CN210318416U - Powder metallurgy duplicate gear - Google Patents
Powder metallurgy duplicate gear Download PDFInfo
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- CN210318416U CN210318416U CN201921042901.1U CN201921042901U CN210318416U CN 210318416 U CN210318416 U CN 210318416U CN 201921042901 U CN201921042901 U CN 201921042901U CN 210318416 U CN210318416 U CN 210318416U
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- gear
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- lightening
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Abstract
The utility model relates to the technical field of gears, in particular to a powder metallurgy duplicate gear, which comprises a first gear and a second gear, wherein the end part of the first gear is fixed with the end part of the second gear, the first gear and the second gear are integrally formed, the axle centers of the first gear and the second gear are on the same straight line, the first gear and the second gear are both provided with axle holes, and the axle holes are provided with key grooves; and the surfaces of the first gear and the second gear are sequentially provided with a corrosion-resistant layer and a wear-resistant layer. The utility model has the advantages of being scientific and reasonable in design, simple structure, corrosion-resistant layer and the wearing layer that first gear and second gear surface set gradually for the duplicate gear is more wear-resisting, and corrosion-resistant, thereby prolongs the life of duplicate gear.
Description
Technical Field
The utility model belongs to the technical field of the technique of gear and specifically relates to a powder metallurgy duplicate gear is related to.
Background
Gears and gear products thereof are important basic parts of mechanical equipment, and the main transmission parts of most mechanical complete equipment are in gear transmission. The gear transmission is one of the most widely used mechanical transmissions in modern mechanical products. This is because it can guarantee the constant transmission ratio, and has the advantages of large transmission power range, high efficiency, long service life, etc. The dual gear is called slip gear in the gear train (speed changer), and its function is to change the rotation speed of output shaft.
The current chinese utility model patent that publication number is CN202301832U discloses a duplicate gear, including output gear, input gear, hole and lightening hole, be provided with 8 lightening holes on the output gear, the lightening hole uses the centre of a circle of output gear as central symmetry evenly distributed on the output gear.
The above prior art solutions have the following drawbacks: although the weight of the duplicate gear can be reduced by the lightening holes, the power loss is reduced; however, in the actual use process of the dual gear, the abrasion phenomenon is easy to occur, the abrasion can aggravate the vibration of the dual gear, so that the abrasion is further aggravated, and the service life of the dual gear is further shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a powder metallurgy duplicate gear, it has solved duplicate gear in the in-service use process, the phenomenon of wearing and tearing appears more easily, and wearing and tearing can aggravate duplicate gear's vibrations to further aggravate the problem of wearing and tearing to prolong duplicate gear's life.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a powder metallurgy duplicate gear comprises a first gear and a second gear, wherein the end part of the first gear is fixed with the end part of the second gear, the first gear and the second gear are integrally formed, the axes of the first gear and the second gear are on the same straight line, the first gear and the second gear are both provided with shaft holes, and the shaft holes are provided with key grooves; and the surfaces of the first gear and the second gear are sequentially provided with a corrosion-resistant layer and a wear-resistant layer.
By adopting the technical scheme, the arrangement of the key groove in the shaft hole limits the installation mode of the duplicate gear, and after the duplicate gear is installed on the rotating shaft, the relative rotation abrasion between the rotating shaft and the duplicate gear is limited due to the effect of the key groove and the key on the rotating shaft, so that the service life of the duplicate gear is prolonged; because the surfaces of the first gear and the second gear are sequentially provided with the corrosion-resistant layer and the wear-resistant layer, the surfaces of the first gear and the second gear are relatively wear-resistant, and if the wear-resistant layer is damaged in long-term use, the corrosion-resistant layer can still limit the first gear and the second gear from being corroded, so that the service lives of the first gear and the second gear are prolonged; the first gear and the second gear are integrally formed, so that the processing flow is reduced, and the production cost is reduced. The utility model has the advantages of being scientific and reasonable in design, simple structure, corrosion-resistant layer and the wearing layer that first gear and second gear surface set gradually for the duplicate gear is more wear-resisting, and corrosion-resistant, thereby prolongs the life of duplicate gear.
The utility model discloses further set up to: the diameter of the first gear is larger than that of the second gear, a plurality of lightening holes are formed in the end face of the first gear and are evenly distributed, and the lightening holes are located on the outer side of the second gear.
By adopting the technical scheme, the weight of the duplicate gear is reduced due to the arrangement of the lightening holes, and the loss of power in the transmission process of the duplicate gear is reduced in the using process of the duplicate gear.
The utility model discloses further set up to: and the weight-reducing holes are filled with shock-absorbing materials.
Through adopting above-mentioned technical scheme, inhale the vibrations that the shake material produced when being used for absorbing first gear drive power and moment of torsion for the motion of first gear is more steady, is favorable to prolonging the life of first gear, thereby prolongs the life of duplicate gear.
The utility model discloses further set up to: and the end face of the first gear, which is far away from the second gear, is provided with a lightening groove, and the lightening hole is positioned in the lightening groove.
By adopting the technical scheme, the weight of the first gear is further reduced due to the arrangement of the weight reduction grooves, so that the power loss of the first gear in the transmission process is reduced.
The utility model discloses further set up to: the corrosion-resistant layers on the surfaces of the first gear and the second gear are attached through electroplating, and the corrosion-resistant layers are oxide layers of one or more of zinc, tin, chromium and nickel.
By adopting the technical scheme, the oxide layers of zinc, tin, chromium and nickel are oxide films, so that the corrosion of air and water to the first gear and the second gear is prevented, and the service lives of the first gear and the second gear are prolonged.
The utility model discloses further set up to: the wear-resistant layer is a titanium carbide coating.
By adopting the technical scheme, the titanium carbide coating has good rigidity, wear resistance and low magnetism, so that the wear resistance of the first gear and the second gear is improved.
To sum up, the utility model discloses a beneficial technological effect does:
the utility model has scientific and reasonable design and simple structure, and the corrosion-resistant layer and the wear-resistant layer are arranged on the surfaces of the first gear and the second gear in sequence, so that the duplicate gear is more wear-resistant and corrosion-resistant, thereby prolonging the service life of the duplicate gear;
the diameter of the first gear is larger than that of the second gear, the end face of the first gear is provided with a plurality of lightening holes, the lightening holes are evenly distributed, the lightening holes are located on the outer side of the second gear, the weight of the duplicate gear is lightened due to the arrangement of the lightening holes, and loss of power in the transmission process of the duplicate gear is reduced in the using process of the duplicate gear.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a partial cross-sectional view of a first gear of the present invention.
In the figure, 1, a first gear; 2. a second gear; 3. a shaft hole; 31. a keyway; 4. a corrosion-resistant layer; 5. a wear layer; 6. lightening holes; 7. a shock absorbing material; 8. and a weight reduction groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the powder metallurgy dual gear disclosed by the present invention comprises a first gear 1 and a second gear 2, wherein the end of the first gear 1 is fixed with the end of the second gear 2; in the present embodiment, the first gear 1 and the second gear 2 are manufactured using metallurgical powder, and the first gear 1 and the second gear 2 are integrally formed, thereby reducing the process flow of the duplicate gear, and thus reducing the labor cost for producing the duplicate gear.
Referring to fig. 1 and 2, the axes of the first gear 1 and the second gear 2 are on the same straight line, both the first gear 1 and the second gear 2 are provided with shaft holes 3, and the axis of the shaft hole 3 and the axes of the first gear 1 and the second gear 2 are on the same straight line; the shaft hole 3 is provided with a key groove 31, and the key groove 31 limits the installation mode of the dual gear, so that the installation efficiency of the dual gear is improved. The diameter of the first gear 1 is larger than that of the second gear 2, so that the power and the torque of transmission can be changed conveniently by using a duplicate gear; the end face of the first gear 1 is provided with eight lightening holes 6, the eight lightening holes 6 are uniformly distributed, and the eight lightening holes 6 are positioned on the outer side of the second gear 2, so that the weight of the first gear 1 is effectively reduced, the weight of the dual gear is reduced, and the loss caused by the application of the dual gear to drive power and torque is reduced;
the lightening holes 6 are filled with shock-absorbing materials 7, and the shock-absorbing materials 7 comprise silicon rubber; when the first gear 1 works, the silicon rubber reduces the vibration generated by the first gear 1, so that the first gear 1 can run more stably, and the service life of the first gear 1 is prolonged;
the end face, away from the second gear 2, of the first gear 1 is provided with a lightening groove 8, the lightening holes 6 are located in the lightening groove 8, and the weight of the first gear 1 is further lightened due to the lightening groove 8, so that the weight of the duplicate gear is lightened.
Referring to fig. 2 and 3, the surfaces of the first gear 1 and the second gear 2 are sequentially provided with a corrosion-resistant layer 4 and a wear-resistant layer 5; in the embodiment, the corrosion-resistant layer 4 is an oxide layer of one or more of zinc, tin, chromium and nickel, and the wear-resistant layer 5 can be plated on the surfaces of the first gear 1 and the second gear 2 by electroplating, hot-dipping and spraying; the wear-resistant layer 5 is a titanium carbide coating which has good rigidity, wear resistance and low magnetism and is beneficial to improving the wear resistance of the first gear 1 and the second gear 2.
The implementation principle of the embodiment is as follows: the arrangement of the key groove 31 in the shaft hole 3 limits the installation mode of the duplicate gear, and after the duplicate gear is installed on the rotating shaft, the relative rotating abrasion between the rotating shaft and the duplicate gear is limited due to the effect of the key groove 31 and the key on the rotating shaft, so that the service life of the duplicate gear is prolonged; because the surfaces of the first gear 1 and the second gear 2 are sequentially provided with the corrosion-resistant layer 4 and the wear-resistant layer 5, the surfaces of the first gear 1 and the second gear 2 are relatively wear-resistant, if the wear-resistant layer 5 is damaged in long-term use, the corrosion-resistant layer 4 can still limit the first gear 1 and the second gear 2 from being corroded, and therefore the service lives of the first gear 1 and the second gear 2 are prolonged; the first gear 1 and the second gear 2 are integrally formed, so that the processing flow is reduced, and the production cost is reduced. The utility model has the advantages of being scientific and reasonable in design, simple structure, corrosion-resistant layer 4 and wearing layer 5 that first gear 1 and 2 surfaces of second gear set gradually for the duplicate gear is more wear-resisting, and corrosion-resistant, thereby prolongs the life of duplicate gear.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (2)
1. A powder metallurgy duplicate gear, includes first gear (1) and second gear (2), and the tip of first gear (1) is fixed with the tip of second gear (2), its characterized in that: the first gear (1) and the second gear (2) are integrally formed, the axes of the first gear (1) and the second gear (2) are in the same straight line, both the first gear (1) and the second gear (2) are provided with shaft holes (3), and the shaft holes (3) are provided with key grooves (31); the surfaces of the first gear (1) and the second gear (2) are sequentially provided with a corrosion-resistant layer (4) and a wear-resistant layer (5); the diameter of the first gear (1) is larger than that of the second gear (2), a plurality of lightening holes (6) are formed in the end face of the first gear (1), the lightening holes (6) are uniformly distributed, and the lightening holes (6) are located on the outer side of the second gear (2); the lightening holes (6) are filled with shock-absorbing materials (7); the end face, deviating from the second gear (2), of the first gear (1) is provided with a lightening groove (8), and the lightening hole (6) is located in the lightening groove (8).
2. A powder metallurgy double-pinion according to claim 1, wherein: the wear-resistant layer (5) is a titanium carbide coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921042901.1U CN210318416U (en) | 2019-07-04 | 2019-07-04 | Powder metallurgy duplicate gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921042901.1U CN210318416U (en) | 2019-07-04 | 2019-07-04 | Powder metallurgy duplicate gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318416U true CN210318416U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921042901.1U Active CN210318416U (en) | 2019-07-04 | 2019-07-04 | Powder metallurgy duplicate gear |
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| CN (1) | CN210318416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606315A (en) * | 2021-07-02 | 2021-11-05 | 东莞市元瑞科技有限公司 | Metal powder metallurgy duplicate gear, preparation method and processing equipment |
-
2019
- 2019-07-04 CN CN201921042901.1U patent/CN210318416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606315A (en) * | 2021-07-02 | 2021-11-05 | 东莞市元瑞科技有限公司 | Metal powder metallurgy duplicate gear, preparation method and processing equipment |
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