RU181488U1 - Corrugated fence - Google Patents

Abstract

A corrugated transition guard for connecting vehicles or an airplane to the airport is proposed, made in the form of a bellows, each corrugation of which is formed by scarves (panels) made of fabric sewn together with each other to form a closed loop, characterized in that the seams of the joints of adjacent corrugations are spaced in the direction tangent to the contour of the corrugation, and on the outside of the fence, the lower edges of the upstream shawls overlap the upper edges of the downstream. In this case, the distance between the seams of the joints of adjacent corrugations is 2 ... 20 thicknesses of fabric scarves, and the ends of the joints of adjacent corrugations can be spaced in the direction tangent to the contour of the corrugation. In this case, the distance between the ends of the joints of adjacent corrugations should be 5 ... 40 thicknesses of scarf fabric. The technical result consists in increasing the durability of the fence. 3 s.p. f-ly; 5 ill.

Description

The utility model relates to the field of mechanical engineering, more specifically to the fences (shells) of flexible transitional joints for coupled vehicles or aircraft telescopic ladders connecting the airport building with the plane.

The terms used in the present description will have the following interpretation:

- corrugation or corrugation - a wave-shaped fold on the surface of fabric, paper, metal, etc. or on the surface of products made from them [Large explanatory dictionary of the Russian language. - 1st ed.: St. Petersburg: Norint S.A. Kuznetsov. 1998]. The ends of the folds can be free or connected together, forming a closed shape.

- shawl - a piece of fabric cut as required, an element of a flexible fence. The shawls sewn together in a certain order form a fence or fragments thereof, connected by other means, for example, crimping with metal clips. Depending on the design of the fence and the location, it can have a different shape and be curved in a certain way;

- fabric - any flexible sheet material that does not allow water to pass, woven or non-woven, coated or not, with or without impregnation, single-layer or multi-layer, similar in its mechanical properties to woven materials from plant or synthetic fibers.

A corrugated flexible guard for an intercar passage is known, which is made in the form of a bellows rectangular with rounded corners, consisting of a series of identical corrugations, each of which consists of alternating straight lines curved along the rounding and eight curved cross-sections of Ω-shaped cross-sections made of rubberized fabric. The corrugations are interconnected by a metal edging, and the horizontal seams of the joints of the shawls of adjacent corrugations lie on the same line [FROM RU No. 2463173].

A disadvantage of the known fencing is its fragility, due to the mutual grinding of the threads of the seams on the bulges of adjacent corrugations located at the same level. During operation, the fence is continuously bent in horizontal and vertical planes, which is why the grinding occurs relatively quickly, leading to a violation of the tightness of the fence and, soon, to its destruction.

The closest to the proposed technical essence and the achieved result is a corrugated flexible guard of the inter-car transition made in the form of a rectangular bellows with rounded corners, consisting of a series of identical corrugations, each of which consists of alternating straight and curved eight U-shawls closed along the contour a cross-section of rubberized fabric, overlapped with each other so that the curved shawls at the joints lie on top of straight lines, when viewed from the outside. In the upper part of the fence, when viewed from the outside, the lower edges of the upstream shawls overlap the upper edges of the lower ones located on the outside of the guard, and in the lower part of the fence, on the contrary, the upper edges of the downstream shawls overlap the lower edges of the overlying ones.

The corrugations are interconnected by a metal edging, and the horizontal seams of the joints of adjacent corrugations lie on the same line [PM RU No. 165585].

A disadvantage of the known fencing is its fragility. The first reason for the fragility is that rain water flowing down the vertical straight walls of the corrugations, reaching their lower junction with curved scarves, begins to flow along the joint plane into the enclosure at the slightest weakening of the seam. During operation, the seams become loose, and when the gaps between the sewn scarves increase so much that almost all the water flowing down the walls is inside the fence, it is rejected.

The second reason for the fragility is the mutual grinding of the threads of the seams of the adjacent corrugations located at the same level. During operation, the fence is continuously bent in horizontal and vertical planes, which is why the grinding occurs relatively quickly, leading to a violation of the tightness of the fence and, soon, to its destruction.

The technical result from the use of the proposed utility model is to increase the durability of the fence.

This result is achieved by the fact that in the well-known corrugated enclosure of a flexible transition between coupled vehicles or a building and an airplane made in the form of a bellows, each corrugation of which is formed by scarves made of fabric overlapped to each other until a closed loop is formed, the seams of the joints of adjacent corrugations are spaced apart the direction of the tangent to the contour of the corrugation, and on the outside of the fence, the lower edges of the upstream shawls overlap the upper edges of the downstream.

In addition, the distance between the seams of the joints of adjacent corrugations is (2 ... 20) the thickness of the scarf fabric.

In addition, the ends of the joints of adjacent corrugations are spaced in the direction tangent to the contour of the corrugation.

In addition, the distance between the ends of the joints of adjacent corrugations is 5 ... 40 thicknesses of scarf fabric.

Due to the fact that the seams of the joints of adjacent corrugations are spaced in the direction tangent to the contour of the corrugation, the durability of the fence increases, since this design eliminates the friction of the seams of the adjacent corrugations against each other, eventually leading to grinding.

Due to the fact that the lower edges of the upstream shawls overlap the upper edges from the outside of the fence, the ingress of water flowing through the fence into it even during long-term operation, even if there are gaps at the joints, is virtually eliminated.

Due to the fact that the distance between the seams of the joints of adjacent corrugations is equal to or greater than twice the thickness of the scarf fabric, mutual touching of the seams is excluded for all practically possible bends of the fence in the vertical and horizontal planes.

Due to the fact that the distance between the seams of the joints of adjacent corrugations is equal to or less than 20 thicknesses of the tissue of the scarves, rational consumption of material is ensured, since exceeding this value of the strength of the connection does not increase, but requires excessive overlap of the upper and lower located scarves of the joint.

Due to the fact that the ends of the joints of adjacent corrugations are spaced in the direction tangent to the contour of the corrugation, the filling of the edges of scarves of adjacent corrugations into the crevice slot is facilitated and the tightness of their connection is increased, which ensures increased durability.

Due to the fact that the distance between the ends of the joints of adjacent corrugations is equal to or greater than 5 thicknesses of the fabric of the scarves, a good compression of the edges of the scarves of the adjacent corrugations is achieved when installing the edging or longitudinal firmware.

Due to the fact that the distance between the ends of the joints of adjacent corrugations is equal to or less than 50 thicknesses of the fabric of the scarves, rational consumption of material is ensured, since exceeding this value of the bond strength does not increase, but causes difficulty in the formation of scarves of a curved (at the corners of the fence) profile.

The essence of the utility model is illustrated by drawings.

In FIG. 1 shows a side view of the proposed fence.

In FIG. 2 shows a cross section of the fence with a vertical plane passing through the tops of the corrugations.

In FIG. Figure 3 shows the vertical plane section of the junction of curved and straight scarves and adjacent corrugations according to the proposed utility model when compressing the edges of adjacent corrugations with a metal edging.

In FIG. 4 is a horizontal section through the junction of FIG. 3.

In FIG. 5 for explanation, a vertical plane section is shown showing the junction of a curved and straight shawls and adjacent corrugations according to analogues of the prior art.

Identical elements of adjacent corrugations in FIG. 3 ... 5 are denoted by the same positions with the addition of a hyphen 1 or 2.

The proposed corrugated fencing of the flexible transition (Fig. 1) consists of a series of corrugations 1 connected by the edges, forming in the aggregate a bellows, the cross section of which is usually close to rectangular (Fig. 2) or trapezoidal. The height of the corrugations in most cases exceeds 2 meters, and the width exceeds 1 meter and can reach 2.5 meters. Therefore, for the convenience of manufacturing, each corrugation is usually made integral from several parts sewn together, called shawls in the prior art. Scarves can be made of a wide variety of materials: fabric, linen, rubberized or multi-layer fabric, polymer compositions, including reinforced. To reduce the nomenclature, the most difficult to manufacture corner scarves 2 are often unified for transitions of different sizes. The manufacture of straight scarves 3 of different lengths is not difficult.

Scarves are sewn together with overlapping seams 4 until a closed loop is formed. A distinctive feature of the proposed fence is that on the outside of the fence, the lower edges 5 of the upstream shawls overlap the upper edges 6 of the downstream. Due to this, water flowing from the top of the fence cannot flow into the gap between the scarves, even if it appears.

The seams of adjacent corrugations are spaced in the direction of the tangent 7 to the contour of the corrugation (in straight sections the direction of the tangent coincides with the direction of the outer part of the corrugation, as shown in Fig. 2), the distance between the seams of the joints of adjacent corrugations equal to or greater than twice the thickness t of the scarf fabric ( Fig. 1 and 2). Experimentally, by bending the fence in the vertical and horizontal planes, it was found that at h≥2t, the seams at the joints of adjacent corrugations do not touch each other if the bends are made within the limits possible during operation.

The maximum distance h between the seams of the joints of adjacent corrugations should not exceed twenty times the thickness t of the fabric of the scarves, that is, the ratio h≤20t must be fulfilled, rational consumption of the material is ensured, since exceeding this value of the bond strength does not increase, but requires excessive overlap of the upper and lower joint scarves .

There are two options for seam spacing. In the first of them, shown on the lower part of FIG. 1, all the scarves are absolutely identical, but the seams on adjacent corrugations are located with the offset described above. In this case, the seams of adjacent corrugations are at different distances from the end edge of the scarves. This simplifies the preparation of scarves, reducing their nomenclature. So, in corrugations, consisting of four corner and four straight scarves, all corner scarves are the same, and straight scarves have only two sizes in length.

The embodiment depicted on the top of FIG. 1 and in FIG. 2, when the seams stitching the shawls of one corrugation are at the same distance from the end edge of the shawls, but the adjacent shawls of the adjacent corrugations have different lengths, which ensures the spacing or spacing of the seams. In this embodiment, in corrugations consisting of four corner and four straight scarves, corner scarves have two sizes, and straight scarves are four.

The second option has two advantages. Firstly, the likelihood of stitching errors is reduced, since all seams are at equal distances from the end edge of the scarves. Secondly, the assembly of the fence is simplified and the reliability and tightness of the connection of the edges of the shawls of adjacent corrugations is increased. This connection in the prior art is usually carried out by compressing the edges with the edging 8 (Fig. 2 ... 5) of a special U-shaped profile. In the drawing of FIG. 5, the thickness of the border 8 is shown for clarity relatively thicker than actually happens. In the case when the seams are spaced according to the first embodiment, that is, the adjacent shawls of the corrugations are the same, at the joints, the edging 8 should compress four tissue thicknesses t at once. And outside the joints - only two (Fig. 3).

It is extremely difficult to insert four layers of fabric into a relatively narrow slit of edging 8 at once, moreover, as a rule, covered with a layer of sealant and with additional gaskets. The main thing is that with a fringing of a constant profile, while there are no others, it is not possible to achieve equally uniform compression of two and four layers of fabric, which reduces the strength of the connection and does not allow to achieve the required tightness.

Therefore, the variant with spaced end edges of the joints (the upper part of Fig. 1, Figs. 2, 4 and 5) is more profitable from the point of view of the manufacturability of the assembly and the durability of the fence. The rise in price of production, due to the fact that it requires a doubling of the number of standard sizes of scarves, is many times compensated by a decrease in labor costs for assembly and losses from marriage, not to mention an increase in durability.

Claims (4)

1. Corrugated fence of the transition, made in the form of a bellows, each corrugation of which is formed by scarves of fabric sewn together with each other until a closed loop is formed, characterized in that the seams of the joints of adjacent corrugations are spaced in the direction tangent to the contour of the corrugation, and on the outside of the fence the lower edges of the upstream scarves overlap the upper edges of the lower scarves. 2. Corrugated fence according to claim 1, characterized in that the distance between the seams of the joints of adjacent corrugations is 2 ... 20 thicknesses of scarf fabric. 3. Corrugated fence according to claim 1, characterized in that the ends of the joints of adjacent corrugations are spaced in the direction tangent to the contour of the corrugation. 4. Corrugated fence according to claim 3, characterized in that the distance between the ends of the joints of adjacent corrugations is 5 ... 40 thicknesses of scarf fabric.

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