CN220956705U - Gearbox auxiliary box jackshaft assembly suitable for high torque operating mode - Google Patents
Gearbox auxiliary box jackshaft assembly suitable for high torque operating mode Download PDFInfo
- Publication number
- CN220956705U CN220956705U CN202322615153.4U CN202322615153U CN220956705U CN 220956705 U CN220956705 U CN 220956705U CN 202322615153 U CN202322615153 U CN 202322615153U CN 220956705 U CN220956705 U CN 220956705U
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- intermediate shaft
- auxiliary box
- gearbox
- transmission gear
- weight
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- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 38
- 238000005242 forging Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005256 carbonitriding Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a shaft gear in an engine gearbox, and provides a gearbox auxiliary box intermediate shaft assembly suitable for high-torque working conditions, which aims to solve the problems that a welding mode and a welding process adopted between an auxiliary box transmission gear and an auxiliary box intermediate shaft crack under severe working conditions, and the welding stability between the auxiliary box transmission gear and the auxiliary box intermediate shaft is poor because the welding requirements of a high-torque transmission can not be met.
Description
Technical Field
The utility model relates to a shaft gear in an engine gearbox, in particular to a gearbox auxiliary box intermediate shaft assembly suitable for a high-torque working condition.
Background
Along with the development of the engine in the direction of low rotation speed and high torque, the design torque of the gear box with the double intermediate shafts and the main and auxiliary box structures produced at present is also larger and larger. The auxiliary box transmission gear and the auxiliary box intermediate shaft in the transmission auxiliary box intermediate shaft assembly are connected by adopting a welding process, and the welding mode adopts carbon dioxide and argon mixed gas for protection welding.
Therefore, a stable welding mode and welding process of the auxiliary box intermediate shaft assembly of the gearbox are required to meet the aims of transmitting large torque and improving the reliability and stability of the auxiliary box intermediate shaft.
Disclosure of utility model
The utility model aims to solve the problems that in the prior art, a welding mode and a welding process adopted between a secondary box transmission gear and a secondary box intermediate shaft are common in welding quality and poor in stability, and the welding requirement of a high-torque transmission cannot be met, so that the welding stability between the secondary box transmission gear and the secondary box intermediate shaft is poor, and provides a gearbox secondary box intermediate shaft assembly suitable for a high-torque working condition.
In order to achieve the above purpose, the technical solution provided by the present utility model is:
The utility model provides a gearbox auxiliary box jackshaft assembly suitable for high moment of torsion operating mode, auxiliary box jackshaft assembly includes jackshaft drive gear and auxiliary box jackshaft, jackshaft drive gear sets up the one end at auxiliary box jackshaft, the other end of auxiliary box jackshaft is provided with jackshaft axle tooth, its special character lies in: the intermediate shaft transmission gear and the auxiliary box intermediate shaft are formed by integrally forging, and a first transition fillet and a second transition fillet are respectively arranged at two ends of the root of the joint part between the intermediate shaft transmission gear and the auxiliary box intermediate shaft.
Further, the two end faces of the intermediate shaft transmission gear are respectively provided with a first weight-reducing ring groove and a second weight-reducing ring groove.
Further, the second weight-reducing ring groove is positioned at one end of the intermediate shaft transmission gear, which is close to the intermediate shaft teeth, and the second weight-reducing ring groove is connected with the intermediate shaft teeth of the intermediate shaft of the auxiliary box through the transition round angle.
Further, the first weight-reducing ring groove is positioned at one end of the intermediate shaft transmission gear, which is far away from the intermediate shaft teeth, and the first weight-reducing ring groove is connected with the intermediate shaft of the auxiliary box through a transition fillet and a transition step.
Further, a plurality of uniformly distributed weight reducing holes are formed in the first weight reducing ring groove and the second weight reducing ring groove.
Further, the first transition rounded corner and the second transition rounded corner are rounded corners of R5mm-R8 mm.
Further, intermediate shaft teeth of the intermediate shaft transmission gear and the intermediate shaft of the auxiliary box are processed by adopting a rolling shaving process.
The intermediate shaft assembly with the integrated structure directly forges two parts of the intermediate shaft transmission gear and the auxiliary box intermediate shaft, and the two ends of the root of the joint part between the intermediate shaft transmission gear and the auxiliary box intermediate shaft are respectively and preferably provided with the transition fillets of R5mm-R8mm, so that the stress concentration of the joint part between the intermediate shaft transmission gear and the auxiliary box intermediate shaft can be effectively eliminated, and the stability of the intermediate shaft assembly is improved.
If a transition fillet smaller than R5mm is adopted for transition, the root of the joint part between the intermediate shaft transmission gear and the auxiliary box intermediate shaft is weak, stress concentration is easy to generate, and the requirement of a working condition of large torque cannot be borne in the use process, so that the use is influenced;
If the transition fillet larger than R8mm is adopted for transition, the weight of the intermediate shaft assembly is increased, the volume is increased, the production cost is increased, and the green production and operation are not facilitated.
The beneficial effects of the utility model are as follows:
【1】 According to the auxiliary box intermediate shaft assembly of the gearbox, the intermediate shaft transmission gear and the auxiliary box intermediate shaft are forged into an integrated structure, so that the stability of the auxiliary box intermediate shaft assembly is enhanced, and the requirement of high-torque working condition design is met.
【2】 According to the utility model, the two ends of the root of the joint part between the intermediate shaft transmission gear and the auxiliary box intermediate shaft are respectively provided with the R5mm-R8mm transition fillets for transition treatment, so that the stress concentration of the joint part between the intermediate shaft transmission gear and the auxiliary box intermediate shaft is greatly eliminated, and the stability is improved.
【3】 The auxiliary box intermediate shaft assembly is suitable for the gearbox auxiliary box intermediate shaft assembly under the high-torque working condition, is novel in structure and reasonable in design, and has strong practicability.
【4】 According to the utility model, the intermediate shaft assembly is obtained by carrying out integrated treatment on the intermediate shaft transmission gear and the auxiliary box intermediate shaft, so that the gear alignment correction of the intermediate shaft transmission gear and the auxiliary box intermediate shaft during welding is avoided, the rejection rate caused by gear alignment deviation is greatly reduced, and the processing yield of the intermediate shaft assembly is improved.
【5】 When the intermediate shaft assembly is processed, the defect of welding seam cracking of the welding shaft caused by a welding process can be effectively eliminated, and the stability and the reliability of the intermediate shaft assembly are improved.
Drawings
FIG. 1 is a schematic illustration of a transmission sub-box countershaft assembly adapted for high torque conditions in accordance with the present utility model;
Fig. 2 is an enlarged partial view of a root end transition fillet structure of a joint portion between a counter shaft transmission gear and a counter shaft of a sub-tank in the embodiment.
Reference numerals: the device comprises a 1-auxiliary box intermediate shaft assembly, a 2-intermediate shaft transmission gear, a 3-auxiliary box intermediate shaft, a 4-first transition round angle, a 5-second transition round angle, a 6-first weight-reducing ring groove, a 7-second weight-reducing ring groove, 8-intermediate shaft teeth and 9-transition steps.
Detailed Description
As can be seen from fig. 1 and 2, the utility model provides a gearbox auxiliary box intermediate shaft assembly suitable for high torque working conditions, the auxiliary box intermediate shaft assembly 1 comprises an intermediate shaft transmission gear 2 and an auxiliary box intermediate shaft 3, the intermediate shaft transmission gear 2 is arranged at one end of the auxiliary box intermediate shaft 3, intermediate shaft teeth 8 are arranged at the other end of the auxiliary box intermediate shaft 3, the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 are formed by adopting integrated forging, a first transition round angle 4 and a second transition round angle 5 are respectively arranged at two ends of the root of a joint part between the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3, the first transition round angle 4 and the second transition round angle 5 are preferably R5mm-R8mm transition round angles, so that stress concentration of joint parts between the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 can be effectively eliminated, and the stability of the intermediate shaft assembly is improved. If a transition fillet smaller than R5mm is adopted for transition, the root of the joint part between the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 is weak, stress concentration is easy to generate, and the requirement of a working condition of large torque cannot be born in the use process, so that the use is influenced;
If the transition fillet larger than R8mm is adopted for transition, the weight of the intermediate shaft assembly is increased, the volume is increased, the production cost is increased, and the green production and operation are not facilitated.
The two end surfaces of the intermediate shaft transmission gear 2 are respectively provided with a first weight-reducing ring groove 6 and a second weight-reducing ring groove 7; the first weight-reducing ring groove 6 is connected with the auxiliary box intermediate shaft 3 through a first transition round angle 4 and a transition step 9; the second weight-reducing ring groove 7 is connected with the intermediate shaft teeth 8 of the intermediate shaft 3 of the auxiliary box through the second transition round angle 5; a plurality of uniformly distributed weight-reducing holes are formed in the first weight-reducing ring groove 6 and the second weight-reducing ring groove 7; the intermediate shaft transmission gear 2 and the intermediate shaft teeth 8 of the auxiliary box intermediate shaft 3 are processed by adopting a rolling shaving process.
The intermediate shaft assembly 1 in the utility model is specifically processed in the following way:
Firstly, forging a blank of a middle shaft assembly 1, and filling up a U-shaped welding notch between a middle shaft transmission gear 2 and a secondary box middle shaft 3 by adopting a die forging process; then, the intermediate shaft assembly 1 is subjected to left-right direction die separation, wherein the intermediate shaft transmission gear 2 is a left die separation, and the auxiliary box intermediate shaft 3 is a right die separation; then a U-shaped welding notch between the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 is machined in a machining mode; the peripheral parts of the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 are processed in a machining mode, shaft teeth at two ends of the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 are processed in a rolling shaving process, two ends of the root part of a joint part between the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 are respectively processed into a first transition fillet 4 and a second transition fillet 5 with the diameter of R5mm-R8mm, and the whole intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 after machining is processed in a carbonitriding mode; the intermediate shaft assembly 1 with the intermediate shaft transmission gear 2 and the auxiliary box intermediate shaft 3 being an integrated structure is obtained according to the above processing.
Claims (7)
1. Gearbox auxiliary box jackshaft assembly suitable for high torque operating mode, auxiliary box jackshaft assembly (1) include jackshaft drive gear (2) and auxiliary box jackshaft (3), jackshaft drive gear (2) set up the one end at auxiliary box jackshaft (3), the other end of auxiliary box jackshaft (3) is provided with jackshaft axle tooth (8), its characterized in that: the auxiliary box intermediate shaft is characterized in that the intermediate shaft transmission gear (2) and the auxiliary box intermediate shaft (3) are formed by adopting integrated forging, and a first transition fillet (4) and a second transition fillet (5) are respectively arranged at two ends of the root of the joint part between the intermediate shaft transmission gear (2) and the auxiliary box intermediate shaft (3).
2. The gearbox sub-gearbox countershaft assembly for high torque conditions of claim 1 wherein: the two end surfaces of the intermediate shaft transmission gear (2) are respectively provided with a first weight-reducing ring groove (6) and a second weight-reducing ring groove (7).
3. The gearbox sub-gearbox countershaft assembly adapted for use in high torque conditions of claim 2 wherein: the second weight-reducing ring groove (7) is positioned at one end, close to the intermediate shaft teeth (8), of the intermediate shaft transmission gear (2), and the second weight-reducing ring groove (7) is connected with the intermediate shaft teeth (8) of the intermediate shaft (3) of the auxiliary box through the second transition round angle (5).
4. A gearbox sub-gearbox intermediate shaft assembly adapted for high torque conditions according to claim 3, wherein: the first weight-reducing ring groove (6) is positioned at one end of the intermediate shaft transmission gear (2) far away from the intermediate shaft gear (8), and the first weight-reducing ring groove (6) is connected with the auxiliary box intermediate shaft (3) through a first transition round angle (4) and a transition step (9).
5. The gearbox sub-gearbox countershaft assembly for use in high torque conditions of claim 4 wherein: and a plurality of uniformly distributed weight reducing holes are formed in the first weight reducing ring groove (6) and the second weight reducing ring groove (7).
6. The gearbox sub-gearbox countershaft assembly for use in high torque conditions of claim 5 wherein: the first transition fillet (4) and the second transition fillet (5) are R5mm-R8mm fillets.
7. The gearbox sub-gearbox countershaft assembly for use in high torque conditions of claim 6 wherein: the intermediate shaft transmission gear (2) and intermediate shaft teeth (8) of the auxiliary box intermediate shaft (3) are processed by adopting a rolling shaving process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322615153.4U CN220956705U (en) | 2023-09-26 | 2023-09-26 | Gearbox auxiliary box jackshaft assembly suitable for high torque operating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322615153.4U CN220956705U (en) | 2023-09-26 | 2023-09-26 | Gearbox auxiliary box jackshaft assembly suitable for high torque operating mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956705U true CN220956705U (en) | 2024-05-14 |
Family
ID=91026134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322615153.4U Active CN220956705U (en) | 2023-09-26 | 2023-09-26 | Gearbox auxiliary box jackshaft assembly suitable for high torque operating mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956705U (en) |
-
2023
- 2023-09-26 CN CN202322615153.4U patent/CN220956705U/en active Active
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