JP3116105U - Clamp type laser level machine - Google Patents

Abstract

To provide a clamp type laser level machine capable of accurately and easily setting the height between stringers without tensioning a water string.
A main body 2 having a laser beam emitting portion at a first end in a longitudinal direction and a main body 2 supported in a swingable manner with a position away from the first end in the longitudinal direction as a fulcrum. A bracket 3, an adjustment screw 4 that is screw-fitted to the bracket 3 so that the tip thereof is in contact with the vicinity of the first end of the main body 2, and adjusts the angle of the main body 2 with respect to the bracket 3 as the screw moves; And a clamp 5 comprising a movable base 5c that is screwed into the fixed base 5b and can sandwich a structure together with the fixed base 5b as the screw moves. And
[Selection] Figure 1

Description

  The present invention relates to a clamp type laser level machine which is attached to a structure such as a stake or a frame member for use in a civil engineering work site, and is preferably used for setting a reference height.

In civil engineering work and construction work such as road construction, the standard stringer has been set as a standard, and excavation etc. was performed along the water string between the stringers. In recent years, it has also been proposed that a leveler with a laser beam is attached to a stake for a stringer, and a laser beam is used as a reference instead of water thread (Patent Document 1).
Registered Utility Model No. 3030910

However, the water string is a hindrance to moving a large machine such as an excavator, and may be dripped or cut due to contact with the machine or a person or shaking of a pile that binds the water thread. Therefore, construction cannot proceed promptly. In addition, since the level described in Patent Document 1 cannot be easily adjusted, the angle must be determined fairly accurately at the stage of attachment to the frame member, which is troublesome.
Therefore, an object of the present invention is to provide a clamp type laser level machine capable of accurately and easily setting the height between the stringers without tensioning the water string.

In order to solve the problem, the clamp type laser level machine of this device is
A main body having a laser beam emitter at the first end in the longitudinal direction;
A bracket that pivotally supports the main body with a position separated from the first end in the longitudinal direction as a fulcrum;
An adjustment screw that is screwed into the bracket so that the tip abuts near the first end of the main body and adjusts the angle of the main body with respect to the bracket as the screw moves;
A U-shaped fixed base fixed to the bracket, and a clamp made of a movable base that is screwed to the fixed base and can sandwich the structure together with the fixed base as the screw moves.

  Since the laser level machine of the present invention includes a clamp, it can be detachably attached to a structure having an appropriate width such as a frame material. And the angle of a main body can be freely changed by rotating an adjustment screw in the attached state. Usually, it attaches to the predetermined height position of one pile for stringing, and a laser beam is emitted toward the other pile. And the angle of a main body is adjusted with an adjustment screw so that the light spot which reached | attained the other pile may become predetermined | prescribed height. During construction, when you want to know the height reference between the stringers, display a light spot on the object surface by inserting a suitable object such as a scale plate (bar) on the laser beam at the desired position between the stringers. You can do it. Unlike water thread, it does not break or droop.

  The fixed base is preferably configured to be rotatable in two directions with respect to the bracket and to be fixed at an arbitrary rotation angle. This is because even if the pile to be attached is inclined, it can be irradiated toward the other pile by rotating in the horizontal direction, and also by rotating in the vertical direction on a slope having a large gradient.

  Since the height between the stringers can be set accurately and easily without tensioning the water string, the construction can proceed smoothly.

An embodiment of the invention will be described with reference to the drawings. FIG. 1 shows a laser level machine with a clamp according to an embodiment, wherein (a) is a front view thereof, (b) is a left side view thereof, and (c) is a bottom view thereof. A laser level machine 1 with a clamp (hereinafter referred to as “level machine 1”) includes a rectangular parallelepiped main body 2 that is long in the left-right direction and short in the front-rear direction and the up-down direction, a bracket 3, and an adjustment screw 4, And a clamp 5.
The main body 2 has a laser beam light emitting portion 2b (hereinafter referred to as “light emitting portion 2b”) at a first end 2a in the longitudinal direction, and a laser beam is emitted in the same direction by turning on a switch (not shown). Can be issued.

  The bracket 3 is entirely made of a single plate, and is opposed to the bottom surface of the main body 2 and has a support portion 3a that is long in the left-right direction, and bearing portions 3b and 3c that are orthogonal to each other and that face each other with the main body 2 in between. Have A screw hole is formed in the end portion close to the light emitting portion 2b in the support portion 3a. A rotation shaft passing through the main body 2 is rotatably passed through the bearing portions 3b and 3c. The shaft holes of the bearing portions 3 b and 3 c are formed slightly closer to the second end 2 c (on the opposite side to the light emitting portion 2 b) than the center of gravity of the main body 2. Therefore, the main body 2 is supported so as to be swingable with respect to the bracket 3 and tries to rotate in a direction in which the first end 2a is lowered by its own weight in the illustrated posture. Further, the bearing portion 3 b extends from one end to the other end in the longitudinal direction of the main body 2 and backs the back of the main body 2. Accordingly, the bracket 3 has an L-shaped cross section when cut along a plane orthogonal to the support portion 3a and the bearing portion 3b.

The adjustment screw 4 is fitted into the screw hole of the support portion 3 a, and the tip thereof is in contact with the bottom surface of the main body 2 near the first end portion 2 a. Therefore, the adjusting screw 4 resists the rotational force caused by the weight of the main body, and changes the angle of the main body 2 with respect to the bracket 3 as shown by the phantom line in FIG.
The clamp 5 has an L-shaped joint 5a whose one surface is rotatably fixed to the support portion 3a, and a U-shaped fixed base 5b whose first surface is rotatably fixed to the other surface of the joint 5a. And a movable base 5c. A screw hole is formed in the third surface facing the first surface of the fixed base 5b, and a male screw of the movable base 5c is fitted into this. A contact plate facing the first surface of the fixing base 5b is fixed to the tip of the male screw. Accordingly, a structure such as a tension pile can be sandwiched between the first surface of the fixed base 5b and the contact plate in accordance with the screw movement of the movable base 5c.

  When setting the height between the stringers using the level machine 1, first, the height as a reference is measured, and one pile A for the stringer is marked. Similarly, mark the other pile B. And the level machine 1 is fixed by pinching the pile A with the clamp 5 as shown in FIG. A laser beam is emitted from the light emitting portion 2b, and the angles of the joint 5a with respect to the fixed base 5b and the bracket 3 with respect to the joint 5a are determined and screwed so that the light spot is in the vicinity of the mark of the other pile B. Thereafter, the adjusting screw 4 is rotated to change the angle of the main body 2 so that the light spot is aligned with the mark of the pile B.

  Thereby, during civil engineering work, a light spot appears on the object and the reference height can be known by applying an appropriate object to the laser beam between the piles A and B at any time. Even if a laser beam interferes with a civil engineering machine or an operator, it is not cut because it is a laser beam, and it does not sag. Therefore, it is possible to always know the exact height.

The laser level machine with a clamp concerning an embodiment is shown, (a) is the front view, (b) is the left side view, and (c) is the bottom view. It is a figure which shows the usage method of said laser level machine with a clamp.

Explanation of symbols

1 Laser level machine with clamp 2 Body 3 Bracket 4 Adjustment screw 5 Clamp

Claims (2)

A main body having a laser beam emitter at the first end in the longitudinal direction;
A bracket that pivotally supports the main body with a position separated from the first end in the longitudinal direction as a fulcrum;
An adjustment screw that is screwed into the bracket so that the tip abuts near the first end of the main body and adjusts the angle of the main body with respect to the bracket as the screw moves;
A clamp-type laser comprising: a U-shaped fixed base fixed to a bracket; and a clamp made of a movable base that is screwed into the fixed base and can sandwich a structure together with the fixed base as the screw moves. Level machine. The clamp type laser level machine according to claim 1, wherein the fixed base is rotatable in two directions with respect to the bracket and can be fixed at an arbitrary rotation angle.

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