CN202812084U - Gear structure of hydraulic pump - Google Patents
Gear structure of hydraulic pump Download PDFInfo
- Publication number
- CN202812084U CN202812084U CN 201220358116 CN201220358116U CN202812084U CN 202812084 U CN202812084 U CN 202812084U CN 201220358116 CN201220358116 CN 201220358116 CN 201220358116 U CN201220358116 U CN 201220358116U CN 202812084 U CN202812084 U CN 202812084U
- Authority
- CN
- China
- Prior art keywords
- gear
- hydraulic pump
- wheel disc
- gear structure
- holes
- 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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- Rotary Pumps (AREA)
Abstract
The utility model discloses a gear structure of a hydraulic pump. The gear structure comprises a barrel. A gear disc which is subjected to rustproof treatment is arranged on the outer portion of the barrel, surfaces of the gear disc are free of defects, a plurality of gear teeth are respectively arranged on the peripheral edge surrounding the gear disc, a stepped axial through hole is arranged on the barrel, and annular grooves are respectively arranged on the front surface and the rear surface, which surround the periphery of the stepped axial through hole, of the gear disc and are communicated with each other via a plurality of through holes respectively. The gear structure is simple, and the weight of a gear is reduced owing to the annular grooves on the gear disc and the through holes, so that the gear is low in vibration in a transmission running process, and is low in noise and stable in rotational speed.
Description
Technical field
The utility model relates to the part field of oil hydraulic pump, specifically a kind of hydraulic pump gear structure.
Background technique
Oil hydraulic pump is the dynamical element of hydraulic system, and its effect is the pressure energy that the mechanical energy of prime mover is converted to liquid, refers to the oil pump in the hydraulic system, and it provides power to whole hydraulic system.The structural type of oil hydraulic pump generally has gear pump, vane pump and plunger pump.
Gear is the inner common gearing parts of oil hydraulic pump.The gear of existing oil hydraulic pump mounted inside vibrates larger in the course of the work, produces a large amount of noises when causing work, thereby has influence on the normal operation of oil hydraulic pump.
The model utility content
The purpose of this utility model provides a kind of hydraulic pump gear structure, alleviates the weight of gear, makes its load in the transmission operation process little, vibrates littlely, and rotating speed is steady.
The technical solution of the utility model is as follows:
A kind of hydraulic pump gear structure, include cylindrical shell, it is characterized in that: the outside of described cylindrical shell has by surperficial zero defect and carries out antirust processing wheel disc, edge, surrounding around wheel disc has respectively a plurality of gear teeth, described cylindrical shell is provided with step-like axial hole, front and back around step-like axial hole wheel disc on every side is respectively equipped with annular groove, is connected by a plurality of through holes respectively between the annular groove of described wheel disc front and back.
Described hydraulic pump gear structure is characterized in that: described a plurality of through holes be distributed in radially step-like axial hole around.
The beneficial effects of the utility model:
The utility model is simple in structure, and the annular groove on the wheel disc and through hole have alleviated the weight of gear, and it is little that it is vibrated in the transmission operation process, and noise is low, and rotating speed is steady.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Referring to accompanying drawing, a kind of hydraulic pump gear structure, include cylindrical shell 1, the outside of cylindrical shell 1 has by surperficial zero defect and carries out antirust processing wheel disc 2, edge, surrounding around wheel disc 2 has respectively a plurality of gear teeth 3, cylindrical shell 1 is provided with step-like axial hole 4, and the front and back that centers on step-like axial hole 4 wheel disc 2 on every side is respectively equipped with annular groove 5, is connected by a plurality of through holes 6 respectively between the annular groove 5 of wheel disc 2 front and backs.
In the utility model, a plurality of through holes 6 be distributed in radially step-like axial hole 4 around.
Claims (2)
1. hydraulic pump gear structure, include cylindrical shell, it is characterized in that: the outside of described cylindrical shell has by surperficial zero defect and carries out antirust processing wheel disc, edge, surrounding around wheel disc has respectively a plurality of gear teeth, described cylindrical shell is provided with step-like axial hole, front and back around step-like axial hole wheel disc on every side is respectively equipped with annular groove, is connected by a plurality of through holes respectively between the annular groove of described wheel disc front and back.
2. hydraulic pump gear structure according to claim 1 is characterized in that: described a plurality of through holes be distributed in radially step-like axial hole around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358116 CN202812084U (en) | 2012-07-23 | 2012-07-23 | Gear structure of hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358116 CN202812084U (en) | 2012-07-23 | 2012-07-23 | Gear structure of hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812084U true CN202812084U (en) | 2013-03-20 |
Family
ID=47870957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220358116 Expired - Fee Related CN202812084U (en) | 2012-07-23 | 2012-07-23 | Gear structure of hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812084U (en) |
-
2012
- 2012-07-23 CN CN 201220358116 patent/CN202812084U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20130320 Termination date: 20140723 |
|
| EXPY | Termination of patent right or utility model |