JP2019136840A - Cutting device - Google Patents

Abstract

To provide a cutting device capable of safely cutting a hanging piece or the like by moving a rotary cutter along a straight track.SOLUTION: A cutting device which includes a fixed rail removably fixed and installed near an erected object as a cutting object, and a movable body part movable in the linear direction along the fixed rail is such that: the movable body part has a rotary cutter exposing one part at a lateral side opposite to the fixed rail, and a drive part for rotatably driving the rotary cutter; and the movable body part moves in the linear direction along the fixed rail in a state that the rotary cutter is rotatably driven by the drive part so that the rotary cutter exposed at a lateral side opposite to the fixed rail can cut the erected object.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a cutting device for cutting a standing object. In particular, the present invention relates to a cutting device for cutting a suspension piece welded to the building steel material in order to suspend the building steel material.

  Conventionally, gas fusing has been used to cut the suspension piece, but in recent years, cutting using a rotary blade has begun to be used.

  For example, in Patent Document 1, as shown in FIG. 16, an operation unit 57 having a rotary circular blade 58 is rotatable with respect to the fixed unit 51, and the operation unit 57 is rotated while rotating the rotary circular blade 58. A cutting device for cutting the suspension piece 60 by rotating 57 with respect to the fixed portion 51 is disclosed.

Japanese Patent No. 4722788

  However, in the configuration described in Patent Document 1 in which the operation unit 57 is rotated with respect to the fixed unit 51, the load applied to the rotation center is large due to resistance at the time of cutting the suspension piece 60, and the suspension piece 60. There is a concern that the fixing portion 51 may be detached from the building member during the cutting operation. This can lead to inconvenience that the work is interrupted and a danger to the worker.

  The inventors of the present invention have found that the trajectory for moving the rotary blade with respect to the suspension piece is more effective in enduring resistance or the like when the suspension piece is cut, instead of the circular arc trajectory. I found out. And the earnest examination has been repeated about development of the structure which can move a rotary blade along a linear track.

  The present invention has been created based on the above findings. The objective of this invention is providing the cutting device which can cut | disconnect a hanging piece etc. safely by moving a rotary blade along a linear track.

  The present invention comprises a fixed rail that is detachably fixedly installed in the vicinity of a standing object as an object to be cut, and a movable main body that is movable in a linear direction along the fixed rail. Has a rotary blade partially exposed on the side opposite to the fixed rail, and a drive unit that rotationally drives the rotary blade, and the rotary blade was rotationally driven by the drive unit In this state, the movable main body moves in a linear direction along the fixed rail, so that the rotary blade exposed on the side opposite to the fixed rail can cut the standing object. Is a cutting device characterized by

  According to the present invention, the movable blade is moved linearly along the fixed rail while the rotary blade is rotationally driven by the drive unit, so that the rotary blade exposed on the side opposite to the fixed rail stands. The structure can be cut. According to such a cutting mode, resistance or the like at the time of cutting the standing object can be effectively received by the fixed rail, so that the standing object can be safely cut.

  Preferably, the movable main body is separable from the fixed rail, and the movable main body and the fixed rail can be transported separately from each other.

  According to this, handling (especially transportation and storage) of a movable main-body part and handling (especially transportation and storage) of a fixed rail are easy. Also, a plurality of types (for example, a plurality of sizes) of fixed rails may be prepared for the common movable main body, and a suitable combination may be appropriately selected and used according to the cutting condition of the standing structure. Is possible. Furthermore, depending on the case, it is also preferable to prepare a plurality of types of movable main body portions.

  It is preferable that the movable body portion is provided with a handle for manually applying a force for moving the movable body portion in a linear direction along the fixed rail.

  In this case, it is easy for the operator to manually move the movable main body portion along the fixed rail in the linear direction while confirming the cutting state of the standing object.

  The movable main body has a pair of vertical rollers that are supported by rotating shafts extending in the vertical direction, and the fixed rail has a vertical rail surface on which the pair of vertical rollers roll. It is preferable.

  In this case, resistance at the time of cutting the standing object can be effectively received on the vertical rail surface.

  Furthermore, the movable main body portion has a pair of horizontal rollers supported by rotating shafts extending in the horizontal direction, and the fixed rail has a horizontal rail surface on which the pair of horizontal rollers roll. It is preferable.

  In this case, vertical upward vibration or the like due to resistance or the like when cutting a standing object can be effectively received on the horizontal rail surface.

  Further, it is preferable that the pair of vertical rollers and the pair of horizontal rollers are arranged at substantially the same position when viewed in the longitudinal direction of the fixed rail.

  In this case, it is easy to manually operate the vertical roller and the horizontal roller in a well-balanced manner.

  Furthermore, it is preferable that the handle is disposed at a substantially intermediate position between the pair of vertical rollers and the pair of horizontal rollers when viewed in the longitudinal direction of the fixed rail.

  In this case, it is easier to manually operate the vertical roller and the horizontal roller with good balance.

  Moreover, it is preferable that the said fixed rail has a permanent magnet or an electromagnet apparatus which can be fixedly installed in a magnetic material.

  In this case, the fixed rail can be firmly fixed and installed on a construction steel material or the like which is a magnetic material. In particular, it is more preferable that a permanent magnet or an electromagnet device is provided at each of both ends of the fixed rail.

  In the present invention, it is preferable that the rotary blade is configured such that the vertically symmetric inclined blade edge, the upper surface inclined blade edge, and the lower surface inclined blade edge repeatedly appear in this order. According to the verification by the present inventors, when such a cutting edge shape is adopted, the cutting performance is very good.

  According to the present invention, the movable blade is moved linearly along the fixed rail while the rotary blade is rotationally driven by the drive unit, so that the rotary blade exposed on the side opposite to the fixed rail stands. The structure can be cut. According to such a cutting mode, resistance or the like at the time of cutting the standing object can be effectively received by the fixed rail, so that the standing object can be safely cut.

It is a top view of the fixed rail of the cutting device of one Embodiment of this invention. It is a front view of the fixed rail of FIG. It is a side view of the fixed rail of FIG. It is a top view of the movable main-body part of the cutting device of this embodiment. It is a front view of the movable main-body part of FIG. It is a side view of the movable main-body part of FIG. It is a bottom view of the movable main-body part of FIG. In the cutting device of this embodiment, it is a top view at the time of starting to move a movable main-body part along the fixed rail fixedly installed in the suitable position with respect to the suspension piece. In the cutting device of this embodiment, it is a front view at the time of starting to move a movable main-body part along the fixed rail fixedly installed in the suitable position with respect to the suspension piece. In the cutting device of this embodiment, it is a side view at the time of starting to move a movable main-body part along the fixed rail fixedly installed in the suitable position with respect to the suspension piece. It is a top view which shows the suitable example of a shape of a rotary blade. It is the elements on larger scale of FIG. FIG. 12 is a front view of a vertically symmetrical inclined cutting edge that is a cutting edge element of the rotary blade of FIG. 11. It is a front view of the upper surface inclination cutting edge which is a cutting edge element of the rotary blade of FIG. FIG. 12 is a front view of a lower inclined blade edge that is a blade edge element of the rotary blade of FIG. 11. It is a top view of the conventional cutting device (it is a figure equivalent to Fig.1 (a) of patent document 1).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view of a fixed rail 10 of a cutting device 1 according to an embodiment of the present invention, FIG. 2 is a front view of the fixed rail 10, and FIG. 3 is a side view of the fixed rail 10. is there.

  As shown in FIGS. 1 to 3, the fixed rail 10 of the present embodiment has a U shape in plan view, and is provided on each of a rail portion 11 extending in the longitudinal direction and both side portions of the rail portion 11. Electromagnet device 12. However, a permanent magnet may be used instead of the electromagnet device 12. The length of the rail part 11 is about 35 cm, for example.

  Each electromagnet device 12 has a substantially rectangular parallelepiped shape, and exerts a magnetic force on the magnetic material at the bottom surface portion by rotating the switch lever 12s. Thereby, each electromagnet apparatus 12 (the bottom face) can be fixedly installed detachably with respect to, for example, building steel.

  A pipe member 14 having a rectangular cross section is passed through a spacer 13 on the upper surface of one side (the lower side in FIG. 1, the front side in FIG. 2, the left side in FIG. 3) of each electromagnet device 12. The lower surface of the tube material 14 functions as a horizontal rail 14r.

  In particular, as shown in FIG. 2, an area between the pair of spacers 13 and the electromagnet device 12 and having a L-shaped cross section on the back side of the lower surface of the tube material 14 (upper side in FIG. 1, right side in FIG. 3). The rail material 15 is fixed. The vertical surface of the rail member 15 functions as the vertical rail 15r.

  On the other hand, the cutting device 1 of the present embodiment includes a movable main body 20 that is movable in a linear direction along the fixed rail 10. The movable main body 20 can be separated from the fixed rail 10, and the movable main body 20 and the fixed rail 10 can be transported separately from each other. 4 is a plan view of the movable main body 20 of the present embodiment, FIG. 5 is a front view of the movable main body 20 of FIG. 4, and FIG. 6 is a side view of the movable main body 20 of FIG. FIG. 7 is a bottom view of the movable main body 20 of FIG.

  As shown in FIGS. 4 to 7, the movable main body 20 of the present embodiment has a substantially rectangular parallelepiped shape opened on the lower side and one side (the lower side in FIG. 4, the near side in FIG. 5, the left side in FIG. 6). A (box-like) sliding portion 21 is provided. Two L-shaped sliding members 22 are fixed to the front surface and the rear surface of the sliding portion 21 in the longitudinal direction. The bottom surface of these L-shaped sliding members 22 is smooth, and the sliding portion 21 can slide on the construction steel material with low resistance.

  A rotary blade 23 is provided in the sliding portion 21. The rotary blade 23 has a diameter of about 185 cm, for example, and is arranged so that a part (for example, about 4 cm at the maximum in the radial direction) is exposed on one side side where the sliding portion 21 opens. The rotary blade 23 is rotated by an electric motor 24 provided on the sliding portion 21. The electric motor 24 is started / stopped by a push switch 24s.

  Further, around the rotary blade 23, a protective cover 25 including a substantially half area of the rotary blade 23 is provided. The protective cover 25 is normally urged to a position shown in FIGS. 4 to 7 by a spring (not shown). When the suspension piece abuts when the suspension piece is cut, the protective cover 25 is pressed by the pressing force of the suspension piece. The rotary blade 23 is further retracted to expose it.

  In addition, a pair of vertical rollers supported on the outer surface of the sliding portion 21 on the side facing the side where the rotary blade 23 is exposed (the upper side in FIG. 4 and the right side in FIG. 6) by the rotary shaft 31 extending in the vertical direction. 32 is provided. These vertical rollers 32 can roll on the vertical rail 15r of the rail member 15. The vertical roller 32 of this embodiment has a width of about 12 mm, a diameter of about 22 mm, and a distance between the pair of rotating shafts 31 of about 16 cm.

  Further, the upper surface of the sliding portion 21 opposite to the side where the rotary blade 23 is exposed (the upper side in FIG. 4, the right side in FIG. 6), and at the positions corresponding to the vertical rollers 32 in the longitudinal direction, A pair of horizontal rollers 34 supported by a rotating shaft 33 extending in the direction is provided. These horizontal rollers 34 can roll on the horizontal rail 14 r of the tube material 14. Similarly to the vertical roller 32, the horizontal roller 34 of the present embodiment has a width of about 12 mm, a diameter of about 22 mm, and a distance between the pair of rotating shafts 33 of about 16 cm.

  The sliding portion 21 of the present embodiment is provided with a handle 35 for manually applying a force for moving the sliding portion 21 in the linear direction along the fixed rail 10. The handle 35 of the present embodiment is located above the upper surface of the sliding portion 21 on the side where the rotary blade 23 is exposed, and includes a pair of vertical rollers 32 and a pair of horizontal rollers 34 as viewed in the longitudinal direction of the sliding portion 21. It is arranged at a substantially intermediate position. This position is a substantially intermediate position of the sliding portion 21 when viewed in the longitudinal direction of the sliding portion 21, and is also a substantially intermediate position of the two L-shaped sliding members 22 at the front and rear. The handle 35 has, for example, a cylindrical shape with a diameter of about 3 cm and a length of about 13 cm, and is preferably disposed substantially horizontally in the short direction of the sliding portion 21 at a height of about 27 cm.

  Next, the usage method (action | operation) of the cutting device 1 of this embodiment as mentioned above is demonstrated.

  For example, when the suspension piece 40 is cut, it is important to fix the fixed rail 10 at a suitable position in accordance with the position of the suspension piece 40. FIG. 8 is a plan view when starting to move the movable main body 20 along the fixed rail 10 fixedly installed at a suitable position with respect to the suspension piece 40, and FIG. 9 is a front view thereof. 10 is a side view thereof.

  8 to 10, the sliding portion 21 (movable main body portion 20) is linearly moved along the fixed rail 10 in the state where the rotary blade 23 is rotationally driven by the electric motor 24 (left in FIGS. 8 and 9). The rotating blade 23 exposed on the side opposite to the fixed rail 10 (the lower side in FIG. 8) can cut the suspension piece 40 by moving in the direction).

  More specifically, as shown in FIGS. 8 to 10, first, the vertical roller 32 and the horizontal roller 34 of the movable main body 20 abut against the vertical rail 15 r and the horizontal rail 14 r of the fixed rail 10. . But the horizontal rail 14r and the horizontal roller 34 may not contact | abut, but the clearance gap may be formed between both. In the movable main body 20, the bottom surface of the L-shaped sliding member 22 is in contact with the construction steel material, and the rotary blade 23 and the protective cover 25 are slightly lifted from the top surface of the construction steel material.

  Then, the pressing switch 24s is operated, and the rotation of the rotary blade 23 by the electric motor 24 is started. In this state, when the handle 35 is slowly pressed, the movable main body 20 moves along the fixed rail 10 in the linear direction (leftward in FIGS. 8 and 9). Along with this, the suspension piece 40 is cut.

  Resistance and vibration during cutting of the suspension piece 40 are effectively received by the vertical rail 15r and the horizontal rail 14r of the fixed rail 10 via the vertical roller 32 and the horizontal roller 34. Accordingly, the cutting of the suspension piece 40 can be realized safely and easily.

  As described above, according to the cutting device 1 of the present embodiment, the movable main body 20 moves in the linear direction along the fixed rail 10 in a state where the rotary blade 23 is rotationally driven by the electric motor 24. The rotary blade 23 exposed on the side opposite to the side 10 can cut the suspension piece 40. According to such a cutting mode, resistance or the like at the time of cutting the suspension piece 40 can be effectively received by the fixed rail 10. Thereby, the suspension piece 40 can be cut | disconnected safely.

  Further, according to the cutting device 1 of the present embodiment, the movable main body 20 can be separated from the fixed rail 10, and the movable main body 20 and the fixed rail 10 can be transported separately from each other. Handling (especially transportation and storage) and handling of the fixed rail 10 (especially transportation and storage) are easy.

  Moreover, according to the cutting device 1 of this embodiment, since the handle 35 for manually giving the force which moves the movable main-body part 20 to a linear direction along the fixed rail 10 is provided, an operator hung up. While confirming the cutting state of the piece 40, it is easy to manually move the movable main body 20 along the fixed rail 10 in the linear direction.

  Further, according to the cutting device 1 of the present embodiment, the movable main body 20 has a pair of vertical rollers 32 supported by the rotation shafts 31 extending in the vertical direction, and the fixed rail 10 is a pair of vertical rollers. Since the roller 32 has the vertical rail surface 15r on which the roller 32 rolls, resistance or the like when the suspension piece 40 is cut can be effectively received on the vertical rail surface 15r.

  Furthermore, according to the cutting device 1 of the present embodiment, the movable main body portion 20 has a pair of horizontal rollers 34 supported by rotating shafts 33 extending in the horizontal direction, and the fixed rail 10 is a pair of horizontal rollers. Since the roller 34 has the horizontal rail surface 14r on which the roller 34 rolls, vertical upward vibration or the like due to resistance or the like when the suspension piece 40 is cut can be effectively received on the horizontal rail surface 14r.

  Further, according to the cutting device 1 of the present embodiment, the pair of vertical rollers 32 and the pair of horizontal rollers 34 are disposed at substantially the same position when viewed in the longitudinal direction of the fixed rail 10. It is easy to manually operate the rolling and the rolling of the horizontal roller 34 with a good balance.

  Furthermore, according to the cutting device 1 of the present embodiment, the handle 35 is disposed at a substantially intermediate position between the pair of vertical rollers 32 and the pair of horizontal rollers 34 when viewed in the longitudinal direction of the fixed rail 10, and thus the vertical rollers 32. It is easier to manually operate the horizontal roller 34 and the horizontal roller 34 in a balanced manner.

  Moreover, according to the cutting device 1 of this embodiment, since the electromagnet apparatus 12 which can be fixedly installed in the construction steel material which is a magnetic material is provided in the both ends of the fixed rail 10, the releasable fixation with respect to a construction steel material is very much. It is solid. However, a permanent magnet may be used instead of the electromagnet device 12.

  In addition, as a shape of the rotary blade 23, it has been confirmed that an aspect as shown in FIGS. 11 to 15 is preferable. 11 is a plan view showing a preferred shape example of the rotary blade, FIG. 12 is a partially enlarged view of FIG. 11, and FIG. 13 is a vertically symmetrical inclined cutting edge 23a which is a cutting edge element of the rotary blade of FIG. FIG. 14 is a front view of the upper inclined blade edge 23b which is the blade edge element of the rotary blade of FIG. 11 (viewed in the direction of arrow D in FIG. 12). 15 is a front view of a lower inclined blade edge 23c that is a blade edge element of the rotary blade in FIG. 11 (viewed in the direction of arrow E in FIG. 12). As shown in FIGS. 11 to 15, when a rotary blade in which the vertically symmetric inclined blade edge 23 a, the upper inclined blade edge 23 b, and the lower inclined blade edge 23 c repeatedly appear in this order is used, the cutting performance is very high. It was good. In addition, the dimension W in a figure is 2 mm, for example.

DESCRIPTION OF SYMBOLS 1 Cutting device 10 Fixed rail 11 Rail part 12 Electromagnet apparatus (a permanent magnet may be sufficient)
12s Switch lever 13 Spacer 14 Tube 14r Horizontal rail 15 Rail material 15r Vertical rail 20 Movable main body 21 Sliding part 22 L-shaped sliding member 23 Rotary blade 24 Electric motor 24s Press switch 25 Protective cover 31 Vertical rotating shaft 32 Vertical roller 33 Horizontal rotating shaft 34 Horizontal roller 35 Handle 40 Hanging piece

Claims (9)

A fixed rail that is removably fixedly installed in the vicinity of a standing object as a cutting object;
A movable main body movable in a linear direction along the fixed rail;
With
The movable main body is
A rotating blade partially exposed on the side opposite to the fixed rail;
A drive unit that rotationally drives the rotary blade;
Have
In a state where the rotary blade is rotationally driven by the drive unit, the movable main body moves in a linear direction along the fixed rail, whereby the rotary blade exposed on the side opposite to the fixed rail is A cutting device characterized in that it can cut a standing object. The movable main body is separable from the fixed rail,
The cutting apparatus according to claim 1, wherein the movable main body portion and the fixed rail are transportable separately from each other. 3. The handle according to claim 1, wherein the movable body is provided with a handle for manually applying a force for moving the movable body in a linear direction along the fixed rail. Cutting device. The movable main body has a pair of vertical rollers each supported by a rotating shaft extending in the vertical direction,
The cutting device according to claim 3, wherein the fixed rail has a vertical rail surface on which the pair of vertical rollers roll. The movable main body has a pair of horizontal rollers each supported by a rotating shaft extending in the horizontal direction,
The cutting device according to claim 4, wherein the fixed rail has a horizontal rail surface on which the pair of horizontal rollers roll. 6. The cutting apparatus according to claim 5, wherein the pair of vertical rollers and the pair of horizontal rollers are disposed at substantially the same position when viewed in the longitudinal direction of the fixed rail. The cutting apparatus according to claim 6, wherein the handle is disposed at a substantially intermediate position between the pair of vertical rollers and the pair of horizontal rollers when viewed in the longitudinal direction of the fixed rail. The cutting device according to any one of claims 1 to 7, wherein the fixed rail includes a permanent magnet or an electromagnet device that can be fixedly installed on a magnetic material. The cutting apparatus according to any one of claims 1 to 8, wherein the rotary blade has a vertically symmetric inclined blade edge, an upper surface inclined blade edge, and a lower surface inclined blade edge that repeatedly appear in the order.

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