JP2002038719A - Method and device for cutting deck plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for cutting a deck plate, which is installed easily by a simple device, has a simple structure, can be operated easily even at a construction site and can be manufactured at a low cost and the cost of a series of operation of which can be reduced. SOLUTION: In the method of cutting the deck plate, a cutting hole is bored to a ceiling formed by embedding an embedded metal unified with concrete to the deck plate. The device for cutting the deck plate is secured to the lower section of the ceiling through a tool mounting pedestal. The device for cutting the deck plate is constituted in such a manner that a cutting tool with a rotating blade longer than the irregular height of the deck plate is disposed movably and the deck plate in the lower section of the embedded metal is cut and removed by moving the rotating blade in the lateral direction while being turned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cutting a deck plate, and more particularly to a method and an apparatus for cutting a deck plate forming a ceiling of a concrete building upward by opening.

[0002]

2. Description of the Related Art In general, concrete construction for forming a ceiling of a concrete building such as a nuclear power plant includes a method of laying a deck plate (corrugated steel sheet) on a steel frame and pouring concrete on the deck. Have been. On the other hand, various pipes installed in a building are often arranged near the ceiling, and the pipes are supported by using brackets made of steel suspended from the ceiling. However, since the deck plate is used as a weir frame for receiving concrete before solidification, and the thickness of the steel plate of this deck plate is usually as thin as about 3.2 mm to 6 mm, a bracket for receiving a heavy load is directly welded to the deck plate. If used in such a case, the strength of the deck plate is insufficient, so that a heavy object cannot be held. For this purpose, as shown in FIG. 21, a deck plate 13 is placed on a steel frame 201, and an embedding metal 71 integrated with a concrete 75 on a ceiling surface capable of withstanding a weight is embedded thereon, and a steel material 20
5 is welded to form a bracket 207.
07 supports a heavy object 209 such as a heavy pipe. A columnar member 77 that supports the heavy object 209 and is integrated with the concrete 75 is fixed to the upper side of the embedded metal object 71. When the deck plate 13 is spread over the steel frame 201, the position of the embedded metal 71 is set and fixed at a necessary position by arranging the embedded metal 71 at a necessary position. Attach 73 to the embedded hardware 71
The concrete 75 is flowing after preventing it from flowing underneath. When the concrete 75 has solidified, a scaffold (not shown) is placed near the ceiling to find the position of the embedded metal piece 71 hidden in the deck plate 13, and then the deck plate 13 on the lower surface is removed by a method such as gas cutting. , A steel material 2 that exposes the surface of embedded metal body 71 and supports heavy object 209.
05 is ready to be welded. A steel material 205 is welded to the embedded metal 71 to form a bracket 207 for supporting the heavy object 209.

[0003]

However, in a conventional deck plate cutting operation, the work is to be performed at a high position,
It is necessary to take sufficient safety measures for work using fire, and because the work time set for one place is short and it is necessary to move to another place quickly, the work process It is a difficult task to further improve the work efficiency while protecting. For this reason, development of an automation device is desired, but there are many kinds of problems as follows, and it is difficult to solve the problem that the automation device becomes complicated, heavy, and expensive. Met. There is concrete milk between the embedded metal and the deck plate from the gap of the weir frame.In the case of gas cutting or plasma cutting, the passage of oxygen gas and compressed air is difficult, and the deck plate is cut off. Is difficult. The part where the deck plate and the embedded hardware are in contact
In the case of gas cutting or plasma cutting, it is difficult to pass oxygen gas and compressed air, and it is difficult to cut off the deck plate. Since the deck plate has an upper and lower height of about 10 cm, controlling the torch for gas cutting or plasma cutting along a horizontal plane or an inclined plane is performed by controlling the height of the upper and lower unevenness.
In addition, it is necessary to perform three-dimensional movement control that also controls the angle of the torch on the inclined surface, and it is difficult to provide a device that is complicated, has a structure suitable for a construction site, is easy to move, is small and lightweight, and can withstand various conditions. Upward work can only be performed continuously for a short time of about 5 minutes, even with a lightweight tool. In addition, when using fire, a spark of fire will hit the body, and sufficient safety equipment will be required. Workability decreases with the tool to be used. Circular saw blade saws that do not use fire are difficult to control and have a complicated structure when working upward. In the cutting method using a rotating tool for gripping work, the reaction force that suppresses the bite of the blade is large, and in the case of a small cutting gap, chips are applied to the body at high speed rotation and upward work, etc. However, work is not possible in practice. When working at heights, even if the scaffold floor is sufficient for safety,
Moving up and down to high altitudes and laterally moving at high altitudes are dangerous, so the fatigue increases, and the momentum resting time increases and the work efficiency decreases. At construction sites, it can be used under adverse environmental conditions such as dust, rainwater, moisture, etc., and anyone can easily operate it. There is a demand for a deck plate cutting tool.

The present invention focuses on the above problems, and relates to a method for cutting a deck plate and an apparatus therefor. In particular, it is easy to mount with a simple apparatus, has a simple structure, can be easily operated even at a construction site, and is inexpensively manufactured. It is an object of the present invention to provide a deck plate cutting method and apparatus capable of reducing the cost of a series of operations.

[0005]

In order to achieve the above-mentioned object, a deck plate cutting method according to the present invention has a rotary blade below a ceiling formed by a deck plate, which is longer than the height of the unevenness of the deck plate. The cutting tool is magnetically attached, and the rotating blade is moved while rotating to cut and remove the deck plate. According to the above method, the deck plate can be cut only by moving the cutting tool having a long rotary blade in the lateral direction while rotating the cutting tool.
Since the control of the dimensional movement is not required, the structure and the control are simplified.

A deck plate cutting device according to the present invention comprises:
A cutting tool magnetically attached to the lower part of the ceiling formed by the deck plate and having a rotary blade longer than the height of the unevenness of the deck plate is arranged, and the rotary blade is moved while rotating to cut and remove the deck plate. I have.

The deck plate cutting device magnetically attaches a tool mounting base having a pair of rails to a lower portion of a ceiling formed by embedding metal fittings integrated with concrete into the deck plate, and A cutting tool having a drill blade longer than the height of the unevenness may be movably disposed on the rail, and the drill blade may be moved while rotating to cut and remove the deck plate below the embedded metal object.

Alternatively, the deck plate cutting device magnetically attaches a tool mounting pedestal having a guide corresponding to a cutting shape to a lower portion of a ceiling formed by embedding a metal fitting integrated with concrete in a deck plate. A cutting tool having a drill blade longer than the height of the unevenness of the deck plate is disposed on the guide so as to roll freely, and the drill blade is rotated while rotating to cut and remove the deck plate below the embedded metal object. It may be.

According to the above configuration, the deck plate cutting device magnetically attaches a cutting tool to a lower portion of the ceiling of the deck plate,
Since the cutting plate, which is longer than the height of the unevenness of the deck plate, is moved while rotating to cut and remove the deck plate, the operation of using a fire upward at a high place is unnecessary. Further, since only a two-dimensional movement in which a long cutting tool is moved while rotating is sufficient, the structure can be made simple and lightweight, and complicated control is not required.
Further, by switching the guide, the shape of the cut hole in the deck plate can easily correspond to a circle, a square, an ellipse, or the like.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a deck plate cutting apparatus according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side cross-sectional view during cutting by the deck plate cutting device 1 of the first embodiment, FIG. 2 is a plan view during cutting by the deck plate cutting device 1 of the first embodiment, and FIG. 3 is a first embodiment. FIG. 4 is a sectional view taken along the line AA of FIG. 1 during cutting by the deck plate cutting device 1 of FIG. 5 is a side sectional view of the deck plate cutting apparatus 1 of the first embodiment, FIG. 6 is a partially detailed plan view of a rail portion of the first embodiment, FIG. 7A is a BB sectional view of FIG. And FIG. 7B is a cross-sectional view taken along the line CC of FIG.
The sectional view of the rail section is shown in the sectional view. 8 to FIG.
FIG. 2 is an explanatory diagram of a process of creating a ceiling surface using a deck plate.

1 to 7, in a deck plate cutting apparatus 1 according to a first embodiment, a plurality of magnets 15 are provided in a concave portion 13 a on the lower surface of a deck plate 13 serving as a ceiling 11.
a, 15b, 15c, 15d,... (four in this drawing) are detachably magnetically attached. A plurality of magnets 15a, 1
The tool mounting base 21 of the deck plate cutting device 1 is detachably magnetically attached to the lower surfaces of 5b, 15d,.
The outer shape of the tool mounting base 21 is formed in a rectangular hollow box shape, and the pair of mounting plates 23 of the tool mounting base 21 are magnets 15a, 15b, 15c, and 15d.
.. Magnetically attached to the lower surface of. Also, the tool mounting pedestal 21
A pair of traveling guide rails 27 and 29 are disposed on the lower side of the drawing in parallel with the pair of mounting plates 23 so as to face each other, and the pair of mounting plates 23 and the pair of traveling guide rails 27 and 29 Are connected by the first plate 31. Both ends of the pair of mounting plates 23 and the pair of traveling guide rails 27 and 29 are connected by a second plate 33, and the tool mounting base 21 is formed in a rectangular hollow box shape.

A pair of travel guide rails 27 and 29 are arranged so that the chevron shape acting as a guide inwardly faces each other, and one travel guide rail 27 is fixed to the first plate 31. The other travel guide rail 29 is provided movably toward the one travel guide rail 27. The other travel guide rail 29 has a U-shaped guide 29a fixed to the first plate 31 and a rail 29b in the guide 29a.
Pressed by 9c, it is movably and pivotally inserted toward one traveling guide rail 27. As shown in FIGS. 6 and 7 (b), the guide 29a has a plurality of holes into which the springs 29c are inserted. The springs 29c are inserted into the holes, and the rails 29b are fixed. Pressing force. A first bolt 35 penetrating the guide 29a is attached to the rail 29b, and the first bolt 35 is attached to the rail 29 by a spring 29c.
The escape of b is regulated.

The pair of traveling guide rails 27, 29
Two (four in total) traveling guide wheels 37 each having a V-shaped groove are in contact with each other, and the traveling guide wheels 37 are sandwiched between the pair of traveling guide rails 27 and 29 so as to be able to travel freely. . The traveling guide wheel 37 is the traveling carriage 3
9 and is rotatably supported between the pair of trolley plates 39a and 39b. A cutting tool part 41 of the deck plate cutting device 1 and a traveling handle part 43 for moving the traveling carriage 39 along the traveling guide rails 27 and 29 are attached to the traveling carriage 39.

The cutting tool portion 41 includes a cylindrical body 45 containing an electric motor (not shown) and a pair of bogie plates 39a, 3b.
A long rotary blade 51 which is movably and pivotally inserted into a hole 47 formed in 9b and is held by a tool chuck 49 in the cylindrical body 45 and cuts the deck plate 13 by rotation of an electric motor. Are detachably mounted. The long rotary blade 51 has a blade length (Lc) with respect to the total height (Ha) of the irregularities (peaks and valleys) of the deck plate 13.
Is larger than the total height Ha of the concavities and convexities, so that it can be cut without moving in the vertical direction by moving left and right or back and forth while rotating the peaks and valleys. For example, the long rotary blade 51 is formed of a drill blade such as a straight shank drill, a Morse taper shank drill, or a hand reamer provided with a long blade (hereinafter, the long rotary blade 51 is referred to as the drill blade 51). Outside the cylindrical body 45, a gate-shaped guide frame 53 surrounding the cylindrical body 45 is fixed to the bogie plate 39b.

A second bolt 55 for adjusting the height of the cylindrical body 45 and a nut 57 are screwed into the guide frame 53. The second bolt 55 is screwed into the guide frame 53 and the nut 57, and the tip 55 a of the second bolt 55 is in contact with the cylindrical body 45.
That is, the height of the tip of the drill blade 51 is adjusted according to the concave portion of the deck plate 13 to be cut, and is positioned by the nut 57. The second bolt 55 is connected to the cylindrical body 4.
5, the tool chuck 49, the weight of the drill blade 51, and the reaction force when the drill blade 51 cuts the deck plate 13. On the outer periphery of the cylindrical body 45, a rod 59 to be inserted into a long hole 53b opened in the guide frame 53 is fixed. The rod 59 moves vertically in the elongated hole 53 b to guide the adjustment movement of the cylindrical body 45, and receives a reaction force when the drill blade 51 cuts the deck plate 13 together with the guide frame 53.

The traveling handle 43 includes a traveling rod 61.
Is fixed to one of the traveling guide wheels 37, and transmits the rotation of the traveling handle 63 to the traveling guide wheels 37. The traveling rod 61 is supported by a traveling bracket 65 fixed to the guide frame 53 below the illustrated figure, and an arm 67 is attached to an end of the traveling rod 61.
A traveling handle 63 is attached via the. The traveling cart 39 rotates along with the traveling guide rails 27 and 29 by rotating the traveling handle 63 so that the traveling guide wheels 37 rotate. Therefore, the traveling carriage 39 moves along the traveling guide rails 27 and 29, so that the drill blade 51 can cut the deck plate 13 along the traveling guide rails 27 and 29.

Next, steps from the formation of the ceiling 11 to the cutting of the deck plate 13 will be described with reference to FIGS. The ceiling 11 is provided with a marking Mk at a place where the embedded metal object 71 is installed on the upper surface of the deck plate 13 as shown by a dotted line in FIG. Next, as shown in FIG. 9, an embedded metal piece 71 is installed at a predetermined height on the upper surface of the deck plate 13 at a position where the marking Mk is provided. Embedded hardware 7
A plurality of weir frames 73 corresponding to the shape of the deck plate 13 to be installed are fixed downward on the outer periphery of 1.

The weir frame 73 has a predetermined height Sa of the embedded hardware 71.
Is set, and the concrete 75 is prevented from flowing into the lower side of the embedded hardware 71. The predetermined height Sa of the weir frame 73 is a concave (valley) and a convex (mountain) of the deck plate 13.
Is set higher than the height Hb (shown in FIG. 1).
For this reason, by setting the weir frame 73 to the height Hb of the predetermined height Sa, the gap Na (shown in FIG. 1) is formed between the lower surface of the embedded hardware 71, the deck plate 13, and the protrusion (mountain). Is formed, and when a drill blade 51 described later cuts the deck plate 13, the drill blade 51 can be cut without abutting against the embedded hardware 71.

A cylindrical member 7 having a stepped portion 77a having a large cylindrical diameter Qa is provided above the embedded metal member 71.
7 is fixed. As shown in FIG. 10, as shown in FIG. 10, after reinforcing bars 79 are arranged vertically and horizontally on the upper side of the embedded hardware 71 and joined by wires (not shown), as shown in FIG. A ceiling 11 is formed. At this time, when the concrete 75 is poured onto the deck plate 13 and solidified, the protrusion of the step portion 77a becomes an anchor in the concrete 75 so that the embedded metal 71 does not fall. Has been. In this manner, the bracket 20 supporting the heavy object 209 such as the pipe disposed near the ceiling 11 is provided.
The ceiling 11 in which the metal fitting 71 to which the metal 7 is welded is embedded is formed.

Next, a process of forming a cut hole 85 shown in FIG. 12 in the deck plate 13 of the ceiling 11 to expose the surface of the embedded metal piece 71 to which the bracket 207 is welded will be described. First, the ceiling 1 on which the embedded hardware 71 is laid
After hanging a scaffold (not shown) so as to reach No. 1, below the position where the marking Mk of the embedded hardware 71 shown in FIG.
A magnet 15a is provided in a concave portion on the lower surface of the deck plate 13,
15b, 15c and 15d are magnetically attached. For example, the magnets 15 a, 15 b, 15 c, and 15 d are used to cut the first cut portions Ra (shown in FIG. 2) of the deck plate 13 so that the magnets 15 a, Magnetically attached to

The magnets 15a, 15b, 15c, 15
d, the first cut portion Ra of the deck plate 13
Then, the mounting plate 23 of the deck plate cutting device 1 is magnetically attached in accordance with the magnet so as to cut. Next, at the start of cutting, the tip of the drill blade 51 is indicated by a dotted line C in FIG.
As shown by p, inside the weir frame 73, the deck plate 1
The position of the convex portion (upward valley) on the upper surface of 3, for example, a position lowered by about 1 mm to 2 mm from the lower surface, is set as a start position. When the deck plate cutting device 1 is attached, the positioning is performed by the nut 57 while adjusting the height of the tip of the drill blade 51 by rotating the second bolt 55 so as to make a hole in the projection on the upper surface of the deck plate 13. When a hole is formed in the projection on the upper surface of the deck plate 13, the traveling handle 63 is rotated, the traveling carriage 39 is moved along the traveling guide rails 27 and 29, and the electric motor is rotated to rotate the deck with the drill blade 51. The first cut portion Ra of the plate 13 is cut.

Next, as shown in FIG. 2, the deck plate cutting device 1 is moved so as to cut the second cut portion Rb of the deck plate 13, and magnets 15a, 15b, 15c and 15d are attached to the deck plate 13. Installed via After being attached, the traveling carriage 39 is moved and the electric motor is rotated to cut the second cut portion Rb of the deck plate 13 with the drill blade 51 in the same manner as described above. Such cutting is performed by the third cutting portion Rc and the fourth cutting portion Rd.
As shown in FIG. 12, the cut portion 13A of the deck plate 13 of the ceiling 11 below the embedded metal piece 71 is easily cut and removed, and a cut hole 85 is formed in the deck plate 13. In the above description, the magnet is moved in accordance with the cutting, but the magnet may be entirely installed in accordance with the cutting position from the beginning.

As described above, the deck plate cutting device 1
The cutting method by the lower part of the ceiling formed by embedding metal fittings integrated with concrete on the deck plate,
Magnetically attach a tool mounting pedestal having a pair of rails to which a cutting tool having a drill blade longer than the uneven height of the deck plate is mounted, and move the drill blade while rotating to cut the deck plate below the embedded hardware. Can be removed.

As described above, by using the deck plate cutting device 1 that is detachable from the magnet 15 and using a simple device that is manually moved, mounting is easy.
It is possible to provide a device for cutting the deck plate 13 which has a simple structure and can be easily operated even at a construction site, and can reduce operation costs. The lateral movement while rotating the drill bit can also be performed by operating the motor from outside as described later.

FIG. 13 is a side sectional view of the deck plate cutting apparatus 1A of the second embodiment during cutting, and FIGS. 14 and 15 are plan views of the deck plate cutting apparatus 1A of the second embodiment during cutting. . Further, in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

13 to 15, in the deck plate cutting apparatus 1A of the second embodiment, a center magnet 15A is provided on a central convex portion 13b on the lower surface of the deck plate 13 serving as the ceiling 11, and the deck plate 13 is provided on both sides thereof. A plurality of magnets 15a, 15b, 15
c, 15d,... (two in this figure) are magnetically attached. A center magnet 15A and a plurality of magnets 15a, 15
A tool mounting pedestal 21A of the deck plate cutting device 1A is magnetically attached to the lower surface of b. The tool mounting base 21A is
A center support 91 made of a circular plate is provided on the lower surface of the center magnet 15A.
Two free mounting brackets 93 each made of a rectangular plate are magnetically attached to the lower surface of 15b (two in total).
The tool mounting pedestal 21 </ b> A has one end of an apparatus mounting bolt 95 screwed to each free mounting bracket 93 and is fixed by a lock nut 97. A pedestal plate 99 made of a rectangular plate penetrates the other end of the device mounting bolt 95, and both sides thereof are screwed together with a lock nut 97 and a mounting adjustment nut 101 so as to be vertically adjustable as shown. Is being worn. With the above configuration, the tool mounting base 21A is formed in a hollow box shape.

Center support 91 of tool mounting base 21A
Is fixed to one end of the fixed shaft 103, and the other end of the fixed shaft 103 penetrates the pedestal plate 99. And the center shaft lock nut 10
7 at an adjustment position. A center shaft 109 is screwed and attached to the clamping nut 105 and the center shaft lock nut 107. The center shaft 109 adjusts the position of the clamping nut 105 to the pedestal plate 99 and locks the center shaft. The clamping nut 105 is screwed into the nut 107 and fixed at the adjusted position.

A rotary shaft 111 is pivotally inserted around the fixed shaft 103 via a rotary bearing (not shown). An arm 113 having a U-shape in plan view is fixed to the outer periphery of the rotating shaft 111 at a substantially central portion thereof, and an arm driving gear 115 is fixed to the rotating shaft 111 in the vicinity of the other lower end in the drawing. The arm driving gear 115 is connected to the arm rotation driving device 11.
7 is engaged with an arm gear 119 attached to an output shaft 117a of the motor 7, and receives rotation of a drive motor (not shown) of the arm rotation drive device 117 to drive the rotation shaft 111. The arm rotation driving device 117 is attached to the illustrated lower surface 99 a of the pedestal plate 99. The output shaft 117a penetrates the pedestal plate 99 and the upper surface 9 of the pedestal plate 99.
9b is supported by an output shaft bracket 121 attached to the output shaft 9b.

In FIG. 14, a U-shaped arm 113 is formed.
Between a pair of opposed plates 113a constituting
A hollow box-shaped arm box 123 is inserted pivotally and freely in and out. The arm box 123 is a pair of plates 123a opposed to each other and slidably sandwiched between the pair of plates 113a of the arm 113 in plan view (FIG. 14), and two plates 123 arranged between the two plates 123a to connect the two plates 123a. It consists of connecting plates 123b and 123c. One connecting plate 123b is connected at a substantially central portion of the pair of plates 123a, and the other connecting plate 123c is connected at an end of the pair of plates 123a, and a spring 125 is provided at a substantially central portion in the vertical direction. A hole for storing is formed. The spring 125 is housed in the arm box 123, and has one end face connected to one connecting plate 123b.
In addition, the other end surface is held in contact with a support plate 129 that is in contact with the rotation shaft 111. Spring 125
Is pressed against the arm box 123 to slide the arm box 123 freely in and out of the U-shaped arm 113.

A cylindrical body 131 containing an electric motor (not shown) for rotating the drill blade 51 is fixedly provided at the left end of the arm box 123 in the figure. At both ends of the cylindrical body 131,
Guide rollers 133 are rotatably attached to the upper and lower ends of the arm box 123, respectively. At one end of the cylindrical body 131, above the figure, the deck plate 1 is held by a tool chuck 49, and is rotated by an electric motor.
A drill blade 51 for cutting 3 is detachably mounted. Also, at the other end of the cylindrical body 131, below the drawing,
The rotating ball 13 which abuts on the pedestal plate 99 and supports a drive motor (not shown) housed inside the cylindrical body 131.
5 is attached. Cylindrical body 131 and rotating ball 135
A vertical adjustment nut 137 that moves and adjusts the drill bit 51 in the vertical direction is disposed between the nut 137 and the nut 137. By rotating the nut 137 for vertical movement, the drive motor (not shown) housed in the cylindrical body 131 is moved vertically without rotating, and the drill blade 51 is moved and adjusted vertically.

Outside the guide roller 133, a square cutting guide 139 which the guide roller 133 abuts and rotates and guides.
Are fixed to the illustrated upper surface 99b of the pedestal plate 99. The square cutting guide 139 is formed in a rectangular shape having an arc at a corner. The guide roller 133 is pressed by the square cutting guide 139 by the spring 125,
The rotation force of the arm rotation driving device 117 is received via the arm 113 and the arm box 123, and the arm rotation driving device 117 rotates along the square cutting guide 139. With this rotation, the slicing guide 13
By rotating the drill blade 51 in the same shape as the shape of No. 9, the deck plate 13 can be cut into a rectangle having an arc at the corner as shown by the thick line Wa by the drill blade 51.

Next, cutting of the deck plate 13 by the deck plate cutting apparatus 1A of the second embodiment will be described. In the same manner as in the first embodiment, a cutting hole 85 is formed in the deck plate 13 of the ceiling 11 to expose the surface of the metal fitting 71 to which the bracket 207 is welded.
After hanging a scaffold (not shown) so as to reach the ceiling 11 on which the base material 1 is laid, as shown in FIG. A central magnet 15A is provided in the portion 13b,
On both sides, magnets 15a and 15b are magnetically attached to the concave portions 13a on the lower surface of the deck plate 13.

Center magnet 15A and magnet 15
The tool mounting pedestal 21A of the deck plate cutting device 1A is magnetically attached to the lower surfaces of a and 15b. Next, at the start of cutting, the tip of the drill blade 51 is adjusted to the position of the protrusion (upward valley) on the upper surface of the deck plate 13 inside the weir frame 73, as shown by the dotted line Cp in FIG. When the deck plate cutting device 1A is attached, the vertical adjustment nut 137 is rotated to move the drill blade 51 in the vertical direction, and a hole is formed in the projection on the upper surface of the deck plate 13. When a hole is formed in the projection on the upper surface of the deck plate 13, a switch (not shown) is operated to activate the arm rotation driving device 117, and a driving motor (not shown) is rotated. When the arm rotation drive device 117 is activated, the rotation force of the drive motor is transmitted via the arm gear 119 and the arm drive gear 115 to rotate the rotation shaft 111.

When the rotating shaft 111 rotates, the arm 113 and the arm box 123 also rotate. Arm box 12
3 through the arm box 123 with the rotation of the cylindrical body 13.
The guide roller 133 attached to the arm 1 rotates the rotation force of the arm rotation driving device 117 while being pressed by the squaring guide 139 by the spring 125 as described above.
14 through FIG.
5 and sequentially rotates along the inner periphery of the squaring guide 139. With this rotation, the square cutting guide 1
By rotating the drill blade 51 to the same shape as the shape of 39, the deck plate 13 can be cut by the drill blade 51 as shown by the thick line Wa.

FIG. 16 is a plan view showing an embodiment in which the deck plate 13 is cut into another shape using the deck plate cutting apparatus 1A of the second embodiment. In FIG. 14, the squaring guide 139 is formed in a rectangular shape having an arc at the corner, whereas the guide in FIG. 16 is a circular guide formed in a hollow cylindrical shape as shown by a dashed line. 141 is attached to the upper surface 99b of the pedestal plate 99. Thus, the deck plate cutting devices 1A and 1B detachable from the magnet rotate the drill blade 51 to the same shape as the circular guide 141, and
As a result, the deck plate 13 can be cut into a circle as shown by the thick line Wb.

As described above, the deck plate cutting device 1
A cutting method using A or 1B includes a cutting tool having a drill blade longer than the height of the unevenness of the deck plate, and a cutting tool at the lower part of the ceiling formed by embedding metal fittings integrated with concrete in the deck plate. The tool mounting pedestal on which the aligned guide is mounted is magnetically attached, and the drill blade is rotated while rolling to cut and remove the deck plate below the embedded hardware. Further, in the deck plate cutting apparatuses 1A and 1B, the rectangular cutting section 13A (shown in FIG. 12) is cut and attached by detachably attaching the square cutting guide 139 and the circular guide 141 and exchanging them. be able to.

FIG. 17 is a side sectional view of the deck plate cutting apparatus 1B of the third embodiment during cutting, and FIG. 18 is a plan view of the deck plate cutting apparatus 1B of the third embodiment during cutting. In the third embodiment, the same components as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In FIGS. 17 and 18, in the deck plate cutting apparatus 1B of the third embodiment, a center magnet 15A is provided on the central convex portion 13b on the lower surface of the deck plate 13 serving as the ceiling 11, and the deck plate 13 is provided therearound. A plurality of magnets 15a, 15b, 15c, 15d,... (Four in this drawing) are magnetically attached to the concave portion 13a and the central convex portion 13b on the lower surface of the. The tool mounting pedestal 21B of the deck plate cutting device 1B is magnetically attached to the lower surface of the center magnet 15A and the plurality of magnets 15A and 15a. The tool mounting pedestal 1B is provided with a center support 151 having an adjustment screw 151b erected on a circular plate 151a on the lower surface of the center magnet 15A, and a deck on the lower surface of the surrounding magnets 15A and 15a. The mounting plate 153 of the plate cutting device 1B is magnetically attached to the lower surface. A mounting plate 153 is provided on the lower surface of the magnet 15a via a plate-shaped magnet 15W.
And a magnet 15A magnetically attached to the projection 13b,
The height of the magnet 15a magnetically attached to the concave groove is adjusted.

The tool mounting pedestal 1B has an annular circular running guide rail 157 disposed in parallel with each mounting plate 153 on the lower side of the drawing, and the mounting plate 153 and the circular running guide rail 157 are connected to each other. Are connected by a third plate 159, respectively. The circular running guide rail 157 has a mountain shape serving as a guide toward the inside. Four traveling guide wheels 37 each having a V-shaped groove are in contact with the circular traveling guide rail 157 so as to be able to travel freely. Travel guide wheel 3
7 is a pair of carriage plates 39a, 39b of the traveling carriage 39
It is sandwiched between and supported rotatably.
The bogie plate 39a has a center support 15 with adjustment.
1 adjustment screw 151b is screwed, and the adjustment nut 1
The height is adjusted by 61, and the center side magnet 15A and the carriage plate 39a are connected.

The traveling carriage 39 is provided with the cutting tool 41 of the first embodiment and a traveling handle 43A for moving the traveling carriage 39 along the circular traveling guide rail 157. Since the cutting tool part 41 is configured in the same manner as in the first embodiment, a detailed description is omitted. The cutting tool 41 has a rotatable moving rod 165 at one end of the outer periphery.
The moving rod 165 is provided with a moving screw portion 165a and an operation slot 165b, and the moving screw portion 165a is screwed into a moving screw receiving portion 167 fixed to a central portion. The cutting tool part 41 is
By operating the operation slot 165b, the moving rod 165 rotates, and the cutting tool part 41 moves in the left and right direction in the drawing with respect to the moving screw receiving part 167. This allows
The cutting portion 13A of the deck plate 13 of the ceiling 11 is easily cut and removed in an arbitrary size, and a necessary cutting hole 85 is formed in the deck plate 13. Further, a pressing spring 171 and a pressing spring are provided between the pair of bogie plates 39a and 39b so that the traveling guide wheel 37 is pressed so that no gap is generated between the traveling guide wheel 37 and the circular traveling guide rail 157. Receiver 173 and traveling guide wheel pressing member 175
Are arranged.

As in the first embodiment, the traveling handle portion 43A has the traveling rod 61 connected to one of the traveling guide wheels 37.
The rotation of the traveling handle 63 is transmitted to the traveling guide wheels 37. The traveling rod 61 is supported by a traveling bracket 65 fixedly mounted on the bogie plate 39b below the drawing, and the traveling handle 6 is connected to an end of the traveling rod 61 via an arm 67.
3 is attached. The traveling carriage 39 is a traveling handle 6
3, the traveling guide wheels 37 rotate,
It is moving along the circular traveling guide rail 157. For this reason, when the traveling carriage 39 moves along the circular traveling guide rail 157, the circular traveling guide rail 15
Along the 7, the drill blade 51 can cut the deck plate 13 at the circular cut portion 13A.

Next, cutting of the deck plate 13 by the deck plate cutting device 1B of the third embodiment will be described. Similarly to the first and second embodiments, the metal fittings 71 are laid to form cut holes 85 in the deck plate 13 of the ceiling 11 to expose the surface of the metal fittings 71 to which the brackets 207 are welded. After a scaffold (not shown) is hung so as to reach the ceiling 11 that has been set, as shown in FIG. A magnet 15A for the center, and magnets 15a, 15b, 15c, 1
5d, and a magnet 15
A is magnetized.

The magnet 15A and the magnets 15a, 1
The tool mounting base 21B of the deck plate cutting device 1B is magnetically attached to the lower surfaces of 5b, 15c, and 15d. Next, at the start of cutting, the tip of the drill blade 51 is positioned inside the weir frame 73 and the deck plate 13 in the same manner as indicated by the dotted line Cp in FIG.
To the position of the convex portion (upward valley) on the upper surface of. When the deck plate cutting device 1B is mounted, the nut 137 for vertical adjustment is rotated to move the drill blade 51 in the vertical direction.
Drilling is performed on the convex portion on the upper surface of the deck plate 13. When the projection on the upper surface of the deck plate 13 is perforated, the traveling handle 63 is rotated, the traveling carriage 39 is moved along the inner periphery of the circular traveling guide rail 157, and the electric motor is rotated to rotate the drill blade 51. Then, the deck plate 13 is cut into a circular cut portion 13A as shown by a dotted line Wc in FIG.

FIG. 19 is a schematic view showing another embodiment in which the above deck plate cutting devices 1, 1A and 1B are attached to the deck plate 13. In the above embodiment, the magnet 15
Using the tool mounting base 21 of the deck plate cutting device 1
The tool mounting base 181 is formed according to the unevenness of the deck plate 13, and a seal 183 is provided between the deck plate 13 and the tool mounting base 181. A pipe 187 connected to the vacuum pump 185 is mounted on the tool mounting base 181. In this configuration, the air between the deck plate 13 and the tool mounting base 181 is sucked by the vacuum pump 185 to create a negative pressure, and the tool mounting base 181 is attracted to the deck plate 13.

FIG. 20 is a schematic view of cutting the deck plate 13 from the ground using the above-described deck plate cutting device 1, 1A, 1B. For example, the deck plate cutting device 1 is removably mounted on a mounting base 195 disposed above a pole 193 of a ground bogie 191 having a steering device and a driving device (not shown) for ground Gd. This attachment may be performed by magnetic attachment using the magnet 15 in the same manner as in the above embodiment, or by suction using a negative pressure, or
You may fix with a bolt etc. Cutting of the deck plate 13 by the deck plate cutting device 1 is performed by using a pole 193.
Is carried out by a worker on the upper part of the car. Further, as another cutting method, by attaching the deck plate cutting device 1 to the ground vehicle 191, the cutting position of the drill blade 51 of the deck plate cutting device 1 can be controlled by changing the position of the ground vehicle 191. For example, the cutting from the first cutting portion Ra to the fourth cutting portion Rd shown in FIG. 2 can be sequentially performed by changing the position of the ground vehicle 191.

In the above description, the lower surfaces of the magnet 15A and the magnets 15a, 15b, 15c, 15d are
Although the tool mounting pedestal 21 of the deck plate cutting device 1 is mounted in various shapes, the tool mounting pedestal 21 described in each embodiment can be used in combination with an integrated type or a separated plate as appropriate without being limited to the above examples. it can. Although the deck plate cutting devices 1, 1A, and 1B were magnetically attached to the lower part of the ceiling, as shown in FIG. 20, the deck plate cutting devices 1, 1A, and 1B were provided below the ceiling to cut and remove the deck plate. It can be carried out.

As described above, according to the present invention, a cutting tool having a rotary blade longer than the height of the unevenness of the deck plate is provided below the ceiling formed by the deck plate, and the rotary blade is moved while rotating. Since the deck plate is cut and removed, it can be easily mounted with a simple device, has a simple structure, can be easily operated even at a construction site, can be manufactured at low cost, and the cost of a series of operations can be reduced.

[0048]

As described above, according to the deck plate cutting device of the present invention, a cutting tool having a rotary blade longer than the height of the unevenness of the deck plate is provided below the ceiling formed by the deck plate. In order to cut and remove the deck plate by moving the rotating blade while rotating,
When working at high altitudes, no need to use fire,
The hard work for the worker has been eliminated. In addition, since only a two-dimensional movement of moving a long cutting tool while rotating it is sufficient, the structure can be simplified and lightweight, and complicated control is not required.
It can also be cheap. In addition, since the shape of the cut hole of the deck plate can be easily adapted to any of a round shape and a square shape by switching the guide, the shape can be easily selected, and the design and workability at the site can be improved. .

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view during cutting by a deck plate cutting apparatus of a first example according to an embodiment of the present invention.

FIG. 2 is a plan view during cutting by the deck plate cutting device of Example 1 according to the embodiment of the present invention.

FIG. 3 is a side view during cutting by the deck plate cutting device of Example 1 according to the embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 1 according to the embodiment of the present invention.

FIG. 5 is a side sectional view of the deck plate cutting device of Example 1 according to the embodiment of the present invention.

FIG. 6 is a partially detailed plan view of a rail portion of Example 1 according to the embodiment of the present invention.

7 is a sectional view of a rail portion according to the embodiment of the present invention. FIG. 7A is a sectional view taken along line BB of FIG.
FIG. 7B is a sectional view taken along line CC of FIG. 6.

FIG. 8 is an explanatory diagram of a step of marking a position of an embedded metal object on a deck plate.

FIG. 9 is an explanatory diagram of a step of arranging an embedded metal object at a marking position on a deck plate.

FIG. 10 is an explanatory diagram of a process of arranging reinforcing bars vertically and horizontally on a deck plate.

FIG. 11: Pour concrete on the deck plate,
It is explanatory drawing of the process of manufacturing a ceiling.

FIG. 12 is an explanatory diagram of a process when the deck plate is cut.

FIG. 13 is a side cross-sectional view during cutting by the deck plate cutting device of Example 2 according to the embodiment of the present invention.

FIG. 14 is a plan view during cutting by the deck plate cutting device of Example 2 according to the embodiment of the present invention.

FIG. 15 is a plan view of a deck plate cutting device according to a second embodiment of the present invention in the middle of cutting.

FIG. 16 is a plan view of another cut portion by the deck plate cutting device of Example 2 according to the embodiment of the present invention.

FIG. 17 is a side cross-sectional view during cutting by the deck plate cutting device of Example 3 according to the embodiment of the present invention.

FIG. 18 is a plan view during cutting by the deck plate cutting device of Example 3 according to the embodiment of the present invention.

FIG. 19 is a schematic view of another embodiment in which the deck plate cutting device is attached to the deck plate.

FIG. 20 is a schematic diagram of cutting a deck plate from the ground using a deck plate cutting device.

FIG. 21 is a side sectional view illustrating a structure near a ceiling by a conventional deck plate cutting device.

[Explanation of symbols]

1, 1A, 1B ... deck plate cutting device, 11 ...
Ceiling, 13 ... Deck plate, 13A ... Cut section, 1
5, 15A, 15W: magnet, 21, 21A, 2
1B: tool mounting base, 23: mounting plate, 27,
29: travel guide rail, 37: travel guide wheel
39 traveling cart, 41 cutting tool part, 43 traveling handle part, 45 cylindrical body, 49 tool chuck,
51: long rotary blade (drill blade), 71: embedded hardware,
73 ... weir frame, 75 ... concrete, 77 ... cylindrical material, 85 ... cut hole, 93 ... free mounting bracket, 113 ...
... Arm, 117 ... Arm rotation drive, 123 ...
Arm box 133 Guide roller 139 Square cutting guide 153 Circular running guide rail.

Claims (4)

[Claims] 1. A method of magnetically attaching a cutting tool having a rotary blade longer than the height of unevenness of a deck plate to a lower portion of a ceiling formed by the deck plate and moving the rotary blade while rotating to cut and remove the deck plate. A deck plate cutting method characterized by the following. 2. A cutting tool magnetically attached to a lower portion of a ceiling formed by a deck plate and having a rotary blade longer than the height of the unevenness of the deck plate is provided, and the rotary blade is moved while rotating to cut the deck plate. A deck plate cutting device characterized by being removed. 3. A tool mounting pedestal having a pair of rails is magnetically attached to a lower portion of a ceiling formed by embedding metal fittings integrated with concrete in a deck plate, and is longer than the height of the unevenness of the deck plate. A deck plate cutting device, wherein a cutting tool having a drill blade is movably disposed on a rail, and the drill blade is moved while rotating to cut and remove a deck plate below an embedded metal object. 4. A tool mounting pedestal having a guide according to a cutting shape is magnetically attached to a lower portion of a ceiling formed by embedding metal fittings integrated with concrete in a deck plate, and the height of the unevenness of the deck plate is increased. A deck plate having a cutting tool having a drill blade longer than the roller is rotatably arranged on a guide, and rolling the roll while rotating the drill blade to cut and remove a deck plate below the embedded metal object. Cutting device.