CN107781125A - Float type two dimension double crosslinking piston pump - Google Patents
Float type two dimension double crosslinking piston pump Download PDFInfo
- Publication number
- CN107781125A CN107781125A CN201610779346.5A CN201610779346A CN107781125A CN 107781125 A CN107781125 A CN 107781125A CN 201610779346 A CN201610779346 A CN 201610779346A CN 107781125 A CN107781125 A CN 107781125A
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- Prior art keywords
- piston
- pump
- guide rail
- cylinder body
- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of float type two dimension double crosslinking piston pump, including the pump housing, inlet port and oil discharge outlet are provided with the pump housing, pump unit is provided with the pump housing, pump unit includes being fixed on two cylinder bodies in the pump housing, is equipped with piston in two cylinder bodies or so, two cylinder bodies of arrangement, and two-piston mutually links；The central shaft of cylinder body and the center overlapping of axles of piston, the both ends of piston are equipped with the axial movement of driving piston to cause the moving link that working chamber volume changes, and the moving link driving piston movement at piston both ends is in opposite direction；Described cylinder body, piston and the moving link of both sides forms the one of pump, close to the first line of a couplet for pump of drive end bearing bracket, close to the second line of a couplet for pump of rear end cap.The present invention replaces the oil distribution casing structure of the circumferential plunger pump of tradition using the double freedom structure of rotation and the slip of piston, realizes continuous suction oil function, and use duplex mode, piston rotates a circle, move back and forth 4 times, each 8 times of suction oil, 4 times more than single piston pump.
Description
Technical field
The present invention relates to a kind of float type two dimension double crosslinking piston pump, the hydraulic pump belonged in Fluid-transmission and control field and
Hydraulic motor.
Background technology
Plunger (piston) pump is used as groundwork component by the use of plunger (piston) and cylinder body.When plunger (piston) is in cylinder body
When reciprocating in plunger (piston) hole, volume change occurs for the closed swept volume chamber being made up of plunger (piston) and cylinder body
Change, complete suction, discharge opeing process.According to different spread patterns of the plunger (piston) in cylinder body, plunger (piston) pump is divided into radially
Formula and the major class of axial type two.
Common axial plunger (piston) pump of tradition moves back and forth by plunger (piston) in cylinder body, holds seal operation
Chamber volume changes to realize suction, force feed.The part of internal relative motion is more, high to Material texture, requirement on machining accuracy, right
Oil contamination is sensitive, and processing, use, the requirement safeguarded and cost are higher, expensive；Cylinder body rotates with power transmission shaft, turns
Dynamic inertia is big, cause to start, stop, the response speed of speed governing it is slow, be unfavorable for the output flow come controlling pump by speed governing；Cylinder body
Interior friction pair is more, and under high-speed rotation, cylinder body temperature rise is very fast, and the abrasion of the part such as valve plate, plunger (piston) directly affects pump
Service life and durability.In addition, due to the limitation of plunger (piston) pump operation principle itself, drive axis one
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 match somebody with somebody
Mechanism is flowed to complete the switching of working volumes suction oil.
Axle and piston integrated design are greatly simplified overall structure, and utilize piston double freedom by two-dimentional piston pump
Motion principle realize continuous suction oil, this structure instead of the port plate structure of conventional axial plunger pump, small volume, weight
Gently, simple, easy speed governing, discharge capacity height are driven, is moved back and forth once, compared with conventional axial piston pump more once, and efficiency high.
The content of the invention
In order to overcome drawbacks described above existing for axial plunger pump, the present invention provides a kind of simple in construction, small volume, weight
Gently, the big float type two dimension double crosslinking piston pump of efficiency high, discharge capacity.
The technical solution adopted by the present invention is：
Float type two dimension double crosslinking piston pump, including the pump housing, inlet port and oil discharge outlet are provided with the pump housing, pump list is provided with the pump housing
Member, it is characterised in that：
Pump unit includes being fixed on two cylinder bodies in the pump housing, and work is equipped with two cylinder bodies or so, two cylinder bodies of arrangement
Plug, and two-piston mutually links；The central shaft of cylinder body and the center overlapping of axles of piston, the both ends of piston are equipped with driving piston shaft
To mobile to cause the moving link that working chamber volume changes, and the moving link at piston both ends moves during driving piston movement
In the opposite direction；
Described cylinder body, piston and the moving link of both sides form the one of pump, close to the first line of a couplet for pump of drive end bearing bracket,
Close to the second line of a couplet for pump of rear end cap；
Work chamber includes being furnished with annular cylinder positioned at the left chamber at cylinder body both ends and right chamber room, the both sides of piston respectively
Boss, the manhole of insertion annular cylinder boss is furnished with annular cylinder boss, and on the annular cylinder boss of side
The U-type groove of insertion annular cylinder boss is furnished with, U-type groove circumferentially differs 90 degree with the position of manhole；Outside piston
Surface is furnished with two annular grooves, and the intermediate arrangement of annular groove has a round boss, and the guide rail in round boss and left side is by cylinder body
Chamber enclosure is into closed left chamber, and the guide rail on round boss and right side is by the into closed right chamber room of inner chamber of cylinder block enclosure；It is circular convex
Platform is provided with two axisymmetric left axial grooves and two axisymmetric right axial grooves, and left axial groove and right axial groove are in piston
Cross section circumference on be equidistantly arranged alternately；Left axial groove connects with left chamber, right axial groove and right chamber；Cylinder body
Be provided with two axisymmetric left windows and two axisymmetric right windows, the left window connected with described oil discharge outlet and with institute
Projection circumference along cylinder body of the right window for the inlet port connection stated on the cross section of cylinder body is equidistantly alternately distributed；
Axial symmetry refers to the substantially symmetrical about its central axis of piston；Axially refer to the direction where the central shaft of piston, radially refer to
Direction where the diameter in piston cross-section face；
Moving link includes guide rail and roller, and guide rail is fixed on the end of cylinder body, and piston runs through guide rail, and the outer end of piston
End is provided with roller shaft, and the inner end of piston is provided with shaft coupling, a pair of axisymmetric rollings are all connected with roller shaft and shaft coupling
Wheel；Guide rail is in the ring-type curved surface of axial direction, and fluctuating of the curved surface with axial direction, guide rail is in circular, institute in the projection of central axis direction
The curved surface stated has 2 peaks and 2 minimum points, and described highs and lows are located at orthogonal the two of annulus respectively
Diametrically, described curved surface is respectively in accordance with two described diameter symmetries for bar；Roller rolls on guide rail, promotes piston vertically
It is mobile；The rolling surface of described roller is adapted to guide rail；
The outer end of piston refers to that piston refers to piston away from front end close to one end of drive end bearing bracket or rear end cap, the inner of piston
One end of lid or rear end cap；
The waveform to be risen and fallen positioned at the curved surface of the guide rail at piston both ends, it is mutually 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 idler wheel driving piston move right, and left axial groove is directed at left window, and left chamber sucks liquid, together
When right axial groove be directed at right window, right chamber room excludes liquid；Second stage guide rail and idler wheel driving piston are moved to the left, left axle to
Groove is directed at right window, and left chamber excludes liquid, while right axial groove alignment left window, right chamber room suction liquid；
Shaft coupling in drive end bearing bracket is coaxially connected with the output shaft of motor, is driven by the moving link at piston both ends
Piston movement；
Rear end cap is square, and side is furnished with positioning hole and a manhole up and down, and positioning hole is placing bearing pin and and pump
Body is fixedly connected, and rear end cap is equipped with a sealing ring on the contact surface of cylinder body side and the pump housing, and the circle for having fluid to circulate is led to
Sealing ring is put on hole；
The forward and backward end cap of the pump housing, with guide rail by pump housing inner chamber enclosure into closed lubricating cavity.
Further, described left window and right window are located at the diverse location of central shaft.
Further, described drive end bearing bracket is square, and left side is evenly equipped with four circular holes, and it is fixed that right side is furnished with symmetrical four
Position hole, for positioning hole to place bearing pin and be connected with the pump housing, inner surface is furnished with centre bore and a circular big groove, circular big recessed
Moving link is placed in groove；Socket rubber oil sea and deep groove ball bearing, are placed in the centre bore of drive end bearing bracket outside shaft coupling；Shaft coupling
The side of device is furnished with cylinder boss, and opposite side is furnished with rectangular boss, and front and rear surfaces are furnished with U-shaped groove to rectangular boss up and down, and U-shaped is recessed
Groove is equipped with a sealing ring completely through rectangular boss, contact surface of the described drive end bearing bracket close to cylinder body side and the pump housing.
Further, described moving link is distributed in the both sides of cylinder body, and the moving link connected between two cylinder bodies leads to
Driving lever is crossed to be connected.
Further, the upper and lower sides of shaft coupling are cylinder, are socketed two rollers, and match somebody with somebody with the conical camber gap of guide rail
Close.
Further, two left windows are connected by first annular groove on cylinder body, and two right windows pass through the on cylinder body
Second ring groove connects.
Further, described cylinder body is carried out circumferentially fixed with guide rail with four symmetrical bearing pins, according to left in cylinder body
The pressure change of right chamber room, cylinder body can axially float with guide rail.
Further, the roller shaft at described piston both ends and shaft coupling are socketed with piston with bearing pin, roller shaft and shaft coupling
Section can circumferentially float around bearing pin respectively, i.e., the roller at both ends can swing.
The present invention proposes axle and piston integrated design, simplifies structure, utilizes the double freedom of rotation and the slip of piston
Structure replaces the oil distribution casing structure of the circumferential plunger pump of tradition, realizes continuous suction oil function, and uses duplex mode, piston rotation
Circle, move back and forth 4 times, each 8 times of suction oil, 4 times more than single piston pump.
Beneficial effects of the present invention are embodied in：
1st, it is in 45 degree of phase angles between piston, flow pulsation and pressure fluctuation are eliminated using duplex mode.
2nd, piston inner structure is through hole, as the spiracle of fluid, communicates cylinder body or so chamber fluid so that piston is not
In disconnected rotation and sliding process, the oil liquid pressure at left and right sides of cylinder body is identical, and piston, which is slided, to be impacted, and motor is turned round
The demand of square also diminishes.
3rd, guide rail and roller contact surface are conical camber, are contacted with idler wheel surface, and reduction roller rubs with guide rail conical camber
Wear consumption.
4th, the window openings of sizes summation of cylinder body and piston remains certain, eliminates flow pulsation.
5th, roller shaft and piston are connected with bearing pin so that and roller shaft can be swung centered on the periphery of bearing pin,
So that upper and lower ends roller is preferably bonded guide rail, the height error of the guide rail plane of symmetry is compensated, overcomes the height due to guide surface
Low error makes roller stuck or failed, and is vibrated in cylinder body.
6th, guide rail and cylinder body are circumferentially fixed by pin, and the pressure change in cylinder body causes guide rail direct acting to swing, and makes roller
The curved surface that can be bonded on guide rail, the mismachining tolerance of guide surface size quantity is compensated, overcome the mismachining tolerance of whole pump size quantity.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of pump unit.
Fig. 3 is the structural representation of drive end bearing bracket of the present invention.
Fig. 4 is the structural representation of rear end cap of the present invention.
Fig. 5 a, the structural representation that 5b, 5c are the pump housing of the present invention.
Fig. 6 is the exploded perspective view that cylinder body of the present invention is connected with guide rail.
The explosive view for the moving link that Fig. 7 a are connected between two cylinder bodies of the invention.
The structural representation for the moving link that Fig. 7 b are connected between two cylinder bodies of the invention.
Fig. 8 is inventive piston outer end close to the moving link of drive end bearing bracket and the exploded perspective view being connected with drive end bearing bracket.
Fig. 9 is exploded perspective view of the inventive piston outer end close to the moving link of rear end cap.
Figure 10 is inventive piston structural representation A.
Figure 11 is housing structure schematic diagram of the present invention.
Figure 12 is roller shaft structural representation of the present invention.
Figure 13 is coupler structure schematic diagram of the present invention.
Figure 14 is inventive piston structural representation B.
Figure 15 is roller structure schematic diagram of the present invention.
Figure 16 is guide rail structure schematic diagram of the present invention.
Figure 17 is present invention left side shaft coupling structure schematic diagram.
Figure 18 is present invention right side shaft coupling structure schematic diagram.
Figure 19 a are inventive piston opening schematic diagram.
Figure 19 b are the Section A-A figure in Figure 19 a.
Figure 20 a are cylinder body opening schematic diagram of the present invention.
Figure 20 b are section B-B figure in Figure 20 a.
Figure 21 a are inventive piston when moving to high order end, groove a, b, c, d on piston not with the window e on cylinder body,
F, g, h occur to link up schematic diagram.
Figure 21 b are the C-C sectional views in Figure 21 a.
Figure 22 a are that inventive piston rotates and starts to move toward right-hand member, groove a, b, c, d on piston respectively with cylinder body
Window e, f, g, h link up schematic diagram.
Figure 22 b are the D-D sectional views in Figure 22 a.
Embodiment
Referring to figs. 1 to Figure 22 b, float type two dimension double crosslinking piston pump, including the pump housing 2, inlet port and oil extraction are provided with the pump housing 2
Mouthful, it is provided with pump unit in the pump housing 1, it is characterised in that：
Pump unit includes two cylinder bodies 4,10 being fixed in the pump housing, and two cylinder bodies 4,10 or so are arranged in two cylinder bodies
Provided with piston 15,11, and two-piston mutually links；The central shaft of cylinder body and the center overlapping of axles of piston, the both ends of piston are all provided with
Piston both ends when having the axial movement of driving piston to cause the moving link that working chamber volume changes, and driving piston movement
The moving link direction of motion is opposite；
Work chamber includes being located at cylinder body 4, the left chamber at 10 both ends and right chamber room respectively, and the both sides of piston are furnished with annular
Cylinder boss, the manhole of insertion annular cylinder boss is furnished with annular cylinder boss, and side annular cylinder is convex
The U-type groove of insertion annular cylinder boss is furnished with platform, U-type groove circumferentially differs 90 degree with the position of manhole；Piston
Outer surface be furnished with two annular grooves, the intermediate arrangement of annular groove has a round boss, and the guide rail 3,7 in round boss and left side will
Inner chamber of cylinder block enclosure is into closed left chamber, and the guide rail 5,8 on round boss and right side is by the into closed right chamber of inner chamber of cylinder block enclosure
Room；Round boss is provided with two axisymmetric left axial groove b, d and two axisymmetric right axial groove a, c, and left axial groove
B, d and right axial groove a, c are equidistantly arranged alternately on the circumference of the cross section of piston；Left axial groove b, d connect with left chamber,
Right axial groove a, c and right chamber；Cylinder body 4,10 is provided with two axisymmetric left window f, h and two axisymmetric right windows
Mouthful e, g, the left window connected with described oil discharge outlet and the right window that is connected with described inlet port are on the cross section of cylinder body
Circumference of the projection along cylinder body be equidistantly alternately distributed；
Axial symmetry refers to the substantially symmetrical about its central axis of piston；Axially refer to the direction where the central shaft of piston, radially refer to
Direction where the diameter in piston cross-section face；
Moving link includes guide rail 3,5,7,8 and roller 6,14,17,21,60,48,81,91, and guide rail is fixed on cylinder body
End, piston run through guide rail, and the outside end of piston is provided with roller shaft 16,94, the inner end of piston be provided with shaft coupling 12,
13, a pair of axisymmetric rollers are all connected with roller shaft 16,94 and shaft coupling 12,13；Guide rail 3,5,7,8 is bent in the ring-type of axial direction
Face, fluctuating of the curved surface with axial direction, guide rail 3,5,7,8 have 2 most in the projection of central axis direction in annular shape, described curved surface
High point and 2 minimum points, described highs and lows are located at orthogonal two of annulus diametrically respectively, described
Curved surface is respectively in accordance with two described diameter symmetries；Roller rolls on guide rail, promotes piston to be axially moveable；Described roller
Rolling surface be adapted to guide rail；
The outer end of piston refers to that piston refers to piston away from before close to one end of drive end bearing bracket 1 or rear end cap 9, the inner of piston
One end of end cap 1 or rear end cap 9；
The waveform to be risen and fallen positioned at the curved surface of the guide rail at piston both ends, it is mutually anti-phase；
The waveform of the curved surface of guide rail 3,5,7,8 and left axial groove b, d and right axial groove a, c, left window f, h and right window e,
G position has following corresponding relation：First stage guide rail and idler wheel driving piston move right, and left axial groove is directed at left window
Mouthful, left chamber's suction liquid, while right axial groove is directed at right window, right chamber room excludes liquid；Second stage guide rail and idler wheel driving
Piston is moved to the left, and left axial groove is directed at right window, and left chamber excludes liquid, while right axial groove alignment left window, right chamber
Room sucks liquid；
Shaft coupling 18 in drive end bearing bracket 1 is connected with motor output shaft, is driven and lived by the moving link at piston both ends
Plug motion；
Rear end cap 9 is square, and oil-out is offered on end face, and side is furnished with positioning hole and a manhole up and down, positions
To place bearing pin and be fixedly connected with the pump housing 2, rear end cap is equipped with a sealing ring on the contact surface of cylinder body side and the pump housing in hole,
And have fluid circulate manhole on put sealing ring；
The forward and backward end cap 1,9 of the pump housing 2 and guide rail are by pump housing inner chamber enclosure into closed lubricating cavity.
Described left window and right window are located at the diverse location of central shaft.
Described drive end bearing bracket 1 is square, and left side is evenly equipped with four circular holes, and right side is furnished with four symmetrical positioning holes,
For positioning hole to place bearing pin and be connected with the pump housing, inner surface is furnished with centre bore and a circular big groove, in circular big groove
Place moving link；The outside of shaft coupling 18 socket rubber oil sea and deep groove ball bearing, are placed in the centre bore of drive end bearing bracket；Shaft coupling
18 side is furnished with cylinder boss, and opposite side is furnished with rectangular boss, and front and rear surfaces are furnished with U-shaped groove to rectangular boss up and down, and U-shaped is recessed
Groove is equipped with a sealing ring completely through rectangular boss, described drive end bearing bracket 1 close to the contact surface of the side of cylinder body 4 and the pump housing 2.
Described moving link is distributed in the both sides of cylinder body 4,10, and the moving link connected between two cylinder bodies 4,10 leads to
Driving lever 39 is crossed to be connected.
The upper and lower sides of shaft coupling 12,13 are cylinder, are socketed two rollers, and match somebody with somebody with the conical camber gap of guide rail
Close.
Two left windows f, h are connected by the first annular groove on cylinder body, and two right window e, g pass through second on cylinder body
Annular groove connects.
Two cylinder bodies 4,10 are located in the pump housing 2 and are fixedly connected with the pump housing 2；Deep groove ball bearing 20, rubber oil sea 19 are located at
In the centre bore of drive end bearing bracket 1, it is socketed on shaft coupling 18 and is connected with cylinder body 4.Cylinder body 4,10 is in annular, and both sides are evenly equipped with two
Individual symmetrical positioning hole, outer surface are furnished with symmetrical circular hole, and inner surface is furnished with four rectangular openings, are inhaled with the outside pump housing, oil extraction
Mouthful connection, outer surface are furnished with two annular grooves, be furnished among two annular grooves at round boss four symmetrical rectangular windows and
Inner surface rectangular opening communicates, and symmetrical two rectangular windows communicate with the same side annular groove.
Two inlet ports A, B and an oil discharge outlet C are provided with the pump housing 2, and symmetrical semi-circular hole is opened up on two end faces
D, E, F, G, maintained a fixed respectively with cylinder body 4,10 using positioning ball 24,25,30,31, inner surface or so end respectively opens up
There are three rectangular openings, symmetrical two rectangular openings communicate with inlet port, and another rectangular opening communicates with oil discharge outlet；Piston 15,11
Coordinate respectively in cylinder body 4,10 and with cylinder body 4,10 gaps；Guide rail 3,5 is located at the both sides of cylinder body 4, and by symmetrical
Bearing pin 22,23,26,27 is fixedly connected with cylinder body 4；Guide rail 7,8 is located at the both sides of cylinder body 10, and passes through bearing pin 28,29,32,33
It is fixedly connected with cylinder body 10.
For piston 15,11 respectively in cylinder body 4,10, both sides are furnished with annular cylinder boss, have on annular cylinder boss
Manhole penetrates cylinder boss, and U-type groove insertion cylinder boss is furnished with the cylinder boss of side, and position and circular hole are circumferentially
90 degree of difference, outer surface of piston is furnished with first annular groove and the second annular groove, and two left windows f, h are connected by first annular groove
Logical, two right window e, g are connected by the second annular groove.Guide rail 3,5,7,8 is in annular, and both sides are evenly equipped with annular boss, and one
The tapered curved surface in section of side boss.
The inner moving link close to drive end bearing bracket 1 of piston 15 includes shaft coupling 13, roller 6,14, bearing pin 44, deep-groove ball axle
Hold 34,36,49,51, jump ring 43,56, pad 35,50,41,54, elastic spring 40,53,61,64, needle bearing 42,55, dial
Bar 39；Shaft coupling 13 and piston 15 are concatenated by bearing pin 44, the both ends of bearing pin 44 socket jump ring (43,56), be connected shaft coupling 13
With piston 15；The shaft coupling about 13 both sides be cylinder, center section is rectangular boss, and the both sides of boss are furnished with two big
Small different round ring boss, boss outer surface are evenly equipped with circular port and run through round ring boss, and right side round ring boss is close to square
Shape boss side is furnished with rectangular recess symmetrical above and below；The shaft coupling is socketed deep groove ball bearing respectively about 13 on the cylinder of both sides
34th, 36,49,51, centre is separated respectively with pad 35,50 and outer surface socket roller 6,14, and the both ends of shaft coupling 13 are kept off with steel wire
Bearing is fixed on shaft coupling 13 by circle 61,64；The driving lever 39 manhole on the side round boss of shaft coupling 13, two
End is socketed needle bearing 42,55 respectively, and is fixed on the both ends of driving lever 39 by pad 41,54 and elastic spring 40,53；The rolling
Needle bearing 42,55 is placed in two symmetrical U-lags of shaft coupling 12, connects shaft coupling 13,12.
The outer end of piston 15 is located in drive end bearing bracket close to the moving link of drive end bearing bracket 1, and passes through bearing pin 76 and piston 15
Manhole connects；The outer end of piston 15 close to drive end bearing bracket 1 moving link include roller 21,17, deep groove ball bearing 66,68,
72nd, 74, pad 67,70,73,78, bearing pin 76, roller shaft 16, needle bearing 71,77, elastic spring 65,69,75,79；Roller
The upper and lower ends of axle 16 are in cylinder, and centre is furnished with U-shaped hole, and both ends are socketed two rollers 21,17, two are socketed respectively in each roller
Individual bearing 66,68,72,74, be furnished with pad 67,73 respectively among bearing and separate, the both ends of roller shaft 16 respectively with elastic spring 65,
75 fixing bearings 66,68,72,74 are on roller shaft 16；Bearing pin 76 is positioned in the U-shaped hole of roller shaft 16, empty with roller shaft 16
Between position be in 90 degree, both ends are furnished with toroidal cavity；The needle bearing 71,77 is socketed in the both ends of bearing pin 76, with shaft end steel wire
Back-up ring is fixed on the groove of driving lever both ends, is positioned in the U-shaped hole at the both ends of shaft coupling 18.
The inner moving link close to rear end cap 9 of piston 11 include shaft coupling 12, roller 60,48, deep groove ball bearing 59,
57th, 45,47, pad 46,58, elastic spring 62,63, bearing pin 37, jump ring 38,52；The upper and lower ends of shaft coupling 12 are cylindrical, in
Between be rectangle, there is round ring boss on right side, and boss is provided with two symmetrical U-lags and rectangular channel close to middle side, circle
Annular boss outer surface is furnished with manhole；The shaft coupling about 12 two cylindrical outer surfaces be socketed two pairs of deep-groove balls respectively
Bearing 59,57), (45,47), centre separated respectively with pad 58,46, the roller 60,48 is socketed in two pairs of deep-groove balls respectively
Bearing (59,57), (45,47) outer ring, are fixed on shaft coupling 12 with elastic spring 62,63；The bearing pin 37 runs through shaft coupling
In the manhole of 12 round ring boss and the manhole of piston 11, both ends are fixed with jump ring 38,52.
The outer end of piston 11 is located in rear end cap 9 close to the moving link of rear end cap 9, including bearing pin 85, jump ring 86,87, steel
Silk back-up ring 80,92, roller 81,91, deep groove ball bearing 82,84,88,90, pad 83,89, roller shaft 94；Bearing pin 85 is connected piston
11 and roller shaft 94, both ends are fixed with jump ring 86,87；The outer surface of roller shaft 94 is socketed deep groove ball bearing 82,84,88,90,
Centre pad 83,89 is separated, and roller 81,91 is socketed outside both ends, is fixed with elastic spring 80,92；
Preferably, 45 are staggered to make duplex two dimension piston pump eliminate flow pulsation, on the shaft coupling 13,12 locus
Angle is spent, flow summation caused by two cylinder bodies 4,10 tends to a stationary value.Guide rail 3,5,7,8 and the pin 22 of cylinder body 4,10,
23rd, 26,27,28,29,32,33 is circumferentially fixed, and the pressure change in cylinder body causes guide rail axial direction motion compensation, enables roller
The curved surface being bonded on guide rail；Shaft coupling 12, shaft coupling 13 are connected with driving lever 39, shaft coupling 12, shaft coupling 13 respectively with piston 15
Connected with bearing pin 37,44, shaft coupling 12 and shaft coupling 13 can swing rotating around bearing pin bearing pin 37,44, similarly roller shaft
16th, 93 can be swung respectively around bearing pin 76,85 so that upper and lower ends roller is preferably bonded guide rail, avoids the guide rail plane of symmetry
Height error.
The operation principle of the present embodiment：
Monoblock pump wicks oil extraction operation principle：
Piston 15 is fixed together with roller shaft 16 by bearing pin, and brushless electric machine transfers torque to pin by shaft coupling 18
On axle, drive roller shaft 16 rotate, roller shaft 16 with shaft coupling 18 rotated together with bearing pin while, the both ends of roller shaft 16
Roller 21,17 can also roll on guide rail 3.Similarly, right side shaft coupling 13 is connected by bearing pin and piston 15, on right side shaft coupling 13
Lower both ends are socketed roller 6,14, and when moment of torsion is delivered to piston 15, the drive right side upper roller 6,14 of shaft coupling 13 is in right rail 5
Roll.When left side roller 21,17 is rolled to the peak of left rail 3, i.e., right roller 6,14 is rolled to right rail 5
Minimum point, piston 15 move axially to high order end；When left side roller 21,17 is rolled to the minimum point of left rail 3, i.e., right side
Roller 6,14 is rolled to the peak of right rail 5, and piston 15 moves axially to low order end.With left side roller 21,17 and the right side
The continuous rolling in left rail 3, right rail 5 respectively of side wheel 6,14, so that it may so that piston 15 carry out it is axially consecutive reciprocal
Motion, realize piston 15 is axially having continuous reciprocating motion again while circumferentially continuous rotation.
As shown in Figure 19 a, 19b, 20a, 20b, right axial groove a, c notch and left axial groove b, d notch direction on piston
Conversely.Two group windows corresponding with left and right axial groove are e, g and f, h on cylinder body, and roller rolls on curved guide, are driven
Piston double freedom moves
Figure 21 a and 21b be piston movement to high order end when, now rectangle groove a, b, c, d on piston not with cylinder body
E, f, g, h window link up.
Start to move toward right-hand member while piston rotation, as shown in Figure 22 a, 22b, rectangle groove a, b, c on piston,
D links up with window e, f, g, h on cylinder body respectively, the left chamber that cavity volume becomes larger, by ditch circulation passage a-e, c-g from fuel tank
Middle oil suction；Fluid is extruded by ditch circulation passage b-f, d-h in the right chamber room that volume tapers into by the oil of intracavitary.
When piston is moved to low order end, now rectangle groove a, b, c, d on piston not with window e, f, g, h on cylinder body
No longer link up.When piston is rotated further, then piston starts toward left movement, and right chamber room begins through ditch circulation passage b-e, d-g from oil
Case oil suction；Left chamber is extruded oil by ditch circulation passage c-f, a-h.
The operation principle of two cylinder bodies is identical, and shaft coupling 12 is connected by shaft coupling 13 by bearing pin 39, when piston 15 rotates
When band piston 11 rotate, guide rail 5 and guide rail 7 communicate with the oil drain passage on the pump housing 2, i.e., from same oil discharge outlet discharge.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (8)
1. float type two dimension double crosslinking piston pump, including the pump housing, inlet port and oil discharge outlet are provided with the pump housing, pump list is provided with the pump housing
Member, it is characterised in that：
Pump unit includes being fixed on two cylinder bodies in the pump housing, and piston is equipped with two cylinder bodies or so, two cylinder bodies of arrangement, and
Two-piston mutually links；The central shaft of cylinder body and the center overlapping of axles of piston, the both ends of piston are equipped with driving piston and axially moved
The moving link direction of motion at piston both ends when moving to cause the moving link that working chamber volume changes, and driving piston movement
Conversely；
Described cylinder body, piston and the moving link of both sides forms the one of pump, close close to the first line of a couplet for pump of drive end bearing bracket
The second line of a couplet for pump of rear end cap；
Work chamber includes the left chamber positioned at cylinder body both ends and right chamber room respectively, and it is convex that the both sides of piston are furnished with annular cylinder
Platform, the manhole of insertion annular cylinder boss, and cloth on the annular cylinder boss of side are furnished with annular cylinder boss
There is the U-type groove of insertion annular cylinder boss, U-type groove circumferentially differs 90 degree with the position of manhole；The appearance of piston
Face is furnished with two annular grooves, and the intermediate arrangement of annular groove has a round boss, and the guide rail in round boss and left side is by inner chamber of cylinder block
Enclosure is into closed left chamber, and the guide rail on round boss and right side is by the into closed right chamber room of inner chamber of cylinder block enclosure；Round boss
Two axisymmetric left axial grooves and two axisymmetric right axial grooves are provided with, and left axial groove and right axial groove are in piston
Equidistantly it is arranged alternately on the circumference of cross section；Left axial groove connects with left chamber, right axial groove and right chamber；On cylinder body
Provided with two axisymmetric left windows and two axisymmetric right windows, the left window connected with described oil discharge outlet and with it is described
Projection circumference along cylinder body of the right window on the cross section of cylinder body of inlet port connection be equidistantly alternately distributed；
Axial symmetry refers to the substantially symmetrical about its central axis of piston；Axially refer to the direction where the central shaft of piston, radially refer to piston
Direction where the diameter of cross section；
Moving link includes guide rail and roller, and guide rail is fixed on the end of cylinder body, and piston runs through guide rail, and the outside end of piston
Provided with roller shaft, the inner end of piston is provided with shaft coupling, and a pair of axisymmetric rollers are all connected with roller shaft and shaft coupling；Lead
Rail is in the ring-type curved surface of axial direction, and fluctuating of the curved surface with axial direction, guide rail is in circular, described song in the projection of central axis direction
There are 2 peaks and 2 minimum points in face, and described highs and lows are located at orthogonal two diameters of annulus respectively
On, described curved surface is respectively in accordance with two described diameter symmetries；Roller rolls on guide rail, promotes piston to be axially moveable；
The rolling surface of described roller is adapted to guide rail；
The outer end of piston refers to piston close to one end of drive end bearing bracket or rear end cap, the inner of piston refer to piston away from drive end bearing bracket or
One end of rear end cap；
The waveform to be risen and fallen positioned at the curved surface of the guide rail at piston both ends, it is mutually anti-phase；
The waveform of the curved surface of guide rail has following corresponding pass with the position of left axial groove and right axial groove, left window and right window
System：First stage guide rail and idler wheel driving piston move right, and left axial groove is directed at left window, and left chamber sucks liquid, simultaneously
Right axial groove is directed at right window, and right chamber room excludes liquid；Second stage guide rail and idler wheel driving piston are moved to the left, left axial groove
Right window is directed at, left chamber excludes liquid, while right axial groove alignment left window, right chamber room suction liquid；
Shaft coupling in drive end bearing bracket is coaxially connected with the output shaft of motor, passes through the moving link band piston at piston both ends
Motion；
Rear end cap is square, and side is furnished with positioning hole and a manhole up and down, and positioning hole is placing bearing pin and consolidate with the pump housing
Fixed connection, rear end cap are equipped with a sealing ring on the contact surface of cylinder body side and the pump housing, and have on the manhole of fluid circulation
Put sealing ring；
The forward and backward end cap of the pump housing and guide rail are by pump housing inner chamber enclosure into closed lubricating cavity.
2. float type two dimension double crosslinking piston pump as claimed in claim 1, it is characterised in that：Described left window and right window position
In the diverse location of central shaft.
3. float type two dimension double crosslinking piston pump as claimed in claim 2, it is characterised in that：Described drive end bearing bracket is square, left
Side is evenly equipped with four circular holes, and right side is furnished with four symmetrical positioning holes, positioning hole to place bearing pin and be connected with the pump housing,
Inner surface is furnished with centre bore and a circular big groove, and moving link is placed in circular big groove；Socket rubber outside shaft coupling
Oil sealing and deep groove ball bearing, are placed in the centre bore of drive end bearing bracket；The side of shaft coupling is furnished with cylinder boss, and opposite side is furnished with rectangle
Boss, front and rear surfaces are furnished with U-shaped groove to rectangular boss up and down, and U-shaped groove is close completely through rectangular boss, described drive end bearing bracket
The contact surface of cylinder body side and the pump housing is equipped with a sealing ring.
4. float type two dimension double crosslinking piston pump as claimed in claim 3, it is characterised in that：Described moving link is distributed in cylinder
The both sides of body, and the moving link connected between two cylinder bodies is connected by driving lever.
5. float type two dimension double crosslinking piston pump as claimed in claim 4, it is characterised in that：The upper and lower sides of shaft coupling are circle
Post, two rollers are socketed, and coordinated with the conical camber gap of guide rail.
6. float type two dimension double crosslinking piston pump as claimed in claim 5, it is characterised in that：Two left windows pass through on cylinder body
First annular groove connection, two right windows are connected by the second annular groove on cylinder body.
7. float type two dimension double crosslinking piston pump as claimed in claim 6, it is characterised in that：Described cylinder body is with guide rail with symmetrically
Four bearing pins progress of distribution is circumferentially fixed, and according to the pressure change of left and right chamber in cylinder body, cylinder body can axially float with guide rail.
8. float type two dimension double crosslinking piston pump as claimed in claim 7, it is characterised in that：The roller shaft at described piston both ends
It is socketed with shaft coupling with piston by bearing pin, described roller shaft and shaft coupling can circumferentially float around bearing pin respectively, both ends
Roller can swing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779346.5A CN107781125B (en) | 2016-08-31 | 2016-08-31 | Float type two dimension double crosslinking piston pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610779346.5A CN107781125B (en) | 2016-08-31 | 2016-08-31 | Float type two dimension double crosslinking piston pump |
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| CN107781125A true CN107781125A (en) | 2018-03-09 |
| CN107781125B CN107781125B (en) | 2019-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610779346.5A Active CN107781125B (en) | 2016-08-31 | 2016-08-31 | Float type two dimension double crosslinking piston pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109209819A (en) * | 2018-10-16 | 2019-01-15 | 嘉兴学院 | A kind of piston drive and two dimensional compaction machine |
| CN112986026A (en) * | 2021-02-19 | 2021-06-18 | 长江水利委员会长江科学院 | High-frequency high-load cyclic dynamic load test device and method for rock |
| CN116292262A (en) * | 2022-12-29 | 2023-06-23 | 北京空天技术研究所 | Cross torque transmission structure for piston pump and piston pump with same |
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| EP0890740A2 (en) * | 1997-07-09 | 1999-01-13 | Annovi e Reverberi S.r.l. | Lubrication system for high pressure liquid pumps with cylinders of vertical axis |
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| CN109209819A (en) * | 2018-10-16 | 2019-01-15 | 嘉兴学院 | A kind of piston drive and two dimensional compaction machine |
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| CN116292262A (en) * | 2022-12-29 | 2023-06-23 | 北京空天技术研究所 | Cross torque transmission structure for piston pump and piston pump with same |
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| CN107781125B (en) | 2019-05-28 |
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