CN102305201A - High-pressure pump with star wheel and axial plunger - Google Patents
High-pressure pump with star wheel and axial plunger Download PDFInfo
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- CN102305201A CN102305201A CN201110235662A CN201110235662A CN102305201A CN 102305201 A CN102305201 A CN 102305201A CN 201110235662 A CN201110235662 A CN 201110235662A CN 201110235662 A CN201110235662 A CN 201110235662A CN 102305201 A CN102305201 A CN 102305201A
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- cylinder body
- pressure pump
- main shaft
- transmission main
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Abstract
The invention relates to a high-pressure pump with a star wheel and axial plungers, and the high-pressure pump comprises a cylinder body, plungers, a transmission main shaft and a front cover. The high-pressure pump is characterized in that the transmission main shaft the back end of which is provided with an eccentric hole is provided; a joint bearing assembly is arranged in the eccentric hole; the outer spherical surface of the joint bearing assembly and the concave spherical surface in the eccentric hole of the transmission main shaft constitute a spherical surface connecting structure; a star wheel is circumferentially uniformly distributed with sphere-connecting rod seat holes which are connected to plungers arranged in the cylinder body plunger holes by virtue of sphere-connecting rods in one-to-one correspondence; the star wheel shaft is connected with the bearing inner hole of the joint bearing assembly in the eccentric hole of the transmission main shaft; and the hemispherical hole of a back butting seat at the back part of the star wheel is flexibly connected with the sphere at the front end of the mandrel of the back butting seat. By substituting the star wheel structure for the traditional swash plate and slipping shoe structure, the high-pressure pump disclosed by the invention has the advantages of small volume, light weight, easiness and convenience for maintenance and repair, high efficiency, no oil loss, energy conservation, environment friendliness.
Description
Technical field
The present invention relates to axial piston pump, especially a kind of its stroking mechanism adopts the axial plunger high-pressure service pump of star wheel structure.
Background technique
Axial piston pump is dynamical element and an executive component important in the hydraulic system, is used widely in Hydraulic Field such as engineering machinery.Traditional cam-type axial piston pump mainly is made up of thrust plate, cylinder body, bulb plunger, piston shoes, transmission shaft, swash plate, housing etc.; A plurality of plungers are equipped with in the even distribution of circumference vertically in the cylinder body; Plunger end has piston shoes; Under the working state; Cylinder body is with the rotation of transmission shaft; Piston shoes act on the swash plate; Make plunger do the variation that axially reciprocating produces enclosed volume along the cylinder body plunger hole; Dispensing window through thrust plate sucks liquid medium and the pressurization discharge, reaches the purpose of required fluid pressure.
The shortcoming that the cam-type axial piston pump of conventional construction exists: the one, because the gradient of swash plate can not be excessive, it has restricted the stroke of plunger, regulation range is little, influences the capacity of pump; The 2nd, the lubricated liquid oil that leans between the driving component piston shoes of flow distribution apparatus and swash plate is supplied with, and therefore can produce oil unavoidably and decrease; The 3rd, stroking mechanism constitutes friction pair by swash plate and piston shoes, is easy to generate wearing and tearing.
Summary of the invention
The objective of the invention is through architecture advances, to propose a kind of spider gear shaft to piston high-pressure pump for overcoming the shortcoming that prior art exists.
The object of the invention is realized through following technological scheme: spider gear shaft is to piston high-pressure pump; Comprise cylinder body, plunger, transmission main shaft, protecgulum composition; Plunger is contained in the plunger hole of cylinder body; Circumference evenly distributes vertically; The front end of cylinder body is equipped with protecgulum; Protecgulum is provided with filler opening and oil outlet, it is characterized in that:
A. rear end has the transmission main shaft of eccentric opening, in eccentric opening, is provided with the joint shaft bearing assembly, and the concave spherical surface in the outer spherical surface of joint shaft bearing assembly and the transmission main shaft eccentric opening constitutes the sphere linkage structure;
B. star-wheel; Be uniformly distributed with ball link seat hole on its circumference; Ball link seat hole connects one to one through ball link and the plunger of device in the cylinder body plunger hole; Spider gear shaft is connected with the brearing bore of transmission main shaft eccentric opening intrinsic articulation bearing unit; Footstock hemisphere hole, back is established in the central position at star-wheel rear portion, and back footstock hemisphere hole flexibly connects with the mandrel front end spheroid of back footstock.
Said back footstock is fastenedly connected through stay tube and bolt and cylinder body.
Be provided with closed hood between said back footstock and the cylinder body.
End periphery is provided with oil sucting valve and presses fuel tap before the said cylinder body.
Compared with prior art; The invention has the beneficial effects as follows: 1. adopt star wheel structure to replace traditional inclined disc type structure; Between star-wheel and the transmission main shaft, between star-wheel and the back footstock and star-wheel all adopt the sphere linkage structure with being connected of plunger; Expanded the stroke adjustment scope of plunger; Increase the capacity of pump effectively, improved working efficiency.2. changed traditional cam-type axial piston pump stroking mechanism and constituted the structural type of friction pair, cancelled traditional distributing device, reduced mechanical wear, do not had oil and decrease by piston shoes and swash plate.3. changed the prior art constructions pattern from overall structure, have overall volume little, in light weight, the maintenance easy, advantages such as efficient is high, energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the structural representation of one of embodiment of the invention;
Fig. 2 is the A-A partial sectional view of Fig. 1.
Label is represented respectively among the figure: 1-stay tube, 2-bolt, footstock behind the 3-, 4-star-wheel; Footstock hemisphere hole behind the 5-, 6-joint shaft bearing assembly, the fastening bung flange of 7-, 8-ball link seat hole; 9-open type ball watt, 10-ball link adjustment circle, 11-ball link, 12-closed hood; The 13-plunger, 14-cylinder body, 15-transmission main shaft, 16-protecgulum; The 17-filler opening, 18-oil-feed annular groove, 19-oil outlet; 20-goes out oil ring groove, the 21-oil sucting valve, and 22-presses fuel tap.
Embodiment
Fig. 1 is one embodiment of the present of invention, and spider gear shaft comprises that to piston high-pressure pump cylinder body 14, plunger 13, transmission main shaft 15, protecgulum 16 form, and a plurality of plunger holes of circumference uniform distribution vertically in the cylinder body 14, plunger 13 are contained in the plunger hole of cylinder body 14 reciprocating.Cylinder body 14 is established the stepped shape central shaft hole, installs the transmission main shaft 15 that a rear end has eccentric opening, establishes tapered roller bearing between transmission main shaft 15 and cylinder body 14 central shaft holes, establishes the interior cover of band concave spherical surface in the eccentric opening of transmission main shaft 15.In the eccentric opening of transmission main shaft 15, be provided with joint shaft bearing assembly 6; In the joint shaft bearing assembly 6 two tapered roller bearings; Concave spherical surface in the outer spherical surface of joint shaft bearing assembly 6 and transmission main shaft 15 eccentric openings constitutes the sphere linkage structure, and joint shaft bearing assembly 6 is fixed on the eccentric opening of transmission main shaft 15 through fastening bung flange 7.
A star-wheel 4 is uniformly distributed with ball link seat hole 8 on its circumference, ball link seat hole 8 connects one to one through ball link 11 and the plunger 13 of device in cylinder body 14 plunger holes, constitutes a plurality of star combinations with this.Ball link seat hole 8 liner hemisphere watt, the spheroid part of ball link 11 is fixing with ball link adjustment circle 10 by the open type ball watts 9 that is located in the ball link seat hole 8.4 brearing bores with transmission main shaft 15 eccentric opening intrinsic articulation bearing uniies 6 of star-wheel are connected; Footstock hemisphere hole, back 5 is established in the central position at star-wheel 4 rear portions; Back footstock hemisphere hole 5 liner hemisphere watt, back footstock hemisphere hole 5 flexibly connects with the mandrel front end spheroid of back footstock 3.Back footstock 3 is fastenedly connected through stay tube 1 and bolt 2 and cylinder body 14, between back footstock 3 and cylinder body 14, is provided with closed hood 12, with the space sealing of 14 of afterwards footstock 3 and cylinder bodies.
The back footstock hemisphere hole 5 and the protecgulum 16 of transmission main shaft 15, cylinder body 14, back footstock 3, star-wheel 4 are concentric setting.The fore device protecgulum 16 of cylinder body 13, and through the bolton connection, protecgulum 16 is provided with filler opening 17, oil outlet 19 and goes out oil ring groove 20.
Shown in Figure 2, end periphery is provided with corresponding supporting oil sucting valve with its plunger hole 21 and presses fuel tap 22 before cylinder body 14, and oil sucting valve 21 is connected with oil-feed annular groove 18, pressure fuel tap 22 with go out oil ring groove 20 and be connected.
Under the running state; When outer power connects transmission main shaft 15 rotations; Drive joint shaft bearing assembly 6 swings in transmission main shaft 15 eccentric openings; Under the effect of joint shaft bearing assembly 6; Star-wheel 4 does not rotate; And the axis of 4 of star-wheels is according to the throw of eccentric of transmission main shaft 15 eccentric openings, and the central point of later footstock 3 spheroids is that conical tip forms swinging track and is conical rotation.The ball link seat hole 8 central point lines of back footstock hemisphere hole 5 central points of star-wheel 4 and star-wheel 4 each star combinations are with the axis normal of 4 of star-wheels.Because the axis of 4 of star-wheels is done conical the rotation, each star combination of star-wheel 4 will be in an orderly manner after the mandrel spheroid of footstock 3 be that central point swings, ball link 11 pushes away, 13 to-and-fro motion of stay column plug, thereby realizes pump oil.
Because the oil circuit of this pump is fixed; The distributing device that does not have conventional construction; Each plunger hole oil suction of cylinder body 14 is to be drawn from oil-feed annular groove 18 by oil sucting valve 21; Each plunger hole presses oil then through pressing fuel tap 22 to be pressed into out in the oil ring groove 20 fuel-displaced; Thereby reach minimizing mechanical wear; Do not have oil and decrease, increase work efficiency effect in energy saving and environmental protection.
Claims (4)
1. a spider gear shaft comprises cylinder body, plunger, transmission main shaft, protecgulum composition to piston high-pressure pump, and plunger is contained in the plunger hole of cylinder body, and circumference evenly distributes vertically, and the front end of cylinder body is equipped with protecgulum, and protecgulum is provided with filler opening and oil outlet, it is characterized in that:
A. rear end has the transmission main shaft (15) of eccentric opening, in eccentric opening, is provided with joint shaft bearing assembly (6), and the concave spherical surface in the outer spherical surface of joint shaft bearing assembly (6) and transmission main shaft (15) eccentric opening constitutes the sphere linkage structure;
B. a star-wheel (4); Be uniformly distributed with ball link seat hole (8) on its circumference; Ball link seat hole (8) connects one to one through ball link (11) and the plunger (13) of device in cylinder body (14) plunger hole; Star-wheel (4) axle is connected with the brearing bore of transmission main shaft (15) eccentric opening intrinsic articulation bearing unit (6); Footstock hemisphere hole (5), back is established in the central position at star-wheel (4) rear portion, and back footstock hemisphere hole (5) flexibly connects with the mandrel front end spheroid of back footstock (3).
2. spider gear shaft according to claim 1 is characterized in that to piston high-pressure pump said back footstock (3) is fastenedly connected with cylinder body (14) through stay tube (1) and bolt (2).
3. spider gear shaft according to claim 1 and 2 is characterized in that being provided with closed hood (12) between said back footstock (3) and the cylinder body (14) to piston high-pressure pump.
4. spider gear shaft according to claim 1 is characterized in that to piston high-pressure pump the preceding end periphery of said cylinder body (14) is provided with oil sucting valve (21) and presses fuel tap (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110235662 CN102305201B (en) | 2011-08-17 | 2011-08-17 | High-pressure pump with star wheel and axial plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110235662 CN102305201B (en) | 2011-08-17 | 2011-08-17 | High-pressure pump with star wheel and axial plunger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102305201A true CN102305201A (en) | 2012-01-04 |
| CN102305201B CN102305201B (en) | 2013-06-05 |
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ID=45379098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110235662 Active CN102305201B (en) | 2011-08-17 | 2011-08-17 | High-pressure pump with star wheel and axial plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102305201B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828274A (en) * | 2019-04-10 | 2020-10-27 | 罗伯特·博世有限公司 | Hydrostatic axial piston machine with drive shaft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3800905A1 (en) * | 1988-01-14 | 1989-07-27 | Rexroth Mannesmann Gmbh | Pump, in particular axial-piston pump |
| JPH0642431A (en) * | 1992-07-27 | 1994-02-15 | Toyota Motor Corp | Swash plate type plunger pump |
| CN1267791A (en) * | 1999-03-18 | 2000-09-27 | 金钟大 | Rotary pump |
| CN101358585A (en) * | 2008-09-11 | 2009-02-04 | 谌小堰 | Oblique crankshaft Variable plunger pump |
| CN101415944A (en) * | 2006-03-14 | 2009-04-22 | 朱荣辉 | Axial plunger pump or motor |
-
2011
- 2011-08-17 CN CN 201110235662 patent/CN102305201B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3800905A1 (en) * | 1988-01-14 | 1989-07-27 | Rexroth Mannesmann Gmbh | Pump, in particular axial-piston pump |
| JPH0642431A (en) * | 1992-07-27 | 1994-02-15 | Toyota Motor Corp | Swash plate type plunger pump |
| CN1267791A (en) * | 1999-03-18 | 2000-09-27 | 金钟大 | Rotary pump |
| CN101415944A (en) * | 2006-03-14 | 2009-04-22 | 朱荣辉 | Axial plunger pump or motor |
| CN101358585A (en) * | 2008-09-11 | 2009-02-04 | 谌小堰 | Oblique crankshaft Variable plunger pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828274A (en) * | 2019-04-10 | 2020-10-27 | 罗伯特·博世有限公司 | Hydrostatic axial piston machine with drive shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102305201B (en) | 2013-06-05 |
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