JP2011017588A - Laser level tripod for slope face - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a laser level tripod for slope face accurately performing excavating and shaping works by means of an excavation support device mounted on a backhoe, by causing a rotary laser device to project light parallel to a slope face, in a slope face shaping work of civil-engineering and construction engineering works.SOLUTION: The surveying tripod for mounting a laser projection device, rotationally radiating a laser light beam includes a level device for grasping the inclination slope in one direction and a level device for grasping the level, in a direction orthogonal to the direction at one end part of a plate-shaped base table for mounting the laser projection device. A collimation telescope is installed on a plate-shaped mount base, extending upward from the other end part of the base table and provided parallel to the base table. The laser level tripod for slope face capable of predicting and adjusting the position of a laser light projection line with the collimation telescope is used to perform laser light projection and slope-surface shaping.

Description

The present invention forms a reference point, a reference line, and a measurement reference plane by irradiating a laser beam, or reciprocating and further rotating, and in particular, in addition to a horizontal reference plane, a predetermined reference is made with respect to a horizontal reference plane. It is related with the tripod of the rotary laser apparatus for slopes which can form the arbitrary inclination setting surface inclined in this angle.

In recent years, rotating laser devices have been used in the case of forming a line, a plane, or the like based on measurement in the height direction, particularly based on a reference height. The rotating laser device rotates while irradiating a laser beam in the horizontal direction, or reciprocally scans to form a rotating reference plane, or to form a partial reference line, reference plane, reference line, and reference point. Is.

For example, it is used to form a reference line for positioning the window frame in relation to the interior, and further, in civil engineering work, it is used to fill in and form a reference horizontal plane for forming a cut surface. Further, some rotary laser devices can form a reference plane inclined in one direction or two directions, and an inclined reference plane can be easily obtained.

Japanese Patent Laid-Open No. 10-38571 is disclosed as a conventional rotary laser device.
JP-A-10-38571

In the conventional rotary laser device, the tilt angle is electrically detected by the tilt sensor and is electrically set by the tilt mechanism, so that it can be set with high accuracy. However, the tilted reference plane cannot be set by the prior art with a tilted reference plane having an angle larger than the horizontal plane by about 30 degrees due to the structure of the device. The slope level laser tripod of the present invention has been developed in order to cope with the excavation support device of Japanese Patent Application No. 2008-329745. In order to excavate the slope with the backhoe attached with this device, the laser beam must be irradiated in parallel with the slope. That is why it was conceived.

On the slope of a construction site such as a civil engineering construction industry, a tripod for surveying that mounts a laser projector that rotates and irradiates a laser beam, is attached to one end of a plate-like base on which the laser projector is mounted. A plate-shaped pedestal that is provided in parallel with the base and has a level that can be seen in the direction of inclination and a level that can be seen in the direction perpendicular to the direction, and extends upward from the other end of the base. A collimating telescope is installed, and the position of the laser projection line can be predicted and adjusted by the collimating telescope. In addition, one leg of the tripod has a four-node parallel link structure, and a link on the slope side of the four-node parallel link structure can be fixed to a stringed through plate hung on the slope. The standard measure consists of a four-bar parallel link structure that is graduated on the two parallel links on the side facing the slope, and the link on the slope side of the four-bar parallel link structure is fixed to a through plate that is hung on the slope. A leveling device is provided on the other link parallel to the slope, and a telescopic leg is provided on the four-bar parallel link structure to prevent falling.

By using the laser level tripod for slope of the present invention, the tilt angle in two directions can be easily set, and fine adjustment can be adjusted with a collimating telescope. It is now possible to shape the slope accurately and quickly without the need for instructions.

A slope laser level tripod according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a slope laser level tripod according to the present invention. FIG. 2 is a side view of the slope laser level tripod of the present invention.
FIG. 3 is an explanatory view of the vicinity of the base of the laser level tripod for slope according to the present invention.
Reference numeral 1 denotes a laser level tripod for slope according to the present invention. 2 is a bi-directional level, 3 is a collimating telescope, 4 is a base, 5 is a pedestal, 6 is a posture adjustment screw, 7 is a direction adjustment screw, 8 is a telescopic leg, 9 is a parallel link leg, 10 is a laser level, 11 is a set screw for a through plate, and 12 is a through plate.

The two-way level 2 will be described. Here, in FIG. 3, the inclination direction and the longitudinal direction of the through plate are defined as the X axis, and the direction intersecting with the X axis by 90 degrees is defined as the Y axis. The two-way level 2 is formed by connecting and fixing two air ducts in a T-shape when viewed from above on a horizontal plane, and a base 4 so that it can rotate around the longitudinal axis of the Y-axis air duct. Is attached. The airway tube rotating in the X axis is fixed by being surrounded by a ring centered on the position of the airway located in the horizontal state of the airway tube. Mark the highest end of the ring in a horizontal position. The ring is configured to be rotatably supported from the outside. In the portion surrounding the ring of the base 4, when the alveolar tube is leveled in an inclined state, an inclined gradient is formed on the upper side so as to match the mark attached to the ring, for example, 10%, 20%, 3 minutes, 4 Mark the minute appearance.

The collimating telescope 3 is for collimating the directions of the base 4 in the X-axis direction and the Y-axis direction, and a line parallel to the pedestal 5 and a line perpendicular to the pedestal 5 can be seen as a cross in the field of view. Yes. The posture adjusting screw is not attached and is collimated parallel to the surface of the base 5. In FIG. 3, the pedestal 5 is marked in the X-axis direction and the Y-axis direction, and the collimating telescope 3 is attached in accordance with the marking. The collimating telescope 3 can be easily set in the direction of both the X axis and the Y axis according to the marking.

The two-way level 2 is attached to the base 4 so that the X-axis Y-axis of the base 4 is parallel to the X-axis Y-axis of the two-way level 2 in FIG. A laser projector 10 that projects light while rotating the laser beam can be installed. On the other hand, a support column for the base 5 extends upward. The surface of the base 4 and the surface of the pedestal 5 are parallel, and the laser beam and the collimation line A of the collimating telescope 3 are kept parallel.

The posture adjustment screw 6 is used for fine adjustment in the X-axis and Y-axis directions. The direction adjusting screw 7 finely adjusts the direction. The extendable legs 8 are for standing the parallel link legs 9 perpendicular to the slope, and are extendable. The parallel link leg 9 is used by being fixed to a slope or a through plate 12 set to the slope, and the slope of the slope is matched with the inclination of the base 4 by the parallel link structure. A through-plate set screw 11 is installed on the link on the slope side of the parallel link leg 9, and the through-plate 12 can be sandwiched and fixed by tightening a thumbscrew. Further, when there is no through plate 12, the front ends of the two link links that are not parallel to the parallel link leg 9 are pointed so that they step into the ground by stepping on their feet. One of the shafts of each link is made of a thumbscrew, and the shaft of each link can be fixed by tightening. The parallel link legs 9 have a four-bar link structure, and the links facing each other are the same length and parallel. The laser beam corresponding to the backhoe excavation support apparatus must project the laser beam at a height of about 1.2 meters from the shaping surface 16 to be excavated. Therefore, the two links that are not inclined in the parallel links have a length of about 1.2 meters. In most cases, the ground is uneven before shaping. For this reason, when the sloped string 12 is inserted, the sheet is often raised by 30 cm or 50 cm from the finished surface. In this case, the parallel link leg 9 is folded in a diamond shape, and the parallel link structure is used to adjust the distance from the shaping surface 16 to the laser projection surface to about 1.2 meters.

The laser level 10 is commercially available, does not have an automatic level setting mechanism, and can project a surface parallel to the base 4. The through-plate set screw 11 can fix the through-plate 12 and the parallel link leg 9 by tightening the thumbscrew. In the civil engineering work, the through plate 12 is referred to as sword tension, and the shape of the finished mold, such as the height and the inclined surface, is represented by the through plate 12.

The scale 13 includes a level 14, and a scale similar to that of the X-axis of the two-way level 2 is attached so that the level can be leveled and the scale can be seen by looking at the scale. Further, it has a structure similar to that of the parallel link leg 9 of the laser level tripod 1 for the slope, and the scale plate 15 has two links in the direction perpendicular to the slope.

FIG. 5 is a diagram showing a method for installing the slope of the slope laser level tripod 1.
H1 is the distance from the collimation line A of the collimating telescope to the shaping surface 16, S1 is the distance from the collimation line A to the shaping surface 16 above the normal surface of the installed laser plane tripod 1, and S2 is the distance from the collimation line A to the shaping surface 16 at the place where the tension is applied, and S3 is the distance from the collimation line A above the normal surface of S2 to the shaping surface 16.
First, the through-plate set screw 11 provided on the slope-side link of the slope-side laser level tripod 1 is fastened to the through-plate 12 to fix the link on the through-plate side. The four-joint link leg 9 is rotated so that the height of the base 4 is about 1.2 meters above the finished surface, and the wing screw of each link shaft is tightened and fixed. This is the laser beam height for the backhoe to which the excavation support device is attached.
Loosen the expansion / contraction stop screws of the two expansion / contraction legs so that they are horizontal to the Y-axis direction, step on the pointed tip with the foot with the foot, and fix the expansion / contraction stop screw. Check if the gradient is correct with the level for tilting. Adjust the level in the Y-axis direction with the posture adjustment screw 6 and adjust it horizontally. Next, the collimating telescope 3 is attached to the pedestal 5 in accordance with a mark stamped at an angle of 90 degrees. An inscription is also made on the upper side of the collimating telescope 3 which can be rotated. It is assumed that the crosshairs in the field of view of the collimating telescope 3 are set. Both the X axis and the Y axis should be collimated. The penetrating plate 12 to be collimated is fastened to the penetrating plate 12 and the through plate 12 set screw 11 provided on the slope side link is fastened to the through plate 12 to fix the link on the through plate side. A brace bar is hung and the scale plate stands vertically in the direction of the shaping surface 16X axis, and the wing screw of the square link shaft is tightened and fixed. Then, the telescopic legs 9 are extended and fixed so as to stand vertically from the shaping surface 16 Y-axis direction. When the slope distance is short, when the slope laser level tripod 1 and the measure 13 are set, the mark 13 is aligned with the Y-axis direction of the collimating telescope 3, and the measure 13 in the Y-axis direction is viewed. Here, the Y-axis direction and the position of the staff 13 may be different. The length of the collimation line A is compared with the length of the collimation line A in accordance with the position of the scale 13. Using the posture adjusting screw 6, the distance of S2 is adjusted to H1. When the left scale plate 15 and the right scale plate 15 have different readings, this means that the gradient between the through plate 12 on which the slope laser level tripod 1 is installed and the through plate 12 on which the measure 13 is installed. It is different. The slope of both through plates 12 must be confirmed. Correct one of the slopes and set again.
If the slope distance is long and the slope laser level tripod 1 and the measure 13 are installed, first, the gauge on the upper side of the through plate 12 on which the slope laser level tripod 1 is installed is viewed. Check if it matches the X-axis of the collimating telescope. When deviated, the actual gradient is less than the gradient of the through plate because the through plate 12 is not hung perpendicular to the gradient direction. In many cases, H1 and S2 are slightly different because of some bending error and gradient error. If there is a large difference, this means that the slope of the plate is different from the slope of the slope laser level tripod 1. Match this again and correct it. When S1 is set to H1, the collimating telescope is set to the Y axis and S2 is viewed. S2 is set to H1, and the Y-axis posture adjusting screw 6 is rotated to adjust. Look at S3 with the collimating telescope 3 for confirmation. If they are different, the slopes of the two through-plates 12 are different. When the posture adjustment screw 6 is rotated and adjusted, the gradient of the X-axis of the two-way level 2 changes. Therefore, in the final adjustment, consider the gradient of the X-axis of S1, S2, S3 and the two-level level 2 And decide. When the final adjustment is finished, the laser level is attached to the base 4, and the excavation support device is configured by laser projection in consideration of the difference between the height H of the laser beam B and the height H1 of the collimation line A. The slope shaping is started by the backhoe attached with.

It is a perspective view of the laser level tripod for slopes of this invention. It is a side view of the laser level tripod for slopes of this invention. It is explanatory drawing of the base vicinity of the laser level tripod for slopes of this invention. It is a side view of the scale for exclusive use of the laser level tripod for slopes of the present invention. It is the figure which showed the slope installation method of the laser level tripod for slopes of this invention.

DESCRIPTION OF SYMBOLS 1 Laser level tripod for slope 2 Bidirectional level 3 Sighting telescope 4 Base 5 Base 51 Eye mark 52 Scale 6 Posture adjustment screw 7 Direction adjustment screw 8 Telescopic leg 9 Parallel link leg 10 Laser level 11 12 Penetration plate 13 Scale 14 Level 15 Scale plate 16 Shaped surface

Claims (3)

On the slope of a construction site such as a civil engineering construction industry, a tripod for surveying that mounts a laser projector that rotates and irradiates a laser beam, is attached to one end of a plate-like base on which the laser projector is mounted. A plate-shaped pedestal that is provided in parallel with the base and has a level that can be seen in the direction of inclination and a level that can be seen in the direction perpendicular to the direction, and extends upward from the other end of the base. A laser level tripod for daylighting, characterized by installing a collimating telescope and predicting and adjusting the position of the laser projection line with a collimating telescope. The one leg of the tripod has a four-bar parallel link structure, and a device is provided that can fix a link on the slope side of the four-bar parallel link structure to a tension plate that is hung on the slope. The laser level tripod for slopes as described. It consists of a four-bar parallel link structure that is graduated on two parallel links on the side facing the slope, and is equipped with a device that can fix the link on the slope side of the four-bar parallel link structure to a through plate hung on the slope A scale having a level on the other link parallel to the slope so that the slope can be seen, and a telescopic leg for preventing overturning in the 4-bar parallel link structure.

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