CN210577662U

CN210577662U - Pre-twisted strain clamp for steel-cored aluminum strand

Info

Publication number: CN210577662U
Application number: CN201921539641.9U
Authority: CN
Inventors: 黄凯
Original assignee: Suzhou Chaoshuofan Plastic Products Co ltd
Current assignee: Suzhou Chaoshuofan Plastic Products Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-19
Anticipated expiration: 2029-09-17

Abstract

The utility model belongs to the technical field of electric power fitting technique and specifically relates to a preformed helical strain clamp for steel-cored aluminum strand wires, including the yoke plate, yoke plate triangle position all runs through and has seted up the connecting hole, yoke plate left side one corner position is connected with the go-between through the connecting hole, go-between one side is connected with U type ring one, U type ring one is connected on external dead lever through fixed limit structure, yoke plate right side two corners position is connected with U type ring two through connecting hole homogeneous symmetry, two U type ring two keep away from yoke plate one side homogeneous ring knot is connected with right angle ring, two right angle ring position is connected with heart type ring through fixed limit structure; two pre-twisted wires are symmetrically connected to the yoke plate, so that the pre-twisted tension-resistant wire clamp for the steel-cored aluminum strand can be used for simultaneously winding and fixing a cable through the two pre-twisted wires in the using process, the tensile property of the tension-resistant wire clamp is greatly enhanced, the service cycle of the wire clamp is prolonged, and the use requirements of people are met.

Description

Pre-twisted strain clamp for steel-cored aluminum strand

Technical Field

The utility model relates to an electric power fitting technical field especially relates to a preformed tension clamp that steel-cored aluminum strand wires were used.

Background

The strain clamp is used for fixing a wire so as to bear the tension of the wire and hang the wire to a strain insulator-string group or a hardware fitting on a tower, and the strain clamp can be divided into two types, the first type, according to the difference of the structure and the installation condition: the strain clamp will bear the whole pulling force of wire or lightning conductor, and the fastener grip is not less than the 90 by installation wire or the rated tensile resistance of lightning conductor, nevertheless does not regard as the electric conductor, and this type of line clamp can also pull down after the wire installation, uses separately, and this type of fastener has bolt type strain clamp and wedge type strain clamp etc. the second type: tension-resistant wire clamps bear all tensile force of a lead or a lightning conductor and are used as electric conductors, so that the wire clamps cannot be disassembled once being installed.

Most of the existing pre-twisted strain clamps are single pre-twisted wires, the single pre-twisted wire strain clamp cannot meet the use requirements of people in thick cables or environments with large external wind power, meanwhile, the connection part of the pre-twisted wires and the core-shaped ring in the existing strain clamps is not provided with a fixed structure, the cables drive the connection part of the pre-twisted wires and the core-shaped ring to generate relative friction under the action of external wind power, and the pre-twisted wire breakage phenomenon is very easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art and providing a pre-twisted strain clamp for a steel-cored aluminum strand.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a preformed helical strain clamp that steel-cored aluminum strand wires were used, includes the yoke plate, the yoke plate is isosceles triangle plate type structure, yoke plate triangle position all runs through and has seted up the connecting hole, yoke plate left side one corner position is connected with the go-between through the connecting hole, go-between one side is connected with U type ring one, U type ring one is connected on external dead lever through fixed limit structure, yoke plate right side two corners position has U type ring two, two through the equal symmetric connection of connecting hole U type ring two is kept away from yoke plate one side homoannulated lock is connected with right angle ring, two right angle ring position has heart type ring, two through fixed limit structure connection heart type ring one side is connected with preformed helical thread, two preformed helical thread runs through and all connects in the position corresponds heart type ring.

Preferably, the first U-shaped ring is connected with an external fixed rod, the second U-shaped ring is connected with the yoke plate, the heart-shaped ring is connected with the right-angle ring, and the fixed limiting structure comprises a fixing bolt, a fastening nut, a bolt hole and a fixing pin, the fixing bolt is respectively connected with the first U-shaped ring, the second U-shaped ring and the heart-shaped ring in a penetrating manner, the fastening nut is connected with the outer side of the fixing bolt through threads, the bolt hole is arranged in the top end position of the fixing bolt in a penetrating manner, and the fixing pin is inserted into the inner cavity of the bolt hole.

Preferably, the heart-shaped ring comprises a ring body, an arc-shaped groove is formed in the inner cavity of the ring body in a penetrating mode, the preformed armor rods penetrate through the arc-shaped groove, and a rubber layer is fixedly connected to the surface of the arc-shaped groove.

Preferably, the preformed armor rod fixing structure comprises a pressing plate, a pressing plate bolt and a pressing plate nut, the pressing plate is located above the arc-shaped groove and is of an arc-shaped structure, the pressing plate is matched with the arc-shaped groove structure, the pressing plate bolt penetrates through the pressing plate and the arc-shaped groove, the number of the pressing plate bolts is two, and the pressing plate nut is fixed on the outer side surface of the pressing plate bolt through threads.

Preferably, the rotation direction of the preformed armor rods is the right-handed direction.

The utility model provides a preformed helical strain clamp that steel-cored aluminum strand wires used, beneficial effect lies in:

1. the two pre-twisted wires are symmetrically connected to the yoke plate, so that the pre-twisted tension-resistant wire clamp for the steel-cored aluminum strand can simultaneously wind and fix a cable through the two pre-twisted wires in the using process, the tensile property of the tension-resistant wire clamp is greatly enhanced, the service cycle of the wire clamp is prolonged, and the use requirements of people are met;

2. through being equipped with preformed armor rods fixed knot structure in heart type ring inside, make this kind of strain clamp accessible preformed armor rods fixed knot hoop on heart type ring further in the use, avoid the cable to drive preformed armor rods and heart type ring junction to produce relative friction under the effect of external wind power to lead to preformed armor rods fracture phenomenon to take place.

Drawings

Fig. 1 is a schematic structural view of a center ring of a pre-twisted strain clamp for a steel-cored aluminum strand according to the present invention;

fig. 2 is a schematic view of an overall structure of a pre-twisted strain clamp for a steel-cored aluminum strand according to the present invention;

fig. 3 is a schematic view of a pre-twisted strain clamp for a steel-cored aluminum strand according to the present invention;

in the figure: 1. a yoke plate; 2. a connecting ring; 3. a first U-shaped ring; 4. a U-shaped ring II; 5. a right-angle ring; 6. a heart-shaped ring; 7. pre-stranding; 8. fixing the bolt; 9. fastening a nut; 10. a pin hole; 11. a fixing pin; 12. a ring body; 13. an arc-shaped slot; 14. pressing a plate; 15. a platen bolt; 16. and a pressure plate nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a preformed strain clamp for steel-cored aluminum strand, including yoke plate 1, yoke plate 1 is isosceles triangle plate type structure, the connecting hole has all been run through to yoke plate 1 triangle position, 1 left side one corner position of yoke plate is connected with go-between 2 through the connecting hole, go-between 2 one side is connected with U type ring one 3, U type ring one 3 is connected on external dead lever through fixed limit structure, 1 right side two corners position of yoke plate is through the equal symmetric connection of connecting hole U type ring two 4, two U type ring two 4 keep away from yoke plate 1 one side and all buckle and be connected with right angle ring 5, 5 ring positions of two right angle rings are connected with heart type ring 6 through fixed limit structure, 6 one side of two heart type rings is connected with preformed armor 7, two preformed armor 7 run through all connect in the heart type ring 6 that the position corresponds, through symmetric connection has two preformed armor 7 on yoke plate 1, make this kind of preformed strain clamp for preformed aluminum strand simultaneously through two preformed armor 7 preformed armor The cable is wound and fixed, so that the tensile property of the strain clamp is greatly enhanced, the service life of the clamp is prolonged, and the use requirements of people are met.

The connection part of the U-shaped ring I3 and an external fixed rod, the connection part of the U-shaped ring II 4 and the yoke plate 1, and the connection part of the heart-shaped ring 6 and the right-angle ring 5 are respectively provided with a fixed limiting structure, each fixed limiting structure comprises a fixed bolt 8, a fastening nut 9, a bolt hole 10 and a fixed pin 11, the fixed bolts 8 are respectively connected with the U-shaped ring I3, the U-shaped ring II 4 and the heart-shaped ring 6 in a penetrating manner, the fastening nuts 9 are connected to the outer side of the fixed bolts 8 through threads, the bolt holes 10 are arranged at the top end positions of the fixed bolts 8 in a penetrating manner; the stability that each part is connected in whole strain clamp can be guaranteed through fixed limit structure, satisfies the user demand.

The heart-shaped ring 6 comprises a ring body 12, an arc-shaped groove 13 is formed in the inner cavity of the ring body 12 in a penetrating mode, the preformed armor rods 7 penetrate through the arc-shaped groove 13, and a rubber layer is fixedly connected to the surface of the arc-shaped groove 13; through being equipped with the rubber layer on arc wall 13 surface, further reduce the damage that the friction caused between preformed armor rods 7 and the arc wall 13, prolong the life of whole strain clamp.

The preformed armor rod fixing structure comprises a pressing plate 14, a pressing plate bolt 15 and a pressing plate nut 16, wherein the pressing plate 14 is positioned above the arc-shaped groove 13, the pressing plate 14 is of an arc-shaped structure, the pressing plate 14 is matched with the arc-shaped groove 13 in structure, the pressing plate bolt 15 penetrates through the pressing plate 14 and the arc-shaped groove 13, the number of the pressing plate bolts 15 is two, and the pressing plate nut 16 is fixed on the outer side surface of the pressing plate bolt 15 through threads; through being equipped with preformed armor rods fixed knot structure inside heart type ring 6, make this kind of strain clamp accessible preformed armor rods fixed knot construct further with preformed armor rods 7 in the use on heart type ring 6, avoid the cable to drive preformed armor rods 7 and the production relative friction of the 6 junction of heart type ring under the effect of external wind power to lead to preformed armor rods 7 phenomenon of rupture to take place.

The rotation direction of the preformed armor rods 7 is the right-handed rotation direction; the use requirement is met, and the grip between the preformed armor rods 7 and the cable is ensured.

When the pre-twisted strain clamp is used, the pre-twisted strain clamp for the steel-cored aluminum strand is firstly fixedly connected to a proper position of a cable frame under the action of a fixed limiting structure through a U-shaped ring I3, a proper position of the cable is selected and marked, two pre-twisted wires 7 are sequentially and uniformly wound on the outer side surface of the cable, the tensile property of the strain clamp is greatly enhanced, the service cycle of the clamp is improved, the use requirement of people is met, the winding direction of the pre-twisted wires 7 is the right-handed direction, after the winding is finished, the pre-twisted wires 7 and a core-shaped ring 6 are fixedly clamped through a pre-twisted wire fixing structure, a pressing plate 14 is tightly attached to the pre-twisted wires 7, the pre-twisted wires 7 are tightly hooped on the core-shaped ring 6 under the matching action of a pressing plate bolt 15 and a pressing plate nut 16, the relative friction between the pre-twisted wires 7 and the core-shaped ring 6 under the action of external wind, thereby causing breakage of the preformed armor rods 7.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The pre-twisted strain clamp for the steel-cored aluminum strand comprises a yoke plate (1) and is characterized in that the yoke plate (1) is of an isosceles triangle plate type structure, connecting holes are formed in the triangle positions of the yoke plate (1) in a penetrating mode, one corner position of the left side of the yoke plate (1) is connected with a connecting ring (2) through the connecting holes, one side of the connecting ring (2) is connected with a U-shaped ring I (3), the U-shaped ring I (3) is connected onto an external fixed rod through a fixing limiting structure, two corner positions of the right side of the yoke plate (1) are symmetrically connected with a U-shaped ring II (4) through the connecting holes, the two U-shaped ring II (4) are far away from one side of the yoke plate (1) and are connected with right-angle rings (5) in a ring buckling mode, the two ring positions of the right-angle rings (5) are connected with a core-shaped ring II (6), the two preformed armor rods (7) penetrate through and are connected to the heart-shaped ring (6) corresponding to the position.

2. The pre-twisted strain clamp for steel-cored aluminum strand of claim 1, the joint of the U-shaped ring I (3) and an external fixed rod, the joint of the U-shaped ring II (4) and the yoke plate (1), and the joint of the heart-shaped ring (6) and the right-angle ring (5) are all provided with fixed limit structures, the fixed limiting structure comprises a fixed bolt (8), a fastening nut (9), a bolt hole (10) and a fixed pin (11), the fixing bolts (8) are respectively connected with the U-shaped ring I (3), the U-shaped ring II (4) and the heart-shaped ring (6) in a penetrating way, the fastening nut (9) is connected to the outer side of the fixing bolt (8) through threads, the bolt hole (10) penetrates through the top end of the fixing bolt (8), and the fixing pin (11) is inserted into the inner cavity of the bolt hole (10).

3. The pre-twisted strain clamp for the steel-cored aluminum strand as recited in claim 1, wherein the core-shaped ring (6) comprises a ring body (12), an arc-shaped groove (13) is formed in an inner cavity of the ring body (12) in a penetrating manner, the pre-twisted wire (7) penetrates through the arc-shaped groove (13), and a rubber layer is fixedly connected to the surface of the arc-shaped groove (13).

4. The pre-twisted strain clamp for the steel-cored aluminum strand as recited in claim 3, wherein the pre-twisted wire fixing structure comprises a pressing plate (14), a pressing plate bolt (15) and a pressing plate nut (16), the pressing plate (14) is located above the arc-shaped groove (13), the pressing plate (14) is of an arc-shaped structure, the pressing plate (14) is matched with the arc-shaped groove (13) in structure, the pressing plate bolt (15) penetrates through the pressing plate (14) and the arc-shaped groove (13), the number of the pressing plate bolts (15) is two, and the pressing plate nut (16) is fixed on the outer side surface of the pressing plate bolt (15) through threads.

5. The pre-twisted strain clamp for the steel-cored aluminum strand as recited in claim 1, wherein the rotation direction of the pre-twisted wire (7) is a right-hand direction.