CN115173299B - 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 anchor ear and a rear positioning anchor ear 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 anchor ear and the rear positioning anchor ear is arranged between the front positioning anchor ear and the rear positioning anchor ear; a front claw capable of sliding along the radial direction is arranged in the front positioning hoop through a claw adjusting mechanism, and the front claw is used for being matched with the iron cap to fix the front positioning hoop at the suspension insulator string; the rear positioning hoop is internally provided with a rear claw capable of sliding along the radial direction through a claw adjusting mechanism, and the rear claw is used for being matched with the iron cap to fix the rear positioning hoop at the suspension insulator string. Through above-mentioned structure, assemble on hanging insulator string through preceding location staple bolt and back location staple bolt, adjust the distance between preceding location staple bolt and the back location staple bolt through the pullback piece, make the pulling force between the insulator remove, be convenient for carry out the change of insulator.

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 insulators of a power transmission line.

Background

Insulators are commonly used electrical devices in electrical transmission lines and are structurally composed of a plurality of insulator elements that are combined together to insulate conductors from towers and the earth. The insulators are classified into porcelain insulators, glass insulators, composite insulators and the like, and at present, most of insulator strings used in high-voltage transmission lines are assembled into strings by adopting glass insulators. As shown in fig. 1-2, the existing glass insulator comprises a toughened glass piece 210, steel caps 220 and steel feet 230 respectively arranged on two sides of the toughened glass piece 210, clamping grooves 222 for clamping corresponding steel feet 230 are formed in the end portions of the steel caps 220, the glass insulators are assembled into strings through the structure, and steel cap flanges 221 are arranged on the outer walls of the steel caps 220, close to the toughened glass piece 210, along the circumferential direction of the steel caps.

In order to ensure reliable operation of the insulator string, not only regular inspection but also regular maintenance of the insulator string and replacement of the insulator with problems are required. Because insulator string is assembled on high altitude transmission tower for the insulator that goes wrong carries out the change operation degree of difficulty huge, however lack the better device in the prior art and carry out the change of insulator.

Disclosure of Invention

In view of some or some of the deficiencies of the prior art, the present invention provides an in-line system for transmission line insulator replacement.

In order to solve the technical problems, the invention is solved by the following technical scheme.

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 the front claw is used for being matched with the steel cap to fix the front positioning hoop at the insulator string;

the rear positioning hoop is internally provided with a rear claw capable of sliding along the radial direction through a claw adjusting mechanism, and the rear claw is used for being matched with a steel cap to fix the rear positioning hoop at the insulator string.

According to the invention, the front positioning anchor ear and the rear positioning anchor ear are assembled on the insulator string, the claw is matched with the corresponding steel cap through the claw adjusting mechanism, the front positioning anchor ear and the rear positioning anchor ear are tightly held at the insulator, and meanwhile, the distance between the front positioning anchor ear and the rear positioning anchor ear 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.

Preferably, the front positioning anchor ear and the rear positioning anchor ear comprise positioning anchor ear bodies formed by assembling two claw installation bodies which are in a non-closed circular shape and are matched with each other, one of the two claw installation bodies is a main claw installation body, the other of the two claw installation bodies is a secondary claw installation body, one end of the main claw installation body is hinged with one corresponding end of the secondary claw installation body through a hinge pair, and the other end of the main claw installation body is detachably connected with the other corresponding end of the secondary claw installation body through a clamping piece.

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

Preferably, the fastener comprises a main connecting part arranged at the other end of the main claw mounting body, an auxiliary connecting part arranged at the other end of the auxiliary claw mounting body and a locking part used for locking between the auxiliary connecting part and the main connecting part, the main connecting part is provided with a positioning groove, the auxiliary connecting part is provided with a positioning plate extending into the positioning groove, and the corresponding side walls of the positioning plate and the positioning groove are used for positioning the main connecting part and the auxiliary connecting part in the axial direction of the positioning hoop body.

According to the invention, through the matching of the positioning plate and the positioning groove, when the other end of the main claw mounting body is connected with the other end of the auxiliary claw mounting body, the main claw mounting body is positioned along the axial direction of the positioning anchor ear body, and the shaking of the connecting part of the clamping piece is preferably avoided, so that the claws arranged on the positioning anchor ear are preferably positioned on the same plane, and are convenient to be matched with the corresponding steel caps.

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

Through the structure of the invention, the joint of the clamping piece can be positioned along the axial direction of the positioning hoop body, and meanwhile, the stress of the clamping piece when the clamping piece is connected with the main connecting part and the auxiliary connecting part is realized, so that the positioning hoop body can be conveniently closed and assembled on the insulator string.

Preferably, the locking piece comprises a locking pin shaft which is rotatably arranged between the two first connecting lugs and axially parallel to the axial direction of the positioning hoop body, a locking screw rod which is axially perpendicular to the locking pin shaft is arranged on the locking pin shaft, and a nut for propping the other side wall of the stepped groove against the end face of the corresponding first connecting lug is arranged on the locking screw rod in a threaded manner.

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

Through the structure in this embodiment for locking screw rod rotates the card along with the locking round pin axle and goes into the open slot, makes its butt tightly realize the connection between main connecting portion and the vice connecting portion on the side of vice connecting portion through screwing up the nut this moment, and the locking of preferred realization location staple bolt is relieved its butt tightly on the side of vice connecting portion through screwing up the nut, stirs locking screw rod and makes its roll out the open slot and releases the connection between main connecting portion and the vice connecting portion, and the opening of preferred realization location staple bolt is convenient for its cooperation with steel cap department.

Preferably, the end face of the positioning plate is provided with an arc-shaped limiting groove matched with the outer side wall of the locking pin shaft, and the locking pin shaft is preferably further limited, so that the main connecting part and the auxiliary connecting part 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 form 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 part arranged at the jaw, a jaw assembling groove arranged at the jaw mounting body and an adjusting assembly, wherein the jaw mounting body is in a non-closed annular 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 assembly is engaged with one of the jaw assembly and the jaw mounting in a radially relatively fixed manner, and the adjusting assembly is engaged with the other of the jaw assembly and the jaw mounting in a radially adjustable manner.

Through the arrangement of the jaw adjusting mechanism, an operator can adjust the jaw to move along the jaw assembly groove through the jaw adjusting mechanism in actual operation, so that the position of the jaw can be adjusted, and the positioning anchor ear can be adapted to insulator strings with different diameter types, thereby the applicability of insulator replacement equipment for the insulator strings is wider.

Preferably, the adjusting assembly comprises a screw member, a mounting member arranged at one position and a threaded member arranged at the other position, wherein the mounting member is used for forming a running fit with the screw member, and the threaded member is used for forming a threaded fit with the screw member.

The movement of the clamping jaw is preferably regulated by the cooperation of the screw rod and the screw member.

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 together form a circumferential assembly surface for being matched with the side wall of the screw member, and the screw member is preferably mounted at the jaw assembly part and the jaw mounting body.

Preferably, the one part is provided with a positioning piece, and the positioning piece is used for realizing the relative fixed fit between the screw rod and the one part in the radial direction;

the positioning piece comprises a protruding structure protruding from the first mounting groove towards the inner periphery, the protruding structure is in relatively fixed fit with the first mounting groove in the radial direction, a groove structure shrinking towards the inner periphery is formed at the corresponding side wall of the screw piece, and the groove structure and the protruding structure are interfered in the radial direction of the screw piece.

Through the matching arrangement of the groove structure and the protruding structure, the radial limit of the positioning piece on the screw rod is preferably realized.

Preferably, one of the positioning pieces is a jaw mounting body, the positioning piece comprises a positioning piece detachably arranged at the jaw mounting body, and a positioning piece assembly hole for being matched with the positioning piece is formed between the corresponding end surface of the jaw mounting body and the side wall of the first mounting groove; the protruding structure is formed at the inner end of the positioning block, and the outer end of the positioning block forms a positioning block mounting structure, so that the protruding structure and the first mounting groove are preferably in relatively fixed fit in the radial direction.

Preferably, the positioning block mounting structure comprises a positioning block mounting plate protruding out of the positioning block towards the periphery, a mounting plate assembly 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 assembly groove through a connecting piece, and the positioning piece is preferably dismounted at the jaw mounting body.

Preferably, the groove structure comprises 2 annular clamping grooves which are arranged at intervals, an annular part is formed among the 2 annular clamping grooves, and the convex structure corresponds to the annular part to form a matched positioning clamping groove.

Preferably, the convex structure is provided with a matched positioning clamping ring corresponding to any annular clamping groove.

By the construction in the present invention, rotatable mounting of the screw member is preferably achieved.

Preferably, the front connecting part and the rear connecting part which are matched with the front positioning anchor ear and the rear positioning anchor ear are respectively formed at the two ends of the back pulling piece, the front connecting body is formed at the position, corresponding to the front connecting part, of the front positioning anchor ear, the rear connecting body is formed at the position, corresponding to the rear connecting part, of the rear positioning anchor ear, and the front connecting body and the rear connecting body are used for realizing that the back pulling piece does not interfere 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 extrusion between the pull-back piece and the toughened glass piece of the insulator string is avoided.

Preferably, the pullback pieces are uniformly distributed with at least 2 pieces along the circumferential direction of the insulator string, so that stress between the front positioning anchor ear and the rear positioning anchor ear is preferably uniform, and the spacing between the front positioning anchor ear and the rear positioning anchor ear is convenient to adjust through the pullback pieces.

Preferably, the front connector and the front connecting part are hinged by a front hinge pair.

Preferably, the rear connector and the rear connecting part are hinged by 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, and the distance between the front positioning hoop and the rear positioning hoop is adjusted.

Preferably, the front claw has a front claw body portion and a front claw engaging portion, and the rear claw has a rear claw body portion and a rear claw engaging portion;

the front claw body part and the rear claw body part are used for realizing the interval assembly of the front claw and the rear claw, the front claw bayonet part is used for being matched with the corresponding steel cap from the far toughened glass piece side of the steel cap flange, and the rear claw bayonet part is used for being matched with the corresponding steel cap from the near toughened glass piece side of the steel cap flange.

According to the invention, the front claw clamping part and the rear claw clamping part are matched with the corresponding positions of the steel cap, so that the front positioning anchor ear and the rear positioning anchor ear are tightly held on the insulator string, and the problem of inconvenient tightly holding of the positioning anchor ear on the insulator string due to tight connection between insulators is preferably solved.

Preferably, the front claw body portion has one end of the front claw body for mating with the corresponding steel cap and the other end of the front claw body remote from the corresponding steel cap, and further has an upper front claw body plane for assembly and a lower front claw body inclined plane disposed opposite to the upper plane, the upper plane and the lower inclined plane being configured such that the thickness of the front claw body portion gradually increases from the other end of the front claw body to the one end of the front claw body.

Through the structure in the invention, the strength of the front claw is better ensured, and the front positioning hoop is ensured to be held tightly by the cooperation of the front claw clamping part and the steel cap.

Preferably, a front claw bayonet part is formed at one end of the front claw main body part, the front claw bayonet part is provided with a first matching surface which is used for matching with the side wall of the corresponding steel cap and is curved in an arc shape, and matching between the front claw and the side wall of the corresponding steel cap is preferably facilitated.

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 body portion has one end of the rear jaw body for being fitted with the corresponding steel cap and the other end of the rear jaw body remote from the corresponding steel cap, and further has an upper plane of the rear jaw body for fitting and a lower inclined plane of the rear jaw body disposed opposite to the upper plane, the upper plane and the lower inclined plane being configured such that the thickness of the rear jaw body portion gradually increases from the other end of the rear jaw body to the one end of the rear jaw body.

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

Preferably, a rear claw bayonet part is formed at one end of the rear claw main body, and the rear claw bayonet part is provided with a second matching surface which is used for being matched with the side wall of the corresponding steel cap between the steel cap flange and the toughened glass piece and is curved in an arc shape.

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

Through the structure in the invention, the rear claw can be clamped between the steel cap flange and the toughened glass piece, the rear positioning hoop is clamped at the steel cap by 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 spacing between the front positioning hoop and the rear positioning hoop by the pull-back mechanism are facilitated.

Drawings

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

FIG. 2 is a schematic cross-sectional view of a glass insulator in an embodiment;

fig. 3 is a schematic structural view of a replacement device for an insulator of a power transmission line in the embodiment;

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

fig. 5 is a schematic cross-sectional view of a rear positioning anchor at an insulator in an embodiment

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

fig. 7 is a schematic structural view of the main jaw mounting body in the embodiment;

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

FIG. 9 is a schematic view of a locking member according to an embodiment;

fig. 10 is a schematic structural view of a claw adjusting mechanism in the embodiment;

FIG. 11 is a schematic view of a positioning member according to an embodiment;

FIG. 12 is a schematic view of the structure of a screw member in the embodiment;

FIG. 13 is a schematic view of the structure of the front claw in the embodiment;

FIG. 14 is a schematic view of the structure of the rear pawl in the embodiment;

fig. 15 is a schematic structural view of the pullback member in the embodiment.

Detailed Description

For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present invention and are not intended to be limiting.

Example 1

In order to achieve the purpose of replacing any piece of insulator in an insulator string which is put into use, the embodiment provides a replacement device for an insulator string of a power transmission line, which comprises an equipment main body.

As shown in fig. 3, the apparatus body in this embodiment has a pull-back mechanism and a positioning anchor ear, where the positioning anchor ear includes a front positioning anchor ear 110 and a rear positioning anchor ear 120 that are respectively disposed at two ends of the pull-back mechanism. The front positioning anchor ear 110 is used for being matched with an insulator positioned at the front end of the insulator to be replaced, the rear positioning anchor ear 120 is used for being matched with an insulator positioned 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 anchor ear 110 and the rear positioning anchor ear 120.

Based on this kind of structure makes, when specifically using, can hold tightly from the insulator of front end and the insulator of rear end through preceding location staple bolt 110 and back location staple bolt 120, later can realize waiting to change the pulling force of insulator department and remove through the pullback mechanism, can comparatively conveniently realize waiting to change the change of insulator this moment, so realized the online change of the arbitrary insulator in the insulator chain that has put into use better.

Considering that all insulators in the insulator string are tightly connected and there are no more positions for holding, the positioning anchor ear in the embodiment can realize better matching with the corresponding insulators through a structure such as a claw; the claws can be implemented 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 anchor ear 110 and the rear positioning anchor ear 120, so that the engagement with the corresponding insulator can be preferably implemented. It should be understood that the structures of the pawl 140 or the pawl pair and the like given below provide only one preferred solution, which is only intended to illustrate the solution of the present invention and not to limit it. In fact, the pawl 140 or pawl pair can be implemented using other existing configurations.

In addition, considering that the positioning hoop needs to be compatible with insulators with diameter sizes varying in a certain range, when the positioning hoop is provided with the clamping jaw 140, the positioning hoop can be provided with a clamping jaw adjusting mechanism described below to realize assembly of the clamping jaw 140, so that insulators of various types can be matched better, and the clamping 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 and not limiting; in fact, the jaw adjustment mechanism can also be implemented using other existing configurations.

For the purpose of better adjusting the distance between the front positioning anchor ear 110 and the rear positioning anchor ear 120, the pull-back mechanism in this embodiment can adopt the structure described below. It should be understood that the pullback mechanism presented below provides only one preferred solution, which is intended to be illustrative of the solution of the present invention and not limiting; in practice, the pullback mechanism can also be implemented using other existing configurations.

In addition, in order to realize the better cooperation between the positioning anchor ear and the corresponding insulator, the positioning anchor ear in the embodiment can be provided with a locking mechanism described below, so that the assembly between the positioning anchor ear and the corresponding insulator can be preferably 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 that are arranged at intervals, and the front jaw 140a and the rear jaw 140b are used to cooperate with different insulators of the same insulator string 100;

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

the front jaw body 1010 and the rear jaw body 1110 are used to achieve the spaced assembly of the front jaw 140a and the rear jaw 140b, the front jaw bayonet 1020 is used to engage the corresponding steel cap 220 from the far tempered glass piece 210 side of the steel cap flange 221, and the rear jaw bayonet 1120 is used to engage the corresponding steel cap 220 from the near tempered glass piece 210 side of the steel cap flange 221.

In this embodiment, one front claw 140a and one rear claw 140b form a claw pair, and in the actual use process, a plurality of groups of claw pairs can be arranged to ensure the clasping effect of the positioning anchor ear on the insulator string; in this embodiment, the front claw bayonet 1020 and the rear claw bayonet 1120 are matched with the positions corresponding to the steel cap 220, so as to achieve the tight holding of the front positioning anchor ear 110 and the rear positioning anchor ear 120 on the insulator string, and preferably solve the problem of inconvenient holding of the positioning anchor ear on the insulator string due to tight connection between insulators.

In this embodiment, the front jaw body 1010 has one end of the front jaw body for mating with the corresponding steel cap 220 and the other end of the front jaw body remote from the corresponding steel cap 220, and the front jaw body 1010 further has an upper front jaw body plane 1011 for assembly and a lower front jaw body inclined plane 1012 disposed opposite to the upper plane, the upper plane and the lower inclined plane being configured such that the thickness of the front jaw body 1010 gradually increases from the other end of the front jaw body to the one end of the front jaw body.

Through the construction in this embodiment, the thickness of the front claw body 1010 gradually increases 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 higher as the front claw body 1010 approaches the steel cap 220, thereby preferably ensuring the strength of the front claw 140a and ensuring that the front positioning hoop 110 is clasped by the cooperation of the front claw bayonet 1020 and the steel cap 220.

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

Through the configuration in this embodiment, the first mating surface 1021 is attached to the side wall of the steel cap 220, which is located on the side of the far toughened glass piece 210 of the steel cap flange 221, so that the front positioning hoop is preferably held tightly at the steel cap 220 by the front claw 140a, and meanwhile, the front claw 140a is positioned by the cooperation between the front claw bayonet part 1020 and the steel cap flange 221, so that the front claw 140a is convenient to bear force, and the adjustment and the maintenance of the spacing 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 mating surface 1021 is the same as the thickness of the front claw body 1010 at one end of the front claw body, so that the strength of the front claw bayonet 1020 is preferably ensured, and the mating with the steel cap 220 is facilitated.

In this embodiment, the rear jaw body 1110 has one end of the rear jaw body for mating with the corresponding steel cap 220 and the other end of the rear jaw body remote from the corresponding steel cap 220, and the rear jaw body 1110 further has an upper rear jaw body flat surface 1111 for assembly and a lower rear jaw body inclined surface 1112 disposed opposite to the upper flat surface, the upper flat surface and the lower inclined surface being configured therebetween 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.

Through the construction in this embodiment, the thickness of the rear claw body 1110 gradually increases from the other end far from the steel cap 220 to one end, so that the strength of the rear claw body 1110 is higher as the rear claw body 1110 approaches the steel cap 220, thereby preferably ensuring the strength of the rear claw 140b, and ensuring that the rear positioning hoop 110 is clasped by the cooperation of the rear claw bayonet 1120 and the steel cap 220.

In this embodiment, a rear jaw bayonet 1120 is formed at one end of the rear jaw body, and the rear jaw bayonet 1120 has a second mating surface 1121 curved in an arc for mating with a sidewall of the corresponding steel cap 220 between the steel cap flange 221 and the tempered glass member 210.

By the configuration in this embodiment, the second mating surface 1121 is attached to the side wall of the steel cap 220 between the steel cap flange 221 and the tempered glass member 210, so that the rear claw bayonet 1120 is preferably secured to the steel cap 220.

In this embodiment, the side of the rear claw bayonet 1120 near the rear claw main body upper plane 1111 forms a third mating surface 1122, and the third mating surface 1122 is used to mate with the outer side wall of the corresponding steel cap flange 221; the rear jaw bayonet portion 1120 further has a rear jaw bayonet lower plane surface opposite to the third mating surface 1122, and the thickness of the rear jaw bayonet portion 1120 is configured to be gradually reduced in a direction away from the rear jaw main body portion 1110 between the rear jaw bayonet lower plane surface and the third mating surface 1122.

Through the configuration in this embodiment, make third mating surface 1122 can laminate with the lateral wall of steel cap flange 221, cooperate second mating surface 1121 and steel cap 220 to lie in steel cap flange 221 and the lateral wall between toughened glass piece 210 mutually and laminate, preferably make back claw bayonet part 1120 can block into between steel cap flange 221 and toughened glass piece 210, preferably realize making the holding of back location staple bolt in steel cap 220 department tightly through back claw 140b, simultaneously, cooperate with steel cap flange 221 through third mating surface 1122, guaranteed back claw 140 b's atress, be convenient for the adjustment and the maintenance of back-pulling mechanism to the interval between front location staple bolt 110 and back location staple bolt 120.

In this embodiment, the front jaw main body 1010 has a front jaw fitting portion 710a formed at the front jaw main body upper plane 1011, the front jaw fitting portion 710a for achieving movable fitting of the front jaw 140 a.

By the configuration in this embodiment, the assembly of the front claw 140a to the front positioning anchor 110 is preferably achieved.

In this embodiment, the rear jaw main body portion 1110 has a rear jaw fitting portion 710b formed at the rear jaw main body upper plane 1111, the rear jaw fitting portion 710b for effecting movable fitting of the rear jaw 140 b.

By the configuration in this embodiment, the fitting of the rear claw 140b at the rear positioning anchor 120 is preferably achieved.

Example 3

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

In this embodiment, the claw 140 is slidably assembled at the claw assembly groove 431 through the claw assembly portion 710, and through the setting of the claw adjusting mechanism, so that an operator can adjust the claw 140 to move along the claw assembly groove 431 through the claw adjusting mechanism during actual operation, so that the position of the claw 140 can be adjusted, and the positioning anchor ear can be adapted to insulator strings with the same tonnage and different steel cap sizes, so that the applicability of the replacing device for the insulator of the power transmission line is wider.

In this embodiment, the adjusting assembly includes 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 screw fit with the screw member 720.

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

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

By the configuration in the present embodiment, the installation of the screw member 720 at the jaw fitting portion 710 and the jaw installation body 310 is preferably achieved.

In this embodiment, the positioning member 730 is disposed at the one position, and the positioning member 730 is used to achieve a relatively fixed fit between the screw member 720 and the one position in the radial direction, preferably to achieve the disassembly and assembly of the screw member 720 at the one position.

In this embodiment, the positioning member 730 is disposed at the one position, and the positioning member 730 is configured to achieve a relatively fixed fit between the screw member 720 and the one position in a radial direction;

the positioning member 730 includes a protrusion structure configured to protrude inward from the first mounting groove 432, the protrusion structure being relatively fixedly fitted with the first mounting groove 432 in a radial direction, a groove structure shrinking inward being formed at a corresponding side wall of the screw member 720, the groove structure interfering with the protrusion structure in the radial direction of the screw member 720.

By the configuration in this embodiment, the positioning member 730 is preferably configured to limit the radial position of the screw member 720 by the cooperation of the protrusion structure and the groove structure, and radial relative fixation between the screw member 720 and the one is preferably realized.

In this embodiment, one of the positioning members 730 is a jaw mounting body 310, and the positioning member 730 includes a positioning block 810 detachably disposed at the jaw mounting body 310, and a positioning block assembly 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 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.

Through the arrangement of the positioning block assembly holes 433 and the positioning blocks 810 in the embodiment, the positioning blocks 810 are assembled in the positioning block assembly holes 433, so that the positioning 730 is mounted in the jaw mounting body 310, and the protruding structure and the first mounting groove 432 are preferably in relatively 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, and a mounting plate mounting groove 434 for mating with the positioning block mounting plate 811 is formed at the corresponding end surface, and the positioning block mounting plate 811 is detachably disposed at the mounting plate mounting groove 434 by a connecting member, so that the positioning member 730 is preferably mounted and dismounted at the jaw mounting body 310.

In this embodiment, the groove structure includes 2 annular clamping grooves 911 arranged at intervals, an annular portion 912 is formed between the 2 annular clamping grooves 911, and a matched positioning clamping groove 821 is formed at a position corresponding to the annular portion 912 in the protruding structure;

the convex structure forms a matched positioning clamping ring 831 corresponding to any annular clamping groove 911.

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

In this embodiment, the jaw assembly 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 along the radial direction of the jaw mounting body 310 and a limiting pin disposed at the jaw mounting body 310, where the jaw mounting body 310 corresponds to the limiting pin, and the limiting pin is provided with a limiting pin assembly hole 435, and the limiting pin interferes with the limiting groove 712 through the limiting pin assembly hole 435.

Through the configuration in this embodiment, the stop pin is inserted into the stop pin assembly hole 435 and into the stop groove 712, so that the stop pin can limit the moving distance of the claw 140 along the claw assembly groove 431, and preferably, the insulator string with the positioning and adapting diameter varying in a certain range is realized.

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

With the configuration in the present embodiment, it is preferable that an operator drives the screw member 720 to rotate by a hexagonal wrench at the time of actual operation, to achieve movement adjustment of the claw 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 anchor ear 110 and the rear positioning anchor ear 120, where the front positioning anchor ear 110 and the rear positioning anchor ear 120 are used for cooperating with different insulators of the same insulator string 100, and the pull-back member 130 is used for adjusting the distance between the front positioning anchor ear 110 and the rear positioning anchor ear 120;

the front connecting portion 131 and the rear connecting portion 132 are formed at two ends of the pull-back piece 130 and are used for being matched with the front positioning hoop 110 and the rear positioning hoop 120 respectively, the front connecting body 111 is formed at the position, corresponding to the front connecting portion 131, of the front positioning hoop 110, the rear connecting body 121 is formed at the position, corresponding to the rear connecting portion 132, of the rear positioning hoop 120, and the front connecting body 111 and the rear connecting body 121 are used for achieving that the pull-back piece 130 and the periphery of the toughened glass piece 210 do not interfere.

In this embodiment, through the arrangement of the front connector 111 and the rear connector 121, the front connector 111 and the rear connector 121 are respectively connected with the front connection portion 131 and the rear connection portion 132 corresponding to the pull-back piece 130, so that the pull-back piece 130 is preferably connected to the corresponding positioning anchor ear, and meanwhile, the damage to the toughened glass piece 210 caused by the extrusion between the pull-back piece 130 and the toughened glass piece 210 of the insulator string is avoided.

In this embodiment, at least 2 pullback members 130 are uniformly distributed along the circumferential direction of the insulator string 100, so that the stress between the front positioning anchor ear 110 and the rear positioning anchor ear 120 is uniform, and the spacing between the front positioning anchor ear 110 and the rear positioning anchor ear 120 is convenient to be adjusted by the pullback members 130.

In this embodiment, the front connector 111 and the front connector 131 are hinged by a front hinge pair.

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

By the configuration in the present embodiment, the hinge connection between the front connecting body 111 and the front connecting portion 131 is preferably achieved.

In this embodiment, the rear connector 121 is hinged to the rear connector 132 by a rear hinge pair.

In this embodiment, the rear hinge pair has a rear hinge block, a rear hinge slot 1212, and a rear hinge shaft, the rear hinge block and the rear hinge slot 1212 forming a hinge fit through the rear hinge shaft; the rear hinge block is of a convex structure and is formed at one of the rear link 121 and the rear link 132, and the rear hinge slot 1212 is of a slot structure and is formed at the other of the rear link 121 and the rear link 132.

By the configuration in the present embodiment, the hinge connection between the rear connecting body 121 and the rear connecting portion 132 is preferably achieved.

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

By adopting the mechanical screw or the hydraulic screw in the embodiment, the operation of operators on line is facilitated, and the distance between the front positioning anchor ear 110 and the rear positioning anchor ear 120 is adjusted.

In this embodiment, the front connector 111 is integrally provided at the circumferential side of the front positioning hoop 110 and extends radially outward of the front positioning hoop 110, preferably forming a front connector.

In this embodiment, the rear connecting body 121 is integrally provided at the circumferential side of the rear positioning anchor 120 and extends outward in the radial direction of the rear positioning anchor 120, preferably forming the rear connecting body.

Example 5

As shown in fig. 6 to 9, the locking mechanism in this embodiment includes two jaw mounting bodies 310 for mutually cooperating, the two jaw mounting bodies 310 are in a non-closed circular shape and assembled to form a positioning anchor ear 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 a sub-jaw mounting body 310b, and the positioning anchor ear body 300 is assembled between the main jaw mounting body 310a and the sub-jaw mounting body 310 b; 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 snap fastener 340.

In this embodiment, through the arrangement of the hinge pair 330, the rotational 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 fastening component 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 anchor ear 110 and the rear positioning anchor ear 120 can be opened or closed through the fastening component 340, and the assembly between the front positioning anchor ear 110 and the rear positioning anchor ear 120 and the corresponding insulator is facilitated.

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

Through the structure in this embodiment, when the locating plate 511 stretches into the locating slot 411, two side surfaces of the locating plate 511 are mutually attached to the corresponding side walls of the locating slot 411, and preferably, when the main claw mounting body 310a is connected with the other end of the main claw mounting body 310a and the other end of the auxiliary claw mounting body 310b, the main claw mounting body is axially located along the locating hoop body 300, and shaking of the connecting part of the clamping piece 340 is preferably avoided, so that the claws 140 mounted on the locating hoop are preferably located on the same plane, and are convenient to be matched with the corresponding steel caps 220.

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

Through the configuration in this embodiment, the first connecting lug 410 is located in the corresponding stepped groove 512, so that when the other end of the main jaw mounting body 310a and the other end of the auxiliary jaw mounting body 310b are connected by the clamping piece 340, the main jaw mounting body 310a and the auxiliary jaw mounting body 310b can be positioned along the axial direction of the positioning anchor ear body 300, and meanwhile, the other side wall of the stepped groove 512 and the end face of the corresponding first connecting lug 410 are mutually limited, so that stress when the clamping piece 340 is connected with the main connecting part and the auxiliary connecting part can be realized, and the installation between the main jaw mounting body 310a and the auxiliary jaw mounting body 310b is facilitated.

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

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

In this embodiment, the auxiliary connection portion has an opening 513 into which the locking screw 611 is rotatably clamped about the locking pin 610, and when the locking screw 611 is clamped into the opening 513, an end portion of the locking screw 611, which is far away from the locking pin 610, extends out of the opening 513, and the nut 612 is screwed onto the end portion of the locking screw 611, which extends out of the opening 513, and abuts against a side surface of the auxiliary connection portion.

In this embodiment, the auxiliary connection portion has an opening 513 into which the locking screw 611 is rotatably clamped about the locking pin 610, and when the locking screw 611 is clamped into the opening 513, an end portion of the locking screw 611, which is far away from the locking pin 610, extends out of the opening 513, and the nut 612 is screwed onto the end portion of the locking screw 611, which extends out of the opening 513, and abuts against a side surface of the auxiliary connection portion.

Through the structure in this embodiment for the retaining member is when using, make it rotate along with locking pin 610 and block into open slot 513 through stirring locking screw 611, make it support and tightly realize the connection between main connecting portion and the vice connecting portion on the side of vice connecting portion through tightening nut 612 this moment, preferably realize the locking of location staple bolt, remove its support and tightly on the side of vice connecting portion through tightening nut 612, stir locking screw 611 makes it rotate out open slot 513 and remove the connection between main connecting portion and the vice connecting portion, preferably realize the opening of location staple bolt, be convenient for its cooperation with steel cap 220 department.

In this embodiment, the end surface of the positioning plate 511 is provided with an arc-shaped limiting groove 514 matching with the outer side wall of the locking pin 610, so that the main connecting portion and the auxiliary connecting portion are preferably positioned along the circumferential direction of the positioning hoop body 300.

In the present embodiment, the hinge pair 330 has a hinge block 520, a hinge groove 421, and a hinge shaft, and the hinge block 520 and the hinge groove 421 form a hinge fit through the hinge shaft; the hinge block 520 is of a convex 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 is of 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.

By the configuration in this embodiment, the hinged connection between the one end of the main jaw mounting body 310a and the one end of the sub jaw mounting body 310b is preferably achieved.

In this embodiment, the hinge block 520 is disposed at the one end of the sub-jaw mounting body 310b, grooves 521 are formed at the one end and both sides of the sub-jaw mounting body 310b, and the sub-jaw mounting body 310b between the grooves 521 is configured as the hinge block 520.

In this embodiment, the hinge groove 421 is provided at the one end of the main jaw mounting body 310a, and two second coupling lugs 420 are oppositely provided at the one end of the main jaw mounting body 310a, and the hinge groove 421 is formed between the two second coupling lugs 420.

Example 6

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

This embodiment is a preferred embodiment having both the jaw pair provided in embodiment 2, the jaw adjustment mechanism provided in embodiment 3, and the locking mechanism provided in embodiment 5.

Example 7

The present embodiment provides an on-line system for transmission line insulator replacement having the locating hoop/clamp and pullback mechanism of embodiment 6.

Example 8

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

s1, turning the nut 611 and turning the locking screw 612 to enable the locking screw to be turned out of the opening groove 513, so that the positioning anchor ear can be opened;

s2, clamping the opened positioning anchor ear into the insulator corresponding to the insulator string, rotating the locking screw 612 to clamp the positioning anchor ear into the opening groove 513, and screwing the nut 611 to lock the positioning anchor ear at the insulator string;

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

s4, the distance between the front positioning anchor ear 110 and the rear positioning anchor ear 120 is reduced through the pull-back piece 130, so that the tension at the position 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 interval between the front positioning anchor ear 110 and the rear positioning anchor ear 120 through the pull-back piece 130;

s6, the front positioning anchor ear 110 and the rear positioning anchor ear 120 assembled on the insulator string 100 are detached by screwing the nut 611 and rotating the locking screw 612 to enable the locking screw to rotate out of the opening groove 513 so that the positioning anchor ear can be opened.

In summary, the foregoing description is only of the preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the invention.

Claims (25)

1. An on-line system for transmission line insulator replacement, characterized in that: the device comprises a front positioning anchor ear (110) and a rear positioning anchor ear (120) which are arranged at different insulators of the same insulator string (100), wherein a pull-back piece (130) for adjusting the interval between the front positioning anchor ear (110) and the rear positioning anchor ear (120) is arranged between the front positioning anchor ear (110) and the rear positioning anchor ear (120);

the front positioning anchor ear (110) and the rear positioning anchor ear (120) comprise claw mounting bodies (310), and claws (140) are arranged at the claw mounting bodies (310) through claw adjusting mechanisms;

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 the 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 fix the rear positioning hoop (110) at the insulator string (100);

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 assembly, wherein the jaw mounting body (310) is in a non-closed annular 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); an adjustment assembly is radially and relatively fixedly engaged with one of the jaw assembly (710) and the jaw mounting (310), the adjustment assembly being radially and adjustably engaged with the other of the jaw assembly (710) and the jaw mounting (310);

the adjusting assembly comprises a screw rod piece (720), a mounting piece arranged at one of the claw assembling part (710) and the claw mounting body (310) and a threaded piece arranged at the other of the claw assembling part (710) and the claw mounting body (310), wherein the mounting piece is used for forming a running fit with the screw rod piece (720), and the threaded piece is used for forming a threaded fit with the screw rod piece (720);

the mounting member includes a first mounting groove (432) formed at one of the jaw fitting portion (710) and the jaw mounting body (310), and the screw member includes a second mounting groove (711) formed at the other of the jaw fitting portion (710) and the jaw mounting body (310); the side walls of the first mounting groove (432) and the second mounting groove (711) together form a circumferential assembly surface for cooperation with the side wall of the screw member (720);

A positioning piece (730) is arranged at one of the claw assembly part (710) and the claw mounting body (310), and the positioning piece (730) is used for realizing the relative fixed fit between the screw piece (720) and the claw assembly part (710) or between the screw piece (720) and the claw mounting body (310) in the radial direction;

the positioning piece (730) comprises a positioning block (810) detachably arranged at the jaw mounting body (310), and a positioning block assembly hole (433) matched with the positioning block (810) is formed between the corresponding end surface of the jaw mounting body (310) and the side wall of the first mounting groove (432).

2. An in-line system for transmission line insulator replacement according to claim 1, wherein: the front positioning anchor ear (110) and the rear positioning anchor ear (120) comprise two positioning anchor ear bodies (300) which are in a non-closed circular shape and are matched with each other in an assembling mode, one of the two anchor ear bodies (310) is a main anchor ear mounting body (310 a), the other of the two anchor ear mounting bodies (310) is a secondary anchor ear mounting body (310 b), one end of the main anchor ear mounting body (310 a) is hinged to the corresponding end of the secondary anchor ear mounting body (310 b) through a hinge pair (330), and the other end of the main anchor ear mounting body (310 a) is detachably connected with the corresponding other end of the secondary anchor ear mounting body (310 b) through a clamping piece (340).

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

4. An in-line system for transmission line insulator replacement according to claim 3, wherein: the main connecting portion comprises two oppositely arranged first connecting lugs (410), a positioning groove (411) is formed between the two first connecting lugs (410), the auxiliary connecting portion is provided with a stepped groove (512) for the corresponding first connecting lugs (410) to extend in, 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. An in-line system for transmission line insulator replacement as claimed in claim 4, wherein: the locking piece comprises a locking pin shaft (610) which is rotatably arranged between two first connecting lugs (410) and axially parallel to the positioning hoop body (300), a locking screw rod (611) which is axially perpendicular to the locking pin shaft (610) is arranged on the locking pin shaft (610), and a nut (612) for propping the other side wall of the stepped groove (512) against the end face of the corresponding first connecting lug (410) is arranged on the locking screw rod (611) in a threaded manner.

6. An in-line system for transmission line insulator replacement as claimed in claim 5, wherein: the auxiliary connection part is provided with an opening groove (513) for the locking screw (611) to be clamped in a rotating way around the locking pin shaft (610), the end part, far away from the locking pin shaft (610), of the locking screw (611) stretches out of the opening groove (513) when the locking screw (611) is clamped in the opening groove (513), and the nut (612) is in threaded connection with the end part, stretching out of the opening groove (513) of the locking screw (611) and abuts against the side surface of the auxiliary connection part.

7. An in-line system for transmission line insulator replacement as claimed in claim 5, wherein: the end face of the positioning plate (511) is provided with an arc-shaped limit groove (514) matched with the outer side wall of the locking pin shaft (610).

8. An in-line system for transmission line insulator replacement according to claim 2, wherein: 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) is of a convex structure and 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) is of a groove structure and 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 in-line system for transmission line insulator replacement according to claim 1, wherein:

the positioning member (730) includes a projection structure configured to project inward from the first mounting groove (432), the projection structure being in radially relatively fixed engagement with the first mounting groove (432), a groove structure which contracts inward being formed at a corresponding side wall of the screw member (720), the groove structure and the projection structure forming interference in a radial direction of the screw member (720).

10. An in-line system for transmission line insulator replacement according to claim 9, wherein: 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.

11. An in-line system for transmission line insulator replacement according to claim 10, wherein: the positioning block mounting structure comprises a positioning block mounting plate (811) protruding out of the positioning block (810) towards the periphery, a mounting plate assembly groove (434) used for being 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 assembly groove (434) through a connecting piece.

12. An in-line system for transmission line insulator replacement according to claim 10, wherein: the groove structure comprises 2 annular clamping grooves (911) which are arranged at intervals, annular parts (912) are formed among the 2 annular clamping grooves (911), and matched positioning clamping grooves (821) are formed at the positions of the protruding structures corresponding to the annular parts (912).

13. An in-line system for transmission line insulator replacement according to claim 12, wherein: the convex structure is provided with a matched positioning clamping ring (831) corresponding to any annular clamping groove (911).

14. An in-line system for transmission line insulator replacement according to claim 1, wherein: the both ends of back piece (130) form respectively and are used for with preceding location staple bolt (110) and back location staple bolt (120) complex preceding connecting portion (131) and back connecting portion (132), preceding location staple bolt (110) correspond preceding connecting portion (131) department and form preceding connector (111), back location staple bolt (120) correspond back connecting portion (132) department and form back connector (121), the structure of preceding connector (111) and back connector (121) is used for realizing back piece (130) and toughened glass piece (210) periphery and does not form the interference.

15. An in-line system for transmission line insulator replacement according to claim 14, wherein: the pullback members (120) are uniformly distributed with at least 2 pieces along the circumference of the insulator string (100).

16. An in-line system for transmission line insulator replacement according to claim 14, wherein: the front connector (111) is hinged with the front connecting part (131) through a front hinge pair.

17. An in-line system for transmission line insulator replacement according to claim 14, wherein: the rear connector (121) is hinged with the rear connecting part (132) through a rear hinge pair.

18. An in-line system for transmission line insulator replacement according to claim 14, wherein: the pullback member (130) is a mechanical screw or a hydraulic screw.

19. An in-line system for transmission line insulator replacement according to claim 1, wherein: the front claw (140 a) has a front claw body part (1010) and a front claw clamping part (1020), and the rear claw (140 b) has a rear claw body part (1110) and a rear claw clamping part (1120);

the front claw body part (1010) and the rear claw body part (1110) are used for realizing the interval assembly of the front claw (140 a) and the rear claw (140 b), the front claw bayonet 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 bayonet 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).

20. An in-line system for transmission line insulator replacement according to claim 19, wherein: the front claw body part (1010) is provided with a front claw body end which is used for being matched with the corresponding steel cap (220) and a front claw body other end which is far away from the corresponding steel cap (220), the front claw body part (1010) is also provided with a front claw body upper plane (1011) which is used for assembly and a front claw body lower inclined plane (1012) which is arranged opposite to the upper plane, and the upper plane and the lower inclined plane are configured to gradually increase the thickness of the front claw body part (1010) from the front claw body other end to the front claw body one end.

21. An in-line system for transmission line insulator replacement according to claim 20, wherein: a front claw bayonet part (1020) is formed at one end of the front claw main body part, and the front claw bayonet 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 curved in an arc shape.

22. An in-line system for transmission line insulator replacement according to claim 21, wherein: the first mating surface (1021) has the same width as the thickness of the front jaw body portion (1010) at one end of the front jaw body.

23. An in-line system for transmission line insulator replacement according to claim 22, wherein: the rear claw body portion (1110) has a rear claw body end for mating with the corresponding steel cap (220) and a rear claw body end remote from the corresponding steel cap (220), the rear claw body portion (1110) further has a rear claw body upper plane (1111) for assembly and a rear claw body lower inclined plane (1112) disposed opposite the upper plane, the upper plane and the lower inclined plane being configured therebetween such that the thickness of the rear claw body portion (1110) gradually increases from the rear claw body other end to the rear claw body one end.

24. An in-line system for transmission line insulator replacement according to claim 19, wherein: a rear claw bayonet part (1120) is formed at one end of the rear claw body, and the rear claw bayonet part (1120) is provided with a second matching surface (1121) which is used for being matched with the side wall of the corresponding steel cap (220) between the steel cap flange (221) and the toughened glass piece (210) and is curved in an arc shape.

25. An in-line system for transmission line insulator replacement according to claim 23, wherein: the side surface of the rear claw bayonet part (1120) near 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 jaw bayonet portion (1120) further has a rear jaw bayonet lower plane surface opposing the third mating surface (1122), and the rear jaw bayonet lower plane surface and the third mating surface (1122) are configured such that the thickness of the rear jaw bayonet portion (1120) gradually decreases in a direction away from the rear jaw main body portion (1110).