JP7466331B2 - Cutting equipment auxiliary fixture - Google Patents

Description

The present invention relates to a cutting auxiliary tool that holds a steel sheet pile from its end in the width direction when cutting stacked steel sheet piles to a specified length, and cutting equipment equipped with the same.

There is a known saw that cuts lightweight shaped steel produced on a line by rolling or the like to a specified length. For example, it is known that when cutting shaped steel, the shaped steel is clamped from both sides in the width direction to fix the shaped steel so that it does not move, thereby suppressing vibration of the shaped steel (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 7-256512

When cutting hat-shaped steel sheet piles as structural steel to a specified length, the steel sheet piles may be stacked in multiple layers to increase cutting efficiency. When multiple stacked steel sheet piles are cut with a saw, the saw teeth first hit the steel sheet piles stacked on the upper side in the stacking direction. The steel sheet piles are clamped from the sides, but when the saw teeth come into contact with the steel sheet piles, they are pressed downward and may move relative to the hat-shaped steel sheet piles in the lower layers.

In addition, depending on the equipment and the type of steel sheet pile being manufactured, the topmost stacked steel sheet pile may not be clamped. When cutting such an unclamped steel sheet pile, the steel sheet pile vibrates significantly, transmitting excessive shock to the saw teeth, which is expected to significantly shorten the life of the saw teeth.

In addition, when the steel sheet piles vibrate, the cut surfaces of the cut steel sheet piles become rough and the shape of the steel sheet piles becomes distorted, which raises concerns about a decline in product quality.

The present invention has been made in consideration of the above problems, and aims to provide a technology that can accurately cut steel sheet piles by suppressing vibrations that may occur in the steel sheet piles when they are cut.

In order to achieve the above object, according to the present invention, a cutting auxiliary jig is provided that holds the steel sheet piles from the end side in the width direction when cutting the steel sheet piles stacked vertically to a predetermined length, and includes a pair of clamping parts that extend in a direction along the stacking direction of the steel sheet piles and face each other to hold the steel sheet pile, and an engaging part that engages with the end of the uppermost steel sheet pile among the stacked steel sheet piles on the surface of the clamping parts facing the steel sheet pile, and the engaging part is characterized in that it suppresses the movement of each of the steel sheet piles in the stacking direction.

The clamping portion may have a slit hole formed along the stacking direction of the steel sheet piles, and the engaging portion may be formed as a holding member that is movable and positionable along the slit hole, and the holding member may hold down the end of the topmost steel sheet pile from above, thereby suppressing the movement of each of the steel sheet piles.

The engagement portions may be formed as grooves spaced apart from each other at a predetermined interval in the direction along the stacking direction of the steel sheet piles and formed along the width direction of the steel sheet piles in the extension direction, and the movement of the steel sheet piles may be suppressed by the end portions of the steel sheet piles fitting into the grooves.

The engaging portions may be formed as protrusions spaced apart from each other at a predetermined interval in the direction along the stacking direction of the steel sheet piles and extending in the width direction of the steel sheet piles, and the protrusions may support the ends of the steel sheet piles to suppress the movement of the steel sheet piles.

Steel sheet piles having a U-shaped section in the cross section that intersects with the extension direction may also be sandwiched in a state where the steel sheet piles are stacked one on top of the other.

Furthermore, in order to achieve the above object, the present invention is characterized by comprising a cutting device that cuts vertically stacked steel sheet piles to a predetermined length, movable wall sections provided on both sides in the width direction of the steel sheet piles and that can move toward and away from each other, and a cutting auxiliary jig of the above-mentioned aspect that can be attached and detached to the movable wall sections.

According to the present invention, it is possible to suppress vibrations that may occur in the steel sheet pile when sawing the steel sheet pile, and to cut the steel sheet pile accurately.

FIG. 2 is a perspective view showing a schematic view of a part of the cutting equipment. FIG. FIG. FIG. 13 is a diagram for explaining holding down of a steel sheet pile by a cutting auxiliary jig. 10A and 10B are diagrams for explaining a configuration of a cutting auxiliary tool according to Modification 1. 13A and 13B are diagrams for explaining holding of a steel sheet pile by a cutting auxiliary jig according to modified example 1. 13A and 13B are diagrams for explaining a configuration of a cutting auxiliary jig according to Modification 2. 13 is a diagram for explaining holding of a steel sheet pile by a cutting auxiliary jig according to modified example 2. FIG.

Below, an embodiment of the present invention will be described with reference to the drawings.

Figure 1 is a perspective view showing a schematic view of a part of the cutting equipment 100. The cutting equipment 100 according to the present invention cuts a long piece of, for example, a lightweight steel sheet pile (hereinafter, "steel sheet pile") 200 formed by roll forming to a predetermined length. The cutting equipment 100 includes a cutting device 110, a pair of movable wall portions 120, and a cutting auxiliary jig 1. In the cutting equipment 100, the steel sheet pile 200 is cut in the width direction while being stacked vertically one above the other.

For ease of explanation, the direction in which the steel sheet piles 200 extend is referred to as the "longitudinal direction L1", the direction of the steel sheet piles 200 that intersects with the longitudinal direction L1 is referred to as the "width direction W1", and the direction in which multiple steel sheet piles 200 are stacked is referred to as the "stacking direction H", "vertical direction H", "up-down direction H" or "height direction H". The longitudinal direction L1 corresponds to the "width direction W2" of the cutting auxiliary jig 1, and the stacking direction H corresponds to the "longitudinal direction L2" of the cutting auxiliary jig 1.

The cutting device 110 is provided on one side of the steel sheet pile 200 in the width direction W1. The cutting device 110 has a band saw type saw blade 111. The cutting device 110 is movable in the vertical direction H. The saw blade 111 cuts the steel sheet pile 200 across the width direction W1.

A pair of movable wall portions 120 are provided adjacent to the cutting device 110. The movable wall portions 120 are provided facing each other in the width direction W1 so as to sandwich the steel sheet pile 200. One movable wall portion 120 can freely move toward and away from the other movable wall portion 120. Two screw holes (not shown) are formed in the movable wall portion 120.

There is a demand to increase the number of steel sheet piles 200 that can be cut at one time by the cutting device 110, thereby improving work efficiency. In conventional cutting equipment, a pair of movable wall sections 120 sandwich the steel sheet pile 200 from the width direction W1. Therefore, depending on the type of steel sheet pile, the number of steel sheet piles 200 that can be cut at one time by the cutting device 110 is limited by the height of the movable wall sections 120.

The cutting equipment 100 is equipped with a cutting auxiliary jig 1, which allows the steel sheet pile 200 that protrudes upward in the height direction H from the movable wall portion 120 to be clamped from the side and above.

The steel sheet pile 200 has a cross-sectional shape intersecting the longitudinal direction L1 that is a so-called hat shape. Figure 2 is a cross-sectional view of the steel sheet pile 200. The steel sheet pile 200 includes a web 201, a pair of flanges 202, a pair of arm portions 203, and a pair of joint portions 204.

The web 201 extends in the width direction W1 of the steel sheet pile 200. The flanges 202 are provided along both ends 205 of the web 201 in the width direction W1. The flanges 202 extend upward in the height direction H. The arm portions 203 are provided at the ends of the flanges 202 opposite the web 201. In the steel sheet pile 200, the web 201 and the flanges 202 form a U-shaped portion in cross section that intersects with the extension direction L1 of the steel sheet pile 200.

The arms 203 extend approximately parallel to the web 201. The joints 204 are connected to the tips of the arms 203. One of the joints 204 is folded back toward the web 201 (left side of the figure). The other joint 204 is folded back in the opposite direction to the web 201 (right side of the figure).

The end 206 of the steel sheet pile 200 in the width direction W1 is formed by the arm portion 203 and the joint portion 204.

Figure 3 is a perspective view of the cutting auxiliary jig 1. The cutting auxiliary jig 1 holds the steel sheet pile 200 from the end 206 side in the width direction W1 when cutting the steel sheet piles 200 stacked vertically to a predetermined length. The cutting auxiliary jig 1 extends in a direction along the stacking direction H of the steel sheet piles 200 (longitudinal direction L2) and includes a pair of clamping parts 10 that face each other and hold the steel sheet pile 200, and an engaging part 20 that engages with the end 206 of the uppermost steel sheet pile 200 on the surface 11 of the clamping part 10 facing the steel sheet pile 200. The engaging part 20 suppresses the movement of each steel sheet pile 200 in the stacking direction H. The cutting auxiliary jig 1 will be described in detail below.

The cutting assist jig 1 is attached to each movable wall portion 120. The cutting assist jig 1 has a clamp portion 10, an engagement portion 20, and an attachment portion 30. When the cutting assist jig 1 is attached to the movable wall portion 120, the clamp portion 10 is on the side of the movable wall portion 120 facing the steel sheet pile 200.

The clamping portion 10 cooperates with the clamping portion 10 of the opposing cutting auxiliary jig 1 to clamp the steel sheet pile 200 in the width direction W1. The clamping portion 10 is formed of steel material. The clamping portion 10 is formed in a rectangular shape in a plan view. The clamping portion 10 contacts the joint portion 204 of the steel sheet piles 200 stacked vertically from the side.

The clamping portion 10 has two slit holes 12. The slit holes 12 are formed as elongated holes along the longitudinal direction L2. The slit holes 12 are formed at a predetermined interval from each other in the width direction W2 of the clamping portion 10.

The engaging portion 20 extends perpendicularly to the surface 11 of the clamp portion 10 toward the opposing cutting aid 1. The engaging portion 20 is formed as a holding member that is movable and positionable along the slit hole 12 (hereinafter also referred to as the "holding member 20"). The holding member 20 holds down the end 206 of the topmost steel sheet pile 200 from above among the stacked steel sheet piles 200, thereby suppressing the movement of each steel sheet pile 200. The holding member 20 can be fixed at a predetermined position in the slit hole 12.

The pressing member 20 has a pressing plate 21 and two rod-shaped guide members 22 with threads formed on the outer circumferential surface. The pressing plate 21 is made of steel. The pressing plate 21 is formed in a generally rectangular shape in a plan view. Two screw holes (not shown) are provided on the end surface of the pressing plate 21 that contacts the clamp portion 10. The two screw holes are aligned with the respective slit holes 12.

One end of each of the two guide members 22 is inserted into the screw hole of the pressing plate 21, and the other end is inserted into the slit hole 12. A wing nut 23 is attached to the other end of the guide member 22 protruding from the slit hole 12. By adjusting the tightening of the wing nut 23, the pressing member 20 can be fixed at the desired position in the slit hole 12.

The mounting portion 30 is attached integrally to the surface 13 of the clamp portion 10 on the opposite side to the steel sheet pile 200. The mounting portion 30 is made of steel. The mounting portion 30 is formed in a substantially L-shape when viewed from the side of the cutting aid 1.

The mounting portion 30 has an erected portion 31 and an attachment portion 32. The erected portion 31 is provided on the clamp portion 10 below the slit hole 12 when the cutting assist jig 1 is attached to the movable wall portion 120.

The mounting portion 32 extends perpendicular to the standing portion 31. The mounting portion 32 extends downward from the end of the standing portion 31 opposite the clamp portion 10. The mounting portion 32 is approximately parallel to the clamp portion 10. The distance between the mounting portion 32 and the clamp portion 10 is approximately equivalent to the thickness of the movable wall portion 120.

Two holes 33 are formed in the mounting portion 32. Each hole 33 is aligned with a screw hole in the movable wall portion 120. A bolt B is inserted into each of the two holes 33 in the mounting portion 32 and the screw hole in the movable wall portion 120 (see FIG. 4). This fixes the cutting assist jig 1 to the movable wall portion 120. In this state, the portion of the clamp portion 10 above the mounting portion 30 is positioned above the movable wall portion 120.

The cutting auxiliary tool 1 described above can clamp and cut a number of steel sheet piles 200 that cannot be clamped by the movable wall section 120 of existing equipment, depending on the type of steel sheet pile. With the cutting auxiliary tool 1 attached to the movable wall section 120, the movable wall section 120 is moved closer to each other until the clamp section 10 and the steel sheet pile 200 come into contact.

Next, the pressing plate 21 is slid in the slit hole 12 to press down the end 206 of the topmost steel sheet pile 200 from above. FIG. 4 is a diagram for explaining the pressing down of the steel sheet pile 200 by the cutting auxiliary jig 1. As a result, the steel sheet pile 200 is pressed from two sides by the clamp part 10 and also pressed down from above, so that the vibration of the steel sheet pile 200 when the saw teeth 111 come into contact with the steel sheet pile 200 can be suppressed. By suppressing the vibration of the steel sheet pile 200, the cutting accuracy of the steel sheet pile 200 is improved, and the quality and work efficiency of the steel sheet pile 200 as a product are improved.

The above describes the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments and includes all aspects included in the concept of the present invention and the scope of the claims.

Figure 5 is a diagram for explaining the configuration of the cutting assist jig 1A according to the first modification. The cutting assist jig 1A according to the first modification will be explained below. Note that in the following explanation, only the parts that differ from the cutting assist jig 1 according to the above embodiment will be explained, and the same parts will be designated by the same reference numerals and their explanation will be omitted.

The cutting aid jig 1A includes a clamp portion 10, an engagement portion 20A, and an attachment portion 30. The engagement portions 20A are formed as grooves that are spaced apart from each other at a predetermined interval in the longitudinal direction L2 of the clamp portion 10 and that are formed along the width direction W2 (hereinafter, also referred to as "groove portions 20A").

The groove portion 20A is formed on the surface 11 of the clamp portion 10 that faces the steel sheet pile 200. The groove portion 20A is formed concavely toward the mounting portion 30. The cross-sectional shape of the groove portion 20A when the clamp portion 10 is cut along the longitudinal direction L2 is an arc shape.

Figure 6 is a diagram for explaining the holding of the steel sheet pile 200 by the cutting auxiliary jig 1A. The grooves 20A are provided at multiple locations in the longitudinal direction L2 of the clamping portion 10, so that the end portions 206 of all the stacked steel sheet piles 200 are inserted into one of the grooves 20A. This makes it possible to suppress the movement of the steel sheet pile 200 in the stacking direction H. The grooves 20A increase the surface area of the joint portion 204 that contacts the grooves 20A, so that the movement of the steel sheet pile 200 in the stacking direction H can be further suppressed.

Figure 7 is a diagram for explaining the configuration of the cutting assist jig 1B according to the modified example 2. The cutting assist jig 1B according to the modified example 2 will be explained below. Note that in the following explanation, only the parts that differ from the cutting assist jig 1 according to the above embodiment will be explained, and the same parts will be designated by the same reference numerals and their explanation will be omitted.

The cutting aid jig 1B includes a clamp portion 10, an engagement portion 20B, and an attachment portion 30. The engagement portions 20B are formed as protrusions that are spaced apart from each other at a predetermined interval in the longitudinal direction L2 of the clamp portion 10 and that are formed along the width direction W2 (hereinafter, also referred to as "protrusions 20B").

The protrusion 20B is formed on the surface 11 of the clamping portion 10 that faces the steel sheet pile 200. The protrusion 20B is formed so as to protrude toward the opposite side to the mounting portion 30. The cross-sectional shape of the protrusion 20B when the clamping portion 10 is cut along the longitudinal direction L2 is rounded.

Figure 8 is a diagram for explaining the holding of the steel sheet pile 200 by the cutting auxiliary jig 1B. Since the protrusions 20B are provided at multiple locations in the longitudinal direction L2 of the clamping portion 10, the protrusions 20B support the end portion 206 of the steel sheet pile 200 from above on one side (the left side of the figure) and from below on the other side (the right side of the figure), thereby preventing the steel sheet pile 200 from moving in the overlapping direction H. The protrusions 20B increase the surface area of the joint portion 204 that contacts the protrusions 20B, further preventing the movement of the steel sheet pile 200 in the overlapping direction H.

The configurations of the above embodiments may be combined in an appropriate and selective manner to achieve at least some of the above-mentioned problems and advantages.

1, 1A, 1B Cutting auxiliary jig 10 Clamp portion 12 Slit hole 20 Pressing member (engagement portion)
20A Groove (engagement portion)
20B Protrusion (engagement portion)
100 Cutting equipment 110 Cutting device 111 Sawtooth 120 Movable wall portion 200 Steel sheet pile 206 End portion

Claims (5)

A cutting equipment auxiliary jig that holds a steel sheet pile from an end side in a width direction when cutting the steel sheet piles stacked vertically to a predetermined length,
A pair of clamp portions extending in a direction along the stacking direction of the steel sheet piles and facing each other to clamp the steel sheet pile;
an engaging portion that engages with the end portion of the uppermost steel sheet pile among the stacked steel sheet piles, on a surface of the clamp portion facing the steel sheet piles;
and an attachment portion that is integrally attached to a surface of the clamp portion on the opposite side to the steel sheet pile and is fixed to a movable wall portion of a cutting facility that is provided opposite to each other so as to sandwich the steel sheet pile;
a portion of the clamp portion above the attachment portion fixed to the movable wall portion is located above the movable wall portion;
A portion of the clamp portion above the attachment portion has a slit hole formed along a direction along the stacking direction of the steel sheet pile,
The cutting equipment auxiliary jig is characterized in that the engaging portion is freely movable and positionable along the slit hole, and the engaging portion presses down on the end portion of the topmost steel sheet pile from above, thereby suppressing movement of each of the stacked steel sheet piles in the stacking direction. A cutting equipment auxiliary jig that holds a steel sheet pile from an end side in a width direction when cutting the steel sheet piles stacked vertically to a predetermined length,
A pair of clamp portions extending in a direction along the stacking direction of the steel sheet piles and facing each other to clamp the steel sheet pile;
an engaging portion that engages with the end portion of the stacked steel sheet pile on a surface of the clamp portion facing the steel sheet pile;
and an attachment portion that is integrally attached to a surface of the clamp portion on the opposite side to the steel sheet pile and is fixed to a movable wall portion of a cutting facility that is provided opposite to each other so as to sandwich the steel sheet pile;
a portion of the clamp portion above the attachment portion fixed to the movable wall portion is located above the movable wall portion;
The engagement portions are formed as grooves that are spaced apart from each other at predetermined intervals in a direction along the stacking direction of the steel sheet piles and that are formed along a width direction along an extension direction of the steel sheet piles,
The cutting equipment auxiliary jig is characterized in that the end portion of the steel sheet pile is inserted into the groove portion, thereby suppressing movement of each of the stacked steel sheet piles in a stacking direction. A cutting equipment auxiliary jig that holds a steel sheet pile from an end side in a width direction when cutting the steel sheet piles stacked vertically to a predetermined length,
A pair of clamp portions extending in a direction along the stacking direction of the steel sheet piles and facing each other to clamp the steel sheet pile;
an engaging portion that engages with the end portion of the stacked steel sheet pile on a surface of the clamp portion facing the steel sheet pile;
and an attachment portion that is integrally attached to a surface of the clamp portion on the opposite side to the steel sheet pile and is fixed to a movable wall portion of a cutting facility that is provided opposite to each other so as to sandwich the steel sheet pile;
a portion of the clamp portion above the attachment portion fixed to the movable wall portion is located above the movable wall portion;
The engaging portions are formed as protrusions that are spaced apart from each other at predetermined intervals in a direction along the stacking direction of the steel sheet piles and that are formed along a width direction along an extension direction of the steel sheet piles,
The cutting equipment auxiliary jig is characterized in that the protrusion supports the end of the steel sheet pile, thereby suppressing movement of each of the stacked steel sheet piles in a stacking direction. The cutting equipment auxiliary jig according to any one of claims 1 to 3, characterized in that the jig clamps steel sheet piles having a U-shaped portion in a cross-sectional shape intersecting with an extension direction in a state where the steel sheet piles are stacked one on top of the other. A cutting device that cuts the vertically stacked steel sheet piles to a predetermined length;
The movable wall portion is provided on both sides in a width direction of the steel sheet pile and can approach and move away from each other;
The cutting equipment auxiliary jig according to any one of claims 1 to 4, which is detachably attached to the movable wall portion;
A cutting apparatus comprising: