DE19711200C2 - Installation set with multi-telescope - Google Patents

Description

The invention relates to a built-in set for opening and closing from shut-off valves installed underground or in areas difficult to access systems with a key bar that is secured by a spring system and as Serves telescopic rod and is surrounded by a sleeve tube, which is also a telescope is formed and a sealing cap with the street cap and a bell and a centering and dirt washer located below the coupling sleeve the slide valve of the shut-off valve is to be connected.

When opening up residential and industrial areas, the frost limits considering fresh water pipes but also drains u. a. Pipe systems like Gas pipes laid deep in the floor. Both at the junctions of the individual houses As in other areas, it is necessary to install shut-off valves, which then must be operable from the surface of the earth after completion of the roads. Similar There are also problems with pipe systems in areas that are difficult to access are installed and where the necessary slides and actuators over a longer period Key bars should be accessible. With the help of this preferably as a telescope rod-shaped key rod, the shut-off valves can be opened and closed sen, this telescope consisting of square tube or square steel rod is laid in a sleeve tube, in order to have an influence even with longer standing times to prevent solution through the surrounding soil. In particular, it can cause corrosio come, but also that through the solidifying soil or mud a tight shell around the key bar that makes it impossible to operate. The sleeve tube is connected at the top to a sealing cap and at the bottom via the bell and a dirt disk on the slide or the actual shut-off valve. This will the entire area of the key bar from dirt, water and. Ä. kept free and a Adjustment and shut-off device that can be operated properly in the long term is guaranteed continuous In these, for example from DE-GM 295 16 158 known installation sets becomes an adaptability to the barrier supplied by different manufacturers valves thereby allowing both the key rod and the sleeve tube  can be telescoped. The key bar consists of two telescoping parts, while the sleeve tube has a thinner middle part or thinner part pipe is available on which the sealing cap and the other on the one hand, the partial tubes assigned to the bell are displaceable. The disadvantage here is that in these known installation sets only a limited telescopic ability can be used. The reason for this is the necessary stability on the one hand and on the other the necessary combination of key bar on the one hand and sleeve tube on the other. Thanks to the center tube and the partial tubes that can be moved over it, it is flawless Telescoping over longer lengths impossible because pulling out too far or always pulling off one of the two pipes that can be moved over the middle part fear. Also pulling apart the individual parts of the key bar to be feared, at least the degree of sliding apart or pulling apart cannot be checked, so there is then a risk of contact with the square the slide valve of the shut-off valve is no longer present. In such a case remains nothing else than digging out the entire installation set and the parts again to put into each other to allow further operation of the shut-off valves. On such effort is associated with considerable costs and with a high expenditure of time the. Since the water pipes are usually laid at a depth of 80 cm and the gas pipes To be arranged above and usually at a depth of 60 cm is a use one and the same installation set for both supply pipes or supply lines not possible.

The invention is therefore based on the object, one for in different Deep underground supply pipes, especially for gas and water to create pipes insertable installation set.

The object is achieved according to the invention in that the sleeve tube from more than two partial tubes are formed, each at the top and / or at the bottom are equipped with a correspondingly shaped pull-out protection and that each that of the telescopic parts of the key rod also secure against pulling out is ordered.  

With a built-in set designed in this way, it is first of all ensured that neither the key bar nor the sleeve tube parts protecting and covering it can be pulled apart so far that there is a lack of contact with the Shut-off valve or that dirt in the interior between the key bar and In nenwand of the sleeve tube can come. In this way, the sleeve tube and also the key bar can be divided more than into two sections, so that on the other hand, another pushing and pulling apart hen such an installation set is possible. It is both possible with one and the same installation set for gas and water pipes as well as one Permanently safe accessibility of the corresponding shut-off valves even over long periods Ensure periods. Especially when a road is being built the built-in set thus easily corresponds to the height of the cover be extended without the risk that the individual parts of the Key bar and also the sleeve tube lose contact with each other. This one Building set is therefore used in many areas and for a wide variety of purposes settable.

According to an expedient embodiment of the invention it is provided that the Key bar consists of square profile telescopic parts, securing against Excerpt once as a correspondingly trained, frontal center notch and center dent and once is formed as a notch and dent on the corner. This distributed and different assignment of notch and dent has the advantage of being through it a vibration caused by jerky pulling apart does not overcome this Fuse can come. Of course, it is also possible to take the appropriate security to assign only the corners of the square or polygonal profile, in general Switch off vibrations or problems caused by vibrations. With the provided here The key rod is divided into three, however, the assignment described above partial, whereby it is usually sufficient to have a central notch and a central dent respectively Allocate notch and dent to one of the flat sides or the corners. But it is conceivable also, in the case of particularly high loads, two such center notches and To provide center dents or notches and dents. It is particularly advantageous if the center notch at the upper end of the telescopic part with the smallest diameter  water and the center dent is formed at the upper end of the central telescopic part, while the notch the lower telescopic part and the dent the associated end of the middle telescope part is assigned. The lower telescopic part is with the dome sleeve equipped or connected to it in such a way that after being put over the four edge of the control valve or shut-off valve turns when turning the entire Key bar is ensured.

A uniform extension of the individual telescopic parts or an ent Talking nesting is favored by the fact that all telescopic parts spring system housed in a transverse bore is assigned. This spring system Above all, it has the task and the advantage of ensuring that the key bar is in the intermediate position specified in each case remains, in particular when the Connection with the road cap has not yet been established.

An advantageous uniform tightness of the inserted partial pipes the sleeve tube is guaranteed as well as a uniform pull-out resistance if the partial tubes of the sleeve tube as cylindrical tubes each adapted to each other Diameter are formed. The diameter of the individual partial tubes can be so be chosen so that they are only apart with a certain pull-out resistance are pulled, whereby the tightness described is advantageously also guaranteed, if there is a certain oblique pull due to unfavorable installation should. The tightness described is ensured in particular in that the Partial tubes each on the upper edge covering the adjacent tube one inwards have protruding sealing lip. This sealing lip is only through the inside projecting annular approach, which also has the advantage that even with unfavorable effects, the tightness is not caused by damage to the Sealing lip falls away or is impaired. Because of this formation of the sealing lip the pull-out resistance must be set so that the handling of the entire installation clothing is relieved.

The partial tubes of the sleeve tube must be extended when the installation set is extended be pulled apart, the entire sleeve tube then already in the ground  arranged is surrounded by the earth. But taking it off will make it easier tert that the partial pipes into one another from the bell covering the coupling sleeve are arranged so that the tube with the smallest diameter with the Sealing cap is connected. On the one hand, there is the possibility to change the scope of the To keep sleeve tube limited overall and a simple connection with the poss to achieve the smallest possible sealing cap and on the other hand when apart educate the installation set or, more specifically, the sleeve tube with the part pull the smaller diameter out of the larger diameter, whereby the surrounding earth has less influence on the pull-out resistance.

Further ahead is the pull-out protection with regard to the partial pipes been shown. Appropriate and advantageous training for this provides that the partial pipes each have an inner ring lock and corresponding to the upper edge have an outer ring lock at the bottom as a pull-out lock. This out anti-pulling device, consisting of inner ring and outer ring securing thus ensures that when reaching or shortly before reaching the end position, the outer ring of one smaller diameter tube under the inner ring or the inside ring securing of the partial pipe having a larger diameter so that pulling apart is excluded. This special training of Ausziehsi At the same time, securing ensures that the individual pipes are also separated one after the other be drawn to others, d. H. only the partial pipes with the larger diameter pulled apart before ultimately the part pipe with the smallest diameter which can be pulled out with the second smallest diameter.

A kind of snapping the pull-out protection of the neighboring or into each other You can reach the connecting pipes by attaching the inner ring lock and the Have outer ring retainers with angular support surfaces. The individual ring fuses thus move into one another - even if only slightly - and get caught then, so that accidental pulling through can be completely excluded.

To correct the installation protection, it cannot be ruled out that the Installation set must also be shortened. Theoretically, there is then the possibility  that the individual partial pipes are not pushed one inside the other, but rather that an uneven order is adhered to, so that then a partial pipe with a correspondingly much smaller diameter into that with a larger one Diameter can slip into it. Then the seal would no longer work and moisture could enter. In order to avoid this, the invention provides that an immersion safety device is assigned to at least the middle pipes. This Immersion protection prevents the individual pipes from getting too far into them can submerge the partial pipes.

Such immersion protection is expediently realized in that the Immersion protection as provided at the upper end of the partial pipe on the outer wall Locking ring is formed. As mentioned, this locking ring prevents the vehicle from being driven too deep of the partial tube with a much smaller diameter in the other partial tubes.

Another way to implement immersion protection is with of the sealing lips of at least the middle partial pipes, the insertion sequence have pretensioning. Because the preload is different, it is safe to deliver that the individual partial pipes one after the other, d. H. according to the corresponding before push the tension into each other, so that one of the thinner partial pipes is avoided.

A third possibility of immersion protection is that of the sealing lips and / or the inner ring securing the insertion sequence, different before tensioned spring elements are assigned. These spring elements achieve what the Prestressing the sealing lips, namely a targeted insertion of the individual pipes into each other so that they fit into each other according to the diameter be pushed.

The upper tube and the lower tube are usually with the Sealing cap or the bell firmly connected, so that actually turning the sleeve tube can be excluded if the key bar is turned to for example to open or close a shut-off valve. But in order to get an optimal ver  To achieve anti-rotation, the invention provides that the partial pipes with the turn the sleeve tube when actuating the key bar preventing approaches are provided. Since, as mentioned, the top and the bottom tube with the corresponding corresponding parts are firmly connected, so can the middle tubes no longer turn. This prevents the approaches mentioned, being an achievement Such approaches can be achieved in that the partial tubes alternate axially parallel running guide webs and / or corresponding guide rings with slots exhibit. It is achieved that depending on the position of the individual partial pipes otherwise a "jamming" is reached, so that these partial pipes do not conflict can twist others.

The invention is characterized in particular by the fact that an installation set is created for the supply running at different depths in the ground lines can be used, especially for gas and water pipes in the Ab stood of 20 cm or more or less arranged in the area of roads become. The corresponding installation set can be done by simply sliding into each other ben or be moved to the position that is necessary to the to connect the respective gate valve with the road cap. It is advantageous here also that the built-in set is low due to the optimal telescopability Has storage and transport dimensions. In addition, of course, is such an construction set also the different dimensions of the individual manufacturers of shut-off valves easily adaptable but just as mentioned not only with regard to the differences Chen dimensions of the shut-off valves, but also the spaced apart Supply lines. Such a built-in set is therefore highly versatile on. Of particular importance is the high level of security that such an Construction set regarding long-term safe handling, because both the sleeve tube and also the key bar against pulling out too far, against self-locking and are secured against any leaks.

Further details and advantages of the subject matter of the invention result from the following description of the accompanying drawing, in which a preferred Embodiment with the necessary details and items shown  is. Show it:

Fig. 1 is a Fitting trim in different pull-out position, partly in section,

Figure 2 shows the upper part of tube tenansicht. Of the sleeve tube in section and in Sei,

Fig. 3, the middle or second tube part of the sleeve tube in section and in side view,

Fig. 4, the lowest part of pipe in section and in side view,

Fig. 5 is an enlarged illustration of the upper end of an individual component tubes,

Fig. 6 is a perspective view of the key rod, partly in section,

Fig. 7 is a partial pipe with anti-rotation in perspective Dar position and

Fig. 8 is a partial tube with a further rotation.

Fig. 1 shows a built-in set 1 with telescoping parts of different lengths.

Such a set 1 consists of a telescopic key rod 2 and the surrounding sleeve tube 14th In the embodiment of the key rod 2 shown in FIG. 1, an upper telescopic part 3 with the key head 4 is shown, which can be inserted into a central telescopic part 5 , which in turn can be pushed back into the lower telescopic part 6 , so that the total length of the key rod 2 can be shortened or extended accordingly.

In order to ensure a uniform pulling apart and pushing together and on the other hand to fix the key rod 2 in the respective telescopic position, the individual telescopic parts 3 , 4 are each assigned a spring system 7 , 8 . These spring systems have coil springs, not shown here, which are accommodated in a transverse bore 11 and have outside pressure caps which grind on the inner wall 13 , each of the larger diameter telescopic parts 5 and 6 .

The lower telescopic part 6 in each case is to be provided with a coupling sleeve 9 for connection to the square of the shut-off valve (not shown here). The dome sleeve 9 has a locking connection 10 , which in turn is not shown in detail here, which may be, for example, a pin running through the mouth opening 12 . The coupling sleeve 9 as the lower end of the key rod 2 is surrounded by a bell 17 which forms the lower part or the lower end of the sleeve tube 14 .

The upper end of the sleeve tube 14 is designed as a sealing cap 15 , which tightly encloses the key rod 2 or the upper telescopic part 3 and ensures that moisture cannot penetrate into the sleeve tube 14 from above. Down the sleeve tube 14 or the bell 17 is sealed by a centering and dirt disk 16 , which is shaped accordingly to the respective shut-off valve or can be placed thereon.

Fig. 1 it can be seen that the sleeve pipe 14 is formed as a telescope and, accordingly, consists of successive adjusted in diameter tube sections 18, 19, 20, 21.

The partial pipes 18 and 21 are firmly connected to the sealing cap 15 or the pipe extension 35 or to the bell 17 . A suitable, flat connection is achieved via friction welding or the like.

This upper part pipe 18 is shown in FIG. 2, it being clear that this uppermost part pipe 18 has an insertion end 22 which enables insertion into the pipe extension 35 . This insertion end 22 has a correspondingly large area, so that a sealing and effective connection is ensured.

At the upper edge 23 or at the lower edge 24 of the partial tubes 18 , 19 , 20 , 21 , a pull-out protection 25 is provided, which is to prevent the interlocking and sliding partial tubes 18 , 19 , 20 , 21 being pulled apart too far. Fig. 2 and Fig. 3 show the mutually corresponding part of tubes 18, 19, wherein on the lower edge 24 of the part pipe 18 is an outer lock ring arranged or formed 27 while the upper edge 24 has the next portion of the tube 19 via an inner ring fuse 26. When pulling out the telescope or the built-in mechanism 1 according to the right-hand illustration in FIG. 1, the partial tube 18 pushed in from the lower edge 24 into the partial tube 19 with the outer ring lock 27 would hit the inner ring lock 26 and then hook. FIG. 5 shows this area in an enlarged representation, it becoming clear that an oblique support surface 28 is provided here, so that a real jamming occurs when the pull-out safety device 25 is reached.

Fig. 4 shows, by the way, the lowest partial pipe 21 , which has a connecting piece 29 which is pushed over the upper end of the bell 17 in order to then establish the connection between the two parts already mentioned. In Fig. 5 not only the described pull-out lock 25 or the inclined support surface 28 is shown, but here it is also shown that in the area of the inner ring lock 26 or the upper edge 23 a sealing lip 30 ensures that transitions are reliably covered, so that moisture cannot penetrate into the respective inner region of the partial pipes 18 , 19 , 20 , 21 . This sealing lip with about 1 mm width is sufficient to ensure the tightness mentioned in this area.

It cannot be ruled out that when using such a built-in set 1 , the built-in set from the right-hand illustration according to FIG. 1 must also be pushed back into the middle position. In order to rule out that the partial tubes 18 , 19 or 19 , 20 each having a smaller diameter are inserted too far into the partial tubes 20 , 21 having a larger diameter, an immersion protection device 31 is assigned to the central partial tubes 19 , 20 . Fig. 1 and also Fig. 3 show that this immersion protection is assigned to the upper end piece 32 of the partial pipes 19 , 20 , in the form of a snap ring 34 applied to the outer wall 33 . This locking ring 34 ensures that when inserting the partial tubes 18 , 19 , 20 , 21, for example, the partial tube 20 can only be inserted into the partial tube 21 until the locking ring lies on top of the upper edge 23 of the partial tube 21 .

The key bar 2 already mentioned, which is divided into a plurality of telescopic parts 3 , 5 , 6 , is shown in perspective in FIG. 6. It can be seen here that at least the upper telescopic part is designed as a solid rod with the key head 4 , here a square. This upper telescopic part 3 can be inserted into the central telescopic part 5 or pulled out of it as far as the fuse 37 permits. This upper fuse 37 is, as is known, achieved by means of a notch 38 and a central dent 39 , the central notch 38 being introduced into the telescopic part 3 while the central notch 39 corresponding to the central notch 38 , pressed or wrapped in the central telescopic part 5 here by a telescopic tube was. It is not difficult to see that in normal operation it is impossible for telescopic part 3 and telescopic part 5 to be spread too far apart.

Another possibility of securing 37 against being pulled out too far is shown in the lower part of FIG. 6, where it is indicated or shown that the securing 37 ′ is assigned to the corner 40 of the telescopic parts 5 and 6 which are inserted into one another. It is realized by a notch 41 or a dent 42 .

In the embodiment shown in FIG. 6, the central notch 38 is the lower end 43 of the telescopic part 3 , the central notch 39 the upper end 44 of the telescopic part 5 , the notch 41 the lower end 45 of the telescopic part 5 and the dent 42 the upper end 46 of the Telescope part 6 assigned. The special shape of the notch 41 and the dent 42 in the area of the corner 40 excludes vibration problems which may arise due to the fact that the telescopic part 3 or 5 , which is smaller or has a smaller diameter, is pulled too strongly or suddenly. Then, under certain circumstances, the central notch 38 can be pulled over the central dent 39 , which can be excluded in the arrangement in the corner area. Of course, it is also possible to assign such a notch 41 or dent 42 to the other two telescopic parts 3 , 5 .

The middle partial pipes 19 , 20 , in particular, are prevented from rotating if lugs 48 designed to prevent rotation are assigned to them. Fig. 7 shows formations axially extending guide ribs 49, wherein said visible in FIG. 8 guide rings 50 may correspond with the slots 51, 52 therewith. However, it is also conceivable that other guide rings 50 or slots 51 , 52 are provided in order to reliably prevent the partial tubes 19 , 20 or 21, which are inserted into one another, from rotating.

All of the above-mentioned features, including those that can only be taken from the drawings, alone and in combination are regarded as essential to the invention.

Claims (15)

1.Installation set for opening and closing shut-off valves under ground or in hard-to-reach areas of supply systems with a key rod ( 2 ), which is secured by a spring system ( 7 ) and serves as a telescopic rod and is surrounded by a sleeve tube ( 14 ), which is also is designed as a telescope and is to be connected to the slide valve of the shut-off valve via a sealing cap ( 15 ) with the road cap and via a bell ( 17 ) and a centering and dirt disk ( 16 ) arranged below the coupling sleeve ( 9 ), characterized in that the sleeve tube ( 14 ) of more than two partial tubes ( 18 , 19 , 20 , 21 ) is formed, each of which is equipped at the upper and / or lower edge ( 23 , 24 ) with a corresponding ge-shaped pull-out protection ( 25 ) and that each of the telescopic parts ( 3 , 5 , 6 ) of the key rod ( 2 ) is also assigned a safety device ( 37 ) against being pulled out. 2. Installation set according to claim 1, characterized in that the key rod ( 2 ) consists of square profile telescopic parts ( 3 , 5 , 6 ), the fuse ( 37 ) against pull-out once as a correspondingly formed frontal center notch ( 38 ) and center dent ( 39 ) and once as a notch ( 41 ) and dent ( 42 ) made at the corner ( 40 ). 3. Installation set according to claim 2, characterized in that the central notch ( 38 ) at the lower end ( 43 ) of the telescopic part ( 3 ) with the smallest diameter and the central dent ( 39 ) at the upper end ( 44 ) of the central telescopic part ( 5 ) while the notch ( 41 ) is assigned to the lower telescopic part ( 6 ) and the dent ( 42 ) to the lower end ( 45 ) of the central telescopic part ( 5 ). 4. Installation set according to one of the preceding claims, characterized in that all telescopic parts ( 3 , 5 , 6 ) in a transverse bore ( 11 ) housed Fe dersystem ( 7 , 8 ) is assigned. 5. Installation set according to one of the preceding claims, characterized in that the dividing tubes ( 18 , 19 , 20 , 21 ) of the sleeve tube ( 14 ) are designed as cylindrical tubes, each with a matching diameter. 6. Installation set according to one of the preceding claims, characterized in that the partial tubes ( 18 , 19 , 20 , 21 ) each have an inwardly projecting sealing lip ( 30 ) on the upper edge ( 23 ) covering the adjacent tube. 7. Installation set according to one of the preceding claims, characterized in that the partial pipes ( 18 , 19 , 20 , 21 ) from the bell ( 17 ) covering the coupling sleeve ( 9 ) are arranged from one another, so that the partial pipe ( 18 ) with the smallest Diameter is connected to the sealing cap ( 15 ). 8. Installation set according to one of the preceding claims, characterized in that the partial pipes ( 18 , 19 , 20 , 21 ) in each case correspondingly on the upper edge ( 23 ) an inner ring lock ( 26 ) and on the lower edge ( 24 ) an outer ring lock ( 27 ) as Have pull-out protection ( 25 ). 9. Installation set according to claim 8, characterized in that the inner ring retainer ( 26 ) and the outer ring retainer ( 27 ) have angled support surfaces ( 28 ). 10. Installation set according to one of the preceding claims, characterized in that at least the central partial tubes ( 19 , 20 ) is an immersion protection ( 31 ) is assigned. 11. Installation set according to claim 10, characterized in that the immersion protection ( 31 ) is designed as a locking ring ( 34 ) provided on the outer wall ( 33 ) at the upper end ( 32 ) of the partial tube ( 19 , 20 ). 12. Installation set according to claim 10, characterized in that the sealing lips ( 30 ) of at least the central partial tubes ( 19 , 20 ) have a presetting a presetting sequence. 13. Installation set according to claim 8 and claim 10, characterized in that the sealing lips ( 30 ) and / or the inner ring lock ( 26 ) are assigned the insertion sequence before giving differently preloaded spring elements. 14. Installation set according to one of the preceding claims, characterized in that the partial tubes ( 18 , 19 , 20 , 21 ) with the turning of the sleeve tube ( 14 ) when actuating the key rod ( 2 ) preventing approaches ( 48 ) are provided. 15. Installation set according to claim 14, characterized in that the partial tubes ( 18 , 19 , 20 , 21 ) have alternating axially parallel guide webs ( 49 ) and / or corresponding guide rings ( 50 ) with slots ( 51 , 52 ).