CN109969215B

CN109969215B - Railway vehicle bogie

Info

Publication number: CN109969215B
Application number: CN201910248603.6A
Authority: CN
Inventors: 杨伟东; 李志龙; 吕建法; 周君锋; 王燕
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-08-07
Anticipated expiration: 2039-03-29
Also published as: CN109969215A

Abstract

The invention discloses a railway vehicle bogie and an obstacle and derailment detection device mounting arm, which comprises a top plate, a bottom plate and a fixing plate; the fixing plates are vertically arranged and provided with connecting holes for connecting with the framework; one end of the top plate is connected to the position, deviated to the upper part, of the fixing plate, and the other end of the top plate extends towards the front lower part; one end of the bottom plate is connected to the position of the fixing plate, which is deviated to the lower part, and the other end of the bottom plate extends forwards and downwards and then forwards and then is connected to the top plate; the fixed plate, the top plate, the bottom plate, the left subplate and the right subplate are connected in a welding mode to form a closed box-shaped structure, and the left subplate and the right subplate respectively retract inwards from the left side and the right side of the top plate and the bottom plate. The mounting arm is high in structural strength and stable and reliable in performance.

Description

Railway vehicle bogie

Technical Field

The invention relates to the technical field of railway vehicles, in particular to an installation arm of an obstacle and derailment detection device of a railway vehicle. The invention also relates to a railway vehicle bogie provided with said mounting arm.

Background

The obstacle and derailment detection device is usually arranged at the front ends of a head train and a tail train of the train, when the train touches the obstacle or derails, the device can give an alarm and trigger the train to implement emergency braking, the driving safety of the full-automatic driving train can be improved, and the severity of accident consequences is reduced.

As shown in fig. 1, the obstacle deflector 1A is configured to have high rigidity, the impact bar 10 is thick, the left-side operating member 2B, the support member 3B, and the frame 4B are symmetrical to the right-side operating member 2A, the support member 3A, and the frame 4A, and have the same configuration as the right-side operating member 2A, the support member 3A, and the frame 4A, the main plate 31 of the support member 3A is joined to the frame 4A, the support member 3A is fixed to the frame 4A by a bolt B2, and each end of the rotation axis of the left-side operating member 2B and the right-side operating member 2A is fixed to the receiving plate 33 by a bolt and a nut.

The frames 4A and 4B of the structure are composed of a top plate, a bottom plate and webs positioned on two sides of the top plate and the bottom plate, the roots of the frames are connected with a framework, the structural strength of the frames is limited, the reliability and the stability of the frames are poor, and safety risks are easy to occur in the long-term use process.

Disclosure of Invention

The invention aims to provide a railway vehicle bogie which has high structural strength and stable and reliable performance.

In order to achieve the purpose, the invention provides a railway vehicle bogie which comprises a bogie body, a mounting arm, an obstacle and a derailment detection device, wherein the mounting arm is fixed at the front end of the bogie body, the obstacle and the derailment detection device are arranged on the mounting arm, and the mounting arm

Comprises a top plate, a bottom plate and a fixing plate; the fixing plates are vertically arranged and provided with connecting holes for connecting with the framework; one end of the top plate is connected to the position, deviated to the upper part, of the fixing plate, and the other end of the top plate extends towards the front lower part; one end of the bottom plate is connected to the position of the fixing plate, which is deviated to the lower part, and the other end of the bottom plate extends forwards and downwards and then forwards and then is connected to the top plate; a left auxiliary plate and a right auxiliary plate are arranged between the top plate and the bottom plate, the fixed plate, the top plate, the bottom plate, the left auxiliary plate and the right auxiliary plate are welded and connected to form a closed box-type structure, and the left auxiliary plate and the right auxiliary plate are retracted inwards from the left side and the right side of the top plate and the bottom plate respectively; the mounting arm is connected with a mounting frame, the mounting frame comprises a back plate and two vertically arranged support plates, the two support plates are parallel to each other, and the rear ends of the support plates are fixedly connected with the back plate; the distance between the two support plates is matched with the width of the deformation element of the obstacle and derailment detection device; the deformation element comprises a body part, a first bending part and a second bending part, wherein the first bending part is bent downwards from one end of the body part; the first limiting part is arranged between the upper ends of the front sides of the two supporting plates, and the second limiting part is arranged between the lower ends of the front sides of the two supporting plates; the first limiting piece is used for supporting the joint of the body part and the first bent part, and the second limiting piece is used for abutting against the front side face of the first bent part; the second limiting part is of a flat plate structure.

Preferably, the ends of the top plate and the bottom plate connected to the fixing plate are respectively widened toward the left and right sides, and a transition arc-shaped portion is provided between the widened portion and the non-widened portion.

Preferably, the top plate and the bottom plate both comprise a vertical part, a transition part is arranged between one end of the vertical part connected with the fixing plate and the vertical part, and the transition part is in a shape of an inclined plane or an arc surface.

Preferably, the distance between the top plate and the bottom plate gradually narrows from the end connected with the fixed plate to the vertical portion, and the widths of the upper parts of the left and right sub-plates gradually narrow downwards from the end connected with the fixed plate.

Preferably, the vertical portion of the top plate is provided with a portion widened to the left and right sides, respectively, and is provided with a left connecting portion and a right connecting portion at least partially located at the widened portion, the left connecting portion being located on the outer side of the left sub-plate, and the right connecting portion being located on the outer side of the right sub-plate in the lateral direction.

Preferably, the plate bodies of the left and right sub-plates between the vertical parts of the top and bottom plates are further retracted inwards from the left and right sides, so that the transverse distance between the left and right sub-plates at the position is reduced.

Preferably, a left reinforcing plate is arranged in a right-angle area formed between the vertical portion of the top plate and the left auxiliary plate, and a right reinforcing plate is arranged in a right-angle area formed between the vertical portion of the top plate and the right auxiliary plate.

Preferably, the left connecting part and the right connecting part respectively comprise connecting plates stacked on the top plate, and the connecting plates are provided with connecting holes and convex parts or concave parts used for matching and positioning.

Preferably, the connecting plate is provided with an upper connecting hole and a lower connecting hole, and the protruding portion or the recessed portion is located between the upper connecting hole and the lower connecting hole.

Preferably, the back of the fixing plate is provided with a raised anti-rotation part.

Preferably, the rotation-preventing portion is in the shape of a raised polygon, an ellipse, or a circle having a cut-out portion at an outer edge portion.

Preferably, the bottom plate comprises an upper bottom plate and a lower bottom plate which are connected in a welding mode, and the thickness of the upper bottom plate is larger than that of the lower bottom plate.

The invention provides a railway vehicle bogie, wherein an installation arm of an obstacle and a derailment detection device of the railway vehicle bogie mainly comprises a fixed plate, a top plate, a bottom plate, a left auxiliary plate and a right auxiliary plate, the fixed plate, the top plate, the bottom plate, the left auxiliary plate and the right auxiliary plate are welded and connected to form a closed box-shaped structure, the left auxiliary plate and the right auxiliary plate respectively retract inwards from the left side and the right side of the top plate and the bottom plate, the whole installation arm is in a shape extending forwards and downwards, the installation arm is connected with a framework through the fixed plate during use, the obstacle and the derailment detection device are installed at the lower end of the top plate, the installation arm bears the weight of the obstacle and the derailment detection device, and the railway vehicle bogie is high in structural strength, better in reliability and stability and capable of avoiding potential safety hazards in the.

Drawings

Fig. 1 is a schematic structural view of a barrier removing apparatus for a railway vehicle;

FIG. 2 is a schematic structural diagram of a mounting arm of an obstacle and derailment detection apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of the mounting arm of the obstruction and derailment detection apparatus shown in FIG. 2 from another perspective;

FIG. 4 is a schematic structural diagram of an obstacle and derailment detection apparatus mounting bracket according to an embodiment of the present invention;

FIG. 5 is a schematic view of the mounting bracket of the obstruction and derailment detection apparatus of FIG. 4 from another perspective;

fig. 6 is a schematic view of the deformation element shown in fig. 4.

In fig. 1:

1A, obstacle deflector 2A, 2B,

operation member

3A, 3B, support member 4A, 4B, frame 10, collision bar 31, main plate 33, receiving plate

In fig. 2 to 6:

1. top plate 2, bottom plate 21, upper plate 22, lower plate 3, fixing plate 31, left connecting hole 32, right connecting hole 4, left auxiliary plate 5, rotation-preventing part 6, inclined surface 7, arc part 8, connecting plate 9, connecting hole 10, recessed part 11, left reinforcing plate

100. The back plate 110, the mounting hole 120, the fixing hole 130, the boss 200, the support plate 220, the arc portion 300, the first limiting member 400, the second limiting member 500, the reinforcing rib plate 600, the deformation element 610, the body portion 620, the first bent portion 630, and the second bent portion

Detailed Description

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In this document, terms such as "upper, lower, left, right" and the like are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, they are not to be construed as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of an installation arm of an obstacle and derailment detection apparatus according to an embodiment of the present invention; fig. 3 is a schematic view of the obstacle and derailment detection apparatus mounting arm shown in fig. 2 from another perspective.

As shown in the drawings, in an embodiment, the mounting arm of the obstacle and derailment detection apparatus provided by the present invention is mainly composed of a top plate 1, a bottom plate 2, a fixing plate 3, a left sub-plate 4 and a right sub-plate (not shown in the drawings due to shielding), one end of the top plate 1 is connected to a position where the fixing plate 3 is biased to the upper part, and the other end of the top plate 1 extends to the front lower part; one end of the bottom plate 2 is connected to the position of the fixed plate 3 deviated to the lower part, and the other end of the bottom plate 2 extends forwards and downwards and then forwards and then is connected to the top plate 1; be equipped with left subplate 4 and right subplate between roof 1 and the bottom plate 2, roof 1, bottom plate 2, fixed plate 3, left subplate 4 and right subplate welded connection form confined box structure, and left subplate 4 and right subplate are from roof 1 and bottom plate 2 about both sides inside indentation certain distance respectively, whole installation arm is the shape that extends to the below, be connected with the bogie through fixed plate 3 during the use, obstacle and derailment detection device then install in the lower extreme of roof 1, bear obstacle and derailment detection device's weight by the installation arm.

The fixed plate 3 is vertically arranged, the plate surface of the fixed plate is perpendicular to the longitudinal direction of the vehicle body when the fixed plate is installed, connecting holes are formed in the fixed plate 3 and are fixedly connected with the framework through bolts, the connecting holes in the fixed plate 3 comprise two left connecting holes 31 and two right connecting holes 32, the left connecting holes 31 are located in the outer side of the left auxiliary plate 4, and the right connecting holes 32 are located in the outer side of the right auxiliary plate.

The back of the fixed plate 3 is provided with a raised anti-rotation part 5 at the central position, the anti-rotation part 5 is in a raised octagonal shape, the middle of the anti-rotation part is provided with a lightening hole, and when the anti-rotation part is installed, the fixed plate 3 is fixed with a framework through a bolt and is matched with a square hole on the framework through the anti-rotation part 5. Like this, even the bolt became invalid, the installation arm can not take place for the framework and rotate to guaranteed barrier and derail detection device's stability, simultaneously, can also alleviate the burden of bolt through the cooperation that prevents changeing position 5 and square hole, made the connection performance of bolt more reliable, stable.

It can be understood that the anti-rotation portion 5 is not limited to an octagon, but may be a quadrangle, a hexagon, an ellipse, or a circle with a part cut away, or the anti-rotation portion 5 is not a single structure, but is divided into a plurality of different protruding structures, and the anti-rotation function can be realized by matching with the hole sites with the number corresponding to the number on the frame.

The top plate 1 and the bottom plate 2 both comprise vertical parts, a transition part is arranged between one end of the top plate 1 connected with the fixing plate 3 and the vertical parts, the transition part can be an inclined surface 6 or an arc surface, one end of the top plate 1 connected with the fixing plate 3 and one end of the bottom plate 2 connected with the fixing plate 3 are respectively widened towards the left side and the right side, and a transition arc part 7 is arranged between the widened part and the non-widened part.

The distance between the top plate 1 and the bottom plate 2 is gradually narrowed from the end connected with the fixed plate 3 to the vertical portion, the left sub-plate 4 and the right sub-plate are in a shape of being wide at the top and narrow at the bottom, and the width of the upper portion thereof is gradually narrowed from the end connected with the fixed plate 3 to the bottom.

The vertical part of roof 1 is equipped with left connecting portion and right connecting portion to be equipped with the position that widens respectively to the left and right sides, simultaneously, the plate body that left subplate 4 and right subplate are located between roof 1 and the vertical part of bottom plate 2 is inwards from the left and right sides respectively further indentation, makes left subplate 4 and right subplate diminish at the horizontal interval at this position. In this way, in the transverse direction, the left connecting portion can be offset to the left by a certain distance, outside the left sub-panel 4, and the right connecting portion can be offset to the right by a certain distance, outside the right sub-panel.

Left side connecting portion and right connecting portion are respectively including superposing connecting plate 8 in roof 1, a part of connecting plate 8 is located roof 1 widened position, be equipped with connecting hole 9 and be used for cooperating the concave part position 10 of location on the connecting plate 8, connecting hole 9 on the connecting plate 8 divide into connecting hole and lower connecting hole, concave part position 10 is in the position between last connecting hole and the lower connecting hole, when the installation, this concave part position 10 and the protruding position nested cooperation on barrier and the derailment detection device, barrier and derailment detection device's weight mainly transmit the installation arm through this unsmooth cooperation structure, connecting bolt mainly plays the fixed action, avoided connecting bolt to bear too big shearing force.

The top plate 1 is provided with a positioning hole, the back of the connecting plate 8 is provided with a positioning column which corresponds to the connecting hole 9 and is penetrated through by the connecting hole 9, after the connecting plate 8 is welded with the top plate 1, the positioning column is embedded into the positioning hole of the top plate 1, and the transverse distance between the left connecting hole 31 and the right connecting hole 32 on the fixing plate 3 is larger than that between the left connecting hole 9 and the right connecting hole 9 on the top plate 1.

In order to improve the structural strength of the mounting arm, a left reinforcing plate 11 is arranged in a right-angle area formed between the vertical part of the top plate 1 and the left auxiliary plate 4, a right reinforcing plate (not shown in the figure due to shielding) is arranged in a right-angle area formed between the vertical part of the top plate 1 and the right auxiliary plate, the left reinforcing plate 11 and the right reinforcing plate are generally in a right-angled triangle shape, and the bevel edge part of the left reinforcing plate and the right reinforcing plate is designed into an inwards concave arc shape.

The bottom plate 2 comprises an upper bottom plate 21 and a lower bottom plate 22, and is formed by welding the upper bottom plate 21 and the lower bottom plate 22, wherein the thickness of the upper bottom plate 21 is about 8mm, and the thickness of the lower bottom plate 22 is about 6mm, namely, the thickness of the upper bottom plate 21 is larger than that of the lower bottom plate 22. Therefore, the structural strength requirement is met, the whole weight of the mounting arm can be reduced, and the light weight of the product is realized.

The top plate 1 and the bottom plate 2 can be respectively a whole plate or formed by welding a plurality of plates, if the top plate and the bottom plate are formed by welding a plurality of plates, the stress distribution positions (arc positions and the like) of the top plate and the bottom plate should be staggered with the welding seams and the variable cross-section positions, so that the structural strength after welding connection is improved, and the structural strength is prevented from being weakened due to the fact that the welding seams, the variable cross-section positions and the stress distribution positions are overlapped.

According to the invention, through further optimizing the structure of the mounting arm, the mounting arm is more reasonably stressed, the structural strength is higher, the welding seam can be prevented from being torn, the positioning of the mounting arm and the framework is more reliable, the mounting arm cannot rotate even if a bolt fails, and moreover, as the concave-convex matching structure is designed on the fixed side, the bolt for mounting the obstacle and the derailment detection device can be effectively prevented from being subjected to shearing force, so that the reliability and the safety of connection are improved.

The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the recess 10 of the connecting plate 8 is replaced by a protrusion, which, when mounted, cooperates with a recess in the obstacle and derailment detection device, etc. This is not illustrated here, since many implementations are possible.

In addition to the above obstacle and derailment detection device mounting arm, the present invention also provides a railway vehicle bogie, comprising a bogie body, a mounting arm and an obstacle and derailment detection device, wherein the mounting arm is fixed at the front end of the bogie body, and the obstacle and derailment detection device is arranged on the mounting arm, wherein the mounting arm is the obstacle and derailment detection device mounting arm in the above description.

Referring to fig. 4 to 6, fig. 4 is a schematic structural diagram of an installation frame of an obstacle and derailment detection apparatus according to an embodiment of the present invention; FIG. 5 is a schematic view of the mounting bracket of the obstruction and derailment detection apparatus of FIG. 4 from another perspective; fig. 6 is a schematic view of the deformation element shown in fig. 4.

Obstacle and derail detection device's mounting bracket includes backplate 100 and two vertical backup pad 200 that set up, and two backup pad 200 are parallel to each other, and backup pad 200's rear end and backplate 100 fixed connection.

Wherein the distance between the two support plates 200 is adapted to the width of the deformation element 600 of the derailment detection device and the obstacle.

The deformation element 600 is a plate spring, and has a substantially inverted U-shaped structure, and specifically, the deformation element 600 includes a main body 610, a first bending portion 620 bending downward from one end of the main body 610, and a second bending portion 630 bending downward from the other end of the main body 620.

The mounting bracket further comprises a first limiting member 300 and a second limiting member 400, wherein the first limiting member 300 is installed between the upper ends of the front sides of the two support plates 200, and the second limiting member 400 is installed between the lower ends of the front sides of the two support plates 200.

The first limiting member 300 is used to support a connection portion between the main body portion 610 of the deformable element 600 and the first bending portion 620, the second limiting member 400 is used to abut against a front side surface of the first bending portion 620, and the second limiting member 400 is specifically a flat plate structure, that is, the second limiting member 400 is in surface contact with the first bending portion 620 of the deformable element 600.

During assembly, the deformable element 600 is located between the two supporting plates 200, the connection between the main body 610 and the first bending portion 620 is overlapped with the first limiting member 300, and the front side of the first bending portion 620 abuts against the second limiting member 400.

During actual assembly, the lower end of the first bent part 620 of the deformation element 600 is connected with the collision beam, and the lower end of the first bent part 620 is provided with a connecting through hole for connecting with the collision beam; the back plate 100 of the mounting bracket is coupled to the railway vehicle bogie such that the deformation element 600 is coupled between the impact beam and the bogie, and is deformed in a corresponding direction by sensing vibration of the impact beam during operation of the railway vehicle.

In this mounting bracket, carry out vertical spacing second locating part 400 to deformation element 600 and be dull and stereotyped structure, like this, deformation element 600's first kink 620 is surface contact with second locating part 400, compares with the spacing round pin axle structure commonly used, and area of contact increases, and contact stress correspondingly reduces, and dull and stereotyped structure compares with spacing round pin axle structure, and connection structure is simple, and can reduce the mount in the vertical direction also be the ascending size of fore-and-aft direction exactly.

In a specific embodiment, the first limiting member 300 is a limiting pipe, and the weight of the mounting base can be reduced to a certain extent because the limiting pipe is of a hollow structure.

Specifically, the upper ends of the front sides of the two support plates 200 are provided with through holes corresponding in position, and the limiting pipe is specifically and fixedly inserted into the two through holes, that is, the limiting pipe is fixedly connected with the two support plates 200, and the limiting pipe is relatively fixed, so that the influence on the deformation element 600 caused by the rotation of the limiting pipe can be eliminated.

In a specific scheme, the lower ends of the front side surfaces of the two support plates 200 are provided with grooves corresponding in position, and the second limiting member 400 is fixedly embedded in the two grooves and is fixed with the two support plates 200 in a welding mode or a riveting mode.

In actual installation, pre-pressure may be formed between the deformable element 600 and the first limiting member 300 and the second limiting member 400 by structural arrangement, for example, by limiting an angle between the first bending portion 620 and the main body portion 610, or a distance between a front end of the first limiting member 300 and a rear end of the second limiting member 400 in a front-rear direction, so as to improve a constraint effect on the deformable element 600.

Specifically, in order to increase the pre-stress of the deformation element 600, the second bent portion 630 thereof may abut against the back plate 100 and be connected to the back plate 100 by a fastener such as a bolt.

In the illustrated embodiment, six fixing holes 120 are specifically formed in the back plate 100, the six fixing holes 120 are arranged in two rows, each row includes three fixing holes 120, six bolt holes are correspondingly formed in the second bent portion 630 of the deformation element 600, and the second bent portion 630 can be specifically connected to the back plate 100 through six bolts.

It is understood that the number of the connecting through holes of the second bending part 630 and the rear panel 100 may be set according to the requirement, and is not limited to that shown in the figure.

Specifically, in order to better match the deformation element 600 with the first limiting member 300, the main body 610 of the deformation element 600 and the first bending portion 620 are transited through an arc-shaped segment.

In this embodiment, the rear end of the supporting plate 200 is fixedly connected to the back plate 100 by welding, which is simple and reliable.

In a specific scheme, the rear end of each supporting plate 200 connected with the backboard 100 is gradually widened towards the upper and lower sides, and a transitional arc-shaped part 220 is arranged between the widened part and the non-widened part, so that the connecting position of the supporting plates 200 and the backboard 100 can be extended, and the structural strength of the mounting frame is improved.

On this basis, reinforcing rib plates 500 are fixedly arranged between the upper and lower end portions of the rear side of the support plate 200 and the back plate 100, and the reinforcing rib plates 500 are positioned at the outer side of the support plate 200. Therefore, the strength of the connecting part of the supporting plate 200 and the back plate 100 can be further improved, and the capability of the mounting rack for bearing vertical impact can be improved.

The back plate 100 is further provided with a mounting hole 110 so that the mounting bracket can be mounted on the bogie through the mounting hole 110.

In this embodiment, the mounting holes 110 are formed in the portions of the back plate 100 located at the outer sides of the two support plates 200, and the mounting hole 110 at each side is located between the two reinforcing rib plates 500 at the same side.

After setting up like this, the stress of mounting bracket mainly bears by the parent metal rather than the joint weld bears, can improve the overall structure of mounting bracket by a wide margin, on this basis, can suitably reduce the thickness of backup pad 200 and backplate 100, reduce whole weight to reduce the whole impact to the bogie of mounting bracket, improve the atress situation of bogie.

In the illustrated embodiment, two mounting holes 110 are formed in the outer side of each supporting plate 200 of the backboard 100, and the number of the mounting holes 110 can be adjusted as needed in actual installation.

In a specific scheme, the two supporting plates 200 are symmetrically arranged relative to the vertical center line of the back plate 100, so that the stress of the back plate 100 is relatively balanced, the whole structure of the mounting frame is not eccentrically arranged, and the whole stress is relatively balanced.

In this embodiment, the rear panel face of the back panel 100 is also provided with a rearwardly projecting boss 130, the boss 130 being adapted to mate with a mounting arm attached to the frame.

The top plate 1 of the mounting arm is provided with a connecting hole 9 corresponding to the mounting hole 110 of the back plate 100 of the mounting rack, and the mounting rack and the mounting arm can be connected through a bolt.

The rear side plate surface of the back plate 100 is provided with a boss 130 structure matched with the mounting arm, so that the relative position of the mounting frame and the mounting arm can be positioned, the connecting bolt of the back plate 100 and the mounting arm can be prevented from being subjected to shearing force, and the stability and the reliability of the whole structure are improved.

In a specific embodiment, the rear side plate surface of the back plate 100 is provided with two bosses 130, the two bosses 130 are respectively disposed at the outer sides of the two support plates 200, and the boss 130 at each side is located between the two mounting holes at the same side, more specifically, the two bosses 130 are substantially symmetrically disposed with respect to the center of the back plate 100, so that the stress on the back plate 100 is more balanced.

Specifically to on the installation arm, the lower extreme of roof 1 is equipped with two connecting plates 8, and every connecting plate 8 is along vertical two connecting holes 9 that are equipped with, corresponds with the position of the mounting hole 110 of the backplate 100 of mounting bracket respectively, forms concave part 10 between two connecting holes 9 of connecting plate 8, and this concave part 10 cooperatees with the boss 130 that corresponds on the backplate 100.

For the rest of the structure of the railway vehicle bogie, please refer to the prior art, and the description is omitted herein.

The railway vehicle bogie and its obstacle and derailment detection device mounting arm provided by the present invention have been described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A railway vehicle bogie comprises a bogie body, a mounting arm, a barrier and a derailment detection device, wherein the mounting arm is fixed at the front end of the bogie body, the barrier and derailment detection device is arranged on the mounting arm, and the mounting arm comprises a top plate, a bottom plate and a fixing plate; the fixing plates are vertically arranged and provided with connecting holes for connecting with the framework; one end of the top plate is connected to the position, deviated to the upper part, of the fixing plate, and the other end of the top plate extends towards the front lower part; one end of the bottom plate is connected to the position of the fixing plate, which is deviated to the lower part, and the other end of the bottom plate extends forwards and downwards and then forwards and then is connected to the top plate; a left auxiliary plate and a right auxiliary plate are arranged between the top plate and the bottom plate, the fixed plate, the top plate, the bottom plate, the left auxiliary plate and the right auxiliary plate are welded and connected to form a closed box-type structure, and the left auxiliary plate and the right auxiliary plate are retracted inwards from the left side and the right side of the top plate and the bottom plate respectively; the mounting arm is connected with a mounting frame, the mounting frame comprises a back plate and two vertically arranged support plates, the two support plates are parallel to each other, and the rear ends of the support plates are fixedly connected with the back plate; the distance between the two support plates is matched with the width of the deformation element of the obstacle and derailment detection device; the deformation element comprises a body part, a first bending part and a second bending part, wherein the first bending part is bent downwards from one end of the body part; the first limiting part is arranged between the upper ends of the front sides of the two supporting plates, and the second limiting part is arranged between the lower ends of the front sides of the two supporting plates; the first limiting piece is used for supporting the joint of the body part and the first bent part, and the second limiting piece is used for abutting against the front side face of the first bent part; the second limiting part is of a flat plate structure.

2. The railway vehicle truck of claim 1, wherein the ends of the top and bottom plates connected to the fixed plate are widened toward the left and right sides, respectively, with a transition arc portion between the widened portion and the non-widened portion.

3. The railway vehicle bogie of claim 1, wherein the top plate and the bottom plate each comprise a vertical portion, and a transition portion is provided between the end of the vertical portion connected to the fixing plate and the vertical portion, wherein the transition portion is in the shape of a ramp or an arc.

4. The railway vehicle bogie of claim 3, wherein the distance between the top plate and the bottom plate gradually narrows from the end connected with the fixed plate to the vertical portion, and the width of the upper portions of the left and right sub-plates gradually narrows from the end connected with the fixed plate downward.

5. The railway vehicle bogie of claim 3, wherein the vertical portion of the top plate is provided with a widened portion to the left and right sides, respectively, and with a left connecting portion and a right connecting portion at least partially located at the widened portions, the left connecting portion being located on the outer side of the left sub-plate and the right connecting portion being located on the outer side of the right sub-plate in the lateral direction.

6. The railway vehicle truck of claim 5 wherein the panel body of the left and right sub-panels between the vertical portions of the top and bottom panels is further indented inwardly from the left and right sides, respectively, to reduce the lateral spacing of the left and right sub-panels at that location.

7. A railway vehicle bogie as claimed in claim 6, wherein the right angle region formed between the vertical portion of the roof panel and the left sub-panel is provided with a left stiffening plate and the right angle region formed between the vertical portion of the roof panel and the right sub-panel is provided with a right stiffening plate.

8. The railway vehicle bogie of claim 5, wherein the left and right connecting portions each comprise a connecting plate overlying the top plate, the connecting plates having a connecting hole and a raised or recessed portion for mating positioning.

9. The railway vehicle truck of claim 8, wherein the connecting plate is provided with an upper connecting hole and a lower connecting hole, and the raised portion or the recessed portion is located between the upper connecting hole and the lower connecting hole.

10. The railway vehicle truck of claim 1, wherein the back of the fixed plate is provided with raised anti-rotation portions.

11. The railway vehicle truck of claim 10, wherein the anti-rotation portions are in the shape of a raised polygon, an ellipse, or a circle with a cutout portion at its outer edge.

12. The railway vehicle truck of claim 1, wherein the floor comprises a welded upper floor and a lower floor, the upper floor having a thickness greater than a thickness of the lower floor.