjacent to stator 6 internal surfaces, appropriate design pin area and big or small end face product moment, can make all-round scope blade more rationally controlled to the pressure of stator, both the wearing and tearing of this commute inefficacy friction pair had been controlled, guarantee to be again adjacent between blade and stator reliable and under different operating modes stable operation, thereby improve the service behaviour of pump and at the labor aptitude compared with under slow-speed of revolution condition.
This hydraulic machinery control mechanism, by shoulder hole 11 being set at rotor radial groove bottom, and inner slip of shoulder hole 11, stepped shaft pin 12 is set, stepped cavity 13 and control chamber 14 in whole hydraulic-mechanic system, have been increased, and stepped cavity 13 communicates or communicates with low-pressure channel 22 with influent stream chamber 1 and the low-pressure cavity that goes out to flow in chamber 2 through runner, control chamber 14 communicates with influent stream chamber 1 and the hyperbaric chamber that goes out to flow in chamber 2 through runner, and blade cavity of resorption 10 communicates with fluid operating of living in chamber, this blade upper end 9 through runner.This runner can adopt aperture road 21, also can adopt the mode of communicating of other structures, as long as can realize communicating of blade cavity of resorption 10 and fluid operating chamber 9.When this hydraulic machinery control structure is applied in motor, by the area of appropriate design stepped shaft pin 12, control the pressure difference of stepped cavity 13, control chamber 14 and fluid operating chamber 9 internal fluid pressures, make 5 pairs of stators 6 of blade there is effective pressure, form good contact, guarantee motor operations high efficient and reliable, thereby can realize higher working pressure, the unnecessary power consumption that while also having avoided unloaded, impacting force causes.When this hydraulic machinery control structure is applied to hydraulic vane pump, by designing the area of suitable stepped shaft pin 12, when making pump at influent stream section 7 or going out to flow section 8,5 pairs of stators 6 of blade all have the contact of reasonably stability, thereby effectively improve the service behaviour of pump, and when compared with the slow-speed of revolution, still can guarantee the good contact of blade and stator, improve tick-over reliability.And these hydraulic machinery control structure mounting or dismounting are easy to maintenance, and manufacturing process is good, features simple structure is easy to realize.
Claims (10)
1. a hydraulic machinery control mechanism, comprise and be communicated with the influent stream chamber (1) of external fluid and go out to flow chamber (2), be provided with the rotor (4) of some radial grooves (3), be equipped with radial groove (3) and some blades (5) that radially groove (3) slides, be located at the outside stator (6) of rotor (4), be arranged on the side plate of rotor (4) both sides, stator (6) is upwards being provided with at least one rising section (7) and at least one decline section (8) its week, adjacent two blades (5) and rotor (4) outer surface, between stator (6) internal surface and side plate, form fluid operating chamber (9), blade cavity of resorption (10) is formed on blade (5) lower end and rotor radial groove (3) bottom, described influent stream chamber (1) and go out to flow chamber (2) and be respectively hyperbaric chamber or low-pressure cavity, it is characterized in that: every radial groove (3) bottom of described rotor (4) offers respectively shoulder hole (11), the inner slip of described shoulder hole (11) is provided with stepped shaft pin (12), the small end of stepped shaft pin (12) passes blade cavity of resorption (10) towards blade (5) lower end, between the inner hole wall of the outer peripheral surface of stepped shaft pin (12) small end and shoulder hole (11) macropore, form stepped cavity (13), formation control chamber (14) between the big column lower end surface of stepped shaft pin (12) and shoulder hole (11) bottom.
2. a kind of hydraulic machinery control mechanism according to claim 1, it is characterized in that: the center line that described shoulder hole (11) is arranged on the axial neutral position of rotor radial groove (3) and shoulder hole (11) is parallel to radially cell wall of rotor radial groove (3), described shoulder hole (11) is split-type structural, described shoulder hole (11) consists of the small cylindrical opening (17) that is arranged on the big column hole (16) of rotor radial groove (3) bottom and coordinate big column hole (16) to be arranged on the inner lining (15) in big column hole (16), described big column hole (16) coaxially arranges with small cylindrical opening (17).
3. a kind of hydraulic machinery control mechanism according to claim 1, it is characterized in that: the center line that described shoulder hole (11) is arranged on the axial neutral position of rotor radial groove (3) and shoulder hole (11) is parallel to radially cell wall of rotor radial groove (3), described shoulder hole (11) is split-type structural, described shoulder hole (11) is by being arranged on the small cylindrical opening (17) of rotor radial groove (3) bottom and being arranged on big column hole (16) formation on the inner ring (18) of rotor inner side, described inner ring (18) is upper is provided with the big column hole (16) corresponding with every rotor radial groove (3) along circumference, small cylindrical opening (17) correspondence of big column hole (16) and rotor radial groove (3) bottom communicates.
4. according to a kind of hydraulic machinery control mechanism described in claim 1 or 2 or 3, it is characterized in that: stepped shaft pin (12) is split-type structural or integral structure, the stepped shaft pin (12) of split-type structural comprises great circle pin (19) and roundlet pin (20), the movable upper-end surface that arranges or be connected to great circle pin (19) of roundlet pin (20); The stepped shaft pin (12) of integral structure is less than the cylindrical structure of lower end cylinder for upper end cylinder, and the axle section of the stepped shaft pin (12) of integral structure is T character form structure.
5. according to a kind of hydraulic machinery control mechanism described in claim 1 or 2 or 3, it is characterized in that: stepped cavity (13) communicates through runner and influent stream chamber (1) and the low-pressure cavity that goes out to flow in chamber (2), described control chamber (14) communicates through runner and influent stream chamber (1) and the hyperbaric chamber that goes out to flow in chamber (2), and described blade cavity of resorption (10) communicates with fluid operating of living in chamber, this blade upper end (9) through runner.
6. according to a kind of hydraulic machinery control mechanism described in claim 1 or 2 or 3, it is characterized in that: this hydraulic machinery control mechanism also can arrange the low-pressure channel (22) that is communicated with external fluid, stepped cavity (13) communicates with described low-pressure channel (22) through runner, described control chamber (14) communicates through runner and influent stream chamber (1) and the hyperbaric chamber that goes out to flow in chamber (2), and described blade cavity of resorption (10) communicates with fluid operating of living in chamber, this blade upper end (9) through runner.
7. according to a kind of hydraulic machinery control mechanism described in claim 1 or 2 or 3, it is characterized in that: this hydraulic machinery control mechanism also can arrange external pressure fluid (24), described external pressure fluid (24) can be from the little pump of coaxial connection or other pressure fluid of hydraulic system, stepped cavity (13) communicates with the low-pressure cavity that external pressure fluid (24) and influent stream chamber (1) go out to flow in chamber (2) respectively through two-position three way control valve (23), and control chamber (14) communicates through fluid passage and influent stream chamber (1) and the hyperbaric chamber that goes out to flow in chamber (2); Or, stepped cavity (13) and control chamber (14) communicate with low-pressure cavity and external pressure fluid (24) that influent stream chamber (1) goes out to flow in chamber (2) respectively through two-position four-way control valve (25), and blade cavity of resorption (10) communicates with fluid operating of living in chamber, blade upper end (9) through runner.
8. according to a kind of hydraulic machinery control mechanism described in claim 1 or 2 or 3, it is characterized in that: this hydraulic machinery control mechanism also can arrange low-pressure channel (22) and the external pressure fluid (24) that is communicated with external fluid, described external pressure fluid (24) can be from the little pump of coaxial connection or other pressure fluids of hydraulic system, stepped cavity (13) communicates with external pressure fluid (24) and described low-pressure channel (22) respectively through two-position three way control valve (23), control chamber (14) communicates through fluid passage and influent stream chamber (1) and the hyperbaric chamber that goes out to flow in chamber (2), or stepped cavity (13) and control chamber (14) communicate with external pressure fluid (24) and described low-pressure channel (22) respectively through two-position four-way control valve (25), and blade cavity of resorption (10) communicates with fluid operating of living in chamber, blade upper end (9) through fluid passage.
9. according to a kind of hydraulic machinery control mechanism described in claim 1 or 2 or 3, it is characterized in that: in fluid operating of living in chamber, rising section (7) blade upper-end surface (9) and blade lower end surface blade cavity of resorption of living in (10), be high-pressure liquid, in fluid operating of living in chamber, decline section (8) blade upper-end surface (9) and blade lower end surface blade cavity of resorption of living in (10), be low-pressure fluid.
10. according to a kind of hydraulic machinery control mechanism described in claim 1 or 2 or 3, it is characterized in that: in fluid operating of living in chamber, rising section (7) blade upper-end surface (9) and blade lower end surface blade cavity of resorption of living in (10), be low-pressure fluid, in fluid operating of living in chamber, decline section (8) blade upper-end surface (9) and blade lower end surface blade cavity of resorption of living in (10), be high-pressure liquid.
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| CN201310586216.6A CN103671101B (en) | 2013-11-21 | 2013-11-21 | A kind of hydraulic mechanical control mechanism |
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| CN101147002A (en) * | 2005-10-06 | 2008-03-19 | 约马液压机械有限公司 | Vane cell pump |
| CN101260882A (en) * | 2007-03-05 | 2008-09-10 | 株式会社日立制作所 | Variable displacement vane pump |
| CN203717232U (en) * | 2013-11-21 | 2014-07-16 | 胡凯 | Hydraulic control mechanism for pump and motor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101091062A (en) * | 2005-02-23 | 2007-12-19 | Lg电子株式会社 | Capacity varying type rotary compressor and refrigeration system having the same |
| CN101147002A (en) * | 2005-10-06 | 2008-03-19 | 约马液压机械有限公司 | Vane cell pump |
| CN101260882A (en) * | 2007-03-05 | 2008-09-10 | 株式会社日立制作所 | Variable displacement vane pump |
| CN203717232U (en) * | 2013-11-21 | 2014-07-16 | 胡凯 | Hydraulic control mechanism for pump and motor |
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Effective date of registration: 20161101 Address after: 315040 Zhejiang province Jiangdong District of Ningbo City Thunder Lane No. 116 Patentee after: Hu Yang Address before: West Road north of the city of Xianju County of Taizhou City, Zhejiang Province, No. 31 317300 Patentee before: Hu Kai |