CN209762211U - Planet carrier with pre-tightened stand column - Google Patents
Planet carrier with pre-tightened stand column Download PDFInfo
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- CN209762211U CN209762211U CN201920434399.2U CN201920434399U CN209762211U CN 209762211 U CN209762211 U CN 209762211U CN 201920434399 U CN201920434399 U CN 201920434399U CN 209762211 U CN209762211 U CN 209762211U
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- web plate
- upright
- planet carrier
- bolt mounting
- upright post
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Abstract
The utility model discloses a but planet carrier of stand pretension, include: the upper web plate, the lower web plate and the plurality of upright posts; the upright post is positioned between the upper web plate and the lower web plate, and two ends of the upright post are respectively connected with the upper web plate and the lower web plate; the upper web plate, the lower web plate and the upright post are integrally formed into a whole; the whole body formed by the upper web plate, the lower web plate and the upright post is provided with a bolt mounting hole; the extending direction of the bolt mounting hole is parallel to the extending direction of the upright post; but planet carrier of stand pretension still includes: and the pre-tightening bolt is used for applying pre-tightening force to the upright post. The utility model discloses an useful part lies in, can provide initial compressive stress to the planet carrier part, improves bearing capacity and material utilization ratio of current planet carrier under ultimate strength and fatigue strength.
Description
Technical Field
The utility model relates to a planet carrier, concretely relates to but planet carrier of stand pretension.
background
At present, planet carriers of planetary transmission are mostly formed by casting, and the materials mainly comprise cast iron and cast steel. The planet carrier is mainly used for transmitting torque. Under the action of torque, one side of the root of the upright column of the planet carrier mainly bears tensile stress, and the other side of the root of the upright column of the planet carrier mainly bears compressive stress.
because the compression resistance of cast iron and cast steel materials is far greater than the tensile resistance, the tensile side material is easier to reach the tensile strength limit of the materials under the action of large torque, and the compression side material does not reach the compression strength limit of the materials. The utilization rate of the whole planet carrier material is low.
At present, a local shot peening strengthening method is commonly used to form residual compressive stress on the surface of a material so as to improve the fatigue strength of a structure. However, the residual compressive stress formed by shot blasting is difficult to quantify, and the structure is attenuated along with the load, so that the strengthening effect cannot be stably ensured.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of prior art, the utility model provides a but stand planet carrier of pretension carries out the pretension through the bolt to the stand of planet carrier and provides initial pretension stress, improves bearing capacity and material utilization ratio of planet carrier under extreme condition and tired operating mode.
In order to achieve the above object, the utility model adopts the following scheme:
A post-pretensionable planet carrier comprising: the upper web plate, the lower web plate and the plurality of upright posts; the upright post is positioned between the upper web plate and the lower web plate, and two ends of the upright post are respectively connected with the upper web plate and the lower web plate; the upper web plate, the lower web plate and the upright post are integrally formed into a whole; the whole body formed by the upper web plate, the lower web plate and the upright post is provided with a bolt mounting hole; the extending direction of the bolt mounting hole is parallel to the extending direction of the upright post; but planet carrier of stand pretension still includes: the fastener is used for applying pretightening force to the upright post; the fastener includes: pre-tightening the bolts; the bolt mounting hole extends into the upright column, and the pre-tightening bolt extends into the bolt mounting hole and is partially positioned in the upright column to form threaded connection with the hole wall of the bolt mounting hole.
Furthermore, a plurality of bolt mounting holes are formed in the two sides of the whole body formed by the upper web plate, the lower web plate and the upright post.
Further, bolt mounting holes formed at two sides of the whole body formed by the upper web plate, the lower web plate and the upright post are aligned.
a post-pretensionable planet carrier comprising: the upper web plate, the lower web plate and the plurality of upright posts; the upright post is positioned between the upper web plate and the lower web plate, and two ends of the upright post are respectively connected with the upper web plate and the lower web plate; the upper web plate, the lower web plate and the upright post are integrally formed into a whole; the whole body formed by the upper web plate, the lower web plate and the upright post is provided with a bolt mounting hole; the extending direction of the bolt mounting hole is parallel to the extending direction of the upright post; but planet carrier of stand pretension still includes: the fastener is used for applying pretightening force to the upright post; the fastener includes: pre-tightening bolts and nuts; the bolt mounting hole penetrates through the upper web plate, the upright post and the lower web plate; the pre-tightening bolt penetrates through the bolt mounting hole and is in threaded connection with the nut.
Further, the number of the pre-tightening bolts is larger than or equal to the number of the stand columns.
A post-pretensionable planet carrier comprising: the upper web plate, the lower web plate and the plurality of upright posts; the upright post is positioned between the upper web plate and the lower web plate, and two ends of the upright post are respectively connected with the upper web plate and the lower web plate; the upper web plate, the lower web plate and the upright post are integrally formed into a whole; the whole body formed by the upper web plate, the lower web plate and the upright post is provided with a bolt mounting hole; the extending direction of the bolt mounting hole is parallel to the extending direction of the upright post; but planet carrier of stand pretension still includes: the fastener is used for applying pretightening force to the upright post; the fastener comprises a pre-tightening bolt and a nut; the bolt mounting hole penetrates through the upper web plate and the lower web plate; the pre-tightening bolt penetrates through the bolt mounting hole and is in threaded connection with the nut; the distance between the pre-tightening bolt and the upright post is less than 80 mm.
Furthermore, two pretension bolts are respectively positioned on two sides of the same upright post.
The utility model discloses an useful part lies in, provides a simple and stable structure that can form the local initial compressive stress of planet carrier, can improve bearing capacity and material utilization ratio of current planet carrier under ultimate strength and fatigue strength.
Drawings
Fig. 1 is a schematic view of a planet carrier of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the carrier of FIG. 1;
FIG. 3 is a cross-sectional view of another position of the carrier of FIG. 2;
Fig. 4 is a cross-sectional view of a carrier of a second embodiment of the present invention;
Fig. 5 is a schematic view of a carrier according to a second embodiment of the present invention.
Planet carriers (100, 200, 300), upper webs (101, 201, 301), lower webs (102, 202, 302), studs (103,203,303), bolt mounting holes (104, 204, 304), and preload bolts (105, 205, 305).
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As a first embodiment, as shown in fig. 1 to 3, a planet carrier 100 with a pre-tightened pillar includes: an upper web 101, a lower web 102 and a number of uprights 103.
The upright 103 is located between the upper and lower webs 101, 102 and the two ends of the upright 103 are connected to the upper and lower webs 101, 102 respectively. The upper web 101, the lower web 102 and the upright 103 are integrally formed as a single piece. Specifically, the upper web 101, the lower web 102 and the pillar 103 are integrally formed as a single body by casting. The material can be cast iron or cast steel.
the whole of the upper web 101, the lower web 102 and the column 103 has bolt mounting holes 104. The bolt mounting hole 104 extends in a direction parallel to the direction in which the pillar 103 extends. The planet carrier 100 defines a central axis. The upright 103 extends in a direction parallel to the central axis. The bolt mounting holes 104 extend in a direction parallel to the central axis. The extending direction of the bolt mounting hole 104 may also be referred to as a hole depth direction.
The planet carrier 100 with pre-tensioned columns further comprises: a pretension bolt 105 for applying a pretension force to the column 103. The pre-tightening bolt 105 is used as a fastener to apply pre-tightening force to the upright post 103 so as to form local initial compressive stress of the planet carrier.
The bolt mounting hole 104 extends into the upright post 103, and the pre-tightening bolt 105 extends into the bolt mounting hole 104 and is partially positioned in the upright post 103 to form threaded connection with the hole wall of the bolt mounting hole 104.
In a specific embodiment, a plurality of bolt mounting holes 104 are formed on both sides of the whole body of the upper web 101, the lower web 102 and the pillar 103.
For the case where the pre-tightening is not required to be performed simultaneously on both sides of the pillar 103, the root of the one-sided pillar 103 may be pre-tightened using a short bolt. When both sides are required to be pre-tightened simultaneously, pre-tightening bolts 105 can be respectively installed on both sides of the upright post 103. Likewise, the pretensioning bolt 105 can be selected to pretension a particular area as desired. A bolt mounting hole 104 is arranged in the column 103 as close as possible to the pretensioning area, so that the area to be pretensioned is located between the threaded engagement area and the bolt head. After the assembly of the planet carrier 100 is completed, the pre-tightening bolts 105 are installed and the pre-tightening force of the pre-tightening bolts 105 is applied by means of hydraulic stretching and the like. The required pre-tensioning stress, mainly the pre-tensioning compressive stress, is formed at the root of the upright 103.
In a specific embodiment, bolt mounting holes 104 formed at both sides of the whole of the upper web 101, the lower web 102 and the pillar 103 are aligned.
In one embodiment, two pretensioning bolts 105 extend into the same upright 103. As an alternative, it is also possible to use one pretensioning bolt 105 or more than 2 pretensioning bolts 105 extending into the same column 103.
As a second embodiment, as shown in fig. 4, a stand-pretightenable planet carrier 200 includes: an upper web 201, a lower web 202 and a number of uprights 203.
The upright 203 is located between the upper web 201 and the lower web 202 and the two ends of the upright 203 are connected to the upper web 201 and the lower web 202, respectively. The upper web 201, the lower web 202 and the upright 203 are integrally formed as a single piece. Specifically, the upper web 201, the lower web 202 and the upright 203 are integrally formed as a single body by casting. The material can be cast iron or cast steel.
The whole of the upper web 201, the lower web 202 and the upright 203 has bolt mounting holes 204. The bolt mounting hole 204 extends in a direction parallel to the direction in which the pillar 203 extends. The planet carrier 200 defines a central axis. The upright 203 extends in a direction parallel to the central axis. The bolt mounting holes 204 extend in a direction parallel to the central axis. The extending direction of the bolt mounting hole 204 may also be referred to as a hole depth direction.
The pre-tensionable stand planet carrier 200 further comprises: a pretension bolt 205 and a nut for applying a pretension to the upright 203. The pre-tightening bolt 205 and the nut are used as fasteners to apply pre-tightening force to the upright column 203 so as to form local initial compressive stress of the planet carrier.
Bolt mounting holes 204 extend through the upper web 201, the upright 203 and the lower web 202. The pretension bolt 205 passes through the bolt mounting hole 204 and is in threaded connection with the nut.
In one embodiment, the number of pre-tightening bolts 205 is greater than or equal to the number of posts 203. Two pretension bolts 205 run through the same upright 203. As an alternative, one pretensioning bolt 205 or more than 2 pretensioning bolts 205 can also be used through the same upright 203.
As a third embodiment, as shown in fig. 5, a planet carrier 300 with a pre-tightened pillar 303 comprises: an upper web 301, a lower web 302, and a number of uprights 303.
Upright 303 is located between upper web 301 and lower web 302 and the ends of upright 303 connect upper web 301 and lower web 302, respectively. The upper web 301, the lower web 302 and the upright 303 are integrally formed as a single piece. Specifically, the upper web 301, the lower web 302 and the upright 303 are integrally formed as a single body by casting. The material can be cast iron or cast steel.
The whole of the upper web 301, the lower web 302 and the upright 303 has bolt mounting holes 304. The bolt mounting hole 304 extends in a direction parallel to the direction in which the upright 303 extends. The planet carrier 300 defines a central axis. The upright 303 extends in a direction parallel to the central axis. The bolt mounting holes 304 extend parallel to the central axis. The extending direction of the bolt mounting hole 304 may also be referred to as a hole depth direction.
The planet carrier 300 with the pre-tensioned upright 303 further comprises: a pretension bolt 305 and a nut for applying pretension to the upright 303. The pre-tightening bolt 305 and the nut are used as fasteners to apply pre-tightening force to the upright post 303 so as to form local initial compressive stress of the planet carrier.
Bolt mounting holes 304 extend through the upper and lower webs 301, 302. The preload bolt 305 passes through the bolt mounting hole 304 and is threadedly coupled to the nut.
And bolt mounting holes 304 are arranged close to the pre-tightening area for pre-tightening, so that a good pre-tightening effect is achieved. In a preferred embodiment, the distance from the pretensioning bolt 305 to the upright 303 is less than 80 mm.
In one embodiment, the number of pre-tightening bolts 305 is greater than or equal to the number of posts 303. Two pre-tightening bolts 305 are respectively positioned on two sides of the same upright 303.
The above 3 embodiments disclose 3 ways of applying pretightening force to the stand column through the fastening piece, and any two or 3 of the 3 ways can be applied to the same planet carrier according to requirements.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (7)
1. A post-pretensionable planet carrier comprising: the upper web plate, the lower web plate and the plurality of upright posts; the upright column is positioned between the upper web plate and the lower web plate, and two ends of the upright column are respectively connected with the upper web plate and the lower web plate; the structure is characterized in that the upper web plate, the lower web plate and the upright post are integrally formed into a whole; the whole body formed by the upper web plate, the lower web plate and the upright post is provided with a bolt mounting hole; the extending direction of the bolt mounting hole is parallel to the extending direction of the upright post; the planet carrier with the pre-tightened stand column further comprises: a fastener for applying a pre-load force to the upright; the fastener includes: pre-tightening the bolts; the bolt mounting hole extends into the upright column, and the pre-tightening bolt extends into the bolt mounting hole, is partially positioned in the upright column and is in threaded connection with the hole wall of the bolt mounting hole.
2. stand-pretensioned planet carrier according to claim 1,
And a plurality of bolt mounting holes are formed in the two sides of the whole body formed by the upper web plate, the lower web plate and the upright post.
3. Stand-pretensioned planet carrier according to claim 2,
the bolt mounting holes formed in the two sides of the whole body formed by the upper web plate, the lower web plate and the upright post are aligned.
4. A post-pretensionable planet carrier comprising: the upper web plate, the lower web plate and the plurality of upright posts; the upright column is positioned between the upper web plate and the lower web plate, and two ends of the upright column are respectively connected with the upper web plate and the lower web plate; the structure is characterized in that the upper web plate, the lower web plate and the upright post are integrally formed into a whole; the whole body formed by the upper web plate, the lower web plate and the upright post is provided with a bolt mounting hole; the extending direction of the bolt mounting hole is parallel to the extending direction of the upright post; the planet carrier with the pre-tightened stand column further comprises: a fastener for applying a pre-load force to the upright; the fastener includes: pre-tightening bolts and nuts; the bolt mounting hole penetrates through the upper web, the upright post and the lower web; the pre-tightening bolt penetrates through the bolt mounting hole and is in threaded connection with the nut.
5. Stand-pretensioned planet carrier according to claim 4,
The number of the pre-tightening bolts is larger than or equal to that of the upright posts.
6. A post-pretensionable planet carrier comprising: the upper web plate, the lower web plate and the plurality of upright posts; the upright column is positioned between the upper web plate and the lower web plate, and two ends of the upright column are respectively connected with the upper web plate and the lower web plate; the structure is characterized in that the upper web plate, the lower web plate and the upright post are integrally formed into a whole; the whole body formed by the upper web plate, the lower web plate and the upright post is provided with a bolt mounting hole; the extending direction of the bolt mounting hole is parallel to the extending direction of the upright post; the planet carrier with the pre-tightened stand column further comprises: a fastener for applying a pre-load force to the upright; the fastener includes: pre-tightening bolts and nuts; the bolt mounting hole penetrates through the upper web and the lower web; the pre-tightening bolt penetrates through the bolt mounting hole and is in threaded connection with the nut; the distance between the pre-tightening bolt and the upright post is less than 80 mm.
7. Stand-pretensioned planet carrier according to claim 6,
The number of the pre-tightening bolts is larger than or equal to that of the upright posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920434399.2U CN209762211U (en) | 2019-04-02 | 2019-04-02 | Planet carrier with pre-tightened stand column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920434399.2U CN209762211U (en) | 2019-04-02 | 2019-04-02 | Planet carrier with pre-tightened stand column |
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| Publication Number | Publication Date |
|---|---|
| CN209762211U true CN209762211U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920434399.2U Active CN209762211U (en) | 2019-04-02 | 2019-04-02 | Planet carrier with pre-tightened stand column |
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| Country | Link |
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| CN (1) | CN209762211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899507A (en) * | 2019-04-02 | 2019-06-18 | 南京高速齿轮制造有限公司 | The planet carrier that column can pre-tighten |
-
2019
- 2019-04-02 CN CN201920434399.2U patent/CN209762211U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899507A (en) * | 2019-04-02 | 2019-06-18 | 南京高速齿轮制造有限公司 | The planet carrier that column can pre-tighten |
| CN109899507B (en) * | 2019-04-02 | 2024-05-14 | 南京高速齿轮制造有限公司 | Planet carrier with pre-tightening upright post |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200508 Address after: 211103 No.30, Houjiao Road, gaoxinyuan, Jiangning District, Nanjing City, Jiangsu Province Patentee after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211103 Jiangning Science Park, Nanjing, Jiangsu, 1 Tianyuan East Road. Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230207 Granted publication date: 20191210 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230327 Granted publication date: 20191210 |