CN202108722U - Swash plate axial plunger pump with ball device arranged between swash plate and sliding track - Google Patents

Swash plate axial plunger pump with ball device arranged between swash plate and sliding track Download PDF

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Publication number
CN202108722U
CN202108722U CN2011201996223U CN201120199622U CN202108722U CN 202108722 U CN202108722 U CN 202108722U CN 2011201996223 U CN2011201996223 U CN 2011201996223U CN 201120199622 U CN201120199622 U CN 201120199622U CN 202108722 U CN202108722 U CN 202108722U
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CN
China
Prior art keywords
swash plate
ball
plunger pump
axial plunger
sliding track
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011201996223U
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Chinese (zh)
Inventor
宣伯民
Original Assignee
宣伯民
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Filing date
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Priority to CN2011201996223U priority Critical patent/CN202108722U/en
Application granted granted Critical
Publication of CN202108722U publication Critical patent/CN202108722U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a swash plate axial plunger pump with a ball device arranged between a swash plate and a sliding track, which belongs to the technical field of a swash plate axial plunger pump transmission and aims at overcoming defects that a sliding track of the existing swash plate axial plunger pump is subject to big friction when sliding on the surface of the swash plate. The swash plate axial plunger pump comprises the swash plate, the sliding track, a return stroke plate, a plunger, a transmission shaft and a cylinder body. A ball plate is arranged between the swash plate and the sliding track, one side of the ball plate facing the sliding track is a plane, the other side of the ball plate facing the swash plate is provided with a circle of ball grooves, and at least three balls are arranged evenly in the ball groove. The swash plate axial plunger pump is applicable to update of products for swash plate axial plunger pump manufacture factories.

Description

Establish the cam-type axial piston pump of roller unit between swash plate and crawler shoe
Technical field
The utility model relates to a kind of drive technology of cam-type axial piston pump, particularly relates to the cam-type axial piston pump of establishing roller unit between a kind of swash plate and crawler shoe.
Background technique
Providing to hydraulic system in the oil hydraulic pump of power; Because cam-type axial piston pump has: the part that hydraulic pressure is pressurizeed is columniform plunger and cylinder hole; Can process more easily; And can reach higher quality of fit and good sealing property, still have higher volumetric efficiency when under high pressure conditions, working; When needs changed the flow operation, the working stroke that only need change plunger simply just can achieve the goal; Main parts size all is under the operating mode of compression chord, to work; The intensity of material can be fully used; Therefore can make advantages such as radial dimension miniaturization, compact overall structure, the motional inertia of the pump housing is little, so needing oil hydraulic pump that bigger power and flow are arranged, hydraulic fluid had higher pressure, can be widely used in the hydraulic system of can regulate flow at any time as required.During cam-type axial piston pump work, be to drive the cylinder body rotation, and then make the also rotation synchronously of plunger that is assemblied in the cylinder hole by transmission shaft.Because under the effect of backhaul dish, make to be set in crawler shoe on the plunger external end head and to be close to the appearance plane of swash plate all the time and to be rotated slip, make plunger also reciprocating in the cylinder hole in cylinder body rotation synchronously, thereby realize the operating mode of imbibition and hydraulic fluid.Obviously; Here friction is a sliding friction between the appearance plane of crawler shoe and swash plate; Its surface friction drag is bigger; Make pump the pressure that converts the mechanical energy of prime mover input into hydraulic fluid can process in, have bigger part energy to be used to overcome the frictional force between crawler shoe and the swash plate, the efficient of pump is reduced, also aggravated simultaneously component wearing and tearing, shorten its working life.
Summary of the invention
The purpose of the utility model provides the cam-type axial piston pump of establishing roller unit between a kind of swash plate and crawler shoe, the crawler shoe that overcomes present cam-type axial piston pump suffered bigger deficiency of surface friction drag when swash surfaces is slided.
The utility model is achieved through following technical proposals.
The utility model comprises swash plate, crawler shoe, backhaul dish, plunger, transmission shaft, cylinder body; Between said swash plate and said crawler shoe, be provided with the ball dish; Said ball dish is the plane, is provided with a circle ball grooves towards the one side of said swash plate towards the one side of said crawler shoe, and at least three balls are housed in said ball grooves in uniform way.Because in the utility model; Owing between said crawler shoe and said swash plate, increased said ball dish and ball; Make the motion between said crawler shoe and the said swash plate become rolling by slip, suffered surface friction drag reduces greatly, also makes the wearing and tearing of related components be able to alleviate simultaneously.
Synchronous, stressed even for said ball is rolled when working, on the said ball retainer is housed.For the plane of protecting said swash plate is not worn, be provided with hypostase between said swash plate and the said ball, said hypostase is provided with a circle ball grooves towards the one side of said ball, is the plane and fixes with screw and said swash plate towards the one side of said swash plate.Like this, when the rolling member that is made up of said ball dish, ball, hypostase need be changed, can be more convenient, realize under the situation that cost is lower in operation.
Against existing technologies, the beneficial effect of the utility model is:
The kinetic energy that can let transmission shaft carry changes the compression ability of plunger into more most ofly, thereby improves the efficient of pump.
Description of drawings
Fig. 1 is the structural representation of the utility model, and Fig. 2 is the A-A cut-away view of Fig. 1.Among the figure: 1, swash plate, 2, crawler shoe, 3, the backhaul dish, 4, plunger, 5, transmission shaft, 6, cylinder body, 7, the ball dish, 8, ball, 9, ball grooves, 10, retainer, 11, hypostase.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
According to diagram; When transmission shaft 5 drove cylinder body 6 rotations, plunger 4 also rotated with cylinder body synchronously, because the effect of swash plate 1 and backhaul dish 3; Vertical surface with the center line through transmission shaft 5 is the boundary, makes insert plunger 4 on the left side and the right on cylinder body 6 do to-and-fro motion in the opposite direction respectively.In this process, crawler shoe 2 will bear very big pressure stress towards the one side of swash plate 1, and especially when plunger 4 was made the hydraulic fluid stroke, this pressure stress was greater than the pressure of plunger to hydraulic fluid.In present technology, crawler shoe 2 will slide on the surface of swash plate 1 under so big pressure stress, must overcome bigger force of sliding friction, and overcome friction institute work is unprofitable to improve the efficient of pump.In the utility model, all crawler shoes 2 all are to be pressed on the ball dish 7, rotate together, and then owing to the effect of ball 8, hypostase 11, suffered is force of rolling friction to ball dish 7.Clearly, 7 on ball dish, 2 force of sliding friction sums that will overcome of former each crawler shoe of rolling friction force rate that will overcome want much little.Like this, the kinetic energy that just can let transmission shaft carry changes the compression ability of plunger into more most ofly, thereby improves the efficient of pump.

Claims (3)

1. establish the cam-type axial piston pump of roller unit between swash plate and crawler shoe; Comprise swash plate, crawler shoe, backhaul dish, plunger, transmission shaft, cylinder body; It is characterized in that; Between said swash plate and said crawler shoe, be provided with the ball dish, said ball dish is the plane, is provided with a circle ball grooves towards the one side of said swash plate towards the one side of said crawler shoe, and at least three balls are housed in said ball grooves in uniform way.
2. establish the cam-type axial piston pump of roller unit between a kind of swash plate according to claim 1 and crawler shoe, it is characterized in that, on the said ball retainer is housed.
3. establish the cam-type axial piston pump of roller unit between a kind of swash plate according to claim 1 and crawler shoe; It is characterized in that; Be provided with hypostase between said swash plate and the said ball; Said hypostase is provided with a circle ball grooves towards the one side of said ball, is the plane and fixes with screw and said swash plate towards the one side of said swash plate.
CN2011201996223U 2011-06-13 2011-06-13 Swash plate axial plunger pump with ball device arranged between swash plate and sliding track Expired - Fee Related CN202108722U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201996223U CN202108722U (en) 2011-06-13 2011-06-13 Swash plate axial plunger pump with ball device arranged between swash plate and sliding track

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201996223U CN202108722U (en) 2011-06-13 2011-06-13 Swash plate axial plunger pump with ball device arranged between swash plate and sliding track

Publications (1)

Publication Number Publication Date
CN202108722U true CN202108722U (en) 2012-01-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201996223U Expired - Fee Related CN202108722U (en) 2011-06-13 2011-06-13 Swash plate axial plunger pump with ball device arranged between swash plate and sliding track

Country Status (1)

Country Link
CN (1) CN202108722U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192140A (en) * 2011-06-13 2011-09-21 宣伯民 Swash-plate type axial plunger pump with ball bearing device between swash plate and skid-plate
CN108131266A (en) * 2018-02-01 2018-06-08 李涌权 Fluid pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192140A (en) * 2011-06-13 2011-09-21 宣伯民 Swash-plate type axial plunger pump with ball bearing device between swash plate and skid-plate
CN108131266A (en) * 2018-02-01 2018-06-08 李涌权 Fluid pump

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120111

Termination date: 20120613

C17 Cessation of patent right