Frame of a rail flaw detection vehicle

Abstract

The embodiment of the present application provides a frame of a rail flaw detection vehicle, including a frame body and at least one frame module, wherein the frame module is detachably fixedly connected to the frame body; the frame body includes: two side beams arranged opposite to each other; a bolster, wherein the bolster includes a bolster body and a transition portion fixed to the end of the bolster body, wherein the two ends of the transition portion are respectively a small end and a large end, wherein the transition portion gradually becomes larger from the small end of the transition portion to the large end of the transition portion, and the small end of the transition portion is fixed to one end of the bolster body; wherein the large end of the transition portion is fixed to the inner side of the side beam. The embodiment of the present application solves the technical problem that the frame of a traditional rail flaw detection vehicle has a complicated welding process and cannot be disassembled.

Description

Technical Field

[0001] The present application relates to the field of railway machinery design and manufacturing, and in particular, to a frame of a track flaw detection vehicle. Background Art

[0002] At present, the main method of detecting rail damage at home and abroad is to use a rail flaw detection vehicle. The frame is the carrier for installing the driver's cab, working device, power system, hydraulic system, pneumatic system and electrical system to ensure the correct relative position and bear their forces. Therefore, the design and assembly of the frame plays an important role in the design and manufacture of the whole vehicle. The existing frame is welded by side beams, cross beams, longitudinal beams, pillow beams, traction beams and box beams. The shortcomings of this solution are: 1) The frame is welded together by various beams, the welding process is complicated, the workload is large, and the cost is high; 2) The frame cannot be disassembled after welding, the recycling rate is low, the reusability is poor, and the energy consumption is high.

[0003] Therefore, the frame welding process of the traditional rail flaw detection vehicle is complicated and cannot be disassembled, which is a technical problem that technical personnel in this field urgently need to solve.

[0004] The above information disclosed in the background section is only for enhancing understanding of the background of the present application and therefore it may contain information that does not form the prior art known to a person of ordinary skill in the art. Summary of the invention

[0005] The embodiment of the present application provides a frame of a track flaw detection vehicle to solve the technical problem that the frame of a traditional track flaw detection vehicle has a complicated welding process and cannot be disassembled.

[0006] A frame of a rail flaw detection vehicle according to an embodiment of the present application includes a frame body and at least one frame module, wherein the frame module is detachably fixedly connected to the frame body; the frame body includes:

[0007] two side beams arranged opposite to each other;

[0008] A bolster, the bolster comprising a bolster body and a transition portion fixed at an end of the bolster body, the two ends of the transition portion are respectively a small end and a large end, the transition portion gradually becomes larger from the small end of the transition portion to the large end of the transition portion, and the small end of the transition portion is fixed to one end of the bolster body;

[0009] Wherein, the large end of the transition portion is fixed on the inner side of the side beam.

[0010] The embodiment of the present application adopts the above technical solution, which has the following technical effects:

[0011] The frame modules can be produced in advance, and when the frame is assembled, it is only necessary to detachably fix the frame modules to the frame body, which makes the assembly simple and quick. At the same time, if a frame module is damaged during the use of the frame, it is only necessary to remove the damaged frame module from the frame body and replace it with a new frame module, which has a high recycling rate and low energy consumption. The transition portion gradually becomes larger from the small end of the transition portion to the large end of the transition portion, that is, the small end of the transition portion to the large end of the transition portion is a smooth curved surface, which avoids stress concentration. The frame of the rail flaw detection vehicle of the embodiment of the present application is simple and quick to assemble, and the structural strength and stability of the frame are also high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0013] Figure 1 A three-dimensional schematic diagram of a frame of a rail flaw detection vehicle according to an embodiment of the present application;

[0014] Figure 2 for Figure 1 A top view of the frame of the rail flaw detection vehicle shown;

[0015] Figure 3 for Figure 1 A schematic diagram of a frame body of a frame of a rail flaw detection vehicle shown;

[0016] Figure 4 for Figure 1 A schematic diagram of a front end traction beam module of a frame of a rail flaw detection vehicle is shown;

[0017] Figure 5 for Figure 1 A schematic diagram of a rear end traction beam module of a frame of a rail flaw detection vehicle is shown;

[0018] Figure 6 for Figure 1 A schematic diagram of a unit support module of a frame of a rail flaw detection vehicle is shown;

[0019] Figure 7 for Figure 1 A schematic diagram of a working device support module of a frame of a rail flaw detection vehicle is shown;

[0020] Figure 8 for Figure 1 A schematic diagram of a transverse reinforcement module of a frame of a rail flaw detection vehicle is shown;

[0021] Fig. 9 for Figure 1AA section view of the frame of the rail flaw detection vehicle shown;

[0022] Fig.10 for Figure 1 A schematic diagram of a bolster of a frame of a rail flaw detection vehicle is shown;

[0023] Fig.11 for Fig.10 A schematic diagram of another angle of the bolster shown.

[0024] Reference numerals:

[0025] 100 frame body, 110 side beam, 120 bolster, 121 bolster body, 122 transition part, 122-1 upper wing plate, 122-2 lower wing plate,

[0026] 201 front traction beam module, 202 rear traction beam module,

[0027] 210 traction beam main beam, 211 traction beam sub-beam,

[0028] 220 traction fixed beam, 221 traction fixed beam longitudinal beam, 222 traction fixed beam cross beam,

[0029] 230 traction installation interface,

[0030] 241 front end coupler assembly, 242 rear end coupler assembly,

[0031] 301 unit support module, 302 working device support module,

[0032] 310 longitudinal support frame, 311 longitudinal support frame long frame side, 312 longitudinal support frame short frame side, 313 transverse reinforcement beam,

[0033] 320 supports the fixed beam, 321 supports the fixed beam longitudinal beam, 322 supports the fixed beam cross beam,

[0034] 400 transverse reinforcement module, 410 transverse support frame, 420 longitudinal reinforcement beam,

[0035] 510 connecting plate, 520 bolts, 530 rubber pad. DETAILED DESCRIPTION

[0036] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Embodiment 1

[0037] like Figure 1, Figure 2 and Figure 3 As shown, the frame of the rail flaw detection vehicle of the embodiment of the present application includes a frame body 100 and at least one frame module, wherein the frame module is detachably fixedly connected to the frame body 100; the frame body 100 includes:

[0038] Two side beams 110 arranged opposite to each other;

[0039] A bolster 120, comprising a bolster body 121 and a transition portion 122 fixed at an end of the bolster body, wherein two ends of the transition portion 122 are a small end and a large end, respectively, and the transition portion 122 gradually becomes larger from the small end of the transition portion to the large end of the transition portion, and the small end of the transition portion is fixed to one end of the bolster body 121;

[0040] The large end of the transition portion is fixed on the inner side of the side beam 110 .

[0041] The frame of the rail flaw detection vehicle of the embodiment of the present application includes two types of structures, one is the frame module, and the other is the frame body. The frame body is the installation base of the frame module, and the frame module is detachably fixedly connected to the frame body. In this way, the frame module can be produced in advance, and when the frame is assembled, it is only necessary to detachably fix the frame module to the frame body, and the assembly is simple and fast. At the same time, during the use of the frame, if a frame module is damaged, it is only necessary to remove the damaged frame module from the frame body and replace it with a new frame module, which has a high recycling rate and low energy consumption. The frame body is the installation base of the frame module, so the structure of the frame body is very important. The end of the bolster body is fixed to the small end of the transition part, and the end of the transition part away from the bolster body is the large end, and the transition part gradually increases from the small end of the transition part to the large end of the transition part. In this way, the bolster is fixed to the side beam through the large end of the transition part. Since the size of the large end of the transition part is larger than that of the small end of the transition part, the load on the bolster can be quickly transferred to the side beam, so that the structural strength and stability of the entire frame body are relatively high. The transition part gradually becomes larger from the small end of the transition part to the large end of the transition part, that is, the small end of the transition part to the large end of the transition part is a smooth curved surface, which avoids stress concentration. The frame of the rail flaw detection vehicle of the embodiment of the present application is simple and fast to assemble, and the structural strength and stability of the frame are also relatively high.

[0042] In implementation, such as Figure 1 , Figure 2 and Figure 3 As shown, the upper surface and the lower surface of the transition portion 122 gradually increase from the small end of the transition portion to the large end of the transition portion; that is, the upper surface and the lower surface of the transition portion are smooth curved surfaces, which can avoid stress concentration;

[0043] And / or the two side surfaces of the transition portion 122 gradually increase from the small end of the transition portion to the large end of the transition portion; that is, the two side surfaces of the transition portion between the upper surface and the lower surface are smooth curved surfaces, which can avoid stress concentration;

[0044] The end surface of the small end of the transition portion is consistent with the end surface of the bolster body, and the outer surface of the small end of the transition portion is flush with the outer surface of the bolster body.

[0045] In this way, after the small end of the transition part and the end face of the pillow beam body are fixed, the internal structures are relative and the outer surfaces are flush, and the force exerted on the pillow beam body can be transmitted to the transition part.

[0046] In implementation, such as Figure 1 As shown, the side beam 110 is a side beam with a U-shaped end surface, and the notches of the two side beams 110 are arranged opposite to each other;

[0047] The large end of the transition portion 122 is fixed to the bottom of the inner groove of the side beam 110 .

[0048] In this way, the inner groove bottom of the U-shaped side beam provides an installation space for the transition portion of the bolster beam, and also reserves an installation space for fixing the frame module and the side beam.

[0049] In implementation, such as Figure 4 and Figure 5 As shown, the frame module includes a traction beam module, and the traction beam module includes:

[0050] Traction beam main beam 210;

[0051] Two U-shaped traction fixing beams 220, the two traction fixing beams 220 are respectively fixed on two opposite sides of the traction beam main beam 210, and the notches of the two traction fixing beams 220 are opposite to each other;

[0052] A traction installation interface 230 is fixed to one end of the traction beam main beam 210;

[0053] The traction installation interface 230 is detachably fixedly connected to one of the pillow beams 120 , and the bottom of the traction fixing beam 220 is detachably fixedly connected to the two side beams 110 .

[0054] The traction beam main beam is the installation basis of the traction beam module. The traction fixed beam is fixed to the traction fixed beam, and the traction beam main beam and the traction beam fixed beam are fixed to form a Chinese-character structure. The two sides of the Chinese-character structure are the bottom of the traction fixed beam and the two side beams are detachably fixedly connected, so that the traction module can be stably connected to the frame body.

[0055] In implementation, such as Figure 4 and Figure 5As shown, the traction beam main beam 210 includes:

[0056] Two traction beam sub-beams 211 with U-shaped end faces, and the outer groove bottoms of the two traction beam sub-beams 221 are fixed back to back to form the traction beam main beam 210;

[0057] The traction fixed beam 220 includes:

[0058] A traction fixed beam longitudinal beam 221 with a U-shaped end surface;

[0059] Two traction fixed beam cross beams 222 with U-shaped end faces, the two traction fixed beam cross beams 222 are fixed to the two ends of the inner groove bottom of the traction fixed beam longitudinal beam 221, and the notches of the two traction fixed beam cross beams 222 are arranged opposite to each other;

[0060] Among them, one end of the traction fixed beam cross beam 222 away from the traction fixed beam longitudinal beam is fixed to the inner groove bottom of the traction beam sub-beam 211.

[0061] The outer groove bottoms of two traction beam sub-beams with U-shaped end faces are fixed back to back to form the traction beam main beam, and the inner groove bottoms of the two traction beam sub-beams with U-shaped end faces provide installation space for the traction fixed 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.

[0062] In implementation, such as Figure 4 and Figure 5 As shown, the frame further includes a front end coupler assembly 241 and a rear end coupler assembly 242;

[0063] There are two traction beam modules, wherein:

[0064] The front end coupler assembly 241 is fixed to the end of the traction beam main beam of a traction beam module away from the traction installation interface to form a front end traction beam module 201; that is, a traction beam module and a front end coupler assembly are combined to form a front end traction beam module;

[0065] The rear end coupler assembly 242 is fixed to the end of the traction beam main beam of another traction beam module away from the traction mounting interface to form a rear end traction beam module; that is, another traction beam module and the rear end coupler assembly are combined to form the rear end traction beam module 202.

[0066] In this way, as an integral front end traction beam module and as an integral rear end traction beam module, they can be conveniently fixed to the vehicle frame body and can also provide installation space for the installation of the coupler.

[0067] Specifically, the various components of the front-end traction beam module are fixed by welding, and the various components of the rear-end traction beam module are fixed by welding.

[0068] The front end traction beam module is welded and fixed, and the rear end traction beam module is welded and fixed, and the structure has high stability.

[0069] In implementation, such as Figure 6 and Figure 7 As shown, the frame module also includes a support module, and the support module includes:

[0070] A rectangular longitudinal support frame 310;

[0071] At least one transverse reinforcement beam 313, both ends of which are respectively fixed to the long frame side 311 of the longitudinal support frame, and the transverse reinforcement beam 313 is arranged parallel to the short frame side 312 of the longitudinal support frame;

[0072] At least one pair of U-shaped support fixing beams 320 are respectively fixed at opposite positions of two longer frame sides 311 of the longitudinal support frame, and the notches of the two support fixing beams 320 are opposite.

[0073] In this way, the two ends of the transverse reinforcement beam are respectively fixed to the long frame side of the longitudinal support frame and are arranged parallel to the short frame side of the longitudinal support frame, so that the frame structure formed by the longitudinal support frame and the transverse reinforcement beam is very stable. The bottom of the U-shaped support fixing beam is used as a position fixed to the side beam, providing a space for fixing the frame body for the support module.

[0074] The supporting module of the above structure has high structural stability.

[0075] In implementation, such as Figure 6 and Figure 7 As shown, 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 surface, 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 surface;

[0076] The two longitudinal support frame short frame sides 312 are arranged in parallel in a manner that the notches are arranged opposite to each other;

[0077] The two longitudinal support frame long frame sides 311 are arranged in parallel with the notches facing each other, and the two ends of the longitudinal support frame long frame sides 311 are fixed to the inner groove bottoms of the two longitudinal support frame short frame sides.

[0078] The inner groove bottom of the short frame side of the longitudinal support frame provides installation space for the long frame side of the longitudinal support frame, and the inner groove bottom of the long frame side of the longitudinal support frame provides installation space for the supporting fixed beam, so that the structure of the longitudinal support frame is simple and the stability is high, and the strength of the longitudinal support frame is also high.

[0079] In implementation, such as Figure 6 and Figure 7 As shown, the supporting fixed beam 320 includes:

[0080] A supporting fixed beam longitudinal beam 321 with a U-shaped end surface;

[0081] Two U-shaped support beam cross beams 322 are fixed to the two ends of the inner groove bottom of the support beam longitudinal beam 321, and the grooves of the two support beam cross beams 322 are arranged opposite to each other;

[0082] Among them, one end of the supporting and fixing beam cross beam 322 away from the supporting and fixing beam longitudinal beam 321 is fixed to the inner groove bottom of the long frame edge 311.

[0083] The U-shaped support fixing beam is formed by a support fixing beam longitudinal beam and two support fixing beam cross beams. The inner groove bottom of the support fixing beam longitudinal beam provides installation space for the two support fixing beam cross beams, and one end of the support fixing beam cross beam away from the support fixing beam longitudinal beam is fixed to the inner groove bottom of the long frame side. In this way, the support fixing beam itself has a simple and stable structure, and can also be conveniently fixed to the long frame side of the longitudinal support frame, so that the structure of the entire support module is simple, stable, and has high strength.

[0084] In implementation, such as Figure 6 As shown, the support module includes a unit support module 301;

[0085] The unit support module has one transverse reinforcement beam 313 and a pair of support fixing beams 320; wherein:

[0086] The transverse reinforcement beam 313 is located at the middle position of the inner side of the long frame side 311 of the longitudinal support frame;

[0087] The supporting fixed beam 320 is located in the middle of the outer side of the long frame edge 311 of the longitudinal supporting frame;

[0088] The unit support module is arranged in a region of the frame that supports the unit of the rail flaw detection vehicle.

[0089] In this way, the unit support module is a separate module, and its structural stability is high, and the structural strength can adapt to the function of the unit supporting the rail flaw detection vehicle. When the unit is upgraded, the corresponding unit support module can be replaced according to the unit, meeting the various needs of the rail flaw detection vehicle and realizing the reuse of the frame.

[0090] In implementation, such as Figure 7 As shown, the support module further includes a working device support module 302;

[0091] The working device support module has three transverse reinforcement beams 313 and two pairs of support fixed beams 320; wherein:

[0092] The three transverse reinforcement beams 313 are fixed at equal intervals on the inner side of the long frame side 311 of the longitudinal support frame;

[0093] Two pairs of the supporting fixed beams 313 are fixed at equal intervals on the outer side of the long frame side 311 of the longitudinal supporting frame;

[0094] The working device support module is arranged in a region of the vehicle frame that supports the working device of the rail flaw detection vehicle.

[0095] In this way, the working device support module is a separate module, and its structural stability is high, and the strength of the structure can adapt to the function of the working device supporting the rail flaw detection vehicle. In addition, the working device can be a multi-functional working device, and the structure and strength of the working device support module can be determined according to the weight of the working device. When the working device is upgraded, the corresponding working device support module can be replaced according to the working device to meet the needs of different functional interfaces of the frame and realize the multi-functional reuse of the frame.

[0096] In implementation, such as Figure 1 and Figure 8 As shown, the frame module further includes a transverse reinforcement module 400, and the transverse reinforcement module 400 includes:

[0097] A rectangular lateral support frame 410;

[0098] At least one longitudinal reinforcement beam 420, both ends of which are respectively fixed to the long frame sides of the transverse support frame 410, and the longitudinal reinforcement beam is arranged parallel to the short frame sides of the transverse support frame 410;

[0099] Wherein, the short frame side of the transverse support frame is detachably fixedly connected to the side beam 110 .

[0100] In this way, the lateral reinforcement module is used to reinforce the frame body in the lateral direction, so that the structural stability and strength of the frame are higher.

[0101] In implementation, such as Figure 1 and Figure 2 Vegetarian, the unit support modules 301 are two, the working device support module 302 is one; wherein:

[0102] The working device support module 302 is located between the two bolsters 120;

[0103] The two unit support modules 301 are respectively fixed on both sides of the working device support module;

[0104] The short frame side of the longitudinal support frame of the unit support module 301 and the short frame side of the longitudinal support frame of the working device support module 302 are fixed, and the transverse reinforcement module 400 is located on the short frame side of the longitudinal support frame of the unit support module 301 and the short frame side of the longitudinal support frame of the working device support module 302.

[0105] In this way, the working device support module is located inside the vehicle frame, and in particular, can be located in the middle of the vehicle frame, and the unit support modules are fixed on both sides of the working device support module, and the fixed unit support modules are also fixed to the bolster. The front end traction module and the rear end traction module are fixed on the outside of the two bolsters.

[0106] The frame is roughly a symmetrical structure centered on the working device support module.

[0107] In implementation, such as Figure 1 , Figure 2 and Figure 8 As shown, the frame further includes a plurality of detachable fixed connection components, the detachable fixed connection components including a U-shaped connection plate 510, a bolt 520, a rubber pad 530 and a locking nut, wherein the bolt 520 is a hexagonal bolt with a hole on the head;

[0108] The rubber pad 530 is placed at the bottom of the inner groove of the U-shaped connecting plate 510, and the screw rod of the bolt 520 passes through the two connected parts and the rubber pad 530 and is tightened and fixed with the locking nut;

[0109] Wherein, the two connected parts include a frame body and a frame module, and / or the two connected parts include two adjacent frame modules;

[0110] The end faces of the various components with U-shaped end faces have the same shape, wherein the various components with U-shaped end faces include side beams, traction beam sub-beams, traction fixed beam longitudinal beams, traction fixed beam cross beams, support fixed beam longitudinal beams and support fixed beam cross beams. That is, the various components with U-shaped end faces use cross-sectional profiles with the same specification of end faces, with a simple design, simple process and low manufacturing cost.

[0111] The detachable fixed connection assembly can conveniently realize the detachable fixed connection in the frame, and can realize quick assembly during assembly. When disassembly is required, disassembly can be conveniently realized.

[0112] As an optional implementation, Fig.10 and Fig.11 As shown, the bolster body 121 is a box-type bolster body 121;

[0113] The transition section comprises:

[0114] Two upper wing plates 122-1 are symmetrically fixed on the upper surface of the bolster body 121, the small ends of the two upper wing plates are arranged opposite to each other, and the large ends of the two upper wing plates are fixed on the inner side of the side beam;

[0115] The two lower wing plates 122 - 2 are symmetrically fixed on the lower surface of the bolster body 121 , the small ends of the two lower wing plates are arranged opposite to each other, and the large ends of the two lower wing plates are fixed on the inner side of the side beam.

[0116] The bolster is a separate structural member. The various components of the bolster are fixedly connected together and then connected to the side beams. This makes it easier to assemble and disassemble the bolster and the side beams, and subsequent maintenance is more convenient. The upper wing plate and the lower wing plate make it easier to fix the connection with the bolster body, and the fixed connection area with the side beams is larger, and the stability of the frame is stronger.

[0117] Specifically, the lower bottom of the bolster body 121 has a core plate hole.

[0118] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0119] In the present application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0120] In the present application and its embodiments, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0121] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0122] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0123] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these 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 also intended to include these modifications and variations.

Claims

1. A frame of a rail flaw detection vehicle, characterized in that: The vehicle comprises a frame body and at least one frame module, wherein the frame module is detachably fixedly connected to the frame body; the frame body comprises: two side beams arranged opposite to each other; A bolster, the bolster comprising a bolster body and a transition portion fixed at an end of the bolster body, the two ends of the transition portion are respectively a small end and a large end, the transition portion gradually becomes larger from the small end of the transition portion to the large end of the transition portion, and the small end of the transition portion is fixed to one end of the bolster body; Wherein, the large end of the transition portion is fixed on the inner side of the side beam; The frame module includes a traction beam module, and the traction beam module includes: Traction beam main beam; Two U-shaped traction fixing beams, the two traction fixing beams are respectively fixed on two opposite sides of the traction beam main beam, and the notches of the two traction fixing beams are opposite to each other; A traction installation interface, fixed to one end of the traction beam main beam; There are two bolsters, the traction installation interface is detachably fixedly connected to one of the bolsters, and the bottom of the traction fixed beam is detachably fixedly connected to the two side beams respectively; The frame module also includes a support module, and the support module includes: A rectangular longitudinal support frame; At least one transverse reinforcement beam, both ends of which are respectively fixed to the long frame sides of the longitudinal support frame, and the transverse reinforcement beam is arranged parallel to the short frame sides of the longitudinal support frame; At least one pair of U-shaped support fixing beams, wherein the pair of support fixing beams are respectively fixed to opposite positions of two longer frame sides of the longitudinal support frame; The various components of the traction beam module are fixed by welding.

2. The frame of the rail flaw detection vehicle according to claim 1, characterized in that: The upper surface and the lower surface of the transition portion gradually increase in size from the small end of the transition portion to the large end of the transition portion; and / or the two side surfaces of the transition portion gradually increase in size from the small end of the transition portion to the large end of the transition portion; The end surface of the small end of the transition portion is consistent with the end surface of the bolster body, and the outer surface of the small end of the transition portion is flush with the outer surface of the bolster body.

3. The frame of the rail flaw detection vehicle according to claim 1 or 2, characterized in that: The side beam is a side beam with a U-shaped end surface, and the notches of the two side beams are arranged opposite to each other; The large end of the transition portion is fixed at the bottom of the inner groove of the side beam.

4. The frame of the rail flaw detection vehicle according to claim 3, characterized in that: The traction beam main beam comprises: Two traction beam sub-beams with U-shaped end faces, the outer groove bottoms of the two traction beam sub-beams are fixed back to back to form the traction beam main beam; The traction fixed beam comprises: A traction fixed beam longitudinal beam with a U-shaped end surface; Two traction fixed beam cross beams with U-shaped end faces, the two traction fixed beam cross beams are fixed at two ends of the inner groove bottom of the traction fixed beam longitudinal beam, and the grooves of the two traction fixed beam cross beams are arranged opposite to each other; Wherein, one end of the traction fixed beam cross beam away from the traction fixed beam longitudinal beam is fixed to the inner groove bottom of the traction beam sub-beam.

5. The frame of the rail flaw detection vehicle according to claim 4, characterized in that: The vehicle frame also includes a front end coupler assembly and a rear end coupler assembly; There are two traction beam modules, wherein: A traction beam module traction beam main beam has one end away from the traction mounting interface to fix the front end coupler assembly to form a front end traction beam module; The rear end coupler assembly is fixed to one end of the traction beam main beam of another traction beam module away from the traction mounting interface to form a rear end traction beam module.

6. The frame of the rail flaw detection vehicle according to claim 5, characterized in that: The long frame side of the longitudinal support frame is a long frame side with a U-shaped end surface, and the short frame side of the longitudinal support frame is a short frame side with a U-shaped end surface; The two short frame sides are arranged in parallel in a manner that the notches are arranged opposite to each other; The two long frame sides are arranged in parallel with the notches facing each other, and the two ends of the long frame sides are fixed to the inner groove bottoms of the two short frame sides.

7. The frame of the rail flaw detection vehicle according to claim 6, characterized in that: The supporting fixed beam comprises: A supporting fixed beam longitudinal beam with a U-shaped end surface; Two U-shaped support beam cross beams, the two support beam cross beams are fixed at two ends of the inner groove bottom of the support beam longitudinal beam, and the grooves of the two support beam cross beams are arranged opposite to each other; Wherein, one end of the supporting and fixing beam cross beam away from the supporting and fixing beam longitudinal beam is fixed to the inner groove bottom of the long frame edge.

8. The frame of the rail flaw detection vehicle according to claim 7, characterized in that: The support module includes a unit support module; The unit support module has one transverse reinforcement beam and a pair of supporting fixed beams; wherein: The transverse reinforcement beam is located at the middle position of the inner side of the long frame; The supporting fixed beam is located in the middle of the outer side of the long frame; The unit support module is arranged in a region of the frame that supports the unit of the rail flaw detection vehicle.

9. The frame of the rail flaw detection vehicle according to claim 8, characterized in that: The support module also includes a working device support module; The working device support module has three transverse reinforcement beams and two pairs of support fixed beams; wherein: The three transverse reinforcement beams are fixed at equal intervals on the inner side of the long frame; Two pairs of the supporting fixed beams are fixed at equal intervals on the outer sides of the long frame; The working device support module is arranged in a region of the vehicle frame that supports the working device of the rail flaw detection vehicle.

10. The frame of the rail flaw detection vehicle according to claim 9, characterized in that: The frame module further includes a transverse reinforcement module, and the transverse reinforcement module includes: A rectangular lateral support frame; At least one longitudinal reinforcement beam, both ends of which are respectively fixed to the long frame sides of the transverse support frame, and the longitudinal reinforcement beam is arranged parallel to the short frame sides of the transverse support frame; Wherein, the short frame side of the transverse support frame is detachably fixedly connected to the side beam.

11. The frame of the rail flaw detection vehicle according to claim 10, characterized in that: It also includes a plurality of detachable fixed connection components, the detachable fixed connection components include a U-shaped connection plate, a bolt, a rubber pad and a locking nut, wherein the bolt is a hexagonal bolt with a hole on the head; The rubber pad is placed at the bottom of the inner groove of the U-shaped connecting plate, and the screw of the bolt passes through two connected parts and the rubber pad and is tightened and fixed with the anti-loosening nut; Wherein, the two connected parts include a frame body and a frame module, and / or the two connected parts include two adjacent frame modules; The end faces of the various components with U-shaped end faces have the same shape, wherein the various components with U-shaped end faces include side beams, traction beam sub-beams, traction fixed beam longitudinal beams, traction fixed beam cross beams, support fixed beam longitudinal beams and support fixed beam cross beams.

12. The frame of the rail flaw detection vehicle according to claim 1, characterized in that: The bolster body is a box-type bolster body; The transition section comprises: Two upper wing plates are symmetrically fixed on the upper surface of the bolster body, the small ends of the two upper wing plates are arranged opposite to each other, and the large ends of the two upper wing plates are fixed on the inner side of the side beam; Two lower wing plates are symmetrically fixed on the lower surface of the pillow beam body, the small ends of the two lower wing plates are arranged opposite to each other, and the large ends of the two lower wing plates are fixed on the inner side of the side beam.

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