OA7744A - Lift comprising at least one telescopic mast. - Google Patents

Lift comprising at least one telescopic mast. Download PDF

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Publication number
OA7744A
OA7744A OA58338A OA58338A OA7744A OA 7744 A OA7744 A OA 7744A OA 58338 A OA58338 A OA 58338A OA 58338 A OA58338 A OA 58338A OA 7744 A OA7744 A OA 7744A
Authority
OA
OAPI
Prior art keywords
mast
elevator
platform
vertical
frame
Prior art date
Application number
OA58338A
Other languages
French (fr)
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OA07744A (en
Inventor
Degerry Louis
Original Assignee
Comabi S A
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 to FR8311920A priority Critical patent/FR2549029B1/en
Application filed by Comabi S A filed Critical Comabi S A
Publication of OA7744A publication Critical patent/OA7744A/en
Publication of OA07744A publication Critical patent/OA07744A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations

Description

1 07744
15
85
The present invention © aeme a lift éappa rtaïttau at least one telescopic mat®
There are now several types of risers, such as a platform or a platform that allows operators to work at a certain height above the ground, for example for the maintenance or repair of building facades, floor lamps, and the like. high height "1 ° maintenance of hangar frames, etc" ® ·
The first type of elevator concerns hydraulic lifts comprising a nacelle that can accept two people. The elevation is obtained by the ssswesient of mechanically welded arms arfcieu- les between them and generally controlled by hydraulic cylinders®
In addition to the fact that they are very expensive, these devices are bulky when they are folded to the ground. Another type of elevator comprises a working platform animated by a vertical lifting movement obtained by the action of Usou of several hydraulic cylinders acting on a device of feras articulated between them according to the technique called "chisel" · These devices are heavy and expensive, and present, from a functional point of view, the disadvantage of a significant limitation in height · C The third type of elevator comprises a platform carrying a working form fixed to the end of a telescopic central mast. The vertical lifting movement is obtained by deploying the mast using hydraulic or mechanical means. ·
In addition to the fact that they are very expensive, these devices are dark and very heavy, there are also lifts with a single mast "@pi" in which the folded mast occupies a very high vertical position. above the chassis®
Finally there are elevators with two telecontrol masts arranged at two ends of the work platform! vertical movement of the platform being obtained by deployment or tee =>: the simultaneouscopaçe of the two masts from a single manual winch or. 1 electric® 1
Nevertheless, the implementation of the elevator before the telescoping operation is long and delicate.
It consists of manually rotating the camera. ? as 2 07744 horizontal or near horizontal to the vertical position both masts. After having been manually locked in this position, the two vertical masts are equipped with the working platform. This is a long operation and may present certain risks 5 "for the operator.
In the folded position, the two horizontal masts are super-posed, which constitutes a cumbersome solution, and requires an asymmetrical construction of the chassis mainly at the articula- tion of the masts. The present invention seeks to overcome these disadvantages. For this purpose, in the elevator it concerns the type com-taking at least one telescopic mast hinged on a substantially horizontal frame near one of its ends around a horizontal axis, the axis of articulation of the mast on the frame is located in a horizontal plane above the upper plane of the frame, to allow the housing of the platform between the frame and the mast, when the latter is folded horizontally, the flat -form remains associated with each when it is horizontal.
This elevator has the advantage of being of reduced size and to constitute a complete apparatus that does not require the addition of additional parts for the passage from the folded position to the unfolded position. In addition, the fact that in the folded position the masts are above the frame allows, in addition to the housing of the platform, the accommodation of other organs such as the actuating motor of the masts 25 and the platform .
This elevator is equipped with means allowing, in a first time, the pivoting of each mast from its horizon-tal position to the vertical position, then the deployment of the masts and the displacement of the platform along them. . The automation of the means for actuating the masts and the platform allows a single operator to set up and deploy the elevator in the workplace without any other operations than the control of the motorization of the masts and the machine. platform.
Since this elevator comprises several masts associated with two opposite ends of the platform, the different masts are offset relative to one another so as to pivot in parallel planes sufficiently far apart from each other, for the purpose of the invention. The different masts can be juxtaposed in the same horizontal plane in the folded position.
This solution is very interesting because ensuring one. great compactness of the device in folded position, while simplifying its. By standardizing the parts used for the different masts, since these are articulated at the same distance from the chassis. According to another embodiment of this elevator, each mast is constituted by a plurality of telescopic tubular sections nested one inside the other, of which that of larger section comprises, on its face turned towards the middle. two longitudinal profiles forming a guide rail for a platform carriage, the smaller section section of which is longer than that of the other sections, is equipped in its projecting portion with the different sections two rails arranged in the extension of the preceding, the drive means of the platform and sliding elements of. each mast being such that, starting from the low position of the platform, the latter is moved upward until each carriage is engaged in the rails of the profiles of smaller section, before the beginning of the sliding towards the outside 20 different constituent sections of the masts.
This solution is interesting from the point of view of the embodiment, since it makes it possible to use simple elements such as tubular profiles, while allowing the production of poles having an excellent rigidity. In addition, from a practical point of view, it is advantageous for the platform to always be in the high position of the masts so that the operator is as close as possible to the area where intervention is to be made.
In any case, the invention will be better understood with the aid of the description which follows with reference to the appended schematic drawing showing, by way of nonlimiting examples, several embodiments of this elevator:
Figure 1 is a perspective view of a first riser with two masts, the masts being deployed and the platform est-anlrem positionhaute; Figure 2 is a perspective view, the masts being tilted in a vertical position and the platform being in the down position;
FIG. 3 is a perspective view, the masts being in a folded position;
Figure 4 is a perspective view of one end of the platform and the carriage on which it is mounted;
Figure 5 is a vertical sectional view on an enlarged scale 5 'along the line 5-5 of Figure 2 of the lower part of a mast;
Figure 6 is a horizontal sectional view of the lower portion of a mast taken on line 6-6 of Figure 5;
Figure 7 is a view similar to that of Figure 5 in the unlocked position of the mast; Figure δ is a view of the lower portion of a mast in a horizontal position;
Figure 9 is a very schematic view of the drive-ment system of the various mast elements;
Figure 10 is a cross-sectional view through the upper ends of the various elements of a mast;
Figure 11 is a perspective view of an alternative embodiment of a mast made from tubular sections; f £
Figure 12 is a very schematic view of the drive system of the elements of the mast of Figure 11; Figure 13 is a perspective view of a first carriage for guidance in the mast of Figure 11;
Figures 1 ^ and 15 are two partial views in longitudinal section, of a mast equipped with the carriage of Figure 13, respectively in vertical position and horizontal position; Figures 16 and 17 are two partial views in longitudinal section of a mast equipped with a carriage constituting an alternative embodiment of that of Figure 13, respectively in vertical position and in horizontal position;
1d and 19 are two partial views, in longitudinal section, of a mast equipped with a carriage constituting another variant of that of FIG. 13, respectively, in a vertical position and in a horizontal position.
Figure 20 is a schematic perspective view of a riser with two masts equipped with a base of elevation of the frame; Figure 21 is a side view of the elevator of Figure 20 during the pivoting movement of the masts from the horizontal to the upright position; : 5
Figure 22 is a side view of the elevator of Figure 20, the masts being in a vertical position;
Figure 23 is a side view of the elevator of Figure 20, the chassis resting on the elevation base, and the masts being folded in a horizontal position;
Figure 2 is a side view of a riser to a mast, the latter being in a vertical position;
Figure 25 is a cross-sectional view of this elevator along the line 25-25 of Figure 2;
Figure 26 is a side view of this elevator, the mast being deployed
Figure 27 is a side view of this elevator, the mast is folded in a horizontal position j
Figure 28 is a perspective view and an enlarged scale of mast locking means. The elevator, shown in Figures 1 to 10 comprises a chassisorizontal (2) formed by a frame mounted on rollers (3). However, it should be noted that this frame could be placed on the tray of a vehicle, on a trailer, or be self-propelled depending on the desired use.
This frame carries, at each of its ends, two series of supports (4) offset laterally relative to each other, each bracket (4) carrying, at its upper end, an axis (5) serving for the articulation of a mast (6). The hinge pins (5) of the masts (6) are parallel and arranged in a horizontal plane located above the frame (2). The hinge axis (5) of each mast is arranged such that when the latter is in a vertical position, the vertical line passing through its center of gravity is located between the hinge axis and the center of the device, thus facilitating the tilting of the masts towards the horizontal position.
Each mast (6) comprises three telescopic parts eachchale consists of two braced elements. Each element (7) has a double U shape, one groove (S) of which serves for the housing and the fixing of spacers (9) ensuring its connection with the other element (7), and a groove (10) for guiding an element (7) of immediately lower section, or rollers (12) for the element of smaller section.
The rollers (12) belong to a carriage (13) associated with each mast. For this purpose, this carriage comprises four braced rollers. One of the struts of the carriage (13) comprises two vertical and paraileal yokes (14) serving to articulate about an axis parallel to the axes of articu-lation (5) of the masts, a frame (15) carrying the platform (16). As shown in the drawing, it is equipped, in a known manner, a railing (17), in areas that are not located next to the masts.
This method of mounting the platform and articulation of the masts allows, when folding horizontally thereof, to accommodate the platform (16) beneath them, as shown in Figure 3, which leads to a very compact realization.
As shown in the drawing, each mast (6) is equipped with a system ensuring its locking in the vertical position. This system comprises two bushings (18) integral with the chassis (2) forming latches in which two bolts are incorporated constituted by two rods (19) mon-tés sliding longitudinally to the mast in sleeves (20) andsubmitted each to the action of a spring (22) tending to extend the rod (19) of the lower end of the mast. During the passage of the mast 20 from the horizontal position to the vertical position, each bolt (19) enters a striker (18) at the end of the pivoting movement. This lock can be released only manually, for example by means of a stop (23) holding the bolts. the out position, as shown in FIG. 7, requiring the operator to descend from the platform to unlock the two masts manually. This prevents that, as a result of falsework, the operator causes the folding of the masts, while it is still on the platform.
Each mast is, furthermore, equipped with a locking system of different parts constituting it, when they are in a position in one another. This system comprises a plate (24) integral with the second part of telescopic elements, comprisinga central orifice (25) in which is intended to penetrate a rod (26) integral with the outer part of the mast. This rod (26) is integral with a plate (27) connected by two columns (28), parallel to the rod (26), to another plate (29) located on the other side of the plate (24) by relative to the rod (26).
Springs (30) normally hold the rod (26) in the pushed position towards the locking plate (24). A stop (32) 9 associated with each mast, is mounted on the frame (2), against which it bears on the plate (29), when the mast arrives in a vertical position. The action exerted on the plate (29), transmitted by the columns (28), causes the rod (26) to be withdrawn from the orifice (25) of the plate (24).
The different parts of the mast can then slide freely. In folding period of the elevator, this lock occurs from the beginning of the pivoting of each mast, at the moment when the plate (29) escapes the stop (32).
Such an arrangement is interesting because allowing the drive system whose operation is described below, to act only for the pivoting of the mast, as long as it is not in a vertical position.
The drive means of the elevator are constituted by an electric motor (33) located at the lower part of the frame, comprising an output shaft on which are wedged two drums (34) on which are wound two cables (35), according to reverse windings, each cable being associated with a mast.
Each cable (35) passes first on a pulley (36a) integral with the frame. The axis of this pulley, as well as the axis of all other pulleys described below, is parallel to the pivot axis of the mast considered. The cable (35) then passes over two pulleys (36b) and (37) mounted respectively at the lower and upper ends of the larger section portion of the mast. The free end of the cable (35) is fixed at (38) to the lower end of the second part of the mast. A second cable (39) passing over a pulley (40) disposed at the upper end of the second mast portion is fixed by its ends, respectively, at (42) at the upper end of the larger mast section portion, and (43) in the lower part of the third part of the mast. Finally, a cable (44) passing over a pulley (45) disposed in the upper part of the mast is fixed at its ends at (46) at the upper ends of the second part of the mast and at (47) on the platform. From a practical point of view, the operation of this elevator from its folded position shown in Figure 3 is as follows; The actuation of the motor (33) causing a winding of the cables (35) on the drums (34) results, as shown in FIG. 7, by a tilting torque on the two masts (6) causing the passage of these In the course of this movement, the different parts of the two masts can not deploy, being kept locked relative to each other, thanks to the lock (26) - (30). When the masts arrive in a vertical position, the support on the stops (32) causes the unlatching of the different parts of the masts relative to each other thus allowing their deployment. In addition, when the masts arrive in a vertical position, they lock in it by engaging the bolts (19) in the latches (18). The operator can then take place on the platform and control the continuation of the winding of the cables (35) on the drums (34). This operation is reflected by the cable circuit described above by the deployment of the telescopic parts of the two masts 15 and the upward movement of the platform in the elements of the third telescopic part to reach the position represented in FIG. shown in Figure 1.
To fold the elevator, simply operate the electric motor (33) in the opposite position. The different parts of the two poles 20 then penetrate into each other and the platform lowers up to come in the position shown in Figure 2. The operator must then leave the platform to manually unlock the spades (19) and keep them in the unlocked position using the stops (23). Continued actuation of the motor (33) then allows pivoting of the two masts over the platform, with automatic locking of the telescopic elements of the two masts as soon as they escape the stops (32). Upon tilting of the masts, each rod (26) engages in the plate (24), releasing the corresponding stop (23) and allowing the exit of the bolts (19) under the action of the springs (22).
The mast (50), represented in FIG. 11, is made from three tubular profiles capable of interlocking with one another, respectively a section (52) of large section, a profile (53) of intermediate section, and a profile (54) of small section. On the face of the profile (52) turned towards the middle of the apparatus, are fixed two U-shaped profiles (55) forming guide rails for a trolley. The profile (54) of smaller section is of longer length than 07744 9 of the profiles (52) and (53) so as to protrude from them when the three mast elements are in the nested position. On the part of the profile (54) projecting from the other two sections are fixed two rails (56) arranged in the extension of the rails (55). The length of the rails (56) is sufficient to accommodate a platform support carriage (16). From a practical point of view, the tilting movement of each mast and relative movement of the various elements thereof, is obtained from an electric motor (57) integral with the chassis, the output shaft causes as many drums (58) that the elevator comprises poles. On the drum (58) is wound a cable (59) passing successively on pulleys (60) and (62) arranged in the lower part and in the upper part of the element (52), (63 and 64) disposed in the lower part and in upper part of the element (53) and (65 and 66) arranged, respectively, in the lower part and in the upper part of the element (54), the free end of the cable being fixed in (67) on the platform (16) or the driving means thereof.
In the embodiment shown in FIG. 13, the carriage (13) having the structure described above is mounted on a plate (68) with the possibility of a slight axial displacement. This plate (68) has a hole (69) near its upper end for catching the cable (59) and a hole (70) near its lower end for engagement of a locking finger. (72).
Indeed, in such a case, it is imperative to realize the blocking of the platform in the low position, to prevent the movement thereof along the poles before they have reached the vertical position. The finger (72) fulfills a function similar to that of the finger (26) described above and the means used in the same way as those described have the same reference.
As shown in Fig. 14, when the platform (16) is in the down position, the finger (72) is disengaged from the hole (70). When the masts are tilted horizontally, the finger (72) locks the plate (68), the carriage (13) being able to slide slightly along the plate (68), as shown in FIG. the distance between the respective axes of articulation of the mast 35 on the frame and the platform on the carriage.
FIGS. 16 and 17 show an alternative embodiment of the device represented in FIGS. 13 to 15. In this variant, where the same elements are designated by the same references as before, the carriage is rigidly mounted on a plate (68a) allowing a locking relative to the mast and the hooking of the cable (59) = In these conditions, the mounting of the platform (16) on the carriage is carried out via a rod (73) engaged in open rings (74) integral with the carriage (13), and closed by means of locks (75) when the masts are in a vertical position.When, from the position shown in FIG. 16, each mastbascule to its horizontal position, the latches (75) are actuated in open position by support they take on fingers (76) solidairesdu chassis. The platform (16) can thus escape the rings (74) and is separated from the carriages (13) resting directly on the frame, as shown in Figure 17. In a new passageses mast (50) in a vertical position, the rods (73) of the platform (16) are automatically locked in the rings (74).
Figures 18 and 19 show another alternative embodiment in which the platform (16) is rigidly mounted on a carriage (76).
In addition, the guide means of the carriage (76) are consti-killed not only by the rails (55 and 56) of the masts, but also by rails (77) integral with the chassis which, in the vertical position of the masts, extend the rails in solidarity with them. From a practical point of view, when the carriage (76) is low, its guide rollers are exclusively inside the rails (77). Therefore, the carriage (76) does not tilt with the mast to which it is associated, during the passage thereof to thehorizontal position, as shown in Figure 19. In this case, there is provided a locking system of the carriage by via a finger (78) integral with the frame, having the same mode of actuation as the locking fingers described above, can bedamped in vertical position of the mast by action of a stop (79) soli-daire of this last. In the latter case, it is necessary to provide an additional pulley (80) for guiding the cable (59) in the junction zone between the rails (55) and (77).
Figures 20 to 23 of the drawing show an elevator equipped with a base of elevation of the frame. In fact, elevators of this type are often used for maintenance work and maintenance in factories, warehouses or department stores to perform work at height on ventilation and heating ducts, electrical cables, appliances However, premises are most often congested machines or other fixed elements, it is not possible to position anywhere at ground level, the chassis of a lift. To remedy these drawbacks, the elevator according to the inven-tion can be equipped with an elevation base comprising two pairs of crutches (82) each of which, on the one hand, means of fixing on a mast (6) and on the other hand, fastening means on the frame (2). For this purpose, each stand (83) has, in its upper part, two series of holes (84, 85) intended to cooperate with series of holes (86, 87) formed, respectively, in a mast (6) or in the frame ( 2) for attachment to one or other of these two elements. In addition, each stand (83) is equipped at its lower end with a wheel (88) and with a support pad (89) mounted at the end of a screw jack (90) of longitudinal axis on the stand. From a practical point of view, the two pairs of crutches (82) are fixed on the two masts (6) when they are in horizon-tal position, with the holes (84, 86) being marked according to the elevation desired of the frame (2). It is then proceeded, as shown in Figure 21, the tilting of the poles (6), a movement in which the wheels (88) are supported on the ground. The elevator is then positioned at the place of use, for example above a machine (92) after which, by use of the jacks (90), it is placed in stable support on the shoes (89), 22. If the apparatus is to be moved inside the same room, it is possible to fix the two pairs of stands (82) on the frame (2) through the holes (85, 87) before folding the masts (6) on the horizontal horizon, as previously described, the apparatus occupying the position shown in FIG. 23.
FIGS. 24 to 28 show a riser with a mast, comprising, as previously described, a frame (2) close to one end of which is disposed a pair of supports (4) at the top of which is articulated around a horizontal axis (5), the mast (93). In this case, the mast is constituted not by open profiles, but by a lower profile (94) of larger tubular section, the following elements (95, 96) being U-shaped profiles whose (95) is slidably mounted in that (94) and of which that (96) is slidably mounted 12 in that (95). The inner profile (96) is equipped at its upper end with a tubular portion (97) of the same cross section as the element (94), and extending the latter when the various elements of the mast are nested on them. in each other. This elevator is equipped with a nacelle 5 (98), whose guidance on the mast (93) is achieved by means of a belt (99) bearing on the perimeter of the mast by means of pebbles (100) . From a practical point of view, when the apparatus is in the position shown in Figure 24, the nacelle is first moved along the element (94) and then along the extension (97) of the inner profile (96) only after, that the profiles (94, 95, 96) are removed from each other to continue the elevation of the nacelle.Lors lowering the nacelle, operations are performed in the opposite order . This solution provides a device guideway on the mast, of constant section, while enjoying the advantages of telescopic elements.
As shown in Figure 26, it is possible to equip the guide belt (99) of one or two nacelles (98).
Each nacelle has, in side view, a structure in the form of deformable parallelogram. When tilting the mast (93) from the vertical position to the horizontal position, the edge (102) of the floor of the nacelle abuts against the frame (2) of the elevator, which translates as the movement continues by the deformation of the parallel-logram which takes a flattened diamond shape. The diagonal (102,103) ensures the holding of the nacelle, in the position of use thereof. Figure 28 shows the mast locking means.
On the mast is fixed a part (104) inside which slides longitu-dinalement the mast a pin (105) whose lower end forma bolt cylindrical (106) intended to engage in a part (107) secured to the chassis, forming a strike. This device also comprises a pin (108) sliding transversely to the mast, intended to penetrate into a plate (109) integral with the carriage carrying the nacelle. The pin (108) can pass through an enlarged portion (110) of an opening in the pin (105) only when the pin is in the down position. Springs (112, 113) are associated with the pins (105) and (108), respectively, which tend to move them toward their unlocking position. From a practical point of view, when the mast arrives in a vertical position, the pin (105) is moved downwardly against the action 07744 13 of the spring (112) until the enlarged portion ( 110) of the opening arrives opposite the pin (108). The latter then unlocks the plate (109) and by engagement in the opening (110), locks the pin (105, 106) in the low position. To fold the elevator, it is done in reverse.

Claims (24)

  1. I, 07744 CLAIMS
    1. - Elevator of the type comprising at least one telescopic mast articulated, on a substantially horizontal frame near one of its ends around a horizontal axis, characterized in that the articulated axle (5) of the mast (6) on the frame (2) is located in a horizontal plane above the upper plane of the frame, in order to allow the housing of the platform (16) between the frame and the mast, when the it is folded horizontally, the platform remaining associated with each when it is horizontal.
  2. 2. - Elevator according to claim 1, characterized in thatthe articulation axis (5) of each mast is arranged such that when it is in a vertical position, the vertical line passing through its center of gravity is located between l axis of articulation and the center of the apparatus.
  3. 3. - Elevator according to any one of claims 1 and 2, characterized in that it is equipped with means for, in a first time, the pivoting of each mast (6) from its horizontal position upres vertical position and then deploying the masts and moving the platform (16) along them. ty. - Elevator according to any one of claims 1 to 3, characterized in that, in that it comprises several poles (6), associated with two opposite ends of the platform, the different masts are offset with respect to other, so as to pivot in parallel planes sufficiently distant from each other, so that the different masts can be juxtaposed in the same horizontal plane-tal in the folded position.
  4. 5. - Elevator according to any one of claims 1 tocharacterized in that it comprises means ensuring the automatic locking of the different parts of each mast in the retracted position, as long as the mast is not in a vertical position, then the release different elements of the mast as soon as the mast is in a vertical position.
  5. 6. - Elevator according to any one of claims 1 to 5, characterized in that it comprises means ensuring theautomatic latching of each mast in a vertical position, when passing it from the folded position to the vertical position, without possibility automatic unlocking.
  6. 7. - Elevator according to claim 6, characterized in that the lower end of each mast in a vertical position is located substantially at the level of the frame of the frame, that is to say below the axis of articulation of said mast.
  7. 8. - Elevator according to any one of claims 6 and 7, characterized in that each mast (6) is equipped, near the end sonextrémité, at least one finger (19) maintained pushed elastically so as to protruding from the latter and to penetrate inside a dowel (18) integral with the chassis, forming a striker, when the mast is in horizontal position.
  8. 9. - Elevator according to any one of claims 1 to 8, characterized in that the platform (16) comprises a frame (15) pivotally mounted at least at one end, about a parallel axis to the axis of articulation of a mast on a carriage displaceable longitudinally along said mast.
  9. 10. - Elevator according to any one of claims 1 to 9, characterized in that each mast (6) is constituted by two series of elements (7) braced each having the shape of ur double U which a groove (8) serves to the housing and the fixing of the spacers connecting it to a corresponding element and whose other groove (10) serves for guiding a lower section element or rollers (12) guide the platform for the smallest element .
  10. 11. - Elevator according to the set of claims 5 and 10, characterized in that the locking means of the differentelescopic elements of each mast (6) are constituted by a finger (26) which carried by the element of larger section , is pushed elastically so as to penetrate into an orifice (25) formed in a plate (24) carried by the element of immediately lower section, a stop (32) integral with the frame being provided which, resting on the support (29) with the finger when the mast is in the vertical position, releases the fingers of the plate integral with the second element, allowing the libéloulement of the telescopic elements.
  11. 12. - Elevator according to claim 11, characterized in that the means ensuring the pivoting of each mast between the horizontal and vertical positions and the deployment and telescoping thereof-cicomprennent a motor (33) disposed within the frame (2) driving a drum (34) on which is wound a cable (35) passing over a pulley (36b) disposed at the lower end of the mast portion (6) of greater section, on a pulley (37) disposed at the upper end of the same element, and whose free end is fixed to the lower end of the telescopic portion of immediately lower section, a second cable (39) passing on a pulley (40) mounted at the upper end of the second the element being attached to the upper end of the first part and the lower end of the third part, another cable (44) passing over a pulley (45) disposed at the upper end of the first part; the third part being attached to the upper end of the second part and the lower end of the fourth part or to the platform if the mast comprises three telescopic elements.
  12. 13. - Elevator according to any one of claims 1 to 9, characterized in that each mast (50) is constituted by several telescopic tubular profiles (52-54) nested within each other, including one (52) larger section comprises, on its face turned towards the middle of the apparatus, two longitudinal sections (55) forming 15 guide rails for a carriage (16) of the platform and whose (54) of smaller section, of greater length to that of the other profiles, is equipped in its overlapping part thereof in the nested position of the different profiles, two rails (56) arranged in the continuation of the preceding, the drive means of the platform and coui-tees 20 elements of each mast being such that, starting from the low position of the platform, it is moved upwards until each carriage is engaged in the rails of the profiles of smaller section, before the start of the couli outward movement of the different constituent profiles of the masts.
  13. 14. - Elevator according to claim 13, characterized in that the means ensuring the pivoting of each mast between the horizontal and vertical positions, the displacement of the platform (16) and the flow of the mast elements (52 - 54) are constituted by a motor (57) disposed inside the frame, driving a drum (58) on which is wound a cable (59) passing successively on pulleys arranged at the lower end and at the upper end of each mast element starting from the element of larger section, and ending with the element of smaller section, the free end of the cable being attached to the platform or the driving means thereof.
  14. 15. - Elevator according to claim 14, characterized in that it comprises locking means of the end of each cable driving the platform, as soon as the masts leave the vertical position. 17 07744
  15. 16. - Elevator according to claim 15, characterized in that the locking means of each end of a cable are constituted by a finger (72, 76) associated with elastic means actuating it inside a member (68). ) carried by the free end of the cable (59), the finger being mounted on the element of larger section of the mast, andeasant to be retracted against the elastic meansby action of a stop, when the mast considered occupies a vertical position.
  16. 17. - Elevator according to the set of claims 13 to 16, characterized in that each carriage (13) carrying the platform (16) is mounted, with the possibility of a slight longitudinal displacement to the mast considered, on a plate (68). ) at the upper end of which is fixed a drive cable (59) and whose lower part has a hole (70) for the introduction of the locking finger during the inclination of the mast in relation to the vertical.
  17. 18. - Elevator according to the set of claims 13 to 16, characterized in that each carriage carrying the platform is mounted rigidly on a plate at the upper end of which is fixed a drive cable (59) and the lower part has a hole (70) for the introduction of the locking pin, when the mast considered'incline relative to the vertical, the platform being fixed on the plate with a lock (74, 75 ) capable of being opened when the platform is in a low position and the mast in question is tilted relative to the vertical.
  18. 19. - Elevator according to all of claims 13 to 16, characterized in that the platform (16) is rigidly mounted on each of the carriages (76) associated with the different masts, the guide means of each carriage at the bottom being constituted by destronçons rails (77) integral with the frame, remaining in a vertical position, and arranged in the extension of the rails (55) equipping the mast when it is in a vertical position, this carriage having a hole for the introduction of the finger of locking (78) when the mast considered occupies a position inclined relative to the vertical.
  19. 20. - Elevator according to any one of claims 12 and 14, characterized in that, insofar as it comprises severalmasts (6), if is equipped with a single motor (33) on the output shaft which are stalled as much drums (34) that the elevator comprises of masts. 07 744 18
  20. 21. - Elevator according to any one of claims 1 to 20, characterized in that the frame is of adjustable width to change the spacing between the different masts, that is to say the distance between the pivoting planes of said masts .
  21. 22. - Elevator according to any one of claims 1 to 21, equipped with two masts (6), characterized in that it is equipped with an elevation base comprising two pairs of legs (82, 83) each of which is equipped fastening means (8 ^, 87), on the one hand, on a mast (6) and, on the other hand, on the frame (2),
  22. 23. - Elevator according to claim 22, characterized in that each leg (83) is equipped, at its lower end, uneroue (88) and a shoe (89) mounted at the end of a jack to screw (90) with axis parallel to the stand.
  23. 24. - Elevator according to any one of claims 1 to 7, comprising a single mast, characterized in that the mast (93) comprises a plurality of telescopic elements, including the outer (94) is constituted by a tubular profile, and whose ( 96) of smaller section is equipped, at its upper end, a section (97) of tubular section same section as the element (94) and coming in the extension thereof when the elements are in the retracted position. in one another, the platform being mounted on the mast via a belt (99) bearing on the elements (94) and (97) by rollers (100), the movement control means ensuring all first, moving the platform along the elements (94) and (97) and then disengaging the telescopic elements (94-96) from each other.
  24. 25. - Elevator according to claim 24, characterized in that the locking means of the mast (93) and the platform (98) comprise a pin (105) for locking the mast (93) in a vertical position on the frame (2). ) and a pin (108) for locking the platform (98) in a down position on the mast, the pin (108) being releasable to be unlocked and engaged in an opening (110) of the spindle ( 105) when the latter is in the locked position in the frame (2).
OA58338A 1983-07-11 1984-07-11 Lift comprising at least one telescopic mast. OA7744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8311920A FR2549029B1 (en) 1983-07-11 1983-07-11 ELEVATOR COMPRISING AT LEAST ONE TELESCOPIC MAT

Publications (2)

Publication Number Publication Date
OA7744A true OA7744A (en) 1985-08-30
OA07744A OA07744A (en) 1985-08-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
OA58338A OA7744A (en) 1983-07-11 1984-07-11 Lift comprising at least one telescopic mast.

Country Status (7)

Country Link
US (1) US4619346A (en)
EP (1) EP0135452B1 (en)
AT (1) AT20333T (en)
DE (1) DE3460220D1 (en)
FR (1) FR2549029B1 (en)
MA (1) MA20170A1 (en)
OA (1) OA7744A (en)

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Also Published As

Publication number Publication date
OA07744A (en) 1985-08-30
EP0135452B1 (en) 1986-06-11
EP0135452A1 (en) 1985-03-27
FR2549029B1 (en) 1987-01-30
FR2549029A1 (en) 1985-01-18
US4619346A (en) 1986-10-28
MA20170A1 (en) 1985-04-01
AT20333T (en) 1986-06-15
DE3460220D1 (en) 1986-07-17

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