JPH06167113A - Adjustment of placed concrete level - Google Patents

Abstract

PURPOSE:To obtain an adjusting method of concrete level by which there is no deviation in placed concrete volume and even a non-professional can easily and accurately level the placed concrete plane on a floor face. CONSTITUTION:A number of tripods 1 which can move up and down a disc 3 connected downward together with the vertical movement of a catch 2 are arranged evenly on a floor face 4. A light receiver 6 is attached to the catch 2 every tripod 1, 1,... by turns by means of a magnet. The height of respective discs 3 is adjusted by the received level of laser beam 5a from a transmitter 5 erected at the nearby position of the floor face 4 to obtain a required placed concrete level. While placing concrete 7 on the floor face at the state that the light receiver 6 is attached to the tripod 1a at the almost center of floor face 4 and laser beam 5a is received from the transmitter 5, the placed face 8 of concrete is made flat by regarding the height of the discs 3, 3,... of respective tripods 1, 1... as the basic level of the concrete floor face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting the level of a concrete placing surface, which is capable of easily and accurately taking a plane level of concrete to be placed on a floor surface in building construction.

[0002]

2. Description of the Related Art Conventionally, when placing concrete on a floor surface in building construction or the like, in order to obtain the level of the floor, a string is stretched to a predetermined level and the concrete is poured into the floor, or the concrete is divided by a predetermined amount. Sinking, the worker sets up a level measuring instrument at an appropriate place, and another worker stands on the floor where concrete should be placed, and adjusts the level of concrete cast on the spot. Was doing.

[0003]

However, not only is it difficult to take the floor level described above, but it is difficult for even a fairly skilled person to take it without variation, and the hands cannot be released during the level adjustment. Other work cannot be done in parallel, and if you put in shoes and level the concrete to adjust the pouring height of the concrete, the placed concrete will move up and down, and the level will change. There is. In this case, since the amount of concrete on the floor surface fluctuates, even if tamping is performed, the plane level of the poured concrete remains varied.

The present invention has been made in view of such circumstances, and there is no variation in the amount of poured concrete, and the level of the poured concrete on the floor can be easily and accurately taken by an amateur. The purpose is to provide a new method for adjusting the level of a concrete placing surface.

[0005]

In order to solve the above problems, the method for adjusting the level of a concrete placing surface according to the present invention has a catch 2 which can be moved up and down by a handle 2a at the upper end thereof. A large number of tripods 1, 1 ... Which can vertically move a disc 3 connected downward as they are moved up and down are prepared, and the tripods 1 are arranged substantially evenly on a floor surface 4 on which concrete is to be placed, and the concrete is placed. An oscillator 5 by a laser beam 5a which can be rotated horizontally in the horizontal direction is installed in the vicinity of a floor surface 4 to be installed, and one photoreceiver 6 with a magnet is installed on the floor surface 4 for each tripod 1, 1, ... A magnet is sequentially attached to the catch 2, and the height of the disk 3 is adjusted according to the height of the laser beam 5a received from the oscillator 5 to set a desired pouring concrete level. Disk 1 of 1 ... When the height setting is completed, while pouring concrete 7 on the floor surface 4 while receiving the laser beam 5a from the oscillator 5 with the light receiver 6 installed on the tripod 1a at the substantially center of the floor surface 4, After leveling the concrete placing surface 8 with the height of the disks 3, 3 of each tripod 1, 1 ... as the reference level of the concrete floor surface, all the tripods 1, 1 ... are removed and the concrete placing surface is removed. 8 is compacted by tamping, and footprints 9 of the tripods 1, 1 ... After removing the tripods 1, 1, ...

[0006]

In the above structure, the tripods 1, 1 ... Have a catch 2 that can be moved up and down, and the disk 3 moves up and down as the catch 2 moves up and down to change the height of the tripod 1 from the floor 4. To do. The oscillator 5 is rotatable horizontally and horizontally,
The laser beam 5a is emitted at a constant height. The magnet portion of the light receiver 6 can be attached to each catch 2 of the tripod 1, 1 ,. When the laser beam 5a from the oscillator 5 is emitted to each light receiver 6, the height of the light receiver 6, that is, the height from the floor surface 4 of the disk 3 that moves up and down according to the elevation of the catch 2 that supports the light receiver 6. Can be measured. Therefore, a plurality of tripods 1, 1, ... Are installed on the floor surface 4 on which the concrete 7 is to be placed, and the height of the light receiver 5 is adjusted according to the laser beam 5a emitted from the oscillator 5 installed in the vicinity thereof. Accordingly, the heights of the disks 3 of the tripods 1, 1, ... From the floor surface 4 can be uniformly set to a predetermined concrete floor level.

However, even after the level setting of all the disks 3 is completed, the tripod 1a at the substantially center of the floor 4 is left with the light receiver 6 attached, and the weight of the concrete 7 to be cast later is set. Try to measure level changes.

One light receiver 6 may be provided, and the catches 2 of the tripods 1, 1, ... Installed on the floor surface 4 are sequentially attached to set the height of each disk 3.

According to the present invention, the concrete 7 is poured onto the floor surface 4 with the height of each disk 3 thus set as a reference.
The cast concrete 7 between the disks 3 is leveled flat by scraping the upper surface. By this leveling work, the total amount of concrete cast on the floor surface 4 is determined. When the leveling is finished, the tripods 1, 1 ... are removed, and not only the lower part of the tripods 1, 1 ... but also the entire concrete placing surface is tamped, especially the footprints 9 of the tripods 1, 1 ... remaining after the concrete placing surface 8. ,
9 ... is filled up by tamping.

[0010]

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

FIGS. 1 (a) to 1 (d) are side views showing, in the order of steps, a method for adjusting the level of a concrete placing surface of the present invention.

In the tripod 1 shown in the drawing, the handle 2a moves the support rod 2b up and down so that the support rod 2b fixed to the upper end can be moved up and down, and the disk 3 is fixed to the lower end of the support rod 2b. , As the catch 2 moves up and down, it moves up and down. The light receiver 6 can be detachably attached to the catch 2 by using a magnet provided on the lower surface of the light receiver 6. About ten of these tripods 1 are easily made to the floor surface 4 on which concrete is to be placed. Also, the number of the light receiver 6 may be one.

The oscillator 5 is capable of emitting a laser beam 5a and can be fixed on a catch 2 similar to the tripod 1. However, the installation height of the oscillator 5 is fixed to a fixed height so as not to change. Keep it.

In order to carry out the present invention using such a tripod 1, an oscillator 5 and a light receiver 6, first, as shown in FIG. 1 (a), concrete 7 is placed on a floor surface 4 to be cast. About ten tripods 1, 1 ... Prepared in advance are installed substantially evenly, and one oscillator 5 is installed near the floor surface 4. Then, on the catch 2 of the tripod 1 arranged on the floor 4, one light receiver 6 is attached via a magnet in a state where it is directed toward the oscillator 5.

Then, the laser beam 5a is emitted from the oscillator 5 and applied to the light receiver 6, and the handle 2 is rotated to move the height of the disk 3 up and down, so that the disk 3 is positioned on a predetermined concrete floor surface. The level of the light receiver 6 is defined as a standard level L. After that, the photodetector 6 is removed and then attached to the catch 2 on the adjacent tripod 1, the laser beam 5a from the oscillator 5 is again applied to the photodetector 6, and the height of the catch 2 is increased while turning the handle 2a of the tripod 1. Change the light receiver 6
The rotation of the catch 2 is stopped when the irradiation position of the laser beam 5a with respect to is positioned at the standard level L set above. As a result, the height of the disk 3 of the tripod 1 from the floor surface 4 becomes the same as the height set above. In this way, the same operation is performed on all the tripods 1, so that the disks 3, 3 ...
Set the same height.

After the heights of all the disks 3, 3 ... Are set, the photodetector 6 is mounted on the tripod 1 which is installed substantially in the center of the floor surface 4.
The laser beam 5a from the oscillator 5 is applied to the light receiver 6 in advance by attaching it to the catch 2 of a. This is because the oscillator 5 outputs a signal when the height of the concrete floor surface 8 fluctuates due to the bending of the slab due to the weight of the concrete when the concrete is placed in the next step.

Next, as shown in FIG. 1 (b), while pouring the concrete 7 on the floor surface 4 on the basis of the height of each disc 3 set above, the concrete 7 between the discs 3 is poured.
The upper surface of the is completely flattened as shown in Fig. 1 (c).
By this leveling work, the total amount of concrete 7 cast on the floor surface 4 is determined.

When the leveling of the concrete placing surface 8 is completed,
As shown in FIG. 1 (d), all the tripods 1, 1, ... Are removed, and not only the lower parts of the tripods 1, 1 ,. The footprints 9, 9 ... of the remaining tripods 1, 1 ...

[0019]

According to the level adjusting method for the concrete pouring surface of the present invention described above, since the tripods 1 can stand on their own, a plurality of tripods 1, 1, ... They can be arranged in a state, and the heights of the disks 2, 2, ... Can be set uniformly.

Further, it is only necessary to prepare one light receiver 6, and the height of the disk 2 can be easily set.

Further, since it is possible to set reference levels by a plurality of discs 2, 2, ... At a plurality of positions on the floor surface 4, the concrete pouring level can be made uniform and the variation as in the prior art does not occur. The concrete pouring level can be set.

Therefore, according to the present invention, even the layman can easily and accurately take the plane level of the poured concrete, and the tripod can be left standing.
Evening work between tripods can be performed without increasing the number of workers, which is also useful for reducing the number of workers.

[Brief description of drawings]

1 (a) to 1 (d) are side views showing, in the order of steps, a method for adjusting a level of a concrete placing surface according to the present invention.

[Explanation of sign]

1 ... tripod, 2 ... catch, 2a ... handle, 3 ... disk,
4 ... Floor surface, 5 ... Oscillator, 5a ... Laser beam, 6 ... Photoreceiver, 7 ... Placing concrete, 8 ... Concrete placing surface,
9 ... Footsteps after removing the tripod.

Claims (1)

[Claims] 1. A tripod 1, 1 ... Having a catch 2 which can be moved up and down by a handle 2a at its upper end, and capable of vertically moving a disc 3 connected to the lower side when the catch 2 is raised and lowered is prepared. 1 is arranged substantially evenly on a floor surface 4 on which concrete is to be placed, and a laser beam 5 which is horizontally rotatable in the vicinity of the floor surface 4 on which concrete is to be placed.
The oscillator 5 according to a is installed, and one photoreceiver 6 with a magnet is installed on the floor surface 4 for each tripod 1, 1, ... Depending on the height of the received light of the laser beam 5a, the disk 3
Is adjusted to a desired level of concrete for pouring, and when the height of the disk 3 of each tripod 1, 1 ... Is completed, the light receiver 6 is mounted on the tripod 1a substantially at the center of the floor surface 4. With the laser beam 5a from the oscillator 5 received while the concrete 7 is being poured, the height of the disks 3, 3 of each tripod 1, 1 ... After leveling the concrete placing surface 8 flatly, all the tripods 1, 1 ... Are removed and the concrete placing surface 8 is compacted by tamping,
After the tripods 1, 1 ... have been removed, the tripods 1, 1, ...
The footprint 9 is a level adjustment method for the concrete pouring surface, which is characterized in that it is made up by tamping.