Embedded flange fast positioning clamp and assembly welding method

Abstract

The application discloses a kind of embedded flange quick positioning fixture and assembly welding method, including mould base, connecting bolt, lifting ring bolt, adjusting jack, locking plate, adjustable pressure disc, pressure distribution device, pressure nut and center screw;Along the circumferential direction of the mould base, connecting bolt, lifting ring bolt, adjusting jack are connected thereon;Along the radial direction of the mould base, through groove is provided;Center screw is arranged in the center of the mould base;And the upper portion of mould base is provided with adjustable pressure disc, adjustable pressure disc is sleeved on center screw, the outer ring of adjustable pressure disc is provided with opening, one end of locking plate can be inserted into the opening after rotating inward;Pressure distribution device is arranged on the top of adjustable pressure disc, the top of pressure distribution device is pressure nut, and pressure nut, pressure distribution device are also matched with center screw.

Description

Technical Field

[0001] This invention belongs to the field of flange positioning, specifically relating to an embedded flange quick positioning fixture and assembly welding method. Background Technology

[0002] Embedded flanges are a common structural component in welding manufacturing, frequently used in marine diesel engine frames, bases, and exhaust pipes. Existing embedded flanges are made from sheet metal, resulting in large sizes and heavy weights. Traditional manual handling, assembly, and welding are inefficient, unsafe, and difficult to guarantee flatness tolerances. If flatness exceeds tolerances, large gantry machining centers are required for milling, leading to significant cost waste. Excessive errors during assembly can result in poor sealing of the flange sealing surface and excessive assembly gaps, severely impacting product quality. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention proposes a rapid positioning fixture and assembly / welding method for embedded flanges to solve the problems of low assembly efficiency and poor quality in embedded flange assembly and welding using efficient methods or tooling.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] In a first aspect, the present invention proposes an embedded flange quick positioning fixture, including a fixture base, connecting bolts, lifting eye bolts, adjusting top screws, locking plate, adjustable pressure plate, pressure force distributor, pressure nut and center screw;

[0006] Along the circumference of the fixture base, connecting bolts, eye bolts, and adjusting screws are connected thereon; a through groove is provided along the radial direction of the fixture base; a central screw is provided at the center of the fixture base; and an adjustable clamping plate is provided on the upper part of the fixture base, which is fitted onto the central screw. The outer ring of the adjustable clamping plate has an opening, and one end of the locking plate can be inserted into the opening after it is rotated inward; a clamping force distributor is provided on the top of the adjustable clamping plate, and the top of the clamping force distributor is a clamping nut, and both the clamping nut and the clamping force distributor cooperate with the central screw.

[0007] As a further technical solution, the fixture base is a disc-shaped structure, including an outer annular disc and an inner annular disc. The outer annular disc and the inner annular disc are connected by two vertical connecting plates, and the through grooves are provided on the two vertical connecting rods.

[0008] As a further technical solution, the connecting plate extends to the outer ring of the annular outer disk, and a first threaded hole that mates with the adjusting set screw is provided at the end of the connecting plate.

[0009] As a further technical solution, a second threaded hole that mates with the connecting bolt and a third threaded hole that mates with the lifting eye bolt are provided on the annular outer disk.

[0010] As a further technical solution, the second threaded hole and the third threaded hole are distributed alternately.

[0011] As a further technical solution, a clamping nut handle is provided on the clamping nut.

[0012] As a further technical solution, two pressure plate handles are provided on the outer ring of the pressure plate.

[0013] As a further technical solution, the number of openings on the outer ring of the adjustable clamping disc is equal to the number of locking plates.

[0014] As a further technical solution, the locking plate is connected to the fixture base via a support.

[0015] Secondly, the present invention also proposes a method for applying a weld resistance seal to a flange using an embedded flange quick positioning fixture, as follows;

[0016] Step 1: Move the tooling to the work area;

[0017] Step 2: Insert the eye bolt into the fixture base and rotate the end of the eye bolt until it is flush with the bottom of the fixture base;

[0018] Step 3: Hoist the positioning jig onto the flange, lower it to a set distance from the flange surface and stop, adjust the positioning jig to align with the flange, lower it onto the flange surface, and rotate the lifting eye bolts to achieve the initial connection between the positioning jig and the flange;

[0019] Step 4: Screw in the connecting bolts to connect the fixture base to the flange.

[0020] Step 5: According to the height dimensions of the flange and mounting plate in the drawing, pre-adjust the adjusting screws, using the adjusting screws as support points, and lower them onto the surface of the flange mounting plate;

[0021] Step 6: Insert the adjustable clamping disc into the central screw and lower it onto the surface of the fixture base;

[0022] Step 7: Align the opening on the adjustable clamping plate with the locking plate at the bottom of the fixture base.

[0023] Step 8: Rotate the locking plate inward until the locking plate enters the opening of the adjustable clamping plate;

[0024] Step 9: While rotating the locking plate, raise the adjustable clamping plate above the top corner of the locking plate, and then rotate the adjustable clamping plate 45 degrees around the center screw.

[0025] Step 10: Insert the clamping force distributor onto the central screw, and let the bottom rest on the surface of the adjustable clamping plate;

[0026] Step 11: Screw the clamping nut onto the center screw;

[0027] Step 12: Rotate the clamping nut handle to press the adjustable clamping plate downwards until the locking plate completely locks the flange mounting plate.

[0028] Step 13: Weld the flange and flange mounting plate;

[0029] Step 14: Loosen the clamping nut and rotate the adjustable clamping plate until the opening is aligned with the initial position of the locking plate. Under the influence of gravity and eccentricity, the locking plate will naturally rotate to a position perpendicular to the base of the fixture.

[0030] Step 1: Remove the connecting bolts, rotate the eye bolts until the threads are disengaged from the flange, and only connect to the jig base;

[0031] Step 16: Lift the positioning jig away from the flange to complete the final welding.

[0032] The beneficial effects of the above embodiments of the present invention are as follows:

[0033] The embedded flange quick positioning fixture and welding method of this invention can be used to assemble various types of flanges in sequence. This method is safe, takes up less time for the overhead crane, and is highly safe and efficient. This tooling solution has been successfully applied to the company's diesel engines and other similar structural components. Attached Figure Description

[0034] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0035] Figure 1 This is a schematic diagram of the positioning fixture structure;

[0036] Figure 2 This is a schematic diagram of the positioning fixture structure;

[0037] Figure 3 This is a structural schematic diagram of the positioning flange;

[0038] Figure 4 This is a schematic diagram of step 1;

[0039] Figure 5 This is a schematic diagram of step 2;

[0040] Figure 6 , Figure 7 This is a schematic diagram of step 3;

[0041] Figure 8This is a schematic diagram of step 4;

[0042] Figure 9 This is a schematic diagram of the flange mounting plate;

[0043] Figure 10 This is a schematic diagram of step 5;

[0044] Figure 11 This is a schematic diagram of step 6;

[0045] Figure 12 This is a schematic diagram of step 7;

[0046] Figure 13 , Figure 14 This is a schematic diagram of step 8;

[0047] Figure 15 , Figure 16 This is a schematic diagram of step 9;

[0048] Figure 17 This is a schematic diagram of step 10;

[0049] Figure 18 , Figure 19 This is a schematic diagram of step 11;

[0050] Figure 20 This is a schematic diagram of step 12;

[0051] Figure 21 , Figure 22 This is a schematic diagram of step 13;

[0052] Figure 23 , Figure 24 This is a schematic diagram of step 14;

[0053] Figure 25 This is a schematic diagram of step 15;

[0054] In the diagram: the spacing or dimensions between parts are exaggerated to show their positions. The diagram is for illustrative purposes only. 1-Jig base, 2-Connecting bolt, 3-Lifting eye bolt, 4-Adjusting set screw, 5-Rotating support, 6-Locking plate, 7-Rotating shaft, 8-Adjustable clamping plate, 9-Clamping plate handle, 10-Clamping force distributor, 11-Clamping nut, 12-Center screw, 13-Clamping nut handle. Detailed Implementation

[0055] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0056] 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 scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. 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.

[0057] For ease of description, the use of the words "upper" and "lower" in this invention only indicates that they correspond to the upper and lower directions of the accompanying drawings and do not limit the structure. They are merely for the purpose of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0058] As described in the background section, the existing technology has shortcomings. In order to solve the above technical problems, the present invention proposes an embedded flange quick positioning fixture; including a fixture base, connecting bolts, lifting eye bolts, adjusting top screws, locking plate, adjustable pressure plate, pressure force distributor, pressure nut and center screw;

[0059] Along the circumference of the fixture base, connecting bolts, eye bolts, and adjusting screws are connected thereon; a through groove is provided along the radial direction of the fixture base; a central screw is provided at the center of the fixture base; and an adjustable clamping plate is provided on the upper part of the fixture base, which is fitted onto the central screw. The outer ring of the adjustable clamping plate has an opening, and one end of the locking plate can be inserted into the opening after it is rotated inward; a clamping force distributor is provided on the top of the adjustable clamping plate, and the top of the clamping force distributor is a clamping nut, and both the clamping nut and the clamping force distributor cooperate with the central screw.

[0060] In a typical embodiment of the present invention, such as Figure 1 As shown, the embedded flange quick positioning fixture disclosed in this embodiment includes a jig base 1, connecting bolts 2, lifting eye bolts 3, adjusting set screws 4, rotating support 5, locking plate 6, rotating shaft 7, adjustable pressure plate 8, pressure plate handle 9, pressure force distributor 10, pressure nut 11, center screw 12, and pressure nut handle 13.

[0061] The fixture base 1 is a disc-shaped structure, comprising an outer annular disc and an inner annular disc. The outer annular disc and the inner annular disc are connected by two vertical connecting rods. Through grooves are provided on the two vertical connecting rods. A central screw 12 is provided at the center of the inner disc of the fixture base 1.

[0062] There are 12 holes on the outer ring plate, divided into three groups, each group including four holes. The three groups of holes have different functions and are defined as the first group of holes, the second group of holes, and the third group of holes, respectively. The first group of holes is located on the part of the connecting plate that extends out of the outer ring plate. All the holes in the first group are threaded holes. Each threaded hole is matched with an adjusting screw 4. There are a total of four adjusting screws 4. The four adjusting screws 4 serve as the fulcrum between the jig base 1 and the flange mounting plate.

[0063] The other two sets of holes are located on the annular outer plate of the fixture base 1. The second set of holes corresponds to the four first set of holes in the extension in sequence. The second set of holes are also threaded holes, which are matched with four connecting bolts 2. The four connecting bolts are used to connect the fixture base 1 and the flange.

[0064] The third set of holes is located between two adjacent threaded holes in the second set of holes, and there are also four of them. The third set of holes are also threaded holes, which are used to mate with the eye bolt 3; the eye bolt 3 is also used to connect the jig base 1 and the flange.

[0065] The four connecting rods between the outer and inner rings have through slots that connect to four rotating supports 5. Each rotating support 5 is connected to a locking plate 6 via a rotating shaft 7. The locking plate 6 can rotate around the rotating shaft 7. When the locking plate 6 rotates to a certain angle, one end of it can be locked into the four openings on the outer ring of the adjustable pressure plate 8 to fix one end of the locking plate 6. The other end of the locking plate 6 is pressed against the flange mounting plate.

[0066] An adjustable clamping plate 8 is provided on the upper part of the base 1 of the fixture. The adjustable clamping plate 8 is threadedly connected to the central screw 12. The outer ring of the adjustable clamping plate 8 is provided with two clamping plate handles 9 and four openings. The four openings are formed by recessing from the outer ring of the adjustable clamping plate 8 inward. The openings cooperate with the locking plate 6 mentioned above. After the locking plate 6 is rotated inward, one end of it can be inserted into the opening.

[0067] A clamping force distributor 10 is provided on the top of the adjustable clamping disc 8, and the clamping force distributor 10 is fitted on the central screw 12; the top of the clamping force distributor 10 is a clamping nut 11, and a clamping nut handle 13 is provided on the clamping nut 11; by rotating the clamping nut handle 13, the clamping nut 11 can be rotated, thereby pressing the clamping force distributor 10 downward, and the adjustable clamping disc 8 can be clamped by the clamping force distributor 10;

[0068] The aforementioned central screw 12 is sequentially connected to the clamping nut 11, the clamping force distributor 10, the adjustable clamping plate 8, and the fixture base 1, connecting the entire device together to form a whole.

[0069] Based on the above-described apparatus, the present invention describes a specific assembly welding process, the purpose of which is to achieve the following: Figure 3 The flange shown is installed Figure 9The specific installation steps for the flange mounting plate shown are as follows:

[0070] Step 1: Tooling and Equipment. Move the tooling to the work area, such as... Figure 4 As shown;

[0071] Step 2 involves inserting the four eye bolts 3 into the third set of holes in the fixture base 1. These third set of holes are threaded holes. The four eye bolts 3 are inserted into the four threaded holes in the third set. The ends of the eye bolts 3 are then rotated until they are flush with the bottom of the fixture base 1. A detailed diagram is shown below. Figure 5 As shown;

[0072] Step 3: Use an overhead crane to lift the positioning jig onto the flange, lower it to a distance of approximately 3-5 mm from the flange surface, and suspend it. Adjust it so that the threaded holes align with the threaded holes on the flange. Lower it onto the flange surface, rotate the four lifting eye bolts (3) until they reach the bottom of the flange threaded holes, and tighten them symmetrically. This completes the initial connection between the positioning jig and the flange; see the detailed diagram below. Figure 6 , Figure 7 As shown;

[0073] Step 4: Screw in four more connecting bolts and tighten them symmetrically. This completes the further connection between the positioning jig and the flange. See details below. Figure 8 As shown;

[0074] Step 5: According to the flange and mounting plate height dimensions in the drawing, pre-adjust the adjusting screw 4. Using these four points as support points, lower the screw onto the mounting plate surface. See details. Figure 10 As shown;

[0075] Step 6: Insert the adjustable clamping disc 8 into the central screw 12 and lower it onto the surface of the fixture base 1. See details. Figure 11 As shown;

[0076] Step 7: Rotate the clamping plate handle 9 to roughly align the upper opening of the adjustable clamping plate 8 with the locking plate 6 at the bottom of the fixture base 1. See details. Figure 12 As shown;

[0077] Step 8: Rotate the four locking plates 6 inward around the rotating shaft 7 until the locking plates 6 enter the opening of the adjustable clamping plate 8. See details. Figure 13 , Figure 14 As shown;

[0078] Step 9: While rotating the locking plate 6, raise the adjustable clamping plate 8 above the top corner of the locking plate 6. Then, using the center screw 12 as the axis, rotate the clamping plate handle 9 to rotate the adjustable clamping plate 8 45 degrees. See details. Figure 15 , Figure 16 As shown;

[0079] Step 10: Insert the clamping force distributor 10 onto the central screw 12, with its bottom resting on the surface of the adjustable clamping plate 8. See details. Figure 17 As shown;

[0080] Step 11: Screw the clamping nut 11 onto the center screw 12. See details. Figure 18 , Figure 19 As shown;

[0081] Step 12: Rotate the clamping nut handle 13 to press the adjustable clamping plate 8 downwards until the locking plate 6 completely locks the flange mounting plate. See details. Figure 20 As shown;

[0082] Step 13 Welding - can be performed in two ways.

[0083] (1) The flange and the mounting plate are symmetrically tack welded, and then welded after the tooling is removed (not used for applications with high behavioral tolerance requirements);

[0084] (2) Perform symmetrical tack welding between the flange and the mounting plate, and then perform most of the welding; (see details) Figure 21 , Figure 22 As shown;

[0085] Step 14: Rotate the clamping nut handle 13 to loosen the clamping nut 11. Rotate the adjustable clamping plate 8 45 degrees until the opening aligns with the groove on the fixture base 1. Under the influence of gravity and eccentricity, the locking plate 6 will naturally rotate to a perpendicular position to the fixture base. See details. Figure 23 , Figure 24 As shown;

[0086] Step 15: Remove the four connecting bolts 2, rotate the four eye bolts 3 until the threads are disengaged from the flange, and only connect to the jig base 1. See details. Figure 25 As shown;

[0087] Step 16: Use an overhead crane to lift the positioning jig off the flange and complete the final welding.

[0088] Step 17: Once the flange assembly is successful, fix it in place using positioning welding.

[0089] Step 18: Turn the knob to connect the bolts, remove the tooling, and the flange assembly is complete.

[0090] Using this method, various types of flanges can be assembled sequentially, which is both safe and saves time on the overhead crane. It is highly safe and efficient, and this tooling solution has been successfully applied to diesel engines and other similar structural components.

[0091] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An embedded flange quick positioning fixture, characterized in that: Includes fixture base, connecting bolts, eye bolts, adjusting screws, locking plate, adjustable clamping plate, clamping force distributor, clamping nut and center screw; Along the circumference of the fixture base, connecting bolts, eye bolts, and adjusting screws are connected thereon; a through groove is provided along the radial direction of the fixture base; a central screw is provided at the center of the fixture base; and an adjustable clamping plate is provided on the upper part of the fixture base, which is fitted onto the central screw. The outer ring of the adjustable clamping plate has an opening, and one end of the locking plate can be inserted into the opening after it is rotated inward; a clamping force distributor is provided on the top of the adjustable clamping plate, and the top of the clamping force distributor is a clamping nut, and both the clamping nut and the clamping force distributor cooperate with the central screw. The locking plate is connected to the fixture base via a rotating support.

2. The embedded flange quick positioning fixture as described in claim 1, characterized in that, The fixture base is a disc-shaped structure, including an outer annular disc and an inner annular disc. The outer annular disc and the inner annular disc are connected by two vertical connecting plates, and the through grooves are provided on the two vertical connecting rods.

3. The embedded flange quick positioning fixture as described in claim 2, characterized in that, The connecting plate extends to the outer ring of the annular outer disk, and a first threaded hole that mates with the adjusting screw is provided at the end of the connecting plate.

4. The embedded flange quick positioning fixture as described in claim 2, characterized in that, A second threaded hole that mates with the connecting bolt and a third threaded hole that mates with the lifting eye bolt are provided on the annular outer plate.

5. The embedded flange quick positioning fixture as described in claim 4, characterized in that, The second and third threaded holes are distributed alternately.

6. The embedded flange quick positioning fixture as described in claim 1, characterized in that, tightening screw The mother is equipped with a clamping nut handle.

7. The embedded flange quick positioning fixture as described in claim 1, characterized in that, Two clamping disc handles are installed on the outer ring of the clamping disc.

8. The embedded flange quick positioning fixture as described in claim 1, characterized in that, The number of openings on the outer ring of the adjustable clamping plate is equal to the number of openings on the locking plate.

9. The method for assembling and welding flanges using the embedded flange quick positioning fixture as described in any one of claims 1-8, characterized in that, as follows; Step 1: Move the tooling to the work area; Step 2: Insert the eye bolt into the fixture base and rotate the end of the eye bolt until it is flush with the bottom of the fixture base; Step 3: Hoist the positioning jig onto the flange, lower it to a set distance from the flange surface and stop, adjust the positioning jig to align with the flange, lower it onto the flange surface, and rotate the lifting eye bolts to achieve the initial connection between the positioning jig and the flange; Step 4: Screw in the connecting bolts to connect the fixture base to the flange; Step 5: According to the height dimensions of the flange and mounting plate in the drawing, pre-adjust the adjusting screws, using the adjusting screws as support points, and lower them onto the surface of the flange mounting plate; Step 6: Insert the adjustable clamping disc into the central screw and lower it onto the surface of the fixture base; Step 7: Align the opening on the adjustable clamping plate with the locking plate at the bottom of the fixture base. Step 8: Rotate the locking plate inward until the locking plate enters the opening of the adjustable clamping plate; Step 9: While rotating the locking plate, raise the adjustable clamping plate above the top corner of the locking plate, and then rotate the adjustable clamping plate 45 degrees around the center screw. Step 10: Insert the clamping force distributor onto the central screw, and let the bottom rest on the surface of the adjustable clamping plate; Step 11: Screw the clamping nut onto the center screw; Step 12: Rotate the clamping nut handle to press the adjustable clamping plate downwards until the locking plate completely locks the flange mounting plate. Step 13: Weld the flange and flange mounting plate; Step 14: Loosen the clamping nut and rotate the adjustable clamping plate until the opening is aligned with the initial position of the locking plate. Under the influence of gravity and eccentricity, the locking plate will naturally rotate to a position perpendicular to the base of the fixture. Step 1: Remove the connecting bolts, rotate the eye bolts until the threads are disengaged from the flange, and only connect to the jig base; Step 16: Lift the positioning jig away from the flange to complete the final welding.

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