CN200972810Y

CN200972810Y - Suspension composite insulator

Info

Publication number: CN200972810Y
Application number: CN 200620068126
Authority: CN
Inventors: 谢学文
Original assignee: SHIDAI RUBBER INDUSTRY Co Ltd GUANGZHOU
Current assignee: SHIDAI RUBBER INDUSTRY Co Ltd GUANGZHOU
Priority date: 2006-11-24
Filing date: 2006-11-24
Publication date: 2007-11-07
Anticipated expiration: 2016-11-24

Abstract

The utility model relates to a suspended composite insulator that comprises a core rod, an umbrella gland arranged outside the core rod, and components provided at both ends of the core rod. The components comprise a taper bush, a cone with a large opening that can be inserted into the core rod, locknuts and connectors. The taper bush is a tubular part, and the internal hole of the taper bush at the smaller-diameter end is no less than the diameter of the core rod, and the internal hole at the larger-diameter end is a horn type, and internal teeth are provided at the side of the horn. A raised stair is provided for the external ring of the taper bush at the larger-diameter end. A concaved stair is provided at the internal hole at one end of the locknuts to cooperate with the raised stair, and the other end is provided with an internal thread. The connector has an external thread that cooperate with the internal thread. The utility model has a connection strength higher than the normal pressure connection technology. The insulator does not easily escape the components at the ends of the core rod, and the phenomena of stress fatigue, crack caused by process defects and other fatigue crack do not happen, and the utility model is superior to the current link insulator and rod insulator.

Description

A kind of suspended compound insulator

Technical field

The utility model relates to a kind of composite insulator that is used for power circuit or electric railway circuit, particularly a kind of suspended compound insulator.

Background technology

Insulator is generally made by the high insulator material of resistance, and its effect is that current potential conductor inequality is separated, and not allowing has electric current to pass through between the conductor, and electric current can be circulated by certain direction.The end accessory of insulator is the part that is connected and fixed of insulator and power transmission line, electric pole, not only to bear the pressure of intrasystem various external force, lead self generation, in long-term use, also to bear the wind-force of indefinite direction and the pressure of accumulated snow, therefore the quality of connection of end accessory and plug is to be directly connected to the fail safe of product operation and the important symbol of reliability, usually adopt the plug and the end accessory interconnection technique of the production of compression joint type assembly technology, embrittlement takes place easily, easily get loose, wear out, and there is potential safety hazard in poor stability.

Summary of the invention

The purpose of this utility model is the problem and shortage at above-mentioned existence, a kind of bonding strength height, good stability is provided, is difficult for wearing out the suspended compound insulator of safety durable.

The technical solution of the utility model is achieved in that

A kind of suspended compound insulator, comprise plug, be located at the full skirt cover of mandrel outer and be located at the assembly at plug both ends, plug is soft plug, the end assembly comprises the awl muzzle, can insert the enlarging cone, locking nut and the connector that embed in the plug, wherein, the enlarging cone is substantially cone, the awl muzzle is a tubular member, endoporus or the interference fit consistent of the miner diameter end of awl muzzle with diameter of mandrel, the endoporus of the bigger diameter end of awl muzzle is set to toroidal, and the hole wall of toroidal is provided with internal tooth, and the outer toroid of the bigger diameter end of awl muzzle is provided with the boss rank; Locking nut one end endoporus is provided with the concave station rank that cooperate with the boss rank, and other end endoporus is provided with internal thread; Connector one end is provided with the external screw thread that screws mutually with internal thread, and the other end adopts bulb shape or ball-and-socket shape or suspension ring shape; More stable for the end assembly is connected with plug, on the assembly of end, also be arranged with grading ring.

For preventing transportation and the insulator fracture that bends when using, avoid the flashover discharge, plug can be done to strengthen material of main part by directional glass fiber, and electro-insulating rubber material or the flexiplast by softness becomes bar as adhesives again, makes insulator have flexibility and reliable bonding strength.

In order to improve the withstand voltage and anti-pollution characteristic of full skirt cover, the full skirt cover can adopt insulating polymeric material to make, and insulating polymeric material is materials such as silicon rubber, ethylene propylene diene rubber or soft plastic.The skirt cover is whole to be gone up or directly is socketed on the plug with plug is one-body molded.

The utility model is owing to adopted the version of above-mentioned end assembly, can not damage plug during assembling, adopt this cone enlarging interconnection technique to make the bonding strength of end assembly and plug be higher than the bonding strength of conventional crimp technology, plug was difficult for getting loose in the assembly of end when insulator used, and fracture or wind pendulum fatigue fracture phenomenon that stress fatigue and defective workmanship cause can not occur; The big I of the flexible diameter of mandrel of the utility model is according to the tensile load size decision of product; The type of the length of suspended compound insulator, the quantity of umbrella cover and shape, end assembly can satisfy the instructions for use of the various classes of insulation and strength grade according to antipollution grade and handling characteristics decision; All be better than existing link insulator and bar type composite insulator at aspects such as useful life, security reliabilities.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is the utility model insulator part cut-away view;

Fig. 2 is the utility model decomposing schematic representation;

Fig. 3 is that the utility model full skirt cover is socketed in the structural representation on the plug;

Fig. 4 is the Unitarily molded structural representation on plug of the utility model full skirt cover;

Fig. 5 is the structural representation of the utility model band grading ring;

Fig. 6 is the decomposing schematic representation of band grading ring of the present invention.

Embodiment

As Fig. 1-shown in Figure 4, the utility model is a kind of suspended compound insulator, comprise plug 1, be located at the outer full skirt cover 2 of plug 1 and be located at the assembly 3 at plug 1 both ends, end assembly 3 comprises being provided with bores muzzle 4, enlarging cone 5, locking nut 6 and connector 7, wherein, awl muzzle 4 is a tubular member, the endoporus and the consistent or interference fit of plug 1 diameter of the miner diameter end of awl muzzle 4, the endoporus of the bigger diameter end of awl muzzle 4 is set to toroidal, and the toroidal inner hole wall is provided with internal tooth, and the outer toroid of the bigger diameter end of awl muzzle 4 is provided with boss rank 41; Locking nut 6 one end endoporus are provided with concave station rank 61, and locking nut 6 other end endoporus are provided with internal thread 62; Connector 7 is provided with the external screw thread 71 that screws mutually with internal thread 62.

During assembling, locking nut 6 is passed awl muzzle 4 to be offseted the interior step 61 of outer step 41 and locking nut 6 to close, the plug 1 that will be with full skirt cover 2 then passes the miner diameter end endoporus of awl muzzle 4, inserting vertically from the outer end to embed by enlarging cone 5 again makes plug 1 expansion be pressed on the toroidal inner hole wall in plug 1 body, the internal tooth that the toroidal hole wall is provided with can effectively increase coefficient of friction, again by compressing enlarging cone 5 and plug 1 in the connector 7 precession locking nuts 6.

Plug 1 is done to strengthen material of main part by directional glass fiber, and electro-insulating rubber material or the flexiplast by softness becomes bar as adhesives again.

Full skirt cover 2 adopts insulating polymeric material to make; as macromolecule insulating material such as silicon rubber or ethylene propylene diene rubbers; the effect of have the protection plug, increase creep distance, opposing being polluted; can make different shape according to withstand voltage and fouling resistance rating; as shown in Figure 3; full skirt cover 2 is socketed on the plug 1, and as shown in Figure 4, it is 2 Unitarily molded on plug 1 that full skirt overlaps.

Connector 7 can adopt multiple shape, as shown in Figure 1, is the ball-and-socket shape, as shown in Figure 4, is the bulb shape, as shown in Figure 2, is the suspension ring shape.More stable for end assembly 3 is connected with plug 1, on end assembly 3, also be arranged with grading ring 8, shown in Fig. 5-6.

Although the utility model is to describe with reference to specific embodiment, this description and not meaning that is construed as limiting the utility model.With reference to description of the present utility model, other of the disclosed embodiments changes, if all can expect for those skilled in the art, so, such variation should belong within this claim institute's restricted portion and the spirit.

Claims

1, a kind of suspended compound insulator, comprise plug (1), be located at the outer full skirt cover (2) of plug (1) and be located at the assembly (3) at plug (1) both ends, it is characterized in that: described plug (1) is soft plug, described assembly (3) comprises awl muzzle (4), can insert the enlarging cone (5) and locking nut (6) and the connector (7) that embed in the plug (1), wherein:

Awl muzzle (4) is a tubular member, the endoporus and the consistent or interference fit of plug (1) diameter of the miner diameter end of awl muzzle (4), the endoporus of the bigger diameter end of awl muzzle (4) is set to toroidal, and the hole wall of toroidal is provided with internal tooth, and the outer toroid of the bigger diameter end of awl muzzle (4) is provided with boss rank (41);

Locking nut (6) one end endoporus are provided with the concave station rank (61) of matching with boss rank (41), and other end endoporus is provided with internal thread (62);

Connector (7) is provided with the external screw thread (71) that screws mutually with internal thread (62).

2, suspended compound insulator according to claim 1 is characterized in that: the path cylindrical of described awl muzzle (4) is provided with end grading ring (8).

3, suspended compound insulator according to claim 1 and 2 is characterized in that: the other end of described connector (7) is set to bulb shape or ball-and-socket shape or suspension ring shape.

4, suspended compound insulator according to claim 1 is characterized in that: described full skirt cover (2) is one-body molded with plug (1).

5, suspended compound insulator according to claim 1 is characterized in that: described full skirt cover (2) is socketed on the plug (1).