SU1342744A2 - Mould for making centrifugal articles with symmetrical unround cross-section from concrete mixes - Google Patents

Abstract

The invention relates to the field of construction, namely the production of centrifuged products from precast concrete and reinforced concrete. The goal is to increase productivity. For this, the mold for the manufacture of centrifuged concrete products is provided with a impeller 11 spring-loaded with respect to the ends of the liners with thrust protrusions at its outer end and a blower device in the form of an impeller 15 with a thrust ratchet nut 14 on its hub mounted through axis 18 on one of the caps, with 11 inner-shouldered L-shaped levers 21 in contact with the krypchaty, with weights 20 at their outer ends. When this stubborn ratchet nut 14 of the hub of the impeller 15 is in contact with the thrust protrusions of the cross. The impeller 1 1 is installed on the mold to create an incoming air flow of sufficient force necessary for the sleeve to work with the impeller. When the mold 1 rotates, the knuckle 11 mounted on it creates air flow to rotate in the opposite direction of the impeller 15, 2 sludge. (C (L 2/12 S 5 13 15/3 / in rsj Figure 1

Description

11342744

refers to the construction of

The stpa is intended for the manufacture of precast concrete and reinforced concrete buildings and is an improvement of the invention according to the author. St. №1296431. The purpose of the invention is to increase productivity by generating the air flow necessary to rotate the impeller.

FIG. 1 shows a form, a longitudinal section; in fig. 2 shows view A in FIG.

The form for the manufacture of centrifuged products with a symmetrical non-circular cross-section of concrete mixes contains two half-molds 1 and 2, the inner contours of which determine the external shape of the molded product. The half-molds have longitudinal flanges 3 along the connector line with connecting locks 4. The shape is closed with end caps 5 and 6. The cover 6 is made with a central opening for the feeder to pass to load the mold with concrete. In addition, centering recesses 7 are made on it. Between the covers 6 and 5 there are located inserts 8, which by means of frames 9 and release springs 10 are connected to a crosspiece made in the form of an impeller 11. Spring 10 is fastened to insert 8 and a retainer 12 and in order to avoid loading knowledge of the concrete is inserted into the cup 13. The impeller 11 interacts with a stubborn ratchet nut 14, which has stubborn projections. The latter, together with the impeller 15, is mounted on the sleeve 16, which is mounted on bearings 17 on the axis 18 of the impeller 15. To prevent the sleeve 16 from moving in axis 18 and to adjust the contact clearance at the end of the axis 18, a lock nut 19 is installed in which there is a groove for free rotation bushings 16. The impeller 11 and the stop ratchet nut 10 are in contact with the aid of spring-loaded weights 20 moving along two double-arm L-shaped levers 21.

The form works as follows. After assembling and installing the mold on the belts, the moldable mixture is loaded through the hole in the lid 6 and the centrifugation process begins. When the form rotates, the impeller 11 mounted on it creates an air flow of sufficient force to rotate in

the opposite side of the impeller 15 together with the sleeve 16 mounted on bearings 17 and mounted on it a resistant ratchet nut 14 having thrust protrusions contacting

with the corresponding protrusions of the impeller 11. The rotation of the mold with the impeller 11 and the impeller 15 occurs in opposite directions. When the form rotates, the impeller 11 is constantly affected by the force that presses it to the thrust ratchet nut 14 by levers 21 due to the centrifugal force acting on the spring-loaded weights 20.

The presence of the thrust nut 14 thrust projections and of the impeller 11, in contact with the thrust ratchet nut 14 of the corresponding protrusions B1.1, causes shocks transmitted through

impeller 11, frames 9 on inserts 8.

Claims (1)

Invention Formula The form for the manufacture of centrifuged products with a symmetrical non-circular cross-section of concrete mixes according to ed. St. No. 1296431, characterized in that, in order to increase productivity, the spider is made in the form of an impeller. bid / 15 sixteen eleven 21 ten