Assembling and welding platform for marine diesel engine rack single piece

Abstract

The utility model provides an assembling and welding platform for a marine diesel engine rack single piece, which relates to the technical field of assembling and welding of marine diesel engine rack single pieces and comprises a bottom plate, a limiting plate which is welded and fixed perpendicular to the bottom plate, and two positioning plates which are provided with guide rail grooves and are welded and fixed perpendicular to the bottom plate, the platform and the rack single piece form an embedded structure; the guide rail plate is embedded in the guide rail groove of the positioning plate; the wing plates and the web plates are arranged on the two sides and the middle of the guide rail plate respectively. By using the assembling and welding platform, the assembling and welding difficulty of the rack single piece is reduced, and the strength and the precision of the rack single piece meet the requirements of drawings and process files. Assembly welding is carried out on the working platform, so that the production efficiency is improved, and the labor conditions of workers are improved.

Description

Technical Field

[0001] This utility model relates to the field of assembly and welding technology of marine engine frame pieces, and in particular to an assembly and welding platform for marine diesel engine frame pieces. Background Technology

[0002] Marine engines require high precision and strength, and the traditional 6G60MEC frame is constructed using a modular welding process. This process involves multiple positioning and welding operations, which can easily lead to positional and dimensional deviations, errors exceeding allowable limits, and other problems, affecting the overall engine delivery schedule.

[0003] Therefore, improving the single-piece welding process of the 6G60MEC rack is an important task in order to improve work efficiency and reduce production costs. The existing production method for single rack pieces involves hoisting the wing plates to the surface of the guide rail plate, calibrating and positioning them by adjusting the tooling, repeatedly measuring to ensure that the deviation and perpendicularity meet the specified requirements, and then performing tack welding. After the tack welding of the two wing plates to the guide rail plate is completed, they are then positioned and welded to the web plate.

[0004] To simplify the process, reduce the time spent on positioning and inspection in existing processes, and improve production quality, this invention designs a single-piece frame work platform suitable for a single machine model, which simplifies the single-piece frame welding process and reduces potential quality problems. Utility Model Content

[0005] This utility model provides an assembly and welding platform for a single piece of marine diesel engine frame, which reduces the difficulty of assembling and welding the single piece of frame, improves production efficiency, and improves the working conditions of workers.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An assembly and welding platform for a single piece of marine diesel engine frame includes: a base plate, a limiting plate welded and fixed perpendicular to the base plate, and two positioning plates with guide rail grooves welded and fixed perpendicular to the base plate; the platform and the single piece of frame form an interlocking structure, wherein: the guide rail plates are interlocked in the guide rail grooves of the positioning plates; the wing plates and the web plates are respectively disposed on both sides and the middle of the guide rail plates.

[0008] Furthermore, the platform also includes several support plates, which are welded and fixed to the base plate to maintain the perpendicularity of the limiting plate and the positioning plate.

[0009] Furthermore, the limiting plate and the positioning plate are symmetrically distributed on the base plate.

[0010] Furthermore, the depth of the guide rail groove of the positioning plate is equal to the distance between the wing plate, the web plate and the side surface of the guide rail plate, which is used to reduce the positioning direction of the wing plate from six to four.

[0011] Furthermore, the limiting plate is used to limit the position of the frame base plate and guide rail plate in the frame unit, and it is in direct contact with the frame base plate and guide rail plate.

[0012] Furthermore, the support plates are symmetrically distributed on the base plate to ensure the perpendicularity of the limiting plate and the positioning plate.

[0013] The beneficial effects of this utility model are as follows:

[0014] By using this assembly and welding platform, the difficulty of assembling and welding individual frame pieces was reduced, ensuring that their strength and precision met the requirements of drawings and process documents. Welding on the work platform improved production efficiency and enhanced working conditions for workers. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a partial structural diagram of the present utility model.

[0018] Explanation of icon numbers:

[0019] 1. Base plate; 2. Limiting plate; 3. Positioning plate; 4. Support plate; 5. Wing plate; 6. Guide rail plate; 7. Web plate; 8. Frame base plate. Detailed Implementation

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0024] This utility model provides a technical solution: an assembly and welding platform for a single piece of marine diesel engine frame, such as... Figure 1-2 As shown, the system includes a base plate 1, a limiting plate 2, two positioning plates 3 with guide rail grooves, and several support plates 4. The limiting plate 2 and positioning plates 3 are welded perpendicular to the base plate 1, and their perpendicularity is maintained by the support plates 4. The components are symmetrically distributed on the base plate 1, and the surface is painted with yellow glossy paint. The wing plate 5, guide rail plate 6, web plate 7, and frame base plate 8 are positioned and welded on the working platform.

[0025] This platform forms an interlocking structure with the frame unit. To limit the position of the frame base plate 8 and guide rail plate 6, the limiting plate 2 contacts the frame base plate 8 and guide rail plate 6; the depth of the two guide rail grooves of the positioning plate 3 is equal to the distance between the wing plate 5, the web plate 7 and the side surface of the guide rail plate 6 in the drawing, reducing the positioning of the wing plate 5 from six directions to four directions. After the guide rail plate 6 is hoisted into the guide rail groove of the positioning plate 3 and its side surface contacts the limiting plate 2, the wing plate 5 and the web plate 7 are hoisted to the sides and middle of the guide rail plate 6 respectively and aligned to ensure that the web plate 7 and the guide rail plate 6 are in the correct position. After checking that its dimensional accuracy meets the requirements, the unit is tack welded and then flipped for welding to complete the assembly welding of the frame unit.

[0026] In the assembly and welding of 6G60MEC rack units, the use of a work platform simplifies the assembly and welding process, improves work efficiency, and reduces the time spent on positioning, inspection, and welding of rack units.

[0027] The work process is as follows:

[0028] 1. Material preparation

[0029] Use CNC flame cutting machine and CNC laser cutting machine to cut the steel plate. Leave a 10mm margin on the edge of the steel plate and a 5mm gap between each cut part. Leave a 2mm welding shrinkage allowance on each edge of the cut part. Mark the item and part number on the surface of the cut part and then transport it to the cutting area for beveling.

[0030] 2. Assembly and welding

[0031] Beforehand, spot weld the guide rail plate 6 to the frame base plate 8. Then, hoist the guide rail plate 6 and frame base plate 8 onto the work platform, ensuring the guide rail plate 6 is fully fitted into the guide rail groove of the positioning plate 3, with its side surface and the surface of the frame base plate 8 in contact with the limiting plate 2. Hoist the web plate 7 and wing plate 5 to the middle and sides of the guide rail plate, respectively. Adjust the positions of the web plate 7 and wing plate 5, and perform tack welding with a maximum spacing of 500mm and a minimum length of 75mm. Then, flip the entire piece over, completely filling the back weld seam, and flip it again to fill the remaining weld seam.

[0032] 3. Inspection and Correction

[0033] After welding, the weld beads are subjected to UT and MT inspections. Any defective parts are planed and re-welded until all weld beads meet the drawing requirements. The weld surface is then ground to remove excess weld metal.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An assembly and welding platform for a single piece of marine diesel engine frame, characterized in that, include: The platform consists of a base plate (1), a limiting plate (2) welded and fixed perpendicular to the base plate (1), and two positioning plates (3) with guide rail grooves welded and fixed perpendicular to the base plate (1). The platform and the frame form a single-piece interlocking structure, wherein: the guide rail plate (6) is interlocked in the guide rail groove of the positioning plate (3); the wing plate (5) and the web plate (7) are respectively set on both sides and the middle of the guide rail plate (6).

2. The assembly and welding platform for a single piece of marine diesel engine frame according to claim 1, characterized in that, The platform also includes several support plates (4), which are welded and fixed to the base plate (1) to maintain the verticality of the limiting plate (2) and the positioning plate (3).

3. The assembly and welding platform for a single piece of marine diesel engine frame according to claim 1, characterized in that, The limiting plate (2) and the positioning plate (3) are symmetrically distributed on the base plate (1).

4. The assembly and welding platform for a single piece of marine diesel engine frame according to claim 1, characterized in that, The depth of the guide groove of the positioning plate (3) is equal to the distance between the wing plate (5), the web plate (7) and the side surface of the guide plate (6), which is used to reduce the positioning direction of the wing plate (5) from six to four.

5. The assembly and welding platform for a single piece of marine diesel engine frame according to claim 1, characterized in that, The limiting plate (2) is used to limit the position of the frame base plate (8) and guide rail plate (6) in the frame single piece, and it is in direct contact with the frame base plate (8) and guide rail plate (6).

6. The assembly and welding platform for a single piece of marine diesel engine frame according to claim 2, characterized in that, The support plate (4) is symmetrically distributed on the base plate (1) to ensure the perpendicularity of the limiting plate (2) and the positioning plate (3).

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