EP0117862A2 - Hebevorrichtung, insbesondere Arbeitsplattform - Google Patents

Hebevorrichtung, insbesondere Arbeitsplattform Download PDF

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Publication number
EP0117862A2
EP0117862A2 EP84870025A EP84870025A EP0117862A2 EP 0117862 A2 EP0117862 A2 EP 0117862A2 EP 84870025 A EP84870025 A EP 84870025A EP 84870025 A EP84870025 A EP 84870025A EP 0117862 A2 EP0117862 A2 EP 0117862A2
Authority
EP
European Patent Office
Prior art keywords
nacelle
lifting
machine
motor
lifting device
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
EP84870025A
Other languages
English (en)
French (fr)
Other versions
EP0117862A3 (en
EP0117862B1 (de
Inventor
Roger Husson
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.)
NOVITEC sc
Original Assignee
NOVITEC sc
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
Priority claimed from BE0/211502A external-priority patent/BE897720R/fr
Application filed by NOVITEC sc filed Critical NOVITEC sc
Priority to AT84870025T priority Critical patent/ATE39467T1/de
Publication of EP0117862A2 publication Critical patent/EP0117862A2/de
Publication of EP0117862A3 publication Critical patent/EP0117862A3/fr
Application granted granted Critical
Publication of EP0117862B1 publication Critical patent/EP0117862B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
    • B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7415—Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees

Definitions

  • the present invention relates to a lifting machine in particular a generally rectangular, motorized, suspended nacelle which is called upon to move from bottom to top and vice versa along a facade of a building or other edifice.
  • the lifting device or nacelle according to the present invention is substantially simplified; it is in fact only provided with a single electric motor or other fuel such as gasoline, fuel oil.
  • this lifting machine in particular a nacelle is characterized in that on the one hand, in its longitudinal center are aligned, a motor which can be coupled by a first transmission shaft to a generally hydraulic reversing coupler, for example controlled by a pneumatic cylinder making it possible to reverse the direction of the nacelle relative to the motor which always turns in the same direction, this coupler is coupled by a second transmission shaft to a reduction gear, possibly reduction gear, intended to return at right angles the motor movement, and second transmission shaft interposed, between the coupler and the reduction gear, a flywheel integral with said shaft which can be slowed down and blocked by a jaw braking device taking on the flywheel whose opening is not obtained only by the pressure on a control means, and reducer, bevel gear, which, on the other hand, causes, perpendicular to the transverse alignment, on both sides, a tr third gear shaft at the ends of which is placed a lifting nut on which a chain takes.
  • a motor which can be coupled by a first transmission shaft to
  • provision may be made for using a motor with a double direction of rotation, which may be the case for a single-phase electric motor and which will make the reversing coupler useless, this latter function being provided by the motor. .
  • this type of motor has a magnetic brake which will operate in the event of a power failure.
  • link chains If it was mainly a question of link chains, it should however be understood that it is also possible to use roller chains, chains comprising plates and pins as well as chains of the Galle type or bicycle chains or still marine chains, link chains. It is always also possible, to meet very strict safety regulations, to double on each side of the nacelle, the suspension system of the nacelle.
  • the nacelle be immobilized when it is overloaded and that beyond a determined weight
  • the motor collapsing the floating chassis, tilts and the counterweight in balance will rise and come directly or through an element resting on the balance beam on the counterweight side and cut off the operation of the engine and therefore the stop of the nacelle.
  • a frame or an arm floating freely a few centimeters under the nacelle and frame or arm which, when it encounters an obstacle, for example an open window, protruding from the facade of the building on the descending course of the nacelle, will force this frame or arm to (get) closer to the nacelle, which will cause via a trigger, stopping the nacelle, by stopping the engine, which triggers the braking system.
  • the motor is a simple direction of rotation, it will serve both to drive the ascent and descent of the nacelle; the jaw braking device is biased by a spring which tends to close the jaw unless the spring is compressed, which it is intended to be able to do, for example by means of a pneumatic cylinder, so as to block the assembly in the event of a breakdown, by an exhaust system 1 the compressed air.
  • the steering wheel may include a second emergency braking device, possibly also with a jaw, which intervenes as soon as the steering wheel is driven at a speed greater than a desired speed, preferably the steering wheel comprising a part which, according to the principle of the counterweight, will emerge from the circle formed by the steering wheel and release the second braking device.
  • a second emergency braking device possibly also with a jaw, which intervenes as soon as the steering wheel is driven at a speed greater than a desired speed, preferably the steering wheel comprising a part which, according to the principle of the counterweight, will emerge from the circle formed by the steering wheel and release the second braking device.
  • the lifting nut which completes the third transmission arm and nut on which the chain takes can be placed in a housing or box such that the chain cannot disengage from the toothed nut by any slack in the chain; moreover, if this nut is not centered on the transverse lateral side of one or the nacelle, two directional nuts are provided, toothed or not, superimposed and placed in the transverse central alignment of the nacelle, one being higher and the other lower than the drive nut; these two nuts can also be provided in the same housing or box as the lifting nut, and possibly driven relative to the transmission axis by a chain and sprockets system.
  • the push-button control panel (17) (18, 18 ') is connected on the one hand to a duct (19) to the compressor (15) and on the other hand, by another duct (20) going to the reversing coupler, a common conduit (21) connecting the two conduits (19 and 20) to the panel (17). Furthermore, the compressor (15) is also connected by a double duct (22, 22a, 22b) respectively terminated by valves (23, 24) placed above and below the nacelle on the passage of the chain (14 ).
  • valves (23, 24) (possibly on the other side of the conduits (22 ', 22'a, 22'b) of the valves (23', 24 ') relative to the chain (14') / will be opened by an upper pawl (25) (possibly (25 ') on the other side) and a lower pawl (26) (possibly (26') on the other side); these pawls (25, 26) (and possibly (25 ', 26')) are attached one or more (25, 25 ') near the upper end of the chain (s) (14, 14') near their attachment point and the other others (26, 26 ') and at the lower end of the chain (s) (14, 14') near where the chains rest on
  • These pawls (25, 26) and possibly (25 ', 26') are intended to open the valves (23, 24) and possibly (23 ', 24') which has the effect of canceling the effect of the compressor ( 15) and release the spring (16)
  • boxes or housings (11, 11 ') are in two parts (IIa, llb), parts joined to each other by screws (27).
  • an emergency braking device (28) which operates automatically and which will intervene if for any reason during the descent of the nacelle (1) (and possibly the ascent although this is less important) the speed had to exceed a determined and desired speed and appreciably higher than the slow speed at which normally the gondola (1) will be driven by the motor (2).
  • This emergency braking device (28) will act as the braking device (8) on the steering wheel (7) and is also a jaw brake (29, 30) closing under the action of a spring (not visible in Figure 6) but brake which in principle is kept open by a wedge or prop (31).
  • this wedge or prop (31) is however ejectable and there is provided for this purpose a trigger (32), moving part placed at the perimeter of the steering wheel (7) which when the speed of said flywheel exceeds a certain speed tends to move away from the outer circle of the flywheel (9) and will therefore strike the shim or prop (31) and eject it so that the brake shoes (29, 30) come to brake, then lock the flywheel (7 ) which causes the descent of the nacelle (1) to stop.
  • the operation of the nacelle is very simple after starting the engine (2); to raise it, the finger (18) is pushed, which releases the flywheel (7) from the jaw brake (8), the compressor, pneumatic cylinder (15) driving the spring (16) and the control another pneumatic cylinder (not shown) of the reversing coupler (4), which allows the motor (2) to rotate the various transmission arms (3, 5, 10, 10 '), the latter ( 10, 10 ') causing the nuts (12, 12') to rotate which will mesh with the chains (14, 14 ') which will force the ascent of the nacelle.
  • the brake shoe (8) closes and the coupler (4) is put in neutral and the nacelle will be braked then stopped in its rise.
  • the command of the reversing coupler (4) also requested by the button (18 ') allows the motor (2) to drive in rotation (opposite to what is described above) at a desired speed, the different arms transmission (3, 5, 10, 10 '), the latter causing the rotation of the lifting nuts (12, 12') which will mesh on the chains (14, 14 ') which will cause the nacelle to descend . More particularly for the descent of the nacelle, it is the reversing coupler (4) which will limit, by reducing and braking, the speed of rotation of the motor and therefore the speed of descent (or ascent). of the nacelle (1). Each time that the pressure on the button (18 ') is released, the jaw brake (8) closes and the descent of the nacelle is braked, then stopped.
  • the descent of the nacelle (1) should be done at a speed exceeding the admissible limits (or even the ascent although this is practically not possible because in uphill, the weight and the load of the nacelle of course not intervene), this will cause the lifting nuts (12, 12 '), the drive shafts (10, 10', 5, 3) to rotate at higher speeds than those allowed and also therefore the flywheel (7) which, from a determined speed of rotation, will request the trigger (32) which will eject the shim or prop (31) and therefore cause the emergency braking device (28) to operate ).
  • the hydraulic reversing coupler (4) of the nacelle can be provided with a bypass system (bypass) allowing a limiting adjustment relative to the maximum permitted load; this system can also apply to any other lifting device where it is also essential to provide this adaptation.
  • the pneumatic cylinders for releasing the braking device (8) as for controlling the reversing coupler (4) can be either pressure or decompression.
  • FIG. 2 there is also shown, by (33, 33 ′) (FIG. 2) two bearings by which the floating chassis (34), carrying the motor (2) and the other elements (3, 4, 7, 8, 6), is held to the structure of the nacelle (not shown).
  • the floating frame (34) is capable of descending on the side where it is free, that is to say on the side opposite the bearings (33, 33 '), according to the boom (35), is normally maintained horizontally by a balance system composed of a beam (36), held at a point (37) directly or via an arm (38) to the structure of the nacelle (not shown).
  • a balance system composed of a beam (36), held at a point (37) directly or via an arm (38) to the structure of the nacelle (not shown).
  • One side of the beam (36 ') is connected to the floating frame (34) and on the other side it has a counterweight (40). The value of this counterweight (40) is determined by the load which it is desired to admit on the nacelle in operation.
  • This switch (44) is connected to a horn control (not shown) which, in the event of a stop, also informs, by switching it on, that it is a stop due to an overload.
  • FIG. 5 there is also shown a complementary chain control device (14 ') which is not directly driven by the transmission arm (10') but by a complementary system which includes a nut (50 ) in addition, a complementary chain (5.1) relaying the movement of this nut (50) to the other three nuts (13a, 12, 13b) so as to avoid slack in the chain (14 ').
  • the invention is not limited to the embodiments described and shown and it would of course be possible to provide different variants, in particular as regards the balance device, for example providing that one of the plagues acts directly on a switch, provide that the weight can be moved on a beam fitted with a scale determining different admissible loads.
  • the frame placed under the nacelle could be of another shape, mounted differently under the nacelle and act directly on a switch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
EP19840870025 1983-02-24 1984-02-20 Hebevorrichtung, insbesondere Arbeitsplattform Expired EP0117862B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84870025T ATE39467T1 (de) 1983-02-24 1984-02-20 Hebevorrichtung, insbesondere arbeitsplattform.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE896004 1983-02-24
BE896004 1983-02-24
BE897720 1983-09-09
BE0/211502A BE897720R (fr) 1983-09-09 1983-09-09 Engin de levage en particulier nacelle

Publications (3)

Publication Number Publication Date
EP0117862A2 true EP0117862A2 (de) 1984-09-05
EP0117862A3 EP0117862A3 (en) 1985-10-09
EP0117862B1 EP0117862B1 (de) 1988-12-28

Family

ID=25660247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840870025 Expired EP0117862B1 (de) 1983-02-24 1984-02-20 Hebevorrichtung, insbesondere Arbeitsplattform

Country Status (2)

Country Link
EP (1) EP0117862B1 (de)
DE (1) DE3475772D1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4869341A (en) * 1987-09-21 1989-09-26 Fitzgerald Frederick P Automatic control of work platforms
EP0876987A1 (de) * 1997-05-06 1998-11-11 Kyung-Joo Kim Fassadenaufzug
NL1008092C2 (nl) * 1998-01-22 1999-07-26 Ltf Transporttechniek Bv Goederenlift.
NL1010908C2 (nl) * 1998-12-28 2000-06-30 Altrex Bv Liftkooigeleidingsstelsel.
WO2009082412A1 (en) * 2007-12-24 2009-07-02 Franklin Samuel H Elevator climbing system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102605941A (zh) * 2012-03-23 2012-07-25 河北杭萧钢构有限公司 围护板吊装平台

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1615182A (en) * 1926-09-07 1927-01-18 James L Thorne Painter's scaffold
US2649280A (en) * 1950-05-31 1953-08-18 Steel Products Eng Co Chain hoist mechanism
US3237718A (en) * 1964-05-13 1966-03-01 Ederer Corp Two-sided suspension system for staging
DE2339669C3 (de) * 1973-08-04 1980-06-19 Walter 2000 Hamburg Boczek Hubwinde fur Kernreaktoren
US4177973A (en) * 1978-03-06 1979-12-11 Ederer Incorporated Cable drum safety brake
EP0009058B1 (de) * 1978-09-25 1983-02-16 Plumettaz Sa Aufhängevorrichtung für eine Bühne zur Instandhaltung von Fassaden

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4869341A (en) * 1987-09-21 1989-09-26 Fitzgerald Frederick P Automatic control of work platforms
EP0876987A1 (de) * 1997-05-06 1998-11-11 Kyung-Joo Kim Fassadenaufzug
NL1008092C2 (nl) * 1998-01-22 1999-07-26 Ltf Transporttechniek Bv Goederenlift.
NL1010908C2 (nl) * 1998-12-28 2000-06-30 Altrex Bv Liftkooigeleidingsstelsel.
EP1016616A1 (de) * 1998-12-28 2000-07-05 Altrex B.V. Führungsystem für Aufzugskabine
US7975807B2 (en) 2004-01-20 2011-07-12 Franklin Samuel H Elevator climbing system
WO2009082412A1 (en) * 2007-12-24 2009-07-02 Franklin Samuel H Elevator climbing system

Also Published As

Publication number Publication date
DE3475772D1 (en) 1989-02-02
EP0117862A3 (en) 1985-10-09
EP0117862B1 (de) 1988-12-28

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