SU755979A1 - Panel form for erecting concrete wall - Google Patents

Description

The invention relates to the field of construction and can be used in the construction of walls of monolithic concrete.

Known shield formwork for the construction of monolithic walls, containing formwork shields and articulated lever formwork [1].

The formwork design provides for the use of manual labor during installation and alignment of formwork and crane equipment during the demolding.

The disadvantage of formwork is the high complexity of installation work.

Also known is panel formwork, which includes formwork panels, screeds, a device for alignment and screw electrojacks [2].

The disadvantage of this formwork is the lack of mechanization in the stripping work.

The aim of the invention is the mechanization of stripping.

The goal is achieved by the fact that in shield formwork for the construction of concrete walls, including outer and inner shields with screw jacks and a device for alignment, each electric jack

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equipped with a vertical bar mounted on its screw with a pin, each upper screed is made in the form of a lever hinged at one end on the outer shield and interacting with the other ₅ end of the inner shield with the upper part of the rod, and pivoting levers interacting with rod pins having cables in the lower part connected through a system of blocks

with bottom screed wedges. In addition, the bottom screed has grooves for installing shields.

FIG. 1 shows the formwork in axonometric projection, general view; in fig. 2 - formwork, side view; in fig. 3 - the same at the time of stripping.

The formwork consists of an outer shield 1, an inner shield 2, which are equipped with electro-jacks 3 with adjusting screws 20, 4 rigidly connected to the rods 5.

Shields are equipped with guide supports 6 for rods. Rods by means of blocks

7 and cables 8 are connected with lever wedges 9 lower shears 10. One of the blocks

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mounted on the rack 11 of the body of the electrojack, and the other is on (feed. The wedges 9 are lever-shaped, with the possibility of the wedges 9 are made lever-shaped with the possibility of rotation around the axis 12. The pins of the 13 rods 5 by means of the hinge-mounted levers 14 on the shield can are equipped with springs 16. The levers 14 are slotted at one end and pivotally connected to the pushers 15, which are placed in the guide supports 17 with the possibility of longitudinal movement. The supports 17 are rigidly fixed to the shields. the pushers are equipped with heels 18 pivotally connected to them. The pivot toe joints with pushers enable the heels with all their surfaces to remain in contact with the products when the shield is inclined. The ends of the rods 5 are located at the handles of the upper locks 19 and can affect of them.

The lower screeds 10 have guide grooves with a distance between them equal to the design thickness of the wall. The lower parts of the shields have slots that are used to install shields in the grooves of the lower screeds. One side of the grooves is inclined, which will make it possible to quickly install the shields and fasten them with wedges. Screeds 10 have holes for fixing them at the design mark. The shields are also equipped with a device for alignment, made in the form of a switch for the weights 20. The brackets 21 are fixed on the corsets of the electric jacks, the fingers of which enter the grooves of the adjusting screws 4 to prevent their rotation.

The action of the formwork is as follows. Previously, at the project elevation, the tie-rods 10 are precisely positioned and fixed, along the guide grooves of which the shuttering boards are inserted with the help of a crane. Sliding along the inclined edges of the grooves, the shields fall into the grooves, which ensures accurate installation. Then the shields are brought to a vertical position by means of electrojacks. After installation, the shields are fixed using wedges 9 and upper screeds 19. After the concrete mix is laid in the formwork and hardened, the stripping is performed, for which electro electrodes 3, regu

The lashing screws 4, which, moving upward, transmit the movement to the rods 5. Before the stripping, the ends of the rods 5 of the inner shield 2 are located at some distance from the arms of the upper screeds 19, and the cables 8 are not tensioned. To tension the cables 8 and reach the pins 13 of the levers 14, the rod 5 moves idle with the creation of a shock force, opening the upper tie 19 and releasing the wedges 9.

Then the pins 13 of the rods 5 reach the arms 14, by means of which the pushers 15 are moved, and under the influence of the force acting along the pushers, through the heel 18, which is supported on the concrete surface of the product being manufactured, tear the formwork from the product. The formwork panels are removed, then the ties 10 are removed. During the return stroke of the rods, under the action of the springs 16, each heel 18 presses against the shield.

Claims (2)

Claim 1. Panel formwork for the erection of a concrete wall, including outer and inner shields with screw jacks, upper and lower screeds with wedges and 25 device for alignment, characterized in that, in order to mechanize stripping, each electrode jack is equipped with a vertically mounted rod with a screw on its screw, each upper screed is made in the form of a lever hinged at one end on the outer panel and interacting with the other end with the upper part of the rod an inner shield, the shields being provided with stripping mechanisms in the form of spring-loaded pushers of 3 lei with supporting heels and pivoting levers that interact with rod pins having cables in the lower part, Connections through the system of blocks with wedges lower screeds. 2. Formwork for η, 1, characterized in that the bottom screed has grooves for the installation of shields,