CN213511914U - Speed reducer of pure electric track tractor - Google Patents
Speed reducer of pure electric track tractor Download PDFInfo
- Publication number
- CN213511914U CN213511914U CN202022152810.2U CN202022152810U CN213511914U CN 213511914 U CN213511914 U CN 213511914U CN 202022152810 U CN202022152810 U CN 202022152810U CN 213511914 U CN213511914 U CN 213511914U
- Authority
- CN
- China
- Prior art keywords
- shaft
- box body
- gear
- bevel gear
- tractor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model relates to a decelerator specifically is pure electric rail tractor decelerator. The problem of current decelerator can't be applicable to pure electric rail tractor is solved. The speed reduction device of the pure electric track tractor comprises a box body; a straight gear shaft, a large straight gear, a large bevel gear and a small bevel gear are arranged in the box body; the wheel pair shaft of the tractor passes through the box body; two ends of the straight gear shaft are supported in the box body through bearings, one end of the straight gear shaft extends out of the box body, the large straight gear and the small bevel gear are fixed on the same shaft, the large straight gear is meshed with the straight gear shaft, and the large bevel gear is fixed on a wheel-to-shaft of the tractor and is meshed with the small bevel gear. The small bevel gear is provided with a wheel shaft, two ends of the wheel shaft of the small bevel gear are supported on the box body through bearings, and the large straight gear is sleeved on the wheel shaft of the small bevel gear through interference connection heat. The position where the wheel-axis shaft of the tractor penetrates through the box body is sleeved with a tapered roller bearing positioned on the box body. The track tractor can be applied to the track tractor for subway and tunnel construction, and also can be applied to other suitable application occasions.
Description
Technical Field
The utility model relates to a decelerator specifically is pure electric rail tractor decelerator.
Background
The pure electric track tractor is particularly suitable for construction operation in long and large tunnels, transportation of materials, tools and personnel in tunnel construction and line maintenance and traction of other unpowered track engineering vehicles. The traction running system of the pure electric track tractor relates to a speed reducing device, the existing speed reducing device cannot be suitable for the pure electric track tractor, and therefore the speed reducing device with the novel structure, the excellent performance, the safety and the reliability is designed, and the requirements for manufacturing and producing the pure electric track tractor are met.
Disclosure of Invention
The utility model provides a current decelerator can't be applicable to the problem of pure electric rail tractor, provides a pure electric rail tractor decelerator.
The utility model discloses an adopt following technical scheme to realize: the speed reduction device of the pure electric track tractor comprises a box body; a straight gear shaft, a large straight gear, a large bevel gear and a small bevel gear are arranged in the box body; the wheel pair shaft of the tractor passes through the box body; two ends of the straight gear shaft are supported in the box body through bearings, one end of the straight gear shaft extends out of the box body, the large straight gear and the small bevel gear are fixed on the same shaft, the large straight gear is meshed with the straight gear shaft, and the large bevel gear is fixed on a wheel-to-shaft of the tractor and is meshed with the small bevel gear. When the tractor works, the power of the motor is transmitted to the straight gear shaft through the universal shaft, is transmitted to the small bevel gear through the straight gear shaft and the first-stage speed reduction of the large straight gear, is transmitted to the small bevel gear through the large straight gear, and is transmitted to the wheel pair shaft of the tractor through the small bevel gear and the large bevel gear after the second-stage speed reduction of the small bevel gear and the large bevel gear, so that wheels are driven to rotate.
Furthermore, the bevel pinion is provided with a wheel shaft, two ends of the wheel shaft of the bevel pinion are supported on the box body through bearings, and the large spur gear is sleeved on the wheel shaft of the bevel pinion through interference connection heat, so that the compact structure is realized.
Because the gear drive in the speed reducer exerts axial force on the wheel pair shaft of the tractor, in order to overcome the influence of the axial force on the wheel pair shaft, a tapered roller bearing positioned on the box body is sleeved at the position where the wheel pair shaft of the tractor penetrates out of the box body.
Furthermore, the equal-top-clearance shrinkage teeth and the spiral arc tooth bevel gears which are made of Grisson teeth are arranged between the small bevel gear and the large bevel gear for orthogonal transmission, and the bevel gear has the advantages that as the tooth lines on the tooth crowns of the bevel gears are arcs, the bearing capacity is high, the operation is stable, the noise is low, and the bevel gear is not sensitive to installation errors and deformation.
In order to facilitate the assembly of the speed reducer, the difference exists between the installation center distance between the straight gear shaft and the large straight gear and the standard center distance between the two gears, therefore, the straight gear shaft adopts involute cylindrical negative displacement straight gears, the large straight gear is an involute positive displacement gear, and the straight gear shaft and the large straight gear are in unequal displacement gear transmission (also called angle displacement gear transmission). The involute cylinder straight tooth transmission has the advantages of stable power transmission, low noise, high bearing capacity and simple processing technology.
The box body is composed of an upper box body and a lower box body (namely, the box body adopts an upper and lower split structure), and the straight gear shaft is positioned at the upper part of the large straight gear and supported on the upper box body. An observation hole is formed in the top of the upper box body, an observation hole cover is fixed on the observation hole, and the operation condition in the speed reducer can be observed when the observation hole cover is detached.
To transmit larger torque, the transmission ratio must be increased, and the speed reducing device adopts a two-stage speed reducing structure, and the transmission ratio reaches 7.9. Because the transmission torque is large, the large straight gear is higher, and the lubrication of the bearings at the two ends of the straight gear shaft is carried out by the splashing of the large bevel gear and the small bevel gear, the requirements cannot be met, therefore, an oil baffle plate capable of separating oil from the bearings at the two ends of the straight gear shaft is arranged below the observation hole cover of the upper box body, and the problem is well solved. The lubricating oil splashed by the operation of the large bevel gear and the small bevel gear lubricates the meshing of the straight gear shaft and the large straight gear, the lubricating oil splashed by the operation of the straight gear shaft and the large straight gear is distributed to the bearings at two ends of the straight gear shaft through the oil baffle plate to lubricate the bearings, and the lubricating oil flows to the bottom (oil tank) of the lower box body through the oil return hole of the upper box body.
The speed reducer has the advantages of compact structure, small volume, large transmission torque, stable transmission, low noise, novel structure, excellent performance, safety and reliability, has wide popularization prospect, can be widely applied to the track tractor for subway and tunnel construction, and can also be applied to other suitable application occasions.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a cross-sectional top view of fig. 1.
In the figure: 1-box body, 2-straight gear shaft, 3-big straight gear, 4-big bevel gear, 5-small bevel gear, 6-wheel-counter shaft, 7-tapered roller bearing, 8-observation hole cover and 9-oil baffle plate.
Detailed Description
The speed reducing device of the pure electric track tractor comprises a box body 1; a straight gear shaft 2, a large straight gear 3, a large bevel gear 4 and a small bevel gear 5 are arranged in the box body 1; the wheel pair shaft 6 of the tractor passes through the box body 1; two ends of the straight gear shaft 2 are supported on the box body 1 through bearings, one end of the straight gear shaft extends out of the box body 1, the large straight gear 3 and the small bevel gear 5 are fixed on the same shaft, the large straight gear 3 is meshed with the straight gear shaft 2, and the large bevel gear 4 is fixed on a wheel pair shaft 6 of the tractor and is meshed with the small bevel gear 5. The small bevel gear 5 is provided with a wheel shaft, two ends of the wheel shaft of the small bevel gear 5 are supported on the box body 1 through bearings, and the large straight gear 3 is sleeved on the wheel shaft of the small bevel gear 5 through interference connection heat. The position of the wheel pair shaft 6 of the tractor penetrating through the box body 1 is sleeved with a tapered roller bearing 7 positioned on the box body 1. The small bevel gear 5 and the big bevel gear 4 are orthogonally driven by the equal-top-clearance shrinkage gear and the spiral arc-tooth bevel gear which are made of Grignard teeth. The straight gear shaft 2 adopts involute cylinder negative modified straight teeth, the large straight gear 3 is an involute positive modified gear, and the straight gear shaft 2 and the large straight gear 3 are in transmission through modified gears with unequal displacement distances. The box body 1 is composed of an upper box body and a lower box body, and the straight gear shaft 2 is positioned at the upper part of the large straight gear 3 and is supported on the upper box body. An observation hole is arranged at the top of the upper box body, and an observation hole cover 8 is fixed on the observation hole. An oil baffle plate 9 which can divide the oil of the bearings at the two ends of the straight gear shaft 2 is arranged below the observation hole cover 8 of the upper box body. And reinforcing ribs are added at the flange of the bearing seat, so that the heat dissipation of the box body 1 is also facilitated. The end part of the straight gear shaft 2 extending out of the box body 1 is provided with a connecting flange so as to facilitate the connection of the speed reducer and the motor.
Claims (9)
1. A speed reduction device of a pure electric track tractor comprises a box body (1); it is characterized in that a straight gear shaft (2), a big straight gear (3), a big bevel gear (4) and a small bevel gear (5) are arranged in the box body (1); a wheel-shaft (6) of the tractor penetrates through the box body (1); two ends of a straight gear shaft (2) are supported on the box body (1) through bearings, one end of the straight gear shaft extends out of the box body (1), a large straight gear (3) and a small bevel gear (5) are fixed on the same shaft, the large straight gear (3) is meshed with the straight gear shaft (2), and a large bevel gear (4) is fixed on a wheel counter shaft (6) of the tractor and is meshed with the small bevel gear (5).
2. The speed reducer of the pure electric rail tractor according to claim 1, wherein the small bevel gear (5) is provided with a wheel shaft, two ends of the wheel shaft of the small bevel gear (5) are supported on the box body (1) through bearings, and the large spur gear (3) is sleeved on the wheel shaft of the small bevel gear (5) through interference connection heat.
3. Pure electric track tractor speed reduction device according to claim 1 or 2, characterized in that a tapered roller bearing (7) positioned on the box (1) is sleeved at the position where the wheel pair shaft (6) of the tractor penetrates out of the box (1).
4. The speed reducer of the pure electric rail tractor according to claim 3, wherein the small bevel gear (5) and the large bevel gear (4) are orthogonally driven by a gleason gear system constant top gap contracting gear and a spiral arc gear bevel gear.
5. The speed reducer of the pure electric track tractor according to claim 4, wherein the straight gear shaft (2) adopts involute cylindrical negative-displacement straight teeth, the large straight gear (3) is an involute positive-displacement gear, and the straight gear shaft (2) and the large straight gear (3) are in unequal-displacement gear transmission.
6. The pure electric rail tractor speed reduction device according to claim 5, wherein the box body (1) is composed of an upper box body and a lower box body, and the spur gear shaft (2) is positioned at the upper part of the large spur gear (3) and supported by the upper box body.
7. The pure electric rail tractor speed reduction device according to claim 6, characterized in that a viewing hole is arranged at the top of the upper box body and a viewing hole cover (8) is fixed on the viewing hole.
8. The pure electric rail tractor speed reduction device according to claim 7, characterized in that an oil baffle plate (9) capable of separating oil from bearings at both ends of the straight gear shaft (2) is arranged below the upper box body observation hole cover (8).
9. The pure electric rail tractor speed reduction device according to claim 8, wherein the end of the straight gear shaft (2) extending out of the box body (1) is provided with a connecting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022152810.2U CN213511914U (en) | 2020-09-27 | 2020-09-27 | Speed reducer of pure electric track tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022152810.2U CN213511914U (en) | 2020-09-27 | 2020-09-27 | Speed reducer of pure electric track tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213511914U true CN213511914U (en) | 2021-06-22 |
Family
ID=76462835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022152810.2U Active CN213511914U (en) | 2020-09-27 | 2020-09-27 | Speed reducer of pure electric track tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213511914U (en) |
-
2020
- 2020-09-27 CN CN202022152810.2U patent/CN213511914U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201509123U (en) | Hub motor system and lubricating system thereof | |
| CN205298483U (en) | Branch mailbox independent lubrication's locomotive reduction gear | |
| CN102371892B (en) | Integrated motor driving system | |
| CN207064621U (en) | A kind of low-noise automobile decelerator | |
| CN202451797U (en) | Traction gear box for high-speed motor train unit | |
| CN213511914U (en) | Speed reducer of pure electric track tractor | |
| CN101761609A (en) | Bidirectional output speed reducer | |
| CN105240497A (en) | Automobile transmission | |
| CN201027910Y (en) | Vertical output speed reducer with large transmission ratio | |
| CN202413416U (en) | Integral gate type steering drive front axle assembly | |
| CN204493651U (en) | For the axle gear box of railroad track vehicle | |
| CN201090675Y (en) | Gear reduction wheel drive device | |
| CN209781629U (en) | Novel rotary speed reducer | |
| CN201102469Y (en) | Rear axle for electric vehicle | |
| CN200958593Y (en) | Main reducer assembly of swing driving bridge for loader | |
| CN103206492A (en) | Grease-lubrication soft-start planetary differential reducer for bearings | |
| CN210821788U (en) | Coaxial electric drive system | |
| CN215621947U (en) | Driving mechanism of railway vehicle | |
| CN201041283Y (en) | Bi-directional drive oil lubrication pump | |
| CN201877944U (en) | Gear shift differential motor assembly of electric cars | |
| CN216618426U (en) | Anti-swing speed reducing mechanism | |
| CN217603312U (en) | Precise connecting assembly for transmission gear box | |
| CN218347888U (en) | Electric drive axle lubricating structure | |
| CN205632118U (en) | Get power converter assembly | |
| CN217421923U (en) | Automobile universal joint fork assembly capable of automatically lubricating and preventing collision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |