RU193534U1 - FASTENING DEVICE FOR MULTI-ORDER CABLE - Google Patents

Abstract

The utility model relates to the field of construction, namely to supporting metal cables, and can in particular be used to secure cable-stayed cables or prestressed cables. The mounting device comprises a mounting block (1) having a front side (2) and a rear side (3) and a channel (4) passing between them, arranged to accommodate strands (5) of a multi-strand cable (8) fixed to the rear side (3) the mounting block (1), and the fixing element (6), according to the utility model, the channel (4) is conical, beveled to the rear side (3) of the block (1), and the fixing element (6) has the shape of a double-sided wedge with a longitudinal a groove (7), and the fixing element (6) is placed between the strands (5) of the fluffy multi-strand about a cable (8) fixed in the channel (4) from the rear side (3) of the mounting block (1), and the central strand (9) is placed in the longitudinal groove (7) of the fixing element (6), while the strands (5) of multi-strand ropes (8) are combined at the end of the fixing element (6) on the front side (2) of the mounting block (1) with a compression ring (10). The reliability of anchoring the end sections of the strands of the multi-strand cable is increased due to an increase in the friction forces between the cable strands and the channel walls on the one hand, and the fixing element on the other hand, as a result of which the friction area is increased, as well as by ensuring comprehensive compression of the locking element and comprehensive compression of the strands a cable between the walls of the channel and the fixing element. 1 s.p. f-ly, 5 ill.

Description

The utility model relates to the field of construction, namely to supporting metal cables, and can in particular be used to secure cable-stayed cables or prestressed cables.

A known anchor device for fixing prestressed reinforcing composite rods, consisting of three separate liners, folded forming a truncated cone with a central through hole, and a crimp sleeve with a hole in the form of a reverse cone; three separate liners are joined at the ends by crimping rings, and on the crimping sleeve an emphasis is made in the form of a metal ring, RU 176504 U1, publ. 01/22/2018. Inserts are collected directly on the reinforcing bar and fixed with crimp rings; this whole structure is pulled through the hole in the crimp sleeve where it is jammed. The traction device is fixed to the stop on the crimp sleeve, the reinforcing bar is directly tensioned, and the bushings in the crimp sleeve are further jammed.

This technical solution is characterized by low reliability of anchoring the end sections of the reinforcing bar, due to the fact that the friction forces between the contacting bodies are low, due to the location of the cable inside the fixing element, while the friction area is limited only by the outer side of the bar. The low reliability of anchoring the end sections of the reinforcing bar is also due to the fact that the compression of the bar occurs only from its outer side.

A mounting device for a multi-strand cable is known, comprising a mounting unit and a fixing element, the mounting unit having front and rear sides, and a channel extending between them, arranged to accommodate strands of a fixed multi-strand cable therein; end sections of strands of cable are fixed on the front and / or rear side of the mounting block in the chambers; open sections of strands protruding from the fastener are filled with protective material in the area of fastening to protect against corrosion. Each channel has a cylindrical portion near the rear side of the mounting block and a tapered portion that is tapered toward the front side of the block. The locking element is made in the form of a conical clamp placed in the conical part of the channel to capture a metal strand; the clamp has a cylindrical hole inside for receiving the strand and consists of many sectors fastened by a ring inserted into the annular groove located near the wide end of the clamp, RU 2566882 C2, publ. 10/27/2015. When installing the cable, its strands are inserted into the corresponding channels with conical clamps, a tensile force is created by gripping the parts of the strands protruding from the front face of the mounting block, their tension with the drive and pushing the clamps into the channels. After turning off the drive, the clamps lock the strands in the channels.

This technical solution was made as a prototype of this utility model.

The disadvantage of the prototype is the low reliability of the anchoring of the end sections of the multi-strand cable, due to the fact that the friction forces between the contacting bodies are low, due to the location of the cable inside the locking element, while the friction area is limited only by the outer side of the cable. The low reliability of anchoring the end sections of the multi-strand cable is also due to the fact that the cable is crimped only from the outside of the cable.

The objective of this utility model is to increase the reliability of anchoring the end sections of strands of a multi-strand cable by increasing the friction between the strands of the cable and the surfaces in contact with them, due to the placement of the locking element inside the fluffed cable, as well as by providing comprehensive compression of the locking element and comprehensive compression of the cable strands.

The problem is solved due to the fact that in the mounting device for a multi-strand cable containing a mounting unit and a fixing element, and the mounting unit has front and rear sides and a channel passing between them, configured to accommodate strands of multi-strand cable mounted on the rear side the mounting block, according to the utility model, the channel is cone-shaped, the narrow part of which is located on the rear side of the block, and the fixing element has the shape of a two-sided wedge with a longitudinal groove, m retaining element is arranged between the strands fluffy mnogopryadnogo rope fastened in the channel from the rear side of the fastening unit, and the central strand is placed in the longitudinal groove of the fixing member, the strands are combined mnogopryadnogo rope end fixing member at a front side of the holding block ferrule; the channel on the inside can be made with ring-shaped recesses, the diameter of which increases stepwise from the rear side to the front side of the block.

The implementation of the distinguishing features of the utility model, in conjunction with previously known features, provides a technical result consisting in ensuring high reliability of anchoring of the end sections of the multi-strand cable, by increasing friction between the strands of the cable and the surfaces in contact with them, as well as by comprehensively compressing the strands of the cable.

Due to the implementation of the channel, in which the strands of the fluffy cable are placed, cone-shaped, beveled to the rear side of the block, the placement of the fixing element in the form of a bilateral wedge inside the fluffed cable, the cable strands on one side come in contact with the channel walls and, on the other hand, with the fixing element. The friction area is both the external and internal sides of the cable strands, thereby increasing the friction area.

Due to the implementation of the locking element with a longitudinal groove, it is possible to put on the locking element on the central strand of the cable and placing the locking element between the strands of the fluffy cable. By placing the locking element inside the cable between its strands and combining the strands at the end of the fixing element with a crimp ring, comprehensive compression of the locking element is achieved, and when the cable is tensioned and comprehensive compression of its locks between the channel walls and the fixing element is achieved. As a result, the reliability of anchoring the end sections of the multi-strand cable is increased.

Due to the implementation of the channel with ring-shaped recesses on the inner side, the possibility of the extension of the cable from the block is prevented, which further increases the reliability of anchoring.

The essence of the utility model is illustrated by drawings, which depict:

in FIG. 1 - mounting device for multi-strand cable in the context;

in FIG. 2 - fixing element;

in FIG. 3 - mounting block in the context, in a perspective view;

in FIG. 4 - mounting device in the process of placing the locking element between the strands of the cable;

in FIG. 5 - mounting device in the process of jamming the cable with a locking element in the mounting block.

The mounting device for the multi-strand cable 8 includes a mounting unit 1 and a fixing element 6. The mounting unit 1 has a front side 2 and a rear side 3 and a channel 4 passing between them, in which the strands 5 of the multi-strand cable 8 are located. Channel 4 is cone-shaped, its narrow part is placed on the rear side 3 of block 1. Channel 4 on the inside is mainly made with ring-shaped recesses 11, the diameter of which increases stepwise from the rear side 3 to the front side 2 of block 1, which prevents the possibility of extension of the cable 8 from block 1. The fixing element 6 has the shape of a two-sided wedge with a longitudinal groove 7. The fixing element 6 is placed between the strands 5 of the fluffy multi-strand cable 8, which is fixed in the channel 4 from the rear side 3 of the mounting block 1, when ohm central strand 9 is placed in the longitudinal groove 7 locking member 6. All 5 mnogopryadnogo rope strands 8 are combined at the end of the locking member 6 from the front side 2 of block 1 fixing ferrule 10.

A mounting device for a multi-strand cable is used as follows.

When installing the cable 8, it is inserted into the channel 4 of the block 1. The end of the cable 8 from the front side 2 of the block 1 is fluffed, distributing the strands 5 along the conical channel 4. After that, the locking element 6 is pushed between the strands 5 of the cable 8, placing the central strand 9 in the longitudinal groove 7 of the fixing element 6. The locking element 6 is advanced towards the rear side 3 of the block 1, clamping the strands 5 between the inner walls of the channel 4 and the fixing element 6 as much as possible. This ensures that the locks 5 are jammed and held in the mounting block 1. Thanks to channel 4, in which the strands 5 of the fluffy cable 8 are placed, conical, beveled to the rear side 3 of the block 1, and the placement of the fixing element 6, made in the form of a two-sided wedge, inside the channel 4 between the strands 5 of the fluffy cable 8, the friction area is also external, and the inner side of all the strands 5 of the cable 8, thereby increasing the friction area, and, consequently, the friction force.

Since ring-shaped recesses 11 are made on the inner surface of the conical channel 4, the diameter of which increases stepwise from the rear side 3 to the front side 2 of the unit 1, reliable provision is made for the strands 5 of the cable 8 with the inner surface of the channel 4, which prevents their longitudinal movement under operating conditions and possible external influences. This practically eliminates the possibility of extending the strands 5 of the cable 8. The central strand 9 of the cable 8 is securely fixed in the longitudinal groove 7 of the fixing element 6. After jamming the strands 5 of the cable 8, they are assembled together and fixed on the front side 2 of the block 1 with a crimping ring 10. This eliminates the ability to fully extend the locking element 6 from the block 1.

The end of the cable 8 is fixed from the rear side 3 of the mounting block 1, for example, in concrete, laying it in the formwork, which is filled with a given amount of concrete mixture. A tension force is applied to the cable 8, which is transmitted to the formwork. After the concrete mixture has hardened, the tension is removed, the formwork is removed, while the tension of the cable 8 is transmitted to block 1, which in turn transfers the tension to the concrete.

Claims (2)

1. A fastening device for a multi-strand cable, comprising a mounting unit having a front side and a rear side and a channel extending between them, configured to receive strands of a multi-strand cable fixed thereto from a rear side of the mounting block, and a fixing element, characterized in that the channel made conical, the narrow part of which is placed on the rear side of the block, and the locking element has the shape of a two-sided wedge with a longitudinal groove, and the locking element is placed between the strands of fluffy m ogopryadnogo rope fastened in the channel from the rear side of the fastening unit, and the central strand is placed in the longitudinal groove of the fixing member, the strands are combined mnogopryadnogo rope end fixing member at a front side of the holding block ferrule. 2. The mounting device according to claim 1, characterized in that the channel on the inside is made with ring-shaped recesses, the diameter of which increases stepwise from the rear side to the front side of the mounting block.

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