FR2906006A1 - Clamping collar for tubular element e.g. fluid circulating piping, has base equipped of vibration absorbing shoe that is made of plastic material e.g. neoprene, and is intercalated between base and support wall - Google Patents

Abstract

The collar (1) has a base (10) fixed on a support wall (2) e.g. pavilion wall, and a detachable spring clip (20) articulated on the base at the level of an articulation zone (4). The spring clip is assembled on the base at the level of a fixation zone (5) to clasp a tubular element e.g. piping (40). The base is equipped of a fixation shoe (30) that is made of plastic material e.g. neoprene, is intercalated between the base and the wall, where the base and the clip form semi-circular metallic collar. Portions (12, 16) of the base are coupled to the shoe and to the zones, respectively.

Description

The present invention relates to a clamp of an element

  tubular such as a pipe. There are on the market many clamps provided in particular for maintaining pipes or pipes in which for example circulates waste water, rainwater, gas or any other type of transportable fluid in this way. These collars are usually attached to a support wall such as a roof wall, building, factory, warehouse, tunnel or sewer, a bridge stack, on a vertical metal upright such as a beam or a post. However, these clamps are not entirely satisfactory because it is often necessary to add a vibration absorbing device and / or electrical insulation between the collar and the tubular member clamped.

  This attached device, which usually takes the form of a rubber band more or less wide and thin, must be properly adapted to the dimensions of both the collar and the element to be clamped, the nature of the material is the element to be clamped, the types of vibrations to be damped, etc. This is a first disadvantage because the constraints mentioned above are multiple, varied and sometimes incompatible with each other. Moreover, this intermediate band can easily come off during the installation of the clamp. So either she is damaged or she is lost. Finally, the additional cost generated by the addition of this rubber band is far from negligible, as the increase in installation time that can quickly become problematic on construction sites or thousands of collars must be posed.

An object of the present invention is therefore to solve the problems mentioned above by means of a simpler solution to implement, reliable and less expensive than those of the prior art. For this, the invention proposes to deport the vibration absorption device 35 at a shoe integral with the collar.

More specifically, the present invention relates to a clamping collar of a tubular element comprising a base intended to be fixed to a support wall, such as a wall, and a removable stirrup articulated on the base at the level of a hinge zone 5, said yoke being able to be assembled on the base at a fastening zone in order to grip the tubular element, characterized in that the base is provided with a hoof absorption of plastic vibrations adapted to be interposed between the latter and the support wall.

According to preferred embodiments of the present invention: the base and the stirrup each form a half metal semi-circular collar, the base comprising two portions connected on the one hand to the shoe and on the other hand respectively to the hinge area and the fastening area of the collar; each portion of the base is constituted by a folded iron wire on itself whose free ends curved at right angles are locked in two holes provided for this purpose in the shoe; The base and the stirrup are assembled together at the level of the fastening zone by means of a trunnion plate - each piercing of the shoe. is through and opens into two lateral grooves inclined towards edges of said shoe; - The shoe has a bearing surface intended to come into contact with the tubular element and provided with vibration absorption streaks; the bearing surface is concave with a constant radius corresponding to the radius of the tubular element to be clamped; - A nut is mounted opposite the bearing surface of the shoe, for fixing the collar on the support wall; - The shoe is traversed by a passage bore of a fixing means to the support wall, such as a threaded rod or a screw, said bore coinciding with the orifice of the nut; and the shoe is made in the form of a rigid elastomer block, such as neoprene.

The invention will now be described in more detail with reference to particular embodiments given by way of illustration only and shown in the accompanying figures in which: FIG. 1 is a sectional view of the clamping collar of the present invention in the storage position, - Figure 2 is a sectional view of the clamp in the use position, closed around a pipe, - Figure 3 is a top detail view of a zone FIG. 4 is a detail sectional view of the fixing region of the clamping collar; FIGS. 5 and 6 are perspective views of a neoprene shoe belonging to the collar of FIG. FIG. 7 is a front view of the shoe, FIG. 8 is a top view of the shoe showing a bearing surface provided with vibration absorption striations, FIG. 9 is a view from below. of the shoe representing 20 including a nut for attachment to a support wall, - Figure 10 is a longitudinal sectional view of the shoe, - Figure 11 is an enlarged detail view referenced XI in Figure 10 and showing in particular the grooves 25 of vibration absorption. FIG. 12 is a detailed view of a first base portion of the clamp, FIG. 13 is a top view of the first base portion of FIG. 12, FIG. a detail view of a second base portion of the clamping collar, and - Figure 15 is a top view of the second base portion of Figure 15. Figures 1 and 2 show a clamping collar according to The clamp 1 is of circular shape and comprises a base 10 and a stirrup 20 each forming a semi-circular collar half. The base 10 is intended to be fixed on a support wall 2, such as a building wall. For this purpose, the base 10 is provided, substantially in a central zone, with a fixing shoe 30 made of plastic, for example in the form of a rigid elastomeric block such as a neoprene. In the storage position of the collar 1 shown in FIG. 1, the stirrup 20 rests against the base 10 so as to occupy as little volume as possible. For this, the stirrup 20 and the base 10 have a substantially identical radius of curvature so that the stirrup 20 matches the concave shape of the base 10. In the position of use shown in FIG. base 10 and the stirrup 20 form a circle of diameter D 15 substantially corresponding to the diameter of a pipe 40 placed inside said collar and resting locally on a bearing surface 35 of the shoe 30. The stirrup 20 is articulated removably on the base 10 at a hinge zone 4 materialized by a hook-shaped end 21 of the stirrup 20 and the end 11 of a first portion 12 of the base 10. Substantially opposite the articulation zone 4, there is a fastening zone 5 formed by bent and parallel ends 25 and 15 respectively belonging to the stirrup 20 and to a second portion 16 of the base 10. These two ends 15 and 25 are enclosed by a screw bearing pin 50 screwed shown in more detail in Figures 3 and 4. As can be seen in Figures 3 and 12 to 15, the two portions 12 and 16 of the base 10 are each formed of a wire of 30 iron folded on itself. Thus, the portion 12 of the base 10 has a U-shaped bend at the end 11 to form the hinge zone 4 with the hook 21 of the stirrup 20. Similarly, the second potion 16 of the base 10 has a U-shaped bend at the end 15 to form the attachment zone 5 with the end 25 of the stirrup 20.

In addition, the portion 12 of the base 10 has, opposite its U-shaped end 11, two lugs 13 folded at right angles towards each other so as to be coaxial. Similarly, the second portion 16 of the base 10 has, opposite its U-shaped end 15, two lugs 17 folded at right angles towards each other so as to be coaxial. These two pairs of legs 13 and 17 respectively have spaces 14 and 18 between them (see FIGS. 12 to 15) so that each base portion has a certain elasticity at the point of the legs, this elasticity allowing, as this is indicated below, to mount or dismount the base 10 on the shoe 30. As can be seen in Figures 5 to 7, the shoe 30 is provided with holes 33 and 37 parallel to each other and directed perpendicular to the plane 1. These holes 33 and 37 respectively open into two pairs of lateral grooves 34 and 38 of the same width as the diameter of said holes. Thus, these pairs of grooves 34 and 38 form less thick areas for mounting the two portions 12 and 16 of the base 10 on the shoe 30. Advantageously, these grooves 34 and 38 are inclined towards the edges of the shoe 30 away from the bearing surface 35, as can be seen in particular in FIG. 7. The mounting of the two portions 12 and 16 of the base 10 on the shoe 30 is facilitated by the reduction in thickness provided by the 25 grooves 34 and 38. Thus, simply remove each portion 12 or 16 at the tabs 13 and 17, to place these tabs in the grooves 34 and 38 and slide them into the holes 33 and 37 respectively. Of course, the diameter of the bores 34 and 38 is intended to be equal to, or preferably slightly greater than, the diameter of the wire forming the portions 12 and 16, at least at the level of the tabs 13 and 17. As can be seen in the figures 5, 7, 8, 10 and 11, the bearing surface 35 of the shoe 30 is provided with ridges 36 parallel to one another and extending parallel to the bores 33 and 37. By way of example, these striations: 36 measure about 1 mm deep, 0.6 mm wide for the hollow portion, and 2 mm wide for the prominent portion. Furthermore, the bearing surface 35 is concave and has a curvature of radius R substantially identical to the radius of the pipe 40 to be clamped (see Figure 7). In this way, the bearing surface 35 is perfectly in contact with the pipe 40, whose outer surface it matches (see FIG. 2). Thus, the use of a plastic material having good vibration absorbing properties for producing shoe 30, such as neoprene, allows line 40 to be maintained in very good conditions, avoiding the propagation of said vibrations. In addition, this retention is reinforced by the concavity of the bearing surface 35 with the pipe 40 and by the use of narrow grooves 36 that can be crushed by the pipe 40 to prevent it from rotating axially on the pipe 40. herself. As can be seen in FIGS. 5, 6 and 10, the shoe 30 is traversed in its thickness by a smooth bore 31 intended to receive a fixing means such as a threaded rod 3 in order to firmly fix said shoe 30 on the support wall 2 provided for this purpose. Moreover, still with this in mind, the shoe 30 is provided with a nut 32 of hexagonal head type. This nut 32 makes it possible to screw the shoe 30 onto the threaded rod 3 with the aid of a suitable key before the base 10 and the stirrup 20 are mounted on said shoe 30. The use of the collar 1 according to the The present invention is as follows. The shoe 30 is screwed, via the nut 32, onto the threaded rod 3 integral with the support wall 2, for example 30 sealed therein. The threaded rod 3 thus crosses a portion of the bore 31 whose diameter is substantially the same or slightly less than that of said rod. Of course, it is preferable that the shoe has sufficient hardness to prevent it being torn either at the time of screwing, or later because of the load to bear.

Then, the two portions 12 and 16 of the base 10 are mounted on the shoe 30 by spreading them locally at the tabs 13 and 17, as explained above. This makes it possible to form a first semicircular portion of the clamping collar 1. In this position, it is important to note that the base 10 is spaced from the support wall 2. The vibrations transmitted by the support wall 2 to the pipe 40, and vice versa, therefore necessarily pass through the shoe 30. The pipe 40 can then be housed in the base 10, 10 against the bearing surface 35 of the shoe 30. Finally, the articulated removable stirrup 20 is mounted on the base 10 to form a clamping collar 1 enclosing the pipe 40. For this, the hook-shaped end 21 of the bracket 20 engages in the end 11 of the first portion 12 of the base 15 10, and the bent ends 15 and 25 are fixed to each other at the attachment zone 5 by the trunnion 50. In this way, the pipe 40 is well insulated from the support wall 2 in terms of vibration transmission.

Of course, a multitude of clamps according to the present invention can be used for each pipe. The advantages of the present solution over those of the prior art are: excellent absorption of the vibrations to which the pipe can be subjected; - possible use in seismic zone, - easy handling of the collar; - storage of the collar with significant space saving; It goes without saying that the detailed description of the subject of the invention, given solely by way of illustration, does not in any way constitute a limitation, the technical equivalents also being included in the scope of the present invention. Thus, the plastic material used to make the shoe 35 is any plastic material capable of absorbing vibrations, such as a natural or synthetic rubber, isoprene, or an elastomer, silicone or not. In addition, it is not necessary that the pipe 40 be in direct contact with the shoe 30, it can simply be clamped by the collar 1 since the vibrations are absorbed or damped anyway by said shoe 30.

Claims (10)

  1. A clamping collar (1) for a tubular element (40) comprising a base (10) intended to be fixed on a support wall (2), such as a wall, and a removable stirrup (20) articulated on the base (10) at a hinge zone (4), said yoke (20) being able to be assembled on the base (10) at a fastening zone (5) so as to enclose the tubular element (40), characterized in that the base (10) is provided with a plastic vibration absorbing shoe (30) adapted to be interposed between the latter and the support wall (2) .   2. clamping collar according to claim 1, characterized in that the base (10) and the stirrup (20) each form a semi-circular metal collar, the base comprising two portions (12, 16) connected d on the one hand to the shoe (30) and on the other hand respectively to the hinge zone (4) and to the attachment zone (5) of the collar (1).   3. clamping collar according to claim 2, characterized in that each portion (12, 16) of the base (10) is constituted by a folded iron wire on itself whose free ends (13, 17) curved at right angles are locked in two holes (33, 37) provided for this purpose in the shoe (30).   4. Clamping collar according to claim 3, characterized in that the base (10) and the stirrup (20) are assembled together at the attachment zone (5) by means of a door plate. trunnion (50).   5. Clamp according to claim 3 or 4, characterized in that each hole (33, 37) of the shoe (30) is through and opens into two lateral grooves (34, 38) inclined towards the edges of said shoe (30). ).   6. Clamping collar according to any one of the preceding claims, characterized in that the shoe (30) has a bearing surface (35) intended to come into contact with the tubular element and provided with absorption streaks. vibrations (36). 2906006 10   7. Clamping collar according to claim 6, characterized in that the bearing surface (35) is concave radius (R) constant corresponding to the radius of the tubular element to be clamped (40).   Clamping collar according to claim 6 or 7, characterized in that a nut (32) is mounted opposite the bearing surface (35) of the shoe (30) for fastening the collar ( 1) on the support wall (2).   9. Clamping collar according to claim 8, characterized in that the shoe (30) is traversed by a bore (31) for passage of a fastening means (3) to the support wall (2), such that a threaded rod or a screw, said bore (31) coinciding with the orifice of the nut (32).   10. Clamp according to any one of the preceding claims, characterized in that the shoe (30) is made in the form of a rigid elastomer block, such as neoprene.