JP4057516B2 - Fixing bracket and handrail frame - Google Patents

Description

The present invention relates to a handrail frame fixing bracket and a handrail frame that can be detachably attached to a scaffolding frame used in a construction site or the like.

  A framework scaffold used at a construction site or the like is usually formed by assembling a plurality of torii-shaped or H-shaped building frames composed of horizontal rails and vertical columns.

  After standing a plurality of building frames at right angles to the building at a predetermined interval, attaching and fixing a streak to the building frame to make the building frames self-supporting, then attaching and fixing the handrail frame In addition, a scaffolding board (cloth board) is laid on the horizontal rail of the building frame to form one unit of scaffolding. Next, after placing a separately prepared building frame on the already erected building frame and attaching and fixing the separately prepared strut and handrail frame to this building frame, the newly formed self-standing The scaffolding of the upper level is formed by suspending a separately prepared scaffolding plate on the horizontal frame of the building frame. In order to place another building frame on the building frame, the building column is usually placed by adding the vertical column of another building frame on the vertical column constituting the building frame. By repeating this sequentially, the entire framework scaffolding is formed. A handrail frame is attached to each stage of the scaffold in order to protect the safety of workers who work on the scaffold.

  When assembling this frame scaffold from the bottom, if the handrail frame is attached after the worker gets on the uppermost scaffold, there is a risk that the worker falls. In order to prevent the operator from falling, the operator can remove the handrail frame for the uppermost scaffold from the position of the scaffold one below the uppermost scaffold (the handrail frame is already attached to this scaffold). It was possible to protect the safety of the worker by going through the order in which the worker got on the top scaffold after attaching in advance. This is particularly referred to as a “preceding handrail frame”. Hereinafter, the handrail frame is sometimes referred to as a preceding handrail frame.

  As described above, the preceding handrail frame is used when the frame scaffolding is sequentially assembled from the bottom, but after the frame scaffolding is assembled, it functions as a normal handrail frame.

  In addition, when removing the frame scaffold from the top in reverse, the operator can remove the handrail frame for the top scaffold from the position of the scaffold one below the top scaffold. Can keep people safe.

  FIG. 9 is a front view showing an example of a preceding handrail frame. The preceding handrail frame 1 has a frame-shaped periphery composed of two left and right building materials 2, 2 and an upper horizontal material 3 and a lower horizontal material 4, and a pair of first reinforcements connecting the building material and the lower horizontal material. The materials 5 and 5 and the second reinforcing material 6 that connects the pair of first reinforcing materials are provided in the frame. The building material is provided with an upper fixture 7, a positioning fixture 8, and a lower fixture 9 in order from the top outside the frame.

  FIG. 10 is a schematic diagram showing an operation of sequentially assembling a frame scaffold from below using a torii-shaped building frame and a leading handrail frame. FIG. 10A shows a front view of the framework scaffold, and FIG. 10B shows a right side view of the framework scaffold.

  The scaffolding plate 51 for the current scaffold where the worker 20 stands is after the worker attaches the leading handrail frame 52 between the adjacent building frames 43 of the lower scaffolding from the lower scaffolding plate (not shown). The scaffolding plate 51 is bridged over the horizontal beam 44 of the building frame 43 of the lower scaffold. At this time, between the adjacent building frames 43 of the lower scaffold, the struts 41 are obliquely attached to the building 40 side, and the plurality of building frames 43 form a three-dimensional structure. On the opposite side of the building, the upper fixing bracket 7 of the preceding handrail frame 42 for the lower scaffold and the lower fixing bracket 9 of the preceding handrail frame 52 for the current scaffold are fixed, and the preceding handrail for the lower scaffolding is fixed. Not only the frame 42 but also the preceding handrail frame 52 for the current scaffold is already installed.

  The worker 20 currently rides on the scaffold board 51 and puts the two vertical columns 55 of the building frame 53 for the current scaffold on the two vertical columns 45 of the building frame 43 for the lower scaffold. A plurality of building frames 53 for the current scaffold are installed by fitting and connecting in the vertical direction. The worker 20 can prevent falling by attaching one end of the safety belt 70 to the preceding handrail frame 52 for the current scaffold that has already been installed and attaching the other end to his / her waist. The upper fixing bracket 7 of the current handrail frame 52 for the current scaffold is fixed to the vertical column 55 of the building frame 53 after the building frame 53 for the current scaffold is installed.

  In FIG. 11, the work procedure at the time of attaching a preceding handrail frame to a building frame is shown. FIG. 11A is a right side view of the attaching operation, and FIG. 11B is a front view of the attaching operation.

  In this figure, the worker 20 stands on the scaffolding plate 51 for the current scaffold, lifts the preceding handrail frame 62 for the upper scaffold, and attaches the two positioning brackets 8 to the horizontal beam 54 of the adjacent building frame 53. The leading handrail frame 62 is rotated with the two positioning brackets 8 as fulcrums, and the two lower fixing brackets 9 provided on the leading handrail frame 62 are attached to the adjacent building frames 53. Press against the vertical column 55 and fix. Thus, the upper handrail frame 62 for the upper scaffold is fixed to the adjacent building frame 53 for the current scaffold.

  On the other hand, when removing the frame scaffold from the top, the worker standing on the lower scaffold simply removes the lower fixing bracket from the building frame, and then reverses the handrail frame with the positioning bracket as a fulcrum. Easy to remove.

  FIG. 12 shows an example (top view) of a lower fixing bracket for fixing the preceding handrail frame to the building frame. From the joint member 11 having the curved portion shaped to embrace the vertical column 35 of the building frame, and the holding member 12 having the curved portion similarly shaped to embrace the vertical column and having the wedge (wedge) metal fitting 13 at the tip thereof. Thus, the fixing bracket 10 that can rotate around the shaft 14 is attached to the building material 2 of the handrail frame by bolts and nuts and welding.

  Here, in order to hold the curved portion that embraces the vertical column 35 of the building frame in a released state, the holding member 12 having the wedge bracket 13 is forced from the joint member by incorporating the leaf spring 16 in the joint member 11. Are spaced apart. The fixing bracket 10 is fixed by a wedge after the vertical column 35 of the building frame is held in the curved portion of the joint member 11 and the pressing member 12 having the wedge bracket 13 is manually rotated in the arrow direction.

  The procedure for fixing the handrail frame to the vertical column 35 of the building frame using this fixing bracket will be described with reference to FIG. 13 (a) and 13 (b) are top views of the fixing bracket, and FIGS. 13 (c) and 13 (d) are rear views of the fixing bracket.

  First, (a) after the vertical column 35 of the building frame is pressed against the curved portion of the joint member 11 in the released state, (b) the holding member 12 having the wedge metal fitting 13 is manually moved around the shaft 14. By rotating, the leaf spring 16 is removed, and the vertical column 35 of the building frame is sandwiched between the curved portion of the joint member 11 and the curved portion of the pressing member 12. Then, (c) the wedge metal 13 is driven with a hammer 17 between the distal end of the joint member 11 and the distal end of the pressing member 12, and (d) between the curved portion of the joint member 11 and the curved portion of the pressing member 12. Securely fix the vertical column 35 of the building frame.

  However, in the case of such a fixture, there are operational and structural problems listed in (i) and (ii) below.

  (i) It is necessary to be able to hold the curved portion that embraces the vertical column of the building frame in the released state. In the above example of the fixing bracket, the holding member having the wedge metal fitting is forcibly separated from the joint member by incorporating the leaf spring, but incorporating such a special member increases the cost. It becomes a factor. If such a special member is not used, it is necessary to manually perform a release operation.

  (ii) Since the fixing bracket is composed of three members, that is, a joint member, a pressing member, and a wedge bracket, these also increase the cost.

  Patent Document 1 and Patent Document 2 both describe a fixing bracket made up of two members, a joint member and a pressing member having a wedge function, in order to solve the problem (ii).

  FIG. 14 shows a fixing bracket 10 according to the invention of Patent Document 1, and shows a state before FIG. 14A is fixed and a state after FIG. 14B is fixed.

  Two wedge insertion holes 18 are formed in the joint member 11 having a curved portion, and the pressing member 15 having a wedge function is formed by bending the front end portion and the rear end portion of the pressing member into the illustrated shape. It is what. After holding the vertical column 35 of the building frame in the curved portion, the pressing member 15 having a wedge function is inserted into the wedge insertion holes 18 at two locations by hitting with the hammer 17 to be fixed to the vertical column 35 of the building frame. It is intended to fix the bracket. The fixing bracket 10 is attached to the building material 2 of the handrail frame by welding.

  FIG. 15 shows a fixing metal fitting 10 according to the invention of Patent Document 2, and shows a state before FIG. 15 (a) is fixed and a state after FIG. 15 (b) is fixed.

  A wedge insertion hole 18 is formed in the joint member 11 having a curved portion, and a pressing member 15 having a wedge function having a shape shown in the figure is used. After embedding the vertical column 35 of the building frame in the curved portion, the pressing member 15 having a wedge function is inserted into the wedge hole 18 by hitting it with the hammer 17, whereby the fixing bracket 10 is attached to the vertical column 35 of the building frame. It is something to be fixed. This fixing bracket 10 is also attached to the building material 2 of the handrail frame by welding.

Japanese Patent No. 2594530

JP 2002-371707 A

  As described in (i) above, when attaching the handrail frame to the building frame, it is necessary to hold the curved portion that embraces the vertical column of the building frame in an open state. However, since the fixing brackets proposed in Patent Documents 1 and 2 do not incorporate a special member such as a leaf spring, the vertical column of the building frame is moved manually by moving the holding member also serving as a wedge bracket. The work which makes the bending part to embrace a release state is needed.

  However, since the wedge metal pressing member constituting the fixing metal is easily slid in the horizontal direction, it is difficult to perform the operation of releasing the curved portion.

  Referring to FIG. 16, a fixing operation when the fixing bracket 10 having such a pressing member 15 having a wedge function is used as the lower fixing bracket 9 of the handrail frame will be described. 16A is an operation diagram in which the worker 20 attaches and fixes the handrail frame 1 between the vertical columns 35 of the adjacent building frames, and FIG. 16B is an enlarged view (upper surface) of the fixing bracket 10. Figure). The fixture 10 includes a joint member 11 having a wedge insertion hole 18 and a pressing member 15 having a wedge function, and the joint member 11 is attached to the building material 2 of the handrail frame by welding.

  Here, the handrail frame 1 has an upper fixing bracket 7, a positioning bracket 8 and a lower fixing bracket 9 on the left and right, respectively. The worker 20 in this figure must lift the handrail frame 1 with the lower fixing brackets 9 attached to the left and right by himself and attach and fix the handrail frame 1 to the vertical pillars 35 of the left and right building frames.

  That is, the worker 20 holds the vertical pillars 35 of the left and right building frames on the curved portion of the lower fixing bracket 9 installed on the left and right of the handrail frame 1 while holding the curved portion of the joint member 11 in the released state. The handrail frame 1 is attached and fixed by embedding. For this purpose, the pressing member 15 having a wedge function does not simultaneously block both the entrances of the curved portions of the two left and right joint members 11. Thus, it is necessary to attach the handrail frame 1 to the vertical columns 35 of the left and right building frames. Since the pressing member 15 having a wedge function is slidable in the horizontal direction (arrow direction), when the handrail frame 1 is tilted as shown in FIG. 16A, one of the entrances of the curved portions of the left and right joint members 11 is wedged. It is blocked by the holding member 15 having a function, and the vertical column 35 is prevented from being held in the curved portion of the joint member 11, and the handrail frame 1 is attached to the vertical column 35 of the left and right building frames. I can't do that.

Accordingly, not only a bracket for a handrail frame composed of two members, a joint member and a pressing member having a wedge function, but also a handrail frame fixing having a structure capable of holding a curved portion for holding a vertical column of a building frame in a released state. There is a need for metal fittings.

In order to solve this problem, the inventors of the present invention have studied the shapes and structures of the joint member and the pressing member that constitute the fixing bracket, and as a result, have obtained the following findings (1) to (5).
(1) A wedge function can be imparted to the pressing member simply by making the pressing member itself a wedge shape. That is, the fixing bracket can be constituted by two members, a wedge-shaped pressing member and a joint member.
(2) In order to prevent the wedge-shaped pressing member from closing the entrance of the curved portion of the joint member, the wedge-shaped pressing member is moved in the horizontal direction until the vertical column of the building frame is held in the curved portion of the joint member. The structure may not be moved to
(3) To achieve a structure in which the wedge-shaped pressing member does not move in the horizontal direction even if the handrail frame is slightly tilted, the wedge-shaped pressing member is removed from the joint member by its own weight while the joint member of the fixing bracket is attached to the handrail frame. What is necessary is just to couple | bond with a coupling member so that it may hang down and can rotate on a perpendicular surface with respect to a coupling member. As means for coupling the wedge-shaped pressing member to the joint member so as to be rotatable on a vertical surface, for example, a pin can be used.
(4) In this way, when the wedge-shaped pressing member hangs down from the joint member due to its own weight and the fixing bracket is attached to the building material of the handrail frame, the wedge-shaped pressing member is not tilted even if the handrail frame is slightly tilted. Since it does not move in the horizontal direction, the wedge-shaped pressing member does not block the entrance of the curved portion of the joint member.
(5) Accordingly, even when the fixing bracket is attached to the handrail frame, when the fixing bracket is attached to the building frame, the vertical column of the building frame can be easily held in the curved portion of the joint member. The fixing bracket can be fixed to the building frame by rotating the wedge-shaped pressing member in the horizontal direction and hitting it with a hammer or the like into a wedge insertion guide provided on the joint member.

The present invention has been completed based on these findings. That is, the present invention relates to any of the following handrail frame fixing brackets (1) to (8) and the handrail frame (9). Hereinafter, (1) to (9) may be collectively referred to as the present invention.
(1) A handrail frame fixing bracket that can be detachably attached to a building frame, comprising a curved portion that embraces the vertical column of the building frame, and a wedge-shaped pressing member that can be inserted into the wedge insertion guide A handrail frame fixing bracket, wherein a wedge-shaped pressing member is coupled to a joint member so as to be rotatable on a vertical surface. The wedge insertion guide only needs to have a structure in which a wedge-shaped pressing member can be inserted and fixed. For example, a wedge insertion hole or a wedge insertion frame may be used.
(2) The handrail frame fixing bracket according to (1) above, wherein the wedge-shaped pressing member is coupled to the joint member by a pin and is rotatable on a vertical surface with the pin as a fulcrum.
(3) The handrail according to (1) or (2) above, further comprising a retaining mechanism that prevents the wedge-shaped pressing member from coming out of the wedge insertion guide after the wedge-shaped pressing member is inserted into the wedge insertion guide. Fixing bracket for frame .
(4) The wedge-shaped pressing member has a long hole, and the pin attached to the joint member is fitted in the long hole, so that the wedge-shaped pressing member is movable in the length direction of the long hole with respect to the pin. A handrail frame fixing bracket according to any one of the above (1) to (3), wherein
(5) The handrail frame fixing bracket according to (4) above, wherein the elongated hole shape itself constitutes a retaining mechanism. Examples of the shape of the long hole that constitutes the retaining mechanism include a shape in which a mountain shape and a hollow shape are formed in the hole of the long hole and the pin is hooked.
(6) The joint member has a long hole, and the pin attached to the wedge-shaped pressing member is fitted in the long hole, and the wedge-shaped pressing member is movable in the length direction of the long hole with respect to the joint member The handrail frame fixing bracket according to any one of the above (1) to (3), characterized in that:
(7) The handrail frame fixing bracket of (6) above, wherein the elongated hole shape itself constitutes a retaining mechanism. Examples of the shape of the long hole constituting the retaining mechanism include a shape in which a depression and a mountain are formed in parallel in the middle of the long hole.
(8) The bracket for a handrail frame according to any one of the above (1) to (6), wherein the bracket is attached to a building material of the handrail frame .
(9) A handrail frame comprising the handrail frame fixing bracket according to any one of (1) to (7) above.

ADVANTAGE OF THE INVENTION According to this invention, the fixing bracket for handrail frames which can be easily attached or detached with respect to the building frame used for a construction site etc., and has a simple structure can be provided. Moreover, according to this invention, the handrail frame excellent in the attachment workability | operativity with respect to a building frame can be provided.

A handrail frame fixing bracket and a handrail frame according to the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are examples of a handrail frame fixing bracket according to the present invention, and show a state before FIG. 1 is fixed and a state after FIG. FIG. 1 (a) is a front view before fixing, and FIG. 1 (b) is a top view before fixing. 2 (a) is a front view after fixing, and FIG. 2 (b) is a top view after fixing.

  This fixing bracket includes a joint member 11 having a curved portion for embedding a vertical column 35 of a building frame, a wedge insertion hole 18, and a wedge-shaped pressing member 19, and the wedge-shaped pressing member 19 is a joint member by a pin 21. 11 and is coupled to the joint member 11 so as to be rotatable in a vertical plane with the pin 21 as a fulcrum. The wedge-shaped pressing member 19 has a long hole 22, and a pin 21 attached to the joint member 11 is fitted in the long hole 22. The wedge-shaped pressing member 19 has a long hole with respect to the pin 21. It is movable in the length direction. In the long hole 22, a mountain shape 23 and a hollow shape 24 are formed in the hole so that the pin is hooked, so that the long hole shape itself constitutes a retaining mechanism.

  And the joint member 11 of this fixture is attached to the building material 2 of the handrail frame by welding.

  In a state where the joint member 11 of the fixing bracket is attached to the building material 2 of the handrail frame, the wedge-shaped pressing member 19 hangs down from the joint member 11 due to its own weight, and is rotatable on a vertical surface with respect to the joint member. . Even if the fixture is slightly shaken, the wedge-shaped pressing member 19 naturally moves in the direction of the arrow due to its own weight and hangs down in the vertical direction.

  Therefore, even if the handrail frame is tilted slightly and the fixture is slightly shaken, the wedge-shaped pressing member 19 does not block the entrance of the curved portion of the joint member 11.

  Therefore, when the fixing bracket is attached to the vertical column 35 of the building frame, the vertical column 35 of the building frame can be easily held in the curved portion of the joint member 11 as shown in FIG.

  As described above, after the vertical column 35 of the building frame is held in the curved portion of the joint member 11, the wedge-shaped pressing member 19 is manually rotated in the horizontal direction, and the wedge insertion hole 18 provided in the joint member 11. When the wedge-shaped pressing member 19 is struck with a hammer or the like, the fixing bracket is fixed to the vertical column 35 of the building frame as seen in FIG.

  Next, a mechanism for preventing the wedge-shaped pressing member 19 from coming off by the shape of the long hole 22 will be described with reference to FIG.

  FIG. 3A shows a state in which a wedge-shaped pressing member 19 is inserted into a wedge insertion hole 18 provided in the joint member 11 with a hammer or the like, and the fixing bracket is fixed to the vertical column 35 of the building frame ( Front view).

  FIG. 3B shows a state (front view) when the wedge is loosened and the wedge-shaped pressing member moves to the right side. The elongated hole 22 of the wedge-shaped pressing member 19 is formed with a mountain shape 23 and a hollow shape 24 in the hole, and the portion of the mountain shape 23 hits the pin 21 and is caught, so that the wedge-shaped pressing member that has moved to the right side 19 will stop there. This is a retaining mechanism based on the long hole shape itself. When the wedge-shaped pressing member is tilted more than a certain angle, the hook is released and the wedge-shaped pressing member 19 can be moved further to the right side. However, when the fixing bracket is fixed to the building frame, Since the pressing member is held in a horizontal state, the wedge-shaped pressing member 19 does not come out of the wedge insertion hole 18.

  Here, the wedge-shaped pressing member 19 has such a length that the wedge-shaped pressing member 19 does not come out of the wedge insertion hole 18 in the state shown in FIG. Needless to say, it is necessary.

  In this reverse operation, in order to remove the fixing bracket from the building frame, when the wedge-shaped pressing member 19 is struck with a hammer or the like from the opposite side and an impact of a certain level or more is applied, the wedge is removed from the wedge insertion hole 18, and Since the crest-like portion of the long hole can also pass, the wedge-shaped pressing member 19 can be detached from the wedge insertion hole 18.

  The structure and shape of the joint member that constitutes the fixing bracket may be any as long as it has a curved portion that embraces the vertical column of the building frame, and a wedge insertion guide that has a wedge insertion hole and the like. It is not limited to what is shown. FIG. 4 shows examples of other joint members.

  Further, the shape of the pressing member constituting the fixing bracket may be a wedge shape and is not limited to that shown in FIGS. FIG. 5 shows another example of a wedge-shaped pressing member.

  Until now, the wedge-shaped pressing member 19 has the long hole 22, the pin 21 attached to the joint member 11 is fitted in the long hole 22, and the wedge-shaped pressing member 19 is long with respect to the pin 21. The fixing bracket that can move in the length direction of the hole 22 has been described. However, conversely, the joint member 11 has the long hole 22, the pin 21 attached to the wedge-shaped pressing member 19 is fitted in the long hole 22, and the wedge-shaped pressing member 19 is in contact with the joint member 11. It may be a fixture that is movable in the length direction of the long hole 22.

  Furthermore, when the handrail frame according to the present invention is used, the fixing bracket attached to the handrail frame has the above-described long hole. Therefore, before the handrail frame is fixed to the building frame by the fixing bracket as follows. Easy work in stages.

  Fig.6 (a) shows the front view of the state when the operator 20 lifts the handrail frame 1 which concerns on this invention horizontally. FIG. 6B and FIG. 6C show enlarged views of the lower fixing fittings 91 and 92 of the handrail frame 1 at this time. Here, the wedge-shaped pressing member 19 of the fixing bracket attached to the handrail frame 1 is in a state of being fitted into the wedge insertion hole 18, but is not inserted into the wedge insertion hole 18 by striking with a hammer or the like. To move in the horizontal direction. However, the mountain-shaped portion 23 of the long hole 22 hits the pin 21 and is caught, so that the wedge-shaped pressing member 19 does not move any more and stops there. When the wedge-shaped pressing member 19 of the fixing bracket attached to the handrail frame 1 is placed away from the wedge insertion hole 18, the wedge-shaped pressing member 19 uses the pin 21 as a fulcrum for the joint. Needless to say, it is in a state of hanging freely from the member 11.

  FIG. 7A shows a front view of the state in which the worker 20 then lifts the handrail frame 1 while tilting it obliquely. FIG. 7 (b-1) is an enlarged view of the initial state of the lower fixing bracket 91 of the handrail frame 1 at this time, and FIG. 7 (b-2) shows a wedge-shaped pressing member 19 in the direction of the arrow thereafter. The enlarged views of the state in which the pin 21 is hung from the joint member 11 after being slid are shown. FIG. 7C shows an enlarged view of the state of the other lower fixing bracket 92 of the handrail frame 1 at this time.

  Here, since the wedge-shaped pressing member 19 of the lower fixing metal fitting shown in FIG. 7 (c) is stopped at the wedge insertion hole 18 due to the wedge shape, it does not move further to the right side. On the other hand, since the wedge-shaped pressing member 19 of the lower fixing bracket 91 shown in FIG. 7 (b-1) is tilted by a certain angle or more, it gets over the catch by the mountain-shaped portion 23 of the long hole 22. The wedge-shaped pressing member 19 can be moved further to the right after passing the pin 21. Therefore, the wedge-shaped pressing member 19 is disengaged from the wedge insertion hole 18, and as a result, the wedge-shaped pressing member 19 has the pin 21 as a fulcrum as shown in FIG. It will be in the state which hung down freely from.

  FIG. 8A shows a front view of the state in which the operator 20 further lifts the handrail frame 1 by tilting it in an oblique direction opposite to that in FIG. 8B is an enlarged view of the lower fixing bracket 91 of the handrail frame 1 at this time, and FIGS. 8C-1 and 8C-2 are the other side of the handrail frame 1 at this time. The enlarged views of the lower fixing bracket 92 are respectively shown.

  Here, as shown in FIG. 7, the wedge-shaped pressing member 19 of the lower fixture 91 shown in FIG. 8B is in a state of being pivotably suspended from the joint member 11 with the pin 21 as a fulcrum. Yes. On the other hand, the wedge-shaped pressing member 19 of the other lower fixing bracket 92 shown in FIG. 8 (c-1) is tilted by a certain angle or more, and thus slides in the direction of the arrow. The wedge-shaped pressing member 19 can move to the left side past the pin 21 by overcoming the catch by the mountain-shaped portion 23 of the long hole 22. Therefore, the wedge-shaped pressing member 19 is disengaged from the wedge insertion hole 18. As a result, as shown in FIG. 8 (c-2), the wedge-shaped pressing member 19 has the pin 21 as a fulcrum as a joint member 11. It will be in the state which hung down freely from.

  As described above, when the handrail frame 1 according to the present invention is used, the wedge-shaped pressing member 19 hangs freely from the joint member 11 with the pin 21 as a fulcrum simply by tilting the handrail frame 1 left and right by the operator 20. It becomes a state. Therefore, there is a great advantage that the wedge-shaped pressing member 19 can be released without touching the hand.

  In addition, regarding the fixing bracket according to the present invention, the lower fixing bracket attached to the handrail frame has been described above as an example, but the fixing bracket according to the present invention can also be used as the upper fixing bracket attached to the handrail frame. . In this case, it goes without saying that the upper fixing bracket also has the above-described advantages of the present invention.

  However, unlike the lower fixing bracket, when fixing the upper fixing bracket, the handrail frame is already fixed to each vertical column of the adjacent building frame by the lower fixing bracket. Fixing work is not as difficult as the lower fixing bracket. Therefore, as the upper fixing bracket attached to the handrail frame, the fixing bracket according to the present invention may be used, but a conventional type solid bracket may be used.

ADVANTAGE OF THE INVENTION According to this invention, the fixing bracket for handrail frames which can be easily attached or detached with respect to the building frame used for a construction site etc., and has a simple structure can be provided. Moreover, according to this invention, the handrail frame excellent in the attachment workability | operativity with respect to a building frame can be provided.

FIG. 1 is an example of a fixing bracket according to the present invention, and shows a state before fixing. FIG. 2 is an example of a fixing metal fitting according to the present invention, and shows after fixing. It is drawing explaining the wedge-shaped pressing member retaining mechanism by the shape of the long hole. The example of a coupling member is shown. An example of a wedge-shaped pressing member is shown. The front view which shows a state when the handrail frame which concerns on this invention is lifted horizontally is shown. The state when the handrail frame according to the present invention is tilted and lifted is shown. FIG. 8 shows a state when the handrail frame according to the present invention is lifted while being inclined in an oblique direction opposite to FIG. 7. It is a front view which shows an example of a preceding handrail frame. It is a schematic diagram which shows the operation | work which assembles a frame scaffold sequentially from the bottom using a preceding handrail frame. The work procedure at the time of attaching a preceding handrail frame to a building frame is shown. It is a top view which shows an example of the lower fixing metal fitting for fixing a preceding handrail frame to a building frame. It is a figure explaining the procedure which fixes a handrail frame to the vertical column of a building frame using a fixture. The fixed metal fitting concerning patent documents 1 is shown. The fixed metal fitting concerning patent documents 2 is shown. FIG. 16A is an operation diagram (front view) for attaching a handrail frame having a fixing bracket according to Patent Document 2 to a building frame. FIG. 16B is an enlarged view of the fixing bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handrail frame 2 Building material 3 Upper horizontal material 4 Lower horizontal material 5 First reinforcement material 6 Second reinforcement material 7 Upper fixing metal fitting 8 Positioning metal fitting 9 Lower fixing metal fitting 10 Fixing metal fitting 11 Joint member 12 Pressing member 13 Wedge metal fitting 14 Axis DESCRIPTION OF SYMBOLS 15 Pressing member which has a wedge function 16 Leaf spring 17 Hammer 18 Wedge insertion hole 19 Wedge-shaped pressing member 20 Worker 21 Pin 22 Long hole 23 Mountain shape 24 Recessed shape 33 Building frame 34 Horizontal frame of building frame 35 Vertical column of building frame 40 Building 41 Streaks 42 Leading handrail frame for lower scaffolding 43 Building frame for lower scaffolding 44 Horizontal frame of building frame for lower scaffolding 45 Vertical column of building frame for lower scaffolding 51 Scaffold plate 52 Current scaffolding Leading frame for current scaffold 53 Building frame for current scaffolding 54 Horizontal frame of building frame for current scaffolding 55 Vertical column of building frame for current scaffolding 62 Leading handrail frame for upper scaffolding 70 Safety belt 91 Mounted on handrail frame The The other fixing bracket mounted in a square fixing bracket 92 handrail frame

Claims (9)

A bracket for a handrail frame that can be detachably attached to a building frame, a joint member having a curved portion that embraces the vertical column of the building frame, a wedge insertion guide, and a wedge shape that can be inserted into the wedge insertion guide A handrail frame fixing bracket characterized in that a wedge-shaped pressing member is coupled to a joint member so as to be rotatable in a vertical plane. 2. The handrail frame fixing bracket according to claim 1, wherein the wedge-shaped pressing member is coupled to the joint member by a pin and is rotatable on a vertical surface with the pin as a fulcrum. 3. The handrail frame fixing bracket according to claim 1 or 2, further comprising a retaining mechanism for preventing the wedge-shaped pressing member from coming out of the wedge insertion guide after the wedge-shaped pressing member is inserted into the wedge insertion guide. . The wedge-shaped pressing member has a long hole, the pin attached to the joint member is fitted in the long hole, and the wedge-shaped pressing member is movable in the length direction of the long hole with respect to the pin. The handrail frame fixing bracket according to any one of claims 1 to 3, wherein the handrail frame fixing bracket is a feature. 5. The handrail frame fixing bracket according to claim 4, wherein the elongated hole shape itself constitutes a retaining mechanism. The joint member has a long hole, a pin attached to the wedge-shaped pressing member is fitted in the long hole, and the wedge-shaped pressing member is movable in the length direction of the long hole with respect to the joint member. The bracket for a handrail frame according to any one of claims 1 to 3, wherein the bracket is fixed. 7. The handrail frame fixing bracket according to claim 6, wherein the long hole shape itself constitutes a retaining mechanism. The fixing bracket for a handrail frame according to any one of claims 1 to 6, wherein the bracket is attached to a construction material of the handrail frame . A handrail frame comprising the handrail frame fixing bracket according to any one of claims 1 to 7.

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