CN213017529U - Special speed ratio structure of gear box - Google Patents
Special speed ratio structure of gear box Download PDFInfo
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- CN213017529U CN213017529U CN202021421626.7U CN202021421626U CN213017529U CN 213017529 U CN213017529 U CN 213017529U CN 202021421626 U CN202021421626 U CN 202021421626U CN 213017529 U CN213017529 U CN 213017529U
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Abstract
The utility model discloses a special speed ratio structure of a gear box, which relates to the field of transmission devices, and comprises a box body, wherein a forward drive gear is fixedly arranged on an input shaft arranged in the box body, a forward clutch is arranged in the forward drive gear, a forward drive driving gear is sleeved on the input shaft in an empty way, the forward drive driving gear is meshed with a driven gear fixedly arranged on an output shaft, the driven gear is meshed with a reverse drive driving gear, a reverse drive driving gear is sleeved on a transmission shaft in an empty way, a reverse clutch is arranged in the reverse drive gear fixedly arranged on the transmission shaft, and an output shaft coupling is arranged on the output end of the output shaft and is used for; the forward transmission gear is meshed with the reverse transmission gear. The utility model has the advantages that: the diesel engine of guaranteeing current yacht, work ship, speed boat is not enough when the rotational speed, and the accessible is connected the gear box acceleration rate to satisfy high rotational speed advancing device's use operating mode.
Description
Technical Field
The utility model relates to a transmission's field, concretely relates to gear box special type velocity ratio structure.
Background
At present, high-rotation-speed propelling devices are selected for a large number of yachts, working boats, speed boats and the like, and when the rotation speed of the devices is higher than that of a diesel engine, a gear box is needed for increasing the speed to achieve the use working condition. Meanwhile, the marine gearbox has the requirement of forward and backward driving, and a forward driving transmission gear on the input shaft and a backward driving transmission gear on the transmission shaft form a transmission pair. The clutch is arranged in each transmission gear, when the vehicle runs forwards, the clutch is combined, and when the vehicle runs backwards, the clutch is combined. The center distance of the two transmission gears is determined according to the requirements of the transmission gears. If the gear box requires to be accelerated, when the excircle of the driving gear is larger than the transmission gear, the two driving gears of the reversing vehicle interfere with each other, so that the requirement of accelerating the gear box for the ship cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide a gear box special type velocity ratio structure, the excircle that adopts two driving gears is in the axial design of forking all around, has solved the problem of mutual interference between the driving gear of backing a car in the same direction as.
The purpose of the utility model is accomplished through following technical scheme: the special speed ratio structure of the gear box comprises a box body, wherein a forward driving gear is fixedly arranged on an input shaft arranged in the box body, a forward clutch is arranged in the forward driving gear, a forward driving gear is sleeved on the input shaft in an empty mode, the forward driving gear is meshed with a driven gear fixedly arranged on an output shaft, the driven gear is meshed with a reverse driving gear, a reverse driving gear is sleeved on a transmission shaft in an empty mode, a reverse clutch is arranged in the reverse driving gear fixedly arranged on the transmission shaft, and an output coupling is arranged on the output end of the output shaft and used for outputting power; the forward transmission gear is meshed with the reverse transmission gear.
As a further technical scheme, the input shaft is supported on the box body through a bearing A and a bearing B, the transmission shaft is supported on the box body through a bearing C and a bearing D, and the output shaft is supported on the box body through a bearing E and a bearing F; when the clutch is combined, the power is transmitted from the input shaft to the output shaft and is output through the output coupling, so that the working condition of the forward running is realized; when the reversing clutch is combined, power is transmitted to the output shaft from the input shaft through the transmission shaft and is output through the output coupling, and the working condition of reversing is realized.
As a further technical scheme, the forward driving gear is recessed inwards along the tooth width part of the forward driving gear to form a recessed area A, and the reverse driving gear is also recessed inwards along the tooth width part of the reverse driving gear to form a recessed area B; the rest part of the reversing driving gear extends into the recessed area A, and the rest part of the forward driving gear extends into the recessed area B, so that the excircles of the forward driving gear and the reversing driving gear are separated from each other.
The utility model has the advantages that: the problem of mutual interference caused by the fact that the excircle of the forward driving gear and the excircle of the reverse driving gear are larger than the forward driving gear and the reverse driving gear due to the fact that the transmission gears need to be meshed between the input shaft and the reverse shaft center line after the center line of the input shaft, the reverse shaft center line and the output shaft center of the gear box are determined is solved; the diesel engine of guaranteeing current yacht, work ship, speed boat is not enough when the rotational speed, and the accessible is connected the gear box acceleration rate to satisfy high rotational speed advancing device's use operating mode.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Description of reference numerals: the device comprises a box body 1, a reverse driving gear 2, a forward driving gear 3, an input shaft 4, a bearing A5, a forward driving transmission gear 6, a forward clutch 7, a bearing B8, a driven gear 9, an output shaft 10, an output coupling 11, a bearing C12, a reverse clutch 13, a reverse driving transmission gear 14, a transmission shaft 15, a bearing D16, a bearing E17, a bearing F18, a recessed area A19 and a recessed area B20.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example (b): as shown in attached figures 1-3, the special speed ratio structure of the gear box comprises a box body 1, wherein a forward driving gear 6 is fixedly arranged on an input shaft 4 arranged in the box body 1, a forward clutch 7 is arranged in the forward driving gear 6, a forward driving gear 3 is sleeved on the input shaft 4 in an empty manner, the forward driving gear 3 is meshed with a driven gear 9 fixedly arranged on an output shaft 10, the driven gear 9 is meshed with a reverse driving gear 2, the reverse driving gear 2 is sleeved on a transmission shaft 15 in an empty manner, a reverse clutch 13 is arranged in a reverse driving gear 14 fixedly arranged on the transmission shaft 15, and an output coupling 11 is arranged on an output end of the output shaft 10 and used for outputting power; the forward transmission gear 6 is meshed with the reverse transmission gear 14; the input shaft 4 is supported on the box body 1 through a bearing A5 and a bearing B8, the transmission shaft 15 is supported on the box body 1 through a bearing C12 and a bearing D16, and the output shaft 10 is supported on the box body 1 through a bearing E17 and a bearing F18; when the forward clutch 7 is combined, power is transmitted to an output shaft 10 from the input shaft 4 and is output through an output coupling 11, so that the forward working condition is realized; when the reverse clutch 13 is combined, the power is transmitted from the input shaft 4 to the output shaft 10 through the transmission shaft 15 and is output through the output coupling 11, so that the reverse working condition is realized.
As a further technical solution, the forward drive gear 3 is recessed inward along a tooth width portion thereof to form a recessed region a19, and the reverse drive gear 2 is also recessed inward along a tooth width portion thereof to form a recessed region B20; the rest part of the reverse driving gear 2 extends into the depressed area A19, and the rest part of the forward driving gear 3 extends into the depressed area B20, so that the excircles of the forward and reverse driving gears 3 and 2 are separated from each other.
The utility model discloses a theory of operation: when the forward clutch 7 is combined, power is transmitted to the driven gear 9 from the input shaft 4 through the forward driving gear 3, and simultaneously the output shaft 10 is driven to rotate and output through the output coupling 11, so that the forward working condition work is realized, and at the moment, because the reverse clutch 13 is not combined, the transmission shaft 15 is in an idle running state; when the forward clutch 7 is disengaged and the reverse clutch 13 is combined, power is transmitted to the reverse transmission gear 14 from the input shaft 4 through the forward transmission gear 6, meanwhile, the reverse driving gear 2 on the transmission shaft 15 is driven to rotate, the output shaft 10 is driven to rotate through the driven gear 9 and is output by the output coupling 11, and the work under the reverse working condition is realized. In order to avoid the mutual interference between the forward driving gear 3 and the reverse driving gear 2 due to the geometric dimensions, the outer circle of the forward driving gear 3, which is half of the tooth width, is made small to be in the shape of a shaft (i.e., a recessed area a19, as shown in fig. 2), so as to leave a space. Correspondingly, the position on the excircle of the reversing driving gear 2 corresponding to the depressed area A20 is kept unchanged, the excircle at the position corresponding to the tooth width part of the reversing driving gear 3 is made small and is changed into a shaft shape (namely, the depressed area B20, as shown in figure 3), so that the rest tooth width part of the reversing driving gear 2 extends into the depressed area A19, and the rest tooth width part of the reversing driving gear 3 extends into the depressed area B20, and the excircles of the reversing driving gear 3 and the reversing driving gear 2 are ensured to be separated from each other.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (3)
1. A special speed ratio structure of a gear box is characterized in that: the reversing gear comprises a box body (1), wherein a forward driving transmission gear (6) is fixedly arranged on an input shaft (4) arranged in the box body (1), a forward clutch (7) is arranged in the forward driving transmission gear (6), a forward driving gear (3) is sleeved on the input shaft (4) in an empty way, the forward driving gear (3) is meshed with a driven gear (9) fixedly arranged on an output shaft (10), the driven gear (9) is meshed with a reverse driving gear (2), the reverse driving gear (2) is sleeved on a transmission shaft (15) in an empty way, a reverse clutch (13) is arranged in a reverse driving transmission gear (14) fixedly arranged on the transmission shaft (15), and an output coupling (11) is arranged on the output end of the output shaft (10) and used for outputting power; the forward transmission gear (6) is meshed with the reverse transmission gear (14).
2. A gearbox special speed ratio structure according to claim 1, characterized in that: the input shaft (4) is supported on the box body (1) through a bearing A (5) and a bearing B (8), the transmission shaft (15) is supported on the box body (1) through a bearing C (12) and a bearing D (16), and the output shaft (10) is supported on the box body (1) through a bearing E (17) and a bearing F (18); when the forward clutch (7) is combined, power is transmitted to the output shaft (10) from the input shaft (4) and is output through the output coupling (11), so that the forward working condition is realized; when the reversing clutch (13) is combined, power is transmitted to the output shaft (10) from the input shaft (4) through the transmission shaft (15) and is output through the output coupling (11), and the working condition of reversing is realized.
3. A gearbox special speed ratio structure according to claim 1, characterized in that: the forward driving gear (3) is sunken inwards along the tooth width part of the forward driving gear to form a sunken area A (19), and the reverse driving gear (2) is also sunken inwards along the tooth width part of the reverse driving gear to form a sunken area B (20); the rest part of the reverse driving gear (2) extends into the depressed area A (19), and the rest part of the forward driving gear (3) extends into the depressed area B (20), so that the forward driving gear (3) and the excircle of the reverse driving gear (2) are mutually separated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021421626.7U CN213017529U (en) | 2020-07-17 | 2020-07-17 | Special speed ratio structure of gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021421626.7U CN213017529U (en) | 2020-07-17 | 2020-07-17 | Special speed ratio structure of gear box |
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| Publication Number | Publication Date |
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| CN213017529U true CN213017529U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021421626.7U Active CN213017529U (en) | 2020-07-17 | 2020-07-17 | Special speed ratio structure of gear box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853174A (en) * | 2020-07-17 | 2020-10-30 | 杭州萧山江南通用机械有限公司 | Special speed ratio structure of gear box |
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2020
- 2020-07-17 CN CN202021421626.7U patent/CN213017529U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853174A (en) * | 2020-07-17 | 2020-10-30 | 杭州萧山江南通用机械有限公司 | Special speed ratio structure of gear box |
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