JP3177068B2 - A connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on a permanent steel pipe column - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, in a building construction, temporarily connecting and fixing another rectangular steel pipe column on a vertically installed permanent rectangular steel pipe column, and after completion of a predetermined work, Temporarily fixing the temporarily fixed steel pipe column on the permanent steel pipe column to be used in the repeated work of releasing the connected and fixed state one by one from the main steel column and lifting the temporarily fixed square steel tube column upward. The present invention relates to a connection fixing device for stopping.

[0002]

2. Description of the Related Art Another rectangular steel pipe column is temporarily connected and fixed on the main steel pipe column, and after completion of a predetermined operation, the temporarily connected rectangular steel pipe columns are connected one by one to the above-mentioned fixed connection state. As the building work of repeating the lifting and lifting upwards, the top floor is pre-constructed on the ground with a square steel pipe column, and this is raised using a jack-up device, and the steel pipe columns are connected for each floor The method of fixing and stacking was known.

That is, as shown in FIG. 8, for example, on a plurality of permanent steel pipe columns 31 which are located on the outer side standing and fixed on the first floor part, the outermost part is located on the outer side of the uppermost floor part 32 constructed in advance. The plurality of steel pipe columns 33 for climbing are temporarily connected and fixed respectively, and the top floor section 32 is raised by a predetermined height by a jack-up device 34 disposed on each of the plurality of steel pipe columns 33 for climbing. Then, the connected and fixed state of the climbing steel pipe columns 33 is released one by one from each of the permanent steel pipe columns 31, and the jack-up device 34 lifts up the steel pipe columns 31a for the hierarchy.
The steel pipe columns 31 are connected and fixed one by one on the main steel pipe columns 31, and the climbing steel pipe columns 33, which have been lifted once, are lowered onto the newly fixed main steel pipe columns 31a and temporarily connected and fixed again. By repeating the work, 1
Steel pipe columns were stacked and fixed for each floor.

[0004] When the climbing steel pipe column 33 is temporarily fixed on the main steel pipe column 31, FIGS.
1 was used. That is, two erection pieces 35 are respectively projected and welded and fixed to the outer surfaces on the four lower ends of the lower end of the steel pipe column 33 for climbing.
A plurality of bolt holes 36 are formed in each erection piece 35 at equal intervals, and
The erection piece 35 of the climbing steel pipe column 33 is also provided on the outer surface on the four upper ends of the permanent steel pipe column 31 for fixing the
Two erection pieces 37 each corresponding to
Are projected and welded and fixed, and a plurality of bolt holes 38 are also formed in the erection piece 37 at the same intervals as the bolt holes 36 of the erection piece 35 of the steel pipe column 33 for climbing. And when connecting and fixing both, the climbing steel pipe column 33 is provided on the main steel pipe column 31.
The erection pieces 3 located above and below the climbing steel pipe column 33 and the permanent steel pipe column 31 for temporary fixing
5 and 37 are clamped from both sides by a connecting plate 40 having a plurality of bolt holes 39 formed therein, a fixing bolt 41 is inserted through each of the bolt holes 36, 38 and 39, and a nut 42 is tightened and fixed. Was. In the figure, 35a is an erection piece 35.
When the connecting plate 40 is sandwiched between the erection pieces 35 by stoppers protruding from the outer ends of the erection pieces 35, the connecting plate 40 is prevented from shifting outward.

[0005]

Even when a climbing steel pipe column is temporarily fixed on the main steel pipe column, the erection pieces must be strong because the top floor is extremely heavy. In addition, since the number of fixing bolts is increased, there is a problem that the installation and separation work is extremely troublesome and the workability is extremely poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and a temporary fixing steel column is temporarily fixed on a main steel column by one-touch operation and is temporarily fixed on a main steel column which can be separated. It is an object of the present invention to provide a connection fixing device for temporarily fixing a steel pipe column.

[0007]

According to the present invention, a pressing member is fixed at the center of the lower inner surface of a temporary fixing steel pipe column made of a rectangular steel pipe, and an engaging member is provided via a pin penetrating an elongated hole. The engagement member is held by a member, and the engagement member has an inner upper tapered surface slidably in contact with an upper end portion of an upper enlarged portion of the pressing member, and an inner lower tapered surface slidably in contact with a tapered surface of a lower enlarged portion of the pressing member, and A locking projection is projected outward and a stopper piece is projected outwardly from the center, and a locking projection is projected from the inner periphery of the upper end of a permanent steel pipe column made of a square steel pipe. In addition, the above-mentioned problem has been solved by adopting a means of integrally projecting the mounting projection on the locking ridge.

[0008]

According to the present invention having the above construction, immediately before the temporarily fixed steel pipe column lifted by the jack-up device or the like is connected to the permanent steel pipe column, the two temporarily fixed steel pipe columns facing each other are connected. The lower portion of the engaging member is narrowed to reduce its width, and the lower portion of the engaging member does not come into contact with the locking ridge of the main steel column in this state. Descends.

The lowering of the engaging member is stopped by the stopper piece of the engaging member being mounted on the mounting projection of the main steel column, and the pressing member is lowered by the lowering of the temporarily fixing steel column. The lower part of the engaging member is expanded, and the locking projection of the engaging member is pressed against the lower surface of the locking ridge, so that the temporary fixing steel pipe column is connected and fixed on the permanent steel pipe column.

On the other hand, when the steel pipe column for temporary fixing is lifted by a jack-up device or the like, first, the pressing member rises, the lower portions of the two engaging members facing each other are narrowed, and the width thereof is reduced. As it is, it goes up without contacting the locking ridge of the main steel pipe column, and separates the temporary fixing steel column from the main steel column.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. Temporary fixing steel column made of a square steel tube temporarily fixed on a pre-established main steel column 1 made of a square steel tube A pair of support plates 3 project from the center of the inner peripheral side surface 2a toward the center point at the lower end of the pair 2 at the center of the inner peripheral side surface 2a. A side wall surface of a pressing member 4 for vertically moving an engaging member 10 described later is connected and fixed.

The pressing member 4 has an upper enlarged portion 6 having a vertical wall surface protruding outwardly on the outer peripheral side surface of the upper portion of the rectangular column 5, and an upper end 6a of the upper enlarged portion 6 is formed in the rectangular column 5. The lower bulged portion 8 is formed so as to protrude slightly upward from the upper surface of the rectangular column 5 and further has a tapered surface 7 which is inclined inward toward the lower end on the outer peripheral side of the lower portion of the rectangular column 5.

A pin 9 is fixed to each of the pair of support plates 3 to which the pressing member 4 is fixed, penetrating through the gap 3a, and the pin 9 is guided in the gap 3a by using the pin 9 as a guide. The engaging member 10 pushed up or pushed down by 4 is arranged so as to be movable up and down and to be able to open and close.

The engaging member 10 is formed of a rectangular steel plate 11 having a thickness capable of moving up and down in each of the gaps 3a, and an elongated hole through which the pin 9 is inserted from the center to the upper part of the steel plate 11. 12 and the steel plate 1
1 is bent inward to provide an inner upper tapered surface 13 on the inner edge and an outer upper tapered surface 14 on the outer edge, respectively, and a lower end of the steel plate 11 slightly above the center of the inner edge. An inner lower tapered surface 15 inclined inward over the portion is provided, and a cut surface 16 inclined outward is connected to a lower end of the inner lower tapered surface 15. And a rectangular locking protruding piece 19 having a vertical surface 18 and the steel plate 11.
Is formed by projecting a rectangular stopper piece 21 having a horizontal bottom surface 20 at the center of the outer surface.

The engaging member 10 having the above-described configuration is disposed by inserting the pin 9 into the elongated hole 12 in the space 3a between the four pairs of support plates 3.

On the other hand, on the inner peripheral side of the upper end portion of the permanent steel column 1 for temporarily connecting and fixing the steel column 2 for temporary fixing to the upper end, a locking projection 19 of the steel column 2 for temporary fixing is engaged. A locking ridge 22 serving also as a reinforcement for stopping is provided around, and a stopper piece 21 of the engaging member 10 is placed on the locking ridge 22. The mounting projections 24 provided with are provided integrally with each other. The mounting projection 24 serves as a backing plate for welding when another main steel pipe column is connected and fixed on the main steel pipe column 1.

Next, the operation of the embodiment of the present invention will be described. FIG. 1 is an exploded vertical sectional view of the apparatus of the present invention. Further, immediately before a steel pipe column 2 for temporary fixing lifted by a jack-up device, a crane or the like (not shown) is connected and fixed on a main steel pipe column 1. It is a longitudinal cross-sectional view also showing the state of FIG. In this state, the engaging member 10 descends due to its own weight, the pin 9 is locked to the upper end portion 12a of the elongated hole 12, and the upper end portion 6a of the upper expanding portion 6 of the pressing member 4 is
The lower portion of the engaging member 10 moves inward with the pin 9 as a fulcrum, and the cut surface 16 is formed at the lower end. The lower portions of the two engaging members 10 facing each other are closed and the width is reduced without the lower portions inside the members 10 coming into contact with each other.

FIG. 3 is a view showing a state in which the steel pipe column 2 for temporarily fixing the state shown in FIG.
FIG. 2 is a longitudinal sectional view showing a state in which the engaging member 10 of FIG. 1 is lowered into the upper part of the main steel pipe column 1, and the lower parts of two facing engaging members 10 shown in FIG. Then, the locking projections 19 at the lower part of each engagement member 10 are further lowered without contacting the locking projections 22 and the mounting projections 24 by lowering the width of the engagement members 10 in a reduced state. I do.

Then, as shown in FIG. 4, the steel pipe column 2 for temporary fixing is further lowered onto the main steel column 1, and the bottom surface 20 of the stopper piece 21 of each engaging member 10 is brought into contact with the main steel column 1.
Is placed in contact with the upper surface of the mounting projection 24, and the downward movement of the engaging member 10 is stopped.

Thereafter, when the temporary fixing steel pipe column 2 is further lowered onto the main steel pipe column 1, the pressing member 4 integrated with the temporary fixing steel pipe column 2 is lowered together with the pin 9 as shown in FIG. Go. At this time, the upper end 6 of the upper expanding portion 6 of the pressing member 4
a is detached from the inner upper tapered surface 13, and the tapered surface 7 of the lower enlarged portion 8 of the pressing member 4 is
The lower part of the engaging member 10 is gradually moved outward with the pin 9 as a fulcrum. Then, as each of the engagement members 10 expands outward, the stopper piece 21 also moves outward on the mounting projection 24.

Thereafter, when the steel pipe column 2 for temporary fixing is further lowered from the state shown in FIG. 5 onto the main steel pipe column 1, the pressing member 4 is further lowered together with the pin 9 as shown in FIG. The pressing member 4 slides on the inner lower tapered surface 15 of the engaging member 10 by the tapered surface 7 of the lower enlarged portion 8 and continues to move downward, further expanding the lower portion of the engaging member 10, and 19, the horizontal surface 17 abuts against the lower surface of the locking ridge 22, the vertical surface 18 abuts on the inner wall surface of the steel pipe column 1, and the pin 9 is engaged with the lower end portion 12b of the elongated hole 12. The piece 21 is also mounted further deeply on the mounting projection 24, and the temporary fixing steel pipe column 2 is superimposed and mounted on the main steel pipe column 1, and the two steel pipe columns 1 and 2 are firmly connected and fixed with one touch. Is done.

After the temporary fixing steel column 2 and the permanent steel column 1 are connected and fixed as described above, all the temporary fixing steel column 2 and the permanent steel column 1 at other positions are similarly connected. Then, the temporary fixing steel pipe column 2 is lifted using, for example, a jack-up device (not shown) to release the connection fixing state from the main steel pipe column 1, and a new permanent steel pipe is placed on the main steel column 1. The process of connecting and fixing the column 1 is started.

Next, the temporarily fixed steel pipe column 2 is replaced with the main steel column 1.
The case where the connection is lifted up to release the connected and fixed state and then separated is described. In the case of releasing the temporarily fixed steel pipe column 2 from the state shown in FIG. 6 by lifting it up with a jack-up device, for example, the operation is the reverse of the above. That is, when the steel pipe column 2 for temporary fixation is lifted, the pin 9 first rises together with the pressing member 4 as shown in FIG. 5, and the upper end portion 6 a of the upper enlarged portion 6 of the pressing member 4 tapers inside the upper portion of the engaging member 10. As the lower portion of the engaging member 10 gradually moves inward with the pin 9 as a fulcrum as the lower portion of the engaging member 10 abuts below the surface 13 and gradually moves upward, the two engaging members 10 The lower portion is narrowed to narrow the width, and the temporarily fixed steel pipe column 2 is lifted to lock the pin 9 on the upper end portion 12a of the elongated hole 12 as shown in FIG. When the upper end portion 6a of the upper expanding portion 6 comes into sliding contact with the upper portion of the inner upper tapered surface 13 of the engaging member 10, the engaging member 1
The lower part of O moves further inward, and the lower parts of the two engaging members 10 facing each other are narrowed and the width thereof is further reduced. In this state, when the steel pipe column 2 for temporary fixing further rises, the locking projection 19 of the engaging member 10 comes into contact with the locking ridge 22 and the mounting projection 24 of the permanent steel pipe column 1 as shown in FIG. As shown in FIG. 1, the temporarily fixed steel pipe column 2 can be completely separated from the permanent steel pipe column 1 by releasing the connection and fixing state with a single touch, without the need for this.

FIG. 7 is a cross-sectional view showing another embodiment of the apparatus of the present invention, and corresponds to that shown in FIG. That is, a pressing member 4 is fixed to the center of a pair of inner peripheral side surfaces 2a opposed to each other at a lower end portion of a temporary fixing steel pipe column 2 made of a square steel pipe. In the same manner as in the embodiment shown in FIG. 1, an upper expanding portion 6 is formed, and a lower expanding portion 8 having a tapered surface 7 inclined inward toward the lower end is formed on the lower surface on both sides of the pressing member 4.

Then, two sets of a pair of support plates 3 are fixed to face each other on the opposed inner peripheral side surface 2a to which the pressing member 4 is fixed so as to have an interval 3a with the pressing member 4 interposed therebetween. At the same time, a pin 9 is fixed to the pair of support plates 3 through the gap 3a, and is pushed up and down by the pressing member 4 in the gap 3a using the pin 9 as a guide. The engaging member 10 is disposed so as to be able to move up and down and to be able to open and close.

The engaging member 10 according to the embodiment shown in FIG.
While the engaging member 10 according to the embodiment shown in FIG. 2 is composed of four pieces, whereas the engaging member 10 of the embodiment shown in FIG. 2 is composed of two pieces, the engaging member 10 of FIG. Only the difference is that the operation and effect are exactly the same as those shown in FIG. 2. Therefore, the description of the operation and effect will be omitted.

[0027]

Since the present invention is as described above, the steel pipe column for temporary fixing is lowered from above by using a jack-up device, a crane or the like to the steel pipe column for temporary fixation, so that both steel pipe columns can be extremely easily and one-touch. Is connected and fixed, eliminating the hassle of mounting and fixing many bolts as in the past, and releasing the temporarily fixed steel pipe column once connected and fixed on the permanent steel pipe column to release its connected and fixed state Also, the temporary fixing steel pipe column is jacked up,
Just by lifting with a crane etc., the temporary fixing steel pipe column can be easily separated from the main steel pipe column with one touch, eliminating the trouble of removing the bolt once attached as before, and speeding up the work. There is a big advantage that the construction period can be shortened and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded longitudinal sectional view showing a connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on a steel pipe column of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a longitudinal sectional view showing an operating state of a connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on a steel pipe column of the present invention.

FIG. 4 is a longitudinal sectional view showing an operating state of a connecting and fixing device for temporarily stopping a steel pipe column for temporary fixing on the steel pipe column of the present invention.

FIG. 5 is a longitudinal sectional view showing an operating state of a connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on the steel pipe column of the present invention.

FIG. 6 is a longitudinal sectional view showing a state where the temporary fixing steel pipe column is connected and fixed on the permanent steel pipe column by a connecting and fixing device for temporarily fixing the temporary fixing steel column on the present steel column.

FIG. 7 is a cross-sectional view showing another embodiment of a connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on the steel pipe column of the present invention.

FIG. 8 is a schematic view of a conventional construction method using a connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on a permanent steel pipe column.

FIG. 9 is an enlarged perspective view of a connection fixing portion for temporarily fixing a temporary fixing steel pipe column on a permanent steel pipe column in a conventional construction method.

FIG. 10 is an enlarged sectional view taken along line BB of FIG. 9;

FIG. 11 is an enlarged sectional view taken along the line CC of FIG. 9;

[Explanation of symbols]

1 steel pipe column, 2 steel pipe column for temporary fixing, 2a inner peripheral side surface, 3 support plate, 3a interval portion, 4 pressing member, 5 rectangular column, 6 upper enlarged portion, 6a upper end portion, 7 tapered surface, 8 lower portion Enlarged part, 9 pin, 10 engaging member, 11 steel plate, 12 long hole,
13 inner upper taper surface, 15 inner lower taper surface, 16 cut surface, 19 locking projection, 21
Stopper pieces, 22 locking ridges, 24 mounting projections.

Claims (3)

(57) [Claims] 1. A pressing member is fixed at the center of the lower inner surface of a temporary fixing steel pipe column made of a rectangular steel pipe, and an engaging member is held by the pressing member via a pin penetrating an elongated hole.
The engaging member has an inner upper tapered surface that slides on the upper end of the upper enlarged portion of the pressing member, and an inner lower tapered surface that slides on the tapered surface of the lower enlarged portion of the pressing member, and is locked outward at the lower end. Along with projecting the protruding piece, a stopper piece is protrudingly formed outside the central part, and furthermore, a locking protruding piece is protruded on the inner peripheral side of the upper end of the permanent steel pipe column made of a square steel pipe,
A connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on a permanent steel pipe column, wherein a mounting projection is integrally provided on the locking ridge. 2. A pair of support plates projecting from a center of an inner peripheral side surface of a lower end portion of a temporarily fixed steel pipe column made of a rectangular steel pipe, and a pair of support plates are respectively protruded therefrom. At the tip of each of the support plates, a pressing member formed by circumferentially forming a lower enlarged portion having a tapered surface inclined inward toward the lower end on the outer peripheral side of the lower portion of the rectangular column at the lower end is provided. An engaging member is connected and fixed, and is disposed in each of the space portions so as to be vertically movable via a pin penetrating through each pair of support plates, and is capable of being opened and closed by the pressing member. The member is provided with a rectangular steel plate having a long hole through which the pin is inserted from the center to the upper part thereof, and the upper end of the steel plate is bent inward so that the upper edge of the pressing member is formed at the inner edge. An inner upper tapered surface that is in sliding contact with the upper end of the portion, An inwardly tapered inwardly downward tapered surface that slides on the tapered surface of the pressing member is provided from the center to the lower end of the inner edge of the plate, and a cutout surface that is outwardly sloped is connected to the lower end of the inwardly tapered surface. The steel plate is further formed by projecting a rectangular locking projection piece at a lower portion of the outer surface of the steel sheet and projecting a square stopper piece at the center of the outer surface of the steel sheet. A locking ridge for locking the locking piece is provided around the inner peripheral side of the upper end of the main steel column made of a square steel pipe for connecting and fixing the steel pipe column, and the stopper is provided on the locking ridge. A connecting and fixing device for temporarily fixing a steel pipe column for temporary fixing on a permanent steel pipe column, wherein a mounting projection for mounting a piece is integrally provided around the main body. 3. An upper enlarged portion protrudes from both sides of an upper portion of a rectangular column at the center of a pair of inner peripheral side surfaces of a pair of temporary fixing steel tube columns formed of a rectangular steel tube and opposed to each other. A pressing member formed by projecting a lower enlarged portion having a tapered surface inclined inward toward the lower end on both sides of the lower part of the body is fixed, and the opposed inner peripheral side surfaces to which the pressing member is fixed are fixed. A pair of support plates are fixed to face each other with a spacing portion sandwiching the pressing member, and the engagement member can be moved up and down in each of the spacing portions via a pin penetrating the pair of support plates. The engaging member is provided so as to be able to be opened and closed by the pressing member, and the engaging member is provided with a rectangular steel plate having an elongated hole through which the pin is inserted from a central portion to an upper portion thereof, and The upper end of the pressing member is bent inward at the inner edge, An inner upper tapered surface that slides on the upper end portion, and an inwardly tapered inner lower taper surface that slides in contact with the tapered surface of the pressing member from the central portion to the lower end portion of the inner edge of the steel plate is provided. A cut surface inclined outward is continuously provided at the lower end of the tapered surface, and a rectangular locking projection is further provided at a lower portion of the outer surface of the steel plate. A locking ridge for locking the locking projection is formed on an inner peripheral side of an upper end portion of a permanent steel pipe column formed of a square steel tube for connecting and fixing the steel pipe column for temporary fixing, which is formed by projecting a stopper piece. A connection for temporarily fixing a steel pipe column for temporary fixing on a permanent steel pipe column, wherein a mounting projection for mounting the stopper piece is integrally provided around the locking ridge. Fixing device.