CN107425469B - Insulator assembling and disassembling claw and assembling and disassembling device thereof - Google Patents
Insulator assembling and disassembling claw and assembling and disassembling device thereof Download PDFInfo
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- CN107425469B CN107425469B CN201710492002.0A CN201710492002A CN107425469B CN 107425469 B CN107425469 B CN 107425469B CN 201710492002 A CN201710492002 A CN 201710492002A CN 107425469 B CN107425469 B CN 107425469B
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- insulator
- claw
- disassembling
- assembling
- tooth
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- Electric Cable Installation (AREA)
Abstract
The embodiment of the application provides an insulator assembling and disassembling claw and an insulator assembling and disassembling device. The insulator assembling and disassembling claw comprises a connecting screw rod, a bulge, a rotary fixing ring, claw teeth and a fixing ring. The claw teeth, the fixed tooth ring and the steel cap are abutted or far away through the matched movement of the connecting screw rod and the rotary fixed ring, so that the insulator is gripped and released. The insulator assembling and disassembling claw and the insulator assembling and disassembling device are used for ground potential operation, namely, operators are at the ground potential, and the insulator assembling and disassembling work is completed through the insulating operation rod. Compared with the insulator assembly and disassembly in equipotential operation or power failure operation, the insulator assembly and disassembly claw and the assembly and disassembly device thereof provided by the application are used for ground potential operation, so that the operation risk in equipotential operation is avoided, and the power supply reliability of a power transmission line is improved.
Description
Technical Field
The application relates to the field of tools for replacing insulators in power transmission lines, in particular to an insulator assembling and disassembling claw and an insulator assembling and disassembling device.
Background
The strain insulator string is an insulating part widely applied to the overhead line of a power transmission line, and is used for connecting a power transmission line wire with a cross arm and insulating the power transmission line wire from a pole tower. If the strain insulator string is damaged, the normal operation of the power transmission line where the strain insulator string is located is affected. The method requires the electric power staff to replace the damaged strain insulator string in time, namely, the old strain insulator string is removed, and a new strain insulator string is installed, so that the normal operation of the power transmission line is ensured.
Currently, when the tension insulator is replaced, the position of the tension insulator needs to be considered, for example, if a 220V common-tower double-circuit straight-line lower-phase tension insulator string is replaced, an equipotential operation method can be adopted, namely an operator enters an electric field, and the tension insulator is directly replaced. If 220V strain insulator strings with middle phase or upper phase in double-loop straight lines of the same tower are replaced, particularly the tower type with outward corners and larger corners, the problem of insufficient safety distance exists in the process of feeding the equipotential electrician into an electric field, so that an equipotential operation method cannot be adopted, and power failure operation is necessary. The power failure operation is adopted to directly influence the power supply reliability of the power transmission line, and meanwhile, the use efficiency of the power equipment is reduced.
Disclosure of Invention
The application provides an insulator assembling and disassembling claw and an insulator assembling and disassembling device, which are used for solving the problems that in the prior art, a power failure operation is required to be adopted for replacing a tension insulator in a middle phase or an upper phase, so that the power supply reliability of a power transmission line and the service efficiency of power equipment are reduced.
In a first aspect, the application provides an insulator assembling and disassembling claw, which comprises a connecting piece and a gripping piece, wherein the connecting piece comprises a connecting screw rod, one end of the connecting screw rod is fixedly provided with a bulge, and the bulge is used for clamping a steel cap bowl head of an insulator;
the shape of the gripping piece is matched with the shape of a steel cap of the insulator, the gripping piece comprises a rotary fixing ring, and the rotary fixing ring is in threaded connection with the connecting screw rod;
the gripping member further comprises at least three claw teeth, each claw tooth is fixedly connected with the rotary fixing ring; the plurality of claw teeth at least comprise one main tooth, and the main tooth is used for abutting against the locking pin of the insulator.
Preferably, the grip further comprises a stationary toothed ring for securing the teeth to the rotating stationary ring.
Preferably, the shape of the gripping member matches the shape of the steel cap of the insulator, including in particular,
the outer supporting included angle of each claw tooth is matched with the shape of the steel cap of the insulator, and the outer supporting included angle of each claw tooth is an included angle between the claw tooth and the axis of the connecting screw rod;
the inner diameter of the fixed tooth ring is matched with the outer diameter of the steel cap of the insulator.
Preferably, the gripping member comprises three teeth, one of which comprises a primary tooth and two secondary teeth.
Preferably, the included angle of the outer struts of each claw tooth is 25 °.
In a second aspect, the application further provides an insulator assembling and disassembling device.
The insulator assembling and disassembling device comprises the insulator assembling and disassembling claw and the insulating operation rod, and the insulator assembling and disassembling claw is detachably connected with the insulating operation rod.
Preferably, the insulator assembling and disassembling claw is detachably connected with the insulating operation rod, and specifically comprises that the insulator assembling and disassembling claw is connected with the insulating operation rod through threads.
As can be seen from the above technical solutions, the embodiments of the present application provide an insulator assembling and disassembling claw and an insulator assembling and disassembling device, where the insulator assembling and disassembling device includes an insulator assembling and disassembling claw and an insulating operation rod, and the insulator assembling and disassembling claw is made to grasp or release an insulator by controlling the insulating operation rod, so that the insulator assembling and disassembling device is used in an insulator assembling or disassembling process. The insulator assembling and disassembling claw comprises a connecting screw rod, a bulge, a rotary fixing ring, claw teeth and a fixing ring. The claw teeth, the fixed tooth ring and the steel cap of the insulator are abutted or separated by the cooperation movement of the connecting screw rod and the rotary fixed ring, so that the insulator is gripped and released. The insulator assembling and disassembling claw and the insulator assembling and disassembling device are used for ground potential operation, namely, operators are at the ground potential, and the insulator assembling and disassembling work is completed through the insulating operation rod. Compared with the insulator assembly and disassembly in equipotential operation or power failure operation, the insulator assembly and disassembly claw and the assembly and disassembly device thereof provided by the application are used for ground potential operation, so that the operation risk in equipotential operation is avoided, and the reliability of power supply of a power transmission line and the use efficiency of power equipment are improved.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural view of an insulator;
fig. 2 is a schematic structural view of an insulator dismounting claw;
FIG. 3 is a view of the grip member being moved away from the steel cap;
FIG. 4 is a view of the grip in a state of interference with the steel cap;
the reference numerals in fig. 1-4 are respectively denoted as: 1-umbrella skirt, 2-steel cap, 21-steel cap bowl head, 22-locking pin, 3-ball head, 4-connector, 41-connection screw rod, 42-protrusion, 5-grip piece, 51-rotation fixing ring, 52-claw tooth, 521-main tooth, 522-auxiliary tooth, 53-fixed tooth ring, 54-connecting arm and 6-insulation operating rod.
Detailed Description
The application provides an insulator assembling and disassembling claw and an insulator assembling and disassembling device, which are used for assembling or disassembling an insulator. Fig. 1 is a schematic structural diagram of an insulator, as shown in fig. 1, the insulator comprises a ball head 3, an umbrella skirt 1 and a steel cap 2, the steel cap 2 is in a conical shape, and a conical angle of the steel cap 2 is defined as a first included angle. One end of the steel cap 2, which is not connected with the umbrella skirt 1, is the top end of the steel cap, the other end is the bottom end of the steel cap, the top end of the steel cap is provided with a steel cap bowl head 21, the steel cap bowl head 21 is a U-shaped clamping groove, and the steel cap bowl head 21 is used for clamping the ball head 3 of the other insulator, so that the connection between the two insulators is completed. The insulator also includes a locking pin 22, which may include an R-shaped pin, an M-shaped pin, or the like.
Fig. 2 is a schematic structural view of an insulator assembling and disassembling claw, as shown in fig. 2, the insulator assembling and disassembling claw includes a connecting piece 4 and a gripping piece 5, the connecting piece 4 includes a connecting screw 41, one end of the connecting screw 41 is fixedly provided with a protrusion 42, and the protrusion 42 is used for being clamped in a steel cap bowl head 21 of an insulator. In order to firmly clamp the bulge 42 with the steel cap bowl head 21, the bulge 42 should be matched with the steel cap bowl head 21, namely, the bulge 42 is consistent with the shape and the size of the bulb 3 of the insulator.
The gripping member 5 is used for gripping the insulator, and the gripping member 5 can be implemented in various manners, and in the present application, the gripping member 5 includes a claw 52 fixedly connected with a rotating fixing ring 51. The rotary fixing ring 51 is screwed with the connecting screw 41, and the connecting screw 41 is rotated to cause the rotary fixing ring 51 to move relative to the connecting screw 41, thereby causing the claw 52 to move on the connecting screw 41 in the axial direction of the connecting screw 41. When the claw 52 moves to interfere with the steel cap 2, the claw 52 will apply a gripping force to the insulator at the steel cap 2. At this time, if the claw 52 is displaced, the insulator is driven to move together with the claw.
To ensure that the tines 52 have a sufficiently large grip on the insulator, the number of tines 52 is at least three. In the present application, the number of the claws 52 is three, and the three claws 52 are uniformly provided on the rotation fixing ring 51. Of course, the number of the claw teeth 52 can be adjusted according to actual needs by those skilled in the art, for example, 4, 5 or 6, which are all within the scope of protection in the art.
At least one of the plurality of teeth 52 includes a primary tooth 521, and the other teeth 52 are secondary teeth 522. In the present application, one main tooth 521 is provided, and of course, a person skilled in the art can adjust the number of main teeth 521 without affecting the use and effect of the insulator assembling and disassembling claw. In the present application, the main tooth 521 is used not only for grasping the insulator but also for interfering with the locking pin 22 of the insulator. When the connecting screw 41 is rotated, the locking pin 22 restricts the rotation of the grip 5, so that the connecting screw 41 and the grip 5 are relatively moved. Here, the main tooth 521 collides with the lock pin 22, and the length of the main tooth is as follows: after the insulator assembling and disassembling claw is connected with the insulator, the screw rod is rotationally connected or the fixing ring is rotated, so that the claw teeth and the insulator move relatively, and when the relative distance between the claw teeth and the insulator reaches the maximum, the main teeth still can collide with the locking pins.
The secondary teeth 522 have a shorter length than the primary teeth 521 and function to grip the insulator without interfering with the locking pin 22.
In combination with the size of the insulator steel cap 2, the length of the main tooth 521 is 5.0-6.0cm, and the length of the auxiliary tooth 522 is 3.5-4.5cm. In this example, the primary tooth 521 has a length of 5.6cm and the secondary tooth 522 has a length of 3.6cm.
In order to improve the gripping force of the gripping member 5 on the insulator, in this embodiment, the gripping member 5 further includes a tooth fixing ring 53, and the tooth fixing ring 53 is fixedly connected with the rotating fixing ring 51. In the present application, the fixed ring gear 53 is fixedly connected to the rotating fixed ring 51 by a connecting arm 54. The tooth fixing ring 53 is used for fixing the claw 52 on one hand, and on the other hand, the tooth fixing ring 53 is also used for clamping the steel cap 2 when the tooth fixing ring is in contact with the steel cap 2 of the insulator, so that the insulator is gripped.
The insulator assembling and disassembling claw is a device which is particularly used for insulators, and in order to achieve the purpose of gripping, the shape of the gripping piece 5 is matched with that of the insulator steel cap 2. Specifically, the outer supporting included angle of the claw teeth 52 is matched with the shape of the steel cap 2 of the insulator, and the inner diameter of the tooth fixing ring 53 is matched with the outer diameter size of the steel cap 2. First, the fixed angle of the claw 52 is matched with the shape of the insulator steel cap 2, and the external supporting included angle of the claw 52 is matched with the cone angle of the steel cap 2, wherein the external supporting included angle of the claw 52 is the included angle between the claw 52 and the axis of the connecting screw 41. The outer supporting included angle of the claw teeth 52 is 20-30 degrees in combination with the appearance and the size of the insulator steel cap 2. In the present application, the outer support angle of the pawl 52 is set to 25 °.
The inner diameter of the fixed tooth ring 53 is matched with the outer diameter of the steel cap 2, when the fixed tooth ring 53 is tightly abutted against the steel cap 2, the fixed tooth ring 53 will undergo a tiny deformation expanding outwards, and the tiny deformation will cause the fixed tooth ring 53 to apply a clamping force to the steel cap 2, and under the action of the clamping force, the fixed tooth ring 53 realizes the fastening and holding of the insulator. When the fixed tooth ring 53 is displaced, the fixed tooth ring 53 drives the insulator to move together. The value of the inner diameter of the fixed tooth ring 53 is in the range of 4cm-5cm in combination with the size of the insulator steel cap 2. In the present application, the inner diameter of the stationary ring gear 53 is 4.5cm.
The application further comprises an insulator dismounting device which comprises the insulator dismounting claw and the insulating operation rod 6, and the insulator dismounting claw is detachably connected with the insulating operation rod 6. There are various forms of detachable connection, and in the present application, the insulator attaching/detaching claw is connected with the insulating operation rod 6 by screw threads. When the insulator is actually assembled or disassembled, the insulating operation rods 6 with different lengths can be replaced according to actual needs.
Hereinafter, a process of removing the insulator by the insulator mounting and dismounting device will be described.
First, an operating insulating rod of an appropriate length is selected according to a specific position of an insulator to be disassembled, and an insulator attaching/detaching claw is mounted on the insulating operating rod 6, so that the insulating operating rod 6 and the connecting screw 41 are referred to as one body. Rotating the insulating operation rod 6 will drive the connection screw 41 to perform synchronous movement, for example, when the insulating operation rod 6 rotates, the connection screw 41 rotates synchronously with it; when the insulating operation rod 6 moves linearly, the connecting screw 41 moves synchronously with it.
Then, the connecting screw 41 or the grip 5 is rotated so that the grip 5 is moved on the connecting screw 41 to the end closest to the insulating operation rod 6 even if the protrusion 42 on the connecting screw 41 is maximally exposed.
Of course, the two steps can be exchanged without affecting the subsequent operation.
Third, the projection 42 is placed into the steel cap bowl 21 where the insulator is to be removed.
Fourth, the main tooth 521 is abutted against one side of the extracted locking pin 22. At this time, a large distance is provided between the grip 5 and the steel cap 2. Fig. 3 is a state diagram of the grip member when it is apart from the steel cap.
Fifthly, the insulating operating rod 6 drives the connecting screw rod 41 to rotate, so that the gripping piece 5 moves towards the direction approaching to the insulator until the fixed tooth ring 53 is tightly abutted against the steel cap 2. Fig. 4 is a state diagram of the grip against the steel cap.
Finally, the insulating operation rod 6 is pulled to separate the insulator to be disassembled from the strain insulator string.
It should be noted that, when specifically using, insulator dismouting device will cooperate the card punching sword to use with electric power tool such as hold in palm bottle frame jointly, installs and removes the piece by piece with the insulator on the strain insulator string.
Mounting the insulator is the reverse process of removing the insulator and will not be repeated here.
The embodiment of the application provides an insulator assembling and disassembling claw and an insulator assembling and disassembling device, wherein the insulator assembling and disassembling device comprises an insulator assembling and disassembling claw and an insulating operation rod 6, and the insulator assembling and disassembling claw is used for assembling or disassembling an insulator by controlling the insulating operation rod 6 to grip or release the insulator. The insulator assembling and disassembling claw comprises a connecting screw rod 41, a bulge 42, a rotary fixing ring 51, claw teeth 52 and a fixing toothed ring 53. The claw teeth 52 and the fixed tooth ring 53 are abutted against or separated from the steel cap 2 of the insulator through the matched movement of the connecting screw rod 41 and the rotary fixed ring 51, so that the insulator is gripped and released. Specifically, when the claw teeth 52 and the fixed tooth ring 53 are in contact with the steel cap 2, the claw teeth 52 and the fixed tooth ring 53 apply a pressing force to the steel cap 2 so as to tightly grasp the steel cap 2; when the claw teeth 52 and the fixed tooth ring 53 are away from the steel cap 2, the claw teeth 52 and the fixed tooth ring 53 no longer apply a pressing force to the steel cap 2, thereby releasing the steel cap 2.
The insulator assembling and disassembling claw and the insulator assembling and disassembling device are used for ground potential operation, namely, operators are at the ground potential, and the insulator assembling and disassembling work is completed through the insulating operation rod 6. Compared with the insulator assembly and disassembly in equipotential operation or power failure operation, the insulator assembly and disassembly claw and the assembly and disassembly device thereof provided by the application are used for ground potential operation, so that the operation risk in equipotential operation is avoided, and the reliability of power supply of a power transmission line and the use efficiency of power equipment are improved.
The above embodiments of the present application do not limit the scope of the present application.
Claims (5)
1. The insulator assembling and disassembling claw is characterized by comprising a connecting piece (4) and a grabbing piece (5), wherein the connecting piece (4) comprises a connecting screw rod (41), a bulge (42) is fixedly arranged at one end of the connecting screw rod (41), the bulge (42) is used for being clamped with a steel cap bowl head (21) of an insulator, and the size of the bulge (42) is matched with the size of the steel cap bowl head (21);
the gripping piece (5) comprises a rotary fixing ring (51), and the rotary fixing ring (51) is in threaded connection with the connecting screw rod (41);
the gripping member (5) further comprises at least three claw teeth (52), each claw tooth (52) being fixedly connected with the rotary fixing ring (51); the plurality of claw teeth (52) at least comprises a main tooth (521), the main tooth (521) is used for abutting against a locking pin (22) of an insulator, and the length of the main tooth is as follows: after the insulator assembling and disassembling claw is connected with the insulator, the connecting screw rod or the rotating fixing ring is rotated to enable the claw teeth and the insulator to move relatively, and when the relative distance between the claw teeth and the insulator reaches the maximum, the main teeth still can collide with the locking pins;
the gripping member (5) further comprises a stationary toothed ring (53), the stationary toothed ring (53) being used for fixing the claw teeth (52) on the rotating stationary ring (51);
the shape of the gripping piece (5) is matched with the shape of the steel cap (2) of the insulator, and the gripping piece comprises,
the external supporting included angle of each claw tooth (52) is matched with the shape of the steel cap (2) of the insulator, and the external supporting included angle of each claw tooth (52) is an included angle between the claw tooth (52) and the axis of the connecting screw rod (41);
the inner diameter of the fixed tooth ring (53) is matched with the outer diameter of the steel cap (2) of the insulator.
2. The insulator removal claw according to claim 1, characterized in that the grip member (5) comprises three claw teeth (52), one main tooth (521) and two sub-teeth (522) being included in the three claw teeth (52).
3. An insulator removal claw according to claim 1, characterised in that the external bracing angle of each claw tooth (52) is 25 °.
4. An insulator assembling and disassembling device, characterized by comprising the insulator assembling and disassembling claw and an insulating operation rod (6) according to any one of claims 1-3, wherein the insulator assembling and disassembling claw is detachably connected with the insulating operation rod (6).
5. Insulator-mounting-dismounting device according to claim 4, characterized in that the insulator-mounting-dismounting claw is detachably connected with the insulator handling rod (6), in particular comprising that the insulator-mounting-dismounting claw is screwed with the insulator handling rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710492002.0A CN107425469B (en) | 2017-06-26 | 2017-06-26 | Insulator assembling and disassembling claw and assembling and disassembling device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710492002.0A CN107425469B (en) | 2017-06-26 | 2017-06-26 | Insulator assembling and disassembling claw and assembling and disassembling device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107425469A CN107425469A (en) | 2017-12-01 |
| CN107425469B true CN107425469B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710492002.0A Active CN107425469B (en) | 2017-06-26 | 2017-06-26 | Insulator assembling and disassembling claw and assembling and disassembling device thereof |
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| CN (1) | CN107425469B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012244644A (en) * | 2011-05-16 | 2012-12-10 | Chugoku Electric Power Co Inc:The | Insulator replacement method for insulator chain |
| CN204947453U (en) * | 2015-06-29 | 2016-01-06 | 国家电网公司 | Insulator string pushes end |
| CN105529652A (en) * | 2016-02-29 | 2016-04-27 | 国网山西省电力公司临汾供电公司 | Working head of electric power operating |
| CN206820361U (en) * | 2017-06-26 | 2017-12-29 | 云南电网有限责任公司德宏供电局 | A kind of insulator assembly and disassembly pawl and its assembling and disassembling device |
-
2017
- 2017-06-26 CN CN201710492002.0A patent/CN107425469B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012244644A (en) * | 2011-05-16 | 2012-12-10 | Chugoku Electric Power Co Inc:The | Insulator replacement method for insulator chain |
| CN204947453U (en) * | 2015-06-29 | 2016-01-06 | 国家电网公司 | Insulator string pushes end |
| CN105529652A (en) * | 2016-02-29 | 2016-04-27 | 国网山西省电力公司临汾供电公司 | Working head of electric power operating |
| CN206820361U (en) * | 2017-06-26 | 2017-12-29 | 云南电网有限责任公司德宏供电局 | A kind of insulator assembly and disassembly pawl and its assembling and disassembling device |
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| Publication number | Publication date |
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| CN107425469A (en) | 2017-12-01 |
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