SU1238968A1 - Mould for making concrete articles - Google Patents

Description

This invention relates to the manufacture of precast concrete and reinforced concrete products.

The purpose of the invention is to increase reliability.

FIG. 1 shows schematically a mold for making sleepers, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 shows a section B-B in FIG. 2

The form for the manufacture of concrete products consists of a support frame with a rigidly fixed matrix 1, divided by partitions 2 into molding compartments, hollow cores-3 and fixed 4 and movable 5 stops under clamps b with wave wedges 7, in which the reinforcement package is fixed.

Each of the Z partitions is made with a fixing device containing spring-loaded springs 9 springs 10 placed in the guide sleeves 8, connected by means of the pull-rod 11 with the guide element 12 moving vertically.

The guide sleeves 8 are mounted on the brackets 13 of the partition 2 pivotally with the possibility of rotation around the axis of the fingers 14.

An elastic insert 15 is placed inside the partition 2, and the partition 2 is made with slots under the vertical rows of the jet 16 of the armature and with a hole under the guide member 12. The guide member 12 is made with a groove 17, for pins 18 fixed one above another on the partition 2.

Tubes 11 are connected to the guide member pivotally with finger 19.

A hinge 20 is fixed on the partition 2 between the rods 11. The movable support 5 of the form is equipped with a screw mechanism 21 for moving.

The operation with the proposed form is as follows.

After cleaning and lubrication, the form is fed to the post of laying the reinforcing string package, where the latter, fixed with the help of wave wedges 7 of the cage 6, is installed in the form so that the cages 6 are placed in fixed 4 and mobile 5 stops respectively (technological posts are not shown) . Then in

dividing partitions 2 are installed in the form, limiting the length of the manufactured splinter. The partitions 2 are installed in such a way that each of the vertical rows of the strings of the package of the reinforcement of the string pack enters the corresponding slot. During the installation of the partition 2, the guide element 12 slides down vertically inside the opening of the partition, taking with it the rods 11, which

push the rods 10 into the corresponding socket matrix 1 and at the same time compress the spring 9.

As a result of the downward movement of the guide element 12, the septum is fixed on the mold.

After the installation of the partitions 2, the form is supplied to the voltage posts, where the movement of the movable stop 5 with the help of the screw mechanism 21 produces the tension of the reinforcement package. At the end of tensioning the reinforcement, the mold is fed to the post of laying and vibrating the concrete mix and then to the post of final vibratory compaction, where vibro-stamps suspended on the frame are placed on the newly laid concrete mix and additional compaction is made (vibration load not shown). In the final stage of additional compaction, the vibration gates are lowered by the supporting frame, on which spring-loaded gripping hooks are mounted, which are in the process of lowering

the frames of the vibration stamps are engaged with the loops 20 of all partitions 2.

At the end of the seal, the frame of the cargo is lifted by a crane, and in the process of lifting it initially lifts the guide element 12. During its lifting, the finger 19 rises, dragging the rods 11 behind it, which release the springs 9, and the latter push the rods 10 out of corresponding nests of the matrix, which is done by unlocking the partition 2.

In the process of further raising the frame of the vibration stamps, all partitions 2 are removed from the body of the molded weave of the sleepers, after which the vibration reliefs are lifted, and the released form with the product is transferred to the heat treatment, stripping, preparation of the molds (cleaning and lubrication), and the work cycle is repeated.

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Compiled by S. Kvasha

Editor O. GolovachTechred I. VeresKorrektor L. Patay

Order 3338/12 Circulation 555Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

A FORM FOR MAKING PRODUCTS FROM CONCRETE MIXTURES, comprising a support frame with a matrix rigidly fixed on it with seat slots, a composite partition with guide sleeves and a fixture in the form of a vertically movable guide element connected by articulated rods to rods placed in guide sleeves nests, characterized in that, in order to increase reliability, each partition is provided with horizontal pins located on its vertical axis one above the other, placed in the groove formed in the guide element AND connecting the partitions of the partition, the guide bushings being made rotatable in a vertical plane, and the rods are spring-loaded relative to the latter. ye sae qo so o 00