DE7630026U1 - CONNECTOR AND SEALING DEVICE FOR REPAIRING UNWANTED CAVITIES IN PREFERRED MASONRY OR CONCRETE - Google Patents

Description

Patent Attorneys · I * J ί * 'ί * '. Il 24.9.1976

Dr. Hugo Wilcken '"' '" *' · "* * ·" "

Dipl.-lng. Thomas Wilcken
Dipl.-Chem. Dr. Wolfgang runner

24 Lübeck, Breite Strasse 62-54

Applicant:. : Hans-Georg Gawlick, Rendsburger Str. 3, 2362 Wahlstedt

Connection and sealing device for repairing unwanted cavities in preferably masonry

or concrete

The invention relates to a connection and sealing device for Repair of unwanted cavities in preferably masonry or concrete, consisting of a radially flexible clamping sleeve and a rigid tubular injection body held axially and sealed therein with a check valve at its connection end.

A sealing connection device of the aforementioned type, which in connection with a device for filling wall cracks, voids in concrete and the like undesirable cavities in structures in the fields of civil engineering, including road construction is used in liquid form with water-repellent and insulating compounds, e.g. epoxy resins, consists of a metal tubular injection body with cylindrical thread sections at both ends and this body over part of its length surrounding cylindrical clamping sleeve. The clamping sleeve can be axially compressed by nuts screwed onto the threaded sections, as a result of which it can be stretched radially outward. A ball check valve is screwed into one end of the injector to which the mentioned filling device is connected. The so

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assembled connection device is with untensioned Klenunhtilse in an auxiliary hole 'e.g. in a wall, and by tightening of the nut remaining on the outside, the clamping sleeve becomes radial stretched, whereby it is strongly pressed against the wall of the auxiliary bore and thus a firm and tight anchoring by means of frictional engagement of the entire facility.

This known device has the disadvantage that it has a diameter must be made relatively large, the diameter being at least 20 to 25 mm. The device is smaller in diameter not usable, as it then does not have the ability to generate the large forces required to securely attach the To be able to apply device in the auxiliary bore with simultaneous sealing of the same. The aforementioned filling device works with a very high pressure, because 'the filling compound even in the smallest cracks and cavities must be pressed, so that the connection and sealing device is subjected to considerable forces. Next is the attachment the correspondingly large auxiliary bores in the masonry, concrete or the like cumbersome and time consuming. Furthermore, the known device consists of a relatively large number of individual parts, so that they also is correspondingly expensive to manufacture. Another disadvantage is that the device cannot be removed after the cavities have been filled, since it is firmly glued to the injected resin composition, so that plastering the attachment point is cumbersome, as initially the the nipple containing the check valve for the filling hose .. or the filling device must be knocked off or ground off.

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The object of the invention is therefore to create a connection and sealing devices of the type mentioned in the introduction, which are substantially smaller in diameter and, furthermore, simpler and cheaper can be made, with the attachment point plastered again quickly and better looking after the device has been used can.

This object is achieved in that the injection body has at least the outside on part of its length is not designed to taper conically in the direction of its injection end and with this part when it is fixed Device for generating the fixing and sealing putty with radial pressure against the flexible clamping sleeve.

According to an advantageous embodiment of the subject matter of the invention the entire drive length of the injection body is conically tapered and has the injection end of the injection body in its facing end area has a conical thread and furthermore the clamping sleeve with a conical bore for receiving the injection body provided and in the engagement area for the conical thread formed longitudinally slotted. At the connection-side end of the driving length of the injection body is a polygonal screw head designed as an attack surface for a driving tool.

The device constructed according to the invention can be substantial in diameter can be made smaller because it is constructed according to the dowel principle. The injection body has essentially the shape of a axially drilled wood screw with a polygonal head, which is inserted into a

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Longitudinally slotted, dowel-like clamping sleeve with a preferably conical Axial bore engages. By screwing in the injection body, in connection with the conical working surface of the body the clamping sleeve exerted a sufficiently large radial force with which the entire device is fixed and sealed in the auxiliary bore is attachable. The overall diameter of the device can thus be reduced to 8 to 10 mm. One such facility is above In addition, compared to the previously described device, easier and cheaper to manufacture. Furthermore, the attachment point for the proposed device can be plastered faster and better looking after injection of the filling resin, since the Injection body unscrewed or knocked out again without difficulty and the protruding part of the collet remaining in the auxiliary hole is easily removed by cutting or the like can be. The remaining hole in the wall, in the concrete, etc. can then be easily plastered.

The invention is described below with reference to one in the accompanying drawing illustrated embodiment explained in more detail. Show it:

FIG. 1 shows a device according to the invention inserted into an auxiliary bore in a concrete wall,

FIG. 2 shows an individual part of the device according to FIG. 1.

According to Figure 1, an auxiliary bore 2 is made in an only partially shown concrete wall 1, in which a dowel-like clamping sleeve

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made of flexible material, e.g. plastic, which has a radially outwardly directed collar 4, which prevents the sleeve from slipping into the auxiliary bore when it is introduced an injection body 5 prevented.

The injector body 5 made of steel consists of a shaft 6, the entire Eintreiblänge is to taper conically in the direction of and up to the injection end 7 of the body 5 _f and an advantageous diameter larger terminal end 8, which is additionally formed for example as a polygonal head, in order to be able to fasten the body 5 in the sleeve with a wrench. The shaft area facing the injection end 7 of the body 5 is provided with a conical thread 9, with which the body 5 is fastened in the clamping sleeve 3. The body also has a stepped axial bore 10 for injecting viscous sealing compound, which is advantageously provided at the connection end 8 with a thread 11 for receiving a conventional connection nipple 12, which also has a ball check valve (not shown) in a known manner.

Although the entire driving length of the shaft 6 is advantageously conical is formed, it is also possible to form a shank section adjoining the end 8 of the body 5 to be cylindrical. In further Modification, it is also possible to omit the conical thread 9, so that the conical shaft / in the manner of a wedge into the clamping sleeve can be driven.

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Figure 1 shows the fixed in the auxiliary bore 2 device according to the invention. The clamping sleeve 3 advantageously has a conical Axial bore 13 for receiving the injection body 5, and further If the sleeve is slit lengthways on its half facing away from the collar 4, so that the penetrating thread section 9 of the shaft 6 presses the sleeve apart radially and its outer surface sealing and so that the entire device presses firmly against the wall of the auxiliary bore 2 with great force. The unslotted length

14 of the sleeve 3 lies against the thread-free and Konsichen section

15 of the shaft 6 and thereby also causes a seal and fixing the device according to the invention in the auxiliary bore.

A hose of an injection device is attached to the connection nipple 12 connected or the device attached directly to the viscous sealing compound, e.g. epoxy resin, through the previously described Facility through safely with high pressure in cracks, blowholes or other undesirable cavities in masonry, concrete and others To be able to inject building materials and structures that have been damaged by the formation of cracks and cavities.

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Claims (3)

Patent attorney · »JJ1] ·" «·". Dr. Hugo Wlioken Dipl.-Ιπβ. Thomaa WiIoUn 9/24/1976 Dipl.-Chnm. De. VVolißang Laufer ii> t Lubuu ^ Breit »StrnHo 6Ϊ-34 Applicant: Hans-Georg Gawlick, Rendsburger Str. 3, 2362 Wahlstedt Claims 1. Connection and sealing device for the repair of undesirable Cavities in preferably masonry> or concrete, consisting from a radially flexible clamping sleeve and a rigid, tubular injection body held therein in an axially sealed manner with a check valve at its connection end, characterized in that that the injection body (5) on the outside at least over part of its length in the direction of its injection end (7) is conically tapered and with this part rests against the flexible clamping sleeve (3) with a fixed device for generating the fixing and sealing force with radial pressure. 2. Device according to claim 1, characterized in that the entire Drive length of the injection body (5) is conically tapered and in its the injection end (7) of the injection body facing area has a conical thread (9) and that the clamping sleeve (3) with a conical bore (13) provided for receiving the injection body and in the engagement area is longitudinally slotted for the conical thread (16). 3. Device according to claims 1 and 2, characterized in that that at the connection-side end of the driving length of the injection body (5) a polygonal screw head (8) as an engagement surface 7630026 03.1177 * · F · · · ι) ι »iiii • · · tilt • · »II · t I • t ti I I I I I I II ι is designed for a driving tool. 7630026 03.1177