CN115173299A - On-line system for replacing insulator of power transmission line - Google Patents

Abstract

The invention relates to the technical field of power equipment, and discloses an on-line system for replacing insulators of a power transmission line, which comprises a front positioning hoop and a rear positioning hoop which are arranged at different insulators of the same suspension insulator string, wherein a pull-back piece for adjusting the distance between the front positioning hoop and the rear positioning hoop is arranged between the front positioning hoop and the rear positioning hoop; a front claw capable of sliding along the radial direction is arranged in the front positioning hoop through a claw adjusting mechanism and is used for being matched with an iron cap to realize that the front positioning hoop is fixed at the position of the suspension insulator string; and a rear claw which can slide along the radial direction is arranged in the rear positioning hoop through a claw adjusting mechanism, and the rear claw is used for being matched with the iron cap to realize that the rear positioning hoop is fixed at the position of the suspension insulator string. Through the structure, the front positioning hoop and the rear positioning hoop are assembled on the suspension insulator string, and the distance between the front positioning hoop and the rear positioning hoop is adjusted through the pull-back piece, so that the tension between the insulators is relieved, and the insulators are convenient to replace.

Description

On-line system for replacing insulator of power transmission line

Technical Field

The invention relates to the technical field of power equipment, in particular to an on-line system for replacing an insulator of a power transmission line.

Background

The insulator is a common power device in a power transmission line, and structurally, the insulator mainly comprises a plurality of insulator elements which are combined together to insulate a lead from a tower and the ground. Insulators are classified into porcelain insulators, glass insulators, composite insulators and the like, and at present, in high-voltage transmission lines, insulator strings used are mostly assembled into strings by using glass insulators. As shown in fig. 1-2, the conventional glass insulator includes a tempered glass member 210, a steel cap 220 and steel legs 230 respectively disposed at two sides of the tempered glass member 210, wherein a clamping groove 222 for clamping the corresponding steel leg 230 is disposed at an end of the steel cap 220, so that the glass insulators are assembled into a string, and a steel cap flange 221 is disposed at a position on an outer wall of the steel cap 220 close to the tempered glass member 210 along a circumferential direction thereof.

In order to ensure reliable operation of the insulator string, not only regular inspection is required, but also regular maintenance of the insulator string is required, and the defective insulator needs to be replaced. Because the insulator chain is assembled on the high-altitude power transmission tower, the difficulty of replacing the insulator with a problem is huge, and a better device for replacing the insulator is lacked in the prior art.

Disclosure of Invention

Aiming at certain defect or defects in the prior art, the invention provides an on-line system for replacing insulators of a power transmission line.

In order to solve the above technical problems, the present invention is solved by the following technical solutions.

An on-line system for replacing insulators of a power transmission line comprises a front positioning hoop and a rear positioning hoop which are arranged at different insulators of the same insulator string, wherein a pull-back piece for adjusting the distance between the front positioning hoop and the rear positioning hoop is arranged between the front positioning hoop and the rear positioning hoop;

a front claw capable of sliding along the radial direction is arranged in the front positioning hoop through a claw adjusting mechanism and is used for being matched with the steel cap to realize that the front positioning hoop is fixed at the insulator chain;

and a rear claw which can slide along the radial direction is arranged in the rear positioning hoop through a claw adjusting mechanism, and the rear claw is used for being matched with the steel cap to realize that the rear positioning hoop is fixed at the insulator chain.

According to the invention, the front positioning hoop and the rear positioning hoop are assembled on the insulator string, and the clamping jaws are matched with the corresponding steel caps through the clamping jaw adjusting mechanism, so that the front positioning hoop and the rear positioning hoop are tightly held at the insulator, and meanwhile, the distance between the front positioning hoop and the rear positioning hoop is adjusted through the arrangement of the pull-back piece, so that the tension between the insulators is relieved, and the replacement of the insulators is facilitated.

As preferred, preceding location staple bolt and back location staple bolt all include two and are non-closed ring shape and the location staple bolt body that the jack catch installation body assembly that mutually supports formed, one of two jack catch installation bodies is the main installation body of calorie, another in two jack catch installation bodies is the vice jack catch installation body, and the one end of the main jack catch installation body corresponds one end through articulated vice and vice jack catch installation body and articulates, and the other end of the main jack catch installation body corresponds the other end through buckle spare and vice jack catch installation body and can dismantle the connection.

According to the invention, the positioning hoop body is opened and closed better through the arrangement of the hinge pair and the buckle piece, so that the positioning hoop body is convenient to assemble on the insulator string.

Preferably, the buckle piece is including locating the main jack catch installation body the main connecting portion of other end department, locating the vice jack catch installation body the vice connecting portion of other end department and be used for realizing the retaining member of locking between vice connecting portion and main connecting portion, main connecting portion have the constant head tank, and vice connecting portion have the locating plate that stretches into in the constant head tank, and the locating plate is used for forming the location between main connecting portion and the vice connecting portion in the axial of location staple bolt body with the corresponding lateral wall of constant head tank.

According to the invention, through the matching of the positioning plate and the positioning groove, when the other end of the main jaw mounting body is connected with the other end of the auxiliary jaw mounting body, the other end of the main jaw mounting body and the other end of the auxiliary jaw mounting body can be positioned along the axial direction of the positioning hoop body, and the shaking of the joint of the clamping piece is avoided, so that the clamping jaws mounted on the positioning hoop are positioned on the same plane, and the clamping jaws are convenient to be matched with corresponding steel caps.

Preferably, the main connecting portion comprises two first connecting lugs which are arranged oppositely, a positioning groove is formed between the two first connecting lugs, the auxiliary connecting portion is provided with a stepped groove for the corresponding first connecting lug to extend into, one side wall of the stepped groove is formed by the positioning plate and is mutually limited with the inner side wall corresponding to the first connecting lug, and the other side wall of the stepped groove is mutually limited with the end face corresponding to the first connecting lug.

Through the structure in the invention, the connecting part of the buckle piece can be positioned along the axial direction of the positioning hoop body, and meanwhile, the stress of the buckle piece when the buckle piece is connected with the main connecting part and the auxiliary connecting part is realized, so that the positioning hoop body is convenient to close and assemble on the insulator string.

As the preferred, the retaining member is including rotationally locating between two first connection ears and axial and location staple bolt body axial direction parallel's fitting pin axle, and the epaxial locking screw who is equipped with axial and fitting pin axle vertically of fitting pin that is equipped with of fitting pin, the last screw thread of locking screw is equipped with and is used for the ladder groove another lateral wall supports the nut of tight terminal surface department at corresponding first connection ear.

Preferably, the auxiliary connecting portion is provided with an open slot for the locking screw to be clamped in around the locking pin shaft in a rotating manner, the end portion, far away from the locking pin shaft, of the locking screw extends out of the open slot when the locking screw is clamped in the open slot, and the nut is in threaded connection with the end portion, extending out of the open slot, of the locking screw and abuts against the side face of the auxiliary connecting portion.

Through the structure in the embodiment, the locking screw rod is clamped into the open slot along with the rotation of the locking pin shaft, the nut is screwed down to be abutted against the side face of the auxiliary connecting part, so that the connection between the main connecting part and the auxiliary connecting part is realized, the locking of the positioning hoop is preferably realized, the abutting against the side face of the auxiliary connecting part is relieved by screwing the nut, the locking screw rod is stirred to rotate out of the open slot to relieve the connection between the main connecting part and the auxiliary connecting part, the opening of the positioning hoop is preferably realized, and the positioning hoop is convenient to be matched with a steel cap.

Preferably, the end face of the positioning plate is provided with a locking pin shaft outer side wall matched arc-shaped limiting groove, the locking pin shaft is preferably further limited, and the main connecting portion and the auxiliary connecting portion are positioned along the circumferential direction of the positioning hoop body.

Preferably, the hinge pair is provided with a hinge block, a hinge groove and a hinge shaft, and the hinge block and the hinge groove are in hinge fit through the hinge shaft; the hinge block is of a convex structure and is formed at one of the one end of the main jaw mounting body and the one end of the auxiliary jaw mounting body, and the hinge groove is of a groove structure and is formed at the other of the one end of the main jaw mounting body and the one end of the auxiliary jaw mounting body, so that the hinge connection between the main jaw mounting body and the auxiliary jaw mounting body is preferably realized.

Preferably, the jaw adjusting mechanism comprises a jaw assembling portion arranged at the jaw, a jaw assembling groove arranged at the jaw mounting body and an adjusting assembly, the jaw mounting body is in a non-closed circular ring shape, the jaw assembling groove is radially arranged along the jaw mounting body, and the jaw is radially and slidably arranged at the jaw assembling groove; the adjusting component is matched with one of the jaw assembling part and the jaw mounting body in a relatively fixed mode along the radial direction, and the adjusting component is matched with the other of the jaw assembling part and the jaw mounting body in an adjustable mode along the radial direction.

Through the arrangement of the jaw adjusting mechanism, when an operator actually operates, the jaw can be adjusted to move along the jaw assembling groove through the jaw adjusting mechanism, so that the position of the jaw can be adjusted, the positioning hoop can be matched with insulator strings with different diameters and models, and the applicability of insulator replacing equipment for the insulator strings is wider.

Preferably, the adjustment assembly comprises a screw member, a mounting member provided at one of said positions for forming a rotational fit with the screw member, and a threaded member provided at the other of said positions for forming a threaded fit with the screw member.

Through the matching arrangement of the screw rod piece and the thread piece, the movement of the clamping jaw is preferably adjusted.

Preferably, the mounting member includes a first mounting groove formed at the one place, and the screw member includes a second mounting groove formed at the other place; the side walls of the first mounting groove and the second mounting groove jointly form a circumferential mounting surface used for being matched with the side wall of the threaded piece, and the mounting of the screw rod at the clamping jaw mounting portion and the clamping jaw mounting body is preferably achieved.

Preferably, the positioning piece is arranged at one position and used for realizing relative fixed matching between the screw rod piece and the one position in the radial direction;

the positioning piece comprises a convex structure which is configured to protrude out of the first installation groove towards the inner periphery, the convex structure is fixedly matched with the first installation groove in the radial direction, a concave structure which shrinks towards the inner periphery is formed at the corresponding side wall of the screw rod piece, and the concave structure and the convex structure form interference in the radial direction of the screw rod piece.

Through the matching arrangement of the groove structure and the bulge structure, the positioning piece can better realize the radial position limitation of the screw rod.

Preferably, one of the first mounting groove and the second mounting groove is a claw mounting body, the positioning piece comprises a positioning block detachably arranged at the claw mounting body, and a positioning block assembling hole matched with the positioning block is formed between the corresponding end face of the claw mounting body and the side wall of the first mounting groove; the protruding structure is formed at the inner end of the positioning block, the outer end of the positioning block forms a positioning block mounting structure, and the protruding structure and the first mounting groove are preferably fixedly matched in the radial direction.

Preferably, the positioning block mounting structure comprises a positioning block mounting plate protruding out of the positioning block towards the outer periphery, a mounting plate mounting groove matched with the positioning block mounting plate is formed at the corresponding end face, the positioning block mounting plate is detachably arranged at the mounting plate mounting groove through a connecting piece, and the positioning piece is preferably mounted and dismounted at the claw mounting body.

Preferably, the groove structure comprises 2 annular clamping grooves arranged at intervals, an annular part is formed between the 2 annular clamping grooves, and a matched positioning clamping groove is formed at the position, corresponding to the annular part, of the protruding structure.

Preferably, the protruding structures correspond to any one of the annular clamping grooves to form a positioning clamping ring matched with the protruding structures.

With the configuration of the present invention, rotatable mounting of the screw member is preferably achieved.

Preferably, the two ends of the pull-back piece are respectively provided with a front connecting part and a rear connecting part which are matched with the front positioning hoop and the rear positioning hoop, the front positioning hoop corresponds to the front connecting part to form a front connecting body, the rear positioning hoop corresponds to the rear connecting part to form a rear connecting body, and the front connecting body and the rear connecting body are constructed to prevent the pull-back piece from interfering with the periphery of the toughened glass piece.

According to the invention, the front connector and the rear connector are respectively connected with the front connecting part and the rear connecting part corresponding to the pull-back piece through the arrangement of the front connector and the rear connector, so that the pull-back piece is preferably connected to the corresponding positioning anchor ear, and meanwhile, the damage to the toughened glass piece caused by the extrusion between the pull-back piece and the toughened glass piece of the insulator string is avoided.

Preferably, at least 2 pullback pieces are uniformly distributed along the circumferential direction of the insulator string, so that the stress between the front positioning hoop and the rear positioning hoop is uniform, and the distance between the front positioning hoop and the rear positioning hoop can be conveniently adjusted through the pullback pieces.

Preferably, the front connecting body is hinged with the front connecting part through a front hinge pair.

Preferably, the rear connecting body is hinged with the rear connecting part through a rear hinge pair.

Preferably, the pull-back piece is a mechanical screw or a hydraulic screw, so that an operator can conveniently operate on the line to adjust the distance between the front positioning hoop and the rear positioning hoop.

Preferably, the front jaw has a front jaw body portion and a front jaw mouth portion, and the rear jaw has a rear jaw body portion and a rear jaw mouth portion;

the front claw main body part and the rear claw main body part are used for realizing the interval assembly of the front claw and the rear claw, the front claw clamping opening part is used for matching with the corresponding steel cap from the far toughened glass part side of the steel cap flange, and the rear claw clamping opening part is used for matching with the corresponding steel cap from the near toughened glass part side of the steel cap flange.

According to the invention, the front claw clamping opening part and the rear claw clamping opening part are matched with the corresponding positions of the steel cap, so that the front positioning hoop and the rear positioning hoop are tightly held on the insulator string, and the problem that the positioning hoop is not conveniently held on the insulator string due to tight connection between insulators is preferably solved.

Preferably, the front-claw main body part is provided with one end of the front-claw main body matched with the corresponding steel cap and the other end of the front-claw main body far away from the corresponding steel cap, the front-claw main body part is further provided with an upper plane of the front-claw main body for assembling and a lower inclined plane of the front-claw main body opposite to the upper plane, and the upper plane and the lower inclined plane are configured to enable the thickness of the front-claw main body part to gradually increase from the other end of the front-claw main body to one end of the front-claw main body.

Through the structure of the invention, the strength of the front claw is better ensured, and the front positioning hoop is tightly held through the matching of the clamping opening part of the front claw and the steel cap.

Preferably, a front jaw portion is formed at one end of the front jaw body portion, and the front jaw portion has a first mating surface curved in a circular arc for mating with a side wall of a corresponding steel cap, preferably to facilitate mating between the front jaw and the side wall of the corresponding steel cap.

Preferably, the width of the first mating surface is the same as the thickness of the front jaw body portion at one end of the front jaw body, preferably ensuring the strength of the front jaw bayonet portion.

Preferably, the rear-jaw main body part is provided with one end of the rear-jaw main body matched with the corresponding steel cap and the other end of the rear-jaw main body far away from the corresponding steel cap, the rear-jaw main body part is further provided with an upper plane of the rear-jaw main body for assembling and a lower inclined plane of the rear-jaw main body opposite to the upper plane, and the thickness of the rear-jaw main body part is gradually increased from the other end of the rear-jaw main body to one end of the rear-jaw main body between the upper plane and the lower inclined plane.

Through the structure of the invention, the strength of the rear claw is better ensured, and the rear positioning hoop is ensured to be tightly held through the matching of the clamping opening part of the rear claw and the steel cap.

Preferably, a rear jaw portion is formed at one end of the rear jaw body, and the rear jaw portion has a second fitting surface curved in an arc for fitting with a side wall of the corresponding steel cap between the steel cap flange and the tempered glass member.

Preferably, a third matching surface is formed on the side surface, close to the upper plane of the rear claw main body, of the clamping opening part of the rear claw, and the third matching surface is used for matching with the outer side wall of the corresponding steel cap flange; the rear jaw portion further has a rear jaw portion lower plane opposite to the third mating surface, and the rear jaw portion lower plane and the third mating surface are configured such that the thickness of the rear jaw portion becomes gradually smaller in a direction away from the rear jaw body portion.

Through the structure of the invention, the rear claw can be clamped between the steel cap flange and the toughened glass piece, the rear positioning hoop can be tightly held at the steel cap through the rear claw, and meanwhile, the third matching surface is matched with the steel cap flange, so that the stress of the rear claw is ensured, and the adjustment and the maintenance of the distance between the front positioning hoop and the rear positioning hoop by the pull-back mechanism are facilitated.

Drawings

FIG. 1 is a schematic view of an insulator string in an embodiment;

FIG. 2 is a schematic sectional view of a glass insulator according to an embodiment;

fig. 3 is a schematic structural diagram of a replacing device for an insulator of a power transmission line in an embodiment;

fig. 4 is a schematic cross-sectional view of the front positioning hoop at the insulator in the embodiment;

FIG. 5 is a schematic cross-sectional view of the rear positioning hoop at the insulator in the embodiment

FIG. 6 is a schematic view of a positioning hoop in an embodiment;

FIG. 7 is a schematic structural diagram of a main card main mounting body in the embodiment;

FIG. 8 is a schematic structural view of a sub-pawl mounting body in the embodiment;

FIG. 9 is a schematic view showing the structure of the locker in the embodiment;

FIG. 10 is a schematic view of a jaw adjustment mechanism in an embodiment;

FIG. 11 is a schematic structural diagram of a positioning member in an embodiment;

FIG. 12 is a schematic structural view of a screw member in an embodiment;

FIG. 13 is a schematic structural view of a front jaw in the embodiment;

FIG. 14 is a schematic structural view of a rear jaw in the embodiment;

fig. 15 is a schematic structural view of a pull-back member in the embodiment.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

Example 1

In order to replace any insulator in an insulator string that has been put into use, the present embodiment provides a replacement device for a power transmission line insulator string, which includes an apparatus main body.

As shown in fig. 3, the main body of the apparatus in this embodiment has a pull-back mechanism and a positioning hoop, and the positioning hoop includes a front positioning hoop 110 and a rear positioning hoop 120 respectively disposed at two ends of the pull-back mechanism. The front positioning hoop 110 is used for being matched with an insulator located at the front end of the insulator to be replaced, the rear positioning hoop 120 is used for being matched with an insulator located at the rear end of the insulator to be replaced, and the pull-back mechanism is used for adjusting and maintaining the distance between the front positioning hoop 110 and the rear positioning hoop 120.

Based on the structure, when the insulator string replacement device is used specifically, the front positioning hoop 110 and the rear positioning hoop 120 can be used for tightly holding the front end insulator and the rear end insulator, then the pulling force at the position where the insulator is to be replaced can be relieved through the pull-back mechanism, at the moment, the replacement of the insulator to be replaced can be conveniently realized, and therefore the online replacement of any insulator in the insulator string which is put into use is better realized.

Considering that all insulators in the insulator string are connected tightly and no too many positions for holding are available, the positioning hoop in the embodiment can be matched with the corresponding insulator better by structures such as clamping claws; the claw can be realized in the form of a claw pair described below, in which the claw pair includes a front claw 140a and a rear claw 140b for respectively engaging with the front positioning hoop 110 and the rear positioning hoop 120, so that the engagement with the corresponding insulator can be preferably realized. It should be understood that the structure of the pawl 140 or pawl pair, etc., given below, merely provides a preferred solution, which is intended to be illustrative of the solution of the invention and not limiting; in fact, the pawl 140 or pawl pair can be implemented using other configurations known in the art.

In addition, considering that the positioning hoop needs to be compatible with insulators with diameter sizes varying within a certain range, when the clamping jaws 140 are arranged at the positioning hoop, the clamping jaw adjusting mechanisms described below can be arranged at the positioning hoop to realize the assembly of the clamping jaws 140, so that the clamping jaws can be matched with insulators of various models better, and the holding force can be adjusted better. It should be understood that the jaw adjustment mechanism given below provides only one preferred solution, which is intended to be illustrative of the solution of the invention only and not limiting; in fact, the jaw adjustment mechanism can also be implemented using other configurations that are currently available.

In order to achieve the purpose of adjusting the distance between the front positioning hoop 110 and the rear positioning hoop 120, the pull-back mechanism in this embodiment can be configured as follows. It should be understood that the pullback mechanism given below provides only one preferred solution, which is intended to be illustrative of the solution of the invention and not limiting; in fact, the pullback mechanism can also be implemented using other configurations that are currently available.

In addition, in order to realize better matching between the positioning hoop and the corresponding insulator, the positioning hoop in the embodiment can be provided with a locking mechanism described below, so that the assembly between the positioning hoop and the corresponding insulator can be better realized.

Example 2

As shown in fig. 4 to 5 and 13 to 14, the jaw pair in this embodiment includes a front jaw 140a and a rear jaw 140b arranged at an interval, and the front jaw 140a and the rear jaw 140b are used to cooperatively cooperate with different insulators on the same insulator string 100;

the front jaw 140a has a front jaw body 1010 and a front jaw mouth 1020, and the rear jaw 140b has a rear jaw body 1110 and a rear jaw mouth 1120;

the front jaw main body part 1010 and the rear jaw main body part 1110 are used for realizing the spaced assembly of the front jaw 140a and the rear jaw 140b, the front jaw bayonet part 1020 is used for matching the distal tempered glass piece 210 side of the steel cap flange 221 with the corresponding steel cap 220, and the rear jaw bayonet part 1120 is used for matching the proximal tempered glass piece 210 side of the steel cap flange 221 with the corresponding steel cap 220.

In the embodiment, a front claw 140a and a rear claw 140b form a claw pair, and in the actual use process, the holding effect of the positioning hoop on the insulator string can be ensured by arranging a plurality of groups of claw pairs; in this embodiment, the front claw bayonet part 1020 and the rear claw bayonet part 1120 are matched with the corresponding positions of the steel cap 220, so that the front positioning hoop 110 and the rear positioning hoop 120 are tightly held on the insulator string, and the problem that the positioning hoop is tightly held on the insulator string due to tight connection between insulators is preferably solved.

In this embodiment, the front-jaw main body 1010 has one end of the front-jaw main body for matching with the corresponding steel cap 220 and the other end of the front-jaw main body far away from the corresponding steel cap 220, the front-jaw main body 1010 further has an upper plane 1011 of the front-jaw main body for assembling and a lower inclined plane 1012 of the front-jaw main body opposite to the upper plane, and the upper plane and the lower inclined plane are configured such that the thickness of the front-jaw main body 1010 gradually increases from the other end of the front-jaw main body to the one end of the front-jaw main body.

Through the structure in the embodiment, the thickness of the front claw body 1010 is gradually increased from the other end far away from the steel cap 220 to one end, so that the strength of the front claw body 1010 is increased as the front claw body is closer to the steel cap 220, thereby preferably ensuring the strength of the front claw 140a, and ensuring that the front positioning hoop 110 is clasped through the cooperation of the front claw bayonet part 1020 and the steel cap 220.

In this embodiment, a front jaw portion 1020 is formed at one end of the front jaw main body portion 1010, and the front jaw portion 1020 has a first mating surface 1021 curved in an arc for mating with a side wall of the corresponding steel cap 220.

Through the structure in this embodiment, the first fitting surface 1021 is fitted to the side wall of the steel cap 220 on the side of the distal tempered glass piece 210 of the steel cap flange 221, so as to preferably hold the front positioning hoop at the steel cap 220 through the front claw 140a, and at the same time, through the fit between the front claw bayonet 1020 and the steel cap flange 221, the front claw 140a is positioned, so that the front claw 140a is stressed, and the adjustment and maintenance of the distance between the front positioning hoop 110 and the rear positioning hoop 120 by the pull-back mechanism are facilitated.

In this embodiment, the width of the first engagement surface 1021 is the same as the thickness of the front jaw main body 1010 at one end of the front jaw main body, so as to preferably ensure the strength of the front jaw clamping portion 1020, and facilitate the engagement with the steel cap 220.

In this embodiment, the rear-jaw body 1110 has one end of the rear-jaw body for engaging with the corresponding steel cap 220 and the other end of the rear-jaw body away from the corresponding steel cap 220, the rear-jaw body 1110 further has an upper plane 1111 of the rear-jaw body for assembling and a lower inclined plane 1112 of the rear-jaw body opposite to the upper plane, and the upper plane and the lower inclined plane are configured such that the thickness of the rear-jaw body 1110 gradually increases from the other end of the rear-jaw body to the one end of the rear-jaw body.

By the structure of the embodiment, the thickness of the rear jaw body 1110 gradually increases from the other end far away from the steel cap 220 to one end, so that the strength of the rear jaw body 1110 increases as the rear jaw body 1110 approaches the steel cap 220, thereby preferably ensuring the strength of the rear jaw 140b, and ensuring that the rear positioning hoop 110 is clasped by the engagement of the rear jaw bayonet portion 1120 and the steel cap 220.

In this embodiment, the rear jaw portion 1120 is formed at one end of the rear jaw body, and the rear jaw portion 1120 has a second fitting surface 1121 which is curved in an arc shape and is used for fitting with a corresponding side wall of the steel cap 220 between the steel cap flange 221 and the tempered glass member 210.

With the structure of the present embodiment, the second engagement surface 1121 preferably engages with the side wall of the steel cap 220 between the steel cap flange 221 and the tempered glass 210, so as to ensure the engagement between the rear claw clamping opening portion 1120 and the steel cap 220.

In this embodiment, a third mating surface 1122 is formed on a side surface of the rear jaw bayonet portion 1120 close to the upper plane 1111 of the rear jaw main body, and the third mating surface 1122 is used for mating with an outer sidewall of the corresponding steel cap flange 221; the rear jaw portion 1120 further has a rear jaw portion lower plane opposite to the third mating surface 1122, and a thickness of the rear jaw portion 1120 gradually decreases in a direction away from the rear jaw body portion 1110 between the rear jaw portion lower plane and the third mating surface 1122.

Through the structure in this embodiment, the third mating surface 1122 can be attached to the sidewall of the steel cap flange 221, and the second mating surface 1121 is attached to the sidewall of the steel cap 220 between the steel cap flange 221 and the tempered glass piece 210, preferably, the rear claw clamping opening portion 1120 can be clamped between the steel cap flange 221 and the tempered glass piece 210, so as to preferably achieve the clasping of the rear positioning hoop at the steel cap 220 by the rear claw 140b, and meanwhile, the third mating surface 1122 is engaged with the steel cap flange 221, so as to ensure the stress of the rear claw 140b, and facilitate the adjustment and the maintenance of the distance between the front positioning hoop 110 and the rear positioning hoop 120 by the pull-back mechanism.

In this embodiment, the front-claw body 1010 has a front-claw mounting portion 710a formed on the upper plane 1011 of the front-claw body, and the front-claw mounting portion 710a is used for realizing the movable mounting of the front claw 140 a.

With the configuration in the present embodiment, the fitting of the front claws 140a on the front positioning hoop 110 is preferably achieved.

In this embodiment, the rear-jaw body 1110 has a rear-jaw mounting portion 710b formed at the upper plane 1111 of the rear-jaw body, and the rear-jaw mounting portion 710b is used for movably mounting the rear jaw 140 b.

With the configuration in this embodiment, the fitting of the rear claws 140b at the rear positioning hoop 120 is preferably achieved.

Example 3

As shown in fig. 6 to 8 and 10 to 12, the jaw adjusting mechanism in this embodiment includes a jaw assembling portion 710 disposed at the jaw 140, a jaw assembling groove 431 disposed at the positioning hoop, and an adjusting component, where the positioning hoop includes a positioning hoop body 300 formed by assembling two non-closed circular and mutually matched jaw installing bodies 310, the jaw assembling groove 431 is radially disposed along the jaw installing body 310, and the jaw 140 is radially and slidably disposed at the jaw assembling groove 431; the adjustment assembly is engaged with one of the jaw mounting portion 710 and the jaw mounting body 310 in a relatively fixed radial direction and the adjustment assembly is engaged with the other of the jaw mounting portion 710 and the jaw mounting body 310 in an adjustable radial direction.

In this embodiment, the jaws 140 are slidably assembled in the jaw assembling grooves 431 through the jaw assembling portions 710, and the jaw adjusting mechanisms are arranged, so that an operator can adjust the jaws 140 to move along the jaw assembling grooves 431 through the jaw adjusting mechanisms during actual operation, the positions of the jaws 140 can be adjusted, the positioning hoops can be adapted to insulator strings of the same tonnage and different steel cap sizes, and the applicability of the replacing device for the insulators of the power transmission line is wider.

In this embodiment, the adjustment assembly comprises a screw member 720, a mounting member disposed at one of the positions for forming a rotational fit with the screw member 720, and a screw member disposed at the other position for forming a threaded fit with the screw member 720.

In this embodiment, the screw member 720 is rotatably mounted at one of the jaw mounting part 710 and the jaw mounting body 310 by a mounting member such that the screw member 720 is relatively fixedly engaged with the one in a radial direction; the rotation of the screw member 720 through the screw member drives the screw member to move the other one of the jaw mounting portion 710 and the jaw mounting body 310, so that the screw member 720 is adjustably engaged with the other one thereof in the radial direction.

In this embodiment, the mounting member includes a first mounting groove 432 formed at one of the places, and the screw member includes a second mounting groove 711 formed at the other place; the sidewalls of the first and second mounting grooves 432 and 711 together form a circumferential fitting surface for fitting with the sidewall of the screw member 720.

With the configuration in the present embodiment, the mounting of the screw member 720 at the jaw mounting part 710 and the jaw mounting body 310 is preferably accomplished.

In this embodiment, the positioning member 730 is set at one of the positions, and the positioning member 730 is used for realizing the relative fixed fit between the screw member 720 and the one of the positions in the radial direction, and preferably realizing the dismounting and mounting of the screw member 720 at the one of the positions.

In this embodiment, the positioning member 730 is set at one of the positions, and the positioning member 730 is used for realizing the relative fixed fit between the screw member 720 and the one of the positions in the radial direction;

the positioning member 730 includes a protrusion structure configured to protrude from the first mounting groove 432 toward the inner circumference, the protrusion structure is relatively fixedly fitted with the first mounting groove 432 in the radial direction, a groove structure contracted toward the inner circumference is formed at the corresponding sidewall of the screw member 720, and the groove structure and the protrusion structure form an interference in the radial direction of the screw member 720.

Through the structure in the present embodiment, the positioning member 730 can preferably limit the position of the screw member 720 in the radial direction, and preferably realize the relative fixation between the screw member 720 and the one in the radial direction, by the mutually matching arrangement of the protrusion structure and the groove structure.

In this embodiment, the one is the jaw mounting body 310, the positioning member 730 includes a positioning block 810 detachably disposed at the jaw mounting body 310, and a positioning block mounting hole 433 for matching with the positioning block 810 is formed between a corresponding end surface of the jaw mounting body 310 and a side wall of the first mounting groove 432; the protrusion structure is formed at the inner end of the positioning block 810, and the outer end of the positioning block 810 forms a positioning block mounting structure.

Through the arrangement of the positioning block assembly hole 433 and the positioning block 810 in the present embodiment, the positioning block 810 is assembled in the positioning block assembly hole 433, so that the installation of the positioning 730 pieces in the claw installation body 310 is realized, and the protruding structure and the first installation groove 432 are preferably in relative fixed fit in the radial direction.

In this embodiment, the positioning block mounting structure includes a positioning block mounting plate 811 protruding from the positioning block 810 toward the outer periphery, a mounting plate mounting groove 434 for being matched with the positioning block mounting plate 811 is formed at the corresponding end surface, the positioning block mounting plate 811 is detachably disposed at the mounting plate mounting groove 434 through a connecting member, and the positioning member 730 is preferably mounted and dismounted at the claw mounting body 310.

In this embodiment, the groove structure includes 2 annular locking grooves 911 arranged at intervals, an annular portion 912 is formed between the 2 annular locking grooves 911, and a matching positioning locking groove 821 is formed at a position of the protrusion structure corresponding to the annular portion 912;

the protruding structure corresponding to any one of the ring-shaped slots 911 forms a positioning clamp ring 831.

With the configuration in the present embodiment, it is preferable to realize that the screw member 720 is rotatably mounted at the one point.

In this embodiment, the jaw mounting portion 710 and the jaw mounting body 310 are provided with a limiting structure, and the limiting structure is used for limiting the radial stroke of the jaw 140.

In this embodiment, the limiting structure includes a limiting groove 712 disposed at the claw mounting portion 710 along the radial direction of the claw mounting body 310 and a limiting pin disposed at the claw mounting body 310, the claw mounting body 310 is provided with a limiting pin mounting hole 435 corresponding to the limiting pin, and the limiting pin forms interference with the limiting groove 712 through the limiting pin mounting hole 435.

Through the structure in the embodiment, the limit pin is inserted into the limit pin assembly hole 435 and the limit groove 712, so that the limit pin can limit the moving distance of the clamping jaw 140 along the clamping jaw assembly groove 431, and the insulator string with the diameter size varying in a certain range can be positioned and fitted better.

In this embodiment, the outer end of the screw member 720 forms an inner hexagonal groove 921.

Through the structure in the embodiment, it is preferable that the operator drives the screw member 720 to rotate by the allen wrench during the actual operation, so as to adjust the movement of the clamping jaw 140.

Example 4

As shown in fig. 6 and 15, the pull-back mechanism in this embodiment includes a pull-back member 130 for cooperating with the front positioning hoop 110 and the rear positioning hoop 120, the front positioning hoop 110 and the rear positioning hoop 120 are for cooperating with different insulators on the same insulator string 100, and the pull-back member 130 is used for adjusting the distance between the front positioning hoop 110 and the rear positioning hoop 120;

the two ends of the pull-back piece 130 are respectively provided with a front connecting part 131 and a rear connecting part 132 which are used for being matched with the front positioning hoop 110 and the rear positioning hoop 120, the front connecting part 111 is formed at the position of the front positioning hoop 110 corresponding to the front connecting part 131, the rear connecting part 121 is formed at the position of the rear positioning hoop 120 corresponding to the rear connecting part 132, and the front connecting part 111 and the rear connecting part 121 are constructed for preventing the pull-back piece 130 from interfering with the periphery of the toughened glass piece 210.

In this embodiment, the front connector 111 and the rear connector 121 are arranged to connect the front connector 111 and the rear connector 121 with the front connecting portion 131 and the rear connecting portion 132 corresponding to the pull-back member 130, so that the pull-back member 130 is preferably connected to the corresponding positioning anchor ear, and meanwhile, the damage to the tempered glass member 210 due to the extrusion between the pull-back member 130 and the insulator string tempered glass member 210 is avoided.

In this embodiment, the number of the pull-back members 130 is at least 2 along the circumference of the insulator string 100, so that the stress between the front positioning hoop 110 and the rear positioning hoop 120 is uniform, and the distance between the front positioning hoop 110 and the rear positioning hoop 120 can be conveniently adjusted by the pull-back members 130.

In this embodiment, the front connecting body 111 is hinged to the front connecting portion 131 through a front hinge pair.

In this embodiment, the front hinge pair has a front hinge block, a front hinge slot 1211 and a front hinge shaft, and the front hinge block and the front hinge slot 1211 form a hinge fit through the front hinge shaft; the front hinge block has a convex structure and is formed at one of the front connection body 111 and the front connection part 131, and the front hinge groove 1211 has a groove structure and is formed at the other of the front connection body 111 and the front connection part 131.

With the configuration in this embodiment, the hinge connection between the front connection body 111 and the front connection portion 131 is preferably achieved.

In this embodiment, the rear connecting body 121 and the rear connecting portion 132 are hinged to each other by a rear hinge pair.

In this embodiment, the rear hinge pair has a rear hinge block, a rear hinge groove 1212 and a rear hinge shaft, and the rear hinge block and the rear hinge groove 1212 form a hinge fit through the rear hinge shaft; the rear hinge block has a protrusion structure and is formed at one of the rear connection body 121 and the rear connection part 132, and the rear hinge groove 1212 has a groove structure and is formed at the other of the rear connection body 121 and the rear connection part 132.

With the configuration in the present embodiment, the hinge connection between the rear connection body 121 and the rear connection part 132 is preferably achieved.

In this embodiment, the pulling member 130 is a mechanical lead screw or a hydraulic lead screw.

By adopting the mechanical lead screw or the hydraulic lead screw in the embodiment, an operator can conveniently perform online operation, and the distance between the front positioning hoop 110 and the rear positioning hoop 120 can be adjusted.

In this embodiment, the front connectors 111 are integrally disposed at the circumferential side of the front positioning hoop 110 and extend outward in the radial direction of the front positioning hoop 110, preferably forming the front connectors.

In this embodiment, the rear connectors 121 are integrally formed at the circumferential side of the rear positioning hoop 120 and extend outward in the radial direction of the rear positioning hoop 120, preferably forming the rear connectors.

Example 5

As shown in fig. 6 to 9, the locking mechanism in this embodiment includes two jaw mounting bodies 310 for mutual cooperation, the two jaw mounting bodies 310 are in a non-closed circular shape and are assembled to form the positioning hoop body 300, one of the two jaw mounting bodies 310 is a main jaw mounting body 310a, the other of the two jaw mounting bodies 310 is an auxiliary jaw mounting body 310b, and the main jaw mounting body 310a and the auxiliary jaw mounting body 310b are assembled to form the positioning hoop body 300; one end of the main jaw mounting body 310a is hinged to the corresponding end of the sub jaw mounting body 310b through a hinge pair 330, and the other end of the main jaw mounting body 310a is detachably connected to the corresponding other end of the sub jaw mounting body 310b through a fastening member 340.

In this embodiment, through the arrangement of the hinge pair 330, the rotation connection between one end of the main jaw mounting body 310a and one end of the auxiliary jaw mounting body 310b is preferably realized, and through the arrangement of the fastener 340, the detachable connection between the other end of the main jaw mounting body 310a and the other end of the auxiliary jaw mounting body 310b is preferably realized, so that the front positioning hoop 110 and the rear positioning hoop 120 can be opened and closed through the fastener 340, and the assembly between the front positioning hoop 110 and the rear positioning hoop 120 and the corresponding insulator is facilitated.

In this embodiment, the locking member 340 includes a main connecting portion disposed at the other end of the main jaw mounting body 310a, an auxiliary connecting portion disposed at the other end of the auxiliary jaw mounting body 310b, and a locking member for locking the auxiliary connecting portion and the main connecting portion, the main connecting portion has a positioning slot 411, the auxiliary connecting portion has a positioning plate 511 extending into the positioning slot 411, and the positioning plate 511 and the corresponding side wall of the positioning slot 411 are used for positioning the main connecting portion and the auxiliary connecting portion in the axial direction of the positioning hoop body 300.

Through the structure in this embodiment, when the positioning plate 511 extends into the positioning slot 411, the two side surfaces of the positioning plate 511 and the corresponding side walls of the positioning slot 411 are attached to each other, and when the other end of the main pawl mounting body 310a is connected with the other end of the auxiliary pawl mounting body 310b, the main pawl mounting body and the auxiliary pawl mounting body are positioned along the axial direction of the positioning hoop body 300, so as to preferably avoid the shaking of the joint of the buckling pieces 340, and further, the clamping claws 140 mounted on the positioning hoop are preferably positioned on the same plane, so as to be convenient for matching with the corresponding steel cap 220.

In this embodiment, the main connecting portion includes two first connecting lugs 410 disposed oppositely, a positioning slot 411 is formed between the two first connecting lugs 410, the auxiliary connecting portion has a stepped slot 512 for the corresponding first connecting lug 410 to extend into, a side wall of the stepped slot 512 is formed by a positioning plate 511 and is mutually limited with an inner side wall of the corresponding first connecting lug 410, and another side wall of the stepped slot 512 is mutually limited with an end surface of the corresponding first connecting lug 410.

Through the structure in this embodiment for first engaging lug 410 is located the ladder groove 512 that corresponds, can make to connect main jack catch installation body 310a through buckle spare 340 better the other end and vice jack catch installation body 310b during the other end, it can be being located along location staple bolt body 300 axial, simultaneously, it is spacing each other with the terminal surface that corresponds first engaging lug 410 through another lateral wall of ladder groove 512, atress when can realize buckle spare 340 connection main connecting portion and vice connecting portion better, the installation between main jack catch installation body 310a and vice jack catch installation body 310b of being convenient for.

In this embodiment, the locking member is disposed at the main connecting portion and is used for locking the auxiliary connecting portion at the main connecting portion.

In this embodiment, the locking member includes a locking pin shaft 610 rotatably disposed between the two first connecting lugs 410 and axially parallel to the positioning hoop body 300, a locking screw 611 axially perpendicular to the locking pin shaft 610 is disposed on the locking pin shaft 610, and a nut 612 for tightly abutting the stepped groove 512 against the end face of the corresponding first connecting lug 410 is disposed on the locking screw 611 in a threaded manner.

In this embodiment, the secondary connecting portion has an open slot 513 for the locking screw 611 to be inserted around the locking pin 610, the end of the locking screw 611 far from the locking pin 610 extends out of the open slot 513 when the locking screw 611 is inserted into the open slot 513, and the nut 612 is screwed to the end of the locking screw 611 extending out of the open slot 513 and abuts against the side surface of the secondary connecting portion.

In this embodiment, the secondary connecting portion has an open slot 513 for the locking screw 611 to be inserted around the locking pin 610, the end of the locking screw 611 far from the locking pin 610 extends out of the open slot 513 when the locking screw 611 is inserted into the open slot 513, and the nut 612 is screwed to the end of the locking screw 611 extending out of the open slot 513 and abuts against the side surface of the secondary connecting portion.

Through the structure in the embodiment, when the locking member is used, the locking screw 611 is shifted to be clamped into the open slot 513 along with the rotation of the locking pin 610, at the moment, the locking nut 612 is screwed to be tightly abutted to the side surface of the auxiliary connecting part to realize the connection between the main connecting part and the auxiliary connecting part, the locking of the positioning hoop is preferably realized, the abutting to the side surface of the auxiliary connecting part is relieved by screwing the nut 612, the locking screw 611 is shifted to be rotated out of the open slot 513 to relieve the connection between the main connecting part and the auxiliary connecting part, the opening of the positioning hoop is preferably realized, and the matching between the locking screw and the steel cap 220 is facilitated.

In this embodiment, the positioning plate 511 has an end surface provided with an arc-shaped limiting groove 514 for engaging with the outer side wall of the locking pin 610, so as to preferably position the main connecting portion and the auxiliary connecting portion along the circumferential direction of the positioning hoop body 300.

In this embodiment, the hinge pair 330 has a hinge block 520, a hinge slot 421 and a hinge shaft, and the hinge block 520 and the hinge slot 421 form a hinge fit through the hinge shaft; the hinge block 520 has a protrusion structure and is formed at one of the one end of the main jaw mounting body 310a and the one end of the sub jaw mounting body 310b, and the hinge groove 421 has a groove structure and is formed at the other of the one end of the main jaw mounting body 310a and the one end of the sub jaw mounting body 310 b.

With the configuration in this embodiment, it is preferable to realize the hinge connection between the one end of the main pawl mounting body 310a and the one end of the sub pawl mounting body 310 b.

In this embodiment, the hinge block 520 is disposed at the end of the sub-pawl installation body 310b, the end of the sub-pawl installation body 310b is provided with two grooves 521 at two sides, and the sub-pawl installation body 310b between the two grooves 521 is configured as the hinge block 520.

In this embodiment, the hinge slot 421 is disposed at the end of the main jaw mounting body 310a, two second engaging lugs 420 are disposed at the end of the main jaw mounting body 310a, and the hinge slot 421 is formed between the two second engaging lugs 420.

Example 6

The invention also provides a positioning hoop/fixture, wherein the positioning hoop is provided with any one or more of the jaw pair provided in the embodiment 2, the jaw adjusting mechanism provided in the embodiment 3 and the locking mechanism provided in the embodiment 5.

This embodiment is a preferred embodiment, and has the jaw pair provided in embodiment 2, the jaw adjusting mechanism provided in embodiment 3, and the locking mechanism provided in embodiment 5.

Example 7

This embodiment provides an in-line system for transmission line insulator replacement, which has the positioning hoop/clamp and the pull-back mechanism of embodiment 6.

Example 8

Based on the on-line system for replacing the insulator of the power transmission line in embodiment 7, the present embodiment provides a replacement method for the insulator of the power transmission line, which specifically includes the following steps:

s1, the positioning hoop can be opened by screwing the nut 611 and rotating the locking screw 612 to enable the locking screw to rotate out of the open slot 513;

s2, clamping the opened positioning hoop into the insulator corresponding to the insulator string, rotating the locking screw 612 to clamp the positioning hoop into the open slot 513, and screwing the nut 611 to lock the positioning hoop at the insulator string;

s3, driving the front claw 140a and the rear claw 140b at the positioning hoop to be assembled at the corresponding position of the steel cap 220 by rotating the screw member 720, so that the front positioning hoop 110 and the rear positioning hoop 120 are tightly held;

s4, the distance between the front positioning hoop 110 and the rear positioning hoop 120 is reduced through the pull-back piece 130, so that the tension of the insulator to be replaced is relieved, the insulator to be replaced is conveniently taken down, and a new insulator is installed;

s5, resetting the distance between the front positioning hoop 110 and the rear positioning hoop 120 through the pull-back piece 130;

s6, the positioning hoop can be opened by screwing the nut 611 and rotating the locking screw 612 to enable the locking screw to rotate out of the open slot 513, and the front positioning hoop 110 and the rear positioning hoop 120 assembled on the insulator string 100 are detached.

In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims (28)

1. The utility model provides an online system for transmission line insulator is changed which characterized in that: the insulator chain fixing device comprises a front positioning hoop (110) and a rear positioning hoop (120) which are arranged at different insulators of the same insulator chain (100), wherein a pull-back piece (130) used for adjusting the distance between the front positioning hoop (110) and the rear positioning hoop (120) is arranged between the front positioning hoop (110) and the rear positioning hoop (120);

a front claw (140 a) capable of sliding along the radial direction is arranged in the front positioning hoop (110) through a claw adjusting mechanism, and the front claw (140 a) is used for being matched with a steel cap (220) to fix the front positioning hoop (110) at the insulator string (100);

a rear claw (140 b) capable of sliding along the radial direction is arranged in the rear positioning hoop (120) through a claw adjusting mechanism, and the rear claw (140 b) is used for being matched with the steel cap (220) to realize that the rear positioning hoop (110) is fixed at the insulator string (100).

2. The on-line system for transmission line insulator replacement according to claim 1, wherein: preceding location staple bolt (110) and back location staple bolt (120) all include two and are non-closed ring shape and location staple bolt body (300) that mutually supporting's jack catch installation body (310) assembly formed, one of two jack catch installation bodies (310) is main calorie of main installation body (310 a), another in two jack catch installation bodies (310) is vice jack catch installation body (310 b), and the one end of main jack catch installation body (310 a) is articulated through articulated vice (330) and vice jack catch installation body (310 b) corresponding one end, and the other end of main jack catch installation body (310 a) passes through buckle spare (340) and corresponds the other end with vice jack catch installation body (310 b) and can dismantle the connection.

3. An on-line system for transmission line insulator replacement according to claim 2, characterized in that: buckle spare (340) is including locating main jack catch installation body (310 a) the main connecting portion of other end department, locate vice jack catch installation body (310 b) the vice connecting portion of other end department and be used for realizing the retaining member of locking between vice connecting portion and the main connecting portion, main connecting portion have constant head tank (411), and vice connecting portion have locating plate (511) that stretch into in constant head tank (411), and the corresponding lateral wall of locating plate (511) and constant head tank (411) is used for forming the location between main connecting portion and the vice connecting portion in the axial of location staple bolt body (300).

4. An on-line system for transmission line insulator replacement according to claim 3, characterized in that: the main connecting part comprises two first connecting lugs (410) which are oppositely arranged, a positioning groove (411) is formed between the two first connecting lugs (410), the auxiliary connecting part is provided with a stepped groove (512) which is used for the first connecting lug (410) to extend into, one side wall of the stepped groove (512) is formed by a positioning plate (511) and is mutually limited with the inner side wall of the corresponding first connecting lug (410), and the other side wall of the stepped groove (512) is mutually limited with the end face of the corresponding first connecting lug (410).

5. The on-line system for transmission line insulator replacement according to claim 4, wherein: the retaining member is including rotationally locating between two first connection ears (410) and axial and location staple bolt body (300) axial direction parallel's locking round pin axle (610), is equipped with axial and locking round pin axle (610) vertically locking screw (611) on locking round pin axle (610), and locking screw (611) are gone up the screw thread and are equipped with and are used for with ladder groove (512) nut (612) of the terminal surface department of another lateral wall support tightly corresponding first connection ear (410).

6. The on-line system for transmission line insulator replacement according to claim 5, wherein: the auxiliary connecting part is provided with an open groove (513) for the locking screw (611) to be clamped in around the locking pin shaft (610) in a rotating mode, the end portion, far away from the locking pin shaft (610), of the locking screw (611) extends out of the open groove (513) when the locking screw (611) is clamped in the open groove (513), and the nut (612) is connected to the end portion, extending out of the open groove (513), of the locking screw (611) in a threaded mode and abuts against the side face of the auxiliary connecting part.

7. An on-line system for transmission line insulator replacement according to claim 5, characterized in that: the end surface of the positioning plate (511) is provided with an arc-shaped limiting groove (514) matched with the outer side wall of the locking pin shaft (610).

8. An on-line system for transmission line insulator replacement according to claim 2, characterized in that: the hinge pair (330) is provided with a hinge block (520), a hinge groove (421) and a hinge shaft, and the hinge block (520) and the hinge groove (421) form hinge fit through the hinge shaft; the hinge block (520) has a protrusion structure and is formed at one of the one end of the main jaw mounting body (310 a) and the one end of the sub jaw mounting body (310 b), and the hinge groove (421) has a groove structure and is formed at the other of the one end of the main jaw mounting body (310 a) and the one end of the sub jaw mounting body (310 b).

9. An on-line system for transmission line insulator replacement according to claim 1, characterized in that: the jaw adjusting mechanism comprises a jaw assembling part (710) arranged at the jaw (140), a jaw assembling groove (431) arranged at the jaw mounting body (310) and an adjusting component, the jaw mounting body (310) is in a non-closed circular ring shape, the jaw assembling groove (431) is radially arranged along the jaw mounting body (310), and the jaw (140) is radially and slidably arranged at the jaw assembling groove (431); the adjustment assembly is engaged with one of the jaw mounting portion (710) and the jaw mounting body (310) in a radially relatively fixed manner, and the adjustment assembly is engaged with the other of the jaw mounting portion (710) and the jaw mounting body (310) in a radially adjustable manner.

10. An on-line system for transmission line insulator replacement according to claim 9, characterized in that: the adjusting assembly comprises a screw rod piece (720), a mounting piece arranged at one position and a threaded piece arranged at the other position, wherein the mounting piece is used for forming rotating fit with the screw rod piece (720), and the threaded piece is used for forming threaded fit with the screw rod piece (720).

11. An in-line system for transmission line insulator replacement according to claim 10, wherein: the mounting member includes a first mounting groove (432) formed at the one, and the screw member includes a second mounting groove (711) formed at the other; the side walls of the first mounting groove (432) and the second mounting groove (711) together form a circumferential mounting surface for mating with the side wall of the screw member (720).

12. The on-line system for transmission line insulator replacement according to claim 11, wherein: a positioning piece (730) is arranged at one position, and the positioning piece (730) is used for realizing relative fixed matching between the screw rod piece (720) and the one position in the radial direction;

the positioning member (730) comprises a convex structure which is configured to be protruded out of the first mounting groove (432) towards the inner periphery, the convex structure is fixedly matched with the first mounting groove (432) in a radial direction, a groove structure which is contracted towards the inner periphery is formed at the corresponding side wall of the screw member (720), and the groove structure and the convex structure form interference in the radial direction of the screw member (720).

13. An in-line system for transmission line insulator replacement according to claim 12, wherein: the positioning piece (730) comprises a positioning block (810) detachably arranged at the jaw mounting body (310), and a positioning block assembly hole (433) used for being matched with the positioning block (810) is formed between the corresponding end face of the jaw mounting body (310) and the side wall of the first mounting groove (432); the protruding structure is formed at the inner end of the positioning block (810), and the outer end of the positioning block (810) forms a positioning block mounting structure.

14. An in-line system for transmission line insulator replacement according to claim 13, wherein: the positioning block mounting structure comprises a positioning block mounting plate (811) protruding out of a positioning block (810) towards the periphery, a mounting plate mounting groove (434) matched with the positioning block mounting plate (811) is formed at the corresponding end face, and the positioning block mounting plate (811) is detachably arranged at the mounting plate mounting groove (434) through a connecting piece.

15. An in-line system for transmission line insulator replacement according to claim 13, wherein: the groove structure comprises 2 annular clamping grooves (911) arranged at intervals, an annular part (912) is formed between the 2 annular clamping grooves (911), and a matched positioning clamping groove (821) is formed at the position of the protruding structure corresponding to the annular part (912).

16. The on-line system for transmission line insulator replacement according to claim 15, wherein: the convex structure is provided with a positioning snap ring (831) which is matched with any annular snap groove (911).

17. An on-line system for transmission line insulator replacement according to claim 1, characterized in that: the two ends of the pull-back piece (130) are respectively provided with a front connecting part (131) and a rear connecting part (132) which are matched with the front positioning hoop (110) and the rear positioning hoop (120), the front positioning hoop (110) corresponds to the front connecting part (131) to form a front connector (111), the rear positioning hoop (120) corresponds to the rear connecting part (132) to form a rear connector (121), and the structures of the front connector (111) and the rear connector (121) are used for preventing the pull-back piece (130) from interfering with the periphery of the toughened glass piece (210).

18. An in-line system for transmission line insulator replacement according to claim 17, wherein: at least 2 pullback pieces (120) are uniformly distributed along the circumferential direction of the insulator string (100).

19. An in-line system for transmission line insulator replacement according to claim 17, wherein: the front connecting body (111) is hinged with the front connecting part (131) through a front hinge pair.

20. The on-line system for transmission line insulator replacement according to claim 17, wherein: the rear connecting body (121) is hinged with the rear connecting part (132) through a rear hinge pair.

21. The on-line system for transmission line insulator replacement according to claim 17, wherein: the pullback member (130) is a mechanical lead screw or a hydraulic lead screw.

22. An on-line system for transmission line insulator replacement according to claim 1, characterized in that: the front jaw (140 a) is provided with a front jaw main body part (1010) and a front jaw clamping part (1020), and the rear jaw (140 b) is provided with a rear jaw main body part (1110) and a rear jaw clamping part (1120);

the front claw main body part (1010) and the rear claw main body part (1110) are used for achieving spaced assembly of the front claw (140 a) and the rear claw (140 b), the front claw clamping opening part (1020) is used for being matched with the corresponding steel cap (220) from the far toughened glass piece (210) side of the steel cap flange (221), and the rear claw clamping opening part (1120) is used for being matched with the corresponding steel cap (220) from the near toughened glass piece (210) side of the steel cap flange (221).

23. The on-line system for transmission line insulator replacement of claim 22, wherein: the front claw main body part (1010) is provided with one end of the front claw main body matched with the corresponding steel cap (220) and the other end of the front claw main body far away from the corresponding steel cap (220), the front claw main body part (1010) is further provided with an upper plane (1011) of the front claw main body for assembling and a lower inclined plane (1012) of the front claw main body opposite to the upper plane, and the thickness of the front claw main body part (1010) is gradually increased from the other end of the front claw main body to one end of the front claw main body.

24. An in-line system for transmission line insulator replacement according to claim 23, wherein: the front claw clamping opening part (1020) is formed at one end of the front claw main body part, and the front claw clamping opening part (1020) is provided with a first matching surface (1021) which is used for matching with the side wall of the corresponding steel cap (220) and is bent in an arc shape.

25. An in-line system for transmission line insulator replacement according to claim 24, wherein: the first mating surface (1021) has a width that is the same as a thickness of the front jaw body portion (1010) at one end of the front jaw body.

26. An in-line system for transmission line insulator replacement according to claim 25, wherein: the rear claw main body part (1110) is provided with one end of the rear claw main body matched with the corresponding steel cap (220) and the other end of the rear claw main body far away from the corresponding steel cap (220), the rear claw main body part (1110) is further provided with an upper plane (1111) of the rear claw main body for assembling and a lower inclined plane (1112) of the rear claw main body opposite to the upper plane, and the thickness of the rear claw main body part (1110) is gradually increased from the other end of the rear claw main body to one end of the rear claw main body between the upper plane and the lower inclined plane.

27. An in-line system for transmission line insulator replacement according to claim 26, wherein: the rear claw clamping opening part (1120) is formed at one end of the rear claw main body, and the rear claw clamping opening part (1120) is provided with a second matching surface (1121) which is used for matching with the side wall, located between the steel cap flange (221) and the toughened glass piece (210), of the corresponding steel cap (220) and is curved in an arc shape.

28. An in-line system for transmission line insulator replacement according to claim 27, wherein: the side surface of the rear claw clamping opening part (1120) close to the upper plane (1111) of the rear claw main body forms a third matching surface (1122), and the third matching surface (1122) is used for matching with the outer side wall of the corresponding steel cap flange (221); the rear claw jaw portion (1120) further has a rear claw jaw portion lower plane opposed to the third mating surface (1122), and a thickness of the rear claw jaw portion (1120) is configured to be gradually reduced in a direction away from the rear claw body portion (1110) between the rear claw jaw portion lower plane and the third mating surface (1122).

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