CN109253055B - Cable hollow shaft connection structure and fan speed increasing box - Google Patents
Cable hollow shaft connection structure and fan speed increasing box Download PDFInfo
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- CN109253055B CN109253055B CN201811228995.1A CN201811228995A CN109253055B CN 109253055 B CN109253055 B CN 109253055B CN 201811228995 A CN201811228995 A CN 201811228995A CN 109253055 B CN109253055 B CN 109253055B
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- hollow
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- 238000003825 pressing Methods 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims description 49
- 230000013011 mating Effects 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 15
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/60—Shafts
- F05B2240/61—Shafts hollow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/403—Transmission of power through the shape of the drive components
- F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
- F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02078—Gearboxes for particular applications for wind turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a cable hollow shaft connecting structure and a fan speed increasing box, and relates to the technical field of high-power fan speed increasing structures. The cable hollow shaft connecting structure is applied to a fan speed increasing box and comprises a cable hollow shaft, a planet carrier and a sun gear, wherein the cable hollow shaft comprises a first matching part used for being matched and connected with the planet carrier and a second matching part used for being matched and connected with the sun gear, the cable hollow shaft penetrates through the sun gear and the planet carrier, the upper wind direction end of the cable hollow shaft is installed in a first through hole of the planet carrier and is connected with the planet carrier through a stop pressing plate, the lower wind direction end of the cable hollow shaft is installed in an inner hole of a box body through a bearing, and the end face of the bearing is axially fixed through the pressing plate, so that the planet carrier drives the cable hollow shaft to synchronously rotate when rotating. The cable hollow shaft after installation is good in centering effect, convenient to detach when the maintenance is needed to be detached, good in maintainability and high in reliability.
Description
Technical Field
The invention relates to the technical field of high-power fan speed increasing structures, in particular to a cable hollow shaft connecting structure and a fan speed increasing box.
Background
The fan speed increasing box is a precise gear box with high precision and reliability requirements. The wind turbine generator is an important mechanical component in a wind turbine generator set, is arranged on a main frame of a fan cabin and is used for connecting a hub main shaft and a generator, and the wind turbine generator is mainly used for transmitting power generated by a wind wheel under the action of wind power to the generator and enabling the power to obtain corresponding rotating speed, and is a core device in the fan.
The fan speed increasing box is required to be safe and reliable, durable, and the service life is generally required to be 20 years, and the market provides higher requirements on maintainability of the fan in consideration of high maintenance cost caused by special working conditions of the fan.
The cable hollow shaft is a channel through which a fan pitch mechanism control and a power cable pass, and is arranged in the speed increasing box after passing through a planet carrier, a sun gear, a large gear and a box body of the fan speed increasing box, so that the cable hollow shaft is an important component of the speed increasing box, however, the centering and the installation of the cable hollow shaft are troublesome when the gear box is assembled and when the gear box is maintained in a post-period fan engine room.
Disclosure of Invention
The invention aims to provide a cable hollow shaft connecting structure, wherein a cable hollow shaft penetrates through a planet carrier and a sun gear, the upper wind direction end of the cable hollow shaft is connected with an inner hole of the planet carrier through a stop pressing plate, so that the planet carrier and the cable hollow shaft synchronously rotate, the centering effect is good, the installation and the disassembly are convenient, the maintainability is good, and the reliability is high.
The invention also aims to provide a fan speed increasing box, which has the advantage of the hollow cable shaft connecting structure.
Embodiments of the present invention are implemented as follows:
based on the above objects, an embodiment of the present invention provides a hollow cable shaft connection structure, including a hollow cable shaft, a planet carrier, and a sun gear;
the hollow cable shaft comprises a first matching part used for being matched with the planet carrier and a second matching part used for being matched with the sun gear, the first matching part comprises a first cylindrical surface, and the second matching part comprises a boss part;
the planet carrier comprises a first through hole matched with the first cylindrical surface, the sun gear is provided with a second through hole corresponding to the hollow cable shaft, the second through hole comprises a second cylindrical hole matched with the boss part, and the diameter size of the boss part is smaller than the minimum aperture size of the second through hole.
In addition, the hollow cable shaft connecting structure provided by the embodiment of the invention can also have the following additional technical characteristics:
in an alternative embodiment of the present invention, the first mating portion further includes a first conical surface, the first conical surface being located on a side of the first cylindrical surface away from the second mating portion, the diameter size of the first conical surface gradually decreasing from an end close to the first cylindrical surface to an end far from the first cylindrical surface;
the second matching part further comprises a second cylindrical surface, the second cylindrical surface is located between the first cylindrical surface and the boss part, the diameter size of the second cylindrical surface is larger than that of the first cylindrical surface, a step is formed between the first matching part and the second matching part, and the outer diameter size of the longitudinal projection of the boss part is larger than that of the longitudinal projection of the second cylindrical surface.
In an alternative embodiment of the present invention, a first spigot for fixing a stop pressing plate is disposed on one side of the first conical surface in the circumferential direction, a stop pressing plate is further disposed on one side of the planet carrier away from the sun gear, the stop pressing plate is fixedly disposed on the first spigot, the stop pressing plate is fixedly connected with the planet carrier through a connecting piece, and a cone angle of the first conical surface is smaller than or equal to 20 °.
In an alternative embodiment of the present invention, the first through hole is a first cylindrical hole, at least one sealing groove for embedding a sealing ring is provided on a side wall of the first cylindrical hole, and a conical hole matching portion matched with the first conical surface is provided on a side of the planet carrier away from the sun gear;
the sun gear is provided with a first side face and a second side face which are opposite, the first side face is close to the planet carrier relative to the second side face, the second through hole sequentially comprises a second cylindrical hole, a first transition hole and a third cylindrical hole, the aperture size of the third cylindrical hole is smaller than that of the second cylindrical hole, the first transition hole is connected with the second cylindrical hole and the third cylindrical hole, the aperture size of the first transition hole is between that of the third cylindrical hole and that of the second cylindrical hole, and the diameter size of the boss part is smaller than that of the third cylindrical hole.
In an alternative embodiment of the present invention, the boss portion is an annular boss, and a cross-sectional shape of the annular boss is arc-shaped;
the difference in the diameter dimension of the third cylindrical hole and the diameter dimension of the annular boss is less than or equal to 0.2 mm.
In an alternative embodiment of the present invention, the second mating portion further includes a third cylindrical surface, the third cylindrical surface being located on a side of the boss portion away from the second cylindrical surface;
the second through hole is further provided with a second transition hole and a fourth cylindrical hole, the second transition hole is positioned on one side of the third cylindrical hole away from the first transition hole, and the fourth cylindrical hole is positioned on one side of the second transition hole away from the third cylindrical hole;
the aperture size of the fourth cylindrical hole is larger than that of the third cylindrical hole, the second transition hole is connected with the third cylindrical hole and the fourth cylindrical hole, the aperture size of the second transition hole is larger than that of the third cylindrical hole, and the aperture size of the second transition hole is smaller than that of the fourth cylindrical hole.
In an alternative embodiment of the present invention, the first transition hole and the second transition hole are both conical holes, and the cone angle direction of the first transition hole is opposite to the cone angle direction of the second transition hole.
In an alternative embodiment of the invention, the taper angle of the first transition hole is less than or equal to 20 °;
the taper angle of the second transition hole is less than or equal to 20 degrees.
In an alternative embodiment of the present invention, the hollow cable shaft connection structure further includes a case and a pressing plate, the case being disposed at a side of the sun gear remote from the planet carrier;
the novel solar energy power generation device is characterized in that a bearing is arranged in the box body, an inner ring of the bearing is matched with the cable hollow shaft, and the pressing plate is fixedly arranged on one side, deviating from the sun wheel, of the box body and used for axially limiting the bearing.
The embodiment of the invention also provides a fan speed increasing box, which comprises a speed increasing box body and a cable hollow shaft connecting structure;
the cable hollow shaft connecting structure is fixedly arranged in the speed increasing box body.
The embodiment of the invention has the beneficial effects that: the cable hollow shaft penetrates through the box body, the sun gear and the planet carrier in sequence, the upper wind direction end of the cable hollow shaft is connected with the inner hole of the planet carrier through the stop pressing plate, and then the cable hollow shaft and the planet carrier rotate together, so that the centering effect is good, the installation and the disassembly are convenient, the maintainability is good, and the reliability is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a hollow cable shaft connection structure provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a hollow cable shaft in the hollow cable shaft connection structure provided in embodiment 1 of the present invention;
fig. 3 is a partial enlarged view of iii in the hollow cable shaft connection structure provided in embodiment 1 of the present invention;
fig. 4 is a partial enlarged view of iv in the hollow cable shaft connection structure provided in embodiment 1 of the present invention.
Icon: 100-a hollow cable shaft connecting structure; 10-a hollow cable shaft; 101-upwind end; 102-downwind end; 103-a first mating portion; 1032—a first cylindrical surface; 1035-a first conical surface; 1038-a first spigot; 106-a second mating portion; 1063-a second cylindrical surface; 1065-boss portion; 1068-a third cylindrical surface; 108-a third mating portion; 1085-spigot stop; 13-a planet carrier; 132-a first through hole; 135-sealing groove; 15-a sun gear; 152-a second through hole; 153-a second cylindrical bore; 154-a first transition aperture; 155-a third cylindrical bore; 156-a second transition aperture; 157-fourth cylindrical bore; 16-a box body; 165-bearings; 17-pressing plates; 18-a stop pressure plate; 19-O type sealing washer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Wherein fig. 1 to fig. 4 correspond to embodiment 1 of the present invention, a technical solution of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the hollow cable shaft connecting structure 100 provided in embodiment 1 of the present invention is applied to a fan speed increasing box, where the hollow cable shaft connecting structure 100 includes a hollow cable shaft 10, a planet carrier 13, a sun gear 15, a box 16 and a pressing plate 17, where the hollow cable shaft 10 sequentially passes through the box 16, the sun gear 15 and the planet carrier 13, so that an upwind end 101 of the hollow cable shaft 10 is installed in an inner hole of the planet carrier 13, a downwind end 102 of the hollow cable shaft 10 is installed in an inner hole of the box 16 through a bearing 165, and an end surface of the bearing 165 is axially fixed by the pressing plate 17, so as to drive the hollow cable 10 to synchronously rotate when the planet carrier 13 rotates, and the hollow cable shaft 10 after installation has a good centering effect, and is convenient to detach and has good maintainability when it needs to detach and maintain.
The specific structure of the respective components of the hollow cable attachment 100 and the correspondence relationship with each other will be described in detail.
Referring to fig. 1, a hollow cable shaft connection structure 100 includes a hollow cable shaft 10, a planet carrier 13, a sun gear 15 and a box 16, the hollow cable shaft 10 includes an upwind end 101 and a downwind end 102 opposite to each other, and the upwind end 101 of the hollow cable shaft 10 sequentially passes through the planet carrier 13, the sun gear 15 and the box 16 when assembled, so that the upwind end 101 of the hollow cable shaft 10 corresponds to the planet carrier 13, and the downwind end 102 of the hollow cable shaft 10 corresponds to the box 16.
Specifically, as shown in fig. 2 and 3, the portion of the hollow cable shaft 10 that mates with the planet carrier 13 is a first mating portion 103, the portion of the hollow cable shaft 10 that mates with the sun gear 15 is a second mating portion 106, and the first mating portion 103 includes a first cylindrical surface 1032 and a first conical surface 1035, wherein the first conical surface 1035 is located on a side of the first cylindrical surface 1032 away from the second mating portion 106, and the diameter of the first conical surface 1035 gradually decreases from an end close to the first cylindrical surface 1032 to an end far from the first cylindrical surface 1032.
Optionally, the taper angle of the first conical surface 1035 is less than or equal to 20 °.
Optionally, a first spigot 1038 is provided on one side of the first conical surface 1035 in the circumferential direction, and the first spigot 1038 is used for fixing the stop pressing plate 18, so as to fixedly connect the planet carrier 13 with the hollow cable shaft 10.
Optionally, the second mating portion 106 includes a second cylindrical surface 1063, a boss portion 1065, and a third cylindrical surface 1068, the second cylindrical surface 1063 is located between the first cylindrical surface 1032 and the boss portion 1065, and the third cylindrical surface 1068 is located on a side of the boss portion 1065 away from the second cylindrical surface 1063. The diameter dimension of the second cylindrical surface 1063 is larger than the diameter dimension of the first cylindrical surface 1032, so that a step is formed between the first mating portion 103 and the second mating portion 106, and the outer diameter dimension of the longitudinal projection of the boss portion 1065 is larger than the outer diameter dimension of the longitudinal projection of the second cylindrical surface 1063.
Optionally, the diameter sizes of the second cylindrical surface 1063 and the third cylindrical surface 1068 are the same, and it is understood that the diameter size of the second cylindrical surface 1063 and the diameter size of the third cylindrical surface 1068 may be different, so long as the outer diameter size of the boss portion 1065 is satisfied and is larger than the diameter size of the second cylindrical surface 1063 and the diameter size of the third cylindrical surface 1068.
Optionally, boss portion 1065 is annular boss, and this annular boss's cross section shape is circular-arc, and the production and processing of being convenient for, easy to assemble cooperation during the assembly, simultaneously, this annular boss is to be through the hardening treatment, guarantees its intensity and hardness, satisfies the user demand of fan speed increasing box.
Optionally, the downwind end 102 of the hollow cable shaft 10 is provided with a third mating portion 108 mated with the box 16, and a spigot stop 1085 mated with the inner race of the bearing 165 is provided on the third mating portion 108.
Specifically, referring to fig. 3, the planet carrier 13 includes a first through hole 132, the first through hole 132 is a first cylindrical hole matched with the first cylindrical surface 1032, at least one sealing groove 135 for embedding a sealing ring is provided on a side wall of the first cylindrical hole, and a conical hole matching portion matched with the first conical surface 1035 is provided on a side of the planet carrier 13 away from the sun gear 15.
Optionally, the number of the sealing grooves 135 is at least three, O-shaped sealing rings 19 are all arranged in the three sealing grooves 135, a stop pressing plate 18 is further arranged on one side, far away from the sun gear 15, of the planet carrier 13, the stop pressing plate 18 is fixedly arranged at the first spigot 1038, the stop pressing plate 18 is fixedly connected with the planet carrier 13 through a connecting piece, in this embodiment 1, the connecting piece is a bolt, namely, the O-shaped sealing rings 19 are installed in the sealing grooves 135 of the planet carrier 13, the planet carrier 13 is in sealing connection with the hollow cable shaft 10, the stop pressing plate 18 and the planet carrier 13 are fixed in a bolt mode, and one end of the stop pressing plate 18 is installed in the first spigot 1038 of the hollow cable shaft 10.
Specifically, as shown in fig. 3, the sun gear 15 has a first side and a second side opposite to each other, the first side is close to the planet carrier 13, the second side is far away from the planet carrier 13, the sun gear 15 is provided with a second through hole 152 corresponding to the hollow cable 10, and the second through hole 152 extends from the first side to the second side.
The second through hole 152 sequentially includes, from the first side to the second side, a second cylindrical hole 153, a first transition hole 154, a third cylindrical hole 155, a second transition hole 156, and a fourth cylindrical hole 157, wherein the aperture size of the third cylindrical hole 155 is smaller than the aperture sizes of the second cylindrical hole 153 and the fourth cylindrical hole 157, the first transition hole 154 connects the second cylindrical hole 153 and the third cylindrical hole 155, and the aperture size of the first transition hole 154 is larger than the aperture size of the third cylindrical hole 155 and smaller than the aperture size of the second cylindrical hole 153, the second transition hole 156 connects the third cylindrical hole 155 and the fourth cylindrical hole 157, and the aperture size of the second transition hole 156 is larger than the aperture size of the third cylindrical hole 155 and smaller than the aperture size of the fourth cylindrical hole 157.
In this embodiment 1, the first transition hole 154 and the second transition hole 156 are both conical holes, the taper angle direction of the first transition hole 154 is opposite to the taper angle direction of the second transition hole 156, and the taper angle of the first transition hole 154 is less than or equal to 20 °, and the taper angle of the second transition hole 156 is less than or equal to 20 °. Optionally, the taper angle of the first transition aperture 154 is equal to the taper angle of the second transition aperture 156.
Optionally, after the hollow cable shaft 10 is assembled with the sun gear 15, the boss portion 1065 of the second mating portion 106 mates with the second cylindrical hole 153 of the sun gear 15, and since the hollow cable shaft 10 needs to pass through the sun gear 15 and the planet carrier 13 in sequence, the diameter size of the boss portion 1065 is required to be smaller than or equal to the diameter size of the third cylindrical hole 155 in the sun gear 15, and the size difference between the diameter size of the third cylindrical hole 155 and the diameter size of the spherical boss is smaller than or equal to 0.2 mm, so that interference can not occur in the installation process, and the installation effect is also ensured.
Specifically, referring to fig. 4, the casing 16 is disposed on one side of the sun gear 15 far away from the planet carrier 13, a bearing 165 is disposed in the casing 16, wherein an inner ring of the bearing 165 is cooperatively connected with the third mating portion 108 of the hollow cable shaft 10, an outer ring of the bearing 165 is cooperatively connected with a central hole of the casing 16, and a pressing plate 17 is fixedly disposed on one side of the casing 16 far away from the sun gear 15 and is used for axially limiting the bearing 165, and optionally, the pressing plate 17 and the casing 16 are fixedly connected by adopting a bolt manner.
The installation, maintenance and disassembly processes of the cable hollow shaft connection structure 100 are as follows:
firstly, the bearing 165 is installed at the third matching part 108 of the hollow cable shaft 10, then the upwind end 101 of the hollow cable shaft 10 is penetrated from the box 16, the sun gear 15 and the planet carrier 13 in sequence, so that the upwind end 101 of the hollow cable shaft 10 is positioned in the first through hole 132 of the planet carrier 13, meanwhile, a plurality of O-shaped sealing rings 19 are installed between the first matching part 103 of the hollow cable shaft 10 and the first through hole 132 of the planet carrier 13, the hollow cable shaft 10 and the planet carrier 13 are sealed, the stop pressing plate 18 is installed at the first spigot 1038 of the hollow cable 10, thereby fixedly connecting the planet carrier 13 with the hollow cable 10, the downwind end 102 of the hollow cable 10 is fixedly connected with the box 16, and the outer ring of the bearing 165 is matched with the central hole of the box 16 due to the fact that the inner ring of the bearing 165 is matched with the third matching part 108 of the hollow cable shaft 10, the outer side of the pressing plate 17 is used for pressing the axial movement of the bearing 165, meanwhile, the pressing plate 17 and the box 16 are fixedly connected through bolts or other modes, and simultaneously, the downwind end 102 of the hollow cable shaft 10 can be fixedly rotated by the aid of the stop pressing plate or the other modes, and the hollow cable shaft 10 can be synchronously rotated by the hollow cable shaft or the hollow shaft 10.
When the hollow cable shaft connection structure 100 needs to be maintained and disassembled, firstly, the phase mark of the hollow cable shaft is made at the downwind end 102, then the pressing plate 17 is disassembled, the hollow cable shaft 10 is slowly pulled out of the downwind end 102, in the pulling-out process, firstly, the boss portion 1065 is contacted with the first transition hole 154 of the sun gear 15, then the boss portion 1065 is contacted with the third cylindrical hole 155, then the boss portion 1065 is contacted with the second transition hole 156, finally the boss portion 1065 is contacted with the fourth cylindrical hole 157, until finally the whole hollow cable 10 is pulled out, and the whole process is gradual contact and has little damage.
When maintenance is finished and installation is performed, firstly, the upwind end 101 of the hollow cable shaft 10 penetrates into the box 16, then sequentially penetrates through the second through hole 152 of the sun gear 15 and the first through hole 132 of the planet carrier 13, the boss portion 1065 of the hollow cable shaft 10 firstly contacts the fourth cylindrical hole 157 of the sun gear 15 and then contacts the third cylindrical hole 155, at the moment, the side, far away from the sun, of the box 16 aligns the hollow cable shaft 10 with a phase mark made before disassembly, then slowly prys the downwind end 102 of the hollow cable shaft 10 at one side, so that the upwind end 101 of the hollow cable shaft 10 can be aligned with the first through hole 132 of the planet carrier 13, meanwhile, the hollow cable shaft 10 is slowly pushed upwards until the whole hollow cable shaft 10 is installed in place, and finally the pressing plate 17 is installed.
The hollow cable shaft connecting structure 100 provided in embodiment 1 of the present invention has the following beneficial effects: reasonable in design, simple structure, through the structural design of hollow cable shaft 10, make hollow cable shaft 10 be connected with planet carrier 13 and sun gear 15 cooperation respectively for when rotatory, drive hollow cable shaft 10 synchronous rotation, centering effect is good, and the installation is dismantled conveniently, and maintainability is good, and the reliability is high.
Example 2
The embodiment 2 of the invention provides a fan speed increasing box, which comprises a speed increasing box body and the cable hollow shaft connecting structure 100 provided by the embodiment 1.
The hollow cable shaft connecting structure 100 is fixedly arranged in the speed increasing box body, the hollow cable shaft 10 sequentially penetrates through the box body 16, the sun gear 15 and the planet carrier 13, the upwind direction end 101 of the hollow cable shaft 10 is arranged in the planet carrier 13, the downwind direction end 102 of the hollow cable shaft 10 is arranged in the inner ring of a bearing 165 of the box body 16, the end face of the bearing 165 is axially fixed through a pressing plate 17, the pressing plate 17 is fixedly connected with the box body 16 through a connecting piece, the hollow cable 10 and the planet carrier 13 are fixedly connected through a stop pressing plate 18, and the stop pressing plate 18 is arranged in a first spigot 1038 of the hollow cable 10, so that the planet carrier 13 drives the hollow cable 10 to synchronously rotate. The cable hollow shaft 10 has the advantages of good centering effect, convenient assembly and disassembly, good maintainability and high reliability.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hollow cable shaft connection (100), characterized in that: comprises a cable hollow shaft (10), a planet carrier (13) and a sun gear (15);
the hollow cable shaft (10) comprises a first matching part (103) used for matching with the planet carrier (13) and a second matching part (106) used for matching with the sun gear (15), the first matching part (103) comprises a first cylindrical surface (1032), and the second matching part (106) comprises a boss part (1065);
the planet carrier (13) comprises a first through hole (132) matched with the first cylindrical surface (1032), the sun wheel (15) is provided with a second through hole (152) corresponding to the hollow cable shaft (10), the second through hole (152) comprises a second cylindrical hole (153) matched with the boss part (1065), and the diameter size of the boss part (1065) is smaller than the minimum aperture size of the second through hole (152).
2. The hollow cable shaft connection structure (100) according to claim 1, wherein the first fitting portion (103) further includes a first conical surface (1035), the first conical surface (1035) being located on a side of the first cylindrical surface (1032) away from the second fitting portion (106), the diameter size of the first conical surface (1035) gradually decreasing from an end closer to the first cylindrical surface (1032) to an end farther from the first cylindrical surface (1032);
the second matching part further comprises a second cylindrical surface (1063), the second cylindrical surface (1063) is located between the first cylindrical surface (1032) and the boss part (1065), the diameter size of the second cylindrical surface (1063) is larger than that of the first cylindrical surface (1032), a step is formed between the first matching part (103) and the second matching part (106), and the outer diameter size of the longitudinal projection of the boss part (1065) is larger than that of the longitudinal projection of the second cylindrical surface (1063).
3. The hollow cable shaft connecting structure (100) according to claim 2, wherein a first spigot (1038) for fixing a stop pressing plate (18) is arranged on one circumferential side of the first conical surface (1035), a stop pressing plate (18) is further arranged on one side of the planet carrier far away from the sun gear (15), the stop pressing plate (18) is fixedly arranged on the first spigot (1038), the stop pressing plate (18) is fixedly connected with the planet carrier through a connecting piece, and a cone angle of the first conical surface (1035) is smaller than or equal to 20 °.
4. The hollow cable shaft connecting structure (100) according to claim 2, wherein the first through hole (132) is a first cylindrical hole, at least one sealing groove (135) for embedding a sealing ring is formed in a side wall of the first cylindrical hole, and a conical hole matching part matched with the first conical surface (1035) is formed on one side of the planet carrier (13) away from the sun gear (15);
the sun gear (15) has opposite first and second sides, the first side is close to the planet carrier (13) relative to the second side, from the first side to the second side, the second through hole (152) sequentially comprises a second cylindrical hole (153), a first transition hole (154) and a third cylindrical hole (155), the aperture size of the third cylindrical hole (155) is smaller than that of the second cylindrical hole (153), the first transition hole (154) connects the second cylindrical hole (153) and the third cylindrical hole (155) and the aperture size of the first transition hole (154) is between that of the third cylindrical hole (155) and that of the second cylindrical hole (153), and the diameter size of the boss portion (1065) is smaller than that of the third cylindrical hole (155).
5. The hollow cable shaft connection structure (100) according to claim 4, wherein the boss portion (1065) is an annular boss having a circular arc-shaped cross-sectional shape;
the difference in the size of the aperture size of the third cylindrical hole (155) and the diameter size of the annular boss is less than or equal to 0.2 mm.
6. The hollow cable shaft connection (100) according to claim 4 or 5, wherein the second mating portion (106) further comprises a third cylindrical surface (1068), the third cylindrical surface (1068) being located on a side of the boss portion (1065) remote from the second cylindrical surface (1063);
the second through hole (152) is further provided with a second transition hole (156) and a fourth cylindrical hole (157), the second transition hole (156) is positioned on one side of the third cylindrical hole (155) away from the first transition hole (154), and the fourth cylindrical hole (157) is positioned on one side of the second transition hole (156) away from the third cylindrical hole (155);
the aperture size of the fourth cylindrical hole (157) is larger than that of the third cylindrical hole (155), the second transition hole (156) connects the third cylindrical hole (155) and the fourth cylindrical hole (157), and the aperture size of the second transition hole (156) is larger than that of the third cylindrical hole (155) and smaller than that of the fourth cylindrical hole (157).
7. The hollow cable shaft connection (100) of claim 6, wherein the first transition hole (154) and the second transition hole (156) are both conical holes, and the taper angle direction of the first transition hole (154) is opposite to the taper angle direction of the second transition hole (156).
8. The hollow cable shaft connection (100) of claim 7, wherein the taper angle of the first transition aperture (154) is less than or equal to 20 °;
the taper angle of the second transition aperture (156) is less than or equal to 20 °.
9. The hollow cable shaft connection (100) according to claim 7 or 8, wherein the hollow cable connection (100) further comprises a box (16) and a pressing plate (17), the box (16) being arranged on a side of the sun gear (15) remote from the planet carrier;
the novel solar energy power generation device is characterized in that a bearing (165) is arranged in the box body (16), an inner ring of the bearing (165) is matched with the hollow cable shaft (10), and the pressing plate (17) is fixedly arranged on one side, deviating from the sun wheel (15), of the box body (16) and used for limiting the bearing (165) axially.
10. A fan speed increasing box, characterized by comprising a speed increasing box body and the cable hollow shaft connecting structure (100) according to any one of claims 1-9;
the cable hollow shaft connecting structure (100) is fixedly arranged in the speed increasing box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811228995.1A CN109253055B (en) | 2018-10-22 | 2018-10-22 | Cable hollow shaft connection structure and fan speed increasing box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811228995.1A CN109253055B (en) | 2018-10-22 | 2018-10-22 | Cable hollow shaft connection structure and fan speed increasing box |
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| CN109253055A CN109253055A (en) | 2019-01-22 |
| CN109253055B true CN109253055B (en) | 2024-04-16 |
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| CN201811228995.1A Active CN109253055B (en) | 2018-10-22 | 2018-10-22 | Cable hollow shaft connection structure and fan speed increasing box |
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| JP2000154848A (en) * | 1998-11-19 | 2000-06-06 | Nissan Motor Co Ltd | Planetary gear set |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109253055A (en) | 2019-01-22 |
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