JPH0593461A - Coupling device in temporary frame structure - Google Patents

Abstract

PURPOSE:To perform reliable intercoupling of a stay ad a beam during assembly of a temporary frame structure. CONSTITUTION:Stays 1 protruded from support metals 2 located in an up opening state at intervals of a given distance in the direction of length are erected at intervals of a specified distance in a longitudinal and a lateral direction and the adjoining states 1 and 1 are intercoupled through a beam 5 to assemble a temporary frame structure. In the temporary prefabricated structure, lock rod bodies 7 having a screw part 6 are protruded from the respective central parts of the end surfaces of the beam 5. The central part of the back of a rectangular lock piece 8 is integrally fixed to the tip of the lock rod body 7, and the lock piece 8 is engaged with a support metal 2 of the stay 1. Further, a fastening cylinder body 9 is forward and backward movably joined in a screwed-in state with the lock rod body 7, and by screwing-in of the fastening cylinder body 9, the outer end surface thereof is brought into pressure adhesion to the support metal 2. A protrusion 4 protruded from the support metal 2 is engaged with the lower part of the inner peripheral surface of an opening in the front end of the fastening cylinder body 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a connecting device for a temporary frame structure which is used for supporting a frame assembly such as a floor slab.

[0002]

2. Description of the Related Art Conventionally, as a temporary framework structure used for, for example, a temporary scaffolding for construction, a structure which can be framed by using a large number of columns and beam rods is widely known.
As a concrete structure of such a temporary framework structure, a large number of support posts having upwardly opened receiving metal fittings provided at regular intervals in the length direction and locking hooks bent downward at both ends are projected. It consists of a large number of beam rods that are installed,
The pillars are assembled by standing upright and rearward and rightward and rearward at predetermined intervals and engaging hooks at both ends of the beam rod between brackets of adjacent pillars.

Then, the locking hook is firmly crimped and fixed to the receiving metal fitting by driving the wedge body, or an eccentric lever is rotatably attached to the lower surfaces of both ends of the beam rod, and its outer peripheral surface is pressed against the outer surface of the receiving metal fitting. By doing so, the locking piece is fixed.

[0004]

However, according to the above structure, in order to strengthen the connection between the support column and the beam rod, when the locking hook is crimped to the receiving metal fitting by the driving of the wedge. The vibration is extremely dangerous because the wedge loosens due to vibration, the strong crimping of the locking hook and the receiving metal may be released, and the entire frame may wobble.

Further, according to the eccentric lever, the degree of tightening is set by the distance from the center axis of rotation of the outer peripheral tightening cam surface, so that the engaging hook is engaged at the intermediate height portion of the cam surface. There is a case where the receiving metal fitting is completely crimped, and there is a risk that the eccentric lever may unexpectedly rotate in the direction to release the crimping of the locking hook and the receiving metal fitting from that state, so it is possible to maintain the crimped state. This is not possible, and the same problem as in the case of fixing is caused by the above wedge.

Further, in any of the above-mentioned fixing means, when the locking hook and the receiving metal fitting are not sufficiently fixed, there is no means for preventing the locking hook from coming off, so that the beam rod comes off the prop and a serious accident occurs. It is a cause of occurrence.
It is an object of the present invention to provide a connecting device for a temporary framework structure that can completely eliminate such problems.

[0007]

In order to achieve the above object, the connecting device in the temporary framework structure of the present invention is integrally provided with receiving metal fittings which are opened upward at predetermined intervals in the length direction. A strut and a beam rod at both ends of which a locking piece that can be engaged with and disengaged from the receiving metal fitting of the strut is projected. In a temporary frame structure constructed by engaging both end locking pieces of a beam rod with a receiving metal fitting, the locking pieces are projected from both end surfaces of the beam rod at a predetermined distance and A screw portion is provided at both ends of the rod, and the tightening tubular body is screwed into the screw portion so as to be able to move forward and backward with respect to the locking piece.

In the coupling device having the above structure, the locking piece is fixed to the tip of a locking rod protruding from the center of both end surfaces of the beam rod, and the locking piece is attached to the locking rod. It is desirable to form the upper and lower left and right sides symmetrically, and to screw the fastening tube body to the locking rod body so that the fastening tube body can advance and retreat. Also, in the lower end of the opening of the fastening tube body at the center of the lower end of the bracket. It is preferable that a small projection that engages with the peripheral surface be provided in a protruding manner.

[0009]

[Operation] By fitting the locking pieces at both ends of the beam rod to the opposed receiving metal fittings of the column vertically erected in the front-rear and left-right directions, the column rods are connected and integrated by the beam rod. By forming the shape of the shape so that it is opposed to the top, bottom, left, and right such as a rectangular shape, it is possible to position the beam rod with respect to the bracket of the strut without having to orient it like a conventional hook. It can be engaged even with one-touch.

Next, when the tightening cylinder is screwed forward, the end surface of the tightening cylinder is pressed against the outer surface of the receiving metal fitting, and the locking piece is strongly pressed against the inner surface of the receiving metal fitting. With the locking pieces, the inner and outer surfaces of the receiving metal fitting are clamped, and the beam rod is firmly fixed to the column. Further, if a small protrusion that engages with the inner peripheral surface of the lower end of the opening of the tightening cylinder is provided in the center of the lower end of the receiving metal fitting, when the tightening cylinder presses against the receiving metal fitting, the projection will close. Even when the tightening force of the tightening cylinder is weak or the tightening cylinder is loosened by engaging with the inner peripheral surface of the lower end of the cylinder,
It is possible to reliably prevent the locking piece of the beam rod from coming out of the support bracket of the column.

Further, at the time of disassembling, if the tightening cylinder is screwed back, the fixing of the beam rod to the support is released. Then, when the beam rod is pulled up, the locking piece is disengaged from the bracket. The beam rod can be separated from the support.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings, in which 1 is a pillar made of a steel pipe having a constant length, and receiving brackets 2 are integrally fixed to the front, rear, left and right of the outer peripheral surface thereof.
These four-way brackets 2 are arranged at regular intervals (four positions in the figure) in the length direction of the column 1. The pair of brackets 2, 2 protruding in the front and rear sides and the pair of brackets 2, 2 protruding in the left and right sides are arranged with their positions vertically displaced by a small distance. However, they may be arranged on the same circumference.

These receiving brackets 2 are formed by bending a metal plate piece into a U-shape in a plane and forming a front plate portion 2a and both side plate portions 2b and 2b connected to the front plate portion 2a at a right angle. 2 side plate parts
The end surfaces of b and 2b are fixed to the support 1 by welding, and the front plate portion 2a is formed with a locking groove hole 3 by notching a portion that reaches an appropriate depth from the center of the upper end. Further, a receiving piece 2c bent at a right angle toward the support 1 is provided at the lower end of the front plate portion 2a. Further, a small-diameter disk-shaped small projection 4 is provided at the lower end of the center of the front plate 2a.

Reference numeral 5 denotes a beam rod made of a steel pipe having a constant length, which is shown in FIG.
As shown in Fig. 2, the end faces 5a, 5a are fixed to both the open ends to close the open ends.
At the central portion of 5a, a base end of a locking rod body 7 having a screw portion 6 formed on the outer peripheral surface is fixed by welding or the like. The diameter of the locking rod 7 is smaller than the lateral width of the locking groove hole 3 of the bracket 2, and the protruding tip of the locking rod 7 has a rectangular shape, a circular shape, or the like in the vertical and horizontal directions with respect to the center. The central portion of the symmetrical locking piece 8 is integrally fixed.

The thickness of the engaging piece 8 is smaller than the opening width of the receiving metal fitting 2 in the front-rear direction, that is, the width between the opposing surfaces of the support 1 and the receiving metal fitting 2, and the lateral width is the receiving metal fitting 2. It is formed to be slightly smaller than the dimension between the facing surfaces of the both side plate portions 2b, 2b, and has a shape that can be fitted into the receiving metal fitting 2 by dropping it.

Reference numeral 9 denotes the locking rod 7 at the intermediate portion of the inner peripheral surface thereof.
A tightening tubular body formed with a screw hole portion 9a screwed into the front and rear ends, and circular opening portions 9b and 9c communicating with the screw hole portion 9a and having a diameter larger than the screw hole portion 9a are formed. There is a rear opening
9c is fitted to the end of the beam rod 5 so as to be movable back and forth, and the diameter of the opening 9b on the front side is such that the projection 4 projecting from the lower end of the bracket 2 has a diameter of the opening 9b. It is formed in a size that engages with the lower inner peripheral surface.

Although the tightening cylinder 9 is screwed into the locking rod 7 so as to be able to move forward and backward, a screw portion is formed on the outer peripheral surface of the end portion of the beam rod 5, and the tightening is performed on this screw portion. The inner peripheral surface of the rear opening of the cylindrical body 9 may be screwed. Reference numeral 10 denotes a mounting piece having a brace mounting hole 11 projecting from the outer circumference of each end of the beam rod 5 located inside the tightening cylinder 9.

Numerals 12 and 13 are upper and lower auxiliary stanchions made of steel pipes connected to the upper and lower ends of the stanchion 1 in the extension direction.
As shown in FIG. 2, a part of its length is inserted into the upper and lower ends of the column 1, respectively, and the desired connection holes 14 are formed at appropriate intervals in the length direction. Inserting the pins 16 into the connecting holes 14 and the supporting holes 15 so that both ends of the supporting holes 15 project in the radial direction of the supporting column 1 by matching with the supporting holes 15 formed in the upper and lower ends of the supporting column 1. It is configured to be installed by.

Further, the upper auxiliary column 12 has an inner peripheral surface on which a screw rod 18 having a form supporting metal fitting 17 attached to the upper end is screwed so as to be able to move up and down, and the auxiliary column 13 on the lower side. A leg rod 20 made of a screw rod having a seat plate 19 fixed to its lower end is screwed onto its inner peripheral surface. Reference numeral 21 denotes a height adjusting nut body screwed to the screw rod 18 and the leg rod 20, respectively, and a turning handle 22 is attached thereto.

Reference numeral 23 denotes an intermediate frame member connected between the columns 1 and 1 as required, and has the same length as the beam rod 5 with the beam rod 5 as a lower beam as shown in FIGS. An upper beam 24 is provided side by side, and these upper and lower beams 5, 24 are integrated by two connecting rods 25, 25. A bracket 2 provided with a space between the upper and lower beams 5, 24 on a column 1, It is formed to be one to several times as large as the dimension between the two, and an engaging piece 28 having the same shape and size as the engaging piece 8 is integrally attached to the inner peripheral surface at both ends of the upper beam 24 at the tip. The attached screw rod 26 is screwed so that it can move back and forth.

The strut 1 and the beam rod 5 which are constructed as described above
In order to assemble the temporary framework structure with each member such as, etc., the auxiliary columns 12, 13 are connected to the upper and lower ends of the column 1 so as to have a height necessary to support the floor slab building formwork. Adjust it. A plurality of the columns 1, 1, ... Are erected at regular intervals in the front-rear, left-right direction, and the adjacent columns 1, 1 are separated by the beam rod 5 or, if necessary, an intermediate frame member.
An erection framework structure is configured by connecting using 23, and the formwork is held on the upper end formwork support metal fitting 17 of the upper auxiliary support column 12 of the support column 1 through an appropriate receiving girder or the like.

In the case of constructing such an erection frame structure, a method of connecting the support column 1 and the beam rod 5 will be described. A beam is provided between the receiving metal fittings 2 and 2 facing each other on the horizontal line of the adjacent support columns 1 and 1. If the locking rod 7 protruding from both ends of the rod 5 is inserted into the upper end of the opening of the locking groove hole 3 of the receiving metal fitting 2 from above, the tip locking piece 8 of the locking rod 7 is inserted. Is a bracket 2
It is inserted inside, and its lower end surface abuts on the receiving piece 2c of the receiving metal fitting 2.

At this time, since the locking piece 8 is formed in a shape protruding from the locking rod body 7 in the outer peripheral direction and having the same protruding length in the vertical and horizontal directions, the locking piece 8 with respect to the receiving metal fitting 2. It can be fitted by simply dropping the locking rod body 7 into the locking groove hole 3 without orienting it, and the lower end surface of the locking rod body 7 is placed on the receiving piece 2c of the receiving metal fitting 2 in a mounted state. In the received state, the height position of the beam rod 5 with respect to the column 1 is always constant. It should be noted that the locking rod 7 may be configured to abut and support the bottom surface of the locking piece 8 groove hole 3 before the locking piece 8 contacts the receiving piece 2c of the receiving metal fitting 2. Of course, also in this case, the height position of the beam rod 5 with respect to the column 1 is always constant.

In this way, after the locking piece 8 of the beam rod 5 is inserted and supported in the receiving metal fitting 2 of the column 1, the tightening cylinder 9 is screwed to make its outer end face the front plate of the receiving metal fitting 2. When the tightening cylinder 9 is rotated in a direction in which it is pressed against the outer surface of the portion 2a and the tightening cylinder 9 is further screwed from this state, the locking piece 8 is pulled and the catch 2
The front plate portion 2a of the receiving metal fitting 2 is firmly clamped by the tightening cylinder 9 and the locking piece 8 so that the front plate portion 2a of the receiving rod 2 and the pillar 1 are supported. And are connected and integrated.

The supporting brackets 2 facing each other between the columns 1 and 1,
When the beam rod 5 is connected to 2 by the above operation, the beam rod 5
There is a case where the locking piece 8 of can not be brought into contact with the inner surface of the bracket 2 of the support column 1, but the outer end surface of the tightening cylinder 9 is simply crimped to the front plate portion 2a of the bracket 2, The rod 5 can be firmly attached to the column 1, and therefore, even if the locking piece 8 is loosely fitted into the receiving metal fitting 2, no trouble occurs.

Further, the tightening cylinder 9 is screwed to move the receiving fitting 2
When gradually approaching the front plate portion 2a of the above, the small projection 4 projecting at the center of the lower end portion of the receiving metal fitting 2 becomes the front opening portion of the tightening tubular body 9.
The beam rod 5 enters the inside of the beam 9b and engages with the lower inner peripheral surface of the opening 9b to prevent the beam rod 5 from coming off.

In this way, the supporting brackets 2, 2 of the adjacent columns 1 and 1 facing each other are integrally connected to each other by the beam rod 5, and the brace attachment pieces 10 and 10 are connected to each other by a brace. Although the frame structure is assembled, the columns 1 and 1 may be connected and integrated by using the intermediate frame member 23 in which the beam rod 5 is a lower beam. That is, the locking pieces 8, 8 of the beam rod 5, which is the lower beam of the intermediate frame member 23, are fitted into the lower metal fittings 2, 2 of the columns 1, 1 and at the same time, both ends of the upper beam 24 are locked. Piece 2
8 and 28 are fitted into the upper receiving fittings 2 and 2, and on the beam rod 5 side, they are connected and integrated with the column 1 by the tightening cylinder 9 by the same operation as described above, and on the upper beam 24 side, The fastening screw rod 26 is rotated to draw the locking piece 28, and the locking piece 28 is connected to and integrated with the inner surface of the front plate portion 2a of the bracket 2 by pressure.

[0028]

As described above, according to the connecting device for the erection frame structure of the present invention, the support pillar integrally provided with the receiving metal fittings that are opened upward at predetermined intervals in the lengthwise direction is provided at both ends. A beam rod formed by projecting a locking piece that can be engaged with and disengaged from the bracket of the support, and the locking piece is projected from both end surfaces of the beam rod at a predetermined interval. Since a threaded portion is provided at both ends of the beam rod, and a fastening cylinder is screwed into the threaded portion so as to be able to advance and retreat with respect to the locking piece, it is erected in the front-rear and left-right directions. After fitting both end locking pieces of the beam rod into the opposing receiving metal fittings of the strut, and screwing the tightening tubular body, the outer end surface of the tightening tubular body is firmly crimped to the facing end surface of the receiving metal fitting. The pillar and the beam rod can be easily and reliably connected and integrated.

Further, at this time, by forming the engaging pieces in a vertically and horizontally opposed shape such as a rectangular shape,
The beam rod can be engaged with one-touch from any position of up, down, left, and right without having to orient the beam rod with respect to the support bracket of the strut, and the assembling work can be done efficiently, and the support bracket If a small projection that engages with the inner peripheral surface of the lower end of the opening of the tightening cylinder is provided at the center of the lower end of the, the projection is the lower end of the closing cylinder when the tightening cylinder presses against the receiving metal fitting. Even if the tightening force of the tightening cylinder is weak and the tightening cylinder is loosened by engaging with the inner peripheral surface, it is ensured that the locking piece of the beam rod does not come out from the support bracket of the column. It can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a connected state of a column and a beam rod,

FIG. 2 is a longitudinal side view of the same,

FIG. 3 is a front view of an erection frame structure,

FIG. 4 is a front view of an intermediate frame member,

FIG. 5 is a front view showing an assembled state of the support column and the intermediate frame member.

[Explanation of symbols]

 1 Prop 2 Receiving metal fitting 3 Locking groove hole 4 Small protrusion 5 Beam rod 7 Locking rod body 8 Locking piece 9 Tightening cylinder

Claims (3)

[Claims] 1. A support column integrally provided with receiving metal fittings that open upward at predetermined intervals in the length direction, and projecting projections at both ends that are engageable and disengageable with the receiving metal fittings of the support pillar. In a temporary frame structure that is assembled by locking both end locking pieces of the beam rod to the metal fittings of the columns that face each other between the columns that are erected at predetermined intervals in the front-rear and left-right directions, The locking piece is provided so as to project from both end surfaces of the beam rod at a predetermined distance, and screw portions are provided at both ends of the beam rod, and a tightening cylinder is attached to the screw portion with respect to the locking piece. A connecting device for a temporary framework structure, characterized in that it is screwed so as to move forward and backward. 2. The locking piece is fixed to the tip of a locking rod body projecting from the center of both end surfaces of the beam rod and having a screw portion on the outer peripheral surface, and the locking piece is engaged. 2. The connecting device for a temporary frame structure according to claim 1, wherein the connecting rod is formed in a vertically symmetrical shape with respect to the stop rod, and the fastening cylinder is screwed into the locking rod so as to be able to move forward and backward. 3. A projection provided at the center of the lower end of the metal fitting so as to engage with the inner peripheral surface of the lower end of the opening of the tightening cylinder.
A connecting device in the described temporary framework structure.