RU171310U1 - Connecting device for high-strength wire ends on formwork lines - Google Patents

Abstract

The connecting device for the ends of high-strength wire on the formless molding lines belongs to the field of production of building products and structures and can be used on the formless molding lines of reinforced concrete structures to connect the ends of the prestressed high-strength wire of unmeasured length. The connecting device for high-strength wire on the formless molding lines contains a housing ( 1), made in the form of a cylinder with holes (2) from each end (3) for skipping Niya the coupling of high-wire (4). Grooves (5) are made in the housing, in which devices for fixing high-strength wire (6) are installed in the experimental model of inventive collets. The grooves (5) and the holes (2) are made from the ends (3) of the housing (1) coaxially (in one longitudinal plane). The grooves (5) have geometric dimensions corresponding to the sizes of the devices for fixing high-strength wire (6) installed in them — inventory collets. The technical problems of the proposed utility model are the creation of a connecting device for high-strength wire on formless molding lines, ensuring alignment, reliability and safety of high-strength joints wire on formwork molding lines, reduction of high-strength wire waste and compliance with formwork technology reinforced concrete structures, expanding the arsenal of means of a similar purpose - devices that provide the above parameters. The technical results of the proposed solution are the elimination of distortions in the process of tensioning high-strength wire, the elimination of displacement of high-strength wire relative to the housing, increasing the reliability and safety of connecting the ends of high-strength wire on formless molding lines, implementation of a technical problem, 4 ill.

Description

The utility model relates to the field of production of building products and structures and can be used on the formless molding lines of reinforced concrete structures to connect the ends of a prestressed high-strength wire of unmeasured length.

A device for joining a flexible reinforcement containing pads with a profiled working surface, while the pads are made with longitudinal grooves and transverse holes in which the wedge inserts are located. [SU 478102, E04C5 / 12, publ. 07/25/1975] The disadvantages of this device are the lack of reliability and safety due to the fact that the connection is detachable and requires very careful and accurate assembly of the connection.

A joint is known for connecting assembly and work packages of high-strength wire with anchor heads planted at the ends in the manufacture of prestressed reinforced concrete structures on package stands, consisting of two vertically mounted rows of steel anchor bars with anchored heads of single-row wire packets, between which several are passed horizontal steel bars serving as supports for vertical bars.

[SU 139800, E04G21 / 12, E04C5 / 16, F16G11 / 00, publ. 01/01/1961]

The closest in technical essence and the achieved effect is a device for joining a high-strength wire containing anchor heads with one-way upset [SU 126248, E04C5 / 12, B21G3 / 12, E04G21 / 12, F16G11 / 00, publ. 01/01/1960] and bushings with one hole for passing two connected wires, the ends of which serve as supports for anchor heads. [SU 134003, E04G21 / 12, E04C5 / 12, F16G11 / 00, publ. 01/01/1960]

The disadvantages of these analogues are their unreliability and low safety, as well as the difficulty of adhering to the technology in the production of reinforced concrete structures on the formless molding lines of reinforced concrete structures. One of the main criteria for meeting technological requirements (compliance with the design position of the reinforcement and the thickness of the protective layer) in the production of reinforced concrete structures on formwork molding lines is the alignment of the ends of the prestressed high-strength wire, in which the high-strength wire must be located exactly on the guides of the molding machine and pass through the forming equipment without hitting her. For the formation of anchor heads with one-sided upsetting at the ends of a high-strength wire, special equipment for heading is necessary, which greatly complicates the process and the assembly and laying time of a high-strength wire, since such heads can be shifted into the sleeve during tensioning of a high-strength wire, slip in it, as well as being cut off from significant pulling forces.

The technical problems of the proposed utility model are the creation of a connecting device for high-strength wire on the formless molding lines, ensuring coaxiality, reliability and safety of connecting the high-strength wire on the formless molding lines, reducing waste of high-strength wire and observing the technology of formless molding of reinforced concrete structures, expanding the arsenal of devices for a similar purpose - devices providing the above parameters.

The technical results of the proposed solution are the elimination of distortions in the process of tensioning high-strength wire, the exclusion of displacement of high-strength wire relative to the housing, improving the reliability and safety of connecting the ends of high-strength wire on the formless molding lines, the implementation of the technical problem.

The specified technical result is achieved by the fact that in the connecting device for high-strength wire on formwork molding lines comprising a housing with holes, in which there are installed devices for fixing high-strength wire at the ends, according to the claimed utility model, grooves and holes are coaxially made at the ends of the housing, while the grooves have geometric dimensions corresponding to the sizes of the devices installed in them for fixing high-strength wire.

Due to the location of the holes and grooves in the housing coaxially (in one longitudinal plane) in mutually opposite directions, the fastening of the high-strength wire on the molding track eliminates its distortions in the process of significant tension, which ensures reliable connection of the ends of the high-strength wire on the formless molding lines. Grooves having geometric dimensions corresponding to the dimensions of the devices for fixing high-strength wire installed in them exclude horizontal or vertical displacement with misalignment, distortions relative to the housing and, as a result, slipping and possible cutting of the high-strength wire at the junction of the latter with the fixing device high-strength wire, which, in general, ensures the reliability of the connection of the ends of the high-strength wire on the formless molding lines.

The connecting device for high-strength wire on formwork molding lines, additionally, due to the use of a housing with devices for fixing high-strength wire installed in the slots, protects workers from injuries in the event of slipping of inventory collets during the tensioning of high-strength wire.

The connecting device for high-strength wire on formwork molding lines can be located both in the middle of the span and at the end of the molding track, which allows to reduce waste and losses of high-strength wire in production by connecting the ends of high-strength wire and using residues of high-strength wire not exceeding the length of the line with stops .

The alignment of the connected high-strength wires is the main technological requirement (compliance with the design position of the reinforcement and the thickness of the protective layer), as well as the technical requirement (high-strength wire must be located exactly on the guides of the molding machine and pass through the forming tool without touching it).

A connecting device for high-strength wire on formwork lines is illustrated by drawings, where in FIG. 1 shows a connecting device for the ends of a high-strength wire on a formless molding line, a sectional side view, FIG. 2 is a sectional top view, in FIG. 3 is a sectional end view, in FIG. 4 - a device for fixing a high-strength wire at the ends in a section.

The connecting device for high-strength wire on the formless molding lines includes a housing 1 (Fig. 1, 2), made in the form of a cylinder with holes 2 from each end 3 to pass the ends of the connected high-strength wire 4 (Fig. 2, 3, 4). In the housing, grooves 5 are made (Figs. 1, 2, 3), in which devices for fixing high-strength wire 6 are installed (Figs. 1, 2). In the experimental model, inventory collets are used as a device for fixing high-strength wire (Fig. 4) or other similar devices can be used. The grooves 5 (Fig. 1, 2) and the holes 2 are made from the ends 3 of the housing 1 coaxially (in one longitudinal plane), The grooves 5 have geometric dimensions corresponding to the sizes of the devices for fixing high-strength wire 6 installed in them (Fig. 1, 2) - inventory collets (Fig. 4) or other similar devices. Devices for fixing high-strength wire 6 (Fig. 1, 2)) - inventory collet (Fig. 4) consists of a housing 7, a nut 8, a spring 9, a sleeve 10, wedges 11, a fixing ring of wedges 12, holes 13 for high-strength wire 4 .

A connecting device for high-strength wire 6 on formwork molding lines is used in production as follows: excess high-strength wire 4 remaining from the previous molding (exceeding the length of the molding track) is fixed in stops using a high-strength wire fixing device 6, for example, an inventory collet at the beginning of the forming paths and laid out on the molding track in the same way as high-strength wire of measured length. Then the ends of the high-strength wire 4 are passed through the holes 2 located at the ends 3 of the housing 1. The ends of the high-strength wire 4 are passed into the holes 13 of the inventory collets (Fig. 4). Next, tighten the nuts 8 of the inventory collets, while the wedges 11 of the inventory collets under the action of the spring 9 securely clamp the ends of the high-strength wire 4. The inventory collets themselves are installed in the grooves 5 of the housing 1. Depending on the length of the remnants of the high-strength wire 4, a connecting device for high-strength wire on the formwork lines molding can be installed in the middle or at the end of the molding track. Next, the high-strength wire 4 is tensioned to the design voltage value, followed by the formation of reinforced concrete products.

On formless molding lines, high-strength wire of only measured length corresponding to the length of the molding track is used. As a result of this, from each coil of high-strength wire, residues are formed that cannot be used for their intended purpose. Waste is about 7%. The use of the inventive device allows the use of the remains of high-strength wire and, thereby, reduce the cost of the production of reinforced concrete structures on formwork molding lines.

Claims (1)

A connecting device for high-strength wire on formwork molding lines, comprising a housing with holes, in which devices for fixing high-strength wire at the ends are installed, characterized in that grooves and holes are coaxially made at the ends of the housing, while the grooves have geometric dimensions corresponding to the dimensions set in them devices for fixing high-strength wire.

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