Mobile lifting device for a building and assembly of a carriage transporting such a device

Abstract

The invention relates to a mobile lifting device for a building, wherein the device includes a mast (1) comprising a boom (11) extending between a first end and a second end, a turntable (4) and two stays (12), the first end of the boom (11) is connected to the turntable (4) and the second end includes a hoist (5) suitable for lifting and moving loads, each stay extends from the turntable (4) to the second end of the boom (11); the turntable (4) is connected to an apron (22) of a bracket (2), the bracket (2) being configured to be rigidly connected to a building by a pulley block. The device comprises two modes: a slab nose mode in which the bracket (2) is rigidly connected to a slab nose (100) of a building, and a parapet mode in which the bracket (2) is rigidly connected to a parapet (105) of a building.

Description

Mobile lifting device for a building and assembly of a trolley carrying such a device Technical field of the invention

[0001] The present invention relates to a mobile lifting device for a building and a trolley assembly carrying such a device. It applies, in particular, to the handling of heavy loads in building construction.

[0002] Mobility constraints restrict mobile lifting equipment such as truck cranes and telescopic handlers to loads of less than 250 kg. These movements generate significant economic and environmental costs, while requiring a significant allocation of time for the professionals in charge, particularly in difficult-to-access environments such as city centers and metropolitan areas.

[0003] The physical wear and tear in the construction sector, mainly accentuated by the transport of loads weighing less than 30 kg, raises the imperative need to reduce the distribution of small equipment and loads on the different levels of buildings under construction. This requirement aims to avoid the administrative overload and the workload associated with the movement of mobile lifting equipment.

[0004] In a context of progressive decline of energy resources, internationalization and standardization of construction rules, new opportunities for creation are arising.

[0005] The current state of the art uses a jib crane fixed to a structural base, which includes a weight compensation generally equivalent to the load to be lifted. This approach may also require anchoring to the building, an action that frequently leads to irreversible consequences or the need for additional labor. These devices are expensive and require considerable labor to achieve their stable position, given the multiplicity of their components, often weighing around 25 kg each (in accordance with occupational risk prevention regulations). In addition, a counterweight of around 200 kg is generally required for similar machines.It should be noted that a design rule states: "The sum of the heaviest load to be lifted and the accessories used must always remain less than or equal to the Maximum Working Load (WLL)", which highlights the notion of mobility and transportability.

[0006] There are patent publications with similar characteristics such as FR 765944, US5265742 and US 2012 / 168251. However, none of these documents present all the advantages of the present invention. Presentation of the invention

[0007] The present invention aims to overcome these drawbacks with a completely innovative approach.

[0008] More specifically, the invention aims to provide a lifting mechanism powered exclusively by grid electricity, fast and efficient, taking advantage of the benefits of a solid and coherent construction structure. This concept is positioned as a response to future challenges in the industry.

[0009] In particular, one objective of the invention is to provide such a technique making it possible to do without any other ballast system.

[0010] An objective of the invention is to provide such a technique, which can be easily adapted to existing constructions.

[0011] These objectives, as well as others which will appear subsequently, are achieved, according to a first aspect, using a mobile lifting device for a building, the device comprises a mast comprising a boom extending between a first end and a second end, an orientation table and two guys, the first end of the boom is connected to the orientation table and the second end comprises a hoist adapted to lift and move loads, each guy extends from the orientation table to the second end of the boom;the orientation table is connected to an apron of a stirrup, said stirrup being configured to be secured to a building by the action of a pulley, remarkable in that it comprises two modes: a slab nose mode in which the stirrup is secured to a slab nose of a building, in this mode the slab nose of the building is between the apron of the stirrup and a shoe sole of the jaw shoe, the shoe sole of the jaw shoe is movable in translation by a shoe arm, the action of the pulley moves the shoe sole of the jaw shoe which comes to exert a pressure force on the slab nose locking the position of the device;an acroterion mode in which the stirrup is secured to an acroterion of a building, in this mode the acroterion of the building is between a sliding shoe and an acroterion sole secured to the stirrup, the sliding shoe comprises a sole of the sliding shoe positioned partly on the deck and movable in translation by a rectilinear guide of the deck, the action of the block moves the sole of the sliding shoe on the rectilinear guide which comes to exert a pressure force on the acroterion locking the position of the device.;

[0012] Thanks to these features, the building attachment clamp (consisting of stirrups and jaws) eliminates any need for counterweights, anchors or superfluous components. This design gives the clamp total mobility, allowing it to follow the different phases of construction progress (such as the installation of bituminous waterproofing, coatings, etc.). Its relevance continues until the building is handed over to the client, and even during its dismantling.

[0013] A key feature of this machine is its truly mobile nature. This is achieved with the help of its positioning trolley. The design of this trolley, equipped with three-wheel hubs with automatic braking system, simplifies handling, climbing building floors, and positioning at docking areas.

[0014] This design is economical and maintains comfort at work.

[0015] The simplicity of reservation is also a major advantage. The unique standardized reservation board supplied with the device allows concrete design offices to integrate loads into their designs. This integration ensures continuous use of the device until its dismantling, thus reinforcing its durability and practicality.

[0016] The invention is advantageously implemented according to the embodiments and variants set out below, which are to be considered individually or in any technically effective combination.

[0017] In one embodiment, the first end of the boom includes a masthead supporting the hoist and is connected by a pivot link to the yoke.

[0018] This provides greater flexibility and versatility when lifting and moving loads. This configuration allows the hoist to pivot around the bracket, which provides several significant benefits:

[0019] Wide range of motion: The pivot connection between the mast and the yoke allows the hoist to move in an arc around the yoke. This provides a wide range of motion that allows for precise lifting, moving, and positioning of loads in tight or hard-to-reach spaces.

[0020] Positioning Accuracy: The ability to pivot allows for precise positioning of the load, which is essential when installing or handling loads in delicate locations where accuracy is paramount.

[0021] The first end of the boom has a masthead supporting the hoist by a pivot connection.

[0022] Adaptability to lifting angles: Thanks to the ability to pivot, the hoist can be adjusted to different angles relative to the load to be lifted. This is particularly useful when it is necessary to lift loads in unconventional positions or orientations. Reduced stress: When a load is lifted, the stresses and forces exerted on the hoist and mast structure are better distributed thanks to the pivot connection. This helps extend the life of the equipment by reducing wear and excessive stress on the components.

[0023] In one embodiment, the shoe sole has a clamping position and a transport position and the sliding shoe sole has a clamping position and a transport position, the clamping position corresponds to holding the device on the building and the transport position corresponds to a gap with the deck configured for insertion of the device on the parts of the building.

[0024] In one embodiment, in the acroterion mode the device comprises a lateral stabilizer, said lateral stabilizer comprises a press which bears against the acroterion and at least one lateral pin is used to position the lateral stabilizer 8 on the device by making it integral.

[0025] In one embodiment, in the acroterion mode the device comprises a rear stabilizer, said rear stabilizer is integral with the device and comprises a stabilizer foot which rests on the ground of the building near the acroterion.

[0026] In one embodiment, the rear stabilizer comprises a stabilizer wheel which is connected by a cable to the foot and adapted to adjust the height of the foot relative to the device.

[0027] According to a second aspect, the present invention relates to an assembly of a trolley and a mobile lifting device for a building, said trolley comprises a main frame supporting the device, and comprises on each side, two wheels positioned in parallel as well as a third wheel located slightly raised relative to the level of the two wheels, the third wheel contributes to the maneuverability of the trolley and is configured to pivot easily around a central point and adapted to go up or down stairs.

[0028] The advantages, aims and particular characteristics of this assembly being similar to those of the device which is the subject of the present invention, they are not recalled here.

[0029] A three-wheeled cart has several advantages that make it an attractive choice in many situations. Here are some of the key benefits of a three-wheeled cart: Improved maneuverability: Three-wheeled carts are generally more agile and easy to maneuver, especially in tight or congested spaces. The three-wheel design allows for easier turning and smooth movement around obstacles. Space saving: Three-wheeled carts are more compact than their four-wheeled counterparts, making them ideal for environments where space is limited. They can be used effectively in narrow aisles, warehouses, or cramped storage areas. Energy saving: Due to their lighter design and better maneuverability, three-wheeled carts may require less effort to move, which can result in energy savings and reduced operator fatigue. Brief description of the figures

[0030] Other advantages, aims and characteristics of the present invention emerge from the following description given, for explanatory and non-limiting purposes, with reference to the appended drawings, in which:

[0031] It represents the assembly of the device ready for lifting on a slab nose in profile view;

[0032] It represents the assembly of the device ready for lifting on a slab nose in top view;

[0033] It represents the mounting of the device ready for lifting on a parapet in profile view;

[0034] It represents the assembly of the device ready for lifting on a parapet in front view;

[0035] It represents the mounting of the device ready for lifting on a parapet seen from above;

[0036] Represents the operation of the stirrup and the jaw shoe in slab nose mode;

[0037] It represents the operation of the stirrup and the sliding shoe in acroterion mode;

[0038] It represents the installation of the stirrup and the jaw shoe in slab nose mode;

[0039] It represents the installation of the stirrup and the sliding shoe in acroterion mode;

[0040] It represents the implementation of the different possibilities of the device;

[0041] Shows another view of the operation of the stirrup and jaw shoe in slab nose mode;

[0042] It represents a partially exploded view of the stirrup and jaw shoe in slab nose mode;

[0043] It represents a partially exploded view of the stirrup and the sliding shoe in acroterion mode;

[0044] This represents another view of the operation of the stirrup and sliding shoe in acroterion mode.

[0045] The present invention is primarily intended for construction workers, and more specifically for those in the finishing trades, working on multi-story buildings. In these contexts, the crane used by masons is generally made available to other trades such as carpenters and roofers. However, once the structural work phase is completed, the crane is dismantled. Craftsmen will be able to easily transport their materials and equipment to their workplace, thus saving time, especially if the quantity of materials requires several lifting operations.

[0046] The device takes about an hour to set up per operator, and another hour to retract. It will weigh about 80 kg on three round trips. If a task requires five round trips with two operators carrying 25 kg loads, the benefits will already be evident.

[0047] The next users of this system are site managers, rental services, and companies involved after the structural work phase. Installing the system on site, with a prorated cost included in the budget, will be an undeniable asset for the efficient completion of their projects, especially when these projects are located in hard-to-reach areas. In addition, this approach will contribute to obtaining certifications such as the BBCA (Low Carbon Building) label.

[0048] Lamontrele mounting the device ready for lifting on a slab nose in profile view.

[0049] This figure shows the slab nose 100 and the device mounted on it. The device has four main parts: the first is the mast 1, the second is the stirrup 2, the third is the jaw shoe 3 and the fourth is the orientation table 4.

[0050] Mast 1 has a boom 11 and shrouds 12.

[0051] The boom 11 extending between a first end and a second end. The first end of the boom 11 is connected to the orientation table 4 and the second end comprises a hoist 5. The orientation table comprises a slewing motor 42 with a slewing ring 41.

[0052] The second end of the boom 11 has a shroud pivot 15 at the masthead 13. The second end of the boom 11 is attached to the tackle 5 which is connected to the boom 11 by a masthead pin 14. There are also other pins: shroud pin 16 and boom pin 17. The pins serve to hold the elements relative to each other.

[0053] The slab nose 100 of the building is between the deck 22 of the stirrup 2 and the shoe sole 33 of the jaw shoe 3.

[0054] The stirrup 2 is configured to be secured to a building by the action of a pulley block via a pulley block 23. The pulley block 21 serves as a connection between the orientation table 4 and the jaw shoe 3.

[0055] The jaw shoe 3 is connected by a rear shoe arm 31 and a front shoe arm 32. Each arm is held by a stirrup pin 24.

[0056] One of the arms is connected to the block. The shoe sole 33 is movable and performs a transverse movement.

[0057] The shoe sole 33 has a clamping position and a transport position.

[0058] The clamping position corresponds to holding the device on the building and the transport position corresponds to the spacing with the apron 22 to allow the insertion of the device on the parts of the building.

[0059] Naturally, the invention is described in the foregoing by way of example. It is understood that those skilled in the art are able to carry out different variant embodiments of the invention without departing from the scope of the invention.

[0060] Lamontrele mounting the device ready for lifting on a slab nose in top view.

[0061] The slab nose is visible, with the apron 22 of the stirrup 2. An arrow 11 is shown allowing the orientation table 4 to show the possibility of stacking with the rotation of the orientation table.

[0062] Lamontrele mounting the device ready for lifting on a parapet in profile view.

[0063] This figure shows elements of: the elements of mast 1, and stirrup 2. Mast 1 is also shown with dotted lines to show another position.

[0064] The apron 22 of the stirrup 2 is placed on the acroterion 105.

[0065] The stirrup 2 is secured to the acroterion 105 of the building. In this mode, the acroterion of the building is between a sliding shoe 7 and an acroterion sole 6 secured to the stirrup 2. The acroterion sole 6 comprises at least one sole pin 62 making it secured to the stirrup 2.

[0066] The sliding shoe 7 comprises a sole 71 of the sliding shoe 7 positioned partly on the apron 22 and movable in translation by a rectilinear guide of the apron 22. The action of the block moves the sole 71 of the sliding shoe 7 on the rectilinear guide which comes to exert a pressure force on the acroterion 105 locking the position of the device.

[0067] The device comprises a lateral stabilizer 8 exerting an additional holding force on the acroterion 105. The lateral stabilizer 8 comprises a press bearing against the acroterion 105 and at least one lateral pin serves to position the lateral stabilizer 8 on the device and make it integral with the latter. In one embodiment, there are two lateral pins.

[0068] The illustration shows the mounting of the device ready for lifting on a parapet in a front view allowing a better view of the lateral stabilizer 8. The lateral stabilizer 8 has rods that hold a press at a distance. The press is configured to clamp the parapet 105.

[0069] The press is offset from the device, which provides greater stability for the assembly. The distance from the press is approximately equal to the width of the device.

[0070] The watch shows the assembly of the device ready for lifting on a parapet in top view and shows an arrow 11 which represents the path of the load towards the stacking area.

[0071] This figure shows the elements of the press 81 of the lateral stabilizer 8.

[0072] The rear stabilizer 9 is also visible. The rear stabilizer 9 comprises a rod with a stabilizer foot 92 which is placed on the ground by a stabilizer wheel which allows the height of the stabilizer foot 92 to be adjusted. The rear stabilizer 9 allows even heavier loads to be transported by the hoist 5.

[0073] The figure shows the operation of the stirrup and the jaw shoe in slab nose mode. This figure includes some of the elements described above. This figure shows two positions of the shoe sole 33 of the jaw shoe 3: the clamping position and a transport position.

[0074] In the transport position the distance between the apron 22 and the stirrup 2 is the greatest and allows the insertion of the device on a slab nose.

[0075] In the clamping position, the distance between the apron 22 of the stirrup 2 corresponds to the thickness of the slab nose.

[0076] The flywheel of the block 23 turns the screw 27 which raises and lowers the pinion 25 releasing or tensioning the chain 26 which is attached to one of the arms of the device which has the effect of raising or lowering the jaw shoe 3 with very great force.

[0077] Lamontre shows the operation of the stirrup and the sliding shoe in acroterion mode. This figure includes some of the elements described above.

[0078] The acroterion sole 6 is in a vertical position and is held by sole pins 62.

[0079] The flywheel of the pulley block 23 turns the screw 27 which raises and lowers the pinion 25 releasing or tensioning the chain 26 which is attached to the sliding shoe 7 which has the effect of moving the latter forward or backward with very great force.

[0080] The sole 71 of the sliding shoe 7 is guided by a rectilinear guide of the apron 22 and by means of slider 72. The chain 26 is connected to the sliding shoe 7.

[0081] A spring 73 allows the sole 71 to follow the rectilinear guide. This spring facilitates implementation.

[0082] In this figure two positions of the sole 71 are shown. One position where the distance is proximal to the acroterion sole 6 and one position where the distance is distal to the acroterion sole 6. On the right of the figure a section is shown to appreciate the sole 71 in front view.

[0083] Lamontrela installation of the stirrup and the jaw shoe in slab nose mode. This figure includes the elements described above.

[0084] A trolley is used to transport the device and consists of a main frame supporting the device. The trolley has two wheels on each side positioned parallel to each other and a third wheel located slightly above the level of the two wheels. The third wheel contributes to the trolley's maneuverability and is configured to pivot easily around a central point and is suitable for climbing or descending stairs.

[0085] Using the trolley, the operator overcomes the levels and obstacles present on the construction site. Equipped with a safety harness, the operator guides the device towards the slab nose 100, i.e., the edge of the slab of the building under construction. The operator then triggers the pivot using his own weight to balance the movement and tilt the device from the trolley. The pivoting of the device puts it in the optimal position for use. Using the block handwheel, the operator tightens the jaw shoe 3 and detaches the trolley. Next, the operator assembles the mast 1 using the guy pin 16 and the jib pin 17, raises the hoist 5 with the automatic pins 14, and connects the device to the temporary electrical panel on the construction site. At this point, the device is ready to be used for lifting.

[0086] Lamontrela installation of the stirrup and the sliding shoe in acroterion mode.

[0087] This figure includes the elements described above.

[0088] The operator, equipped with a safety harness, guides the device to the parapet 105 using the trolley. He activates the oscillating mode to position the machine on the parapet 105. The operator then tightens the sliding shoe 7 using the block handwheel 23, detaches the trolley, raises the lateral stabilizer 8 as well as the rear stabilizer 9, and secures the assembly by inserting the lateral pins 82 while adjusting the supports using the stabilizer handwheels 91 and the press 81. The operator sets up the mast assembly 1 using the automatic pins 16 and 17, hoists the hoist 5 using the automatic pins 14, and connects the device to the temporary electrical panel of the construction site. At this point, the device is ready to perform the lifting.

[0089] Lamontrela puts into context the different possibilities of the device.

[0090] This figure shows that it is possible to switch from one mode to the other.

[0091] To switch from slab nose mode to acroterion mode, the operator must: remove the jaw shoes 3. The operator mounts the acroterion soles 6 and the sliding shoes 7.

[0092] To switch from acroterion mode to slab nose, the operator must: remove the acroterion soles 6 and the sliding shoes 7. The operator mounts the jaw shoes 3.

[0093] Figures 11 to 14 illustrate the different operating and assembly modes of the various elements described above.

[0094] Illustrates the first step in the transition from slab nose mode to acroterion.

[0095] Illustrates the second step for the transition from slab nose mode to acroterion.

[0096] It is emphasized that all features, as they emerge for a person skilled in the art from this description, the drawings and the attached claims, even if they have been specifically described only in relation to other specific features, both individually and in any combinations, may be combined with other features or groups of features disclosed herein, provided that this has not been expressly excluded or that technical circumstances make such combinations impossible or meaningless.

[0097] ReferencesDesignations1Mast11Jib12Shrouds13Mast head14Mast head pin15Swing pivot16Swing foot pin17Jib pin2STIRRUP21Block case22Pan girder23Block handwheel24Block pins25Sprocket26Chain27Block screw28Block nut3JAW SHOES31First shoe arm32Second shoe arm33Shoe base4ORIENTATION TABLE41Slewing ring42Rotation motor5Hoist6ACROTARY SLING BASE62Sling base pin

[0098] 7SLIDING SHOES71Sliding shoe base72Slider73Spring8SIDE STABILIZER81Press82Side pin9REAR STABILIZER91Stabilizer wheel92Stabilizer foot100SLAB NOSE105ACROTERE

Claims

Mobile lifting device for a building, the device comprises a mast (1) comprising a boom (11) extending between a first end and a second end, an orientation table (4) and two guy ropes (12), the first end of the boom (11) is connected to the orientation table (4) and the second end comprises a hoist (5) adapted to lift and move loads, each guy rope extends from the orientation table (4) to the second end of the boom (11);the orientation table (4) is connected to an apron (22) of a stirrup (2), said stirrup (2) being configured to be secured to a building by the action of a pulley, characterized in that it comprises two modes: a slab nose mode in which the stirrup (2) is secured to a slab nose (100) of a building, in this mode the slab nose of the building is between the apron (22) of the stirrup (2) and a shoe sole (33) of the jaw shoe (3), the sole (33) of the jaw shoe (3) is movable in translation by a shoe arm (31, 32), the action of the pulley moves the shoe sole (33) of the jaw shoe (3) which exerts a pressure force on the slab nose (100) locking the position of the device;an acroterion mode in which the stirrup (2) is secured to an acroterion (105) of a building, in this mode the acroterion of the building is between a sliding shoe (7) and an acroterion sole (6) secured to the stirrup (2), the sliding shoe (7) comprises a sole (71) of the sliding shoe (7) positioned partly on the deck (22) and movable in translation by a rectilinear guide of the deck (22), the action of the pulley moves the sole (71) of the sliding shoe (7) on the rectilinear guide which comes to exert a pressure force on the acroterion (105) locking the position of the device.; Device according to claim 1, in which the first end of the boom (11) comprises a mast head (13) supporting the hoist (5) and is connected by a pivot connection to the stirrup (2). Device according to claim 1, wherein the shoe sole (33) has a clamping position and a transport position and the sole (71) of the sliding shoe (7) has a clamping position and a transport position, the clamping position corresponds to holding the device on the building and the transport position corresponds to the spacing with the apron (22) configured for the insertion of the device on the parts of the building. Device according to claim 1, wherein in the acroterion mode the device comprises a lateral stabilizer (8), said lateral stabilizer (8) comprises a press (81) bearing against the acroterion (105) and at least one lateral pin is used to position the lateral stabilizer 8 on the device by making it integral. Device according to claim 1, wherein in the acroterion mode the device comprises a rear stabilizer (9), said rear stabilizer (9) is integral with the device and comprises a stabilizer foot (92) which comes to rest on the ground of the building near the acroterion (105). Device according to claim 5, wherein the rear stabilizer (9) comprises a stabilizer wheel (91) which is connected by a cable to the foot and adapted to adjust the height of the foot relative to the device. A set of a trolley and a mobile lifting device for a building according to one of the preceding claims, said trolley comprises a main frame supporting the device, and comprises on each side, two wheels positioned in parallel as well as a third wheel located slightly raised relative to the level of the two wheels, the third wheel contributes to the maneuverability of the trolley and is configured to pivot easily around a central point and adapted to go up or down stairs.

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