Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B19/00—Mining-hoist operation
  • B66B19/002—Mining-hoist operation installing or exchanging guide rails
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
  • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
  • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
  • B66B9/022—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable by rack and pinion drives
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
  • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
  • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure

Definitions

• the present invention relates to the field of elevators, and in particular construction elevators intended for descending activities.
• the invention relates to an elevator assembly that can be mounted independently by reverse assembly, that is to say by assembling a progressive mast from the top to the bottom of the structure.
• the invention also relates to the docking and dismantling of said lift.
• lifting platforms or lifts are generally used in order to lower or raise the operators responsible for the excavation. or the implementation of the works.
• the use of an elevator is desirable but its implementation is complex in a digging site, for example a gallery or a well. Indeed, the bottom of the latter is not stable because it is being dug and its altitude changes with the advancement of the digging level. It is therefore not possible to take support on the ground to set up an elevator.
• a known solution consists in suspending the lift in the upper part of the structure and gradually assembling the mast downwards, this so-called “inverted” assembly is carried out by incrementing the mast sections under a first mast section already in place.
• This solution is complex and is carried out with the help of external means.
• the assembly of a suspended elevator according to the prior art involves:
• Patent FR 2964960B1 gives an example of a suspended elevator, the guide mast of which is progressively mounted using a crane as described above. This solution allows the use and assembly of a suspended elevator in a digging site. However, a suspended elevator mounting method is desired which is autonomous and easier to implement. It is also desired that said elevator can dock in a secure manner at the bottom of the excavation during and after the excavation work, so that it can be dismantled in a quick and simplified manner.
• the present invention provides a rack-and-pinion drive elevator assembly for the inverted assembly of a mast, that is, from top to bottom.
• the elevator assembly allows the length of a mast to be extended by the progressive assembly of mast sections routed and positioned for its splicing by means of said elevator.
• the invention provides an elevator assembly with rack and pinion drive for descending activities, said assembly comprising a mast provided with a rack and being assembled from several mast sections, a cabin comprising an electrical cabinet and a center control of said cabin, characterized in that the cabin comprises:
• said cage also comprises at least one position sensor and means for locking said plate.
• the design of the elevator is very advantageous in that the cabin cooperates with the mast only by means of the drive unit disposed on the upper part of the cabin.
• the cage is therefore suspended from the mast by means of said drive unit and does not require guidance with the mast.
• This cabin architecture allows the positioning of the cabin cage below the mast when the power unit is stopped at a lower part of the mast. It is thus possible to easily route and position the mast sections by means of the cabin.
• the secure stopping system allows the cabin to be positioned underneath the mature in complete safety, said secure stopping system comprising:
• parachute device capable of braking and stopping the pinion drive system in the event of overspeed
• a device for detecting the absence of a lower and / or upper mast configured to transmit a stop signal from the cabin when it detects a lower and / or upper end of the mast;
• an automatic top stop device for the power unit comprising at least one power unit position sensor activated by a top stop cam fixed at a predetermined safety distance from an upper end of the mast;
• an automatic low stop device of the drive unit comprising at least one low position sensor of the drive unit activated by a low stop cam fixed to a chassis of the driving unit;
• a fall arrest device comprising a locking member configured to engage with the rack when said device reaches the lower end of the rack;
• the elevator assembly comprises a suspension ramp corresponding to this first part of the mature, said suspension ramp being preassembled from the several mast sections and comprising:
• a head mast section comprising a lifting beam on an upper end and not being provided with a rack;
• a suspension mast section comprising a connecting piece intended to cooperate with an anchoring piece fixed in the upper part of the excavation to suspend said suspension ramp, and being provided with a rack section;
• the elevator assembly is also provided with an anti-collision system communicating with the electrical cabinet and control center of the cabin, said anti-collision system comprising:
• an object detector configured to transmit an emergency stop signal upon detection of an object in a docking area of the cabin
• a distance sensor configured to transmit a running speed conditioning signal based on a detected distance between the cabin and the ground
• a plunger provided with at least one position switch for controlling a stop of the stroke, said plunger extending from a lower part of the cabin towards the ground and comprising a height Y defining a minimum stopping distance between the floor of said cabin and the floor of the structure, and for which the position switch is activated upon contact of a diver's foot with the ground.
• the object detector comprises a detection beam along a horizontal plane, said beam being positioned at a predefined distance XI from a lower face of the cage, and corresponding substantially to a distance X2 traveled by the cabin for obtain its total stop following a stop command triggered when the car is moving at a programmed docking speed.
• the lifting assembly comprises a load transfer system allowing the suspended mast to rest on the ground, said system comprising at least one height adjustable foot assembled with the lower end of the mast, and for which an increase in the height of said foot makes it possible to bring said foot into contact with the ground, and to transfer a weight of the lifting assembly from a point of suspension of the mast to the ground.
• the invention also relates to the methods of implementing the elevator assembly, in particular for the inverted assembly of the mast, docking of the elevator, and its dismantling. More particularly, the invention provides a method of inverted assembly of a mast by means of the lifting assembly of the invention, said method comprising a step of inverted assembly of the mast by progressive splicing of several mast sections. standard conveyed by means of said elevator, said step comprising the following substeps, repeated until a desired mast length is obtained:
• the assembly method comprises a preliminary step in which a first sub-assembly is installed in the upper part of the structure, comprising said cabin mounted on a suspension ramp, in which the suspension ramp is installed. is slung from a lifting beam for said ramp, and suspended by a connecting piece of said ramp to a first anchoring piece fixed to said upper part of the structure.
• the invention also proposes an optimized docking method for the elevator by means of an anti-collision system, said system comprising a plunger provided with a position switch, an object detector and a distance sensor, said process comprising the following steps:
• a minimum distance threshold between the cabin and the ground is signaled by the distance sensor, and preferably by activating an audible warning device.
• a threshold for example a threshold of 4 m.
• This method is very advantageous in that it allows secure docking of the elevator when excavation work is in progress. This avoids a loss of time which would be necessary to install a security fence around the docking area of the elevator and its dismantling to continue the excavations.
• this fence is desired when the excavation work is finished and the workers are constantly moving on the excavation floor.
• the excavation floor has a final depth and a fence is installed around the docking perimeter of the cabin, with a secure access door to access said elevator, and in which the emergency stop sub-step of the cabin is deactivated and / or in which the plunger and the object detector are removed from the cabin.
• the invention provides a method of disassembling the elevator assembly of the invention, said elevator assembly comprising a load transfer system comprising at least one height-adjustable foot, said method comprising the following steps:
• FIG. 1 A schematic representation of the riser assembly and the fishplate of a mast section by the reverse assembly process.
• FIG.2 One embodiment of the suspension ramp of the elevator assembly. LEFT: a side view of the suspension ramp; TO THE RIGHT ; a close up perspective view of a forward face of a standard mast section.
• FIG. 3 A perspective view of a rear face of the cabin according to one embodiment.
• FIG. 4 A representation of the anti-collision system of the elevator assembly.
• LEFT A side view of the cabin with an anti-collision system.
• RIGHT A view of the front of the cabin incorporating the collision avoidance system.
• FIG. 5 An embodiment of the mast load transfer system. LEFT, a view of a rear face of the mast integrating the load transfer system. RIGHT: a side view of the mast integrating the load transfer system.
• the present invention provides an elevator assembly (Fig. 1) with rack / pinion drive comprising a mast 2 and a cabin 10.
• the elevator assembly 100 is designed to allow the inverted assembly of the mast on a well / or gallery in progress. excavation. As illustrated in Figure 1, the elevator assembly descends along a suspended mast to a lower end 21 of said mast to route mast sections to be assembled below the mast.
• the sections of mats to be assembled are positioned for its assembly, one by one, by means of a movable plate 120 of said elevator.
• the elevator assembly of the invention is very advantageous in that it allows the inverted mounting of the mast independently and without resorting to external means such as cranes or nacelles. This autonomous assembly is possible after the installation of a first sub-assembly comprising the cabin 10 mounted on a first part of the mast suspended in height from the structure.
• said first part of the mast is a suspension ramp facilitating this installation step.
• the 2000 suspension ramp (Fig. 2) is formed by several preassembled mast sections, including:
• a head mast section 24 disposed at a top end of the mast and being integral with a lifting beam 244;
• a suspension mast section 23 comprising a connecting piece 230;
• the mast sections of a mast structure have at least four corner posts 210, 210 'corresponding to the main chords of a truss girder interconnected by four rigid horizontal frames 211 and braced by solid diagonals 212
• all of the mast sections have the same dimensions, such as L.450mm x 1.250mm x H 1508mm 060.
• the mast sections have different heights.
• the suspension mast section 23 is particular in that it is able to collaborate with said connecting piece and comprises a structure capable of taking up the forces generated by the suspension of the mast.
• Each standard mast section 20, as well as the suspension mast section 23 has a vertical rack section 22 attached to the horizontal frames 211 on a front face of the mast.
• the rack 22 has a toothed side face 222 opposite a smooth side face.
• the front face of the mast is identified when the mast is installed in a structure, said front face being opposite a wall of the structure and corresponding to the side furthest from said wall.
• the rear face of the mast is placed face to face with the wall of the structure and corresponds to the face closest to the wall of the structure. The same references are used to describe the elevator.
• the head mast section 24 does not have a rack in order to avoid the driving of the cabin in its highest section, and therefore to prevent the risk of exiting the cabin upwards.
• the suspension mast section 23 also includes the connecting piece 230 by means of which the suspension rail 2000 is suspended.
• the connecting piece 230 is made in the form of two plates integral with a rear face of the suspension mast section and comprising upper and lower connection (fixing) points 233 making it possible to obtain a built-in connection (or complete connection) with a primary anchoring part 50, itself in connection with the installation.
• the connection points 233 are axes.
• the primary anchoring part 50 is a beam fixed to the edge slab of the well, in the upper part of the structure and has notches to receive the lower axis of the connecting part 230.
• a plate can be used to block the structure. output of said axes.
• a tie rod 231 or strut connects the upper axis to the primary anchoring part 50.
• the primary anchoring part is fixed to a wall of the well.
• the suspension ramp is lifted from the lifting beam 244 by means of, for example, a crane allowing the ramp to be conveyed to the anchor piece.
• the suspension ramp and the cabin installed on said ramp are thus suspended and secured from the upper part of the structure.
• the mast is said to be suspended.
• a secondary anchoring part 250 comprises an anchoring tube fixed by means of a fixing collar on a rear corner post of the mast and having a fixing paste intended to be fixed to the pole. wall of the structure.
• the mast can be assembled autonomously by an operator at the bottom of the excavation by means of the cabin and without resorting to means. exterior. This so-called inverted assembly is possible due to the characteristics of the cabin of the invention.
• the cabin 10 has an upper part and a lower part (FIG. 3).
• the upper part corresponds to a drive unit 11 integrating a pinion drive system cooperating with the rack 22 of the mast, guide elements with the mast and a secure stop system for the cabin.
• the lower part corresponds to a cage 12 comprising a movable plate 120, dimensioned to receive a mast section in a vertical position and designed to position said mast section below the mast when said plate is in an extended position.
• the lower part of the cabin is integral with the upper part.
• the invention suggests suspending the cabin 10 from the mast 2 only by means of the upper part of the cabin, to allow the lower part of the cabin to descend below a lower end 21 of the mast. suspended. More particularly, the cage 12 is suspended from the mast by means of the drive unit 11.
• Figure 3 shows an embodiment of the drive unit 11 provided with a frame further comprising:
• said pinion drive system comprising a pair of motors 110, 110 "each equipped with a pinion 114, 114";
• the guide elements corresponding to guide rollers 112 and 112 'positioned on the frame to guide the movement of the cabin along the mast.
• high rollers comprising a set of three guide rollers on each lateral side (left and right) of the frame
• low rollers also comprising a set of three guide rollers on each lateral side (left and right) of the frame;
• a secure stopping system for the cabin comprising:
• parachute device 111 intended to brake and stop the cabin in the event of overspeed, said parachute device comprising a pinion collaborating with the rack;
• an upper and lower mast absence detection device comprising two sensors positioned, one at the top end of the frame and the other at the bottom end of the frame. These sensors are configured to transmit a stop signal when the lower or upper end of the mast is detected, this signal resulting, for example, in stopping the drive motor and triggering a brake;
• an automatic high stop device comprising two position sensors 160 and 161 of the driving unit arranged in the upper part of the driving unit 11, actuated by two separate cams fixed to the mast 2, at a predefined safety distance of the upper end of the mast.
• an automatic low stop device comprising two position sensors arranged in the lower part of the drive unit, actuated by two separate cams, of different lengths and sliding in the chassis of the drive unit. These cams are actuated by a low stop fixed to the mast, at a predefined safety distance from the lower end of the mast.
• the first “stop down” position sensor is actuated and the cabin is automatically stopped.
• the cabin continues its travel until the second cam actuates the second "stop out of low travel” position sensor, the cabin is then automatically stopped. It should be noted that this automatic low stop device is only activated in the presence of said low stop on the mast;
• + shock-absorbing stops 140 able to come into contact with the low mechanical stop placed at a predefined safety distance from the lower end of the mast, make it possible to cushion and prevent the cabin from descending too low, and prevent the cabin has an exit downward from the mast and thus prevents the cabin from falling;
• a fall arrest device 3 placed on a lower part of the power unit and being configured to adopt an engaged configuration when a member of the fall arrest device leaves the lower end of the mast.
• an organ engages with the rack and stops the cabin.
• a sensor detects the triggering of the fall arrest device and transmits a stop signal, resulting, for example, in stopping the drive motor and triggering a brake.
• the anti-fall device acts as the ultimate safety device to limit the downward travel of the cabin and its exit from the mast, in particular when the lower stopper is missing. For example, during reverse assembly operations of the mast requiring the absence of said bottom stop to put in place an additional mast section.
• the anti-fall device is therefore a safety element for the reverse mounting method of the mast, this anti-fall device making it possible to prevent the riser from falling when the bottom stop is not present on the mast and : o the operator makes a movement control awkwardness (does not stop before exiting the mast), o the device for detecting the absence of a lower mast is faulty, o the brake (s) engines are faulty and the cabin slips down o the descent speed does not reach overspeed and therefore does not trigger the parachute device o the operator is clumsy during a manual emergency descent.
• the cabin is stopped by the operator, so as to position the cabin floor of the cabin below the mast, at a sufficient distance (H + 100mm) to increase a mast section.
• the mast section to be assembled is positioned on the movable plate 120 making it possible to place said section plumb with the mast already in place (See Figure 1).
• the movable platform has at least two positions, a retracted position in the cabin and the extended position towards the rear of the cabin. The travel of the plate relative to the cage is limited by at least one stop.
• the tray 120 is a sliding tray and the cabin cage has a pair of rails 130, 130 'extending horizontally from the inside out to guide the tray.
• Each rail has a guardrail and stops.
• a width between the rails is greater than a width of the mast, so as to allow the movement of the mast between said rails.
• the tray In a retracted position of the tray 120 (as illustrated in Fig. 3), the tray is housed in the floor of the cage, with an upper surface of the tray substantially level with the surface of said floor.
• the tray also comprises a guillotine casing 122 determining a rear wall of the tray, said wall being complementary to a rear opening of the cage in which said casing is positioned when the tray is in the retracted position.
• the housing 122 slides vertically along the guardrail. In the “in-service” use configuration, the tray is locked in the retracted position and the casing is locked in the extended up position, thus blocking any opening in the wall of the cage.
• the housing In configuration of use "in assembly” the housing is unlocked and slid in the retracted position (in front of the guardrail of the platform) allowing the operator to access the lock of the platform and gain access to the mast.
• the housing therefore moves with the plate.
• the plate and the casing are also provided with at least one locking means and at least one position sensor making it possible to condition its use according to their position.
• the cabin floor In order to position the mast section below the existing mast, the cabin floor is brought down to a height below the mast slightly greater than a height of the mast section to be assembled. The cabin is therefore driven electrically upward at micro-speed until contact with the mast sections, so that an operator can splint said sections.
• each mast section has a height H of 1508 mm and the cabin is configured so that the floor of the cage goes down to - (H + 100mm) or around -1608mm below the mast.
• the platform is provided with one or more centralizers making it possible to perfectly position the mast section on the platform, facilitating contacting and splicing with the mast.
• the plate 120 may also include an overload detection device produced for example with one or more stress judges transmitting a stop signal, in order to avoid damaging the movable plate, particularly when the section is brought into contact. of mast with the masts. Indeed, without such a device, stopping is controlled by the operator. In case of clumsiness the tray can be damaged.
• a preliminary step is carried out, consisting in fixing (or suspending) to the structure the sub-assembly composed of the suspension ramp 2000 equipped with the cabin 10, using external means such as a crane or nacelle.
• the primary anchoring part 50 In order to suspend the suspension ramp, it is necessary to first install the primary anchoring part 50 to the structure.
• the primary anchoring part is specifically designed for an installation, it will therefore be adapted according to the needs and constraints of its installation linked to each site. 1st stage of installation of the lifting assembly: fixing of the sub-assembly to the structure.
• the sub-assembly being composed of the suspension ramp fitted with the cabin. Step carried out using an external means such as a crane.
• This second step comprises the following sub-steps:
• n standard mast sections 20 and a pair of secondary stability anchoring parts 250 in the cabin 2.1- loading of n standard mast sections 20 and a pair of secondary stability anchoring parts 250 in the cabin; 2.2- lowering of the cabin 10 in order to position the floor of the cabin at a distance slightly greater than the height H of the mast section. For example, a distance of at least H + 50 mm, and preferably about H + 100 mm;
• the guiding and centering of the mast is improved by installing at least two bolts, without nuts, diagonally on the last mast of the suspended mast.
• the jointing is carried out using four TH M20 x 180 screws, eight M20 flat washers and four M20 locknuts.
• the elevator assembly At the end of the second stage the elevator assembly is ready for its normal use, that is to say to allow the transport of personnel and materials.
• the elevator assembly may be put into service with a provisional mast height, and on unstable ground and for which the excavation work will continue subsequently.
• the present invention proposes to equip the elevator with an anti-collision system making it possible to prevent any risk of collision when docking the elevator (Fig. 4).
• the anti-collision system 4 makes it possible to condition a running speed of the cabin, as well as to order the automatic stopping of the cabin as a function of a distance from said cabin to the ground and / or of the detection of an object in a zone. docking of the cabin.
• the anti-collision system comprises an object detector 45, a distance sensor 42, at least one position switch 47 and a plunger 40 extending from a lower part of the cabin towards the ground and defining a minimum stopping distance between the floor of said cabin and the floor of the excavation in contact with a foot 41 of said plunger.
• the object detector is positioned below a lower face of the cabin, for example on said plunger. As illustrated in the embodiment shown on the left in FIG.
• the anti-collision system transmits an emergency stop signal when an object is detected by a detection beam following a horizontal plane of the body.
• object detector the detection beam is positioned at a predefined distance XI from the underside of the cage, and corresponding substantially to the distance X2 traveled by the car to obtain its total stop following an emergency stop command at a speed programmed docking.
• the detection beam is positioned 370 mm from an underside of the cabin for a docking speed of 10 m / min.
• the object detector 45 is a laser scanner allowing the detection of objects below the elevator but also in a predefined ratio, such as in a ratio of 8 m around the elevator.
• the anti-collision system is also provided with a camera for viewing images of the docking area of the elevator.
• the plunger 40 has a telescopic tubular body positioned vertically outside a front face of the cage 12 of the cabin 10, and is connected to said cage 12 of the cabin by means of an arm. 46 fixing.
• Said plunger incorporates at least a first position switch 47 “down stop”, preferably reinforced by a second position switch 48 “out of low travel”.
• the first position switch 47 is activated when the diver is placed in contact with the ground and his body sinks slightly actuating said first position switch 47.
• the position switch 47 transmits a signal to an electrical cabinet of the cabin triggering an immediate stop control of the stroke, if the cabin does not stop, the body of the diver activates the second position switch 48 when it continues to sink to command the ultimate stop of the stroke.
• the plunger has a height Y between the underside of the cabin and its foot to the ground of approximately 550 mm actuating the first switch, and a minimum height Ymin of approximately 420 mm actuating the second switch. position and to prevent the crushing of a person lying below the cabin when a failure of the first switch and the object detector does not stop the front cabin.
• the anti-collision system 4 also makes it possible to condition the speed of descent of the cabin when it approaches the ground of the excavation, this speed being able to be programmed according to the distance between the ground and the cabin detected by means of the sensor of distance 42.
• Cab 10 is also equipped with a folding access ramp, with non-slip floor, optionally servo-controlled, lockable and manoeuvrable from inside and outside the cab when the lift is stopped.
• a closed position of this ramp is controlled by a position sensor configured to allow or prevent movement of the car according to the position of the ramp.
• Access to the cabin is from a lateral side of the cabin by means of this access ramp.
• the elevator assembly will be routinely used by personnel working at the bottom of the excavation.
• the flow of personnel around the berthing perimeter is quite significant and can therefore frequently trigger the anti-collision and stop the cabin during its berthing.
• the invention proposes to install a fence around the lift assembly with protective panels of approximately 2 m in height, and allowing access to the cabin only from a secure door.
• This fence (not shown) is for example placed on the ground or is integral with the mast and not resting on the ground.
• the docking area of the cabin is thus secured and the anti-collision device can be reconfigured so as to no longer command the stopping of the cabin when the object detector detects personnel or objects in the docking perimeter.
• a descent speed can also be reprogrammed and the anti-collision system plunger removed.
• a suspended lifting assembly such as the lifting assembly of the invention
• the dismantling of a suspended lifting assembly is normally done from the bottom up and independently by means of the cabin with the exception of the first part of the mast and the cabin being dismantled by means of a crane or other lifting means.
• this self-contained bottom-up disassembly process is substantially equivalent to the reverse steps of the reverse assembly process.
• the invention provides a load transfer system with which the weight of the assembly is transferred to the ground to allow disassembly from the top to the bottom of the mast. Following the transfer of load from the lift assembly to the ground, rapid top-to-bottom disassembly is achieved using a crane or other lifting device, as well as the cabin.
• the cabin is used to allow one or more operators to position themselves at a desired height of the mast to hook the parts of the mast to the crane from a roof of the cage, as well as to disassemble the fishplates and the fish. anchoring the mast from inside the cage.
• the elevator assembly comprises a load transfer system comprising at least one height-adjustable foot, assembled at the lower end of the mast.
• the transfer system comprises two adjustable feet 80, 80 "in height and assembled to an underside of the mast by means of a fixing plate 82.
• the at least one leg is assembled directly to the lower end of the mast and without the intermediary of a mounting plate.
• the adjustable feet 80 in height make it possible to configure the feet with a first height allowing the mast to rest on the ground, to then raise said mast during its configuration to a second height allowing the primary anchoring part to be unloaded. and transfer the weight of the mast to the ground.
• the plate 82 is splinted in a horizontal position with the angle posts 210 of the mast, at least partially closing a lower face of the mast.
• the adjustable feet form vertical jacks, resting on the ground and extending upwards through the plate, so that its upper end is housed in the mast.
• the height of the adjustable feet is changed by means of a manual screw-nut jack system.
• the load transfer system is integrated with the base fence.
• the present invention thus makes it possible to reduce the number of operators and of the means required for the assembly and disassembly of the elevator assembly, as well as to improve the speed of these operations.
• the lift assembly also helps secure sensitive operations, such as the reverse assembly step using the Safe Stop System or docking using the Collision Avoidance System.

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• 2020
  • 2020-05-14 FR FR2004757A patent/FR3110155B1/fr active Active
• 2021
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