CN111446682B - Limiting device - Google Patents
Limiting device Download PDFInfo
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- CN111446682B CN111446682B CN202010236732.6A CN202010236732A CN111446682B CN 111446682 B CN111446682 B CN 111446682B CN 202010236732 A CN202010236732 A CN 202010236732A CN 111446682 B CN111446682 B CN 111446682B
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- Prior art keywords
- frame body
- frame
- face
- cross arm
- limiting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/12—Devices for maintaining distance between parallel conductors, e.g. spacer
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Abstract
The invention provides a limiting device, which is used for erecting a strain insulator on a cross stretcher and comprises: the bottle supporting bracket extends along the horizontal direction and comprises a plurality of supporting grooves which are arranged at intervals along the horizontal direction and used for bearing a plurality of serially connected tension insulators; the limiting frame comprises a first frame body and a second frame body connected with the first frame body in a sliding manner, the first frame body is fixedly connected with the bottle supporting bracket, and the limiting frame also comprises a stop device capable of limiting the relative sliding of the first frame body and the second frame body; wherein, the cross arm frame includes along first cross arm and the second cross arm of horizontal direction spaced apart, and first support body down presses from last to support first cross arm, and when holding in the palm the bottle support and bearing strain insulator, spacing uses first cross arm as the fulcrum rotation and drive second support body bearing second cross arm. By applying the technical scheme, the strain insulator string and the live equipment can be ensured to have enough safety distance.
Description
Technical Field
The invention relates to the field of overhead line construction, in particular to a limiting device.
Background
In the construction of 10 KV distribution network overhead lines, the operation items of installing the conducting wires in an electrified way and tightening the conducting wires in an electrified way are often carried out, and due to the fact that the working items are close to electrified equipment, the strain insulator string and the conducting wires must keep enough safety distance with the electrified equipment, so that the personal safety of rear-end tightening conducting wire operators is guaranteed.
Referring to fig. 1, which shows a schematic diagram of a prior art when a wire 220 is installed, two ends of the wire 220 are respectively provided with insulators 210, the wire 220 is connected between two poles 240, when the wire 220 is not tightened, the tension insulators 210 naturally sag under the influence of gravity, generally, a live device 230 (a high-voltage switch, a cable head, etc.) is installed adjacent to the top end of the pole 240, and the sag of the insulators 210 causes an insufficient safety distance between the wire 220 and the live device 230, which causes a danger.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a limiting device which is used for limiting the position of a tension insulator when the insulator is installed on a live tower, so that the insulator is prevented from naturally sagging under the action of gravity, and is enabled to be too close to a live device, and to have a sufficient safety distance with the live device.
In order to solve the above technical problem, the present invention provides a limiting device for erecting a strain insulator on a cross stretcher, comprising:
the bottle supporting bracket extends along the horizontal direction and comprises a plurality of supporting grooves which are arranged at intervals along the horizontal direction and used for bearing a plurality of serially connected strain insulators;
the limiting frame comprises a first frame body and a second frame body connected with the first frame body in a sliding manner, the first frame body is fixedly connected with the bottle supporting bracket, and the limiting frame further comprises a stop device capable of limiting the relative sliding of the first frame body and the second frame body;
wherein, the cross arm frame includes along first cross arm and the second cross arm of horizontal direction spaced apart, first support body is from last down to press first cross arm, works as the support bottle support bears when strain insulator, spacing with first cross arm is the fulcrum rotation and drives second support body bearing the second cross arm.
Preferably, the stop device includes a rack, a sliding groove, and an anti-slip ratchet, the rack is disposed on one of the first frame and the second frame, the sliding groove and the anti-slip ratchet are disposed on the other of the first frame and the second frame, the rack slides in the sliding groove and makes the second frame approach the first frame, and the anti-slip ratchet is engaged with the rack and limits the second frame to approach the first frame.
Preferably, the stop device further comprises a torsion spring which is propped against the limiting frame and the anti-falling ratchet.
Preferably, first support body includes face, curb plate face and the rack, it is perpendicular and from last down pressing to go up face and curb plate face first crossbearer, hold in the palm the bottle support with go up the face rigid coupling.
Preferably, the second support body includes back face and lower face, the sliding tray sets up down on the face, back face with lower face is perpendicular and bearing the second crossbearer.
Preferably, the lower plate surface and the rack extend in a horizontal direction.
Preferably, the device comprises two parallel limiting frames.
Preferably, the bottle holding bracket comprises two brackets which are arranged at intervals along the horizontal direction.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
in the live working process, when the wire is not installed or tightened, a limiting device is utilized to provide a temporary stress point for the tension insulator, the insulator is in a horizontal state and limits the insulator to be in a natural suspension state, the limiting device can guarantee that the safety distance between the live equipment and the wire is sufficient, and the personal safety of personnel paying off or tightening the wire at the rear part is guaranteed.
Drawings
FIG. 1 is a schematic view of a prior art tension insulator installation;
FIG. 2 is a top view of the limiting device with a tension insulator attached according to the preferred embodiment of the present invention;
FIG. 3 is a schematic sectional view of a stop device in accordance with a preferred embodiment of the present invention;
fig. 4 is a partially enlarged schematic view of a stop device according to a preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.
The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
Referring to fig. 2-4, a limiting device 100 for mounting a tension insulator 210 on a cross stretcher includes: the bottle supporting bracket 1 extends along the horizontal direction 200, and the bottle supporting bracket 1 comprises a plurality of supporting grooves 11 which are arranged at intervals along the horizontal direction 200 and used for bearing a plurality of serially connected strain insulators 210; the bottle supporting device comprises a limiting frame 2, wherein the limiting frame 2 comprises a first frame body 21 and a second frame body 22 connected with the first frame body 21 in a sliding mode, the first frame body 21 is fixedly connected with a bottle supporting frame 1, and the limiting frame 2 further comprises a stop device 23 capable of limiting the relative sliding of the first frame body 21 and the second frame body 22; the cross arm frame comprises a first cross frame 250 and a second cross frame 260 which are spaced apart from each other along the horizontal direction 200, the first frame body 21 presses against the first cross frame 250 from top to bottom, and when the bottle supporting frame 1 bears the tension insulator 210, the limiting frame 2 rotates by taking the first cross frame 250 as a fulcrum and drives the second frame body 22 to bear the second cross frame 260.
In this embodiment, in order to ensure the balance, the two parallel limiting frames 2 are included, and the bottle holding bracket 1 includes two brackets 11 arranged at intervals along the horizontal direction 200.
When strain insulator 210 bears when holding in the palm on the bottle support 1, stop device 100 and the total focus of strain insulator 210 are located hold in the palm on the bottle support 1, under the influence of gravity, spacing 2 with first crossbearer 250 rotates and drives as the fulcrum second support body 22 bearing second crossbearer 260, realizes this moment because of the action of gravity stop device 100's locking on the cross stretcher.
When the worker installs the frame, the worker can adjust the sliding distance between the first frame 21 and the second frame 22 according to the horizontal relative distance between the first cross frame 250 and the second cross frame 260, and limit the relative sliding between the first frame 21 and the second frame 22 through the stop device 23.
The stop means 23 includes a rack 231, a sliding groove 232 and a disengagement preventing ratchet 233, the rack 231 is provided on one of the first and second frames 21 and 22, the slide groove 232 and the escape prevention ratchet 233 are provided on the other one of the first frame body 21 and the second frame body 22, the rack 231 slides in the sliding groove 232 and approaches the second frame 22 toward the first frame 21, the escape prevention ratchet 233 engages with the rack 231 and restricts the second frame body 22 from approaching the first frame body 21, the stop device 23 further comprises a torsion spring 234 abutting against the limiting frame 2 and the anti-falling ratchet 233, the rack 231 is provided with a plurality of positioning ratchets 2311, the positioning ratchet 2311 is inclined toward the first frame 21, and the escape prevention ratchet 233 is disposed in the slide groove 232 and is subjected to a resettable rotation by the torsion spring 234.
When the worker uses the rack, the worker pulls the second frame 22 away from the first frame 21, at this time, the locking ratchet 233 is toggled to rotate because the positioning ratchet 2311 is inclined toward the first frame 21, and when the second frame 22 approaches toward the first frame 21, the locking ratchet 233 is engaged with the rack 231 and restricts the second frame 22 from approaching the first frame 21.
In this embodiment, the rack 231 is disposed on the first frame body 21, and the sliding groove 232 is disposed on the second frame body 22.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (8)
1. The utility model provides a stop device, its is used for erectting strain insulator on horizontal stretcher, its characterized in that includes:
the bottle supporting bracket extends along the horizontal direction and comprises a plurality of supporting grooves which are arranged at intervals along the horizontal direction and used for bearing a plurality of serially connected strain insulators;
the limiting frame comprises a first frame body and a second frame body connected with the first frame body in a sliding manner, the first frame body is fixedly connected with the bottle supporting bracket, and the limiting frame further comprises a stop device capable of limiting the relative sliding of the first frame body and the second frame body;
wherein, the cross arm frame includes along first cross arm and the second cross arm of horizontal direction spaced apart, first support body is from last down to press first cross arm, works as the support bottle support bears when strain insulator, spacing with first cross arm is the fulcrum rotation and drives second support body bearing the second cross arm.
2. The spacing device of claim 1, wherein: the stop device comprises a rack, a sliding groove and an anti-falling ratchet, the rack is arranged on one of the first frame body and the second frame body, the sliding groove and the anti-falling ratchet are arranged on the other one of the first frame body and the second frame body, the rack slides in the sliding groove and enables the second frame body to face the first frame body to be close to the first frame body, and the anti-falling ratchet is embedded in the rack and limits the second frame body to be close to the first frame body.
3. A spacing device as claimed in claim 2, wherein: the stop device also comprises a torsion spring which is propped against the limiting frame and the anti-falling ratchet.
4. A spacing device as claimed in claim 3, wherein: first support body includes face, curb plate face and the rack, it is perpendicular and from last down pressing to go up face and curb plate face first crossbearer, hold in the palm the bottle support with go up the face rigid coupling.
5. The spacing device of claim 4, wherein: the second support body includes back face and lower face, the sliding tray sets up down on the face, back face with the face is perpendicular and bearing down the second crossbearer.
6. The spacing device of claim 5, wherein: the lower plate surface and the rack extend along the horizontal direction.
7. A spacing device according to any of claims 1-6 wherein: the limiting frame comprises two limiting frames which are arranged in parallel.
8. The spacing device of claim 7, wherein: the bottle supporting bracket comprises two supporting grooves which are arranged at intervals along the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010236732.6A CN111446682B (en) | 2020-03-30 | 2020-03-30 | Limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010236732.6A CN111446682B (en) | 2020-03-30 | 2020-03-30 | Limiting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111446682A CN111446682A (en) | 2020-07-24 |
| CN111446682B true CN111446682B (en) | 2021-03-09 |
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ID=71651083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010236732.6A Active CN111446682B (en) | 2020-03-30 | 2020-03-30 | Limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111446682B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623929A (en) * | 2012-04-06 | 2012-08-01 | 辽宁省电力有限公司丹东供电公司 | Multifunctional integral telescopic insulator cradle |
| CN105098655A (en) * | 2015-08-25 | 2015-11-25 | 广东电网有限责任公司惠州供电局 | Strain insulator exchange tool |
| CN108879469A (en) * | 2016-04-26 | 2018-11-23 | 国网江苏省电力有限公司常州供电分公司 | The operational method of charged for replacement 35kV strain insulator string |
| JP2018085811A (en) * | 2016-11-22 | 2018-05-31 | 中国電力株式会社 | Insulator support net |
| CN107706866B (en) * | 2017-11-08 | 2021-02-12 | 江西电力职业技术学院 | Telescopic bracket for insulator string |
-
2020
- 2020-03-30 CN CN202010236732.6A patent/CN111446682B/en active Active
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| Publication number | Publication date |
|---|---|
| CN111446682A (en) | 2020-07-24 |
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