A welding process for mounting seat of subway door mechanism

Abstract

The present invention discloses a method for welding the mounting seat of a subway door mechanism, including S1, material inspection, and preparation of tools and equipment; S2, welding the mounting seat at the side wall; S3, welding the mounting seat at the roof; S4, detection of the mounting seat, which is divided into detection of the mounting seat at the side wall and detection of the mounting seat at the roof. The process method of the present invention uses a variety of tools and assembly tooling to locate the three-dimensional spatial dimensions of the door mechanism mounting seat, and at the same time, by refining the mounting seat assembly steps, clarifying the key points of operation, and controlling the welding deformation through a specific welding sequence, and finally, through the post-completion inspection standard, the size of the mounting seat is recorded to ensure that the size meets the installation requirements, eliminate the on-site repair and adjustment problems of the mounting seat during the door mechanism installation, and improve production efficiency and product quality.

Description

Technical Field

[0001] The invention relates to the technical field of subway door mechanism mounting seat installation process, and in particular to a subway door mechanism mounting seat assembly welding process method. Background Art

[0002] There are designated implementation standards for subways that are exported, and the plug door is the main subway door structure. During the assembly and installation process, the dimensional accuracy of the car body mounting seat is very high, including the dimensions in the three directions of height, width, and length. At the same time, there are requirements for the flatness and straightness of the mounting seat. In actual production, since the mounting seat on the side wall and the mounting seat on the roof need to be used in conjunction with each other, and at the same time, the three-dimensional space size requirements are required, and are affected by welding deformation, after the assembly is completed, on-site research, repair, and adjustment are required during the installation of the door mechanism, so as to finally meet the installation requirements of the door mechanism in the assembly process, which directly affects product quality and production efficiency.

[0003] Therefore, based on the above technical problems, technicians in this field urgently need to develop a welding process method for a subway door mechanism mounting seat. Summary of the invention

[0004] The purpose of the invention is to provide a new process method for the assembly welding of a subway door mechanism mounting seat, so as to improve the production efficiency of the product, avoid welding deformation, and improve the installation quality of the product.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A method for welding a subway door mechanism mounting seat according to the present invention mainly comprises the following steps:

[0007] S1. Inspection of materials and preparation of tools and equipment, mainly inspection of the size of the mounting seat at the side wall and the size of the mounting seat at the roof;

[0008] S2. Assemble and weld the mounting seat at the side wall, use tools to determine the height of the mounting seat at the side wall based on the upper surface of the floor cloth, and draw lines on the reinforcement plate. Fix the support plate according to the marked position of the reinforcement plate, and use tools to determine the position of the mounting seat slideway;

[0009] S3, assemble and weld the roof mounting seat, use the assembly tool to determine the position of the roof mounting seat with the upper surface of the floor cloth as the reference, and fix the roof mounting seat with the bent beam welding point of the door buckle iron;

[0010] S4. The inspection of the mounting seat is divided into the inspection of the mounting seat at the side wall and the inspection of the mounting seat at the roof.

[0011] Furthermore, the step S2 mainly includes the following steps:

[0012] S201. Using the upper surface of the floor cloth as a reference, use the ruler in the tool to determine the height of the side wall mounting seat, and mark four locations on the reinforcing plate, the four locations being the two sides of the door and the two ends of the side wall mounting seat;

[0013] S202, at the marking position of step S201, align the upper edge of the support plate with the marking position, and perform point fixing. At the same time, use a level ruler to measure the verticality of the support plate and the reinforcement plate so that the support plate is parallel to the horizontal plane;

[0014] S203, place the board ruler on the support plate of step S202, take the installation point position of the mounting seat on the side wall on both sides of the center of the door, use a plumb line and a tape measure to measure the distance between the first vertical surface of the board ruler and the surface of the door buckle iron, and after adjusting the size, fix the lower part of the positioning plate to the side of the support plate, and make the upper part of the positioning plate close to the second vertical surface of the board ruler;

[0015] S204, placing the side wall mounting seat slide groove on the support plate between the plate ruler and the reinforcement plate, adjusting the length dimension of the slide groove, and finally performing point fixing;

[0016] S205, remove the ruler, the support plate and the positioning plate, and grind the spot welding points between the support plate and the reinforcement plate;

[0017] S206, welding the mounting seat at the side wall.

[0018] Furthermore, in step S206, only the welds above and below the mounting point are welded, and the welding sequence of the mounting seat at the side wall is:

[0019] The four welds of the mounting seat at each side wall are welded alternately up and down, and the welding amount above and below the mounting point is kept consistent.

[0020] Furthermore, the step S3 mainly includes the following steps:

[0021] S301, placing the tooling assembly on the upper surface of the floor cloth, with its length direction placed at the installation points on both sides of the center of the door, and the width positioning vertical plate of the tooling assembly is in close contact with the outer surface of the door buckle iron;

[0022] S302, placing the board ruler on the height support plate, using a digital level to adjust the support column to be perpendicular to the surface of the floor cloth, and using F-claws to clamp the assembly tool and the board ruler, and using F-claws to fix the width positioning board and the door beam;

[0023] S303, placing the vehicle roof mounting seat on the upper surface of the board ruler, adjusting the size of the vehicle roof mounting seat in the vehicle length direction, and after the adjustment is completed, using a quick clamp to clamp and fix the vehicle roof mounting seat and the board ruler at the mounting points, and there are 4 mounting points;

[0024] S304, spot-solidifying the contact between the roof mounting seat and the curved beam by welding;

[0025] S305, remove the F-carriage, quick clamp, ruler and assembly tooling;

[0026] S306, welding the roof mounting seat.

[0027] Furthermore, the installation sequence of the roof mounting seat is symmetrical welding from the center to both sides.

[0028] Furthermore, the step S4 mainly includes:

[0029] S401, use tools to detect the height, width, and length dimensions of the mounting seat at the side wall, and fill in the detection record form;

[0030] S402. Use tools to inspect the height, width and length dimensions of the roof mounting seat, and fill in the inspection record sheet.

[0031] In the above technical solution, the present invention provides a method for welding a subway door mechanism mounting seat, which has the following beneficial effects:

[0032] The process method of the present invention utilizes a variety of tools and assembly fixtures to locate the three-dimensional spatial dimensions of the door mechanism mounting seat, and at the same time, by refining the mounting seat assembly steps, clarifying the key points of operation, and through a specific welding sequence, the control of welding deformation is achieved. Finally, through the post-completion inspection standard, the size of the mounting seat is recorded to ensure that the size meets the installation requirements, eliminate the on-site rework and adjustment of the mounting seat during the installation of the door mechanism, and improve production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. It is obvious that the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a front view of a side wall mounting seat welded in a subway door mechanism mounting seat welding process method disclosed in an embodiment of the present invention;

[0035] Figure 2 It is a side view of a mounting seat for welding a side wall in a method for welding a mounting seat for a subway door mechanism disclosed in an embodiment of the present invention;

[0036] Figure 3A schematic diagram of the welding sequence of welding the mounting seat of the side wall in a method for welding the mounting seat of a subway door mechanism disclosed in an embodiment of the present invention;

[0037] Figure 4 It is a front view of a welding vehicle roof mounting seat in a method for welding a subway door mechanism mounting seat disclosed in an embodiment of the present invention;

[0038] Figure 5 It is a side view of a welding vehicle roof mounting seat in a method for welding a subway door mechanism mounting seat disclosed in an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the welding sequence of welding a roof mounting seat in a method for welding a mounting seat of a subway door mechanism disclosed in an embodiment of the present invention;

[0040] Figure 7 The present invention discloses a process flow chart of a method for welding a subway door mechanism mounting seat.

[0041] Description of reference numerals:

[0042] 1. The upper surface of the floor cloth; 2. The ruler; 3. The reinforcement plate; 4. The slide; 5. The support plate; 6. The positioning plate; 7. The door buckle; 8. The plumb line; 9. The board ruler; 10. The assembly tooling;

[0043] A. Side wall mounting seat; B. Roof mounting seat;

[0044] 701, curved beam;

[0045] 901, first facade; 902, second facade;

[0046] 1001. Height support plate; 1002. Width positioning horizontal plate; 1003. Width positioning vertical plate; 1004. Support column. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0048] See also Figure 1 to Figure 7 As shown;

[0049] A method for welding a subway door mechanism mounting seat in this embodiment mainly includes the following steps:

[0050] S1. Material inspection, preparation of tools and equipment, mainly inspection of the material size of the side wall mounting seat A and the material size of the roof mounting seat B;

[0051] S2. Assemble and weld the mounting seat A at the side wall, use a tool to determine the height of the mounting seat A at the side wall with the upper surface 1 of the floor cloth as a reference, and make a mark on the reinforcing plate 3. Fix the support plate 5 according to the marked position of the reinforcing plate 3, and use a tool to determine the position of the mounting seat slide 4;

[0052] S3, assembling and welding the roof mounting seat B, using the assembly tool 10 to determine the position of the roof mounting seat B with the upper surface 1 of the floor cloth as a reference, and welding the roof mounting seat B to the curved beam 701 of the door buckle 7;

[0053] S4. The inspection of the mounting seat is divided into the inspection of the mounting seat A at the side wall and the inspection of the mounting seat B at the roof.

[0054] Specifically, according to the assembly welding requirements of the subway door mechanism mounting seat, this embodiment divides the assembly welding of the mounting seat into two parts, one part is the assembly welding of the mounting seat A at the side wall, and the other part is the assembly welding of the mounting seat B at the roof.

[0055] Preferably, step S2 of this embodiment mainly includes the following steps:

[0056] S201, using the upper surface 1 of the floor cloth as a reference, using the ruler 2 in the tool to determine the height of the side wall mounting seat A, and marking four positions on the reinforcing plate 3, the four marking positions being respectively at the two sides of the door and the two ends of the side wall mounting seat A;

[0057] S202, at the marking position of step S201, the upper edge of the support plate 5 is aligned with the marking position, and point-fixed, and at the same time, the verticality of the support plate 5 and the reinforcing plate 3 is measured with a level ruler, so that the support plate 5 is parallel to the horizontal plane;

[0058] S203, place the board ruler on the support plate of step S202, take the installation point position of the mounting seat A on the side wall on both sides of the center of the door, use the plumb line 8 and the measuring tape to measure the distance between the first vertical surface 901 of the board ruler 9 and the surface of the door buckle 7, and after adjusting the size, fix the lower part of the positioning plate 6 to the side of the support plate 5, and make the upper part of the positioning plate 6 close to the second vertical surface 902 of the board ruler 9;

[0059] S204, placing the side wall mounting seat slide 4 on the support plate 5 between the plate ruler 9 and the reinforcing plate 3, adjusting the length direction dimension of the slide 4, and finally performing point fixing;

[0060] S205, remove the plate ruler 9, and simultaneously remove the support plate 5 and the positioning plate 6, and grind the spot welding points between the support plate 5 and the reinforcing plate 3;

[0061] S206, welding the mounting seat A at the side wall.

[0062] In order to avoid welding deformation, in the above step S206, only the welds above and below the mounting point are welded, and the welding sequence of the mounting seat A at the side wall is:

[0063] The four welds of the mounting seat A at each side wall are welded alternately up and down, and the welding amount above and below the mounting point is kept consistent.

[0064] When welding the mounting base A at the side wall, it is not allowed to weld one side before welding the other side. The welding sequence of this embodiment can effectively avoid the influence on the angle.

[0065] Preferably, step S3 of this embodiment mainly includes the following steps:

[0066] S301, placing the assembly tool 10 on the upper surface 1 of the floor cloth, with its length direction placed at the installation points on both sides of the center of the door, and the width positioning vertical plate 1003 of the assembly tool 10 is in close contact with the outer surface of the door buckle 7;

[0067] S302, place the board ruler 9 on the height support plate 1001, use the digital level to adjust the support column 1004 to be perpendicular to the surface of the floor cloth, and use the F-claw to clamp the assembly tool 10 and the board ruler, and use the F-claw to fix the width positioning plate 1003 to the door beam;

[0068] S303, placing the roof mounting seat B on the upper surface of the board ruler 9, adjusting the size of the roof mounting seat B in the vehicle length direction, and after the adjustment is completed, using a quick clamp to clamp and fix the roof mounting seat B and the board ruler 9 at the mounting points, and there are 4 mounting points;

[0069] S304, welding the contact point between the roof mounting seat B and the curved beam 701;

[0070] S305, remove the F calliper, quick clamp, ruler 9 and assembly tool 10;

[0071] S306, welding the vehicle roof mounting seat B.

[0072] In order to avoid welding deformation, the installation sequence of the roof mounting seat B is symmetrical welding from the center to both sides, and the welds between the roof mounting seat B and the roof curved beam 701 are completed in sequence.

[0073] Finally, the welded mounting bases are inspected respectively, specifically: Step S4 mainly includes:

[0074] S401, using tools to detect the height, width, and length dimensions of the mounting seat A at the side wall, and fill in the detection record sheet;

[0075] S402. Use tools to inspect the height, width and length of the roof mounting seat B, and fill in the inspection record sheet.

[0076] In the above technical solution, the present invention provides a method for welding a subway door mechanism mounting seat, which has the following beneficial effects:

[0077] The process method of the present invention utilizes a variety of tools and assembly tooling 10 to locate the three-dimensional spatial dimensions of the door mechanism mounting seat. At the same time, by refining the mounting seat assembly steps and clarifying the operating points, the welding deformation is controlled through a specific welding sequence. Finally, through the post-completion inspection standard, the mounting seat dimensions are recorded to ensure that the dimensions meet the installation requirements, eliminate on-site rework and adjustment problems of the mounting seat during door mechanism installation, and improve production efficiency and product quality.

[0078] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for welding a subway door mechanism mounting seat, characterized in that: The process comprises the following steps: S1. Material inspection, preparation of tools and equipment, inspection of material dimensions of the side wall mounting seat (A) and the roof mounting seat (B); S2, assembling and welding the side wall mounting seat (A), using a tool to determine the height of the side wall mounting seat (A) with the upper surface (1) of the floor cloth as a reference, and marking a line on the reinforcing plate (3), fixing the support plate (5) according to the marked position of the reinforcing plate (3), and using a tool to determine the position of the mounting seat slide groove (4); The above step S2 includes the following steps: S201, using the upper surface (1) of the floor cloth as a reference, using the ruler (2) in the tool to determine the height of the side wall mounting seat (A), and marking four positions on the reinforcing plate (3), the four marking positions being the two sides of the door and the two ends of the side wall mounting seat (A); S202, at the marking position in step S201, the upper edge of the support plate (5) is aligned with the marking position and spot-fixed, and at the same time, a level ruler is used to measure the verticality of the support plate (5) and the reinforcing plate (3) so that the support plate (5) is parallel to the horizontal plane; S203, place the ruler on the support plate (5) of step S202, take the installation point position of the mounting seat (A) at the side wall part on both sides of the center of the door, use the plumb line (8) and the measuring tape to measure the distance between the first vertical surface (901) of the ruler (9) and the surface of the door buckle (7), and after adjusting the size, fix the lower part of the positioning plate (6) on the side of the support plate (5), and make the upper part of the positioning plate (6) close to the second vertical surface (902) of the ruler (9); S204, placing the mounting seat slide groove (4) at the side wall portion on the support plate (5) between the plate ruler (9) and the reinforcing plate (3), adjusting the length direction dimension of the slide groove (4), and finally performing point fixing; S205, remove the plate ruler (9), and simultaneously remove the support plate (5) and the positioning plate (6), and grind the spot welding points between the support plate (5) and the reinforcing plate (3); S206, welding the mounting seat (A) at the side wall; S3, assembling and welding the roof mounting seat (B), using the assembly tool (10) to determine the position of the roof mounting seat (B) with the upper surface (1) of the floor cloth as a reference, and welding the roof mounting seat (B) to the curved beam (701) of the door buckle (7); S4. The inspection of the mounting seat is divided into the inspection of the mounting seat at the side wall (A) and the inspection of the mounting seat at the roof (B).

2. A method for welding a subway door mechanism mounting seat according to claim 1, characterized in that: In step S206, only the welds above and below the mounting point are welded, and the welding sequence of the side wall mounting seat (A) is: The four welds of the mounting seat (A) at each side wall are welded alternately up and down, and the welding amount above and below the mounting point is kept consistent.

3. The method for welding a subway door mechanism mounting seat according to claim 1, characterized in that: The step S3 comprises the following steps: S301, placing the assembly tool (10) on the upper surface of the floor cloth (1), with its length direction placed at the installation points on both sides of the center of the door, and the width positioning vertical plate (1003) of the assembly tool (10) is in close contact with the outer surface of the door buckle (7); S302, placing the board ruler (9) on the height support plate (1001), adjusting the support column (1004) to be perpendicular to the surface of the floor cloth using a digital level, clamping the assembly tool (10) and the board ruler (9) using an F-claw, and fixing the width positioning plate (1003) to the door beam using an F-claw; S303, placing the vehicle roof mounting seat (B) on the upper surface of the board ruler (9), adjusting the size of the vehicle roof mounting seat (B) in the vehicle length direction, and after the adjustment is completed, using a quick clamp to clamp and fix the vehicle roof mounting seat (B) and the board ruler (9) at the mounting points, and there are 4 mounting points; S304, spot-welding the contact points between the roof mounting seat (B) and the curved beam (701); S305, remove the F-carriage, quick clamp, ruler (9) and assembly tool (10); S306, welding the roof mounting seat (B).

4. A method for welding a subway door mechanism mounting seat according to claim 3, characterized in that: The installation sequence of the roof mounting seat (B) is symmetrical welding from the center to both sides.

5. The method for welding a subway door mechanism mounting seat according to claim 1, characterized in that: The step S4 comprises: S401. Use tools to inspect the height, width and length of the mounting seat (A) at the side wall, and fill in the inspection record sheet; S402. Use tools to inspect the height, width and length of the roof mounting seat (B), and fill in the inspection record sheet.

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