JP2022092116A - Laser equipment for ceiling marking and ceiling marking method - Google Patents

Abstract

To irradiate a ceiling surface with laser beam for marking without arranging laser equipment on a floor surface.SOLUTION: Laser equipment for ceiling marking 100 is provided, comprising: a rope 20 having both ends 21 and 22 respectively attached to both side ends 58 and 59 of an existing opening 50 of a ceiling panel 40; a pulley 13 around which the rope 20 is wound; and a laser irradiation device 10 having a laser irradiator 12 linearly radiating a laser beam. A center portion 23 of the rope 20 is wound around the pulley 13 of the laser irradiation device 10, so that the laser irradiation device 10 is suspended from the ceiling panel 40. The laser irradiator 12 irradiates a ceiling surface 41 with linear center line laser beam 31 with reference to the existing opening 50 of the ceiling panel 40.SELECTED DRAWING: Figure 1

Description

The present invention relates to a ceiling marking laser device that irradiates a ceiling with a laser beam for marking, and a method for marking the ceiling.

When installing an opening on the ceiling, it is necessary to mark the position of the opening on the ceiling surface. As a device for easily marking on the ceiling, a ceiling marking device has been proposed in which a laser device arranged on the floor surface irradiates a laser in a rectangular shape corresponding to an opening on the ceiling surface (for example, Patent Document 1). , 2).

Japanese Unexamined Patent Publication No. 2006-58153 Japanese Unexamined Patent Publication No. 2000-91254

By the way, the air conditioner may be replaced due to the renovation work of the building. In this case, the indoor unit may be replaced on the ceiling, and an additional opening for inspecting the indoor unit may be provided near the indoor unit. At this time, it is necessary to mark the position of the opening, but desks, chairs, cabinets, etc. are arranged in the room, and the laser device is arranged on the floor as described in Patent Documents 1 and 2. You may not be able to use the delivery device.

Therefore, an object of the present invention is to irradiate the ceiling surface with a laser beam for marking without arranging a laser device on the floor surface.

The laser device for marking the ceiling of the present invention linearly irradiates a laser beam with a rope attached to both ends of an opening of the ceiling or a device attached to the ceiling, and a pulley around which the rope is wound. A laser irradiation device for ceiling marking including a laser irradiation device including a laser irradiation device, wherein the central portion of the rope is wound around the pulley of the laser irradiation device, and the laser irradiation device is suspended from the ceiling. It is characterized in that the laser irradiator irradiates the ceiling surface with a linear laser beam with reference to the opening of the ceiling or the device attached to the ceiling.

In this way, the laser irradiation device is suspended from the ceiling by the ceiling opening or ropes attached to both ends of the equipment mounted on the ceiling, so that the laser irradiation device is positioned on the opening or the center line of the equipment by gravity. , The ceiling surface can be irradiated with a linear laser beam based on the opening or the device. Further, it is possible to irradiate the ceiling surface with the laser beam for marking without arranging the laser irradiation device on the floor surface.

In the laser device for marking the ceiling of the present invention, the linear laser light that the laser irradiator irradiates the ceiling surface passes through the opening of the ceiling or the center of both ends of the device attached to the ceiling. , The center line laser beam extending in the direction orthogonal to the virtual line connecting both ends thereof may be included.

As a result, the ceiling surface can be irradiated with the center line laser beam so as to overlap the opening or the center line of the device, and the center line of the opening can be easily marked on the ceiling surface.

In the laser device for marking the ceiling of the present invention, the linear laser light that the laser irradiator irradiates the ceiling surface is the virtual connection between the opening of the ceiling or the both ends of the device attached to the ceiling. It may further include at least one horizontal line laser beam that is parallel to the line and intersects the center line laser beam.

As a result, it is possible to easily irradiate the laser beam for marking the center line of the aperture and the end portion of the aperture.

In the ceiling marking laser device of the present invention, the laser irradiation device includes a drive mechanism for changing the radiation angle of the laser light of the laser irradiator and a control unit for controlling the operation of the drive mechanism. The control unit calculates the vertical distance between the laser irradiator and the ceiling surface based on the winding angle of the rope around the pulley, and determines the calculated vertical distance between the laser irradiator and the ceiling surface. Based on the horizontal distance along the centerline laser beam from the emission port of the laser beam of the laser irradiator to the horizontal line laser beam, the laser irradiation device in the vertical virtual plane containing the centerline laser beam. The irradiation angle of the horizontal line laser light in the vertical direction may be calculated, and the radiation angle of the laser light of the laser irradiator may be adjusted to the irradiation angle by the drive mechanism to irradiate the ceiling surface with the horizontal line laser light. ..

As a result, it is possible to easily irradiate the end portion of the opening with a laser beam for marking.

In the laser device for marking the ceiling of the present invention, the laser irradiation device includes a pulley drive unit that rotationally drives the pulley, and the control unit includes the laser irradiator attached to the opening of the ceiling or the ceiling. The pulley may be rotated by the pulley driving unit to adjust the winding position of the pulley with respect to the rope so as to be in the center of both side ends of the device.

Thereby, the position of the laser irradiator can be more accurately arranged in the center of the opening or both side ends of the device, and the ceiling surface can be easily irradiated with the laser beam for marking the center line of the opening.

The ceiling marking method of the present invention includes a preparatory step for preparing a rope, a laser irradiation device including a pulley around which the rope is wound, and a laser irradiator that irradiates a laser beam linearly, and an opening of the ceiling or a ceiling. A rope attachment step of attaching both ends of the rope to both ends of the equipment mounted on the ceiling, and a suspension in which the central portion of the rope is wound around the pulley of the laser irradiation device and the laser irradiation device is suspended from the ceiling. It is characterized by including a lowering step and a laser irradiation step of irradiating a ceiling surface with a linear laser beam from the laser irradiator with reference to the ceiling opening or the equipment attached to the ceiling. ..

In the ceiling marking method of the present invention, the laser irradiation step passes through the center of the ceiling opening or the center of both side ends of the device attached to the ceiling, and is orthogonal to the virtual line connecting the both side ends. The extending center line laser beam may be applied to the ceiling surface from the laser irradiator.

In the ceiling marking method of the present invention, the laser irradiation step further intersects the centerline laser beam parallel to the virtual line connecting the ceiling openings or the bilateral ends of the equipment attached to the ceiling. The ceiling surface may be irradiated with at least one horizontal line laser beam from the laser irradiator.

In the ceiling marking method of the present invention, the vertical distance between the laser irradiator and the ceiling surface is calculated based on the winding angle of the rope around the pulley, and the calculated laser irradiator and the ceiling surface are used. In a vertical virtual plane containing the centerline laser beam, based on the vertical distance and the horizontal distance along the centerline laser beam from the emission port of the laser beam of the laser irradiator to the horizontal line laser beam. Even if the irradiation angle of the horizontal line laser light with respect to the vertical direction of the laser irradiation device is calculated, the radiation angle of the laser light of the laser irradiator is adjusted to the irradiation angle, and the horizontal line laser light is irradiated to the ceiling surface. good.

INDUSTRIAL APPLICABILITY The present invention can irradiate a ceiling surface with a laser beam for marking without arranging a laser device on the floor surface.

It is a perspective view which shows the structure of the laser apparatus for ceiling marking of an embodiment. It is an elevation view which saw the laser apparatus for ceiling marking of an embodiment from the arrow A of FIG. It is an elevation view which saw the laser apparatus for ceiling marking of an embodiment from the arrow B of FIG. It is a perspective view of the marking jig used when marking a new opening on a ceiling surface using the ceiling marking laser apparatus of the embodiment. It is a flowchart which shows the procedure of marking a new opening on a ceiling surface using the laser device for ceiling marking of an embodiment.

Hereinafter, the configuration of the ceiling marking laser device 100 of the embodiment will be described with reference to the drawings. As shown in FIG. 1, the ceiling marking laser device 100 includes a rope 20 and a laser irradiation device 10. In the following description, the ceiling marking laser device 100 is suspended from both side ends 58 and 59 of the existing opening 50 for mounting an existing air conditioner (not shown) provided on the ceiling panel 40. , It will be described as being used for marking out for the installation of the new opening 60 adjacent to the existing opening 50. Further, in FIGS. 1 to 3, the direction in which the existing opening 50 and the new opening 60 are lined up on the ceiling surface 41 will be described as the Y direction, the direction orthogonal to the Y direction will be described as the X direction, and the vertical direction will be described as the Z direction.

As shown in FIG. 1, the laser irradiation device 10 includes a laser irradiator 12 inside a casing 11 to which a pulley 13 is rotatably attached, and a drive mechanism 15 that changes the radiation angle of the laser light of the laser irradiator 12. , The pulley drive unit 14 that rotationally drives the pulley 13 and the control unit 16 are housed. The pulley 13 is rotatably attached to the inside of the casing 11. Further, the center of gravity position 19 of the laser irradiation device 10 is on the lower side of the pulley 13 in the Z direction.

The laser irradiator 12 irradiates the ceiling surface 41 of the ceiling panel 40 with a linear laser beam from the laser beam emission port 12a. The linear laser beam may be configured to irradiate the ceiling surface 41 with the linear laser beam by, for example, an optical element such as an optical fiber, a prism, or a lens, or the laser pointer may be scanned at high speed to irradiate the ceiling surface 41. The surface 41 may be configured to appear to be irradiated with a linear laser beam. The laser beam emission port 12a of the laser irradiator 12 is arranged at the center position of the laser irradiation device 10, and is located at the lower side of the pulley 13 in the Z direction as in the center of gravity position 19. Further, the laser beam emission port 12a is on the positive side in the Y direction by a distance D from the pulley 13.

The rope 20 may be thick enough to be wound around the pulley 13 of the laser irradiation device 10. One end 21 and the other end 22 of the rope 20 are connected to one side end 58 and the other side end 59 of the existing opening 50, respectively, and are attached to the ceiling panel 40 so as to hang down from both side ends 58 and 59 in a V shape. It is installed. Therefore, the central portion 23 of the rope 20 hanging in a V shape is located at the center of both side ends 58 and 59.

The existing opening 50 has four end faces 51, 52, 54, which are an end face 51 on the minus side in the Y direction, an end face 52 on the plus side in the Y direction, an end face 54 on the minus side in the X direction, and an end face 55 on the plus side in the X direction. It is a square opening composed of 55. Both side ends 58 and 59 are located at the X-direction plus-side end and the X-direction minus-side end of the end surface 52 on the plus-side in the Y-direction. Further, the center line 56 in the Y direction of the existing opening 50 is a virtual line extending in the Y direction at the center of both side ends 58 and 59. Further, since the virtual line 52a connecting both side ends 58 and 59 is a virtual line extending in the X direction orthogonal to the Y direction, the center line 56 in the Y direction of the existing opening passes through the center of both side ends 58 and 59. It is a line extending in a direction orthogonal to the virtual line 52a connecting both ends 58 and 59.

Further, the center line 57 of the end face 52 on the plus side in the Y direction extending in the Z direction at the center of the existing opening 50 in the X direction is a virtual line extending in the Z direction at the center of the end faces 58 and 59 on both sides. Further, the center line 57 is a line that passes through the central portion 23 of the rope 20 that hangs down in a V shape of the rope 20.

As described above, the rope 20 is attached to the existing opening 50, and the rope 20 is attached to the pulley 13 so that the rotation axis 13a of the pulley 13 of the laser irradiation device 10 is parallel to the Y axis and intersects the center line 57. When wound, the load of the laser irradiation device 10 is applied to the vicinity of the central portion 23 of the rope 20. Since the center of gravity position 19 of the laser irradiation device 10 is located below the Z direction of the pulley 13, the pulley 13 rotates due to its own weight, and the center of gravity position 19 of the laser irradiation device 10 moves to the central portion 23 of the rope 20. .. As a result, the center position of the laser irradiation device 10 becomes the center of both side ends 58 and 59.

Further, since the center of gravity position 19 of the laser irradiation device 10 is located on the lower side in the Z direction of the pulley 13, the laser irradiation device 10 is placed on the ceiling via the rope 20 so that the rotation axis 13a of the pulley 13 is horizontal. Suspended from the panel 40. In this way, the laser beam emission port 12a of the laser irradiator 12 arranged at the center position of the laser irradiation device 10 is located at the center of both side ends 58 and 59, and is positioned downward by a vertical distance H from the ceiling surface 41. Therefore, it is located on the plus side in the Y direction by a distance D from the center line 57, and is suspended from the ceiling panel 40 so that the direction of the radiation port 12a faces the extending direction of the center line 56.

Further, when the position of the center of gravity 19 of the laser irradiation device 10 and the emission port 12a of the laser light of the laser irradiation device 12 are not at the center of the both side ends 58 and 59 due to the rotation of the pulley 13, the control unit 16 of the laser irradiation device 10 may be used. The pulley 13 shown in FIG. 2 is rotationally driven by the pulley drive unit 14 so that the center of gravity 19 of the laser irradiation device 10 and the laser beam emission port 12a of the laser irradiator 12 are at the center of both side ends 58 and 59. The winding position of the pulley 13 may be adjusted.

As described above, when the laser beam is linearly irradiated from the laser beam emission port 12a of the laser irradiation device 12 of the laser irradiation device 10 suspended from the ceiling panel 40 via the rope 20 toward the ceiling surface 41, the ceiling surface is irradiated. The center line laser beam 31 extending in the Y direction along the center line 56 in the Y direction of the existing opening 50 is irradiated to the 41.

The center line laser beam 31 passes through the center of both side ends 58 and 59 and extends in a direction orthogonal to the virtual line 52a connecting both side ends 58 and 59, like the center line 56 in the Y direction of the existing opening 50. It becomes. That is, the center line laser beam 31 is a linear laser beam radiated to the ceiling surface 41 with reference to the center line 56 of the existing opening 50 of the ceiling panel 40.

Next, a case where the laser irradiation device 10 irradiates the horizontal line laser light 32, 33 intersecting the center line laser light 31 at a predetermined position on the ceiling surface 41 will be described. Here, the horizontal line laser beams 32 and 33 are laser beams extending linearly in the X direction at the Y-direction positions of the end face 62 on the minus side in the Y direction and the end face 63 on the plus side in the Y direction of the new opening 60, respectively.

As shown in FIG. 2, when the central portion 23 of the rope 20 is wound around the pulley 13, the rope 20 is stretched in a V shape with the central portion 23 at the lower end and is wound around the pulley 13 of the rope 20. The winding angle is 2α. The laser irradiation device 10 includes a winding angle detecting means for detecting the winding angle of the rope 20 inside (not shown). The winding angle detecting means is, for example, a camera that captures the vicinity of the pulley 13 and the central portion 23 of the rope 20 from the Y-axis direction, and a calculation that processes the image captured by the camera to calculate the winding angle of the rope 20. It may be composed of means. Further, the winding angle detecting means may be configured by a calculation means that detects the contact position between the pulley 13 and the rope 20 and calculates the winding angle at this contact position.

Here, referring to FIGS. 2 and 3, the emission port of the laser beam shown in FIG. 3 is based on the winding angle of the rope 20 detected by the winding angle detecting means (angle 2α in the example shown in FIG. 2). A method of calculating the angles θ1 and θ2 formed between the directions toward the horizontal laser beams 32 and 33 from 12a and the direction perpendicular to the ceiling surface 41 will be described. Here, the angles θ1 and θ2 are the irradiation angles of the horizontal laser beams 32 and 33 with respect to the vertical direction of the laser irradiation device 10.

First, based on the winding angle of the rope 20 (angle 2α in the example shown in FIG. 2) detected by the winding angle detecting means, the ceiling surface 41 and the rotation shaft 13a of the pulley 13 are reached by the following equation 1. The first vertical distance h1 is calculated. Here, L0 is the length of the rope 20, which is a known value.
h1 = L0 / 2 * cos (α) －－－ (Equation 1)

As shown in FIG. 2, since the vertical distance between the rotation shaft 13a of the pulley 13 and the center of the laser irradiator 12 is h2 (known value), the vertical distance H between the ceiling surface 41 and the center of the laser irradiator 12. Is expressed by the following equation 2.
H = h1 + h2
= L0 / 2 * cos (α) + h2 －－－ (Equation 2)

The horizontal laser beams 32 and 33 are positioned in the Y direction of the end face 62 on the minus side in the Y direction and the end face 63 on the plus side in the Y direction of the new opening 60. The horizontal distances in the Y direction from the end face 52 on the plus side in the direction are the positions of L1 and L2, respectively. Here, the end surface 52 on the positive side in the Y direction of the existing opening 50 is the surface through which the center line 57 passes, and the position of the emission port 12a of the laser light of the laser irradiator 12 is a distance from the center line 57 to the positive side in the Y direction. Only D is away. Therefore, a horizontal line from the emission port 12a of the laser beam in the plane of the vertical virtual surface 39 where the center line 57 is located, that is, the vertical virtual surface 39 including the center line laser light 31 at the center of both side ends 58 and 59 of the existing opening 50. The angle θ1 between the direction toward the laser beam 32 and the direction perpendicular to the ceiling surface 41 is calculated by the following equation 3.
θ1 = tan ^-1 ((L1-D) / H) －－－ (Equation 3)

Similarly, the angle θ2 between the direction from the laser beam emission port 12a in the plane of the vertical virtual surface 39 toward the horizontal laser beam 33 and the direction perpendicular to the ceiling surface 41 is calculated by the following equation 4. To.
θ2 = tan ^-1 ((L2-D) / H) －－－ (Equation 4)
In Equations 3 and 4, the distances L1, L2, and D are known values.

Substituting the above equations 1 and 2 into equations 3 and 4, the direction from the laser beam emission port 12a shown in FIG. 3 toward the horizontal laser beams 32 and 33 and the ceiling surface are based on the winding angle of the rope 20. Equations 5 and 6 for calculating the angles θ1 and θ2 formed in the direction perpendicular to 41 are as follows.
θ1 = tan ^-1 ((L1-D) / (L0 / 2 * cos (α) + h2))-(Equation 5)
θ2 = tan ^-1 ((L2-D) / (L0 / 2 * cos (α) + h2))-(Equation 6)

Therefore, the control unit 16 of the laser irradiation device 10 detects the winding angle 2α of the rope 20 by the winding angle detecting means described above, and based on the detected winding angle 2α, the angle is determined by the equations 5 and 6. Calculate θ1 and θ2. Then, the control unit 16 sets the angle formed by the drive mechanism 15 between the direction toward the horizontal laser beams 32 and 33 from the laser beam emission port 12a in the plane of the vertical virtual surface 39 and the direction perpendicular to the ceiling surface 41 by θ1. Or adjust to θ2. As a result, the horizontal laser beams 32 and 33 extending from the laser irradiator 12 in the direction orthogonal to the center line laser beam 31 are irradiated to the ceiling surface 41.

As a result, the ceiling marking laser device 100 has linear horizontal line laser beams 32 and 33 on the ceiling surface 41 located at positions separated by L1 and L2 in the Y direction with respect to the end surface 52 on the plus side in the Y direction of the existing opening 50. Can be irradiated.

As described above, the ceiling marking laser device 100 irradiates the ceiling surface 41 with the center line laser beam 31 along the center line 56 in the Y direction of the existing opening 50, and at the same time, the positive side in the Y direction of the existing opening 50. The horizontal laser beams 32 and 33 are irradiated to positions separated by L1 and L2 in the Y direction with respect to the end face 52 of the above. The center line laser beam 31 is at the position of the center line 61 of the new opening 60, and the horizontal line laser beams 32 and 33 are located at the positions of the end face 62 on the minus side in the Y direction and the end face 63 on the plus side in the Y direction of the new opening 60, respectively. be.

Therefore, when marking the position of the new opening 60 on the ceiling surface 41, the opening position of the new opening 60 is marked on the ceiling surface 41 by using the marking jig 70 as shown in FIG.

The marking jig 70 shown in FIG. 4 is attached to two opposite end faces of a square frame-shaped main body 71 having the same external dimensions as the new opening 60, a handle 76 mounted on the main body 71, and the main body 71. It is composed of a pin 77 and the pin 77. A mark 78 is attached to the center of the pin 77 in the width direction.

When marking the opening position of the new opening 60, the mark 78 of the pin 77 is set in the direction of the center line laser beam 31, one end surface 72 of the main body 71 is aligned with the position of the horizontal line laser beam 32, and the other facing each other. The end face 73 of the above is aligned with the position of the horizontal laser beam 33. Then, a marking means such as a pencil is moved along the four end faces 72 to 75 to mark the new opening 60 on the ceiling surface 41.

In the ceiling marking laser device 100 of the above-described embodiment, the laser irradiation device 10 is suspended from the ceiling panel 40 by a rope 20 to which both ends 21 and 22 are attached to both side ends 58 and 59 of the existing opening 50 of the ceiling panel 40. Since it is lowered, the laser irradiation device 10 is positioned on the center lines 56 and 57 of the existing opening 50 by gravity, and the linear center line laser beam 31 and the horizontal line laser beams 32 and 33 based on the existing opening 50 are placed on the ceiling surface 41. Can be irradiated to.

Further, the ceiling marking laser device 100 irradiates the ceiling surface 41 with the center line laser beam 31 and the horizontal line laser beams 32, 33 without arranging the laser irradiation device 10 on the floor surface, so that a desk or chair can be applied to the floor surface. Even when the air-conditioning device is repaired with the equipment such as the above installed, the new opening 60 can be easily marked on the ceiling surface 41.

In the above description, the laser irradiation device 10 is suspended by attaching both ends 21 and 22 of the rope 20 to both side ends 58 and 59 of the existing opening 50, but the present invention is not limited to this. As long as it can be used as a reference position with respect to the position of the new opening 60, it is not limited to the existing opening 50, and both ends 21 and 22 of the rope 20 are attached to both ends of the air conditioning equipment and lighting equipment attached to the ceiling panel 40. May be attached to suspend the laser irradiation device 10.

The configuration and operation of the ceiling marking laser device 100 have been described above. However, the laser irradiation device 10 is suspended from the ceiling panel 40 by a rope 20, and the ceiling surface 41 is irradiated with a linear laser to form a new opening 60. The step of marking out may be performed manually. In this case, the procedure for performing each marking is as shown in the flowchart shown in FIG.

First, as shown in step S101 of FIG. 5, a laser irradiation device 10 including a rope 20, a pulley 13 around which the rope 20 is wound, and a laser irradiator 12 that linearly irradiates a laser beam is prepared ( Preparation process).

Next, as shown in step S102 of FIG. 5, both ends 21 and 22 of the rope 20 are attached to both side ends 58 and 59 of the existing opening 50 of the ceiling panel 40 (rope attaching step).

Next, as shown in step S103 of FIG. 5, the central portion 23 of the rope 20 is wound around the pulley 13 of the laser irradiation device 10 to suspend the laser irradiation device 10 from the ceiling panel 40 (suspension step).

Then, as shown in step S104 of FIG. 5, a linear laser beam is irradiated from the laser irradiator 12 to the ceiling surface 41 with reference to the existing opening 50 of the ceiling panel 40 (laser irradiation step). In the laser irradiation step, the center line laser beam 31 that passes through the center of both side ends 58 and 59 of the existing opening 50 of the ceiling panel 40 and extends in the direction orthogonal to the virtual line 52a connecting both side ends 58 and 59, and the ceiling panel. The laser irradiator 12 may irradiate the ceiling surface with horizontal line laser light 32, 33 parallel to the virtual line 52a connecting both side ends 58, 59 of the existing opening 50 of 40 and intersecting with the center line laser light 31.

Then, as shown in step S105 of FIG. 5, the center line laser beam 31, the horizontal line laser beam 32, and 33 irradiated on the ceiling surface 41 are combined with the marking jig 70 described with reference to FIG. 4 to the ceiling surface. The new opening 60 is marked on 41.

In this way, even when the new opening 60 is manually marked on the ceiling surface 41, the center line laser beam 31 and the horizontal line laser beams 32 and 33 are applied to the ceiling surface 41 without arranging the laser irradiation device 10 on the floor surface. Since it is possible to irradiate the ceiling surface 41, the new opening 60 can be easily marked on the ceiling surface 41 even when the air conditioner is repaired while the equipment such as a desk or chair is placed on the floor surface.

10 Laser irradiator, 11 Casing, 12 Laser irradiator, 12a Radiation port, 13 Pulley, 13a Rotating shaft, 14 Pulley drive, 15 Drive mechanism, 16 Control, 19 Center of gravity, 20 Rope, 21 One end, 22 End , 23 Central part, 31 Center line laser light, 32, 33 Horizontal line laser light, 39 Vertical virtual surface, 40 Ceiling panel, 41 Ceiling surface, 50 Existing openings, 51, 52, 54, 55, 62, 63, 72-75 End face, 52a virtual line, 56, 57, 61 center line, 58, 59 side end, 60 new opening, 70 marking jig, 71 main body, 76 handle, 77 pin, 78 mark, 100 marking laser device.

Claims (9)

Rope with both ends attached to the opening of the ceiling or both ends of the equipment attached to the ceiling,
A laser device for ceiling marking including a laser irradiation device including a pulley around which the rope is wound and a laser irradiator that irradiates a laser beam linearly.
The central portion of the rope is wound around the pulley of the laser irradiation device, the laser irradiation device is suspended from the ceiling, and the laser irradiation device is used as a reference from the opening of the ceiling or the device attached to the ceiling. Irradiating the ceiling surface with a linear laser beam,
A laser device for marking out ceilings. The laser device for ceiling marking according to claim 1.
The linear laser beam that the laser irradiator irradiates on the ceiling surface passes through the center of the ceiling opening or the center of both ends of the device attached to the ceiling, and with respect to a virtual line connecting the two ends. Includes a centerline laser beam extending in the orthogonal direction,
A laser device for marking out ceilings. The laser device for ceiling marking according to claim 2.
The linear laser beam that the laser irradiator irradiates on the ceiling surface intersects the centerline laser beam in parallel with the virtual line connecting the opening of the ceiling or the both ends of the device attached to the ceiling. Further include at least one horizontal laser beam,
A laser device for marking out ceilings. The laser device for ceiling marking according to claim 3.
The laser irradiation device includes a drive mechanism that changes the radiation angle of the laser beam of the laser irradiation device.
Including a control unit that controls the operation of the drive mechanism.
The control unit
The vertical distance between the laser irradiator and the ceiling surface is calculated based on the winding angle of the rope around the pulley.
Based on the calculated vertical distance between the laser irradiator and the ceiling surface and the horizontal distance along the centerline laser beam from the emission port of the laser beam of the laser irradiator to the horizontal line laser beam. The irradiation angle of the horizontal line laser beam with respect to the vertical direction of the laser irradiation device in the vertical virtual plane including the center line laser beam is calculated.
The drive mechanism adjusts the emission angle of the laser beam of the laser irradiator to the irradiation angle, and irradiates the ceiling surface with the horizontal line laser beam.
A laser device for marking out ceilings. The laser device for ceiling marking according to claim 4.
The laser irradiation device is
A pulley drive unit that rotationally drives the pulley is included.
The control unit
The pulley is rotated by the pulley drive unit so that the laser irradiator is centered on the opening of the ceiling or the center of both ends of the device mounted on the ceiling so that the position where the pulley is wound around the rope is set. To adjust,
A laser device for marking out ceilings. It ’s a method of sumi-inking the ceiling.
A preparatory step for preparing a rope, a laser irradiation device including a pulley around which the rope is wound, and a laser irradiator that irradiates a laser beam linearly.
A rope mounting process in which both ends of the rope are attached to the ceiling opening or both ends of the equipment mounted on the ceiling.
A suspension step of winding the central portion of the rope around the pulley of the laser irradiation device and suspending the laser irradiation device from the ceiling.
A laser irradiation step of irradiating a ceiling surface with a linear laser beam from the laser irradiator with reference to the ceiling opening or the equipment mounted on the ceiling.
Ceiling marking method featuring. The ceiling marking method according to claim 6.
In the laser irradiation step, the laser irradiation is performed by irradiating the center line laser beam extending in a direction orthogonal to the virtual line connecting the both end portions through the center of the ceiling opening or the both side ends of the device attached to the ceiling. Irradiating the ceiling surface from the vessel,
Ceiling marking method featuring. The ceiling marking method according to claim 7.
The laser irradiation step further emits at least one horizontal line laser beam that intersects the centerline laser beam parallel to the virtual line connecting the ceiling openings or the bilateral ends of the equipment mounted on the ceiling. Irradiating the ceiling surface from the irradiator,
Ceiling marking method featuring. The ceiling marking method according to claim 8.
The vertical distance between the laser irradiator and the ceiling surface is calculated based on the winding angle of the rope around the pulley.
Based on the calculated vertical distance between the laser irradiator and the ceiling surface and the horizontal distance along the centerline laser beam from the emission port of the laser beam of the laser irradiator to the horizontal line laser beam. The irradiation angle of the horizontal line laser beam with respect to the vertical direction of the laser irradiation device in the vertical virtual plane including the center line laser beam is calculated.
Adjusting the emission angle of the laser beam of the laser irradiator to the irradiation angle and irradiating the ceiling surface with the horizontal line laser beam.
Ceiling marking method featuring.

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