CN202451797U - Traction gear box for high-speed motor train unit - Google Patents
Traction gear box for high-speed motor train unit Download PDFInfo
- Publication number
- CN202451797U CN202451797U CN2011205798096U CN201120579809U CN202451797U CN 202451797 U CN202451797 U CN 202451797U CN 2011205798096 U CN2011205798096 U CN 2011205798096U CN 201120579809 U CN201120579809 U CN 201120579809U CN 202451797 U CN202451797 U CN 202451797U
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- gear
- box
- traction
- bearing
- gear box
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Abstract
The utility model relates to a part of a motor train unit, provides a traction gear box for a high-speed motor train unit and solves the problem that an existing traction gear box is small in transmitted power, low in running speed, heavy and poor in transmission stationarity and sealing performance. The traction gear box comprises a gear shaft installed in a gear box and a gear meshed with the gear shaft, wherein the gear is in interference connection with an axle. The traction gear box is characterized in that an upper box body and a lower box body of the gear box are provided with reinforcing ribs, a box dividing face between the upper box body and the lower box body is arranged obliquely, and a partition plate is added on an inner wall of the lower box body. Two ends of an input shaft are matched with four-point contact ball bearings through cylindrical bearings for use, and two ends of an output shaft are provided with tapered roller bearings. The transmission between the gear shaft and the gear is achieved through a bevel gear with a large helical angle. A bearing lubrication oil groove is arranged inside the gear box, and a labyrinth seal device is arranged at the connecting position between the input shaft and the output shaft and the box body. The traction gear box has the advantages of being large in transmitted power, high in running speed, strong in bearing capability, light in weight, good in transmission stationarity, high in reliability and good in sealing performance.
Description
Technical field
The utility model relates to the rail motor set parts, and particularly a kind of EMU is used traction gearbox.
Background technique
Rail motor set are the parts that rail motor set critical piece one drives bogie with traction gearbox, and rail motor set drive traction gearbox through the traction electric machine that is contained on the bogie, produce moment of torsion and make wheel to rotating.Traction gearbox adopts the one-level deceleration system,, is passed to power on the gear through pinion shaft through the coupling transferring power by traction electric machine, and bore directly connects with axletree, passes to axletree to power, and axletree is passed to wheel to power again.Traction gearbox plays crucial effects to the overall performance of rail motor set, especially EMU.In order to improve the travelling comfort of train operation, necessary stable drive reduces noise; In order to reduce the abrasion of wheel track, must adopt lightweight construction, reduce the right unsprung weight of motive power wheel, improve the operation dynamic performance and the mechanical load of motor-car running part and superstructure, require reliability high, do not allow leakage of oil.Existing traction gearbox transmitted power is little, running speed is low, Heavy Weight, poor, the poor sealing of transmission stability, can not satisfy the working condition requirement of EMU.
The model utility content
The purpose of the utility model just is to overcome the shortcoming of existing technology, and a kind of traction gearbox of EMU is provided, and solves that existing traction gearbox transmitted power is little, running speed is low, Heavy Weight, transmission stability are poor, the problem of poor sealing.
The utility model is realized through following technological scheme:
A kind of EMU is used traction gearbox; Comprise: be installed in the gear shaft in the said gear-box; With the gear that said gear shaft is meshed, said gear and axletree interference fit joint is characterized in that: the upper box and the lower box of said gear-box are equipped with stiffening rib; The flask joint of said upper box and said lower box adopts and is in tilted layout, and sets up dividing plate at said lower box inwall.
The bearing at said gear shaft two ends adopts cylindrical bearing and four-point contact ball to be used, and the bearing at said axletree two ends adopts tapered roller bearing.
Said upper box and said lower box all adopt high-strength cast aluminium alloy material to manufacture.
Said gear shaft and said gear adopt the helical gear transmission of large helix angle.
Said gear-box is provided with the mazy type mechanical seal device at input shaft and output shaft and casing connection place.
Said gear case body inside is provided with the bearing lubrication oil groove.
The utlity model has following advantage and beneficial effect:
Because adopt the transmission of one-level helical gear, helical gear adopts big helix angle, and carries out helix angle correction of the flank shape and profile of tooth axial modification, has improved bearing capacity, the transmission stability of gear, has reduced noise; Because gear case body adopts high-strength cast aluminium alloy material to manufacture, and has satisfied the requirement of lightweight construction; Owing on the casing stiffening rib is arranged, has increased rigidity, heat radiation and the resistance to shock of casing; Owing to increased dividing plate at box house, reduced the churning loss of gear when running up; Because casing adopts the form of the flask joint that is in tilted layout, and makes housing structure reasonable, formed loss of weight and strengthened installing the optimum scheme between the rigidity; Because arranging, the gearbox high-speed axle bearing adopt cylindrical bearing and four-point contact ball to be used; Cylindrical bearing is used for bearing radial force; Four-point contact ball is used to bear axial force; Bearing just can bear whole active forces like this, and the rigidity requirement to aluminium alloy box can reduce relatively then; Because gear-box output terminal bearing selects tapered roller bearing for use according to spatial position and stressing conditions, satisfy high-revolving requirement by the particular design of bearing; Since be provided with the mazy type mechanical seal device at input shaft and output shaft and casing connection place, simple in structure, good seal performance.Owing to be provided with the bearing lubrication oil groove in gear case body inside, guaranteed that bearing lubrication is abundant.The utility model is as the critical piece of EMU, have that transmitted power is big, running speed is high, bearing capacity is strong, in light weight, transmission stability good, reliability is high, the advantage of good airproof performance.
Description of drawings
Fig. 1 for EMU with traction gearbox structural representation (sectional view);
Fig. 2 for EMU with traction gearbox form structure schematic representation;
Fig. 3 is a box house diaphragm structure schematic representation.
The utility model is described in detail through embodiment below in conjunction with accompanying drawing:
Embodiment
Like Fig. 1,2, shown in 3; A kind of EMU is used traction gearbox; Comprise: be installed in the gear shaft 1 in the said gear-box, with the gear 2 that said gear shaft 1 is meshed, said gear 2 and axletree 10 interference fit joint; The upper box 6 and the lower box 7 of said gear-box are equipped with stiffening rib 8, to increase rigidity, heat radiation and the resistance to shock of casing; Said gear shaft 1 and axletree 10 are provided with mazy type mechanical seal device 11 with the casing connection place, and be simple in structure, good seal performance.For rigidity is installed in weight reduction and reinforcement, said upper box 6 is in tilted layout with the flask joint A employing of said lower box 7; In order to reduce the churning loss of gear when running up, set up dividing plate 9 at said lower box 7 inwalls.Abundant in order to have guaranteed bearing lubrication, be provided with bearing lubrication oil groove 12 at said upper box 6 with lower box 7 inside.
The bearing at said gear shaft 1 two ends adopts cylindrical bearing 3 and four-point contact ball 4 respectively, and the bearing at said axletree 10 two ends adopts tapered roller bearing 5.
Said upper box 6 all adopts high-strength cast aluminium alloy material to manufacture with said lower box 7.
The helical gear transmission of said gear shaft 1 and said gear 2 employing large helix angles.
Claims (5)
1. an EMU is used traction gearbox; Comprise: the gear shaft (1) in the said gear case body; The gear (2) that is meshed with said gear shaft (1), said gear (2) and axletree (10) interference fit joint is characterized in that: the upper box of said gear-box (6) is equipped with stiffening rib (8) with lower box (7); Said upper box (6) is in tilted layout with flask joint (A) employing of said lower box (7), sets up dividing plate (9) at said lower box (7) inwall.
2. traction gearbox according to claim 1 is characterized in that: the bearing at said gear shaft (1) two ends adopts cylindrical bearing (3) and four-point contact ball (4) to be used, and the bearing at said axletree (10) two ends adopts tapered roller bearing (5).
3. traction gearbox according to claim 1 is characterized in that: said gear shaft (1) and said gear (2) adopt the helical gear transmission of large helix angle.
4. traction gearbox according to claim 1 is characterized in that: said gear shaft (1) and said axletree (10) are provided with mazy type mechanical seal device (11) with the casing connection place.
5. traction gearbox according to claim 1 is characterized in that: be provided with bearing lubrication oil groove (12) in said upper box (6) and lower box (7) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205798096U CN202451797U (en) | 2011-12-31 | 2011-12-31 | Traction gear box for high-speed motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205798096U CN202451797U (en) | 2011-12-31 | 2011-12-31 | Traction gear box for high-speed motor train unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451797U true CN202451797U (en) | 2012-09-26 |
Family
ID=46867663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205798096U Expired - Lifetime CN202451797U (en) | 2011-12-31 | 2011-12-31 | Traction gear box for high-speed motor train unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451797U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195127A (en) * | 2015-05-07 | 2016-12-07 | 中车北京南口机械有限公司 | Gear-box and rail vehicle |
| CN106481792A (en) * | 2016-11-08 | 2017-03-08 | 中车北京南口机械有限公司 | Gear-box for EMU |
| CN108443417A (en) * | 2018-04-13 | 2018-08-24 | 太原重工轨道交通设备有限公司 | 100% low-floor tramcar traction gearbox |
| CN109230797A (en) * | 2018-08-15 | 2019-01-18 | 浙江寿原机械有限公司 | Gear assembly for folding machine |
| CN110131389A (en) * | 2018-02-02 | 2019-08-16 | 日本电产三协株式会社 | Driving device |
| WO2020134510A1 (en) * | 2018-12-28 | 2020-07-02 | 中车戚墅堰机车车辆工艺研究所有限公司 | Gearbox with novel bearing configuration for railway vehicle |
-
2011
- 2011-12-31 CN CN2011205798096U patent/CN202451797U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195127A (en) * | 2015-05-07 | 2016-12-07 | 中车北京南口机械有限公司 | Gear-box and rail vehicle |
| CN106481792A (en) * | 2016-11-08 | 2017-03-08 | 中车北京南口机械有限公司 | Gear-box for EMU |
| CN110131389A (en) * | 2018-02-02 | 2019-08-16 | 日本电产三协株式会社 | Driving device |
| CN108443417A (en) * | 2018-04-13 | 2018-08-24 | 太原重工轨道交通设备有限公司 | 100% low-floor tramcar traction gearbox |
| CN108443417B (en) * | 2018-04-13 | 2023-06-27 | 太原重工轨道交通设备有限公司 | Traction gear box of 100% low-floor tramcar |
| CN109230797A (en) * | 2018-08-15 | 2019-01-18 | 浙江寿原机械有限公司 | Gear assembly for folding machine |
| WO2020134510A1 (en) * | 2018-12-28 | 2020-07-02 | 中车戚墅堰机车车辆工艺研究所有限公司 | Gearbox with novel bearing configuration for railway vehicle |
| US11920669B2 (en) | 2018-12-28 | 2024-03-05 | Crrc Qishuyan Institute Co., Ltd. | Gearbox with bearing configuration for rail vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |