WO2024038082A1 - Système d'abaissement, dispositif de support et coffrage de plafond, ainsi que procédé d'abaissement et d'élévation d'un support de construction - Google Patents

Système d'abaissement, dispositif de support et coffrage de plafond, ainsi que procédé d'abaissement et d'élévation d'un support de construction Download PDF

Info

Publication number
WO2024038082A1
WO2024038082A1 PCT/EP2023/072548 EP2023072548W WO2024038082A1 WO 2024038082 A1 WO2024038082 A1 WO 2024038082A1 EP 2023072548 W EP2023072548 W EP 2023072548W WO 2024038082 A1 WO2024038082 A1 WO 2024038082A1
Authority
WO
WIPO (PCT)
Prior art keywords
articulated arms
articulated
support housing
lowering
support
Prior art date
Application number
PCT/EP2023/072548
Other languages
German (de)
English (en)
Inventor
Florian Sturm
Lukas STENKE
Original Assignee
Peri Se
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 Se filed Critical Peri Se
Publication of WO2024038082A1 publication Critical patent/WO2024038082A1/fr

Links

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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/486—Dropheads supporting the concrete after removal of the shuttering; Connecting means on beams specially adapted for dropheads
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G2025/006—Heads therefor, e.g. pivotable

Definitions

  • the present invention relates to a lowering device for the construction sector, in particular for lowering ceiling formwork when stripping a building ceiling.
  • the lowering device has a reciprocating piston and a support base, wherein the reciprocating piston is slidably mounted in the support base and can be pushed into the support base from a pushed-out position into a lowering position.
  • the invention also relates to a support device with it and a ceiling formwork with such a support device.
  • the invention further relates to a method for lowering a building support and a method for raising a building support.
  • the formlining is usually formed by formwork elements in the form of simple formwork panels or so-called frame formwork elements, which usually have a steel or aluminum frame.
  • the formlining is supported by support elements or support devices.
  • support devices can be, for example, building supports, which are often designed as telescopic supports, supporting scaffolding and/or consoles.
  • the ceiling formwork formed by the formwork elements and the support devices is under load, ie the weight of the building ceiling is supported on the building ceiling formwork, in particular the support devices.
  • this load means that the parts of the building ceiling formwork are very difficult to remove.
  • a locking device similar to a telescopic stand is formed, for example by a bolt or a wedge, which fixes the lifting piston in the working position, i.e. hinders its displaceability in the support base.
  • the reciprocating piston is supported on the support base via the bolt or the wedge.
  • the wedge or bolt is loosened, i.e. removed, so that the displacement of the reciprocating piston is restored.
  • the reciprocating piston can thus be automatically transferred from the working position to the lowering position - following gravity.
  • a lowering device in which the reciprocating piston is supported against one another by means of an articulated arm which has an eccentric lever rotatably mounted on the support base and a connecting rod element rotatably mounted on the reciprocating piston.
  • a top dead center position in which the means of a bolt-like Parts of the articulated arm connected to the axis of rotation are stretched, i.e. form an approximately 180° angle with one another, corresponds to the working position in which the reciprocating piston is pushed out relative to the support base, and a bottom dead center position in which the parts of the articulated arm are approximately at an O° angle. Forming angles with each other corresponds to the lowering position in which the reciprocating piston is inserted relative to the support base.
  • a slide which is approximately J-shaped in plan view and has a long leg, a short leg and a base connecting the legs is mounted horizontally displaceably, the long leg forming a stop for the connecting rod element and the short one Leg engages around the connecting rod element in a locking position of the slide, while in a release position it releases a pivoting path of the connecting rod element away from the long leg.
  • the long leg has a wedge-shaped slope, which presses against the connecting rod element when the slide is transferred from the locking position to the release position and thereby dissolves the dead center position.
  • the slide is spring-loaded in the direction of the locking position and must be pulled back against the spring tension to release the connecting rod element.
  • a tool engagement groove is provided on the base of the slide located outside the support base.
  • the load capacity of such a lowering device is limited by the permissible loads of the articulated arm and its bearings; an increase in the possible load capacity is therefore desirable.
  • the articulated arm takes up a comparatively large space in the longitudinal direction of the lowering device and requires a large rotation path of approximately 180° of the eccentric lever. Since the eccentric lever and the connecting rod element shear together, coarse construction site dirt that gets into the area between the moving parts can disrupt the movement and thus make reliable operation more difficult. The same applies to the area between the connecting rod element and the slider. Both areas are encapsulated inside the support base and are difficult to access for cleaning.
  • the task relating to the lowering device is solved at least in partial aspects by a lowering device according to claim 1.
  • the support device according to the invention is specified in claim 13.
  • the ceiling formwork according to the invention has the features specified in claim 14.
  • the method according to the invention for lowering a building support has the steps specified in claim 15.
  • the method according to the invention for lowering a building support has the steps specified in claim 16.
  • Advantageous developments of the invention are specified in the dependent claims and in the description.
  • the lowering device according to the invention is particularly suitable for support devices in the construction sector and for lowering ceiling formwork when stripping a building ceiling.
  • the lowering device has a lifting piston, in particular forming a support head at one end, and a support housing.
  • the lifting piston is mounted in the support housing so as to be displaceable in the direction of a longitudinal axis of the lowering device and can be pushed into the support base from a pushed-out support or working position into a lowered position.
  • the lowering device has two articulated arms, each with a swivel joint arranged between its ends, which are each articulated at one end to the reciprocating piston and at the other end to the support housing, the reciprocating piston and the support housing being supported against one another in the working position via the articulated arms, and an articulated arm holding device, which is set up to hold the articulated arms in an extended position around a top dead center in the working position, in which the articulated arms have a substantially have a straight extension axis, and triggered by introducing a force into each of the two articulated arms, which acts essentially perpendicular to the extension axis and a hinge axis of the swivel joint of the respective articulated arm, directed in a flexion direction of the respective articulated arm and equal to or greater than a dead center overcoming threshold value of the respective one
  • the aim of the articulated arm is to release the articulated arms in order to move the lifting piston into the lowering position.
  • the longitudinal axis of the lowering device coincides with the longitudinal axis of the reciprocating piston and thus defines a direction of movement of the reciprocating piston, which also corresponds to a direction of support.
  • the direction of support is also assumed to be a vertical direction in accordance with the main purpose of the lowering device, with the direction of pushing out the reciprocating piston being assumed to be “up”.
  • the lowering device can also be used in such a way that the longitudinal axis is horizontal or extends obliquely or the lowering device is arranged upside down, i.e. extending downwards.
  • Articulation points and pivot points are understood to be points on respective articulation axes and the articulation axis of the swivel joint, which lie in a (sectional) plane perpendicular to the articulation axes and the articulation axis of the swivel joint.
  • the extended position therefore corresponds to a swivel joint angle of approximately 180°. This is a top dead center position in which all forces in the respective axes act in one line and are supported in an unstable equilibrium. If the swivel joint angle becomes smaller than 180°, the articulated arms bend and the reciprocating piston lowers relative to the support housing.
  • the articulated arms or the respective swivel joint in the working position can also be slightly overstretched beyond the extended position, i.e. by up to 1 or a little more degrees must be pivoted beyond the top dead center and can be supported laterally against a system. This can compensate for tolerances in the mutual position of the components as well as wear effects, so that the working position can be reliably assumed to support the components.
  • a system can be provided in the return pivoting direction, which limits overstretching.
  • the support load can also press the articulated arms further against the system, so that force is required to overcome the dead center position, which can fundamentally contribute to reliable operation.
  • the top dead center position enables optimal power transmission, but is potentially unstable.
  • the articulated arm holding device allows the balance around the top dead center to be safely maintained, which means that the unstable balance is not broken under normal operating conditions.
  • the articulated arm holding device is further set up to be triggered by introducing a force into each of the two articulated arms, which acts essentially perpendicular to the extension axis and a joint axis of the swivel joint of the respective articulated arm, directed in a flexion direction of the respective articulated arm and equal to or greater than a dead center overcoming threshold value of the respective articulated arm is to release the articulated arms in order to move the lifting piston into the lowering position.
  • the provision of two articulated arms enables even large loads to be supported and lowered.
  • the articulated arm When the reciprocating piston is pulled out mechanically upwards, the articulated arm can automatically assume the extended position and be held by the articulated arm holding device, which can improve operational safety and efficiency during handling. By bending the articulated arm, the load on the supported component is completely relieved.
  • the lowering device according to the invention By designing the lowering device according to the invention with a reciprocating piston having a support head corresponding to a telescopic stand, the lowering device according to the invention can be easily integrated into a wide variety of support elements or support devices or coupled to them.
  • the lowering device according to the invention has a simple operating principle that can be applied to a variety of support elements. It enables significant time savings when removing formwork from concrete ceilings and therefore has a positive cost effect.
  • the handling advantage is that there is no or one only a small amount of aid is required when stripping the formwork and it is possible to strip the formwork under load without prior loosening.
  • the articulated arm holding device can comprise at least one resilient pressure piece for at least one of the two articulated arms, which is arranged on or in the respective articulated arm and cooperates with at least one recess, in particular in the form of an elongated hole, on or in the support housing in order to hold the respective articulated arm in the working position in the extended position to maintain the top dead center.
  • the resilient pressure piece can, for example, be provided with a spherical or at least curved outer surface of a pressure end piece, which is resiliently supported by a pressure piece housing, is guided by the pressure piece housing and protrudes from one end of the pressure piece housing.
  • the printing end piece can be a ball.
  • pressure pieces are known per se and can be purchased cheaply as standard components according to the specification, especially with regard to spring travel and pressure force.
  • the pressure piece In the end position, the pressure piece can latch into the respective recess and hold the articulated arm securely in a defined position until the pressure force is overcome by an external force.
  • the at least one resilient pressure piece can have at least one pair of resilient pressure pieces, which are arranged on ends of the respective swivel joint facing away from one another on an inner surface of the support housing, in particular integrated into the joint axis of the swivel joint of each of the two articulated arms. This enables symmetrical operation in which moments in a plane passing through the axis of the swivel joint of the articulated arm can be avoided or at least minimized.
  • the dead center overcoming threshold value of each of the two articulated arms can be determined or at least co-determined by the force that is required to compress the resilient pressure piece or pieces of each of the two articulated arms, so that the resilient pressure piece or pieces are lifted out of the respective recess and attached to one or more of the two articulated arms. rest on the inside of the support housing.
  • each of the two articulated arms can comprise a connecting rod element rotatably connected to the reciprocating piston, an eccentric lever rotatably connected to the support housing and the respective swivel joint connecting the connecting rod element and the eccentric lever.
  • the two articulated arms can be of the same design and arranged in such a way that the directions of flexion of the articulated arms point away from one another.
  • This enables a particularly space-saving arrangement of the articulated arms and symmetrical load absorption in the articulated arms.
  • Each articulated arm can utilize the full width of an interior space of the support housing and/or the reciprocating piston, whereby a particularly high load capacity can be achieved.
  • the articulated arm holding device may include a sliding member having a wedge-shaped portion for introducing force into each of the two articulated arms to release the articulated arms.
  • the introduction of force can be implemented in a particularly simple manner; the mechanism is simple and robust.
  • the wedge-shaped section can have two outer flanks arranged in a wedge shape relative to one another, which are arranged relative to the articulated arms in such a way that when the sliding element is displaced relative to the support housing in a direction substantially along the joint axis of the swivel joint, at least one of the articulated arms has a flank one articulated arm and the other flank rest against the other articulated arm in such a way that the articulated arms are or are bent away from each other due to the displacement.
  • This can ensure that both articulated arms bend equally by actuating a single element, namely the sliding element.
  • the flanks on both sides can have displacement effects directed symmetrically away from one another and thus reliably bend the articulated arms in directions pointing away from one another.
  • the sliding element is arranged on the support housing and is displaceable relative thereto between the articulated arms, in particular the connecting rod elements, or at essentially the same height on a longitudinal axis of the lowering device as at least one of the swivel joints of the articulated arms, the introduction of force is particularly effective and the two articulated arms can be diffracted simultaneously and symmetrically in directions directed away from each other.
  • the sliding element can advantageously have one or two retaining lugs which are designed to engage in a recess of one or both of the articulated arms or to encompass an outer contour of one or both of the articulated arms in order to hold the articulated arm or arms in the extended position around the dead center.
  • the sliding element can therefore simultaneously serve as an articulated arm holding device for holding the articulated arm or arms in the extended position and as an articulated arm release device for triggering the flexion of the articulated arms.
  • a firing pin can be provided, which is guided by the support housing and accessible from outside the support housing in such a way that by striking the firing pin in a direction substantially along the joint axis of the swivel joint of at least one of the articulated arms an impulse can be generated on the sliding element, which is sufficient to introduce a force transmitted by means of the wedge-shaped section into each of the two articulated arms, which acts essentially perpendicular to the extension axis and the articulated axis of the swivel joint of the respective articulated arm, directed in a flexion direction of the respective articulated arm and is equal to or greater than a dead center overcoming threshold value of the respective articulated arm.
  • the sliding element can have a striking plate which the firing pin hits.
  • the striking plate can have any conceivable shape that is suitable for absorbing the impulse and can be designed, for example, as a survey or as an anvil-like element Sliding element or in the form of a hardened surface of the sliding element.
  • the firing pin can be subjected to a spring force by means of a spring element, so that when the firing pin is released, it is accelerated in the direction of and against the sliding element.
  • a spring reset can also be provided, which returns the firing pin and / or the sliding element to the starting position after the hammer or spring has been actuated and thus "arms" the lowering trigger mechanism again for the next lowering process.
  • At least one return spring element in particular in the form of a leg spring, can also be provided, which interacts with at least one of the articulated arms and/or directly with the reciprocating piston in such a way that the reciprocating piston is pressed in the direction of the working position by means of the return spring element. In this way, an automatic or at least supported return of the articulated arm to the extended position can be achieved.
  • a leg spring has an approximately cylindrical center piece and two legs projecting approximately tangentially from the center piece.
  • the return spring element in the form of a leg spring can be integrated into the mechanism in a particularly functional and space-saving manner by mounting the middle piece on the support housing around the axis of rotation of the lower articulation of the respective articulated arm and by supporting the first leg downwards against the support housing and the second leg in the lifting direction is supported against the joint axis of the swivel joint, or the middle piece is mounted around the joint axis of the swivel joint and the first leg is supported downwards against the axis of rotation of the lower linkage of the articulated arm on the support housing and the second leg in the lifting direction against the axis of rotation of the upper linkage of the articulated arm is supported on the reciprocating piston, so that the reciprocating piston can be pressed in the direction of the working position by means of the return spring element.
  • the return spring element can thus be mounted directly on the axis around which it is intended to rotate.
  • the support housing can advantageously have at least one recess such that at least one outward-facing section of at least one of the two articulated arms, in particular of at least one of the two swivel joints, can protrude into the recess and/or through it in the lowered position.
  • the pivoting range of the articulated arms is therefore not limited to the interior of the support housing; the length of the articulated arms can be designed independently of the cross section of the support housing and the reciprocating piston.
  • the links of the articulated arms no longer shear with each other, which also prevents them from jamming due to coarse dirt, so that reliable operation can be ensured and premature wear can be avoided.
  • the swivel joint and the connections of the articulated arms can also be made simpler and more stable using simple axle bolts, since the swivel joint axis does not swing through one of the articulated arm members.
  • At least one housing flap can be attached to the support housing and set up to at least partially cover the at least one recess for shielding against external influences, as soon as the at least an outward-facing section of at least one of the two articulated arms no longer protrudes through the recess.
  • the housing flap can, for example, be designed to be deformable and rigidly attached or to be rigid and hinged, in particular resiliently and/or closing by gravity.
  • the housing flap can have elastic properties, such as thin spring material or plastic material. This allows operational safety to be further improved.
  • a clamping lever element which can be actuated from outside the support housing can be arranged, by actuating it, for example in the form of clamping the clamping lever element with an opening in or an elevation on the support housing, which holds the reciprocating piston in the working or lowering position.
  • the clamping lever element can be provided as an alternative or in addition to other holding elements, such as spring pressure pieces or the like.
  • the support device according to the invention for the construction sector comprises at least one lowering device as described above, the support device being a construction support, in particular a heavy-duty support, or a support structure, in particular in the form of a support tower.
  • the supporting framework can also be or include other general supporting structures such as trusses, support gratings, or other load-bearing elements such as a console or another supporting device familiar to those skilled in the development of supporting structures in the construction sector.
  • the ceiling formwork according to the invention has the support device described above and a formlining element, the formlining element being supported by means of the lowering device.
  • a fresh concrete ceiling is supported via the formlining elements mentioned.
  • Other applications for the support device or lowering device according to the invention, which do not require a formlining element relate, for example, to prefabricated element ceilings or existing concrete ceilings in dismantling, which are supported directly via support supports.
  • the method according to the invention for lowering a building support has the following steps:
  • a lifting piston which is slidably mounted in the support housing and can be pushed from a pushed-out working position into a lowered position
  • two articulated arms each with a swivel joint arranged between its ends, which are each articulated at one end to the reciprocating piston and at the other end to the support housing, the reciprocating piston and the support housing being supported against one another in the working position via the articulated arms are, and an articulated arm holding device, which in the working position holds the articulated arms in an extended position around a top dead center, in which the articulated arms have a substantially straight extension axis
  • the method uses the lowering device described above in the intended manner and can therefore achieve the same advantages and effects as this. For example, it can contribute to significant time and cost savings by facilitating a stripping operation on the construction site.
  • the lifting piston can be held in the working or lowering position by actuating a clamping lever element which is arranged on the free end section of at least one of the articulated arms and can be actuated from outside the support housing.
  • the actuation can take place, for example, in the form of jamming the clamping lever element with an opening in or an elevation on the support housing.
  • a lowering device with a support housing, a reciprocating piston which is slidably mounted in the support housing and can be pushed from a pushed-out working position into a lowering position, two articulated arms, each with a swivel joint arranged between its ends, each of which is attached at one end to the reciprocating piston and at the other end are articulated to the support housing, the reciprocating piston and the support housing being supported against each other in the working position via the articulated arms, and an articulated arm holding device which, in the working position, holds the articulated arms in an extended position around a top dead center, in which the articulated arms are essentially one have a straight extension axis, with the reciprocating piston in the lowering position,
  • Raising the reciprocating piston from the lowering position into the working position for example by means of at least one return spring element of the support housing, in particular in the form of a leg spring, which cooperates with at least one of the two articulated arms in such a way that the reciprocating piston is pressed in the direction of the working position by means of the at least one return spring element, and
  • the articulated arms Holding the articulated arms in the working position by the articulated arm holding device, the articulated arms each being held in the extended position around the top dead center, in which the articulated arms have a substantially straight extension axis, until triggered by the introduction of a force into each of the two articulated arms, which acts essentially perpendicular to the extension axis and a joint axis of the swivel joint of the respective articulated arm, is directed in a flexion direction of the respective articulated arm and is equal to or greater than a dead center overcoming threshold value of the respective articulated arm, the articulated arms are released.
  • the method uses the lowering device described above in the intended manner and can therefore achieve the same advantages and effects as this. For example, it can contribute to significant time and cost savings by facilitating a formwork process on the construction site.
  • Figs. 1 A, 1 B a lowering device according to an exemplary embodiment in a working position A and in a lowering position B in a partially sectioned side view;
  • Figs. 2A, 2B the lowering device from Figs. 1 A, 1 B, in the working position A and the lowering position B in a top view cut along a plane II-II in FIGS. 1 A and 1 B, respectively;
  • FIG. 3 shows the lowering device from FIG. 1 B in the lowering position B in a further sectional side view
  • Figs. 4A-4D show a lowering device according to a further exemplary embodiment in the working position in a partially sectioned side view A, in a partially sectioned front view B, in a top view C sectioned along a plane CC and a top view D sectioned along a plane DD;
  • Figs. 5A, 5B the lowering device from Figs. 4A-4D in the lowered position in a partially sectioned side view A and in a top view B sectioned along a plane BB in FIG. 5A;
  • Fig. 6 shows a spring pressure element in the lowering device of Figs. 4A-5B in two perspective views
  • Fig. 7 shows a support device with a strut and one according to the invention
  • Fig. 8 shows a support device in the form of a building support according to another
  • Fig. 9 shows an upper part of a building support with a conventional lowering mechanism.
  • the lowering device 10 has a longitudinal axis designated L, a support housing 1, a lifting piston 2, and an articulated arm arrangement with two articulated arms 3, 3 ', each with a swivel joint 7, 7' arranged between their respective ends, each articulated arm 3, 3' at one end is articulated via an upper linkage 4, 4 'to the reciprocating piston 2 and at the other end via a lower linkage 5, 5' to the support housing 1.
  • the reciprocating piston 2 is mounted in the support housing 1 so as to be displaceable in the direction of a longitudinal axis L and can be inserted from a pushed-out working position P1 into a lowered position P2.
  • the longitudinal axis L is defined as the vertical axis z and the extension direction of the reciprocating piston 2 is defined as "up", i.e. positively vertical, regardless of the position of the lowering device 10, 10 'or the support device 70, 80 see Figs 7-9, described later in space.
  • the extension direction of the reciprocating piston 2 along the longitudinal axis L coincides with a local vertical direction z.
  • the axes of rotation of the upper linkage 4, 4 ', the swivel joint 7, 7' and the lower linkage 5 , 5 'of the respective articulated arms 3, 3' run parallel to a direction that is perpendicular to the vertical axis z and is defined as the transverse direction y.
  • the reciprocating piston 2 has a shaft section 15 and a flange plate 16 arranged at an upper end of the shaft section 15, and the support base 1 has a shaft section 12 and a flange plate 11 arranged at its lower end.
  • the fl an sch plates 11, 16 also each form a support head of the lowering device and can be connected, preferably welded, to the respective shaft section 12, 15 in a manner known per se, cf. for the reciprocating piston 2 in particular the sectional view in Fig.
  • the shaft section 12 of the support housing 1 is slightly larger in cross section than the shaft section 15 of the reciprocating piston 2, so that the shaft section 12 of the support housing 1 accommodates the shaft section 15 of the reciprocating piston 2 in a displaceable manner in the direction of the longitudinal axis L.
  • the shaft section 12 of the support housing 1 has an upper edge 12a, on which an underside of the flange plate 16 of the reciprocating piston 2 can rest in the lowering position P2.
  • the upper edge 12a can have a depression in the middle, so that the underside of the flange plate 16 of the reciprocating piston 2 only rests in the corners of the upper edge 12a, which can make leveling easier.
  • a stroke H The Difference in height along the longitudinal axis L between the working position P1 and the lowering position P2 is marked by a stroke H.
  • the stroke H can typically be around 20 mm, but this is purely an example.
  • Each articulated arm 3, 3' has a connecting rod element 3a, 3a' as a first or upper link and an eccentric lever 3b, 3b' as a second or lower link.
  • the connecting rod element 3a, 3a ' is articulated to the reciprocating piston 2 at a bound end section via the upper linkage 4, 4'.
  • the eccentric lever 3b, 3b ' is articulated to the support housing 1 at a bound end section via the lower linkage 5, 5'.
  • the connecting rod element 3a, 3a' and the eccentric lever 3b, 3b' are rotatably connected to one another at their free ends by means of the swivel joint 7, 7'.
  • the connecting rod element 3a, 3a' and the eccentric lever are in an extended position of the articulated arm 3, 3', in which a swivel joint angle in the swivel joint 7, 7' between the connecting rod element 3a, 3a' and the eccentric lever 3b, 3b' is approximately 180° 3b, 3b 'in a substantially straight extension of the longitudinal axis L of the support housing 1 in the insertion direction of the reciprocating piston 2, seen beyond, i.e. below, the upper linkage 4, 4' and are supported downwards against the support housing 1, upwards against the reciprocating piston 2 and against each other.
  • An articulation axis S, S' of each articulated arm 3, 3' can be defined as a connecting line which extends through the upper articulation 4, 4' and the lower articulation 5, 5' in the extended position.
  • the articulation axes S, S' are each offset parallel to the longitudinal axis L of the support housing.
  • the joint axis of the swivel joint 4, 4' lies in the articulation axis S, S' of the respective articulated arm 3, 3', and the articulated arm 3, 3' has an extension axis which coincides with the articulation axis S, S'.
  • the extended position of the articulated arms 3, 3 ' defines the highest position of the reciprocating piston 2 and thus determines the working position P1.
  • the reciprocating piston 2 and the support housing 1 are supported against each other in the working position P1 via the articulated arms 3, 3 'in the extended position of the articulated arm 3, 3'.
  • the articulated arms 3, 3' are in a flexed position in which a swivel joint angle in the swivel joint 7, 7' between the connecting rod element 3a, 3a' and the eccentric lever 3b, 3b' is less than 180° and the swivel joint 7, 7' is pivoted laterally relative to the longitudinal axis.
  • the articulated arms 3, 3' bend laterally the articulation axis S, S' away in opposite directions, i.e. pointing away from each other.
  • the connecting rod element 3a, 3a' can be designed as a tubular or monolithic lever arm.
  • the eccentric lever 3b, 3b' can have two parallel, plate-shaped cheeks 20a, 20b or 20a', 20b', which accommodate the connecting rod element 3a, 3a' in the area of the swivel joint 7, 7', see Fig. 2B.
  • the upper linkage 4, 4' has a continuous shaft or bolt which is mounted in bores in walls of the shaft section 15 of the reciprocating piston 2 and the connecting rod element 3a, 3a' of the articulated arm 3, 3' and defines an upper linkage axis.
  • the lower linkage 5, 5' has a continuous shaft or bolt which is mounted in bores in walls of the shaft section 12 of the support housing 1 and the eccentric lever 3b, 3b' of the articulated arm 3, 3' and defines a lower linkage axis.
  • the swivel joint 7, 7' has a continuous shaft or bolt which is mounted in holes in walls of the connecting rod element 3a, 3a' and the eccentric lever 3b, 3b' of the articulated arm 3, 3' and defines a swivel joint axis.
  • disks can be provided which are arranged on the respective bolt.
  • pivot bearings can also be provided.
  • the bolt of the upper linkage 4, 4 ' can protrude through a guide opening, such as an elongated hole, in the wall of the shaft section 12 of the support housing 1 or disappear inside the support housing 1.
  • the axial securing of the bolts can take place at one end via a head of the bolt and at the other end via a fastening means 47, such as a snap ring, a locking nut, a locking pin or the like, as for the lower linkage 5, 5 'of another exemplary embodiment in Fig. 4B, 4C shown.
  • a fastening means 47 such as a snap ring, a locking nut, a locking pin or the like
  • bolts of the upper linkage 4, 4' and/or the lower linkage 5, 5' can also be inserted into respective bores in a wall of the shaft section 15 of the reciprocating piston 2 or the shaft section 11 of the support housing 1 or the cheeks 20a, 20b, 20a', 20b', the eccentric lever 3b, 3b' can be screwed in or pressed in or driven in.
  • the reciprocating piston 2 is in the working position P1. This corresponds to a dead center position of the articulated arm. If necessary, in the working position P1, the articulated arm 3, 3 'can also be slightly overstretched, approximately 0.5, 5'° or 1°, beyond the dead center position, i.e.
  • the lowering device 10 of this exemplary embodiment has an articulated arm holding device which is designed to hold the articulated arms 3, 3 'in the extended position around the top dead center in the working position P1, in which the articulated arms 3, 3' have the essentially straight extension axis.
  • the articulated arm holding device has a sliding element 9 which is slidably mounted in side walls of the shaft section 12 of the support housing 1 in a release direction 28 which runs parallel to the joint and articulation axes of the articulated arms 3, 3 ', cf. Fig. 2A.
  • the sliding element extends in the horizontal direction between the articulated arms 3, 3 '.
  • the sliding element 9 is mounted at a height with respect to the longitudinal axis L so that it extends at the level of the connecting rod elements 3a, 3a 'between the articulated arms 3, 3'.
  • the sliding element 9 is biased against the release direction 28 in a holding direction 25 by means of a driver 14 and a spring element 13, which is supported on the wall of the support housing 1.
  • the sliding element 9 has an end section 21 in which a tool engagement groove 22 is formed. At the tool engagement groove 22, the sliding element 9 can be gripped with a tool in order to move it in the release direction 28 by pulling the tool on the sliding element 9 in the release direction 28.
  • the sliding element 9 also has two retaining lugs 23, 23 'which point opposite to the release direction 28.
  • Each connecting rod element 3a, 3a' has a recess 24, 24' into which the respective retaining lug 23, 23' can engage.
  • the respective connecting rod element 3a, 3a' Due to the engagement of the retaining lugs 23, 23' in the recesses 24, 24', the respective connecting rod element 3a, 3a' is blocked from pivoting out, the articulated arms 3, 3' are blocked against bending in the extended position and the reciprocating piston 2 is in the working position P1 locked.
  • the positioning of the sliding element 9 in a vertical position is entirely optional and For example, it can also be selected at the level of the swivel joints 7, 7 'or the eccentric lever 3b, 3b'.
  • the retaining lugs 23, 23' can also completely surround the connecting rod element 3a, 3a' or another part of the articulated lever 3, 3', so that a recess 24, 24' is unnecessary in this case.
  • a wedge-shaped section is formed, which is designed to introduce a force into each of the two articulated arms when the sliding element 9 is actuated in the release direction 28.
  • two wedge-shaped outer flanks 26, 26' are formed on the sliding element 9 in such a way that the sliding element 9 widens against the release direction 28.
  • the connecting rod elements 3a, 3a' have mutually facing wedge-shaped counter surfaces 27, 27', against which the wedge-shaped flanks 26, 26' of the sliding element 9 can rest in order to force the connecting rod elements 3a, 3a' apart when actuated in the release direction 28.
  • the sliding element 9 is actuated from the working position P1, in which the retaining lugs 23, 23 'are in engagement with the recesses 24, 24', by pulling on the end section 21, for example with the help of the tool engagement groove 22 is used to move the sliding element 9 in the release direction 28.
  • the retaining lugs 23, 23' are first released from the recesses 24, 24', and then the wedge-shaped lateral flanks 26, 26' of the sliding element 9 come into contact with the counter surfaces 27, 27' of the connecting rod elements 3a, 3a'.
  • the connecting rod elements 3a, 3a' Since the locking of the connecting rod elements 3a, 3a' is released, the connecting rod elements 3a, 3a' can be pushed apart, the articulated arms 3, 3' can bend, and the reciprocating piston 2 can reach the lowering position P2.
  • the retaining lugs 23, 23' rest laterally on flanks 29, 29' of the connecting rod elements 3a, 3a' under the restoring effect of the spring element 14, without hindering the pivoting path of the connecting rod elements 3a, 3a'.
  • the reciprocating piston 2 can therefore be brought at any time from the lowering position P2 to the working position P1, where the retaining lugs 23, 23 'lock into the recesses 24, 24' under the action of the spring element 14 and secure the working position P1.
  • the sliding element 9 thus forms not only an articulated arm holding device, but also an articulated arm release device.
  • an impulse to move the sliding element 9 to apply the force to the articulated arms 3, 3 'to trigger the bending of the articulated arms 3, 3', a pull on the end section 21 of the sliding element 9 is sufficient.
  • the impulse can also be applied by hitting the arm with a hammer end of the sliding element 9 that is accessible from the other side.
  • a force that is substantially perpendicular to the axis of rotation of the swivel joint 7, 7' and to the longitudinal axis L of the support housing 1 can be directed in a flexion direction of each articulated arm 3, 3' and is equal to or greater than the dead center overcoming threshold value to release the articulated arm 3, 3 ', be exerted on the articulated arm 3, 3' in order to move the reciprocating piston 2 into the lowering position P2.
  • the sliding element 9 can be subjected to a spring force by means of a further spring element (not shown in detail), so that when the sliding element 9 is released, it is accelerated in the triggering direction 28.
  • the sliding element 9 itself does not necessarily have to be accessible from the outside, but can be a locking element, for example in the form of a catch, can be provided, which blocks the path of the sliding element 9 and which can be actuated from the outside in order to release the sliding element 9 so that it can be accelerated by the spring element.
  • a restoring mechanism can also be provided, which returns the spring-loaded sliding element 9 to a starting position against the spring force, the locking element being able to spring back into the locking position, if necessary due to a spring preload or its own elasticity, in order to "arm" the sliding element 9 again.
  • the reciprocating piston 2 is biased in the extension direction by return spring elements 30, 30', see Fig. 3.
  • Each return spring element 30, 30' acts with one of the articulated arms 3, 3' and/or directly with the reciprocating piston 2 and/or directly with the support housing 1 in such a way that the reciprocating piston 2 is pressed in the direction of the working position P1 by means of the return spring element 30, 30 '.
  • the return spring element 30, 30 ' is designed in this exemplary embodiment as a leg spring, the approximately cylindrical middle piece 31, 31 'is mounted about the axis of rotation of the lower linkage 5, 5', with a first leg 32, 32' and a second from the middle piece Legs 33, 33' protrude approximately tangentially.
  • the first leg 32, 32' is supported downwards against a surface 11a of the flange plate 11 of the support housing 1 and the second leg 33, 33' is supported in the stretching direction or lifting direction against the axis of the swivel joint 7, 7'.
  • the return spring element 30, 30' is compressed in the flexed position of the articulated arm 3, 3', so that the spring force initially acts in a spreading direction of the return spring element 30, 30' around the axis of the lower linkage 5, 5'. This forces the eccentric lever 3b, 3b' to rotate around the lower linkage 5, 5', straightens itself and thereby stretches the swivel joint 7, 7', and the reciprocating piston 2 is pressed in the extension direction.
  • the reciprocating piston 2 can thus be pressed in the direction of the working position P1 by means of the return spring elements 30, 30 '.
  • the return spring element 30, 30 ' In the extended position, cf. Fig. 1 A, the return spring element 30, 30 'can also exert a preload in the stretching direction and support the dead center position.
  • the return spring element 30, 30 ' enables the reciprocating piston 2 to be automatically returned to the working position P1. The rapid lowering of the lowering device 10 is therefore activated.
  • a recess 12b, 12b' is provided in the wall of the shaft section 12 of the support housing 1, through which an outward-facing section of the articulated arm 3, 3', in particular the swivel joint 7, 7', passes beyond the limits in the lowered position P2 the cross section of the shaft section 12 of the support housing 1 can protrude. Therefore, comparatively long articulated arm members 3a, 3a ', 3b, 3b' can be used without the dimensions of the shaft section 12 having to be changed. This means that the swivel joint angle in the lowered position P2 does not have to be smaller than approximately 90° in order to achieve the required stroke H.
  • FIGS. 4A to 5B A lowering device 10 'according to a further exemplary embodiment is shown in FIGS. 4A to 5B shown.
  • the lowering device 10' of this exemplary embodiment is a modification of the previously described exemplary embodiment and differs from it only with regard to the features described below.
  • the structure of the lowering device 10 'with support housing 1, reciprocating piston 2, articulated arms 3, 3', links 4, 4', 5, 5', swivel joint 7, 7' therefore basically corresponds to that of the lowering device 10 of the previous exemplary embodiment.
  • a sliding element 9 of this exemplary embodiment which is otherwise designed and arranged in accordance with the sliding element 9 of the previous exemplary embodiment, has no holding lugs, and the articulated arm holding device instead has resilient pressure pieces 40, 40 ', which are in recesses 41, 41 'on the support housing intervene from angle holes.
  • the articulated arm holding device has a pair of resilient pressure pieces 40, 40', which are arranged on the articulated arm 3, 3' facing away from one another and facing an inner surface of the support housing 1, and which have at least one respective recess 41, 41' in the form of an elongated hole in the support housing 1 cooperate to hold the articulated arm 3, 3 'in the extended position around the dead center in the working position P1.
  • the resilient pressure pieces 40, 40' are integrated into a support shaft of the swivel joint 7, 7' at opposite ends or end faces 45, 45' of the support shaft.
  • the resilient pressure pieces 40, 40 ' can each have a pressure end piece 43, which is resiliently supported, here by means of a pressure element 24 located in the pressure piece housing 42, such as a compression spring or a gas cushion, from a pressure piece housing 42, is guided by the pressure piece housing 42 and from a 6.
  • the pressure end piece 43 can have a spherical or at least spherical or curved outer surface and can in particular be designed as a spherical pressure end piece 43, which can rotate in the pressure piece housing 42. In modifications, pressure end pieces with a wedge-shaped or conical outer surface are also possible.
  • the dead center overcoming threshold value is therefore determined or at least co-determined by the force that is required to compress the resilient pressure piece(s) 40, 40', so that the resilient pressure piece(s) 40, 40' are lifted out of the respective recess 41, 41' and on one/the inside of the support housing 1 rest.
  • the holding effect of each resilient pressure piece 40, 40' is determined, among other things, by the shape of the pressure end piece 43, the depth of penetration into the recess 41, 41' and the shape of an edge of the recess 41, 41'.
  • resilient pressure piece 40, 40 ' can be sufficient to achieve the holding effect, but a pair arrangement has the advantage of a symmetrical application of force and can reduce transverse forces in the articulated arm 3, 3' and bending moments on the swivel joint 4, Avoid 4'.
  • more than two resilient pressure pieces 40, 40' or more than one pair of resilient pressure pieces 40, 40' can also be provided in order to increase the holding effect or the holding security.
  • the structure, arrangement and storage and function of the sliding element 9 with a view to overcoming the dead center position of the articulated arms 3, 3 'by contacting the wedge-shaped outer flanks 46, 46' on counter surfaces 27, 27' of the connecting rod elements 3a, 3a' Displacement along the release direction 28 corresponds to the description of the sliding element 9 of the previous exemplary embodiment, see FIGS. 4D, 5B.
  • sliding element 9 of this exemplary embodiment does not have any retaining lugs, such retaining lugs as in the first exemplary embodiment can be present in order to serve as additional securing and locking of the articulated arm holding device.
  • one or both of the recesses 12b, 12b 'in the wall of the shaft section 12 of the support housing 1 is covered by a housing flap, so that the respective articulated arm 3, 3' also swings out in the direction is covered.
  • the housing flap can be made of a rigid material and can be pivotally mounted hanging on the support housing 1 by means of an articulation using a pin, clip or bolt or the like.
  • the housing flap In the working position P1, the housing flap sways under the effect of its own weight down and rests on an outer surface of the shaft section 12 of the support housing 1, so that the recess 12b, 12b 'is covered.
  • the housing flap In the lowered position P2, the housing flap is also pushed outwards by the articulated arm 3, 3 ', which bends outward laterally, and opens a little by pivoting around the linkage.
  • the housing flap can also be biased in the closing direction by a spring element.
  • the housing flap can be made of a flexible, in particular elastic, material and can be suspended in the upper region of the shaft section 12 of the support housing 1 via a plug or the like.
  • the housing flap covers the recess 12b, 12b', so that the articulated arm 3, 3' is also covered in the swing-out direction, and is pushed outwards by the articulated arm 3, 3' in the lowered position P2.
  • the pushing away does not occur by pivoting around an articulation, but rather in the form of a bend in the material of the housing flap, and the return to the closed position takes place by gravity and/or the housing flap's own elasticity.
  • a clamping lever (not shown in detail) can be provided to lock one or both of the articulated arms 3, 3 'in the extended position.
  • the clamping lever can, for example, be rotatably mounted on the connecting rod element 3a, 3a' of the respective articulated arm 3, 3' and can be pivoted between a clamping position and a release position.
  • the clamping lever In a clamping position, the clamping lever can engage with one end in a clamping groove or behind an elevation which is formed in the base plate 11 of the support housing 1 when the articulated arm 3, 3 'is in the extended position.
  • the end of the clamping lever In the release position, the end of the clamping lever can be released from the clamping groove or elevation, so that the pivoting movement of the articulated arm 3, 3 'is also released.
  • Such a clamping lever can thus form a locking device for the articulated arm 3, 3 'in the extended position or the working position P1 of the reciprocating piston 2.
  • the clamping lever can also be or form an articulated arm holding device in the sense of the invention. By using such a locking device, a precise vertical alignment of the reciprocating piston 2 in the dead center position can be achieved and a simple unlocking mechanism for lowering the reciprocating piston 2 can be provided.
  • a clamping lever can also be mounted on the support housing 1 instead of on the articulated arm 3, 3 'and, in the clamping position, can engage in or behind an engagement element on the articulated arm 3, 3'.
  • FIG. 5 shows a support device 70 with a strut 71 and the lowering device 10 of the first exemplary embodiment, the support device 70 also being an embodiment of the invention.
  • the support device 70 is suitable for the construction sector, so the strut 71 can be, for example, a construction support, in particular a heavy-duty support, or a stay of a support structure, such as a support tower.
  • the strut 71 has a flange plate 72 at the end, which fits together with the flange plate 16 of the reciprocating piston 2 of the lowering device 10.
  • the flange plate 72 of the strut 71 has a drilling pattern of holes that at least partially corresponds to holes on the flange plate 16 of the reciprocating piston 2, so that the flange plates 16, 72 can be screwed and/or pinned together. To make assembly easier, centering elements and counter-centering elements can also be provided.
  • Fig. 6 shows a support device 80 with a strut 61 designed as a heavy-duty support for the construction sector and the lowering device 10 of the first exemplary embodiment.
  • the heavy-duty support or strut 61 is designed in a manner known per se in the form of a telescopic construction support with an outer tube 82 in which an inner ear 83 is guided in a longitudinally displaceable manner.
  • the inner tube 83 is provided with a head plate 84 at its free end.
  • a locking bolt 85 is used here, which passes through through recesses 86 in the inner tube 83 and is guided in a corner hole 91 in the outer tube 82.
  • the locking bolt 85 is supported against the outer tube 82 in an axial direction to the longitudinal axis E of the support device 80 on an adjusting nut 87, which engages in an external thread 88 of the outer tube 82.
  • the lowering device 10 is attached to the strut 61 on the foot side, purely as an example.
  • the support head 16 of the lowering device 10 is screwed to a base plate 89 of the outer tube 82 of the strut 61 or can be attached to the base plate 89 in another way.
  • the lowering device 10 can also be attached to the head plate 84 of the building support.
  • the adjusting nut 87 can be attached to the adjusting nut 87 by means of a Handle 90 can be moved. In this way, the adjusting nut 87 is actuated as intended to raise the inner tube 83 relative to the outer tube 82.
  • the telescopic strut 61 is well known in the construction industry and is widely used.
  • the loosening process can be tedious and time-consuming because the adjusting nut 87 is difficult to move under load due to tension and friction in the thread, with this problem increasing over time due to contamination, aging and wear, corrosion and mechanical damage to the thread.
  • the elements required for release are often located in an elevated, difficult-to-access location, which requires the use of scaffolding, ladders, risers or other equipment or operation in a hanging position from above.
  • the consequences are difficult lowering of the building supports, the need for multiple hammer blows on a rotating element or the use of special tools, a lot of time and effort when lowering ceiling supports and increases in costs, especially in premium markets.
  • the use of the lowering device 10 according to the invention makes the lowering process considerably easier and faster, which can also lead to noticeable savings. Nevertheless, the conventional strut 61 can continue to be used together with the lowering device 10 according to the invention, with the adjusting nut 87 only being used for length presetting or length adjustment without load, but lowering only takes place via the lowering device 10. It should be noted that the lifting into the working position P1 can take place on site via the lowering device 10. In practice, however, it can be advantageous to assemble and place the support device 80 and the lowering device 10 with the reciprocating piston 2 in the working position P1 and to make the final length adjustment for supporting a formwork or the like via the adjusting nut 87.
  • All of the support devices 70, 80 described form independent exemplary embodiments of the invention. Even if each support device 70, 80 is described in connection with the first exemplary embodiment of a lowering device 10, in each Support device 70, 70 ', 80, any of the lowering devices 10, 10' or one of their described variants can be used.
  • the lowering device 10, 10 'according to the invention can also be used in other applications, such as on a road slab console.
  • a road slab console can be formed from a triangular steel support structure with holes forming various screwing options.
  • the lowering device 10, 10 'according to the invention can be attached to one of these bores with guide bolts.
  • the steel support structure can be adjustable in such a way that it can be adapted to different angles of inclination of side walls of a box structure for formwork of a roadway slab.
  • the support head 16 of the reciprocating piston 2 can have a roller over which, for example, a rail of a ceiling formwork in a feed concreting process, i.e. H. a cycle sliding system, as is usually used in bridge construction.
  • An additional guide pin can be guided through pin through holes in the support housing 1 and guide slots in the reciprocating piston 2.
  • the present invention creates a retrofittable, compact rapid lowering device, in particular for loaded building supports, which can completely relieve the load on the building supports, simplify construction site processes and improve the formwork speed of known ceiling formwork systems.
  • the lowering of large loads can be made possible by applying slight force, such as a simple hammer blow and/or an automatic reset of the lowering mechanism after lifting the ceiling support.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

La présente invention concerne un système d'abaissement (10) pour le secteur de la construction, en particulier pour abaisser des coffrages de plafond pendant le retrait de coffrages du plafond d'un bâtiment. Le système d'abaissement comprend : un boîtier de support (1) ; un piston alternatif (2) qui est monté dans le boîtier de support (1) de manière à pouvoir être déplacé dans la direction d'un axe longitudinal (L) du système d'abaissement (10) et qui peut être poussé entre une position de travail étendue (P1) et une position abaissée (P2) ; deux bras articulés (3, 3') qui présentent chacun une articulation rotative (7, 7') qui est située entre ses extrémités, chaque articulation rotative étant articulée au niveau d'une extrémité au piston alternatif (2) et au niveau de l'autre extrémité au boîtier de support (1), le piston alternatif (2) et le boîtier de support (1) étant supportés l'un contre l'autre dans la position de travail (P1) au moyen des bras articulés (3, 3') ; et un dispositif de maintien de bras articulé qui est conçu pour maintenir chacun des bras articulés (3, 3') dans la position de travail (P1) dans une position étendue autour d'un point mort haut, dans ladite position étendue les bras articulés (3, 3') ayant un axe d'extension sensiblement droit, et pour libérer les bras articulés (3, 3') afin de déplacer le piston alternatif (2) dans la position abaissée (P2), ladite libération étant déclenchée par l'introduction d'une force dans chacun des deux bras articulés (3, 3'), ladite force agissant sensiblement perpendiculairement à l'axe d'extension et un axe d'articulation de l'articulation rotative (7, 7') du bras articulé (3, 3') pertinent étant dirigé dans une direction de flexion du bras articulé (3, 3') pertinent et étant supérieur ou égal à une valeur seuil de dépassement de point mort haut du bras articulé (3, 3') pertinent. L'invention concerne également : un dispositif de support comprenant le système d'abaissement ; et un coffrage de plafond comprenant un tel dispositif de support. L'invention concerne également : un procédé d'abaissement d'un support de construction ; et un procédé de levage d'un support de construction.
PCT/EP2023/072548 2022-08-17 2023-08-16 Système d'abaissement, dispositif de support et coffrage de plafond, ainsi que procédé d'abaissement et d'élévation d'un support de construction WO2024038082A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022120781.1 2022-08-17
DE102022120781.1A DE102022120781A1 (de) 2022-08-17 2022-08-17 Absenkeinrichtung, Stützvorrichtung und Deckenschalung, sowie Verfahren zum Absenken und Anheben einer Baustütze

Publications (1)

Publication Number Publication Date
WO2024038082A1 true WO2024038082A1 (fr) 2024-02-22

Family

ID=87797726

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/072548 WO2024038082A1 (fr) 2022-08-17 2023-08-16 Système d'abaissement, dispositif de support et coffrage de plafond, ainsi que procédé d'abaissement et d'élévation d'un support de construction

Country Status (2)

Country Link
DE (1) DE102022120781A1 (fr)
WO (1) WO2024038082A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US260191A (en) * 1882-06-27 Combined turn-table and jack for street-cars
WO2019170192A1 (fr) 2018-03-09 2019-09-12 Peri Gmbh Dispositif d'abaissement ainsi que dispositif de support et coffrage de plafond doté d'en tel dispositif d'abaissement
EP3951117A1 (fr) * 2020-08-07 2022-02-09 Peri AG Outil et procédé de frappe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD141432A1 (de) 1979-01-16 1980-04-30 Otto Bahro Schnellabsenkvorrichtung,insbesondere fuer decken-und balkenschalung
GB2344609B (en) 1998-12-08 2002-07-24 Sgb Services Plc Improvements in or relating to a scaffolding arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US260191A (en) * 1882-06-27 Combined turn-table and jack for street-cars
WO2019170192A1 (fr) 2018-03-09 2019-09-12 Peri Gmbh Dispositif d'abaissement ainsi que dispositif de support et coffrage de plafond doté d'en tel dispositif d'abaissement
EP3951117A1 (fr) * 2020-08-07 2022-02-09 Peri AG Outil et procédé de frappe

Also Published As

Publication number Publication date
DE102022120781A1 (de) 2024-02-22

Similar Documents

Publication Publication Date Title
EP3762567B1 (fr) Dispositif d'abaissement ainsi que dispositif de support et coffrage de plafond doté d'en tel dispositif d'abaissement
EP3347300B1 (fr) Grue mobile permettant un déplacement angulaire d'une rallonge de flèche principale par rapport à une flèche principale d'une grue mobile
EP3656729B1 (fr) Dispositif préhenseur ainsi que procédé de préhension d'une palette de transport
WO2009118198A2 (fr) Dispositif pour démolir des constructions
WO2012016714A1 (fr) Ferrure de support destinée au support réglable en hauteur d'un rail de support et de guidage s'étendant sensiblement horizontalement, et système de rail muni d'une telle ferrure de support
DE3049971C2 (fr)
WO2024038082A1 (fr) Système d'abaissement, dispositif de support et coffrage de plafond, ainsi que procédé d'abaissement et d'élévation d'un support de construction
WO2024038078A1 (fr) Système d'abaissement, dispositif de support et coffrage de plafond, ainsi que procédé d'abaissement et d'élévation d'un support de construction
EP3093420B1 (fr) Dispositif de fixation de portes
WO2024038084A1 (fr) Système d'abaissement, dispositif de support et coffrage de plafond, ainsi que procédé d'abaissement et d'élévation d'un support de construction
DE102010027873A1 (de) Teleskopierbares Vertikalrohr mit Anschlag
DE102021122295A1 (de) Gerüstriegel
DE2200152C3 (de) Vorrichtung zum Schalen von Betonwänden
DE202011001272U1 (de) Druckspanngerät
EP3653809B1 (fr) Système de coffrage
EP4056785B1 (fr) Dispositif d'appui, élément d'appui du plafond, système de coffrage du plafond et procédé de décoffrage d'un panneau de coffrage du plafond
DE102010027865A1 (de) Teleskopierbares Vertikalrohr mit Kopf- oder Fußplatte
DE202017104471U1 (de) Vorrichtung zum Herauspressen eines vertikalen Trägers einer Trägerbohlwand aus dem Erdreich
DE2508274A1 (de) Geruestverbindung
EP2902563B1 (fr) Marquise
DE10228604B3 (de) Beschlag für ein Fenster oder eine Tür
DE202018004396U1 (de) Feststellvorrichtung für Türen
EP0810328A2 (fr) Butée pour étrésillon utilisé dans le blindage des tranchées
DE29803330U1 (de) Hubvorrichtung
WO2002034476A1 (fr) Cadre porteur comprenant un systeme porteur a hauteur reglable

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23758549

Country of ref document: EP

Kind code of ref document: A1