CN214946243U - Gear connection structure of gearbox - Google Patents
Gear connection structure of gearbox Download PDFInfo
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- CN214946243U CN214946243U CN202121268180.3U CN202121268180U CN214946243U CN 214946243 U CN214946243 U CN 214946243U CN 202121268180 U CN202121268180 U CN 202121268180U CN 214946243 U CN214946243 U CN 214946243U
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Abstract
The utility model discloses a gear connecting structure of a gearbox, which comprises a gearbox shell, wherein the gearbox shell comprises a main shell body, a lower mounting shell part extending downwards is formed on the right side of the main shell body, a box cover is fixed on the bottom surface of the lower mounting shell part, and a duplicate gear shaft and an input shaft are arranged between the box cover and the lower mounting shell part; the upper end of the input shaft is hinged to the top plate of the lower mounting shell part, and the lower end of the input shaft is hinged to the bottom plate of the box cover; the outer side wall of the upper end of the duplex gear shaft is fixed on the inner side wall of the inner ring of the upper tapered roller bearing, a mounting groove is formed on the bottom surface of the top plate of the lower mounting shell part, and the outer ring of the upper tapered roller bearing is fixed on the inner side wall of the mounting groove; an upper tapered roller bearing and a lower tapered roller bearing are respectively arranged at two ends of a duplex gear shaft, so that the tapered roller bearings are convenient to lubricate and radiate, an end cover is opened, and the axial clearance of the duplex gear shaft is convenient to adjust.
Description
The technical field is as follows:
the utility model relates to a technical field is made to the gearbox, and more specifically says and relates to a gear connection structure of gearbox.
Background art:
the dual gears of the existing electric fork gearbox are supported by a fixed shaft, and as shown in fig. 1, four deep groove ball bearings are arranged in the gears after being pressed together two by two, so that lubrication and heat dissipation of the bearings are not facilitated, axial clearance adjustment of the gears is influenced, and the structural performance is poor; during assembly, the input shaft and the input shaft are required to be mounted on the box cover in advance, and then the next step of mounting can be carried out, so that the assembly performance is poor.
The utility model has the following contents:
the utility model aims at overcoming prior art's not enough, providing a gear connection structure of gearbox, its last tapered roller bearing and lower tapered roller bearing install respectively at the both ends of duplex gear axle, and the lubrication and the heat dissipation of the tapered roller bearing of being convenient for, and open the end cover, the adjustment of the axle clearance of the duplex gear axle of being convenient for.
The utility model provides a technical problem's scheme is:
a gear connecting structure of a gearbox comprises a gearbox shell, wherein the gearbox shell comprises a main shell body, a lower mounting shell body extending downwards is formed on the right side of the main shell body, a box cover is fixed on the bottom surface of the lower mounting shell body, and a duplicate gear shaft and an input shaft are arranged between the box cover and the lower mounting shell body;
the upper end of the input shaft is hinged to the top plate of the lower mounting shell part, and the lower end of the input shaft is hinged to the bottom plate of the box cover;
the outer side wall of the upper end of the duplex gear shaft is fixed on the inner side wall of the inner ring of the upper tapered roller bearing, a mounting groove is formed on the bottom surface of the top plate of the lower mounting shell part, and the outer ring of the upper tapered roller bearing is fixed on the inner side wall of the mounting groove;
the lower end of the duplicate gear shaft is inserted and sleeved in a lower mounting through hole formed in a bottom plate of the box cover, an outer ring of the lower tapered roller bearing is fixed on the inner side wall of the lower mounting through hole, and the lower end of the duplicate gear shaft is fixed on an inner ring of the lower tapered roller bearing.
And an end cover is fixedly connected to the bottom surface of the bottom plate of the box cover at the lower mounting through hole through a bolt, and covers the lower mounting through hole.
An annular groove is formed in the edge portion of the top face of the end cover, the sealing ring is nested in the annular groove, and the sealing ring is clamped between the end cover and the bottom face of the bottom plate of the box cover.
The top plate of the lower mounting shell part is formed with a step mounting through hole, the bottom plate of the box cover right below the step mounting through hole is formed with a lower connecting through hole, the inner side walls of the lower parts of the lower connecting through hole and the step mounting through hole are both fixed with outer rings of the deep groove ball bearings, and the two ends of the input shaft are both fixed on the inner rings of the corresponding deep groove ball bearings.
And a lower end cover is fixed on the bottom surface of the bottom plate of the box cover and covers the lower connecting through hole.
A transmission gear part is formed on the outer side wall of the input shaft;
the lower part of the duplicate gear shaft is fixed with a transmission gear which is meshed with the transmission gear part.
And an upper transmission gear part is formed at the upper part of the duplex gear shaft.
The utility model discloses an outstanding effect is:
two tapered roller bearings of the double-gear shaft are respectively arranged at two ends of the double-gear shaft, so that the lubrication and the heat dissipation of the tapered roller bearings are facilitated, the end covers are opened, and the adjustment of the axial clearance of the double-gear shaft is facilitated.
Description of the drawings:
FIG. 1 is a partial schematic view of a prior art dual gear shaft during installation;
fig. 2 is a schematic view of a partial structure of the present invention.
The specific implementation mode is as follows:
in an embodiment, as shown in fig. 2, a gear connection structure of a transmission includes a transmission housing 10, where the transmission housing 10 includes a main housing 11, a lower mounting housing 12 extending downward is formed on a right side of the main housing 11, a cover 20 is fixed to a bottom surface of the lower mounting housing 12, and a dual gear shaft 30 and an input shaft 40 are disposed between the cover 20 and the lower mounting housing 12;
the upper end of the input shaft 40 is hinged on the top plate of the lower mounting shell part 12, and the lower end of the input shaft 40 is hinged on the bottom plate of the box cover 20;
the outer side wall of the upper end of the duplicate gear shaft 30 is fixed on the inner side wall of the inner ring of the upper tapered roller bearing 1, the bottom surface of the top plate of the lower mounting shell part 12 is provided with a mounting groove 13, and the outer ring of the upper tapered roller bearing 1 is fixed on the inner side wall of the mounting groove 13;
the lower end of the dual gear shaft 30 is inserted into a lower mounting through hole 21 formed in the bottom plate of the case cover 20, an outer ring of the lower tapered roller bearing 2 is fixed on the inner side wall of the lower mounting through hole 21, and the lower end of the dual gear shaft 30 is fixed on the inner ring of the lower tapered roller bearing 2.
Further, an end cover 60 is fixedly connected to the bottom surface of the bottom plate of the case cover 20 at the lower mounting through hole 21 through a bolt, and the end cover 60 covers the lower mounting through hole 21.
Further, an annular groove is formed on the top side of the end cover 60, the sealing ring 3 is nested in the annular groove, and the sealing ring 3 is clamped between the end cover 60 and the bottom surface of the bottom plate of the box cover 20.
Further, a stepped mounting through hole 121 is formed in a top plate of the lower mounting housing portion 12, a lower connecting through hole 22 is formed in a bottom plate of the case cover 20 directly below the stepped mounting through hole 121, outer rings of the deep groove ball bearings 4 are fixed to inner side walls of lower portions of the lower connecting through hole 22 and the stepped mounting through hole 121, and two ends of the input shaft 40 are fixed to inner rings of the corresponding deep groove ball bearings 4.
Further, a lower cover 50 is fixed to the bottom surface of the bottom plate of the case cover 20, and the lower cover 50 covers the lower connecting through hole 22.
Further, a transmission gear portion 41 is formed on an outer side wall of the input shaft 40;
a transmission gear 31 is fixed to the lower portion of the dual gear shaft 30, and the transmission gear 31 is engaged with the transmission gear portion 41.
Further, an upper transmission gear portion 32 is formed at an upper portion of the duplicate gear shaft 30.
In the present embodiment, when assembling, the end cover 60 can be detached, and since the two ends of the dual gear shaft 30 are fixed to the inner rings of the upper tapered roller bearing 1 and the lower tapered roller bearing 2, the axial gap of the dual gear shaft 30 can be adjusted, which is convenient for adjustment.
Meanwhile, the single upper tapered roller bearing 1 and the single lower tapered roller bearing 2 are adopted to be connected with the duplicate gear shaft 30, so that the lubricating and heat dissipating effects are good.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (7)
1. A gear connection structure of a transmission, comprising a transmission case (10), characterized in that: the transmission case (10) comprises a main case (11), a lower mounting case (12) extending downwards is formed on the right side of the main case (11), a case cover (20) is fixed on the bottom surface of the lower mounting case (12), and a duplicate gear shaft (30) and an input shaft (40) are arranged between the case cover (20) and the lower mounting case (12);
the upper end of the input shaft (40) is hinged on the top plate of the lower mounting shell part (12), and the lower end of the input shaft (40) is hinged on the bottom plate of the box cover (20);
the outer side wall of the upper end of the duplicate gear shaft (30) is fixed on the inner side wall of the inner ring of the upper tapered roller bearing (1), a mounting groove (13) is formed in the bottom surface of a top plate of the lower mounting shell part (12), and the outer ring of the upper tapered roller bearing (1) is fixed on the inner side wall of the mounting groove (13);
the lower end of the duplicate gear shaft (30) is inserted into a lower mounting through hole (21) formed in a bottom plate of the box cover (20), an outer ring of the lower tapered roller bearing (2) is fixed on the inner side wall of the lower mounting through hole (21), and the lower end of the duplicate gear shaft (30) is fixed on an inner ring of the lower tapered roller bearing (2).
2. A gear connecting structure of a transmission according to claim 1, wherein: an end cover (60) is fixedly connected to the bottom surface of the bottom plate of the box cover (20) at the lower mounting through hole (21) through a bolt, and the end cover (60) covers the lower mounting through hole (21).
3. A gear connecting structure of a transmission according to claim 2, wherein: an annular groove is formed in the edge portion of the top face of the end cover (60), the sealing ring (3) is nested in the annular groove, and the sealing ring (3) is clamped between the end cover (60) and the bottom face of the bottom plate of the box cover (20).
4. A gear connecting structure of a transmission according to claim 1, wherein: the novel deep groove ball bearing is characterized in that a step mounting through hole (121) is formed in a top plate of the lower mounting shell portion (12), a lower connecting through hole (22) is formed in a bottom plate of the box cover (20) right below the step mounting through hole (121), outer rings of the deep groove ball bearings (4) are fixed on inner side walls of the lower portions of the lower connecting through hole (22) and the step mounting through hole (121), and two ends of the input shaft (40) are fixed on inner rings of the corresponding deep groove ball bearings (4).
5. A gear connecting structure of a transmission according to claim 4, wherein: and a lower end cover (50) is fixed on the bottom surface of the bottom plate of the box cover (20), and the lower end cover (50) covers the lower connecting through hole (22).
6. A gear connecting structure of a transmission according to claim 1, wherein: a transmission gear part (41) is formed on the outer side wall of the input shaft (40);
the lower part of the duplicate gear shaft (30) is fixed with a transmission gear (31), and the transmission gear (31) is meshed with a transmission gear part (41).
7. A gear connecting structure of a transmission according to claim 1, wherein: an upper transmission gear part (32) is molded on the upper part of the duplicate gear shaft (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121268180.3U CN214946243U (en) | 2021-06-08 | 2021-06-08 | Gear connection structure of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121268180.3U CN214946243U (en) | 2021-06-08 | 2021-06-08 | Gear connection structure of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214946243U true CN214946243U (en) | 2021-11-30 |
Family
ID=79052429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121268180.3U Active CN214946243U (en) | 2021-06-08 | 2021-06-08 | Gear connection structure of gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214946243U (en) |
-
2021
- 2021-06-08 CN CN202121268180.3U patent/CN214946243U/en active Active
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