WO2019075585A1

WO2019075585A1 - Assembly apparatus for producing a press-fit connection between a fitting kit and a pipe section

Info

Publication number: WO2019075585A1
Application number: PCT/CH2018/000040
Authority: WO
Inventors: Roman Gubler; Stephan Krämer
Original assignee: Haelok Ag
Priority date: 2017-10-20
Filing date: 2018-10-03
Publication date: 2019-04-25
Also published as: EP3697572A1; EP3697572B1; EP3473384A1

Abstract

In an assembly apparatus (1) for producing a press-fit connection between a fitting kit (8) and a pipe section (9, 9'), the fitting kit (8) initially comprises a sleeve-like intermediate piece (81), which is intended to receive internally an axially introduced connection end (99) of the pipe section (9, 9'). A press ring (82) provided for sliding, by means of the assembly apparatus (1), over the intermediate piece (81) with the effect of creating a pressure-tight and mechanically loadable press-fit connection between the connecting end (99) and the intermediate piece (81) is a further component of the fitting kit (8). The assembly apparatus (1) comprises a first apparatus half (11) and a substantially identical second apparatus half (12) which is complementary to the first, which each have a basically hemispherical form, are separated from one another when stored and which have coupling means (24, 44; 73) for detachable joining with the concave sides thereof directed towards one another to achieve the operating state.

Description

Mounting device for producing a press connection between a fitting kit and a pipe section

Field of application of the invention

The invention relates to a mounting device for producing a press connection between a fitting kit and a pipe section. Part of the Fittingbausatzes is first a sleeve-like intermediate piece, which is intended for internal, axially inserted receiving a terminal end of the pipe section. Further, the fitting kit comprises a press ring, which is provided for pushing by means of the mounting device via the intermediate piece - with the effect of the emergence of a pressure-tight and mechanically strong press connection between the connection end and the intermediate piece.

State of the art

The subject matter of US 5,398,394 is a hydraulic press tool for making a press fit between a fitting kit and a pipe piece. The tool has a U-shaped, fixed first jaw, on which the adapter of the fitting kit is held. The press ring is pressed by a U-shaped, axially advanceable second jaw on the intermediate piece in which the pipe piece is inserted, whereby the press connection is formed. The constructions according to US 5,592,726 and WO 2016/179 070 A1 are based on the same principle. In the pressing tool described in WO 2012/021 545 A1, the kinematics is reversed, here the protruding from the pipe section press ring is fixed in a fixed jaw and the adapter fitting, the intermediate piece, in which the end of the pipe piece, inserted by an axially movable claw in the pressed in stationary press ring. These tools are likely to be suitable only for the processing of small pipe dimensions and leave leakage risks, since the force approach to the pressing rings is not radially comprehensive. The US 5,694,670 relates to a pressing tool for the same purpose, in which a first exchangeable pair of jaws can be mounted on a fixed bearing, which serves for the fixed encompassing of the intermediate piece of a Fittingbau- rate. To insert the intermediate piece, the upper jaw is removable or swung up to secure this subsequently in the closed position. An axially hydraulically displaceable bearing with an attached, exchangeable second pair of jaws is intended for engaging behind and pushing the press ring on the intermediate piece with simultaneous pressing of the inserted pipe section. The upper jaw can also be swung open from the second pair of jaws and then locked in the closed position, in order to first insert the pipe section with the attached press ring. The exchangeable pairs of jaws allow the processing of various tube dimensions and fitting designs. In the CH 707 389 A2 also a hydraulic pressing tool for producing a press connection between a fitting kit and a pipe section is disclosed. The two mirror-image housing parts are hinged together by means of two, over the entire width of the tool extending joints. The tool can be locked in the closed position. Interchangeable inserts are provided for installation in the tool to allow the compression of several pipe dimensions.

The hinged pressing tool proposed in US Pat. No. 6,299,254 B1 consists of two half-shell-shaped housings connected to one another by means of hinges, which can be fixed in a closed position by means of a band to be looped over to carry out the pressing operation. Due to the relatively light construction of this tool, the suitability is limited to smaller pipe dimensions. The construction according to DE 10 2014 103 21 3 A1 comprises a forceps-like press attachment, in which inextricably axially by means of a fitting kit to be pressed pieces of pipe can be used. Essentially, the press attachment consists of two jaws, each attached to a cross member at one end. are deflected, internally together form the axially continuous receiving area for insertion of fittings and pipe sections and have at the other end connecting contours for applying the pressing machine. With the separate pressing machine, the pushing forces necessary for actuating the pressing attachment are applied. The assembly of this mounting device is therefore relatively expensive and their handling in practice only limited practical.

Object of the invention

In a further development of the prior art, it is an object of the invention to provide a hydraulically driven mounting device for producing a reliable press connection between a fitting kit and a piece of pipe, which allows a practical handling of the preparation to the completion of the pressing process even when processing larger pipe dimensions , Furthermore, the mounting device to be provided should be used efficiently even in confined spaces.

Overview of the invention

In the case of the mounting device designed to produce a press connection between a fitting kit and a pipe section, the fitting kit comprises:

- A sleeve-like intermediate piece which is intended for internal, axially inserted receiving a terminal end of the pipe section; and

- A press ring, which is provided for sliding by means of the mounting device on the intermediate piece with the effect of the emergence of a pressure-tight and mechanically strong press connection between the terminal end and the intermediate piece.

The mounting device comprises a first device half and a complementary, substantially identical second device half, which are each in principle of a half-shell shape, separated from each other in the storage state and have to achieve the operating state coupling means for releasable assembly with their facing concave sides. The following are particularly advantageous details of the mounting device according to the invention: The amount of coupling means includes a pair of first hinge contours on each device half to achieve an operating condition with assembled device halves, and each device half has a pair of first hinge parts on which the respective first hinge contour is provided. In the state of assembled device halves, all first hinge contours lie on an axially extending axis of rotation. In the first hinge contours of the two device halves, at least one axle element can be used as a releasable connecting element along the axis of rotation about which both device halves are movable independently of one another.

The set of coupling means includes a pair of second hinge contours on each fixture half to provide an operating condition with assembled fixture halves in the locked closed position, and each fixture half has a pair of second hinge portions on which the respective second hinge contour is provided. In the state of assembled device halves, in the closed position, all the second hinge contours are aligned with each other. In this case, at least one closing element can be used as a releasable locking member in the second hinge contours of both device halves, whereby both device halves are locked in the closed position against each other.

The amount of coupling agent to achieve an operating state with assembled device halves, in partially open, spread Arre animal position on each device half includes a third hinge contour, which is present at one of the respective first parts of the shaver. In the state of assembled device halves, in partially opened, spread locking position, both third hinge contours are aligned with each other. In the third hinge contours of both device halves, a releasable holding element can be used, whereby both device halves, in partially open, spread position, are locked against each other. Here, the second hinge contours of both device halves remain unpopulated. For this operating state, the amount of coupling agent also contains at each device half a impact element, which is present at one of the respective first hinge parts. With the widest spread of the two device halves both stop elements abut each other and thereby limit a maximum opening angle between the two device halves. In this case, the stop impact elements and the third hinge contours of each device halves are aligned with each other, and the second hinge contours of both device halves remain unpopulated.

The first hinge parts and the second hinge parts on the first device half are offset relative to the first and second hinge parts on the second device half in their pairings as first hinge parts and second hinge parts in the direction of the axis of rotation such that when the device halves are assembled:

from the second device half, the pair of first hinge parts comes to rest between the associated pair of first hinge parts of the first device half; and

from the first device half, the pair of second hinge parts comes to rest between the associated pair of second hinge parts of the second device half.

For releasable connections a total of four locking pins are provided, namely:

- For joining the two device halves to each congruent together for two first hinge contours, of the four locking pins two come as axle elements are used; or

- For joining the two device halves in the locked Schliess- position to each congruent together for two first hinge contours and second hinge contours, of the four locking pins come as two axle elements and two as closing elements used; or

- For joining the two device halves in a partially opened, spread locking position to each congruent together for two first hinge contours and third hinge contours, wherein of the four locking pins two are used as axle elements and one as a holding element.

To provide temporarily not inserted locking pin, the mounting device depot forms. The locking pins are formed with a locking means to prevent the unintentional release of the hinge contours or depot forms. The depot forms are preferably formed on the front side of the mounting device, on the side of the third hinge contours, as insertion holes.

Each of the two device halves has:

- A fixed piston bearing with hydraulic connection and Kolbennestem, in which hydraulic piston rest;

- A fixed fitting, which are supported by springs;

- An axially displaceable between the piston bearing and the springs thrust ring; and

- Bolts, which are anchored on the one hand on the fitting and on the other hand on the piston bearing.

Here is the push ring:

- With activated hydraulic piston against the expansion of the springs from a rest position towards fitting for a pressing operation in an end position movable;

- Inactivated hydraulic piston by the expanding springs by repulsion from the end position to the rest position movable or remains in the rest position; and

- provided with an indicator, which serves for externally recognizable position indication.

Bolts:

- rest with their heads in bolt holes of the fitting;

- project axially through the coil springs designed as springs and the thrust ring;

- engage with their male threaded sections, which are diametrically opposed at the ends are arranged to the heads, in internally threaded holes in the piston bearing a; and

- Form for the seated on the bolt compressible springs and sitting on the bolt thrust ring an axial guidance.

On each of the two device halves:

- Are arranged on the piston bearing, the first hinge part with the first hinge contour and the stop element and the second hinge part with the second hinge contour;

- Are arranged on the fitting, the complementary first hinge part with the first hinge contour and the third hinge contour and the complementary second hinge part with the second hinge contour; and

- Is a first hinge part each a second hinge part diametrically opposite.

For various fitting assemblies and pipe sections to be pressed together, namely in the region between a smallest and a larger dimension, for insertion into each of the two device halves, respectively a first and a second half of the same dimension are provided, in the form of half circular rings. In each of the two halves of the device, the first half of the inlay should be attached to the fitting and the second half of the inlay should be attached to the push ring. In the closing position of the mounting device, the first and second inlay halves respectively mounted in the two device halves together give each the basic shape of a two-part annular insert. On the fitting, the insert serves the two assembled first Inlayhälften for fixed positioning of the intermediate piece of the fitting kit. At the push ring, the insert of the two assembled second Inlayhälften is intended for engaging behind the aufzuschiebenden on the intermediate piece press ring and thus for establishing the press connection between the fitting kit and a piece of pipe.

For fitting kits and pipe sections to be pressed together in a large dimension: - Are adequately sized first Inlayhälften intended for attachment to the fitting for the purpose of fixed positioning of the intermediate piece, however, serves to engage behind the aufzuschiebenden on the intermediate piece during the pressing process directly the thrust ring; and

- Has the piston bearing to each other prismatic and axially extending support surfaces to receive the pipe section axially centered.

For fixing the tube piece introduced into the mounting device and to be pressed with the fitting kit and for aligning the mounting device on this tube section, each of the two device halves has a locking unit. In a first variant, the locking unit is formed by an actuatable operating arrangement. In a second variant, the locking unit comprises an actuatable operating arrangement and an activatable by means of this clamping arrangement. In the closing position of the mounting device, both operating arrangements or both clamping arrangements are intended for diametrically pressing against the outer surface of the pipe section.

The operating arrangement comprises:

- The actuator, preferably in the form of a rotatable handwheel, with an extending from the actuator threaded spindle; and

- An attached to the piston bearing or integrated in the piston bearing bearing piece with a continuous internal threaded bore which is in engagement with the threaded spindle.

In this case, the threaded spindle is intended for direct pressing against the outer surface of the pipe section or for moving the clamping arrangement pressing against the outer surface of the pipe section.

The clamping arrangement comprises:

a U-shaped thrust piece with through bolt holes and with mutually prismatic, axially extending support surfaces for axially centered receiving and pressing against the pipe piece;

- Spacers, which serve as a spacer to a screwed to the pressure piece second half of the inlay; and - Screws that sit in the screw holes, the pressure piece and each one of the spacers protrude to intervene there exiting the Inlayhälfte.

The unit of both interconnected, in locked closed position device halves, attached to a pipe to be pressed with a fitting assembly, is movable in the state of unrestrained locking units in any rotational position.

One of the two device halves can be attached and fastened to a pipe section to be pressed with a fitting kit in any rotational position. And then the other half of the fixture can be connected to the first fixture half, which makes the fixture suitable for single-handed handling of pipe sizes up to DN 100 mm (= 4 inches).

Brief description of the attached drawings

Show it:

Figure 1A - the mounting device in the operating state, in locked

Closing position, in perspective view;

Figure 1 B - the mounting device according to Figure 1A, in a changed perspective view;

Figure 2A - the mounting device according to Figure 1A, in the stored state first and second device half detached from each other, in perspective view;

FIG. 2B shows the first and second device halves according to FIG. 2A, in a changed perspective view; FIG. 3A shows the first device half from FIG. 2A, without inlay halves, in a perspective view towards the inside;

FIG. 3B shows the first device half according to FIG. 3A, in perspective view on the outside;

FIG. 3C shows the first device half according to FIG. 3A, in a perspective, partial exploded view;

FIG. 3D shows the first device half according to FIG. 3A, in frontal exploded view;

3E, the first device half according to Figure 3A, with approximated

Inlays first size and locking unit, in perspective, partial explosive view;

Figure 3F, the arrangement according to Figure 3E, in perspective, more detailed

Exploded view;

FIG. 4A shows the second device half from FIG. 2A, without inlay halves, in FIG

Perspective view inside;

FIG. 4B shows the second device half according to FIG. 4A, in perspective view on the outside;

FIG. 4C shows the second device half according to FIG. 4A, in perspective, detailed exploded view;

FIG. 4D shows the second device half according to FIG. 4A, in frontal exploded view;

Figure 4E, the second device half according to Figure 4A, with approximated

Inlays first size and locking unit, in perspective, partial explosive view;

Figure 4F, the arrangement according to Figure 4E, in perspective, more detailed

Exploded view;

FIG. 5A shows the first half of the first half of the inlay, in perspective view;

FIG. 5B shows the associated second half-length of the first size, in a different perspective view;

FIG. 5C shows the first second half of the half in perspective view;

FIG. 5D shows the associated second second half of the inlay, in another perspective view; FIG. 5E - a third half of an inlay, in perspective view;

Figure 6A - the enlarged detail X1 of Figure 3F

FIG. 6B - the enlarged detail X2 from FIG. 3F

Figure 6C - the enlarged detail X3 of Figure 4F

FIG. 6D - the enlarged detail X4 from FIG. 4F

Figure 6E - the clamping arrangement according to detail X2 with approximate second

Inlayhälfte first size according to Figure 5B, in a perspective partial exploded view;

Figure 6F - the clamping arrangement according to detail X4 with approximate second

FIGS. 7A to 7H: the production of a press connection between a fitting kit and two pipe sections by means of the mounting device according to FIG

1A, in the principal phases of work, in each case in perspective view;

FIG. 7A-E Ste.Arbe | tsphase: the mounting device according to Figure 1A, located in a partially opened locking position;

FIG. 7B - second embodiment: in the mounting device according to FIG. 7A, a preassembled fitting assembly in the form of a straight sleeve is inserted and a first tube piece is aligned in alignment with it;

Figure 7C - Third. Note: the first piece of pipe is pushed into the fitting kit as far as it will go;

Figure 7D - Fourth. Working phase: the mounting device is in locked closed position, mounting device and first pipe piece are adjusted to each other, readiness to start the pressing process for the first pipe section

[The press connection between the fitting kit and the second pipe section was previously made during the same work phases and with the mounting device turned].];

Figure 7E - Fifth. Working phase: the pressing process with the first pipe section is completed, the mounting device is still in the locked closing position;

Figure 7F - Sixth working phase: following the situation in accordance with the gur 7E is the mounting device in a partially open locking position and can be removed from complete socket joint with fitting kit and two pieces of pipe;

FIG. 7G - S eve n te. By the way: the assembly device is removed from ready-made socket joint; and

Figure 7H - the finished sleeve connection as an enlarged detail

X5 from FIG. 7G.

Working Example

With reference to the accompanying drawings, the detailed description of an embodiment of the invention created according to mounting device for producing a press connection between a fitting kit and a pipe section below.

The following definition applies to the entire further description. If reference numerals are included in a figure for the purpose of graphic clarity, but are not explained in the directly associated description text, reference is made to their mention in the preceding or following description of the figures. In the interest of clarity, the repeated designation of components in other figures is usually dispensed with, as far as the drawing clearly shows that they are "recurring" components.

FIGS. 1A and 1B

This pair of figures illustrates the mounting device 1 in the operating state in the locked closed position. The mounting device 1 has a first device half 11 and a complementary, largely identical second device half 12, each of which is in principle of a half-shell shape, separated from each other in the storage state and can be releasably coupled together with their facing concave sides to produce the operating state. The respective device half 11, 12 is radially surrounded by a cover 77 on which systematically radially distributed three handles are attached. In the two covers 77, a slot-shaped window 77 'is provided in each case in the upper and in the lower region, in which an axially-shaped window 77' is provided. Moving indicator 37, the externally recognizable position indicator of the pressing operation initiating thrust ring 3 (see Figure 2A), which is driven out of the piston bearing 2, marked. The one hand, the respective device half 11, 12 arranged piston bearing 2 - this page is hereinafter referred to as a- side -, each has a hydraulic port 20 for the supply of hydraulic oil, a plurality of axially directed internal threaded holes 21, internally the two mutually prismatic support surfaces 20 "and the handwheel 64 extends the threaded spindle 65, which penetrates the bearing piece 63, which is fastened to the piston bearing 2. The locking unit 6 is axially fixed between the support surfaces 20 'of the respective piston bearing 2, but radially adjustable.

On the a-side, top, of the first device half 11, the first hinge part 23 with the peg-shaped stopper member 24 "thereon is visible, which is the complementary bow-shaped stop member 24" of the first hinge part 23 from the second device half 12 spaced disengaged. Both first hinge parts 23 are offset in a scissor-like manner one behind the other so that their stop elements 24 "are also offset from one another The first hinge contour 24 of the first hinge part 23 is currently concealed by the second device half 11 and is therefore not visible here Further, a closing element 73 'identical to the upper axis element 73 in the form is partially visible at the bottom The first hinge contours 24 are formed as through-holes.

On the side opposite to the piston bearings 2 - this side is referred to as b-side - is in the side surfaces of both device halves 11, 12 each extending in principle over half a circular ring plate-shaped fitting 4, on the concentric, inside a first Inlayhälfte 5 is fixed by means of resting in a first screw hole 52 screw 59 which engages in existing in the fitting 4 screw hole 42. The first inlay Halves 5 are also of semicircular geometry, but of smaller diameter compared to the shaped pieces 4. In closing position of both device halves 11, 12 with the two coming together first inlay halves 5 creates a kind of porthole. Each form piece 4 has two depot forms 47 - in the form of axial holes - on which the inserted storage in certain settings of the mounting device 1 unneeded axle elements 73, Schliesselemente 73 'or holding elements 73 serve. "Front side of the molding 4 open four bolt holes 41st which are concealed to the outside with caps 70 and in which bolts 7 rest.

On the b-side, above, the first hinge half 11 of the first device half 11 with the first hinge contour 44 present thereon and the second device half 12 likewise the first hinge part 43 with the first hinge contour 44 present thereon are visible. In both mutually aligned first hinge contours 44 inserted an axle 73 which forms, together with the plugging on the a-side axle 73, the axis of rotation A, around which both device halves 11, 12 can swing open limited from each other. Both first hinge parts 43 are offset one behind the other in a scissor-like manner so that their third hinge contours 44 ", which are currently also offset from each other and thus unoccupied, are inserted into the second, mutually aligned hinge contours 44 'of the two hinge parts 43' with the one on the a Because of their identical nature, all axle elements 73 and closing elements 73 'are interchangeable with each other and can also be used as a holding element 73 "(see FIG. Also, the first hinge contours 44, second hinge contours 44 "and the third hinge contours 44" are formed as through holes.

FIGS. 2A and 2B

From this pair of figures are now visible, on the second device half 12 on the a-side, the hitherto hidden first hinge contour 24 on the first hinge part 23 and the second hinge part 23 'with the second hinge contour 24' present thereon. Further, on the second device half 12, respectively the partial positive fit of the first Inlayhälfte 5 on the fitting 4 and the second Inlayhälfte 5 ^* on the push ring 3 visible. To fix the second half of the insert 5 'stuck from the side screws 59 in the first screw holes 52 which engage in existing in the thrust ring 3 screw holes 32.

FIGS. 3A to 3F

This sequence of figures illustrates in more detail of the first device half 11 its components and the assembly. Except the first and second hinge part 23,23 ', the hydraulic port 20 and the support surfaces 20', the piston bearing 2 has four axial internally threaded holes 21, two axial piston nests 22 and in transverse alignment the blind hole 21 ', an internally threaded bore 25' and two through holes 27 ' , Congruent to the internally threaded holes 2, the thrust ring 3 has four bolt holes 31. Furthermore, the simulcast receiving contour 30 with the therein existing two screw holes 32 and two spring ester 36 are present on the thrust ring 3. The molding 4 has except both hinge parts 43,43 'and the depot molds 47 in the axial alignment of the bolt holes 41 and the turn simsartig trained receiving contour 40 with the therein eccentrically arranged screw hole 42 and two directed into the interior springs spring 46th

In assembled situation sit the two hydraulic pistons 29 on the one hand with the stripping 27 in the piston nests 22 and press on the other hand against the thrust ring 3. Between thrust ring 3 and fitting 4 are the two types of coil springs 76, namely four strong and two smaller diameter pairs between the springs are 36,46 clamped. For cohesion of the first device half 11 are bolts 7, hang with their thickened heads T in the bolt holes 41 of the fitting 4, with the shanks 72, the bolt holes 31 of the thrust ring 3 protrude and finally engage with their male threaded portions 71 in the internal threaded holes 21 of the piston bearing 2 , The caps 70 are intended for insertion into the bolt holes 41 so that the heads T resting therein are covered. The two pen-shaped indicators 37 are fixed transversely in the thrust ring 3. through the screws 79 are the handles 78 - the first device half 11 quasi axially bridging - bolted to the piston bearing 2 and the fitting 4. To fix the bearing piece 63, the fixation pins 67, which are firmly seated therein, extend into the two through holes 27 'in the piston bearing 2.

From the a-side to the b-side, the axis of rotation A extends, which runs through the first hinge contour 24 in the first hinge part 23 and the first hinge contour 44 in the first hinge part 43. In operation, the axis of rotation A comes only when connecting the first with the second device half 11, 12 and the insertion of the two axle elements 73. The locked closing position between the first and second device half 11, 12 is reached only with the insertion of the two closing elements 73 '.

At the first Inlayhälte 5, the receiving contour 50, the retaining contour 55 and the off-center first screw hole 52 are visible. In the inserted state, the first Inlayhälte 5 is positively attached to the fitting 4, the receiving contour 40 protrudes into the retaining contour 55 and by means of the single screw 59, which engages in the screw holes 52,42, the first Inlayhälte 5 is secured to the fitting 4. The second insert 5 'also has a receiving contour 50 and a retaining contour 55, but has two first screw holes 52 and also two second screw holes 54 for securing the clamping assembly 6 " Parallel arranged spacers 68 together, and is bolted to the pressure piece 60 and the spacers 68 protruding screws 69 with the second Inlayhälte 5 ".

FIGS. 4A to 4F

The components and the assembly of the second device half 12 are largely identical to the first device half 11, so that reference is made to the detailed description to the figure sequence 3A to 3F and a renewed unnecessary. Overall, the two device halves 11, 12 are mirror images of each other. Only the stop element 24 "is bow-shaped and the two first hinge parts 23, 43 and the two the second hinge shaft 23 ', 43' are arranged on the piston bearing 2 and on the fitting 4 with axial offset relative to the first device half 11. In the locked closed position of the mounting device 1 with its two device halves 11, 12, therefore, the two first hinge parts 23 come to rest one behind the other, so do the two other first hinge parts 43, the two second hinge parts 23 'and the two other second hinge parts 43 ".

FIGS. 5A and 5B

All first and second Inlayhäiften 5,5 'have the basic shape of half circular rings. For processing pipe sections 9,9 'different outer diameter Inlayhäiften 5,5' adequate dimensions are provided. A first size of the inlay handles 5, 5 'is e.g. designed for pipe diameter of 2Vz = 76.1 mm, wherein the cross sections of the Inlayhäiften 5,5 'differ from each other within the same size, namely the first Inlayhäiften 5 to the fitting 4 and the second Inlayhäiften 5' are adapted to the thrust ring 3.

FIGS. 5C and 5D

A second size of the inlay handles 5, 5 'is e.g. designed for pipe diameter of 3 "= 88.9 mm.

Figures 5E

For a third size, e.g. for pipe diameter of 4 "= 1 14.3 mm, only first Inlayhäiften 5 are required for insertion into the two device halves 11, 12, namely for attachment to the fittings 4. The thrust ring 3 itself has the geometry, a pressing ring 82 of complementary size behind the end face 829 (see Figure 7H).

FIGS. 6A to 6F

The arresting unit 6 can comprise the two subassemblies operating arrangement 6 'and clamping arrangement 6 "or can only be formed by the operating arrangement 6", thus at the largest dimension to be processed pipe sections 9,9' and the elimination of the second Inlayhäiften 5 " the actuator member 64, preferably in the form of a rotatable hand wheel, with the actuator 64 centrally extending threaded spindle 65. The bearing member 63 has the central through hole 63 'for penetrating the threaded spindle 65 and on both sides of the through hole 63' each have a pin hole 67 '. On the free end of the threaded spindle 65 which engages in the internally threaded bore 25 'in the piston bearing 2, the first spring 66. The fixing pins 67 stuck on the one hand in the pin holes 67' of the bearing 63 and on the other hand in the through holes 27 'in the piston bearing 2. Mit increasing screwing of the actuators 64 in both device halves 11, 12 occurs each free end of the threaded spindle 65 from the associated internally threaded bore 25 'transversely out. In order to press the two ends of the threaded spindles 65 diametrically opposite directly with centering and fixing action against an inserted into the mounting device 1 pipe section 9,9 ', which is also comprised of the four prismatic support surfaces 20' of both piston bearing 2.

When processing pipe sections 9,9 'of smaller pipe dimensions, where second inlay halves 5' are installed in the mounting device 1, the locking unit 6 is used in the combination of operating arrangement 6 'and clamping arrangement 6 " no longer be encompassed by the four prismatic support surfaces 20 "of both piston bearings 2, but rest on the prism-shaped support surfaces of the pressure pieces 60 in the respective clamping arrangement 6" of the relevant device half 11, 12.

The clamping arrangement 6 "has the U-shaped pressure piece 60 with axially extending screw holes 62 and with mutually prismatic, axially extending support surfaces for axially centered receiving and pressing against a tube piece 9, 9 'inserted into the mounting device 1. Further, there is the pressure piece In addition, the clamping arrangement 6 "comprises a pair of second springs 66" for attachment to the two screws 69, a securing element 61 and the two spacers 68 as spacers to the second inlay half 5 'bolted to the pressure piece 60. In the assembled state, the screws 69 with the attached second springs 66 'project through the screw holes 62, then the two spacers 68, and finally engage in the second screw holes 54 in the second insert half 5 " A composite of clamping arrangement 6 "and second inlay half 5 'is produced (see FIGS. 3E and 4E). The operating arrangement 6 "is installed in the respective device half 11, 12 as described above." From the clamping arrangement 6 "connected to the second insert half 5 ', the pressure piece 60 lies in the cavity between the support surfaces 20' on the piston bearing 2 Securing element 61 is locked in the blind hole 21 'in the piston bearing 2, whereby the pressure piece 60 is secured against axial displacement.

With increasing screwing of the actuators 64 in both device halves 11, 12, the respective free end of the threaded spindle 65 exits transversely out of the associated internally threaded bore 25 ', but now presses radially onto the pressure piece 60, so that the pipe section 9, 9 pushed into the mounting device 1 'is now clamped between the prismatic support surfaces of the two pressure pieces 60.

FIGS. 7A to 7G

This sequence of figures illustrates the production of a press connection between a fitting kit 8 and two pipe sections 9, 9 'by means of the mounting device 1 in the basic working phases.

Figure 7Aj First Ajbd

The mounting device 1 is located in a partially opened locking position. Both device halves 11, 12 are pivoted about the axis of rotation A, for example, by 60 °, and equipped with the first and second Inlayhälften 5, 5 'and the Arretiereinheiten 6. On the b-side, an axle element 73 is inserted into the first hinge contours 44 lying congruently one behind the other. At the same time, on the a-side - here largely hidden - an axle element 73 is inserted into the first hinge contours 24, which likewise congruently follow one another. Both axle elements 73 lie on the shaft Axis of rotation A. There is also a stop on the b-side element 73 "in the consecutively congruent third hinge contours 44". In addition, on the a side, the stopper members 24 "are engaged with each other, thereby limiting the opening angle of both the device halves 11, 12. According to the indicators 37 on the right in the windows 77 ', the push rings 3 are in the home position.

F ig u r 7 B: Two i te Αφ ej ts h a se

In the state of partially opened locking position of the mounting device 1 is from the a-side a first pipe section 9, which has the outer surface 91, with the abutting surface 90 and the terminal end 99 ahead, brought axially to the mounting device 1. From the b-side, a fitting assembly 8, the two pressing rings 82 are pre-mounted proportionally pushed onto the intermediate piece 81, inserted. The exemplary embodiment of the fitting kit 8 shown here has the shape of a straight sleeve with the cutout 812 on the intermediate piece

81 in its axial center. The two compression rings 82 have outside each an annular end surface 829. The fitting assembly 8 is inserted into the mounting device 1, that the projecting receiving contour 50 of the two first inlays 5 engages in the cutout 812 of the intermediate piece 81 and on the end face 829 of the inside Mounting device 1 lying press ring

82, the second inlays 5 'with their receiving contours 50 pending. Other variants of fitting kits are the subject of the Applicant's European Patent Application No. 17 405 004.7. The previously unchanged position of the indicators 37 signals the further occupied by the thrust rings 3 starting position.

Figure 7C: _" jitteA!? tsRhase

In the state maintained partially opened locking position of the mounting device 1, the first pipe section 9, with the butt surface 90 and the terminal end 99 ahead, inserted into the fitting assembly 8 to an inner stop 819 (see Figure 7H) or otherwise to the a-side to a defined depth, such as in a fitting kit 8 in the form of a sliding sleeve. The continued unchanged position of the indicators 37 marks that the thrust rings 3 are still in their starting position. Fig. 7 D: .. Fourth working ph

The mounting device 1 was placed in the locked closed position. For this purpose, on the b-side, the holding element 73 "pulled from the consecutively congruent third Schamierkonturen 44" and both device halves 11, 12 pivoted about the rotation axis A to each other until the second hinge contours 44 'of the two second hinge parts 43' are aligned. The previously pulled holding element 73 "is inserted into the second hinge contours 44 'and thus has the function of a closing element 73' On the a side, the stop elements 24" have moved away from each other and another closing element 73 "has become in the congruent position The two handwheels 64 have been uniformly tightened for axial adjustment and clamping between the mounting device 1 and the inserted first pipe section 9. Thus, the readiness for starting the pressing process for the first pipe section 9 is established 37 and thrust rings 3 are still in their original positions between the fitting kit 8 and the second pipe section 9 'was previously made during a complete operation with reversible mounting device 1, the press connection.

F.iQur 7E: .. Fifth working phase

The now driven to the left indicators 37 indicate that the pressing process with the first pipe section 9 is completed, so the thrust rings 3 were driven by the applied piston bearings 2 and thus the second inlays 5 'with feed against the end face 829 of the affected press ring 82 this pushed into the proper end position on the intermediate piece 81.

FJ.9yr 7R..Next .Working phase

After carrying out the pressing process according to FIG. 7E, the loading of the piston bearings 2 was switched off so that the package of relaxing springs 76 has pushed back the composite of second inlays 5 * and thrust rings 3 into the initial position, recognizable by the original one again Position of the indicators 37. Further, the two handwheels 64 were released to release the first tube piece 9 from the locking units 6. In order to open the mounting device 1, the two closing elements 73 'have been removed from the pairings of the second hinge contours 24', 44 'and then the handling device 1 advantageously brought back into the partially opened locking position. Retaining member 73 " is recessed and stopper members 24 " are again engaged with each other.

Characters. JG.und.JH .Siebente Ar

The mounting device 1 located in a partially opened locking position was removed from the finished sleeve connection with fitting assembly 8 and both pipe sections 9, 9 '.

In the compressed state of the socket joint, consisting of fitting kit 8 - in the example shown in the form of a straight sleeve - and two pipe sections 9,9 ', the following picture emerges. The two pipe sections 9,9 'stuck in the intermediate piece 81 and bounce each with their existing at the terminal ends 99 annular abutment surfaces 90 to the inside in the spacer 81 radially encircling stop 819. The provided on the extension 811 of the spacer 81 claws 813 were through Squeezing action of the pressing rings 82 pushed up to the intended end position and the outwardly curved beads 818 on the intermediate piece 81 are pressed into the outer surface 91 of the tube pieces 9,9 'in a pressure-tight and axially fixing manner. The bouncing shoulders 826 of the pressing rings 82 abut against the shoulder surfaces 816 of the intermediate piece 81. At the level of both end faces 810 of the intermediate piece 81, the outer end face 929 of the associated pressing ring 82 closes in each case. Between the two outside diameter thickened ring segments 814 is the cutout 812, which is bounded on both sides by supporting surfaces 817. As far as the support surfaces 817, the respective end face 820 of the associated press ring 82 is pushed forward. The free-cutting 812 directed tongue segments 824 of the two compression rings 82 each have a latching element 825, which is latched for additional assurance of the relevant press connection in a recess 815 on the associated ring segment 814.

Claims

Patent claims

1 . Mounting device (1) for producing a press connection between a fitting assembly (8) and a pipe section (9, 9 '), wherein:

a) the fitting kit (8) comprises:

aa) a sleeve-like intermediate piece (81) which is intended for internal, axially inserted receiving a connection end (99) of the pipe section (9,9 '); and

ab) a pressing ring (82) which is provided for pushing by means of the mounting device (1) via the intermediate piece (81) with the effect of the emergence of a pressure-tight and mechanically strong press connection between the connecting end (99) and the intermediate piece (81) marked that

b) the mounting device (1) has a first device half (11) and a complementary, largely identical second device half (12), each of which is in principle of a half-shell shape, are present in the verwertzustand separated and to achieve the operating state coupling means (, ^73,73, 73 '24,44;24',^44;; 24 ", 44") have for releasably mating with their mutually facing concave sides.

2. Mounting device (1) according to claim 1, characterized in that

a) the quantity of the coupling means (24, 44 ^, 24 ', 44 ^, 24 ", 44", 73, 73', 73 ") for achieving an operating state with assembled device halves (11, 12) on each device half (11, 12 ) includes a pair of first hinge contours (24, 44), and each device half (11, 12) has a pair of first hinge parts (23, 43) on which the respective first hinge contour (24, 44) is provided;

b) in the state of assembled device halves (11, 12), all first hinge contours (24, 44) lie on an axially extending axis of rotation (A); and

c) in the first hinge contours (24,44) of both device halves (11, 12) at least one axle element (73) as a releasable connecting member along the Rotary axis (A) can be used, about which both device halves (11, 12) are independently movable.

3. Mounting device (1) according to claims 1 and 2, characterized in that

a) the quantity of the coupling means (24, 44, 24 ', 44', 24 ", 44", 73, 73 ', 73 ") for achieving an operating state with assembled device halves (11, 12) in locked closed position on each device half ( 11, 12) includes a pair of second hinge contours (24 ', 44'), and each device half (11, 12) has a pair of second hinge parts (23 ', 43') on which the respective second hinge contour (24 '; , 44 ') is provided;

b) in the closed state, when the device halves (11, 12) are joined together, all second hinge contours (24 ', 44') are in alignment with each other; and

c) in the second hinge contours (24 ', 44') of both device halves (11, 12) at least one closing element (73 ') is used as a releasable locking member, whereby both device halves (11, 12) position in the closed Po are locked against each other.

4. Mounting device (1) according to at least one of claims 1 to

3, characterized in that

a) the quantity of the coupling means (24, 44; 24'.44 ^, 24 ", 44", 73, 73 ', 73 ") for attaining an operating condition with assembled device halves (11, 12) in a partially opened, spread locking position each device half (11, 12) includes a third hinge contour (44 ") provided on one of the respective first hinge parts (43);

b) in the state of assembled device halves (11, 12) in partially opened, spread locking position, both third hinge contours (44 ") are aligned with each other;

c) in the third hinge contours (44 ") of both device halves (11, 12), a releasable retaining element (73") is inserted, whereby both device halves (11, 12) are locked in a partially open, spread position against each other; in which d) the second hinge contours (24 ', 44 ^* ) of both device halves (11, 12) remain unpopulated.

5. Mounting device (1) according to claim 4, characterized in that

a) the amount of the coupling means (24,44; 24 ', 44'; 24 ", 44 ^M; ^73.73, 73") in order to obtain an operating condition with the assembled device halves (11, 12) in a partially open, a spread locking position in each of the device halves (1 1, 12) includes a stopper member (24 ") provided on one of the respective first hinge parts (23);

b) with the widest spread of both device halves (11, 12) both abutment elements (24 ") abut one another and thereby limit a maximum opening angle between the two device halves (11, 12);

c) the stop elements (24 ") and the third hinge contours (44") are in each case aligned with one another on both device halves (11, 12); and

d) the second hinge contours (24 ', 44') of both device halves (11, 12) remain unpopulated.

6. Mounting device (1) according to at least one of claims 1 to

5, characterized in that the first hinge parts (23, 43) and the second hinge parts (23 ", 43 ') on the first device half (11) adjoin the first and second hinge parts (23, 43; 23', 43 ') the second device half (12) in their pairings are offset relative to each other as first hinge parts (23, 43) and second hinge parts (23 ", 43 ') in the extension of the axis of rotation (A) such that when the device halves (11, 12) are assembled together :

a) from the second device half (12), the pair of first hinge parts (23, 43) come to rest between the associated pair of first hinge parts (23, 43) of the first device hubs (11); and

b) from the first device half (11) the pair of second hinge parts (23 ', 43 ") comes to rest between the associated pair of second hinge parts (23', 43 ') of the second device half (12).

7. Mounting device (1) according to at least one of claims 1 to 6, characterized in that for releasable connections a total of four locking pins (73; 73 ', 73 ") are provided, namely:

a) for joining the two device halves (11, 12) to the respective first two congruent first hinge contours (24,24; 44,44), of the four locking pins two as axle elements (73) are used; or

b) for joining the two device halves (11, 12) in the locked closed position to the first hinge contours (24, 24; 44, 44) which congruently come together for two, and second hinge contours (24 ', 24', 44 ', 44'), two of the four locking pins are used as axle elements (73) and two as closing elements (73 '); or c) for joining the two device halves (11, 12) in a partially opened, spread locking position to the respectively first two congruent first hinge contours (24,24; 44,44) and third hinge contours (44 ", 44"), wherein the four locking pins two as axle elements (73) and one as a holding element (73 ") are used.

8. Mounting device (1) according to claim 7, characterized in that

a) for providing temporarily not inserted locking pin (73, 73 ', 73 "), the mounting device (1) depot forms (47), and

b) the locking pins (73, 73 ', 73 ") are formed with a latching means to prevent unintentional release from the hinge contours (24, 44; 24', 44 ', 44") or the depot forms (47); in which

c) the depot molds (47) preferably on the front side of the mounting device (1), on the side of the third hinge contours (44 "), are formed as insertion holes.

9. Mounting device (1) according to at least one of claims 1 to 8, characterized in that each of the two device halves (11, 12) comprises:

a) a fixed piston bearing (2) with hydraulic connection (20) and piston nests (22) in which hydraulic pistons (29) rest;

b) a fixed fitting (4) on which springs (76) are supported;

c) a between the piston bearing (2) and the springs (76) axially displaceable thrust ring (3), which:

ca) with activated hydraulic piston (29) against the expansion of the springs (76) from a rest position in the direction of the molding (4) for a pressing operation is movable into an end position;

cb) with inactivated hydraulic piston (29) by the expanding springs (76) by recoil from the end position to the rest position is movable or remains in the rest position; and

cc) is provided with an indicator (37), which serves for externally recognizable position indicator; and

d) bolts (7) which are anchored on the one hand on the fitting (4) and on the other hand on the piston bearing (2).

10. Mounting device (1) according to claim 9, characterized in that the bolts (7):

a) rest with their heads (7 ") in bolt holes (41) of the fitting (4);

b) axially protrude the springs (76) designed as helical springs and the thrust ring (3);

c) with their externally threaded portions (71), which are arranged at the ends diametrically to the heads (7 ') engage in internally threaded bores (21) in the piston bearing (2); and

d) for the on the bolt (7) seated compressible springs (76) and the bolt (7) seated thrust ring (3) form an axial guide.

1 1. Mounting device (1) according to at least one of claims 1 to 10, characterized in that on each of the two device halves (11, 12):

a) on the piston bearing (2) the first hinge part (23) with the first hinge contour (24) and the stop element (24 ") and the second hinge part (23 ') with the second hinge contour (24') are arranged;

b) on the fitting (4) the complementary first hinge part (43) with the first Hinge contour (44) and the third hinge contour (44 ") and the complementary second hinge part (43 ') with the second hinge contour (44') are arranged;

c) a first hinge part (23,43) in each case a second hinge part (23 ', 43 ") is diametrically opposite.

12. Mounting device (1) according to at least one of claims 1 to 1 1, characterized in that

a) for a variety of fitting kits (8) and pipe sections (9,9 ') to be compressed, namely in the range between a smallest and a larger dimension, for insertion into each of the two device halves (11, 12) respectively a first and a second Inlayhälfte (5,5 ') of the same dimension, in the form of a principal half circular rings, are provided;

b) in each of the two device halves (11, 12) the first inlay half (5) on the fitting (4) and the second inlay half (5 ') are to be fastened to the thrust ring (3);

c) at the closing position of the mounting device (1) in the two device halves (11, 12) respectively mounted first and second Inlayhälften (5,5 ') together give each the basic shape of a two-piece annular insert;

d) on the fitting (4) the insert of the two assembled first Inlayhälften (5,5) for fixed positioning of the intermediate piece (81) of the fitting kit (8) is used; and

e) on the thrust ring (3) of the insert from the two assembled second Inlayhälften (5 ', 5') for engaging behind the intermediate piece (81) aufzuschiebenden press ring (82) and thus for producing the press connection between the fitting kit (8) and a Pipe piece (9 ', 9), is determined; in which

f) for fitting kits (8) to be compressed together with pipe sections (9, 9 ') in a largest dimension:

fa) adequately dimensioned first inlay halves (5, 5) are provided for fastening on the shaped piece (4) for the purpose of fixed positioning of the intermediate piece (81), whereas for engaging behind the intermediate piece (81) directly to the push ring (3) to be pushed up during the pressing operation; and

fb) the piston bearing (2) to each other prism-shaped and axially extending support surfaces (20 ") has to receive the pipe section (9,9 ') axially centered thereon.

13. Mounting device (1) according to at least one of claims 1 to 12, characterized in that

a) for fixing the in the mounting device (1) inserted and with the fitting kit (8) to be pressed pipe section (9,9 ') and for aligning the mounting device (1) on this pipe section (9,9') each of the two device halves ( 11, 12) has a locking unit (6);

b) the locking unit (6) is formed in a first variant of an operable control arrangement (6 '); and

c) the arresting unit (6) in a second variant comprises an actuatable operating arrangement (6 ') and a clamping arrangement (6 ") which can be activated by means of the latter;

d) in the closed position of the mounting device (1) both operating arrangements (6 ') and both clamping arrangements (6 ") for diametrically pressing on the outer surface (91) of the pipe section (9,9') are determined.

14. Mounting device (1) according to claim 13, characterized in that

a) the operating arrangement (6 ') comprises:

aa) the actuator (64), preferably in the form of a rotatable handwheel, with a from the actuator (64) extending threaded spindle (65); and ab) a bearing member (63) fixed to the piston bearing (2) or integrated in the piston bearing (2), having a continuous internal threaded bore (63 ') engaged with the threaded spindle (65); in which

ac) determines the threaded spindle (65) for direct pressing against the outer surface (91) of the tubular piece (9, 9 ') or for moving the clamping arrangement (6 ") pressing against the outer surface (91) of the tubular piece (9, 9') is and b) the clamping arrangement (6 ") comprises:

ba) a U-shaped pressure piece (60), with through bolt holes (62) and with mutually prismatic, axially extending support surfaces for axially centered receiving and pressing against the pipe section s (9,9 ');

bb) spacer sleeves (68) serving as spacers for a second inlay half (5 ') screwed to the pressure piece (60); and

bc) screws (69), which in the screw holes (62) sitting through the pressure piece (60) and in each case one of the spacer sleeves (68) protrude there to engage exiting the Inlayhälfte (5 '); and

c) the unit of both interconnected device halves (11, 12) located in locked locked position, mounted on a pipe section (9, 9 ^* ) to be pressed with a fitting kit (8), in the state of unclamped locking units (6) , is movable in an arbitrary rotational position5.

15. Mounting device (1) according to at least one of claims 1 to 14, characterized in that

a) one of the two device halves (11, 12) on a with a fitting-0 kit (8) to be pressed pipe section (9.9 ") in any rotational position can be attached and fastened;

b) thereafter, the other device half (12,11) with the first positioned device half (11, 12) connect, whereby the mounting device (1) even when pressing pipe diameters to DN 100 mm5 (= 4 inches) to Ein Man-handling.