Welding device for on-site construction of steel pipe pile

Abstract

A welding device for on-site construction of a steel pipe pile, comprising connection members, a water extraction assembly, a gas extraction assembly, a gas conveying assembly, a pair of large-diameter shells (4), a pair of small-diameter shells (5) coaxially arranged at both ends of the large-diameter shells (4) respectively, and operation gloves (14); two lifting assemblies, each comprising a screw rod (10), a driving motor (9), a sliding block (29) and a limiting rod (11), the driving motor (9) being provided on the top of a large-diameter shell (4), the top of the screw rod (10) being coaxially and fixedly connected to an output shaft of the driving motor (9), the top of the limiting rod (11) being fixedly connected to the inner top wall of the large-diameter shell (4), and one end of the sliding block (29) being threadedly connected to the screw rod (10), and the limiting rod (11) passing through the other end of the sliding block (29); and a pair of placement boxes (13), which are fixedly connected to the corresponding sliding blocks (29), welding apparatuses being placed in the placement boxes (13). The welding device is suitable for underwater welding of a sacrificial anode block on a steel pipe pile and, according to welding point locations, enable the welding apparatuses to be adjusted to an operable range for an operator, thereby facilitating welding.

Description

Welding device for on-site construction of steel pipe piles Technical Field

[0001] The present invention relates to the field of welding equipment, and more particularly to a welding device for on-site construction of steel pipe piles. Background Art

[0002] Before the construction of steel pipe piles, the brackets (usually L-shaped) used to install the sacrificial anode blocks need to be welded to the steel pipe piles in the prefabrication yard. Two pairs of brackets are welded to each steel pipe pile, and the two pairs of brackets are respectively set on both sides of the steel pipe pile. Each pair of brackets is installed on the outer wall of the steel pipe pile. A pair of brackets is installed with a sacrificial anode block (as shown in Figure 1, 1 is the steel pipe pile, 2 is the sacrificial anode block, and 3 is the bracket). During construction, when the steel pipe pile is hoisted into the sea and placed vertically, when the sacrificial anode block needs to be installed, the two ends of the sacrificial anode block are first connected to the corresponding pair of brackets with bolts, and then wet welding reinforcement is performed using gas metal arc welding. Since gas metal arc welding is used for wet welding, the welding wire and the workpiece to be welded are directly placed in water. The arc burns in bubbles formed by the continuous thermal decomposition, evaporation or reaction of the gas-forming agent and water. Since the burning in the bubbles directly exposes the human body to this environment, the work is very dangerous. Therefore, there is an urgent need for a welding device that can reduce the danger of underwater welding operations. In the prior art, the patent application number 202210871531.2 discloses a clamping device for underwater welding, which is designed with an upper shell and a lower shell. The upper shell and the lower shell can cooperate to form a closed cavity, and can be welded underwater in a dry environment. However, when the device is applied to the underwater welding of sacrificial anode blocks of steel pipe piles, since the diameter of the steel pipe pile is large (about 0.5m) and the length of the sacrificial anode blocks used is long (about 1m), and the steel pipe piles need to be welded at four points (the four points formed by the upper and lower ends of a pair of sacrificial anode blocks in Figure 1), when the above device is applied, each time a welding point is changed, the upper shell and the lower shell need to be disassembled and reassembled, which is troublesome to operate. Therefore, there is an urgent need for a welding device that is easy to operate and suitable for underwater welding of sacrificial anode blocks of steel pipe piles.

[0003] Summary of the Invention

[0004] An object of the present invention is to solve at least the above-mentioned problems and provide a welding device for on-site construction of steel pipe piles, which is suitable for underwater welding of sacrificial anode blocks on steel pipe piles. The welding equipment can be adjusted to the range that the operator can operate according to the welding point, thereby facilitating welding.

[0005] In order to achieve these objects and other advantages of the present invention, a welding device for on-site construction of steel pipe piles is provided, comprising a connecting piece, a water pumping assembly, an air pumping assembly, an air delivery assembly, and a pair of opposing shells, each shell comprising a semi-cylindrical large-diameter shell and a pair of coaxially arranged semi-cylindrical small-diameter shells at both ends of the large-diameter shell, the pair of shells being detachably connected by the connecting piece and each connection of the pair of shells being provided with a first sealing layer, a sealing sleeve being formed after the pair of shells are connected, the two ends of the sealing sleeve being small-diameter cylinders, the inner wall of the small-diameter cylinder being provided with a second sealing layer so as to be sealed and sleeved on the steel pipe pile, the water pumping end of the water pumping assembly being in communication with the interior of the large-diameter cylinder, the air pumping end of the air pumping assembly being in communication with the interior of the large-diameter cylinder, the interior of the air delivery assembly being in communication with the interior of the large-diameter cylinder, a pair of operating gloves being respectively provided at the upper and lower parts of each large-diameter shell, the operating gloves being sealably extended into the large-diameter shell, a first observation window being provided on the large-diameter shell above each pair of operating gloves, and further comprising:

[0006] Two sets of lifting components, which correspond to a pair of large-diameter shells, each lifting component includes a screw, a drive motor, a slider, and a limit rod. The drive motor is installed at the top of the corresponding large-diameter shell, and the screw and the limit rod are both vertically arranged in the large-diameter shell. The top of the screw rotates and extends out of the top of the large-diameter shell and is coaxially fixed with the output shaft of the drive motor. The bottom of the screw is close to the inner bottom wall of the large-diameter shell. The top of the limit rod is fixed to the inner top wall of the corresponding large-diameter shell, and the bottom is close to the inner bottom wall of the large-diameter shell. One end of the slider is screwed on the screw, and the other end is passed through the limit rod;

[0007] A pair of storage boxes, which correspond to a pair of sliders one by one, the storage boxes are fixedly connected to the corresponding sliders, one side wall of the storage box is open and a removable sealing cover is provided at the open position, welding equipment is placed in the storage box, and the storage box is arranged on one side of the two pairs of operating gloves.

[0008] Preferably, it also includes a driving assembly, which includes a sliding block slidably arranged on the bottom wall of the placement box, a first plate arranged above the sliding block, and a second plate arranged above the first plate, the first plate being fixed to the inner wall of the placement box, the second plate being slidably connected to the inner wall of the placement box, the top of the sliding block being an inclined surface and the lower end of the inclined surface being close to the opening of the placement box, a vertical baffle being provided at the lower end of the inclined surface of the sliding block, push rods being vertically provided at both ends of the bottom of the second plate, the bottom of the push rods being slidably connected to the inclined surface to form a sliding driving pair, and a vertical support plate being provided between the first plate and the second plate. A first rebound spring is provided, and a horizontal second rebound spring is provided between a side of the sliding block away from the open end of the placement box and the inner wall of the placement box; wherein, a handheld welding machine is placed on the second plate, and a welding rod is placed on the inclined surface. When the handheld welding machine is placed on the second plate and the welding rod is placed on the inclined surface, the first rebound spring and the second rebound spring are both in a compressed state. When the handheld welding machine is taken out of the second plate, the first rebound spring rebounds to lift the second plate upward, and at the same time, the first rebound spring rebounds to push the sliding block out of the placement box from the opening of the placement box. At the same time, the push rod slides upward along the inclined surface.

[0009] Preferably, it further includes a pair of protective covers, which correspond to a pair of drive motors. The protective covers are arranged outside the corresponding drive motors and the bottom of the protective covers is detachably and sealedly connected to the top of the corresponding large-diameter shell.

[0010] Preferably, a mounting block is provided on the inner top wall of the large-diameter shell, and the top of the screw is rotated to pass through the mounting block and is coaxially fixed to the output shaft of the drive motor, the top of the limit rod is fixed to the bottom of the mounting block, and the side wall of the mounting block is provided with a third sealing layer; it also includes a waterproof component, which includes a frame and a waterproof bag mounted on the bottom of the frame, the frame is adapted to the mounting block, and the waterproof bag is used to cover the screw, the limit rod and the placement box.

[0011] Preferably, a lighting lamp is provided at the bottom of the mounting block.

[0012] Preferably, the baffles are a pair, and the pair of baffles are respectively arranged at two ends of the lower end of the inclined surface of the sliding block, and the top of the baffle is close to the bottom of the first plate.

[0013] Preferably, each large-diameter shell is provided with a second observation window, and a pair of second observation windows corresponds to a pair of placement boxes in a one-to-one manner, and the second observation windows are used to observe the corresponding placement boxes.

[0014] The present invention has at least the following beneficial effects:

[0015] By setting connecting parts, pumping components, air extraction components, gas transmission components, shells (large diameter shells and small diameter shells), operating gloves, a first observation window, a screw, a drive motor, a slider, a limit rod, and a placement box, when in use, first connect the two ends of the sacrificial anode block to the two brackets with bolts, and then install a pair of shells on the corresponding positions of the steel pipe piles. After the installation of the pair of shells, a sealing sleeve is formed, which includes a large diameter tube in the middle and small diameter tubes at both ends. The small diameter tube is tightly mounted on the steel pipe pile, and the large diameter tube surrounds the four welding points on the steel pipe pile to facilitate the operator to perform welding operations. Then, the water in the large diameter tube is pumped out by the water extraction component, and then the gas required for welding (air or oxygen and other related gases) is transported to the large diameter tube by the gas transmission component. During welding, the gas transmission component and the air extraction component The components cooperate with each other, the exhaust component extracts the turbid gas generated by welding, and the gas supply component delivers fresh gas; during welding, the operator can put both hands into the large-diameter cylinder through the operating gloves, then open the sealing cover, take out the welding equipment, and weld the welding point at that location through the first observation window. When it is necessary to weld another welding point on the same side of the steel pipe pile, the welding equipment is put back into the placement box, and then the drive motor is started to move the placement box containing the welding equipment to the corresponding position of the other welding point, and then the operator puts the operating gloves at that location into the large-diameter cylinder to weld the welding point at that location; overall, an underwater welding device suitable for on-site construction of steel pipe piles is provided, which can weld sacrificial anode blocks to steel pipe piles. Compared with existing underwater wet welding devices, the safety is greatly improved and it is easy to use.

[0016] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic diagram of the distribution position of sacrificial anode blocks on a steel pipe pile according to one technical solution of the present invention;

[0018] FIG2 is a schematic structural diagram of a welding device for on-site construction of a steel pipe pile according to one technical solution of the present invention installed on a steel pipe pile;

[0019] FIG3 is a schematic structural diagram of a welding device for on-site construction of steel pipe piles according to one technical solution of the present invention;

[0020] FIG4 is a top view of a large-diameter shell according to one technical solution of the present invention installed on a steel pipe pile;

[0021] FIG5 is a bottom view of a welding device for on-site construction of steel pipe piles according to one technical solution of the present invention;

[0022] FIG6 is a top view of a welding device for on-site construction of steel pipe piles according to one technical solution of the present invention;

[0023] FIG7 is a schematic diagram of the structure of the sliding block extending out of the placement box according to one technical solution of the present invention;

[0024] FIG8 is a schematic structural diagram of a sliding block retracting placement box according to one technical solution of the present invention;

[0025] FIG9 is a schematic side view of the structure of a sliding block provided with a baffle according to one technical solution of the present invention;

[0026] FIG10 is a schematic structural diagram of a waterproof component according to one of the technical solutions of the present invention.

[0027] Figure numerals: 1-steel pipe pile; 2-sacrificial anode block; 3-bracket; 4-large diameter shell; 5-small diameter shell; 6-connecting edge; 7-bolt; 8-fastening nut; 9-driving motor; 10-screw; 11-limiting rod; 12-mounting block; 13-placement box; 14-operating gloves; 15-first plate; 16-second plate; 17-sliding block; 18-first rebound spring; 19-second rebound spring; 20-push rod; 21-roller; 22-baffle; 23-first observation window; 24-second observation window; 25-welding rod; 26-handheld welding machine; 27-frame; 28-waterproof bag; 29-slider; 30-lighting lamp; 31-water pump; 32-air pump; 33-air supply device; 34-protective cover. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0030] As shown in Figures 2-10, the present invention provides a welding device for on-site construction of steel pipe piles, including a connecting piece, a water pumping assembly, an air pumping assembly, an air delivery assembly, and a pair of opposing shells, each shell including a semi-cylindrical large-diameter shell 4 and a pair of coaxially arranged semi-cylindrical small-diameter shells 5 at both ends of the large-diameter shell 4, the pair of shells being detachably connected by the connecting piece and each connection of the pair of shells being provided with a first sealing layer, a sealing sleeve being formed after the pair of shells are connected, the two ends of the sealing sleeve being small-diameter cylinders, the inner wall of the small-diameter cylinder being provided with a second sealing layer to be sealed and sleeved on the steel pipe pile 1, the water pumping end of the water pumping assembly being in communication with the interior of the large-diameter cylinder, the air pumping end of the air pumping assembly being in communication with the interior of the large-diameter cylinder, the interior of the air delivery assembly being in communication with the interior of the large-diameter cylinder, a pair of operating gloves 14 being provided at the upper and lower parts of each large-diameter shell 4, respectively, the operating gloves 14 being sealably extended into the large-diameter shell 4, a first observation window 23 being provided on the large-diameter shell 4 located above each pair of operating gloves 14, and further comprising:

[0031] Two groups of lifting components, which correspond to a pair of large-diameter shells 4, each lifting component includes a screw 10, a drive motor 9, a slider 29, and a limit rod 11. The drive motor 9 is installed at the top of the corresponding large-diameter shell 4, and the screw 10 and the limit rod 11 are both vertically arranged in the large-diameter shell 4. The top of the screw 10 rotates and extends out of the top of the large-diameter shell 4 and is coaxially fixed to the output shaft of the drive motor 9. The bottom of the screw 10 is close to the inner bottom wall of the large-diameter shell 4. The top of the limit rod 11 is fixed to the inner top wall of the corresponding large-diameter shell 4, and the bottom is close to the inner bottom wall of the large-diameter shell 4. One end of the slider 29 is screwed to the screw 10, and the other end is passed through the limit rod 11;

[0032] A pair of storage boxes 13, which correspond one-to-one with a pair of sliders 29. The storage boxes 13 are fixedly connected to the corresponding sliders 29. One side wall of the storage box 13 is open and a removable sealing cover is provided at the open area. The welding equipment is placed in the storage box 13. The storage box 13 is located on one side of the two pairs of operating gloves 14;

[0033] In the above technical solution, a pair of straight edges of the shell extend outward to form a connecting edge 6, and a first sealing layer is applied on the opposite surfaces of the pair of connecting edges 6. A plurality of perforations are provided at intervals on each connecting edge 6, and the plurality of perforations on the pair of connecting edges 6 correspond to each other and are coaxial. Each coaxial perforation forms a group of connecting channels. There are multiple connecting members, and the multiple connecting members correspond to the multiple connecting channels one by one. The connecting members include bolts 7, fastening nuts 8 and gaskets (not shown in the figure). During installation, after the bolts 7 pass through the gaskets and the corresponding connecting channels, the fastening nuts 8 are tightly screwed on the outlet ends of the bolts 7 to tightly connect the pair of shells to form a sealing sleeve. The sealing sleeve includes a large-diameter cylinder located in the middle (composed of a pair of large-diameter shells 4 The large diameter cylinder is formed by merging and coaxially arranged at both ends of the large diameter cylinder (formed by merging a pair of small diameter shells 5), the inner wall of the small diameter cylinder is provided with a second sealing layer so that the small diameter cylinder sealing sleeve is arranged on the steel pipe pile 1, and the large diameter cylinder covers the four welding points on the steel pipe pile 1 so that the operator can perform welding; the bottom of the large diameter cylinder (the bottom of any large diameter shell 4) is provided with a water outlet, and the pumping assembly includes a water pump 31 and a water pipe, and the pumping end of the water pump 31 is connected to the water pipe. The other end of the water pipe is connected to the water outlet, a water stop valve is provided on the water pipe, an air inlet is provided on the top of the large diameter cylinder (the top of any large diameter shell 4), the air delivery component includes an air supply device 33 and an air delivery pipe, a valve is provided on the air delivery pipe, the air supply end of the air supply device 33 is connected to one end of the air delivery pipe, the other end of the air delivery pipe is connected to the air inlet, the bottom of the large diameter cylinder (the bottom of any large diameter shell 4) is provided with an air outlet, the air extraction component includes an air pump 32 and an air outlet The pipe has one end connected to the suction end of the suction pump 32 and the other end connected to the air outlet. A valve is provided on the air outlet pipe. In actual use, the suction component cooperates with the gas delivery component. The suction component extracts the turbid air generated by welding in the large-diameter cylinder, and the gas delivery component delivers fresh gas to the large-diameter cylinder to facilitate smooth welding. There are four welding points distributed on the steel pipe pile 1. The four welding points are divided into two pairs. The two pairs of welding points are located on both sides of the steel pipe pile 1. Each pair of welding points The contact points are arranged in an upper and lower manner, namely, a welding point located at the upper part and a welding point located at the lower part. A pair of first observation windows 23 are provided on each large-diameter shell 4. The pair of first observation windows 23 corresponds to the pair of welding points on the corresponding side. The welding points are observed through the first observation windows 23 to facilitate the operator to weld. Operating gloves 14 are provided on both sides below each first observation window 23 to facilitate the operator to reach into the large-diameter cylinder (that is, the corresponding large-diameter shell 4) through the operating gloves 14 to weld the sacrificial anode block 2 and the bracket 3;The lifting assembly includes a driving motor 9 installed on the top of the corresponding large-diameter shell 4. In actual use, a waterproof motor can be used. The output shaft of the driving motor 9 is coaxially fixed with a screw 10. The screw 10 is arranged in the large-diameter cylinder (that is, in the corresponding large-diameter shell 4). Screw holes and through holes are respectively provided on both ends of the slider 29. The screw 10 is adapted to the screw holes, and the limiting rod 11 is adapted to the through holes. The slider 29 is screwed to the screw 10 through the screw holes. At the same time, the slider 29 is slidably penetrated on the limiting rod 11 through the through holes. The top of the limiting rod 11 is fixed to the inner top wall of the large-diameter shell 4, and the bottom is close to the large-diameter shell 4. The inner bottom wall is configured so that when the drive motor 9 drives the screw 10 to rotate, the slider 29 moves up and down along the screw 10 (the limit rod 11 limits the rotation of the slider 29). A placement box 13 is fixedly connected to the slider 29. Welding equipment (such as a welding machine and welding rod 25) is placed in the placement box 13. One side wall of the placement box 13 is open and a sealing cover (not shown in the figure) is detachably provided at the open portion. The placement box 13 moves with the movement of the slider 29 so that the welding equipment can be adjusted to a position convenient for the operator. In actual use, the position of the placement box 13 is set according to needs, and the placement box 13 is set on one side of a pair of operating gloves 14 to facilitate the operator to take the welding equipment.

[0034] In this technical solution, during use, the two ends of the sacrificial anode block 2 are first connected to the two brackets 3 by bolts 7, and then a pair of shells are installed on the corresponding positions of the steel pipe pile 1. After the installation of the pair of shells, a sealing sleeve is formed. The sealing sleeve includes a large-diameter tube in the middle and small-diameter tubes at both ends. The small-diameter tube is tightly sleeved on the steel pipe pile 1, and the large-diameter tube surrounds the four welding points on the steel pipe pile 1 to facilitate the operator to perform welding operations. Then, the water in the large-diameter tube is drained out by the water pumping component, and the gas required for welding (air or oxygen and other related gases) is transported to the large-diameter tube by the gas supply component. During welding, the gas supply component The components cooperate with the exhaust component, the exhaust component extracts the turbid gas generated by welding, and the gas delivery component delivers fresh gas; during welding, the operator can put both hands into the large-diameter cylinder through the operating gloves 14, then open the sealing cover, take out the welding equipment, and weld the welding point at that location through the first observation window 23. When it is necessary to weld another welding point on the same side of the steel pipe pile 1, the welding equipment is put back into the placement box 13, and then the drive motor 9 is started to move the placement box 13 containing the welding equipment to the corresponding position of the other welding point. Then the operator can put his hands into the large-diameter cylinder through the operating gloves 14 at that location to weld the welding point at that location;

[0035] The beneficial effect of adopting this technical solution is that by arranging connecting parts, a water pumping assembly, an air pumping assembly, a gas transmission assembly, a shell (a large diameter shell 4 and a small diameter shell 5), an operating glove 14, a first observation window 23, a screw 10, a drive motor 9, a slider 29, a limit rod 11, and a placement box 13, an underwater welding device suitable for on-site construction of a steel pipe pile 1 is provided, in which the sacrificial anode block 2 is welded to the steel pipe pile 1. Compared with the existing underwater wet welding device, the safety is greatly improved and it is easy to use.

[0036] In another technical solution, a driving assembly is also included, which includes a sliding block 17 slidably arranged on the inner bottom wall of the placement box 13, a first plate 15 arranged above the sliding block 17, and a second plate 16 arranged above the first plate 15. The first plate 15 is fixed to the inner wall of the placement box 13, and the second plate 16 is slidably connected to the inner wall of the placement box 13. The top of the sliding block 17 is inclined and the lower end of the inclined surface is close to the opening of the placement box 13. A vertical baffle 22 is provided at the lower end of the inclined surface of the sliding block 17. Push rods 20 are respectively vertically provided at both ends of the bottom of the second plate 16. The bottom of the push rod 20 is slidably connected to the inclined surface to form a sliding drive pair. A vertical baffle 22 is provided between the first plate 15 and the second plate 16. A first rebound spring 18 is provided, and a horizontal second rebound spring 19 is provided between a side of the sliding block 17 away from the open end of the placement box 13 and the inner wall of the placement box 13; wherein, a handheld welder 26 is placed on the second plate 16, and a welding rod 25 is placed on the inclined surface. When the handheld welder 26 is placed on the second plate 16 and the welding rod 25 is placed on the inclined surface, the first rebound spring 18 and the second rebound spring 19 are both in a compressed state. When the handheld welder 26 is taken out of the second plate 16, the first rebound spring 18 rebounds and then lifts the second plate 16. At the same time, the first rebound spring 18 rebounds and pushes the sliding block 17 out of the opening of the placement box 13 and out of the placement box 13. At the same time, the push rod 20 slides upward along the inclined surface;

[0037] In the above technical solution, the second plate 16, the first plate 15 and the sliding block 17 are horizontally arranged in the placing box 13 from top to bottom. The second plate 16 is slidably connected to the inner wall of the placing box 13, the first plate 15 is fixed to the inner wall of the placing box 13, and the sliding block 17 is slidably connected to the inner bottom wall of the placing box 13. A vertical first rebound spring 18 is provided between the first plate 15 and the second plate 16. The top of the first rebound spring 18 is fixed to the bottom of the second plate 16, and the bottom is fixed to the top of the first plate 15. The top surface of the moving block 17 is an inclined surface, and the lower end of the inclined surface is close to the opening of the placement box 13. A baffle 22 is provided at the lower end of the inclined surface to prevent the welding rod 25 from sliding out of the inclined surface. One end of a horizontal second rebound spring 19 is connected to the side of the sliding block 17 away from the open end of the placement box 13. The other end of the second rebound spring 19 is fixed to the inner wall of the placement box 13. Push rods 20 are provided at both ends of the bottom of the second plate 16. A roller 21 is provided at the bottom of the push rod 20. The roller 21 is slidably connected to the inclined surface to form a sliding drive pair; the second plate 1 6 is used to place a handheld welder 26, and the inclined surface is used to place a welding rod 25. The side wall of the placing box 13 located below the first plate 15 is open and a detachable sealing cover (not shown in the figure) is provided at the opening so that the welding rod 25 can be placed from the opening to the top surface of the sliding block 17. In actual use, the handheld welder can be a small handheld high-temperature welding gun (gas type) or a handheld welder 26 with an external power supply, etc. It can be designed according to actual conditions. If a handheld welder 26 with an external power supply is used, the electrical components compatible with the handheld welder 26 can be provided outside the sealing sleeve, and the wires in the electrical components can be placed outside the sealing sleeve. The seal passes through the sealing sleeve and the placement box 13 and is connected to the handheld welder 26. The length of the wire must meet the requirements of the up and down movement of the placement box 13 and the use of the handheld welder 26 by the operator. The weight of the handheld welder 26 and the compression and rebound properties of the first rebound spring 18 and the second rebound spring 19 are adaptively selected or adjusted according to actual conditions. If the handheld welder 26 is not heavy enough, it can be appropriately weighted within the range of human hand support. If the handheld welder 26 is heavy enough, the first rebound spring 18 and the second rebound spring 19 with corresponding rebound and compression properties are selected to make the three compatible.

[0038] In the above technical solution, when in use, the operator removes the sealing cover from the placement box 13 and takes the handheld welder 26 out of the second plate 16. At this time, the first rebound spring 18 rebounds to lift the second plate 16 upward, and at the same time, the second rebound spring 19 rebounds to push the sliding block 17 out of the opening of the placement box 13, thereby exposing part of the welding rod 25 outside the placement box 13 for the operator to take. When the operator finishes welding, he puts the handheld welder 26 on the second plate 16. When the second plate 16 is pressed, the first rebound spring 18 is compressed, and the push rod 20 is finally driven to push the sliding block 17 back into the placement box 13. The operator can then switch to another welding point and start the drive motor 9 to move the placement box 13 to a position convenient for operation. In actual use, after the operator places the handheld welding machine 26 on the second plate 16, he can also gently push the baffle 22 or the side wall of the sliding block 17 to quickly retract the sliding block 17 into the placement box 13.

[0039] The beneficial effect of adopting this technical solution is that, by setting the sliding block 17, the first plate 15, the second plate 16, the first rebound spring 18, the second rebound spring 19, the push rod 20, the inclined surface, and the baffle 22, a driving assembly is provided, which uses the weight of the welding machine to pop out the welding rod 25, making it convenient to take the welding rod 25, and when the welding machine is put back after welding, the welding rod 25 automatically retracts into the placement box 13, making it convenient to move the placement box 13 later. The overall design mainly takes into account that the operating range and convenience of human hands in the large-diameter cylinder are limited, and the space for placing the welding rod 25 is relatively narrow. In order to improve the convenience of manual operation and ease of use, the sliding block 17 that pops out / retracts as the welding machine is taken out is designed to place the welding rod 25, which makes it convenient for humans to take the welding rod 25 or use a lighter force to cause the sliding block 17 to retract into the placement box 13, thereby improving operational convenience and welding efficiency.

[0040] In another technical solution, a pair of protective covers 34 are further included, and the pair of protective covers 34 corresponds to a pair of drive motors 9. The protective covers 34 are arranged outside the corresponding drive motors 9 and the bottom of the protective covers 34 is detachably and sealedly connected to the top of the corresponding large-diameter shell 4; specifically, the bottom of the protective cover 34 can be snapped into the top of the large-diameter shell 4, and a sealing layer is laid inside the card groove to achieve sealing; the beneficial effect of adopting this technical solution is that by designing the protective cover 34, the motor can be prevented from being affected by seawater, thereby improving the service life of the drive motor 9.

[0041] In another technical solution, a mounting block 12 is provided on the inner top wall of the large-diameter shell 4, and the top of the screw rod 10 is rotated to pass through the mounting block 12 and is coaxially fixed to the output shaft of the drive motor 9, the top of the limit rod 11 is fixed to the bottom of the mounting block 12, and the side wall of the mounting block 12 is covered with a third sealing layer; it also includes a waterproof component, which includes a frame 27 and a waterproof bag 28 mounted on the bottom of the frame 27, the frame 27 is adapted to the mounting block 12, and the waterproof bag 28 is used to cover the screw rod 10, the limit rod 11 and the placement box 13; specifically, a horizontal mounting block 12 is provided on the inner top wall of each large-diameter shell 4, and the top of the screw rod 10 is rotated to pass through the mounting block 12 and is coaxially fixed to the output shaft of the drive motor 9, the top of the limit rod 11 is fixed to the bottom of the mounting block 12, and the side wall of the mounting block 12 is covered with a third sealing layer. The side walls of the block 12 are adapted so that when the frame 27 is framed on the mounting block 12, the waterproof bag 28 is in a sealed state. The waterproof bag 28 is used to cover the screw 10, the limit rod 11 and the installation box under the mounting block 12; when in use, the waterproof bag 28 of the waterproof component is first sleeved on the screw 10, the limit rod 11 and the installation box. Then, the frame 27 of the waterproof component is framed on the mounting block 12, and then a pair of shells are installed. When a pair of shells are installed on the steel pipe pile 1 and the water inside the large-diameter cylinder is drained, the operator inserts his hand into the large-diameter shell 4 through the operating glove 14, pulls the frame 27 off the mounting block 12, and then starts the subsequent welding operation; the technical solution has the beneficial effect that, by setting the mounting block 12 and the waterproof component, the screw 10, the limit rod 11 and the placement box 13 located inside the large-diameter shell 4 are waterproofly protected, thereby improving the service life of the screw 10, the limit rod 11 and the placement box 13.

[0042] In another technical solution, a lighting lamp 30 is provided at the bottom of the mounting block 12; when in use, the lighting lamp 30 assists the operator in welding.

[0043] In another technical solution, the baffle 22 is a pair, and the baffles 22 are arranged at both ends of the lower end of the inclined surface of the sliding block 17, and the top of the baffle 22 is close to the bottom of the first plate 15; specifically, the baffles 22 are arranged at both ends of the lower end of the inclined surface and the top of the baffle 22 is close to the bottom of the first plate 15, which can prevent the welding rod 25 from sliding out of the sliding block 17 as much as possible.

[0044] In another technical solution, a second observation window 24 is provided on each large-diameter shell 4, and a pair of second observation windows 24 and a pair of placement boxes 13 correspond one to one. The second observation window 24 is used to observe the corresponding placement box 13; specifically, the length of the second observation window 24 can be set to be smaller than the height of the large-diameter shell 4, such as 10 cm smaller. In this way, the movement of the placement box 13 and the use of the placement box 13 can be observed through the second observation window 24.

[0045] The number of equipment and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the welding apparatus for on-site construction of steel pipe piles of the present invention will be apparent to those skilled in the art.

[0046] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A welding device for on-site construction of steel pipe piles, comprising a connecting piece, a water pumping assembly, an air pumping assembly, an air delivery assembly, and a pair of opposing shells, each shell comprising a semi-cylindrical large-diameter shell and a pair of coaxially arranged semi-cylindrical small-diameter shells at both ends of the large-diameter shell, the pair of shells being detachably connected by the connecting piece and each connection of the pair of shells being provided with a first sealing layer, a sealing sleeve is formed after the pair of shells are connected, the two ends of the sealing sleeve are small-diameter cylinders, the inner wall of the small-diameter cylinder is provided with a second sealing layer to be sealed on the steel pipe pile, the water pumping end of the water pumping assembly is connected to the inside of the large-diameter cylinder, the air pumping end of the air pumping assembly is connected to the inside of the large-diameter cylinder, the inside of the air delivery assembly is connected to the inside of the large-diameter cylinder, and the inside of the air delivery assembly is connected to the inside of the large-diameter cylinder, characterized in that A pair of operating gloves is respectively provided at the upper and lower parts of each large-diameter shell, and the operating gloves are sealed and extended into the large-diameter shell. A first observation window is provided on the large-diameter shell above each pair of operating gloves, and further comprises: Two groups of lifting components, corresponding to a pair of large-diameter shells, each lifting component includes a screw, a driving motor, a slider, and a limit rod. The driving motor is installed at the top of the corresponding large-diameter shell, and the screw and the limit rod are both vertically arranged in the large-diameter shell. The top of the screw rotates and extends out of the top of the large-diameter shell and is coaxially fixed to the output shaft of the driving motor. The bottom of the screw is close to the inner bottom wall of the large-diameter shell. The top of the limit rod is fixed to the inner top wall of the corresponding large-diameter shell, and the bottom is close to the inner bottom wall of the large-diameter shell. One end of the slider is screwed to the screw, and the other end is passed through the limit rod. A pair of placement boxes, which correspond to a pair of sliders one by one, the placement boxes are fixedly connected to the corresponding sliders, one side wall of the placement box is open and a sealing cover is detachably provided at the open portion, welding equipment is placed in the placement box, and the placement box is arranged on one side of the two pairs of operating gloves.

2. The welding device for on-site construction of steel pipe piles according to claim 1, characterized in that: The invention also includes a driving component, which includes a sliding block slidably arranged on the bottom wall of the placement box, a first plate arranged above the sliding block, and a second plate arranged above the first plate, wherein the first plate is fixedly connected to the inner wall of the placement box, and the second plate is slidably connected to the inner wall of the placement box. The top of the sliding block is an inclined surface, and the lower end of the inclined surface is close to the opening of the placement box. A vertical baffle is provided at the lower end of the inclined surface of the sliding block, and push rods are vertically provided at both ends of the bottom of the second plate. The bottom of the push rod is slidably connected to the inclined surface to form a sliding drive pair, and a vertical first A rebound spring, a horizontal second rebound spring is provided between a side of the sliding block away from the open end of the placement box and the inner wall of the placement box; wherein a handheld welding machine is placed on the second plate, and a welding rod is placed on the inclined surface. When the handheld welding machine is placed on the second plate and the welding rod is placed on the inclined surface, the first rebound spring and the second rebound spring are both in a compressed state. When the handheld welding machine is taken out of the second plate, the first rebound spring rebounds to lift the second plate upward, and at the same time, the first rebound spring rebounds to push the sliding block out of the placement box from the opening of the placement box, and at the same time, the push rod slides upward along the inclined surface.

3. The welding device for on-site construction of steel pipe piles according to claim 1, characterized in that: It also includes a pair of protective covers, which correspond to a pair of driving motors. The protective covers are arranged outside the corresponding driving motors, and the bottom of the protective covers is detachably sealed and connected to the top of the corresponding large-diameter shell.

4. The welding device for on-site construction of steel pipe piles as claimed in claim 3, characterized in that: A mounting block is provided on the inner top wall of the large-diameter shell, and the top of the screw is rotated to pass through the mounting block and is coaxially fixed to the output shaft of the drive motor, the top of the limit rod is fixed to the bottom of the mounting block, and the side wall of the mounting block is provided with a third sealing layer; it also includes a waterproof component, which includes a frame and a waterproof bag mounted on the bottom of the frame, the frame is adapted to the mounting block, and the waterproof bag is used to cover the screw, the limit rod and the placement box.

5. The welding device for on-site construction of steel pipe piles as claimed in claim 4, characterized in that: A lighting lamp is arranged at the bottom of the mounting block.

6. The welding device for on-site construction of steel pipe piles as claimed in claim 2, characterized in that: The baffles are a pair, and the pair of baffles are respectively arranged at two ends of the lower end of the inclined surface of the sliding block, and the top of the baffle is close to the bottom of the first plate.

7. The welding device for on-site construction of steel pipe piles as claimed in claim 1, characterized in that: A second observation window is provided on each large-diameter shell, and a pair of second observation windows and a pair of placement boxes correspond one to one, and the second observation windows are used to observe the corresponding placement boxes.

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