SU950540A1

SU950540A1 - Mould for manufacturing tubular articles from concrete mixes by centrifugal method

Info

Publication number: SU950540A1
Application number: SU803229097A
Authority: SU
Inventors: Евгений Борисович Терехов; Владимир Михайлович Скрипник
Original assignee: Проектное Конструкторско-Технологическое Бюро "Узводприборавтоматика" Объединения "Водстройиндустрия"
Priority date: 1980-12-31
Filing date: 1980-12-31
Publication date: 1982-08-15

Description

Изобретение относится к производству трубчатых изделий из бетонных смесей методом центрифугирования.The invention relates to the production of tubular products from concrete mixtures by centrifugation.

Известны разъемные формы для изготовления центрифугированных изделий, содержащие полуформы с продольными фланцами, уплотнения в виде эластичных прокладок и замковые соединения [1]. IKnown demountable molds for the manufacture of centrifuged articles containing half-molds with longitudinal flanges, seals in the form of elastic gaskets and lock joints [1]. I

Недостатком известной формы является наличие большого количества замковых соединений, выполненных в виде клиновых элементов для обеспечения равномерности прижима уплотнений, что увеличивает металлоемкость формы, трудоемкость ее изготовления и усложняет эксплуатацию.A disadvantage of the known form is the presence of a large number of locking joints made in the form of wedge elements to ensure uniformity of the pressure of the seals, which increases the metal content of the form, the complexity of its manufacture and complicates operation.

Кроме того, в процессе эксплуатации происходит деформация, износ уплотнения, что снижает степень герметичности формы.In addition, during operation, deformation and wear of the seal occur, which reduces the degree of tightness of the form.

Наиболее близкой к предлагаемой является форма для изготовления центрифугированных трубчатых изделий из бетонных смесей, содержащая полуформы с фланцами, полое эластичное уплотнения и замковые соединения [2].Closest to the proposed one is a mold for the manufacture of centrifuged tubular products from concrete mixtures, containing half-molds with flanges, hollow elastic seals and lock joints [2].

Недостатком известной формы является быстрый износ уплотнения. 30A disadvantage of the known form is the rapid wear of the seal. thirty

Цель изобретения - повышение герметичности .The purpose of the invention is to increase the tightness.

Указанная цель достигается тем, что форма для изготовления центрифугированных трубчатых изделий из бетонных смесей, содержащая полуформы с продольными фланцами, контактирующими друг с другом посредством полого эластичного уплотнения, и замковые соединения, снаржена соединенным с полостью эластичного уплотнения сильфоном в виде закрепленного на одном из торцов формы корпуса с гофрированной оболочкой и контактирующего с последней радиально-подвижного пригруза.This goal is achieved by the fact that the mold for the manufacture of centrifuged tubular products from concrete mixtures, containing half-molds with longitudinal flanges in contact with each other through a hollow elastic seal, and locking joints, equipped with a bellows connected to the cavity of the elastic seal in the form of a mold fixed to one of the ends corrugated shells and in contact with the last radially movable load.

На фиг. 1 изображена предлагаемая форма, общий вид; на фиг. 2 разрез А-А на фиг. 1; на фиг,. 3 система уплотнения.In FIG. 1 shows the proposed form, General view; in FIG. 2, section AA in FIG. 1; on fig. 3 sealing system.

Форма для изготовления центрифугированных трубчатых изделий из бетонных смесей содержит две полу.формы 1 и 2 с продольными фланцами 3 и 4, полое эластичное уплотнение 5, замковые соединения 6, сильфоны 7, выполненные в виде корпуса 8 с гофрированной оболочкой 9 и пригруза 10, перемещающегося под действием центрифугированных сил.A mold for the manufacture of centrifuged tubular products from concrete mixtures contains two semi-molds 1 and 2 with longitudinal flanges 3 and 4, a hollow elastic seal 5, locking joints 6, bellows 7, made in the form of a housing 8 with a corrugated shell 9 and a load 10 moving under the action of centrifuged forces.

Уплотнения 5 представляют собой полые по. всей длине и ограниченные на одном торце эластичные прокладки, соединенные На другом» конце с сильфонами 7.Seals 5 are hollow. the entire length and elastic gaskets bounded at one end and connected at the other end to bellows 7.

Прокладкг? 5 образуют с сильфонами 7 замкнутую систему, заполненную ясид-» костью.Gasket? 5 form with a bellows 7 a closed system filled with yasid bone.

Предлагаемое устройство работает следующим образом.The proposed device operates as follows.

После укладки арматурного каркаса Ю в нижнюю полуформу 1, устанавливают полуформу 2 и закрепляют замковыми соединениями б.After laying the reinforcing cage Yu in the lower half-mold 1, install the half-mold 2 and fix it with lock joints b.

Форму, подготовленную таким образом, устанавливают в центрифугу. При вра- ^5 щении формы пригруэ. 10 сильфонов 7 под действием центробежных сил перемещается, изменяя объем сильфона. При этом давление в системе сильфон-эластичная прокладка возрастает, эластич-Lg ная прокладка деформируется в поперечном сечении, обеспечивая герметичность стыка полуформ. ,The mold prepared in this way is set in a centrifuge. When rotating ^ 5 the shape of the grouse. 10 bellows 7 under the action of centrifugal forces moves, changing the volume of the bellows. In this case, the pressure in the bellows – elastic gasket system increases, and the elastic – Lg gasket is deformed in the cross section, ensuring the tightness of the joint of the half-molds. ,

При подобной конструкции формы требуется меньшее количество замковый-, соединений, чем у известной, так как ' эластичная прокладка деформируется таким образом, что компенсирует возможные неравномерности стыка полуформ. Сокращение количества замковых соединений уменьшает металлоемкость *0 формы, трудоемкость ее изготовления, облегчает эксплуатацию.With such a design of the mold, fewer locking joints are required than with the known one, since the elastic gasket is deformed in such a way that compensates for the possible unevenness of the joint of the half-molds. Reducing the number of castle joints reduces the metal * 0 form, the complexity of its manufacture, facilitates operation.

Выполнение уплотнения предлагав- * мым образом позволяет повысить степень герметичности формы и сохранять ее постоянной в процессе эксплуатации .The implementation of the seal in the proposed way * allows to increase the degree of tightness of the mold and keep it constant during operation.

Claims

The invention relates to the manufacture of tubular products from concrete mixtures by centrifuging. Split molds are known for making centrifuged products containing half-molds with longitudinal flanges, gaskets in the form of elastic gaskets, and locking joints 1. A disadvantage of the known form is the presence of a large number of locking joints made in the form of wedge elements to ensure uniform compression of the seals, which increases the metal intensity of the mold , the complexity of its manufacture and complicates the operation. In addition, during operation, deformation and compaction wear occur, which reduces the degree of tightness of the form. Closest to the present invention is a mold for the manufacture of centrifuged tubular concrete products containing half-molds with flanges, elastically hollow seals and locking joints 2 A disadvantage of the known shape is rapid seal wear. The purpose of the invention is to improve the tightness. This goal is achieved by the fact that the form for AND preparing centrifuged tubular concrete products, comprising half-molds with longitudinal flanges in contact with each other by means of a hollow elastic seal, and locking joints, is provided with a bellows connected to the cavity of the elastic seal and attached to one of the ends Forl "body with a corrugated sheath and in contact with the last radially movable weights. FIG. 1 shows the proposed form, the overall appearance; in fig. 2, section A-A in FIG. one; in fig. 3 sealing system. The mold for the manufacture of centrifuged tubular concrete products contains two half-molds 1 and 2 with longitudinal flanges 3 and 4, a hollow elastic seal 5, locking, connections b, silos 7, made in the form of a body 8 with a corrugated sheath 9 and a weights 10 moving under by centrifuged force. Seals 5 are hollow in. full length and limited at one end of the elastic pads connected at the other end with the bellows 7. The gaskets 5 form with the bellows 7 a closed system filled with liquid. The proposed device works as follows. After placing the reinforcement cage in the lower half-mold 1, install the half-mold 2 and 3-fasteners with lock joints b. The form prepared in this way is installed in the derifuge. When rotating the fork 10 bellows 7 under the action of centrifugal forces are moved, changing the volume of the bellows. At the same time, the pressure in the bellows-elastic system of the gasket increases, the elastic of the gasket is deformed in cross section, ensuring the tightness of the joint of the half-form. . With this design, the shape requires a smaller amount of lock & connections than the known ones, since the elastic gasket is deformed in such a way that it compensates for possible non-uniformity of the junction of the half-molds. Reducing the number of lock joints reduces the metal intensity of the mold, the laboriousness of its manufacture, and facilitates operation. Performing the seal in the proposed way allows to increase the degree of tightness of the mold and keep it constant during operation. Form of the Invention A mold for the manufacture of centrifuged tubular concrete products, comprising half-molds with longitudinal flanges in contact with each other by means of a hollow elastic seal, and locking joints, characterized in that it is provided with a bellows connected to the cavity of the elastic seal. in the form of a hull form with a corrugated sheath fixed on one of the ends and in contact with the last radial-mobile load. Sources of information: BQ taken into consideration in the examination 1. Authorship certificate of the USSR 710809, cl. B 28 B 21/80, 1976.

2. USSR author's certificate number 650821, cl. B 28 B 21/80, 1977.

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