An underwater electric welding training device

Abstract

The utility model relates to a kind of underwater electric cutting electric welding training devices, belong to underwater training tool technical field.It includes the electro-hydraulic push rod installed in the outside of diving training pool, the movable end of electro-hydraulic push rod is equipped with fixing frame, fixing frame is equipped with baltic board extending to training pool, the fixed forceps made of stainless steel material is installed at baltic board tail end, training steel plate is installed on fixed forceps, and ground terminal post made of stainless steel material is welded on the outer wall of fixed forceps.The utility model can adjust the height and angle of underwater training steel plate, reduce the damage to underwater training personnel and related equipment metal parts, prevent electric shock injury.

Description

Technical Field

[0001] This utility model relates to an underwater electric cutting and welding training device, belonging to the technical field of underwater training equipment. Technical Background

[0002] Submarine tunnel construction, cross-sea (river and lake) bridge operations, marine ranch maintenance, offshore drilling and mining, port and dock construction, maritime emergency rescue, underwater security, and underwater archaeology all rely on divers. The initial training, maintenance of skills, and enhancement of divers' capabilities depend on daily basic training.

[0003] Currently, in-pool (tower) training is the safest and most efficient method for daily diver training. However, due to cost and maintenance considerations, diving training pools (towers) are generally above-ground steel structures, which have the following main drawbacks: 1. Underwater electric cutting and welding training uses DC welding machines or silicon rectifier welding machines. The ground wire clamp of the welding machine is clamped to any metal part connected to the workpiece being welded (cut) in the training pool (tower). The positive and negative poles of the welding machine (welding gun and ground wire) are far apart. During underwater electric welding or cutting training, the diver is between the positive and negative poles. The current passes through the diver's body, which can cause harm. Especially at the moment of arc initiation and arc interruption, the voltage will suddenly rise, and the output voltage will reach 60±5V. People will feel an electric shock. In severe cases, an electric shock accident may occur.

[0004] 2. During underwater electric cutting or welding, because the diver is positioned between the positive and negative poles, the metal equipment located between the positive and negative poles (such as the solder joints of telephone lines inside the diving mask, galvanized components, and the solder joints of electrical components such as underwater video recording equipment) is extremely prone to oxidation and corrosion, resulting in a short service life.

[0005] 3. The pool (tower) is equipped with a workbench for fixing the steel plate used for training. The lifting of the workbench requires manual adjustment of the lifting mechanism. The lifting mechanism is made of metal, and underwater current will spread to the lifting mechanism. Once the operator touches the lifting mechanism, he will also feel an electric shock. In addition, the lifting mechanism has a complicated structure, and the connection points are prone to sticking together due to arcing. Furthermore, the angle of the workbench cannot be adjusted, making it impossible to meet the diverse training needs of underwater electric cutting and welding.

[0006] Therefore, there is an urgent need to design an underwater electric cutting and welding training device that can solve the above-mentioned technical problems. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an underwater electric cutting and welding training device that can adjust the height and angle of the underwater training steel plate, reduce damage to underwater training personnel and related equipment metal parts, and prevent electric shock injuries.

[0008] The present invention relates to an underwater electric cutting and welding training device, which is characterized by including an electro-hydraulic push rod installed outside the diving training pool. A fixed frame is installed at the movable end of the electro-hydraulic push rod. A bakelite board extending into the training pool is installed on the fixed frame. A fixing clamp made of stainless steel is installed at the end of the bakelite board. A training steel plate is installed on the fixing clamp. A grounding terminal made of stainless steel is welded to the outer wall of the fixing clamp. Preferably, the fixing clamp is a rectangular frame made of four stainless steel channel steels welded together. A square tubular clamp handle is welded to the outer wall of one of the channel steels. The side and top surfaces of the other channel steel directly opposite to the first channel steel are removed to form a sieve opening, which facilitates the insertion of the training steel plate. The training steel plate is inserted into the rectangular frame from the sieve opening and then fixed by a fixing screw. Preferably, a square sleeve is installed at the lower position of the bakelite board. The square sleeve penetrates the entire thickness direction of the bakelite board and its two ends are located outside the bakelite board. The square tubular pliers are inserted into the square sleeve, and a fastening mechanism for fixing the square tubular pliers is installed on the square sleeve. Preferably, the fastening mechanism includes a fastening set screw, a fastening washer is installed at one end of the fastening set screw located inside the square sleeve, the fastening set screw includes a nut with internal threads installed on the square sleeve, a screw rod with external threads screwed into the nut, a rotating handle is installed at the top of the screw rod, and the fastening washer is installed at the bottom of the screw rod. Preferably, the fixing frame includes a fixing tray horizontally installed on the movable end of the electro-hydraulic actuator, a steel fixing frame is installed on the upper surface of the fixing tray, one end of the bakelite board is installed on one end of the steel fixing frame, and a counterweight steel plate is installed on the other end of the steel fixing frame. Preferably, a support roller is installed at one end of the bakelite board that extends into the training pool. The support roller has a rubber wheel and is in contact with the inner wall of the training pool.

[0009] This utility model of an underwater electric cutting and welding training device has a reasonable structural design and the following beneficial effects: 1. The grounding terminal fixed to the clamp connects to the grounding clamp of the DC welding machine or silicon rectifier welding machine, minimizing the distance between the positive and negative electrodes. During arc ignition in electric welding or cutting, the current is directly closed-loop, eliminating the need to pass through the diver's body via water, thus reducing harm to the diver. Furthermore, the close distance between the positive and negative electrodes significantly reduces the risk of oxidation and corrosion of metal components located outside the electrodes in the pool, extending their service life.

[0010] 2. Installing bakelite boards can prevent current from spreading to the electro-hydraulic actuator, block the impact and corrosion of the electro-hydraulic actuator by the strong current (150-600 amperes) of underwater electric welding and cutting, and at the same time avoid electric shock injuries to divers and staff on the training pool platform caused by leakage of the electro-hydraulic actuator.

[0011] 3. By using square tubular clamp handles and square sleeves in conjunction, the clamp can be adjusted to a 90-degree angle. The clamp can firmly fix the training steel plate, enabling divers to train in underwater flat welding, horizontal angle welding, vertical welding, vertical angle welding, overhead welding, overhead angle welding, horizontal electric cutting, vertical electric cutting, and overhead electric cutting techniques, thus meeting diverse underwater electric cutting and welding training needs.

[0012] 4. The height of the steel plate clamp for training in the pool can be adjusted by raising and lowering the electro-hydraulic actuator (adjustable within 1500mm), which is very convenient for training divers to perform bottom-touching and levitation operations.

[0013] In summary, this utility model has an ingenious structural design that can adjust the height and angle of the steel plate used for underwater training, thus meeting diverse underwater electric cutting and welding training needs. At the same time, the distance between the positive and negative poles of the welding machine (welding gun and ground wire) is minimized, and the current does not need to form a circuit through the water or the diver's body, greatly reducing the risk of electric shock and the corrosion of metal equipment by stray currents. It has a certain degree of universality and promotion prospects. Attached Figure Description

[0014] Figure 1 This utility model discloses a structural schematic diagram of an underwater electric cutting and welding training device. Figure 2 : A schematic diagram of the fixing clamp; Figure 3 Diagram showing the positional relationship between the square sleeve and the fastening set screw. Detailed Implementation

[0015] The following detailed description of the present invention is provided with reference to the accompanying drawings.

[0016] This embodiment provides a training device for underwater electric cutting and welding, as shown in the attached document. Figure 1-3This includes an electro-hydraulic actuator 1 (with a telescopic stroke of 1500mm and a thrust greater than 100kg) installed outside the diving training pool 3 (the location indicated by the reference numeral 3 in the attached diagram is one of the wall panels of the diving training pool; the entire training pool is an open cuboid with a top that is raised above the ground, approximately 3 meters high, with a water level of 2.5-2.8 meters). The diving training pool is usually built indoors. The movable end of the electro-hydraulic actuator 1 is equipped with a fixing frame 2, and a bakelite board 4 (length x width x thickness 1800 x 300 x 30mm) is installed on the fixing frame 2, extending into the training pool 3. In use, the bakelite board 4 is located outside the training pool 3, and the end of the bakelite board 4 is equipped with an adjustable fixing clamp 5 made of channel steel (duplex stainless steel). The training steel plate is installed on the fixing clamp 5, and the outer wall of the fixing clamp 5 is equipped with a grounding terminal 6 made of stainless steel (duplex stainless steel). The shape of the grounding terminal 6 is arbitrary, as long as the grounding clamp of the welding machine can hold it.

[0017] The mounting frame 2 includes a steel mounting tray 2-1 horizontally mounted on the movable end of the electro-hydraulic actuator 1. A steel mounting bracket 2-2 is mounted on the upper surface of the mounting tray 2-1. One end of the bakelite board 4 is mounted on one end of the steel mounting bracket 2-2, and a counterweight steel plate 7 (weighing 15±5kg) is mounted on the other end of the steel mounting bracket 2-2. Before underwater training, the training steel plate is mounted on the mounting clamp 5. If flat welding (cutting) training is to be conducted, the mounting clamp 5 is adjusted to a horizontal position with the working surface of the steel plate facing upwards. If vertical welding (cutting) training is to be conducted, the mounting clamp 5 is adjusted to a vertical position with the working surface of the steel plate facing vertically. If overhead welding (cutting) training is to be conducted, the mounting clamp 5 is adjusted to a horizontal position with the working surface of the steel plate facing downwards. The ground wire clamp of the DC welding machine or silicon rectifier welding machine is clamped onto the ground wire terminal 6. The fixing clamp 5 is moved to the designated depth in the diving training pool 3 by the electro-hydraulic push rod 1. Underwater trainees conduct underwater electric welding or electric cutting training at the designated depth and working angle.

[0018] The fixing clamp 5 in this embodiment is a rectangular frame 11 welded from four #5 stainless steel channel steels. The inner diameter of the rectangular frame 11 is 330mm. A square tubular clamp handle 10 is welded to the outer wall of one of the channel steels. The side and top surfaces of the other channel steel directly opposite this channel steel are removed to form a scoop opening 13, which facilitates the insertion of training steel plates. The training steel plates are inserted into the rectangular frame 11 through the scoop opening 13 and then fixed by fixing screws 12. It is suitable for flat welding (cutting), vertical welding (cutting), and overhead welding (cutting) of training steel plates with a length x width of 300 x 300mm and a thickness of 6-20mm. When used with an electro-hydraulic actuator 1, it can be used for underwater fixed position and floating position training. This fixing clamp can also be used for basic training of land welders. A square sleeve 9 is installed at the lower part of the bakelite board 4. The square sleeve 9 penetrates the entire thickness of the bakelite board 4 and its two ends are located outside the bakelite board 4. A square tubular pliers handle 10 is partially inserted into the square sleeve 9. A fastening mechanism for fixing the square tubular pliers handle 10 is installed on the square sleeve 9. The fastening mechanism includes a fastening set screw 14, one end of which is located inside the square sleeve 9 and a fastening washer 15 is installed. The fastening set screw 14 includes a nut 14-1 with internal threads installed on the square sleeve 9. A threaded rod 14-2 with external threads is screwed into the nut 14-1. A rotating handle 14-3 is installed at the top of the threaded rod 14-2, and the fastening washer 15 is installed at the bottom of the threaded rod 14-2. In use, the square tubular pliers handle 10, with the angle adjusted, is inserted into the square sleeve 9. The rotating handle 14-3 is rotated so that the fastening washer 15 presses tightly against the outer surface of the square tubular pliers handle 10, thereby fixing the square tubular pliers handle 10 inside the square sleeve 9.

[0019] In this embodiment, the end of the bakelite board 4 extending into the training pool 3 is equipped with a support roller 8. The support roller 8 is in contact with the inner wall of the training pool 3. The support roller 8 is close to the pool wall of the training pool 3, which not only reduces shaking during operation, but also plays a guiding role when lifting and lowering.

Claims

1. A training device for underwater electric cutting and welding, characterized in that... It includes an electro-hydraulic actuator installed outside the diving training pool. The movable end of the electro-hydraulic actuator is equipped with a mounting bracket. A bakelite board extending into the training pool is mounted on the mounting bracket. A fixing clamp made of stainless steel is mounted at the end of the bakelite board. A training steel plate is mounted on the fixing clamp. A grounding terminal made of stainless steel is welded to the outer wall of the fixing clamp.

2. The underwater electric cutting and welding training device according to claim 1, characterized in that... The fixing clamp is a rectangular frame made of four stainless steel channel steels welded together. A square tubular clamp handle is welded to the outer wall of one of the channel steels. The side and top surfaces of the other channel steel directly opposite the first channel steel are removed to form a sieve opening. A training steel plate is inserted into the rectangular frame from the sieve opening and then fixed by a fixing screw.

3. The underwater electric cutting and welding training device according to claim 1, characterized in that... A square sleeve is installed at the lower part of the bakelite board. The square sleeve runs through the entire thickness of the bakelite board and its two ends are located outside the bakelite board. The square tubular pliers handle is inserted into the square sleeve. A fastening mechanism for fixing the square tubular pliers handle is installed on the square sleeve.

4. The underwater electric cutting and welding training device according to claim 3, characterized in that... The fastening mechanism includes a fastening set screw, with a fastening washer installed at one end of the fastening set screw located inside the square sleeve. The fastening set screw includes a nut with internal threads installed on the square sleeve, with a threaded rod with external threads screwed into the nut. A rotating handle is installed at the top of the threaded rod, and the fastening washer is installed at the bottom of the threaded rod.

5. The underwater electric cutting and welding training device according to claim 1, characterized in that... The fixing frame includes a fixing tray horizontally installed on the movable end of the electro-hydraulic actuator. A steel fixing frame is installed on the upper surface of the fixing tray. One end of the bakelite board is installed on one end of the steel fixing frame, and a counterweight steel plate is installed on the other end of the steel fixing frame.

6. An underwater electric cutting and welding training device according to claim 1 or 5, characterized in that... The end of the bakelite board extending into the training pool is equipped with a support roller. The support roller has a rubber wheel and is in contact with the inner wall of the training pool.

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