JP6475443B2 - Welding light shield - Google Patents

Description

  The present invention relates to a welding light shield.

  For example, when building a building, if the strength of the ground is insufficient, the ground may be reinforced by driving steel pipe piles into the ground. At this time, another steel pipe pile is welded to the steel pipe pile driven into the ground and joined in the longitudinal direction, and the steel pipe pile is driven deep into the ground.

  When performing the welding operation, intense arc light is generated. Since the arc light generated by this welding contains harmful ultraviolet rays, it is required to take measures such as shielding the arc light. For example, in Article 325, Paragraph 1 of the Industrial Safety and Health Law, when welding or fusing with arc gas is performed, in principle, the place where intense light (ultraviolet, visible, infrared) diverges must be partitioned. It is stipulated that it should be. For this reason, conventionally, a partition-like shielding body is self-supported to partition a welding work place.

  For example, in Patent Document 1 below, a plurality of flat mounting seats are arranged on the installation surface, a portal frame is erected through the mounting seats, and a curtain-shaped light shielding portion is provided on the portal frame. Therefore, the arc light from the arc welder is shielded.

Japanese Utility Model Publication No. 60-71483

  However, in the technique of Patent Document 1 described above, when the installation surface is flat, the gate-shaped frame can be erected and the curtain-shaped light shielding portion can be arranged, but the ground at the welding site is inclined. If the installation surface is not flat due to the presence of a step or a step, the shield cannot be made independent. In addition, it is possible to support the shield by an operator, but in this case, it is necessary to secure a worker for supporting the shield separately from the worker who performs the welding operation.

  An object of this invention is to provide the welding light shielding tool which can arrange | position a shielding body above the installation surface which is not flat, and can shield the light by welding.

The welding light shielding tool according to the present invention is a welding light shielding tool that shields light from welding, and a frame body provided with a hooked portion, and a side of a welding work part that is suspended from the frame body and welded. And a shielding body that shields light generated by welding, and the shielding body is disposed so as to surround the welding work portion except for an opening for an operator to enter and exit .

  In this welding light shield, the frame body can be hung from above by hooking the hooked part to the hook part of a heavy machine, for example, and the shield suspended from the frame body is arranged on the side of the welding work part. Is done. Therefore, when the direction where a welding operation part exists from the outer side of the shield is viewed, the welding application part is covered with the shield, so that light from welding can be shielded. Since the shield is suspended from above, it is not necessary to arrange the shield directly on the installation surface. As a result, the shield can be arranged so as to float from the ground, so that the influence of the shape of the ground can be eliminated, and even if the ground at the welding site is not flat, the shield is covered by the shield. , Can shield light from welding. There is no need to support the shield by an operator.

The frame body is rotatably supported with respect to the hooked portion, and extends in a direction intersecting with the longitudinal directions of the plurality of arm portions extending radially from the hooked portion. And an interval holding body capable of connecting a plurality of arm portions, wherein the interval holding body is rotatably joined to one arm portion and the other end to the other arm portion. The structure joined so that attachment or detachment is possible may be sufficient. According to the welding light shielding tool of this configuration, when using the welding light shielding tool, it is possible to install a shielding body by spreading a plurality of arms, and when not using the welding light shielding tool, The arms can be closed and arranged in parallel. In addition, since it is provided with an interval holding body, one end is rotatably joined to one arm portion and the other end is detachable from the other arm portion, the interval holding body is used when the shield is used. Therefore, it is possible to maintain the interval between the adjacent arm portions, and to secure the installation space for the shield. When the shield is not used, it is possible to release the connection of the gap holder and close the arm portion to make it compact so that the welding light shield can be easily stored and transported.
Moreover, the welding light shielding tool of the present invention is a welding light shielding tool that shields light from welding, and includes a frame body having a hooked portion, and a welding work section that is suspended from the frame body and welded. And a shielding body that shields light generated by welding, and the frame body is rotatably supported with respect to the latched portion and extends radially from the latched portion. And an interval holding body that extends in a direction intersecting with the longitudinal direction of the plurality of arm portions, and that can connect the plurality of arm portions to each other. It is joined to an arm part so that rotation is possible, and the other end is joined to other arm parts so that attachment or detachment is possible.

  In addition, the shield is in the form of a sheet and is suspended from the tip portions of the plurality of arm portions, and the width portion which is the horizontal length on the side surface of the shield body is the separation distance between the tip portions of the adjacent arm portions. Correspondingly, a rod body insertion portion for holding the rod body is formed in the lower part of the shield, and the rod body insertion portion has a rod body having a length corresponding to the separation distance between the tips of adjacent arm portions. May be inserted. According to this configuration, since the rod is inserted into the rod insertion portion provided at the lower portion of the shield, the rod acts as a weight, the shield is pulled downward, and the sheet-like shield The shape of can be stabilized. Moreover, since this rod is arrange | positioned along a shielding body and the shape of a shielding body is hold | maintained, a deformation | transformation of a shielding body is suppressed.

Further, the pile welding method of the present invention is a pile welding method in which another pile is welded to the upper end of a pile whose lower side is buried in the ground and connected in the longitudinal direction, and the hooked portion is Prepare a welding light shielding tool comprising a frame body provided and a shielding body that is suspended from the frame body and shields light generated by welding, and hooks the hooked portion to the hooking portion of the pile driver, In the process of suspending the frame body and placing the shield on the side of the weld construction part at the upper end of the pile, and welding the other pile to the upper end of the pile in the area partitioned by the shield And connecting them together.

  In this pile welding method, the frame body can be suspended from above by hooking the hooked part to the hooking part of the pile driving machine, and the shield suspended from the frame body is placed on the side of the welding part. Can be arranged. And in the area | region divided by this shielding body, another pile can be welded and connected with respect to the upper end part of the pile embedded in the ground. Therefore, when the direction where a welding operation part exists from the outer side of the shield is viewed, the welding application part is covered with the shield, so that light from welding can be shielded. Since the shield is suspended from above, it is not necessary to arrange the shield directly on the installation surface. As a result, the shield can be arranged so as to float from the ground, so that the influence of the shape of the ground can be eliminated, and even if the ground at the welding site is not flat, the shield is covered by the shield. , Can shield light from welding. There is no need to support the shield by an operator.

  According to the welding light shielding tool of the present invention, it is possible to install the shielding body above the installation surface which is not flat, and it is possible to shield the light caused by welding.

It is a side view which shows the state by which the welding light shielding tool of one Embodiment of this invention was suspended and installed in the latching part of the pile driving machine. It is a side view which expands and shows the frame body of a welding light shielding tool. It is a perspective view which shows the state which extended the frame body of the welding light shielding tool. It is a side view which shows a welding light shielding tool. It is sectional drawing which follows the horizontal surface of a steel pipe pile and a shielding sheet. It is a perspective view which shows the welding light shielding tool of the folded state.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same part or an equivalent part, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 1, the welding light shield 1 is arranged around a steel pipe pile 2 when a long steel pipe pile 2 is welded and joined together, and defines a region where welding work is performed. is there. For example, when building a building such as a house, a plurality of steel pipe piles 2 are driven into the ground to reinforce the ground. The steel pipe pile 2 is supported by a pile driving machine (heavy machine) 3 and buried in the ground.

  The pile driver 3 includes a vehicle body 3b provided with a driver's seat 3a, and a traveling device 3c capable of traveling on the ground is provided below the vehicle body 3b. The vehicle body 3b can turn with respect to the traveling device 3c. Therefore, the pile driving machine 3 can move or turn according to the position of the steel pipe pile 2, that is, the position where the welding operation is performed. The vehicle body 3b has a rod 3d extending in the vertical direction. The rod 3d is provided with a support portion 3e that moves up and down along the longitudinal direction of the rod 3d and supports the steel pipe pile 2. Yes.

  Further, the pile driving machine 3 is provided with a drive unit 3f for raising and lowering the support unit 3e. The drive unit 3f includes, for example, a hydraulic cylinder, and the support unit 3e can be moved by extending and contracting the hydraulic cylinder. The support part 3e supports the upper end part of the steel pipe pile 2, can apply the downward force from upper direction, and can embed the steel pipe pile 2 in the ground. Moreover, the support part 3e can support the steel pipe pile 2, and can be lifted upwards. When welding another steel pipe pile 2 to the steel pipe pile 2 embedded in the ground, another steel pipe pile 2 is lifted by a pile driving machine 3 and most of the steel pipe pile 2 is buried in the ground. 2 above.

  A drum 3h around which a wire 3g is wound is supported at the upper end of the rod 3d. Further, a guide portion 3i is provided at the upper end portion of the rod 3d. The guide portion 3i includes a pulley at the tip portion and projects forward from the rod 3d. The wire 3g fed out from the drum 3h hangs down via a pulley of a guide portion 3i disposed in front. A hook (holding portion) 4 is provided at the lower end of the wire 3g. The pile driving machine 3 can raise and lower the hook 4 by rotationally driving the drum 3h. In addition, the hook 4, the wire 3g, etc. are conventionally provided in the pile driving machine 3 in order to lift and move the steel pipe pile 2 and other heavy objects.

  As shown in FIGS. 2 and 3, the welding light shielding tool 1 includes a frame body 6 including a ring portion (a hooked portion) 5 that is locked to the hook 4 of the pile driving machine 3. The frame body 6 includes a cross-shaped connector 8 (see FIG. 6) that connects a plurality of arm portions (arm portions) 7. A cylindrical boss portion 9 protruding upward is provided at the center of the connector 8, and the lower side of the ring portion 5 is supported by the boss portion 9.

  The connecting tool 8 is provided with a protruding portion 8a protruding from the center in four directions, and the base end portion 7a of the arm portion 7 is pin-connected to the distal end portion of the protruding portion 8a. The arm portion 7 is supported so as to be swingable with respect to the connector 8. The arm part 7 is a rod-shaped member, for example, a cylindrical member.

  A mounting bracket 11 that rotatably supports the rod-shaped spacing member 10 is attached to an intermediate portion in the longitudinal direction of the arm portion 7. The mounting bracket 11 includes a cylindrical portion 11a attached to the arm portion 7, and the cylindrical portion 11a is provided with protruding pieces 11b and 11c protruding outward in the radial direction. The cylinder portion 11a is fitted to the outside of the arm portion 7, and the protruding pieces 11b and 11c protrude toward the adjacent arm portion 7 side.

  The protruding pieces 11b and 11c protrude to the side of the arm portion 7 adjacent in different directions. The base end part 10a of the space | interval holding body 10 is rotatably pin-bonded to one protrusion piece 11b. The interval holder 10 is formed of a flat plate, and the length of the interval holder 10 in the longitudinal direction corresponds to the interval between the intermediate portions of the adjacent arm portions 7. As shown in FIG. 2, the interval between the intermediate portions corresponds to the distance of the mounting bracket 11 when the arm portion 7 is spread out.

  A bow bolt 12 is attached to the distal end portion 10 b of the interval holder 10. Further, the other protruding piece 11c of the mounting bracket 11 is provided with a notch portion 11d (see FIG. 3) to which the butterfly bolt 12 is locked. The notch portion 11d is inserted into the notch portion 11d, and the spacing bolt 10 is connected to the adjacent arm portions 7 so that the spacing between the arm portions 7 can be maintained. The connection by the space | interval holder 10 can be cancelled | released by removing the butterfly bolt 12 of the space | interval holder 10 from the protrusion piece 11c.

  A locking hook 14 for locking the shielding sheet 13 is provided at the distal end 7 b of the arm portion 7. The locking hook 14 protrudes in the longitudinal direction of the arm portion 7 and is curved so as to form, for example, a U shape.

  The shielding sheet 13 is a sheet that shields light from welding. The material of the shielding sheet 13 is, for example, flameproof soft vinyl chloride. The shielding sheet 13 should just be what has suppressed the permeation | transmission of the light of welding and has a flame retardance. As shown in FIGS. 2 and 4, the shielding sheet 13 is provided with a plurality of holes 13 a that are hooked on the locking hooks 14 of the arm portion 7. The shielding sheet 13 has a size capable of covering three directions among the four directions on the side of the steel pipe pile 2. The plurality of hole portions 13 a are arranged at the upper end portion of the shielding sheet 13 so as to correspond to the intervals between the locking hooks 14 of the arm portion 7.

  The shielding sheet 13 is locked to the locking hook 14 and is suspended. In this suspended state, as shown in FIG. 4, the shielding sheet 13 has a rectangular shape when viewed from the side. A bag-like rod insertion portion 15 that is continuous in the horizontal direction in the figure is formed at the middle portion and the lower end portion in the vertical direction of the shielding sheet 13. A rod body 16 having a length corresponding to the width of the shielding sheet 13 (the length in the horizontal direction in the figure) is inserted into the rod body insertion portion 15. As the rod body 16, a round bar steel material can be used. The rod 16 functions as a weight and functions as a member for suppressing deformation of the shielding sheet 13.

  The rod insertion portion 15 at the lower end is formed into a bag shape by the shielding sheet 13 being folded back from the lower end and stitched together. The intermediate rod body insertion portion 15 is formed in a bag shape by stitching together sheet pieces having a size corresponding to the length and outer diameter of the rod body 16.

  Next, a method for welding another steel pipe pile 2 to a steel pipe pile embedded in the ground will be described. As shown in FIG. 1, the first steel pipe pile 2 is embedded in the ground using a pile driving machine 3. The embedding of the first steel pipe pile 2 is stopped in a state where the upper end portion is left and most of the steel pipe pile 2 is embedded in the ground.

  Next, the second steel pipe pile 2 is lifted upward by the pile driving machine 3 and disposed above the first steel pipe pile 2. Specifically, the upper end surface of the first steel pipe pile 2 and the lower end surface of the second steel pipe pile 2 are made to face each other and approach each other.

  Next, the welding light shielding tool 1 is prepared, the plurality of arm portions 7 are rotated and arranged radially, the interval holding body 10 is rotated, and the distal end portion 10b of the interval holding body 10 is adjacent to the arm. It is connected to the mounting bracket 11 of the part 7. Specifically, the butterfly bolt 12 at the tip 10b of the spacing member 10 is fitted into the notch 11d of the protruding piece 11c of the mounting bracket 11, and the butterfly bolt 12 is fastened and fixed. The plurality of arm portions 7 are connected to each other by using the plurality of interval holding bodies 10, the interval between the adjacent arm portions 7 is held, and the frame body 6 is assembled.

  Next, the ring portion 5 of the welding light shield 1 is locked to the hook 4 of the pile driving machine 3, the hook 4 is lifted upward, and the frame body 6 of the welding light shield 1 is lifted. The hole 13a of the shielding sheet 13 is engaged with the locking hook 14 of the arm portion 7 of the frame body 6 that is lifted, and the shielding sheet 13 is attached to the frame body 6 and suspended. In the shielding sheet 13, the shielding sheet 13 is disposed so as to form three of the four side surfaces of the welding light shielding tool 1, and the opening 17 through which the worker enters and exits the remaining one side surface (see FIG. 5). And

  Next, the hook 4 is raised to lift the welding light shield 1 and moved to the vicinity of the steel pipe pile 2. Specifically, the opening 17 of the welding light shield 1 is arranged toward the vehicle body 3 b of the pile driving machine 3. At this time, the steel pipe pile 2 is arrange | positioned between the two arm parts 7 by the side of the opening part 17, for example. Moreover, the arm part 7 is approached and fixed with respect to the steel pipe pile 2 using a strip | belt-shaped band member.

  Next, the rod body 16 is inserted into the rod body insertion portion 15 formed at the lower end portion and the middle portion of the shielding sheet 13. Due to the weight of the rod 16, a downward force is applied to the shielding sheet 13 to pull the shielding sheet 13 downward appropriately. Thereby, the change of the position and shape of the shielding sheet 13 is prevented.

  In a state where the welding light shielding tool 1 is lifted and disposed in the vicinity of the steel pipe pile 2, the lower end portion of the shielding sheet 13 is disposed in a state of being separated upward from the ground. Moreover, the shielding sheet 13 is arrange | positioned around the welding construction part (the part to which welding is performed, refer FIG. 1) 18 of the upper end part of the 1st steel pipe pile 2 at this time. The welding construction part 18 is in a state covered with the shielding sheet 13 from three directions, and the remaining one direction is hidden by the vehicle body 3 b of the pile driving machine 3. The circumference of the welding construction part 18 is sectioned by the shielding sheet 13, and a work area where an operator can enter and perform welding work is secured in the sectioned inner area. Moreover, the welding construction part 18 is in a state invisible from the partitioned outside.

  Next, welding is performed by an operator, the upper end portion of the first steel pipe pile 2 and the lower end portion of the second steel pipe pile 2 are joined, and the two steel pipe piles 2 are connected vertically and joined together. In this welding operation, light due to welding is shielded by the shielding sheet 13 and cannot be seen from the outside of the shielding sheet 13. Moreover, since the welding construction part 18 is also concealed by the vehicle body 3b of the pile driving machine 3 on the opening 17 side of the welding light shielding tool 1, light from welding is not visible.

  After the welding operation is finished, the hook 4 is lowered, the welding light shield 1 is lowered, the shielding sheet 13 is removed from the frame body 6, the butterfly bolt 12 at the tip 10b of the spacing body 10 is loosened, and the spacing is maintained. The connection state between the tip 10b of the body 10 and the protruding piece 11c is released.

  The interval holding body 10 is rotated so that the interval holding body 10 is arranged along the arm portion 7, and the plurality of arm portions 7 are rotated and arranged in parallel to make the welding light shielding tool 1 compact. To summarize. The welding light shielding tool 1 is used again when another steel pipe pile 2 is welded. The steel pipe pile 2 joined up and down is further embedded in the ground by a pile driving machine 3.

  In the welding light shielding tool 1 of this embodiment as described above, the ring body 5 can be hooked on the hook 4 of the pile driving machine 3 and the frame body 6 can be suspended from above, and the shielding sheet suspended from the frame body 6 13 can be arranged on the side of the welding construction part 18. Therefore, when viewing the direction in which the welded portion 18 exists from the outside of the shielding sheet 13, the welded portion 18 is covered with the shielding sheet 13, so that light from welding can be shielded. Since the shielding sheet 13 is suspended from above, it is not necessary to arrange the shielding sheet 13 directly on the installation surface. Thereby, since the shielding sheet 13 can be arranged floating from the ground, it is possible to eliminate the influence of the shape of the ground, and even if the ground at the welding site is not flat, the shielding sheet 13 can be used for welding. 18 can be covered and the light by welding can be shielded. There is no need to support the shielding sheet 13 by an operator.

  In addition, the welding light shielding tool 1 includes a plurality of arm portions 7 that extend radially around the connection tool 8, and the plurality of arm parts 7 are rotatable with respect to the connection tool 8. 1 is used, the plurality of arm portions 7 can be expanded and the shielding sheet 13 can be installed. When the welding light shield 1 is not used, the plurality of arm portions 7 are closed and arranged in parallel. Can be summarized.

  Further, a rod insertion portion 15 that holds the rod 16 is formed in the lower part of the shielding sheet 13, and the rod insertion portion 15 has a length corresponding to the separation distance between the distal end portions 7 b of the adjacent arm portions 7. The rod body 16 is inserted. Thereby, since the rod 16 acts as a weight, the shielding sheet 13 is pulled downward, and the shape of the shielding sheet 13 can be stabilized. Further, the shape of the shielding sheet 13 can be held by the rod body 16.

  Further, in the welding light shielding tool 1, the base end portion 10 a of the interval holding body 10 is rotatably joined to one arm portion 7, and the distal end portion 10 b of the interval holding body 10 is connected to the other arm portion 7. Therefore, when the shielding sheet 13 is used, the spacing between the adjacent arm portions 7 can be maintained by the spacing holder 10, and the installation space for the shielding sheet 13 can be secured. In addition, when the shielding sheet 13 is not used, the connection of the gap holding body 10 can be released and the arm portion 7 can be closed to be compact, and the welding light shielding tool 1 can be easily stored and transferred. be able to.

  FIG. 6 shows a state in which the welding light shielding tool 1 is folded to be compact. The plurality of arm portions 7 are closed and arranged in parallel, the spacing member 10 is arranged in parallel along the longitudinal direction of the arm portion 7, and the welding light shield 1 is gathered in a compact manner. The plurality of arm portions 7 may be configured such that a plurality of (two) members are pin-bonded and bendable. In the configuration including the arm portion 7, when the welding light shielding tool 1 is not used, the arm portion 7 can be bent and shortened in the longitudinal direction to be compact. Further, the arm portion 7 is constituted by a plurality (two) of cylinders, and the second cylinder can be accommodated in the first cylinder so that the second cylinder can be pulled out during use. Thus, the arm portion 7 can be shortened by lengthening the arm portion 7 and pushing the second cylindrical body into the first cylindrical body when not in use. In this way, the welding light shielding tool 1 can be put together in a compact manner.

  The present invention is not limited to the above-described embodiments, and various modifications as described below are possible without departing from the gist of the present invention.

  In the above embodiment, the welding light shield 1 is suspended from the upper side by hooking the ring portion of the welding light shield 1 on the hook 4 of the pile driving machine 3, but the welding light shield 1 is suspended. The heavy machine to be lowered is not limited to the pile driving machine 3, and can be used by being suspended from other heavy machines such as a crane and an excavating machine. Moreover, you may use it by hanging a to-be-latched part on other structures other than a heavy machine, and suspending a welding light shielding tool from upper direction.

  Moreover, in the said embodiment, although the long steel pipe pile 2 is tied up and down by welding, when welding other metal members with respect to the steel pipe pile 2 embedded in the ground, welding light The shield 1 may be used. For example, the welding light shielding tool 1 can be used when welding other metal members such as pipes and columns. Moreover, when welding the member extended in an up-down direction, you may use the welding light shielding tool 1 when welding the member extended in a horizontal direction, and it extends in another direction. You may use when welding the member to do. The welding may be arc welding, gas welding, or other welding. Moreover, you may use the welding light shielding tool 1 when shielding the light by fusing.

  In the above embodiment, the shielding sheet 13 covers the three directions (three surfaces) around the welded portion. However, the shielding sheet 13 may cover only one surface, or two adjacent surfaces. Or covering all four sides.

  Moreover, in the said embodiment, although the shielding body is formed in the sheet form, you may form a shielding body with a plate-shaped wall body, for example.

  Moreover, in the said embodiment, although the arm part 7 is made rotatable, the arm part 7 may be joined by welding etc., and the structure which cannot move may be sufficient. In the case of such a configuration, it is not necessary to assemble the frame body 6 at the site, and the installation at the site can be facilitated.

  DESCRIPTION OF SYMBOLS 1 ... Welding light shield, 2 ... Steel pipe pile, 3 ... Pile driver (heavy machine), 4 ... Hook (hanging part of heavy machine), 5 ... Ring part (hanging part), 6 ... Frame body, 7 ... Arm part (arm part), 10 ... spacing holder, 13 ... shielding sheet (shielding body), 15 ... rod body insertion part, 16 ... rod body, 18 ... welding construction part.

Claims (5)

A welding light shield that shields light from welding,
A frame body with a hooked portion;
A shield that is suspended from the frame body and is arranged on the side of a welding construction portion where welding is performed, and shields light generated by the welding , and
The said shielding body is a welding light shielding tool arrange | positioned so that the said welding construction part may be surrounded except the opening part for an operator to enter / exit . The frame body is rotatably supported with respect to the hooked portion, and extends in a direction intersecting with a longitudinal direction of the arm portions and a plurality of arm portions extending radially from the hooked portion. And an interval holding body capable of connecting the plurality of arms, and further comprising:
2. The welding light according to claim 1, wherein one end of the spacing member is rotatably joined to the one arm portion, and the other end is detachably joined to the other arm portion. Shield. A welding light shield that shields light from welding,
A frame body with a hooked portion;
A shield that is suspended from the frame body and is arranged on the side of a welding construction portion where welding is performed, and shields light generated by the welding, and
The frame body is rotatably supported with respect to the hooked portion, and extends in a direction intersecting with a longitudinal direction of the arm portions and a plurality of arm portions extending radially from the hooked portion. And an interval holding body capable of connecting the plurality of arms, and further comprising:
The spacing holder is a welding light shielding tool having one end rotatably joined to one arm and the other end joined removably to the other arm . The shield has a sheet shape and is suspended from the tip portions of the plurality of arms,
The width that is the length in the horizontal direction on the side surface of the shield corresponds to the separation distance between the tips of the adjacent arm portions,
A rod insertion part for holding the rod is formed at the bottom of the shield,
The welding light shielding tool according to claim 2 or 3 , wherein the rod body having a length corresponding to the separation distance between the distal end portions of the adjacent arm portions is inserted into the rod body insertion portion. It is a welding method of a pile in which the lower side is welded to the upper end of the pile embedded in the ground and connected to the longitudinal direction by welding another pile,
A welding light shielding tool including a frame body provided with a hooked portion and a shield body that is suspended from the frame body and shields light generated by welding is prepared, and the hooked portion of the pile driving machine is provided with the covered portion. Hooking a latching part, suspending the frame body, and placing the shielding body on the side of the welding construction part at the upper end of the pile;
A method of welding piles, including a step of welding and joining the other piles to an upper end portion of the piles in an area defined by the shield.

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