A kind of leakage current meter live detection device

Abstract

The present invention proposes a leakage current meter live detection device, comprising a measuring instrument, a fixed measuring arm, a movable measuring arm, and a transmission mechanism, wherein a fixed fulcrum is provided at the connection position between the movable measuring arm and the fixed measuring arm; one end of the fixed measuring arm and the movable measuring arm are respectively connected to the input end of the measuring instrument, and when the fixed measuring arm and the movable measuring arm are clamped and set on the leakage current meter, the fixed measuring arm, the movable measuring arm, and the leakage current meter form a closed loop; the movable measuring arm is connected to the transmission mechanism, and the transmission mechanism controls the movable measuring arm and the fixed measuring arm to perform an opening and closing action. The present invention is used to control the fixed measuring arm, the movable measuring arm, and the leakage current meter clamping setting through the transmission mechanism, and the closed loop composed of the movable measuring arm, the fixed measuring arm, and the leakage current meter to be tested flows the current of the live leakage current meter into the measuring instrument for detection, thereby effectively detecting the current operating status of the leakage current meter.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and more specifically, to a leakage current meter live detection device. Background Art

[0002] At present, lightning arresters and their leakage current meters are widely used in substations. Due to the quality problems of the leakage current meter equipment itself and the fact that the leakage current meter is set outdoors and is affected by environmental factors such as sun and rain, the leakage current meter often indicates incorrectly or cannot directly indicate the actual leakage current of the lightning arrester, which will lead to the inability to correctly monitor the status of the lightning arrester equipment and increase the operating risk of the equipment. In addition, there is currently no equipment that can effectively verify the operating status of the current leakage current meter, and the leakage current meter cannot be repaired in time, which further increases the operating risk of the equipment and brings safety hazards to the operators. Summary of the invention

[0003] In order to overcome the defect of the prior art that the current operating status of the leakage current meter cannot be effectively detected, the present invention provides a leakage current meter live detection device.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0005] A live detection device for a leakage current meter comprises a measuring instrument, a fixed measuring arm, a movable measuring arm and a transmission mechanism, wherein a fixed fulcrum is arranged at the connection position between the movable measuring arm and the fixed measuring arm; one end of the fixed measuring arm and the movable measuring arm are respectively connected to the input end of the measuring instrument, and when the fixed measuring arm and the movable measuring arm are clamped and arranged on the leakage current meter, the fixed measuring arm, the movable measuring arm and the leakage current meter form a closed loop; the movable measuring arm is connected to the transmission mechanism, and the transmission mechanism controls the movable measuring arm and the fixed measuring arm to perform opening and closing actions.

[0006] In the technical scheme, the measuring instrument is used in conjunction with the fixed measuring arm and the movable measuring arm, wherein the fixed measuring arm and the movable measuring arm are closed to form an annular space. When the device to be measured in the annular space passes current, the fixed measuring arm and the movable measuring arm clamped and connected thereto form a fixed measuring loop to flow the current into the measuring instrument set at one end of the fixed measuring arm and the movable measuring arm, further realizing the current measurement of the device to be measured, thereby realizing the live detection of the device to be detected. The transmission mechanism is used to control the opening and closing operation of the movable measuring arm with the fixed measuring arm around the fixed fulcrum, so as to facilitate the entry and exit of the device to be measured. During use, the movement of the movable measuring arm is controlled by controlling the transmission end of the transmission mechanism, so that the fixed measuring arm and the movable measuring arm on the live detection device of the leakage current meter are opened, and the open space between the fixed measuring arm and the movable measuring arm is set on the periphery of the device to be detected, and then the closure of the fixed measuring arm and the movable measuring arm is controlled by the transmission mechanism, so that the device to be detected passes through the annular loop between the fixed measuring arm and the movable measuring arm, thereby realizing the detection of the device to be measured.

[0007] Preferably, the transmission mechanism includes a first rotating arm, a second rotating arm, a transmission arm and a first rotating shaft, wherein the lower surface of the first rotating arm is fixedly connected to the movable measuring arm, and a spring is arranged between the first rotating arm and the fixed fulcrum; the bottom of the second rotating arm is fixedly arranged on the top of the first rotating shaft; one side of the upper surface of the first rotating arm and the second rotating arm has a protrusion structure, the first rotating arm and the second rotating arm are connected by a transmission arm, movable rings are arranged at both ends of the transmission arm, and the movable rings are respectively sleeved on the protrusion structures of the first rotating arm and the second rotating arm; the bottom end of the first rotating shaft is extended out through a hole opened at the bottom of the measuring instrument.

[0008] The spring arranged between the first rotating arm and the fixed fulcrum is used to keep the movable measuring arm in a closed state with the fixed measuring arm in the absence of external force, so that the fixed measuring arm and the movable measuring arm are closed to form an annular space; the protrusion structure on the upper surface of the first rotating arm and the second rotating arm is used to drive the operation of the first rotating arm and the second rotating arm under the action of the transmission arm when the first rotating shaft rotates; the movable ring sleeved on the protrusion structure is used to connect the first rotating arm and the second rotating arm through the transmission arm. During use, the external force acts on the bottom of the first rotating shaft, and the second rotating arm arranged on the top of the first rotating shaft is driven to rotate clockwise by rotating the bottom of the first rotating shaft clockwise, and the protrusion structure arranged on the second rotating arm moves to the side away from the movable measuring arm, and the protrusion structure on the first rotating arm is driven to move to the side away from the movable measuring arm under the transmission action of the movable ring sleeved on the protrusion structure and the transmission arm connected to the movable ring, and the movable measuring arm fixedly connected to the first rotating arm is opened.

[0009] Preferably, the transmission mechanism further comprises a second rotating shaft, a female buckle is provided at the bottom of the first rotating shaft, a male buckle matching the female buckle is provided at the top of the second rotating shaft, and a rotating mechanism is provided at the bottom of the second rotating shaft; the second rotating shaft is engaged with the female buckle provided at the bottom of the first rotating shaft through the male buckle provided at the top of the second rotating shaft. By engaging the second rotating shaft with the first rotating shaft, the length of the rotating shaft part of the transmission mechanism is extended, ensuring that the operator maintains a sufficient safety distance from the measuring instrument.

[0010] Preferably, the transmission mechanism further includes a third rotating shaft, one end of the third rotating shaft is provided with a male buckle, the other end of the third rotating shaft is provided with a female buckle, and the third rotating shaft is respectively engaged with the female buckle of the first rotating shaft and the male buckle of the second rotating shaft through the male buckle and the female buckle provided at both ends of the third rotating shaft. By engaging the third rotating shaft with the first rotating shaft and the second rotating shaft respectively, the length of the rotating shaft part of the transmission mechanism is further extended, and it is further ensured that the operator maintains a sufficient safety distance from the measuring instrument.

[0011] Preferably, the first rotating shaft, the second rotating shaft, and the third rotating shaft are respectively sleeved with a first connecting rod, a second connecting rod, and a third connecting rod; the bottom end of the first connecting rod is provided with an external thread; the top end of the second connecting rod is provided with an internal thread, and the bottom of the second connecting rod is provided with a rotating handle, and the rotating handle is matched and connected with the rotating mechanism provided at the bottom of the second rotating shaft; the two ends of the third connecting rod are respectively provided with an external thread and an internal thread. Among them, the connecting rod sleeved on the outside of the first rotating shaft, the second rotating shaft, and the third rotating shaft is used to protect the rotating shaft part of the transmission mechanism, avoid damage to the rotating shaft, and prevent the operator from directly contacting the transmission mechanism and causing electric shock.

[0012] Preferably, the movable sleeves on the first connecting rod, the second connecting rod and the third connecting rod are provided with fixed sleeves, and the fixed sleeves are provided at the threaded connection positions of the first connecting rod and the third connecting rod, and at the threaded connection positions of the third connecting rod and the second connecting rod. The fixed sleeves are used to be fixed at the connection positions of the connecting rods to form a sufficient and reliable space to ensure the rotation of the rotating shaft after the male buckle and the female buckle are engaged.

[0013] Preferably, the first connecting rod, the second connecting rod and the third connecting rod are made of insulating material, and the first rotating shaft, the second rotating shaft and the third rotating shaft are made of insulating material, which are used to isolate the closed electrical circuit formed by the movable measuring arm and the fixed measuring arm to prevent operators from electric shock.

[0014] Preferably, the outer surface of the rotating handle arranged at the bottom of the second connecting rod is provided with an anti-slip structure to facilitate the operator to rotate the rotating shaft of the transmission mechanism.

[0015] Preferably, the measuring instrument includes a multimeter, a display screen, a power detection light, and function buttons, wherein the display screen is used to display the value currently measured by the multimeter, and the display screen is tilted downward at 45 degrees; the power detection light is used to indicate the working status of the multimeter; and the function buttons are used to select the current gear currently used by the multimeter.

[0016] Preferably, the display screen is arranged to be tilted downward on the outer surface of the measuring instrument to facilitate reading by operators.

[0017] Compared with the prior art, the beneficial effect of the technical solution of the present invention is: the movable measuring arm and the fixed measuring arm are controlled by the transmission mechanism to be clamped on the leakage current meter to be tested for live detection. The closed loop composed of the movable measuring arm, the fixed measuring arm and the leakage current meter to be tested flows the current of the live equipment into the measuring instrument for detection, which can effectively detect the current operating status of the leakage current meter and ensure that the operating personnel perform operations at a safe distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the leakage current meter live detection device of Example 1.

[0019] Figure 2 This is a partial structural diagram of the transmission mechanism of Example 1.

[0020] Figure 3 It is a structural schematic diagram of the leakage current meter live detection device of Example 2.

[0021] Among them, 1-measuring instrument, 11-multimeter, 12-display screen, 13-power detection light, 14-function button, 2-fixed measuring arm, 3-movable measuring arm, 4-transmission mechanism, 41-first rotating support arm, 411-protrusion structure, 42-second rotating support arm, 421-protrusion structure, 43-transmission arm, 44-first rotating shaft, 441-female buckle, 46-transmission arm, 47-movable ring, 48-second rotating shaft, 481-male buckle, 49-third rotating shaft, 491-male buckle, 492-female buckle, 5-fixed fulcrum, 6-spring, 7-first connecting rod, 8-second connecting rod, 81-rotating handle, 9-third connecting rod. DETAILED DESCRIPTION

[0022] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0023] In order to better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0024] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Example 1

[0027] This embodiment provides a leakage current meter live detection device, such as Figure 1 , which is a schematic structural diagram of the leakage current meter live detection device of this embodiment.

[0028] The leakage current meter live detection device proposed in this embodiment includes a measuring instrument 1, a fixed measuring arm 2, a movable measuring arm 3, and a transmission mechanism 4, wherein: one end of the movable measuring arm 3 is connected to a fixed fulcrum 5 provided on the fixed measuring arm 2, and one end of the fixed measuring arm 2 and the movable measuring arm 3 are respectively connected to the input end of the measuring instrument 1; the movable measuring arm 3 is connected to the transmission mechanism 4, and the transmission mechanism 4 controls the movable measuring arm 3 to open and close with the fixed measuring arm 2 with the fixed fulcrum 5 as the center.

[0029] In this embodiment, the transmission mechanism 4 includes a first rotating arm 41, a second rotating arm 42, a transmission arm 43 and a first rotating shaft 44, wherein the lower surface of the first rotating arm 41 is fixedly connected to the movable measuring arm 3, and a spring 6 is arranged between the first rotating arm 41 and the fixed fulcrum 5; the bottom of the second rotating arm 42 is fixedly arranged on the top of the first rotating shaft 44; the upper surfaces of the first rotating arm 41 and the second rotating arm 42 have protrusion structures 411 / 421, the first rotating arm 41 and the second rotating arm 42 are connected by the transmission arm 43, and movable rings 47 are arranged at both ends of the transmission arm 43, and the movable rings 47 are respectively sleeved on the protrusion structures 411 / 421 of the first rotating arm 41 and the second rotating arm 42; the bottom end of the first rotating shaft 41 is extended through the hole opened at the bottom of the measuring instrument 1. In this embodiment, the transmission arm 43 is a round rod, and the first rotating shaft 44 is made of insulating material.

[0030] like Figure 2 , which is a schematic diagram of the structure of the transmission mechanism 4 of this embodiment.

[0031] In this embodiment, the measuring instrument 1 includes a multimeter 11, a display screen 12, a power detection light 13, and a function button 14, wherein the multimeter 11 is used as a detection device to detect the current or voltage flowing into the circular measurement loop formed by the fixed measuring arm 2 and the movable measuring arm 3; the display screen 12 is used to display the value currently measured by the multimeter 11, and the display screen 12 is tilted downward at 45 degrees; the power detection light 13 is used to indicate the working status of the multimeter 11; the function button 14 is used to select the current gear currently used by the multimeter 11.

[0032] In the specific implementation process, under the traction of the spring 6 arranged between the first rotating support arm 41 and the fixed fulcrum 5, in the absence of external force acting on the transmission mechanism 4, the movable measuring arm 3 and the fixed measuring arm 2 remain in a closed state, the fixed measuring arm 2 and the movable measuring arm 3 are made of metal material, and the contact position of the fixed measuring arm 2 and the movable measuring arm 3 is exposed. When the fixed measuring arm 2 and the movable measuring arm 3 are closed, or when the fixed measuring arm 2 and the movable measuring arm 3 are clamped on the leakage current meter to be detected, a closed measurement loop is formed.

[0033] The movable measuring arm 3 opens the opening between the movable measuring arm 3 and the fixed measuring arm 2 under the action of the transmission mechanism 4, so that the annular space between the fixed measuring arm 2 and the movable measuring arm 3 is used for clamping and setting with the device to be detected, so as to realize the live detection of the device to be detected. When the device to be measured in the annular space carries current, the annular measurement loop formed by the fixed measuring arm 2 and the movable measuring arm 3 clamped and connected thereto flows the current into the measuring instrument 1, further realizing the current measurement of the device to be measured, thereby realizing the live detection of the device to be detected.

[0034] When it is necessary to open the closed annular space between the fixed measuring arm 2 and the movable measuring arm 3, the bottom of the first rotating shaft 44 is rotated clockwise to drive the second rotating arm 42 set on the top of the first rotating shaft 44 to rotate clockwise, and the protrusion structure 421 set on the second rotating arm 42 moves to the side away from the movable measuring arm 3. Through the transmission action of the movable ring 47 sleeved on the protrusion structure 421 and the transmission arm 46 connected to the movable ring 47, the first rotating arm 41 is driven to rotate clockwise, and the protrusion structure 411 on the first rotating arm 41 moves to the side away from the movable measuring arm 3. At this time, the spring 6 is in a stretched state, and the movable measuring arm 3 fixedly connected to the first rotating arm 41 moves upward and opens, thereby realizing the opening between the movable measuring arm 3 and the fixed measuring arm 2. When it is necessary to close the fixed measuring arm 2 and the movable measuring arm 3, the bottom of the first rotating shaft 44 is rotated counterclockwise, thereby driving the second rotating arm 42 set on the top of the first rotating shaft 44 to rotate counterclockwise, and the protrusion structure 421 set on the second rotating arm 42 moves toward the side close to the movable measuring arm 3. Through the transmission action of the movable ring 47 sleeved on the protrusion structure 421 and the transmission arm 46 connected to the movable ring 47, the first rotating arm 41 is driven to rotate counterclockwise, and the protrusion structure 411 on the first rotating arm 41 moves toward the side close to the movable measuring arm 3. The movable measuring arm 3 fixedly connected to the first rotating arm 41 moves downward and closes. At this time, the spring 6 returns to its original state, thereby realizing the opening and closing movement between the movable measuring arm 3 and the fixed measuring arm 2.

[0035] In this embodiment, the movable measuring arm 3 and the fixed measuring arm 2 are clamped and set on the equipment to be tested through the transmission mechanism 4. When the equipment to be tested is energized, the movable measuring arm 3 and the fixed measuring arm 2 clamped therewith form a closed loop. At this time, the current flows into the multimeter 11 in the measuring instrument 1 through the closed loop, and combined with the use of the display screen 12, the power detection light 13, and the function button 14, the operator can quickly, safely and accurately detect the charging condition and charging data of the equipment to be tested.

[0036] Example 2

[0037] This embodiment provides a leakage current meter live detection device, such as Figure 3 , which is a schematic structural diagram of the leakage current meter live detection device of this embodiment.

[0038] The leakage current meter live detection device proposed in this embodiment includes a measuring instrument 1, a fixed measuring arm 2, a movable measuring arm 3, and a transmission mechanism 4, wherein: one end of the movable measuring arm 3 is connected to a fixed fulcrum 5 provided on the fixed measuring arm 2, and one end of the fixed measuring arm 2 and the movable measuring arm 3 are respectively connected to the input end of the measuring instrument 1; the movable measuring arm 3 is connected to the transmission mechanism 4, and the transmission mechanism 4 controls the movable measuring arm 3 to open and close with the fixed measuring arm 2 with the fixed fulcrum 5 as the center.

[0039] Among them, the transmission mechanism 4 includes a first rotating arm 41, a second rotating arm 42, a transmission arm 43 and a first rotating shaft 44, wherein the lower surface of the first rotating arm 41 is fixedly connected to the movable measuring arm 3, and a spring 6 is arranged between the first rotating arm 41 and the fixed fulcrum 5; the bottom of the second rotating arm 42 is fixedly arranged on the top of the first rotating shaft 44; the upper surfaces of the first rotating arm 41 and the second rotating arm 42 have protrusion structures 411 / 421, the first rotating arm 41 and the second rotating arm 42 are connected by the transmission arm 43, and movable rings 47 are arranged at both ends of the transmission arm 43, and the movable rings 47 are respectively sleeved on the protrusion structures 411 / 421 of the first rotating arm 41 and the second rotating arm 42; the bottom end of the first rotating shaft 41 is extended out through the hole opened at the bottom of the measuring instrument 1.

[0040] In this embodiment, the transmission mechanism further includes a second rotating shaft 48 and a third rotating shaft 49, wherein a female buckle 441 is provided at the bottom of the first rotating shaft 44; a male buckle 481 matching the female buckle 441 is provided at the top of the second rotating shaft 48, and a rotating mechanism is provided at the bottom of the second rotating shaft 48; a male buckle 491 is provided at one end of the third rotating shaft 49, and a female buckle 492 is provided at the other end of the third rotating shaft. The third rotating shaft 49 is respectively engaged with the female buckle 441 of the first rotating shaft 44 and the male buckle 481 of the second rotating shaft 48 through the male buckle 491 and the female buckle 492 provided at both ends of the third rotating shaft 49, thereby further extending the length of the rotating shaft portion of the transmission mechanism 4 and further ensuring that the operator maintains a sufficient safety distance from the measuring instrument.

[0041] In this embodiment, the first rotating shaft 44, the second rotating shaft 48, and the third rotating shaft 49 are respectively sleeved with the first connecting rod 7, the second connecting rod 8, and the third connecting rod 9; the bottom end of the first connecting rod 7 is provided with an external thread; the top end of the second connecting rod 8 is provided with an internal thread, and the bottom of the second connecting rod 8 is provided with a rotating handle 81, the rotating handle 81 is matched and connected with the rotating mechanism provided at the bottom of the second rotating shaft 8, and the outer surface of the rotating handle 81 is provided with an anti-slip structure; the two ends of the third connecting rod 9 are respectively provided with external threads and internal threads. The first connecting rod 7, the second connecting rod 8, and the third connecting rod 9 are respectively threadedly connected through their internal threads and external threads.

[0042] In this embodiment, a fixing sleeve 10 is movably sleeved on the first connecting rod 7, the second connecting rod 8, and the third connecting rod 9, and the fixing sleeve 10 is sleeved on the threaded connection position between the first connecting rod 7 and the third connecting rod 9, and the threaded connection position between the third connecting rod 9 and the second connecting rod 8. The fixing sleeve 10 is used to form a sufficient and reliable space at the connection part of the connecting rod to ensure the rotation of the rotating shaft after the male buckle and the female buckle are engaged.

[0043] In this embodiment, the first connecting rod 7, the second connecting rod 8, and the third connecting rod 9 are made of insulating materials, and the first rotating shaft 44, the second rotating shaft 48, and the third rotating shaft 49 are made of insulating materials, which are used to isolate the closed electrical circuit formed by the movable measuring arm and the fixed measuring arm to prevent the operator from getting an electric shock. In addition, the lengths of the third connecting rod 9 and the third rotating shaft 49 in this embodiment include 0.7 meters, 1.5 meters, 3 meters, and 5 meters. In the specific use process, different lengths of the third connecting rod 9 and the third rotating shaft 49 can be used according to the installation position and safety distance of the device to be tested.

[0044] In this embodiment, the measuring instrument 1 includes a multimeter 11, a display screen 12, a power detection light 13, and a function button 14, wherein the multimeter 11 is used as a detection device to detect the current or voltage flowing into the circular measurement loop formed by the fixed measuring arm 2 and the movable measuring arm 3; the display screen 12 is used to display the value currently measured by the multimeter 11, and the display screen 12 is tilted downward at 45 degrees; the power detection light 13 is used to indicate the working status of the multimeter 11; the function button 14 is used to select the current gear currently used by the multimeter 11.

[0045] During the specific implementation process, the third connecting rod 9 and the third rotating shaft 49 of corresponding lengths are selected according to the installation position and safety distance of the device to be tested, and the third rotating shaft 49 is respectively connected with the female buckle 441 of the first rotating shaft 44 and the male buckle 481 of the second rotating shaft 48 through the male buckle 491 and the female buckle 492 set at both ends of the third rotating shaft 49, and then the first connecting rod 7, the second connecting rod 8, and the third connecting rod 9 are respectively threadedly connected through their internal threads and external threads to complete the installation and setting of the rotating shaft part of the transmission mechanism 4.

[0046] In the absence of external force acting on the transmission mechanism 4, under the traction of the spring 6 arranged between the first rotating support arm 41 and the fixed fulcrum 5, the movable measuring arm 3 and the fixed measuring arm 2 remain in a closed state, and the fixed measuring arm 2 and the movable measuring arm 3 are made of metal material. When the fixed measuring arm 2 and the movable measuring arm 3 are closed, or when the fixed measuring arm 2 and the movable measuring arm 3 are clamped on the outer surface of the leakage current meter to be detected, a closed measurement loop can be formed.

[0047] During use, the movable measuring arm 3 opens the opening between the movable measuring arm 3 and the fixed measuring arm 2 under the action of the transmission mechanism 4, so that the fixed measuring arm 2 and the movable measuring arm 3 are clamped and arranged on the clamping periphery of the device to be detected, and the live detection of the device to be detected is performed. When the device to be measured carries current, the closed measurement loop formed by the fixed measuring arm 2 and the movable measuring arm 3 clamped and connected thereto flows the current into the measuring instrument 1, further realizing the live current measurement of the device to be measured, thereby realizing the live detection of the device to be detected. When it is necessary to open or close the closed annular space between the fixed measuring arm 2 and the movable measuring arm 3, a rotating mechanism is arranged at the bottom of the second rotating shaft 48 by rotating it clockwise or counterclockwise. The second rotating shaft 48 drives the second rotating arm 42 arranged on the top of the first rotating shaft 44 to rotate clockwise or counterclockwise through the third rotating shaft 49 and the first rotating shaft 44 connected thereto in sequence, and then drives the first rotating arm 41 to rotate clockwise or counterclockwise under the transmission action of the movable ring 47 sleeved on the protruding structure 421 and the transmission arm 46 connected to the movable ring 47. The protruding structure 411 on the first rotating arm 41 moves toward the side away from or close to the movable measuring arm 3, and the movable measuring arm 3 fixedly connected to the first rotating arm 41 moves upward to open the annular space or moves downward to close the annular space, thereby realizing the opening and closing of the movable measuring arm 3 and the fixed measuring arm 2.

[0048] In this embodiment, by adding a second rotating shaft 48, a third rotating shaft 49, and the first connecting rod 7, the second connecting rod 8, and the third connecting rod 9 used in conjunction with them, a third rotating shaft 49 of corresponding length and a third connecting rod 9 used in conjunction with it are selected according to the actual safety distance used, so as to realize the length adjustment of the rotating shaft of the transmission mechanism 4 and ensure that the operator is always at a safe distance.

[0049] The same or similar reference numerals correspond to the same or similar components;

[0050] The terms used in the drawings to describe positional relationships are only used for illustrative purposes and should not be construed as limiting this patent;

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A leakage current meter live detection device, characterized in that: It comprises a measuring instrument, a fixed measuring arm, a movable measuring arm, and a transmission mechanism, wherein a fixed fulcrum is provided at the connection position between the movable measuring arm and the fixed measuring arm; one end of the fixed measuring arm and the movable measuring arm are respectively connected to the input end of the measuring instrument, and when the fixed measuring arm and the movable measuring arm are clamped and set on the leakage current meter, the fixed measuring arm, the movable measuring arm, and the leakage current meter form a closed loop; the movable measuring arm is connected to the transmission mechanism, and the transmission mechanism controls the movable measuring arm and the fixed measuring arm to perform opening and closing actions; The transmission mechanism comprises a first rotating support arm, a second rotating support arm, a transmission arm and a first rotating shaft, wherein the lower surface of the first rotating support arm is fixedly connected to the movable measuring arm, and a spring is arranged between the first rotating support arm and the fixed fulcrum; the bottom of the second rotating support arm is fixedly arranged on the top of the first rotating shaft; the upper surfaces of the first rotating support arm and the second rotating support arm have protrusion structures, the first rotating support arm and the second rotating support arm are connected by the transmission arm, movable rings are arranged at both ends of the transmission arm, and the movable rings are respectively sleeved on the protrusion structures of the first rotating support arm and the second rotating support arm; the bottom end of the first rotating shaft is extended out of the measuring instrument through a hole opened at the bottom of the measuring instrument; The measuring instrument includes a multimeter, a display screen, a power detection light, and function buttons.

2. The leakage current meter live detection device according to claim 1, characterized in that: The transmission mechanism also includes a second rotating shaft, a female buckle is provided at the bottom of the first rotating shaft, a male buckle matching the female buckle is provided at the top of the second rotating shaft, and a rotating mechanism is provided at the bottom of the second rotating shaft; the second rotating shaft is engaged with the female buckle provided at the bottom of the first rotating shaft through the male buckle provided at the top of the second rotating shaft.

3. The leakage current meter live detection device according to claim 2 is characterized in that: The transmission mechanism also includes a third rotating shaft, one end of the third rotating shaft is provided with a male buckle, and the other end of the third rotating shaft is provided with a female buckle. The third rotating shaft is respectively connected with the female buckle of the first rotating shaft and the male buckle of the second rotating shaft through the male buckles and female buckles provided at its two ends.

4. The leakage current meter live detection device according to claim 3 is characterized in that: The first rotating shaft, the second rotating shaft and the third rotating shaft are respectively sleeved with a first connecting rod, a second connecting rod and a third connecting rod; the bottom end of the first connecting rod is provided with an external thread; the top end of the second connecting rod is provided with an internal thread, and the bottom of the second connecting rod is provided with a rotating handle, and the rotating handle is matched and connected with the rotating mechanism provided at the bottom of the second rotating shaft; the two ends of the third connecting rod are respectively provided with an external thread and an internal thread.

5. The leakage current meter live detection device according to claim 4 is characterized in that: The first connecting rod, the second connecting rod and the third connecting rod are movably sleeved with a fixing sleeve, and the fixing sleeve is sleeved at the threaded connection position between the first connecting rod and the third connecting rod, and at the threaded connection position between the third connecting rod and the second connecting rod.

6. The leakage current meter live detection device according to claim 4, characterized in that: The first connecting rod, the second connecting rod and the third connecting rod are made of insulating material, and the first rotating shaft, the second rotating shaft and the third rotating shaft are made of insulating material.

7. The leakage current meter live detection device according to any one of claims 4 to 6, characterized in that: The outer surface of the rotating handle arranged at the bottom of the second connecting rod is provided with an anti-slip structure.

8. The leakage current meter live detection device according to claim 1, characterized in that: The display screen is arranged on the outer surface of the measuring instrument and tilted downward.

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