CN215716581U - Extrusion type steel strand anchorage stay cable - Google Patents

Abstract

The utility model discloses an extrusion type steel strand anchor inhaul cable, which relates to the technical field of roads and bridges and comprises an outer conical clamping sleeve, an inner conical sleeve and a sealing cylinder, wherein the outer conical clamping sleeve is sleeved outside a steel strand finished product inhaul cable and fixedly connected with the tail end of an anchoring sleeve; the utility model provides the extrusion type steel strand anchorage cable which has better anchoring and clamping effects, is firmer and more reliable and has better sealing and corrosion resistance performance by additionally arranging the outer conical clamping sleeve and the inner conical sleeve which are used in a matched mode.

Description

Extrusion type steel strand anchorage stay cable

Technical Field

The utility model relates to the technical field of roads and bridges, in particular to an extrusion type steel strand anchor inhaul cable.

Background

Guy cables have long been used in the prestressing industry. Most of bridge and building steel structures mainly adopt three forms of cold casting anchors, hot casting anchors and clip anchor guys, but the anchor heads of the three guys have larger sizes and higher processing cost, so the use is limited. In contrast, the extrusion type inhaul cable has the advantages of small anchor head size and low cost, is applied to the building structures and the bridge engineering at present, solves the problems of large anchor head size and high cost, and still has the following defects: firstly, when the tonnage of the cable body is large, the situation that the steel strand is likely to slide occurs, and the anchoring and clamping effect of the extruded inhaul cable needs to be improved; secondly, after extrusion, the end steel strand is in an exposed state of contacting with air, water or vapor can enter the anchoring sleeve along the gap of the steel wires of the steel strand to corrode the steel strand, so that a better corrosion prevention effect cannot be achieved, and the service condition and the service life of the steel strand are influenced. Therefore, on the basis of the existing extrusion type inhaul cable technology, a reasonable structure for strengthening the anchoring and clamping effect and sealing and corrosion prevention is researched, and product optimization is carried out.

Disclosure of Invention

In order to solve the technical problems in the background art, the utility model provides the extrusion type steel strand anchor inhaul cable which is better in anchoring and clamping effect, firmer and more reliable, and better in sealing and corrosion resistance.

The utility model adopts the following technical scheme: the steel strand finished product inhaul cable comprises a steel strand finished product inhaul cable and two anchoring structures for installing two ends of the steel strand finished product inhaul cable, wherein the steel strand finished product inhaul cable consists of a plurality of single-stranded steel strands, each anchoring structure comprises an anchoring sleeve, an outer conical clamping sleeve, an inner conical sleeve and a sealing cylinder, through holes with the same number as the steel strands are formed in the anchoring sleeves, one ends of PE pipes in the steel strand stripping layers respectively and independently penetrate through the through holes and are tightly extruded with the through holes into a whole, and the front end of each anchoring sleeve is in threaded connection with a sealing end cover; the outer conical clamping sleeve is sleeved outside the steel strand finished product inhaul cable and fixedly connected with the tail end of the anchoring sleeve, the large-caliber end of the inner conical sleeve is sleeved outside the outer conical clamping sleeve and is in threaded connection with the tail end of the anchoring sleeve, and the outer conical clamping sleeve completely penetrates into the inner conical sleeve and is tightly attached to the inner wall of the inner conical sleeve; the sealing sleeve is sleeved outside the steel strand finished product inhaul cable and connected with the small-caliber end of the inner taper sleeve, a sealing pouring material is filled between the steel strand finished product inhaul cable and the sealing sleeve, the tail end of the sealing sleeve and the steel strand finished product inhaul cable are sealed through an O-shaped sealing ring, and the sealing sleeve is arranged on the sealing sleeve through an internal thread of the sealing sleeve.

As an optimized scheme, a gap between the sealing end cover and the anchoring sleeve is filled with sealing casting materials.

As an optimized scheme, the through holes are arranged in the anchoring sleeve in an array mode, and the through holes in the same row are communicated with each other.

As an optimized scheme, spiral ripples are arranged on the inner wall of the through hole.

As an optimized scheme, the sealing sleeve and the outer surface of the steel strand finished product inhaul cable are sealed through a hot cable sleeve.

As an optimized scheme, the sealing castable is epoxy anticorrosive filler.

Compared with the prior art, the utility model has the advantages that: the device adopts the inner conical sleeve and the outer conical clamping sleeve which are used in a matching way, and the gripping and clamping effect of the anchorage device on the steel strand is enhanced through the operation of slotting of the outer conical clamping sleeve, tightening of the inner conical sleeve and contraction and extrusion at the conical matching position; the sealing and corrosion-resistant effect is better by adopting a triple sealing structure that sealing materials are poured into a sealing sleeve, two layers of sealing rings are additionally arranged at the same time, and a heat shrinkable tube is wrapped; spiral corrugations are processed in holes of the steel strand penetrating holes of the anchoring sleeve, so that friction between the steel strand and the anchoring sleeve is increased, and anchoring clamping effect and anti-skid performance of the anchoring sleeve are enhanced.

Drawings

FIG. 1 is a schematic structural view of an extruded steel strand anchor cable according to the present invention;

FIG. 2 is a schematic view of the construction of the anchoring sleeve of the present invention;

FIG. 3 is a cross-sectional view of a through-hole of the present invention;

the cable comprises 1-steel strand finished stay cable, 11-steel strand, 2-anchoring sleeve, 21-through hole, 3-sealing end cover, 4-outer conical clamping sleeve, 5-inner conical sleeve, 6-sealing barrel, 7-sealing casting material, 8-sealing ring, 9-sealing sleeve and 10-hot cable sleeve.

Detailed Description

Hereinafter, in order to facilitate the technical solution of the present invention for those skilled in the art to understand, further description will be made with reference to the accompanying drawings. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, this device includes two anchor structures at steel strand finished product cable 1 and installation steel strand finished product cable 1 both ends, steel strand finished product cable 1 comprises many single strand steel strands 11, anchor structure includes anchor cover 2, outer toper centre gripping cover 4, interior taper sleeve 5 and sealing cylinder 6, set up the through hole 21 the same with 11 roots of steel strand on the anchor cover 2, the one end of PE pipe independently passes through hole 21 separately and tightly fixes an organic whole rather than crowded in single strand steel strand 11 strips, anchor cover 2 front end threaded connection has end cover 3, end cover 3 detains on the anchor cover through threaded connection for the protection lies in the end steel strand cable body of anchor cover 2. The outer conical clamping sleeve 4 is sleeved outside the steel strand finished product inhaul cable 1 and fixedly connected with the tail end of the anchoring sleeve 2, the large-caliber end of the inner conical sleeve 5 is sleeved outside the outer conical clamping sleeve 4 and is in threaded connection with the tail end of the anchoring sleeve 2, the outer conical clamping sleeve 4 completely penetrates into the inner conical sleeve 5 and is tightly attached to the inner wall of the inner conical sleeve 5, the inner conical sleeve 5 is matched with the outer conical clamping sleeve 4 with a groove on the conical surface for use, and the outer conical clamping sleeve 4 is tightly pressed through tightening of the inner conical sleeve 5 and the anchoring sleeve threads, so that the holding and clamping effects on the steel strand 11 are enhanced; the sealing cylinder 6 is sleeved outside the steel strand finished product inhaul cable 1 and is in threaded fit connection with the small-caliber end of the inner taper sleeve 5, a sealing castable 7 is filled between the steel strand finished product inhaul cable 1 and the sealing cylinder 6 and is used for sealing an exposed steel strand cable body, the tail end of the sealing cylinder 6 and the steel strand finished product inhaul cable 1 are sealed through an O-shaped sealing ring 8, the inner space of the whole sealing cylinder 6 is sealed, and the sealing sleeve 9 is arranged on the sealing cylinder 6 through the inner thread of the sealing cylinder 6 to form a completely sealed structure. In this embodiment, a potting material 7 is sealed in a gap between the end cap 3 and the anchor sleeve 2 to seal the front end of the anchor sleeve.

As shown in fig. 2, the through holes 21 are arranged in the anchoring sleeve 2 in an array manner, the through holes 21 in the same queue are communicated with each other, and when the anchoring sleeve 2 is extruded through the extrusion tool, the anchoring sleeve 2 deforms to a certain extent after being stressed, so that the single-stranded steel strand 11 in the through hole 21 is longitudinally stressed and then the portion along the force is clamped into the groove formed at the communication position of the adjacent through hole 21, and a stronger holding effect on the steel strand 11 can be formed.

As shown in fig. 3, spiral corrugations are provided on the inner wall of the through hole 21 to increase the friction force between the steel strand 11 and the through hole, and prevent the steel strand 11 from slipping off when being stressed.

The sealing sleeve 9 and the outer surface of the steel strand finished product inhaul cable 1 are sealed again through the hot cable sleeve 10, a triple sealing structure formed by pouring a sealing material 7, a sealing ring 8 and the hot cable sleeve 10 is formed at the tail end of the sealing cylinder, and the sealing and corrosion preventing effects of the device are improved. In the device, the sealing castable 7 is epoxy anticorrosive filler.

When the device is used, a steel strand finished product inhaul cable 1 sequentially penetrates into a hot cable sleeve 10, a sealing sleeve 9, an O-shaped sealing ring 8 and a sealing barrel 6, after PE is stripped at the end of a single-stranded steel strand 11, the single-stranded steel strand sequentially penetrates into an outer conical clamping sleeve 4 and an anchoring sleeve 2, and the single-stranded steel strand finished product inhaul cable respectively and independently penetrates into a through hole 21. The anchor sleeve 2 is extruded through the extrusion tool, after extrusion is completed, the sealing castable 7 is injected into the front end to seal, the sealing end cover 3 is tightened, so that the anchor sleeve 2 can tightly hold the steel strand 11, and the steel strand 11 cannot slip when stressed. And screwing the thread between the anchoring sleeve 2 and the inner taper sleeve 5, screwing the thread between the sealing sleeve 6 and the inner taper sleeve 5, injecting a sealing casting material 7 into a gap between the sealing sleeve 6 and the steel strand finished product inhaul cable 1, respectively pushing and pressing an O-shaped sealing ring 8 after injection is finished, putting the sealing sleeve 9 on the gap and tightening a heat shrink tube 10, thereby realizing anchoring of the steel strand.

The device adopts the inner conical sleeve 5 and the outer conical clamping sleeve 4 which are matched for use, and the gripping and clamping effect of the anchorage device on the steel strand 11 is enhanced through the operation of slotting the outer conical clamping sleeve 4, tightening the inner conical sleeve 5 and shrinking and extruding at the conical matching position; the sealing pouring material 7 is filled in the sealing cylinder 6, the O-shaped sealing ring 8 is additionally arranged at the same time, and the triple sealing structure of the heat shrinkable tube 10 is wrapped, so that the sealing and corrosion-resistant effects are better; spiral corrugations are processed in the holes of the through holes 21 of the steel strands of the anchoring sleeve 2, so that friction between the steel strands 11 and the through holes 21 is increased, and anchoring clamping effect and anti-skid performance of the anchoring sleeve are enhanced.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims (6)

1. The utility model provides an extrusion formula steel strand wires ground tackle cable, includes two anchor structures at steel strand wires finished product cable (1) and installation steel strand wires finished product cable (1) both ends, steel strand wires finished product cable (1) comprises many single strand wires (11), its characterized in that: the anchoring structure comprises an anchoring sleeve (2), an outer conical clamping sleeve (4), an inner conical sleeve (5) and a sealing cylinder (6), wherein through holes (21) with the same number as that of the steel stranded wires (11) are formed in the anchoring sleeve (2), one ends of the steel stranded wires (11) with inner PE pipes stripped respectively and independently penetrate through the through holes (21) and are tightly extruded with the through holes into a whole, and the front end of the anchoring sleeve (2) is in threaded connection with a sealing end cover (3); the outer conical clamping sleeve (4) is sleeved outside the steel strand finished product inhaul cable (1) and connected with the tail end of the anchoring sleeve (2), the large-caliber end of the inner conical sleeve (5) is sleeved outside the outer conical clamping sleeve (4) and is in threaded connection with the tail end of the anchoring sleeve (2), and the outer conical clamping sleeve (4) completely penetrates into the inner conical sleeve (5) and is tightly attached to the inner wall of the inner conical sleeve (5); the sealing sleeve (6) is sleeved outside the steel strand finished cable (1) and is in threaded connection with the small-caliber end of the inner taper sleeve (5), a sealing pouring material (7) is filled between the steel strand finished cable (1) and the sealing sleeve (6), the tail end of the sealing sleeve (6) and the steel strand finished cable (1) are sealed through an O-shaped sealing ring (8), and the sealing sleeve (9) is arranged on the sealing sleeve (6) through the inner thread of the sealing sleeve (6).

2. The extruded steel strand anchor cable of claim 1, wherein: and a gap between the sealing end cover (3) and the anchoring sleeve (2) is filled with a sealing pouring material (7).

3. The extruded steel strand anchor cable of claim 2, wherein: the through holes (21) are arranged in the anchoring sleeve (2) in an array mode, and the through holes (21) in the same row are communicated with each other.

4. The extruded steel strand anchor cable of claim 3, wherein: the inner wall of the through hole (21) is provided with spiral ripples.

5. The extruded steel strand anchor cable of claim 4, wherein: the outer surfaces of the sealing sleeve (9) and the steel strand finished product inhaul cable (1) are sealed through a hot cable sleeve (10).

6. The extruded steel strand anchor cable of claim 5, wherein: the sealing castable (7) is epoxy anticorrosive filler.

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