CN204212962U - A kind of there is self-alignment function join oily auxiliary structure - Google Patents

A kind of there is self-alignment function join oily auxiliary structure Download PDF

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Publication number
CN204212962U
CN204212962U CN201420563019.2U CN201420563019U CN204212962U CN 204212962 U CN204212962 U CN 204212962U CN 201420563019 U CN201420563019 U CN 201420563019U CN 204212962 U CN204212962 U CN 204212962U
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China
Prior art keywords
plunger
cylinder
self
pump
oil distribution
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CN201420563019.2U
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Chinese (zh)
Inventor
徐建江
周青花
曹改荣
高魏磊
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SAIKESI HYDRAULIC TECHNOLOGY CO., LTD.
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NINGBO WIDE SKY SKS HYDRAULIC CO Ltd
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Abstract

The utility model discloses a kind of there is self-alignment function join oily auxiliary structure, the plunger piston slippery boots assembly comprising oil distribution casing, cylinder body and be made up of plunger and piston shoes, formed between oil distribution casing and cylinder body and join pasta, the surface spherically structure of oil distribution casing, the bottom of cylinder body is in the spherical groove suitable with described spheric structure; The tapered structural distribution of plunger hole on cylinder body, the front-end radius of this cone structure is greater than back-end radius.Its advantage is: what adopt spheric structure joins pasta, can eliminate the effect of cylinder body upsetting couple square, make cylinder body have self contering function and have good self-alignment, and the efficiency that effectively prevent plunger pump reduces and sharp wear; And plunger hole adopts conical distribution, the high-speed motion of plunger pump can be ensure that, help the Theoretical flowing capacity improving pump, be conducive to the high rotating speed that ensure that large discharge pump.

Description

A kind of there is self-alignment function join oily auxiliary structure
Technical field
The utility model relates to the manufacturing technology field of plunger pump, especially a kind of there is self-alignment function join oily auxiliary structure.
Background technique
Plunger pump belongs to positive displacement pump, reciprocating pump.Plunger pump causes the change of sealed volume in plunger cylinder and the pressure difference produced and make flowing medium carry out work by plunger is reciprocating in plunger cylinder.The working stroke changing plunger just can control the size of plunger pump flow.
Axial piston pump is as the wherein one in plunger pump, and the balanced design of hydraulic plunger pump cylinder body and oil distribution casing is one of most important link in axial piston pump design.As shown in Figure 4, at present, most cylinder body 2, oil distribution casing 1 are planar oil distributing structure, and the plunger hole 2a of cylinder body is parallel to cylinder body central axis, and the structural manufacturing process of this cylinder body is simple, is easy to processing; But, even if the balanced design between the cylinder body of planar oil distributing structure and oil distribution casing is good, in pump operation process, cylinder body impacting force and oil distribution casing hydraulic support force also cannot be accomplished to overlap all the time, both are not once overlap, will produce the moment that cylinder body is toppled, this will inevitably cause the efficiency of pump to reduce and sharp wear, and therefore its structure is further improved.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, provides structure simple, can ensure cylinder body impacting force and the good repeatability of oil distribution casing hydraulic support force a kind of there is self-alignment function join oily auxiliary structure.
The utility model solves the problems of the technologies described above adopted technological scheme:
A kind of there is self-alignment function join oily auxiliary structure, the plunger piston slippery boots assembly comprising oil distribution casing, cylinder body and be made up of plunger and piston shoes, formed between oil distribution casing and cylinder body and join pasta, wherein, the surface spherically structure of oil distribution casing, the bottom of cylinder body is in the spherical groove suitable with described spheric structure; The tapered structural distribution of plunger hole on cylinder body, the front-end radius of this cone structure is greater than back-end radius.
The technical measures optimized also comprise:
The angle α of the axis of above-mentioned plunger hole and the axis of described cylinder body is 5 ° to 10 °.
Above-mentioned plunger is placed in corresponding plunger hole, and the column cap of plunger matches with the piston shoes be installed on swash plate, and the front portion of plunger hole is provided with lining.
The length of above-mentioned lining is 2/3rds of the described plunger hole degree of depth.
Above-mentioned swash plate matches with the mounting head being installed on cylinder body front end, the outer surface spherically structure of mounting head.
Spring and packing ring is provided with between above-mentioned mounting head and the front-end face of cylinder body.
Of the present utility model a kind of there is self-alignment function join oily auxiliary structure, joining pasta between cylinder body and oil distribution casing is spheric structure, total supporting force of oil distribution casing must through spheric curvature center, the equalising torque of cylinder body can be maintained well, thus eliminate the effect of cylinder body upsetting couple square, make cylinder body have self contering function and have good self-alignment.And good self-alignment performance enough guarantee cylinder body at a high speed, operate under high pressure time, auto-compensation material Light deformation and the microsize change of being out of shape and causing of expanding with heat and contract with cold, thus the running enabling plunger pump stable, the efficiency that effectively prevent plunger pump reduces and sharp wear.
And the plunger hole on cylinder body adopts conical distribution, such structural design is adopted to have the following advantages:
First: run up in process, the centrifugal force of plunger self is contrary with plunger inertial force along the component of plunger axis, thus reduces the breakaway force of plunger and piston shoes, ensure that the high-speed motion of plunger pump.
Second: plunger inclination angle increases, then, in plunger pump movement process, plunger displacement becomes linear to be increased, and also strain is large mutually for speed, so structure contributes to the Theoretical flowing capacity improving pump.
3rd: the self-priming performance of plunger pump depends primarily on pump shaft angular velocity of rotation and dispensing window diameter, and this structure can reduce the diameter of dispensing window, thus the self-priming performance strengthening pump, then ensure that the high rotating speed of large discharge pump.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is I portion enlarged view in Fig. 1;
Fig. 3 is cylinder body and the combined sectional structure schematic diagram of oil distribution casing in Fig. 1;
Fig. 4 existingly joins the combined sectional structure schematic diagram of oil distribution casing in oily auxiliary structure.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Be structural representation of the present utility model as shown in Figures 1 to 4,
Reference character is wherein: join pasta L, angle α, oil distribution casing 1, cylinder body 2, plunger hole 2a, plunger 3, column cap 31, piston shoes 4, swash plate 5, lining 6, mounting head 7, spring 81, packing ring 82.
As shown in Figures 1 to 4,
Of the present utility model a kind of there is self-alignment function join oily auxiliary structure, the plunger piston slippery boots assembly comprising oil distribution casing 1, cylinder body 2 and be made up of plunger 3 and piston shoes 4, formed between oil distribution casing 1 and cylinder body 2 and join pasta L, wherein, the surface spherically structure of oil distribution casing 1, the bottom of cylinder body 2 is in the spherical groove suitable with described spheric structure; The tapered structural distribution of plunger hole 2a on cylinder body 2, the front-end radius of this cone structure is greater than back-end radius.
In embodiment, the angle α of the axis of plunger hole 2a and the axis of described cylinder body 2 is 5 ° to 10 °.Auxiliary point line drawn in Fig. 3 and the axis being parallel of cylinder body 2, in Fig. 3, namely institute target angle α can be considered the angle α of the axis of plunger hole 2a and the axis of cylinder body 2.
In embodiment, plunger 3 is placed in corresponding plunger hole 2a, and the column cap 31 of plunger 3 matches with the piston shoes 4 be installed on swash plate 5, and the front portion of plunger hole 2a is provided with lining 6.
In embodiment, the length of lining 6 is 2/3rds of the described plunger hole 2a degree of depth.
The setting of lining 6 adds the wear resistance of plunger hole 2a inwall, thus effectively can improve working life, reduces maintenance frequency.
In embodiment, swash plate 5 matches with the mounting head 7 being installed on cylinder body 2 front end, the outer surface spherically structure of mounting head 7.Adopt mating spherical surfaces between swash plate 5 and mounting head 7, the motion of swash plate 5 can be made more flexible, be conducive to the rotating speed improving plunger pump.
In embodiment, between the front-end face of mounting head 7 and cylinder body 2, be provided with spring 81 and packing ring 82.Spring 81 is set and packing ring 82 can play relaxation effect, ensures the stability that mounting head 7 is connected with cylinder body 2 and reliability.
Of the present utility modelly join oily auxiliary structure, joining pasta L between its cylinder body 2 and oil distribution casing 1 is spheric structure, in the operation process of plunger pump, total supporting force of oil distribution casing 1 must through the centre of curvature of sphere, the axial component of this supporting force and radial component constitute upsetting couple square and the restoring couple square of cylinder body 1 respectively, spheric structure join the equalising torque that pasta L can maintain cylinder body 2 well, thus eliminate the effect of cylinder body 2 upsetting couple square, make cylinder body 2 have self contering function and have good self-alignment.
When good self-alignment performance enough guarantees that cylinder body 2 operates under high speed, high pressure, auto-compensation material Light deformation and the microsize change of being out of shape and causing of expanding with heat and contract with cold, thus the running enabling plunger pump stable, effectively avoid upsetting couple square to cause the efficiency of plunger pump to reduce and sharp worn harm.
Plunger hole 2a on cylinder body 2 adopts conical distribution, and the front-end radius of this cone structure is greater than back-end radius, and the column cap 31 being placed in the plunger 3 in each plunger hole 2a matches with the piston shoes 4 be installed on swash plate 5, and swash plate 5 and mounting head 7 mating spherical surfaces.When plunger 3 is reciprocating in plunger hole 2a, swash plate 5 and mounting head 7 routing motion.
Such structural design is adopted to have the following advantages:
First: run up in process, the centrifugal force of plunger 3 self is contrary with plunger inertial force along the component of plunger 3 axis, thus reduces plunger 3 and the breakaway force of piston shoes 4, ensure that the high-speed motion of plunger pump.
Second: plunger inclination angle increases, then, in plunger pump movement process, plunger displacement becomes linear to be increased, and also strain is large mutually for speed, so structure contributes to the Theoretical flowing capacity improving pump.
3rd: the self-priming performance of plunger pump depends primarily on pump shaft angular velocity of rotation and dispensing window diameter, and this structure can reduce the diameter of dispensing window, thus the self-priming performance strengthening pump, then ensure that the high rotating speed of large discharge pump.
Most preferred embodiment of the present utility model is illustrated, and the various change made by those of ordinary skill in the art or remodeling all can not depart from scope of the present utility model.

Claims (6)

1. one kind there is self-alignment function join oily auxiliary structure, the plunger piston slippery boots assembly comprising oil distribution casing (1), cylinder body (2) and be made up of plunger (3) and piston shoes (4), formed between described oil distribution casing (1) and cylinder body (2) and join pasta (L), it is characterized in that: the surface spherically structure of described oil distribution casing (1), the bottom of described cylinder body (2) is in the spherical groove suitable with described spheric structure; Plunger hole (2a) tapered structural distribution on described cylinder body (2), the front-end radius of this cone structure is greater than back-end radius.
2. according to claim 1 a kind of there is self-alignment function join oily auxiliary structure, it is characterized in that: the angle (α) of the axis of described plunger hole (2a) and the axis of described cylinder body (2) is 5 ° to 10 °.
3. according to claim 2 a kind of there is self-alignment function join oily auxiliary structure, it is characterized in that: described plunger (3) is placed in corresponding plunger hole (2a), the column cap (31) of described plunger (3) matches with the piston shoes (4) be installed on swash plate (5), and the front portion of described plunger hole (2a) is provided with lining (6).
4. according to claim 3 a kind of there is self-alignment function join oily auxiliary structure, it is characterized in that: the length of described lining (6) is 2/3rds of described plunger hole (2a) degree of depth.
5. according to claim 4 a kind of there is self-alignment function join oily auxiliary structure, it is characterized in that: described swash plate (5) matches with the mounting head (7) being installed on cylinder body (2) front end, the outer surface spherically structure of described mounting head (7).
6. according to claim 5 a kind of there is self-alignment function join oily auxiliary structure, it is characterized in that: between described mounting head (7) and the front-end face of cylinder body (2), be provided with spring (81) and packing ring (82).
CN201420563019.2U 2014-09-28 2014-09-28 A kind of there is self-alignment function join oily auxiliary structure Active CN204212962U (en)

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Application Number Priority Date Filing Date Title
CN201420563019.2U CN204212962U (en) 2014-09-28 2014-09-28 A kind of there is self-alignment function join oily auxiliary structure

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107035681A (en) * 2017-06-22 2017-08-11 杭州力龙液压有限公司 Plunger, plunger pump and hydraulic means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107035681A (en) * 2017-06-22 2017-08-11 杭州力龙液压有限公司 Plunger, plunger pump and hydraulic means

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C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: Jiangbei District, Zhejiang city of Ningbo Province China 315021 Street No. 195

Patentee after: SAIKESI HYDRAULIC TECHNOLOGY CO., LTD.

Address before: Jiangbei District, Zhejiang city of Ningbo Province China 315021 Street No. 195

Patentee before: Ningbo Wide Sky SKS Hydraulic Co., Ltd.

C56 Change in the name or address of the patentee