FR2839961A1 - Tool for handling long and heavy metal profiles has rigid body with inner cavity for profile and two mobile hooks that grip profile when inside - Google Patents

Abstract

The tool, for use e.g. on a crane or gantry, consists of a rigid body (12) with an inner cavity (18) to receive a metal profile (1) such as a length of rail. The lower part of the body has an opening (20) giving access to the cavity, and its sides have one or more hooks (30) that can move between open and closed positions in which the profile can pass through the cavity opening and be locked inside it respectively. The movement of the hooks is controlled by closed (34) and open-ended (36) slots on the hooks interacting with studs (26, 28) on the tool body as thrust surfaces (40, 42) on the tips (38) of the hooks interact with the surfaces of the profile.

Description

displacement according to any one of claims 1 to 7.

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  The present invention relates to a handling tool for a profile.

  Such tools are commonly used to grab, lift and move very long and heavy profiles. They are fixed at the end of cranes, gantry cranes, rolling poets or lorries, that is to say small four-wheeled carts constitute a flat wagon. In addition to slings, chains or cables, it is commonly used today as tools for handling profile parts. The two branches of one of these pieces form an articulated structure which exerts a clamping force on a profile disposed between these branches of the vertical lifting of the structure, due to the weight of the profile. The clamping force exerted by the branches stops as soon as the profile is resting on the ground, allowing

  branches of the piece to open and release the profile.

  This type of tool, in particular the profile part mentioned above, has a large number of drawbacks: the load is not always stabilized, this load being liable to turn on itself when it is lifted and its displacement; the tools occupy space in height, which means, in order to overcome an obstacle, to produce a lifting force which is oversized compared to the height actually reached by the raised profile; during an impact or a collision with a surrounding obstacle, this type of tool, in particular the profile piece, can open and cause the load to drop suddenly, which poses risks to

operators and equipment.

  The present inventn aims to provide a tool which eliminates the risk of dropping the profiles during handling and to ensure their maintenance so that it is easy to position them in their location

  of arrival, limiting as much as possible the lifting effort required.

  To this end, the invention relates to a handling tool for a profile, comprising a rigid body which internally delimits a space for receiving the profile, of dimensions greater than those of the cross section of the profile or of the profile part to to grasp, and which is open along its periphery by providing an access passage to the reception space to introduce the profile inside said space; at least one hook movable relative to said body between a closed position in

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  which the hook or hooks at least partially close the access passage so as to prevent the free passage of the profile between the reception space and the outside, and an open position in which the hook or hooks are sufficiently windy clearances of the access passage to allow free passage of the profile to or from the reception space; and means for locking the

  hook in its closed position.

  According to other characteristics of this tool, taken in isolation or in all technically possible combinations: - the or each hook is articulated on the rigid body between its open position and an intermediate position from which the or each hook is substantially guided in translation relative to the body to its closed position; - The or each hook has a cam surface for the profile when the or each hook passes from its open position to its intermediate position; The axis of articulation of the check or hook with respect to the rigid body A is formed by a first lug secured to one of the body and the corresponding hook, and a guide groove in said lug is provided in

  the other of the body and the hook correspond.

  - The locking means comprise at least a second lug secured to one of the body and or one of the hooks, and a recess in the other of the body and the corresponding hook; - The or each recess provides a ramp surface for the second lug, adapted to cause the clamping of the profile by the hook (s) during the displacement of the profile by the tool; - The check hook has a first projection which extends across the access passage when the corresponding hook is in the closed position, and which presents a bearing surface for an associated surface of the profile when the profile is moved by the tool; - The or each bearing surface is substantially complementary to said associated surface of the profile; - The or each hook has a second projection which extends inside the receiving space when the hook is in the position of

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  closure, and which provides a stop surface for the profile opposing the tilting of said profile when it is moved by the tool; The tool comprises at least one pad of hooks arranged on either side of the rigid body and rigidly connected to one another; and S - the rigid body has a projection directed towards the reception space, which partially delimits the access passage and which presents a bearing surface for an associated surface of the profile when moving to said profile

by the tool.

  The invention will be better understood on reading the description which will

  follow, given only by way of example and made with reference to the drawings in which: - Figure 1 is a view both in elevation of a handling tool according to the invention and in cross section of a profile , cable using this tool; - Figures 2A to 2H show schematic views of the tool of Figure 1, representing successive states of use of this tool on the profile of - Figure 1; Figure 3 is a view similar to that of Figure 1, of an alternative embodiment of a tool according to the invention engaged with a T-section profile; - Figures 4A to 4H are views similar to those of Figures 2A to 2H, illustrating a second embodiment of the tool according to the invention; and - Figure 5 is a view similar to that of Figure 4H, of a variant

  of the second embodiment of a tool according to the invention.

  In Figure 1 wind represented side by side a profile 1 and a tool 10 of

handling of profile 1.

  Profile 1 is for example a railroad, and is formed by a head 2 and a foot 4 intended to be fixed to the ground. The head 2 is of width noted L and of height noted E. The head 2 is connected to the foot 4 by forming surfaces

  inclined 6. The foot 4 consists of a vertical veil 5 and a sole 7.

  The tool 10 comprises a rigid body 12 in one piece and of general U-shape returned. More precisely, this body 12 comprises two wings 14 substantially parallel and vertical, spaced from each other by a distance slightly greater than the width L of the profile 1. These wings 14 wind rigidly connected to each other by a horizontal core 16, extending between the

  wings, perpendicular to these backs.

  The body 12 thus internally delimits a space 18 intended to receive the head 2 of the profile 1. The outline of this space is formed by the inner peripheral edges of the wings 14 and of the core 16. This space 18 is open to the exterior by a passage 20 formed between the free ends opposite the wings 14. This passage 20 is intended for permeKre ['introduction of the profile 1

inside space 18.

  The core 16 is provided at mid-length with a shackle 22, fixedly attached to the core of the body by a pin 24 which passes through a corresponding bore in the core. The shackle 22 is intended to receive a lifting member, for example a cable or a chain, connected to a gantry of the lorry type capable of transmitting a sufficient lifting effort. On each face of wing check 14 (only one face of the body 12 is visible in FIG. 1) fixed wind two cylindrical pins, upper 26 and lower 28, arranged substantially perpendicular to each other in the direction

longitudinal of the wings 14.

  The tool 10 also comprises two pads of hooks 30 displaced, manually wired, the two hooks of the same pad being located on the two faces of the body 12 and rigidly connected to each other, for example by

welded hoops 32.

  Each pad of hooks 30 is carried by one of the two wings 14 of the body, while being movable relative to this wing. More precisely, each hook 30 of the same pad has on the one hand, in its upper part, a longitudinal groove 34, of oblong shape, adapted to receive and guide one of the upper nipples 26, and on the other hand, to its lower extremity,

  a notch 36 adapted to receive and guide one of the lower pins 28.

  The groove 34 is of firm contour, so that the associated teton 26 cannot exit therefrom, while the notch 36 opens towards the teas, so that the associated teton 28 can come out of it Each hook 30 is in the form of a plate generally substantially rectangular in shape and substantially the same dimension as a wing 14, with the difference that it carries a protrusion 38, extending in projection

  transversely to the longitudinal direction of the hook, towards space 18.

  Each protrusion has an upper surface 40 intended to form a support for the profile 1. This surface 40 is substantially complementary to one of the inclined surfaces 6 connecting the head 2 to the foot 4 of the profile 1. Each protrusion 38 has on the other hand a curved lower surface 42, substantially cylindrical. The contour of this surface 42 follows an arc of a circle approximately centered on the center of curvature of the lower part of the oblong groove 34, the lower surface 42 extending up to

notch 36.

  Each hook 30 is thus movable relative to the wing 14

  corresponding, between a closed position and an open position.

  When the hooks 30 wind in the open position, as shown on the left part of the tool 10 in FIG. 1, the longitudinal direction of each hook 30 is offset angularly with respect to that of the wing 14, the upper studs 26 wind located in the lower parts of the grooves 34, and the lower pins 28 are arranged opposite the surfaces 42 of the protrusions 38. The access passage 20 then communicates freely with the reception space 18, so that the free passage of the profile 1 between

  space 18 and outside is possible.

  When the hooks 30 are in the closed position, as shown on the right part of the tool 10 in FIG. 1, the longitudinal direction of each hook is substantially parallel to that of the wing 14, the upper studs 26 are located in the upper parts of the grooves 34, and the lower studs 28 vent re, cus at the bottom of the notches 36 so as to lock the hooks in the closed position. When the hooks 30 wind in the closed position, the excrolssances 38 at least partially close the access passage 20 of

  fa, con to prohibit the passage of the profile 1 between the space 18 and the exterior.

  Between these open and closed positions, the hooks 30 occupy an intermediate position (FIGS. 2B and 2F) allowing the hooks to be unlocked relative to the lower studs 28. In this intermediate position, the longitudinal directions of the hooks and of the wings 14 vent substantially parallel and the upper pins 26 wind located in the lower parts of the grooves 34. The protrusions 38 of the hooks wind then separated from the core 16 by a distance slightly greater than the thickness

E of profile 1.

  The operation of the tool 10, including different successive wind steps represented in FIGS. 2A to 2H, is as follows: In FIG. 2A, the hooks 30 of the tool 10 are in the closed position. To pass from this position to the intermediate position, the hooks 30 wind slides upward relative to the wings 14, the upper studs 26 cooperating with the grooves 34 to guide the hooks to the position shown in FIG. 2B. When they reach the intermediate position, the hooks can be unlocked by tilting the hooks 30 around the

  upper nipples 26, as shown in Figure 2C.

  The tool 10 is then placed on the profile 1 to be moved, the head 2 of this profile being introduced, via the access passage 20, into the reception space 18, as shown in FIG. 2D, until it stops against the core 16. The hooks 30 are then closed by a reverse kinematics to that described above

  for opening, as shown in Figures 2E, 2F and 2G.

  We can then lift the tool 10, for example by pulling up on its shackle 22 (Figure 2H). The body 12 then lifts the two padres of hooks 30 by means of the upper studs 26. The profile 1 rests on the protrusions 38 of the hooks, the surfaces 40 cooperating with the

inclined surfaces 6 of the profile.

  During the displacement of the profile 1 by the tool 10, the risks of dropping wind minimal since the weight of the profile acts on the surfaces 40

  hooks in blocking last in closed position.

  Furthermore, the locking of the hooks 30 on the body 12 prevents them from opening even in the event of a reduction or even elimination of the application of the weight of the profile, such as for example when meeting a

  obstacle by the profile on the occasion of its displacement.

  In addition, the position of the profile relative to the tool 10 is substantially fixed during the displacement of the profile, the dimensions of the receiving space 18 preventing any significant lateral movement of the profile. Thus, the tool 10 makes it possible to position the profile 1 with certainty at its desired arrival location, for example on a railway flyway under construction or in repair.

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  Finally, the total height of the tool is close to the total height of the profile to be entered 1, while allowing that, when this profile is present inside the reception space 18, the hooks easily pass from their

  closed position at their intermediate position.

  In Figure 3 is shown a variant of a handling tool whose elements common with the tool of Figures 1 and 2A to 2H carry the

same references.

  The tool 50 is suitable for grasping and moving a profile 52 of section in

  shape of T. shape of a central core 54 and two lateral branches 56.

  The body 12 of the tool 50 comprises two wings 14A and 14B of different lengths, the wing 14A intended to be located near the lateral branches 56 of the profile being longer than the opposite wing 14B. The width of the reception space 18 defined by this body is slightly greater than the width L

of the central core 54 of the proflle.

  On the articulated wind body two padres of hooks 30A and 30B. The padre 30A is adapted to engage on the two lateral branches 56, and the padre of hooks 30B on the central core 54. Each hook 30A has a protruding protrusion 38A directed towards the hooks 30B and having an upper surface 40A d support for one of the branches

lateral 56.

  Each hook 30B has two projecting protrusions 38B1 and 38B2 directed towards the hooks 30A, spaced apart from each other by at least the thickness F of the central core 54. Each lower protrusion 38B1 has an upper surface 40B d support for associated surfaces 58, carried by one of the lateral branches 56 and by the central core 54. Check upper protrusion 38B2, more travel than the lower protuberances 38B1, has a lower surface 44B of abutment of the central branch of the profile 52 when the tool is engaged on the profile 52. These surfaces 44B are adapted to prevent the profile from tilting during its displacement

by tool.

  The padre hooks 30A and 30B are, in the same way, con that for the tool 10 of Figures 1 and 2A to 2H, movable relative to the body 12, so as to occupy respectively an open position (not shown) allowing [ introduction of the profile 52 inside the reception space 18 and its exit

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  outside this space, a closed position (shown in FIG. 3) allowing the hooks to be locked on the body 12, and an intermediate position (not shown) allowing the hooks to be unlocked 30A

  and 30B compared to the lower nipples 28.

  S When the hooks are in the intermediate position, the distance separating the core 16 from the upper surfaces 40A of the hooks 30A is slightly greater than the thickness E of the profile, that is to say at the height of the

  two lateral branches 56 as indicated in FIG. 3.

  In this variant, the connecting hoops of the hooks of the same padre replaced by a folded plate, of cross section in shape

  of U and welded on the corresponding hooks.

  The operation of the tool 50 is substantially analogous to that of

  tool 10 and will not be detailed further.

  In FIGS. 4A to 4H is shown a second embodiment of a handling tool 110 which differs essentially from the first embodiment described hitherto by the presence of a single pad of hooks. The tool 110 is adapted for example to move the profile 1 of the

figure 1.

  More precisely, the tool 110 comprises a rigid body 1 12, substantially similar to the body 12 of the tool 10, with the difference that its wing 114B devoid of hooks has a protruding projection 115 directed towards the interior of the tool . This protuberance 115 presents an upper surface 145 of support for the profile 1, substantially complementary to the inclined surfaces 6 of the profile. The body 112 thus delimits a reception space 118 of width L ′ clearly greater than the width L of the profile, and open towards the teas via an access passage 120 delimited by the projection 115 and the opposite wing 114A. The other elements of body 112 being identical to

  those of the body of the tool 10, they bear the same references.

  On the body 112 is movably mounted a pad of hooks 130 (a single hook is visible in FIGS. 4A to 4H), functionally analogous to the hooks 30 of the tool 10, and the components of which are common with the hooks

  of tool 10 have the same references.

  Each projection 38 has, in addition to the upper support surface 40 and the lower curved surface 42, an inner lateral surface

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  146 forming a cam for profile 1. This surface is formed of zones intended to bear successively against the blank & of the head 2 of profile 1 when the corresponding hook 130 passes from its open position (FIG. 4D) to its closed position (FIG. 4G) in fa, con to cause the relative displacement

S of tool 110 and profile 1.

  The operation of the tool 110, substantially similar to that of the tool 10, is illustrated by FIGS. 4A to 4H. When the hooks pass from their open position (FIGS. 4C and 4D) to their intermediate position (FIG. 4F), the cam surface 146 causes the displacement of the tool 110 relative to the profile 1 so that the head 2 is positioned. from profile to height of growth

  and protrusions 38 of the hooks 130 (FIG. 4G).

  Tool 110 is preferred to tool 10 when the profile to be grasped is placed along an obstacle, or when the profile is to be deposited along a wall. In addition, the number of operations for handling the tool is reduced since there is no

  that a sole padre of hooks to mancouvre.

  In FIG. 5 is represented a tool 150, a variant of the tool of

Figures 4A to 4H.

  In this variant, the longitudinal axis of the notches 36 of the hooks is inclined relative to the longitudinal axis of the upper grooves 34, so as to form in each notch a ramp surface 152 directed inwards and towards the teas. In this way, when the tool is lifted substantially vertically relative to the profile 1, the latter cooperates with the cam surfaces 146 and / or the bearing surfaces 40 of the hooks 130 so as to cause the guide of lower pins 28 against the ramp surfaces 152, thus ensuring a tightening of the profile between the hooks 130 and the body 112. This arrangement of notches with inclined ramp surface is well

  understood applicable to the first embodiment of Figures 1 to 3.

  Various arrangements within the reach of those skilled in the art are also possible. For example, the 34-pin 26 groove assembly is obtained by providing one or more grooves in the body of the tool and by providing

  each hook of nipples re, cus in this or these grooves.

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Claims (11)

  1. Handling tool for a profile, comprising a rigid body (12; 112) which internally delimits a space (18; 118) for receiving the profile (1; 52), of dimensions greater than those of the cross section of the profile or of the profile part (2) to be grasped, and which is open along its periphery by providing a passage (20; 120) for access to the reception space (18; 118) to introduce the profile (1; 52) inside said space; at least one hook (30; 30A, 30B; 130) movable relative to said body (12; 112) between a closed position in which the hook (s) (30; A, 30B; 130) at least partially close the passage of 'access (20; 120) fa, con to prohibit the free passage of the profile (1; 52) between the reception space (18; 118) and the outside, and an open position in which the or hooks (30; 30A, 30B; 130) have sufficient clearance from the access passage (20; 120) to allow free passage of the profile (1; 52) to or from the reception space (18; 118; and means (28, 36) of   locking the hook (30; 30A, 30B; 130) in its closed position.   2. Tool according to claim 1, characterized in that the or each hook (30; 30A, 30B; 130) is articulated on the rigid body (12; 112) between its open position and an intermediate position from which the or each hook is guided substantially in translation relative to the body until its closed position.   3. Tool according to claim 2, characterized in that the or each hook (30; 30A, 30B; 30) has a cam surface (146) for the profile (1) when the or each hook passes from its open position to her intermediate position.   4. Tool according to one of claims 2 or 3, characterized in that   the hinge pin or check hook (30; 30A, 30B; 130) relative to the rigid body (12; 112) is formed by a first lug (26) integral with one of the body (12; 112 ) and of the corresponding hook (30; 30A, 30B; 130), and in that a groove (34) for guiding said lug (26) is formed in the other of the body and hook match.   5. Tool according to any one of the preceding claims,   characterized in that the locking means comprise at least one 11 2839961   second lug (28) integral with one of the body (12) and or one of the hooks (30; 30A, 30B; 130), and a recess (36) in the other of the body and the hook match.   6. Tool according to claim 5, characterized in that the or each recess (36) provides a ramp surface (152) for the second stud (28), adapted to cause the clamping of the profile (1) by the hook (s)   (30; 30A, 30B; 130) when the profile is moved by the tool (150).   7. Tool according to any one of the preceding claims,   characterized in that the or each hook (30; 30A, 30B; 130) has a first projection (38; 38A, 38B1) which extends across the access passage (20) when the hook corresponds (30; 30A , 30B; 130) is in the closed position, and which has a support surface (40; 40A, 40B) for an associated surface (6; 58) of the profile (1; 52) during the displacement of the profile by the tool (10; 50; 110; 150).   158. Tool according to claim 7, characterized in that the or each bearing surface (40; 40A, 40B) is substantially complementary to said   associated surface (6; 58) of the profile (1; 52).   9. Tool according to one of claims 7 or 8, characterized in that the   or each hook (30B) has a second projection (38B2) which extends inside the receiving space (18) when the hook (30B) is in the closed position, and which provides a surface (44B) stop for the profile (52) opposing the tilting of said profile during its displacement by the tool (5o).   10. Tool following any of the preceding claims,   characterized in that it comprises at least one pad of hooks (30; 30A, B; 130) arranged on either side of the rigid body (12; 112) and connected rigidly to each other.   11. Tool according to any one of the preceding claims,   characterized in that the rigid body (112) has a projection (115) directed towards the reception space (18), which partially delimits the access passage (20) and which presents a support surface (145) for an associated surface (6)