CN212353993U

CN212353993U - Walking part of rubber-tyred rail system vehicle

Info

Publication number: CN212353993U
Application number: CN202021853268.7U
Authority: CN
Inventors: 任利惠; 黄章行; 王刚; 季元进
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-01-15
Anticipated expiration: 2030-08-31

Abstract

The utility model relates to a walking portion of rubber tyer rail system vehicle, including walking a line body and automobile body, walk a line body and include the axle bridge, the both ends of axle bridge are connected with and walk the road wheel, and the below of axle bridge is passed through slewing bearing and is connected with the guide frame, installs the leading wheel on the guide frame, and the middle part top of axle bridge is provided with the air spring of big flexibility free film formula, and the top bilateral symmetry of axle bridge is provided with horizontal backstop, elasticity side bearing, vertical shock absorber and horizontal shock absorber, is provided with anti side-rolling torsion bar between axle bridge and the automobile body. Compared with the prior art, the utility model has the advantages of improve the lateral stability of vehicle, practice thrift installation space, have higher stability.

Description

Walking part of rubber-tyred rail system vehicle

Technical Field

The utility model belongs to the technical field of rubber tyer rail system vehicle technique and specifically relates to a walking portion of rubber tyer rail system vehicle is related to.

Background

An APM (rubber wheel rail system) is guided by a guide rail, adopts rubber wheels, runs on two parallel flat plate rails, can realize automatic unmanned driving, and is suitable for passenger transport in medium and small cities. The track of the rubber wheel rail system is a steel concrete beam, and the running noise and vibration are smaller than those of steel wheel rail vehicles. The rubber wheel rail system has strong adaptability to line conditions, and the maximum climbing capacity can reach 8% in a long-distance slope section, so that the line can smoothly pass through difficult sections in a city; the turning radius is small, the line design can be optimized, and the land area is reduced, so that the total construction cost of the project is reduced. Each vehicle of the rubber wheel rail system is provided with an independent driving system and a control system, so that the marshalling is very flexible, and the capacity of coping with sudden passenger flow situations is strong.

The walking part is mainly designed in a single-shaft structure and consists of a walking driving system, a guiding system and a suspension system. The running system adopts a drive axle structure of an automobile and mainly comprises an integral axle, a main speed reducer, a differential, a half axle, a wheel reduction gear, a wheel hub and 2 running wheels. The guide system comprises four guide wheels, a guide frame, a rotary bearing and a longitudinal shock absorber, wherein the rotary bearing and the longitudinal shock absorber are arranged between the walking part and the vehicle body, the guide frame is fixedly connected with the vehicle axle, and when a vehicle enters a curve, the guide wheels are restrained by the guide rails to generate a guide force, so that the whole walking part is driven to rotate around the rotary bearing to realize steering. The suspension system is arranged between the slewing bearing and the axle bridge and comprises 1 pair of folded steel plate springs, air springs (connected in parallel), 1 pair of longitudinal pull rods, an anti-rolling torsion bar and a vertical shock absorber. Because the suspension system adopts the design scheme of a heavy-duty automobile, the transverse rigidity is very high, and the transverse stability of the automobile is poor. Chinese patent CN202010002548.5 discloses a single-axle rubber wheel bogie, which cancels a folded steel plate spring and adds a V-shaped longitudinal pull rod, but because the V-shaped longitudinal pull rod restricts the transverse movement between the vehicle body and the running part, the transverse running stability of the vehicle is still poor.

Meanwhile, in the prior art, a walking part is also of a single-shaft structure and consists of a walking driving system, a guiding system and a suspension system. The running system adopts a steering drive axle structure of an automobile and mainly comprises an integral axle, a main speed reducer, a differential, a half shaft, a steering knuckle, a wheel hub and 2 running wheels. The main speed reducer, the differential mechanism and the half shaft are arranged in the axle housing, the main pins of the traveling wheels are arranged at two ends of the axle, the traveling tires are connected with the main pins through steering joints and connected with the half shaft through universal joints, and the motor transmits power to the main speed reducer, the differential mechanism, the half shaft, the universal joints and the wheel hub through coupling joints to drive the traveling wheels to rotate and advance. The guide system comprises 4 guide wheels, a guide frame, a rotary bearing, a tie rod and a trapezoidal steering mechanism, a central guide mode is adopted, when a curve is passed, the guide wheels are constrained by guide rails to enable the guide frame to vertically rotate around a shaft bridge, the tie rod is driven, the tie rod drives a steering knuckle to rotate around a main pin through the trapezoidal steering mechanism, and the walking wheels rotate by a certain angle to complete steering. The suspension system of the automobile continues to use the suspension design scheme of the automobile and consists of 2 symmetrically arranged air springs, a V-shaped longitudinal pull rod group (1 pair of longitudinal pull rods and 1 group of V-shaped pull rods) and a vertical shock absorber, wherein the air springs are small curved bag membrane type air springs used by the automobile and have proper vertical rigidity, but the transverse rigidity is very small and cannot bear transverse load, so that the V-shaped longitudinal pull rod group is arranged to restrain the transverse motion between an axle bridge and an automobile body. Because the transverse rigidity of the V-shaped longitudinal pull rod group is very high, the transverse vibration damping performance does not exist between the vehicle body and the axle bridge, and the transverse stability of the vehicle is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rubber-tyred rail system vehicle (APM) technical field for overcoming the relatively poor defect of the lateral movement stationarity that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a walking portion of rubber tyer rail system vehicle, is including walking portion body and automobile body, it includes the axle bridge to walk the portion body, the both ends of axle bridge are connected with walks the road wheel, the below of axle bridge is connected with the guide frame through slewing bearing, install the leading wheel on the guide frame, the middle part top of axle bridge is provided with the air spring of big flexibility free film type, the top bilateral symmetry of axle bridge is provided with horizontal backstop, elasticity side bearing, vertical shock absorber and horizontal shock absorber, be provided with anti side roll torsion bar between axle bridge and the automobile body.

The middle part of the axle bridge is provided with a mounting seat, the lower part of the air spring is fixed on the mounting seat through a bolt, the upper part of the air spring is connected with the underframe of the vehicle body, and the high-flexibility free-membrane type air spring provides vertical and transverse elasticity for the vehicle body at the same time.

The main body of the anti-rolling torsion bar is arranged on the underframe or the axle bridge of the vehicle body to limit the rolling motion of the vehicle body.

The quantity of leading wheel is 4, and 2 leading wheels are a set of formation direction wheelset, the side of the leading wheel in the direction wheelset laminates mutually, fixes on the same one side of guide frame.

The number of the walking wheels is 2, high-pressure rubber tires are adopted, and explosion-proof steel rings are arranged inside the walking wheels.

The two sides of the axle bridge are respectively provided with 4 longitudinal pull rods, the longitudinal pull rods on the same side are respectively arranged on the upper part and the lower part of the axle bridge, one end of each longitudinal pull rod is hinged with the axle bridge, the other end of each longitudinal pull rod is hinged with the vehicle body and used for transmitting longitudinal traction force and inhibiting nodding motion and shaking motion of the walking part body, but transverse movement between the axle bridge and the vehicle body is not restrained.

The transverse vibration absorber is hinged with the vehicle body and used for attenuating transverse vibration between the vehicle body and the walking part body.

The vertical vibration absorber is hinged with the vehicle body and used for attenuating vertical vibration between the vehicle body and the walking part body.

The guide frame is connected with a transverse pull rod, the other end of the transverse pull rod is connected with a trapezoidal steering mechanism of the walking wheels, when the guide frame passes through a curve, the guide wheels are constrained by the guide rails to enable the guide frame to vertically rotate around the axle to drive the transverse pull rod, the transverse pull rod drives the walking wheels to rotate around the main pin through the trapezoidal steering mechanism, and the walking wheels rotate by a corresponding angle to complete steering.

The number of the elastic side bearings is 2, the lower parts of the elastic side bearings are fixed on the axle bridge through bolts, and when the air spring fails and breaks or loses air, the elastic side bearings receive the vehicle body to prevent the vehicle body from turning over; when the air spring is in a normal working state, a gap exists between the elastic side bearing and the underframe of the vehicle body, and the elastic side bearing is not in contact with the vehicle body.

The number of the transverse stopping blocks is 2, the transverse stopping blocks are elastic, and a gap exists between each transverse stopping block and the corresponding vehicle body and is used for limiting overlarge transverse displacement between the vehicle body and the walking part body.

A main speed reducer, a differential and a half shaft are arranged in a shell of the axle bridge, and main pins of traveling wheels are arranged at two ends of the shell.

Furthermore, a wheel hub of the walking wheel is connected with a steering knuckle through a rolling bearing, the steering knuckle is connected with a half shaft through a universal joint, and the universal joint is an equal angular velocity universal joint.

The axle bridge is connected with a motor, and the motor transmits power to the main speed reducer, the differential mechanism, the half shaft, the universal joint and the wheel hub through a coupling to drive the traveling wheels to rotate and advance.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a big flexibility free membrane formula air spring put in can provide vertical and horizontal elasticity simultaneously, cooperates vertical and transverse shock absorber, has realized vertical and transverse damping effect, has improved the stationarity of vehicle, has practiced thrift installation space simultaneously.

2. The utility model discloses an add elasticity side bearing and increase safety margin, security when guaranteeing air spring air-free state provides anti rolling ability simultaneously, prevents that the automobile body from taking place the rolling and toppling.

3. The utility model discloses a 4 vertical pull rods of space parallel arrangement not only are used for the transmission of vertical traction force, have still restrained the nodding motion of axle bridge and the motion of shaking the head to do not retrain the sideslip motion between axle bridge and the automobile body.

4. The utility model discloses an add horizontal shelves that end, restriction automobile body and walk the too big lateral displacement between the running gear, security when guaranteeing the vehicle operation.

5. The utility model discloses be provided with anti rolling torsion bar between axle and automobile body for provide the anti rolling rigidity between automobile body and the axle, restrict the rolling motion of automobile body.

Drawings

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

FIG. 2 is a front view of the present invention;

fig. 3 is a top view of the present invention.

Reference numerals:

1-running wheels; 2-a transverse damper; 3-an elastic side bearing; 4-longitudinal pull rod; 5-a guide wheel; 6, an air spring; 7-a transverse pull rod; 8-a guide frame; 9-vertical shock absorber; 10-axle bridges; 11-a transverse damper; 12-slewing bearing.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in figure 1, the running part of the rubber-tyred track system vehicle is compact in structure and improves the transverse stability of the vehicle, and comprises a running part body and a vehicle body, wherein the running part body comprises an axle bridge 10, two ends of the axle bridge 10 are connected with running wheels 1, the lower part of the axle bridge 10 is connected with a guide frame 8 through a rotary bearing 12, the guide frame 8 is provided with guide wheels 5, a large-flexibility free-film air spring 6 is arranged above the middle part of the axle bridge 10, transverse stoppers 2, elastic side bearings 3, a vertical shock absorber 9 and a transverse shock absorber 11 are symmetrically arranged on two sides above the axle bridge 10, and an anti-rolling torsion bar is arranged between the axle bridge 10 and the vehicle body.

The middle part of the axle 10 is provided with a mounting seat, the lower part of the air spring 6 is fixed on the mounting seat through a bolt, the upper part of the air spring is connected with the underframe of the vehicle body, a positioning pin of an upper cover plate of the air spring is inserted into the underframe of the vehicle body and is connected with an additional air chamber through an air hole of the upper cover plate, and vertical and horizontal elasticity is provided for the vehicle body.

The air spring 6 with high flexibility and free film type obtains ideal nonlinear stiffness characteristics of low stiffness and low vibration frequency, the stiffness of the spring changes along with the change of load, and the stability of the transverse running of the vehicle body is obviously improved.

The main body of the anti-rolling torsion bar is arranged on the underframe of the vehicle body or on the axle 10, when the vehicle body rolls, the anti-rolling torsion bar deforms to generate acting force to limit the side rolling movement of the vehicle body, but does not influence the vertical floating movement of the vehicle body.

The leading wheel 5 is the solid rubber wheel that has the steel auxiliary wheel, and quantity is 4, and 2 leading wheels 5 are a set of formation direction wheelset, and the side of leading wheel 5 in the direction wheelset laminates mutually, fixes on same one side of guide frame 8, is the horizontality.

The number of the walking wheels 1 is 2, which is responsible for bearing and walking, and the high-pressure rubber tire is adopted, and an anti-explosion steel ring is arranged in the high-pressure rubber tire, so that the vehicle body is supported when the tire is exploded.

The two sides of the axle bridge 10 are respectively provided with 4 longitudinal pull rods 4, one end of each longitudinal pull rod 4 is hinged with the axle bridge 10, the other end of each longitudinal pull rod 4 is hinged with the vehicle body and used for transmitting longitudinal traction force, the longitudinal pull rods 4 on the same side are respectively arranged on the upper portion and the lower portion of the axle bridge 10, a height difference is formed between the longitudinal pull rods 4 on the upper portion and the lower portion and used for restraining nodding movement of the axle bridge 10, the longitudinal pull rods 4 are distributed on the two sides of the axle bridge 10, shaking movement of the axle bridge 10 is restrained, and transverse movement between the axle bridge 10 and the vehicle body is not restrained.

As shown in fig. 3, a transverse damper 11 is hinged to the vehicle body for damping transverse vibration between the vehicle body and the running gear body; the vertical vibration absorber 9 is hinged with the vehicle body and is used for attenuating vertical vibration between the vehicle body and the walking part body.

As shown in fig. 2, a transverse pull rod 7 is connected to the guide frame 8, the other end of the transverse pull rod 7 is connected with a trapezoidal steering mechanism of the running wheel 1, the running part body adopts a central guiding mode, the left and right guide wheels 5 clamp a central i-shaped or groove-shaped guide rail, when a curve is passed, the guide wheels 5 are constrained by the guide rail to enable the guide frame 8 to vertically rotate around the axle 10 to drive the transverse pull rod 7, and the transverse pull rod 7 drives the running wheel 1 to rotate around the main pin through the trapezoidal steering mechanism, so that the running wheel 1 rotates by a corresponding angle to complete steering.

The number of the elastic side bearings 3 is 2, a stacked rubber pile is adopted, the upper cover plate, the lower cover plate and the middle partition plate are steel flat plates, the lower parts of the upper cover plate, the lower cover plate and the middle partition plate are fixed on the axle bridge 10 through bolts, and when the air spring 6 fails and breaks or loses air, the elastic side bearings 3 receive the vehicle body to prevent the vehicle body from turning on one side; when the air spring 6 is in a normal working state, a gap exists between the elastic side bearing 3 and the underframe of the vehicle body, and the elastic side bearing is not in contact with the vehicle body.

The number of the transverse stopping blocks 2 is 2, the transverse stopping blocks are made of metal and rubber and have elasticity, a gap exists between each transverse stopping block 2 and the vehicle body, and when the vehicle body is in transverse displacement, the transverse stopping blocks are in contact with the vehicle body to limit the transverse displacement of the vehicle body, so that the safety of the vehicle is guaranteed.

A main speed reducer, a differential mechanism and a half shaft are arranged in a shell of the axle 10, and a main pin of the traveling wheel 1 is arranged at two ends of the shell.

The wheel hub of the walking wheel 1 is connected with a steering knuckle through a rolling bearing, the steering knuckle is connected with a half shaft through a universal joint, and the universal joint is an equal angular velocity universal joint.

The axle 10 is connected with a motor, and the motor transmits power to a main speed reducer, a differential mechanism, a half shaft, a universal joint and a wheel hub through a coupling to drive the traveling wheel 1 to rotate and advance.

In addition, it should be noted that the shapes of the components, the names of the components, and the like of the specific embodiments described in the present specification may be different, and the above description is only an example of the structure of the present invention. All equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications or additions may be made to the described embodiments or similar methods may be adopted by those skilled in the art without departing from the scope of the invention as defined in the claims.

Claims

1. The utility model provides a walking portion of rubber tyer rail system vehicle, its characterized in that, is including walking portion body and automobile body, it includes axle bridge (10) to walk the portion body, the both ends of axle bridge (10) are connected with and walk road wheel (1), the below of axle bridge (10) is connected with guide frame (8) through slewing bearing (12), install leading wheel (5) on guide frame (8), the middle part top of axle bridge (10) is provided with big flexibility free film type air spring (6), the top bilateral symmetry of axle bridge (10) is provided with horizontal backstop (2), elasticity side bearing (3), vertical shock absorber (9) and horizontal shock absorber (11), be provided with anti-side-rolling torsion bar between axle bridge (10) and the automobile body.

2. The running gear of a rubber-tyred rail system vehicle according to claim 1, wherein the axle (10) has a mounting seat in the middle, the lower portion of the air spring (6) is fixed to the mounting seat by bolts, and the upper portion is connected to the underframe of the vehicle body.

3. The running gear of a rubber-tyred rail system vehicle according to claim 1, wherein the number of guide wheels (5) is 4, and 2 guide wheels (5) form a guide wheel set, and the side surfaces of the guide wheels (5) in the guide wheel set are attached to each other and fixed on the same side of the guide frame (8).

4. The running gear of a rubber-tyred rail system vehicle according to claim 1, wherein 4 longitudinal tie rods (4) are respectively arranged on two sides of the axle (10), the longitudinal tie rods (4) on the same side are respectively arranged on the upper part and the lower part of the axle (10), and one end of each longitudinal tie rod (4) is hinged to the axle (10) while the other end is hinged to the vehicle body.

5. The running gear of a rubber-tyred rail system vehicle according to claim 1, characterized in that the transverse shock absorber (11) is articulated to the vehicle body.

6. The running gear of a rubber-tyred rail system vehicle according to claim 1, characterized in that the vertical shock absorber (9) is articulated to the vehicle body.

7. The running gear of a rubber-tyred rail system vehicle according to claim 1, characterized in that a transverse tie rod (7) is connected to the guide frame (8), and the other end of the transverse tie rod (7) is connected to the trapezoidal steering mechanism of the running wheels (1).

8. The running gear of a rubber-tyred rail system vehicle according to claim 1, wherein the lower portion of the elastic side bearing (3) is bolted to the axle (10).

9. The running gear of a rubber-tyred rail system vehicle according to claim 1, characterized in that the axle (10) has a final drive, a differential and half shafts inside its housing, and has king pins for the running wheels (1) at both ends.

10. The running gear of a rubber-tyred rail system vehicle according to claim 9, characterized in that the wheel hub of the running wheel (1) is connected to a knuckle by a rolling bearing, and the knuckle is connected to a half shaft by a universal joint.