Spring-loaded divider assembly between two stalls in a cattle barn

Abstract

A separation assembly (100) for separating two adjacent areas (E) of a cattle barn, the assembly comprising a separation hoop (9) extending from a first end portion (91) to a second end portion (92), the first end portion (91) being connected to a first mounting base (1) by a first spring system (3), the second end portion (92) being connected to a second mounting base (101), the first spring system comprising at least one helical spring (5) surrounding both a portion of the first mounting base (1) and the first end portion (91), and cups enclosing a first portion (51) and a second portion (52) of the helical spring, or the helical spring being surrounded by both a portion of the first mounting base and the first end portion. Figure 5

Description

Title of the invention: Spring-loaded separation assembly between two locations in a cattle barn technical field

[0001] The present invention relates to a separation assembly comprising two fixing bases and a separation arch mounted on the fixing bases by a link allowing lateral movement, the separation assembly intended to separate two locations in a cattle barn. STATE OF THE ART

[0002] In practice, in the jargon of the trade, these partitions are also called "side walls". Each partition arch forms an open loop that follows a path in a vertical plane; the two front ends of the arch are fixed respectively to two fixing bases, arranged one above the other, the fixing bases being anchored to a fixed structure at the front of the location. The arch does not touch the ground.

[0003] A space for a bovine animal is therefore delimited on the left and right by a separating arch, this space is also called 'stall' in the jargon of the trade.

[0004] The reader may refer to document EP0447822 which discloses this type of separation arch and which deals with the problem which is set out below.

[0005] The bovine animal is often lying down in the space between the two separating hoops. When the animal gets up to leave the space or for another reason, it may happen that one of its flanks comes into contact with one of the separating hoops.

[0006] It is therefore important that the separation hoop has a certain degree of flexibility, firstly to avoid injuring the animal and secondly to facilitate the animal's movement near or in contact with the separation hoop.

[0007] A flexibility of the separation arch can also facilitate the arrival of the animal inside the location and its exit.

[0008] We are particularly interested here in the lateral flexibility which allows the separating arch to move apart in a horizontal direction so as to increase the distance which separates it from the other separating arch which delimits the same stable location.

[0009] The solutions presented in document EP0447822 are complex and costly to implement. Furthermore, the lateral return to the reference position of the side panel lacks precision.

[0010] The inventors sought to propose an improved solution regarding the flexibility of the fixing of the separation hoops while meeting the requirements for resistance to forces. PRESENTATION OF THE INVENTION

[0011] For this purpose, a separation assembly is proposed for separating two adjacent locations in a cattle barn, the assembly comprising a separation hoop extending from a first end portion to a second end portion, the first end portion being connected to a first fixing base by a first spring system, the second end portion being connected to a second fixing base, the first spring system comprising at least one helical spring in contact interface both with at least a part of the first fixing base and with the first end portion of the separation hoop.

[0012] As will be seen later, the contact interface may involve the helical spring surrounding the first portion of the end of the hoop or, conversely, the first portion of the end of the hoop surrounding the helical spring, the two configurations in question fulfilling substantially the same general functionality.

[0013] Thanks to the arrangements proposed here, the spring provides on the one hand a function of linking and holding the first end portion of the hoop on the first fixing base in a generally coaxial manner, and on the other hand provides a return to a rest position where the first fixing base and the first end portion are aligned.

[0014] It should be noted that there is no direct contact between the first end portion of the hoop and the mounting base. The interface is achieved via the helical spring, which exhibits a certain degree of flexibility in bending.

[0015] It should be noted that the second end portion is connected to the second fixing base, either by means of a spring system similar or identical to the first spring system, or by means of a simpler articulation for example a vertical axis hinge.

[0016] The helical spring allows the separation hoop to be returned to a reference position, corresponding to a rest position, the hoop then being parallel to the anteroposterior direction of the cattle space, therefore perpendicular to the longitudinal member of the support structure at the front of the space.

[0017] It should be noted that the helical spring works in bending to allow a horizontal angular deflection of the separating arch.

[0018] Given the substantial size of its coil wire, the helical spring exhibits a very substantial rigidity / stiffness and thus it does not work in tension, it works essentially in bending.

[0019] It should be understood that the proposed configuration can generally be suitable for animal barns, not strictly only for cattle.

[0020] It is noted that the stiffness characteristics of the spring remain constant over the long term, with a metallic spring free from fatigue or aging effects, unlike some plastic or elastomer materials.

[0021] Advantageously, an animal that comes into contact with the separation hoop will not get hurt, because the separation hoop will move back laterally in an elastic manner and return to its resting position after the animal's movement.

[0022] According to one embodiment, the helical spring comprises a first interval between non-contiguous turns, the assembly comprising a first bolt passing at least through the first end portion of the hoop and through the first interval between non-contiguous turns, to provide a hoop retention function.

[0023] Optionally, as will be seen later, this first bolt can also pass through an element of the base (called respectively connecting arm or trunnion extension according to the embodiments discussed later).

[0024] This first bolt, once in place, provides an anti-removal function for the separating bracket. This anti-removal function may involve the spring as an intermediate piece, or it may directly connect the first end of the separating bracket to an element of the base by means of a through hole in at least one element of the base, allowing passage for the first bolt.

[0025] Thus, once the first bolt is inserted, the separating arch is held in place and cannot be removed from the base.

[0026] According to one embodiment, an angular stop function is provided to limit the angular deflection of the hoop relative to a neutral reference position. This prevents a partition hoop from encroaching too much on the space of an animal pen. This also prevents the spring from being excessively deformed and approaching its elastic limit.

[0027] According to one embodiment, the helical spring is in contact interface through the inside of the spring and the first fixing base includes a base trunnion receiving the spring on its radially external surface, the helical spring surrounding the first end portion of the separating hoop.

[0028] As a result, the helical spring has a substantial diameter and its coil diameter is also substantial.

[0029] According to one embodiment, the helical spring has a coil wire diameter of at least 8 mm and an internal circumscribed cylinder diameter at rest of at least 45 mm and a length of at least 110 mm.

[0030] Thanks to these generous dimensions, the helical spring has significant stiffness in bending and makes it possible to properly maintain the separation hoop, notwithstanding the significant forces exerted by the cattle on the separation hoop, particularly at its end opposite the fixing bases.

[0031] It is noted that the helical spring is arranged outside the parts it connects and has a fairly substantial wire diameter, capable of generating a very substantial holding force and a very substantial restoring force, against the forces exerted by the animals entering and leaving the space delimited by the separation assembly.

[0032] According to an optional embodiment, the first fixing base further includes an extension forming an angular stop and with a hole 29 forming a passage for the first bolt.

[0033] The extension in question is also a cylindrical part with a diameter slightly smaller than the diameter of the base trunnion. The extension extends the base trunnion and may include a slightly frustoconical end portion. The extension acts as an angular deflection stop and limits the horizontal bending movement of the separating arch.

[0034] This results in a robust and sturdy assembly. The mounting base can be two-piece with a continuous weld; alternatively, the mounting base can be a single piece.

[0035] Advantageously, the base trunnion with its extension and the first end portion are arranged coaxially. The helical spring thus continuously surrounds the base trunnion and the first end portion of the hoop.

[0036] Typically, the base trunnion has a round cross-section; the base is an easy-to-manufacture part. The main cross-section of the hoop can also be round. In this case, the helical spring continuously surrounds and closely conforms to the trunnion and the first end portion of the hoop, which allows for the efficient transmission of linear and torsional forces.

[0037] According to one embodiment, the first spring system comprises a first pair of cups and a second pair of cups, the first pair of cups being able to enclose a first portion of the helical spring, and the second pair of cups being able to enclose a second portion of the helical spring.

[0038] Thus, each pair of cups encloses the portion of the spring which is located between the two cups concerned.

[0039] More specifically, the first pair of cups clamps the first portion of the helical spring which itself clamps the trunnion, and the second pair of cups encloses the second portion of the helical spring which itself encloses the first end portion of the hoop.

[0040] According to one embodiment, each cup has a semi-cylindrical shape, e.g. with an angular extension of 150°.

[0041] The tightening is at its maximum at the bolt which clamps the two cups together and which will be seen later.

[0042] It is noted that the cups allow the coils to slide axially, particularly in the axial end zones of the cups. Furthermore, a small gap is provided, along the axial direction, between the two pairs of cups.

[0043] It is noted that the proposed assembly is all metallic, it is robust and durable.

[0044] According to one embodiment, the helical spring includes a second gap between non-contiguous turns to allow a second bolt (S2) to pass through, and the base trunnion has a diametrical hole to allow the second bolt to pass through.

[0045] According to an embodiment representing another embodiment, the helical spring is in contact interface by the outside of the spring, the first fixing base comprising on the one hand a cylindrical skirt receiving on its inner surface the helical spring and on the other hand a connecting arm with a head with a hole to allow the first bolt to pass through.

[0046] The cylindrical skirt receives and holds the spring in the desired position. The connecting arm, with its perforated head, retains the hoop. The connecting arm extends from the cylindrical skirt along the axis of said cylindrical skirt.

[0047] In this configuration, the cylindrical skirt and the first end portion of the separating hoop are substantially continuous with each other. Only the head of the first bolt protrudes beyond the overall diameter of the assembly. A small gap of a few millimeters may be provided between the free end of the cylindrical skirt and the front edge of the end portion of the separating hoop.

[0048] It is noted that, once the assembly is completed, the helical spring is almost not visible from the outside except, where applicable, at the location of the small gap left free.

[0049] According to one embodiment, the first end portion of the separating hoop surrounds and closely conforms to the helical spring. Thus, the spring provides the indirect mechanical connection between the mounting base and the separating hoop.

[0050] According to one embodiment, the cylindrical skirt has the same outside diameter as the outer diameter of the hoop. This results in an elegant and aesthetically pleasing assembly, and one that is also free of any rough edges except perhaps at the ends of the first bolt.

[0051] According to one embodiment, concerning the helical spring, the areas of non-contiguous coils are exceptions because otherwise, for the rest of the helical spring, the coils are contiguous, especially at rest, as classically known for a helical spring.

[0052] According to one embodiment, the non-contiguous spiral areas are dimensioned to allow the passage of a bolt shank with a diameter of 10 millimeters.

[0053] According to one embodiment, the separating arch is obtained from a hollow metal tubular profile. This is a very robust solution that offers very satisfactory long-term durability.

[0054] According to one embodiment, the section of the tubular profile is round.

[0055] According to one embodiment, the second end portion is connected to the second the fixing base by a second spring system essentially similar or identical to the first spring system, and the separating arch is mounted cantilevered over the first and second fixing bases.

[0056] According to one embodiment, the second fixing base is positioned vertically below the first fixing base.

[0057] In this configuration, there are therefore two spring systems, functionally in parallel, which doubles the restoring force towards the neutral reference position.

[0058] According to one embodiment, each of the first end portion and second end portion has a diametrical hole to allow the first bolt to pass through, and an element of the fixing base has a diametrical hole to allow the first bolt to pass through, or the extension of the trunnion has a diametrical hole to allow the first bolt to pass through.

[0059] According to one embodiment, the bolt axes are vertical, with a domed head at the top and a nut at the bottom.

[0060] According to one embodiment, the metal separating hoop can be coated with a protective layer. This protective layer can serve to protect the hoop from the physico-chemical environment and also acts as a shock absorber for impacts on the hoop.

[0061] According to one embodiment, the separating arch is cantilevered over the first and second fixing bases. And this without any other support point between the two end portions of the arch.

[0062] It is therefore the mounting bases and spring systems that generally absorb all the forces exerted on the separating hoop, in all directions. The rigidity in the vertical direction is very significant, while the rigidity in the horizontal direction is designed to allow calculated deflection in the event of a horizontal thrust on the separating hoop.

[0063] The separation hoop does not require any direct ground support; the space under the separation hoop is free for the passage of hand tools or robotic tools. This facilitates the movement of people or operators and tools. Furthermore, there are no traps for soiling the floor, thus simplifying floor cleaning. Access is easy for cleaning the floor and adding fresh straw. PRESENTATION OF FIGURES

[0064] The invention will be further detailed by the description of non-limiting embodiments, and on the basis of the accompanying figures illustrating variants of the invention, in which figures 1, 2 and 6 relate to the two main embodiments and possible variants, figures 3 to 8 relate to the first main embodiment, and figures 9 to 13 relate to a second main embodiment: - [Fig.1] illustrates an elevation view of a cubicle configuration, namely of a separating arch fixed by means of two fixing bases on a supporting structure of stable, the fixing bases being in accordance with the present invention; - [Fig.2] shows in top view three adjacent locations capable of each receive a bovine of the cow, ox or bull type; - [Fig.3] shows a vertical cross-section, according to a first embodiment main, an example of a fixing base with a portion of the end of a separating hoop received inside the tubular body of the base; - [Fig. 4] shows a horizontal cross-section of an example of the mounting base of the [Fig.3], with the end portion of the separating arch received inside the tubular body; - [Fig. 5] shows an exploded perspective view of the proposed spring system in the present invention; - [Fig.6] schematically illustrates the angular deflections in a top view permitted by the elasticity of the proposed spring system; - [Fig.7] shows a cross-sectional view along the VILVII section line visible at the [Fig.3]; - [Fig.8] shows in horizontal section an example of angular deflection with deformation of the helical spring; - [Fig.9] shows a vertical section, according to a second embodiment main, an example of a fixing base with a portion of the separating hoop end, with a helical spring received inside the portion of the hoop end; - [Fig. 10] shows in horizontal section an example of the mounting base of the [Fig.9], with the helical spring received inside the end portion of the arch and the cylindrical skirt of the base; - [Fig. 11] shows a cross-sectional view along section line XII visible at the [Fig.9]; - [Fig. 12] shows a perspective view of an example of the base of fixation according to the second principal embodiment; - [Fig. 13] shows a cross-sectional view of an example of the mounting base according to the second principal embodiment.

[0065] In the various figures, the same reference numerals designate identical or similar elements. For the sake of clarity, some elements are not necessarily shown to scale. DETAILED DESCRIPTION OF THE INVENTION

[0066] Figure 2 shows a portion of a housing unit, also called a stable, in which bovine animals, for example cows, oxen or young bulls, can rest.

[0067] Only one cow V has been represented on the location in the middle of [Fig.2], the two locations E to the right and left are shown empty of animal.

[0068] In order to delimit the different locations E, separating elements 9 are provided, which are also called in practice generally side walls, and also in this document "separation arches".

[0069] Here we use an orthogonal spatial frame such that the Z direction is the local vertical, the X direction corresponds to an anteroposterior direction of the animal and anteroposterior direction of the location and the Y direction corresponds to a so-called 'transverse' or 'lateral' direction, i.e. right-left.

[0070] The separating elements 9 are separated from each other by a distance denoted W8. The separating elements 9 extend from the longitudinal members 54 rearward over a distance denoted L9.

[0071] W8 can be from 100 cm to 150 cm, preferably W8 is chosen between 120 cm and 130 cm.

[0072] The stringers 54 are massive and are fixed on robust posts 56.

[0073] Fig. 1 shows a separation set identified as 100.

[0074] The separation assembly 100 includes the separation hoop 9, the first fixing base 1 and the second fixing base 101.

[0075] As can be seen in [Fig.1], at least one upper spar 54 and one lower spar 55 are provided.

[0076] The separating element between two locations is presented as a separating arch (also called a 'battle-side').

[0077] The partition arch 9 generally comprises an upper bar, a rear bend that curves from 145° to 180° (depending on various geometric configurations of the side panel), and a lower bar. As can be seen in [Fig. 1], the lower and upper bars are not necessarily straight.

[0078] The separating arch 9 extends between a first end portion identified as 91 (at the end of the upper bar) and a second end portion 92 (at the end of the lower bar).

[0079] In other words, the separating arch 9 forms an elongated U with the arms of the U generally horizontal, but not necessarily straight.

[0080] The separating arch 9 is obtained by extrusion. The resulting extruded profile has a constant cross-section throughout its path.

[0081] As illustrated, the separating arch 9 is formed from a profile with a round outer section. Another cross-sectional shape is not excluded.

[0082] In the illustrated example, the separation hoop 9 is made of metallic material, for example galvanized steel. However, it is not excluded to manufacture the separation hoop from a high-performance mechanical plastic synthetic material.

[0083] When the hoop is made of metal, according to one embodiment, it can be coated with a layer of protective synthetic material, as illustrated by reference 96 in [Fig. 4]. It should be noted that in the second main embodiment, the coating is total, extending over the entire separating hoop, including the end portions.

[0084] The diameter D9 of the common section of the hoop is between 40 mm and 60 mm, without these values ​​being limiting. The material thickness is between 2 mm and 3.5 mm.

[0085] The height H9 of the side panel can be between 75 cm and 120 cm.

[0086] The length L9 of the side panel can be between 160 cm and 220 cm.

[0087] According to one embodiment, the lower fixing base 101 is located at least 25 cm from the ground.

[0088] A first fixing base, noted 1, is provided, which will be described in detail later; it is fixed to the upper longitudinal member 54. The first fixing base 1 is connected to the first end portion 91 of the separating arch by a spring system promoted by the present invention and which will be described later.

[0089] A second mounting base, noted 101, similar or identical to the first, is provided, which is fixed to the lower longitudinal member 55 and is connected to the second end portion 92 of the separating arch 9.

[0090] The hoop does not contact the floor. This makes floor cleaning very easy. A hand tool or a robot can move around in this area.

[0091] The hoops can optionally be connected to each other by a neck bar, connecting the upper bars together in a rigid or semi-rigid manner.

[0092] First embodiment

[0093] As shown in Figures 3, 4 and 5, the mounting base I comprises a base plate 2 and a rod 20 extending from the base plate. The rod 20 comprises a base trunnion 21 and an extension 22.

[0094] The mounting base 1 is preferably made of steel. The mounting base 1 may be galvanized or more generally protected against the effects of corrosion.

[0095] The base plate 2 is a thick plate, say with an indicative thickness of between 8 mm and 12 mm. All the forces exerted by the animals on the separating elements 9 are transmitted through this base plate, which can also be called a slab or plinth. In the operating configuration, the base plate 2 extends in a YZ plane. In the illustrated example, the base plate 2 is square, but it could be rectangular or even take on other shapes.

[0096] L2 and W2 are typically between 10 cm and 16 cm, these values ​​not being limiting.

[0097] The base plate 2 is rigidly fixed, via a bolted clamping plate or a complete screwed bracket, either to the post 56 or to the stringer 54 depending on various configurations. A plurality of holes, designated 12, are provided in the base plate for this purpose. The clamping plate and the base plate sandwich the post or the stringer.

[0098] The base trunnion 21 has an axis XI perpendicular to the YZ plane of the base plate. The base trunnion 21 extends over a length L3. In one example, L3 may be between 6 cm and 15 cm.

[0099] The base trunnion 21 can be welded to the base plate 2, or the two elements can be formed as a single piece.

[0100] The extension 22 extends the base trunnion 21 along XI and may include a slightly frustoconical end portion, denoted 23 in Figures 4, 5 and 8. As illustrated in [Fig. 8], the extension 22 acts as an angular deflection stop and allows the horizontal bending movement of the separating arch to be limited.

[0101] The diameter D8 of the extension is slightly smaller than the inner diameter of the tube 9 of the hoop. The free end of the extension is marked 25.

[0102] The difference in diameter between the diameter D0 of the base trunnion and the diameter D8 of the extension produces a shoulder 26. As can be seen in [Fig. 4], the shoulder 26 also serves as a stop for the insertion movement of the hoop tube 9: the edge free 94 of the tube comes to rest against the shoulder 26 (a small step back will allow the insertion of the first bolt SI).

[0103] The extension is equipped with a diametral hole marked 29. In order to allow the maximum defect a9 provided (see below), this diametral hole 29 has a transverse dimension greater than the bolt shank. Alternatively, this diametral hole may be oblong in shape.

[0104] Figure 8 shows a situation where the hoop is in a deflection position; the contact zone ZC between the cylindrical inner surface of the hoop tube and the outer surface of the extension 22 is visible.

[0105] The first end portion 91 is connected to the first fixing base 1 by a first spring system noted 3.

[0106] The spring system 3 includes a helical spring 5 and means for retaining said helical spring 5 on the rod 20 and the end portion 91 of the hoop.

[0107] As can be seen in figures 3 and 4, the helical spring 5 surrounds both the base trunnion 21 of the first fixing base 1 and the first end portion 91 of the hoop.

[0108] More specifically, in view of the respective diameters, the helical spring 5 closely fits the base trunnion 21 and the first end portion of the hoop 91.

[0109] The helical spring 5 is made of corrosion-protected steel, for example zinc-plated steel.

[0110] The number of coils of the spring can be between 10 and 20, preferably between 12 and 16.

[0111] The helical spring has a coil wire diameter D5 of at least 8 mm and an internal diameter DI of the circumscribed cylinder at rest of at least 45 mm and a length L5 of at least 150 mm. Consistent with the external diameter of the hoop section, DI may be between 45 mm and 60 mm.

[0112] It should be noted that these values ​​are not limiting within the meaning of the present invention

[0113] The outer diameter of the helical spring 5 is denoted D2. It is noted that, without constraints, we have D2 = DI + 2 x D5.

[0114] Once the spring system is assembled, the helical spring is locked against axial movement on the base trunnion by means of a first metal rod / key passing through the base trunnion and inserted between the coils of the spring. Similarly, the helical spring is locked against axial movement on the base trunnion by means of a second metal rod / key passing through the end portion of the hoop and inserted between the coils of the spring.

[0115] In the example illustrated here, each of the first and second rods is part of a bolt which is described later.

[0116] The first end portion 91 is butted to the shoulder 26 of the base trunnion 21 of the base, either by touch or with a gap denoted E2. E2 at rest can be chosen between 1 mm and 3 mm at most.

[0117] The base tenon 21 of the base and the first end portion 91 are arranged coaxially along the axis XI.

[0118] The spring system comprises a first pair of cups, with an upper cup 61 and a lower cup 63. The first pair of cups is adapted to enclose a first portion 51 of the helical spring. The helical spring 5 surrounds the trunnion 21 over at least two-thirds of its axial length L3. The proportion of coverage of the first portion 51 of the helical spring on the base trunnion 21 can range from 60% to 100% (in the case of the end of the spring abutting the base plate 2).

[0119] The spring system includes a second pair of cups with an upper cup 62 and a lower cup 64. The second pair of cups is suitable for enclosing a second portion 52 of the helical spring.

[0120] The upper and lower cups are symmetrical to each other with respect to an XY plane. The upper and lower cups are made of metal, for example galvanized steel.

[0121] As seen in [Fig.7], each cup has a semi-cylindrical shape, e.g. an angular extension of 150°, or generally between 140° and 180°. Each cup is designed to circumscribe a cylinder of diameter D2, i.e. the outside diameter of the spring at rest.

[0122] A hole 66 is provided in the middle of each cup, notably to allow a bolt shank to pass through. Each hole 66 may have, in a non-limiting example, a diameter of 11 mm to 13 mm.

[0123] The helical spring 5 comprises a first portion 51 and a second portion 52 in continuity with the first, with adjacent coils joined except at two places as explained below.

[0124] The helical spring 5 includes a zone of non-contiguous coils, denoted 72, i.e., a gap between non-contiguous coils, to allow passage of a first bolt SI radially through the first end portion 91 of the separating hoop and through the spring. It is the first bolt (or, where applicable, the first key) that retains the hoop tube and prevents the separating hoop from recoiling in the direction XI.

[0125] According to a particular feature, the helical spring 5 comprises another area of ​​non-contiguous coils denoted 71 i.e. another interval between non-contiguous coils, for allow a second bolt S2 to pass radially through the spring from one side to the other and radially through the base trunnion 21.

[0126] The areas of non-contiguous coils are exceptions because otherwise, for the rest of the helical spring, the coils are contiguous, especially at rest.

[0127] The diameter D5 of the coil wire is between 8 and 12 millimeters, for example close to 10 mm and the spacing provided by each zone 71,72 of non-contiguous coils allows a rod of diameter close to 10 mm to pass through.

[0128] After assembly, the second bolt S2 clamps the upper cup 61 and the upper cup 63 of the first pair onto the first portion of the spring 51. The second bolt S2 passes through a diametrical orifice 24 provided in the base trunnion 21.

[0129] The first bolt SI passes through two diametrically opposed orifices 90 provided in the first end portion 91 of the separating hoop.

[0130] The first bolt SI passes through the diametrical hole 29 made in the extension 22.

[0131] The first bolt SI clamps the upper cup 62 and the upper cup 64 of the second pair of cups on the second portion of the spring 52.

[0132] The diameter of the shank of bolts S1, S2 may be, in a non-limiting example, 10 mm. The diameter of each diametral hole 24, 29 may be, in a non-limiting example, from 11 mm to 13 mm.

[0133] As already mentioned above, to allow the desired angular deflection, the hole 29 in the extension 22 can be slightly larger, as well as the two diametrically opposed orifices 90 provided in the first end portion 91 of the separating arch.

[0134] It should be noted that on the exploded view of [Fig.5], the lower cups 63,64 have not been shown.

[0135] The first bolt SI has a first axis Al, arranged vertically, parallel to Z. The second bolt S2 has a second axis A2, arranged vertically.

[0136] As illustrated in [Fig. 7], each bolt SI, S2 may have a domed head 59 on its upper end, which is conducive to personal safety and maintaining cleanliness. A nut 19 is provided on the lower part of the bolt, opposite the head.

[0137] The distance between the first axis Al and the second axis A2 is denoted L4.

[0138] The axial length of the first lower cup 63 and the first upper cup is denoted L7. The axial length of the second lower cup 64 and the first upper cup is denoted L8.

[0139] L4, L7 and L8 are of the same order of magnitude. According to a non-limiting example, this The length can be between 6 cm and 15 cm.

[0140] The angular deflection a9 (direction X9) corresponds to the deflection provided by the flexibility of the spring (or springs if there are two). The maximum deflection can be in the range of 30 to 40 degrees.

[0141] As illustrated in [Fig.8], when the separating arch 9 is deflected from the reference position aligned with the direction XI, the coils of the spring on the inner side remain joined between the first portion 51 and the second portion 52, while the coils of the spring move apart from each other on the outer side in the area marked 58.

[0142] We thus have a hinge effect at the level of the vertical axis passing through the area of ​​the joined coils between the first portion of the spring and the second portion of the spring, on the inner side of the bending.

[0143] On each of the spring systems 3, it is noted that all the forces pass only through the helical spring 5.

[0144] Regarding the self-weight of the separating arch, in the order of 10 to 20 kg, it generates a small compression on the lower spring system and a small compression on the upper spring system.

[0145] It is noted, however, that the forces resulting from pressure from a bovine on the separating arch generate much greater forces at the level of the springs of the spring systems.

[0146] The second end portion 92 is connected to the second fixing base 101 by a second spring system denoted 103. In the example given, the second spring system 103 is a helical spring system similar or identical to the first spring system 3, therefore not described again here.

[0147] Of course, the connection between the second end portion 92 and the second fixing base 101 could be of a different nature with or without a return.

[0148] Regarding the means for maintaining the helical spring 5 and its clamping onto the base trunnion and the hoop, alternatively, the function could be achieved by means of a shrink sleeve or another clamping solution using collars or screw-on sleeves. Thanks to the bolt arranged in the central position of the cup, the helical spring 5 is immobilized relative to the section it surrounds at that point, but allows a small amount of axial sliding freedom at a distance from this point, which facilitates the spacing of the coils necessary for the lateral movement of the separating hoop.

[0149] Second embodiment

[0150] The second embodiment, illustrated in figures 9 to 13, generally fulfills the same functions as those described for the first embodiment.

[0151] Only distinctive features will be described in the following paragraphs. Identical or similar features will be considered to have already been described and will not be described again.

[0152] With reference to figures 9 and 10, the mounting base 1 is connected to a vertical post 6 by a mounting flange 7. The base plate 2 and the mounting flange sandwich the vertical post 6, by means of screwing bolts 4 which pass through the holes 12 of the base plate and the corresponding holes in the flange 7.

[0153] The following are the main differences that characterize the second embodiment compared to the first embodiment.

[0154] First, the helical spring is located inside the hoop tube and is also located inside a cylindrical skirt of the mounting base which will be described later.

[0155] Next, the assembly requires the presence of only one bolt.

[0156] Next, the assembly allows the use of a hoop tube coated over its entire length outer surface including end portions.

[0157] The mounting base 1 comprises a base plate 2, a cylindrical skirt 87 and a connecting arm generally marked 8, which will be discussed later.

[0158] The first end portion 91 of the separating hoop 9 includes, as in the first mode, two diametrically opposed orifices 90 allowing the passage of the first bolt SI.

[0159] The outer diameter of the hoop tube is marked D9 and the inner diameter of the hoop tube D2 corresponds substantially to the outer diameter of the helical spring 5.

[0160] The arch tube 9 is coated with a synthetic protective layer 96 over its entire outer surface.

[0161] Once assembled, the proposed spring system 3 provides that the spring 5 is inserted inside the tube. For the helical spring, a gap 73 is provided between non-contiguous coils. This gap 73 between non-contiguous coils is designed to coincide with the position of the diametrically opposed openings at the first end of the hoop tube. There are at least three or four coils of the spring extending from this gap 73 in the opposite direction to the mounting base.

[0162] In the opposite direction towards the fixing base 1, the helical spring 5 has, from the interval 73, non-contiguous turns of at least six or seven turns or even ten.

[0163] The cylindrical skirt 87 extends from the base plate 2 and has an axis XI coinciding with the axis of the hoop tube at that point. The cylindrical skirt 87 receives the helical spring 5 inside its interior in a manner similar to the hoop tube.

[0164] Advantageously, the outer diameter of the cylindrical skirt is substantially equal to the outer diameter D9 of the hoop tube, so that the assembly is elegant, aesthetically pleasing, and secure. The inner diameter of the cylindrical skirt 87 corresponds to the outer diameter D2 of the helical spring 5.

[0165] The connecting arm 8 can take various forms. In the illustrated example, the connecting arm comprises a first cylindrical portion denoted 88 and a tab 89 extending opposite the base plate 2. The extending tab 89 comprises a head 85 including a hole 84 with axis Al.

[0166] According to the example illustrated here, the first cylindrical portion 88 and the extending tab 89 are formed as two separate parts welded together. However, a substantially one-piece connecting arm 8 could be provided, welded on one side to the base plate 2 and having a hole allowing the passage of the first bolt SI.

[0167] The axial length L6 of the connecting arm 8 is greater than the axial length LP of the cylindrical skirt. According to the illustrated example, the axial length L6 of the connecting arm 8 is substantially double the axial length LP of the cylindrical skirt 87.

[0168] The outer diameter DF of the first cylindrical portion 88 corresponds in the illustrated example to the inner diameter DI of the helical spring 5. The inner diameter DD of the first cylindrical portion 88 is determined according to the desired mechanical resistance of the connecting arm, in particular to pull-out.

[0169] The axial length LF of the first cylindrical portion 88 may be identical or close to the axial length LP of the cylindrical skirt 87.

[0170] The extension tab 89 can be made from a thick metal plate. The through hole 84 is fitted in the illustrated example with a guide bushing 86 for the bolt SI. The bushing 86 has an outside diameter D7 coinciding with the diameter of the hole 84. The bushing 86 has an inside diameter D6 corresponding to the passage of the bolt shank SI, for example, size 10 mm.

[0171] As can be seen in [Fig. 10], in a deflected situation represented by dotted lines, the coils of the spring come into contact with the head 85 of the connecting arm 8, which makes it possible to form an angular stop as already mentioned above.

[0172] All components of the mounting base 1 are metallic and are preferably protected against corrosion by hot-dip galvanizing. It should be noted, however, that the sleeve 86 can be added and obtained from a softer metal or alloy.

[0173] According to an alternative (not shown), the connecting arm 8 could be formed as a solid, one-piece rod, for example, a rod with stepped diameters similar to the trunnion and its extension of the first embodiment. The diameter of the head, which may be partially spherical, must be slightly smaller than the inner diameter of the spring to allow sufficient space for angular deflection. This space must remain small relative to the desired maximum angular deflection.

[0174] Advantageously, in the main embodiment proposed, the first end portion of the hoop is butted to the axial end of the first base, almost by touch with a small interval E2. Without limitation, this interval E2 can be at most 3 mm at rest.

[0175] It should generally be noted that, instead of bolt(s), keys, pins, or any other equivalent means could be used.

Claims

Demands

1. Separation assembly (100) for separating two adjacent locations (E) of a cattle barn, the assembly comprising a separation hoop (9) extending from a first end portion (91) to a second end portion (92), the first end portion (91) being connected to a first fixing base (1) by a first spring system (3), the second end portion (92) being connected to a second fixing base (101), the first spring system comprising at least one helical spring (5) in contact interface with both at least a portion of the first fixing base (1) and with the first end portion (91) of the separation hoop (9).

2. Separation assembly according to claim 1, wherein the helical spring (5) comprises a first gap between non-contiguous turns (72;73), the assembly comprising a first bolt (SI) passing at least through the first end portion (91) of the hoop and through the first gap between non-contiguous turns, to provide a hoop retention function.

3. Separation assembly according to any one of claims 1 to 2, wherein an angular stop function is provided to limit the angular deflection (a9) of the hoop with respect to a neutral reference position.

4. Separation assembly according to any one of claims 1 to 3, wherein the helical spring is in contact interface through the inside of the spring and the first fixing base comprises a base trunnion (21) receiving the spring on its radially outer surface, the helical spring (5) surrounding the first end portion (91) of the separation hoop.

5. Separation assembly according to claim 4, wherein the first fixing base (1) further comprises an extension (22) forming an angular stop and with a hole (29) forming a passage for the first bolt (SI).

6. Separating assembly according to any one of claims 4 to 5, wherein the first spring system comprises a first pair of cups (61, 63) and a second pair of cups (62, 64), the first pair of cups being adapted to enclose a first portion (51) of the helical spring, and the second pair of cups being able to enclose a second portion (52) of the helical spring.

7. Separating assembly according to any one of claims 4 to 6, wherein the helical spring (5) includes a second gap between non-contiguous turns (71) to allow passage of a second bolt (S2), and the base trunnion (21) has a diametrical bore (24) to allow passage of the second bolt (S2).

8. Separating assembly according to any one of claims 1 to 3, wherein the helical spring is in contact interface with the outside of the spring, the first fixing base (1) comprising on the one hand a cylindrical skirt (87) receiving on its inner surface the helical spring (5) and on the other hand a connecting arm (8) with a head with a hole to allow the first bolt to pass through, and the first end portion (91) surrounds the helical spring.

9. Separation assembly according to claim 8, wherein the cylindrical skirt has the same outside diameter (D9) as the outside diameter of the hoop.

10. Separating assembly according to any one of claims 1 to 9, wherein the second end portion (92) is connected to the second fixing base (101) by a second spring system (103), substantially similar or identical to the first spring system, and wherein the second fixing base (101) is positioned vertically below the first fixing base (1).

11. Separation assembly according to claim 10, wherein the separation hoop is mounted cantilevered on the first and second fixing bases (1,101).

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