DE2050516A1 - Vertically adjustable platform for scaffolding - Google Patents

Description

concerning
Vertically adjustable platform for scaffolding

The present invention relates to a vertical Working platform and in particular a working platform that is attached to a support structure, such as a frame section existing scaffolding of conventional design, for free, unimpeded vertical movement along the same quickly and can be easily attached.

Scaffolding of the type to which the present invention particularly relates are used in the building industry for support very common by workers and materials along a work area. The scaffolding is usually used as an aid to Construction of wall walls or the like. Used, whereby the stacking of stones, blocks or bricks the height of the wall increased progressively. To this end

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the framework generally has a number substantially identical frame sections, which are attached parallel to each other perpendicularly along the work area can to form a first level of work. Additional frames can be attached above the first level, " whereby the height of the scaffolding increases as construction progresses and the workers and materials always approximately adjusted height are supported. Each section has a pair of interconnected parallel and spaced apart Posts, usually four to seven feet high, with the various sections are connected by diagonal connecting struts to form a continuous construction.

It is the object of the invention to create a sectional scaffolding of the above type that has a platform structure tion which is connected to it in such a way that it runs along the entire height of the scaffolding without obstruction through the connecting struts and without the need to remove these struts or posts can be raised or lowered progressively over the entire height of the scaffolding.

Known during scaffolding of this general type of construction are, the known constructions require that the diagonal struts between the vertical sections

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the front of the scaffolding can either be permanently or temporarily removed and reinserted while moving moves the platform along the scaffolding sections. In the latter case, moving the platform provides one Tent-robbing work step, because the cross bracing the scaffolding must be separated and then reconnected. In the former case, the framework is significantly weakened and thus the safety of construction workers at risk.

Such previously known constructions also usually require that the full height of the scaffolding be erected must be attached before construction work has started and the vertically adjustable platform attached to the scaffolding has been. This is very undesirable as it requires larger scaffolding and the skilled construction workers during the time in which the unskilled workers do the Erect scaffolding, do nothing.

Accordingly, an object of the invention is to provide a scaffolding divided into vertical sections with a Platform construction that can be freely moved vertically relative to the scaffolding sections and the elimination any of the struts of the scaffolding are not required. In this regard, the goal is to be one perpendicular adjustable platform construction to create the

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to a scaffolding with diagonal braces both on the Vorderais can also be attached to the back.

Another object of the invention is to provide a scaffolding platform that is attached to one of sections existing scaffolding easily and quickly attached and raised or lowered along the entire height of the scaffolding can be. An object of the invention is also to provide a cable suspension for the platform that periodically separated in a higher position and then again can be connected so that the platform can be raised to the height of newly attached scaffolding.

These and other objects and advantages of the invention are carried out in the embodiment illustrated herein the arrangement of a vertically adjustable platform construction achieved with a vertical running rail and has a slidably attached platform support, which can be moved vertically along the running rail. A cable is between the beam and the running rail arranged to support the carrier and releasably connected to it and a cable or winch is for lifting or Lowering of the carrier provided. To ensure that the carrier does not fall in the event the rope breaks, is preferred A detachable safety catch device is provided, which is directly connected to a section of the running rail

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come into engagement and thus prevent a downward movement of the carrier along the running rail. A couple the running rails can be connected to one side of two frame sections of a scaffolding, the both beams supported outside of any connecting struts and to support an extending between them for free unobstructed vertical movement Serve platform.

Having mentioned some of the objects of the invention, other objects will become apparent in the course of the description in conjunction with the accompanying drawings; show in it:

Fig. 1 is a perspective view of the platform according to the present invention together with a support frame;

Pig. Figure 2 is an elevation and partial side view illustrating the manner in which the track attached to the vertical section of the scaffolding;

Fig. 3 is an elevation or a partial side view for Illustration of the manner in which the running rail is attached to the vertical section, wherein it also shows the releasable brake;

Flg. 4 is an overhead view of that shown in FIG Opinion;

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pig. Figure 5 is an isometric view of the track and platform support of the invention;

6 is a broken away perspective view of the Cable holder and hook according to the invention;

7 is a partial side view of the slidable connection between the platform beam and the support track;

Fig. 8 is an overhead view of the in Fig. 7 shown ^ presented construction;

9 is a front view of the platform according to the invention and

Flg. 10 is a perspective view partially showing broken away 1st and shows the platform and the protective screen.

Referring to the drawings in detail, they show part of a scaffolding, which is generally used in fc 20 (Fig. 1) "is indicated, as well as an adjustable work platform, indicated generally at 21, in which incorporates the features of the invention. In the embodiment shown, the scaffolding 20 has a Number of substantially identical frame-like sections 22, each of which has two vertical posts 23, which are connected to one another at the upper end by a horizontal connecting member 24. The framework sections 22 can be made of any conventional material, such as

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Steel pipes, manufactured and welded to the desired shape or manufactured in some other way. Diagonal connecting struts 25 extend between the sections 22 of each height of the frame 20 and are with him by suitable Connecting parts connected such as a conventional bolt (not shown). The frame sections 22 are designed so that they can be stacked to increase the height of the scaffolding 20 in the previous construction, wherein the standing upright posts 23 are telescopically connected to continuous vertical Form supports along the height of the scaffolding. The horizontal connecting links 24 of the framework sections 22 can expediently be used as supports for material platforms, only one of which is shown at 26.

The vertically adjustable platform 21 is supported from one side of the frame sections 22 next to the work area. The platform 21 has means which define or form a pair of vertically extending running rails 27 which are detachably attached to one side of a pair of frame sections 22. As can be seen from FIGS. 2-4, each running rail 27 is formed by a number of vertical running rail sections 28, the length of which corresponds essentially to the height of the frame sections, with a device for releasably connecting the running rails to the frame sections outside the connecting struts

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25 is provided consisting of a pair at a distance from one another arranged U-shaped connecting parts 29 consists, which are attached to each Laufschienenäbsöhnltt 28 and three sides of the vertical post 23 of the frame, ■ surrounded by rüstabsohnittes. A pair of bolts 30 extends

through each connecting part 29 and behind the vertical. Post 23 with one of the bolts above a - horizontally extending link and the other below "the horizontal link. With this arrangement,

each running rail along a vertical post 23 '■ can be fastened quickly and securely.

Everyone. Running rail section 28 preferably has a double T-beam with flanges 32, 33 and one Web 34 on the opposite U-shaped Form channels; see Figure 4. The outwardly facing surface of flange 32 has a number perpendicular ^ ■ spaced transverse stops 36 on, in the illustrated embodiment one of the teeth, have a shape similar to a rack. Normally, the height of the rail saw center 28 is slightly less than the height of the associated vertical posts so that the downward forces exercised on the running rail Posts are transferred, but one in we @ intl-ieh§n continuous track construction along the ■■ walking vertical posts of the scaffolding formed when the sections are placed on top of each other. Ii l§yöntit

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Jedocti one that is a single

also along the posts of two or more superimposed Sections can extend upwards.

A carrier 40 for supporting the platform 21 is included each running rail 27 outside the connecting struts 25 for free unimpeded vertical displacement along the Rails slidably connected. Each carrier 4o has a vertical support member 42, a horizontal support member 44 and an inclined support member 46. These links can be made from any material such as steel tubing and are rigidly connected to one another, e.g. by welding to form the triangle shown. The outer end of the horizontal member 44 preferably has a vertically directed tube 47 which the leg of a (not shown) conventional safety protection rail and hold.

The carrier 4o is slidably connected to the track by means of a pair of wheel supports 48 which are spaced along the vertical support 42 (Fig. 5). As best from the figures 7 and 8, each wheel holder 48 has a pair of parallel side plates 50 and 51 that are aligned with the perpendicular Brackets 42 are connected by bolts 52, with spacers 54 between the side plates and the uprights 0 9 8 1 7 / U 7 5

right support, 42 are arranged. The free ends of the Side plates. 50, 51 carry wheels 55 and 56 that go through the support bolts 55 'and 56' formed horizontal axes are rotatable.

In the illustrated embodiment, the two are Wheels axially aligned with each other to match the flanges 32, 33 to come into engagement. A horizontally extending one Member 58 is attached to each side plate 50, 51 immediately above each wheel and partially enters the associated running track channel and thereby prevents parts of building blocks or the like from reaching the wheel and, damage, whereby there are also any accumulated fragments of stones or the like from the canals during the upward movement the platform eliminated. The members 58 also permit very limited infrequent movement of the wearer 4o in case the assigned wheel breaks. · '";

According to the invention, each running rail section 28 preferably has an abutment 60 which is rigidly attached to it at its upper end (FIG. 6). In the embodiment shown, the abutment 60 has an upwardly inclined front wall 61 and a connecting central web 62. A hook 64 attached to one end of a cable 66 can engage the abutment 60. That

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f »| pi nt in

The front end of the hook 64 is U-shaped and has a fork at 65 which forms the central web 62 of the abutment and thus prevent sideways movement between them.

The lower end of the cable 66 is connected to a cable winch 68 connected, which in turn is connected to the upper end of the vertical support member 42 is connected. The winch 68 is of conventional construction and constructional details do not belong to the invention. As shown, the winch includes a cable drum 70, a crank 71 and a ratchet 72 so that the drum can be turned in any direction using the crank »

To prevent downward movement of the carrier 40 during the time in which the cable 66 is not connected to the running rail connected or to prevent winch failure or breakage of the cable, a brake pawl 74 is provided, which is rotatably mounted next to the lower end of the vertical support member 42. The pawl is through with the support 42 a pin 75 rotatably connected and has a forearm 76, which with one of the transverse stops 36-when it rotates in the in Pig. 3 'position shown come into engagement and can be locked behind the stops. In particular, the pawl 74 has a forearm 76 that extends in the direction of is directed obliquely downward on the stops 36, as well as

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a long rear arm 77 which is directed horizontally away from the stops. The rear arm is longer and heavier than the forearm and the forearm is therefore normally pushed upward and engaged with the stops 36. During the upward movement of the carrier 40, the forearm 76 will only jump over the stops 36, whereas during the downward movement it comes into engagement with one of the stops and is locked behind it and thus prevents any further movement.

To release the pawl 74, a chain 78 is provided, which is connected at one end to the rear arm 77 of the brake. When the chain is lifted, the pawl 74 rotated and brought out of engagement with the stops 36, so that the carrier 4o becomes free for the downward shift.

As can be seen from FIGS. 5 and 10, the vertical carries Support 42 is a pair of tubular supports 80 and 81. These supports carry support members 82 of a removable one Protective screen 83. The upper support 80 has a slot 84 which serves as a convenient attachment means for the upper end of the chain 78 is used.

The screen 83 lies over the platform 21 and preferably over the work area for protection for the workers

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and materials on the platform 21 and the work area against direct sunlight and rain. The platform can be used during the time in which the workers do not work, be lowered until the canopy is immediately above the wall or other work area is to protect the same, eliminating the need to cover the top of the wall or another Working area with plastic covers or other foil material is not applicable according to the current practice.

The platform 21 also includes a supporting platform member 85 which is carried by the pair of supports 40 and which is extends between these supports. The platform member 85 has a pair of support feet 86 and an overlying one Floor 87 on. The ends of the two support feet 86 are connected to the horizontal support members 44 by means of floor supports 89. These carriers essentially have one identical construction and each have a rectangular tube part 90 for receiving at one end one end of the associated support leg, while the other end has a U-shaped hook part 91. As shown in Fig. As can be seen, the distal end of the hook portion 91 has an inwardly extending lip 92. At this Construction, it can be seen that the hook part substantially surrounds the horizontal support member 44, whereby it is

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same can be solved by lifting it directly upwards. The lip 92 of the hook part serves as an additional safety device, since it tends to prevent downward movement of one of the carriers 4o. In particular, the Fall of the pawl 74 and the cable 66 onto one of the carriers 40 after a short fall, the horizontal support 44 of this carrier can be gripped by the lip 92 of the hook part 91.

ψ To assemble the adjustable platform according to the invention and to actuate the two guide rail sections 28 are mounted on posts 2 ^ two points present at a distance scaffolding frame by means of the connecting members 29 and the bolts J50. The two platform supports 4θ are first connected to running rails assigned to them by being slipped over one end of the running rails either before or after the running rails are attached to the frame sections. The cable 66 on each bracket 40 is then attached to the

k - abutment 6O attached to the upper end of the Laufschienenabnhnitte. Once the support feet 86 and the floor beams 89 have been attached to the horizontal supports 44 and the floor 87 is in position, the platform 21 is ready for use.

In order to lift each carrier 4o along the associated running rail, only the crank 7I of the winch has to be be operated. Once the girder is lifted, skips

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the pawl ¹ Jk each stop J56 and the abutment 6o in between. As soon as the correct height is reached, the pawl 74 comes automatically into engagement with the closest stop 56 and is locked behind it, whereby an additional protection against falling is guaranteed.

To lower the platform, the ratchet lock of the winch is operated in reverse, so that by operating the crank 71, the drum 70 is rotated in the opposite direction. The pawl 74 is released by lifting the chain 78, which in turn rotates the pawl 74 away from the stops J6. The girder can then be lowered under control of the winch.

If the cable is attached to the abutment 60 of a certain running rail section 28 and it is desired, To raise the platform above this height, only the pawl 74 has to be gripped. The cable is relaxed by the Winch is operated in the downward device, and then the cable hook 64 in the next higher abutment βθ are raised. The upward movement can then continue by propelling the winch forward. In this way the platform can take the scaffolding to new heights and in newly added track sections 28

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be raised periodically. So the scaffolding does not have to be extend at its final height when 'the platform first attached and work commenced.

While the invention is explained in great detail here it is evident that various modifications are possible without departing from the inventive concept. So can for example, the adjustable platform to a scaffolding of various other conventional types or to others Structures can be attached, such as a steel post or a masonry wall. The rails can also use the post of the scaffolding can be formed in one piece, so as to reduce the overall weight of the device and to facilitate assembly. -

All information and characteristics disclosed in the documents, in particular the spatial configuration disclosed in the drawings, insofar as they are individually or in combination are new compared to the prior art, claimed as essential to the invention.

Expectations

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Claims (11)

Expectations l.j Scaffolding platform for use with a scaffolding made up of sections to support workers and materials adjacent to a work area, the scaffolding being a number substantially identical Has frame sections and connecting struts extending between them, characterized by a support device (27) which can be fastened to one side of the frame sections (22) in the vicinity of the work area is and has at least two vertically extending running rails, which of the Verblndungsstreben (25) are spaced outwards, a platform device for supporting workers and materials, the at least two platform supports (4o) and a support platform (85) extending between and supported by the beams (40) includes retaining means (48) for holding the girders (40) on the running rails (27), the girders and the platform outside the connecting struts for free, unhindered vertical movement of the platform means are arranged relative to the frame sections without the need to remove the struts and by means (64, 66 and 68) for moving the platform means vertically along of the rails. 1 0 9 8 1 7 / U 7 5 2. Scaffolding platform according to claim 1, characterized by a releasable braking device which a number of vertically spaced stops (^ 6) that are rigidly attached along each running rail, and a brake rod (74) which is rotatably mounted on each of the platform supports and behind one the stops can be engaged to cause downward movement of the carriers (4θ) along the slide rails to prevent. 3. scaffolding platform according to claim 2, characterized in ge η e t that the brake rod (74) has a forearm (76) which is diagonal in the direction of the stops is directed downwards, and has a rear arm (77) which is directed away from the stops, the The forearm is biased upward and engages the stops. ■ 4. Scaffolding platform according to one of claims 1 to characterized in that the means for moving the platform means is a pair of cable winches (68), which are connected to the platform, rn and each having a cable (66) and a cable hook (64) attached to its upper end, on each barrel rail a clamp (6O) is rigidly attached to which the hook is releasably held. 109817/1475 lIl P ρ «Ι. ■■ 'KIi,., ■, ■■■: .. ■ ..: -: ,,:" ,, ■, "■ ■ _; , ......., .. ,,. ...... ¹ ■ ■ , ■■■■, ^iVi ; '■'; ■ ν τ ψ ■ ι f: l ,; _#;: V γ \ - 19 - 5. Building scaffolding platform according to one of claims 1 to 4, characterized by fastening means (29, 30) for releasably connecting the running rails (27) with one side of the scaffolding sections » 6. Scaffolding platform according to claim 5 *, characterized in that the fastening means for " the running rails at least a pair of U-shaped beams (29), the three sides of an upright post of the frame sections surround, as well as bolts (JO), which in the Brackets are attachable so that they extend along the fourth side of this upright post. 7. Building scaffolding platform according to one of claims 1 to 6, characterized in that each platform carrier an outwardly extending horizontal support member (44); and that the support platform has end link brackets (89-92) covering and substantially surrounding each support member. 8. Scaffolding platform according to one of claims 1 to 7, characterized in that each running rail (27) has a number fh perpendicular to one another having aligned running rail sections (28), the Height corresponds approximately to the height of a scaffold section. 109817/147 * 2050518 9. Scaffolding platform according to one of claims 1 to 8, characterized in that each running rail (27) has a double T-beam spaced from the located flanges and a connecting web to form opposing U-shaped channels. seated, wherein the holding means (48) for holding the carrier _{fc has} a pair of wheels (55 * 56) on the running rails, one of which is arranged in each channel and is in contact with at least one of the flanges. A scaffolding platform as claimed in claim 9, characterized by a horizontally extending member (58) disposed on said support immediately above each wheel (55,56), said members partially entering the associated channel and preventing debris from coming up prevent the bike from falling and the wearer from moving sideways if it does; the wheels break. 11. Scaffolding platform according to one of claims 1 to 10, characterized by .a protective screen (83) To protect the workers and the materials against rain and the like., The one above the work surface of the platform unit and extends outwardly beyond the platform device and is above the work area, and by means (80-82) for removably attaching the Canopies (83) on the platform supports to the vertical Be = - move with you. 1 Q θ 8 1 7/1 4 7 6