CN217589986U - Jack catch pair and replacement device for insulator of power transmission line - Google Patents

Abstract

The utility model relates to the technical field of power equipment, in particular to a jaw pair and a replacing device for an insulator of a power transmission line, which comprises a front jaw and a rear jaw which are arranged at intervals, wherein the front jaw and the rear jaw are matched with different insulators at the same suspension insulator chain in a matching way; the front claw is provided with a front claw main body part and a front claw clamping opening part, and the rear claw is provided with a rear claw main body part and a rear claw clamping opening part; 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 being matched with a corresponding iron cap from the side of a ceramic sheet far away from the iron cap flange, and the rear claw clamping opening part is used for being matched with a corresponding iron cap from the side of a ceramic sheet near the iron 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 iron cap, so that the front positioning hoop and the rear positioning hoop are tightly held on the suspension insulator string, and the problem that the positioning hoop is not conveniently held on the suspension insulator string due to tight connection between insulators is preferably solved.

Description

Jack catch pair and replacement device for insulator of power transmission line

Technical Field

The utility model relates to a power equipment technical field, specifically speaking relates to a jack catch is vice and be used for transmission line insulator's change device.

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 insulators in the string and replacement of the faulty insulators are required. Because the insulator string is assembled on the high-altitude power transmission tower, the difficulty in replacing the insulator with a problem is huge. At present, the insulators on two sides of the insulator to be replaced are clamped by two clamping devices, the insulators are replaced by adjusting the distance between the two clamping devices, but the clamping positions of the clamping devices on the insulator strings are very limited due to the fact that all insulators between the insulator strings are connected tightly, and the insulators are inconvenient to replace by the clamping devices.

SUMMERY OF THE UTILITY MODEL

To the fixture defect of holding tightly inconvenient on insulator chain that exists among the prior art, the utility model provides a vice change device that is used for transmission line insulator of jack catch.

In order to solve the above technical problem, the present invention solves the above technical problems.

The clamping jaw pair comprises a front jaw and a rear jaw which are arranged at intervals, and the front jaw and the rear jaw are used for being matched with different insulators on the same insulator string in a matched manner;

the front claw is provided with a front claw main body part and a front claw clamping opening part, and the rear claw is provided with a rear claw main body part and a rear claw clamping opening part;

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 ensured to be 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 claw main body part is provided with one end of the rear claw main body matched with the corresponding steel cap and the other end of the rear claw main body far away from the corresponding steel cap, the rear claw main body part is further provided with an upper plane of the rear claw main body for assembling and a lower inclined plane of the rear 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 rear claw main body part to gradually increase from the other end of the rear claw main body to one end of the rear claw main body.

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 rear claw clamping opening part, 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 is 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.

Preferably, the front-claw body part has a front-claw assembling part formed at an upper plane of the front-claw body, and the front-claw assembling part is used for realizing movable assembling of the front claw, preferably assembling of the front claw.

Preferably, the rear-jaw body has a rear-jaw mounting portion formed at an upper plane of said rear-jaw body for enabling movable mounting of the rear jaw, preferably mounting of the rear jaw.

The invention also provides a replacing device for the insulator of the power transmission line, which comprises an equipment main body, wherein at least one jaw pair is arranged at the equipment main body.

Through the structure of the invention, the clamping jaw pair is used for clamping the replacing device for the insulator of the power transmission line on the insulator string, so that the replacing device is convenient to use on the line.

Drawings

Fig. 1 is a schematic diagram 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 diagram of a screw member according to an embodiment;

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

FIG. 14 is a schematic view showing the structure of a rear claw 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 present invention, reference will 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 only and are not limiting.

Example 1

In order to achieve the purpose of replacing any insulator in an insulator string that has been put into use, the present embodiment provides a replacing device for an insulator of a power transmission line, 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 excessive positions for holding are available, the positioning hoop in the embodiment can be matched with the corresponding insulator well by structures such as clamping jaws; 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, but not limiting, of the solution of the present invention; 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.

For the purpose of adjusting the distance between the front positioning hoop 110 and the rear positioning hoop 120, the structure of the pull-back mechanism in this embodiment can be 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 only and not limiting; in fact, the pullback mechanism can 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 for cooperatively cooperating with different insulators at the same insulator string 100;

the front jaw 140a has a front jaw body 1010 and a front jaw part 1020, and the rear jaw 140b has a rear jaw body 1110 and a rear jaw part 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 not tightly held on the insulator string due to tight connection between insulators is preferably solved.

In this embodiment, the front-claw main body 1010 has one end of the front-claw main body for fitting with the corresponding steel cap 220 and the other end of the front-claw main body far from the corresponding steel cap 220, the front-claw main body 1010 further has an upper plane 1011 of the front-claw main body for fitting and a lower inclined plane 1012 of the front-claw 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-claw main body 1010 gradually increases from the other end of the front-claw main body to the one end of the front-claw 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.

By the structure of the embodiment, the first fitting surface 1021 is fitted with the side wall of the steel cap 220 on the side of the tempered glass 210 of the steel cap flange 221, so as to preferably realize the clasping of the front positioning hoop at the steel cap 220 by the front claw 140a, and at the same time, by the fit between the front claw bayonet part 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 mating surface 1021 is the same as the thickness of the front jaw main body 1010 at one end of the front jaw main body, which preferably ensures the strength of the front jaw clamping opening 1020 to facilitate the mating 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, and the rear-jaw body 1110 further has an upper plane 1111 of the rear-jaw body for assembly 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 in the embodiment, the thickness of the rear claw 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 claw body 1110 increases as the rear claw body 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 engagement of the rear claw 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 being fitted with a side wall of the corresponding steel cap 220 between the steel cap flange 221 and the tempered glass piece 210.

With the structure of the present embodiment, the second engagement surface 1121 is attached to the side wall of the steel cap 220 between the steel cap flange 221 and the tempered glass element 210, so as to preferably ensure the engagement between the rear claw locking 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, so that the rear claw clamping opening portion 1120 can be clamped between the steel cap flange 221 and the tempered glass piece 210, and the rear positioning hoop can be clamped 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 that the stress of the rear claw 140b is ensured, and 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 are facilitated.

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 of the present embodiment, the fitting of the front claws 140a to the front positioning hoop 110 is preferably realized.

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 the present 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 mounting bodies 310, the jaw assembling groove 431 is radially disposed along the jaw mounting 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 assembly grooves 431 through the jaw assembly portions 710, and through the arrangement of the jaw adjusting mechanisms, when an operator actually operates the insulator replacing device, the jaws 140 can be adjusted to move along the jaw assembly grooves 431 through the jaw adjusting mechanisms, so that 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 insulator replacing device for the insulator strings 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 thereof 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.

By 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 achieved.

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 detachment and installation 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 an inner end of the positioning block 810, and an 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 engaged 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 by a connecting member, and the positioning member 730 is preferably attached to and detached from 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 convex structure is provided with a positioning clamp ring 831 corresponding to any one of the annular clamp grooves 911.

By the construction in this embodiment, it is preferably realized that the screw member 720 is rotatably mounted at one of them.

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 better positioned and fitted.

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 for adjusting a 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 disposed so that the front connector 111 and the rear connector 121 are respectively connected to the front connecting portion 131 and the rear connecting portion 132 corresponding to the pull-back member 130, so as to preferably connect the pull-back member 130 to the corresponding positioning hoop, and prevent the damage to the tempered glass member 210 caused by the extrusion between the pull-back member 130 and the insulator string tempered glass member 210.

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 this 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 screw or a hydraulic screw.

By adopting the mechanical lead screw or the hydraulic lead screw in the embodiment, the operator can conveniently operate on line, 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 claw mounting bodies 310 for being mutually matched, the two claw mounting bodies 310 are in a non-closed circular shape and are assembled to form the positioning hoop body 300, one of the two claw mounting bodies 310 is a main claw mounting body 310a, the other of the two claw mounting bodies 310 is an auxiliary claw mounting body 310b, and the positioning hoop body 300 is assembled between the main claw mounting body 310a and the auxiliary claw 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 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 fastener 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 sidewall 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 away 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 on 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 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 nut 612 is screwed to release the abutting to the side surface of the auxiliary connecting part, the locking screw 611 is shifted to be rotated out of the open slot 513 to remove 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 positioning hoop 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 achieve the hinge connection between the one end of the main jaw mounting body 310a and the one end of the sub jaw 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 one end of the main jaw mounting body 310a, two second engaging lugs 420 are oppositely disposed at the one 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 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 a locking screw 612 to clamp the positioning hoop into an open slot 513, and screwing a 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;

and S6, the positioning hoop can be opened by screwing the nut 611 and rotating the locking screw 612 to enable the nut to rotate out of the open groove 513, and the front positioning hoop 110 and the rear positioning hoop 120 assembled on the insulator string 100 are disassembled.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims (10)

1. The jack catch is vice, its characterized in that: the insulator chain insulator comprises a front claw (140 a) and a rear claw (140 b) which are arranged at intervals, wherein the front claw (140 a) and the rear claw (140 b) are used for being matched with different insulators on the same insulator chain (100) in a matching manner;

the front claw (140 a) has a front claw body (1010) and a front claw jaw (1020), and the rear claw (140 b) has a rear claw body (1110) and a rear claw jaw (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).

2. The jaw pair of claim 1, 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 a front claw main body upper plane (1011) used for assembling and a front claw main body lower inclined plane (1012) 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 between the upper plane and the lower inclined plane.

3. The jaw pair of claim 2, 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.

4. The jaw pair of claim 2, 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.

5. The jaw pair of claim 1, 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.

6. The jaw pair of claim 5, 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.

7. The jaw pair of claim 6, 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).

8. The jaw pair of claim 2, wherein: the front claw body part (1010) is provided with a front claw assembly part (710 a) formed at the upper plane (1011) of the front claw body, and the front claw assembly part (710 a) is used for realizing movable assembly of the front claw (140 a).

9. The jaw pair of claim 5, wherein: the rear claw main body part (1110) is provided with a rear claw assembly part (710 b) formed at an upper plane (1111) of the rear claw main body, and the rear claw assembly part (710 b) is used for realizing movable assembly of the rear claw (140 b).

10. A change device for transmission line insulator, its characterized in that: comprising a device body at which at least one jaw pair according to any one of claims 1-9 is arranged.

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