JPH0431408Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a leveling jig used when leveling the top of a foundation.

Conventional technology Generally, when constructing a building foundation, first, formwork is assembled, anchor bolts are installed, and concrete is poured.Then, after the formwork is removed, top mortar is applied to the top surface of the foundation. Leveling is performed, but before leveling the top, it is necessary to accurately determine the level of the top in advance.

Figures 7 and 8 show the conventional method of leveling the top. First, the formwork and the sides of the fabric part 2 of the removed concrete foundation 1 are leveled at a certain level. Perform marking and draw marking line 3. Reference numerals 4 and 4 denote a pair of left and right ruler plates whose vertical widths match the height from the marking line 3 to the top level. These ruler plates 4, 4 are brought into contact with both sides of the fabric portion 2 by matching. Then, as shown in Fig. 8, these ruler plates 4, 4 are held on both sides of the cloth part 2 by the square-shaped holding fittings 5, and in this state, the top mortar is applied between both ruler plates 4, 4. 6 is poured and leveled so that its upper surface matches the upper end surface of the ruler plate 4.

Problems to be Solved by the Invention In the above-mentioned conventional top leveling work, there is a marking stage for attaching the marking line 3, and a step in which the ruler plates 4, 4 are aligned with the marking line 3, and the clamping bracket is 5, it is easy to cause errors at each stage of fixing, which makes it difficult to achieve top-level accuracy.
Another problem is that the more precision you try to increase, the more time and effort it takes. In view of these conventional drawbacks, this invention provides a jig that can easily perform highly accurate leveling work.

Means for solving the problem In order to achieve this purpose, in this invention, an anchor bolt is screwed into the upper end of the anchor bolt that protrudes from the foundation, and the height is adjusted by changing the screwing depth. A mounting base, and the upper end of a ruler plate that is attached to this mounting base and has both ends projected outward from the side of the foundation, and that serves as a formwork for pouring the top leveling material such as mortar, is placed on the lower surface of this protrusion. It is characterized by comprising a reference member which is brought into contact with the mounting base, and a level bar for visually checking the level which is provided to protrude upward from the mounting base.

Function When the mounting base 11 is screwed onto the upper end of the anchor bolt 29 and the screwing depth is changed, the vertical height position of the reference member 16 attached to this mounting base 11 is changed, so it can be adjusted depending on the level. The top end is leveled by making such adjustments while visually observing the level bar 21 projecting upward, and the upper end of the ruler plate 32 is placed in contact with the lower surface of the reference member 16 as in the conventional one.

Embodiment FIG. 1 is an exploded perspective view of the jig of this invention. In the figure, reference numeral 11 denotes a circular mounting hole with upper and lower through holes 12 formed in the center, as also shown in FIG. 3. A female screw 13 is formed in the through hole 12 of the base. In addition, the mounting base 11
A male screw portion 14 having a larger diameter than the through hole 12 is integrally provided on the lower surface of the through hole 12 . A nut 15 is screwed and attached to this male threaded portion 14.

Reference numeral 16 designates a reference plate formed by bending both ears of a band-shaped metal plate downward to form abutment edges 17, 17. At the center of the reference plates 17, 17 in the longitudinal direction,
Attachment hole 1 having a larger diameter than the male thread part 14
8 is formed, and the male screw portion 14 is inserted into this mounting hole 18, and the nut 1 is inserted from below.
5 are screwed together to attach this reference plate 16 to the mounting base 11. At this time, the reference plate 16 is rotatable in the horizontal direction with respect to the mounting base 11. Furthermore, the reference plate 16 has mounting holes 1 on both sides of the mounting hole 18.
Three measurement holes 19a, 19b, and 19c for inserting anchor bolts are formed at symmetrical positions with respect to point 8, and a level 20 for measuring the front, rear, left, and right levels is provided at one end of the reference plate 16 on its top surface. It is fixed.

21 is a level bar, and this level bar 21 is
Formed into a roughly H-shaped cross section with guide grooves 2 on both sides.
2, 22, and a pair of hollow pipe-shaped level scales 2 inserted into the guide grooves 22, 22 so as to be slidable in the vertical direction.
4, 24, and a threaded rod 25 similarly fixed to the lower end of the level rod main body 23. On the surfaces of the level scales 24, 24, graduations 25 are displayed in units of 1 mm. Also, this level scale 24
Holder screw 26 that can be fixed at any height position
is attached to its lower end. A male screw 27 is formed at the lower end of the threaded rod 25 attached to the lower end of the level rod main body 23.
is screwed into the female screw 13 of the mounting base 11 from above. Note that this female screw 13 still leaves some room below it even when the male screw 27 is screwed in.

Next, a leveling method using the jig 28 will be explained. First, as mentioned above, the reference plate 16
With the level bar 21 attached to the mounting base 11, as shown in FIGS. 2 and 3, the mounting base 1
The lower half of the female screw part 13 of No. 1 is connected to the anchor bolt 29.
screw onto the upper end of the anchor bolt 29 and install it onto the anchor bolt 29. As shown in FIG.
Attach multiple pieces at appropriate intervals to 9, 29... At that time, when attaching to an anchor bolt 29 that is lower than other parts such as the partition foundation 30a, slide the level scale 24 upward by the height l of its lower part, so that it is the same as the other anchor bolts 29. Adjust so that you can measure at the scale position. Then, with it installed in this way, scale 2 of the level scale 24 from one point at level 31.
5, and if it is lower than the standard, install the mounting base 11.
The height of the reference plate 16 is adjusted by making the depth of screwing into the anchor bolt 29 shallower, and conversely screwing it deeper if it is too high, and thereby the height of each reference plate 16, 16 is determined. Adjust so that the height is at the top level.

After adjusting the heights of the reference plates 16, 16 in this way, the ruler plates 32, 32 are
is brought into contact with the lower surface of both ends of the abutment edge 17 of the reference plate 16 that protrudes outward from the side surface of the foundation 30, thereby causing the upper end of the ruler plate 32 to match the top level. , In this state, each of these ruler plates 32, 32...
Fix... After that, this ruler board 32, 32
The top mortar is poured into the left and right formworks, and the left and right sides are leveled so that the top surface of the top mortar matches the top surface of the ruler plate 32. At this time, the reference plate 16 is designed to be able to move slightly up and down on both the left and right ends with respect to the installation base 11, and while looking at the level 20, the reference plate 16 is held horizontally. ruler board 3
2 and 32 are brought into contact. Note that a self-leveling material or the like may be used instead of the top mortar.

FIG. 6 shows how to use the anchor bolt measurement holes 19a, 19b, and 19c formed in the reference member 16. 19
b, 19c, 19c are formed to correspond to the spacing between the anchor bolts 29, 29 protruding on the foundation 30, and therefore, for example, the pair of measurement holes 19a, 19a are connected to the corresponding anchor bolts. 29, 29 and check whether it matches the anchor bolts 29, 29.
It is possible to measure whether the 9 intervals are taken accurately. In addition, the line L connecting the centers of these anchor bolts 29, 29 is the reference line N of the building.
However, both edges of the reference plate 16 are formed to match this reference line N, and therefore, one edge of the reference plate 16 is located at this reference line N. The position of the anchor bolt 29 can be measured by checking whether or not the anchor bolt 29 is fixed.

Effects of the invention As described above, according to this invention, by attaching the mounting base to the anchor bolt and adjusting its height while watching the level rod, it is possible to accurately level the top. , simply by touching the ruler plate to the reference member that has been leveled in this way, this ruler plate can be installed at an accurate position, and therefore, it can be done by aligning it with the marking line as in the conventional method. The effect is that errors are less likely to occur compared to the case where the level is determined with high accuracy. Then, by using the ruler board that has been accurately installed in this way as a formwork and pouring leveling material such as mortar into it, and leveling the top using the top edge of the ruler board as a reference, the top edge will be accurately formed over the entire length of the foundation. It has the effect of raising the level.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway exploded perspective view showing the jig of this invention, Fig. 2 is a perspective view showing the method of installing the jig of this invention, and Fig. 3 is a schematic diagram showing how the jig is installed. 4 is a perspective view of a part of the foundation showing how the jig is installed, FIG. 5 is a longitudinal sectional view of the main part showing how to install the ruler plate, and FIG. A plan view showing a method of measuring the position of an anchor bolt using a jig, Fig. 7 is a perspective view of main parts showing a conventional leveling method, and Fig. 8 shows a top mortar with a ruler plate installed. FIG. 2 is a perspective view of a main part showing a state in the middle of pouring. 11...Mounting stand, 16...Reference plate, 2
0...Level, 21...Level bar, 23...Level bar body, 24...Level scale, 25...Graduation, 28...Jig, 29...Anchor bolt, 3
0...Basic.

Claims (1)

[Scope of utility model registration request] A mounting base that is screwed into the upper end of an anchor bolt protruding from the foundation and whose height is adjusted by changing the screwing depth; A reference member is projected upward from the mounting base, and the upper end of a ruler plate, which will become a formwork for pouring mortar or other top-level material, is brought into contact with the lower surface of the projection. A jig for leveling the top of the foundation, featuring a level rod for visual level checking and a cage.