H-beam marking device

Abstract

The present invention aims to provide a device that is simple in structure, inexpensive, and allows for easy manual marking of H-shaped steel beams. [Solution] The H-beam marking device 50 of the present invention has a guide section 51 that is guided and moves in the front-rear direction along the longitudinal direction of the H-beam 1, and a marking unit 52 provided on the guide section 51. The marking unit 52 is provided with a mounting section 55 for detachably attaching a plate 54 having marking holes 53 for drawing marking lines on the upper surface of the H-beam 1, and a reading section 67 for reading the position of the marking holes 53.

Description

Technical Field

[0001] The present invention relates to an H-shaped steel scribing device for scribing H-shaped steel.

Background Art

[0002] For building materials such as H-shaped steel, a marking operation is performed to mark the position to be joined to other building materials. Conventionally, in a factory, scribing using an ink pot or scribing using chalk or the like has been performed.

[0003] Marking devices have been proposed that can perform this marking operation efficiently and improve workability (see Patent Documents 1 to 3).

[0004] The one described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2005-074572) is a marking device capable of forming a reference mark on a member, comprising a base; a marking part forming device holding device capable of holding a marking part forming device for forming a marking part distinguishable from other parts on the surface of the member; a first moving means capable of moving the base along the longitudinal direction of the member by following a part extending in the longitudinal direction of the member; a second moving means capable of moving the marking part forming device holding device in a direction different from the moving direction by the first moving means; a marking data input means capable of freely inputting marking data for forming a mark on the member; and a control means for controlling the first moving means and the second moving means to form a mark on the member according to the input marking data.

[0005] Patent Document 2 (Japanese Patent Publication No. 2017-094454) describes a self-propelled device for marking work, comprising a self-propelled device that moves along the longitudinal direction of an object to be marked, a marking device provided on the self-propelled device, and a control device that controls the operation of the marking device, wherein the marking device is configured to print at an arbitrary position on the object to be marked in an intersecting direction that intersects the self-propelled direction of the self-propelled device, and the control device is configured to control the printing of marks by the marking device according to the self-propelled position of the self-propelled device.

[0006] Patent Document 3 (Japanese Patent Publication No. 2021-130173) describes a projection device for projecting a drawing to actual size onto the top surface of a member, comprising: a projector provided opposite the top surface; a distance meter for measuring the position of the projector; a frame for holding the projector and the distance meter; and a moving means for moving the frame substantially parallel to the top surface, wherein the projector is a projection device that changes the drawing projected onto the top surface based on the change in position detected by the distance meter. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2005-074572 [Patent Document 2] Japanese Patent Publication No. 2017-094454 [Patent Document 3] Japanese Patent Publication No. 2021-130173 [Overview of the project] [Problems that the invention aims to solve]

[0008] The devices described in Patent Documents 1 to 3 are complex and expensive, and require specialized technicians to operate, such as by inputting CAD data, making them difficult to adopt in the workplaces of small and medium-sized enterprises.

[0009] Therefore, the present invention aims to provide a device that is simple in structure, inexpensive, and allows for easy manual marking of H-shaped steel beams. [Means for solving the problem]

[0010] To achieve the above objective, the present invention employs the following means. Specifically, the H-beam marking device of the present invention comprises a guide section that moves along the longitudinal direction of the H-beam and is guided in the front-rear direction, and a marking unit provided on the guide section. The marking unit is provided with a mounting section for detachably attaching a plate having marking holes for drawing marking lines on the upper surface of the H-beam, and a reading section for reading the position of the marking holes.

[0011] The reading unit is preferably provided in a digital measuring means such as a laser distance meter or a wire-type linear encoder that measures the movement position of the marking unit.

[0012] The reading unit can be one that reads the scale of an analog measuring device such as a ruler, scale, or tape measure.

[0013] The upper surface of the H-shaped steel is the surface of the web, the guide portion has a pair of front-to-back and left-to-right guide rollers that are guided on both the left and right sides of the H-shaped steel and move in the front-to-back direction, the guide rollers are provided at both ends of the shaft and move along the upper end surfaces of the flanges on both the left and right sides of the H-shaped steel, the marking unit has left and right side walls provided on both the left and right sides of the mounting portion, and preferably the left and right side walls have an upwardly open U-shaped cut groove into which the shaft engages, and wheels that run on the upper surface of the web.

[0014] The upper surface of the H-shaped steel is the surface of the web, the guide portion has a pair of front and rear guide rollers that are guided by one of the left and right sides of the H-shaped steel and move in the front and rear direction, the guide rollers are provided at one end of the shaft and move along the upper end surface of one of the left and right flanges of the H-shaped steel, the marking unit has left and right side walls provided on both the left and right sides of the mounting portion, and the left and right side walls may have a fixing portion for fixing the shaft and a wheel that runs on the upper surface of the web.

[0015] The upper surface of the H-shaped steel is the surface of the flange, the guide portion has a pair of front and rear and left and right guide rollers that are guided on both the left and right sides of the H-shaped steel and move in the front and rear direction, the guide rollers are provided at both ends of the shaft and move along both the left and right ends of the flange, and the marking unit has front and rear side walls provided on both the front and rear sides of the mounting portion, and the shaft may be engaged with the front and rear side walls.

[0016] The upper surface of the H-shaped steel is the web surface, the guide portion has a pair of front and rear and left and right guide rollers that are guided on both the left and right sides of the H-shaped steel and move in the front and rear direction, the guide rollers are provided at both ends of the shaft and move along the upper end surfaces of the flanges on both the left and right sides of the H-shaped steel, and the marking unit has front and rear side walls provided on both the front and rear sides of the mounting portion, the shaft may be engaged with the front and rear side walls.

[0017] The H-shaped steel is attached to an H-shaped steel reversing device for marking work. The H-shaped steel reversing device has multiple bases arranged along the longitudinal direction of the H-shaped steel, and a reversing table having a mounting surface on which the flange of the H-shaped steel is placed is pivotally supported on the bases by a shaft provided on the reversing table so as to be rotatable. The reversing table is provided with a clamping device for fixing the flange placed on the mounting surface to the mounting surface, and a drive device is provided that rotates the reversing table clockwise and counterclockwise around the shaft to change the position of the mounting surface from a horizontal state to an inclined state. The upper surface of the H-shaped steel is the surface of the web, a reference rail is provided on the reversing table along the upper and lower end surfaces of the flange, the guide section has a pair of front and rear guide rollers that move guided by the reference rail, a frame that rotatably supports the guide rollers from both the left and right sides, and a pair of front and rear scribing unit connecting bars that protrude from the frame, a vertical wall is provided at the end of the mounting section, the tip of the scribing unit connecting bar engages with the vertical wall, and preferably the mounting section is provided with four wheels on the front, back and left and right that travel along the longitudinal direction on the upper surface of the web.

[0018] The H-beam is mounted on an H-beam reversing device for marking work. The H-beam reversing device has multiple bases arranged along the longitudinal direction of the H-beam, and a reversing table having a mounting surface on which the flange of the H-beam is placed is pivotally supported on the bases by a shaft provided on the reversing table so as to be rotatable. The reversing table is provided with a clamping device for fixing the flange placed on the mounting surface to the mounting surface, and the reversing table can be rotated clockwise and counterclockwise around the shaft. Furthermore, a drive device is provided to change the position of the aforementioned mounting surface from a horizontal state to an inclined state, the upper surface of the H-shaped steel is the surface of the web, the analog measuring means is provided on the reversing table along the upper and lower end surfaces of the flange, the marking unit is provided with the guide part on one of the side walls provided on both the left and right sides of the mounting part, the reading part is provided on the side wall on the side closer to the aforementioned mounting surface, and wheels that travel on the upper surface of the web are provided on the left and right side walls.

[0019] The H-shaped steel scribing device of the present invention is provided with a scribing unit that guides the upper surface of the web and the inner surface of the flange of the shaped steel and moves on the H-shaped steel, and the scribing unit is provided with a reading unit that reads the position of the scribing unit, and scribing work can be performed on the upper surface of the web along the end surface of the scribing unit.

Effect of the Invention

[0020] According to the present invention, compared with the conventional structure that involves complex and expensive data processing and requires a professional for operation, it has a simple structure, is inexpensive, and can perform scribing work with a simple operation.

Brief Explanation of the Drawings

[0021] [Figure 1] FIG. 1 is a perspective view showing a first embodiment of the H-shaped steel scribing device of the present invention. [Figure 2] FIG. 2 is an enlarged view of the main part of FIG. 1. [Figure 3] FIG. 3 is a side view of FIG. 2. [Figure 4] FIG. 4 is a plan view of FIG. 3. [Figure 5] FIG. 5 is a plan view of the plate. [Figure 6] FIG. 6 is a perspective view showing the main part of a second embodiment of the H-shaped steel scribing device of the present invention. [Figure 7] FIG. 7 is a side view of FIG. 6. [Figure 8] FIG. 8 is a plan view of FIG. 7. [Figure 9] FIG. 9 is a perspective view showing the main part of a third embodiment of the H-shaped steel scribing device of the present invention. [Figure 10] FIG. 10 is a side view of FIG. 9. [Figure 11] FIG. 11 is a plan view of FIG. 10. [Figure 12] FIG. 12 is a perspective view showing a fourth embodiment of the present invention. [Figure 13] FIG. 13 is an enlarged view of the main part of FIG. 12. [Figure 14] Figure 14 is a side view of Figure 13. [Figure 15] Figure 15 is a plan view of Figure 14. [Figure 16] Figure 16 is a perspective view showing a fifth embodiment of the present invention. [Figure 17] Figure 17 is an enlarged view of the main part of Figure 16. [Figure 18] Figure 18 is a side view of Figure 17. [Figure 19] Figure 19 is a perspective view showing a sixth embodiment of the present invention. [Figure 20] Figure 20 is an enlarged view of the main part of Figure 19. [Figure 21] Figure 21 is a side view of Figure 20. [Figure 22] Figure 22 is a perspective view showing a seventh embodiment of the present invention. [Figure 23] Figure 23 is an enlarged view of the main part of Figure 22. [Figure 24] Figure 24 is a side view of Figure 23. [Figure 25] Figure 25 is a plan view of Figure 24. [Figure 26] Figure 26 is an explanatory diagram of the welding process in a reversing machine. [Figure 27] Figure 27 is a perspective view of the inverting machine, with Figure (a) showing the state when the H-beam is being loaded, Figure (b) showing the H-beam in a -90° inverted state, and Figure (c) showing the H-beam in a +90° inverted state. [Figure 28] Figure 28 is a side view showing the clamping device of the reversing machine. [Figure 29] Figure 29 is a front view of Figure 28. [Figure 30] Figure 30 is a cross-sectional view of the DD line in Figure 29. [Figure 31] Figure 31 is a perspective view showing the swingarm. [Figure 32] Figure 32 is a diagram illustrating the operation of the swingarm. [Figure 33] Figure 33 is an explanatory diagram showing a swingarm with a spacer attached. [Figure 34]Figure 34 is an explanatory diagram showing the state in which the web surface of an H-shaped steel beam is inclined. [Figure 35] Figure 35 is a perspective view showing an eighth embodiment of the present invention. [Figure 36] Figure 36 is an enlarged view of the main part of Figure 35. [Figure 37] Figure 37 is a view taken along arrow A in Figure 35. [Modes for carrying out the invention]

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0023] Figures 1-5 show an H-beam marking device according to the first embodiment of the present invention. The H-beam 1 is used as a building material, and flanges 1b are formed in an H shape at both the left and right ends of the web 1a, and it has a predetermined length in the longitudinal direction. Inside the factory building, stiffeners and other members are welded to the H-beam 1 to make it a building material, and it is shipped to the construction site. Prior to this welding work, marking work is performed manually on the upper surface of the H-beam 1 at the positions to be welded. Note that there are various flange 1b widths and web 1a thicknesses, and the thickness and length of the marking lines differ according to these dimensions.

[0024] In the following explanation, "front-to-back direction" refers to the longitudinal direction of the H-beam 1, and "left-to-right direction" refers to the direction perpendicular to the longitudinal direction of the H-beam 1 horizontally, regardless of the orientation of the H-beam 1 (whether the web 1a is horizontal or vertical).

[0025] In this first embodiment, the upper surface of the H-shaped steel beam 1 to be marked is the surface of the web 1a. That is, as shown in Figures 1 to 3, the H-shaped steel beam 1 is placed with the flanges 1b on both the left and right sides in a vertical position and the web 1a in a horizontal position. In this state, the upper surface of the web 1a is marked by the H-shaped steel beam marking device 50.

[0026] The H-beam marking device 50 includes a guide section 51 that moves along the longitudinal direction of the H-beam 1 in a front-rear direction, and a marking unit 52 provided on the guide section 51. The marking unit 52 has a mounting section 55 to which a plate 54 having marking holes 53 for drawing marking lines on the upper surface of the H-beam 1 is detachably attached. The marking unit 52 is provided with a reading section 67 for reading the position of the marking holes 53. This reading section 67 is provided on a digital measuring means 56.

[0027] The guide section 51 has a pair of front-to-back and left-to-right guide rollers 57 that are guided by the left and right sides of the H-shaped steel 1 and move in the front-to-back direction. The pair of left and right guide rollers 57 are held at both ends of the shaft 58.

[0028] In this embodiment, the guide roller 57 has a rolling portion 57a ​​that rolls along the upper end surfaces of the left and right flanges 1b, and a flange portion 57b provided at the end of the rolling portion 57a ​​that is guided by the side surface of the flange 1b, and is held at both ends of the shaft 58. A pair of shafts 58 are provided, one at the front and one at the back. The marking unit 52 is held on this pair of front and rear shafts 58.

[0029] The marking unit 52 has side wall portions 59 provided at both ends of the mounting portion 55. In this embodiment, the side wall portions 59 are provided at both the left and right ends of the mounting portion 55, and the mounting portion 55 and the side wall portions 59 are formed in an upwardly open U shape. A pair of upwardly open U-shaped cut grooves 60 are provided in the front and rear of these side wall portions 59 through which the shaft 58 is inserted. Wheels 61 that run on the upper surface of the web 1a are provided on these side wall portions 59.

[0030] As shown in Figure 5, marking holes 53 are formed in the plate 54. These marking holes 53 are for drawing marking lines on the upper surface of the H-shaped steel beam 1. Various width (a) and length (b) dimensions of the marking holes 53 are available, and the plate 54 can be easily replaced depending on the thickness of the plate to be welded. For example, dimension a can be selected from 12, 14, 16, 19, 22 mm, etc., and dimension b can be selected from 300, 400, 500 mm, etc.

[0031] In this embodiment, the digital measuring means 56 is exemplified by a laser distance meter 62. The laser distance meter 62 can continuously measure the distance from a reference point, or, after setting the positions of one or more points, it can measure and digitally display the distance when it reaches those positions, and can also provide indicators such as lights and buzzers, and is provided on the side wall portion 59 of the marking unit 52. A reflector 63 of the laser distance meter 62 is detachably attached to the longitudinal end of the H-shaped steel 1 by a magnet 64 or the like. This reflector 63 becomes the reference point. The laser distance meter 62 is provided with a display unit 67b that digitally displays the distance from the end of the H-shaped steel 1. This display unit 67b constitutes the reading unit 67 of the present invention. The display position is set to show the center position of the marking hole 53.

[0032] According to the H-beam marking device 50 of the first embodiment, the operator manually moves the marking unit 52 in the longitudinal direction of the H-beam 1. At the reading unit 67, the movement of the marking unit 52 is stopped at a predetermined position indicated by the display unit 67b of the laser distance meter 62, and at that position, a marking line is drawn on the upper surface of the web 1a from the marking hole 53.

[0033] Although the flange width 1b and web thickness 1a of the H-beam 1 vary, the marking unit 52 moves on wheels 61 that roll on the upper surface of the web 1a, so the distance between the plate 54 and the upper surface of the web 1a is constant, making marking easy. At this time, since the shaft 58 of the guide part 51 is engaged with the U-shaped cut groove 60, even if the distance between the upper end of the flange 1b and the upper surface of the web 1a changes, the shaft 58 moves up and down in the U-shaped cut groove 60, so a common marking unit 52 can be used. By changing the plate 54, marking lines corresponding to the size of the H-beam 1 can be drawn.

[0034] In addition, the present invention is not limited to a U-shaped cut groove 60 with an open upper end, but may also be an elongated hole that is closed at the upper end and is long in the vertical direction.

[0035] Figures 6 to 8 show an H-beam marking device 50 according to a second embodiment of the present invention. In the first embodiment, the guide roller 57 rolled along the upper end surfaces of the left and right flanges 1b, but in this embodiment, it is configured to move along the upper end surface of one of the flanges 1b. Flanges 56b are provided on both sides of the rolling portion 57a ​​of the guide roller 57.

[0036] The guide roller 57 is provided at one end of the shaft 58 and moves along the upper end surface of one of the flanges 1b on either the left or right side of the H-shaped steel 1. The side wall portion 59 is provided on both the left and right sides of the mounting portion 55 and has a fixing portion 65 for fixing the shaft 58 and a wheel 61 that runs on the upper surface of the web 1a. The other configurations are substantially the same as those of the first embodiment.

[0037] Figures 9 to 11 show an H-beam marking device 50 according to a third embodiment of the present invention. In the second embodiment, a laser distance meter 62 was used as the digital measuring means 56, but in this embodiment, a measuring tape 66a is used as the analog measuring means 66, which is different from the second embodiment.

[0038] A measuring tape 66a, serving as an analog measuring means 66, is attached to the web 1a surface of the H-shaped steel beam 1 along its longitudinal direction. A reading unit 67 for reading the scale of the measuring tape 66a is provided on the mounting portion 55 of the marking unit 52. The reading unit 67 has a window 67a that allows the scale of the measuring tape 66a to be visually observed.

[0039] The reading unit 67 reads the scale of the measuring tape 66a from the window 67a and positions the marking hole 53 of the plate 54 at the location where the marking line should be drawn. The other configurations are substantially the same as those of the second embodiment.

[0040] Figures 12 to 15 show a fourth embodiment of the present invention. In this fourth embodiment, the upper surface of the H-shaped steel 1 to be marked is the surface of the flange 1b.

[0041] In this fourth embodiment, the H-shaped steel beam 1 is positioned with the web 1a in a vertical position and the flange 1b in a horizontal position. In this position, markings are made on the upper surface of the flange 1b by the H-shaped steel beam marking device 50.

[0042] In this embodiment, the guide rollers 57 of the guide section 51 are provided in pairs, front and rear, and one pair each is provided on the left and right ends of the shaft 58, and moves along the left and right ends of the flange 1b. The guide rollers 57 have a rolling portion 57a ​​that rolls on the upper surface of the flange 1b and a flange portion 57b that contacts the end face of the flange 1b.

[0043] The side walls 59 of the marking unit 52 are provided on both the front and rear sides of the mounting portion 55, and the shaft 58 is engaged with these front and rear side walls 59.

[0044] A plate 54 is provided on the mounting portion 55, and a laser distance meter 62 of the digital measuring means 56 is provided near this plate 54. A reflector 63 of the laser distance meter 62 is detachably attached to the longitudinal end of the H-shaped steel 1 by a magnet 64 or the like. The reading unit 67 of this digital measuring means 56 is provided, as in the above embodiment.

[0045] Figures 16-18 show a fifth embodiment of the present invention. In this embodiment, the H-shaped steel beam 1 is mounted on an H-shaped steel beam reversing device, and markings are made on the upper surface of the web 1a of the H-shaped steel beam 1.

[0046] The detailed configuration of the H-beam inversion device will be described later in Figure 26 and subsequent figures, but its general outline is as follows. The H-beam inversion device consists of multiple bases 2 arranged along the longitudinal direction of the H-beam 1. An inversion table 3, which has a mounting surface 6 on which the flange 1b of the H-beam 1 is placed, is pivotally supported on the inversion table 3 by a shaft 4 provided on the inversion table 3 so as to be rotatable. The inversion table 3 is provided with a clamping device 7 for fixing the flange 1b placed on the mounting surface 6 to the mounting surface 6. A drive device 8 is provided that rotates the inversion table 3 clockwise and counterclockwise around the shaft 4 to change the position of the mounting surface 6 from a horizontal state to an inclined state.

[0047] In the fourth embodiment, the guide portion 51 moved along the upper surface of the flange 1b in a horizontal position. However, the H-shaped steel marking device 50 of this fifth embodiment differs in that it moves along the upper surfaces of the left and right flanges 1b in a vertical position. The other configurations are substantially the same as those of the fourth embodiment.

[0048] In other words, in this embodiment, the guide rollers 57 of the guide section 51 are provided in pairs on the left and right at both ends of a pair of front and rear shafts 58. The guide rollers 57 have a rolling portion 57a ​​that rolls on the upper surface of the flange 1b in a vertical position, and a flange portion 57b that contacts the outer surface of the flange 1b.

[0049] The side walls 59 of the marking unit 52 are provided on both the front and rear sides of the mounting portion 55, and the shaft 58 is engaged with these front and rear side walls 59.

[0050] A plate 54 is provided on the mounting portion 55, and a laser distance meter 62 of the digital measuring means 56 is provided near this plate 54. A reflector (not shown) of the laser distance meter 62 is detachably attached to the longitudinal end of the H-shaped steel 1. The digital measuring means 56 is provided with a reading unit 67, as in the above embodiment.

[0051] Figures 19 to 21 show a sixth embodiment of the present invention. In this embodiment as well, the H-shaped steel beam 1 is mounted on the H-shaped steel beam reversing device, and markings are made on the upper surface of the web 1a of the H-shaped steel beam 1.

[0052] In this embodiment, a reference rail 68 is provided on the reversing table 3, positioned along the upper and lower end faces of the flange 1b. The H-beam marking device 50 includes a guide section 51 that moves along the longitudinal direction of the H-beam 1, guided by the reference rail 68, a marking unit 52 provided on the guide section 51, and a digital measuring means 56 for measuring the position of the marking unit 52. The marking unit is equipped with a replaceable plate 54 having marking holes 53 for drawing marking lines on the upper surface of the H-beam.

[0053] The guide section 51 includes a pair of front and rear guide rollers 57 that run on a reference rail 68, a frame 69 that clamps the guide rollers 57 from both the left and right sides to support them so that they can rotate freely, and a pair of front and rear scribing unit connecting bars 70 that protrude from the frame 69 toward the H-shaped steel 1. A magnet 71 is provided at the tip of the scribing unit connecting bar 70 to detachably fix the scribing unit 52.

[0054] The marking unit 52 has a mounting section 55 to which the plate 54 is attached. The mounting section 55 is provided with four wheels 61 that travel along the longitudinal direction on the upper surface of the web 1a, one on each side. A vertical wall 72 is provided at the end of the mounting section 55, and a pair of vertically oriented elongated holes 73 are provided in the vertical wall 72. The tip of the marking unit connecting bar 70 engages with these elongated holes 73 so as to be movable in the vertical direction. A magnet 71 is attracted to the vertical wall 72 to fix the marking unit 52 in place.

[0055] A laser distance meter 62 of the digital measuring means 56 is mounted on the vertical wall 72. The reflector 63 of the laser distance meter 62 is detachably attached to the end of the H-shaped steel beam 1 by a magnet 64. The digital measuring means 56 is provided with a reading unit 67, as in the above embodiment.

[0056] Figures 22 to 25 show a seventh embodiment of the present invention. The reference rail 68 of the sixth embodiment is replaced with the scale 74 of the analog measuring means 66. That is, a scale 74 with markings in 1 mm units is provided on the reversing table 3 along the longitudinal direction. In this embodiment, the marking work is performed in the inclined state shown in Figure 34 (when the reversing table 3 has rotated to approximately plus or minus 130 degrees) using the H-beam reversing work device.

[0057] The H-beam marking device 50 has a reading unit 67 and a marking unit 52 provided on the reading unit 67. The reading unit 67 has a window 67a for reading the scale markings of the scale 74, a guide projection 75 that slides along the upper surface of the scale 74, and an L-shaped connecting part 76 that protrudes from the guide projection 75 toward the H-beam 1 toward the web 1a, with the marking unit 52 connected to its lower end.

[0058] The marking unit 52 has a mounting portion 55 to which the plate 54 is detachably attached. The mounting portion 55 is provided with a wheel 61 that rolls on the upper surface of the web 1a and a guide roller 57 that rolls on the inner surface of the flange 1b.

[0059] During the marking operation, the upper surface of the web 1a is inclined, so the guide roller 57 rolls along the inner surface of the flange 1b, guiding the marking unit 52 in the longitudinal direction. Therefore, in this embodiment, the wheel 61 and the guide roller 57 constitute a guide section 51 that moves along the longitudinal direction of the H-shaped steel 1.

[0060] In this embodiment, the marking work was performed with the web 1a in an inclined state, but the marking work can also be performed in a horizontal state. When the web 1a is in a horizontal state, the guide roller 57 can also roll along the inner surface of the flange 1b on the reversing table 3 side to guide movement in the forward and backward directions. Furthermore, the guide section 51 is not limited to being composed of a rotating body consisting of a wheel 61 and a guide roller 57, but may also be composed of a sliding body.

[0061] Figures 26-34 provide a detailed explanation of the H-beam reversing device.

[0062] In Figures 26 and 27, the H-beam reversing device has multiple bases 2 arranged along the longitudinal direction of the H-beam 1. Specifically, three bases are provided, but the number is not limited to this. The H-beam 1 has a web 1a and flanges 1b provided at both ends, with a web length (height) of 1000 to 400 mm, a flange length (width) of 400 to 200 mm, and is a long material with a length of up to 15 m for the longest pieces.

[0063] A reversing platform 3 is pivotally supported on a base 2 so as to be rotatable. Shaft portions 4, pivotally supported on the base 2, protrude from both sides of the reversing platform 3. The base 2 has a pair of frames 5 that pivotally support the shaft portions 4 on both sides. The axis of the shaft portion 4 is aligned along the length of the H-shaped steel 1.

[0064] The reversing table 3 has a mounting surface 6 on which the flange 1b of the H-shaped steel 1 is placed. The reversing table 3 is provided with a clamping device 7 for fixing the flange 1b, which is placed on the mounting surface 6, to the mounting surface 6.

[0065] The H-beam inversion device is equipped with a drive device 8 that rotates the inversion platform 3 to change the position of the mounting surface 6 from a horizontal state to an inclined state. In this embodiment, the inclined state is a vertical state tilted at 90 degrees, but in the present invention, it means inclining within the range until the tip of the H-beam 1 contacts the floor surface.

[0066] The base 2 is positioned at a height that allows worker M to perform welding work from the floor level onto the H-shaped steel beam 1, which is fixed to the vertical mounting surface 6 (see Figures 26(c) and (d)).

[0067] The drive unit 8 has a drive shaft 10 that is rotated by a drive source 9. A motor is exemplified as the drive source 9, but it is not limited to this. A reduction gear 11 is directly connected to the motor 9, and the output shaft 12 of the reduction gear 11 and the end of the drive shaft 10 are interlocked and connected by a transmission means 13. The transmission means 13 consists of a chain and a sprocket, but it may also consist of a timing belt and timing pulley or a gear connection. The drive unit 8 has a control panel 38, and the motor 9 is controlled by operating this control panel 38.

[0068] The drive shaft 10 is provided in a penetrating manner through multiple bases 2. The drive shaft 10 is pivotally supported on the frame 5 of the base 2. One end of the shaft portion 4 of the reversing table 3 protrudes outward from the frame 5. This protruding portion and the drive shaft 10 are interlocked and connected by a transmission means 14. This transmission means 14 consists of a chain and a sprocket, but it may also be a timing belt and timing pulley or a gear connection. The axes of the drive shaft 10 and the shaft portion 4 are parallel.

[0069] When the mounting surface 6 of the inversion platform 3 is in an inclined state (vertical state), a support device 15 is provided to support the lower part of the H-shaped steel beam 1 fixed to the mounting surface 6 and maintain its posture.

[0070] As shown in Figures 28 to 30, the clamping device 7 has a hydraulic cylinder block 17 that incorporates a piston pin 16 that presses against the upper surface of the flange 1b of the H-shaped steel beam 1 placed on the mounting surface 6. The hydraulic cylinder block 17 is mounted on the reversing table 3 so as to be able to change its position according to the size of the flange 1b.

[0071] The reversing table 3 is provided with a T-groove 18, and a hydraulic cylinder block 17 is slidably fitted into this T-groove 18. A pair of hydraulic cylinder blocks 17 are provided on both sides of the flange 1b of the H-shaped steel 1. In addition, a pair of hydraulic cylinder blocks 17 are provided along the longitudinal direction of the H-shaped steel 1, and a total of four are provided on one reversing table 3.

[0072] In Figure 30, a hydraulic cylinder 19 is provided in the hydraulic cylinder block 17. A piston pin 16 is provided in this hydraulic cylinder 19 so as to be able to extend and retract vertically, and which presses against the upper surface of the flange 1b. A hydraulic unit 20 is connected to the hydraulic cylinder 19 via hydraulic piping 21.

[0073] Fixing means (not shown) are provided for positioning and fixing the hydraulic cylinder block 17 in the T-groove 18 according to the size of the flange 1b. Before the flange 1b of the H-shaped steel 1 is placed on the mounting surface 6, the hydraulic cylinder block 17 is in a retracted position so that the flange 1b can be placed on the mounting surface 6 (see Figure 26(a)). Once the flange 1b is placed on the mounting surface 6, it is moved to a position where it can press the upper surface of the flange 1b and is fixed to the reversing table 3 (see Figure 26(b)).

[0074] Figures 31 to 33 show an example of the support device 15. The support device 15 has a swing arm 22 that is rotatably mounted on the base 2 around a vertical axis and supports the H-shaped steel beam 1.

[0075] The swing arm 22 horizontally supports the H-shaped steel beam 1 held on the mounting surface 6 when the mounting surface 6 is in a vertical position. The swing arm 22 is rotatably mounted on the frame 5 of the base 2 via a hinge 23.

[0076] As shown in Figure 32, when the reversing platform 3 is reversed by -90 degrees and when it is reversed by +90 degrees, the swing arm 22 rotates 180 degrees by the hinge 23 to support the lower surface of the flange 1b and maintain the upper surface of the web 1a in a horizontal position.

[0077] As shown in Figure 33, in the case of an H-shaped steel beam 1 with a short flange length (width), the lower surface of the flange 1b is supported by a spacer 24 provided on the upper surface of the swing arm 22, so that the upper surface of the web 1a is horizontal.

[0078] Figures 35 to 37 show an eighth embodiment of the present invention.

[0079] In this embodiment, the H-beam marking device 50 is provided with a marking unit 52 that moves along the H-beam 1, guiding the upper surface of the web 1a and the inner surface of the flange 1b of the H-beam 1. The marking unit 52 is provided with a reading unit 67 that reads the position of the marking unit 52, and marking work can be performed on the upper surface of the web along the end face of the marking unit 52.

[0080] In this embodiment, both digital measuring means 56 and analog measuring means 66 can be used, and the guide portion 51 is configured to guide the upper surface of the web 1a and the inner surface of the flange 1b so that it can travel on the H-shaped steel 1.

[0081] The digital measuring means 56 is a laser distance meter 62, and the laser distance meter 62 is equipped with a display unit 67b of a reading unit 67. As the analog measuring means 66, a ruler 66b provided on the upper surface of the web 1a is used, and as the reading unit 67, a window 67a that allows the scale of the ruler 66b to be visually observed is provided on the bottom plate 77 of the marking unit 52.

[0082] The guide section 51 consists of a flange inner surface guide roller 57 provided on the side surface of the marking unit 52 and the bottom surface of the marking unit 52. The bottom surface slides on the upper surface of the web 1a, and the flange inner surface guide roller 57 is guided on the inner surface of the flange 1b.

[0083] The marking unit 52 is configured so that marking work can be performed on the upper surface of the web 1a along the end face 77a of the bottom plate 77.

[0084] When the end face 77a is used for marking, the plate 54 provided on the bottom plate 77 becomes unnecessary, allowing the marking unit 52 to be made more compact.

[0085] A fixing magnet 78 is provided on the base plate 77 to prevent the marking unit 52 from shifting position during marking work. This fixing magnet 78 is configured to be removed or have its magnetic force turned OFF during movement.

[0086] Furthermore, the scribing holes 53 of the detachable scribing plate 54 can include not only straight lines but also shapes other than straight lines, such as circles and triangles.

[0087] In the fifth to eighth embodiments, the H-beam is attached to the H-beam reversing device for marking work, making it easy to mark both sides A and B of the web.

[0088] The present invention is not limited to the embodiments shown above. For example, the guide section 51 is not limited to a rolling type such as the guide roller 57, but may also be a sliding type. The digital measuring means 56 on which the reading section 67 is provided is not limited to a laser distance meter 62, but can also be a wire-type linear encoder (for example, the SLG series from Suntest Corporation with a display device). The analog measuring means 66 is not limited to a tape measure 66a or a scale 74, but may also be a ruler, a measuring tape, etc. The case of the measuring tape may be fixed to the marking unit, and the end of the tape measure stored inside the case may be locked to the end of the H-beam, so that the position of the marking hole is measured by the reading section 67. Furthermore, the H-beam reversing device is not limited to the examples shown, and any type that can reverse the H-beam is acceptable.

[0089] The scope of the present invention is indicated by the claims rather than the above description, and all modifications within the meaning and scope equivalent to the claims are included. [Explanation of symbols]

[0090] 1 H-beam 1a Web 1b Flange 2 bases 3. Turning platform 4. Shaft section 5 frames 6. Mounting surface 7. Clamping device 8. Drive system 9. Drive source (motor) 10 Drive shaft 11 Reducer 12 Output shafts 13 Transmission means (between output shaft and drive shaft) 14 Transmission means (between the shaft and the drive shaft) 15. Support device 16 Piston Pins 17 Hydraulic Cylinder Block 18 T groove 19 Hydraulic Cylinder 20 Hydraulic Units 21 Hydraulic piping 22 Swingarm 23 Hinge 24 Spacers 25 holes 50 H-beam marking device 51 Guide section 52 Scribing Unit 53 Marking holes 54 plates 55 Mounting part 56 Digital measuring means 57 Guide roller 57a Rolling part 57b Tsubabe 58 shaft 59 Side wall section 60 U-shaped cut grooves 61 wheels 62 Laser Rangefinder 63 Reflector 64 Magnets 65 Fixed part 66 Analog measurement means 66a Measuring tape 66b straight scale 67 Reading section 67a Window 67b Display section 68 Reference Rail 69 frames 70 Marking Unit Connecting Bar 71 Magnets 72 vertical wall 73 long hole 1 / 74 scale 75 Guide projection 76 Connecting part 77 Bottom plate 77a End face 78 Fixing magnets M worker

Claims

1. It has a guide section that is guided and moves in the front-rear direction along the longitudinal direction of the H-shaped steel, and a marking unit provided on the guide section. The marking unit is an H-beam marking device comprising a mounting section for detachably attaching a plate having marking holes for drawing marking lines on the upper surface of the H-beam, and a reading section for reading the position of the marking holes.

2. The H-beam marking device according to claim 1, wherein the reading unit is provided in a digital measuring means such as a laser distance meter or a wire-type linear encoder for measuring the movement position of the marking unit.

3. The H-beam marking device according to claim 1, wherein the reading unit reads the scale of an analog measuring device such as a ruler, scale, or tape measure.

4. The upper surface of the H-shaped steel is the web surface, The guide section has a pair of front-to-back and left-to-right guide rollers that are guided by the left and right sides of the H-shaped steel and move in the front-to-back direction. The guide rollers are provided at both ends of the shaft and move along the upper end surfaces of the flanges on both the left and right sides of the H-shaped steel. The marking unit has left and right side walls provided on both the left and right sides of the mounting portion, The H-shaped steel marking device according to claim 2, further comprising an upwardly open U-shaped cut groove in the left and right side walls into which the shaft engages, and a wheel that travels on the upper surface of the web.

5. The upper surface of the H-shaped steel is the web surface, The guide section has a pair of front and rear guide rollers that are guided by one of the left and right sides of the H-shaped steel and move in the front-rear direction. The guide roller is provided at one end of the shaft and moves along the upper end surface of one of the left or right flanges of the H-shaped steel. The marking unit has left and right side walls provided on both the left and right sides of the mounting portion, The H-shaped steel marking device according to claim 2 or 3, further comprising fixing parts for fixing the shaft and wheels that travel on the upper surface of the web on the left and right side walls.

6. The upper surface of the H-shaped steel is the flange surface. The guide section has a pair of front-to-back and left-to-right guide rollers that are guided by the left and right sides of the H-shaped steel and move in the front-to-back direction. The guide rollers are provided at both ends of the shaft and move along both the left and right ends of the flange. The marking unit has front and rear side walls provided on both the front and rear sides of the mounting portion, The H-shaped steel marking device according to claim 2, wherein the shaft is engaged with the front and rear side walls.

7. The upper surface of the H-shaped steel is the web surface, The guide section has a pair of front-to-back and left-to-right guide rollers that are guided by the left and right sides of the H-shaped steel and move in the front-to-back direction. The guide rollers are provided at both ends of the shaft and move along the upper end surfaces of the flanges on both the left and right sides of the H-shaped steel. The marking unit has front and rear side walls provided on both the front and rear sides of the mounting portion, The H-shaped steel marking device according to claim 2, wherein the shaft is engaged with the front and rear side walls.

8. The aforementioned H-shaped steel is attached to an H-shaped steel reversing device for marking work, The H-beam inversion device comprises a plurality of bases arranged along the longitudinal direction of the H-beam, an inversion table having a mounting surface on which the flange of the H-beam is placed, pivotally supported on the bases by a shaft provided on the inversion table so as to be rotatable, a clamping device for fixing the flange placed on the mounting surface to the mounting surface, and a drive device that rotates the inversion table clockwise and counterclockwise around the shaft to change the position of the mounting surface from a horizontal state to an inclined state. The upper surface of the H-shaped steel is the web surface, Reference rails are provided along the upper and lower end faces of the flange on the aforementioned reversing platform. The guide section comprises a pair of front and rear guide rollers that move guided by the reference rail, a frame that rotatably supports the guide rollers from both the left and right sides, and a pair of front and rear marking unit connecting bars that protrude from the frame. The end of the mounting portion has a vertical wall, and the tip of the marking unit connecting bar engages with the vertical wall. The H-beam marking device according to claim 2, wherein the mounting portion is provided with four wheels that travel along the longitudinal direction on the upper surface of the web, one in the front, one in the back, one in the left, and one in the right.

9. The aforementioned H-shaped steel is attached to an H-shaped steel reversing device for marking work, The H-beam inversion device comprises a plurality of bases arranged along the longitudinal direction of the H-beam, an inversion table having a mounting surface on which the flange of the H-beam is placed, pivotally supported on the bases by a shaft provided on the inversion table so as to be rotatable, a clamping device for fixing the flange placed on the mounting surface to the mounting surface, and a drive device that rotates the inversion table clockwise and counterclockwise around the shaft to change the position of the mounting surface from a horizontal state to an inclined state. The upper surface of the H-shaped steel is the web surface, The analog measuring means is provided on the inversion table along the upper and lower end faces of the flange. The marking unit has the guide portion provided on one of the side walls provided on both the left and right sides of the mounting portion. The reading unit is provided on the side wall portion closest to the mounting surface. The H-shaped steel marking device according to claim 3, wherein wheels that travel on the upper surface of the web are provided on the left and right side walls.

10. An H-beam marking device is provided, which includes a marking unit that moves along the H-beam, guiding the upper surface of the web and the inner surface of the flange of the H-beam, and a reading unit that reads the position of the marking unit, allowing marking work to be performed on the upper surface of the web along the end face of the marking unit.

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