EP3478622A1 - Load indication device, in particular for a lifting ring - Google Patents

Load indication device, in particular for a lifting ring

Info

Publication number
EP3478622A1
EP3478622A1 EP17734712.7A EP17734712A EP3478622A1 EP 3478622 A1 EP3478622 A1 EP 3478622A1 EP 17734712 A EP17734712 A EP 17734712A EP 3478622 A1 EP3478622 A1 EP 3478622A1
Authority
EP
European Patent Office
Prior art keywords
lifting
indicator
cover
accessory
deformable member
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP17734712.7A
Other languages
German (de)
French (fr)
Inventor
Christophe LOSANGE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intelprop SA
Original Assignee
Intelprop SA
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
Application filed by Intelprop SA filed Critical Intelprop SA
Publication of EP3478622A1 publication Critical patent/EP3478622A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/40—Crane hooks formed or fitted with load measuring or indicating devices

Definitions

  • Load indicator device in particular for a lifting ring
  • the present invention generally relates to the field of lifting accessories such as rings, hooks, links, chains, slings etc.
  • the present invention more particularly relates to a load indicator device for mounting on such a lifting accessory.
  • Lifting rings are used to secure heavy loads (eg containers, vehicles or construction parts) that require moving, whether on construction sites, in factory warehouses or in harbors. .
  • Lifting rings attached to a load are connected to a lifting hook by slings or chains. It will be noted in passing that in this case it is advantageous to use rotating lifting rings, in order to allow an orientation of the ring with respect to the load being handled.
  • An important goal for manufacturers of lifting accessories is to ensure safety for users, including sizing of parts, choice of materials and manufacturing.
  • the lifting ring and / or the chain-sling can be exposed to an overload, that is to say to a tensile force exceeding the nominal load, including with the safety factors. This can cause plastic deformation of the part and change the mechanical characteristics of the lifting accessory. These situations are not necessarily easily noticeable, especially when the deformation does not lead to break. There is therefore a risk of reusing an overloaded lifting accessory, which endangers the operators and the proper execution of the handling.
  • This type of control means has the advantage of being simple to set up and does not involve adding extra room to the ring, since it is usually included in the shape of the ring.
  • the visual identification by the user is not easy.
  • the indicator is a small protuberance molded into the shape of the ring, and has no distinct color compared to the rest of the ring. The user must compare the form of the indicator with its initial form, which implies a margin of error rather coarse. The error is even greater than the lifting accessory is not always easily accessible from near, with the naked eye. Only an obvious plastic deformation is detectable.
  • Such a device essentially prevents an imminent rupture of the part, and requires a regular and binding control for the user.
  • Another device proposes an electronic solution for measuring the load on a lifting accessory.
  • the accessory is equipped with sensors and light indicators that inform the user of the correct operation of the device, an optimal load, or the exceeding of a limit load exerted on the lifting accessory.
  • Such a device thus makes it possible to visually identify an overshoot, more obviously compared to the previous solution.
  • the marking can be done by an external device, such as a computer, which receives a signal from each lifting device. This allows instant control of multiple devices.
  • this solution imposes a complex and expensive manufacturing. The device does not adapt to different lifting accessory, and its replacement in case of malfunction or breakage, requires a complete replacement of the lifting accessory.
  • the device is purely mechanical and simple to manufacture.
  • the device requires two lifting elements with complementary parts, so a certain complexity in its installation.
  • the visual indicator is again a location of the deformation of a relatively small room. This requires the user to have access close to the parts to be checked, and implies a certain inaccuracy in the evaluation of the overload exerted on the lifting accessories.
  • the object of the present invention is to propose a solution for indicating an overload at the level of a lifting accessory that makes it possible to solve the problems raised by the existing solutions.
  • the object of the present invention is in particular to provide a load indicator device intended to be mounted on a lifting accessory, which is purely mechanical, simple assembly and manufacture, and allows an indication easily identifiable visually.
  • the present invention provides a load indicator device for a lifting accessory comprising, a body adapted to be attached to a so-called “lifting" portion of a lifting accessory; a deformable member plastically associated with the body and positioned to be in use in compression between said lifting portion and a lifting member coupled to the lifting accessory for transmitting a lifting force.
  • the "lifting part” corresponds to the region of the lifting accessory normally in contact with the lifting element applying the lifting force.
  • the lifting part is therefore able to receive and transmit to the rest of the accessory a lifting force, in a so-called normal use of the lifting accessory.
  • this zone corresponds to the two curved parts of the link.
  • the hoist portion generally corresponds to the portion of the hoist loop remote from the body of the ring.
  • the device comprises a cover which, in an initial position, hides an indicator.
  • the device further comprises a deformable member designed so that, when the transmitted force exceeds a predetermined threshold, the deformable member deforms, causing the displacement of the cover so as to reveal at least partly the indicator.
  • the invention is an assembly of mechanical parts intended to be mounted on any type of lifting accessory.
  • the deformation of the deformable member for a predetermined force causes the exposure of an easily identifiable visual indicator. Unlike some known devices, it is not at the level of the deformable member that the deformation must be visually detected, but on a separate indicator of the deformable member. It is therefore possible to use an indicator having a surface whose size is chosen by design, independently of the dimension of the deformable member, and which is positioned so as to be easily identifiable.
  • the predetermined threshold of compressive force from which the deformable member deforms so as to trigger the cover can be set by the manufacturer to any desired value. The threshold may be equal to the maximum usable load (CMU), or be set to a higher value within the limit of a safety factor. In some applications, the predetermined threshold may be set to a value lower than the CMU.
  • the device is able to be disassembled in the event of maintenance or for use on another accessory.
  • the body advantageously comprises a bearing face in contact with the lifting part, the bearing face preferably having a shape complementary to the lifting part.
  • the bearing face has a shape suitable for any type of lifting accessory or a target type of lifting accessory, such as lifting rings, or a range of products from a specific manufacturer.
  • the bearing surface is preferably complementary to the lifting accessory, and extends over a lifting portion of the lifting accessory.
  • the device is mounted on a curved lifting portion, the inner side, for example a U-shaped part flat or curved bottom.
  • the body also comprises a base portion having a face participating in the bearing face and an opposite support face, receiving the deformable member.
  • the deformable member is preferably made of metal (but the plastic can not be excluded for low loads), made in one piece with the body.
  • the deformable member may comprise any structure suitable for resisting compression to a pre-definable threshold, and then crashing by plastic deformation.
  • one or more plastically deformable metal blades may be used, preferably several parallel metal blades; or a network of columns or metal beams plastically deformable (small section).
  • the use of such plastically deformable elements provides a design in which the plastic deformation of the organ is accurately determined by the design of these lamellae or mini-columns. This allows greater flexibility in the choice of force from which the organ deforms plastically.
  • the metal blades or mini-columns preferably extend parallel to the direction of application of the compressive force.
  • the deformable member may be directly in contact with the lifting element which applies the pulling force.
  • the deformable member comprises a distribution plate (non-deformable) intended to be in contact with the lifting element on its outer face, and configured to receive the force transmitted by the latter.
  • the distribution plate is in contact, by its inner face, plastically deformable elements.
  • the distribution plate (which is not intended to deform plastically before the slats or mini-columns, etc.) allows to receive a pressure force corresponding to the lifting force exerted on the lifting accessory, and to distribute this pressure force more uniformly on the plastically deformable elements of the deformable member.
  • the distribution plate has at least one actuating surface coming into contact with the cover, which makes it possible to move the hood by direct contact. The distribution plate thus transmits part of the pressure force it receives on the hood.
  • the indicator is a color zone of good visibility, which slices the colors of the neighboring parts of the device and the ring, in order to obtain a good visual contrast when the cover jumps.
  • the indicator is an area that easily differs from all other parts of the device, or at least neighboring parts. Once visible, the indicator is remarkable by the user at a distance of several meters. The notification of the indicator is then not performed only during a verification or maintenance operation, but immediately after the appearance of the indicator. This allows a real-time indicator alert function for the user.
  • the indicator is positioned to be visible at different angles of view of the device, on an outer periphery of the lifting portion.
  • Fastening means for attaching the body to the lifting member comprises a housing configured to grip the lifting member between the body and said housing.
  • the casing and the body extend respectively on the same length of the lifting part and are complementary sections, substantially U-shaped, so that, once associated, surround the lifting portion over the entire periphery.
  • the casing and the body are preferably held together by complementary shapes (positive mechanical engagement).
  • the cover preferably has a shape substantially U complementary to the housing.
  • the indicator is thus positioned on the outer surface of the housing, under the hood in the initial position.
  • the indicator could alternatively be provided on the body, by providing a cutout of the housing surrounding the indicator positioned on the body, and providing an initial position of the cover covering the indicator.
  • the cover comprises fastening means in the initial position.
  • the hood In the initial position, the hood is thus retained so as not to be moved involuntarily and to avoid creating false alarm situations.
  • the fastening means of the cover are preferably fixing means by elastic deformation, the body having means for fixing the cover in the initial position, complementary to those of the cover.
  • the hood is thus held in the initial position by a fastener adapted to deform under the action of a pressure force; and to break free or break for a predetermined pressure force.
  • other means of fixing the body are possible.
  • a U-shaped cover can then cover this area is to be fixed on the body, as is the case when using a housing.
  • the deformable member is metal, so as to withstand high pressure forces which are forces exerted on the lifting accessory in normal use cases.
  • the deformable member has come from body material, so as to simplify the variety of parts of the device, but also to ensure optimal fixation of the deformable member on the body which will not be modified by the forces induced during the plastic deformation of the organ.
  • the present invention also relates to a lifting accessory comprising the present load indicator device.
  • the lifting accessory is: a lifting ring, a hook, a link or a half-link.
  • the invention also relates to a rotating lifting ring comprising a catching loop, mounted on a body in which a bore is made, and a screw fastener passing through the bore, the present load indicator being mounted. in the interior space of a curvature of the hanging loop away from the body
  • Figure 1 is a front view, exploded of a non-limiting embodiment of the device according to the invention.
  • Figure 2 is a front view of the device of Figure 1 mounted on a lifting ring;
  • Figure 3 is a perspective view of the body of the device of Figure 1;
  • Figure 4 a detailed view of the deformable member
  • Figure 5 a sectional view V-V of Figure 2;
  • Figure 6 a sectional view along a longitudinal-vertical orientation plane passing through the center of the lifting ring of Figure 2;
  • Figure 7 a front view of the device of Figure 1 mounted on a lifting ring, with the hood expelled.
  • FIG. 1 there is shown an exploded view of the present charge indicator device (or charge limit indicator device) according to one embodiment. It mainly comprises a body 12, a plastically deformable member 14, an indicator 18 (here preferably placed on a fastening means 16) and a cover 20. As will be understood from the following description, the cover 20 conceals, in an initial position, the indicator 18; and the organ deformable 14 is designed such that beyond a predetermined force, the deformable member 14 is deformed, causing the displacement of the cover 20 so as to reveal at least partially the indicator 18.
  • the device 10 is intended to be fixed on a lifting accessory 22, and more specifically to a lifting part P of the latter, as represented in FIG. 2.
  • the lifting element 22 is here a pivoting lifting ring 22, with double articulation.
  • Such pivoting rings are widely known in the field and typically comprise a rotating element of generally annular shape, called a ring or catching loop 22i, mounted on a body 22 2 in which a bore is made, and a screw fixing member. 22 3 passing through the bore.
  • the screw fastener 22 3 comprises a head 22 serving as a stop for the body 22 2 and a threaded portion 22 5 (or threaded) to allow it to be fastened by screwing into a threaded hole or onto a threaded rod secured to the load to lift.
  • the ring 22 of Figure 2 thus has a first pivot axis A corresponding to the axis of the fastener 22 3 ; and the loop 22i is articulated on the body 22 2 , defining a second pivot axis B, perpendicular to the first.
  • Such rotating rings with single or double articulation, are described for example in EP1069067 or EP2361870 and the device 10 is intended to be used with this type of rings, among others.
  • the device 10 is easily adaptable to other lifting accessories, such as a hook, a link (chain) or a half-link.
  • the device 10 has the overall shape of a half disc, seen in the plane of the inner opening 24 defined by the hooking loop 22i (vertical-longitudinal orientation in Fig.2).
  • a lifting accessory allows the transmission of a lifting force for moving a load or element to be lifted.
  • the lifting forces are generally transmitted by another lifting accessory, which will be called lifting element, and coupled to the first lifting accessory (this lifting element being connected for example to the hook of the hoisting machine).
  • the device 10 is mounted on the lifting loop 22i of the ring 22 at a part that will be subjected to tensile stress by mechanical contact at a point. several points, or a plane, this region being called lifting part P, and this by the lifting element coupled to the loop 22i (shown in broken lines) transmitting the lifting force.
  • the schematic lifting element is a chain link, but it could be a hook, a sling, etc.
  • the lifting portion P corresponds to the curved portion of the hooking loop 22i, distal from the ring body.
  • the device 10 will be placed on a lifting portion P of a lifting accessory in order to be compressed between the lifting portion and the lifting element transmitting the lifting force.
  • the body 12 of the device 10 is illustrated in detail in FIG. 3.
  • the body 12 is a metal part intended to be fixed on the lifting element 22 at the lifting portion P of the loop 22i.
  • the body 12 has substantially a crescent shape, so as to conform to the curvature of the interior space of the hooking loop 22i.
  • the body 12 is, in use, positioned in compression between the lifting accessory 22 and the lifting element.
  • the body 12 undergoes a pressure / compression force equal to the tensile force exerted on the lifting element 22.
  • the body 12 comprises a bearing surface 26 coming into contact with the lifting element 22.
  • the bearing face 26 has a shape complementary to the lifting element 22.
  • the bearing surface 26 thus comprises a groove 28 which matches the curvature of the loop 22i of the ring, which allows to better distribute the forces exerted on the device 10 to the lifting element.
  • the cross section of the groove 28 is substantially U-shaped so as to surround a portion, e.g. about one half, from the periphery of the hooking loop 22i.
  • the body 12 also advantageously comprises two positioning ends 30. The positioning ends are made of solid metal and arranged on either side of the body 12.
  • Each positioning end 30 has an inner face 32 in a vertical-transverse orientation plane facing the space between the positioning ends 30.
  • the body 12 comprises a base portion 34 which connects the ends 30 of material.
  • the base portion 34 is thus positioned centrally in the body 12 and partially defines the bearing face 26.
  • the part of base 34 comprises a support face 38 in a longitudinal-transverse orientation plane, opposite to the bearing face 26, and two lateral faces 36 in vertical-longitudinal orientation planes, which connect the bearing faces 26 and support 38.
  • the base portion 34 also comprises fastening means 40 of the cover 20.
  • the holding means 40 are positioned on the lateral faces 36, on either side of the base portion 34.
  • the holding means 40 are here made of material of the body 12, and are presented as two triangular projections having a lower face 42 in a transverse-longitudinal orientation plane.
  • the body 12 also carries the deformable member 14.
  • the deformable member 14 is arranged on the body 12 against the support face 38, opposite to the bearing face 26.
  • the deformable member 14 is preferably made of body material 12 at the support surface 38.
  • FIG. 4 illustrates in detail a possible embodiment of the deformable member 14 arranged on the base 34. It comprises a set of deformable metal blades 44, which extend parallel and substantially perpendicular to the support surface 38 of the base 34. assembly of metal blades 44 is configured to deform from a predetermined threshold value of pressure force, denoted Fs, exerted, in compression, thereon.
  • Fs pressure force
  • the design of the device is such that the plastic deformation of the deformable member, that is to say the crushing of the blades, will generate the release of the cover 20.
  • the predetermined threshold Fs, beyond which the deformable member deforms plastically, is determined by design, at any value desired by the manufacturer. As will be understood, once the deformable member 14 has undergone plastic deformation, it can not resume its initial configuration. This unique use character is a guarantee of security.
  • each blade 44 extends respectively from the face 38 opposite to the bearing face 26, to a distribution plate 48.
  • each blade 44 extends in a nonlimiting manner perpendicularly to the support face 38 of the base 34, so as to be substantially parallel to the compression direction of the member 14 (in the figure in the vertical direction V).
  • the blades 44 can extend in another direction.
  • the compression member may take a different shape: it may be a set of plastically deformable element zig-zag, or a set of deformable mini-columns, for example square base.
  • a lifting accessory is designed for a given operating load, which is reported as the maximum usable load CMU.
  • the manufacturer provides a margin of safety by applying a coefficient during the design (eg 2.3 or 4 times the CMU). If the force applied to the lifting accessory exceeds the safety factors, it causes a plastic deformation thereof. Once the accessory deformed plastically, its mechanical properties are modified. The accessory can no longer support the same load before deforming again or even breaking. The new properties of the lifting accessory are not predictable, and the risk of breakage is difficult to evaluate. For safety reasons, it is important not to use a lifting accessory once it has undergone a first plastic deformation.
  • the threshold Fs it is therefore possible to define the threshold Fs so that the device 10 is triggered before reaching a force F D causing the deformation of the ring itself (hence beyond the safety coefficients).
  • the set of blades 44 is dimensioned so that it is deformed and ejects the cover 20 for a threshold value of pressure force Fs applied, which does not exceed the force F D .
  • the threshold value Fs corresponds to a force greater than the force applied to the lifting accessory for normal use thereof (beyond the CMU), and remaining within the safety margin (therefore below at FD).
  • the lifting accessory can be preserved and used with a new device after replacing the device with the fully deformed blade assembly. Note however that if the device 10 is triggered, it is recommended to have the lifting accessory checked by an expert to ensure its integrity.
  • the distribution plate 48 is a metal plate which has an inner face 50 attached to the metal blade assembly 44 and an outer face 52 configured to be in contact with the lifting member coupled to the lifting ring.
  • the outer face 52 may be of complementary shape to the lifting accessory.
  • the distribution plate 48 is placed between the inner faces 32 of the positioning ends 30 of the body 12.
  • the inner faces 32 constitute stops in longitudinal displacement of the distribution plate 48.
  • the distribution plate 48 is ideally not deformable under the action of a lifting force (in any case for forces below Fs). In this way, even after deformation of the set of deformable blades 44, the contact between the device and the lifting accessory remains unchanged. A predefined contact between the device 10 and the lifting accessory makes it possible to have a predictable behavior in deformation of the deformable blades 46 and to simplify the dimensioning of the parts of the device.
  • the distribution plate 48 also has flanges 54 protruding transversely on either side of the body 12.
  • the flanges 54 are intended to come into contact with the cover 20 and thus constitute surfaces In the initial position, it is possible to preserve a slight clearance between the flanges 54 and the cover, in order to take into account any manufacturing tolerances and deformation of the member 14 before reaching the threshold Fs.
  • fastening means 16 are provided, which include a housing 58 which allows the device 10 to be held around the lifting accessory 22.
  • the bearing surface 26 of the body 12 has two edges 56, which are located transversely on both sides of the groove 28 for the lifting element, and are in contact with the housing 58.
  • the casing 58 is preferably a piece of rigid plastic material, complementary in shape to that of the lifting accessory 22 at its lifting portion P.
  • the housing 58 has a substantially U-shaped cross section, as shown in FIG. Figure 5. The housing 58 is thus able to surround a part, e.g. about a half, from the periphery of the lifting accessory.
  • the housing 58 has an inner face 60 in contact with the hooking loop 22i, and an outer face 62 opposite.
  • Each branch of the U formed by the housing terminates in an edge 64 which connects the inner 60 and outer 62 faces. These edges 64 are mounted in contact with the edges 56 of the body 12.
  • edges 64 of the casing 58 comprise four endings 65 in the form of hooks.
  • the terminations are arranged symmetrically at the two longitudinal ends of each edge 64.
  • the hooks 65 are complementary to the positioning ends 30 of the body 12, and are intended to be fixed by interlocking on said positioning ends 30 so as to maintain the edges 64 in position. contact with edges 56.
  • the edges 64 and edges 56 are kept in contact by conventional fastening means, for example by elastic interlocking, screw nut systems, or rivets.
  • the body 12 and the housing 58 once associated, completely surround the lifting accessory at the lifting portion P.
  • the connection between the body 12 and the housing 58 realize a tightening of the lifting accessory between the elements of the device 10.
  • the housing 58 and the body 12 are also removable. The device 10 can thus be replaced or exchanged.
  • the housing 58 also includes the indicator 18, intended to alert a user to exceed a predetermined load on the lifting accessory.
  • the indicator 18 is positioned on the outer face 62 of the housing 58.
  • the indicator 18 is here an area of the outer face 62 which has a color of good visibility, that is to say, making it easy to distinguish visually from neighboring colors or other parts of the device 10. Ideally, indicator 18 therefore has a sharp color of the housing and the cover (which are preferably the same color). Here, the indicator 18 is bright and fluorescent color, such as fluorescent yellow or fluorescent orange.
  • the hoist ring may have an orange, red, pink or yellow hook-and-loop fastener, the casing a green color, and the indicator a bright red or orange or fluo color.
  • the indicator 18 occupies an area that extends at least over a transverse periphery of the casing 58 in U, connecting the edges 64 of the housing 58. In this way, the indicator 18 is likely to be visible at a wide angle for observing the device 10, ideally covering substantially more than one half-sphere around the device 10.
  • the indicator 18 extends in a longitudinal direction over a length equal to that of the distribution plate 48 of the body 12, and opposite said distribution plate 48.
  • the device 10 is designed so that the indicator 18 is covered by the cover 20 in the initial position (that is to say without deformation of the member 14), for a pressure force exerted on the blade assembly 44 below the threshold value Fs.
  • the cover 20 is a piece of plastic material shaped curved rectangular blade, width in a longitudinal direction at least equal to that of the indicator 18. As shown in Figure 5, the cover 20 has a section along a plane of U-shaped vertical-transverse orientation complementary to that of the housing 58. Thus, the general shape of the hood 20 surrounds the periphery of the housing 58.
  • the cover 20 has an inner face 66 facing the indicator 20, and an outer face 68 opposite.
  • the two ends of the U formed by the cover 20, comprise two thrust surfaces 70.
  • the thrust surfaces 70 are flat, complementary to the flanges 54 of the distribution plate 58.
  • the surfaces of thrust 70 are in contact with the flanges 54, or close.
  • the cover then covers the set of deformable blades 44, the base portion 34 of the body 12, and the indicator 20. The set of deformable blades is thus protected, which avoids the intrusion of foreign bodies.
  • the side faces 36 are preferably recessed with respect to the ends 30, and the housing area where the indicator 18 is positioned is also set back, which allows to receive the cover 20 so that it is integrated in housing without protruding part. This avoids a tear of the hood 20 during handling.
  • the cover 20 also comprises complementary fastening means 68 of the attachment means 40 of the base portion 34 of the body 12.
  • the fastening means 68 allow the hood to be locked by elastic deformation.
  • the shape of the fastening means 68 is clipped against the lower faces 42 of the fastening means 40 complementary to the base portion 34.
  • the device 10 In the normal use configuration, the device 10 is positioned in compression between the lifting accessory 22 on which it is mounted, and a lifting member which transmits a lifting force to the lifting member. The device 10 is subjected to a pressure force equal to the transmitted lifting force, and remains in this configuration as long as the transmitted lifting force is below the threshold Fs.
  • the cover 20 is in the initial position, in which it hides the indicator 20, and the thrust surfaces 70 of the cover 20 are in contact with the flanges 54 of the distribution plate 48.
  • the alert is shown with reference to FIG.
  • the distribution plate 48 exerts on the deformable elements 44 a pressure which leads to their deformation, crushing: the distribution plate then moves in the direction the base 34, and therefore the cover 20. The cover 20 is pushed by the distribution plate 48 at the thrust surfaces 70.
  • the cover 20 moves vertically, pushed by the distribution plate 48 until the locking means 72 of the cover 20 deform and unhook the holding means 40 of the body 12.
  • the cover 20 is suddenly released from the means of maintaining 40; the indicator 18 is then discovered and becomes visible to the user.
  • the locking means 72 of the cover break, so as to make it impossible to replace the cover 20 after exceeding the threshold Fs.
  • the cover 20 is ejected out of its initial position for exceeding a predetermined pressure force. It moves only between two positions: a position in which the cover 20 completely hides the indicator 18, and a position in which the cover 20 is away from the indicator 18 which is fully visible.
  • the device 10 makes it possible to alert a user effectively of the occurrence of an overload on the lifting accessory 22.
  • the body 12 is preferably made in one piece (monoblock) with the deformable member, in all materials suitable for the intended use, in particular as regards the resistance to mechanical stresses applied to the device in use and the deformation deformable organ.
  • a metal e.g. steel, titanium or any suitable alloys.
  • the manufacture of the body with the deformable member can be done by machining, injection or 3D printing (additive construction). For less important loads it will be possible to make the body / deformable body assembly plastic.

Abstract

A load indication device (10) for a lifting accessory comprising a body (12) capable of being attached to a lifting portion (P) of a lifting accessory (22); and a plastically deformable member (14) associated with the body (12) and positioned, when in use, to be in a compressed state between said lifting portion (P) and a lifting member coupled to the lifting accessory (22) for transmitting a lifting force. The device (10) comprises a cover (20) which, in an initial position, hides an indicator (18). The deformable member (14) is configured so that, when the transmitted force exceeds a predetermined threshold (Fs), the deformable member (14) is plastically deformed and causes the cover (20) to move in such a manner as to reveal, at least in part, the indicator (18).

Description

Dispositif de témoin de charge, en particulier pour un anneau de levage  Load indicator device, in particular for a lifting ring
Domaine technique  Technical area
La présente invention concerne généralement le domaine des accessoires de levage tels que anneaux, crochets, maillons, chaînes, élingues etc. La présente invention concerne plus particulièrement un dispositif de témoin de charge destiné à être monté sur un tel accessoire de levage.  The present invention generally relates to the field of lifting accessories such as rings, hooks, links, chains, slings etc. The present invention more particularly relates to a load indicator device for mounting on such a lifting accessory.
Etat de la technique State of the art
Une variété d'accessoires de levage sont utilisés dans le domaine de la manutention ou du transport de marchandises. Les anneaux de levage, par exemple, sont utilisés pour arrimer des charges lourdes (par ex. containers, véhicules ou pièces de construction) nécessitant un déplacement, que ce soit sur les chantiers de construction, dans les entrepôts d'usines ou dans les ports.  A variety of lifting accessories are used in the field of handling or transporting goods. Lifting rings, for example, are used to secure heavy loads (eg containers, vehicles or construction parts) that require moving, whether on construction sites, in factory warehouses or in harbors. .
Lors de la manutention, plusieurs accessoires de levage sont généralement liés ensemble. Les anneaux de levage arrimés à une charge sont reliés un crochet de levage par des élingues ou chaînes. On notera en passant que dans ce cas il est avantageux d'utiliser des anneaux de levage tournants, afin de permettre une orientation de l'anneau par rapport à la charge manutentionnée. Un objectif important pour les fabricants d'accessoires de levage est de garantir la sécurité aux utilisateurs, notamment par le dimensionnement des pièces, le choix des matériaux et la fabrication. When handling, several lifting accessories are usually tied together. Lifting rings attached to a load are connected to a lifting hook by slings or chains. It will be noted in passing that in this case it is advantageous to use rotating lifting rings, in order to allow an orientation of the ring with respect to the load being handled. An important goal for manufacturers of lifting accessories is to ensure safety for users, including sizing of parts, choice of materials and manufacturing.
En pratique, l'anneau de levage et/ou la chaine-élingue peut être exposée à une surcharge, c'est-à-dire à une force de traction excédant la charge nominale, y compris avec les coefficients de sécurité. Cela peut provoquer une déformation plastique de la pièce et modifier les caractéristiques mécaniques de l'accessoire de levage. Ces situations ne sont pas forcément aisément remarquables, surtout lorsque la déformation n'entraine pas la rupture. Il existe donc un risque de réutiliser un accessoire de levage ayant subi une surcharge, ce qui met en danger les opérateurs et la bonne exécution de la manutention. In practice, the lifting ring and / or the chain-sling can be exposed to an overload, that is to say to a tensile force exceeding the nominal load, including with the safety factors. This can cause plastic deformation of the part and change the mechanical characteristics of the lifting accessory. These situations are not necessarily easily noticeable, especially when the deformation does not lead to break. There is therefore a risk of reusing an overloaded lifting accessory, which endangers the operators and the proper execution of the handling.
On connaît différents moyens de contrôler la charge supportée par un accessoire de levage. De manière simple, comme par exemple dans la demande de brevet GB 1 .534.108, le contrôle de la charge d'un anneau se fait visuellement par le repérage d'un indicateur gravé sur l'anneau. La position ou la forme de l'indicateur est modifiée par la déformation de l'accessoire. Various means are known to control the load supported by a lifting accessory. In a simple manner, as for example in patent application GB 1 534 10 8, the control of the load of a ring is visually done by the marking of an indicator engraved on the ring. The position or shape of the indicator is modified by the deformation of the accessory.
Ce type de moyen de contrôle à l'avantage d'être simple à mettre en place et de ne pas impliquer l'ajout de pièce supplémentaire à l'anneau, puisqu'il est généralement inclus dans la forme de l'anneau. En revanche, le repérage visuel par l'utilisateur n'est pas aisé. L'indicateur est une protubérance de petite taille moulée dans la forme de l'anneau, et n'a pas de couleur distincte par rapport au reste de l'anneau. L'utilisateur doit comparer la forme de l'indicateur avec sa forme initiale, ce qui implique une marge d'erreur assez grossière. L'erreur étant d'autant plus grande que l'accessoire de levage n'est pas toujours facilement accessible de près, à l'œil nu. Seule une déformation plastique manifeste est détectable. This type of control means has the advantage of being simple to set up and does not involve adding extra room to the ring, since it is usually included in the shape of the ring. On the other hand, the visual identification by the user is not easy. The indicator is a small protuberance molded into the shape of the ring, and has no distinct color compared to the rest of the ring. The user must compare the form of the indicator with its initial form, which implies a margin of error rather coarse. The error is even greater than the lifting accessory is not always easily accessible from near, with the naked eye. Only an obvious plastic deformation is detectable.
Un tel dispositif permet essentiellement d'éviter une rupture imminente de la pièce, et demande un contrôle régulier et contraignant pour l'utilisateur. Such a device essentially prevents an imminent rupture of the part, and requires a regular and binding control for the user.
Un autre dispositif, exposé dans le document US 2015/0246793, propose une solution électronique de mesure de la charge subie par un accessoire de levage. Dans ce cas, l'accessoire est équipé de capteurs et d'indicateurs lumineux qui informent l'utilisateur du bon fonctionnement du dispositif, d'une charge optimale, ou du dépassement d'une charge limite exercée sur l'accessoire de levage. Another device, disclosed in US 2015/0246793, proposes an electronic solution for measuring the load on a lifting accessory. In this case, the accessory is equipped with sensors and light indicators that inform the user of the correct operation of the device, an optimal load, or the exceeding of a limit load exerted on the lifting accessory.
Un tel dispositif permet ainsi de repérer visuellement un dépassement de charge, de manière plus évidente par rapport à la solution précédente. De plus, le repérage peut se faire par un appareil extérieur, comme un ordinateur, qui reçoit un signal émis par chaque dispositif de levage. Cela permet le contrôle instantané de plusieurs dispositifs. En revanche cette solution impose une fabrication complexe et coûteuse. Le dispositif ne s'adapte pas à diffèrent accessoire de levage, et son remplacement en cas de mauvais fonctionnement ou de casse, oblige un remplacement complet de l'accessoire de levage. Such a device thus makes it possible to visually identify an overshoot, more obviously compared to the previous solution. In addition, the marking can be done by an external device, such as a computer, which receives a signal from each lifting device. This allows instant control of multiple devices. On the other hand, this solution imposes a complex and expensive manufacturing. The device does not adapt to different lifting accessory, and its replacement in case of malfunction or breakage, requires a complete replacement of the lifting accessory.
On connaît aussi de l'état de l'art un dispositif de contrôle qui comprend un fusible mécanique qui se brise en cas de surcharge. Un exemple d'un tel dispositif est dévoilé dans la demande de brevet US 4,578,941 . Le fusible mécanique est une tige de métal positionnée en parallèle avec deux maillons d'une chaîne. La tige comporte deux extrémités respectivement fixées sur deux maillons successifs de la chaîne. Un tel dispositif est simple et visuellement repérable en cas de surcharge. En revanche, le fusible rend impossible la déconnexion des accessoires de levage. Le dispositif est défini lors de la conception de la chaîne et ne peut pas être adapté sur des accessoires différents, ni être remplacé en cas de maintenance, ou échangé en fonction d'un besoin d'utilisation. Cette solution offre peu de flexibilité d'utilisation. Also known from the state of the art control device that includes a mechanical fuse that breaks in case of overload. An example of such a device is disclosed in US patent application 4,578,941. The mechanical fuse is a metal rod positioned in parallel with two links of a chain. The rod has two ends respectively fixed on two successive links of the chain. Such a device is simple and visually identifiable in case of overload. On the other hand, the fuse makes it impossible to disconnect the lifting accessories. The device is defined during the design of the chain and can not be adapted to different accessories, nor be replaced in case of maintenance, or exchanged according to a need for use. This solution offers little flexibility of use.
Une dernière solution connue est exposée dans la demande de brevet WO 2008/007961 . Ce document décrit un dispositif de levage comprenant une première pièce de levage et une deuxième pièce de levage qui sont engagées de manière à permettre la transmission d'une force de levage. Les deux pièces sont connectées à travers un indicateur en métal déformable plastiquement sous l'action d'une force de pression prédéterminée. L'indicateur comprend une zone de déformation qui constitue un repère visuel indiquant un dépassement d'une limite de charge. A last known solution is disclosed in patent application WO 2008/007961. This document describes a lifting device comprising a first lifting part and a second lifting part which are engaged so as to allow the transmission of a lifting force. The two pieces are connected through a plastically deformable metal indicator under the action of a predetermined pressure force. The indicator includes a deformation zone which constitutes a visual cue indicating an exceeding of a load limit.
Il s'agit d'un dispositif qui peut être monté sur différents types d'accessoires de levage. Le dispositif est purement mécanique et de fabrication simple. This is a device that can be mounted on different types of lifting accessories. The device is purely mechanical and simple to manufacture.
En revanche, le dispositif nécessite deux éléments de levage comportant des pièces complémentaires, donc une certaine complexité dans son installation. L'indicateur visuel est de nouveau un repérage de la déformation d'une pièce relativement petite. Cela demande à l'utilisateur d'avoir un accès rapproché des pièces à contrôler, et implique une certaine imprécision dans l'évaluation de la surcharge exercée sur les accessoires de levage. However, the device requires two lifting elements with complementary parts, so a certain complexity in its installation. The visual indicator is again a location of the deformation of a relatively small room. This requires the user to have access close to the parts to be checked, and implies a certain inaccuracy in the evaluation of the overload exerted on the lifting accessories.
Objet de l'invention Object of the invention
L'objet de la présente invention est de proposer une solution d'indication d'une surcharge au niveau d'un accessoire de levage qui permette de résoudre les problèmes soulevés par les solutions existantes.  The object of the present invention is to propose a solution for indicating an overload at the level of a lifting accessory that makes it possible to solve the problems raised by the existing solutions.
L'objet de la présente invention est notamment de proposer un dispositif de témoin de charge destiné à être monté sur un accessoire de levage, qui est purement mécanique, de montage et de fabrication simple, et permet une indication aisément repérable visuellement. The object of the present invention is in particular to provide a load indicator device intended to be mounted on a lifting accessory, which is purely mechanical, simple assembly and manufacture, and allows an indication easily identifiable visually.
Cet objectif est atteint par un dispositif de témoin de charge selon la revendication 1 . This object is achieved by a charge indicator device according to claim 1.
Description générale de l'invention General description of the invention
Pour poursuivre cet objectif, la présente invention propose un dispositif de témoin de charge pour un accessoire de levage comprenant, un corps apte à être fixé à une partie dite « de levage » d'un accessoire de levage ; un organe déformable plastiquement associé au corps et positionné de manière à se trouver, en utilisation, en compression entre ladite partie de levage et un élément de levage accouplé à l'accessoire de levage pour transmettre une force de levage.  To further this objective, the present invention provides a load indicator device for a lifting accessory comprising, a body adapted to be attached to a so-called "lifting" portion of a lifting accessory; a deformable member plastically associated with the body and positioned to be in use in compression between said lifting portion and a lifting member coupled to the lifting accessory for transmitting a lifting force.
Dans le cadre l'invention, la « partie de levage » correspond à la région de l'accessoire de levage se trouvant normalement au contact avec l'élément de levage appliquant la force de levage. La partie de levage est donc apte à recevoir et transmettre au reste de l'accessoire une force de levage, dans une utilisation dite normale de l'accessoire de levage. Par exemple pour un maillon d'une chaîne classique, cette zone correspond aux deux parties recourbées du maillon. Pour un anneau de levage, la partie de levage correspond généralement à la partie de la boucle d'accrochage éloignée du corps de l'anneau. Selon l'invention, le dispositif comprend un capot qui, dans une position initiale, cache un indicateur. Le dispositif comprend en outre un organe déformable conçu de sorte que, lorsque la force transmise excède un seuil prédéterminé, l'organe déformable se déforme, provoquant ainsi le déplacement du capot de manière à révéler au moins en partie l'indicateur. In the context of the invention, the "lifting part" corresponds to the region of the lifting accessory normally in contact with the lifting element applying the lifting force. The lifting part is therefore able to receive and transmit to the rest of the accessory a lifting force, in a so-called normal use of the lifting accessory. For example, for a link of a conventional chain, this zone corresponds to the two curved parts of the link. For a hoist ring, the hoist portion generally corresponds to the portion of the hoist loop remote from the body of the ring. According to the invention, the device comprises a cover which, in an initial position, hides an indicator. The device further comprises a deformable member designed so that, when the transmitted force exceeds a predetermined threshold, the deformable member deforms, causing the displacement of the cover so as to reveal at least partly the indicator.
L'invention est un assemblage de pièces mécaniques destiné à être monté sur tout type d'accessoire de levage. La déformation de l'organe déformable pour une force prédéterminée entraine la mise à nu d'un indicateur visuel aisément repérable. Contrairement à certains dispositifs connus, ce n'est pas au niveau de l'organe déformable qu'il faut visuellement détecter la déformation, mais sur un indicateur distinct de l'organe déformable. On peut donc utiliser un indicateur ayant une surface dont la taille est choisie par conception, indépendamment de la dimension de l'organe déformable, et qui est positionné de manière à être facilement identifiable. Le seuil prédéterminé de force de compression à partir duquel l'organe déformable se déforme de sorte à déclencher le capot peut être fixé par le fabricant à toute valeur souhaitée. Le seuil peut être égal à la charge maximale d'utilisation (CMU), ou être fixé à une valeur supérieure dans la limite d'un coefficient de sécurité. Dans certaines applications, on peut fixer le seuil prédéterminé à une valeur inférieure à la CMU. The invention is an assembly of mechanical parts intended to be mounted on any type of lifting accessory. The deformation of the deformable member for a predetermined force causes the exposure of an easily identifiable visual indicator. Unlike some known devices, it is not at the level of the deformable member that the deformation must be visually detected, but on a separate indicator of the deformable member. It is therefore possible to use an indicator having a surface whose size is chosen by design, independently of the dimension of the deformable member, and which is positioned so as to be easily identifiable. The predetermined threshold of compressive force from which the deformable member deforms so as to trigger the cover can be set by the manufacturer to any desired value. The threshold may be equal to the maximum usable load (CMU), or be set to a higher value within the limit of a safety factor. In some applications, the predetermined threshold may be set to a value lower than the CMU.
Selon les variantes, le dispositif est apte à être démonté en cas de maintenance ou pour une utilisation sur un autre accessoire. According to the variants, the device is able to be disassembled in the event of maintenance or for use on another accessory.
Le corps comprend avantageusement une face d'appui en contact avec la partie de levage, la face d'appui ayant de préférence une forme complémentaire à la partie de levage. The body advantageously comprises a bearing face in contact with the lifting part, the bearing face preferably having a shape complementary to the lifting part.
La face d'appui a une forme adaptée à tout type d'accessoire de levage ou à un type cible d'accessoire de levage, comme par exemple aux anneaux de levage, ou encore à une gamme de produits d'un fabricant spécifique. La surface d'appui est de préférence complémentaire à l'accessoire de levage, et s'étend sur une partie de levage de l'accessoire de levage. De préférence le dispositif se monte sur un partie de levage incurvée, du côté intérieur, par exemple une partie en U à fond plat ou courbe. The bearing face has a shape suitable for any type of lifting accessory or a target type of lifting accessory, such as lifting rings, or a range of products from a specific manufacturer. The bearing surface is preferably complementary to the lifting accessory, and extends over a lifting portion of the lifting accessory. Preferably the device is mounted on a curved lifting portion, the inner side, for example a U-shaped part flat or curved bottom.
Le corps comprend aussi une partie de base ayant une face participant à la face d'appui et une face support opposée, recevant l'organe déformable. L'organe déformable est de préférence en métal (mais le plastique n'est pas à exclure pour des charges faibles), réalisé en une seule pièce avec le corps. L'organe déformable peut comprendre toute structure appropriée pour résister à la compression jusqu'à un seuil pré-définissable, et s'écraser ensuite par déformation plastique. On peut par exemple utiliser une ou plusieurs lames métalliques déformables plastiquement, de préférence plusieurs lames métalliques parallèles ; ou encore un réseau de colonnes ou poutres métalliques déformables plastiquement (de faible section). L'usage de tels éléments déformables plastiquement offre un design dans lequel la déformation plastique de l'organe est déterminée de manière précise par le dimensionnement de ces lamelles ou mini-colonnes. Cela permet une plus grande flexibilité dans le choix de la force à partir de laquelle l'organe se déforme plastiquement. Les lames métallique ou mini-colonnes s'étendent de préférence parallèlement à la direction d'application de la force de compression. The body also comprises a base portion having a face participating in the bearing face and an opposite support face, receiving the deformable member. The deformable member is preferably made of metal (but the plastic can not be excluded for low loads), made in one piece with the body. The deformable member may comprise any structure suitable for resisting compression to a pre-definable threshold, and then crashing by plastic deformation. For example, one or more plastically deformable metal blades may be used, preferably several parallel metal blades; or a network of columns or metal beams plastically deformable (small section). The use of such plastically deformable elements provides a design in which the plastic deformation of the organ is accurately determined by the design of these lamellae or mini-columns. This allows greater flexibility in the choice of force from which the organ deforms plastically. The metal blades or mini-columns preferably extend parallel to the direction of application of the compressive force.
L'organe déformable peut se trouver directement au contact de l'élément de levage qui applique la force de traction. De préférence, l'organe déformable comprend une plaque de distribution (non déformable), destinée à être en contact avec l'élément de levage sur sa face extérieure, et configurée pour recevoir la force transmise par ce dernier. La plaque de distribution est au contact, par sa face intérieure, des éléments déformables plastiquement. La plaque de distribution (qui n'a pas vocation à se déformer plastiquement avant les lamelles ou mini-colonnes, etc.) permet de recevoir une force de pression correspondant à la force de levage exercée sur l'accessoire de levage, et de répartir cette force de pression de manière plus uniforme sur les éléments plastiquement déformables de l'organe déformable. Selon les variantes, la plaque de distribution comporte au moins une surface d'actionnement venant en contact avec le capot, ce qui permet de déplacer le capot par contact direct. La plaque de distribution permet ainsi de transmettre une partie la force de pression qu'elle reçoit sur le capot. The deformable member may be directly in contact with the lifting element which applies the pulling force. Preferably, the deformable member comprises a distribution plate (non-deformable) intended to be in contact with the lifting element on its outer face, and configured to receive the force transmitted by the latter. The distribution plate is in contact, by its inner face, plastically deformable elements. The distribution plate (which is not intended to deform plastically before the slats or mini-columns, etc.) allows to receive a pressure force corresponding to the lifting force exerted on the lifting accessory, and to distribute this pressure force more uniformly on the plastically deformable elements of the deformable member. According to the variants, the distribution plate has at least one actuating surface coming into contact with the cover, which makes it possible to move the hood by direct contact. The distribution plate thus transmits part of the pressure force it receives on the hood.
Avantageusement, l'indicateur est une zone de couleur de bonne visibilité, qui tranche des couleurs des parties voisines du dispositif et de l'anneau, afin d'obtenir un bon contraste visuel quand le capot saute. Advantageously, the indicator is a color zone of good visibility, which slices the colors of the neighboring parts of the device and the ring, in order to obtain a good visual contrast when the cover jumps.
L'indicateur est une zone qui se démarque aisément de toutes les autres parties du dispositif, ou à tout le moins des parties voisines. Une fois visible, l'indicateur est remarquable par l'utilisateur à une distance de plusieurs mètres. La notification de l'indicateur n'est alors pas effectuée uniquement pendant une opération de vérification ou de maintenance, mais immédiatement après l'apparition de l'indicateur. Cela permet une fonction d'alerte de l'indicateur en temps réel pour l'utilisateur. The indicator is an area that easily differs from all other parts of the device, or at least neighboring parts. Once visible, the indicator is remarkable by the user at a distance of several meters. The notification of the indicator is then not performed only during a verification or maintenance operation, but immediately after the appearance of the indicator. This allows a real-time indicator alert function for the user.
Avantageusement, l'indicateur est positionné manière à être visible selon différents angles de vue du dispositif, sur une périphérie externe de la portion de levage. Advantageously, the indicator is positioned to be visible at different angles of view of the device, on an outer periphery of the lifting portion.
Des moyens de fixation pour la fixation du corps à l'élément de levage comprennent un carter configuré de manière à enserrer l'élément de levage entre le corps et ledit carter. Le carter et le corps s'étendent respectivement sur une même longueur de la partie de levage et sont de sections complémentaires, sensiblement en U, de manière à, une fois associés, entourer la partie de levage sur l'ensemble de sa périphérie. Le carter et le corps sont de préférence maintenus ensemble par complémentarité de formes (engagement mécanique positif). Le capot a préférablement une forme sensiblement en U complémentaire au carter. Une fois monté sur l'accessoire de levage, le dispositif entoure la partie de levage de l'accessoire de levage et le recouvre sur sa zone de contact avec un élément de levage. La grande surface couverte par le dispositif offre une plus grande flexibilité dans la disposition de l'indicateur. L'indicateur est disposé de manière à être visible par l'utilisateur sous un grand angle de vue et par conséquent la fonction d'alerte de sécurité du dispositif est plus efficace. On notera que l'indicateur est ainsi positionné sur la surface externe du carter, sous le capot en position initiale. L'indicateur pourrait alternativement être prévu sur le corps, en ménageant une découpe du carter entourant l'indicateur positionné sur le corps, et prévoyant une position initiale du capot couvrant l'indicateur. Fastening means for attaching the body to the lifting member comprises a housing configured to grip the lifting member between the body and said housing. The casing and the body extend respectively on the same length of the lifting part and are complementary sections, substantially U-shaped, so that, once associated, surround the lifting portion over the entire periphery. The casing and the body are preferably held together by complementary shapes (positive mechanical engagement). The cover preferably has a shape substantially U complementary to the housing. Once mounted on the lifting accessory, the device surrounds the lifting part of the lifting accessory and covers it on its contact area with a lifting element. The large area covered by the device provides greater flexibility in the arrangement of the indicator. The indicator is arranged to be visible to the user from a wide angle of view and therefore the security alert function of the device is more efficient. Note that the indicator is thus positioned on the outer surface of the housing, under the hood in the initial position. The indicator could alternatively be provided on the body, by providing a cutout of the housing surrounding the indicator positioned on the body, and providing an initial position of the cover covering the indicator.
De préférence, le capot comporte des moyens de fixation en position initiale. En position initiale, le capot est ainsi retenu de manière à ne pas être déplacé involontairement et à éviter de créer des situations de fausse alerte. Preferably, the cover comprises fastening means in the initial position. In the initial position, the hood is thus retained so as not to be moved involuntarily and to avoid creating false alarm situations.
Les moyens de fixation du capot sont préférablement des moyens de fixation par déformation élastique, le corps comportant des moyens de fixation du capot en position initiale, complémentaires à ceux du capot. Le capot est ainsi maintenu en position initiale par une fixation apte à se déformer sous l'action d'une force de pression ; et à se libérer ou à se briser pour une force de pression prédéterminée. On notera encore que d'autres moyens de fixation du corps sont envisageables. On peut par exemple fixer le corps avec des liens, par ex. auto- serrants, et placer la zone indicateur sur la partie de levage directement. Un capot en U peut alors recouvrir cette zone est être fixé sur le corps, comme c'est le cas lorsqu'on utilise un carter. Avantageusement, l'organe déformable est métallique, de manière à résister à des forces de pressions élevées qui sont des forces exercées sur l'accessoire de levage dans des cas d'utilisation normale. The fastening means of the cover are preferably fixing means by elastic deformation, the body having means for fixing the cover in the initial position, complementary to those of the cover. The hood is thus held in the initial position by a fastener adapted to deform under the action of a pressure force; and to break free or break for a predetermined pressure force. It will be noted that other means of fixing the body are possible. One can for example fix the body with links, e.g. self-tightening, and place the indicator area on the lifting part directly. A U-shaped cover can then cover this area is to be fixed on the body, as is the case when using a housing. Advantageously, the deformable member is metal, so as to withstand high pressure forces which are forces exerted on the lifting accessory in normal use cases.
Selon les variantes, l'organe déformable est venu de matière du corps, de manière à simplifier la variété des pièces du dispositif, mais aussi pour assurer une fixation optimale de l'organe déformable sur le corps qui ne sera pas modifiée par les forces induites lors de la déformation plastique de l'organe. According to the variants, the deformable member has come from body material, so as to simplify the variety of parts of the device, but also to ensure optimal fixation of the deformable member on the body which will not be modified by the forces induced during the plastic deformation of the organ.
La présente invention concerne également, un accessoire de levage comportant le présent dispositif de témoin de charge. The present invention also relates to a lifting accessory comprising the present load indicator device.
Avantageusement et de manière non limitative, l'accessoire de levage est : un anneau de levage, un crochet, un maillon ou un demi-maillon. L'invention concerne encore un anneau de levage tournant comprenant une boucle d'accrochage, montée sur un corps dans lequel un alésage est réalisé, et un organe de fixation à vis passant dans l'alésage, le présent dispositif de témoin de charge étant monté dans l'espace intérieur d'une courbure de la boucle d'accrochage éloignée du corps Advantageously and in a nonlimiting manner, the lifting accessory is: a lifting ring, a hook, a link or a half-link. The invention also relates to a rotating lifting ring comprising a catching loop, mounted on a body in which a bore is made, and a screw fastener passing through the bore, the present load indicator being mounted. in the interior space of a curvature of the hanging loop away from the body
Description détaillée à l'aide des figures Detailed description using the figures
D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée d'au moins un mode de réalisation avantageux présenté ci- dessous, à titre d'illustration, en se référant aux dessins annexés. Ceux-ci montrent :  Other features and characteristics of the invention will become apparent from the detailed description of at least one advantageous embodiment presented below, by way of illustration, with reference to the accompanying drawings. These show:
Figure 1 : une vue de face, éclatée d'un mode de réalisation, non limitatif du dispositif selon l'invention ; Figure 1 is a front view, exploded of a non-limiting embodiment of the device according to the invention;
Figure 2 : une vue de face du dispositif de la figure 1 monté sur un anneau de levage ; Figure 2 is a front view of the device of Figure 1 mounted on a lifting ring;
Figure 3 : une vue en perspective du corps du dispositif de la figure 1 ; Figure 3 is a perspective view of the body of the device of Figure 1;
Figure 4 : une vue de détail de l'organe déformable ; Figure 4: a detailed view of the deformable member;
Figure 5 : une vue en coupe V-V de la figure 2 ; Figure 5: a sectional view V-V of Figure 2;
Figure 6 : une vue en section suivant un plan d'orientation longitudinale- verticale passant par le centre de l'anneau de levage de la figure 2 ;  Figure 6: a sectional view along a longitudinal-vertical orientation plane passing through the center of the lifting ring of Figure 2;
Figure 7 : une vue de face du dispositif de la figure 1 monté sur un anneau de levage, avec le capot expulsé. Figure 7: a front view of the device of Figure 1 mounted on a lifting ring, with the hood expelled.
Dans la suite de la description, on adoptera par convention, à titre non limitatif et pour faciliter l'exposé, des orientations longitudinale, verticale, transversale indiquées par le trièdre "L,V,T", des figures. A la figure 1 on a représenté une vue éclatée du présent dispositif 10 de témoin de charge (ou dispositif de témoin de limite de charge) selon un mode de réalisation. Il comporte principalement un corps 12, un organe déformable 14 plastiquement, un indicateur 18 (ici préférablement placé sur un moyen de fixation 16) et un capot 20. Comme on le comprendra de l'exposé ci-dessous, le capot 20 cache, dans une position initiale, l'indicateur 18 ; et l'organe déformable 14 est conçu de sorte qu'au-delà d'une force prédéterminée, l'organe déformable 14 se déforme, provoquant le déplacement du capot 20 de manière à révéler au moins en partie l'indicateur 18. In the rest of the description, we will adopt by convention, without limitation and to facilitate the presentation, longitudinal, vertical, transverse orientations indicated by the trihedron "L, V, T" of the figures. In Fig. 1 there is shown an exploded view of the present charge indicator device (or charge limit indicator device) according to one embodiment. It mainly comprises a body 12, a plastically deformable member 14, an indicator 18 (here preferably placed on a fastening means 16) and a cover 20. As will be understood from the following description, the cover 20 conceals, in an initial position, the indicator 18; and the organ deformable 14 is designed such that beyond a predetermined force, the deformable member 14 is deformed, causing the displacement of the cover 20 so as to reveal at least partially the indicator 18.
Le dispositif 10 est destiné à être fixé sur un accessoire de levage 22, et plus spécifiquement à une partie de levage P de ce dernier, comme représenté à la figure 2. L'élément de levage 22 est ici un anneau de levage 22 pivotant, à double articulation. De tels anneaux pivotants sont largement connus dans le domaine et comprennent typiquement un élément tournant de forme générale annulaire, appelé anneau ou boucle d'accrochage 22i, monté sur un corps 222 dans lequel un alésage est réalisé, et un organe de fixation à vis 223 passant dans l'alésage. L'organe de fixation à vis 223 comprend une tête 22 servant de butée pour le corps 222 et une partie filetée 225 (ou taraudée) pour permettre sa fixation par vissage dans un trou taraudé ou sur une tige filetée solidaire de la charge à lever. L'anneau 22 de la figure 2 a donc un premier axe de pivotement A correspondant à l'axe de l'organe de fixation 223 ; et la boucle 22i est montée articulée sur le corps 222, définissant un deuxième axe de pivotement B, perpendiculaire au premier. The device 10 is intended to be fixed on a lifting accessory 22, and more specifically to a lifting part P of the latter, as represented in FIG. 2. The lifting element 22 is here a pivoting lifting ring 22, with double articulation. Such pivoting rings are widely known in the field and typically comprise a rotating element of generally annular shape, called a ring or catching loop 22i, mounted on a body 22 2 in which a bore is made, and a screw fixing member. 22 3 passing through the bore. The screw fastener 22 3 comprises a head 22 serving as a stop for the body 22 2 and a threaded portion 22 5 (or threaded) to allow it to be fastened by screwing into a threaded hole or onto a threaded rod secured to the load to lift. The ring 22 of Figure 2 thus has a first pivot axis A corresponding to the axis of the fastener 22 3 ; and the loop 22i is articulated on the body 22 2 , defining a second pivot axis B, perpendicular to the first.
De tels anneaux tournants, avec simple ou double articulation, sont décrits par exemple dans les EP1069067 ou EP2361870 et le dispositif 10 est destiné à être utilisé avec ce type d'anneaux, entre autres. Such rotating rings, with single or double articulation, are described for example in EP1069067 or EP2361870 and the device 10 is intended to be used with this type of rings, among others.
Le dispositif 10 est facilement adaptable à d'autres accessoires de levage, comme par exemple un crochet, un maillon (de chaîne) ou un demi- maillon. The device 10 is easily adaptable to other lifting accessories, such as a hook, a link (chain) or a half-link.
Une fois monté, le dispositif 10 a une forme globale de demi disque, vu dans le plan de l'ouverture intérieure 24 définie par la boucle d'accrochage 22i (d'orientation verticale-longitudinale en Fig.2). Once mounted, the device 10 has the overall shape of a half disc, seen in the plane of the inner opening 24 defined by the hooking loop 22i (vertical-longitudinal orientation in Fig.2).
Un accessoire de levage permet la transmission d'une force de levage destinée à déplacer une charge ou élément à lever. Les forces de levage sont généralement transmises par un autre accessoire de levage, que l'on nommera élément de levage, et accouplé au premier accessoire de levage (cet élément de levage étant relié par ex. au crochet de la machine de levage). Comme on le comprendra de la figure 2, le dispositif 10 est monté -sur la boucle de levage 22i de l'anneau 22- au niveau d'une partie qui va être sollicitée en traction par contact mécanique, au niveau d'un point, de plusieurs points, ou d'un plan, cette région étant appelée partie de levage P, et ceci par l'élément de levage accouplé à la boucle 22i (représenté en traits discontinus) transmettant la force de levage. Ici l'élément de levage schématisé est un maillon de chaîne, mais il pourrait s'agir d'un crochet, d'une élingue, etc. A lifting accessory allows the transmission of a lifting force for moving a load or element to be lifted. The lifting forces are generally transmitted by another lifting accessory, which will be called lifting element, and coupled to the first lifting accessory (this lifting element being connected for example to the hook of the hoisting machine). As will be understood from FIG. 2, the device 10 is mounted on the lifting loop 22i of the ring 22 at a part that will be subjected to tensile stress by mechanical contact at a point. several points, or a plane, this region being called lifting part P, and this by the lifting element coupled to the loop 22i (shown in broken lines) transmitting the lifting force. Here the schematic lifting element is a chain link, but it could be a hook, a sling, etc.
Pour l'anneau 22 à deux axes, la partie de levage P correspond à la partie courbée de la boucle d'accrochage 22i, distale du corps d'anneau. De manière générale, on placera donc le dispositif 10 sur une portion de levage P d'un accessoire de levage, afin d'être pris en compression entre la portion de levage et l'élément de levage transmettant la force de levage. For the two-axis ring 22, the lifting portion P corresponds to the curved portion of the hooking loop 22i, distal from the ring body. In general, therefore, the device 10 will be placed on a lifting portion P of a lifting accessory in order to be compressed between the lifting portion and the lifting element transmitting the lifting force.
Une variante possible du corps 12 du dispositif 10 est illustrée en détail à la Figure 3. Le corps 12 est une pièce en métal destinée à être fixée sur l'élément de levage 22 au niveau de la partie de levage P de la boucle 22i . Le corps 12 a sensiblement une forme de croissant, de manière à se conformer à la courbure de l'espace intérieur de la boucle d'accrochage 22i . A possible variant of the body 12 of the device 10 is illustrated in detail in FIG. 3. The body 12 is a metal part intended to be fixed on the lifting element 22 at the lifting portion P of the loop 22i. The body 12 has substantially a crescent shape, so as to conform to the curvature of the interior space of the hooking loop 22i.
Ainsi, le corps 12 est, en utilisation, positionné en compression entre l'accessoire de levage 22 et l'élément de levage. Le corps 12 subit une force de pression/compression égale à la force de traction exercée sur l'élément de levage 22. Thus, the body 12 is, in use, positioned in compression between the lifting accessory 22 and the lifting element. The body 12 undergoes a pressure / compression force equal to the tensile force exerted on the lifting element 22.
Le corps 12 comporte une surface d'appui 26 venant en contact avec l'élément de levage 22. La face d'appui 26 a une forme complémentaire de l'élément de levage 22. Ici, la face d'appui 26 comprend donc une gorge 28 qui épouse la courbure de la boucle 22i de l'anneau, ce qui permet de mieux répartir les forces exercées sur le dispositif 10 vers l'élément de levage. The body 12 comprises a bearing surface 26 coming into contact with the lifting element 22. The bearing face 26 has a shape complementary to the lifting element 22. Here, the bearing surface 26 thus comprises a groove 28 which matches the curvature of the loop 22i of the ring, which allows to better distribute the forces exerted on the device 10 to the lifting element.
Comme représenté à la figure 5, la section transversale de la gorge 28 est sensiblement en forme de U, de manière à entourer une partie, par ex. environ une moitié, de la périphérie de la boucle d'accrochage 22i . Le corps 12 comporte aussi avantageusement deux extrémités de positionnement 30. Les extrémités de positionnement sont en métal plein et disposées de part et d'autre du corps 12. As shown in FIG. 5, the cross section of the groove 28 is substantially U-shaped so as to surround a portion, e.g. about one half, from the periphery of the hooking loop 22i. The body 12 also advantageously comprises two positioning ends 30. The positioning ends are made of solid metal and arranged on either side of the body 12.
Chaque extrémité de positionnement 30 comporte une face intérieure 32 dans un plan d'orientation verticale-transversale tourné vers l'espace entre les extrémités de positionnement 30. Each positioning end 30 has an inner face 32 in a vertical-transverse orientation plane facing the space between the positioning ends 30.
Entre les extrémités de positionnement 30, le corps 12 comporte une partie de base 34 qui relie de matière les extrémités 30. La partie de base 34 est donc positionnée centralement dans le corps 12 et définit partiellement la face d'appui 26. La partie de base 34 comprend une face de support 38 dans un plan d'orientation longitudinale-transversale, opposée à la face d'appui 26, et deux faces latérales 36 dans des plans d'orientation verticale-longitudinale, qui lient les faces d'appui 26 et de support 38. Between the positioning ends 30, the body 12 comprises a base portion 34 which connects the ends 30 of material. The base portion 34 is thus positioned centrally in the body 12 and partially defines the bearing face 26. The part of base 34 comprises a support face 38 in a longitudinal-transverse orientation plane, opposite to the bearing face 26, and two lateral faces 36 in vertical-longitudinal orientation planes, which connect the bearing faces 26 and support 38.
La partie de base 34 comporte aussi des moyens de fixation 40 du capot 20. Les moyens de maintien 40 sont positionnés sur les faces latérales 36, de part et d'autre de la partie de base 34. The base portion 34 also comprises fastening means 40 of the cover 20. The holding means 40 are positioned on the lateral faces 36, on either side of the base portion 34.
Les moyens de maintien 40 sont ici venus de matière du corps 12, et se présentent comme deux saillies triangulaires comportant une face inférieure 42 dans un plan d'orientation transversale-longitudinale. Le corps 12 porte aussi l'organe déformable 14. L'organe déformable 14 est agencé sur le corps 12 contre la face support 38, opposée à la face d'appui 26. L'organe déformable 14 est préférablement venu de matière du corps 12, au niveau de la face support 38. The holding means 40 are here made of material of the body 12, and are presented as two triangular projections having a lower face 42 in a transverse-longitudinal orientation plane. The body 12 also carries the deformable member 14. The deformable member 14 is arranged on the body 12 against the support face 38, opposite to the bearing face 26. The deformable member 14 is preferably made of body material 12 at the support surface 38.
La figure 4 illustre en détail une réalisation possible de l'organe déformable 14 agencé sur la base 34. Il comprend un ensemble de lames métalliques 44 déformables, qui s'étendent parallèlement et sensiblement perpendiculairement à la surface support 38 de la base 34. L'ensemble de lames métalliques 44 est configuré pour se déformer à partir d'une valeur seuil prédéterminée de force de pression, notée Fs, exercée, en compression, sur celui-ci. La conception du dispositif est telle que la déformation plastique de l'organe déformable, c'est-à-dire l'écrasement des lames, va engendrer la libération du capot 20. Le seuil prédéterminé Fs, au-dela duquel l'organe déformable se déforme plastiquement, est déterminé par conception, à toute valeur souhaitée par le fabricant. Comme on le comprendra, une fois que l'organe déformable 14 a subit une déformation plastique, il ne peut pas reprendre sa configuration initiale. Ce caractère d'usage unique est un gage de sécurité. FIG. 4 illustrates in detail a possible embodiment of the deformable member 14 arranged on the base 34. It comprises a set of deformable metal blades 44, which extend parallel and substantially perpendicular to the support surface 38 of the base 34. assembly of metal blades 44 is configured to deform from a predetermined threshold value of pressure force, denoted Fs, exerted, in compression, thereon. The design of the device is such that the plastic deformation of the deformable member, that is to say the crushing of the blades, will generate the release of the cover 20. The predetermined threshold Fs, beyond which the deformable member deforms plastically, is determined by design, at any value desired by the manufacturer. As will be understood, once the deformable member 14 has undergone plastic deformation, it can not resume its initial configuration. This unique use character is a guarantee of security.
Chaque lame 44 s'étend respectivement depuis la face 38 opposée à la face d'appui 26, jusqu'à une plaque de distribution 48. Ici, chaque lame 44 s'étend de manière non limitative perpendiculairement à la face support 38 de la base 34, de sorte à être sensiblement parallèle à la direction de compression de l'organe 14 (soit dans la figure selon la direction verticale V). Selon les variantes, les lames 44 peuvent s'étendre selon une autre direction. En outre, l'organe de compression peut prendre une forme différente : il peut s'agir d'un ensemble d'élément déformables plastiquement en zig-zag, ou un ensemble de mini-colonnes déformables, par exemple à base carrée. Each blade 44 extends respectively from the face 38 opposite to the bearing face 26, to a distribution plate 48. Here, each blade 44 extends in a nonlimiting manner perpendicularly to the support face 38 of the base 34, so as to be substantially parallel to the compression direction of the member 14 (in the figure in the vertical direction V). According to the variants, the blades 44 can extend in another direction. In addition, the compression member may take a different shape: it may be a set of plastically deformable element zig-zag, or a set of deformable mini-columns, for example square base.
Traditionnellement, un accessoire de levage est conçu pour une charge de fonctionnement donnée, qui est communiquée comme la charge maximale d'utilisation CMU. Le fabriquant prévoit toutefois une marge de sécurité en appliquant un coefficient lors de la conception (par ex 2,3 ou 4 fois la CMU). Si la force appliquée sur l'accessoire de levage excède les coefficients de sécurité, elle provoque une déformation plastique de celui-ci. Une fois l'accessoire déformé plastiquement, ses propriétés mécaniques sont modifiées. L'accessoire ne peut donc plus supporter la même charge avant de se déformer de nouveau ou même de casser. Les nouvelles propriétés de l'accessoire de levage ne sont pas prévisibles, et le risque de casse est difficile à évaluer. Pour des raisons de sécurité, il est important de ne plus utiliser un accessoire de levage une fois qu'il a subi une première déformation plastique. Traditionally, a lifting accessory is designed for a given operating load, which is reported as the maximum usable load CMU. However, the manufacturer provides a margin of safety by applying a coefficient during the design (eg 2.3 or 4 times the CMU). If the force applied to the lifting accessory exceeds the safety factors, it causes a plastic deformation thereof. Once the accessory deformed plastically, its mechanical properties are modified. The accessory can no longer support the same load before deforming again or even breaking. The new properties of the lifting accessory are not predictable, and the risk of breakage is difficult to evaluate. For safety reasons, it is important not to use a lifting accessory once it has undergone a first plastic deformation.
On peut donc définir le seuil Fs de sorte que le dispositif 10 se déclenche avant d'atteindre une force FD entraînant la déformation de l'anneau lui-même (donc au-delà des coefficients de sécurité). Pour un bon fonctionnement du dispositif 10, l'ensemble de lames 44 est dimensionné de manière à ce qu'il soit déformé et éjecte le capot 20 pour une valeur seuil de force de pression Fs appliquée, qui n'excède pas la force FD. En pratique, la valeur seuil Fs correspond à une force supérieure à la force appliquée sur l'accessoire de levage pour une utilisation normale de celui-ci (au-delà donc de la CMU), et restant dans la marge de sécurité (donc inférieur à FD). It is therefore possible to define the threshold Fs so that the device 10 is triggered before reaching a force F D causing the deformation of the ring itself (hence beyond the safety coefficients). For a good functioning of the device 10, the set of blades 44 is dimensioned so that it is deformed and ejects the cover 20 for a threshold value of pressure force Fs applied, which does not exceed the force F D . In practice, the threshold value Fs corresponds to a force greater than the force applied to the lifting accessory for normal use thereof (beyond the CMU), and remaining within the safety margin (therefore below at FD).
Ainsi, l'accessoire de levage peut être préservé et utilisé avec un nouveau dispositif 10 après remplacement du dispositif comportant l'ensemble de lames entièrement déformé. On notera toutefois que si le dispositif 10 se déclenche, il est recommandé de faire vérifier l'accessoire de levage par un expert pour s'assurer de son intégrité.  Thus, the lifting accessory can be preserved and used with a new device after replacing the device with the fully deformed blade assembly. Note however that if the device 10 is triggered, it is recommended to have the lifting accessory checked by an expert to ensure its integrity.
La plaque de distribution 48 est une plaque métallique qui comporte une face intérieure 50 fixée à l'ensemble de lames métalliques 44 et une face extérieure 52 configurée pour être en contact avec l'élément de levage accouplé à l'anneau de levage. La face extérieure 52 peut être de forme complémentaire à l'accessoire de levage. The distribution plate 48 is a metal plate which has an inner face 50 attached to the metal blade assembly 44 and an outer face 52 configured to be in contact with the lifting member coupled to the lifting ring. The outer face 52 may be of complementary shape to the lifting accessory.
La plaque de distribution 48 est placée entre les faces intérieures 32 des extrémités de positionnement 30 du corps 12. Les faces intérieures 32 constituent des butées en déplacement longitudinal de la plaque de distribution 48. The distribution plate 48 is placed between the inner faces 32 of the positioning ends 30 of the body 12. The inner faces 32 constitute stops in longitudinal displacement of the distribution plate 48.
La plaque de distribution 48 n'est idéalement pas déformable sous l'action d'une force de levage (en tous cas pour des forces inférieures à Fs). De cette manière, même après déformation de l'ensemble de lames déformables 44, le contact entre le dispositif et l'accessoire de levage reste inchangé. Un contact prédéfini entre le dispositif 10 et l'accessoire de levage permet d'avoir un comportement prévisible en déformation des lames déformables 46 et, de simplifier le dimensionnement des pièces du dispositif. The distribution plate 48 is ideally not deformable under the action of a lifting force (in any case for forces below Fs). In this way, even after deformation of the set of deformable blades 44, the contact between the device and the lifting accessory remains unchanged. A predefined contact between the device 10 and the lifting accessory makes it possible to have a predictable behavior in deformation of the deformable blades 46 and to simplify the dimensioning of the parts of the device.
La plaque de distribution 48 comporte aussi des rebords 54 faisant saillies transversalement de part et d'autre du corps 12. Les rebords 54 sont destinés à venir en contact avec le capot 20 et constituent ainsi des surfaces d'actionnement du capot 20. Dans la position initiale, on peut préserver un léger jeu entre les rebords 54 et le capot, afin de tenir compte des éventuelles tolérances de fabrication et déformation de l'organe 14 avant d'atteindre le seuil Fs. Pour la fixation du dispositif 10, des moyens de fixation 16 sont prévus, lesquels comprennent un carter 58 qui permet le maintien du dispositif 10 autour de l'accessoire de levage 22. La surface d'appui 26 du corps 12 comporte deux bordures 56, qui sont situées transversalement de part et d'autre de la gorge 28 pour l'élément de levage, et sont en contact avec le carter 58. The distribution plate 48 also has flanges 54 protruding transversely on either side of the body 12. The flanges 54 are intended to come into contact with the cover 20 and thus constitute surfaces In the initial position, it is possible to preserve a slight clearance between the flanges 54 and the cover, in order to take into account any manufacturing tolerances and deformation of the member 14 before reaching the threshold Fs. For fixing the device 10, fastening means 16 are provided, which include a housing 58 which allows the device 10 to be held around the lifting accessory 22. The bearing surface 26 of the body 12 has two edges 56, which are located transversely on both sides of the groove 28 for the lifting element, and are in contact with the housing 58.
Le carter 58 est préférablement une pièce en matériau plastique, rigide, de forme complémentaire à celle de l'accessoire de levage 22 au niveau de sa partie de levage P. Le carter 58 à une section transversale sensiblement en forme de U, comme représenté à la figure 5. Le carter 58 est ainsi apte à entourer une partie, par ex. environ une moitié, de la périphérie de l'accessoire de levage. The casing 58 is preferably a piece of rigid plastic material, complementary in shape to that of the lifting accessory 22 at its lifting portion P. The housing 58 has a substantially U-shaped cross section, as shown in FIG. Figure 5. The housing 58 is thus able to surround a part, e.g. about a half, from the periphery of the lifting accessory.
Le carter 58 comporte une face intérieure 60 en contact avec la boucle d'accrochage 22i, et une face extérieure 62 opposée. The housing 58 has an inner face 60 in contact with the hooking loop 22i, and an outer face 62 opposite.
Chaque branche du U formé par le carter se termine par un bord 64 qui relie les faces intérieures 60 et extérieures 62. Ces bords 64 sont montés en contact avec les bordures 56 du corps 12. Each branch of the U formed by the housing terminates in an edge 64 which connects the inner 60 and outer 62 faces. These edges 64 are mounted in contact with the edges 56 of the body 12.
Les bords 64 du carter 58 comportent quatre terminaisons 65 en forme de crochets. Les terminaisons sont disposées symétriquement aux deux extrémités longitudinales de chaque bord 64. Les crochets 65 sont complémentaires aux extrémités de positionnement 30 du corps 12, et sont destinés à être fixés par emboîtement sur lesdites extrémités de positionnement 30 de manière à maintenir les bords 64 en contact avec les bordures 56. The edges 64 of the casing 58 comprise four endings 65 in the form of hooks. The terminations are arranged symmetrically at the two longitudinal ends of each edge 64. The hooks 65 are complementary to the positioning ends 30 of the body 12, and are intended to be fixed by interlocking on said positioning ends 30 so as to maintain the edges 64 in position. contact with edges 56.
Selon les variantes, les bords 64 et bordures 56 sont maintenues en contact par des moyens de fixation classiques, comme par exemple par emboîtement élastique, par des systèmes vis écrous, ou par des rivets. Le corps 12 et le carter 58, une fois associés, entourent entièrement l'accessoire de levage au niveau de la partie de levage P. Idéalement, la liaison entre le corps 12 et le carter 58 réalisent un serrage de l'accessoire de levage entre les éléments du dispositif 10. Idéalement, le carter 58 et le corps 12 sont aussi démontables. Le dispositif 10 peut ainsi être remplacé ou échangé. According to the variants, the edges 64 and edges 56 are kept in contact by conventional fastening means, for example by elastic interlocking, screw nut systems, or rivets. The body 12 and the housing 58, once associated, completely surround the lifting accessory at the lifting portion P. Ideally, the connection between the body 12 and the housing 58 realize a tightening of the lifting accessory between the elements of the device 10. Ideally, the housing 58 and the body 12 are also removable. The device 10 can thus be replaced or exchanged.
Le carter 58 comporte aussi l'indicateur 18, destiné à alerter un utilisateur du dépassement d'une charge prédéterminée sur l'accessoire de levage. L'indicateur 18 est positionné sur la face extérieure 62 du carter 58.The housing 58 also includes the indicator 18, intended to alert a user to exceed a predetermined load on the lifting accessory. The indicator 18 is positioned on the outer face 62 of the housing 58.
L'indicateur 18 est ici une zone de la face extérieure 62 qui comporte une couleur de bonne visibilité, c'est-à-dire permettant aisément de le distinguer visuellement par rapport aux couleurs voisines ou des autres pièces du dispositif 10. Idéalement, l'indicateur 18 comporte donc une couleur tranchante du carter et du capot (qui sont de préférence de même couleur). Ici, l'indicateur 18 est de couleur vive et fluorescente, comme par exemple jaune fluorescent, ou orange fluorescent. The indicator 18 is here an area of the outer face 62 which has a color of good visibility, that is to say, making it easy to distinguish visually from neighboring colors or other parts of the device 10. Ideally, indicator 18 therefore has a sharp color of the housing and the cover (which are preferably the same color). Here, the indicator 18 is bright and fluorescent color, such as fluorescent yellow or fluorescent orange.
Par exemple, l'anneau de levage peut avoir une boucle d'accrochage de couleur orange, rouge, rose ou jaune, le carter une couleur verte, et l'indicateur une couleur rouge ou orange vive ou fluo. For example, the hoist ring may have an orange, red, pink or yellow hook-and-loop fastener, the casing a green color, and the indicator a bright red or orange or fluo color.
L'indicateur 18 occupe une zone qui s'étend au moins sur tout un pourtour transversal du carter 58 en U, reliant les bords 64 du carter 58. De cette manière, l'indicateur 18 est susceptible d'être visible suivant un large angle d'observation du dispositif 10, idéalement couvrant sensiblement plus d'une demi-sphère autour du dispositif 10. The indicator 18 occupies an area that extends at least over a transverse periphery of the casing 58 in U, connecting the edges 64 of the housing 58. In this way, the indicator 18 is likely to be visible at a wide angle for observing the device 10, ideally covering substantially more than one half-sphere around the device 10.
L'indicateur 18 s'étend suivant une direction longitudinale sur une longueur égale à celle de la plaque de distribution 48 du corps 12, et en regard de ladite plaque de distribution 48. The indicator 18 extends in a longitudinal direction over a length equal to that of the distribution plate 48 of the body 12, and opposite said distribution plate 48.
Le dispositif 10 est conçu de sorte que l'indicateur 18 est couvert par le capot 20 en position initiale (c'est-à-dire sans déformation de l'organe 14), pour une force de pression exercée sur l'ensemble de lames 44 inférieure à la valeur seuil Fs. The device 10 is designed so that the indicator 18 is covered by the cover 20 in the initial position (that is to say without deformation of the member 14), for a pressure force exerted on the blade assembly 44 below the threshold value Fs.
Le capot 20 est une pièce en matériau plastique en forme de lame rectangulaire courbée, de largeur suivant une direction longitudinale au moins égale à celle de l'indicateur 18. Comme représenté à la figure 5, le capot 20 a une section suivant un plan d'orientation verticale-transversale en forme de U complémentaire à celle du carter 58. Ainsi, la forme générale du capot 20 épouse le pourtour du carter 58. The cover 20 is a piece of plastic material shaped curved rectangular blade, width in a longitudinal direction at least equal to that of the indicator 18. As shown in Figure 5, the cover 20 has a section along a plane of U-shaped vertical-transverse orientation complementary to that of the housing 58. Thus, the general shape of the hood 20 surrounds the periphery of the housing 58.
Le capot 20 comporte une face intérieure 66 en regard de l'indicateur 20, et une face extérieure 68 opposée. The cover 20 has an inner face 66 facing the indicator 20, and an outer face 68 opposite.
Les deux extrémités du U formé par le capot 20, comprennent deux surfaces de poussée 70. Les surfaces de poussée 70 sont planes, complémentaires des rebords 54 de la plaque de distribution 58. Pour un ensemble de lames déformables 44 non déformées, les surfaces de poussée 70 sont en contact avec les rebords 54, ou proches. Comme représenté aux figures 5 et 6, le capot recouvre alors l'ensemble de lames déformables 44, la partie de base 34 du corps 12, et l'indicateur 20. L'ensemble de lames déformables est ainsi protégé, ce qui évite l'intrusion de corps étrangers. The two ends of the U formed by the cover 20, comprise two thrust surfaces 70. The thrust surfaces 70 are flat, complementary to the flanges 54 of the distribution plate 58. For a set of deformable blades 44 undeformed, the surfaces of thrust 70 are in contact with the flanges 54, or close. As shown in FIGS. 5 and 6, the cover then covers the set of deformable blades 44, the base portion 34 of the body 12, and the indicator 20. The set of deformable blades is thus protected, which avoids the intrusion of foreign bodies.
En outre, les faces latérales 36 sont de préférence en retrait par rapport aux extrémités 30, et la zone de carter où est positionnée l'indicateur 18 est également en retrait, ce qui permet d'accueillir le capot 20 de sorte qu'il soit intégré au carter sans partie en saillie. On évite ainsi un arrachement du capot 20 lors des manipulations. In addition, the side faces 36 are preferably recessed with respect to the ends 30, and the housing area where the indicator 18 is positioned is also set back, which allows to receive the cover 20 so that it is integrated in housing without protruding part. This avoids a tear of the hood 20 during handling.
Le capot 20 comporte aussi des moyens de fixation 68 complémentaires des moyens de fixation 40 de la partie de base 34 du corps 12. Les moyens de fixation 68 permettent un blocage du capot par déformation élastique. La forme des moyen de fixation 68 vient se clipper contre les faces inférieures 42 des moyens de fixation 40 complémentaires de la partie de base 34. The cover 20 also comprises complementary fastening means 68 of the attachment means 40 of the base portion 34 of the body 12. The fastening means 68 allow the hood to be locked by elastic deformation. The shape of the fastening means 68 is clipped against the lower faces 42 of the fastening means 40 complementary to the base portion 34.
On décrira par la suite le fonctionnement du dispositif, pour lequel on peut distinguer une configuration d'utilisation normale, et une configuration d'alerte. Dans la configuration d'utilisation normale, le dispositif 10 est positionné en compression entre l'accessoire de levage 22 sur lequel il est monté, et un élément de levage qui transmet une force de levage à l'élément de levage. Le dispositif 10 est soumis à une force de pression égale à la force de levage transmise, et reste dans cette configuration tant que la force de levage transmise est inférieure au seuil Fs. Next will be described the operation of the device, for which we can distinguish a configuration of normal use, and an alert configuration. In the normal use configuration, the device 10 is positioned in compression between the lifting accessory 22 on which it is mounted, and a lifting member which transmits a lifting force to the lifting member. The device 10 is subjected to a pressure force equal to the transmitted lifting force, and remains in this configuration as long as the transmitted lifting force is below the threshold Fs.
Comme représenté à la figure 2, le capot 20 est en position initiale, dans laquelle il cache l'indicateur 20, et les surfaces de poussée 70 du capot 20 sont en contact avec les rebords 54 de la plaque de distribution 48. La configuration d'alerte est représentée en référence à la figure 7. As shown in FIG. 2, the cover 20 is in the initial position, in which it hides the indicator 20, and the thrust surfaces 70 of the cover 20 are in contact with the flanges 54 of the distribution plate 48. The alert is shown with reference to FIG.
Pour une valeur de force de pression qui dépasse le seuil Fs (flèche sur la figure 7), la plaque de distribution 48 exerce sur les éléments déformables 44 une pression qui conduit à leur déformation, écrasement : la plaque de distribution se déplace alors en direction de la base 34, et donc du capot 20. Le capot 20 est poussé par la plaque de distribution 48 au niveau des surfaces de poussée 70. For a pressure force value that exceeds the threshold Fs (arrow in Figure 7), the distribution plate 48 exerts on the deformable elements 44 a pressure which leads to their deformation, crushing: the distribution plate then moves in the direction the base 34, and therefore the cover 20. The cover 20 is pushed by the distribution plate 48 at the thrust surfaces 70.
Le capot 20 se déplace verticalement, poussé par la plaque de distribution 48 jusqu'à ce que les moyens de blocage 72 du capot 20 se déforment et se décrochent des moyens de maintien 40 du corps 12. Le capot 20 est brusquement libéré des moyens de maintien 40 ; l'indicateur 18 est alors découvert et devient visible par l'utilisateur. The cover 20 moves vertically, pushed by the distribution plate 48 until the locking means 72 of the cover 20 deform and unhook the holding means 40 of the body 12. The cover 20 is suddenly released from the means of maintaining 40; the indicator 18 is then discovered and becomes visible to the user.
Selon les variantes, les moyens de blocage 72 du capot se brisent, de manière à rendre impossible un replacement du capot 20 après dépassement du seuil Fs. Selon les variantes, le capot 20 est éjecté hors de sa position initiale pour un dépassement d'une force de pression prédéterminée. Il se déplace uniquement entre deux positions : une position dans laquelle le capot 20 cache complètement l'indicateur 18, et une position dans laquelle le capot 20 est à l'écart de l'indicateur 18 qui est entièrement visible. Le dispositif 10 permet d'alerter un utilisateur de manière efficace de l'occurrence d'une surcharge sur l'accessoire de levage 22. According to the variants, the locking means 72 of the cover break, so as to make it impossible to replace the cover 20 after exceeding the threshold Fs. According to the variants, the cover 20 is ejected out of its initial position for exceeding a predetermined pressure force. It moves only between two positions: a position in which the cover 20 completely hides the indicator 18, and a position in which the cover 20 is away from the indicator 18 which is fully visible. The device 10 makes it possible to alert a user effectively of the occurrence of an overload on the lifting accessory 22.
Concernant les matériaux, le corps 12 est de préférence réalisé d'une seule pièce (monobloc) avec l'organe déformable, dans tous matériaux appropriés pour l'usage envisagé, notamment concernant la résistance aux contraintes mécaniques appliquées au dispositif en utilisation et la déformation de l'organe déformable. Pour des seuil de déclenchement Fs élevé, on se utilisera généralement un métal, par ex. acier, titane ou tous alliages appropriés. La fabrication du corps avec l'organe déformable peut se faire par usinage, injection ou impression 3D (construction additive). Pour des charges moins importantes on pourra envisager de réaliser l'ensemble corps/organe déformable en matière plastique. As regards the materials, the body 12 is preferably made in one piece (monoblock) with the deformable member, in all materials suitable for the intended use, in particular as regards the resistance to mechanical stresses applied to the device in use and the deformation deformable organ. For high thresholds Fs, a metal, e.g. steel, titanium or any suitable alloys. The manufacture of the body with the deformable member can be done by machining, injection or 3D printing (additive construction). For less important loads it will be possible to make the body / deformable body assembly plastic.

Claims

Revendications claims
1 . Dispositif (10) de témoin de charge pour un accessoire de levage comprenant : 1. A load indicator device (10) for a lifting accessory comprising:
un corps (12) apte à être fixé à une partie de levage (P) d'un accessoire de levage (22) ;  a body (12) adapted to be attached to a lifting portion (P) of a lifting accessory (22);
un organe déformable plastiquement (14) associé au corps (12) et positionné de manière à se trouver, en utilisation, en compression entre ladite partie de levage (P) et un élément de levage accouplé à l'accessoire de levage (22) pour transmettre une force de levage,  a plastically deformable member (14) associated with the body (12) and positioned to be in use in compression between said lifting portion (P) and a lifting member coupled to the lifting accessory (22) for transmit a lifting force,
caractérisé en ce que le dispositif (10) comprend un capot (20) qui, dans une position initiale, cache un indicateur (18) ;  characterized in that the device (10) comprises a cover (20) which, in an initial position, hides an indicator (18);
et en ce que l'organe déformable (14) est conçu de sorte que, lorsque la force transmise excède un seuil prédéterminé (Fs), l'organe déformable (14) se déforme plastiquement et provoque le déplacement du capot (20) de manière à révéler au moins en partie l'indicateur (18).  and in that the deformable member (14) is designed such that, when the transmitted force exceeds a predetermined threshold (Fs), the deformable member (14) deforms plastically and causes the cover (20) to move at least partly revealing the indicator (18).
2. Dispositif selon la revendication 1 , caractérisé en ce que le corps (12) comprend une face d'appui (26) en contact avec la partie de levage (P), la face d'appui (26) ayant de préférence une forme complémentaire à la partie de levage (P).  2. Device according to claim 1, characterized in that the body (12) comprises a bearing face (26) in contact with the lifting portion (P), the bearing face (26) preferably having a shape complementary to the lifting part (P).
3. Dispositif selon la revendication 2, caractérisé en ce que le corps (12) comprend une partie de base (34) ayant une face définissant la face d'appui (26) et une face de support (38) face opposée à la face d'appui recevant l'organe déformable (14). 3. Device according to claim 2, characterized in that the body (12) comprises a base portion (34) having a face defining the bearing face (26) and a support face (38) opposite face to the face bearing support receiving the deformable member (14).
4. Dispositif selon la revendication 1 , 2 ou 3, caractérisé en ce que l'organe déformable plastiquement (14) comprend un ou plusieurs éléments déformables placés entre la face de support (38) et une plaque de distribution (48), destinée à être en contact avec l'élément de levage pour recevoir la force transmise par l'élément de levage, et appliquer la force de compression aux dits un ou plusieurs éléments déformables. 4. Device according to claim 1, 2 or 3, characterized in that the plastically deformable member (14) comprises one or more deformable elements placed between the support face (38) and a distribution plate (48) intended for contacting the lifting element to receive the force transmitted by the lifting element, and applying the compressive force to said one or more deformable elements.
5. Dispositif selon la revendication 4, caractérisé en ce que la plaque de distribution (48) comporte au moins une surface d'actionnement (54) apte à déplacer le capot (20) par contact. 5. Device according to claim 4, characterized in that the distribution plate (48) comprises at least one actuating surface (54) adapted to move the cover (20) by contact.
6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe déformable (14) comporte au moins une lame métallique (46) déformable plastiquement, de préférence plusieurs lames métalliques parallèles. 6. Device according to any one of the preceding claims, characterized in that the deformable member (14) comprises at least one metal blade (46) plastically deformable, preferably several parallel metal blades.
7. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'organe déformable (14) comporte un réseau de colonnes métalliques déformables plastiquement. 7. Device according to any one of claims 1 to 5, characterized in that the deformable member (14) comprises a network of plastically deformable metal columns.
8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'indicateur (18) est une zone de couleur de bonne visibilité, se distinguant des couleurs des éléments voisins du dispositif. 8. Device according to any one of the preceding claims, characterized in that the indicator (18) is a color area of good visibility, distinguished from the colors of the neighboring elements of the device.
9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par des moyens de fixation (16) pour la fixation du corps (12) à l'élément de levage (22), comprenant un carter (58) configuré de manière à enserrer l'élément de levage (22) entre le corps (12) et ledit carter (58). 9. Device according to any one of the preceding claims, characterized by fixing means (16) for fixing the body (12) to the lifting element (22), comprising a housing (58) configured to grip the lifting element (22) between the body (12) and said housing (58).
10. Dispositif selon la revendication 9, caractérisé en ce que le carter (58) et le corps (12) s'étendent respectivement sur une même longueur de la partie de levage (P) et sont de sections complémentaires, sensiblement en U, de manière à, une fois associés, entourer la partie de levage ; le carter (58) et le corps (12) étant préférablement maintenus ensembles par complémentarité de formes. 10. Device according to claim 9, characterized in that the housing (58) and the body (12) extend respectively on the same length of the lifting portion (P) and are complementary sections, substantially U-shaped, of so, once associated, surround the lifting part; the housing (58) and the body (12) being preferably held together by complementarity of shapes.
1 1 . Dispositif selon les revendications 9 ou 10 caractérisé en ce que le capot (20) a une forme sensiblement en U complémentaire au carter (58). 1 1. Device according to claims 9 or 10 characterized in that the cover (20) has a substantially U-shaped complementary to the housing (58).
12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le capot (20) comporte des moyens de fixation (72) en position initiale, qui coopèrent avec des moyens de fixation prévus sur le corps (40) pour le maintien en position initiale du capot (20) ; que les moyens de fixation (72) du capot (20) étant préférablement des moyens de blocage par déformation élastique. 12. Device according to any one of the preceding claims, characterized in that the cover (20) comprises fixing means (72) in the initial position, which cooperate with fastening means provided on the body (40) for maintaining in the initial position of the hood (20); that means of fixing (72) of the cover (20) being preferably locking means by elastic deformation.
13. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce l'organe déformable (14) est venu de matière du corps (12), de préférence en métal. 13. Device according to any one of the preceding claims, characterized in that the deformable member (14) is of body material (12), preferably of metal.
14. Accessoire de levage (22) comportant un dispositif (10) de témoin de charge selon l'une quelconque des revendications précédentes, l'accessoire de levage étant en particulier un anneau de levage, un crochet, un maillon ou un demi-maillon. Lifting accessory (22) having a load indicator device (10) as claimed in any one of the preceding claims, the lifting accessory being in particular a hoisting ring, a hook, a link or a half-link. .
15. Anneau de levage tournant comprenant une boucle d'accrochage (22i), montée sur un corps (222) dans lequel un alésage est réalisé, et un organe de fixation à vis (223) passant dans l'alésage, un dispositif de témoin de charge selon l'une quelconque des revendications 1 à 13 étant monté dans l'espace intérieur d'une courbure de la boucle d'accrochage éloignée du corps. 15. A rotating lifting ring comprising a hooking loop (22i), mounted on a body (22 2 ) in which a bore is made, and a screw fixing member (22 3 ) passing through the bore, a device of charge indicator according to any one of claims 1 to 13 being mounted in the interior space of a curvature of the attachment loop away from the body.
EP17734712.7A 2016-06-30 2017-06-28 Load indication device, in particular for a lifting ring Withdrawn EP3478622A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16177296.7A EP3263505B1 (en) 2016-06-30 2016-06-30 Load control device, in particular for a lifting ring
PCT/EP2017/065993 WO2018002136A1 (en) 2016-06-30 2017-06-28 Load indication device, in particular for a lifting ring

Publications (1)

Publication Number Publication Date
EP3478622A1 true EP3478622A1 (en) 2019-05-08

Family

ID=56292532

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Application Number Title Priority Date Filing Date
EP16177296.7A Active EP3263505B1 (en) 2016-06-30 2016-06-30 Load control device, in particular for a lifting ring
EP17734712.7A Withdrawn EP3478622A1 (en) 2016-06-30 2017-06-28 Load indication device, in particular for a lifting ring

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16177296.7A Active EP3263505B1 (en) 2016-06-30 2016-06-30 Load control device, in particular for a lifting ring

Country Status (2)

Country Link
EP (2) EP3263505B1 (en)
WO (1) WO2018002136A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL428916A1 (en) * 2019-02-14 2020-08-24 Łaszkiewicz Grzegorz PROTEKT Fall indicator

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1060483A (en) * 1975-05-01 1979-08-14 American Hoist And Derrick Company Load indicating apparatus
US4052357A (en) 1976-05-19 1977-10-04 Dow Corning Corporation High modulus silicone rubber
US4131050A (en) * 1977-07-05 1978-12-26 The Solon Manufacturing Company Visual load indicator
US4578941A (en) 1984-08-27 1986-04-01 Emerson Electric Co. Load carrying device
JP2676101B2 (en) * 1988-04-21 1997-11-12 株式会社富士製作所 Overload alarm device such as winch
JP2688159B2 (en) * 1993-03-15 1997-12-08 株式会社キトー Overload detection device
ES2249877T3 (en) 1999-07-09 2006-04-01 S.H.B.L. ARTICULATED RING FOR THE ELEVATION OF LOADS.
CN1887679A (en) * 2006-06-30 2007-01-03 胡长聚 Weighing hook
NL2000139C2 (en) 2006-07-11 2008-01-14 Partners Voor Strategie & Man Hoisting device with overload detection.
EP2361870A1 (en) 2010-02-25 2011-08-31 Stamperia Carcano Giuseppe S.p.A. Eyebolt lifting provided with unscrewing device
FR2979624B1 (en) * 2011-09-02 2013-08-23 Aircelle Sa DEVICE FOR HANDLING A LOAD
US9067766B1 (en) 2013-09-16 2015-06-30 Jergens, Inc. Hoisting device and system and method for using the same
FR3012802A1 (en) * 2013-11-06 2015-05-08 Edmond Altabe ROTATING AND ARTICULABLE ANSE

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Publication number Publication date
EP3263505B1 (en) 2019-10-23
EP3263505A1 (en) 2018-01-03
WO2018002136A1 (en) 2018-01-04

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