JPH09329403A - Inspection jig of circular rod for seismic isolation steel damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily set a measurement body in the exactly horizontal condition, and to easily perform the inspection of each part, by comprising a positioning plate fixed on a surface plate, and a clamp swivelably attached. SOLUTION: A positioning plate 20 is fixed on a surface plate 12 for inspection by a bolt 21, and a clamp 23 swivable on a pressure bolt 22, is attached near the positioning plate 20. A circular rod 3 is positioned by the positioning plate 20, and is set in the exactly horizontal condition by the clamp 23 and the bolt 22, and then the positions perpendicular to the axis, of the both ends, an interval in the vertical direction, and the parallelism are inspected by using a square 28 and a height gage 29. After the inspection, the clamp 23 is lifted by an additional spring when the bolt 22 is loosened, and the clamp 23 is swiveled to an evacuation position. Then the displacement in the circumferential direction, of the both ends of the circular rod 3 is inspected by an inspection jig having a positioning base part 27a and a build-up limit gage part 27b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple inspection jig for inspecting the finished state of a circular rod for seismic isolation steel damper.

[0002]

2. Description of the Related Art In recent years, in order to prevent damage to a building or equipment inside the building due to an earthquake, a seismic isolation construction method capable of greatly reducing the rolling of the earthquake has been attracting attention. As one of the above seismic isolation construction methods, a seismic isolation steel damper 1 as shown in FIG. 4 has been put into practical use.

In this seismic isolation steel damper 1, as shown in FIG. 5, a shaft portion 2c of a steel rod 2 is spirally wound once to form a flat one end portion 2a and another end portion 2b in the axial direction. Circular rods 3 are used which are opposed to each other in parallel at the same position with a certain interval. Then, the four circular rods 3 are arranged at 90 ° intervals so that the bent portions are outward, and the upper base plate 4A is fixed to the upper surface of each one end 2a with a bolt / nut 5, and each other end is Attach the lower base plate 4B to the bottom surface of the portion 2b with bolts and nuts 5.
The lower base plate 4B is fixed to the upper surface of the foundation concrete, and the upper base plate 4A is fixed to the lower surface of the building.

In the circular rod 3, for example, the shaft portion 2c of the steel rod 2 has a diameter D1 of 70 mm, a rolled and bent inner diameter D2 of 500 mm, and a height T between the end portions 2a and 2b is 2.
It is 50 mm and weighs 70 kg.

The circular rod 3 is usually a hot coiled product, and it is necessary to inspect the finished dimensions of each part after coiling.

[0006]

However, in the circular rod 3, since the one end 2a and the other end 2b face each other in the vertical direction and the shaft 2c has a spiral shape, the circular rod 3 is mounted on the inspection surface plate. When attempting to set, the other end 2b on the lower side and a part of the shaft 2c contact the top of the surface plate by tilting due to its own weight, and can only be set in a substantially horizontal state, so place it on the surface plate. There is a problem that it is difficult to carry out an accurate inspection using a gauge or the like. Further, since the weight is 70 kg in the above-exemplified type, it is difficult to set the shaft portion 2c in a horizontal state by lifting it, and even if the shaft portion 2c is lifted, it cannot be accurately set in a horizontal state. there were.

The present invention has been made to solve the above-mentioned problems, and the circular rod for seismic isolation steel damper can be set easily and quickly on the inspection surface plate in an accurate horizontal state, and at the same time, An object of the present invention is to provide a simple inspection jig that can easily inspect the finished state.

[0008]

In order to solve the above-mentioned problems, according to claim 1 of the present invention, the shaft portion of the steel rod is spirally wound once to form a flat one end portion and the other end portion. It is an inspection jig for inspecting the finished state of circular rods facing each other in parallel at the same position in the axial direction at regular intervals. A positioning plate that positions by positioning the inwardly projecting end and the tip of one flat end that is the lower side, and a clamp that presses the inner surface of the one end and presses the lower surface onto the surface plate. The positioning plate is mounted on the surface plate, and the clamp is mounted so as to be pivotable around the presser bolt so that it can be retracted laterally from above one end. When loosening the bolt for It is intended to provide an inspection jig of the circular rod for seismic isolation steel damper, characterized in that as lifted upward ring.

According to the first aspect of the present invention, the flat one side which is the lower side of the circular rod set on the inspection surface plate in a substantially horizontal state with a sleeper temporarily provided between the shaft portion and the surface plate With the inward protruding end and the tip of the end of the clamp fixed to the positioning plate, tighten the clamp holding bolt and press the inner surface of one end with the clamp to attach the lower surface to the surface plate. Pressing it on allows the circular rod to be set accurately and horizontally in a simple and quick manner. After the setting, the shaft portion is lifted up from the sleepers or the like, so the sleepers or the like may be removed or left as it is.

In this set state, using the right angle ruler, height gauge, etc. placed on the surface plate, the position of each end, the interval,
Accurate inspection of levelness etc. After the inspection, loosen the presser bolt, and the clamp will be lifted upward by the spring.Therefore, the clamp can be swung gently with your finger and retracted sideways from above one end. Other inspections that cannot be done by pressing one end with a clamp can be performed easily.

Before the inspection, the circular rod is hung by a hoisting jig locked by a hook of a crane or the like and set on the surface plate, or after the inspection, the circular rod is hoisted by a hoisting jig and the surface of the surface plate is suspended. If the clamp is retracted when it is carried out from above, the circular rod can be hung from directly above or can be hung just above.

According to a second aspect of the present invention, the shaft portion of the steel rod is spirally wound once, and the flat one end portion and the other end portion are parallel to each other at the same position in the axial direction at regular intervals. It is an inspection jig for inspecting the finished state of the circular rods facing each other, and it is fitted on one flat end that is the lower side of the circular rod set on the inspection surface plate in a substantially horizontal state. , A positioning base portion for positioning by abutting against the tip of this end portion, the inward protruding end and the outward protruding end,
The present invention provides an inspection jig for a circular rod for seismic isolation steel damper, which is characterized by a vertical limit rising from the positioning base and a rising limit gauge facing the tip of the other end on the upper side. is there.

According to a second aspect of the present invention, one of the flat ones, which is the lower side of the circular rod set on the inspection surface plate in a substantially horizontal state with sleepers or the like interposed between the shaft portion and the surface plate, is used. With the positioning base portion abutting against the tip of the end portion, the inward protruding end, and the outer protruding end, the rising limit gauge portion is opposed to the tip of the other upper end portion. This allows accurate inspection of the circumferential deviation between the tip of one end and the tip of the other end.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the first inspection jig 26 includes a flat end portion, which is the lower side of the circular rod 3, on the inspection surface plate 12, inside the other end portion 2b in the drawings. A positioning plate 20 in the shape of a right-angled ruler is fixed with bolts 21 for positioning by positioning the protruding end 2f and the tip 2h. The positioning plate 20 has the other end 2b.
It is slightly thinner than the thickness of.

Further, on the inspection surface plate 12, a flat plate-like clamp 23 which is close to the positioning plate 20 and can be horizontally swiveled between a clamp position A and a retracted position B around a pressing bolt 22. Is attached, and by tightening the presser foot bolt 22 at the clamp position A, the positioning plate 2
The other end 2b of the circular rod 3 positioned at 0
By pressing the inner surface 2i and pressing the lower surface 2e onto the surface plate 12, the circular rod 3 is set on the surface plate 12 in a horizontal state.

A spring 24 is fitted into the holding bolt 22 between the lower surface of the clamp 23 and the upper surface of the surface plate 12, and the holding bolt 22 is pushed by the spring 24.
When the clamp 23 is loosened, the clamp 23 is held upward by being held in the horizontal state. The clamp 23
A leg portion 23a is provided at the rear portion, and a clamp assist bolt 25 used when the other end portion 2b of the circular rod 3 is thin is provided at the front portion.

On the other hand, as shown in FIG. 3, the second inspection jig 2
A rectangular frame 7 is fitted to the other end 2b of the circular rod 3 from above or from the front, and is positioned by abutting against the tip 2h, the inner protruding end 2f, and the outer protruding end 2j of the other end 2b. Of the positioning base portion 27a, and a rising limit gauge portion 2 that rises at a right angle from the positioning base portion 27a and is bent in an L shape so as to avoid the one end portion 2a.
7b and.

When the inspection jigs 26 and 27 are constructed as described above, the cylar rod 3 lifted and moved by the lifting jig locked to the hook of the crane or the like is set on the surface plate 12. At this time, if the clamp 23 of the first inspection jig 26 is swung to the retracted position B, the inward projecting end 2f and the tip 2h of the other end 2b are positioned while suspending the circular rod 3 from directly above. It can be abutted against the plate 20 and positioned. At this time, if a sleeper or the like is provided between the shaft portion 2c of the circular rod 3 and the surface plate 12, the circular rod 3 can be set in a substantially horizontal state.

Thereafter, when the clamp 23 is turned to the clamp position A and the pressing bolt 22 is tightened, the inner surface 2i of the other end 2b is pressed by the clamp 23 and the lower surface 2 is pressed.
Since e is pressed onto the surface plate 12, the circular rod 3 can be set accurately in a horizontal state.
This set can be performed simply and quickly because the clamp 23 only clamps the other end 2b of the circular rod 3 with the positioning plate 20 positioned. When the circular rod 3 is set in a horizontal state, the shaft portion 2c is lifted from the sleepers or the like, so the sleepers or the like may be removed or left as it is.

Then, as shown in FIG.
Using the right-angled ruler 28 placed on the upper part 2, whether or not the positions of the one end portion 2a and the other end portion 2b of the circular rod 3 in the axis-perpendicular direction are within the tolerance range or the like. In addition, whether or not the vertical gap between the one end portion 2a and the other end portion 2b of the circular rod 3 is within the tolerance range by using the height gauge 29,
Check whether the parallelism is within the tolerance.

When the inspection is completed by using the first inspection jig 26, a sleeper or the like is provided between the shaft portion 2c of the circular rod 3 and the surface plate 12, and the holding bolts 22 are loosened, and then clamped. The clamp 23 is pivoted to the retracted position B because the spring 23 lifts the clamp 23 upward. At this time, since there are sleepers and the like, the circular rod 3 is set in a substantially horizontal state without being greatly inclined.

After that, as shown in FIG. 3B, the positioning base portion 27a of the second inspection jig 27 is connected to the tip 2h of the other end 2b of the circular rod 3, the inner protruding end 2f, and the outer protruding end 2j. Then, the rising limit gauge portion 27b is opposed to the tip 2h of the one end 2a. Then, it is inspected whether or not the deviation in the circumferential direction between the tip 2h of the other end 2b of the circular rod 3 and the tip 2h of the one end 2a is within the tolerance range.

After the inspection by the inspection jigs 26 and 27 is completed, the circular rod 3 is hoisted by a hoisting jig hooked on a hook of a crane or the like and is carried out from the surface plate 12 to the stock position or the like. Since the clamp 23 is rotated to the retracted position B, the circular rod 3 can be lifted right above and carried out.

[0024]

As is apparent from the above description, in the inspection jig according to the first aspect of the present invention, when one end of the circular rod is positioned by the positioning plate, it is pressed by the clamp. Since it becomes possible to set the circular rod on the surface plate accurately and horizontally in a simple and quick manner, use the right angle ruler or height gauge placed on the surface plate at each end in this set state. It becomes possible to accurately inspect the position, interval, horizontality, etc. of parts. Also,
When the clamp holding bolt is loosened after the inspection, the clamp is lifted upward by the spring, so that the clamp can be pivoted lightly with a finger or the like and retracted to the side.

Further, in the inspection jig according to the second aspect of the present invention, the standing limit gauge portion is positioned on the other end of the circular rod while the positioning base is fixed to the tip of one end of the circular rod and positioned. By making the tip end face with the tip end, it is possible to accurately inspect the deviation in the circumferential direction between the tip end at one end and the tip end at the other end.

[Brief description of drawings]

FIG. 1 is a first inspection jig of the present invention, (A) is a perspective view in which a circular rod is set, and (B) is a side view of an inspection procedure.

FIG. 2A is a plan view of a positioning plate, and FIG. 2B is a side sectional view of a clamp.

FIG. 3 is a second inspection jig, (A) is a perspective view set on a circular rod, and (B) is a side sectional view of an inspection procedure.

FIG. 4 is a seismic isolation steel damper, in which (A) is a perspective view and (B) is a side view.

FIG. 5 is a circular rod, (A) is a plan view, (B) is a side view, and (C) is a perspective view.

[Explanation of symbols]

 1 Seismic Isolation Steel Damper 2 Steel Bar 2a One End 2b Other End 2c Shaft 2e Lower Surface 2f Inner Projecting End 2h Tip 2i Inner Surface 2j Outer Projecting End 3 Circular Rod 20 Positioning Plate 22 Pressing Bolt 23 Clamp 24 Spring 26 26 First inspection jig 27 Second inspection jig 27a Positioning base portion 27b Rising limit gauge portion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsunefumi Mizushima 34, Muranishi, Konoike, Itami City, Hyogo Prefecture Tokaibane Industry Co., Ltd.

Claims (2)

[Claims] 1. The shaft portion of a steel rod is spirally wound and bent once,
An inspection jig for inspecting the finished state of a circular rod, in which one flat end and the other end are opposed to each other in parallel at the same position in the axial direction with a constant interval. Set in the horizontal position above. Positioning plate that positions by holding the inward projecting end and the tip of one flat end that is the lower side of the circular rod, and the lower surface by pressing the inner surface of the one end. Is equipped with a clamp for pressing on the surface plate, and the positioning plate is mounted on the surface plate, and the clamp can be retracted laterally from above one end centering on the holding bolt. An inspection jig for a circular rod for a seismic isolation steel damper, which is mounted so that it can be turned and is lifted upward by a spring when the pressing bolt is loosened. 2. A shaft of a steel rod is spirally wound and bent once,
An inspection jig for inspecting the finished state of a circular rod, in which one flat end and the other end are opposed to each other in parallel at the same position in the axial direction with a constant interval. Fit on one flat end that is the lower side of the circular rod set above in a substantially horizontal state,
A positioning base that positions the tip of the end, the inward protruding end, and the outward protruding end by positioning, and rises vertically from the positioning base and opposes the tip of the other upper end. A circular rod inspection jig for seismic isolation steel dampers, which is composed of a limit gauge section.