Handling device for an electrical device

Abstract

Title: Handling Device for an Electrical Device. The invention relates to the field of handling devices designed to meet the need to move equipment into or out of a booth, respectively, the booth being raised above ground level by a slab serving as the booth's floor, for example. The proposed handling device protects both the operators and the equipment being handled. More specifically, its stability minimizes the risk of falls or accidents. Furthermore, the proposed handling device minimizes the time required for handling equipment. Another advantage of the proposed handling device is its portability, particularly due to its compact size. Figure for the abstract: Fig. 1.

Description

Title of the invention: Handling device for an electrical device technical field

[0001] The present relates to the field of handling devices intended to meet the need to move material into or out of a booth, respectively, the booth being raised above ground level by a slab serving as the booth floor, for example.

[0002] The present invention relates more particularly to a handling device intended to meet the need to move an electrical device, such as an electrical transformer, weighing more than 35 kg, preferably more than 100 kg, or even much more (3500 kg or more for example), into or out of a booth raised above ground level, respectively. STATE OF THE ART

[0003] In order to extract or introduce an electrical transformer from or into a chamber raised above the outside ground, a rather rudimentary method is still used at present.

[0004] This method involves installing wooden blocks on the ground outside the enclosure, at the entrance door, and then placing metal rails, partly on the floor slab inside the enclosure and partly on the wooden blocks. The electrical transformer is then moved onto these rails so that it can be moved along them by rolling on its wheels, more specifically by rolling on its rollers. This movement requires pushing the transformer by an operator located inside the enclosure at the rear of the electrical equipment, and simultaneously lifting and pulling the transformer by at least one other operator located outside the enclosure. Often, the wooden blocks do not allow for a perfectly horizontal arrangement of the metal guide rails, and the spacing between the metal rails is not guaranteed to be constant.

[0005] This rudimentary way of proceeding implies far too many safety problems for both personnel and equipment.

[0006] It follows from the above that it is necessary to propose a solution, preferably easily transportable, for managing the insertion and extraction of an electrical device, particularly one weighing significantly more than 35 kg, preferably significantly more than 100 kg, minimizing risks to operators and equipment and / or minimizing the handling time required and / or adapting to the different formats of the electrical devices to be handled. SUMMARY

[0007] To achieve this objective, according to one embodiment, a handling device is provided for an electrical device, such as an electrical transformer, to be extracted or inserted from or into a compartment respectively, the compartment comprising a slab raised above the level of the ground surrounding the compartment, the handling device comprising: a. two load-bearing beams, each intended to rest, directly or indirectly, at a so-called proximal end, on the slab of the lodge at the level of an access door to the lodge, respectively, b. two crossbeams, each mechanically connecting the two supporting beams so as to keep them substantially parallel to each other with a determined center distance corresponding to a gap between front rollers and / or between rear rollers of the electrical device, and on which the electrical device is configured to be moved at least from front to back and vice versa, c. an elevation control system, relative to the level of the lodge slab, of each of the so-called distal ends of the two supporting beams, the elevation control being carried out relative to the ground level up to at least the level of the lodge slab, to bring the two supporting beams substantially horizontal, so that, when the electrical device is being extracted or introduced from or into the box respectively, the supporting beams can receive the load represented by the electrical device, allow the electrical device to be rolled on its rollers in a substantially horizontal direction, and allow, after extraction or before introduction, the electrical device to be supported outside the box, substantially horizontally and at the level of the box slab, so that the electrical device can be lifted into place by crane.

[0008] The handling device as described above provides protection for both operators and the materials being handled. More specifically, its stability minimizes the risk of falls or accidents.

[0009] Furthermore, the handling device as introduced above makes it possible to achieve a minimization of the time required for handling the material.

[0010] Another advantage of the handling device as introduced above is its transportability, in particular due to its small size.

[0011] A second aspect of the invention relates to the use of a handling device as introduced above, to extract or introduce an electrical device, such as an electrical transformer, from or into a box respectively, the box comprising a slab raised above the level of the ground surrounding the box. BRIEF DESCRIPTION OF THE FIGURES

[0012] The aims, objects, features and advantages of the invention will become clearer from the detailed description of an embodiment thereof, which is illustrated by the following accompanying drawings in which:

[0013] [Fig-1] Fig. 1 represents a perspective view of one embodiment of the handling device according to the invention.

[0014] [Fig.2] Fig.2 represents a top view of the embodiment which is illustrated in Fig.1.

[0015] [Fig.3] The [Fig.3] represents a longitudinal side view of the embodiment which is illustrated in the [Fig.1].

[0016] [Fig.4] [Fig.4] represents a cross-sectional side view of the embodiment which is illustrated in [Fig.1].

[0017] [Fig.5] The [Fig.5] represents the view illustrated in the [Fig.2] with a different center distance between the supporting beams of the handling device.

[0018] The drawings are given by way of example and are not limiting of the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention and are not necessarily to scale with practical applications. In particular, the dimensions indicated are for guidance only and are not limiting of the invention. DETAILED DESCRIPTION

[0019] Before proceeding with a detailed review of embodiments of the invention, optional features that may be used in combination or alternatively are listed below:

[0020] According to one example, a first of the two crossbeams mechanically holds the two supporting beams together by their distal ends and a second of the two crossbeams mechanically holds the two supporting beams together by their proximal ends.

[0021] According to one example, the crossbeams extend below the supporting beams.

[0022] According to one example, the handling device further comprises a system of adjustment and locking of the center distance between the two supporting beams.

[0023] According to the preceding example, with the two crossbeams mechanically connected to the two supporting beams so as to be substantially perpendicular to them, the system for adjusting and locking the center distance between the two supporting beams comprises at least: a. two bores of substantially oblong shape made in each of the two cross members along a longitudinal direction of each cross member, and b. two bolts for fixing a sliding mechanism of each of the two supporting beams in each of the bores.

[0024] According to one or both of the two preceding examples, the two crossbeams being mechanically connected to the two supporting beams so as to be substantially perpendicular to them, the system for adjusting and locking the center distance between the two supporting beams comprises at least, on each upper surface of the two crossbeams, a series of markings defining, in pairs, typical center distance lengths for different electrical devices. According to this example, the handling device offers flexibility with respect to the electrical devices to be handled, in particular with regard to the flexibility of the center distances between the supporting beams of the handling device.

[0025] According to one example, the elevation control system comprises at least, at each end of a first of the two which mechanically holds the two supporting beams together by their distal ends, a threaded rod passing substantially perpendicularly through the first cross member, a first height adjustment bolt for the considered end of the first cross member, a counter-bolt located opposite the adjustment bolt relative to the first cross member, a first upper end of each threaded rod being fixed to a fixed bolt intended to collaborate with a crank, preferably removable, of the handling device and configured to be able to rotate each threaded rod on its axis and a second lower end of each threaded rod being fixed to a foot of the handling device.According to this example, the handling device is advantageously purely mechanical and inexpensive, especially compared to a lifting control system that would involve using cylinders or other mechanical or hydraulic jacks, or even air cushions.

[0026] According to the previous example, each foot is mechanically linked to the second so-called lower end of the corresponding threaded rod by a spherical connection.

[0027] According to one example, at least one foot, preferably each foot, has a characteristic dimension at least twice greater than the diameter of the threaded rod to which it is associated and / or has a lower surface made of a non-slip material.

[0028] According to another example, the handling device includes a fixing element for the removable crank, so that the handling device can be moved together with the removable crank which allows adjustment of its position.

[0029] In one example, the handling device further includes a locking system for the handling device in position relative to the access door frame to the booth. In this example, the handling device, once installed, is particularly stable in all three spatial directions. This advantage is further enhanced by the rigidity of the handling device's structure.

[0030] According to the preceding example, the locking system comprises, for each of the supporting beams, a rod fixed free to translate along the supporting beam a rod free to rotate about its axis, and a locking bar fixed substantially perpendicular to a proximal end of the rod, each rod being of a length suitable for it to go beyond the proximal end of the supporting beam along which it is fixed free in translation and each rod being free to rotate about its axis, so that, by rotations of the rod, the locking bar associated with it can successively be folded to pass through the access door to the booth, then deployed on the other side of the access door to be put under tension and block a movement, at least of withdrawal, of the handling device relative to the booth.

[0031] According to an alternative or complementary example to the previous one, the locking system may include doweling or screwing the second cross member into a part of the floor of the box which is located substantially at the level of the door frame of the access to the box, for example into a part of a concrete slab constituting the floor of the box.

[0032] According to one example, the so-called proximal ends of the two supporting beams protrude relative to a second of the two crossbeams which mechanically holds the two supporting beams together by their proximal ends, so that its proximal ends can rest on the slab of the lodge and so that the second crossbeam rests on a lateral edge of the slab at the level of the access door to the lodge.

[0033] According to one example, at least one, preferably each, supporting beam takes the form of a U-shaped profile configured to guide the translational movement of the electrical device on its rollers.

[0034] According to one example, at least one, preferably each, supporting beam is based on a material and takes dimensions and a shape suitable for allowing a maximum deflection of deformation under load of the electrical device of less than 1 / 300th.

[0035] In one example, the handling device further comprises a two-dimensional level control system, such as a two-dimensional spirit level, arranged preferably in a substantially central position on the first of the two crossbeams that mechanically hold the two supporting beams together at their distal ends. In this example, the handling device offers easy positioning.

[0036] According to one example, the handling device may have a weight approximately equal to 100 kg, preferably less than 150 kg, and / or minimum dimensions preferably less than 1500 by 2000 mm, and preferably approximately equal to 1200 by 1500 mm.

[0037] According to one example, the handling device further comprises a winch or winch fixed at least in part to at least one other element of the handling device nuttention, and for example fixed to the first cross member of the handling device, and configured to facilitate the movement of the electrical device by operators from a loaded configuration of the handling device and / or from an unloaded configuration of the handling device.

[0038] An element based on a material A is understood to be an element comprising that material A and possibly other materials.

[0039] A parameter "approximately equal to / greater than / less than" a given value means that this parameter is equal to / greater than / less than the given value, to within 20% or 10% of that value. A parameter "approximately between" two given values ​​means that this parameter is at least equal to the smaller of the given values, to within 20% or 10% of that value, and at most equal to the larger of the given values, to within 20% or 10% of that value.

[0040] It is specified that, within the framework of the present invention, the relative terms "on", "under", "above", "below" do not necessarily mean "in direct contact with". Furthermore, these terms are to be interpreted in relation to an operational configuration of the handling device according to the invention.

[0041] The term "proximal" is used below to describe the quality of a part of an element that is close to the electrical device to be handled, and "distal" is used to describe the quality of a part of an element that is far from the electrical device to be handled.

[0042] The relative terms "front" and "back", as well as their derivatives or equivalents, refer to a direction of advancement of the electrical device with a view to extracting it from, or introducing it into, a compartment.

[0043] The term "housing" here refers to a location where the electrical device is installed, from which it cannot be directly lifted by crane; therefore, to remove it from its housing or, conversely, to install it, it is necessary to handle it to or from a position from which it will be possible to lift the electrical device by crane, respectively. Other terms could replace the term "housing," such as "room" or "covered elevation," which convey the same difficulty of handling the electrical device from or within a structure that is sufficiently congested or covered to prevent direct lifting by crane. Potentially, this will typically be the case when the structure includes a concrete beam and / or a self-supporting containment basin.

[0044] An embodiment of the handling device 1 according to the invention is described below with reference to the attached figures.

[0045] The handling device 1 is dedicated to the handling of an electrical device (not shown in the figures), such as an electrical transformer.

[0046] This type of electrical equipment is generally quite heavy, typically exceeding 35 kg, often weighing several hundred kilograms, and sometimes reaching 3.5 tonnes or more, necessitates careful handling to protect personnel and their health, as well as to ensure the integrity of the equipment.

[0047] These electrical devices are often mounted operationally in niches or small compartments to save space. Maintenance operations, or replacements of such electrical devices, require removing or inserting the device from or into a compartment, respectively, through a door designed for this purpose. The compartment generally includes a platform raised above the surrounding ground level, which leads to the handling issues mentioned in the introduction.

[0048] The handling device 1 according to the invention aims to address these problems.

[0049] With reference to [Fig.1], as well as to the others, the handling device 1 comprises at least some of: a. two supporting beams 11 and 12, and b. two crossbeams 13 and 14.

[0050] The two supporting beams 11 and 12 are intended to rest, each directly or indirectly, by a so-called proximal end 111 and 121 on the slab of the lodge at the level of the access door to the lodge, respectively.

[0051] The two cross members 13 and 14 each mechanically connect the two supporting beams (11 and 12) so as to maintain them substantially parallel to each other with a determined center distance (1112) corresponding to a gap between the front and / or rear rollers of the electrical device, on which the electrical device is configured to move at least back and forth. The cross members 11 and 12 could intersect so as to form a cross, to the ends of which each supporting beam would be fixed in pairs. However, it is preferable that the cross members 13 and 14 be parallel to each other, as illustrated in the figures.

[0052] The handling device 1 according to the embodiment illustrated in the figures may further include a lifting control system 15.

[0053] The elevation control is relative to the level of the platform slab and concerns each of the distal ends 112 and 122 of the two supporting beams 11 and 12. The elevation control can be carried out relative to the ground level up to at least the level of the platform slab. It allows the two supporting beams 11 and 12 to be brought substantially horizontally. The desired sensitivity to horizontality can be defined as including values ​​within the range of -10° to 10° relative to the strict horizontal. Depending on the circumstances of the handling operation to be carried out, it may indeed be advantageous to maintain a certain difference in level. along the path of the electrical device defined by the supporting beams 11 and 12.

[0054] The handling device 1 as introduced above allows, during the extraction of the electrical device from its housing, that the supporting beams 11 and 12 can receive from the slab the load represented by the electrical device rolled in a substantially horizontal direction on its rollers, and allow, after extraction, to support the electrical device outside the housing, substantially horizontally and at the level of the housing slab, so that the electrical device can be lifted from there by crane.

[0055] The handling device 1 as introduced above also allows, when the electrical device is introduced into a box, that the supporting beams 11 and 12 can receive the load represented by the electrical device by being lifted onto the supporting beams, then rolled in a substantially horizontal direction on its rollers, and allow, before introduction, the electrical device to be supported outside the box, substantially horizontally and at the level of the box slab.

[0056] According to the embodiment illustrated in the figures, the elevation control system 15 may include at least, at each end 131 and 132 of a first 13 of the two crossbeams 13 and 14 which mechanically holds the two supporting beams 11 and 12 together by their distal ends 112 and 122, a threaded rod 151 passing substantially perpendicularly through the first crossbeam 13. A first adjusting bolt 153 for the height of the considered end 131 or 132 of the first crossbeam 13, a counter-bolt 154 located opposite the adjusting bolt 153 relative to the first crossbeam 13, may complete the elevation control system 15.The counter bolt 154 can advantageously be used to secure, for the equipment and the operators, the handling which is permitted by the handling device 1 according to the first aspect of the invention, in particular by preventing a descent of the handling device, and more particularly of the first cross member 13, when the electrical device is loaded on the handling device 1.

[0057] A first end, referred to as the upper end 1511, of each threaded rod 151 can be fixed to a fixed bolt 152, for example, intended to work with a crank 156, preferably removable, of the handling device 1, or alternatively with an electric screwdriver, a ratchet wrench, an open-end wrench, a socket wrench, etc., configured to be able to rotate each threaded rod 151 about its axis. A second end, referred to as the lower end 1512, of each threaded rod 151 can be fixed to a foot 155 of the handling device 1. The handling device 1 can thus advantageously be purely mechanical and inexpensive, particularly compared to a lifting control system that would involve using mechanical or hydraulic jacks or other jacks, or even air cushions. These latter options would, however, allow the jacks, or air cushions to be controlled remotely via a remote control, which could be particularly advantageous in the case of particularly risky handling operations.

[0058] Preferably, each foot 155 of the handling device 1 is mechanically linked to the second, so-called lower end 1512 (see [Fig. 1]) of the corresponding threaded rod 151 by a spherical connection. This allows for the absorption of any unevenness in the floor surrounding the compartment.

[0059] The embodiment illustrated in the figures, and in particular as illustrated in [Fig.2], further includes, but is not limited to, an adjustment and locking system 16 for the center distance 1112 between the two supporting beams 11 and 12. It will be noted that the adjustment and locking system 16 also appears in the attached [Fig.5], but less visibly because the center distance 1112 is, in this figure, reduced compared to that illustrated in [Fig.2].

[0060] In the example illustrated in the figures, where the two crossbeams 13 and 14 are mechanically connected to the two supporting beams 11 and 12 so as to be substantially perpendicular to them, the adjustment and locking system 16 of the center distance 1112 between the two supporting beams 11 and 12 may comprise at least: a. two bores 161 and 162 of substantially oblong shape made in each of the two cross members 13 and 14 along a longitudinal direction of each cross member, and b. Two fixing bolts 163 and 164 allow each of the two supporting beams 11 and 12 to slide within each of the bores 161 and 162. Here again, the handling device 1 remains essentially mechanical, and therefore inexpensive, especially compared to motorized solutions.

[0061] Alternatively or in addition, the adjustment and locking system 16 for the center distance 1112 between the two supporting beams 11 and 12 may include, at least on each upper surface of the two cross members 13 and 14, a series of markings defining, in pairs, standard center distance lengths for different electrical devices.The handling device thus offers flexibility with regard to the electrical devices to be handled, in particular with regard to the flexibility of the center distances between the supporting beams of the handling device, which allows the handling device to be adapted easily and quickly to different types of electrical devices commonly encountered.

[0062] As particularly illustrated in Figures 1 and 5, the handling device 1 may further include a locking system 17 in the position of the handling device relative to the access door to the booth. According to this example, the handling device, once installed, is particularly stable in all three spatial directions; back-and-forth movements are rendered impossible thanks to the clamping (or sandwiching) between the frame of the access door to the booth and the support the load-bearing beams 11 and 12 against the slab of the lodge. An additional, but not essential, safety measure can be to screw the load-bearing beams 11 and 12 into the slab. Lateral movement, from left to right, of the handling device 1 is also prevented by the four supports provided by: a. Each support of the load-bearing beams against the slab and b. Each support at ground level is provided by the 155 anti-slip feet of the handling device 1, which have a wide footprint. This footprint can be further increased, if necessary, by placing rigid plates wider than the feet under the handling device, particularly to prevent the handling device 1, loaded with the electrical equipment, from sinking into soft ground.

[0063] More particularly, the so-called proximal ends 111 and 121 of the two supporting beams 11 and 12 preferably protrude relative to a second 14 of the two crossbeams 13 and 14 which mechanically holds the two supporting beams 11 and 12 together by their proximal ends 111 and 121. In this way the proximal ends 111 and 121 of the supporting beams 11 and 12 can rest on the slab of the lodge and the second crossbeam 14 can rest on a lateral edge of the slab at the level of the access door to the lodge.

[0064] The locking system 17 may more particularly include, for each of the supporting beams 11 and 12, a rod 171 fixed free in translation along the corresponding supporting beam and free in rotation about its axis, and a locking bar 172 fixed substantially perpendicularly to a proximal end 1711 of the rod 171. Each rod 171 may be of a length suitable for allowing it to go beyond the proximal end 111 or 121 of the supporting beam 11 or 12 along which it is fixed free in translation. Similarly, each rod 171 can be free to rotate around its axis, so that, by rotations of the rod, the locking bar 172 associated with it can successively be folded to pass through the access door to the lodge, then deployed on the other side of the access door to be put under tension and block a movement, at least of withdrawal, of the handling device 1 relative to the lodge.These characteristics of the 17 barrier locking system can be used to give a certain compactness to the handling device 1, a compactness that is particularly appreciated when it comes to moving it on site or storing it.

[0065] As particularly illustrated in [Fig. 1], at least one, preferably each, supporting beam 11 and 12 can take the form of a U-shaped profile configured to guide the translational movement of the electrical device on its rollers. The bottom of the U-shaped profile is obviously preferably oriented downwards.

[0066] Furthermore, at least one, preferably each, load-bearing beam 11 and 12 may be made of a material and have dimensions and a shape suitable for allowing a maximum deflection under load of the electrical device less than 1 / 300th

[0067] Advantageously, the handling device 1 can further include a two-dimensional spirit level 18, arranged preferably in a substantially central manner on the first 13 of the two cross members 13 and 14 which mechanically holds the two supporting beams 11 and 12 together by their distal ends 112 and 122, as particularly illustrated in Figures 1, 2 and 5. The handling device 1 thus offers easy positioning.

[0068] It follows from the above that the handling device 1 can have a weight approximately equal to 100 kg, preferably less than 150 kg, and / or minimum dimensions (because in a retracted configuration) preferably less than 1500 by 2000 mm, and preferably approximately equal to 1200 by 1500 mm. It should be noted that these dimensions are given by way of illustration and allow for addressing a large proportion of practical cases encountered, i.e., they allow for addressing the aforementioned handling problem for a wide range of electrical devices. If, however, the device has much larger dimensions and / or a much higher weight and / or a much larger center distance and / or much larger rollers, it is envisaged that the handling device will be dimensioned to meet the increased constraints then encountered.In this sense, the handling device 1 can have a weight of up to 3T or more, and / or minimum dimensions (because in a retracted configuration) of up to 3 by 3 m, while remaining advantageous in terms of functionality and / or transportability.

[0069] Furthermore, it is envisaged that the handling device 1 according to the first aspect of the invention further comprises a winch or winch fixed at least in part to at least one other element of the handling device 1, and for example fixed to the first cross member 13, and configured to facilitate the movement of the electrical device by operators from a loaded configuration of the handling device 1 towards the booth, or from an unloaded configuration of the handling device outside the booth. An anchor point, or more particularly a pulley, being optionally fixed to a wall of the booth to cooperate with the winch or winch.

[0070] The proposed handling device at least improves the protection of operators and the equipment being handled. More specifically, its stability minimizes the risk of falls or accidents. Furthermore, the proposed handling device minimizes the time required to handle the equipment. Another advantage of the proposed handling device is its portability, particularly due to its compact size and / or relatively low weight.

[0071] The invention is not limited to the embodiment described above and extends to all embodiments covered by the invention.

Claims

Demands

1. A handling device (1) for an electrical device, such as an electrical transformer, to be extracted from or inserted into a housing respectively, the housing comprising a slab raised above the level of the ground surrounding the housing, the handling device comprising: • two load-bearing beams (11 and 12) intended to rest, each at a so-called proximal end (111 and 121), on the slab of the lodge at the level of an access door to the lodge, respectively, • two cross members (13 and 14) each mechanically connecting the two supporting beams (11 and 12) so as to keep them substantially parallel to each other with a determined center distance (1112) corresponding to a gap between front rollers and / or between rear rollers of the electrical device and on which the electrical device is configured to be moved at least from front to back and vice versa, • an elevation control system (15), relative to the level of the lodge slab, of each of the so-called distal ends (112 and 122) of the two supporting beams (11 and 12), the elevation control being carried out relative to the ground level up to at least the level of the lodge slab, to bring the two supporting beams (11 and 12) substantially to the horizontal, so that, during the extraction or introduction of the electrical device from or into the box respectively, the supporting beams (11 and 12) can receive the load represented by the electrical device, allow the electrical device to be rolled on its rollers in a substantially horizontal direction, and allow, after extraction or before introduction, the electrical device to be supported outside the box, substantially horizontally and at the level of the box slab, so that the electrical device can be lifted into place by crane.

2. Handling device (1) according to the preceding claim, further comprising an adjustment and locking system (16) for the center distance (1112) between the two supporting beams (11 and 12).

3. Handling device (1) according to the preceding claim, wherein, the two crossbeams (13 and 14) being mechanically connected to the two supporting beams (11 and 12) so as to be substantially perpendicular to them, the adjustment and locking system (16) of the center distance (1112) between the two supporting beams (11 and 12) comprises at least: • two bores (161 and 162) of substantially oblong shape made in each of the two crossbeams (13 and 14) along a longitudinal direction of each crossbeam, and • two fixing bolts (163 and 164) of a sliding of each of the two supporting beams (11 and 12) in each of the bores (161 and 162).

4. Handling device (1) according to any one of the two preceding claims, wherein, the two crossbeams (13 and 14) being mechanically connected to the two supporting beams (11 and 12) so as to be substantially perpendicular to them, the adjustment and locking system (16) of the center distance (1112) between the two supporting beams (11 and 12) comprises at least, on each upper surface of the two crossbeams (13 and 14), a series of markers defining two by two typical center distance lengths for different electrical devices.

5. A handling device (1) according to any one of the preceding claims, wherein the lifting control system (15) comprises at least, at each end (131 and 132) of a first (13) of the two crossbeams (13 and 14) which mechanically hold the two supporting beams (11 and 12) together by their distal ends (112 and 122), a threaded rod (151) passing substantially perpendicularly through the first crossbeam (13), a first adjusting bolt (153) for the height of the considered end (131 or 132) of the first crossbeam (13), a counterbolt (154) located opposite the adjusting bolt (153) relative to the first crossbeam (13), a first so-called upper end (1511) of each threaded rod (151) being fixed to a fixed bolt (152) intended to cooperate with a crank (156), preferably removable,of the handling device (1) and configured to be able to rotate each threaded rod (151) about its axis, and a second, so-called lower end (1512) of each threaded rod (151) being fixed to a foot (155) of the handling device (1).

6. Handling device (1) according to the preceding claim, in in which each foot (155) is mechanically linked to the second so-called lower end (1512) of the corresponding threaded rod (151) by a spherical connection.

7. Handling device (1) according to any one of the preceding claims, further comprising a locking system (17) in position of the handling device relative to the door frame of the access to the lodge.

8. A handling device (1) according to the preceding claim, wherein the locking system (17) comprises, for each of the supporting beams (11 and 12), a rod (171) fixed free to translate along the corresponding supporting beam and free to rotate about its axis, and a locking bar (172) fixed substantially perpendicularly to a proximal end (1711) of the rod (171), each rod (171) being of a length sufficient to allow it to extend beyond the proximal end (111 or 121) of the supporting beam (11 or 12) along which it is fixed free to translate, and each rod (171) being free to rotate about its axis, so that, by rotations of the rod, the associated locking bar (172) can successively be folded to pass through the access door to the booth, and then extended on the other side of the access door to be tensioned and block a movement, at least a withdrawal,of the handling device (1) relative to the booth.

9. Handling device (1) according to any one of the preceding claims wherein the so-called proximal ends (111 and 121) of the two supporting beams (11 and 12) protrude relative to a second (14) of the two cross members (13 and 14) which mechanically holds the two supporting beams (11 and 12) together by their proximal ends (111 and 121), so that its proximal ends (111 and 121) can rest on the slab of the lodge and so that the second cross member (14) rests on a lateral edge of the slab at the level of the access door to the lodge.

10. Handling device (1) according to any one of the preceding claims, wherein at least one, preferably each, supporting beam (11 and 12) takes the form of a U-shaped profile configured to guide the translational movement of the electrical device on its rollers.

11. A handling device (1) according to any one of the preceding claims, wherein at least one, preferably each, beam load-bearing (11 and 12) is based on a material and takes dimensions and a shape suitable for allowing a maximum deflection of deformation under load of the electrical device less than l / 300th.

12. A handling device (1) according to any one of the preceding claims, further comprising a two-dimensional level control system (18), such as a two-dimensional spirit level, arranged preferably substantially centrally on the first (13) of the two crossbeams (13 and 14) which mechanically holds the two supporting beams (11 and 12) together by their distal ends (112 and 122).

13. Handling device (1) according to any one of the preceding claims, further comprising a winch or winch fixed at least in part to at least one other element of the handling device (1), and for example fixed to the first cross member (13) of the handling device (1), and configured to facilitate the movement of the electrical device by operators from a loaded configuration of the handling device (1) and / or from an unloaded configuration of the handling device (1).

14. Use of a handling device (1) according to any one of the preceding claims, for extracting or introducing an electrical device, such as an electrical transformer, from or into a booth respectively, the booth comprising a slab raised above the level of the ground surrounding the booth.

Images