CN220956680U - Transmission countershaft assembly and transmission - Google Patents
Transmission countershaft assembly and transmission Download PDFInfo
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- CN220956680U CN220956680U CN202322702851.8U CN202322702851U CN220956680U CN 220956680 U CN220956680 U CN 220956680U CN 202322702851 U CN202322702851 U CN 202322702851U CN 220956680 U CN220956680 U CN 220956680U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 49
- 238000010276 construction Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 13
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 241001391944 Commicarpus scandens Species 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a transmission auxiliary shaft assembly and a transmission, which relate to the field of transmission auxiliary shaft assemblies, and adopt the following scheme: the auxiliary shaft comprises a first shaft section and a second shaft section, the first shaft section is detachably connected with the second shaft section, and a reverse gear and a first gear are arranged on the second shaft section. The utility model can avoid replacing the whole auxiliary shaft after the first gear and the reverse gear on the auxiliary shaft are damaged, and reduce the maintenance cost.
Description
Technical Field
The utility model relates to the field of transmission auxiliary shaft assemblies, in particular to a transmission auxiliary shaft assembly and a transmission.
Background
The transmission is provided with an input shaft, a countershaft, a main shaft, a planetary mechanism and the like, the planetary mechanism is connected with a transmission shaft of the whole vehicle through an output shaft, power is sequentially transmitted to the main shaft through the input shaft, the countershaft and a main shaft gear, and the main shaft is transmitted to the planetary mechanism to output power through the output shaft of the planetary mechanism; the function of the transmission mainly comprises the following three aspects: changing the running speed of the vehicle according to the road surface condition and the requirement of the running condition change to provide proper driving force; cutting off or transmitting the power of the engine as required, so that the engine can effectively output power or idle speed; through gear shifting, the power output direction of the vehicle is changed, and forward running and reverse running are realized.
In the prior art, a reverse gear, a first gear, a second gear, a third gear, a fourth gear and a fifth gear are arranged on a countershaft, the third gear, the fourth gear, the fifth gear and the transmission gear are arranged on the countershaft through long flat keys, and in order to enhance strength, the first gear and the reverse gear are made into a longer gear and are arranged into an integrated structure with the countershaft.
Some working vehicles such as heavy dump trucks have long-distance heavy-duty climbing conditions, a first gear or a reverse gear is frequently used for a long time, the first gear and the reverse gear of the transmission bear the greatest torque, after long-time working, the failure rate of the first gear and the reverse gear is high, when the first gear and the reverse gear on the auxiliary shaft are damaged, the whole auxiliary shaft needs to be replaced, and the maintenance cost is high.
Disclosure of utility model
In order to solve the technical problem that the transmission is high in maintenance cost due to the fact that a first gear and a reverse gear on a countershaft are damaged in the prior art, the utility model provides a transmission countershaft assembly and a transmission, which can avoid replacing the whole countershaft after the first gear and the reverse gear on the countershaft are damaged, and reduce the maintenance cost.
In order to solve the technical problems, in a first aspect, the utility model provides a transmission auxiliary shaft assembly, which comprises an auxiliary shaft, wherein the auxiliary shaft comprises a first shaft section and a second shaft section, the first shaft section is detachably connected with the second shaft section, a reverse gear and a first gear are arranged on the second shaft section, and the reverse gear, the first gear and the second shaft section are of an integrated structure. The auxiliary shaft adopts a detachable sectional structure, so that the second shaft section can be directly replaced after the first gear and the reverse gear are damaged, the whole auxiliary shaft is not required to be replaced, and the maintenance cost is reduced.
Further, the first shaft section and the second shaft section are connected through a spline.
Further, a support bearing is sleeved on the auxiliary shaft and is positioned at the joint of the first shaft section and the second shaft section. Because the first shaft section and the second shaft section are connected through the spline, gaps exist, vibration exists in transmission, and the auxiliary shaft can be reduced by arranging the supporting bearings to support the auxiliary shaft.
Further, the support bearing is located on the first shaft section. The support bearing is arranged on the first shaft section, so that the need of replacing a new support bearing during replacing the second shaft section can be avoided, and the maintenance cost is further reduced.
Further, the first shaft section is connected with a three-gear, a four-gear, a five-gear and a transmission gear through long flat keys.
Furthermore, the first shaft section is also provided with a second gear, and the second gear and the first shaft section are of an integrated structure.
Further, a spline hole is formed in the end portion, close to the second shaft section, of the first shaft section, and a spline shaft is arranged in the end portion, close to the first shaft section, of the second shaft section. By arranging the spline hole on the first shaft section and the spline shaft on the second shaft section, on one hand, the installation arrangement structure of the existing transmission auxiliary shaft and gears on the auxiliary shaft can be maintained, and on the other hand, if the spline shaft is arranged at one end part of the shaft section, the stress of the root part of the spline shaft is larger and is easy to break because the change of the shaft diameter is larger.
Further, a front bearing is arranged at the end part of the first shaft section, which is far away from the second shaft section.
Further, the end of the shaft Duan Eryuan from the first shaft section is provided with a rear bearing.
In a second aspect, the present utility model provides a transmission, including a housing, and further including the transmission countershaft assembly described above, wherein a support plate is disposed on an inner wall of the housing, and the first shaft segment is rotatably disposed on the support plate through a support bearing. Support for the segmented layshaft is enhanced by the support plate and support bearing, reducing vibration.
From the above technical scheme, the utility model has the following advantages:
The utility model provides a transmission auxiliary shaft assembly and a transmission, wherein a detachable sectional structure is adopted for an auxiliary shaft, so that a second shaft section can be directly replaced after a first gear and a reverse gear of the auxiliary shaft are damaged, the whole auxiliary shaft is not required to be replaced, and the maintenance cost is reduced; because the first shaft section and the second shaft section are connected through the spline, a gap exists, so that transmission vibration exists, and the auxiliary shaft is supported by the support bearing, so that vibration can be reduced; the support bearing is arranged on the first shaft section, so that the need of replacing a new support bearing when the second shaft section is replaced can be avoided, and the maintenance cost is further reduced; the spline hole is formed in the first shaft section, and the spline shaft is arranged in the second shaft section, so that on one hand, the installation and arrangement structure of the existing transmission auxiliary shaft and gears on the auxiliary shaft can be maintained, and on the other hand, if the spline shaft is arranged at one end part of the shaft section, the stress of the root part of the spline shaft is larger and is easy to break due to larger change of the shaft diameter; support for the segmented layshaft is enhanced by the support plate and support bearing, reducing vibration.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.
Fig. 3 is a schematic structural diagram of a housing according to a second embodiment of the present utility model.
In the figure, 1, a front bearing; 2. a transmission gear; 3. a first shaft section; 4. a fifth gear; 5. a fourth gear; 6. a long flat key; 7. a third gear; 8. a support plate; 9. a support bearing; 10. a second shaft section; 11. a rear bearing; 12. a second gear; 13. a gear; 14. a reverse gear; 15. and (3) a spline shaft.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.
Detailed description of the preferred embodiments
As shown in fig. 1, the present embodiment provides a transmission countershaft assembly comprising a countershaft, a second gear 12, a third gear 7, a fourth gear 5, a fifth gear 4, a transfer gear 2, and first and reverse gears 13 and 14; the auxiliary shaft comprises a first shaft section 3 and a second shaft section 10, the first shaft section 3 is detachably connected with the second shaft section 10, a reverse gear 14 and a first gear 13 are arranged on the second shaft section 10, the reverse gear 14, the first gear 13 and the second shaft section 10 are of an integrated structure, in the specific embodiment, the first shaft section 3 is sequentially connected with a third gear 7, a fourth gear 5, a fifth gear 4 and a transmission gear 2 through a long flat key 6 along the direction far away from the second shaft section 10, the second gear 12 and the first shaft section 3 are of an integrated structure, the second gear 12 is closest to the second shaft section 10, in order to realize the support of the auxiliary shaft assembly by the transmission shell, a front bearing 1 is arranged at the end part of the first shaft section 3 far away from the second shaft section 10, and a rear bearing 11 is arranged at the end part of the second shaft section 10 far away from the first shaft section 3. The auxiliary shaft adopts a detachable sectional structure, so that the second shaft section 10 can be directly replaced after the first gear 13 and the reverse gear 14 are damaged, the whole auxiliary shaft is not required to be replaced, and the maintenance cost is reduced.
As shown in fig. 1, in order to achieve reliable power transmission, the first shaft section 3 and the second shaft section 10 are connected through a spline; because the first shaft section 3 and the second shaft section 10 are connected through the spline, gaps exist, transmission vibration exists, the support bearing 9 is sleeved on the junction of the first shaft section 3 and the second shaft section 10 on the auxiliary shaft, and the transmission shell can support the auxiliary shaft through the support bearing 9, so that vibration can be reduced; in order to further reduce the maintenance cost, in this embodiment, the support bearing 9 is located on the first shaft section 3, and the support bearing 9 is disposed on the first shaft section 3, so that the need for replacing a new support bearing 9 when replacing the second shaft section 10 can be avoided, thereby further reducing the maintenance cost.
As shown in fig. 1, in this embodiment, in order to enhance the connection strength of the first shaft section 3 and the second shaft section 10, an involute spline hole is formed at the end of the first shaft section 3 close to the second shaft section 10, and a spline shaft 15 is formed at the end of the second shaft section 10 close to the first shaft section 3; through setting up the splined hole on axle section one 3, set up spline shaft 15 on the axle section two 10, have following beneficial effect: on one hand, the existing installation arrangement structure of the gears arranged on the first shaft section 3 and the second shaft section 10 can be kept unchanged, and on the other hand, if the spline shaft 15 is arranged at the end part of the first shaft section 3, the root part of the spline shaft 15 is a position with abrupt diameter, so that the root part of the spline shaft 15 is larger in stress and easy to break.
Detailed description of the preferred embodiments
As shown in fig. 2 and 3, the present embodiment provides a transmission, including a housing, and further includes a transmission countershaft assembly in the first embodiment, in which a support plate 8 is disposed on an inner wall of the housing, and in the present embodiment, two sets of countershaft assemblies are included, the support plate 8 is correspondingly disposed at two positions, a first shaft segment 3 is rotatably disposed on the support plate 8 through a support bearing 9, and a front bearing 1 and a rear bearing 11 are also disposed on the housing to support the countershaft assemblies; support for the segmented layshaft is enhanced by support plate 8 and support bearing 9, reducing vibration.
From the above detailed description, it can be seen that the present utility model has the following advantages:
1. The auxiliary shaft adopts a detachable sectional structure, so that the second shaft section 10 can be directly replaced after the first gear and the reverse gear 14 are damaged, the whole auxiliary shaft is not required to be replaced, and the maintenance cost is reduced; because the first shaft section 3 and the second shaft section 10 are connected through the spline, gaps exist, so that transmission vibration exists, and the auxiliary shaft is supported by the support bearing 9, so that vibration can be reduced;
2. The support shaft is arranged on the first shaft section 3, so that the need of replacing a new support bearing 9 when the second shaft section 10 is replaced can be avoided, and the maintenance cost is further reduced;
3. By arranging the spline holes on the first shaft section 3 and arranging the spline shaft 15 on the second shaft section 10, on one hand, the installation arrangement structure of the auxiliary shaft of the existing transmission and gears on the auxiliary shaft can be maintained, on the other hand, if the spline shaft 15 is arranged at one end part of the shaft section, the stress at the root part of the spline shaft 15 is larger and is easy to break because of larger shaft diameter change;
4. support for the segmented layshaft is enhanced by support plate 8 and support bearing 9, reducing vibration.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a derailleur countershaft assembly, includes the countershaft, and its characterized in that, the countershaft includes axle section one (3) and axle section two (10), and axle section one (3) is connected with axle section two (10) can dismantle, is provided with reverse gear (14) and a gear (13) on axle section two (10), and reverse gear (14), a gear (13) and axle section two (10) are integrated into one piece structure.
2. A transmission countershaft assembly according to claim 1 in which the first shaft section (3) and the second shaft section (10) are splined.
3. A transmission countershaft assembly according to claim 2 in which the countershaft is provided with a support bearing (9) and the support bearing (9) is located at the junction of the first shaft section (3) and the second shaft section (10).
4. A transmission countershaft assembly according to claim 3, wherein the support bearing (9) is located on shaft segment one (3).
5. A transmission countershaft assembly according to any one of claims 2-4 wherein shaft segment one (3) is connected to three speed gears (7), four speed gears (5), five speed gears (4) and transfer gear (2) by long flat keys (6).
6. The transmission countershaft assembly according to claim 5 wherein the first shaft section (3) is further provided with a second gear (12), the second gear (12) being of unitary construction with the first shaft section (3).
7. A transmission countershaft assembly according to claim 6 wherein the end of shaft section one (3) adjacent to shaft section two (10) is provided with a splined bore and the end of shaft section two (10) adjacent to shaft section one (3) is provided with a splined shaft (15).
8. Transmission countershaft assembly according to claim 7, characterised in that the end of the first shaft section (3) remote from the second shaft section (10) is provided with a front bearing (1).
9. Transmission countershaft assembly according to claim 8, characterised in that the end of the second shaft section (10) remote from the first shaft section (3) is provided with a rear bearing (11).
10. A transmission comprising a housing, and further comprising a transmission countershaft assembly according to claim 1, wherein the housing inner wall is provided with a support plate (8), and the first shaft section (3) is rotatably arranged on the support plate (8) by means of a support bearing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322702851.8U CN220956680U (en) | 2023-10-09 | 2023-10-09 | Transmission countershaft assembly and transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322702851.8U CN220956680U (en) | 2023-10-09 | 2023-10-09 | Transmission countershaft assembly and transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956680U true CN220956680U (en) | 2024-05-14 |
Family
ID=91019352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322702851.8U Active CN220956680U (en) | 2023-10-09 | 2023-10-09 | Transmission countershaft assembly and transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956680U (en) |
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2023
- 2023-10-09 CN CN202322702851.8U patent/CN220956680U/en active Active
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