CN102865221A - Hollow plunger - Google Patents
Hollow plunger Download PDFInfo
- Publication number
- CN102865221A CN102865221A CN2012103741001A CN201210374100A CN102865221A CN 102865221 A CN102865221 A CN 102865221A CN 2012103741001 A CN2012103741001 A CN 2012103741001A CN 201210374100 A CN201210374100 A CN 201210374100A CN 102865221 A CN102865221 A CN 102865221A
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- CN
- China
- Prior art keywords
- half mold
- front half
- hollow plunger
- back mold
- mold half
- Prior art date
- 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.)
- Pending
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Abstract
The invention relates to a hollow plunger which comprises a front half mold (1) and a rear half mold (3). The front end of the front half mold (1) is spherical, the rear end of the front half mold (1) is of a cylindrical structure, and a through hole A (6) is arranged along the axial direction of the front half mold (1); the front end of the rear half mold (3) is of a cylindrical structure, the rear end of the rear half mold (3) is of a frustum structure, a through hole B (7) is arranged along the axial direction of the rear half mold (3), the front half mold (1) is connected with the rear half mold (3) by weld joint (2), and the outer diameter of the front half mold (1) is identical to that of the rear half mold (3); and an annular groove A (4) is arranged in the front half mold (1), and an annular groove B (5) is arranged in the rear half mold (3). The hollow plunger has the advantages that the front half mold (1) and the rear half mold (3) are subjected to friction welding, the weld joints (2) are used as internal reinforcing ribs of the hollow plunger, accordingly, the strength of the hollow plunger is improved, the hollow plunger is light and energy-saving, and is high in volume efficiency, materials are saved, and the like.
Description
Technical field
The present invention relates to the plunger that a kind of plunger pump is used, particularly a kind of hollow plunger.
Background technique
Plunger cooperates with plunger bushing in oil pump, realize the even of oil pump oil spout with it, therefore plunger is an important process part in the plunger pump, traditional plunger all is solid construction, and weight is larger, and required driving force is corresponding increase also, and in the preparation process process, the employed material of plunger is many, thereby its cost of production is significantly increased, and the volumetric efficiency of solid plunger is lower than the volumetric efficiency of hollow plunger.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide that a kind of weight is little, volumetric efficiency is high, economical with materials and energy-conservation hollow plunger.
Purpose of the present invention is achieved through the following technical solutions: a kind of hollow plunger, and it comprises front half module and back mold half, and front half module front end is spherical, and the rear end of front half module is cylindrical structure, and front half module offers through hole A along axial direction; The back mold half front end is cylindrical structure, and the back mold half rear end is the frustum structure, and back mold half offers through hole B along axial direction, and front half module is connected by weld seam with back mold half, and front half module is identical with the back mold half external diameter.
Offer circular groove A in the cylindrical structure of described front half module.
Offer circular groove B in the cylindrical structure of described back mold half.
The present invention has the following advantages: front half module of the present invention and back mold half adopt extrusion modling to obtain hollow structure, greatly reduce its quality, the volumetric efficiency of plunger increases, reduce driving force, thereby reach energy-conservation effect, weld seam becomes the stiffening rib of hollow plunger simultaneously, has effectively improved the intensity of hollow plunger.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure, half module before the 1-, 2-weld seam, 3-back mold half, 4-circular groove A, 5-circular groove B, 6-through hole A, 7-through hole B.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, a kind of hollow plunger, it comprises front half module 1 and back mold half 3, and front half module 1 front end is spherical, and the rear end of front half module 1 is cylindrical structure, and front half module 1 offers through hole A6 along axial direction; Back mold half 3 front ends are cylindrical structure, and back mold half 3 rear ends are the frustum structure, and back mold half 3 offers through hole B7 along axial direction, and front half module 1 is connected by weld seam 2 with back mold half 3, and front half module 1 is identical with back mold half 3 external diameters; Offer circular groove A4 in the cylindrical structure of front half module 1; Offer circular groove B5 in the cylindrical structure of back mold half 3.
Front half module 1 and back mold half 3 respectively extrusion modlings obtain hollow structure, connect by weld seam 2, adopt friction welding to be welded.
Claims (3)
1. hollow plunger, it is characterized in that: it comprises front half module (1) and back mold half (3), and front half module (1) front end is spherical, and the rear end of front half module (1) is cylindrical structure, front half module (1) offers through hole A(6 along axial direction); Back mold half (3) front end is cylindrical structure, back mold half (3) rear end is the frustum structure, back mold half (3) offers through hole B(7 along axial direction), front half module (1) is connected by weld seam (2) with back mold half (3), and front half module (1) is identical with back mold half (3) external diameter.
2. a kind of hollow plunger according to claim 1 is characterized in that: offer circular groove A(4 in the cylindrical structure of described front half module (1)).
3. a kind of hollow plunger according to claim 1 is characterized in that: offer circular groove B(5 in the cylindrical structure of described back mold half (3)).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103741001A CN102865221A (en) | 2012-10-07 | 2012-10-07 | Hollow plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103741001A CN102865221A (en) | 2012-10-07 | 2012-10-07 | Hollow plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102865221A true CN102865221A (en) | 2013-01-09 |
Family
ID=47444290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103741001A Pending CN102865221A (en) | 2012-10-07 | 2012-10-07 | Hollow plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102865221A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339230A (en) * | 2017-07-05 | 2017-11-10 | 哈尔滨理工大学 | A kind of positive displacement plunger with wave surface |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2653867A1 (en) * | 1976-11-26 | 1978-06-01 | Linde Ag | Hollow piston for hydraulic axial piston unit - has integral ball head with mantle press fitted and soldered to cover with central column |
| US4191095A (en) * | 1976-11-26 | 1980-03-04 | Linde Ag | Hollow piston for hydrostatic machines |
| EP0808988A1 (en) * | 1996-05-20 | 1997-11-26 | Brueninghaus Hydromatik Gmbh | Hollow piston with a radially welded cover |
| DE19934217A1 (en) * | 1999-07-21 | 2001-02-01 | Brueninghaus Hydromatik Gmbh | Piston arrangement for a piston engine |
| US6662709B1 (en) * | 1999-07-21 | 2003-12-16 | Brueninghaus Hydromatik Gmbh | Hollow piston for a piston engine and method for producing a hollow piston |
| CN202789498U (en) * | 2012-10-07 | 2013-03-13 | 四川省宜宾普什驱动有限责任公司 | Hollow plunger |
-
2012
- 2012-10-07 CN CN2012103741001A patent/CN102865221A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2653867A1 (en) * | 1976-11-26 | 1978-06-01 | Linde Ag | Hollow piston for hydraulic axial piston unit - has integral ball head with mantle press fitted and soldered to cover with central column |
| US4191095A (en) * | 1976-11-26 | 1980-03-04 | Linde Ag | Hollow piston for hydrostatic machines |
| EP0808988A1 (en) * | 1996-05-20 | 1997-11-26 | Brueninghaus Hydromatik Gmbh | Hollow piston with a radially welded cover |
| DE19934217A1 (en) * | 1999-07-21 | 2001-02-01 | Brueninghaus Hydromatik Gmbh | Piston arrangement for a piston engine |
| US6662709B1 (en) * | 1999-07-21 | 2003-12-16 | Brueninghaus Hydromatik Gmbh | Hollow piston for a piston engine and method for producing a hollow piston |
| CN202789498U (en) * | 2012-10-07 | 2013-03-13 | 四川省宜宾普什驱动有限责任公司 | Hollow plunger |
Non-Patent Citations (3)
| Title |
|---|
| 张志鹏等: "基于斜盘式轴向柱塞泵结构优化的应用研究", 《液压气动与密封》, 31 July 2011 (2011-07-31) * |
| 杨逢瑜等: "残留容积对柱塞泵容积效率的影响", 《甘肃科学学报》, 31 March 2011 (2011-03-31) * |
| 陆望龙: "《实用液压机械故障排除与修理大全》", 30 June 2006, article "柱塞泵的局部结构形式" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339230A (en) * | 2017-07-05 | 2017-11-10 | 哈尔滨理工大学 | A kind of positive displacement plunger with wave surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130109 |