Rubber wheel power dispersion bogie assembly

Abstract

A rubber wheel power dispersion bogie assembly, which comprises a wheel-side driving system, an upper kingpin, a lower kingpin, a steering knuckle arm, a steering tie rod, and a steering rocker arm (73). The wheel-side driving system is connected to the upper main pin (11) and the lower main pin (12); the wheel-side driving system is provided with the steering knuckle arm (71); the steering knuckle arm (71) is connected to the steering tie rod (72); the steering tie rod (72) is connected to the steering rocker arm (73); the steering rocker arm (73) is provided with a connecting hole; a steering cylinder on the vehicle is connected to the connecting hole to drive the steering rocker arm (73) to rotate, thereby driving the steering tie rod (72) to move laterally; the steering tie rod (72) enables, by means of the steering knuckle arm (71), the wheel edge driving system to rotate around the upper kingpin (11) and the lower kingpin (12) to achieve vehicle steering. The rubber wheel power dispersion bogie assembly disperses a power system to each wheel edge, increases channel width and implements steering function.

Description

A rubber-tyred power-dispersed bogie assembly Technical Field

[0001] The present invention relates to the technical field of overall structure of rail transit bogies, and more particularly to a rubber-tyred power dispersion bogie assembly. Background Art

[0002] In recent years, my country's urban rail transit has experienced rapid development. Urban rail transit refers to a dedicated public transportation system with continuous guidance capabilities, characterized by dedicated tracks along which vehicles run. Common urban rail transit systems include subways, light rail, and trams. Rubber-tyred trains, known for their energy-saving, cost-effective, and environmentally friendly features, have gained popularity in many large and medium-sized cities.

[0003] At present, there are many rubber-tyred bogie structures at home and abroad, but they have the following problems:

[0004] 1) Difficult to adapt to low-floor layout;

[0005] 2) No steering function;

[0006] 3) It is difficult to provide a larger interior space.

[0007] Chinese utility model CN201821031945.X discloses a vehicle and a wheel-side drive device, which includes: an independent suspension, a wheel hub, a reducer, and a drive component; wherein the drive component drives the wheel hub to rotate through the reducer, and the drive component and the wheel hub are located on the same side of the reducer.

[0008] Chinese utility model CN201921123102.7 provides an integrated independent suspension wheel-side drive system and a vehicle. The integrated independent suspension wheel-side drive system includes a shell, a motor and a reducer are arranged inside the shell, a mounting port is provided on the shell, a cover is connected to the mounting port, and a shaft tube is also provided on the shell. The power output end of the reducer is connected to the wheel-side half-shaft passing through the shaft tube. An upper support arm and a lower support arm are integrally formed on the outer surface of the shell, and a mounting structure for installing an airbag is provided on the upper support arm. An articulated structure for articulating the shock absorber and a fixing structure for fixing the brake unit are provided on the outer surface of the shell or the upper support arm or the lower support arm.

[0009] The technologies involved in the above-mentioned utility models are all wheel-side drive systems suitable for non-drive axles of buses. Their structural characteristics are that the motor and transmission system are arranged on the wheel side and a double wishbone suspension structure with upper and lower swing arms is adopted, but they cannot realize steering function.

[0010] Summary of the Invention

[0011] The purpose of the present invention is to provide a rubber-tyred power dispersion bogie assembly to solve the problem that the bogie structure in the prior art cannot steer.

[0012] To achieve the above-mentioned object, the present invention provides a rubber-tyred power-dispersed bogie assembly, comprising a wheel-side drive system, an upper kingpin, a lower kingpin, a steering knuckle arm, a steering tie rod, and a steering rocker arm:

[0013] The wheel side drive system is connected to the upper kingpin and the lower kingpin;

[0014] The wheel side drive system is equipped with a steering knuckle arm;

[0015] The steering knuckle arm is connected to the steering rod;

[0016] The steering rod is connected to the steering rocker arm;

[0017] The steering rocker arm has a connecting hole;

[0018] The steering cylinder on the vehicle is connected to this connecting hole, driving the steering rocker arm to rotate, driving the steering rod to move laterally. The steering rod causes the wheel-side drive system to rotate around the upper kingpin and lower kingpin through the steering knuckle arm to achieve vehicle steering.

[0019] In one embodiment, the rubber-tire power distribution bogie assembly further includes an upper swing arm, a lower swing arm, an upper pin shaft, and a lower pin shaft:

[0020] The upper kingpin is connected to the upper swing arm through the upper pin shaft, and the upper kingpin rotates relative to the upper swing arm around the upper pin shaft;

[0021] The lower kingpin is connected to the lower swing arm through a lower pin shaft, and the lower kingpin rotates relative to the lower swing arm around the lower pin shaft.

[0022] In one embodiment, the wheel drive system includes a reducer, a motor, a wheel hub, a half shaft and a brake to achieve vehicle driving and braking:

[0023] The reducer is a two-stage reduction gear.

[0024] The first-stage reduction mechanism is a fixed-axis cylindrical gear transmission;

[0025] The secondary reduction mechanism is a planetary gear transmission.

[0026] In one embodiment, the tire-powered dispersed bogie assembly further includes an airbag and an airbag arm:

[0027] An airbag arm is mounted on the upper kingpin, and the airbag is mounted on the airbag arm.

[0028] In one embodiment, the tire-powered distributed bogie assembly further includes a torsion bar spring:

[0029] A torsion bar spring is installed on the upper kingpin.

[0030] In one embodiment, the rubber-tyred power dispersion bogie assembly further includes a shock absorber:

[0031] The shock absorber is mounted on the lower kingpin.

[0032] In one embodiment, the rubber-tyred power distribution bogie assembly further includes a stabilizer bar, and the wheel-side drive system includes a left wheel-side drive system and a right wheel-side drive system:

[0033] The stabilizer bar is connected to the lower swing arms corresponding to the left wheel drive system and the right wheel drive system through connecting rods;

[0034] The steering rocker arms corresponding to the left wheel drive system and the right wheel drive system are connected through a tie rod.

[0035] In one embodiment, the stabilizer bar includes a hydraulic stabilizer bar and an active stabilizer bar.

[0036] In one embodiment, the upper swing arm comprises a split type or an integral type;

[0037] The lower swing arm can be of split type or integral type.

[0038] In one embodiment, the upper kingpin is of a split type;

[0039] The lower kingpin is a split type.

[0040] The present invention proposes a rubber-tyred power dispersion bogie assembly, which disperses the power system to each wheel side, increases the channel width, and realizes the steering function.

[0041] The rubber-tyred power distribution bogie assembly proposed in the present invention has the following beneficial effects:

[0042] 1) Through the design of the upper and lower kingpins, the wheel-side drive system rotates around the kingpin, and the steering function is achieved in conjunction with the steering knuckle arm, steering rod, steering rocker arm, etc.

[0043] 2) The split upper and lower kingpin design allows the wheel drive system to have space to integrate the motor and reducer to achieve the driving function;

[0044] 3) The airbag installation method achieved through the upper kingpin and the airbag arm allows the upper swing arm to have a shorter length to increase the channel width. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which like reference numerals represent like features throughout, wherein:

[0046] FIG1 illustrates a first schematic diagram of a rubber-tyred power distribution bogie assembly according to an embodiment of the present invention;

[0047] FIG2 illustrates a second schematic diagram of a rubber-tyred power distribution bogie assembly according to an embodiment of the present invention;

[0048] FIG3 illustrates a schematic diagram of a reducer according to an embodiment of the present invention.

[0049] The meanings of the reference numerals in the figures are as follows:

[0050] 11 upper kingpin;

[0051] 12 lower kingpin;

[0052] 21 upper pin;

[0053] 22 lower pin;

[0054] 31 upper swing arm;

[0055] 32 lower arm;

[0056] 4a left wheel drive system;

[0057] 4b right wheel side drive system;

[0058] 401 first-stage reduction mechanism;

[0059] 402 two-stage reduction mechanism;

[0060] 51 airbags;

[0061] 52 airbag arm;

[0062] 61 shock absorber;

[0063] 62 stabilizer bar;

[0064] 71 steering knuckle arm;

[0065] 72 steering rod;

[0066] 73 steering rocker arm;

[0067] 74 tie rod. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not intended to limit the invention.

[0069] Figures 1 and 2 respectively disclose a first schematic diagram and a second schematic diagram of a rubber-tire power dispersion bogie assembly according to an embodiment of the present invention. As shown in Figures 1 and 2, the rubber-tire power dispersion bogie assembly proposed in the present invention includes a left wheel-side drive system 4a, a right wheel-side drive system 4b, an upper swing arm 31, a lower swing arm 32, an upper kingpin 11, a lower kingpin 12, an upper pin shaft 21, a lower pin shaft 22, a steering knuckle arm 71, a steering tie rod 72, a steering rocker arm 73, a shock absorber 61, a stabilizer bar 62, an airbag 51 and an airbag arm 52.

[0070] In this embodiment, the wheel drive system includes a left wheel drive system 4a and a right wheel drive system 4b.

[0071] The number of the upper swing arm 31, the lower swing arm 32, the upper kingpin 11, the lower kingpin 12, the upper pin shaft 21, the lower pin shaft 22, the airbag 51, the airbag arm 52, the shock absorber 61, the steering knuckle arm 71, the steering rod 72, and the steering rocker arm 73 is at least 2, which corresponds symmetrically to the left wheel drive system 4a and the right wheel drive system 4b.

[0072] The rubber-tyred power-dispersed bogie assembly proposed in the present invention, through the design of upper and lower kingpins, can enable the wheel-side drive system to rotate around the kingpin, and cooperate with the steering knuckle arm, steering rod, steering rocker arm, etc. to realize the steering function, thereby solving the technical problem that the current existing products cannot steer.

[0073] Taking the left wheel side drive system 4a as an example, the connection relationship and working principle of the above components are explained.

[0074] A steering knuckle arm 71 is installed on the left wheel side drive system 4a;

[0075] The steering knuckle arm 71 is connected to the steering tie rod 72;

[0076] The steering rod 72 is connected to the steering rocker arm 73;

[0077] A connecting hole is left on the steering rocker arm 73;

[0078] The steering cylinder on the vehicle is connected to the connecting hole, driving the steering rocker arm 73 to rotate, driving the steering rod 72 to move laterally, and the steering rod 72 then rotates the left wheel side drive system 4a around the upper kingpin 11 and the lower kingpin 12 through the steering knuckle arm 71 to achieve the steering function.

[0079] The left wheel side drive system 4a is connected to the upper kingpin 11 and the lower kingpin 22 through bearings, and the left wheel side drive system 4a can rotate around the upper and lower kingpins;

[0080] The upper kingpin 11 is connected to the upper swing arm 31 through the upper pin 21. The upper kingpin 11 can rotate relative to the upper swing arm 31 around the upper pin 21.

[0081] The lower kingpin 12 is connected to the lower swing arm 32 via the lower pin shaft 22 . The lower kingpin 12 can rotate relative to the lower swing arm 32 around the lower pin shaft 22 .

[0082] The connection relationship and working principle of the components of the right wheel drive system 4b correspond to those of the left wheel drive system 4a, and will not be repeated here.

[0083] Distributing the power system to each wheel side solves the problem of insufficient road adhesion when the centralized drive is expanded.

[0084] In this embodiment, the upper kingpin 11 and the lower kingpin 12 are of split design, so that the wheel-side drive system has space to integrate the motor and the reducer to realize the driving function.

[0085] In this embodiment, the upper swing arm 31 can be a split type or an integral type.

[0086] In this embodiment, the lower swing arm 32 can be a split type or an integral type.

[0087] In this embodiment, an airbag arm 52 is installed on the upper kingpin 11, and the airbag 51 is installed on the airbag arm 52 by bolts, so that the upper swing arm 31 can have a shorter length to increase the channel width, thereby increasing the channel width and solving the problem of small space above the existing centralized drive shaft.

[0088] In other embodiments, the airbag 51 may be replaced by a torsion bar spring.

[0089] The airbag 51 is also called an air spring. The airbag 51 and the torsion bar spring play a role in mitigating impacts, and the airbag arm 52 serves as a support for installing the airbag.

[0090] After the torsion bar spring replaces the airbag 51 , the airbag arm 52 can be cancelled, and the torsion bar spring is installed on the upper kingpin 11 .

[0091] In this embodiment, the shock absorber 61 is mounted on the lower kingpin 12 by bolts to achieve a vibration reduction function.

[0092] In this embodiment, the stabilizer bar 62 is connected to the lower control arms 32 corresponding to the left wheel drive system 4a and the right wheel drive system 4b through connecting rods, thereby achieving the function of improving lateral stability.

[0093] The stabilizer bar 62 may be a hydraulic stabilizer bar or other active stabilizer bar.

[0094] The steering rocker arms 73 corresponding to the left wheel drive system 4 a and the right wheel drive system 4 b are connected via a tie rod 74 .

[0095] The left wheel drive system 4a and the right wheel drive system 4b respectively integrate components such as a reducer, a motor, a wheel hub, a half shaft, and a brake to realize functions such as driving and braking.

[0096] Different from the transmission structure of the bogie in the prior art, the reducer of the present invention adopts a two-stage reduction, and the transmission ratio is relatively large.

[0097] FIG3 shows a schematic diagram of a reducer according to an embodiment of the present invention. As shown in FIG3 , the left wheel drive system 4a and the right wheel drive system 4b proposed by the present invention have an integrated reducer with two-stage reduction:

[0098] Among them, the first-stage reduction mechanism 401 is a fixed-axis cylindrical gear transmission;

[0099] The secondary reduction mechanism 402 is a planetary gear transmission;

[0100] The processing technology of the front and back sides of the tooth surface is exactly the same, which can realize bidirectional torque transmission.

[0101] The rubber-tyred power distribution bogie assembly proposed in the present invention has the following beneficial effects:

[0102] 1) Through the design of the upper and lower kingpins, the wheel-side drive system rotates around the kingpin, and the steering function is achieved in conjunction with the steering knuckle arm, steering rod, steering rocker arm, etc.

[0103] 2) The split upper and lower kingpin design allows the wheel drive system to have space to integrate the motor and reducer to achieve the driving function;

[0104] 3) The airbag installation method achieved through the upper kingpin and the airbag arm allows the upper swing arm to have a shorter length to increase the channel width.

[0105] Although the above methods are illustrated and described as a series of acts for simplicity of explanation, it is to be understood and appreciated that these methods are not limited by the order of the acts, as some acts may occur in a different order and / or concurrently with other acts from those illustrated and described herein or not illustrated and described herein but understandable to those skilled in the art according to one or more embodiments.

[0106] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0107] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0108] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on their specific circumstances.

[0109] The above embodiments are provided to persons familiar with the art for implementing or using the present invention. Personnel familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the scope of protection of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A rubber-tyred power distribution bogie assembly, characterized in that: Including wheel drive system, upper kingpin, lower kingpin, steering knuckle arm, steering tie rod and steering rocker arm: The wheel side drive system is connected to the upper kingpin and the lower kingpin; The wheel side drive system is equipped with a steering knuckle arm; The steering knuckle arm is connected to the steering rod; The steering rod is connected to the steering rocker arm; The steering rocker arm has a connecting hole; The steering cylinder on the vehicle is connected to this connecting hole, driving the steering rocker arm to rotate, driving the steering rod to move laterally. The steering rod causes the wheel-side drive system to rotate around the upper kingpin and lower kingpin through the steering knuckle arm to achieve vehicle steering.

2. The rubber-tyred power distribution bogie assembly according to claim 1, characterized in that: It also includes the upper swing arm, lower swing arm, upper pin and lower pin: The upper kingpin is connected to the upper swing arm through the upper pin shaft, and the upper kingpin rotates relative to the upper swing arm around the upper pin shaft; The lower kingpin is connected to the lower swing arm through a lower pin shaft, and the lower kingpin rotates relative to the lower swing arm around the lower pin shaft.

3. The rubber-tyred power distribution bogie assembly according to claim 1, characterized in that: The wheel drive system includes a reducer, a motor, a wheel hub, a half shaft and a brake to achieve vehicle driving and braking: The reducer is a two-stage reduction gear. The first-stage reduction mechanism is a fixed-axis cylindrical gear transmission; The secondary reduction mechanism is a planetary gear transmission.

4. The rubber-tyred power distribution bogie assembly according to claim 1, characterized in that: Also includes airbag and airbag arms: An airbag arm is mounted on the upper kingpin, and the airbag is mounted on the airbag arm.

5. The rubber-tyred power distribution bogie assembly according to claim 1, characterized in that: Also includes torsion bar springs: A torsion bar spring is installed on the upper kingpin.

6. The rubber-tyred power distribution bogie assembly according to claim 1, characterized in that: Also includes shock absorbers: The shock absorber is mounted on the lower kingpin.

7. The rubber-tyred power distribution bogie assembly according to claim 2, characterized in that: Also includes a stabilizer bar, the wheel-side drive system includes a left wheel-side drive system and a right wheel-side drive system: The stabilizer bar is connected to the lower swing arms corresponding to the left wheel drive system and the right wheel drive system through connecting rods; The steering rocker arms corresponding to the left wheel drive system and the right wheel drive system are connected through a tie rod.

8. The rubber-tyred power distribution bogie assembly according to claim 7, characterized in that: The stabilizer bar includes a hydraulic stabilizer bar and an active stabilizer bar.

9. The rubber-tyred power distribution bogie assembly according to claim 2, characterized in that: The upper swing arm includes a split type or an integral type; The lower swing arm can be of split type or integral type.

10. The rubber-tyred power distribution bogie assembly according to claim 1, characterized in that: The upper kingpin is of split type; The lower kingpin is a split type.