CN217518794U - Main shaft and hub connecting device of wind driven generator and wind driven generator comprising same - Google Patents
Main shaft and hub connecting device of wind driven generator and wind driven generator comprising same Download PDFInfo
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- CN217518794U CN217518794U CN202221898202.9U CN202221898202U CN217518794U CN 217518794 U CN217518794 U CN 217518794U CN 202221898202 U CN202221898202 U CN 202221898202U CN 217518794 U CN217518794 U CN 217518794U
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- main shaft
- hub
- conical surface
- wind power
- mounting
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Abstract
The utility model discloses a aerogenerator's main shaft and wheel hub connecting device and contain its aerogenerator, aerogenerator's main shaft and wheel hub connecting device includes wheel hub, the main shaft, main shaft one end is equipped with the first conical surface, the first conical surface extends along the main shaft radial inward, wheel hub one side is equipped with the second conical surface, make first conical surface and second conical surface set up relatively, wheel hub and main shaft rigid connection, wheel hub and main shaft set up relatively through first conical surface and second conical surface, wheel hub and main shaft pass through the conical surface cooperation, because the first conical surface extends along the main shaft radial inward, conical surface cooperation contact surface is bigger, under the prerequisite of guaranteeing joint strength, reduce the volume of junction; compared with a horn mouth connector in the prior art, the position from the bearing to the center of the hub, namely a load point, is shortened, the load of the bearing is reduced, and the service life is prolonged; the main shaft can be designed with smaller span, thereby reducing the length of the driving chain and the whole engine room, and obviously reducing the cost.
Description
Technical Field
The utility model relates to a aerogenerator correlation field, in particular to aerogenerator's main shaft and wheel hub connecting device and contain its aerogenerator.
Background
The existing wind driven generator drives blades to rotate through wind power, the blades are fastened with a hub, the hub is connected with a main shaft, and then power is transmitted to the generator through an intermediate link to generate electric energy. The hub is directly connected with the spindle, the hub is attached to the end face of the spindle in the conventional common connection mode, the hub and the spindle are connected together in a bolt connection mode, corresponding torque is borne by the connecting bolt, the requirement on the strength of the bolt is high, the bolt needs are many, the spindle is in a horn mouth amplification mode, and sufficient bolt hole arrangement is met.
In the prior art, due to the adoption of the bell mouth design, the front bearing is increased to the center of the hub, namely the position of a load point, so that the load of the front bearing and the load of the rear bearing are increased, the requirement on the bearing is further increased, and the cost is increased and the failure rate of the bearing is increased.
The existing connection mode adopts a large number of bolt and nut gasket assemblies, so that the cost is increased, and the installation and operation and maintenance costs are increased.
Due to the adoption of the bell mouth design, the diameter of the wind wheel locking disc is increased, integration is not facilitated, and the cost of the material is increased.
The increased bearing loads result in a larger span to be considered in the design of the main shaft, increasing the length of the main shaft, which in turn increases the length of the drive chain and the entire nacelle, resulting in increased costs.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the first technical problem that solves adopts the horn mouth in order to overcome among the prior art aerogenerator main shaft and wheel hub's connection structure, leads to the load point to increase to bring the bearing failure rate and rise, the cost increases, the short-lived defect.
The utility model discloses the technical scheme that first technical problem adopted provides a aerogenerator's main shaft and wheel hub connecting device, including wheel hub, main shaft one end is equipped with first conical surface, first conical surface is followed the radial inward extension of main shaft, wheel hub one side is equipped with the second conical surface, makes first conical surface with the second conical surface sets up relatively, wheel hub with main shaft rigid connection.
In the scheme, the hub and the main shaft are oppositely arranged through the first conical surface and the second conical surface, and the hub and the main shaft are matched through the conical surfaces, so that the self-centering positioning device has the advantages of self-centering, high positioning precision, good self-locking property and capability of transmitting large torque; the first conical surface extends inwards along the radial direction of the main shaft, and the matching contact surface of the conical surface is larger, so that the volume of the connecting part is reduced on the premise of ensuring the connecting strength, the using amount of the bolt assemblies for rigid connection is reduced, the cost is reduced, and the disassembly and the maintenance are convenient; compared with a horn mouth connector in the prior art, the length of a connecting part is reduced along the axial direction of a main shaft, the position from a bearing to the center of a hub, namely a load point, is shortened, the load of the bearing is reduced, and the service life is prolonged; the bearing load is reduced, the main shaft can be designed to have smaller span, the length of a driving chain and the whole engine room is further reduced, and the cost is obviously reduced.
Preferably, an installation protrusion and an installation groove are arranged between the main shaft and the hub, the installation protrusion is installed in the installation groove, the installation protrusion is provided with the first conical surface, the installation groove is provided with the second conical surface, and the installation protrusion is provided with an installation end surface.
In this scheme, main shaft and wheel hub couple together through installation arch and mounting groove cooperation, and installation arch and mounting groove are the carrier that first conical surface and second conical surface mutually supported.
Preferably, the mounting protrusion is disposed at one end of the main shaft, the mounting groove is disposed at one side of the hub, and an outer diameter of the mounting protrusion extends inward in a radial direction of the main shaft.
In this scheme, the mounting groove sets up in wheel hub one side, can reduce wheel hub's weight, conveniently dismantles and maintains the wheel hub, and the protruding external diameter of installation extends inwards, has reduced the bellied volume of installation, has reduced the bolt assembly use quantity that is used for fixed mounting arch and mounting groove, convenient maintenance, reduce cost.
Preferably, the mounting projection extends in an axial direction of the main shaft.
In this scheme, the protruding main shaft axial extension of following of installation, on the one hand, strengthens the intensity of installing protruding itself, and on the other hand can increase first conical surface and second conical surface complex area, increases the joint strength between wheel hub and the main shaft.
Preferably, a tensioning sleeve is arranged between the hub and the main shaft and provides clamping force for the mounting protrusion and the mounting groove.
In this scheme, the use of tight cover that rises provides powerful locking force for the combination between installation arch and the mounting groove, through its pressure that produces between installation arch and mounting groove and the frictional force that accompanies it, transmission moment of torsion, load, when the load overloads, protection installation arch and mounting groove do not receive the damage, and the change is dismantled to the convenience.
Preferably, the tensioning sleeve is mounted on the conical surface between the mounting protrusion and the mounting groove or on the mounting end surface.
In the scheme, the tensioning sleeve is arranged on the conical surface between the mounting protrusion and the mounting groove and is used for enhancing the binding force of the first conical surface and the second conical surface; the tensioning sleeve is arranged on the mounting end face of the mounting protrusion and used for enhancing the axial binding force of the mounting protrusion and the mounting groove.
Preferably, a wind wheel locking disc is arranged between the main shaft and the hub, and the wind wheel locking disc and the main shaft or the hub are integrally machined.
In the scheme, the wind wheel locking disc and the main shaft or the hub are integrally processed, so that the using number of bolt assemblies can be greatly reduced, the connecting strength of the wind wheel locking disc is greatly improved, and the maintenance cost is reduced; the distance from the bearing to the center of the hub, namely the load center, is reduced, the span of the main shaft is reduced, and the volumes of the main shaft of the fan and the cabin are reduced.
Preferably, a key and/or pin is provided between the hub and the spindle, the key and/or pin limiting the rotation of the hub relative to the spindle axis.
In this solution, keys and/or pins are provided between the hub and the spindle, connecting the hub and the spindle for carrying torque.
Preferably, a fastening assembly is arranged between the hub and the spindle.
In this aspect, the fasteners include, but are not limited to, bolt assemblies for rigidly connecting the hubcap and the spindle.
The utility model discloses the second technical problem that solve is with above-mentioned technical scheme be applied to in the wind-force discharge machine to a aerogenerator is provided.
The utility model discloses the technical scheme that second technical problem adopted does: the wind driven generator comprises a main shaft and hub connecting device of the wind driven generator.
In the scheme, the connecting structure of the main shaft and the hub is used for the wind power discharge machine, so that the load of the joint of the main shaft and the hub of the wind power discharge machine is reduced, the cost is reduced, and the service life of the wind power discharge machine is prolonged on the premise of providing enough connecting strength of the main shaft and the hub of the wind power discharge machine.
On the basis of meeting the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: the hub and the main shaft are oppositely arranged through the first conical surface and the second conical surface, and the hub and the main shaft are matched through the conical surfaces, so that the self-centering device has the advantages of self-centering, high positioning precision, good self-locking property and capability of transmitting large torque; the first conical surface extends inwards along the radial direction of the main shaft, and the matching contact surface of the conical surface is larger, so that the volume of the connecting part is reduced on the premise of ensuring the connecting strength, the using amount of the bolt assemblies for rigid connection is reduced, the cost is reduced, and the disassembly and the maintenance are convenient; compared with a horn mouth connector in the prior art, the length of a connecting part is reduced along the axial direction of a main shaft, the position from a bearing to the center of a hub, namely a load point, is shortened, the load of the bearing is reduced, and the service life is prolonged; the bearing load is reduced, the main shaft can be designed to have smaller span, the length of a driving chain and the whole engine room is further reduced, and the cost is obviously reduced.
Drawings
Fig. 1 is a schematic structural diagram of the wind power generator of the present invention.
Fig. 2 is a schematic structural view of the connection device for the main shaft and the hub of the wind driven generator of the present invention.
Fig. 3 is a schematic view of the structure of fig. 2 with the spindle separated from the hub.
Fig. 4 is an enlarged schematic view of a point a in fig. 3.
Fig. 5 is a schematic structural view of an embodiment of the present invention using a tension sleeve.
Fig. 6 is a schematic structural view of the second embodiment of the present invention using the tension sleeve.
Fig. 7 is a schematic structural diagram of a first embodiment of the wind wheel locking disk integrated processing of the present invention.
Fig. 8 is a schematic structural view of a second embodiment of the wind wheel locking disk integrated processing of the present invention.
Description of the reference numerals:
First tapered surface 12
Second conical surface 13
Tensioning sleeve 16
Wind wheel locking disk 17
Fastening assembly 18
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
Fig. 2 to 8 show that the utility model discloses an embodiment of aerogenerator's main shaft and wheel hub connecting device, including wheel hub 10 and main shaft 11, main shaft 11 one end is equipped with first conical surface 12, and first conical surface 12 is along the radial inward extension of main shaft 11, and wheel hub 10 one side is equipped with second conical surface 13, makes first conical surface 12 and second conical surface 13 set up relatively, wheel hub 10 and main shaft 11 rigid connection.
In this example, the hub 10 and the spindle 11 are oppositely arranged through the first conical surface 12 and the second conical surface 13, and the hub 10 and the spindle 11 are matched through the conical surfaces, so that the self-centering self-locking device has the advantages of self-centering, high positioning accuracy, good self-locking property and capability of transmitting large torque; because the first conical surface 12 extends inwards along the radial direction of the main shaft 11, the matching contact surface of the conical surfaces is larger, the volume of the connecting part is reduced on the premise of ensuring the connecting strength, and the using number of bolt assemblies for rigid connection is reduced, so that the cost is reduced, and the disassembly and the maintenance are convenient; compared with a horn mouth connector in the prior art, the length of a connecting part is reduced along the axial direction of the main shaft 11 by conical surface matching, the position from a bearing to the center of the hub 10, namely a load point, is shortened, the load of the bearing is reduced, and the service life is prolonged; the reduction of the bearing load allows the main shaft 11 to be designed with a smaller span, which in turn reduces the length of the drive train and the entire nacelle, with a significant cost reduction.
As shown in FIG. 4, a mounting protrusion 14 and a mounting groove 15 are arranged between the main shaft 11 and the hub 10, the mounting protrusion 14 is mounted in the mounting groove 15, the mounting protrusion has a first tapered surface 12, the mounting groove 15 has a second tapered surface 13, and the mounting protrusion 14 has a mounting end surface.
In this example, the main shaft 11 and the hub 10 are connected by the fitting protrusion 14 and the fitting groove 15, and the fitting protrusion 14 and the fitting groove 15 are carriers for the first tapered surface 12 and the second tapered surface 13.
Preferably, a mounting protrusion 14 is provided at one end of the main shaft 11, a mounting groove 15 is provided at one side of the hub 10, and an outer diameter of the mounting protrusion 14 extends inward in a radial direction of the main shaft 11.
In this example, the mounting groove 15 is provided on one side of the hub 10, which can reduce the weight of the hub 10, facilitate the disassembly and maintenance of the hub 10, extend inward radially outside the mounting protrusion 14, reduce the volume of the mounting protrusion 14, reduce the number of bolt assemblies for fixing the mounting protrusion 14 and the mounting groove 15, facilitate the maintenance, and reduce the cost.
Preferably, the mounting projection 14 extends in the axial direction of the main shaft 11.
In this example, the mounting protrusion extends axially along the main shaft 11, on one hand, to strengthen the strength of the mounting protrusion 14 itself, and on the other hand, to increase the area of the first tapered surface 12 and the second tapered surface 13, which increases the strength of the connection between the hub 10 and the main shaft 11.
As shown in fig. 5 and 6, a tension sleeve 16 is disposed between the hub 10 and the main shaft 11, and the tension sleeve 16 provides a holding force for the mounting protrusion 14 and the mounting groove 15.
In this example, the use of the tension sleeve 16 provides a strong holding force for the combination between the mounting protrusion 14 and the mounting groove 15, and transmits torque and load through the pressure generated between the mounting protrusion 14 and the mounting groove 15 and the friction force accompanying the same, so as to protect the mounting protrusion 14 and the mounting groove 15 from being damaged when the load is overloaded, and facilitate disassembly and replacement.
Preferably, the tensioning sleeve 16 is mounted on the conical surface or mounting end surface between the mounting projection 14 and the mounting groove 15.
In this example, the tension sleeve 16 is installed on the taper surface between the installation protrusion 14 and the installation groove 15 for enhancing the combining force of the first taper surface 12 and the second taper surface 13; the tensioning sleeve 16 is mounted on the mounting end surface of the mounting protrusion 14 for enhancing the axial combining force of the mounting protrusion 14 and the mounting groove 15.
Fig. 5 is a schematic structural view of an embodiment using the expansion sleeve 16, the expansion sleeve 16 is disposed between the mounting protrusion 14 and the mounting sleeve, and the expansion sleeve 16 is fixed on the mounting protrusion 14 by the fastening assembly 18;
fig. 6 is a schematic structural view showing a second embodiment using the tension sleeve 16, in which the mounting protrusion 14 has an inner groove, the mounting protrusion 14 directly abuts against the side wall of the mounting groove 15, and the tension sleeve 16 is mounted in the inner groove of the mounting protrusion 14.
As shown in fig. 7 and 8, a wind wheel locking disk 17 is disposed between the main shaft 11 and the hub 10, and the wind wheel locking disk 17 is integrally formed with the main shaft 11 or the hub 10.
In the embodiment, the wind wheel locking disc 17 and the main shaft 11 or the hub 10 are integrally processed, so that the using number of bolt assemblies can be greatly reduced, the connecting strength of the wind wheel locking disc 17 is greatly improved, and the maintenance cost is reduced; the distance from the bearing to the center of the hub 10, i.e. the load center, is reduced, the span of the main shaft 11 is reduced, and the volume of the main shaft 11 of the wind turbine and the volume of the engine room are reduced.
As shown in fig. 3, a pin 19 is provided between the hub 10 and the spindle 11, and the pin 19 limits the rotation of the hub 10 relative to the axis of the spindle 11.
In this example, a pin 19 is provided between the hub 10 and the main shaft 11, connecting the hub 10 and the main shaft 11 for carrying torque.
As shown in fig. 4, 5 and 6, a fastening assembly 18 is provided between the hub 10 and the spindle 11.
In this example, the fasteners include, but are not limited to, a bolt assembly for rigidly connecting the hub 10 cover and the spindle 11.
Fig. 1 shows an embodiment of the present invention, which includes a main shaft and a hub connecting device of the wind power generator.
In the embodiment, the main shaft and hub connecting device is used for the wind power discharge machine, and on the premise of providing enough connecting strength between the main shaft 11 and the hub 10 of the wind power discharge machine, the load at the connecting part between the main shaft 11 and the hub 10 is reduced, the cost is reduced, and the service life of the wind power discharge machine is prolonged.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. The utility model provides a aerogenerator's main shaft and wheel hub connecting device, includes wheel hub, main shaft, its characterized in that: the improved spindle is characterized in that a first conical surface is arranged at one end of the spindle, the first conical surface extends inwards along the radial direction of the spindle, a second conical surface is arranged on one side of the hub, the first conical surface and the second conical surface are arranged oppositely, and the hub is rigidly connected with the spindle.
2. The wind power generator main shaft-hub connection device according to claim 1, wherein: the main shaft with be equipped with the installation arch between the wheel hub, the mounting groove, the installation arch is installed in the mounting groove, the installation arch has first conical surface, the mounting groove has second conical surface, the installation arch is equipped with the installation terminal surface.
3. The wind power generator main shaft-hub connection device according to claim 2, wherein: the mounting protrusion is arranged at one end of the main shaft, the mounting groove is arranged on one side of the hub, and the outer diameter of the mounting protrusion extends inwards in the radial direction of the main shaft.
4. The wind power generator main shaft-hub connection device according to claim 2, wherein: the mounting projection extends in the axial direction of the main shaft.
5. The wind power generator main shaft-hub connection device according to claim 2, wherein: and a tensioning sleeve is arranged between the hub and the main shaft and provides clamping force for the mounting protrusion and the mounting groove.
6. The wind power generator main shaft-hub connection device according to claim 5, wherein: the tensioning sleeve is arranged on the conical surface between the mounting protrusion and the mounting groove or on the mounting end surface.
7. The wind power generator main shaft-hub connection device according to claim 1, wherein: and a wind wheel locking disc is arranged between the main shaft and the hub, and the wind wheel locking disc and the main shaft or the hub are integrally processed.
8. The connecting device of a main shaft and a hub of a wind power generator as claimed in claim 1, wherein: a key and/or a pin are arranged between the hub and the spindle, and the key and/or the pin limit the rotation of the hub relative to the spindle axis.
9. The wind power generator main shaft-hub connection device according to claim 1, wherein: and a fastening assembly is arranged between the hub and the main shaft.
10. A wind power generator characterized by: a main shaft to hub connection comprising a wind turbine according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221898202.9U CN217518794U (en) | 2022-07-22 | 2022-07-22 | Main shaft and hub connecting device of wind driven generator and wind driven generator comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221898202.9U CN217518794U (en) | 2022-07-22 | 2022-07-22 | Main shaft and hub connecting device of wind driven generator and wind driven generator comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217518794U true CN217518794U (en) | 2022-09-30 |
Family
ID=83394258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221898202.9U Active CN217518794U (en) | 2022-07-22 | 2022-07-22 | Main shaft and hub connecting device of wind driven generator and wind driven generator comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217518794U (en) |
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2022
- 2022-07-22 CN CN202221898202.9U patent/CN217518794U/en active Active
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