CN210978441U - Internal spline tooth sun gear for engineering machinery - Google Patents
Internal spline tooth sun gear for engineering machinery Download PDFInfo
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- CN210978441U CN210978441U CN201921084769.0U CN201921084769U CN210978441U CN 210978441 U CN210978441 U CN 210978441U CN 201921084769 U CN201921084769 U CN 201921084769U CN 210978441 U CN210978441 U CN 210978441U
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- teeth
- heat
- sun gear
- heat conduction
- heat dissipation
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- 230000017525 heat dissipation Effects 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims 3
- 239000006185 dispersion Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an engineering machine tool is with sun gear of in-band spline tooth, including the sun gear body, the sun gear body includes the outer teeth of a cogwheel and shaft hole, and the shaft hole is equipped with the internal spline tooth, is equipped with the fin between internal spline tooth and the outer teeth of a cogwheel. The utility model discloses have good heat dispersion, can distribute away the heat that outer teeth of a cogwheel and internal spline tooth produced because the meshing passes through the fin, avoid the inside high temperature of sun gear body to prolong the sun gear life-span.
Description
Technical Field
The utility model belongs to the gear field, concretely relates to engineering machine tool is with sun gear of in-band spline tooth.
Background
Gears are toothed mechanical parts that mesh with each other for transmitting power energy. The planetary gear train is an advanced gear transmission mechanism and has the advantages of compact structure, small volume, small mass, large bearing capacity, large transmission power range and transmission range, small operation noise, high efficiency, long service life and the like. In planetary gear transmission, an outer gear having the same axis as the carrier serves as a sun gear, which outputs power and transmits planetary gears engaged around the sun gear.
The internal spline teeth are arranged on the sun gear, so that the sun gear and the spline shaft synchronously rotate, and the connection between the sun gear and the shaft is enhanced. The sun wheel is meshed with the spline shaft and the planet wheels in the running process, and a large amount of heat is generated by the sun wheel. And because the sun gear is located at the center of the planetary gear train, heat is difficult to dissipate, the operation of the whole transmission mechanism is influenced, and the service life of the sun gear is greatly shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an engineering machine tool is with sun gear of in-band spline tooth has good heat dispersion, can distribute away outer teeth of a cogwheel and internal spline tooth because the heat that the meshing produced to extension sun gear life-span.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme:
the utility model provides an engineering machine tool is with sun gear of in-band spline tooth, includes the sun gear body, and the sun gear body includes outer teeth of a cogwheel and shaft hole, and the shaft hole is equipped with internal spline tooth, its characterized in that: and a cooling fin is arranged between the internal spline teeth and the external gear teeth. Because the fin is in between internal spline tooth and the foreign steamer tooth, the fin can be with the heat transfer outside that internal spline tooth and foreign steamer tooth produced, avoids the inside high temperature of sun gear body.
Further, an installation groove is formed between the inner spline teeth and the outer wheel teeth, and the cooling fins are in threaded connection with the installation groove. The heat sink can be mounted and dismounted from the sun wheel body.
Further, the fin includes heat conduction end and heat dissipation end, and the heat conduction end is vertical form and installs between internal spline tooth and foreign wheel tooth, and the heat dissipation end is the bowl form, and the top external diameter of heat dissipation end is less than the root circle diameter of outer teeth of a cogwheel. The heat conducting end of the heat radiating fin is positioned in the inner spline tooth and the outer gear tooth, so that heat generated by the inner spline tooth and the outer gear tooth can be transferred to the heat radiating end through the heat conducting end. The bowl-shaped arrangement of the heat dissipation end can increase the contact area of the heat dissipation end and air, so that heat can be dissipated more quickly. The reason that the external diameter of the top of the heat radiating end is smaller than the diameter of the root circle of the external gear teeth is to prevent the external diameter of the heat radiating fin from being too large to affect the meshing of the external gear teeth and other gears.
Further, radiating holes are uniformly distributed at the radiating end. When the sun wheel operates, air flows through the heat dissipation holes, so that the heat dissipation efficiency of the heat dissipation fins is improved.
Furthermore, blades are fixed on the outer side of the heat conducting end, and the single blade corresponds to the single outer gear. When the sun wheel runs, the blades drive air near the outer wheel teeth to flow along with the running of the sun wheel, so that the temperature of the outer wheel teeth is reduced better.
Further, a heat conduction hole is formed in the inner spline tooth, one end of a heat conduction strip is installed in the heat conduction hole, a heat conduction ring is arranged at the other end of the heat conduction strip in a surrounding mode, and the heat conduction ring is fixed to the heat conduction end through screws. The internal spline tooth is through heat conduction strip with heat transfer to heat conduction circle, from heat conduction circle transmission to heat conduction end again, and then more completely with heat transfer to the outside of internal spline tooth department.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses have good heat dispersion, can distribute away the heat that outer teeth of a cogwheel and internal spline tooth produced because the meshing is through the fin to the extension sun gear life-span. The heat conducting end of the heat radiating fin is positioned in the inner spline tooth and the outer gear tooth, so that heat generated by the inner spline tooth and the outer gear tooth can be transferred to the heat radiating end through the heat conducting end. The bowl-shaped arrangement of the heat dissipation end can increase the contact area of the heat dissipation end and air, so that heat can be dissipated more quickly. The reason that the external diameter of the top of the heat radiating end is smaller than the diameter of the root circle of the external gear teeth is to prevent the external diameter of the heat radiating fin from being too large to affect the meshing of the external gear teeth and other gears. The arrangement of the radiating holes increases the radiating efficiency of the radiating fins. The blades are arranged to enable the blades to drive air near the outer gear teeth to flow when the sun gear runs, so that the temperature of the outer gear teeth is reduced better. The internal spline tooth is through heat conduction strip with heat transfer to heat conduction circle, from heat conduction circle transmission to heat conduction end again, and then more completely with heat transfer to the outside of internal spline tooth department.
Drawings
The present invention will be further explained with reference to the drawings.
Fig. 1 is a schematic structural view of a sun gear body of the present invention;
fig. 2 is a schematic structural view of a sun gear with internal spline teeth for an engineering machine according to the present invention;
fig. 3 is a schematic structural view of the present invention when the heat sink is disassembled.
Detailed Description
The sun gear with the internal spline teeth for the engineering machinery, as shown in fig. 1 to fig. 3, comprises a sun gear body 1, wherein the sun gear body 1 comprises external gear teeth 2 and a shaft hole 3, the shaft hole 3 is provided with internal spline teeth 4, an installation groove 5 is arranged between the internal spline teeth 4 and the external gear teeth 2, and a cooling fin 6 is in threaded connection with the installation groove 5. The heat sink 6 is attachable to and detachable from the sun gear body 1. Because the fin 6 is in between the internal spline tooth 4 and the outer teeth of a cogwheel 2, the fin 6 can be with the heat transfer outside that internal spline tooth 4 and outer teeth of a cogwheel 2 produced, avoid the inside high temperature of sun gear body 1.
The heat sink 6 includes a heat conducting end 601 and a heat dissipating end 602, the heat conducting end 601 is vertically installed between the inner spline teeth 4 and the outer gear teeth 2, the heat dissipating end 602 is bowl-shaped, and the outer diameter of the top of the heat dissipating end 602 is smaller than the diameter of the root circle of the outer gear teeth 2. The heat conducting end 601 of the heat sink 6 is located in the inner spline teeth 4 and the outer wheel teeth 2, so that the heat generated by the two can be transferred to the heat dissipating end 602 through the heat conducting end 601. The bowl-shaped heat dissipation end 602 can increase the contact area of the heat dissipation end 602 with air, so that heat can be dissipated more quickly. The reason why the tip outer diameter of the heat dissipating end 602 is smaller than the root circle diameter of the external gear teeth 2 is to prevent the engagement of the external gear teeth 2 with other gears from being affected by the outer diameter of the heat dissipating fin 6 being too large. The heat dissipation holes 603 are uniformly distributed on the heat dissipation end 602. When the sun gear operates, air flows through the heat dissipation holes 603, thereby increasing the heat dissipation efficiency of the heat dissipation fins 6.
The outer side of the heat conducting end 601 is fixed with a blade 7, and a single blade 7 corresponds to a single outer gear tooth 2. When the sun gear runs, the blades 7 run along with the sun gear, and the corresponding of the blades 7 and the gear can fully drive the air near the outer gear teeth 2 to flow, so that the temperature of the outer gear teeth 2 is better reduced. A heat conduction hole 8 is formed in the inner spline tooth 4, one end of a heat conduction strip 9 is installed in the heat conduction hole 8, a heat conduction ring 10 is arranged at the other end of the heat conduction strip 9 in a surrounding mode, and the heat conduction ring 10 is fixed to the heat conduction end 601 through a screw 11. The internal spline teeth 4 transmit heat to the heat conduction ring 10 through the heat conduction strip 9, and then transmit the heat from the heat conduction ring 10 to the heat conduction end 601, so as to transmit the heat at the internal spline teeth 4 to the outside more completely.
When the sun wheel is assembled, the heat conducting strip 9 is placed in the heat conducting hole 8 on the internal spline tooth 4, the heat radiating fin 6 is screwed into the mounting groove 5, and finally the heat conducting ring 10 is fixed on the heat conducting end 601 through the screw 11.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve the same technical problems and achieve the same technical effects are all covered by the protection scope of the present invention.
Claims (4)
1. The utility model provides an engineering machine tool is with sun gear of in-band spline tooth, includes the sun gear body, the sun gear body includes outer teeth of a cogwheel and shaft hole, the shaft hole is equipped with the internal spline tooth, its characterized in that: the heat dissipation structure is characterized in that a heat dissipation fin is arranged between the inner spline teeth and the outer gear teeth, the heat dissipation fin comprises a heat conduction end and a heat dissipation end, the heat conduction end is vertically arranged between the inner spline teeth and the outer gear teeth, the heat dissipation end is in a bowl shape, the outer diameter of the top of the heat dissipation end is smaller than the diameter of the tooth root circle of the outer gear teeth, and heat dissipation holes are uniformly distributed in the heat dissipation end.
2. The sun gear with internally splined teeth for construction machinery according to claim 1, wherein: and an installation groove is arranged between the internal spline teeth and the external gear teeth, and the radiating fins are in threaded connection with the installation groove.
3. The sun gear with internally splined teeth for construction machinery according to claim 1, wherein: blades are fixed on the outer side of the heat conducting end, and the single blade corresponds to the single outer wheel tooth.
4. The sun gear with internally splined teeth for construction machinery according to claim 1, wherein: the heat conduction structure is characterized in that heat conduction holes are formed in the internal spline teeth, one end of each heat conduction strip is installed in each heat conduction hole, a heat conduction ring is arranged at the other end of each heat conduction strip in a surrounding mode, and the heat conduction rings are fixed to the heat conduction ends through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084769.0U CN210978441U (en) | 2019-07-11 | 2019-07-11 | Internal spline tooth sun gear for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084769.0U CN210978441U (en) | 2019-07-11 | 2019-07-11 | Internal spline tooth sun gear for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210978441U true CN210978441U (en) | 2020-07-10 |
Family
ID=71415197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921084769.0U Expired - Fee Related CN210978441U (en) | 2019-07-11 | 2019-07-11 | Internal spline tooth sun gear for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210978441U (en) |
-
2019
- 2019-07-11 CN CN201921084769.0U patent/CN210978441U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200710 |