CN214984815U - Wheel-side electric driving device for independent suspension - Google Patents

Abstract

The utility model discloses an independent suspension wheel edge electric driving device, which relates to the technical field of passenger car chassis components and comprises an independent suspension and a driving assembly, wherein the independent suspension comprises a bridge frame, an upper swing arm and a lower swing arm which are arranged on the bridge frame, the driving assembly comprises a motor, a first-stage speed reducing mechanism, a half shaft and a second-stage speed reducing mechanism, the half shaft is arranged in the bridge frame, one end of the half shaft extends to the swing arm side of the bridge frame and is connected with the first-stage speed reducing mechanism and the motor in a transmission way, and the other end of the half shaft extends to the tire side of the bridge frame and is connected with the second-stage speed reducing mechanism in a transmission way; the first-stage speed reducing mechanism is a parallel shaft speed reducing mechanism, and the second-stage speed reducing mechanism is a planetary speed reducing mechanism. The utility model discloses an independent suspension wheel limit electricity drives device overall structure is arranged rationally, reliably, make full use of independent suspension's self structure, need not to occupy extra space alone, has effectively reduced the shared space of reduction gears to the width in middle of the vehicle passageway has been increased.

Description

Wheel-side electric driving device for independent suspension

Technical Field

The utility model belongs to the technical field of passenger train chassis part technique and specifically relates to an independent suspension wheel limit electricity drives device.

Background

Along with the improvement of living standard of people, the requirement of people to public trip is also higher and higher, and future new forms of energy passenger train will be with high-end ization, humanized, intelligent major selling point, wherein in high-end, humanized on independent suspension wheel limit electricity drive configuration will be a unique and elegant thing, can realize low floor, wide passageway and high travelling comfort behind its configuration list child, very is suitable for present public transit development trend. However, most of the existing wheel side electric driving devices for the independent suspension have the problems of unreasonable structural arrangement, high cost, inconvenience in maintenance, difficulty in maintenance and the like.

Disclosure of Invention

The utility model provides an independent suspension wheel limit electricity drives device, the most structural arrangement who exists of current independent suspension wheel limit electricity drives device is unreasonable, maintain difficult and the difficult problem of waiting of maintenance to its main aim at solution.

The utility model adopts the following technical scheme:

an electric driving device for the wheel side of an independent suspension comprises the independent suspension and a driving assembly, wherein the independent suspension comprises a bridge frame, an upper swing arm and a lower swing arm which are arranged on the bridge frame, and the driving assembly comprises a motor, a first-stage speed reducing mechanism, a half shaft and a second-stage speed reducing mechanism; the half shaft is arranged in the bridge, one end of the half shaft extends to the swing arm side of the bridge and is connected with the first-stage speed reducing mechanism and the motor in a transmission way, and the other end of the half shaft extends to the tire side of the bridge and is connected with the second-stage speed reducing mechanism in a transmission way; the first-stage speed reducing mechanism is a parallel shaft speed reducing mechanism, and the second-stage speed reducing mechanism is a planetary speed reducing mechanism.

Furthermore, the parallel shaft speed reducing mechanism is an integrated parallel shaft type speed reducer, is arranged on the bridge frame and is positioned between the upper swing arm and the lower swing arm.

Furthermore, the integrated parallel shaft speed reducer comprises a box body, and a driving gear and a driven gear which are arranged on the front side and the rear side in the box body in a mutually meshed mode; the motor is fixedly arranged outside the box body and is in transmission connection with the driving gear; the half shaft is in transmission connection with the driven gear.

The hub is arranged outside the bridge frame through a hub bearing and is fixedly connected with a planet carrier of the planet speed reducing mechanism.

Furthermore, an oil duct communicated with the interiors of the first-stage speed reducing mechanism and the second-stage speed reducing mechanism is formed between the bridge frame and the half shaft; and an end cover is arranged on the outer side of the second-stage speed reducing mechanism and is provided with an observation window for observing the liquid level and the oil quality of the lubricating oil.

Further, the observation window comprises a mounting hole and a transparent baffle; the middle part of the end cover is provided with the mounting hole, and the outer side of the mounting hole is provided with the transparent baffle; the output shaft of the second-stage speed reducer is rotatably arranged in the mounting hole through a bearing.

Furthermore, the end cover is provided with an oil filling hole communicated with the interior of the second-stage speed reducer and is provided with an oil plug used for plugging the oil filling hole.

Further, the bridge comprises a shock absorber and an air bag which are arranged on the bridge.

Further, the upper control arm and the lower control arm are both A-shaped control arms.

Compared with the prior art, the utility model discloses the beneficial effect who produces lies in:

1. the utility model discloses an independent suspension wheel limit electricity drives device overall structure arranges rationally, reliably, and first order reduction gears sets up in the swing arm side to adopt parallel shaft reduction gears, make full use of the self structure of independent suspension, need not to occupy extra space alone, effectively reduced the space that whole reduction gears occupy; the second-stage speed reducer is arranged on the tire side along the width direction of the vehicle, and a planetary speed reducing mechanism is adopted, so that the space occupied by the wheel driving device is effectively reduced, and the width of a middle passageway of the vehicle is increased.

2. The utility model discloses a first order reduction gears adopts integral type parallel shaft reduction gear to the parallel gear transmission structure of arranging around this integral type parallel shaft reduction gear adopts, so can effectively compress reduction gears's occupation space, and solved installation space not enough, be difficult to arrange and overhaul the problem of maintaining the difficulty etc..

3. The utility model discloses a set up the oil duct between wheel carrier and semi-axis, thereby with the inside intercommunication of first order reduction gears and second level reduction gears, and set up the observation window on the end cover in the second level reduction gears outside, can be in real time through the observation window, simply and clearly observe the liquid level and the oily condition of the inside lubricating oil of first order reduction gears and second level reduction gears, and then in time judge whether need pour into or change lubricating oil, overcome prior art's defect from this, help improving the life that the wheel limit electricity drives the device.

Drawings

Fig. 1 is a schematic front structural view of the present invention.

Fig. 2 is a top view of the first-stage speed reducer and the motor of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details.

Referring to fig. 1 and 2, an independent suspension wheel edge electric driving device comprises an independent suspension 1 and a driving assembly, wherein the independent suspension 1 comprises a bridge 11, an upper swing arm 12 and a lower swing arm 13 which are arranged on the bridge 1, the driving assembly comprises a motor 21, a first-stage speed reducing mechanism 22, a half shaft 23 and a second-stage speed reducing mechanism 24, specifically, the half shaft 23 is arranged in the bridge 11, one end of the half shaft extends to the swing arm side of the bridge 11 and is in transmission connection with the first-stage speed reducing mechanism 22 and the motor 21, and the other end of the half shaft extends to the tire side of the bridge 11 and is in transmission connection with the second-stage speed reducing mechanism 24; the first-stage reduction mechanism 22 is a parallel-axis reduction mechanism, and the second-stage reduction mechanism 24 is a planetary reduction mechanism. The utility model discloses an independent suspension wheel limit electricity drives device overall structure arranges rationally, reliably, and first order reduction gears 22 sets up in the swing arm side to adopt parallel shaft reduction gears, make full use of the self structure of independent suspension, need not to occupy extra space alone, effectively reduced the space that whole reduction gears occupy; the second-stage speed reducer 24 is arranged on the tire side along the width direction of the vehicle, and a planetary speed reducing mechanism is adopted, so that the space occupied by the wheel driving device is effectively reduced, and the width of a middle passageway of the vehicle is increased.

Referring to fig. 1 and 2, as a preferred solution: the parallel shaft speed reducing mechanism is an integrated parallel shaft speed reducer, is arranged on the bridge 11 and is positioned between the upper swing arm 12 and the lower swing arm 13. The adoption of the integrated parallel shaft speed reducer is beneficial to fully compressing the occupied space of the speed reducing mechanism and is convenient for installation and maintenance. Specifically, the integrated parallel shaft speed reducer includes a case 221, and a driving gear 222 and a driven gear 223 disposed at front and rear sides inside the case in an engaged manner; the motor 21 is fixedly arranged outside the box body 221 and is in transmission connection with the driving gear 222; the half-shafts 23 are drivingly connected to the driven gear 223. The parallel shaft speed reducer arranged in the front-back direction can fully utilize the space between the upper swing arm 12 and the lower swing arm 13, and the problems of insufficient installation space and difficulty in arrangement are solved.

Referring to fig. 1, the planetary reduction gear further includes a hub 3, and the hub 3 is mounted outside the bridge 11 through a hub bearing 31 and is fixedly connected to a planet carrier of the planetary reduction mechanism. The adoption of the planet carrier as the output member enables the reducer to be adapted to smaller wheels, thereby being suitable for light passenger cars.

Referring to fig. 1 and 2, the bridge 11 and the axle shaft 23 form therebetween an oil passage 230 communicating with the interiors of the first-stage reduction mechanism 22 and the second-stage reduction mechanism 24; an end cover 241 is provided outside the second-stage reduction mechanism 24, and an observation window 242 for observing the level and quality of the lubricating oil is provided. Can observe out the liquid level and the oily condition of the inside lubricating oil of first order reduction gears 22 and second level reduction gears 24 simply and clearly in real time through observation window 242, and then in time judge whether need pour into or change lubricating oil, overcome prior art's defect from this, have simple structure, design benefit and practicality advantage such as strong help improving wheel reduction gear's life.

Referring to fig. 1, in particular, the viewing window 242 includes a mounting hole (not shown) and a transparent barrier (not shown); a mounting hole is formed in the middle of the end cover 241, and a transparent baffle is arranged outside the mounting hole; the output shaft of the second reduction gear 24 is rotatably mounted in the mounting hole through a bearing. During operation, the lubricating oil in the first-stage reduction gear 22 enters the second-stage reduction gear 24 through the oil passage 230 and seeps into the mounting hole from the bearing gap, so that a worker can clearly observe the lubricating oil level and the oil quality inside the whole wheel-side electric driving device from the outer side (namely the observation window) of the mounting hole.

Referring to fig. 1, the end cover 241 is provided with an oil hole communicating with the inside of the second reduction gear 24, and is provided with an oil plug 243 for blocking the oil hole. When the lubricating oil liquid level is not enough, can open oil plug 243 soon and through the inside lubricating oil that injects of oil filler point toward second reduction gears 24 for inside lubricating oil got into first reduction gears 22 behind oil duct 230, thereby convenient quick maintenance of carrying on wheel limit electricity and driving the device.

Referring to fig. 1, a shock absorber 14 and an air bag 15 are further included, which are provided to the bridge 1. Specifically, one end of the shock absorber 14 is connected to the bridge 11, and the other end is connected to the frame; one end of the air bag 15 is connected with the bridge 11, and the other end is connected with the frame, and in practical application, a single-air-bag or double-air-bag structure can be selected according to specific requirements.

Referring to fig. 1 and 2, as a preferred solution: the upper control arm 12 and the lower control arm 13 are both a-shaped control arms.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (9)

1. The utility model provides an independent suspension wheel limit electricity drives device, includes independent suspension and drive assembly, independent suspension includes the crane span structure and sets up in the last swing arm of crane span structure and swing arm down, drive assembly includes motor, first order reduction gears, semi-axis and second level reduction gears, its characterized in that: the half shaft is arranged in the bridge, one end of the half shaft extends to the swing arm side of the bridge and is connected with the first-stage speed reducing mechanism and the motor in a transmission way, and the other end of the half shaft extends to the tire side of the bridge and is connected with the second-stage speed reducing mechanism in a transmission way; the first-stage speed reducing mechanism is a parallel shaft speed reducing mechanism, and the second-stage speed reducing mechanism is a planetary speed reducing mechanism.

2. An independent suspension wheel electric drive as claimed in claim 1 wherein: the parallel shaft speed reducing mechanism is an integrated parallel shaft type speed reducer, is arranged on the bridge frame and is positioned between the upper swing arm and the lower swing arm.

3. An independent suspension wheel electric drive as claimed in claim 2 wherein: the integrated parallel shaft speed reducer comprises a box body, and a driving gear and a driven gear which are arranged on the front side and the rear side in the box body in a mutually meshed mode; the motor is fixedly arranged outside the box body and is in transmission connection with the driving gear; the half shaft is in transmission connection with the driven gear.

4. An independent suspension wheel electric drive as claimed in claim 1 wherein: the hub is arranged outside the bridge through a hub bearing and is fixedly connected with a planet carrier of the planetary reduction mechanism.

5. An independent suspension wheel electric drive as claimed in claim 1 wherein: an oil duct communicated with the interiors of the first-stage speed reducing mechanism and the second-stage speed reducing mechanism is formed between the bridge frame and the half shaft; and an end cover is arranged on the outer side of the second-stage speed reducing mechanism and is provided with an observation window for observing the liquid level and the oil quality of the lubricating oil.

6. An independent suspension wheel electric drive as claimed in claim 5 wherein: the observation window comprises a mounting hole and a transparent baffle; the middle part of the end cover is provided with the mounting hole, and the outer side of the mounting hole is provided with the transparent baffle; the output shaft of the second-stage speed reducer is rotatably arranged in the mounting hole through a bearing.

7. An independent suspension wheel electric drive as claimed in claim 5 wherein: the end cover is provided with an oil filling hole communicated with the interior of the second-stage speed reducer and is provided with an oil plug used for plugging the oil filling hole.

8. An independent suspension wheel electric drive as claimed in claim 1 wherein: the bridge is characterized by further comprising a shock absorber and an air bag which are arranged on the bridge.

9. An independent suspension wheel electric drive as claimed in claim 1 wherein: the upper control arm and the lower control arm are both A-shaped control arms.

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