Abstract: A shape sensor is provided for acquiring a shape profile along an extension direction of an existing weld bead, and a control unit includes a welding information acquisition unit for acquiring welding information during formation of an adjacent weld bead when forming the adjacent weld bead at a position adjacent to the existing weld bead, and a defect candidate extraction unit for determining an angle characteristic portion having a base angle equal to or greater than a threshold in the existing weld bead based on the shape profile, determining a welding characteristic portion of the welding information based on the welding information, and extracting the welding characteristic portion corresponding to the angle characteristic portion as a defect candidate by associating the welding characteristic portion with the angle characteristic portion.

Abstract: A pressure vessel includes a vessel body, a first rib and a second rib. The vessel body includes a first surface and a second surface. The first rib projects in a second direction from the first surface and extends in a first direction. The second rib provided in series with the first rib, projects in the first direction from the second surface, and extends in the second direction. A width in the second direction of the internal space is smaller than a width in the first direction of the internal space. A maximum value of a projection amount of the second rib from the second surface to the outside of the vessel body in the first direction is smaller than the maximum value of a projection amount of the first rib from the first surface to the outside of the vessel body in the second direction.

Abstract: A pressure vessel, comprising: a vessel body having a rectangular parallelepiped shape for containing high pressure gas; a dividing wall in the form of a plate and disposed in the vessel body; and a plurality of ribs disposed on an outer surface of the vessel body. The vessel body includes: a top wall having a rectangular shape; a bottom wall having a rectangular shape and facing the top wall; and a surrounding wall joining a peripheral edge of the top wall and a peripheral edge of the bottom wall. The dividing wall is disposed in the vessel body to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body. Each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall.

Abstract: An upper turning body mounted on a lower body for a crane includes a turning frame mounted on the lower body to turn freely, and a boom provided to the turning frame to be raised and lowered freely. The turning frame includes a pair of attachment brackets to which a base end section of the boom is attached such that the boom is free to be raised and lowered, and a frame body to which the pair of attachment brackets are provided with an interval in a left-right direction of the upper turning body. The frame body is formed of a plurality of divided frames arranged side by side in the left-right direction of the upper turning body, adjacent divided frames of the plurality of divided frames being separably joined to each other.

Abstract: An upper body includes a bearing seat surface that is fixed by a bearing bolt to the upper surface of a swing bearing, a swing frame that includes an intersecting side plate intersecting the bearing seat surface and is fixed to the bearing seat surface, and a force dispersing member. The force dispersing member includes at least one vertical plate extending in the up-down direction. The at least one vertical plate is fixed to a region of the bearing seat surface other than a force dispersion target region.

Abstract: A pressure vessel includes a vessel body, a first rib and a second rib. The vessel body includes a first surface and a second surface. The first rib projects in a second direction from the first surface and extends in a first direction. The second rib provided in series with the first rib, projects in the first direction from the second surface, and extends in the second direction. A width in the second direction of the internal space is smaller than a width in the first direction of the internal space. A maximum value of a projection amount of the second rib from the second surface to the outside of the vessel body in the first direction is smaller than the maximum value of a projection amount of the first rib from the first surface to the outside of the vessel body in the second direction.

Abstract: An upper turning body mounted on a lower body for a crane includes a turning frame mounted on the lower body to turn freely and a boom provided to the turning frame to be raised and lowered freely. The turning frame includes a pair of attachment brackets to which a base end section of the boom is attached such that the boom is free to be raised and lowered, and a main frame to which the pair of attachment brackets are provided with an interval in the left-right direction of the upper turning body. The dimension of the main frame in the front-rear direction of the upper turning body orthogonal to the left-right direction is smaller than the dimension of the main frame in the left-right direction.

Abstract: An upper turning body mounted on a lower body for a crane includes a turning frame mounted on the lower body to turn freely, and a boom provided to the turning frame to be raised and lowered freely. The turning frame includes a pair of attachment brackets to which a base end section of the boom is attached such that the boom is free to be raised and lowered, and a frame body to which the pair of attachment brackets are provided with an interval in a left-right direction of the upper turning body. The frame body is formed of a plurality of divided frames arranged side by side in the left-right direction of the upper turning body, adjacent divided frames of the plurality of divided frames being separably joined to each other.

Abstract: A gas cooler includes a pair of seal plates and a pair of first support ribs. The individual seal plate has a stepped surface which extends in a direction that a cooling portion is inserted into a casing. The individual first support rib supports the stepped surface. With the configuration where the stepped surface is supported by the first support rib, the inside of the casing is partitioned into an upstream-side space communicated with an introducing port and a downstream-side space communicated with a discharging port.

Abstract: An upper body includes a bearing seat surface that is fixed by a bearing bolt to the upper surface of a swing bearing, a swing frame that includes an intersecting side plate intersecting the bearing seat surface and is fixed to the bearing seat surface, and a force dispersing member. The force dispersing member includes at least one vertical plate extending in the up-down direction. The at least one vertical plate is fixed to a region of the bearing seat surface other than a force dispersion target region.

Abstract: A gas cooler includes a pair of seal plates and a pair of first support ribs. The individual seal plate has a stepped surface which extends in a direction that a cooling portion is inserted into a casing. The individual first support rib supports the stepped surface. With the configuration where the stepped surface is supported by the first support rib, the inside of the casing is partitioned into an upstream-side space communicated with an introducing port and a downstream-side space communicated with a discharging port.

Abstract: A cuboid pressure vessel comprises a top wall, a bottom wall, and an external wall. The external wall comprises a main body including a first side wall having a first opening, and a second side wall having a second opening; a first lid secured to the first side wall so as to occlude the first opening; and a second lid secured to the second side wall so as to occlude the second opening. The bottom wall comprises a main body; and a reinforcement rib provided in an upright manner on the outer surface of the main body. The reinforcement rib is provided in an upright manner on the outer surface of an area, within the main body, which contains a central section of the main body, and which excludes four corner sections, a region adjacent to the first lid and a region adjacent to the second lid.

Abstract: A pressure vessel, comprising: a vessel body having a rectangular parallelepiped shape for containing high pressure gas; a dividing wall in the form of a plate and disposed in the vessel body; and a plurality of ribs disposed on an outer surface of the vessel body. The vessel body includes: a top wall having a rectangular shape; a bottom wall having a rectangular shape and facing the top wall; and a surrounding wall joining a peripheral edge of the top wall and a peripheral edge of the bottom wall. The dividing wall is disposed in the vessel body to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body. Each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall.

Abstract: An upper turning body mounted on a lower body for a crane includes a turning frame mounted on the lower body to turn freely and a boom provided to the turning frame to be raised and lowered freely. The turning frame includes a pair of attachment brackets to which a base end section of the boom is attached such that the boom is free to be raised and lowered, and a main frame to which the pair of attachment brackets are provided with an interval in the left-right direction of the upper turning body. The dimension of the main frame in the front-rear direction of the upper turning body orthogonal to the left-right direction is smaller than the dimension of the main frame in the left-right direction.

Abstract: Provided is a pressure vessel having a vessel main body and a partition wall. The vessel main body is provided with a top wall, a bottom wall, and a peripheral wall. The top wall is provided with: a top-wall main body; a top-wall protruded part having a shape which protrudes externally from an outer surface of the top-wall main body; top-wall first-chamber-side ribs; and top-wall second-chamber-side ribs. The bottom wall is provided with: a bottom-wall main body; a bottom-wall protruded part having a shape which protrudes externally from an outer surface of the bottom-wall main body; bottom-wall first-chamber-side ribs; and bottom-wall second-chamber-side ribs. The top-wall first-chamber-side ribs and the top-wall second-chamber-side ribs each have a shape which connects with the top-wall protruded part. The bottom-wall first-chamber-side ribs and the bottom-wall second-chamber-side ribs each have a shape which connects with the bottom-wall protruded part.

Abstract: In a mold designing, a deformation amount of a casting from a solidification start time to a cooling end time may be obtained by deformation analysis software, and a deformation amount of a mold from a pouring time to the solidification start time may be obtained by deformation analysis software. When a cavity shape is designed based on the obtained deformation amounts of the mold and the casting, the precision of a near net shape may be further improved by reflecting the mold cavity shape at the solidification start time to the mold design, and a lack in dimension of a casting product after the casting process may be prevented.

Abstract: Provided is a pressure vessel having a vessel main body and a partition wall. The vessel main body is provided with a top wall, a bottom wall, and a peripheral wall. The top wall is provided with: a top-wall main body; a top-wall protruded part having a shape which protrudes externally from an outer surface of the top-wall main body; top-wall first-chamber-side ribs; and top-wall second-chamber-side ribs. The bottom wall is provided with: a bottom-wall main body; a bottom-wall protruded part having a shape which protrudes externally from an outer surface of the bottom-wall main body; bottom-wall first-chamber-side ribs; and bottom-wall second-chamber-side ribs. The top-wall first-chamber-side ribs and the top-wall second-chamber-side ribs each have a shape which connects with the top-wall protruded part. The bottom-wall first-chamber-side ribs and the bottom-wall second-chamber-side ribs each have a shape which connects with the bottom-wall protruded part.

Abstract: A cuboid pressure vessel comprises a top wall, a bottom wall, and an external wall. The external wall comprises a main body including a first side wall having a first opening, and a second side wall having a second opening; a first lid secured to the first side wall so as to occlude the first opening; and a second lid secured to the second side wall so as to occlude the second opening. The bottom wall comprises a main body; and a reinforcement rib provided in an upright manner on the outer surface of the main body. The reinforcement rib is provided in an upright manner on the outer surface of an area, within the main body, which contains a central section of the main body, and which excludes four corner sections, a region adjacent to the first lid and a region adjacent to the second lid.

Abstract: A pressure vessel having reduced weight while satisfying required design conditions has upper wall first and second ribs, upper curved surface portion first and second ribs, a bottom wall first rib with a bottom wall second rib formed on an outer surface of a bottom wall, lower curved surface portion first and second ribs, and a side wall first rib with a side wall second rib on an outer surface of a side wall. The center upper wall first rib has a center upper wall first rib center portion, a center upper wall first rib continuous portion, and a center upper wall first rib thin portion. The center bottom wall first rib has a center bottom wall first rib center portion, a center bottom wall first rib continuous portion, and a center bottom wall first rib thin portion.

Abstract: A pressure vessel having reduced weight while satisfying required design conditions has polygonal upper and bottom walls, a side wall provided therebetween, an upper curved surface portion for connecting the upper and side walls, and a lower curved surface portion for connecting the bottom and side walls. An upper wall center rib includes an upper wall center part, and upper wall annular ribs respectively connecting substantially center parts of the upper wall and surrounding the upper wall center rib. Ribs are formed substantially centrally in the upper curved surface portion. A bottom wall center rib includes a center part in the bottom wall. Bottom wall annular ribs are formed connecting the bottom wall and surrounding the bottom wall center rib. Lower curved surface portion ribs are formed substantially centrally in the lower curved surface portion, and main surface ribs are formed substantially centrally in the side wall.