CN204333778U - Change 110kV strain insulator list insulator string backup protection jig - Google Patents

Abstract

The utility model relates to the replacement of a 110kV tension-resistant single-string insulator back-up protection clamp, including a back-up protection front card, one end of the back-up protection front card has a fixing hole, a flat belt is passed through the fixing hole, and one end of the flat belt is fixed on the One end of the flat belt frame, the flat belt frame is provided with a through hole, the through hole is provided with a flat belt shaft, the other end of the flat belt is arranged on the flat belt shaft, and the other end of the flat belt frame is provided with an angle steel hook , angle steel is vertically arranged on the angle steel hook. The utility model replaces the traditional double-headed lead screw shrinking device with a flat belt. Since the flat belt is fixed on the back-up protection front card, the flat belt frame and the flat belt shaft, the entire back-up protection card is integrated, so there will be no flat The problem that the back-up protection card fails due to the belt falling off overcomes the problem of the existing 110kV tension clamp when the insulator is replaced by the double-headed screw falling off the insulating pull rod and causing the clamp to fail.

Description

Replacing the 110kV tension single-string insulator back-up protection jig

technical field

The utility model relates to the field of replacing insulator protection cards, in particular to a backup protection clamp for replacing 110kV tension-resistant single-string insulators.

Background technique

  At present, when replacing the tension-resistant single-string insulators of 110kV power lines with electricity, the clamps of the lead screw and the screw nut type shrinkage assembly are mainly used. The lead screw at both ends of the fixture on the shoulder side and the fixture on the lead side and the screw nut type shrink assembly, and the fixture on the crossarm side are split, and it consists of two separate symmetrical cavities that match the hanging points of the crossarm side hardware. , The contraction assembly is composed of a double-ended lead screw and an insulating rod connection, without backup protection measures. During operation, the two splints of the clamp on the cross-arm side are clamped successively on the hanging point of the hardware on the cross-arm side, and the cavity of the clamp on the wire side is fastened to the screw of the right-angle hanging plate, and then the metal double ends in the shrink assembly are operated. The lead screw and the insulator string are on the same plane, and are respectively located on both sides of the insulator string. Since the fixture has no backup protection measures, the entire tension fixture may fail during use.

Utility model content

The technical problem to be solved by the utility model is to provide a backup protection fixture for replacing 110kV strain-resistant single-string insulators, so as to overcome the existing 110kV strain-resistant fixture when the double-headed lead screw falls off from the insulating pull rod when the insulator is replaced. failure problem.

The technical solution adopted by the utility model to solve the above problems is: replace the 110kV tension-resistant single-string insulator backup protection clamp, including the backup protection front clamp, one end of the backup protection front clamp is opened with a fixing hole, and the flat belt is passed through the fixing hole , one end of the flat belt is fixed on one end of the flat belt frame, the flat belt frame is provided with a through hole, the through hole is provided with a flat belt shaft, the other end of the flat belt is arranged on the flat belt shaft, and the flat belt The other end of the frame is provided with an angle steel hook for matching with the angle steel on the iron tower. During the clamping process of the existing clamp, the double-headed screw will fall off the insulating pull rod, causing the clamp to fail when the insulator is replaced. One end of the backup protection front clamp of the utility model is connected to the joint on the wire, and the other end There is a through hole for passing the flat belt. The flat belt can move in the through hole. One end of the flat belt is fixed on the flat belt frame, and the other end is set on the flat belt shaft. The flat belt frame rotates around its own axis, and the movement and contraction of the flat belt is realized through the rotation of the flat belt shaft, and then the length of the entire backup protection card is adjusted. Since the flat belt is fixed on the flat belt frame and the flat belt shaft, it will not There is a problem that the backup protection card fails due to the fall of the flat belt. The angle steel hook and the angle steel cooperate to connect the backup protection card to the cross arm. When the tension clamp is replacing the insulator, the double-headed screw falls off the insulating pull rod, resulting in the failure of the clamp.

Further, the other end of the flat belt frame is set as a U-shaped splint, and the two side plates of the U-shaped splint are provided with a through hole I for fixing the fixed shaft, and one end of the angle steel hook is provided with a hole that matches the through hole I. The threaded hole is set in the through hole I through the fixed shaft, and the angle steel hook is fixed in the U-shaped splint in the threaded hole. The angle steel hook can rotate around the fixed axis, therefore, the movement of the backup protection card at different positions of the cross arm can be realized by rotating the angle steel hook.

Further, the angle steel hook is vertically provided with fastening bolts matched with the angle steel, and hooks are provided at the ends of the fastening bolts. The hook can move in the axial direction of the fastening bolt, and the backup protection card of the present invention can be connected to cross arms of different sizes, which increases the application range of the backup protection card.

Further, two through-holes II are symmetrically opened on the webbing frame, and a through-hole III matching with the through-hole II is opened on the webbing shaft, and positioning bolts are pierced in the through-hole II and the through-hole III. The setting of the positioning bolt can increase the stability of the webbing shaft, making it difficult to loosen, thus avoiding the natural shrinkage of the webbing, and improving the fixing stability of the entire backup protection card.

Further, the contact surface between the fixing hole and the flat belt is an arc surface. The arc surface has less resistance, which facilitates the movement and contraction of the flat belt in the through hole.

In summary, the beneficial effects of the utility model are:

1. The utility model replaces the traditional double-headed lead screw shrinking device with a flat belt. Since the flat belt is fixed on the back-up protection front card, the flat belt frame and the flat belt shaft, the entire back-up protection card is integrated, so it will not The problem that the backup protection card fails due to the shedding of the flat belt has overcome the problem that the existing 110kV tension clamp has the problem of the double-headed screw falling off the insulating pull rod when the insulator is replaced, resulting in the failure of the clamp.

2. In the utility model, the end connecting the flat belt frame and the angle steel hook is set as a U-shaped splint, and the angle steel hook is set in the U-shaped splint through the fixed shaft, so as to realize the movement of the backup protection card at different positions of the cross arm.

3. In the utility model, a fastening bolt cooperating with the angle steel is arranged vertically on the angle steel hook, and a hook is provided at the end of the fastening bolt, which increases the scope of use of the backup protection card.

4. The utility model improves the fixing stability of the entire backup protection card by setting the positioning bolts on the flat belt shaft.

5. The utility model makes the movement of the flat belt more convenient by making the contact surface between the fixing hole and the flat belt an arc surface.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the utility model, constitute a part of the application, and do not constitute a limitation to the embodiments of the utility model. In the attached picture:

Fig. 1 is the structural representation of backup protection card;

FIG. 2 is a partial top view of FIG. 1 .

Marks and corresponding component names in the attached drawings:

1—backup protection front card; 2—flat belt; 3—flat belt frame; 4—flat belt shaft; 5—locating bolt; 6—fixed shaft; 7—angle steel hook; Bolt; 10—angle steel; 11—hook; 12—fixing hole.

Detailed ways

The utility model will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example:

As shown in Figure 1 and Figure 2, replace the 110kV tension-resistant single-string insulator backup protection fixture, including the backup protection front card 1, one end of the backup protection front card 1 has a fixing hole 12, and the flat belt 2 is passed through the fixing hole 12. The contact surface between the fixing hole 12 and the flat belt 2 is a circular arc surface, one end of the flat belt 2 is fixed on one end of the flat belt frame 3, and a through hole is opened on the flat belt frame 3, and the through hole is provided with a flat belt shaft 4. The other end of the flat belt 2 is set on the flat belt shaft 4, and two through holes II are symmetrically opened on the flat belt frame 3, and a through hole III matched with the through hole II is opened on the flat belt shaft 4. Holes II and through holes III are pierced with positioning bolts 5, and the other end of the flat belt frame 3 is set as a U-shaped splint 8, and the two side plates of the U-shaped splint 8 are provided with through holes I for fixing the fixed shaft 6. One end of the angle steel hook 7 is provided with a threaded hole matching with the through hole I, and the angle steel hook 7 is fixed in the U-shaped splint 8 through the fixed shaft 6 through the through hole I and the threaded hole, and the angle steel hook 7 is vertical A fastening bolt 9 matched with the angle steel 10 is provided, and a hook 11 is provided at the end of the fastening bolt 9 .

During the use of the utility model, the backup protection front card 1 is connected with the joint on the electric wire, the angle steel hook card 7 is stuck on the cross arm, and the flat belt 2 is moved and contracted by rotating the flat belt shaft 4, and the angle steel hook is rotated The card 7 realizes the fixed connection of the backup protection card at different positions of the cross arm.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. Within the protection scope of the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (5)

1. change 110kV strain insulator list insulator string backup protection jig, (1) is blocked before comprising backup protection, it is characterized in that, before described backup protection, one end of card (1) has open fixing hole (12), bandlet (2) is located in fixing hole (12), a termination of bandlet (2) is fixed on one end of bandlet frame (3), (3) offer through hole with bandlet frame, through hole is provided with bandlet axle (4), another termination of bandlet (2) is arranged on bandlet axle (4), the other end of described bandlet frame (3) is provided with the angle steel hook card (7) for matching with the angle steel (10) on steel tower.

2. replacing 110kV strain insulator list insulator string backup protection jig according to claim 1; it is characterized in that; the other end of described bandlet frame (3) is set to U-shaped clamping plate (8); two side plates of U-shaped clamping plate (8) all offer the through hole I for fixing fixed axis (6); one end of angle steel hook card (7) is provided with the screwed hole coordinated with through hole I, is located in through hole I, screwed hole is fixed in U-shaped clamping plate (8) by angle steel hook card (7) by fixed axis (6).

3. replacing 110kV strain insulator list insulator string backup protection jig according to claim 2; it is characterized in that; described angle steel hook card (7) is vertically installed with the fastening bolt (9) coordinated with angle steel (10), the end of fastening bolt (9) is provided with snap fit (11).

4. according to the arbitrary described replacing 110kV strain insulator list insulator string backup protection jig of claims 1 to 3; it is characterized in that; the upper also symmetry of described bandlet frame (3) offers two through holes II; bandlet axle (4) offers the through hole III coordinated with through hole II, in through hole II, through hole III, be equipped with bolt (5).

5. replacing 110kV strain insulator list insulator string backup protection jig according to claim 4, is characterized in that, described fixing hole (12) is arc surface with the contact-making surface of bandlet (2).