CN107611846B - Segmented insulator replacement device and replacement method - Google Patents
Segmented insulator replacement device and replacement method Download PDFInfo
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- CN107611846B CN107611846B CN201710912358.5A CN201710912358A CN107611846B CN 107611846 B CN107611846 B CN 107611846B CN 201710912358 A CN201710912358 A CN 201710912358A CN 107611846 B CN107611846 B CN 107611846B
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Abstract
The invention discloses a power maintenance tool, and particularly relates to an insulator segment replacement device and a replacement method. The invention relates to an insulator segment replacement device which comprises a first end component, a middle clamping component, a bearing component and a tension component, wherein the bearing component comprises a pulley and a pull rope, the pulley is connected with the middle clamping component, one end of the pull rope is connected with the first end component, the other end of the pull rope bypasses the pulley and is connected with the tension component, and the tension component can pull the pull rope, so that tension directed to the first end component by the middle clamping component is applied to the middle clamping component. Based on the segmented replacement device for the insulators, the replacement method provided by the invention can realize segmented multi-piece replacement of the insulator pieces, thereby being beneficial to improving the maintenance work efficiency.
Description
Technical Field
The invention relates to a power maintenance tool, in particular to an insulator segment replacement device and an insulator segment replacement method.
Background
The insulator string is one of the important devices of the transmission line, and is responsible for hanging wires and insulating the iron tower. Once the insulator string is damaged, it needs to be replaced in time. The tension is provided among the insulator sheets on the insulator string, and if the insulator sheets are to be replaced, the tension applied to the insulator sheets to be replaced needs to be removed. The existing insulator sheet replacing method is that two ends of an insulator sheet to be replaced are respectively connected with a closed clamp, hydraulic lead screws are connected to the two closed clamps, the hydraulic lead screws are gradually shortened, and tension on the insulator sheet is removed, so that the insulator sheet can be taken down and replaced. The replacement mode can only be used for replacing a single piece at a time, and has low efficiency.
Disclosure of Invention
The invention aims to overcome the defect of low efficiency in the prior art and provides an insulator segment replacement device and an insulator segment replacement method capable of carrying out segment replacement of an insulator segment.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides an insulator segmentation changing device, including first end subassembly, middle part joint spare, load-carrying assembly and pulling force spare, load-carrying assembly includes pulley and stay cord, and pulley and middle part joint spare link to each other, and stay cord one end links to each other with first end subassembly, and the pulley is walked around to the stay cord other end and is linked to each other with the pulling force spare, and pulling force spare can pull the stay cord to exert the pulling force that is directed to first end subassembly by middle part joint spare to middle part joint spare, first end subassembly and middle part joint spare are used for the joint at the both ends of waiting to change one section insulator.
The first end assembly and the middle clamping piece of the insulator segment replacement device are used for being clamped at two ends of a segment of insulator to be replaced, and tension is applied to the bearing assembly through the tension piece. Because including pulley and stay cord on the load-carrying member, through the effect of pulley, the stay cord that is located the pulley both sides homoenergetic is transmitted and is born the pulling force to make and apply in the pulling force that middle part joint spare received can multiple times pulling force that pulling force spare was applyed to the stay cord, make pulling force spare can satisfy the needs that the insulator sectional type was changed.
As a preferred scheme of the invention, the insulator segment replacement device further comprises a second end component, one end of the tension member is connected with the pull rope, and the other end of the tension member is connected with the second end component.
The insulator subsection replacing device is provided with a second end component, and in use, the second end component can be close to the power transmission iron frame and is connected with the insulator sheet close to the power transmission iron frame, so that the position of the second end component can be relatively fixed. And then one end of the tension member is connected with the pull rope, and the other end of the tension member is connected with the second end assembly, so that the tension member is convenient to fix. In addition, the introduction of the second end assembly allows the tension member to be positioned entirely or partially outside the space defined by the first end assembly and the middle clip, thereby reducing the size constraints on the tension member.
Further, the middle clamping piece is arranged between the first end component and the second end component.
Further, the second end assembly comprises a second clamp, a second clamping space is formed on the second clamp, the second clamp is an end clamp, and the second clamping space is used for being matched with hardware fittings of the insulator string, which are close to one end of the power transmission iron frame.
The second clamping space formed on the second clamping apparatus can be used for connecting the second clamping apparatus with the power transmission iron frame, so that the second clamping apparatus can be well fixed with the power transmission iron frame.
Further, the first end assembly comprises a first clamp, a first clamping space is formed on the first clamp, and the first clamping space is used for being matched with the insulator or fitting of one end, far away from the power transmission iron frame, of the insulator string.
The first end assembly comprises a first clamp, the middle clamping piece and the first clamp are positioned at the middle parts of two ends of the insulator string to be replaced, and the insulator segment replacement device and the insulator sheet are convenient to form quick and stable connection.
Further, the first fixture comprises a rotating plate and a base body, wherein the rotating plate is rotatably connected with the base body, and the rotating plate can be optionally matched with the base body to form a first clamping space.
The rotating plate and the base body are arranged on the first clamp, when the rotating plate and the base body are matched to form a first clamping space, the first clamp can clamp the insulator string, and if maintenance work is completed, the rotating plate is rotated, so that the rotating plate is disengaged from the base body, and the first clamp can be conveniently disassembled.
Further, the first clamp may be an end clamp or a closed clamp. When being used for changing the insulator piece that is located the middle part, first fixture is the closed card. When the insulator sheet at the end is replaced, the first clamp is an end clamp.
Further, the middle clamping piece is provided with a positioning ring which is matched with the pull rope.
The middle clamping piece is provided with the positioning ring, so that the pull rope passes through the positioning ring, and when the device is used, the positioning ring can limit the direction of the pull rope, thereby avoiding the deflection of the pull force on the pull rope and ensuring the reliable use of the insulator segment replacement device.
Further, the pulley and the pull rope form two groups of pulley assemblies, wherein one group of pulley assemblies is connected with the first end assembly, and the other group of pulley assemblies is connected with the middle clamping piece.
The pulley assemblies are arranged on the first end assembly and the middle clamping piece, and the pull rope can be wound on the pulley assemblies for a plurality of circles, so that the bearing limit of the bearing assembly is improved, and the replacement requirement of a plurality of insulator sheets is met.
As a preferred embodiment of the invention, one end of the tension member is connected to the first end assembly, and the other end of the tension member is connected to the pull cord, the tension member being capable of shortening so as to apply a tension force to the middle clamping member directed from the middle clamping member to the first end assembly.
The technical scheme can realize tensile amplification by using the first end assembly and the middle clamping piece, is beneficial to reducing the number of parts of the insulator segment replacement device, reduces the volume and the weight of the insulator segment replacement device, and is convenient to carry.
The replacing method based on the insulator segment replacing device comprises the following steps:
a. arranging a plurality of insulators on the insulator string between the first end assembly and the middle clamping piece, clamping the first end assembly with one end of the insulator string, and clamping the middle clamping piece with the other end of the insulator string;
b. making the pulling rope of the pulling piece exert pulling force;
c. and replacing the insulator sheet between the first end assembly and the middle clamping piece.
By means of the sectional replacement device for the insulators, sectional replacement of the insulator sheets can be achieved, and therefore efficiency of power maintenance work is improved.
In summary, compared with the prior art, the invention has the following beneficial effects:
the pulley combination is used for increasing the tension of the tension piece to the bearing assembly, so that the insulator segment replacement device can simultaneously discharge the interaction force of a plurality of insulator sheets, and the maintenance efficiency is improved.
Description of the drawings:
fig. 1 is a schematic structural diagram of an insulator segment replacement device provided in example 1 according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first fixture according to example 1 of the present invention;
fig. 3 is a schematic structural view of a second fixture according to example 1 of the present invention;
fig. 4 is a schematic view of the structure of the pulley provided in example 1 in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a middle clamping member provided in example 1 according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an apparatus for replacing an insulator segment according to example 1 of the present invention;
fig. 7 is a schematic structural diagram of an insulator segment replacement device according to example 2 of the present invention.
Icon: 1-an insulator segment replacement device; 11-a first end assembly; 12-a second end assembly; 13-a middle clamping piece; 14-a force bearing assembly; 15-pulling force piece; 111-a first fixture; 121-a second fixture; 123-a second connector; 1111-rotating plate; 1113-first connection hole; 1112-a first mounting hole; 1114—a matrix; 1115—a first clamping space; 1211-a second clamping space; 1213-a second mounting hole; 1215-a second connection hole; 132-first catch arm; 134-a second catch arm; 1322-middle connecting hole; 142-pulley assembly; 144-stay cord; 1422-pulley body; 1426-connecting rod; 1424-pulley connection; 1421-pulley connection holes; 1428-retaining ring.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
Referring to fig. 1, the present embodiment provides an insulator segment replacement device 1, where the insulator segment replacement device 1 includes a first end component 11, a second end component 12, a middle clamping component 13, a bearing component 14 and a tension component 15. The first end component 11 and the middle clamping piece 13 are used for being clamped at two ends of a section of insulator to be replaced.
Referring to fig. 2, the first end assembly 11 includes a first clamp 111. The first clamp 111 includes a rotating plate 1111 and a base 1114, the rotating plate 1111 being rotatably coupled to the base 1114, the rotating plate 1111 being capable of selectively cooperating with the base 1114 to form a first clamping space 1115. The rotating plate 1111 and the base 1114 are respectively provided with a first mounting hole 1112, and the rotating plate 1111 and the base 1114 are respectively provided with a first clamping space 1115 at two sides corresponding to the first mounting holes 1112. The first mounting hole 1112 is located corresponding to the middle of the first clamp 111.
The first clamping space 1115 can be used for accommodating an insulator sheet or a hardware fitting connecting plate at one end, far away from the power transmission iron frame, of an insulator string, and connection between the first clamp 111 and the insulator string is achieved through the first mounting hole 1112.
First fixture 111 has first mounting holes 1112 at both ends, and first mounting holes 1112 are configured to be coupled to load bearing assembly 14.
Referring to fig. 3, second end assembly 12 includes a second clamp 121 and a second connector 123. A second clamping space 1211 is formed in the second clamp 121. The second clamping space 1211 is used for connecting with a fitting on the insulator string, which is close to one end of the power transmission iron frame, and the second connecting piece 123 is used for connecting with the insulator string.
Specifically, a second mounting hole 1213 is formed in the middle of the second fixture 121, and the second mounting hole 1213 is used for connecting insulator strings. The second clamp 121 is provided at both ends with second coupling holes 1215, and the second coupling holes 1215 are used to couple with the tension member 15.
In use, the second end assembly 12 is placed on the insulator string near one end of the power transmission cradle so that the position of the second end assembly 12 can remain fixed.
Referring to fig. 5, the middle clamping member 13 includes a first clamping arm 132 and a second clamping arm 134, one end of the second clamping arm 134 is rotatably connected to the first clamping arm 132, and the other end of the second clamping arm 134 is detachably connected to the first clamping arm 132. When the first clamping arm 132 is connected with two ends of the second clamping arm 134, the middle clamping piece 13 can clamp the cement column of the insulator sheet. The first clamping arm 132 has a middle connecting hole 1322 at both ends. The central connection hole 1322 is configured to connect with the load bearing assembly 14.
The load bearing assembly 14 includes a pulley assembly 142 and a pull cord 144.
Referring to fig. 1, in the present embodiment, the pulley assemblies 142 are two pulley groups, and each pulley group 142 includes two pulleys. One pulley assembly 142 is connected to the first end assembly 11, and two pulleys in the pulley assembly 142 are respectively connected to two first connecting holes 1113 in the first fixture 111; another set of pulley assemblies 142 is connected to the middle joint 13, and two pulleys in the set of pulley assemblies 142 are connected to two middle connecting holes 1322 in the middle joint 13, respectively.
Referring to fig. 4, the pulley in the pulley assembly 142 includes a pulley body 1422, a pulley connecting member 1424, a pulley connecting hole 1421, a connecting rod 1426 and a positioning ring 1428.
Specifically, three pulley wheels 1422 are arranged on one pulley in parallel, and the three pulley wheels 1422 are connected through a rear wheel connecting piece. One end of the pulley is provided with a pulley connecting piece 1424, and the pulley connecting piece 1424 is provided with a pulley connecting hole 1421 and a positioning ring 1428.
The positioning ring 1428 is matched with the pull rope 144, and the pull rope 144 passes through the positioning ring 1428 after bypassing the pulley wheel body 1422 and is finally connected with the pulling member 15.
The number of the pulling ropes 144 is two, one of which is engaged with two pulleys located on the left side in the width direction of the insulator segment changing device 1, and the other of which is engaged with two pulleys located on the right side in the width direction of the insulator segment changing device 1.
The tension members 15 are mechanical screw rods, the number of the tension members 15 is two, one end of one tension member 15 is connected with one second connecting hole 1215 on the second clamp 121, and the other end is connected with the corresponding pull rope 144; the other tension member 15 has one end connected to another second connecting hole 1215 of the second clamp 121 and the other end connected to a corresponding pull cord 144.
Referring to fig. 6, the replacing method for replacing the insulator sheet by adopting the insulator segment replacing device 1 provided by the invention comprises the following steps:
a. placing a plurality of insulators on the insulator string between the first end assembly 11 and the middle clamping piece 13, clamping one end of the insulator string with the first end assembly 11, and clamping the other end of the insulator string with the middle clamping piece 13;
b. causing the pull member 15 to pull the cord 144 to apply a pulling force;
c. the insulator sheet between the first end assembly 11 and the middle clip 13 is replaced.
Further, before step b, the method further comprises the following steps:
bfb. the second end assembly 12 is connected to the end of the string near the power transmission cradle, and the tension member 15 is connected to the second end assembly 12.
After step c, the following steps may also be included:
afc. remove insulator segment change apparatus 1.
The working principle and the beneficial effects of the insulator segment replacement device 1 provided by the embodiment of the invention are that;
the first end component 11 and the middle clamping piece 13 of the insulator segment replacement device 1 are used for being clamped at two ends of a segment of insulator to be replaced, and tension is applied to the bearing component 14 through the tension piece 15. Because the bearing assembly 14 comprises the pulleys and the pull ropes 144, the pull ropes 144 positioned at the two sides of the pulleys can transmit and bear the tensile force under the action of the pulleys, so that the tensile force applied to the middle clamping piece 13 can be multiple times of the tensile force applied to the pull ropes 144 by the tensile piece 15, and the tensile piece 15 can meet the requirement of segmented replacement of insulators;
in addition, in order to obtain a larger pulling force, in the insulator segment replacement device 1 provided by the invention, the length shrinkage of the pulling member 15 is several times that of the hydraulic screw rod in the prior art, in order to obtain a better use effect, the mechanical screw rod is selected as the pulling member 15, and meanwhile, the middle clamping member 13 is arranged between the first end component 11 and the second end component 12, so that the length shrinkage of the pulling member 15 is not limited by the length of the insulator sheet to be replaced, and the application range of the insulator segment replacement device 1 is wider.
Example 2
Referring to fig. 7, the present embodiment provides an insulator segment replacement device 1, where the insulator segment replacement device 1 includes a first end component 11, a middle clamping component 13, a bearing component 14 and a tension component 15. Compared with the insulator segment replacement device 1 provided in embodiment 1, the insulator segment replacement device 1 provided in this embodiment is mainly different in that: the insulator segment replacement device 1 provided in this embodiment does not include the second end component 12, one end of the tension member 15 is connected to the pull cord 144, and the other end is connected to the first end component 11; one end of the pull cord 144 is connected to the tension member 15 and the other end is connected to the first end assembly 11 around a pulley on the middle clip 13.
On the basis of the insulator segment replacement device 1 provided in embodiment 1, the insulator segment replacement device 1 provided in this embodiment further has the following beneficial effects:
the second end assembly 12 is eliminated, so that the parts and the volume of the insulator segment replacement device 1 are reduced, and the insulator segment replacement device is convenient to carry in the maintenance process. In addition, when the insulator segment replacement device 1 provided by the embodiment is used for replacing the insulator segment, the step of connecting the second end assembly 12 is omitted, so that the operation is simpler.
It should be noted that: in the present invention, the first clamping device 111 is used to cooperate with the middle clamping device 13 to effectively clamp multiple insulator sheets, so that the structure of the first clamping device 111 may be as described in embodiment 1 and embodiment 2, or may be other structures. For example, when used to replace an insulator sheet located in the middle of an insulator string, the configuration of first clamp 111 may be selected to be an existing closed clamp.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The device for replacing the insulator in a segmented manner is characterized by comprising a first end assembly, a middle clamping piece, a bearing assembly and a tension piece;
the bearing assembly comprises a pulley and a pull rope, the pulley is connected with the middle clamping piece, one end of the pull rope is connected with the first end assembly, and the other end of the pull rope bypasses the pulley and is connected with the tension piece;
the pulling piece can pull the pull rope, so that the pulling force directed to the first end component by the middle clamping piece is applied to the middle clamping piece;
the first end assembly and the middle clamping piece are used for being clamped at two ends of a section of insulator to be replaced;
the tension device further comprises a second end component, one end of the tension piece is connected with the pull rope, and the other end of the tension piece is connected with the second end component;
the middle clamping piece is arranged between the first end component and the second end component;
the second end assembly comprises a second clamp, a second clamping space is formed on the second clamp, the second clamp is an end clamp, and the second clamping space is used for being matched with hardware fittings of the insulator string, which are close to one end of the power transmission iron frame;
the first end assembly comprises a first clamp, a first clamping space is formed on the first clamp, and the first clamping space is used for being matched with an insulator or fitting of one end, far away from the power transmission iron frame, of an insulator string;
and the middle clamping piece is provided with a positioning ring matched with the pull rope.
2. The insulator segment replacement device of claim 1, wherein the first clamp includes a swivel plate and a base, the swivel plate being rotatably coupled to the base, the swivel plate being selectively engageable with the base to form the first clamping space.
3. The insulator segment replacement device of claim 1, wherein the pulleys and pull cords comprise two sets of pulley assemblies, one set of pulley assemblies being connected to the first end assembly and the other set of pulley assemblies being connected to the middle joint.
4. A replacement method, characterized in that the insulator segment replacement device according to any one of claims 1 to 3 is used, comprising the steps of:
a. placing a plurality of insulators on an insulator string between the first end assembly and the middle clamping piece, clamping one end of the insulator string with the first end assembly, and clamping the other end of the insulator string with the middle clamping piece;
b. making the pulling force piece exert pulling force on the pulling rope;
c. and replacing the insulator sheet between the first end assembly and the middle clamping piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710912358.5A CN107611846B (en) | 2017-09-29 | 2017-09-29 | Segmented insulator replacement device and replacement method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710912358.5A CN107611846B (en) | 2017-09-29 | 2017-09-29 | Segmented insulator replacement device and replacement method |
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| Publication Number | Publication Date |
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| CN107611846A CN107611846A (en) | 2018-01-19 |
| CN107611846B true CN107611846B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710912358.5A Active CN107611846B (en) | 2017-09-29 | 2017-09-29 | Segmented insulator replacement device and replacement method |
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| CN (1) | CN107611846B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323694A (en) * | 2019-07-09 | 2019-10-11 | 云南电网有限责任公司带电作业分公司 | A kind of operational method for charged for replacement 550kN large-tonnage strain cross arm side monolithic insulator |
| CN111064115B (en) * | 2019-12-02 | 2020-11-06 | 中国南方电网有限责任公司超高压输电公司百色局 | Rod porcelain insulator replacing device |
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| CN103944107A (en) * | 2014-05-12 | 2014-07-23 | 国家电网公司 | Tool for electrified replacement of 500kV strain insulator string |
| CN106410662A (en) * | 2016-09-13 | 2017-02-15 | 段宏 | Method for replacing two tension insulator strings of 220KV line in power failure |
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| CN102208776A (en) * | 2011-03-22 | 2011-10-05 | 福建省电力有限公司厦门电业局 | Working tool for live-line replacement of insulator chain of triangle link plate hanging point type and working method thereof |
| CN203014262U (en) * | 2012-02-28 | 2013-06-19 | 云南电网公司带电作业分公司 | V-shaped twin insulator string replacement fixture for compact type 500kV transmission line |
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| CN107611846A (en) | 2018-01-19 |
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