CN104791208B - Two dimension etc. such as adds at the deceleration guide rail axial poiston pump - Google Patents

Two dimension etc. such as adds at the deceleration guide rail axial poiston pump Download PDF

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Publication number
CN104791208B
CN104791208B CN201510151253.3A CN201510151253A CN104791208B CN 104791208 B CN104791208 B CN 104791208B CN 201510151253 A CN201510151253 A CN 201510151253A CN 104791208 B CN104791208 B CN 104791208B
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piston
cylinder
guide rail
bearing
chamber
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CN104791208A (en
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阮健
童成伟
李胜
丰章俊
申屠胜男
金丁灿
孟彬
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

The invention discloses a kind of two dimension etc. to add and wait deceleration guide rail axial poiston pump, including the pump housing, cylinder body and piston, cylinder body is placed in the pump housing and fixes with the pump housing and is connected;Have suction oilhole on the pump housing and reveal oil drainback passage, the left and right two ends of the pump housing are installed with left and right end cap by jump ring respectively, the left and right two ends of described cylinder body are installed with respectively has the left rail of the identical roller surface of rolling and right guide rail, and left rail and right guide rail are mutually staggeredly arranged in 90 degree;The lumen centers of cylinder body is provided with piston, and piston can axially make straight reciprocating motion along inner chamber of cylinder block;Be separately installed with the left plug ring concentric with piston and right plug ring at the left and right two ends of piston, left plug ring, right plug ring are separately fixed on cylinder body;The space that described left plug ring, piston left end and cylinder body encloses jointly constitutes left chamber, and the space that right plug ring, piston right-hand member and cylinder body enclose jointly constitutes the volume staggered change of reciprocating motion with piston of right chamber, left chamber and right chamber.

Description

Two dimension etc. such as adds at the deceleration guide rail axial poiston pump
Technical field
The present invention relates to a kind of two dimension etc. and the deceleration guide rail axial poiston pump such as add, belong to Fluid-transmission And the hydraulic pump in control field and hydraulic motor.
Background technology
Piston Piston for pump and cylinder body are as groundwork component.When piston is at the piston of cylinder body In hole reciprocating time, the airtight swept volume chamber that is made up of piston and cylinder body occurs volume to become Change, complete suction, oil extraction process.According to the piston different spread patterns in cylinder body, piston pump It is divided into radial and the big class of axial type two.Radial piston pump is relatively big due to structure complexity, volume, Substituted by axial poiston pump in many occasions.The piston centreline of axial poiston pump is parallel (or substantially parallel) is in the axis of cylinder body.The good airproof performance of this type of pump, has operating pressure High (rated operating pressure is typically up to 32 40MPa), under high pressure remain to keep at a relatively high Volumetric efficiency (typically about 95%) and aggregate efficiency (typically more than 90%), easily Realize the advantage such as lightweight of variable and unit power;Be widely used in pressure processing machinery, Handling equipment, engineering machinery, ship deck machinery, metallurgical machinery, cannon and space skill In art field, and can be by as high pressure and high pressure fuel source.
The operation principle of the axial poiston pump that tradition is common: when power transmission shaft drives cylinder body to rotate, Cylinder body can drive piston rotation, by change between piston and clinoplain or and power transmission shaft between Angle so that piston makees straight reciprocating motion in plunger shaft.Rely on piston in cylinder bore Move back and forth, make seal operation cavity volume change and realize suction, force feed.Traditional axle Many to the part of its internal relative motion of piston pump, to Material texture, requirement on machining accuracy height, Sensitive to oil contamination, the requirement process, use, safeguarded and relatively costly, expensive; Cylinder body rotates with power transmission shaft, and rotary inertia is big, causes startup, stopping, the response of speed governing Speed is slow, is unfavorable for being controlled the output flow of pump by speed governing;Cylinder body internal friction pair is more, Under high-speed rotation, cylinder body temperature rise is very fast, and the abrasion of the part such as valve plate, piston directly affects pump Service life and durability.In addition, due to the restriction of the operation principle of piston pump own, Drive axis one week, each piston can only realize an oil suction and an oil extraction, and its discharge capacity is subject to Arrive restriction.
Summary of the invention
For the drawbacks described above overcoming existing axial poiston pump to exist, the present invention provides a kind of structure Novel compact, volume is little, lightweight, transmission is simple, easy speed governing, discharge capacity is high, utilize piston The motion principle of double freedom (can move axially while rotation) realizes continuous print suction oil Two dimension etc. the deceleration guide rail axial poiston pump such as add.
The technical solution used in the present invention is:
Two dimension etc. such as adds at the deceleration guide rail axial poiston pump, including the pump housing, cylinder body and piston, cylinder body It is placed in the pump housing and fixes with the pump housing and be connected;Have suction oilhole on the pump housing and leakage oil oil return is led to Road, the left and right two ends of the pump housing are installed with left and right end cap by jump ring respectively, its feature It is: the left and right two ends of described cylinder body are installed with respectively has the identical roller surface of rolling Left rail and right guide rail, and left rail and right guide rail be mutually staggeredly arranged in 90 degree, i.e. left The highs and lows of guide rail is corresponding with the minimum point of right guide rail and peak respectively;
The lumen centers of described cylinder body is provided with piston, and described piston can be along cylinder body Chamber axially make straight reciprocating motion;Be separately installed with at the left and right two ends of described piston with Left plug ring that piston is concentric and right plug ring, described left plug ring, right plug ring are separately fixed at cylinder body On;The space that described left plug ring, piston left end and cylinder body encloses jointly constitutes left chamber, institute Space that right plug ring, piston right-hand member and the cylinder body stated encloses jointly constitutes right chamber, left chamber with The volume of right chamber is with the staggered change of reciprocating motion of piston;When piston from high order end toward low order end During axially-movable, left chamber's volume becomes larger, and right cavity volume tapers into;On the contrary, when Piston from low order end toward high order end axially-movable time, right cavity volume becomes larger, left chamber hold Amass and taper into;
It is provided with shoulder on described piston, the surface of described shoulder offers and is evenly arranged Four rectangle grooves, and the notch position of four rectangle grooves is staggeredly arranged;Described Cylinder body correspondence position on be evenly distributed with two group windows corresponding with four rectangle grooves, And two group windows are mutually communicated by being opened in the cannelure of cylinder surface;During work, on piston Rectangle groove link up with the window on cylinder body, the chamber that volume becomes larger by link up Rectangle groove and window from fuel tank oil suction, the chamber that volume is gradually reduced by link up groove With window, intracavity fluid is discharged;
The left end of described piston is provided with one shape pin axle, and the axle head of described one shape pin axle is symmetrical Being provided with one group of left bearing big roller, the left end of described one shape pin axle is provided with one and left end cap The fixing roller cover connected, described one shape pin axle is fastened on piston;The right side of described piston End is provided with cross bearing pin, and the axle head of described cross bearing pin is respectively symmetrically and is provided with one group of right axle Holding big roller and one group for transmitting the bearing trundle of moment of torsion, described cross bearing pin is fastened on On piston;Described left bearing big roller and right bearing big roller are separately positioned on a described left side and lead On rail and right guide rail, and can roll along left rail and right guide rail respectively;
Described cross bearing pin is arranged on the right end cap having through hole by 2D shaft coupling, nothing Tight fit crossed by brush motor and described 2D shaft coupling, and described brushless electric machine passes through 2D shaft coupling Device transfers torque to bearing trundle, and band dynamic bearing trundle rotates, thus drives cross pin Axle, piston rotate together with one shape pin axle.When driven by motor 2D shaft coupling rotates, 2D Shaft coupling transfers a torque to piston by the bearing trundle on cross bearing pin, so that live Plug rotates, while piston rotates and move back and forth and realize the switching of suction oil pocket and continuous print suction Oil extraction.
Described left rail and right guide rail all in cylinder, described cylindrical end face have to On the arc-shaped curved surface of outer lug, and the cylinder at the minimum point two ends of described arc-shaped curved surface right Claim to be provided with the installing hole matched with pin;Described cylindrical center offers and interior six The through hole of corner bolt coupling.
Described right bearing big roller and bearing trundle are separately positioned on the groove of 2D shaft coupling On;Described 2D shaft coupling is arranged on by the first elastic spring and lock washer and has through hole Right end cap on.
The right-hand member of described 2D shaft coupling has the rectangle keyway coordinated with brushless electric machine.
Install between described right end cap and 2D shaft coupling and be used for sealing and reduce shaft coupling and end The J-shaped oil seal without framework of the frictional force effect of lid and copper sheet.
Described left bearing big roller, right bearing big roller, bearing trundle respectively by wheel case, Rolling bearing, the second elastic spring and lock washer are constituted, and described rolling bearing is set on axle End, described wheel case is set on rolling bearing by the second elastic spring and lock washer.
The cannelure for placing O-ring seals is offered on described left and right end cap.
Described left plug ring, right plug ring are fixed on cylinder body by the 3rd elastic spring respectively.
Described one shape pin axle, cross bearing pin are fastened on piston by hexagon socket head cap screw respectively Left and right end.
The operation principle of the present invention:
Piston is fixed together by hexagon socket head cap screw with cross bearing pin, one shape pin axle, brushless electricity Machine transfers torque to the bearing trundle on cross bearing pin, band dynamic bearing by 2D shaft coupling Trundle rotates, and right bearing big roller rotates together with 2D shaft coupling along with bearing trundle Meanwhile, right bearing big roller also can roll on right guide rail.In like manner, on left end one shape pin axle Left bearing big roller also can roll while rotating on interior guide rail.When left bearing big roller rolls When moving the peak of left rail, i.e. right bearing big roller is rolled to the minimum point of right guide rail, lives Plug moves axially to high order end;When left bearing big roller is rolled to the minimum point of left rail, i.e. Right bearing big roller is rolled to the peak of right guide rail, and piston moves axially to low order end.Along with Left bearing big roller and right bearing big roller continuous rolling on left rail, right guide rail respectively, just Piston can be made to carry out axially consecutive reciprocating motion, it is achieved that piston is being longitudinally continuous the same of rotation Time axially having continuous print to move back and forth again.
Beneficial effects of the present invention is embodied in:
1, propose axle and piston integrated design, overall structure is greatly simplified, utilize and live The rotation of plug and double freedoms of motion (2D) structure of slip instead of conventional axial piston pump Oil distribution casing structure, realize continuous suction functional oil, and move back and forth once, suction oil Each the most once, many compared with conventional axial piston pump once.
2, many friction pairs structure of relatively conventional piston pump, the present invention only has friction pair, makes Obtain efficiency to be greatly improved.
3, achieving miniaturization, on the premise of ensureing flow, cost is substantially reduced.
4, the rectangle groove on piston is linked up with the window on cylinder body, and volume becomes larger Chamber by link up rectangle groove and window from fuel tank oil suction, the chamber that volume is gradually reduced By the groove linked up and window, intracavity fluid is discharged;Piston successively moves back and forth and makes a left side The volume of right chamber constantly staggered change, it is achieved continuous print oil suction and oil extraction.
5, left rail is identical with the structure of right guide rail, left bearing big roller and right bearing big roller The curve rolled on respective guide rail is identical, and both misplace 90 degree of layouts, left rail Highs and lows corresponding with the minimum point of right guide rail and peak respectively.
Accompanying drawing explanation
Fig. 1 is the structural representation that two dimension etc. such as adds at the deceleration guide rail axial poiston pump.
Fig. 2 is 2D shaft coupling explosive view.
Fig. 3 is piston and one shape pin axle, cross bearing pin assembling schematic diagram.
Fig. 4 a is piston schematic diagram.
Fig. 4 b is the Section A-A figure in Fig. 4 a.
Fig. 5 a is cylinder body schematic diagram.
Fig. 5 b is the profile of the B-B in Fig. 5 a.
Fig. 6 a be piston movement to high order end time, groove e, f, g, h on piston are not and cylinder Window a, b, c, d on body occurs to link up schematic diagram.
Fig. 6 b is the D-D sectional view in Fig. 6 a.
Fig. 6 c is piston rotation and starts toward right-hand member mobile, groove e, f, g, the h on piston The schematic diagram linked up with window a, d, b, the c on cylinder body respectively.
Fig. 6 d is the E-E sectional view in Fig. 6 c.
Fig. 6 e is piston when moving to low order end, and groove e, f, g, h on piston are not and cylinder The schematic diagram that window a, b, c, d on body no longer links up.
Fig. 6 f is the F-F sectional view in Fig. 6 e.
Fig. 7 is left rail schematic diagram.
Fig. 8 is right guide rail schematic diagram
Fig. 9 a, 9b, 9c are left rail or right guide rail displacement diagram.
Detailed description of the invention
Referring to figs. 1 through Fig. 9 c, two dimension etc. such as adds at the deceleration guide rail axial poiston pump, including the pump housing 1, Cylinder body 2 and piston 3, cylinder body 2 is placed in the pump housing 1 and fixes with the pump housing 1 and is connected;The pump housing 1 On have suction oilhole and reveal oil drainback passage, the left and right two ends of the pump housing 1 respectively by card Spring 4 is installed with left and right end cap 5,6, and the left and right two ends of described cylinder body 2 are respectively It is installed with left rail 7 and the right guide rail 8 with the identical roller surface of rolling, and left rail 7 Mutually be staggeredly arranged in 90 degree with right guide rail 8, i.e. the highs and lows of left rail 7 divides Not corresponding with the minimum point of right guide rail 8 and peak;
The lumen centers of described cylinder body 2 is provided with piston 3, and described piston 3 can edge Cylinder body 2 inner chamber axially make straight reciprocating motion;Divide at the left and right two ends of described piston 3 The left plug ring 9 concentric with piston 3 and right plug ring 10 be not installed, described left plug ring 9, right Plug ring 10 is separately fixed on cylinder body 2;Described left plug ring, piston left end and cylinder body are common The space enclosed constitutes left chamber, and described right plug ring, piston right-hand member and cylinder body encloses jointly Space constitutes the volume staggered change of reciprocating motion with piston of right chamber, left chamber and right chamber Change;When piston from high order end toward low order end axially-movable time, left chamber's volume becomes larger, right Cavity volume tapers into;On the contrary, when piston from low order end toward high order end axially-movable time, right Cavity volume becomes larger, and left chamber's volume tapers into;
It is provided with shoulder on described piston 3, the surface of described shoulder offers uniform cloth Four rectangle grooves e, f, g, the h put, and the notch position of four rectangle grooves is the most wrong Open layout;It is evenly distributed with relative with four rectangle grooves on the correspondence position of described cylinder body 2 Two group window a, c and b, the d answered, and two group windows are by being opened in the ring on cylinder body 2 surface Shape groove is mutually communicated;During work, the rectangle groove on piston 3 and the window generation ditch on cylinder body Logical, the chamber that volume becomes larger, is held from fuel tank oil suction by the rectangle groove linked up and window Intracavity fluid is discharged by the long-pending chamber being gradually reduced by the groove linked up and window;
The left end of described piston 3 is provided with one shape pin axle 11, described one shape pin axle 11 Axle head is symmetrically installed with one group of left bearing big roller 111, the left end peace of described one shape pin axle 11 Fixing, equipped with one, the roller cover 13 being connected with left end cap, described one shape pin axle 11 is fastened on work On plug 3;The right-hand member of described piston 3 is provided with cross bearing pin 12, described cross bearing pin The axle head of 12 is respectively symmetrically and is provided with one group of right bearing big roller 121 and one group for transmitting torsion The bearing trundle 122 of square, described cross bearing pin 12 is fastened on piston 3;Described Left bearing big roller 111 and right bearing big roller 121 are separately positioned on described left rail 7 He On right guide rail 8, and can roll along left rail 7 and right guide rail 8 respectively;
Described cross bearing pin 12 is arranged on, by 2D shaft coupling 14, the right end cap having through hole On 6, brushless electric machine 15 crosses tight fit, described brushless electricity with described 2D shaft coupling 14 Machine 15 transfers torque to bearing trundle 122 by 2D shaft coupling 14, and band dynamic bearing is little Roller 122 rotates, thus drives cross bearing pin 12, piston 3 to turn together with one shape pin axle 11 Dynamic.When motor 15 drives 2D shaft coupling 14 to rotate, 2D shaft coupling 14 passes through cross pin Bearing trundle 122 on axle 12 transfers a torque to piston 3, so that piston 3 revolves Turn, while piston 3 rotates and reciprocating motion realizes switching and the continuous print suction of suction oil pocket Oil.
Described left rail 7 and right guide rail 8 are in cylinder, and described cylindrical end face has The arc-shaped curved surface 71,81 of outwardly convex, and the minimum point two ends of described arc-shaped curved surface The installing hole 72,82 matched with pin it is symmetrically arranged with on cylinder;Described cylinder Center offer the through hole 73,83 mated with hexagon socket head cap screw.
Described right bearing big roller 121 and bearing trundle 122 are separately positioned on 2D shaft coupling On the groove 141 of device 14;Described 2D shaft coupling 14 is by the first elastic spring 161 He Lock washer 162 is arranged on the right end cap 6 having through hole.
The right-hand member of described 2D shaft coupling 14 has the rectangle keyway coordinated with brushless electric machine 15.
Install between described right end cap 6 and 2D shaft coupling 14 and be used for sealing and reducing shaft coupling The J-shaped oil seal without framework 18 of the frictional force effect of device and end cap and copper sheet 19.
Described left bearing big roller 111, right bearing big roller 121, bearing trundle 122 points Not by wheel case 1212, rolling bearing the 1211, second elastic spring 1214 and lock washer 1213 Constituting, described rolling bearing is set on axle head, described wheel case by the second elastic spring and Lock washer is set on rolling bearing.
The ring for placing O-ring seals 20 is offered on described left and right end cap 5,6 Shape groove.
Described left plug ring, right plug ring 9,10 are fixed on by the 3rd elastic spring 21 respectively On cylinder body 2.
Described one shape pin axle 11, cross bearing pin 12 are fastened by hexagon socket head cap screw 17 respectively Left and right end at piston 3.
Operation principle is as follows:
Piston is fixed together by hexagon socket head cap screw with cross bearing pin, one shape pin axle, brushless electricity Machine transfers torque to the bearing trundle on cross bearing pin, band dynamic bearing by 2D shaft coupling Trundle rotates, and right bearing big roller rotates together with 2D shaft coupling along with bearing trundle Meanwhile, right bearing big roller also can roll on right guide rail.In like manner, on left end one shape pin axle Left bearing big roller also can roll while rotating on interior guide rail.When left bearing big roller rolls When moving the peak of left rail, i.e. right bearing big roller is rolled to the minimum point of right guide rail, lives Plug moves axially to high order end;When left bearing big roller is rolled to the minimum point of left rail, i.e. Right bearing big roller is rolled to the peak of right guide rail, and piston moves axially to low order end.Along with Left bearing big roller and right bearing big roller continuous rolling on left rail, right guide rail respectively, just Piston can be made to carry out axially consecutive reciprocating motion, it is achieved that piston is being longitudinally continuous the same of rotation Time axially having continuous print to move back and forth again.
In the present embodiment, as shown in Fig. 4 a to 5b, four rectangle grooves on piston are respectively E, f, g, h, its notch position mutually staggers, i.e. e, h notch and f, g notch direction phase Instead.Two group windows corresponding with rectangle groove on cylinder body are a, c and b, d, a, c window It is mutually communicated by being opened in the cannelure of cylinder surface with b, d window.
As shown in Fig. 6 a to 6f, piston rotates counterclockwise (seeing from left to right), a, b, c, D is the window channel on cylinder body, and a, c are suction passage, and b, d are oil drain passage.e、f、 G, h are the rectangle groove on piston.
Fig. 6 a and 6b be piston movement to high order end time, now the rectangle groove e on piston, f, G, h do not link up with window a, b, c, the d on cylinder body.
Start mobile, as described relative to figs. 6c and 6d, on piston while piston rotation toward right-hand member Rectangle groove e, f, g, h respectively with on cylinder body window a, d, b, c link up, cavity volume The left chamber become larger is due to from absorption, by ditch circulation passage e-a, h-c oil suction from fuel tank; Fluid is squeezed by the right chamber that volume tapers into by the oil of intracavity by ditch circulation passage f-d, g-b Go out.
As shown in Fig. 6 e and 6f, when piston moves to low order end, the now rectangle ditch on piston Groove e, f, g, h no longer do not link up with window a, b, c, the d on cylinder body.When piston continues Rotate, then piston starts toward left movement, and right chamber begins through ditch circulation passage f-a, g-c from oil Case oil suction;Oil is extruded by left chamber by ditch circulation passage e-b, h-d.
Content described in this specification embodiment is only the row of the way of realization to inventive concept Lifting, protection scope of the present invention is not construed as being only limitted to the concrete shape that embodiment is stated Formula, protection scope of the present invention also and is caned according to present inventive concept in those skilled in the art The equivalent technologies means expected.

Claims (9)

1. two dimension etc. such as add at the deceleration guide rail axial poiston pump, including the pump housing, cylinder body and piston, Cylinder body is placed in the pump housing and fixes with the pump housing and is connected;Have suction oilhole on the pump housing and reveal oil time Oil passage, the left and right two ends of the pump housing are installed with left and right end cap by jump ring respectively, its It is characterised by: the left and right two ends of described cylinder body are installed with respectively has identical roller rolling song The left rail in face and right guide rail, and left rail and right guide rail be mutually staggeredly arranged in 90 degree, The i.e. highs and lows of left rail is corresponding with the minimum point of right guide rail and peak respectively;
The lumen centers of described cylinder body is provided with piston, and described piston can be along cylinder body Chamber axially make straight reciprocating motion;Be separately installed with at the left and right two ends of described piston with Left plug ring that piston is concentric and right plug ring, described left plug ring, right plug ring are separately fixed at cylinder body On;The space that described left plug ring, piston left end and cylinder body encloses jointly constitutes left chamber, institute Space that right plug ring, piston right-hand member and the cylinder body stated encloses jointly constitutes right chamber, left chamber with The volume of right chamber is with the staggered change of reciprocating motion of piston;When piston from high order end toward low order end During axially-movable, left chamber's volume becomes larger, and right cavity volume tapers into;On the contrary, when Piston from low order end toward high order end axially-movable time, right cavity volume becomes larger, left chamber hold Amass and taper into;
It is provided with shoulder on described piston, the surface of described shoulder offers and is evenly arranged Four rectangle grooves, and the notch position of four rectangle grooves is staggeredly arranged;Described Cylinder body correspondence position on be evenly distributed with two group windows corresponding with four rectangle grooves, And two group windows are mutually communicated by being opened in the cannelure of cylinder surface;During work, on piston Rectangle groove link up with the window on cylinder body, the chamber that volume becomes larger by link up Rectangle groove and window from fuel tank oil suction, the chamber that volume is gradually reduced by link up groove With window, intracavity fluid is discharged;
The left end of described piston is provided with one shape pin axle, and the axle head of described one shape pin axle is symmetrical Being provided with one group of left bearing big roller, the left end of described one shape pin axle is provided with one and left end cap The fixing roller cover connected, described one shape pin axle is fastened on piston;The right side of described piston End is provided with cross bearing pin, and the axle head of described cross bearing pin is respectively symmetrically and is provided with one group of right axle Holding big roller and one group for transmitting the bearing trundle of moment of torsion, described cross bearing pin is fastened on On piston;Described left bearing big roller and right bearing big roller are separately positioned on a described left side and lead On rail and right guide rail, and can roll along left rail and right guide rail respectively;
Described cross bearing pin is arranged on the right end cap having through hole by 2D shaft coupling, nothing Tight fit crossed by brush motor and described 2D shaft coupling, and described brushless electric machine passes through 2D shaft coupling Device transfers torque to bearing trundle, and band dynamic bearing trundle rotates, thus drives cross pin Axle, piston rotate together with one shape pin axle.
2. two dimension as claimed in claim 1 etc. add and wait deceleration guide rail axial poiston pump, its spy Levy and be: described left rail and right guide rail are all in cylinder, and described cylindrical end face has Have on the arc-shaped curved surface concaved, and the cylinder at the minimum point two ends of described arc-shaped curved surface It is symmetrically arranged with the installing hole matched with pin;Described cylindrical center offers with interior The through hole of hex bolts coupling.
3. two dimension as claimed in claim 2 etc. add and wait deceleration guide rail axial poiston pump, its spy Levy and be: described right bearing big roller and bearing trundle are separately positioned on 2D shaft coupling On groove;Described 2D shaft coupling is arranged on by the first elastic spring and lock washer and has On the right end cap of through hole.
4. two dimension as claimed in claim 3 etc. add and wait deceleration guide rail axial poiston pump, its spy Levy and be: the right-hand member of described 2D shaft coupling has the rectangle keyway coordinated with brushless electric machine.
5. two dimension as claimed in claim 4 etc. add and wait deceleration guide rail axial poiston pump, its spy Levy and be: install between described right end cap and 2D shaft coupling and be used for sealing and reducing shaft coupling The J-shaped oil seal without framework of the frictional force effect with end cap and copper sheet.
6. the two dimension as described in one of Claims 1 to 5 etc. such as add at the deceleration guide rail axial poiston pump, It is characterized in that: described left bearing big roller, right bearing big roller, bearing trundle are respectively It is made up of wheel case, rolling bearing, the second elastic spring and lock washer, described rolling bearing Being set on axle head, described wheel case is set in the axis of rolling by the second elastic spring and lock washer Hold.
7. two dimension as claimed in claim 6 etc. add and wait deceleration guide rail axial poiston pump, its spy Levy and be: on described left and right end cap, offer the cannelure for placing O-ring seals.
8. two dimension as claimed in claim 7 etc. add and wait deceleration guide rail axial poiston pump, its spy Levy and be: described left plug ring, right plug ring are fixed on cylinder body by the 3rd elastic spring respectively.
9. two dimension as claimed in claim 8 etc. add and wait deceleration guide rail axial poiston pump, its spy Levy and be: described one shape pin axle, cross bearing pin are fastened on piston by hexagon socket head cap screw respectively Left and right end.
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CN105484962A (en) * 2015-12-18 2016-04-13 浙江工业大学 Two-dimensional dual axial piston pump
CN106089621B (en) * 2016-07-19 2019-01-08 浙江工业大学 Two-dimentional cone roller piston pump
CN107795447B (en) * 2016-08-31 2019-05-28 浙江工业大学 Entrance boosting type two dimension double crosslinking piston pump
CN106837725B (en) * 2016-12-29 2019-01-08 浙江工业大学 two-dimensional axial plunger pump
CN108301999B (en) * 2017-12-29 2019-10-11 浙江工业大学 A kind of two-dimentional plunger pump of space cam transmission
CN108331890B (en) * 2017-12-29 2020-07-31 浙江工业大学 Spatial cam self-aligning transmission mechanism of two-dimensional plunger pump
CN108278186B (en) * 2017-12-29 2019-05-28 浙江工业大学 A kind of two-dimentional plunger hydraulic pamp of water-oil separating formula space cam transmission

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JP3514631B2 (en) * 1998-07-31 2004-03-31 イートン機器株式会社 Axial piston pump / motor
CN201546948U (en) * 2009-11-21 2010-08-11 浙江工业大学 Internal loop piston-type pump
CN202673598U (en) * 2012-04-21 2013-01-16 启东高压油泵有限公司 Novel eight-piston axial piston pump
KR101409572B1 (en) * 2013-02-28 2014-06-20 주식회사프로스트 A cycloid type compressor
CN204591606U (en) * 2015-04-01 2015-08-26 浙江工业大学 Two dimension etc. such as to add at the deceleration guide rail axial piston pump

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