WO2020192032A1

WO2020192032A1 - End chassis structure for use in railway vehicle and railway vehicle

Info

Publication number: WO2020192032A1
Application number: PCT/CN2019/105329
Authority: WO
Inventors: 赵辉; 喻海洋; 韩月娇; 田洪雷; 刘延超
Original assignee: 中车青岛四方机车车辆股份有限公司
Priority date: 2019-03-28
Filing date: 2019-09-11
Publication date: 2020-10-01
Also published as: CN109969214A; AR117035A1

Abstract

An end chassis structure for use in a railway vehicle, comprising a traction beam (1) and a pair of upper support plates (4) respectively mounted on two sides of the traction beam (1) and a pair of lower support plates (5) arranged opposite to one another underneath the upper support plates (4), the side edges of the upper support plates (4) and the lower support plates (5) being fixedly connected to the side walls of the traction beam (1), the upper surface of the upper support plates (4) forming an upper support surface used for supporting a floor plate, and the lower surface of the lower support plates (5) forming a lower mounting face of a component interface. The structure of the upper support plates (4) and the lower support plates (5) replaces the previous cross beam structure for supporting a floor plate, increasing the support area, improving the bearing capacity, preventing the deformation caused by local stress concentration, and increasing overall strength and rigidity; the arrangement of the lower support plates (5) increases the interface area of the lower part of the chassis and increases the component mounting area, the position of the components being more rational and simple. Also comprising a railway vehicle provided with the end chassis structure.

Description

End underframe structure for rail vehicle and rail vehicle

Cross references to related applications

This application claims the priority of the Chinese patent application filed on March 28, 2019 with the application number 201910245905.8 and the title of the invention "End Underframe Structure for Rail Vehicles and Rail Vehicles", which are fully incorporated into this disclosure by reference .

Technical field

The present disclosure relates to the technical field of rail vehicle underframes, in particular to an end underframe structure for rail vehicles and rail vehicles.

Background technique

The current rail vehicle end underframe is provided with multiple spaced beams on both sides of the traction beam. The floor is laid on the beam, and the beam supports the floor. However, the floor slab bears the vertical load and exerts force on the beam. At this time, due to the small contact area between the floor and the crossbeam, it is prone to deformation due to local stress concentration, which limits the bearing capacity of the rail vehicle end underframe to a certain extent.

Summary of the invention

(1) Technical problems to be solved

The present disclosure aims to solve at least one of the technical problems existing in the prior art or related technologies.

The purpose of the present disclosure is to provide an end underframe structure for rail vehicles and a rail vehicle to solve the problem that the contact area between the floor and the beam is small, and the deformation caused by the local stress concentration is prone to cause the end underframe of the rail vehicle to bear Ability is subject to certain restrictions.

(2) Technical solution

In order to solve the above technical problems, the embodiments of the present disclosure provide an end underframe structure for rail vehicles, including a traction beam, and a pair of upper support plates respectively installed on both sides of the traction beam and oppositely disposed on the pair A pair of lower support plates below the upper support plate, the sides of the upper support plate and the lower support plate are both fixedly connected to the side walls of the traction beam, and the upper surface of the upper support plate forms an upper surface for supporting the floor. The supporting surface, the lower surface of the lower supporting plate forms the lower mounting surface of the component interface.

In an embodiment of the present disclosure, the traction beam includes a pair of vertical side plates arranged at intervals and a plurality of connecting ribs connected between the inner sides of the pair of vertical side plates; the pair of upper support plates, one The lower supporting plates are respectively connected vertically to the outer sides of the pair of vertical side plates.

In the embodiment of the present disclosure, the upper and lower sides of a pair of the vertical side plates are respectively provided with flanges that are horizontally bent outward, and the upper support plate and the upper side of the vertical side plates are respectively provided with flanges. Butt joint; the lower support plate is vertically butt jointed between the upper flange and the lower flange of the vertical side plate.

In the embodiment of the present disclosure, each of the upper support plates and the lower support plates located below are connected by reinforcing rib plates.

In an embodiment of the present disclosure, the upper support plate and the lower support plate located below the upper support plate and the lower support plate are provided with an escape opening that penetrates up and down, and the stiffener plate is arranged around the escape opening.

In the embodiment of the present disclosure, the stiffener plate is welded and connected to the upper support plate and the corresponding lower support plate, respectively, and the shape of the escape opening is adapted to the contour shape of the component to be avoided.

In the embodiment of the present disclosure, it further includes a buffer beam and a corbel connected to both ends of the traction beam in the longitudinal direction, and the buffer beam and the corbel are connected to the traction beam to form an I-shaped structure; the upper support The length of the plate and the lower support plate is consistent with the length of the traction beam, and the two ends of the upper support plate and the lower support plate are respectively connected with the buffer beam and the corbel beam.

In the embodiment of the present disclosure, the outward extension width of the upper support plate and the lower support plate does not exceed the outside of the buffer beam and the corbel beam.

In the embodiment of the present disclosure, the upper support plate and the corresponding lower support plate are also provided with a line passing opening that penetrates up and down near the buffer beam, and there is a gap between the line passing opening and the avoiding opening. There are spacing.

The embodiments of the present disclosure also provide a rail vehicle, including a floor and the aforementioned end underframe structure for rail vehicles, the floor being laid on the upper supporting surface of the upper supporting plate.

(3) Beneficial effects

Compared with the prior art, the present disclosure has the following advantages:

The present disclosure provides an end underframe structure for rail vehicles, by replacing the cross beams on both sides of the traction beam with a pair of upper support plates respectively installed on both sides of the traction beam and oppositely arranged on the pair of upper supports A pair of lower support plates below the plate, the sides of the upper support plate and the lower support plate are both fixedly connected to the side walls of the traction beam, and the upper surface of the upper support plate forms an upper support surface for supporting the floor , The lower surface of the lower support plate forms the lower installation surface of the component interface; the structure of the upper support plate and the lower support plate replaces the previous beam structure to support the floor, which greatly increases the support area, greatly improves the bearing capacity, and pressure When acting on the support plate, the force-receiving area is larger, which disperses the force, avoids deformation caused by local stress concentration, and increases the overall strength and rigidity; the lower surface of the lower support plate forms the lower installation of the component interface The setting of the lower support plate increases the interface area at the lower part of the chassis, so that the installation area of the parts is increased, and the location of the parts is more reasonable and simple.

Description of the drawings

Fig. 1 is a perspective schematic view of an end underframe structure for a rail vehicle according to an embodiment of the disclosure;

2 is a perspective schematic view of another end underframe structure for rail vehicles according to an embodiment of the disclosure;

3 is a perspective schematic view of another end underframe structure for rail vehicles according to an embodiment of the disclosure;

In the figure: 1: Traction beam; 11: Vertical side plate; 111: Flanging; 12: Connecting rib; 2: Corbel beam; 3: Buffer beam; 4: Upper support plate; 5: Lower support plate; 6: Avoidance Mouth; 7: cable crossing; 8: stiffener plate.

detailed description

The specific embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present disclosure, but are not used to limit the scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying The description does not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure.

In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be interpreted broadly. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood according to the specific circumstances.

In addition, in the description of the present disclosure, unless otherwise specified, "plurality", "multiple roots", and "multiple groups" mean two or more.

After the end underframe of the rail vehicle is installed on the car body, its upper surface is used for laying the floor.

As shown in Figures 1-3, an end underframe structure for rail vehicles provided by an embodiment of the present disclosure includes a traction beam 1, and a pair of

upper support plates

4 and 4 respectively installed on both sides of the traction beam 1. A pair of lower support plates 5 are arranged opposite to the pair of upper support plates 4, that is, a pair of upper support plates 4 are respectively located on both sides of the traction beam 1, and a pair of lower support plates 5 are also respectively located on the traction beam On both sides of 1, the lower support plate 5 on the same side of the traction beam 1 is located below the upper support plate 4 with a gap between the two. The sides of the upper support plate 4 and the lower support plate 5 are both The side walls of the traction beam 1 can be fixedly connected by welding, for example, so that the upper support plate 4, the lower support plate 5, and the traction beam 1 are connected to form an integral structure. In this embodiment, the upper support plate 4 and the lower support The plates 5 are in the shape of a flat plate. The planes of the upper support plate 4 and the lower support plate 5 extend horizontally outward along both sides of the traction beam 1. The upper surface of the upper support plate 4 forms an upper surface for supporting the floor. On the supporting surface, the structure of the upper supporting plate 4 and the lower supporting plate 5 replaces the previous beam structure to support the floor, which greatly increases the supporting area and the bearing capacity, and when the pressure is applied to the supporting plate, the force bearing area is larger. Furthermore, the force is dispersed to avoid deformation caused by local stress concentration, and the overall strength and rigidity are increased; the lower surface of the lower support plate 5 forms the lower mounting surface of the component interface, and the arrangement of the lower support plate 5 increases the chassis The interface area at the lower part increases the installation area of parts and makes the placement of parts more reasonable and simple.

In the embodiment of the present disclosure, specifically, the traction beam 1 includes a pair of elongated vertical side plates 11 arranged at intervals and a plurality of connecting ribs connected between the inner sides of the pair of vertical side plates 11 12. The connecting ribs 12 are vertically connected between the pair of vertical side plates 11, and can be welded to the pair of vertical side plates 11 respectively, and the connecting ribs 12 connect the vertical side plates 11 on both sides into one body , The strength of the traction beam 1 is strengthened; the pair of upper support plates 4 and the pair of lower support plates 5 are respectively connected vertically to the outside of the pair of vertical side plates 11, which can be connected by welding to ensure the connection strength.

Further, as shown in FIG. 1, the upper and lower sides of a pair of the vertical side plates 11 are respectively provided with flanges 111 that are horizontally bent outward, and the upper support plate 4 and the upper side of the vertical side plate 11 The flange 111 is butt welded, that is, one side of the upper support plate 4 is aligned with the side of the upper flange 111 and then welded, so that a pair of upper support plates 4 and the upper surface of the traction beam 1 are kept on the same plane, which is convenient for the floor. Laying; After the position of the upper support plate 4 is determined, the installation position of the lower support plate 5 is determined by the distance between the upper support plate 4 and the lower support plate 5, and the height of the installation position of the installation structure under the lower support plate 5 should be considered Preferably, the lower support plate 5 is vertically butted between the upper flange 111 and the lower flange 111 of the vertical side plate 11.

In the embodiment of the present disclosure, each of the upper support plates 4 and the lower support plates 5 located below are connected by a reinforcing rib plate 8, thereby connecting the upper support plate 4 and the lower support plate 5 on the same side As a whole to increase the overall strength and rigidity, the stiffener plate 8 is vertically connected between the upper support plate 4 and the lower support plate 5. The upper and lower support plates 5 and the reinforcing ribs 8 between the two increase the bearing area of the underframe, disperse the force, eliminate stress concentration and other problems, improve the overall bearing capacity of the car body, and increase the end of the underframe. Service life.

In the embodiment of the present disclosure, the upper support plate 4 and the lower support plate 5 located below are provided with an escape port 6 that penetrates up and down, so as to reserve space for the bogie installed under the underframe and avoid Interference with the wheel-set structure of the bogie. For the upper support plate 4, the area except the escape opening 6 is the supporting surface of the floor, and for the lower support plate 5, the area except the escape opening 6 is the part interface. Installation area, because the mounting surface of the lower support plate 5 except for the escape opening 6 is continuous and large, the position of the component interface can be flexibly adjusted, which is convenient for operation. The stiffener plate 8 is arranged around the escape opening 6 , Does not affect the setting position of the escape port 6 and has better concealment, and does not occupy additional space of the underframe.

In the embodiment of the present disclosure, in order to ensure the connection strength, the stiffener plate 8 is welded and connected to the upper support plate 4 and the corresponding lower support plate 5, respectively, and the peripheral side of the escape opening 6 is formed by a transition arc, Avoid local stress concentration. In addition, the shape of the avoidance opening 6 is adapted to the contour shape of the component to be avoided, so as to maximize the saving of the effective area of the upper support plate 4 and the lower support plate 5, that is, ensure the upper support plate 4 and the lower support The effective area of the board 5 is maximized, thereby providing the largest support area for the floor, facilitating the distribution of forces and avoiding stress concentration; in addition, the setting of the avoidance opening 6 helps to reduce the weight of the end chassis.

In the embodiment of the present disclosure, as shown in FIGS. 1-3, it further includes a bumper beam 3 and a corbel 2 respectively connected to the longitudinal ends of the traction beam 1. The length of the bumper beam 3 and the corbel 2 and the traction beam The length of the beam 1 is vertical, so that the bumper beam 3 and the bolster beam 2 are connected to the traction beam 1 to form an I-shaped structure; of the pair of upper support plates 4 and the pair of lower support plates 5, one upper support plate 4 It forms a group with a lower support plate 5, forming two groups which are respectively arranged at the notch positions on both sides of the I-shaped structure. The length of the upper support plate 4 and the lower support plate 5 is consistent with the length of the traction beam 1. , And the two ends of the upper support plate 4 and the lower support plate 5 are respectively connected to the buffer beam 3 and the corbel 2 by welding, so that the traction beam 1, the buffer beam 3, the corbel 2 and the upper support plate 4 , The lower support plates 5 are reliably welded to each other to increase the overall structural strength and meet the requirements of the end chassis; in addition, the width of the upper support plate 4 and the lower support plate 5 extending outward does not exceed the buffer beam 3 and the outer side of the bolster 2 to form an underframe structure whose overall width matches the width of the car body.

In the embodiment of the present disclosure, the upper support plate 4 and the corresponding lower support plate 5 are also provided with a wire passing opening 7 which penetrates up and down near the buffer beam 3, and the wire passing opening 7 is connected to the There is a space between the avoidance openings 6, and the setting of the crossing opening 7 can facilitate the crossing of the underframe, such as the bogie, to pass through the crossing opening 7 and lead into the car, and the crossing opening 7 also helps to further reduce The weight of the end chassis.

The embodiment of the present disclosure also provides a rail vehicle, including a floor and the aforementioned end underframe structure for rail vehicles, the floor is laid on the upper support surface of the upper support plate, and the floor is installed In-vehicle equipment such as door, etc., due to the large support area of the end underframe provided with upper and lower support plates, the force is dispersed, which can effectively avoid the collapse of the door connection due to stress concentration and deformation. The end underframe of the present disclosure can withstand the tensile and compressive force from the coupler, the traction force and the impact force from the bogie, etc.

It can be seen from the above embodiments that the embodiment of the present disclosure supports the floor by replacing the previous beam structure with the structure of the upper support plate and the lower support plate, which greatly increases the support area and the bearing capacity, and when pressure acts on the support plate , The force area is larger, and the force is dispersed to avoid deformation caused by local stress concentration, increasing the overall strength and rigidity; the lower surface of the lower support plate forms the lower mounting surface of the component interface, and the lower support plate The setting increases the interface area at the lower part of the chassis, thereby increasing the installation area of the parts, and the location of the parts is more reasonable and simple.

The above are only the preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the disclosure Within the scope of protection.

Claims

An end underframe structure for rail vehicles, including a traction beam, is characterized in that it also includes a pair of upper support plates respectively installed on both sides of the traction beam and a pair of upper support plates oppositely arranged below the pair of upper support plates For the lower support plate, the sides of the upper support plate and the lower support plate are fixedly connected with the side walls of the traction beam, and the upper surface of the upper support plate forms an upper support surface for supporting the floor. The lower surface of the support plate forms the lower mounting surface of the component interface.
The rail vehicle end underframe structure according to claim 1, wherein the traction beam comprises a pair of vertical side plates arranged at intervals, and a pair of vertical side plates connected between the inner sides of the vertical side plates. A connecting rib; the pair of upper support plates and a pair of lower support plates are respectively vertically connected to the outside of the pair of vertical side plates.
The end underframe structure for rail vehicles according to claim 2, wherein the upper and lower sides of the pair of vertical side plates are respectively provided with flanges that are horizontally bent outward, and the upper support plate and The upper side of the vertical side plate is butted with the flanging; the lower support plate is vertically butted between the upper and lower flanging of the vertical side plate.
The end underframe structure for rail vehicles according to claim 1, wherein each of the upper support plates and the lower support plates located below are connected by reinforcing rib plates.
The rail vehicle end underframe structure according to claim 4, wherein the upper support plate and the lower support plate located below the upper support plate are provided with escape openings penetrating up and down, and the reinforcing ribs surround Set up around the escape.
The rail vehicle end underframe structure according to claim 5, wherein the stiffener plate is welded and connected to the upper support plate and the corresponding lower support plate, and the shape of the escape opening is The contour shape of the parts to be avoided is adapted.
The end underframe structure for rail vehicles according to claim 6, further comprising a buffer beam and a corbel connected to both ends of the traction beam in the longitudinal direction, and the buffer beam and corbel are connected to the The traction beam is connected to form an I-shaped structure; the length of the upper support plate and the lower support plate is consistent with the length of the traction beam, and both ends of the upper support plate and the lower support plate are connected to the buffer beam and Corbel connection.
The end underframe structure for rail vehicles according to claim 7, wherein the outward extension width of the upper support plate and the lower support plate does not exceed the outside of the bumper beam and the bolster beam.
The end underframe structure for rail vehicles according to claim 7, characterized in that the upper support plate and the corresponding lower support plate are further provided with a line passing through up and down near the buffer beam, There is a gap between the wire crossing opening and the avoiding opening.
A rail vehicle, comprising a floor, characterized in that it further comprises the rail vehicle end underframe structure according to any one of claims 1-9, the floor being laid on the upper supporting surface of the upper supporting plate .