CN216128255U - Gear transmission system and low-floor tramcar - Google Patents
Gear transmission system and low-floor tramcar Download PDFInfo
- Publication number
- CN216128255U CN216128255U CN202121708418.XU CN202121708418U CN216128255U CN 216128255 U CN216128255 U CN 216128255U CN 202121708418 U CN202121708418 U CN 202121708418U CN 216128255 U CN216128255 U CN 216128255U
- Authority
- CN
- China
- Prior art keywords
- gear
- shaft
- transmission
- axle
- wheel
- 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
- Gear Transmission (AREA)
Abstract
The utility model provides a gear transmission system and a low-floor tramcar, wherein the gear transmission system is used for the low-floor tramcar and comprises a power device, a transmission assembly and a wheel mounting shaft; the axle of the low-floor tramcar is a hollow shaft, the transmission assembly is arranged in the axle, and the power device is in transmission connection with the transmission assembly; wheel installation axle and drive assembly flexonics, wheel installation axle is used for installing the wheel. According to the gear transmission system provided by the utility model, the transmission assembly is arranged in the hollow axle, the space under the vehicle body is skillfully utilized, and the layout is compact. In addition, wheel installation axle and transmission assembly flexonics, the last wheel of installing of wheel installation axle has reduced the impact load when the transmission. The riding comfort of the low-floor tramcar is improved.
Description
Technical Field
The utility model relates to the technical field of mechanical dynamics, in particular to a gear transmission system and a low-floor tramcar.
Background
At present, 70% of low-floor tramcars are the most at home, but the requirement of people on riding comfort cannot be met.
Therefore, how to improve the riding comfort of the low-floor tramcar is a technical problem to be solved urgently for those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, a first object of the present invention is to provide a gear transmission system capable of improving the riding comfort of a low-floor tram.
A second object of the utility model is to provide a low-floor tram.
In order to achieve the first object, the utility model provides the following technical scheme:
a gear transmission system for a low-floor tramcar comprises a power device, a transmission assembly and a wheel mounting shaft;
the axle of the low-floor tramcar is a hollow shaft, the transmission assembly is arranged in the axle, and the power device is in transmission connection with the transmission assembly;
the wheel installation axle with transmission assembly flexonics, the wheel installation axle is used for installing the wheel.
In a particular embodiment, the transmission assembly includes a primary parallel gearing arrangement and a secondary parallel gearing arrangement;
one-level parallel gear transmission structure and second grade parallel gear transmission structure parallel arrangement, just the power input end of one-level parallel gear transmission structure with the power device transmission is connected, the power input end of second grade parallel gear transmission structure with the power take off end flexonics of one-level parallel gear transmission structure, the power take off end of second grade parallel gear transmission structure with wheel installation axle flexonics.
In another specific embodiment, the primary parallel gearing structure includes a first optical axis, a first idler gear, a second optical axis, and a second idler gear;
the first optical axis and the second optical axis are respectively fixed in the axle in parallel, the first idler wheel is rotatably mounted on the first optical axis, and a power output end of the power device is in transmission connection with the first idler wheel;
the second idler wheel is rotatably arranged on the second optical axis and is in meshed transmission with the first idler wheel.
In another specific embodiment, the two-stage parallel gear transmission structure comprises a first-stage output gear, a first secondary gear shaft, a second secondary gear shaft, a transmission shaft and a spline shaft;
the first secondary gear shaft and the second secondary gear shaft are respectively rotatably arranged in the axle and are positioned at two ends of the axle;
the first secondary gear shaft is in interference connection with the unthreaded hole end of the first-stage output gear, the internally splined end of the first-stage output gear is in splined connection with the transmission shaft, and the first-stage output gear is in meshing transmission with the second idle gear;
the unthreaded hole end of the spline shaft is in interference connection with the second secondary gear shaft, and the internally splined end of the spline shaft is in splined connection with the transmission shaft;
and the first secondary gear shaft and the second secondary gear shaft are respectively in transmission connection with the wheel mounting shafts on the corresponding sides.
In another specific embodiment, the two-stage parallel gearing structure further comprises a first two-stage output gear and a second two-stage output gear;
the first secondary output gear and the second secondary output gear are respectively connected to the wheel mounting shafts on the corresponding sides through internal splines;
the first secondary output gear is in transmission connection with the first secondary gear shaft, and the second secondary output gear is in transmission connection with the second secondary gear shaft.
In another specific embodiment, the axle includes a split-cast motor mount, an output bearing mount, and an axle housing;
the axle box is used for installing the secondary parallel gear transmission structure;
the motor mounting seat is arranged obliquely above the axle box and is detachably connected with the axle box, and the motor mounting seat is used for mounting the primary parallel gear transmission structure;
the output shaft bearing seats are detachably connected to two sides of the axle box and used for mounting bearings of the first secondary gear shaft, the second secondary gear shaft and the wheel mounting shaft;
the transmission shaft is located obliquely below the wheel mounting shaft.
In another specific embodiment, the first optical axis is fixed on the motor mounting seat through a shaft end cover matched bolt;
and the second optical axis is fixed on the axle box through an end cover of the axle end and a matched bolt.
In another specific embodiment, the power plant is an electric motor.
In another specific embodiment, the motor and the motor mounting seat are positioned and mounted through a spigot.
The various embodiments according to the utility model can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the utility model and are part of the specific embodiments of the utility model.
According to the technical scheme, the gear transmission system provided by the utility model has the advantages that the transmission assembly is arranged in the hollow axle, the space under the vehicle body is skillfully utilized, and the layout is compact. In addition, wheel installation axle and transmission assembly flexonics, the last wheel of installing of wheel installation axle has reduced the impact load when the transmission. The riding comfort of the low-floor tramcar is improved.
In order to achieve the second object, the present invention provides the following technical solutions:
a low-floor tram comprising a gear transmission system as claimed in any one of the preceding claims.
Since the low-floor tramcar disclosed by the utility model comprises the gear transmission system in any one of the above items, the beneficial effects of the gear transmission system are all contained in the low-floor tramcar disclosed by the utility model.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without performing novelty work.
FIG. 1 is a front view schematic of a gear system provided in accordance with the present invention;
FIG. 2 is a schematic sectional view A-A of FIG. 1.
In the figure:
the device comprises a power device 1, a wheel mounting shaft 2, a first optical axis 3, a first idle wheel 4, a second optical axis 5, a second idle wheel 6, a primary output gear 7, a first secondary gear shaft 8, a second secondary gear shaft 9, a transmission shaft 10, a spline shaft 11, a first secondary output gear 12, a second secondary output gear 13, a motor mounting seat 14, an output shaft bearing 15 and an axle box 16.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying fig. 1-2 and the detailed description.
The utility model discloses a gear transmission system which is used for a low-floor tramcar, wherein the low-floor tramcar can be any tramcar, and the embodiment takes the low-floor tramcar as 100 percent as an example. The gear transmission system comprises a power device 1, a transmission assembly and a wheel mounting shaft 2.
The axle of the low-floor tramcar is a hollow axle, the transmission assembly is arranged in the axle, and the transmission assembly is ingeniously integrated in the inner space of the hollow axle by utilizing the limited space below the 100 percent low-floor tramcar body, so that the gear transmission system is a power transmission system of the vehicle, and the axle is an important component of a bogie structure and bears the axle weight of the vehicle. The problem of axletree (that is the gear drive system box) hold has been solved.
The power device 1 is in transmission connection with the transmission assembly. The power unit 1 is any device capable of supplying power, and the power unit 1 is taken as an example of the present embodiment.
Wheel installation axle 2 and transmission assembly flexible connection, specifically, wheel installation axle 2 installs in transmission assembly's both sides, installs the wheel on every wheel installation axle 2 respectively.
Further, the utility model discloses a transmission assembly which comprises a primary parallel gear transmission structure and a secondary parallel gear transmission structure. The first-stage parallel gear transmission structure and the second-stage parallel gear transmission structure are arranged in parallel, a power input end of the first-stage parallel gear transmission structure is in transmission connection with the power device 1, a power input end of the second-stage parallel gear transmission structure is in flexible connection with a power output end of the first-stage parallel gear transmission structure, and a power output end of the second-stage parallel gear transmission structure is in flexible connection with the wheel mounting shaft 2. It should be noted that the transmission assembly may also be composed of 3 or more than 3 parallel gear transmission structures, and the number of the parallel gear transmission structures may be adjusted according to the needs and the space. The present embodiment takes the case that the transmission assembly comprises 2 parallel gear transmission structures.
Specifically, the utility model discloses a one-stage parallel gear transmission structure which comprises a first optical shaft 3, a first idle gear 4, a second optical shaft 5 and a second idle gear 6. The first optical axis 3 and the second optical axis 5 are respectively fixed in the axle in parallel, the first idle wheel 4 is rotatably installed on the first optical axis 3, the power output end of the power device 1 is in transmission connection with the first idle wheel 4, and the second idle wheel 6 is rotatably installed on the second optical axis 5 and is in meshing transmission with the first idle wheel 4. Two idle wheels are used for transition, the span of primary transmission is effectively increased, and sufficient installation space is provided for the installation of the power device 1.
Further, the utility model discloses a two-stage parallel gear transmission structure which comprises a one-stage output gear 7, a first secondary gear shaft 8, a second secondary gear shaft 9, a transmission shaft 10 and a spline shaft 11. First secondary gear axle 8 and second secondary gear axle 9 are rotatable the installation respectively in the axletree, and are located the both ends of axletree, and first secondary gear axle 8 and one-level output gear 7's unthreaded hole end interference are connected, and one-level output gear 7's internal spline end and transmission shaft 10 splined connection, one-level output gear 7 and the meshing transmission of second idler 6. The smooth hole end of the spline shaft 11 is in interference connection with the second secondary gear shaft 9, and the internal spline end of the spline shaft 11 is in spline connection with the transmission shaft 10. The first secondary gear shaft 8 and the second secondary gear shaft 9 are respectively in transmission connection with the wheel mounting shafts 2 on the corresponding sides. The axle center of the first-stage output gear 7 is sequentially provided with an unthreaded hole and an internal spline hole communicated with the unthreaded hole along the direction from one end to the other end, the unthreaded hole end of the first-stage output gear 7 is the end of the first-stage output gear 7 provided with the unthreaded hole, and the internal spline end of the first-stage output gear 7 is the end of the first-stage output gear 7 provided with the internal spline hole. The shaft center of the spline shaft 11 is sequentially provided with an unthreaded hole and an internal spline hole communicated with the unthreaded hole along the direction from one end to the other end, the unthreaded hole end of the spline shaft 11 is the end of the spline shaft 11 provided with the unthreaded hole, and the internal spline end of the spline shaft 11 is the end of the spline shaft 11 provided with the internal spline hole.
Further, the utility model discloses a two-stage parallel gear transmission structure, which further comprises a first two-stage output gear 12 and a second two-stage output gear 13, wherein the first two-stage output gear 12 and the second two-stage output gear 13 are respectively provided with an inner spline hole therein and are respectively connected to the wheel mounting shafts 2 on the corresponding sides through inner splines.
The first secondary output gear 12 is in transmission connection with the first secondary gear shaft 8, and the second secondary output gear 13 is in transmission connection with the second secondary gear shaft 9. During secondary transmission, spline connection is adopted on the transmission shaft 10 and the wheel mounting shaft 2 to transmit torque, and impact load during transmission is reduced by adopting the flexible connection.
Further, the present invention discloses an axle including a split-cast motor mount 14, an output shaft bearing 15, and an axle housing 16. The axle is of a thin-wall hollow structure, the boxes at two ends are large, the middle is small, the size of the joint is large, the difference between the thin wall and the thick wall is large, the integral casting structure is high in integral performance requirement, and the casting difficulty is large.
The axle housing 16 is used for mounting of a two-stage parallel gear transmission structure. The motor mounting seat 14 is installed obliquely above the axle box 16 and detachably connected with the axle box 16, and the motor mounting seat 14 is used for installing a primary parallel gear transmission structure. The output bearing seats 15 are detachably connected to both sides of the axle box 16, and are used for mounting the bearings of the first secondary gear shaft 8, the second secondary gear shaft 9 and the wheel mounting shaft 2, and the transmission shaft 10 is located obliquely below the wheel mounting shaft 2. Two idle wheel supports of primary drive are fixed on a motor mounting seat 14 through a first optical axis 3, a second optical axis 5 is fixed on an axle box 16, bearings are directly mounted on the first optical axis 3 and the second optical axis 5, and motor torque is directly transmitted to a primary output gear 7 through a first idle wheel 4 and a second idle wheel 6. The arrangement in the form can enable the motor mounting seat 14 to be integrally cast, and the problems of complex box structure and insufficient mounting space of a primary transmission system are solved. Meanwhile, the parting surface B at the connecting surface of the motor mounting seat 14 and the axle box 16 also solves the assembly problem of the shaft systems of the first idler pulley 4 and the second idler pulley 6 in the primary transmission, and the parting surfaces D and E at the connecting part of the axle box 16 and the output bearing seat 15 structurally solve the assembly problem of the secondary transmission system. The motor mounting seat 14, the output shaft bearing 15 and the axle box 16 all belong to special-shaped thin-walled parts, particularly the axle box 16 is of a thin-walled hollow structure, box shapes at two ends of the box are large, the middle of the box is small, the size of a connecting part is greatly increased, and the difference between the thin wall and the thick wall is large, so that the weight of the box is effectively controlled, and the bearing requirement of the box is met.
Furthermore, the utility model discloses that the two ends of the first optical axis 3 and the second optical axis 5 are fixed on the motor mounting seat 14 through matching bolts of end covers of shaft ends, so that the problem of axial positioning of the first optical axis 3 and the second optical axis 5 is solved.
Furthermore, the utility model discloses that the motor and the motor mounting seat 14 are positioned and mounted through a spigot and are rigidly connected, so that the connection structure is simplified, and the structural layout is more compact.
According to the gear transmission system provided by the utility model, the transmission assembly is arranged in the hollow axle, the space under the vehicle body is skillfully utilized, and the layout is compact. In addition, wheel installation axle 2 and transmission assembly flexonics, the last wheel of installing of wheel installation axle 2, impact load when having reduced the transmission. The riding comfort of the low-floor tramcar is improved.
In a second aspect the utility model provides a low-floor tramcar comprising a gear transmission system as described above.
Since the low-floor tramcar disclosed by the utility model comprises the gear transmission system in any one of the above items, the beneficial effects of the gear transmission system are all contained in the low-floor tramcar disclosed by the utility model.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the 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 invention 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. A gear transmission system for a low-floor tramcar comprises a power device, a transmission assembly and a wheel mounting shaft;
the axle of the low-floor tramcar is a hollow shaft, the transmission assembly is arranged in the axle, and the power device is in transmission connection with the transmission assembly;
the wheel installation axle with transmission assembly flexonics, the wheel installation axle is used for installing the wheel.
2. The gear transmission system of claim 1, wherein the transmission assembly includes a primary parallel gear transmission structure and a secondary parallel gear transmission structure;
one-level parallel gear transmission structure and second grade parallel gear transmission structure parallel arrangement, just the power input end of one-level parallel gear transmission structure with the power device transmission is connected, the power input end of second grade parallel gear transmission structure with the power take off end flexonics of one-level parallel gear transmission structure, the power take off end of second grade parallel gear transmission structure with wheel installation axle flexonics.
3. The gear transmission system of claim 2, wherein the primary parallel gear transmission structure includes a first optical axis, a first idler gear, a second optical axis, and a second idler gear;
the first optical axis and the second optical axis are respectively fixed in the axle in parallel, the first idler wheel is rotatably mounted on the first optical axis, and a power output end of the power device is in transmission connection with the first idler wheel;
the second idler wheel is rotatably arranged on the second optical axis and is in meshed transmission with the first idler wheel.
4. The gear transmission system of claim 3, wherein the two-stage parallel gear transmission structure comprises a first stage output gear, a first stage gear shaft, a second stage gear shaft, a transmission shaft, and a spline shaft;
the first secondary gear shaft and the second secondary gear shaft are respectively rotatably arranged in the axle and are positioned at two ends of the axle;
the first secondary gear shaft is in interference connection with the unthreaded hole end of the first-stage output gear, the internally splined end of the first-stage output gear is in splined connection with the transmission shaft, and the first-stage output gear is in meshing transmission with the second idle gear;
the unthreaded hole end of the spline shaft is in interference connection with the second secondary gear shaft, and the internally splined end of the spline shaft is in splined connection with the transmission shaft;
and the first secondary gear shaft and the second secondary gear shaft are respectively in transmission connection with the wheel mounting shafts on the corresponding sides.
5. The gear transmission system of claim 4, wherein said two-stage parallel gear transmission further comprises a first two-stage output gear and a second two-stage output gear;
the first secondary output gear and the second secondary output gear are respectively connected to the wheel mounting shafts on the corresponding sides through internal splines;
the first secondary output gear is in transmission connection with the first secondary gear shaft, and the second secondary output gear is in transmission connection with the second secondary gear shaft.
6. The gear transmission system of claim 4, wherein said axle comprises a split-cast motor mount, an output bearing mount, and an axle housing;
the axle box is used for installing the secondary parallel gear transmission structure;
the motor mounting seat is arranged obliquely above the axle box and is detachably connected with the axle box, and the motor mounting seat is used for mounting the primary parallel gear transmission structure;
the output shaft bearing seats are detachably connected to two sides of the axle box and used for mounting bearings of the first secondary gear shaft, the second secondary gear shaft and the wheel mounting shaft;
the transmission shaft is located obliquely below the wheel mounting shaft.
7. The gear transmission system according to claim 6, wherein the first optical axis is fixed on the motor mounting seat through a shaft end cover matching bolt;
and the second optical axis is fixed on the axle box through an end cover of the axle end and a matched bolt.
8. A gear transmission system according to claim 6 or 7, wherein the power means is an electric motor.
9. The gear transmission system of claim 8, wherein said motor is positionally fixed with said motor mount by a spigot.
10. A low-floor tram, characterized in that it comprises a gear transmission system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121708418.XU CN216128255U (en) | 2021-07-26 | 2021-07-26 | Gear transmission system and low-floor tramcar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121708418.XU CN216128255U (en) | 2021-07-26 | 2021-07-26 | Gear transmission system and low-floor tramcar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216128255U true CN216128255U (en) | 2022-03-25 |
Family
ID=80768218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121708418.XU Active CN216128255U (en) | 2021-07-26 | 2021-07-26 | Gear transmission system and low-floor tramcar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216128255U (en) |
-
2021
- 2021-07-26 CN CN202121708418.XU patent/CN216128255U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108674179B (en) | Integrated electric drive power assembly | |
| EP3778281A1 (en) | Electric wheel assembly with integrated hub motor | |
| JP2002154343A (en) | Power transmission mechanism for front and rear wheel drive vehicle | |
| US20210039492A1 (en) | An electric axle assembly | |
| US20190264790A1 (en) | Vehicle-driving apparatus | |
| WO2019149181A1 (en) | Speed reducer, drive device, and electric vehicle | |
| CN112706597A (en) | Double-motor electric drive axle | |
| WO2019062864A1 (en) | Integrated steering drive axle assembly and vehicle | |
| CN112049919A (en) | Gear box and driving system for railway vehicle and railway vehicle | |
| US20240093768A1 (en) | Dual-motor driving system assembly and vehicle | |
| CN215321961U (en) | Vehicle with double-motor drive axle | |
| CN211054919U (en) | Parallel shaft integrated electric drive axle assembly and vehicle with same | |
| CN216128255U (en) | Gear transmission system and low-floor tramcar | |
| CN213541201U (en) | Front-mounted variable-speed reversing device | |
| CN218953953U (en) | Speed reducer for electric automobile drive axle | |
| CN217539508U (en) | Three-shaft output speed reducer | |
| CN218805002U (en) | Axle assembly for electric vehicle and electric vehicle | |
| JP2561390Y2 (en) | Transmission case structure | |
| CN110836254A (en) | Single-motor transverse shiftable electric drive bridge reducer assembly | |
| CN209909085U (en) | Speed change device with composite gear structure | |
| CN215621947U (en) | Driving mechanism of railway vehicle | |
| CN215567807U (en) | Speed reduction integrated middle electric friction motor | |
| CN215172084U (en) | Integrated reduction gear input shaft integrated with motor shaft | |
| CN212604296U (en) | Integrated form commercial car electricity drives bridge | |
| CN220286365U (en) | Two-stage planetary gear reducer and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |