EP3215689B1 - Mécanisme de levage pour un appareil de levage de plaques de construction, appareil de levage comportant un tel mécanisme, procédé de levage à l'aide d'un tel appareil - Google Patents

Mécanisme de levage pour un appareil de levage de plaques de construction, appareil de levage comportant un tel mécanisme, procédé de levage à l'aide d'un tel appareil Download PDF

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Publication number
EP3215689B1
EP3215689B1 EP15784085.1A EP15784085A EP3215689B1 EP 3215689 B1 EP3215689 B1 EP 3215689B1 EP 15784085 A EP15784085 A EP 15784085A EP 3215689 B1 EP3215689 B1 EP 3215689B1
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EP
European Patent Office
Prior art keywords
control shaft
lever
mechanism according
segment
rotation
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.)
Active
Application number
EP15784085.1A
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German (de)
English (en)
French (fr)
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EP3215689A1 (fr
Inventor
Lionel Marcon
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.)
Pierre Grehal et Cie SA
Original Assignee
Pierre Grehal et Cie SA
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 Pierre Grehal et Cie SA filed Critical Pierre Grehal et Cie SA
Priority to PL15784085T priority Critical patent/PL3215689T3/pl
Publication of EP3215689A1 publication Critical patent/EP3215689A1/fr
Application granted granted Critical
Publication of EP3215689B1 publication Critical patent/EP3215689B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/02—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with racks actuated by pinions
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/162—Handles to carry construction blocks
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/18—Implements for finishing work on buildings for setting wall or ceiling slabs or plates
    • E04F21/1805—Ceiling panel lifting devices
    • E04F21/1811—Ceiling panel lifting devices with hand-driven crank systems, e.g. rope, cable or chain winding or rack-and-pinion mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements

Definitions

  • the invention relates to a lifting mechanism for a building plate lifting apparatus, a building plate lifting apparatus comprising such a mechanism, as well as a method of lifting building plates using such. apparatus.
  • the invention relates to lifting and handling devices used during work, for the handling and positioning of heavy objects, such as material sheets (plasterboard, wood panels, etc.) to produce false ceilings or installation under crawling or on partitions.
  • heavy objects such as material sheets (plasterboard, wood panels, etc.) to produce false ceilings or installation under crawling or on partitions.
  • a plate lifter This type of device, called a plate lifter, has already been described, for example in the document FR2538437 or US2337796 .
  • the latter describes a lifting mechanism comprising a telescopic mast comprising a fixed segment and a first telescopic segment slidably mounted inside the fixed segment; a drive system comprising rollers in direct engagement with a portion of the mast; a drive shaft engaged with the rollers and attached to a ratchet lever; a reversible locking means of the portion of the mast, shaped to block the mast by friction in the absence of action by a user and allow the mast to fold up by gravity gradually and in a manner controlled by the user.
  • a plate lifter The general structure of a plate lifter is as follows: a telescopic mast, controllable by a lifting mechanism, is mounted on a rolling base. A plate holder is pivotally mounted at the end of the mast via a pivot mechanism.
  • the telescopic mast comprises a first fixed element, and at least one telescopic mobile element relative to the fixed element.
  • the mast comprises two telescopic movable elements.
  • a reeving mechanism comprising a winch, several return pulleys and a cable connected to the winch, passing through the pulleys and through the telescopic elements of the mast.
  • the mechanism since the mechanism is accessible, the risks of a user's fingers being trapped are significant.
  • the telescopic elements of the mast must be open sections for leave a free passage for the cables when raising or lowering the mast. Such a structure weakens the mechanical strength of the mast.
  • the second type of lifting mechanism is a worm motorized mechanism engaged with one of the telescopic elements of the mast. This device is described in the document EP0969165 .
  • the plate lifter includes a motor whose shaft is coupled to a worm through a set of deflection pulleys.
  • the worm is placed inside the mast, coaxially and guided inside the telescopic mast.
  • the worm is engaged with a nut bearing integral with the first mobile element of the telescopic mast.
  • the second movable element is erected by cables which stretch as the first movable element rises.
  • the second movable element is constituted by an open section, of complementary shape to the first movable element so as to be guided during assembly, in order to leave a free passage for the cable.
  • such a plate lifter has a very significant weight and size because it includes not only a fixed motor offset relative to the mast, but also the energy source, most often a battery.
  • the dimensioning of the telescopic elements of the mast must be done as accurately as possible to ensure good stability of the plate lifter, in particular when the mast is deployed (high position of the plate lifter)
  • the friction is therefore important and requires a contribution of important energy.
  • wear is important.
  • the present invention therefore aims to provide a lifting mechanism, advantageously for a plate lifter, silent, safe (that is to say without the risk of injuring the user), fast, versatile (that is to say that can motor or hand operated), and easy to maintain.
  • the invention relates to a lifting mechanism according to claim 1.
  • the figure 1 illustrates a plate lifter provided with a lifting mechanism according to the invention in the position of use.
  • the plate lifter 1 comprises a lifting mechanism 100 to which a rolling base 200 and a plate support 300 are attached.
  • the lifting mechanism 100 comprises a telescopic mast 10 comprising a fixed segment 11 and a first telescopic segment 12 slidably mounted inside the fixed segment 11.
  • a rectilinear rack 13 is fixed along the first telescopic segment 11.
  • the rack 13 is engaged with a gear system illustrated in more detail at figures 2 and 3 .
  • the mast segments are shown transparently for ease of understanding.
  • the gear system 20 includes a pinion 21 in direct engagement with the rack 13, and a drive shaft 22 in engagement with the pinion 21 is attached to a handwheel 23.
  • the drive shaft 22 passes through the segment wall. fixed 11.
  • the lifting mechanism according to the invention also comprises a reversible locking means of the control shaft, shaped to block the control shaft 22 in rotation in the absence of action by a user.
  • a reversible locking means of the control shaft shaped to block the control shaft 22 in rotation in the absence of action by a user.
  • the rack 13 is fixed to the first telescopic segment 12 so that the teeth 131 of the rack 13 are perpendicular to the first telescopic segment 12.
  • This arrangement makes it possible to limit the size of the lifting mechanism and, in particular, of the gear system.
  • the figure 4 illustrates an advantageous embodiment in which the control shaft 22 is indirectly engaged with the pinion 21 by means of a reduction system 24, arranged so that the pinion 21 rotates faster than the drive shaft. command 22.
  • Such a mechanism makes it possible to erect the telescopic mast quickly and without effort.
  • This lifting mechanism is extremely quiet compared to ratchet winch systems: it generates only 46 dB (measured using an iphone® with the “Decibel ultra ”® application, 30 cm from the winch, and a ambient noise at 31 dB), while a ratchet winch system conforming to the document FR2758150 generates 87 dB.
  • the lifting mechanism according to the invention further comprises a second telescopic segment 14 slidably mounted inside the first telescopic segment 12.
  • the fixed segment 11 has a rectangular section
  • the first telescopic segment 12 has a square section
  • the second telescopic segment 14 has a circular section.
  • the second telescopic segment 14 has an outer diameter D2s less than or equal to an inner edge of the first telescopic segment 12.
  • the second telescopic segment 14 therefore only has four lines of contact with the first telescopic segment 12, which limits friction (and therefore the efforts required to erect the mast), while ensuring precise guidance between the two segments.
  • the fixed segment 11 of rectangular section has a small inner side of dimension greater than or equal to the outer edge L1s of the first telescopic segment 12, and a large inner side of dimension Lsf greater than or equal to the outer edge L1s of the first telescopic segment. added to the width Lc of the rack 13.
  • the lifting mechanism according to the invention therefore not only allows precise guidance and limits friction, but also a limited space requirement since the pinion 21 and the rack 13 are housed inside the fixed segment 11 of the mast 10.
  • the mechanism according to the invention comprises a traction cable 30, a first end 31 of which is fixed to the fixed segment 11 and a second end 32 is fixed to a lower end of the second telescopic segment. 14.
  • the cable 30 is engaged around a return pulley 40 fixed to an upper end of the first telescopic segment 12.
  • the flywheel 23 rotates around the control shaft 22
  • the first telescopic segment is erected and upwards thanks to the pinion 21 and the rack 13.
  • the pulley 40 fixed to the first telescopic segment 12 rises.
  • the cable 30 is then stretched and the second telescopic segment 14 rises.
  • the second telescopic segment 14 is of circular section and that the first telescopic segment 12 is of square section makes it possible to provide a space in which the cable 30 can extend without risk of jamming between the two telescopic segments.
  • the figures 9 and 10 illustrate an embodiment of the mast allowing such an arrangement.
  • the second telescopic segment with circular section 14 comprises a lower end 14a provided with a notch 14b and welded to a section 15 of square section less than or equal to the internal section of the first telescopic segment 12.
  • the inside of the profile is provided with a hook for fixing the traction cable 30.
  • the cable can be easily fixed in the second telescopic segment.
  • the lower end 14a provided with a notch 14b is welded to a profile 15 of square section so that the notch covers a corner of the profile 15, which allows sufficient passage to the cable 30 without risk. that it is not crushed between the two telescopic segments 14 and 12.
  • the kinematics are very fast since in the lifting mechanism according to the invention, the middle segment and the inner segment are erected simultaneously: while the first segment telescopic rises out of the fixed segment, the second telescopic segment rises out of the first telescopic segment.
  • the control wheel 23 is equipped with a crank 231, preferably mounted to pivot on the control wheel.
  • the crank 231 has a maneuvering position in which it is perpendicular to the plane of the control wheel 23 (see figure 2 ) and a retracted position in which the crank is parallel to the steering wheel. In the latter position, the crank 231 does not risk injuring a user when the mast descends by gravity.
  • the figures 5 to 7 illustrate more precisely the reversible locking means of the control shaft 22.
  • this reversible locking means is designed to lock the control shaft in rotation in the absence of action by a user.
  • the reversible locking means 50 is a manually actuated lever brake, and arranged to lock the control shaft in rotation.
  • a crown 25 fixed to the control shaft 22 is advantageously provided to have a greater friction surface with the brake.
  • the lever also comprises an adjustable limit stop 57 preventing the user from releasing the brake too much.
  • the user must actuate the brake by releasing it to unlock the control shaft and be able to turn the control wheel to erect the telescopic mast. If he releases the brake, the mast cannot descend, ensuring its safety. Tightening is thus obtained in the absence of any manipulation, by coupling the arm to an elastic return means of the spring type. Thus, in the absence of any counter-spring force, the brake prevents the drive shaft from rotating.
  • control shaft 22 is in two removable parts, one 22a integral with the control wheel 23, and the other 22b remaining in direct or indirect engagement (via the reduction system) with the pinion. This allows the flywheel to be removed and the brake to be serviced.
  • control shaft passes through the flywheel and has one end provided with an end piece 232 for fixing to a complementary end piece carried by a portable electric screwdriver. It is thus possible to actuate the lifting mechanism by a screwdriver, which limits the efforts to be provided.
  • This embodiment is particularly advantageous because it allows high transmission power so that neither a user in manual mode, nor the screwdriver tires, while ensuring a mast climbing speed greater than the speeds generally observed with lifting plates. state of the art.
  • the power was measured using a Kern dynamometer, model HCB version 3.1 7/2006.
  • control shaft 22 (or the part 22b) is fixed to the control wheel 23 by means of a one-way bearing 60 (see figure 2 ).
  • control shaft 22 (or part 22a) is driven with a portable electric screwdriver, the control shaft 22 can turn at high speed in the upward direction of the mast without having to yesteryear. train the steering wheel.
  • Screwdrivers are very common on construction sites and it is very easy to recharge them.
  • the screwdriver is located in front of the user, which gives him an optimal position for both controlling the brake and the screwdriver.
  • the figure 8 illustrates an embodiment of a lifting mechanism according to the invention, further comprising a constraining means 132 of the rack 13 against the pinion 21.
  • this means of constraint is constituted by a screw.
  • Such a mechanism is useful for adjusting the lifting mechanism and ensuring that the rack is properly engaged against the pinion 21.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Types And Forms Of Lifts (AREA)
  • Braking Arrangements (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
EP15784085.1A 2014-11-06 2015-10-02 Mécanisme de levage pour un appareil de levage de plaques de construction, appareil de levage comportant un tel mécanisme, procédé de levage à l'aide d'un tel appareil Active EP3215689B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15784085T PL3215689T3 (pl) 2014-11-06 2015-10-02 Mechanizm podnoszący urządzenia do podnoszenia płyt konstrukcyjnych, urządzenie podnoszące posiadające taki mechanizm, sposób podnoszenia przy użyciu takiego urządzenia

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1460718A FR3028278B1 (fr) 2014-11-06 2014-11-06 Mecanisme de levage pour un appareil de levage de plaques de construction, appareil de levage comportant un tel mecanisme, procede de levage a l’aide d’un tel appareil
PCT/FR2015/052659 WO2016071589A1 (fr) 2014-11-06 2015-10-02 Mécanisme de levage pour un appareil de levage de plaques de construction, appareil de levage comportant un tel mécanisme, procédé de levage à l'aide d'un tel appareil

Publications (2)

Publication Number Publication Date
EP3215689A1 EP3215689A1 (fr) 2017-09-13
EP3215689B1 true EP3215689B1 (fr) 2021-06-23

Family

ID=52345368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15784085.1A Active EP3215689B1 (fr) 2014-11-06 2015-10-02 Mécanisme de levage pour un appareil de levage de plaques de construction, appareil de levage comportant un tel mécanisme, procédé de levage à l'aide d'un tel appareil

Country Status (14)

Country Link
US (1) US20170334691A1 (da)
EP (1) EP3215689B1 (da)
JP (1) JP2018503576A (da)
CN (1) CN107002423B (da)
AU (1) AU2015341616A1 (da)
CA (1) CA2966959A1 (da)
DK (1) DK3215689T3 (da)
ES (1) ES2890624T3 (da)
FR (1) FR3028278B1 (da)
IL (1) IL252079A0 (da)
LT (1) LT3215689T (da)
PL (1) PL3215689T3 (da)
SG (1) SG11201703654WA (da)
WO (1) WO2016071589A1 (da)

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CN109179271B (zh) * 2018-09-13 2024-02-02 平湖普英特高层设备有限公司 一种大角度斜爬式擦窗机
CN113445764A (zh) * 2020-03-26 2021-09-28 山西四建集团有限公司 一种民用建筑用放线辅助装置
CN111637279B (zh) * 2020-05-23 2021-09-14 台州清能环保有限公司 一种方便埋设的管道提升装置
CN111675145B (zh) * 2020-05-28 2021-11-19 浙江植物源新材料股份有限公司 一种基于新材料加工自动化粘贴设备的平移式上料滑台
KR102202449B1 (ko) * 2020-08-13 2021-01-13 우재형 안전사고 방지를 위한 고소작업대
CN112065072A (zh) * 2020-09-24 2020-12-11 大元建业集团股份有限公司 一种装配式墙板调运安装机
CN112225105B (zh) * 2020-11-16 2022-03-18 盐城工业职业技术学院 汽车轮胎维修千斤顶
CN113216575B (zh) * 2021-05-17 2022-10-28 九江职业技术学院 一种建筑室内扣板安装机构与方法
CN113798549A (zh) * 2021-11-01 2021-12-17 南京快轮智能科技有限公司 一种滑板车底板装配孔加工设备
CN115598439B (zh) * 2022-09-28 2023-06-23 广州电力工程监理有限公司 一种便携式电力检测设备及检测方法
CN118164401B (zh) * 2024-04-24 2024-09-17 中铁二十局集团第四工程有限公司 一种建筑钢构安装用辅助抬升装置

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Also Published As

Publication number Publication date
CN107002423B (zh) 2020-07-28
LT3215689T (lt) 2021-10-11
EP3215689A1 (fr) 2017-09-13
US20170334691A1 (en) 2017-11-23
CN107002423A (zh) 2017-08-01
WO2016071589A1 (fr) 2016-05-12
AU2015341616A1 (en) 2017-05-25
SG11201703654WA (en) 2017-06-29
JP2018503576A (ja) 2018-02-08
ES2890624T3 (es) 2022-01-20
DK3215689T3 (da) 2021-09-20
FR3028278A1 (fr) 2016-05-13
PL3215689T3 (pl) 2021-12-13
FR3028278B1 (fr) 2017-04-28
IL252079A0 (en) 2017-07-31
CA2966959A1 (fr) 2016-05-12

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