CN106837725A - Two-dimensional axial plunger displacement pump - Google Patents
Two-dimensional axial plunger displacement pump Download PDFInfo
- Publication number
- CN106837725A CN106837725A CN201611246618.1A CN201611246618A CN106837725A CN 106837725 A CN106837725 A CN 106837725A CN 201611246618 A CN201611246618 A CN 201611246618A CN 106837725 A CN106837725 A CN 106837725A
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- China
- Prior art keywords
- plunger
- cylinder body
- oil duct
- connection
- pressure oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/128—Driving means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Two-dimensional axial plunger displacement pump, including being used for into the first fuel-displaced cylinder body, the second cylinder body for adjusting suction oil, plunger assembly, the drive component for realizing the motion of plunger assembly double freedom and the end cap for accommodating plunger assembly, first cylinder body is affixed with the first end sealing of second cylinder body, and the second end of second cylinder body is affixed with the end cap seal；The plunger assembly is contained in the plunger cavity volume of the end cap, and the plunger assembly is rotated with second cylinder body and is connected.The beneficial effects of the invention are as follows：Axle and plunger integrated design, overall structure is greatly simplified, the oil distribution casing structure of conventional axial plunger displacement pump is instead of using double freedoms of motion (2D) structure of rotation and the slip of plunger, to realize continuous suction oil function, and move back and forth once, suction oil is each once, more than conventional axial plunger displacement pump once；The present invention only has friction pair so that efficiency is greatly improved；Cost is substantially reduced.
Description
Technical field
The present invention relates to a kind of two-dimensional axial plunger displacement pump, belong to the hydraulic pump in Fluid-transmission and control field and hydraulic pressure horse
Reach.
Background technology
Plunger displacement pump plunger and cylinder body are used as groundwork component.When plunger is reciprocating in the plunger hole of cylinder body
When, there is volume and change in the closed swept volume chamber being made up of plunger and cylinder body, complete suction, oil extraction process.According to plunger in cylinder
Different spread patterns in body, plunger displacement pump is divided into radial and the major class of axial type two.Radial plunger pump is due to complex structure, volume
It is larger, substituted by axial plunger pump in many occasions.The plunger centerline parallel (or substantially parallel) of axial plunger pump in
The axis of cylinder body.The good airproof performance of such pump, it is (rated operating pressure is general up to 32-40MPa) high with operating pressure,
Remain to keep at a relatively high volumetric efficiency (typically 95% or so) and gross efficiency (typically more than 90%) under high pressure, easily
Realize variable and unit power it is lightweight the advantages of；It is widely used in pressure processing machinery, handling equipment, engineering machine
In tool, ship deck machinery, metallurgical machinery, cannon and field of space technology, and can be by as high pressure and high pressure fuel source.
The operation principle of the common axial plunger pump of tradition：When power transmission shaft drives cylinder body to rotate, cylinder body can drive plunger
Rotate, by changing the angle between plunger and clinoplain or between power transmission shaft so that plunger makees straight line in plunger cavity
Move back and forth.Moved back and forth in cylinder bore by plunger, make seal operation cavity volume change to realize inhaling, press oil.
The part of traditional axial plunger pump its internal relative motion is more, high to Material texture, requirement on machining accuracy, quick to oil contamination
Sense, processing, using, the requirement and relatively costly safeguarded is expensive；Cylinder body is rotated with power transmission shaft, and rotary inertia is big, leads
Cause the response speed of startup, stopping, speed governing slow, be unfavorable for the output flow come controlling pump by speed governing；In cylinder body friction pair compared with
Many, under high-speed rotation, cylinder body temperature rise is very fast, and the abrasion of the part such as valve plate, plunger directly affects the service life of pump and durable
Property.In addition, due to the limitation of plunger displacement pump operation principle in itself, drive axis one week, each plunger can only be realized once
Oil suction and an oil extraction, its discharge capacity are restricted.
The content of the invention
For the drawbacks described above for overcoming existing axial plunger pump to exist, a kind of structure novelty of present invention offer is compact, volume
It is small, lightweight, be driven that simple, easy speed governing, discharge capacity be high, fortune using plunger double freedom (can be moved axially while rotation)
Dynamic principle realizes the two-dimensional axial plunger displacement pump of continuous suction oil.
Two-dimensional axial plunger displacement pump of the present invention, it is characterised in that：Including be used for into the first fuel-displaced cylinder body, for
Second cylinder body of piston valving, plunger assembly, the drive component for realizing the motion of plunger assembly double freedom and for holding
Receive the end cap of plunger assembly, first cylinder body is connected with the first end sealing of second cylinder body, the of second cylinder body
Two ends are connected with the end cap seal；The plunger assembly is contained in the plunger cavity volume of the end cap, and the plunger group
Part is rotated with second cylinder body and is connected；
First cylinder body is provided with a low pressure oil input channel and a high pressure oil road, wherein the low pressure oil input channel with
The oil feeding reservoirs connection, the high pressure oil road are connected with executive item；
Second cylinder body is provided with center hub, has two the first connection oil duct and two for being connected with low pressure oil input channel
Bar is used for the second connection oil duct connected with high pressure oil road, and the head end of the center hub is embedded with for blocking matching somebody with somebody for fabrication hole
Component, end is provided with the clutch shaft bearing for supporting plunger assembly；The first connection oil duct is with the low pressure oil input channel one by one
Correspondence, the second connection oil duct is corresponded with the high pressure oil road；
The plunger assembly includes plunger, spring and spring base, and the plunger is divided into for the company with the second cylinder body
The Connectivity Section of oil canal insertion, the linkage section for support spring and the construction section for being connected with drive component, the company
Logical section be provided with a pair for connect oil duct connection cooperation groove, and the groove can only be connected with described first oil duct or
One kind correspondence in the second connection oil duct is linked up；The central through hole of the second cylinder body is inserted in the Connectivity Section of the plunger, and
The Connectivity Section outer wall of the plunger is brought into close contact with the central through hole inwall, and the linkage section is by clutch shaft bearing and described the
Two cylinder bodies rotate connection, and the groove set on the Connectivity Section is located exactly at and oil duct and the second connection oil can be connected with first
Road is linked up；The spring housing the plunger linkage section, and one end of the spring be against on clutch shaft bearing end face
Spring base is connected, and the other end is against on the step surface that linkage section is formed with construction section；
The drive component includes shaft coupling, roller shaft, curved cam guide rail and rolling assembly, the construction section of the plunger
It is connected with the motor of outside by shaft coupling；The roller shaft is connected with the construction section of the plunger, and the roller
The two ends of axle are respectively symmetrically installation rolling assembly；The curved cam guide rail is embedded in the end cap, the curved cam its
Middle end face is used as the smooth surface of rolling of the rolling assembly along its surface scrolls is supplied, and the smooth surface of rolling is symmetrical, and
When rolling assembly moves to the minimum point of the smooth surface of rolling, the first connection oil duct is connected with the groove of the plunger, real
Existing plunger displacement pump oil-absorbing process；When rolling assembly moves to the peak of the smooth surface of rolling, it is described second connection oil duct with it is described
The groove connection of plunger, realizes plunger displacement pump oil extraction process.
Second cylinder body be provided with two first connection oil ducts and two second connection oil ducts, it is described first connection oil duct with
The second connection oil duct is axially arranged along second cylinder body, and the first connection oil duct outer end, second company
Oil canal outer end connects with the low pressure oil inlet passage, the high pressure oil discharge passage respectively, the inner of the first connection oil duct,
The inner cross connection oil duct insertion by being radially arranged along the second cylinder body of the second connection oil duct, the cross company
Oil canal is centrally located on the central shaft of the central through hole, and cross connection oil duct every branch road with described first
Connection oil duct or the second connection oil duct connection, every the inner of branch road connect with the central through hole, the outer end of branch road
The outside of the second cylinder body is extended to, and every outer end of branch road is furnished with a set of seal being made up of steel ball and link block.
The high pressure oil road and the low pressure oil input channel are Π type oil ducts, and the high pressure oil road and the low pressure are entered
Oil duct is in 90 ° of angles, and interconnection one end of wherein Π types oil duct extends to the outside of the first cylinder body, forms corresponding low pressure and enters
Hydraulic fluid port or high-pressure oil outlet, and two perpendicular runners of its mesolow oil input channel coordinate with the corresponding first connection oil duct respectively
Insertion；Two perpendicular runners of high pressure oil road coordinate insertion with the corresponding second connection oil duct respectively.
The plunger is two stage steps axle, wherein the external diameter of the Connectivity Section, the linkage section and the construction section is gradually
Increase；The end of Connectivity Section is provided with two rectangle grooves along its axially symmetric disposition；The construction section is provided with for snapping in roller
First U-shaped groove of axle, and the wall of the first U-shaped groove is correspondingly provided with alignment pin through hole.
The roller shaft is connected by pin assembly with the construction section of the plunger, and the pin assembly includes first
Alignment pin, the first needle bearing and the axle-steel silk back-up ring for limiting the axial movement of the first needle bearing, described first determines
Position pin middle part is connected with the middle part of plunger installation portion and roller shaft, and first alignment pin is socketed first after alignment pin through hole
Needle bearing；The axle-steel silk shield ring sleeve is in the first annular groove of the first alignment pin end.
The shaft coupling is included for snapping in the first installation portion of plunger construction section and for being connected with extraneous motor
The second installation portion, first installation portion is provided with the second U-shaped groove and the 3rd U-shaped groove, the construction section insertion of the plunger
In the second U-shaped groove, and first needle bearing is stuck in the 3rd U-shaped groove；Second installation portion is
Cylinder with rectangle keyway, second installation portion inserts the centre bore of the curved cam guide rail, and is fitted close therewith；
The output shaft of outside motor inserts the rectangle keyway；The side wall of wherein described curved cam guide rail is provided with for inserting
The positioning pin jack of alignment pin.
The rolling assembly includes the second needle bearing, second bearing and the circular table roller with center step through-hole
Set, the both ends of roller shaft it is symmetrical the second needle bearing, circular table roller housing and second bearing, institute are from inside to outside installed successively
State second bearing and be stuck in the center step through hole, realize the tight fit of the circular table roller housing and the roller shaft；
The roller the tip of the axis is provided with the second annular groove, and second annular groove is embedded with and is axially moved for limiting second bearing
Dynamic circlip.
The curved cam guide rail is cylinder, and the curved cam guide rail is solid with the end cap by the second alignment pin
Connect, and the end face towards plunger side of curved cam guide rail is rolling surface, and rolling surface is symmetrical smooth arc curved surface, and
The smooth arc curved surface is provided with two peaks and two minimum points；The curved cam guide rail and the second of the shaft coupling
J-shaped outside framework oil seal and deep groove ball bearing for sealing and reducing friction is installed between installation portion.
Clutch shaft bearing and second bearing are thrust ball bearing.
The contact end face of the first cylinder body offers 4 annular seal grooves and a total annular seal groove, wherein four annulars
Seal groove is arranged at the high pressure oil road and the low pressure oil input channel, and a total annular seal groove sets circle in the first cylinder body
Contact end face outer ring, and by high pressure oil road and the low pressure oil input channel circle in total annular seal groove；The contact jaw of end cap
Face is provided with the end cap annular seal groove for embedding sealing circle.
Operation principle is as follows：When motor is rotated, transmitted torque to by shaft coupling, the first needle bearing and bearing pin
Plunger.Circular cone roller is on roller shaft and roller shaft is connected with plunger.The right-hand member of spring is connected with plunger, and left end passes through bullet
Spring abutment is pressed on thrust bearing.Plunger drives roller shaft rotation while rotating, and roller is pressed in convex under spring force
On wheel guide rail, cam tracks are pressed on end cap.Because the effect of cam tracks forces plunger also to be done while rotation back and forth directly
Line is moved.Four windows of circumference uniform distribution and inside are provided with runner on cylinder body, and two be that high pressure window is attached thereto is high pressure
Oil duct, two be that low pressure window is attached thereto is low pressure oil duct.Inlet port and oil discharge outlet are provided with oil inlet and outlet cylinder body, and
Inside has high-pressure oil duct and low pressure oil duct to be connected to form high-low pressure oil circuit with the high-low pressure oil duct on cylinder body respectively.Plunger end
Two oil grooves are arranged symmetrically, when the peak of roller motion to guide rail, cavity volume volume reduces pressure rise, and cavity volume passes through plunger
On two oil grooves connected with high pressure window, the fluid in cavity volume by high pressure window flow into high-pressure oil duct and from oil discharge outlet arrange
Go out.When the minimum point of roller motion to guide rail, cavity volume volume becomes big, and negative pressure is formed in cavity, and now cavity volume is by plunger
Two oil grooves connected with low pressure window, the fluid in fuel tank by inlet port flow into low pressure oil duct, flow through low pressure window and
Oil groove on plunger enters cavity volume.Motor often rotates a circle, and cavity completes oil extraction twice and oil suction twice.
The beneficial effects of the invention are as follows：
1) axle and plunger integrated design are proposed, overall structure is greatly simplified, using the rotation and slip of plunger
Double freedom of motion (2D) structures instead of the oil distribution casing structure of conventional axial plunger displacement pump to realize continuous suction oil function, and
And move back and forth once, suction oil is each once, more than conventional axial plunger displacement pump once.
2) many friction auxiliary structures of more traditional plunger displacement pump, the present invention only has friction pair so that efficiency obtains carrying greatly very much
It is high.
3) miniaturization is realized, on the premise of flow is ensured, cost is substantially reduced.
4) rectangle groove on plunger is linked up with the window on cylinder body, and the chamber that volume becomes larger is by communication
, from fuel tank oil suction, the chamber that volume is gradually reduced is arranged chamber inner fluid by the groove and window linked up for rectangle groove and window
Go out；Plunger is successively moved back and forth makes the volume of left and right chamber constantly staggeredly change, and realizes continuous oil suction and oil extraction.
Brief description of the drawings
Fig. 1 is the structural representation of two-dimensional axial plunger displacement pump of the invention.
Fig. 2 is shaft coupling explosive view of the invention.
Fig. 3 a are plunger schematic diagram of the invention.
Fig. 3 b are the Section A-A figure in Fig. 3 a.
Fig. 4 be plunger motion of the invention to low order end when, groove on plunger not with the second cylinder body on window oil duct
The schematic cross-section linked up.
Fig. 5 is plunger rotation of the invention and starts movement toward left end, groove on plunger respectively with cylinder body on oil duct
The schematic cross-section of communication.
Fig. 6 is oil inlet and outlet cylinder body of the invention and cylinder body suction passage profile.
Fig. 7 is the A-A sectional views of Fig. 6.
Fig. 8 is oil inlet and outlet cylinder body of the invention and cylinder body oil drain passage profile.
Fig. 9 is the B-B sectional views of Fig. 8.
Figure 10 is the structure chart of curved cam guide rail of the invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings
Referring to the drawings：
The two-dimensional axial plunger displacement pump of the present invention of embodiment 1, including be used for into the first fuel-displaced cylinder body 1, for post
Fill in the second cylinder body 4 of flow, plunger assembly 5, the drive component 6 for realizing the motion of plunger assembly double freedom and for holding
Receive the end cap 7 of plunger assembly, first cylinder body 1 is connected with the first end sealing of second cylinder body 4, second cylinder body 4
The sealing of the second end and the end cap 7 be connected；The plunger assembly 5 is contained in the plunger cavity volume of the end cap 7, and described
Plunger assembly 5 is rotated with second cylinder body 4 and is connected；
First cylinder body 1 is provided with a low pressure oil input channel 11 and a high pressure oil road 12, wherein the low pressure is entered
Oil duct 11 is connected with the oil feeding reservoirs, the high pressure oil road 12 is connected with executive item；
Second cylinder body 4 is provided with center hub 41, has two the first connection oil for being connected with low pressure oil input channel 11
Road (42,43) and two be used to be connected with high pressure oil road 12 second connect oil duct (44,45), the head of the center hub 41
End is embedded with the counterpart 9 (counterpart is hexagonal socket head plug) for blocking fabrication hole, and end is provided with for supporting plunger assembly 5
Clutch shaft bearing 8；First connection oil duct (42,43) is corresponded with the low pressure oil input channel 11, the second connection oil duct
(44,45) correspond with the high pressure oil road 12；
The plunger assembly 5 includes plunger 51, spring base 52 and spring 53, and the plunger 51 is divided into for second
The connection Connectivity Section of oil duct insertion of cylinder body, the linkage section for support spring and the installation for being connected with drive component
Section, the Connectivity Section is provided with a pair to be used for and connects the groove (511,512) that oil duct connection coordinates, and the groove can only be with institute
One kind correspondence stated in the first connection oil duct or the second connection oil duct is linked up；The Connectivity Section insertion second of the plunger 51
The central through hole 41 of cylinder body 4, and the Connectivity Section outer wall of the plunger is brought into close contact with the central through hole inwall, the connection
Section is rotated by clutch shaft bearing 8 and second cylinder body 4 and be connected, and on the Connectivity Section groove of setting be located exactly at can be with
First connection oil duct (42,43) connects oil duct (44,45) communication with second；The spring 53 is enclosed within the connection of the plunger 51
Section, and one end of the spring 53 and the spring base 52 being against on the end face of clutch shaft bearing 8 be connected, the other end be against linkage section with
On the step surface that construction section is formed；
The drive component 6 includes shaft coupling 62, roller shaft 63, curved cam guide rail 64 and rolling assembly 65, the post
The construction section of plug 51 is connected by shaft coupling 62 with the motor of outside；The construction section of the roller shaft 63 and the plunger 51
It is connected, and the two ends of the roller shaft 63 are respectively symmetrically installation rolling assembly 65；The curved cam guide rail 64 is embedded in described
In end cap 7, the wherein end face of the curved cam guide rail 64 as rolling assembly 65 along its surface scrolls smooth rolling
Curved surface 641, the smooth surface of rolling 641 is symmetrical, and rolling assembly 65 moves to the minimum point of the smooth surface of rolling 641
When, first connection oil duct (42,43) is connected with the groove (511,512) of the plunger, realizes plunger displacement pump oil-absorbing process；Rolling
When dynamic component 65 moves to the peak of the smooth surface of rolling 641, described second connects the ditch of oil duct (44,45) and the plunger
Groove (511,512) is connected, and realizes plunger displacement pump oil extraction process.
Second cylinder body 4 is provided with two first connections oil duct (42,43) and connects oil duct (44,45), institute with two second
Stating the first connection oil duct (42,43), to connect oil duct (44,45) with described second axially arranged along second cylinder body 4, and
It is described first connection oil duct (42,43) outer end, it is described second connection oil duct (44,45) outer end respectively with the low pressure oil inlet passage
11st, high pressure oil discharge passage connection 12, first connection oil duct (42,43) inner, described second connection oil duct (44,
45) inner cross connection oil duct 46 insertion by being radially arranged along the second cylinder body, the cross connection oil duct 46
It is centrally located on the central shaft of the central through hole 41, and every branch road of cross connection oil duct 46 is connected with described first
Oil duct (42,43) or the second connection oil duct (44,45) connection, the inner and central through hole 41 of every branch road connect
Logical, the outer end of branch road extends to the outside of the second cylinder body 4, and every outer end of branch road equipped with a set of by steel ball 101 and bearing pin
102 seals 10 for constituting.
The high pressure oil road 12 and the low pressure oil input channel 11 are Π type oil ducts, the high pressure oil road 12 and described
Low pressure oil input channel 11 is in 90 ° of angles, and interconnection one end of wherein Π types oil duct extends to the outside of the first cylinder body 1, forms phase
The low pressure oil inlet or high-pressure oil outlet answered, and two perpendicular runners of its mesolow oil input channel 11 are respectively with corresponding described first
Connection oil duct (42,43) coordinates insertion；Two perpendicular runners of high pressure oil road 12 connect oil duct with corresponding described second respectively
(44,45) insertion is coordinated.
The plunger 51 is two stage steps axle, wherein the external diameter of the Connectivity Section, the linkage section and the construction section
It is cumulative；The end of Connectivity Section is provided with two rectangle grooves (511,512) along its axially symmetric disposition；The construction section is provided with use
In the first U-shaped groove 513 for snapping in roller shaft 63, and the wall of the first U-shaped groove 513 is correspondingly provided with alignment pin through hole 514.
The roller shaft 63 is connected by pin assembly 13 with the construction section of the plunger 51, the pin assembly 13
Axle-steel including the first alignment pin 131, the first needle bearing 132 and for limiting the axial movement of the first needle bearing 132
Silk back-up ring 133, the middle part of first alignment pin 131 is connected with the middle part of the installation portion of plunger 51 and roller shaft 63, and described first determines
Position pin 131 is socketed the first needle bearing 132 after alignment pin through hole 514；The axle-steel silk back-up ring 133 is enclosed within the first positioning
In the first annular groove of the end of pin 131.
The shaft coupling 62 include for snap in the construction section of plunger 51 the first installation portion and for extraneous motor
Second installation portion of connection, first installation portion is provided with the second U-shaped groove 621 and the 3rd U-shaped groove 622, the plunger 51
Construction section insert in the second U-shaped groove 621, and first needle bearing 132 is stuck in the 3rd U-shaped groove
At 622；Second installation portion is the cylinder with rectangle keyway, and second installation portion inserts the curved cam guide rail 64
Centre bore 642, and be fitted close therewith；The output shaft of outside motor inserts the rectangle keyway, wherein the song
The side wall of face cam guide rail 64 is provided with the positioning pin jack 643 for inserting alignment pin.
The rolling assembly 65 includes the second needle bearing 651, second bearing 652 and the circle with center step through-hole
Pedestal roller set 653, the second needle bearing 651, circular table of from inside to outside installing successively that the both ends of roller shaft 63 are symmetrical is rolled
Wheel case 653 and second bearing 652, the second bearing 652 are stuck in the center step through hole, realize the circular table roller
Cover the tight fit of 653 and the roller shaft 63；The end of the roller shaft 63 is provided with the second annular groove, and second ring
Shape groove is embedded with the circlip 654 for limiting the axial movement of second bearing 652.
The curved cam guide rail 64 is cylinder, and the curved cam guide rail 64 passes through the second alignment pin 13 and the end
Lid 7 is connected, and the end face towards plunger side of curved cam guide rail 64 is rolling surface, and rolling surface is symmetrical smooth arc
Curved surface, and the smooth arc curved surface is provided with two peaks and two minimum points；The curved cam guide rail 64 with it is described
J-shaped outside framework oil seal and deep groove ball bearing for sealing and reducing friction is installed between the second installation portion of joint 62.
Clutch shaft bearing 8 and second bearing 652 are thrust ball bearing.
The contact end face of the first cylinder body 1 offers 4 annular seal grooves 2 and a total annular seal groove 3, wherein four rings
Shape seal groove 2 is arranged on the high pressure oil road (44,45) and the low pressure oil input channel (42,43) place, a total ring packing
Groove 3 sets circle in the contact end face outer ring of the first cylinder body, and high pressure oil road and the low pressure oil input channel circle is close in total annular
In sealing groove；The contact end face of end cap 7 is provided with the end cap annular seal groove for embedding sealing circle.
Operation principle is as follows：When motor is rotated, by shaft coupling 64, the first needle bearing 132 and the first alignment pin
The moment of torsion of 131 motors passes to plunger 51.Round platform roller housing 653 is mounted on roller shaft 63 and roller shaft 63 and plunger
51 are connected.The right-hand member of spring 53 is connected with plunger 51, and left end is pressed on clutch shaft bearing 8 by spring base 52.Plunger 51 is being rotated
While drive roller shaft 63 rotate, round platform roller housing 653 is pressed on curved cam guide rail 64 under spring force, curved surface
Cam tracks 64 are pressed on end cap 7.Because the effect of curved cam guide rail 64 forces plunger 51 also to do reciprocal while rotation
Linear motion.Four connection runners of circumference uniform distribution on second cylinder body 4, two is the first connection runner (42,43), is attached thereto
It is low pressure oil input channel 11, two is the second connection runner (44,45), and what is be attached thereto is high pressure oil road 12, on the first cylinder body 1
Be provided with low pressure oil inlet and high-pressure oil outlet, and inside low pressure oil road 11 and high pressure oil input channel 12 respectively with the second cylinder body
The first connection runner (42,43), the second connection runner (44,45) on 4 are connected to form high-low pressure oil circuit.The end pair of plunger 51
Claim arrangement two grooves (511,512), when round platform roller housing 653 moves to the peak of curved cam guide rail 64, reservoir body
Product reduces pressure rise, and cavity volume connects oil duct (44,45) with second and connects by two grooves (511,512) on plunger 51,
Fluid in cavity volume flows into high pressure oil road 12 and is discharged from high-pressure oil outlet by the second connection runner (44,45).Work as circle
When platform roller housing 653 moves to the minimum point of guide rail, cavity volume volume becomes big, and negative pressure is formed in cavity, and now cavity volume passes through plunger
Two grooves (511,512) on 51 connect runner (42,43) connection with first, and the fluid in fuel tank passes through low pressure oil inlet
Low pressure oil input channel 11 is flowed into, the groove (511,512) flowed through on the first connection runner (42,43) and plunger 51 enters cavity volume.Electricity
Machine often rotates a circle, and cavity completes oil extraction twice and oil suction twice.
In the present embodiment, as shown in Fig. 3 a to Fig. 5, two grooves of rectangle (511,512) on plunger 51, its notch position
Put and symmetrically stagger, be i.e. the notch of groove 511 is in opposite direction with the notch of groove 512.It is relative with groove (511,512) on second cylinder body 4
The first connection runner (42,43) answered connects oil duct (44,45) with second, wherein the first connection runner (42,43) is by being opened in
The perpendicular oil duct (111,112) of the low pressure oil input channel 11 of oil inlet and outlet cylinder interior Π types is mutually communicated, the second connection oil duct (44,
45) it is mutually communicated by being opened in the perpendicular oil duct (121,122) of the high pressure oil road 12 of oil inlet and outlet cylinder interior Π types.
As shown in Figure 4 and Figure 5, plunger is rotated counterclockwise, first connection runner (42,43) connected with second oil duct (44,
45) it is window channel on cylinder body, the perpendicular oil duct (111,112) of low pressure oil input channel 11 is suction passage, the second connection oil duct
(44,45) are oil drain passage.Groove (511,512) is the rectangle groove on plunger 51.
Fig. 4 be plunger motion to low order end when, rectangle groove (511,512) now on plunger 51 not with cylinder body on it is low
The perpendicular oil duct (111,112) of oil duct 11, the perpendicular oil duct (121,122) of high pressure oil road 12 is pressed into link up.
Start movement toward left end while plunger rotation, as shown in figure 5, the rectangle groove (511,512) point on plunger
Oil duct (44,45) communication is not connected with second on cylinder body, the chamber that volume is tapered into is by the oil in chamber by the second connection
Oil duct (44,45) extrudes fluid.
When plunger is rotated further, then plunger starts motion of turning right, and chamber begins through the perpendicular oil for linking up low pressure oil input channel 11
Road (111,112), first connects runner (42,43) from fuel tank oil suction.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (10)
1. two-dimensional axial plunger displacement pump, it is characterised in that：Including being used for into the first fuel-displaced cylinder body, for second with piston valving
Cylinder body, plunger assembly, the drive component for realizing the motion of plunger assembly double freedom and the end for accommodating plunger assembly
Lid, first cylinder body is connected with the first end sealing of second cylinder body, the second end and the end cap of second cylinder body
Sealing is connected；The plunger assembly is contained in the plunger cavity volume of the end cap, and the plunger assembly and second cylinder
Body rotates connection；
First cylinder body is provided with a low pressure oil input channel and a high pressure oil road, wherein the low pressure oil input channel with it is described
Oil feeding reservoirs connection, the high pressure oil road are connected with executive item；
Second cylinder body be provided with center hub, have two for connect with low pressure oil input channel first connect oil duct and two with
In the second connection oil duct connected with high pressure oil road, the head end of the center hub is embedded with the cooperation for blocking fabrication hole
Part, end is provided with the clutch shaft bearing for supporting plunger assembly；A pair of first connection oil duct and the low pressure oil input channel 1
Should, the second connection oil duct is corresponded with the high pressure oil road；
The plunger assembly includes plunger, spring and spring base, and the plunger is divided into for the connection oil with the second cylinder body
The Connectivity Section of road insertion, the linkage section for support spring and the construction section for being connected with drive component, the Connectivity Section
Being provided with a pair is used for and connects the groove that oil duct connection coordinates, and the groove can only connect oil duct or described with described first
One kind correspondence in second connection oil duct is linked up；The central through hole of the second cylinder body is inserted in the Connectivity Section of the plunger, and described
The Connectivity Section outer wall of plunger is brought into close contact with the central through hole inwall, and the linkage section passes through clutch shaft bearing and second cylinder
Body rotates connection, and the groove set on the Connectivity Section is located exactly at and oil duct and the second connection oil duct ditch can be connected with first
It is logical；The spring housing the plunger linkage section, and one end of the spring and the spring being against on clutch shaft bearing end face
Seat is connected, and the other end is against on the step surface that linkage section is formed with construction section；
The drive component includes shaft coupling, roller shaft, curved cam guide rail and rolling assembly, and the construction section of the plunger passes through
Shaft coupling is connected with the motor of outside；The roller shaft is connected with the construction section of the plunger, and the roller shaft
Two ends are respectively symmetrically installation rolling assembly；The curved cam guide rail is embedded in the end cap, the curved cam guide rail its
Middle end face is used as the smooth surface of rolling of the rolling assembly along its surface scrolls is supplied, and the smooth surface of rolling is symmetrical, and
When rolling assembly moves to the minimum point of the smooth surface of rolling, the first connection oil duct is connected with the groove of the plunger, real
Existing plunger displacement pump oil-absorbing process；When rolling assembly moves to the peak of the smooth surface of rolling, it is described second connection oil duct with it is described
The groove connection of plunger, realizes plunger displacement pump oil extraction process.
2. two-dimensional axial plunger displacement pump as claimed in claim 1, it is characterised in that：Second cylinder body is provided with two first connections
Oil duct and two second connection oil ducts, the first connection oil duct connect oil duct with described second along the second cylinder body axial direction
Set, and the first connection oil duct outer end, the second connection oil duct outer end respectively with the low pressure oil inlet passage, described
High pressure oil discharge passage is connected, and the inner of inner, the described second connection oil duct of the first connection oil duct is by along the second cylinder body
The cross connection oil duct insertion being radially arranged, the cross connection oil duct is centrally located at the central shaft of the central through hole
On, and every branch road of cross connection oil duct connects oil duct or the second connection oil duct connection with described first, often
The inner of bar branch road connects with the central through hole, and the outer end of branch road extends to the outside of the second cylinder body, and every branch road
It is furnished with a set of seal being made up of steel ball and bearing pin in outer end.
3. two-dimensional axial plunger displacement pump as claimed in claim 2, it is characterised in that：The high pressure oil road and the low pressure oil-feed
Road isType oil duct, the high pressure oil road and the low pressure oil input channel are in 90 ° of angles, whereinThe interconnection of type oil duct
One end extends to the outside of the first cylinder body, forms corresponding low pressure oil inlet or high-pressure oil outlet, and its mesolow oil input channel
Two perpendicular runner coordinates insertion with the corresponding first connection oil duct respectively；Two perpendicular runners of high pressure oil road respectively with it is right
The the second connection oil duct answered coordinates insertion.
4. two-dimensional axial plunger displacement pump as claimed in claim 2, it is characterised in that：The plunger is two stage steps axle, wherein institute
The external diameter for stating Connectivity Section, the linkage section and the construction section is cumulative；The end of Connectivity Section be provided with two it is axially symmetric along its
The rectangle groove of arrangement；The construction section is provided with for snapping in the first of roller shaft the U-shaped groove, and the first U-shaped groove wall
It is correspondingly provided with alignment pin through hole.
5. two-dimensional axial plunger displacement pump as claimed in claim 4, it is characterised in that：The roller shaft passes through pin assembly and institute
The construction section for stating plunger is connected, and the pin assembly includes the first alignment pin, the first needle bearing and for limiting first
The axle-steel silk back-up ring of needle bearing axial movement, the first alignment pin middle part is consolidated with the middle part of plunger installation portion and roller shaft
Even, first alignment pin is socketed the first needle bearing after alignment pin through hole；The axle-steel silk shield ring sleeve is fixed first
In the first annular groove of position pin end.
6. two-dimensional axial plunger displacement pump as claimed in claim 1, it is characterised in that：The shaft coupling is included for snapping in plunger peace
First installation portion and the second installation portion for being connected with extraneous motor of section are filled, first installation portion is provided with the 2nd U
Type groove and the 3rd U-shaped groove, the construction section of the plunger are inserted in the second U-shaped groove, and the first needle roller axle
Hold and be stuck in the 3rd U-shaped groove；Second installation portion is the cylinder with rectangle keyway, the second installation portion insertion
The centre bore of the curved cam guide rail, and be fitted close therewith；The output shaft of outside motor inserts the square key
Groove, wherein the side wall of the curved cam guide rail is provided with the positioning pin jack for inserting alignment pin.
7. two-dimensional axial plunger displacement pump as claimed in claim 1, it is characterised in that：The rolling assembly includes the second needle roller axle
Hold, second bearing and the circular table roller housing with center step through-hole, the both ends of roller shaft it is symmetrical from inside to outside according to
The second needle bearing of secondary installation, circular table roller housing and second bearing, the second bearing are stuck in the center step through hole,
Realize the tight fit of the circular table roller housing and the roller shaft；The roller the tip of the axis is provided with the second annular groove, and
And second annular groove is embedded with the circlip for limiting second bearing axial movement.
8. two-dimensional axial plunger displacement pump as claimed in claim 1, it is characterised in that：The curved cam guide rail is cylinder, institute
Curved cam guide rail is stated to be connected by the second alignment pin and the end cap, and curved cam guide rail the end towards plunger side
Face is rolling surface, and rolling surface is symmetrical smooth arc curved surface, and the smooth arc curved surface is provided with two peaks and two
Minimum point；J for sealing and reducing friction is installed between the curved cam guide rail and the second installation portion of the shaft coupling
Shape outside framework oil seal and deep groove ball bearing.
9. two-dimensional axial plunger displacement pump as claimed in claim 7, it is characterised in that：Clutch shaft bearing and second bearing are thrust
Ball bearing.
10. the two-dimensional axial plunger displacement pump as described in claim 1~9 any one claim, it is characterised in that：First cylinder body
Contact end face offer 4 annular seal grooves and a total annular seal groove, wherein four annular seal grooves be arranged on it is described
At high pressure oil road and the low pressure oil input channel, a total annular seal groove sets circle in the contact end face outer ring of the first cylinder body,
And by high pressure oil road and the low pressure oil input channel circle in total annular seal groove；The contact end face of end cap is provided with close for being embedded in
The end cap annular seal groove of seal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611246618.1A CN106837725B (en) | 2016-12-29 | 2016-12-29 | two-dimensional axial plunger pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611246618.1A CN106837725B (en) | 2016-12-29 | 2016-12-29 | two-dimensional axial plunger pump |
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| CN106837725A true CN106837725A (en) | 2017-06-13 |
| CN106837725B CN106837725B (en) | 2019-01-08 |
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| CN108661874A (en) * | 2018-05-11 | 2018-10-16 | 浙江工业大学 | Shaftless two-dimensional plunger variable motor pump |
| CN108869622A (en) * | 2018-07-24 | 2018-11-23 | 广东机电职业技术学院 | A kind of plunger type buffer unit |
| CN109209819A (en) * | 2018-10-16 | 2019-01-15 | 嘉兴学院 | A kind of piston drive and two dimensional compaction machine |
| CN109838365A (en) * | 2019-04-04 | 2019-06-04 | 封海涛 | Fluid exchanger |
| CN112610438A (en) * | 2020-11-23 | 2021-04-06 | 河南航天液压气动技术有限公司 | Piston pump |
| CN112809663A (en) * | 2021-01-06 | 2021-05-18 | 杭州电子科技大学 | Flexible mechanical arm of underwater robot |
| CN113323862A (en) * | 2021-06-23 | 2021-08-31 | 河南航天液压气动技术有限公司 | 2D hydraulic pump |
| CN114198277A (en) * | 2021-12-14 | 2022-03-18 | 浙江工业大学 | Gear drive reciprocating piston pump |
| CN116292172A (en) * | 2023-05-24 | 2023-06-23 | 浙大城市学院 | Single-cam two-dimensional piston motor pump |
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| CN108661874B (en) * | 2018-05-11 | 2019-11-05 | 浙江工业大学 | Shaftless two-dimensional plunger variable motor pump |
| CN108869622A (en) * | 2018-07-24 | 2018-11-23 | 广东机电职业技术学院 | A kind of plunger type buffer unit |
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| CN109209819A (en) * | 2018-10-16 | 2019-01-15 | 嘉兴学院 | A kind of piston drive and two dimensional compaction machine |
| CN109838365A (en) * | 2019-04-04 | 2019-06-04 | 封海涛 | Fluid exchanger |
| CN112610438A (en) * | 2020-11-23 | 2021-04-06 | 河南航天液压气动技术有限公司 | Piston pump |
| CN112809663A (en) * | 2021-01-06 | 2021-05-18 | 杭州电子科技大学 | Flexible mechanical arm of underwater robot |
| CN113323862A (en) * | 2021-06-23 | 2021-08-31 | 河南航天液压气动技术有限公司 | 2D hydraulic pump |
| CN114198277A (en) * | 2021-12-14 | 2022-03-18 | 浙江工业大学 | Gear drive reciprocating piston pump |
| CN116292172A (en) * | 2023-05-24 | 2023-06-23 | 浙大城市学院 | Single-cam two-dimensional piston motor pump |
| CN116292172B (en) * | 2023-05-24 | 2024-06-04 | 浙大城市学院 | Single-cam two-dimensional piston motor pump |
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| CN106837725B (en) | 2019-01-08 |
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Effective date of registration: 20220331 Address after: 310005 No. 1, Wuyi lane, Hushu South Road, Gongshu District, Hangzhou, Zhejiang Patentee after: Hangzhou Diwei Electrohydraulic digital control technology Co.,Ltd. Address before: 310014 No. 18, Chaowang Road, Xiacheng District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG University OF TECHNOLOGY |