EP0826834A2 - Manhole frame - Google Patents

Abstract

The cover has an insert (4) with a top flange for a lid (1), and a ring-shaped part (6), fastened to elements (5) on the lid. The flange has the same shape as the top shaft end. The tubular insert projects into the shaft (2). For height-adjustment, the cover part is fastened to the elements on the lid at the correct height, and is then placed on the top shaft end. The elements on the lid are formed by mainly horizontal ribs, and correspondingly shaped grooves (7) on the ring-shaped part engage over the ribs.

Description

The invention relates to a height-adjustable shaft closure. especially Sewer shaft termination, according to the preamble of claim 1.

Usually, shafts that provide access to the underlying channels or. offer similar facilities, formed by concrete rings. where the top ring is one Offers support for the manhole cover or manhole cover. The height of the lid is determined by Intermediate rings made of concrete adapted to the road surface level. The intermediate rings are only in rough gradations available. which is why only a rough adjustment is possible. Resulting too high or too low manhole covers are on roads for Drivers are annoying and can e.g. even an obstacle for single-track vehicles and thus being dangerous. If the road surface is renewed, it must be readjusted the height of the manhole cover is required. This is a relatively labor intensive process.

For example, CH 627 505 A5 describes a height-adjustable shaft end, whose mechanism consists of two concentric rings, the inner ring of which Duct cover picks up and rests on the outer ring. Between the outside and inner ring is helically arranged a toothing, which is a gradual Permits height adjustment of the manhole cover. This construction can be used in existing Manhole closures can only be used with great effort. Beyond that is only a relatively small adjustment range possible. US 3,629,981 A describes one height-adjustable manhole cover, consisting of a cylindrical element attached to the has a thread-like groove on the inside and a cylindrical sleeve with a thread-like structure on the outside complementary to the groove. At the top the sleeve has a flange for receiving the manhole cover. By rotating the The height of the shaft end can be varied. Sealing rings prevent this Penetration of dirt into the thread causes the arrangement to be elastically supported and prevent unwanted twisting. The handling for height adjustment is relatively difficult since the sleeve. which can have a relatively large mass, twisted must become. Other height-adjustable shaft closures are known from US 1 712 267 A AT 380 044 B and FR 2 523 615 A are known. These constructions are also not simply attachable to existing shaft systems.

The object of the invention is to provide measures which a Height adjustment of a manhole cover, manhole cover or the like in a simple and inexpensive manner infinitely or with a small step height while avoiding the disadvantages mentioned above enable. The measures according to the invention are intended for both existing and new shaft closures may be applicable.

The object of the invention is achieved by the features of the characterizing part of claim 1. that the flange-like extension of the insert has the same shape as the upper end of the shaft, the construction can be applied to existing shaft ends using the original shaft or duct cover. It is only necessary to _" interpose" the insert and the or each component between the manhole cover and the shaft. The present invention can thus be used in a simple manner for existing shaft systems. By protruding the insert into the shaft, a higher adjustment range can be achieved compared to known systems. The or each component that can be attached to the structures on the insert simplifies handling when adjusting the height of the shaft end. The structures on the insert and the corresponding shapes on the or each component can have different shapes. Sawtooth-shaped bulges and corresponding grooves on the or each component can be provided on the insert. Holes on the insert and bolt-shaped extensions on the or each component are also conceivable. with the help of which the or each component can be fixed to the insert at the desired height. The height is adjusted by lifting the insert out of the shaft, which or each component is attached to the insert at a corresponding height, and then lowering the insert with the or each component back into the shaft. There is usually a recess at the top of the shaft. on which the or each component rests securely and non-slip. The insert is thus held at a height which is defined by the attachment of the or each component to the structures on the insert. The step height is determined by the spacing of the structures in the vertical direction. In contrast to known systems for height adjustment of manhole covers, the system according to the invention can also be applied to manhole covers with, for example, a rectangular or square cross section. For the cheapest possible production, the insert and each component are preferably made of cast iron. however, the use of other suitable materials is also possible.

Advantageously, the insert according to the invention is essentially tubular, so that a Access to the shaft or a free drain of e.g. Allow sewage in the sewer becomes.

Existing shafts are usually cylindrical, which is why the use according to the invention ideally is also essentially cylindrical. Furthermore, result from the cylindrical shape further advantages in use. which mentioned below will.

In the case of a cylindrical insert, according to a further feature, the Invention of the or each component designed in a ring. In the case of a one-piece component this completely encloses the insert and therefore offers optimal support. A ring-shaped Component can with appropriate design of the structures in use and the corresponding shapes on the component can be adjusted by rotation.

The structures are advantageously composed of a plurality of ones which run essentially horizontally Bulges and the formations on the or each component by a corresponding shaped groove formed. This construction variant is light and therefore inexpensive to manufacture.

To adjust the height of the manhole or manhole cover in very fine increments enable, the vertical distances of the essentially horizontal Structures between 1 mm and 10 mm, preferably 5 mm. This can be a legal Regulation, which provides an adjustability of less than 5 mm, must be met.

A stepless height adjustment can be achieved. that the structures on one cylindrical insert are formed by an external thread. Thus, by twisting of or each component can be adjusted in height.

Accordingly, the or each component is through a ring with an external thread appropriate internal thread. So the ring can be on the desired height on the insert rotated and this is inserted into the shaft. By Rotation of the ring relative to the insert can change the height of the manhole cover can be varied.

If the ring-shaped component by two ring halves with a shape on their Inside is formed in the form of a groove corresponding to the external thread of the insert, the placement of the component on the insert can be facilitated, since this does not come from below must be screwed onto the insert, but immediately to the correct height from the outside can be put on. The insert with the component is placed in the shaft used. is due to the existing recess at the top of the shaft of the component or the components are fixed and keep the insert in the correct position. With a component in The shape of a continuous ring is also used for smooth upper shaft ends possible. since the ring cannot slip sideways.

According to a further feature of the invention, means, for example plug pins or Wedges. provided which the or each annular component in front of the insert Secure twisting. These offer certainty that the height of the manhole cover, sewer cover or Like. Is not changed by unwanted rotation of the insert.

By arranging a sealing element, preferably a sealing ring. out elastic material between the or each component and the upper shaft end, can Noise and vibrations, e.g. occur when a vehicle over the shaft or Manhole cover moves. be dampened.

With newly constructed manhole covers, it is advantageous if the manhole or Manhole cover and the insert are made in one piece. The production can e.g. in a casting process.

A support ring or the like is advantageously around the upper end of the insert and between the insert and the support ring or the like. If necessary, a wedge ring or the like is arranged. Of the Support ring prevents bulk goods or asphalt from sticking to the structures on the insert or damage and thus prevent height adjustment. The insert can be used with the wedge ring are wedged with the support ring and rotation is prevented. Of course it is Shape of the support and wedge ring is not limited to the ring shape but can also be a other shape of the shaft cross section can be adapted.

The invention is based on a preferred embodiment with reference to the accompanying drawing explained.

Fig. 1

einen Kanalschacht mit dem erfindungsgemäßen höhenverstellbaren Kanaldeckel in perspektivischer Schnittdarstellung,

Fig. 2

eine Seitenansicht einer geänderten Auführungsvariante im Querschnitt.

Fig. 3

das Detail A aus Fig. 2 in größerem Maßstab. und

Fig. 4a und 4b

eine Konstruktionsvariante zur Einstellung der Neigung des Kanaldeckels in zwei verschiedenen Positionen.

Show

Fig. 1

a manhole with the height-adjustable manhole cover according to the invention in a perspective sectional view,

Fig. 2

a side view of a modified performance variant in cross section.

Fig. 3

the detail A from Fig. 2 on a larger scale. and

4a and 4b

a design variant for adjusting the inclination of the manhole cover in two different positions.

1 includes a manhole cover 1 or the like, which is normally placed on a pipe or the like forming shaft 2. The pipe, which forms the shaft wall 3 is usually made of concrete. At the top of the Pipe is usually a slightly conical recess 9 into which the corresponding Shaped manhole or manhole cover 1 or the like can be used. Over the shaft 2 e.g. an access to the underlying sewer or cable duct or the like. enables or drains rainwater into the sewer. According to the invention Height adjustment of the manhole cover 1 below it protrudes into the shaft 2 Insert 4 provided. In the illustrated embodiment, this is cylindrical. For Height adjustment of the manhole cover 1 or the like is a protruding into the manhole Insert 4 provided. In the example shown, this insert 4 corresponds to the cylindrical shaft 2 is also cylindrical. But there are also others Forming possible, the insert 4 is advantageously tubular, so that a Access to the shaft 2 or a drain of the waste water into the channel through this is made possible. According to the invention, the insert 4 has its shaft wall 3 facing side structures 5. In principle, these structures 5 can have any shape to have. They have the task of attaching one or more components 6 to the insert 4, whereby the height of the manhole cover 1 is set. The is particularly advantageous Formation of the structures in the form of an external thread on the insert 4. This allows in combination with an annular component 6 with an internal thread 7, accordingly the external thread 5 on the insert 4, a continuous adjustment of the height of the shaft or Duct cover 1. There are also other designs of the structures 5, such as sawtooth-shaped bulges or the like, or holes are conceivable. To dampen noise and Vibrations can occur between the component 6 and the upper end of the shaft 2 forming tube or the like. A sealing element. preferably a sealing ring 8 be arranged elastic material. The component 6 is screwed onto the insert 4 and then this insert with the screwed-on annular component 6 into the shaft used. until the component 6 at the top of the tube or a possible recess lies on. By simply rotating the annular component 6 relative to the cylindrical Insert 4, the manhole cover 1 can be continuously lowered or raised. After this The insert 4 with the annular component 6 can counteract the desired height Rotation are secured. In the case of a recess at the top of the shaft, this is not necessary because by pressing component 6 onto the wall of the pipe Twisting is prevented. With new manhole closures, the one according to the invention Insert 4 be made in one piece with the manhole cover 1.

According to a variant of the invention, the annular component 6 can also be in two halves be shared. This allows the two parts to the side at the desired height External thread 5 of the cylindrical insert 4 are attached and do not have to below by turning to the appropriate height. This makes it easier Application and thus saves time and money. Of course, in the case of a divided ring 6 instead of the external thread 5 also arranged one above the other Bulges. such as. sawtooth-shaped rings can be provided. In such a case the height adjustment of the manhole cover 1 or the like is not infinitely variable but with a minimal one Step height according to the vertical distance of the bulges or sawtooth Wrestling possible. In such a case, the insert 4 does not necessarily have to be cylindrical be. because in this case the height cannot be adjusted by turning the insert 4 compared to component 6, but by vertically displacing component 6 on the Outer wall of the insert 4.

Fig. 2 shows a side view of a slightly modified performance variant in cross section. The shaft is formed by a pipe. The insert 4. which protrudes into the shaft is held by the ring 6 at the appropriate height. In a recess at the top of the insert 4, the manhole cover is used. The difference to that shown in Fig. 1 Construction is there. that above the tube forming the shaft 2 or the like Use a support ring 10 is arranged. which the insert 4 or which on the insert 4 structures 5 in front of bulk material, e.g. Protect sand, earth or asphalt and one guaranteed safe function.

3 shows this support ring 10 on an enlarged scale. Naturally is also one for manhole covers and manhole covers with a different cross-section correspondingly different shape of the support element is conceivable. The wedge ring 11, which between the support ring 10 and the insert 4 can be pressed in, serves to insert the 4 in front to protect against unwanted twisting. Here too there are variants in the form of individual ones Wedge pieces or other means that prevent twisting are of course conceivable.

4a and 4b schematically illustrate a construction variant for setting the Inclination of the manhole and manhole cover in two different positions. Here is the Component 6 in a manner known per se by one inclined to the horizontal Formed in the direction of the divided ring, the ring parts 6 ', 6 "being rotatable relative to one another. In Fig. 4a, the two ring parts 6 ', 6' 'are in a position in which the upper End face of the upper ring 6 'forms a horizontal surface. 4b shows the maximum Inclination caused by a rotation of the ring part 6 'with respect to the ring part 6 "of 180 ° is achieved. The formations (7, not shown) for attaching the insert are included to be provided on the upper ring part 6 '. So that the use due to the inclined position does not match the lower ring part 6 "collides. At best, a corresponding design of this lower Ring part 6 '' necessary. This can compensate for uneven floors or slopes. which occur in particular in channels serving as drains. Of course, there are only slight inclinations of the insert and thus the shaft or Manhole cover possible. otherwise the insert would touch the shaft wall.

The illustrations essentially show only one possible variant of the Invention. Changes are possible within the scope of the claims. So it can Invention also for manhole covers with a different cross-section, e.g. rectangular or square cross section. It could be a stake accordingly the cross section of the shaft with structures in the form of bulges or holes. so that a correspondingly shaped component can be placed. But it is also that Use of a cylindrical insert with an external thread as a conceivable structure which is a component with an outside rectangular or square shape corresponding to the Shaft and round shape on the inside with an internal thread or a groove or the like. according to the external thread of the insert. This means that even with a shaft rectangular or square cross section of the manhole cover by turning the The height of the insert can be adjusted continuously.

Claims (13)

Height-adjustable shaft end, in particular sewer shaft end, with a Insert (4), on its upper side a flange-like extension to accommodate a Manhole cover or duct cover (1) or the like, and the structures (5) on its outer wall has, as well as with at least one component (6) for attachment to the structures (5) is formed with correspondingly corresponding formations (7), thereby characterized in that the flange-like extension of the insert (4) has the same shape as the upper end of the shaft has that the insert (4) projects into the shaft (2) and that for Height adjustment of the manhole cover, sewer cover (1) or the like. Or each component (6) can be attached to the structures (5) on the insert (4) at the appropriate height and the or each component (6) can be placed on the upper end of the shaft. Manhole cover according to claim 1, characterized in that the insert (4) in the is essentially tubular. Manhole cover according to claim 1 or 2, characterized in that the insert (4) is substantially cylindrical. Manhole cover according to claim 3, characterized in that the or each component (6) has a substantially annular shape. Shaft closure according to claims 1 to 4, characterized in that the Structures (5) through several, essentially horizontal bulges and the formations (7) on the or each component (6) by one or more appropriately shaped groove (s) or the like. is (are) formed. Manhole cover according to claim 5, characterized in that the vertical distances the essentially horizontal structures (5) between 1 mm and 10 mm, preferably be 5 mm. Manhole cover according to claims 4 to 6, characterized in that the Structures (5) on the insert (4) are formed by an external thread. Manhole cover according to claim 7, characterized. that the or each component (6) by a ring with a thread corresponding to the external thread of the insert (4) Internal thread is formed. Manhole cover according to claim 7, characterized in that the or each component (6) by two ring halves with a shape (7) on the inside in the form of a groove corresponding to the external thread of the insert (4) is formed. Shaft closure according to claim 8 or 9, characterized in that means for example plug pins or wedges are provided, which the or each Secure the ring-shaped component (6) against twisting against the insert (4). Manhole cover according to one of claims 1 to 10, characterized in that between the or each component (6) and the upper shaft end Sealing element, preferably a sealing ring (8), made of elastic material is arranged. Manhole cover according to one of claims 1 to 11, characterized in that the Manhole cover or duct cover (1) and the insert (4) are in one piece. Manhole cover according to one of claims 3 to 12, characterized in that around the upper end of the insert (4) is a support ring (10) or the like and between the insert (4) and the support ring (10) or the like. At most a wedge ring (11) or the like is arranged.

Images