CN103925182A - Stationary-cylinder double-swash-plate axial plunger pump - Google Patents
Stationary-cylinder double-swash-plate axial plunger pump Download PDFInfo
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- CN103925182A CN103925182A CN201410150519.8A CN201410150519A CN103925182A CN 103925182 A CN103925182 A CN 103925182A CN 201410150519 A CN201410150519 A CN 201410150519A CN 103925182 A CN103925182 A CN 103925182A
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- swash plate
- plunger
- oil
- pump
- pressed
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Abstract
Disclosed is a stationary-cylinder double-swash-plate axial plunger pump. Two swash plates are arranged on two sides of a cylinder, movement of the swash plates is inputted via a transmission shaft and transmitted via key connection, more than two plungers are arranged on the cylinder, the plungers are driven to move by the two swash plates and springs jointly, main stressed parts are in surface contact, stress state is good, and transmission is smooth. The cylinder is fixed without rotating with the transmission shaft so as to reduce rotational inertia of the pump, is beneficially used in occasions needing to frequently regulate speed of the pump, does not generate centrifugal force, and can work at high rotational speed; due to the design of the two swash plates, displacement of the pump is increased greatly; vibration and wear cannot be caused, and the pump has the advantages of compact structure and simple transmission.
Description
Technical field
The invention belongs to axial piston pump technical field, be specifically related to the two inclined plate axial piston pump that a kind of cylinder body is static.
Background technique
Axial piston pump is that a class plunger is parallel to the volume type oil hydraulic pump that transmission shaft is arranged, have simple in structure, volume is little, noise is low, efficiency is high, have the advantages such as suction capacity, be widely used in the hydraulic system in the fields such as forging and stamping, metallurgy, boats and ships.
The working principle of traditional axial piston pump is normally: transmission shaft directly or indirectly drives cylinder body to rotate, in the pump housing, be installed with a swash plate, when the plunger in cylinder body rotates with cylinder body, under the driving of swash plate, to-and-fro motion in plunger cavity, thereby periodically change the volume of plunger cavity, realize the action of oil suction and force feed.Because plunger cavity rotates with transmission shaft, therefore total rotary inertia of pump is larger, the start and stop of pump and speed governing speed of response are slower, be unfavorable for directly regulating by controlling rotating speed the output flow of pump, because fluid is with cylinder body high speed rotating, fluid is inner easily produces cavitation erosion and temperature rise, thereby is unfavorable for improving volumetric efficiency and the capacity usage ratio of pump, and because the axial force that the swash plate in the pump housing is suffered is uneven, therefore easily produce vibration and cause parts depreciation.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the invention reside in and propose the static two inclined plate axial piston pump of a kind of cylinder body, there is compact structure, transmission is simple, and rotary inertia is little, and axial force is little, and rotating speed is high, the advantage that discharge capacity is large.
In order to achieve the above object, the technological scheme that the present invention takes is:
The two inclined plate axial piston pump that a kind of cylinder body is static, comprise pump case 2, cylinder body 3 is fixedly mounted in pump case 2, by key, connect and realize circumferentially location, connecting gland 4 is arranged on the end face of pump case 2, cylinder body 3 is pressed on the shoulder of pump case 2 inside, realize the axially locating of pump case 2, the second pump end cap 5 is arranged on the end face that connects gland 4, the first pump end cap 13 is arranged on the opposite side end face of pump case 2, the first swash plate 10 is bearing in the first pump end cap 13 and pump case 2 by the first rolling bearing 15 and the second rolling bearing 11, the inner ring of the second rolling bearing 11 is pressed on the shoulder of a side on the first swash plate 10, outer ring is pressed on the shoulder in pump case 2, the inner ring of the first rolling bearing 15 is pressed on the shoulder of the first swash plate 10 opposite sides, its outer ring compresses by the axle head gland 16 being arranged on the first pump end cap 13, the second swash plate 8 is arranged on pump case 2 opposite sides, by the 3rd rolling bearing 9, be bearing in and connect in gland 4, the outer ring of the 3rd rolling bearing 9 is pressed on the shoulder connecting in gland 4, the shoulder of the second swash plate 8 is pressed on the inner ring of the 3rd rolling bearing 9, transmission shaft 7 and the first swash plate 10, the second swash plate 8 is fixedly connected with, by key, connect and realize circumferentially location, between transmission shaft 7 and cylinder body 3, can relatively rotate, the 4th rolling bearing 6 is bearing in transmission shaft 7 in the second pump end cap 5, one side stage shoulder of transmission shaft 7 is pressed on the step hole of the first swash plate 10, the inner ring of the 4th rolling bearing 6 is pressed on the shoulder of transmission shaft 7 opposite sides, step hole in the second pump end cap 5 is pressed on the outer ring of the 4th rolling bearing 6, realize the first swash plate 10, the axially locating of the second swash plate 8 and transmission shaft 7, the first swash plate 10 is relative with the inclined-plane true dip direction of the second swash plate 8,
On cylinder body 3, there is plural axial plunger hole 1, plunger hole 1 is evenly distributed on same circumference, the two ends of each plunger hole 1 are separately installed with a plunger 20, plunger 20 can move vertically in plunger hole 1, the head of each plunger 20 is provided with piston shoes 19, between piston shoes 19 and plunger 20, pass through bulb hinged, between every pair of plunger 20 in same plunger hole 1, be connected with a spring 22, spring 22 is pressed in the plunger of both sides 20 and piston shoes 19 respectively on the first swash plate 10 and the second swash plate 8, can relative sliding between the inclined-plane of piston shoes 19 bottom surfaces and the first swash plate 10 or the second swash plate 8,
On cylinder body 3, be also evenly distributed with plural plunger cavity oil through 21, its position is corresponding with plunger hole 1, and each plunger cavity oil through 21 is initial by the end face of the same side, is communicated to the middle part of plunger hole 1;
The first swash plate 10 is provided with boss towards a side of cylinder body 3, and it and cylinder body 3 end faces are adjacent to, and can relative sliding, on raised head face on the first swash plate 10, have symmetrically oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23, they are communicated with the plunger cavity oil through 21 within the scope of corresponding angle respectively, mutually isolated between oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23, opposite side at the first swash plate 10, have abreast oil-feed remittance oil ring groove 12 and fuel-displaced remittance oil ring groove 14, oil-feed remittance oil ring groove 12 is communicated with oil-feed waist shaped hole 24, fuel-displaced remittance oil ring groove 14 is communicated with fuel-displaced waist shaped hole 23, on the first pump end cap 13, have filler opening 18 and oil outlet 17, filler opening 18, oil outlet 17 converges oil ring groove 12 with oil-feed respectively, fuel-displaced remittance oil ring groove 14 is communicated with.
Described oil-feed waist shaped hole 24 and the isolated width of fuel-displaced waist shaped hole 23 are not less than the diameter of plunger cavity oil through 21.
The present invention has the following advantages:
1) compact structure, transmission is simple.Cylinder body 3 both sides of this pump dispose two swash plates: the first swash plate 10 and the second swash plate 8, and cylinder body 3 is provided with plural plunger 20, the first swash plates 10 and has flow effect simultaneously, takes full advantage of the space in pump case 2; The motion of swash plate is inputted by transmission shaft 7, and is connected and transmitted by key, and plunger 20 motions are driven jointly by the first swash plate 10, the second swash plate 8 and spring 22, are all face contact between main stressed part, and stress is good, stable drive.
2) rotary inertia is little, is active in one's movements, and can realizes high rotating speed.The thrust that the rotation of this pump by the first swash plate 10 and the second swash plate 8 produces and elastic force drive plunger 20 to-and-fro motion of spring 22, cylinder body 3 is fixing, with transmission shaft 7, does not rotate, thereby has reduced the rotary inertia of pump, be beneficial to be used in need to be to the numerous speed governing of pumping frequency occasion; Because plunger 20 does not rotate, do not produce centrifugal force, therefore, between piston shoes 19 and swash plate inclined-plane, can realize good laminating, can the in the situation that of higher rotation speed, work.
3) discharge capacity is large, and axial force is little.This pump is two inclined plate design, and compared with monocline dish axial piston pump, plunger 20 quantity double, and has therefore greatly improved pump delivery; Meanwhile, axial force when two inclined plate design can also extrude plunger 20 and eject is offset, and prevents that unbalanced responsive to axial force is in swash plate and cylinder body 3, causes vibration and wearing and tearing.
Accompanying drawing explanation
Fig. 1 is axial sectional view of the present invention.
Fig. 2 is the sectional view in the A-A cross section of Fig. 1.
Fig. 3 is the sectional view in the B-B cross section of Fig. 1.
Fig. 4 is the sectional view in the C-C cross section of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to Fig. 1, Fig. 2 and Fig. 3, the two inclined plate axial piston pump that a kind of cylinder body is static, comprise pump case 2, cylinder body 3 is fixedly mounted in pump case 2, by key, connect and realize circumferentially location, connecting gland 4 is arranged on the end face of pump case 2 by screw, cylinder body 3 is pressed on the shoulder of pump case 2 inside, realize the axially locating of pump case 2, the second pump end cap 5 is arranged on the end face that connects gland 4 by screw, the first pump end cap 13 is arranged on the opposite side end face of pump case 2, the first swash plate 10 is bearing in the first pump end cap 13 and pump case 2 by the first rolling bearing 15 and the second rolling bearing 11, the inner ring of the second rolling bearing 11 is pressed on the shoulder of a side on the first swash plate 10, outer ring is pressed on the shoulder in pump case 2, the inner ring of the first rolling bearing 15 is pressed on the shoulder of the first swash plate 10, its outer ring compresses by the axle head gland 16 being arranged on the first pump end cap 13, the second swash plate 8 is arranged on pump case 2 opposite sides, by the 3rd rolling bearing 9, be bearing in and connect in gland 4, the outer ring of the 3rd rolling bearing 9 is pressed on the shoulder connecting in gland 4, the shoulder of the second swash plate 8 is pressed on the inner ring of the 3rd rolling bearing 9, transmission shaft 7 is fixedly connected with the second swash plate 8 with the first swash plate 10, by key, connect and realize circumferentially location, between transmission shaft 7 and cylinder body 3, can relatively rotate, the 4th rolling bearing 6 is bearing in transmission shaft 7 in the second pump end cap 5, one side stage shoulder of transmission shaft 7 is pressed on the step hole of the first swash plate 10, the inner ring of the 4th rolling bearing 6 is pressed on the shoulder of transmission shaft 7 opposite sides, step hole in the second pump end cap 5 is pressed on the outer ring of the 4th rolling bearing 6, above-mentioned connection realizes the first swash plate 10 jointly, the axially locating of the second swash plate 8 and transmission shaft 7, guarantee that the first swash plate 10 and the second swash plate 8 can rotate under the drive of transmission shaft 7 simultaneously, the first swash plate 10 is relative with the inclined-plane true dip direction of the second swash plate 8.
With reference to Fig. 1, on cylinder body 3, there is plural axial plunger hole 1, plunger hole 1 is evenly distributed on same circumference, the two ends of each plunger hole 1 are separately installed with a plunger 20, plunger 20 can move vertically in plunger hole 1, the head of each plunger 20 is provided with piston shoes 19, between piston shoes 19 and plunger 20, pass through bulb hinged, in several angle, freely rotate and swing, between every pair of plunger 20 in same plunger hole 1, be also connected with a spring 22, spring 22 is pressed in the plunger of both sides 20 and piston shoes 19 respectively on the first swash plate 10 and the second swash plate 8, can relative sliding between the inclined-plane of piston shoes 19 bottom surfaces and the first swash plate 10 or the second swash plate 8.
See figures.1.and.2, be also evenly distributed with plural plunger cavity oil through 21 on cylinder body 3, its position is corresponding with plunger hole 1, and each plunger cavity oil through 21 is initial by the end face of the same side, is communicated to the middle part of plunger hole 1.
With reference to Fig. 1, Fig. 2 and Fig. 4, the first swash plate 10 is provided with boss towards a side of cylinder body 3, and it and cylinder body 3 end faces are adjacent to, and can relative sliding, on raised head face on the first swash plate 10, have symmetrically oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23, they are communicated with the plunger cavity oil through 21 within the scope of corresponding angle respectively, mutually isolated between oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23, isolated width is not less than the diameter of plunger cavity oil through 21, opposite side at the first swash plate 10, have abreast oil-feed remittance oil ring groove 12 and fuel-displaced remittance oil ring groove 14, oil-feed remittance oil ring groove 12 is communicated with oil-feed waist shaped hole 24, fuel-displaced remittance oil ring groove 14 is communicated with fuel-displaced waist shaped hole 23, on the first pump end cap 13, have filler opening 18 and oil outlet 17, they converge oil ring groove 12 with oil-feed respectively, fuel-displaced remittance oil ring groove 14 is communicated with.
Working principle of the present invention: the first swash plate 10 is relative with the inclined-plane true dip direction of the second swash plate 8, make two plungers 20 in same plunger hole 1 to be synchronously pressed into and to eject, symmetry plane between oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23 is identical with the axial symmetry plane of swash plate, the sense of rotation of transmission shaft 7 is made as the counter clockwise direction at Fig. 2 visual angle, in Fig. 1, the plunger 20 of the vertical outside side of paper, equal states in being ejected, paper plunger 20 is inwards in bulged-in state, in ejecting the half-turn plunger hole 1 of state, by plunger cavity oil through 21, be communicated with oil-feed waist shaped hole 24, and then be communicated with oil-feed remittance oil ring groove 12, by filler opening 18, from outside oil circuit, suck fluid, in being pressed into the half-turn plunger hole 1 of state, by plunger cavity oil through 21, be communicated with fuel-displaced waist shaped hole 23, and then be communicated with fuel-displaced remittance oil ring groove 14, by oil outlet 17, fluid is discharged to outside oil circuit.When the first swash plate 10 and the second swash plate 8 rotate under the drive of transmission shaft 7, each plunger hole 1 on cylinder body 3 be pressed into and ejection state between dynamically conversion, oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23 rotate with the first swash plate 10, can guarantee that the plunger hole 1 in oil suction state is communicated with oil-feed waist shaped hole 24 all the time, plunger hole 1 in force feed state is communicated with fuel-displaced waist shaped hole 23 all the time, when transmission shaft 7 rotates continuously, all plungers 20 are worked simultaneously, realize continuously and suck fluid and discharge from oil outlet 17 from filler opening 18.
Claims (2)
1. the two inclined plate axial piston pump that cylinder body is static, comprise pump case (2), it is characterized in that: cylinder body (3) is fixedly mounted in pump case (2), by key, connect and realize circumferentially location, connecting gland (4) is arranged on the end face of pump case (2), cylinder body (3) is pressed on the inner shoulder of pump case (2), realize the axially locating of pump case (2), the second pump end cap (5) is arranged on the end face that connects gland (4), the first pump end cap (13) is arranged on the opposite side end face of pump case (2), the first swash plate (10) is bearing in the first pump end cap (13) and pump case (2) by the first rolling bearing (15) and the second rolling bearing (11), the inner ring of the second rolling bearing (11) is pressed on the shoulder of the upper side of the first swash plate (10), outer ring is pressed on the shoulder in pump case (2), the inner ring of the first rolling bearing (15) is pressed on the shoulder of the first swash plate (10) opposite side, its outer ring compresses by the axle head gland (16) being arranged on the first pump end cap (13), the second swash plate (8) is arranged on pump case (2) opposite side, by the 3rd rolling bearing (9), be bearing in and connect in gland (4), the outer ring of the 3rd rolling bearing (9) is pressed on the shoulder connecting in gland (4), the shoulder of the second swash plate (8) is pressed on the inner ring of the 3rd rolling bearing (9), transmission shaft (7) and the first swash plate (10), the second swash plate (8) is fixedly connected with, by key, connect and realize circumferentially location, between transmission shaft (7) and cylinder body (3), can relatively rotate, the 4th rolling bearing (6) is bearing in transmission shaft (7) in the second pump end cap (5), one side stage shoulder of transmission shaft (7) is pressed on the step hole of the first swash plate (10), the inner ring of the 4th rolling bearing (6) is pressed on the shoulder of transmission shaft (7) opposite side, step hole in the second pump end cap (5) is pressed on the outer ring of the 4th rolling bearing (6), realize the first swash plate (10), the axially locating of the second swash plate (8) and transmission shaft (7), the first swash plate (10) is relative with the inclined-plane true dip direction of the second swash plate (8),
On cylinder body (3), there is plural axial plunger hole (1), plunger hole (1) is evenly distributed on same circumference, the two ends of each plunger hole (1) are separately installed with a plunger (20), plunger (20) can move vertically in plunger hole (1), the head of each plunger (20) is provided with piston shoes (19), between piston shoes (19) and plunger (20), pass through bulb hinged, between every pair of plunger (20) in same plunger hole (1), be connected with a spring (22), spring (22) is pressed in the plunger of both sides (20) and piston shoes (19) respectively on the first swash plate (10) and the second swash plate (8), can relative sliding between the inclined-plane of piston shoes (19) bottom surface and the first swash plate (10) or the second swash plate (8),
On cylinder body (3), be also evenly distributed with plural plunger cavity oil through (21), its position is corresponding with plunger hole (1), and each plunger cavity oil through (21) is initial by the end face of the same side, is communicated to the middle part of plunger hole (1);
The first swash plate (10) is provided with boss towards a side of cylinder body (3), and it and cylinder body (3) end face are adjacent to, and can relative sliding, on raised head face on the first swash plate (10), have symmetrically oil-feed waist shaped hole (24) and fuel-displaced waist shaped hole (23), they are communicated with the plunger cavity oil through (21) within the scope of corresponding angle respectively, mutually isolated between oil-feed waist shaped hole (24) and fuel-displaced waist shaped hole (23), opposite side in the first swash plate (10), have abreast oil-feed remittance oil ring groove (12) and fuel-displaced remittance oil ring groove (14), oil-feed remittance oil ring groove (12) is communicated with oil-feed waist shaped hole (24), fuel-displaced remittance oil ring groove (14) is communicated with fuel-displaced waist shaped hole (23), on the first pump end cap (13), have filler opening (18) and oil outlet (17), filler opening (18), oil outlet (17) converges oil ring groove (12) with oil-feed respectively, fuel-displaced remittance oil ring groove (14) is communicated with.
2. the static two inclined plate axial piston pump of a kind of cylinder body according to claim 1, is characterized in that: the isolated width of oil-feed waist shaped hole (24) and fuel-displaced waist shaped hole (23) is not less than the diameter of plunger cavity oil through (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150519.8A CN103925182B (en) | 2014-04-15 | 2014-04-15 | The two inclined plate axial piston pump that a kind of cylinder body is static |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150519.8A CN103925182B (en) | 2014-04-15 | 2014-04-15 | The two inclined plate axial piston pump that a kind of cylinder body is static |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103925182A true CN103925182A (en) | 2014-07-16 |
| CN103925182B CN103925182B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410150519.8A Expired - Fee Related CN103925182B (en) | 2014-04-15 | 2014-04-15 | The two inclined plate axial piston pump that a kind of cylinder body is static |
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| Country | Link |
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| CN (1) | CN103925182B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484996A (en) * | 2016-01-12 | 2016-04-13 | 薛伟松 | Plunger pump with radial oil distribution structure and oil distribution method of plunger pump |
| CN107605598A (en) * | 2017-10-24 | 2018-01-19 | 青岛大学 | A kind of swash plate body mechanical-hydraulic binary power engine |
| CN114412742A (en) * | 2021-10-28 | 2022-04-29 | 中国航发西安动力控制科技有限公司 | Double-output axial plunger pump |
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| GB740125A (en) * | 1953-06-29 | 1955-11-09 | New York Air Brake Co | Reciprocating pumps |
| US4041843A (en) * | 1976-03-15 | 1977-08-16 | Vladimir Petrovich Mischenko | Axial-piston variable-delivery pump with valve directional control of pressure fluid |
| CN2103025U (en) * | 1991-09-29 | 1992-04-29 | 周其宁 | Two inclined plate large flow plunger-type fuel pump |
| CN2228988Y (en) * | 1995-08-31 | 1996-06-12 | 徐绳武 | Improved inclined plate type axial plunger pump |
| CN101270739A (en) * | 2008-05-13 | 2008-09-24 | 河北德邦科技开发有限公司 | Axial plunger type hydraulic motor or pump |
| CN101573533A (en) * | 2007-01-05 | 2009-11-04 | 罗伯特·博世有限公司 | Hydraulic piston engine |
-
2014
- 2014-04-15 CN CN201410150519.8A patent/CN103925182B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB740125A (en) * | 1953-06-29 | 1955-11-09 | New York Air Brake Co | Reciprocating pumps |
| US4041843A (en) * | 1976-03-15 | 1977-08-16 | Vladimir Petrovich Mischenko | Axial-piston variable-delivery pump with valve directional control of pressure fluid |
| CN2103025U (en) * | 1991-09-29 | 1992-04-29 | 周其宁 | Two inclined plate large flow plunger-type fuel pump |
| CN2228988Y (en) * | 1995-08-31 | 1996-06-12 | 徐绳武 | Improved inclined plate type axial plunger pump |
| CN101573533A (en) * | 2007-01-05 | 2009-11-04 | 罗伯特·博世有限公司 | Hydraulic piston engine |
| CN101270739A (en) * | 2008-05-13 | 2008-09-24 | 河北德邦科技开发有限公司 | Axial plunger type hydraulic motor or pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484996A (en) * | 2016-01-12 | 2016-04-13 | 薛伟松 | Plunger pump with radial oil distribution structure and oil distribution method of plunger pump |
| CN107605598A (en) * | 2017-10-24 | 2018-01-19 | 青岛大学 | A kind of swash plate body mechanical-hydraulic binary power engine |
| CN107605598B (en) * | 2017-10-24 | 2023-08-04 | 青岛大学 | Mechanical-hydraulic double-element power engine of swash plate mechanism |
| CN114412742A (en) * | 2021-10-28 | 2022-04-29 | 中国航发西安动力控制科技有限公司 | Double-output axial plunger pump |
| CN114412742B (en) * | 2021-10-28 | 2023-09-22 | 中国航发西安动力控制科技有限公司 | Double-output axial plunger pump |
Also Published As
| Publication number | Publication date |
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| CN103925182B (en) | 2016-02-24 |
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Granted publication date: 20160224 Termination date: 20190415 |