CN102926959A - Swash plate type axial piston pump or motor - Google Patents
Swash plate type axial piston pump or motor Download PDFInfo
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- CN102926959A CN102926959A CN201210440938.6A CN201210440938A CN102926959A CN 102926959 A CN102926959 A CN 102926959A CN 201210440938 A CN201210440938 A CN 201210440938A CN 102926959 A CN102926959 A CN 102926959A
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Abstract
The invention provides a swash plate type axial piston pump or a motor, which comprises a shell, a main shaft, a plurality of piston components, a swash plate, a cylinder, a distributive flow disk and a connecting part, wherein the connecting part comprises a first part and a second part which relatively swing, the first part is combined with the main shaft and synchronously rotates with the main shat, the swash plate is combined with the second part and synchronously rotates with the second part, a cylindrical inner hole is arranged on the center of the cylinder, the main shaft stretches into the cylindrical inner hole, the main shaft and the cylindrical inner hole are matched, and when the main shat rotates, the cylinder is driven by the piston components to rotate. The main shaft and the cylinder of the swash plate type axial piston pump can form clearance fit, the transmission line of the swash plate type axial piston pump is the main shaft, the connecting part, the swash plate, the piston components and the cylinder, and the swash plate type axial piston pump has the advantages of excellent assembly, high total efficiency and small lateral force, and can achieve the advantages of coaxial or through-shaft connection and the like.
Description
Technical field
The present invention relates to Hydraulic Field, specifically, relate to a kind of swash plate plunger pump or oblique tray type plunger motor.
Background technique
Oil hydraulic pump and oil hydraulic motor are very important energy conversion components in the hydraulic system, and oil hydraulic pump converts mechanical energy to hydraulic energy, and oil hydraulic motor converts hydraulic energy to mechanical energy, and both can switch mutually in theory, just have the part difference.Concise and to the point on illustrating, the design of this paper expound oil hydraulic pump, the structure of oil hydraulic motor can be with reference to the description of oil hydraulic pump.
Plunger pump is wherein a kind of form of oil hydraulic pump.Plunger pump with its high pressure, at a high speed, the plurality of advantages such as efficient and variable easy to control obtained in fields such as engineering machinery using widely.Different according to the layout of plunger and moving direction and transmission main shaft relative position, plunger pump can be divided into axial piston pump and radial plunger pump two classes.And axial piston pump is changed the mechanism according to its motion and can be divided into swash plate plunger pump (having another name called the direct shaft type axial piston pump) and bent axis type axial piston pump.
For swash plate plunger pump, its plunger axis is with the Boring mill line parallel or near parallel, and cylinder body axis and transmission dead in line.Be distributed on the piston shoes of the plunger assembly end in the cylinder body cylinder hole, owing to be subject to the spacing of return plate, be close on the inclined-plane of swash plate.When the prime mover driven transmission shaft rotates, drive the plunger group by cylinder body and rotate, while plunger group is because of the spacing relation on swash plate inclined-plane, and is reciprocating with respect to cylinder body, thereby realizes the operating mode of imbibition and hydraulic fluid.
Swash plate plunger pump has three pairs of main friction pairs: cylinder body and thrust plate, plunger and cylinder body cylinder hole, plunger piston slippery boots and swash plate.Since plunger piston slippery boots in normal force suffered on the swash plate so that plunger also has tangential force and moment when bearing axial force, this force and moment comes balance by the rotor cylinder hole to the active force of plunger, and the sliding friction under this force and moment effect will cause the reduction of mechanical efficiency and the wearing and tearing of parts.Cylinder body also because being subject to the tilting moment effect so that central shaft produces amount of deflection.Therefore, mainly there is a following difficult problem in swash plate plunger pump: the one, and total efficiency is relatively low; The 2nd, relatively more responsive to oil contamination; The 3rd, allow rotating speed not high.
For bent axis type axial piston pump, its main shaft and cylinder body axis but in an angle, are compared following advantage with swash plate plunger pump not on the same straight line: the one, and the lateral force that plunger bears is much smaller, thereby the frictional loss that lateral force causes is less; The 2nd, plunger or plunger connecting rod bulb and main shaft are connected firmly, and compare with swash plate plunger pump to have stronger suction capacity; The 3rd, inclined shaft pump main shaft does not need to pass thrust plate, reduces so that diameter of cylinder is corresponding, and leakage and frictional loss reduce.Therefore the overall efficiency of inclined shaft pump will be higher than swash plate pump, under equal technological level than the high 3%-4% of swash plate pump.
But bent axis type axial piston pump relies on cylinder body to swing to realize variable, needs larger swing space, so that boundary dimension is larger; Bent axis type axial piston pump can not adopt the axle of perforation or the mode that diaxon is connected, thereby realizes relatively difficulty of duplex pump.
Problem for aforementioned swash plate plunger pump existence, application number is that 200780009019.0 Chinese patent file discloses a kind of axial piston pump or motor, this patent is in conjunction with the structural advantage of bent axis type axial piston pump, and apply it on the swash plate plunger pump, its cylinder body is by the main shaft driven rotary, main shaft rotates by constant-speed universal coupling driven rotary swash plate simultaneously, and the plunger assembly that is articulated on the wobbler is made axially reciprocating in plunger hole, realizes suction and the extrusion of fluid.
For this technological scheme, there are a plurality of assembling matching relationships, one is the spline fitted between main shaft and the Hooks coupling universal coupling, it two is spline fitted between main shaft and the cylinder body, it three is being sealed and matched between plunger and the plunger hole, and it four is cooperating between ball-and-socket and the plunger connecting rod bulb on the swash plate.Above matching relationship is more, and then manufacture difficulty is larger.
Because cylinder body and swash plate are rotated by main shaft drives simultaneously, after being assembled to main shaft on by spline cylinder body, also need by spline Hooks coupling universal coupling and swash plate to be assembled on the main shaft, at this moment, it is very difficult that any one that guarantees a plurality of plunger assemblies all is assemblied between swash plate ball-and-socket and the plunger hole exactly, very harsh requirement has been proposed the manufacturing precision, when serious even can't assemble.And, even assembling is finished, the problems such as assembly precision is low, plunger seal is poor also may appear, oil liquid leakage and frictional loss are larger, affect the overall efficiency of this swash plate plunger pump.
Summary of the invention
In view of this, the present invention aims to provide a kind of swash plate plunger pump or motor, and this plunger pump or motor can reduce assembling difficulty, improves assembly precision and overall efficiency.
Swash plate plunger pump of the present invention or motor, comprise housing, the thrust plate that is arranged at the main shaft on the described housing, a plurality of plunger assembly, the swash plate, the cylinder body that is provided with plunger hole that are connected with described plunger assembly first end rotationally, is arranged at described cylinder ends, and comprise connected element, wherein:
Described connected element comprises first component and the second component of relative swing, described first component rotates in conjunction with described main shaft and with described spindle synchronous, described swash plate rotates synchronously in conjunction with described second component and with described second component, and the rotation axis of described main shaft and the rotation axis of described swash plate are mutually angle;
The center of described cylinder body offers the cylindricality endoporus, and described main shaft stretches into described cylindricality endoporus, and forms between described main shaft and described cylindricality endoporus and cooperate, and when main shaft rotated, described cylinder body rotated under the drive of plunger assembly.
Further, the first end of described plunger assembly is provided with bulb, is provided with ball-and-socket on the described swash plate, and described bulb is arranged at and forms ball pivot in the ball-and-socket of described swash plate and connect, and also is provided with on the described swash plate for the return plate spacing to described bulb.
Further, the second end of described plunger assembly slides and is arranged in the plunger hole of described cylinder body, described plunger assembly comprises plunger rod, described plunger rod has cone structure, wherein, end away from described cylinder body is the small end of described cone structure, and an end of contiguous described cylinder body is the large end of described cone structure.
Further, also comprise balance and stroking mechanism, wherein:
Described balance is arranged on the described housing under the driving of described stroking mechanism swingably, and described swash plate connects described balance, when described balance swings, and the corresponding adjustment of the angle of yaw of described swash plate.
Further, connect by swashplate bearing between described swash plate and the described balance, be provided with boss on the described swash plate, be provided with groove on the described balance, the inner ring of described swashplate bearing connects described boss, and the outer ring of described swashplate bearing connects described groove.
Further, described balance is supported on the described housing by two bearing pins, and swings centered by the axis of described two bearing pins, the whole gudgeon formula supporting structure that forms.
Further, described balance is connected on the described housing by the crescent moon bearing, and swings centered by the axis of described crescent moon bearing, the whole bracket type supporting structure that forms.
Further, described stroking mechanism is the variable piston, and described variable piston connects described balance, and described variable piston stretches out under the effect of hydraulic coupling and spring force respectively and retracts.
Further, also comprise elastic element, described elastic element acts on the described cylinder body, is used for the end face of described cylinder body is pressed in described thrust plate.
Further, described connected element is ball pivot, and described first component is the inner ring of described ball pivot, and described second component is the outer ring of described ball pivot, connects for crowned spline between the inner ring of described ball pivot and the outer ring of described ball pivot.
Further, described first component is for being provided with the inner ring of concave tracks at outer surface, described second component is for being provided with the outer ring of concave tracks at internal surface, spin or slide block are installed between the concave tracks of described first component and second component, and described spin or slide block move with the direction that departs from main-shaft axis in concave tracks.
Further, the formation that is combined as a whole between described first component and the described main shaft, and/or the formation that is combined as a whole between described second component and the described swash plate.
Further, described swash plate plunger pump or motor comprise at least 2 independently described housings, are provided with described a plurality of plunger assembly, swash plate, cylinder body, thrust plate, connected element in each housing, and a main shaft connects each housing.
The drive path of swash plate plunger pump of the present invention is main shaft, connected element, swash plate, plunger assembly, cylinder body, drive in the process of cylinder body rotation at plunger assembly, plunger assembly also moves back and forth in the plunger hole of cylinder body, thereby realize the process of oil suction and force feed, and then realize the conversion between mechanical energy and the hydraulic energy.The working principle of oblique tray type plunger motor is reversible in aforementioned swash plate plunger pump.
Cylinder body of the present invention center offers the cylindricality endoporus, forms the hole axle between this cylindricality endoporus and the main shaft and cooperates.For the spline fitted of prior art main shaft and cylinder body, reduced the assembling matching relationship, the relative reduce that requires to the machining accuracy of each parts, can more easily a plurality of plunger assemblies be assemblied between swash plate ball-and-socket and the plunger hole exactly, and can guarantee plunger seal and assembly precision, have assembling good, be easy to the advantage making and implement.
The present invention has adopted the structure of wobbler and ball pivot plunger, the structural advantages of bent axis type axial piston pump or motor is incorporated in the swash plate plunger pump of the present invention, use the ball pivot plunger assembly to replace the plunger piston slippery boots of existing swash plate plunger pump or motor, and sliding friction become rolling friction, reduce frictional loss and oil liquid leakage, improved the total efficiency of pump or motor.
The friction pair of the present invention for forming between plunger and the plunger hole, the lateral force that its plunger bears is more much smaller than existing swash plate plunger pump or motor, thereby the frictional loss that lateral force causes is less, can reduce the requirement to the oil strain precision, so that the impact resistance of pump or motor, oil resistant dirt, limit speed and life-span are improved.
The present invention is for bent axis type axial piston pump or motor, because spatial structure is compact, and main shaft crosses in housing, need can be applied to coaxial transmission or logical driven off by shaft occasion, such as duplex pump etc., thereby forms pump group or groups of motors structure.
In a word, the present invention has also guaranteed assembly precision and overall efficiency in the advantage of taking into account bent axis type axial piston pump or motor and direct shaft type plunger pump or motor, the invention has the beneficial effects as follows apparent.
Description of drawings
Fig. 1 is the swash plate plunger pump of one embodiment of the invention or the structural representation of motor;
Fig. 2 is A-A sectional view embodiment illustrated in fig. 1;
Fig. 3 a is the structural representation of balance, swash plate and the second component part of one embodiment of the invention;
Fig. 3 b is the structural representation of the first component of one embodiment of the invention;
Fig. 4 a is the structural representation of balance, swash plate and the second component part of another embodiment of the present invention;
Fig. 4 b is the structural representation of the first component of another embodiment of the present invention;
Fig. 5 is the swash plate plunger pump of another embodiment of the present invention or the structural representation of motor;
Fig. 6 is A-A sectional view embodiment illustrated in fig. 5.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments the present invention is further described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Illustrated in figures 1 and 2 is the swash plate plunger pump of one embodiment of the invention or the structural representation of motor, and this swash plate plunger pump or motor comprise housing 1, main shaft 2, plunger assembly 3, swash plate 4, cylinder body 5, thrust plate 6 and connected element 7 at least.
This housing 1 plays the skeleton function that supports other parts, and it can comprise front case and rear end cover 11, is bolted and forms the housing structure of sealing between this front case and the rear end cover 11.The split-type structural that it also can adopt front cover, middle casing and rear end cover 11 to form all can be realized technique effect of the present invention.Housing 1 can cylinder iron be cast or alloy aluminum die casting forms.
Main shaft 2 is arranged on the housing 1 rotationally, and it can be supported on the housing 1 by fore bearing 21 and rear bearing 22, and can seal by Oil sealing assembly 23 between main shaft 2 and housing 1.When structure illustrated in figures 1 and 2 during as plunger pump, rotated by this main shaft 2 of prime mover driven; And when this structure during as piston motor, then drive swash plates 4 by plunger assembly 3 to rotate, and then drive main shaft 2 and rotate, the rotation of this main shaft 2 is as the output of mechanical energy.
Plunger assembly 3 comprises a plurality of, and its quantity can be 7,9 or other any possible number.The first end of plunger assembly 3 connects swash plate 4, the second end moves back and forth in the plunger hole of cylinder body 5.Each plunger assembly 3 can be parallel to each other, and the axis of plunger assembly 3 is parallel with main-shaft axis; In addition, also can be not parallel between each plunger assembly 3, can realize technique effect of the present invention equally.
Plunger assembly 3 of the present invention is preferably the ball pivot plunger assembly, and it also can be other structure.The first end of this ball pivot plunger assembly 3 is provided with bulb, is provided with ball-and-socket on the swash plate 4, and bulb is arranged at and forms ball pivot in the ball-and-socket of swash plate 4 and connect.
This ball pivot plunger part is preferably monolithic construction, and its second end slides and is arranged in the plunger hole of cylinder body 5.As another mode of execution, this ball pivot plunger part can be split-type structural, comprise that two ends are provided with connecting rod and the plunger piece of bulb, one of them bulb is arranged in the ball-and-socket of swash plate 4 as the first end of plunger assembly, another bulb is arranged in the endoporus of plunger piece, the plunger piece is arranged in the plunger hole of cylinder body 5, and plunger piece and connecting rod move back and forth with respect to cylinder body 5 together.
Preferred plunger assembly 3 comprises plunger rod, this plunger rod has cone structure, wherein, is the small end of described cone structure away from an end of described cylinder body 5, one end of contiguous described cylinder body 5 is the large end (with reference to figure 5 and Fig. 6) of described cone structure, rotates so that plunger assembly 3 drives cylinder body 5.
Further, can also plunger assembly 3 axially offer oilhole, oilhole is communicated with the hydraulic oil end of the plunger hole of the ball-and-socket of swash plate 4 and cylinder body 5, pressure oil can be introduced the ball-and-socket of swash plate 4 so that it is lubricated by this oilhole.
As previously mentioned, can be provided with ball-and-socket on the swash plate 4 of the present invention, the quantity of this ball-and-socket is consistent with the quantity of plunger assembly 3, and ball-and-socket is uniformly distributed on the swash plate 4, and the line of ball-and-socket central point can form a disc.In addition, also need to be provided with for the return plate 41 spacing to bulb at swash plate 4.The bulb of the first end of ball pivot plunger assembly 3 embeds the ball-and-socket of swash plate 4, and by return plate 41 bulb is limited in the ball-and-socket.This swash plate 4 need to have certain inclination, namely is mutually angle (angle of yaw) between the axis of the axis of this swash plate 4 and main shaft 2.For quantitative plunger pump or motor, the angle of yaw of this swash plate 4 is fixed; And for Variable plunger pump or motor, the angle of yaw of this swash plate 4 can be adjusted.In addition, be provided with through hole on this swash plate 4, so that main shaft 2 passes through and the installation of connected element 7.
Be provided with plunger hole on the cylinder body 5, the quantity of this plunger hole is consistent with the quantity of plunger assembly 3.Cylinder body 5 can be cylindrical structure, also can be conical structure, and the present invention is not limited to this.Plunger assembly 3 to-and-fro motion in plunger hole needs between them to form movingly closely, reveals to prevent fluid.Be provided with thrust plate 6 in the end of cylinder body 5, this thrust plate 6 distributes hydraulic oil to the plunger hole of each cylinder body 5, and the effect of playing its oil-feed of control and going out oil condition.
There are two pairs of friction pairs at this cylinder body 5: plunger assembly 3 and plunger hole, cylinder body 5 and thrust plate 6.Can carry out Wear-resistant Treatment at the corresponding rubbing surface of cylinder body 5, such as nested or coating.Further, the present invention can arrange at the end face of cylinder body 5 spherical concave surface, at the end face of thrust plate 6 spherical convex surface is set, and sphere cooperates between cylinder body 5 and the thrust plate 6, and this sphere is joined and had good Self-centering Action.Should be understood that, also can be that the plane cooperates between cylinder body 5 ends and the thrust plate 6, is beneficial to manufacturing.
In order to guarantee the reliable sealing between cylinder body 5 and the thrust plate 6, the present invention can also comprise elastic element 9, and elastic element 9 acts on the cylinder body 5, is used for the end face of cylinder body 5 is pressed in thrust plate 6.This elastic element 9 can be butterfly or spirality stage clip.
In addition, offer the cylindricality endoporus at the center of cylinder body 5, main shaft 2 stretches into the cylindricality endoporus, and forms between main shaft 2 and cylindricality endoporus and cooperate, and cylinder body 5 rotates under the drive of plunger assembly 3.This cooperation can be Spielpassung, transition fit and interference fit, and preferred gap cooperates.Cooperate by the hole axle, cylinder body 5 can be supported on the main shaft 2.This cylindricality endoporus can be cylindrical bore, also can be circular cone cylindricality endoporus.
As swash plate plunger pump the time, main shaft 2 rotates under the driving of prime mover, and passes through successively the transmission of connected element 7, swash plate 4 and plunger assembly 3, drives at last cylinder body 5 and rotates; And as the oblique tray type plunger motor time, plunger assembly 3 to-and-fro motion under the effect of hydraulic coupling, and drive swash plate 4 and cylinder body 5 rotates, the rotation of swash plate 4 is passed to main shaft 2 after the transmission of connected element 7, drive at last main shaft 2 and rotate.
Need to prove, except aforementioned cylindricality endoporus and plunger hole, can also be provided with other hole on this cylinder body 5, such as mounting hole of being communicated with the cylindricality endoporus etc., the present invention is not limited to this.
Connected element 7 of the present invention comprises first component 71 and the second component 72 of relative swing, first component 71 rotates synchronously in conjunction with main shaft 2 and with main shaft 2, swash plate 4 rotates synchronously in conjunction with second component 72 and with second component 72, and the rotation axis of the rotation axis of main shaft 2 and swash plate 4 is mutually angle.By the transmission of this connected element 7, main shaft 2 can be converted to the rotation of swash plate 4 on the swash plate axis in the rotation on the main-shaft axis.This connected element 7 can be multiple possible mechanism, such as structures such as Hooks coupling universal couplings.
As a kind of mode of execution, shown in Fig. 3 a and Fig. 3 b, this connected element 7 can be ball pivot, and aforementioned first component 71 is the inner ring of ball pivot, and aforementioned second component 72 is the outer ring of ball pivot, connects for crowned spline between the inner ring of ball pivot and the outer ring of ball pivot.The inner ring of ball pivot can be combined by spline, flat key between main shaft 2, also can adopt integrally formed mode; Also can be combined by spline, flat key between swash plate 4 in the outer ring of ball pivot, or adopt integrally formed mode.
The outer surface integral body of the crowned spline on the ball pivot inner ring is spherical, and can be the structure that center tooth is high, two end teeth are low, but also the structure characteristic that transverse tooth thickness is large in the middle of can adopting, the two ends transverse tooth thickness is little, to avoid the interference problem in the relative swing process with the outer ring of inner ring.
As another kind of mode of execution, as shown in Figs. 4a and 4b, first component 71 is for being provided with the inner ring of concave tracks 70 at outer surface, second component 72 is for being provided with the outer ring of concave tracks 70 at internal surface, spin or slide block (not shown) are installed between the concave tracks 70 of first component 71 and second component 72, and spin or slide block roll or slide with the direction that departs from main-shaft axis in concave tracks 70.
Can transmit moment of torsion between main shaft 2 and the swash plate 4 by spin or slide block, in the process that swash plate 4 rotates, spin or slide block move back and forth in concave tracks 70, and the rotation path of the path of concave tracks 70 and swash plate 4 is complementary.
Further, the present invention embodiment illustrated in figures 1 and 2 can also realize the variable adjusting of swash plate plunger pump or motor, and correspondingly it also is provided with balance 8 and stroking mechanism 80.Wherein, this balance 8 is arranged on the housing 1 under the driving of stroking mechanism 80 swingably, and swash plate 4 connects balance 8, when balance 8 swings, and the corresponding adjustment of the angle of yaw of swash plate 4.
Need to prove that swash plate 4 rotates centered by the axis of the second component 72 of connected element 7, and balance 8 only carries out wobbling action, its oscillation center is perpendicular to main-shaft axis (perpendicular to paper direction shown in Figure 1).Therefore, when connecting between swash plate 4 and the balance 8, relatively rotate between swash plate 4 and the balance 8.Preferably connect by swashplate bearing 40 between swash plate 4 and balance 8, be provided with boss on the swash plate 4, be provided with groove on the balance 8, the inner ring of swashplate bearing 40 connects boss, the outer ring connecting groove of swashplate bearing 40.This swashplate bearing 40 embeds in the groove of balance 8, and is sleeved on the boss of swash plate 4.As a kind of optional embodiment, the outer ring of swashplate bearing 40 and balance are 8 integrally formed, inner ring and swash plate 4 are integrally formed.This swashplate bearing 40 can be tapered roller bearing, thrust-bearing or various combination bearing, with bearing radial force and axial force.
As another kind of mode of execution, as shown in Figure 5 and Figure 6, balance 8 is connected on the housing 1 by crescent moon bearing 82, and swings centered by the axis of crescent moon bearing 82, the whole bracket type supporting structure that forms.Similarly, in orientation shown in Figure 5, the axis of crescent moon bearing 82 is perpendicular to paper, and passes the center of connected element 7, so that the angle of yaw of balance 8 and swash plate 4 and connected element 7 are complementary.
Aforementioned stroking mechanism 80 can be multiple possible parts, such as rotating gudgeon or variable piston etc.Fig. 1 and stroking mechanism 80 shown in Figure 5 are the variable piston, and this variable piston connects balance 8, and the variable piston stretches out under the effect of hydraulic coupling and spring force respectively and retracts.As a kind of mode of execution, during oil-feed, piston stretches out under action of hydraulic force in cavity; And in cavity during oil return, piston is retracted under action of hydraulic force and is resetted.Need to prove that the present invention can also be connected with two variable pistons at balance 8, such as Fig. 1 and shown in Figure 5, the variable piston is installed in respectively up and down two positions, when regulating balance 8 angle of yaw, and up and down two variable pistons concerted action, when one of them stretches out, another retraction.
As another way of example, the present invention includes at least 2 independently housings 1, be provided with a plurality of plunger assemblies 3, swash plate 4, cylinder body 5, thrust plate 6, connected element 7 in each housing 1, the each several part annexation is described with reference to preamble.A main shaft 2 connects each housing 1, thereby forms duplex, multiplex pump or motor, has the advantages such as spatial structure compactness.
In the structure of previous embodiment of the present invention during as swash plate plunger pump, under prime mover effect, drive main spindle 2 is rotated centered by its horizontal axis, and drive comprises that the connected element 7 of first component 71 and second component 72 rotates, first component 71 rotates centered by its horizontal axis, second component 72 rotates centered by its tilt axis, second component 72 drives swash plate 4 and rotates centered by tilt axis, thereby so that plunger assembly 3 moves back and forth in the plunger hole of cylinder body 5, form the volume-variation of hydraulic oil in the cylinder body 5, realize the process of oil suction and force feed, and then realize the conversion from the mechanical energy of prime mover to the hydraulic energy of plunger pump.In aforementioned process, because piston shoes are not set, plunger assembly 3 drives cylinder body 5 and rotates centered by horizontal axis, and whole drive path is: prime mover → first component 71 → second component 72 → swash plate 4 → plunger assembly 3 → cylinder body 5.
In the structure of previous embodiment of the present invention during as the oblique tray type plunger motor, plunger assembly 3 to-and-fro motion under the effect of hydraulic coupling, and drive swash plate 4 and cylinder body 5 rotates, the rotation of swash plate 4 is passed to main shaft 2 after the transmission of connected element 7, drive at last main shaft 2 and rotate and output, and then realize the conversion of the mechanical energy from the hydraulic energy to the piston motor.
Because oil hydraulic pump and oil hydraulic motor can switch in theory mutually, just have the part difference.For structure and the working principle of oblique tray type plunger motor of the present invention, can be with reference to the explanation of this paper to plunger pump.As long as adopted the hydraulic pressure installation of aforementioned structure of the present invention, no matter be swash plate plunger pump and piston motor, all within protection scope of the present invention.
Compare with the inclined disc type or bent axis type axial piston pump of prior art, the invention has the beneficial effects as follows apparent, can comprise at least following some:
1) assembling is good
Cylinder body of the present invention 5 centers offer the cylindricality endoporus, form the hole axle between this cylindricality endoporus and the main shaft 2 and cooperate.For the spline fitted of prior art main shaft 2 and cylinder body 5, reduced the assembling matching relationship, the relative reduce that requires to the machining accuracy of each parts, can more easily a plurality of plunger assemblies 3 be assemblied between swash plate 4 ball-and-sockets and the plunger hole exactly, and can guarantee plunger seal and assembly precision, have assembling good, be easy to the advantage making and implement.
2) total efficiency is high
The present invention has adopted the structure of wobbler 4 and ball pivot plunger, the structural advantages of bent axis type axial piston pump or motor is incorporated in the swash plate plunger pump of the present invention, use ball pivot plunger assembly 3 to replace the plunger piston slippery boots of existing swash plate plunger pump or motor, and sliding friction become rolling friction, reduce frictional loss and oil liquid leakage, improved the total efficiency of pump or motor.
3) lateral force is little
The friction pair of the present invention for forming between plunger and the plunger hole, the lateral force that its plunger bears is more much smaller than existing swash plate plunger pump or motor, thereby the frictional loss that lateral force causes is less, can reduce the requirement to the oil strain precision, so that the impact resistance of pump or motor, oil resistant dirt, limit speed and life-span are improved.
4) can realize coaxial or the axis connection
The present invention is for bent axis type axial piston pump or motor, because spatial structure is compact, and main shaft 2 crosses in housing 1, need can be applied to coaxial transmission or logical driven off by shaft occasion, such as duplex pump etc., thereby forms pump group or groups of motors structure.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a swash plate plunger pump or motor, comprise housing (1), rotationally be arranged at the main shaft (2) on the described housing (1), a plurality of plunger assembly (3), the swash plate (4) that is connected with described plunger assembly (3) first end, the cylinder body (5) that is provided with plunger hole, be arranged at the thrust plate (6) of described cylinder body (5) end, it is characterized in that, also comprise connected element (7), wherein:
Described connected element (7) comprises first component (71) and the second component (72) of relative swing, described first component (71) rotates synchronously in conjunction with described main shaft (2) and with described main shaft (2), described swash plate (4) rotates synchronously in conjunction with described second component (72) and with described second component (72), and the rotation axis of the rotation axis of described main shaft (2) and described swash plate (4) is mutually angle;
The center of described cylinder body (5) offers the cylindricality endoporus, described main shaft (2) stretches into described cylindricality endoporus, and between described main shaft (2) and described cylindricality endoporus, form and cooperate, when main shaft (2) rotated, described cylinder body (5) rotated under the drive of plunger assembly (3).
2. swash plate plunger pump according to claim 1 or motor, it is characterized in that, the first end of described plunger assembly (3) is provided with bulb, described swash plate is provided with ball-and-socket on (4), described bulb is arranged at and forms ball pivot in the ball-and-socket of described swash plate (4) and connect, and also is provided with on the described swash plate (4) for the return plate spacing to described bulb (41).
3. swash plate plunger pump according to claim 2 or motor, it is characterized in that, the second end of described plunger assembly (3) slides and is arranged in the plunger hole of described cylinder body (5), described plunger assembly (3) comprises plunger rod, described plunger rod has cone structure, wherein, be the small end of described cone structure away from an end of described cylinder body (5), an end of contiguous described cylinder body (5) is the large end of described cone structure.
4. swash plate plunger pump according to claim 1 or motor is characterized in that, also comprise balance (8) and stroking mechanism (80), wherein:
Described balance (8) is arranged on the described housing (1) under the driving of described stroking mechanism (80) swingably, and described swash plate (4) connects described balance (8), when described balance (8) swings, and the corresponding adjustment of angle of yaw of described swash plate (4).
5. swash plate plunger pump according to claim 4 or motor, it is characterized in that, connect by swashplate bearing (40) between described swash plate (4) and the described balance (8), described swash plate is provided with boss on (4), described balance is provided with groove on (8), the inner ring of described swashplate bearing (40) connects described boss, and the outer ring of described swashplate bearing (40) connects described groove.
6. swash plate plunger pump according to claim 4 or motor, it is characterized in that, described balance (8) is supported on the described housing (1) by two bearing pins (81), and swings centered by the axis of described two bearing pins (81), the whole gudgeon formula supporting structure that forms.
7. swash plate plunger pump according to claim 4 or motor, it is characterized in that, described balance (8) is connected on the described housing (1) by crescent moon bearing (82), and swings centered by the axis of described crescent moon bearing (82), the whole bracket type supporting structure that forms.
8. swash plate plunger pump according to claim 4 or motor, it is characterized in that, described stroking mechanism (80) is the variable piston, and described variable piston connects described balance (8), and described variable piston stretches out under the effect of hydraulic coupling and spring force respectively and retracts.
9. according to claim 1-8 each described swash plate plunger pump or motor, it is characterized in that, also comprise elastic element (9), described elastic element (9) acts on the described cylinder body (5), is used for the end face of described cylinder body (5) is pressed in described thrust plate (6).
10. according to claim 1-8 each described swash plate plunger pump or motor, it is characterized in that, described connected element (7) is ball pivot, described first component (71) is the inner ring of described ball pivot, described second component (72) is the outer ring of described ball pivot, connects for crowned spline between the inner ring of described ball pivot and the outer ring of described ball pivot.
11. according to claim 1-8 each described swash plate plunger pump or motor, it is characterized in that, described first component (71) is for being provided with the inner ring of concave tracks (70) at outer surface, described second component (72) is for being provided with the outer ring of concave tracks (70) at internal surface, between the concave tracks (70) of described first component (71) and second component (72) spin or slide block are installed, described spin or slide block move with the direction that departs from main-shaft axis in concave tracks (70).
12. according to claim 1-8 each described swash plate plunger pump or motor, it is characterized in that, the formation that is combined as a whole between described first component (71) and the described main shaft (2), and/or the formation that is combined as a whole between described second component (72) and the described swash plate (4).
13. according to claim 1-8 each described swash plate plunger pump or motor, it is characterized in that, comprise at least 2 independently described housings (1), be provided with described a plurality of plunger assembly (3), swash plate (4), cylinder body (5), thrust plate (6), connected element (7) in each housing (1), a main shaft (2) connects each housing (1).
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| CN201210440938.6A CN102926959B (en) | 2012-11-07 | 2012-11-07 | A kind of swash plate plunger pump or motor |
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| CN201210440938.6A CN102926959B (en) | 2012-11-07 | 2012-11-07 | A kind of swash plate plunger pump or motor |
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| CN102926959B CN102926959B (en) | 2016-08-03 |
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|---|---|---|---|---|
| CN105697710A (en) * | 2014-10-27 | 2016-06-22 | 罗伯特·博世有限公司 | Transmission module |
| CN106194888A (en) * | 2016-08-31 | 2016-12-07 | 江苏远业液压机械有限公司 | A kind of novel hydraulic motor cylinder body |
| CN108150474A (en) * | 2017-12-28 | 2018-06-12 | 赛克思液压科技股份有限公司 | A kind of adjustable multi-joint volume adjustable hydraulic pump of flow |
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| CN113878352A (en) * | 2021-11-12 | 2022-01-04 | 浙江大学台州研究院 | Automatic assembling production line for plunger pump cylinder body |
| CN114810533A (en) * | 2022-03-30 | 2022-07-29 | 杭州力龙液压有限公司 | Control valve group, tool, hydraulic pump, control valve group assembling method and engineering machinery |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH303022A (en) * | 1951-03-22 | 1954-11-15 | Ebert Heinrich Ing Dr | Hydraulic axial piston machine unit. |
| CN85101345A (en) * | 1984-11-12 | 1986-05-10 | 岛津制作所株式会社 | Crankshaft-type axial piston pump or motor |
| WO2007104257A1 (en) * | 2006-03-14 | 2007-09-20 | Zhu Raphael | An axial plunger pump or motor |
| CN101230872A (en) * | 2005-06-02 | 2008-07-30 | 株式会社电装 | Compressor and constant speed joint |
| CN201209542Y (en) * | 2008-05-15 | 2009-03-18 | 上海电气液压气动有限公司 | Plunger piston |
| EP2050957A1 (en) * | 2007-10-15 | 2009-04-22 | Linde Material Holding GmbH | Axial piston machine |
| CN203067204U (en) * | 2012-11-07 | 2013-07-17 | 三一重工股份有限公司 | Swashplate type plunger pump and swashplate type plunger motor |
-
2012
- 2012-11-07 CN CN201210440938.6A patent/CN102926959B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH303022A (en) * | 1951-03-22 | 1954-11-15 | Ebert Heinrich Ing Dr | Hydraulic axial piston machine unit. |
| CN85101345A (en) * | 1984-11-12 | 1986-05-10 | 岛津制作所株式会社 | Crankshaft-type axial piston pump or motor |
| CN101230872A (en) * | 2005-06-02 | 2008-07-30 | 株式会社电装 | Compressor and constant speed joint |
| WO2007104257A1 (en) * | 2006-03-14 | 2007-09-20 | Zhu Raphael | An axial plunger pump or motor |
| EP2050957A1 (en) * | 2007-10-15 | 2009-04-22 | Linde Material Holding GmbH | Axial piston machine |
| CN201209542Y (en) * | 2008-05-15 | 2009-03-18 | 上海电气液压气动有限公司 | Plunger piston |
| CN203067204U (en) * | 2012-11-07 | 2013-07-17 | 三一重工股份有限公司 | Swashplate type plunger pump and swashplate type plunger motor |
Cited By (22)
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|---|---|---|---|---|
| CN105697710A (en) * | 2014-10-27 | 2016-06-22 | 罗伯特·博世有限公司 | Transmission module |
| CN106194888A (en) * | 2016-08-31 | 2016-12-07 | 江苏远业液压机械有限公司 | A kind of novel hydraulic motor cylinder body |
| CN109578235A (en) * | 2017-09-29 | 2019-04-05 | 四川省宜宾普什驱动有限责任公司 | A kind of high-precision, wear-resistant, long-life inclined disc type axial variable plunger pump |
| CN111212977A (en) * | 2017-10-20 | 2020-05-29 | Ifp新能源公司 | Double-disc rotary cylinder type pump |
| CN108150474A (en) * | 2017-12-28 | 2018-06-12 | 赛克思液压科技股份有限公司 | A kind of adjustable multi-joint volume adjustable hydraulic pump of flow |
| CN110067720B (en) * | 2018-05-22 | 2024-05-31 | 上海强田驱动技术有限公司 | Bearing support slide plate pair structure and swash plate type plunger pump or motor comprising same |
| CN110067720A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of bearing bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure |
| CN110067721A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of hydrostatic driving structure and bent axis type axial piston pump or motor comprising the structure |
| CN110067741A (en) * | 2018-09-21 | 2019-07-30 | 钟彪 | A kind of return mechanism and swash plate plunger pump or motor comprising the structure |
| CN110067741B (en) * | 2018-09-21 | 2024-05-03 | 上海强田驱动技术有限公司 | Return mechanism and swash plate type plunger pump or motor comprising same |
| CN110067742A (en) * | 2018-09-21 | 2019-07-30 | 钟彪 | A kind of interior bearing sliding plate pair and swash plate plunger pump or motor comprising the structure |
| CN109519352B (en) * | 2018-10-22 | 2020-08-28 | 徐州重型机械有限公司 | Plunger pump and engineering machinery |
| CN109519352A (en) * | 2018-10-22 | 2019-03-26 | 徐州重型机械有限公司 | Plunger pump and engineering machinery |
| CN110359962A (en) * | 2019-07-17 | 2019-10-22 | 顾新钿 | A kind of air motor |
| CN111765230A (en) * | 2020-06-28 | 2020-10-13 | 重庆交通大学绿色航空技术研究院 | Axial piston driving device with shaft cooperating with wobble plate |
| CN112032009A (en) * | 2020-09-17 | 2020-12-04 | 上海交通大学 | Valve flow distribution axial plunger pump |
| CN113878352B (en) * | 2021-11-12 | 2022-07-26 | 浙江大学台州研究院 | Automatic assembling production line for plunger pump cylinder body |
| WO2023082421A1 (en) * | 2021-11-12 | 2023-05-19 | 浙江大学台州研究院 | Automatic assembly production line for cylinder of plunger pump |
| CN113878352A (en) * | 2021-11-12 | 2022-01-04 | 浙江大学台州研究院 | Automatic assembling production line for plunger pump cylinder body |
| CN114810533A (en) * | 2022-03-30 | 2022-07-29 | 杭州力龙液压有限公司 | Control valve group, tool, hydraulic pump, control valve group assembling method and engineering machinery |
| CN114962201A (en) * | 2022-05-23 | 2022-08-30 | 中航力源液压股份有限公司 | Compact type aviation hydraulic variable pump swash plate variable mechanism and method |
| CN114962201B (en) * | 2022-05-23 | 2023-08-08 | 中航力源液压股份有限公司 | Compact type aviation hydraulic variable pump swash plate variable mechanism and method |
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