CN216895671U - Speed reducer - Google Patents
Speed reducer Download PDFInfo
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- CN216895671U CN216895671U CN202123432067.7U CN202123432067U CN216895671U CN 216895671 U CN216895671 U CN 216895671U CN 202123432067 U CN202123432067 U CN 202123432067U CN 216895671 U CN216895671 U CN 216895671U
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- oil pump
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Abstract
The utility model relates to the field of automobile parts, in particular to a speed reducer, which comprises a shell, an input shaft and an output shaft, wherein an input gear is coaxially and fixedly arranged on the input shaft, an output gear is coaxially and fixedly arranged on the output shaft, and the output gear and the input gear are both positioned in the shell; the inner part of the shell is rotatably connected with an intermediate gear, the intermediate gear is positioned between the input gear and the output gear, and the input gear transmits the rotating power to the output gear through the intermediate gear; the internally mounted of shell has oil pump structure, and the top of shell is equipped with the oil spilling mouth that is located the shell inside, and the bottom of shell is equipped with the oil absorption mouth that is located the shell inside, and oil absorption mouth and oil spilling mouth all communicate with oil pump structure. This scheme has solved the problem that the reduction gear can not vertically install.
Description
Technical Field
The utility model relates to the field of automobile parts, in particular to a speed reducer.
Background
Along with the continuous popularization of new forms of energy, new forms of energy structure transformation has been the trend, and the motor speed is generally higher than traditional fuel engine, conventional reduction gear can not satisfy the use operating mode of motor for the new forms of energy, and the reduction gear needs vertical installation to some special arrangement condition, and current conventional reduction gear can't vertically install, because during vertical installation, the height of reduction gear is great, the spare part of reduction gear bottom can contact with the lubricating oil of reduction gear bottom, and the part of reduction gear top partially can not contact with the lubricating oil of reduction gear bottom owing to be in higher position, when the vertical installation of conventional reduction gear like this, the spare part of top just can't obtain the lubrication, so current conventional reduction gear can not carry out vertical installation, can't satisfy the demand of vertical installation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a speed reducer to solve the problem that a speed reducer cannot be vertically installed.
In order to achieve the purpose, the utility model adopts the following technical scheme: a speed reducer comprises a shell, an input shaft and an output shaft, wherein an input gear is coaxially and fixedly installed on the input shaft, an output gear is coaxially and fixedly installed on the output shaft, and the output gear and the input gear are both positioned in the shell; an intermediate gear is rotatably connected inside the shell, the intermediate gear is positioned between the input gear and the output gear, and the input gear transmits the rotating power to the output gear through the intermediate gear; the oil pump structure is arranged in the groove, the top of the shell is provided with an oil overflow port located inside the shell, the bottom of the shell is provided with an oil suction port located inside the shell, and the oil suction port and the oil overflow port are communicated with the oil pump structure.
The principle and the advantages of the scheme are as follows: the oil pump structure is equipped with in the reduction gear in this scheme, oil pump structure work can be inhaled the lubricating oil of shell bottom through the oil absorption mouth of shell bottom, and carry the top of shell with lubricating oil, lubricating oil flows down through the oil spilling mouth, lubricating oil flows into on the corresponding spare part, thereby lubricate for the spare part far away from the shell bottom, the long-time operation of reduction gear when vertical installation has been guaranteed, even if like this the vertical installation of reduction gear, the inside spare part far away from the reduction gear bottom also can obtain the lubrication of lubricating oil, thereby make the reduction gear can vertically install.
The technical scheme of this scheme of adoption has following beneficial effect: 1. the internal oil pump structure that embeds of reduction gear has reduced the installation of external oil pump, oil pipe joint and oil pipe's arrangement, and the outward appearance is more pleasing to the eye, has reduced the oil leak point, uses more reliably.
2. Through this scheme, can compromise the mounting means of the vertical installation of reduction gear and horizontal installation, the driving system's of being convenient for whole is arranged.
Preferably, as an improvement, the oil pump structure comprises an oil pump inner rotor and an oil pump outer rotor, the oil pump inner rotor and the oil pump outer rotor are both rotationally connected to the shell, the oil pump inner rotor is located on the inner side of the oil pump outer rotor, and the oil pump inner rotor is eccentrically arranged on the oil pump outer rotor; any one of the input gear, the intermediate gear and the output gear is connected with the inner rotor of the oil pump. Therefore, when any one of the input gear, the intermediate gear and the output gear rotates, any one of the input gear, the intermediate gear and the output gear can drive the oil pump inner rotor to rotate, the oil pump outer rotor performs driven rotation under the rotation of the oil pump inner rotor, the operation of the whole oil pump structure is further realized, and the lubricating oil can flow from a low position to a high position. Through this scheme, need not to drive at the structural extra installation power of oil pump, simple structure is convenient, has reduced installation cost and use cost.
Preferably, as a modification, an oil filter is installed at the oil suction port. The oil filter is used for filtering the lubricating oil sucked in the suction port.
Preferably, as an improvement, the oil spilling port has a plurality of. Thus, the lubricating oil can flow out from different oil overflow ports, so that different parts can be lubricated, such as gears and bearings.
Preferably, as an improvement, a tapered roller bearing is connected between the housing and at least one of the input gear, the intermediate gear, and the output gear. The tapered roller bearing is adopted for corresponding supporting, so that the rigidity is good, and the bearing capacity is stronger.
Preferably, as a refinement, the intermediate gear, the input gear and the output gear are all helical gears. The helical gear has smaller noise in meshing compared with a straight gear, and is suitable for reducing the speed of a high-speed motor.
Preferably, as an improvement, the angle of the helix angle of the helical gear is not less than 35 degrees, the tooth crest factor is 1.2-1.4, and the gear mesh contact ratio is 3. Therefore, the helical gear with the parameters is selected, so that the gear has higher precision, lower running noise and more stable running, and is suitable for decelerating a high-speed motor.
Preferably, as an improvement, the housing is made of aluminum alloy. The shell made of aluminum alloy is light in weight, and the reducer is lighter in weight.
Drawings
Fig. 1 is a vertical sectional view of a reduction device.
Fig. 2 is a schematic structural view of the oil suction port.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the oil pump comprises a front shell 1, an input shaft 2, an intermediate shaft 3, an output gear 4, an output shaft 5, an output flange 6, a rear shell 7, an oil pump cover 8, an oil pump rotor shaft 9, an oil pump inner rotor 10, an oil pump outer rotor 11, a tapered roller bearing 12, an input gear 13, an intermediate gear 14, an oil overflow port 15, an oil filter 20, a compression spring 21 and a cover plate 22.
The embodiment is basically as shown in the attached figures 1-2: a speed reducer comprises a shell, an input shaft 2 and an output shaft 5, wherein the shell comprises a front shell 1 and a rear shell 7, and the front shell 1 and the rear shell 7 are fixedly connected together through bolts. The shell is made of aluminum alloy. The input shaft 2 is mounted between the front and rear housings 1, 7 by two tapered roller bearings 12. The output shaft 5 is mounted between the front and rear housings 1, 7 by means of two tapered roller bearings 12. The input shaft 2 is positioned above the output shaft 5, the input shaft 2 is coaxially and fixedly provided with an input gear 13, the output shaft 5 is coaxially and fixedly provided with an output gear 4 through a flat key and interference, and the output gear 4 and the input gear 13 are both positioned in the shell. The output shaft 5 is connected with the output flange 6 through a spline to transmit power output. An intermediate shaft 3 is rotatably connected inside the shell through two tapered roller bearings 12, an intermediate gear 14 is coaxially and fixedly connected to the intermediate shaft 3, the intermediate gear 14 is located between the input gear 13 and the output gear 4, and the number of the intermediate gears 14 can be one or more. The input gear 13 transmits the rotational power to the output gear 4 through the intermediate gear 14. The intermediate gear 14, the input gear 13 and the output gear 4 in this embodiment are all helical gears. The angle of the helical angle of the bevel gear is not less than 35 degrees, the tooth crest coefficient is 1.2-1.4, preferably 1.3, and the meshing overlap ratio of the gears is 3.
The inside of shell installs oil pump structure, and the top of shell is equipped with the oil spilling mouth 15 that is located the inside of shell, and oil spilling mouth 15 has a plurality ofly, and the quantity of oil spilling mouth 15 in this embodiment is three. The bottom of the rear shell 7 is provided with an oil suction opening positioned in the shell, and the oil suction opening and the oil overflow opening 15 are communicated with an oil pump structure. An oil filter 20 is installed at the oil suction port. The oil filter 20 is mounted at an oil suction port provided on the rear case 7 through a compression spring 21 and a cap plate 22.
The oil pump structure includes oil pump inner rotor 10 and oil pump outer rotor 11, is provided with the drive groove that drives oil pump rotor shaft 9 to oil pump inner rotor 10 on the left end of jackshaft 3, and oil pump inner rotor 10 and oil pump rotor shaft 9 are through magnitude of interference fixed connection. The oil pump inner rotor 10 is located the left end of jackshaft 3, and the right-hand member of oil pump rotor shaft 9 passes through the flat key card in the drive groove. The rear shell 7 is provided with a groove for accommodating an oil pump inner rotor 10 and an oil pump outer rotor 11, the oil pump inner rotor 10 and the oil pump outer rotor 11 are positioned in the groove, the left side part of the rear shell 7 is fixedly provided with an oil pump cover 8 through bolts, and the oil pump inner rotor 10 and the oil pump outer rotor 11 are covered by the oil pump cover 8. The oil pump inner rotor 10 is located on the inner side of the oil pump outer rotor 11, and the oil pump inner rotor 10 is eccentrically arranged on the oil pump outer rotor 11.
It is understood that the oil pump structure may be disposed near the input shaft 2 to drive the oil pump inner rotor 10 to rotate, or the oil pump structure may be disposed near the output shaft 5 to drive the oil pump inner rotor 10 to rotate, and the oil pump structure may be disposed near the output shaft 5 to drive the oil pump inner rotor 10 to rotate.
The specific implementation process is as follows: the input shaft 2 is externally connected with external power, the input shaft 2 drives the input gear 13 to rotate, the input gear 13 drives the intermediate gear 14 to rotate, the intermediate gear 14 drives the output gear 4 to rotate, and the output gear 4 drives the output shaft 5 to rotate. The speed reducer is at the during operation, the interior outer rotor of oil pump rotates under the drive of jackshaft 3 always, oil pump structure work, lubricating oil enters into oil pump structure through the oil absorption mouth on 7 bottoms on the derailleur backshells, oil pump structure transports lubricating oil to the speed reducer top, flow out from last front shell 1 on top and the three oil-out on backshell 7, lubricate two bearings of installation on the input shaft 2 and the input shaft 2 gear on the input shaft 2 respectively, the oil after the lubrication flows into the inside of the speed reducer, circulate in proper order, form a whole set of lubricating system, when having guaranteed the speed reducer and installing vertically, speed reducer work can obtain long-time lubrication.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A speed reducer comprises a shell, an input shaft and an output shaft, wherein an input gear is coaxially and fixedly installed on the input shaft, an output gear is coaxially and fixedly installed on the output shaft, and the output gear and the input gear are both positioned in the shell; an intermediate gear is rotatably connected inside the shell, the intermediate gear is positioned between the input gear and the output gear, and the input gear transmits the rotating power to the output gear through the intermediate gear; the method is characterized in that: the oil pump structure is characterized in that a groove is formed in the shell, an oil pump structure is installed in the groove, an oil overflow port located in the shell is formed in the top of the shell, an oil suction port located in the shell is formed in the bottom of the shell, and the oil suction port and the oil overflow port are communicated with the oil pump structure.
2. A decelerator fitting as claimed in claim 1, wherein: the oil pump structure comprises an oil pump inner rotor and an oil pump outer rotor, wherein the oil pump inner rotor and the oil pump outer rotor are both rotationally connected to the shell, the oil pump inner rotor is positioned on the inner side of the oil pump outer rotor, and the oil pump inner rotor is eccentrically arranged on the oil pump outer rotor; any one of the input gear, the intermediate gear and the output gear is connected with an inner rotor of the oil pump.
3. A decelerating device as claimed in claim 1, characterized in that: an oil filter is arranged at the oil suction port.
4. A decelerating device as claimed in claim 1, characterized in that: the oil overflow port is provided with a plurality of oil overflow ports.
5. A decelerating device as claimed in claim 1, characterized in that: a tapered roller bearing is connected between the housing and at least one of the input gear, the intermediate gear and the output gear.
6. A decelerating device as claimed in claim 1, characterized in that: the intermediate gear, the input gear and the output gear are all helical gears.
7. A decelerating device as claimed in claim 6, characterized in that: the angle of the helical angle of the bevel gear is not less than 35 degrees, the tooth crest coefficient is 1.2-1.4, and the meshing contact ratio of the gears is 3.
8. A decelerator fitting as claimed in any one of claims 1 to 7, wherein: the shell is made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123432067.7U CN216895671U (en) | 2021-12-30 | 2021-12-30 | Speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123432067.7U CN216895671U (en) | 2021-12-30 | 2021-12-30 | Speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216895671U true CN216895671U (en) | 2022-07-05 |
Family
ID=82211195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123432067.7U Active CN216895671U (en) | 2021-12-30 | 2021-12-30 | Speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216895671U (en) |
-
2021
- 2021-12-30 CN CN202123432067.7U patent/CN216895671U/en active Active
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