A production line for processing and welding of railway carriage side wall reinforcing seat

Abstract

The application discloses a production line for processing and welding of a reinforcing seat of a railway carriage side wall, adopts a roller shaft conveying system, and comprises a feeding conveying device, a cutting conveying device, a turnover conveying device and a group conveying device which are arranged in sequence and are connected and transmitted. The production line for processing and welding of the reinforcing seat of the railway carriage side wall adopts a multi-conveying device roller shaft conveying system with an elastic combined structure, each material conveying is labor-saving and convenient. The cutting conveying device adopts a fixed template to cut and correct, improves cutting processing efficiency and quality, and reduces labor intensity of the station. The turnover conveying device adopts a freely turnover mechanism, fixes each component after group shaping, and then welds, conveniently turns over and adapts to different welds, reduces welding operation difficulty, and improves welding quality. The application can be combined with stations according to the needs of welding combination of different components, realizes system cooperation, and improves overall production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of railway vehicle design and manufacturing technology, specifically relating to a production line for processing and welding side wall reinforcement seats for railway freight cars. Background Technology

[0002] In the production and manufacturing of railway vehicles, the existing freight car side wall reinforcement seats adopt a cold-pressed structure instead of a cast structure, which is characterized by its light weight and more stable quality.

[0003] The side wall reinforcement seat is made of plate cold-pressed into a U-shaped channel and welded with stainless steel round tube and partition plate; the weld is carbon steel and stainless steel weld; a conventional railway freight car usually has 12 reinforcement seats per car, each weighing 35 kg. If there are more than 20 cars in a single shift, 240 seats are needed, which is a huge workload.

[0004] The main workflow for processing and welding side wall reinforcement seats is as follows: The reinforcement seat is manually rotated 90° to the left and right to cut the excess material on the flange after forming; the reinforcement seat is then moved to the next workstation to assemble the carbon steel partition, and rotated 90° to the left and right to weld the vertical seam of the partition; it is then manually moved to the next workstation to assemble the stainless steel pipe and weld the flat weld position; it is then manually moved to the next workstation to rotate 90° and weld the stainless steel pipe to the inner and outer sides of the U-shaped channel flange; it is then manually moved to the next workstation to rotate 90° and weld the stainless steel pipe to the inner and outer sides of the other flange of the U-shaped channel; it is then manually moved to the next workstation to weld the stainless steel pipe to the bottom surface of the U-shaped channel; after welding, the reinforcement seat is loaded into a material box and hoisted to the next reinforcement seat assembly workstation; workers then move the reinforcement seat from the material box into the vehicle body for assembly.

[0005] The production process involves numerous manual handling operations that are physically demanding, as well as the use of overhead cranes to transport a large number of material boxes, resulting in high production efficiency and manufacturing costs. Summary of the Invention

[0006] This invention discloses a production line for the processing and welding of reinforcing seats for railway car side walls, based on existing technological needs. The purpose of this invention is to provide a welding system and equipment for assembling reinforcing seat components, as well as its operating method.

[0007] This invention is achieved through the following technical solution:

[0008] A production line for processing and welding reinforcing seats for railway car side walls, wherein the reinforcing seat is formed by cold pressing sheet metal into a U-shaped groove and then welding it with round tubes and partitions; wherein, two partitions are parallel to each other and welded and fixed in the U-shaped groove at intervals; four round tubes are welded and fixed between the two wings and the bottom surface of the U-shaped groove; the production line is characterized by adopting a roller conveyor system, including a feeding conveyor, a cutting conveyor, a flipping conveyor, and an assembly conveyor arranged in sequence;

[0009] The feeding and conveying device is used for the pre-feeding of various components of the reinforcing seat. It consists of a support bracket set on the ground and multiple sets of rollers installed on the bracket.

[0010] The cutting and conveying device is used to shape or cut off the excess material at the corners of the U-shaped groove after forming. It consists of two sets of sequentially connected left and right workstations. Each set of devices includes a support bracket set on the ground and multiple sets of rollers mounted on the bracket. The left workstation is equipped with a cutting template for straightening one side of the U-shaped groove, and the right workstation is equipped with a cutting template for straightening the other side of the U-shaped groove.

[0011] A flipping and conveying device is used for fixing and flipping the welding reinforcement seat assembly. It includes three sets of flipping and conveying devices arranged in sequence. Each set of devices includes a support bracket set on the ground and two sets of rollers installed at both ends of the support bracket. A flipping mechanism is set between the two sets of rollers to flip and fix the reinforcement seat assembly along the longitudinal direction of the conveying line.

[0012] The assembly and transfer device is used to transfer the welded reinforcement seats to the assembly station on the side wall of the carriage. It consists of a support bracket set on the ground and multiple sets of rollers mounted on the bracket.

[0013] Furthermore, both the left and right workstations have two fixed support plates between adjacent rollers; the left end of the fixed support plate of the left workstation is provided with a pillar and welded to the cutting template, and the right end of the fixed support plate of the right workstation is provided with a pillar and welded to the cutting template.

[0014] Furthermore, the flipping mechanism consists of rolling support plates, connecting beams, and rolling grooves; the rolling grooves are arc-shaped sliding grooves, and two sets of rolling grooves are fixedly and parallelly mounted on the support bracket; there are two rolling support plates, both of which are circular plates and can be slidably installed in the arc-shaped sliding grooves, and the two circular plates are provided with openings that match the cross-section of the reinforcing seat for fixing and limiting the reinforcing seat for flipping and welding; the two rolling support plates are connected by multiple connecting beams and rotate synchronously in sequence.

[0015] Furthermore, the bottom edge of the opening on the two circular plates that mates with the cross-section of the reinforcing seat has the same height as the roller conveying plane. Each set of flipping conveyor devices is surrounded on three sides to prevent welding spatter.

[0016] Furthermore, the assembly and transmission device is an inclined transmission structure used to bridge the height difference with the assembly station on the side wall of the carriage.

[0017] At least two sets of anti-slip barriers are provided between the rollers of the pairing transmission device to prevent the reinforcing seat from slipping backward. The anti-slip barrier is a one-way stop anti-slip mechanism, including a roller, a tilting arm, a hinge shaft, and a baffle. A hinge shaft is hinged between the middle parts of the roller support arms. Two parallel tilting arms are fixedly mounted on the hinge shaft, and the lower part of the tilting arm is heavier than the upper part, so that it can stand upright on its own. A baffle is fixedly connected between the ends of the two tilting arms. The relative position of the baffle and the upper part of the tilting arm is always located at the front end of the roller running direction.

[0018] The production line for welding and assembling side wall reinforcement seats of this invention features at least four parallel roller conveyor systems. Furthermore, the cutting or flipping conveyor devices within these four systems can be combined and arranged in parallel according to the efficiency requirements of the operating conditions.

[0019] The original reinforcement seat production line required manual handling of 35 kg reinforcement seats 2,560 times daily during the welding process. Simultaneously, it required 22 material boxes for packing the reinforcement seats, 40 round trips by hoisting, and 240 manual transfers from the material boxes to the car for assembly. This high frequency and intensity of manual handling, coupled with frequent use of the overhead crane, resulted in low production efficiency, impacting the overall production cycle and increasing manufacturing costs. The new production line for welding reinforcement seats on railway car side walls reduces this by thousands of handling operations daily, eliminates the need for material boxes and round trip hoisting, lowers labor intensity, improves production efficiency, and reduces manufacturing costs.

[0020] The advantages of this invention are as follows: The production line for welding reinforcement seats on railway car side walls utilizes a multi-transmission roller conveyor system with a flexible combination structure, making material conveying labor-saving and convenient. The cutting transmission device uses a standardized template for cutting reference and correction, improving cutting efficiency and quality while reducing labor intensity at the workstations. The flipping transmission device employs a freely flipping mechanism, fixing the assembled components before welding. It allows for convenient flipping to adapt to different weld seams, reducing welding operation difficulty and improving welding quality. This invention allows for workstation combinations according to the needs of different component welding assemblies, achieving system coordination and improving overall production efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall layout structure of the production line of the present invention;

[0022] Figure 2 This is a schematic diagram of the processing reinforcement seat structure of the production line of the present invention;

[0023] Figure 3 This is a schematic diagram of the side wall of the production line assembly and welding structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the production line conveying device of the present invention;

[0025] Figure 5 This is a schematic diagram of the production line cutting device of the present invention;

[0026] Figure 6 This is a schematic diagram of the production line turning device of the present invention;

[0027] Figure 7 This is a schematic diagram of the production line transmission device of the present invention;

[0028] Figure 8 This is a schematic diagram of the anti-slip barrier structure of the transmission device of the present invention.

[0029] In the diagram, A is the side wall component, B is the reinforcing seat, B1 is the panel, B2 is the wing edge, B3 is the round tube, and B4 is the partition.

[0030] 1 is the feeding conveyor, 2 is the cutting conveyor, 3 is the flipping conveyor, 4 is the pairing conveyor; 11 is support one, 12 is roller one, 21 is support two, 22 is roller two, 23 is fixed support plate, 24 is cutting template, 31 is support three, 32 is roller three, 33 is flipping mechanism, 331 is rolling support plate, 332 is rolling groove, 333 is connecting beam, 334 is opening, 41 is support four, 42 is roller four, 43 is anti-slip guard, 431 is support arm, 432 is roller cylinder, 433 is flipping arm, 434 is hinge shaft, 435 is baffle. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments. These specific embodiments are further explanations of the principles of the present invention and are not intended to limit the present invention in any way. Any technology that is the same as or similar to the present invention does not exceed the scope of protection of the present invention.

[0032] Refer to the attached diagram.

[0033] As shown in the figure, the reinforcing seat B is formed by cold pressing a plate into a U-shaped groove and then welding it with a round tube B3 and a partition plate B4. There are two partition plates B4, which are parallel to each other and welded and fixed in the U-shaped groove at intervals. There are four round tubes B3, which are welded and fixed between the two wings B2 of the U-shaped groove and the bottom panel B1.

[0034] The production line for processing and welding the side wall reinforcement seats of railway carriages adopts a roller conveyor system, which includes a feeding conveyor 1, a cutting conveyor 2, a flipping conveyor 3 and an assembly conveyor 4 arranged in sequence.

[0035] In this embodiment, the feeding and conveying device 1 is used for pre-feeding the components of the reinforcing seat. It consists of a support bracket 11 set on the ground and multiple sets of rollers 12 installed on the support bracket 11. The feeding and conveying device 1 is used to transfer the U-shaped groove, including the wing edge B2, from the material area to the cutting and conveying device 2.

[0036] In this embodiment, the cutting and conveying device 2 is used to shape or cut away the excess material at the corners of the U-shaped groove after forming. It consists of two sets of sequentially connected left and right workstations. Each set of devices includes a support bracket 21 set on the ground and multiple sets of rollers 22 mounted on the bracket. The left workstation is equipped with a cutting template 24 for shaping one side flange B2 of the U-shaped groove, and the right workstation is equipped with a cutting template 24 for shaping the other side flange B2 of the U-shaped groove. Figure 5 As shown, both the left and right workstations have two fixed support plates 23 between adjacent rollers 22. The left workstation's fixed support plate 23 has a support column at its left end, which is welded to the cutting template 24. The right workstation's fixed support plate 23 has a support column at its right end, which is also welded to the cutting template 24. After the U-shaped groove including the wing edge B2 is introduced into the cutting transmission device 2, the left wing edge B2 overlaps with the left cutting template 24, and a semi-automatic cutting machine is used for cutting. After completion, the right wing edge B2 is introduced to overlap with the right cutting template 24, and a semi-automatic cutting machine is used for cutting. Finally, the material is introduced into the flipping transmission device 3.

[0037] The flipping and conveying device 3 in this embodiment is used for fixing and flipping the welding reinforcement seat assembly. It includes three sets of flipping and conveying devices 3 arranged in sequence. Each set of devices includes a support bracket 31 set on the ground and two sets of rollers 32 installed at both ends of the support bracket. A flipping mechanism 33 is provided between the two sets of rollers 32, which can flip and fix the reinforcement seat assembly along the longitudinal direction of the conveying line.

[0038] like Figure 6 As shown, the flipping mechanism 4 consists of rolling support plates 331, connecting beams 333, and rolling grooves 332. The rolling grooves 332 are arc-shaped chutes, and two sets of rolling grooves 332 are fixedly mounted parallel to each other on the support bracket 31. The rolling support plates 331 are two circular plates, each slidably installed in the arc-shaped chutes. Openings 334 on the two circular plates, matching the cross-section of the reinforcing seat, are provided for fixing and limiting the reinforcing seat for flipping welding. The two rolling support plates 331 are connected by multiple connecting beams 333, rotating synchronously in sequence. The bottom edge of the openings 334 on the two circular plates, matching the cross-section of the reinforcing seat, has the same height as the roller conveyor plane. Barriers are installed on three sides of the outer perimeter of each set of flipping conveyor devices to prevent welding spatter.

[0039] The U-shaped groove, including the wing edge B2, after shaping or cutting, is introduced into the flipping mechanism 4. Two partition plates B4 are assembled. The flipping mechanism is rotated 33 to 90 degrees to weld the seam between the wing edge B2 and the partition plate B4. The flipping mechanism is then rotated 33 to 180 degrees to weld the seam between the other wing edge B2 and the partition plate B4. The U-shaped groove, including the wing edge B2, is introduced into another flipping mechanism 4 to assemble two round tubes B3. The flipping mechanism is rotated 33 to 90 degrees to weld the seam between the left round tube B3 and the wing edge B2. The flipping mechanism is then rotated 33 to 90 degrees to weld the seam between the bottom panel B1 and the round tube B3. The U-shaped groove, including the wing edge B2, is introduced into the next flipping mechanism 4 to assemble two round tubes B3. The flipping mechanism is rotated 33 to 90 degrees to weld the seam between the right round tube B3 and the wing edge B2. The flipping mechanism is then rotated 33 to 90 degrees to weld the seam between the bottom panel B1 and the round tube B3.

[0040] In this embodiment, the assembly and transmission device 4 is used to transport the welded reinforcement seat B to the assembly station of the carriage side wall A. It consists of a support bracket 41 set on the ground and multiple sets of rollers 42 installed on the support bracket.

[0041] like Figure 7 , Figure 8 As shown, the assembly and transfer device 4 is an inclined transfer structure used to bridge the height difference with the assembly station on the side wall of the carriage. At least two sets of anti-slip barriers 43 are spaced apart between the rollers 42 of the assembly and transfer device 4 to prevent the reinforcing seat from slipping. The anti-slip barrier 43 is a one-way stopping and anti-slip mechanism, including the rollers 42, tilting arms 433, hinge shafts 434, and baffles 435. The hinge shafts 434 are hinged between the middle of the support arms 431 of the rollers 42. Two parallel tilting arms 433 are fixedly mounted on the hinge shafts 434, with the lower weight greater than the upper weight, allowing them to stand upright independently. A baffle 435 is fixedly connected between the ends of the two tilting arms 433. The relative position of the baffle 435 and the upper part of the tilting arms 433 is always at the front end of the rollers 42 in the running direction. After the welded reinforcing seat B is introduced into the transfer device 4, the height difference may cause it to slide down. The anti-slip barriers are used to achieve one-way passage and prevent slippage.

[0042] like Figure 1 As shown, the production line in this embodiment is equipped with at least four parallel roller conveyor systems. The cutting or flipping conveyor devices in these four parallel roller conveyor systems can be combined and arranged side-by-side. The figure shows a four-roller conveyor system, with the cutting conveyor devices arranged in a two-for-one configuration.

Claims

1. A production line for processing and welding reinforcing seats for railway car side walls, wherein the reinforcing seats are constructed by cold-pressing sheet metal into U-shaped grooves and then welding them with round tubes and partitions; wherein, Two partitions are welded and fixed in a U-shaped groove, parallel to each other and spaced apart; four round tubes are welded and fixed between the two wings and the bottom surface of the U-shaped groove; the production line is characterized by adopting a roller conveyor system, including a feeding conveyor, a cutting conveyor, a flipping conveyor and a pairing conveyor arranged in sequence. The feeding and conveying device is used for the pre-feeding of various components of the reinforcing seat. It consists of a support bracket set on the ground and multiple sets of rollers installed on the bracket. The cutting and conveying device is used to shape or cut off the excess material at the corners of the U-shaped groove after forming. It consists of two sets of sequentially connected left and right workstations. Each set of devices includes a support bracket set on the ground and multiple sets of rollers mounted on the bracket. The left workstation is equipped with a cutting template for straightening one side of the U-shaped groove, and the right workstation is equipped with a cutting template for straightening the other side of the U-shaped groove. A flipping and conveying device is used for fixing and flipping the welding reinforcement seat assembly. It includes three sets of flipping and conveying devices arranged in sequence. Each set of devices includes a support bracket set on the ground and two sets of rollers installed at both ends of the support bracket. A flipping mechanism is set between the two sets of rollers to flip and fix the reinforcement seat assembly along the longitudinal direction of the conveying line. The assembly and transfer device is used to transfer the welded reinforcement seats to the assembly station on the side wall of the carriage. It consists of a support bracket set on the ground and multiple sets of rollers mounted on the bracket.

2. The production line for processing and welding reinforcement seats for railway car side walls according to claim 1, characterized in that: Both the left and right workstations have two fixed support plates between adjacent rollers. The left workstation's fixed support plate has a support column at its left end and is welded to the cutting template. The right workstation's fixed support plate has a support column at its right end and is welded to the cutting template.

3. The production line for processing and welding reinforcement seats for railway car side walls according to claim 1, characterized in that: The flipping mechanism consists of rolling support plates, connecting beams, and rolling grooves; the rolling grooves are arc-shaped sliding grooves, and two sets of rolling grooves are fixedly installed in parallel on the support bracket; there are two rolling support plates, both of which are circular plates and can be slidably installed in the arc-shaped sliding grooves. The two circular plates are provided with openings that match the cross-section of the reinforcing seat for fixing and limiting the reinforcing seat for flipping and welding; the two rolling support plates are connected by multiple connecting beams to flip and rotate synchronously.

4. The production line for processing and welding reinforcement seats for railway car side walls according to claim 3, characterized in that: The bottom edge of the opening on the two circular plates that mates with the cross-section of the reinforcing seat has the same height as the roller conveying plane.

5. The production line for processing and welding reinforcement seats for railway car side walls according to claim 3, characterized in that: Each set of flipping and conveying devices is surrounded on three sides to prevent welding spatter.

6. The production line for processing and welding reinforcement seats for railway car side walls according to claim 1, characterized in that: The pairing and transmission device is an inclined transmission structure used to bridge the height difference with the pairing station on the side wall of the carriage.

7. The production line for processing and welding reinforcement seats for railway car side walls according to claim 6, characterized in that: At least two sets of anti-slip barriers are provided between the rollers of the pairing transmission device to prevent the reinforcing seat from slipping backward. The anti-slip barrier is a one-way stop anti-slip mechanism, including a roller, a tilting arm, a hinge shaft, and a baffle. A hinge shaft is hinged between the middle parts of the roller support arms. Two parallel tilting arms are fixedly mounted on the hinge shaft, and the lower part of the tilting arm is heavier than the upper part, so that it can stand upright on its own. A baffle is fixedly connected between the ends of the two tilting arms. The relative position of the baffle and the upper part of the tilting arm is always located at the front end of the roller running direction.

8. The production line for processing and welding reinforcement seats for railway car side walls according to any one of claims 1 to 7, characterized in that: The production line is equipped with at least four parallel roller conveyor systems.

9. The production line for processing and welding reinforcement seats for railway car side walls according to claim 8, characterized in that: In a four-roller conveyor system arranged in parallel, the cutting or flipping conveyor can be combined and placed side by side.

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