JP2017001171A - Cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting machine for cutting a midway portion of H-shaped steel arranged in a horizontal direction into a predetermined width along two cutting lines.SOLUTION: A cutting machine 11 comprises a first cutting member 14 installed at one end side 13a of a flange 13 on a lower side of H-shaped steel 12, and a second cutting member 15 installed at the other end side 13b. The first cutting member comprises: a first fitting part 16; a first holding plate 17 provided continuously to the first fitting part; a driving shaft part 20 movably inserted into the first holding plate; a driving roller 22 provided in a tip part of the driving shaft part; and a first guide shaft part 23 provided in parallel to the driving shaft part. The second cutting member comprises: a second fitting part 24; a second holding plate 25 provided continuously to the second fitting part; a driven shaft part 26 movably inserted into the second holding plate; a driven roller 27 provided in a tip part of the driven shaft part; and a second guide shaft part 28 provided in parallel to the driven shaft part. While the driving roller and the driven roller are simultaneously moved to the flange side on the lower side, a rotary cutter 21 cuts a midway portion of the H-shaped steel into a predetermined width.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cutting machine, and more specifically, cuts a middle portion of an H-shaped steel disposed horizontally in a construction such as a steel structure to a predetermined width along two cutting lines. It relates to a cutting machine.

  As a conventional cutting machine, the thing of the structure shown, for example in FIG. 11 is known. The steel cutting machine 1 includes a main body frame 3 suspended by a hook 2 of a crane, a clamp 5 provided at a lower portion of the main body frame 3 and holding a flange 4a of the steel frame 4, and both ends of the main body frame 3. The slide frame 6 is provided so that it can be extended and contracted, the travel rail 7 can move horizontally along the slide frame 6, and the cutting burner 8 can move vertically along the travel rail 7 (Patent) Reference 1).

  The cutting machine 1 having such a configuration is hung with a hook 2 of a crane and installed at a predetermined steel frame position, holds a flange 4a with a clamp 5, extends a slide frame 6, and then moves a traveling rail 7 to a predetermined position. The desired portion is cut by horizontally moving to a position and moving the cutting burner 8 vertically.

JP 2007-146571 A

  In the steel cutting machine 1 of this conventional example, the apparatus is large and a crane is required for installation. Therefore, there is a problem that installation and operation are troublesome and quick work is difficult.

  Moreover, since the cutting burner 8 is used for cutting the steel frame, there is a risk of fire, and since a gas cylinder for supplying gas to the cutting burner 8 is provided, there is a safety problem. Yes.

  Therefore, in the steel cutting machine 1 in the conventional example, the installation and operation can be easily performed, and the middle part of the H-shaped steel disposed in the construction can be easily and safely cut. And to solve the safety problems caused by the use of fire.

  The gist of the present invention for solving the problems of the conventional example is that a first cutting member installed on one end side of the lower flange of the H-shaped steel arranged in the horizontal direction and a first cutting member installed on the other end side. The first cutting part is a cutting machine that has two members, two cutting members, and cuts the middle part of the H-shaped steel into a predetermined width, wherein the first cutting member is detachably attached to one end side of the flange. A first holding plate that is connected to the first mounting portion; a drive motor that is movably inserted through the first holding plate; a drive motor at the rear end; and a tip that is positioned beyond the upper flange. A shaft portion, a drive roller provided at a tip portion of the drive shaft portion and around which a rotary cutter is wound, and a drive roller which is arranged in parallel with the drive shaft portion and is movably inserted into the first holding plate. A first guide shaft portion that guides movement of the portion, and the second cutting member is a member other than the flange. A second mounting portion that is detachably attached to the side, a second holding plate that is connected to the second mounting portion, and a second holding plate that is movably inserted into the second holding plate, with the tip portion positioned beyond the upper flange. A driven shaft portion, a driven roller provided at a distal end portion of the driven shaft portion and around which the rotary cutter is wound, and arranged in parallel with the driven shaft portion, movably inserted through the second holding plate, and A second guide shaft portion that guides the movement of the driven shaft portion, and simultaneously moves the drive roller and the driven roller to one flange side so that the rotary cutter makes the intermediate portion of the H-shaped steel a predetermined width. It is the structure to cut | disconnect.

In addition, a bolt to be brought into contact with the side portion of the flange is screwed to the side portion of the second mounting portion, and the position of the second mounting portion is adjusted by screwing in the bolt, and the tension of the rotary cutter is increased. A configuration that adjusts the condition;
The rotary cutter is configured to simultaneously cut two cutting lines along the short direction of the H-shaped steel;
Is included.

According to the cutting machine according to the present invention, the first attachment portion is attached to one end side of the flange, the second attachment portion is attached to the other end side of the flange, and then the rotary cutter is wound around the driving roller and the driven roller. Set the cutting machine on the H-section steel. Then, the drive motor is driven to rotate the rotary cutter, and the rotary cutter is lowered by the weight of the cutting machine, thereby cutting an intermediate portion of the H-section steel to a predetermined width along two cutting lines. Can do.
Thus, the cutting machine can be easily attached to the H-shaped steel, and the cutting operation is extremely simple.
Furthermore, since a burner is not used as in the conventional example, there are various dangers that there is no risk of fire and burns and high safety.

  A bolt to be brought into contact with the side portion of the flange is screwed to the side portion of the second mounting portion, and the position of the second mounting portion is adjusted by screwing the bolt to adjust the tension of the rotary cutter. As a result, an excellent effect is obtained that the tension of the rotary cutter can be adjusted to an optimum state by a simple operation.

  Since the rotary cutter is configured to simultaneously cut two cutting lines along the short direction of the H-section steel, the intermediate portion of the H-section steel can be cut into a predetermined width by a single cutting operation. It has an excellent effect of being extremely efficient when performing seismic reinforcement on the part.

It is a front view in the state where cutting machine 11 concerning the present invention was attached to H section steel 12. 2 is a plan view of the cutting machine 11 attached to an H-section steel 12; FIG. FIG. 3 is a bottom view of the cutting machine 11 attached to an H-section steel 12. FIG. 3 is a left side view of the cutting machine 11 attached to the H-section steel 12. 3 is a right side view of the cutting machine 11 attached to the H-section steel 12. FIG. It is the sectional view on the AA line of FIG. It is a front view which shows the state in which the cutting machine 11 cuts the H-section steel. It is a left view which shows the state in which the cutting machine 11 cuts the H-section steel 12. FIG. It is a right view which shows the state in which the cutting machine 11 cuts the H-section steel 12. FIG. It is explanatory drawing of the principal part explaining the position adjustment of the 2nd attachment part 24 by screwing in the volt | bolt 45. FIG. It is a front view of the cutting machine 1 which concerns on a prior art example. It is a front view of the state which attached the fall prevention metal fitting 61 of the cut piece to the H-section steel. It is a right view of FIG. It is a B arrow line view of FIG.

  Next, embodiments of the present invention will be described with reference to the drawings. First, in FIG. 1 to FIG. 5, reference numeral 11 denotes a cutting machine, and this cutting machine 11 is a first cutting installed on one end side 13 a of the lower flange 13 of the H-shaped steel 12 arranged in the horizontal direction. It is a separation-type cutting machine comprised from the member 14 and the 2nd cutting member 15 installed in the other end side 13b.

  The first cutting member 14 is attached to the first mounting portion 16 detachably attached to the one end side 13 a of the lower flange 13, the first holding plate 17 connected to the first mounting portion 16, and the first holding plate 17. A drive motor 18 is provided at the rear end, and the front end is positioned beyond the upper flange 19, and the rotary cutter 21 is hung on the front end of the drive shaft 20. The rotating drive roller 22 is arranged in parallel with the drive shaft portion 20, and includes a first guide shaft portion 23 that is movably inserted into the first holding plate 17 and guides the movement of the drive shaft portion 20.

  The second cutting member 15 includes a second mounting portion 24 that is detachably attached to the other end side 13 b of the lower flange 13, a second holding plate 25 that is connected to the second mounting portion 24, and a second holding plate 25. A driven shaft portion 26 that is movably inserted through the upper flange 19, a driven roller 27 that is provided at the distal end portion of the driven shaft portion 26 and is wound around the rotary cutter 21, and a driven device The second guide shaft portion 28 is arranged in parallel with the shaft portion 26 and is movably inserted into the second holding plate 25 to guide the movement of the driven shaft portion 26.

  The 1st attaching part 16 is formed in prismatic shape, and the groove part 29 is provided in the side surface along the length direction (refer FIG. 1). The groove part 29 is a part which inserts and clamps the one end side 13a of the flange 13, The bolt 30 can be screwed from a side part, and the clamping state can be maintained firmly (refer FIG. 6). Further, when the bolt 30 is loosened, the first attachment portion 16 can be removed from the one end side 13 a of the flange 13.

  The first holding plate 17 is fixed to the side portion of the first mounting portion 16 with screws 31. The first holding plate 17 extends to the other end side, and two insertion holes 32 and 33 are provided on the other end side (see FIG. 1). Insertion tubes 32a and 33a are provided on the rear side of the insertion holes 32 and 33, respectively.

  The drive shaft portion 20 has a predetermined length and is movably inserted into the insertion hole 32. A drive motor 18 is provided at the rear end of the drive shaft 20 via a connecting plate 34 (see FIG. 1). The drive motor 18 is driven and stopped by an ON / OFF switch (not shown).

  Further, the front end portion of the drive shaft portion 20 is connected to the connecting plate 35 and can be positioned beyond the upper flange 19.

  The drive roller 22 is provided at the tip of the drive shaft portion 20, and a rotary cutter 21 is wound around the drive roller 22. The drive roller 22 is configured to rotate in conjunction with the drive of the drive motor 18.

  The first guide shaft portion 23 is movably inserted through the insertion hole 33 of the first holding plate 17, and the rear end portion is connected to the connecting plate 34. Further, the distal end portion of the first guide shaft portion 23 is connected to the connecting plate 35.

  A lock plate 36 is rotatably provided at the end of the first holding plate 17, and a locking portion 48 is provided at the tip of the lock plate 36. A receiving portion 49 is provided at the end of the connecting plate 34. By locking the locking portion 48 of the lock plate 36 to the receiving portion 49, the movement of the first guide shaft portion 23 and the drive shaft portion 20 can be locked (see FIG. 1).

  The 2nd attachment part 24 is formed in prismatic shape, and the groove part 37 is provided in the side surface along the length direction (refer FIG. 1). The groove part 37 is a part which inserts and clamps the other end side 13b of the flange 13, The bolt 38 can be screwed from a side part, and the clamping state can be maintained firmly (refer FIG. 6). Further, when the bolt 38 is loosened, the second mounting portion 24 can be removed from the other end side 13 b of the flange 13.

  The second holding plate 25 is fixed to the side portion of the second mounting portion 24 with screws 39. The second holding plate 25 extends to the other end side, and two insertion holes 40 and 41 are provided on the other end side (see FIG. 1). Insertion tubes 40a and 41a are provided on the rear side of the insertion holes 40 and 41, respectively.

  The driven shaft portion 26 has a predetermined length and is movably inserted into the insertion hole 40. The rear end portion of the driven shaft portion 26 is connected to the connecting plate 42 (see FIG. 1). Further, the distal end portion of the driven shaft portion 26 is connected to the connecting plate 43 and can be positioned beyond the upper flange 19.

  The driven roller 27 is provided at the tip of the driven shaft portion 26, and the rotary cutter 21 is wound around the driven roller 27. Accordingly, the rotational drive of the drive roller 22 is transmitted to the driven roller 27 via the rotary cutter 21. In other words, the rotary cutter 21 rotates at a high speed via the drive roller 22 and the driven roller 27. . The rotary cutter 21 is a wire-type rotary cutter, for example, a wire saw.

  Further, as shown in FIG. 10, a bolt 45 to be brought into contact with the side portion of the flange 13 is screwed to the side portion of the second mounting portion 24. The bolt 45 is screwed to adjust the position of the second mounting portion 24 so that the tension of the rotary cutter 21 can be adjusted. Thus, the tension of the rotary cutter 21 can be adjusted to an optimum state by a simple operation of the bolt 45.

  The second guide shaft portion 28 is movably inserted through the insertion hole 41 of the second holding plate 25, and the rear end portion thereof is connected to the connecting plate 42. Further, the distal end portion of the second guide shaft portion 28 is connected to the connecting plate 43.

  A lock plate 44 is rotatably provided at an end portion of the second holding plate 25, and a locking portion 50 is provided at the tip of the lock plate 44. A receiving portion 51 is provided at the end of the connecting plate 43. By locking the locking portion 50 of the lock plate 44 to the receiving portion 51, the movement of the second guide shaft portion 28 and the driven shaft portion 26 can be locked (see FIG. 1).

  The cutting machine 11 configured as described above attaches the first attachment portion 16 to the one end side 13a of the lower flange 13 and attaches the second attachment portion 24 to the other end side 13b. The rotary cutter 21 is hung around the driven roller 27 to set the cutting machine 11 on the H-section steel 12.

  Then, the driving motor 18 is driven to rotate the rotary cutter 21, and the driving roller 22 and the driven roller 27 are simultaneously moved by the dead weight of the cutting machine 11, that is, the rotary cutter 21 is moved from the upper flange 19 to the lower flange 13. By moving downward (in the direction of arrow B in FIGS. 7, 8, and 9), the rotary cutter 21 cuts the intermediate portion of the H-section steel 12 to a predetermined width (see FIGS. 7, 8, and 9). Thus, the cutting machine 11 can be easily attached to the H-section steel 12, and the cutting operation is simple.

  Moreover, the rotary cutter 21 is a structure which cut | disconnects the two cutting lines 46 and 47 along the transversal direction of the H-section steel 12 simultaneously (refer FIG.2, FIG.8, FIG.9). That is, since the middle part of the H-shaped steel 12 can be cut into a narrow width between the cutting line 46 and the cutting line 47 by a single cutting operation, it is extremely efficient when performing seismic reinforcement on the narrow cutting part. It is.

  Next, the fall prevention metal fitting 61 of a cut piece is demonstrated. As shown in FIGS. 12 to 14, the fall prevention fitting 61 is a metal material having a predetermined length, and has a groove 62 and is formed in a U shape. The end of the flange 19 is sandwiched by the groove 62, and the bolt 63 is screwed from the side to maintain the fixed state.

  A method of using the drop prevention fitting 61 will be described. One end side 19a and the other end side of the upper flange 19 are in a state where the two cutting lines 46 and 47 are being cut as described above and the cutting lines 46 and 47 are straddled (see FIGS. 13 and 14). The groove 62 is fitted into 19b, and the bolt 63 is screwed to maintain the fixed state.

  If the fall prevention fitting 61 is attached in this way, even when the rotary cutter 21 has finished cutting to the lower flange 13 along the two cutting lines 46, 47, the cutting inside the cutting lines 46, 47 is performed. The piece 64 does not fall. Thereafter, the bolt 63 is loosened, the fall prevention fitting 61 is removed, and the cut piece 64 is removed.

DESCRIPTION OF SYMBOLS 1 Cutting machine 2 Hook 3 Body frame 4 Steel frame 4a Flange 5 Clamp 6 Slide frame 7 Running rail 8 Cutting burner 11 Cutting machine 12 H-section steel 13 Lower flange 13a One end side 13b Other end side 14 First cutting member 15 First 2 cutting member 16 first mounting portion 17 first holding plate 18 driving motor 19 upper flange 19a one end side 19b other end side 20 driving shaft portion 21 rotating cutter 22 driving roller 23 first guide shaft portion 24 second mounting portion 25 second 2 holding plate 26 driven shaft portion 27 driven roller 28 second guide shaft portion 29 groove portion 30 bolt 31 screw 32, 33 insertion hole 32a, 33a insertion tube 34, 35 connecting plate 36 lock plate 37 groove portion 38 bolt 39 screw 40, 41 insertion Hole 40a, 41a Insertion tube 42, 43 Connecting plate 44 Lock plate 4 Bolts 46 and 47 fall prevention fitting of the cutting line 48 locking portion 49 receiving portion 50 engaging portion 51 receiving portion 61 cut piece 62 groove 63 bolt 64 cut pieces

Claims (3)

It consists of two members, a first cutting member installed on one end side of the lower flange of the H-shaped steel disposed in the horizontal direction and a second cutting member installed on the other end side. A cutting machine for cutting a part into a predetermined width,
The first cutting member is
A first attachment portion detachably attached to one end of the flange;
A first holding plate connected to the first mounting portion;
A drive shaft portion that is movably inserted into the first holding plate, includes a drive motor at a rear end portion, and a front end portion is positioned beyond the upper flange;
A drive roller provided at the tip of the drive shaft and around which a rotary cutter is wound;
A first guide shaft portion that is arranged in parallel with the drive shaft portion and is movably inserted into the first holding plate to guide the movement of the drive shaft portion;
The second cutting member is
A second attachment portion detachably attached to the other end of the flange;
A second holding plate connected to the second mounting portion;
A driven shaft portion that is movably inserted into the second holding plate and has a tip portion positioned beyond the upper flange;
A driven roller that is provided at the tip of the driven shaft and is wound around the rotary cutter;
A second guide shaft portion arranged in parallel with the driven shaft portion and movably inserted in the second holding plate to guide the movement of the driven shaft portion;
The cutting machine characterized in that the driving roller and the driven roller are simultaneously moved to one flange side, and the rotary cutter cuts the middle part of the H-shaped steel to a predetermined width. Bolts to be brought into contact with the side portions of the flange are screwed to the side portions of the second mounting portion, and the position of the second mounting portion is adjusted by screwing in the bolts, and the tension of the rotary cutter is adjusted. The cutting machine according to claim 1, wherein the cutting machine is configured to be adjusted. The cutting machine according to claim 1, wherein the rotary cutter is configured to simultaneously cut two cutting lines along the short direction of the H-shaped steel.

Images