CN107747531A - A kind of two-dimentional piston oil transfer pump - Google Patents

A kind of two-dimentional piston oil transfer pump Download PDF

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Publication number
CN107747531A
CN107747531A CN201710275241.0A CN201710275241A CN107747531A CN 107747531 A CN107747531 A CN 107747531A CN 201710275241 A CN201710275241 A CN 201710275241A CN 107747531 A CN107747531 A CN 107747531A
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CN
China
Prior art keywords
piston
oil
pump
cylinder
drive
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Granted
Application number
CN201710275241.0A
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Chinese (zh)
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CN107747531B (en
Inventor
阮健
关成启
李胜
童成伟
邵文清
王灵锋
郭帅帅
潘成剑
路超
张振炎
张亚娟
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Beijing Aerospace Technology Research Institute
Zhejiang University of Technology ZJUT
Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
Original Assignee
Beijing Aerospace Technology Research Institute
Zhejiang University of Technology ZJUT
Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
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Priority to CN201710275241.0A priority Critical patent/CN107747531B/en
Publication of CN107747531A publication Critical patent/CN107747531A/en
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Publication of CN107747531B publication Critical patent/CN107747531B/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
    • F04B7/00Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • F04B7/06Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports the pistons and cylinders being relatively reciprocated and rotated
    • 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
    • F04B1/14Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/16Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having two or more sets of cylinders or pistons
    • 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
    • F04B53/16Casings; 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
    • 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
    • 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
    • F04B9/04Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms

Abstract

The present invention proposes a kind of two-dimentional piston oil transfer pump, including pump case, left and right end cap, left pump core, right pump core, motor coupler and intermediate shaft coupling, left and right pump core is placed in pump case and it is connected with pump case by the way that left and right end cap is spacing, and left pump core, right pump core are connected and are driven by intermediate shaft coupling.The special transmission of the present invention and oil circuit design so that the pump housing, the structure optimization of cylinder body, manufacture simplification, loss of weight is obvious, is advantageous to the miniaturization of pump.

Description

A kind of two-dimentional piston oil transfer pump
Technical field
The present invention relates to a kind of two-dimentional piston oil transfer pump, belong to fuel pump and motor technologies field.
Background technology
The function of oil transfer pump is to convey the fuel oil of certain flow and pressure to atomizer from fuel tank, is a kind of by prime mover Mechanical energy is converted into the machinery of pressure energy.Gear type, diaphragm type, vane type and piston type in existing machinery formula fuel transfer system The defects of oil absorbency is poor, and efficiency is low, and structure is more complicated, and dimensional weight is relatively large all be present in oil transfer pump.
Two-dimentional piston oil transfer pump is the pump of the new structure based on two-dimentional (2D) motion principle design, and it not only simplify biography The structure of the system pump housing, also breaches restriction of the friction pair (fricton-tight friction pair) to pump performance etc..Patent US4854837A, All disclose a kind of in US20040101426A1, US7887308B2 and CN101387276 while move reciprocatingly and rotate fortune Dynamic two-dimentional piston pump.Wherein US4854837A is limited by the cam face of rotor (piston) cam face and stator (pump housing) Fit structure realizes the reciprocating motion of rotor;US20040101426A1 passes through the spacer pin on housing and rotor outer circle surface S types The fit structure of conduit realizes the reciprocating motion of rotor;Friction between the two-dimentional piston pump kinematic pair of both forms is all sliding Dynamic friction, in the case of high speed and high pressure, this kind of structure occurs that serious wear and mechanical efficiency drastically reduce. The rotor that US7887308B2 is proposed be do it is two-way swing, having used two to drive realizes the two dimensional motion of piston, this Structure is unable to high speed.CN101387276 proposes the two-dimentional piston pump of a kind of fixed idler whell and movable cam fit structure, energy Enough realize the High voltage output of pump, but it enters fuel-displaced unidirectional, and using in line check valve and oil outlet one-way valve, rotating speed is restricted and machine Tool efficiency is relatively low.
Patent CN105484962 proposes a kind of two-dimentional duplex axial poiston pump, using the joint-track type kind of drive, realizes two Tie up the reciprocal of piston and rotation.The patent joint-track type drive mechanism complex designing, processing difficulties, the precision of drive mechanism part are difficult to Ensure, and then influence the transmission effect of whole piece driving-chain between pump core, cause flow pulsation to be not up to ideal value;Two-dimentional piston chi It is very little larger, so as to determine that the radius of gyration of pump core rotor is excessive, heavier mass, it is unfavorable for the high speed of pump;Oil inlet and outlet stream Road is designed in the pump housing, adds the difficulty of processing and appearance and size of the pump housing;Critical seal position relies on the band that contact surface coordinates Sealing make it that the sealing effectiveness of pump is poor, influenced by ambient temperature big, influences the performance of pump;Joint-track type piston piston at high speed There is metal and be adhered phenomenon in extension bar and guide rail contacting surface, easily cause seizure of piston.
The content of the invention
It is an object of the invention to overcome prior art insufficient, there is provided one kind have compact-sized, small in volume, Self-priming performance is good, efficiency high, flow continuous uniform, the two-dimentional piston oil transfer pump suitable for high speed and high pressure situation.
The technical solution of the present invention:A kind of two-dimentional piston oil transfer pump, including:Pump case, left and right end cap, left pump core, the right side Pump core, motor coupler and intermediate shaft coupling, described left pump core include left cylinder, left piston, two groups of Left Drive wheel assemblies, two Group rolls left wheel assembly and a pair of left cams, and it is right that described right pump core includes right cylinder body, right piston, two groups of right roll wheel assemblies and a pair Cam;
Described left cylinder is frustum cone structure, and the central axial machining center through hole of round platform, it is some right that left cylinder end face processes Claiming the hole of distribution, radial center position is provided with annular oil groove as oil discharge passage on outer circumference surface, described as fuel feed hole Central through hole inner peripheral surface radially processes 2 oil entered windows and 2 oil extraction windows, and oil entered window and oil extraction window are in circumference Uniformly and it is interspersed on face, wherein oil entered window penetrates with fuel feed hole e respectively, but does not run through with annular oil groove f, is formed with this Oil inlet passage, fluid realize oil suction, oil extraction window from the oil inlet suction on right end cap by the flow of fuel feed hole and oil entered window Mouth penetrates to be run through to the annular oil groove f of oil discharge passage but not with fuel feed hole e interference, and oil discharge passage is formed with this;
The wheel assembly that rolls left of described every group includes rolling left wheel shaft and roller, and the both ends for the wheel shaft that rolls left are separately installed with a pair of rollings Wheel;Every group of described Left Drive component includes Left Drive rolling hitch component and drive, and drive passes through Left Drive rolling hitch member end Four roller shafts in face are symmetrically mounted on Left Drive rolling hitch component two-by-two;Shoulder, shoulder are provided among described left piston Both ends of the surface center stretch out piston extension bar respectively, oil entered window and row of the processing with left cylinder on the outer circumference surface of the shoulder Groove corresponding to oily window, when piston rotates, with oil entered window or oil extraction window intermittent communication can occur for groove, realize and inhale Oil extraction flow function;
A pair described of left cams are separately mounted on the left and right end face of left cylinder, and the center of left piston through left cylinder leads to Hole and a pair of left cams, the wheel shaft that rolls left are arranged in Left Drive rolling hitch component, and the piston extension bar at left piston both ends is by rolling left Wheel shaft and Left Drive rolling hitch component are respectively fixedly connected with one group of roll left wheel assembly and Left Drive component, the roller to roll left on wheel assembly Contact, and can be rolled on left cam with the fitting of left cam curved surface;
Described right cylinder body, right piston, right roll wheel assembly and right cam structure and left cylinder, left piston, Left Drive wheel group Part is identical with left cam, and described a pair right cams are separately mounted on the left and right end face of right cylinder body, and right piston passes through right cylinder body Central through hole and a pair of right cams, the piston extension bar at right piston both ends is respectively fixedly connected with one group of right rolling by right roller shaft Wheel assembly, the roller on right roll wheel assembly contacts with the fitting of right cam curved surface, and can be rolled on right cam;
Described motor coupler and one end of intermediate shaft coupling are shifting fork structure;Processing and left and right cylinder on described pump case Fuel-displaced circular passage corresponding to annular oil groove on body, connect between fuel-displaced circular passage, and the oil-out with being processed on pump case Connection;The shift fork of described motor coupler is arranged on the Left Drive component of left end between two drives of end face In gap, the shift fork of intermediate shaft coupling is arranged on the Left Drive component of right-hand member with the gap between two drives of end face, The other end is connected with right piston left end;Described left and right pump core is placed in the pump housing by the shoulder on the cylinder body of left and right and passes through left and right End cap is spacing to make it be fastenedly connected with pump case.
The annular fuel-displaced circular passage of present invention processing connection in pump case, is formed with loading the left and right pump core in pump case Closed fuel-displaced path, fuel feed hole runner, rational deployment oil circuit, with existing two dimension are processed on the cylinder body of left and right pump core Joint-track type piston oil transfer pump is compared, and pump case processing is more prone to, structure is simpler so that pump case can be designed to thin-wall construction, outside Shape size reduces, and loss of weight is obvious, and the overall structure of cylinder body pump while loss of weight also becomes compacter;It is in addition, so compact Structure, while avoid existing two-dimentional joint-track type piston oil transfer pump due to structure constraint, the close of interference fit can only be used mostly Seal structure, symmetrical O-ring seals groove is had in cylinder body annular oil groove left and right sides, by the side for installing O-ring seals Formula ensures the sealing of oil discharge passage, can effectively improve the volumetric efficiency of pump.
Described left and right pump core has 45 ° of phase difference on mounting plane, realizes that two pump cores are defeated by this phase difference The total flow continuous uniform gone out is steady.
The present invention is using motor coupler, left pump core transmission component, intermediate shaft coupling, right pump core piston drive route, knot Motor coupler and the shifting fork structure of intermediate shaft coupling is closed with two rollers on the same end face of left pump core transmission component to coordinate, Connection gearing is played, one of roller is used for transmitting the moment of torsion of above-mentioned shaft coupling shift fork, and another roller is then used for Circumferential play of the above-mentioned shaft coupling shift fork in transmission is limited, ensures the stationarity of whole pump core driving-chain.Using the present invention's Type of belt drive, compared with the joint-track type kind of drive, although increased the overall transmission chain size of pump on axial length, by In the optimization of cylinder body of the present invention, piston, pump case in structure, the axial length of its whole pump has greatly reduced, and therefore, uses The kind of drive of the present invention does not have obvious influence for the pump axial length after optimization;Further, because the present invention is driven Simple in construction, the precision of processing greatly improves, and in assembling, more can readily ensure that two pump cores are staggering on 45 ° of phase differences Precision so that the output flow pulsating energy of pump reaches Theoretical Design value.
The dirty hole of receiving for accommodating fluid dirt is offered on described piston extension bar, for preventing larger foreign matter anyway Plug, described to receive dirty hole in spiral distribution on the piston extension bar periphery, every on the piston extension bar for ensuring Band seal length at one axial cross section is unlikely to too small, so as to influence the sealing effectiveness at the piston extension bar.
Inventive piston is in the case where discharge capacity needed for pump is certain, compared with two-dimentional joint-track type piston oil transfer pump, piston chi Very little shape is smaller, is advantageous to high speed;During work, ditch occurs for oil-feed on groove and cylinder body or oil extraction window in piston land It is logical, realize the flow of fluid:The chamber that volume becomes larger all the time all can be by above-mentioned piston channel with being penetrated on above-mentioned cylinder body Oil entered window to suction passage aperture is linked up so as to from fuel tank oil suction;The chamber that volume tapers into all the time all can be by above-mentioned Piston channel and the oil extraction window of insertion on above-mentioned cylinder body to annular groove are linked up so as to which fluid be discharged.
Described two left cams or two right cams are mounted opposite, and are staggeredly arranged in installation site in 90 °.
Described left and right cam is in cylinder, and to wait acceleration or waiting deceleration parabola, left and right cam will have identical song Face changing rule, the top surface of described cylinder has the arc-shaped curved surface of outwardly convex, and described arc-shaped curved surface is minimum The mounting hole being connected with cylinder body is symmetrically arranged with the cylinder at point both ends;The center of described cylinder offers stretches with piston The through hole that rod coordinates, copper ring is installed on through hole;The cylinder circumferencial direction of the cam is provided with ring-shaped groove, is provided with O Shape sealing ring.
The groove corresponding with oil-feed on cylinder body and oil extraction window being evenly arranged is offered on described left and right piston face, And the notch position of groove is staggeredly arranged in circumferencial direction;Groove and the equally distributed oil-feed set on cylinder body and row Oily window is mutually paired communication, and the width of the width of the piston channel and the oil-feed on the cylinder body and oil extraction window is consistent 's.
Symmetrical O-ring seals groove is had at left and right sides of the annular oil groove of described left and right cylinder body, by installing O The mode of shape sealing ring ensures the sealing of oil discharge passage, can effectively improve the volumetric efficiency of pump.
The space that described left cam, piston left end and cylinder body enclose jointly forms left chamber, described right cam, piston The space that right-hand member and cylinder body enclose jointly forms right chamber room, and the O-ring seals installed on the left and right cam cause left and right chamber The sealing of room greatly improves, and improves the suction oil efficiency of pump.The volume of left chamber and right chamber room with piston reciprocating motion Staggeredly change;When piston is axially moved from high order end toward low order end, left chamber's volume becomes larger, and right cavity volume gradually becomes It is small;Similarly, when piston is axially moved from low order end toward high order end, right cavity volume becomes larger, and left chamber's volume gradually becomes It is small.
Further, described motor coupler is arranged on by back-up ring and is provided with the left end cap of through hole;Described left end Oil sealing, copper sheet and axle that frictional force for sealing and reducing shaft coupling and end cap acts on are installed between lid and motor coupler Hold;The left end of described motor coupler is provided with the rectangle keyway coordinated with motor.
The annular groove for placing O-ring seals is offered on described left and right end cap.
Described left and right cam is fixed on cylinder body by alignment pin respectively.
The drive of described driving pulley assembly and the roller of roll wheel assembly respectively by wheel case, rolling bearing, alignment pin and Lock washer is formed.
The operation principle of the present invention:
The piston of left and right pump core is fixed together with roll wheel assembly, driving pulley assembly by alignment pin, and motor passes through motor The roller that shaft coupling is transferred torque on driving pulley assembly, driving pulley assembly is driven to rotate, while the roller group connected with it Part rolls on cam;Driving pulley assembly promotes piston longitudinally rotating motion, and the roll wheel assembly rolled on cam is again Promote piston to be moved back and forth on axle, by the motion in two frees degree of above-mentioned piston, and by piston channel and The continuous oil transportation work of pump core is realized in the cooperation of the enterprising fuel-displaced window channel of cylinder body.Similarly, intermediate shaft coupling exports motor Moment of torsion is delivered in right pump core by the rotation of left pump core piston, drives right pump core to rotate.Drive of the left and right pump core in motor Under, at the same can suction oil work, the phase difference in the presence of 45 ° again between left and right pump core, the instantaneous delivery of two pump cores is same Moment differs, but the total flow collaborated remains constant.
The beneficial effect of the present invention compared with prior art:
(1) the special transmission of the present invention and oil circuit design so that the pump housing, the structure optimization of cylinder body, manufacture simplification, loss of weight are bright It is aobvious, be advantageous to the miniaturization of pump;
(2) the special oil circuit design of the present invention so that sealing structure is achieved, and makes the radius of gyration of piston diminish, knot Close the optimization of the kind of drive so that rotating ratio existing structure of the present invention, which has, to be dramatically increased, and rotating speed can reach 10000RPM and (turn every Minute) more than, and existing structure typically in 5000RPM (rpm) below;
(3) the special Design of Piston Structure of the present invention, is compared with existing two-dimentional joint-track type piston oil transfer pump, is ensureing two Under the premise of tieing up piston effective suction pasta product identical, the radius of gyration of inventive piston structure diminishes, weight loss effect substantially with And " in returning " effect, be advantageous to high speed and the miniaturization of piston pump;
(4) running part between pump core of the present invention no longer uses the organization plan of joint-track type, by using middle shaft coupling The mode of device connects two pump cores, simplifies structure, what can be more prone to while difficulty of processing is reduced ensures two pumps Can stagger 45 ° of required precision between core so that the flow pulsation performance of pump more easily reachs Theoretical Design value;
(5) present invention receives the structure side in dirty hole and cam cylinder endoporus installation copper ring using opening up on piston extension bar Formula, it can effectively solve the problem that the metal of piston and cam contact surface in high-speed rotation is adhered phenomenon, prevent the stuck of piston;
(6) special construction of the invention realize pump core cylinder body, cam cylinder O-ring seals sealing means, replace The mode sealed for existing two-dimentional two contact surface close-fitting bands of joint-track type piston oil transfer pump, the sealing of pump is substantially increased, So as to improve the efficiency of pump.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention;
Fig. 2 is the left pump core structural representation of the present invention;
Fig. 3 is the right pump core structural representation of the present invention;
Fig. 4 is left wheel component diagram of the present invention;
Fig. 5 is Left Drive wheel assembly schematic diagram of the present invention;
Fig. 6 is the left cam structure schematic diagram of the present invention;
Fig. 7 is left cylinder structural representation of the present invention (by taking rectangle oil entered window and oil extraction window as an example);
Fig. 8 is left piston structural representation of the present invention (corresponding with Fig. 7, by taking rectangle groove as an example);
Fig. 9 is motor coupler structural representation of the present invention;
Figure 10 intermediate shaft coupling structural representations of the present invention.
Embodiment
With reference to instantiation and accompanying drawing, the present invention is described in detail.
The present invention is as shown in figure 1, including left end cap 1, right end cap 11, left pump core, right pump core, motor coupler 2, middle connection Axle device 9 and pump case 15.Left pump core and right pump core are placed in pump case 15 by the shoulder (cylinder body) designed in pump core and pass through left end Lid 1, right end cap 11 are spacing to make it be fastenedly connected with pump case 15, is then connected between left and right pump core by intermediate shaft coupling 9; The fuel-displaced circular passage 151 of twice annular is provided with pump case 15, fabrication hole insertion is crossed in two fuel-displaced circular passages 151, and with adding Oil-out 152 of the work on pump case 15 is connected, and fabrication hole is sealed by screw plug 14, and the fuel-displaced circular passage on pump case 15 is with loading Left and right pump core in pump case 15 forms closed fuel-displaced path, and the both ends of pump case 15 are installed with left and right end by bolt 12 Lid 1,11, the left end of left end cap 1 installation motor coupler 2, the right-hand member of right end cap 11 processing oil inlet 111.
Left pump core is as shown in Fig. 2 including left cylinder 8, left piston 23, the wheel assembly that rolls left, driving pulley assembly and left cam 7. Left cylinder 8 is as shown in fig. 7, opened hole at axial centre, and for installing left piston 23, clear size of opening size is maximum with left piston 23 Shoulder diameter dimension is engaged;It is provided with eight of circle distribution parallel with central through hole fuel feed hole e on the end face of left cylinder 8, eight Individual fuel feed hole e is in fan-shaped symmetrical, the ditch circulation passage as oil inlet oil suction.Left cylinder 8 is provided with ring in radial center position Shape oil groove f, closed oil discharge passage is formed with the pairing of fuel-displaced circular passage 151 in pump case 15, the annular oil groove f of left cylinder 8 is left Right side has symmetrical O-ring seals groove, and being provided with O-ring seals 24 ensures the sealing of oil discharge passage.Left cylinder 8 Four rectangular window a, b, c, d for dividing equally part are provided with central through hole radial center, wherein rectangular window a, c is oil extraction window Mouthful, penetrate at the annular oil groove f of left cylinder 8 but not with eight fuel feed hole e interference on circumferencial direction and run through, another group of rectangle Window b, d are oil entered window, then are passed through respectively with occuping two small through hole in centre position in eight symmetrical fuel feed hole e It is logical, but the annular oil groove f with left cylinder 8 does not run through, and oil entered window b, d and oil extraction window a, c circumferentially divide uniformly and staggeredly Cloth.
Left piston 23 is offered on the circumferential surface of shoulder uniformly as shown in figure 8, the centre of left piston 23 sets shoulder Four rectangle grooves h, g, m, n of arrangement, and the notch position of four rectangle grooves is staggeredly arranged in circumferencial direction;Four The four equally distributed rectangle oil extractions set on individual rectangle groove h, g, m, n and left cylinder 8 and oil entered window a, c, b, d are mutual Pairing is linked up, and the width of left piston 23 rectangle groove h, g, m, n width and rectangular window a, b, c, d on left cylinder 8 is Consistent;The shoulder both ends of the surface projecting shaft of left piston 23 is piston extension bar 231, is offered on piston extension bar 81 and accommodates fluid dirt Dirt receives dirty hole p, for preventing the stuck left piston 23 of larger foreign matter, receive dirty hole p on piston extension bar periphery helically Distribution;During work, rectangular window a, b, c, d on rectangle groove h, g, m, n and left cylinder 8 on left piston 23 are linked up, Realize the flow of fluid:The chamber that volume becomes larger all the time all can be by left piston rectangle groove with being penetrated on left cylinder to entering Oilhole e rectangular window is linked up so as to from fuel tank oil suction;The chamber that volume tapers into can all pass through left piston rectangle ditch all the time Groove and the rectangular window of insertion on left cylinder to annular oil groove f are linked up so as to which fluid be discharged.
Wheel assembly roll left as shown in figure 4, including roller shaft 26 and roller 6, the both ends of roller shaft 26 are separately installed with one group Roller 6;Roller 6 is spacing by lock washer 18 and alignment pin 19 built with bearing 27 and bearing 28, roller 6.
Driving pulley assembly is as shown in figure 5, including transmission wheel structure part 20 and drive 5, the end face of transmission wheel structure part 20 has The roller shafts 51 of four installation drives, drive 5 is installed on roller shaft 51, drive 5 built with two bearings 29,30, and It is spacing by lock washer 32 and spacer pin 16;Drive and roller shaft are arranged symmetrically two-by-two.
Left cam 7 is advised as shown in fig. 6, being installed with left and right two end faces of left cylinder 8 and changing with identical curved surface respectively The left cam 7 of rule, two left cams 7 are mounted opposite, and are staggeredly arranged in installation site in 90 °;Left cam 7 is in cylinder Body, the top surface of cylinder have the arc-shaped curved surface of outwardly convex, and symmetrical on the cylinder at the minimum point both ends of arc-shaped curved surface It is provided with the mounting hole to match with pin 21 (in Fig. 2 on left cylinder 8);The center of cylinder offers centre bore, centre bore Copper ring 31 is inside installed, coordinated with the piston extension bar 231 of left piston 23;The cylinder circumferencial direction of left cam 7 is provided with annular Groove, O-ring seals 22 are installed.
The central through hole of left cylinder 8 is provided with left piston 23, and left piston 23 can be made along the axial direction of the centre bore of left cylinder 8 Straight reciprocating motion;The left cam 7 with identical curved surface changing rule is installed with respectively on left and right two end faces of left cylinder 8, Left cam 7 is fixed on left cylinder 8 by alignment pin 21 respectively, and one group of left wheel group is installed in the left and right ends of left piston 23 respectively Part and one group of Left Drive wheel assembly;Roll left wheel assembly, Left Drive wheel assembly is fastened on left piston 23 by alignment pin 17 respectively Left and right end, the roller 6 to roll left on wheel assembly after placement can contact with the left application of a surface of cam 7, and can be in left cam 7 Upper rolling.Left Drive wheel assembly leaves gap, motor coupler 2 and intermediate shaft coupling 9 between two rollers 5 on end face Shift fork be just separately mounted in gap of two Left Drive wheel assemblies with two rollers 5 on end face of left and right, play connection Gearing.With two rollers 5 on end face roller shaft, one of roller 5 is used for transmitting electricity Left Drive roll wheel assembly The moment of torsion of machine or intermediate shaft coupling shift fork, another roller 5 are then used for limiting motor or intermediate shaft coupling shift fork in transmission Circumferential play, ensure the stationarity of whole pump core driving-chain.
The space that left cam 7, the left end of left piston 23 and the left cylinder 8 on the left side enclose jointly forms left chamber, the left side on the right The volume of the space composition right chamber room that cam 7, the right-hand member of left piston 23 and left cylinder 8 enclose jointly, left chamber and right chamber room is with work The reciprocating motion of plug staggeredly changes;When left piston 23 is axially moved from high order end toward low order end, left chamber's volume becomes larger, Right cavity volume tapers into;Similarly, when left piston 23 is axially moved from low order end toward high order end, right cavity volume gradually becomes Greatly, left chamber's volume tapers into.
Right pump core is as shown in figure 3, including right cylinder body 8 ', right piston 23 ', right roll wheel assembly and right cam 7 ';Right cylinder body 8 ', The structure of right piston 23 ', right roll wheel assembly and right cam 7 ' is consistent with structure in left pump core (specific such as Fig. 4,6,7,8), right pump Core does not have driving pulley assembly, and is mounted with intermediate shaft coupling 9 in right pump core and left pump core near-end, right for being coupled left and right pump core Right roll wheel assembly in pump core is fastened by pin 25 and pin 10.
The pump core of left and right two has 45 ° of phase differences on sagittal plane, is exported by this phase difference to realize two pump cores Total flow continuous uniform is steady.
Motor coupler 2 is as shown in figure 9, one end of axle is shifting fork structure.The shift fork of motor coupler 2 is arranged on left pump core In the drive gap of the driving pulley assembly of left end, the left end of motor coupler 2 is provided with the rectangle keyway coordinated with motor, motor Shaft coupling 2 is arranged on by back-up ring and is provided with the left end cap 1 of through hole, is installed between left end cap 1 and motor coupler 2 for sealing The oil sealing 3 and bearing 4 acted on the frictional force for reducing shaft coupling and end cap.
Intermediate shaft coupling 9 is as shown in Figure 10, and one end of axle is shifting fork structure.Intermediate shaft coupling 9 is fastened by alignment pin 25 In the right piston 23 ' of right pump core (such as Fig. 3).The annular for placing O-ring seals 13 is offered on left and right end cap 1,11 Groove.
Unspecified part of the present invention is known to the skilled person technology.

Claims (10)

  1. A kind of 1. two-dimentional piston oil transfer pump, it is characterised in that:Including pump case (15), left and right end cap (1,11), left pump core, right pump Core, motor coupler (2) and intermediate shaft coupling (9), described left and right pump core be placed in pump case (15) and by left and right end cap (1, 11) spacing it is connected with pump case, left pump core, right pump core are connected and are driven by intermediate shaft coupling (9);
    Described left pump core includes left cylinder (8) and left piston (23), and described right pump core includes right cylinder body (8 ') and right piston (23’);Described left and right cylinder body (8,8 ') central axial machining center through hole, left and right cylinder body (8,8 ') end face process some oil-feeds Hole e, radial center position is provided with annular oil groove f as oil discharge passage on outer circumference surface, in described central through hole inner peripheral surface 2 oil entered windows and 2 oil extraction windows are radially processed, oil entered window and oil extraction window divide uniformly and staggeredly on the circumferential surface Cloth, wherein oil entered window are penetrated with fuel feed hole e respectively, but do not run through with annular oil groove f, and oil inlet passage, oil extraction window are formed with this Mouth penetrates to be run through to the annular oil groove f of oil discharge passage but not with fuel feed hole e interference, and oil discharge passage is formed with this;
    Shoulder is provided with the middle part of described left and right piston (23,23 '), is processed and left and right cylinder body on the outer circumference surface of the shoulder Groove corresponding to the oil entered window and oil extraction window of (8,8 '), when piston rotates, groove can be with oil entered window or oil extraction window Generation is intermittent to link up, and realizes suction oil flow function;
    Fuel-displaced circular passage (151) corresponding with the annular oil groove f on left and right cylinder body (8,8 ') is processed on described pump case (15), Connected between fuel-displaced circular passage, by processing oil-out (152) oil extraction on pump case.
  2. A kind of 2. two-dimentional piston oil transfer pump according to claim 1, it is characterised in that:Described left pump core also includes two groups Left Drive wheel assembly, two groups of roll left wheel assembly and a pair of left cams (7), the described every group wheel assembly that rolls left include the wheel shaft that rolls left (26) and roller (6), the both ends of the wheel shaft that rolls left (26) are separately installed with a pair roller (6), every group of described Left Drive component bag Include Left Drive rolling hitch component (20) and drive (5), the roller shaft that drive (5) passes through Left Drive rolling hitch component (20) end face (51) it is symmetrically mounted on two-by-two on Left Drive rolling hitch component, described a pair left cams (7) are separately mounted to a left side for left cylinder (8) On right side, the central through hole and a pair of left cams (7), the wheel shaft that rolls left (26) of left piston (23) through left cylinder (8) are arranged on In Left Drive rolling hitch component, the piston extension bar at left piston (23) both ends passes through the wheel shaft that rolls left (26) and Left Drive rolling hitch component (20) one group of roll left wheel assembly and Left Drive component are respectively fixedly connected with, the roller (6) to roll left on wheel assembly is bent with left cam (7) Face fitting contact, and can be rolled on left cam (7).
  3. A kind of 3. two-dimentional piston oil transfer pump according to claim 1, it is characterised in that:Described right pump core also includes two groups Right roll wheel assembly and a pair of right cams (7 '), right roll wheel assembly and right cam (7 ') and roll left wheel assembly and left cam (7) structure Unanimously, described a pair right cams (7 ') are separately mounted on the left and right end face of right cylinder body (8 '), and right piston (23 ') passes through right cylinder The central through hole of body (8 ') and a pair of right cams (7 '), the piston extension bar at right piston (23 ') both ends are distinguished by right roller shaft It is fixedly connected with one group of right roll wheel assembly, the roller on right roll wheel assembly contacts with right cam (7 ') application of a surface, and can be right convex Rolled on wheel (7 ').
  4. A kind of 4. two-dimentional piston oil transfer pump according to claim 1 and 2, it is characterised in that:Described motor coupler (2) One end with intermediate shaft coupling (9) is shifting fork structure, and the shift fork of described motor coupler (2) is arranged on the Left Drive group of left end For part with the gap between two drives of end face, the shift fork of intermediate shaft coupling (9) is arranged on the Left Drive component of right-hand member With in the gap between two drives of end face, the other end is connected with right piston left end.
  5. A kind of 5. two-dimentional piston oil transfer pump according to claim 1, it is characterised in that:Described left and right pump core is flat in installation There are 45 ° of phase differences on face.
  6. A kind of 6. two-dimentional piston oil transfer pump according to claim 1, it is characterised in that:Opened up on described piston extension bar There is accommodate fluid dirt to receive dirty hole p, the dirty hole p that receives is in spiral distribution on the piston extension bar periphery.
  7. A kind of 7. two-dimentional piston oil transfer pump according to claim 2 and 3, it is characterised in that:Two described left and right cams (7,7 ') are mounted opposite, and are staggeredly arranged in installation site in 90 °.
  8. A kind of 8. two-dimentional piston oil transfer pump according to claim 7, it is characterised in that:Described left and right cam (7,7 ') is equal In cylinder, there is identical curved surface changing rule, the top surface of described cylinder has the arc-shaped curved surface of outwardly convex;Described The center of cylinder offers the through hole coordinated with piston extension bar, and through hole is provided with copper ring;The cylinder circumference of the cam Direction is provided with ring-shaped groove, is provided with O-ring seals.
  9. A kind of 9. two-dimentional piston oil transfer pump according to claim 1, it is characterised in that:Described motor coupler (2) is logical Cross back-up ring be arranged on be provided with the left end cap (1) of through hole, between described left end cap (1) and motor coupler (2) installation oil sealing, Copper sheet and bearing.
  10. A kind of 10. two-dimentional piston oil transfer pump according to claim 2 and 3, it is characterised in that:Described driving pulley assembly The roller of drive and roll wheel assembly is made up of wheel case, bearing, alignment pin and lock washer respectively.
CN201710275241.0A 2017-04-25 2017-04-25 Two-dimensional piston oil transfer pump Active CN107747531B (en)

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CN201710275241.0A CN107747531B (en) 2017-04-25 2017-04-25 Two-dimensional piston oil transfer pump
PCT/CN2017/101187 WO2018196256A1 (en) 2017-04-25 2017-09-11 Two-dimensional piston oil transfer pump

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64368A (en) * 1987-06-19 1989-01-05 Tokico Ltd Hydraulic pump
US20040101426A1 (en) * 2000-11-08 2004-05-27 Andreas Wahlberg Pump
CN105484962A (en) * 2015-12-18 2016-04-13 浙江工业大学 Two-dimensional dual axial piston pump
CN106089621A (en) * 2016-07-19 2016-11-09 浙江工业大学 Two dimension cone roller piston pump
CN207315586U (en) * 2017-04-25 2018-05-04 北京空天技术研究所 A kind of two dimension piston oil transfer pump

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Publication number Priority date Publication date Assignee Title
US4854837A (en) * 1987-09-15 1989-08-08 Cordray International Corporation Rotary actuated pump or motor
JP2009068421A (en) * 2007-09-13 2009-04-02 Kayseven Co Ltd Fluid suction delivery device
CN206092302U (en) * 2016-08-31 2017-04-12 浙江工业大学 Entry pressure boosting type two dimension pair piston pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64368A (en) * 1987-06-19 1989-01-05 Tokico Ltd Hydraulic pump
US20040101426A1 (en) * 2000-11-08 2004-05-27 Andreas Wahlberg Pump
CN105484962A (en) * 2015-12-18 2016-04-13 浙江工业大学 Two-dimensional dual axial piston pump
CN106089621A (en) * 2016-07-19 2016-11-09 浙江工业大学 Two dimension cone roller piston pump
CN207315586U (en) * 2017-04-25 2018-05-04 北京空天技术研究所 A kind of two dimension piston oil transfer pump

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WO2018196256A1 (en) 2018-11-01

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