DE102010015360A1 - Form system for manufacturing monolithically poured concrete shafts, has counterpart, face plate, adapter bracket and ring used in casting mold as form negative for coagulates to manufacture monolithic shaft lower parts from concrete - Google Patents

Abstract

The system has an adapter bracket (1) for accommodating a circular adapter ring (3). A counterpart (4), a face plate (2), an adapter bracket and the adapter ring are formed as plastic molded parts and used in a casting mold as form negative for coagulates to manufacture monolithic shaft lower parts from concrete, where the casting mold has a mold core, a shaped ring and an external shuttering. The counterpart, face plate, adapter bracket and the adapter ring are made of metal or ceramic materials.

Description

The invention relates to a mold system for producing monolithically cast concrete manhole bases, consisting of a channel and berm-forming channel negative mold ( 4 ), which is connected to an adapter system for forming an optimal transition of the pipe mouth on the channel or the shaft wall. The adapter system consists of a preferably made of a thermoplastic foam adapter receptacle ( 1 ), which has a circular adapter ring ( 3 ) and via a plug connection by a one-piece ( 2 B ) or multi-part produced face plate ( 2a ) is recorded. The face plate ( 2 ) is formed on the front sides of a channel and berm of a monolithic concreted manhole base forming channel negative form ( 4 ) and forms together with the adapter receptacle ( 1 ) the transition from the channel negative form ( 4 ) to the pipe system, wherein the adapter ring ( 3 ) for dimensionally accurate, protected reception of a shaft lining ( 5 ) or pipe end ( 6 ) and ensures an optimal transition from the channel to the pipe system in the monolithically cast manhole base. The channel negative form ( 4 ) consists of a molded part, which forms the negative shape of the channel and the Bermenflächen and at the bottom by a star-shaped arranged struts steel ring ( 7 ) is strengthened. The realization of curved channels as well as the integration of lateral inlets takes place on the channel negative mold ( 4 ) in an angle grid of 10 ° each; The exact pipe connection is determined by the integration of obliquely cut shaft lining ( 5 ) in the adapter ring ( 3 ). The shaft feed ( 5 ) can be angled on both sides by a maximum of 5 ° in the vertical and horizontal directions by obliquely trimming the manhole collar area.

Manhole bases form the basis of vertical manholes in sewer systems for the passage of dirt or rainwater. The channel guidance in the manhole bases enables changes of direction as well as the integration of lateral inlets. The state of the art includes not only Betongerinnen, which are either produced monolithically in a cast or subsequently introduced manually, and various channel linings, z. B. by introducing channel clinker or lost formwork of different types, eg. B. plastic shaft bottoms or Tonschalenelementen.

The invention relates to a mold system for producing monolithic manhole bases with a concrete trough without further lining, which in corresponding molds, consisting of a mold core with the channel negative mold positioned thereon, a mold ring for forming the manhole transition and an outer formwork, also referred to as a shell mold, monolithic in one Cast are made. The prior art corresponds to the use of channel negative molds of metal, plastic or other suitable materials. DE 3611349 A1 describes, for example, a reusable channel negative mold, which is arranged in a shell mold and removed after casting from the mold shell. Out EP 1627716 A2 and DE 10317321 A1 is the use of moldings made of rigid thermoplastic foam, which individually or in combination with other fittings made of rigid thermoplastic foam, the channel of a manhole base, which are also positioned in a shell mold and cast in concrete, after curing of the concrete, but with destruction of the thermoplastic foam be removed from the hardened manhole base. The disadvantage here is the relatively large amount of the resulting in the destruction of rigid foam material residues, which in the removal of the channel-negative molds after EP 1627716 A2 and DE 10317321 A1 accrues.

The pipe connection is realized in the known method in that shaft feed molds or moldings are fixed flush before pouring the front sides of the channel negative molds. If the channel-negative molds removed after curing of the cast concrete manhole base, this procedure leads, in particular in the region of the pipe vertex to a sharp-edged transition from the shaft wall into the muzzle. This is particularly disadvantageous in maintenance and entertainment work on the duct system, since in this area introduced flushing hoses can be damaged or at least subject to a much higher wear than in a rounded version of the apex area of the muzzle.

The object of the invention is to avoid the above-described disadvantages of a sharp-edged formation of the apex area between the channel and shaft wall, to develop a mold system with the largest possible proportion reusable moldings and thereby reduce the onset of non-reusable residues. At the same time, the comparatively high investment costs of known reusable molding systems should be significantly reduced.

According to the invention, this object is achieved as follows: The channel negative mold ( 4 ) is preferably used as a plastic molding - stabilized by welded channel reinforcements ( 8th ) and by a star-shaped struts provided steel ring ( 7 ) - executed. The channel negative form ( 4 ) is connected to the front plate ( 2 ) by Welding or bolting connected. To prepare the casting process, the adapter holder ( 1 ) fastened via a plug connection flush with the front plate. At the adapter holder ( 1 ) is a circular adapter ring ( 3 ) fixed. The adapter ring ( 3 ) serves to receive a shaft lining ( 5 ) or manhole molded part, which are fixed therein before pouring. Due to the oblique trimming of the manhole collar area, the shaft lining ( 5 ), if necessary, angled on both sides by a maximum of 5 ° in the vertical and horizontal direction, by a convex trimming in the insertion area are the shaft lining ( 5 ) flush with the wall of the shell mold. After dimensionally accurate fixation of the above-described elements, the channel negative mold ( 4 ) placed on the mold core of a mold and closed the outer mold shell. The manufacture of the manhole base is done by pouring the fixed moldings with a prefabricated concrete mix.

After hardening of the concrete, the outer shell mold is opened and turned the finished concrete part. Thereafter, the channel negative form ( 4 ) detached from the finished concrete part, wherein the adapter ring ( 3 ) and optionally also the shaft lining fixed therein ( 5 ) as a lost formwork for the pipe connection in the shaft wall ( 9 ) remain. The one in the shaft wall ( 9 ) remaining adapter ring ( 3 ) forms a rounded, smooth transition from the wall of the manhole base in the muzzle and allows the exact recording Rohrspitzenden ( 6 ). At the same time, the rounded transition from the shaft wall ( 9 ) to the muzzle, that flushing technology (hoses) will not be damaged when inserted over the top of the channel. The adapter holder ( 1 ) is removed during the removal of the channel negative mold ( 4 ), the remaining parts can be easily removed and form the only non-reusable residues of the molding system, the channel negative mold and the front plate are reusable. In addition to the reusability is another advantage in the plastic version of the channel negative mold ( 4 ) in the compared to known reusable channel negative molds significantly reduced weight and thereby significantly easier handling of the channel negative mold ( 4 ).

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3611349 A1 [0003]
• EP 1627716 A2 [0003, 0003]
• DE 10317321 A1 [0003, 0003]

Claims (4)

Mold system for producing monolithically cast concrete manholes, consisting of a channel and berm-forming channel negative mold ( 4 ) with a straight or curved channel course and with or without lateral inlet, furthermore consisting of a face plate ( 2 ) and an adapter receptacle ( 1 ) for receiving a circular adapter ring ( 3 ) characterized in that channel negative form ( 4 ), Face plate ( 2 ), Adapter mount ( 1 ) and adapter ring ( 3 ) are formed as plastic moldings, and are used in a mold consisting of a mold core, mold ring and an outer mold as a mold negative for flumes and berms for the production of monolithic manhole bases made of concrete. Mold system according to claim 1, characterized in that the channel negative mold ( 4 ), Face plate ( 2 ), Adapter mount ( 1 ) and adapter ring ( 3 ) are formed as plastic moldings, and are used in a machine concrete casting plant as a mold negative for flumes and berms for producing monolithic manhole bases made of concrete. Mold system according to claim 1 or 2, characterized in that the channel negative mold ( 4 ) and / or face plate ( 2 ), and / or adapter receptacle ( 1 ) and / or adapter ring ( 3 ) consist of metal. Mold system according to claim 1 or 2, characterized in that the channel negative mold ( 4 ) and / or face plate ( 2 ), and / or adapter receptacle ( 1 ) and / or adapter ring ( 3 ) consist of ceramic materials.

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