JPH1150676A - Jack base with inclination adjusting baseplate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembling work for concrete form having inclination by mounting a baseplate on the edge of a jack base inserted in the steel pipe end part of a steel pipe-made form support column, and fixing it at an arbitrary inclination angle. SOLUTION: A horizontal shaft 5 is fixed on the upper end of a jack screw 4 inserted in and connected to the steel pipe end of a steel pipe-made form support column and enabling height adjustment by a jack nut with a handle 3, and inserted in the through hole of a bearing plate 2 to swingably support a baseplate 1. A hinge pin 8 is inserted in a hollow shaft part 6 and the through hole of the bearing plate 2 fixed on the upper end of a hinge bolt 7 to screw a nut 9, and the rotatably supported hinge bolt 7 is inserted in the slot of a receiving fitting with a slot 10 to be fixed on the slot receiving fitting with the slot 10 so as to fix the inclination angle of the baseplate 1. Thus, the height and inclination angle of the baseplate 1 are arbitrarily adjusted and fixed, and a concrete form having inclination can be easily supported to be assembled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a jack base which is used by being inserted into a steel pipe end of a steel pipe form supporting column to support a concrete form at a construction site or the like.

[0002]

2. Description of the Related Art As shown in FIGS. 9 to 11, a conventionally used jack base has a jack screw 17 inserted and connected to an end of a steel pipe of a steel pipe form supporting column, and a jack screw 17 for adjusting a height. A jack nut 18 with a handle screwed to a jack screw 17 and a base plate 19 provided at the upper end of the jack screw 17 are shown in FIG. like,
A bearing plate 20 is provided on the base plate 19, and a free jack base in which the base plate 19 is swingably attached to the upper end portion of the jack screw 17 with a hinge rivet 21 is used, or in the case of a base plate fixed type jack base, As shown in FIG. 11, the wedge-shaped wooden block 22 adjusted to the inclination angle is placed on the base plate 19, and the nail 2
Those having fixed blocks such as 3 have been used.

[0003]

In the above-mentioned universal jack base, the base plate is swingable and can be adapted to various inclination angles. However, since the angle cannot be fixed, when the form member is mounted on the base plate. , It is dangerous to assemble concrete formwork that has to be unstable
There was a problem with work safety.

When a wedge-shaped wooden block adjusted to a gradient is fixed to a base plate of a fixed base plate type jack base with a nail, the assembling work of the mold can be stably performed. It is necessary to prepare various types of wooden blocks before work, and work is complicated and time-consuming because blocks with different angles are attached to the base plate according to the arrangement, and used blocks are diverted to other sites In many cases, it is disposable without any problem, and there is a problem that waste of natural resources and industrial waste are accompanied.

Accordingly, an object of the present invention is to be able to freely adapt to various inclination angles, to be able to fix at a desired inclination angle and to have excellent work safety, and to be able to repeatedly use the gradient adjustment. A jack base with a base plate is provided.

[0006]

In order to achieve the above object, according to the present invention, the base plate is swingable with respect to the jack screw and can be fixed at a predetermined angle so that the conventional jack base can be fixed. It is a solution to all problems.

That is, the present invention provides a jack screw inserted and connected to a steel pipe end of a steel pipe form supporting column, a jack nut with a handle screwed to the jack screw to adjust the height, and a jack screw. In the jack base consisting of the base plate provided at the upper end, the base plate is provided so as to be swingable with respect to the jack screw, and a metal fitting with a long hole through which a hinge bolt that is swingably hung from the base plate can be inserted. It features a jack base with a slope adjusting base plate, which is formed by projecting from a jack screw and screwing a pair of fixing nuts which can be fastened and fixed by sandwiching the receiving member from both sides with hinge bolts inserted into the long holes.

In order to provide the base plate so as to be swingable with respect to the jack screw, a bearing plate having a semicircularly cut-out shaft hole is provided on the back surface of the base plate, and the horizontal shaft at the upper end portion of the jack screw is provided. It is possible to adopt a configuration of being inserted through the shaft hole and attached. In addition, as a configuration in which the hinge bolt hangs from the base plate so as to swing freely, a through hole is provided in the bearing plate, and the hollow shaft portion of the hinge bolt having the hollow shaft portion at the upper end is aligned with the through hole, and the through hole and the through hole are formed. A configuration in which a hinge pin is inserted into the hollow shaft portion and a nut is screwed into the hinge pin end can be adopted.

[0009] In such a jack base, if the two fixing nuts are loosened, the base plate can swing at an arbitrary angle within the interval between the two fixing nuts, so that it is easy to support a sloped concrete formwork. Once the angle is adjusted, the base plate can be firmly fixed by tightening both fixing nuts, so that the safety of work can be ensured. Further, after the work is completed, it can be repeatedly used at another site.

If the shaft hole of the bearing plate provided on the back surface of the base plate is cut off in a semicircular shape, the base plate is directly received by the horizontal shaft at the upper end of the jack screw, and the strength and stability are improved. preferable.

[0011] When a substantially U-shaped base plate having side plates provided on opposite sides in a direction orthogonal to the swinging direction of the base plate is used, when a large beam material is placed on the base plate, The base plate can be adjusted and fixed according to the gradient while preventing it from escaping to the left and right, and the work safety is improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the jack base with a slope adjusting base plate of the present invention will be described below with reference to FIGS. As shown in the figure, bearing plates 2, 2 having shaft holes 2 a, 2 a cut out in a semicircular shape are provided on the back side of the base plate 1. On the other hand, a horizontal shaft 5 is provided at the upper end of a jack screw 4 which is inserted into and connected to the end of the steel tube of the steel tube form support column and whose height can be extended by a jack nut 3 with a handle. Is inserted into the shaft holes 2a, 2a, so that the base plate 1 is swingably supported at the upper end of the jack screw 4. In manufacturing, the bearing plates 2 and 2 are welded to the back surface of the base plate 1 with the horizontal shaft 5 inserted into the shaft holes 2a and 2a of the bearing plates 2 and 2.

The bearing plates 2, 2 are further provided with through holes 2b, 2b.
A hinge bolt 7 having a hollow shaft portion 6 at the upper end for communicating the through hole is screwed into a hinge pin 8 inserted into the through holes 2b, 2b and the hollow shaft portion 6 and an end of the hinge pin. The nut 9 is attached to the base plate 1 so as to hang down and swing freely.

The jack screw 4 has a slotted metal fitting 1.
0 is provided in a projecting manner, and the hinge bolt 7 is inserted into the elongated hole 11. The hinge bolt 7 has a pair of fixing nuts 12, 1 and
2 is screwed. Therefore, as shown in FIGS. 4 and 5, if the fixing nuts 12, 12 are loosened, the base plate 1 can swing at an arbitrary angle within the interval between the two fixing nuts, and the fixing nuts 12, By tightening 12, the inclined state is fixed.

FIGS. 7 and 8 show an example of use, in which a jack screw 4 is inserted and connected to a steel pipe of a steel pipe form supporting column 13, and a jack nut 3 with a handle is turned to thereby end the steel pipe. Adjust the height from to the base plate 1. Next, the base plate 1 is tilted until it matches the gradient of the concrete formwork 14, and the two fixing nuts 12, 12 sandwiching the slotted metal fitting 10 at a predetermined tilt position are tightened. It is fixed in a state, and a stable supporting state can be obtained. Normally, a jack base with a slope adjusting base plate is used by being inserted and connected to the upper part of the steel pipe of the steel pipe form supporting column 13, and the lower part of the steel pipe may be simply inserted and connected by a jack base with a base plate. As shown in the figure, when the lower part of the steel pipe is also an inclined surface, a stable supporting state can be obtained by using the jack base with the slope adjusting base plate of the present invention also in the lower part of the steel pipe.

In the above-described embodiment, the flat base plate 1 is used. However, as shown in FIG. 6, a substantially U-shaped side plate 15 is provided on the opposite side in the direction orthogonal to the swing direction of the base plate. When the base plate 16 forming a mold is used, there is an advantage that when a large beam material is placed on the base plate 16, the base plate can be adjusted and fixed according to the gradient while preventing it from escaping to the left and right and falling.

[0017]

As described above, the jack base with a slope adjusting base plate according to the present invention can not only safely support a sloped concrete formwork at a construction site, but also a structure having a sloped bottom surface. It can also be used effectively when supporting steel pipes and installing steel pipe scaffolding frames on slopes.After work is completed, it can be used repeatedly at other sites, making it possible to work easily in temporary work. It can significantly contribute to the improvement of safety, and can provide an optimal jack base for the assembling work of the formwork of a concrete structure that draws a complicated curve and the assembling work of the steel pipe formwork supporting pillar as of today. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a jack base with a slope adjusting base plate of the present invention;

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is an exploded perspective view of the jack base,

FIG. 4 is a front view when the base plate of the jack base is swingable.

FIG. 5 is a front view showing a state in which the base plate of the jack base is fixed in a predetermined inclined state.

FIG. 6 is a perspective view showing another example of the present invention;

FIG. 7 is a front view showing an example of using the jack base at a construction site;

FIG. 8 is a side view of the same,

FIG. 9 is a front view showing an example of a conventionally used universal jack base.

FIG. 10 is a side view of the universal jack base.

FIG. 11 is a front view showing a usage example of a conventionally used base plate fixed type jack base.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base plate 2 ... Bearing plate 2a ... Shaft hole 2b ... Through-hole 3 ... Jack nut with a handle 4 .... Jack screw
DESCRIPTION OF SYMBOLS 5 ... Horizontal axis 6 ... Hollow shaft part 7 ... Hinge bolt 8 ... Hinge pin 9 ... Nut 10 ... Metal fitting with a long hole 11 ... Long hole 12 ... Fixed nut 13 ... Steel pipe form support column 14 ... Concrete form
15: Side plate 16: Base plate

Claims (3)

[Claims] 1. A jack screw inserted into and connected to an end of a steel pipe frame supporting column, a jack nut with a handle screwed to the jack screw to adjust the height, and a jack screw provided at an upper end of the jack screw. In the jack base consisting of the base plate and the base plate, the base plate is provided so as to be swingable with respect to the jack screw, and a socket with a long hole through which the hinge bolt that is swingably hung from the base plate can be inserted protrudes from the jack screw. A jack base with a slope adjustment base plate, which is formed by screwing a pair of fixing nuts that can be fastened and fixed by sandwiching the receiving bracket from both sides with hinge bolts inserted into the long holes. 2. A jack screw inserted into and connected to an end of a steel pipe form supporting column, a jack nut with a handle screwed to the jack screw to adjust the height, and an upper end of the jack screw. In the jack base consisting of a base plate, a bearing plate with a semi-circular notched shaft hole and a through hole is provided on the back of the base plate, and the horizontal shaft at the upper end of the jack screw is inserted through the shaft hole At the upper end of the jack screw so as to swing freely, align the hollow shaft of the hinge bolt having a hollow shaft at the upper end with the through hole, insert a hinge pin, screw a nut, and hang from the base plate. A hinge bolt is attached in a swingable manner in a state, and the hinge bolt is inserted into a long hole of a long holed receiving member provided in a projecting manner from a jack screw, and a pair of fixing nuts is sandwiched between the long holed receiving member. Is screwed into the hinge bolt Jack base with slope adjustment base plate. 3. The jack base with a slope adjusting base plate according to claim 1, wherein the base plate has a substantially U-shaped base plate having side plates on opposite sides in a direction orthogonal to the swinging direction of the base plate.