CN111711147A - Cable protection device for preventing excessive tension force - Google Patents
Cable protection device for preventing excessive tension force Download PDFInfo
- Publication number
- CN111711147A CN111711147A CN202010574269.6A CN202010574269A CN111711147A CN 111711147 A CN111711147 A CN 111711147A CN 202010574269 A CN202010574269 A CN 202010574269A CN 111711147 A CN111711147 A CN 111711147A
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- China
- Prior art keywords
- cable
- sliding
- connecting seat
- slide
- rail
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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
- H02G7/04—Arrangements or devices for relieving mechanical tension
-
- 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
- H02G7/05—Suspension arrangements or devices for electric cables or lines
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- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
The invention discloses a cable protection device for preventing excessive tension force, and relates to the technical field of power transmission cables. The invention comprises a cable connecting device, a cable sliding device, a cable breaking and closing device and an electric cable; both ends of one section of electric cable are fixedly connected with cable connecting devices; the cable connecting device is fixedly connected with a connecting seat A in the cable breaking device; a fixed seat in the cable breaking device is fixedly arranged on the wire tower; the cable sliding device comprises a sliding rail and a limiting rod; the top of the sliding rail is hinged with the top of the wire tower; the bottom of the slide rail is connected with the peripheral side surface of the limiting rod in a sliding way; the bottom end of the limiting rod is hinged with the bottom of the wire tower; one end of the slide chain is in sliding fit with the peripheral side surface of the slide rail. Through the cable connecting device, the cable sliding device and the cable breaking and closing device, when extreme weather and wind speed early warning is carried out, the electric cable can be prevented from being broken due to overlarge tensioning force in extreme weather, and the cable breaking and closing device has the advantages of protecting the safety of a line and improving property safety guarantee.
Description
Technical Field
The invention belongs to the technical field of power transmission cables, and particularly relates to a cable protection device capable of preventing excessive tension.
Background
Current power transmission cables are typically of a relatively long length, resulting in a heavy load on the power transmission cable, which in turn also places relatively large demands on the strength of the cable.
For example, when the wind speed in extreme weather is very high, the wind speed affects the cable such as swinging, so that the tensioning force of the power transmission cable is relatively high, and the power transmission cable is often easily subjected to relatively high impact in a short time, so that the phenomenon of breaking due to the excessively high tensioning force and the serious consequences of collapse of the tower, such as personnel injury and the like easily caused by the breaking of the cable during line throwing, occur; all of which can cause serious property damage.
Aiming at the defects, under the action of the cable connecting device, the cable falling device and the cable breaking and closing device, when the load on the cable in extreme weather is close to the maximum load, the push rod motor is controlled to slide and push out the connecting seats A at the two ends of the cable, so that the connecting seats A and the connecting seats B are separated, and the connecting seats A slide from the top end to the bottom end of the sliding rail by means of the sliding chain; the sliding rail bottom ends at the two sides of the electric cable can slide towards the middle for a distance, and the sliding rail bottom ends are lower than the ground, so that a large part of the middle of the electric cable is in a contact state with the ground, and the problems that the electric cable is broken due to overlarge tensioning force in extreme weather, personnel are easily injured when the electric cable is thrown due to breakage, and the like, and even the serious consequence that a tower collapses are solved.
When the electric cable slides off the slide rail, the slide chains at two ends of the electric cable slide on the slide rail, so that the phenomenon of wire throwing is avoided; namely, the driving in and the enclosure are forbidden only in the close region under the electric cable and near the electric cable and in the extreme weather of a small range; the defined range is far smaller than the dangerous area generated by the wire throwing relative to the area which can be reached by the wire throwing.
Disclosure of Invention
The invention aims to provide a cable protection device capable of preventing excessive tension force, which solves the problems that an electric cable is broken due to excessive tension force in extreme weather, personnel are easily injured when the electric cable is thrown due to breakage, and even a serious consequence that a tower frame collapses is caused by the breakage of the electric cable through the actions of a cable connecting device, a cable sliding device and a cable breaking and closing device.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a cable protection device for preventing excessive tension force, which comprises a cable connecting device, a cable sliding device, a cable breaking and closing device and an electric cable; both ends of one section of the electric cable are fixedly connected with cable connecting devices; the cable connecting device is fixedly connected with a connecting seat A in the cable breaking device; the cable breaking and closing device comprises a connecting seat A, a connecting seat B and a separating device; the connecting seat A and the connecting seat B are both J-shaped structures; the connecting seat A and the connecting seat B are in sliding connection; a slide chain is fixed on the side surface of the connecting seat A; the separating device comprises a fixed seat and a push rod motor; a push rod motor is fixedly arranged on one surface of the fixed seat; the connecting seat B is fixedly connected with the fixed seat; a push rod of the push rod motor penetrates through the fixed seat and is in contact with the side surface of the connecting seat A; a fixed seat in the cable breaking device is fixedly arranged on the wire tower; the cable sliding device comprises a sliding rail and a limiting rod; the top of the sliding rail is hinged with the top of the wire tower; the bottom of the slide rail is connected with the peripheral side surface of the limiting rod in a sliding manner; the bottom end of the limiting rod is hinged with the bottom of the wire tower; one end of the slide chain is in sliding fit with the peripheral side surface of the slide rail;
according to the invention, under the action of the cable connecting device, the cable sliding device and the cable breaking and closing device, when the load on the cable in extreme weather is close to the maximum load, the push rod motor is controlled to slide and push out the connecting seats A at the two ends of the cable, so that the connecting seats A and the connecting seats B are separated, and the connecting seats A slide from the top end to the bottom end of the sliding rail by means of the sliding chain; the sliding rail bottom ends at the two sides of the electric cable can slide towards the middle for a distance, and the sliding rail bottom ends are lower than the ground, so that a large part of the middle of the electric cable is in a contact state with the ground, and the problems that the electric cable is broken due to overlarge tensioning force in extreme weather, personnel are easily injured when the electric cable is thrown due to breakage, and the like, and even the serious consequence that a tower collapses are solved. When the electric cable slides off the slide rail, the slide chains at two ends of the electric cable slide on the slide rail, so that the phenomenon of wire throwing is avoided; namely, the driving in and the enclosure are forbidden only in the close region under the electric cable and near the electric cable and in the extreme weather of a small range; the defined range is far smaller than the dangerous area generated by the wire throwing relative to the area which can be reached by the wire throwing.
Further, before the control push rod motor slides out the connecting seat a at both ends of the electric cable, the line where the electric cable is located needs to be powered off in advance to ensure safe operation.
Further, the cable connecting device is connected with the electric cable through a splicing/parallel groove clamp.
Furthermore, a guide block is fixed at one end of the slide chain; the guide block is in sliding fit with the peripheral side face of the slide rail.
Furthermore, a sliding channel is formed in the peripheral side face of the limiting rod; the top end of the limiting rod is provided with a limiting block; the limiting block is positioned at one end of the sliding channel; the purpose of stopper lies in, ensures that the slide rail bottom can not break away from in the slide channel way, can very big reduction get rid of the line and get rid of the regional scope that the line can reach.
Further, the slide rail comprises a slide rail A and a slide rail B; the included angle between the slide rail A and the horizontal plane is 0-45 degrees; the included angle between the sliding rail B and the horizontal plane is 45-90 degrees; the sliding rail A aims to reduce the distance between two ends of the electric cable when the electric cable initially slides down due to the fact that the electric cable is in a tight state before sliding down and the sliding rail A needs to be in a state close to the horizontal state, so that the tensioning force of the electric cable when the electric cable slides down is reduced, and the resistance of a sliding chain when the sliding chain slides down can also be reduced; the sliding rail B mainly reduces the height in the sliding process, and the distance between two ends of an electric cable in the horizontal direction is not changed or is changed to be smaller; the subsequent installation work of the installer is facilitated; particularly, the installation work between the two wire towers is difficult to be performed on rugged mountain roads and the like.
The invention has the following beneficial effects:
through the effects of the cable connecting device, the cable sliding device and the cable breaking-closing device, when extreme weather and wind speed early warning is carried out, the situations that the electric cable is broken due to overlarge tensioning force in extreme weather, personnel are easily injured when the electric cable is thrown due to breakage and the like, and even serious consequences of tower collapse are caused can be avoided; particularly aiming at the area where the electric cable frequently breaks due to overlarge swinging and tensioning force; the method has the advantages of protecting the safety of the line and improving the property safety guarantee.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of an over-tension cable protection device and a cable tower according to the present invention;
FIG. 2 is a schematic view of the cable protector for preventing excessive tension according to the present invention;
FIG. 3 is a schematic view of the cable connecting device and the cable disconnecting and connecting device, and the electric cable;
FIG. 4 is a schematic structural view of a slide rail and a stop lever;
in the drawings, the components represented by the respective reference numerals are listed below:
1-cable connection device, 2-cable slide-down device, 3-cable breaking-closing device, 4-electric cable, 5-electric wire tower, 201-slide rail, 202-limiting rod, 203-slide channel, 204-limiting block, 205-slide rail A, 206-slide rail B, 301-connecting seat A, 302-connecting seat B, 303-separating device, 304-slide chain, 305-fixing seat, 306-push rod motor, 307-guide block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1-4, the invention relates to a cable protection device for preventing excessive tension, which comprises a cable connecting device 1, a cable sliding device 2, a cable breaking and closing device 3 and an electric cable 4; both ends of a section of electric cable 4 are fixedly connected with cable connecting devices 1; the cable connecting device 1 is fixedly connected with a connecting seat A301 in the cable on-off device 3;
the cable breaking device 3 comprises a connecting socket A301, a connecting socket B302 and a separating device 303; connecting seat A301 and connecting seat B302 are both J-shaped structures; connecting seat A301 and connecting seat B302 in a sliding manner; a slide chain 304 is fixed on the side surface of the connecting seat A301; the separating device 303 comprises a fixed seat 305 and a push rod motor 306; a push rod motor 306 is fixedly arranged on one surface of the fixed seat 305; the connecting seat B302 is fixedly connected with the fixed seat 305; a push rod of the push rod motor 306 penetrates through the fixed seat 305 and is contacted with the side surface of the connecting seat A301;
the fixed seat 305 in the cable breaking and closing device 3 is fixedly arranged on the wire tower 5;
the cable sliding device 2 comprises a sliding rail 201 and a limiting rod 202; the top of the sliding rail 201 is hinged with the top of the wire tower 5; the bottom of the slide rail 201 is connected with the peripheral side surface of the limiting rod 202 in a sliding manner; the bottom end of the limiting rod 202 is hinged with the bottom of the wire tower 5;
one end of the slide chain 304 is in sliding fit with the peripheral side surface of the slide rail 201;
according to the invention, under the action of the cable connecting device 1, the cable sliding device 2 and the cable switching-off device 3, when the load on the cable in extreme weather is close to the maximum load, the push rod motor 306 is controlled to slide and push out the connecting seat A301 at two ends of the electric cable 4, so that the connecting seat A301 is separated from the connecting seat B302, and the connecting seat A301 slides from the top end to the bottom end of the sliding rail 201 by means of the sliding chain 304; wherein because the slide rail 201 bottom of electric cable 4 both sides can slide a distance and slide rail 201 bottom apart from ground lower to the centre, also make a middle most of electric cable 4 all be in contact state with ground to electric cable 4 breaks because of the too big and cracked of tensioning dynamics, and electric cable 4 is because of breaking and is easy to injure personnel etc. when throwing away the line that leads to the fact, sends out the problem of the serious consequence that the pylon collapsed to extremely when breaking. When the electric cable 4 slides off the slide rail 201, the slide chains 304 at the two ends of the electric cable 4 slide on the slide rail 201, so that the phenomenon of wire throwing is avoided; namely, the driving in and the enclosure are forbidden only in the close region under the electric cable 4 and near the lower part when the extreme weather in a small range is defined; the defined range is far smaller than the dangerous area generated by the wire throwing relative to the area which can be reached by the wire throwing.
Preferably, before the push rod motor 306 is controlled to slide and push out the connection seats a301 at the two ends of the electric cable 4, the power-off process needs to be performed on the line where the electric cable 4 is located in advance to ensure safe operation.
Preferably, the cable connection device 1 and the electric cable 4 are connected by a splice/parallel groove clamp.
Preferably, a guide block 307 is fixed at one end of the slide chain 304; the guide block 307 is in sliding fit with the peripheral side surface of the slide rail 201.
Preferably, the peripheral side surface of the limit rod 202 is provided with a sliding channel 203; the top end of the limiting rod 202 is provided with a limiting block 204; the stopper 204 is located at one end of the sliding channel 203; the purpose of the limiting block 204 is to ensure that the bottom end of the sliding rail 201 does not break away from the sliding groove 203, so as to greatly reduce the wire throwing and the area range that the wire throwing can reach.
Preferably, the slide rail 201 includes a slide rail a205 and a slide rail B206; the included angle between the sliding rail A205 and the horizontal plane is 0-45 degrees; the included angle between the sliding rail B206 and the horizontal plane is 45-90 degrees; the purpose of the sliding rail a205 is that, before sliding down, the electric cable 4 is in a tight state, and the sliding rail a205 needs to be in a state close to horizontal, so that when initially sliding down, the distance between the two ends of the electric cable 4 is reduced, the tension of the electric cable 4 during sliding down is reduced, and the resistance of the sliding chain 304 during sliding down can also be reduced; the purpose of the sliding rail B206 is to mainly reduce the height during the sliding process, and the distance between the two ends of the electric cable 4 in the horizontal direction is not changed or is changed less; the subsequent installation work of the installer is facilitated; particularly, the two wire towers 5 are difficult to be installed and extended on rugged mountain roads and the like.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a prevent cable protection device that tensile force degree is too big which characterized in that: the cable connecting device comprises a cable connecting device (1), a cable sliding device (2), a cable breaking and closing device (3) and an electric cable (4);
both ends of one section of the electric cable (4) are fixedly connected with cable connecting devices (1); the cable connecting device (1) is fixedly connected with a connecting seat A (301) in the cable on-off device (3);
the cable on-off device (3) comprises a connecting seat A (301), a connecting seat B (302) and a separating device (303); the connecting seat A (301) and the connecting seat B (302) are both J-shaped structures; the connecting seat A (301) is in sliding connection with the connecting seat B (302); a slide chain (304) is fixed on the side surface of the connecting seat A (301); the separating device (303) comprises a fixed seat (305) and a push rod motor (306); a push rod motor (306) is fixedly arranged on one surface of the fixed seat (305); the connecting seat B (302) is fixedly connected with the fixed seat (305); a push rod of the push rod motor (306) penetrates through the fixed seat (305) and is in contact with the side surface of the connecting seat A (301);
a fixed seat (305) in the cable on-off device (3) is fixedly arranged on the wire tower (5);
the cable sliding device (2) comprises a sliding rail (201) and a limiting rod (202); the top of the sliding rail (201) is hinged with the top of the wire tower (5); the bottom of the slide rail (201) is connected with the peripheral side surface of the limiting rod (202) in a sliding manner; the bottom end of the limiting rod (202) is hinged with the bottom of the wire tower (5);
one end of the slide chain (304) is in sliding fit with the peripheral side surface of the slide rail (201).
2. An anti-overstretch cable protection device according to claim 1, characterized in that the cable connection device (1) is connected to the electrical cable (4) by means of a splice/parallel groove clamp.
3. The cable protector against excessive tension according to claim 1, characterized in that a guide block (307) is fixed to one end of the slide chain (304); the guide block (307) is in sliding fit with the peripheral side face of the slide rail (201).
4. The cable protection device for preventing the excessive tension according to claim 1, wherein a sliding channel (203) is formed on the peripheral side surface of the limiting rod (202); the top end of the limiting rod (202) is provided with a limiting block (204); the limiting block (204) is positioned at one end of the sliding channel (203).
5. The cable protection device against excessive tension according to claim 1, wherein the sliding rail (201) comprises a sliding rail a (205) and a sliding rail B (206); the included angle between the sliding rail A (205) and the horizontal plane is 0-45 degrees; the included angle between the sliding rail B (206) and the horizontal plane is 45-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010574269.6A CN111711147A (en) | 2020-06-22 | 2020-06-22 | Cable protection device for preventing excessive tension force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010574269.6A CN111711147A (en) | 2020-06-22 | 2020-06-22 | Cable protection device for preventing excessive tension force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111711147A true CN111711147A (en) | 2020-09-25 |
Family
ID=72542631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010574269.6A Withdrawn CN111711147A (en) | 2020-06-22 | 2020-06-22 | Cable protection device for preventing excessive tension force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111711147A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310918A (en) * | 2020-10-27 | 2021-02-02 | 安徽山巅电力科技有限公司 | Too big take-up unit of buffering tensile force for cable |
| CN113979236A (en) * | 2021-10-12 | 2022-01-28 | 安徽顺开电气有限公司 | Buffering anti-pulling device for power cable |
-
2020
- 2020-06-22 CN CN202010574269.6A patent/CN111711147A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310918A (en) * | 2020-10-27 | 2021-02-02 | 安徽山巅电力科技有限公司 | Too big take-up unit of buffering tensile force for cable |
| CN113979236A (en) * | 2021-10-12 | 2022-01-28 | 安徽顺开电气有限公司 | Buffering anti-pulling device for power cable |
| CN113979236B (en) * | 2021-10-12 | 2023-06-09 | 安徽顺开电气有限公司 | Buffering and anti-pulling device for power cable |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200925 |