CN106837725B - two-dimensional axial plunger pump - Google Patents

two-dimensional axial plunger pump Download PDF

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Publication number
CN106837725B
CN106837725B CN201611246618.1A CN201611246618A CN106837725B CN 106837725 B CN106837725 B CN 106837725B CN 201611246618 A CN201611246618 A CN 201611246618A CN 106837725 B CN106837725 B CN 106837725B
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China
Prior art keywords
plunger
cylinder
oil
oil duct
connection
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CN201611246618.1A
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CN106837725A (en
Inventor
阮健
何鸿斌
李进园
熊慎
虞儒敏
贾文昂
赵伟
孟彬
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/128Driving means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162Adaptations of cylinders

Abstract

Two-dimensional axial plunger pump, including the first cylinder body for passing in and out oil, the second cylinder body for adjusting suction oil, plunger assembly, the end cap for realizing the driving assembly of plunger assembly double freedom movement and for accommodating plunger assembly, the first end sealing of first cylinder body and second cylinder body is affixed, and the second end and the end cap seal of second cylinder body are affixed;The plunger assembly is contained in the plunger cavity of the end cap, and the plunger assembly and second cylinder body are rotatablely connected.The beneficial effects of the present invention are: axis and plunger integrated design, overall structure is greatly simplified, using plunger rotation and sliding double freedom of motion (2D) structure instead of conventional axial plunger pump oil distribution casing structure, to realize continuous suction oil function, and it moves back and forth primary, suction oil is each primary, how primary compared with conventional axial plunger pump;The present invention only has friction pair, so that efficiency is greatly improved;Cost is substantially reduced.

Description

Two-dimensional axial plunger pump
Technical field
The present invention relates to a kind of two-dimensional axial plunger pump, belong to the hydraulic pump in Fluid-transmission and control field and hydraulic horse It reaches.
Background technique
Plunger pump uses plunger and cylinder body as groundwork component.When plunger is reciprocating in the plunger hole of cylinder body When, volume variation is occurred by the closed swept volume chamber that plunger and cylinder body form, completes suction, oil extraction process.According to plunger in cylinder Different spread patterns in body, plunger pump are divided into radial and axial type two major classes.Radial plunger pump is since structure is complicated, volume It is larger, it has been 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 has operating pressure height (the generally reachable 32-40MPa of rated operating pressure), It is still able to maintain quite high volumetric efficiency (generally 95% or so) and gross efficiency (generally 90% or more) under high pressure, is easy Realize variable and unit power it is light-weight the advantages that;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 working principle of the common axial plunger pump of tradition: when transmission shaft drives cylinder body rotation, cylinder body will drive plunger Rotation, by changing the angle between plunger and clinoplain or between transmission shaft, so that plunger makees straight line in plunger cavity It moves back and forth.It is moved back and forth in cylinder bore by plunger, so that seal operation cavity volume is changed to realize suction, pressure oil. The part of its internal relative motion of traditional axial plunger pump is more, high to Material texture, requirement on machining accuracy, quick to oil contamination Sense, processing, use, maintenance requirement and higher cost, it is expensive;Cylinder body is rotated together with transmission shaft, and rotary inertia is big, is led It causes starting, the response speed for stopping, adjusting the speed slow, is unfavorable for controlling the output flow of pump by adjusting the speed;In cylinder body friction it is secondary compared with More, under high-speed rotation, cylinder body temperature rise is very fast, and the abrasion of the parts such as valve plate, plunger directly affects the service life of pump and durable Property.In addition to this, since the limitation of plunger pump working principle itself, transmission shaft rotate one week, each plunger can only be realized once Oil suction and an oil extraction, discharge capacity are restricted.
Summary of the invention
In order to overcome drawbacks described above existing for existing axial plunger pump, the present invention provides that a kind of structure novel is compact, volume Small, light-weight, transmission simply, easily adjusts the speed, discharge capacity is high, utilizes the fortune of plunger double freedom (can move axially while rotation) Dynamic principle realizes the two-dimensional axial plunger pump of continuous suction oil.
Two-dimensional axial plunger pump of the present invention, it is characterised in that: including for pass in and out oil the first cylinder body, for Second cylinder body of piston valving, plunger assembly, for realizing the driving assembly of plunger assembly double freedom movement and for holding Receive the end cap of plunger assembly, the first end sealing of first cylinder body and second cylinder body is connected, and the of second cylinder body Two ends and the end cap seal are connected;The plunger assembly is contained in the plunger cavity of the end cap, and the plunger group Part and second cylinder body are rotatablely connected;
First cylinder body be equipped 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 to executive item;
Second cylinder body is equipped with center hub, has two the first connection oil ducts and two for being connected to low pressure oil input channel The second connection oil duct that item is used to be connected to high pressure oil road, the head end of the center hub are embedded with for blocking matching for fabrication hole Component, end are equipped with the first bearing for being used to support plunger assembly;The first connection oil duct and the low pressure oil input channel are one by one Corresponding, the second connection oil duct and the high pressure oil road correspond;
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 perforation, the linkage section for being used to support spring and the construction section for being connected with driving assembly, the company Logical section is equipped with a pair of groove for being used for and be connected to oil duct connection and cooperate, and the groove can only with described first be connected to oil duct or One of the second connection oil duct is corresponding to link up;The central through hole of the second cylinder body is inserted into the Connectivity Section of the plunger, and The Connectivity Section outer wall of the plunger is fitted closely with the central through hole inner wall, and the linkage section passes through first bearing and described the The rotation connection of two cylinder bodies, and the groove being arranged on the Connectivity Section is located exactly at and can be connected to oil duct and the second connection oil with first Road is linked up;The spring pocket and one end of the spring and is against on first bearing end face in the linkage section of the plunger Spring base is connected, and the other end is against on the step surface that linkage section and construction section are formed;
The driving component includes shaft coupling, roller shaft, curved cam guide rail and rolling assembly, the construction section of the plunger It is connected by shaft coupling and external driving motor;The construction section of the roller shaft and the plunger is connected, and the idler wheel The both ends of axis are respectively symmetrically installed by rolling assembly;The curved cam guide rail is embedded in the end cap, the curved cam its In an end face as the smooth surface of rolling for rolling assembly along its surface scrolls, 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 to the groove of the plunger, real Existing plunger pump oil-absorbing process;When rolling assembly moves to the highest point of the smooth surface of rolling, it is described second connection oil duct with it is described The groove of plunger is connected to, and realizes plunger pump oil extraction process.
Second cylinder body be equipped with two first connection oil ducts and two second connection oil ducts, it is described first be connected to oil duct and The second connection oil duct is axially arranged along second cylinder body, and first connection oil duct outer end, second company Oil canal outer end is connected to the low pressure oil inlet passage, the high pressure oil discharge passage respectively, the inner end of the first connection oil duct, The inner end of the second connection oil duct is penetrated through by the cross connection oil duct being arranged radially along the second cylinder body, the cross company The center of oil canal is located on the central axis of the central through hole, and every branch of cross connection oil duct is with described first It is connected to oil duct or the second connection oil duct connection, the inner end of every branch is connected to the central through hole, the outer end of branch The outside of the second cylinder body is extended to, and the outer end of every branch is furnished with a set of sealing element being made of steel ball and link block.
The high pressure oil road and the low pressure oil input channel areType oil duct, the high pressure oil road and the low pressure into Oil duct is in 90 ° of angles, whereinInterconnection one end of type oil duct extends to the outside of the first cylinder body, formed corresponding low pressure into Hydraulic fluid port or high-pressure oil outlet, and two perpendicular runners of its mesolow oil input channel cooperate with the corresponding first connection oil duct respectively Perforation;Two perpendicular runners of high pressure oil road are penetrated through with the corresponding second connection oil duct cooperation respectively.
The plunger is two stage steps axis, wherein the outer diameter of the Connectivity Section, the linkage section and the construction section is gradually Increase;The end of Connectivity Section set there are two along its axially symmetric disposition rectangle groove;The construction section is equipped with for being caught in idler wheel The U-shaped groove of the first of axis, and the wall surface of the first U-shaped groove is correspondingly provided with positioning pin through-hole.
The roller shaft is connected by the construction section of pin assembly and the plunger, and the pin assembly includes first Positioning pin, the first needle bearing and the axle elastic spring for limiting the axial movement of the first needle bearing, described first is fixed Position pin middle part is connected with the middle part of plunger mounting portion and roller shaft, and first positioning pin is socketed first after running through positioning pin through-hole Needle bearing;The axle elastic spring covers in the first annular slot of the first positioning pin end.
The shaft coupling includes the first mounting portion for being caught in plunger construction section and for connecting with extraneous driving motor The second mounting portion, first mounting portion is equipped with the second U-shaped groove and the U-shaped groove of third, and the construction section of the plunger is inserted into In the second U-shaped groove, and first needle bearing is stuck in the U-shaped groove of the third;Second mounting portion is Cylinder with rectangle keyway, second mounting portion are inserted into the centre bore of the curved cam guide rail, and are fitted close therewith; The output shaft of external driving motor is inserted into the rectangle keyway;Wherein the side wall of the curved cam guide rail is equipped with for being inserted into The positioning pin jack of positioning pin.
The rolling assembly includes the second needle bearing, second bearing and the circular table idler wheel with center step through-hole Set, the second needle bearing, circular table roller housing and second bearing, institute are symmetrically successively installed in the both ends of roller shaft from inside to outside It states second bearing and is stuck in center step through hole, realize the tight fit of the circular table roller housing and the roller shaft; The idler wheel the tip of the axis is equipped with the second annular groove, and second annular groove is embedded with and axially moves for limiting second bearing Dynamic circlip.
The curved cam guide rail is cylindrical body, and the curved cam guide rail is solid by the second positioning pin and the end cap Even, 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 set there are two highest point and two minimum points;The second of the curved cam guide rail and the shaft coupling J-shaped outside framework oil seal and deep groove ball bearing for sealing and reducing friction is installed between mounting portion.
First bearing and second bearing are thrust ball bearing.
The contact face of 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 setting circle is in the first cylinder body Contact 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 equipped with the end cap annular seal groove for embedding sealing circle.
Working principle is as follows: when driving motor rotates, being transmitted torque to by shaft coupling, the first needle bearing and pin shaft Plunger.Circular cone idler wheel is on roller shaft and roller shaft and plunger are connected.The right end and plunger of spring are connected, and left end passes through bullet Spring abutment is pressed on thrust bearing.Plunger drives roller shaft rotation while rotation, and idler wheel is pressed in convex under spring force It takes turns on guide rail, cam tracks are pressed on end cap.Since the effect of cam tracks forces plunger also to do while rotating back and forth directly Line movement.Four windows of circumference uniform distribution and inside are provided with runner on cylinder body, and two be attached thereto for high pressure window is high pressure Oil duct, two be attached thereto for low pressure window is low pressure oil duct.Inlet port and oil discharge outlet are provided on 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 highest point of roller motion to guide rail, cavity volume reduces pressure rise, and cavity passes through plunger On two oil grooves be connected to high pressure window, the oil liquid in cavity by high pressure window flow into high-pressure oil duct and from oil discharge outlet arrange Out.When the minimum point of roller motion to guide rail, cavity volume becomes larger, and negative pressure is formed in cavity, and cavity passes through on plunger at this time Two oil grooves be connected to low pressure window, the oil liquid in fuel tank by inlet port flow into low pressure oil duct, flow through low pressure window and Oil groove on plunger enters cavity.Motor often rotates a circle, and cavity completes oil extraction twice and oil suction twice.
The beneficial effects of the present invention are:
1) axis and plunger integrated design are proposed, overall structure is greatly simplified, utilize the rotation and sliding of plunger Double freedom of motion (2D) structures instead of conventional axial plunger pump oil distribution casing structure, to realize continuous suction oil function, and And move back and forth once, suction oil is each primary, how primary compared with conventional axial plunger pump.
2) more friction auxiliary structures of more traditional plunger pump, the present invention only have friction pair, so that efficiency obtains mentioning greatly very much It is high.
3) micromation is realized, under the premise of guaranteeing flow, cost is substantially reduced.
4) window on the rectangle groove and cylinder body on plunger is linked up, and the chamber that volume becomes larger passes through communication From fuel tank oil suction, the chamber that volume is gradually reduced is arranged intracavitary oil liquid by the groove and window linked up for rectangle groove and window Out;Plunger, which successively moves back and forth, changes the volume of left and right chamber constantly staggeredly, realizes continuous oil suction and oil extraction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of two-dimensional axial plunger pump of the invention.
Fig. 2 is shaft coupling explosive view of the invention.
Fig. 3 a is plunger schematic diagram of the invention.
Fig. 3 b is the Section A-A figure in Fig. 3 a.
Fig. 4 be plunger motion of the invention to right end when, groove on plunger not with the window oil duct on the second cylinder body The schematic cross-section linked up.
Fig. 5 is plunger rotation of the invention and starts to move toward left end, the groove on plunger respectively with the oil duct on cylinder body The schematic cross-section of communication.
Fig. 6 is oil inlet and outlet cylinder body and cylinder body suction passage sectional view of the invention.
Fig. 7 is the A-A cross-sectional view of Fig. 6.
Fig. 8 is oil inlet and outlet cylinder body and cylinder body oil drain passage sectional view of the invention.
Fig. 9 is the B-B cross-sectional view 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 with reference to the accompanying drawing
Referring to attached drawing:
The two-dimensional axial plunger pump of the present invention of embodiment 1, including for passing in and out oil the first cylinder body 1, be used for and column Fill in the second cylinder body 4 of flow, plunger assembly 5, for realizing the driving assembly 6 of plunger assembly double freedom movement and for holding Receive the end cap 7 of plunger assembly, the first end sealing of first cylinder body 1 and second cylinder body 4 is connected, second cylinder body 4 Second end and the end cap 7 sealing be connected;The plunger assembly 5 is contained in the plunger cavity of the end cap 7, and described Plunger assembly 5 and second cylinder body 4 are rotatablely connected;
First cylinder body 1 be equipped with a low pressure oil input channel 11 and a high pressure oil road 12, wherein the low pressure into Oil duct 11 is connected to the oil feeding reservoirs, the high pressure oil road 12 is connected to executive item;
Second cylinder body 4 is equipped with center hub 41, has two the first connection oil for being connected to low pressure oil input channel 11 Road (42,43) and two the second connections oil duct (44,45) for being connected to high pressure oil road 12, the head of the center hub 41 End is equipped with embedded with the matching piece 9 (matching piece is hexagonal socket head plug) for blocking fabrication hole, end and is used to support plunger assembly 5 First bearing 8;First connection oil duct (42,43) and the low pressure oil input channel 11 correspond, the second connection oil duct (44,45) and the high pressure oil road 12 correspond;
The plunger assembly 5 includes plunger 51, spring base 52 and spring 53, and the plunger 51 is divided into for second The Connectivity Section of the connection oil duct perforation of cylinder body is used to support the linkage section of spring and the installation for being connected with driving assembly Section, the Connectivity Section is equipped with a pair of groove (511,512) for being used for and being connected to oil duct connection cooperation, and the groove can only be with institute State the corresponding communication of one of the first connection oil duct or the second connection oil duct;The Connectivity Section insertion second of the plunger 51 The center hub 41 of cylinder body 4, and the Connectivity Section outer wall of the plunger is fitted closely with the center hub inner wall, the connection Section is rotatablely connected by first bearing 8 and second cylinder body 4, and be located exactly at can be with for the groove being arranged on the Connectivity Section First connection oil duct (42,43) is connected to oil duct (44,45) with second and links up;53 sets of the spring connections in the plunger 51 Section, and one end of the spring 53 is connected with the spring base 52 that is against on 8 end face of first bearing, the other end be against linkage section with On the step surface that construction section is formed;
The driving component 6 includes shaft coupling 62, roller shaft 63, curved cam guide rail 64 and rolling assembly 65, the column The construction section of plug 51 is connected by shaft coupling 62 and external driving motor;The construction section of the roller shaft 63 and the plunger 51 It is connected, and rolling assembly 65 is respectively symmetrically installed at the both ends of the roller shaft 63;The curved cam guide rail 64 is embedded in described In end cap 7, a wherein end face for the curved cam guide rail 64 is as the smooth rolling for rolling assembly 65 along its surface scrolls 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, the groove (511,512) of first connection oil duct (42,43) and the plunger is connected to, and realizes plunger pump oil-absorbing process;Rolling When dynamic component 65 moves to the highest point of the smooth surface of rolling 641, the ditch of second connection oil duct (44,45) and the plunger Slot (511,512) connection, realizes plunger pump oil extraction process.
Second cylinder body 4 is equipped with two first connection oil ducts (42,43) and is connected to oil duct (44,45), institute with two second It states the first connection oil duct (42,43) and is connected to oil duct (44,45) along the axial setting of second cylinder body 4 with described second, 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 11, high pressure oil discharge passage connection 12, the inner end of first connection oil duct (42,43), the second connection oil duct (44, 45) inner end is penetrated through by the cross connection oil duct 46 being arranged radially along the second cylinder body, the cross connection oil duct 46 Center is located on the central axis of the center hub 41, and every branch of cross connection oil duct 46 is connected to described first Oil duct (42,43) or the second connection oil duct (44,45) connection, the inner end of every branch and the center hub 41 connect Logical, the outer end of branch extends to the outside of the second cylinder body 4, and the outer end of every branch is equipped with a set of by steel ball 101 and pin shaft 102 sealing elements 10 constituted.
The high pressure oil road 12 and the low pressure oil input channel 11 are Π type oil duct, the high pressure oil road 12 and described Low pressure oil input channel 11 is in 90 ° of angles, and wherein interconnection one end of Π type 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 It is connected to oil duct (42,43) cooperation perforation;Two perpendicular runners of high pressure oil road 12 are connected to oil duct with corresponding described second respectively (44,45) cooperation perforation.
The plunger 51 is two stage steps axis, wherein the outer diameter of the Connectivity Section, the linkage section and the construction section It is cumulative;The end of Connectivity Section set there are two along its axially symmetric disposition rectangle groove (511,512);The construction section, which is equipped with, to be used In the first U-shaped groove 513 for being caught in roller shaft 63, and the wall surface of the first U-shaped groove 513 is correspondingly provided with positioning pin through-hole 514.
The roller shaft 63 is connected by the construction section of pin assembly 13 and the plunger 51, the pin assembly 13 Including the first positioning pin 131, the first needle bearing 132 and the axle-steel moved axially for limiting the first needle bearing 132 Silk retaining ring 133,131 middle part of the first positioning pin are connected with the middle part of 51 mounting portion of plunger and roller shaft 63, and described first is fixed Position pin 131 is socketed the first needle bearing 132 after positioning pin through-hole 514;133 sets of the axle elastic spring in the first positioning In the first annular slot of 131 end of pin.
The shaft coupling 62 includes the first mounting portion for being caught in 51 construction section of plunger and is used for and extraneous driving motor Second mounting portion of connection, first mounting portion are equipped with the second U-shaped groove 621 and the U-shaped groove 622 of third, the plunger 51 Construction section be inserted into the second U-shaped groove 621, and first needle bearing 132 is stuck in the U-shaped groove of the third At 622;Second mounting portion is the cylinder with rectangle keyway, and second mounting portion is inserted into the curved cam guide rail 64 Centre bore 642, and be fitted close therewith;The output shaft of external driving motor is inserted into the rectangle keyway, wherein the song The side wall of face cam guide rail 64 is equipped with the positioning pin jack 643 for being inserted into positioning pin.
The rolling assembly 65 includes the second needle bearing 651, second bearing 652 and the circle with center step through-hole The second needle bearing 651, circular table rolling are symmetrically successively installed in pedestal roller set 653, the both ends of roller shaft 63 from inside to outside Wheel case 653 and second bearing 652, the second bearing 652 are stuck in center step through hole, realize the circular table idler wheel The tight fit of set 653 and the roller shaft 63;The end of the roller shaft 63 is equipped with the second annular groove, and second ring Shape slot is embedded with the circlip 654 for limiting the axial movement of second bearing 652.
The curved cam guide rail 64 is cylindrical body, and the curved cam guide rail 64 passes through the second positioning 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 set there are two highest point 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 mounting portion of joint 62.
First bearing 8 and second bearing 652 are thrust ball bearing.
The contact face of 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 at the high pressure oil road (44,45) and the low pressure oil input channel (42,43), a total ring packing The setting of slot 3 is enclosed in the contact 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 face of end cap 7 is equipped with the end cap annular seal groove for embedding sealing circle.
Working principle is as follows: when driving motor rotates, passing through shaft coupling 64, the first needle bearing 132 and the first positioning pin The torque of 131 driving motors passes to plunger 51.Rotary table roller housing 653 is on the roller shaft 63 and roller shaft 63 and plunger 51 are connected.The right end and plunger 51 of spring 53 are connected, and left end is pressed in first bearing 8 by spring base 52.Plunger 51 is rotating While drive roller shaft 63 to rotate, rotary table roller housing 653 is pressed under spring force on curved cam guide rail 64, curved surface Cam tracks 64 are pressed on end cap 7.Since the effect of curved cam guide rail 64 forces plunger 51 also to do while rotating back and forth Linear motion.Four connection runners of circumference uniform distribution on second cylinder body 4, two are the first connection runner (42,43), are attached thereto It is low pressure oil input channel 11, two are 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 internal 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.51 end pair of plunger Claim arrangement two grooves (511,512), when rotary table roller housing 653 moves to the highest point of curved cam guide rail 64, reservoir body Product reduces pressure rise, and cavity is connected to oil duct (44,45) connection with second by two grooves (511,512) on plunger 51, Oil liquid in cavity flows into high pressure oil road 12 by the second connection runner (44,45) and is discharged from high-pressure oil outlet.Work as circle When platform roller housing 653 moves to the minimum point of guide rail, cavity volume becomes larger, and negative pressure is formed in cavity, cavity passes through plunger at this time Two grooves (511,512) on 51 are connected to runner (42,43) connection with first, and the oil liquid 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.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, the groove (511,512) of two rectangles on plunger 51, notch position It sets and is symmetrically staggered, is i.e. 511 notch of groove is contrary with 512 notch of groove.It is opposite with groove (511,512) on second cylinder body 4 The first connection runner (42,43) answered is connected to 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 type 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 type.
As shown in Figure 4 and Figure 5, plunger rotates counterclockwise, first connection runner (42,43) with second be connected to oil duct (44, It 45) 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 It (44,45) is oil drain passage.Groove (511,512) is the rectangle groove on plunger 51.
Fig. 4 be plunger motion to right end when, the rectangle groove on plunger 51 (511,512) is not low on cylinder body at this time The perpendicular oil duct (121,122) of the perpendicular oil duct (111,112), high pressure oil road 12 that are pressed into oil duct 11 is linked up.
Start to move toward left end while plunger rotation, as shown in figure 5, the rectangle groove (511,512) on plunger point Oil duct (44,45) communication is not connected to second on cylinder body, intracavitary oil is passed through the second connection by the gradually smaller chamber of volume Oil duct (44,45) squeezes out oil liquid.
When plunger continues to rotate, then plunger starts movement of turning right, and chamber begins through the perpendicular oil for linking up low pressure oil input channel 11 Road (111,112), first is connected to 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 Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention also includes art technology Personnel conceive according to the present invention it is conceivable that equivalent technologies mean.

Claims (10)

1. two-dimensional axial plunger pump, it is characterised in that: including for pass in and out oil the first cylinder body, for second with piston valving Cylinder body, plunger assembly, the end for realizing the driving assembly of plunger assembly double freedom movement and for accommodating plunger assembly The first end sealing of lid, first cylinder body and second cylinder body is connected, the second end of second cylinder body and the end cap Sealing is connected;The plunger assembly is contained in the plunger cavity of the end cap, and the plunger assembly and second cylinder Body rotation connection;
First cylinder body is equipped with a low pressure oil input channel and a high pressure oil road, wherein the low pressure oil input channel and fuel feeding Case connection, the high pressure oil road are connected to executive item;
Second cylinder body be equipped with center hub, have two for be connected to low pressure oil input channel first be connected to oil ducts and two with In the second connection oil duct being connected to high pressure oil road, the head end of the center hub is embedded with the cooperation for blocking fabrication hole Part, end are equipped with the first bearing for being used to support plunger assembly;The first connection oil duct and the low pressure oil input channel one are a pair of It answers, the second connection oil duct and the high pressure oil road correspond, i.e., the first connection oil duct is by being opened in oil inlet and outlet cylinder The perpendicular oil duct of the low pressure oil input channel of internal portion Π type is mutually communicated, and the second connection oil duct is by being opened in oil inlet and outlet cylinder interior Π The perpendicular oil duct of the high pressure oil road of type is mutually communicated;
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 perforation, the linkage section for being used to support spring and the construction section for being connected with driving assembly, the Connectivity Section Equipped with a pair of groove for being used for and be connected to oil duct connection and cooperate, and the groove can only be connected to oil duct or described with described first One of second connection oil duct is corresponding to link up;The center hub of the second cylinder body is inserted into the Connectivity Section of the plunger, and described The Connectivity Section outer wall of plunger is fitted closely with the center hub inner wall, and the linkage section passes through first bearing and second cylinder Body rotation connection, and the groove being arranged on the Connectivity Section is located exactly at and can be connected to oil duct and the second connection oil duct ditch with first It is logical;Linkage section of the spring pocket in the plunger, and one end of the spring and the spring that is against on first bearing end face Seat is connected, and the other end is against on the step surface that linkage section and construction section are formed;
The driving component includes shaft coupling, roller shaft, curved cam guide rail and rolling assembly, and the construction section of the plunger passes through Shaft coupling and external driving motor are connected;The construction section of the roller shaft and the plunger is connected, and the roller shaft Both ends are respectively symmetrically installed by rolling assembly;The curved cam guide rail is embedded in the end cap, the curved cam guide rail its In an end face as the smooth surface of rolling for rolling assembly along its surface scrolls, 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 to the groove of the plunger, real Existing plunger pump oil-absorbing process;When rolling assembly moves to the highest point of the smooth surface of rolling, it is described second connection oil duct with it is described The groove of plunger is connected to, and realizes plunger pump oil extraction process.
2. two-dimensional axial plunger pump as described in claim 1, it is characterised in that: second cylinder body is equipped with two described first It is connected to oil duct and two the second connection oil ducts, the first connection oil duct is connected to oil duct along described second with described second Cylinder body axially be arranged, and it is described first connection oil duct outer end, it is described second connection oil duct outer end respectively with the low pressure oil inlet Channel, high pressure oil discharge passage connection, inner end, the described second inner end for being connected to oil duct of the first connection oil duct pass through edge The center of the cross connection oil duct perforation that second cylinder body is arranged radially, the cross connection oil duct is located at the center hub Central axis on, and it is cross connection oil duct every branch be connected to described first oil duct or it is described second be connected to oil duct Connection, the inner end of every branch are connected to the center hub, and the outer end of branch extends to the outside of the second cylinder body, and every It is furnished with a set of sealing element being made of steel ball and pin shaft in the outer end of branch.
3. two-dimensional axial plunger pump as claimed in claim 2, it is characterised in that: the high pressure oil road and the low pressure oil inlet Road is Π type oil duct, and the high pressure oil road and the low pressure oil input channel are in 90 ° of angles, wherein the interconnection of Π 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 oil ducts are penetrated through with the corresponding first connection oil duct cooperation respectively;Two perpendicular oil ducts of high pressure oil road respectively with it is right The the second connection oil duct cooperation perforation answered.
4. two-dimensional axial plunger pump as claimed in claim 2, it is characterised in that: the plunger is two stage steps axis, wherein institute The outer diameter for stating Connectivity Section, the linkage section and the construction section is cumulative;The end of Connectivity Section set there are two along its axially and symmetrically The groove of the rectangle of arrangement;The construction section is equipped with the first U-shaped groove for being caught in roller shaft, and the first U-shaped groove Wall surface be correspondingly provided with positioning pin through-hole.
5. two-dimensional axial plunger 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 positioning pin, the first needle bearing and is used to limit first The axle elastic spring of needle bearing axial movement, the first positioning pin middle part and the middle part of plunger mounting portion and roller shaft are solid Even, first positioning pin is socketed the first needle bearing after running through positioning pin through-hole;The axle elastic spring covers fixed first In the first annular slot of position pin end.
6. two-dimensional axial plunger pump as described in claim 1, it is characterised in that: the shaft coupling includes for being caught in plunger peace The first mounting portion of section and the second mounting portion for connecting with extraneous driving motor are filled, first mounting portion is equipped with the 2nd U The construction section of type groove and the U-shaped groove of third, the plunger is inserted into the second U-shaped groove, and the first needle bearing card In the U-shaped groove of the third;Second mounting portion is the cylinder with rectangle keyway, described in the second mounting portion insertion The centre bore of curved cam guide rail, and be fitted close therewith;The output shaft of external driving motor is inserted into the rectangle keyway, Described in the side wall of curved cam guide rail be equipped with positioning pin jack for being inserted into positioning pin.
7. two-dimensional axial plunger pump as described in claim 1, it is characterised in that: the rolling assembly includes the second needle roller axis Hold, second bearing and the circular table roller housing with center step through-hole, the both ends of roller shaft symmetrically from inside to outside according to Secondary installation the second needle bearing, circular table roller housing and second bearing, the second bearing are stuck in center step through hole, Realize the tight fit of the circular table roller housing and the roller shaft;The idler wheel the tip of the axis is equipped 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 pump as described in claim 1, it is characterised in that: the curved cam guide rail is cylindrical body, institute It states curved cam guide rail to be connected by the second positioning pin and the end cap, and the end towards plunger side of curved cam guide rail Face is rolling surface, and rolling surface is symmetrical smooth arc curved surface, and the smooth arc curved surface sets that there are two highest point and two Minimum point;J for sealing and reducing friction is installed between the curved cam guide rail and the second mounting portion of the shaft coupling Shape outside framework oil seal and deep groove ball bearing.
9. two-dimensional axial plunger pump as claimed in claim 7, it is characterised in that: first bearing and second bearing are thrust Ball bearing.
10. the two-dimensional axial plunger pump as described in claim 1 ~ 9 any one claim, it is characterised in that: the first cylinder body Contact face offer 4 annular seal grooves and a total annular seal groove, wherein four annular seal grooves are arranged described At high pressure oil road and the low pressure oil input channel, a total annular seal groove setting is enclosed in the contact 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 face of end cap is equipped with close for being embedded in The end cap annular seal groove of seal.
CN201611246618.1A 2016-12-29 2016-12-29 two-dimensional axial plunger pump Active CN106837725B (en)

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CN108661874B (en) * 2018-05-11 2019-11-05 浙江工业大学 A kind of shaftless two-dimentional plunger variable electric-motor pump
CN109209819B (en) * 2018-10-16 2020-02-21 嘉兴学院 Piston transmission mechanism and two-dimensional compressor

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CN104791208B (en) * 2015-04-01 2017-01-04 浙江工业大学 Two dimension etc. such as adds at the deceleration guide rail axial poiston pump
CN104791209B (en) * 2015-04-01 2017-01-04 浙江工业大学 TWO-DIMENSIONAL CIRCULAR CYLINDER guide rail axial poiston pump
CN105484962A (en) * 2015-12-18 2016-04-13 浙江工业大学 Two-dimensional dual axial piston pump
CN206562977U (en) * 2016-12-29 2017-10-17 浙江工业大学 Two-dimensional axial plunger pump

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