JP4704766B2 - Method for forming leading handrail frame and frame scaffold - Google Patents

Description

  The present invention relates to a preceding handrail frame used in a construction site and the like and a method for forming a frame scaffold using the preceding handrail frame.

  Frame scaffolds used at construction sites can be broadly classified as follows: (1) Building frame type scaffolds assembled with members including building frames, and (2) Scaffolding components such as support members and handrail members. There is a tight type scaffolding.

  The “building frame type scaffolding” of (1) is usually formed by assembling a plurality of torii-shaped and H-shaped building frames composed of horizontal bars and vertical columns.

  In order to prevent the worker from falling down during the assembly and disassembly, the handrail method is used. According to this construction method, since the worker can attach the handrail on the road side of the upper scaffold in advance from the lower scaffold, the worker can assemble the frame scaffold safely. In addition, since the worker can remove the handrail on the road side of the upper scaffold from the lower scaffold, the worker can safely dismantle the frame scaffold.

  There are two types of preceding handrail methods for assembling a plurality of building frames to form a scaffold: “preceding handrail frame installation method” and “advanced handrail frame advance method”.

  First, in the “preceding handrail frame installation method”, a framework scaffold is assembled using a building frame as follows.

  In other words, after standing a plurality of building frames at right angles to the building at a predetermined interval, attaching and fixing streaks on the building side between adjacent building frames, By attaching and fixing a handrail frame on the side opposite to the building side between the adjacent building frames, and further spanning a scaffolding board (cloth board) on the side rail of the building frame between the adjacent building frames, 1 Form a unit scaffold. 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, a newly formed independent building The scaffolding on the upper level is formed by bridging a separately prepared scaffolding plate on the side rail of the 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.

  Here, the prepared handrail frame is not attached when forming a scaffold in a certain step, but is attached in advance from the scaffold in the next lower step, so it is referred to as a “preceding handrail frame”. In addition, since the preceding handrail frame is all placed on the frame scaffold as it is and is incorporated as one of the members constituting the framework scaffold, it is referred to as a “preceding handrail frame stationary method”. When an operator stands on the upper scaffolding plate to form a new stepped scaffold, the worker is safe because the handrail has already been installed. Can work.

  FIG. 14 is a schematic diagram showing the work of sequentially assembling the framework scaffold from below using a torii-shaped building frame having a horizontal rail at the top and a stationary handrail frame. (a) is a front view of the framework scaffold and (b) is a right side view of the framework scaffold.

  The scaffold one step below the current scaffold on which the worker 20 stands is formed as follows. Between the adjacent building frames 43 of the lower level scaffolding, the struts 41 are obliquely attached to the side of the building 40 to form a structure in which the plurality of building frames 43 are self-supporting, and on the opposite side of the building The upper fixing bracket 7 of the preceding handrail frame 42 for the lower stage scaffolding and the lower fixing bracket 9 of the preceding handrail frame 52 for the current scaffolding are fixed, and not only the preceding handrail frame 42 for the lower stage scaffolding. A preceding handrail frame 52 for the current scaffold is already installed.

  The preceding handrail frame 52 for the current scaffold is attached between the adjacent building frames 43 while the operator 20 stands on a scaffold plate (not shown) one step below. In addition, the scaffolding plate 51 of the current scaffold on which the worker 20 stands is standing on the scaffolding plate one step below, and the worker 20 is bridged on the horizontal beam 44 of the building frame 43 adjacent to the scaffolding one step below. Is.

  The worker 20 currently rides on the scaffolding plate 51, and on the two vertical columns 45 of the building frame 43 for the scaffold one step below, the two vertical columns 55 of the building frame 53 for the current scaffold. Are installed in a vertical direction, and a plurality of building frames 53 for the current scaffold are installed. 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.

  FIG. 15 shows a work procedure for attaching the stationary type handrail frame to the building frame. (a) is a front view of the installation work, (b) is a right side view of the installation work.

  The worker 20 in this figure stands on the scaffolding plate 51 for the current scaffold, lifts the preceding handrail frame 62 for the upper scaffold, and places the two positioning brackets 8 on the side of the adjacent building frame 53. After being placed at a predetermined position on the crosspiece 54, 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 connected to adjacent building frames. It is pressed against 53 vertical columns 55 and fixed. In this way, the preceding 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 platform simply removes the lower bracket from the building frame and then reverses the handrail frame with the positioning bracket as a fulcrum. Easy to remove.

  The above has described the framework scaffolding based on the “previous handrail deferment method” consisting of a torii-shaped building frame, but instead of the torii-shaped building frame, the framework scaffolding based on the “preceding handrail deferment method” consisting of an H-shaped building frame. Can also be formed.

  FIG. 16 is a schematic diagram showing an operation of sequentially assembling a frame scaffold from below using an H-shaped H frame having a horizontal rail in the middle part and a stationary type handrail frame. (a) is a front view of the framework scaffold and (b) is a right side view of the framework scaffold. Here, the handrail frame is composed of an upper handrail frame 63 and a lower handrail frame 64 for each frame.

  Since the H frame 33 has the horizontal rail 34 at the center, a scaffolding board (cloth board) 51 is bridged around the center of the H frame. This point is different from a torii-shaped building frame having a horizontal rail at the top. The procedure for forming the frame scaffold using the H frame is basically the same as the procedure for forming the frame scaffold using the torii frame.

  That is, a plurality of H frames 33 are erected at right angles to the building 40 at predetermined intervals, and a streak (not shown) is attached and fixed to the building side between adjacent H frames to make the H frame stand alone. After fixing the upper handrail frame 63 for the current scaffold and the lower handrail frame 64 for the upper scaffold on the opposite side of the building between the adjacent H frames, the horizontal rail between the adjacent H frames is further fixed. A scaffolding board (cloth board) 51 is bridged on 34 to form one unit of scaffolding. Next, a separately prepared H frame is placed on the already established H frame, and a separately prepared streak and handrail frame is attached and fixed to the H frame. The scaffolding of the upper stage is formed by bridging a separately prepared scaffolding plate on the horizontal rail of the frame. In order to mount another H frame on the H frame, the vertical column of another H frame is usually mounted on the vertical column 35 constituting the H frame. By repeating this sequentially, the entire framework scaffolding is formed. Here, the lower handrail frame 64 is a preceding handrail frame, which is attached by an operator standing on the scaffold one step below. The upper handrail frame 63 is not a preceding handrail frame because it is attached after the worker stands on the scaffold. However, since the lower handrail frame 64 is already attached in advance when the worker stands on the upper scaffolding plate in order to form a new upper scaffolding, By attaching one end of the safety belt 70 to 64 and attaching the other end to one's waist, it is possible to prevent falling. In this way, the preceding handrail method that uses a specially-shaped building frame instead of the torii-shaped building frame is generally referred to as a “handrail leading dedicated scaffolding method”.

  Next, the “advance handrail frame advance method” will be described. This is the same as the “preceding handrail frame deferment method” in that it is composed of a plurality of building frames and forms a frame scaffold using the preceding handrail frame, but the used handrail frame is not incorporated into the framework scaffold.

  Patent Document 1 discloses a method of forming a framework scaffold using a building frame by the “preceding handrail frame advance method”. The advance handrail frame used here is composed of two handrail pillars and two handrail members connecting them. And the handrail material is comprised from the elastic tube material which consists of a double tube by which the inner tube was inserted in the outer tube, and is connected with the both ends of the handrail material so that it can rotate freely with respect to the handrail pillar. .

  In this “preceding handrail frame forward feed method”, when assembling a scaffold, a handrail frame made of two handrail pillars and a variable-length handrail material that connects these handrail pillars is used. This handrail frame is a kind of preceding handrail frame because the worker is formed standing on the scaffolding plate one step below. However, the preceding handrail frame is further advanced to the upper stage and is not incorporated as a member of the scaffolding of that stage. Even when this advance-feed type handrail frame is used, when an operator stands on the upper scaffolding plate in order to form a new one-step scaffolding, the handrail for the scaffolding at that stage is already used. Since the frame is formed by being advanced from the scaffold one step below, the worker can work safely. If you want to form another scaffold on this stage scaffolding, the scaffolding frame for the scaffolding will be postponed to be used as the preceding railing frame for the scaffolding of the next stage, and the leading railing frame will be postponed. After being done, it is possible to secure the safety of the worker by attaching a separately prepared work handrail.

  In this way, the preceding handrail frame is always forwarded to the scaffold one step above, and is therefore referred to as a “preceding handrail frame advance method”. Therefore, this leading handrail frame is finally incorporated only in the uppermost scaffold of the entire frame scaffold.

  FIG. 17 is a schematic diagram showing an operation of sequentially assembling a frame scaffold from below using a torii-shaped building frame having a horizontal rail at the top and a preceding handrail frame of this forward feed method. (a) is a front view of the framework scaffold and (b) is a right side view of the framework scaffold.

  The scaffold one step below the current scaffold on which the worker 20 stands is formed as follows. That is, between the building frames 43 adjacent to the next lower scaffold, the struts 41 are obliquely attached to the building 40 side to form a structure in which the plurality of building frames 43 are self-supporting. On the opposite side of the building, a preceding handrail frame (not shown) for the scaffold one step below is sent by the worker from the scaffold two steps below and has already been installed as a handrail frame. When standing on the lower scaffold, the preceding handrail frame is forwarded to the current scaffold to be used as the preceding handrail frame 71 for the current scaffold, and then the separately prepared work handrail 15 and streak 41 are attached.

  Therefore, the current handrail frame 71 for the current scaffold on which the worker 20 stands is the current foothold frame for the scaffold one step below the worker standing on the scaffold plate (not shown) one step lower. It is formed by being advanced to be used for a preceding handrail frame. In addition, the scaffolding plate 51 of the current scaffold on which the worker 20 stands is standing on a horizontal plate 44 of the building frame 43 adjacent to the scaffolding of the lower step by standing on the scaffolding plate (not shown) of the lower step. It is the one that was passed over.

  The worker 20 installs two building frames 53 for the current scaffolding, and then only one of the two handrail pillars 72 that constitute the preceding handrail frame 71 that is advanced from the scaffold one step below. Is about to be installed, and a third frame 53 for the current scaffolding is about to be installed. Since the handrail material 73 connecting the two handrail pillars 72 of the preceding handrail frame 71 has a variable length that can be expanded and contracted, the handrail material 73 of the leftmost preceding handrail frame 71 is in an obliquely extended state. ing. Here, the worker 20 attaches one end of the safety belt 70 to the handrail material 73 of the preceding handrail frame for the current scaffold that has been advanced from the scaffold one step below, and attaches the other end to his / her waist to prevent falling. Can be achieved.

  The handrail frame post-feeding operation is as follows. That is, the advance handrail frame 71 is fixed to the vertical column 55 of the adjacent building frame 53 by fixing the two handrail columns 72 to the adjacent vertical column 55 of the building frame 53. Installed between. Then, only one of the two handrail pillars 72 constituting the handrail frame 72 is removed from the vertical pillar 55 and then lifted and fixed along the vertical pillar 55. The handrail material 73 that connects the two handrail pillars 72 is made of an extendable tube material. The handrail material has a variable length and is rotatably connected to the handrail pillar at the front end of the handrail material. Therefore, the handrail material 73 is in an obliquely extended state. Then, after removing the other handrail pillar 72 which comprises the preceding handrail frame 71 from the vertical pillar 55 of a building frame, it lifts and fixes along the vertical pillar. Thus, the advance-type handrail frame is carried to the scaffold one level above. After the advance-type handrail frame is carried to the scaffold one step above, the operator's safety can be achieved by attaching the work handrail 15 and the strut 41 between the adjacent building frames.

  Other methods of forming a framework scaffold using a building frame with the "advanced handrail frame advance method" include a type in which the preceding handrail frame is lifted via a separate rail, or a preceding handrail frame instead of the rail. There is a type of lifting.

  The above describes the `` building frame type scaffolding '' formed by assembling the members including the building frame of (1), but as the frame scaffolding, the scaffolding structural members such as the column members and handrail members of (2) are tightly coupled. There is a “tight-type scaffold” that is assembled.

  (2) "tightening type scaffolding" is a scaffolding member provided with a mounting member called "coma" to which a scaffolding member such as a handrail member, a diagonal material (brace material), a brace member is attached via a frame, Then, after these scaffold constituent members are fastened together with wedges or the like in the top, they are assembled by bridging a scaffold board (cloth board).

  FIG. 18 shows an example of the structure of a tight-binding scaffold. (a) is a front view of a binding type scaffold, (b) is an enlarged view of the periphery of a mounting member (frame), and (c) is a right side view of the binding type scaffold.

  The tight scaffolding is formed as follows. The diagonal member 19 is attached between the adjacent columns 17 on the side of the building 40 so as to connect the frames 22 of the columns 17, and the frame 22 of the columns 18 is connected between the adjacent columns 18 on the opposite side of the building. The work handrail 15 is attached in a form, and the diagonal member 19 and the work handrail 15 are fastened with a wedge or the like at the top 22 respectively. Further, the arm wood 21 is attached in such a manner that the column 17 of the column 17 and the column 18 is connected between the column 17 on the building side and the column 18 on the opposite side of the building, and the arm wood 21 is fastened with a wedge or the like at the frame 22. By doing so, the column becomes independent. Thereafter, a scaffold plate (fabric plate) 51 is bridged on the adjacent arm lumber 21 to form a one-stage tight scaffold. Note that the diagonal member 19 may be attached between the columns 18.

  Next, another strut member 16 is vertically joined on the strut member 16 located at the top of the scaffold, and similarly, a one-step scaffold is formed. By repeating this in sequence, the entire tight-binding scaffold is formed.

In this example, the method of assembling the “tightened scaffold” using the work handrail has been described. However, in order to prevent the worker from falling, the work handrail is not attached when the scaffold is formed at a certain stage. In the same manner as in the “building frame type scaffolding”, it is required to attach it in advance from the scaffolding of the next lower stage. Therefore, it is necessary to apply the advance handrail frame to the “tightening type scaffold” .

  Patent Document 2 discloses such a “tightening type scaffold”, but there is no description about a forward-feed type handrail frame suitable for the “tightening type scaffold”.

JP 2003-193676 A JP 2000-248737 A

  Various leading handrail construction methods have been proposed, but the `` preceding handrail frame deferment method '' is large in size, and takes time and effort to transport and attach it, and is incorporated into the completed framework scaffold, Since a large number of handrail frames must be prepared, leasing costs and transportation costs increase, resulting in an increase in construction work costs.

  On the other hand, in the “advance handrail frame advance method”, since the prior handrail frame is incorporated only in the uppermost stage scaffolding, the number of handrail frames to be prepared is small, so the leasing fee and the transportation cost can be reduced accordingly. . However, the conventional advance handrail frame has a double-pipe structure for expanding and contracting the handrail column. Therefore, it is vulnerable to impacts, and it can expand and contract due to foreign matter adhering or rusting. There were problems such as disappearing.

  Further, the “advance handrail frame advance method” can be used not only for “building frame type scaffolding” but also for “tightening type scaffolding”. However, in the “tightening type scaffold”, there is an attachment member called “frame” for attaching a scaffold component member such as a handrail member, a diagonal member (brace material), a brace member, a scaffold board (cloth board) to the support member. Although often used, since the top has a protruding shape, it is often difficult to bring the conventional handrail frame of the conventional forward-feed type into the “tightening type scaffold” as it is.

  The present invention has been made to solve such a problem, and can be used not only for “building frame type scaffolding” but also for “tightening type scaffolding”. The object is to provide a leading handrail frame. It is another object of the present invention to provide a method for forming a framework scaffold using the preceding handrail frame.

The present invention provides the following (1) to ( 6 ) leading handrail frame and ( 7 ) to (8) building frame type scaffolding and (9) to ( 10 ) binding type scaffolding About. Hereinafter, (1) to ( 10 ) may be collectively referred to as the present invention.

(1) A pre-handed handrail frame composed of a plurality of handrail pillars and at least one handrail material connecting the handrail pillars, wherein the handrail pillar is a bar-shaped work rail or a strut or diagonal material It has Azukeru entrusts fitting over the member, and the preceding handrail frame handrail material is characterized in that it is rotatably coupled to the handrail column.

  (2) The preceding handrail frame according to (1) above, wherein the handrail material is detachable from the handrail pillar.

  (3) The preceding handrail frame according to (1) or (2) above, wherein the handrail column has a fixing bracket for fixing the handrail column to the vertical column or the column.

  (4) The preceding handrail frame according to any one of the above (1) to (3), wherein the handrail column has a positioning bracket for fixing the handrail column to the vertical column or the column.

(5) Provided with a means for preventing the razor bracket provided on the handrail pillar from being removed from the bar-shaped member when it is applied to the bar-shaped member made of a handrail or a strut or diagonal material for work . The preceding handrail frame according to any one of (1) to (4) above.

(6) It is provided with a fall prevention means for preventing the handrail pillar from falling after the handrail provided on the handrail pillar is assigned to the work handrail or the bar-like member made of striation or diagonal material. The preceding handrail frame according to any one of (1) to (5) above.

(7) A method of forming a building-frame-type frame scaffold using the preceding handrail frame according to any one of (1) to (6) above, wherein the handrail column of the preceding handrail frame is used as a vertical column of the building frame. After attaching the preceding handrail frame between the vertical pillars of the building frame that are erected adjacently by fixing, the work is installed horizontally or diagonally with one handrail pillar of the preceding handrail frame removed from the vertical pillar After temporarily placing it on a bar-shaped member made of a handrail or a streak, remove the other handrail column of the preceding handrail frame from the vertical column, and then carry it to the vertical column of the building frame that constitutes the upper scaffold. Then, a handrail column temporarily placed on the rod-shaped member is carried and fixed to the vertical column of the other building frame that constitutes the upper scaffold, and a building frame type frame scaffold is formed. how to.

(8) A method of forming a building-frame-type frame scaffold using the preceding handrail frame of any one of (1) to (6) above by a forward feed method, wherein the handrail column of the preceding handrail frame is used as a vertical column of the building frame. After attaching the preceding handrail frame between the vertical pillars of the building frame that are erected adjacently by fixing, the work is installed horizontally or diagonally with one handrail pillar of the preceding handrail frame removed from the vertical pillar After temporarily placing it on a bar-shaped member made of a handrail or a streak, remove the other handrail column of the preceding handrail frame from the vertical column, and then carry it to the vertical column of the building frame that constitutes the upper scaffold. After that, the handrail column temporarily placed on the rod-shaped member is transported and fixed to the vertical column of the other building frame that constitutes the upper scaffold, and the work handrail is further interposed between the adjacent building frames. A method of forming a building-framework scaffold, characterized by attaching a frame.

( 9 ) A method for forming a tight-framed scaffold using the preceding handrail frame of any one of (1) to (6) above by a forward feed method, wherein the handrail column of the preceding handrail frame is adjacent to the column by fixing it. After attaching the leading handrail frame between the standing pillars, the bar-shaped member made of the handrail or the diagonal member is installed horizontally or obliquely by removing one of the handrail pillars of the preceding handrail frame from the pillar. after temporarily entrusts above, send fixed has a post that constitutes the anchorage on one stage and the other handrail pillars of the preceding handrail frame and disconnect from the strut, then handrail column that was tentatively entrusts on the rod-like member A method for forming a tight-framework scaffold, characterized in that the frame is carried and fixed to the other strut that constitutes the scaffold one step above.

( 10 ) A method of forming a tight-framed scaffold using the preceding handrail frame of any one of the above (1) to (6) by a forward feed method, wherein the handrail pillar of the preceding handrail frame is adjacent to the column by fixing it. After attaching the leading handrail frame between the standing pillars, the bar-shaped member made of the handrail or the diagonal member is installed horizontally or obliquely by removing one of the handrail pillars of the preceding handrail frame from the pillar. after temporarily entrusts above, send fixed has a post that constitutes the anchorage on one stage and the other handrail pillars of the preceding handrail frame and disconnect from the strut, then handrail column that was tentatively entrusts on the rod-like member A method of forming a tight-framework scaffold, characterized in that the work frame is carried and fixed to the other strut constituting the one-stage scaffold, and a work handrail is attached between the adjacent struts.

  According to the present invention, it is possible to provide a forward-feed type handrail frame that is resistant to impact and is not affected by rust or foreign matter adhesion. Further, using this leading handrail frame, not only “building frame type scaffolding” but also frame scaffolding by “tightening type scaffolding” can be assembled without taking time and effort.

  The advance type handrail frame according to the present invention and a method of forming a frame scaffold using the preceding handrail frame will be described with reference to the drawings.

  FIG. 1 is an example of a advance-type preceding handrail frame according to the present invention. (a) is a front view, (b) is a right side view.

The preceding handrail frame 1 includes two handrail pillars 2 and two handrail members 3 that connect the two handrail pillars 2. The both ends of the handrail member 3 are bored mounting holes (not shown), by multiplying the handrail member rotating bracket 6 provided with the mounting hole in the handrail column 2, fulcrum handrail member rotating fitting 6 As a result, each handrail material 3 is rotatable in a direction perpendicular to the handrail column 2. The details of the handrail rotating metal fitting will be described later.

  The handrail column 2 is provided with two hand brackets 5 having a shape that allows the handrail column 2 to be disposed on a bar-like member (not shown). When the preceding handrail frame 1 is moved forward to the scaffold one step higher, first, one handrail pillar 2 is first lifted, and a working bracket 5 provided on the handrail pillar 2 is provided between the building frames or between the columns. It is placed on a bar-shaped member such as a handrail or diagonal material. Accordingly, it is preferable that the rake metal 5 is provided with a detachment prevention means so that the handrail column 2 is not detached from the bar-shaped member after the handrail column 2 is placed on the bar-shaped member by the rake metal 5. Moreover, it is preferable that the handrail column is provided with a fall prevention means so that the handrail column does not fall after the handrail column 2 is placed on the rod-like member by the hand bracket 5. Details of the Azuki metal fitting will be described later.

  Further, here, the handrail pillar 2 includes a fixing bracket 10 and a positioning bracket 8. The fixing bracket 10 may be provided on the handrail column 2 in advance, but a separate bracket may be used, and is used when the handrail column 2 is fixed to the vertical column of the building scaffold or the column of the binding type scaffold. be able to. The positioning bracket 8 has a function as a guide for fixing the handrail column 2 to the vertical column of the building scaffold or the column of the binding type scaffolding and the function of complementing the fixing bracket, and is used together with the fixing bracket 10. Is preferred. Details of the fixing bracket and the positioning bracket will be described later.

  In this example, two handrail members 3 are used, but this may be one or three or more. The length of the handrail material is determined by the distance between adjacent building frames when used in a building frame scaffold, and is determined by the distance between adjacent columns when used in a binding scaffold. It is preferable to use a pipe material for the handrail column, and it is desirable to use a steel pipe having an outer diameter of 34.0 mm or more. The length of the handrail material may be fixed in advance.

  FIG. 2 shows an example of a handrail material rotating metal fitting for allowing the front end of the handrail material to be hung on a handrail column and rotating in the vertical direction.

  (a) is a so-called “spring-type gravity lock”, and the claw portion 12 is urged outward by a spring. Therefore, after the mounting hole drilled at the tip of the handrail material is hung on the handrail material rotating bracket, Unless the nail | claw part 12 is pushed inward, a handrail material does not remove | deviate.

  (b) is a so-called “free fall type gravity lock” and has a claw portion 12 as in (a), but is not biased by a spring. However, since the claw portion 12 hangs downward due to gravity, the handrail material will not come off unless the claw portion 12 is pushed inward after the mounting hole drilled at the handrail material tip is hung on the handrail material rotating bracket. Absent.

  (c) is a pin (navel) 14 having a flat surface portion 13 at the tip, and the flat surface portion 13 can adopt a shape such as a rectangle, a polygon, an ellipse, or a circle. After the mounting hole pierced at the tip of the handrail material is hung on the handrail material rotating metal fitting, this plane portion interferes, and the handrail material is difficult to come off the metal fitting.

  As described above, the handrail material rotating metal fitting is for hanging the front end of the handrail material on the handrail pillar so as to be rotatable in the vertical direction, and is not limited to the metal fitting illustrated in FIG. Not only a structure in which the handrail material is not removed by opening and closing of the nail or the like, but also a special pin structure in which the handrail material is not removed unless the handrail material is rotated at a certain angle.

  In addition, although it is preferable to set it as the structure which can isolate | separate a handrail pillar and a handrail material, the structure which cannot be separated may be sufficient. The structure in which the handrail pillar and the handrail material can be separated has an advantage that the handrail pillar and the handrail material can be transported separately as shown in FIG. Here, (a) is the handrail pillar 2, and (b) is the handrail material 3.

  In order to achieve a structure in which the handrail pillar and the handrail material can be separated, it is preferable that the attachment holes 11 formed at both ends of the handrail material 3 be detachable from the handrail pillar 2.

  As the material of the handrail material, it is preferable to use a pipe material, and it is desirable to use a steel pipe having an outer diameter of 27.2 mm or more. Both ends of the tube material can be crushed and flattened, and mounting holes can be made in the flat plate. The shape of the mounting hole may be circular, but may be oval or polygonal depending on the shape of the handrail material rotating metal fitting. When an oval or polygonal hole is employed, the handrail can be removed when the handrail is rotated at a certain angle. Alternatively, a shape that allows the handrail material to be removed when a specific operation is performed, such as a keyhole shape, may be employed.

FIG. 4 illustrates various shapes employed in the mounting hole provided at the tip of the handrail material.
(a) is a circle, (b) is an oval, (c) is a rhombus, (d) is a rectangle, (e) is a triangle, and (f) and (g) are keyhole shapes.

  Next, the Azuki metal fitting will be described. As described above, the handrail column is provided with a metal fitting having a shape that allows the handrail column to be placed on a bar-shaped member such as a work handrail or a diagonal member. It is only necessary that the metal fittings can be temporarily arranged in a state where the handrail pillar is set up on the bar-like member, and at least one handrail pillar is necessary. From the viewpoint of preventing the handrail pillar from falling, it is preferable to provide two. Further, it is preferable that the handrail member is not detached from the bar-shaped member after being placed on the bar-shaped member.

  FIG. 5 shows an example of a side bracket used when two top and bottom side brackets are provided on a handrail post. These are diverted grips used for scaffold boards (cloth boards).

  (a) is an example of using a razor bracket with a drop lock on both the top and bottom, (b) is a combination of a drop lock only on the upper rake bracket, and (c) is a drop lock only on the lower rake bracket. (D) and (d) are examples in which the upper and lower two parts are used with razor brackets without a drop lock.

  In this case, when the falling lock 79 is incorporated in one or both of the rivet fittings, it is possible to prevent the handrail member from being detached from the rod-shaped member after being placed on the rod-shaped member. Such a detachment prevention function can be imparted by using a special mechanism such as a spring instead of using a falling lock, or by crafting the shape of a lacquer fitting.

  FIG. 6 is an example in which a detachment prevention function is provided by crafting the shape of the lacquer fitting. The azuke metal fitting 5 has an opening 80 in the shape of embracing a rod-shaped member (not shown). The width of the opening 80 is widened so that the entrance is wide and the back is narrowed. It becomes possible to make it difficult to remove the member. Here, the upper and lower two side fittings are provided on the handrail post 2 and both the side fittings have a wide opening at the entrance and a depth at the bottom, but only one side fitting is like this. The shape may be good, and there may be only one izuke metal fitting.

  FIG. 7 is an example of a razor fitting provided with the azuma fitting 5 rotatably with respect to the handrail column 2. (a) is the state of the handrail pillar mounting bracket when assembling the scaffolding, and (b) is the state of the handrail mounting bracket when transporting the handrail pillar.

  At the time of assembling the scaffold of (a), the rod-shaped member 5 is clamped by its own weight after the rod-shaped member (not shown) is embraced in the metal frame 5, so that the rod-shaped member that is embraced cannot be easily removed. It becomes possible. Here, the upper and lower two side fittings are provided on the handrail column 2 and both of the side fittings are provided so as to be rotatable with respect to the handrail column 2. However, only one side fitting may be rotatable. In addition, there may be one ledge metal fitting. In addition, when the azuma bracket 5 is provided so as to be rotatable with respect to the handrail pillar 2, the razor bracket 5 is housed and compact when transported, as shown in FIG. , Can improve the transport efficiency.

  Further, FIG. 8 is a modification of the rake metal fitting shown in FIG. 7, and since the tip shape of the rake metal fitting 5 extends to form a hook shape, it is held in the rake metal fitting of the handrail pillar when assembling the scaffolding. The rod-shaped member is more difficult to come off.

  The example in which the detachment prevention function is provided on the metal fitting itself has been described above, but the detachment prevention function may be provided on the main body of the handrail pillar.

  FIG. 9 is an example in which a spring-type pin 81 is provided on the main body of the handrail pillar 2 to provide a detachment preventing function.

  A spring-type pin 81 urged rightward by a spring is provided on the main body of the handrail pillar. When assembling the scaffold, the spring-type pin 81 provided on the handrail post is moved to the left, and a bar-shaped member (not shown) is held in the ledge 5 and then the spring-type pin 81 is released to release the spring. Since the expression pin moves to the right, the embraced rod-shaped member cannot be removed. In this example, the upper and lower two side fittings are provided on the handrail post 2 and the spring-type pins are installed below both of the side fittings. However, they may be installed only under one side fitting, There may be one Azuki metal fitting.

  As described above, it is preferable to provide a detachment prevention function for the razor bracket. However, when two or more arbor fittings having a detachment prevention function are provided on one handrail column, the handrail column is attached to the bar-shaped member by the bracket. The function that the handrail column is difficult to fall after being placed on top is also provided.

  It is preferable to provide such a function to prevent the handrail pillar from falling over to the azuke metal fittings. As another method for providing a fall prevention function, it is also possible to give a portion having a shape for embedding a rod-shaped member (not shown) of the lacquer metal fitting to form a bowl shape.

  Next, the fixing bracket and the positioning bracket will be described.

  The fixing bracket is used when the handrail column is fixed to the vertical column of the building frame scaffolding or the column of the binding type scaffolding, and may be incorporated in the handrail column in advance or separately prepared. It can also be attached to a pillar. The fixing bracket is not particularly limited as long as it can directly fix the handrail column to the vertical column of the building scaffold or the support column of the binding type scaffold, and examples thereof include a commonly used fixing bracket such as a clamp. Moreover, when fixing a handrail pillar to the support | pillar of a binding type scaffold, it can also fix using the attachment member (top) of a support | pillar material. The type of the fixing bracket is not particularly limited, but the handrail column of the preceding handrail frame can be firmly fixed to the vertical column of the building frame scaffolding or the column of the binding type scaffolding, and can be easily removed when dismantling the frame scaffolding It preferably has a structure and its mounting position does not interfere with the assembly and disassembly of the frame scaffold.

  FIG. 10 illustrates various fixing brackets that can be used when a handrail column is fixed to a vertical column of a building frame scaffolding or a column of a binding type scaffolding. (a) is a fixing bracket using a clamp, and (b) and (c) are frame-based fixing brackets.

  When the clamp 85 of (a) is used, the vertical column 35 of the building scaffold or the column 4 of the binding type scaffold and the handrail column 2 are fixed with the clamp 85. (b) and (c) are fixed using the frame 22 of the support column 4 of the tight-binding scaffold. (b) After inserting the U-shaped fitting 86 provided on the handrail post 2 from the side into the frame, the wedge 87 is driven and fixed so as to penetrate the frame 22 and the U-shaped fitting 86 from above. (C) is to fix the metal fitting 88 having a downward projection provided on the handrail pillar 2 by placing it on the top and then fastening a retaining pin 89 to the bottom of the top 22 It is.

  The positioning bracket is not necessarily required, but when the positioning bracket is provided on the handrail column, it can serve as a guide when fixing the handrail column to the vertical column of the building frame scaffolding or the column of the binding type scaffolding. . Further, in the case of only the fixing metal fitting, bending stress may be generated, but at that time, it can play a role of preventing the handrail pillar from rotating. When the fixing bracket is solid, it is not necessary to install a positioning bracket.

  The positioning metal fitting may be incorporated in the handrail pillar in advance, or may be separately attached to the handrail pillar. As a positioning metal fitting, it may be applied directly to the vertical column of the building frame scaffolding or the column of the binding type scaffolding, or may be applied to or inserted into the support member (top) of the column material in the binding type scaffolding.

  FIG. 11 illustrates various positioning brackets that can be used as a guide when a handrail column is fixed to a vertical column of a building frame scaffolding or a column of a binding type scaffolding. (a) is a positioning bracket using a contact material, and (b) and (c) are positioning brackets using frames.

  The positioning metal fitting using the contact material of (a) is positioned by directly applying the curved contact material 90 to the vertical column of the building frame scaffolding or the column of the binding type scaffolding. (b) and (c) are for positioning using the top 22 of the support 4 of the tight-binding scaffold. (b) is for positioning the tip of the inverted U-shaped positioning fitting 91 provided on the handrail column 2 by covering the top of the frame from the lateral direction, and (c) is provided on the handrail column 2. The positioning fitting 92 having a downward projection is positioned by placing it on the frame.

  Next, a method for forming a frame scaffold using the advance-type advance handrail frame according to the present invention will be described.

  FIGS. 12 and 13 are schematic diagrams showing an operation of sequentially assembling a tightly-fitting frame scaffold from below using a forward-feed type handrail frame.

  12 (a) to 12 (c) show a procedure for forming the lowermost type scaffolding.

  (a) is a state in which the lowermost type scaffold is formed. The assembly procedure of the lowermost scaffold is the same as the procedure shown in FIG. One strut 4 is formed by vertically connecting the strut members 16 provided with the tops 22, and arm arms (not shown) are provided between the struts (not shown) on the building side and the struts 4 on the opposite side of the building. Z)) and the column 4 is self-supporting. Thereafter, the scaffold board (cloth board) 51 is bridged on the adjacent arm wood, and the work rails 15 are attached to the work pillars 15 adjacent to each other on the scaffold board 51 by two each, A one-stage tight scaffolding is formed.

  In this case, the work without the work handrail 15 attached is unavoidable, but there is no safety problem because it is the lowest stage and the height of the scaffolding plate is as low as 2 m or less.

  (b) shows an operation of attaching the advance handrail frame of the forward feeding method according to the present invention. The worker 20 is about to lift the right handrail column 2 after fixing the left one of the two handrail columns 2 constituting the preceding handrail frame 1 to the left column 4. In addition, when fixing the left one of the handrail pillar 2 to the left support column 4, if the right handrail pillar 2 is placed on the work handrail 15, the left one of the handrail pillar 2 is fixed. The work of fixing to the left column 4 can be performed easily.

  (c) is where the operator 20 lifts the right handrail column 2 out of the two handrail columns 2 constituting the preceding handrail frame 1 and fixes it to the right column 4. Thus, the worker 20 has advanced the preceding handrail frame from the lowermost scaffold to the upper scaffold.

  Next, the worker will form the upper scaffold, but in the same way as the bottom scaffold, the strut member with the top is added vertically to extend the strut, Is attached to the support column 4 and the scaffolding board (fabric board) on the upper level is bridged on the adjacent arm wood to form the scaffolding on the upper level, and then stands on the scaffolding board on the upper level. . At this time, since the preceding handrail frame that is postponed from the lower footing is installed in the upper scaffold, the worker attaches one end of a safety belt (not shown) to the handrail material of the handrail frame, By attaching the other end to your waist, you can prevent falling.

  (D) to (f) of FIG. 13 show a procedure for further feeding the preceding handrail frame to the scaffold one level higher.

  (d) shows that the worker 20 standing on the scaffold one level above has a separately prepared work handrail 15 between adjacent struts 4 at substantially the same position as the handrail material 3 constituting the preceding handrail frame 1. After attaching the books one by one, of the two handrail pillars 2 constituting the preceding handrail frame 1, one on the right side is removed from the right pillar 4 and lifted to be put on the work handrail 15.

  In (e), after confirming that the right handrail column 2 is securely attached to the work handrail 15, the worker 20 removes the left handrail column 2 from the left column 4 and lifts it up. This is where the left column 4 is being fixed.

  In (f), the worker 20 has just lifted the right handrail column 2 that was assigned to the work handrail 15 and fixed it to the right support column 4. After that, the same procedure will be repeated.

  The above describes the method of sequentially assembling the tight-working frame scaffold from the bottom using the advance-type preceding handrail frame according to the present invention, but the building-frame-type framework scaffold is sequentially used using the advance-type preceding handrail frame. The same applies to the assembly from the bottom. When building frame-type frame scaffolds sequentially from the bottom, the vertical columns of the building frame such as the torii frame and H frame are added vertically instead of adding the column members vertically to form one column. In addition to suspending the scaffolding board (cloth board) on the arm timber, the scaffolding board is built on the side rail of the building frame, and the handrail pillar of the preceding handrail frame that has been advanced is built instead of the column. It is different that it is fixed to the vertical column of the frame.

  According to the present invention, it is possible to provide a forward-feed type advance handrail frame that is resistant to impact and is not affected by rust or deposits. Also, using this leading handrail frame, not only “building frame type scaffolding” but also framed scaffolding by “tightening type scaffolding” can be assembled without much effort.

It is an example of the advance-type advance handrail frame which concerns on this invention. (a) is a front view, (b) is a right side view. The handrail material rotation metal fitting for making the front-end | tip of a handrail material hung on a handrail pillar, and enabling it to rotate to a perpendicular direction is illustrated. The state which separated the handrail pillar and the handrail material is shown. The various shapes employ | adopted as the attachment hole provided in the front-end | tip of a handrail material are illustrated. An example of a side bracket used when two upper and lower side brackets are provided on a handrail post will be described. This is an example in which a detachment prevention function is provided by crafting the shape of the azusa metal fittings. This is an example of a razor bracket provided with a razor bracket 5 rotatably with respect to the handrail column 2. It is a modification of the marquetry metal fitting shown in FIG. This is an example in which a spring-type pin 14 is provided on the main body of the handrail column 2 to provide a detachment prevention function. Various fixing brackets are illustrated. Various positioning brackets are illustrated. The procedure for forming the bottom-stage binding scaffold among the operations of sequentially assembling the binding-type frame scaffold from below using the advance-type advance handrail frame according to the present invention will be described. The procedure for pre-feeding the advance-type advance handrail frame according to the present invention to the scaffold one step above is shown. It is a schematic diagram which shows the operation | work which assembles a frame scaffold one by one from the bottom using the torii-shaped building frame which has a horizontal rail in the upper part, and the stationary handrail frame of a stationary system. (a) is a front view of the framework scaffold and (b) is a right side view of the framework scaffold. The work procedure at the time of attaching the stationary type handrail frame to the building frame is shown. (a) is a front view of the installation work, (b) is a right side view of the installation work. It is a schematic diagram which shows the operation | work which assembles a frame scaffold one by one from the bottom using the H-shaped H frame which has a horizontal cross in an intermediate part, and the stationary handrail frame of a stationary system. (a) is a front view of the framework scaffold and (b) is a right side view of the framework scaffold. FIG. 5 is a schematic diagram showing an operation of sequentially assembling a frame scaffold from below using a torii-shaped building frame having a horizontal rail at the upper part and a forward-handed advance handrail frame described in Patent Document 1; (a) is a front view of the framework scaffold and (b) is a right side view of the framework scaffold. An example of the structure of a tight-binding scaffold is shown. (a) is a front view of a binding type scaffold, (b) is an enlarged view of the periphery of a mounting member (frame), and (c) is a right side view of the binding type scaffold.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Leading handrail frame 2 Handrail pillar 3 Handrail material 4 Prop 5 Azuki metal fitting 6 Handrail material rotating metal fitting 7 Upper fixing metal fitting 8 Positioning metal fitting 9 Lower fixing metal fitting 10 Fixing metal fitting 11 Mounting hole 12 Claw part 13 Plane part 14 Pin 15 Work handrail 16 Column member 17 Column on the building side 18 Column on the opposite side of the building 19 Diagonal material 20 Worker 21 Arm lumber 22 Frame 33 H frame 34 Horizontal beam 35 Vertical column 40 Building 41 Stiff 42 Lower handrail frame for lower scaffolding 43 Below Building scaffolding for lower scaffolding 44 Horizontal scaffolding for lower scaffolding 45 Vertical column for lower scaffolding 51 Scaffolding plate 52 Leading handrail frame for current scaffolding 53 Building frame for current scaffolding 54 Horizontal scaffolding for current scaffolding 55 Current scaffolding Vertical column 62 Upper handrail frame for upper scaffold 63 Upper handrail frame 64 Lower handrail frame 70 Safety belt 71 Advance-type advance handrail frame described in Patent Literature 1 72 Advance delivery described in Patent Literature 1 Handrail pillar of the advance handrail frame of No. 73 Handrail material of the advance-type advance handrail frame described in Patent Document 1 79 Drop lock 80 Opening portion 81 Spring type pin 85 Clamp 86 U-shaped metal fitting 87 Wedge 88 Downward projection Fixing bracket 89 Retaining pin 90 Curved patch 91 Reverse U-shaped positioning bracket 92 Positioning bracket with downward projection

Claims (10)

A forward-feed type advance handrail frame composed of a plurality of handrail pillars and at least one handrail material connecting the handrail pillars, and the handrail pillar is on a bar-shaped member made of a work handrail, a streak, or a diagonal material. A preceding handrail frame characterized by having a hand- jointed metal fitting and a handrail material rotatably connected to a handrail column.   The handrail frame according to claim 1, wherein the handrail material is detachable from the handrail pillar.   The preceding handrail frame according to claim 1 or 2, wherein the handrail column has a fixing bracket for fixing the handrail column to the vertical column or the column.   The preceding handrail frame according to any one of claims 1 to 3, wherein the handrail column has a positioning fitting for fixing the handrail column to the vertical column or the column. It is characterized in that it is provided with anti-detachment means for preventing the razor fitting provided on the handrail pillar from being removed from the bar-shaped member when it is applied to the bar-shaped member made of a handrail for work or striation or diagonal material. The preceding handrail frame according to any one of claims 1 to 4. It is provided with a fall prevention means for preventing the handrail column from overturning when the handrail provided on the handrail column is applied to a work handrail or a bar-like member made of a skewed or diagonal material. The preceding handrail frame in any one of Claim 1-5. It is a method of forming a building-frame-type frame scaffold using the preceding handrail frame according to any one of claims 1 to 6, and fixing a handrail column of the preceding handrail frame to a vertical column of the building frame. After attaching the preceding handrail frame between the vertical pillars of the building frame that are erected adjacent to each other, one of the handrail pillars of the preceding handrail frame is removed from the vertical pillar and the work handrail installed horizontally or diagonally or After temporarily placing it on a bar-shaped member consisting of a streak, remove the other handrail column of the preceding handrail frame from the vertical column, and then carry it to the vertical column of the building frame that forms the upper scaffold, and then fix it A method of forming a building-frame-type frame scaffold, characterized in that a handrail column temporarily placed on the rod-shaped member is carried and fixed to a vertical column of the other building frame that constitutes the scaffold one step above. It is a method of forming a building-frame-type frame scaffold using the preceding handrail frame according to any one of claims 1 to 6, and fixing a handrail column of the preceding handrail frame to a vertical column of the building frame. After attaching the preceding handrail frame between the vertical pillars of the building frame that are erected adjacent to each other, one of the handrail pillars of the preceding handrail frame is removed from the vertical pillar and the work handrail installed horizontally or diagonally or After temporarily placing it on a bar-shaped member consisting of a streak, remove the other handrail column of the preceding handrail frame from the vertical column, and then carry it to the vertical column of the building frame that forms the upper scaffold, and then fix it The handrail pillar that had been temporarily placed on the rod-shaped member is transported and fixed to the vertical pillar of the other building frame that constitutes the scaffold one step above, and the work handrail is attached between the adjacent building frames. A method of forming a building-framework scaffold characterized by: A method for forming a tight-framed scaffold using the preceding handrail frame according to any one of claims 1 to 6 in a forward-feed manner, wherein the handrail pillar of the preceding handrail frame is fixed to a support column in an adjacent manner. After attaching the preceding handrail frame between the installed pillars, remove one of the handrail pillars of the preceding handrail frame from the pillar and temporarily place it on a bar-shaped member made of work handrails or diagonal members installed horizontally or diagonally After allocating, remove the other handrail pillar of the preceding handrail frame from the pillar, and then carry it to the pillar constituting the upper scaffold, and then fix the handrail pillar that was temporarily placed on the rod-shaped member A method for forming a tight-framework scaffold, characterized in that the scaffold is carried and fixed to the other strut constituting the scaffold. A method for forming a tight-framed scaffold using the preceding handrail frame according to any one of claims 1 to 6 in a forward-feed manner, wherein the handrail pillar of the preceding handrail frame is fixed to a support column in an adjacent manner. After attaching the preceding handrail frame between the installed pillars, remove one of the handrail pillars of the preceding handrail frame from the pillar and temporarily place it on a bar-shaped member made of work handrails or diagonal members installed horizontally or diagonally After allocating, remove the other handrail pillar of the preceding handrail frame from the pillar, and then carry it to the pillar constituting the upper scaffold, and then fix the handrail pillar that was temporarily placed on the rod-shaped member A method of forming a tight-framework scaffold, characterized in that it is carried and fixed to the other strut constituting the scaffold, and a work handrail is attached between adjacent struts.

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