CN111044610A

CN111044610A - Porcelain insulator ultrasonic detection special fixture

Info

Publication number: CN111044610A
Application number: CN201911269147.XA
Authority: CN
Inventors: 董晓虎; 姚京松; 吴军; 程绳; 付军; 谢富贵; 方爱英; 董琼; 时伟君; 张楚谦; 刘姜; 侯新文; 金哲; 张鼎; 范杨
Original assignee: Hubei Chaoneng Electric Power Co ltd; State Grid Corp of China SGCC; Maintenance Branch of State Grid Hubei Electric Power Co Ltd
Current assignee: Hubei Chaoneng Electric Power Co ltd; State Grid Corp of China SGCC; Maintenance Branch of State Grid Hubei Electric Power Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-04-21

Abstract

The invention discloses a special fixture for ultrasonic detection of a porcelain insulator, which comprises two insulating fixing rods, wherein fixing sleeves are fixedly connected to the two insulating fixing rods, annular tubes are fixedly connected to the fixing sleeves, an installation plate is fixedly connected between the two insulating fixing rods, a compression mechanism is arranged at the bottom side of the installation plate, a plurality of sealing tubes are fixedly connected to the annular tubes, a plurality of sealing sleeves are fixedly communicated with the annular tubes, pressing rods are arranged in the sealing sleeves, and elastic clamping pieces are fixedly connected to one ends of the pressing rods, penetrating through the sealing sleeves. According to the invention, the telescopic cylinder extends, then the first piston block is driven to extrude hydraulic oil in the sealing pipe, the hydraulic oil continuously flows into the annular pipe until the hydraulic oil overflows into the sealing sleeve, the second piston block and the third piston block slide to push the pressing rod to move, the elastic clamping pieces are close to the surface of the insulator to carry out clamping work, and the annular distribution of the elastic clamping pieces carries out multi-directional comprehensive clamping on the insulator.

Description

Porcelain insulator ultrasonic detection special fixture

Technical Field

The invention relates to the technical field of porcelain insulator detection, in particular to a special clamp for porcelain insulator ultrasonic detection.

Background

Porcelain insulators are insulators made of electrical ceramics, and devices which can withstand the action of voltage and mechanical stress are mounted between conductors of different potentials or between a conductor and a grounding member. Insulators are various in types and shapes. Although the structures and the shapes of different types of insulators are greatly different, the insulators are composed of two parts, namely an insulating part and a connecting hardware fitting.

According to the Chinese patent publication numbers: CN205734873U, a porcelain insulator ultrasonic detection special fixture, includes three section pull formula anchor clamps poles, adorns the handle pole admittedly in the bottom of anchor clamps pole, adorns the connecting seat admittedly in the tip one side of the upper segment of anchor clamps pole, wears to adorn the instrument connecting rod through the connecting rod pin on the connecting seat, and this anchor clamps have increased the detection precision, and anchor clamps insulating properties is good, and is small, light in weight, greatly reduced working strength.

However, the clamping contact area between the clamping wall and the insulator is small due to the different sizes of the different porcelain insulators, and when the radius of the insulator is slightly larger, the clamping effect is not ideal.

Disclosure of Invention

The invention aims to solve the defects that clamping contact areas of clamping walls with different sizes of different porcelain insulators and the insulators are small, and when the radius of the insulators is slightly large, the clamping effect is not ideal in the prior art, and provides a special clamp for ultrasonic detection of the porcelain insulators.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a porcelain insulator ultrasonic detection special fixture, includes two insulating dead levers, two equal fixed cover of fixedly connected with on the insulating dead lever, fixed connection has the ring pipe on the fixed cover, two fixedly connected with mounting panel between the insulating dead lever, the mounting panel bottom side is equipped with compressing mechanism, a plurality of sealed tubes of fixedly connected with on the ring pipe, fixed intercommunication has a plurality of seal covers on the ring pipe, be equipped with the depression bar in the seal cover, the one end fixedly connected with elasticity clamping piece that the depression bar passed the seal cover, the one end that the elasticity clamping piece was kept away from to the depression bar is equipped with buffer gear, hydraulic oil has all been annotated in ring pipe, the sealed tube.

Preferably, the compression mechanism comprises a plurality of telescopic cylinders, the telescopic cylinders are symmetrically and fixedly mounted on the bottom side of the mounting plate, the output ends of the telescopic cylinders are fixedly connected with first piston blocks, and the first piston blocks are slidably connected in the sealing pipes.

Preferably, the buffer mechanism comprises a second piston block and a third piston block, the second piston block and the third piston block are both connected in the sealing sleeve in a sliding manner, the second piston block is fixedly connected with the pressure rod, and two springs are fixedly connected between the second piston block and the third piston block.

Preferably, the elastic clamping piece is arranged in an arc shape, and a clamping pad is arranged on the elastic clamping piece.

Preferably, a plurality of the sealing sleeves are distributed in an annular uniform array.

Compared with the prior art, the invention has the beneficial effects that:

1. extend through telescopic cylinder, then drive the hydraulic oil in first piston piece extrusion sealed tube, let hydraulic oil constantly gush into the annular tube, go into in the sealed tube until the overflow, then second piston piece, third piston piece slide and promote the depression bar and remove, and the elasticity clamping piece constantly presses close to the insulator surface and carries out centre gripping work, and the annular of a plurality of elasticity clamping pieces distributes and carries out diversified comprehensive centre gripping to the insulator, and the centre gripping effect is better.

2. When clamping-force is great, the third piston piece can slide relative to the second piston piece to make the spring compress, cushion pressure with the help of the elasticity of spring, prevent that anchor clamps from pressing from both sides the injury to the insulator, and because the elasticity clamping piece has certain elasticity, can produce certain elastic deformation when elasticity clamping piece and insulator contact, make elasticity clamping piece and insulator surface laminating, increased centre gripping area of contact.

Drawings

Fig. 1 is a schematic front structural view of a special fixture for ultrasonic detection of a porcelain insulator, which is provided by the invention;

fig. 2 is a schematic top-down structural view of a ring-shaped pipe in the special fixture for ultrasonic testing of porcelain insulators, which is provided by the invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: 1-insulating fixed rod, 2-mounting plate, 3-telescopic cylinder, 4-annular tube, 5-fixing sleeve, 6-first piston block, 7-sealing tube, 8-hydraulic oil, 9-sealing sleeve, 10-elastic clamping piece, 11-pressure bar, 12-second piston block, 13-spring and 14-third piston block.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, refer to orientations or positional relationships based on those shown in the drawings, and are used only for the purpose of facilitating the description of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Referring to fig. 1-3, a porcelain insulator ultrasonic detection special fixture, including two insulating dead levers 1, equal fixedly connected with fixed cover 5 on two insulating dead levers 1, fixedly connected with ring pipe 4 on fixed cover 5, fixedly connected with mounting panel 2 between two insulating dead levers 1, 2 bottom sides of mounting panel are equipped with compressing mechanism, compressing mechanism includes a plurality of

telescopic cylinder

3, 3 symmetry fixed mounting of a plurality of telescopic cylinder are in 2 bottom sides of mounting panel, telescopic cylinder 3's output fixed connection has first piston piece 6, 6 sliding connection of first piston piece are in seal tube 7, extend through telescopic cylinder 3, then drive the hydraulic oil 8 in the first piston piece 6 extrusion seal tube 7, provide drive power for the centre gripping.

A plurality of sealed tubes 7 of fixedly connected with on the ring pipe 4, fixed intercommunication has a plurality of seal covers 9 on the ring pipe 4, a plurality of seal covers 9 are annular even array distribution, thereby a plurality of pinch points are provided, be equipped with depression bar 11 in the seal cover 9, depression bar 11 passes seal cover 9's one end fixed connection elasticity clamping piece 10, elasticity clamping piece 10 is the arc setting, be equipped with the centre gripping pad on the elasticity clamping piece 10, can produce certain elastic deformation when elasticity clamping piece 10 contacts with the insulator, make elasticity clamping piece 10 and insulator surface laminating, the centre gripping area of contact has been increased.

One end of the pressing rod 11 far away from the elastic clamping piece 10 is provided with a buffer mechanism, the buffer mechanism comprises a second piston block 12 and a third piston block 14, the second piston block 12 and the third piston block 14 are connected in the sealing sleeve 9 in a sliding mode, the second piston block 12 is fixedly connected with the pressing rod 11, two springs 13 are fixedly connected between the second piston block 12 and the third piston block 14, when the clamping force is large, the third piston block 14 can slide relative to the second piston block 12, the springs 13 are compressed, the pressure is buffered by means of the elastic force of the springs 13, the insulator is prevented from being damaged by the clamp, the annular pipe 4 and the sealing pipe 7 are filled with hydraulic oil 8.

In the invention, when a user uses the device, the telescopic cylinder 3 extends to drive the first piston block 6 to extrude hydraulic oil 8 in the sealing pipe 7, the hydraulic oil 8 continuously flows into the annular pipe 4 until the hydraulic oil overflows into the sealing sleeve 9, then the second piston block 12 and the third piston block 14 slide to push the pressure lever 11 to move, the elastic clamping pieces 10 continuously press close to the surface of an insulator to carry out clamping work, the annular distribution of the elastic clamping pieces 10 carries out multi-directional all-side clamping on the insulator, the clamping effect is better, when the clamping force is larger, the third piston block 14 can slide relative to the second piston block 12, so that the spring 13 is compressed, the pressure is buffered by virtue of the elasticity of the spring 13, the clamp is prevented from clamping the insulator, and as the elastic clamping pieces 10 have certain elasticity, certain elastic deformation can be generated when the elastic clamping pieces 10 contact with the insulator, so that the elastic clamping piece 10 is attached to the surface of the insulator, and the clamping contact area is increased.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.

Claims

1. A special clamp for ultrasonic detection of porcelain insulators comprises two insulating fixed rods (1), it is characterized in that the two insulating fixing rods (1) are both fixedly connected with a fixing sleeve (5), the fixed sleeve (5) is fixedly connected with an annular pipe (4), a mounting plate (2) is fixedly connected between the two insulating fixed rods (1), a compression mechanism is arranged at the bottom side of the mounting plate (2), a plurality of sealing pipes (7) are fixedly connected to the annular pipe (4), a plurality of sealing sleeves (9) are fixedly communicated with the annular pipe (4), a pressure rod (11) is arranged in each sealing sleeve (9), one end of the compression bar (11) penetrating through the sealing sleeve (9) is fixedly connected with an elastic clamping piece (10), a buffer mechanism is arranged at one end of the pressure lever (11) far away from the elastic clamping piece (10), hydraulic oil (8) is injected into the annular pipe (4) and the sealing pipe (7).

2. The special fixture for ultrasonic detection of porcelain insulators according to claim 1, wherein the compression mechanism comprises a plurality of telescopic cylinders (3), the telescopic cylinders (3) are symmetrically and fixedly installed on the bottom side of the mounting plate (2), the output ends of the telescopic cylinders (3) are fixedly connected with first piston blocks (6), and the first piston blocks (6) are slidably connected in the sealing pipes (7).

3. The special fixture for ultrasonic detection of porcelain insulators according to claim 1, wherein the buffer mechanism comprises a second piston block (12) and a third piston block (14), the second piston block (12) and the third piston block (14) are both connected in a sealing sleeve (9) in a sliding manner, the second piston block (12) is fixedly connected with a pressure rod (11), and two springs (13) are fixedly connected between the second piston block (12) and the third piston block (14).

4. The special fixture for ultrasonic detection of porcelain insulators according to claim 1, wherein the elastic clamping pieces (10) are arranged in an arc shape, and clamping pads are arranged on the elastic clamping pieces (10).

5. The special fixture for ultrasonic detection of porcelain insulators according to claim 1, wherein a plurality of the sealing sleeves (9) are distributed in an annular uniform array.