JP3278091B2 - Deck plate automatic cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic deck plate cutting apparatus, and more particularly to an embedded metal fitting for attaching a support such as piping to a deck plate serving as a formwork of floor concrete in building a building such as a nuclear power plant. The present invention relates to a deck plate automatic cutting device for forming an opening of a deck plate.

[0002]

2. Description of the Related Art Conventionally, in the construction of a concrete building such as a nuclear power plant, when a concrete floor surface is constructed,
As shown in FIG. 8, first, a deck plate 1 made of a concrete formwork is laid on a surface serving as a ceiling on the lower floor, and
After the reinforcing bars 2 are arranged, the ready-mixed concrete 3 is flown to form the floor surface 4. Unlike the wooden formwork, the deck plate 1 is used as a ceiling material without being removed even after the concrete is cast. Then, as shown in FIG. 9, during this construction, a rectangular plate-shaped embedding metal member 7 for attaching a support 6 such as a pipe 5 arranged along the ceiling is embedded. For this reason, the position of the deck plate 1 in which the embedded hardware 7 is embedded must be cut into a rectangular shape in accordance with the planar shape of the embedded hardware 7 so that the support 5 can be attached later. The broken line portion 8 of the deck plate in FIG. 9 is cut.

Conventionally, the deck plate 1 has been cut by laying the deck plate 1 and then manually cutting the gas at the position of the deck plate 1 in which the metal fitting 7 is to be embedded. Another method is to cut the concrete floor after forming the concrete floor, center the embedded metal 7 on the deck plate 1, arrange the reinforcing bars 2, flow the ready-mixed concrete 3, and cut the concrete floor. Form. Then, an operator was placed on a scaffold assembled on the lower floor of the formed floor 4 to cut the centered deck plate 1 position.

As described above, the conventional cutting of the deck plate has been performed manually.

[0005]

However, in order to cut the deck plate 1 having an uneven surface into a rectangular shape in accordance with the planar shape of the metal fitting 7, an accurate cutting linearity is maintained according to the unevenness. It is necessary to perform cutting while cutting, and there is a drawback that a high skill of a worker who performs the cutting is required and it is troublesome. In addition, the method of cutting the deck plate 1 after forming the concrete floor is that since the ready-mixed concrete flows into the deck plate 1, it is difficult for the gas cutting fire to pass and the cutting is difficult, and the worker works on the scaffold to work upward. It was a burden for the workers because it was forced. In addition, there is a drawback that the work involves danger because the work is performed at a high place.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides an automatic deck plate cutting apparatus which can cut a deck plate accurately and in a short time without skill, and can reduce labor of an operator. The purpose is to provide.

[0007]

According to the present invention , there is provided a stepped vehicle having a plurality of stepped portions, the plurality of wheels being engaged with the edge of a convex portion of a deck plate as a track.
A traveling vehicle guided by a wheel and moving in a Y-axis direction which is a longitudinal direction of the convex portion, and a moving mechanism provided on the traveling vehicle and moving in an X-axis direction and a Z-axis direction orthogonal to the Y-axis direction. A cutting tool supported by the moving mechanism, and a control means for controlling the operation / stop of the cutting operation of the cutting tool and the movement of the traveling carriage, the moving mechanism, The cutting tool cuts the deck plate surface while moving the traveling carriage and the moving mechanism to move the cutting tool along a predetermined cutting shape.

[0008]

According to the present invention, there is provided a traveling cart guided by a plurality of wheels engaged with the edges of the projections of the deck plate as tracks, so as to move in the longitudinal direction of the projections. A Y axis is formed as a base axis for moving in a dimension. Then, the X-axis direction and Z
A moving mechanism that moves in the axial direction is provided, and the cutting mechanism is supported by the moving mechanism. Thus, the cutting tool can be accurately moved linearly or curvedly on the horizontal plane regardless of the unevenness of the deck plate by the horizontal movement of the traveling vehicle in the Y-axis direction and the movement mechanism in the X-axis direction. Further, by the vertical movement of the moving mechanism in the Z-axis direction, the cutting tool can be moved up and down in accordance with the inclination of the convex portion of the deck plate. Therefore, by moving the traveling trolley and the moving mechanism in accordance with the instruction from the control means to move the cutting tool along the predetermined cutting shape, and by activating the cutting operation of the cutting tool to cut the deck plate surface, The deck plate surface can be cut into a predetermined shape according to the unevenness of the plate. Therefore, for example, when cutting a deck plate into a rectangular shape according to the planar shape of an embedded metal object, the cutting tool moves while maintaining accurate linearity and cuts the deck plate into a rectangular shape. Skill can be cut more accurately and quickly without skill compared to cutting by work.
Further, the wheel is formed into a stepped wheel having a plurality of stepped portions.
So that it fits the shape of the edge of the convex part of the deck plate
Can select a stepped portion that is easy to engage
Can be more favorably engaged.

[0009] Further, by rotating the cutting torch as a cutting tool, the torch can be directed at right angles to the slope of the convex portion of the deck plate, so that the cutting becomes easier. Further, when at least one of the pair of wheels of the traveling vehicle is urged toward the other wheel by an elastic member, the width of the top of the convex portion varies somewhat in the longitudinal direction of the convex portion. Even so, the pair of wheels can always be satisfactorily engaged with the projection .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic perspective view of the automatic deck plate cutting device of the present invention. As shown in FIG. 1, the automatic deck plate cutting apparatus of the present invention includes a projection 10 of a deck plate 10.
A traveling vehicle 12 that moves in the Y-axis direction (Y-Y direction in the figure), which is the longitudinal direction of A, and an X-axis direction (XX in the figure) provided on the traveling vehicle 12 and orthogonal to the Y-axis direction. X-axis slider 14 moving in the X-axis direction and a vertical direction (Z-Z in the figure) orthogonal to a horizontal plane formed in the X-axis direction and the Y-axis direction.
Direction), the Z-axis slider 16 and the Z-axis slider 1
6, a cutting torch 22 for plasma cutting rotatably supported via a rotation driving unit 20 at the tip of a hook-shaped arm 18 supported by a traveling carriage 12, an X-axis slider 14, and a Z-axis.
It comprises a movement control of the shaft slider 16, a rotation drive unit 20, and a controller 24 for controlling the operation / stop of the cutting operation of the cutting torch 22.

The traveling vehicle 12 has front wheels 26.
A, 26B and four wheels 26A, 26B, 28A, 28B before and after the rear wheels 28A, 28B are provided, and the wheels 26A, 26B, 28A, 28B
The traveling vehicle 12 is guided in the Y-axis direction which is the longitudinal direction of the convex portion 10A of the deck plate 10 by guiding the traveling vehicle 12 while engaging the edge 10B of the convex portion 10A as a track. Further, on the traveling carriage 12, a rear wheel 28 is provided.
A bogie pulse motor 30 for rotating the A and 28B is provided. Further, the X-axis slider 14 and Z
Each of the shaft sliders 16 is constituted by a feed screw mechanism. That is, guide rails 32 in the X-axis direction are arranged on the traveling vehicle 12, and a feed screw 34 parallel to the guide rail 32 is provided. One end of the feed screw 34 is supported by an X-axis pulse motor 36 that can rotate forward and reverse, and the other end is rotatably supported by a bearing member 37 provided at an end of the guide rail 32. . A nut member 38 that slides along the guide rail 32 is screwed into the feed screw 34, and the Z-axis slider 16 is fixed to the nut member 38. On the other hand, the Z-axis slider 16
A feed screw mechanism similar to that of the X-axis slider 14 is provided in the Z-axis slider body 40, and the feed screw is rotated by a Z-axis pulse motor 42 that can rotate forward and reverse. Also, a hook-shaped arm 18 is attached to a nut member (not shown) screwed into the feed screw.
Is supported, and a cutting torch 22 for plasma cutting, which is a cutting tool, is attached to the distal end of the arm 18 via a rotation drive unit 20. Thereby, the Y-axis direction of the traveling vehicle 12 and X
By the horizontal movement of the shaft slider 14 in the X-axis direction, the cutting torch 22 can be accurately moved linearly or curvedly on a horizontal plane regardless of the unevenness of the deck plate 10. The vertical movement of the Z-axis slider 16 allows the cutting torch 22 to move up and down in accordance with the inclination of the projection 10A of the deck plate 10.

FIG. 2 shows the rear wheels 28A of the traveling carriage 12,
28B is the edge 1 of the projection 10A of the wide deck plate.
FIG. 3 shows a state of engagement with a narrow deck plate 10. FIG.
In FIG. 3, the front wheels 26A and 26B are omitted.
4 is an enlarged view showing the engagement between the rear wheels 28A and 28B of FIG. 2 and the deck plate 10, and FIG.
FIG. 4 is an enlarged view showing engagement between rear wheels 28A and 28B of FIG. 3 and a deck plate 10.

As shown in FIGS. 2 and 3, an axle 44 rotatably supported by the traveling vehicle 12 has a pair of rear wheels 2 attached thereto.
8A and 28B are supported in a state where they are engaged with the two edges 10B and 10B of the projection 10A of the deck plate 10, respectively. Of the pair of rear wheels 28A, 28B, one rear wheel 28A is fixed to one end of the axle 44, and the fixed wheel is hereinafter referred to as a fixed wheel 28A. The other rear wheel 28B is slidably supported by the axle 44, and this slidable wheel is hereinafter referred to as a slide wheel 28B.
Called. A pulley 46 is provided near the fixed wheel 28A of the axle 44, and an endless belt 50 is suspended between the pulley 48 and the pulley 48 provided on the bogie pulse motor 30. Accordingly, the pair of rear wheels 28A and 28B rotate via the endless belt 50 and the axle 44 by the operation of the bogie pulse motor 30, so that the traveling bogie 12 can be run.

On the other hand, a slidable slide wheel 28B
Is urged toward the fixed wheel 28A by a spring 54 interposed between the holding ring 52 slidably provided on the axle 44. The holding ring 52 is provided with a stop screw 56 for fixing the holding ring 52 at an arbitrary position on the axle 44, and a stop screw 5 for fixing the slide wheel 28B at an arbitrary position on the axle 44.
8 are provided. Although not shown, the front wheels 26
Similarly to the rear wheels 28A and 28B, fixed wheels 26A and slide wheels 26B are provided for the wheels A and 26B, and the slide wheels 26B are urged toward the fixed wheels 26A by springs interposed between the holding wheels 26A and 28B. Thereby, the top width L of the projection 10A of the deck plate 10 is obtained.
Even if there is some variation in the longitudinal direction of the protrusion 10A (see FIG. 2), the pair of rear wheels 28A, 28B and the pair of front wheels 26A, 26B always reliably engage with the edge 10B of the protrusion 10A. The maintained state can be maintained, so that the traveling of the traveling vehicle 12 can correctly follow the deck plate 10. Also, slide wheels 26B, 28B
Is provided, the wheel width (the distance between the fixed wheels and the sliding wheels) can be adjusted according to the wide or narrow deck plate 10.

As shown in FIG. 4 and FIG.
6A, 26B, 28A and 28B are formed in a stepped shape having a plurality of, for example, two stepped portions A and B as shown in the figure, and formed so that the radius of curvature of each stepped portion A and B is different. . For example, the radius of curvature of the stepped portion A having a small outer diameter is R
The radius of curvature of the stepped portion B having a large outer diameter is R 'in the figure. Then, R 'is formed larger than R. Thereby, a stepped portion that can be more easily engaged can be selected according to the degree of bending of the edge 10B of the projection 10A of the deck plate 10.

Each of the pulse motors 30, 3 for driving the traveling carriage 12, the X-axis slider 14, and the Z-axis slider 16
The control of the control units 6 and 42 and the control of the cutting torch 22 and the rotation drive unit 20 are program-controlled by the controller 24. Next, the operation of cutting the wide deck plate 10 using the automatic deck plate cutting device of the present invention configured as described above will be described.

FIGS. 6A to 6E show the deck plate 1.
It shows an example of a cutting pattern (a black portion in the figure is cut) at an uneven position of 0. Here, for example, embedding of a concrete floor is performed for unevenness of the deck plate 10 at an arbitrary position. This shows that the cutting pattern changes according to the embedding hardware 60 embedded in the position. As described above, in order to cut the deck plate 10 having irregularities in accordance with the planar shape of the embedded metal object 60 to be embedded in the concrete floor, it was not possible to perform accurate cutting manually, and it took time and effort.

Therefore, according to the automatic deck plate cutting device of the present invention, first, the front wheels 26A of the traveling vehicle 12
26B and the rear wheels 28A, 28B are set on the deck plate 10. That is, as shown in FIG.
Stop screw 56 of holding ring 52 and slide wheel 28B
The stop screw 58 (described in the example of the rear wheel) is loosened to maximize the wheel width, and the spring 54 is set to a free size state.
Next, from the plurality of steps A and B formed on the wheel, a step that matches the degree of bending of the edge 10B of the projection 10A of the deck plate 10 is selected, and the fixed wheel 28A is connected to the edge 10B of the projection 10A.
To be engaged. Next, as shown in FIG. 7B, the slide wheel 28B is slid along the axle 44 to
The slide wheel 28B is fixed by tightening the stop screw 58 in a state of contact with the edge 10B opposite to the fixed wheel 28A of 0A. Next, as shown in FIG.
4 and the holding ring 52 are slid so that the sliding wheel 2
Lightly abut 8B. Next, as shown in FIG. 7D, the pressing ring 52 is further slid toward the fixed wheel 28A to compress the size of the spring 54 from the free size state to about half, and then the stop screw of the pressing ring 52 is stopped. 5
6, the holding ring 52 is fixed. Finally, the stop screw 58 of the slide wheel 28B is loosened. Thus, as described above, since the slide wheel 28B is constantly urged toward the fixed wheel 28A by the spring 54, the top width L of the convex portion 10A of the deck plate 10 varies slightly in the longitudinal direction of the convex portion 10A. Even if there is, the traveling vehicle 12 travels linearly without any run-out. Therefore, a Y-axis serving as a base axis for moving the cutting torch 22 in three dimensions can be formed.

Next, in accordance with an instruction from the controller 24, the traveling carriage 12 and the X-axis slider 14 move to move the cutting torch 22 to a cutting start position of the deck plate 10. Next, in synchronization with the cutting operation of the cutting torch 22, the traveling carriage 12 and the X-axis slider 14 are moved by a predetermined distance to cut the deck plate 10 surface into a predetermined shape. At this time, when cutting the inclination of the projection 10A of the deck plate 10, the cutting torch 22 can be moved according to the inclination of the projection 10A by moving the Z-axis slider 16 up and down. Furthermore, the direction of the cutting torch 22 is
By rotating the projection in a direction perpendicular to the inclined surface of the projection 10A, the cutting can be more easily performed.

As described above, the automatic deck plate cutting apparatus of the present invention can be operated independently of the unevenness of the deck plate 10 by the horizontal movement of the traveling carriage 12 in the Y-axis direction and the X-axis slider 14 in the X-axis direction. The cutting torch 22 can be accurately moved linearly and curvedly on a horizontal plane. In addition, the vertical movement of the Z-axis slider 16 and the rotation of the cutting torch 22 of the rotation drive unit 20 allow the cutting torch 22 to be moved up and down and rotated according to the inclination of the projection 10A of the deck plate 10. Accordingly, for example, when the deck plate 10 is cut into a rectangular shape of the embedded hardware 60 to be embedded in the concrete floor, regardless of the unevenness of the deck plate 10, it is accurately and quickly cut into the rectangular shape that is the planar shape of the embedded hardware 60. can do. Therefore, according to the deck plate automatic cutting device of the present invention, skill is not required,
In addition, the deck plate 10 can be cut accurately and in a short time, and since it is automatically cut, the labor of the operator can be reduced. Also,
Unlike a conventional cutting operation, there is no need for an operator to perform a cutting operation on a scaffold, so there is no danger of falling or the like, and it is economical because no manual operation is required. In addition, since it is automatically cut, work can be performed even in bad weather.

[0021] In the present embodiment, not only the de Kkipureto 10, it can be applied to cutting of flat plate or the like, depending on the program of the controller 24. In the present embodiment, the automatic control of the deck plate cutting apparatus has been described as a program. However, for example, a joystick apparatus may be provided and controlled manually.

[0022]

As described above, according to the automatic deck plate cutting device of the present invention, the deck plate is guided by a plurality of wheels engaged with the edges of the projections as tracks, and is guided in the longitudinal direction of the projections. A traveling carriage is provided, a Y-axis serving as a base axis for moving the cutting tool in three dimensions is formed, and a traveling mechanism is provided on the traveling carriage in the X-axis direction and the Z-axis direction. And a cutting tool supported by the cutting tool. In addition, the wheel has a step having a plurality of stepped portions.
With wheels.

As a result, the automatic deck plate cutting apparatus of the present invention can cut the deck plate accurately and in a short time without any skill, and can reduce the labor of the operator because of the automatic cutting. Further, unlike the conventional cutting, there is no need for the worker to perform the cutting work on the scaffold, so that there is no danger of falling down and there is no need for human labor, which is economical. In addition, since it is automatically cut, work can be performed even in bad weather. In addition, the wheel is stepped with multiple stepped parts
Because it was formed on wheels, the shape of the edge of the convex part of the deck plate
It is possible to select a stepped part that is easy to engage in accordance with
It can be engaged to further good good wheels pairs.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an automatic deck plate cutting device according to the present invention.

FIG. 2 is an explanatory diagram illustrating engagement between a wide deck plate and wheels of a traveling vehicle.

FIG. 3 is an explanatory view illustrating engagement between a narrow deck plate and wheels of a traveling vehicle.

FIG. 4 is an explanatory diagram for explaining an engagement relationship between a stepped portion having a small radius of curvature of a wheel and a deck plate;

FIG. 5 is an explanatory diagram for explaining an engagement relationship between a stepped portion having a large radius of curvature of a wheel and a deck plate;

FIGS. 6A to 6E are explanatory diagrams illustrating examples of a cutting pattern based on uneven positions of a deck plate.

FIGS. 7A to 7D are explanatory diagrams illustrating an operation procedure for setting wheels of a traveling vehicle on a deck plate.

FIG. 8 is an explanatory view for explaining a concrete floor construction method.

FIG. 9 is an explanatory diagram for explaining the reason for cutting the deck plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Deck plate 12 ... Traveling trolley 14 ... X-axis slider 16 ... Z-axis slider 18 ... Arm 20 ... Rotation drive part 22 ... Cutting torch 24 ... Controller 26A, 26B, 28A, 28B ... Wheel of traveling trolley 30 ... For trolley Pulse motor 34 ... Feed screw 36 ... Pulse motor for X-axis 38 ... Nut member 42 ... Pulse motor for Z-axis 44 ... Axle 52 ... Holding ring 54 ... Spring 56,58 ... Stop screw 60 ... Embedded hardware

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-242898 (JP, A) JP-A-6-39624 (JP, A) JP-A-6-328286 (JP, A) JP-A-7-28 88655 (JP, A) JP-A-52-82116 (JP, A) JP-A-53-35923 (JP, U) JP-A-59-135872 (JP, U) JP-A-3-62674 (JP, U) JP-B-49-1388 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23K 10/00 B23K 9/00 B23K 9/12 B23K 9/127

Claims (3)

(57) [Claims] A stepped wheel having a plurality of stepped portions, the wheels being engaged with the edge of a convex portion of a deck plate as a track .
Y is guided by the can wheel in the longitudinal direction of the convex portion
A traveling vehicle that moves in the axial direction; a moving mechanism that is provided on the traveling vehicle and moves in the X-axis direction and the Z-axis direction that is orthogonal to the Y-axis direction; a cutting tool supported by the moving mechanism; Operation and stop of the cutting operation of the tool and the traveling carriage,
Control means for controlling the movement of the moving mechanism, wherein the cutting is performed while moving the traveling carriage and the moving mechanism to move the cutting tool along a predetermined cutting shape according to an instruction from the control means. An automatic deck plate cutting device, wherein the deck plate surface is cut with a tool. 2. The automatic deck plate cutting apparatus according to claim 1, wherein said cutting tool is a cutting torch rotatably supported by said arm. 3. The automatic deck plate cutting apparatus according to claim 1, wherein at least one of the pair of wheels is urged toward the other wheel by an elastic member.