CN206882967U - The hermetically sealed underwater automatic welding wire-feed motor of lightweight - Google Patents

Abstract

Lightweight and fully sealed underwater automatic welding wire feeder, including a wire feeder box with several interfaces, a wire reel mechanism sealed and insulated in the wire feeder box, a deceleration drive mechanism, a gear drive mechanism, a wire pressing mechanism, and a sealed and waterproof function. The sealed motor of the wire feeder box includes the air circuit interface, the power cable interface and the welding torch interface. The protective gas charged into the wire feeder box through the air circuit interface forms a box inside the wire feeder box that is balanced with the water pressure outside the box. Air pressure, sealed motor, deceleration transmission mechanism, and gear transmission mechanism are connected in sequence. A pressure channel is formed between the installed wire pressing mechanism and the gear transmission mechanism. The welding wire wound on the wire reel mechanism is compressed and transported to the Welding torch interface for the wire feeder box. The utility model has the advantages of light weight, good sealing performance, and can greatly reduce the possibility of failure of equipment in underwater operation. The utility model belongs to the technical field of underwater welding.

Description

Lightweight fully sealed underwater automatic welding wire feeder

technical field

The utility model belongs to the technical field of underwater welding, in particular to a light-weight fully sealed underwater automatic welding wire feeder.

Background technique

With the rapid development of the national economy and marine technology, a large number of marine projects need to be constructed and maintained, and marine projects are constantly advancing to the deep sea. Therefore, there is an urgent need for underwater welding. As a key technology for marine engineering construction and transformation, underwater welding has been paid more and more attention. Scholars and scientific research institutions have taken underwater welding technology as a research topic. Due to the complexity and uncertainty of the underwater environment, there is no complete The underwater robot welding system is used in underwater engineering welding, so the application requirements of underwater welding are becoming more and more urgent. As one of the key equipment for underwater welding, the welding submersible wire feeding device has promoted the development of the underwater robot welding system. In engineering applications, there are many factors that affect the quality of underwater welding, and the stable combustion of the arc during the welding process is the fundamental guarantee for high-quality welding. In order to make the underwater arc burn stably, there must be a corresponding power supply to match it, stable and reliable wire feeding equipment, and a stable power supply-arc system. At present, there have been some stable underwater welding wire feeding equipment, and these underwater welding wire feeding equipment seal the wire feeding box to maintain a stable environment in the box. However, these existing devices only seal the wire feeder box, and multiple sealing treatments are used in the process of sealing the wire feeder box. Multiple sealing treatments are equivalent to "serial connection", even if the reliability of a single sealing treatment is high, However, the reliability of multiple sealing treatments is often unsatisfactory, so there is a possibility of water seepage in the equipment, which will cause damage to the motor and malfunction of the equipment; moreover, once water seepage occurs in the equipment, the equipment will be damaged, and the repair is difficult and expensive. . Furthermore, the existing underwater wire feeding device is bulky and heavy, and the underwater operation is inconvenient.

Utility model content

In view of the above problems, the utility model provides a lightweight fully sealed underwater automatic welding wire feeder which adopts double sealing and waterproof treatment and can effectively reduce the possibility of failure of the equipment underwater due to water seepage.

Lightweight and fully sealed underwater automatic welding wire feeder, including a wire feeder box with several interfaces, a wire reel mechanism sealed and insulated in the wire feeder box, a deceleration drive mechanism, a gear drive mechanism, a wire pressing mechanism, and a sealed and waterproof function. The sealed motor of the wire feeder box includes the air circuit interface, the power cable interface and the welding torch interface. The protective gas charged into the wire feeder box through the air circuit interface forms a box inside the wire feeder box that is balanced with the water pressure outside the box. Air pressure, sealed motor, deceleration transmission mechanism, and gear transmission mechanism are connected in sequence. A pressure channel is formed between the installed wire pressing mechanism and the gear transmission mechanism. The welding wire wound on the wire reel mechanism is compressed and transported to the Welding torch interface for the wire feeder box. With this structure, even if water seepage occurs once, it will not affect the normal operation and work of the equipment, and maintenance only needs to re-seal and waterproof the wire feeder box; the double-sealed sealing and waterproof effect is better, greatly reducing the impact of water seepage on the equipment , Reduce water seepage failures, improve equipment stability, and wire feeding is more stable.

As a preference, the wire feeder box is provided with a sealed and insulated welding torch interface and a power cable interface, and the welding torch interface and the power cable interface are connected by cables inside the wire feeder box. With this structure, seal and waterproof treatment is done at the interface of the wire feeder box, the first line of defense for equipment waterproofing, and a relatively stable internal working environment of the box is formed.

As a preference, the welding torch interface includes a welding torch holder, a stainless steel flange, an insulating sleeve, an O-ring, an insulating gasket, and a welding cable terminal, and the welding torch holder passes through the stainless steel flange, insulating The sleeve, the wall of the wire feeder box, and the insulating gasket extend into the wire feeder box. The welding torch holder is fixed on the wall of the wire feeder box through the bolt connection flange with the sleeve of the sealing ring. The welding torch holder is located at one end outside the wire feeder box. Install the welding cable terminals and seal with an O-ring between the insulating sleeve and the wall of the wire feeder box. Adopting this structure can effectively seal, waterproof and insulate the welding torch interface, and can tightly seal the wire feeding box, thereby ensuring a stable working environment in the wire feeding box.

As a preference, the power cable interface includes a conductive cylinder, an insulating sleeve, an insulating sealing sleeve, an O-shaped sealing ring, a round nut, and a welding cable terminal. , The insulating sealing sleeve is fixed by a round nut, the conductive post is tightened by a hexagonal nut at one end inside the wire feeder box, and the welding cable terminal is installed on the end of the conductive post outside the wire feeding box, and the insulating sealing cover and the conductive post, wire feeding The case is sealed with an O-ring. This structure can effectively seal, waterproof and insulate the power cable interface, and can tightly seal the wire feeder box, thus ensuring a stable working environment in the wire feeder box.

As a preference, the sealed motor includes a motor case, a stator, a rotor, a back cover, and a front cover, the back cover is installed on the bottom of the motor case, the front cover is sealed and installed on the open end of the motor case through a static sealing ring, and the stator is fixed in the motor case. The rotor rotating inside the stator is located in the stator, and one end of the rotor is installed on the rear cover, and the other end of the rotor protrudes from the front cover and is sealed and installed on the front cover through a dynamic sealing ring. With this structure, the sealed motor is sealed in a combination of dynamic and static sealing, which can effectively seal and waterproof while the motor is outputting power. It is the second line of defense to ensure the normal operation and work of the equipment underwater. The motor is protected and the probability of water seepage in the motor is reduced.

As a preference, the reduction transmission mechanism includes a reduction gear box, a worm gear, and a worm screw. The worm gear and the worm screw are all in the gear reduction gear box. Connected with the gear transmission mechanism. With this structure, the torque can be transmitted stably, and the output torque of the motor can be decelerated to meet the working requirements.

As a preference, the gear transmission mechanism includes a gear bracket and a driving wheel and a driven wheel set on the gear bracket. meshing; the driven wheel set includes two driven wheels, one end of the driven wheel is provided with a gear meshed with the driving wheel, and the other end of the driven wheel is provided with an annular groove for the welding wire to pass through. With this structure, the gear transmission is stable, which is conducive to the stable delivery of welding wire; while using the gear transmission to transport the welding wire, the path of the gear transmission and the path of welding wire delivery are separated to prevent the welding wire from being stirred into the gear during delivery, thereby affecting the wire feeding work. .

As a preference, the wire spool mechanism includes a wire spool, a wire spool shaft, and a wire spool support frame, one end of the wire spool shaft is fixed on the wire spool support frame, and the wire spool is installed on the wire spool shaft through a through hole in the middle, and the wire spool shaft is another One end is locked with a compression nut. With this structure, the welding wire reel is stably rotatably installed in the wire feeder box, and this structure is beneficial to the layout design of parts in the wire feeder box, saving space and reducing the volume of the wire feeder.

As a preference, the thread pressing mechanism includes a thread pressing handle and two thread pressing wheel groups, the thread pressing wheel group includes a thread pressing wheel and a thread pressing wheel mounting plate, the thread pressing wheel is fixed on the thread pressing wheel mounting plate, and the thread pressing wheel One end of the mounting plate is installed on the wire feeder box, and the two pressing wheels are respectively placed on the two driven wheels, and the pressing handle for pressing the pressing wheel group to the driven wheel group is installed on the two pressing wheel mounting plates middle. With this structure, when the debugging device is installed, the welding wire is located in the groove of the driven wheel, and the depth of the wire pressing wheel in the annular groove of the driven wheel can be adjusted by adjusting the wire pressing handle, thereby adjusting the pressing force of the wire pressing mechanism on the welding wire. tightness.

As a preference, it also includes a welding wire detection mechanism. The welding wire detection mechanism includes a conductive column, an insulating plate, a connecting plate, a shaft, and a torsion spring. There is a conductive column in contact with the welding wire, an insulating plate is installed between the conductive column and the connection plate, and the conductive column is electrically connected with the output terminal of the welding power supply. With this structure, the conductive column can keep in contact with the welding wire, and at the same time, the conductive column is connected to the output end of the welding power supply. Therefore, the welding wire, the conductive column, and the output end of the welding power supply form a loop. If not, it can be judged whether there is still a margin in the welding wire.

Advantage of the utility model:

1. The design of double sealing and waterproof treatment is adopted, that is, the wire feeding box and the sealed motor are waterproofed and sealed at the same time. Therefore, the sealing and waterproof performance is better. Even if a water seepage occurs, the normal operation and work of the equipment will not be affected, and maintenance is only required. Re-seal and waterproof the wire feeding box; greatly reduce the probability of equipment failure when working underwater, improve the stability of the equipment, and make the wire feeding more stable.

2. Insulate and seal the power cable interface, welding torch interface, etc., effectively sealing the wire feeder box tightly.

3. One end of the driven wheel is provided with a gear that meshes with the driving wheel, and the other end of the driven wheel is provided with an annular groove for the welding wire to pass through. On the driven wheel, the gear for transmission and the annular groove for conveying the welding wire are separated, so in While using the gear transmission to transport the welding wire, it can also prevent the transported welding wire from being involved in the gear, and the equipment works and runs more stably and smoothly.

4. Equipped with a welding wire detection mechanism, which can detect whether there is still a surplus of welding wire; therefore, when it is difficult to observe the amount of welding wire, the welding wire detection mechanism can detect the surplus of welding wire.

5. The welding wire straightening mechanism can straighten the wound welding wire and play a guiding role so that the welding wire enters the gear transmission mechanism smoothly.

Description of drawings

Figure 1 is a structural schematic diagram of a lightweight fully sealed underwater automatic welding wire feeder.

Figure 2 is a top view of a lightweight fully sealed underwater automatic welding wire feeder.

Fig. 3 is a schematic structural diagram of the power cable interface.

Fig. 4 is a structural schematic diagram of the welding torch interface.

Fig. 5 is a front view of the welding wire detection mechanism.

Fig. 6 is a top view of the welding wire detection mechanism.

Fig. 7 is a structural schematic diagram of the wire reel mechanism.

Among them, 1 is the welding gun interface, 2 is the wire feeder box, 3 is the driven wheel, 4 is the driving wheel, 5 is the insulating pad, 6 is the gear bracket, 7 is the sealed motor, 8 is the installation interface, 9 is the wire reel mechanism, 10 11 is the wire pressing wheel mounting plate, 12 is the wire pressing wheel, 13 is the wire pressing handle, 14 is the welding wire straightening mechanism, 15 is the handle shaft, 16 is the welding wire detection mechanism, 17 is the air circuit interface, 18 19 is the motor drive interface, 20 is the welding wire conduit, 21 is the handle nut, 22 is the hex nut, 23 is the conductive cylinder, 24 is the insulating sleeve, 25 is the insulating sealing sleeve, 26 is the round nut, 27 is the welding Cable terminal, 28 is an O-ring, 29 is a welding torch seat, 30 is a stainless steel flange, 31 is an insulating sleeve, 32 is an O-ring, 33 is a hexagon socket head screw, 34 is an insulating sleeve gasket, 35 is a conductive column, 36 is an insulating sleeve, 37 is a connecting plate, 38 is a torsion spring, 39 is a shaft, 40 is a hex nut, 41 is a wire reel support frame, 42 is a wire reel, 43 is a wire reel shaft, and 44 is a compression nuts.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Lightweight fully sealed underwater automatic welding wire feeder, including wire feeder box, welding wire reel mechanism, reduction transmission mechanism, gear transmission mechanism, wire pressing mechanism, welding wire straightening mechanism, welding wire detection mechanism, welding wire reel mechanism, reduction transmission mechanism, The gear transmission mechanism, wire pressing mechanism, welding wire straightening mechanism and welding wire detection mechanism are all sealed in the wire feeder box. The air pressure inside the box is balanced by the external water pressure, the sealed motor, the reduction transmission mechanism, and the gear transmission mechanism are connected in sequence. After installation, a pressure channel is formed between the wire pressing mechanism and the gear transmission mechanism. The channel is compacted and delivered to the torch port of the wire feeder housing.

In this embodiment, the wire feeder box is in the shape of a rectangular parallelepiped and is made of titanium alloy. On the left side panel of the wire feeder box, there are welding torch interface and gas path interface, and on the right side panel of the wire feeder box, there are power cable interface, welding torch interface and power supply. The cable interface is insulated and sealed, and the welding torch interface and the power cable interface are connected by cables inside the wire feeder box.

In this embodiment, a visible panel is provided on the upper side plate of the wire feeder box, and several interfaces are provided on the wire feeder box, including a welding torch interface, an air circuit interface, a power cable interface, a motor drive cable interface, and an installation interface. The sealing of the components in the wire feeder box, the seal of the visible panel of the wire feeder box, the sealing of the welding torch interface, the sealing of the gas circuit interface, the sealing of the power cable interface, the sealing of the motor drive cable interface, and the sealing of the installation interface are all sealed with static sealing rings And use insulation treatment. To replace the welding wire, you only need to disassemble the visible panel. The maintenance is simple and convenient, and it can be applied to welding in various occasions. Like the traditional wire feeder, the gas equal to the water pressure is filled into the wire feeder box, and the air pressure inside the wire feeder box and the water pressure outside the box cancel each other out, reducing the pressure on the wire feeder box and other components.

As shown in Figure 4, the welding torch interface includes a welding torch holder, a stainless steel flange, an insulating sleeve, an O-ring, an insulating gasket, and a welding cable terminal. The welding torch holder passes through the stainless steel flange and the insulating sleeve from outside the wire feeder box , the wall of the wire feeder box, and the insulating gasket extend into the wire feeder box, and the welding torch holder is fixed on the wall of the wire feeder box through the bolted connection flange with the sleeve of the sealing ring, and the welding gun holder is installed at one end outside the wire feeder box Welding cable terminals, sealed with an O-ring between the insulating sleeve and the wall of the wire feeder box. The torch holder is secured by hexagon socket head screws.

As shown in Figure 3, the power cable interface includes a conductive cylinder, an insulating sleeve, an insulating sealing sleeve, an O-ring, a round nut, and a welding cable terminal. The wall and the insulating sealing sleeve are fixed by round nuts, and one end of the conductive cylinder inside the wire feeder box is tightened by a hex nut, and the end of the conductive cylinder outside the wire feeding box is installed with a welding cable terminal. , The O-ring seal is used between the wire feeder boxes.

In this embodiment, the sealed motor is fixed on the bottom plate of the wire feeder box. The sealed motor includes a motor box, a stator, a rotor, a back cover, and a front cover. At the open end of the case, the stator is fixed in the motor case, the rotor rotating inside the stator is located in the stator and one end of the rotor is installed on the back cover, and the other end of the rotor extends out of the front cover and is sealed and installed on the front cover through a dynamic sealing ring. The reduction transmission mechanism includes a reduction box, a worm gear, and a worm. The worm gear and the worm are all in the reduction box. The worm is connected to the output end of the sealed motor, and the worm gear and the worm are meshed. The output shaft of the worm wheel extends out of the reduction box and is connected to the gear transmission mechanism. . The gear transmission mechanism includes the gear bracket and the driving wheel and the driven wheel group in the gear bracket. The driving wheel is installed at the end where the output shaft of the worm wheel is connected to the gear mechanism, and the driven wheel group driven by the driving wheel meshes with the driving wheel; the driven wheel group It includes two driven wheels, one end of the driven wheel is provided with a gear meshed with the driving wheel, and the other end of the driven wheel is provided with an annular groove for the passage of welding wire. The thread pressing mechanism includes a thread pressing handle and two thread pressing wheel sets. The thread pressing wheel set includes a thread pressing wheel and a thread pressing wheel mounting plate. The thread pressing wheel is fixed on the thread pressing wheel mounting plate. One end of the thread pressing wheel mounting plate is installed on the On the wire feeder box, two wire pressing wheels are respectively placed on two driven wheels, and the wire pressing handle is used to press the wire pressing wheel group to the driven wheel group, and the wire pressing handle is installed in the middle of the two pressing wheel mounting plates. The wire pressing handle comprises a handle shaft and a handle nut. In the wire feeder box, between the two driven wheels and above the driven wheels, the installation end of the handle shaft is provided. The installation end of the handle shaft is provided with a vertical cavity for accommodating the handle shaft in the vertical direction, and a welding wire supply is provided in the horizontal direction. passage through. The handle shaft protrudes from between the two pressing wheel mounting plates and a handle nut is installed at the end, and the handle nut is tightened so that the pressing wheel group is pressed against the driven wheel group. Install the wire spool mechanism on the front side panel of the wire feeder housing. The welding wire spool mechanism includes a wire spool shaft, a wire spool, a compression nut, and a wire spool support frame. The wire spool support frame is installed in the wire feeder box, and one end of the wire spool shaft is fixed on the wire spool support frame by a hexagonal nut for winding the welding wire. There is a through hole matching the wire spool shaft in the middle of the wire spool, the wire spool shaft passes through the through hole of the wire spool, and the wire spool is installed on the other end of the wire spool shaft through a spring sleeve and a yellow mold spring, and then compressed by a compression nut This presses the wire spool against the wire spool shaft. The connection between the gear bracket and the bottom plate of the wire feeder box adopts the combination of insulating bolt sleeves and insulating pads, so that the bolts connected to the bottom plate of the wire feeder box and the gear bracket do not directly contact and connect, and realize the inside and outside of the gear bracket and the wire feeder box. insulation.

In this embodiment, a welding wire straightening mechanism and a welding wire detection mechanism are also included. The welding wire straightening mechanism is installed on the outside of the gear bracket, and the welding wire straightening mechanism is located between the welding wire reel mechanism and the gear bracket. The welding wire straightening mechanism is a cylinder, and a through hole matching the diameter of the welding wire is opened in the center of the cylinder. The straight mechanism is installed on the outside of the gear bracket. The welding wire detection mechanism includes a conductive column, an insulating plate, a connecting plate, a shaft, and a torsion spring. One end of the shaft is fixed in the wire reel, and the other end is installed with a connecting plate through a torsion spring. An insulating plate is installed between the column and the connection plate, and the conductive column is electrically connected with the output terminal of the welding power supply. When the welding wire is sufficient, the conductive column is connected with the welding wire and the output end of the welding power supply to form a loop; if the welding wire is insufficient, the loop is disconnected. Therefore, it can be judged whether the welding wire has a surplus by detecting whether the detection circuit of the welding wire is connected.

The wire feed case, motor case, reducer case, gear bracket, etc. are all made of titanium alloy, and other components are fully made of low-density, corrosion-resistant titanium alloy materials, so the weight and volume of the equipment are significantly reduced, and it has Better corrosion resistance. Secondly, try to reduce the space in the design, the welding wire is in the order of one kilogram, and the wire pressing handle is also designed to be miniaturized. Therefore, the lightweight fully sealed underwater automatic welding wire feeder also has the advantages of small size and light weight.

The working process and principle of the utility model: the sealed motor is sealed and waterproofed and installed in the wire feeder box, and the welding wire reel is installed on the welding wire reel shaft. Loosen the handle nut of the wire pressing handle, so that the wire pressing wheel moves up slightly, thereby reducing the pressure on the welding wire from the ring groove on the wire pressing wheel and the driven wheel. Pull out the welding wire and enter the welding wire conduit, then pass the welding wire through the welding wire straightening mechanism, and then enter the gear bracket; the welding wire passes through the annular groove on a driven wheel, and then passes through the channel at the installation end of the handle shaft, and then passes through another driven wheel. Enter the welding torch interface behind the annular groove of the welding torch interface, and the welding torch is installed on the welding torch interface. At this time, adjust the welding wire so that the welding wire in the annular groove is located under the wire pressing wheel at the same time, tighten the handle nut, and the pressing wire wheel presses down on the welding wire, and the welding wire is located between the pressing wire wheel and the driven wheel, that is, the welding wire passes through The pressure channel formed between the wire pressing wheel and the driven wheel, the tighter the handle nut is tightened, the greater the pressure on the welding wire, the tightness of the handle nut can be adjusted properly during installation to make the pressure of the welding wire more appropriate. Connect all terminals that need to be connected, cover the visible panel, and seal and insulate the visible panel. Then check the tightness and insulation of each interface of the wire feeder box. If the tightness and insulation are all right, then check whether the detection circuit of the welding wire is connected. If the circuit is open, it means that there is still a surplus of welding wire. At this time, fill the wire feeder box with protective gas through the gas circuit interface to balance the air pressure inside the box and the external water pressure. Start the welding torch and seal the motor, the motor transmits power to the reduction transmission mechanism, the worm gear rotates, the driving wheel follows the rotation, the driven wheel is driven by the driving wheel and also starts to rotate, the welding wire moves to the direction of the welding torch interface, so that the subsequent welding wire reel will also continue to rotate The coiled wire is released to provide the required wire for welding.

In addition to the manner mentioned in this embodiment, the above-mentioned embodiment is a preferred embodiment of the present utility model, but the implementation of the present utility model is not limited by the above-mentioned embodiment, and any other does not deviate from the spirit of the present utility model Changes, modifications, substitutions, combinations, and simplifications made under the principle should all be equivalent replacement methods, and all are included in the protection scope of the present utility model.

Claims (10)

1. the hermetically sealed underwater automatic welding wire-feed motor of lightweight, it is characterised in that：Including the wire feed cabinet provided with several interfaces and Sealed insulation in the welding wire disc mechanism in wire feed cabinet, reduction gearing mechanism, gear drive, silk pressing mechanism, have sealing The sealed electric-motor of water-proof function, the interface on wire feed cabinet include air-path interface, power cable interface and welding gun interface, pass through gas Road interface is filled with the protective gas in wire feed cabinet and formed in wire feed cabinet and air pressure in the case of hydraulic balance outside case, sealing electricity Machine, reduction gearing mechanism, gear drive connect successively, and pressure is formed between the silk pressing mechanism and gear drive after installation Power passage, the welding wire on welding wire disc mechanism are compacted, are delivered to the welding gun interface of wire feed cabinet through pressure channel.

2. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 1, it is characterised in that：Wire feed cabinet is provided with The welding gun interface and power cable interface, welding gun interface and power cable interface of sealed insulation processing pass through in wire feed cabinet inside Cable connection.

3. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 2, it is characterised in that：Welding gun interface includes weldering Rifle gun platform, steel flange, insulation sleeve, O-ring seals, insulation spacer, welding cable binding post, welding gun gun platform is by wire-feed motor Rise outside case and sequentially pass through steel flange, insulation sleeve, wire-feed motor tank wall, insulation spacer and stretch into again in wire feed cabinet, welding gun gun platform It is fixed on by the bolted flange with sealing ring sleeve on wire-feed motor tank wall, welding gun gun platform is located at one end outside wire feed cabinet Erecting and welding cable connecting terminal, sealed between insulation sleeve and wire-feed motor tank wall with O-ring seals.

4. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 2, it is characterised in that：Power cable interface bag Conducting post, insulation sleeve, insulated enclosure set, O-ring seals, round nut, welding cable binding post are included, conducting post is by wire feed Sequentially pass through insulation sleeve, wire-feed motor tank wall, insulated enclosure set in cabinet to fix by round nut again, conducting post is in wire feed cabinet Interior one end is tightened by hex nut, one end erecting and welding cable connecting terminal of the conducting post outside wire feed cabinet, exhausted Sealed between edge sealing shroud and conducting post, wire feed cabinet with O-ring seals.

5. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 1, it is characterised in that：Sealed electric-motor includes electricity Machine cabinet, stator, rotor, bonnet, protecgulum, bonnet are installed on motor case bottom, and protecgulum is seal-installed on by static sealing ring Motor case openend, stator are fixed in motor case, are located in the rotor that stator interior rotates in stator and rotor one end Bonnet is installed on, the rotor other end stretches out protecgulum and is seal-installed on protecgulum by dynamic seal ring.

6. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 1, it is characterised in that：Reduction gearing mechanism bag Decelerating chassis, worm gear, worm screw are included, worm gear, worm screw are in decelerating chassis, and the output end of worm screw and sealed electric-motor connects, worm gear It is meshed with worm screw, the output shaft of worm gear stretches out decelerating chassis and is connected with gear drive.

7. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 6, it is characterised in that：Gear drive bag Driving wheel on gear stand and gear stand, driven wheels are included, driving wheel is installed on the output shaft and gear drive machine of worm gear The connected one end of structure, the driven wheels and driving wheel driven by driving wheel are meshed；Driven wheels include two driven pulleys, driven The gear that wheel one end is provided with and driving wheel is meshed, the driven pulley other end are provided with the annular groove passed through for welding wire.

8. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 7, it is characterised in that：Welding wire disc mechanism includes Wire reel, welding wire dish axle, wire reel bearing support, welding wire dish axle one end are fixed on wire reel bearing support, and wire reel passes through centre Through hole is arranged in welding wire dish axle, and the welding wire dish axle other end is locked with clamp nut.

9. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 7, it is characterised in that：Silk pressing mechanism includes pressure Silk handle and two thread pressing wheel groups, thread pressing wheel group include thread pressing wheel and thread pressing wheel installing plate, and thread pressing wheel is fixed on thread pressing wheel installation On plate, thread pressing wheel installing plate one end is arranged on wire feed cabinet, and two thread pressing wheels are respectively placed on two driven pulleys, for that will press The silk pressing handle that silk wheel group is pressed in driven wheels is arranged among two thread pressing wheel installing plates.

10. the hermetically sealed underwater automatic welding wire-feed motor of lightweight as claimed in claim 1, it is characterised in that：Also include welding wire to examine Mechanism is surveyed, welding wire testing agency includes conductive pole, insulation board, gusset piece, axle, torsion spring, and axle one end is fixed on wire feed cabinet, another Gusset piece is installed in end by torsion spring, is provided with gusset piece and keeps the conductive pole that contacts with welding wire, conductive pole and gusset piece it Between insulation board is installed, conductive pole and the electrical connection of source of welding current output end.