Clamp for fastening a rubber cuff on the pipeline

 

Clamp for fastening a rubber cuff on the pipeline is intended for use in mechanical engineering. The clip contains rolled in the ring crimping element. The latter is made of soft material, such as annealed steel of circular cross section with a diameter of 4-7 mm On the blooming element welded lugs with holes. Stops are steel corners 25x25 mm Single focus welded flush on one end crimp element and parallel with the displacement along the length of the fence welded limiter Ends of the stopper and crimp element is cut at an angle of 30-45 to protect the rubber seal from cuts when tightening the clamp. The second emphasis is welded on the blooming element at a distance of 50-300 mm from its end. Is simplifying the design, reducing the complexity of manufacturing and Assembly. 2 C.p. f-crystals, 5 Il.

The invention relates to mechanical engineering, in particular to devices for fastening the rubber seals on the pipes within 57-1720 mm to ensure reliable sealing of the annulus crossings of trunk pipelines through roads and Railways. Known Sagem. RU patent No. 18435, F 16 L 33/02, 2000).

Also known clamp for mounting the sleeve on the hard nipples and sockets (see RU patent No. 2155292, F 16 L 33/08, 1999) containing the metal strip with transverse corrugations on one end and the second end of the tape - welded fence with a hole.

The aperture stop is mounted to the housing with screws. The body is made in the shape of a frame with a threaded hole for the screw.

Corrugated end of the tape is inserted into the groove of the frame, pull up, then tightened the screw.

The disadvantages of the above-described structures clamps are:

greater complexity of manufacturing, complicated installation, as well as the impossibility of compressing tape to achieve a sufficiently high crimp efforts that would provide a reliable seal.

The invention solves the problem of providing a reliable tightness of the cuff on the pipe by means of its compression element in the form of steel of circular cross section. This is due to the fact that the resulting maximum effort, when the compression is created at the point of contact crimping element with the surface of the cuff.

Fastening cuffs collar in the form of a metal tape may not provide the same effect as the proposed crimp element is mnie efforts are the same for all CE width.

Means to achieve the technical result consists in the fact that the clamp for attaching the rubber seal on the pipe is made of collapsed in the ring crimp element representing a soft material, such as annealed steel of circular cross section with a diameter of 4-7 mm, Both ends of the crimp element provided with welded lugs, representing steel corners, for example 25x25 mm

Stops made holes for the clamping bolts, such as size h mm

One of the stops welded on the blooming element at a distance of 50-300 mm from its end, and the second stop is welded flush to the other end crimp element, and the emphasis throughout its length parallel to abiemnom element is welded to the limiter from the same material as the crimping element.

The ends welded to the emphasis crimp element and limiter by tightening of the clamp, cut at an angle of 30-45.

The design of the clamp for attaching the rubber seals on the pipeline is illustrated by drawings:

in Fig.1 - offer the clamp Assembly view in axonometric;

in Fig.2 - the same, top view;

in Fig.3 is a side view of a focus limiter;

in Fig.4 is cut at an angle crimp element and limiting roty in the ring crimping element, representing annealed steel with a diameter of 4-7 mm

At one end 1 crimp element flush welded emphasis 2 (Fig.1, 2, 3), representing, for example, steel area 25x25 mm, with a hole 3 (Fig.3).

This emphasis throughout its length, parallel to the welded abiemnom element offset from him is welded to the stopper 4 from the same material as the crimping element.

The ends of the crimp element and limiter cut by tightening the clamp at a 30-45 angle (Fig.4) to protect the rubber seal from cuts when tightening the clamp.

The gap 5 between the compression element 1 and the stopper 4 (Fig.3) is selected somewhat larger than the diameter of the crimp element.

At the second end 6 crimp element at a distance of 50-300 mm from its end 7 is welded to the stop 8 with a hole (Fig.1). In holes 3 stops (Fig.3) pass the bolt 9, for example, with dimensions h mm, which is tightened by a nut 10 (Fig.1). Fastening cuffs on the pipelines with diameter from 57 to 530 mm carry out one-piece collar, and fastening cuffs on the pipelines from 530 to 1720 mm and more performed by clamp, consisting of two halves 11 and 12, each of which is structurally designed as one-piece yoke, provided is unaproved works as follows.

When slightly flattened continuous hot strip element located on part 6 (Fig.1) end 7 is introduced into the gap 5 in the stop 2, formed by the stationary end 1 coupling element and limiter 4.

Squeezing the lugs 2 and 8, bring them closer to each other. Thus by passing the end of the 7 crimp element through the gap 5 is provided exact coincidence of the axes of the holes 3 stops 2 and 8 (Fig.1, 4). Then into the holes of the lugs 2 and 8 are inserted through bolt 9 (Fig.1, 2, 3), for example, with dimensions h mm and is tightened by a nut 10. Thus the fixing of the clamp. Dismantling is done in reverse order.

Fastening cuffs to the pipeline diameter 530-1720 mm and more is a clip of two halves.

Applying the one-piece clamp for fastening cuffs on pipelines such a large diameter, it is impossible to ensure their reliable crimping, and hence the tightness of the connection.

When using a clamp consisting of two halves, provides equal tension clamp both parts, and hence a uniform crimping of the cuff around the diameter of the pipeline.

The use of the proposed technical solutions can simplify the design of the clip, to reduce the complexity of its manufacture and ego-1720 mm or more.

Claims

1. Clamp for fastening a rubber cuff on the pipeline, consisting of collapsed in the ring metal crimp element and mounted it welded lugs with holes, characterized in that the crimping element is made of a soft material, such as annealed steel of circular cross section with a diameter of 4-7 mm

2. Clamp p. 1, characterized in that one of the lugs welded on the blooming element at a distance of 50-300 mm from its end, and the second stop is welded flush to the other end crimp element and parallel to it along the length of the fence welded limiter from the same material as the tube member, the ends of the crimp element and limiter by tightening clamp cut at an angle of 30-45, and the distance between the selected size sufficient for receiving therein the free end crimp element.

3. Clamp p. 1, characterized in that the compression sleeves on pipes with a diameter of 530-1720 mm made of two parts, each of which is structurally designed as one-piece yoke, providing the same function.

 

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FIELD: mechanical engineering.

SUBSTANCE: end parts of the yoke are converging. The acute angle between the sides of the central and main part is no less than that between the sides of the end and main part. The ratio of tangents of the angles is 1-2. The ratio of the area of the cross-section of the main part to the square of the length of the sides of all three sections minus the length of the radial bend ranges from 0.003 to 0.010. The ratio of the diameter of the yoke in operation condition to the diameter of the released yoke is 1.1-1.3. The ratio of the length to the width of the main part of the yoke is 1-2. The radial folds are provided with areas that are in a contact with each other when the yoke is released. The radial folds are inclined at an angle from 12° to 17° with respect to the plane perpendicular to the plane of the yoke ring. The edges of the radial folds are U-shaped when the yoke is released.

EFFECT: enhanced reliability.

4 cl, 8 dwg

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