阅读说明：本技术 音圈电机直线驱动轴向柱塞泵 (Voice coil motor linear drives axial plunger pump ) 是由 张增猛 吴鑫 弓永军 于 2019-09-29 设计创作，主要内容包括：本发明涉及液压柱塞泵技术领域,尤其涉及采用音圈电机直线驱动的轴向柱塞泵。本发明是由两组对称设置的音圈电机A和柱塞泵单元A与音圈电机B和柱塞泵单元B通过管路相连接；音圈电机A和柱塞泵单元A通过螺栓相连接,柱塞泵单元A的一体式柱塞通过连杆与音圈电机A的螺纹杆通过销相连接；音圈电机B和柱塞泵单元B通过螺栓相连接,柱塞泵单元B的一体式柱塞通过连杆与音圈电机B的螺纹杆通过销相连接。柱塞泵单元A和柱塞泵单元B通过管路相连接,同时柱塞泵单元A和柱塞泵单元B通过管路与外部相通。本发明的技术方案解决了现有技术中的结构复杂、摩擦副较多、整体结构过大等问题。(The present invention relates to hydraulic plunger pump technical fields, more particularly to using the axial plunger pump of voice coil motor linear drives.The present invention is connected with voice coil motor B and plunger pump unit B by pipeline by two groups of symmetrically arranged voice coil motor A and plunger pump unit A；Voice coil motor A is connected with plunger pump unit A by bolt, and the integral plunger of plunger pump unit A is connected with the threaded rod of voice coil motor A by pin by connecting rod；Voice coil motor B is connected with plunger pump unit B by bolt, and the integral plunger of plunger pump unit B is connected with the threaded rod of voice coil motor B by pin by connecting rod.Plunger pump unit A is connected with plunger pump unit B by pipeline, while plunger pump unit A and plunger pump unit B are communicated by pipeline with outside.Technical solution of the present invention solves the problems such as structure is complicated, friction is secondary more, overall structure is excessive in the prior art.)

1. a kind of voice coil motor linear drives axial plunger pump, which is characterized in that the voice coil motor linear drives axial columns Plug pump is to pass through pipeline by two groups of symmetrically arranged voice coil motor A and plunger pump unit A and voice coil motor B and plunger pump unit B It is connected；

The voice coil motor A and voice coil motor B structure identical include: fixed shell (1), voice coil motor stator (2), voice coil Electric mover (3), threaded rod (4), connecting rod (6)；Voice coil motor stator (2) supports voice coil motor mover (3), and passes through screw B (36) the fixed inside loaded on fixed shell (1)；One end of threaded rod (4) is connected through a screw thread with voice coil motor mover (3), separately One end is connected with the one end of connecting rod (6) by screw thread；

The plunger pump unit A identical as plunger pump unit B structure includes: plunger rod (8), drive end bearing bracket (9), sealing ring A (10), rear end cap (19), spool (23) and the pump housing (25)；Spool (23) and plunger rod (8) are fixedly connected to form integral plunger, It is encased in the pump housing (25)；Drive end bearing bracket (9) and rear end cap (19) are loaded on the rear and front end of the pump housing (25) by screw A (21), and It is sealed by sealing ring A (10) and sealing ring B (18)；The both ends of integral plunger are by drive end bearing bracket (9) and rear end cap (19) Through-hole be pierced by, and be sealed by sealing ring D (26) and sealing ring C (20)；

The voice coil motor A is connected with plunger pump unit A by bolt (27), and the integral plunger of plunger pump unit A is logical It crosses connecting rod (6) and is connected with the threaded rod (4) of voice coil motor A by pin (7)；

The voice coil motor B is connected with plunger pump unit B by bolt (27), and the integral plunger of plunger pump unit B is logical It crosses connecting rod (6) and is connected with the threaded rod (4) of voice coil motor B by pin (7).

The plunger pump unit A is connected with plunger pump unit B by pipeline, while it is logical to fill in pump unit A and plunger pump unit B Pipeline is crossed to communicate with outside.

2. voice coil motor linear drives axial plunger pump according to claim 1, which is characterized in that the spool (23) For 3-position 4-way slide valve, it is provided with 3 land on spool (23), respectively positioned at the narrow land in spool (23) middle position and right Claim the wide land for being set to narrow land two sides.

3. voice coil motor linear drives axial plunger pump according to claim 1, which is characterized in that the plunger pump list It is provided with I A of reversal valve valve port (12) on the pump housing (25) of first A, II A of reversal valve valve port (13), III A of reversal valve valve port (14), changes To IV A of valve valve port (15) and V A of reversal valve valve port (16) and I A of suction/exhousting hole (11) and II A of suction/exhousting hole (17) of two sides；Spool (23) it is packed into the pump housing (25), the inside division of valve body (25) is intermediate reversal valve valve by the wide land at both ends on spool (23) The suction working chamber (22) of chamber (24) and the left and right sides；Intermediate reversal valve valve chamber (24) and above-mentioned five reversal valves valve port phase It is logical；I A of suction/exhousting hole (11) and II A of suction/exhousting hole (17) is communicated with two suction working chambers (22) of plunger pump unit B respectively.

4. voice coil motor linear drives axial plunger pump according to claim 1, which is characterized in that the plunger pump list It is provided with I B of reversal valve valve port (30) on the pump housing (25) of first B, II B of reversal valve valve port (31), III B of reversal valve valve port (32), changes To IV B of valve valve port (33) and V B of reversal valve valve port (34) and I B of suction/exhousting hole (29) and II B of suction/exhousting hole (35) of two sides；Spool (23) it is packed into the pump housing (25), the inside division of valve body (25) is intermediate reversal valve valve by the wide land at both ends on spool (23) The suction working chamber (22) of chamber (24) and the left and right sides；Intermediate reversal valve valve chamber (24) and above-mentioned five reversal valves valve port phase It is logical；I B of suction/exhousting hole (29) and II B of suction/exhousting hole (35) is communicated with two suction working chambers (22) of plunger pump unit A respectively.

5. voice coil motor linear drives axial plunger pump according to claim 3 or 4, which is characterized in that the plunger I A (11) of pump unit A suction/exhousting hole and II B of reversal valve valve port (31) passes through pipeline connection, II A of suction/exhousting hole (17) and reversal valve valve port IV B (33) is by pipeline connection, so that two suction working chambers (22) of plunger pump unit A pass through pipeline and plunger pump unit B Reversal valve valve chamber (24) be connected；I B of suction/exhousting hole (29) and II A of reversal valve valve port (13) passes through pipeline connection, II B of suction/exhousting hole (35) pass through pipeline connection with IV A of reversal valve valve port (15)；So that two suction working chambers (22) of plunger pump unit B pass through pipe Road is connected with the reversal valve valve chamber (24) of plunger pump unit A.

6. voice coil motor linear drives axial plunger pump according to claim 3 or 4, which is characterized in that the plunger I A of reversal valve valve port (12), V A of reversal valve valve port (16) and III B of reversal valve valve port (32) of pump unit A passes through pipeline and first Suction/exhousting hole (38) is connected；III A of reversal valve valve port (14), I B of reversal valve valve port (30) and V B of reversal valve valve port (34) pass through pipe Road is connected with the second suction/exhousting hole (39).

7. voice coil motor linear drives axial plunger pump according to claim 1, which is characterized in that the fixation shell (1) annular groove (37) are provided on side wall；The power supply line (28) that voice coil motor mover (3) is connect with external power supply is worn by annular groove (37) Cross fixed shell (1)；Motor lines (28) move in annular groove (37) while voice coil motor mover (3) moves back and forth.

8. voice coil motor linear drives axial plunger pump according to claim 1, which is characterized in that the threaded rod (4) nut (5) is respectively tightened at both ends, is fastened to the voice coil motor mover (3) and connecting rod (6) of both ends connection.

Technical field

The present invention relates to hydraulic plunger pump technical fields, more particularly to using the axial plunger of voice coil motor linear drives Pump.

Background technique

Hydraulic pump is the element completing mechanical energy in hydraulic system and converting to hydraulic energy, and hydraulic pump is widely used in lifting The fields such as Transport Machinery, metallurgy, ship, chemical industry.Hydraulic pump primary structure form has plunger pump, vane pump, three kinds of gear pump.

The axial plunger pump principle of traditional rotating electric machine driving is that rotating electric machine is rotated by transmission shaft drive cylinder body Movement, plunger group are done reciprocating linear motion relative to cylinder body because of the oblique relation of plane of swash plate, are formed by plunger with cylinder holes close The volume change of the cavity of envelope is oily to carry out suction, and valve plate carries out flow to oil liquid, and the plunger pump of this structure has reversible Property, the advantages that easy of integrationization can arbitrarily change flow and direction, and variable dynamic performance is good, but there is also structure is complicated, friction The problems such as.The component structural of the reciprocating pump of rotating electric machine driving is more, for example typical component structural has variable oblique Disk, plunger group, valve plate and cylinder body, return mechanism etc..In inclined disc type assigning plunger pump, that there is the frictions of swash plate-piston shoes is secondary, Plunger-cylinder holes friction is secondary and cylinder body-valve plate three main frictions are secondary, friction vice division chief's contact stress is complicated, working condition is poor, Poor lubrication, friction loss and thus bring leak the problems such as may result in pump whole efficiency it is lower in addition lose Effect.In valve current allocating type plunger pump, plunger motion causes the variation of plunger cavity pressure, is driven by the variation of plunger cavity pressure unidirectional The opening and closing of valve, when plunger motion frequency is no more than the resonance frequency of check valve itself, pump can normally complete suction work, but It is after plunger motion frequency is more than the resonance frequency of inner elements of check valve, inner elements of check valve response has lag, and then even makes The disabler of pump.

With the development that electromagnetism, material, control are learned, occur the integrated electromagnetic direct-drive formula of motor and the pump housing is hydraulic Plunger pump.Voice coil motor can be connect by voice coil motor direct-drive type plunger pump with plunger to be filled without any intermediate conversion It sets, simplifies plunger pump structure, eliminate the lateral force of plunger and cylinder body, rub due to only existing plunger-cylinder holes this pair of of key Pair is wiped, plunger pump friction loss is reduced, improves the service life of plunger pump, furthermore voice coil motor response is fast, acceleration is big The features such as be all conducive to improve plunger pump dynamic response capability.But existing linear motor direct-driven formula plunger pump (such as attached drawing 2) In the presence of: since plunger and valve body structure are too long, cause to process the problems such as inconvenient and manufacturing procedure is complicated.

For it is above-mentioned the problems of in the prior art, a kind of novel voice coil motor linear drives of researching and designing are axial Plunger pump, so that it is very necessary for overcoming the problems of in the prior art.

Summary of the invention

The technical problems such as structure is complicated, friction pair is more, overall structure is excessive, this hair are proposed according to the above-mentioned prior art It is bright to provide a kind of voice coil motor linear drives axial plunger pump, to solve above-mentioned problems of the prior art.

The technological means that the present invention uses is as follows:

A kind of voice coil motor linear drives axial plunger pump, which is characterized in that the voice coil motor linear drives are axial Plunger pump is to pass through pipe by two groups of symmetrically arranged voice coil motor A and plunger pump unit A and voice coil motor B and plunger pump unit B Road is connected；

Voice coil motor A and voice coil motor B structure identical include: that fixed shell, voice coil motor stator, voice coil motor are dynamic Son, threaded rod, connecting rod；Voice coil motor stator supports voice coil motor mover, and fixed loaded on the interior of fixed shell by screw B Portion；One end of threaded rod is connected through a screw thread with voice coil motor mover, and the other end is connected with one end of connecting rod；Plunger pump unit A identical as plunger pump unit B structure includes: plunger rod, drive end bearing bracket, sealing ring A, rear end cap, spool and the pump housing；Spool and column Stopper rod is fixedly connected to form integral plunger, is encased in the pump housing；Drive end bearing bracket and rear end cap are loaded on the front and back of the pump housing by screw A Both ends, and be sealed by sealing ring A and sealing ring B；It is worn by the through-hole of drive end bearing bracket and rear end cap at the both ends of integral plunger Out, and by sealing ring D and sealing ring C it is sealed；Voice coil motor A is connected with plunger pump unit A by bolt, plunger pump The integral plunger of unit A is connected with the threaded rod of voice coil motor A by pin by connecting rod；Voice coil motor B and plunger pump list First B is connected by bolt, and the integral plunger of plunger pump unit B passes through pin phase by the threaded rod of connecting rod and voice coil motor B Connection.Plunger pump unit A is connected with plunger pump unit B by pipeline, while filling in pump unit A and plunger pump unit B passes through pipe Road is communicated with outside.

Further, spool is 3-position 4-way slide valve, is provided with 3 land on spool, is respectively located at spool interposition The narrow land set and the wide land for being symmetrically disposed on narrow land two sides.

Further, I A of reversal valve valve port, II A of reversal valve valve port, reversal valve valve are provided on the pump housing of plunger pump unit A III A of mouth, IV A of reversal valve valve port and V A of reversal valve valve port and II A of I A of suction/exhousting hole and suction/exhousting hole of two sides；Spool is packed into the pump housing Interior, the wide land at both ends works the suction that the inside division of valve body is intermediate reversal valve valve chamber and the left and right sides on spool Chamber；Intermediate reversal valve valve chamber is communicated with above-mentioned five reversal valve valve ports；I A of suction/exhousting hole and II A of suction/exhousting hole respectively with two suctions Working chamber communicates.

Further, I B of reversal valve valve port, II B of reversal valve valve port, reversal valve valve are provided on the pump housing of plunger pump unit B III B of mouth, IV B of reversal valve valve port and V B of reversal valve valve port and II B of I B of suction/exhousting hole and suction/exhousting hole of two sides；Spool is packed into the pump housing Interior, the wide land at both ends works the suction that the inside division of valve body is intermediate reversal valve valve chamber and the left and right sides on spool Chamber；Intermediate reversal valve valve chamber is communicated with above-mentioned five reversal valve valve ports；I B of suction/exhousting hole and II B of suction/exhousting hole respectively with two suctions Working chamber communicates.

Further, I A of suction/exhousting hole and II B of reversal valve valve port of plunger pump unit A be by pipeline connection, II A of suction/exhousting hole with IV B of reversal valve valve port is by pipeline connection, so that two suction working chambers of plunger pump unit A pass through pipeline and plunger pump unit The reversal valve valve chamber of B is connected；I B of suction/exhousting hole and II A of reversal valve valve port passes through pipeline connection, II B of suction/exhousting hole and reversal valve valve port IV A passes through pipeline connection；So that two suction working chambers of plunger pump unit B pass through the reversal valve of pipeline and plunger pump unit A Valve chamber is connected.

Further, I A of reversal valve valve port of plunger pump unit A, V A of reversal valve valve port and III B of reversal valve valve port pass through pipe Road is connected with the first suction/exhousting hole；III A of reversal valve valve port, I B of reversal valve valve port and V B of reversal valve valve port pass through pipeline and second Suction/exhousting hole is connected.

Further, annular groove is provided on the side wall of fixed shell；The power supply line that voice coil motor mover is connect with external power supply Fixed shell is passed through by annular groove；Motor lines move in annular groove while voice coil motor mover moves back and forth.

Further, a nut is respectively tightened at the both ends of threaded rod, to both ends connection voice coil motor mover and connecting rod into Row fastening.

In voice coil motor linear drives axial plunger pump provided by the invention, voice coil motor driving plunger is back and forth transported It is dynamic, suction oil is carried out at plunger both ends, the reversal valve of spool and pump housing composition carries out flow to oil liquid among plunger.With electric rotating The plunger pump of machine driving is compared, the present invention has the advantage that:

1, voice coil motor linear drives axial plunger pump provided by the invention does not rotate-transform linear motion structure, letter Structure is changed, only plunger-cylinder body friction pair, frictional dissipation is small, plunger pump overall structure handling ease, service life It is long；

2, voice coil motor linear drives axial plunger pump provided by the invention is moved back and forth by the mover to voice coil motor Amplitude, frequency and phase be adjusted, and overall output uninterrupted and the direction of plunger pump is adjusted, and control strategy is simple, Flexibly；

3, voice coil motor linear drives axial plunger pump provided by the invention, piston reciprocation movement had both completed suction oil, The flow to oil liquid is also completed simultaneously, and without flat valve or valve plate, overall structure is simple；

4, voice coil motor linear drives axial plunger pump provided by the invention, voice coil motor response is fast, and acceleration is big, therefore It is short to mover reciprocating motion regulating time, improve the dynamic characteristic that the flow of plunger pump is adjusted；

5, voice coil motor linear drives axial plunger pump provided by the invention, with existing linear motor direct-driven formula plunger pump phase It is smaller than reducing plungers length, body length, overall volume；

6, voice coil motor linear drives axial plunger pump provided by the invention, with existing linear motor direct-driven formula plunger pump phase Than plunger, valve body processing is more convenient；

7, voice coil motor linear drives axial plunger pump provided by the invention, with existing linear motor direct-driven formula plunger pump phase It is installed on valve body than motor, integrated level is higher.

To sum up, it applies the technical scheme of the present invention and solves that in the prior art structure is complicated, easy to wear, overall structure mistake Equal problem greatly.

The present invention can be widely popularized in fields such as hydraulic planger pumps based on the above reasons.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is schematic structural view of the invention；

Fig. 2 is the structure chart of the single voice coil motor linear drives axial plunger pump of the present invention；

Fig. 3 is voice coil motor A mover displacement drive signal schematic representation in the present invention；

Fig. 4 is voice coil motor B mover displacement drive signal schematic representation in the present invention；

Schematic illustration when Fig. 5 is plunger pump working condition 1 provided in an embodiment of the present invention；

Schematic illustration when Fig. 6 is plunger pump working condition 2 provided in an embodiment of the present invention；

Schematic illustration when Fig. 7 is plunger pump working condition 3 provided in an embodiment of the present invention；

Schematic illustration when Fig. 8 is plunger pump working condition 4 provided in an embodiment of the present invention；

Fig. 9 is existing linear motor direct-driven formula plunger pump structure schematic diagram.

In figure: 1, fixed shell 2, voice coil motor stator 3, voice coil motor mover 4, threaded rod 5, nut 6, connecting rod 7, pin 8, plunger rod 9, drive end bearing bracket 10, sealing ring 11, I A 12 of suction/exhousting hole, I A 13 of reversal valve valve port, II A of reversal valve valve port 14, III A 15 of reversal valve valve port, IV A 16 of reversal valve valve port, V A 17 of reversal valve valve port, II A 18 of suction/exhousting hole, sealing ring B 19, rear end cap 20, sealing ring C 21, screw A 22, suction working chamber 23, spool 24, reversal valve valve chamber 25, the pump housing 26, Sealing ring D 27, it bolt 28, motor lines 29, I B 30 of suction/exhousting hole, I B 31 of reversal valve valve port, II B 32 of reversal valve valve port, changes To III B 33 of valve valve port, IV B 34 of reversal valve valve port, V B 35 of reversal valve valve port, II B 36 of suction/exhousting hole, screw B 37, annular groove 38, the first suction/exhousting hole 39, the second suction/exhousting hole.

Specific embodiment

It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only It is only a part of the embodiment of the present invention, instead of all the embodiments.It is real to the description of at least one exemplary embodiment below It is merely illustrative on border, never as to the present invention and its application or any restrictions used.Based on the reality in the present invention Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to In the scope of protection of the invention.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be clear that for ease of description, each portion shown in attached drawing The size divided not is to draw according to actual proportionate relationship.Technology known for person of ordinary skill in the relevant, side Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached It does not need that it is further discussed in figure.

In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical, Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage Solution is limiting the scope of the invention: the noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this The limitation of invention protection scope.

As shown in Figure 1, the present invention provides a kind of voice coil motor linear drives axial plunger pumps, comprising: voice coil motor A and Voice coil motor B, plunger pump unit A and plunger pump unit B, voice coil motor are moving-coil type voice coil motor, plunger pump unit A's and B Structure is identical, and in plunger pump unit, plunger is both the spool 23 that suction component includes reversal valve again.

Voice coil motor includes: 3 two parts of voice coil motor stator 2 and voice coil motor mover；Plunger pump unit A and plunger pump list First B includes: drive end bearing bracket 9, sealing ring A10, plunger rod 8, spool 23, the pump housing 25, sealing ring C20, sealing ring D26, sealing ring B18, suction working chamber 22 and reversal valve valve chamber 24.

Voice coil motor linear drives axis stretches in plunger pump, the voice coil motor stator 3 of voice coil motor and one end of threaded rod 4 It is connected by screw thread, the other end of threaded rod 4 is connected with 6 one end of connecting rod, with two nuts 5 in 4 left and right ends of threaded rod It tightens, 6 other end of connecting rod is a pin hole, is connect connecting rod 6 with plunger rod 8 by straight pin 7, and spool 23 and plunger rod 8 are solid Surely the formula that is connected to form one plunger, plunger do reciprocating linear motion in the pump housing, the top setting of the suction working chamber 22 on the left side There is I A11 of suction/exhousting hole, the top of the suction working chamber 22 on the right is provided with II A17 of suction/exhousting hole, is formed between spool 23 and the pump housing 25 Reversal valve valve chamber 24 is provided with I A12 of reversal valve valve port, II A13 of reversal valve valve port, reversal valve valve port III at the top of valve chamber 24 A14, IV A15 of reversal valve valve port, V A16 of reversal valve valve port；24, five reversal valve valve ports of reversal valve valve chamber and spool 23 constitute One continuously adjustable 3-position 4-way reversing slide valve is separately installed with drive end bearing bracket 9 and rear end cap 19, drive end bearing bracket at 25 both ends of the pump housing It is sealed between 9 and the pump housing 25 by sealing ring A10, is sealed between rear end cap 19 and the pump housing 25 by sealing ring B18, It is sealed between drive end bearing bracket 9 and plunger rod 8 by sealing ring D26, passes through sealing ring C20 between rear end cap 19 and plunger rod 8 It is sealed.

I A11 of suction/exhousting hole in plunger pump unit A is connected with II B31 of reversal valve valve port in plunger pump unit B, plunger II A17 of suction/exhousting hole is connected with IV B33 of reversal valve valve port in plunger pump unit B in pump unit A, changing in plunger pump unit A It is connected to II A13 of valve valve port with I B29 of suction/exhousting hole in plunger pump unit B, IV A15 of reversal valve valve port in plunger pump unit A It is connected with II B35 of suction/exhousting hole in plunger pump unit B, I A12 of reversal valve valve port in the first suction/exhousting hole and plunger pump unit A, III B32 of reversal valve valve port is connected in V A16 of reversal valve valve port and plunger pump unit B in plunger pump unit A, and second inhales Arrange mouth and III A14 of reversal valve valve port in plunger pump unit A, I B30 of reversal valve valve port in plunger pump unit B and plunger pump V B34 of reversal valve valve port in unit B is connected, and passes through screw between a side end face of voice coil motor stator 2 and fixed shell 1 B36 is attached, and annular groove 37, motor while voice coil motor mover 3 moves back and forth are provided on fixed 1 outside periphery of shell Line 28 moves in annular groove 37, is attached between fixed shell 1 and the pump housing 25 by bolt 27.

The mover 3 of voice coil motor drives the piston reciprocation movement of plunger pump, while suction is completed in piston reciprocation movement, three Position four port valve also is carrying out switching and is flowing to oil liquid to carry out change, in pilot plunger pump unit A and plunger pump unit B Voice coil motor mover displacement drive signal, the flow of pump can also change correspondingly.

The mover displacement drive signal for defining plunger pump unit A is X1, defines the mover displacement drive letter of plunger pump unit B Number it is X2, is to the right displacement signal X1, X2 in displacement drive signal X1, X2 zero when change-over valve core 23 be in middle position, Fig. 1 Positive direction, mover displacement drive signal is as shown in Figure 3, Figure 4, the displacement signal period be T.

According to Fig. 3, mover displacement drive signal shown in Fig. 4, plunger pump is there are four types of working condition, when (1) 0~1/4T, X1 > 0 and X2 > 0；When (2) 1/4~1/2T, X1>0 and X2<0；When (3) 1/2~3/4T, X1 < 0 and X2 < 0；When (4) 3/4~1T, X1<0 and X2>0.As 1/4T, 1/2T, 3/4T, T, flat valve is in middle position state in plunger pump unit A or plunger pump unit B, State when being at this time reversal valve switching moment, the i.e. four working condition transition in front, to the shadow of the overall output flow of pump Sound is very little, therefore does not discuss.

As 0~1/4T, when X1 > 0 and when X2 > 0 such as Fig. 5 is plunger pump working condition 1 provided in an embodiment of the present invention Schematic diagram, II A13 of reversal valve valve port is connected with III A14 of reversal valve valve port in plunger pump unit A, commutates in plunger pump unit A IV A15 of valve valve port is connected with V A16 of reversal valve valve port, II B31 of reversal valve valve port, reversal valve valve port III in plunger pump unit B B32 is connected, and IV B33 of reversal valve valve port is connected with V B34 of reversal valve valve port in plunger pump unit B, suction working chamber 24 with First suction/exhousting hole is connected oil circuit are as follows: I A11- reversal valve valve port of suction/exhousting hole, II B31- reversal valve valve port, III the first suction/exhousting hole of B32- 38, II B35- reversal valve valve port of suction/exhousting hole, IV A15- reversal valve valve port, V the first suction/exhousting hole of A16- 38, suction working chamber 24 and The oil circuit that two suction/exhousting holes 39 are connected are as follows: I B29- reversal valve valve port of suction/exhousting hole, II A13- reversal valve valve port, III the second suction of A14- Mouth 39, II A17- reversal valve valve port of suction/exhousting hole, IV B33- reversal valve valve port, V the second suction/exhousting hole of B34- 39, by mover displacement drive Signal is as shown in Figure 3, Figure 4, available in 0~1/4T, and plunger moves right in plunger pump unit A, in plunger pump unit B Plunger moves downward, and the suction working chamber volume being connected with II A17 of suction/exhousting hole and I B29 of suction/exhousting hole constantly reduces simultaneously constantly outward Oil extraction, the second suction/exhousting hole 39 is discharge state known to oil circuit connection situation, is connected with I A11 of suction/exhousting hole and II B35 of suction/exhousting hole Suction working chamber volume constantly increase and inside oil suction, the first suction/exhousting hole 38 known to oil circuit connection situation is suction condition.

As 1/4~1/2T, when X1>0 and when X2<0 such as Fig. 6 is plunger pump working condition 2 provided in an embodiment of the present invention Schematic diagram, II A13 of reversal valve valve port, III A14 of reversal valve valve port are connected in plunger pump unit A, commutate in plunger pump unit A IV A15 of valve valve port is connected with V A16 of reversal valve valve port, II B31 of reversal valve valve port, reversal valve valve port I in plunger pump unit B B30 is connected, and IV B33 of reversal valve valve port is connected with III B32 of reversal valve valve port in plunger pump unit B, suction working chamber 22 with First suction/exhousting hole 38 is connected oil circuit are as follows: II A17- reversal valve valve port of suction/exhousting hole, IV B33- reversal valve valve port, III the first suction of B32- Mouthful 38, II B35- reversal valve valve port of suction/exhousting hole, IV A15- reversal valve valve port, V the first suction/exhousting hole of A16- 38, suction working chamber 22 with The oil circuit that second suction/exhousting hole 39 is connected are as follows: I B29- reversal valve valve port of suction/exhousting hole, II A13- reversal valve valve port, III A14- second inhales Mouth 39, I A11- reversal valve valve port of suction/exhousting hole, II 31- reversal valve valve port, I the second suction/exhousting hole of 30- 39 are arranged, is believed by mover displacement drive Number as shown in figure 3, available in 1/4~1/2T, plunger is moved downward in plunger pump unit A, plunger in plunger pump unit B It moves downward, suction 22 cavity volumes of work being connected with I A11 of suction/exhousting hole and I B29 of suction/exhousting hole constantly reduce and constantly arrange outward Oil, the second suction/exhousting hole 39 is discharge state known to oil circuit connection situation, is connected with II A17 of suction/exhousting hole and II B35 of suction/exhousting hole Suction working chamber volume constantly increase and inside oil suction, the first suction/exhousting hole known to oil circuit connection situation is suction condition.

As 1/2~3/4T, when X1 < 0 and when X2 < 0 such as Fig. 7 is plunger pump working condition 3 provided in an embodiment of the present invention Schematic diagram, II A13 of reversal valve valve port, I A12 of reversal valve valve port are connected in plunger pump unit A, commutate in plunger pump unit A IV A15 of valve valve port is connected with III A14 of reversal valve valve port, II B31 of reversal valve valve port, reversal valve valve port I in plunger pump unit B B30 is connected, and IV B33 of reversal valve valve port is connected with III B32 of reversal valve valve port in plunger pump unit B, suction working chamber 22 with First suction/exhousting hole 38 is connected oil circuit are as follows: II A17- reversal valve valve port of suction/exhousting hole, IV B33- reversal valve valve port, III the first suction of B32- Mouthful 38, I B29- reversal valve valve port of suction/exhousting hole, II A13- reversal valve valve port, I the first suction/exhousting hole of A12- 38, suction working chamber 22 and the The oil circuit that two suction/exhousting holes 39 are connected are as follows: II B35- reversal valve valve port of suction/exhousting hole, IV A15- reversal valve valve port, III the second suction of A14- Mouth 39, I A11- reversal valve valve port of suction/exhousting hole, II B31- reversal valve valve port, I the second suction/exhousting hole of B30- 39, are believed by mover displacement drive Number as shown in figure 3, available in 1/2~3/4T, plunger is moved downward in plunger pump unit A, plunger in plunger pump unit B It moving right, the suction working chamber volume being connected with I A11 of suction/exhousting hole and II B35 of suction/exhousting hole constantly reduces and constantly outside oil extraction, The second suction/exhousting hole 39 known to oil circuit connection situation is discharge state, the suction being connected with II A17 of suction/exhousting hole and I B29 of suction/exhousting hole Row's working chamber volume constantly increases and inside oil suction, and the first suction/exhousting hole 38 known to oil circuit connection situation is suction condition.

As 3/4~1T, when X1<0 and X2>0, when such as Fig. 8 being plunger pump working condition 4 provided in an embodiment of the present invention Schematic diagram, II A13 of reversal valve valve port, I A12 of reversal valve valve port are connected in plunger pump unit A, reversal valve in plunger pump unit A IV A15 of valve port is connected with III A14 of reversal valve valve port, II B31 of reversal valve valve port, III B32 of reversal valve valve port in plunger pump unit B It is connected, IV B33 of reversal valve valve port is connected with V B34 of reversal valve valve port in plunger pump unit B, suction working chamber 22 and first Suction/exhousting hole 38 is connected oil circuit are as follows: I A11- reversal valve valve port of suction/exhousting hole, II B31- reversal valve valve port, III the first suction/exhousting hole of B32- 38, I B29- reversal valve valve port of suction/exhousting hole, II A13- reversal valve valve port, I the first suction/exhousting hole of A12- 38, suction working chamber 22 and the second suction The oil circuits that mouth 39 is connected are as follows: II B35- reversal valve valve port of suction/exhousting hole, IV A15- reversal valve valve port, III the second suction/exhousting hole of A14- 39, II A17- reversal valve valve port of suction/exhousting hole, IV B33- reversal valve valve port, V the second suction/exhousting hole of B34- 39, such as by mover displacement drive signal Available in 3/4~1T shown in Fig. 3, plunger moves right in plunger pump unit A, and plunger is transported to the right in plunger pump unit B Dynamic, the suction working chamber volume being connected with II A17 of suction/exhousting hole and II B35 of suction/exhousting hole constantly reduces and constantly outside oil extraction, by oil Second suction/exhousting hole 39 known to the connection of road is discharge state, the suction work being connected with I A11 of suction/exhousting hole and I B29 of suction/exhousting hole Cavity volume constantly increases and inside oil suction, and the first suction/exhousting hole 38 known to oil circuit connection situation is suction condition.

In voice coil motor linear drives axial plunger pump of the invention, two voice coil motor mover displacement drive letters are being kept Number amplitude, frequency difference it is equal under conditions of, pass through Integral synchronous and adjust two voice coil motor mover displacement drive signals Amplitude, frequency, thus it is possible to vary 39 output flow size of the first suction/exhousting hole 38 and the second suction/exhousting hole, by adjusting two voice coil motors The phase difference of mover displacement drive signal, thus it is possible to vary the oil liquid suction direction of the first suction/exhousting hole 38 and the second suction/exhousting hole 39.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.