阅读说明：本技术 用于轨道车辆的转向架和具有其的轨道车辆 (Bogie for railway vehicle and railway vehicle with same ) 是由 钟广辉 奉起华 熊辉 李思 杨春庆 于 2020-03-27 设计创作，主要内容包括：本发明公开了一种用于轨道车辆的转向架和具有其的轨道车辆,转向架包括：构架和安装座,构架包括安装梁,安装梁为箱型结构,且安装梁上具有缺口,安装座具有连接部,连接部填补缺口且与缺口的边沿对焊连接。根据本发明的用于轨道车辆的转向架,通过在安装梁上设置可以被连接部填补的缺口,从而可以将安装座的连接部作为安装梁的组成部分与安装梁对焊连接,进而可以保证焊缝的受力为拉压力、而非剪切力,因此提高了焊缝的连接可靠性,降低了安装座从构架上脱落的风险,提高了轨道车辆的行驶安全性。另外,由于安装座的连接部作为箱型结构的安装梁的组成部分,从而可以降低转向架的整体重量和成本。(The invention discloses a bogie for a railway vehicle and a railway vehicle with the same, wherein the bogie comprises: framework and mount pad, framework include the installation roof beam, and the installation roof beam is the box structure, and has the breach on the installation roof beam, and the mount pad has connecting portion, and connecting portion fill the breach and with the border butt welding of breach be connected. According to the bogie for the railway vehicle, the connecting part of the mounting seat can be used as a component of the mounting beam to be in butt welding connection with the mounting beam by arranging the notch which can be filled by the connecting part on the mounting beam, so that the stress of the welding line is tension pressure instead of shearing force, the connection reliability of the welding line is improved, the risk that the mounting seat falls off from a framework is reduced, and the running safety of the railway vehicle is improved. In addition, the connecting part of the mounting seat is used as a component of a mounting beam of a box-type structure, so that the overall weight and the cost of the bogie can be reduced.)

1. A bogie for a railway vehicle, comprising:

the frame comprises a mounting beam, the mounting beam is of a box-type structure, and a gap is formed in the mounting beam; and

the mounting seat is provided with a connecting part, and the connecting part fills the gap and is in butt welding connection with the edge of the gap.

2. The bogie for railway vehicles according to claim 1, wherein the mounting beam comprises a first beam panel, a second beam panel, a third beam panel and a fourth beam panel, the first beam panel and the second beam panel being spaced apart in a first direction, the third beam panel and the fourth beam panel being spaced apart in a second direction, the third beam panel and the fourth beam panel being located on both sides of the first beam panel and the second beam panel in the second direction, respectively, such that the mounting beam is of the box-type structure.

3. The bogie for railway vehicles according to claim 2, wherein the notch comprises a first notch formed in the first beam panel, and the connecting portion comprises a first plate portion filling the first notch, an edge of the first plate portion being butt welded to an edge of the first notch defined by the first beam panel.

4. The bogie according to claim 3, wherein the first notch extends through the first beam plate in the second direction in a direction toward the third beam plate, and a partial edge of the third beam plate extends to the first notch and is butt-welded to a side surface of the first plate portion facing the second beam plate.

5. The bogie for railway vehicles according to claim 4, wherein a side surface of the first plate portion facing the second beam plate is of a planar structure, and a thickness of an edge of the first plate portion is the same as a thickness of the first beam plate.

6. The bogie for railway vehicles according to claim 3, wherein the first plate portion has lightening holes thereon.

7. The bogie according to claim 3, wherein the first notches are provided in a plurality and spaced apart along the length extension of the first beam, and one of the mounting seats is butt welded to each of the first notches.

8. The bogie for railway vehicles according to any one of claims 3 to 7, wherein the mounting seat further has a mounting portion having a dimension smaller than that of the first plate portion in a length extending direction of the first beam plate, and a side surface of the first plate portion remote from the second beam plate is smoothly transitionally connected with the mounting portion by a smooth curved surface.

9. The bogie for railway vehicles according to claim 3, wherein the first notch penetrates the first beam plate in the second direction toward the third beam plate, the notch comprises a second notch formed in the third beam plate, the second notch penetrates the third beam plate in the first direction toward the first beam plate, and the second notch communicates with the first notch, the connecting portion further comprises a second plate portion filling the second notch, and an edge of the second plate portion is butt-welded to an edge of the second notch defined by the third beam plate.

10. The bogie for railway vehicles according to claim 1, wherein the butt weld connection is a full penetration butt weld connection.

11. A rail vehicle comprising a vehicle body and a bogie mounted to the vehicle body and being a bogie as claimed in any one of claims 1 to 10.

Technical Field

The invention relates to the technical field of rail transit, in particular to a bogie for a rail vehicle and the rail vehicle with the bogie.

Background

Railway vehicle's among the correlation technique bogie, including framework and leading wheel mount pad, the leading wheel mount pad welds in the framework, and railway vehicle is at the in-process of turning, and the leading wheel can be atress and transmits the leading wheel mount pad for, and the leading wheel mount pad passes through the welding seam again with guide torque and transmits the framework for, if the welding seam quality is not too close, then has the risk that the leading wheel mount pad drops from the framework, influences railway vehicle's the safety of traveling.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, the invention proposes a bogie for a rail vehicle which guarantees the reliability of the connection of the mounting seat to the frame and reduces the weight and cost of the bogie.

The invention also provides a railway vehicle with the bogie.

A bogie for a railway vehicle according to an embodiment of the first aspect of the invention comprises: the frame comprises a mounting beam, the mounting beam is of a box-type structure, and a gap is formed in the mounting beam; and the mounting seat is provided with a connecting part, and the connecting part fills the gap and is in butt welding connection with the edge of the gap.

According to the bogie for the railway vehicle, which is disclosed by the embodiment of the first aspect of the invention, the connecting part of the mounting seat can be used as a component of the mounting beam to be in butt welding connection with the mounting beam by arranging the notch which can be filled by the connecting part on the mounting beam, so that the stress of the welding line can be ensured to be tensile pressure instead of shearing force, the connection reliability of the welding line is improved, the risk that the mounting seat falls off from a framework is reduced, and the running safety of the railway vehicle is improved. In addition, the connecting part of the mounting seat is used as a component of a mounting beam of a box-type structure, so that the overall weight and the cost of the bogie can be reduced.

In some embodiments, the mounting beam comprises a first beam plate, a second beam plate, a third beam plate and a fourth beam plate, the first beam plate and the second beam plate are spaced apart along a first direction, the third beam plate and the fourth beam plate are spaced apart along a second direction, and the third beam plate and the fourth beam plate are respectively located on two sides of the first beam plate and the second beam plate in the second direction, so that the mounting beam is the box-type structure.

In some embodiments, the notch includes a first notch formed in the first beam panel, and the connecting portion includes a first plate portion filling the first notch, and an edge of the first plate portion is butt-welded to an edge of the first notch defined by the first beam panel.

In some embodiments, the first notch penetrates the first beam plate in the second direction toward the third beam plate, and a partial edge of the third beam plate extends to the first notch and is connected to a side surface of the first plate portion facing the second beam plate in a butt welding manner.

In some embodiments, a side surface of the first plate portion facing the second beam plate is a planar structure, and a thickness of an edge of the first plate portion is the same as a thickness of the first beam plate.

In some embodiments, the first plate portion has a lightening hole thereon.

In some embodiments, the first notches are multiple and spaced apart along the length extension direction of the first beam plate, and each first notch is butt-welded with one mounting seat.

In some embodiments, the mounting seat further has a mounting portion, in the length extending direction of the first beam plate, the size of the mounting portion is smaller than that of the first plate portion, and a side surface of the first plate portion, which is far away from the second beam plate, is in smooth transition connection with the mounting portion through a smooth curved surface.

In some embodiments, the first notch penetrates the first beam plate in the second direction and in a direction toward the third beam plate, the notch includes a second notch formed in the third beam plate, the second notch penetrates the third beam plate in the first direction and in a direction toward the first beam plate, and the second notch communicates with the first notch, the connecting portion further includes a second plate portion filling the second notch, and an edge of the second plate portion is in butt-welding connection with an edge of the second notch defined by the third beam plate.

In some embodiments, the butt weld connection is a full penetration butt weld connection.

A rail vehicle according to an embodiment of the second aspect of the invention comprises a vehicle body and a bogie mounted to the vehicle body and being a bogie according to an embodiment of the first aspect of the invention.

According to the railway vehicle provided by the embodiment of the second aspect of the invention, the bogie of the embodiment of the first aspect is arranged, so that the running safety of the railway vehicle is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is an assembly view of portions of the components of a truck according to one embodiment of the present invention;

FIG. 2 is a cross-sectional view of the truck shown in FIG. 1, with the mounting bracket on the left side in an unassembled condition;

FIG. 3 is an enlarged view of section A shown in FIG. 2;

FIG. 4 is a front view of the truck shown in FIG. 1, with the right side mount in an unassembled condition;

FIG. 5 is a perspective view of the mount shown in FIG. 1;

FIG. 6 is another perspective view of the mount shown in FIG. 5;

FIG. 7 is a partial cross-sectional view at a mounting beam of a frame according to another embodiment of the present invention;

FIG. 8 is a schematic view of a first beam panel and a third beam panel of the mounting beam shown in FIG. 7;

FIG. 9 is an assembled cross-sectional view of the mounting beam and mount shown in FIG. 7;

FIG. 10 is a schematic illustration of a rail vehicle according to one embodiment of the present invention.

Reference numerals:

the rail vehicle 1000:

a bogie 100; a first direction F1; a second direction F2; a third direction F3;

a frame 1;

a mounting beam 11; a notch 10; a first notch 101; a second notch 102;

a first beam panel 111; a second beam panel 112; a third beam plate 113; local edge 1131; a fourth beam panel 114;

a mounting base 2;

a connecting portion 21; a first plate portion 211; an edge 2110; lightening holes 2111; a second plate portion 212;

a mounting portion 22; a mounting hole 221; a curved surface 23;

butt welding of the weld 3; a first weld 31; a second weld 32; a third weld seam 33;

a horizontal wheel 4;

a vehicle body 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Railway vehicle's among the correlation technique bogie, including framework and leading wheel mount pad, the leading wheel mount pad welds in the framework, and railway vehicle is at the in-process of turning, and the leading wheel can be atress and transmits the leading wheel mount pad for, and the leading wheel mount pad passes through the welding seam again with guide torque and transmits the framework for, if the welding seam quality is not too close, then has the risk that the leading wheel mount pad drops from the framework, influences railway vehicle's the safety of traveling.

In view of the above technical problems, the applicant has creatively found that the specific connection mode of the frame and the guide wheel mounting seat in the related art is as follows: the leading wheel mount pad is through the cooperation of the face-to-face tight mode of pasting with the roof beam face of framework, and adopt the fillet weld form to connect, guide torque that the leading wheel mount pad bore passes through the fillet weld and transmits to the framework on, the fillet weld atress is the shearing force this moment, however, important atress part should avoid the fillet weld as far as possible to receive the shearing force, consequently, the requirement for quality of diagonal weld is very high, but, to the fillet weld, internal defect can't use conventional ultrasonic inspection to detect, thereby can't know whether the welding seam quality satisfies the in-service use demand, consequently, can't guarantee the reliability of framework betterly. In view of the above, the present application proposes a bogie for a railway vehicle and a railway vehicle having the same that can solve at least one of the above technical problems.

Next, referring to the drawings, a bogie 100 for a railway vehicle 1000 according to an embodiment of the present invention will be described.

As shown in fig. 1, the bogie 100 includes: framework 1 and mount pad 2, framework 1 include installation roof beam 11, combine fig. 2 and fig. 3, and installation roof beam 11 is the box structure, and has breach 10 on the installation roof beam 11, and mount pad 2 has connecting portion 21, and connecting portion 21 fills breach 10 and is connected with the border butt welding of breach 10.

Therefore, in the bogie 100 according to the embodiment of the present invention, the notch 10 capable of being filled by the connecting portion 21 of the mount 2 is provided on the mounting beam 11, so that the connecting portion 21 of the mount 2 can be butt-welded to the mounting beam 11 as a component of the mounting beam 11 having a box-shaped structure, and the weld at the welding position is the butt-welded weld 3, and it can be ensured that the stress of the weld is a tensile force or a compressive force rather than a shearing force during the turning of the rail vehicle 1000, thereby improving the connection reliability of the weld, reducing the risk of the mount 2 falling off from the frame 1, and improving the driving safety of the rail vehicle 1000. In addition, since the connecting portion 21 of the mount base 2 is formed as an integral part of the mounting beam 11 of the box-type structure, the weight of the mounting beam 11 can be reduced, and the overall weight and cost of the bogie 100 can be reduced.

In addition, in some embodiments of the present invention, as shown in fig. 2 and fig. 3, the butt welding connection between the connecting portion 21 and the notch 10 may be a full penetration butt welding connection, so that the obtained butt welding seam 3 may be a full penetration butt welding seam, and further, the quality of the butt welding seam 3 may be effectively detected by using an ultrasonic flaw detection device, so as to ensure that the quality of the butt welding seam 3 meets requirements, and further ensure the connection reliability between the mounting base 2 and the framework 1.

In the embodiment of the present invention, the extending direction of the mounting beam 11 is not limited, and may be, for example, a cross beam extending in the width direction of the track vehicle 1000, or a side beam extending in the longitudinal direction of the track vehicle 1000. In addition, the specific structure of the mounting beam 11 having the box-shaped structure is not limited as long as the mounting beam 11 has a hollow structure formed by splicing a plurality of beam plates, so as to reduce the weight and cost of the bogie 100 and ensure the structural reliability of the mounting beam 11.

For example, in the example shown in fig. 3, the mounting beam 11 may include a first beam plate 111, a second beam plate 112, a third beam plate 113 and a fourth beam plate 114, the first beam plate 111 and the second beam plate 112 are spaced apart along a first direction F1, the third beam plate 113 and the fourth beam plate 114 are spaced apart along a second direction F2, and the third beam plate 113 and the fourth beam plate 114 are respectively located at both sides of the first beam plate 111 and the second beam plate 112 in the second direction F2, so that the mounting beam 11 has a box-shaped structure. Therefore, the installation beam 11 has a simple structure, and is convenient to process and manufacture, and it should be noted that every two adjacent beam plates of the first beam plate 111, the second beam plate 112, the third beam plate 113 and the fourth beam plate 114 can be butt-welded, so that the stress of the welding seam is ensured to be tensile force or pressure force rather than shearing force, the connection reliability of the welding seam is improved, and the reliability of the installation beam 11 is improved.

It is understood that the first direction F1 and the second direction F2 form a non-zero angle, such as a right angle, an obtuse angle, an acute angle, etc. In addition, in some embodiments of the present invention, the extending directions of the four beams, i.e., the first beam 111, the second beam 112, the third beam 113 and the fourth beam 114, may be the same, and for example, may all extend along the third direction F3, but the beam is not required to be a flat plate, and the third direction F3 is perpendicular to the first direction F1 and the second direction F2 (as shown in fig. 1 and 4). For example, in one specific example of the present invention, the first direction F1, the second direction F2, and the third direction F3 are perpendicular to each other two by two. In addition, it should be noted that the thicknesses of the first beam plate 111, the second beam plate 112, the third beam plate 113, and the fourth beam plate 114 are not limited, and may be the same or different, and the thickness of each beam plate may be specifically calculated according to the force analysis of the bogie 100.

In some embodiments of the present invention, as shown in fig. 4, the notch 10 includes a first notch 101 formed on the first beam plate 111, the connecting portion 21 includes a first plate portion 211 filling the first notch 101, and an edge of the first plate portion 211 is butt-welded to an edge of the first notch 101 defined by the first beam plate 111, such as to obtain a first weld 31 shown in fig. 3 and 4. Therefore, welding is facilitated, and the structure of the mounting base 2 can be simplified.

As shown in fig. 3 and 4, in an example of the present invention, the first notch 101 may penetrate the first beam plate 111 in the second direction F2 in a direction toward the third beam plate 113, a partial edge 1131 of the third beam plate 113 extends to the first notch 101, and is butt-welded to a side surface of the first plate portion 211 facing the second beam plate 112, for example, the second welding seam 32 shown in fig. 3 may be obtained. From this, convenient welding, and be convenient for obtain the full penetration welding seam here to can use conventional ultrasonic inspection equipment to detect, guarantee the welding seam quality.

It should be noted that the shape of the first notch 101 is not limited as long as butt welding is facilitated, for example, in the specific example shown in fig. 4, when the first notch 101 penetrates the first beam plate 111 in the direction toward the third beam plate 113 in the second direction F2, the edge of the first notch 101 defined by the first beam plate 111 may be in a rectangular shape lacking a bottom edge as shown in fig. 4, so as to facilitate welding to obtain the first weld 31 shown in fig. 4. It is understood that, in order to ensure that the first beam plate 111 is a one-piece beam plate, when the first notch 101 penetrates the first beam plate 111 in the direction toward the third beam plate 113 in the second direction F2, the first notch 101 does not penetrate the first beam plate 111 in the direction toward the fourth beam plate 114 in the second direction F2.

In addition, it should be noted that the distribution and number of the first notches 101 are not limited as long as the use requirement of the bogie 100 is met, for example, in the specific example shown in fig. 4, the first notches 101 are multiple and spaced apart along the length extension direction of the first beam plate 111 (for example, the third direction F3 shown in fig. 4), and one mounting seat 2 is butt-welded at each first notch 101. Thus, a plurality of mounting seats 2 can be mounted by one mounting beam 11, thereby meeting the use requirements of the bogie 100.

As shown in fig. 3 and 5, in some embodiments of the present invention, a side surface of the first plate portion 211 facing the second beam plate 112 is a planar structure, so that the processing is convenient, and the structure of the mounting base 2 can be simplified, so that the mounting base 2 meets the requirement of light weight. In addition, in some embodiments, with reference to fig. 5, the first plate portion 211 may have lightening holes 2111, so that the mount base 2 may further meet the requirement of light weight on the premise of meeting the requirement of butt welding, and it should be noted that the size and distribution position of the lightening holes 2111 are not limited as long as the butt welding connection is not affected. Referring to fig. 3 and 6, in some embodiments, the thickness of the edge 2110 of the first plate portion 211 is the same as the thickness of the first beam plate 111, so that the butt welding requirement can be satisfied, and the light weight requirement of the mount 2 can be satisfied.

In some embodiments of the present invention, as shown in fig. 6, the mounting base 2 further has a mounting portion 22, the mounting portion 22 is used for mounting, for example, a horizontal wheel 4 (as shown in fig. 10) is mounted, for example, the mounting portion 22 may have a mounting hole 221 thereon, and an axle of the horizontal wheel 4 is fastened to the mounting portion 22 by a bolt passing through the mounting hole 221.

In some embodiments of the present invention, as shown in fig. 4 and 6, in the length extending direction of the first beam panel 111 (the third direction F3 shown in fig. 4), the dimension W2 of the mounting portion 22 is smaller than the dimension W1 of the first plate portion 211, and the surface of the first plate portion 211 on the side away from the second beam panel 112 and the mounting portion 22 are smoothly transitionally connected by the smooth curved surface 23 (e.g., the large fillet curved surface 23).

That is to say, the mounting seat 2 is configured to be horn-shaped and smoothly transited from the mounting portion 22 to the first plate portion 211, since the edge of the first plate portion 211 is connected to the first notch 101 through the first weld 31, thereby illustrating that the mounting portion 22 is smoothly transited to the first weld 31 in the horn-shaped manner, so that the first weld 31 is far away from the mounting portion 22, when the mounting seat 2 receives the torque transmitted by the horizontal wheel 4 and the like, the torque is transmitted to the first weld 31 by the mounting seat 2 in the process of transmitting the torque to the first weld 31 through the horn-shaped smooth transition structure, so that risks of weld cracking, fatigue fracture and the like caused by stress concentration of the first weld 31 can be effectively improved, or the mounting portion 22 at the stress position of the mounting seat 2 can be far away from the first weld 31 through the horn-shaped smooth transition structure, so that risks of weld cracking, fatigue fracture and the like caused by stress concentration of the first weld 31 can be effectively improved, thereby effectively ensuring that the loaded stress at the position does not exceed the maximum yield stress of the material and prolonging the service life of the bogie 100.

It should be noted that the specific form of the notch 10 according to the embodiment of the present invention is not limited to the above-described embodiment. In other embodiments, such as shown in fig. 7 and 8, when the first notch 101 penetrates the first beam plate 111 in the second direction F2 in the direction of the third beam plate 113, the partial edge 1131 of the third beam plate 113 may not extend to the first notch 101, but the notch 10 further includes a second notch 102 formed on the third beam plate 113, the second notch 102 penetrates the third beam plate 113 in the first direction F1 in the direction of the first beam plate 111, and the second notch 102 is communicated with the first notch 101, and in conjunction with fig. 9, the connecting portion 21 further includes a second plate portion 212 filling the second notch 102, and the edge of the second plate portion 212 is butt-welded to the edge of the second notch 102 defined by the third beam plate 113, such as to obtain the third weld 33 shown in fig. 9. This allows the mount 2 to be designed flexibly.

It should be noted that the shape of the second notch 102 is not limited as long as butt welding is facilitated, for example, in the specific example shown in fig. 8, the second notch 102 may also be a rectangular shape lacking one side, so as to facilitate welding to obtain the third weld 33 shown in fig. 9. It is understood that, in order to ensure that the third beam 113 is a one-piece beam, when the second notch 102 penetrates the third beam 113 in the first direction F1 toward the first beam 111, the second notch 102 does not penetrate the second beam 112 in the first direction F1 in a direction away from the first beam 111. In addition, the material of the mounting seat 2 according to the embodiment of the present invention is not limited, and for example, a casting or a forging may be used to facilitate the installation.

Next, with reference to the drawings, a rail vehicle 1000 according to an embodiment of the invention is described.

As shown in fig. 10, a railway vehicle 1000 according to an embodiment of the present invention may include a vehicle body 200 and a bogie 100, the bogie 100 being mounted to the vehicle body 200 and being the bogie 100 of any of the above embodiments. Thus, the bogie 100 can improve the driving safety of the railway vehicle 1000. It should be noted that the type of the rail vehicle 1000 is not limited, and may be, for example, a monorail vehicle, such as a suspended monorail vehicle, or a straddle monorail vehicle. In addition, in the description of the present invention, the function of the mounting base 2 is not limited, and for example, the mounting base can be used for mounting the horizontal wheels 4, for example, the horizontal wheels 4 can be guide wheels, stabilizing wheels, or the like.

Next, the bogie 100 and the railway vehicle 1000 having the same according to one embodiment of the present invention are described.

Referring to fig. 1 and 10, a railway vehicle 1000 includes a vehicle body 200 and a bogie 100, the bogie 100 being provided at the bottom of the vehicle body 200, and the bogie 100 includes a frame 1, a mount 2, and horizontal wheels 4, the frame 1 includes a mounting beam 11, the mounting beam 11 may extend in a length direction of the rail vehicle 1000 (e.g., a third direction F3 shown in fig. 1), and the mounting beams 11 are two beams spaced apart along the width direction of the rail vehicle 1000 (for example, the first direction F2 shown in fig. 1), and two ends of the length of the outer side surface or the inner side surface of each mounting beam 11 (for example, two ends in the third direction F3 shown in fig. 1) are each welded to one mounting seat 2, so that the frame 1 has one mounting seat 2 at each of the four corners, the mounting seats 2 being for mounting horizontal wheels 4, the bogie 100 may therefore include four horizontal wheels 4 to meet the turning driving requirements of the rail vehicle 1000.

Referring to fig. 2 and 3, the mounting beam 11 includes a first beam plate 111, a second beam plate 112, a third beam plate 113 and a fourth beam plate 114, the first beam plate 111 is a vertical outer surrounding plate, the second beam plate 112 is a vertical inner surrounding plate, the outer surrounding plate is spaced apart from the inner surrounding plate in the horizontal direction, and the outer surrounding plate is located on one side of the inner surrounding plate away from the center of the bogie 100, the third beam plate 113 is a horizontal lower beam plate, the fourth beam plate 114 is a horizontal upper beam plate, the upper beam plate and the lower beam plate are spaced apart in the vertical direction, and the upper beam plate is located above the lower beam plate, referring to fig. 4, the outer surrounding plate is formed with a first notch 101, the first notch 101 penetrates through the bottom of the outer surrounding plate, and is a three-sided rectangular opening lacking a bottom side, a projection of the first plate portion 211 on the outer surrounding plate is rectangular, and two sides and a top side of the first plate portion 211 are respectively connected with three-sided bevels of the first notch 101.

When the lower beam plate is welded at last in the installation beam 11, the welding form of the peripheral plate and the first plate part 211 can adopt double-edge groove butt welding connection or single-edge groove butt welding connection, and the welding form can adopt a full penetration welding line, so that the welding line can be ensured to carry out internal ultrasonic flaw detection, and the welding line quality can be effectively ensured. The peripheral plate and the inner peripheral plate can be welded with the upper beam plate in a double-edge groove butt welding mode or a single-edge groove butt welding mode respectively, and the welding line mode can also adopt a full penetration welding line, so that the welding line can be subjected to internal ultrasonic flaw detection, and the welding line quality can be effectively guaranteed. The outer end of underbeam board and the welding mode of first board 211 can be, through the mode butt welding of unilateral groove at the outer end of underbeam board open groove and the internal surface of first board 211, and butt welding welded welding seam is full penetration welding seam to guarantee that the welding seam can carry out inside ultrasonic inspection, and then can effectively guarantee the welding seam quality. In addition, the connection mode of the outer end of the lower beam plate and the lower end of the outer surrounding plate and the connection mode of the inner end of the lower beam plate and the lower end of the inner surrounding plate can be consistent with the welding mode of the outer end of the beam plate and the first plate part 211, and therefore the quality of welding seams is guaranteed.

Of course, the present invention is not limited thereto, and when the types of the rail vehicles 1000 are different, the relationship between the first beam plate 111, the second beam plate 112, the third beam plate 113, and the fourth beam plate 114 may also be adjusted, for example, the first beam plate 111 is an inner surrounding plate, the second beam plate 112 is an outer surrounding plate, or the third beam plate 113 is an upper beam plate, and the fourth beam plate 114 is a lower beam plate, and the like, which will not be described herein again. In addition, "outer" as used herein refers to: relative to the side "inboard" away from the center of the truck 100.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.