CN114104026A - Intelligent rail tram low-floor rubber wheel bogie based on wheel-side motor - Google Patents

Intelligent rail tram low-floor rubber wheel bogie based on wheel-side motor Download PDF

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Publication number
CN114104026A
CN114104026A CN202010894722.1A CN202010894722A CN114104026A CN 114104026 A CN114104026 A CN 114104026A CN 202010894722 A CN202010894722 A CN 202010894722A CN 114104026 A CN114104026 A CN 114104026A
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CN
China
Prior art keywords
wheel
arm
knuckle
side motor
bogie
Prior art date
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Pending
Application number
CN202010894722.1A
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Chinese (zh)
Inventor
肖磊
付建朝
胡亚丹
罗晓峰
王昊
崔世齐
钟汉文
杨勇
刘彪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan CRRC Zhixing Technology Co Ltd
Original Assignee
Hunan CRRC Zhixing Technology Co Ltd
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Publication date
Application filed by Hunan CRRC Zhixing Technology Co Ltd filed Critical Hunan CRRC Zhixing Technology Co Ltd
Priority to CN202010894722.1A priority Critical patent/CN114104026A/en
Publication of CN114104026A publication Critical patent/CN114104026A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/46—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors forming parts of wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/16—Arrangement of linkage connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/20—Links, e.g. track rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/22—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system
    • B62D7/226—Arrangements for reducing or eliminating reaction, e.g. vibration, from parts, e.g. wheels, of the steering system acting on the steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/10—Railway vehicles

Abstract

The invention provides a wheel-side motor-based low-floor rubber wheel bogie of an intelligent tramcar, which comprises a wheel-side motor assembly, an independent suspension axle, a rubber wheel, a rim, a steering mechanism and a bogie frame, wherein the wheel-side motor assembly is arranged on the wheel-side motor assembly; the rubber wheel is arranged on the rim, and the rim is locked and fixed on the wheel edge motor assembly; a steering knuckle on the wheel side motor assembly is connected with an upper cross arm and a lower cross arm of the independent suspension axle; a steering knuckle arm of the steering mechanism is fixed on a steering knuckle in the wheel side motor assembly, and a steering rocker arm of the steering mechanism is mounted on the bogie frame through a rotating shaft; the upper and lower crossbars of the independent suspension axle are mounted on the bogie frame. The invention adopts the wheel-side motor technology to realize all-wheel drive, solves the problem of insufficient power of four or more section intelligent rail electric vehicles, and meets the requirement of large transportation capacity in intelligent rails; adopt independent suspension axletree and integral axletree structure, the passenger is conveniently got on or off, has improved the stationarity of traveling of intelligent rail tram.

Description

Intelligent rail tram low-floor rubber wheel bogie based on wheel-side motor
Technical Field
The invention relates to the field of intelligent rail electric vehicles, in particular to a low-floor rubber wheel bogie of an intelligent rail electric vehicle based on a wheel-side motor.
Background
In the prior art, the intelligent rail electric car is a novel urban rail vehicle with multiple sections of marshalling, full-axle steering, medium and large transportation capacity and low floor, and the arrangement of the low floor is imperative for facilitating passengers getting on and off as urban operation. Achieving medium to high volumes of traffic requires sufficient space in the train, i.e. a sufficient number of consists. Meanwhile, enough power must be provided for medium and large transportation volumes, the radius of a curve of an urban operation road is small, and the vehicle is required to have a full-axle steering function.
The existing platform of the smart rail electric car is in a three-section marshalling mode, a six-shaft full steering mode and a 12 multiplied by 4 driving mode (power is arranged at two ends), and a low floor is not completely penetrated (the floor at a power bogie is in a three-stage stepping mode). If marshalling needs to be added (the transportation capacity is increased) on the basis of the current platform or the low-floor full-through requirement is realized, the existing bogie structure cannot meet the use requirement.
In view of the above, those skilled in the art have developed a low-floor rubber wheel bogie for an intelligent electric rail vehicle based on a wheel-side motor, in order to overcome the above technical problems.
Disclosure of Invention
The invention aims to overcome the defect that the existing bogie structure in the prior art cannot meet the requirements of an intelligent tram platform, and provides a wheel-side motor-based intelligent tram low-floor rubber wheel bogie.
The invention solves the technical problems through the following technical scheme:
a wheel-side motor-based low-floor rubber wheel bogie of an intelligent tramcar is characterized by comprising a wheel-side motor assembly, an independent suspension axle, a rubber wheel, a rim, a steering mechanism and a bogie frame; wherein the content of the first and second substances,
the rubber wheel is arranged on the rim, and the rim is locked and fixed on the wheel edge motor assembly;
a steering knuckle on the wheel side motor assembly is connected with an upper cross arm and a lower cross arm of the independent suspension axle;
a steering knuckle arm of the steering mechanism is fixed on a steering knuckle in the wheel side motor assembly, and a steering rocker arm of the steering mechanism is mounted on the bogie frame through a rotating shaft;
the upper and lower crossbars of the independent suspension axle are mounted on the bogie frame.
A wheel-side motor-based low-floor rubber wheel bogie of an intelligent tramcar is characterized by comprising a wheel-side motor assembly, an integral axle, a rubber wheel, a rim, a steering mechanism and a bogie frame;
wherein the content of the first and second substances,
the rubber wheel is arranged on the rim, and the rim is locked and fixed on the wheel edge motor assembly;
a steering knuckle on the wheel side motor assembly is connected with an axle housing shaft of the integral axle;
and a steering knuckle arm of the steering mechanism is fixed on a steering knuckle of the wheel side motor assembly.
According to one embodiment of the invention, the wheel-side motor assembly comprises a planetary reducer, a motor, a disc brake and a steering knuckle;
the stator frame of the motor is fixedly connected with the steering knuckle, the planetary reducer is installed on the outer end portion of the steering knuckle, and the disc brake is fixed on the planetary reducer.
According to one embodiment of the invention, the planetary speed reducer comprises a planet carrier, a gear ring, a sun gear and a hub, wherein the hub is arranged on the steering knuckle, the planet carrier is fixedly connected to the hub, and the gear ring is arranged in the planet carrier and is fixed with the steering knuckle.
According to one embodiment of the invention, the electric motor is connected to a half shaft mounted in the knuckle, the electric motor inputting power to the sun gear of the planetary reduction gear through the half shaft.
According to one embodiment of the invention, the disc brake comprises a brake disc fixed to the hub and a brake caliper mounted on the steering knuckle to slow or stop the movement of the hub by braking.
According to one embodiment of the present invention, the independent suspension axle includes an upper cross arm, a lower cross arm, a shock absorber, an air spring, and a height valve assembly;
the upper end of the air spring is mounted on the bogie frame, and the lower end of the air spring is mounted on the upper cross arm;
the upper end of the shock absorber is connected to the underframe, and the lower end of the shock absorber is connected to the lower cross arm;
the upper cross arm and the lower cross arm are connected to the bogie frame through rubber bushings.
According to one embodiment of the invention, the steering mechanism adopts a break-off steer-by-wire mechanism, which comprises a left tie rod, a right tie rod, a middle tie rod, a left rocker arm, a right rocker arm, a left knuckle arm, a right knuckle arm and at least one actuator; wherein the content of the first and second substances,
the left rocker arm and the right rocker arm are mounted on the bogie frame through a rotating shaft;
the left end and the right end of the middle tie rod are respectively connected with the left rocker arm and the right rocker arm;
the left end and the right end of the left transverse pull rod are respectively connected with the left knuckle arm and the right knuckle arm;
the left end and the right end of the right transverse pull rod are respectively connected with the right knuckle arm and the right rocker arm;
the front end and the rear end of the actuator are respectively connected with the right rocker arm and the bogie frame, and/or the front end and the rear end of the actuator are respectively connected with the left rocker arm and the bogie frame;
the left-section arm and the right-section arm are respectively connected to a left steering knuckle and a right steering knuckle of the wheel-side motor assembly.
According to one embodiment of the present invention, the actuator includes a left actuator and a right actuator, the left actuator is connected to the left rocker arm and the bogie frame at front and rear ends thereof, respectively, and the right actuator is connected to the right rocker arm and the bogie frame at front and rear ends thereof, respectively.
According to one embodiment of the invention, the steering mechanism adopts a break-off steer-by-wire mechanism, which comprises a left knuckle arm, a right knuckle arm and two actuators;
the actuator comprises a left actuator and a right actuator, the front end and the rear end of the left actuator are respectively connected with the left knuckle arm and the bogie frame, and the front end and the rear end of the right actuator are respectively connected with the right knuckle arm and the bogie frame;
the left-section arm and the right-section arm are respectively connected to a left steering knuckle and a right steering knuckle of the wheel-side motor assembly.
According to one embodiment of the present invention, the integrated axle includes an axle housing, a tie rod, a left knuckle arm, a right knuckle arm, and an actuator; wherein the content of the first and second substances,
the left steering knuckle and the right steering knuckle of the wheel side motor assembly are connected with the axle housing through pin shafts;
the left-joint arm and the right-joint arm are respectively connected to a left steering knuckle and a right steering knuckle of the wheel-side motor assembly;
a left steering knuckle and a right steering knuckle of the wheel side motor assembly are respectively connected with two ends of the tie rod;
the both ends of actuator respectively with the axle housing right side festival arm is connected, perhaps the both ends of actuator respectively with the axle housing left side festival arm is connected.
The positive progress effects of the invention are as follows:
the intelligent rail electric car low-floor rubber wheel bogie based on the wheel-side motor has the following advantages:
the wheel-side motor technology is adopted to realize all-wheel drive, the problem of insufficient power of four or more sections of intelligent rail electric vehicles is solved, and the requirement of large transportation capacity in intelligent rails is met;
secondly, a fully-through low-floor structure of the vehicle is realized by adopting an independent suspension axle and an integral axle structure, passengers can get on and off conveniently, and the running stability of the intelligent tramcar is improved;
and thirdly, various steer-by-wire mechanisms are adopted, the flexible selection can be realized according to the arrangement of the chassis, the full-axle steer-by-wire function is realized, the turning radius of the vehicle is small, the steering is flexible, and the vehicle is suitable for urban roads in various places.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:
FIG. 1 is a front view of an independent rubber wheel bogie in a wheel-side motor-based intelligent rail electric car low-floor rubber wheel bogie.
FIG. 2 is a top view of an independent rubber wheel bogie in the intelligent rail electric vehicle low-floor rubber wheel bogie based on the wheel edge motor.
Fig. 3 is a front view of the integrated rubber wheel bogie in the low-floor rubber wheel bogie of the intelligent electric rail car based on the wheel-side motor.
Fig. 4 is a top view of the integrated rubber wheel bogie in the low-floor rubber wheel bogie of the intelligent electric rail vehicle based on the wheel-side motor.
FIG. 5 is a schematic structural diagram of a wheel-side motor assembly in the low-floor rubber wheel bogie of the smart rail electric car based on the wheel-side motor.
Fig. 6 is a front view of an independent suspension axle in the intelligent tram low-floor rubber wheel bogie based on the wheel side motor.
Fig. 7 is a top view of an independent suspension axle in the low-floor rubber wheel bogie of the intelligent tram based on the wheel side motor.
Fig. 8 is a schematic structural diagram of an open-type steer-by-wire mechanism of a low-floor rubber wheel bogie of an intelligent electric rail car based on a wheel-side motor.
Fig. 9 is a schematic view showing the arrangement of an actuator of the break-open steer-by-wire mechanism of fig. 8.
Fig. 10 is a schematic structural diagram of another embodiment of the break-open type steer-by-wire mechanism of the intelligent tram low-floor rubber wheel bogie based on the wheel edge motor.
Fig. 11 is a first schematic layout of the actuator of the break-open steer-by-wire mechanism of fig. 10.
Fig. 12 is a second schematic layout view of the actuator of the break-open steer-by-wire mechanism of fig. 10.
Fig. 13 is a schematic structural diagram of another embodiment of the break-open type steer-by-wire mechanism of the intelligent tram low-floor rubber wheel bogie based on the wheel edge motor.
Fig. 14 is a front view of an integrated axle in the low-floor rubber wheel bogie of the intelligent tram based on the wheel side motor.
Fig. 15 is a top view of the integrated axle in the low-floor rubber wheel bogie of the intelligent tram based on the wheel side motor.
[ reference numerals ]
Wheel edge motor assembly 10
Independent suspension axle 20
Rubber wheel 30
Rim 40
Steering mechanism 50
Bogie frame 60
Motor 11
Steering knuckle 12
Planetary carrier 13
Ring gear 14
Sun gear 15
Hub 16
Half shaft 17
Brake disc 18
Brake caliper 19
Hub bearing 161
Upper cross arm 21
Lower cross arm 22
Vibration damper 23
Air spring 24
Left track rod 51
Right track rod 52
Middle cross tie rod 53
Left rocker arm 54
Right rocker arm 55
Left arm 56, 73
Right arm 57, 74
Actuator 58, 75
Left actuator 581
Right actuator 582
Integral axle 70
Axle housing 71
Tie rod 72
Left knuckle 101
Right knuckle 102
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.
Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
The first embodiment is as follows:
the bogie related to the intelligent rail tramcar low-floor rubber wheel bogie based on the wheel-side motor is divided into an independent bogie and an integral bogie according to the form of an axle, wheel-side motor assemblies adopted by the bogies with the two structures are consistent, and the main difference is that the axles are different.
The present embodiment is described in detail with reference to the accompanying drawings by taking a stand-alone structure as an example.
FIG. 1 is a front view of an independent rubber wheel bogie in a wheel-side motor-based intelligent rail electric car low-floor rubber wheel bogie. FIG. 2 is a top view of an independent rubber wheel bogie in the intelligent rail electric vehicle low-floor rubber wheel bogie based on the wheel edge motor.
As shown in fig. 1 and 2, the invention discloses a wheel-side motor-based low-floor rubber wheel bogie for an intelligent tram, which comprises a wheel-side motor assembly 10, an independent suspension axle 20, a rubber wheel 30, a rim 40, a steering mechanism 50 and a bogie frame 60. In which the rubber wheel 30 is mounted on a rim 40, for example, inflated, and secured to the rim 40 by external tension. The rim 40 is locked and fixed on the wheel-side motor assembly 10, for example, the rim 40 is positioned through a seam allowance, and the tire bolt is locked and fixed on the wheel-side motor assembly 10. The knuckles on the wheel-side motor assembly 10 are connected, for example by pins, to the upper and lower crossbars of the independent suspension axles 20. The knuckle arm of the steering mechanism 50 is fixed to a knuckle in the wheel-side motor assembly 10, and the pitman arm of the steering mechanism 50 is mounted to the bogie frame 60 through a rotating shaft. The upper and lower wishbones of the independent suspension axle 20 are mounted on a bogie frame 60.
FIG. 5 is a schematic structural diagram of a wheel-side motor assembly in the low-floor rubber wheel bogie of the smart rail electric car based on the wheel-side motor.
As shown in fig. 5, the wheel-side motor assembly 10 includes a planetary reducer, a motor 11, a disc brake, and a knuckle 12. The stator frame of the motor 11 is fixedly connected with a steering knuckle 12, the planetary reducer is mounted on the outer end portion of the steering knuckle 12, the planetary reducer is integrated with a permanent magnet motor structure, and the disc brake is fixed on the planetary reducer.
Preferably, the planetary reducer comprises a planet carrier 13, a ring gear 14, a sun gear 15 and a hub 16, the hub 16 is mounted on the steering knuckle 12, the planet carrier 13 is fixedly connected to the hub 16, and the ring gear 14 is mounted in the planet carrier 13 and is fixed to the steering knuckle 12.
Further, the motor 11 is connected with a half shaft 17, the half shaft 17 is installed in the steering knuckle 12, and the motor 11 and the half shaft 17 can be connected in a plug-in mode, so that the motor 11 inputs power to the sun gear 15 of the planetary speed reducer through the half shaft 17.
Further, the disc brake includes a brake disc 18 and a brake caliper 19, the brake disc 18 is fixed to the wheel hub 16, and the brake caliper 19 is mounted on the knuckle 12 to decelerate or stop the movement of the wheel hub 16 by braking.
Specifically, the stator frame of the motor 11 is fixedly connected with the steering knuckle 12 preferably by bolts, the motor 11 inputs power to a sun gear 15 in a planetary reducer through a half shaft 17, and the planet carrier 13 drives the tire by taking the sun gear 15 as power input and taking the power output.
The gear ring 14 is fixed on the knuckle 12, the sun gear 15 is in spline connection with an output shaft of the motor 11, the planet carrier 13 is fixed on the hub 16 through bolt connection, a hub bearing 161 is arranged between the hub 16 and the knuckle 12, and the tire is mounted on the hub 16, so that rotation between the tire and the knuckle 12 is achieved. A motor bearing is arranged between a rotor frame and a stator of the motor 11, and a stator frame of the motor 11 is fixed on the steering knuckle 12, so that the rotation of the stator and the rotor of the motor 11 is realized. A brake disc 18 is fixed to the hub 16 and a brake caliper 19 is mounted on the knuckle 12 to slow or stop the movement of the hub 16 by braking.
Fig. 6 is a front view of an independent suspension axle in the intelligent tram low-floor rubber wheel bogie based on the wheel side motor. Fig. 7 is a top view of an independent suspension axle in the low-floor rubber wheel bogie of the intelligent tram based on the wheel side motor.
As shown in fig. 6 and 7, the independent suspension axle 20 of the present embodiment includes an upper arm 21, a lower arm 22, a shock absorber 23, an air spring 24, and a height valve assembly (not shown). Wherein the upper end of the air spring 24 is mounted to the truck frame 60, such as by a bolted connection. The lower end of the air spring 24 is mounted on the upper cross arm 21, for example by bolting. The upper end of the damper 23 is connected to the chassis, for example by a rubber flexible connection. The lower end of the damper 23 is connected to the lower transverse link 22, for example by a rubber flexible connection. The upper and lower crossbars 21 and 22 are connected to the bogie frame 60 by rubber bushings.
Fig. 8 is a schematic structural diagram of an open-type steer-by-wire mechanism of a low-floor rubber wheel bogie of an intelligent electric rail car based on a wheel-side motor.
As shown in fig. 8, the steering mechanism 50 in the present embodiment is preferably a break-type steer-by-wire mechanism including a left tie rod 51, a right tie rod 52, a middle tie rod 53, a left rocker arm 54, a right rocker arm 55, a left knuckle arm 56, a right knuckle arm 57, and an actuator 58.
Wherein the left and right swing arms 54 and 55 are mounted on the truck frame 60 through a rotating shaft. The left and right ends of the intermediate tie rod 53 are connected to a left rocker arm 54 and a right rocker arm 55, respectively, for example, in a ball joint manner. The left and right ends of the left track rod 52 are connected to a left joint arm 56 and a right joint arm 57, respectively, for example, by a ball joint. The right and left ends of the right tie rod 52 are connected to a right knuckle arm 56 and a right rocker arm 55, respectively, for example, in a ball joint manner.
The front and rear ends of the actuator 58 are connected to the right swing arm 55 and the bogie frame 60, respectively, or the front and rear ends of the actuator 58 are connected to the left swing arm 54 and the bogie frame 60, respectively, for example, by a ball joint. The left arm 56 and the right arm 57 are respectively connected to the left knuckle and the right knuckle of the wheel-side motor assembly 10, for example, by bolts.
Fig. 9 is a schematic view showing the arrangement of an actuator of the break-open steer-by-wire mechanism of fig. 8.
More specifically, as shown in fig. 9, the break-away steer-by-wire mechanism can arrange the actuators in various ways according to the chassis arrangement requirements. For example, the steering mechanism 50 includes an actuator 58.
As shown in part (a) of fig. 9, the front and rear ends of the actuator 58 are connected to the right swing arm 55 and the bogie frame 60, respectively, and the actuator 58 is disposed upward along the right swing arm 55.
As shown in part (b) of fig. 9, the front and rear ends of the actuator 58 are connected to the left swing arm 54 and the bogie frame 60, respectively, and the actuator 58 is disposed upward along the left swing arm 54.
As shown in part (c) of fig. 9, the front and rear ends of the actuator 58 are connected to the right swing arm 55 and the bogie frame 60, respectively, and the actuator 58 is disposed downward along the right swing arm 55.
As shown in part (d) of fig. 9, the front and rear ends of the actuator 58 are connected to the left swing arm 54 and the bogie frame 60, respectively, and the actuator 58 is disposed downward along the left swing arm 54.
Fig. 10 is a schematic structural diagram of another embodiment of the break-open type steer-by-wire mechanism of the intelligent tram low-floor rubber wheel bogie based on the wheel edge motor.
As shown in fig. 10, the steering mechanism 50 in the present embodiment is preferably a break-type steer-by-wire mechanism including a left tie rod 51, a right tie rod 52, a middle tie rod 53, a left rocker arm 54, a right rocker arm 55, a left knuckle arm 56, a right knuckle arm 57, and two actuators.
Wherein the left and right swing arms 54 and 55 are mounted on the truck frame 60 through a rotating shaft. The left and right ends of the intermediate tie rod 53 are connected to a left rocker arm 54 and a right rocker arm 55, respectively, for example, in a ball joint manner. The left and right ends of the left track rod 52 are connected to a left joint arm 56 and a right joint arm 57, respectively, for example, by a ball joint. The right and left ends of the right tie rod 52 are connected to a right knuckle arm 56 and a right rocker arm 55, respectively, for example, in a ball joint manner. The left arm 56 and the right arm 57 are respectively connected to the left knuckle and the right knuckle of the wheel-side motor assembly 10, for example, by bolts.
The steering mechanism 50 shown in fig. 10 employs a dual actuator, which is better for ensuring vehicle driving safety than the redundant design of the steering mechanism shown in fig. 8.
Fig. 11 is a first schematic layout of the actuator of the break-open steer-by-wire mechanism of fig. 10. Fig. 12 is a second schematic layout view of the actuator of the break-open steer-by-wire mechanism of fig. 10.
As shown in fig. 11 and 12, the break-type steer-by-wire mechanism can arrange actuators in the following two ways according to the chassis arrangement requirements.
As shown in fig. 11, the actuators include a left actuator 581 and a right actuator 582, the left actuator 581 is connected to the left swing arm 54 and the bogie frame 60 at its front and rear ends, and the right actuator 582 is connected to the right swing arm 55 and the bogie frame 60 at its front and rear ends, for example, by a ball joint. Here, the left actuator 581 and the right actuator 582 are disposed downward along the left rocker arm 54 and the right rocker arm 55, respectively.
As shown in fig. 12, the actuators include a left actuator 581 and a right actuator 582, the left actuator 581 is connected to the left swing arm 54 and the bogie frame 60 at its front and rear ends, and the right actuator 582 is connected to the right swing arm 55 and the bogie frame 60 at its front and rear ends, for example, by a ball joint. Here, the left actuator 581 and the right actuator 582 are disposed upward along the left rocker arm 54 and the right rocker arm 55, respectively.
Fig. 13 is a schematic structural diagram of another embodiment of the break-open type steer-by-wire mechanism of the intelligent tram low-floor rubber wheel bogie based on the wheel edge motor.
As shown in fig. 13, the steering mechanism 50 in the present embodiment preferably employs a break-by-wire steering mechanism including a left joint arm 56, a right joint arm 57, and two actuators. The actuators include a left actuator 581 and a right actuator 582, the front end and the rear end of the left actuator 581 are respectively connected with the left knuckle arm 56 and the bogie frame 60, and the front end and the rear end of the right actuator 582 are respectively connected with the right knuckle arm 57 and the bogie frame 60, for example, by adopting a ball hinge method. The left arm 56 and the right arm 57 are respectively connected to the left knuckle and the right knuckle of the wheel-side motor assembly 10, for example, by bolts.
The steering mechanism 50 of the above structure employs dual actuators, each actuator independently controls one tire to steer, and left and right tire steerings are not mechanically linked to each other and are combined with an independent suspension to form independent wheels.
Compared with the structure shown in fig. 8 and 10, the structure of the steering mechanism 50 shown in fig. 13 is very compact, the left and right wheel turning angles are controlled cooperatively, the turning angle ackermann error of the steering mechanism is very small compared with that of a trapezoidal mechanism, the vehicle steering stability is improved, and the tire wear is effectively reduced.
Example two:
unlike the first embodiment, the present embodiment is described in detail with reference to the drawings by taking the monolithic structure as an example.
Fig. 3 is a front view of the integrated rubber wheel bogie in the low-floor rubber wheel bogie of the intelligent electric rail car based on the wheel-side motor. Fig. 4 is a top view of the integrated rubber wheel bogie in the low-floor rubber wheel bogie of the intelligent electric rail vehicle based on the wheel-side motor.
As shown in fig. 3 and 4, the invention discloses a wheel-side motor-based low-floor rubber wheel bogie for an intelligent tram, which comprises a wheel-side motor assembly 10, an integrated axle 70, a rubber wheel 30, a rim 40, a steering mechanism 50 and a bogie frame 60. In which the rubber wheel 30 is mounted on a rim 40, for example, inflated, and secured to the rim 40 by external tension. The rim 40 is locked and fixed on the wheel-side motor assembly 10, for example, the rim 40 is positioned through a seam allowance, and the tire bolt is locked and fixed on the wheel-side motor assembly 10. The knuckle on the wheel-side motor assembly 10 is connected to the axle housing shaft of the axle 70, for example, by a pin. The knuckle arm of the steering mechanism 50 is fixed to the knuckle of the wheel-side motor assembly 10, for example, by a ball joint connection.
FIG. 5 is a schematic structural diagram of a wheel-side motor assembly in the low-floor rubber wheel bogie of the smart rail electric car based on the wheel-side motor.
As shown in fig. 5, the wheel-side motor assembly 10 includes a planetary reducer, a motor 11, a disc brake, and a knuckle 12. The stator frame of the motor 11 is fixedly connected with a steering knuckle 12, the planetary reducer is mounted on the outer end portion of the steering knuckle 13, the planetary reducer is integrated with a permanent magnet motor structure, and the disc brake is fixed on the planetary reducer.
Preferably, the planetary reducer comprises a planet carrier 13, a ring gear 14, a sun gear 15 and a hub 16, the hub 16 is mounted on the steering knuckle 12, the planet carrier 13 is fixedly connected to the hub 16, and the ring gear 14 is mounted in the planet carrier 13 and is fixed to the steering knuckle 12.
Further, the motor 11 is connected with a half shaft 17, the half shaft 17 is installed in the steering knuckle 12, and the motor 11 and the half shaft 17 can be connected in a plug-in mode, so that the motor 11 inputs power to the sun gear 15 of the planetary speed reducer through the half shaft 17.
Further, the disc brake includes a brake disc 18 and a brake caliper 19, the brake disc 18 is fixed to the wheel hub 16, and the brake caliper 19 is mounted on the knuckle 12 to decelerate or stop the movement of the wheel hub 16 by braking.
Specifically, the stator frame of the motor 11 is fixedly connected with the steering knuckle 12 preferably by bolts, the motor 11 inputs power to a sun gear 15 in a planetary reducer through a half shaft 17, and the planet carrier 13 drives the tire by taking the sun gear 15 as power input and taking the power output.
The gear ring 14 is fixed on the knuckle 12, the sun gear 15 is in spline connection with an output shaft of the motor 11, the planet carrier 13 is fixed on the hub 16 through bolt connection, a hub bearing 161 is arranged between the hub 16 and the knuckle 12, and the tire is mounted on the hub 16, so that rotation between the tire and the knuckle 12 is achieved. A motor bearing is arranged between a rotor frame and a stator of the motor 11, and a stator frame of the motor 11 is fixed on the steering knuckle 12, so that the rotation of the stator and the rotor of the motor 11 is realized. A brake disc 18 is fixed to the hub 16 and a brake caliper 19 is mounted on the knuckle 12 to slow or stop the movement of the hub 16 by braking.
Fig. 14 is a front view of an integrated axle in the low-floor rubber wheel bogie of the intelligent tram based on the wheel side motor. Fig. 15 is a top view of the integrated axle in the low-floor rubber wheel bogie of the intelligent tram based on the wheel side motor.
As shown in fig. 14 and 15, the integrated axle 70 of the present embodiment includes an axle housing 71, a tie rod 72, a left knuckle arm 73, a right knuckle arm 74, and an actuator 75. The left knuckle 101 and the right knuckle 102 of the wheel-side motor assembly 10 are connected with the axle housing 71 through pin shafts. The left-joint arm 73 and the right-joint arm 74 are connected to a left knuckle 101 and a right knuckle 102 of the wheel-side motor assembly 10, respectively.
Here, the left knuckle 101 and the right knuckle 102 of the wheel-side motor assembly 10 are respectively connected to two ends of the tie rod 72, for example, by using a ball joint. Both ends of the actuator 75 are connected to the axle housing 71 and the right knuckle arm 74, respectively, or both ends of the actuator 75 are connected to the axle housing 71 and the left knuckle arm 73, respectively.
According to the structural description, the intelligent tram low-floor rubber wheel bogie based on the wheel-side motor adopts the bogie technology of the wheel-side motor, the rubber wheel bogie technology suitable for low-floor vehicles and the bogie technology capable of actively steering. The problem of insufficient power of four-section or more intelligent rail electric vehicles can be solved, and a full-through low-floor structure of the vehicle can be realized. Meanwhile, the technology can meet the requirement of full-axle steering, and the vehicle has small turning radius and flexible steering. In addition, the technology can also improve the running stability of the intelligent rail electric car.
In conclusion, the intelligent rail electric car low-floor rubber wheel bogie based on the wheel-side motor has the following advantages:
the wheel-side motor technology is adopted to realize all-wheel drive, the problem of insufficient power of four or more sections of intelligent rail electric vehicles is solved, and the requirement of large transportation capacity in intelligent rails is met;
secondly, a fully-through low-floor structure of the vehicle is realized by adopting an independent suspension axle and an integral axle structure, passengers can get on and off conveniently, and the running stability of the intelligent tramcar is improved;
and thirdly, various steer-by-wire mechanisms are adopted, the flexible selection can be realized according to the arrangement of the chassis, the full-axle steer-by-wire function is realized, the turning radius of the vehicle is small, the steering is flexible, and the vehicle is suitable for urban roads in various places.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (11)

1. A wheel-side motor-based low-floor rubber wheel bogie of an intelligent tramcar is characterized by comprising a wheel-side motor assembly, an independent suspension axle, a rubber wheel, a rim, a steering mechanism and a bogie frame; wherein the content of the first and second substances,
the rubber wheel is arranged on the rim, and the rim is locked and fixed on the wheel edge motor assembly;
a steering knuckle on the wheel side motor assembly is connected with an upper cross arm and a lower cross arm of the independent suspension axle;
a steering knuckle arm of the steering mechanism is fixed on a steering knuckle in the wheel side motor assembly, and a steering rocker arm of the steering mechanism is mounted on the bogie frame through a rotating shaft;
the upper and lower crossbars of the independent suspension axle are mounted on the bogie frame.
2. A wheel-side motor-based low-floor rubber wheel bogie of an intelligent rail electric car is characterized by comprising a wheel-side motor assembly, an integral axle, a rubber wheel, a rim, a steering mechanism and a bogie frame; wherein the content of the first and second substances,
the rubber wheel is arranged on the rim, and the rim is locked and fixed on the wheel edge motor assembly;
a steering knuckle on the wheel side motor assembly is connected with an axle housing shaft of the integral axle;
and a steering knuckle arm of the steering mechanism is fixed on a steering knuckle of the wheel side motor assembly.
3. The wheel-side motor based smart rail electric car low-floor rubber wheel bogie of claim 1 or 2, characterized in that the wheel-side motor assembly comprises a planetary reducer, a motor, a disc brake and a knuckle;
the stator frame of the motor is fixedly connected with the steering knuckle, the planetary reducer is installed on the outer end portion of the steering knuckle, and the disc brake is fixed on the planetary reducer.
4. The wheel-side motor based smart rail electric vehicle low-floor rubber wheel bogie as recited in claim 3, wherein the planetary reducer comprises a planet carrier, a gear ring, a sun wheel and a wheel hub, the wheel hub is mounted on the knuckle, the planet carrier is fixedly connected to the wheel hub, and the gear ring is mounted in the planet carrier and fixed with the knuckle.
5. The wheel-side motor based smart rail electric car low-floor rubber wheel bogie of claim 4, characterized in that the motor is connected with a half shaft, the half shaft is installed in the steering knuckle, and the motor inputs power to the sun gear of the planetary reducer through the half shaft.
6. The wheel-side-motor-based smart railcar low-floor rubber wheel bogie according to claim 4, characterized in that said disc brake comprises a brake disc fixed on said wheel hub and a brake caliper mounted on said knuckle for effecting deceleration or stopping movement of said wheel hub by braking.
7. The wheel-side motor based smart-rail electric car low-floor rubber wheel bogie of claim 1, wherein said independent suspension axle comprises an upper cross arm, a lower cross arm, a shock absorber, an air spring and a height valve assembly;
the upper end of the air spring is mounted on the bogie frame, and the lower end of the air spring is mounted on the upper cross arm;
the upper end of the shock absorber is connected to the underframe, and the lower end of the shock absorber is connected to the lower cross arm;
the upper cross arm and the lower cross arm are connected to the bogie frame through rubber bushings.
8. The wheel-side-motor-based smart-rail electric car low-floor rubber wheel bogie as recited in claim 1, wherein the steering mechanism is a break-off steer-by-wire mechanism, comprising a left tie rod, a right tie rod, a middle tie rod, a left rocker arm, a right rocker arm, a left knuckle arm, a right knuckle arm and at least one actuator; wherein the content of the first and second substances,
the left rocker arm and the right rocker arm are mounted on the bogie frame through a rotating shaft;
the left end and the right end of the middle tie rod are respectively connected with the left rocker arm and the right rocker arm;
the left end and the right end of the left transverse pull rod are respectively connected with the left knuckle arm and the right knuckle arm;
the left end and the right end of the right transverse pull rod are respectively connected with the right knuckle arm and the right rocker arm;
the front end and the rear end of the actuator are respectively connected with the right rocker arm and the bogie frame, and/or the front end and the rear end of the actuator are respectively connected with the left rocker arm and the bogie frame;
the left-section arm and the right-section arm are respectively connected to a left steering knuckle and a right steering knuckle of the wheel-side motor assembly.
9. The wheel-side-motor-based smart-rail electric vehicle low-floor rubber wheel bogie as recited in claim 4, wherein the actuator comprises a left actuator and a right actuator, the front end and the rear end of the left actuator are respectively connected with the left rocker arm and the bogie frame, and the front end and the rear end of the right actuator are respectively connected with the right rocker arm and the bogie frame.
10. The wheel-side-motor-based smart-rail electric car low-floor rubber wheel bogie as recited in claim 1, characterized in that the steering mechanism adopts a break-away steer-by-wire mechanism, which comprises a left knuckle arm, a right knuckle arm and two actuators;
the actuator comprises a left actuator and a right actuator, the front end and the rear end of the left actuator are respectively connected with the left knuckle arm and the bogie frame, and the front end and the rear end of the right actuator are respectively connected with the right knuckle arm and the bogie frame;
the left-section arm and the right-section arm are respectively connected to a left steering knuckle and a right steering knuckle of the wheel-side motor assembly.
11. The wheel-side motor based smart-rail electric car low-floor rubber wheel bogie of claim 2, characterized in that the integrated axle comprises an axle housing, a tie rod, a left knuckle arm, a right knuckle arm and an actuator; wherein the content of the first and second substances,
the left steering knuckle and the right steering knuckle of the wheel side motor assembly are connected with the axle housing through pin shafts;
the left-joint arm and the right-joint arm are respectively connected to a left steering knuckle and a right steering knuckle of the wheel-side motor assembly;
a left steering knuckle and a right steering knuckle of the wheel side motor assembly are respectively connected with two ends of the tie rod;
the both ends of actuator respectively with the axle housing right side festival arm is connected, perhaps the both ends of actuator respectively with the axle housing left side festival arm is connected.
CN202010894722.1A 2020-08-31 2020-08-31 Intelligent rail tram low-floor rubber wheel bogie based on wheel-side motor Pending CN114104026A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201026794Y (en) * 2007-04-20 2008-02-27 上海科曼车辆部件系统有限公司 Full-air front independent suspension frame of steering axle of low-floor city floor buses
CN105599591A (en) * 2014-11-24 2016-05-25 舍弗勒技术有限两合公司 Wheel hub drive assembly
CN105644639A (en) * 2015-12-28 2016-06-08 航天重型工程装备有限公司 Mining electric trackless carrier vehicle
CN110525152A (en) * 2019-10-18 2019-12-03 吉林大学 A kind of distributed-driving electric automobile wheel side integrated system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201026794Y (en) * 2007-04-20 2008-02-27 上海科曼车辆部件系统有限公司 Full-air front independent suspension frame of steering axle of low-floor city floor buses
CN105599591A (en) * 2014-11-24 2016-05-25 舍弗勒技术有限两合公司 Wheel hub drive assembly
CN105644639A (en) * 2015-12-28 2016-06-08 航天重型工程装备有限公司 Mining electric trackless carrier vehicle
CN110525152A (en) * 2019-10-18 2019-12-03 吉林大学 A kind of distributed-driving electric automobile wheel side integrated system

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Application publication date: 20220301