CN212839334U - Planet carrier connecting structure - Google Patents
Planet carrier connecting structure Download PDFInfo
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- CN212839334U CN212839334U CN202021762674.2U CN202021762674U CN212839334U CN 212839334 U CN212839334 U CN 212839334U CN 202021762674 U CN202021762674 U CN 202021762674U CN 212839334 U CN212839334 U CN 212839334U
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- main shaft
- planet carrier
- hole
- connecting part
- disk
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Abstract
The utility model relates to a planetary gear technical field discloses a planet carrier connection structure for connect planet carrier and main shaft, include: the connecting part is arranged on the planet carrier, a connecting hole is formed in the main shaft, the main shaft is sleeved on the connecting part through the connecting hole, and the elastic modulus of the main shaft is set to be smaller than that of the connecting part; the connecting part is provided with a butting hole, and the butting part is arranged in the butting hole and butts against the inner wall of the butting hole, so that the connecting part is clamped between the main shaft and the butting part; and the locking disc is sleeved on the main shaft and extrudes the main shaft to the connecting part. Through the structure, the planet carrier connecting structure can improve the contact pressure between the main shaft and the planet carrier, so that the torque transmission capacity between the main shaft and the planet carrier is improved.
Description
Technical Field
The utility model relates to a planetary gear technical field especially relates to a planet carrier connection structure.
Background
In the planetary gear box, in order to transmit the torque transmitted by the main shaft to the planet carrier, the planet carrier of the wind power gear box and the main shaft are generally connected through a locking disc.
Normally, as shown in fig. 1, the position of the locking disk 1 ' is located outside the connecting portion 2 ' of the planet carrier, and the main shaft 3 ' is located inside the connecting portion 2 ' of the planet carrier, i.e. the locking disk 1 ' tightly presses the connecting portion 2 ' of the planet carrier against the main shaft 3 '. The pressure generated by the locking disc 1 ' can be transmitted to the contact surface of the main shaft 3 ' and the connecting part 2 ' of the planet carrier through the connecting part 2 ' of the planet carrier, so that the connection between the main shaft 3 ' and the connecting part 2 ' of the planet carrier is realized, and the purpose of transmitting the torque of the main shaft 3 ' to the planet carrier is realized.
At present, the common material of the planet carrier is QT700, and the common material of the main shaft 3' is steel or QT 400. Because the elastic modulus of the QT700 is higher than the QT400, under the action of the pressure of the locking disk 1 ', the connecting portion 2' of the planet carrier is not easily deformed radially (because the stiffness of the planet carrier is large), and the main shaft 3 'is easily deformed radially (because the stiffness of the main shaft 3' is small), so that the pressure finally transmitted to the contact surface of the main shaft 3 'and the connecting portion 2' of the planet carrier is small, and the torque transmission capability between the main shaft 3 'and the connecting portion 2' of the planet carrier is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a planet carrier connection structure, this planet carrier connection structure can improve the contact pressure between main shaft and the planet carrier to improve the biography between main shaft and the planet carrier and turn round the ability.
To achieve the purpose, the utility model adopts the following technical proposal:
a carrier connection structure for connecting a carrier and a main shaft, comprising: the connecting part is arranged on the planet carrier, a connecting hole is formed in the main shaft, the main shaft is sleeved on the connecting part through the connecting hole, and the elastic modulus of the main shaft is smaller than that of the connecting part; the connecting part is provided with a butting hole, and the butting part is arranged in the butting hole and butts against the inner wall of the butting hole, so that the connecting part is clamped between the main shaft and the butting part; and the locking disc is sleeved on the main shaft and extrudes the main shaft to the connecting part.
As a preferable scheme of the planet carrier connection structure, a plurality of axial grooves are formed in the portion, sleeved with the connection portion, of the main shaft, and the plurality of axial grooves are uniformly distributed at equal intervals along the circumferential direction of the main shaft.
As a preferred scheme of the planet carrier connecting structure, a step is formed in the peripheral wall surface of the connecting portion, and the connecting hole is sleeved on the small-diameter section of the step.
As a preferable scheme of the planet carrier connection structure, the abutting piece is located at the small-diameter section of the step and is opposite to the sleeving part of the main shaft and the connection part.
As a preferable scheme of the planet carrier connection structure, the axial length of the abutting member is equal to the length of the sleeve joint part of the main shaft and the connection part.
As a preferable scheme of the planet carrier connection structure, the abutting member is provided in a cylindrical shape, and an outer peripheral wall surface of the abutting member abuts against an inner wall of the abutting hole.
As a preferable scheme of the planet carrier connection structure, a lightening hole is formed in the abutting piece, and the central axis of the lightening hole is overlapped with the central axis of the connection portion.
As a preferred scheme of a planet carrier connection structure, the locking disc comprises an outer disc and an inner disc, the inner disc is axially slidably arranged on an inner ring surface of the outer disc, the cross section of the inner disc is wedge-shaped, and when the inner disc is inserted between the outer disc and the main shaft, the main shaft can be pressed and locked by the locking disc. As a preferable scheme of the planet carrier connection structure, an inner ring surface of the outer disc is provided with an inclined surface and is parallel to a wedge surface of the inner disc.
As a preferred scheme of the planet carrier connecting structure, a connecting table is arranged on the inner disc and is axially connected to the end face of the outer disc through a bolt.
The utility model has the advantages that:
the utility model provides a planet carrier connection structure, it is used for being connected planet carrier and main shaft, this planet carrier connection structure includes connecting portion, support and hold and the locking dish, connecting portion set up on the planet carrier, the connecting hole has been seted up on the main shaft, the main shaft is located on the connecting portion through the connecting hole cover, the elastic modulus of main shaft sets up to be less than the elastic modulus of connecting portion, support the hole on the connecting portion, support and hold in arranging in and support and hold in on the inner wall of holding the hole, make connecting portion press from both sides between main shaft and support, the locking dish cover is located on the main shaft and is locked and extrude the main shaft to connecting portion direction, make the main shaft tightly press on connecting portion, thereby realize the biography between main shaft and the planet carrier and turn round. In the structure, because the elastic modulus of the main shaft is smaller than that of the connecting part of the planet carrier, when the main shaft is extruded by the locking disc, the main shaft can deform to press the connecting part of the planet carrier, so that the contact pressure between the main shaft and the connecting part of the planet carrier is increased, and the torque transmission capacity between the main shaft and the planet carrier is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art planet carrier connection;
fig. 2 is a schematic view of a planet carrier connection structure according to an embodiment of the present invention;
fig. 3 is a schematic view of a main shaft in a planet carrier connection structure according to an embodiment of the present invention.
In fig. 1:
1', a locking disc; 2', a connecting part; 3', a main shaft.
In fig. 2-3:
1. a connecting portion; 12. a holding hole; 14. a step; 2. a holding member; 21. lightening holes; 3. a locking disc; 31. an outer disc; 32. an inner disc; 100. a main shaft; 101. connecting holes; 102. an axial slot.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the planet carrier connection structure provided by the present invention is described below with reference to the accompanying drawings and specific embodiments.
The embodiment provides a planet carrier connection structure, it is used for connecting planet carrier and main shaft 100, as shown in fig. 2, this planet carrier connection structure includes connecting portion 1 and locking dish 3 that set up on the planet carrier, connecting hole 101 has been seted up on the main shaft 100, main shaft 100 is located on connecting portion 1 through connecting hole 101 cover, the elastic modulus of main shaft 100 is less than the elastic modulus of connecting portion 1, locking dish 3 cover is located on main shaft 100, and lock main shaft 100 to connecting portion 1 direction and extrude, make main shaft 100 sticis on connecting portion 1, thereby realize the biography between main shaft 100 and the planet carrier and turn round. Through the structure, the elastic modulus of the main shaft 100 is smaller than that of the connecting part 1 of the planet carrier, so that when the main shaft 100 is extruded by the locking disc 3, the main shaft 100 can deform to press the connecting part 1 of the planet carrier, the contact pressure between the main shaft 100 and the connecting part 1 of the planet carrier is increased, and the torque transmission capacity between the main shaft 100 and the planet carrier can be improved.
As shown in fig. 3, preferably, an axial groove 102 is formed in a portion of the main shaft 100 that is sleeved with the connecting portion 1, and the axial groove 102 is used to reduce radial rigidity of the main shaft 100, so that when the main shaft 100 is pressed by the locking disk 3, radial deformation is easily generated to press the connecting portion 1, thereby increasing contact pressure between the main shaft 100 and the connecting portion 1, and facilitating improvement of torque transmission capacity between the main shaft 100 and the planet carrier. More preferably, the axial grooves 102 are provided in plurality, and the plurality of axial grooves 102 are uniformly distributed at equal intervals in the circumferential direction of the main shaft 100, so that the rigidity of the portion where the main shaft 100 is sleeved with the connecting portion 1 can be uniformly reduced, and the contact pressure between the main shaft 100 and the connecting portion 1 is uniformly distributed in the circumferential direction of the main shaft 100.
In this embodiment, the step 14 is formed on the outer peripheral wall surface of the connecting portion 1, the connecting hole 101 is sleeved on the small diameter section of the step 14, and when the spindle 100 is connected to the connecting portion 1, the end of the spindle 100 can abut against the step surface to be positioned, which facilitates the connection and positioning of the spindle 100 and the connecting portion 1.
Preferably, connecting portion 1 is QT700 piece, and connecting portion 1 adopts QT700 to make promptly for the elastic modulus of planet carrier is higher, and rigidity is great, is difficult for taking place the deformation when receiving external effort. The main shaft 100 is a QT400 piece, namely the main shaft 100 is made of QT400, so that the main shaft 100 is small in elastic modulus and rigidity and easy to deform under external acting force. When the main shaft 100 is sleeved on the connecting portion 1, under the locking action of the locking disc 3, the main shaft 100 is compressed by the locking disc 3 to the direction of the connecting portion 1 to deform, so that the main shaft 100 is compressed on the connecting portion 1, which is beneficial to improving the contact pressure between the main shaft 100 and the connecting portion 1, and thus the torque transmission capability of the planet carrier connecting structure is improved.
In this embodiment, the planet carrier connection structure further includes a supporting member 2, the connection portion 1 is provided with a supporting hole 12, the supporting member 2 is disposed in the supporting hole 12 and supported on an inner wall of the supporting hole 12, so that the connection portion 1 is sandwiched between the main shaft 100 and the supporting member 2, the supporting member 2 is used for supporting the supporting hole 12 of the connection portion 1, the rigidity of the connection portion 1 is further improved, and the connection portion 1 is not easily deformed, thereby ensuring the contact pressure between the main shaft 100 and the connection portion 1.
Preferably, the abutting piece 2 is located at the small diameter section of the step 14 and is opposite to the socket part of the main shaft 100 and the connecting part 1, and the abutting piece 2 is opposite to the socket part of the main shaft 100 and the connecting part 1, so that the socket part of the main shaft 100 and the connecting part 1 is clamped by the locking disc 3 and the abutting piece 2, and further, the contact pressure between the main shaft 100 and the connecting part 1 is ensured. More preferably, the axial length of the abutting piece 2 is equal to the length of the sleeve joint part of the main shaft 100 and the connecting part 1, so that the abutting piece 2 can support the whole sleeve joint part of the main shaft 100 and the connecting part 1, the stability of the contact pressure between the main shaft 100 and the connecting part 1 is ensured, and the stability of the torque transmission between the main shaft 100 and the planet carrier is improved.
In this embodiment, the abutting member 2 is set to be cylindrical, and the peripheral wall surface of the abutting member 2 abuts against the inner wall of the abutting hole 12, so that the abutting area between the abutting member 2 and the abutting hole 12 is increased, the stability of the contact pressure between the main shaft 100 and the connecting portion 1 can be further ensured, and the stability of the torque transmission between the main shaft 100 and the planet carrier is improved.
Preferably, the support member 2 is provided with lightening holes 21, and the lightening holes 21 are through holes, so that part of materials on the support member 2 can be removed, thereby not only facilitating the reduction of the weight of the support member 2, but also reducing the manufacturing cost of the support member 2. Specifically, the central axis of the lightening hole 21 is arranged to coincide with the central axis of the connecting part 1, so that the mass of the holding part 2 can be uniformly distributed around the central axis of the holding part (i.e. the central axis of the connecting part 1), which is beneficial to avoiding the influence on the transmission of torque caused by the generation of uneven moment of inertia. In other embodiments, the lightening holes 21 may also be provided in multiple numbers, and the multiple lightening holes 21 are uniformly distributed on the same circumferential surface with the central axis of the connecting portion 1 as the center, so that the mass of the holding member 2 itself can be uniformly distributed with the central axis of itself (i.e. the central axis of the connecting portion 1) as the center, and the influence on torque transmission due to the generation of non-uniform moment of inertia can also be avoided.
More preferably, the holding member 2 is made of steel, that is, the holding member 2 is made of metal steel, so that the holding member 2 has strong supporting capability. It is understood that the specific type of the steel material used for the holding member 2 is not limited in this embodiment, and those skilled in the art can select the type according to actual needs.
In this embodiment, the locking disk 3 includes an outer disk 31 and an inner disk 32, the outer disk 31 and the inner disk 32 are both configured in a ring shape, the inner disk 32 is slidably disposed on an inner circumferential surface of the outer disk 31, and the inner disk 32 is axially connected to the outer disk 31 by bolts and can axially slide along the inner circumferential surface of the outer disk 31 under the action of the bolts. The cross-sectional shape of the inner disc 32 is wedge-shaped, and when the inner disc 32 is inserted into the inner ring of the outer disc 31 along the axial direction under the action of the bolt, the inner diameter of the locking disc 3 is reduced, so that the locking disc 3 locks and presses the spindle 100, the spindle 100 deforms and presses the connecting part 1, contact pressure is generated between the spindle 100 and the connecting part 1, and connection is achieved, and finally torque transmission between the spindle 100 and the planet carrier is achieved.
Preferably, the inner disc 32 is provided with a connecting platform 321, and the connecting platform 321 is axially connected to the end surface of the outer disc 31 through a bolt, so that the inner disc 32 can slide in the axial direction under the action of the connecting platform 321 and the bolt to be inserted into the inner ring of the outer disc 31, so that the locking disc 3 locks and presses the spindle 100, and a locking function is realized.
More preferably, the inner ring surface of the outer disc 31 is set to be an inclined surface and is parallel to the wedge surface of the inner disc 32, which is beneficial to avoiding a gap between the inner disc 32 and the outer disc 31 when the inner disc 32 is inserted into the inner ring of the outer disc 31, and is beneficial to improving the locking strength of the locking disc 3.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A carrier connection structure for connecting a carrier and a main shaft (100), comprising:
the connecting part (1) is arranged on the planet carrier, a connecting hole (101) is formed in the main shaft (100), the main shaft (100) is sleeved on the connecting part (1) through the connecting hole (101), and the elastic modulus of the main shaft (100) is smaller than that of the connecting part (1);
the connecting part (1) is provided with a butting hole (12), the butting part (2) is arranged in the butting hole (12) and butts against the inner wall of the butting hole (12), and the connecting part (1) is clamped between the main shaft (100) and the butting part (2);
the locking disc (3) is sleeved on the main shaft (100) and extrudes the main shaft (100) to the connecting part (1).
2. The planet carrier connecting structure according to claim 1, wherein a plurality of axial grooves (102) are formed in a sleeved portion of the main shaft (100) and the connecting portion (1), and the plurality of axial grooves (102) are uniformly distributed at equal intervals along the circumferential direction of the main shaft (100).
3. The planet carrier connecting structure according to claim 1, wherein a step (14) is formed on an outer circumferential wall surface of the connecting portion (1), and the connecting hole (101) is sleeved on a small diameter section of the step (14).
4. The planet carrier connecting structure according to claim 3, wherein the holding member (2) is located at the small diameter section of the step (14) and faces the socket portion of the main shaft (100) and the connecting portion (1).
5. Planet carrier connection according to claim 1, characterised in that the axial length of the retaining member (2) is equal to the length of the socket part of the spindle (100) and the connection part (1).
6. The planet carrier connection structure according to claim 1, wherein the holding member (2) is provided in a cylindrical shape, and an outer peripheral wall surface of the holding member (2) is held against an inner wall of the holding hole (12).
7. The planet carrier connection structure according to claim 1, wherein the retainer (2) is provided with a lightening hole (21), and a central axis of the lightening hole (21) is arranged to coincide with a central axis of the connecting portion (1).
8. The planet carrier connection structure according to claim 1, wherein the locking disk (3) comprises an outer disk (31) and an inner disk (32), the inner disk (32) is axially slidably disposed on an inner ring surface of the outer disk (31), and the cross-sectional shape of the inner disk (32) is wedge-shaped, and when the inner disk (32) is inserted between the outer disk (31) and the main shaft (100), the locking disk (3) can press and lock the main shaft (100).
9. The planet carrier connection according to claim 8, characterized in that the inner ring surface of the outer disc (31) is provided as a ramp and is parallel to the wedge surface of the inner disc (32).
10. The planet carrier connection structure according to claim 8, wherein the inner disc (32) is provided with a connection table (321), and the connection table (321) is axially connected to the end surface of the outer disc (31) through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021762674.2U CN212839334U (en) | 2020-08-21 | 2020-08-21 | Planet carrier connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021762674.2U CN212839334U (en) | 2020-08-21 | 2020-08-21 | Planet carrier connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212839334U true CN212839334U (en) | 2021-03-30 |
Family
ID=75138057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021762674.2U Active CN212839334U (en) | 2020-08-21 | 2020-08-21 | Planet carrier connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212839334U (en) |
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2020
- 2020-08-21 CN CN202021762674.2U patent/CN212839334U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230207 Granted publication date: 20210330 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230327 Granted publication date: 20210330 |