CN210526533U

CN210526533U - Floor beam structure connected by bolts

Info

Publication number: CN210526533U
Application number: CN201921053472.8U
Authority: CN
Inventors: 孔维国; 郑建辉; 段鹏飞
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-05-15
Anticipated expiration: 2029-07-08

Abstract

A bolted floor beam structure characterized in that: the floor beam is provided with a hole on the end part, a stud is welded in the hole and passes through the floor beam to be connected with a connecting piece below the floor beam, the connecting piece is welded with a front-end anti-creeper component, and the novel structure transfers the longitudinal force borne by the floor beam and the welding line of the anti-creeper in the traditional structure to the transition angle iron, thereby avoiding the problem that the welding line bears too large stress. The utility model discloses adopt connecting piece bolted connection structure between the fixed anticreeper of well floor beam and front end, solved the problem that the welding seam connection bore great longitudinal force, avoid welding stress to concentrate, satisfied the requirement of collision completely. The bottom surface and the side surface of the floor beam are provided with the round holes which are uniformly distributed, so that the floor beam is weaker in rigidity, and the planing energy absorption of the crushing pipe is not influenced in the collision process. The utility model discloses for the mode of gluing, bolted connection has better maintainability.

Description

Floor beam structure connected by bolts

Technical Field

The utility model belongs to the technical field of rail vehicle body structure design, especially, relate to a prevent stress concentration's ground plate girder construction.

Background

At present, the underframe corrugated floor of a stainless steel subway vehicle is mainly supported by floor beams and main cross beams. The chassis middle part mainly relies on the main beam to support, and two tip mainly rely on the floor beam to support, and the floor beam is used for bearing the vertical load of automobile body, and the great longitudinal load of automobile body still need be born to vertical corrugated floor. The two ends of the existing floor beam and the cross beam generally adopt a common arc welding structure, and are subjected to electric rivet welding with the corrugated floor, the welding seam connection cannot bear large longitudinal force, and meanwhile, the welding connection stress is too large, so that the extremely high requirement of the American ASME RT2-2014 standard on vehicle body collision cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a satisfy the floor beam structure of ASME RT2-2014 collision requirement, avoid welding stress too big.

In order to achieve the above object, the utility model provides a bolted connection's ground plate girder construction, its characterized in that: the floor beam is provided with a hole on the end part, a stud is welded in the hole and passes through the floor beam to be connected with a connecting piece below the floor beam, the connecting piece is welded with a front-end anti-creeper component, and the novel structure transfers the longitudinal force borne by the floor beam and the welding line of the anti-creeper in the traditional structure to the transition angle iron, thereby avoiding the problem that the welding line bears too large stress.

The connecting piece is transition angle iron.

The stud penetrates through the floor beam and the transition angle iron, the upper end of the stud is welded with the floor beam, and the lower part of the stud is screwed by a nut.

The side surfaces and the bottom surface of the floor beam are uniformly provided with the round holes, so that the rigidity of the floor beam is weakened, and the floor beam cannot influence the normal energy absorption of the energy absorption element during collision.

The utility model discloses adopt connecting piece bolted connection structure between the fixed anticreeper of well floor beam and front end, solved the problem that the welding seam connection bore great longitudinal force, avoid welding stress to concentrate, satisfied the requirement of collision completely. The bottom surface and the side surface of the floor beam are provided with the round holes which are uniformly distributed, so that the floor beam is weaker in rigidity, and the planing energy absorption of the crushing pipe is not influenced in the collision process. The utility model discloses for the mode of gluing, bolted connection has better maintainability.

Drawings

FIG. 1 is an exploded view of the present invention;

fig. 2 is a schematic structural diagram of the utility model after connection and installation.

Detailed Description

Referring to fig. 1, the floor beam structure of the present invention comprises: stud 1, floor beam 2, anticreeper component 3, transition angle iron 4 and nut 5. Wherein, the stud 1 passes through the floor beam 2 and the transition angle iron, the upper end is welded with the floor beam, and the lower part is screwed by a nut 5. The transition angle iron 4 is welded with the anti-creeper component 3. The connecting structure avoids welding seams between the floor beam and the anti-creeper structure, and meanwhile, the round holes 6 are uniformly formed in the side surface and the bottom surface of the floor beam, so that the rigidity of the floor beam is reduced, the influence of the floor beam on energy absorption action in collision is reduced, and the extremely high requirement of the American ASME RT2-2014 standard on vehicle body collision is met. Meanwhile, compared with a gluing mode, the bolt connection has better maintainability.

The utility model discloses a mounting means and trompil are arranged in the rational design connection for floor beam structure when bearing the vertical power in floor, satisfies ASME RT 2-2014's collision requirement completely, has the structure light and handy simultaneously, advantage such as cost of maintenance low.

Claims

1. A bolted floor beam structure characterized in that: the upper surface of the end part of the floor beam is provided with a hole, a stud is welded in the hole, the stud penetrates through the floor beam to be connected with a connecting piece below the floor beam, and the connecting piece and the front-end anti-creeper assembly are welded and used for transferring the longitudinal force borne by the welding seam of the floor beam and the anti-creeper to the connecting piece.

2. A bolted floor beam structure according to claim 1, wherein: the connecting piece is transition angle iron.

3. A bolted floor beam structure according to claim 1, wherein: the stud penetrates through the floor beam and the connecting piece, the upper end of the stud is welded with the floor beam, and the lower part of the stud is screwed by a nut.

4. A bolted floor beam structure according to claim 1 or 3, characterized in that: the side surfaces and the bottom surface of the floor beam are uniformly provided with round holes for weakening the rigidity of the floor beam, and the normal energy absorption of the energy absorption element is not influenced during collision.