WO2014015855A2

WO2014015855A2 - Insertion tool

Info

Publication number: WO2014015855A2
Application number: PCT/DE2013/100251
Authority: WO
Inventors: Matthias Klug; Peter Schenk; Mark Fischer
Original assignee: Dätwyler Sealing Technologies Deutschland Gmbh
Priority date: 2012-07-23
Filing date: 2013-07-08
Publication date: 2014-01-30
Also published as: WO2014015855A3; DE202012102753U1

Abstract

The invention relates to an insertion tool for inserting a string-shaped emergency seal into a rear groove of a strand-shaped sealing profile for shaft and tunnel constructions. The aim of the invention is to facilitate the insertion of an auxiliary or emergency seal into a groove of a sealing profile. In order to achieve said aim the invention provides an insertion tool (1) for inserting a string-shaped emergency seal (16) into a rear groove (15) of a strand-shaped sealing profile (14) for shaft and tunnel constructions, comprising a) a tube (2) for receiving the emergency seal (16), the tube comprising a leading end (3) having a front opening (17) and a rear end (4) having a rear opening (18) and b) a projection (5) arranged in the region of the leading end (3) at the outer peripheral surface of the tube (2), wherein the projection has on the face thereof remote from the tube a head (6) for engaging in the rear groove (15) with at least one sliding surface (7) or roll.

Description

Puller

The invention relates to a Einziehwerkug for drawing a cord-shaped emergency seal in a back groove of a strand-shaped sealing profile for shaft and tunnel structures.

Manhole and tunnel structures are regularly composed of individual monolithic prefabricated components (Tubbingen), between which contact joints are present, which are sealed with suitable seals, for example, an intrusion of

surrounding medium (e.g., water). There are also seals

Use having a Rückutut, in which an auxiliary or emergency seal can be included, for example, a seal made of a material that swells when in contact with liquid. Such a seal is known for example from WO 96/23958 or EP 1165937 Bl.

Retractable tools are known in principle. In DD 205641, for example, a

Tool for inserting sealing profiles made of elastic material in a groove of much stiffer material described. However, the tool is relatively complicated and not suitable for inserting an emergency seal in the Rückennut a sealing profile.

The object of the present invention is to facilitate the insertion of an auxiliary or emergency seal in a groove of a sealing profile.

The object is achieved by the subject matter of claim 1. Appropriate

Embodiments of the invention are specified in the subclaims.

The invention provides a retracting tool for retracting a cord-shaped emergency seal into a spine of a string-shaped gasket for manholes and tunnels comprising a) a pipe for receiving the emergency gasket having a front end having a front opening and a rear end having a rear opening and b) a arranged in the region of the front end on the outer peripheral surface of the tube Projection, wherein the projection on its side facing away from the tube has a head for engagement in the Rückutut with at least one sliding surface or roller.

The insertion tool according to the invention facilitates the insertion of a cord-shaped auxiliary or emergency seal in the rear groove of a strand-shaped sealing profile and thus makes it possible to equip a corresponding sealing profile easier, faster and thus more cost-effective with an auxiliary or emergency seal.

Under an "auxiliary or emergency seal", which is also referred to as "emergency seal" here, a seal is understood here, which is inserted into a recess of a sealing profile, is dimensioned correspondingly smaller than the sealing profile, and exerts an auxiliary or emergency function , For example, it may be a seal which consists of a swelling on contact with liquid material. In manhole and tunnel structures an additional sealing function can be achieved in this way in the event that the mediated by the adjacent sealing profiles normal sealing function is insufficient and outside fluid passes between the sealing profiles, for example, in a displacement of the finished parts. Another example is a gasket that has different sliding properties than the gasket profile.

A "back groove" is understood to mean a recess in the back side of a sealing profile, the back side being the side which is later brought into contact with a corresponding sealing profile of another prefabricated part, for example a concrete bow, or the side of a sealing profile opposite the base side The base side of a weatherstrip is the side facing the precast part into which the gasket is inserted or integrated.

Sealing profile and emergency seal are usually made of elastomeric material. Examples of elastomeric materials are natural rubber (NR), styrene-butadiene rubber (SBR), butyl rubber (HR), ethylene-propylene rubber (EPDM), butadiene-acrylonitrile rubber (NBR), hydrogenated acrylonitrile rubber (HNBR), chloroprene rubber (CR), chlorosulfonated polyethylene (CSM), polyacrylate rubber (ACM), polyurethane rubber (PU),

Silicone rubber (Q), fluorosilicone rubber (MFQ) and fluororubber (FPM). Also Mixtures of elastomers, for example those mentioned above, are possible. A material for an emergency seal is described for example in EP 1165937 Bl.

The projection has a head that is configured to be inserted into the rear groove of the weatherstrip. The head of the projection is equipped with at least one sliding surface or roller. The sliding surface may be coated to improve lubricity, e.g. with a smooth plastic, e.g. Polytetrafluoroethylene (PTFE). With the help of the sliding surface or roller, the insertion tool can be guided in a simple manner in the longitudinal direction along the sprocket groove. The emergency seal is guided from the rear opening of the pipe through the pipe to the front opening and into the

Rear groove inserted. The sliding surface or roller can rest on the floor or the flanks of the Rückennut. The provision of a sliding surface is preferred over the roller.

The tube may be closed except for the front opening and the rear opening. The tube may also have a lateral opening, for example in the form of a slot on the side facing away from the projection, which may extend in the longitudinal direction over a part or the entire length. For example, the pipe in the rear of the

Pulling tool upwards, ie to the side facing away from the projection side, be open, so that it is designed channel-shaped in this area, whereby the insertion of the emergency seal can be facilitated. The tube is preferably in one piece, but may also consist of several parts, for example, two half-shells. For example, in an embodiment in which the rear portion of the tube is open at the top, the upper portion of the tube may be integrated into a cover configured as a separate portion which closes the tube after insertion of the emergency seal. The cover may for example be hingedly hinged to the Einziehwerkzeug. The tube is preferably substantially circular in cross-section, but may also have other cross-sectional shapes, such as square, elliptical, polygonal, etc. The shape and dimensions of the tube are preferably adapted to the shape and dimensions of the emergency seal to be retracted. The tube is preferably made of metal, but may also be made of plastic. In a preferred embodiment of the invention Einziehwerkzeugs the at least one sliding surface is inclined to the front opening and lies in a plane which forms an acute angle α with the central longitudinal axis of the tube or a horizontal axis enclosing the central longitudinal axis of the tube. As a result, the insertion tool can be conveniently held in an angled position, while the sliding surface in the

Essentially horizontal, which facilitates handling. The angle α is at least 10 °, preferably at least 15 °, more preferably at least 20 °, more preferably 20-45 °, 20-40 °, 20-30 °, 22-28 ° or 24-26 ° and more preferably about 25 °.

In a particularly preferred embodiment are in the inventive

Einziehwerkzeug two or more Gleitfiächen provided, wherein the sliding surfaces are preferably all in succession along the central longitudinal axis of the tube in the above-mentioned plane. In this way, a plurality of successive sliding surfaces is provided, which are inclined in the same way towards the front opening. All or part of the sliding surfaces may be coated with a lubricious material. It is particularly preferred if the projection between the successive sliding surfaces has a step or step, i. a lower height in the radial direction to the sliding surfaces, has. This not only provides a good tilt protection with relatively low sliding resistance, but also facilitates the use of e.g. at frame corners of tubing seals.

The projection may have various shapes, for example, in longitudinal section have a generally conical, triangular or trapezoidal contour. In this case, the extension of the projection increases radially outward toward the rear end along the central longitudinal axis of the tube in general. However, the lead can also be an im

Longitudinal section substantially circular-section-shaped or ellipse-shaped, for example, have a circular-segment-shaped contour. In this case, the rounded portion forms the sliding surface and the above-mentioned plane is the plane in which the tangent is at the rounded portion in the contact area with the groove bottom. The projection may for example also be divided in the longitudinal direction. For example, two mutually spaced wings spaced parallel to one another may be provided. In a particularly preferred embodiment of the invention Einziehwerkzeugs the open front end of the tube is cut off obliquely, so that the projection

the remote part of the shell of the tube extends axially further than the projection facing the part of the shell of the tube, wherein the front opening is oriented towards the projection and lies in a plane which is offset in the above-mentioned plane or parallel to the rear end , In this way, an enlarged front opening is created and the jacket area located above the opening provides additional guidance.

Preferably, in the pull-in tool according to the invention, a peripheral extension forming a handle is provided in the region of the rear end. The perimeter extension may be integral with or separate from the tube. The extent extension can for example consist of metal and / or wood and / or plastic. The

Circumferential enlargement may, for example, have a round, elliptical, square or polygonal contour. In addition, the peripheral extension can also be profiled and / or coated on its surface.

The projection may be formed integrally with the tube. But it can also be provided as a separate part and connected to the pipe in a suitable manner, for example by means of welding, screwing, gluing, clipping or the like. The projection is preferably made of metal, but may also consist of other materials, for example of plastic.

Preferably, the projection does not extend over the outer jacket of the pipe, at least in the area of the head when viewed from above, on the sliding surface (s) in the direction transverse to the central longitudinal axis of the pipe. Thus, the projection is preferably at most as wide as the outer diameter of the tube as a whole or at least in the region of the head.

The insertion tool according to the invention can be equipped with an integrated cutting device for cutting off the emergency seal and / or a discharge unit for the emergency seal. The invention will be explained in more detail below with reference to embodiments and the attached figures purely for illustrative purposes. It shows:

Figure 1 is a schematic representation of a preferred embodiment of a

Pulling tool according to the invention. FIG. 1 A: longitudinal section through the insertion tool in the region of the section line X. FIG. 1B: top view of the rear end of the insertion tool. Figure IC: top view of the bottom (projection side) of the Einziehwerkzeugs.

Figure 2 is a schematic representation of the application of the drawing tool of Figure 1. Figure 2A: side view. FIG. 2B: Sealing profile in cross section.

Figures 3 and 4 are schematic representations of further preferred embodiments of the invention Einziehwerkzeugs.

FIG. 1 shows schematically views of an embodiment of the invention

Pulling Tool 1. Figure 1A shows a longitudinal section through the drawing tool 1 of the section line X (see Fig. 1B), Fig. 1B shows a plan view of the rear end 4 of

Einziehwerkzeugs 1, Figure IC is a plan view of the Einziehwerkzeug 1 from below, ie from the side of the projection 5 from. The insertion tool 1 comprises a here in cross-section circular tube 2 with a central longitudinal axis 10 and a cavity 12. The tube 2 has at the front end 3, a front opening 17 and the rear end 4, a rear opening 18, but otherwise closed in the embodiment shown here , In the region of the rear end 4, the tube has a hexagonal peripheral extension 11 here, which acts as a handle. In the region of the front end 3, a projection 5 is provided on the outer peripheral surface of the tube 2, which here has a generally trapezoidal contour in longitudinal section. The projection 5 is fixed with its foot 8 to the tube 2, here by welding. As viewed radially from the center longitudinal axis 10 of the tube 2, the projection 5 has a head 6. The head 6 here has two in the direction of the rear end 4 along the central longitudinal axis 10 successively arranged sliding surfaces 7a and 7b, which are inclined to the front opening 17 back. Between the sliding surfaces 7a and 7b, the height of the projection 5, ie the extension in the direction of sliding surfaces 7a, 7b decreases, so that a step 20 is formed. The inclination angle, ie the angle between the central longitudinal axis 10 and a horizontal plane passing through the central longitudinal axis 10 and the plane 9 drawn through the sliding surfaces 7a and 7b is the same for both sliding surfaces 7a, 7b and amounts to approximately 25 ° here. The tube 2 is cut off at an angle, so that the top, ie from

Projection 5 facing away from lateral surface of the tube 2 further protrudes than the lower

Lateral surface. The opening 17 is thereby directed downwards and appears in plan view (see Figure IC) oval. The plane 13 through the edges of the opening 17, or by the farthest from the rear end 4 and the closest to the rear end 4 edge of the tube 2 is also inclined at an angle α relative to the central longitudinal axis 10 and extends parallel to the plane 9th ., By this offset is in use an advantageous spacing of the opening 17 from the bottom 19 of the Rückutut 15 of

Sealing profile 14 reaches what facilitates the insertion and avoidance of damage to an emergency seal 16 by the Einziehwerkzeug 1.

As can be seen in Fig. 1B and Fig. 1C, the width of the protrusion 5 corresponds to, i. the projection 5 in the direction transverse to the central longitudinal axis 10, in the region of the foot 8 about the outer diameter of the tube 2. The projection 5 runs in cross-section (see Figure 1B) but slightly conically in the radial direction, so that the projection 5 in Area of the head 6 has a smaller width.

FIG. 2 shows the embodiment of the invention shown in FIG

Pulling tool in use. Shown is the insertion of a cord-shaped emergency seal 16 in the rear groove 15 of a strand-shaped sealing profile 14, here a sealing profile 14 for Betontübbinge. FIG. 2A shows a side view, in FIG. 2B a cross section through the sealing profile 14. The emergency seal 16 is inserted into the rear opening 18 of the

Einziehwerkzeugs 1 introduced and inserted through the tube 2 and the front opening 17 in the Rückutut. The insertion tool 1 engages in the region of the head 6 of the

Projection 5 in the rear groove 15 of the sealing profile 14, wherein the sliding surfaces 7a, 7b are substantially parallel to the bottom 19 of the rear groove 15 of the sealing profile 14. By pulling the Einziehwerkzeugs 1 in the direction of arrow, the emergency seal 16

relatively simple manner fed into the Rückutut 15. In the range of

Frame corners (not shown here), the insertion tool can be pulled to level 20 and then be pulled around the frame corner, without the head 6 with its sliding surfaces 7a, 7b must leave the back groove 15.

FIGS. 3 and 4 show further embodiments of the invention

Pulling-in tool 1. FIG. 3 shows a pull-in tool 1 in which the projection 5 has the contour of an ellipse segment in longitudinal section. In addition, in this embodiment, the obliquely cut front end 3 of the tube 2 is slightly rounded. Figure 4 shows an embodiment of the Einziehwerkzeugs 1 according to the invention, in which the upper part of the shell of the tube 2 is removed in the region of the peripheral extension 11, so that the tube 2 is open in this area upwards. In the lower half-shell part of the tube 2, the emergency seal 16 can be easily inserted from above in this area. In the embodiment shown here, the removed part of the tubular jacket is designed together with the corresponding peripheral extension 11 as a cover which is articulated via a hinge 21 to the tube 2, so that the Einziehwerkzeug 1 after inserting the emergency seal 16 can be closed again. In addition, a recess is provided in the upper jacket region of the tube 2 located at the front end 3, so that a window 22 is formed, through which the emergency seal 19 is visible in the cavity of the tube 2. This allows optical control during the loading process.

Claims

PATENT CLAIMS

1. pulling tool for drawing a cord-shaped emergency seal (16) in one

Rear groove (15) of a rope-shaped sealing profile (14) for shaft and tunnel constructions, comprising a) a pipe (2) for receiving the emergency seal (16) with a front end (3) having a front opening (17) and a rear opening (3). 18)

Rear end (4) and b) in the region of the front end (3) on the outer peripheral surface of the tube (2) arranged projection (5), wherein the projection (5) on its side facing away from the tube (2) has a head (6) for engagement in the rear groove (15) with at least one sliding surface (7) or roller.

2. Pulling tool according to claim 1, characterized in that the at least one sliding surface (7) to the front opening (17) is inclined and in a plane (9) with the central longitudinal axis (10) of the tube (2) has an acute angle α forms.

3. Pulling tool according to claim 2, characterized in that the angle α at least 10 °, preferably at least 15 °, more preferably at least 20 °, more preferably 20-45 °, 20-40 °, 20-30 °, 22-28 ° or 24-26 ° and more preferably about 25 °.

4. Pulling tool according to one of claims 2 or 3, characterized in that two or more sliding surfaces (7) are provided and all sliding surfaces lie in the plane (9).

5. Pulling tool according to one of the preceding claims, characterized in that the projection (5) in longitudinal section a generally circular-section-shaped,

elliptical, conical, triangular or trapezoidal contour.

6. Pulling tool according to one of claims 2 to 5, characterized in that the open front end (3) of the tube (2) is cut off obliquely, so that the projection (5) facing away from the jacket part of the tube (2) continues axially extends as the projection (5) facing part of the shell of the tube (2), wherein the front opening (17) for Projection (5) is oriented and lies in a plane (13) which is offset in the plane (9) or parallel to the rear end (4).

7. Pulling tool according to one of the preceding claims, characterized in that in the region of the rear end (4) forming a handle circumferential extension (11) is provided.

8. Pulling tool according to one of the preceding claims, characterized in that the projection (5) is formed integrally with the tube (2).

9. Pulling tool according to one of the preceding claims, characterized in that the projection (5) at least in the region of the head (8) in plan view of the sliding surface (s) (7) in the direction transverse to the central longitudinal axis (10) not over the outer Jacket of the tube (2) extends.