CN214660659U - Bearing drive gear, gear meshing structure and fan - Google Patents

Abstract

The utility model relates to a bearing drive gear, gear engagement structure and fan, including the gear body, the central point of gear body inserts the pivot of fixed setting, and the gear body rotates with the pivot to be connected, and a plurality of first oil ducts have been seted up to the tooth root position of gear body, is equipped with total oil duct in the pivot, total oil duct and a plurality of second oil duct intercommunication that can align with first oil duct, second oil duct are used for setting towards the gear engagement position, adopt the utility model discloses an engagement structure, the grease high-usage.

Description

Bearing drive gear, gear meshing structure and fan

Technical Field

The utility model relates to a wind power generation technical field, concretely relates to bearing drive gear, gear engagement structure and fan.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The pitch bearing of the wind turbine generator adopts an inner tooth type structure, and the yaw bearing adopts an outer tooth type structure. The gears of the pitch control bearing and the yaw bearing are respectively meshed with the pitch control driving gear and the yaw driving gear, and are in open gear transmission. The lubricating device of the wind turbine generator can perform grease lubrication on the running variable pitch bearing gear, the running yaw bearing gear and the driving gear so as to reduce abrasion and ensure normal running and expected service life of the wind turbine generator.

The lubrication mode of the tooth surface is divided into two types: manual smearing and centralized lubrication. The manual smearing mode is that an operation and maintenance engineer regularly checks and manually smears the tooth surface according to experience. The centralized lubrication mode is that an electric lubrication pump is used for providing power to deliver lubricating grease to the small lubrication teeth, and the purpose of lubricating grease on the tooth surface is achieved through the meshing of the small lubrication teeth and the driving gear and the meshing of the driving gear and the bearing gear. The manual smearing mode is low in investment cost, but the later maintenance workload is large, and the maintenance cost is high. Although the mode of grease supply and lubrication of the centralized lubrication system is high in investment cost, the maintenance cost is low, and the application is wide.

At present, the problems that grease falls off from small lubricating teeth and the tooth surfaces of a variable pitch bearing and a yaw bearing are poorly lubricated occur in part of running units. The dropped grease not only pollutes the environment in the engine room, is inconvenient for normal maintenance of the unit, but also influences the working condition of the gear and increases the potential safety hazard.

The centralized lubricating system of the wind turbine generator generally supplies grease to the small lubricating teeth in a timing and quantitative mode, and the effective working range of the tooth surfaces of the pitch bearing and the yaw bearing is small. When the fan runs, the variable-pitch bearing generally performs small-angle blade retracting adjustment actions of 0-15 degrees during power adjustment; the yaw bearing performs yaw action on wind direction when deviating from the wind direction by 15 degrees except for cable untwisting action. Therefore, under the condition that the bearing does not operate for a long time or rotates at a small angle, grease can be accumulated on the small tooth surface to be lubricated, and the small tooth surface is easy to drop, so that the meshing tooth surface is not sufficiently lubricated.

In conclusion, how to efficiently convey grease to the meshing tooth surface and avoid grease falling is a problem to be solved urgently in the industry at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above-mentioned prior art not enough, providing a bearing drive gear, can carry the meshing flank of tooth with the grease by the efficient for the gear is lubricated abundant.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

in a first aspect, the embodiment of the utility model provides a bearing drive gear, including the gear body, the central point of gear body inserts the pivot of fixed setting, and the gear body rotates with the pivot to be connected, and a plurality of first oil ducts have been seted up to the tooth root position of gear body, is equipped with total oil duct in the pivot, total oil duct and a plurality of second oil duct intercommunication that can align with first oil duct, the second oil duct is used for setting towards gear engagement position.

Furthermore, an oil pipe joint is arranged at the end part of the main oil duct and fixedly connected with the rotating shaft, and grease can be added into the main oil duct through the oil pipe joint.

Furthermore, a sealing ring is arranged between the rotating shaft and the gear body.

Furthermore, the part of the rotating shaft extending out of the gear body is fixedly connected with the fixing frame, and the rotating shaft is fixedly arranged through the fixing frame.

Further, the part that the pivot stretches out to the gear body outside is equipped with the shaft shoulder structure, and mount a side end face contacts with the ladder face that the shaft shoulder structure formed, and the mount has passed the round pin axle, and inside the round pin axle stretched into the pivot through the ladder face, the another side terminal surface of mount contacted with the retaining member that is used for preventing the round pin axle from dropping, retaining member and pivot fixed connection.

Furthermore, the locking piece adopts a locking nut, and the locking nut is fixedly connected with the rotating shaft through threads.

Furthermore, one end of the locking nut is in compression contact with the fixing frame, one side of the other end of the locking nut is provided with a check ring, and the check ring is fixedly connected with the rotating shaft and used for preventing the locking nut from loosening and falling.

Furthermore, one end of the second oil duct is communicated with the main oil duct, and the other end of the second oil duct extends to the bottom groove surface of the groove formed in the circumferential surface of the rotating shaft.

In a second aspect, the present invention provides a gear engagement structure, including the first aspect, a bearing driving gear, a gear body meshes with a bearing gear.

Third aspect, the utility model provides a fan is provided with the second aspect gear engagement structure.

Above-mentioned the utility model discloses an embodiment's beneficial effect as follows:

the utility model discloses a gear engagement structure, the second oil duct of pivot sets up towards the meshing position of gear, and the grease that lets in total oil duct can directly reach the meshing position of gear, and the grease high-usage has avoided the grease will pile up the phenomenon that takes place to drop at lubricated denticle flank of tooth, has practiced thrift the cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a sectional view of the whole structure of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of a gear body according to embodiment 1 of the present invention;

FIG. 3 is a sectional view of a gear body according to embodiment 1 of the present invention;

FIG. 4 is a front view of the rotating shaft structure in embodiment 1 of the present invention;

FIG. 5 is a sectional view of the rotating shaft according to embodiment 1 of the present invention;

fig. 6 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 7 is a structural sectional view of embodiment 2 of the present invention;

the oil pump comprises a gear body 1, a first oil channel 1-1, a rotating shaft 2, a main oil channel 2-1, a groove 2-2, a second oil channel 2-3, a fixing frame 3, a pin shaft 4, an oil pipe joint 5, a check ring 6, a locking nut 7, an O-shaped sealing ring 8, a bearing gear 9, a frame 10 and a driving gear box 11.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Just as the introduction of background art, current fan gear flank of tooth lubricating grease low in utilization ratio appears the grease phenomenon of droing easily, to above-mentioned problem, this application has proposed a bearing drive gear.

In an exemplary embodiment 1 of the present application, as shown in fig. 1 to 5, a bearing drive gear includes a gear body 1 having a plurality of teeth, which are not described in detail herein, and which may be a conventional bearing gear structure for a blower.

The central part of the gear body is provided with a blind hole, the gear body is inserted into the rotating shaft 2 through the blind hole arranged at the central part, and the gear body is rotatably connected with the rotating shaft.

Each tooth root position of the gear body is provided with a plurality of holes serving as the first oil ducts 1-1, preferably, each tooth root position is provided with three first oil ducts, and the three first oil ducts are distributed along the axis direction of the gear body.

One end of the first oil duct is communicated with the outer space of the gear body, and the other end of the first oil duct extends to the blind hole in the center of the gear body and is communicated with the inner space of the blind hole.

The central part of the rotating shaft is provided with a blind hole which is coaxial with the rotating shaft and is used as a main oil duct 2-1, the top end of the main oil duct is provided with a threaded section, the rotating shaft is fixedly connected with one end of an oil pipe joint 5 through the threaded end at the top end of the main oil duct, the other end of the oil pipe joint can be connected with a lubricating system, and grease provided by the lubricating system can be fed into the main oil duct through the oil pipe joint.

The shaft surface of the rotating shaft is provided with three grooves 2-2 distributed along the axis direction of the rotating shaft, the positions of the three grooves are matched with the positions of three first oil ducts corresponding to one tooth root, the groove surface at the bottom of each groove is provided with a second oil duct 2-3, the second oil ducts are communicated with the main oil duct, and the rotation of the gear body can align the first oil ducts formed at different tooth root parts with the second oil ducts on the rotating shaft, so that grease in the main oil ducts enters the first oil ducts through the second oil ducts. And then flows out through the first oil passage.

In this embodiment, the pivot is fixed to be set up, and the second oil duct that the pivot was seted up is towards the meshing position of gear body with other gears for grease can directly reach the meshing position of gear through second oil duct and first oil duct, and grease high-usage has avoided grease will pile up the phenomenon that takes place to drop at lubricated small tooth flank of tooth, has practiced thrift the cost.

And a sealing ring is arranged between the rotating shaft and the top of the hole surface of the blind hole formed in the gear body, and the sealing ring adopts an O-shaped sealing ring 8 and is used for preventing grease leakage.

In this embodiment, the part of the rotating shaft extending out of the gear body is fixedly connected with the fixing frame 3, so as to fix the rotating shaft.

Preferably, the outside part of pivot extension to gear body is equipped with the shaft shoulder structure, forms a ladder face, the ladder face contacts with a side end face of the fixed mount that sets up, has passed round pin axle 4 in the mount, and inside the hole of seting up through the ladder face inserted the pivot, utilized the round pin axle to realize the fixed of pivot and mount, the opposite side terminal surface and the retaining member contact of mount, preferably, the retaining member adopts lock nut 7, lock nut and pivot screw thread fixed connection, the opposite side end face contact of lock nut and mount prevents that the round pin axle from dropping from mount and pivot.

Preferably, a baffle ring is arranged between the fixed frame and the end face of the gear body.

One end of the locking nut is in contact with the fixing frame, one side of the other end of the locking nut is provided with a retaining ring 6, the retaining ring is fixed with the rotating shaft through a retaining ring groove formed in the rotating shaft, and the locking nut is placed to be loosened and fall off.

Example 2:

the present embodiment discloses a gear meshing structure, as shown in fig. 6 to 7, including the bearing drive gear described in embodiment 1, wherein a gear body of the bearing drive gear meshes with the bearing gear.

Example 3:

this embodiment discloses a fan, be provided with embodiment 2 the gear engagement structure, take out drive gear's gear body and bearing gear 9 and mesh mutually, bearing drive gear's gear body is connected with the driving piece, and the driving piece can drive the gear body and rotate, and is preferred, the driving piece adopts drive gear box 11, mount and frame 10 fixed connection.

In this embodiment, the bearing driving gear is a pitch bearing gear or a yaw bearing gear, and other structures of the fan may be the existing fan structure, which is not described in detail herein.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims (10)

1. The utility model provides a bearing drive gear, includes the gear body, its characterized in that, the central point of gear body inserts the fixed pivot that sets up, and the gear body rotates with the pivot to be connected, and a plurality of first oil ducts have been seted up to the tooth root position of gear body, is equipped with total oil duct in the pivot, total oil duct and a plurality of second oil duct intercommunication that can align with first oil duct, the second oil duct is used for setting towards gear engagement position.

2. The bearing driving gear according to claim 1, wherein an oil pipe joint is provided at an end portion of the main oil gallery, the oil pipe joint is fixedly connected to the rotating shaft, and grease can be added into the main oil gallery through the oil pipe joint.

3. The bearing drive gear of claim 1 wherein a seal is disposed between the shaft and the gear body.

4. The bearing drive gear of claim 1, wherein the portion of the shaft extending outside the gear body is fixedly connected to a mounting bracket, and the shaft is fixedly disposed through the mounting bracket.

5. The bearing driving gear as claimed in claim 1, wherein the portion of the rotating shaft extending to the outside of the gear body is provided with a shoulder structure, one side end face of the fixing frame is in contact with a stepped surface formed by the shoulder structure, the fixing frame passes through a pin shaft, the pin shaft extends into the rotating shaft through the stepped surface, the other side end face of the fixing frame is in contact with a locking member for preventing the pin shaft from falling, and the locking member is fixedly connected with the rotating shaft.

6. The bearing drive gear of claim 5 wherein the retaining member comprises a lock nut, the lock nut being in threaded engagement with the shaft.

7. The bearing driving gear as claimed in claim 6, wherein one end of the lock nut is in press contact with the fixing frame, and a retainer ring is provided at one side of the other end, the retainer ring being fixedly connected to the rotary shaft for preventing the lock nut from being loosened and falling off.

8. The bearing drive gear according to claim 1, wherein one end of the second oil passage communicates with the main oil passage, and the other end thereof extends to a bottom groove surface of a groove formed in a circumferential surface of the rotating shaft.

9. A gear engagement structure comprising a bearing drive gear according to any one of claims 1 to 8, the gear body being engaged with a bearing gear.

10. A fan characterized by being provided with the gear engagement structure of claim 9.

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