Multifunctional inwards-bent bow beam for rail transit equipment

Abstract

The invention relates to the technical field of rail transit equipment, and particularly discloses a multifunctional inward-bending bow beam for rail transit equipment, which comprises a beam body, connecting end blocks are arranged at the left end and the right end of the beam body, the beam body and the connecting end blocks are integrally formed and are in an inward-bending shape, and the beam body and the connecting end blocks are formed by compounding a plurality of layers of carbon fiber prepregs. A plurality of second penetrating holes are formed in the upper end direction and the lower end direction of the middle portion of the beam body, rectangular holes are formed in the left end direction and the right end direction of the two connecting end blocks, bolt holes are formed in the front ends of the connecting end blocks and communicate with the rectangular holes, a module mounting component is arranged at the middle end of the beam body, and fixing components are arranged at the outer ends of the two connecting end blocks. The module mounting component comprises a connecting sleeve which is in a U shape, and the module mounting component is suitable for a vehicle body structure supporting component of rail transit equipment such as a high-speed train, a light rail and a subway, and has the functions of light weight, high strength, fatigue resistance and dynamic deformation monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit equipment, and specifically provides a multi-functional inner curved bow beam for rail transit equipment. Background Art

[0002] At present, with the rapid development of rail transit, the requirements for equipment performance and lightweight are becoming increasingly stringent. Fiber composite materials represented by carbon fiber, with their excellent properties such as light weight, high strength, corrosion resistance, and fatigue resistance, are continuously expanding their applications in the field of rail transit, gradually extending from the initial vehicle interior to key parts such as the driver's cab, bogie, equipment compartment, and even the car body.

[0003] As the core component of train vehicles, traditional bogies are mostly welded from steel, and their weight accounts for about 30% - 40% of the total vehicle weight. The heavy mass not only increases the energy consumption of train operation but also causes greater pressure on infrastructure such as tracks, restricting the improvement of train speed and efficiency. Therefore, reducing the weight of the vehicle body is of great significance. The inner curved bow beam, as an important part of the vehicle body, plays a key role in supporting the operation of the carriage and transmitting traction and braking forces.

[0004] However, the existing inner curved bow beams have certain limitations in terms of materials and structures. The traditional metal inner curved bow beams, although having a certain strength, are heavy and difficult to meet the development trend of lightweight in rail transit. Some of the applied composite inner curved bow beams still need to be improved in terms of strength and multi-functionality. For example, their load-bearing capacity under complex working conditions is insufficient, and they cannot meet multiple functional requirements simultaneously, such as having shortcomings in impact resistance, shock absorption, and adapting to different operating environments. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-functional inner curved bow beam for rail transit equipment to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A multi-functional inner curved bow beam for rail transit equipment, comprising: a beam body, both left and right ends of the beam body are provided with connecting end blocks, the beam body and the connecting end blocks are integrally formed and in an inner curved shape, the beam body and the connecting end blocks are composed of multiple layers of carbon fiber prepreg composites, several perforations two are opened in the upper and lower directions of the middle part of the beam body, rectangular holes are opened in the left and right directions of both connecting end blocks, bolt holes are opened at the front ends of the connecting end blocks, and the bolt holes are communicated with the rectangular holes; The middle end of the beam body is provided with a module installation component, and the outer ends of both connecting end blocks are provided with fixing components. The module installation component includes a connecting sleeve, the connecting sleeve is in a U shape, and an extended edge extending outward is arranged on the outer side of the outer end of the connecting sleeve. The connecting sleeve is sleeved on the outer wall of the beam body and fixed through a connecting mechanism. The outer end of the extended edge is provided with a mounting plate through a first fixing bolt, and the mounting plate is located on the outer side of the beam body.

[0007] Preferably, the mounting plate is in a U shape, the mounting plate is sleeved on the outer side of one end of the extended edge, and a plurality of threaded sleeves are fixedly installed on the outer walls of both the mounting plate and the extended edge. One end of the first fixing bolt passes through the side walls of the upper and lower ends of the mounting plate and is threadedly connected to the inner wall of the threaded sleeve on the extended edge.

[0008] Preferably, the connecting mechanism includes a first through hole, a shielding plate, a plugging plate and a moving plate. When the connecting sleeve is sleeved on the outer wall of the middle part of the beam body, the first through hole and the second through hole are communicated. There are two shielding plates, both of which are in an L shape. The two shielding plates are respectively fixedly installed on the inner walls of the left and right sides of the extended edge. A limiting hole is opened at the upper end of each shielding plate, and a downwardly inclined guiding plate is fixedly installed at the front end of each shielding plate.

[0009] Preferably, plugging columns are fixedly installed on the four sides of the lower end of the moving plate. The diameter of the plugging column is smaller than the inner diameters of the first through hole and the second through hole. A spring is sleeved on the upper end of each plugging column, and the upper end of the spring is fixedly connected to the lower end of the moving plate. The lower end of the plugging column slides through the first through hole and the second through hole. Positioning plates are fixedly installed on the upper sides of the left and right ends of the plugging plate. A positioning hole is opened on the side wall of the positioning plate. The size of the limiting hole is larger than the size of the positioning plate. One end of the plugging plate is inserted into the lower ends of the two shielding plates through the guiding plate. At the same time, the lower end of the plugging plate contacts the upper end of the moving plate. The moving plate moves downward by squeezing the spring, and under the reaction force of the spring, the limiting hole is sleeved on the outside of the positioning plate.

[0010] Preferably, a limiting block is fixedly installed at the middle part of the upper end of the plugging plate. Guide frames are fixedly installed on the left and right sides of the upper end of the plugging plate. A plug plate is slidably connected in the guide frame. One end of the plug plate is inserted into the positioning hole on the positioning plate, and the other end is fixedly installed with a push plate. A return spring is connected between the push plate and the limiting block.

[0011] Preferably, the fixing component includes a first docking frame, a second docking frame and a second fixing bolt. Both the first docking frame and the second docking frame are rectangular. The sizes of the first docking frame and the second docking frame are smaller than the size of the rectangular hole. Shielding frames are fixedly installed at the outer ends of both the first docking frame and the second docking frame. A rubber pad is fixedly installed on the inner wall of the shielding frame. A connecting frame is fixedly installed at the inner end of the first docking frame. Threaded holes one are opened at the front and rear ends of the connecting frame. Threaded holes two are opened at the front and rear sides of the inner end of the first docking frame. Threaded holes three are opened at the front and rear sides of the inner end of the second docking frame.

[0012] Preferably, the first docking frame is inserted into the left end of the rectangular hole, the second docking frame is inserted into the right side of the rectangular hole, and at the same time, the connecting frame is inserted into the inner side of the second docking frame. The threaded hole three and the threaded hole one are connected through the pressing rubber pad. One end of the fixing bolt two passes through the bolt hole and is threadedly connected to the inner wall of the threaded hole two or the threaded hole three and the threaded hole one.

[0013] Preferably, a bottom plate is fixedly installed at the lower end of each of the shielding frames. The two bottom plates are arranged in a cross shape. Circular holes are opened at the left and right ends of the two bottom plates. An adjusting spring is fixedly installed at the lower end of the bottom plate located at the lower end. The lower end of the adjusting spring is fixedly installed with an adjusting plate. Fixing columns are fixedly installed on the four sides of the upper end of the adjusting plate. A guiding slope is opened at the upper end of the fixing column. The upper end of the fixing column passes through the two circular holes.

[0014] Preferably, a support plate is fixedly installed on the outer side of the lower end of each of the bottom plates. The lower ends of the two support plates are fixedly installed with a fixing plate. A number of mounting holes are evenly fixedly installed on the side walls of the upper and lower ends of the fixing plate.

[0015] Preferably, a number of reinforcing blocks are fixedly installed at the connection of each of the support plates, the bottom plates and the fixing plates.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. High strength and lightweight: The use of carbon fiber composite materials and a unique reinforcing rib structure design enables the inner curved bow beam to achieve significant lightweight while ensuring high strength compared to traditional metal bow beams, effectively reducing the operating energy consumption of the train. 2. Multifunctional integration: The design of the integrated functional module installation groove in the middle facilitates the installation of multifunctional modules such as sensors and communication equipment, realizes the real-time monitoring and data transmission of the operating state of the bow beam, and improves the intelligent level and operating safety of rail transit equipment. 3. High precision and stability: Through advanced mold design and manufacturing technology and precisely controlled preparation processes, the high-precision forming and structural stability of the inner curved bow beam are ensured, reducing the risk of failures caused by dimensional deviations and internal defects. Through optimized mold design and precise lay-up processes, combined with autoclave curing forming technology, high-precision forming of the inner curved beam can be achieved, effectively reducing the generation of internal defects and improving the quality and reliability of the product. 4. Good protection performance: The surface protection coating endows the inner curved bow beam with excellent properties such as antistatic, wear-resistant and weather-resistant. The fatigue life is ≥ 10 7 cycles, and the salt spray corrosion resistance level reaches grade 9 of GB / T 1771-2007, extending the service life of the bow beam and reducing the maintenance cost. 5. Strong customizability: According to different usage scenarios and mechanical property requirements, the ply angles, sequences, and numbers of carbon fiber prepregs, as well as the structures and distributions of stiffeners, can be flexibly adjusted to achieve personalized customization of the inner curved beam. Description of the Drawings

[0017] Figure 1 Rear view of the overall structure of the present invention; Figure 2 Front view of the overall structure of the present invention; Figure 3 Bottom view of the overall structure of the present invention; Figure 4 Schematic diagram of the module installation component and the beam body unfolding of the present invention; Figure 5 Schematic diagram of the structure of the module installation component of the present invention; Figure 6 Schematic diagram of the connection end block and the fixing component unfolding of the present invention; Figure 7 Schematic diagram of the structure of the fixing component of the present invention Figure 8 Schematic diagram of the unfolded structure of the fixing component of the present invention.

[0018] In the figures: 1. Beam body; 2. Connection end block; 3. Connection sleeve; 4. Extension edge; 5. Installation plate; 6. First perforation; 7. Shading plate; 8. Guide plate; 9. Limit block; 10. Insertion plate; 11. Limit hole; 12. Guide slope; 13. Moving plate; 14. Insertion column; 15. Spring; 16. Threaded sleeve; 17. First fixing bolt; 18. Second perforation; 19. Rectangular hole; 20. Bolt hole; 21. First docking frame; 22. Connection frame; 23. First threaded hole; 24. Second threaded hole; 25. Second docking frame; 26. Third threaded hole; 27. Rubber pad; 28. Shading frame; 29. Second fixing bolt; 30. Bottom plate; 31. Support plate; 32. Fixing plate; 33. Reinforcing block; 34. Installation hole; 35. Round hole; 36. Adjusting plate; 37. Adjusting spring; 38. Fixed shaft; 39. Guide frame; 40. Positioning plate; 41. Insertion plate; 42. Pushing plate; 43. Reset spring; 101. Module installation component; 201. Fixing component. Detailed Description of the Invention

[0019] In order to clearly and completely describe the objectives, technical solutions of the present invention, and make the advantages more clearly understood, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] Embodiment 1 See also Figures 1-8 The present invention provides a technical solution: a multifunctional inward-bending bow beam for rail transit equipment, comprising: a beam body 1, connecting end blocks 2 are arranged at both ends of the left and right ends of the beam body 1, the beam body 1 and the connecting end blocks 2 are integrally formed and inward-bending, the beam body 1 and the connecting end blocks 2 are composited by multiple layers of carbon fiber prepreg, and a plurality of high-precision positioning holes and connecting threaded tubes are distributed on the lower end side wall of each connecting end block 2, a plurality of through holes 18 are opened in the upper and lower end directions of the middle part of the beam body 1, and rectangular holes 19 are opened in the left and right end directions of the two connecting end blocks 2, and two bolt holes 20 are opened at the front end of each connecting end block 2, and the bolt holes 20 are connected to the rectangular holes 19, and a plurality of reinforcing rib structures are also arranged inside the bow beam, and the reinforcing ribs are made of high-strength carbon fiber woven belts, and are staggered along the length direction and the inward bending curvature direction of the bow beam, which greatly improves the overall strength and deformation resistance of the bow beam, and in addition, a protective coating with antistatic, wear-resistant and weather-resistant properties is coated on the surface of the bow beam; A module installation component 101 is provided at the middle end of the beam body 1, which is used to install multifunctional modules such as sensors and communication equipment to realize functions such as real-time monitoring of the operating status of the bow beam and data transmission. The module installation component 101 includes a connecting sleeve 3, which is U-shaped. An extension edge 4 extending outward is provided on the outer side of the outer end of the connecting sleeve 3. The connecting sleeve 3 is sleeved on the outer wall of the beam body 1 and fixed by a connecting mechanism. The outer end of the extension edge 4 is installed with a mounting plate 5 through a fixing bolt 17. The mounting plate 5 is located on the outer side of the beam body 1. The mounting plate 5 is U-shaped. The mounting plate 5 is sleeved on the outer side of one end of the extension edge 4. Several threaded sleeves 16 are fixedly installed on the outer walls of the mounting plate 5 and the extension edge 4. One end of the fixing bolt 17 passes through the side walls of the upper and lower ends of the mounting plate 5 and is threadedly connected to the inner wall of the threaded sleeve 16 on the extension edge 4 to fix the mounting plate 5 on the outer wall of the extension edge 4. Multifunctional modules such as sensors and communication equipment can be installed on the outer wall of the mounting plate 5 through the threaded sleeve 16 on the mounting plate 5.

[0021] The connecting mechanism includes a first through hole 6, a shielding plate 7, a plugging plate 10 and a moving plate 13. When the connecting sleeve 3 is sleeved on the outer wall of the middle part of the beam body 1, the first through hole 6 and the second through hole 18 are communicated. There are two shielding plates 7, both of which are L-shaped. The two shielding plates 7 are respectively fixedly installed on the inner walls of the left and right sides of the extension edge 4. A limiting hole 11 is opened at the upper end of each shielding plate 7. A guiding plate 8 inclined downward is fixedly installed at the front end of each shielding plate 7. Plugging columns 14 are fixedly installed on the four sides of the lower end of the moving plate 13. The diameter of the plugging column 14 is smaller than the inner diameters of the first through hole 6 and the second through hole 18. A spring 15 is sleeved on the upper end of each plugging column 14. The upper end of the spring 15 is fixedly connected to the lower end of the moving plate 13. The lower end of the plugging column 14 slides through the first through hole 6 and the second through hole 18. By pushing the moving plate 13 downward, the moving plate 13 drives the plugging column 14 to move downward by squeezing the spring 15, so that the lower end of the plugging column 14 passes through the lower end of the connecting sleeve 3.

[0022] Positioning plates 40 are fixedly installed on the upper sides of the left and right ends of the plugging plate 10. Positioning holes are opened on the side walls of the positioning plates 40. The size of the limiting hole 11 is larger than the size of the positioning plate 40. When one end of the plugging plate 10 is inserted into the lower ends of the two shielding plates 7 through the guiding plate 8, at the same time, the lower end of the plugging plate 10 contacts the upper end of the moving plate 13 and pushes the moving plate 13 downward. The moving plate 13 moves downward by squeezing the spring 15. Under the reaction force of the spring 15, the limiting hole 11 is sleeved on the outside of the positioning plate 40, thereby fixing the plugging plate 10. A limiting block 9 is fixedly installed at the middle part of the upper end of the plugging plate 10. Guide frames 39 are fixedly installed on the left and right sides of the upper end of the plugging plate 10. A plug plate 41 is slidably connected in the guide frame 39. One end of the plug plate 41 is inserted into the positioning hole on the positioning plate 40, and the other end is fixedly installed with a push plate 42. A return spring 43 is connected between the push plate 42 and the limiting block 9. One end of the return spring 43 is fixedly connected to the push plate 42, and the other end is fixedly connected to the limiting block 9. When the return spring 43 is in a balanced state, one end of the plug plate 41 is inserted into the positioning hole on the positioning plate 40. When installing the plugging plate 10, first use two fingers to pinch the two push plates 42 inward, so that the push plates 42 drive the plug plate 41 to separate from the positioning plate 40, and then the plugging plate 10 can be inserted between the two shielding plates 7. When the positioning plate 40 passes through the limiting hole 11, release the hand. Under the reaction force of the return spring 43, one end of the plug plate 41 is inserted into the positioning hole on the positioning plate 40, thereby fixing the connecting sleeve 3 on the beam body 1.

[0023] The plug-in board 10 squeezes the moving board 13, so that the plug-in column 14 fixes the connecting sleeve 3 and the mounting plate 5 on the outer wall of the beam body 1. When it is necessary to disassemble and assemble the connecting sleeve 3 and the mounting plate 5, first separate the plate 41 and the positioning plate 40, then push the plug-in board 10 downward and then outward, so that the plug-in board 10 is pushed out from the lower ends of the two shielding boards 7, and then the moving board 13 and the plug-in column 14 can be lifted upward, and the connecting sleeve 3 can be removed from the beam body 1, which facilitates the disassembly and assembly of the connecting sleeve 3.

[0024] Fixed components 201 are provided at the outer ends of both connecting end blocks 2. The connecting end blocks 2 are connected to other components of the rail transit equipment through the fixed components 201. The fixed components 201 include a first docking frame 21, a second docking frame 25, and a second fixing bolt 29. Both the first docking frame 21 and the second docking frame 25 are rectangular. The sizes of the first docking frame 21 and the second docking frame 25 are smaller than the size of the rectangular hole 19. Shading frames 28 are fixedly installed at the outer ends of both the first docking frame 21 and the second docking frame 25. The size of the shading frame 28 is larger than the size of the rectangular hole 19. Rubber pads 27 are fixedly installed on the inner walls of the shading frames 28. A connecting frame 22 is fixedly installed at the inner end of the first docking frame 21. Threaded holes one 23 are provided at the front and rear ends of the connecting frame 22. Threaded holes two 24 are provided at the front and rear sides of the inner end of the first docking frame 21. Threaded holes three 26 are provided at the front and rear sides of the inner end of the second docking frame 25. When the first docking frame 21 is inserted into the left end of the rectangular hole 19 and the second docking frame 25 is inserted into the right side of the rectangular hole 19, and at the same time the connecting frame 22 is inserted into the inner side of the second docking frame 25, the first docking frame 21 and the second docking frame 25 are connected together. A bottom plate 30 is fixedly installed at the lower end of each shading frame 28. The two bottom plates 30 are arranged crosswise. Round holes 35 are provided at the left and right ends of both bottom plates 30. An adjusting spring 37 is fixedly installed at the lower end of the bottom plate 30 located at the lower end. An adjusting plate 36 is fixedly installed at the lower end of the adjusting spring 37. Fixing columns 38 are fixedly installed on the four sides of the upper end of the adjusting plate 36. A guiding slope is provided at the upper end of the fixing column 38. The upper end of the fixing column 38 passes through the two round holes 35. When the first docking frame 21 and the second docking frame 25 are inserted into the rectangular hole 19, the two bottom plates 30 are inserted in a staggered manner. The bottom plate 30 located at the upper end pushes the fixing column 38 downward. The fixing column 38 moves downward by stretching the adjusting spring 37. When the round hole 35 moves to the upper end of the fixing column 38, under the reaction force of the adjusting spring 37, the fixing column 38 moves upward and is inserted into the round hole 35. At the same time, the connecting frame 22 is inserted into the second docking frame 25, initially fixing the first docking frame 21 and the second docking frame 25 in the rectangular hole 19. At this time, the threaded hole three 26 and the threaded hole one 23 are communicated. Then, one end of one second fixing bolt 29 passes through one of the bolt holes 20 and is threadedly connected to the inner wall of the threaded hole two 24. One end of the other second fixing bolt 29 passes through the other bolt hole 20 and is threadedly connected to the inner walls of the threaded hole three 26 and the threaded hole one 23, fixing the first docking frame 21 and the second docking frame 25 in the rectangular hole 19.

[0025] On the outer side of the lower end of each bottom plate 30, a support plate 31 is fixedly installed. At the lower ends of the two support plates 31, a fixing plate 32 is fixedly installed. On the upper and lower side walls of the fixing plate 32, a number of mounting holes 34 are uniformly fixedly installed. Through the fixing plate 32 and the mounting holes 34, it is convenient to connect with other components of the rail transit equipment. At the connection of each support plate 31, the bottom plate 30 and the fixing plate 32, a number of reinforcing blocks 33 are fixedly installed. The reinforcing blocks 33 play a role in strengthening the support plate 31 and fixing it more firmly.

[0026] Embodiment 2 The present invention provides a technical solution: a preparation method for a multi-functional inner curved bow beam for rail transit equipment, comprising the following steps: 1. Mold design and manufacturing: According to the design dimensions and shape of the inner curved bow beam, using high-precision computer-aided design (CAD) and computer-aided manufacturing (CAM) technologies, design and manufacture a special forming mold. Coat a release agent on the mold surface to ensure that the cured inner curved beam can be smoothly demolded. Reserve the positions for metal embedded parts on the mold surface, and perform fine grinding and polishing on the mold surface to ensure the forming accuracy and surface quality of the inner curved bow beam; 2. Pre-preg cutting and laying: According to the stress analysis and design requirements of each part of the bow beam, accurately cut the carbon fiber pre-preg. Lay the pre-pregs layer by layer on the mold surface according to the optimized lay-up sequence and angle. During the laying process, use vacuum-assisted resin infusion (VARI) technology to ensure that the air between the pre-pregs is fully discharged and the pre-pregs are closely attached to the mold surface; 3. Embedding of reinforcing ribs: When embedding the internal grid-shaped reinforcing ribs, first set a positioning device on the mold according to the designed grid spacing, then lay the reinforcing ribs in sequence according to the positioning, and then cover the carbon fiber pre-preg. When embedding the reinforcing ribs arranged along the curvature direction on the outside, utilize the curved surface shape of the mold to attach the reinforcing ribs to the mold surface, and then lay the pre-preg to ensure that the curvature of the reinforcing ribs is consistent with that of the main body and avoid stress concentration points; 4. Curing and forming: Place the mold with the pre-pregs laid and the reinforcing ribs embedded into an autoclave, and perform curing and forming under the set temperature, pressure and time conditions. By precisely controlling the process parameters of the autoclave, the carbon fiber pre-pregs are fully cured to form an inner curved bow beam with high strength and high precision; 5. Heating stage: Slowly raise the temperature in the autoclave at a certain rate, generally controlling the heating rate at 2 °C per minute. During this process, the resin gradually softens and its fluidity increases, which is beneficial to the full infiltration and combination between the carbon fiber and the reinforcing ribs; 6. Insulation stage: When the temperature reaches the curing reaction temperature of the resin, maintain this temperature for 4 hours. In this stage, the resin undergoes a cross-linking reaction and gradually cures to form a stable three-dimensional network structure, firmly bonding the carbon fiber, reinforcing ribs, and metal parts together; 7. Cooling stage: After the insulation ends, lower the temperature in the autoclave to room temperature at an appropriate cooling rate. Generally, the cooling rate is controlled at 1 - 2 °C / minute. Slow cooling can avoid thermal stress caused by too rapid temperature change and prevent defects such as deformation and cracking of the bow beam; 8. Post-treatment and installation of functional modules: After curing is completed, take out the inner curved bow beam, remove the mold and perform surface finishing. Then, apply a protective coating with antistatic, wear-resistant, and weather-resistant properties on the surface of the bow beam. Finally, install the multifunctional module into the integrated functional module installation groove in the middle of the bow beam and conduct electrical connection and debugging.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-functional inner curved bow beam for rail transit equipment, comprising: The beam body (1), characterized in that: connection end blocks (2) are arranged at both the left and right ends of the beam body (1), the beam body (1) and the connection end blocks (2) are integrally formed and in an inwardly curved shape, the beam body (1) and the connection end blocks (2) are composed of multiple layers of carbon fiber prepreg, a number of second perforations (18) are opened in the vertical direction at the middle part of the beam body (1), rectangular holes (19) are opened in the left and right directions of both connection end blocks (2), a bolt hole (20) is opened at the front end of the connection end block (2), and the bolt hole (20) communicates with the rectangular hole (19); A module installation component (101) is arranged at the middle end of the beam body (1), fixing components (201) are arranged at the outer ends of both connection end blocks (2), the module installation component (101) includes a connection sleeve (3), the connection sleeve (3) is in a U shape, an extended edge (4) extending outwards is arranged on the outer side of the outer end of the connection sleeve (3), the connection sleeve (3) is sleeved on the outer wall of the beam body (1) and fixed by a connection mechanism, and a mounting plate (5) is installed at the outer end of the extended edge (4) through a first fixing bolt (17), and the mounting plate (5) is located outside the beam body (1).

2. The multifunctional inner curved bow beam for rail transit equipment according to claim 1, wherein: The mounting plate (5) is in a U shape, the mounting plate (5) is sleeved on the outer side of one end of the extended edge (4), a number of threaded sleeves (16) are fixedly installed on the outer walls of the mounting plate (5) and the extended edge (4), and one end of the first fixing bolt (17) passes through the side walls at the upper and lower ends of the mounting plate (5) and is threadedly connected with the inner wall of the threaded sleeve (16) on the extended edge (4).

3. The multifunctional inner curved bow beam for rail transit equipment according to claim 1, wherein: The connection mechanism includes a first perforation (6), a shielding plate (7), a plugging plate (10) and a moving plate (13). When the connection sleeve (3) is sleeved on the outer wall of the middle part of the beam body (1), the first perforation (6) communicates with the second perforation (18). There are two shielding plates (7) and both are in an L shape. The two shielding plates (7) are respectively fixedly installed on the inner walls on the left and right sides of the extended edge (4). A limiting hole (11) is opened at the upper end of each shielding plate (7), and a downwardly inclined guiding plate (8) is fixedly installed at the front end of each shielding plate (7).

4. The multi-functional inner curved bow beam for rail transit equipment according to claim 3, characterized in that: Plugging columns (14) are fixedly installed on the four sides at the lower end of the moving plate (13). The diameter of the plugging column (14) is smaller than the inner diameters of the first perforation (6) and the second perforation (18). A spring (15) is sleeved on the upper end of each plugging column (14), the upper end of the spring (15) is fixedly connected with the lower end of the moving plate (13), the lower end of the plugging column (14) slides through the first perforation (6) and the second perforation (18), positioning plates (40) are fixedly installed on the upper sides of the left and right ends of the plugging plate (10), positioning holes are opened on the side walls of the positioning plates (40), the size of the limiting hole (11) is larger than the size of the positioning plate (40), one end of the plugging plate (10) is inserted into the lower ends of the two shielding plates (7) through the guiding plate (8), and at the same time the lower end of the plugging plate (10) contacts the upper end of the moving plate (13). The moving plate (13) moves downward by squeezing the spring (15), and under the reaction force of the spring (15), the limiting hole (11) is sleeved on the outside of the positioning plate (40).

5. The multifunctional inner curved bow beam for rail transit equipment according to claim 4, characterized in that: A limit block (9) is fixedly mounted on the middle portion of the upper end of the plug board (10), and guide frames (39) are fixedly mounted on both left and right sides of the upper end of the plug board (10). A plug board (41) is slidably connected in the guide frame (39), one end of the plug board (41) is inserted into a positioning hole on the positioning plate (40), and a push plate (42) is fixedly mounted on the other end. The push plate (42) and the limit block (9) are connected via a return spring (43).

6. The multifunctional inner curved bow beam for rail transit equipment according to claim 1, characterized in that: The fixing component (201) comprises a docking frame (21), a docking frame (25) and a fixing bolt (29); the docking frame (21) and the docking frame (25) are both rectangular; the dimensions of the docking frame (21) and the docking frame (25) are smaller than the dimensions of the rectangular hole (19); a shielding frame (28) is fixedly mounted on the outer ends of the docking frame (21) and the docking frame (25); a rubber pad (27) is fixedly mounted on the inner wall of the shielding frame (28); a connecting frame (22) is fixedly mounted on the inner end of the docking frame (21); a threaded hole (23) is provided at the front and rear ends of the connecting frame (22); a threaded hole (24) is provided at the front and rear sides of the inner end of the docking frame (21); and a threaded hole (26) is provided at the front and rear sides of the inner end of the docking frame (25).

7. The multifunctional inner curved bow beam for rail transit equipment according to claim 6, characterized in that: The docking frame 1 (21) is inserted into the left end of the rectangular hole (19), the docking frame 2 (25) is inserted into the right side of the rectangular hole (19), and the connecting frame (22) is inserted into the inner side of the docking frame 2 (25). The threaded hole 3 (26) and the threaded hole 1 (23) are connected by pressing the rubber pad (27). One end of the fixing bolt 2 (29) passes through the bolt hole (20) and is threadedly connected to the inner wall of the threaded hole 2 (24) or the threaded hole 3 (26) and the threaded hole 1 (23).

8. A multi-functional inner bending bow beam for rail transit equipment according to claim 7, characterized in that: A bottom plate (30) is fixedly mounted on the lower end of each shielding frame (28), the two bottom plates (30) are cross-arranged, and circular holes (35) are provided at both left and right ends of the two bottom plates (30). An adjustment spring (37) is fixedly mounted on the lower end of the bottom plate (30) at the lower end, and an adjustment plate (36) is fixedly mounted on the lower end of the adjustment spring (37). Fixed columns (38) are fixedly mounted on four sides of the upper end of the adjustment plate (36), and a guide slope is provided on the upper end of the fixed column (38), and the upper end of the fixed column (38) passes through the two circular holes (35).

9. A multifunctional inner bent bow beam for rail transit equipment according to claim 8, characterized in that: A support plate (31) is fixedly mounted on the outer side of the lower end of each base plate (30), a fixing plate (32) is fixedly mounted on the lower ends of the two supporting plates (31), and a plurality of mounting holes (34) are evenly fixedly mounted on the upper and lower end side walls of the fixing plate (32).

10. A multi-functional inner curved bow beam for rail transit equipment according to claim 9, characterized in that: A plurality of reinforcing blocks (33) are fixedly mounted at the connection between each of the supporting plates (31), the bottom plate (30) and the fixing plate (32).

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