RU2384927C2 - Suspension for fixation of cables and pipelines - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: invention is related to devices for fixation of electric cable routing subunits in them for supply of power to various consumer plants and for fixation of pipe bundles of various pipeline systems in the field of shipbuilding, transport, etc., and is related to mounting devices and suspensions. Suspension body is made of tape bent in cross section in the form of chute-like profile with walls of various height, bent at the angle of 90°, which provides for improved strength of suspension. In the area of outer part bending there is a lowering provided in high wall till height of smaller wall for provision of high-quality bending, at the same time radius of body bend is accepted as equal to 1.9-2.1 of smaller wall height size.

EFFECT: improved of process and design properties of suspensions.

9 dwg

Description

The invention relates to industries associated with the installation of electrical cables and pipelines, and can be used in shipbuilding, transport and electrical engineering.

Suspensions are known (see “Handbook of Marine Electrical Engineering”, Sudostroenie Publishing House, 1980, volume 3, p. 102, Fig. 3.29) containing a body made of a whole made of a profile of a gutter-shaped section with walls of equal height bent at an angle of 45 ° , and curved in the form of a U-shaped bracket. One of the sides of the body has a limb at the free end - a foot. A support square made of rolled steel is joined to the lower part of the suspension housing by contact welding. The length of the supporting square is taken taking into account the length of the upper limb.

The disadvantage of this design is its low strength due to the small moment of resistance of the cross section of the suspension housing. For this reason, it can only be used for the installation of small bundles of cables and pipes.

Known designs of cable suspensions (see “Directory of marine electrical engineering”, Sudostroenie publishing house, volume 3, p.102, fig.3.31a and OST 5.6180, p.103, p.1.42, draw.41; p.105, p.1.4 .3., Fig. 42), representing U-shaped welded frames made of steel with an unequal angle. On the inner surface of the welded frames, a cladding made of a profile of a groove-shaped section with walls of the same height bent at an angle of 45 ° is installed on welding.

The disadvantage of this design is its low technology, it consists of a large number of assorted parts, has a large mass and the complexity of manufacturing.

Known suspension design A.S. 1141490, comprising a housing made integrally of a trough-like profile in cross section with walls of equal height bent at an angle of 90 °. One of the sides of the body has in the upper and lower parts of the bends directed outward. The lower limb of the side is connected to the base of the housing by a ribbon jumper made in one piece with the base and the side wall. In addition, the side of the housing with the base has a locking connection.

The disadvantage of the suspension from a single piece according to the variant of A. with. 1141490 is the need to perform many operations on this part, which requires a multi-operation complex and expensive stamp. In addition, the suspension is unstable due to the small moment of resistance of the cross section of the gutter-shaped profile, and the absence of a lower supporting square reduces the suspension strength even more, therefore it can be used only for small bundles of electric cables and pipes.

The aim of the invention is the creation of a suspension housing simple in design, manufacturable with high strength characteristics.

The goal is achieved in that the suspension housing is made of a tape curved in cross section in the form of a groove-shaped profile with walls of different heights bent at an angle of 90 °. On the external part, in the place of bending, in the higher-height wall, the lowering is performed to the height of the smaller wall, while the bending radius is taken equal to 1.9-2.1 of the height of the smaller wall. The suspension housing is made of two parts interconnected by contact welding. The outer part is L-shaped, the inner U-shaped. Due to the use of a multi-height trough-shaped profile in the design of suspensions, it is possible to design suspensions with any strength characteristics.

The list of figures graphically depicted in the drawings:

Figure 1 shows the suspension for large bundles of cables and pipes, General view.

Figure 2 shows the suspension side view.

Figure 3 shows a view along arrow A of figure 1.

Figure 4 shows the suspension housing.

Figure 5 shows the inner bracket 2 of the suspension housing of figure 4.

Figure 6 shows a scan of the inner bracket 2.

Figure 7 shows the outer bracket 1 of figure 4.

On Fig depicts a scan of the bracket 1.

Figure 9 shows the suspension housing made in one piece. One use case of the invention.

Description of the suspension design and manufacturing technology.

Suspension for mounting electric cables and pipelines contains a housing consisting of parts 1 and 2, and a bar 3. On the side of the part 1 there are round holes 4 for the screw 5, on the side of the part 2 there are rectangular holes 6 for winding the shank of the strip 3. Side 1 and side 2 are interconnected by contact spot welding 7.

The scan of the inner bracket part 2 (see Figs. 1, 4 and 5), its flat billet 15, is performed on a multi-punch stamp in one stroke of the press, namely: puncturing four rectangular holes 6, cutting two bevels 16 and cutting down 19.

In this case, the workpiece is cut from the tape, which is fed into the stamp by a special installation. The operation segments are not shown.

The feeder moves the flat workpiece to the next bending position of the stamp parallel to the cutting part of the stamp for bending the side walls 9 and 10 along the bending line 20. All of these operations are performed in one press stroke.

In the next second stamp, the element of the bracket 21 is bent along the bending lines 18.

In the third stamp, bending of the staple element 22 along the bending line 16 is performed.

The development of the external bracket part 1 (see Figs. 1, 4 and 7), a flat billet 11, is performed on a multi-punch stamp in one stroke of the press, namely: puncture of four round holes 4, cutting down the lowering 13, the length of the workpiece from the tape fed into stamp special installation.

The transverse movement of the flat workpiece to the next position of the stamp, parallel to the cutting part, for bending the walls of the gutter-shaped profile 9 and 10 along the bending line 14 is carried out by the feeding device of the stamp.

Further, in the next stamp, the part 1 is bent along a radius of 8 along the bending limit lines 12.

The fabricated parts 1 and 2 are assembled and fixed to each other by spot electric contact welding 7.

The proposed suspension design from a gutter-shaped profile with different height walls allows you to:

1. To manufacture suspension housings of high strength and reliability for all types of suspensions.

2. The use of a bent profile allows to reduce the mass of suspension housings, especially suspensions having welded U-shaped frames made of unequal angular steel, on the inner side of which a lining of a groove-shaped profile is mounted for welding.

3. In the manufacture of pendants from two parts having a constant height and different sizes in width, there will be maximum unification, namely: it is possible to produce an internal U-shaped part of the same size for all types of pendants of this height.

4. The manufacturing process of pendants is simplified, cheaper and mechanized.

Claims (1)

Suspension for mounting cables and pipelines, comprising a housing made of tape curved in cross section in the form of a groove-shaped profile with side walls bent at an angle of 90 °, characterized in that the suspension body is made in cross-section of a groove-shaped profile with different height side walls, and in the place of bending of the outer part of the casing, a decrease in the high wall of the trough to the size of the smaller wall is made, the outer part of the casing is flexible along a radius equal to 1.9-2.1 of the height of the smaller wall.

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