JPS594244Y2 - Level for pouring water - Google Patents

Description

[Detailed description of the invention] The present invention relates to the level of use in foundation work, particularly in the method of applying water in architectural foundation work.

In the conventional water-filling method, stakes are driven around the four circumferences of the site where the foundation is to be poured, and a horizontal line is inked on each pile by looking at the level placed in the center. Currently, we are using a level for surveying because there is no level for concrete use.Since the level is for surveying, the height of the legs is high and the stakes cannot be seen, so the splints placed on the stakes cannot be used. The horizontal position is copied onto the stake by looking at it and moving it up and down.In addition, as shown in Figure 1, a reference line is drawn by stretching a string onto a board that is nailed to the stake, and from this reference line, a square ruler is used to trace the horizontal position. The threads are stretched to make right angles, and the positions of each pillar are determined based on the base points of these threads on the mounting board.In this case, the right angles are determined by looking at the threads with a square ruler, which lacks accuracy and requires a lot of effort. .

This proposal was created in view of this, and aims to provide a level dedicated to extremely simple water filling work that can be used for both horizontal and right-angle placement.

To explain the embodiment shown in the drawings below, reference numeral 1 denotes a support rod having a circular cross section and approximately the same height as the water pouring work, and is erected perpendicularly to the ground by a tripod stand 2. The stopper 3 and the arm boss 4 are rotatably and slidably pushed into the support rod 1 with set screws 5 and 6, respectively.
It can be tightened and fixed.

Reference numeral 7 denotes an arm, which is composed of a square pipe 8 fixed to the arm boss 4 and a rack 9 inserted into the square pipe 8.
A pinion 11 supported by a bearing 10 fixed to the shaft is engaged with the rack 9, and a handle 13 fixed to the pinion shaft 12 allows the rack 9 to extend and retract from the square bite tube 8. It can be fixed by pressing with a set screw 14 screwed into the.

Reference numeral 15 denotes a holder holder through which the shaft 17 of the holder 16 is passed, and a bolt 19 which passes through the shank 17 and has a thread 18 on the other end is provided inside the holder, and a spring is inserted between the bolts 19. The handle 22 is screwed through the clamp 21 which is further extended to sandwich the round end of the rack 9 while interposing the handle 20, and by operating the handle 22, the rack 9 and the clamp 21 are inserted.
．． The contact between the clamp 21 and the holder holder 15 is tightened, so that the holder 16 can be tilted and fixed in any direction of 360 degrees on a horizontal plane.

Reference numeral 23 denotes a horizontal sight rotatably mounted on a pedestal 24, and the angle can be regulated and fixed by a scale 25 provided on the pedestal 24 and a lock screw 26.

Reference numeral 27 denotes a support base that supports the pedestal 24 using three screws 28 so that its inclination can be finely adjusted. are doing.

Note that 29 is a level embedded in the pedestal 24 of the horizontal sight 23.

Next, to explain its effect, first of all, in the case of leveling,
The support rod 1 is erected in the center of the piles driven around the four circumferences of the site where the foundation is to be poured, the stopper 3 and the arm boss 4 are inserted, the horizontal sight 23 is set, and the bundle 22 is loosened, the rack 9 and the clamp 21. and clamp 21 and retainer receiver 15
The tightening is released, and the horizontal sight 23 attached to the holder 16 can be tilted in any direction of 360 degrees on the horizontal plane. Set it, and if there is still a slight deviation, finely adjust it using the three screws 28 to make it completely level.

Therefore, the horizontal position can be marked by rotating the horizontal sight 23 on the pedestal 24 and looking at each stake around the four circumferences.

In the case of setting at right angles to thorns, as shown in Fig. 6, set the support rod 1 near the reference thread 30 stretched on the mounting plate, and first tighten the set screw 5.
, 6 and 14, and place the stopper 3 at a height that is as close as possible to the point where the top surface of the horizontal sight 23 does not hit the line.
, and while rotating the arm 7 with respect to the support rod 1, expand and contract it with the bundle 13 and set it with the setscrews 6 and 14 so that the center of the horizontal sight 23 is located approximately directly below the reference thread 30. , then loosen the bundle 22 and set the scale 2
The direction of the horizontal sight 23 when setting 5 to Oo is the reference thread 3
0 direction, check the level by looking through the spirit level 29, and then correct it by looking at the base point of the reference thread 30 with the horizontal sight 23 for confirmation.

Next, turn the horizontal sight 23 by 90 degrees using its scale 25, look through the horizontal sight and mark the placement plate, then turn it further 180 degrees and mark the opposite placement plate to ensure an accurate right angle to the reference thread. Lines can be marked on the board.

The first reference thread 30 is used to guide the client's positioning, and if it is not necessary, it is sufficient to mark the perpendicular reference line on the placement plate without tensioning the thread.

As described above, according to the present invention, the telescoping arm can be rotated around the support rod, so the sight can be displaced in accordance with the reference line and reference point, and the right angle can be achieved. It is easy to do this, and it can be done extremely accurately. Also, since the support rod for the pile for water filling is approximately the same height, the water filling method is within the field of view of the sight, so it is easy to use when leveling. This eliminates the need to splint the stakes as in the past, and because the horizontal sight can be rotated and fixed freely around two axes at right angles to each other, the range of leveling of the horizontal sight is wide.
This has the effect that leveling becomes extremely easy without the need to correct the angle at which the support rod is erected.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the conventional water-filling method, Figures 2 and 3 are front and side views of the level for the water-filling method of the present invention, respectively, and Figure 4 is part A of Figure 2. Fig. 5 is an enlarged sectional view, Fig. 5 is a sectional view taken along line B-B in Fig. 2 (however, the horizontal sight is not sectioned), and Fig. 6 is a perspective view of the water level used in the present invention when aiming at a right angle. . 1...Support rod, 2...Stand, 7.
...Arm, 16...Holder, 17...
...Shaft, 19...Bolt, 23...
・Horizontal sight.

Claims (1)

[Scope of utility model registration request] A bolt 19 is attached to the tip of a telescoping arm 7, which is inserted through a support rod 1 that is approximately the same height as a stake for water filling so that it can rotate, slide, and fix. The axes of the arm 7 are arranged at right angles to each other, so that the bolt 19 can be freely rotated and fixed with respect to the axis of the arm 7, and the bolt 19 is connected to the bolt 1.
Attach the bolt 19 so that it can be rotated and fixed freely around the axis of the bolt 19.
In this case, the shaft portion 17 of the holder 16 is mounted so that the shaft portion 17 can be rotated and fixed freely around the shaft center of the shaft portion 17 by arranging the respective axes of the bolt 19 and the shaft portion 17 in a direction perpendicular to each other. A level for pouring water, in which the holder 16 is controlled at an angle of at least 90' and 180 degrees so that it can be horizontally rotated and fixed, and a horizontal sight 23 equipped with a spirit level 29 is attached.