EP4255839A1 - Procédé de transformation d'un ascenseur hydraulique en un ascenseur électrique - Google Patents

Procédé de transformation d'un ascenseur hydraulique en un ascenseur électrique

Info

Publication number
EP4255839A1
EP4255839A1 EP21701164.2A EP21701164A EP4255839A1 EP 4255839 A1 EP4255839 A1 EP 4255839A1 EP 21701164 A EP21701164 A EP 21701164A EP 4255839 A1 EP4255839 A1 EP 4255839A1
Authority
EP
European Patent Office
Prior art keywords
car
guide rails
pair
crossbar
plunger
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.)
Pending
Application number
EP21701164.2A
Other languages
German (de)
English (en)
Inventor
Stavros STAVROPOULOS
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.)
Doppler SA
Stavropoulos Stavros
Original Assignee
Doppler 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 Doppler SA filed Critical Doppler SA
Publication of EP4255839A1 publication Critical patent/EP4255839A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • B66B19/007—Mining-hoist operation method for modernisation of elevators

Definitions

  • the present invention applies to the field of systems suitable for transporting one or more persons from one zone of a building to another area of the same building placed at a different height.
  • the systems of this type are usually referred to as people lifting systems or, more generally, "lifts” or “elevators”.
  • Lifts generally comprise one or more cars (i.e., structures for housing people) which can be translated vertically by means of ropes made to run by means of hydrodynamic linear actuators or electric winches.
  • rope does not necessarily mean a rope itself, but, in general, a very long and extremely flexible element.
  • the term “rope” therefore also comprises, for example, a belt.
  • the present invention relates to a method for transforming a lift actuated by a hydrodynamic linear actuator, commonly referred to as “hydraulic lift”, into a lift actuated by an electric winch, commonly referred to as “traction lift”.
  • lifts generally comprise a car which can be translated inside a tunnel arranged vertically and commonly referred to as a "shaft".
  • the car is provided with a supporting structure, known as a "car frame", enclosing a portion of space accessible through a door.
  • the car frame is tied to a pair of guide rails housed in the shaft.
  • the guide rails are oriented vertically and bind the car frame, and the car therewith, to move vertically inside the shaft.
  • the latter comprises a door at each of the floors (of the building in which the lift is installed) at which the car can stop (i.e. , at each of the floors "served” by the car).
  • the car door commonly referred to as “car side door”
  • the door of the shaft at a floor commonly referred to as “floor side door”
  • the shaft does not end at the first and top floor served by the car. More precisely, the shaft extends both above the floor at the highest height to form a cavity commonly referred to as “headroom”, and below the floor at the lowest height forming a cavity commonly referred to as "pit free space”.
  • the header is the part of the shaft between the highest floor served by the car and the ceiling of the shaft and the pit is the part of the shaft comprised between the level of the lowest floor served by the car and the bottom of the shaft (for this reason also named "pit bottom").
  • the car In hydraulic lifts, the car is moved by means of a plurality of ropes, each of which is connected to the car frame at a first end thereof and to the pit bottom at its second end thereof opposite to said first end.
  • the ropes starting from the car frame, rise vertically until they reach a return element, usually consisting of a pulley rotatable about a horizontally arranged central axis.
  • the ropes are partially wound on said pulley and then continue vertically downwards to the pit bottom.
  • the car is moved by a hydrodynamic linear actuator comprising a cylinder integrally connected to the pit bottom at a first end thereof and a plunger extended from said cylinder starting from a second end thereof opposite to said first end of the cylinder.
  • the plunger and cylinder are arranged vertically.
  • the plunger runs vertically relative to the cylinder by means of a mineral oil pumping system in the cylinder.
  • the return pulley of the ropes is bound to the free end of the plunger (i.e., the one furthest from the cylinder) so that it is free to rotate around a horizontal pin.
  • a translation of the plunger determines a translation of the pulley inside the shaft, which causes a running of the ropes and consequently a movement of the car.
  • the car In traction lifts, the car is moved by means of a plurality of ropes, each of which is connected to the car frame at a first end thereof and to a counterweight at its second end thereof opposite to said first end thereof.
  • the counterweight like the car, runs inside the shaft and is bound to a second pair of guide rails preferably placed at the wall of the shaft opposite to the flat side doors.
  • the counterweight guide rails like the car guide rails, are vertically oriented and bind the counterweight to translate vertically within the shaft.
  • the ropes, starting from the car frame rise vertically until they reach an electric winch usually accommodated in the header of the shaft.
  • the ropes are partially wound on said winch and then continue vertically downwards to the counterweight.
  • the winch makes the ropes run, resulting in a translation of the car.
  • Both the hydraulic and traction lifts are provided with safety devices which intervene whenever the speed of the car (when in descending motion) exceeds a limit value. Said safety devices slow down the car until its translation is stopped, if necessary.
  • the safety devices usually comprise a valve (called “shut-off valve") which reduces the oil flow out of the linear actuator cylinder until possibly to zero. Said valve is also known as a “flow limiting valve”.
  • the safety devices comprise a "brake” (safety gear) and a “governor” (also called an “overspeed governor”), instead.
  • the brake is usually connected to the car frame and comprises at least one pair of shoes which can be clamped onto the car guide rails.
  • the clamping of the shoes prevents or stops a translation of the car, integrally binding the car frame to the guide rails to which the brake is clamped.
  • the brake is operated by the governor which comprises a rope the ends of which are mutually connected to form a loop extending over the entire length of the shaft.
  • the governor rope is connected to the car and is connected to a brake lever arm. Whenever the speed of the car (when in descending motion) exceeds a limit value, the governor moves the lever arm of the brake by operating the brake, to slow down the car until it is immobilized.
  • hydraulic lifts are simpler (and consequently more cost-effective) to install than traction lifts, they are relatively slow and have high power consumption in the inrush phase. Last but not least, the oils used for the operation of hydraulic lifts are highly polluting and tend to overheat whenever the car travels at a high frequency.
  • traction lifts although they are more expensive to purchase than hydraulic lifts, consume less electricity and require less maintenance. They are also relatively fast and do not require polluting oils for their operation.
  • the purpose of the present invention is to overcome the aforesaid problems by indicating a method for transforming a hydraulic lift into a traction lift.
  • top panel a ceiling commonly referred to as the "top panel.”
  • the shape of the car frame is such to be commonly referred to as "L- shaped” and the lift is referred to as “cantilevered”;
  • a hydrodynamic linear actuator comprising:
  • a cylinder including a first end and a second end opposite to said first end thereof, said cylinder being integrally connected to said bottom (of the shaft) at said first end thereof, and extending vertically in said shaft starting from said bottom;
  • a plunger comprising a first end and a second end opposite to said first end thereof, said plunger being accommodated in said cylinder at a stretch of said plunger starting from said first end of said plunger, said plunger extending vertically into said shaft starting from said second end of said cylinder, said plunger being vertically translatable in said shaft relative to said cylinder so that a translation of said plunger relative to said cylinder determines either an increase or a decrease of the distance between said second end of said plunger and said second end of said cylinder;
  • - pumping means suitable of either introducing or drawing working fluid (preferably mineral oil) into or from a hermetically sealed chamber included in said cylinder and comprised between said first end of said cylinder and said first end of said plunger so that: an introduction of said working fluid into said hermetically sealed chamber determines a translation of said plunger relative to said cylinder to make the distance increase between said second end of said plunger and said second end of said cylinder and
  • a drawing of said working fluid from said hermetically sealed chamber determines a translation of said plunger relative to said cylinder such as to make the distance reduce between said second end of said plunger and said second end of said cylinder;
  • control means of said hydrodynamic linear actuator such control means being capable of commanding both an introduction of said working fluid into said hermetically sealed chamber by said pumping means and a drawing of said working fluid from said hermetically sealed chamber by said pumping means, wherein, according to the invention, the method comprises the following steps: a) connecting lifting means (such as one or more chain hoists) to said ceiling (of the shaft) inside said shaft, said lifting means being connectable to an object to be lifted, said lifting means being suitable for moving an object to be lifted, when connected thereto, moving either towards said ceiling (of the shaft) or away therefrom; b) preparing a first crossbar for said traction lift:
  • lifting means such as one or more chain hoists
  • the method of the invention makes it possible to transform a hydraulic lift into a traction lift without having to use scaffolding to install the counterweight guide rails, but using the lift car as a freight lift and exiting the car through the top panel. Furthermore, since the counterweight guide rails are connected to the car guide rails instead of to the walls of the shaft, there is no need to drill through these walls in any way.
  • step a in said second position so that:
  • such lifting means may be connected to said ceiling (of the shaft) by a person previously accommodated in said housing after said person has exited from said housing and climbed onto said top panel;
  • said first crossbar previously accommodated in said housing, may be arranged in said shaft, connected to said lifting means, arranged in said free header space, integrally connected to said first pair of guide rails and/or to said walls delimiting at least partially said shaft and disconnected from said lifting means, by said person who climbed onto said top panel;
  • said lifting means may be disconnected from said ceiling (of the shaft) and connected to said first crossbar by said person who climbed onto said top panel.
  • the aforesaid operations can be carried out by exiting the lift car through the top panel without the use of scaffolding.
  • a supporting crossbar comprising a first end and a second end opposite to said first end of said car frame is integrally connected to said pair of uprights, above said car frame, respectively at said ends of said supporting crossbar, to prevent undesired deformation of the car frame during the period of time between the removal of the crossbar of the car frame and the connection of said second crossbar.
  • step p) said return element is removed from said plunger before the removal of said hydrodynamic linear actuator, before step a) said car being arranged in said second position so that, in step p), said return element can be removed from said plunger by a person previously accommodated in said housing after said person has exited from said housing and climbed onto the top panel.
  • the aforesaid operation can be carried out by exiting the lift car through the top panel without the use of scaffolding.
  • step q1 is performed before step q).
  • step e) the second crossbar is integrally connected to a return element, in step r), said counterweight being integrally connected to a return element, in step s), said traction rope:
  • FIG. 1 is a diagrammatic view of a hydraulic lift according to the prior art
  • FIG. 1 diagrammatically show the respective steps of a method, object of invention, to transform the lift in figure 1 into a traction lift.
  • Figure 1 shows a hydraulic lift 1 , according to the prior art, installed in an exemplary two-floor building (i.e., comprising a "ground floor", a "first floor” and a “second floor”).
  • the lift 1 comprises a shaft 2 extending vertically in the aforesaid building from a bottom 3 to a ceiling 4. Having said building two floors and assuming that all floors are served by the lift 1 , the shaft 2 comprises three floor-side doors 5.
  • a car 6 can translate vertically in the shaft 2 to allow the transport of people or objects from one floor to the other of the said building.
  • the car 6 comprises a plurality of walls mutually connected to delimit a housing for accommodating one or more persons. More precisely, the car 6 comprises a floor 7 from which one or more side walls 8 end in a top panel 9.
  • the car 6 further comprises a car frame 10 which acts as a supporting structure for the walls 7, 8 and 9 outside the aforesaid housing.
  • the car frame 10, preferably of the "L" type comprises a base 11 opposed to the floor 7 and a pair of uprights 12 rising from the base 11 orthogonally to the latter. The uprights 12 lie on the same side as the base 11 , are opposed to one or more of the walls 8 and extend beyond the top panel 9.
  • the car frame 10 further comprises a crossbar 13 comprising a first end 14 and a second end 15 opposite to said first end 14.
  • the crossbar 13 is integrally connected to the uprights 12 above the top panel 9 and at the ends 14 and 15, respectively.
  • the car 6 can be translated vertically into the shaft 2 by means of a pair of guide rails 16 (previously identified as "first pair of guide rails") to which the car 6 is bound.
  • the guide rails 16 are accommodated in the shaft 2, are connected to at least one wall delimiting the latter and extend vertically, preferably along its entire length.
  • the car 6 is bound by the guide rails 16 to translate vertically in the shaft 2 between at least one first position, in which the distance between the bottom 3 and the car 6 is minimum, and a second position (shown in figure 1) in which the distance between the bottom 3 and the car 6 is maximum.
  • first position in which the distance between the bottom 3 and the car 6 is minimum
  • second position shown in figure 1 in which the distance between the bottom 3 and the car 6 is maximum.
  • the shaft 2 comprises a free pit space 17, i.e., a lower portion of the compartment 2 (previously identified by the expression 'first portion' and between the bottom 3 and the car 6 in the first position) not occupied by the car 6.
  • the shaft 2 comprises a free header space 18, i.e., a lower portion of the compartment 2 (previously identified by the expression “second portion” and comprised between the car 6 in the second position and the ceiling 4) not occupied by the car 6.
  • the car 6 is moved inside the shaft 2 by a linear actuator 19 of the "hydrodynamic" type.
  • the actuator 19 comprises a cylinder 20 comprising a first end 21 and a second end 22 opposite to the first end 21.
  • the cylinder 20 is integrally connected to the bottom 3 at the end 21 and extends vertically from the bottom inside the shaft 2.
  • the actuator 19 further comprises an actuator plunger 23 also comprising a first end (not shown in the figures) and a second end 24 opposite to said first end.
  • the plunger 23 is accommodated in the cylinder 20 at a stretch thereof starting from said first end of said plunger 23. The latter further extends vertically inside the shaft 2 from the end 22 of the cylinder 20.
  • the plunger 23 is vertically translatable in the shaft 2 relative to said cylinder 20 so that a translation of the plunger 23 relative to the cylinder 20 determines an increase or a decrease of the distance between the end 24 of the plunger 23 and the end 22 of the cylinder 20.
  • the actuator 19 comprises a pump 25 suitable for either introducing or drawing working fluid into or from a hermetically sealed chamber included in the cylinder 20 and comprised between the end 21 of said cylinder 20 and the aforesaid first end of the plunger 23.
  • the working fluid preferably consists of mineral oil.
  • an introduction of oil into said hermetically sealed chamber determines a translation of the plunger 23 relative to the cylinder 20 to make the distance increase between the end 24 of the plunger 23 and-the second end 22 of the cylinder 20.
  • Drawing of oil from said hermetically sealed chamber determines a translation of the plunger 23 relative to the cylinder 20 such as to reduce the distance between the end 24 of the plunger 23 and the end 22 of the cylinder 20.
  • the car 6 is moved inside the shaft 2 by at least one rope 26 comprising a first end 27 and a second end opposite the end 27.
  • the rope 26 is connected to the bottom 3 at the end 27 and to the car frame 10 at said second end thereof.
  • the rope 26 is at least partially wound on a return element 28, preferably consisting of at least one pulley, connected to the shaft 23 at the end 24 of the latter.
  • the cylinder 20 and the plunger 23 are shaped so that said second end 24 of said plunger 23, and said transmission element 28 therewith, always lie above the top panel 9.
  • the pulley 28 diverts the rope 26 from the bottom 3 towards the car frame 10 so that a translation of the plunger 23 relative to the cylinder 20 such to increase the distance between the end 24 of the plunger 23 and the end 22 of the cylinder 20 determines a distancing of the car frame 10, and with it of the car 6, from the bottom 3, and a translation of the plunger 23 relative to the cylinder 20 such to reduce the distance between the ends 24 and 22 determines an approaching of the car frame 10 to the bottom 3.
  • the lift 1 comprises a control panel 29 suitable to command the pump 25 both to introduce oil into the aforesaid hermetically sealed chamber included in the cylinder 20 (to make the car 6 go up into the shaft 2) and draw oil from said chamber (to make the car 6 go down).
  • the car 6 is preferably placed in the aforesaid second position (i.e., on the top floor of the building in which the lift 1 is installed) and lifting means 30 are connected to the ceiling 4 of shaft 2, inside the latter (as shown in figure 2).
  • the means 30 preferably consist of a pair of chain hoists connected to the ceiling 4 preferably respectively near the guide rails 16. The hoists 30 are connectable to an object to move the latter either towards or away from the ceiling 4.
  • the hoists 30 are advantageously connected to the ceiling 4 by a person previously housed in the car 6, after that the person has exited from the car 6 through the top panel 9 and has climbed onto on top of the latter.
  • the hoists 30 are connected to a crossbar 31 (previously identified as "first crossbar") to lift the crossbar into the shaft 2.
  • the crossbar 31 comprising a first end 32 and a second end 33 opposite to the end 32, supports an electric winch 34 and part of a governor 35 comprising a first part 36 of the same preferably consisting of at least one pulley.
  • the crossbar 31 is hoisted in the free space of header 18, here integrally connected to the delimiting walls of the shaft 2 and/or guide rails 16 respectively at the ends 32 and 33 (as shown in figure 3), and disconnected from the hoists 30.
  • the crossbar 31 is advantageously inserted in the car 6, arranged in the shaft 2 through the top panel 9, connected to the hoists 30, hoisted in the free header space 18, connected to the guide rails 16 and/or to the walls delimiting the shaft 2 and disconnected from the hoists 30 by the person who climbed onto the top panel 9.
  • the crossbar 13 (of the car frame 10) is removed from the uprights 12 and replaced by a crossbar 37 (previously identified as "second crossbar") supporting a brake 38.
  • the crossbar 37 comprising a first end 39 and a second end 40 opposite to the end 39, is integrally connected to the uprights 12, above the top panel 9, at the ends 39 and 40, respectively.
  • the brake 38 is further installed on the guide rails 16 (as shown in figure 4).
  • the crossbar 37 is advantageously inserted in the car 6, arranged in the shaft 2 through the top panel 9 and connected to the uprights 12 by the person who climbed onto the top panel 9. Said person also installs the brake 38 on the guide rails 16.
  • the crossbar 37 in addition to the brake 38, may be integrally connected to a return element, preferably consisting of one or more pulleys.
  • a supporting crossbar is connected to the car frame 10 to prevent the latter from deforming during the period of time between the removal of the crossbar 13 and the connection of the crossbar 37.
  • Said supporting crossbar like the crossbar 37, comprises a first end and a second end opposite to the first end.
  • the supporting crossbar before the crossbar 13 is removed, is preferably integrally connected to the uprights 12, above the top panel 9, respectively at its ends.
  • the supporting beam can be temporarily connected to the car frame 10. In other words, it can be removed from the uprights 12 after the crossbar 37 has been connected to them.
  • the car 6 is preferably in the aforesaid second position, the supporting crossbar is advantageously inserted in the car 6, arranged in the shaft 2 through the top panel 9 and connected to the uprights 12 by the person who climbed onto the top panel 9.
  • a second return element 41 of the governor 35 is connected to the bottom 3.
  • the second return element 41 is preferably made up of one or more pulleys.
  • a rope 42 having two ends mutually connected to create a loop is connected to the car frame 10 and wound on the pulleys 36 and 41 to complete the installation of the governor 35.
  • the latter is connected to the brake 38 and put into operation (as shown in figure 5) so that whenever the car 6 when in descending motion, reaches a limit speed, the governor 35 actuates the brake 38 to stop the translation of the car 6.
  • the hoists 30 are dis- connected from the ceiling 4 and connected to the crossbar 31 so that the hoists 30 can be connected to an object to move it towards or away from the crossbar 31.
  • the hoists 30 are advantageously disconnected from the ceiling 4 and connected to the crossbar 31 by the person who climbed onto the top panel 9.
  • the hoists 30 After the hoists 30 have been connected to the crossbar 31 , said hoists 30 are connected to car frame 10 to move the latter, together with the car 6, into the shaft 2 (as shown in figure 6). Since the car 6 is preferably in the aforesaid second position, the car frame 10 is advantageously connected to the hoists 30 by the person who climbed onto the top panel 9.
  • the brake 38 is forcibly activated, so that car frame 10, together with the car 6, is integrally connected to the guide rails 16, i.e., immobilized.
  • the cable 26 is removed from the lift 1.
  • the actuator 19 is disconnected from the control panel 29 and both are removed from the lift 1 together with the pulley 28 (as shown in figure 7).
  • the pulley 28 is advantageously removed from the plunger 23, before the removal of the latter from lift 1 , by the person who climbed onto the top panel 9.
  • the shoes (not visible in the figures) through which car frame 10 is bound to the guide rails 16 can be replaced by different shoes while car frame 10 is immobilized.
  • a second pair of guide rails 43 and a counterweight 44 bound to them are installed (as shown in figure 8).
  • the guide rails 43 are preferably connected to the guide rails 16 respectively so that they are accommodated in the shaft 2 and preferably extend vertically over the entire length of the latter.
  • the guide rails 43 are connected to the guide rails 16 in successive stretches. More precisely, first of all, it is necessary to connect a first end stretch of the guide rails 43 to the guide rails 16. Said first stretch is the stretch of guide rails 43 closest to the bottom 3 and preferably extends starting from the latter.
  • the brake 38 is deac- tivated and the hoists 30 are actuated so that the car 6 is placed in the aforesaid first position (i.e., on the ground floor of the building where the lift 1 is installed).
  • the brake 38 is then forcibly reactivated for safety reasons and a second stretch of the guide rails 43 is integrally connected to the guide rails 16 consecutively to the first stretch.
  • the second section of the guide rails 43 can be advantageously connected to the guide rails 16 by a person previously accommodated in car 6 after said person has left the car 6 through the top panel 9 and has climbed onto it.
  • the brake 38 is deactivated and the hoists 30 are actuated to raise the car 6 sufficiently so that the person who has climbed onto the top panel 9 can integrally connect an additional stretch of guide rails 43 to the guide rails 16 consecutively to the aforesaid second stretch of the guide rails 43.
  • the brake 38 is forcibly activated and the aforesaid additional stretch of the guide rails 43 is integrally connected to the aforesaid second stretch of the guide rails 43.
  • the installation of the aforesaid first stretch of guide rails 43 may take place before the removal of actuator 19, the rope 26 and the control panel 29 from the lift 1.
  • the counterweight 44 is bound to the guide rails 43.
  • the guide rails 43 bind the counterweight 44 to move vertically within the shaft 2.
  • the counterweight 44 may be integrally connected to a return element, preferably consisting of one or more pulleys.
  • the electric winch 34 and the counterweight 44 are mutually connected by at least one rope 45 (previously identified by the expression "traction rope"), and preferably by a plurality of belts, so that, when the electric winch 34 is not actuated, the rope 45 cannot run and the car 6 and the counterweight 44 are stationary relative to the shaft 2, and, when the electric winch 34 is actuated, the rope 45 will run relative to the crossbar 31 , the car 6 and the counterweight 44 will run in opposite directions at the same time, so that the car 6 is movable between the aforesaid first and second positions (as shown in figure 9).
  • the rope 45 is connected at both ends to the ceiling 4 and is wound in a suitable (and known) manner on the pulleys, previously mentioned, connected to the crossbar 37 and the counterweight 44, so that both the car 6 and the counterweight 44 are supported by two throws of the rope 45.
  • the hoists 30, the winch 34, the governor 35, the brake 38, the guide rails 43, the counterweight 44, the rope 45, the control panel 46 and the moving modes of a car in a traction lift are widely known in the lift industry. No further details are therefore given.

Landscapes

  • Types And Forms Of Lifts (AREA)
  • Elevator Control (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente invention concerne un procédé pour transformer un ascenseur hydraulique en un ascenseur électrique. Pour la mise en œuvre dudit procédé, tout d'abord, une paire de palans à chaîne doit être installée sur le plafond de la cage. À l'aide de ce qui précède, une traverse avec un treuil électrique et un régulateur est hissée à partir du plafond de cabine. Ladite traverse est reçue dans l'espace collecteur libre et fixée aux rails de guidage de cabine. La traverse du cadre de cabine est ensuite remplacée par une nouvelle traverse sur laquelle un frein est installé. La poulie de retour du régulateur est successivement fixée à la partie inférieure de la fosse. Le régulateur est ensuite relié au frein et mis en fonctionnement. Après activation forcée du frein, la cabine est reliée aux palans à chaîne, qui ont été transférés entre-temps depuis le plafond de la cage jusqu'à la traverse susmentionnée supportant le treuil. L'actionneur linéaire hydrodynamique de l'ascenseur hydraulique est ensuite retiré, et les rails de guidage de contrepoids sont installés dans des tronçons successifs, à partir de la partie inférieure de la fosse. Les rails de guidage de contrepoids sont reliés exclusivement aux rails de guidage de cabine. Le contrepoids est finalement attaché à ses propres rails de guidage et, au moyen de courroies, au treuil et à la cabine pour déplacer cette dernière.
EP21701164.2A 2020-12-03 2021-01-13 Procédé de transformation d'un ascenseur hydraulique en un ascenseur électrique Pending EP4255839A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102020000029768A IT202000029768A1 (it) 2020-12-03 2020-12-03 Metodo per convertire un ascensore idraulico in un ascensore a trazione
PCT/IB2021/000001 WO2022118065A1 (fr) 2020-12-03 2021-01-13 Procédé de transformation d'un ascenseur hydraulique en un ascenseur électrique

Publications (1)

Publication Number Publication Date
EP4255839A1 true EP4255839A1 (fr) 2023-10-11

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EP21701164.2A Pending EP4255839A1 (fr) 2020-12-03 2021-01-13 Procédé de transformation d'un ascenseur hydraulique en un ascenseur électrique

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EP (1) EP4255839A1 (fr)
IT (1) IT202000029768A1 (fr)
WO (1) WO2022118065A1 (fr)

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CN116750617B (zh) * 2023-07-18 2024-01-02 特码斯派克工业技术(安徽)有限公司 一种立井摩擦式提升机的快速换绳机构及方法
CN117088264B (zh) * 2023-10-20 2024-03-19 邹平市供电有限公司 一种供电施工辅助设备

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FI119322B (fi) * 2006-12-14 2008-10-15 Kone Corp Menetelmä hydraulihissin modernisoimiseksi
JP4595011B2 (ja) * 2008-10-31 2010-12-08 三菱電機ビルテクノサービス株式会社 既設エレベータの改修方法及びエレベータ装置
JP4748207B2 (ja) * 2008-11-12 2011-08-17 三菱電機ビルテクノサービス株式会社 油圧エレベータのリニューアル方法及びその方法によりリニューアルされたロープ式エレベータ
WO2012168992A1 (fr) * 2011-06-06 2012-12-13 三菱電機株式会社 Procédé de rénovation d'ascenseur

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IT202000029768A1 (it) 2022-06-03
WO2022118065A1 (fr) 2022-06-09

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