Installation Method of Rail for Hole Cutting Device

Abstract

To provide an installation method of rails for a drilling device capable of efficiently installing rails for guiding the movement of the drilling device at a drilling site.SOLUTION: Traveling rails GR for guiding traveling of a drilling device A consist of multiple sets of unit rail parts GRU1 to GRU3. The method includes the steps of: removing the unit rail part GRU1 at a place where drilling is completed; transporting the unit rail part GRU1 to a rear part of the unit rail part GRU3 at the rearmost of the multiple sets of rail unit parts GRU1 to GRU3; and assembling the unit rail part GRU1 and the unit rail part GRU3 simultaneously with drilling work. With this, the traveling rails GR can be installed efficiently.SELECTED DRAWING: Figure 19

Description

Technical Field

[0001] The present invention relates to a method for installing rails for a drilling device, and more particularly, to a method for installing rails that serve as a guide when moving a drilling device for drilling holes in an existing concrete structure.

Background Art

[0002] In concrete structures in contact with the ground, such as those on the ground, underground, or semi-underground, or in concrete structures constructed on the ground close to railways or roads, for the purpose of seismic reinforcement, a hole is drilled from one side of the structure using a drilling device, and after filling the hole with a fixing material, a post-construction shear reinforcement bar (hereinafter referred to as a shear reinforcement bar) is inserted and integrated with the structure to improve the shear resistance of the structure.

[0003] In addition, in existing structures such as roads, bridges, dams, and levees composed of concrete frameworks, for the purpose of maintaining or reinforcing the strength, holes are drilled at predetermined intervals on the side surfaces, upper and lower surfaces of the framework using a drilling device, a post-construction anchor is embedded in the holes, and reinforcement is arranged to connect with the post-construction anchor, and then additional concrete is placed.

[0004] Regarding the shear reinforcement method for structures, for example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2016-037787) is known. Also, regarding the additional concrete placement method for structures, for example, Patent Document 2 (Japanese Patent Application Laid-Open No. 2018-131848) is known.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] By the way, in the above-described drilling work, when the drilling target range is long, the drilling is performed while moving the drilling device along the wall surface, or the drilling is performed perpendicular to the wall. Therefore, it is necessary to move the drilling device parallel to the wall. For this reason, it is conceivable to lay rails along the concrete wall surface on the floor surface of the drilling work site and move the drilling device along the rails.

[0007] However, in the current drilling work, the structure and installation technology of the rails have not been established, and an important issue is how to efficiently install the rails for guiding the movement of the drilling device.

[0008] The present invention has been made based on the above technical background, and an object thereof is to provide a technique capable of efficiently installing a rail for guiding the movement of a drilling device at a drilling site.

Means for Solving the Problems

[0009] In order to solve the above problems, the method for installing a rail for a drilling device according to the present invention described in claim 1 includes: (a) arranging and installing two or more sets of unit rail parts constituting a rail for guiding the movement of the drilling device along the wall surface in a state of being connected to each other on a floor portion intersecting the wall surface to be drilled; (b) removing a used unit rail part located at a place where the drilling work has been completed among the two or more sets of unit rail parts; (c) after the process (b), transporting the used unit rail part to the rear part of the last unit rail part among the two or more sets of unit rail parts; and (d) after the process (c), arranging and installing the last unit rail part and the used unit rail part along the wall surface in a state of being connected to each other.

[0010] The method for installing a rail for a hole drilling device of the present invention according to claim 2 is, in the invention according to claim 1, characterized in that a hole drilling operation is performed on the wall surface by the hole drilling device, and at least one of the processes (b) to (d) is performed.

[0011] The method for installing a rail for a hole drilling device of the present invention according to claim 3 is, in the invention according to claim 1, characterized in that the rail is a member constituting the unit rail portion, and includes: a pair of long rail portions that extend along the wall surface and are installed on the floor portion in a state of facing each other; a pair of first protruding portions that are integrally provided on each of the pair of long rail portions and protrude inward from each of the pair of long rail portions toward the inside where the pair of long rail portions face each other; a pair of second protruding portions that are integrally provided on each of the pair of long rail portions and protrude outward from each of the pair of long rail portions; a first through hole provided so as to penetrate the upper and lower surfaces of the second protruding portion; a fixing member that is a member constituting the unit rail portion, is installed on the floor portion through the first through hole of each of the pair of second protruding portions, and fixes the pair of long rail portions to the floor portion in a detachable state; a first connecting member that is a member constituting the unit rail portion, is provided between the pair of long rail portions, and is detachably attached to the pair of first protruding portions to connect the pair of long rail portions to each other; and a second connecting member that is detachably attached to the tip ends of the long rail portions of the unit rail portions adjacent to each other along the wall surface to connect the long rail portions of the unit rail portions to each other.

[0012] The method for installing a rail for a hole drilling device of the present invention according to claim 4 is, in the invention according to claim 3, characterized in that a hole drilling operation is performed on the wall surface by the hole drilling device, and at least one of the processes (b) to (d) is performed.

[0013] The method for installing the rail for the drilling device of the present invention according to claim 5 is, in the invention according to claim 3 above, characterized in that in the step (b), the pair of long rail portions, the fixing member, the first connecting member and the second connecting member are disassembled.

[0014] The method for installing the rail for the drilling device of the present invention according to claim 6 is, in the invention according to claim 5 above, characterized in that while performing a drilling operation on the wall surface with the drilling device, at least one of the steps (b) to (d) is performed.

[0015] The method for installing the rail for the drilling device of the present invention according to claim 7 is, in the invention according to any one of claims 3 to 6 above, characterized in that the pair of long rail portions are constituted by L-shaped steel materials, and are installed on the floor portion with the mountain side of the L-shaped steel material facing upward.

[0016] The method for installing the rail for the drilling device of the present invention according to claim 8 is, in the invention according to any one of claims 3 to 6 above, characterized in that the fixing member is constituted by a screw-type anchor member.

[0017] The method for installing the rail for the drilling device of the present invention according to claim 9 is, in the invention according to claim 8 above, characterized in that the pair of long rail portions are constituted by L-shaped steel materials, and are installed on the floor portion with the mountain side of the L-shaped steel material facing upward.

Effect of the Invention

[0018] According to the present invention, it becomes possible to efficiently install the rail for guiding the movement of the drilling device at the drilling site.

Brief Description of the Drawings

[0019]

Figure 1

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Figure 19

Embodiment for Carrying Out the Invention

[0020] Hereinafter, an embodiment as an example of the present invention will be described in detail with reference to the drawings. In the drawings for explaining the embodiment, the same components are generally denoted by the same reference numerals, and the repeated description thereof will be omitted.

[0021] Fig. 1 is an explanatory view showing a part of a concrete structure that has been earthquake-proof reinforced by inserting shear reinforcement bars into the holes drilled by the drilling device according to an embodiment of the present invention.

[0022] The drilling device of the present embodiment is used, for example, for an existing concrete structure S in contact with the ground G as shown in Fig. 1, or an existing concrete structure (not shown) constructed on the ground close to a structure such as a railway or a road, to open a hole H from one side (wall surface) as a step of the reinforcement work. After filling the fixing material M inside the opened hole H, the shear reinforcement bar R is inserted and integrated with the structure S to improve the shear strength of the structure S. As the shear reinforcement bar R, for example, one obtained by threading one side of a generally used reinforcing bar R1, cutting it obliquely, and attaching a hexagonal nut (fixing body) R2 to the tip portion is applicable.

[0023] Fig. 2 is a side view of the drilling device according to an embodiment of the present invention, Fig. 3 is a front view of the drilling device of Fig. 1, Fig. 4 is a plan view of the drilling device of Fig. 1, Fig. 5 is a cross-sectional view taken along the line V-V of Fig. 3, Fig. 6 is a cross-sectional view taken along the line VI-VI of Fig. 2, and Fig. 7 is an explanatory view showing the arrangement of the chain provided in the drilling device of Fig. 1.

[0024] As shown in FIGS. 2 to 6, the hole drilling device A of the present embodiment includes a main body frame 10 formed in a rectangular parallelepiped shape from a rod-shaped steel material such as a column (square steel pipe) or an H-shaped steel, an elevating frame 20 also formed in a rectangular shape from a steel material such as a column or an H-shaped steel and provided so as to be elevable within the main body frame 10, and a drifter 30 provided on the elevating frame 20 for drilling a concrete structure S in front.

[0025] As shown in FIG. 3, the main body frame 10 has openings on the front and rear surfaces. On the other hand, as shown in FIGS. 2 and 5, on the side surfaces, girder members 11 are attached at a plurality of upper and lower positions (here, for example, two positions), and braces 12 are provided to ensure the required strength. Further, as shown in FIGS. 4 and 6, the elevating frame 20 is composed of four frame rods 21 forming a rectangle, and as shown in FIGS. 2, 5, and 6, it is fitted into guide rails 14 provided along four column members 13 extending vertically on the main body frame 10, and elevates within the opening range in the front while being guided by the guide rails 14.

[0026] As shown in FIG. 5, the drifter 30 includes a rod 32 with a bit 31 attached to its tip, and a drifter body 33 that applies a striking force, a rotational force, and a thrust force to the rod 32, and drills a hole H of a predetermined depth in the concrete structure S. This drifter 30 can be moved horizontally (moved along the wall surface to be drilled) on the elevating frame 20 so as to be able to move to a desired position on the opened front surface, and further can be moved forward and backward (moved along a direction intersecting (orthogonal) to the wall surface to be drilled) in order to drill the structure S through the opened front surface.

[0027] Note that in the drifter 30 of the present embodiment, for example, it is possible to drill a relatively deep hole H with a depth of about 1 m. However, the depth of the hole H can be freely set and is not limited to 1 m in the present embodiment.

[0028] Here, a specific example of the horizontal movement mechanism and the forward and backward movement mechanism of the drifter 30 will be described.

[0029] As shown in FIGS. 4 and 6, a horizontal member 40 for moving horizontally on the lifting frame 20 is provided on the lifting frame 20. Further, on the horizontal member 40, a reciprocating member 50 capable of reciprocating in a direction orthogonal to the moving direction of the horizontal member 40 is installed. Then, by the reciprocating member 50 moving the drifter 30 forward and backward and the horizontal member 40 moving the reciprocating member 50 horizontally, the drifter 30 can move horizontally and forward and backward.

[0030] In FIG. 6, the horizontal member 40 includes a horizontal guide rail 41 provided to extend horizontally along a frame rod 21 located at the rear portion forming the rectangular lifting frame 20, a horizontal body 42 that is long in the front-rear direction and slides on this horizontal guide rail 41, and a ball screw 44 that is screwed to the horizontal body 42 and is rotationally driven by a horizontal motor 43. Further, the drifter 30 is installed on the horizontal body 42 via the reciprocating member 50. Therefore, when the ball screw 44 rotates and the horizontal body 42 moves along the horizontal guide rail 41, the drifter 30 moves horizontally over the front opening range on the lifting frame 20.

[0031] In FIGS. 4 and 6, the reciprocating member 50 includes a reciprocating guide rail 51 provided along the horizontal body 42, a slider 52 that slides on the reciprocating guide rail 51, and an endless belt 54 that slides the slider 52 attached by being circularly driven by a reciprocating motor 53. Further, the drifter 30 is mounted on the slider 52. Therefore, when the endless belt 54 circulates due to the rotation of the reciprocating motor 53 and the slider 52 moves along the reciprocating guide rail 51, the drifter 30 moves forward and backward on the lifting frame 20. In this embodiment, the endless belt 54 is, for example, a non-metallic rubber belt, but it may also be a metal belt.

[0032] Next, a specific example of the lifting mechanism of the lifting frame 20 will be described.

[0033] As shown in FIG. 3, the lifting mechanism includes a chain 60 that suspends the lifting frame 20, a lifting motor 61 that raises and lowers the chain 60 to lift and lower the lifting frame 20, and a sprocket 62 around which the chain 60 is looped.

[0034] The chain 60 is composed of a first chain 60a and a second chain 60b, one ends of which are respectively attached to the centers of two opposite sides of the lifting frame 20. That is, as shown in FIGS. 3, 4, and 6, one ends of the first chain 60a and the second chain 60b are attached to the upper centers of the left and right two frame rods 21, which are components of the rectangular lifting frame 20. Also, the other ends of the first chain 60a and the second chain 60b are attached to the lower centers of the frame rods 21 on the opposite side.

[0035] The chain 60 is attached to the left and right frame rods 21 because if it were attached to the front and rear frame rods 21, it would interfere with the horizontally moving drifter 30.

[0036] Here, as shown in FIGS. 3 and 7, sprockets 62a and 62b are arranged at the centers in the front - rear direction in the upper left and right of the main body frame 10, and sprockets 62c and 62d are arranged at the centers in the front - rear direction in the lower left and right corresponding thereto. Also, a sprocket 62e is arranged between the lifting motor 61 and the sprocket 62d located near the lifting motor 61 and at a position slightly higher than the sprocket 62d. Further, a drive sprocket 61a is attached to the lifting motor 61.

[0037] Note that the sprockets 62b, 62d, and 62e on the side where the drive sprocket 61a and the lifting motor 61 are located (the right side in the illustrated case) are single double sprockets in which two sprockets are coaxially integrated, and two chains 60 (the first chain 60a and the second chain 60b) can be looped around them. Further, the sprockets 62a and 62c on the opposite side (the left side in the illustrated case) are single sprockets with only one sheet, and only the first chain 60a can be looped around them.

[0038] Then, as shown in FIG. 3, the first chain 60a is sequentially looped around the sprocket 62a, the sprocket 62b, the sprocket 62e, the drive sprocket 61a, the sprocket 62d, and the sprocket 62c upward from the upper mounting position on the left side of the lifting frame 20 and reaches the lower mounting position on the left side of the lifting frame 20. Further, the second chain 60b is sequentially looped around the sprocket 62b, the sprocket 62e, the drive sprocket 61a, and the sprocket 62d upward from the mounting position on the right side of the lifting frame 20 and reaches the lower mounting position on the right side of the lifting frame 20.

[0039] In FIG. 3, when the lifting motor 61 rotates clockwise and the first chain 60a and the second chain 60b circulate, the lifting frame 20 is lifted by these chains 60 and rises. Similarly, in FIG. 3, when the lifting motor 61 rotates counterclockwise and the first chain 60a and the second chain 60b circulate in the reverse direction, the lifting frame 20 is suspended by these chains 60 and descends.

[0040] Here, as shown in FIGS. 2 to 4, reaction force transmission portions 70 for transmitting the propulsion reaction force during drilling are installed at two locations, left and right, at the upper end of the main body frame 10, with respect to the structure S to be drilled. This reaction force transmission portion 70 includes a suction pad 71 that is adsorbed to the structure S by a negative pressure suction force from a vacuum pump (not shown), and a slide jack 72 that moves the suction pad 71 forward and backward. Then, during drilling, the slide jack 72 extends the suction pad 71 forward and presses it against the structure S, and the suction pad 71 is adsorbed to the structure S by the vacuum pump, so that the propulsion reaction force when drilling the structure S with the drifter 30 can be obtained, and drilling can be smoothly executed.

[0041] Note that the reaction force transmission portion 70 is preferably installed at two locations, left and right, at the upper end of the main body frame 10 as in the present embodiment, but it may be installed at either one location, left or right, at the upper end, at one location at the center of the upper end, or at a location other than the upper end.

[0042] Such a drilling device A can be moved along the traveling rail GR by a traveling motor 81 provided at the lower part of its main body frame 10. That is, as shown in FIGS. 2, 3, and 5, the drilling device A is mounted on the traveling rail GR via a plurality of (for example, four in the present embodiment) rollers 82 attached to the lower part of its main body frame 10. The roller 82 is a rotating member that is driven by the traveling motor 81 and rolls on the traveling rail GR, and includes two driving rollers 82a (see FIGS. 2, 3, and 6) and two driven rollers 82b (see FIGS. 3 and 6). The two driving rollers 82a are attached coaxially to a traveling drive shaft 84 that is rotationally driven via a belt 83 by the traveling motor 81. On the other hand, the two driven rollers 82b are installed rotatably at positions opposite to the driving rollers 82a in the extending direction of the traveling rail GR so as to rotate following the rotation of the driving rollers 82a.

[0043] In order to cut a hole H for inserting the shear reinforcing bar R into the concrete structure S as shown in FIG. 1 using the drilling device A having the above configuration, for example, the following steps are taken.

[0044] First, the boring device A is run along the traveling rail G to move it to the boring location. Subsequently, if necessary, after extending the suction pad 71 forward with the slide jack 72 and pressing it against the structure S for suction, the lifting frame 20 is moved to a predetermined height by the lifting motor 61, and the traversing body 42 is moved to a predetermined lateral position by the traversing motor 43, thereby moving the drifter 30 to the boring position.

[0045] Next, the power of the drifter 30 is turned on, and the drifter 30 is moved forward from the standby position to the position where the bit 31 contacts the structure S. When the bit 31 contacts the structure S, the moving distance of the drifter 30 is measured during a series of operations of automatically returning the drifter 30 to the original standby position, thereby measuring the facing distance between the boring device A and the structure S.

[0046] Next, the slider 52 is slid by the forward and backward motor 53 to move the drifter 30 forward, thereby pressing the bit 31 at the tip of the rod 32 constituting the drifter 30 against the boring position of the structure S to cut a hole in the structure S. When the hole is cut to a predetermined depth, the slider 52 is moved in a direction away from the structure S to move the drifter 30 backward and return it to the standby position.

[0047] To make holes in the structure 2, for example, at each lateral boring position, the height of the drifter 30 is changed to cut a plurality of holes. That is, the traversing body 42 is moved laterally by the traversing motor 43 to set the drifter 30 at the first lateral boring position. Subsequently, at the first lateral boring position, the lifting frame 20 is moved in the height direction by the lifting motor 61 to cut a plurality of holes while changing the height of the drifter 30. When the boring at the first lateral boring position is completed, the traversing body 42 is moved by the traversing motor 43 to the second lateral boring position adjacent to the first lateral boring position to set the drifter 30 at the second lateral boring position. Thereafter, at the second lateral boring position, a plurality of holes are cut while changing the height of the drifter 30 in the same manner as above. By repeating this, a plurality of holes are cut in the wall surface of the structure S.

[0048] Also, as another method of making holes, for example, for each hole-making position in the height direction, the horizontal position of the drifter 30 may be changed to make a plurality of holes. That is, the lifting frame 20 is moved in the height direction by the lifting motor 61 to set the drifter 30 at the first height-direction hole-making position. Subsequently, at the first height-direction hole-making position, the traversing body 42 is moved in the horizontal direction by the traversing motor 43 to make a plurality of holes while changing the horizontal position of the drifter 30. Then, when the hole-making at the first height-direction hole-making position is completed, the lifting frame 20 is moved by the lifting motor 61 to the second height-direction hole-making position directly above or below the first height-direction hole-making position to set the drifter 30 at the second height-direction hole-making position. Thereafter, at the second height-direction hole-making position, a plurality of holes are made while changing the horizontal position of the drifter 30 in the same manner as above. By repeating this, a plurality of holes are made in the wall surface of the structure S.

[0049] Thus, according to the hole-making device A of the present embodiment, since the drifter 30 can be moved in the height direction and the horizontal direction with respect to the wall surface to be hole-made of the concrete structure S to make holes, a plurality of holes can be made in the wall surface while reducing the burden on the operator.

[0050] Next, the traveling rail GR of the present embodiment will be described with reference to FIGS. 8 to 17.

[0051] FIG. 8 is a plan view of the traveling rail for the hole-making device, FIG. 9 is an enlarged plan view of the unit rail portion constituting the traveling rail of FIG. 8, FIG. 10 is a plan view of a pair of long rail portions constituting the unit rail portion of FIG. 9, FIG. 11(a) is a cross-sectional view taken along line I-I of FIG. 10, FIG. 11(b) is a cross-sectional view taken along line II-II of FIG. 10, FIG. 12(a) is a cross-sectional view taken along line I-I of FIG. 9, and FIG. 12(b) is a cross-sectional view showing the unit rail portion of FIG. 12(a) disassembled.

[0052] As shown in FIG. 8, the traveling rail GR is a rail that guides the movement of the drilling device A, and is laid on a concrete slab (floor part) that intersects (is orthogonal to) the wall surface SS to be drilled of the structure S and extends along the wall surface SS. The total length of the traveling rail GR is, for example, about 9000 mm, and the width is, for example, about 600 mm.

[0053] The traveling rail GR is composed of, for example, three sets of unit rail parts GRU. The unit rail part GRU is a unit part that constitutes the traveling rail GR, and the three sets of unit rail parts GRU have the same configuration as each other. These three sets of unit rail parts GRU are installed side by side along the wall surface SS, and are installed in a state of being connected to each other at the adjacent end parts of the unit rail parts GRU arranged along the wall surface SS. However, at least two sets of unit rail parts GRU are sufficient, and it is not limited to three sets and can be variously changed.

[0054] As shown in FIGS. 8 and 9, the unit rail part GRU includes a pair of long rail parts 90, 90, two connecting members (first connecting members) 91, 91, and four anchor members (fixing members) 92. The total length of the unit rail part GRU is, for example, about 3000 mm. In FIGS. 8 and 9, the anchor member 92 is shown in black for easy viewing of the drawing.

[0055] As shown in FIGS. 9 and 10, the pair of long rail parts 90, 90 are the rail body parts of the traveling rail GR, and are installed in a state of extending along the wall surface SS and are installed on the slab in a state of being separated from and facing each other in a direction orthogonal to the wall surface SS. Near both ends in the longitudinal direction of the long rail part 90, for example, two through holes (fourth fitting parts) 90h are provided. The through hole 90h is formed in a circular shape in plan view, for example, and its diameter is, for example, about 9.5 mm.

[0056] Further, as shown in FIG. 11, the long rail portion 90 is composed of, for example, an L-shaped steel material, and is installed on the slab SB with the peak side of the L-shaped steel material facing upward. By configuring the long rail portion 90 with an L-shaped steel material, a sturdy running rail GR can be constructed while being lightweight.

[0057] As shown in FIG. 10, inner protruding portions (first protruding portions) 90a, 90a are integrally provided on the inner long sides of each of the pair of long rail portions 90, 90. The inner protruding portions 90a, 90a are provided in a state of protruding inward from the opposing long sides of the pair of long rail portions 90, 90 toward the inside where the pair of long rail portions 90, 90 face each other.

[0058] The inner protruding portions 90a are provided, for example, two by two on each of the pair of long rail portions 90, for a total of four. The two inner protruding portions 90a, 90a of one long rail portion 90 and the two inner protruding portions 90a, 90a of the other long rail portion 90 are provided at the same position in the longitudinal direction of the long rail portion 90 so as to face each other.

[0059] The length X1 from the tip end portion in the longitudinal direction of the long rail portion 90 to the inner protruding portion 90a is, for example, about 750 mm, and the length X2 between two adjacent inner protruding portions 90a, 90a along the longitudinal direction of the long rail portion 90 is, for example, about 1500 mm. Each inner protruding portion 90a is formed, for example, in a rectangular shape in plan view, and its thickness is, for example, about 6 mm.

[0060] Further, as shown in FIGS. 11(a) and 12, on the upper surface of each inner protruding portion 90a, a protruding portion (second fitting portion) 90ap protruding upward from the upper surface is integrally provided with the inner protruding portion 90a. This protruding portion 90ap is formed, for example, in a conical shape, and its protruding height is, for example, about 14 mm, and the diameter is, for example, about 19 mm.

[0061] On one hand, as shown in FIGS. 9 and 10, outside projecting portions (second projecting portions) 90b, 90b are integrally provided on each outer long side of a pair of long rail portions 90, 90. These outside projecting portions 90b, 90b are provided in a state of projecting outward from each outer long side of the pair of long rail portions 90, 90.

[0062] Also, the outside projecting portions 90b are provided, for example, two by two on each of the pair of long rail portions 90, and a total of four are provided. The positions of the outside projecting portions 90b, 90b in the longitudinal direction of the long rail portion 90 are provided at the same positions as the positions of the inside projecting portions 90a, 90a in the longitudinal direction of the long rail portion 90. The outside projecting portion 90b is formed, for example, in a rectangular shape in plan view, and its thickness is, for example, about 6 mm.

[0063] Further, as shown in FIGS. 10, 11(a) and 12, through holes (first through holes) 90bh penetrating the upper and lower surfaces are provided in each of the outside projecting portions 90a, 90a. The through hole 90bh is formed, for example, in a circular shape in plan view. This through hole 90bh is a hole into which an anchor member 92 (see FIG. 12(a)) is inserted. That is, as shown in FIG. 12(a), the pair of long rail portions 90, 90 are detachably fixed to the slab SB by driving the anchor member 92 into the slab SB through the through hole 90bh of the outside projecting portion 90b.

[0064] Here, in the present embodiment, the anchor member 92 is constituted by, for example, a screw-type anchor member formed of a steel material, and is screwed into the slab SB in a detachable state. Therefore, since the attachment and detachment of the anchor member 92 can be performed relatively easily, the attachment and detachment of the pair of long rail portions 90, 90 can also be performed relatively easily.

[0065] Further, as shown in FIGS. 9, 10, and 11(b), a pair of spare outer protruding portions (third protruding portions) 90c, 90c are integrally provided on the outer long sides of each of the pair of long rail portions 90, 90. These spare outer protruding portions 90c, 90c are provided in a state of protruding outward from the outer long sides of each of the pair of long rail portions 90, 09.

[0066] Two outer protruding portions 90c are also provided on each of the pair of long rail portions 90, for example, and a total of four are provided. The positions of the outer protruding portions 90c, 90c in the longitudinal direction of the long rail portion 90 are provided at positions different from the positions of the outer protruding portions 90b, 90b in the longitudinal direction of the long rail portion 90. The outer protruding portion 90c is formed, for example, in a rectangular shape in plan view, and its thickness is, for example, about 6 mm.

[0067] Further, as shown in FIGS. 9, 10, and 11(b), through holes (second through holes) 90ch penetrating the upper and lower surfaces thereof are provided in each of the outer protruding portions 90c, 90c. The through hole 90ch is formed, for example, in a circular shape in plan view. This through hole 90ch is a hole into which an anchor member 92 (see FIG. 12(a)) is inserted. Although there may be a case where reinforcing bars or the like are embedded in the slab SB directly below the through hole 90bh in a predetermined outer protruding portion 90b and the anchor member 92 cannot be driven in, in that case, the anchor member 92 is driven into the slab SB through the through hole 90ch of the spare outer protruding portion 90c instead of the predetermined outer protruding portion 90b, which is a configuration for fixing the long rail portion 90.

[0068] Here, FIG. 13 is an enlarged plan view of a unit rail portion showing an example in which an anchor member is arranged in a spare outer protruding portion, FIG. 14(a) is a cross-sectional view taken along line I-I of FIG. 13, and FIG. 14(b) is a cross-sectional view taken along line III-III of FIG. 13. In FIG. 13, the anchor member 92 is shown in black for easy viewing of the drawing.

[0069] In FIG. 13, a case is illustrated where the anchor member 92 cannot be driven under the upper left outer protrusion 90b. In this case, as shown in FIGS. 13 and 14, instead of the through-hole 90bh of the upper left outer protrusion 90b, the anchor member 92 is driven into the slab SB through the through-hole 90ch of the adjacent spare outer protrusion 90c. Thereby, the long rail portion 90 is fixed to the slab SB in a detachable state.

[0070] Also, as shown in FIGS. 9, 12, 13, and 14(a), the connecting members 91, 91 that constitute the unit rail portion GRU are installed in a detachable state between the pair of long rail portions 90, 90 so as to bridge the pair of long rail portions 90, 90 while extending in a direction intersecting (orthogonal) to the pair of long rail portions 90, 90.

[0071] Each of the connecting members 91, 91 is a member that determines the adjacent interval between the pair of long rail portions 90, 90 and connects the pair of long rail portions 90, 90. The connecting member 91 is made of, for example, a strip-shaped steel plate in plan view, and its overall length is, for example, about 510 mm, the width is, for example, about 50 mm, and the thickness is, for example, about 6 mm.

[0072] In the vicinity of both longitudinal ends of the connecting member 91, through-holes (first fitting portions) 91h that penetrate the upper and lower surfaces thereof are provided. The through-hole 91h is formed, for example, in a circular shape in plan view, and its diameter is larger than the diameter of the protrusion 90ap of the inner protrusion 90a of the pair of long rail portions 90, 90, and is, for example, about 19.5 mm.

[0073] Such a connecting member 91 is installed in a state where both longitudinal ends partially overlap with the inner protrusions 90a, 90a of the pair of long rail portions 90, 90 in plan view, and the protrusions 90ap, 90ap of the inner protrusions 90a, 90a of each of the pair of long rail portions 90, 90 are fitted into the through-holes 91h, 91h in the vicinity of both ends of each of the connecting members 91, 91, thereby being attached in a detachable state. Therefore, the attachment and detachment of the connecting member 91 can be performed relatively easily.

[0074] Further, Fig. 15(a) is an enlarged plan view of the region P surrounded by the broken line at the tip of the long rail portion in Fig. 8, Fig. 15(b) is a plan view of the back surface of the connecting member in Fig. 15(a), Fig. 15(c) is a side view of the connecting member in Fig. 15(b), Fig. 16(a) is an enlarged plan view of the tip of the long rail portion shown with the connecting member in Fig. 15(a) removed, Fig. 16(b) is a cross-sectional view taken along line IV-IV in Fig. 16(a), Fig. 17(a) is a cross-sectional view taken along line IV-IV in Fig. 15(a), and Fig. 17(b) is a cross-sectional view showing the components in Fig. 17(a) disassembled.

[0075] As shown in Figs. 8, 15(a) and 16(a), the long rail portions 90, 90 adjacent to each other in the longitudinal direction of the unit rail portion GRU are installed with their tips butted against each other, and as shown in Figs. 8 and 15(a), they are connected to each other by a pair of connecting members 93, 93. Note that the reinforcing member 94 shown in Fig. 16 is a member for maintaining the L shape of the long rail portion 90, and is joined so as to connect the left and right inclined surfaces of the long rail portion 90.

[0076] As shown in Figs. 15(a), 15(b) and 15(c), the connecting member 93 is made of, for example, a short strip-shaped steel plate in plan view. Its total length is, for example, about 90 mm, the width is, for example, about 20 mm, and the thickness of the plate-like portion is, for example, about 6 mm. As shown in Figs. 15(b) and 15(c), on the back surface (the surface facing the long rail portion 90) of the connecting member 93, near both ends in the longitudinal direction, protruding portions (the third fitting portions) 93p, 93p protruding from the back surface are integrally provided. This protruding portion 93p is formed in a conical shape, for example. Its protruding height is, for example, about 12 mm, and the diameter is smaller than the diameter of the through hole 90h of the long rail portion 90 described above, and is, for example, about 9 mm.

[0077] As shown in FIGS. 16 and 17, such a connecting member 93 is detachably attached by fitting the protruding portions 93p, 93p of the connecting member 93 into the through holes 90h, 90h of each of the adjacent long rail portions 90 along the longitudinal direction of the running rail GR, as shown in FIG. 17(a). Then, when the connecting member 93 is attached, the long rail portions 90, 90 are connected to each other. Since the connecting member 93 is only fitted, it can be attached and detached relatively easily.

[0078] Thus, in this embodiment, since the running rail GR can be carried and assembled in a disassembled state into a pair of long rail portions 90, 90, a connecting member 91, an anchor member 92, and a connecting member 93, the running rail GR can be easily installed at the drilling site.

[0079] Next, an example of the drilling method of the above-described drilling device A will be described with reference to FIGS. 18 and 19.

[0080] FIG. 18(a) is a plan view of the running rail and the drilling device during the drilling operation, and FIG. 18(b) is a plan view of the running rail and the drilling device after the process of FIG. 18(a).

[0081] First, as shown in FIG. 18(a), the running rail GR is laid on the slab at the drilling site. The running rail GR includes, for example, three sets of unit rail portions GRU1, GRU2, GRU3 (GRU). The three sets of unit rail portions GRU1, GRU2, GRU3 (GRU) are arranged side by side along the wall surface SS of the structure S and are connected to each other.

[0082] Here, when the components of the running rail are integrally fixed, if the drilling range length is long, the total length of the running rail becomes long, and it becomes difficult to carry the running rail into the drilling site and install it. This becomes particularly difficult when the drilling site is narrow. In contrast, in this embodiment, since the components of the running rail GR can be carried into the drilling site and assembled in a disassembled state, the running rail GR can be easily installed at the drilling site.

[0083] Subsequently, the drilling device A is mounted on the unit rail portion GRU1 at the leading end of the running rail GR, and the hole H is drilled in the structure S as described above. After that, when the drilling operation on the unit rail portion GRU1 is completed, as shown in Fig. 18(b), the drilling device A is moved onto the adjacent unit rail portion GRU2.

[0084] Next, Fig. 19(a) is a plan view of the running rail and the drilling device after the process of Fig. 18(b), and Fig. 19(b) is a plan view of the running rail and the drilling device after the process of Fig. 19(a).

[0085] After moving the drilling device A to the unit rail portion GRU2 as described above, as shown in Fig. 19(a), the unit rail portion GRU1 is disassembled (dismantled) into a pair of long rail portions 90, 90, connecting members 91, 91, anchor members 92, and a connecting member 93, and then carried to the rearmost end of the running rail GR in the disassembled state. For this reason, the unit rail portion GRU1 can be carried in a relatively small and light state, so the unit rail portion GRU1 can be carried relatively easily even at a narrow drilling site. Note that a filler is embedded in the hole marks from which the anchor members 92 have been removed.

[0086] Subsequently, as shown in Fig. 19(b), while the drilling operation is performed by the drilling device A on the unit rail GRU2, the unit rail portion GRU1 carried to the rearmost end of the running rail GR is assembled.

[0087] As described above, by repeating the drilling operation by the drilling device A and the installation (disassembly, transportation, and assembly) of the unit rail portion GRU of the running rail GR, a plurality of holes are drilled in the entire drilling range of the structure S.

[0088] Thus, in this embodiment, since the unit rail portion GRU1 can be assembled simultaneously with the drilling operation of the structure S, the work efficiency does not significantly decrease just because the unit rail GRU is disassembled, transported, and assembled. That is, the running rail GR can be installed efficiently.

[0089] In addition, since the traveling rail GR can be disassembled, even at a drilling site with a long drilling range length, a long traveling rail is not required, and at least two sets of unit rail parts GRU can be used to handle the situation, so the cost of the traveling rail GR can be reduced. That is, the cost of the drilling operation can be reduced.

[0090] Furthermore, even if the drilling range length varies for each drilling site, there is no need to prepare a specially made traveling rail for each drilling range length, and at least two sets of unit rail parts GRU can handle various drilling range lengths, so it is possible to flexibly respond to differences in the drilling range length for each drilling site. That is, the versatility of the traveling rail GR can be enhanced.

[0091] Here, in the above example, the case where the leading unit rail part GRU1 is transported to the rearmost end of the traveling rail GR and then the drilling operation with the intermediate unit rail part GRU2 is started was described, but it is not limited to this. For example, while performing the drilling operation with the intermediate unit rail part GRU2, the leading unit rail part GRU1 can be disassembled (dismantled), transported to the rearmost end of the traveling rail GR, and assembled at the same time. In this case, since the disassembly (dismantling), transportation, and assembly of the leading unit rail part GRU1 are performed during the drilling operation with the intermediate unit rail part GRU2, the working efficiency can be further improved compared to the above case.

[0092] The invention made by the present inventor has been specifically described based on the embodiments. However, the embodiments disclosed in this specification are illustrative in all respects and are not limited to the disclosed technology. That is, the technical scope of the present invention should not be construed restrictively based on the description in the above embodiments, but should be construed according to the description in the claims. All changes that are equivalent to the technology described in the claims and do not depart from the gist of the claims are included.

[0093] For example, in the above-described embodiment, the case where the traveling rail is configured using an L-shaped long rail portion has been described, but the present invention is not limited thereto and can be variously modified. For example, the traveling rail may be configured by installing an inverted T-shaped long rail portion on the slab.

[0094] Further, in the above-described embodiment, the case where the protruding portion 90ap provided on the inner protruding portion 90a and the through hole 91h provided in the connecting member 91 are fitted together has been described, but the present invention is not limited thereto. For example, a through hole or a recess provided in the inner protruding portion 90a and a protruding portion provided near both longitudinal ends of the connecting member 91 may be fitted together.

[0095] Also, in the above-described embodiment, the case where the through holes 90h provided at both longitudinal ends of the long rail portion 90 and the protruding portion 93p provided in the connecting member 93 are fitted together has been described, but the present invention is not limited thereto. For example, a protruding portion provided at both longitudinal ends of the long rail portion and a through hole or a recess provided in the connecting member 93 may be fitted together.

[0096] Furthermore, in the above-described embodiment, the case where the present invention is applied to a large-scale drilling device having a mechanism for moving a drilling member such as a drifter 30 in the height direction and a mechanism for moving it in the lateral direction has been described, but the present invention is not limited thereto. For example, it can also be applied to a small-scale drilling device having a mechanism for moving the drilling member only in the height direction, and the lateral movement of the drilling member is implemented by moving the entire device along the traveling rail.

Industrial Applicability

[0097] In the above description, the case where the drilling device of the present invention is applied to a traveling rail for a drilling device that drills holes for inserting shear reinforcing bars into an existing concrete structure has been shown, but the present invention is not limited thereto. It can also be applied to a traveling rail for a device other than a drilling device that needs to move the device along the wall surface while ensuring the distance between the wall surface of the structure and the device with relatively high accuracy.

Description of Symbols

[0098] 10 Main body frame 11 Girder member 12 Brace 13 Column member 14 Guide rail 20 Lifting frame 21 Frame rod 30 Drifter 31 Bit 32 Rod 33 Drifter body 40 Transverse member 41 Transverse guide rail 42 Transverse body 43 Transverse motor 44 Ball screw 50 Forward and backward member 51 Forward and backward guide rail 52 Slider 53 Forward and backward motor 54 Endless belt 60 Chain 60a First chain 60b Second chain 61 Lifting motor 61a Driving sprocket 62, 62a, 62b, 62c, 62d, 62e Sprockets 70 Reaction force transmission part 71 Suction pad 72 Slide jack 81 Traveling motor 82 Roller 82a Driving roller 82b Driven roller 83 Belt 84 Traveling drive shaft 90 Long rail part 90a Inner protruding part (first protruding part) 90ap Protruding part (second fitting part) 90b Outer protruding part (second protruding part) 90bh Through hole (first through hole) 90c Spare outer protrusion (third protrusion) 90ch Through-hole (second through-hole) 90h Through-hole (fourth fitting part) 91 Connecting member (first connecting member) 91h Through-hole (first fitting part) 92 Anchor member (fixing member) 93 Connecting member (second connecting member) 93p Protrusion (third fitting part) 94 Reinforcing member A Boring device H Hole R Shear reinforcing bar S Structure SS Wall surface SB Slab GR Running rail GRU, GRU1, GRU2, GRU3 Unit rail part

Claims

1. (a) A process of arranging, along the wall surface, in a side-by-side manner, in a state where two or more unit rail parts constituting a rail for guiding the movement of a drilling device are connected to each other, on a floor portion intersecting the wall surface to be drilled; (b) A process of removing a used unit rail part located at a place where the drilling operation of two or more of the unit rail parts has been completed; (c) A process of transporting the used unit rail part to the rear part of the rearmost unit rail part among the two or more unit rail parts after the process (b); (d) A process of arranging, along the wall surface, in a side-by-side manner, in a state where the rearmost unit rail part and the used unit rail part are connected to each other after the process (c); A method for installing a rail for a drilling device, characterized by comprising the above.

2. A method for installing a rail for a drilling device according to Claim 1, wherein a drilling operation is performed on the wall surface by the drilling device, and at least one of the processes (b) to (d) is performed.

3. The rail is A pair of long rail parts which are members constituting the unit rail part, extend along the wall surface, and are installed on the floor portion in a state of facing each other; A pair of first protruding parts which are integrally provided on each of the pair of long rail parts and protrude inward from each of the pair of long rail parts toward the inside where the pair of long rail parts face each other; A pair of second protruding parts which are integrally provided on each of the pair of long rail parts and protrude outward from each of the pair of long rail parts; A first through hole provided so as to penetrate the upper and lower surfaces of the second protruding part; A fixing member which is a member constituting the unit rail part, is installed on the floor portion through the first through hole of each of the pair of second protruding parts, and fixes the pair of long rail parts to the floor portion in a detachable state; A first connecting member which is a member constituting the unit rail part, is provided between the pair of long rail parts, and is detachably attached to the pair of first protruding parts to connect the pair of long rail parts to each other; A second connecting member which is detachably attached to the tip end portions of each of the long rail parts of the unit rail parts adjacent to each other along the wall surface to connect the long rail parts of the unit rail parts to each other; A method for installing a rail for a drilling device according to Claim 1, characterized by comprising the above.

4. The method for installing a rail for a hole drilling device according to claim 3, wherein a hole drilling operation is performed on the wall surface by the hole drilling device, and at least one of the processes (b) to (d) is performed.

5. The method for installing a rail for a hole drilling device according to claim 3, wherein in the process (b), the pair of long rail portions, the fixing member, the first connecting member, and the second connecting member are disassembled.

6. The method for installing a rail for a hole drilling device according to claim 5, wherein a hole drilling operation is performed on the wall surface by the hole drilling device, and at least one of the processes (b) to (d) is performed.

7. The method for installing a rail for a hole drilling device according to any one of claims 3 to 6, wherein the pair of long rail portions are constituted by L-shaped steel materials, and are installed on the floor portion with the peak side of the L-shaped steel material facing upward.

8. The method for installing a rail for a hole drilling device according to any one of claims 3 to 6, wherein the fixing member is constituted by a screw-type anchor member.

9. The method for installing a rail for a hole drilling device according to claim 8, wherein the pair of long rail portions are constituted by L-shaped steel materials, and are installed on the floor portion with the peak side of the L-shaped steel material facing upward.

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