EP0632171A1 - Plate-forme d'échafaudage repliable - Google Patents

Plate-forme d'échafaudage repliable Download PDF

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Publication number
EP0632171A1
EP0632171A1 EP94108984A EP94108984A EP0632171A1 EP 0632171 A1 EP0632171 A1 EP 0632171A1 EP 94108984 A EP94108984 A EP 94108984A EP 94108984 A EP94108984 A EP 94108984A EP 0632171 A1 EP0632171 A1 EP 0632171A1
Authority
EP
European Patent Office
Prior art keywords
pawl
stage
support
platform
folded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94108984A
Other languages
German (de)
English (en)
Inventor
Artur Schwörer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Peri GmbH
Original Assignee
Peri GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peri GmbH filed Critical Peri GmbH
Publication of EP0632171A1 publication Critical patent/EP0632171A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/06—Consoles; Brackets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/06—Consoles; Brackets
    • E04G5/062—Consoles; Brackets specially adapted for attachment to building walls

Definitions

  • the invention relates to a foldable scaffold stage, in which the inclined supports, railing posts and, if necessary, in the working position, supports extending from a stage floor downwards to at least one support of the stage floor and which have a securing device which has the stage in the unfolded and folded state backs up.
  • the securing device has a securing bolt which has to be inserted through holes in one or two positions to block the pivoting movement, the diameter of which is not much larger than that Diameter of these bolts. This threading the locking bolt into these holes is often tedious, especially if the holes are not exactly aligned due to small deviations in the pivoting position of the movable part.
  • the holes for the safety bolt cannot be made as large as necessary, otherwise the locking of the swiveling parts will have too much play.
  • the invention has for its object to improve such safety devices so that their handling is very simple.
  • the securing device on the end of a support of the stage floor facing away from a building wall has a pivotable latch which secures the railings and inclined support when the stage is open.
  • An advantage of the invention is that pivoting a pawl to lock the pivotable parts of a stage is much easier and more convenient than threading bolts into holes.
  • the securing device can be designed in such a way that the blocking of the pivoting movement is achieved with the same degree of certainty as when securing bolts are inserted through aligned holes.
  • Doka folding platforms system overview Doka folding platforms, edition 02/1992
  • a swiveling hook to the lower end of a support that runs down from the stage floor, with which this support, when it folds down to the underside of the platform the stage floor is folded up, is held in this position by hanging the hook by hand in a bolt arranged on another part of the stage.
  • this hook is only a transport lock that prevents the support from swinging out unintentionally. This hook locks the support when the stage is folded and is completely away from a safety device that is intended to secure stage parts when the stage is open.
  • the pawl can engage any pivotable parts to block movement.
  • the pawl can reach behind the inclined support when the stage is folded up, or, if present, can reach behind a support that runs parallel to the wall when the stage is open and is pivotally mounted on the stage floor, or another part that is folded up against the stage floor when the stage is folded up .
  • the securing of a movable stage part or the blocking of its movement can also take place indirectly by blocking a movable part which, in this locked position, bears against another movable part in a blocking manner.
  • the part, the movement of which is blocked by the pawl, expediently has a bolt which is engaged by the pawl.
  • the pawl itself can be designed differently in embodiments of the invention.
  • the pawl has a surface at a distance from its pivot axis on at least one of its edges, which surface cooperates with at least one of the pivotable parts for the purpose of pivoting the pawl about its pivot axis.
  • the pivoting movement thus exerted on the pawl can take place in embodiments of the invention against a spring action or also against the action of gravity.
  • the pawl is therefore mounted eccentrically, so that its own weight strives to pivot the pawl into a stable equilibrium position, but in particular into its locked position.
  • a weight can be attached to the pawl, which, if necessary in addition to the dead weight of the pawl, strives to make this z. B. to move into its locked position or to hold in contact with another part that abuts an edge surface of the pawl. It can be arranged above the pivot axis.
  • the pawl has a cutout which cooperates with at least one bolt which is fastened to a pivotable part of the stage. In embodiments of the invention, this section is arranged below the eccentrically arranged pivot axis of the pawl.
  • the acting on the pawl, automatically acting force can be provided so that it strives to always move the pawl into its locked position, even if, in embodiments of the invention, by their interaction with the foldable parts when collapsing or unfolding these stage parts is pivoted against this force.
  • the arrangement can be chosen so that the pawl, when it is swung out of its locked position by hand, is moved over a dead center position with respect to the force acting on it and initially remains in its position releasing the movable parts until it is moved by these movable parts is moved over the aforementioned dead center, so that the force acting on it then moves the pawl towards its locking position again.
  • the movement phases and the additional force can also be provided differently in other embodiments of the invention.
  • the surfaces that move with the moving parts of the stage for the purpose of moving the Pawl work together, be provided anywhere on the pawl. It is only essential that the movement of the pawl is derived from the movement of a movable stage part in at least one movement phase.
  • embodiments of the invention can be designed so that the movement of the pawl into the locking position takes place automatically, whereas its movement out of the locking position must be done by hand.
  • the joint connecting these two sections is arranged such that its pivot axis lies outside the longitudinal axis of the two sections and the inclined support must be moved into that position through its dead center position , in which the movement of the joint is limited by contact with a stop.
  • the diagonal support must therefore first be moved through a position when the articulation axis is arranged outside the axis of the sections, in the initial phase of this movement the ends of the diagonal support initially move somewhat apart before the collapsing of the diagonal support sections is possible. This prevents the inclined support from accidentally buckling.
  • the scaffolding stage has a stage floor 1, which can expediently consist of wooden boards which rest on a metal scaffolding console 2, which in turn has horizontally extending beams 3 in the working position.
  • a support 5 which extends downwards along a building wall 17 and which has a shoe 6 at its upper end which is used to hang the scaffolding platform on fastening devices which are provided in the wall section which has already been completed.
  • the lower end of the support 5 is connected to the end of the support 3 facing away from the wall by an inclined support, which consists of two sections 7 and 8 of metal tubes with a rectangular profile, which are connected to one another by a joint 9.
  • the inclined support 7, 8 is articulated at its two ends by articulated bolts 10 and 11 on the support 5 and on the end of the support 3 facing away from the wall.
  • a railing post 12 made of a rectangular profile made of metal is pivotally mounted at its lower end about the same bolt 11.
  • an approximately U-shaped part is provided at the lower end of the post 12, which has a web 14 extending at right angles to the post axis 13, at the end of which a short leg 15 connects, which runs parallel to the post axis 13 and at its end around the bolt 11 is pivotally mounted.
  • suspension devices 16 are provided for an intermediate link to a crane rope, which consists of four chains, one end of which can be hooked onto the crane hook and the other ends of these hooks or similar suspension devices 16.
  • the joint 9 is located outside the axes of the supports 7 and 8 and therefore also outside the line of force of the supporting force which the inclined support 7, 8 has to take up in the working position (e.g. extended position).
  • the hinge-side end of the section 8 rests against a stop of the section 7, as a result of which the angular movement between the sections 7 and 8 is limited in one direction and the joint 9 does not move in the direction away from the wall when loaded can.
  • the end of the section 8 of the inclined support 7, 8 is extended beyond its articulation on the hinge pin 11 by an arm 18 which extends at an obtuse angle to the longitudinal axis of the section 8.
  • This angle is chosen so that it extends in the working position of the inclined support with a section 22 approximately in the plane of flanges 23 of the carrier 3 and possibly also bears against the floor covering of the stage or against a stop of the carrier 3.
  • An on the edge section 22 adjoining the edge section 24 of the arm 18 runs somewhat angled relative to the edge section 22 and carries a bolt 25 at its end.
  • the arm 18 is fork-shaped with two prongs, so that the sections 14 and 15 of the railing post 12 lie between these two prongs can pivot about the bolt 11.
  • a securing device 20 has a pawl 21 which is pivotably mounted about a bolt 19 in the end of the carrier 3 facing away from the wall.
  • the distance between the two bolts 11 and 19 fastened in the carrier 3 and the shape of the U-shaped end of the railing post 12 with the web 14 and the leg 15 are selected such that the railing post 12 pivot about the bolt 11 by 90 ° can, without this lower end of the post 12 coming into contact with the bolt 19.
  • the corners between part 14 and parts 12 and 15 are chamfered by inclined surfaces 26 and 27.
  • a crossbar 28 is fastened to the railing post 12 in the vicinity of its lower end, which sits on the flanges 23 of the carrier 3 when the railing post 12 is fully extended and thus limits the opening movement in an approximately vertical position of the railing post 12.
  • the railing post 12 On the side facing the bolt 19, the railing post 12 has a projection 29 below the cross bar 28, which comes to rest when the post 12 is folded down about the axis 11 with a projection 30 or edge portion of the pawl 21 when the pawl 21 is in the 5 and thus prevents a pivoting movement of the post 12 around the hinge pin 11 from the opened position into the folded position and thus ensures the upright position of the railing post 12.
  • This projection 30 is followed by a cutout 31, the shape of which can be seen in FIG. 5 and which is cut relatively deep into the edge of the pawl 21.
  • the edge section 32 opposite the projection 30, which delimits the cutout 31, is adjoined by an obliquely running edge 33, which runs approximately at an angle of 30 degrees to a longitudinal center line of the cutout 31.
  • a rounded edge section 34 then adjoins a rounded corner, which extends at an angle of approximately 60 degrees to the edge section 33 and extends through a horizontal position in the position shown in FIG. 5 the bolt 19 extending plane extends beyond.
  • edge section 34 At the upper end of the edge section 34, in turn, forming an angle of approximately 60 ° is followed by an approximately horizontal edge section 35 in the pivoting position (blocking position) shown in FIG. 5, which is approximately circular over the eye for the bolt 19 Form passes, which then connects to the edge of the stop 30.
  • the edge line of the stop 30 which projects furthest to the left in FIG. 5 lies in the pivot position of the pawl 21 shown in FIG. 5 below the pivot axis of the pivot pin 19.
  • the edge portion 35 is at the greatest possible distance from the eye 36 for the pivot pin 19 a weight rod 37 is fastened, which extends transversely to the plane of the pawl 21 made of a flat material and whose ends in the position shown in FIG limit around the pin 19 clockwise.
  • the weight of the rod 37 strives to hold the pawl 21 in the locked position shown in FIG. 5 and to pivot it into this position.
  • the pivotable about the hinge pin 4 support 5 has at its lower end a bolt 38 which is engaged by the recess 31 of the pawl 21 when the stage 5 is folded up, when the support 5 is folded up against the stage floor, when this is in the Fig. 9 shown pivot position is located.
  • the support 5 has a U-shaped cross section in which it receives the inclined support sections 7 and 8 when it is folded onto the underside of the stage. In the folded position of the stage, therefore, in the position of the pawl shown in FIG. 9, because of its engagement in the bolt 38, no movement of the inclined support sections and thus the inclined support is possible, these parts are thereby secured.
  • a stop 42 is provided which, in one embodiment of the invention, is supported, for example in a manner not shown, on the bottom 44 of the bulge 40 and which, when the support 5 is folded up against the stage floor on the leg 15 on the folded railing post 12 comes to rest and holds it in this position.
  • the pawl 21 is pivoted counterclockwise from its position shown in FIG. 9 around the bolt 19, so that the weight rod 37 lies on the flanges 23 of the carrier 3 or the pawl in the position shown in FIG. 6 shown swivel end position.
  • the pawl releases the bolt 38 of the support 5, so that the pivoting movement of the support 5 around the pivot pin 4 is released.
  • the platform is then either slightly raised so that the support 5 pivots slightly about the bolt 4 so that the stop 42 is spaced from the leg 15 of the railing post 12 (FIG. 8), which pivots the railing post 12 in its from the stage floor approximately rectangular position around the Hinge pin 11 allowed.
  • the railing post 12 is pivoted about the bolt 11, so that first the edge of the leg 15 and then the inclined surface 26 slide along the stop 42 and the pivot position of the support 5 required for the pivoting movement of the post 12 around the bolt 4 is produced automatically.
  • the projection 29 on the railing post 12 or the corner or inclined surface 27 formed by the web 14 and the railing post 12 comes into contact with the weight rod 37, so that the pawl is pivoted clockwise around the hinge pin 19 against the force of gravity with which the weight pin 37 holds the pawl in this unlocked position.
  • the projection 29 can have inclined guide surfaces 43 on its lateral edges, which for the sake of clarity are only shown in FIGS. 8 and 9, but which are arranged at a distance from one another so that they only engage on the weight rod 37 which extends over the entire width of the carrier 3, but other parts of the pawl 21 can enter in the space between the two material triangles carrying the surfaces 43, for example in the position of the pawl shown in FIG. 5.
  • the stop 29 moves the pawl 21 only so far clockwise when the post 12 is raised that the weight rod 37 moves past its top dead center position, ie its position perpendicularly above the bolt 19. From here, the pawl 21 is pivoted further clockwise by the force of gravity or weight of the rod 37 until it assumes the blocking position shown in FIG. 5.
  • the dimensions can also be chosen such that the projection 29 when it hits the upper surface of the projection 30 in FIG. 5 the pawl 21 is pivoted a little bit counterclockwise until the projection 29 engages in the mouth of the cutout 31 and the pawl 21 engages again in its locking position shown in FIG. 5.
  • the bolt 11, about which the railing post 12 is pivotally mounted is arranged at a certain distance at right angles to the axis 13 of the railing post 12, the gravity of the post 12 acts on the post 12 at a moment-generating distance from the post 12, which holds the post 12 in its upright position even if the projection 29 does not happen to be held by the cutout 31.
  • the dimensions can also be chosen such that when the railing post 12 is pivoted up, the pawl 21 remains in its end position (unlocking position) determined by the pivoting in the counterclockwise direction.
  • the scaffolding platform is lifted by the crane into a position in which the support 5 can swing out completely.
  • the pawl 21 has already released the bolt 38 from the cutout 31 when it is pivoted counterclockwise for the first time. Since the support 5 already had to pivot somewhat about the bolt 4 for the purpose of erecting the railing post 12, the bolt 38 no longer finds the cutout 31 when the pawl 21 is pivoted clockwise into the locking position, but the pawl 21 lies down, if at all , with its inclined surface 33 on the bolt 38 and does not hinder further pivoting of the support 5.
  • the pawl 21 If the pawl 21 is in a position in which the bolt 25 no longer hits the inclined surface 33 when the arm 18 is pivoted up, it runs onto the projection 30 and thereby pivots the pawl clockwise past the dead center, after which the pawl 21 passes through the weight falls into its locked position and engages behind the bolt 25.
  • the stop 29 is also held in the opening of the mouth 31, so that in this working position the platform post 12 and the inclined support section 8 and thus the inclined support 7, 8 and the support 5 are held as long as the pawl 21 remains in the position shown in FIG. 5.
  • the pawl 21 is pivoted by hand into its unlocking position (FIG. 6) which limits its pivoting in the counterclockwise direction, so that the cutout 31 the bolt 25 and thus the pivoting movement of the inclined supports 7, 8 and thus the support 5 and also the pivoting movement of the railing post 12 releases.
  • parts of the railing post can in turn cooperate with the pawl 21 so that it pivots into the blocking position shown in FIG. 5, which limits the pivoting movement in the clockwise direction.
  • the bolt slides when the support 5 is folded up 38 along the inclined surface 33 upwards and pivots the pawl about the bolt 19 in the counterclockwise direction, but only to the extent that the pawl again in the position shown in FIG.
  • the pawl is moved by its weight, in particular given by the weight rod 37.
  • this movement can also be achieved by a suitable spring or spring combination.
  • a particular advantage of the invention is that to open the scaffolding platform, the latch only has to be pivoted once and that the same pivoting of the latch must be carried out when the scaffolding platform is folded up. All other movements of the safety device take place automatically. Nevertheless, the moving parts are secured in their swivel position both in the working position and when the platform is folded.
  • the pawl 21 always moves automatically into the locking position, whereas the movement from the locking position must always be done manually.
  • the pawl 21 is secured in the locked position by the shape of its cutout 31, which cooperates with several movable parts 25, 38 and by the force acting on it (weight or spring) in such a way that it cannot leave its locked position by itself without manual operation.
  • the pawl can also be arranged on the railing post or at the upper end of the inclined support. It is essential that it is arranged on the side of the stage facing away from the wall.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
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EP94108984A 1993-07-01 1994-06-11 Plate-forme d'échafaudage repliable Withdrawn EP0632171A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4321824 1993-07-01
DE4321824A DE4321824A1 (de) 1993-07-01 1993-07-01 Faltbare Gerüstbühne

Publications (1)

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EP0632171A1 true EP0632171A1 (fr) 1995-01-04

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Family Applications (1)

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EP94108984A Withdrawn EP0632171A1 (fr) 1993-07-01 1994-06-11 Plate-forme d'échafaudage repliable

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EP (1) EP0632171A1 (fr)
DE (1) DE4321824A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410459B (de) * 1996-09-09 2003-05-26 Doka Ind Gmbh Bühnenbelag für konsolbühnen oder überbrückungsbühnen sowie verfahren zur montage einer konsolbühne
FR2932512A1 (fr) * 2008-06-17 2009-12-18 Paul Marie Bernard Entretoise articulee pour plateforme support de banche
US20120210668A1 (en) * 2009-09-15 2012-08-23 Arne Kryger Tubular building structure with hingedly connected platform segment
CN103452301A (zh) * 2013-08-01 2013-12-18 浙江长兴前进机械铸造有限公司 一种可旋转角度作业平台
FR3004480A1 (fr) * 2013-04-12 2014-10-17 Sateco Sa Structure pliable de travail en encorbellement integrant un dispositif d'aide au depliage d'un auvent
US10100525B2 (en) * 2014-12-15 2018-10-16 Acciona Windpower, S.A. Wind turbine with a concrete tower and method for the assembly thereof
CN111962854A (zh) * 2020-08-12 2020-11-20 鹏程建设集团有限公司 一种具有安全防护机构脚手架及搭建方法
CN112392246A (zh) * 2020-12-31 2021-02-23 武汉武船重型装备工程有限责任公司 一种升船机间隙密封止水橡胶皮维护用翻转折叠工作平台

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104929353A (zh) * 2015-06-01 2015-09-23 江苏省苏中建设集团股份有限公司沈阳分公司 可拆卸楼梯式电梯井自动爬升操作平台

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8909026U1 (fr) * 1989-07-25 1989-09-14 Oesterreichische Doka Schalungs- Und Geruestungstechnik Ges.M.B.H., Amstetten, At
EP0468907A1 (fr) * 1990-07-27 1992-01-29 Eurobress Passerelle-support repliable pour banches de coffrage
FR2676771A1 (fr) * 1991-05-21 1992-11-27 Al Cant Coffrages Perfectionnement aux consoles pignons repliables pour echafaudages ou analogues.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114531C2 (de) * 1991-05-03 1994-11-24 Peri Gmbh Arbeitsbühne für Wände oder Schalungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8909026U1 (fr) * 1989-07-25 1989-09-14 Oesterreichische Doka Schalungs- Und Geruestungstechnik Ges.M.B.H., Amstetten, At
EP0468907A1 (fr) * 1990-07-27 1992-01-29 Eurobress Passerelle-support repliable pour banches de coffrage
FR2676771A1 (fr) * 1991-05-21 1992-11-27 Al Cant Coffrages Perfectionnement aux consoles pignons repliables pour echafaudages ou analogues.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410459B (de) * 1996-09-09 2003-05-26 Doka Ind Gmbh Bühnenbelag für konsolbühnen oder überbrückungsbühnen sowie verfahren zur montage einer konsolbühne
FR2932512A1 (fr) * 2008-06-17 2009-12-18 Paul Marie Bernard Entretoise articulee pour plateforme support de banche
US20120210668A1 (en) * 2009-09-15 2012-08-23 Arne Kryger Tubular building structure with hingedly connected platform segment
US8615965B2 (en) * 2009-09-15 2013-12-31 Andresen Towers A/S Tubular building structure with hingedly connected platform segment
FR3004480A1 (fr) * 2013-04-12 2014-10-17 Sateco Sa Structure pliable de travail en encorbellement integrant un dispositif d'aide au depliage d'un auvent
CN103452301A (zh) * 2013-08-01 2013-12-18 浙江长兴前进机械铸造有限公司 一种可旋转角度作业平台
CN103452301B (zh) * 2013-08-01 2015-06-24 浙江长兴前进机械铸造有限公司 一种可旋转角度作业平台
US10100525B2 (en) * 2014-12-15 2018-10-16 Acciona Windpower, S.A. Wind turbine with a concrete tower and method for the assembly thereof
CN111962854A (zh) * 2020-08-12 2020-11-20 鹏程建设集团有限公司 一种具有安全防护机构脚手架及搭建方法
CN112392246A (zh) * 2020-12-31 2021-02-23 武汉武船重型装备工程有限责任公司 一种升船机间隙密封止水橡胶皮维护用翻转折叠工作平台
CN112392246B (zh) * 2020-12-31 2022-03-01 武汉武船重型装备工程有限责任公司 一种升船机间隙密封止水橡胶皮维护用翻转折叠工作平台

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