EP0117862B1 - Hebevorrichtung, insbesondere Arbeitsplattform - Google Patents
Hebevorrichtung, insbesondere Arbeitsplattform Download PDFInfo
- Publication number
- EP0117862B1 EP0117862B1 EP19840870025 EP84870025A EP0117862B1 EP 0117862 B1 EP0117862 B1 EP 0117862B1 EP 19840870025 EP19840870025 EP 19840870025 EP 84870025 A EP84870025 A EP 84870025A EP 0117862 B1 EP0117862 B1 EP 0117862B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- appliance
- nacelle
- flywheel
- motor
- lifting
- 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.)
- Expired
Links
Images
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 significantly simplified compared to existing devices and safer than the latter, because, on the one hand, it is in fact provided with only one motor, electric or fuel like gasoline, fuel oil, and, on the other hand, it moves along chains, fixed by one of their ends to the top of the aforesaid facade, which makes it possible to eliminate the winches which are the least reliable elements of said type of gear.
- 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 it 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 carrying 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, the opening of which does not is obtained only by pressing on a control means, and reducing, angle gear, which, on the other hand, causes, perpendicular to the transverse alignment, on both sides, a third drive 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
- 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 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 chains. by bike or even marine 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 this beyond a determined weight
- an obstacle for example an open window
- the motor is one-way 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 all in the event of a breakdown, by a compressed air exhaust system.
- the steering wheel may comprise 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, the steering wheel preferably comprising a part which according to the principle of the counterweight , will disengage from the circle formed by the steering wheel and release the second braking device.
- the lifting nut which ends 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 the nacelle, one or 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 driving 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 control panel (17) with push buttons (18, 18 ') is connected, on the one hand, by a conduit (19) to the compressor (15) and, on the other hand, by another conduit (20) , to the reversing coupler (4), 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) to valves (23, 24) placed above and below the nacelle on the passage of the chain (14) .
- valves (23, 24) and possibly, on the other side, conduits (22 ', 22'a, 22'b) cooperating with valves (23', 24 ') placed on the passage of 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 optionally (25 ', 26') are attached one (25) or some (25, 25 ') near the upper end of the chain (s) (14, 14') near their attachment point and the other (26) or the others (26, 26 ') and at the lower end of the chain or chains (14, 14') near the place where the chains rest on the ground.
- boxes or housings (11, 11 ') are in two parts (11a, 11b), 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 7) 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); for the raise, push the button (18) with your finger, which releases the flywheel (7) from the jaw brake (8), the compressor, pneumatic cylinder (15) driving in the spring (16) and the control of another pneumatic cylinder (not shown) of the reversing coupler (4), which allows the motor (2) to rotate the various transmission shafts (3, 5, 10, 10 '), the latter (10, 10 ') causing the nuts (12, 12') to rotate which will mesh with the chains (14, 14 '), which forces the nacelle to rise.
- 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 operation 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 various transmission shafts (3, 5, 10, 10 '), the latter driving the rotation of the lifting nuts (12, 12') which will mesh on the chains (14, 14 '), which will lower the Platform. 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 the 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, 5, 7, 8, 6), is held to the structure of the nacelle (not shown).
- the floating chassis (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 arrow (35), is normally maintained horizontally by a balance system composed of a beam (36), held at a point (37) directly or by means of 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 by means of an arm (38) to the structure of the nacelle (not shown).
- One side of the beam (39) 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 command from an audible warning device (not shown) which, in the event of a stop, also informs, by switching on, that it is a stop due to an overload.
- FIG. 4 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 ) additional, a complementary chain (51) relaying the movement of this nut (50) to the other three nuts (13a, 12, 13b) so as to avoid slack in the chain (14 ').
- a complementary chain control device 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 provide that one of the beams acts directly on a switch, provide that the weight can be moved on a beam fitted with a scale determining different permissible 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)
Claims (15)
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 | ||
BE0/211502A BE897720R (fr) | 1983-09-09 | 1983-09-09 | Engin de levage en particulier nacelle |
BE897720 | 1983-09-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0117862A2 EP0117862A2 (de) | 1984-09-05 |
EP0117862A3 EP0117862A3 (en) | 1985-10-09 |
EP0117862B1 true 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 (1)
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 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4869341A (en) * | 1987-09-21 | 1989-09-26 | Fitzgerald Frederick P | Automatic control of work platforms |
KR100251014B1 (ko) * | 1997-05-06 | 2000-04-15 | 김경주 | 승강기 |
NL1008092C2 (nl) * | 1998-01-22 | 1999-07-26 | Ltf Transporttechniek Bv | Goederenlift. |
NL1010908C2 (nl) * | 1998-12-28 | 2000-06-30 | Altrex Bv | Liftkooigeleidingsstelsel. |
US7975807B2 (en) | 2004-01-20 | 2011-07-12 | Franklin Samuel H | Elevator climbing system |
Family Cites Families (6)
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 |
-
1984
- 1984-02-20 DE DE8484870025T patent/DE3475772D1/de not_active Expired
- 1984-02-20 EP EP19840870025 patent/EP0117862B1/de not_active Expired
Cited By (1)
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 |
Also Published As
Publication number | Publication date |
---|---|
DE3475772D1 (en) | 1989-02-02 |
EP0117862A2 (de) | 1984-09-05 |
EP0117862A3 (en) | 1985-10-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0565605B1 (de) | Hebebühne | |
EP0627527B1 (de) | Anlage zum Tragen von Strassenmobiliar, senkbar mit elektronischen Antriebsmitteln | |
EP1174381B1 (de) | Aufzugsanlage mit verminderter Höhe des Schachtkopfes | |
EP0117862B1 (de) | Hebevorrichtung, insbesondere Arbeitsplattform | |
EP0015857B1 (de) | Vorrichtung zum motorisierten Öffnen und Verschliessen eines Portals | |
EP1148022A1 (de) | Rahmen für Hubgondel und Scherenhubgondel mit einem solchen Rahmen | |
EP1351878A1 (de) | Notbrems- und stossdämpfungsvorrichtung für einen aufzug oder eine aufgehängte last | |
EP4111437A1 (de) | Mobiles signallicht zur verwendung auf einer baustelle | |
FR2810655A1 (fr) | Mecanisme a traction variable pour un dispositif de securite de survitesse a organe de commande rotatif | |
FR2795060A1 (fr) | Dispositif de securite pour technicien ascensoriste permettant d'eviter l'ecrasement de celui-ci entre la cabine et le plafond de la cage | |
FR2710361A1 (fr) | Plateforme auto-élévatrice. | |
EP2150482B1 (de) | Rack mit mehreren wellen und zahnradantriebssystem | |
BE896004A (fr) | Engin de levage en particulier nacelle | |
EP1178505A1 (de) | Betätigungseinrichtung mit einer Zugkette für elektrische Hochspannungsschalter | |
FR2645135A1 (fr) | Procede et installation de deblocage d'une cabine d'ascenseur ou de monte-charge immobilisee accidentellement entre deux paliers | |
FR2812759A1 (fr) | Mecanisme de manoeuvre a chaine muni d'un dispositif de demarrage, pour un appareillage electrique de coupure haute tension | |
WO2001083353A1 (fr) | Limiteur de vitesse pour cabine d'ascenseur | |
FR2511995A1 (fr) | Dispositif de securite pour engin de levage et engin de levage pourvu de ce dispositif | |
FR2566379A1 (fr) | Engin de levage mobile, notamment portuaire | |
CH336962A (fr) | Installation de commande de vérins assurant en conjugaison le déplacement progressif d'une pièce, notamment d'un coffrage glissant | |
FR2970718A1 (fr) | Portique a levage elastique | |
FR3028255A1 (fr) | Dispositif de levage electromecanique debrayable d'un elevateur pour personnes a mobilite reduite | |
FR2970719A1 (fr) | Portique securite | |
BE559061A (de) | ||
FR2539178A1 (fr) | Porte a commande par chaine a double securite |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT CH DE FR GB IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19860402 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOVITEC SC |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HUSSON, ROGER |
|
17Q | First examination report despatched |
Effective date: 19870209 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE FR GB IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19881228 Ref country code: NL Effective date: 19881228 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19881228 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19881228 Ref country code: AT Effective date: 19881228 |
|
REF | Corresponds to: |
Ref document number: 39467 Country of ref document: AT Date of ref document: 19890115 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3475772 Country of ref document: DE Date of ref document: 19890202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19890228 Ref country code: LI Effective date: 19890228 Ref country code: CH Effective date: 19890228 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19891027 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19891101 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: AUV Free format text: LE BREVET SI-DESSUS EST TOMBE EN DECHEANCE FAUTE DE PAIEMENT, DE LA 6E ANNUITE. |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
26N | No opposition filed |