CN220381878U - Opening and closing device of pincerlike current transformer - Google Patents

Abstract

The application provides a pincerlike current transformer's device that opens and shuts, include: a control mechanism and a clamping assembly; the control mechanism comprises an insulating outer rod, an insulating handle is arranged on the insulating outer rod, a clamping assembly is arranged at one end of the insulating outer rod along the first axis direction, and the clamping assembly is connected with the insulating handle through a transmission assembly; the clamping assembly comprises a fixing plate and a rotating plate, the fixing plate is arranged at the end part of the insulation outer rod, the rotating plate is rotationally connected with the insulation outer rod, the connecting part of the rotating plate is hinged with the transmission assembly, the clamping part of the rotating plate is arranged at one side of the insulation outer rod, and the clamping part and the fixing plate are used for fixing a handle of the pincerlike current transformer; the insulating handle controls the clamping assembly to switch from the first state to the second state; the problem that personnel mounting pincerlike current transformers cannot be implemented in place due to large occupied space and small overhauling space of cables in the cable well is solved through the structure, manpower and material resources are saved, disassembly is convenient, and smooth detection of cable paths is guaranteed.

Description

Opening and closing device of pincerlike current transformer

Technical Field

The present disclosure relates generally to the field of cable path detection technology, and in particular, to an opening and closing device for a pincer-shaped current transformer.

Background

In the construction process of road surface widening engineering or various pipeline engineering caused by urban construction, the path of a cable is often required to be detected in advance, so that the cable is prevented from being damaged in the construction process, and a power supply line is prevented from tripping or grounding, thereby causing a large-area power utilization district and a power utilization unit power failure event nearby a construction site.

In the prior art, a cable path detector is generally used for path detection, the cable path detector consists of a current transformer and a receiver, for example, a rotary clamp-shaped current transformer disclosed in CN205177592U, one end of a handle of the clamp-shaped current transformer is fixed, the other end of the handle moves to realize opening and closing of the clamp-shaped current transformer, so that the clamp-shaped current transformer is clamped on a cable, and an audio signal sent by the clamp-shaped current transformer is received by the receiver to determine the underground position of the cable; because the business turn over line cable of partial transformer substation, looped netowrk cabinet, cable junction box is more, and some cable well (like looped netowrk cabinet, cable junction box) place the cable of maintenance surplus more for cable well cable put compactly, overhaul the space little and cause personnel to be difficult to get into behind the cable well with pincerlike current transformer card on the cable being surveyed, lead to unable detection to the cable.

Disclosure of Invention

In view of the foregoing drawbacks or shortcomings of the prior art, it is desirable to provide an opening and closing device for a pincer-shaped current transformer that solves the foregoing technical problems.

The application provides a pincerlike current transformer's device that opens and shuts, include: a control mechanism and a clamping assembly;

the control mechanism includes: the insulation outer rod is hollow, the insulation handle is arranged on the insulation outer rod, the clamping assembly is arranged at one end of the insulation outer rod along the first axis direction, and the clamping assembly is connected with the insulation handle through the transmission assembly; the clamping assembly has a first state and a second state, and the insulating handle is used for controlling the clamping assembly to be switched from the first state to the second state;

the clamping assembly includes: the fixed plate is fixedly arranged at the end part of the insulation outer rod, the rotating plate is rotationally connected with the insulation outer rod, the rotating plate comprises a clamping part and a connecting part, and the connecting part is hinged with the transmission assembly; the clamping part is arranged at one side of the insulating outer rod; the clamping part and the fixing plate are used for fixing a handle of the pincer-shaped current transformer;

when the clamping assembly is in a first state, the clamping part and the fixing plate drive the handles of the clamp-shaped current transformers to be opened, so that the clamp-shaped current transformers are closed; when the clamping assembly is in a second state, the clamping part and the fixing plate drive the handles of the clamp-shaped current transformers to be closed, so that the clamp-shaped current transformers are opened.

According to the technical scheme that this application embodiment provided, be provided with fixed subassembly on the clamping part, fixed subassembly includes roll screw rod and nut, fixed subassembly is used for fixing the handle of pincerlike current transformer.

According to the technical scheme provided by the embodiment of the application, the transmission assembly comprises:

the insulation pull rod is arranged in the insulation outer rod along the first axis direction, one end of the insulation pull rod is hinged with the insulation handle, and the other end of the insulation pull rod is hinged with the connecting part;

the elastic component is sleeved on the insulating pull rod along the first axis direction and is used for assisting the clamping component to switch states.

According to the technical scheme provided by the embodiment of the application, the elastic component comprises a spring sleeved on the insulation pull rod, one end of the spring, which is close to the insulation handle, is fixedly connected with a limiting plate, the limiting plate is sleeved on the insulation pull rod, and the limiting plate is fixedly connected with the insulation outer rod; the other end of the spring is fixedly connected with a limiting pipe, the limiting pipe is sleeved on the insulating pull rod, and the limiting pipe is fixedly connected with the insulating pull rod.

According to the technical scheme that this application embodiment provided, insulating pull rod with be provided with the diagonal draw bar between the connecting portion, insulating outer pole is kept away from one side of clamping part is provided with first opening, the one end of diagonal draw bar with insulating pull rod articulates, the other end of diagonal draw bar passes first opening with the connecting portion articulates.

According to the technical scheme provided by the embodiment of the application, the control mechanism further comprises an insulation clamp, and the insulation clamp is fixedly arranged on the insulation outer rod; the middle part of the insulating handle is positioned in the insulating outer rod, both ends of the insulating handle are positioned outside the insulating outer rod, one end of the insulating handle is hinged with the insulating clamp, and the other end of the insulating handle is a manual operation handle; the insulating outer rod is provided with symmetrical rectangular holes corresponding to the positions where the insulating handles penetrate, and the length direction of each rectangular hole is parallel to the first axis direction.

According to the technical scheme provided by the embodiment of the application, the insulating pipe clamp is arranged between the fixed plate and the insulating outer rod.

According to the technical scheme that this application embodiment provided, insulating outer pole is kept away from clamping component's one end is provided with external portion, external portion is used for two control mechanism connects, and two connect through synchronous subassembly transmission between the control mechanism, synchronous subassembly sets up keeping away from on clamping component's the control mechanism.

According to the technical scheme provided by the embodiment of the application, the synchronous assembly comprises: a fixed pulley, a movable pulley and a steel wire; the fixed pulley is rotatably mounted on the inner wall of the insulating outer rod, the movable pulley is rotatably mounted at one end of the insulating pull rod, which is far away from the insulating handle, one end of the steel wire is fixedly wound on the movable pulley, and the other end of the steel wire bypasses the fixed pulley to be connected with the insulating handle, which is close to the control mechanism of the clamping assembly.

The beneficial effects of this application lie in:

based on the technical scheme that this application provided, include: a control mechanism and a clamping assembly; the control mechanism comprises an insulating outer rod, an insulating handle is arranged on the insulating outer rod, a clamping assembly is arranged at one end of the insulating outer rod along the first axis direction, and the clamping assembly is connected with the insulating handle through a transmission assembly; the clamping assembly comprises a fixing plate and a rotating plate, the fixing plate is arranged at the end part of the insulation outer rod, the rotating plate is rotationally connected with the insulation outer rod, the rotating plate comprises a clamping part and a connecting part, the connecting part is hinged with the transmission assembly, the clamping part is arranged at one side of the insulation outer rod, and the clamping part and the fixing plate are used for fixing a handle of the clamp-on current transformer; the clamping assembly has a first state and a second state, and the insulating handle is used for controlling the clamping assembly to be switched from the first state to the second state;

when the cable path is detected, the handle of the clamp-shaped current transformer is fixed between the clamping part and the fixing plate, after the fixation is completed, the insulation outer rod prolongs the moving distance of the clamp-shaped current transformer, so that the clamp-shaped current transformer can be sent to the position of a detected cable when standing near the ground right below a cable well mouth, the clamping assembly is controlled to be switched from a first state to a second state through the insulation handle, the clamping part moves towards the direction close to the fixing plate under the action of the insulation handle and the transmission assembly, the handle of the clamp-shaped current transformer is further driven to be closed, the clamp-shaped current transformer is opened, the opened clamp-shaped current transformer is aligned to the detected cable, then the insulation handle is released, the clamping assembly is switched from the second state to the first state, the clamping part moves towards the direction far away from the fixing plate under the action of the insulation handle and the transmission assembly, and the handle of the clamp-shaped current transformer is further driven to be opened, and the clamp-shaped current transformer is enabled to be closed and the detected cable is clamped on the detected cable, and the cable path is detected; after detection is completed, the clamp-shaped current transformer is opened and taken down through the insulating handle; the problem that personnel mounting pincerlike current transformers cannot be implemented in place due to the fact that the occupied space of cables in a cable well is too large and the overhauling space is small is solved through the structure, convenience is brought to maintenance personnel to finish the mounting work of the pincerlike current transformers, convenience is brought to dismounting when manpower and material resources are saved, and smooth performance of cable path detection is guaranteed.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

fig. 1 is a schematic view of an opening and closing device of a pincer-shaped current transformer in a first state;

fig. 2 is a schematic view of an opening and closing device of a pincer-shaped current transformer in a second state;

FIG. 3 is a schematic diagram of a pincer-shaped current transformer of the present application with a switching device for the pincer-shaped current transformer;

FIG. 4 is a schematic view of an insulated handle of the present application;

fig. 5 is a top view of an insulating clip of the present application;

FIG. 6 is a side view of an insulated outer rod of the present application;

FIG. 7 is a schematic view of a securing assembly of the present application;

FIG. 8 is a top view of a spacing tube of the present application;

FIG. 9 is a top view of the limiting plate of the present application;

FIG. 10 is a schematic view of a rotating plate of the present application;

fig. 11 is an elongated schematic view of an opening and closing device of a pincer-shaped current transformer in the present application.

In the figure: 1. an insulating outer rod; 2. an insulating handle; 21. a manual operation handle; 31. a fixing plate; 32. a rotating plate; 321. a clamping part; 322. a connection part; 4. a fixing assembly; 41. rolling bolts; 42. a screw cap; 5. an insulating pull rod; 6. a spring; 7. a limiting plate; 8. a limiting tube; 9. a diagonal draw bar; 10. an insulating clamp; 11. an insulating pipe clamp; 12. an external connection part; 13. a fixed pulley; 14. a movable pulley; 15. a steel wire; 17. a chute; 18. a pincer-shaped current transformer; 111. a first opening; 112. a second opening; 113. rectangular holes.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the part related to the utility model is shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1-2, a schematic diagram of an opening and closing device of a pincer-shaped current transformer provided in the present application includes: a control mechanism and a clamping assembly;

the control mechanism includes: the insulation handle comprises an insulation outer rod 1, an insulation handle 2 and a transmission assembly, wherein the insulation outer rod 1 is hollow, the insulation handle 2 is arranged on the insulation outer rod 1, the clamping assembly is arranged at one end of the insulation outer rod 1 along the first axis direction, and the clamping assembly is connected with the insulation handle 2 through the transmission assembly; the clamping assembly has a first state and a second state, and the insulating handle 2 is used for controlling the clamping assembly to be switched from the first state to the second state;

the clamping assembly includes: the fixing plate 31 and the rotating plate 32, the fixing plate 31 is fixedly arranged at the end part of the insulation outer rod 1, the rotating plate 32 is rotationally connected with the insulation outer rod 1, the rotating plate 32 comprises a clamping part 321 and a connecting part 322, and the connecting part 322 is hinged with the transmission assembly; the clamping part 321 is arranged at one side of the insulating outer rod 1; the clamping part 321 and the fixing plate 31 are used for fixing the handle of the clamp-shaped current transformer 18;

when the clamping assembly is in the first state, the clamping portion 321 and the fixing plate 31 drive the handle of the clamp-shaped current transformer 18 to open, so that the clamp-shaped current transformer 18 is closed; when the clamping assembly is in the second state, the clamping portion 321 and the fixing plate 31 drive the handle of the clamp-on current transformer 18 to be closed, so that the clamp-on current transformer 18 is opened.

Specifically, the first axis direction is a vertical direction;

working principle: when the cable path is detected, as shown in fig. 3, the handle of the clamp-shaped current transformer 18 is fixed between the clamping part 321 and the fixing plate 31, after the fixation is completed, the clamp-shaped current transformer 18 is opened due to the fact that the insulating outer rod 1 extends the moving distance of the clamp-shaped current transformer 18, so that the clamp-shaped current transformer can be sent to a cable to be detected when standing near the ground right below a wellhead of a cable well, the clamping assembly is controlled to be switched from a first state to a second state by the insulating handle 2, as shown in fig. 2, the clamping part 321 moves to a direction approaching to the fixing plate 31 under the action of the insulating handle 2 and the transmission assembly, the clamp-shaped current transformer 18 is further driven to be closed, the clamp-shaped current transformer 18 is opened, the opened clamp-shaped current transformer 18 is aligned to the cable to be detected, and then the insulating handle 2 is released, the clamping assembly is switched from the second state to the first state, the clamping part 321 is controlled to be moved to a direction far away from the fixing plate 31 under the action of the insulating handle 2 and the transmission assembly, and the clamp-shaped current transformer 18 is further driven to be opened, and the cable to be detected, and the cable to be subjected to the cable path is closed; after the detection is finished, the clamp-shaped current transformer is opened and taken down through the insulating handle 2; the problem that personnel mounting pincerlike current transformers cannot be implemented in place due to the fact that the occupied space of cables in a cable well is too large and the overhauling space is small is solved through the structure, convenience is brought to maintenance personnel to finish the mounting work of the pincerlike current transformers, convenience is brought to dismounting when manpower and material resources are saved, and smooth performance of cable path detection is guaranteed.

In some embodiments, the clamping portion 321 is provided with a chute 17, and a fixing assembly 4 is disposed in the chute 17, where the fixing assembly 4 includes a rolling bolt 41 and a nut 42, and the fixing assembly 4 is used to fix the handle of the pincer-shaped current transformer 18.

Specifically, as shown in fig. 3 and 10, the clamping portion 321 is provided with a chute 17, the fixing assembly 4 is disposed in the chute 17, and as shown in fig. 7, the fixing assembly 4 includes a rolling screw disposed in the chute 17 and a nut 42 matched with the rolling screw 41; as shown in fig. 3, the movable handle of the clamp-on current transformer 18 is provided with a mounting hole, when the clamp-on current transformer 18 is mounted, the nut 42 is removed, the handle of the clamp-on current transformer 18 is placed between the fixing plate 31 and the clamping portion 321, the rolling bolt 41 is passed through the mounting hole, and then the nut 42 is tightened, at this time, the clamp-on current transformer is mounted.

In certain embodiments, the transmission assembly comprises:

an insulation pull rod 5, wherein the insulation pull rod 5 is arranged in the insulation outer rod 1 along a first axis direction, one end of the insulation pull rod 5 is hinged with the insulation handle 2, and the other end of the insulation pull rod 5 is hinged with the connecting part 322;

the elastic component is sleeved on the insulating pull rod 5 along the first axis direction and is used for assisting the clamping component to switch states.

Specifically, when the clamp-on current transformer 18 needs to be opened, the insulating handle 2 is gripped, the insulating handle 2 drives the insulating pull rod 5 to move downwards, and the elastic component moves downwards along with the insulating pull rod 5, so as to drive the clamping portion 321 of the rotating plate 32 to move towards the direction close to the fixed plate 31, so that the clamp-on current transformer 18 is opened;

when the clamp-on current transformer 18 is clamped on the cable, the insulating handle 2 is loosened, the elastic component is reset, the insulating pull rod 2 moves upwards, and the clamping portion 321 of the rotating plate 32 is driven to move in a direction away from the fixed plate 31, so that the clamp-on current transformer 18 is closed.

In some embodiments, the elastic component comprises a spring 6 sleeved on the insulation pull rod 5, one end of the spring 6 close to the insulation handle 2 is fixedly connected with a limiting plate 7, the limiting plate 7 is sleeved on the insulation pull rod 5, and the limiting plate 7 is fixedly connected with the insulation outer rod 1; the other end of the spring 6 is fixedly connected with a limiting pipe 8, the limiting pipe 8 is sleeved on the insulating pull rod 5, and the limiting pipe 8 is fixedly connected with the insulating pull rod 5.

Specifically, the spring 6 is sleeved on the insulation pull rod 5, one end of the spring 6, which is close to the insulation handle 2, is fixedly connected with a limiting plate 7, as shown in fig. 9, the limiting plate 7 is sleeved on the insulation pull rod 5, and the limiting plate 7 is fixedly connected with the insulation outer rod 1 through a screw; the other end of the spring 6 is fixedly connected with a limiting pipe 8, as shown in fig. 8, the limiting pipe 8 is sleeved on the insulating pull rod 5, and the limiting pipe 8 is fixedly connected with the insulating pull rod 5 through a screw;

when the clamp-on current transformer 18 needs to be opened, the insulating handle 2 is held tightly, the insulating handle 2 drives the insulating pull rod 5 to move downwards, the limiting tube 8 moves downwards along with the insulating pull rod 5, the spring 6 is driven to be compressed, and then the clamping part 321 of the rotating plate 32 is driven to move towards the direction close to the fixed plate 31, so that the clamp-on current transformer 18 is opened;

when the clamp-on current transformer 18 is clamped on the cable, the insulating handle 2 is loosened, the spring 6 is reset, and the insulating pull rod 5 moves upwards along with the limiting pipe 8, so that the clamping part 321 of the rotating plate 32 is driven to move in a direction away from the fixed plate 31, and the clamp-on current transformer 18 is closed.

In some embodiments, a diagonal draw bar 9 is disposed between the insulating draw bar 5 and the connecting portion 322, a first opening 111 is disposed on a side of the insulating outer rod 1 away from the clamping portion 321, one end of the diagonal draw bar 9 is hinged to the insulating draw bar 5, and the other end of the diagonal draw bar 9 passes through the first opening 111 and is hinged to the connecting portion 322.

Specifically, as shown in fig. 6, the two sides of the insulating outer rod 1 are provided with second openings 112, the clamping portion 321 of the rotating plate 32 is disposed on one side of the insulating outer rod 1, and the connecting portion 322 is disposed on the other side of the insulating outer rod 1 through the second openings 112; a diagonal draw bar 9 is arranged between the insulating draw bar 5 and the connecting part 322, a first opening 111 is arranged on one side of the insulating outer rod 1, which is far away from the clamping part 321, the first opening 111 is arranged below the second opening 112, one end of the diagonal draw bar 9 is hinged with the insulating draw bar 5, and the other end of the diagonal draw bar 9 passes through the first opening 111 and is hinged with the connecting part 322;

when the clamp-shaped current transformer 18 needs to be opened, the insulating handle 2 is held tightly, the insulating handle 2 drives the insulating pull rod 5 to move downwards, the limiting pipe 8 moves downwards along with the insulating pull rod 5, the spring 6 is driven to be compressed, and the diagonal pull rod 9 is driven to drive the clamping part 321 to move towards the direction close to the fixed plate 31, so that the clamp-shaped current transformer 18 is opened;

when the clamp-on current transformer 18 is clamped on the cable, the insulating handle 2 is loosened, the spring 6 is reset, the insulating pull rod 5 moves upwards along with the limiting pipe 8, and then the diagonal pull rod 9 is driven to drive the clamping part 321 to move in a direction away from the fixing plate 31, so that the clamp-on current transformer 18 is closed.

In certain embodiments, the control mechanism further comprises an insulating collar 10, wherein the insulating collar 10 is fixedly arranged on the insulating outer rod 1; the middle part of the insulating handle 2 is positioned in the insulating outer rod 1, both ends of the insulating handle 2 are positioned outside the insulating outer rod 1, one end of the insulating handle 2 is hinged with the insulating clamp 10, and the other end of the insulating handle 2 is provided with a manual operation handle 21; the insulating outer rod 1 is provided with symmetrical rectangular holes 113 corresponding to the positions where the insulating handles 2 penetrate, and the length direction of the rectangular holes 113 is parallel to the first axis direction.

Specifically, the control mechanism further includes an insulation clamp 10, the insulation clamp 10 is shown in fig. 5, the insulation clamp 10 is fixedly sleeved on the insulation outer rod 1, the middle part of the insulation handle 2 is located inside the insulation outer rod 1, both ends of the insulation handle 2 are located outside the insulation outer rod 1, one end of the insulation handle 2 is hinged with the insulation clamp 10, and the other end of the insulation handle 2 is a manual operation handle 21, as shown in fig. 4; as shown in fig. 6, the insulating outer rod 1 is provided with a symmetrical rectangular hole 113 corresponding to the position where the insulating handle 2 passes through, and the length direction of the rectangular hole 113 is parallel to the first axis direction.

In some embodiments, an insulating pipe clamp 11 is disposed between the fixing plate 31 and the insulating outer rod 1.

Specifically, an insulating pipe clamp 11 is disposed between the fixing plate 31 and the insulating outer rod 1, the fixing plate 31 and the insulating pipe clamp 11 are integrally formed, and the fixing plate 31 is fixed at the end of the insulating outer rod 1 through the insulating pipe clamp 11.

In some embodiments, an external connection portion 12 is disposed at an end of the insulating outer rod 1 away from the clamping assembly, the external connection portion 12 is used for connecting the two control mechanisms, the two control mechanisms are in transmission connection through a synchronization assembly, and the synchronization assembly is disposed on the control mechanism away from the clamping assembly.

In certain embodiments, the synchronization component comprises: a fixed pulley 13, a movable pulley 14 and a steel wire 15; the fixed pulley 13 is rotatably mounted on the inner wall of the insulating outer rod 1, the movable pulley 14 is rotatably mounted at one end of the insulating pull rod 5, which is far away from the insulating handle 2, one end of the steel wire 15 is fixedly wound on the movable pulley 14, and the other end of the steel wire 15 bypasses the fixed pulley 13 and is connected with the insulating handle 2, which is close to the control mechanism of the clamping assembly.

Specifically, as shown in fig. 11, an external connection portion 12 is disposed at an end of the insulating outer rod 1 away from the clamping assembly, and when the length of one insulating outer rod 1 is insufficient to meet the use requirement, another control mechanism is connected through the external connection portion 12, and the external connection portion is in threaded connection with the other control mechanism;

in this embodiment, as shown in fig. 11, the two control mechanisms are connected, the control mechanism at the front end is provided with the clamping assembly, the two control mechanisms are connected through threads, the insulating handle 2 of the rear end control mechanism is held tightly, the insulating handle 2 drives the insulating pull rod 5 to move downwards, the insulating pull rod drives the movable pulley 14 to move, the movable pulley 14 drives the insulating handle 2 on the control mechanism at the front end to move through the steel wire 15, so that the clamping part 321 moves towards the direction approaching the fixed plate 31, and the clamp-shaped current transformer 18 is opened;

in some embodiments, the end of the steel wire 15 connected with the insulating handle 2 on the control mechanism close to the clamping assembly is provided with a metal ball or a metal rod, and the manual operation handle 21 is provided with a placement hole connected with the metal ball or the metal rod.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (9)

1. An opening and closing device of a pincerlike current transformer, characterized by comprising: a control mechanism and a clamping assembly;

the control mechanism includes: the insulation handle comprises an insulation outer rod (1), an insulation handle (2) and a transmission assembly, wherein the insulation outer rod (1) is hollow, the insulation handle (2) is arranged on the insulation outer rod (1), the clamping assembly is arranged at one end of the insulation outer rod (1) along the first axis direction, and the clamping assembly is connected with the insulation handle (2) through the transmission assembly; the clamping assembly has a first state and a second state, and the insulating handle (2) is used for controlling the clamping assembly to be switched from the first state to the second state;

the clamping assembly includes: the fixing plate (31) and the rotating plate (32), wherein the fixing plate (31) is fixedly arranged at the end part of the insulation outer rod (1), the rotating plate (32) is rotationally connected with the insulation outer rod (1), the rotating plate (32) comprises a clamping part (321) and a connecting part (322), and the connecting part (322) is hinged with the transmission assembly; the clamping part (321) is arranged at one side of the insulating outer rod (1); the clamping part (321) and the fixing plate (31) are used for fixing the handle of the clamp-shaped current transformer (18);

when the clamping assembly is in a first state, the clamping part (321) and the fixing plate (31) drive the handles of the clamp-shaped current transformers (18) to be opened, so that the clamp-shaped current transformers (18) are closed; when the clamping assembly is in the second state, the clamping part (321) and the fixing plate (31) drive the handles of the clamp-shaped current transformers (18) to be closed, so that the clamp-shaped current transformers (18) are opened.

2. The opening and closing device of the clamp-shaped current transformer according to claim 1, wherein a chute (17) is arranged on the clamping part (321), a fixing assembly (4) is arranged in the chute (17), the fixing assembly (4) comprises a rolling bolt (41) and a nut (42), and the fixing assembly (4) is used for fixing a handle of the clamp-shaped current transformer (18).

3. The opening and closing apparatus of a clamp-on current transformer according to claim 1, wherein said transmission assembly comprises:

the insulation pull rod (5) is arranged in the insulation outer rod (1) along the first axis direction, one end of the insulation pull rod (5) is hinged with the insulation handle (2), and the other end of the insulation pull rod (5) is hinged with the connecting part (322);

the elastic component is sleeved on the insulating pull rod (5) along the first axis direction and is used for assisting the clamping component to switch states.

4. The opening and closing device of the clamp-shaped current transformer according to claim 3, wherein the elastic component comprises a spring (6) sleeved on the insulation pull rod (5), one end of the spring (6) close to the insulation handle (2) is fixedly connected with a limiting plate (7), the limiting plate (7) is sleeved on the insulation pull rod (5), and the limiting plate (7) is fixedly connected with the insulation outer rod (1); the other end of the spring (6) is fixedly connected with a limiting pipe (8), the limiting pipe (8) is sleeved on the insulating pull rod (5), and the limiting pipe (8) is fixedly connected with the insulating pull rod (5).

5. The opening and closing device of a clamp-on current transformer according to claim 4, wherein a diagonal draw bar (9) is arranged between the insulation draw bar (5) and the connecting portion (322), a first opening (111) is arranged on one side, away from the clamping portion (321), of the insulation outer rod (1), one end of the diagonal draw bar (9) is hinged with the insulation draw bar (5), and the other end of the diagonal draw bar (9) passes through the first opening (111) and is hinged with the connecting portion (322).

6. The opening and closing device of a pincer-type current transformer according to claim 4, characterized in that said control mechanism further comprises an insulating collar (10), said insulating collar (10) being fixedly arranged on said insulating outer rod (1); the middle part of the insulating handle (2) is positioned in the insulating outer rod (1), both ends of the insulating handle are positioned outside the insulating outer rod (1), one end of the insulating handle (2) is hinged with the insulating clamp (10), and the other end of the insulating handle (2) is a manual operation handle (21); the insulation outer rod (1) is provided with symmetrical rectangular holes (113) corresponding to the positions, through which the insulation handles (2) penetrate, of the insulation outer rod, and the length direction of each rectangular hole (113) is parallel to the first axis direction.

7. Opening and closing device of a pincer-like current transformer according to claim 1, characterized in that an insulating pipe clamp (11) is arranged between the fixing plate (31) and the insulating outer rod (1).

8. The opening and closing device of the clamp-shaped current transformer according to claim 6, wherein an external connection part (12) is arranged at one end of the insulating outer rod (1) far away from the clamping assembly, the external connection part (12) is used for connecting the two control mechanisms, the two control mechanisms are in transmission connection through a synchronous assembly, and the synchronous assembly is arranged on the control mechanism far away from the clamping assembly.

9. The opening and closing apparatus of a clamp-on current transformer according to claim 8, wherein said synchronizing assembly comprises: a fixed pulley (13), a movable pulley (14) and a steel wire (15); the fixed pulley (13) is rotatably arranged on the inner wall of the insulation outer rod (1), the movable pulley (14) is rotatably arranged at one end of the insulation pull rod (5) far away from the insulation handle (2), one end of the steel wire (15) is fixedly wound on the movable pulley (14), and the other end of the steel wire (15) bypasses the fixed pulley (13) and is connected with the insulation handle (2) on the control mechanism close to the clamping assembly.