EP0732466A1 - Tréteau ajustable en hauteur hydrauliquement - Google Patents

Tréteau ajustable en hauteur hydrauliquement Download PDF

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Publication number
EP0732466A1
EP0732466A1 EP96103009A EP96103009A EP0732466A1 EP 0732466 A1 EP0732466 A1 EP 0732466A1 EP 96103009 A EP96103009 A EP 96103009A EP 96103009 A EP96103009 A EP 96103009A EP 0732466 A1 EP0732466 A1 EP 0732466A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
load
scaffolding
frame
height
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.)
Granted
Application number
EP96103009A
Other languages
German (de)
English (en)
Other versions
EP0732466B1 (fr
Inventor
Martin Lindmeier
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from DE19511837A external-priority patent/DE19511837C1/de
Application filed by Individual filed Critical Individual
Publication of EP0732466A1 publication Critical patent/EP0732466A1/fr
Application granted granted Critical
Publication of EP0732466B1 publication Critical patent/EP0732466B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/22—Scaffolds having a platform on an extensible substructure, e.g. of telescopic type or with lazy-tongs mechanism

Definitions

  • the invention relates to a trestle with hydraulic height adjustment according to the preamble of claim 1.
  • Height-adjustable work scaffolds for example in the form of a flat scaffold with crank adjustment of a load platform, are known.
  • a height-adjustable element is arranged in the manner of a telescopic guide in a trestle frame.
  • the height-adjustable element is driven by a crank that interacts with an axis.
  • the height-adjustable element has spaced-apart recesses into which a gearwheel engages on the axis of the drive element.
  • a drive mechanism is required for each element and the height adjustment can only be carried out manually without a load support, so that, for example when using such a crank platform to build a wall, the working process must be interrupted several times.
  • a height-adjustable trestle with a lower tubular frame and an extendable upper part is known, the height adjustment itself being carried out by a hydraulic cylinder / piston.
  • the required hydraulic cylinder is integrated in the frame construction and is driven by an external unit, so that height adjustment under load is also possible.
  • a wheel is arranged on the frame construction, so that the respective trestle can easily be transported manually to another location.
  • a folding railing rail is attached to the scaffold frame and a height-adjustable work platform is provided.
  • An essential basic idea of the invention is to use the scaffold stand with hydraulic height adjustment in such a way that a large number, but at least two scaffold stands are arranged at a distance, so that a virtually arbitrary load and work surface is created with the same working height.
  • the working height can be adjusted continuously and evenly even under load and remotely, in that the respective hydraulic cylinders of the large number of scaffolding trestles are controlled by means of a hydraulic unit which has a gear quantity divider for uniform pressure or hydraulic fluid loading.
  • the hydraulic cylinders each have a load holding valve, so that the current working height selected is retained even after the hydraulic unit has been switched off or removed.
  • the known transport wheel is designed as a double wheel, which is arranged on a common axis, in order to avoid lateral tilting when the scaffold stand changes position.
  • the load platform carrier has means for receiving a foldable safety railing, the safety railing being fixed to the frame spar in transport or folded state and parts of the same at the same time forming a transport handle for easier change of position of the scaffolding trestle by means of the double wheel.
  • the foldable safety railing has a locking bracket which, in the event that the railing is in its actual functional position, additionally secures the covering frame and / or the covering located there against vertical tilting.
  • the respective hydraulic cylinder of the respective trestle is arranged almost centrally on a lower frame cross member and guided on the upper frame cross member, so that a telescopic extension and retraction of the load platform carrier, which is movably guided in the frame bars, can be carried out by means of a single hydraulic cylinder .
  • the hydraulic piston is hinged on the load platform support, so that tilting of the telescopic guides, in particular when retracting the load platform support, is almost impossible.
  • the hydraulic connection elements are arranged on the cylinder base essentially in the width region of the lower frame cross member, protected by this against mechanical damage.
  • Required hydraulic tubes are provided close to the outer circumferential surface of the hydraulic cylinder, so that damage, in particular mechanical, is reduced.
  • the retracted, i.e. The lowered state of the scaffold frame ensures a safety distance between the load platform girder and the upper frame cross girder.
  • this safety distance is essentially 20 cm.
  • the scaffolding trestle according to the invention enables locking at any height by the special hydraulic cylinder with a load holding valve arranged in the lower region, even in the case when a hydraulic unit is not connected. It is therefore guaranteed that the height is locked in any position under any circumstances.
  • the transport wheel according to the invention which is designed as a double wheel, prevents the trestle from tipping away when it is lifted and pushed away during one-man operation.
  • the safety railing which can be fixed, for example, with a fastening bolt folded down, enables the use of parts of the safety railing, namely the means for hanging railing cross struts as a handle.
  • This handle is used to easily move the single trestle using the aforementioned double wheels.
  • fastening devices are provided on the longitudinal strut facing away from the wheel Arrangement of optionally length-adjustable cross struts, which connect the trestles to one another and secure against slipping, is provided.
  • the length adjustability gives the possibility to change the stand spacing, which increases the load capacity and covering frames of different dimensions can be used.
  • the load platform carrier has essentially opposite bores which serve to lock adapter supports for a wide variety of covering frames.
  • the adapter supports have e.g. a triangular or semicircular shape, so that decking frames or stacking frames from a wide range of scaffold manufacturers can be securely locked against slipping away without any structural changes having to be made in the actual hydraulic jack.
  • the upper receptacle of the hydraulic piston on the upper frame support is designed such that a U-shaped gripping of the upper frame support is realized. This increases the stability against lateral tilting when forces are applied at an angle from above.
  • the profiles of the telescoping stiles are essentially square or have a rectangular cross section.
  • a particular advantage of setting up a plurality of scaffolding trestles according to the invention is the formation of a large work surface which can be configured to form a corner, in a different manner at an angle with intermediate pieces, or to form a large coherent surface.
  • the scaffolding trestle according to the invention is also suitable for lifting beams or the like to the ceiling area, without the need to use cranes or other lifting devices.
  • Such other lifting devices can e.g. in any case, they are not to be used without restrictions in the renovation of old buildings, since known cranes or hydraulic work platforms cannot be transported and built into the space already converted.
  • Existing locking brackets for receiving the work platform or a running surface, which rests on the work platform are designed so that a projection or nose, as with the safety railing, secures the covering frame or boards located thereon.
  • the bracket for the work platform itself can be adjusted in height by means of hole catches or hydraulically.
  • control of a plurality of hydraulic cylinders according to the invention takes place uniformly, but the cylinders can also be controlled individually, so that height compensation, e.g. with different surfaces, can be made.
  • the unit used is easy to move and can be used to control several groups of hydraulic jacks or the hydraulic cylinders of such jacks.
  • the unit can be operated remotely, so that the construction worker who is working on the hydraulic jack can remotely change the height of the jack or the jacks.
  • the hydraulic jack only moves up to a predetermined latching height, so that there is no danger to persons below it.
  • the hydraulic jacks themselves are space-saving, essentially portable and can be opened and closed with one-person operation be dismantled. Thanks to the easy transport, lifts that cannot be used in certain locations can also be replaced. This can be useful, for example, if joist formwork is to be installed or beams have to be installed subsequently.
  • the hydraulic unit provided with a gear divider can be designed so that it can be switched by means of e.g. Ball valves are capable of several stages, e.g. to operate on large construction sites.
  • a frame 1 which has frame bars 6 on the side.
  • the frame bars 6 are connected in the lower area by means of a lower frame cross member 3 and in the upper area by means of an upper frame cross member 4.
  • the frame bars 6 are preferably made of a rectangular or square hollow profile.
  • support feet 2 are arranged on the frame bars 6 and on the lower frame cross member.
  • a support foot 2.1 standing sideways in width serves to accommodate a double wheel 8 arranged on a common axis in order to facilitate the transport of the trestle.
  • a load platform support 5 has telescopically cooperating bars with the frame bars 6, the profile of which in shape and dimension is adapted to the inner profile of the frame bars 6 with play.
  • the load platform support 5 is guided and arranged so as to be movable and height-adjustable in the frame bars 6 through these bars.
  • a hydraulic cylinder 7 is supported on the lower frame cross member.
  • the hydraulic cylinder 7 is laterally fixed to the upper frame cross member 4 by means of a clamp 15.
  • the hydraulic cylinder 7 itself receives a hydraulic piston 70.
  • the hydraulic piston 70 is movably arranged on the load platform support 5 by means of a joint, close to the center of the width thereof.
  • Hydraulic fluid penetrating into the hydraulic cylinder 7 displaces the hydraulic piston 70, the latter adjusting the height of the load platform support 5.
  • a load holding valve arranged in the interior of the hydraulic cylinder 7 ensures that a predetermined height is maintained even in the event of an external pressure that is no longer present or a pressure loss.
  • the load holding valve is expediently located in the cylinder base 10 of the hydraulic cylinder 7.
  • means 9.3 are laterally provided on the load platform support 5 for fastening a work platform 9.
  • These fasteners 9.3 are designed so that the support bracket 9.1 for the working platform 9 is removed and rotated 180 ° with the projection 9.2 of the respective support bracket 9.1 and can be inserted and fastened from above such that the projection 9.2 is locked above the load platform support 5, whereby the transport space of the trestle is reduced (position shown in broken lines according to FIG. 1a).
  • a safety distance A is preset between the upper frame cross member 4 and the load platform support 5 by appropriate design dimensioning, so that the required occupational safety aspects are taken into account to a sufficient extent.
  • a safety railing 11 is arranged on the side of the load platform support 5 so as to be pivotable or foldable.
  • the railing rail to form the safety railing 11 can be folded down and locked in transport, whereby parts of the railing bracket 12 can be used as a handle for lifting and pushing the scaffold frame by means of the double wheel 8. This results in the position of the trestle being easy to change, even when one-man operation is desired.
  • a locking bracket 14 is arranged on the railing rail, which in the railing state secures a covering frame and / or a covering applied thereon against tilting.
  • adapter supports 13 which can be plugged on and exchangeably arranged on the load platform support 5, very different covering frames can be laterally fixed. Depending on their shape, the adapter supports 13 form a support surface that is optimized for the respective covering frame.
  • Hydraulic connection elements 15 are on the cylinder base 10 of the hydraulic cylinder 7 essentially the width of the lower one Frame cross member 3 arranged accordingly, so that the greatest possible protection against mechanical damage to these connecting elements 15 is guaranteed.
  • Required hydraulic tubes 16 are provided close to the outer circumferential surface of the hydraulic cylinder 7, so that the risk of damage is also reduced here.
  • Lockable, cross-shaped, length-adjustable cross struts secure these mutually against multiple shifting platforms against lateral displacement or pushing away under load.
  • six hydraulic jacks are connected in a row next to one another on a common unit with a gear metering device for uniform pressure application. This creates a continuous, flat and extensive cargo platform and work surface, so that a correspondingly long masonry can be built quickly train by train. Due to the possibility of remote control of the height adjustment of the hydraulic jacks, the construction workers do not have to leave the work area, and the effectiveness of the work process can be increased.
  • Remote controllability is achieved by electrical actuation of solenoid valves of the hydraulic unit.
  • a large, possibly angled surface can be formed, which can be raised or lowered uniformly in height with the specified hydraulics.
  • the hydraulic jacks are also suitable for lifting girders or the like to the ceiling area, without the need to use other cranes or lifting devices. This leads to special advantages, for example in the renovation of old buildings and reconstruction in buildings with limited space due to space that has already been converted.
  • the individual scaffolding trestles can be transported easily and in a space-saving manner when they are closed and the railings folded down, or can be stored in a small space.
  • the achievable load capacity per trestle is approximately 1500 kg, with scaffold group 5 being reached at a trestle spacing of 2.5 m.
  • an electronically controlled, predetermined, equal quantity of hydraulic fluid can also be introduced into the respective hydraulic cylinder in order to achieve the desired uniform height adjustment of the respective load platform carrier.
  • FIG. 1b shows a section through the scaffold frame along the line A - A according to FIG. 1a; The same parts are provided with the same reference numerals in each case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Movable Scaffolding (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP96103009A 1995-03-13 1996-02-28 Echafaudage Expired - Lifetime EP0732466B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19509015 1995-03-13
DE19509015 1995-03-13
DE19511837A DE19511837C1 (de) 1995-03-13 1995-03-30 Gerüstbock mit hydraulischer Höhenverstellung
DE19511837 1995-03-30

Publications (2)

Publication Number Publication Date
EP0732466A1 true EP0732466A1 (fr) 1996-09-18
EP0732466B1 EP0732466B1 (fr) 2002-05-08

Family

ID=26013323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103009A Expired - Lifetime EP0732466B1 (fr) 1995-03-13 1996-02-28 Echafaudage

Country Status (3)

Country Link
EP (1) EP0732466B1 (fr)
AT (1) ATE217378T1 (fr)
CZ (1) CZ289665B6 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883114A (zh) * 2012-12-20 2014-06-25 江苏瑞安特重型机械有限公司 一种高空作业安全操作平台
CN104895313A (zh) * 2015-05-21 2015-09-09 中州大学 一种用于建筑施工的平台传动装置
GB2539663B (en) * 2015-06-22 2018-10-03 Safestand Ltd Builders' trestles
CN111810094A (zh) * 2020-08-11 2020-10-23 大庆丹诺石油科技开发有限公司 无游梁式抽油机卸载装置和使用方法
CN114809557A (zh) * 2022-03-24 2022-07-29 安徽理工大学 一种应用于装配式建筑施工支架

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111501567A (zh) * 2020-04-24 2020-08-07 严学芝 一种应用于桥梁施工的脚手架

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091305A (en) * 1961-04-28 1963-05-28 Fordees Corp Hydraulically operated portable scaffold
US3221838A (en) * 1962-11-08 1965-12-07 Alton M Brayton Deck and lift structure for scaffolding and the like
US3891055A (en) * 1973-12-18 1975-06-24 Alfred A Medlock Self-elevating scaffold construction
DE3509833C1 (de) * 1985-03-19 1986-11-27 MAFISCO Bautechnik GmbH, 7959 Achstetten Hebebühne
EP0206382A2 (fr) * 1985-06-24 1986-12-30 CORGHI ELETTROMECCANICA S.p.A. Système hydraulique pour commander des ponts de voiture en général
DE9401407U1 (de) * 1994-01-28 1994-08-04 Lindmeier, Martin, 94127 Neuburg Hydraulik-Gerüstbock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091305A (en) * 1961-04-28 1963-05-28 Fordees Corp Hydraulically operated portable scaffold
US3221838A (en) * 1962-11-08 1965-12-07 Alton M Brayton Deck and lift structure for scaffolding and the like
US3891055A (en) * 1973-12-18 1975-06-24 Alfred A Medlock Self-elevating scaffold construction
DE3509833C1 (de) * 1985-03-19 1986-11-27 MAFISCO Bautechnik GmbH, 7959 Achstetten Hebebühne
EP0206382A2 (fr) * 1985-06-24 1986-12-30 CORGHI ELETTROMECCANICA S.p.A. Système hydraulique pour commander des ponts de voiture en général
DE9401407U1 (de) * 1994-01-28 1994-08-04 Lindmeier, Martin, 94127 Neuburg Hydraulik-Gerüstbock

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883114A (zh) * 2012-12-20 2014-06-25 江苏瑞安特重型机械有限公司 一种高空作业安全操作平台
CN104895313A (zh) * 2015-05-21 2015-09-09 中州大学 一种用于建筑施工的平台传动装置
CN104895313B (zh) * 2015-05-21 2019-08-16 中州大学 一种用于建筑施工的平台传动装置
GB2539663B (en) * 2015-06-22 2018-10-03 Safestand Ltd Builders' trestles
CN111810094A (zh) * 2020-08-11 2020-10-23 大庆丹诺石油科技开发有限公司 无游梁式抽油机卸载装置和使用方法
CN111810094B (zh) * 2020-08-11 2024-05-24 大庆丹诺石油科技开发有限公司 无游梁式抽油机卸载装置和使用方法
CN114809557A (zh) * 2022-03-24 2022-07-29 安徽理工大学 一种应用于装配式建筑施工支架
CN114809557B (zh) * 2022-03-24 2024-02-23 安徽理工大学 一种应用于装配式建筑施工支架

Also Published As

Publication number Publication date
CZ289665B6 (cs) 2002-03-13
EP0732466B1 (fr) 2002-05-08
ATE217378T1 (de) 2002-05-15
CZ74296A3 (en) 1996-10-16

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