Multidirectional air inlet underwater welding miniature drainage cover

Abstract

The utility model relates to the technical field of underwater welding equipment, in particular to a multi-direction air inlet underwater welding miniature drainage cover which comprises a drainage cover base body, a welding gun installation mechanism, a water retaining mechanism and a plurality of ball head air inlet mechanisms, the water retaining mechanism is detachably arranged on the lower side of the drainage cover base body, and a closed space is formed by the water retaining mechanism and the drainage cover base body. The welding gun installation mechanism is detachably installed in the closed space, one ends of the multiple ball head air inlet mechanisms are rotatably installed on the lower side of the interior of the drainage cover base body, and the other ends of the multiple ball head air inlet mechanisms penetrate out of the drainage cover base body. The gas inlet modes are diversified, gas is fed in different directions of the top, the tangential direction and the radial direction, multidirectional gas feeding is achieved by adjusting the posture of the ball head gas inlet mechanism, rapid water drainage can be achieved while the problems that a water drainage cover is not high in applicability and the gas inlet modes are fixed are solved, and the water drainage device is suitable for various welding guns and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater welding equipment, in particular to a multi-directional air intake underwater welding micro drainage cover. Background Art

[0002] In recent years, with the vigorous development of my country's marine industry, the rapid development of the national economy and the urgent requirements of energy strategy, a large number of marine engineering construction and maintenance require underwater welding operations, and the application of underwater welding operations is becoming more and more extensive.

[0003] Underwater welding is a common welding technique, the most common of which is the localized dry welding method. Localized dry welding relies on a drain hood to allow air to displace water, thereby protecting the arc and weld. Therefore, the proper design of the drain hood is crucial for this method. Current localized dry welding techniques utilize micro-drain hoods designed specifically for a specific welding gun model. Redesigning the hood for different gun models is expensive, and the fixed air intake of the micro-drain hoods results in poor drainage, reducing weld quality.

[0004] Chinese invention patent application number 201710047791.7 discloses a dual-airflow structure for a local dry underwater robot welding micro-drain cover. The patent's technical solution uses tangential spiral air intake, which has good drainage effect and good drainage protection during continuous welding. However, the air intake direction is single, which cannot quickly drain water and can only be applied to a specific welding gun model.

[0005] Chinese invention patent application number 201310362777.8 discloses a portable micro-drain cover for underwater localized dry automatic welding. This patent's technical solution, equipped with a camera, can be used in turbid underwater environments. However, it only uses a top-mounted air intake system for drainage. This single air intake method consumes a large amount of drainage gas during continuous welding, resulting in low efficiency. Therefore, to address the shortcomings of the existing technology, it is necessary to propose an improvement to overcome these drawbacks. Utility Model Content

[0006] The purpose of the utility model is to solve the problems in the prior art and provide a multi-directional air intake underwater welding micro drainage cover.

[0007] The technical solution of the utility model is:

[0008] The application discloses a multi-direction air inlet underwater welding micro-drainage cover which comprises a drainage cover base body, a welding gun mounting mechanism, a water blocking mechanism and a plurality of ball head air inlet mechanisms.

[0009] In order to increase the overall applicability, the drainage cover base body comprises a drainage cover upper shell, an electromagnetic moving device and a plurality of electromagnets, the drainage cover upper shell is internally provided with a track for allowing the ball head air inlet mechanism to rotate and a spherical groove for mounting the ball head air inlet mechanism, the ball head air inlet mechanism is detachably connected with the drainage cover base body through longitudinal fixing bolts and a plurality of transverse fixing bolts, and the electromagnetic moving device and the plurality of electromagnets are mounted on the track and are used for connecting the ball head air inlet mechanism.

[0010] In order to improve the inherent fixed air inlet mode, the ball head air inlet mechanism comprises an air inlet ball, an air inlet pipe and an air inlet pipe nested iron cylinder, the air inlet ball is detachably connected at the top end of the air inlet pipe, the air inlet pipe nested iron cylinder is sleeved at the outer periphery of the tail end of the air inlet pipe, the ball head of the air inlet ball is rotatably clamped in the spherical groove, the air inlet pipe is internally provided with a pipe cavity one, and the air inlet ball is internally provided with a pipe cavity two, the pipe cavity one and the pipe cavity two are communicated and concentric.

[0011] In order to be suitable for mounting various welding guns, the welding gun mounting mechanism comprises a welding gun mounting cylinder, a welding gun pressing mechanism and a welding gun sealing cover, the welding gun sealing cover is detachably connected at the top of the welding gun mounting cylinder, the welding gun sealing cover is detachably connected at the upper side of the drainage cover upper shell, the welding gun sealing cover is detachably connected with the welding gun, the welding gun pressing mechanism is located at the outer periphery of the welding gun mounting cylinder, and the welding gun pressing mechanism is used for pressing the welding gun mounted in the welding gun mounting cylinder.

[0012] In order to guarantee sealing and drainage during welding, the water blocking mechanism comprises a water blocking cover and a sealing ring, the sealing ring is detachably mounted below the water blocking cover, and two drainage holes distributed at 180 degrees are arranged at the two sides of the sealing ring.

[0013] In order to be capable of adjusting the posture of the ball head air inlet mechanism and realizing multi-direction air inlet, the number of the ball head air inlet mechanisms is four, and the angle between each ball head air inlet mechanism is 90 degrees, the track, the longitudinal fixing bolt and the transverse fixing bolt are arranged on the drainage cover base body, and the drainage cover base body is provided with a mounting hole for mounting the welding gun mounting mechanism.

[0014] In order to realize three-direction air inlet, the number of the electromagnets is three, and the three electromagnets are respectively a top air inlet electromagnet, a radial air inlet electromagnet and a tangential air inlet electromagnet, and the track is provided with a track baffle.

[0015] In order to be able to compress the welding gun and provide the welding gun with inward compression force, the welding gun compression mechanism comprises a compression spring and a plurality of welding gun compression blocks, a plurality of sliding grooves are arranged axially on the barrel wall of the welding gun mounting barrel, the plurality of welding gun compression blocks are correspondingly slidably mounted in the sliding grooves, and the compression spring is detachably arranged around the periphery of the plurality of welding gun compression blocks.

[0016] The utility model adopts above -mentioned structure, has following merit:

[0017] 1. The air inlet mode is various, and air is inhaled from different directions of top, tangential and radial, multi -directional air inlet is realized through adjusting the attitude of the ball head air inlet mechanism, the problems of poor applicability of the drain cover and fixed air inlet mode are solved, and rapid drainage can be realized;

[0018] 2. It is suitable for a variety of welding guns, and the drain cover is suitable for a variety of welding guns by replacing the welding gun sealing cover of different inner diameters, and the application range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is the three-dimensional structure schematic diagram of the drain cover base body;

[0021] Figure 3 It is the three-dimensional structure schematic diagram of the ball head air inlet mechanism;

[0022] Figure 4 It is the three-dimensional structure schematic diagram of the welding gun mounting mechanism;

[0023] Figure 5 It is the three-dimensional structure schematic diagram of the water retaining mechanism;

[0024] Figure 6 It is the connecting structure schematic diagram of the drain cover base body and ball head air inlet structure when radial air inlet;

[0025] Figure 7 It is the connecting structure schematic diagram of the drain cover base body and ball head air inlet structure when tangential air inlet;

[0026] Figure 8 It is the connecting structure schematic diagram of the drain cover base body and ball head air inlet structure when top air inlet;

[0027] Figure 9 It is the bottom structure schematic diagram when radial air inlet.

[0028] In the figure, 1, drain cover base body; 11, drain cover upper shell; 12, top air inlet electromagnet; 13, radial air inlet electromagnet; 14, tangential air inlet electromagnet; 15, longitudinal fixing bolt; 16, transverse fixing bolt; 17, sealing ring; 18, track baffle; 19, electromagnetic moving device; 2, ball head air inlet mechanism; 21, air inlet ball; 22, air inlet pipe; 23, air inlet pipe nesting iron cylinder; 3, welding gun mounting mechanism; 31, welding gun mounting cylinder; 32, welding gun pressing block; 33, pressing spring; 34, welding gun sealing cover; 4, water blocking mechanism; 41, water blocking cover; 42, sealing ring; 5, welding gun. DETAILED DESCRIPTION

[0029] In order to make the technical means, technical features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0030] As shown in Figure 1 , a multi-direction air inlet underwater welding micro drain cover includes a drain cover base body 1, a welding gun mounting mechanism 3, a water blocking mechanism 4, and four ball head air inlet mechanisms 2. The angle between each ball head air inlet mechanism 2 is 90°. The water blocking mechanism 4 is connected to the lower side of the drain cover base body 1 by screws and the two constitute a closed space. A sealing ring 17 is installed between the water blocking mechanism 4 and the drain cover base body 1 for sealing. The welding gun mounting mechanism 3 is installed in the closed space by screws. One end of each ball head air inlet mechanism 2 is rotatably installed on the lower side inside the drain cover base body 1. The other end of each ball head air inlet mechanism 2 penetrates out of the drain cover base body 1. The ball head air inlet mechanism 2 has multiple air inlet modes, including air inlet from top to bottom along the generatrix direction of the drain cover base body 1 (top air inlet), air inlet from outside to inside along the radial direction of the drain cover base body 1 (radial air inlet), and air inlet from outside to inside along the tangent parallel direction of the drain cover base body 1 (tangential air inlet).

[0031] As shown in Figure 2 , the drain cover base body 1 includes a drain cover upper shell 11, an electromagnetic moving device 19, and three electromagnets. The drain cover upper shell 11 is internally provided with a track for rotation of the ball head air inlet mechanism 2 and a spherical groove for installation of the ball head air inlet mechanism 2. The ball head air inlet mechanism 2 is connected to the drain cover base body 1 by longitudinal fixing bolts 15 and transverse fixing bolts 16. The electromagnetic moving device 19 and the three electromagnets are installed on the track and are used for connecting the ball head air inlet mechanism 2. The three electromagnets are a top air inlet electromagnet 12, a radial air inlet electromagnet 13, and a tangential air inlet electromagnet 14. The track, the longitudinal fixing bolts 15, and the transverse fixing bolts 16 are all installed on the drain cover base body 1.

[0032] As shown in Figure 3As shown, the ball head air inlet mechanism 2 includes an air inlet ball 21, an air inlet pipe 22 and an air inlet pipe nesting cylinder 23, the air inlet ball 21 is processed with a recess, the top end of the air inlet pipe 22 is screwed into the recess, the air inlet ball 21 is connected at the top end of the air inlet pipe 22 through threads, the air inlet pipe nesting cylinder 23 is cylindrical, the air inlet pipe nesting cylinder 23 is sleeved on the outer periphery of the end of the air inlet pipe 22, the air inlet ball 21 is rotatably clamped in the spherical groove, the inside of the air inlet pipe 22 is provided with a pipe cavity one, the inside of the air inlet ball 21 is provided with a pipe cavity two, the pipe cavity one and the pipe cavity two are communicated and concentric;

[0033] As shown, Figure 4 The welding gun mounting mechanism 3 includes a welding gun mounting cylinder 31, a welding gun pressing mechanism and a welding gun sealing cover 34, the welding gun pressing mechanism includes four welding gun pressing blocks 32 and a pressing spring 33, four sliding grooves are axially arranged on the cylinder wall of the welding gun mounting cylinder 31, the four welding gun pressing blocks 32 are correspondingly and slidably installed in the sliding grooves, a rounded corner is processed above the welding gun pressing block 32, the front and back surfaces are both arc surfaces, flanges are processed on both sides of the bottom of the welding gun pressing block 32 to realize directional sliding, the pressing spring 33 is installed around the periphery of the four welding gun pressing blocks 32 through screws, and inward pressing force is provided to the four welding gun pressing blocks 32 to press the welding gun 5;

[0034] The upper shell 11 of the drain cover is provided with a mounting hole for mounting the welding gun mounting mechanism 3, the top of the welding gun mounting cylinder 31 passes through the mounting hole and is connected with the welding gun sealing cover 34 through threads, several connecting ears are extended from the outer periphery of the welding gun sealing cover 34, the welding gun sealing cover 34 is connected to the upper side of the upper shell 11 of the drain cover through the connecting ears and bolts, a sealing gasket is additionally arranged in the welding gun sealing cover 34 for sealing, an internal thread is processed on the inner wall of the welding gun sealing cover 34 and is connected with the welding gun 5 through threads, the welding gun pressing mechanism is located on the periphery of the welding gun mounting cylinder 31, and the welding gun pressing mechanism is used to press the welding gun 5 mounted in the welding gun mounting cylinder 31, and various welding guns 5 are realized by using welding gun sealing covers 34 with different inner diameters, and welding gun sealing covers 34 with different specifications are adopted for different welding guns 5;

[0035] When the welding gun 5 extends into the welding gun mounting mechanism 3, the sealing gasket in the welding gun sealing cover 34 matched with the outer diameter of the welding gun 5 is contacted first, the sealing gasket is deformed to realize sealing; the welding gun 5 continues to extend to the position where the welding gun pressing block 32 is located, at this time, the welding gun 5 pushes away the welding gun pressing block 32, the pressing spring 33 is stretched to provide pressing force to the welding gun pressing block 32, the welding gun 5 is pressed, and the welding gun 5 is fixed in the drain cover base body 1;

[0036] As shown, Figure 5 The water blocking mechanism 4 includes a water blocking cover 41 and a sealing ring 42, the sealing ring 42 is detachably installed below the water blocking cover 41, two drainage holes for drainage are arranged on both sides of the sealing ring 42 and are distributed at 180°;

[0037] In order to be able to compress the welding gun 5 and provide the welding gun compression block 32 with inward compression force, the welding gun compression mechanism comprises a plurality of compression springs 33 and a plurality of welding gun compression blocks 32, a plurality of grooves are arranged axially on the barrel wall of the welding gun mounting barrel 31, the bottom of the groove is provided with a guide rail, and the plurality of welding gun compression blocks 32 are correspondingly located in the grooves; and the plurality of compression springs 33 are detachably arranged around the periphery of the plurality of welding gun compression blocks 32.

[0038] The top air inlet electromagnet 12, the radial air inlet electromagnet 13 and the tangential air inlet electromagnet 14 are respectively installed at different positions of the track, a spherical groove for mounting the air inlet sphere 21 is processed below the track, three threaded holes are processed around the spherical groove, the three threaded holes are respectively used for mounting one longitudinal fixing bolt 15 and two transverse fixing bolts 16, the ends of the longitudinal fixing bolt 15 and the transverse fixing bolt 16 are tangent to the outer surface of the air inlet sphere 21, for limiting the movement freedom degree of the air inlet sphere 21 in the three directions of XYZ, and reserving the rotation freedom degree of the air inlet sphere 21 around the three axes of XYZ, the track baffle 18 is installed on the track for changing the radial air inlet to the tangential air inlet, the top air inlet electromagnet 12, the radial air inlet electromagnet 13 and the tangential air inlet electromagnet 14 are used for attracting the air inlet pipe nesting iron cylinder 23, so as to realize the fixation of the relative posture between the ball head air inlet mechanism 2 and the drainage cover base body 1, and the adjustment of the three postures of the ball head air inlet mechanism 2 is realized by the on-off of the plurality of electromagnetic moving devices 19 installed on the track.

[0039] The use steps and working principles are as follows:

[0040] S1 installation and fixation:

[0041] According to the welding gun 5 used in underwater welding, the welding gun sealing cover 34 corresponding to the size of the welding gun 5 is selected, after the welding gun 5 is installed, the welding gun sealing cover 34 is installed on the welding gun mounting barrel 31, at this time, the welding gun 5 extends into the inside of the welding gun mounting barrel 31, the welding gun compression block 32 compresses the welding gun 5 under the action of the compression spring 33, the assembled welding gun mounting mechanism 3 is installed on the upper shell 11 of the drainage cover through screws, the welding gun 5 is connected with the automatic welding equipment, and the end of the air inlet pipe 22 is connected with the gas source;

[0042] S2 rapid drainage:

[0043] The automatic welding equipment drives the welding gun 5 and the upper shell 11 of the drainage cover to contact the surface of the to-be-welded part, and the ball head air inlet mechanism 2 adopts the top air inlet mode to realize rapid drainage;

[0044] S3 continuous welding:

[0045] After the drainage is completed, the remote control personnel on the ground can control the air inlet mode according to different underwater environments, when the air inlet mode is switched, the electromagnet corresponding to the air inlet mode is powered off, the electromagnetic moving device 19 at the track is sequentially powered on and powered off, the air inlet pipe 22 is controlled to move through the electromagnetic moving device 19 at the track and the air inlet pipe nested iron cylinder 23, when the next posture is switched, the electromagnet of the posture is powered on, the ball head air inlet mechanism 2 is fixed, and the automatic welding equipment moves the welding gun 5 and the drainage cover base body 1 to repair;

[0046] As shown in Figure 6 and Figure 9 When the radial air inlet mode is adopted, the air inlet pipe nested iron cylinder 23 is adsorbed on the radial air inlet electromagnet 13, at this time, the air inlet pipe 22 inlets air along the radial direction of the drainage cover upper shell 11 from outside to inside, and the air inlet mode is strong in drainage performance around the welding gun 5;

[0047] As shown in Figure 7 When the tangential air inlet mode is adopted, the air inlet pipe nested iron cylinder 23 is adsorbed on the tangential air inlet electromagnet 14, at this time, the air inlet pipe 22 inlets air along the tangent parallel direction of the drainage cover upper shell 11 from outside to inside, and the air inlet mode can form a spiral air field inside the drainage cover base body 1 to realize the water isolation function when the drainage cover base body 1 moves with the welding gun 5;

[0048] As shown in Figure 8 When the top vertical air inlet mode is adopted, the air inlet pipe nested iron cylinder 23 is adsorbed on the top air inlet electromagnet 12, at this time, the air inlet pipe 22 inlets air along the generatrix direction of the drainage cover upper shell 11 from top to bottom, and the air inlet mode is fast in drainage speed;

[0049] The track of the drainage cover base body 1 penetrates the drainage cover base body 1 to realize the posture adjustment of the ball head air inlet mechanism 2, the air inlet ball 21 in the ball head air inlet mechanism 2 is installed in the spherical groove, and the air inlet ball 21 and the track baffle 18 jointly realize the water blocking function of the track; the switching of the three air inlet modes of the drainage cover is realized by the electromagnetic moving device 19 which is sequentially powered on and powered off.

[0050] The above is only the preferred embodiment of the present application, and is not used to limit the implementation range of the present application. Any equivalent changes and modifications made according to the content of the patent application scope of the present application shall belong to the technical scope of the present application.

Claims

1. A multi-directional air intake underwater welding micro-drainage cover, characterized by: The invention comprises a drain cover base (1), a welding gun mounting mechanism (3), a water retaining mechanism (4) and a plurality of ball head air intake mechanisms (2), wherein the water retaining mechanism (4) is detachably arranged on the lower side of the drain cover base (1) and the two form a closed space, the welding gun mounting mechanism (3) is detachably mounted in the closed space, one end of the plurality of ball head air intake mechanisms (2) is rotatably mounted on the lower side of the drain cover base (1), and the other end of the plurality of ball head air intake mechanisms (2) passes through the outside of the drain cover base (1), and the plurality of ball head air intake mechanisms (2) have multiple air intake modes, namely, air intake from top to bottom along the direction of the busbar of the drain cover base (1), air intake from outside to inside along the radial direction of the drain cover base (1), and air intake from outside to inside along the direction parallel to the tangent of the drain cover base (1).

2. The multi-directional air intake underwater welding micro-drainage cover according to claim 1, characterized in that: The drain cover base (1) comprises a drain cover upper shell (11), an electromagnetic moving device (19) and a plurality of electromagnets. A track for the ball head air intake mechanism (2) to rotate and a spherical groove for installing the ball head air intake mechanism (2) are provided inside the drain cover upper shell (11). The ball head air intake mechanism (2) is detachably connected to the drain cover base (1) via a longitudinal fixing bolt (15) and a plurality of transverse fixing bolts (16). The electromagnetic moving device (19) and the plurality of electromagnets are both installed on the track and are used to connect to the ball head air intake mechanism (2).

3. The multi-directional air intake underwater welding micro-drainage cover according to claim 2, characterized in that: The ball head air intake mechanism (2) comprises an air intake ball (21), an air intake pipe (22) and an air intake pipe nested iron cylinder (23), wherein the air intake ball (21) is detachably connected to one end of the air intake pipe (22), and the air intake pipe nested iron cylinder (23) is sleeved on the outer periphery of the other end of the air intake pipe (22), and the air intake ball (21) is rotatably mounted in the spherical groove, and a first airway cavity is provided inside the air intake pipe (22), and a second airway cavity is provided inside the air intake ball (21), and the first airway cavity and the second airway cavity are connected and concentric.

4. The multi-directional air intake underwater welding micro-drainage cover according to claim 3, characterized in that: The welding gun mounting mechanism (3) comprises a welding gun mounting barrel (31), a welding gun clamping mechanism and a welding gun sealing cover (34); the welding gun sealing cover (34) is detachably connected to the top of the welding gun mounting barrel (31); the welding gun sealing cover (34) is detachably connected to the upper side of the drainage cover upper shell (11); the welding gun sealing cover (34) and the welding gun (5) are detachably connected; the welding gun clamping mechanism is located outside the welding gun mounting barrel (31); and the welding gun clamping mechanism is used to clamp the welding gun (5) installed in the welding gun mounting barrel (31).

5. The multi-directional air intake underwater welding micro-drainage cover according to claim 4, characterized in that: The water retaining mechanism (4) comprises a water retaining cover (41) and a sealing ring (42). The sealing ring (42) is detachably mounted below the water retaining cover (41). Two drainage holes distributed at 180 degrees are provided on both sides of the sealing ring (42).

6. The multi-directional air intake underwater welding micro-drainage cover according to claim 5, characterized in that: The number of the ball head air intake mechanisms (2) is four and the angle between each is 90 degrees. The rails, longitudinal fixing bolts (15) and transverse fixing bolts (16) are all arranged on the drainage cover base (1). The drainage cover base (1) is provided with a mounting hole for mounting the welding gun mounting mechanism (3).

7. The multi-directional air intake underwater welding micro-drainage cover according to claim 6, characterized in that: There are three electromagnets, which are respectively a top air intake electromagnet (12), a radial air intake electromagnet (13), and a tangential air intake electromagnet (14). A track baffle (18) is provided on the track.

8. The multi-directional air intake underwater welding micro-drainage cover according to claim 7, characterized in that: The welding gun clamping mechanism includes a clamping spring (33) and a plurality of welding gun clamping blocks (32). A plurality of sliding grooves are axially arranged on the wall of the welding gun mounting tube (31). The plurality of welding gun clamping blocks (32) are slidably mounted in the sliding grooves. The clamping spring (33) is detachably arranged around the periphery of the plurality of welding gun clamping blocks (32).

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