JP2005299300A - Slide type preceding handrail for prefabricated scaffold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide type preceding handrail for a prefabricated scaffold in which the preceding handrail arranged on the upper most rung of the prefabricated scaffold accommodates the scaffold having different scaffold distance by enlarging the extensible/contractible width. <P>SOLUTION: An upper horizontal member 12 and a middle horizontal member 15 are halved at their centers, respectively. One side of the halved upper horizontal member 12 is made to be a thick upper horizontal member 13 and the other side is made to be a thin upper horizontal member 14. The thin upper horizontal member 14 slidably fits into the thick upper horizontal member 13. One side of the halved middle horizontal member 15 is made to be a thick middle horizontal member 16 and the other side is made to be a thin middle horizontal member 17. The thin middle horizontal member 17 slidably fits into the thick middle horizontal member 16. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a handrail provided at the uppermost stage of a frame scaffold in order to prevent an operator from falling down when assembling / disassembling a frame scaffold used at a construction site or the like.

  The frame scaffold used at construction sites is a unit in which two gate-shaped building frames are connected by X-shaped braces and a cloth plate is placed between the horizontal beam pipes at the top of the building frame. This unit is connected to the left and right and up and down according to the width and height of the construction site to form a framework scaffold.

  Therefore, the brace that connects the building frame serves as a safety fence when working on a fabric board other than the top, but to prevent falling accidents when working while standing on the top fabric board, A leading handrail is provided.

  As such a handrail, utility model registration No. 3095790 discloses a pair of left and right vertical members, a horizontal member that connects the upper ends of the vertical members, and a lower support frame that is located below the horizontal member and connects the left and right vertical members. The handrail frame is configured with a pair of clamps at the left and right lower ends of the handrail frame, and the pair of clamps is attached to the building pipe of the frame of the frame scaffolding. The present inventor proposes that a latch is located on the side of the frame scaffolding and is attached to the building pipe from the clamp on the side without the latch. did.

  This handrail is not attached to all frame scaffold units, but only to the uppermost stage where no braces are installed. To rearrange (replace) the handrail to the upper level, hook the latch on the horizontal beam pipe at the top of the building frame of the frame scaffolding, and attach it to the building pipe from the clamp on the side without the latch. There is no need to lift the handrail unnecessarily high, and one operator can lift and fix the clamp by hand, so that a large number of hands are not required.

  Japanese Patent Laid-Open No. 2002-206336 discloses a handrail main body disposed between opposing vertical members of a scaffold building frame, and attached to both side ends of the handrail main body, to the transverse member of the scaffold building frame. A lock hook that can be freely engaged and disengaged and guide means that is provided at both end portions of the handrail main body and guides the handrail main body along the vertical members of the scaffolding frame are shown.

  This guide means has a plurality of brackets projecting from the top and bottom of the side end portion of the handrail body, and a pair of inner and outer guide plates are attached to each bracket so as to sandwich the vertical members of the scaffolding frame from the inner and outer sides. . The handrail body is configured to be extendable and contractible in the width direction.

  In this handrail, the handrail body is moved up and down by guide means that guides the building frame along the building pipe of the scaffolding frame, and the handrail is rearranged to the upper stage without removing the handrail. And the handrail main body is expanded and contracted in the width direction only at the beginning of inserting the handrail main body into the building pipe of the scaffolding frame and at the last removing.

  In Japanese Patent No. 2951274, in a handrail frame provided on one side or both sides of a scaffolding plate and spanning the horizontal fence of two opposing building frames, it is hung by gripping metal fittings provided at both ends between the building frames. A corner handrail frame is shown that includes a lower arm that is handed over and a grip that is slidably provided in order to finely adjust the length of at least one end of the lower arm.

This corner railing frame can be easily adapted to the scale even if the length and width dimensions of members such as scaffolding plates of the frame scaffolding are different.
Utility Model Registration No. 3095790 JP 2002-206336 A Japanese Patent No. 2951274

  In the prior art disclosed in the above-mentioned utility model registration No. 3095790, two workers are required for the first stage and the second stage in order to rearrange the handrail to the upper stage.

  Moreover, in the prior art shown by Unexamined-Japanese-Patent No. 2002-206336, the handrail main body is expanded-contracted in the width direction in order to insert a handrail main body into the building pipe of a building frame for scaffolds, and a scaffold space | interval differs. Can't deal with things. In addition, the structure becomes complicated.

  Moreover, in the prior art shown by patent 2951274, although it can respond | correspond to the thing from which a scaffold space | interval differs, it cannot be rearranged to an upper stage as a preceding handrail.

  Therefore, in the present invention, the expansion and contraction width can be increased to cope with different scaffold intervals, the work can be rearranged to the upper stage by one person work, the structure is simple and light weight, and the handrail is unnecessary when attaching and detaching. The object is to provide a sliding scaffolding handrail for the frame scaffolding that can be attached to the wife side without falling.

  The sliding scaffolding handrail of the frame scaffold according to the invention of claim 1 includes a pair of left and right vertical members 11, 41, upper horizontal members 12, 42 connecting the upper ends of the vertical members 11, 41, and an intermediate portion of the vertical members 11, 41. The intermediate horizontal members 15 and 45 connecting the rails constitute the handrail frames 10 and 40, and the upper horizontal members 12 and 42 and the intermediate horizontal members 15 and 45 are divided into two at the middle portion thereof, and the upper horizontal members 12 and One of the 42 is a thick upper horizontal member 13, 43 and the other is a thin upper horizontal member 14, 44. The thin upper horizontal member 14, 44 is slidably fitted into the thick horizontal member 13, 43 and divided into two. One of the intermediate horizontal members 15, 45 is a thick intermediate horizontal member 16, 46, and the other is a thin intermediate horizontal member 17, 47. The thin intermediate horizontal members 17, 47 are slidable on the thick intermediate horizontal members 16, 46. The lock bolts 19 and 49 are provided below the thin intermediate horizontal members 17 and 47 of the thick intermediate horizontal members 16 and 46. The lock bolts 19 and 49 are located above the cloth plate 3, and the lock bolts 19 and 49 are provided. The Fine slide of the intermediate horizontal members 17, 47 and thickness intermediate horizontal member 16, 46 by attaching eye is intended to be fixed.

  The sliding scaffolding handrail of the frame scaffold according to the invention of claim 2 is provided with a pair of lower holding metal parts 24 from the lower end of the vertical member 11, and hook metal fittings on one vertical member 11 from a predetermined distance above the lower end of the vertical member 11. 21 is provided with the upper holding metal 25 on the other vertical member 11, and the hook metal 21 is provided with a C-shaped hook notch 22 that fits outside the building pipe 2a of the frame scaffold 1 building frame 2. The metal fittings 24 and 25 are provided with U-shaped presser cutouts 26 that are fitted outside the building pipe 2a of the frame scaffold 1 and the frame 2, and the openings of the presser cutouts 26 are directed outward, The upper holding metal 25 is positioned above the crosspiece pipe 2b at the top of the building frame 2 of the frame scaffold 1.

  The slide type advance handrail of the frame scaffold according to the invention of claim 3 is such that the opening 23 of the hook notch 22 in the hook hardware 21 faces the outside of the frame scaffold 1.

  According to the fourth aspect of the present invention, the frame type scaffolding slide type handrail is provided with a pair of lower pressers 51 from the lower end of the vertical member 41, and a pair of upper pressers 52 from above the lower end of the vertical member 41 by a predetermined distance. Provided in the presser fittings 51, 52 are U-shaped presser cutouts 53 that fit on the outside of the building pipe 2a of the frame scaffolding 1 building frame 2, and the opening portions of the presser cutouts 53 are directed outwardly and upward. The presser metal fitting 52 is positioned above the crosspiece pipe 2b at the top of the building frame 2 of the frame scaffold 1 and the presser cutouts 53 of the presser metal fixtures 51 and 52 are positioned inward from the vertical member 41.

  According to the invention of claim 1, the upper horizontal members 12, 42 and the intermediate horizontal members 15, 45 are divided into two at the middle portion, and one of the two divided upper horizontal members 12, 42 is replaced by a thick upper horizontal member 13, 43, and the other is the fine horizontal members 14, 44. The fine horizontal members 14, 44 are slidably fitted into the thick horizontal members 13, 43, and one of the divided intermediate horizontal members 15, 45 is The thick intermediate horizontal members 16 and 46 are used, the other is the thin intermediate horizontal members 17 and 47, and the thin intermediate horizontal members 17 and 47 are slidably fitted into the thick intermediate horizontal members 16 and 46. 44 fits almost completely into the upper horizontal members 13 and 43, and the thin intermediate horizontal members 17 and 47 fit almost completely into the thick intermediate horizontal members 16 and 46. Can also respond. In addition, since it can be carried in a reduced size, it can be handled easily, has a small storage space and is low in transportation cost.

  Further, by providing lock bolts 19 and 49 below the thick intermediate horizontal members 16 and 46 on the thin intermediate horizontal members 17 and 47 side and tightening the lock bolts 19 and 49, the thin intermediate horizontal members 17 and 47 and the thick intermediate horizontal member Since the slides of 16 and 46 are fixed, one hand can hold the vertical members 11 and 41 and the other hand can tighten the lock bolts 19 and 49. 1 can be attached. Further, since the lock bolts 19 and 49 are positioned above the cloth plate 3, the lock bolts 19 and 49 can be loosened from the stage where the handrail frames 10 and 40 are attached. It can be removed from the framework scaffold 1.

  According to the second aspect of the present invention, the hook metal 21 is provided on one vertical member 11 and the upper holding metal 25 is provided on the other vertical member 11 from above the lower end of the vertical member 11. A C-shaped hook notch 22 that fits outside the building pipe 2a of the scaffold 1 building frame 2 is provided, and the hook metal 21 and the upper holding metal 25 are from the horizontal beam pipe 2b at the top of the building frame 2 of the frame scaffold 1 Since the handrail frame 10 can be slid after the hook hardware 21 is first hung on the building pipe 2a above the crosspiece pipe 2b in order to be positioned above, the handrail frame 10 can be safely attached to the frame scaffold 1 alone. be able to.

  Also, a pair of lower presser fixtures 24 are provided from the lower end of the vertical member 11, and a hook fixture 21 is attached to one vertical member 11 from the lower end of the vertical member 11, and an upper presser fixture is provided to the other vertical member 11. 25 is provided, and the hook hardware 21 is provided with a C-shaped hook notch 22 that fits outside the building pipe 2a of the frame scaffolding 1 building frame 2, and the holding brackets 24 and 25 are provided with the frame scaffolding 1 building frame 2 A U-shaped presser cutout 26 is provided on the outer side of the building pipe 2a. The opening of the presser cutout 26 is directed outward, and the hook metal 21 and the upper presser metal 25 are the building frame 2 of the frame scaffold 1 Since the handrail frame 10 is slid and fixed with the lock bolt 19 so as to be positioned above the top crosspiece pipe 2b, the handrail frame 10 is fixed to the building pipe 2a with the hook hardware 21 and the holding hardware 24, 25. Is securely attached to the frame scaffold 1, and the structure is simple and can be reduced in weight.

  According to the invention of claim 3, since the opening 23 of the hook notch 22 in the hook hardware 21 is directed to the outside of the frame scaffold 1, it can be dropped carelessly when the handrail frame 10 is attached or removed. Absent.

  According to the invention of claim 4, the presser fittings 51, 52 are provided with U-shaped presser cutouts 53 that fit outside the building pipe 2 a of the frame scaffold 1 building frame 2. Since the notch 53 is positioned inward from the vertical member 41, the vertical member 41 is positioned outside the building pipe 2a, so that the handrail frame 40 can be attached to the wife side of the frame scaffold 1 as well.

  In addition, a pair of lower pressers 51 are provided from the lower end of the vertical member 41, and a pair of upper pressers 52 are provided from above the lower end of the vertical member 41 by a predetermined distance. U-shaped presser cutouts 53 are provided on the outer side of the building pipe 2a of the frame 2, the openings of the presser cutouts 53 are directed outward, and the upper presser fitting 52 is the top of the building frame 2 of the frame scaffold 1 The handrail frame 40 is slid and fixed with the lock bolt 49 so that the handrail frame 40 is fixed to the building pipe 2a by the presser hardware 51 and 52 so that the handrail frame 40 is fixed to the frame scaffold 1 It is securely attached and the structure is simple and light.

  The upper horizontal members 12 and 42 and the intermediate horizontal members 15 and 45 are divided into two parts at the middle part for the purpose of increasing the expansion / contraction width to accommodate different scaffold intervals. One of 12 and 42 is a thick upper horizontal member 13 and 43, and the other is a thin upper horizontal member 14 and 44. The thin upper horizontal members 14 and 44 are slidably fitted into the thick upper horizontal members 13 and 43, and two One of the divided intermediate horizontal members 15, 45 is a thick intermediate horizontal member 16, 46, the other is a thin intermediate horizontal member 17, 47, and the fine intermediate horizontal members 17, 47 slide on the thick intermediate horizontal member 16, 46. Realized by freely fitting.

  FIG. 1 shows a leading handrail 10 attached to a frame scaffold 1. The frame scaffold 1 has a plurality of gate-shaped building frames 2 erected in parallel, and the building frames 2 are connected by braces 4. A cloth plate 3 is placed between the tops of the building frame 2 to form a scaffold for the operator.

  The building frame 2 is provided with a pair of building pipes 2a parallel to the vertical direction and a horizontal crosspiece pipe 2b connecting between the tops of the building pipes 2a. The distance between the pair of building pipes 2a of the building frame 2 is 1219 mm, but there are 914 mm and 610 mm. The interval between the building pipes 2a is the interval on the wife side of the frame scaffold 1. Although the interval arranged on the girder side of the building frame 2 shows a standard state of 1829 mm, there are other types of 1524 mm and 1219 mm depending on the brace.

  The handrail frame 10 as the preceding handrail of the first embodiment is provided with a pair of left and right vertical members 11, an upper horizontal member 12 that connects the upper ends of the vertical members 11, and an intermediate horizontal member 15 that connects an intermediate portion of the vertical members 11. . In the embodiment, the length of the vertical member 11 is about 140 cm, and the distance between the pair of left and right vertical members 11 in the standard state attached to the interval between the standard building frames 2 is 1,560 mm.

  The vertical member 11 is bent in two opposite directions in the middle part and the middle part of the lower half in the side view, and the upper part of the vertical member 11 attached to the building pipe 2a is the lower part. It is designed to be inside so as not to interfere with the brace 4.

  The upper horizontal member 12 is divided into two at the intermediate portion, and one of the two divided upper horizontal members 12 is a thick upper horizontal member 13 and the other is a thin upper horizontal member 14. Hereinafter, for the sake of convenience, the description will be made assuming that the thick horizontal member 13 side is on the left and the fine upper horizontal member 14 side is on the right.

  The left vertical member 11 and the thick upper horizontal member 13 are integrally formed by bending a round tube inward by 90 degrees. In the embodiment, the vertical member 11 and the thick horizontal member 13 are round steel pipes having an outer diameter of 35 mm and a wall thickness of 1.5 mm, and the length from the center of the left vertical member 11 to the tip of the thick upper member 13. Was 930 mm.

  The upper part of the right vertical member 11 is bent inward by 90 degrees, and a thin upper horizontal member 14 is welded to the end. The outer diameter of the fine upper horizontal member 14 is smaller than the inner diameter of the thick upper horizontal member 13, and the fine upper horizontal member 14 is slidably fitted into the thick upper horizontal member 13. In the embodiment, the fine upper horizontal member 14 is a round steel pipe having an outer diameter of 30 mm and a wall thickness of 1.5 mm, and the length from the center of the right vertical member 11 to the tip of the fine upper horizontal member 14 is 930 mm. That is, in the standard state, the thin upper horizontal member 14 fits into the thick upper horizontal member 13 by 300 mm.

  The intermediate horizontal member 15 is divided into two at the intermediate portion, and one of the divided intermediate horizontal members 15 is a thick intermediate horizontal member 16 and the other is a thin intermediate horizontal member 17. Similarly, the thick intermediate horizontal member 16 side will be described as the left, and the thin intermediate horizontal member 17 side will be described as the right.

  A thick intermediate horizontal member 16 is horizontally welded from the vertical intermediate portion of the left vertical member 11 to the inside. In the embodiment, the thick intermediate horizontal member 16 is a round steel pipe having an outer diameter of 35 mm and a wall thickness of 1.5 mm, and the length from the center of the left vertical member 11 to the tip of the thick intermediate horizontal member 16 is 930 mm.

  A thin intermediate horizontal member 17 is horizontally welded from the vertical intermediate portion of the right vertical member 11 to the inside. The outer diameter of the fine intermediate horizontal member 17 is smaller than the inner diameter of the thick intermediate horizontal member 16, and the thin intermediate horizontal member 17 is slidably fitted into the thick intermediate horizontal member 16. In the embodiment, the thin intermediate horizontal member 17 is a round steel pipe having an outer diameter of 30 mm and a wall thickness of 1.5 mm, and the length from the center of the right vertical member 11 to the tip of the thin intermediate horizontal member 17 is 930 mm. In other words, in the standard state, the thin intermediate horizontal member 17 fits into the thick intermediate horizontal member 16 by 300 mm.

  The left thick horizontal member 13 and the thick middle horizontal member 16 were parallel and the distance between them was 630 mm. Further, the fine upper horizontal member 14 and the fine intermediate horizontal member 17 on the right side were parallel to each other, and the distance between them was also 630 mm. The fine upper horizontal member 14 and the fine intermediate horizontal member 17 were inserted into the thick upper horizontal member 13 and the thick intermediate horizontal member 16 by 460 mm from the standard state. Therefore, the interval 1,560 mm of the vertical members 11 in the standard state is reduced to 1,100 mm, and the vertical frame 11 is attached to the building frame 2 having an interval of 1524 mm.

  A locking stopper 31 is fitted at the tip of the thin intermediate horizontal member 17, and a wire rope 32 is provided through the locking stopper 31, the thick intermediate horizontal member 16, and the left vertical member 11. Wire lock sleeves 33 are provided at both ends of the wire rope 32 so that the wire rope 32 does not fall out of the locking material 31 or the vertical material 11. The length of the wire rope 32 is set such that the fine intermediate horizontal member 17 does not fall out of the thick intermediate horizontal member 16.

  A vertical tether 18 that connects the thick horizontal member 13 and the thick middle member 16 in the vertical direction is provided. The vertical connecting member 18 is positioned between the pair of left and right vertical members 11 in the standard state, and is welded to the thick upper horizontal member 13 and the thick intermediate horizontal member 16.

  A lock bolt 19 is provided below the vertical intermediate member 18 on the thin intermediate horizontal member 17 side of the thick intermediate horizontal member 16. The lock bolt 19 is provided with an upward screw so that it can be easily turned from below, and when the lock bolt 19 is tightened, the tip of the lock bolt 19 comes into contact with the fine intermediate horizontal member 17, and the slide of the fine intermediate horizontal member 17 and the thick intermediate horizontal member 16 is Fixed.

  Although the lock bolt 19 is tightened from the lower stage, the lock bolt 19 is positioned above the cloth plate 3 so that the lock bolt 19 can be loosened from the stage where the handrail frame 10 is attached.

  A pair of lower presser fittings 24 are provided from the lower end of the vertical member 11. The presser foot 24 is a plate provided horizontally outward from the lower end of the vertical member 11, and the presser foot 24 has a U-shaped presser notch 26 that fits outside the building pipe 2 a of the frame scaffold 1 building frame 2. The openings of the pressing notches 26 are directed outward, and the building pipe 2a and the lower part of the vertical member 11 are aligned in a straight line.

  A hook metal member 21 is provided on one vertical member 11 and a presser metal member 25 on the upper side is provided on the other vertical member 11 from above the lower end of the vertical member 11 by a predetermined distance. For the sake of convenience, the hook hardware 21 side will be described as the left and the upper pressing metal hardware 25 will be described as the right. In the embodiment, the hook metal 21 and the presser metal 25 are 370 mm above the presser metal 24.

  The hook hardware 21 is a plate horizontally provided outward from the left vertical member 11, and the hook hardware 21 has a C-shaped elongated hole that fits outside the building pipe 2a of the frame scaffold 1 building frame 2. A hook notch 22 is provided, and the opening 23 of the hook notch 22 in the hook hardware 21 is directed outward of the frame scaffold 1.

  The upper presser foot 25 is a plate horizontally provided outward from the right vertical member 11, and the presser foot 25 has a U-shaped presser that fits outside the building pipe 2a of the frame scaffold 1 building frame 2. Notches 26 are provided, and the opening portions of the pressing notches 26 are directed outward.

  When the handrail frame 10 is attached to the frame scaffold 1, the hook metal 21 and the upper holding metal 25 are positioned on the building pipe 2 a above the crosspiece pipe 2 b at the top of the building frame 2 of the frame scaffold 1.

  Next, the assembly of the frame scaffold 1, the attachment of the handrail frame 10, and the changing method will be described.

  In assembling the frame scaffolding 1, the first stage is such that the number of building frames 2 corresponding to the required width is erected sequentially, and the building frames 2 are connected by braces 4.

  As shown in FIG. 17, the handrail frame 10 for the second stage is attached by loosening the lock bolt 19 and extending the handrail frame 10 to an appropriate length, and extending the hook hardware 21 to the horizontal rail at the top of the left building frame 2. It hangs on the building pipe 2a above the pipe 2b.

  Next, as shown in FIG. 18, the handrail frame 10 is extended and the upper presser foot 25 is hung on the building pipe 2 a above the crosspiece pipe 2 b at the top of the right building frame 2. At this time, holding the right vertical member 11 with one hand, holding the lock bolt 19 with the other hand, and pressing the left vertical member 11 against the building pipe 2a with the lock bolt 19, the hook notch of the hook hardware 21 22 and presser cutouts 26 of presser hardware 24 and 25 can be pressed against the building pipe 2a.

  After confirming that the hook hardware 21 and the holding hardware 24, 25 are attached to the building frame 2, the lock bolt 19 is tightened.

  Sequentially, the handrail frame 10 is attached to the adjacent building frame 2, and the hook hardware 21 and the presser hardware 24, 25 are attached to the same building pipe 2 a in the adjacent handrail frame 10. Are attached in an overlapping manner in the vertical direction.

  Next, as shown in FIGS. 4 to 7, the cloth plate 3 is placed between the tops of the building frame 2. The staircase 5 is also assembled as appropriate. Thereafter, as shown in FIGS. 8 to 10, the second-stage frame scaffold 1 is assembled in the same manner.

  One worker can change the handrail frame 10 attached to the second stage for the third stage.

  An operator on the second-stage cloth board 3 loosens the lock bolt 19 and contracts and removes the handrail frame 10, and lifts and attaches it to the position for the third-stage. This attachment operation is the same as the attachment of the handrail frame 10 for the second stage.

  The same procedure as described above is repeated to form the frame scaffold 1 above. Moreover, what is necessary is just to repeat the above in the reverse procedure, in order to decompose | disassemble the frame scaffold 1. FIG.

  FIGS. 19 to 21 show a handrail frame 40 as a preceding handrail of the second embodiment attached to the frame scaffold 1. Description of the same parts as those in the first embodiment is omitted.

  The handrail frame 40 is provided with a pair of left and right vertical members 41, an upper horizontal member 42 that connects the upper ends of the vertical members 41, and an intermediate horizontal member 45 that connects an intermediate portion of the vertical members 41.

  The vertical member 41 is a round steel pipe whose side view is a vertical line. In the embodiment, the length of the vertical member 41 is about 140 cm, and the distance between the pair of left and right vertical members 41 in the standard state, which is attached to the end of the pair of building pipes 2a of the wide frame 2 is 1,219 mm. did.

  The upper horizontal member 42 is divided into two at the intermediate portion, and one of the two divided upper horizontal members 42 is a thick upper horizontal member 43 and the other is a thin upper horizontal member 44. Hereinafter, for the sake of convenience, the description will be made assuming that the thick horizontal member 43 side is on the left and the thin upper horizontal member 44 side is on the right.

  The left vertical member 41 and the thick horizontal member 43 are integrally formed by bending a round tube inward by 90 degrees. In the embodiment, the vertical member 41 and the thick horizontal member 43 are round steel pipes having an outer diameter of 35 mm and a wall thickness of 1.5 mm, and the length from the center of the left vertical member 41 to the tip of the thick upper member 43. Was 680 mm.

  The upper part of the right vertical member 41 is bent inward by 90 degrees, and a thin upper horizontal member 44 is welded to the tip. The outer diameter of the fine upper horizontal member 44 is smaller than the inner diameter of the thick upper horizontal member 43, and the fine upper horizontal member 44 is slidably fitted into the thick upper horizontal member 43. In the embodiment, the fine upper horizontal member 44 is a round steel pipe having an outer diameter of 30 mm and a wall thickness of 1.5 mm, and the length from the center of the right vertical member 41 to the tip of the fine upper horizontal member 44 is 660 mm. That is, in the standard state, the thin upper horizontal member 44 fits into the thick upper horizontal member 43 by about 120 mm.

  The intermediate horizontal member 45 is divided into two at the intermediate portion, and one of the two divided intermediate horizontal members 45 is a thick intermediate horizontal member 46 and the other is a thin intermediate horizontal member 47. Similarly, the description will be made assuming that the thick intermediate horizontal member 46 side is left and the thin intermediate horizontal member 47 side is right.

  A thick intermediate horizontal member 46 is horizontally welded from the vertical intermediate portion of the left vertical member 41 to the inside. In the embodiment, the thick intermediate horizontal member 46 is a round steel pipe having an outer diameter of 35 mm and a wall thickness of 1.5 mm, and the length from the center of the left vertical member 41 to the tip of the thick intermediate horizontal member 46 is 680 mm.

  A thin intermediate horizontal member 47 is horizontally welded from the vertical intermediate portion of the right vertical member 41 to the inside. The outer diameter of the thin intermediate horizontal member 47 is smaller than the inner diameter of the thick intermediate horizontal member 46, and the thin intermediate horizontal member 47 is slidably fitted into the thick intermediate horizontal member 46. In the embodiment, the thin intermediate horizontal member 47 is a round steel pipe having an outer diameter of 30 mm and a wall thickness of 1.5 mm, and the length from the center of the right vertical member 41 to the tip of the thin intermediate horizontal member 47 is 660 mm. That is, in the standard state, the thin intermediate horizontal member 47 is fitted into the thick intermediate horizontal member 46 by about 120 mm.

  The left large horizontal member 43 and the large middle horizontal member 46 are parallel and the distance between them is 630 mm. Further, the fine upper horizontal member 44 and the fine intermediate horizontal member 47 on the right side are parallel to each other, and the distance between them is also 630 mm. The fine upper horizontal member 44 and the fine intermediate horizontal member 47 are inserted into the thick upper horizontal member 43 and the thick intermediate horizontal member 46 by about 340 mm from the standard state. For this reason, the interval 1,219 mm of the vertical members 41 in the standard state is reduced to about 880 mm, and the pair of building pipes 2 a is also attached to an interval of 914 mm.

  A vertical connecting member 48 is provided to connect the upper horizontal member 43 and the thick intermediate member 46 in the vertical direction. The vertical connecting member 48 is positioned between the pair of left and right vertical members 41 in the standard state, and is welded to the thick upper horizontal member 43 and the thick intermediate horizontal member 46.

  A lock bolt 49 is provided below the vertical intermediate member 48 on the thin intermediate horizontal member 47 side of the thick intermediate horizontal member 46. The lock bolt 49 is provided with an upward screw so that it can be easily turned from below, and when the lock bolt 49 is tightened, the tip of the lock bolt 49 comes into contact with the fine intermediate horizontal member 47, and the slide of the fine intermediate horizontal member 47 and the thick intermediate horizontal member 46 is Fixed.

  The lock bolt 49 is tightened from the lower stage, but the lock bolt 49 is positioned above the cloth plate 3 so that the lock bolt 49 can be loosened from the stage where the handrail frame 40 is attached.

  A pair of lower presser fittings 51 are provided from the lower end of the vertical member 41. The presser foot 51 is a plate provided horizontally from the lower end of the vertical member 51 toward the frame scaffold 1, and the presser foot 51 is a U-shaped presser that fits outside the building pipe 2 a of the frame scaffold 1 building frame 2. Cutouts 53 are provided, the openings of the presser cutouts 53 are directed outward, the presser cutouts 53 are positioned inward of the vertical member 41, and the vertical member 41 is positioned outward of the building pipe 2a.

  A pair of upper pressers 52 are provided from above the lower end of the vertical member 41 by a predetermined distance. In the embodiment, the presser metal 52 is 370 mm above the presser metal 51.

  The upper presser fitting 52 is a plate provided horizontally from the vertical member 11 toward the frame scaffold 1, and the presser fixture 51 has a U-shape that fits outside the building pipe 2 a of the frame scaffold 1 building frame 2. The pressing notches 26 are provided, the openings of the pressing notches 26 are directed outward, the pressing notches 53 are positioned inward of the vertical members 41, and the vertical members 41 are positioned outward of the building pipe 2a.

  When the handrail frame 40 is attached to the frame scaffold 1, the upper presser foot 52 is positioned on the building pipe 2 a above the horizontal beam pipe 2 b at the top of the building frame 2 of the frame scaffold 1.

  Next, a method for attaching and changing the handrail frame 40 will be described.

  To install the second-stage handrail frame 40, loosen the lock bolt 49 to extend the handrail frame 40 to an appropriate length, and move the upper presser foot 52 above the horizontal beam pipe 2b at the top of the left building frame 2. Hang on the construction pipe 2a.

  The handrail frame 40 is extended and the upper presser foot 52 is hung on the building pipe 2a above the horizontal beam pipe 2b at the top of the right building frame 2. At this time, holding the right vertical member 41 with one hand, holding the lock bolt 49 with the other hand, and pressing the left vertical member 41 against the building pipe 2a with the lock bolt 49, hold down the holding hardware 51, 52. The notch 53 can be pressed against the building pipe 2a.

  After confirming that the presser fittings 51 and 52 are attached to the building frame 2, tighten the lock bolt 49.

  One worker can change the handrail frame 40 attached to the second stage for the third stage.

  An operator on the second-stage cloth board 3 loosens the lock bolt 49, shrinks and removes the handrail frame 40, and lifts and attaches it to the position for the third-stage as it is. This attachment operation is the same as the attachment of the handrail frame 40 for the second stage.

  The same procedure as described above is repeated to form the frame scaffold 1 above. Moreover, what is necessary is just to repeat the above in the reverse procedure, in order to decompose | disassemble the frame scaffold 1. FIG.

  22 to 23 show an example in which the handrail frame 10 is attached to the girder side and the handrail frame 40 is attached to the wife side. By attaching the handrail frame 40 to the entire circumference, the work can be performed without using the master rope or the safety belt. So work efficiency and safety are improved.

  In the above embodiment, the thick upper horizontal members 13, 43 and the thick intermediate horizontal members 16, 46 are arranged on the left side, and the thin upper horizontal members 14, 44 and the thin intermediate horizontal members 17, 47 are arranged on the right side. Of course, the left and right sides may be reversed, and they may be interchanged.

  Further, although the lock bolts 19 and 49 are formed by upward screws, the lock bolts 19 and 49 may be provided below the thick intermediate horizontal members 16 and 46, and may be horizontal screws.

  Moreover, although the example in which the handrail frames 10 and 40 are rearranged and attached only to the uppermost stage is shown, they may be attached to all the stages.

It is a front view which shows the 1st Example of the slide type preceding handrail of a frame scaffold. It is the side view. FIG. It is the figure which mounted the cloth board of FIG. It is the side view. FIG. FIG. It is the figure which assembled the frame scaffolding of the 2nd step of FIG. It is the side view. FIG. It is the elements on larger scale which show the principal part. It is a top view of FIG. It is the elements on larger scale which show the principal part of FIG. It is a partial expanded sectional view which shows the principal part of FIG. It is the elements on larger scale which show the principal part of FIG. It is the elements on larger scale which show the principal part of FIG. It is a figure which shows the operation | work state which attaches the preceding handrail of a 1st Example. FIG. 18 is a diagram illustrating a work state continued from FIG. 17. It is a front view which shows the 2nd Example of the sliding type | formula handrail of a frame scaffold. It is the side view. FIG. It is a figure which shows the operation state which attaches the preceding handrail of 1st Example and 2nd Example. FIG. 23 is a diagram showing a working state following FIG.

Explanation of symbols

1 framework scaffold 2 building frame
2a Construction pipe
2b Horizontal cross pipe 3 Cloth board
10 Handrail frame
11 Vertical material
12 Upper horizontal material
13 Thick top horizontal material
14 Fine horizontal material
15 Intermediate horizontal material
16 Thick middle horizontal material
17 Fine intermediate horizontal material
19 Rock bolt
21 Hook hardware
22 Hook notch
23 opening
24 Presser hardware
25 Presser hardware
26 Presser cutout
40 handrail frame
41 Vertical material
42 Upper horizontal material
43 Thick horizontal material
44 Fine horizontal material
45 Intermediate horizontal material
46 Thick middle horizontal material
47 Fine intermediate horizontal material
49 Rock bolt
51 Presser hardware
52 Pressing hardware
53 Presser notch

Claims (4)

  A handrail frame is composed of a pair of left and right vertical members, an upper horizontal member that connects the upper ends of the vertical members, and an intermediate horizontal member that connects the middle part of the vertical members, and the upper horizontal member and the intermediate horizontal member are divided into two at the middle part. One of the upper horizontal members divided into two is a thick upper horizontal member, the other is a thin upper horizontal member, and the thin upper horizontal member is slidably fitted into the thick upper horizontal member, and is divided into two intermediate horizontal members. One of the two is a thick intermediate horizontal member, the other is a thin intermediate horizontal member, the thin intermediate horizontal member is slidably fitted into the thick intermediate horizontal member, and a lock bolt is provided below the thick intermediate horizontal member on the thin intermediate horizontal member side. Provided is a slide type advance handrail of a frame scaffold in which the lock bolt is positioned above the cloth board and the slide of the fine intermediate horizontal material and the thick intermediate horizontal material is fixed by tightening the lock bolt.   A pair of lower presser hardware is provided from the lower end of the vertical member, a hook metal is provided on one vertical member from a predetermined distance above the lower end of the vertical member, and an upper presser metal is provided on the other vertical member. A C-shaped hook notch that fits outside the building pipe of the scaffolding frame is provided, and a U-shaped retaining notch that fits outside the building pipe of the frame scaffolding frame is provided on the presser foot. 2. The frame type scaffolding slide type handrail according to claim 1, wherein the opening portions of the notches are respectively directed outward, and the hook metal piece and the upper holding metal piece are positioned above the horizontal beam pipe at the top of the frame of the frame scaffold.   The sliding advance handrail of the frame scaffold according to claim 2, wherein the opening of the hook notch in the hook hardware faces the outside of the frame scaffold.   A pair of lower presser fixtures are provided from the lower end of the vertical member, and a pair of upper presser fixtures are provided from a predetermined distance above the lower end of the vertical member, and the presser fixture fits outside the building pipe of the frame scaffolding frame. The presser cutouts are shaped so that the openings of the presser cutouts face outward, and the upper presser foot is positioned above the horizontal pipe at the top of the building frame of the frame scaffolding. The sliding type handrail of the frame scaffold according to claim 1, which is positioned inward from the vertical member.

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