CN114056367B

CN114056367B - Inside suspension direct-drive radial bogie and truck

Info

Publication number: CN114056367B
Application number: CN202010770745.1A
Authority: CN
Inventors: 杨文朋; 曲兆菲; 翟凤宇; 罗林涛; 翟鹏军; 刘寅华
Original assignee: CRRC Shandong Co Ltd
Current assignee: CRRC Shandong Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2023-06-27
Anticipated expiration: 2040-08-04
Also published as: WO2022027855A1; CN114056367A

Abstract

The invention provides an inner side suspension direct-drive radial bogie and a truck, which comprise an axle box device, a framework main body and at least one suspension vibration damper device; one end of the suspension vibration damper is connected with the wheel pair axle box device, the other end of the suspension vibration damper is connected with the bottom end of the framework main body, the framework main body and the suspension vibration damper are fixed on the inner side of the wheel pair axle box device, the framework main body comprises a cross beam and two side beams, and each side beam comprises an upper cover plate and a lower cover plate; the invention provides an inner side suspension direct-drive radial bogie, which solves the problems that the existing outer side suspension bogie can cause heavy weight of a vehicle body, increase energy consumption, influence the effective carrying capacity of the vehicle body and the structure, parameters and driving capacity of the existing inner side suspension bogie are not suitable for the performance and driving requirements of a truck.

Description

Inside suspension direct-drive radial bogie and truck

Technical Field

The invention relates to a railway vehicle bogie, in particular to an inner side suspension direct-drive radial bogie and a truck.

Background

Along with the development of economy and technology, low-carbon environment-friendly running, intelligent operation and maintenance management and information-based transportation service of a railway train are becoming urgent demands for improving competitiveness and ensuring market persistence, wherein a bogie is one of main components of the train and mainly comprises an axle box device, a framework, a vibration reduction system, a driving device, a basic braking device and the like, the load, the length and the volume of the train can be increased by arranging the bogie, the running speed of the train is improved, meanwhile, the functions of supporting the train body, bearing and transmitting various loads from the train body to the wheel set or from a wheel rail to the train body are achieved, axle weights are uniformly distributed, and in addition, the bogie is arranged to ensure safe running of the train and running along a straight line and smoothly passing through a curve line.

At present, the bogie generally adopts an outer side suspension structure, namely, a framework and a damping system are arranged outside the wheel pair axle box device.

However, when the bogie of the existing outside suspension structure is adopted, the width of the framework is set to be wider, so that the size of the whole vehicle structure is larger, meanwhile, the dead weight of the bogie is generally more than 4.5t, the light-weight space is insufficient, the weight of the bogie body is large, a part of traction force is used for the invalid weight of the transportation vehicle in the cargo transportation service process, the energy consumption is increased, and the effective carrying capacity is influenced.

Disclosure of Invention

The invention provides an inner side suspension direct-drive radial bogie and a truck, which aim to solve the problems that the existing outer side suspension bogie is adopted to cause heavy weight of the truck body, increase energy consumption and influence the effective carrying capacity of the truck body, and the structure, parameters and driving capacity of the existing inner side suspension bogie are not suitable for the performance and driving requirements of the truck.

The invention provides an inner side suspension direct-drive radial bogie and a truck, which comprise:

an axle box device, a framework main body and at least one suspension vibration damper;

one end of the suspension vibration damper is connected with the wheel pair axle box device, the other end of the suspension vibration damper is connected with the bottom end of the framework main body, the framework main body and the suspension vibration damper are fixed on the inner side of the wheel pair axle box device, and the top end of the framework main body is connected with the vehicle body;

the frame body includes: the beam is welded between the two side beams, and the side beams comprise an upper cover plate and a lower cover plate;

the upper cover plate is provided with a guide pillar towards one side of the lower cover plate, the guide pillar elastically positions the wheel set axle box device through an elastic node, a limiting hole is formed in the surface of the lower cover plate, the limiting hole is used for limiting the wheel set axle box device, and the limiting hole is close to two ends of the upper cover plate.

In a specific embodiment of the present invention, the wheelset box device includes: the brake disc and the motor are arranged in the middle of the axle, motor flanges are arranged on two sides of the motor, and the motor is used for providing driving force for the vehicle body; the motor is a split permanent magnet direct drive motor.

In a specific embodiment of the present invention, the wheelset box device further includes: axles, wheels, bearings, and axle boxes;

the wheel is positioned at the outermost end of the axle, the bearing is positioned at the inner side of the wheel, and the axle box is positioned between the bearing and the wheel;

a positioning ring is arranged between the wheel and the bearing and used for adjusting the inner space of the wheel, and a noise reduction ring is arranged on the wheel.

In the specific implementation mode of the invention, the axle box is provided with the mounting hole, the axle box is mounted on the bearing through the mounting hole, and the side of the axle box, which is positioned at the center of the bogie, is also provided with the shock absorber seat;

the axle box top is equipped with the node installation face, the axle box end is equipped with the vertical face towards the bogie center, vertical face is as the installation face of wheel pair adjusting device.

In the specific embodiment of the invention, the side beam adopts a concave structure, one side of the center of the cross beam is provided with a motor seat, and the other side of the center of the cross beam is provided with a brake hanging seat;

the side beam is characterized in that a side bearing seat is arranged on the outer side of the middle part of the side beam, a shock absorber seat is arranged on the inner side of the end part of the side beam, an elastic side bearing is arranged on the side bearing seat, a spherical center plate is arranged in the middle of the cross beam, and the elastic side bearing and the spherical center plate together form a vehicle interface.

In a specific embodiment of the present invention, the suspension vibration damping device includes: a spring set and an elastic node;

the spring sets are respectively arranged at two sides of the axle box, the elastic nodes are arranged at the top of the axle box, the spring sets comprise outer circle springs and inner circle springs, the height of the inner circle springs is larger than that of the outer circle springs, and low-friction bushings are arranged in the elastic nodes;

the suspension vibration damping device further includes: and one end of the hydraulic damper is connected with the framework main body, and the other end of the hydraulic damper is connected with the axle box.

In a specific embodiment of the present invention, the elastic node includes: the device comprises a base, two elastic bodies and two inner rings;

an inner cavity is formed in the base, the two inner rings are located at the center of the elastic node, and the two elastic bodies are located between the two inner rings and the inner cavity.

In a specific embodiment of the present invention, further comprising: the wheel set adjusting device is positioned below the framework main body;

the wheel adjusting device comprises a pull rod and a fastening piece, wherein the pull rod is respectively connected with the diagonal axle boxes and fastened through the fastening piece.

In a specific embodiment of the present invention, further comprising: the braking device is positioned in the middle of the framework main body;

the monitoring system comprises a vibration sensor, a load sensor, a temperature sensor and a speed sensor.

The invention also provides a truck, which at least comprises: the inside-suspended direct drive radial bogie of any of the above.

The invention provides an inside suspension direct-drive radial bogie and a truck, which comprise an axle box device, a frame main body and at least one suspension vibration damper, wherein one end of the suspension vibration damper is connected with the axle box device, the other end of the suspension vibration damper is connected with the bottom end of the frame main body, the frame main body and the suspension vibration damper are fixed on the inner side of the axle box device, the top end of the frame main body is connected with a truck body, and the frame main body comprises: the beam is welded between the two side beams, and the side beams comprise an upper cover plate and a lower cover plate; the upper cover plate is provided with a guide pillar towards one side of the lower cover plate, the surface of the lower cover plate is provided with a limiting hole, the guide pillar penetrates through the limiting hole and cooperates with an elastic node inner ring to elastically position the wheel pair axle box device, the limiting hole limits the wheel pair axle box device through an elastic node base, and the limiting hole is close to two ends of the upper cover plate.

Therefore, the invention provides the inner side suspension direct-drive radial bogie, which solves the problems that the existing outer side suspension bogie can cause heavy weight of the vehicle body, increase energy consumption, influence the effective carrying capacity of the vehicle body, and the structure, parameters and driving capacity of the existing inner side suspension bogie are not suitable for the performance and driving requirements of a truck.

Drawings

FIG. 1 is a schematic view of an inboard suspended direct drive radial bogie according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;

fig. 3 is a schematic structural diagram of an axle box device according to an embodiment of the present invention;

FIG. 4 is a schematic view of a partial structural cross-section of an axle box assembly provided by an embodiment of the present invention;

FIG. 5 is a schematic structural view of an axle housing according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a frame body according to an embodiment of the present invention;

FIG. 7 is a schematic view of an end of a side member of a frame provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic diagram of a suspension vibration reduction system and an underlying monitoring system provided by an embodiment of the present invention;

FIG. 9 is a longitudinal center cross-sectional view of a suspension vibration reduction system provided by an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an elastic node according to an embodiment of the present invention.

Reference numerals illustrate:

10-wheelset axle box device;

11-axle;

111-a central hole;

112-motor flange;

12-wheels;

121-a noise reduction ring;

13-bearing;

14-axle boxes;

141-mounting holes;

142-node mounting surface;

143-vertical plane;

15-positioning rings;

16-a brake disc;

17-an electric motor;

18-motor fixing means;

20-a frame body;

21-a cross beam;

211-a motor base;

212-braking a hanging seat;

213-spherical center plate;

22-side beams;

221-a side bearing;

222-resilient side bearings;

223-a shock absorber mount;

224-upper cover plate;

225-lower cover plate;

2251-limiting aperture;

226-guide posts;

30-suspension vibration damper;

31-spring set;

311-an outer circle spring;

312-inner round springs;

32-elastic nodes;

321-a base;

322-an elastomer;

323-inner ring;

324-low-mole bushing;

33-hydraulic shock absorbers;

34-spring seat;

40-wheel set adjusting device;

50-a braking device;

60-monitoring a system;

61-a vibration sensor;

62-a load cell;

63-a temperature sensor;

64-speed sensor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 1 is a schematic structural view of an inner side suspension direct-drive radial bogie according to an embodiment of the present invention, fig. 2 is a schematic structural view of A-A of fig. 1, fig. 3 is a schematic structural view of an axle box device according to an embodiment of the present invention, fig. 4 is a schematic partial structural view of an axle box device according to an embodiment of the present invention, fig. 5 is a schematic structural view of an axle box according to an embodiment of the present invention, fig. 6 is a schematic structural view of a frame main body according to an embodiment of the present invention, fig. 7 is a schematic structural view of an end portion of a frame side member according to an embodiment of the present invention, fig. 8 is a schematic structural view of a suspension vibration damping system and an under-layer monitoring system according to an embodiment of the present invention, fig. 9 is a longitudinal center cross-sectional view of a suspension vibration damping system according to an embodiment of the present invention, and fig. 10 is a schematic structural view of an elastic node according to an embodiment of the present invention.

At present, part of European railway carriages adopt a bogie with an inner side suspension structure, but structurally adopt special structures of carriages such as an air spring, a traction pull rod, a rotating arm positioning motor, an integral driving motor and the like, and the special structures have complex structure and large weight and cannot be used on railway trucks; in addition, some trucks enterprises put forward some trucks to adopt the bogie of inboard suspension structure, but its primary positioning structure mainly adopts elastic guide pillar location, adopts flat rubber or V type rubber main suspension, like this suspension system can't provide large deflection under the empty car condition, can not effectively promote dynamic performance to elastic guide pillar location can't provide sufficient wheel pair longitudinal and transverse displacement, lacks actuating system simultaneously, can't adapt to the demand of vehicle self-driving.

Therefore, the present embodiment provides an inside-suspended direct-drive radial bogie for supporting a vehicle body, bearing and transmitting various loads from the vehicle body to a wheel set or from a wheel rail to the vehicle body, so as to improve the stability of train operation.

Referring to fig. 1 and 2, in this embodiment, the inner suspension direct-drive radial bogie may include an axle box device 10, a frame body 20, and at least one suspension damper device 30, in this embodiment, the suspension damper device 30 is specifically described by taking setting 4 sets as an example, where one end of the suspension damper device 30 is connected to the axle box device 10, the other end of the suspension damper device 30 is connected to the bottom end of the frame body 20, and the top end of the frame body 20 is connected to the vehicle body.

In this embodiment, referring to fig. 1, the frame body 20 and the suspension damper 30 are fixed inside the wheel box device 10, so that the width of the frame body 20 can be reduced, the volume and the material consumption of the frame body 20 can be reduced, and the dead weight of the vehicle body can be reduced, thereby solving the problems that the existing outside suspension bogie can cause the dead weight of the vehicle body, increase the energy consumption and affect the effective carrying capacity of the vehicle body.

In the present embodiment, the wheelset box device 10 is specifically disposed at the outermost side of the bogie, and is connected to the bogie and the track, respectively, and in the present embodiment, two wheelset box devices 10 are specifically described as an example.

In this embodiment, the frame body 20 includes a cross beam 21 and two side beams 22 (see fig. 6 specifically), the cross beam 21 is welded between the two side beams 22, the side beams 22 include an upper cover plate 224 and a lower cover plate 225, wherein, the upper cover plate 224 is provided with a guide post 226 (see fig. 7 specifically) towards one side of the lower cover plate 225, the guide post 226 is used for connecting the elastic node 32, the surface of the lower cover plate 225 is provided with a limiting hole 2251, so that the guide post 226 passes through the limiting hole 2251, the guide post 226 elastically positions the axle box device 10 of the wheel set, the limiting hole 2251 can be used for limiting the horizontal displacement of the axle box device 10 of the wheel set, and the limiting hole 2251 is provided near two ends of the upper cover plate 224.

The inner side suspension direct-drive radial bogie provided by the embodiment comprises an axle box device 10, a frame main body 20 and at least one suspension vibration damper 30, wherein one end of the suspension vibration damper 30 is connected with the axle box device 10, the other end of the suspension vibration damper 30 is connected with the bottom end of the frame main body 20, the frame main body 20 and the suspension vibration damper 30 are fixed on the inner side of the axle box device 10, the top end of the frame main body 20 is connected with a vehicle body, the frame main body 20 comprises a cross beam 21 and two side beams 22, the cross beam 21 is welded between the two side beams 22, and the side beams 22 comprise an upper cover plate 224 and a lower cover plate 225; the upper cover plate 224 is equipped with the guide pillar 226 towards lower cover plate 225 one side, and lower cover plate 225 surface sets up spacing hole 2251, and guide pillar 226 carries out the elastic localization to wheel pair axle box device 10, and spacing hole 2251 carries out spacingly to wheel pair axle box device 10, and spacing hole 2251 is close to upper cover plate 224 both ends and sets up.

In this way, the width of the frame and the length of the axle shaft can be reduced by arranging the frame main body 20 and the suspension vibration damping device 30 inside the axle box device 10, the volume and the material consumption of the axle shaft 11 and the frame can be reduced, and the dead weight of the car body can be further reduced, so that the problem of heavy weight of the car body caused by over-wide frame is avoided, meanwhile, the surface of the lower cover plate 225 is provided with the limiting hole 2251, the guide pillar 226 passes through the limiting hole 2251, the guide pillar 226 elastically positions the axle box device 10, and the limiting hole 2251 can be used for limiting the horizontal displacement of the axle box device 10.

On the basis of the above embodiment, referring to fig. 3, the wheel-pair axle box device 10 may include a brake disc 16 and a motor 17, where the brake disc 16 and the motor 17 are installed in the middle of the axle 11, and the motor 17 is installed on a motor seat 211 (referring specifically to fig. 6) of the axle 11, and the brake disc 16 may be a conventional brake disc 16 and be installed on a brake disc seat of the axle 11.

In this embodiment, it should be noted that, the motor 17 may be an integral permanent magnet direct drive motor or a split permanent magnet direct drive motor, and in this embodiment, the split permanent magnet direct drive motor is specifically used as an example for explanation, so that when the motor is installed, the installation sequence of the motor can be freely selected, and other parts are not affected to be assembled, and the motor is easy to maintain.

In addition, referring to fig. 1, in order to fix the motor, a motor fixing device 18 may be further included, wherein both ends of the motor fixing device 18 are respectively connected to the wheel-set housing device 10 and the frame body 20.

On the basis of the above-described embodiment, referring to fig. 3, the wheel-axle box device 10 may further include an axle 11, wheels 12, bearings 13, and axle boxes 14, wherein the wheels 12 are located at the outermost ends of the axle 11, the bearings 13 are located inside the wheels 12, and the axle boxes 14 are located between the bearings 13 and the wheels 12.

In the present embodiment, by providing the wheels 12 at the outermost ends of the axles 11, not only the width of the frame and the length of the axles can be reduced, but also the wheels 12 can be made noise barriers, thereby achieving the effect of low noise of the bogie.

In the present embodiment, as shown in fig. 4, a positioning ring 15 may be further provided between the wheel 12 and the bearing 13, wherein the spacing between the inner sides of the wheel 12 may be adjusted by providing the positioning ring 15 between the wheel 12 and the bearing 13.

In this embodiment, referring to fig. 4, the axle 11 may also be a hollow shaft, where the diameter of the hollow shaft center hole 111 may be 65mm or more, specifically, the diameter of the hollow shaft center hole 111 may be 65mm or 70mm, and in this embodiment, by setting the axle 11 as a hollow shaft, the weight of the whole device may be reduced during operation of the vehicle body.

In this embodiment, referring to fig. 4, motor flanges 112 may be further disposed on two sides of the axle 11, and by disposing the motor flanges 112, a position fixing effect may be achieved on the motor 17, and in addition, a noise reduction ring 121 may be mounted on the wheel 12, so that the wheel 12 becomes a noise reduction wheel 12, thereby reducing noise when the vehicle body runs, and reducing the problem of trouble to residents along the railway.

On the basis of the above embodiment, as shown in fig. 5, the axle box 14 is provided with a mounting hole 141, wherein the mounting hole 141 is specifically oblong, two sides of the top of the mounting hole 141 are provided with fixing flanges, and the axle box 14 can be located on the outer ring of the bearing 13 through the top of the mounting hole 141.

In this embodiment, the top of the axle housing 14 is provided with a node mounting surface 142, wherein the node mounting surface 142 is connected to the elastic node 32, the end of the axle housing 14 is provided with a vertical surface 143 facing the center of the bogie, wherein the vertical surface 143 serves as a mounting surface for the wheel set adjusting device, and in addition, the side of the axle housing 14 located at the center of the bogie is further provided with a damper seat 223.

On the basis of the above-described embodiment, referring to fig. 6, the frame body 20 includes a cross member 21 and two side members 22, the cross member 21 being welded between the two side members 22 to form an H-shaped structure, so that the rigidity of the bogie can be enhanced and the running stability of the train can be improved by integrally welding the cross member 21 and the side members 22, wherein the side members 22 adopt a center-down structure, so that the center of gravity of the vehicle body can be lowered during running.

In this embodiment, a motor base 211 is disposed at one side of the center of the cross beam 21, a brake hanging base 212 is disposed at the other side, a side bearing base 221 is disposed at the outer side of the middle of the side beam 22, a damper base 223 is disposed at the inner side of the end of the side beam 22, an elastic side bearing 222 is mounted on the side bearing base 221, a spherical center plate 213 is disposed at the middle of the cross beam 21, and the elastic side bearing 222 and the spherical center plate 213 together form a vehicle interface, so that the universality of the existing vehicle can be satisfied.

On the basis of the above-described embodiment, referring to fig. 8 and 9, the suspension damper device 30 includes spring groups 31 and elastic nodes 32, wherein the spring groups 31 are respectively installed at both sides of the axle housing 14, and the elastic nodes 32 are installed at the top of the axle housing 14.

In this embodiment, the spring set 31 includes an outer spring 311 and an inner spring 312, and the height of the inner spring 312 is larger than that of the outer spring 311, so that a two-stage spring set 31 in which the inner spring 312 is loaded first can be formed.

In this embodiment, the suspension damper device 30 further includes a spring seat 34 and a hydraulic damper 33, one end of the hydraulic damper 33 is connected to the frame body 20, the other end of the hydraulic damper 33 is connected to the axle housing 14, and the spring seat 34 is located on top of the outer spring group 31.

On the basis of the above embodiment, referring to fig. 10, the elastic node 32 includes: a base 321, two elastic bodies 322 and two inner rings 323.

In this embodiment, an inner cavity is formed on the base 321, specifically, the inner cavity may be in an oblong cross-section shape, two inner rings 323 are located at the center of the elastic node 32, and the two inner rings 323 are configured into a split circular tube structure, and the elastic body 322 may be specifically located between the two inner rings 323 and the inner cavity, and is fixed with an inner cavity at one end of the base 321 and one inner ring 323, so that two mutually separated elastic structures can be formed, when the inner ring 323 receives a longitudinal force, pressure can be transferred to the elastic body 322 at one side, and thus, the problem that the service life of the whole structure is reduced due to the tensile force of the elastic body 322 at the other side can be avoided.

In this embodiment, referring to fig. 9, a low-friction bushing 324 may be further disposed in the elastic node 32, and by providing the low-friction bushing 324, abrasion caused by relative change of the vertical position of the guide post 226 and the elastic node 32 may be reduced.

In this embodiment, the base 321 is fixed on the node mounting surface 142 at the top of the axle box 14, and a wheel set limiting structure is formed between the base 321 and the limiting hole 2251 on the frame body, where a longitudinal single-side gap between the base 321 and the limiting hole may be set to be greater than 7mm, and a transverse gap may be set to be greater than 10mm, so that the requirement of adjusting the wheel set to a radial position when the vehicle passes through a curve line can be met.

On the basis of the above embodiment, referring to fig. 1, the present embodiment may further include a wheel set adjusting device 40, where the wheel set adjusting device 40 is located below the frame body 20, so as to meet the passing of the radial curve of the vehicle body, and reduce the abrasion of the wheel 12 and improve the service life of the wheel 12.

In this embodiment, the wheel set adjusting device 40 includes tie rods and fasteners, the tie rods being respectively connected to the diagonal axle boxes 14 and fastened by the fasteners.

On the basis of the above embodiment, referring to fig. 8, a brake device 50 and a monitoring system 60 are further included, the brake device 50 being located in the middle of the frame body 20.

In this embodiment, the monitoring system 60 includes a vibration sensor 61, a load sensor 62, a temperature sensor 63, and a speed sensor 64, wherein the vibration sensor 61 mainly collects signals and transmits the signals to the vehicle-level system wirelessly for monitoring the truck operation and the vibration of the cargo, and is mounted on the middle top of the side sill 22.

In this embodiment, the number of load sensors 62 may be specifically 4, and the load sensors are respectively installed at the bottom of the lower cover plate 225 at the end of the side beam 22, and are carried on the inner spherical surface of the spring seat 34 through the outer spherical surface of the bottom, and collect signals in a wired manner and provide the signals to the vehicle-level system for vehicle load monitoring statistics and overload and unbalanced load analysis.

In this embodiment, the temperature sensor 63 is a non-contact infrared temperature sensor, and is installed in a threaded through hole at the bottom of the axle box 14, the center of the temperature sensor 63 is aligned with the outer ring of the bearing 13, and signals are collected in a wired manner and provided to a vehicle-level system for monitoring the state of the bearing 13.

In this embodiment, a speed sensor 64 is secured to the inboard side of the axle housing 14 and is used to collect signals by wire and provide them to the vehicle-level system for vehicle speed and wheel set skid monitoring.

In this embodiment, the monitoring system 60 is provided to monitor the running speed of the vehicle body, the temperature of the bearing 13, etc. in real time and collect signals, so as to provide a foundation for on-line monitoring and management of the vehicle system.

On the basis of the embodiment, the invention also provides a truck comprising any inner side suspension direct-drive radial bogie, and the truck can support the truck body, bear and transmit various loads from the truck body to the wheel set or from the wheel rail to the truck body and improve the running stability of the truck by arranging the inner side suspension direct-drive radial bogie.

Claims

1. An inboard suspended direct drive radial bogie comprising:

the wheelset axle box device may include: the axle, the wheel, the bearing and the axle box, and a positioning ring can be arranged between the wheel and the bearing; wherein, a locating ring is arranged between the wheel and the bearing to adjust the interval between the inner sides of the wheels;

a guide post is arranged on one side, facing the lower cover plate, of the upper cover plate, and the guide post is connected with an elastic node to elastically position the wheel pair axle box device; the surface of the lower cover plate is provided with a limiting hole, the limiting hole limits the axle box device of the wheel set, and the limiting hole is arranged close to two ends of the upper cover plate;

the suspension damping device includes: a spring set and an elastic node;

the suspension vibration damping device further includes: the hydraulic shock absorber is connected with the framework main body at one end, and the axle box at the other end;

the elastic node includes: the device comprises a base, two elastic bodies and two inner rings;

2. The inboard suspended direct drive radial bogie of claim 1, wherein the wheelset housing device comprises: the brake disc and the motor are arranged in the middle of the axle, motor flanges are arranged on two sides of the motor, and the motor is used for providing driving force of the vehicle body;

the motor is a split permanent magnet direct drive motor.

3. The inboard suspended direct drive radial bogie of claim 2, wherein the wheel is located at an outermost end of the axle, the bearing is located inboard of the wheel, and the axle housing is located between the bearing and the wheel;

and a noise reduction ring is arranged on the wheel.

4. The inner side suspension direct-drive radial bogie according to claim 3, wherein the axle box is provided with a mounting hole, the axle box is mounted on the bearing through the mounting hole, and a damper seat is further arranged on one side of the axle box, which is positioned at the center of the bogie;

the axle box top is equipped with the node installation face, axle box end is equipped with the vertical face towards the bogie center, vertical face is as the installation face of wheel pair adjusting device.

5. The inside-suspended direct-drive radial bogie according to any one of claims 1 to 4, wherein the side beam adopts a concave structure, a motor seat is arranged on one side of the center of the cross beam, and a brake hanging seat is arranged on the other side of the center of the cross beam;

6. The inboard suspended direct drive radial bogie of any one of claims 1-4, further comprising: the wheel set adjusting device is positioned below the framework main body;

7. The inboard suspended direct drive radial bogie of any one of claims 1-4, further comprising: the braking device is positioned in the middle of the framework main body;

8. A truck, characterized by comprising at least: an inboard suspended direct drive radial bogie as claimed in any one of claims 1 to 7.