JP2018025003A - Underground steel column construction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underground steel column construction device capable of improving workability and safety.SOLUTION: Pliers 3 are substantially cross-shaped while having plier arm parts 31 extending in four directions, and an underground steel column 101 is connected to a central part of the pliers. A cradle 2 comprises: a lower truck 21 which is disposed on a cradle base 26 freely movable in a first horizontal direction and capable of adjusting a fixing position; an upper truck 22 which is disposed at an upper side of the lower truck 21, freely movable in a second horizontal direction that is orthogonal with the first horizontal direction, and capable of adjusting a fixing position; a rotary table 23 which is disposed at an upper side of the upper truck 22, freely rotatable and capable of adjusting a fixing position; multiple support jacks 24 disposed on the rotary table 23 and supporting end portions 31a of the plier arm parts 31 of the pliers 3; and multiple guide arms 25 disposed on the rotary table 23 so as to freely rise up and fall down and guide the underground steel column 101. The guide arms 25 ate disposed at an inner peripheral side of the support jacks 24 while facing the support jacks 24.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a structural pillar erection device for constructing a structural pillar in a reverse driving method or the like.

  The reverse driving method is to build a structural pillar on the ground and perform the superstructure at the same time as performing the rooting work of the underground part, and it is necessary to construct the structural pillar with high accuracy. A structural pillar erection device is used (for example, refer to Patent Document 1). This true pillar erection device is composed of a gantry and a Yatco, and the Yatco has a cross-shaped inner base disposed in an annular outer frame part, and a columnar connecting the true pillars at the center of the inner base Can be connected.

  The gantry is movable in the first horizontal direction and can be adjusted in a fixed position. The gantry is disposed above the lower carriage and is movable in a second horizontal direction perpendicular to the first horizontal direction and fixed in the fixed position. An upper carriage that can be adjusted, and a turntable that is disposed above the upper carriage and that can rotate 360 degrees and that can be adjusted in a fixed position. Further, the turntable is provided with a support jack for adjusting the height by placing the outer frame portion of the Yatco, and a guide arm for guiding the structural pillar.

  Then, in a state where the column is connected to the Yatco and the frame pillar is connected to the column, the column is suspended by a crane and placed in the excavation hole. Next, with the guide arm in the tilted position, move and rotate the lower carriage, upper carriage, and turntable to adjust the position of the column and adjust the height of each support jack. Place it on the jack for use and set it on the base. As a result, the structural pillar is built at a predetermined position and height.

Japanese Patent Publication No.59-42143

  By the way, after positioning the frame pillar as described above, the ready-mixed concrete is placed in the excavation hole. In that case, a tremely pipe for flowing the ready-mixed concrete is passed through the built-up column building device. Must be placed in the borehole. However, in the conventional erected column building device, the Yatco has a structure in which a cross-shaped inner base is disposed in an annular outer frame (a cross-shaped structure in a circle). There was a risk of sacrificing safety.

  That is, as shown in FIGS. 23 and 24, when inserting and arranging the tremy tube 904 in the gap 901 a between the regular octagonal outer frame portion 902 and the inner base portion 903 of the YATCO 901, the worker M moves the lower cart 905. I will work on the board. However, in this case, it is difficult to work because the outer frame portion 902 obstructs the work, which places a heavy burden on the operator. For this reason, it is conceivable that the worker M rides on the outer frame portion 902 or the inner base portion 903 of the YATCO 901 to perform the work. However, since the scaffolding is narrow and high, there is a risk of impairing safety.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a structural pillar erection device capable of improving workability and safety.

  In order to achieve the above-mentioned object, the invention according to claim 1 is composed of a gantry and a yatco, and the yatco is substantially cross-shaped having a yatco arm portion extending in four directions, and a construction column is connected to the center portion. The gantry is disposed on the gantry base and is movable in a first horizontal direction and can be adjusted in a fixed position. The trolley is disposed above the lower trolley and is perpendicular to the first horizontal direction. An upper carriage that is movable in the horizontal direction and that can be adjusted in a fixed position; a rotary table that is disposed above the upper carriage and that is rotatable and that can be adjusted in a fixed position; and A plurality of support jacks that support end portions of the Yatco arm part; and a plurality of guide arms that are arranged on the rotary base so as to be able to be tilted up and down, and that guide the frame pillar. The guide arm is used for the support. The jack for the bearing facing the jack Are disposed on the inner peripheral side of it is 構真 column denominated included and wherein the.

  The invention according to claim 2 is the erected pillar erection device according to claim 1, wherein a work table portion protruding upward is provided on the upper surface of the rotary base where the Yatco arm portion of the Yatco is not located. The height of the work table is set to be higher than the height of the guide arm in the tilted state.

  The invention according to claim 3 is the structural pillar erection device according to claim 1 or 2, wherein a Yatco reinforcing portion extending upward along the Yatco arm portion is provided on the upper surface of the Yatco. It is characterized by that.

  According to a fourth aspect of the present invention, in the structural pillar erection device according to the first to third aspects, the width of at least the central portion of the guide arm is set so as not to protrude from the Yatco arm portion of the Yatco. It is characterized by that.

  According to the first aspect of the present invention, there is a space where the yatco is not located above the turntable in a state where the yatco is substantially cross-shaped and supported by the support jack of the gantry. That is, a wide work space is secured on the turntable, and an operator can work stably and safely on the lower carriage. For example, when a tremmy tube is inserted and arranged between Yatco arms, an operator can get on the lower carriage and work in a wide work space, so that workability and safety can be improved.

  Moreover, the guide arm is disposed on the inner peripheral side of the support jack so as to face the support jack. That is, since both the guide arm and the supporting jack are arranged along the YATKO arm portion, it is possible to secure a wider working space on the turntable.

  According to the second aspect of the present invention, since the work table portion is provided on the upper surface of the turntable where the Yatko arm portion is not positioned, it is possible to improve workability and the like using this work table portion. It becomes possible. Moreover, since the height of the work table is set to be higher than the height of the guide arm in the tilted state (the state in which the true column is guided), for example, a bar for fixing the tremy tube is used as the work table. When erected between the sections, the bar does not hit the guide arm, and the ready-mixed concrete can be placed appropriately and stably.

  According to the third aspect of the present invention, since the yatco reinforcing portion is provided on the upper surface of the yatco, it is possible to suspend the heavier construction column. Moreover, since the Yatco reinforcing portion extends upward along the Yatco arm portion, the space between the Yatco arm portions is not narrowed, and a wide working space can be secured.

  According to the fourth aspect of the present invention, the width of at least the center portion of the guide arm is set so as not to protrude from the Yatco arm portion of the Yatco. That is, since the guide arm is formed so that the space between the Yatco arm portions is not narrowed, a wide work space can be secured.

It is a top view which shows the construction pillar construction device concerning Embodiment 1 of this invention. It is a front view which shows the true pillar installation apparatus of FIG. It is the top view (a) which shows the Yatko of the true pillar installation apparatus of FIG. 1, a side view (b), and the top view (c) of a column connection part. It is a front view which shows the state which connects a construction pillar to the Yatco of FIG. It is a top view which shows the mount frame of the true pillar installation apparatus of FIG. It is a front view of the mount frame of FIG. It is the top view (a) and front view (b) which show the guide arm of the mount frame of FIG. It is a front view which shows the state which has built the tremy pipe | tube in the true pillar construction apparatus of FIG. It is a top view which shows the state which has built the tremy pipe | tube in the true pillar construction apparatus of FIG. It is a figure which shows the state which has arrange | positioned the true pillar installation apparatus of FIG. It is a figure which shows the state which raises a construction pillar after FIG. It is the figure (a) which shows the state which builds a true pillar after FIG. 11, and the figure (b) which shows the state which adjusts the position etc. of a true pillar after that. Fig. 12 (a) shows a state in which a tremmy pipe is installed when a live control is carried out using a pump vehicle after Fig. 12 (b), and Fig. 12 (b) shows a state in which the ready-mixed concrete is placed in the pump vehicle. ). It is a figure which shows the state which builds a tremy pipe | tube, when ending a live control using a slope after FIG.12 (b). It is a figure which shows the state which casts concrete with a concrete mixer truck after FIG. It is the top view (a) and side view (b) which show the yacht of the true pillar installation apparatus concerning Embodiment 2 of this invention. It is a bottom view of the Yatco of FIG. It is the top view (a) and front view (b) which show the guide arm of the construction pillar construction apparatus concerning Embodiment 2 of this invention. It is the front view (a) which shows the 1st Yatco reinforcement part of the Yatco of FIG. 16, and AA sectional drawing (b). It is the front view (a) which shows the 2nd Yatco reinforcement part of the Yatco of FIG. 16, and BB sectional drawing (b). It is a top view which shows the mount frame of the construction pillar installation apparatus concerning Embodiment 2 of this invention. It is an enlarged plan view which shows the state which mounted the Yatco of FIG. 16 on the mount frame of FIG. It is a top view which shows the conventional construction pillar erection device. FIG. 24 is a front view of the true pillar installation device of FIG. 23.

  The present invention will be described below based on the illustrated embodiments.

(Embodiment 1)
FIGS. 1-15 shows this embodiment, FIG. 1, FIG. 2 is the top view and front view which show the construction pillar construction apparatus 1 which concerns on this embodiment. This structural pillar building device 1 is a device for constructing the structural pillar 101 in a reverse driving method or the like, and mainly includes a gantry 2 and a Yatco 3.

  As shown in FIG. 3, the Yatco 3 has a substantially cross shape having Yatco arm portions 31 extending in four directions, and a true pillar 101 is connected to the center portion. That is, four horizontally long, substantially rectangular parallelepiped arm portions 31 extend in four directions at intervals of 90 degrees from the block-shaped center portion 32, and the overall planar shape is substantially cross-shaped and the front shape is substantially flat. Yes. Further, the end portion 31 a of the YATCO arm portion 31 has a slightly vertically long and substantially rectangular parallelepiped shape, and extends vertically equally with respect to the YATCO arm portion 31. Here, the shape of the Yatco arm portion 31 including the end portion 31a can stably support the construction pillar 101 having a predetermined weight while being placed on a support jack 24 which will be described later, and a rotation which will be described later. It is set so that as much space as possible can be secured on the table 23.

  Further, a center eye plate 33 for hanging with a crane 105 or the like is disposed on the upper surface of the center portion 32. Similarly, the center eye plate 33 is hung with a crane 105 or the like on the center upper surface of the end portion 31a of each Yatco arm portion 31. The eye plate 34 is disposed. Further, a short columnar column connecting portion 35 is disposed on the lower surface of the center portion 32, and a columnar column 36 can be detachably connected to the column connecting portion 35 as shown in FIG. Then, by connecting the stem pillar 101 to the lower end portion of the column 36 via the adjusting member 37, the stem pillar 101 is connected to the center portion of the YATCO 3 so as to extend perpendicularly to the YATKO 3.

  Here, depending on the working environment, the working method, and the like, the frame pillar 101 may be connected to the column connecting portion 35 without using the column 36. Further, the cross-sectional shapes (cross-sectional shapes in a direction perpendicular to the longitudinal direction) of the column connecting portion 35 and the column 36 are substantially the same shape and are substantially regular octagons.

  As shown in FIGS. 5 and 6, the gantry 2 mainly includes a lower carriage 21, an upper carriage 22, a turntable 23, a support jack 24, and a guide arm 25.

  The lower carriage 21 is a carriage that is disposed on the gantry base 26 and is movable in a first horizontal direction (for example, the X direction) and can be adjusted in a fixed position. That is, the gantry base 26 is an annular body having a substantially square planar shape, and two first rails 211 are arranged in parallel on the upper surface along a pair of opposing sides. The lower carriage 21 is a substantially square annular body whose planar shape is smaller than that of the gantry base 26, and wheels that are engaged with the first rail 211 are provided. A first horizontal direction (see FIG. 6 in the depth direction). In addition, a first stopper 212 is disposed on both ends of each first rail 211, and the screw 212 a of the first stopper 212 is brought into contact with the end surface of the lower carriage 21, so that the lower carriage 21 The fixed position can be adjusted.

  The upper carriage 22 is a carriage that is disposed above the lower carriage 21 and is movable in a second horizontal direction (for example, the Y direction) orthogonal to the first horizontal direction and adjustable in fixed position. That is, two second rails 221 perpendicular to the first rail 211 are arranged on the upper surface of the lower carriage 21 in parallel. The upper carriage 22 is a substantially square annular body whose planar shape is smaller than that of the lower carriage 21, and wheels 222 that engage with the second rail 221 are provided. A second horizontal direction ( It is movable in the left-right direction in FIG. Moreover, the 2nd stopper 223 is arrange | positioned at the both ends of each 2nd rail 221, The screw | thread 223a of this 2nd stopper 223 is made to contact | abut to the end surface of the top carriage 22, and thereby the top carriage 22 is fixed. The fixed position can be adjusted.

  The turntable 23 is a table that is disposed above the upper carriage 22 and is rotatable and can be fixed at a fixed position. That is, a plurality of first rollers 231 that are rotatable around the horizontal axis are arranged on the upper surface of the upper carriage 22, and further, a second roller 232 that is rotatable around the vertical axis is circumferential. A plurality are arranged on the top. The turntable 23 has a substantially annular shape and has a flange portion 233 extending from the outer peripheral surface in the horizontal direction. The flange portion 233 is disposed on the first roller 231, and the outer periphery of the turntable 23 below the flange portion 233. When the second roller 232 comes into contact with the surface, the turntable 23 can be rotated 360 degrees about its vertical center. The fine adjustment of the rotation of the turntable 23 is performed by a worm gear (not shown).

  A plurality of third stoppers 234 are arranged on the upper surface of the upper carriage 22 and the fixed position of the turntable 23 can be adjusted by operating the third stoppers 234. . Here, the operating mechanism of the third stopper 234 may be any type. For example, in this embodiment, when the bolt is tightened, the flange portion 233 is clamped by the two clamping portions. It has become.

  The support jacks 24 are jacks that are disposed on the turntable 23 and support the end portions 31 a of the respective yam arm portions 31 of the yatco 3. That is, as shown in FIG. 5, the rotary table 23 is arranged at 90 ° intervals so as to extend in the vertical direction so as to face the four sides of the lower carriage 21 and the upper carriage 22. The size (capacity) of the support jack 24 and the number of the support jacks 24 are set so that the Yatco 3 and the construction pillar 101 having a predetermined weight can be stably supported. In this embodiment, the support jack 24 having a predetermined capacity is supported. However, one each is arranged facing the four sides of the lower carriage 21 and the upper carriage 22.

  The guide arm 25 is disposed on the turntable 23 so as to be able to be tilted up and down, and is an arm that guides the true pillar 101. A plurality of guide arms 25 are provided and face each support jack 24 to the inner peripheral side of the support jack 24. It is arranged. That is, as shown in FIG. 7, a pair of brackets 251 is disposed on the upper surface of the turntable 23 so as to sandwich the support jack 24 with respect to each support jack 24, and two pairs of arms 252 It is connected to the bracket 251 so as to be rotatable, that is, to be able to rise and fall around its base end. Here, the state of the arm 252 is fixed and maintained in a state where the arm 252 is tilted horizontally and a state where it is raised vertically. A guide roller 253 that is rotatable about a horizontal axis is disposed at the free end of each arm 252.

  Then, in a state where each arm 252 is tilted to the center side / inner peripheral side of the turntable 23, the guide roller 253 contacts the side surface of the column 36 (column connecting portion 35) or the construction pillar 101, and the construction pillar 101 is moved. It is designed to guide you. In this way, the guide arm 25 is disposed on the inner peripheral side (center side of the turntable 23) of the support jack 24 so as to face the support jacks 24, respectively. In other words, the guide arm 25 and the supporting jack 24 are disposed in order from the inner peripheral side along the longitudinal direction of each of the arm portions 31 of the body 3 (so as to overlap the arm portions 31).

  Further, a work table portion 235 that protrudes upward is provided on the upper surface of the turntable 23 where the respective arm portions 31 of the Yattco 3 are not positioned, that is, on the upper surface of the turntable 23 where the Yatco 3 does not exist above. That is, as shown in FIG. 1, the center portion of the end portion 31 a of each Yatco arm portion 31 is placed on the support jack 24 and the Yatco 3 is set on the mount 2, and the end portion 31 a is included on the plane. A work table portion 235 is provided so as to cover the upper surface portion of the turntable 23 where the Yatco arm portion 31 does not overlap. Specifically, a work table portion 235 having a substantially rectangular planar shape and a convex shape is formed between the four end portions 31a.

  The height of the work table 235 is set to be higher than the height of the guide arm 25 in the tilted state. That is, as shown in FIG. 2, the height of the work table portion 235 is set so that the guide arm 25 does not protrude from the upper surface of the work table portion 235 in a state where the arm 252 of the guide arm 25 is tilted horizontally. Yes. As described above, in this embodiment, the entire guide arm 25 does not protrude from the upper surface of the work table portion 235, but a part of the guide arm 25 is operated within a range in which a square pipe 131 described later can be installed. You may come to protrude from the upper surface of the base part 235. FIG. For example, the bracket 251 may protrude from the upper surface of the work table portion 235.

  Such a gantry 2 can be placed on a gantry base 4 as shown in FIGS. This gantry base 4 is a substantially cube-shaped dedicated pedestal whose height can be adjusted. Moreover, this mount base 4 can be arbitrarily manufactured with the steel mountain retaining material. Furthermore, the gantry 2 can be installed on the gantry base 4 or installed without being laid on the gantry base 4 according to the working environment, the working method, or the like.

  Next, the operation of the construction column building device 1 having such a configuration, the construction column construction method using the construction column construction device 1 and the like will be described.

  First, as shown in FIG. 10, after excavation of the excavation hole 102 and the bottom expanded portion 103 and the rebar cage 104 are installed, the gantry 2 is arranged right above the surface casing 106 by the crane 105. Here, in this embodiment, it is assumed that the gantry 2 is placed on the gantry base 4 and arranged. Next, as shown in FIG. 11, the column 36 is connected to the column connection portion 35 of the YATCO 3, and the frame pillar 101 is connected to the column 36 via the adjusting member 37, and the frame column 101 is built. Wake up. At this time, the Yatco 3 side is hung with one crane 105, and the lower end side of the frame pillar 101 is hung with the other crane 105.

  Subsequently, as shown in FIG. 12A, the construction pillar 101 is inserted and built into the gantry 2 and the excavation hole 102. At this time, as shown in FIGS. 1 and 2, the arm 252 of each guide arm 25 is tilted so that the guide roller 253 is applied to the side surface of the column 36 (column connecting portion 35), and as shown in FIG. The position (including torsion) of the construction pillar 101 is adjusted by moving and rotating the lower carriage 21, the upper carriage 22, and the turntable 23. And after adjusting the height of each support jack 24, the center part of the edge part 31a of each Yatco arm part 31 is mounted on the support jack 24, and the Yatco 3 is set to the mount frame 2. FIG. As a result, the true pillar 101 is built at a predetermined position and height.

  Next, ready-mixed concrete is placed in the excavation hole 102, and there are a case where the pump car 110 is used and a case where the slope 120 is used. First, when the pump car 110 is used, as shown in FIG. 13A, two sets of tremy pipes 130 are installed in the excavation hole 102 through the erected column erection device 1. At this time, as shown in FIGS. 8 and 9, two square pipes (bars) 131 are installed between the two work table portions 235, and a U-shaped tremy tube placed between the square pipes 131. A plurality of tremy tubes 130 are inserted and connected between the Yatco arm portions 31 while temporarily placing the tremy tubes 130 with the support 132. In addition, a popper for receiving the tip hose of the pump car 110 is connected to the upper end portion of the uppermost tremy tube 130.

  Subsequently, as shown in FIG. 13B, the pump car 110 is guided to the ready-mixed concrete placement place. Then, the tip hose of the pump car 110 is inserted into the tremy tube 130 from the popper. The ready-mixed concrete supplied from the concrete mixer truck is pumped and the ready-mixed concrete is placed in the excavation hole 102 by the tremy pipe 130.

  On the other hand, when using the slope 120, first, as with the case of using the pump car 110, two sets of tremy pipes 130 are installed. In this case, as shown in FIG. 14, the upper end portion of the uppermost tremy tube 130 is positioned immediately above the surface casing 106. At this time, although not shown in the figure, two square pipes 131 are installed on the surface casing 106 and positioned by a tremy tube receiving tool 132 placed between the square pipes 131. After that, as shown in FIG. 15, the slope 120 is installed, and the concrete mixer truck 121 is guided to the tremy pipe 130 to place the ready-mixed concrete.

  After placing the ready-mixed concrete in this manner, a curing time is set until the ready-mixed concrete is solidified, and the structural pillar erection device 1 and the like are removed and backfilled, and the surface casing 106 is pulled out. .

  As described above, according to this true pillar erection device 1, the Yatco 3 is not positioned above the turntable 23 in a state where the Yatco 3 is substantially cross-shaped and supported by the support jack 24 of the gantry 2. Space exists. That is, a wide work space is secured on the turntable 23, and the worker M can get on the lower carriage 21 or the like and work stably and safely. For example, when inserting the Tremy tube 130 between the Yatco arms 31 and placing it, the worker M can get on the lower carriage 21 and work in a wide work space, thereby improving workability and safety. It becomes possible.

  Moreover, the guide arm 25 is disposed on the inner peripheral side of the support jack 24 so as to face the support jack 24. That is, since both the guide arm 25 and the support jack 24 are arranged so as to overlap along the YATCO arm portion 31 of the YATCO 3, it is possible to secure a wider working space on the turntable 21.

  In addition, since the work table 235 is provided on the upper surface of the turntable 21 where the YATCO arm 31 of the YATCO 3 is not positioned, it is possible to improve workability and the like by using the work table 235. Moreover, since the height of the work table portion 235 is set higher than the height of the guide arm 25 in a tilted state (a state in which the structural pillar 101 is guided), for example, an angle for fixing the tremy tube 130 When the pipe 131 is installed between the work table portions 235, the square pipe 131 does not hit the guide arm 25, and the ready-mixed concrete can be placed appropriately and stably.

(Embodiment 2)
16 to 22 show this embodiment. In this embodiment, the weight of the construction pillar 101 to be built is different from that in the first embodiment, and the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  That is, in the first embodiment, the true pillar 101 up to about 50 tons is targeted, whereas in this embodiment, the true pillar 101 up to about 100 tons is targeted. For this reason, as shown in FIGS. 16 and 17, Yatco reinforcing portions 51 and 52 extending upward along the Yatco arm portion 31 are provided on the upper surface of the Yatco 3.

  As shown in FIG. 19, the first Yatco reinforcing portion 51 has a plate-like shape on each side of the first main surface portion 511 having an I-shaped cross section and a substantially isosceles trapezoid shape (substantially trapezoidal trapezoid). The first side surface portion 512 is coupled to the first main surface portion 511 perpendicularly. Similarly, as shown in FIG. 20, the second Yatco reinforcing portion 52 has a substantially trapezoidal plate-like second main shape with an I-shaped cross section, one leg having a hypotenuse and the other leg having a vertical side. A plate-like second side surface portion 522 is vertically coupled to the second main surface portion 521 on each side except the vertical side of the surface portion 521. In addition, the width (I-shaped width) of the first side surface portion 512 and the second side surface portion 522 is set to be approximately the same as the width of the YATCO arm portion 31, and the first YATCO reinforcing portion 51 and the second side portion 522. The height (I-shaped height) of the Yatco reinforcing portion 52 is set to the same dimension.

  As shown in FIG. 16, the first Yatco reinforcing portion 51 overlaps (along) the two Yatco arm portions 31 arranged in a straight line so that the first main surface portion 511 extends vertically upward. It is connected. Further, the two second Ytco reinforcing portions 52 are connected to the remaining two Yatco arm portions 31 so as to overlap (along) the second main surface portion 521 so as to extend vertically upward. The side is connected to the first main surface portion 511.

  In this manner, one first Yatco reinforcing portion 51 and two second Yatco reinforcing portions 52 are arranged in a cross shape, and each end edge reaches the front side of the end portion 31 a of the Yatco arm portion 31. . And, on the plane, Yatco reinforcing portions 51 and 52 are arranged so as not to protrude from the Yatco arm portion 31. That is, the Yatco reinforcing portions 51 and 52 are connected in a substantially isosceles trapezoidal shape on the substantially flat plate-shaped Yatco 3 when viewed from the front, and the plane shape of the Yatco 3 is maintained as it is when viewed from the plane.

  The plate thickness, height, and material strength of the first Yatco reinforcing portion 51 and the second Yatco reinforcing portion 52 are set so that the construction pillar 101 to be built can be stably suspended. Yes. That is, it is set so that the Yatco 3 will not be deformed or distorted beyond tolerance even when the true pillar 101 up to about 100 tons is suspended. Further, in order to suppress deformation and distortion of the YATCO 3, a plate-like reinforcing plate extending along the longitudinal direction of the end portion 31a is provided on the back surface of the end portion 31A of each YATCO arm portion 31, as shown in FIG. 53 is attached.

  On the other hand, the width of at least the center portion of the guide arm 25 is set so as not to protrude from the yat arm portion 31 of the yatco 3. That is, at least the center portion of the arm 252 does not protrude from the yat arm portion 31 on the plane in a state where the arm 252 is tilted, and a space as wide as possible between the yat arm portions 31 can be secured.

  Specifically, as shown in FIG. 18, the arm 252 is a horizontally long, rectangular parallelepiped main arm 252a, a first reinforcing base 252b disposed on the bracket 251 side, and a guide roller 253 side. And the second reinforcing base 252c. The width of the main arm 252a on the plane, that is, the width of the center portion of the guide arm 25 is set to be smaller than the width of the Yatco arm portion 31 on the plane and to have a predetermined strength. The first reinforcing base 252b and the second reinforcing base 252c are attached so that the planar shape is substantially triangular and the bottom side thereof is located at the edge of the main arm 252a. As described above, the reinforcing bases 252b and 252c are attached to both ends of the main arm 252a, so that the strength required for the entire arm 252, that is, the strength required to guide the construction pillar 101 is secured. Yes.

  Further, the arm 252 is rotatably connected to the bracket 251 via a pair of first support plates 254 attached to the first reinforcing base 252b. Further, two sets of second support plates 255 are attached in parallel to the second reinforcing base 252c, and guide rollers 253 are rotatably disposed on the second support plates 255.

  Such a guide arm 25 is disposed on the turntable 23, and as shown in FIG. 21, two support jacks 24 are disposed so as to sandwich the bracket 251 with respect to each guide arm 25. And in the state which mounted the Yachko 3 on the mount frame 2, as shown in FIG. 22, the end part 31a of the Yatko arm part 31 is supported by the two support jacks 24, respectively. Here, the size (capacity) of one support jack 24 is the same as that of the first embodiment, and by providing two support jacks 24 for one Yatco arm portion 31, the structure to be built is constructed. It can withstand the weight of the true pillar 101. Further, the center portion of the arm 252, that is, the center portion of the main arm 252 a where the reinforcing bases 252 b and 252 c are not overlapped, does not protrude from the Yatco arm portion 31 in a state where the arm 252 is tilted.

  As described above, in this embodiment, only the central portion of the arm 252 does not protrude from the Yatco arm portion 31, but it may not protrude beyond the central portion of the arm 252. In other words, the guide arm 25 may be prevented from protruding from the YATCO arm portion 31 so that as much space as possible can be secured between the YATCO arm portions 31 within a range in which a predetermined strength can be obtained. For example, the guide roller 253 may not protrude.

  As described above, according to this embodiment, because the Yatco reinforcing portions 51 and 52 are provided on the upper surface of the Yatco 3, the heavier construction pillar 101 is hung or a plurality of connected construction pillars 101 are connected. Can be suspended. For this reason, it is not necessary to connect the divided structural pillars 101 in a suspended state, work can be performed efficiently, and a plurality of structural pillars 101 can be connected in advance in a horizontal state. Accuracy and connection accuracy can be increased. Moreover, since the Yatco reinforcing portions 51 and 52 extend upward along the Yatco arm portion 31, the space between the Yatco arm portions 31 is not narrowed, and a wide working space can be secured.

  Further, the width of at least the center portion of the guide arm 25 is set so as not to protrude from the yatco arm portion 31 of the yatco 3. That is, since the guide arm 25 is formed so that the space between the Yatco arm portions 31 is not narrowed, a wide work space can be secured. Here, in this embodiment, although the work table 235 is not shown on the turntable 23 of FIGS. 21 and 22, the work table 235 is removable and can be implemented as necessary. It is possible to perform the work by attaching in the same manner as in the first mode.

  As described above, even when the heavier construction pillar 101 is suspended, a large work space can be secured, and as a result, workability and safety can be maintained and improved.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the substantially rectangular parallelepiped end portion 31a extends perpendicularly to the Yatco arm portion 31. However, depending on the required strength, the position of the support jack 24, etc. You may make it the edge part 31a of a magnitude | size. For example, the end arm 31 may be a straight end 31a. In the second embodiment, the case where the center portion of the guide arm 25 does not protrude from the YATCO arm portion 31 has been described. However, in the first embodiment, the center portion of the guide arm 25 does not protrude from the YATKO arm portion 31. It may be. In this case, in the guide arm 25 shown in the second embodiment (FIG. 18), the support jack 24 is disposed between the pair of brackets 251, and the guide arm is extended along the longitudinal direction of each of the yam arms 31 of the yat 3. 25 and a supporting jack 24 are arranged.

DESCRIPTION OF SYMBOLS 1 Construction pillar erection device 2 Base 21 Lower cart 22 Upper cart 23 Rotating base 235 Working base 24 Support jack 25 Guide arm 26 Base base 3 Yatco 31 Yatco arm 31a End 35 Column connection 36 Column 51 1st Yatco reinforcement part 52 Second Yatco reinforcement part 101

In order to achieve the above-mentioned object, the invention according to claim 1 is composed of a gantry and a yatco, and the yatco is substantially cross-shaped having a yatco arm portion extending in four directions, and a construction column is connected to the center portion. The gantry is disposed on the gantry base and is movable in a first horizontal direction and can be adjusted in a fixed position. The trolley is disposed above the lower trolley and is perpendicular to the first horizontal direction. An upper carriage that is movable in the horizontal direction and that can be adjusted in a fixed position; a rotary table that is disposed above the upper carriage and that is rotatable and that can be adjusted in a fixed position; and A plurality of support jacks that support end portions of the Yatco arm part; and a plurality of guide arms that are arranged on the rotary base so as to be able to be tilted up and down, and that guide the frame pillar. The guide arm is used for the support. The jack for the bearing facing the jack State is disposed on the inner peripheral side, an upper surface of the turntable forceps arms are not positioned in the forceps, workbench portion protruding upward is provided, the height of the workbench unit, which defeated the It is set to be higher than the height of the guide arm .

According to a second aspect of the present invention, in the frame pillar erection device according to the first aspect , a Yatco reinforcing portion that extends upward along the Yatco arm portion is provided on the upper surface of the Yatco. Features.

According to a third aspect of the present invention, in the structural pillar erection device according to the first or second aspect , the width of at least the center portion of the guide arm is set so as not to protrude from the Yatco arm portion of the Yatco. It is characterized by that.

Further , since the work table portion is provided on the upper surface of the turntable where the Yatco arm portion is not positioned, it is possible to improve workability and the like by using this work table portion. Moreover, since the height of the work table is set to be higher than the height of the guide arm in the tilted state (the state in which the true column is guided), for example, a bar for fixing the tremy tube is used as the work table. When erected between the sections, the bar does not hit the guide arm, and the ready-mixed concrete can be placed appropriately and stably.

According to the second aspect of the present invention, since the yatco reinforcing portion is provided on the upper surface of the yatco, it is possible to suspend a heavier construction column. Moreover, since the Yatco reinforcing portion extends upward along the Yatco arm portion, the space between the Yatco arm portions is not narrowed, and a wide working space can be secured.

According to invention of Claim 3 , the width | variety of at least the center part of a guide arm is set so that it may not protrude from the Yatco arm part of Yatco. That is, since the guide arm is formed so that the space between the Yatco arm portions is not narrowed, a wide work space can be secured.

Claims (4)

Consists of a frame and Yatco,
The Yatco is substantially cross-shaped with Yatco arm portions extending in four directions, and a construction pillar is connected to the center portion.
The gantry is disposed on the gantry base and is movable in a first horizontal direction and can be adjusted in a fixed position. The trolley is disposed above the lower trolley and is perpendicular to the first horizontal direction. An upper carriage that is movable in the horizontal direction and that can be adjusted in a fixed position; a rotary table that is disposed above the upper carriage and that is rotatable and that can be adjusted in a fixed position; and A plurality of support jacks that support end portions of the Yatco arm part; and a plurality of guide arms that are arranged on the rotary base so as to be able to be tilted up and down, and that guide the frame pillar. The guide arm is used for the support. It is arranged on the inner peripheral side of the jack for support facing the jack,
This is a construction device for a true pillar.   A work table portion protruding upward is provided on the upper surface of the turntable where the Yatco arm portion is not positioned, and the height of the work table portion is set to be higher than the height of the guide arm in the tilted state. The erected pillar erection device according to claim 1, wherein:   3. The erection column erection device according to claim 1, wherein a Yatco reinforcing portion that extends upward along the Yatco arm portion is provided on an upper surface of the Yatco. 4. The width of the at least central part of the guide arm is set so as not to protrude from the yatco arm part of the yatco. apparatus.

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