DE1233810B - Shaft bell - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

E21d

German AI .: 5c- 5/08

Number: 1233 810

File number: B 62246 VI a / 5 c

Filing date: April 22, 1961

Opened on: February 9, 1967

The invention relates to a shaft bell with an upper, arranged parallel to the shaft rings, radially widened end frame, which is distributed with its underside over its circumference arranged multi-part arcuate expansion segments is supported and connected to them, wherein at least one of the outermost supports is formed by a semicircle and the base points all segments are arranged at a distance from the shaft cross-section.

In the known design of the shaft bell, a special end frame is provided, the one has a lattice girder-like design and is composed of four roughly triangular corner pieces, such that the carrier has a square shape on the outside and a circular cross-section on the inside is adapted. The support of this already complicated upper end frame is provided by multi-part arch segments arranged parallel to one another, of which the two outermost sub-supports are formed by semi-arches. The head ends of the extension segments are directly opposite supported the rectilinear profiles of the square outer frame of the closure body. The inner ring of the frame is not directly supported in the area of essential length sections. For reasons of strength, particularly heavy end frames have to be used because of the unfavorable load conditions are provided. The support segments or arches are also in this way unfavorable to each other that, to a certain extent, corner spaces that are poorly captured by the weather management are formed will.

According to the invention, there is a substantial simplification of the design of such a shaft bell simultaneous increase in the stability of the expansion achieved that using a double ring-shaped end frame, which consists of two arranged approximately coaxially to one another in the same plane Profile rings made of I-iron, these profile rings on all of the head ends of the arcuate ones Extension segments supported points distributed over the circumferential length between by bolts coupled upper and lower, approximately radially directed clamping lugs clamped and thereby are distanced by the coupling bolts, the lower tabs with means for releasable and / or articulated connection of the head ends of the expansion segments are provided.

In this shaft bell according to the invention comes the double-ring-shaped end frame special meaning to it. It will now be an in shaft bell

Applicant:

Bochum ironworks Heintzmann & Co.,

Bochum, Blücherstr. 33

Named as inventor:

Karl Prostka, Bochum-Linden-Dahlhausen

all circumferential areas of uniform end frame formed by the for the connection the arcuate expansion segments serving, essentially radially directed upper and lower clamping straps is formed into a torsion-resistant unit. This head piece of the shaft bell is in itself one of the most important components, the load-bearing capacity of which determines the stability of the segment-like structure Support elements depends, especially since the latter within predetermined limits one To allow compliance.

The double ring-shaped end frame sets a complicated one due to the marked design Custom production ahead. But it is the rings, which differ in diameter, through a large number of lugs arranged distributed over the circumference are coupled. A significant advantage In this case, the invention consists in these connecting or coupling elements of the two rings is at the same time the device parts, which the means for the detachable or form or have an articulated connection of the arcuate expansion segments. There are in this Fall just the points of attack of the head ends of the arcuate expansion segments through the tabs reinforced and stiffened, and the supporting forces are in this way in the most favorable proportion to both Transferring rings. It is therefore in the shaft bell according to the invention to a related simple design, considerably improved in terms of safety.

Articulated connection means between the upper ends of arch segments and another component, namely a semicircle made of channel profiles that is transverse to the segments are known per se. The previously known connection means are not for use in the shaft bell in the sense of the Invention usable.

709 508/54

Claims (1)

The type of construction according to the invention enables the greatest possible adaptation to different conditions. In such cases, where the route ends immediately behind the shaft, the brackets allow a radial arrangement of expansion segments that form the end of the route shield. In the drawing, the expansion according to the invention is illustrated in two exemplary embodiments. 1 and 2 show a section of the route in the region of a bell-shaped shaft in a longitudinal section and in plan view; F i g. 3 is a cross section along line ΙΙΙ-ΙΠ of the Fig. 2; F i g. 4 shows the design and attachment of a connection bracket; Fig. 5 shows a similar clamping device for securing manhole ring supports; F i g. 6 shows the support of an outer manhole ring section by two at a smaller distance mutually arranged arched support frames of the line support; F i g. 7 shows in plan the arrangement of the consoles and the extension in the area of one to the axis of the shaft concentrically worked out end of the route or a chamber. As can be seen from FIGS. 1 and 2, the route to the shaft is widened at least on one side and also increased in height. On both sides of the shaft, the route is expanded by means of expansion frames arranged in parallel and spaced from one another and made of suitable profiles, preferably channel profiles. In the immediate area of the shaft, a double-ring-shaped end frame la is provided at the level of the road ridges, which consists of two profile rings 1 made of double T-iron, which are arranged approximately coaxially to one another in the same plane. The manhole ring extension, not shown in the drawing, adjoins the end frame. These profile rings 1 are supported by the head ends of arcuate expansion segments 3 and 4, with the involvement of connection brackets 2. The arcuate expansion segments 3 differ only in their radii of curvature, they essentially conform to the shape of the section joint. Cross connections in the form of spacers are provided between the parallel arcuate expansion segments 3. In the edge regions of the end frame la is supported by the expansion segments of a tunnel support sheet 4, which is connected in the roof also with inclusion of a fastening device 5 to the end frame la. The two profile rings of the end frame la consist of double-T profiles; they are also concentric to one another at a small distance from one another arranged and connected by the specially designed connection brackets. These connection consoles exist according to F i g. 4 from upper and lower clamping lugs 6 and 7. The clamping lugs 6, 7 are each in their outer areas by bolts 8 'and in the middle between the profile rings coupled by bolt 8. Through the middle bolt 8 of the connection brackets, the Profile rings distanced. The middle bolt can also form a pivot axis which enables the adjustment the console into the correct position. The clamping lugs 6, 7 can also be shown in FIG. 5 used as a carrier of a manhole ring support 9 which is connected to a higher manhole ring. According to FIG. 6, the clamping lugs 7 can be designed in such a way that in the edge zones of the end frame 2 adjacent half-arches 4 with clamps, which are arranged at a small distance from one another 10 are to be determined. Like F i g. 7 shows, the route can end in the area of the shaft bell. In this case, in the area of the front wall of the section, the expansion is formed from radially positioned arcuate expansion segments 3 a. Outside the arch, the expansion segments are again set up parallel to the normal route expansion and attached to the connection brackets 2 set in a corresponding manner. In the edge area of the end frame la , two half-arches 4 are again provided for support and fastened by means of the clamping device 5. Claim: Manhole bell with an upper, radially widened, parallel to the manhole rings End frame, which is arranged with its underside on distributed over its circumference multi-part arcuate expansion segments is supported and connected to these, wherein at least one of the outermost supports is formed by a semicircle and the base points all segments are arranged at a distance from the shaft cross-section, thereby characterized in that using a double ring-shaped end frame (la) which consists of two profile rings (1) arranged approximately coaxially to one another in the same plane I-iron consists of these profile rings on all of the head ends of the arched extension segments (3, 4) supported points distributed over the circumferential length between by bolts (8, 8 ') coupled upper and lower, approximately radially directed clamping lugs (6,7) clamped and are distanced by the coupling bolts (8), the lower tabs (7) with means provided for releasable and / or articulated connection of the head ends of the extension segments are. Considered publications:
German Auslegeschrift No. 1063 100;
Austrian patent specification No. 211766. For this purpose 2 sheets of drawings 709 508/54 1.67 Q Bundesdruckerei Berlin