SU90763A1 - Device for making reinforced concrete sleeper beds - Google Patents

Description

A feature of the proposed device is the use of a sliding, two-piece, core and installed in the corners of the shape of metal tubes mounted on rods fixed on rigid bars connected to the core. This embodiment of the device provides the ability to quickly and smoothly transfer voltage from the reinforcement to the concrete.

FIG. 1 shows a device, a plan view; in fig. 2 is a side view and a section along the LA of FIG. one; in fig. 3 is a section along explosives in FIG. one, :

The device consists of a metal stop, perceivable; its force is from pre-stretched reinforcement, a pallet and side shields, and is a metal form in the form of a closed loop, with a stranger at the same time a form for concreting products and an emphasis for receiving efforts from prestressed reinforcement rods.

The metal contour is installed on the turntable frame after removing the side shields. By fixing the end of the reinforcement, the turntable is turned on for rotation around its axis. Together with the frame of the turntable, the metallic contour attached to it rotates, which winds the wire with the required voltage, and the winding speed depends only on the speed of rotation of the table. The strained wire rests on the supports of the metal tubes that are worn on the plugs located in the trunks at the corners of the contour. After the winding is done, the end of it is attached with a bolt clip to the previous winding row, the contour is removed from the pivot steel, and side shields are placed on it for concrete flooring. Upon reaching a concrete strength of 200 kg / cm, stress reinforcement is released. The transfer of prestress from the reinforcement to the concrete is done by bringing the two halves of the circuit together, which are interconnected by two screws in the form

With a close coupling of the halves of the contour, the corner pins loosen and fall out of the trunks and tubes, and the tight fittings, in the form of a continuous string, find support directly in the concrete, thereby creating intensive compression of it. Reliable and simple fixing of tensioned wire in the product allows the use of low grade concrete.

Subject invention

1. A device for the manufacture of reinforced concrete pallets with prestressed reinforcement, which is a metallic form of a closed loop consisting of a core, a pallet and side walls, characterized in that, in order to smoothly transfer the voltage from the reinforcement to the concrete, the core is made of two moving parts connected by screws.

2. A device according to claim 1, characterized in that to hold the reinforcement wound under tension, tubes installed in the corners of the form are used, which are freely attached to the rods fixed to the strips connected to the core.

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