JP2011074725A - Scaffold for stair veranda construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scaffold for stair veranda construction, which is installed in a stair veranda of a high-rise apartment building, and is firmly supported by the veranda without being tilted due to wind blowing. <P>SOLUTION: The scaffold M is constituted by landing scaffolds 10A which are installed on a lower landing 4 and an upper landing 5, and stair scaffolds 10 which are connected with the landing scaffolds 10A and configured so as to tightly stick between the tread surfaces 3 of stairs 2 and a slanting ceiling wall 9. The stair scaffold 10 is constituted by a support body 11 and a scaffold stage 16. The support body 11 is provided with a vertical support 12 disposed between the tread surface 3 of the stairs 2 and the slanting ceiling wall 9, and a scaffold stage stay 15 protruding over a veranda side wall 7 from the vertical support 12. The scaffold stages 16 are disposed by spanning a plurality of the scaffold stage stays 15. The upper part of the vertical support 12 is provided with a pressing part 13 for pressing the slanting ceiling wall 9. By operating a jack part 122 of the vertical support 12, the slanting ceiling wall 9 is pressed thereby tightly supporting the vertical support 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a staircase veranda work scaffold for installation on a stair veranda in a high-rise house or a super-high-rise house or the like to perform cleaning work or repair work on the outer wall of a staircase veranda.

  When performing exterior wall construction such as cleaning and renovation of the side walls of the stairs veranda in high-rise houses and super high-rise houses over 20 floors above the ground, the building wind generated by the high rises soars and blows through the building, It is easily affected by wind that is difficult to think on the ground. For this reason, the work on the outer wall of the staircase veranda, which has been conventionally performed, such as the work performed by hanging the gondola from the roof, is difficult to perform because of the great danger. In recent years, there has been an accident where a gondola falls during the construction of the outer wall of the veranda, while super high-rise houses are lined up. In addition, in the case of a picket scaffold that is built up from the ground, in the case of high-rise housing, the construction of the scaffold becomes a major work, which requires a long construction period or enormous construction costs, and in reality it is impossible to construct a scaffold. Has occurred.

  For this reason, conventionally, as known in Patent Document 1, a scaffold that can be assembled with a veranda has been provided. According to this, the scaffold was configured as a work frame body by providing a support body that supports the floor surface and ceiling wall of the veranda so as to stretch, and projecting an overhanging frame body from the scaffold body to the outside of the veranda. . As a result, the scaffold body can be simplified, the construction period can be shortened, and the construction cost can be reduced.

JP 11-2223012 A

  However, in the so-called tower-type high-rise condominiums where the high-rise houses extend from the 20th floor to the 50th floor or higher, the building-like effects described at the beginning are greatly affected, and even a little dangerous work can be assumed. It cannot be configured. In other words, it was necessary to construct a nearly 100% safe scaffold, and the scaffold had to be able to be provided at low cost by preventing the construction from being prolonged.

  In the scaffold of Patent Document 1, for example, when a pressing part that presses the veranda ceiling wall in a building style is damaged, the scaffold itself may be inclined and fall, which is dangerous. Further, this scaffold could not be applied to a stepped veranda formed in a step shape.

This invention solves the above-mentioned subject, and it aims at providing the scaffold for construction of the stair veranda installed in the stair veranda of a high-rise building and comprised safely. Therefore, the construction scaffold according to the present invention is configured as follows. That is,
The invention according to claim 1 is a staircase veranda construction scaffolding installed on a staircase veranda of a high-rise house, and is formed in a two-step tread surface on a staircase having a step and an oblique plane. Installed between the upper surface of the upper staircase disposed immediately above the tread surface, has a jack portion whose height is adjustable at one end and abuts against the tread surface, and the rear surface of the upper staircase at the other end. A support body comprising a vertical column configured by disposing a pressing part that presses and a scaffolding stay projecting from the vertical column to the outer wall side of the staircase veranda is configured, and has the step. A structure in which a scaffold base on which an operator works is bridged over two scaffold base stays in the two supports installed adjacent to the stepped surface of the step. It is.

  The invention according to claim 2 relates to the invention according to claim 1, wherein the support body is provided with an auxiliary to stand up from a tread surface above the tread surface on which the vertical support column stands to support the vertical support column. It is characterized in that a support is provided.

  The invention according to claim 3 is a staircase veranda construction scaffolding to be installed on a staircase veranda of a high-rise house, wherein a plurality of treads in a staircase arranged with steps are provided on the uppermost stage. The floor of the upper floor landing arranged on the upper surface side of the tread, the floor of the lower floor landing arranged below the tread arranged at the bottom, the upper floor landing and the lower layer Between the side of the staircase veranda disposed outside the staircase landing between the floor landing and the back of the upper staircase formed in an oblique plane and directly above the tread surface, The floor of the lower floor landing or the floor of the upper floor landing or the tread of the staircase is supported so that one end has a jack portion whose height can be adjusted, and the other end of the upper staircase is supported. A vertical support composed of a pressing part that presses the back surface, and the front A scaffold base stay projecting from a vertical column to the side of the staircase veranda side wall, and the scaffold base stay in the adjacent support body installed on at least two steps of treads having a step. On top of this, a plurality of scaffolding platforms are formed in a step shape across a scaffolding platform on which an operator works.

  Invention of Claim 4 concerns on invention of Claim 3, Comprising: The support body arrange | positioned at the said staircase WHEREIN: From the tread surface above the tread surface which the said vertical support | pillar installed erects Auxiliary struts that stand and support the vertical struts are provided.

  Invention of Claim 5 concerns on invention of any one of Claim 2 or 4, Comprising: The said press part is arrange | positioned on the extension line of the said vertical support | pillar, and the press which presses the back surface of the said upper-layer staircase And a sub-pressing body that presses the back surface of the upper layer staircase at a position away from the pressing body along the width direction of the back surface of the upper layer staircase.

  The invention according to claim 6 relates to the invention according to claim 5, wherein the pressing body is formed on a pressing body base mounted on a tip of the vertical support along an inclined surface of a back surface of the upper step. It is connected so that it can rotate, and it is connected to the said vertical support | pillar adjacent with a level | step difference via a connection auxiliary stay.

  The invention according to claim 7 relates to the invention of claims 5 and 6, wherein the sub-pressing body is rotatably connected to a sub-pressing body base slidably disposed on the pressing body base. In addition, one end of the auxiliary column is connected.

  According to the configuration of the first aspect of the present invention, the two vertical struts having one step abutting against the tread surface of the staircase and having a step are respectively pressed against the back surface of the upper layer staircase. have. By operating the jack portion of the vertical column, the vertical column is supported so as to be stretched in the stair veranda, and the support is firmly supported by the vertical column. In this state, scaffolding stays protrude from each of the vertical supports of the two supports that are erected with a step, and the scaffolding stands are spanned between the two scaffolding stays. ing. Therefore, even if it is a stepped stair veranda, the scaffolding platform supported by the two vertically arranged struts will be firmly placed, and the outer wall of the stair veranda can be safely cleaned. can do.

  According to the configuration of the second aspect of the present invention, the support body is further supported in the stair veranda by being supported by the auxiliary strut whose one end is in contact with the tread surface above the tread surface on which the vertical strut is erected. It will be firmly supported by.

  According to the configuration of claim 3 of the present invention, the staircase veranda construction scaffold has a plurality of treads arranged in a step shape, and a plurality of treads between the lower floor landing and the upper floor landing. A vertical column having a lower end abutted on is disposed. At the upper end of each vertical strut, a pressing part that presses the back of the upper floor staircase is arranged, and by operating the jack part of the vertical strut, each support is supported by the back of the stair veranda with the vertical strut and the tread surface It will be supported to stretch between. In this state, each vertical column is provided with a scaffold base stay protruding to the side wall of the staircase veranda, and the scaffold base is bridged between adjacent scaffold base stays. Thereby, as for the scaffolding, a plurality of scaffolding will be installed in a step shape between the lower floor landing and the upper floor landing, and the outer wall can be cleaned even on the stairs veranda.

  According to the structure of Claim 4, each support body is further supported in the stair veranda by being supported by the auxiliary strut whose one end is in contact with the tread surface above the tread surface on which the vertical strut is erected. It will be firmly supported.

  Moreover, according to the structure of Claim 5, the press part which presses the back surface of an upper layer step is a press body arrange | positioned on the extension line of a vertical support | pillar, and the width direction of the back surface of an upper layer step. Since the back surface of the upper stairs is pressed by the sub-pressing body disposed at a position apart from each other, each support body can be supported more firmly.

  According to the structure of Claim 6, the press body arrange | positioned by the press body base arrange | positioned at the front-end | tip of a vertical support | pillar so that rotation along the inclined surface of the back surface of an upper-layer staircase is connected with an adjacent vertical support | pillar. Since it is connected by the auxiliary stay, when pressing the back surface of the upper layer staircase with the pressing body, the pressing body that tries to move along the upper surface of the upper layer staircase can be suppressed by the connection auxiliary stay. Therefore, when adjusting the jack part of a vertical support | pillar, the force which presses the back surface of an upper-layer staircase can be concentrated on the set position.

  According to the structure of Claim 7, since the sub-pressing body disposed at a position away from the pressing body along the width direction of the back surface of the upper layer staircase is connected to the auxiliary strut, it is above the back surface of the upper layer staircase. It is possible to suppress the sub-pressing body that is about to move along the auxiliary strut with the auxiliary strut. Therefore, when adjusting the jack part of a vertical support | pillar, the force which presses the back surface of an upper-layer staircase can be concentrated on the set position.

It is a whole front view which shows the scaffold of embodiment in this invention. It is the perspective view which looked at a part of scaffold of FIG. 1 from the back surface of FIG. It is the same side view. It is a support body block diagram which shows the connection state of the press body of one Embodiment. It is a support body block diagram which shows the connection state of the sub-pressing body of one Embodiment. It is an enlarged view which shows the press part in FIG. It is an assembly sectional view showing a lock pin. It is a disassembled perspective view which shows the scaffold base in FIG. It is a perspective view which shows the landing scaffold installed in an upper landing. It is a front view of the landing scaffold in FIG. It is a top view of the landing scaffold in FIG. It is a side view which shows the state which performs a cleaning construction using a scaffold.

  Next, an embodiment according to the construction scaffold of the present invention will be described based on the drawings. The stair veranda construction scaffold (hereinafter referred to as construction scaffold) according to the present invention can be suitably used as a scaffold installed in a high-rise house that is blown by a building wind. It can also be applied to installed high-rise housing. As shown in FIG. 1, the stairs veranda 1 includes a plurality of treads 3 in the stairs 2 and a lower floor landing floor (hereinafter referred to as a lower landing) 4 on the lower stage of the tread 3 arranged at the lowest level. And the upper floor landing floor (hereinafter referred to as the upper landing) 5 on the upper stage of the tread 3 arranged at the top, and the lower landing 4 and the upper landing 5 are placed on the outside of the tread 3 It is assumed that it is composed of a staircase veranda side wall (hereinafter referred to as a side wall) 7 to be provided and a back surface (hereinafter referred to as an oblique ceiling wall) 9 of the upper stairs of the plurality of treads 3.

  FIG. 1 is an overall front view of a construction scaffold (hereinafter, simply referred to as a scaffold) M according to an embodiment, FIG. 2 is a perspective view of a part thereof viewed from the back, and FIG. 3 is a side view thereof. The scaffold M is configured by connecting a single stair scaffold 10 installed on the stairs 2 and landing scaffolds 10A and 10A installed on the lower landing 4 and the upper landing 5. In addition, since the scaffold M is used for work in a super high-rise house, for example, even if it is covered with a building wind, it is firmly supported by the staircase veranda 1 so that it does not tilt and does not fall. It is configured to work.

  As shown in FIGS. 1 to 3, the stair scaffolding 10 installed on the staircase 2 includes a pair of support bodies 11 and 11 that are erected on the two-step treads 3 and 3, and a pair of support bodies. 11 and 11 are provided with a scaffolding base 16 positioned outside the side wall 7 at a position away from the side wall 11. Each support body 11 has a lower end abutted against a stepped surface 3 arranged in a step shape, and a vertical column 12 having a pressing portion 13 that presses the oblique ceiling wall 9 on the upper end, and a lower end with an upper stepped surface 3. The support column 14 is connected to the pressing part 13 in contact with the pressing unit 13, and the above-described scaffolding stay 15 protrudes from the vertical column 12 toward the side wall 7. The scaffold base 16 is bridged over a plurality of scaffold base stays 15.

  The vertical column 12 in the embodiment includes a column main body 121 formed in a rectangular tube shape and a jack portion 122 disposed at a lower portion of the column main body 121. A pressing portion 13 is formed on the upper portion of the vertical column 12. In addition, the vertical struts 12 are provided with base portions of scaffolding stays 15 at two locations, an upper end portion and an intermediate portion. A mounting portion 151 for slidably fitting a square cylindrical column main body 121 is formed at the base portion of the scaffold base stay 15. In addition, in the support | pillar main body 121, when the length is long and it does not enter an elevator, you may divide | segment into 2 with respect to the length direction. The jack portion 122 is configured so that the height of the vertical column 12 can be adjusted and the pressing portion 13 disposed at the tip of the vertical column 12 can be pressed against the oblique ceiling wall 9. The jack portion 122 includes a screw rod 122a having a male screw portion and a nut member 122b that is screwed to the screw rod 122a, and a flange plate 123 that contacts the tread surface 3 or the lower landing 4 is attached to the lower end portion. .

  As shown in FIGS. 4 to 6, the pressing portion 13 is an upper end portion of the vertical column 12, a rectangular tube-shaped pressing body base 131 extending from the vertical column 12 toward the width direction of the oblique ceiling wall 9, A rectangular cylindrical slider 132 that can slide in the pressing body base 131 and a pressing body 134 that presses the oblique ceiling wall 9 are provided. The pressing body 134 is formed to have a rectangular plate-shaped pressing plate 134a that can be pressed by contacting the oblique ceiling wall 9, and an attachment piece 134b that protrudes from the pressing plate 134a toward the pressing body base 131. The piece 134b is rotatably attached to a pair of protruding pieces 133 protruding upward from the pressing body base 131. Then, the pressing plate 134a is formed so that the contact surface of the pressing plate 134a with the inclined ceiling wall 9 can be brought into full contact with the inclined ceiling wall 9 by rotating according to the inclination angle of the inclined ceiling wall 9. As shown in FIGS. 4 and 6, the attachment piece 134 b of the pressing body 134 has a connection auxiliary stay with one end attached to the upper end of one vertical column 12 that is arranged in the upper stage and constitutes the stair scaffolding 10. The other end of 19 is mounted. Thereby, when the diagonal ceiling wall 9 is pressed by the pressing body 134, the pressing body 134 that attempts to move along the upper side of the diagonal ceiling wall 9 can be suppressed by the connection auxiliary stay 19. Therefore, when adjusting the screw of the jack portion 122 of the vertical column 12, the force for pressing the oblique ceiling wall 9 can be concentrated at the set position.

  The connection auxiliary stay 19 is provided with a jack portion 191 that can be screw-adjusted at an intermediate portion so as to give an appropriate tension force of the connection auxiliary stay 19 between the pair of vertical struts 12 and 12 constituting the stair scaffolding 10. It is configured.

  In addition, as shown in FIG. 6, a square cylindrical sub-pressing body base 135 is slidably fitted to the slider 132 at a position away from the pressing body base 131 toward the veranda chamber side. Yes. As shown in FIG. 5, a sub-pressing body 137 is disposed above the sub-pressing body base 135 so as to press the oblique ceiling wall 9. Similar to the pressing body 134, the sub pressing body 137 is a rectangular plate-shaped pressing plate 137a that can be pressed in contact with the oblique ceiling wall 9, and a mounting piece 137b that protrudes from the pressing plate 137a toward the sub pressing body base 135 side. The attachment piece 137b is rotatably attached to a pair of protruding pieces 136 protruding upward from the sub-pressing body base 135. Then, the pressing plate 137a is formed so that the contact surface of the pressing plate 137a with the oblique ceiling wall 9 can be brought into full contact by rotating according to the inclination angle of the oblique ceiling wall 9. Since the slider 132 is slidably disposed on the pressing body base 131, the sub pressing body base 135 can be pressed at an appropriate position on the oblique ceiling wall 9. When the position is determined, the pressing body base 131 and the slider 132, and the slider 132 and the auxiliary pressing body base 135 are fixed by the lock pins 17 shown in FIG.

  As shown in FIGS. 5 and 6, one end of the auxiliary column 14 is attached to the attachment piece 137 b of the sub-pressing body 137. The auxiliary strut 14 is supported at its lower end by the upper tread surface 3 of the tread surface 3 on which the vertical strut 12 is supported, and is connected to the attachment piece 137 b of the sub-pressing body 137 of the pressing portion 13. The auxiliary strut 14 is disposed on the base portion side and the first pipe portion 141 disposed on the distal end side with the jack portion 143 interposed therebetween in order to support the auxiliary pressing body 137 so as to stretch between the sub pressing body 137 and the tread surface 3. The second pipe portion 142 is divided.

  Since the auxiliary support column 14 is disposed obliquely with respect to the vertical support column 12, the lower end portion of the second pipe portion 142 is provided with an L-shaped angle support member 144 in order to press the corner portion of the tread surface 3. Via the tread surface 3. A first adjuster 145 is screwed to the lower end portion of the first pipe portion 141 so that the height of the first pipe portion 141 can be adjusted, and a second adjuster 146 is provided at the upper end portion of the second pipe portion 142. The height of the second pipe portion 142 can be adjusted by screwing. As a result, the auxiliary pressing body 137 trying to move along the upper side of the oblique ceiling wall 9 can be suppressed by the auxiliary column 14. Therefore, when adjusting the jack part 122 of the vertical support | pillar 12, the force which presses the diagonal ceiling wall 9 can be concentrated on the set position. Further, the angle support member 144 of the auxiliary column 14 and the column main body 121 of the vertical column 12 are connected to each other by the tampackle 18 via ear pieces 144a and 121d.

  As shown in FIG. 7, the lock pin 17 according to the embodiment is provided with a magnet 173 between the head 171 and the body portion 172, for example, one of the insertion holes 131 a of the pressing body base 131 and the slider 132. When one of the insertion holes 132a is inserted, the magnet 173 is attracted to the pressing body base 131 and the lock pin 17 is fixed.

  As shown in FIG. 3, one end of the scaffolding stay 15 is fitted onto the column main body 121 of the vertical column 12 and protrudes outward from the side wall 7. That is, as shown in FIG. 8, the base portion of the scaffolding stay 15 is extended to the outside of the side wall 7 from the mounting portion 151 and the mounting portion 151 formed by a square pipe that is externally fitted to the column main body 121. An arm portion 152 is formed. The mounting portion 151 is formed with a fitting hole 151 a for fitting the column main body 121 and a groove portion 151 b for fitting the base portion of the arm portion 152. In addition, a plurality of insertion holes 121 c are formed in the column main body 121, and the lock pin 17 is inserted into one of the insertion holes 151 c formed in the side portion of the mounting portion 151 and the insertion hole 121 c of the column main body 121. By inserting the lock pin 17, the scaffold base stay 15 and the column main body 121 are fixed.

  In the arm portion 152, a stopper piece 153 serving as a stopper of a handrail 20 described later is disposed on the distal end surface, and a boss portion 154 protruding from both sides of the arm portion 152 is disposed on the side surface of the distal end portion. Further, an insertion hole 152 a through which the lock pin 17 is inserted is formed in the vicinity of the mounting portion of the arm portion 152.

  Note that two scaffolding stays 15 are arranged in the vertical direction on one vertical column 12 in order to bridge the scaffolding 16 to the adjacent support bodies 11 having steps. The mounting portion 151 of the scaffold base stay 15 is externally fitted to the column main body 121 of the vertical column 12, and the insertion hole 121c formed in the column main body 121 and any one of the plurality of fitting holes 151a of the mounting unit 151 And are locked by the lock pin 17. This position is arranged in the vicinity of the upper end portion and the middle portion of the column main body 121. In order to maintain the scaffold base 16 in a horizontal state, the position of the mounting portion 151 is set to a step height of the tread surface 3 on the stairs. It is determined by adjusting the height of the jack portion 122.

  As shown in FIG. 8, a scaffold base 16 is bridged between the scaffold base stays 15 of the two adjacent vertical struts 12. A handrail 20 and a safety cover 21 are mounted so as to surround the scaffold base 16, and a gap cover 22 is mounted between the scaffold base 16 and the stairs 2, and a stair step 23 for boarding the scaffold base 16. Is suspended.

  The handrail 20 includes a stay support portion 201 having four corners of stay fitting groove portions 201a for preventing the distal ends of the arm portions 152 of the pair of scaffolding stays 15 from spreading in the horizontal direction, and an upper portion of the stay support portion 201. And a guard fence 202 having a plurality of lateral struts 202a welded to the inner side surface of each stay fitting groove 201a. The protective fence 202 is arranged so as to be able to surround the worker from three sides except the stair veranda 1 side. On the inner side surface of the protective fence 202, a plate-shaped safety cover 21 that can surround the operator from three sides except for the stair veranda 1 side is mounted similarly to the protective fence 202. At the lower end portion of the safety cover 21, female screw fittings 211 for mounting the scaffold base 16 are arranged at four locations.

  The scaffold base 16 is inserted and arranged in the handrail 20 and the safety cover 21. The scaffold base 16 includes a plate main body 161 and a pair of mounting brackets 162 and 163 each having a fitting groove 164 formed in the front and rear ends of the plate main body 161 and fitted to the arm portion 152 of the pair of scaffold base stays 15. I have. An insertion hole 162 a through which the lock pin 17 is inserted is formed in the pair of mounting brackets 162 arranged on the base side of the plate body 161. An engagement groove 163 a that engages in the thickness direction of the boss portion 154 disposed on the side surface of the arm portion 152 is formed in the pair of mounting brackets 163 disposed on the outer front end side of the plate body 161. In addition, a base plate 165 that supports the stair step 23 is mounted on the top surface of the base of the plate body 161, and a hook 165a that hooks the step 231A at the upper end of the stair step 23 is disposed on the base plate 165. Has been. The plate body 161 is formed with four screw insertion holes 161a through which the thumbscrews 24 to be screwed into the female screw fitting 211 of the safety cover 21 are inserted.

  In the stair step 23, a plurality of steps 231 for ascending and descending the scaffold base 16 are supported by handrail bars 232, 232 arranged on both sides. The uppermost step 231A is hooked on the hooking portion 165a of the base plate 165.

  Further, a resin gap cover 22 for preventing an operator or a tool from entering is installed in the gap between the upper surface of the side wall 7 of the staircase 2 and the plate body 161 of the scaffold base 16. The gap cover 22 is disposed between the stair step 23 and the scaffolding base 16, and has an L shape with an upper surface portion 221 placed on the base plate 165 and a side surface portion 222 extending directly below the upper surface portion 221. Is formed. Further, a notch 223 is formed in the latching portion 165 a of the base plate 165 in the gap cover 22. Further, the lower surface of the side surface portion 222 is formed to be inclined in accordance with the inclination angle of the staircase 2, and the support portion is supported by contacting the side wall 7 so that the gap cover 22 does not wobble on the back surface side of the side surface portion 222. 222a is arranged.

  As shown in FIGS. 1 and 9 to 11, a landing scaffold 10 </ b> A installed in the lower landing 4 or the upper landing 5 includes a support 11 </ b> A <b> 1 arranged on an extension line of the stair scaffold 10 and a support 11 of the stair scaffold 10. And a support 11A2 arranged orthogonal to a line connecting the support 11A1 and the support 11A1. 9 to 11 illustrate the landing scaffold 10A in the upper landing 5 and the landing scaffold 10A installed in the lower landing 4 is configured similarly. Around the upper landing 5 are formed a side wall 7A1 (7A) extending from the side wall 7 of the stairs 2 and a front side wall 7A2 (7A) arranged on the front side of the stairs 2 and orthogonal to the side wall 7, A horizontal landing plate ceiling wall 9A is formed.

  Each support 11A (11A1, 11A2) is disposed above each vertical support 12A and is connected to each vertical support 12A, and the vertical support 12A (12A1, 12A2) standing from the same landing 5 respectively. Supporting jack portion 31A (31A1, 31A2) arranged between support post 13A (13A1, 13A2) and vertical support post 12A and support post connecting portion 13A to press support post connecting portion 13A toward landing ceiling wall 9A. And scaffolding stays 15A (15A1, 15A2) mounted on the vertical struts 12A so as to protrude outward from the vertical struts 12A and the side walls 7A1 and 7A2 of the upper landing 5 respectively. The scaffold base stay 15A1 of the support 11A1 and the scaffold base stay 15A2 of the support 11A2 extend in a direction orthogonal to each other. The scaffold base stay 15A1 arranged in the lower landing 4 or the upper landing 5 has the same configuration as the scaffold base stay 15 in the stair scaffold 10 installed in the stairs 2.

  The landing platform 10A is installed on the side extending from the lower landing 4 to the upper landing 5 in the upper landing 5 (the state shown in FIG. 9), and the upper landing 5 from the upper landing 5 to the upper floor. One set is installed on the side toward the lower landing 4 (not shown in FIG. 9). Accordingly, the scaffold base stay 15A1 in the landing platform 10A is set to the same height as the scaffold base stay 15 disposed on the uppermost support 11 installed on the stairs 2, and the scaffold base 16A1 (16A) is provided. It will be suspended. Further, the scaffold base 16A2 (16A) is suspended on the pair of scaffold base stays 15A2 protruding outward from the front side wall 7A of the upper landing 5. The scaffold base 16 </ b> A has the same configuration as the scaffold base stay 15 in the stair scaffold 10 installed on the stairs 2.

  The column connecting portion 13A is provided with a rectangular tube-shaped pressing pipe 32A (32A1, 32A2) that presses the upper surface in contact with the landing ceiling wall 9A. The pressing pipe 32A has a square cross section and a cross shape in plan view. A part of the formed cross-shaped cross arm 33 can be internally fitted via a square cylindrical slide pipe 34A (34A1, 34A2). The vertical column 12A includes a column main body 121A and a jack portion 122A (122A1, 122A2) that adjusts the column main body 121A so that the column main body 121A can be moved up and down, similarly to the vertical column 12 installed on the stairs 2. By turning the screw part arranged in the jack part 122A, the support body 121A can be raised and the landing wall 9A can be pressed by the pressing pipe 32A. A buffer member may be provided on the upper surface of the pressing pipe 32A1 to press the landing ceiling wall 9A. In the embodiment, the connecting jack portion 31A (31A1, 31A2) is arranged between the supporting column connecting portion 13A and the supporting column connecting portion 13A using the vertical supporting column 12 that arranges the vertical supporting column 12A on the stairs 2.

  The connection jack portion 31A includes a male screw portion 311, a lower nut portion 312 that is disposed on the vertical struts 12A1 and 12A2 side and is screwed into the male screw portion 311, and a male side that is disposed on the strut connection side 31A1 and 31A2 side. The upper nut portion 313 is screwed into the screw portion 311. An adjuster 314 is attached to the lower nut portion 312 so that the strut connecting portion 13A can be pressed and adjusted toward the landing ceiling wall 9A.

  Further, a plurality of insertion holes (not shown) are formed in the pressing pipe 32A, the slide pipe 34A, and the cross-shaped cross arm 33 along the insertion direction of the cross-shaped cross arm 33, and the lock pin 17 described above is formed in the insertion hole. It is inserted. The cross-shaped cross arm 33 can be disposed at an appropriate position by inserting the lock pin 17 into an appropriate position of the insertion hole of the slide pipe 34A.

  Next, the assembly procedure of the scaffold M configured as described above and the work procedure of the outer wall construction will be described.

  First, the respective parts of the plurality of divided stair scaffolds 10 and landing scaffolds 10A are transported by elevator to the level where work is performed. The divided parts are the divided bodies such as the vertical struts 12 and 12A, the scaffolding stays 15 and 15A, the scaffolding bases 16 and 16A, the auxiliary struts 14 and 140, the pressing portion 13 and the strut connecting portion 13A, all of which are elevators. It is formed in a size that can be stored in the box.

  After carrying the above part into the staircase veranda 1, the landing scaffold 10 </ b> A is assembled to the plurality of stair scaffolds 10, the lower landing 4, and the upper landing 5 on the stairs 2. The stair scaffolding 10 installed on the staircase 2 is formed by assembling the column main body 121 and the jack portion 122 to form the vertical column 12, and then assembling the scaffolding base stay 15 to the vertical column 12 to press the upper end of the column main body 121. 13 is installed. The flange plate 123 is brought into contact with the tread surface 3, and the pressing body 134 of the pressing portion 13 is brought into contact with the oblique ceiling wall 9 according to the inclination angle of the oblique ceiling wall 9. The jack part 122 is operated and the vertical support 12 is pressed and stretched between the tread surface 3 and the oblique ceiling wall 9. Moreover, the connection auxiliary stay 19 is assembled | attached between the vertical support | pillars 12 and 12 which have a level | step difference and are arrange | positioned adjacently, and the movement of the press part 13 diagonally upward is prevented. Further, an auxiliary column 14 for supporting the vertical column 12 is attached to constitute the support 11. In addition, in the landing scaffold 10A installed in the lower landing 4 and the upper landing 5, the vertical support 12A, the connecting jack 31A, and the support connecting part 13A are assembled and pressed between the lower landing 4, the upper landing 5 and the landing ceiling wall 9A. Stretch. In the lower landing 4 and the upper landing 5, the landing wall 9 </ b> A is pressed by adjusting the connecting jack portion 31 </ b> A disposed between the vertical support 12 </ b> A and the support connecting portion 13 </ b> A. By installing the supports 11 and 11A on the stairs 2, the lower landing 4 and the upper landing 5, the stairway 2, the lower landing 4 and the upper landing 5 constitute a scaffold M without the scaffolding platforms 16 and 16A. Thereafter, the handrail 20 and the safety cover 21 are suspended from the upper floor on the pair of scaffolding stays 15 arranged at the same height, and attached to the scaffolding stays 15 and 15A. That is, the stay support portion 201 of the handrail 20 is fitted to the arm portion 152 of the pair of scaffolding stays 15 and 15A, and the distal end surface of the stay supporting portion 201 at the distal end is brought into contact with the stopper piece 153 of the scaffolding stay 15. To position. Then, the safety cover 21 is stored in the protective fence 202 of the handrail 20.

  Next, the scaffold bases 16 and 16A are bridged. The pair of mounting brackets 162 of the scaffolding bases 16 and 16A are fitted into the arm portion 152 of the scaffolding base stay 15, and the pair of mounting brackets 163 are fitted into the boss portions 154 of the arm portion 152. At the same time, the plate body 161 is accommodated in the safety cover 21. Then, the four thumbscrews 24 are inserted into the screw insertion holes 161 a of the plate body 161 and engaged with the female screw fitting 211 of the safety cover 21, and the scaffold bases 16 and 16 A are fixed to the handrail 20. Further, the lock pin 17 is inserted by aligning the insertion holes 152a of the scaffolding stays 15 and 15A with the insertion holes 162a of the mounting bracket 162 of the scaffolding base 16. As a result, the scaffolding bases 16 and 16A are fixed to the safety cover 21 and are also integrally fixed to the scaffolding base stays 15 and 15A.

  Finally, the stair step 23 is hooked on the hook portion 165a of the base plate 165 of the scaffolding platform 16 and 16A, and the gap cover 22 is attached between the staircase 2 and the scaffolding platform 16 to form the stair scaffolding. . A plurality of such stair scaffolds are installed on the staircase 2 and the landing scaffold 10A is installed in the lower landing 4 and the upper landing 5 to constitute the scaffold M.

  When the assembly of the scaffold M is completed, for example, a veranda cleaning operation is performed. In performing the cleaning operation, in order to perform water cleaning or bio-cleaning, it is desirable to prevent water or paint from falling to the ground by placing a waterproof sheet (not shown) on the site where the cleaning operation is performed.

  Next, cleaning work is performed. As shown in FIG. 12, the worker P moves from the landing scaffold 10 </ b> A (not shown in FIG. 12) installed in the lower landing 4 (not shown in FIG. 12) to the stairway scaffold 10 and the upper landing. The cleaning work will be performed in the order of the landing platform 10A installed at No.5. In the stair scaffold 10 and the landing scaffold 10A, a predetermined work is performed from the stair step 23 to the plate body 161 of the scaffold bases 16 and 16A. In addition, it is desirable for the worker P to work by being suspended by the lifeline R.

  In the case of cleaning work, the content of work performed using the scaffold M according to the embodiment mainly performs water washing or bio-cleaning work on the side wall 7 of the staircase veranda 1 and the landing side wall 7A. The side wall 7 is cleaned in order.

  When the work at the predetermined place is completed, the worker P disassembles the scaffold M.

  As described above, in the scaffold M of the embodiment, the landing scaffold 10A (not shown in FIG. 12) is installed so as to stretch between the landing landing ceiling wall 9A in the lower landing 4 and the upper landing 5 and on the stairs 2 , The stair scaffolding 10 and the landing scaffolding 10A can be installed by supporting the vertical struts 12 so as to stretch between the tread surface 3 of the stairs 2 and the oblique ceiling wall 9 of the upper floor. It can be configured, and the outer wall can be constructed on any floor of a high-rise house. In addition, the work can be performed safely and the work period can be shortened, so that the work can be performed at low cost.

  A pressing portion 13 that presses the oblique ceiling wall 9 is disposed on the oblique ceiling wall 9 along the length direction of the oblique ceiling wall 9 and is pressed strongly by the operation of the jack portion 122 and has a step. By connecting the pressing portions 13 of the support bodies 11 adjacent to each other by the connection auxiliary stay 19, the oblique ceiling wall 9 can be pressed without moving the pressing portion 13 upward, so that the vertical column 12 is firmly supported. can do.

M, Scaffolding (scaffolding for stairs veranda)
1, Stairs veranda 2, Stairs 3, Tread 4, Lower landing 5, Upper landing 7, Side wall (Stairs veranda side wall)
9. Diagonal ceiling wall (the back of the upper floor staircase veranda)
DESCRIPTION OF SYMBOLS 10, Single scaffold 11, Support body 12, Vertical support | pillar 13, Press part 131, Press body base 132, Slider 134, Press body 135, Sub press body base 137, Sub press body 14, Auxiliary support post 15, Scaffold stand stay 16 , Scaffolding stand 19, Linkage auxiliary stay

Claims (7)

It is a scaffold for stair verandah construction installed on the stair veranda of a high-rise house,
It is installed between the two-step treads in the stairs arranged with steps and the back surface of the upper stairs formed in an oblique plane and disposed immediately above the treads,
A vertical column having a jack part whose height is adjustable at one end and abutting against the tread surface, and a pressing unit that presses the back surface of the upper layer step on the other end, and the vertical column. A support provided with a scaffold base stay protruding to the outer wall side of the staircase veranda,
The scaffolding platform on which the operator works is bridged on the two scaffolding stays in the two support bodies installed adjacent to the two-step treads having a step. A staircase veranda for construction.   The stair veranda work according to claim 1, wherein the support is provided with auxiliary struts that stand up from a tread surface above the tread surface on which the vertical strut stands and support the vertical strut. Scaffolding. It is a scaffold for stair verandah construction installed on the stair veranda of a high-rise house,
A plurality of treads in the stairs arranged with steps, a floor surface of the upper floor landing arranged on the upper surface side of the tread arranged on the uppermost stage, and arranged on the lowermost stage The floor surface of the lower floor landing located below the tread, the side wall of the staircase veranda disposed outside the stair landing between the upper floor landing and the lower floor landing, and in an oblique plane shape Formed and installed between the upper surface of the upper stairs arranged just above the tread surface,
One end of the lower floor landing or the floor of the upper floor landing or the tread of the staircase is supported so that one end has a jack portion whose height can be adjusted, and the upper staircase is supported at the other end. A support body is provided that includes a vertical strut configured by disposing a pressing portion that presses the back surface thereof, and a scaffolding stay that protrudes from the vertical strut to the side of the stair veranda side wall.
A plurality of scaffolding platforms are formed in a step shape by bridging a scaffolding platform on which the operator works on the stays for the scaffolding platforms in the adjacent support bodies installed on at least two steps of treads having steps. A staircase veranda construction scaffold characterized by that.   The support disposed on the staircase is provided with auxiliary struts that stand up from the tread surface above the tread surface on which the installed vertical strut stands to support the vertical strut. The staircase veranda construction scaffold according to claim 3.   The pressing portion is disposed on an extension line of the vertical support and presses the back surface of the upper step, and the upper layer at a position away from the pressing member along the width direction of the back surface of the upper step. The scaffold for stair verandah construction according to claim 2, further comprising a sub-pressing body that presses the back surface of the staircase.   The pressing body is connected to a pressing body base mounted on the tip of the vertical column so as to be rotatable along the inclined surface of the back surface of the upper step, and to the adjacent vertical column having a step. The stair veranda construction scaffold according to claim 5, wherein the scaffold is connected via a connection auxiliary stay.   6. The sub-pressing body is rotatably connected to a sub-pressing body base that is slidably disposed on the pressing body base, and one end of the auxiliary column is connected. Or the scaffold for the stair veranda construction described in 6.

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