CN112455243B

CN112455243B - Trolley bus running system and trolley bus

Info

Publication number: CN112455243B
Application number: CN201910855384.8A
Authority: CN
Inventors: 李辰生; 代瑞珍; 姚建军; 刘春洋; 郝涛广
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2022-07-26
Anticipated expiration: 2039-09-09
Also published as: CN112455243A; WO2021047018A1

Abstract

The embodiment of the application provides a trolley bus running system and a trolley bus, wherein the running system is used for being connected with a vehicle body connecting frame arranged between two carriages in a vehicle; the walking system comprises two groups of walking components, and the two groups of walking components are symmetrically arranged at the two transverse sides of the vehicle body connecting frame; the transverse direction is a direction perpendicular to the vehicle traveling direction; the running assembly comprises: an axle box; an upper yoke connected between the top of the axle box and a vehicle body connection frame; a lower yoke connected between the bottom of the axle box and a vehicle body connection frame; wheels rotatably coupled to the axle housings. The trolley bus running system can reduce the floor height of the carriage and is beneficial to reducing the gravity center of the carriage.

Description

Trolley bus running system and trolley bus

Technical Field

The application relates to a trolley bus running technology, in particular to a trolley bus running system and a trolley bus.

Background

With the annual increase of the quantity of automobiles in each big city, the phenomenon of traffic jam becomes more and more serious, so that the people can travel by using public transport means as a preferred travel mode advocated by people. A public transportation vehicle includes: the system comprises a subway, a light rail, a bus, a trolley bus and the like, wherein the trolley bus is already put into application in many cities due to the advantages of environmental protection, no emission, large passenger capacity, easy infrastructure construction, low construction cost and the like.

The trolley bus mainly includes: the running system is used for realizing running and steering functions. The walking system is usually arranged below the carriage, and the traditional walking system has a complex structure and is high in height, so that the height of the floor of the carriage is raised, the gravity center of the carriage is high, and the stability is poor. In addition, the trolley bus comprises at least two carriages, and the trolley bus has more curves and smaller turning radius in the process of running on an urban road, so that the traction and buffer structures among the carriages determine the performance of the trolley bus in the turning process, and the current common trolley buses have the problems of poor stability, large vibration and the like in the turning process.

Disclosure of Invention

In order to solve one of the technical defects, the embodiment of the application provides a trolley bus running system and a trolley bus.

The embodiment of the first aspect of the application provides a trolley bus running system, wherein the running system is used for being connected with a vehicle body connecting frame arranged between two carriages in a vehicle; the walking system comprises two groups of walking components, and the two groups of walking components are symmetrically arranged at the two transverse sides of the vehicle body connecting frame; the transverse direction is a direction perpendicular to the direction of travel of the vehicle;

the running assembly comprises:

an axle box;

an upper yoke connected between the top of the axle box and a vehicle body connection frame;

a lower yoke connected between the bottom of the axle box and a vehicle body connection frame;

wheels rotatably coupled to the axle housings.

An embodiment of a second aspect of the present application provides a trolley bus, including: a running system as described above.

According to the technical scheme, the two walking assemblies are symmetrically arranged on the two transverse sides of the vehicle body connecting frame instead of the two walking assemblies arranged below the carriage, the carriage below the two ends of the vehicle body connecting frame is not required to be provided with the walking assemblies, the height of the floor of the carriage can be reduced, the effect of reducing the gravity center of the carriage is achieved, the stability in the driving process is improved, and particularly the stability in the turning process is improved. Each walking assembly comprises an axle box and wheels which are rotationally connected with the axle box, the axle box is connected with the vehicle body connecting frame through an upper fork arm and a lower fork arm, the upper fork arm and the lower fork arm are respectively connected with the axle box and the vehicle body connecting frame at an upper position and a lower position, and acting force is transmitted between the upper fork arm and the lower fork arm, so that the upper part and the lower part of the axle box are stressed uniformly. And the independent upper fork arm and the independent lower fork arm are adopted to connect the axle box and the vehicle body connecting frame, so that the flexibility of the carriage in the turning process can be improved, and the vehicle can adapt to a route with a smaller turning radius.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a trolley bus according to a first embodiment of the present application;

FIG. 2 is a perspective view of a running system coupled to a vehicle body attachment frame according to one embodiment of the present disclosure;

FIG. 3 is a side view of a running system coupled to a body attachment frame according to one embodiment of the present disclosure;

FIG. 4 is a schematic structural view of an upper yoke of the running system according to the second embodiment of the present application;

FIG. 5 is a schematic structural view of the upper yoke body in the upper yoke shown in FIG. 4;

FIG. 6 is a schematic view of the structure of the rubber node in the upper yoke shown in FIG. 4;

FIG. 7 is a schematic structural view of a lower yoke of a running system according to a second embodiment of the present application;

FIG. 8 is a schematic structural diagram of an axle box in a running system according to a third embodiment of the present application;

FIG. 9 is an exploded view of the axle housing of FIG. 8 assembled with the upper and lower yoke;

FIG. 10 is an exploded view of a brake device in the running system according to the fourth embodiment of the present application;

FIG. 11 is a schematic structural diagram of a traction motor connected to a brake disc in a running system according to a fourth embodiment of the present application;

FIG. 12 is an exploded view of a traction motor coupled to a wheel of a travel system according to a fourth embodiment of the present application;

FIG. 13 is a schematic view of a traction motor coupled to a wheel of a travel system in accordance with a fourth embodiment of the present application;

FIG. 14 is an exploded view of the traction motor, axle box and brake disc connected in the running system provided in the fourth embodiment of the present application;

FIG. 15 is a schematic illustration of the axle housing of FIG. 8 assembled with an air spring and vertical shock absorber.

Reference numerals:

11-a compartment; 12-a vehicle body attachment frame; 13-a running system;

2-axle boxes; 21-air spring mounting; 211-air spring mounting holes; 22-a vertical shock absorber mounting section; 221-vertical shock absorber mounting holes; 23-upper yoke mount; 231-upper yoke mounting holes; 24-a lower yoke mount; 241-lower yoke mounting holes; 25-a brake mount; 251-brake mounting holes; 26-motor punching; 27-motor mounting holes; 28-motor wire perforation; 29-anti-roll device mounting holes; 210-a riser; 211-coaming; 212-rib plate;

3-a traction motor; 31-a motor body; 32-a motor housing; 33-a motor connection shaft; 34-a shaft connecting piece; 35-a connection terminal;

4-a wheel;

51-upper yoke; 51 a-upper yoke body; 511-upper yoke main lever; 512-upper yoke struts; 513-an upper yoke connection; 514-upper yoke connection hole; 52-lower yoke; 521-lower yoke main lever; 522-lower yoke link; 53-rubber node; 531-buffer; 532-a connecting part; 533-connecting hole;

61-air spring; 62-vertical shock absorbers;

7-a braking device; 71-a brake mount; 72-brake caliper; 73-a brake disc; 74-brake reservoir;

81-anti-roll torsion bar; 82-anti-roll link arm.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

The present embodiment provides a running system that can be applied to a trolley bus.

Fig. 1 is a schematic structural diagram of a trolley bus according to a first embodiment of the present application. As shown in fig. 1, the present embodiment provides a trolley bus including at least two cars 11, and two adjacent cars 11 are connected by a car body connecting frame 12. The trolley bus that this embodiment provided still includes: and a running system 13 connected with the vehicle body connecting frame 12 and used for supporting the vehicle body connecting frame 12.

In the present embodiment, the traveling direction of the trolley bus is referred to as a longitudinal direction, a direction perpendicular to the traveling direction is referred to as a lateral direction, and a vertical direction is referred to as a vertical direction.

In this embodiment, the running system 13 is connected to the vehicle body connecting frame 12, and can support the vehicle body connecting frame 12. The running system 13 comprises two groups of running components which are symmetrically arranged at the two transverse sides of the vehicle body connecting frame 12.

The two sets of running system components have the same structure, and the specific structure of one set of running system components is taken as an example for detailed description.

FIG. 2 is a perspective view of a running system provided in accordance with a first embodiment of the present invention attached to a vehicle body attachment frame, and FIG. 3 is a side view of a running system provided in accordance with a first embodiment of the present invention attached to a vehicle body attachment frame. As shown in fig. 2 and 3, the running system assembly comprises: an axle housing 2, an upper yoke 51, a lower yoke 52, and wheels 4. Wherein the wheels 4 are rotatably connected to the axle boxes 2 such that the wheels 4 are rotatable relative to the axle boxes 2. Specifically, the wheels 4 may be directly connected to the axle boxes 2 through bearings, or the wheels 4 may be connected to the axle boxes 2 through other members, so that the wheels 4 can rotate relative to the axle boxes 2.

The axle box 2 is connected to the vehicle body connecting frame 12 through an upper yoke 51 and a lower yoke 52, specifically, one end of the upper yoke 51 is connected to the top of the axle box 2, and the other end is connected to the vehicle body connecting frame 12; the lower yoke 52 has one end connected to the bottom of the axle box 2 and the other end connected to the vehicle body connecting frame 12.

The upper yoke 51 and the lower yoke 52 function to connect the axle box 2 and the vehicle body connection frame 12, and also transfer an acting force between the axle box 2 and the vehicle body connection frame 12, so that the upper and lower portions of the axle box 2 are uniformly stressed.

According to the technical scheme, the two walking assemblies are symmetrically arranged on the two transverse sides of the car body connecting frame instead of the two walking assemblies arranged below the carriage, the walking assemblies do not need to be arranged below the carriage at the two ends of the car body connecting frame, the height of the floor of the carriage can be reduced, the effect of reducing the gravity center of the carriage is achieved, the stability in the driving process is improved, and particularly the stability in the turning process is improved. Each walking assembly comprises an axle box and wheels rotationally connected with the axle box, the axle box is connected with the vehicle body connecting frame through an upper fork arm and a lower fork arm, the upper fork arm and the lower fork arm are respectively connected with the axle box and the vehicle body connecting frame at an upper position and a lower position, and acting force is transmitted between the upper fork arm and the lower fork arm, so that the upper part and the lower part of the axle box are stressed uniformly. In addition, the independent upper fork arm and the independent lower fork arm are adopted to connect the axle box and the vehicle body connecting frame, so that the flexibility of the carriage in the turning process can be improved, and the carriage can adapt to a route with a smaller turning radius.

The body structure of the vehicle body attachment frame 12 is arranged in the lateral direction, and the area enclosed by the body structure forms a longitudinal passage. In the transverse direction, the vehicle body connecting frame 12 is in a shape that the upper part is wide and the lower part is narrow, and the two groups of walking assemblies are respectively arranged at the two transverse sides of the lower part of the vehicle body connecting frame 12, so that the axle box, the upper fork arm and the lower fork arm are all positioned below the upper part of the vehicle body connecting frame 21, the installation space is saved, and the situation that the width of the axle box exceeds the width of a carriage is avoided.

Example two

The embodiment optimizes the walking system component on the basis of the technical scheme.

In order not to obscure the running gear, only half of the body connecting frame 12 is shown in fig. 2. In practice, the vehicle body attachment frame 12 is of a symmetrical construction. As shown in fig. 2 and 3, the axle box 2 is connected to the vehicle body connecting frame 12 via an upper yoke 51 and a lower yoke 52. The upper yoke 51 and the lower yoke 52 are used for connecting the axle box 2 and the vehicle body connecting frame 12, and are capable of transmitting an acting force therebetween and also capable of buffering the acting force therebetween.

For the upper yoke 51, the present embodiment provides a specific implementation manner:

fig. 4 is a schematic structural view of an upper yoke in a running system according to an embodiment of the present application, fig. 5 is a schematic structural view of an upper yoke main body in the upper yoke shown in fig. 4, and fig. 6 is a schematic structural view of a rubber node in the upper yoke shown in fig. 4.

As shown in fig. 4 to 6, the upper yoke 51 includes: an upper yoke body 51a and a rubber node 53. The upper yoke main body 51a has upper yoke connecting portions 513 at both ends thereof. A rubber node 53 is provided on the upper yoke connecting portion 513, and the rubber node 53 is used for connection with the vehicle body connecting frame 12 or the axle box 2.

Specifically, the upper yoke main body 51a includes: an upper yoke main lever 511 and an upper yoke strut 512, wherein the upper yoke main lever 511 extends in the longitudinal direction. The number of the upper yoke struts 512 is two, and the two upper yoke struts are respectively connected to two ends of the upper yoke main rod 511. The upper yoke struts 512 extend in the transverse direction, and the middle part thereof is connected with the upper yoke main rod 511, which is equivalent to that the two upper yoke struts 512 are connected with the upper yoke main rod 511 to form an approximate I-shaped structure.

Further, the upper arm main lever 511 is formed in a curved bar shape, and the middle portion thereof is arched in the direction of the vehicle body connecting frame 12, so that the strength thereof can be improved.

An upper yoke connecting portion 513 is provided at each of both ends of each upper yoke strut 512, the upper yoke connecting portion 513 is provided with an upper yoke connecting hole 514 whose center line extends in the longitudinal direction, the rubber node 53 is provided in the upper yoke connecting hole 514, and both ends of the rubber node 53 extend out of the upper yoke connecting hole 514 for connection with the vehicle body connecting frame 12 or the axle box 2. As shown in fig. 6, the rubber node 53 includes: a buffer portion 531 and connection portions 532 positioned at both ends of the buffer portion 531. The connecting portion 532 is made of metal, a buffer portion 531 is formed between the middle portion of the connecting portion 532 and rubber through a vulcanization process, and the buffer portion 531 is arranged in the upper yoke connecting hole 514. The connection portion 532 extends out of the upper yoke connection hole 514 and is provided with a connection hole 533 for connection with the axle box 2 or the vehicle body connection frame 12 by a bolt.

The upper yoke arm 512 extends in the lateral direction, and has one end connected to the axle box 2 via a rubber joint 53 and the other end connected to the vehicle body connecting frame 12 via a rubber joint 53.

The rubber node 53 has a certain rigidity, a capacity of connecting to the axle box 2 or the vehicle body connecting frame 12, and a certain buffering capacity to buffer an acting force before the axle box 2 and the vehicle body connecting frame 12.

For the lower yoke 52, this embodiment provides a specific connection:

fig. 7 is a schematic structural view of a lower yoke in a running system according to a second embodiment of the present application. As shown in fig. 2 and 7, the lower yoke 52 is two in number, and is disposed side by side and symmetrically connected between the axle box 2 and the vehicle body connecting frame 12. The lower yoke 52 specifically includes: a lower yoke stem 521 and a rubber node 53. The lower arm main rod 521 extends along a transverse direction, and two ends of the lower arm main rod are respectively provided with a lower arm connecting portion 522. The rubber node 53 is provided on the lower yoke connecting portion 522 for connection with the axle box 2 or the vehicle body connecting frame 12.

Specifically, the lower arm main lever 521 has a curved shape, for example, an "S" shape with a small curvature, and the strength thereof can be improved. The lower yoke main rod 521 is provided at both ends thereof with lower yoke coupling portions 522, respectively, the lower yoke coupling portions 522 are provided with lower yoke coupling holes having a center line extending in a longitudinal direction, the rubber node 53 may be disposed in the lower yoke coupling holes, and both ends of the rubber node 53 extend out of the lower yoke coupling holes for coupling with the axle box 2 or the vehicle body coupling frame 12.

The rubber node 53 can be realized by referring to the structure shown in fig. 6, and the connection to the lower yoke connecting portion 522 can be realized by referring to the connection to the upper yoke connecting portion 513.

The upper yoke 51 and the lower yoke 52 function as a connecting member for connecting the axle box 2 and the vehicle body connecting frame 12 above and below the axle box 2, respectively, and are capable of transmitting a traction force and a braking force between the axle box 2 and the vehicle body connecting frame 12. Furthermore, the rubber node 53 provided in the upper yoke 51 and the lower yoke 52 can also buffer the force acting between the axle box 2 and the vehicle body connecting frame 12, thereby avoiding the structural damage and deformation caused by the excessive rigid force between the two.

The implementation of the upper yoke 51 and the lower yoke 52 is not limited to the above-mentioned embodiment, and other implementations may be adopted. For example: the upper yoke 51 may also be used in the same manner as the lower yoke 52, namely: two separate upper yokes of the same structure as the lower yoke 52 are used and are connected between the axle boxes 2 and the vehicle body connecting frame 12, respectively.

In addition to the solution provided in the present embodiment, the upper yoke 51 and the lower yoke 52 having other structures may be connected between the axle box 2 and the vehicle body connecting frame 12.

EXAMPLE III

On the basis of the above-mentioned embodiments, the present embodiment provides further optimization of the running gear assembly, in particular the structure of the axle box 2.

Fig. 8 is a schematic structural view of an axle box in a running system according to a third embodiment of the present invention, and fig. 9 is an exploded view of the axle box shown in fig. 8 assembled with an upper yoke and a lower yoke. As shown in fig. 8 and 9, the top of the axle box 2 is provided with an upper yoke mounting 23 for connection to the upper yoke 51. The number of the upper yoke mounts 23 is two, and the upper yoke mounts are symmetrically disposed on both sides of the axle box 2. The upper yoke mounting base 23 is an upwardly open "U" shaped structure that receives the upper yoke connecting portion 513 of the upper yoke 51 therebetween. The two ends of the upper yoke mounting base 23 of the "U" shaped structure are provided with upper yoke mounting holes 231, which are connected with rubber nodes 53 arranged on the upper yoke connecting part 513 through bolts.

The bottom of the axle housing 2 is provided with a lower yoke mounting 24 for connection to a lower yoke 52. The lower yoke mounts 24 are two in number and are symmetrically disposed on both sides of the axle box 2. The lower yoke mounting block 24 is a downwardly opening "U" shaped structure that receives the lower yoke coupling 522 in the lower yoke 52. The two ends of the lower yoke mounting seat 24 of the U-shaped structure are provided with lower yoke mounting holes 241, and are connected with the rubber node 53 arranged on the lower yoke connecting part 522 through bolts.

The axle housing 2 may be a plate-shaped structure extending in a vertical direction, and the plate-shaped structure may be provided with some structures such as reinforcing ribs protruding from the surface of the plate-shaped structure, so as to improve the strength of the axle housing 2. The upper yoke mounting 23 and the lower yoke mounting 24 are provided at the top and bottom of the axle box 2, respectively.

Example four

The embodiment is based on the above embodiment, and further optimizes the running system.

The running system may also comprise a traction motor arranged on the axle housing 2 for driving the wheels 4 in rotation.

The traction motor may take on implementations common in the art, such as: the rotation output shaft of the traction motor is connected with the wheel hub of the wheel so as to drive the wheel to rotate.

For the traction motor, the embodiment provides another implementation manner: the traction motor adopts a structure with a built-in stator and an external rotor, and the wheel 4 is sleeved outside the traction motor, is connected with the rotor and synchronously rotates with the rotor. The traction motor serves as a hub in the wheel 4, on one hand, rigid support is provided for the wheel 4, on the other hand, the wheel 4 is directly driven to rotate, normal implementation of a traction function can be guaranteed, installation space can be saved, the size of a walking system is favorably reduced, and the design and assembly difficulty of other parts is simplified.

When the traction motor rotates forwards, the traction motor transmits torque to the wheels, the wheels are driven by friction force between the wheels and the ground to move forwards while rotating, and traction force is transmitted to the vehicle body connecting frame 12 through the traction motor and the axle box 2 in sequence.

Further, as shown in fig. 2, a braking device 7 is further provided on the axle box for suppressing the rotation of the wheel in a braking state, thereby achieving a braking effect.

For the above braking device 7, the present embodiment provides a specific implementation manner:

FIG. 10 is an exploded view of a brake device in a running system according to a fourth embodiment of the present invention. As shown in fig. 10, the present embodiment provides a braking device 7 including: a brake disc 73 and a brake caliper 72. Wherein the brake disc 73 is connected to and rotates synchronously with the rotor in the traction motor. The brake caliper 72 is provided on the axle housing 2 for clamping the brake disc 73 for braking in a braking state.

To explain the connection method between the traction motor and the brake disk 73, first, a specific configuration of the traction motor will be described. Fig. 11 is a schematic structural diagram of a traction motor and a brake disc in a running system provided in the fourth embodiment of the present application. As shown in fig. 11, the traction motor 3 includes: the motor comprises a motor body 31, a stator, a rotor and a motor shell 32, wherein the stator is arranged on the motor body 31, and the rotor surrounds the outer ring of the stator and can rotate relative to the motor body 31. The motor housing 32 is fitted around the outside of the rotor, and is connected to the rotor to rotate together with the rotor with respect to the motor main body 31. The motor main body 31 is fixedly connected to the axle housing 2. Only the motor body 31 and the motor housing 32 can be seen in fig. 11.

Fig. 12 is an exploded view of a traction motor connected to a wheel in a running system according to a fourth embodiment of the present disclosure, fig. 13 is a schematic structural view of a traction motor connected to a wheel in a running system according to a fourth embodiment of the present disclosure, and fig. 14 is an exploded view of a traction motor, an axle box, and a brake disc connected to a running system according to a fourth embodiment of the present disclosure. As shown in fig. 12 and 13, the wheel 4 is sleeved outside the motor housing 32, and a hub in the wheel 4 is connected to the motor housing 32, where the hub can be understood as an inner ring structure of a tire in the wheel 4, and the hub is a rigid structure.

The traction motor 3 is located outside the axle box 2, wherein one end of the motor housing 32 facing the axle box 2 is connected with a motor connecting shaft 33 extending in a transverse direction. As shown in fig. 14, the motor connecting shaft 33 passes through the motor through hole 26 formed in the axle housing 2 and is connected to a brake disc 73 located inside the axle housing 2. Specifically, the connecting shaft element 34 is positioned on the inner side of the brake disc 73, a part of the connecting shaft element 34 can pass through the center hole of the brake disc 73 to be connected with the motor connecting shaft 33, and the connecting shaft element 34 is further connected with the brake disc 73 through a bolt, so that the motor connecting shaft 33, the connecting shaft element 34 and the brake disc 73 are connected together and rotate synchronously.

The axle housing 2 is provided with a motor mounting hole 27 for connection to the traction motor 3. The number of the motor mounting holes 27 is plural, and the motor mounting holes are arranged at the periphery of the motor through hole 26. The connection terminals 35 provided at the inner end of the motor main body 31 are respectively passed through the corresponding motor mounting holes 27 and then fixedly connected to the axle boxes 2 by bolts.

On the basis of the technical scheme, the embodiment provides an installation mode of the brake clamp:

a brake mounting member 71, as shown in fig. 10 and 14, is connected to the axle housing 2 and forms a space for accommodating a brake disc 73 with the axle housing 2. The brake caliper 72 is mounted on the brake mounting member 71, and the brake caliper 71 extends to both sides of the brake disc 73 to clamp the brake disc 73 in a braking state. Specifically, the brake mounting member 71 is a long plate-shaped structure perpendicular to the lateral direction, and both ends thereof are connected to the brake mounting seats 25 protrudingly provided on both sides of the axle box 2, respectively. The brake disk 73 is located in a space surrounded by the axle box 2, the brake mounting 25, and the brake mounting member 71.

In this embodiment, a brake reservoir 74 is used to provide the driving force for the brake caliper 72, the brake reservoir 74 being fixed to the brake mounting member 71 on the inner side of the axle housing 2.

As shown in fig. 8 and 14, the axle housing 2 is provided at a middle portion thereof with a motor through-hole 26 through which a motor connecting shaft 33 passes. The periphery of the motor through hole 26 is provided with a circle of a plurality of motor mounting holes 27 for the connection terminals 35 arranged at the end of the traction motor 3 to pass through and be fixedly connected through bolts. Above the motor mounting hole 27 located above, a motor wire through hole 28 is provided through which a motor connection terminal passes and is connected to a cable.

The center of the motor through hole 26 is also the center of the traction motor 3 and the brake disc 73, and a surrounding plate is arranged at the periphery of the motor through hole 26 to enclose a space for accommodating the brake disc 73. Specifically, the axle housing 2 includes: the vertical plate 210 that extends along the vertical direction and the bounding wall 211 that protrudes in the riser 210 medial surface, bounding wall 211 is semicircle ring-shaped, is perpendicular with riser 210. The riser 210 and the apron 211 enclose a space for accommodating the brake disc 73. A plurality of rib plates 212 are connected between the risers 210 and the apron 211, and the strength of the axle box 2 can be improved. The brake disc 73 is surrounded by the vertical plate 210 and the coaming 211, so that the brake disc 73 can be protected on one hand, and the influence on the braking effect caused by the attachment of impurities on the brake disc is avoided; on the other hand, the strength of the axle box 2 can be improved.

The inner side surface of the vertical plate 210 is provided with two brake installation seats 25 connected with the brake installation piece 71, and the two brake installation seats 25 are distributed on two sides of the vertical plate 210. The riser 210, shroud 211 and brake mounting 25 may be integrally formed. The brake installation seats 25 extend in a direction perpendicular to the risers 210, and ends thereof are provided with brake installation holes 251 for coupling with the brake installation members 71 by means of bolts.

The brake caliper 72 and the brake reservoir 74 may be of any construction commonly used in the art, and the connection manner may be directly or adaptively modified based on the above-mentioned manner.

In addition to the above, the braking device 7 can also adopt other ways, such as: and (3) changing a braking source: braking in a hydraulic braking mode; changing the installation mode of the braking device: adjusting the structure of the brake mounting member and the connection mode with the axle box.

EXAMPLE five

The embodiment is based on the above embodiment, and further optimizes the running component.

As shown in fig. 2 and 3, the running assembly further comprises: and a suspension device connected between the axle box 2 and the vehicle body connecting frame 12. The suspension serves on the one hand to connect and position the axle housing 2 to the body connecting frame 12 and on the other hand to dampen forces between the two.

The suspension device may specifically include: and an air spring 61 provided at the top end of the axle box 2. Specifically, the bottom end of the air spring 61 is connected to the top end of the axle box 2, and the top end of the air spring 61 is connected to the vehicle body attachment frame 12. The air spring 61 may be of a structure commonly used in the art, and the structure of the axle box 2 may be adaptively adjusted according to the air spring 61 of different structures, and is not limited to the structure provided in the present embodiment. The buffer energy of the air spring 61 is adjusted according to the load of the carriage, so that the air spring adapts to the load of the vehicle body, the vehicle body is reasonably buffered, and the vibration amplitude of the carriage is reduced.

Further, the suspension device may further include: and a vertical damper 62 connected between the top end of the axle box 2 and the vehicle body connecting frame 12. Specifically, the bottom end of the vertical damper 62 is connected to the axle box 2 by a bolt, and the top end thereof is connected to the vehicle body connecting frame 12 by a bolt. The vertical damper 62 extends in the vertical direction, and is used for buffering the vertical force between the car body connecting frame 12 and the axle box 2, so as to reduce the vibration amplitude of the carriage.

FIG. 15 is a schematic illustration of the axle housing of FIG. 8 assembled with an air spring and vertical shock absorber. As shown in fig. 8 and 15, the top of the axle box 2 is provided with an air spring mounting portion 21 for connecting with the air spring 61, the top of the air spring mounting portion 21 is a horizontal mounting surface, and an air spring mounting hole 211 with a central line extending along the vertical direction is opened on the top for connecting with the bottom of the air spring 61 through a bolt.

The top of axle box 2 still is equipped with the vertical shock absorber installation department 22 that is used for linking to each other with vertical shock absorber 62, and vertical shock absorber installation department 22 is equipped with the vertical shock absorber mounting hole 221 that the central line extends along longitudinal direction, links to each other with the bottom of vertical shock absorber 62 through the bolt.

The vertical damper 62 may be of a construction commonly used in the art, and the construction of the axle box 2 may be adapted according to the specific construction of the selected vertical damper 62, and is not limited to the embodiment provided.

EXAMPLE six

On the basis of the above technical solution, as shown in fig. 2, an anti-roll device extending along the transverse direction is further adopted and respectively connected with the vehicle body connecting frame 12 and the axle boxes 2 located at both sides of the vehicle body connecting frame 12, so as to avoid the carriage from rolling over due to a large height difference between the traveling assemblies at both sides.

The embodiment provides an implementation manner of an anti-roll device: as shown in fig. 2, the anti-roll apparatus includes: an anti-roll torsion bar 81 and an anti-roll link arm 82. The anti-roll torsion bar 81 extends in the lateral direction, and both ends thereof extend to the vicinity of the axle boxes 2 on both sides, respectively. The anti-roll connecting arms 82 are two in number and symmetrically connected to both ends of the anti-roll torsion bar 81.

Specifically, the anti-roll torsion bar 81 has a straight rod-like middle portion, and two ends bent and extended toward the axle box 2. The anti-roll link arm 82 extends in the vertical direction, and has a bottom end bolted to the end of the anti-roll torsion bar 81 and a top end bolted to the axle box 2.

The anti-roll connecting arm 82 may be a straight rod or a steel spring structure having a certain amount of expansion in the vertical direction to buffer the vertical force between the axle box 2 and the anti-roll torsion bar 81.

Further, the upper portion of the axle box 2 is provided with an anti-roll device mounting hole 29 having a center line extending in the lateral direction, and is located below the upper yoke mounting base 23. Bolts are used to connect to the top ends of the anti-roll connecting arms 82 through the anti-roll device mounting holes 29.

The implementation manner of the anti-roll device is only an example, and other manners besides the above manners may be adopted, and the embodiment will not be described in detail.

The axle box 2 described above is of an integrally molded structure, and the shape and layout of the parts are not limited to the above-described embodiments, and other embodiments may be employed. The above-described construction of the axle box provides the coupling interfaces for the respective components so that the components are integrated on the axle box. The axle box adopts a structure of the vertical plate and the coaming, and the brake disc is encircled in the axle box, so that the brake disc can be protected, and the situation that sundries are attached to the brake disc to influence the braking effect is avoided; on the other hand, the strength of the axle box can be improved.

Any of the embodiments described above provides a running system that can be manufactured, sold, etc. as a single product, and that can be applied directly to body attachment frames of various configurations, or that can be adapted to the configuration of the body attachment frame.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A trolley bus running system is characterized in that the running system is connected with a vehicle body connecting frame arranged between two carriages in a vehicle; the walking system comprises two groups of walking components, and the two groups of walking components are symmetrically arranged at the two transverse sides of the vehicle body connecting frame; the transverse direction is a direction perpendicular to the direction of travel of the vehicle;

the running assembly comprises:

an axle box;

wheels rotatably connected to the axle boxes;

the upper part of the axle box is provided with an upper fork arm mounting seat which is used for being connected with an upper fork arm; the number of the upper fork arm mounting seats is two, and the upper fork arm mounting seats are symmetrically arranged on two sides of the axle box; the upper fork arm mounting seat is of a U-shaped structure with an upward opening, and two ends of the upper fork arm mounting seat are provided with upper fork arm mounting holes used for being connected with the upper fork arm;

the upper yoke comprises:

the upper fork arm comprises an upper fork arm main body, wherein two ends of the upper fork arm main body are respectively provided with an upper fork arm connecting part;

and the rubber node can be arranged on the upper fork arm connecting part and is used for being connected with an upper fork arm mounting seat of the vehicle body connecting frame or the axle box.

2. The running system of claim 1, wherein the upper yoke body comprises:

an upper yoke main rod extending in a longitudinal direction;

the middle part of the upper fork arm supporting rod is connected with the end part of the upper fork arm main rod; two ends of the upper fork arm main rod are respectively connected with an upper fork arm supporting rod; and the two ends of the upper fork arm supporting rod are respectively provided with the upper fork arm connecting part.

3. The running system of claim 2, wherein the upper yoke connecting portion is provided with an upper yoke connecting hole having a center line extending in the longitudinal direction;

the rubber node is arranged in the upper fork arm connecting hole; and two ends of the rubber node extend out of the upper fork arm connecting hole and are used for being connected with a vehicle body connecting frame or an axle box.

4. The running system of claim 3, wherein the upper boom main bar is a bent bar shape in which a middle portion thereof is arched in a direction toward the vehicle body attachment frame.

5. The running system of claim 1, wherein the lower wishbone is two in number and is symmetrically attached to the axle housing.

6. The running system of claim 5, wherein the lower yoke comprises:

the lower fork arm main rod extends along the transverse direction; the two ends of the lower fork arm main rod are respectively provided with a lower fork arm connecting part;

a rubber node may be provided on the lower yoke connecting portion for connection with a vehicle body connection frame or an axle box.

7. The running system of claim 6, wherein the lower yoke connecting portion is provided with a lower yoke connecting hole having a center line extending in a longitudinal direction;

the rubber node is arranged in the lower fork arm connecting hole; and two ends of the rubber node extend out of the lower fork arm connecting hole and are used for being connected with a vehicle body connecting frame or an axle box.

8. The running system of claim 3 or 7, wherein the rubber node comprises: the buffer part and the connecting parts are positioned at two ends of the buffer part; the buffer part is accommodated in the upper yoke connecting hole or the lower yoke connecting hole, and the connecting part extends out of the upper yoke connecting hole or the lower yoke connecting hole to be connected with the axle box or the vehicle body connecting frame.

9. The running system of claim 8, wherein the connecting portion is made of metal, and the middle portion of the connecting portion and the rubber form the buffer portion through a vulcanization process.

10. The running system of claim 1, further comprising:

and a braking device provided on the axle box for suppressing the rotation of the wheel in a braking state.

11. The running system of claim 1, further comprising:

a traction motor connected to the axle box; the traction motor is also connected with the wheels and used for driving the wheels to rotate.

12. Running system according to claim 1, 5, 6 or 7, wherein the axle housing is provided at its lower part with a lower yoke mounting for connection to a lower yoke; the number of the lower fork arm installation seats is two, and the lower fork arm installation seats are symmetrically arranged on two sides of the axle box.

13. The running system of claim 12, wherein the lower wishbone mounting is a downwardly opening "U" shaped structure having lower wishbone mounting holes at each end for attachment to the lower wishbone.

14. A trolley bus, characterized in that it comprises: running system according to any one of claims 1 to 13.