CN210397608U - Power take-off device with changeable speed ratio - Google Patents
Power take-off device with changeable speed ratio Download PDFInfo
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- CN210397608U CN210397608U CN201921012627.3U CN201921012627U CN210397608U CN 210397608 U CN210397608 U CN 210397608U CN 201921012627 U CN201921012627 U CN 201921012627U CN 210397608 U CN210397608 U CN 210397608U
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- power take
- transmission shaft
- gear
- gear train
- planet carrier
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Abstract
The utility model discloses a power takeoff device of interchangeable velocity ratio, include: the planetary gear train comprises a sun gear, a planetary gear and a planet carrier, wherein the planet carrier is rotatably provided with a plurality of planetary gears, and the plurality of planetary gears are respectively meshed with the outer gear ring and the sun gear; the transmission shaft includes first transmission shaft and secondary drive axle, and the one end and the sun gear fixed connection of first transmission shaft, the other end stretch out the casing and form first end that stretches out, the one end and the planet carrier fixed connection of secondary drive axle, the other end stretches out the casing and forms the second and stretch out the end. The utility model discloses power takeoff of interchangeable velocity ratio has realized that same power takeoff has the function of different velocity ratios, makes things convenient for the engine complete machine gear train to arrange, and the commonality is high, can satisfy different customers' demand.
Description
Technical Field
The utility model relates to a vehicle power takeoff field especially relates to a power takeoff of interchangeable velocity ratio.
Background
The power takeoff generally consists of parts such as a gear, a box body and a bearing, is connected with an output shaft (or a gear) of an engine or a gearbox, and outputs power to an external working device.
Currently, most specialized vehicles use a power take-off to take the power required for the upper-mount from the automobile engine, usually mounted on the engine flywheel housing, by taking power from the engine gearbox. There are few specialized vehicles that use a single engine, an external power source, or power from a battery. The speed ratio of most power takeoff devices is the ratio of the rotating speed of the output end of the power takeoff device to the rotating speed of the engine, the structure of the power takeoff device is simple, the speed ratio is influenced by the arrangement of the gear train of the engine, when the arrangement of the gear train of the engine is determined, the transmission ratio of the engine is also determined, and if a certain fixed transmission ratio needs to be provided, a customer needs to inform an engine manufacturer of the application and the arrangement of the power takeoff device in advance. That is, the power takeoff used for the engine at present can only provide a fixed speed ratio, and the universality is low. When the user's demand changes, the engine gear train may need to be changed or another power take-off may need to be sought again.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a back power takeoff device of interchangeable velocity ratio is provided, can realize the function of different velocity ratios.
The utility model discloses a solve above-mentioned technical problem, take following technical scheme:
a power take-off with interchangeable speed ratios comprising: a shell, a transmission end gear train and a transmission shaft which is rotatably arranged with the shell,
an outer gear ring is fixedly arranged in the shell, the transmission end gear train is set to be a planetary gear train, the planetary gear train comprises a sun gear, planet gears and a planet carrier, the planet carrier is rotatably provided with a plurality of planet gears, and the planet gears are respectively meshed with the outer gear ring and the sun gear;
the transmission shaft includes first transmission shaft and secondary drive axle, the one end of first transmission shaft with sun gear fixed connection, the other end stretches out the casing forms the first end that stretches out, the one end of secondary drive axle with planet carrier fixed connection, the other end stretches out the casing forms the second and stretches out the end.
Preferably, the housing includes: the front cover and the rear cover are respectively positioned on two opposite sides of the mounting body and fixedly connected through bolts.
Preferably, the inner wall of the mounting body is provided with gear teeth to form the outer gear ring.
Preferably, the first extending end of the first transmission shaft is set as an input end of the power take-off, and the second extending end of the second transmission shaft is set as an output end of the power take-off.
Preferably, the second extending end of the second transmission shaft is set as an input end of the power take-off, and the first extending end of the first transmission shaft is set as an output end of the power take-off.
Preferably, the input end of the power take-off device is connected with a transmission end gear meshed with a gear train of the engine through a spline.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an outer ring gear in its casing of power takeoff device is fixed, sun gear and planet carrier relative motion, first transmission shaft and sun gear fixed mounting, secondary drive axle and planet carrier fixed mounting, can select first transmission shaft or secondary drive axle as required as the input during the power takeoff device installation, when first transmission shaft is as the input and when the secondary drive axle is as the input, the drive ratio of power takeoff device is different, the function that same power takeoff device has different velocity ratios has been realized, make things convenient for the engine complete machine gear train to arrange, the commonality is high, can satisfy different customers' demand.
In addition, the input end of the power take-off device is connected with a transmission end gear meshed with the engine gear train through a spline, and the power take-off device is convenient to detach and install.
Drawings
FIG. 1 is a perspective view of a power take-off with changeable speed ratio of the present invention;
FIG. 2 is a schematic diagram of a cross-sectional structure of the power take-off with changeable speed ratio of the present invention;
FIG. 3 is a schematic diagram of an exploded structure of the power take-off with changeable speed ratio of the present invention;
in the figure: 1-shell, 11-front cover, 12-mounting body, 13-rear cover, 2-external gear ring, 3-sun gear, 4-planet gear, 5-planet carrier, 6-first transmission shaft, 7-second transmission shaft, 8-transmission end gear and 9-bolt.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided in conjunction with the accompanying drawings and specific embodiments for further understanding the objects, aspects and functions of the present invention, but not for limiting the scope of the appended claims.
1-3, a power take-off with an interchangeable speed ratio, comprising: casing 1, transmission end gear train and with the casing rotation installation the transmission shaft, 1 fixed settings is equipped with outer ring gear 2 in the casing, the transmission end gear train of this embodiment sets up to planetary gear train, above-mentioned planetary gear train includes sun gear 3, planet wheel 4 and planet carrier 5, rotates on the planet carrier 5 and installs a plurality of planet wheels 4, a plurality of planet wheels 4 respectively with outer ring gear 2 and 3 transmission meshing of sun gear. The transmission shaft includes first transmission shaft 6 and second transmission shaft 7, and the one end and the sun gear 3 fixed connection of first transmission shaft 6, the other end stretch out casing 1 and form first end of stretching out, and sun gear 3 and first transmission shaft 6 integrative the setting in this example. One end of the second transmission shaft 7 is fixedly connected with the planet carrier 5, and the other end of the second transmission shaft extends out of the shell 1 to form a second extending end.
The power take-off device with variable speed ratio of the embodiment comprises a housing 1: the front cover 11, the mounting body 12 and the rear cover 13, the front cover 11 and the rear cover 13 are respectively located at two opposite sides of the mounting body 12, and the front cover 11, the mounting body 12 and the rear cover 13 are fixedly connected together through bolts 9. A bearing is arranged between the first transmission shaft 6 and the front cover 11, and a first extending end of the first transmission shaft 6 passes through and extends out of the front cover 11. A bearing is arranged between the second transmission shaft 7 and the rear cover 13, and a second extending end of the second transmission shaft 7 penetrates through and extends out of the rear cover 13.
The front cover 11, the mounting body 12 and the rear cover 13 of the variable-speed-ratio power takeoff device are connected through bolts, so that the power takeoff device is convenient to detach and mount and easy to store.
The inner wall of the mounting body 12 of the embodiment is provided with gear teeth to form the outer gear ring 2.
When the power take-off device is installed and connected with the engine, if the first extending end of the first transmission shaft 6 is set as the input end of the power take-off device, the second extending end of the second transmission shaft 7 is set as the output end of the power take-off device. The first protruding end of the first transmission shaft 6 is connected with a transmission end gear 8 through a spline, and the transmission end gear 8 is meshed with a gear of an engine gear train.
When the power take-off device is installed and connected with the engine, if the second extending end of the second transmission shaft 7 is set as the input end of the power take-off device, the first extending end of the first transmission shaft 6 is set as the output end of the power take-off device. The second extending end of the second transmission shaft 7 is connected with a transmission end gear 8 through a spline, and the transmission end gear 8 is meshed with the engine gear train. The input end of the power take-off device is connected with a transmission end gear meshed with the gear train of the engine through a spline, so that the power take-off device is convenient to detach and install.
The utility model discloses a can select first transmission shaft or secondary drive axle as required during power takeoff installation as the input, when first transmission shaft as the input and when the secondary drive axle is as the input, power takeoff's drive ratio is different under two kinds of circumstances, has realized that same power takeoff has the function of different velocity ratios, makes things convenient for the engine complete machine gear train to arrange, and the commonality is high, can satisfy different customers' demand.
The present invention is not limited to the above embodiments, and all improvements made based on the concept, principle, structure and method of the present invention are all within the protection scope of the present invention.
Claims (6)
1. A power take-off with interchangeable speed ratios comprising: a shell, a transmission end gear train and a transmission shaft which is rotatably arranged with the shell,
an outer gear ring is fixedly arranged in the shell, the transmission end gear train is set to be a planetary gear train, the planetary gear train comprises a sun gear, planet gears and a planet carrier, the planet carrier is rotatably provided with a plurality of planet gears, and the planet gears are respectively meshed with the outer gear ring and the sun gear;
the transmission shaft includes first transmission shaft and secondary drive axle, the one end of first transmission shaft with sun gear fixed connection, the other end stretches out the casing forms the first end that stretches out, the one end of secondary drive axle with planet carrier fixed connection, the other end stretches out the casing forms the second and stretches out the end.
2. A ratio-interchangable power take off as defined in claim 1 wherein said housing includes: the front cover and the rear cover are respectively positioned on two opposite sides of the mounting body and fixedly connected through bolts.
3. A ratio-interchangable power take-off as claimed in claim 2 wherein said mounting body has gear teeth formed on an inner wall thereof to form said outer race.
4. A variable ratio power take off according to claim 1 wherein the first protruding end of the first drive shaft is provided as an input to the power take off and the second protruding end of the second drive shaft is provided as an output to the power take off.
5. A variable ratio power take off according to claim 1 wherein the second protruding end of the second drive shaft is provided as an input to the power take off and the first protruding end of the first drive shaft is provided as an output to the power take off.
6. A ratio take off as claimed in claim 4 or claim 5 wherein the input to the take off is splined to a drive end gear which engages the engine gear train.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012627.3U CN210397608U (en) | 2019-06-28 | 2019-06-28 | Power take-off device with changeable speed ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012627.3U CN210397608U (en) | 2019-06-28 | 2019-06-28 | Power take-off device with changeable speed ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210397608U true CN210397608U (en) | 2020-04-24 |
Family
ID=70353832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921012627.3U Active CN210397608U (en) | 2019-06-28 | 2019-06-28 | Power take-off device with changeable speed ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210397608U (en) |
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2019
- 2019-06-28 CN CN201921012627.3U patent/CN210397608U/en active Active
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