RU1828892C - Anchor for precast concrete products - Google Patents

Abstract

Use in construction in the manufacture of prestressed concrete structures. SUMMARY OF THE INVENTION: in the anchor, the housing is provided with at least two connecting forks oriented perpendicular to each other, each fork having at least two parallel eyelets with holes aligned therein. In this case, the housing may be provided with at least one protrusion for securing the end or the beginning of the reinforcement thread. 1 wp 9 ill.

Description

The invention relates to construction, namely to the production of prestressed concrete structures.

An object of the invention is to enable it to be connected to other anchors of one reinforced concrete product or to anchors of another product.

In FIG. 1 shows an anchor with right lateral outlets, an end view; in FIG. 2 - the same side view; FIG. 3 - the same, top view; FIG. 4 - en «ery with right lateral front and upper outlets; FIG. 5-too, side view; FIG. 6 - same, top view; FIG. 7 - an anchor with front upper, left lateral outlets and a right lateral protrusion with a conical hole for fastening the initial end of the wound reinforcement; FIG. 8 - the same side view; FIG. 9 - same, top view.

An anchor for precast concrete products consists of a housing 1 with a groove 2 on the side and front surfaces. The front part 3 of the housing 1, enveloped by reinforcement, is rounded, and the rear part of the housing 4 is made flat. The housing 1 is provided with a socket 5. which is inclined towards the base 6 in the direction of its front part 3. The front part 3 of the housing 1 has front outlets 7, in which there are openings 8 located along one axial line. In order to transmit great efforts through the connecting rollers, the holes 8, like the rollers, can have, in addition to a round shape, oval, wedge-shaped and other shapes. The right side of the casing 1 has side outlets 9. in which there are also holes 10. The left side of the casing 1 can have left side outlets 11, in which there are also holes 12. In addition to the right side outlets 9, left 11 and front 7 of the cases 1 An anchor can have top releases 13. And also lower. The anchor housing 1, in addition to outlets, can have a right or left side protrusion 14 with an opening 15 in it for fixing

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nor on the anchor of the beginning of the reinforcement thread. In addition, in the last end anchor for inserting the string of reinforcing threads into the lateral protrusion, before fixing, it must have a groove, i.e. to be with a cut (not shown in the drawing). After the reinforcement thread has been inserted into the opening of the protrusion 14, it is jammed in it by a cone-wedge and the thread itself is cut off.

The internal anchor for prefabricated reinforced concrete products remaining in the concrete makes it possible to produce prestressed reinforced concrete products with high strength, crack resistance and stiffness, since in them the reinforcement, covering the anchor retains a closed tension loop and changes the nature of the transfer of the load from the reinforcement to concrete. at the same time, all threads of the reinforcement are tensioned evenly. The grooves on the back of the housing 1 of the anchor rounded makes it possible to cover the anchor with reinforcement around the circumference of one and a half turns, i.e. 540 ° or more, if necessary, which makes it possible for each thread of reinforcement to work independently in the product, independently, even if one or more threads of the reinforcement bursts, which does not affect the destruction of the product.

The execution of the anchor body 1 with the outlets makes it possible to connect one prestressed reinforced concrete product with another both in the plane and in other directions, avoiding the use of non-tensile embedded parts and the welding operation, which is accompanied by the process of recrystallization of the metal and its irradiation, which is negative affects the property of the metal, and especially its tensile reinforcement.

At the same time, the execution of the anchor body 1 with the lower outlets and the upper outlets makes it possible to connect the upper rows of anchors with the lower ones, avoiding the delamination of prestressed reinforced concrete products by their thickness,

giving it crack resistance and rigidity.

An increase in the number of outlets, in one of any directions, at the anchor body 1 makes it possible to increase the number of working areas of the connecting roller working on a cut, and therefore without increasing the diameter of the roller and the dimensions of the anchor body 1 itself, it is possible

the ability to transfer the body a large load from the tensioned reinforcement. At the same time, an increase in the transmitted load is achieved by changing the working surface of both the roller and the outlet opening itself, giving them a longitudinally oval, wedge-shaped and other shapes.

Outlets on the anchor body, applied in any direction where they are needed, in any quantity and any size, create the possibility of connecting prestressed concrete products in any direction as necessary.

Claims (2)

The claims 1. Anchor for precast concrete products, including a housing with grooves on its surface and with a wedge-shaped socket house from its base a longitudinal section in the form of a parallelogram, characterized in that, in order to enable its connection with other anchors of the same reinforced concrete products or with anchors of another product, the housing is equipped with at least two connecting plugs oriented perpendicular to each other and with different directions relative to each other, with each fork having at least two parallel eyes with holes aligned therein. 2. Anchor according to claim 1, characterized in that the housing is provided with at least with one protrusion to secure the end or beginning of the reinforcement thread.