Special assembling device for end wall frame of railway freight hopper car

Abstract

The invention discloses an assembling device special for an end wall frame of a railway freight hopper car. The assembling device comprises a plane supporting rack, a slope supporting platen, a side wall connecting plate assembling module, a transverse belt assembling module and a slope assembling module. According to the assembling device, the convex profiling curved surface module and the concave profiling curved surface module are adopted to achieve accurate assembling of the tight seam connecting plates, it is ensured that the curvature radiuses of the connecting plates and the transverse belt after assembling are consistent with the requirement of a design drawing, and the precision and stability of products are improved; a round steel sliding guide rail is adopted as a sliding guide rail of the module, an installation foundation of the convex module and the concave module and a fixing reference of each connecting plate, sliding resistance is reduced, and installation is faster, more convenient and more accurate; the assembly device adopts flexible design, modular installation and rapid switching and production changing, and modules adopt assembly welding structures, so that the weight is lighter, and the cost is low; the round steel guide rail design is adopted, module sliding resistance is small, and operation is flexible; the module working surface adopts a profiling curved surface design, so that seam sealing precision and efficiency are high; the device is safe, reliable and good in universality.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing equipment design, relates to the technical field of metal welding shaping equipment design, and specifically is a flexible special assembly device for the end wall frame of a railway freight hopper car. Background Art

[0002] Among railway freight cars, grain transport hopper cars are special railway transport vehicles. The main frame structure of the existing grain transport hopper cars is made of stainless steel, and the side wall panels, end wall panels and roof panels are all made of aluminum alloy. The three are connected into a whole by precision riveting with the help of the end wall frame structure. This structure makes its production process complicated and the production cycle long. In addition, grain transport hopper cars must be able to adapt to two different track standards, standard gauge and narrow gauge, and meet various tonnage requirements. The end wall frames of different models of vehicles have significant differences in shape and size. This requires the end wall frame production line to be adjusted and switched frequently to ensure that vehicles of different models can be produced.

[0003] The end wall frame is a key structural component of the grain hopper car body, used for the tight connection of the side wall panel, the end wall panel and the roof panel. Its structure mainly includes elements such as the side wall connecting plate, the roof connecting plate, the end wall connecting plate, the V-shaped horizontal belt and the end column, which presents an irregular V-shaped space structure as a whole. The side wall connecting plate, the roof connecting plate and the end wall connecting plate are connected by arc-shaped surfaces. The assembly accuracy is crucial to the quality of the end wall frame. If the matching between these three connecting plates is not accurate enough, gaps may appear after riveting the side wall panel, the roof panel and the end wall panel, resulting in water leakage problems, and may cause quality accidents, requiring rework and repair. Therefore, the assembly quality of the end wall frame is directly related to the performance and reliability of the entire vehicle.

[0004] In the production of the end wall frame, the design of the side wall connection plate introduces complex spatial curved surface elements, and the finished product is produced using a large-scale pressing mold, which has high manufacturing costs. Therefore, the production process of the side wall connection plate is optimized as follows: the laser cutting machine is used to cut the material into the unfolded size drawing, and its arc surface is realized by using the profiling module to form the seam when assembling the end wall frame. Since its material is T4003 stainless steel, it has high strength, which not only greatly increases the difficulty of the seam forming operation, but also puts forward quite high requirements on the manufacturing accuracy.

[0005] For the processing of end wall frames, the existing tooling has poor versatility. When switching production, the production tooling needs to be frequently cut and modified or newly designed and manufactured to adapt to the production of new products. The existing process wastes manpower and material resources, has low efficiency and high cost. It is necessary to design a flexible device that can adapt to fast assembly and contouring of curved surfaces, which can quickly switch modules to adapt to the assembly of different curved surfaces, realize seamless production conversion, improve production efficiency, and save tooling investment costs. Summary of the invention

[0006] The invention discloses a special assembly device for the end wall frame of a railway freight hopper car. The invention aims to provide a special assembly device for the end wall frame of a railway freight hopper car which can be adapted to metal components with different curved surfaces for seamless assembly and realize seamless production conversion.

[0007] The present invention is achieved through the following technical solutions:

[0008] A special assembly device for the end wall frame of a railway freight hopper car, characterized by comprising: a plane support stand, an inclined support stand, a side wall connecting plate assembly module, a transverse belt assembly module, and an inclined surface assembly module;

[0009] The plane support frame is used to support the plane part of the end wall frame, and the inclined support platform is used to support the inclined part of the end wall frame; one end of the plane support frame is connected to the inclined support platform to form an L-shaped structure;

[0010] Two sets of side wall connection plate assembly modules are respectively arranged on both sides of the plane support frame; each set is composed of a detachable concave module and a convex module, and the concave module and the convex module are respectively driven to open and close by a cylinder assembly arranged on the plane support frame to realize the assembly and tight seam of the side wall connection plate, the end wall connection plate and the horizontal belt; the concave module and the convex module have a curved surface that matches and imitates the curved side wall connection plate of the end wall frame;

[0011] Multiple sets of transverse belt assembly modules are arranged at intervals on the plane support frame; each set of transverse belt assembly modules is composed of a fixed ear plate fixed to the plane support frame, a movable bent arm and a telescopic screw rod, and is used to fix the transverse belt of the end wall frame and the side wall connecting plate to align the seam;

[0012] Multiple sets of slope assembly modules are respectively arranged on the outer periphery of the slope support platform; each set of slope assembly modules is composed of a support arm and a telescopic screw rod fixed to the slope support platform, and is used to fix the slope side wall connecting plates on both sides and the arc-structured roof connecting plates at the ends.

[0013] Furthermore, the planar support platform is connected and fixed by a platform crossbeam and a platform longitudinal beam to form a steel truss frame, and longitudinal platform side beams are arranged on both sides. The steel truss frame is fixed to the ground through support legs.

[0014] The cylinder assembly further includes a cylinder, a connecting head and a cylinder seat plate; the cylinder includes a die cylinder and a punch cylinder and is respectively arranged on both sides of the side beam of the platform; the die cylinder is fixed on the cylinder seat plate with a horizontal mounting structure; the punch cylinder is installed on the inner side of the side beam with a flange; the die cylinder and the punch cylinder are both driven and connected to the concave module and the convex module through a connecting head.

[0015] Furthermore, the cylinder seat plate is a mounting base for the die cylinder and is provided with front and rear rows of mounting holes suitable for two groups of specifications, standard rail and narrow rail.

[0016] Furthermore, the rear end of the concave module is provided with a plurality of concave die mounting holes, and the piston rod of each concave die cylinder is synchronously driven and connected with the concave module through the concave die mounting hole; the rear end of the convex module is provided with a plurality of convex die mounting holes, and the piston rod of each convex die cylinder is synchronously driven and connected with the convex module through the convex die mounting hole.

[0017] Furthermore, the longitudinal beams of the two side frames are used to support, install and fix the punch cylinder, and the cross beams are used to support, install and fix the modules of the cross belt assembly.

[0018] Furthermore, a plurality of round steel guide rails are arranged on the outside of the side beams of the platform, which are perpendicular to the side beams of the platform and are connected and fixed to the side beams of the platform, and the other end of the round steel guide rails is connected and fixed to one end of the cylinder seat plate; the highest vertices of each round steel guide rail are located in the same plane, which are used for positioning and supporting the convex module and the concave module, and are also the lower vertical reference of the side wall connecting plate.

[0019] Furthermore, a V-shaped pressure block is connected to the end of the telescopic screw rod of the cross-belt assembly module, and the V-shape of the pressure block matches and fits with the V-shape of the cross-belt; the movable bending arm is provided with an upper and lower double-hole structure, and the fixing and movable functions are realized by two round pins and a fixed ear plate; the lower round pin is provided as a fixed structure to provide a rotation fulcrum for the bending arm; the upper round pin is provided as a detachable movable structure, and the end V-shaped pressure block is a detachable structure.

[0020] Furthermore, one end of the connector is a threaded sleeve structure for connecting to the piston head of the driving cylinder; the other end of the connector is provided with a radial mounting hole for connecting to the male die mounting hole or the female die mounting seat plate through a connecting pin.

[0021] The present invention is beneficial to the device:

[0022] The assembly device of the present invention adopts convex and concave contoured curved surface modules to realize accurate assembly of tight seam connecting plates. The assembly device ensures that the curvature radius between each connecting plate and after assembly with the transverse belt is consistent with the requirements of the design drawings, thereby improving the accuracy and stability of the product.

[0023] The present invention adopts modular technology, and designs the convex and concave contoured surface modules into replaceable modules by applying modular design, and connects them with cylinders; it not only realizes the rapid clamping and pairing of workpieces, but also enables seamless production line conversion, greatly improving the flexibility and efficiency of the production line.

[0024] The present invention adopts structural simulation technology, designs and assembles the frame structure of the convex and concave profiled curved surface modules by applying structural simulation, performs precise profile processing on the welded structural parts, and uses simulation software to check the strength of the modules. This method not only greatly reduces the weight, profile processing amount and material cost of the modules, but also ensures that the structural strength of the modules meets the strict seam requirements.

[0025] The present invention adopts round steel sliding guide rails. The device uses the highest point curved surface of the round steel top as the sliding guide rail of the module and as the installation basis of the convex and concave modules and the fixed reference of each connecting plate, which improves the smoothness of the curved surface of the guide rail, thereby reducing the sliding friction resistance, and the installation is faster, more convenient and accurate. This design makes the device smoother during operation, further improving production efficiency and product quality.

[0026] The flexible assembly device of the end wall frame of the railway freight hopper car of the present invention adopts a flexible design and modular installation, and can quickly switch to another production line; the device module adopts an assembly welding structure, which is lightweight and has a low manufacturing cost; the round steel guide rail design is adopted, the module has a small sliding resistance and is flexible to operate; the module working surface is designed with a contoured curved surface, with high seam accuracy and high efficiency; the device of the present invention is safe, reliable and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the assembly device of the present invention;

[0028] Figure 2 It is a schematic diagram of an end wall frame assembled by the assembly device of the present invention;

[0029] Figure 3 This is a schematic diagram of the assembly of the end wall frame of a standard rail vehicle of the assembly device of the present invention;

[0030] Figure 4 It is a schematic diagram of the assembly device of the present invention for assembling the concave and convex mold modules of the tight seam;

[0031] Figure 5 It is a schematic diagram of the assembly of the end wall frame of a narrow-gauge vehicle of the assembly device of the present invention;

[0032] Figure 6 It is a schematic diagram of the cylinder module of the assembly device of the present invention;

[0033] Figure 7 It is a schematic diagram of a V-shaped horizontal belt pressing module of the assembly device of the present invention;

[0034] Figure 8 It is a schematic diagram of the curved surface of the side wall connecting plate of the assembly device of the present invention.

[0035] In the figure, 1 is a concave module, 2 is a convex module, 3 is a concave die cylinder, 4 is a convex die cylinder, 5 is a beveled seam module, 6 is a V-shaped horizontal belt pressing module, 7 is a beveled support plate, 8 is a plane support stand, 9 is a concave die mounting hole, 10 is a convex die mounting hole, 11 is a round steel guide rail, 12 is a cylinder leg; 21 is a side wall connecting plate, 22 is a beveled connecting plate, 23 is a V-shaped horizontal belt, 24 is a transition horizontal belt, 25 is an end The first embodiment is the bearing pad, 26 is the roof connecting plate, 28 is the end wall connecting plate, 29 is the end column, 30 is the die connecting seat, 31 is the die module cylinder mounting seat plate, 32 is the standard rail mounting hole, 33 is the narrow rail mounting hole, 34 is the stand side beam, 35 is the punch cylinder connecting head, 36 is the bent arm, 37 is the fixed ear plate, 38 is the round pin, 39 is the telescopic screw, 40 is the V-shaped pressure block, and 41 is the side wall connecting plate vertical positioning plate. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0037] As shown in the figure, the special assembly device for the end wall frame of the railway freight hopper car of the present invention includes: a flat support frame, an inclined support platform, a side wall connecting plate assembly module, a cross belt assembly module, and an inclined assembly module.

[0038] The plane support platform is used to support the plane part of the end wall frame. The platform crossbeam and the platform longitudinal beam are connected and fixed to form a steel truss frame, and the steel truss frame is fixed to the ground through the bracket leg support. The platform side beams are set on both sides to support and fix the punch cylinder, and the crossbeams are used to support and assemble the tight seams of the V-shaped cross belt. The inclined support platform is used to support the inclined frame part of the end wall frame; one end of the plane support platform is connected to the inclined support platform to form an L-shaped structure. The precise control of the angle of the L-shaped structure is crucial to ensure the precise riveting assembly of the end wall panel.

[0039] The side wall connection plate assembly modules are designed in two sets, which are symmetrically installed on both sides of the plane support frame. Each set of modules consists of a detachable concave module and a convex module, which are driven by the cylinder on the plane support frame to achieve accurate assembly of the side wall connection plate, the end wall connection plate and the V-shaped cross band. The working surface design of the concave module and the convex module imitates the curved surface shape of the side wall connection plate of the end wall frame, ensuring a perfect fit. This design not only improves the efficiency of assembly, but also ensures the stability of the assembly quality.

[0040] The cylinder module includes a punch cylinder and a die cylinder. The cylinder modules are distributed at intervals on the inner and outer sides of the side beam of the platform to provide precise power support for the assembly of the tight seam device.

[0041] Each cylinder assembly includes the cylinder itself, a connector and a cylinder base plate. The cylinder includes a die cylinder and a punch cylinder; the die cylinder is fixed to the cylinder base plate in a horizontal installation mode; the punch cylinder is installed on the inner side of the side beam in the form of a flange, ensuring structural stability and convenient operation. Both the die cylinder and the punch cylinder realize a reliable connection between the cylinder and the convex and concave modules through the connector, ensuring that the cylinder can drive the convex and concave modules to operate synchronously when it moves, realizing linkage and merging of tight seams.

[0042] The cylinder base plate not only serves as the mounting base for the die cylinder, but is also provided with two sets of mounting holes of different specifications, standard rail and narrow rail, to meet diverse installation requirements and improve the overall flexibility of the module.

[0043] The V-shaped cross-belt clamping modules are designed to be divided into multiple sets, which are arranged at intervals on a flat support stand. Each set of modules consists of three main parts: a fixed ear plate, a movable bending arm, and a telescopic screw. These modules are specially used to achieve the precise assembly and tight compression of the V-shaped cross-belts of the end wall frame. A V-shaped pressure block is provided at the end of the telescopic screw, which fits tightly with the V-shaped cross-belt and protects the V-shaped cross-belt from being crushed by increasing the force-bearing area, while preventing the V-shaped cross-belt from increasing its angle or collapsing due to pressure. The movable bending arm adopts an upper and lower double-hole structure, and realizes the fixing and movable functions through two round pins. The lower round pin is fixed and stationary, providing a rotation fulcrum for the bending arm; the upper round pin is designed as a detachable movable part, which allows for quick clamping and loosening of the workpiece, greatly saving the screwing time and improving work efficiency;

[0044] The inclined plane joint modules are designed in multiple sets, which are arranged on the outer periphery of the inclined plane support plate. Each set of inclined plane assembly modules is mainly composed of two core components: the support arm fixed to the inclined plane support plate and the telescopic screw. The support arm is responsible for stably fastening to the inclined plane support plate, and the telescopic screw is used to adjust and fix the inclined side wall connection plates on both sides and the roof connection plates at the end. This design allows flexible position adjustment during the assembly process, which is convenient for quick switching and adjustment during production conversion to adapt to the assembly of end wall frames of different sizes.

[0045] The round steel curved guide rail is used to support the male and female modules, and is also the vertical reference for the side wall connecting plates. It is welded and fixed above the cylinder legs. By reducing the contact area and friction resistance, it provides a strong guarantee for the flexibility of the male and female modules, and also helps to improve the efficiency and performance of the entire mechanical system.

[0046] The rear end of the concave module is equipped with multiple die mounting holes, which are designed for quick replacement of dies to meet different production needs. The piston rod of each die cylinder is connected to the die mounting hole through a connector. The connector adopts a dual-function design. Its round part has a threaded structure that can be firmly connected to the piston rod; the square part is provided with a mounting hole for connecting to the mounting hole of the concave module to ensure the stable fixation of the die. When production needs to be switched, the concave module can be quickly disassembled and replaced to achieve seamless production switching. By simplifying the production switching process, the design of the concave module significantly improves the production switching efficiency and reduces the production interruption time, thereby improving the flexibility and response speed of the production line, providing strong support for the efficient operation of the factory.

[0047] The modular and fast production conversion design of the present invention is particularly important for the multi-variety, small-batch production mode in the modern manufacturing industry, and can quickly adapt to market changes and customer needs.

[0048] Example 1

[0049] like Figures 1 to 5 As shown, this embodiment provides a special assembly device for the end wall frame of a railway freight hopper car, including a concave module 1, a convex module 2, a concave mold cylinder 3, a punch mold cylinder 4, a bevel seam module 5, a V-shaped cross belt clamping module 6, a bevel support platform 7, and a flat support platform 8.

[0050] like Figure 3 As shown, taking the assembly of the end wall frame of the rail car as an example, the female mold cylinder 3 is installed on the rail mounting hole 32. The female module 1 and the male module 2 are placed flat on the round steel guide rail 11, and then the flat end of the female mold connecting seat 30 is connected to the female mold mounting hole 9 of the female module 1. The male mold cylinder connector 35 is connected to the male mold mounting hole 10 of the male module 2, and then the inclined surface tight seam module 5 is adjusted and installed to the outer periphery of the inclined surface support plate 7, as shown in FIG. Figure 1Layout. Open the curved arm 36 of the V-shaped horizontal belt clamping module 6, and then lay the skeleton components of the end wall frame such as the V-shaped horizontal belt 23, the transition horizontal belt 24, the end bearing pad 25, the end wall connecting plate 28, the end column 29, the roof connecting plate 26, etc. on the platform to the corresponding positions for positioning and assembly, and then stand the side wall connecting plate 21 between the male module 2 and the female module 1, with the horizontal facade supported by the round steel guide rail 11, and the inclined facade fitting the side wall connecting plate facade positioning plate 41, and then open the air cylinder to push the male and female modules to clamp the side wall connecting plate 21 inside and outside. Under the action of the air cylinder group, the working surfaces of the male and female modules are tightly fitted to the side wall connecting plate 21 blank, so that it is deformed into an arc surface. At the same time, the side wall connecting plate 21 is tightly fitted with the end wall connecting plate 28. Finally, tighten the tight seam screw 39 of the inclined surface tight seam module 5 and the V-shaped horizontal belt pressing module 6, so that the inclined surface of the side wall connecting plate 21 is also tightly attached to the end wall connecting plate 28, and the roof connecting plate 26 is tightly attached to the full end wall connecting plate 28 and the end column 29, and other components are installed. After the above operations, finally use a welding gun to evenly spot weld them. After the end wall frame is assembled and formed, the air cylinder is depressurized, the male and female molds are opened, the tight seam screw 39 is loosened, and the end wall frame is taken out and sent to the next process for overall assembly and welding.

[0051] Example 2

[0052] Take the assembly of the narrow-gauge vehicle end wall frame as an example, install the die cylinder 3 on the standard rail mounting hole 33. Replace the concave module 1 and the convex module 2 and place them flat on the round steel guide rail 11, and then connect the flat end of the die connection seat 30 to the die mounting hole 9 of the concave module 1. Connect the convex cylinder connector 35 to the convex mounting hole 10 of the convex module 2, and then adjust and install the bevel joint module 5 to the outer periphery of the bevel support plate 7, as shown in the figure. Figure 5 Layout, the remaining operations are the same as in Example 1.

Claims

1. A special assembly device for the end wall frame of a railway freight hopper car, characterized in that include: Plane support frame, inclined support platform, side wall connecting plate assembly module, horizontal belt assembly module, inclined surface assembly module; The plane support frame is used to support the plane part of the end wall frame, and the inclined support platform is used to support the inclined part of the end wall frame; one end of the plane support frame is connected to the inclined support platform to form an L-shaped structure; Two sets of side wall connection plate assembly modules are respectively arranged on both sides of the plane support frame; each set is composed of a detachable concave module and a convex module, and the concave module and the convex module are respectively driven to open and close by a cylinder assembly arranged on the plane support frame to realize the assembly and tight seam of the side wall connection plate, the end wall connection plate and the horizontal belt; the concave module and the convex module have a curved surface that matches and imitates the curved side wall connection plate of the end wall frame; Multiple sets of transverse belt assembly modules are arranged at intervals on the plane support frame; each set of transverse belt assembly modules is composed of a fixed ear plate fixed to the plane support frame, a movable bent arm and a telescopic screw rod, and is used to fix the transverse belt of the end wall frame and the side wall connecting plate to align the seam; Multiple sets of slope assembly modules are respectively arranged on the outer periphery of the slope support platform; each set of slope assembly modules is composed of a support arm and a telescopic screw rod fixed to the slope support platform, and is used to fix the slope side wall connecting plates on both sides and the arc-structured roof connecting plates at the ends.

2. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 1 is characterized in that: The planar support platform is formed by connecting and fixing a platform cross beam and a platform longitudinal beam to form a steel truss frame, with longitudinal platform side beams arranged on both sides, and the steel truss frame is fixed to the ground through supporting legs.

3. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 2 is characterized in that: The cylinder assembly includes a cylinder, a connecting head and a cylinder seat plate; the cylinder includes a die cylinder and a punch cylinder and is respectively arranged on both sides of the side beam of the platform; the die cylinder is fixed on the cylinder seat plate with a horizontal mounting structure; the punch cylinder is mounted on the inner side of the side beam with a flange; the die cylinder and the punch cylinder are both driven and connected to the concave module and the convex module through a connecting head.

4. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 3 is characterized in that: The cylinder seat plate is a mounting base for the die cylinder and is provided with front and rear rows of mounting holes suitable for two groups of specifications, standard rail and narrow rail.

5. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 3 is characterized in that: The rear end of the concave module is provided with multiple concave die mounting holes, and the piston rod of each concave die cylinder is synchronously driven and connected with the concave module through the concave die mounting holes; the rear end of the convex module is provided with multiple punch mounting holes, and the piston rod of each punch cylinder is synchronously driven and connected with the convex module through the punch mounting holes.

6. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 3 is characterized in that: The longitudinal beams of the two side frames are used for supporting, installing and fixing the punch cylinder, and the cross beams are used for supporting, installing and fixing the modules of the cross belt assembly.

7. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 3 is characterized in that: A plurality of round steel guide rails are arranged on the outside of the side beams of the platform, which are perpendicular to the side beams of the platform and are connected and fixed to the side beams of the platform. The other end of the round steel guide rail is connected and fixed to one end of the cylinder seat plate. The highest vertices of each round steel guide rail are located in the same plane, which are used for positioning and supporting the convex module and the concave module, and are also the lower vertical reference of the side wall connecting plate.

8. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 3 is characterized in that: A V-shaped pressure block is connected to the end of the telescopic screw rod of the transverse belt assembly module, and the V-shape of the pressure block matches and fits with the V-shape of the transverse belt; the movable bending arm is provided with an upper and lower double-hole structure, and the fixing and movable functions are realized by two round pins and a fixed ear plate; the lower round pin is provided as a fixed structure to provide a rotation fulcrum for the bending arm; the upper round pin is provided as a detachable movable structure, and the end V-shaped pressure block is a detachable structure.

9. The dedicated assembly device for the end wall frame of a railway freight hopper car according to claim 3 is characterized in that: One end of the connector is a threaded sleeve structure for connecting to the piston head of the driving cylinder; the other end of the connector is provided with a radial mounting hole for connecting to the male die mounting hole or the female die mounting seat plate through a connecting pin.

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