CN212447573U

CN212447573U - Novel end chassis structure suitable for articulated bogie

Info

Publication number: CN212447573U
Application number: CN202022058194.4U
Authority: CN
Inventors: 尹华; 金辉; 李宏双; 史赫
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-02-02
Anticipated expiration: 2030-09-18

Abstract

The utility model provides a novel end chassis structure suitable for articulated bogie which characterized in that: the utility model discloses simple structure interface is few, and the assembly precision requirement is low, has simplified the atress relation of automobile body and bogie, has increased the accuracy of finite element simulation analysis result, makes contributions for the weight reduction design of automobile body and vehicle comfort promotion; compared with the subway end steel underframe, the weight is reduced, and the light weight requirement of the vehicle is met; the interfaces with the bogie are reduced, and the time for assembling and dropping the whole vehicle is reduced by 30 percent.

Description

Novel end chassis structure suitable for articulated bogie

Technical Field

The utility model belongs to the technical field of rail vehicle automobile body makes, especially, relate to an end chassis structure suitable for articulated bogie.

Background

The high-floor hinged light rail vehicle has the advantages of less bogies, light weight and good vehicle curve passing capability. The hinge joint and the vehicle body connection are one of the most core connections, the double-fork structure end underframe and the cantilever structure end underframe are connected with the hinge joint at present, the connection interfaces are more, the connection interfaces are connected with the bearings, and the parts such as a hinge rotary table, a wear-resistant lining and the like are required to be connected and installed, the structure is complex, and the assembly requirement precision is high. In addition, with the development of the modern rail transit industry, the performance requirement of the undersized curve of the vehicle is continuously improved. In view of this, how to design and improve a vehicle body end underframe structure with few interfaces matched with an articulated bogie and meet the performance requirement of a vehicle undersize curve becomes an important problem which needs to be solved urgently in the rail transit industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be applicable to the articulated bogie the interface is few, simple structure, the swift automobile body end chassis structure of convenient assembling to satisfy the requirement of vehicle undersize curve performance.

In order to realize the above utility model, the utility model provides a novel end chassis structure suitable for articulated bogie, its characterized in that: the upper cover plate is fixedly connected with the upper end cover plate, the lower cover plate is fixedly connected with the lower end cover plate through the hinged mounting seat, the end plate is fixedly connected with the upper end cover plate, the cross beam is fixedly connected with the upper end cover plate and the lower end cover plate, and the two ends of the left side beam and the right side beam are respectively fixedly connected with the upper cover plate and the lower cover plate at the same side and the two ends of the upper end cover plate and the lower end cover plate at the same side.

Preferably, the upper end cover plate and the lower end cover plate are integrally of an M-shaped structure, and the joints of the two ends and the boundary beams are of a semi-dovetail structure, so that the structure is more stable.

Preferably, the upper cover plate and the lower cover plate are designed to be of a T-shaped structure, and the connecting parts of the two ends and the boundary beams are of a dovetail structure, so that the structure is more stable.

Preferably, the boundary beam is designed to be groove-shaped, and the joints of the boundary beam, the upper cover plate, the lower cover plate and the upper end cover plate and the lower end cover plate are provided with notches, so that no protrusion is formed on the surface of the welded structure.

Preferably, the crossbeam is fixedly connected with the edges of the upper crossbeams of the upper cover plate and the lower cover plate, so that the structure stability is ensured.

Preferably, one side in the middle of the end plate is provided with a U-shaped groove, the bottom edge of the U-shaped groove is flush with the outer edge of the upper end cover plate, and the other side of the end plate is fixedly connected with the outer edge of the lower end cover plate.

Preferably, a mounting stud is arranged between the upper end cover plate and the lower end cover plate, a boss is processed at an opening at the upper part of the mounting stud, the boss and the upper end cover plate are subjected to butt arc welding, and a bolt hole is formed in the bottom of the mounting stud and used for mounting a hinge bolt.

Preferably, a car erecting opening is formed in the side face of the connecting end of the right side beam and the upper end cover plate and is used for car erecting, hoisting, rescuing, shunting, coupling and multi-car marshalling and returning operation.

The utility model has simple structure and few interfaces, has low requirement on assembly precision, simplifies the stress relation between the vehicle body and the bogie, increases the accuracy of finite element simulation analysis results, and makes contributions to the weight reduction design of the vehicle body and the improvement of the vehicle comfort; compared with the subway end steel underframe, the weight is reduced, and the light weight requirement of the vehicle is met; the interfaces with the bogie are reduced, and the time for assembling and dropping the whole vehicle is reduced by 30 percent.

Through research on papers and data, the curve passing capacity of the high-low plate hinged light rail vehicles on the market is basically R40m, R30m and R25 m. The utility model discloses a high floor articulates light rail car end chassis structure is connected because of sleeper beam and slewing bearing, has increased the relative corner of automobile body and bogie, and the vehicle passes through little curve ability and strengthens, can satisfy the requirement of passing through of 25m little curve.

Drawings

FIG. 1 end chassis isometric view (front)

FIG. 2 end chassis isometric view (reverse side)

FIG. 3 end chassis side view

FIG. 4 is a schematic view of an end cover plate (top)

FIG. 5 is a schematic view of the upper cover plate

FIG. 6 schematic view of a hinged mount

FIG. 7 mounting stud schematic

FIG. 8 end chassis cross-sectional view

FIG. 9 end chassis and hinge connection view

The specific embodiments,

As shown in fig. 1, 2 and 3, a novel end chassis structure suitable for an articulated bogie comprises an upper end cover plate 1, an upper cover plate 2, a mounting stud 3, a left side beam 4, a right side beam 5, an end plate 6, a cross beam 7, a right traction beam 8, a frame opening assembly 9, a lower cover plate 10, a lower end cover plate 11, an articulated mounting seat 12, a left traction beam 13, a reinforcing beam 14, a reinforcing beam 15, a reinforcing beam 16, a support plate 17 and a support plate 18. The end underframe main body is made of stainless steel material and is marked as X2CrNiN18-7, and the EN 10088 standard is met. And the hinged mounting area is made of carbon steel, and the mark is S355, so that the EN 10025 standard is met.

As shown in fig. 1-8, the upper end cover plate is made of stainless steel plate with thickness of 8mm, the structure is in M-shaped design, and the joint of the area 1-1 and the boundary beam is in a semi-dovetail structure, so that the structure is more stable. The upper cover plate 2 is made of stainless steel with the thickness of 8mm, the structure is in a T-shaped design, and the joint of the area 2-1 and the boundary beam is in a dovetail structure, so that the structure is more stable. The height of the mounting stud 3 is 126mm, the area 3-1 and the upper end cover plate 1 adopt butt arc welding, and the area 3-2 is fixed with a bolt hinged with the mounting stud. The

boundary beams

4 and 5 are made of stainless steel with the thickness of 4mm, the groove type design is adopted, and the upper opening and the lower opening of the boundary beams ensure that no protrusion exists on the surface of the welded structure, so that the traditional lap joint or plug-in connection structure is broken through. The cross beam 7 is made of stainless steel with the thickness of 8mm and mainly bears vertical load. The draft sill 8 is made of stainless steel with the thickness of 6mm and mainly bears longitudinal and vertical loads. The vehicle frame opening 9 is made of stainless steel with the thickness of 6mm, and plays an important role in vehicle frame, hoisting and other links. The lower cover plate 10 is made of stainless steel with the thickness of 8mm, the structure is designed in a T shape, and the joint of the lower cover plate and the boundary beam is made of a dovetail structure, so that the structure is more stable. The lower end cover plate 11 is a stainless steel plate with the thickness of 8mm, the structure is in an M-shaped design, and a semi-dovetail structure is adopted at the joint of the lower end cover plate and the side beam, so that the structure is more stable. The hinged mounting seat 12 is formed by machining a 60mm forged steel piece, a region 12-1 is a hinged mounting bolt through hole, a region 12-2 is a dovetail structure, a region 12-3 is a hinged mounting limiting groove, and a region 12-4 is a reinforcing rib. The reinforcing beam 14, the reinforcing beam 15, the reinforcing beam 16, the supporting plate 17 and the supporting plate 18 are made of stainless steel plates with the thickness of 8mm and mainly bear vertical loads.

All the parts are connected in an arc welding mode, and the whole welding structure ensures that the end underframe can bear the EN 12663P-IV level strength requirement, and simultaneously bear the static pressure load of 400KN and the tensile load of 300KN, and the stress of the end underframe does not exceed the allowable design stress. The design of the frame wagon mouth 9 meets EN 16404 standard, the frame wagon mouth strength meets EN12663 standard, and simultaneously meets the requirements of various use conditions of frame wagon, lifting, rescuing, shunting, continuous hanging and multi-wagon marshalling returning operation under various conditions, when the vehicle is in working conditions such as frame wagon, lifting, rerailing and the like, a frame wagon pin is inserted into the frame wagon mouth 9, and the working conditions are completed through a lifting appliance or a lifting device.

As shown in fig. 9, which is a connection view of the end chassis and the hinge structure, in order to ensure the installation accuracy of the end chassis and the hinge, the end chassis is welded and then integrally machined, and the hinge structure 19 is installed on the end chassis through a fastener 20 and then connected through a slewing bearing and a hinge bogie.

Claims

1. The utility model provides a novel end chassis structure suitable for articulated bogie which characterized in that: the upper cover plate is fixedly connected with the upper end cover plate, the lower cover plate is fixedly connected with the lower end cover plate through the hinged mounting seat, the end plate is fixedly connected with the upper end cover plate, the cross beam is fixedly connected with the upper end cover plate and the lower end cover plate, and the two ends of the left side beam and the right side beam are respectively fixedly connected with the upper cover plate and the lower cover plate at the same side and the two ends of the upper end cover plate and the lower end cover plate at the same side.

2. The new end chassis configuration for an articulated truck according to claim 1, characterized in that: the upper end cover plate and the lower end cover plate are integrally of an M-shaped structure, and the joints of the two ends and the boundary beams are of a semi-dovetail structure.

3. The new end chassis configuration for an articulated truck according to claim 1, characterized in that: the upper cover plate and the lower cover plate are designed to be of T-shaped structures, and the joints of the two ends and the boundary beams are of dovetail structures.

4. The new end chassis configuration for an articulated truck according to claim 1, characterized in that: the boundary beam adopts a groove-shaped design, and the joints of the boundary beam, the upper cover plate, the lower cover plate and the upper end cover plate and the lower end cover plate are provided with openings, so that no protrusion is formed on the surface of the welded structure.

5. The new end chassis configuration for an articulated truck according to claim 1, characterized in that: the beam is fixedly connected with the edge of the upper beam of the upper cover plate and the lower cover plate.

6. The new end chassis configuration for an articulated truck according to claim 1, characterized in that: one side of the middle of the end plate is provided with a U-shaped groove, the bottom edge of the U-shaped groove is flush with the outer edge of the upper end cover plate, and the other side of the end plate is fixedly connected with the outer edge of the lower end cover plate.

7. The new end chassis configuration for an articulated truck according to claim 1, characterized in that: and a mounting stud is arranged between the upper end cover plate and the lower end cover plate, a boss is processed at an opening at the upper part of the mounting stud, the boss and the upper end cover plate are subjected to butt arc welding, and a bolt hole is formed at the bottom of the mounting stud and used for mounting a hinged bolt.

8. The new end chassis configuration for an articulated truck according to claim 1, characterized in that: and a vehicle frame opening is arranged on the side surface of the connecting end of the right side beam and the upper end cover plate.