CN114228770A

CN114228770A - A frame device for installing eddy current braking mechanism

Info

Publication number: CN114228770A
Application number: CN202210064397.5A
Authority: CN
Inventors: 李洪强; 王瑞卓; 韩光旭; 赵文学
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-03-25

Abstract

The framework device comprises a framework, an eddy current braking mechanism and an axle box mechanism, wherein the framework comprises two side beams, two cross beams, two small longitudinal beams and two braking cross beams, and the axle box mechanism comprises an axle box rotating arm, an axle box rotating arm hoop, a corrugated pipe, a sealing gasket, an end cover, a lower base plate and a side base plate. The framework device can meet the operating speed of a motor train unit at the speed of 350km/h, can realize the installation of the eddy current braking mechanism, has a simple framework structure, provides enough space for the installation and the use of the eddy current braking mechanism, has excellent manufacturability, is convenient to realize, and has enough structural strength allowance. The framework device meets the requirements of axle boxes and eddy current brake functions and structural strength thereof, and realizes the bearing of an eddy current brake mechanism in a compact space.

Description

Framework device provided with eddy current braking mechanism

Technical Field

The invention relates to the technical field of railway vehicle bogie frame devices, in particular to a frame device provided with an eddy current brake mechanism.

Background

The bogie is an important part of the railway vehicle as a running gear of the railway vehicle, the framework is an important part of the bogie, and the high-speed motor train unit has high running speed and long braking distance. If the eddy current braking mechanism is applied to the high-speed motor train unit, N/S levels of electromagnets of the eddy current braking mechanism are alternately arranged and keep a certain air gap with the steel rail; when the train runs, the steel rail cuts magnetic lines, the surface generates induction eddy current and the main magnetic field distorts, and the magnetic lines of force deflect to generate tangential component force, namely braking force; the non-adhesive braking force is generated through the eddy current effect, the emergency braking and the service braking functions are achieved, and the braking distance of the high-speed motor train unit can be effectively reduced by being applied in cooperation with other braking modes on the high-speed motor train unit.

The axle box mechanism of the bogie of the railway vehicle is a part which is sleeved on a journal and is connected with a wheel set and the bogie, and a bearing is pressed in the axle box mechanism, so that the weight of the vehicle body can be loaded and transferred to the wheel set, and sliding friction is changed into rolling so as to realize the translation of the vehicle body. However, after the eddy current braking system is introduced into a high-speed motor train unit with the speed of more than 300km/h, the eddy current braking mechanism has a large volume, and in a working state, the bearing arm extending outwards from the eddy current braking mechanism needs to be supported, the traditional bogie axle box mechanism is limited by vehicle limitations and structural space, cannot meet the bearing scheme of a hanging mode below the traditional bogie axle box mechanism, and only can be assembled with a bearing device with an excessively small size. Under the severe working conditions of the high-speed motor train unit and under the condition that large suction force is generated between the eddy current brake mechanism and the steel rail under emergency braking, the small-size bearing device below the axle box mechanism cannot meet the requirement on structural strength, and the running safety of a train is influenced.

Disclosure of Invention

The invention provides a framework device provided with an eddy current brake mechanism, aiming at solving the technical problems that the traditional framework device is limited by vehicle limitations and structural space, the bearing scheme of a hanging mode cannot be met below an axle box mechanism, only a bearing device with an excessively small size can be assembled, the requirement on structural strength cannot be met, and the running safety of a train is influenced.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a framework device provided with an eddy current braking mechanism comprises a framework, the eddy current braking mechanism and an axle box mechanism, wherein the eddy current braking mechanism is arranged on the framework, the framework comprises two side beams, two cross beams, two small longitudinal beams and two braking cross beams, the two side beams are welded with the end parts of the two cross beams, the two cross beams are welded with the two small longitudinal beams, and the two small longitudinal beams are welded with the two braking cross beams; the axle box mechanism is characterized by comprising an axle box rotating arm, an axle box rotating arm hoop, a corrugated pipe, a sealing gasket, an end cover, a lower base plate and a side base plate; a rotating arm rubber node at one end of a rotating arm of the axle box is fixedly connected to a side beam rotating arm positioning seat of the rail vehicle through a rotating arm rubber node fixing seat, the bottom of the other end of the rotating arm of the axle box is fixedly connected with the top of an axle box rotating arm hoop through a bolt, and a bearing is installed in the axle box rotating arm; the lower part of the axle box rotating arm hoop is provided with a rectangular bracket used for accommodating openings at two ends of a bearing arm of the eddy current brake mechanism, the opening direction of the rectangular bracket is vertical to the direction of a central shaft of a bearing in the axle box rotating arm, the lower backing plate is fixedly connected to the bottom of the inner side of the rectangular bracket, and the two side backing plates are symmetrically and fixedly connected to the two inner side walls of the rectangular bracket; one end of the corrugated pipe is fixedly connected with the end part of one side opening of the rectangular bracket, and the other end of the corrugated pipe is fixedly connected with the end part of one side of the carrying arm of the eddy current braking mechanism; the end cover is fixedly connected with the end part of the other side opening of the rectangular bracket through a bolt, and the sealing gasket is positioned between the rectangular bracket and the end cover.

The invention has the beneficial effects that: the framework device can meet the operating speed of a motor train unit at the speed of 350km/h, can realize the installation of the eddy current braking mechanism, has a simple framework structure, provides enough space for the installation and the use of the eddy current braking mechanism, has excellent manufacturability, is convenient to realize, and has enough structural strength allowance.

The axle box mechanism of the framework device is mainly a two-body axle box structure consisting of an axle box rotating arm and an axle box rotating arm hoop, and a rectangular bracket at the lower part of the axle box rotating arm hoop has enough space to support and position a bearing arm of the eddy current braking mechanism so as to solve the vertical bearing problem of the eddy current braking mechanism in a working state. Meanwhile, the bottom surface and the side vertical surface of the inner cavity of the rectangular bracket are buffered and limited by the non-metal abrasion base plates, so that the vertical impact of the bearing arm of the eddy current braking mechanism is relieved, and the transverse displacement of the eddy current braking mechanism is limited. Two ends of the rectangular bracket are respectively sealed in the form of a corrugated pipe and a sealing gasket, so that the sealing effect on the bearing arm of the eddy current braking mechanism is realized. The outer wall of the rectangular bracket is fixedly connected with the triangular rib plate, so that the structural strength requirement of the axle box device is met.

The framework device meets the requirements of axle boxes and eddy current brake functions and structural strength thereof, and realizes the bearing of an eddy current brake mechanism in a compact space.

Drawings

FIG. 1 is a perspective view of a frame assembly for mounting an eddy current braking mechanism according to the present invention.

FIG. 2 is an exploded view of the frame assembly of the eddy current braking mechanism of the present invention.

Fig. 3 is a perspective view of the frame of the present invention.

Fig. 4 is a schematic perspective view of the axlebox mechanism according to the present invention.

Fig. 5 is a perspective view of the axlebox mechanism according to another aspect of the present invention.

Fig. 6 is a schematic view showing a partially exploded structure of the axlebox mechanism according to the present invention.

Fig. 7 is a side view schematically showing the axle box mechanism of the present invention.

Fig. 8 is a schematic view of the structure of the gasket in the present invention.

Fig. 9 is a schematic view of the AA cross-sectional structure of fig. 8.

Fig. 10 is a partially enlarged structural view of a portion I in fig. 9.

Fig. 11 is a schematic structural view of a side member in the present invention.

Fig. 12 is a schematic structural view of a cross member in the present invention.

Fig. 13 is a schematic structural view of a small longitudinal beam in the present invention.

FIG. 14 is a schematic view of the application of the frame assembly of the present invention to which the eddy current braking mechanism is attached.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 14, the frame device of the eddy current brake mechanism of the present invention includes: the eddy current braking mechanism 5 is arranged on the framework, the framework comprises two side beams 1, two cross beams 2, two small longitudinal beams 3 and two braking cross beams 4, the two side beams 1 are welded with the end parts of the two cross beams 2, the two cross beams 2 are welded with the two small longitudinal beams 3, and the two small longitudinal beams 3 are welded with the two braking cross beams 4; the journal box mechanism 6 includes: the axle box rotating arm 61, the axle box rotating arm hoop 62, the bellows 63, the sealing gasket 64, the end cover 65, the lower cushion plate 66 and the side cushion plate 67; a rotating arm rubber node 611 at one end of the axle box rotating arm 61 is fixedly connected to an axle box rotating arm positioning installation seat 12 of the rail vehicle side beam 1 through a rotating arm rubber node fixing seat 612, the bottom of the other end of the axle box rotating arm 61 is fixedly connected with the top of the axle box rotating arm hoop 62 through a bolt 68, and a bearing is installed in the axle box rotating arm 61. The two-body structure formed by the axle box rotating arm 61 and the axle box rotating arm hoop 62 is convenient to disassemble and disassemble, and the wheel set assembly 7 can be replaced quickly.

The lower part of the axle box rotating arm hoop 62 is provided with a rectangular bracket 621 with openings at two ends for accommodating the bearing arm 51 of the eddy current brake mechanism 5, the opening direction of the rectangular bracket 621 is perpendicular to the central shaft direction of the bearing in the axle box rotating arm 61, the lower backing plate 66 is fixedly connected at the bottom of the inner side of the rectangular bracket 621, and the two side backing plates 67 are symmetrically fixedly connected on two inner side walls of the rectangular bracket 621. Rectangular bracket 621 is integral with pedestal yoke 62, allowing for compact construction in a limited space. When the eddy current brake mechanism is not in operation, the eddy current brake mechanism 5 is suspended below the frame, and the carrying arm 51 is suspended in the rectangular bracket 621. The outer side wall of the rectangular bracket 621 is fixedly connected with a triangular rib plate 69, so that the requirement on structural strength can be met. In order to relieve the vertical impact of the bearing arm 51 and limit the lateral displacement of the eddy current braking mechanism 5, a lower backing plate 66 and two side backing plates 67 are arranged on the bottom surface and two vertical surfaces of the inner cavity of the rectangular bracket 621 for buffering and limiting. The lower backing plate 66 and the side backing plate 67 are made of non-metal materials and have the functions of buffering and abrasion resistance. The lower pad 66 and the side pads 67 may be attached to the three surfaces by bolting, or may be attached to the three surfaces by bonding. When the vehicle is pneumatically controlled to enable the eddy current brake mechanism 5 to descend to the working position, the bearing arm 51 moves downwards and falls on the lower backing plate 66, and meanwhile, the transverse movement can be buffered and limited through the side backing plate 67.

One end of the corrugated pipe 63 is fixedly connected with the end part of one side opening of the rectangular bracket 621, and the other end of the corrugated pipe 63 is fixedly connected with the end part of one side of the carrying arm 51 of the eddy current braking mechanism 5; the end cover 65 is fixed on the other side opening end of the rectangular bracket 621 through bolts, and the sealing gasket 64 is tightly connected between the rectangular bracket 621 and the end cover 65 through a peripheral bolt. The gasket 64 is a rubber gasket, and in order to prevent the rubber of the gasket 64 from being compressed and deformed for a long time to affect the gasket connection performance, a rigid metal gasket 6411 is embedded at the connection position of each bolt through hole 641 on the periphery of the gasket 64, and is vulcanized on the rubber in a metal step gasket combination mode, and the sealing effect on the bearing arm 51 can be satisfied through the corrugated pipe 63, the gasket 64 and the end cover 65.

The side member 1 includes: the eddy current brake mechanism comprises interfaces such as a transmission rod seat 11, an axle box rotating arm positioning installation seat 12, an air spring installation seat 13, an anti-snaking shock absorber installation seat 14, a secondary vertical shock absorber installation seat 15, an anti-side-rolling torsion bar installation seat 16, an auxiliary device installation seat 17, a primary steel spring cap barrel 18 and a primary shock absorber installation seat 19, and can be installed with corresponding devices. The force transmission rod seat 11 of the eddy current brake mechanism below the side beam 1 is simple in structure, is welded to the lower cover plate of the side beam and is intersected with the rib plate inside the side beam in the vertical space, and the requirement of the side beam on the strength of the force transmission rod seat 11 of the eddy current brake mechanism is met. Besides the strength of the force transmission rod seat 11 of the eddy current brake mechanism meets the use requirement, an open space is provided for the installation and welding of the eddy current brake mechanism 5, and in addition, the position of the force transmission rod seat 11 of the eddy current brake mechanism is close to the longitudinal center of the bogie, so that no obvious deformation is generated after welding, and the operation and implementation are convenient.

The crossbeam 2 comprises a traction pull rod seat 21 and a vertical stop seat 22, and the traction pull rod seat 21 and the traction pull rod are installed at a node.

The small longitudinal beam 3 comprises an eddy current brake mechanism mounting seat 31, an eddy current brake mechanism proximity switch mounting plate 32, a secondary transverse damper seat 33 and a transverse buffer seat 34. The lower part of the eddy current braking mechanism mounting seat 31 is processed into a mounting plane, and the plane is provided with three mounting holes, so that the eddy current braking mechanism 5 can be connected to a framework through bolts by using the mounting holes to meet the mounting requirements of the eddy current braking mechanism 5. According to the illustration in fig. 3, the eddy current braking mechanism mounting seat 31 is welded with the steel pipes of the cross beam 2 and the braking cross beam 4, and forms a box-type integral structure with the inner and outer vertical plates on the small longitudinal beam 3, so that the eddy current braking mechanism mounting seat has enough strength allowance, and meets the mounting and using requirements of the eddy current braking mechanism 5. The box-type integral structure also provides sufficient space for installing and using the eddy current brake mechanism 5 from the space perspective, and ensures the safety of the eddy current brake mechanism 5 in use. In addition, the visibility and accessibility of the welding seam between the eddy current braking mechanism mounting seat 31 and the vertical plate are high, the implementation of a welding process is facilitated, and the reliability of the structure is improved.

The brake beam 4 mainly comprises a brake spider 41 for mounting a brake caliper arrangement.

The framework of the invention fixes the air bag suspension device of the eddy current brake mechanism 5 through 12 mounting holes of the eddy current brake mechanism mounting seat 31 on the small longitudinal beam 3, thereby realizing the vertical bearing of the eddy current brake mechanism 5; the force transmission rod seat 11 of the eddy current brake mechanism below the side beam 1 is connected with a force transmission rod of the eddy current brake mechanism 5 and is used for realizing the longitudinal constraint of the eddy current brake mechanism 5 and transmitting the braking force generated by the eddy current brake mechanism 5; meanwhile, the lower cover plate of the small longitudinal beam 3 also provides a mounting hole of the proximity switch of the eddy current brake mechanism.

The framework of the invention is simple in structure, and can combine the eddy current braking mechanism mounting seat 31, the cross beam 2 and the braking cross beam 4 to form a box-type structure, thereby ensuring the requirement of the overall structure strength, saving the space and avoiding the interference condition between the eddy current braking mechanism 5 and surrounding parts. The vortex brake mechanism force transmission rod seat 11 below the side beam 1 is simple in structure and is intersected with a rib plate inside the side beam 1 in a vertical space, and the strength requirement of the side beam 1 at the vortex brake mechanism force transmission rod seat 11 is guaranteed.

The framework device provided with the eddy current braking mechanism can meet the operating speed of a motor train unit at the speed of 350km/h, can realize the installation of the eddy current braking mechanism, has a simple framework structure, provides enough space for the installation and the use of the eddy current braking mechanism, has excellent manufacturability, is convenient to realize, and has enough strength allowance.

Claims

1. A frame device for installing an eddy current braking mechanism, comprising a frame, an eddy current braking mechanism (5) and an axle box mechanism (6), the eddy current braking mechanism (5) is mounted on the frame, and the frame includes two sides Beam (1), two beams (2), two small longitudinal beams (3) and two brake beams (4), two side beams (1) and two beams (2) end welded, two The beam (2) is welded with two small longitudinal beams (3), and the two small longitudinal beams (3) are welded with two braking beams (4); it is characterized in that the axle box mechanism (6) includes an axle box rotating arm (61), axle box turning arm hoop (62), bellows (63), gasket (64), end cover (65), lower backing plate (66) and side backing plate (67);

The turning arm rubber joint (611) at one end of the axle box turning arm (61) is fixedly connected to the axle box turning arm positioning mounting seat (12) of the frame side beam (1) through the turning arm rubber joint fixing seat (612). The bottom of the other end of the pivot arm (61) is fixedly connected with the top of the axle box pivot arm hoop (62) through bolts (68), and a bearing is installed in the axle box pivot arm (61); the lower part of the axle box pivot arm hoop (62) A rectangular bracket (621) with openings at both ends of the carrying arm (51) for accommodating the eddy current braking mechanism (5) is provided, the opening direction of the rectangular bracket (621) and the center of the bearing in the axle box arm (61) The axis direction is vertical, the lower backing plate (66) is fixed on the inner bottom of the rectangular bracket (621), and the two side backing plates (67) are symmetrically fixed on the two inner side walls of the rectangular bracket (621);

One end of the bellows (63) is fixedly connected to the open end of one side of the rectangular bracket (621), and the other end of the bellows (63) is fixedly connected to a position where the bearing arm (5-1) of the eddy current braking mechanism (5) is located. the end of the side;

The end cover (65) is fastened to the other open end of the rectangular bracket (621) by bolts, and the sealing gasket (64) is located between the rectangular bracket (621) and the end cover (65).

2 . The frame device for installing an eddy current braking mechanism according to claim 1 , wherein a triangular rib plate ( 69 ) is fixedly connected to the outer side wall of the rectangular bracket ( 621 ). 3 .

3 . The frame device for installing an eddy current braking mechanism according to claim 1 , wherein the lower backing plate ( 66 ) and the side backing plate ( 67 ) are both non-metallic backing plates. 4 .

4. The frame device for installing an eddy current braking mechanism according to claim 1, wherein the lower backing plate (66) and the side backing plate (67) are fixed on the rectangular Inside the bracket (621).

5 . The frame device for installing an eddy current braking mechanism according to claim 1 , wherein the sealing gasket ( 64 ) is a rubber gasket. 6 .

6 . The frame device for installing an eddy current braking mechanism according to claim 5 , wherein a circle of bolt through holes ( 641 ) are provided on the gasket ( 64 ), and the gasket ( 64 ) passes through the bolts. 7 . The hole (641) is connected with the end cover (65), and the periphery of each bolt through hole (641) is vulcanized to the rubber pad in the manner of combining metal step pads.

7. A frame device for installing an eddy current braking mechanism according to claim 1, wherein the side beam (1) comprises a power transmission rod seat (11) of the eddy current braking mechanism, an axle box rotating arm positioned and installed seat (12), empty spring mounting seat (13), anti-snake shock absorber mounting seat (14), secondary vertical shock absorber mounting seat (15), anti-roll torsion bar mounting seat (16), auxiliary devices The mounting seat (17), the first series steel spring cap cylinder (18) and the first series shock absorber mounting seat (19) are installed with the corresponding devices; the eddy current braking mechanism transmission rod seat (11) located under the side beam is welded to the lower cover plate of the side beam, and intersects with the inner rib plate of the side beam in the vertical space.

8. A frame device for installing an eddy current braking mechanism according to claim 1, wherein the beam (2) comprises a traction rod seat (21) and a vertical stop seat (22), the traction rod seat (21) Installed with the traction rod node.

9. A frame device for installing an eddy current braking mechanism according to claim 1, wherein the small longitudinal beam (3) comprises an eddy current braking mechanism mounting seat (31), an eddy current braking mechanism proximity switch installation The plate (32), the secondary transverse shock absorber seat (33) and the transverse buffer seat (34), wherein the lower part of the eddy current braking mechanism mounting seat (31) is processed into a mounting plane, and the plane has three mounting holes for The eddy current braking mechanism (5) is connected with the frame; the eddy current braking mechanism mounting seat (31) is welded with the beam (2) and the steel pipe of the braking beam (4), and is erected with the inner and outer sides of the small longitudinal beam (3). The panels form a box-shaped overall structure.

10 . The frame device for installing an eddy current braking mechanism according to claim 1 , wherein the brake beam ( 4 ) comprises a brake hanger ( 41 ) for installing a brake caliper device. 11 .