CN106089621A - Two dimension cone roller piston pump - Google Patents

Two dimension cone roller piston pump Download PDF

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Publication number
CN106089621A
CN106089621A CN201610574741.XA CN201610574741A CN106089621A CN 106089621 A CN106089621 A CN 106089621A CN 201610574741 A CN201610574741 A CN 201610574741A CN 106089621 A CN106089621 A CN 106089621A
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CN
China
Prior art keywords
piston
guide rail
cylinder
chamber
pump
Prior art date
Application number
CN201610574741.XA
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Chinese (zh)
Other versions
CN106089621B (en
Inventor
阮健
金丁灿
申屠胜男
李胜
童成伟
孟彬
Original Assignee
浙江工业大学
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Application filed by 浙江工业大学 filed Critical 浙江工业大学
Priority to CN201610574741.XA priority Critical patent/CN106089621B/en
Publication of CN106089621A publication Critical patent/CN106089621A/en
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Publication of CN106089621B publication Critical patent/CN106089621B/en

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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
    • F04B9/00Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B53/14Pistons, piston-rods or piston-rod 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
    • F04B53/18Lubricating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H25/00Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/08Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
    • F16H25/12Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation along the axis of rotation, e.g. gearings with helical grooves and automatic reversal or cams

Abstract

Two dimension cone roller piston pump, including the pump housing, imbibing hole and outage is had on the pump housing, being provided with pump unit in the pump housing, and pump unit is connected with motor, pump unit includes the cylinder body being fixed in the pump housing, piston it is provided with in cylinder body, the central shaft of cylinder body overlaps with the central shaft of piston, and the two ends of piston are equipped with the triggering device driving piston to move axially to cause working chamber volume, and the device that triggers at piston two ends drives the in opposite direction of piston movement.The guide rail of the present invention is linear contact lay with cone roller, increases the area of Structure deformation, reduces contact stress, be prevented effectively from skidding, also extends the service life of contact component;And lubricating cavity is airtight with work chamber separates, it is achieved that oil-water separation, i.e. it is applicable to oil medium, is applicable to again aqueous medium, expands range.

Description

Two dimension cone roller piston pump
Technical field
The present invention relates to a kind of two dimension cone roller piston pump, belong to the hydraulic pump in Fluid-transmission and control field and hydraulic pressure Motor.
Background technology
Plunger (piston) pump with plunger (piston) and cylinder body as groundwork component.When plunger (piston) is at cylinder body In plunger (piston) hole reciprocating time, the airtight swept volume chamber that is made up of plunger (piston) and cylinder body occurs volume to become Change, complete suction, discharge opeing process.According to the plunger (piston) different spread patterns in cylinder body, plunger (piston) pump is divided into radially Formula and the big class of axial type two.
Traditional common axial plunger (piston) pump relies on plunger (piston) to move back and forth in cylinder body, makes seal operation hold Chamber volume changes and realizes suction, force feed.The part of internal relative motion is many, to Material texture, requirement on machining accuracy height, right Oil contamination is sensitive, the requirement process, use, safeguarded and relatively costly, expensive;Cylinder body rotates with power transmission shaft, turns Dynamic inertia is big, cause starting, stop, the response speed of speed governing slow, be unfavorable for being controlled the output flow of pump by speed governing;Cylinder body Internal friction pair is more, and under high-speed rotation, cylinder body temperature rise is very fast, and the abrasion of the parts such as valve plate, plunger (piston) directly affects pump Service life and durability.In addition, due to the restriction of the operation principle of plunger (piston) pump own, drive axis one In week, each plunger (piston) can only realize an oil suction and an oil extraction, and its discharge capacity is restricted, and needs independent design to join Stream mechanism completes the switching of working volumes suction oil.
The lubricating system of existing plunger displacement pump connects with transfusion system, with the liquid carried as lubricant, and this knot Structure is only suitable for conveying oil, is not suitable for aqueous medium environment.
And water is the liquid that human being's production is the most frequently used with life, thus water-related machinery, especially as Water transfers development always focus of concern and the focus of research of the water pump with energy conversion.Water pump is in principle and structure On be broadly divided into blade (being centrifuged) formula and positive displacement, compared with the former, volumetric water pump has that efficiency is high, power density big and easily The advantage realizing high pressure, is the important development direction of pump technology, accordingly, it is capable to the piston pump realizing water pump function more has reality The property used.
Summary of the invention
In order to overcome the drawbacks described above of prior art, and realizing water pump function, the present invention provides a kind of two dimension cone roller to live Plug pump.
The technical solution used in the present invention is:
Two dimension cone roller piston pump, including the pump housing, the pump housing has imbibing hole and outage, is provided with pump unit in the pump housing, And pump unit is connected with motor,
Pump unit includes the cylinder body being fixed in the pump housing, is provided with piston in cylinder body, the central shaft of cylinder body and the center of piston Axle overlaps, and the two ends of piston are equipped with the triggering device driving piston to move axially to cause working chamber volume, and live The device that triggers at plug two ends drives the in opposite direction of piston movement;
Left chamber that work chamber includes laying respectively at cylinder body two ends and right chamber, the centre of piston is provided with shoulder, shoulder Left side and the guide rail in left side inner chamber of cylinder block enclosure is become airtight left chamber, the right side of shoulder and right rail are by cylinder body Inner chamber enclosure becomes airtight right chamber;Shoulder is provided with two axisymmetric left axial grooves and two axisymmetric right axial grooves, And left axial groove and right axial groove are equidistantly arranged alternately on the circumference of the cross section of piston;Left axial groove is with left chamber even Logical, right axial groove and right chamber;Cylinder body is provided with two axisymmetric left windows and two axisymmetric right windows, with institute The left window of the outage connection stated and the projection on the cross section of cylinder body of the right window that connects with described imbibing hole are along cylinder The circumference of body is equidistantly alternately distributed;
It is substantially symmetrical about its central axis that axial symmetry refers to piston;Axially refer to the direction at the central shaft place of piston, radially refer to The direction at the diameter place in piston cross-section face;
Described triggering device includes guide rail and roller, and guide rail is fixed on the end of cylinder body, and piston runs through guide rail, and piston End is provided with suspension, and suspension connects a pair axisymmetric roller;Guide rail is axial ring-type curved surface, and curved surface rises with axial Volt, described guide rail is circular in the projection of central axis direction, and described curved surface has 2 peaks and 2 minimum points, described Highs and lows lay respectively at described annulus orthogonal two diametrically, described curved surface is respectively in accordance with institute Two diameter symmetry stated;Roller rolls on guide rail, promotes piston to be axially moveable;
The waveform that the curved surface of the guide rail being positioned at piston two ends rises and falls, the most anti-phase;
The waveform of the curved surface of guide rail has following corresponding with the position of left axial groove and right axial groove, left window and right window Relation: first stage guide rail and roller drive piston to be moved to the left, left axial groove alignment left window, liquid is got rid of by left chamber, same Time right axial groove be directed at right window, right chamber suck liquid;Second stage guide rail and roller drive piston to move right, left axial Groove is directed at right window, and left chamber sucks liquid, the rightest axial groove alignment left window, right chamber effluent body;Described guide rail Internal ring side higher than outer rim side;Described roller is cone roller, and the rolling surface of cone roller is adaptive with guide rail;
The suspension triggering one of device at piston two ends is coaxially connected with the motor output shaft penetrated in the pump housing;
Pump housing inner chamber enclosure is become airtight lubricating cavity by the end cap of the pump housing and guide rail, and lubricating cavity is by being opened on the pump housing Lubrication channel connects, and lubrication channel is provided with lubrication hydraulic fluid port.
Further, described left window and right window are positioned at the diverse location of central shaft.
Further, the output shaft of motor connecting and has shift fork, the end of suspension is fixed with driver plate, and driver plate offers stress Groove, shift fork is located in stress groove;The both sides of shift fork are provided with fixing post radially, and on fixing post, fixed cover is provided with bearing, and shift fork leads to Cross bearing and promote driver plate.
Further, cone roller includes that taper wheel case, taper wheel case include that barrel and cone portion, taper wheel case are set in pin On axle, bearing pin is radially located on suspension, is provided with ball bearing, is provided with needle roller between cone portion and bearing pin between barrel and bearing pin Bearing, ball bearing and needle bearing are all set on bearing pin, and will by the thread bush being fastened between needle bearing and bearing pin Ball bearing and needle bearing are locked in taper wheel case, are provided with the first elastic spring, thread bush and cone between thread bush and bearing pin The second elastic spring it is provided with between body.
Further, guide rail is provided with radially installing hole, and left pin penetrates the radial direction in the pump housing, cylinder body and left rail and installs Hole, is fixed on the guide rail of cylinder body and left side on the pump housing, and right pin penetrates the radial direction installing hole on the guide rail on cylinder body and right side, will The guide rail on right side is fixed on cylinder body;Guide rail is provided with the axially mounted hole matched with piston.
Further, suspension is set in the end of piston, and radially fixed on piston by straight pin.
Further, two left windows are connected by the first annular groove on cylinder body, and two right windows are by cylinder body Second cannelure connection.
The triggering device that the present invention uses guide rail to match with cone roller promotes piston axially move and circumferentially rotate, and borrows That helps piston moves axially driving working chamber volume, moving axially and circumferentially rotating and realize flow, i.e. by piston Share out the work chamber imbibition or discharge opeing, eliminates independent flow-distribution mechanism.
Beneficial effects of the present invention is embodied in:
1, guide rail and cone roller are linear contact lay, increase the area of Structure deformation, reduce contact stress, are prevented effectively from and beat Sliding, also extend the service life of contact component.
2, lubricating cavity is airtight with work chamber separates, it is achieved that oil-water separation, is i.e. applicable to oil medium, is applicable to again water Medium, expands range.
3, suspension is suspended on the two ends of piston, has the degree of freedom rotated relative to bearing pin, can be to the cone of bearing pin both sides Roller carries out automatic centering fine setting.
4, the axle used by existing piston pump is integrated with piston, simplifies overall structure, utilizes the circumference of piston Rotationally and axially move and realize flow, eliminate oil distribution casing or Flat valve structure that conventional axial piston pump separately need to configure.
5, continuous liquid sucking-discharging function and flow function can be realized, and reciprocating motion of the pistons is once, single piston liquid sucking-discharging Respectively carrying out twice, single piston rotates a circle and can realize twice reciprocating motion, i.e. four times suctions, discharge opeings, and conventional axial plunger (is lived Plug) pump can only carry out a liquid sucking-discharging, and on the premise of ensureing that flow is constant, the present invention can realize miniaturization, and cost obtains To being substantially reduced.
6, conventional piston pump has piston-cylinder friction pair and flow friction pair, and the present invention only has piston-cylinder friction Pair, improves work efficiency.
7, due to the kinetic characteristic that modular pump is symmetrical, two modular pump series connection can be substantially eliminated flow pulsation.
8, the design of modular pump is used can to realize blocking plug-in mounting, can be by automatically controlled after by binary system flow design plug-in mounting Realize the design of digital pump.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is modular pump structural representation.
Fig. 3 is piston structure schematic diagram.
Fig. 4 be in Fig. 3 A-A to sectional view.
Fig. 5 is housing structure schematic diagram.
Fig. 6 be in Fig. 5 A-A to sectional view.
Fig. 7 be in Fig. 5 B-B to sectional view.
Fig. 8 is the structural representation of the guide rail in left side.
Fig. 9 be in Fig. 8 A-A to sectional view.
Figure 10 is the structural representation of the guide rail on right side.
Figure 11 be in Figure 10 A-A to sectional view.
Figure 12 is the suspension in left side, cone roller and driver plate assembling schematic diagram.
Figure 13 is suspension and the cone roller assembling structure schematic diagram on right side.
Figure 14 is the suspension in left side, cone roller and driver plate assembling structural blast schematic diagram.
Figure 15 is suspension and the cone roller assembling structure exploded perspective view on right side.
Figure 16 is that motor output shaft assembles structural blast schematic diagram with shift fork.
Figure 17 is piston when being positioned at 0 °, modular pump structural representation.
Figure 18 be in Figure 17 A-A to sectional view.
Figure 19 be in Figure 17 B-B to sectional view.
Figure 20 is that piston rotates counterclockwise toTime, modular pump structural representation.
Figure 21 be in Figure 20 A-A to sectional view.
Figure 22 be in Figure 20 B-B to sectional view.
Figure 23 is that piston rotates counterclockwise toTime, modular pump structural representation.
Figure 24 be in Figure 23 A-A to sectional view.
Figure 25 be in Figure 23 B-B to sectional view.
Figure 26 is that piston rotates counterclockwise toTime, modular pump structural representation.
Figure 27 be in Figure 26 A-A to sectional view.
Figure 28 be in Figure 26 B-B to sectional view.
Figure 29 is piston when rotating counterclockwise to π, modular pump structural representation.
Figure 30 be in Figure 29 A-A to sectional view.
Figure 31 be in Figure 29 B-B to sectional view.
Figure 32 is the graph of a relation between roller displacement on guide rail, speed, acceleration and the piston anglec of rotation.
Detailed description of the invention
Referring to the drawings, two dimension cone roller piston pump, including the pump housing 1, the pump housing 1 has imbibing hole and outage, in the pump housing 1 It is provided with pump unit, and pump unit is connected with motor,
Pump unit includes the cylinder body 2 being fixed in the pump housing 1, is provided with piston 3, the central shaft of cylinder body 2 and piston 3 in cylinder body 2 Central shaft overlap, the two ends of piston 3 be equipped with driving piston 3 move axially to cause the triggering of working chamber volume to fill Put, and the device that triggers at piston 3 two ends drives the in opposite direction of piston 3 motion;
Left chamber that work chamber includes laying respectively at cylinder body two ends and right chamber, the centre of piston 3 is provided with shoulder 31, platform Cylinder body 2 inner chamber enclosure is become airtight left chamber by left side and the guide rail 4 in left side of shoulder 31, the right side of shoulder 31 and right side Cylinder body 2 inner chamber enclosure is become airtight right chamber by guide rail 5;Shoulder 31 is provided with two axisymmetric left axial groove e, h and two Axisymmetric right axial groove f, g, and left axial groove e, h and right axial groove f, g equidistantly hand on the circumference of the cross section of piston 3 For arranging;Left axial groove e, h connect with left chamber, right axial groove f, g and right chamber;Cylinder body 2 is provided with two axial symmetry Left window a, c and two axisymmetric right window b, d, left window a, the c connected with described outage and with described suction Right window b, the d of fluid apertures connection projection on the cross section of cylinder body 2 is equidistantly alternately distributed along the circumference of cylinder body 2;
It is substantially symmetrical about its central axis that axial symmetry refers to piston 3;Axially refer to the direction at the central shaft place of piston 3, be radially Refer to the direction at the diameter place of piston 3 cross section;
Described triggering device includes guide rail 4,5 and roller 9,7, and guide rail 4,5 is fixed on the end of cylinder body 2, and piston 3 runs through leads Rail 4,5, and the end of piston 3 is provided with suspension 8,6, and suspension 8,6 connects a pair axisymmetric roller 9,7;Guide rail 4,5 is in axially Ring-type curved surface 41,51, curved surface 41,51 is annulus with axial fluctuating, described guide rail 4,5 in the projection of central axis direction Shape, described curved surface has 2 peaks and 2 minimum points, and described highs and lows lays respectively at described annulus Orthogonal two diametrically, described curved surface is respectively in accordance with two described diameter symmetry;Roller 9,7 rolls on guide rail Dynamic, promote piston 3 to be axially moveable;
The waveform that the curved surface of the guide rail 4,5 being positioned at piston 3 two ends rises and falls, the most anti-phase;
The waveform of the curved surface 41,51 of guide rail 4,5 and left axial groove e, h and right axial groove f, g, left window a, c and right window The position of b, d has following corresponding relation: first stage guide rail 4,5 and roller 9,7 drive piston 3 to be moved to the left, left axial groove E, h are directed at left window a, c, and liquid is got rid of by left chamber, and the rightest axial groove f, g are directed at right window b, d, and right chamber sucks liquid; Second stage guide rail 4,5 and roller 9,7 drive piston 3 to move right, and left axial groove e, h are directed at right window b, d, and left chamber sucks Liquid, the rightest axial groove f, g are directed at left window a, c, right chamber effluent body;
The internal ring side of described guide rail 4,5 is higher than outer rim side;Described roller 9,7 is cone roller, the rolling surface of cone roller Adaptive with guide rail 4,5;
The suspension 8 triggering one of device at piston 3 two ends is coaxially connected with the motor output shaft 20 penetrated in the pump housing 1;This In embodiment, the suspension 8 in left side is connected with motor output shaft 20.
The pump housing 1 inner chamber enclosure is become airtight lubricating cavity by the end cap 12,30 of the pump housing 1 and guide rail 4,5, and lubricating cavity is by offering Lubrication channel on the pump housing 1 connects, and lubrication channel is provided with lubrication hydraulic fluid port.
Described left window a, c and right window b, d are positioned at the diverse location of central shaft, left window a, c position in the present embodiment In the left side of cylinder body, right window b, d are positioned at the right side of cylinder body 2.
Connecting on the output shaft 20 of motor has shift fork 18, the end of suspension 8 to be fixed with driver plate 81, driver plate 81 offers and is subject to Power groove 811, shift fork 18 is located in stress groove 811;The both sides of shift fork 18 are provided with fixing post radially, and on fixing post, fixed cover is provided with Bearing 82, shift fork 18 promotes driver plate 81 by bearing 82.
Cone roller 9,7 includes that taper wheel case 91,71, taper wheel case 91,71 include barrel and cone portion, taper wheel case 91,71 being set on bearing pin 16,17, bearing pin 16,17 is radially located on suspension 8,6, is provided with between barrel and bearing pin 16,17 Thrust bearing 92,72, is provided with needle bearing 93,73, thrust bearing 92,72 and needle bearing between cone portion and bearing pin 16,17 93,73 be all set on bearing pin 16,17, and by the thread bush 95 being fastened between needle bearing 93,73 and bearing pin 16,17, 75 are locked in taper wheel case 91,71, are provided with the first elastic spring 96,76, screw thread between thread bush 95,75 and bearing pin 16,17 Being provided with the second elastic spring 94,74 between set 95,75 and cone portion, act the effect limiting needle bearing, thrust bearing 92,72 holds The axial force of load taper wheel case 91,71, needle bearing 93,73 undertakes the radial force of taper wheel case 91,71, such as Figure 12, Tu13Suo Show.
Guide rail 4,5 is provided with radially installing hole 42,52, and left pin 13 penetrates the radial direction in the pump housing 1, cylinder body 2 and left rail 4 Installing hole 42, is fixed on the guide rail 4 in cylinder body 2 and left side on the pump housing 1, and right pin 14 penetrates the footpath in cylinder body 2 and right rail 5 To installing hole, the guide rail 5 on right side is fixed on cylinder body 2;The axially mounted hole matched with piston 3 it is additionally provided with on guide rail 4,5.
Suspension 8,6 is set in the end of piston 3, and radially fixed on piston 3 by straight pin 97,77.
Two left windows a, c are connected by the first annular groove 21 on cylinder body 2, and two right window b, d are by cylinder body 2 Second cannelure 22 connects, to converge fluid, it is simple to fluid converges in the pump housing.
The left end of the pump housing 1 is installed with end cap 12, between end cap 12 and the motor output shaft 20 in left side by bolt 11 The second lattice sealed are installed and enclose 27 and for supporting the deep groove ball bearing 28 of motor output shaft 20, and motor output Axle 20 is fixed on left end cap 12 by jump ring 29.
Shift fork 18 is fixed on one end of motor output shaft, motor by pin 19, spring shim 84 and the 4th elastic spring 85 The other end of output shaft 20 is connected with motor by shaft coupling.Bearing 82 is enclosed within the fixing post of shift fork 18 both sides, and by the 3rd Elastic spring 81 is fixed.Bearing 82 uses deep groove ball bearing, and is arranged with bearing holder (housing, cover) 83.
Cylinder body 2 is provided with and radially installing hole 42,52 second installing hole 43,53 one to one;Guide rail 4,5 be provided with Cylinder body 2 coordinates the groove 44,54 for installing O-ring seals 21,24, guide rail 4,5 is additionally provided with and coordinates for installing with piston 3 The groove 44,55 of Glais ring 23,26.
When motor shift fork 18 rotates counterclockwise, shift fork 18 transfers torque to bearing 82, and bearing 82 rotates, and drives and turns Dish 81 rotates, and the suspension 8 on the left of rotating disk 81 drive rotates, and the cone roller 9 on left side suspension 8 rotates along left rail 4.
Two peak m and two axisymmetric minimum points n alternately it are provided with, when cone roller 9,7 is from minimum point on guide rail 4,5 N when adjacent peak m moves, cone roller 9,7 can extrude guide rail 4,5, guide rail 4,5 to cone roller 9,7 counteracting force together with Step drives piston 3 axially-movable.And when boring roller 9,7 and moving to adjacent minimum point n from peak m, guide rail 4,5 can crush cones Roller 9,7, the counteracting force of cone 9,7 pairs of guide rails 4,5 of roller can synchronize to drive piston 3 axially-movable.
The waveform risen and fallen due to the curved surface of the guide rail 4,5 at piston 3 two ends is the most anti-phase, i.e. when the cone roller of side is from minimum Point n is when peak m moves, and the cone roller of opposite side just moves to minimum point n from peak m, promotes piston to same Direction moves axially.
On guide rail 4,5, the region between adjacent minimum point n and peak m constitutes a motion interval, each motor region Between corresponding central angle beIn each motion is interval, piston 3 realizes an axially-movable in one direction, adjacent motion The direction of motion of interval inner carrier 3 is contrary.And owing to the shape of the interval negative camber of each motion is identical, adjacent motion interval The waveform of curved surface is anti-phase so that piston 3 is moved to the left and moves right has identical rate curve.
Preferably, the shape of guide rail 4,5 can be made to make piston meet parabolic motion, i.e. in each motor region In, in the first half section in this interval, piston 3 accelerates with identical acceleration, and in the second half section in this interval, piston subtracts with identical Speed reduction so that piston 3 is moved to the left and moves right has identical accelerating curve, and sudden change of acceleration is less so that Piston is less to the impact of cylinder body.Guide rail 4,5 in hollow cylindrical, the curved surface 41 of rolling surface and the guide rail 4,5 of cone roller 9,7, 51 fit, it is ensured that the extended line of the taper cone pulley profile of two cone rollers 9,7 is intersected in a bit, then ensures suspension 8,6 both sides Cone roller 9,7 intersects at a point with the central axis of piston 3 with the extended line of the fitting line of guide rail 4,5, can make suspension 8,6 liang It is minimum that the cone roller 9,7 of side contacts the difference between the linear velocity on line with guide rail 4,5, skids when preventing from rotating.
Two axisymmetric left axial groove e, h and two axisymmetric right axial grooves are alternately offered on the surface of shoulder 31 F, g, left axial groove e, h connect with left chamber all the time, right axial groove f, g all the time with right chamber.
When guide rail 4,5 and roller 9,7 drive piston 3 to move axially to the left, left chamber diminishes, and right chamber becomes big, simultaneously During guide rail 4,5 and roller 9,7 drive piston 3 to circumferentially rotate, left axial groove e, h are directed at left window a, c, left chamber's warp Cross through left axial groove e, h and left window a, c to exterior liquid;Right axial groove f, g are directed at right window b, d, and left chamber is through passing through Logical right axial groove f, g and right window b, d suck liquid,
When guide rail 4,5 and roller 9,7 drive piston 3 to move axially to the right, left chamber becomes big, and right chamber diminishes, simultaneously During guide rail 4,5 and roller 9,7 drive piston 3 to circumferentially rotate, left axial groove e, h are directed at right window b, d, left chamber's warp Cross through left axial groove e, h and the right inside imbibition of window b, d;Right axial groove f, g are directed at left window a, c, and left chamber is through passing through Logical right axial groove f, g and left window a, c are to exterior liquid.
Sealed by O RunddichtringO 21,24 between cylinder body 2 and guide rail 4,5, and be also arranged with anti-outside O RunddichtringO 21,24 Only the back-up ring 22,25 of O RunddichtringO 21,24 deformation, is sealed by the first Glais ring 23,26 between piston 3 and guide rail 4,5, with Ensure left chamber, the sealing of right chamber.
Being sealed by the second Glais ring 27 between output shaft 20 and the end cap 12 of motor, lubricating cavity separates with work chamber, Lubricating cavity can provide independent lubricating to triggering device.When the present invention is used for carrying water, in the oil in lubricating cavity and work chamber Water can completely separated, will not pollute mutually, it is achieved oil-water separation.
Lubricating cavity is by lubrication hydraulic fluid port make-up oil.
It is the plug of plane that two end mills of piston 3 put down formation side, and has level in the plane formed after milling is flat First radial hole 32, the left end of suspension 8,6 all offers the trepanning suitable with plug, the both sides of this trepanning and piston 3 end The plane that milling becomes fits, and there is gap between the flat cambered surface of the non-milling of piston 3;Have on suspension 8,6 and the first radial hole 32 The second through radial hole 82,62, the plug at piston 3 two ends inserts in the trepanning of suspension 8,6 respectively, then straight pin is inserted the In one radial hole 32 and the second radial hole 82,62, so that suspension 8,6 is fixed on piston 3, and due to pistons end and suspension set Leave gap at the cambered surface in hole so that suspension 8,6 has a degree of freedom slightly swung around straight pin 97,77, bore roller 9,7 Be arranged on bearing pin 17,16, bearing pin 17,16 axially and being axially mutually perpendicular to of straight pin 97,77, by around straight pin 97, 77 swinging suspensions 8,6, can carry out balance adjustments placed in the middle to the cone roller 9,7 at suspension 8,6 two ends, so that the cone roller 9,7 at two ends All it is close to guide rail 4,5.
Be a working cycle with piston rotating 360 degrees, in an initial condition, left and right window a, b, c, d with left and right axially Groove e, f, g, h stagger mutually, do not produce communication, and the cone roller 9 on the suspension 8 in left side is positioned at minimum point n on guide rail 4, right The peak m that cone roller 7 on side suspension 6 is positioned on guide rail 5, definition now cone roller 9,7 and piston 3 are respectively positioned on 0 °, such as figure Shown in 17-Figure 19, present invention workflow within a working cycle (0~2 π) is:
1) move to from 0 ° along guide rail 4,5 when cone roller 9,7Time, the cone roller 9 on left side suspension 8 from minimum point n to High point m is moved, and the cone roller 7 on right side suspension 6 moves to minimum point n from peak m, drives piston 3 to be moved to the left, left chamber Diminishing, right chamber becomes big.
Along with circumferentially rotating of piston 3, left window a, c start to overlap and through with left axial groove e, h, meanwhile, and right window B, d also begin to overlap and through with right axial groove g, f;When piston 3 rotates toTime, left window a, c pass through with left axial groove e, h's Logical area reaches maximum, and right window b, d also reach maximum with the through area of right axial groove g, f, and piston 3 reaches middle position, such as figure 20, shown in 21,22.
When cone roller 9,7 along guide rail 4,5 continue fromMove toTime, left window a, c and the through-plane of left axial groove e, h Long-pending beginning reduces, and right window b, d also begin to reduce with the through area of right axial groove g, f, and piston 3 continues lateral movement of turning left.
When cone roller 9,7 rotates toTime, piston 3 reaches high order end, and left window a, c stagger with left axial groove e, h, overlaps Area makes zero, and right window b, d also make zero, as shown in Figure 23,24,25 with right axial groove g, f overlapping area.
Move to from 0 ° at cone roller 9,7Whole during, piston 3 to left movement, left axial groove e, h and left window A, c are the most through and constitute a-e passage, c-h passage, right axial groove g, f the most through with right window b, d and constitute b-g passage, D-f passage;Left chamber is passed through to pump housing exterior liquid, right chamber all the time through a-e passage, c-h passage outage on the pump housing 1 B-g passage, the imbibition from the pump housing of the imbibing hole from the pump housing 1 of d-f passage.The present invention realizes inhaling for the first time, discharge opeing.
2) when cone roller 9,7 along guide rail 4,5 fromWhen moving to π, the cone roller 9 on left side suspension 8 from peak m to Low spot n moves, and the cone roller 7 on right side suspension 6 moves to peak m from minimum point n, drives piston 3 to move right vertically, Left chamber becomes big, and right chamber diminishes.
Along with circumferentially rotating of piston 3, right window b, d start to overlap and through with left axial groove e, h, meanwhile, and left window A, c also begin to overlap and through with right axial groove g, f.When piston 3 rotates toTime, right window b, d are through with left axial groove e, h Area is maximum, and left window a, c are the most maximum with the through area of right axial groove g, f, and piston 3 reaches middle position, such as Figure 26,27,28 institute Show.
When cone roller 9,7 along guide rail 4,5 continue fromWhen moving to π, right window b, d and the through-plane of left axial groove e, h Long-pending beginning reduces, and left window a, c also begin to reduce with the through area of right axial groove g, f, and piston 3 continues motion of turning right.
When boring roller 9,7 and turning to π, piston 3 arrives low order end, and right window b, d stagger with left axial groove e, h, through Area makes zero, and left window a, c also make zero with the through area of right axial groove g, f, as shown in Figure 29,30,31.
Cone roller 9,7 from fromDuring moving to π, piston 3 moves right, right window b, d and left axial groove e, h The most through and constitute b-e passage, d-h passage, left window a, c are the most through with right axial groove g, f and constitute a-f passage, c-g Passage, left chamber through b-e passage, the imbibition from the pump housing of d-h passage, right chamber through a-f passage, c-g passage to pump housing exterior liquid, The present invention realize second time inhale, discharge opeing.
3) move to from π along guide rail when cone rollerTime, move to from 0 ° along guide rail with cone rollerPiston 3 is transported to the left Dynamic, the present invention realize third time inhale, discharge opeing.
4) when cone roller along guide rail fromWhen moving to 2 π, with cone roller along guide rail fromMoving to π, piston 3 is transported to the right Dynamic, the present invention realizes the 4th suction, discharge opeing.
The present invention is circumferentially rotated, by piston 3, the switching being implemented in combination with liquid sucking-discharging chamber and continuous print moved with circumference Liquid sucking-discharging, eliminates independent flow-distribution mechanism;And once circumferentially rotate, it is achieved that four imbibitions, four discharge opeings.
When the shape of guide rail 4,5 makes piston meet parabolic motion, piston within a working cycle, The axial displacement of piston, speed, the acceleration relation corresponding with rotational angle is as shown in figure 32.
Content described in this specification embodiment is only enumerating of the way of realization to inventive concept, the protection of the present invention Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology Personnel according to present inventive concept it is conceivable that equivalent technologies means.

Claims (7)

1. two dimension cone roller piston pump, including the pump housing, the pump housing has imbibing hole and outage, is provided with pump unit in the pump housing, and Pump unit is connected with motor, it is characterised in that:
Pump unit includes the cylinder body being fixed in the pump housing, is provided with piston in cylinder body, the central shaft of cylinder body and the central shaft weight of piston Closing, the two ends of piston are equipped with the triggering device driving piston to move axially to cause working chamber volume, and piston two The device that triggers of end drives the in opposite direction of piston movement;
Left chamber that work chamber includes laying respectively at cylinder body two ends and right chamber, the centre of piston is provided with shoulder, a left side for shoulder Inner chamber of cylinder block enclosure is become airtight left chamber by end face and the guide rail in left side, and the right side of shoulder and right rail are by inner chamber of cylinder block Enclosure becomes airtight right chamber;Shoulder is provided with two axisymmetric left axial grooves and two axisymmetric right axial grooves, and left Axial groove and right axial groove are equidistantly arranged alternately on the circumference of the cross section of piston;Left axial groove connects with left chamber, right Axial groove and right chamber;Cylinder body is provided with two axisymmetric left windows and two axisymmetric right windows, with described The left window of outage connection and the right window that connect with described imbibing hole projecting along cylinder body on the cross section of cylinder body Circumference is equidistantly alternately distributed;
It is substantially symmetrical about its central axis that axial symmetry refers to piston;Axially refer to the direction at the central shaft place of piston, radially refer to piston The direction at the diameter place of cross section;
Described triggering device includes guide rail and roller, and guide rail is fixed on the end of cylinder body, and piston runs through guide rail, and the end of piston It is provided with suspension, suspension connects a pair axisymmetric roller;Guide rail is axial ring-type curved surface, curved surface with axial fluctuating, Described guide rail is circular in the projection of central axis direction, and described curved surface has 2 peaks and 2 minimum points, described Highs and lows lay respectively at described annulus orthogonal two diametrically, described curved surface is respectively in accordance with described Two diameter symmetry;Roller rolls on guide rail, promotes piston to be axially moveable;
The waveform that the curved surface of the guide rail being positioned at piston two ends rises and falls, the most anti-phase;
The waveform of the curved surface of guide rail has the most corresponding closing with the position of left axial groove and right axial groove, left window and right window System: first stage guide rail and roller drive piston to be moved to the left, left axial groove alignment left window, liquid is got rid of, simultaneously by left chamber Right axial groove is directed at right window, and right chamber sucks liquid;Second stage guide rail and roller drive piston to move right, left axial groove Being directed at right window, left chamber sucks liquid, the rightest axial groove alignment left window, right chamber effluent body;Described guide rail Internal ring side is higher than outer rim side;Described roller is cone roller, and the rolling surface of cone roller is adaptive with guide rail;
The suspension triggering one of device at piston two ends is coaxially connected with the motor output shaft penetrated in the pump housing;
Pump housing inner chamber enclosure is become airtight lubricating cavity by the end cap of the pump housing and guide rail, and lubricating cavity is by the lubrication being opened on the pump housing Channel connection, and lubrication channel is provided with lubrication hydraulic fluid port.
2. two dimension cone roller piston pump as claimed in claim 1, it is characterised in that: during described left window and right window are positioned at The diverse location of mandrel.
3. two dimension cone roller piston pump as claimed in claim 2, it is characterised in that: connect on the output shaft of motor and have shift fork, The end of suspension is fixed with driver plate, and driver plate offers stress groove, and shift fork is located in stress groove;The both sides of shift fork are provided with radially Fixing post, on fixing post, fixed cover is provided with bearing, and shift fork promotes driver plate by bearing.
4. two dimension cone roller piston pump as claimed in claim 3, it is characterised in that: cone roller includes taper wheel case, taper cone pulley Set includes that barrel and cone portion, taper wheel case are set on bearing pin, and bearing pin is radially located on suspension, barrel and bearing pin it Between be provided with ball bearing, be provided with needle bearing, ball bearing and needle bearing between cone portion and bearing pin and be all set on bearing pin, and lead to Cross the thread bush being fastened between needle bearing and bearing pin ball bearing and needle bearing to be locked in taper wheel case, thread bush with It is provided with the first elastic spring between bearing pin, between thread bush and cone portion, is provided with the second elastic spring.
5. two dimension cone roller piston pump as claimed in claim 4, it is characterised in that: guide rail is provided with radially installing hole, left pin Penetrating the radial direction installing hole in the pump housing, cylinder body and left rail, be fixed on the pump housing by the guide rail of cylinder body and left side, right pin is worn Enter the radial direction installing hole on the guide rail on cylinder body and right side, the guide rail on right side is fixed on cylinder body;Guide rail is provided with and piston phase The axially mounted hole coordinated.
6. two dimension cone roller piston pump as claimed in claim 5, it is characterised in that: suspension is set in the end of piston, and leads to Cross straight pin radially fixed on piston.
7. two dimension cone roller piston pump as claimed in claim 6, it is characterised in that: two left windows are by first on cylinder body Cannelure connects, and two right windows are connected by the second cannelure on cylinder body.
CN201610574741.XA 2016-07-19 2016-07-19 Two-dimentional cone roller piston pump CN106089621B (en)

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PCT/CN2016/105811 WO2018014472A1 (en) 2016-07-19 2016-11-15 Two-dimensional tapered roller piston pump

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WO2018014472A1 (en) * 2016-07-19 2018-01-25 浙江工业大学 Two-dimensional tapered roller piston pump
CN107747531A (en) * 2017-04-25 2018-03-02 北京空天技术研究所 A kind of two-dimentional piston oil transfer pump
CN108194298A (en) * 2017-12-29 2018-06-22 浙江工业大学 A kind of two-dimentional plunger hydraulic pamp of water-oil separating formula rolling wheel guide rails transmission
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WO2018014472A1 (en) * 2016-07-19 2018-01-25 浙江工业大学 Two-dimensional tapered roller piston pump
CN107747531A (en) * 2017-04-25 2018-03-02 北京空天技术研究所 A kind of two-dimentional piston oil transfer pump
CN108194298A (en) * 2017-12-29 2018-06-22 浙江工业大学 A kind of two-dimentional plunger hydraulic pamp of water-oil separating formula rolling wheel guide rails transmission
CN108331890A (en) * 2017-12-29 2018-07-27 浙江工业大学 A kind of space cam Self-aligning transmission mechanism of two dimension plunger pump
CN108457828A (en) * 2017-12-29 2018-08-28 浙江工业大学 A kind of two-dimentional plunger pump of static pressure slider roller and guide rail transmission
CN108194298B (en) * 2017-12-29 2019-07-05 浙江工业大学 A kind of two-dimentional plunger hydraulic pamp of water-oil separating formula rolling wheel guide rails transmission

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