CN216447398U - Gear box input part damage recycling structure for variable pitch system - Google Patents
Gear box input part damage recycling structure for variable pitch system Download PDFInfo
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- CN216447398U CN216447398U CN202120790761.7U CN202120790761U CN216447398U CN 216447398 U CN216447398 U CN 216447398U CN 202120790761 U CN202120790761 U CN 202120790761U CN 216447398 U CN216447398 U CN 216447398U
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- mounting hole
- connecting column
- key groove
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Abstract
The utility model provides a gear box input part damage recycling structure for a variable pitch system, which comprises: a motor shaft; the center of the end face of the connecting column, which is far away from the gear shaft, is provided with a motor shaft mounting hole; and n parallel keys for making spliced pole and motor shaft link, wherein, be equipped with on the part except that the damage motor shaft keyway of the lateral wall of the free tip of motor shaft along the circumference interval arrangement of motor shaft and with n restoration motor shaft keyways of n parallel key one-to-one, be equipped with on the part except that the damage mounting hole keyway of the inner wall of motor shaft mounting hole along the circumference interval arrangement of motor shaft mounting hole and restore the mounting hole keyway with n corresponding n of restoration motor shaft keyways respectively, when free tip inserts to the motor shaft mounting hole in, two lateral parts of parallel key inlay respectively and establish in corresponding restoration motor shaft keyway and restoration mounting hole keyway.
Description
Technical Field
The utility model belongs to the technical field of recycling of damage of an input part of a gear box, and particularly relates to a recycling structure of damage of the input part of the gear box for a variable pitch system.
Background
The variable pitch system comprises a pitch blade and a variable pitch driving device for driving the pitch blade to rotate, wherein the variable pitch driving device comprises a motor, a gear box and a gear box input part. The gear box input part is usually connected with a gear shaft of a driving gear in the gear box and a motor shaft of a motor by adopting a connecting column and a flat key so as to transmit the torque of the motor to the gear box, and key grooves matched with the flat key are respectively arranged on the outer surface of the motor shaft and the inner wall of a motor shaft mounting hole of the connecting column.
Under the ideal condition of wind conditions, the impact load of the variable pitch system is large in size and cycle times, and the variable pitch angle and the variable pitch frequency are high. Due to the fact that the pitch is changed very frequently on site, the weak part of the flat key connection is failed. From a photograph of the failure collected in the field, it was first the keyway on the motor shaft and/or the keyway in the connecting stud that failed, resulting in a total connection failure. For this reason, the motor and the gear box need to be replaced integrally, which is very costly.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a damaged and reused structure of an input portion of a gear box for a pitch system, which can repair and reuse the damaged structure of the input portion of the gear box, and which has a simple structure, low cost, and high reliability.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a gear box input part damage recycling structure for a variable pitch system, which is used for connecting a driving gear in a gear box with a motor main body and has the characteristics that: the motor shaft is fixedly connected with the rotor of the motor main body, and the side wall of the free end part is provided with a damaged key groove which extends along the axial direction of the motor shaft and is used as a damaged motor shaft key groove; the connecting column is coaxially and fixedly connected with a gear shaft of the driving gear, a blind hole which extends along the axial direction of the connecting column and is matched with the free end part is arranged at the central position far away from the end surface of the gear shaft to be used as a motor shaft mounting hole, and a damaged key groove which extends along the axial direction of the connecting column and is used as a damaged mounting hole key groove is arranged on the inner wall of the motor shaft mounting hole; and n flat keys for connecting the connecting column and the motor shaft, wherein n key grooves which are arranged at intervals along the circumferential direction of the motor shaft and correspond to the n flat keys one by one are arranged on the part of the side wall of the free end part except for the damaged motor shaft key groove and are used as the key grooves for repairing the motor shaft key groove, n key grooves which are arranged at intervals along the circumferential direction of the motor shaft mounting hole and correspond to the n repaired motor shaft key grooves respectively are arranged on the part of the inner wall of the motor shaft mounting hole except for the damaged mounting hole key groove and are used as the key grooves for repairing the mounting hole key groove, the repaired motor shaft key groove and the corresponding repaired mounting hole key groove are matched with the corresponding flat keys in shape, when the free end part is inserted into the motor shaft mounting hole, two side parts of the flat keys are respectively embedded in the corresponding repaired motor shaft key groove and the repaired mounting hole key groove, and n is a positive integer not less than 2.
The input damage recycling structure of the gearbox for the variable pitch system provided by the utility model can also have the following characteristics: wherein, the connecting column and the gear shaft are integrally formed.
The input damage recycling structure of the gearbox for the variable pitch system provided by the utility model can also have the following characteristics: further comprising: the mounting seat is used for mounting the motor main body on the box body of the gear box, wherein the mounting seat is provided with a through hole matched with the connecting column as a connecting column mounting through hole, and the connecting column is rotatably mounted in the connecting column mounting through hole.
In the gear box input part damage recycling structure for the variable pitch system, the utility model also has the following characteristics: wherein, a bearing is arranged between the connecting column and the connecting column mounting through hole.
In the gear box input part damage recycling structure for the variable pitch system, the utility model also has the following characteristics: wherein, still be equipped with the sealing washer between spliced pole and the spliced pole installation through-hole.
In the gear box input part damage recycling structure for the variable pitch system, the utility model also has the following characteristics: and the flat key and the corresponding repair motor shaft key groove as well as the flat key and the corresponding repair mounting hole key groove are in interference fit.
In the gear box input part damage recycling structure for the variable pitch system, the utility model also has the following characteristics: the width tolerance range and the depth tolerance range of the repaired motor shaft key groove are respectively [ -0.051, -0.015], [0, +0.20], and the width tolerance range and the depth tolerance range of the repaired mounting hole key groove are respectively [ -0.051, -0.015], [0, +0.20 ].
In the gear box input part damage recycling structure for the variable pitch system, the utility model also has the following characteristics: the n repaired motor shaft key grooves are arranged at equal intervals along the circumferential direction of the motor shaft, and the n modified mounting hole key grooves are arranged at equal intervals along the circumferential direction of the motor shaft mounting hole.
In the gear box input part damage recycling structure for the variable pitch system, the utility model also has the following characteristics: the repair mounting hole key groove extends from the end face, away from the gear shaft, of the motor shaft mounting hole in the direction towards the gear shaft.
Action and effect of the utility model
According to the gear box input part damage recycling structure for the variable pitch system, because the gear box input part damage recycling structure is provided with n flat keys, n key grooves which are arranged at intervals along the circumferential direction of a motor shaft and correspond to the n flat keys one by one are arranged on the part of the side wall of the free end part of the motor shaft except for the damaged motor shaft key groove, n key grooves which are used as repairing motor shaft key grooves are arranged at intervals along the circumferential direction of a motor shaft mounting hole and correspond to the n repairing motor shaft key grooves respectively, are arranged on the part of the inner wall of a motor shaft mounting hole of a connecting column except for the damaged mounting hole key groove, the repairing motor shaft key groove and the corresponding repairing mounting hole key groove are matched with the shapes of the corresponding flat keys, when the free end part is inserted into the motor shaft mounting hole, two side parts of the flat keys are respectively embedded in the corresponding repairing motor shaft key groove and the repairing mounting hole key groove, therefore, the utility model can repair and reuse the damaged input part structure of the gear box, and has simple structure, low cost and high reliability.
Drawings
FIG. 1 is an exploded installation schematic view of a gearbox input damage reuse structure for a pitch system in an embodiment of the present invention;
FIG. 2 is a perspective view of a motor shaft in an embodiment of the present invention; and
fig. 3 is a schematic perspective view of a connecting column according to an embodiment of the present invention.
Detailed Description
The concept, specific structure and technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the input damage recycling structure of the gear box for the pitch system of the present invention.
< example >
FIG. 1 is an exploded view of a gearbox input damage reuse structure for a pitch system according to an embodiment of the present invention.
As shown in fig. 1, in the present embodiment, a damaged and reused structure 100 of a gearbox input part for a pitch system is modified based on an original damaged and failed structure of the gearbox input part, and is used for connecting a driving gear 200 in the gearbox with a motor main body 300. The damage recycling structure 100 for the input part of the gearbox for the pitch control system comprises a motor shaft 10, a connecting column 20, two flat keys 30, a mounting seat 40, a bearing 50, a bearing clamping ring 60, two sealing rings 70 and a sealing ring clamping ring 80.
Fig. 2 is a perspective view of a motor shaft according to an embodiment of the present invention.
As shown in fig. 1 and 2, one end of the motor shaft 10 is fixedly connected to a rotor (not shown) of the motor body 300, and the other end is a free end. The side wall of the free end part is provided with a damaged motor shaft key groove 11 which extends along the axial direction of the motor shaft 10 and is damaged; two repaired motor shaft key grooves 12 which are arranged at equal intervals along the circumferential direction of the motor shaft 10 and correspond to the two flat keys 30 one by one are arranged on the part of the side wall of the free end part except for the damaged motor shaft key groove 11, that is, the two repaired motor shaft key grooves 12 are symmetrically arranged on the part of the side wall of the free end part except for the damaged motor shaft key groove 11; the repaired motor shaft keyway 12 matches the shape of the corresponding flat key 30.
Fig. 3 is a schematic perspective view of a connecting column according to an embodiment of the present invention.
As shown in fig. 1 and 3, the connecting column 20 is coaxially and fixedly connected with a gear shaft 201 of the driving gear 200, and is used for connecting the gear shaft 201 with the motor shaft 10. In the present embodiment, the connecting column 20 and the gear shaft 201 are integrally formed. Of course, the connecting column 20 and the gear shaft 201 may also be fixedly connected by welding or the like according to actual requirements.
The center position of the end face of the connecting column 20 away from the gear shaft 201 has a blind hole as a motor shaft mounting hole 21 extending in the axial direction of the connecting column 20 and matching with the free end of the motor shaft 10. The inner wall of the motor shaft mounting hole 21 is provided with a damaged mounting hole key groove 22 which extends along the axial direction of the connecting column 20 and is damaged; two repairing mounting hole key grooves 23 which are arranged at equal intervals along the circumferential direction of the motor shaft mounting hole 21 and respectively correspond to the two repairing motor shaft key grooves 12 are arranged on the part of the inner wall of the motor shaft mounting hole 21 except the damaged mounting hole key groove 22, namely, the two repairing mounting hole key grooves 23 are symmetrically arranged on the part of the inner wall of the motor shaft mounting hole 21 except the damaged mounting hole key groove 22; the repair mounting hole key slot 23 matches the shape of the corresponding flat key 30. In the present embodiment, the repair mounting hole key groove 23 extends from the end surface of the connection post 20 away from the gear shaft 20 in the direction toward the gear shaft 20.
The end part of the connecting column 20 close to the gear shaft 201 is provided with an annular flange 24; the connecting column 20 is provided at its middle with an annular groove 25.
As shown in fig. 1, two flat keys 30 are used to couple the connecting post 20 and the motor shaft 10. When the free end of the motor shaft 10 is inserted into the motor shaft mounting hole 21 of the connection column 20, two side portions of the flat key 30 are respectively embedded in the corresponding repair motor shaft key groove 12 and repair mounting hole key groove 23.
In this embodiment, the flat key 30 and the corresponding repaired motor shaft keyway 12, and the flat key 30 and the corresponding repaired mounting hole keyway 23 are all interference fits. The width tolerance range and the depth tolerance range of the repaired motor shaft key groove 12 are respectively [ -0.051, -0.015], [0, +0.20 ]; the width tolerance range and the depth tolerance range of the repaired mounting hole key groove 23 are [ -0.051, -0.015], [0, +0.20], respectively.
As shown in fig. 1, the mounting seat 40 is used to mount the motor main body 300 on the box body of the gear box, and both end portions thereof are detachably connected with the motor main body 300 and the box body, respectively, in a bolt connection manner. The mounting seat 40 is provided at a central position thereof with a coupling post mounting through hole 41 matching with the coupling post 20, and the coupling post 20 is rotatably mounted in the coupling post mounting through hole 41.
As shown in fig. 1, the bearing 50 is located between the connection post 20 and the inner wall of the connection post mounting through hole 41 and is sleeved on the outer surface of the connection post 20, so that the connection post 20 is rotatably mounted in the connection post mounting through hole 41. In this embodiment, the bearing 50 is disposed on the outer surface of the connecting column 20 between the annular flange 24 and the annular groove 25.
As shown in fig. 1, the bearing snap ring 60 is inserted into the annular groove 25 of the connection column 20, thereby limiting the position of the bearing 50 to prevent the bearing 50 from moving in the axial direction of the connection column 20.
As shown in fig. 1, two sealing rings 70 are sequentially sleeved on the outer surface of the connecting column 20 along the axial direction of the connecting column 20. In this embodiment, the connecting column 20 is sleeved by the sealing ring 70 between the annular flange 25 and the end surface far away from the gear shaft 201.
As shown in fig. 1, the sealing ring snap ring 80 is sleeved on the connecting column 20 for limiting the sealing ring 70 to prevent the sealing ring 70 from moving along the axial direction of the connecting column 20.
In this embodiment, the method for recycling the damaged and failed gearbox input part mounting structure by using the gearbox input part mounting damage recycling structure 100 for the pitch system comprises the following steps:
in step S1, the damaged and failed input structure of the gear case, the drive gear 200 and the motor body 300 are removed from the gear case.
Step S2, the motor shaft 10 and the connecting column 20 are detached and separated.
In step S3, two flat keys 30 of a certain size are machined based on the size of the motor shaft 10 and according to a preset tolerance range of the flat keys. In the present embodiment, the flat key 30 is required to satisfy the requirements of GB1096-2003 "Normal type flat key".
Step S4, according to the size of the flat key 30 and according to the preset key groove tolerance range, two repaired motor shaft key grooves are machined on the portion of the side wall of the free end portion of the motor shaft 10 other than the damaged motor shaft key groove 11 at equal intervals in the circumferential direction of the motor shaft, and two repaired mounting hole key grooves 23 are machined on the portion of the motor shaft mounting hole 21 of the connection post 20 other than the damaged mounting hole key groove 22 at equal intervals in the circumferential direction of the motor shaft mounting hole 21. In this embodiment, the repaired motor shaft keyway 11 and the repaired mounting hole keyway 23 are required to meet the requirements of GB/T1095-2003 "Cross-sectional dimensions of Flat Key keyway".
In step S5, one side portions of the two flat keys 30 are respectively fitted into the two repaired motor shaft key grooves 11.
Step S6, after aligning the two repaired motor shaft key grooves 12 with the two repaired mounting hole key grooves 23 one by one, inserting the free end of the motor shaft 10 into the motor shaft mounting hole 21; meanwhile, the other side portion of the flat key 30 is fitted into the corresponding repair mounting hole key groove 23, thereby completing the gearbox input portion mounting damage reuse structure 100.
And step S7, re-installing the damaged and recycled structure 100 of the input part of the gearbox, the driving gear 200 and the motor main body 300 on the box body of the gearbox, and installing the gearbox on a fan hub of a pitch system, so as to finish the work of repairing and recycling the damaged and failed input part of the gearbox.
Effects and effects of the embodiments
According to the gear box input part damage recycling structure for the variable pitch system, as the structure is provided with n flat keys, n key grooves which are arranged at intervals along the circumferential direction of the motor shaft and correspond to the n flat keys one by one are arranged on the part of the side wall of the free end part of the motor shaft except for the damaged motor shaft key groove, n key grooves which are used as repairing motor shaft key grooves and are arranged at intervals along the circumferential direction of the motor shaft mounting hole and correspond to the n repairing motor shaft key grooves respectively are arranged on the part of the inner wall of the motor shaft mounting hole of the connecting column except for the damaged mounting hole key groove, the repairing motor shaft key groove and the corresponding repairing mounting hole key groove are matched with the corresponding flat keys in shape, when the free end part is inserted into the motor shaft mounting hole, two side parts of the flat keys are respectively embedded in the corresponding repairing motor shaft key groove and the repairing mounting hole key groove, therefore, the connection between the connecting column and the motor shaft is realized, the damaged input part structure of the gear box can be repaired and reused in the embodiment, and the gear box is simple in structure, low in cost and high in reliability.
In addition, because the connecting column and the gear shaft are integrally formed, the structure is firm and firm, and the coaxial precision is higher.
In addition, because still have the mount pad, can install the motor main part on the box of gear box for motor and box integration, the installation of being convenient for.
In addition, because the mounting seat is provided with the connecting column mounting through hole matched with the connecting column, and the connecting column is rotatably mounted in the connecting column mounting through hole through the bearing, the connecting column is more stable to rotate, and the structure of the input part is more compact.
In addition, because be interference fit between parallel key and the restoration motor shaft keyway that corresponds and parallel key and the restoration mounting hole keyway that corresponds for the hookup between spliced pole and the motor shaft is more firm.
In addition, because n restoration motor shaft keyway is arranged along the circumference of motor shaft equidistant, n revises mounting hole keyway and arranges along the circumference equidistant of motor shaft mounting hole for the connection between spliced pole and the motor shaft is more firm.
In addition, because the terminal surface that restores the mounting hole keyway and keep away from the gear shaft from the spliced pole begins to extend along the direction towards the gear shaft, simple structure easily processes, changes in installation and dismantlement.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
For example, in the above embodiment, two flat keys are used to realize the connection between the connecting column and the motor shaft, and the inner wall of the motor shaft installation through hole in the connecting column and the outer surface of the motor shaft are respectively provided with a key groove matched with the two flat keys. However, in the present invention, 3, 4 or more flat keys may be used to couple the connection post and the motor shaft, in which case a corresponding number of key grooves are provided on the inner wall of the motor shaft mounting through-hole in the connection post and the outer surface of the motor shaft, respectively.
Claims (9)
1. The utility model provides a gear box input portion dress damage reuse structure that becomes oar system and use for be connected driving gear and motor main part in the gear box, its characterized in that includes:
the motor shaft is fixedly connected with the rotor of the motor main body, and a damaged key groove which extends along the axial direction of the motor shaft and is used as a damaged motor shaft key groove is formed in the side wall of the free end part;
the connecting column is coaxially and fixedly connected with a gear shaft of the driving gear, a blind hole which extends along the axial direction of the connecting column and is matched with the free end part is arranged in the center of the end surface far away from the gear shaft to be used as a motor shaft mounting hole, and a damaged key groove which extends along the axial direction of the connecting column and is used as a damaged mounting hole key groove is arranged on the inner wall of the motor shaft mounting hole; and
n flat keys for connecting the connecting column and the motor shaft,
wherein, the part of the side wall of the free end part except the damaged motor shaft key groove is provided with n key grooves which are arranged at intervals along the circumferential direction of the motor shaft and are in one-to-one correspondence with the n flat keys and used for repairing the key grooves of the motor shaft,
n key grooves which are arranged along the circumferential direction of the motor shaft mounting hole at intervals and are respectively corresponding to the n repaired motor shaft key grooves are arranged on the part of the inner wall of the motor shaft mounting hole except the damaged mounting hole key groove,
the repaired motor shaft key groove and the corresponding repaired mounting hole key groove are matched with the corresponding flat key in shape,
when the free end part is inserted into the motor shaft mounting hole, two side parts of the flat key are respectively embedded in the corresponding repaired motor shaft key groove and the repaired mounting hole key groove,
and n is a positive integer not less than 2.
2. The input damage recycling structure of a gearbox for a pitch system according to claim 1, wherein:
the connecting column and the gear shaft are integrally formed.
3. The gearbox input damage reuse structure for a pitch system according to claim 1, further comprising:
the mounting seat is used for mounting the motor main body on the box body of the gear box,
wherein the mounting seat is provided with a through hole matched with the connecting column as a connecting column mounting through hole,
the connecting column is rotatably mounted in the connecting column mounting through hole.
4. The gearbox input damage recycling structure for a pitch system according to claim 3, wherein:
and a bearing is arranged between the connecting column and the connecting column mounting through hole.
5. A gearbox input damage reuse structure for a pitch system according to claim 3 or 4, characterized in that:
and a sealing ring is also arranged between the connecting column and the connecting column mounting through hole.
6. The gearbox input damage recycling structure for the pitch system according to claim 1, wherein:
and the flat key and the corresponding repair motor shaft key groove as well as the flat key and the corresponding repair mounting hole key groove are in interference fit.
7. The gearbox input damage recycling structure for a pitch system according to claim 6, wherein:
wherein, the width tolerance range and the depth tolerance range of the repaired motor shaft key groove are respectively [ -0.051, -0.015], [0, +0.20],
the width tolerance range and the depth tolerance range of the key groove of the repair mounting hole are respectively [ -0.051, -0.015], [0, +0.20 ].
8. The gearbox input damage recycling structure for the pitch system according to claim 1, wherein:
wherein the n repaired motor shaft keyways are arranged at equal intervals along the circumference of the motor shaft,
and the n repaired mounting hole key grooves are arranged at equal intervals along the circumferential direction of the motor shaft mounting hole.
9. The gearbox input damage recycling structure for the pitch system according to claim 1, wherein:
the repair mounting hole key groove extends from the end face, far away from the gear shaft, of the connecting column along the direction towards the gear shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790761.7U CN216447398U (en) | 2021-04-19 | 2021-04-19 | Gear box input part damage recycling structure for variable pitch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790761.7U CN216447398U (en) | 2021-04-19 | 2021-04-19 | Gear box input part damage recycling structure for variable pitch system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216447398U true CN216447398U (en) | 2022-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120790761.7U Active CN216447398U (en) | 2021-04-19 | 2021-04-19 | Gear box input part damage recycling structure for variable pitch system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216447398U (en) |
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2021
- 2021-04-19 CN CN202120790761.7U patent/CN216447398U/en active Active
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