JP2006207229A - Preceding handrail fixed metal fittings and preceding handrail fixed metal fitting attached jamb - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide preceding handrail metal fittings in each of which handrails are installed at adjacent handrail columns without clearances, which are excellent in safety, and allow the easy attachment and removal of the preceding handrails when assembling and disassembling framework scaffolding, and to provide a jamb with the preceding handrail metal fittings attached with such preceding handrail metal fittings at its pedestal. <P>SOLUTION: A fitting stud 3 capable of connecting each handrail column 13 to the upper end of a strut body 2 of each preceding handrail fixed metal fitting 1 is extended, a pair of both up-and-down interval holding members 4 and 4 with recesses 7 abutting on the side of the pedestal 6 of the jamb 5 are projected to the side of the strut body 2, the axial center of the strut body 2 and the axial center of the pedestal 6 of the jamb 5 are parallel with each other when each recess 7 contacts with the pedestal 6 of the jamb 5, and a virtual line connecting centers of a pair of opposed joint mounting holes 9 and 9 formed at the side of the upper end of the pedestal 6 of the jamb 5 and a pair of opposed through-holes 8 and 8 having the centers located on the same straight line are formed at the side of the suitable strut body 2 between the pair of interval holding members 4 and 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  For example, in a construction site such as civil engineering and construction, the present invention can be used to ensure the safety of work at the top level when building a frame scaffolding around a bridge pier or along the outer wall of a building. The present invention relates to a bracket for attaching a handrail for attaching a handrail for preventing a fall before it rides on the uppermost scaffolding plate and a building frame to which the metal fitting for the preceding handrail is attached.

  Conventionally, a framework scaffold using a torii type building frame has been widely used in construction sites such as civil engineering and architecture.

  FIG. 10 is a perspective view showing only one vertical row as a typical example of a conventional frame scaffold.

  A building frame 51 that constructs the frame scaffold 50 includes two pedestals 52 and 52, and the upper ends of the pedestals 52 are connected by arms 53. A connection reinforcing material 54 reinforces between the arm 53 and the pedestal 52. The building frame 51 is added to the left, right, up, and down, so that a frame scaffold 50 having a necessary size is completed.

  Between the adjacent left and right building frames 51, a brace 55 is passed diagonally, and a scaffolding plate 56 is installed horizontally on the arm 53. Pipe material is used for the pedestal 52 of the building frame 51, and the upper end opening of the pedestal 51a of the lower building frame 51a and the lower end opening of the pedestal 51b of the upper building frame 51b are connected by a joint 57. Thus, the number of stages can be stacked in the vertical direction. Since the height of the arm 53 is constant, a working scaffold is constructed by a scaffold plate 56 that is horizontally continuous for each stage.

  When assembling the frame scaffold 50, the lower frame scaffold 50a is made, and the upper frame scaffold 50b is stacked on the lower stage. When disassembling, the upper stage scaffold 50b is disassembled sequentially from the upper stage toward the lower stage. When assembling and disassembling the frame scaffold 50, the assembly and disassembly work is performed on the upper surface of the uppermost scaffold plate 56 (see, for example, Patent Document 1).

  However, since there is no pedestal 52 or handrail of the building frame 51 around the uppermost scaffold plate 56 at the time of assembly, there is a problem that there is a risk of falling for the operator.

For this reason, the left and right handrail pillars having a width slightly smaller than the span and the upper and lower handrails connecting the left and right handrail pillars are integrated for each span in the left and right direction of the building frame 51 constituting the frame scaffold 50. A method has been proposed in which a frame-shaped handrail frame is attached to the lower frame scaffolding 50a prior to work at the uppermost stage (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 1-18753 Registration Utility No. 3095492

  However, in the case where the handrail frame is attached to the upper frame scaffolding 50b prior to the work at the uppermost stage as disclosed in Patent Document 2, the handrail of the handrail frame that is continuously installed on the left and right. Since the mounting members provided on the pillars are devised so that they do not overlap, the width of the single handrail frame is made smaller than the span of the left and right building frames 51, 51. There is a problem that the safety is inferior because a gap is generated in the door, and the handrail frame itself is relatively large, so it is heavy and difficult to move. Therefore, it is difficult to attach and detach the building frame 51. There was a problem.

  Therefore, the present invention is superior in safety that the left and right handrail pillars are constructed with the same span as the leg pillars of the building frame so that the handrails are installed between the left and right adjacent handrail pillars without gaps, and the frame scaffolding Attaching and removing the leading handrail when mounting and disassembling the leading handrail, and attaching the leading handrail by attaching the preceding handrail fixing bracket to the pedestal of the building frame in advance. An object of the present invention is to provide a building frame with a fixing bracket for a handrail that facilitates removal work.

  In order to achieve the above-described problems, the invention according to claim 1 is characterized in that a fitting column that can be connected to a handrail column is extended to the upper end portion of the column body, and a leg of the building frame is provided on the side surface of the column body. A pair of upper and lower gap holding members provided with recesses that come into contact with the side surfaces of the pillars, and when the depressions of the pair of gap holding members are brought into contact with the pillars of the building frame, the shaft center of the column main body and the building frame The axis of the pedestal column is parallel to each other, and the side surface of the column body corresponding to the space between the pair of spacing members is opposed to the side surface of the upper end of the column column. It is characterized by having a pair of opposing through-holes with centers located on the same straight line as a virtual line connecting the centers of the pair of joint mounting holes.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, when the handrail column is attached to the fitting column from above, a retaining pin is pushed inward by the lower end of the handrail column, and then a predetermined amount is provided. When the handrail column is removed, the retaining pin pops outward and the retaining pin is fitted into a retaining hole provided in the handrail column so that the retaining pin is locked. A lock device that can be pushed in to release the locked state is provided.

  In the invention according to claim 3, in addition to the configuration of claim 1 or 2, a gripping bracket for gripping a pillar of a building frame can be connected to the lower spacing member among the pair of upper and lower spacing members. It has the attachment part.

  According to a fourth aspect of the present invention, in addition to the configuration according to the third aspect, of the pair of upper and lower spacing members, the width dimension of the lower spacing member is a plan view of the upper spacing member. The holding bracket is an arc-shaped gripping part capable of gripping more than half of the outer periphery of the pedestal of the building frame, and the lower gap holding extending outward from the arc-shaped gripping part. A pair of opposing sandwiching protrusions that can sandwich the member, the dimension of the opening of the pair of sandwiching protrusions is smaller than the outer diameter dimension of the pillars of the building frame, and the connecting reinforcing material of the building frame It is characterized by being larger than the outer diameter.

  The invention related to the building frame with the fixing bracket for the leading handrail according to claim 5 includes the fixing bracket for the leading handrail in which the fixing bracket for the leading handrail according to any one of claims 1 to 4 is attached to the building frame. It is a building frame, a joint is inserted into the upper end opening of the pedestal of the building frame, and a pair of opposed joint mounting holes for attaching the joint to the building frame and a pair of opposed through holes provided in the column main body. The preceding handrail fixing bracket is detachably fixed to the outside of the building frame using a penetrating fixing member.

  Since this invention employs the above-described means, the following effects can be obtained.

  According to the invention described in claim 1, with the joint inserted into the upper end opening of the lower building frame, the recesses of the pair of upper and lower spacing members of the column main body are addressed to the outside of the pillars of the building frame, Attach the mounting bracket for the handrail to the pedestal of the building frame using a fixing member such as a bolt that penetrates both the through holes of the column main body and the joint mounting holes of the pedestal of the building frame. In addition, the fixing member for the handrail can be removed from the pedestal of the building frame by releasing the fixing state of the fixing member such as a bolt. In addition, the fitting column is parallel to the building column's pedestal in a state where the fixing bracket for the handrail is attached to the building column's pedestal with a fixing member such as a bolt, so the railing column is connected to the fitting column. In this case, the left and right handrail pillars are built upright with the same span as the leg pillars of the building frame. In addition, since it is not necessary to perform fine adjustment work during the attachment work, it is easy to attach and detach the bracket for the leading handrail and the leading handrail.

  According to the second aspect of the present invention, the retaining pin of the locking device is fitted into the retaining hole provided in the handrail column at a predetermined position simply by inserting the lower end portion of the handrail column into the fitting column from above. The lock pin is locked and the lock pin of the lock device is manually pushed inward to release the lock pin and the handrail column can be lifted upward to remove the handrail column from the fitting column. Therefore, in addition to the effect of the invention described in claim 1, the operation of attaching the handrail column to the preceding handrail fixing bracket and the operation of removing the handrail column from the preceding handrail fixing bracket do not require a tool. Can be realized.

  According to the invention described in claim 3, since the space holding member below the column main body can be fixed to the pedestal of the building frame via the gripping bracket, the effect of the invention described in claim 1 or 2 is achieved. In addition, when a force to tilt the handrail column connected to the mating column in the horizontal direction is applied, it is effective for the force to tilt the handrail column by suppressing the force that the lower spacing member tries to separate from the leg column of the building frame. Therefore, it is possible to effectively prevent the operator from falling and falling, and to ensure the worker's safe work.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the lower end portion of the pedestal of the building frame is inserted into the space portion of the arc-shaped gripping portion of the gripping bracket, and the sandwiching projecting piece If the gripping bracket is moved upward in a state where the frame is directed to the inside of the building frame, the gripping bracket is a pipe material in which the opening of the holding projection piece is narrower than the leg column with the pedestal in the arc-shaped gripping portion as a guide. It is possible to pass through the horizontal portion of the connecting reinforcing material to the vicinity of the space holding member at the lower portion of the fixing bracket for the handrail. Therefore, the opening of the holding protrusion of the holding bracket is widened to be larger than the outer diameter dimension of the pedestal of the building frame, the arc-shaped holding part is directed to the pedestal of the building frame, and then the opening of the holding protrusion is moved back to the original position. There is no need for an operation to return to the size and to reach the mounting portion of the interval holding member of the fixing bracket for the handrail. In other words, it is not necessary to perform bending work to open and return the holding protrusions of the gripping bracket when attaching the bracket for the leading handrail to the building frame, so that even weak women and elderly people can easily perform installation work. Can do. In addition, such a situation can also occur when removing the mounting bracket for the leading handrail from the building frame or attaching the fixing bracket for the leading handrail to the building frame because of the necessity of maintenance of the building frame at the material storage etc. Even in such a case, since it is not necessary to bend the holding protrusion of the holding metal fitting, even a weak woman or an elderly person can easily perform the maintenance work of the building frame.

  According to the invention related to the building frame with the fixing bracket for the handrail according to claim 5, when assembling the frame scaffolding, the joint is already inserted in the upper end opening of the pedestal of the lower building frame. Since the fitting post of the handrail fixing bracket is parallel to the leg column of the building frame, the handrail column is kept upright when the handrail column is connected to the fitting post. Therefore, the left and right handrail pillars stand upright with the same span as the leg pillars of the building frame by simply inserting a pair of left and right handrail pillars assembled with handrails from the lower frame scaffolding into the fitting pillars of the fixing bracket for the preceding handrail. By being constructed in a state, the handrails are installed without gaps between the left and right adjacent handrail pillars, and the handrails built on the adjacent handrail pillars can be constructed on the side surface of the upper scaffolding plate. Therefore, the operator's safety work in the upper stage is ensured, and attachment / detachment of the leading handrail becomes easy.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a bracket for a handrail according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a preceding handrail fixing bracket according to an embodiment of the present invention.
FIG. 2 is a partially broken front view of the fixing bracket for the handrail according to the embodiment of the present invention.

  The leading handrail fixing bracket 1 is composed of a straight steel pipe column main body 2, a fitting column 3 extending upward from the column main body 2, and a pair of upper and lower protrusions projecting perpendicularly from the side surface of the column main body 2. It has interval holding members 4a and 4b.

  A concave portion 7 having an arc shape substantially the same as the arc shape of the side surface of a leg column 6 of the building frame 5 described later is formed at the distal end portions of the spacing members 4a and 4b. It can come into contact with the side surface in close contact.

  A pair of through holes 8, 8 penetrating at right angles to the side surface of the column main body 2 are formed in the side surface of the column main body 2 corresponding to the space between the pair of upper and lower spacing members 4 a and 4 b. Then, when attaching the mounting bracket 1 for the leading handrail to the pedestal 6 of the building frame 5, a pair of opposed ones provided at the side surfaces of the upper end portions of the pedestal 6 of the building frame 5 with the centers of the through holes 8, 8. The through holes 8 and 8 provided in the column main body 2 and the leg columns 6 of the building frame 5 are arranged so as to coincide with the imaginary line connecting the axis centers of the joint mounting holes 9 and 9 on the same straight line. A fixing member 1 such as a bolt can be passed through the provided joint mounting holes 9 and 9 to fix the bracket 1 for the handrail to the leg column 6 of the building frame 5 (see FIG. 4).

  The width dimension A in plan view of the spacing member 4b provided below the column main body 2 is the same as the outer diameter dimension of the main column column 2 in consideration of the maximum dimension of the fixing member 10 for attaching a gripping fitting 11 described later. It is set to be smaller than the width dimension B in plan view of the substantially upper spacing member 4a. Accordingly, even when the lower spacing member 4b is firmly fixed by the holding bracket 11 with the pillar 6 of the building frame 5, the protrusion by the holding bracket 11 and the fixing member 10 can be suppressed as small as possible. .

  Further, a bolt hole 12 through which the fixing member 10 such as a bolt is inserted is formed in the lower spacing member 4b.

  A retaining pin 16 that engages with a retaining hole 15 formed in the lower end portion 14 of the handrail column 13 in order to maintain the state in which the handrail column 13 is attached to the fitting column 3 is provided inside the fitting column 3. A locking device 17 is incorporated.

  The locking device 17 includes an elastic member 18 that generates a force for urging outward from the axis of the fitting support 3, and a retaining pin 16 attached to the elastic member 18. When the locking pin 16 is normally held, the locking pin 16 protrudes in a horizontal direction from a projecting hole 19 formed in the side surface of the fitting support 3, and overcomes the urging force of the elastic member 18, so that the retaining pin 16 is fitted. 3 has a mechanism in which the retaining pin 16 is buried in the projecting hole 19 only when a force to push into 3 is applied.

  The retaining pin 16 includes a sloped upper surface 21 extending from the surface position of the side surface of the fitting post 3 to the tip 20 of the retaining pin 16, and the tube material plate of the handrail column 13 from the surface position of the side surface of the fitting column 3. It has a horizontal surface 22 projecting outward by a thickness dimension, and a lower surface inclined portion 23 reaching the tip of the horizontal surface 22 and the most distal end 20 of the retaining pin 16.

  FIG. 3 is a front view showing a state in which the leading handrail fixing bracket according to the embodiment of the present invention is attached to the building frame, and FIG. 4 shows the handrail pillar on the leading handrail fixing bracket according to the embodiment of the present invention. It is a principal part enlarged front view which showed the state just before attaching.

  In the torii type building frame 5 which is a general building frame, the upper ends of two vertically-facing two pedestals 6 and 6 of the same length are connected by a brace 24 made of a horizontal pipe, 6 and 6 and the brace 24 are reinforced by a connecting reinforcing member 25. The connection reinforcing member 25 connects the upper end of the J-shaped tube member to the lower side surface of the arm brace 24 and connects the lower end to the side surface of the leg column 6, and connects the connection reinforcing member 25 and the leg column 6 to the middle portion of the connection reinforcing member 25. Are provided with a horizontal reinforcing material 26. In general, a steel pipe having an outer diameter of 42.7 mm and an inner diameter of 37.9 mm (plate thickness 2.4 mm) is used for the pedestal 6 and the brace 24. As the reinforcing material 26, a steel pipe material having an outer diameter of 27.2 mm is used.

  Hereinafter, a method for constructing a frame scaffold using the preceding handrail fixing bracket according to the embodiment of the present invention will be described with reference to FIGS.

  FIG. 5 is an explanatory view showing a state in which one end portion of the handrail is engaged with the engaging portion of the handrail column attached first. FIG. 6 is an explanatory view showing a state in which an engaging portion of a handrail column to be attached later is engaged with the other end portion of the handrail column in FIG. 5. FIG. 7 is an explanatory view showing a state in which the handrail column attached from the rear of FIG. 6 is attached to the preceding handrail fixing tool. FIG. 8 is an explanatory diagram showing a state in which the upper scaffolding plate is attached from the lower framework scaffolding.

  As the building frame 5 is added to the left and right and up and down, a frame scaffold 27 having a necessary size can be constructed, and the brace 28 is diagonally passed between the adjacent left and right building frames 5 and 5, and the scaffold 24 is used as a scaffold. A plate 25 is installed horizontally. The upper end opening 30 (see FIG. 3) of the pedestal 6 of the lower building frame 5a and the lower end opening 31 (see FIG. 3) of the pedestal 6 of the upper building frame 5b are connected by a joint 32. Thus, the building frames 5b and 5a can be stacked vertically. And since the height of the arm 24 in the upper, lower, left, and right building frames 5 is constant, a working scaffold by the scaffolding plate 25 that is horizontally continuous is constructed for each stage.

  When assembling the frame scaffolding 27 up and down, the lower frame scaffolding 27a is made, and the upper frame scaffolding 27b is stacked on the lower stage. Conversely, when disassembling, the lower frame scaffolding 27b is sequentially arranged from the upper frame scaffolding 27b. It will be demolished toward the scaffold 27a.

  In order to attach the leading bracket fixing bracket 1 to the building frame 5, a method of attaching to the pedestal 6 of the building frame 5 at the site of constructing the frame scaffold 27, and a manufacturing factory of the building frame 5 prior to the construction of the frame scaffold 27. A method of attaching to the pedestal 6 of the building frame 5 at the time of shipment or at the stage of the material storage is conceivable.

  Hereinafter, a method of attaching the fixing bracket for the handrail to the building frame at the site where the frame scaffold is constructed will be described mainly with reference to FIGS. 1 and 3.

  In the case of attaching to the pedestal 6 of the building frame 5 at the site where the frame scaffold 27 is constructed, in the procedure for constructing the lower frame scaffold 27a as described above, before the scaffold plate 25 is installed on the arm 24, The joint 32 is inserted into the upper end opening 30 of the leg column 6 of the lower building frame 5a, and the joint mounting hole 9 provided in the upper end portion of the leg column 6 of the lower building frame 5a and the drop provided in the joint 32 are inserted. After the orientation of the joint 32 is determined so that the set pin mounting hole 33 overlaps, the inner side with the spacing member 4 from the outer through-hole 8 without the spacing member 4 of the column main body 2 of the bracket 1 for the preceding handrail is located. The bolt 10 which is a fixing member is penetrated in advance toward the through hole 8, and the tip 34 of the bolt 10 is inserted from the joint attachment hole 9 outside the building frame 5 to attach the joint inside the building frame 8. 9 holes To pop.

  Thereby, the center of the through-holes 8 and 8 of the column main body 2 and the center of the joint mounting holes 9 and 9 of the pillar 6 of the building frame 5 are aligned in a straight line by one bolt 10, and as a result, the building The mounting height of the preceding handrail fixing bracket 1 with respect to the pillar 6 of the frame 5 and the orientation in plan view are automatically determined correctly. At this time, the recesses 7 and 7 at the tips of the pair of upper and lower spacing members 4a and 4b of the column main body 2 come into contact with the side surfaces of the column main body 2 and then jump out of the inner joint mounting holes 9. By screwing a nut 35 into the tip 34 of the bolt 10 and tightening the nut 35, the preceding handrail fixing bracket 1 moves toward the inside of the leg column 6 of the building frame 5. The leading handrail fixing bracket 1 is firmly fixed to the leg column 6 of the building frame 5 in a state where the recesses 7 and 7 of the spacing members 4 a and 4 b are in close contact with the side surface of the leg column 6 of the building frame 5.

  Further, the arc-shaped gripping portion 36 of the gripping metal fitting 11 is inserted from the lower end portion of the pedestal 6 of the building frame 5, and the openings of the pair of opposing clamping protrusions 37, 37 of the gripping metalwork 11 are placed inside the building frame 5. When the gripping metal fitting 11 is moved upward and passes through the horizontal reinforcing member 26, the opening portions of the sandwiching protrusions 37, 37 are directed to the outside of the building frame 5 and are provided below the column main body 2. The gap holding member 4b is sandwiched between the holding protrusions 37, 37 of the holding metal fitting 12, the metal fitting mounting hole 39 of the holding metal fitting 11 is directed to the bolt hole 12 of the lower gap holding member 4b, and the metal fitting mounting bolt 40 is held. By passing through the metal fitting mounting hole 39 and the bolt hole 12 of the metal fitting 11 and screwing the nut 41 to the tip of the metal fitting mounting bolt 40 and tightening the nut 41, the lower interval holding member 4 b and the leg of the building frame 5 are secured. The column 6 is fixed.

  As a result, a force is generated such that the operator loses his / her posture and pulls the handrail 42 toward the inside of the building frame 5, and as a result, a force for bending the upper end of the handrail pillar 13 supporting the handrail 42 toward the inside of the building frame 5 is generated. Even if a force is applied to cause the fitting support column 3 at the upper end of the preceding handrail fixing bracket 1 to bend toward the inside of the building frame 5, the lower spacing member 4 b and the leg column 6 of the building frame 5 are connected. Since it is fixed, it is possible to suppress the force that the lower spacing member 4b is separated from the leg column 6 of the building frame 5 and to effectively counteract the force that causes the handrail column 13 to fall down. And the fitting column 3 extending from it is surely maintained in an upright state, and the handrail column 13 is prevented from falling into the inside of the building frame 5. It can effectively prevent falls, and can be used when working at high altitudes. It is possible to guarantee the full.

  By the way, although it is possible to divert the joint 32 which connects the upper and lower building frames 5 and 5 as the fitting support | pillar 3 which attaches the handrail pillar 13, the joint 32 currently generally used is inserted in the inside of the leg pillar 6. FIG. Because the steel pipe material with an outer diameter of 36.4 mm is used for the column part, when the same steel pipe material as the leg column 6 is used for the handrail column 13, the outer diameter dimension is 42.7 mm and the inner diameter dimension. Is a combination of a support portion with an outer diameter of 36.4 mm inside 37.9 mm (plate thickness 2.4 mm), and when both axes are aligned, a gap of 0.75 mm is generated on both sides of the axis And the fitting with the fitting post 3 of the preceding handrail fixing bracket 1 that supports the handrail pillar 13 becomes too loose, and the handrail pillar 13 rattles on the fitting pillar 3, and the force to try to knock down the handrail pillar 13 Trying to support the handrail pillar 13 against If not only a disadvantage, the operator there is a problem that it becomes possible to feel the anxiety now that the handrail 42 is itself rattling when multiplied by the hand to the handrail 42.

  Therefore, in the preceding handrail fixing bracket 1 according to the embodiment of the present invention, a steel pipe material having an outer diameter of 38.1 mm and an inner diameter of 33.5 mm is provided on the support body 2, and the fitting support 3 parts are provided. When the outer diameter is set to 37.3 mm by drawing, when the handrail column 13 having an outer diameter of 42.7 mm and an inner diameter of 37.9 mm (plate thickness 2.4 mm) is used, both shafts When the centers are aligned, the size is controlled so that a gap of 0.4 mm is generated on both sides of the shaft center. As a result, even when a force is exerted to bring down the handrail column 13 as in the case where the worker puts his hand on the handrail 42, the handrail 42 itself is slightly wobbled so that the worker feels uneasy. In addition, the fitting operation when attaching the handrail column 13 to the fitting column 3 can be performed smoothly.

  By the way, the fixing bracket 1 for the leading handrail is attached to the pedestal 6 of the building frame 5 at the site where the frame scaffold 27 is constructed, or at the time of shipment of the manufacturing factory of the building frame 5 before constructing the frame scaffold 27 or at the material storage Even if any method of attaching to the pedestal 6 of the building frame 5 is adopted at a certain stage, in the embodiment according to the present invention, one frame scaffold 27 corresponds to the opposite side of the structure such as a building or a pier. A leading handrail composed of a combination of two handrail pillars 13 and 13 and at least one handrail 42 installed between the two handrail pillars 13 and 13 is constructed on the outside of the scaffolding plate 25 to be constructed. Become.

  Next, according to the above-described procedure, the handrail fixtures 1 and 1 are attached to the upper ends of the pair of left and right pedestals 6 and 6 corresponding to the opposite side of the structure of the pair of left and right building frames 5 and 5 and the structure such as the pier. A method of attaching the handrail 42 from the state where it is placed will be described.

  First, a method for attaching a handrail post to a fitting post of a preceding handrail fixture will be described mainly with reference to FIGS.

  In order to attach the handrail column 13 to the fitting column 3, the lower end 44 of the handrail column 13 is fitted when the lower end opening 31 is inserted from above the fitting column 3 while keeping the handrail column 13 standing vertically. The lower end 44 of the handrail column 13 slides down the upper inclined portion 21 from the side surface of the sliding fitting post 3 by lowering as it is, but hitting the upper inclined portion 21 of the retaining pin 16 of the locking device 17 incorporated in the inside of the mating post 3. Since a component force is generated to push the retaining pin 16 biased in the protruding direction inward, the retaining pin 16 is pushed toward the center of the fitting column 3 and buried in the fitting column 3. After that, when the leading edge 20 of the retaining pin 16 slides on the inner peripheral surface of the handrail column 13 and the center of the retaining hole 15 and the center of the retaining pin 16 coincide, The retaining pin 16 protrudes Handrail column 13 by engaging the lower inner circumferential surface of the horizontal surface 22 of the retaining pin 16 locking hole 15 is to be secured to the upright at a predetermined position of the mating posts 3.

  The handrail column 13 is provided with a locking portion 43 having a mechanism that cannot be unlocked unless an artificial operation such as a gravity lock at a predetermined height or a projecting piece having an uneven shape on the outer shape is performed in advance. .

  Further, as shown in FIG. 9, engagement holes 44, 44 that engage with the locking portions 43 are formed at both ends of the handrail 42, and the engagement holes 44 are formed in the longitudinal direction of the handrail 42. By making it a rectangular long hole having a long side parallel to the pair, it is possible to cope with a slight change in the distance between the pair of handrail pillars 13.

  Therefore, as shown in FIG. 5, the engagement hole 44 provided at the other end portion of the handrail 42 that is not held by the hand is held first from the lower frame scaffold 27a. It inserts in the latching | locking part 43 provided in the handrail pillar 13 to which it attached.

  Next, as shown in FIG. 6, the engagement hole 44 provided at one end of the handrail 42 held in the hand is inserted into the engagement portion 43 provided in the handrail column 13 to be attached. Using the engaging portion 43 of the handrail 42 attached to the fitting post 3 of one of the preceding handrail fixing tools 1 as a rotation axis, the handrail pillar 13 to be attached is lifted in a vertical position, If the hand holding the handrail column 13 is lowered by inserting the lower end opening 31 from above the fitting post 3 of the other preceding handrail fixture 1, the retaining hole of the handrail column 13 held in the hand 45, the retaining pin 16 is engaged and fixed at a predetermined position of the fitting column 3 (see FIG. 7), and at the same time, the scaffolding plate 25 corresponding to the opposite side of the structure such as a building or a bridge pier is provided. On the outside, two handrail pillars 13 and 13 and these two Consist of a combination of at least one handrail 42 is installed between the handrail column 13 prior handrail is to be constructed.

  After that, as shown in FIG. 8, if the upper scaffolding plate 25 is installed on the arms 24, 24 of the pair of left and right building frames 5b, 5b of the upper frame scaffolding 27b from the lower scaffolding plate 25, the leading handrail The frame scaffold 27 constructed by is completed.

  In order to disassemble the preceding handrail composed of the handrail 42 and the handrail pillar 13, the retaining pin 16 is manually pushed inward against the urging force of the elastic member 18, and the horizontal surface 22 of the retaining pin 16 is moved. After releasing the engagement with the lower inner peripheral surface of the stop hole 15, the handrail column 13 is lifted upward, and the handrail column 13 is moved from the fitting columns 3, 3 of the left and right preceding handrail fixing brackets 1, 1. Remove books one by one.

  Further, as described above, the width A in the plan view of the spacing member 4a provided below the column main body 2 is the width in the plan view of the upper spacing member 4b which is substantially equal to the outer diameter of the main column 2. Since it is smaller than the dimension B, even when the leg column 6 of the building frame 5 is fixed to the lower spacing holding member 4a by using the holding metal fitting 11, the metal fitting that protrudes outward from the sandwiching protrusion 37 is attached. The dimension obtained by adding the height of the bolt 40 and the height of the nut 41 is suppressed to a value substantially equal to the outer diameter dimension of the column main body 2. Therefore, the maximum width of the building frame 5 in the state in which the mounting bracket 1 for the leading handrail is attached is the outer diameter of the arc-shaped gripping portion 36 when the gripping bracket 11 is attached to the pedestal 6. The outer diameter dimension is a value obtained by adding a dimension twice as large as the thickness of the arc-shaped gripping portion 36 to the outer diameter dimension of the leg pillar 6 of the building frame 5, and slightly smaller than the outer diameter dimension of the leg pillar 6 of the building frame 5. It is a big one. Accordingly, even in the building frame 5 in which the fixing bracket 1 for the handrail is attached to the pedestal 6, there is no large protrusion exceeding the outer diameter dimension of the pedestal 6, so even in a state where a plurality of building frames 5 are stacked. When the building frame with the fixing bracket for the leading handrail according to the embodiment of the present invention is adopted, it is stored in the manufacturing factory or the material storage area in the same manner as a general building frame without the fixing bracket for the leading handrail. Of course, it is easy to handle during transportation.

It is a perspective view of the fixing metal fitting for prior handrails concerning an embodiment of this invention. It is the front view which fractured | ruptured partially the fixed metal fitting for prior handrails concerning the embodiment. It is the front view which showed the state which attached the fixing metal fitting for prior handrails concerning the embodiment to the building frame. It is the principal part enlarged front view which showed the state just before attaching a handrail pillar to the fixing bracket for precedence handrails concerning the embodiment. It is explanatory drawing which shows the state which engaged the end part of the handrail with the engaging part of the handrail pillar attached initially. It is explanatory drawing which shows the state which engaged the engaging part of the handrail pillar attached later to the other end part of the handrail pillar of FIG. It is explanatory drawing which shows the state which attaches the handrail pillar attached from the back of FIG. 6 to the fixing tool for preceding handrails. It is explanatory drawing which shows the state which attaches an upper stage scaffold board from a lower frame scaffold. It is a front view of the handrail which abbreviate | omitted the intermediate part. It is the perspective view which showed the completion state of the frame scaffold using the conventional building frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixing metal fitting for handrail 2 Prop body 3 Fitting support 4, 4a, 4b Spacing holding member
5, 5a, 5b Building frame 6, 6a, 6b Leg column 7 Recessed portion 8 Through hole 9 Joint mounting hole 10 Bolt (fixing member)
11 Grip bracket 12 Mounting hole (Mounting part)
13 handrail pillar 15 retaining hole 16 retaining pin 24 arm 27 frame scaffolding 28 bracing 42 handrail 43 engaging portion 44 engaging hole

Claims (5)

A fitting support column that can be connected to a handrail column is extended to the upper end of the support column body, and a pair of upper and lower spacing holding members provided with recesses that contact the side surfaces of the leg columns of the building frame are provided on the side surface of the support column body. When the recesses of the pair of spacing members are brought into contact with the pedestal of the building frame, the axis of the column main body and the axis of the pedestal of the building frame are parallel to each other, and the pair of spacing is maintained. A center located on the same side as a virtual line connecting the centers of a pair of opposing joint mounting holes provided on the side surface of the upper end of the pedestal of the building frame, on the side surface of the column main body corresponding to between the members And a pair of through-holes facing each other. When the handrail column is mounted from above, the retaining pin is pushed inward by the lower end of the handrail column, and then the retaining pin jumps out at a predetermined position and is provided on the handrail column. A locking device is provided in which the retaining pin is fitted into a retaining hole that is in a locked state, and when the handrail column is removed, the retaining pin can be manually pushed inward to release the locked state. The preceding bracket for mounting a handrail according to claim 1. The lower interval holding member of the pair of upper and lower interval holding members has an attachment portion to which a holding fitting for holding a pedestal of a building frame can be connected. Fixing bracket for leading handrail. Of the pair of upper and lower spacing members, the width of the lower spacing member in plan view is smaller than the width of the upper spacing member in plan view. / The arc-shaped gripping part capable of gripping two or more, and a pair of opposing clamping protrusions capable of sandwiching the lower spacing member extending outward from the arc-shaped gripping part, The size of the opening part of a clamping protrusion is smaller than the outer diameter dimension of the pedestal of a building frame, and is larger than the outer diameter dimension of the connection reinforcement of a building frame, The fixing for prior handrails of Claim 3 characterized by the above-mentioned. Hardware. 5. A building frame with a preceding handrail fixing bracket, wherein the preceding handrail fixing bracket according to any one of claims 1 to 4 is attached to a building frame, wherein a joint is inserted into an upper end opening of a pedestal of the building frame. The fixing bracket for the leading handrail on the outside of the building frame using a fixing member that passes through a pair of opposed joint mounting holes for mounting the joint to the building frame and a pair of opposed through holes provided in the column main body. A building frame with a fixing bracket for a leading handrail, characterized in that it is detachably fixed.

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