Railway wagon body remanufacturing plasma cutting device and cutting process

Abstract

The invention discloses a railway wagon body remanufacturing plasma cutting device and technology, and belongs to the field of plasma cutting technologies. The railway wagon body remanufacturing plasma cutting device comprises a working trolley, a welding system and a mechanical arm; the method comprises the steps that S1, scribing is conducted in a carriage, and horizontal kerfs of the uniform height are drawn; s2, end wall transverse lines and side wall transverse lines in the compartment are cut off; s3, the working vehicle is hoisted to the outer side of the carriage, and a worker uses a collaborative robot to conduct plasma cutting operation on vertical welding seams of the stand columns and transverse welding seams of end wall reinforcing ribs; s4, marking and measuring the plate, and precisely shearing the plate by using a plate shearing machine according to the measured cutting size; and S5, the plates are strictly placed according to the marked positions, and a 1MM gap is reserved between the new plates and the old plates. According to the plasma cutting device and process for remanufacturing of the railway wagon body, through pre-measurement and marking, the cutting precision can be greatly improved, the process of assembling and secondary cutting is omitted, the bottleneck procedure passing capacity is improved, the plate matching quality is greatly improved, and a foundation is laid for follow-up automatic welding.

Description

Technical Field

[0001] The present invention relates to the field of plasma cutting processes, and particularly to a plasma cutting device and cutting process for the remanufacture of railway freight car bodies. Background Art

[0002] Railway freight cars mainly transport goods and can be divided into general freight cars and special freight cars according to their uses. General freight cars refer to vehicles suitable for transporting various goods, such as gondolas, boxcars, flatcars, etc. Special freight cars refer to vehicles for transporting a certain type of goods, such as coal cars, container cars, bulk cement cars, etc. After long-term use, some parts of the railway freight car compartments will be corroded, and continuing to use them will pose a greater safety hazard. Generally, cutting treatment will be carried out for subsequent utilization.

[0003] Currently, most of the cutting of freight cars uses oxygen and industrial gas cutting, with low cutting accuracy, resulting in secondary gas cutting in subsequent processes, greatly affecting the quality of plate matching. During the oxygen and industrial gas cutting process, due to uneven flame temperature distribution and the action of the oxygen flow, the width of the cut is usually relatively wide, and it is easy to have situations such as uneven cut surfaces and poor perpendicularity, resulting in low cutting accuracy. The cutting plane is likely to cause secondary gas cutting in subsequent processes, greatly affecting the quality of plate matching. Summary of the Invention

[0004] To solve the problem that the cutting plane is likely to cause secondary gas cutting in subsequent processes and greatly affect the quality of plate matching, the present invention provides a plasma cutting device and cutting process for the remanufacture of railway freight car bodies, and the technical solutions are as follows:

[0005] A plasma cutting device for the remanufacture of railway freight car bodies includes a work vehicle, a welding system, and a robotic arm. A top seat is provided on the top of the work vehicle;

[0006] The welding system is arranged on the top of the work vehicle. The robotic arm is located on the top of the top seat. A plasma cutting machine is provided at the end of the robotic arm. An electric cylinder connected to the robotic arm is provided on the top of the work vehicle. Guide wheels are provided around the bottom of the work vehicle.

[0007] Preferably, the welding system includes a transformer, a welding machine, and a water cooler. The transformer is arranged on the left side of the welding machine and the water cooler. The welding machine is arranged on the top of the water cooler.

[0008] Preferably, fixing devices are provided around the outer surface of the work vehicle. The fixing device consists of a fixing plate, a screw, a foot pad, and a rotating rod.

[0009] Preferably, the number of the fixing plates is four and they are symmetrically distributed on the left and right sides of the outer surface of the work vehicle. The screw is arranged inside the fixing plate and both ends penetrate and extend to the outside of the fixing plate.

[0010] Preferably, the foot pad is arranged at the bottom of the screw rod, the rotating rod is arranged at the top of the screw rod, and a thread groove adapted to the size of the screw rod is formed inside the fixing plate.

[0011] Preferably, a bracket is arranged on the front surface of the outer surface of the top seat, and a sling is arranged at the bottom of the bracket.

[0012] The overall layout of the device is compact and reasonable, which can conveniently adjust the horizontal position and space height, can be applicable to the cutting requirements in various situations, facilitates the cutting task, and has high cutting accuracy at the same time.

[0013] The plasma cutting process for the remanufacture of the railway freight car body includes the following steps:

[0014] S1: After confirming the vehicle number to be cut, according to the corrosion degree of the vehicle, draw lines inside the carriage, make zoning marks on the side wall part for subsequent cutting and measurement, and draw horizontal cutting seams at the same height.

[0015] S2: Cut the horizontal lines of the end wall and side wall inside the carriage, lift the working vehicle into the carriage, and use the cooperative cutting robot to cut the side wall and end wall in zones.

[0016] S3: Lift the working vehicle to the outside of the carriage, and the worker uses the cooperative robot to perform the operations of cutting the vertical welds of the columns and the horizontal welds of the stiffeners of the end wall.

[0017] S4: Make marks on the board, divide it into seven areas A, B, C, D, E, F, and G, use a tape measure to measure the length and width dimensions of areas A, B, C, D, E, F, and G, record the specific dimensions, and use a shearing machine to accurately cut the board according to the measured cutting dimensions.

[0018] S5: Place the board strictly according to the marked positions, leave a 1MM gap between the new and old boards, and the spot welding positions are near the ends of the new and old boards.

[0019] Preferably, in step S1, a thin pen is used to draw lines, which is convenient for the cooperative cutting robot to find the alignment points. The lines drawn within the zone need to be completed in one step and be completely horizontal.

[0020] Preferably, in step S4, the shearing deviation is controlled within ±1MM.

[0021] Preferably, in step S5, attention needs to be paid to controlling the gap at the joint of the zones, and the control is within 2MM.

[0022] Through the pre-measurement and line drawing, the cutting accuracy can be greatly improved, the process of secondary cutting for fitting can be omitted, the passing ability of the bottleneck process can be improved, the quality of the plate matching can be greatly improved, and a foundation is laid for realizing automatic welding subsequently. Beneficial effects

[0023] The beneficial effects produced by the technical solution of the present invention are as follows:

[0024] 1. For the plasma cutting device and cutting process for the remanufacture of the railway freight car body, the overall layout of the device is compact and reasonable, and it can conveniently adjust the horizontal position and spatial height, being applicable to the cutting requirements in various situations, facilitating the cutting task, and having high cutting accuracy at the same time.

[0025] 2. For the plasma cutting device and cutting process for the remanufacture of the railway freight car body, through pre-measurement and scribing, the cutting accuracy can be greatly improved, the process of secondary cutting for fitting can be omitted, the passing ability of the bottleneck process can be improved, the quality of the plate matching can be greatly improved, laying a foundation for subsequent automatic welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic diagram of the overall structure of the cutting device of the plasma cutting device and cutting process for the remanufacture of the railway freight car body of the present invention;

[0028] Figure 2 It is a schematic diagram of the scribing structure of the plasma cutting device and cutting process for the remanufacture of the railway freight car body of the present invention;

[0029] Figure 3 It is a schematic diagram of the zoning structure of the plasma cutting device and cutting process for the remanufacture of the railway freight car body of the present invention.

[0030] In the figure, 1. working vehicle; 2. top seat; 3. welding system; 4. robotic arm; 5. plasma cutting machine; 6. electric cylinder; 7. guide wheel; 8. fixing device; 9. bracket; 10. lifting appliance. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0032] As Figure 1 shown, the plasma cutting device for the remanufacture of a railway freight car body includes a work vehicle 1, a welding system 3, and a robotic arm 4. A top seat 2 is provided on the top of the work vehicle 1;

[0033] The welding system 3 is arranged on the top of the work vehicle 1. The welding system 3 includes a transformer, a welding machine, and a water cooler. The transformer is arranged on the left side of the welding machine and the water cooler. The welding machine is arranged on the top of the water cooler. The robotic arm 4 is located on the top of the top seat 2. A plasma cutter 5 is provided at the end of the robotic arm 4. An electric cylinder 6 connected to the robotic arm 4 is provided on the top of the work vehicle 1. Guide wheels 7 are provided around the bottom of the work vehicle 1.

[0034] Specifically, a bracket 9 is provided on the front surface of the outer surface of the top seat 2. A lifting tool 10 is provided at the bottom of the bracket 9. The bracket 9 and the lifting tool 10 can be used as tools for carrying and hanging the lines of the plasma cutter 5.

[0035] In this embodiment, the electric cylinder 6 can complete the height adjustment of the robotic arm 4 and the plasma cutter 5 to adjust the cutting position.

[0036] As Figure 1 shown, fixing devices 8 are provided around the outer surface of the work vehicle 1. The fixing device 8 is composed of a fixing plate, a screw, a foot pad, and a rotating rod. The number of fixing plates is four and they are symmetrically distributed on the left and right sides of the outer surface of the work vehicle 1. The screw is arranged inside the fixing plate and both ends penetrate and extend to the outside of the fixing plate. The foot pad is arranged at the bottom of the screw. The rotating rod is arranged at the top of the screw. A thread groove adapted to the size of the screw is provided inside the fixing plate.

[0037] In this embodiment, by respectively turning the four rotating rods to drive the screw to rotate and descend until the four foot pads contact the ground and are tightened, the fixing of the work vehicle 1 can be conveniently completed. When it is necessary to cancel the fixing, turn the rotating rod in the reverse direction until the foot pads do not contact the ground.

[0038] The overall layout of the device of the present invention is compact and reasonable, which can conveniently adjust the horizontal position and spatial height, can meet the cutting requirements in various situations, facilitate the cutting task, and at the same time has high cutting accuracy.

[0039] As Figures 2-3 shown, the plasma cutting process for the remanufacture of railway freight car bodies includes the following steps:

[0040] S1: After confirming the vehicle number to be cut, according to the degree of vehicle corrosion, draw lines inside the carriage, and make zoning marks on the side wall part for subsequent cutting and measurement. Use a thin pen to draw lines to facilitate the collaborative cutting robot to find the alignment points. The lines drawn within the zone must be completed in one step and be completely horizontal. Make zoning marks on the side wall part for subsequent cutting and measurement, draw horizontal cutting seams at the same height to facilitate subsequent plate matching specifications, and also standardize the cutting height limit for the robot plasma cutting and flame cutting repairs;

[0041] S2: Cut the horizontal lines of the end wall and side wall inside the carriage, lift the working vehicle 1 into the carriage, and use the collaborative cutting robot to cut the side wall and end wall in zones;

[0042] S3: Lift the working vehicle 1 to the outside of the carriage, and the worker uses the collaborative robot to perform operations such as cutting the vertical welds of the columns and the horizontal welds of the end wall stiffeners;

[0043] S4: Make marks on the board, divide it into seven areas A, B, C, D, E, F, and G. Use a tape measure to measure the length and width dimensions of areas A, B, C, D, E, F, and G, record the specific dimensions, and use a power shear to accurately cut the board according to the measured cutting dimensions. The cutting deviation is controlled within ±1MM;

[0044] S5: Place the board strictly according to the marked positions, leave a 1MM gap between the new and old boards, and the spot welding positions are near the ends of the new and old boards. Pay attention to controlling the gap at the partition joints, such as between area A and area B, within 2MM.

[0045] The process of the present invention can greatly improve the cutting accuracy through pre-measurement and line drawing, eliminate the process of secondary cutting during assembly, improve the passing ability of the bottleneck process, greatly improve the quality of plate matching, and lay a foundation for subsequent automatic welding.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Plasma cutting device for remanufacturing railway freight car body, characterized in that, Including: A work vehicle (1), a welding system (3) and a robotic arm (4), a top seat (2) is arranged on the top of the work vehicle (1); The welding system (3) is arranged on the top of the work vehicle (1), the robotic arm (4) is located on the top of the top seat (2), a plasma cutting machine (5) is arranged at the end of the robotic arm (4), an electric cylinder (6) connected to the robotic arm (4) is arranged on the top of the work vehicle (1), and guide wheels (7) are arranged around the bottom of the work vehicle (1).

2. The plasma cutting device for remanufacturing the railway wagon car body according to claim 1, wherein The welding system (3) includes a transformer, a welding machine and a water cooler. The transformer is arranged on the left side of the welding machine and the water cooler, and the welding machine is arranged on the top of the water cooler.

3. The plasma cutting device for remanufacturing the railway freight car body according to claim 1, wherein, Fixing devices (8) are arranged around the outer surface of the work vehicle (1). The fixing devices (8) are composed of fixing plates, screws, foot pads and rotating rods.

4. The plasma cutting device for remanufacturing railway wagon car bodies according to claim 3, characterized in that, The number of the fixing plates is four and they are symmetrically distributed on the left and right sides of the outer surface of the work vehicle (1). The screws are arranged inside the fixing plates and both ends penetrate and extend to the outside of the fixing plates.

5. The plasma cutting device for remanufacturing railway freight car bodies according to claim 4, wherein The foot pads are arranged at the bottoms of the screws, the rotating rods are arranged at the tops of the screws, and threaded grooves adapted to the sizes of the screws are formed inside the fixing plates.

6. The plasma cutting device for remanufacturing the railway freight car body according to claim 1, wherein A bracket (9) is arranged on the front surface of the outer surface of the top seat (2), and a lifting device (10) is arranged at the bottom of the bracket (9).

7. The plasma cutting process for remanufacturing the railway freight car body according to any one of claims 1-6, characterized in that, Including the following steps: S1: After confirming the vehicle number to be cut, according to the corrosion degree of the vehicle, draw lines inside the carriage, make partition markings on the side wall part for subsequent cutting and measurement, and draw horizontal cutting seams of the same height; S2: Cut the horizontal lines of the end wall and side wall inside the carriage, lift the work vehicle (1) into the carriage, and use the collaborative cutting robot to cut the side wall and end wall in zones of the work vehicle; S3: Lift the work vehicle (1) outside the carriage, and the worker uses the collaborative robot to perform operations such as plasma cutting the vertical weld seams of the columns and the horizontal weld seams of the end wall stiffeners; S4: Make marks on the board, divide it into seven areas A, B, C, D, E, F, and G, use a tape measure to measure the length and width dimensions of areas A, B, C, D, E, F, and G, record the specific dimensions, and use a plate shearing machine to accurately cut the plate according to the measured cutting dimensions; S5: Place the board strictly according to the marked positions, leave a 1MM gap between the new and old boards, and the spot welding positions are near the ends of the new and old boards.

8. The plasma cutting process for remanufacturing the railway wagon car body according to claim 7, wherein, In step S1, use a fine pen to draw lines, which is convenient for the collaborative cutting robot to find the alignment points. The lines drawn within the partition need to be completed in one step and be completely horizontal.

9. The plasma cutting process for remanufacturing the railway wagon carbody according to claim 7, characterized in that, In step S4, the shearing deviation is controlled within ±1MM.

10. The plasma cutting process for remanufacturing the railway freight car body according to claim 7, wherein, In step S5, attention needs to be paid to controlling the gap at the partition joints, and the control is within 2MM.

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