WO2021103126A1

WO2021103126A1 - Bogie wheelset having steerable rubber wheels, and rubber-tired bogie

Info

Publication number: WO2021103126A1
Application number: PCT/CN2019/123918
Authority: WO
Inventors: 门永林; 肖遥; 冯遵委; 黄先富; 黄之军; 郑天锐; 邓新才
Original assignee: 中车南京浦镇车辆有限公司
Priority date: 2019-11-25
Filing date: 2019-12-09
Publication date: 2021-06-03
Also published as: CN110816167A

Abstract

A bogie wheelset having steerable rubber wheels (2), and a rubber-tired bogie. The bogie wheelset comprises an axle (1) and the rubber wheels (2) disposed at two ends of the axle (1). Each rubber wheel (2) can steer relative to the axle (1) along a steering axis perpendicular to a road surface, and two of the rubber wheels (2) in the bogie wheelset steer in a synchronous manner. The bogie wheelset further comprises a steering drive mechanism (3) for driving the rubber wheels (2) to perform synchronous steering. The rubber-tired bogie comprises the bogie wheelset, and further comprises a frame (4) and a connection bolster (5) mounted on the frame (4). A slewing bearing (6) is provided at an upper end of the connection bolster (5), and is connected to a vehicle body.

Description

Bogie wheel set with steerable rubber wheels and rubber tire bogie

Technical field

The invention belongs to the field of vehicle bogies, and particularly relates to a bogie wheel set with steerable rubber wheels and a rubber tire bogie.

Background technique

Existing rubber-tired bogies, such as Chinese patent CN105197047 "a rubber-tired low-floor bogie", its independent wheelsets include rubber wheels, braking devices, axle bridges and transmission devices. The braking devices are located on the rubber wheels. The inner side; the axle bridge includes a main body with a U-shaped recess in the middle and a connecting portion on the same axis at both ends of the main body; the connecting portion is a hollow structure; the transmission device includes a bearing shaft box and a variable transmission gear box And the drive shaft, the drive shaft penetrates the connecting part of the hollow structure, the drive shaft is located at one end of the axle bridge main body and is connected to the direction-changing transmission gear box, the direction-changing transmission gear box drives the drive shaft to rotate, and the other end of the drive shaft is fixedly connected to the bearing shaft The bearing axle box rotates under the transmission of the drive shaft; the inner surface of the bearing axle box is fixed on the outer surface of the hollow structure connecting part, and the outer surface of the bearing axle box is equipped with rubber wheels; the rubber wheels are in the bearing axle box The motor gearbox transmission device is installed in the middle of the side beam of the frame, including the motor and the gearbox. The motor and the gearbox are designed as an integral type. The motor is arranged horizontally, the gearbox is arranged longitudinally and the gearboxes are arranged at the same time. Both ends are output; the motor gearbox transmission device is respectively connected to two variable-direction transmission gearboxes located on the same side of the motor gearbox transmission device through two universal joints. There are many mechanical connection interfaces between the upper and lower bodies of the rubber-tyred truck using this kind of rubber-tyred bogie, and it is difficult to replace the bogie in the case of a rubber-tyred truck failure; at the same time, the rubber-tyred truck actively controls the rotation speed between the left and right wheels through the guidance control system It is difficult to realize the curve driving of the vehicle, which requires high precision of the guidance control system, is difficult to realize and has a high failure rate; the bogie relies on 4 steel springs to adapt to the turning angle between the rubber wheeled vehicle and the bogie when the rubber wheeled vehicle passes the curve. The design requirements for steel springs are high. Rubber-tyred vehicles cannot pass the extremely small curve radius less than 20m, and the adaptability of rubber-tyred vehicles is limited.

The traditional rubber-wheeled buses also have the following shortcomings:

1) Insufficient passenger capacity requires a large number to meet people's travel needs and increase urban congestion;

2) The axle load is small, not more than 10t, generally 7t;

3) Although the bus can increase the vehicle's one-way passenger transport volume by increasing the length of the vehicle or increasing the number of vehicle compartments, the increase in the length of the body can increase the passenger capacity of the vehicle to a certain extent, but the room for increasing the passenger capacity is limited. As the length of the vehicle body increases, the driving flexibility of the vehicle decreases, and the dynamic envelope space of the vehicle when cornering is increased. The longer the vehicle body, the larger the envelope space, which affects the safe operation of other road vehicles, and the vehicle itself It is also impossible to pass through the narrow and small curved roads in the urban area.

Summary of the invention

In order to solve the above problems, the present invention provides a bogie wheel set with steerable rubber wheels and a rubber tire bogie, which are used for vehicles traveling on ordinary roads. By increasing axle load, precise all-wheel steering control, and increasing vehicles as needed The number of carriages is long and marshalled, which can effectively increase the number of one-way passengers carried by the vehicle; compared with the existing rubber-tyred vehicles, it can pass through a smaller curve radius, and is easy to assemble and has a compact structure.

Technical Solution: The present invention proposes a bogie wheel set with steerable rubber wheels, including an axle and rubber wheels installed at both ends of the axle; each of the rubber wheels can steer relative to the axle along a steering axis perpendicular to the road surface, And the steering of the two rubber wheels of the bogie wheel set is synchronized; the bogie wheel set also includes a steering drive mechanism; the steering drive mechanism is used to drive the rubber wheels to steer synchronously.

Further, the steering drive mechanism includes a hydraulic cylinder and a piston slidably mounted in the hydraulic cylinder; the piston slides left and right in a direction parallel to the axle under hydraulic drive; the left and right sides of the piston are respectively provided with steering push rods, Used to push two rubber wheels to steer synchronously.

Further, the steering drive mechanism further includes an oil supply unit and a three-position five-way reversing valve; the hydraulic oil of the oil supply unit is connected to the pressure oil port P of the three-position five-way reversing valve, and the three-position five-way reversing valve The working oil port A of the valve is connected to one side of the piston in the hydraulic cylinder; the working oil port B of the three-position five-way reversing valve is connected to the other side of the piston in the hydraulic cylinder.

Further, the axle is an axle bridge, including a transmission input shaft and an axle housing; a transmission output shaft is fixed on the rubber wheels; the transmission input shaft and the transmission output shaft are connected by a universal coupling.

Further, each of the rubber wheels is provided with a steering knuckle; one end of the steering knuckle is located at the rotation axis of the rubber wheel, and the rubber wheel is rotatably connected to one end of the steering knuckle; the other end of the steering knuckle is connected by an articulated shaft Axle axle housing; the steering drive mechanism pushes the rubber wheels to steer through the steering knuckle connection.

Further, the pivot axis of the articulated shaft and the steering axis of the rubber wheel are located on the same plane; and the upper end of the pivot axis of the articulated shaft is inclined toward the center of the bogie.

A rubber tire bogie includes the bogie wheel set described above.

Further, the rubber tire bogie also includes a frame and a connecting bolster mounted on the frame; the upper end of the connecting bolster is provided with a slewing bearing for connecting the car body.

Further, the rubber tire bogie also includes a motor drive device; the motor drive device is located in the middle of the frame and is arranged longitudinally; the motor drive device transmits the traction torque through the axle to the rubber tires on the left and right sides of the axle.

Further, the rubber tire bogie also includes a secondary suspension device located between the connecting bolster and the frame; the secondary suspension device includes two secondary springs and two lateral reducers located between the connecting bolster and the frame. The two secondary springs are arranged symmetrically along the center line of the frame; the four vertical dampers are located between the two secondary springs and are centrally symmetrically arranged; so The two transverse shock absorbers are arranged obliquely and symmetrically between the frame and the connecting corbel.

Beneficial effects:

First, when passing a curve, the steering drive mechanism can push the two rubber wheels of the same bogie wheel pair to steer and deflect to a certain angle simultaneously, so that the rubber tire bogie drives the rubber wheeled vehicle through the curve. For more precise control, the rubber wheels of the two front and rear bogie wheel sets can control the deflection angle according to the size of the line curve; at the same time, the axle bridge can control the speed difference of the rubber wheels on the left and right sides, and multiple factors participate in the control of the steering. , To achieve precise control and extremely small turning radius.

Second, a slewing bearing is set between the rubber-tired bogie and the car body. The longitudinal force transmission between the rubber-tired bogie and the car body is completed by the slewing ring bearing. The slewing ring bearing can make the car body horizontal relative to the rubber-tired bogie It can rotate freely in direction and cooperate with the steerable rubber wheels of the bogie wheel set of the present invention. It can be used on rubber-tyred vehicles, so that the envelope of the whole vehicle can be strictly controlled when the rubber-tyred vehicle passes a small curve, which solves the problem of traditional multiple knots. The envelope of the bus tail is getting bigger and bigger, and the sweeping space is too large to pass the small radius curve of urban road traffic. The rubber-tired vehicle using the rubber-tired bogie of the present invention can pass a very small curve radius of less than 15m, and is more suitable for running on urban road traffic lines.

Third, the rubber-tired bogie adopts a modular design. The front and rear wheels of the two bogies are completely the same and can be interchanged. The frame and the connecting bolster are pre-assembled as a whole and then connected to the car body. The rubber-tired bogie and the car body are connected. The mechanical interface only has the mounting bolts of the slewing bearing, the upper and lower body interfaces are simple, the disassembly and replacement of the rubber tire bogie is convenient, and it is easy to realize the rapid landing and landing of the vehicle and vehicle rescue in emergency situations.

Fourth, the rubber-tired bogie is equipped with two bogie wheel sets. The optimized wheel-set structure can carry greater weight. The maximum axle load of a single rubber wheel set can reach 12.5t. At the same time, the bogie structure is more compact and is made of rubber wheels. The lower part of the car saves more space to install other equipment.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the rubber tire bogie of the present invention;

Figure 2 is a schematic diagram of the structure of the bogie wheel set and the motor drive device of the present invention;

Figure 3 is a schematic diagram of the structure of the steering drive mechanism of the present invention;

4 is a schematic diagram of the structure of the connection between the axle and the rubber wheel of the present invention;

5 is a schematic structural diagram of the second-series suspension device of the present invention from a first perspective;

6 is a schematic structural diagram of the second-series suspension device of the present invention from a second perspective;

Figure 7 is a schematic structural diagram of the framework of the present invention;

Figure 8 is a schematic view of the steering state of a rubber-tired vehicle using the rubber-tired bogie of the present invention;

Fig. 9 is a schematic diagram of a long and large marshalling vehicle using the rubber tire bogie of the present invention.

Detailed ways

The present invention proposes a bogie wheel set with steerable rubber wheels, including an axle 1 and rubber wheels 2 mounted on both ends of the axle 1.

As shown in FIG. 4, the axle 1 is an axle, including a transmission input shaft 101 and an axle housing 102; the rubber wheel 2 is fixed with a transmission output shaft 201. The transmission input shaft 101 and the transmission output shaft 201 are connected by a universal coupling 202, so that each of the rubber wheels 2 can be steered relative to the axle 1 along a steering axis perpendicular to the road surface.

Each rubber wheel 2 is also provided with a steering knuckle 203; one end of the steering knuckle 203 is located at the rotation axis of the rubber wheel 2, and the rubber wheel 2 is sleeved on the outer circumference of one end of the steering knuckle 203, and between the two It is connected by a bearing 204 so that the rubber wheel 2 can rotate along the steering knuckle 203.

The other end of the steering knuckle 203 is connected to the axle housing 102 through a hinged shaft. The axis of the hinge shaft and the steering axis of the rubber wheel 2 are located on the same plane. When the vehicle turns, the upper end of the rubber wheel 2 is tilted to the outside, so the upper end of the hinge axis axis line is set to tilt toward the center of the bogie, and the axle 1 can apply a force of returning to the rubber wheel 2 to make the rubber wheel 2 turn and enter After the straight track, it will return to the center quickly and reduce the wear of the tires.

As shown in FIG. 3, the bogie wheel set further includes a steering drive mechanism 3; the steering drive mechanism 3 is connected through a steering knuckle 203 to push the rubber wheels 2 to steer synchronously.

The steering drive mechanism 3 includes a hydraulic cylinder 301 and a piston 302 slidably mounted in the hydraulic cylinder 301.

The steering drive mechanism further includes an oil supply unit 304 and a three-position five-way reversing valve 305; the hydraulic oil of the oil supply unit 304 is connected to the pressure oil port P of the three-position five-way reversing valve 305. The working oil port A of the two-way reversing valve 305 is connected to one side of the piston 302 in the hydraulic cylinder 301; the working oil port B of the three-position five-way reversing valve 305 is connected to the other side of the piston 302 in the 301.

The hydraulic oil enters from the pressure port P and flows through the working port A to the cylinder on the left side of the piston 302; the oil pressure of the cylinder on the left side of the piston 302 increases, pushing the piston 302 to move to the right; the hydraulic pressure of the cylinder on the right side of the piston 302 The oil returns to the oil supply unit 304 through the working oil port B; the same principle can control the piston 302 to move to the left.

The three-position five-way reversing valve 305 can also use other forms of control valve groups, which can control the hydraulic system to realize the steering function.

The left and right sides of the piston 302 are respectively provided with steering push rods 303. The two steering push rods 303 are respectively connected to the steering knuckles 203 of the two rubber wheels 2. The connection between the steering push rods 303 and the steering knuckles 203 is not located at the rubber wheel 2. The symmetry plane perpendicular to the road surface pushes the two rubber wheels 2 to steer synchronously.

The inner side of the rubber wheel 2 described in this embodiment is also provided with a braking device 9 which adopts electric control, pneumatic control or hydraulic control.

As shown in Fig. 1 and Fig. 2, the present invention also proposes a rubber-tired bogie, which includes the two aforementioned bogie wheel sets arranged front and rear.

The rubber tire bogie also includes a frame 4 and a contact bolster 5 installed on the frame 4. The bogie wheel set is provided with a frame mounting seat 103 for assembling with the frame 4. The upper end of the connecting bolster 5 is provided with a slewing bearing 6 for connecting the car body. There are rolling elements between the inner ring and the outer ring of the slewing bearing 9 that can rotate freely, the inner ring is connected with the contact bolster 5, and the outer ring is connected with the car body. The longitudinal force transmission between the rubber-tired bogie and the car body is completed by the slewing bearing 6. The slewing ring bearing 6 allows the car body to rotate freely in the horizontal direction relative to the rubber-tired bogie, which is similar to the steering wheel set of the bogie of the present invention. The rubber wheels are used in conjunction with rubber-tyred vehicles, as shown in Figure 8, so that the envelope of the entire vehicle can be strictly controlled when the rubber-tyred vehicle passes a small curve, which solves the problem that the envelope of the traditional multi-section bus is getting bigger and bigger. , The sweeping space is too large to pass the small radius curve of urban road traffic. The rubber-tired vehicle using the rubber-tired bogie of the present invention can pass a very small curve radius of less than 15m, and is more suitable for running on urban road traffic lines.

In addition, the frame 4 and the connecting bolster 5 are pre-assembled as a whole and then connected to the car body. The mechanical interface between the rubber tire bogie and the car body is only the mounting bolts of the slewing bearing 6. The upper and lower body interfaces are simple, and the rubber is removed and replaced. The tyre bogie is convenient, and it is easy to realize the vehicle rescue in the case of fast landing and landing and emergency situations.

The rubber tire bogie also includes a motor drive device 7; the motor drive device 7 is located in the middle of the frame 4 and is arranged longitudinally. The motor drive device 7 can be a back-to-back three-phase asynchronous AC motor, or two three-phase asynchronous AC motors 2-6 can be used in combination. The motor drive device 7 is respectively connected to two axle bridges through a coupling 701, and transmits traction torque to the rubber wheels 2 on the left and right sides of each axle bridge, and drives the rubber wheels 2 to run on urban traffic roads.

As shown in Figures 5 and 6, the rubber tire bogie also includes a secondary suspension device 8 located between the connecting bolster 5 and the frame 4; the secondary suspension device 8 includes a secondary suspension device 8 located between the connecting bolster 5 and the frame 4. Two secondary springs 801, two transverse dampers 802 and four vertical dampers 803.

A traction device 10 is also provided between the connection corbel 5 and the frame 4 for transmitting longitudinal force. The traction device 10 of this embodiment adopts two traction rods that are arranged diagonally and symmetrically along the longitudinal direction. The traction device 10 can also adopt four traction rods or other common traction methods in the rail transit industry.

The two secondary springs 801 are arranged symmetrically along the center line of the frame 4 to provide lateral and vertical stiffness and an emergency auxiliary rubber stack is provided to ensure that the vehicle can continue to operate safely when the secondary spring 801 fails.

The four vertical shock absorbers 803 are located between the two secondary springs 801, and are arranged symmetrically. They are used to buffer vehicle vibrations and provide vehicle comfort. At the same time, they have the lifting function of the whole vehicle. The four vertical dampers can be lifted at the same time. The shock absorber 803 brings the entire rubber-tired bogie together, instead of the original hoisting device of the traditional rail transit vehicle bogie, and reduces the bogie components without reducing the function of the bogie, and there are fewer failure points , Higher security.

The two lateral shock absorbers 802 are arranged obliquely and symmetrically between the frame 4 and the connecting bolster 5 to restrain the lateral movement between the frame 4 and the vehicle body.

As shown in Figure 7, the frame 4 includes a side beam 401, a cross beam 402, an end beam 403, a motor mounting seat 404, an air spring mounting seat 405, a traction rod mounting seat 406, a vertical shock absorber mounting seat 407, and a steering cylinder mounting seat 408. The side beams 401, the recessed lower cross beams 402, and the end beams 403 constitute the main body of the frame 4. The motor mounting base 404 is used to install the motor drive device 7. The air spring mounting seat 405 is used to support two secondary springs 801. The traction rod mounting seat 406 is used to install the traction device 10, and the traction rod mounting seat 406 in this embodiment is arranged diagonally symmetrically. The vertical shock absorber mounting base 407 is connected with the vertical shock absorber 803, and the steering cylinder mounting base 408 is connected with the hydraulic cylinder 301 of the steering device 7. The frame of the invention is easy to assemble with other components and has a compact structure.

When the rubber tire bogie and the corresponding rubber tire vehicle of the present invention are running on urban traffic roads, the motor drive device 7 transmits the longitudinal driving force to the rubber wheels 2 through the axle bridge, and drives the rubber tires 2 on the urban traffic roads. run. When the rubber-tyred vehicle is running on a straight line, the steering drive mechanism does not act; when passing through a curve, the steering drive mechanism pushes the two rubber wheels 2 of the same bogie wheel pair to turn synchronously, so that the rubber-tired bogie drives the rubber-tyred vehicle through the curve. For more precise control, the rubber wheels 2 of the two front and rear bogie wheel sets can be controlled to have different deflection angles according to the size of the line curve. At the same time, the axle bridge can control the speed difference of the rubber wheels 2 on the left and right sides, and multiple factors participate in the control of the steering to achieve precise control and a very small turning radius. When the rubber-tyred vehicle is turning, the slewing bearing 6 can allow the car body to rotate freely in the horizontal direction relative to the rubber-tired bogie, and cooperates with the steerable rubber wheels of the bogie wheel set of the present invention. The envelope of the entire vehicle can also be strictly controlled when the vehicle passes a small curve, which solves the problem that the envelope of the traditional multi-section bus is getting larger and larger, and the sweeping space is too large to pass the small radius curve of urban road traffic. The rubber-tired vehicle using the rubber-tired bogie of the present invention can pass a very small curve radius of less than 15m, and is more suitable for running on urban road traffic lines.

As shown in Figure 9, the rubber-tired bogie is also suitable for long and large marshalling vehicles. Each car uses the rubber-tired bogie. The long and large marshalling vehicles run on ordinary roads without steel rails and can pass very small vehicles less than 15m. The radius of the curve, and each car can run according to the set route without deviation of subsequent cars, which can effectively increase the number of one-way passengers carried by the vehicle.

Claims

A bogie wheel set with steerable rubber wheels, comprising an axle (1) and rubber wheels (2) installed at both ends of the axle (1); characterized in that: each of the rubber wheels (2) can run along a vertical The steering axis on the road turns relative to the axle (1), and the steering of the two rubber wheels (2) of the bogie wheel set is synchronized; the bogie wheel set also includes a steering drive mechanism (3); the steering drive mechanism (3) Used to drive rubber wheels (2) Synchronous steering.
The bogie wheel set with steerable rubber wheels according to claim 1, characterized in that: the steering drive mechanism (3) includes a hydraulic cylinder (301) and a piston (302) slidably mounted in the hydraulic cylinder (301) ); The piston (302) slides left and right in a direction parallel to the axle (2) under hydraulic drive; the left and right sides of the piston (302) are respectively provided with steering push rods (303) for pushing two rubbers The wheels (2) turn synchronously.
The bogie wheel set with steerable rubber wheels according to claim 2, characterized in that: the steering drive mechanism further comprises an oil supply unit (304) and a three-position five-way reversing valve (305); the supply The hydraulic oil of the oil unit (304) is connected to the pressure port P of the three-position five-way reversing valve (305), and the working port A of the three-position five-way reversing valve (305) is connected to the piston in the hydraulic cylinder (301) One side of (302); the working oil port B of the three-position five-way reversing valve (305) is connected to the other side of the piston (302) in (301).
The bogie wheel set with steerable rubber wheels according to any one of claims 1-3, characterized in that: the axle (1) is an axle axle, including a transmission input shaft (101) and an axle axle housing ( 102); The rubber wheel (2) is fixed with a transmission output shaft (201); the transmission input shaft (101) and the transmission output shaft (201) are connected by a universal coupling (202).
The bogie wheel set with steerable rubber wheels according to claim 4, characterized in that: each rubber wheel (2) is provided with a steering knuckle (203); one end of the steering knuckle (203) is located at At the rotation axis of the rubber wheel (2), the rubber wheel (2) can be rotatably connected to one end of the steering knuckle (203); the other end of the steering knuckle (203) is connected to the axle housing (102) through a hinged shaft; The steering drive mechanism (3) is connected to push the rubber wheels (2) to turn through the steering knuckle (203).
The bogie wheel set with steerable rubber wheels according to claim 5, characterized in that: the hinge axis axis line and the steering axis of the rubber wheel (2) are located on the same plane; and the upper end of the hinge axis axis line Tilt to the center of the bogie.
A rubber tire bogie, characterized by comprising the bogie wheel set according to any one of claims 1-6.
The rubber tire bogie according to claim 7, characterized in that it further comprises a frame (4) and a contact bolster (5) installed on the frame (4); the upper end of the contact bolster (5) is provided with The slewing bearing (6) is used to connect the car body.
The rubber tire bogie according to claim 8, characterized in that it further comprises a motor drive device (7); the motor drive device (7) is located in the middle of the frame (4) and is arranged longitudinally; the motor drive device ( 7) The traction torque is transmitted to the rubber tires (2) on the left and right sides of the axle (1) through the axle (1).
The rubber tire bogie according to claim 9, characterized in that it further comprises a secondary suspension device (8) located between the connection bolster (5) and the frame (4); the secondary suspension device (8) It includes two secondary springs (801), two transverse shock absorbers (802) and four vertical shock absorbers (803) located between the connecting bolster (5) and the frame (4); the two The secondary springs (801) are arranged symmetrically along the center line of the frame (4); the four vertical dampers (803) are located between the two secondary springs (801) and are arranged symmetrically in the center; The transverse shock absorber (802) is arranged obliquely and symmetrically between the frame (4) and the connecting bolster (5).