CN207315586U - A kind of two dimension piston oil transfer pump - Google Patents

A kind of two dimension piston oil transfer pump Download PDF

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Publication number
CN207315586U
CN207315586U CN201720439347.5U CN201720439347U CN207315586U CN 207315586 U CN207315586 U CN 207315586U CN 201720439347 U CN201720439347 U CN 201720439347U CN 207315586 U CN207315586 U CN 207315586U
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CN
China
Prior art keywords
piston
oil
pump
cylinder
cam
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Withdrawn - After Issue
Application number
CN201720439347.5U
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Chinese (zh)
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 CN201720439347.5U priority Critical patent/CN207315586U/en
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Publication of CN207315586U publication Critical patent/CN207315586U/en
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Abstract

The utility model 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 utility model and oil circuit design so that the pump housing, the structure optimization of cylinder body, manufacture simplification, loss of weight is obvious, is conducive to the miniaturization of pump.

Description

A kind of two dimension piston oil transfer pump
Technical field
A kind of two-dimentional piston oil transfer pump is the utility model is related to, belongs 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 transfer pump is all poor there are oil absorbency, and efficiency is low, and structure is more complicated, and dimensional weight is relatively large.
Two-dimentional piston oil transfer pump is the pump of the new structure based on two-dimentional (2D) motion principle design, it not only simplify biography Unite the structure of the pump housing, also breach the restriction of friction secondary (fricton-tight friction is secondary) 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 High voltage outputs for realizing pump, but it into fuel-displaced unidirectional, 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.Patent joint-track type drive mechanism design is complicated, and processing difficulties, the precision of drive mechanism part is difficult to Ensure, and then influence the transmission effect of whole driving-chain between pump core, cause flow pulsation to be not up to ideal value;Two-dimentional piston ruler Very little larger, so as to determine that the radius of gyration of pump core rotor is excessive, heavier mass, is unfavorable for the high speed pumped;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 effect of pump is poor, influenced by ambient temperature big, influences the performance of pump;Joint-track type piston piston at high speed There are metal to be adhered phenomenon for extension bar and guide rail contacting surface, is easy to cause seizure of piston.
Utility model content
The purpose of the utility model is to overcome prior art deficiency, there is provided one kind has compact-sized, small heavy Amount is light, self-priming performance is good, efficient, flow continuous uniform, the two-dimentional piston oil transfer pump suitable for high speed and high pressure situation.
The technical solution of the utility model:A kind of two dimension piston oil transfer pump, including:Pump case, left and right end cap, left pump Core, right pump core, motor coupler and intermediate shaft coupling, the left pump core include left cylinder, left piston, two groups of Left Drive wheel groups Part, two groups of roll left wheel assembly and a pair of left cams, the right pump core include right cylinder body, right piston, two groups of right roll wheel assemblies and A pair of right cam;
The 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 is penetrated through with fuel feed hole e respectively, but is 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 is penetrated through 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 of rolling Wheel;Every group of 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 the 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 The corresponding groove of oily window, when piston rotates, groove can occur with oil entered window or oil extraction window it is intermittent link up, realize and inhale Oil extraction flow function;
A pair of left cam is 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 cam, the wheel shaft that rolls left are installed 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;
Right cylinder body, right piston, right roll wheel assembly and the right cam structure and left cylinder, left piston, Left Drive wheel group Part is identical with left cam, and a pair of right cam is 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 cam, the piston extension bar at right piston both ends one group of right rolling is respectively fixedly connected with by right roller shaft Wheel assembly, the roller on right roll wheel assembly is contacted with the fitting of right cam curved surface, and can be rolled on right cam;
The motor coupler and one end of intermediate shaft coupling are shifting fork structure;Processing and left and right cylinder on the pump case The corresponding fuel-displaced circular passage of annular oil groove on body, connects between fuel-displaced circular passage, and the oil outlet with being processed on pump case Connection;Between the shift fork of the motor coupler is installed between two drives of the same end face of Left Drive component of left end In gap, the shift fork of intermediate shaft coupling is installed in the gap between two drives of the same end face of Left Drive component of right end, The other end is connected with right piston left end;The 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 utility model processes the annular fuel-displaced circular passage of connection in pump case, with loading the left and right pump core in pump case Form closed fuel-displaced path, process fuel feed hole runner on the cylinder body of left and right pump core, rational deployment oil circuit is and existing Two-dimentional 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-walled knot Structure, appearance and size reduce, and loss of weight is obvious, and the overall structure that cylinder body pumps while loss of weight also becomes compacter;In addition, so Compact structure, while avoid existing two-dimentional joint-track type piston oil transfer pump from using interference fit mostly due to structure constraint Sealing structure, symmetrical O-ring seals groove is had in cylinder body annular oil groove left and right sides, by installing O-ring seals Mode ensure the leakproofness of oil discharge passage, can effectively improve the volumetric efficiency of pump.
The 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 utility model is using motor coupler, left pump core transmission component, intermediate shaft coupling, right pump core piston drive road Line, with reference to two rollers on the same end face of the shifting fork structure of motor coupler and intermediate shaft coupling and left pump core transmission component Coordinate, play connection gearing, one of roller is used for transmitting the moment of torsion of above-mentioned shaft coupling shift fork, another roller is then For limiting circumferential play of the above-mentioned shaft coupling shift fork in transmission, ensure the stationarity of whole pump core driving-chain.Using this reality With new driving form, compared with the joint-track type kind of drive, overall driving-chain is pumped although increased on axial length Size, but the optimization due to the utility model cylinder body, piston, pump case in structure, the axial length that it is entirely pumped is significantly Reduce, therefore, do not have obvious influence for the pump axial length after optimization using the utility model kind of drive;Into one Step, since the utility model drive mechanism is simple, the precision of processing greatly improves, and in assembling, more can readily ensure two Pump core is in the precision on 45 ° of phase differences that staggers 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 the 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 effect at the piston extension bar.
The utility model piston is in the case where discharge capacity needed for pump is certain, living compared with two-dimentional joint-track type piston oil transfer pump Size shape smaller is filled in, is conducive to high speed;During work, oil inlet on groove and cylinder body or oil extraction window hair in piston land It is raw to link up, realize the flow of fluid:The chamber that volume becomes larger all the time all can be by above-mentioned piston channel and above-mentioned cylinder body Penetrate through to the oil entered window of suction passage aperture and link up so as to from fuel tank oil suction;The gradually smaller chamber of volume can all pass through all the time Above-mentioned piston channel and the oil extraction window of perforation on above-mentioned cylinder body to annular groove are linked up so as to which fluid be discharged.
Two left cams or the opposite installation of two right cams, and be staggeredly arranged in installation site in 90 °.
The 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 the cylinder has the arc-shaped curved surface of outwardly convex, and the 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 the cylinder is offered stretches with piston The through hole that rod coordinates, is provided with copper ring 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 inlet on cylinder body and oil extraction window being evenly arranged is offered on the left and right piston face, And the notch position of groove is staggeredly arranged in circumferencial direction;Groove and the equally distributed oil inlet 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 inlet 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 the left and right cylinder body, by installing O The mode of shape sealing ring ensures the leakproofness of oil discharge passage, can effectively improve the volumetric efficiency of pump.
The space that the left cam, piston left end and cylinder body enclose jointly forms left chamber, the right cam, piston The space that right end and cylinder body enclose jointly forms right chamber, and the O-ring seals installed on the left and right cam cause left and right chamber The leakproofness of room greatly improves, and improves the suction oil efficiency of pump.The volume of left chamber and right chamber 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 chamber volume gradually becomes It is small;Similarly, when piston is axially moved from low order end toward high order end, right chamber volume becomes larger, and left chamber's volume gradually becomes It is small.
Further, the motor coupler is installed on by baffle ring and is provided with the left end cap of through hole;The left end Installation is used for oil sealing, copper sheet and the axis for sealing and reducing the frictional force effect of shaft coupling and end cap between lid and motor coupler Hold;The left end of the motor coupler is provided with the rectangle keyway coordinated with motor.
The annular groove for placing O-ring seals is offered on the left and right end cap.
The left and right cam is fixed on cylinder body by positioning pin respectively.
The drive of the driving pulley assembly and the roller of roll wheel assembly respectively by wheel case, rolling bearing, positioning pin and Lock washer is formed.
The operation principle of the utility model:
The piston of left and right pump core is fixed together with roll wheel assembly, driving pulley assembly by positioning pin, and motor passes through motor Shaft coupling transfers torque to the roller on driving pulley assembly, drives driving pulley assembly to rotate, while the roller group connected with it Part rolls on cam;Driving pulley assembly promotes piston longitudinally rotating movement, and the roll wheel assembly rolled on cam is again Promote piston to be moved back and forth on axis, by the movement 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, again there are 45 ° of phase difference 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 utility model compared with prior art:
(1) the special transmission of the utility model and oil circuit design so that the pump housing, the structure optimization of cylinder body, manufacture simplification, subtract Weight is obvious, is conducive to the miniaturization of pump;
(2) the special oil circuit design of the utility model so that sealing structure is achieved, and becomes the radius of gyration of piston It is small, with reference to the optimization of the kind of drive so that the utility model rotating ratio existing structure, which has, to be dramatically increased, and rotating speed can reach More than 10000RPM (rpm), and existing structure generally in 5000RPM (rpm) below;
(3) the special Design of Piston Structure of the utility model, compares with existing two-dimentional joint-track type piston oil transfer pump, is protecting On the premise of the effective suction pasta product of the two-dimentional piston of card is identical, the radius of gyration of the utility model piston structure diminishes, loss of weight effect Fruit is obvious and is acted on " in returning ", is conducive to high speed and the miniaturization of piston pump;
(4) running part between the utility model pump core no longer uses the organization plan of joint-track type, by using centre The mode of shaft coupling connects two pump cores, simplifies structure, what can be more prone to while difficulty of processing is reduced ensures two Can stagger 45 ° of required precision between a pump core so that the flow pulsation performance of pump more easily reachs Theoretical Design value;
(5) the utility model receives the structure in dirty hole and cam cylinder endoporus installation copper ring using opening up on piston extension bar Mode, can effectively solve the problem that the metal of piston and cam contact surface in high-speed rotation is adhered phenomenon, prevents the stuck of piston;
(6) special construction of the utility model realize pump core cylinder body, cam cylinder O-ring seals sealing side Formula, instead of the mode of existing two-dimentional two contact surface close-fitting band sealings of joint-track type piston oil transfer pump, substantially increases the close of pump Feng Xing, so as to improve the efficiency of pump.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram;
Fig. 2 is the left pump core structure diagram of the utility model;
Fig. 3 is the right pump core structure diagram of the utility model;
Fig. 4 is the utility model left wheel component diagram;
Fig. 5 is the utility model Left Drive wheel assembly schematic diagram;
Fig. 6 is the left cam structure schematic diagram of the utility model;
Fig. 7 is the utility model left cylinder structure diagram (by taking rectangle oil entered window and oil extraction window as an example);
Fig. 8 is the utility model left piston structure diagram (corresponding with Fig. 7, by taking rectangle groove as an example);
Fig. 9 is the utility model motor coupler structure diagram;
Figure 10 the utility model intermediate shaft coupling structure diagrams.
Embodiment
The utility model is described in detail with reference to instantiation and attached drawing.
The utility model as shown in Figure 1, including left end cap 1, right end cap 11, left pump core, right pump core, motor coupler 2, in Between shaft coupling 9 and pump case 15.Left pump core and right pump core are placed in pump case 15 and are passed through by the shoulder (cylinder body) designed in pump core Left end cap 1, right end cap 11 are spacing to make it be fastenedly connected with pump case 15, is then driven and connected by intermediate shaft coupling 9 between left and right pump core Connect;The fuel-displaced circular passage 151 of twice annular is provided with pump case 15, two fuel-displaced circular passages 151 are crossed fabrication hole and are penetrated through, and with The oil outlet 152 processed on pump case 15 connects, and fabrication hole is sealed by screw plug 14, the fuel-displaced circular passage on pump case 15 and dress Enter the left and right pump core in pump case 15 and form closed fuel-displaced path, the both ends of pump case 15 are installed with left and right by bolt 12 End cap 1,11,1 left end of left end cap installation motor coupler 2,11 right end of right end cap 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, open hole at axial centre, 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 8 end face of left cylinder, eight A 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, forms closed oil discharge passage, the annular oil groove f of left cylinder 8 is left with the pairing of fuel-displaced circular passage 151 in pump case 15 Right side has symmetrical O-ring seals groove, and being provided with O-ring seals 24 ensures the leakproofness 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 through 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 8,23 centre of left piston 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 a 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 the width and rectangular window a, b, c, d on left cylinder 8 of left piston 23 rectangle groove h, g, m, n is Consistent;23 shoulder both ends of the surface projecting shaft of left piston 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 by perforation on left piston rectangle groove and left cylinder into The rectangular window of oilhole e is linked up so as to from fuel tank oil suction;The gradually smaller chamber of volume can all pass through left piston rectangle ditch all the time Groove and the rectangular window of perforation 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;Bearing 27 and bearing 28 are housed in roller 6, roller 6 is spacing by lock washer 18 and positioning pin 19.
Driving pulley assembly is as shown in figure 5, including transmission wheel structure part 20 and drive 5,20 end face of transmission wheel structure part has The roller shafts 51 of four installation drives, drive 5 is installed on roller shaft 51, two bearings 29,30 are housed in drive 5, 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 opposite to be installed, and is 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, is coordinated with the piston extension bar 231 of left piston 23;The cylinder circumferencial direction of left cam 7 is provided with annular Groove, is provided with O-ring seals 22.
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 8 centre bore of left cylinder 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 positioning 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 positioning pin 17 respectively Left and right end, the roller 6 to roll left on wheel assembly after placement can be contacted with left 7 application of a surface of cam, and can be in left cam 7 Upper rolling.Gap, motor coupler 2 and intermediate shaft coupling 9 are left between two rollers 5 on the same end face of Left Drive wheel assembly Shift fork be just separately mounted to left and right two same end faces of Left Drive wheel assembly on two rollers 5 gap in, play connection Gearing.Two rollers 5 on the surface roller axis of Left Drive roll wheel assembly the same end, one of roller 5 are used for transmitting electricity 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, ensures the stationarity of whole pump core driving-chain.
The space that left cam 7,23 left end of left piston 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 that cam 7,23 right end of left piston and left cylinder 8 enclose jointly, left chamber and right chamber 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 chamber volume tapers into;Similarly, when left piston 23 is axially moved from low order end toward high order end, right chamber 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 axis is shifting fork structure.The shift fork of motor coupler 2 is installed 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 installed on by baffle ring and is provided with the left end cap 1 of through hole, and installation is for sealing between left end cap 1 and motor coupler 2 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 axis is shifting fork structure.Intermediate shaft coupling 9 is fastened by positioning 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.
The utility model unspecified part is known to the skilled person technology.

Claims (10)

  1. A kind of 1. two dimension 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), the 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);
    The left pump core includes left cylinder (8) and left piston (23), and the right pump core includes right cylinder body (8 ') and right piston (23’);Described left and right cylinder body (8,8 ') the central axial machining center through hole, left and right cylinder body (8,8 ') end face process some oil inlets Hole e, radial center position is provided with annular oil groove f as oil discharge passage on outer circumference surface, in the 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 through with fuel feed hole e respectively, but are not run through with annular oil groove f, and oil inlet passage, oil extraction window are formed with this Mouth is penetrated through 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 the left and right piston (23,23 '), is processed and left and right cylinder body on the outer circumference surface of the shoulder The oil entered window and the corresponding groove of 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 the pump case (15), Connected between fuel-displaced circular passage, by processing oil outlet (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:The left pump core further 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 of of roller (6), every group of 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, a pair of left cam (7) is separately mounted to a left side for left cylinder (8) On right side, the central through hole and a pair of left cam (7), the wheel shaft that rolls left (26) of left piston (23) through left cylinder (8) are installed 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 paste splice grafting touches, and can be rolled on left cam (7).
  3. A kind of 3. two-dimentional piston oil transfer pump according to claim 2, it is characterised in that:The right pump core further includes two groups Right roll wheel assembly and a pair of right cam (7 '), right roll wheel assembly and right cam (7 ') and roll left wheel assembly and left cam (7) structure Unanimously, a pair of right cam (7 ') is 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 cam (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 is contacted 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 or 2, it is characterised in that:The motor coupler (2) One end with intermediate shaft coupling (9) is shifting fork structure, and the shift fork of the motor coupler (2) is installed on the Left Drive group of left end In gap between two drives of the same end face of part, the shift fork of intermediate shaft coupling (9) is installed on the Left Drive component of right end In gap between two drives of same 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:The 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 the piston extension bar There is the dirty hole p that receives for accommodating fluid dirt, 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 3, it is characterised in that:Described two left and right cams (7, 7 ') opposite installation, and be 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:The left and right cam (7,7 ') is equal In cylinder, there is identical curved surface changing rule, the top surface of the 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:The motor coupler (2) is logical Cross baffle ring be installed on be provided with the left end cap (1) of through hole, between the 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 Claims 2 or 3, it is characterised in that:The driving pulley assembly The roller of drive and roll wheel assembly is made of wheel case, bearing, positioning pin and lock washer respectively.
CN201720439347.5U 2017-04-25 2017-04-25 A kind of two dimension piston oil transfer pump Withdrawn - After Issue CN207315586U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN111379839A (en) * 2018-12-27 2020-07-07 北京空天技术研究所 Cam and design method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN111379839A (en) * 2018-12-27 2020-07-07 北京空天技术研究所 Cam and design method

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