RU170990U9 - DEVICE FOR CONNECTING REINFORCED RODS - Google Patents

Abstract

The utility model relates to the manufacture of reinforcing products for reinforced concrete structures and can be used to form a connection of two reinforcing bars in one node, as well as connecting separate bars along the length with bypass ends, subsequently subjected to prestressing.

The purpose of the proposed utility model is to create a rigid, equal-strength connection of the reinforcement with the preservation of its mechanical and deforming properties and the removal of restrictions on the diameter and profile of the joined rods, as well as ensuring the completion of installation of the reinforcement without involving additional workers.

The essence of the utility model lies in the fact that the device for connecting reinforcing bars, including connecting elements with a tightening, while the connecting elements are made in the form of upper and lower mounting strips with an internal corrugated surface, fixing the free movement of the reinforcing bars, and with connecting grooves of the rail type a wedge located on both sides of the planks, fixing the planks by a locking pin.

Description

The utility model relates to the manufacture of reinforcing products for reinforced concrete structures and can be used to form a connection of two reinforcing bars in one node, as well as connecting separate bars along the length with bypass ends, subsequently subjected to prestressing.

Known joint reinforcing bars for welding type "C" (GOST 14098-91 "Connection of welded reinforcement and embedded products of reinforced concrete structures. Types, structures and sizes." - M .: USSR State Committee for Construction and Investments, 1992 (tab. 4- 17)). Joints of this type require appropriate welding equipment and a welder of the appropriate qualification, which increases the complexity, mechanical intensity and cost of construction and installation works. As a result of heating, the mechanical properties of the steel are lost, which limits the use of this type of joint for reinforcing steels of a class above A400, as well as thermally hardened or hardened by exhaust hoods. These connections are not technologically applicable for cable-type fittings.

The closest analogue is the connection of reinforcing bars using couplings with tightening locknuts or filling gaps with epoxy resin, proposed by the Japanese company Sumitomo (KV Mikhailov, GI Berdichevsky, Yu.S. Volkov and others. Pre-stressed reinforced concrete (Based on materials from the IX FIP Congress) - M .: Stroyizdat, 1986 (p. 42-44)) (3).

However, this type of connection is limited in use only for reinforcing bars with a special screw profile, it requires the presence of torque wrenches and special hydraulic devices for injecting epoxy resin under pressure into the gaps of the threaded connection.

The objective of the proposed connection (rail-wedge) of reinforcing bars is to create a rigid, equal-strength connection of the reinforcement with the preservation of its mechanical and deforming properties and the removal of restrictions on the diameter and profile of the joined rods, as well as ensuring the installation of the reinforcement without involving additional workers.

The problem is solved by connecting the reinforcing bars by means of a quick disconnect tablet connection barrel-shaped profile.

The essence of the utility model lies in the fact that the device for connecting reinforcing bars, including connecting elements with a tightening, while the connecting elements are made in the form of upper and lower mounting strips with an internal corrugated surface, fixing the free movement of the reinforcing bars, and with connecting grooves of the rail type a wedge located on both sides of the planks, fixing the planks by a locking pin.

The technical result is as follows: the use of the proposed utility model in the form of a quick-disconnect tablet connection of a barrel-shaped profile will solve the problem of connecting reinforcing bars while maintaining the physical properties of reinforcing steel, as well as provide low cost of joint and technological simplicity, makes it possible to expand the scope of application of bar reinforcement in prestressed reinforced concrete elements. The application of the proposed device will increase the speed of reinforcing work, especially in cases where a rigid (such as welded) connection of the reinforcement is necessary, and reduce the costs of construction organizations on the wages of workers (in particular the welder) and the purchase of additional equipment.

The proposed device for connecting reinforcing bars in the form of a quick disconnect tablet connection barrel-shaped profile is illustrated by drawings, where on

FIG. 1 shows a frontal top view of a quick-release tablet connection of a barrel-shaped profile;

FIG. 2 shows a bottom view of a quick-release tablet connection of a barrel-shaped profile;

FIG. 3 shows a front view of a quick-release tablet connection of a barrel-shaped profile;

FIG. 4 - upper mounting plate;

FIG. 5 - lower mounting plate;

FIG. 6 - section 1-1;

FIG. 7 - section 2-2.

The device consists of upper 1 and lower 2 fixing strips with lengths from 3d to 60d, where d is the diameter of the joined reinforcing bars 3. The inner surface (walls) of 4 fixing strips 1, 2 is profiled. The upper 1 and lower 2 fastening strips are connected to each other by means of connecting grooves of the rail-wedge type 5 arranged on both sides of the strips 1, 2 and the locking pin 6, which fix the free movement of the reinforcing bars 3.

The operation of the device is to transfer the load from one of the abutting reinforcing bars 3 to another by means of a quick-disconnect tablet connection of a barrel-shaped profile consisting of upper 1 and lower 2 fastening plates interconnected using a rail connection 5 and a pin 6. Longitudinal forces acting in the reinforcing bars rods 3, are perceived by frictional forces on the contact surfaces, and through the corrugated surface along the profile of reinforcement 3 are transferred to the walls 4 of the mounting strips 1, 2. A significant part of the stresses It is given due to manifestation of the effect of jamming the reinforcing bar 3 between the walls 4 mounting brackets 1, 2 of the quick Tablet compound domed profile. The profiled inner surface (walls) of the 4 fastening bars 1, 2 and the corrugated surface of the reinforcing bars 3 excludes the possibility of free movement at the contact points of the joined reinforcing bars 3 and the fastening bars 1, 2.

The exclusion of possible movements of the reinforcing bars 3 is provided by the rail connection 5 and the locking element in the form of a pin 6. Equal strength of the connection and the reinforcing bars 3 is provided by the selection of the cross-sectional area of the quick disconnect tablet connection of the barrel-shaped profile.

Claims (1)

A device for connecting reinforcing bars, including connecting elements with a puff, characterized in that the connecting elements are made in the form of upper and lower mounting plates with an internal grooved surface that fixes the free movement of the reinforcing bars, and with connecting grooves of the wedge type, located on both sides strips, fixing the strips is carried out by a locking pin.

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