CN215575446U

CN215575446U - Power line measuring equipment and opening and closing device thereof

Info

Publication number: CN215575446U
Application number: CN202120789904.2U
Authority: CN
Inventors: 张相飞; 亓学庆; 张钊; 宋春亮; 刘国静; 刘靖松; 王建
Original assignee: State Grid Information and Telecommunication Co Ltd; Beijing Smartchip Microelectronics Technology Co Ltd
Current assignee: State Grid Information and Telecommunication Co Ltd; Beijing Smartchip Microelectronics Technology Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-01-18
Anticipated expiration: 2031-04-16

Abstract

The utility model relates to the field of power line measurement and discloses a power line measuring device and an opening and closing device thereof, wherein the opening and closing device comprises a first part and a second part which can be spliced to form a through hole P surrounding a power line, the first part and the second part are hinged on one side of the through hole P and form a releasable connection which can be switched between a connection state and a release state on the other side of the through hole P, and in the connection state, the first part and the second part are pressed against each other to be elastically deformed so as to rotate away from each other around a hinged axis when being switched from the connection state to the release state. The power line measuring equipment's of this application device that opens and shuts is convenient for operate, and spare part is less and has good reliability.

Description

Power line measuring equipment and opening and closing device thereof

Technical Field

The utility model relates to the field of power line detection, in particular to power line measuring equipment and an opening and closing device thereof.

Background

Electric power has been one of the most important and the most important ways of providing energy in modern society. The power transmission channel power grid power line mainly comprises an overhead power line and an underground power cable line. In order to locate a fault in time after a fault occurs in a power line of a power grid, power line measuring equipment such as a fault indicator and a current transformer is usually installed on the power line of the power grid, so that electrical parameters such as current and voltage on the power line of the power grid are monitored, and a fault alarm signal is reported in time when the monitored electrical parameters are abnormally changed due to the fault.

These devices are provided with a switch mechanism for clamping the power cable. When the power cable is used, the two halves of the opening and closing mechanism are opened and surround the power cable, and a magnetic field signal generated by current can be obtained in an electromagnetic induction mode to be measured, or energy can be obtained from a magnetic field generated by the current flowing through a power line. The power line measuring equipment using the opening and closing mechanism can be installed under the condition that a power line is not powered off, so that the installation time and cost can be greatly reduced, and the adaptability of the equipment is improved.

The rotation mechanism that opens and shuts and the mechanism that opens and shuts that goes up and down that current mechanism that opens and shuts adopted the screw rod mode usually, during the operation, no matter open or closed, operating personnel all need carry out the rotation operation through the insulator spindle bare-handed to it is rotatory or the lift is opened and shut to drive the mechanism that opens and shuts, wastes time and energy. In addition, the screw-type rotary opening and closing mechanism and the lifting opening and closing mechanism have the problems of more parts and complex structure, and the reliability of the opening and closing mechanism is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that an opening and closing device of power line measuring equipment in the prior art is inconvenient to operate and low in reliability, and provides the opening and closing device of the power line measuring equipment, which is convenient to operate and high in reliability.

In order to achieve the above object, an aspect of the present invention provides an opening and closing device of an electric power line measuring apparatus, wherein the opening and closing device includes a first portion and a second portion that can be brought together to form a through hole P surrounding an electric power line, the first portion and the second portion being hinged on one side of the through hole P and forming a releasable connection that can be switched between a connected state in which the first portion and the second portion are pressed against each other to be elastically deformed to be able to rotate away from each other about an axis of the hinge when switched from the connected state to the released state.

Optionally, the first and second portions are each formed as a semi-annular structure to be hinged at one end thereof and to form the releasable connection at the other end thereof.

Optionally, the other end of the first part is provided with an engagement pin, and the other end of the second part is provided with a grapple mechanism comprising a grapple cooperating with the engagement pin in the connected state, the grapple being arranged to be operable to engage or release the engagement pin.

Optionally, the grapple mechanism includes a biasing member for biasing the grapple into engagement with the engagement pin.

Optionally, the other end of the second portion is provided with a first mounting boss, the first mounting boss is provided with a mounting hole, the grapple and the biasing member are fixed to a pin, and the pin is mounted in the mounting hole.

Optionally, the axis of the pin shaft and the axis of the snap pin are parallel to the hinge axis of the first component and the hinge axis of the second component.

Optionally, a shield is provided on the second portion for preventing the grapple from being mishandled.

Optionally, the first and second portions are provided with gripping structures for gripping so as to pivot the first and second portions about the axis of the hinge in the direction of the open split state.

Optionally, the first portion and the second portion are both metal pieces.

The application still provides a power line measuring equipment, wherein, power line measuring equipment includes the device that opens and shuts of this application and the detecting element who is used for detecting the electrical parameter on the electric wire netting power line, detecting element install in the device that opens and shuts.

Through the technical scheme, when the first part and the second part need to be closed, the first part and the second part only need to be pivoted to a connection state around a hinged axis and are connected with each other; when the opening is needed, the connection of the first part and the second part is only needed to be released, and the first part and the second part automatically rotate around the axis of the hinge in the direction away from each other due to the elastic deformation in the connection state, so that the opening is automatically realized. Therefore, the opening and closing device of the power line measuring equipment is convenient to operate, has fewer parts and has good reliability.

Drawings

FIG. 1 is a perspective view showing one embodiment of an opening and closing device of the power line measurement apparatus of the present application;

FIG. 2 is a perspective view of the first portion of FIG. 1;

FIG. 3 is a perspective view of a second portion of FIG. 1;

fig. 4 is a perspective view of the releasable connection of the first and second portions of fig. 1.

Description of the reference numerals

10. A first portion; 11. a convex wing; 12. a second mounting boss; 13. a first pin hole; 121. a second mounting hole; 20. a second portion; 21. a first mounting boss; 211. a first mounting hole; 22. a shield; 23. a second pin hole; 30. engaging the pin; 40. a grappling mechanism; 41. a grapple; 411. a head portion; 412. a tail portion; 42. a biasing member; 43. a pin shaft; 50. a hinge pin; p, through holes.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to one aspect of the present application, there is provided an opening and closing device of an electric power line measuring apparatus, wherein the opening and closing device includes a first portion 10 and a second portion 20 capable of being spliced to form a through hole P surrounding an electric power line, the first portion 10 and the second portion 20 are hinged on one side of the through hole P and form a releasable connection switchable between a connection state and a release state on the other side of the through hole P, in the connection state, the first portion 10 and the second portion 20 are pressed against each other to be elastically deformed so as to be capable of rotating away from each other about an axis of the hinge when switched from the connection state to the release state.

With the opening and closing device of the present application, when it is desired to close, it is only necessary to pivot the first and

second parts

10 and 20 about the axis of articulation (i.e. the axis of the hinge pin 50 in fig. 1) to the connected state and to each other; when it is desired to open, the first part 10 and the second part 20 will automatically rotate about the hinge axis in a direction away from each other due to the elastic deformation in the connected state, and thus will automatically open, simply by releasing the connection of the first part 10 and the second part 20. Therefore, the opening and closing device of the power line measuring equipment is convenient to operate, has fewer parts and has good reliability.

In the present application, the first and

second portions

10 and 20 may be formed in an appropriate structure and shape to be able to be coupled to form the through-hole P. In order to simplify the structure and facilitate the overall stability, as shown in fig. 1 to 3, the first and

second parts

10 and 20 are each formed in a semi-annular structure (i.e., the first and

second parts

10 and 20 respectively form half of the through hole P) to be hinged at one end of the first and second parts 10 and 20 (e.g., a first pin hole 13 and a second pin hole 23 may be provided on the first and

second parts

10 and 20 respectively, and the first and

second parts

10 and 20 are hinged to each other by a hinge shaft 50 passing through the first and second pin holes 13 and 23), and the other end forms the releasable connection. Thus, when the first part 10 and the second part 20 are in a connected state, a complete ring structure can be formed by splicing, so that a through hole P is formed in the middle of the ring structure. Wherein, the first pin hole 13 and the second pin hole 23 may be provided by providing a mount at the bottom of the first part 10 and the second part 20, respectively, and the mount may be shaped to restrict rotation of the first part 10 and the second part 20 apart from each other by the elastic deformation when switched to the release state. That is, when the first and

second portions

10 and 20 are rotated to a predetermined position, the mounting seats of the first and

second portions

10 and 20 will contact each other to restrict further rotation of the first and

second portions

10 and 20.

Wherein the releasable connection of the first part 10 and the second part 20 may be formed in a suitable manner. For ease of handling, in particular for release, it is preferred that the first part 10 and the second part 20 form a snap fit with each other. To this end, the other end of the first part 10 may be provided with a snapping pin 30, the other end of the second part 20 may be provided with a catch mechanism 40, the catch mechanism 40 comprising a catch 41 cooperating with the snapping pin 30 in the connected state, the catch 41 being arranged to be operable to engage or release the snapping pin 30.

When switching the first part 10 and the second part 20 from the connected state to the released state, the catch 41 can be operated to release the snapping pin 30, as the first part 10 and the second part 20 are elastically deformed by pressing against each other in the connected state, when the catch 41 releases the snapping pin 30, the first part 10 and the second part 20 will automatically rotate about the hinge axis and separate from each other under the effect of the elastic deformation. When switching the first part 10 and the second part 20 from the released state to the connected state, it is possible to elastically deform and temporarily maintain the state by pressing the first part 10 and the second part 20 against each other (for example, by a suitable tool), and then operate the catch 41 to engage the snapping pin 30 to maintain the pressing of the first part 10 and the second part 20 by the engagement of the catch 41 and the snapping pin 30.

To ensure that the grapple 41 and the snapping pin 30 are stably coupled and maintain the first portion 10 and the second portion 20 pressed against each other, the grapple mechanism 40 may include a biasing member 42 for biasing the grapple 41 into a position engaged with the snapping pin 30, as shown in fig. 4. Specifically, the biasing member 42 may be a spring, or may take other forms (e.g., a rubber block) capable of exerting a biasing force.

The grapple 41 is operable to engage and release the snapping pin 30 depending on its mounting configuration. In the illustrated embodiment, the other end of the second portion 20 is provided with a first mounting boss 21, the first mounting boss 21 is provided with a first mounting hole 211, the catch 41 and the biasing member 42 are fixed to a pin shaft 43, and the pin shaft 43 is mounted to the first mounting hole 211. Specifically, the other end of the second portion 20 may be integrally formed with two first mounting bosses 21, which are oppositely disposed, the two first mounting bosses 21 are correspondingly provided with first mounting holes 211, and the pin 43 passes through the two first mounting holes 211 to be fixed. The grapple 41 may be provided with a corresponding fitting hole to be fitted over the pin shaft 43. When the biasing member 42 is a coil spring, the coil spring may be fitted over the pin 43 with one end fixed to the pin 43 and the other end fixed to the grapple 41. The biasing member 42 is arranged to maintain the catch 41 in the first position in engagement with the bayonet pin 30, and when it is desired to release the connection of the first and

second parts

10, 20, the catch 41 can be pressed to rotate about the pin 43 against the biasing force of the biasing member 42, and when the first and

second parts

10, 20 are separated, the catch 41 is released and the biasing member 42 will return the catch 41 to the first position. When it is desired to connect the first part 10 and the second part 20, the catch 41 may be pressed so that the catch 41 is slightly displaced from the first position to make room for the first part 10 and the second part 20 to be able to press against each other, whereafter the catch 41 may be released to bring the catch 41 into the first position and into engagement with the engagement pin 30 under the action of the biasing member 42.

In order to improve the overall stability of the opening and closing device, it is preferable to perform the operation and movement of each component in the same plane. For this purpose, the axis of the pin 43, the snap-in pin 30 and the hinge axis of the first part 10 and the second part 20 are arranged in parallel. More preferably, two second mounting bosses 12 are integrally formed on the first member 10, corresponding second mounting holes 121 are formed on the second mounting bosses 12, and the snap pin 30 can be fixed through the second mounting holes 121. That is, the pin shaft 43 and the interlocking pin 30 may be located on both sides of the center line of the through-hole P, respectively.

Furthermore, in order to prevent accidental contact of the catch hook 41 out of engagement with the bayonet pin 30, the second portion 20 is provided with a shutter 22 for preventing accidental operation of the catch hook 41. Specifically, the end of the grapple 41 engaged with the snapping pin 30 is a head portion 411, the other end is a tail portion 412, and the shielding member 22 may be a slope extending from the top of the second portion 20 and extending obliquely above the tail portion 412 of the grapple 41, wherein the slope gradually rises in a direction from the tail portion 412 to the head portion 411 of the grapple 41 to guide the operator's fingers to approach the tail portion 412 of the grapple 41 and to grab the tail portion 412 for operation while functioning to prevent erroneous operation when performing normal operation on the grapple 41.

In addition, the first and

second portions

10 and 20 are provided with a holding structure for holding so as to pivot the first and

second portions

10 and 20 about the axis of the hinge in the direction of the open split state. By providing a gripping formation, it is possible to manually grip the corresponding gripping formation to cause the first part 10 and the second part 20 to rotate about the axis of articulation to separate in the event of a failure of the operation of the grapple 41. In particular, corresponding structures may additionally be provided on the first portion 10 and said second portion 20 to form gripping structures. In the illustrated embodiment, the shield 22 may be utilized as a gripping structure on the second portion 20, and the first portion 10 may be provided with the projecting fins 11 at positions corresponding to the shield 22 as gripping structures on the first portion. Wherein the protruding fin 11 and the shutter 22 may be disposed near the other ends (i.e., tops) of the first and

second portions

10 and 20, respectively, to increase the moment.

In the present application, in order to ensure the strength of the opening and closing device and facilitate the use of surrounding the power cable to obtain the magnetic field signal generated by the current through the electromagnetic induction, the first portion 10 and the second portion 20 are both metal pieces. When the first part 10 and the second part 20 are in the connected state, they are pressed against each other to be elastically deformed so that they are in an interference state to be able to open automatically when switched to the released state. The first portion 10 and the second portion 20 may be a single piece or separate pieces, for example, the first mounting boss 21 and the second mounting boss 12 may be integrally disposed on the first portion 10 and the second portion 20, and the mounting seat, the protruding fin 11 and the shielding member 22 may be separate pieces fixed (e.g., by fasteners) on the first portion 10 and the second portion 20.

According to another aspect of the present application, there is also provided an electric power line measurement apparatus, wherein the electric power line measurement apparatus includes the opening and closing device of the present application and a detection unit for detecting an electric parameter on a power line of a power grid, and the detection unit is mounted on the opening and closing device.

With the opening and closing device of the present application, it is possible to open the opening and closing device conveniently in a state of surrounding the power line (i.e., keeping the first part 10 and the second part 20 in a connected state with the power line passing through the through-hole P), so that the detection unit can perform detection of the electrical parameter of the power line. The detection unit can be used for detecting electrical parameters such as current and voltage of the power line.

The power line measuring device of the present application may be a fault indicator, a current sensor, etc., among others, according to the required functionality.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the utility model, many simple modifications can be made to the technical solution of the utility model. The present application includes the combination of individual features in any suitable manner. The utility model is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. An opening and closing device for an electric power line measuring apparatus, characterized in that it comprises a first part (10) and a second part (20) able to be spliced to form a through hole P surrounding an electric power line, said first part (10) and said second part (20) being hinged on one side of said through hole P and forming a releasable connection on the other side of said through hole P, able to be switched between a connected condition in which said first part (10) and said second part (20) are pressed against each other to be elastically deformed so as to be able to rotate away from each other about the axis of hinging when switching from said connected condition to said released condition.

2. Switching device of an electric line measuring equipment according to claim 1, characterized in that said first (10) and second (20) parts are each formed as a semi-annular structure, so as to be hinged at one end of said first (10) and second (20) parts, the other end forming said releasable connection.

3. Opening and closing device for an electric power line measuring equipment according to claim 2, characterized in that the other end of the first part (10) is provided with a snapping pin (30) and the other end of the second part (20) is provided with a catch mechanism (40), which catch mechanism (40) comprises a catch (41) cooperating with the snapping pin (30) in the connected state, which catch (41) is arranged to be operable to engage or release the snapping pin (30).

4. Opening and closing device of an electric line measuring apparatus according to claim 3, characterized in that the grapple mechanism (40) comprises a biasing member (42) for biasing the grapple (41) in a position of engagement with the snapping pin (30).

5. The opening and closing device of an electric power line measuring apparatus according to claim 4, wherein the other end of the second portion (20) is provided with a first mounting boss (21), the first mounting boss (21) is provided with a mounting hole (211), the catch (41) and the biasing member (42) are fixed to a pin shaft (43), and the pin shaft (43) is mounted to the mounting hole (211).

6. Opening and closing device for an electric line measuring apparatus according to claim 5, characterized in that the pin (43), the axis of the snap-in pin (30) and the hinging axis of the first part (10) and the second part (20) are arranged in parallel.

7. Switching device of an electric power line measuring equipment according to claim 3, characterized in that a shutter (22) for preventing the malfunction of the grapple (41) is provided on the second part (20).

8. The opening and closing device of an electric power line measuring apparatus according to claim 1, wherein the first portion (10) and the second portion (20) are provided with gripping structures for gripping so as to pivot the first portion (10) and the second portion (20) about the axis of the hinge in the direction of the open state.

9. Switching device for an electric power line measuring equipment according to claim 1, characterized in that said first (10) and second (20) parts are both metal pieces.

10. An electric power line measuring device, characterized in that the electric power line measuring device comprises the opening and closing device of any one of claims 1-9 and a detecting unit for detecting an electric parameter on an electric power line of a power grid, wherein the detecting unit is mounted on the opening and closing device.