CN215071553U

CN215071553U - Double-preformed-yarn tightening structure

Info

Publication number: CN215071553U
Application number: CN202121566749.4U
Authority: CN
Inventors: 罗蛟; 杨燕; 张俊杰
Original assignee: Shanghai Shenyong Mechanical Technology Co ltd
Current assignee: Shanghai Shenyong Mechanical Technology Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-07
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses a two preformed armor rods stringing structure, the outer skein of skein, packing and U type in connecting piece, U type, skein bottom is provided with U type bushing ring in the U type, U type bushing ring sets up in on the closed ring of connecting piece, skein both ends are helical structure duplex winding on locating the wire steel core in the U type, around locating the wire steel core the skein outside is around being equipped with a plurality of packing bars and forming the filling layer in the U type, the packing is helical structure, the both ends of the outer skein of U type are helical structure and around locating the outside of filling layer, the outer skein bottom cover of U type is located in the fixed slot of connecting piece. The double-preformed-yarn tightening structure adopting the structure is simple in structure and convenient to install, the U-shaped inner twisted yarn and the U-shaped outer twisted yarn are twisted to improve the holding power, and the connection is more reliable.

Description

Double-preformed-yarn tightening structure

Technical Field

The utility model belongs to the technical field of the electrical accessories technique and specifically relates to a two preformed armor rods stringing structure is related to.

Background

With the rapid development of power grid construction, more and more lines of 220KV,500KV and 1000KV are built, more and more power transmission lines are built and reconstructed, and line stringing construction is a main process in overhead power transmission line construction, and the task of the line stringing construction is to erect a conducting wire and a lightning conductor on an assembled tower according to designed stringing stress (sag), and to ensure the quality of stringing, strive to reduce the interference to the surrounding environment, in the stringing process, tension is applied to the stringing to enable the stringing to be separated from the ground, obstacles and crossing facilities in an overhead manner, so as to avoid the damage of the conducting wire. In the process of stringing, products for connecting a wire and a hanging point of traction equipment usually adopt a net sleeve and a wedge-shaped tightening tool, the specification of the laid wire is larger due to the improvement of the voltage grade, the requirement on the higher gripping power of the product for traction is higher, a part of products require the gripping power of the product to be above 80KN, the original traction net sleeve and the wedge-shaped tightening tool cannot meet the gripping power of the wire, the wire frequently slips from the net sleeve and the wedge-shaped tool in stringing traction construction, the light person conducts the construction again, the heavy person conducts an industrial accident, and the power company and the construction unit are always puzzled by the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a two preformed armor rods tight line structures, simple structure, simple to operate improves the grip through the outer hank silk of hank silk structure of U type in the U type and U type, connects more reliably.

In order to achieve the purpose, the utility model provides a double-preformed armor rod tightening structure, which comprises a connecting piece, a U-shaped inner armor rod, a filling strip and a U-shaped outer armor rod,

the U-shaped internal twisted wire is characterized in that a U-shaped lining ring is arranged at the bottom of the U-shaped internal twisted wire, the U-shaped lining ring is arranged on a closed ring of the connecting piece, two ends of the U-shaped internal twisted wire are of a spiral structure and wound on a wire steel core, a plurality of filling strips are arranged outside the U-shaped internal twisted wire around the wire steel core to form a filling layer, the filling strips are of a spiral structure, two ends of the U-shaped external twisted wire are of a spiral structure and wound on the outer side of the filling layer, and the bottom of the U-shaped external twisted wire is sleeved in a fixing groove of the connecting piece.

Preferably, the connecting piece is a heart-shaped ring, the connecting piece forms a closed ring through a reinforcing rib, and a fixing groove is formed in the outer side of the connecting piece.

Preferably, the inner sides of the U-shaped inner stranded wire, the filling strip and the U-shaped outer stranded wire are provided with frosting layers.

Preferably, the outer side of the U-shaped lining ring is provided with a limiting groove.

Therefore, the utility model adopts the above structure a two preformed armor rods stringing structure has following beneficial effect:

(1) simple structure adopts helical structure, simple to operate, but bare-handed installation, and the two legs of stranded conductor form than the little tubular structure of wire diameter nature winding on the wire in advance, and the strand silk atress tubular structure further reduces to the radial downward pressure that produces of wire, can produce extremely strong holding power.

(2) The U-shaped inner stranded wire and the U-shaped outer stranded wire are twisted to form the double stranded wire structure, the holding power of a connected traction wire can reach 95% of the nominal breaking force of the wire, the normal traction force of the wire is not higher than 40% of the nominal breaking force of the wire, the traction force of the wire is not higher than 80% of the nominal breaking force of the wire in special terrains and environments, and connection is more reliable.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic view of a double pre-twisted wire tightening structure of the present invention;

FIG. 2 is a cross-sectional view of the steel core of the wire of the present invention;

fig. 3 is a schematic view of the structure of the U-shaped bushing ring of the present invention.

Reference numerals

1. A connecting member; 11. reinforcing ribs; 2. u-shaped external twisted wire; 3. u-shaped internal twisted wire; 4. filling the strip; 5. a U-shaped backing ring; 6. the wire steel core.

Detailed Description

Examples

Fig. 1 is the utility model relates to a two preformed helical yarn stringing structure sketch map, fig. 2 is the utility model discloses wire steel core cross-sectional view, fig. 3 is the utility model discloses U type lining ring structure sketch map, as shown in the figure, a two preformed helical yarn stringing structures, strand 3, packing strip 4 and the outer strand 2 of U type in connecting piece 1, the U type. This embodiment connecting piece 1 is heart-shaped ring, and connecting piece 1 forms the airtight ring through stiffening rib 11 and is used for connecting U type internal twist 3, and the fixed slot has been seted up in connecting piece 1's the outside and is used for fixed U type external twist 2, and connecting piece 1 is used for connecting traction equipment. The bottom of the U-shaped internal twisted wire 3 is provided with a U-shaped lining ring 5, the outer side of the U-shaped lining ring 5 is provided with a limiting groove, the U-shaped internal twisted wire 3 is arranged in the limiting groove, and the U-shaped lining ring 5 is arranged on a closed ring of the connecting piece 1 and used for protecting the U-shaped internal twisted wire 3 to reduce abrasion.

3 both ends of hank silk are helical structure and locate on wire steel core 6 in the U type, around being equipped with a plurality of filling strip 4 around 3 outsides of hank silk in the U type of locating wire steel core 6 and forming the filling layer, filling strip 4 is helical structure, and the both ends of hank silk 2 are helical structure and around locating the outside of filling layer outside the U type, and the fixed slot of connecting piece 1 is located to the cover in 2 bottoms of hank silk outside the U type. The inner sides of the U-shaped inner stranded wires, the filling strips and the U-shaped outer stranded wires are provided with frosting layers, so that friction force is improved. Adopt helical structure, simple to operate can bare-handed installation, and does not need professional training, and the outward appearance is succinct pleasing to the eye, and the two legs of stranded conductor form than the little tubular structure of wire diameter twine naturally on the wire in advance, and the hank silk atress tubular structure further reduces to the radial downward pressure that produces of wire, can produce extremely strong holding power. The U-shaped inner stranded wire 3 and the U-shaped outer stranded wire 2 are twisted to form a wire twisting structure to improve the holding power, the holding power of a connected traction wire can reach 95% of the nominal breaking force of a wire, the normal traction force of the wire is not higher than 40% of the nominal breaking force of the wire, the traction force of the wire is not higher than 80% of the nominal breaking force of the wire in special terrains and environments, and the connection is more reliable.

Therefore, the utility model adopts the above structure a two preformed armor rods tight line structure, simple to operate, two hank silk structures improvement clenching strength in through the U type and the outer hank silk of U type, it is more reliable to connect.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a two preformed armor rods stringing structure, includes the connecting piece, its characterized in that: also comprises a U-shaped inner twisted wire, a filling strip and a U-shaped outer twisted wire,

2. The double preformed armor rod stringing structure as claimed in claim 1, wherein: the connecting piece is heart-shaped ring, the connecting piece passes through the stiffening rib and forms airtight ring, the fixed slot has been seted up in the outside of connecting piece.

3. The double preformed armor rod stringing structure as claimed in claim 1, wherein: and the inner sides of the U-shaped inner stranded wire, the filling strip and the U-shaped outer stranded wire are provided with frosting layers.

4. The double preformed armor rod stringing structure as claimed in claim 1, wherein: and a limiting groove is formed in the outer side of the U-shaped lining ring.