RU2784274C2 - Fixation device and method for attachment of pad fittings for pipeline attachment - Google Patents

Abstract

FIELD: aviation.

SUBSTANCE: group of inventions relates to supports embracing supported pipes, mostly for hydraulic control systems of aircraft; it can be used for effective mounting of pads for pipeline attachment on bearing elements of an aircraft structure. A fixation device of pipes contains support and fixing pads made with recesses for supported pipes and with holes for rods of bolts with nuts, connecting pads. The device is equipped with an attachment bracket made in the form of a stamped plate with two support bars, one of which is attached to a base surface, and the other one is equipped with divergent grooves for rods and heads of connecting bolts. The mounting plate contacts with a support pad liner, wherein divergent grooves of the support bar contacting with the support pad liner are made in such a way that, after introduction of bolt heads through divergent grooves under the support bar of the attachment bracket and subsequent installation of the support pad, falling out of pads with bolts from the support bar of the attachment bracket is eliminated, even in case of loss of one nut. A method for attachment of pipes is also disclosed.

EFFECT: obtaining supports for pipes for hydraulic control systems of aircraft.

2 cl, 5 dwg

Description

Technical field

SUBSTANCE: group of inventions relates to supports covering supported pipes (F16L 3/10), mainly for aircraft hydraulic control systems (B64C 13/36). It can be used for effective installation of blocks for fastening pipelines on the bearing structural elements of the aircraft.

Prior Art

Known fastening devices according to the patents of the Russian Federation No. 2169305, No. 1306250, No. 2122673 (all F16L 3/10) have features similar to those of the fastening device according to the present application.

Fastening device according to RF patent No. 1106951, contains supporting and fixing elements, with the formation of a channel for placing a supported pipe, and a connecting bracket. Fastening according to patent No. 1106951 provides for the installation of a support element on the connecting bracket, pipe laying, installation of a fixing element. The fastening device according to this patent is difficult to construct and operate, and also has low reliability, as it has many moving parts.

An analogue of the claimed pipe fastening device is a fastening device - “Double support kit. Pipe supports 5” (Request “pipe supports istegroup.com”), containing support and fixing pads, made with recesses for supported pipes and with holes for connecting screws. Means of attaching the fastening device to the base surface are not provided, and the use of screws to connect non-metallic pads is impractical.

Also, an analogue for the claimed fastening device and pipe fastening method is a product of the type OST 1 13129-78, OST 1 13130-78, which contains support and fixing pads made with recesses for supported pipes and holes for connecting bolt rods. OST 1 13129-78, OST 1 13130-78 does not consider the issues of its installation on the base surface. The installation of the fastening device on the base surface causes the complexity of its installation and maintenance during operation.

The prototype for the claimed fastening device and pipe fastening method is US patent No. 9670949, containing support and fixing pads made with recesses for supported pipes and holes for rods of connecting bolts with nuts. US Pat. No. 9,670,949 does not address mounting a mounting device on a base surface.

Disclosure of invention

The invention and method (method) proposed by the applicant are designed to reduce the laboriousness of operating the fastening device, and when used in aircraft hydraulic control systems, to reduce the construction height of the attachment bracket of the fastening device, and therefore the weight of the fastening device, to increase operational safety.

The solution to this problem is achieved by implementing both the fastening device and the method of fastening pipes according to the present application.

To simplify installation, a pipe fastening device containing support and fixing blocks made with recesses for supported pipes and holes for rods of connecting bolts (see OST 1 13129-78, OST 1 13130-78 - Blocks for fastening pipelines with outer diameters from 4 to 36 mm for installation in places with low construction heights), used in conjunction with an additional connecting bracket, which has two support strips, one of which is designed to attach the bracket to the base surface, and the other, in contact with the support block, is made with grooves for inserting bolt heads with a minimum clearance from the supporting surface.

According to the invention, when installing pipes, the blocks are attached to the base surface by means of a connecting bracket, for which purpose bolt heads are inserted under the connecting bracket bar intended for connection to the support block, the support and fixing blocks are installed by putting them on the bolt rods, and the nuts of the bolts screwed over the fixing block. The support bar of the bracket in contact with the block is made with multidirectional grooves.

The bolt heads must be installed through the multidirectional slots in the support plate of the connecting bracket. Further installation of the support block makes it impossible for the bolts to fall out during subsequent installation.

The technical result achieved by using a group of inventions is determined by the fact that:

- Before fixing the pipes, the connecting bracket is fixed to the base surface.

- The use of substandard bolts or nuts is excluded due to the visual accessibility of the bolt thread when tightening the nut.

- Accelerated and simplified fastening of pipes due to the simplest putting on blocks on bolt rods.

- Due to the different direction of the grooves, it is impossible for the blocks with bolts to fall out of the support plate of the connecting bracket, even if one nut is lost.

- The complexity and cost of manufacturing components and mounting the assembly is reduced, the weight of the product is reduced.

The technical result is achieved by the fact that in the fastening device of the pipes, containing the support and fixing pads, made with recesses for the supported pipes, holes for the rods of the bolts connecting the pads with nuts, in accordance with the invention, the device is equipped with a connecting bracket, made in the form of a stamped plate with two support bars, one of which is attached to the base surface, and the other is provided with multidirectional grooves for the rods and heads of the connecting bolts and contacts with the lining of the support block, and the multidirectional grooves are made in such a way that after inserting the bolt heads through the multidirectional grooves under the support plate of the connecting bracket and subsequent installation of the support block, it is impossible for the blocks with bolts to fall out of the support plate of the connecting bracket even if one nut is lost.

The technical result is also achieved by the fact that in the pipe fastening method, which includes laying the supported pipes into the recess of the support block, installing the fixing block on the supported pipes and the support block, and then tightening the nuts on the bolts connecting the blocks and the connecting bracket located on the base surface, in accordance with the invention, the connecting bracket is made in the form of a stamped plate with two support strips, one of which is attached to the base surface, and the other is provided with multidirectional grooves for the rods and the heads of the connecting bolts and is designed to contact the lining of the support block, and the bolt heads are inserted under multidirectional grooves of the connecting bracket, after which a support block with an overlay is installed, putting it with holes on the bolt rods to ensure the fixation of the bolts during subsequent installation, while due to the multidirectional grooves, the blocks with bolts from falling out of the support block are excluded mounting bracket strips even if one nut is lost.

Implementation of the invention

The structural diagram of the invention is illustrated by a specific example of execution with reference to the attached drawing, in which the pipe fastening device is presented in three projections and isometry assembled with conditionally separated parts of the device in the process of pipe fastening.

The pipe fastening device shown in figure 1 contains a support 1 and a fixing shoe 2. Blocks 1 and 2 are made of dense rubber with recesses 3 and 4 for supported pipes 15 and with holes 5 and 6, respectively, for the rods of the connecting bolts 14. In the holes 5 and 6 for the rods of the connecting bolts 14 in the blocks 1 and 2, metal bushings are inserted with an interference fit 7 to make the structure more rigid. Block 1 is equipped with a bottom metal plate 8, and block 2 is equipped with an upper metal plate 9.

The connecting bracket 10 is made in the form of a stamped plate having two support strips 11 and 12, one of which - the support strip 11 - is designed to fasten the bracket 10 to the base surface "A", and the other - the support strip 12 - is in contact with the lining 8 of the support block 1 and is made with multidirectional grooves 13 for inserting the heads of the connecting bolts 14 under it. The pipes are fastened by sequentially performing several actions. First, the connecting bracket 10 is attached to the base surface "A" with the support bar 11. Then, under the support bar 12 of the connecting bracket 10, the heads of the connecting bolts 14 are inserted through the multidirectional grooves 13. After that, the support block 1 with the pad 8 is installed, putting it through the holes 5 on the rods connecting bolts 14. Next, supported pipes 15 are placed in the recesses 3 of the support block 1. The fixing block 2 with the lining 9 is installed on the supported pipes 15 and the support block 1, putting it with holes 6 on the rods of the connecting bolts 14. Finally, washers 16 are installed over the lining 9 and screw nuts 17.

The device assembly is shown in figures 2-5.

Claims (2)

1. Pipe fastening device containing support and fixing pads, made with recesses for supported pipes, holes for rods connecting the pads with bolts and nuts, characterized in that the device is equipped with a connecting bracket made in the form of a stamped plate with two support strips, one of which is attached to the base surface, and the other is provided with multidirectional grooves for the rods and heads of the connecting bolts and contacts with the pad of the support block, and the multidirectional grooves are made in such a way that after inserting the heads of the bolts through the multidirectional grooves under the support plate of the connecting bracket and subsequent installation of the support block, falling out is excluded blocks with bolts from the support plate of the connecting bracket, even if one nut is lost. 2. A method for fixing pipes, including laying the supported pipes in the recess of the support block, installing the fixing block on the supported pipes and the support block, and then tightening the nuts on the bolts connecting the blocks and the connecting bracket located on the base surface, characterized in that the connecting bracket made in the form of a stamped plate with two support strips, one of which is attached to the base surface, and the other is equipped with multidirectional grooves for the rods and heads of the connecting bolts and is designed to contact with the pad of the support block, and the bolt heads are inserted under the multidirectional grooves of the connecting bracket, after which install a support block with an overlay, putting it with holes on the bolt rods to ensure the fixation of the bolts during subsequent installation, while due to the different directions of the grooves, the blocks with bolts from falling out of the support plate of the connecting bracket are excluded even if one nuts.

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