DE102015113319B3 - Clamping device for mounting a fixing block on a tubular article and a corresponding arrangement - Google Patents

Abstract

The invention relates to a tensioning device (100) for mounting a fixing block (200) on a tubular object (300), wherein the tensioning device (100) has a tensioning bow (110) with a radius of curvature that is variable against a pretensioning and a respective one at opposite longitudinal ends (120) Tool holder (130) for a clamping tool (400), such that by clamping the clamping arc (110) over its opposite longitudinal ends (120), the radius of curvature of the clamping arc (110) to a radius of curvature of a tubular article (300) on which the fixing block (200) can be adjusted. The invention further relates to a corresponding arrangement and to a corresponding method.

Description

The invention relates to a clamping device for clamping a fixing block on a tubular article.

Fixing blocks are known from the prior art, which are positioned on the outer circumference of a tubular article, in particular a plastic tube, for different applications. These Fixierblöcke can serve as a stop as a benchmark or for positioning concrete weights for weighting the pipeline underwater, for example. In addition, the fixing blocks may be intended to facilitate the handling of large and heavy pipes.

Such Fixierblöcke are usually designed as flexible components with variable radius of curvature in order to achieve a radius adjustment of the fixing block to the given radius of the tubular member can. The fixing blocks are essentially formed as plastic components, which can be welded by means of Heizwendelschweißtechnik on plastic pipes and the like on the outer circumference. In order to enable the radius adjustment of the fixing block to the outer peripheral radius of the tubular article and to press the fusing block for welding to the outer circumference of the tubular article, it is known to clamp the fixing block on the tubular article by means of tensioning straps. Such a tensioning device is, for example, from Plasson Ltd. sold under the name "Flex Restraint".

Furthermore, it is known from the prior art that Fixierblöcke be used in pipe relining as a fixed bearing for fixing the pipe ends and prevention of pipe shrinkage in the retracted line. Since the drawn-in pipe ends are partly installed in very hard to reach places, an encompassing belt solution can not be used. The fixation of the blocks must then transfer the clamping pressure to the pipe surface via a radial gripping clamping device.

The CH 666 438 A5 describes a tensioning device for holding a saddle provided with a molded part on a plastic tube, wherein the tensioning device has a provided with different suspension lugs strap, one of which is mounted in an end portion of a saddle. The strap is attached to a ferrule part, wherein the displaceable with a spindle ferrule part is supported on the end portion of the saddle. By turning the spindle by means of the handle, a clamping pressure can be generated via the compression spring. The GB 2529704 A describes a clip with adjustable hook ends. From the DE 73 39 039 U is a power clamp known.

It is therefore an object of the invention to provide a tensioning device of the type described above, which does not have the disadvantages of the devices known from the prior art and in particular is easy to handle.

This object is achieved by a clamping device with the features of claim 1. The independent claim 8 relates to a corresponding arrangement of a tensioning device, a tubular article and a fixing block. The independent claim 10 relates to a corresponding method for mounting a fixing block on a tubular article. The dependent claims relate to advantageous embodiments of the invention.

Accordingly, the tensioning device has a tensioning bow with a radius of curvature which is variable in relation to a pretension and at opposite longitudinal ends in each case a tool receptacle for a tensioning tool. It is thereby achieved that, by clamping the tensioning bow over its opposite longitudinal ends, the radius of curvature of the tensioning bow can be adapted to a radius of curvature of a tubular object to which the fixing block is to be clamped.

The tension bow may comprise a strip or plate-shaped element of flexible steel, preferably spring steel, or long fiber reinforced material. Furthermore, the tension bow in an unbiased position can have an infinite radius. However, the tension bow can also have an infinitely different radius in an unbiased position, and thus have an initial curvature with a specific radius smaller than infinity.

In order to allow an adaptation of the clamping device to different pipe diameters, it can be provided that an arc length in the longitudinal direction of the clamping arc is adjustable by at least one of the tool holders for a clamping tool in the longitudinal direction of the clamping arc is displaceable. In this case, the at least one displaceable tool holder can be fixable in different adjustment positions in the longitudinal direction. For this purpose, the tool holder can be connected via a guided in a slot fastening means with the tension bow. The slot can have either the tension bow or the tool holder. Preferably, both tool holders are designed to be displaceable in the longitudinal direction of the tensioning bow.

In order to achieve a defined position of the fixing block with respect to the tensioning device, it can be provided that a receptacle for a fixing block is formed in the longitudinal direction between the tool receptacles on a side of the tensioning bow facing the fixing block in the operating position of the tensioning device. In this case, the receptacle for the fixing block may be formed by the fixing block facing side of the tensioning bow for support on an upper side of the Fixierblocks and two stops for contact with opposite end faces of the Fixierblocks, wherein the stops extend from the fixing block facing side of the tensioning bow and are arranged at the opposite longitudinal ends of the tensioning bow.

According to another aspect, the invention relates to an arrangement of a tensioning device according to one of the preceding claims, a tubular article and a fixing block, wherein the fixing block on the clamping device and with the aid of a clamping tool which engages the opposite tool receptacles on the outer circumference of the tubular Object is spanned.

The fixing block may be arranged with the tensioning device at an open longitudinal end of the tubular article, wherein the clamping tool is supported on an inner periphery of the tubular article. The clamping tool can be, for example, a screw clamp or the like.

• – Bereitstellen eines rohrförmigen Gegenstands, eines Fixierblocks sowie eines Spanngeräts nach einem der vorangegangen Ansprüche;
• – Auflegen des Fixierblocks auf einem Außenumfang des rohrförmigen Gegenstands sowie des Spanngeräts auf einer dem Außenumfang des rohrförmigen Gegenstands abgewandten Oberseite des Fixierblocks, so dass der Fixierblock in einer Aufnahme des Spanngeräts aufgenommen ist; und
• – Aufspannen des Spanngeräts und des darin aufgenommenen Fixierblocks mithilfe eines Spannwerkzeugs, das an den gegenüberliegenden Werkzeugsaufnahmen angreift, auf den rohrförmigen Gegenstand.

According to yet another aspect of the invention, this describes a method of mounting a fixation block on a tubular article comprising the steps of:

• - Providing a tubular article, a fixing block and a clamping device according to one of the preceding claims;
• - placing the Fixierblocks on an outer circumference of the tubular article and the clamping device on a side facing away from the outer circumference of the tubular article top of the fixing block, so that the fixing block is received in a receptacle of the tensioning device; and
• - Clamping the clamping device and the fixing block received therein by means of a clamping tool which engages the opposite tool holders, on the tubular article.

The method may further comprise adjusting the length of the tension bow to a given diameter of the tubular article by varying the spacing of the tool holders in the longitudinal direction of the tension bow relative to each other.

Further details of the invention will be explained with reference to the following figures. Showing:

1 a side view of an embodiment of the tensioning device according to the invention;

2 a plan view of the tensioning device according to 1 ;

3 an arrangement of an embodiment of the clamping device according to the invention and a plurality of clamping tools;

4 an application example of the arrangement according to 3 wherein the fixing block is not yet fully mounted on the tubular article;

5 an application example according to 4 wherein the fixing block is fully mounted on the tubular article; and

6 a further embodiment of the clamping device according to the invention without clamping tools.

This in 1 illustrated tensioning device 100 consists essentially of a tension bow 110 , at the opposite longitudinal ends 120 one tool holder each 130 for a clamping tool (not shown) is arranged. The tool holders 130 are in the longitudinal direction of the tension bow 110 slidable to the length L of the tension bow 110 and thus the tensioning device 100 to adapt to different diameters of the tubular article. The tool holders 130 have undercut grooves 131 on, for example, for the arrangement of the Andrucktellers a screw clamp or the like, which is to serve as a clamping tool.

In the synopsis of 1 and 2 it can be seen that the tensioning device 100 is formed as a substantially elongated member whose clamping arc 110 a strip or plate-shaped element 111 having. Half the length L of the tensioning device 100 is a fixation 114 formed, with which the tension bow 110 via its the Fixierblock (not shown) facing side 112 can be mounted on the fixing block.

The tension bow 110 or the plate-shaped element 111 has a slot 114 in which a fastener 115 , For example, a screw, in the longitudinal direction of the clamping arc 110 is displaceable, to the already described above length adjustment of the tension bow 110 to realize.

The 3 - 5 show an application example of a tensioning device according to the invention 100 in which three clamping tools 400 are provided to with the help of the tensioning device 100 a fixing block 200 on a tubular object 300 to span. In addition to the two mandatory clamping tools 400 at the two longitudinal ends 120 of the clamping device 100 is another optional clamping tool 400 provided, which is half the length of the tension bow 110 engages to provide additional contact pressure in the middle area of the fixation block 200 to reach.

The 4 and 5 in particular also illustrate how the fixing block 200 in the recording 113 of the clamping device 100 is included (compare also 1 ). The recording 113 gets straight from the bottom 112 of the tension bow 110 and the two attacks 101 formed, with the bottom 112 of the tension bow 110 just on the top 201 of the fixation block 200 abuts while the stops 101 on the opposite ends 202 of the fixation block 200 abut, so that the fixing block 200 over its top 201 and the two ends 202 are enclosed by the clamping device, whereby it is achieved that the fixing block 200 with uniform contact force over its entire support surface 240 on the outer circumference 310 of the tubular element 300 can be pressed.

The 4 and 5 continue to show that in one embodiment, the clamping tools 400 can be designed as screw clamps, which via a pipe end 320 in the illustrated arrangement of the tubular article 300 , the fixation block 200 and the tensioning device 100 are set up. Here are the clamping tools 400 on an inner circumference 330 of the pipe 300 supported while using their screw-adjustable Anpressteller on the tool holders 130 or on the tension bow 110 attack.

The fixation block 200 has an edition page 230 about which he is on the tubular object 300 is placed, and of which radially extending ribs 220 on whose free ends the bearing surface for the tension bow 110 of the clamping device 100 form.

The clamping tools 400 are designed with a handle for manual operation. Instead of the handle can also be provided that the clamping tools 400 having a compact structural coupling for a tool. For example, the clamping tools may have an external hexagon.

The 6 shows a further embodiment of the tensioning device according to the invention 100 , which is shown without clamping tools for better illustration. As in the previously described embodiments, the tensioning device consists 100 essentially from a tension bow 110 , at its longitudinal ends 120 one tool holder each 130 for each one clamping tool is arranged. To achieve the best possible contact pressure of a centrally between the two end tool holders 130 arranged further clamping tool (see, the embodiment according to the 3 - 5 ) is a pressing device 500 provided, which centrally between the two end tool holders 130 on the tension bow 110 is attached. The pressing device 500 consists essentially of a pressure plate 510 that have over height compensation elements 520 on the tension bow 110 is attached. At the bust, the pressing device 500 another tool holder 530 for receiving a clamping tool (not shown). The height compensation elements 520 serve to the curvature of the tension bow 110 to compensate and thus a uniform contact force in a central region of the clamping arc 110 between the two end tool holders 130 to ensure.

The features of the invention disclosed in the foregoing description, in the drawing and in the claims may be essential for the realization of the invention both individually and in any desired combination.

LIST OF REFERENCE NUMBERS

100

tensioning device

110

tensioning bow

111

strip or plate-shaped element

112

the fixing block facing side

113

admission

114

Long hole

115

fastener

120

longitudinal end

130

tool holder

131

undercut groove

200

fixing block

201

Top of the fuser block

202

Front side of the fixing block

210

opposite upper side of the fixing block

220

rib

230

support side

300

tubular object

310

outer periphery

320

open longitudinal end

330

inner circumference

500

pressure device

510

pressure plate

520

Height compensation element

530

tool holder

L

arc length

Claims (11)

Tensioning device ( 100 ) for mounting a fixing block ( 200 ) on a tubular article ( 300 ), wherein the tensioning device ( 100 ) a tension bend ( 110 ) with a curvature variable radius of curvature and at opposite longitudinal ends ( 120 ) each have a tool holder ( 130 ) for a clamping tool ( 400 ), so that by clamping the tension bow ( 110 ) over its opposite longitudinal ends ( 120 ) the radius of curvature of the tension bow ( 110 ) to a radius of curvature of a tubular article ( 300 ) to which the fixing block ( 200 ) can be adjusted. Tensioning device ( 100 ) according to claim 1, wherein the tension bow ( 110 ) a strip or plate-shaped element ( 111 ) of a flexible steel, preferably spring steel, or of plastic. Tensioning device ( 100 ) according to claim 1 or 2, wherein the tension bow ( 110 ) has an infinite radius in an unbiased position. Tensioning device ( 100 ) according to one of the preceding claims, in which an arc length (L) in the longitudinal direction of the tension bow ( 110 ) is adjustable by at least one of the tool holders ( 130 ) for a clamping tool ( 400 ) in the longitudinal direction of the tension bow ( 110 ) is displaceable. Tensioning device ( 100 ) according to claim 4, wherein the at least one displaceable tool holder ( 130 ) Can be fixed in different positions in the longitudinal direction. Tensioning device ( 100 ) according to any one of the preceding claims, wherein at a in operating position of the tensioning device ( 100 ) a fixing block ( 200 ) facing side ( 112 ) of the tension bow ( 110 ) in the longitudinal direction between the tool holders ( 130 ) a recording ( 113 ) for a fixing block ( 200 ) is trained. Tensioning device ( 100 ) according to claim 6, wherein the receptacle ( 113 ) for a fixing block ( 200 ) from the fixing block ( 200 ) facing side ( 112 ) of the tension bow ( 110 ) to rest on an upper side ( 201 ) of the fixation block ( 200 ) as well as two attacks ( 101 ) for abutment with opposite end faces ( 202 ) of the fixation block ( 200 ), whereby the stops ( 101 ) from the fixing block ( 200 ) facing side ( 112 ) of the tension bow ( 110 ) and at the opposite longitudinal ends ( 120 ) of the tension bow ( 110 ) are arranged. Arrangement of a tensioning device ( 100 ) according to one of the preceding claims, a tubular article ( 300 ) and a fixing block ( 200 ), whereby the fixing block ( 200 ) over the tensioning device ( 100 ) and using a clamping tool ( 400 ) on the opposite tool holders ( 130 ) attacks, on the outer circumference ( 310 ) of the tubular article ( 300 ) is stretched. Arrangement according to Claim 8, in which the fixing block ( 200 ) with the tensioning device ( 100 ) at an open longitudinal end ( 320 ) of the tubular article ( 300 ) and wherein the clamping tool ( 400 ) on an inner circumference ( 330 ) of the tubular article ( 300 ) is supported. Method for mounting a fixing block ( 200 ) on a tubular article ( 300 ) comprising the steps of: - providing a tubular article ( 300 ), a fixation block ( 200 ) and a tensioning device ( 100 ) according to any one of the preceding claims; - placing the fixing block ( 200 ) on an outer circumference ( 310 ) of the tubular article ( 300 ) and the tensioning device ( 100 ) on an outer circumference ( 310 ) of the tubular article ( 300 ) facing away from the top ( 210 ) of the fixation block ( 200 ), so the fixation block ( 200 ) in a recording ( 113 ) of the tensioning device ( 100 ) is included; and - clamping the tensioning device ( 100 ) and the fixation block ( 200 ) using a clamping tool ( 400 ), which on the opposite tool holders ( 130 ) on the tubular article ( 300 ). The method of claim 10, further comprising adjusting the length (L) of the arch ( 110 ) to a given diameter of the tubular article ( 300 ) by the distance of the tool holders ( 130 ) in the longitudinal direction of the tension bow ( 110 ) is varied with each other.

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