FR2800428A1 - ASSEMBLY CONSISTING OF A BODY AND AN EASILY RELEASING PIECE - Google Patents

Abstract

This trawl hatch comprises a body (1) having a wedge (4) and a cavity (5) and a wearing part (2), one of the branches (11) of which has a recess (12) conjugated with the wedge ( 4) and the other branch (14) of which has a projection (15) which comes between two support faces (6, 7) as well as between the two perpendicular support faces (8, 20). A wedge is inserted into a tunnel (19) formed in the projection (15).

Description

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  The present invention relates to assemblies consisting of a body and a wearing part. There are sets of this type, in particular in the field of fishing, for example in the form of trawl panels, in the field of public works for dredging or as an earthmoving machine, such as bulldozers and cranes and gear. with bucket possibly provided with teeth and also in the field of drilling, in particular as before drill bit and, in general, in all the technical fields where one must scrape, dig using machines which one wishes to protect elements intended for scraping or digging by a wearing part. There is already known a body provided with a wearing part which is fixed to it by welding, by bolting or by riveting. The disadvantage of these assembly methods is that the wearing part is not easily removable when there is not an adequate tool. This is how, for example,

  cannot change the wearing part of a trawl hatch without entering port.

  The invention overcomes this drawback by an assembly consisting of a body and a wearing part which can easily be changed the wearing part, after it has been worn, using a tool. very simple that we always have on boats or on construction sites and that any fisherman or worker

site knows how to handle.

  According to the invention, the body has a corner projecting from a first side and, on a second side opposite the first, a cavity defined between first and second bearing faces of a wedge which are in the same plane and a third bearing face and a fourth bearing face of the wedge which are not

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  not in this same plane. The wear part has a general L-shape, the inner face of the small branch of which has a conjugate hollow in the corner and the inner face of the large branch of which protrudes in a position such that it is placed between the first and second bearing faces when the corner is engaged in the hollow and in which is formed a tunnel. The wedge widening from one end to the other and one end of which has a section which is larger than one of the end sections of the tunnel is forced into the tunnel until the body and the part of wear be

huddled together.

  To remove the wear part from the body, using a hammer is enough to remove the wedge from the tunnel, which allows the wear part to swing around the corner and remove it. To replace another wearing part, place the corner in the cavity, tilt the new wearing part until the projection forming a tunnel comes to the other side of the body and forcefully insert using a hammer blow or other mass the wedge in the tunnel, which

  blocks the wear part on the body.

  Preferably, the third bearing face is perpendicular to the

  first and second bearing faces, which optimizes the tightening.

  According to a preferred embodiment, the wedge is in the form of a trunk

  pyramid, which also optimizes tightening.

  The invention also relates to a wearing part as defined above.

  above. Finally, the invention particularly relates to the use of an assembly according to the invention as a trawl panel, as a drill bit or

as an earthmoving machine.

  Figure 1 of the accompanying drawing is an exploded view of the bottom of a panel

trawl according to the invention.

  FIG. 2 is a perspective view of the body, FIG. 3 is a perspective view of the wearing part, and

  Figure 4 is a perspective view of the wedge.

  The panel comprises a body 1, a wearing part 2 and a shim 3.

  The alloy steel body has a corner 4 projecting from a vertical side and, on a second vertical side opposite the first, a notch 5 defined between two first and second faces 6, 7 of horizontal support for the wedge 3 which are in the same plane and a third side 8 and a fourth side 20

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  which are perpendicular to the faces 6 and 7. The notch opens downwards and laterally. The corner 4 is connected to the faces 6 and 7 by a face 9 parallel to the

  faces 6 and 7 and intended to apply to the body 1.

  The wear part has a general L-shape, the inner face 10 of the small branch 11 having a hollow 12 conjugate from the corner and the inner face 13 of the large branch 14 having a projection 15. The projection 15 has two front faces 16, 17 and an upper face 18. There is formed in the projection 15 a tunnel 19 going from the face 16 to the face 17. The tunnel 19 is in the form of a trunk of a pyramid with four edges widening from the end opening through the face 17 to the end emerging from the face 16. The length of the tunnel 19, and therefore the distance between the faces 16 and 17, is substantially

  equal to the length of the notch 5. The wear part is made of alloy steel.

  The wedge 3 widens from one end to the other, also having the shape of a trunk of a pyramid with four edges and, in the assembled state of the assembly, the wedge 3 is forced into the tunnel. 19 until the

  body 1 and the wear part 2 are clamped one against the other.

  The wedge 3 is longer than the tunnel 19 so that it protrudes from the two faces 16 and 17 and that it can thus be forcibly inserted and easily brought out by a hammer blow struck at one or the other. other of these ends and

  that it rests on faces 6 and 7.

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Claims (6)

  1. Assembly consisting of a body and a wearing part, characterized in that - the body (1) comprises a corner (4) projecting from a first side and, on a second side opposite the first, a notch (5) defined between first and second faces (6, 7) of bearing support (3) which are in the same plane and a third bearing face (8) and a fourth face (20) support of the wedge (3) which are not in this same plane, - the wear part (2) has a general L-shape, the inner face of the small branch (11) has a recess (12 ) conjugate of the wedge (4) and whose inner face (13) of the large branch (14) has a projection (15) in a position such that it comes to be placed between the first and second faces (6, 7) d 'support when the corner (4) is engaged in the hollow (12), a tunnel (19) being formed in the projection (15) - the wedge (3) which widens from one end to the other and whose one end has a larger section than one e end sections of the tunnel are forced into the tunnel until the body (1) and the workpiece   wear (2) are tight against each other.   2. Assembly according to claim 1, characterized in that the third support face (8) is perpendicular to the first and second faces (6, 7) support.   3. Assembly according to claim 1 or 2, characterized in that the   wedge (3) is in the shape of a pyramid trunk.   4. Wear part of general L shape, characterized in that the inner face (10) of the small branch (11) has a recess (12) and the face 2800428   (13) inside the large branch (14) has a projection (15) in which a tunnel (19) is formed.   5. The use of an assembly according to one of claims 1 to 3 as a trawl panel.   6. The use of an assembly according to one of claims 1 to 3 as a drill bit or as an earthmoving machine.