WO2014012154A1

WO2014012154A1 - Kit with apparatus for hose emergency joining or repair

Info

Publication number: WO2014012154A1
Application number: PCT/BR2012/000453
Authority: WO
Inventors: André Schaan CASAGRANDE; Felipe Tempel STUMPF; Leandro Luis CORSO; Tales de Vargas LISBOA; Eduardo Bonadel BASSO; Luis Eduardo KOTESKI; Alexandre SCHUMACHER
Original assignee: Estevão Odone Leuck E Cia Ltda
Priority date: 2012-07-20
Filing date: 2012-11-14
Publication date: 2014-01-23
Also published as: BR102012018161B1; BR102012018161A2

Abstract

The present invention relates to an apparatus for joining or repairing hoses in an emergency, comprising at least one flange (1) with a diameter that is substantially the same as the internal diameter of a hose (4); at least one locking element (3) comprising an intermediate locking element (2); and fastening means (5) located between the locking element (3) and the flange (1).

Description

Patent Invention Descriptive Report

KIT WITH APARATE FOR UNION OR EMERGENCY REPAIR OF

Hoses

Field of the Invention

The present invention discloses an apparatus for emergency hose coupling or repair, and a method for emergency hose coupling or repair, preferably those operating under high stress. Said apparatus allows the joining of the hose ends, allowing a quick emergency repair and subsequent use of it by joining the hose ends. The present invention is in the field of hydraulic engineering.

Background of the Invention

Flexible hoses are used for a wide range of industrial, residential or commercial applications to carry liquids and gases along straight or winding paths. The differences between applications are basically in the type of fluid to be transported, which can be: solids; low or high density liquids; vapors; among others, which travel inside the hose under certain operating temperatures and pressures. There is still some specificity regarding the external environment, which can sometimes be aggressive to the hose, having variations of temperature, acidity, salinity, mechanical impacts, weather, among others.

With regard to applications and types of hoses, those intended for domestic use are some of the simplest and easiest to find and are commonly used to conduct water under moderate pressures.

A second application of hoses, which can also be commonly found, refers to those used in air conduction. compressed, where the high internal pressure is a relevant factor, such that the structural resistance of the hose becomes a fundamental requirement for its operational safety.

A third application refers to hoses used to conduct fluids under very high pressures, resulting in a pressure exerted on the inner surface of the hose much greater than the pressure exerted on the outer surface of the hose. In general, this condition occurs for hoses that carry hydraulic fluids, which are ultimately used as a form of (hydraulic) power, either for moving motors or for power transmission in hydraulic actuators.

For the latter type of hose there is a possibility that fluids under very high or very low temperatures, hydraulic oils and even toxic or carcinogenic gases may be conducted, where any leakage caused by a ruptured hose section can have a serious impact. and serious consequences for the environment or the health of people in the vicinity of the spill site.

Due to the risk caused by contact with these fluids, at the slightest sign of leakage it is necessary to interrupt its flow, in order to make the necessary repairs and to resume the system operating condition in the shortest possible time, in order to avoid damages resulting from this interruption. supply of the transported fluid.

In the case of hoses capable of withstanding specific and extreme operating conditions, as mentioned in the last application above, the cost of manufacturing and consequently selling these hoses is quite high. In addition, the variety of hose types, lengths, terminals and gauges possible on the same machine or set of equipment makes spare parts extremely expensive and unviable. Therefore, inventories are usually minimized, which makes it difficult to change out of their expected use time, when there is a small break in only a short stretch. Thus, it is necessary to provide solutions to optimize the life of this type of hoses, providing emergency repair of the section. defective, ensuring tightness and resistance to the operating conditions of the hose.

In the patent area, some documents related to this field of application were found, which will be described below.

US 5,178,421 describes an apparatus for repairing hoses by eliminating the defective portion and subsequent installation of the apparatus, which may be installed directly to the fluid source by means of a screw connection when the defective hose portion is disposed at the end. of the same. When the defective section is arranged at half the length of the hose, it is foreseen to use two devices associated with each other. Said apparatus consists of a projecting flange capable of being housed within a hose and a split clamp capable of being mounted under the outer surface of the hose, in the region where the projection occupies the interior of the same section of the hose. . The split clamp comprises ribs notched on its inner surface in order to check locking on the adapter when it is detached from the flexible hose and also to concentrate the clamp locking force on the hose.

The present invention differs from this document in that US 5,178,421 discloses an apparatus having a conventional flexible hose fixing flange, comprising a split clamp for locking the hose to the flange, but does not describe an intermediate locking element preferably comprising a cylindrical body. independent, intermediate the flange and the locking element according to the present invention. Further, said apparatus is intended for use only in conventional hoses operating with water at a weighted pressure, and does not guarantee a tightness condition for transporting gases or fluids generally under high pressure, as the subject matter of the present invention.

US 4,478,434 describes a device capable of coupling two pipe ends, the device being defined by a pipe segment having a longitudinal slot extending along its entire length. length, giving a condition of opening or closing of the pipe segment, allowing the opening and closing of the cross section of this segment and consequent variation of its diameter. The outer surface of said pipe segment comprises two "L" shaped, curved, slit-facing fins cooperatively associated by means of a screw which is capable of regulating the opening and closing of the cross section, enabling attachment to the mounting the device on the tubes in which it will be Additionally, it is envisaged to use a pair of straps aligned with the connected ends of the pipe segment to the connected pipes. The equipment also has a seal on at least one of the crack boundary surfaces.

The present invention differs from this document in that the solution proposed by US 4,478,434 requires mounting with a large number of components and of great difficulty to enable an optimal fit between the device and the pipes to be connected. Additionally, it is imperative that the pipes to be connected have the same diameter, so that the device can be equally solidary to both and, furthermore, it is necessary to use straps to guarantee the tightness of the connections of the described device, making it impossible to use them in any way. critical conditions and making it difficult to install, requiring a high maintenance time. Also, the limitation of operating pressures, and consequently the types of hoses. All these disadvantages are overcome in the present invention.

WO 2006/066328 describes method and apparatus for containing a leak in a flexible hose by installing sealing rings on the outer surface of the hose near the leak region. Cooperatively with said sealing rings and the hose are mounted a pair of complementary elements, a first element having an inner cylindrical surface with an arc of greater than 180 ° angle and a second element having an inner cylindrical surface having an arc of an angle of less than 180 °, the first and second elements being joined by screws. On the inner surface of these Complementary elements are provided with grooves capable of housing said sealing rings, keeping them pressed against the outer surface of the hose and ensuring the tightness of the defective region.

The present invention differs from this document in that the solution proposed in WO 2006/066328 refers to a solution in which access to at least one free end of the hose is required to allow the sealing rings to be assembled. Additionally, the defective region of the hose remains in the hose, allowing the crack / tear to be extended over time and may extend outside the containment area provided by the apparatus. Furthermore, the solution proposed in WO2006 / 066328 requires continuous maintenance with respect to the service life of the sealing rings, making the tightness of the hose inefficient and unreliable. In addition, it is a device for repairing hoses of limited applications and pressures. All these disadvantages are overcome in the present invention.

WO 2011/143732 describes separator for coupling on hoses that transmit high pressure fluids in the form of gas. The coupling consists of four parts. The first is coupled to the first hose and the second part is coupled to the second hose. The first part includes a thread that engages the nut thread in a third element by an insertion and turning movement. Axial forces generated by fluid flowing through the coupling must generate sufficient pressure to overcome torsional forces by holding the first and third elements together. The third element is secured by a fourth element which has clockwise movement but does not allow counterclockwise movement by a one-way clutch that is between the third and fourth element. The document describes means for creating a lateral movement of the fluid together with the coupling to minimize the posterior axial pressure which may lead to decoupling. The present invention differs from this document in that the solution proposed in WO 2011/143732 makes use of a high number of components, representing a high level of complexity to assemble the same, as well as a high cost of manufacture to make it, making unfeasible. Its application in several situations represents a high cost and a long time of assembly, representing loss for processes that depend on the fluid supply conducted by the hose. All these disadvantages are overcome in the present invention.

From what is clear from the researched literature, no documents were found anticipating or suggesting the teachings of the present invention, so that the solution proposed here has novelty and inventive activity in the state of the art.

Summary of the Invention

The present invention discloses a kit comprising an apparatus for joining or emergency hose repair being preferably used in hoses operating under high stress.

It is, therefore, an object of the present invention, a kit with apparatus for emergency hose connection and / or repair, comprising:

(a) at least one flange 1 having a diameter substantially equal to the inside diameter of a hose 4;

b) at least one locking element 3 comprising at least one intermediate locking element 2 and;

c) securing means 5 between locking member 3 and flange 1.

In a preferred embodiment the flange 1 serves as a base for fitting the hose 4 to be repaired.

In a preferred embodiment, the intermediate locking element 2 makes the connection between the hose 4 and the flange 1.

In a preferred embodiment, the emergency hose attachment or repair apparatus comprises at least one nut and / or at least one tweezers. In a preferred embodiment, the locking element 3 acts on the intermediate locking element 2.

In a preferred embodiment, the locking element 3 is a cradle compound comprising a concavity that permits engagement of an intermediate locking element 2.

In a preferred embodiment, the locking element 3 is tapered and allows the interlocking of tweezers intermediate locking elements 2.

In a preferred embodiment, the locking element 3 is tubular and completely overlaps the intermediate locking element 2.

In a preferred embodiment, the securing means 5 comprise any elements capable of functionally imparting union between two or more bodies such as nuts, bolts, snap rings, rivets, pins, among others, as well as a combination thereof.

In a preferred embodiment, the securing means 5 is an additional element allowing connection between the locking element 3 and the flange 1 or is integral with the locking element 3 and / or the intermediate locking element 2.

In a preferred embodiment, the apparatus comprises at least one guide region 7 capable of guiding the assembly and providing the locking intermediate member 2 in the longitudinal direction.

Generally, in one preferred embodiment the locking intermediate member is a pair-mounted semi-cylindrical body, which is provided with radial projections on its inner surface. In another preferred embodiment, the intermediate locking element is a gripper fitted simultaneously to the outside of the side ends of the flange and to the inside of the locking elements.

In a preferred embodiment, the locking element is a cradle with recesses for engaging a nut. In another preferred embodiment, the locking element is a conical element. that allows the insertion of tweezers. In a further preferred embodiment, the locking element is tubular and may completely overlap the intermediate locking element.

These and other objects of the invention will be immediately appreciated by those skilled in the art and companies having an interest in the segment, and will be described in sufficient detail for their reproduction in the following description.

Brief Description of the Figures

Figure 1 illustrates one of the preferred embodiments of the hose connection or emergency repair apparatus of the present invention.

Figure 2 illustrates a perspective top view of a possible embodiment of the locking element 3 (cradle).

Figure 3 illustrates a perspective bottom view of a possible embodiment of the locking element 3 (cradle).

Figure 4 illustrates a possible embodiment of the flange.

Figure 5 illustrates a perspective view of a possible embodiment of intermediate element 2 (brown) comprising a finned semi-cylindrical geometry.

Figure 6 illustrates a perspective top view of a possible embodiment of intermediate locking element 2 (brown).

Figure 7 illustrates a perspective top view of a possible embodiment of the locking element 3 (cradle).

Figure 8 illustrates a perspective bottom view of a possible embodiment of intermediate locking element 2 (brown).

Figure 9 illustrates a perspective bottom view of a possible embodiment of the locking element 3 (cradle).

Figure 10 illustrates a perspective view of a possible embodiment of intermediate locking element 2 (brown).

Figure 11 illustrates a perspective view of a possible embodiment of the locking element 3 (cradle). Figure 12 illustrates a perspective view of a possible embodiment of the upper and lower interlocking locking element 2 (brown), including showing how they fit together.

Figure 13 illustrates one of the preferred embodiments of the hose attachment or emergency repair apparatus of the present invention.

Figure 14 illustrates a combined set of one of the preferred embodiments of the apparatus of the present invention comprising locking elements 3 (cradles), intermediate locking elements 2 (brown), flange 1 (nipple) and hose 4.

Figure 15 illustrates a joint of one of the preferred embodiments of the apparatus of the present invention comprising locking elements 3 (cradles), intermediate locking elements 2 (brown), flange 1 (nipple) and hose 4.

Figure 16 illustrates a complete set of one of the preferred embodiments of the apparatus of the present invention comprising four locking elements 3 (cradles), four intermediate locking elements 2 (brown), a flange 1 (nipple) and hose 4 to be applied.

Figure 17 illustrates a complete set of one of the preferred embodiments of the emergency hose coupling or repair apparatus of the present invention, comprising locking element 3 (cradle) associated with intermediate locking element 2 (brown), in collet geometry, and flange 1 (nipple).

Figure 18 illustrates a complete set of one of the preferred embodiments of the emergency hose joint or repair trim of the present invention comprising two locking elements 3 (cradles), three intermediate locking elements 2 (brown), a flange 1 (nipple) and the hose 4 to be applied.

Figure 19 illustrates a complete set of one of the preferred embodiments of the hose joining and repair apparatus of the present invention comprising a locking element 3 (cradles), three intermediate locking elements 2 (brown), a flange 1 (nipple), securing means 5 defined by a threaded collar and hose 4 to be applied.

Figure 20 illustrates the device being applied as a hose terminal, in which two locking elements 3 (cradles) are used to secure the intermediate locking elements 2 (brown) to the hose 4. In this case, instead of using flange 1 (nipple), a suitable connection element 6 is used between the hose and the machine, valve end, reservoir, fluid transport path or other equipment.

Detailed Description of the Invention

The present invention makes use of an emergency repair apparatus or hose coupling, said coupling being made from the joining of at least two free ends of at least one hose, easily and quickly installed.

The object of the present invention relates to a hose fitting or repair trim for preferential but not limiting use in hoses operating under high stress such as: hoses carrying hydraulic oil under high pressures and / or temperatures; hoses that are exposed to high / low temperature environments; high / low pressure / weather; different levels of ph; conduction of contagious fluids; among many other conditions that may cause premature deterioration, resulting in cracks, holes, or small leakage holes.

When a hose which is subjected to use such as those mentioned above breaks or leaks, it is essential that replacement be provided as soon as possible.

Linked to the urgency of replacing such hoses is the health risk that leaking fluid may cause individuals near the leakage site, or result in loss of productivity due to disruption or capacity reduction of a leaking fluid-dependent process. . However, the costs of hoses, such as those that need to withstand high demands, are quite high, especially due to the fact that they require special manufacturing processes, noble materials and are often made in small quantities, serving only ordering requests.

In order to solve these problems, the present invention discloses an apparatus capable of providing emergency hose coupling or repair, comprising:

(a) at least one flange having a diameter substantially equal to the inside diameter of a hose;

b) at least one locking element comprising at least one intermediate locking element and;

c) securing means between the locking element and the flange.

Hoses adapted for high demand conditions

The present invention has a number of advantages, including allowing the rapid emergency repair of a damaged hose, followed by immediate reuse thereof by means of an easily assembled apparatus, dispensing with special tools, easy portability and being usable. in hoses adapted to high demand conditions, giving a short machine downtime.

The present invention is understood to be hoses adapted for high demands, such as hoses conducting fluids, solids, vapors under high / low pressures and temperatures, various pH levels, salinities and densities without causing damage or posing a risk to equipment and / or equipment. operators close to where the hose operates.

Flange

The flange of the present invention comprises a preferably cylindrical body with part shoulder thereof, optionally comprising grooves or threaded threads on its outer sides. The flange of the present invention will serve as a base for fitting the hose and it may contain additional connecting and / or fastening elements with intermediate locking elements and / or locking elements such as, but not limited to, pins.

Intermediate locking element

The intermediate locking element of the present invention makes the connection between the hose and the flange and is preferably composed of at least one nut and / or at least one clip. More preferably, in certain embodiments one, two, three, four or more intermediate locking elements may be used.

Locking element

The locking element of the present invention acts on the intermediate locking element, preferably assisting in its locking. Preferably, the locking element is comprised of a cradle comprising a concavity for engaging a nut or part thereof. In another preferred embodiment, the locking element is tapered and allows interlocking of intermediate elements such as tweezers. In yet another preferred embodiment the locking element is tubular and additionally may completely overlap the intermediate element.

Mounting means

The fastening means between the flange and the locking element of the present invention comprise any elements capable of functionally joining between two or more bodies, in addition they may also confer resistance capable of withstanding the forces applied to the system, preventing it from entering. collapsed - we can cite as examples of fastening means: nuts, bolts, snap rings, rivets, pins, among others, as well as the combination thereof. In one embodiment of the present invention, the securing means is an additional element allowing connection between the locking element and the flange. In another embodiment of the present invention, the securing means may be integral with the locking element and / or the intermediate locking element. The present invention describes novel apparatus capable of joining at least two ends of at least one hose quickly, enabling safe repair and union, and method for emergency hose connection and / or repair. The apparatus can be used until a new hose is made and can be installed on site.

This union allows a ruptured hose caused by, for example, mechanical wear to be cut completely and reused with the insertion of this device, thus avoiding immediate stoppages, need to wait for another hose manufacture, need for large hose stocks , need to dismantle the machine and / or manufacturing line for repair and for all these reasons a big savings in all aspects.

In order to simplify its application, the device presented here can be installed directly in the hose without the need to peel it. It is sufficient for the damaged hose to be cut into two parts, with their ends correctly paired, and to insert the hose connection device.

In addition to the operational advantage of installing the apparatus, both for practicality and portability, there are numerous environmental and occupational advantages that translate into economic advantages for those who apply it.

The device has emergency application character and can be replaced as soon as the equipment can be stopped. In addition, the apparatus respects technical limits, such as curves, terminal proximity, tightness, among other factors imposed by each case and operational to ensure safe application.

Preferred Accomplishments - Examples

The apparatus for emergency hose connection and / or repair is preferably used in flexible hoses adapted to extreme conditions.

The use of the apparatus preferably follows the following steps: 1. Stop the flow of fluid and analyze the damaged zone of the hose.

2. The damaged area is cut transversely, forming two ends in the hose.

3. The ends are joined through opposite nozzle inlets.

4. Fit the nuts in their corresponding cradles.

5. The pair of nuts and cradles close adjacent the ends of the nozzle.

6. A pair or more bolts and a pair or more nuts cross-securely halve each cradle.

7. The fluid flow is released slowly and continuously.

The examples shown herein are intended solely to exemplify one of the numerous ways of carrying out the invention, however, without limiting the scope thereof.

The embodiment of the apparatus illustrated in Figure 13 refers to a first constructive variation of the apparatus where the flange 1 (nipple) is provided with rectangular teeth and a larger cradle engagement tooth 3. Cradles 3 preferably have four bolt entry holes of clamping and clamping, a semi-cylindrical nut spanner 2 and a tine to secure it to flange 1 (nipple) and to prevent slipping between hose 4 and flange 1 (nipple). Chestnut 2 has five sharp teeth being three larger and two smaller. The larger ones have the function of fixing the hose 4 and the smaller ones to prevent it from breaking when bent at the outlet of the nut 2.

The embodiment of the apparatus illustrated in FIG. 14 has some changes from the embodiment illustrated in FIG. 13. In the cradle 3, these modifications are: reduction from four to two clamping bolts, incorporation of flange nipple 1, addition of slots corresponding to the number of wefts that fit the nut 2, nut removal screw 2 and change in shape for weight reduction. Chestnut 2 of Fig. 14 comprises positioning shoulders indicating the amount of weft of the corresponding hose 4. These bumps The positioners, in turn, fit into the slots in the cradle 3. The flange 1 (nipple) of this model and the clamping shape are similar to the previous one.

The embodiment of the apparatus illustrated in FIG. 15 has some changes from the embodiment illustrated in FIG. 14: the small-gauge, low-mesh hose cradle 3 had its fabrication material modified for a polymer to reduce the weight of the assembly. The cradles 3 also comprise a simplified geometry, not including the flange 1 (nipple) and grooves, leaving only the central gap and the screw holes 5. The nut 2 of this concept is capable of concentrating all the appropriate functions, from the role of securing the hose 4 to the role of holding the flange 1 (nipple) and the cradle 2. For this purpose, it comprises a flange 1 (nipple) socket and two outer shoulders that secure the cradle 3, forming the junction of the system around it. The flange 1 (nipple) of this version has been replaced with the special designed for the industry standard.

The embodiment of the apparatus illustrated in Figure 16 comprises a cradle, preferably made of polymeric material, provided with wider width for better tightening of screws 5. The teeth of the nut 2 have been modified for better penetration into the hose 4.

The embodiment of the apparatus illustrated in FIG. 17 is intended to use conical nuts 2 acting as tweezers so that with the longitudinal direction tightening of the locking member 3, the nuts 2 are pressed against the hose 4, generating the hose clamping and locking. 4 with flange 1 (nipple). This system uses a threaded central flange 1 (nipple) where the cradle 3, also threaded, is fixed.

The embodiment of the apparatus illustrated in Fig. 18 comprises a simplified nut scheme 2 wherein the nuts for both hoses are made up of a single piece, resulting in a reduction in the amount of nuts 2 to preferably three pieces.

In this embodiment, the clamping takes place by two longitudinal bolts which, as a function of decreasing the distance inherent to the tightening of bolt 5 and threads, moves the locking elements 3 against each other by acting on the intermediate locking elements 2.

The locking element 3 comprises a conical inner surface and the intermediate locking element 2 has a conical outer surface, being able to act cooperatively with the internal conical surface of the locking element 3, generating a resulting force facing the central direction of the flange. 1 (nipple) acting on the intermediate locking elements 2, resulting in the attachment of hose 4 to flange 1 (nipple).

In a preferred embodiment the flange 1 (nipple) further comprises guide region 7 of the locking intermediate member 2, preferably defined by radial pins being cooperatively associated with radial openings in the locking intermediate members 2.

Guide pins 7 direct the intermediate locking element 2 towards the flange 1 (nipple) when it is engaged by the locking element 3 and further ensure that the intermediate locking elements 2 are maintained in their longitudinal operating position. and / or assembly of the apparatus.

The embodiment of the device illustrated in Figure 19, thus the embodiment illustrated in Figure 18, comprises the locking intermediate element 2 provided with a tapered outer surface. The locking element 3, however, being provided with a substantially cylindrical inner surface and an outer surface comprising threaded threads capable of operating cooperatively with the securing means 5.

The securing means 5 are defined by substantially hollow crowns comprising an inner surface provided with threaded threads and an outer surface provided with a geometry capable of tightening them with the aid of a suitable tool. Such geometry, preferably being hexagonal. Depending on the tightness of the crowns 5, the locking element 3 is superimposed on the intermediate locking elements 2, causing them to act on the hose 4 fixing it on the flange 1 (nipple).

In this embodiment, the locking intermediate elements 2 comprise a guide region 7 on its inner surface capable of cooperating with a flange 1 guide region 7 (nipple), ensuring longitudinal positioning of the locking intermediate elements 2. 7, preferably being defined by at least one shoulder on the inner surface of the locking element 2 capable of cooperating with at least one depression on the outer surface of the flange 1 (nipple).

Fig. 20 illustrates one embodiment in which the device is employed directly at a terminal 6 of a valve, reservoir, fluid transport route, rather than at the junction of two hose ends.

It should be noted that such use is possible with any of the variations described in this report, since all embodiments refer to a symmetrical device comprising the same principle of operation for fixing the two ends of the defective hose. Accordingly, the present invention may be employed at the joining of two hose ends, or at the joining of a hose end with any terminal comprising a nipple capable of being associated therewith.

Those skilled in the art will appreciate the knowledge presented herein and may reproduce the invention in the embodiments presented and in other embodiments within the scope of the appended claims.

Claims

Claims APPLIANCE KIT FOR UNION EMERGENCY UNIT OR REPAIR

1. Kit with apparatus for joining and / or emergency hose repair, comprising:

(a) at least one flange (1) having a diameter substantially equal to the inside diameter of a hose (4);

b) at least one locking element (3) comprising at least one intermediate locking element (2) and;

c) securing means (5) between the locking element (3) and the flange

(1).

Kit according to Claim 1, characterized in that the flange (1) serves as the base for fitting the hose (4) to be repaired.

Kit according to Claim 1, characterized in that the intermediate locking element (2) makes the connection between the hose (4) and the flange (1).

Kit according to claim 1, characterized in that it comprises at least one nut and / or at least one tweezers.

Kit according to Claim 1, characterized in that the locking element (3) acts on the intermediate locking element (2).

Kit according to Claim 1, characterized in that the locking element (3) is composed of a cradle comprising a concavity that allows an intermediate locking element (2) to be engaged.

Kit according to Claim 1, characterized in that the locking element (3) is conical and allows the interlocking of locking intermediate elements (2) in the form of tweezers.

Kit according to Claim 1, characterized in that the locking element (3) is tubular and completely overlaps the intermediate locking element (2).

A kit according to claim 1, characterized in that the securing means (5) comprise any elements capable of functionally imparting union between two or more bodies such as nuts, bolts, snap rings, rivets, pins, among others; as well as the combination of them.

Kit according to Claim 1, characterized in that the securing means (5) is an additional element allowing the connection between the locking element (3) and the flange (1).

Kit according to Claim 1, characterized in that the securing means (5) is integral with the locking element (3) and / or the intermediate locking element (2).

Kit according to any one of Claims 1 to 11, characterized in that it comprises at least one guide region (7) capable of guiding the assembly and providing maintenance of the intermediate locking element (2) in the longitudinal direction.