CN204663860U - A kind of piston shoes piston structure with roller - Google Patents
A kind of piston shoes piston structure with roller Download PDFInfo
- Publication number
- CN204663860U CN204663860U CN201520227245.8U CN201520227245U CN204663860U CN 204663860 U CN204663860 U CN 204663860U CN 201520227245 U CN201520227245 U CN 201520227245U CN 204663860 U CN204663860 U CN 204663860U
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- CN
- China
- Prior art keywords
- piston shoes
- roller
- piston
- plunger
- groove
- 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.)
- Expired - Fee Related
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Abstract
The utility model is a kind of piston shoes piston structure with roller, this structure comprises piston shoes (2) and plunger (3), by spherical linkage anatomical connectivity between piston shoes (2) and plunger (3), it is characterized in that: at each piston shoes (2) on the surface, arrange a roller (1) to contact with swash plate, roller (1) for two ends are hemispheric cones, roller (1) is laterally arranged in the cone groove (4) on piston shoes (2) surface, cone groove (4) coincide with the profile of roller (1), the axis of roller (1) is lower than the surface of piston shoes (2), after lathe rolling beading, the hemisphere at roller (1) two ends forms spherical linkage structure in piston shoes groove (4), in addition, fluid flows in piston shoes groove (4) from the center hole (5) of plunger (3).Compared with other piston shoes plunger assemblies, piston shoes add roller, after contacting with swash plate, instead of sliding friction with rolling friction, avoid the wearing and tearing on piston shoes surface, improve the life-span of plunger assembly.
Description
Technical field
The utility model is a kind of piston shoes piston structure with roller, belongs to the technical field of structures of product.This structure is used for the inclined disc type axial fuel oil plunger pump with piston shoes.
Background technique
At present, the structure adopting band piston shoes form of the plunger assembly in plunger pump, as shown in Figure 1, its structure comprises piston shoes 2 and plunger 3 more.Because piston shoes 2 and swash plate friction pair are in semi-dry friction or critical friction state at work, although have oil film to exist between two friction surfaces, but because oil film is thinner, still have part-metallic surface microcosmic mountain portions to rub with the hands mutually to cut, the surface abrasion sliding and produce can not be eliminated completely, this material to piston shoes, surface treatment etc. propose high request, and the life-span of how to improve piston shoes receives certain restriction.
Summary of the invention
The utility model designs for above-mentioned the deficiencies in the prior art just and provides a kind of piston shoes piston structure with roller, its objective is the sliding friction produced when avoiding piston shoes to move in a circle on swash plate, improve working life and the reliability of piston shoes plunger assembly.
The purpose of this utility model is realized by following technical measures:
The piston shoes piston structure of this kind of band roller, this structure comprises piston shoes (2) and plunger (3), by spherical linkage anatomical connectivity between piston shoes (2) and plunger (3), it is characterized in that: at each piston shoes (2) on the surface, arrange a roller (1) to contact with swash plate, roller (1) for two ends are hemispheric cones, roller (1) is laterally arranged in the cone groove (4) on piston shoes (2) surface, cone groove (4) coincide with the profile of roller (1), the axis of roller (1) is lower than the surface of piston shoes (2), the hemisphere at roller (1) two ends forms spherical linkage structure in piston shoes groove (4), in addition, fluid flows in piston shoes groove (4) from the center hole (5) of plunger (3).
The principle design cone roller that technical solutions of the utility model are different with different radii linear velocity in circular movement according to the reference radius of plunger pump rotor, is fixed on piston shoes on the surface by seaming tool by cone roller (1).When roller rolls on swash plate, fluid flows in piston shoes groove (4) from plunger center hole (5), forms stable oil film, for lubrication.
The utility model has the advantages that: compared with other piston shoes piston structures, piston shoes directly do not contact with swash plate and produce sliding friction, but the circular movement of the piston shoes plunger assembly that rolled on swash plate by roller, sliding friction is instead of with rolling friction, avoid the wearing and tearing on piston shoes surface, improve the life-span of piston shoes plunger assembly.
Accompanying drawing explanation
Fig. 1 is existing piston shoes piston structure schematic diagram
Fig. 2 is the piston shoes piston structure schematic diagram of the utility model band roller
Embodiment
Below with reference to drawings and Examples, the utility model is further described:
Shown in accompanying drawing 2, the piston shoes piston structure of this kind of band roller, this structure comprises piston shoes 2 and plunger 3, by spherical linkage anatomical connectivity between piston shoes 2 and plunger 3, it is characterized in that: on the surface of each piston shoes 2, arrange a roller 1 to contact with swash plate, roller 1 for two ends are hemispheric cones, roller 1 is closed up by frock and is laterally arranged in the cone groove 4 on piston shoes 2 surface, cone groove 4 coincide with the profile of roller 1, the axis of roller 1 is lower than the surface of piston shoes 2, the hemisphere at roller 1 two ends forms spherical linkage structure in piston shoes groove 4, in addition, fluid flows in piston shoes groove 4 from the center hole 5 of plunger 3.The tapering of roller, length parameter depend on the circumferential movement of plunger.
Piston shoes plunger with rotor around main axis time, the roller 1 on piston shoes contacts with swash plate, and rolls, and completes the circular movement of assembly on swash plate.
Compared with prior art, the roller 1 on piston shoes contacts with swash plate, instead of the sliding friction produced when piston shoes move in a circle on swash plate with rolling friction, improves working life and the reliability of piston shoes piston structure.
Claims (1)
1. the piston shoes piston structure with roller, this structure comprises piston shoes (2) and plunger (3), by spherical linkage anatomical connectivity between piston shoes (2) and plunger (3), it is characterized in that: on the surface of each piston shoes (2), arrange a roller (1) to contact with swash plate, roller (1) for two ends are hemispheric cones, roller (1) is laterally arranged in the cone groove (4) on piston shoes (2) surface, cone groove (4) coincide with the profile of roller (1), the axis of roller (1) is lower than the surface of piston shoes (2), the hemisphere at roller (1) two ends forms spherical linkage structure in piston shoes groove (4), in addition, fluid flows in piston shoes groove (4) from the center hole (5) of plunger (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227245.8U CN204663860U (en) | 2015-04-15 | 2015-04-15 | A kind of piston shoes piston structure with roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520227245.8U CN204663860U (en) | 2015-04-15 | 2015-04-15 | A kind of piston shoes piston structure with roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663860U true CN204663860U (en) | 2015-09-23 |
Family
ID=54134248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520227245.8U Expired - Fee Related CN204663860U (en) | 2015-04-15 | 2015-04-15 | A kind of piston shoes piston structure with roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271375A (en) * | 2016-08-31 | 2017-01-04 | 南京晨光集团有限责任公司 | A kind of for space flight microminiature precision sphere coupling part rolling device |
-
2015
- 2015-04-15 CN CN201520227245.8U patent/CN204663860U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271375A (en) * | 2016-08-31 | 2017-01-04 | 南京晨光集团有限责任公司 | A kind of for space flight microminiature precision sphere coupling part rolling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20190415 |