CN113212480A

CN113212480A - Railway vehicle body bearing assembly, assembling method and railway vehicle

Info

Publication number: CN113212480A
Application number: CN202110533812.2A
Authority: CN
Inventors: 范乐天; 惠美玲; 张�林; 高倩倩; 刘书密; 宁杰; 杨明; 王力; 张雷; 吴胜权
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-08-06

Abstract

The invention provides a railway vehicle body bearing assembly, which belongs to the technical field of rail transit equipment and comprises a carriage and an underframe, wherein the bottom of the carriage is connected with a transition floor, and the bottom surface of the transition floor is provided with a first mounting position; the first mounting position is provided with a threaded connecting piece. The underframe is positioned below the carriage, the top of the underframe is provided with a connecting floor, and the connecting floor is provided with a second mounting position which is vertically corresponding to the first mounting position; when the carriage is assembled with the underframe, the threaded connector is fastened at the second mounting position so as to realize the connection of the carriage and the underframe. The invention also provides an assembly method of the railway vehicle body bearing assembly and a railway vehicle. The invention simplifies the assembly process of the underframe and the carriage, improves the assembly efficiency and also improves the general performance of the carriage and the underframe.

Description

Railway vehicle body bearing assembly, assembling method and railway vehicle

Technical Field

The invention belongs to the technical field of rail transit equipment, and particularly relates to a rail vehicle body bearing assembly, an assembly method of the rail vehicle body bearing assembly and a rail vehicle.

Background

The vehicle body of the railway vehicle is mainly formed by assembling and welding full-length large hollow aluminum alloy sections. The vehicle body bearing assembly structure is composed of an underframe, side walls, a roof, end walls and a cab module, so that the vehicle body has good vibration-proof and sound-proof effects. Most large-scale equipment and bogie all hang in the chassis lower surface, and the chassis needs to satisfy the passenger demand for the chassis bears great, and the structure is more complicated, also increases for other structure fault rates.

In the prior art, a side wall, an end wall and a roof are welded to form a carriage structure, an underframe and the side wall are also fixed in a welding mode, when the side wall, the roof and the underframe are assembled, the underframe needs to be adjusted and fixed at a tire position, then the side wall is assembled and welded by fixing the side wall through a tool, and then the roof is adjusted and assembled, so that the whole process is complex, more tools are needed, and the cost is high; in addition, a plurality of large-scale equipment are hung below the underframe, if a certain equipment has a fatal fault during the operation of the line, the train cannot operate, and the underframe is used as a bearing part and is welded with the side wall to form a whole and cannot be disassembled, so that only the faulty equipment can be replaced, one or even a plurality of pieces of equipment need to be disassembled for replacing the faulty equipment, the time consumption is long, and the operation of the line is seriously influenced.

Disclosure of Invention

The invention aims to provide a railway vehicle body bearing assembly, an assembling method and a railway vehicle, and aims to achieve the purposes of simplifying the assembling process of an underframe and a carriage, improving the assembling efficiency and improving the general performance of the carriage and the underframe.

In a first aspect, an embodiment of the present invention provides a rail vehicle body bearing assembly, including:

the bottom of the carriage is connected with a transition floor, and the bottom surface of the transition floor is provided with a first installation position;

the bottom frame is positioned below the carriage, the top of the bottom frame is provided with a connecting floor, and the connecting floor is provided with a second mounting position which is vertically corresponding to the first mounting position; and

the threaded connecting piece is arranged on the first mounting position;

when the carriage is assembled with the underframe, the threaded connector is fastened at the second mounting position so as to realize the connection of the carriage and the underframe.

In a possible implementation manner, the first installation position is a sliding groove formed in the bottom surface of the transition floor, and a plurality of threaded connecting pieces are arranged in the sliding groove in a sliding manner;

the second installation position is a strip hole formed in the connecting floor.

In some embodiments, at least two sliding chutes are arranged at equal intervals in the width direction of the carriage, and the sliding chutes penetrate through two ends of the transition floor along the length direction of the carriage; each sliding groove corresponds to at least one long hole which extends along the length direction of the carriage.

In some embodiments, a sliding block is slidably disposed in the sliding groove, a head of the threaded connector is located in the sliding block, and a screw portion of the threaded connector penetrates through the sliding block downward.

In a possible implementation manner, a positioning part for positioning the assembly position of the carriage and the underframe is further arranged between the transition floor and the connecting floor.

In some embodiments, the positioning portion includes a countersunk bolt hole formed in the transition floor, a through hole formed in the connection floor and corresponding to the countersunk bolt hole up and down, and a countersunk bolt sunk in the countersunk bolt hole;

when the carriage is assembled with the underframe, the countersunk head bolt penetrates through the through hole to realize the positioning of the carriage and the underframe.

In one possible implementation manner, the carriage comprises a roof, side walls and side beams;

the top ends of the side walls are welded to the side parts of the vehicle roof; the edge beam is welded at the bottom end of the side wall;

and the side walls and the side beams are provided with doorway areas.

In some embodiments, the transition floor is fixedly connected with the edge beam, and the transition floor and the edge beam are welded by inner and outer corner welding seams.

According to the scheme shown by the embodiment of the invention, the transition floor is additionally arranged at the bottom of the carriage, the connecting floor is arranged on the underframe, and the transition floor and the connecting floor are connected by the threaded connecting piece, so that the assembly of the underframe and the carriage is realized; in addition, the assembly operation of the carriage and the assembly operation of the underframe can adopt parallel procedures, so that the production efficiency is improved; the carriage can also carry different under frames, and the universality is improved.

The embodiment of the invention also provides the railway vehicle, which comprises the railway vehicle body bearing assembly.

The beneficial effects of the railway vehicle provided by the invention are the same as those of the railway vehicle body bearing assembly, and are not repeated herein.

In a second aspect, an embodiment of the present invention provides an assembling method of a railway vehicle bearing assembly, including:

welding a transition floor at the bottom of a carriage, and arranging a first installation position on the transition floor; installing a plurality of threaded connectors on the first installation site;

welding a connecting floor at the top of the underframe, and arranging a second mounting position on the connecting floor; the second mounting position is used for corresponding to the second mounting position up and down;

enabling the underframe to be positioned below the carriage, and enabling the second installation position and the first installation position to correspond up and down; and respectively fastening a plurality of the threaded connecting pieces to the second mounting positions.

According to the scheme shown by the embodiment of the invention, the transition floor is welded at the bottom of the carriage, the floor is welded and connected at the top of the underframe, and the underframe is fastened at the second mounting position by using a threaded connector, so that the underframe is connected with the carriage; compared with the prior art, the assembly operation of carriage and the assembly operation of chassis can adopt parallel process, have promoted production efficiency, and the assembly process is simple, has reduced the use of location frock and fixed frock, the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an exploded view of a railway vehicle body carrier assembly according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional structural view of a railway vehicle body bearing assembly according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at circle A;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2 at circle B;

FIG. 5 is a schematic illustration of the structure of the wagon of FIG. 2;

FIG. 6 is a schematic structural view of the chassis of FIG. 2;

FIG. 7 is an enlarged view of the circle D in FIG. 5

FIG. 8 is an enlarged schematic view of the structure of FIG. 1 taken at circle C;

fig. 9 is a process flow diagram of an assembly method of a railway vehicle load bearing assembly according to an embodiment of the present invention.

In the figure: 1. a carriage; 11. a transition floor; 111. a first mounting location; 12. roof, 13, side walls; 14. a boundary beam; 15. a doorway area; 2. a chassis; 21. connecting the floor; 211. a second mounting location; 3. a threaded connection; 31. a slider; 4. a positioning part; 41. countersunk bolt holes; 42. a through hole; 43. a countersunk head bolt.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2 together, the present invention will now be described with respect to a railway vehicle body support assembly. The railway vehicle body bearing assembly comprises a carriage 1, an underframe 2 and a threaded connecting piece 3. The bottom of the carriage 1 is connected with a transition floor 11, and the bottom surface of the transition floor 11 is provided with a first installation position 111; the underframe 2 is positioned below the carriage 1, the top of the underframe is provided with a connecting floor 21, and the connecting floor 21 is provided with a second mounting position 211 which is vertically corresponding to the first mounting position 111; the threaded connection 3 is arranged on the first mounting location 111. Wherein, when the carriage 1 is assembled with the underframe 2, the threaded connector 3 is fastened at the second mounting position 211 to realize the connection between the carriage 1 and the underframe 2.

The concrete assembling steps of the railway vehicle body bearing assembly provided by the invention are shown in fig. 9:

s1, welding a transition floor 11 at the bottom of the carriage 1, and arranging a first installation position 111 on the transition floor 11; mounting a plurality of threaded connectors 3 on the first mounting locations 111;

s2, welding the connecting floor 21 on the top of the underframe 2, and arranging a second mounting position 211 on the connecting floor 21; the second installation position 211 is required to correspond to the second installation position 211 up and down;

s3, the underframe 2 is positioned below the carriage 1, and the second mounting position 211 and the first mounting position 111 vertically correspond to each other; the plurality of screw connectors 3 are fastened to the second mounting locations 211, respectively.

It should be noted that, the step S1 and the step S2 may be performed simultaneously, or may be performed sequentially, and the step S1 and the step S2 are not in sequence; after completion of steps S1 and S2, step S3 is performed.

The assembly of the components of the vehicle body 1 may be performed in common with step S1, and the assembly of the parts of the underframe 2 and the installation of the large-sized equipment and the bogie under the underframe 2 may be performed in common with step S2.

Furthermore, the transition floor 11 also functions as a vehicle body floor of a conventional railway vehicle for seating and walking.

According to the railway vehicle body bearing assembly provided by the invention, the transition floor 11 is additionally arranged at the bottom of the carriage 1, the connecting floor 21 is arranged on the underframe 2, and the transition floor 11 and the connecting floor 21 are connected by the threaded connecting piece 3, so that the assembly of the underframe 2 and the carriage 1 is realized; the assembly operation of the carriage 1 and the assembly operation of the underframe 2 can adopt parallel procedures, so that the production efficiency is improved; the carriage 1 can also be provided with different under frames 2, so that the general performance is improved. By replacing the carriage 1, the integrated loading of the passenger and goods of the train is realized. According to the use requirement of the train, carriages 1 with different functions are assembled above the underframe 2, a certain carriage 1 carries passengers, and a certain carriage 1 carries the passengers. The passenger carriage 1 has no large-scale luggage accumulation, and improves the comfort level and the passenger capacity of passengers. The cargo carrying compartment 1 is an unmanned area, the inside installation is simple, and the cargo carrying capacity is large. The multifunctional performance of the train is realized.

In addition, in the prior art, the underframe 2 and the carriage 1 are welded by adopting an outer v-shaped weld joint and an inner v-shaped weld joint so as to ensure that the appearance of the vehicle body is smooth, the v-shaped weld joints are usually arranged, and the carriage 1 or the underframe 2 generates welding deformation due to welding heat input, so that the subsequent assembly process is influenced. In this embodiment, the transition floor 11 and the car 1 are preferably welded by inner and outer fillet welds, and the transition floor 11 is located inside the car 1, as shown in fig. 5, there is no weld on the outer side of the car 1, so as to reduce the deformation of the car body caused by the welding heat input.

In some embodiments, the first and second mounting

locations

111 and 211 may be configured as shown in fig. 2 to 7. Referring to fig. 3, 5 and 7, the first installation site 111 is a sliding slot formed on the bottom surface of the transition floor 11, and a plurality of threaded connectors 3 are slidably disposed in the sliding slot. Referring to fig. 3 and 6, the second installation position 211 is a long hole formed on the connecting floor 21.

The sliding groove penetrates through the bottom surface of the transition floor 11 downwards, but does not penetrate through the top surface of the transition floor 11, so that the structure of the top surface, namely the bearing surface, of the transition floor 11 is not damaged, and the aesthetic property of the transition floor 11 is kept. The elongated hole penetrates the floor 21 in the vertical direction, and the extending direction of the elongated hole is the same as the extending direction of the sliding groove.

Between the assembly of the carriage 1 and the underframe 2, the threaded connector 3 is slidingly arranged in the chute. In the butt joint process of the carriage 1 and the underframe 2, the sliding grooves vertically correspond to the strip holes, and the threaded connecting piece 3 penetrates through the strip holes to realize fastening.

In particular, during assembly, the threaded connector 3 may adopt a connection mode of matching a bolt and a nut. The nut may be welded and fixed to the bottom surface of the connection floor 21 in advance and aligned with the elongated hole. The bottom wall of the chute can be designed with a positioning groove, so that the position of the positioning groove corresponds to the position of the nut up and down.

The threaded connecting piece 3 is installed by the sliding groove and the strip hole, the assembling mode is simple, the sliding groove and the strip hole are easy to machine and form, and the manufacturing process is simplified.

Specifically, at least two sliding grooves are arranged at equal intervals along the width direction of the carriage 1, and the sliding grooves penetrate through two ends of the transition floor 11 along the length direction of the carriage 1; each sliding groove corresponds to at least one long hole extending along the length direction of the carriage 1.

At least two sliding grooves are arranged at equal intervals and used for ensuring the stress balance of the transition floor 11 and the connection floor 21 after assembly, and the phenomena of fastening on one side and tilting on the other side can not occur. The slide groove penetrates the transition floor 11 in the longitudinal direction of the car 1 so that the threaded connector 3 fits into the slide groove.

Specifically, a sliding block 31 is slidably disposed in the sliding groove, the head of the threaded connector 3 is located in the sliding block 31, and the screw portion of the threaded connector 3 passes through the sliding block 31 downward, as shown in fig. 3. The structure of slider 31 and the slot cavity structure looks adaptation of spout, slider 31 are used for driving threaded connection spare 3 and slide in the spout, avoid threaded connection spare 3 to be worn and torn.

In some embodiments, the transition floor 11 and the connecting floor 21 may also be configured as shown in fig. 2 and 4. Referring to fig. 2 and 4, a positioning portion 4 for positioning the assembly position of the car 1 and the underframe 2 is further provided between the transition floor 11 and the connecting floor 21. The positioning portion 4 is used to achieve preliminary positioning of the vehicle compartment 1 and the underframe 2.

Specifically, the positioning portion 4 includes a countersunk bolt hole 41 opened in the transition floor 11, a through hole 42 opened in the connection floor 21 to correspond to the countersunk bolt hole 41 up and down, and a countersunk bolt 43 countersunk in the countersunk bolt hole 41. Wherein, when the carriage 1 is assembled with the underframe 2, the countersunk head bolt 43 passes through the through hole 42 to realize the positioning of the carriage 1 and the underframe 2.

The countersunk bolt hole 41 is preferably formed at the center point of the transition floor 11 as shown in fig. 5, and the through hole 42 is preferably formed at the center point of the junction floor 21 as shown in fig. 6. The positioning of the center point ensures that the transition floor 11 and the connecting floor 21 are positioned in the horizontal plane. The carriage 1 or the underframe 2 is adjusted slightly, so that the positioning of the carriage 1 and the underframe 2 along the length direction of the carriage 1 can be ensured.

In some embodiments, the car 1 may have a structure as shown in fig. 5 and 8. Referring to fig. 5 and 8, the vehicle compartment 1 includes a roof 12, side walls 13, and side sills 14. The top ends of the side walls 13 are welded to the side portions of the roof 12; the edge beam 14 is welded at the bottom end of the side wall 13; the side walls 13 and the side beams 14 are provided with doorway areas 15.

In the prior art, an upper doorway area is processed on the side wall 13, a lower doorway area is processed on the upper portion of the side surface of the underframe 2, and when the side wall 13 and the underframe 2 are assembled, the upper doorway area needs to be aligned with the center of the lower doorway area and the center of a vehicle body, so that the assembly difficulty is high.

In this embodiment, on the basis of not changing the structure of the side wall 13, the edge beam 14 is welded to the bottom of the side wall 13, so that the edge beam 14 and the side wall 13 are assembled and welded into a whole, and then the doorway area 15 is processed. On the one hand, the assembly difficulty is simplified, and on the other hand, the machining precision of the doorway area 15 can be ensured, and the doorway area 15 can meet the design requirements.

The edge beam 14 is positioned above the underframe 2, and the two have no connection relationship and do not interfere with each other.

Specifically, the transition floor 11 and the edge beam 14 are fixedly connected, and the transition floor 11 and the edge beam 14 are welded by inner and outer corner welds. The transition floor 11 does not need to be welded with the side wall 13, and the stability of the side wall 13 is further improved.

Based on the same inventive concept, the embodiment of the application also provides a railway vehicle, which comprises the railway vehicle body bearing assembly.

According to the railway vehicle provided by the embodiment of the invention, the assembly process of the carriage 1 and the underframe 2 is simple, the efficiency is high, different carriages 1 can be matched with different underframe 2, and the universality is good.

Based on the same inventive concept, the embodiment of the present application further provides an assembling method of a railway vehicle body bearing assembly, including the following steps shown in fig. 9:

According to the assembly method of the railway vehicle body bearing assembly, the transition floor 11 is welded at the bottom of the carriage 1, the connecting floor 21 is welded at the top of the underframe 2, and the connecting floor is fastened to the second mounting position 211 by using the threaded connecting piece 3, so that the connection between the underframe 2 and the carriage 1 is realized; compared with the prior art, the assembly operation of the carriage 1 and the assembly operation of the underframe 2 can adopt parallel processes, the production efficiency is improved, the assembly process is simple, the use of a positioning tool and a fixing tool is reduced, and the cost is reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Railway vehicle automobile body bears assembly, its characterized in that includes:

the threaded connecting piece is arranged on the first mounting position;

2. The rail vehicle car body carrier assembly of claim 1, wherein said first mounting location is a slot cut into a bottom surface of said transition floor, said slot having a plurality of said threaded connectors slidably disposed therein;

3. The rail vehicle car body carrier assembly of claim 2, wherein said runners are equally spaced in the width direction of said car and extend through both ends of said transition floor in the length direction of said car; each sliding groove corresponds to at least one long hole which extends along the length direction of the carriage.

4. The rail vehicle body carrier assembly of claim 2, wherein a slider is slidably disposed within said channel, a head portion of said threaded connector being disposed within said slider, and a shank portion of said threaded connector passing downwardly through said slider.

5. The rail vehicle body carrier assembly of claim 1, wherein a positioning portion is further provided between the transition floor and the connecting floor for positioning the assembly location of the car to the underframe.

6. The rail vehicle body carrying assembly of claim 5, wherein the positioning portion comprises:

the countersunk bolt hole is formed in the transition floor;

the through hole is formed in the connecting floor and is used for corresponding to the countersunk bolt hole up and down; and

the countersunk head bolt is sunk in the countersunk head bolt hole;

7. The rail vehicle body carrier assembly of claim 1, wherein said car includes:

a vehicle roof;

the top end of the side wall is welded to the side part of the vehicle roof; and

the edge beam is welded at the bottom end of the side wall;

and the side walls and the side beams are provided with doorway areas.

8. The rail vehicle body carrier assembly of claim 7, wherein said transition floor panel is fixedly attached to said side rails and wherein said transition floor panel is welded to said side rails using inner and outer corner welds.

9. Railway vehicle, characterized in that it comprises a railway vehicle body carrying assembly according to any one of claims 1 to 8.

10. The assembly method of the railway vehicle body bearing assembly is characterized by comprising the following steps: