SK97696A3 - Device for making drainage shafts - Google Patents

Abstract

The mould casing (12) has sleeve inserts, and contains a core (14) one end side of which has a template (34) matching the shape of the channel in the base of the drainage shaft. The template has an outward protruding protuberance which has an outer surface matching the wall of the channel at the bottom of the shaft. The protuberance has a first part leading at its base into the surfaces for the gradient of the base of the shaft. A second curved part of the protuberance is saddle-shaped to match the gradient of the channel base and is detachably joined to the first part, the template has a circular rim and radially inwardly displaced edge fitting into the hollow cylindrical core.

Description

DEVICE FOR ESTABLISHING SEWAGE SEATS

Technical field

The invention relates to a device for forming sewer manholes, each having at least two inlets, in particular lower sewer manholes, with neck inserts having a cladding and one cladding placed therein, on the front side of which there is a template in the form of a trough in the floor of the existing sewer manholes, with one outwardly projecting projection having an outer surface adapted to the wall of the trough in the shaft floor.

BACKGROUND OF THE INVENTION

It is known to provide sewer manholes having at least two inlets. The known device comprises at least two preferably rotatable portions of the forming jacket and at least one jacket segment for the forming jacket, which is arranged in the forming core. The parts of the forming jacket are provided with neck inserts. The core is a cylinder. The molding sheath portions and sheath segments are fixed by tensioning rings extending coaxially to the mold sheath. With this known device, the inlet throats can be provided at different locations, thus creating the desired angle of their course. Because the generating core is cylindrical, the sewer manholes have straight, circular bottoms (EP 0 489 302 A1)

In order to transfer the waste water and the entrained waste through the sewer manholes, the floors of these manholes are often formed with gutters that run between the side wall passages. The shafts of the shafts are inclined towards the edges of the troughs, and thus the waste water which flows through the upper inlet opening flows into the trough on the floor of the former shaft and from there comes to the outlet opening of the shaft.

According to the current method of construction of the shaft, gutters and inclined floor surfaces are created by walling.

The apparatuses of the method described at the outset are selected according to DE 84 23 080 U1 and DE-A-0 23 080 U1. DE 41 20 483 C2. The templates contain tunnel sections for the basic forms of the gutters to be created. In addition, the generating core must have a floor form where the tunnel parts can optionally be rotated and positioned. In order to obtain troughs with the desired inclination, the previously described techniques must be used.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for forming existing sewer manholes or lower portions of manholes with at least two inlet orifices, in which the gutters in their sloping surfaces can already be formed during manhole production. At the same time, it is believed that it should be a simple-to-install device that can easily be used to produce a trough and then, after this, could be removed with the template from the generating core without difficulty and ready for reuse.

SUMMARY OF THE INVENTION

This problem is solved by the device according to the invention such that the protrusion of the first part, which in its lower part passes into the slope bottom surfaces, is provided with a second arched part adapted to form a seat on the slope of the trough bottom and detachably connected to the first part. When casting (concreting) an existing sewer shaft, respectively. at the bottom of the shaft, the template ensures that a trough and a slope are formed at the bottom of the shaft. The shaft and the gutter form one monolithic unit. After the existing shaft has been installed, it is no longer necessary to make a trough on the bottom of the shaft by means of the walling. This saves work on the shafts carried out on the construction site, which can only be done at a certain cost. These costs include, for example, that suitable bricks must be transported to the site and mortar produced. Artisanal skills are required for walling, so professional staff is essential. By means of the invention these costs can be avoided and thus the construction of the sewer system will be economical.

Preferably, the template has a round edge and a radially inwardly directed shoulder for the device that is easily mounted in the hollow cylindrical core. This embodiment of the mold enables reliable centering and fixing of the template in the mold core.

According to the invention, at least one projection extends from the side of the template facing away from the shoulder, which can be adapted to the trough in the shaft floor by its cross-section and course. The template also has at least one vault or bulge which, on its outer sides, determines the inclination surfaces and the inclined surfaces of the shaft body.

The protrusion comprises a first portion which, at its lower part, passes into surfaces to form a slope at the bottom of the shaft, and a replaceable second arched portion, adjustable for inclinations of the trough bottom, and which is releasably connected to the first portion. This will solve the problem, and troughs with desirable slopes can be formed economically on the shafts or lower portions of the shafts. The second portions of the protrusions are replaceable and always adaptable to a certain inclination. Therefore, it is not always necessary to hold a template in the stock for different predefined slopes. A kit for the second parts is sufficient, which is made much simpler than complete templates and can therefore be produced much cheaper.

It is recognized from the invention that it is possible to use a template with replaceable second portions having different dimensions which make it possible to manufacture manholes with gutters of different slopes without actually having to change the first part designated as the basic cut-out of the template.

Advantageously, the second part has a vault-adjustable trough at the bottom, the end of which is connected to the creeping wall supported by the strip and which is screwed to the first part. The distances between the outer and inner edges in the center of the wall simultaneously determine the inclination of the trough.

The projection expediently extends directly from one point of the edge of the template to another point at the edge and has walls on its front surfaces. These walls are located in places which, in the manufacture of the lower parts of the shafts, are aligned with the through holes of the necks.

The templates described above are designed for bottom shafts that have straight troughs and which run transversely along the diameter through the bottom of the shaft.

In another preferred embodiment, the projection extends from one edge of the template in a full arc to another edge location and has walls on the faces. The bottom is preferably in the form of a quadrant. With the template described above, sewer manholes can be produced. the lower parts of the shafts, whose troughs at the bottom of the shaft always divert the waste water streams in the arch, e.g. 90 °. Such shafts are e.g. in road bends.

Another expedient embodiment is that the three protrusions, each extending from a single location at the edge of the template, are joined at the center of the template and each has walls at the edge of the template at each end face thereof. With this template, forked troughs can be produced in the shaft bottoms.

Preferably, the distances between the bore holes are different. With this template, sewer manholes can be produced, which will be connected to the bottom in two or three channels. Due to the different distances between the openings, different reflection angles for the waste water streams are achieved.

It is preferable to provide hatches with a protruding shoulder extending inwardly against the edge of the hatch, located axially on the sides of the opposite vaults. The hatches are fixed to the cylindrical cores by means of a shoulder. This facilitates the design of the mold for the manufacture of sewer manholes and the dismantling of parts within the sewer manhole.

BRIEF DESCRIPTION OF THE DRAWINGS

Further details, advantages and features of the invention are given not only by the claims and the corresponding individual features and / or features in combination, but also by the following description of preferred embodiments illustrated in the drawings, wherein:

1 shows a device according to the invention for forming the lower parts of sewer manholes in plan view

Fig. 2 shows a section along line A - B in Fig. 1

Fig. 3a a mold for the production of a trough on the monolithic lower part of the shaft - top view

FIG. 3b the mold of FIG. 3a in a side view

Fig. 4a another mold for producing a trough on the monolithic lower part of the shaft

4b shows the mold of FIG. 4a in a side view

Fig. 5a is a supplemental mold for the production of a trough on the monolithic lower part of the shaft

FIG. 5b shows the mold of FIG. 5a in a side view

6 shows a template consisting of two parts in a mutually displaced position

FIG. 7 shows the template of FIG

Fig. 8 is a side view of the template of Fig. 7

DETAILED DESCRIPTION OF THE INVENTION

For the production of sewer manholes, especially the lower parts of sewer manholes consisting of a bottom part and other rings, a device will be used which, with some variation, may correspond to the device described in EP 0 489 302 A1. The device 10 for the manufacture of sewer manholes, especially the lower parts (parts) of the sewer manholes, has a hollow cylindrical molding sheath 12 in which a generating core 14 is arranged coaxially.

The molding sheath 12 consists of portions of the molding sheath or mirrored throats 18, as well as molding sheath segments 20 and 22, which are provided with side throats 16 and which are circumferentially overlapping to give the molding sheath 12 closed form.

In order that the opposed molding jacket parts 18, as well as the molding jacket segments 20 and 22, can be fixed in a fixed position to form the molding jacket 12, it is envisaged to have tension rings 24 and 26 which can be secured in protruding bearings of the molding jacket parts 18 and segments of the cladding 20 and 22, as well as in the recesses of the consoles 28 and 30.

Cores 32 form recesses from the side throats 16, which form a connection to the template 34 and 14, respectively. to a casting mold which lies on the top face of the hollow cylindrical forming core 14 and closes this in the form of a hatch.

Since the elements 18, 20 and 22 forming the sheath 12 are positionally fixed by the tension rings 24 and 26, no additional fasteners or fasteners are required. the gear rims and the pinion which interact with it in order to move the elements in this way relative to each other, so that the neck inserts create a desired angle with respect to each other.

As particularly apparent in the plan view of the device 10, e.g. The 180 ° angle between the opposing throats 16 is modified in that the opposed throat portions of the molded sleeve 18 rotate relative to one another, the tensioning rings 24 and 26 forming guides. Depending on the rotation of the opposing necks 18, the segments of the cladding 20 overlap each other more or less with the segments 36 and 38 which extend from the opposing necks 18 and 18, respectively. with molding jacket segments 20, which are referred to as angle-forming sheets.

Fig. 1 illustrates that the middle segments 22 of the molding shell extend internally with respect to the housing portions 36 and 38 extending from the opposing portions 18 and 18, respectively. transition plates. In addition, for the segments of the sheath 22, only the lower and lower portions are required. the upper bracket of the tension ring 28 and 30 shown in FIG. 1, generally designated by 40 and 42, without the risk of the segments 22 tilting when the mold is filled, since the segments 22 will be supported from the outside by the segment parts 36 and 38, respectively. sheath segments 20.

Casting mold, resp. the template 34 is designed so that there is a trough on the floor of the bottom part of the shaft. Form, respectively. the template 34 comprises e.g. On one side of the template 34, a shoulder 46 is disposed radially inwardly from the edge 44, which is so adapted to the inner diameter of the core 14 that the shoulder 46 slightly protrudes into the opening (cavity) thereby supporting the template. 34 with a ring-forming surface between the rim 44 and shoulder 46 on the face of the hollow cylindrical generating core 14. The ring-forming ring 44 and shoulder 46 are provided in the same form in all embodiments of the template forms, respectively. casting molds. Therefore, the variation elements of the embodiments of the templates shown in FIG. 3 to 8, designated by the same reference numerals.

The template 34 is in the form of a hatch and has a rectangular projection 50 extending along the diameter line 48 which extends outwardly on the side opposite to the shoulder 46. The projection 50 extends to the edge 44 and is adapted to form a trough, i. wherein the part has the shape of a half-cylinder, the longer edges of which extend into substantially planar portions 54, which each pass into angle-forming, mold-forming portions 56 that are inclined towards the edge 44. The planar portions 56, also referred to as sloping surfaces, form circular In particular, the segments and their slope are 1:20, the edge 44 on the cylindrical mold 14 of the lying template 34 being deeper than the lower ends of the planar portions 54. Walls 58 are formed on both front faces of the projection 50 which oppose the cores forming the cavity 32. the template 34 lies on the core 14 being formed.

When the concrete is filled into the device 10, the template 34 forms a trough running across the floor of the bottom part of the shaft and the sloped planar surfaces between the bottom edges and the edges of the trough. After the concrete has hardened, the forming cores 14 in the form of cylinders and the template 34 are removed from the interior of the lower shaft part. This creates a monolithic manhole with a trough of the desired inclination.

Various channel shapes can be produced using additional templates. In FIG. 4 a, b is the depicted form, respectively. The template 60, like the template 34, has a round edge 44, against which a shoulder 46 is disposed radially inwardly. The template 60 also has a round hatch shape and has a protruding protrusion on one side that describes an arc representing a quadrilateral. The protrusion 62 is comprised of a semicircular cross-section 64 and a section 66 having walls that each form a quarter of the truncated cone shell. From the bottom of the walls of the portion 66, there are inclined, bath-forming surfaces, respectively. gradient surfaces 68.70, which extend towards the edge 44. As with surfaces 56, the gradient of these surfaces is 1:20.

The projection 62 forms a trough in the shaft floor through which the wastewater is diverted by 90 ° along the arc. The template 62 has walls 72 on its end faces which are opposed to correspondingly positioned cores forming cavities 32.

Another embodiment of the template is shown in FIG. 5a, b. The template 74 of Figures 5a, b also has a hatch shape with a circular rim 44 and a position fixing fit 46.

Figures 5a and b show a template 74 for a lower part of a shaft having a fork-shaped trough. Template 74 resp. The casting mold for the bottom of the bottom part of the shaft is, like the casting mold described above, formed as a hatch with a circular edge 44, against which a shoulder 46 is positioned radially inwardly. The shoulder 46 protrudes into the interior of the cavity. a mold cylinder 14 and thus fixes the template 74. From the far side of the hatch forming the template 74 facing away from the shoulder 46, a convex projection 76 has three portions 78, 80, 82 which join approximately in the center of the template 74 to form a forked bulge. on one side of the template. The three portions 78, 80, 82 extend to the edge of the lid 44 and each have a wall 84 on the front surfaces which, when the casting mold is mounted, i. with the template 74 mounted on the forming roller 14, it faces the cores forming the cavities 32, as long as the device 10 is made with three cores for forming the cavities

The portions 78, 80, 82 have cross sections as previously described protrusions 50, 62, wherein the portions 78, 80, 82, respectively. bulges in the center of the template by passing into each other form a band with a larger cross-section. The centers 86, 88, 90 of the three end faces 78, 80, 82 have different distances to one another. From the lower portions of the protrusions 78, 80, 82, a tub forming surfaces 92, 94, 96 extends to the edge 44 and always has a slope against the edge 44, and thus surfaces 92, 94, 96 near the surfaces 78, 80, 82 opposite of the edge 44 have a shifted level towards the center of the portions 78, 80, 82. In particular, the slopes of the surfaces are 1:20.

Template 74, respectively. The casting mold forms a fork trough in the lower part of the shaft, which can be used to collect together the waste water streams which are connected from different directions in the shaft and are to be further discharged in one channel.

The shank 74 can also be used in bottom portions of shafts having only two channel entries. Depending on the directions in which the ducts in the lower part of the shaft will be guided together, two or three sub-ducts may be selected which are suitable for the common conduction of the waste water streams.

The gutters on the bottom of the shafts must be adapted in their slopes from one hole of the shaft to another, to the present slope with the shaft bordering the channel pipe. In a further embodiment of the invention, a template 98 will be provided, which is shown in more detail in Figures 6 to 8 and consists of a first portion 100 which can be used independently of the chute bottom and a second portion 102 which is detachably mountable on the first portion 100. and which by its inclination is adaptable to the desired inclination, respectively. the bottom of the gutter. The template 98 is formed for gutters extending along the diameter line of the round bottom of the shaft and comprises, in accordance with the template 34, an edge 44 and a shoulder 46. As with the template 34, the flat flat portions 54 emanate from the tub forming flat portions 56 bottom of the bottom parts of the shafts. The flat planar portions 54 are formed by a portion of the two side walls of the trough that forms approximately half the height of the trough. The lower part of the trough is produced by means of a seat-forming part 102 when casting the lower part of the shaft. The part 102 is arched respectively to the floor of the trough and has a vault with two straight longitudinal edges 104 that will be fitted at the wall ends 106 of the flat parts 54 to complete the template 98, i. to be mounted to produce a casting mold. At one end of the portion 102, a sickle-shaped wall 108 is mounted in the arch and is connected to the saddle-forming portion. The other end of the portion 102 does not have such a sickle-shaped portion. The portion 100 has at each end a wall 110, 111 which extends over the ends 106 and has an arch adapted to the arch of the part 102, for example forming a semicircle, but fitted radially inwardly by the width of the walls of the flat part 54.

A bar 112 is mounted on the scraper wall 108, which extends beyond the inner concave edge of the wall 108. This outer wall 108, for example a welded bar 112, extends to the level of the longitudinal edge 104 and has an aperture near its free end. 114. in which a screw 116 is inserted. The distance in the center between the outer and inner edges of the crescent wall 108 determines the slope the trough has between the side throats.

The template 98 is mounted such that the portion 102 will be mounted on the portion 100. The longitudinal edges 104 of the portion 102 are disposed on the ends 106 of the flat portions 54. The ends of the portions 102, opposite the miter wall 108, are disposed on the ends 106 of the projecting arc, for example, the semicircle, the wall 111. In the wall 110 there is a screw hole 118 with a hole 114 aligned therewith. fitted into the hole 114, the strip 112 and thereby the portion 102 will be fixed to the portion 100.

Fig. 7 shows a front view of the template 98 and FIG. in the assembled state. In FIG. 8 is a side view of the template 98 in an assembled state. The concave inner wall of the portion 102 may have a throat 122 as seen in FIG. 8. FIG. 8 is also clearly visible to the tub forming the flat portions 56 which have a shorter distance from the portion 102 approximately at the center of the location 124 than from the walls 110, 111 bounded by the planar zones.

For different channel slopes, but always the same shaft diameters, different sections 102 with different miter-shaped walls 108 are required. The distances 120 of these walls 102 are always adapted to the required channel slopes. The portion 100 with the remaining portion of the template 98 is independent of the slope of the gutter and will be used in conjunction with the always needed portion 102.

The templates 60 and 74 are preferably formed in the same two parts as the template 98, i. they have one part independent of the chute and another one removably connected to this part in a form which always forms the desired inclination.

The other parts of the templates 60 and 74 are formed at their ends in the same manner as the part 102. i.e. the slope is formed by a scythe-like wall, on which there is a fastening strip, which will always have other parts screwed on the front walls of the part intended to form a trough. The arcs of the other portions of the templates 60 and 74 are each adapted to the desired channel shape.

Claims (9)

PATENT CLAIMS A device for forming sewer manholes each having at least two inlet ports, in particular lower portions of sewer manholes, with a generating sheath having throat inserts and one generating core disposed in said generating sheath, one face of which is in the form of a gutter in the floor of an existing sewer a matching template with an externally protruding protrusion which forms an adapted external surface on the channel wall in the shaft floor, characterized in that the protrusion (50) of the first part (100), which at its lower part passes into the slope surfaces, is provided with a second arched portion (102), forms a seat adapted to the slope of the gutter floor and is releasably connected to the first portion (100). Apparatus according to claim 1, characterized in that the template (34, 60, 74) has a round edge (44) and one shoulder (46) disposed in this radially inward direction, which can be simply inserted into the hollow cylindrical core (30). 14). I Apparatus according to one or more of the preceding claims, characterized in that the second part (102) has a vault adapted to the bottom of the trough, one end of which is connected to the sickle wall (108) and which carries a bar (112) screwable to the first part ( 100). Device according to one or more of the preceding claims, characterized in that the first part (100) is provided with flat parts (54) for forming the side walls of the trough that terminate at approximately half the height of the trough, and the walls (110, 111) are disposed in a corresponding part of the first part (100), the flat parts (54) of which protrude as shoulders for the second arch-forming part (102). Device according to one or more of the preceding claims, characterized in that the projection (50, 62) extends directly from one point on the edge (44) to another point on the edge (44) or extends from one point of the edge (44) of the template. (34) in a circular arc, preferably in the form of a quadrilateral, to another point of the edge (44) and has walls (72) on the faces. Device according to one or more of Claims 1 to 5, characterized in that the three projections (78, 80, 82), which always extend from one point on the edge (44) of the template (74), are joined in the center of the template (44). ) and have walls (84) on their end faces at the edge (44). Apparatus according to claim 6, characterized in that the faces of the projections (78, 80, 82) are spaced apart from one another along the edge (44). Device according to one or more of the preceding claims, characterized in that the inclined surfaces (56, 68, 92, 94) towards the edge (44) have a slope of 1:20. Device according to one or more of the preceding claims, characterized in that the inclined surfaces (56, 68, 92, 94) are tub-shaped.