Miniature drainage cover suitable for multi-scene application

Abstract

The utility model relates to the technical field of underwater welding equipment, in particular to a miniature drainage cover suitable for multi-scene application, which comprises a drainage cover base body, a welding torch swing mechanism, a water retaining mechanism and a plurality of air inlet pipes. The water retaining mechanism is installed on the lower side of the drainage cover base body through a plurality of screws, the water retaining mechanism and the drainage cover base body form a closed space, the welding torch is installed on the welding torch swing mechanism and penetrates into the closed space, the welding torch swing mechanism can be driven to swing around the swing center when the welding torch swings, and the water retaining mechanism can be compressed and folded. The water retaining device can be applied to different welding scenes such as underwater flat welding, underwater fillet welding and underwater curved surface welding, the water retaining cover does not need to be replaced when the application scene is replaced, time and labor are saved, deformation is adjusted through the compressible and foldable water retaining mechanism, multi-scene welding is achieved, the overall structure is simple, and economical and practical effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater welding equipment, and in particular to a micro drainage cover suitable for multiple scenarios. Background Art

[0002] At present, in the field of underwater welding, there are mainly three underwater welding methods, namely: wet welding, dry welding, and local dry welding. Wet welding is affected by the depth of water, the welding arc is unstable, and the welding quality is poor; dry welding requires the use of complex pressure vessels, which is very expensive. Local dry welding technology overcomes the above shortcomings and has the advantages of good welding effect and low cost; the core technology of local dry welding technology is to use specific devices or methods to form a relatively dry welding environment in the weld and its surrounding areas. Generally, drainage gas is introduced into a specific gas hood to drain the water in the welding area. This equipment is referred to as a drainage hood.

[0003] The bottom surface of the existing drainage hood is often flat, which is suitable for submarine platforms but not for submarine pipelines, and cannot be used for underwater corner welding. The water shield of the drainage hood needs to be replaced before corner welding can be performed. Moreover, the rotation axis of the welding torch and the drainage hood coincide, and the drainage hood is installed on the outside of the welding torch. After installation, it cannot move inside the drainage hood. Therefore, the drainage hood is only suitable for underwater flat welding and cannot be used for underwater curved surface welding. At the same time, when performing underwater corner welding, it is necessary to replace the water shield that has been pre-processed into a V shape, which limits the use environment of a single drainage hood and cannot be used in multiple scenarios. Therefore, in order to improve the deficiencies of the above-mentioned existing technology, it is necessary to propose an improvement to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art and provide a micro drainage cover suitable for multiple scenarios.

[0005] The technical solution of the utility model is:

[0006] A micro drainage hood suitable for multi-scenario applications includes a drainage hood base, a welding torch swinging mechanism, a water retaining mechanism and multiple air inlet pipes. The welding torch swinging mechanism is detachably arranged on the drainage hood base, and the water retaining mechanism is detachably arranged on the lower side of the drainage hood base and the two form a closed space. The welding torch is installed on the welding torch swinging mechanism and penetrates into the closed space. When the welding torch swings, it can drive the welding torch swinging mechanism to swing around its swing center. The water retaining mechanism can be compressed and folded. The bottom of the water retaining mechanism is a deformable soft bottom and is in adsorption contact with the workpiece to be welded. One end of the multiple air inlet pipes is detachably arranged on the drainage hood base, and the other end of the multiple air inlet pipes is connected to an external gas source for gas to be introduced.

[0007] In order to reduce the number of times the welding gun and the drain cover are moved during welding so that the welding torch can swing in a small range inside the drain cover, the welding torch swinging mechanism includes a rotating body, a rotating body cover, a mounting cover and multiple springs. The rotating body cover is detachably arranged above the drain cover base, and the rotating body is detachably arranged between the rotating body cover and the drain cover base. The welding torch is installed on the mounting cover, and the lower part passes through the rotating body into the enclosed space. Multiple springs are arranged between the mounting cover and the rotating body cover. The swing of the welding torch drives the rotating body to swing around its swing center.

[0008] In order to be applied to a variety of different welding scenarios, the water-blocking mechanism includes a water-blocking cover, a deformable cover substrate, a deformable cover, a soft bottom plate and multiple adsorption parts. The water-blocking cover is detachably arranged under the drainage cover base, and the two sides of the lower part of the water-blocking cover are cut into a V shape. The deformable cover is detachably arranged on the water-blocking cover through the deformable cover substrate. A plurality of supporting ribs are arranged at intervals on the deformable cover, and the deformable covers between the multiple supporting ribs can be folded. A deformable soft bottom plate is installed at the bottom of the deformable cover, and multiple adsorption parts can be detachably arranged on the soft bottom plate.

[0009] In order to facilitate drainage and realize compression and folding of the water retaining mechanism, a drainage port is opened at the position where the bottom of the V-shaped cutout and the bottom of the deformation cover coincide. Both the water retaining cover and the deformation cover are made of flexible high-temperature resistant composite materials.

[0010] In order to facilitate adsorption and separation, the adsorption part includes a soft magnetic patch and a permanent magnet, and the soft magnetic patch is a long strip structure.

[0011] In order to increase the swing range of the welding torch, an inverted conical hole for increasing the swing range of the welding torch is provided on the rotor cover.

[0012] The utility model adopts the above structure and has the following advantages:

[0013] 1. It can be applied to different welding scenarios such as underwater flat welding, underwater fillet welding, underwater curved surface welding, etc. There is no need to replace the water shield when changing the application scenario, which saves time and effort. The compressible and foldable water shield mechanism is used to adjust the deformation to achieve multi-scenario welding. The overall structure is simple, economical and practical.

[0014] 2. The deformation of the deformation cover can be applied to various welding scenarios. During flat welding and curved surface welding, the soft magnetic patch and the permanent magnet are adsorbed on the welding surface, and the deformation cover is extended. During fillet welding, the permanent magnet and the soft magnetic patch in the drainage cover are adsorbed on the vertical surface to be fillet welded, and the deformation cover is compressed. It is simple to operate and has strong practicality.

[0015] 3. The welding torch can swing in a small range inside the drain cover, which reduces the number of movements of the welding torch and the drain cover during welding and increases the welding stroke after a single movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure when welding underwater flat plates;

[0019] Figure 4 It is a structural diagram for underwater fillet welding;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure when performing straight weld bead welding on the outer curved surface;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure when welding the outer curved surface;

[0022] Figure 7 Schematic diagram of the connection structure when performing inner surface welding.

[0023] In the figure, 1. rotating body; 2. rotating body cover; 3. drainage cover base; 4. air inlet pipe; 5. water retaining cover; 6. deformation cover base plate; 7. deformation cover; 8. soft magnetic patch; 9. permanent magnet; 10. soft bottom plate; 11. supporting ribs; 12. drainage outlet; 13. welding torch; 14. spring; 15. mounting cover; 16. flat surface to be welded; 17. fillet weld to be welded; 18. outer curved surface straight line to be welded; 19. outer curved surface curved line to be welded; 20. inner curved surface to be welded. DETAILED DESCRIPTION

[0024] In order to make the technical means, technical features, purpose of the utility model and technical effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0025] like Figure 1 and Figure 2 As shown, a miniature drainage cover suitable for multi-scenario applications includes a drainage cover base 3, a welding torch swinging mechanism, a water retaining mechanism and multiple air inlet pipes 4. The welding torch swinging mechanism is installed on the drainage cover base 3 through a thread, and the water retaining mechanism is installed on the lower side of the drainage cover base 3 through a plurality of screws and the two form a closed space. The welding torch 13 is installed on the welding torch swinging mechanism and penetrates into the closed space. When the welding torch 13 swings, it can drive the welding torch swinging mechanism to swing around its swing center. The water retaining mechanism can be compressed and folded. The bottom of the water retaining mechanism is a deformable soft bottom and is in adsorption contact with the workpiece to be welded. One end of the four air inlet pipes 4 is installed on the drainage cover base 3 through a threaded circumference. The other end of the four air inlet pipes 4 is connected to an external gas source and can pass in gas for drainage.

[0026] The welding torch swing mechanism includes a rotor 1, a rotor cover 2, a mounting cover 15, and four springs 14. The rotor cover 2 is screwed onto the drain cover base 3 by a thread. The rotor 1 is located between the rotor cover 2 and the drain cover base 3. The rotor 1 can move freely between the rotor cover 2 and the drain cover base 3 and has three degrees of freedom. The rotor cover 2 is processed with an inverted conical hole for increasing the swing range of the welding torch 13. The welding torch 13 is mounted on the mounting cover 15, and the lower part passes through the rotor 1 to enter the enclosed space. The four springs 14 are hung between the mounting cover 15 and the rotor cover 2. The swing of the welding torch 13 drives the rotor 1 to swing around its swing center.

[0027] The water retaining mechanism includes a water retaining cover 5, a deformable cover substrate 6, a deformable cover 7, a soft bottom plate 10 and a plurality of adsorption parts. The water retaining cover 5 is connected to the bottom of the drainage cover base 3 by a thread. The two sides of the lower part of the water retaining cover 5 are cut into a V shape. The deformable cover substrate 6 installs the flange part of the deformable cover 7 on the water retaining cover 5 by screws. The water retaining cover 5 is located at the position where the bottom of the V-shaped cutout and the bottom of the deformable cover 7 coincide with each other. A drain port 12 is opened. The water retaining cover 5 and the deformable cover 7 are both made of flexible and high-temperature resistant composite materials. A plurality of supporting ribs 11 are arranged at intervals on the deformable cover 7. The deformable cover 7 between the plurality of supporting ribs 11 can be folded. A deformable soft bottom plate 10 is installed at the bottom of the deformable cover 7. The adsorption part is installed on the soft bottom plate 10. The adsorption part includes a soft magnetic patch 8 and a permanent magnet 9. The soft magnetic patch 8 is a long strip structure. The soft magnetic patch 8 can be attached to the surface of the surface to be welded, thereby driving the soft bottom plate 10 to deform, and the permanent magnet 9 is used to strengthen the adsorption force;

[0028] Working principle:

[0029] Preparation process: The welding torch 13 is connected to an actuator, and the welding torch 13 is installed on the mounting cover 15. The actuator moves the welding torch 13 to the part to be welded. The soft bottom plate 10 contacts the surface to be welded, and the soft magnetic patch 8 deforms, driving the soft bottom plate 10 to deform and adsorb on the surface of the part to be welded. The permanent magnet 9 adsorbs at the same time to increase the adsorption force. The initial state of the deformation cover 7 on both sides is in the same plane as the bottom surface of the soft bottom plate 10, and the two sides form an angle of 180 degrees.

[0030] Next, distinguish the conditions of the surface to be welded: The working scenarios of the drain cover are mainly divided into three situations. If the surfaces to be welded adsorbed by the deformable covers 7 on both sides of the drain cover are on the same plane, then the soft base plate 10 and the deformable covers 7 will not deform. If the surfaces to be welded adsorbed by the drain cover are planes at an angle to each other, then the soft base plate 10 will not deform, but the deformable covers 7 will deform, and the part between the support ribs 11 on the deformable covers 7 will be folded. If the surface to be welded is a curved surface, then the soft base plate 10 and the deformable covers 7 will also deform.

[0031] Start welding: when the deformation cover 7 is adsorbed, the gas for drainage is introduced through the air inlet pipe 4 to drain the inside of the drainage cover. The drainage gas discharges the water inside the drainage cover through the drainage port 12 at the bottom of the water retaining cover 5. After the drainage is completed and the welding condition is met, the welding torch 13 is used for welding. After the drainage cover is fixed and drained, the drainage cover can be directly kept unchanged and welding can be carried out by swinging the welding torch 13. When the weld seam inside the drainage cover is completed, the drainage cover can be moved to the next place for welding. The welding torch 13 and the drainage cover can also be directly moved to the next place to be welded together after the welding of the current welding point is completed, and the welding torch 13 does not swing relative to the drainage cover. The welding torch 13 can also be directly swung to aim at the next place to be welded for welding. The swing of the welding torch 13 relative to the drainage cover is realized by the welding torch swing mechanism. When the welding torch 13 swings, it will drive the rotating body 1 to swing around its swing center, and the four springs 14 will be deformed at the same time.

[0032] The following figures specifically analyze several different application scenarios:

[0033] like Figure 3 As shown, at this time, the workpiece to be welded is a planar workpiece 16, the surface to be welded is a plane, the welding torch 13 performs linear welding, the welding torch 13 does not swing, the deformation cover 7 does not deform, and the soft magnetic sticker 8 drives the soft base plate 10 to be adsorbed on the plane to be welded under the action of magnetic force;

[0034] like Figure 3 As shown, at this time, the part to be welded is a fillet weld part 17, the surface to be welded is a vertical intersection, the welding is a fillet weld, the soft bottom plate 10 at the bottom of the deformation cover 7 remains in a flat state without deformation, and the two sides are respectively adsorbed on the two intersection surfaces of the plane to be welded; the deformation cover 7 is deformed, the deformation cover 7 between the support ribs 11 is folded, and the bottom surfaces of the deformation cover 7 on both sides of the water retaining cover 5 form a 90° angle;

[0035] like Figure 5 As shown, at this time, the workpiece to be welded is an outer curved linear workpiece 18, the workpiece to be welded is an outer curved surface, the welding torch 13 performs linear welding, the welding torch 13 does not swing, the drainage cover works on the outer curved surface, the spring 14 extends, the welding torch 13 moves upward relative to the rotating body 1, the deformation cover 7 is deformed, the deformation cover 7 is slightly compressed, the soft magnetic patch 8 is deformed under the action of the magnetic force, and at the same time drives the soft bottom plate 10 to deform and adsorb on the curved surface to be welded, and the magnetic force between the soft magnetic patch 8 and the workpiece to be welded drives the soft bottom plate 10 to deform;

[0036] like Figure 6As shown, at this time, the workpiece to be welded is an outer curved surface workpiece 19, and the workpiece to be welded is an outer curved surface. The welding torch 13 performs curved welding, and the welding torch 13 swings relative to the drainage cover. After a single movement of the drainage cover, the welding length of the welding torch 13 increases, the spring 14 stretches and deforms, and the welding torch 13 moves upward relative to the rotating body 1. The drainage cover works on the outer curved surface, and the deformation cover 7 is deformed. The soft magnetic patch 8 is deformed under the action of the magnetic force. The magnetic force between the soft magnetic patch 8 and the workpiece to be welded simultaneously drives the soft bottom plate 10 to deform and adsorb on the curved surface to be welded.

[0037] like Figure 7 As shown, at this time, the workpiece to be welded is an inner curved surface workpiece 20, the workpiece to be welded is an inner curved surface, the welding torch 13 performs linear welding, the welding torch 13 does not swing, the drainage cover works on the inner curved surface, the deformation cover 7 is deformed, wherein the soft magnetic patch 8 is deformed under the action of magnetic force, and the magnetic force between the soft magnetic patch 8 and the workpiece to be welded simultaneously drives the soft bottom plate 10 to deform and adsorb on the curved surface to be welded, the spring 14 does not undergo significant deformation, and the relative position between the welding torch 13 and the rotating body 1 does not change.

[0038] It should be noted that the above-mentioned soft magnetic patch 8, permanent magnet 9, welding torch 13, spring 14, screws, threaded connection, gas source and actuator are all applications of existing technologies.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. In other words, any equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the technical scope of the present invention.

Claims

1. A micro drainage cover suitable for multiple scenarios, characterized by: The invention comprises a drainage cover base (3), a welding torch swing mechanism, a water retaining mechanism and a plurality of air inlet pipes (4), wherein the welding torch swing mechanism is detachably arranged on the drainage cover base (3), the water retaining mechanism is detachably arranged on the lower side of the drainage cover base (3) and the two form a closed space, the welding torch (13) is mounted on the welding torch swing mechanism and penetrates into the closed space, and when the welding torch (13) swings, it can drive the welding torch swing mechanism to swing around its swing center, the water retaining mechanism can be compressed and folded, and the bottom of the water retaining mechanism is a deformable soft bottom and is in adsorption contact with the workpiece to be welded, one end of the plurality of air inlet pipes (4) is detachably arranged on the drainage cover base (3), and the other end of the plurality of air inlet pipes (4) is connected to an external gas source for gas to be introduced.

2. The micro drainage cover suitable for multi-scenario applications according to claim 1, characterized in that: The welding torch swing mechanism comprises a rotating body (1), a rotating body cover (2), a mounting cover (15) and a plurality of springs (14); the rotating body cover (2) is detachably arranged above a drainage cover base (3); the rotating body (1) is detachably arranged between the rotating body cover (2) and the drainage cover base (3); the welding torch (13) is mounted on the mounting cover (15), and its lower portion passes through the rotating body (1) and enters the interior of the enclosed space; the plurality of springs (14) are arranged between the mounting cover (15) and the rotating body cover (2); the swing of the welding torch (13) drives the rotating body (1) to swing around its swing center.

3. The micro drainage cover suitable for multi-scenario applications according to claim 2, characterized in that: The water retaining mechanism comprises a water retaining cover (5), a deformable cover base plate (6), a deformable cover (7), a soft bottom plate (10) and a plurality of adsorption members, wherein the water retaining cover (5) is detachably arranged below the drainage cover base body (3), and the lower sides of the water retaining cover (5) are cut into a V shape, and the deformable cover (7) is detachably arranged on the water retaining cover (5) through the deformable cover base plate (6), and a plurality of support ribs (11) are arranged on the deformable cover (7) at intervals, and the deformable cover (7) between the plurality of support ribs (11) can be folded, and a deformable soft bottom plate (10) is installed at the bottom of the deformable cover (7), and the plurality of adsorption members can be detachably arranged on the soft bottom plate (10).

4. The micro drainage cover suitable for multi-scenario applications according to claim 3, characterized in that: The water retaining cover (5) is provided with a drainage port (12) at a position where the bottom of the V-shaped cutout and the bottom of the deformation cover (7) overlap. Both the water retaining cover (5) and the deformation cover (7) are made of a flexible, high-temperature-resistant composite material.

5. The micro drainage cover suitable for multi-scenario applications according to claim 4, characterized in that: The adsorption member comprises a soft magnetic patch (8) and a permanent magnet (9), and the soft magnetic patch (8) is a long strip structure.

6. The micro drainage cover suitable for multi-scenario applications according to claim 5, characterized in that: The rotating body cover (2) is provided with an inverted conical hole for increasing the swing range of the welding torch (13).

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