JP2991600B2 - Laser gradient setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser gradient setting device for setting a reference line for performing various civil works.

[0002]

2. Description of the Related Art In civil engineering work, a horizontal reference line or a reference line inclined at a required angle with respect to the horizontal is required. A laser gradient setting device is used to set such a reference line.

For example, when a concrete pipe is buried in sewage works, it must be inclined at a required angle so as not to be bent.

[0004] As a typical work for burying a concrete pipe or the like in the soil, there is a work method of digging down the ground, installing concrete pipes sequentially in the digged trenches, and burying them.

[0005] The ground is dug down to a depth equal to or greater than the depth at which the concrete pipe is to be installed for each fixed straight section, and the concrete pipe is installed on a temporary base provided at the bottom of the groove.

Such concrete pipes are used for water supply and sewerage, etc.
It is provided as a flow path for flowing a liquid material, and is installed with a certain degree of inclination and without bending. If the buried concrete pipe meanders up and down, left and right, the liquid material stays and becomes clogged or leaks into the ground, failing to function as a flow path. Therefore, an appropriate reference line is required for burying the concrete pipe.

As such a reference line, a laser beam is convenient, does not slack even at a long distance like a thread, does not become a hindrance during work, and further cuts by interfering with work, concrete pipes and the like. It will not be done.

[0008] The laser gradient setting device forms a reference line when a concrete pipe is installed.

A conventional laser gradient setting device will be described with reference to FIGS.

The conventional laser gradient setting device 1 emits a laser beam serving as a reference line in the horizontal direction in a state where the laser beam is installed horizontally. Is inclined by a required angle to become a reference line having a gradient.

At every straight line section, a vertical hole 3 having a depth equal to or larger than the concrete pipe is dug at the starting point where the concrete pipe 2 is to be buried, and a buried groove 4 continuous with the vertical hole 3 is formed at a depth at which the concrete pipe is set. Excavate above. The laser gradient setting device 1 is installed in the vertical hole 3 and emits a laser beam at a gradient θ to form a reference laser beam L. The concrete pipe 2 is installed in the buried groove 4 via a temporary base 5 so that the axis coincides with the reference laser beam L.

When the axis of the concrete pipe 2 matches the reference laser beam L, the concrete pipe 2 is buried by burying the burying groove 4.

The laser gradient setting device 1 must accurately set the horizontal position at the time of the initial setting.
Conventionally, the horizontal position setting of the laser gradient setting device 1 is as follows.
A support 6 is provided above the vertical hole 3, a transit 7 is installed on the support 6, and the transit 7 is lowered from the transit 7.
And set a known point 10. Further, a laser gradient setting device is installed in the vertical hole 3, the down swing 8 is made to coincide with the center of the laser gradient setting device, and further, the down swing 9 is drooped from the laser gradient setting device 1, and the down swing 9 is the known swing. Was performed by matching the point 10 of FIG.

[0014]

In the conventional method of setting the position using the down swing, the swing down of the down swing, the length adjustment of the thread, and the like are performed by two persons, and the down swing from the transit and the laser gradient setting device are used. It is necessary to make repetitive adjustments so that the downward swing from the point exactly matches the reference point, and the workability is poor and the work becomes very complicated. Also, when the position shift occurs due to the vibration due to the passage of vehicles etc. during construction,
When the construction is temporarily suspended and then resumed, or when a periodic check is performed, the same work as described above must be repeated, and a great deal of time has been spent.

The present invention has been made in view of the above circumstances, and has made it possible to easily perform alignment of a laser gradient setting device.

[0016]

SUMMARY OF THE INVENTION The present invention provides a reference laser beam.
Reference laser beam emitter that emits a line and is rotatably supported
And moving the reference laser beam emitter horizontally and vertically.
Driving means for rotating, and tilting the reference laser beam emitter.
Inclination angle setting means for setting an inclination angle;
A vertical beam emitting means for emitting a laser beam toward the
The present invention relates to a laser gradient setting device comprising:
Setting means is provided rotatably on the reference laser beam emitter.
Oscillating frame, and an inclined
Tilt sensor for detecting angle and encoder for detecting tilt angle
And the reference laser beam emitter and the oscillating frame.
Drive means for setting the tilt angle between
A vertical beam emitting means,
The light emitting unit and the beam emitted from the beam emitting unit
Laser gradient setting device having means for directing
Means for directing the beam in the vertical direction, a beam emitting unit,
Through the center of rotation of the reference laser beam from the beam emitter
Beam splitting means for splitting the laser beam emitted in the vertical direction
The present invention relates to a laser gradient setting device comprising:

[0017] There position make settings of vertical laser gradient setting device by the reference laser beam, the more the inclination angle setting means
Set the gradient of the reference laser beam emitted horizontally.
You.

[0018]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the same components as those shown in FIG. 5 are denoted by the same reference numerals.

The laser gradient setting device 11 emits a laser beam 12 not only in the horizontal direction but also in the vertical direction. The laser beam 12 emitted downward matches the known point 10 and the laser beam emitted upwards. By making the reference 12 coincide with the reference point of the transit 7, the positioning of the laser gradient setting device 11 can be easily performed.

Instead of making the laser beam 12 coincide with the reference point of the transit 7, the target 13 may be set at a reference position and the laser beam 12 may be made to coincide with the target 13.

Next, the laser gradient setting device 11 will be described with reference to FIGS.

A box-shaped outer frame 14 is provided with a hanging frame 15 having an inverted concave shape, and a pair of spherical seats 16 having a horizontal axis are provided inside the hanging frame 15 so as to face each other.

The reference laser beam emitter 17 is provided on both sides of the reference laser beam emitter 17, and the spherical shaft 18 and the spherical seat 16 are fitted to each other. On the other hand, it is provided to be rotatable in three axial directions.

The spherical shaft 18 is provided at the front end with the spherical seat 1.
6, a spherical surface is formed, and a cylindrical portion is formed on the base portion. An inverted concave swinging frame 19 is rotatably provided on the cylindrical portion. Pins 20 and 21 are provided to project in two horizontal directions from the spherical surface of the spherical shaft 18.

A left-right rotation drive unit 22 is provided on the pin 20 side of the suspension frame 15 and a torsion drive unit 23 is provided on the pin 21 side. A pin 24 that matches the reference laser beam L from the rear end face of the reference laser beam emitter 17.
And an elevation drive unit 25 is provided on the pin 24 side.

The left-right rotation drive unit 22 includes a gear box 26 fixed to the suspension frame 15 and a guide shaft 2 provided in a horizontal direction from the gear box 26.
7, screw shaft 28, screw shaft 2
8 and a screw shaft 28, which is slidably fitted to the guide shaft 27,
And a left / right adjustment motor 30 for rotating the motor through the gear box 26. The pin 20 is attached to the slider 29.
An engaging pin 31 slidably engages with the spring 3 so that the pin 20 is always in contact with the engaging pin 31.
2 urged rightward in FIG.

The screw shaft 28 is rotated by the rotation of the left and right adjustment motor 30, and the slider 2 is rotated.
9 is displaced in the horizontal direction, the horizontal displacement of the slider 29 is transmitted to the pin 20 via the engaging pin 31, and the reference laser beam emitter 17 is integrated with the swing frame 19 in the left-right direction. To rotate.

The torsion drive unit 23 includes a gear box 33 fixed to the suspension frame 15, a guide shaft 34 vertically suspended from the gear box 33,
A screw shaft 35 (not shown), a slider 39 screwed to the screw shaft 35 and slidably fitted to the guide shaft 34, and a torsional drive motor for rotating the screw shaft 35 via the gear box 33. 36. An engaging pin 37 that slidably engages with the pin 21 is erected on the slider 39,
The pin 21 is urged downward in FIG. 3 by a spring 38 so as to always contact the engagement pin 37.

The screw shaft 35 is rotated by the rotation of the torsional drive motor 36, and the slider 39 is displaced in the vertical direction. The reference laser beam emitter 17 is transmitted to the pin 21 to rotate the reference laser beam emitter 17 integrally with the swing frame 19.

The elevation drive unit 25 includes a gear box 40 fixed to the outer frame 14 via a bracket 67, a guide shaft 41 vertically suspended from the gear box 40, and a screw shaft 42 (not shown). A slider 4 screwed to the screw shaft 42 and slidably fitted to the guide shaft 41.
3. The screw shaft 42 is connected to the gear box 4
It has an elevation drive motor 44 that rotates through zero. An engaging pin 45 slidably engaged with the pin 24 is erected on the slider 43, and the pin 24 is
The spring 68 is urged downward in FIG.

The screw shaft 42 is rotated by the rotation of the elevation drive motor 44, and the slider 43 is displaced in the vertical direction. The reference laser beam emitter 17 is transmitted to the pin 24 to lower the reference laser beam emitter 17 integrally with the swing frame 19.

A pin 46 extending parallel to the pin 20 is provided at the rear end side of the swing frame 19, and the reference laser beam emitter 17 and the swing frame 19 are relatively rotated via the pin 46. An angle setting unit 47 is provided on a side surface of the reference laser beam emitter 17.

The angle setting unit 47 includes a gear box 4 fixed to a side surface of the reference laser beam emitter 17.
8, a guide shaft 49 vertically suspended from the gear box 48, a screw shaft 50, and screwed to the screw shaft 50 and the guide shaft 4
9 and an angle setting motor 52 for rotating the screw shaft 50 through the gear box 48. The angle setting motor 52
Is provided with an encoder 69 (described later). The slider 51 is provided with an engagement pin 53 slidably engaged with the pin 46, and the pin 46 is urged downward in FIG. 2 by a spring 54 so as to always contact the engagement pin 53. .

The screw shaft 50 is rotated by the rotation of the angle setting motor 52, and the slider 51 is displaced in the vertical direction. The swing frame 19 is transmitted to the reference laser beam emitter 17 to be lowered.

A vertical beam emitting unit 55 is provided at the lower end of the swing frame 19.

The vertical beam light emitting unit 55 will be described.

A laser beam emitting portion 56 is provided on one of the vertical inner wall surfaces facing the swing frame 19, and a reflecting mirror 57 is provided on the other of the vertical inner wall surfaces so as to face the laser beam emitting portion 56. The reflecting mirror 57 and the laser beam emitting unit 5
6, a beam splitter 58 is provided, and the laser beam emitted from the laser beam emitting unit 56 is transmitted by the beam splitter 58 to the transmitted light and the reference laser beam emitter 17.
Is divided and reflected by the laser beam 12 passing through the center of rotation (the center of the spherical surface of the spherical axis 18).

The laser beam 12 is provided above and below the swing frame 19, the suspension frame 15, and the outer frame 14.
Through holes 59, 60, 61, and 62 through which holes pass. On the upper surface of the swing frame 19, an inclination sensor 63 parallel to the pins 20 and an inclination sensor 64 perpendicular to the inclination sensor 63 are provided. A through hole 65 through which the reference laser beam L passes is formed in the front surface of the outer frame 14,
A support leg 66 is provided on a lower surface of the outer frame 14. The support leg 66 has an adjusting function and the outer frame 14
The coarse adjustment of horizontal position setting can be performed.

The left and right adjustment motor 30 of the left and right rotation drive unit 22 includes a left and right adjustment controller 71,
3, the torsional drive motor 36 is driven by a torsional controller 72, the elevation drive motor 44 of the elevation drive unit 25 is driven by an elevation controller 73, and the angle setting motor 52 of the angle setting unit 47 is driven by an angle controller 74. A rotation angle signal from the encoder 69 is input to 74.

The left / right adjustment controller 71 and the torsion controller 7
2. The elevation controller 73 and the angle controller 74 are each controlled by a controller 70, and the controller 70 receives detection signals from the inclination sensors 63 and 64,
An operation panel 75 is connected to the control device 70.

The operation will be described below.

First, the laser gradient setting device 11 is installed in the vertical hole 3, the coarse horizontal adjustment is performed by the support leg 66, the switch of the operation panel 75 is operated, and the operation start is input to the control device 70.

First, the angle setting motor 52 is driven, and the mechanical reference positions of the reference laser beam emitter 17 and the swing frame 19, that is, the tilt sensor 63 and the tilt sensor 6
4 and the reference laser beam emitter 17
Is adjusted to a position where the optical axis of the laser beam becomes parallel.

Next, the inclination sensor 63, the inclination sensor 6
Based on the detection result from the control unit 4, the control command is issued to the left / right adjustment controller 71, the torsion controller 72, and the elevation controller 73 so that the detection results of the inclination sensors 63 and 64 are zero, that is, horizontal. The left / right adjustment controller 71 according to the control command,
The torsion controller 72 and the elevation controller 73 drive the left / right adjustment motor 30, the torsion drive motor 36, and the elevation drive motor 44.

When the tilt sensor 63 and the tilt sensor 64 are horizontal, the reference laser beam L emitted from the reference laser beam emitter 17 is horizontal, and the laser beam 12 directed vertically from the beam splitter 58 is vertical. Match.

The horizontal position of the laser gradient setting device 11 of the laser beam 12 is adjusted so that the known point 10 matches the reference point of the transit 7 or the target 13 (see FIG. 1). Adjustment of the position of the laser gradient setting device 11 by the laser beam 12 can be performed by one person because the attitude of the laser gradient setting device 11 itself can be adjusted.

When it is desired to make the reference laser beam L have a gradient, the control panel 70 sets and inputs the gradient from the operation panel 75. The controller 70 issues a drive command to the angle controller 74, and the angle controller 74 inputs a drive pulse corresponding to the drive command to the angle setting motor 52. The angle setting motor 52 rotates in proportion to the number of drive pulses,
The actual rotation amount is detected by the encoder 69, and the rotation amount of the angle setting motor 52 is monitored. Thus, only the swing frame 19 is inclined.

When the tilting operation of the swing frame 19 is completed, a completion signal is input to the control device 70, and the horizontal adjustment controller 71, the torsion controller 72, and the elevation controller 73 move the swing frame 19 horizontally. Is issued.

The operation of making the swing frame 19 horizontal is the same as that described above, and a description thereof will be omitted.

When the swing frame 19 becomes horizontal again, the reference laser beam L emitted from the reference laser beam emitter 17 is set to a required gradient.

Thus, the concrete pipe 2 can be installed at a desired gradient without bending by adjusting to the reference laser beam L.

In the above embodiment, the laser beam emitting section 56
Is provided separately to emit the laser beam 12, but the reference laser beam L emitted by the reference laser beam emitter 17 may be divided and used as the laser beam 12.

[0054]

As described above, according to the present invention, the position setting of the laser gradient setting device can be performed by one person, and the workability is remarkably improved without shaking like a down swing.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention.

FIG. 2 is a vertical sectional view of the previous embodiment.

FIG. 3 is a front sectional view of the previous embodiment.

FIG. 4 is a control block diagram of the first embodiment.

FIG. 5 is an explanatory view from the side of a conventional example.

FIG. 6 is an explanatory view from the front of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Laser gradient setting device 22 Left-right rotation drive unit 23 Torsion drive unit 25 Elevation drive unit 47 Angle setting unit 55 Vertical beam emission unit 56 Laser beam emission unit 57 Reflector 58 Beam splitter 63 Inclination sensor 64 Inclination sensor

Claims (4)

(57) [Claims] A reference laser beam is emitted and is rotatably supported.
Reference laser beam emitter and reference laser beam emitter
Driving means for rotating the horizontal and vertical directions,
Tilt setting method for setting the tilt angle of the reference laser beam emitter
Emit laser beam to step and / or vertical
And a vertical beam emitting means . 2. The tilt angle setting means includes: a swing frame rotatably provided on the reference laser beam emitter; a tilt sensor provided on the swing frame to detect a tilt angle; The laser gradient setting device according to claim 1, further comprising: an encoder that performs the setting and a driving unit that sets an inclination angle between the reference laser beam emitter and the swing frame. 3. The laser gradient setting device according to claim 1, wherein said vertical beam emitting means has a beam emitting section and means for directing a beam emitted from said beam emitting section in a vertical direction. 4. The means for directing the beam in the vertical direction comprises a beam emitting section and a beam splitting section for splitting the beam into a laser beam emitted vertically through a rotation center of a reference laser beam from the beam emitting section. The laser gradient setting device according to claim 3.