CN203248664U - Primary sun gear - Google Patents
Primary sun gear Download PDFInfo
- Publication number
- CN203248664U CN203248664U CN 201320273058 CN201320273058U CN203248664U CN 203248664 U CN203248664 U CN 203248664U CN 201320273058 CN201320273058 CN 201320273058 CN 201320273058 U CN201320273058 U CN 201320273058U CN 203248664 U CN203248664 U CN 203248664U
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- Prior art keywords
- sun gear
- gear
- gear body
- assembly department
- installation part
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Abstract
The utility model belongs to the technical field of accessories of hydraulic transmission equipment, and particularly relates to a primary sun gear. The primary sun gear solves the technical problem that an existing primary sun gear is not reasonable enough in design. The primary sun gear is characterized in that the sun gear comprises a cylindrical gear body and an installation part, wherein the installation part is connected with the gear body integrally, the outer diameter of the installation part is larger than the outer diameter of the gear body, the installation part is longer than the gear body, a plurality of gear teeth are arranged on the gear body in the axial direction of the gear body, a splined hole is formed in the center of the axial direction of the installation part, the splined hole is a blind hole, and an internal spline is arranged on the inner wall of the splined hole. Compared with the prior art, the primary sun gear has the advantages of being more reasonable in design, simple in structure, easy to manufacture, easy to install and dismantle, high in overall structural strength due to the fact that the internal spline can prevent circumferential rotation, and long in service life.
Description
Technical field
The utility model belongs to hydraulic transmission equipment accessory technical field, especially relates to a kind of chopped-off head sun gear.
Background technique
Hydraulic transmission is the kind of drive of coming transferring energy and controlling as working medium with liquid.Hydraulic transmission and Pneumatic Transmission are called Fluid-transmission, are according to the 17th century emerging technology growing up of the hydrostatic pressure transmission principle that proposes of Pascal, are a special kind of skill of widely using in the industrial and agricultural production.Nowadays, the height of Fluid-transmission technical merit has become the important symbol of a national Industry Development Level.The chopped-off head sun gear generally comprises gear mass, is provided with some equally distributed teeth at gear mass, is provided with center hole at the gear mass center; There is following defective existing chopped-off head sun gear in it: is difficult for installing, that is to say that efficiency of assembling is lower, and secondly not firm with the linkage structure of axle, circumferentially rotate easily, and whole structural strength to be lower, working life is short.
For this reason, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of planetary type gear transmission unit [application number: 200920230289.0], at least comprise sun gear, planet wheel and planet carrier, planet carrier is milled with U-shaped groove, sun gear has the pin shaft hole that is complementary with U-shaped groove, pin shaft hole is tangent with row U-groove bevel face, is flexibly connected by bearing pin between planet carrier and the sun gear, and pin roll end face is provided with for radially spacing bearing or baffle plate.Above-mentioned scheme has been improved prior art to a certain extent, but at least also there is following defective in this scheme: be difficult for installing and occur easily and circumferentially rotate, in addition, structural strength is low, and working life is short.
The model utility content
The purpose of this utility model is for the problems referred to above, provides a kind of difficult generation circumferentially to rotate, and is easy to install the chopped-off head sun gear high with structural strength.
For achieving the above object, the utility model has adopted following technical proposal: this chopped-off head sun gear, it is characterized in that, this sun gear comprises the assembly department that cylindrical gear body and gear body are connected as a single entity, described assembly department external diameter is greater than the external diameter of gear body, the length of assembly department is longer than the length of gear body, be provided with some teeth that arrange along its axial direction at the gear body, be provided with splined hole in the assembly department axial centre, described splined hole be blind hole and within it wall be shaped with internal spline.Obviously, the utility model design is more reasonable, and simple in structure and easy manufacturing is easy to installation and removal, and in addition, internal spline can prevent circumferential rotation, and whole structural strength is very high, and working life is longer, can reduce user cost.
In above-mentioned chopped-off head sun gear, described assembly department is provided with the annular slot to make way that is positioned at the bottom of the splined hole hole.Make things convenient for gear shaping.
In above-mentioned chopped-off head sun gear, described gear body is provided with ring-shaped step away from an end of assembly department.The convenient installation.
In above-mentioned chopped-off head sun gear, be provided with chamfer surface in each teeth away from an end of assembly department.The convenient installation.
In above-mentioned chopped-off head sun gear, the described internal spline number of teeth is 21 teeth.
Compared with prior art, the advantage of this chopped-off head sun gear is: it is more reasonable to design, simple in structure and easy manufacturing, be easy to installation and removal, in addition, internal spline can prevent circumferential rotation, and whole structural strength is very high, and working life is longer, can reduce user cost.
Description of drawings
Fig. 1 is the structural representation that the utility model provides.
Fig. 2 is the A place structural representation among Fig. 1.
Among the figure, gear body 1, teeth 11, ring-shaped step 12, assembly department 2, splined hole 21, internal spline 21a, annular slot to make way 22.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, 2, this chopped-off head sun gear comprises the assembly department 2 that cylindrical gear body 1 and gear body 1 are connected as a single entity, described assembly department 2 external diameters are greater than the external diameter of gear body 1, the length of assembly department 2 is longer than the length of gear body 1, be provided with some teeth 11 that arrange along its axial direction at gear body 1, be provided with chamfer surface in each teeth 11 away from an end of assembly department 2, be provided with splined hole 21 in assembly department 2 axial centre, described splined hole 21 for blind hole and within it wall be shaped with internal spline 21a, this internal spline 21a number of teeth is 21 teeth.Obviously, the present embodiment design is more reasonable, and simple in structure and easy manufacturing is easy to installation and removal, in addition, internal spline can prevent circumferential rotation, and whole structural strength is very high, working life is longer, can reduce user cost, meets the trend of current social technical development.
Specifically, in order to make things convenient for gear shaping, present embodiment assembly department 2 is provided with the annular slot to make way 22 that is positioned at the bottom of splined hole 21 holes.In addition, be provided with ring-shaped step 12 at gear body 1 away from an end of assembly department 2.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the terms such as gear body 1, teeth 11, ring-shaped step 12, assembly department 2, splined hole 21, internal spline 21a, annular slot to make way 22, do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (5)
1. chopped-off head sun gear, it is characterized in that, this sun gear comprises the assembly department (2) that cylindrical gear body (1) and gear body (1) are connected as a single entity, described assembly department (2) external diameter is greater than the external diameter of gear body (1), the length of assembly department (2) is longer than the length of gear body (1), be provided with some teeth (11) that arrange along its axial direction at gear body (1), be provided with splined hole (21) in assembly department (2) axial centre, described splined hole (21) for blind hole and within it wall be shaped with internal spline (21a).
2. chopped-off head sun gear according to claim 1 is characterized in that, described assembly department (2) is provided with the annular slot to make way (22) that is positioned at the bottom of splined hole (21) hole.
3. chopped-off head sun gear according to claim 1 and 2 is characterized in that, described gear body (1) is provided with ring-shaped step (12) away from an end of assembly department (2).
4. chopped-off head sun gear according to claim 3 is characterized in that, is provided with chamfer surface in each teeth (11) away from an end of assembly department (2).
5. chopped-off head sun gear according to claim 1 is characterized in that, described internal spline (21a) number of teeth is 21 teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320273058 CN203248664U (en) | 2013-05-16 | 2013-05-16 | Primary sun gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320273058 CN203248664U (en) | 2013-05-16 | 2013-05-16 | Primary sun gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248664U true CN203248664U (en) | 2013-10-23 |
Family
ID=49375103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320273058 Expired - Fee Related CN203248664U (en) | 2013-05-16 | 2013-05-16 | Primary sun gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203248664U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573928A (en) * | 2013-11-12 | 2014-02-12 | 湖南中联重科车桥有限公司 | Speed reducer, bearing-type planetary gear and sun wheel |
| CN108386517A (en) * | 2018-04-17 | 2018-08-10 | 北京大圣格尔冶金设备有限公司 | A kind of pushing gear |
-
2013
- 2013-05-16 CN CN 201320273058 patent/CN203248664U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573928A (en) * | 2013-11-12 | 2014-02-12 | 湖南中联重科车桥有限公司 | Speed reducer, bearing-type planetary gear and sun wheel |
| CN103573928B (en) * | 2013-11-12 | 2016-05-04 | 湖南中联重科车桥有限公司 | A kind of decelerator, bearing-type planetary gear, sun gear |
| CN108386517A (en) * | 2018-04-17 | 2018-08-10 | 北京大圣格尔冶金设备有限公司 | A kind of pushing gear |
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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: 20131023 Termination date: 20150516 |
|
| EXPY | Termination of patent right or utility model |