JP2928747B2 - Connection structure of brace for shoring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a support brace for connecting a brace obliquely between horizontal pipes or vertical pipes in a construction support.

[0002]

2. Description of the Related Art As a conventional connecting structure of a brace for a shoring, a structure as shown in FIG. 7 is known. In this conventional connection structure, a mounting bracket 32 having a pair of mounting pieces 32a is welded and fixed to an end of a brace 31, and a horizontal pipe 33 or a vertical pipe of a support is interposed between the two mounting pieces 32a. Has become. Mounting bracket 3
A support hole 34 is formed in each of the two mounting pieces 32a, and this support hole 34 is made to match the insertion hole 35 of the horizontal pipe 33 or the vertical pipe. A bolt 36 is inserted into both support holes 34 through an insertion hole 35, and a nut 38 is screwed into a tip of the bolt 36 through a washer 37.

[0003]

However, in this conventional connection structure, since the bolt 36, the washer 37 and the nut 38 are formed independently of the mounting bracket 32 at the end of the brace 31, these components are provided. There was a problem that management and transportation to the work site became complicated.

Further, in this conventional connection structure, it is necessary to insert a bolt 36 into the mounting bracket 32 and screw a nut 38 to the bolt 36 via a washer 37 at the work site. There was a problem that work was troublesome and time-consuming.

[0005] The present invention has been made by paying attention to such problems existing in the prior art. The purpose of the invention is to provide a connection structure of a brace for a shoring work, which can easily perform component management and transportation to a work site, and can easily and quickly connect a brace at a work site. Is to do.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a connecting structure of a brace for a shoring, wherein a horizontal pipe or a vertical pipe of a shoring is provided at an end of the brace. A mounting bracket having a pair of mounting pieces that can be interposed is fixed, and a connecting pin that can be inserted into an insertion hole of a horizontal pipe or a vertical pipe is movably and rotatably supported between the mounting pieces of the mounting metal. A concave groove extending in the axial direction is formed on the outer periphery of the connecting pin, and a retaining portion for retaining is formed at the tip of the concave groove, and the outer periphery of the connecting pin is communicated with the base end of the concave groove. To form an engaging groove extending in the circumferential direction,
One of the mounting pieces of the mounting bracket is provided with an engagement protrusion which can be engaged with the concave groove and the engagement groove.

According to a second aspect of the present invention, in the connecting structure of the brace for support according to the first aspect, a bent portion extending in a direction different from a position where the concave groove is formed at a base end of the connecting pin. With the connecting pin being inserted through the insertion hole of the horizontal pipe or the vertical pipe, the bent portion is rotated by its own weight, and the engagement position of the engagement projection is changed from the base end of the concave groove to the engagement groove. It is designed to be relatively moved inside.

According to a third aspect of the present invention, in the connecting structure of the support brace according to the first aspect, the concave groove of the connecting pin is formed by pressing, and the engaging groove is formed by cutting. It is.

Therefore, in the connecting structure of the brace for support according to the first aspect, when the connecting pin is pulled out to the base end side, the engagement between the engaging projection of the mounting bracket and the locking portion for preventing the connecting pin from coming off is provided. In some cases, the connecting pin is retained and held against the mounting bracket. For this reason, there is no possibility that the connecting pin is separated from the mounting bracket at the end of the brace, and the parts can be easily managed and transported to the work site.

When the brace is connected obliquely between the horizontal pipe or the vertical pipe of the support at the work site, the horizontal pipe or the vertical pipe is interposed between both mounting pieces of the mounting bracket, and the pipe is inserted. Is made to face the connecting pin.
In this state, when the connection pin is inserted through the insertion hole, the engagement position of the engagement protrusion is relatively moved from the distal end of the concave groove to the proximal end side.
Thereafter, when the connecting pin is rotated, the engaging position of the engaging projection is relatively moved from the base end of the concave groove into the engaging groove, and the connecting pin is locked and held at the insertion position. Then, by inserting the connecting pin, the brace is connected to the horizontal pipe or the vertical pipe of the shoring via the mounting bracket. For this reason,
The brace connection operation can be performed easily and in a short time.

Further, in the connecting structure of the brace for support according to the second aspect, only the connecting pin is inserted into the insertion hole of the horizontal pipe or the vertical pipe, and the connecting pin is bent by the own weight of the bent portion. The part is turned downward. As a result, the engagement position of the engagement protrusion is automatically moved relative to the engagement groove from the base end of the concave groove, and the connection pin is locked and held at the insertion position. Therefore, the operation of connecting the braces can be performed more easily and in a shorter time. Further, it is possible to easily confirm whether or not the connecting pin is securely locked and held at the insertion position from the state where the bent portion is directed downward.

Further, in the connecting structure of the brace for support according to the third aspect, the concave groove of the connecting pin is formed by pressing, and the engaging groove is formed by cutting. Therefore, the processing of the connecting pin can be efficiently performed in a short time.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described.
This will be described with reference to FIGS. As shown in FIG. 2, the plurality of vertical pipes 11 in the shoring work are erected at predetermined intervals, and four brackets 12 are fixed to a plurality of locations on the outer periphery thereof. The plurality of horizontal pipes 13 are connected between adjacent vertical pipes 11 by fitting wedge-shaped members 15 from the connection fittings 14 to the brackets 12 with the connection fittings 14 at both ends corresponding to the brackets 12. . Both ends of the pipe-shaped brace 16 are connected to the adjacent horizontal pipes 13 by a connection structure described later, and are disposed obliquely between the two horizontal pipes 13.

Next, the connection structure of the brace 16 will be described. As shown in FIGS.
Is provided with a pair of mounting pieces 17a which are welded and fixed to both ends of the brace 16 and through which the horizontal pipe 13 can be interposed. Support hole 1
8 is formed on each mounting piece 17a, and a support boss 19 is welded and fixed to the outer surface of one mounting piece 17a so as to match with these support holes 18. Insertion hole 20 is horizontal pipe 1
3, when the horizontal pipe 13 is interposed between the mounting pieces 17a of the mounting bracket 17, the insertion holes 20
It is arranged on the same axis as the support hole 18 of 7a.

A through hole 21 is formed at an intermediate portion of the mounting bracket 17, and the inside of the brace 16 is opened outward on both sides through the through hole 21. Then, in a state where the mounting brackets 17 are welded and fixed to both ends of the brace 16, when they are galvanized, the molten zinc that has entered the inside of the brace 16 is discharged to the outside through the through hole 20. ing.

The connecting pin 22 is supported by the support boss 19 and the two support holes 18 of the mounting bracket 17 so as to be movable and rotatable. The concave groove 23 is formed on the outer periphery of the connecting pin 22 by press working so as to extend in the axial direction, and a retaining portion 24 for retaining is formed at the distal end edge. The annular engagement groove 25 is formed on the outer periphery of the connection pin 22 by cutting so as to extend in the circumferential direction, and communicates with the base edge of the concave groove 23. The bent portion 26 also serving as the operating portion is formed at the base end of the connecting pin 22 by press working, and extends in a direction different from the position where the concave groove 23 is formed (in this embodiment, a direction separated by 90 degrees).

An engagement screw 27 as an engagement projection is screwed into the support boss 19, and its tip protrudes into the support boss 19 so that it can engage with the concave groove 23 and the engagement groove 25 of the connecting pin 22. Yes, it is. As shown in FIG. 6, when the engaging screw 27 is engaged with the concave groove 23 of the connecting pin 22, the bent portion 26 of the connecting pin 22 is inclined at a predetermined angle from the hanging position P1 at an inclined position P2. Are located in As shown in FIGS. 3 and 4, the engagement screw 27 is connected to the connection pin 22.
, The connecting pin 22 is rotated by the weight of the bent portion 26, and the bent portion 26 is moved from the inclined position P2 to the hanging position P1.

Next, the operation of the connection structure of the brace for supporting work constructed as described above will be described. In this brace connection structure, as shown in FIG. 5, when the connection pin 22 is pulled out to the proximal end side, the engagement screw 27
Engages with the retaining portion 24 for retaining on the connecting pin 22,
The connecting pin 22 is retained by the mounting bracket 17 so as not to come off.

In the case where the brace 16 is connected obliquely between the horizontal pipes 13 of the support at the work site, the horizontal pipe 13 is connected between the two mounting pieces 17a of the mounting bracket 17, as shown in FIG. It is inserted, and the insertion hole 20 of the horizontal pipe 13 is opposed to the connection pin 22. In this state, the connecting pin 22
Is inserted into the insertion hole 20 of the horizontal pipe 13, the engagement screw 2
7 is relatively moved from the distal end side to the proximal end side while engaging with the concave groove 23.

Thereafter, when the engaging screw 27 corresponds to the engaging groove 25 of the connecting pin 22, the connecting pin 22 is rotated by its own weight, as shown in FIGS. The part 26 is moved and arranged from the inclined position P2 to the hanging position P1. Thereby, the engagement position of the engagement screw 27 is relatively moved from the base end of the concave groove 23 into the engagement groove 25, and the connection pin 22
Is locked and held at the insertion position.

Then, with the connecting pins 22 inserted, the brace 16 is connected and held to the horizontal pipe 13 of the support via the mounting bracket 17. On the other hand, when the connection of the brace 16 to the horizontal pipe 13 is released, the bent portion 26 of the connection pin 22 is moved to the hanging position P in substantially the reverse order of the connection.
When rotated from 1 to the inclined position P <b> 2, the engagement screw 27 is arranged corresponding to the base end of the groove 23. Then, the connecting pin 22
Is pulled out to the base end side, the engagement screw 27 is relatively moved from the base end side to the tip end side while engaging with the concave groove 23, and as shown in FIG.
Is pulled out from the insertion hole 20. Accordingly, in this state, the mounting bracket 17 at the end of the brace 16 can be easily removed from the horizontal pipe 13.

As described above, this embodiment has the following advantages. (1) The connecting pins 22 are attached to the mounting brackets 17 at both ends of the brace 16.
There is no risk of separation from the parts, and the parts can be easily managed and transported to the work site. (2) Both ends of the brace 16 can be easily and quickly connected to the horizontal pipe 13 by a simple operation of merely inserting and moving the connecting pin 22 in the axial direction. By operating in the reverse order, the brace 16 can be easily removed from the horizontal pipe 13. (3) In the connection structure of the support brace, the concave groove 23 and the bent portion 26 of the connecting pin 22 are formed by pressing, and the engaging groove 25 of the connecting pin 22 is formed by cutting. I have. For this reason, the processing of each part of the connection pin 22 can be performed efficiently and in a short time according to the shape and the like of those parts. (4) Based on the state in which the bent portion 26 faces downward, it can be easily confirmed whether or not the connection pin 22 is securely locked and held at the insertion position.

The present invention can be embodied with the following modifications. (A) The engaging groove 25 is connected to the connecting pin 22 as in the above embodiment.
Is formed only at a predetermined angle in the circumferential direction from the communication portion with the concave groove 23 without being formed on the entire circumference of the groove. (B) The support boss 1 is used instead of the engagement screw 27 of the above embodiment.
9. An engaging pin is fitted on the peripheral wall of No. 9 to form an engaging projection. (C) The bent portion 26 is formed on the connecting pin 22 as in the above-described embodiment.
, The connecting pin 22 is rotated at the insertion position to engage the engaging screw 27 with the engaging groove 25. (D) The brace 16 is arranged so as to be connected obliquely between the adjacent vertical pipes 11. (E) The brace 16 is arranged so as to be connected obliquely between the adjacent horizontal pipe 13 and vertical pipe 11.

Further, the technical idea grasped from the embodiment will be described below. (1) The connecting structure of a support brace according to claim 1, wherein the engaging groove is formed over the entire circumference so as to extend in the circumferential direction on the outer circumference of the connecting pin. With this configuration, even if the mounting angle of the brace with respect to the horizontal pipe or the vertical pipe changes, the connecting pin can be easily mounted. (2) The connecting structure of a brace for support according to claim 1, further comprising an operating portion further extended from the engaging groove at a base end of the connecting pin. According to this configuration, there is no need to bend the connecting pin, and the manufacturing is facilitated.

[0025]

The present invention is configured as described above, and has the following effects. According to the first aspect of the invention, parts management and transportation to the work site can be easily performed, and the work of connecting the braces can be easily and quickly performed at the work site.

According to the second aspect of the present invention, the connecting pins are automatically locked in the connected state, so that the connecting operation of the brace can be performed more easily and in a shorter time. Claim 3
According to the invention described in (1), the processing of the connecting pin can be efficiently performed in a short time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along line 1-1 of FIG. 3 showing a connection structure of a brace.

FIG. 2 is a front view showing the entire connection structure of the brace for shoring.

FIG. 3 is an enlarged partial front view showing a part of FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a sectional view showing the operation state of FIG. 1;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 5;

FIG. 7 is a cross-sectional view showing a connection structure of a conventional support brace.

[Explanation of symbols]

11 ... vertical pipe, 13 ... horizontal pipe, 16 ... brace, 1
7 mounting bracket, 17a mounting piece, 18 support hole, 19
Supporting boss, 20: insertion hole, 22: connecting pin, 23: concave groove, 24: locking portion for retaining, 25: engaging groove, 26: bent portion also serving as operating portion, 27: engaging projection Engagement screw.

Claims (3)

(57) [Claims] 1. A connecting structure of a brace for support for connecting a brace obliquely between a horizontal pipe or a vertical pipe of a support, wherein a pair of horizontal or vertical pipes can be interposed at an end of the brace. Fixing the mounting bracket having the mounting piece of, between the mounting pieces of the mounting bracket, movably and rotatably support a connecting pin that can be inserted into the insertion hole of the horizontal pipe or the vertical pipe, A concave groove extending in the axial direction is formed on the outer periphery, and a retaining portion for retaining is formed at the tip of the concave groove, and a circumferential direction is formed on the outer periphery of the connecting pin so as to communicate with the base end of the concave groove. A connecting structure of a support brace, wherein an engaging groove extending to the mounting bracket is formed, and one mounting piece of the mounting bracket is provided with a concave groove and an engaging protrusion engageable with the engaging groove. 2. A bent portion is formed at a base end of the connecting pin in a direction different from a position where a concave groove is formed, and the connecting pin is inserted into an insertion hole of a horizontal pipe or a vertical pipe.
2. The connection structure for a brace for support according to claim 1, wherein the bent portion is rotated by its own weight so that the engagement position of the engagement protrusion is relatively moved from the base end of the concave groove into the engagement groove. . 3. The connecting structure of a brace for support according to claim 1, wherein the concave groove of the connecting pin is formed by pressing, and the engaging groove is formed by cutting.