CN216546204U - Frame of rail flaw detection vehicle - Google Patents

Abstract

The embodiment of the application provides a frame of a rail flaw detection vehicle, which comprises a frame main body and at least one frame module, wherein the frame module is detachably and fixedly connected with the frame main body; the frame main body includes: two oppositely arranged edge beams; the sleeper beam comprises a sleeper beam main body and a transition part fixed at the end part of the sleeper beam main body, wherein the two ends of the transition part are respectively a small end and a large end, the transition part is gradually enlarged from the small end of the transition part to the large end of the transition part, and the small end of the transition part is fixed at one end of the sleeper beam main body; wherein the large end of the transition part is fixed at the inner side of the boundary beam. The technical problem that the frame welding forming process of a traditional rail flaw detection vehicle is complex and not detachable is solved.

Description

Frame of rail flaw detection vehicle

Technical Field

The application relates to the field of railway machinery design and manufacture, in particular to a frame of a rail flaw detection vehicle.

Background

At present, the main mode of rail damage detection at home and abroad is rail flaw detection vehicle detection, and a vehicle frame of the rail flaw detection vehicle is provided with a cab, a working device, a power system, a hydraulic system, a pneumatic system and an electrical system carrier, so that the correct relative position is ensured, and the acting force is borne. Therefore, the design and assembly of the frame play an important role in the design and manufacture of the whole vehicle. The existing frame is formed by welding a side beam, a cross beam, a longitudinal beam, a sleeper beam, a traction beam, a box beam and the like. The scheme has the following defects: 1) the frame is assembled and welded integrally by various beams, the welding process is complex, the workload is large, and the cost is high; 2) the frame is undetachable after welding forming, and the recycle is low, and repeatedly usable is poor, and the energy resource consumption is high.

Therefore, the frame welding forming process of the traditional rail flaw detection vehicle is complex and is not detachable, and the technical problem to be solved is urgently needed by the technical personnel in the field.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the application provides a frame of a track flaw detection vehicle to solve the technical problem that the frame welding forming process of the traditional track flaw detection vehicle is complex and not detachable.

The frame of the rail flaw detection vehicle comprises a frame main body and at least one frame module, wherein the frame module is detachably and fixedly connected with the frame main body; the frame main body includes:

two oppositely arranged edge beams;

the sleeper beam comprises a sleeper beam main body and a transition part fixed at the end part of the sleeper beam main body, wherein the two ends of the transition part are respectively a small end and a large end, the transition part is gradually enlarged from the small end of the transition part to the large end of the transition part, and the small end of the transition part is fixed at one end of the sleeper beam main body;

wherein the large end of the transition part is fixed at the inner side of the boundary beam.

Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:

the frame module can be produced in advance, and when the frame is assembled, the frame module and the frame main body can be fixedly connected in a detachable mode, and the assembly is simple and quick. Meanwhile, when the frame is used, if a certain frame module is damaged, only the damaged frame module needs to be detached from the frame main body, and a new frame module is replaced, so that the recycling rate is high, and the energy consumption is low. The transition part gradually becomes larger from the small end of the transition part to the large end of the transition part, namely the small end of the transition part to the large end of the transition part are smooth curved surfaces, and stress concentration is avoided. The frame of the track flaw detection vehicle of the embodiment of the application is simple and quick to assemble, and meanwhile, the structural strength and the stability of the frame are also high.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of a frame of a rail-mounted flaw detection vehicle according to an embodiment of the present application;

FIG. 2 is a top view of the frame of the rail flaw detection vehicle shown in FIG. 1;

FIG. 3 is a schematic view of a frame body of the frame of the rail-mounted flaw detector vehicle shown in FIG. 1;

FIG. 4 is a schematic view of a front end trailing beam module of the frame of the rail flaw detection vehicle shown in FIG. 1;

FIG. 5 is a schematic view of a rear end trailing beam module of the frame of the rail flaw detection vehicle shown in FIG. 1;

FIG. 6 is a schematic view of a crew support module of the frame of the rail flaw detection vehicle shown in FIG. 1;

FIG. 7 is a schematic view of a working device support module of the frame of the rail flaw detection vehicle shown in FIG. 1;

FIG. 8 is a schematic view of a transverse reinforcement module of the frame of the rail-flaw vehicle shown in FIG. 1;

FIG. 9 is a cross-sectional view A-A of the frame of the rail flaw detection vehicle shown in FIG. 2;

FIG. 10 is a schematic view of a bolster of the frame of the rail flaw detection vehicle shown in FIG. 1;

fig. 11 is a schematic view of another angle of the bolster shown in fig. 10.

Reference numerals:

100 frame body, 110 side beam, 120 sleeper beam, 121 sleeper beam body, 122 transition part, 122-1 upper wing plate, 122-2 lower wing plate,

201 front end trailing beam module, 202 rear end trailing beam module,

210 main trailing beam, 211 sub trailing beam,

220 traction fixed beam, 221 traction fixed beam longitudinal beam, 222 traction fixed beam cross beam,

230 to pull the mounting interface in a direction that is generally perpendicular to the mounting plane,

241 front end coupler element, 242 rear end coupler element,

301 a crew support module, 302 a working device support module,

310 longitudinal supporting frames, 311 longitudinal supporting frame long frame edges, 312 longitudinal supporting frame short frame edges, 313 transverse reinforcing beams,

320 support fixed beams, 321 support fixed beam longitudinal beams, 322 support fixed beam transverse beams,

400 transverse reinforcement modules, 410 transverse support frames, 420 longitudinal reinforcement beams,

510 connecting plate, 520 bolts, 530 rubber pad.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

As shown in fig. 1, 2 and 3, a frame of a rail flaw detection vehicle according to an embodiment of the present application includes a frame main body 100 and at least one frame module, where the frame module is detachably and fixedly connected to the frame main body 100; the frame body 100 includes:

two oppositely disposed edge beams 110;

the sleeper beam 120 comprises a sleeper beam main body 121 and a transition part 122 fixed at the end part of the sleeper beam main body, wherein the two ends of the transition part 122 are respectively a small end and a large end, the transition part 122 is gradually enlarged from the small end of the transition part to the large end of the transition part, and the small end of the transition part is fixed at one end of the sleeper beam main body 121;

wherein the large end of the transition part is fixed at the inner side of the edge beam 110.

The frame of track flaw detection car of this application embodiment includes two kinds of structures, and one kind is the frame module, and one kind is the frame main part, and the frame main part is the installation basis of frame module, frame module detachable fixed connection in frame main part department. Like this, the frame module can be produced in advance, and when the frame was assembled, only need with frame module and frame main part detachable fixed connection can, the equipment is simple and quick. Meanwhile, when the frame is used, if a certain frame module is damaged, only the damaged frame module needs to be detached from the frame main body, and a new frame module is replaced, so that the recycling rate is high, and the energy consumption is low. The frame body is the mounting base for the frame module, and therefore, the structure of the frame body is important. The end part of the sleeper beam main body is fixed with the small end of the transition part, one end of the transition part, which is far away from the sleeper beam main body, is a large end, and the transition part is gradually enlarged from the small end of the transition part to the large end of the transition part. Like this, the bolster is fixed with the boundary beam through the main aspects of transition portion, because the size of the main aspects of transition portion is big than the size of the tip of transition portion, and the load that the bolster received can be quick transmits to the boundary beam for the structural strength and the stability of whole frame main part are higher. The transition part gradually becomes larger from the small end of the transition part to the large end of the transition part, namely the small end of the transition part to the large end of the transition part are smooth curved surfaces, and stress concentration is avoided. The frame of the track flaw detection vehicle of the embodiment of the application is simple and quick to assemble, and meanwhile, the structural strength and the stability of the frame are also high.

In practice, as shown in fig. 1, 2 and 3, the upper and lower surfaces of the transition portion 122 become progressively larger from the small end of the transition portion to the large end of the transition portion; the upper surface and the lower surface of the transition part are smooth curved surfaces, so that stress concentration can be avoided;

and/or both sides of the transition portion 122 become progressively larger from the small end of the transition portion to the large end of the transition portion; namely, two side surfaces of the transition part between the upper surface and the lower surface are smooth curved surfaces, so that stress concentration can be avoided;

the end face of the small end of the transition portion is consistent with the end face of the sleeper beam main body, and the outer surface of the small end of the transition portion is flush with the outer surface of the sleeper beam main body.

Thus, after the small end of the transition part is fixed with the end face of the sleeper beam main body, the inner part is opposite in structure, the outer surface is flush, and the force borne by the sleeper beam main body can be transmitted to the transition part.

In implementation, as shown in fig. 1, the edge beam 110 is an edge beam with a U-shaped end surface, and the notches of the two edge beams 110 are arranged oppositely;

the large end of the transition portion 122 is secured to the inner channel bottom of the sill 110.

Therefore, the inner groove bottom of the U-shaped boundary beam provides an installation space for the transition part of the sleeper beam and also reserves an installation space for fixing the frame module and the boundary beam.

In practice, as shown in fig. 4 and 5, the frame module comprises a trailing beam module comprising:

a trailing beam main beam 210;

the two U-shaped traction fixing beams 220 are respectively fixed on two opposite sides of the traction beam main beam 210, and notches of the two traction fixing beams 220 are opposite;

a towing attachment interface 230 fixed to one end of the towing beam main beam 210;

the traction mounting interface 230 is detachably and fixedly connected with one of the sleeper beams 120, and the bottom of the traction fixing beam 220 is detachably and fixedly connected with the two edge beams 110 respectively.

The draw beam main beam is the installation basis of the draw beam module, the draw fixed beam is fixed with the draw fixed beam, and the draw beam main beam and the draw beam fixed beam form a middle font structure after being fixed, two sides of the middle font structure are the bottom of the draw fixed beam and two detachable fixed connections of the boundary beam, thereby leading the draw module to be stably connected with the frame main body.

In practice, as shown in fig. 4 and 5, the trailing beam main beam 210 includes:

the two towing beam sub-beams 211 with the U-shaped end surfaces are fixed to the back of the outer groove bottoms of the two towing beam sub-beams 221 to form the towing beam main beam 210;

the towing attachment beam 220 includes:

a traction fixed beam longitudinal beam 221 with a U-shaped end face;

the two traction fixing beam cross beams 222 are U-shaped in end surface, the two traction fixing beam cross beams 222 are fixed at two ends of the inner groove bottom of the traction fixing beam longitudinal beam 221, and notches of the two traction fixing beam cross beams 222 are arranged in a reverse mode;

one end of the fixed beam cross beam 222, which is far away from the fixed beam longitudinal beam, is fixed at the inner groove bottom of the fixed beam sub-beam 211.

The outer groove bottoms of the two U-shaped towing beam sub-beams are fixed back to form a towing beam main beam, and the inner groove bottoms of the two U-shaped towing beam sub-beams provide installation space for the towing fixing beam. The U-shaped traction fixed beam is formed by a traction fixed beam longitudinal beam and two traction fixed beam cross beams. The inner groove bottom of the traction fixed beam longitudinal beam provides installation space for the two traction fixed beam cross beams.

In practice, as shown in fig. 4 and 5, the frame further comprises a front end coupler assembly 241 and a rear end coupler assembly 242;

the draw beam module is two, wherein:

a trailing beam module the trailing beam main beam end remote from the trailing attachment interface secures the front end coupler assembly 241 to form a front end trailing beam module 201; namely, a front end towing beam module is formed by combining a towing beam module and a front end coupler assembly;

the other trailing beam module trailing beam main beam end remote from the trailing attachment interface secures the rear end coupler assembly 242 to form a rear trailing beam module; i.e., another trailing beam module and the rear coupler assembly, combine to form the rear trailing beam module 202.

Therefore, the front-end traction beam module and the rear-end traction beam module are integrated, so that the front-end traction beam module and the rear-end traction beam module can be conveniently fixed with a frame body, and an installation space can be provided for installation of a coupler.

Specifically, each component of the front end draft sill module is fixed by welding, and each component of the rear end draft sill module is fixed by welding.

The front end traction beam module fixed by welding and the rear end traction beam module fixed by welding have higher structural stability.

In practice, as shown in fig. 6 and 7, the frame module further comprises a support module, the support module comprising:

a rectangular longitudinal support frame 310;

the two ends of the transverse reinforcing beam 313 are respectively fixed with the long frame edge 311 of the longitudinal supporting frame, and the transverse reinforcing beam 313 and the short frame edge 312 of the longitudinal supporting frame are arranged in parallel;

at least a pair of U-shaped supporting and fixing beams 320, the supporting and fixing beams 320 are respectively fixed at the opposite positions of the two longer frame edges 311 of the longitudinal supporting frame, and the notches of the two supporting and fixing beams 320 are opposite.

Therefore, the two ends of the transverse reinforcing beam are respectively fixed with the long frame edge of the longitudinal supporting frame and are arranged in parallel with the short frame edge of the longitudinal supporting frame, and thus, the frame structure formed by the longitudinal supporting frame and the transverse reinforcing beam is stable. The bottom of the U-shaped supporting and fixing beam is used as a position fixed with the edge beam, and a space for fixing the frame main body is provided for the supporting module.

The support module of above-mentioned structure, the stability of structure is higher.

In implementation, as shown in fig. 6 and 7, the long frame side of the longitudinal support frame is a long frame side 311 of the longitudinal support frame with a U-shaped end face, and the short frame side of the longitudinal support frame is a short frame side 312 of the longitudinal support frame with a U-shaped end face;

the two short frame sides 312 of the longitudinal support frame are arranged in parallel in a manner that the notches are arranged oppositely;

the two longitudinal support frame long frame edges 311 are arranged in parallel in a mode that the notches are arranged in an opposite mode, and the two ends of the longitudinal support frame long frame edges 311 are fixed at the bottoms of the inner grooves of the two longitudinal support frame short frame edges.

The inner groove bottom of the short frame edge of the longitudinal support frame provides an installation space for installing the long frame edge of the longitudinal support frame, and the inner groove bottom of the long frame edge of the longitudinal support frame provides an installation space for supporting the fixed beam, so that the longitudinal support frame is simple in structure, high in stability and high in strength.

In practice, as shown in fig. 6 and 7, the supporting and fixing beam 320 includes:

a support fixed beam longitudinal beam 321 whose end face is U-shaped;

the two supporting and fixing beam cross beams 322 with the U-shaped end surfaces are fixed at two ends of the inner groove bottom of the supporting and fixing beam longitudinal beam 321, and the notches of the two supporting and fixing beam cross beams 322 are arranged in a back-to-back manner;

one end of the supporting and fixing beam cross beam 322, which is far away from the supporting and fixing beam longitudinal beam 321, is fixed at the inner groove bottom of the long frame edge 311.

The U-shaped supporting and fixing beam is formed by a supporting and fixing beam longitudinal beam and two supporting and fixing beam cross beams. The inner tank bottom of the support fixed beam longitudinal beam provides installation space for the two support fixed beam cross beams, and one end of the support fixed beam cross beam, which is far away from the support fixed beam longitudinal beam, is fixed at the inner tank bottom of the long frame edge. Like this, support fixed beam self simple structure, stable in structure, the realization that simultaneously also can be convenient is fixed with the long frame limit of vertical carriage for the simple structure of whole support module is stable, and intensity is higher.

In practice, as shown in fig. 6, the support module comprises a crew support module 301;

one transverse reinforcing beam 313 and one pair of supporting and fixing beams 320 of the unit supporting module; wherein:

the transverse reinforcing beam 313 is positioned in the middle of the inner side of the long frame edge 311 of the longitudinal support frame;

the support fixing beam 320 is positioned in the middle of the outer side of the longitudinal support frame long frame edge 311;

the unit supporting module is arranged in the area of the unit of the support rail flaw detection vehicle in the frame.

Therefore, the unit supporting module is an independent module, the stability of the structure of the unit supporting module is high, and the strength of the structure can be adapted to the function of the unit supporting the rail flaw detection vehicle. At unit upgrading and upgrading, can satisfy the multiple demand of track flaw detection car according to the unit support module that the unit change corresponds, realize the reuse of frame.

In practice, as shown in fig. 7, the support module further includes a working device support module 302;

three transverse reinforcing beams 313 of the working device supporting module and two pairs of supporting and fixing beams 320; wherein:

the three transverse reinforcing beams 313 are fixed at equal intervals on the inner side of the longitudinal support frame long frame edge 311;

two pairs of the supporting and fixing beams 313 are fixed at the outer side of the longitudinal supporting frame long frame edge 311 at equal intervals;

the working device supporting module is arranged in the frame and used for supporting the working device of the rail flaw detection vehicle.

In this way, the working device support module is an individual module, the structural stability of which is high, the structural strength of which can be adapted to the function of the working device supporting the rail-mounted flaw detection vehicle. In addition, the working device may be a multifunctional working device, and the structure and strength of the working device support module may be determined according to the weight of the working device. The working device is upgraded and updated, the corresponding working device supporting module can be replaced according to the working device, the requirements of different functional interfaces of the frame are met, and the multifunctional recycling of the frame is realized.

In practice, as shown in fig. 1 and 8, the frame module further includes a transverse reinforcement module 400, and the transverse reinforcement module 400 includes:

a rectangular lateral support frame 410;

at least one longitudinal reinforcing beam 420, wherein two ends of the longitudinal reinforcing beam 412 are respectively fixed to the long frame sides of the transverse supporting frame 410, and the longitudinal reinforcing beam 412 and the short frame sides of the transverse supporting frame 410 are arranged in parallel;

wherein, the short frame edge 412 of the transverse supporting frame is detachably and fixedly connected with the edge beam 110.

Like this, realized carrying out the effect of reinforcement with the frame main part in the transverse direction through horizontal reinforcement module for the structural stability and the intensity of frame are higher.

In the implementation, as shown in fig. 1 and fig. 2, there are two unit supporting modules 301 and one working device supporting module 302; wherein:

the working device support module 302 is located between two bolster beams 120;

the two unit supporting modules 301 are respectively fixed on two sides of the working device supporting module;

the short frame of the longitudinal support frame of the unit support module 301 and the short frame of the longitudinal support frame of the working device support module 302 are fixed, and the transverse reinforcement module 400 is located above the short frame of the longitudinal support frame of the unit support module 301 and the short frame of the longitudinal support frame of the working device support module 302.

In this way, the working device support module is located in the frame main body, especially can be located in the middle of the frame main body, the machine set support modules are respectively fixed on two sides of the working device support module, and the machine set support modules are further fixed with the sleeper beam. The outer sides of the two sleeper beams are respectively fixed with a front end traction module and a rear end traction module.

The frame is generally a symmetrical structure centered on the work implement support module.

In practice, as shown in fig. 1, 2, 8 and 9, the frame further comprises a plurality of detachable fixed connection assemblies, wherein each detachable fixed connection assembly comprises a U-shaped connection plate 510, a bolt 520, a rubber pad 530 and a locknut, wherein the bolt 520 is a hexagon bolt, and the head of the bolt is provided with a hole;

the rubber pad 530 is arranged at the bottom of the inner groove of the U-shaped connecting plate 510, and the screw of the bolt 520 passes through the two connected pieces and the rubber pad 530 to be screwed and fixed with the locknut;

the two connected pieces comprise a frame main body and frame modules, and/or the two connected pieces comprise two adjacent frame modules;

the end faces of all the components with the U-shaped end faces are consistent in shape, wherein each component with the U-shaped end faces comprises a boundary beam, a traction beam sub-beam, a traction fixed beam longitudinal beam, a traction fixed beam cross beam, a support fixed beam longitudinal beam and a support fixed beam cross beam. The section profiles with the end surfaces of the same specification are used for all the parts with the U-shaped end surfaces, so that the design is simple, the process is simple, and the manufacturing cost is low.

Can be convenient through dismantling the fixed connection that can dismantle in the realization frame of fixed connection subassembly, can realize fast assembly during the equipment. When the disassembly is needed, the disassembly can be conveniently realized.

As an alternative embodiment, as shown in fig. 10 and 11, the bolster body 121 is a box-type structure bolster body 121;

the transition portion includes:

the two upper wing plates 122-1 are symmetrically fixed on the upper surface of the body 121, the small ends of the two upper wing plates are arranged oppositely, and the large ends of the two upper wing plates are fixed on the inner side of the boundary beam;

and the two lower wing plates 122-2 are symmetrically fixed on the lower surface of the body 121, the small ends of the two lower wing plates are arranged oppositely, and the large ends of the two lower wing plates are fixed on the inner side of the boundary beam.

The sleeper beam is a single structural member, and all components of the sleeper beam are fixedly connected together and then connected with the boundary beam. Therefore, the sleeper beam and the boundary beam can be assembled and disassembled more conveniently, and the subsequent maintenance is more convenient. The mode of going up pterygoid lamina and lower pterygoid lamina for fixed connection with the sleeper beam main part is convenient, and great with the fixed connection area of boundary beam, the stability of frame is stronger.

Specifically, the lower bottom of the body 121 has a core hole.

In the description of the present application and the embodiments thereof, it is to be understood that the terms "top", "bottom", "height", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such 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, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (14)

1. The frame of the rail flaw detection vehicle is characterized by comprising a frame main body and at least one frame module, wherein the frame module is detachably and fixedly connected with the frame main body; the frame main body includes:

two oppositely arranged edge beams;

the sleeper beam comprises a sleeper beam main body and a transition part fixed at the end part of the sleeper beam main body, wherein the two ends of the transition part are respectively a small end and a large end, the transition part is gradually enlarged from the small end of the transition part to the large end of the transition part, and the small end of the transition part is fixed at one end of the sleeper beam main body;

wherein the large end of the transition part is fixed at the inner side of the boundary beam.

2. The frame of the rail-guided flaw detection vehicle of claim 1, wherein the upper and lower surfaces of the transition portion become progressively larger from the small end of the transition portion to the large end of the transition portion;

and/or the two sides of the transition part become larger gradually from the small end of the transition part to the large end of the transition part;

the end face of the small end of the transition portion is consistent with the end face of the sleeper beam main body, and the outer surface of the small end of the transition portion is flush with the outer surface of the sleeper beam main body.

3. The frame of the rail flaw detection vehicle as claimed in claim 1 or 2, wherein the edge beam is a U-shaped edge beam, and the notches of the two edge beams are arranged oppositely;

the large end of the transition part is fixed at the bottom of the inner groove of the edge beam.

4. The frame of the rail flaw detection vehicle of claim 3, wherein the frame module includes a trailing beam module comprising:

a trailing beam main beam;

the two U-shaped traction fixing beams are respectively fixed on two opposite sides of the main beam of the traction beam, and notches of the two traction fixing beams are opposite;

the traction mounting interface is fixed at one end of the main beam of the traction beam;

the traction mounting interface is detachably and fixedly connected with one of the two corbels, and the bottom of the traction fixing beam is detachably and fixedly connected with the two boundary beams respectively.

5. The frame of the rail flaw detection vehicle of claim 4, wherein the trailing beam main beam includes:

the two traction beam sub-beams are U-shaped in end surface, and the outer groove bottoms of the two traction beam sub-beams are fixed with each other to form the traction beam main beam;

the towing attachment beam includes:

a traction fixed beam longitudinal beam with a U-shaped end face;

the two traction fixing beam cross beams are fixed at two ends of the inner groove bottom of the traction fixing beam longitudinal beam, and notches of the two traction fixing beam cross beams are arranged in a reverse mode;

and one end of the traction fixing beam cross beam, which is far away from the traction fixing beam longitudinal beam, is fixed at the bottom of the inner groove of the traction beam sub beam.

6. The frame of the rail flaw detection vehicle of claim 5, further comprising a front end coupler assembly and a rear end coupler assembly;

the draw beam module is two, wherein:

one end of a traction beam main beam of the traction beam module, which is far away from the traction mounting interface, is fixed with the front-end coupler assembly to form a front-end traction beam module;

and one end of the main beam of the traction beam of the other traction beam module, which is far away from the traction mounting interface, is fixed with the rear-end coupler assembly to form a rear-end traction beam module.

7. The frame of the rail flaw detection vehicle of claim 6, wherein the frame module further comprises a support module comprising:

a rectangular longitudinal support frame;

the two ends of the transverse reinforcing beam are respectively fixed with the long frame edge of the longitudinal supporting frame, and the transverse reinforcing beam is arranged in parallel with the short frame edge of the longitudinal supporting frame;

and the pair of supporting and fixing beams are respectively fixed at the back positions of the two longer frame edges of the longitudinal supporting frame.

8. The frame of the rail flaw detection vehicle according to claim 7, wherein the long frame side of the longitudinal support frame is a long frame side with a U-shaped end face, and the short frame side of the longitudinal support frame is a short frame side with a U-shaped end face;

the two short frame edges are arranged in parallel in a mode that the notches are arranged oppositely;

two the mode parallel arrangement that long frame limit set up with the notch back of the body mutually, just the both ends of long frame limit are fixed two the interior tank bottom of short frame limit.

9. The frame of the rail-mounted flaw detection vehicle of claim 8, wherein the support fixing beam comprises:

a supporting fixed beam longitudinal beam with a U-shaped end face;

the two supporting and fixing beam cross beams are fixed at two ends of the inner groove bottom of the supporting and fixing beam longitudinal beam, and notches of the two supporting and fixing beam cross beams are arranged in a back-to-back manner;

and one end of the supporting and fixing beam cross beam, which is far away from the supporting and fixing beam longitudinal beam, is fixed at the inner groove bottom of the long frame edge.

10. The frame of the rail flaw detection vehicle of claim 9, wherein the support module comprises a unit support module;

the transverse reinforcing beams of the unit supporting module are one and the supporting and fixing beams are a pair; wherein:

the transverse reinforcing beam is positioned in the middle of the inner side of the long frame edge;

the supporting and fixing beam is positioned in the middle of the outer side of the long frame edge;

the unit supporting module is arranged in the area of the unit of the support rail flaw detection vehicle in the frame.

11. The frame of a rail-mounted flaw detection vehicle of claim 10, wherein the support module further includes a working device support module;

the number of the transverse reinforcing beams of the working device supporting module is three, and the number of the supporting and fixing beams is two; wherein:

the three transverse reinforcing beams are fixed on the inner side of the long frame edge at equal intervals;

the two pairs of supporting and fixing beams are fixed on the outer side of the long frame edge at equal intervals;

wherein the working device supporting module is arranged in the frame in the area for supporting the working device of the rail-flaw detection vehicle.

12. The frame of the rail flaw detection vehicle of claim 11, wherein the frame modules further comprise transverse reinforcement modules, the transverse reinforcement modules comprising:

a rectangular transverse support frame;

the two ends of the longitudinal reinforcing beam are respectively fixed with the long frame edge of the transverse supporting frame, and the longitudinal reinforcing beam is arranged in parallel with the short frame edge of the transverse supporting frame;

and the short frame edge of the transverse supporting frame is detachably and fixedly connected with the edge beam.

13. The frame of the rail flaw detection vehicle of claim 12, further comprising a plurality of detachable fixed connection assemblies, wherein each detachable fixed connection assembly comprises a U-shaped connection plate, a bolt, a rubber pad and a locknut, wherein the bolt is a hexagon bolt, and the head of the bolt is provided with a hole;

the rubber pad is arranged at the bottom of the inner groove of the U-shaped connecting plate, and a screw rod of the bolt penetrates through the two connected pieces and the rubber pad to be screwed and fixed with the locknut;

the two connected pieces comprise a frame main body and frame modules, and/or the two connected pieces comprise two adjacent frame modules;

the end faces of all the components with the U-shaped end faces are consistent in shape, wherein each component with the U-shaped end faces comprises a boundary beam, a traction beam sub-beam, a traction fixed beam longitudinal beam, a traction fixed beam cross beam, a support fixed beam longitudinal beam and a support fixed beam cross beam.

14. The frame of the rail flaw detection vehicle of claim 1, wherein the bolster body is a box-type structure bolster body;

the transition portion includes:

the two upper wing plates are symmetrically fixed on the upper surface of the sleeper beam main body, the small ends of the two upper wing plates are oppositely arranged, and the large ends of the two upper wing plates are fixed on the inner sides of the side beams;

the two lower wing plates are symmetrically fixed on the lower surface of the sleeper beam main body, the small ends of the two lower wing plates are arranged oppositely, and the large ends of the two lower wing plates are fixed on the inner side of the boundary beam.

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