Classifications

• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03F—SEWERS; CESSPOOLS
  • E03F5/00—Sewerage structures
  • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B7/00—Moulds; Cores; Mandrels
  • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
  • B28B7/168—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes for holders or similar hollow articles, e.g. vaults, sewer pits

Definitions

• the invention relates to a device for forming sewer shafts each having at least two connecting sleeves, in particular the lower parts of sewer shafts, with a molded jacket having sleeve inserts and a molded core arranged therein, on one end face of which one conforms to the shape of a channel in the floor of the respective sewer shaft adapted template is arranged with an outwardly projecting projection which has an outer surface adapted to the wall of the channel in the bottom of the shaft.
• a device for forming sewer shafts which has at least two connecting sleeves.
• This known device contains at least two, preferably mutually rotatable molded jacket sections and a molded jacket having at least one jacket segment, in which a mold core is arranged.
• the shaped jacket sections are provided with socket inserts.
• the mandrel is a cylinder.
• the shaped jacket sections and the jacket segments are fixed in position by means of tension rings running coaxially to the shaped jacket.
• the connecting sleeves can be attached at various points on the circumference, so that a desired angular profile is produced. Since the mandrel is cylindrical, the Sewerage shafts on flat, circular floors (EP 0 489 302 A1).
• the bottoms of these shafts are often provided with channels that run between the side wall openings.
• the bottoms of the shafts have a slope towards the edges of the channels, so that waste water which enters the shafts through higher inlet openings flows into the channel at the bottom of the respective shaft and from there to the outlet opening of the shaft.
• the channel and the inclined floor surfaces are made by bricking.
• the templates include tunnel parts for basic forms of channels to be trained. Furthermore, the mold core must have a mold base in order to possibly arrange and position the tunnel parts rotatably. In order to obtain channels with the desired slope, the techniques described above must be used.
• the invention is based on the problem of developing a device for forming sewer shafts or manhole bases having at least two connecting sleeves, in which channels can be formed in their inclined surfaces during manhole manufacture.
• a structurally simple device is to be produced, in which the channel can be produced in a simple manner and, after it has been formed, the mold core can be easily removed with the template and reused.
• the projection (50) has a first section (100) which at its base merges into the areas for the slope of the bottom of the shaft and one has a second curved section (102) which is saddle-shaped to the slope of the channel bottom and is detachably connected to the first section (100).
• the template ensures that the channel and the inclined surfaces are formed on the bottom of the shaft.
• the shaft and channel form a monolith. It is no longer necessary to create a channel with inclined surfaces by lining up the shaft base after the respective shaft has been erected. This eliminates the need to work on the shafts on site, which can only be carried out with a certain amount of effort.
• This effort consists, for example, in the fact that suitable bricks have to be transported to the installation site and mortar has to be produced. For the masonry, craftsmanship is required, which only specialist personnel have. This effort can be avoided by the invention, so that the construction of the sewage system becomes more economical.
• the template preferably has a circular edge and a shoulder offset radially inward relative to this, which can be inserted into the hollow cylindrical mandrel with little play. This embodiment ensures that the template is centered and fixed in the mandrel.
• At least one protrusion protrudes outwards from the side of the template facing away from the heel and its cross-section and shape can be adapted to the channel in the bottom of the shaft.
• the template therefore has at least one curvature or bulge, which defines the surfaces of the channel and the inclined surfaces of the shaft floor on its outer sides.
• the projection comprises a first section, which at its base merges into the areas for the formation of the slope at the bottom of the shaft and an exchangeable second, arched section which is adapted in a saddle shape to the slope of the channel bottom and is detachably connected to the first section.
• the second sections of the protrusions are interchangeable and each adapted to a certain slope. It is therefore not necessary to keep a template in stock for the different, specified gradients. A set of second sections is sufficient, which are much simpler than the complete templates and can therefore be produced inexpensively.
• the teaching according to the invention makes it possible to provide a template with interchangeable second sections of different dimensions in order to produce manholes with channels of different slopes without changes to the first section of the template itself, which is to be referred to as the base body.
• the second section has a curvature which is adapted to the bottom of the channel, one end of which is connected to a crescent-shaped wall which carries a strip which can be screwed onto the first section.
• the distances between the outer and inner edge in the middle of the wall determine the slope of the channel.
• the projection expediently runs straight from one point on the edge of the template to another point on the edge and has walls on its end faces. These walls are located at locations that are aligned with the through openings of the sleeves during the manufacture of the manhole bases.
• the template described above is intended for manhole floors which have straight channels which extend across the shaft bottom transversely along a diameter.
• the projection extends from one point on the edge of the template in a round arc to another point on the edge and has walls on the end faces.
• the base preferably comprises a quarter circle.
• Another advantageous embodiment is that three projections, each starting from a location on the edge of the template, unite in the middle of the template and each have walls on their end faces on the edge of the template.
• the distances between the openings of the projections are preferably different.
• This template can be used to produce sewage ducts that are connected to two or three ducts on the floor. Due to the different distances between the openings, there are different deflection angles for the waste water flows.
• the lids are preferably provided with a shoulder offset inwards against the lid edge and projecting axially on the side opposite the curvatures. With the help of the heel, the covers are fixed on the cylinder cores. This makes it easier to build the mold for the production of the sewer shafts and to remove the parts inside the sewer shaft.
• a device is used to manufacture sewer shafts, in particular the lower parts of sewer shafts consisting of a lower part and further rings used, which can correspond with modifications of the device described in EP 0 489 302 A1.
• a device (10) for producing sewer shafts, in particular the lower parts of sewer shafts, has a hollow cylindrical shaped jacket (12) in which a hollow cylindrical shaped core (14) is arranged coaxially.
• the shaped jacket (12) consists of side sleeves (16) having shaped jacket sections or sleeve mirrors (18) as well as shaped jacket segments (20) and (22) which are arranged so as to overlap to the extent that a shaped jacket (12) results in a closed shape.
• clamping rings (24) and (26) are provided, which are formed by the shaped jacket sections (18) and the shaped jacket segments ( 20), and (22) protruding receptacles such as slotted brackets (28) and (30) can be introduced.
• the angle shown, for example, of 180 ° between the opposite side sleeves (16) can be changed in that the shaped jacket sections to be referred to as the sleeve mirror (18) are rotated against each other, the clamping rings (24) and (26) forming guides.
• the shaped casing segments (20) overlap more or less with the segment-shaped sections (36) and (38) starting from the socket mirrors (18) or with the shaped casing segments (20) to be designated as angled shaped sheets .
• Fig. 1 illustrates that the central molded jacket segments (22) with respect to the jacket segment sections (36) and (38) or the interchangeable shaped sheets extending from the socket mirror (18) run inside. Nevertheless, the shaped jacket segments (22) only need a lower or upper clamping ring bracket (28) and (30) in their central area, which are generally provided with the reference numerals (40) and (42) in FIG. 1, without there is a risk that the segments (22) will tip away when filling the mold; because the segments (22) are supported on the outside by the segment sections (36) and (38) or by the shell segments (20).
• the casting mold or template (34) is designed such that a channel is formed on the bottom of the lower part of the shaft.
• the shape or template (34) consists e.g. made of metal and has a circular rim (44).
• a shoulder (46) is provided which is adapted to the inner diameter of the mandrel (14) so that the shoulder (46) with little play in the Cavity protrudes, while the template (34) with the annular surface between the edge (44) and shoulder (46) is supported on one end face of the hollow cylindrical mandrel (14).
• the circular edge (44) and the shoulder (46) are provided in the same manner in all embodiments of templates or casting molds. Therefore, these elements are provided with the same reference numerals in the embodiments of stencils shown in FIGS. 3 to 8.
• the template (34) is designed in the form of a lid and has a projection (50) which runs in a straight line along a diameter line (48) and projects outwards on the side opposite the shoulder (46).
• the projection (50) extends to the Edge (44) and is adapted to the channel shape, ie it has a semi-cylindrical part (52), the longitudinal edges of which merge into essentially flat surface sections (54), each of which merges into angled, trough-shaped surface sections (56) which lead to the edge ( 44) are inclined.
• the surface sections (56) - also referred to as sloping surfaces - are in the form of a segment of a circle and their inclination is 1:20 in particular, the edge (44) with the template (34) resting on the forme cylinder (14) lower than the lower ends of the surface sections (54 ) lies. Walls (58) are provided on both ends of the projection (50), which face the recess cores (32) when the template (34) rests on the mold core (14).
• the template (34) When pouring concrete into the device (10), the template (34) forms a channel running over the bottom of the manhole base and inclined flat inclined surfaces between the edges of the bottom and the edges of the channel. After the concrete has hardened, the forme cylinder core (14) and the template (34) are removed from the interior of the manhole base. A monolithic shaft with a desired slope is available.
• FIG. 4a and b show a shape or template (60) which, like the template (34), has a circular edge (44) with a shoulder (46) offset radially inward relative to it.
• the template (60) also has the shape of a circular lid and has a protrusion (62) protruding to one side, which describes an arc which comprises a quarter circle.
• the projection (62) is composed of a section (64) with a semi-circular cross-section and a section (66) which has walls which each form a quarter of a truncated cone.
• Inclined, trough-shaped surfaces or inclined surfaces (68, 70) extend from the bases of the walls of section (66) and run towards the edge (44). The inclination of these surfaces, like that of surfaces (56), is 1:20.
• the template (62) has walls (72) on its end faces, which face the correspondingly set recess cores (32).
• FIGS. 5a and b Another embodiment of a template is shown in FIGS. 5a and b.
• the template (74) according to FIGS. 5a, 5b also has the shape of a cover with a circular edge (44) and a shoulder (46) for fixing the position.
• FIG. 5a and b show a template (74) for a manhole base which has a forked channel.
• the template (74) or casting mold for the bottom of the manhole base like the casting mold described above, is designed as a cover with a circular edge (44) against which a shoulder (46) is offset radially inwards.
• the shoulder (46) projects into the interior of the hollow cylindrical forme cylinder (14) and thus fixes the template (74).
• a convex projection (76) protrudes from the side of the lid-shaped template (74) facing away from the shoulder (46) and has three sections (78), (80), (82), which are approximately in the center of the template (74) merge into one another and thus form a bifurcating bulge on one side of the template.
• the three sections (78), (80), (82) extend to the edge of the lid (44) and each have on the end faces walls (84) which, when the casting mold is mounted, ie when the template is placed on the forme cylinder (14) (74), recess cores (32) face each other if the device (10) is provided with three recess cores (32).
• the sections (78), (80), (82) have cross sections like the projections (50), (62) described above, the sections (78), (80), (82) or bulges in the center of the template through the Form a transition into one another with a larger cross-section.
• the centers (86), (88), (90) of the three end faces (78), (80), (82) are at different distances from one another.
• Trough-shaped surfaces (92), (94), (96) extend from the bases of the projections (78), (80), (82) and extend to the edge (44) and each incline towards the edge (44 ) so that the surfaces (92), (94), (96) close to the sections (78), (80), (82) opposite the edge (44) towards the centers the sections (78), (80), (82) have shifted levels.
• the slopes are especially 1:20.
• the template (74) or casting mold creates a forked channel in the lower part of the shaft, which can be used to bring together wastewater streams that are to be combined from different directions in the shaft and to be passed on in a single channel.
• the template (74) can also be used for manhole bases that only have two channel entrances. Depending on the directions in which the channels are brought together on the lower part of the shaft, two of the three partial channels can then be selected that are suitable for combining the wastewater flows.
• a template (98) is made available, which is shown in more detail in FIGS. 6 to 8 and consists of a first section (100), which can be used regardless of the slope of the channel bottom, and a second section (102), which is releasably attached to the first section (100) and its inclination is adapted to the desired inclination or the slope of the channel bottom.
• the template (98) is designed for a channel running along a diameter line of the circular shaft bottom and, in accordance with the template (34), contains the edge (44) and the shoulder (46).
• flat surface sections (54) emanate from trough-shaped surface sections (56) whose shape is adapted to the bottom of the manhole base.
• the flat surface sections (54) are modeled on part of the two side walls of a channel, which makes up approximately half the height of the channel.
• the lower part of the channel is produced by means of the saddle-shaped section (102) when casting the lower part of the manhole.
• the section (102) is curved in accordance with the bottom of the channel and has a curvature with two straight longitudinal edges (104), which are placed on the ends (106) of the walls of the surface sections (54) in order to complete the template (98), ie to assemble it for the production of the casting mold.
• a crescent-shaped wall (108) is inserted into the arch and connected to the saddle-shaped part.
• the other end of section (102) has no such crescent section.
• the section (100) has a wall (110), (111) at both ends, which protrudes beyond the ends (106) in an arc, for example semicircular, adapted to the curvature of the section (102), but by the thickness of the Walls having surface sections (54) is offset radially inwards.
• a strip (112) is attached to the crescent-shaped wall (108) and projects beyond the inner concave edge of the wall (108).
• the placed on the outside of the wall (108), e.g. welded strip (112) extends approximately to the level that the longitudinal edges (104) have, and has a hole (114) near its free end into which a screw (116) is inserted.
• the distance in the middle between the outer and inner edge of the crescent-shaped wall (108) determines the slope that the channel has between the side sleeves.
• the template (98) is assembled by placing the section (102) on the section (100).
• the longitudinal edges (104) of the section (102) lie on the ends (106) of the walls of the surface sections (54).
• the concave edge of the crescent-shaped wall (108) lies on the arch protruding from the ends (106), e.g. Semicircle, the wall (110).
• the end of the section (102) opposite the sickle-shaped wall (108) lies on the arch projecting over the ends (106), e.g. Semicircle, the wall (111).
• In the wall (110) there is a threaded hole (118) with which the hole (114) is aligned when the section (102) is mounted.
• the screw (116) inserted into the hole (114), the strip (112) and thus the section (102) are attached to the section (100).
• Fig. 7 shows the template (98) or shape in the assembled state from the front.
• Fig. 8 shows the template (98) in the assembled state in a side view.
• the concave inner wall of the section (102) can have a reinforcement (122), as can be seen from FIG. 8.
• FIG. 8 also clearly shows the trough-shaped design of the surface sections (56), which have a point (124) approximately in the middle, which has a shorter distance from the section (102) than that to the walls (110), (111) adjacent surface areas.
• the templates (60) and (74), like the template (98), are preferably formed in two parts, i.e. they have a section which is independent of the slope of the channel and a further section which is detachably connected to this section and each has a shape which produces the desired slope.
• the further sections of the templates (60) and (74) are formed at their ends in the same way as section (102), i.e. the slope is created with a crescent-shaped wall, on which there is a fastening strip which is screwed onto the end faces of the part of the other sections intended for channel formation.
• the curvatures of the other sections of the templates (60) and (74) are adapted to the desired channel shape.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Mechanical Engineering (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Sewage (AREA)
• Moulds, Cores, Or Mandrels (AREA)
• Mixers Of The Rotary Stirring Type (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)
• Cleaning In General (AREA)
• Treatment Of Sludge (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
• Producing Shaped Articles From Materials (AREA)
• Discharge Lamps And Accessories Thereof (AREA)
• Circuit Arrangements For Discharge Lamps (AREA)
• Physical Or Chemical Processes And Apparatus (AREA)
• Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=8011095

Family Applications (1)

Country Status (10)

Cited By (3)

Families Citing this family (2)

Family Cites Families (7)

• 1995
  • 1995-07-28 DE DE29512165U patent/DE29512165U1/de not_active Expired - Lifetime
• 1996
  • 1996-07-19 EP EP96111668A patent/EP0755760B1/de not_active Expired - Lifetime
  • 1996-07-19 ES ES96111668T patent/ES2164199T3/es not_active Expired - Lifetime
  • 1996-07-19 PT PT96111668T patent/PT755760E/pt unknown
  • 1996-07-19 AT AT96111668T patent/ATE205767T1/de not_active IP Right Cessation
  • 1996-07-19 DE DE59607709T patent/DE59607709D1/de not_active Expired - Lifetime
  • 1996-07-19 DK DK96111668T patent/DK0755760T3/da active
  • 1996-07-25 SK SK976-96A patent/SK283731B6/sk unknown
  • 1996-07-26 HU HU9602070A patent/HU219322B/hu not_active IP Right Cessation
  • 1996-07-26 CZ CZ19962221A patent/CZ288238B6/cs not_active IP Right Cessation
  • 1996-07-26 PL PL96315421A patent/PL315421A1/xx unknown
  • 1996-07-26 PL PL96112133U patent/PL59151Y1/pl unknown

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