CN103925182B - The two inclined plate axial piston pump that a kind of cylinder body is static - Google Patents
The two inclined plate axial piston pump that a kind of cylinder body is static Download PDFInfo
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- CN103925182B CN103925182B CN201410150519.8A CN201410150519A CN103925182B CN 103925182 B CN103925182 B CN 103925182B CN 201410150519 A CN201410150519 A CN 201410150519A CN 103925182 B CN103925182 B CN 103925182B
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- swash plate
- plunger
- oil
- cylinder body
- pump
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Abstract
The two inclined plate axial piston pump that a kind of cylinder body is static, cylinder body both sides are configured with two swash plates, the motion of swash plate is inputted by transmission shaft, and connect transmission by key, cylinder body is provided with plural plunger, plunger motion is driven jointly by two swash plates and spring, and be all face contact between main stressed part, stress is good, stable drive; Cylinder body is fixed, and not with drive axis, thus reduces the rotary inertia of pump, is beneficial to the occasion being used in and needing the numerous speed governing of pumping frequency, does not produce centrifugal force, can work when higher rotation speed; Two inclined plate design substantially increases pump delivery; Can not cause vibration and wearing and tearing, the present invention has compact structure, the simple advantage of transmission simultaneously.
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 the volume type oil hydraulic pump that a class plunger is parallel to transmission shaft and arranges, has that structure is simple, volume is little, noise is low, efficiency is high, have the advantages such as suction capacity, is widely used in the hydraulic system in the field 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, pump housing internal fixtion is provided with a swash plate, when plunger in cylinder body rotates with cylinder body, under the driving of swash plate, to-and-fro motion in plunger cavity, thus 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, start and stop and the speed governing speed of response of pump are slower, be unfavorable for the output flow directly regulating pump by controlling rotating speed, because fluid is with cylinder body high speed rotating, fluid is inner easily produces cavitation erosion and temperature rise, thus is unfavorable for the volumetric efficiency and the capacity usage ratio that improve pump, and the axial force imbalance suffered by the swash plate in the pump housing, 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, have 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, connected by key and realize circumference 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, second pump end cap 5 is arranged on the end face of connection gland 4, first pump end cap 13 is arranged on the opposite side end face of pump case 2, 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 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 side, its outer ring is compressed by the axle head gland 16 be arranged on the first pump end cap 13, second swash plate 8 is arranged on pump case 2 opposite side, being bearing in by the 3rd rolling bearing 9 connects in gland 4, the outer ring of the 3rd rolling bearing 9 is pressed on the shoulder in connection 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, second swash plate 8 is fixedly connected with, connected by key and realize circumference location, can relatively rotate between transmission shaft 7 and cylinder body 3, transmission shaft 7 is bearing in the second pump end cap 5 by the 4th rolling bearing 6, the side 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 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, first swash plate 10 is relative with the inclined-plane true dip direction of the second swash plate 8,
Cylinder body 3 there is plural axial plunger hole 1, plunger hole 1 is evenly distributed on circumferentially same, 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, bulb hinged is passed through between piston shoes 19 and plunger 20, a spring 22 is connected with between often pair of plunger 20 in same plunger hole 1, the plunger 20 of both sides and piston shoes 19 are pressed on the first swash plate 10 and the second swash plate 8 by spring 22 respectively, 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,
Cylinder body 3 is 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;
First swash plate 10 is provided with boss towards the side of cylinder body 3, and it and cylinder body 3 end face are adjacent to, and can relative sliding, raised head face on the first swash plate 10 has 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 completely cut off between oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23, at the opposite side of the first swash plate 10, have oil-feed remittance oil ring groove 12 and fuel-displaced remittance oil ring groove 14 abreast, 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, first pump end cap 13 has filler opening 18 and oil outlet 17, filler opening 18, oil outlet 17 converges oil ring groove 12 respectively with oil-feed, 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 are configured with two swash plates: the first swash plate 10 and the second swash plate 8, and cylinder body 3 is provided with plural plunger 20, first swash plate 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 by key and transmit, and plunger 20 moves and jointly to be driven by the first swash plate 10, second swash plate 8 and spring 22, and be all that face contacts between main stressed part, stress is good, stable drive.
2) rotary inertia is little, is active in one's movements, and can realize high rotating speed.Elastic force drive plunger 20 to-and-fro motion of the thrust that the rotation that this pump passes through the first swash plate 10 and the second swash plate 8 produces and spring 22, cylinder body 3 is fixed, and does not rotate, thus reduces the rotary inertia of pump, be beneficial to the occasion being used in and needing the numerous speed governing of pumping frequency with transmission shaft 7; Because plunger 20 does not rotate, do not produce centrifugal force, therefore, between piston shoes 19 and swash plate inclined-plane, good laminating can be realized, can work when higher rotation speed.
3) discharge capacity is large, and axial force is little.This pump is two inclined plate design, comparatively monocline dish axial piston pump, and plunger 20 doubles, therefore substantially increases pump delivery; Meanwhile, axial force when plunger 20 can also extrude and eject by two inclined plate design is offset, and prevents unbalanced responsive to axial force 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, connected by key and realize circumference location, connect gland 4 to be arranged on by screw 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, second pump end cap 5 is arranged on the end face of connection gland 4 by screw, first pump end cap 13 is arranged on the opposite side end face of pump case 2, 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 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 is compressed by the axle head gland 16 be arranged on the first pump end cap 13, second swash plate 8 is arranged on pump case 2 opposite side, being bearing in by the 3rd rolling bearing 9 connects in gland 4, the outer ring of the 3rd rolling bearing 9 is pressed on the shoulder in connection 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, connected by key and realize circumference location, can relatively rotate between transmission shaft 7 and cylinder body 3, transmission shaft 7 is bearing in the second pump end cap 5 by the 4th rolling bearing 6, the side 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 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, ensure that the first swash plate 10 and the second swash plate 8 can rotate under the drive of transmission shaft 7 simultaneously, first swash plate 10 is relative with the inclined-plane true dip direction of the second swash plate 8.
With reference to Fig. 1, cylinder body 3 there is plural axial plunger hole 1, plunger hole 1 is evenly distributed on circumferentially same, 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, bulb hinged is passed through between piston shoes 19 and plunger 20, freely rotate in several angle and swing, a spring 22 is also connected with between often pair of plunger 20 in same plunger hole 1, the plunger 20 of both sides and piston shoes 19 are pressed on the first swash plate 10 and the second swash plate 8 by spring 22 respectively, 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.
See figures.1.and.2, cylinder body 3 is 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.
With reference to Fig. 1, Fig. 2 and Fig. 4, first swash plate 10 is provided with boss towards the side of cylinder body 3, and it and cylinder body 3 end face are adjacent to, and can relative sliding, raised head face on the first swash plate 10 has 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 completely cut off 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, at the opposite side of the first swash plate 10, have oil-feed remittance oil ring groove 12 and fuel-displaced remittance oil ring groove 14 abreast, 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, first pump end cap 13 has filler opening 18 and oil outlet 17, they converge oil ring groove 12 respectively with oil-feed, 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, two plungers 20 in same plunger hole 1 are made synchronously to be 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 set to the counter clockwise direction at Fig. 2 visual angle, then in FIG, the plunger 20 of the outside side of vertical paper, all be in the state that will be ejected, paper plunger 20 is inwards in bulged-in state, the half-turn plunger hole 1 being in ejection state is communicated with oil-feed waist shaped hole 24 by plunger cavity oil through 21, and then converge oil ring groove 12 with oil-feed and be communicated with, fluid is sucked from the oil circuit of outside by filler opening 18, the half-turn plunger hole 1 being in press-in state is communicated with fuel-displaced waist shaped hole 23 by plunger cavity oil through 21, and then be communicated with fuel-displaced remittance oil ring groove 14, by oil outlet 17, fluid is discharged to the 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 dynamically converts between press-in and ejection state, oil-feed waist shaped hole 24 and fuel-displaced waist shaped hole 23 rotate with the first swash plate 10, can ensure that the plunger hole 1 being in oil suction state is communicated with oil-feed waist shaped hole 24 all the time, the plunger hole 1 being 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 work simultaneously, namely realize continuously sucking fluid from filler opening 18 and discharging from oil outlet 17.
Claims (2)
1. the two inclined plate axial piston pump that a cylinder body is static, comprise pump case (2), it is characterized in that: cylinder body (3) is fixedly mounted in pump case (2), between cylinder body (3) external cylindrical surface and pump case (2), key is installed, thus realize the circumference location of cylinder body (3), 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), second pump end cap (5) is arranged on the end face of connection gland (4), first pump end cap (13) is arranged on the opposite side end face of pump case (2), 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 is compressed by the axle head gland (16) be arranged on the first pump end cap (13), second swash plate (8) is arranged on pump case (2) opposite side, being bearing in by the 3rd rolling bearing (9) connects in gland (4), the outer ring of the 3rd rolling bearing (9) is pressed on the shoulder in connection 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), second swash plate (8) is fixedly connected with, connected by key and realize circumference location, can relatively rotate between transmission shaft (7) and cylinder body (3), transmission shaft (7) is bearing in the second pump end cap (5) by the 4th rolling bearing (6), the side 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 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), first swash plate (10) is relative with the inclined-plane true dip direction of the second swash plate (8),
Cylinder body (3) there is plural axial plunger hole (1), plunger hole (1) is evenly distributed on circumferentially same, 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 a piston shoes (19), bulb hinged is passed through between piston shoes (19) and plunger (20), a spring (22) is connected with between often pair of plunger (20) in same plunger hole (1), the plunger (20) of both sides and piston shoes (19) are pressed on the first swash plate (10) and the second swash plate (8) by spring (22) respectively, 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),
Cylinder body (3) is also evenly distributed with plural plunger cavity oil through (21), its position is corresponding with plunger hole (1), 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);
First swash plate (10) is provided with boss towards the side of cylinder body (3), and it and cylinder body (3) end face are adjacent to, and can relative sliding, raised head face on the first swash plate (10) has 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 completely cut off between oil-feed waist shaped hole (24) and fuel-displaced waist shaped hole (23), at the opposite side of the first swash plate (10), have oil-feed remittance oil ring groove (12) and fuel-displaced remittance oil ring groove (14) abreast, 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), first pump end cap (13) has filler opening (18) and oil outlet (17), filler opening (18), oil outlet (17) converges oil ring groove (12) respectively with oil-feed, fuel-displaced remittance oil ring groove (14) is communicated with.
2. the two inclined plate axial piston pump that a kind of cylinder body according to claim 1 is static, 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 CN103925182A (en) | 2014-07-16 |
| CN103925182B true 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) |
Families Citing this family (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 |
| CN107605598B (en) * | 2017-10-24 | 2023-08-04 | 青岛大学 | Mechanical-hydraulic double-element power engine of swash plate mechanism |
| 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 |
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 |
| 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 |
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| CN103925182A (en) | 2014-07-16 |
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Granted publication date: 20160224 Termination date: 20190415 |