CN209981898U

CN209981898U - Be used for electrified big-tonnage strain insulator cross arm side monolithic insulator yoke plate fixture of changing 550kN

Info

Publication number: CN209981898U
Application number: CN201921059649.5U
Authority: CN
Inventors: 李长武; 黄麟; 李正文; 弓旭强; 孙建强; 邹凯; 王洪武; 王巍; 马大鹏; 杨凤
Original assignee: Charged Operation Branch of Yunnan Power Grid Co Ltd
Current assignee: Charged Operation Branch of Yunnan Power Grid Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-01-21
Anticipated expiration: 2029-07-09

Abstract

The utility model relates to a transmission network overhauls technical field, specifically is a be used for electrified big-tonnage strain insulator cross arm side monolithic insulator yoke plate fixture of changing 550kN, including drawing behind integrated circuit board, closed card, digital display machinery lead screw, digital display hydraulic pressure lead screw. According to the operation method for replacing any single insulator in the middle of the 550kV large-tonnage tension insulator, the digital display transmission network maintenance lead screw is adjusted by tightening the digital display hydraulic lead screw, the two closed clamps are clamped on the suspension insulator steel cap to enable the suspension insulator steel cap to be stressed uniformly, the equivalent value of the force borne by the suspension insulator is transferred to the digital display hydraulic lead screw and the digital display mechanical hydraulic lead screw in a halved manner, an operator takes the suspension insulator to be replaced on the side without the cross arm to be connected with other suspension insulators, replacement of the suspension insulator is completed, the stress of the suspension insulator is halved in the whole replacement process, and the problems that the convex edge of the large-tonnage steel cap is stressed badly, and the 550kV large-tonnage insulator with a bad process cannot be used for replacing any single insulator in the middle by hot-line work are solved.

Description

Be used for electrified big-tonnage strain insulator cross arm side monolithic insulator yoke plate fixture of changing 550kN

Technical Field

The utility model relates to a transmission network overhauls technical field, specifically is a be used for electrified big-tonnage strain insulator cross arm side monolithic insulator yoke plate fixture of changing 550 kN.

Background

At present, a large-tonnage glass insulator is generally adopted by an extra-high voltage and extra-high voltage transmission line as a tension insulator to bear the tension of a large-section wire. At present, the domestic research on replacing the large-tonnage single insulator with electricity mainly aims at the imported large-tonnage insulator with high technology. The 550kV large-tonnage insulator is large in wire tension, the insulator is replaced by a traditional closed type clamp, the process requirement on the insulator is high, and flanges of steel caps contacted by the front clamp must be regular and uniform and have good stress. The insulator with poor process can not be replaced, but the steel cap of the insulator is formed by pouring steel, the flanges of the steel cap are difficult to be regularly unified, and the stress is good. For 550kV large-tonnage insulators with poor process, the traditional operation method is adopted, and the insulator is subjected to overlarge stress in the live replacement process, so that the steel cap of the insulator is cracked. In view of the above, we propose a fixture for live replacement of a single insulator yoke plate on the 550kN large-tonnage tension cross arm side.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for changing 550kN large-tonnage strain insulator cross arm side monolithic insulator yoke plate fixture with electricity to solve the 550kV large-tonnage insulator of the bad technology that proposes in the above-mentioned background art, adopt traditional operation method, change the in-process with electricity, the insulator atress is too big, can cause the problem of the exploding of insulator steel cap.

For realizing the above-mentioned purpose, the utility model provides a be used for electrified change 550kN large-tonnage strain insulator cross arm side monolithic insulator yoke plate fixture, including pulling integrated circuit board, closed card back card, digital display hydraulic lead screw, digital display machinery lead screw, suspension insulator and traction plate, pull the both ends of integrated circuit board and connect digital display hydraulic lead screw respectively, and pull the integrated circuit board card on the traction plate, realize connecting through the insulator steel cap between a plurality of suspension insulators, the insulator steel cap of the suspension insulator of cross arm side is connected to on the traction plate through the bulb link, parallel connection is connected to the other end of digital display hydraulic lead screw, installs a plurality of closed card back cards between the parallel connection of both sides, the card is blocked respectively on waiting to trade the suspension insulator of suspension insulator rear end behind the closed card, digital display machinery lead screw is installed to the other end of parallel connection.

Preferably, the top of the insulator steel cap is provided with a boss, the top of the boss is provided with a positioning groove, one side of the positioning groove is provided with a sliding groove, and the boss is further provided with a groove.

Preferably, the positioning groove is communicated with the sliding groove.

Preferably, a clamping column is mounted at the bottom of the suspension insulator, and a chuck is integrally formed at the bottom of the clamping column.

Preferably, the chuck is in the shape of a circular truncated cone.

Preferably, the chuck and the groove are snap-fitted.

Preferably, the ball head hanging ring comprises a connecting column, the hanging ring is installed at the top of the connecting column, and a connecting disc is arranged at the bottom of the connecting column.

Preferably, the connecting disc and the groove are in clamping fit.

Compared with the prior art, the beneficial effects of the utility model are that: according to the operation method for replacing any single insulator in the middle of the 550kV large-tonnage tension insulator, the digital display transmission network maintenance lead screw is adjusted by tightening the digital display hydraulic lead screw, the two closed clamps clamp the suspension insulator steel cap to enable the suspension insulator steel cap to be stressed uniformly, the equivalent value of the force borne by the suspension insulator is transferred to the digital display hydraulic lead screw and the digital display mechanical hydraulic lead screw in a halving manner, an operator takes the suspension insulator to be replaced on the side of the cross arm to be connected with other suspension insulators, replacement of the suspension insulator is completed, the stress of the suspension insulator is halved in the whole replacement process, the problem that the convex edge of the large-tonnage steel cap is stressed badly, the 550kV large-tonnage insulator with a bad process cannot be used for replacing the single insulator on the side of the cross arm through hot-line work is solved, and power supply reliability is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the suspension insulator of the present invention;

FIG. 3 is a schematic structural view of the insulator steel cap of the present invention;

FIG. 4 is a schematic view of the structure of the clamp column of the present invention;

fig. 5 is a schematic view of the structure of the ball head suspension loop of the present invention.

In the figure: 1. pulling the board card; 2. clamping after closed clamping; 3. a digital display hydraulic screw rod; 4. a digital display mechanical screw rod; 5. A parallel joint; 6. a suspension insulator; 61. clamping the column; 62. a chuck; 7. an insulator steel cap; 71. a boss; 72. positioning a groove; 73. a chute; 74. a groove; 8. a traction plate; 9. a ball head hanging ring; 91. connecting columns; 92. Hanging a ring; 93. and (7) connecting the disc.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

On one hand, the utility model provides a clamp for replacing a single insulator yoke plate on the side of a 550kN large-tonnage tension cross arm in an electrified way, as shown in fig. 1, a traction board card 1, a closed card rear card 2, a digital display hydraulic screw rod 3, a digital display mechanical screw rod 4, a suspension insulator 6 and a traction board 8, wherein two ends of the traction board card 1 are respectively connected with the digital display hydraulic screw rod 3, the traction board card 1 is clamped on a traction board 8, a plurality of suspension insulators 6 are connected through insulator steel caps 7, the insulator steel caps 7 of the suspension insulators to be replaced on the cross arm side are connected to the traction board 8 through ball head hanging rings 9, the other end of a digital display hydraulic screw rod 3 is connected with parallel connectors 5, a plurality of closed card rear cards 2 are installed between the parallel connectors 5 on the two sides, the closed card rear cards 2 are clamped on the suspension insulators 6 clamped at the rear ends of the suspension insulators to be replaced respectively, and a digital display mechanical screw rod 4 is installed at the other end of the parallel connectors 5.

In this embodiment, the traction board card 1 is clamped at the front end of the suspension insulator to be replaced, and two ends of the traction board card 1 are connected to the digital display hydraulic lead screw 3.

Further, the closed type rear clamp 2 is clamped on a first suspension insulator 6 and a third suspension insulator 6 at the rear end of the suspension insulator to be replaced, the parallel connectors 5 are respectively connected with the closed type rear clamp 2 and the digital display mechanical lead screw 4, the digital display mechanical lead screw 4 is adjusted to be stressed in a balanced manner, the stress values of the digital display hydraulic lead screw 3 and the digital display mechanical lead screw 4 are ensured to be equal in real time in the working process, the stress applied to the suspension insulator 6 is transferred to the digital display hydraulic lead screw 3, and an operator takes the suspension insulator to be replaced on the side of the cross arm to be connected with other suspension insulators 6, so that the replacement work of the suspension insulator to be replaced is completed.

It is worth explaining that the digital display hydraulic screw rod 3 and the digital display mechanical screw rod 4 related in the embodiment are the prior art, and do not relate to the improvement of internal structure modules of the digital display hydraulic screw rod 3 and the digital display mechanical screw rod 4, and in the using process, an operator only needs to observe the stress numerical values displayed on the digital display hydraulic screw rod 3 and the digital display mechanical screw rod 4, and the stress values displayed on the digital display hydraulic screw rod 3 and the digital display mechanical screw rod 4 are ensured to be equal.

Example 2

As a second embodiment of the present invention, in order to facilitate the detachment and installation of the plurality of suspension insulators 6, the present invention further improves the insulator steel cap 7, and as a preferred embodiment, as shown in fig. 2 to 4, a boss 71 is installed at the top of the insulator steel cap 7, a positioning groove 72 is opened at the top of the boss 71, a sliding groove 73 is provided at one side of the positioning groove 72, a groove 74 is further opened inside the boss 71, a clamping column 61 is installed at the bottom of the suspension insulator 6, and a clamping chuck 62 is integrally formed at the bottom of the clamping column 61.

In this embodiment, the positioning slot 72 is communicated with the sliding slot 73, and the locking column 61 is slidably engaged with the sliding slot 73, so that the locking column 61 slides into the positioning slot 72 from one side of the sliding slot 73.

Further, the chuck 62 is in a circular truncated cone shape, and the size of the chuck 62 is matched with the size of the groove 74, so that the chuck 62 can be conveniently clamped into the groove 74, the chuck 62 can be fixed in the groove 74, and the suspension insulator 6 can be connected.

Specifically, card post 61 and chuck 62 are integrated into one piece structure, and the card post 61 and chuck 62 of being convenient for are connected closely, can drive chuck 62 through card post 61 and remove simultaneously.

Example 3

As a third embodiment of the present invention, in order to facilitate the mounting of the suspension insulator 6 at the traction plate 8, the present invention is provided with a ball suspension loop 9, the suspension insulator 6 near the cross arm side of the traction board 1 is connected with the traction board 1 through the ball suspension loop 9, the ball suspension loop 9 includes a connection post 91, a suspension loop 92 is mounted on the top of the connection post 91, and a connection plate 93 is disposed on the bottom of the connection post 91.

In this embodiment, the connection post 91 and the connection disc 93 are integrally formed, so that the connection post 91 and the connection disc 93 are integrally connected stably and are not easy to break.

Specifically, the connecting column 91 and the hanging ring 92 are tightly welded, so that the connecting column 91 and the hanging ring 92 are tightly connected, and meanwhile, the hanging ring 92 is conveniently installed on the traction plate 8.

Furthermore, the connecting disc 93 is matched with the groove 74 in a clamping mode, the connecting column 91 is matched with the sliding groove 73 in a sliding mode, and when the connecting column 91 slides into the sliding groove 73, the connecting disc 93 is clamped into the groove 74.

The specific working principle of the operation method for live replacement of the single insulator on the side of the 550kN large-tonnage tension cross arm is as follows: tightening a digital display hydraulic screw rod 3, driving a traction board 1 to move through the digital display hydraulic screw rod 3, driving a traction board 8 to push a ball head hanging ring 9 to fold towards one side of a to-be-replaced suspension insulator by the traction board 1, at the moment, a connecting column 91 at the bottom of the ball head hanging ring 9 slides in a positioning groove 72 at the top of the to-be-replaced suspension insulator, enabling a connecting disc 93 at the bottom of the ball head hanging ring 9 to be abutted to the bottom of a groove 74 at the top of the to-be-replaced suspension insulator, adjusting a digital display mechanical screw rod 4, clamping a boss 71 on a suspension insulator steel cap 7 by two closed type clamping rear clamps 2 to enable the boss to be stressed in a balanced manner, ensuring that the stress values of the digital display hydraulic screw rod 3 and the digital display mechanical screw rod 4 are equal in real time in the working process, enabling the stress value borne by the suspension insulator 6 to be transferred to the digital display hydraulic screw rod 3, taking off the to-be-replaced suspension insulator from the ball head hanging ring 9 by an operator, and the parallel joint 5 is respectively connected with the closed type clamping rear clamp 2 and the digital display mechanical lead screw 4, the digital display mechanical lead screw 4 is adjusted to be stressed in a balanced manner, the stress values of the digital display hydraulic lead screw 3 and the digital display mechanical lead screw 4 are ensured to be equal in real time in the working process, the stress applied to the suspension insulator 6 is transferred to the digital display hydraulic lead screw 3, and an operator takes the suspension insulator to be replaced on the side of the cross arm to be connected with other suspension insulators 6, so that the replacement work of the suspension insulator to be replaced is completed.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a be used for electrified big-tonnage strain insulator cross arm side monolithic insulator yoke plate fixture of 550kN that changes, card (2), digital display hydraulic lead screw (3), digital display machinery lead screw (4), suspension insulator (6) and traction plate (8) behind traction board card (1), closed card, its characterized in that: the two ends of the traction board card (1) are respectively connected with the digital display hydraulic screw rod (3), the traction board card (1) is clamped on the traction board (8), the connection between the suspension insulators (6) is realized through the insulator steel cap (7), the insulator steel cap (7) of the suspension insulator (6) on the cross arm side is connected to the traction board (8) through the ball head hanging ring (9), the other end of the digital display hydraulic screw rod (3) is connected with the parallel connector (5), a plurality of closed card rear cards (2) are installed between the parallel connectors (5) on the two sides, the closed card rear cards (2) are respectively clamped on the suspension insulator (6) at the rear end of the suspension insulator to be replaced, and the digital display mechanical screw rod (4) is installed at the other end of the parallel connector (5).

2. The clamp for charged replacement of the 550kN large-tonnage strain cross arm side monolithic insulator yoke plate according to claim 1, characterized in that: boss (71) are installed at the top of insulator steel cap (7), and constant head tank (72) have been seted up at the top of boss (71), and constant head tank (72) one side sets up and has seted up spout (73), and recess (74) have still been seted up to the inside of boss (71).

3. The clamp for charged replacement of the 550kN large-tonnage strain cross arm side monolithic insulator yoke plate according to claim 2, characterized in that: the positioning groove (72) is communicated with the sliding groove (73).

4. The clamp for charged replacement of the 550kN large-tonnage strain cross arm side monolithic insulator yoke plate according to claim 1, characterized in that: the clamp column (61) is installed at the bottom of the suspension insulator (6), and the chuck (62) is integrally formed at the bottom of the clamp column (61).

5. The clamp for charged replacement of the 550kN large-tonnage strain cross arm side monolithic insulator yoke plate according to claim 4, which is characterized in that: the chuck (62) is in a circular truncated cone shape.

6. The clamp for charged replacement of the 550kN large-tonnage strain cross arm side monolithic insulator yoke plate according to claim 4, which is characterized in that: the chuck (62) and the groove (74) are in snap fit.

7. The clamp for charged replacement of the 550kN large-tonnage strain cross arm side monolithic insulator yoke plate according to claim 1, characterized in that: the ball head hanging ring (9) comprises a connecting column (91), a hanging ring (92) is installed at the top of the connecting column (91), and a connecting disc (93) is arranged at the bottom of the connecting column (91).

8. The clamp for charged replacement of the 550kN large-tonnage strain cross arm side monolithic insulator yoke plate according to claim 7, characterized in that: the connecting disc (93) is matched with the groove (74) in a clamping mode.