WO1994018484A1

WO1994018484A1 - Support fixture for a pipe, in particular for an electrical conduit

Info

Publication number: WO1994018484A1
Application number: PCT/DE1994/000112
Authority: WO
Inventors: Karl-Heinz Gorny; Norbert Schuch
Original assignee: Karl-Heinz Gorny Gmbh
Priority date: 1993-02-10
Filing date: 1994-02-04
Publication date: 1994-08-18
Also published as: EP0638155A1; DE4303958A1

Abstract

The support fixture (1, 1') for a pipe (2), and in particular for an electrical conduit, has a plurality of connectable clamping elements (3, 4) which are applied against the pipe (2). A number of plastic sliding elements (10) are arranged on the inner periphery of the clamping elements (3, 4) for the pipe (2), and at least one spring-loaded contact element (13) arranged on the inner periphery of the clamping elements (3, 4) for the pipe (2). The sliding elements (10) are ball segments which are movably fitted so as to project from matching ball-segment wells (11) in the clamping elements (3, 4). The ball segments (10) have linear or flat surfaces which contact the pipe (2).

Description

Support clamp for a pipe, especially for an electrical pipe

The invention relates to a support clamp for a pipe, in particular for an electrical pipe conductor with the features of the preamble of claims 1 and 6.

Support clamps for electrical pipelines are known. A known support clamp for electrical pipelines consists of two parts that can be clamped together or connected to one another, a lower clamp part and a cover-like clamp upper part. The lower part of the clamp forms a molded flange for mounting e.g. on an insulating support or the like. The lower part of the clamp has a rotatable roller in the middle, the axis of rotation of which runs transversely to the longitudinal axis of the pipe. The role is slightly convex. The tube end can be pushed into the clamp with a small gap. Depending on the spherical shape of the roll, the pipe can be moved to a limited extent but also in terms of angle. The disadvantage is that the formation of the plastic role, the storage and the recess for the role in the terminal rear part is complex. If there is an angular deviation of the pipe relative to the roll, the support is changed, as a result of which increased wear occurs on the roll. A smooth movement of the pipeline with an angular deviation is not possible in such a support clamp.

It is also known to provide plastic slide rails in a cylindrical shape in the lower part of the support clamps of similar construction. In addition, equipotential bonding is provided by a galvanically tinned compression spring in the terminal cover. It is also known to provide a wobble element in the foot of the support clamp. The base part contains a mushroom-shaped head and there is a corresponding recess in the clamp base. The space between the mushroom head and the recess is filled with elastic material. This storage using a wobble element is expensive to manufacture. The elastic material is subject to aging. The wobble movement transverse to the longitudinal axis of the tube is limited.

The invention has for its object to provide a support clamp that is simple in construction, has little wear and is less sensitive to aging. In addition, the limited sliding and angular movement should be smooth for the pipeline.

The invention solves this problem with the characterizing features of claims 1 and 6.

The fact that ball segments are used as sliding parts means that the tube forms the best possible bearing for the tube conductor during sliding and angular movements, and the least possible abrasion of the sliding parts made of plastic is achieved.

Here, a support clamp with an outer enclosure as well as an inner bearing of the pipe is possible.

In addition, the foot support of the support clamp offers a safe limitation of the mobility of the support clamp transversely to the longitudinal direction of the pipeline, but allows limited mobility in the longitudinal direction of the pipeline.

Further refinements of the invention result from the subclaims. The invention is explained below with reference to an embodiment shown in the drawing. The drawing shows:

Figure 1 is a schematic cross section of a support clamp according to the invention with tube pus.

Figure 2 is a vertical longitudinal section along the line II-II in Fig. 1.

3 shows a schematic cross section of a modified support clamp according to the invention;

Figure 4 is a vertical partial longitudinal section along the line IV-IV in Fig. 3.

Fig. 5 shows a cross section of a support clamp as in Fig. 1 with a modified foot and

6 is a partial side view of FIG. 5.

The support clamp 1 for a pipe 2, e.g. As usual, an electrical pipe conductor consists of an upper clamp part 3 and a lower clamp part 4. The upper clamp part 3 and the lower clamp part 4 have lateral flanges 5, 6. Clamp upper part 3 and lower clamp part 4 can be clamped together with screws (not shown) in the area of these flanges 5, 6. The terminal parts 3, 4 lie in the end position with their flanges 5, 6 against one another. The terminal parts 3, 4 are made of metal, preferably aluminum.

In the clamped position of the clamping parts 3, 4, there is a distance in the form of an annular space 9 between the inner wall 7 of the clamping parts 3, 4 and the outer tube wall 8. The clamping parts 3, 4 accommodate sliding parts 10 made of plastic. Three sliding parts are preferably arranged in a star shape. Here are two sliding parts 10 in Terminal lower part 4, arranged symmetrically to the vertical center plane at an angle of 45 ° to it.

The sliding parts 10 are designed in the form of spherical segments. They are accommodated by suitable pockets 11 in the lower part 4 of the terminal. The pockets 11 are also spherical segment-shaped, the central plane collapsing or recessed in the outer surface of the lower clamp part 4, a cylindrical space then connecting to the outside, which is deformed after the sliding parts 10 have been inserted, e.g. by pressing in such a way that the sliding parts 10 remain movable in the pockets 11, but can no longer be removed from the pockets 11.

The sliding parts 10 project beyond the inner wall 7 of the terminal parts 3, 4 with their end faces 12. The end faces 12 can be flat. A linear contact with the pipe conductor 2 then results in each case. However, they can also be curved in accordance with the radius of curvature of the pipe conductor 2. A flat system then results.

The two lower sliding parts 10 provide a load-bearing support for the tubular conductor 2.

The upper clamp part 3 has a contact part 13 in the middle. This is also spherical segment-shaped. The end face 14 is in turn flat or curved in accordance with the radius of the pipe 2 and lies against the outer circumference of the pipe.

The contact part 13 is held by a metallic bearing part 15 which is guided in a bore 16. The bearing part 15 in turn has a matching, spherical segment-shaped pocket 17. The edge of the cylindrical bearing part 15 is pressed inwards, so that the contact part 13 is movable, but cannot be removed. The bottom 18 of the bearing part 15 is opened by a compression spring 19 which is supported with its other end in a blind hole 20. Potential equalization is ensured by the metallic spring 19, the metallic bearing part 15 and the metallic contact part 13. In addition, the contact part 13 acts like a sliding oil 10 with regard to the possibility of movement of the pipeline 2. The lower clamp part 4 preferably has a rectangular foot 20, via which the support clamp 1 can be fastened, as usual, to an insulating support or the like, not shown.

As can be seen from FIG. 2, the pipe conductor 2 can be slid in the longitudinal direction in the support clamp 1, the frictional resistance being low due to the use of plastic sliding parts 10. In addition, as indicated in FIG. 2, there is a limited angular mobility of the pipeline 2. This angular mobility is made possible by the fact that there is a distance between the outer wall tube conductor 2 and the inner wall 7 of the terminal parts 3, 4. The bounding edges of the clamp can be chamfered.

The support clamp 1 'shown in Figs. 3 and 4 is e.g. suitable for storing the end of a pipe 2 inside and keeping it movable to a limited extent.

This support clamp 1 'has a preferably central, horizontal holding arm 31 which protrudes from the pipe end 30 and which is in a e.g. continues downward extending arm in a manner not shown. The end of the arm 31 has a plurality of support arms 32 projecting outwards. These are preferably connected in one piece to the holding arm 31. Three star-shaped arms 32 are preferably provided.

Here, two upwardly projecting arms 32 are arranged on both sides of the vertical central plane, symmetrically and at an angle of 45 ° to it. An arm 32 is provided centrally downward. The arms 32 can, as described, be formed at their ends with sliding parts 10 or a contact part 13. The design of the sliding parts 10 and 13 largely corresponds to the embodiment according to FIGS. 1 and 2.

5 and 6 show a modified design of the foot 21 of the embodiments according to FIGS. 1 and 2. Here, the lower clamp part 4 has a central hemispherical pocket 40. A hemispherical bearing part 41 is suitably mounted in this. The bearing part 41 is attached to a base part 43, e.g. a plate.

The base part 43 has a recess 44 through which a screw 45 is guided to the lower terminal part 4. The head of the screw 45 is sunk.

A preferably conical free space 46 is provided in the bearing part 41, surrounding the screw 45.

A movable spherical head 47 is attached to the screw end and bears against a matching spherical recess 48 on the underside of the bearing part 41.

The parallel side wall parts 50 of the lower clamp part 4, which continue downward, are centered, as can be seen in particular in FIG. 6, which leads directly to the upper side of the base plate 43. This prevents the terminal 1 from moving. The edges 50 extend forwards and backwards. This allows the support clamp 1 to move in the longitudinal direction of the pipe.

Claims

1. Support clamp for a pipe, in particular an electrical pipe conductor, with a plurality of connectable ones lying against the pipe

Clamp parts, a plurality of plastic sliding parts arranged on the inner circumference of the clamp parts for the tube and, if appropriate, at least one contact part for the tube which is resiliently arranged on the inner circumference of the clamp parts, characterized in that

that the sliding parts (10) are spherical segments which are protrudingly movably embedded in matching spherical segment-shaped pockets (11) in the clamping parts (3, 4), and

that the spherical segments (10) have linear or flat systems (12) for the tube (2).

2. Support clamp according to claim 1, characterized in that the ball segments (10) in the pockets (11) by pressing the

The edges of the pockets are immovable but movable.

3. Support clamp according to claim 1, characterized in that the pipe contact surface (14) of the spherical segment (10) is curved flat or adapted to the pipe radius.

4. Support clamp according to claim 1, characterized in that the contact part (13) for the tube (2) is also formed as a spherical segment, but made of metal, that the spherical segment in a spherical segment-shaped pocket (17) of a cylindrical bearing part (15) made of metal is held and that the bearing part is guided in a cylindrical guide (20) of a clamping part (3) and is acted upon by a metallic compression spring (19) on the bottom (18).

5. Support clamp according to claims 1 and 4, characterized gekenn¬ characterized in that the sliding parts (10) and optionally contact part (13) are arranged as a three-point system in the terminal parts (3,4), two sliding parts to each other at an angle of 90 ° and 45 ° from the vertical center plane.

6. Support clamp for a pipe, in particular an electrical pipe conductor, with clamp parts resting on the pipe, a plurality of plastic sliding parts arranged on the clamp parts and at least one spring-mounted contact part for the pipe, characterized in that

that the clamp parts (3, 4) for the pipe end (2) are designed to engage in the inside of the pipe, that slide parts (10) are arranged as spherical segments on the clamp parts (3, 4), which are arranged on the inner wall of the pipe (2) rest and in projecting spherical segment-shaped pockets (11) in the adhesive parts (3, 4) are supported so that they can move and that the spherical segments have linear or flat systems for the inner wall of the tube (2).

7. Support clamp according to claim 1, characterized in that the clamping parts have star-shaped arms (32), at the two ends of which the spherical segments (10, 13) are arranged and which are brought together to form a central part (31) which extends into one of the Continues tube (2) outwardly extending support rod and bracket.

8. Support clamp according to claim 1, characterized in that the lower clamp part (4) forms a foot (21) which forms a hemispherical pocket (40) in which a hemispherical head (41) of a base part (43) is mounted , whereby the clamp part and the head are held together by a central connecting screw (45).

9. Support clamp according to claim 8, characterized in that the foot end (50) of the lower clamp part (4) lies transversely to the Rohrlängs¬ direction on the base plate (43), so that no transverse mobility is possible.

10. Support clamp according to claim 9, characterized in that the foot end (21) of the lower clamp part (4) is formed in the pipe longitudinal direction from the center rising in both directions, so that there is a limited mobility in the pipe longitudinal direction.