CN210971084U - Novel bogie - Google Patents

Abstract

The utility model discloses a novel bogie, which comprises an axle system, a driving device, a frame, a primary suspension system, a secondary suspension system, a basic braking device and a central traction device; the driving device is driven by a permanent magnet direct drive motor, which is connected to The axle system, the axle system is connected to the frame through the primary suspension system, the primary suspension system is located at the inner end of the axle system, the secondary suspension system is installed on the frame, the basic braking device is installed on the frame and its braking end faces the axle system, the center The traction device is installed in the air spring of the secondary suspension system. The bogie provided by the utility model adopts the permanent magnet direct drive motor drive system and adopts the built-in design of the axle box body, so that the beam of the frame is shortened, which is beneficial to increase the rigidity of the frame and reduce the self-weight. The central single air spring secondary suspension system is used to improve the It can improve the dynamic performance and reduce the noise when the vehicle is running; to a certain extent, it can improve the wear of the curved wheel and rail.

Description

A new type of bogie

technical field

The utility model relates to the field of bogies, in particular to a novel railway vehicle bogie.

Background technique

In the railway industry, the bogie is also called the running part. The "running part" refers to the part of the train that is responsible for guiding and carrying the car body running along the line. It is one of the most important key components of rail transit vehicles. Legs have irreplaceable significance for the operation of rail transit vehicles. The safety and reliability of the bogie ensures the driving safety of the vehicle. Various parameters of the bogie directly determine the stability of the vehicle and the ride comfort of the vehicle. In order to better understand the concept of the "running part" of the vehicle based on the wheel-rail system, It is necessary to understand the functions of the running department:

First of all, the carrying task is the most basic task of the running department. As a means of transportation, the main function of railway vehicles is to deliver goods or passengers safely and comfortably to their destinations. The function of the running part is to ensure that the vehicle runs flexibly, safely and smoothly along the rail and passes through the curve; it can reliably withstand various forces acting on the vehicle and transmit it to the rail;

Secondly, in order to realize the acceleration and deceleration of the vehicle, the running part must be able to make full use of the adhesion between the wheel and rail, and reliably transmit the traction and braking force between the vehicle body and the rail;

Furthermore, the running part is also responsible for alleviating the mutual impact between the vehicle and the rail, reducing the vibration of the vehicle, and ensuring sufficient running stability and good running quality;

Finally, the guiding function is the task that is most characteristic of rail vehicles. A traditional wheelset consists of two rigidly connected wheels. The shape of the tread allows the wheelset to change the rolling radius during traverse. When crossing a curve, the outer wheel walks more than the inner wheel. After a longer distance, the wheelset can be automatically adjusted to the radial position. On the other hand, due to the geometric relationship between the wheel and the rail and the effect of the creep force, the wheelset will start to oscillate sideways and shake its head. , which is the meandering motion, which is the main factor determining the critical speed of system instability.

Most of the existing bogies are of the external axle box type. This form of bogie wheelset and frame has large mass, is difficult to pass through small radius curves, and has poor adaptability to line distortion, resulting in relatively poor passing ability of small radius curves, increasing the Wheel and rail wear, the cost of operation is high; there is a phenomenon that the wheel-rail action is large and the running performance is poor due to the large unsprung mass; the inter-sprung mass is large, and the lateral impact on the bearing is also large. In this way, the new bogie has the following requirements: simplifying the structure and reducing the quality of the bogie; enhancing the curve passing ability of the bogie and reducing the curve wear; improving the adaptability of the vehicle to the line and reducing the cost of the operation and maintenance cycle of the bogie.

Utility model content

In order to solve the above problems, the purpose of the present invention is to provide a new type of bogie, which can reduce the weight of the bogie, improve the adaptability of the vehicle, and reduce the life cycle cost of the rolling stock and infrastructure.

In order to achieve the above purpose, the technical scheme adopted by the present utility model:

A new type of bogie includes an axle system, a driving device, a frame, a primary suspension system, a secondary suspension system, a basic braking device and a central traction device;

The drive device is connected to the axle system, the axle system is connected to the frame through a primary suspension system, the primary suspension system is located at the inner end of the axle system, and the secondary suspension system is mounted on the frame , the base braking device is mounted on the frame with its braking end facing the axle system, and the central traction device is mounted in the secondary suspension system.

Further, the axle system includes a middle axle and wheels at both ends of the axle.

Further, the drive device includes a drive motor and a motor pull rod, the motor pull rod connects the lower end of the drive motor and the lower end of the frame, and the drive motor adopts a permanent magnet direct drive motor.

Further, the frame has an H-shaped structure, and the frame includes two side beams and a beam connecting the two side beams, and the side beams and the beam are made of carbon fiber materials.

Further, the primary suspension system includes an axle box body, a coil steel spring and a hydraulic shock absorber;

One end of the axle box body is rotatably sleeved on the axles inside the two wheels, and the other end is hinged with the frame; the bottom ends of the spiral steel spring and the hydraulic shock absorber are both installed on the axle box body, and the top ends are connected to the axle box body. at the corresponding mounting seat of the frame.

Further, the axle box body adopts a two-body axle box body.

Further, the secondary suspension system includes an anti-snake shock absorber, a single airbag air spring, a lateral shock absorber and an anti-roll torsion bar;

The anti-snake shock absorber is installed on the outside of the two side beams, the single air bag air spring is installed in the middle of the upper end of the beam, the transverse shock absorber is installed laterally on both sides of the single air bag air spring, the anti-side air spring is installed Rolling torsion bars are installed on both sides of the single airbag air spring and below the lateral shock absorber.

Further, the basic brake device includes a brake mounting beam, a brake caliper, a brake cylinder and a brake pad;

The brake installation beam is installed at the bottom end of the side beam, the left and right ends of the brake installation beam are hinged with brake calipers, the rear ends of the two brake calipers are both connected to the output end of the brake cylinder, and the front end of the brake caliper is connected to the output end of the brake cylinder. A pair of opposite brake pads are installed, and the wheel is located between the two brake pads.

Further, the central traction device includes a traction rod and a rubber pad;

The top end of the traction rod is installed in the air spring of the single air bag, and the bottom end penetrates the air spring of the single air bag to fit with the rubber pad; the rubber pad is annular and connected with the frame.

Further, the bogie also includes a monitoring system, the monitoring system includes a temperature-vibration composite sensor, a vibration acceleration sensor and a data preprocessing module, the temperature-vibration composite sensor is installed at the axle box body, and the vibration The acceleration sensor is installed at the diagonal position at the top of the frame, and the data preprocessing module is installed at the left and right ends of the frame.

The beneficial effects of the present utility model:

In the bogie provided by the utility model, the built-in structure of the axle box body shortens the beam of the framework, which is beneficial to increase the rigidity of the framework and reduce the self-weight, and at the same time, the quality of the framework is small and small, which makes the structure of the bogie more compact; the built-in axle box body shortens the axle The lateral span of the box suspension, the yaw angle stiffness and the roll angle stiffness of the wheelset are all reduced, which effectively improves the vehicle's ability to pass through curves and adapt to uneven lines.

In the bogie provided by the utility model, the primary suspension system adopts the axle box body top-mounted helical steel spring, and the hydraulic shock absorber is offset. It also reduces the mass of the bogie and the unsprung mass, and improves the dynamic performance; in addition, it can shield the noise generated when some bearings are rolling, and reduce the noise when the vehicle is running.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the bottom view of the utility model;

Fig. 3 is the installation diagram of the drive device and the primary suspension system of the present invention;

Fig. 4 is the structural schematic diagram of the first-series suspension system of the present invention;

Fig. 5 is the structural schematic diagram of the axle box body of the present invention;

Fig. 6 is the structural representation of the framework of the utility model;

7 is a schematic structural diagram of the basic braking device of the present invention;

8 is a schematic diagram of the connection between the central traction device and the single airbag air spring of the present invention;

In the figure: 1. Axle system; 11. Axle; 12. Wheels; 2. Driving device; 21. Drive motor; 22. Motor pull rod; 3. Frame; 31. Side beam; 32. Cross beam; 4. Primary suspension system ;41, axle box body; 42, spiral steel spring; 43, hydraulic shock absorber; 5, secondary suspension system; 51, anti-snake shock absorber; 52, single air bag air spring; 53, transverse shock absorber; 54 , anti-roll torsion bar; 6, basic brake device; 61, brake mounting beam; 62, brake caliper; 63, brake cylinder; 64, brake pad; 7, central traction device; 71, traction rod; 72, rubber pad; 81, temperature and vibration composite sensor; 82, vibration acceleration sensor; 83, data preprocessing module.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model is further described below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "provided with", "sleeve/connection", "connection", etc., should be understood in a broad sense, such as "Connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be two elements Internal connectivity. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1

A new type of bogie, as shown in Figures 1, 2 and 8, includes an axle system 1, a drive device 2, a frame 3, a primary suspension system 4, a secondary suspension system 5, a basic braking device 6 and a central traction device 7 ;

The drive device 2 is connected to the axle system 1, the axle system 1 is connected to the frame 3 through the primary suspension system 4, the primary suspension system 4 is located at the inner end of the axle system 1, the secondary suspension system 5 is installed on the frame 3, and the basic braking device 6 is installed On the frame 3 with its braking end facing the axle system 1 , a central traction device 7 is installed in the secondary suspension system 5 .

As an optimized solution of this embodiment, as shown in FIG. 3 , the axle system 1 includes an axle 11 in the middle and wheels 12 at both ends of the axle 11 , and the axle 11 rotates to drive the wheels to move.

As an optimized solution of this embodiment, as shown in FIGS. 1 and 2 , the drive device 2 includes a drive motor 21 and a motor pull rod 22 , and the motor pull rod 22 connects the lower end of the drive motor 21 and the lower end of the frame 3 to fix the drive motor 21 and prevent the drive motor from being driven. The body of 21 rotates. The drive motor 21 adopts a permanent magnet direct drive motor, which is highly integrated with a permanent magnet direct drive traction braking module, replacing a mechanical transmission system such as a gearbox. Thereby reducing the possibility of failure.

As an optimized solution of this embodiment, as shown in FIG. 6 , the frame 3 has an H-shaped structure, and the frame 3 includes two side beams 31 and a beam 32 connecting the two side beams 31 , and both the side beams 31 and the beam 32 are made of carbon fiber material . The frame 3 is simple in structure and light in weight, the main structure of the frame is made of plate, and the key parts are forged. The built-in structure of the axle box body 41 shortens the beam 32 of the framework, which is beneficial to increase the rigidity of the framework 3 and reduce its own weight. Compared with the bogie suspended from the outside axle box, the weight of the bogie is reduced by about 30%. The body structure is more compact; the inner axle box suspension bogie shortens the lateral span of the axle box suspension, and the wheelset (referring to the components assembled by two wheels and one axle) has a sway angle stiffness and roll angle stiffness of about It is 1/4 of the traditional bogie, effectively improving the ability to pass the curve and adapt to the unevenness of the line.

As an optimized solution of this embodiment, as shown in FIGS. 3-5 , the primary suspension system 4 includes an axle box 41 , a spiral steel spring 42 and a hydraulic shock absorber 43 ; one end of the axle box 41 is rotatably sleeved on the two wheels 12 . On the inner axle 11 , the other end is hinged with the frame 3 ; the bottom ends of the spiral steel spring 42 and the hydraulic shock absorber 43 are both installed on the axle box 41 , and the top ends are connected to the corresponding mounting seat of the frame 3 .

The function of the primary suspension system 4 is to locate the wheelset, attenuate the excitation of the wheel and rail, and isolate high-frequency vibration. The function of the axle box 41 is to connect the axle 11 and fix the wheel 12 and the axle 11 on the frame 3; the spiral steel spring 42 Its function is to buffer the wheel-rail force transmitted upward from the wheel-rail; the function of the hydraulic shock absorber 43 is to damp vibration. In this embodiment, the axle box body 41 is placed on top of the spiral steel spring 42, and the hydraulic shock absorber 43 is offset. Compared with the traditional outside axle box type bogie, the axle 11 can be shortened by nearly 500mm, which reduces the overall weight of the wheelset. Reduced bogie mass and unsprung mass, improved dynamic performance. Since the primary suspension system 4 is installed on the inner side of the wheelset, the wheelset can shield the noise generated when part of the bearing is rolling during the running of the vehicle, so the noise during the running of the vehicle can be reduced.

The stiffness of the axle box body node is the core parameter of the bogie, which determines the stability of straight running and the performance of curve passing. These two performances are a pair of contradictions. The design of the bogie should take into account both performances, so adaptive variable stiffness positioning is adopted. The node is the best choice. The self-adaptive variable stiffness positioning node means that the axle box node can automatically change its stiffness according to the different wheel-rail force responses of the vehicle running on curves and straight lines, which is the prior art, such as the application number CN201721460565 .3 Axial positioning nodes in utility model patents. The primary suspension system 4 adopts variable stiffness nodes, which have the characteristics of high stiffness in straight running and low stiffness in curved running, which can improve the wear of the curved wheel and rail to a certain extent. , wheel-rail lateral force and wheel-axle lateral force are small. Compared with the traditional bogie, the wheel attack angle is reduced by about 13%, the wheel-rail wear is reduced by about 15%, and the wheel-rail lateral force is reduced by about 6%.

As an optimized solution of this embodiment, the axle box body 41 adopts a two-piece axle box body. The two-piece axle box body 41 means that the axle box body is not a whole, but two parts are connected by bolts, as shown in FIG. 5 . The axle box body 41 is a key component of wheelset positioning, a complex force-bearing component, and bears various vibration loads such as the primary suspension system 4 and the wheelset, and is especially responsible for the installation of bearings. Since the bogie axle box body 41 is built in, in order to facilitate the maintenance of the axle box in the later stage and the replacement of the wheelset, a two-piece axle box body is comprehensively considered.

As an optimized solution of this embodiment, as shown in FIGS. 1 and 2 , the secondary suspension system 5 includes an anti-snake shock absorber 51 , a single airbag air spring 52 , a lateral shock absorber 53 and an anti-roll torsion bar 54 ; The shock absorber 51 is installed on the outside of the two side beams 31, the single air bag air spring 52 is installed in the middle of the upper end of the cross beam 32, the transverse shock absorber 53 is installed laterally on both sides of the single air bag air spring 52, and the anti-roll torsion bar 54 is installed in the single air bag. The air spring 52 is on both sides and below the lateral shock absorber 53 .

The function of the anti-snake shock absorber 51 is to attenuate the meandering motion of the bogie and the vehicle body and improve the critical speed of the vehicle; the function of the single airbag air spring 52 is to connect the frame and the vehicle body and support the tractor body; The function is to reduce vibration in the lateral direction; the function of the anti-roll torsion bar 54 is to improve the rolling stiffness of the vehicle body. The single-bag air spring 52 can reduce the longitudinal displacement and torsional deformation of the single-bag air spring 52 when the bogie is deflected on a small radius curve, thereby improving the working condition of the single-bag air spring 52 .

As an optimized solution of this embodiment, as shown in FIG. 7 , the basic brake device 6 includes a brake mounting beam 61 , a brake caliper 62 , a brake cylinder 63 and a brake pad 64 ; the brake mounting beam 61 is mounted on the The bottom end of the side beam 31, the left and right ends of the brake mounting beam 61 are hinged with brake calipers 62, the rear ends of the two brake calipers 62 are both connected to the output end of the brake cylinder 63, and the front ends are installed with a pair of opposite brake calipers. The brake pads 64 and the wheel 12 are located between the two brake pads 64 . The base braking device 6 is used for braking the wheels 12 .

As an optimized solution of this embodiment, as shown in FIG. 8 , the central traction device 7 includes a traction rod 71 and a rubber pad 72 ; the top end of the traction rod 71 is installed in the single airbag air spring 52 , and the bottom end passes through the single airbag air spring 52 and the rubber pad 72 . The rubber pad 72 is in clearance fit; the rubber pad 72 is annular and is connected with the frame 3 . The function of the central traction device 7 is to transmit the longitudinal traction force between the bogie frame and the vehicle body.

As an optimized solution of this embodiment, as shown in FIGS. 3 and 6 , the bogie further includes a monitoring system. The monitoring system includes a temperature-vibration composite sensor 81, a vibration acceleration sensor 82, and a data preprocessing module 83. The temperature-vibration composite sensor 81 is installed on the At the axle box body 41 , the vibration acceleration sensor 82 is installed at the diagonal position at the top of the frame 3 , and the data preprocessing module 83 is installed at the left and right ends of the frame 3 .

The monitoring system can monitor the status of key components, such as the vibration status monitoring of axles, bearings, wheel status and other components, as well as the dynamic performance monitoring of the whole machine. Among them, the temperature and vibration composite sensor 81 is used to detect whether the bearing is normal; the vibration acceleration sensor 82 is used to detect the vibration acceleration of the bogie and evaluate its operation performance; the data preprocessing module 83 is used to preprocess the information uploaded by the sensor.

In order to better understand the present utility model, a complete description is made to the working principle of the present utility model below:

The primary suspension system 4 supports the frame 3; the secondary suspension system 5 supports the vehicle body; the central traction device 7 transmits the traction force to the vehicle body. When the vehicle is moving, the driving force of the driving motor 21 is from the wheelset to the axle box 41, the axle box 41 and then to the frame 3. The frame 3 passes through the rubber pad 72 of the central traction device 7 to the traction rod 71, and the traction rod 71 to the single air bag air. The spring 52, and then to the car body, drives the car body to move.

When the vehicle is braked, the brake cylinder 63 of the basic brake device 6 works to drive the brake pad 64 to clamp the wheel, and consume energy through friction between the brake pad and the wheel brake disc.

The basic principles, main features and advantages of the present invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention There will also be various changes and improvements in the new model, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A novel bogie, characterized in that: it comprises an axle system (1), a drive device (2), a frame (3), a primary suspension system (4), a secondary suspension system (5), and a basic braking device (6) and the central traction device (7); The drive device (2) is connected to the axle system (1), the axle system (1) is connected to the frame (3) through a primary suspension system (4), and the primary suspension system (4) is located at the The inner end of the axle system (1), the secondary suspension system (5) is installed on the frame (3), and the basic braking device (6) is installed on the frame (3) and brakes The end faces the axle system (1), and the central traction device (7) is mounted in the secondary suspension system (5). 2 . The bogie according to claim 1 , wherein the axle system ( 1 ) comprises a middle axle ( 11 ) and wheels ( 12 ) at both ends of the axle ( 11 ). 3 . 3. The bogie according to claim 1, characterized in that: the drive device (2) comprises a drive motor (21) and a motor pull rod (22), and the motor pull rod (22) is connected to the lower end of the drive motor (21) and the lower end of the frame (3), the drive motor (21) adopts a permanent magnet direct drive motor. 4. The bogie according to claim 2, characterized in that: the frame (3) is in an H-shaped structure, and the frame (3) comprises two side beams (31) and a connection between the two side beams (31) The beam (32) of the side beam (31) and the beam (32) are made of carbon fiber material. 5. The bogie according to claim 4, characterized in that: the primary suspension system (4) comprises an axle box body (41), a helical steel spring (42) and a hydraulic shock absorber (43); One end of the axle box body (41) is rotatably sleeved on the axle (11) inside the two wheels (12), and the other end is hinged with the frame (3); the spiral steel spring (42) and the hydraulic shock absorber The bottom ends of (43) are all mounted on the axle box body (41), and the top ends are connected to the corresponding mounting seats of the frame (3). 6. The bogie according to claim 5, wherein the axle box body (41) adopts a two-piece axle box body. 7. The bogie according to claim 4, characterized in that: the secondary suspension system (5) comprises an anti-snake shock absorber (51), a single airbag air spring (52), and a lateral shock absorber (53) and anti-roll torsion bar (54); The anti-snake shock absorber (51) is installed on the outer sides of the side beams (31), the single air bag air spring (52) is installed in the middle of the upper end of the beam (32), and the transverse shock absorber (53) is transverse Installed on both sides of the single air bag air spring (52), the anti-roll torsion bar (54) is installed on both sides of the single air bag air spring (52), and is located below the lateral shock absorber (53) . 8. The bogie according to claim 4, characterized in that: the basic brake device (6) comprises a brake mounting beam (61), a brake caliper (62), a brake cylinder (63) and a brake brake pad (64); The brake installation beam (61) is installed at the bottom end of the side beam (31), and the left and right ends of the brake installation beam (61) are hinged with brake calipers (62), and the two brake calipers (62) The rear end of the wheel is connected to the output end of the brake cylinder (63), the front end is installed with a pair of opposite brake pads (64), and the wheel (12) is located between the two brake pads (64). 9. The bogie according to claim 7, wherein the central traction device (7) comprises a traction rod (71) and a rubber pad (72); The top end of the traction rod (71) is installed in the single airbag air spring (52), and the bottom end passes through the single airbag air spring (52) and is in clearance fit with the rubber pad (72); the rubber pad (72) It is annular and connected with the frame (3). 10. The bogie according to claim 5, characterized in that: the bogie further comprises a monitoring system, the monitoring system comprising a temperature vibration composite sensor (81), a vibration acceleration sensor (82) and a data preprocessing module (81). 83), the temperature and vibration composite sensor (81) is installed at the axle box body (41), and the vibration acceleration sensor (82) is installed at the diagonal position at the top of the frame (3). The processing modules (83) are installed at the left and right ends of the frame (3).

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