EP2370337B1 - Modular weighting elements - Google Patents

Description

The present invention generally relates to heavy modular elements.
The invention more particularly relates to a heavy modular element intended to be assembled with at least one other modular element to form a weighting bar, called an ingot, for example to produce an elevator counterweight, said modular element being in the form of an elongated body generally parallelepipedic. The invention also relates to a weighting bar, a counterweight formed by superimposing such weighting bars and an assembly comprising a frame carrying such a counterweight.

In general, an elevator or hoist is driven in displacement using an electric motor and said elevator is connected by means of pulleys to a counterweight. Said counterbalance counterbalances the weight of the elevator and thus reduces the effort required for the motor to drive said elevator in displacement.

Modular elements assembled in pairs by a longitudinal edge are known from the state of the art to form landing bars which are stacked so as to form such an elevator counterweight. However, it is observed that the modular elements forming the bars are sometimes deformed by buckling due to manufacturing defects over long lengths. Indeed, the longer the modular elements are, the more they deform. The face of application of one bar to another is no longer plane which generates displacements of bars relative to each other when the counterweight is moved vertically due to the movement of the elevator. This results in vibrations of the bars between them and a high noise level.

The document CN 101,077,753 describes a counterweight with modular elements having ribbed bars and a concrete shell.

In addition such modular elements assembled by a longitudinal edge are difficult to produce by automated molding and / or on a molding machine because of the long length of these elements. Indeed, in this case, a mold of the length of the bar is necessary, which generates significant manufacturing costs.

The present invention aims to propose heavy modular elements for which the risk of deformation, in particular by buckling, is reduced.

Another object of the invention is to provide heavy modular elements that can be manufactured by molding in an automated manner and with a reduced cost.

Another object of the invention is to allow the realization of a weighting bar and / or a counterweight using a single type of modular element, which is easy to handle and assemble with another identical element.

Another object of the invention is to provide a counterweight, in particular for a lift, for which the vibrations of the modular elements component are reduced.

For this purpose, the invention relates to a heavy modular element intended to be assembled with at least one other modular element to form a weighting bar, called ingot, for example to make a counterweight lift and / or elevator, said modular element in the form of an elongated body generally parallelepipedic,
characterized in that said modular element, said hermaphrodite, comprises at least two assembly members, one male and the other female of complementary shape, said assembly members being disposed on said body so as to allow assembly of said modular element with at least one other modular element preferably identical in aligned position in the extension of one another, by cooperation of at least the male or female member of said element with the female member, or respectively male, said other adjacent modular element.

Such a design of said modular element equipped with assembly means makes it possible to assemble the modular elements in end-to-end arrangement to reconstitute said bar. Said bar may in particular be reconstituted at from two elements of length close to half of that of the bar, generally slightly greater than half of said bar for a preferably interleaved bonding connection of said elements together.

Thus, the length of the modular elements is reduced compared to that of the elements of the state of the art which were assembled two by two by a longitudinal edge. The decrease in length reduces the phenomenon of buckling of the element. As a result, the bars thus obtained are deformed less. Bars stacked on top of each other to form the counterweight therefore remain applied to each other without clashing. The vibrations of the bars are thus reduced when the elevator moves.

In addition, the design of reduced length modular elements makes it possible to use a mold of equally reduced length compared to the molds of the state of the art, which reduces the production costs of the modular elements.

Thanks to male and female members of complementary shape located on the same modular element, such a modular element can be assembled to any other identical modular element. It is thus sufficient to design a single type of modular element to reconstitute each bar by assembling end-to-end such elements.

According to an advantageous characteristic of the invention, said male and female assembly members are arranged at or near a same end of said body, said assembly end.

Thus, the end-to-end assembly of two elements is done by cooperation of at least the male member, respectively female, of said element with the female member, respectively male, said other adjacent identical modular element.

The presence of two assembly members at the assembly area of a modular element with another identical modular element prevents the rotation of the elements relative to each other in the assembled state.

The arrangement of the connecting members at one end of the body of the element facilitates its assembly to another element and makes it possible to reduce the length of said element necessary for reconstitution of the bar by assembling several end-to-end elements. end.

The positions of said at least two assembly members define a straight line preferably transverse to the longitudinal direction of said element.

According to an advantageous characteristic of the invention, the assembly members of said element are designed to allow assembly / disassembly of two modular elements preferably identical from above.

In this case, the connection is preferably an interlocking connection overlapping the ends of said elements. This assembly is preferably a half-timber type assembly, each element being supported in the vicinity of its end to close this half-thick end portion.

According to an advantageous characteristic of the invention, said element is provided with two male members and two female members of complementary shape, preferably located at or near a same end of said body, said assembly end.

According to an advantageous characteristic of the invention, the or each male member is formed by a stud and the or each female member is formed by an orifice passing through the upper and lower faces of said member.

According to an advantageous characteristic of the invention, the or at least one of said pads is carried by at least one of the ends of the element, the at least one pad being made in the thickness of the body on a height corresponding preferably to the half-thickness of the body of said element extending in a direction orthogonal to the longitudinal direction of said element and in that the or at least one of the through openings is formed in the remaining height of said portion end of the element that carries the studs.

According to an advantageous characteristic of the invention, the length of said element is less than 650 mm.

According to an advantageous characteristic of the invention, the thickness of said element is between 20 mm and 100 mm, preferably between 24 mm and 95 mm.

According to an advantageous characteristic of the invention, said element is made of cast iron.

The invention also relates to a counterweight made by superimposing a plurality of weighting bars, called ingots, each formed by end-to-end assembly of at least two modular elements as described above.

The invention also relates to a heavy assembly, in particular for an elevator, formed of a counterweight and a chassis carrying said counterweight, said chassis being formed of a frame whose each upright includes a groove open towards the inside of the frame, forming counterweight introduction rail, characterized in that said counterweight is as described above and in that the end of each modular element, opposite its assembly area with another element preferably identical, present a portion forming insertion pin in the groove of one of the frame uprights and for guiding said modular element along said groove.

The invention furthermore relates to a heavy modular element intended to be assembled with at least one other preferably similar modular element to form a bar, called an ingot, for example to make an elevator and / or elevator counterweight, said modular element in the form of an elongated generally parallelepipedic body, characterized in that said modular element is provided with male and / or female type assembly means adapted to cooperate with complementary assembly means provided on said other element modular so as to allow an assembly of the two modular elements in aligned position.

Finally, the invention relates to a ballast bar formed by butt assembly of at least two elements as described above.

Alternatively, a ballast bar may be formed by assembling at least two identical elements forming the ends of the bar, said two identical elements being interconnected by one or more other elements, identical or not, forming connecting pieces between said two end members.

• la figure 1 est une vue schématique d'un ascenseur équipé d'un contrepoids ;
• la figure 2 est une vue en perspective de deux éléments modulaires selon l'invention à assembler, les organes d'assemblage d'un élément étant disposés en regard des organes d'assemblage de l'autre élément ;
• la figure 3 est une vue des deux éléments modulaires de la figure 2 avant assemblage ;
• la figure 4 est une vue des deux éléments modulaires de la figure 3 à l'état assemblé formant une barre de lestage ;
• la figure 5 est une vue du châssis à l'intérieur duquel sont introduit les éléments modulaires selon l'invention pour former un empilement de barres de lestage.

The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings in which:

• the figure 1 is a schematic view of an elevator equipped with a counterweight;
• the figure 2 is a perspective view of two modular elements according to the invention to be assembled, the assembly members of one element being arranged facing the assembly members of the other element;
• the figure 3 is a view of the two modular elements of the figure 2 before assembly;
• the figure 4 is a view of the two modular elements of the figure 3 in the assembled state forming a ballast bar;
• the figure 5 is a view of the frame inside which are introduced the modular elements according to the invention to form a stack of weight bars.

Referring to the figures and as recalled above, the invention relates to a weighing modular element 1 intended to be assembled with at least one other modular element 1 to form a bar 10 of ballasting, called ingot or pig. According to a preferred application, illustrated in figures 1 and 5 said bars are stacked to form the counterweight 100 of an elevator 5. Said modular element 1 is in the form of a generally parallelepipedal elongated body 6. Preferably, said element is made by casting, cast iron. The production of a cast iron element makes it possible to obtain modular elements having a high density and thus to limit the bulk of the counterweight formed by means of said elements. Alternatively, said element may be of another material, for example steel or concrete.

Characteristically to the invention and as illustrated in FIG. figure 2 said modular element 1, called hermaphrodite, comprises at least two assembly members, one male 2 and the other female 3 of complementary shape. Said connecting members 2, 3 are disposed on said body 6 so as to allow assembly of said modular element 1 with at least one other identical modular element 1 in aligned position in the extension of one another ( Figures 3 and 4 ). Said end-to-end assembly is made by cooperation of at least the male or female member of said element with the female or male member of said other identical identical modular element.

Preferably, said male and female assembly members 2, 3 are arranged at or near a same end of said body, said assembly end 1A. The assembly members 2, 3 of said element are designed to allow assembly / disassembly of two identical modular elements 1 from above.

In the example illustrated in the figures, said modular element is provided with two male members 2 and two female members 3 of complementary shape located at or near the assembly end 1A of said body.

Each male member 2 is formed by a stud and each female member 3 is formed by an orifice passing through the upper and lower faces, also called the top and bottom faces of said modular element 1.

Each stud 2 is made in the half-thickness of the body 6 of said element 1 extending in a direction orthogonal to the longitudinal direction of said element 1. Each through opening 3 is formed through the remaining half-thickness of the portion of end of the element which carries the studs 2. These half-thicknesses are formed at one end of said body, beyond a shoulder of said body.

Such a design of the studs and through openings allows a head-to-tail assembly of two modular elements, type mid-wood. One of the elements is inverted and returned. The assembly end of the returned element can thus be assembled at the corresponding end of the unreturned element, from above, so that each male member of an element fits into the corresponding female member. of the other element ( Figures 3 and 4 ).

The presence of orfice (s) through (s) also allows to easily suspend each modular element, which facilitates shot blasting operations. Alternatively, it can be provided that at least one or each female member is formed by a blind hole.

A dovetail assembly could also have been considered. In this case, the modular element comprises a tail swallow tail and a notch of complementary shape forming mortise.

The length of said modular element is less than 650 mm. A length of less than 650 mm significantly reduces the risk of buckling of said elements and allows to manufacture them according to automated manufacturing processes.

The thickness of said element is between 20 mm and 100 mm, preferably between 24 mm and 95 mm. Preferably, the thickness of each element is doubled with respect to the state of the art which makes it possible to form a counterweight with a number of ingots identical to that of the state of the art so that the number of manipulations does not exceed is not increased.

Advantageously, the weight of said element is between 10 kg and several tens of kg, for example 25 kg.

As recalled above, each weight bar, or ingot, can be stacked on another weight bar to form an elevator counterweight.

In the example shown in figures 1 and 5 , said counterweight is an elevator counterweight housed in a frame 7. Said frame 7 is formed of a frame whose each upright includes a groove 8 open towards the inside of the frame, forming a counterweight insertion rail.

The end of each modular element 1, opposed to its end-to-end assembly zone with another identical element, has a portion 4 forming insertion pin in the groove 8 of one of the uprights of the frame 7. This part 4 allows the guiding of said modular element 1 along said groove 8.

As illustrated in figure 5 , the design of each bar in the form of two modular elements to be assembled together makes it possible to easily introduce each modular element into the chassis by laterally introducing the guide portion or tenon of said element into the groove 8 of the corresponding upright. Indeed, such a lateral introduction is allowed because the width of the frame is substantially equal to that of a bar and therefore much greater than that of a modular element. It is thus possible to introduce the modular elements one after the other in the chassis. Each modular element introduced into the groove of an amount comes to fit over the top with the modular element located at the same level and introduced into the groove of the opposite amount.

By way of example, for a frame of dimension 1 160 mm × 120 mm, 40 modular elements are used for its filling, each having: a length close to 610 mm, a thickness close to 50 mm, a width close to 120 mm, so that the weight of the element is of the order of 1000 kg.

Claims (10)

1. A modular weighting element (1) intended to be connected to at least one other modular element (1) to form a ballast bar (10), called an ingot, for example to make a lift and/or load-elevator counterweight, said modular element (1) being in the form of an elongated, generally-parallelepiped body (6),
   characterized in that said modular element (1), referred to as hermaphroditic, includes at least two connecting parts, one male (2) and the other female (3) of complementary shape, said connecting parts (2, 3) being arranged on said body (6) in such a way to allow said modular element (1) to be connected to at least one other, preferably similar modular element (1), in an aligned position, in the continuation of one another, through cooperation of at least the male part, or female part respectively, of said element with the female part, or male part respectively, of said other, adjacent modular element.
2. A modular element according to claim 1, characterized in that said male and female connecting parts (2, 3) are arranged at, or near, a same end of said body, referred to as the connecting end (1 A).
3. A modular element according to one of the preceding claims, characterized in that the connecting parts (2, 3) of said element are adapted to allow connection/disconnection of two modular elements (1), preferably similar to each other, from the top thereof.
4. A modular element according to one of the preceding claims, characterized in that it is provided with two male parts (2) and two female parts (3) of complementary shape, preferably located at, or near, a same end of said body, referred to as the connecting end.
5. A modular element according to one of the preceding claims, characterized in that the or each male part (2) is formed by a stud and the or each female part (3) is formed by an orifice through the upper and lower faces of said element (1).
6. A modular element according to claim 5, characterized in that said or at least one of said studs is carried by at least one of the ends of the element, the or said at least one stud (2) being made in the thickness of the body (6) over a height corresponding preferably to half the thickness of the body (6) of said element (1) extending along a direction orthogonal to the longitudinal direction of said element (4) and in that the or at least one of the through-openings (3) is arranged in the remaining height of said end portion of the element that carries the studs (2).
7. A modular element according to one of the preceding claims, characterized in that the length of said element is lower than 650 mm and the thickness of said element is between 20 mm and 100 mm, preferably between 24 mm and 95 mm.
8. A modular element according to one of the preceding claims, characterized in that said element is made of cast iron.
9. A counterweight (100) made by superposition of a plurality of ballast bars, called ingots, each formed by connecting end-to-end at least two modular elements according to one of the preceding claims.
10. A weighting assembly, in particular for a lift, formed of a counterweight (100) and a framework (7) carrying said counterweight (100), said framework (7) being formed of a frame, each upright of which comprises a groove (8) open towards the inside of the frame, forming a rail for introduction of the counterweight, characterized in that said counterweight is according to claim 9, and in that the end of each modular element (1), on the opposite side from its area of connection with another, preferably similar element, has a tenon portion (4) for introduction into the groove of one of the uprights of the framework (7) and allowing said modular element (1) to be guided along said groove (8).

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