JP2018035593A - Springing-out bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a springing-out bracket capable of adjusting a position for standing up a column in response to a springing-out width of a springing-out part of a building, and being also high in safety and workability.SOLUTION: A springing-out bracket comprises a horizontal member 11 having an upper side connection part 15 connected to a receiving metal fitting of a main column in one end part being the base end part side, having a sub-column receiving material 16 for receiving a sub-column to the other end part and forming a right angle to the main column in a state of being connected to the main column via the upper side connection part 15, an auxiliary horizontal member 12 arranged in parallel to the horizontal member 11 in a lower position of the horizontal member 11 and fixed to a girth 21 suspended from the horizontal member 11 and a diagonal member 13 fixed to the auxiliary horizontal member 12 in an upper end part and having a lower side connection part 23 connected to the other receiving metal fitting of the main column in a lower end part, and the horizontal member 11 and the auxiliary horizontal member 12 have respectively expansion mechanisms 11M and 12M capable of adjusting a separation distance of the sub-column receiving material 16 to the upper side connection part 15 in response to a springing-out width of a building.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a spring bracket that is supported at a base end portion by a metal fitting provided on a support column of a scaffold, and that supports another support column at a front end portion outside a projecting portion of a building.

  In building construction, struts are arranged adjacent to a building at predetermined intervals, and these struts are connected with a cloth material in the direction between the beams and in the row direction to form a temporary scaffold. At this time, if there is a protruding part (overhanging part) in the building and it is not possible to stand up the pillars etc. from the ground, a protruding bracket (also called an overhanging bracket) is attached to the outside from the middle of the building. A method of constructing a scaffold on top is generally used.

  As a spring-out bracket, for example, there is one described in Patent Document 1, and this bracket has a wedge piece that is detachably fastened to a socket provided on a support column at a base end portion, and another bracket at a distal end portion. It consists of a horizontal member provided with an exterior cylinder that supports the column, and a reinforcing member extending obliquely downward from the lower surface of the intermediate part toward the base end, and the horizontal member is supported through a wedge piece. By simply attaching it to the bracket, it is possible to install a tread board or another support on the bracket.

JP 2010-275770 A

  However, the conventional spring bracket is designed on the assumption that it is used for a spring part with a relatively small spring width (projection length), such as a house eaves or a veranda. It cannot be applied to a protruding portion having a relatively large protruding width such as a viaduct such as a railway or a road. In addition, the protruding width of the protruding portion is often different for each viaduct, and even in this respect, the conventional protruding bracket in which the length of the horizontal member is constant is not suitable for use in the viaduct. .

  For this reason, conventionally, in a large building such as a viaduct, when a jumping scaffold is constructed on the outside of the jumping portion, a single-tube scaffold must be used. Specifically, FIG. ) First, build the scaffolding p from the ground along the bridge pier B3 of the viaduct B with the building frame, stepping board, brace, handrail, etc. The horizontal material ph is fixed to the building frame of the scaffolding p by the clamp c, and then a step board g is laid on the horizontal material ph as shown in FIG. The upper end portion of the diagonal member pt is joined by the clamp c, and the lower end side of the oblique member pt is joined to the building frame by the clamp c. Then, as shown in FIG. Clamp a support pv made of a single tube to the tip of the material ph with a clamp c Joined erected in, and methods for attaching the bracket br etc. out bouncing post pv as shown in FIG. 7 (d) are taken.

  However, in the construction of a spring scaffold using a single-tube scaffold, it is necessary to install a long single pipe horizontally corresponding to the jump-out part with a large jump width, which is troublesome and dangerous. It was. In addition, since the single pipes are assembled while being aligned on site, the installation status of the jumping scaffold is different for each builder, and the safety including the strength of the jumping scaffold may be different.

  Therefore, the present invention solves the above-mentioned problems of the prior art, and provides a jumping bracket that can adjust the position where the column is raised in accordance with the jumping width of the jumping part of the building and has high safety and workability. The purpose is to do.

  The present invention is a spring bracket that is supported by a receiving bracket provided on a main column of a scaffold at a base end portion, and supports a sub column outside a spring protruding portion of a building at a front end portion. It has an upper connecting part that is connected to the bracket of the main strut at one end and a sub strut receiving material that receives the sub strut at the other end, and is connected to the main strut via the upper connecting part A horizontal member that is perpendicular to the main strut in the state of being made, and an auxiliary horizontal member that is arranged in parallel with the horizontal member at a position below the horizontal member and is fixed to a connecting member that hangs down from the horizontal member, A diagonal member having a lower connecting portion fixed to the auxiliary horizontal member at the upper end portion and connected to another receiving bracket of the main support at the lower end portion, the horizontal member and the auxiliary horizontal member being a spring of the building Adjust the separation distance of the sub strut support material from the upper connection part according to the width It is characterized in that it has a capability of stretching mechanisms, respectively.

  In the spring bracket of the present invention, it is preferable that each expansion / contraction mechanism has an outer tube material and an inner tube material that is inserted into the outer tube material so as to freely enter and exit.

  Further, the spring bracket according to the present invention preferably includes a stiffener that connects the horizontal member and the diagonal member along the main support column.

  Furthermore, in the spring-out bracket of the present invention, the diagonal member has a hanging piece extending along the main column at the lower end portion thereof, and the hanging piece has a lower connecting portion disposed at the lower portion thereof, It is preferable that a stopper that contacts the side surface of the main column is provided at the top.

  Furthermore, in the jumping bracket of the present invention, the jumping bracket is a bracket for the viaduct jumping part, and the distance between the auxiliary strut support members with respect to the upper connecting part can be adjusted within a range of 1600 mm to 2000 mm. It is preferable that

  According to the jumping bracket of the present invention, the auxiliary strut receiving member having the upper connecting portion connected to the receiving member of the main strut at one end on the base end side and receiving the sub strut at the other end. A horizontal member that is perpendicular to the main column in a state of being connected to the main column via the upper connecting part, and is disposed in parallel with the horizontal member at a position below the horizontal member and the horizontal member An auxiliary horizontal member fixed to the connecting material hanging from the bottom, and an oblique member having a lower connecting portion fixed to the auxiliary horizontal member at the upper end portion and connected to the other metal fittings of the main column at the lower end portion. Therefore, it is possible to easily install the spring-out bracket by connecting the upper connecting part and the lower connecting part to the receiving bracket of the main column, and it is possible to obtain excellent workability and the installation situation for each installer. There is no difference. Furthermore, by adopting a double support structure with a horizontal member and an auxiliary horizontal member at the tip of the spring bracket against the increase in the amount of deflection caused by the load that is a concern due to the lengthening of the horizontal member, Deflection can be suppressed or prevented. Furthermore, each of the horizontal members and the auxiliary horizontal members is provided with an expansion / contraction mechanism that allows the length to be freely changed, so that it can be reliably adapted to buildings with different jumping widths, and in advance on the ground. By adjusting the lengths of the horizontal member and the auxiliary horizontal member, it is possible to reduce the work at a high place and further improve the safety.

FIG. 1 is a view showing a state in which a jumping scaffold is constructed on the outside of a jumper of a viaduct as an example of a building using the jumping bracket of one embodiment of the present invention. FIG. 2 is a perspective view showing a part of a column to which the jump bracket of the present embodiment is attached or a part of a column supported by the jump bracket of the present embodiment. FIG. 3 is a side view showing details of the pop-up bracket of the embodiment of the present invention shown in FIG. FIG. 4 is a front view showing details of the pop-up bracket of the embodiment of the present invention shown in FIG. FIG. 5 is a view showing a method for constructing a spring scaffold according to an embodiment of the present invention using the spring bracket according to the embodiment of the present invention shown in FIG. 1. FIG. 6 is a view showing an example of a modified example of the tightening structure of the upper connecting part and the lower connecting part and the main support in the spring bracket of the present invention, (a) shows a modified example of the metal fitting, (B) shows the modification of the upper side connection part and lower side connection part which match the receiving metal fitting of (a). FIG. 7 is a diagram showing a procedure for constructing a jumping scaffold on the outside of a jumper of a viaduct using a conventional single-tube scaffold.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a view showing a state in which a jumping scaffold is constructed outside a jumping part of a viaduct as an example of a building using the jumping bracket of one embodiment of the present invention, and FIG. FIG. 3 is a perspective view showing a part of a column to which the jump bracket of the present embodiment is attached or a part of a column supported by the jump bracket of the present embodiment. FIG. 3 is a perspective view of the present invention shown in FIG. FIG. 4 is a side view showing details of the jumping bracket of one embodiment, and FIG. 4 is a front view showing details of the jumping bracket of one embodiment of the present invention shown in FIG. 1.

  As shown in FIG. 1, when constructing the jumping scaffold Sp along the outside of the rail B2 rising from the end of the floor slab B1 of the viaduct B, the base scaffold Sb supporting the jumping scaffold Sp is formed on the bridge pier B3 of the viaduct B. Assembled along. The basic scaffold Sb is a plurality of struts arranged along the vertical direction (hereinafter, referred to as “main strut” to distinguish from the struts of the jumping scaffold Sp) p1 and between the main struts p1 along the horizontal direction, respectively. In addition to the cloth material h and the tread board g to be bridged, a brace and a handrail are provided between these members in an inclined posture.

  As shown in FIG. 2, the main column p <b> 1 is configured by a metal pipe, and has a plurality of receiving brackets k for connecting the cloth material h, the handrail, the jumping bracket 10, and the like on the outer peripheral surface thereof. ing. In the illustrated example, the receiving metal fitting k is constituted by a socket k having a U-shaped cross section that is attached to the outer peripheral surface of the main column p1 so as to protrude in four directions. Each socket k has its front end edges fixed to the outer peripheral surface of the support by welding, and the inside of the socket k is opened in the vertical direction.

  As shown in FIG. 1, the main strut p1 is piled up to a position just before the bottom surface of the floor slab B1 of the viaduct B, and the main strut p1 jumps outward so as to avoid the protruding portion B4 of the viaduct B. A bracket 10 is attached. Further, a strut of a splash scaffold Sp (hereinafter referred to as “sub-strut” for distinction) p2 is erected at the tip of the jump bracket 10. As shown in FIG. 2, the sub strut p2 also has the same structure as the main strut p1, and has a plurality of catches k for connecting the cloth material h, handrails and the like on its outer peripheral surface. Further, the sub strut p2 or the cloth material h coupled to the sub strut p2 is coupled and fixed to the rail B2 of the viaduct B via the wall connecting material w.

  FIG. 3 is a side view showing the splash bracket 10 of the embodiment of the present invention shown in FIG. 1, and FIG. 4 is a front view. As shown in this figure, the spring bracket 10 mainly includes a horizontal member 11, an auxiliary horizontal member 12, and a diagonal member 13.

  The horizontal member 11 has an upper connecting portion 15 connected to the receiving bracket k of the main column p1 at one end which is the base end side, and a sub column receiving member 16 which receives the sub column p2 at the other end. Have The horizontal member 11 is disposed at a right angle to the main column p1 in a state where the horizontal member 11 is connected to the main column p1 via the upper connection part 15. The upper connecting portion 15 has a U-shaped cross section, and has an insertion fitting 15a fixed to the end of the horizontal member 11 with its open side facing outward (main strut p1 side), and can be raised and lowered within the insertion fitting 15a. And a wedge 15b that is press-fitted between the outer peripheral surface of the main support column p1 and the insertion fitting 15a when descending, insert the insertion fitting 15a into the fitting k, and drive the wedge 15b downward. As a result, the horizontal member 11 is connected to the main column p1. Note that the cloth material h shown in FIG. 1 can also be connected to the main support p1 or the sub-support p2 by the same wedge binding method.

  The horizontal member 11 is inserted into the outer tube member 11a so as to be able to enter and leave the outer tube member 11a having the upper connecting portion 15 at the end portion on the base end portion side, and the auxiliary column receiving member 16 is fixed to the end portion on the distal end portion side. And the inner tube material 11b. The outer tube material 11a and the inner tube material 11b constitute an expansion / contraction mechanism 11M of the horizontal material 11. A fixing bolt 18 is screwed into the inner tube material 11 b, and the fixing bolt 18 is prevented from loosening by a double nut 19. Thereby, the relative position of the outer tube material 11a and the inner tube material 11b is fixed, and the length variation of the horizontal material 11 during use is prevented.

  The sub strut receiving member 16 is constituted by a short metal pipe, and has an insertion portion 16a inserted into the lower end portion of the sub strut p2 and supporting the sub strut p2 at its upper end. As shown in FIG. 4, a receiving bracket 16 c having the same structure as the receiving bracket k of the main column p <b> 1 is fixed to the outer peripheral surface of the intermediate portion of the sub-column receiving member 16.

  The auxiliary horizontal member 12 is shorter than the horizontal member 11, is disposed in parallel with the horizontal member 11 at a position below the horizontal member 11, and is fixed to a connecting member 21 that hangs down from the horizontal member 11. The auxiliary horizontal member 12 includes an outer tube member 12a supported by the horizontal member 11 by a connecting member 21, and an outer tube member 12a which is inserted into the outer tube member 12a so as to freely enter and exit. It is comprised from the pipe material 12b. The outer tube material 12a and the inner tube material 12b constitute an expansion / contraction mechanism 12M of the auxiliary horizontal material 12.

  The diagonal member 13 is composed of a metal pipe, and is fixed to the outer tube member 12a of the auxiliary horizontal member 12 at the upper end. A hanging piece 13a extending along the main column p1 is fixed to the lower end portion of the diagonal member 13. The hanging piece 13a is provided with a lower connecting portion 23 connected to the bracket k of the main column p1 and a stopper 24 that can contact the outer peripheral surface of the main column p1 at a position adjacent to the upper side of the lower connecting portion 23. Has been.

  The lower connecting portion 23 is fixed to the hanging piece 13a of the diagonal member 13 and sandwiches the receiving bracket k of the main support column p1 up and down, and passes through the sandwiching bracket 23a and the receiving bracket k up and down. And a wedge member 23b that is detachably connected. The wedge member 23b is formed with a vertical hole (through hole) 23c extending along the extending direction (vertical direction) of the wedge member 23b, and the wedge member 23b is sandwiched via a pin 23d inserted through the vertical hole 23c. The metal fitting 23a is held up and down.

  In the spring bracket 10 of the present embodiment, the horizontal member 11 and the diagonal member 13 are reinforced by a stiffener 28 that connects them in the vertical direction, and the auxiliary horizontal member 12 and the diagonal member 13 are not connected. It is reinforced by a bundle 29 that connects these in the vertical direction.

  In order to construct the spring scaffold Sp on the outside of the rail B2 rising from the end of the floor slab B1 of the viaduct B using the spring bracket 10 configured in this way, first, as shown in FIG. In addition, a scaffold (basic scaffold) Sb is constructed from the ground surface along the bridge pier B3 of the viaduct B to the labor of the lower surface of the floor slab B1 with a main support p1, cloth material h, tread g, brace, handrail, and the like.

  Next, the lengths of the horizontal member 11 and the auxiliary horizontal member 12 are adjusted in advance on the ground in consideration of the jumping width of the jumping part B4 via the extension mechanisms 11M and 12M, as shown in FIG. As shown, the worker on the upper layer side of the foundation scaffold Sb pulls up the lifting bracket 10 using a rope or the like.

  Then, as shown in FIG. 5 (b), an upper layer operator connects and fixes the upper connecting portion 15 of the bracket 10 to the bracket k of the main column p1, and a lower layer operator protrudes the bracket 10 as shown in FIG. The lower connecting portion 23 is connected and fixed to the other receiving metal fitting k located below the receiving metal fitting k to which the upper connecting portion 15 is connected. At this time, the stopper 24 disposed at the lower end portion of the diagonal member 13 contacts the outer peripheral surface of the main column p1 at a position adjacent to the receiving bracket k, so that the load applied to the lower connecting portion 23 is reduced. At the same time, stability is achieved.

  After the spring bracket 10 is attached to the main column p1 in this way, as shown in FIG. 5C, an appropriate number of treads g are bridged over the horizontal member 11 of the spring bracket 10 to form a work floor. By placing the auxiliary strut p2 on the auxiliary strut receiving member 16 located at the tip of the jumping bracket 10 and assembling the conventional small jumper bracket 40, tread g, bracing, handrail, wall connecting material, etc. As shown in FIG. 1, the scaffolding Sp is constructed on the outside of the rail B2 of the viaduct B.

  As described above, when the spring scaffold Sp is constructed using the spring bracket 10, the spring bracket 10 is connected by connecting the upper connection portion 15 and the lower connection portion 23 to the receiving bracket k of the main column p1. Since it can install, it can obtain the outstanding workability | operativity and an installation condition does not differ for every installer.

  Furthermore, by adopting a double support structure with the horizontal member 11 and the auxiliary horizontal member 12 at the tip of the jumping bracket 10 against the increase in the amount of deflection caused by the load which is a concern due to the lengthening of the horizontal member 11. The deflection at the tip can be suppressed or prevented. The jump bracket 10 having such a special support structure at the tip portion is suitable as a flyover bracket for viaduct, and in this case, the separation distance of the auxiliary support member 16 with respect to the upper connecting portion 15 is 1600 mm to 2000 mm. If it can be adjusted within the range, it can be advantageously adapted to the protruding portion B4 of the viaduct B.

  Furthermore, by providing the horizontal members 11 and the auxiliary horizontal members 12 with the extension mechanisms 11M and 12M that allow the lengths to be changed, the horizontal members 11 and the auxiliary horizontal members 12 can be surely adapted to buildings having different jumping widths. In addition, by adjusting the lengths of the horizontal member 11 and the auxiliary horizontal member 12 in advance on the ground, it is possible to reduce work at high places and improve safety.

  In addition, the fastening structure of the upper side connection part 15 and the lower side connection part 23, and the main support | pillar p1 is not restricted only to what is shown by the said embodiment. For example, as shown in FIG. 6A, the metal support k of the main support column p1 is a flange k ′ with an engagement hole kh instead of a socket, and the upper connecting portion 14 and the lower connecting portion 23 are 6 (b), the upper connecting portion 15 is configured to include an engagement piece or wedge fitting 36 that fits into the engagement hole kh, and an end fitting 37 that is locked to the wedge fitting 36. Alternatively, the lower connecting portion 23 and the main column p1 may be tightly coupled.

  Thus, according to the present invention, it is possible to adjust the position where the column is raised in accordance with the protruding width of the protruding portion of the building, and to provide a protruding bracket with high safety and workability.

DESCRIPTION OF SYMBOLS 10 Spring bracket 11 Horizontal material 11a Outer tube material 11b Inner tube material 11M Expansion / contraction mechanism 12 Auxiliary horizontal material 12a Outer tube material 12b Inner tube material 12M Expansion / contraction mechanism 13 Diagonal material 15 Upper connection part 16 Sub strut receiving material 21 Connecting material 23 Lower connection part 24 Stopper 28 Stiffener p1 Main strut p2 Sub strut

Claims (5)

It is a spring bracket that is supported by a bracket provided on the main column of the scaffold at the base end and supports the auxiliary column outside the spring of the building at the tip,
It has an upper connection part connected with the receiving metal fitting of the main support at one end which is the base end side, and has an auxiliary support material which receives the sub support at the other end, and the upper connection A horizontal member perpendicular to the main strut in a state of being connected to the main strut through a section;
An auxiliary horizontal member that is arranged in parallel with the horizontal member at a position below the horizontal member and is fixed to a connecting member that is suspended from the horizontal member;
A diagonal member fixed to the auxiliary horizontal member at the upper end portion and having a lower connecting portion connected to the other metal fitting of the main support at the lower end portion;
The horizontal bracket and the auxiliary horizontal material each have a telescopic mechanism capable of adjusting a separation distance of the auxiliary strut receiving material from the upper connecting portion according to a projecting width of a building.   2. The jump bracket according to claim 1, wherein each expansion / contraction mechanism has an outer tube material and an inner tube material inserted into the outer tube material so as to freely enter and exit.   The spring bracket according to claim 1 or 2, further comprising a stiffening member that connects the horizontal member and the diagonal member along the main support column.   The diagonal member has a hanging piece extending along the main column at a lower end portion thereof, and the lower piece has the lower connecting portion disposed at a lower portion thereof and abuts on a side surface of the main column at an upper portion thereof. The spring bracket according to any one of claims 1 to 3, wherein a stopper is provided.   2. The protruding bracket is a bracket for a viaduct protruding portion, and a separation distance of the auxiliary support member with respect to the upper connecting portion can be adjusted within a range of 1600 mm to 2000 mm. To 4. The spring bracket according to any one of items 4 to 4.

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