CN113359061B - Circuit leakage detection device - Google Patents
Circuit leakage detection device Download PDFInfo
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- CN113359061B CN113359061B CN202110673999.6A CN202110673999A CN113359061B CN 113359061 B CN113359061 B CN 113359061B CN 202110673999 A CN202110673999 A CN 202110673999A CN 113359061 B CN113359061 B CN 113359061B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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Abstract
本发明公开一种线路漏电检测装置，涉及电力检测领域。该线路漏电检测装置包括：固定条，所述固定条的内部设置有传动组件，且通过传动组件连接有活动条；固定座，所述固定座固定连接在固定条的侧壁上，所述固定座的内壁上转动连接有主轴，且所述固定座内部设置集线组件，且通过集线组件连接有第一导线和第二导线，所述固定座的另一侧固定连接有显示器，所述第一导线的端部和第二导线的端部与显示器电性连接。该线路漏电检测装置，第一导线和第二导线与铁棒和显示器之间的二次线圈中感应出电流，并在显示器上显示，从而完成对了导线的检测，且可以对装置的长度进行调节，对较高处或者较远处的导线依然可以进行测量。
The invention discloses a circuit leakage detection device, which relates to the field of electric power detection. The line leakage detection device includes: a fixing bar, a transmission component is arranged inside the fixing bar, and a movable bar is connected through the transmission component; a fixing seat, the fixing seat is fixedly connected to the side wall of the fixing bar, and the fixing A main shaft is rotatably connected to the inner wall of the seat, and a hub assembly is arranged inside the fixing seat, and a first wire and a second wire are connected through the hub assembly, and a display is fixedly connected to the other side of the fixing seat. The end of the first wire and the end of the second wire are electrically connected to the display. In the line leakage detection device, the current is induced in the secondary coil between the first wire and the second wire and the iron rod and the display, and displayed on the display, so that the detection of the wire is completed, and the length of the device can be measured. Adjustment can still be performed for higher or farther wires.
Description
Technical Field
The invention relates to the technical field of power detection equipment, in particular to a circuit leakage detection device.
Background
When the current is measured by a common ammeter, the ammeter can be connected to measure after the circuit is cut off and shut down, which is troublesome, and a normally-operated motor is not allowed to do so sometimes, so that the use of the clamp-on ammeter is more convenient, and the current can be measured without cutting off the circuit.
The clamp-on ammeter can measure a lead of a tested circuit penetrating through the iron core, the lead of the tested circuit penetrating through the iron core becomes a primary coil of the current transformer, current is induced in a secondary coil through the current, two leads need to be arranged between the clamp-on iron core and an ammeter display screen, and due to the existence of the leads, the clamp-on ammeter needs to control the opening and closing of the clamp-on iron core, so that the length of the clamp-on ammeter is generally fixed, the length of the clamp-on ammeter cannot be adjusted, and the lead at a higher position or a farther position cannot be measured, and therefore the line leakage detection device is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention discloses a circuit leakage detection device, which aims to solve the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a line leakage detection device, comprising:
the transmission assembly is arranged in the fixed strip, and the movable strip is connected with the transmission assembly;
the fixing seat is fixedly connected to the side wall of the fixing strip, the inner wall of the fixing seat is rotatably connected with the main shaft, a line concentration assembly is arranged in the fixing seat and is connected with a first conducting wire and a second conducting wire through the line concentration assembly, the other side of the fixing seat is fixedly connected with a display, and the end part of the first conducting wire and the end part of the second conducting wire are electrically connected with the display;
the support bar, support bar fixed connection is at the tip of activity strip, the inside fixedly connected with iron bar of support bar, the first arc iron of one end fixedly connected with of iron bar, the other end of iron bar rotates and is connected with second arc iron, just second arc iron is provided with the runner assembly, just the other end of first wire and the other end fixed connection of second wire, and encircle at the iron bar surface.
Preferably, drive assembly includes the threaded rod, the threaded rod rotates to be connected on the inner wall of fixed strip, the surface threaded connection of threaded rod has the nut piece, nut piece fixed connection is on the lateral wall of activity strip, just activity strip and nut piece sliding connection are on the inner wall of fixed strip.
Preferably, the transmission assembly further comprises a first bevel gear and a second bevel gear, the first bevel gear and the second bevel gear are respectively fixedly sleeved on the bottom end of the threaded rod and the outer surface of the main shaft, and the first bevel gear and the second bevel gear are in meshed connection.
Preferably, the line concentration subassembly includes first tight pulley and second tight pulley, first tight pulley and second tight pulley are all fixed the cup jointing at the surface of main shaft, first wire and second wire twine respectively at the surface of first tight pulley and second tight pulley.
Preferably, the line concentration assembly further comprises a line concentration frame, the line concentration frame is fixedly connected to the lower surface of the fixing seat, the inner wall of the line concentration frame is fixedly connected with the separation plate, and the end portions of the first lead and the second lead penetrate through the bottom wall of the separation plate and the line concentration frame and are inserted into the display.
Preferably, two positioning wheels are fixedly connected to the inner wall of the wire collecting frame, the two positioning wheels are arranged below the partition plate, and the first wire and the second wire are attached to the lower surfaces of the two positioning wheels respectively.
Preferably, the side wall of the fixing seat is fixedly connected with a handle, and the end of the main shaft penetrates through the outer wall of the fixing seat to extend outwards and is fixedly connected with a knob.
Preferably, the runner assembly is including rotating the groove, it sets up on the lateral wall of support bar to rotate the groove, it is connected with the loose axle to rotate on the inner wall in groove, the fixed cup joint of one end of second arc iron is at the surface of loose axle, just the tip of second arc iron is laminated with the tip of iron rod mutually.
Preferably, the runner assembly still includes the fixed block, fixed block fixed connection is on the outer wall of second arc iron, fixed connection has spacing rope on the lateral wall of fixed block, spacing spring has been cup jointed in the surface activity of spacing rope, fixed connection is on the lateral wall of fixed block and the inner wall in rotation groove respectively at the both ends of spacing spring, spacing rope tip runs through the outer wall of support bar and the outer wall and the spacing wheel of fixedly connected with of activity strip, the fixed cup joint of spacing wheel is at the surface of main shaft.
Preferably, the outer surface activity of spacing rope is cup jointed spacing, spacing passes the outer wall of fixed strip and outwards extends, and fixedly connected with draws the handle.
The invention discloses a line leakage detection device, which has the following beneficial effects:
1. this circuit leakage detection device, through the drive assembly who sets up, line concentration subassembly and runner assembly, induced current in the secondary coil between first wire and second wire and iron bar and the display, and show on the display, thereby the completion is to the detection of wire, until finding the electric leakage department after detecting line step by step, and can adjust the length of device, can measure the wire of higher department or more distant department still, made things convenient for the measurement personnel greatly, saved the manual strength.
2. This circuit electric leakage detection device, transmission assembly and line concentration subassembly through setting up, when increasing device length, slide because of the outside slip of activity strip, it removes towards the direction of keeping away from the support bar to have driven the fixing base, the tip of first wire and the tip of second wire encircle at the iron bar surface, make and be in the state of straining all the time between first wire and second wire and the iron bar, and the other end of first wire and the other end of second wire are piled up after scattering and are collected on the division board, thereby the effect of increasing device length has been reached, can not influence the secondary coil formation electric current effect between first wire and second wire and iron bar and the display simultaneously.
3. This circuit electric leakage detection device, transmission assembly and runner assembly through setting up, when increasing device length, slide because of the outside slip of activity strip, it removes towards the direction of keeping away from the support bar to have driven the fixing base, the other end fixed connection of spacing rope is on the fixed block, make spacing rope be in the taut state all the time, the spacing strip of below-pulling, make second arc iron rotate, make the wire that awaits measuring enter into between second arc iron and the first arc iron from second arc iron and first arc iron breach, loosen at this moment and draw the handle, make the tip of second arc iron and the tip of first arc iron offset, make second arc iron, first arc iron and iron rod cover are outside the wire that awaits measuring and form primary coil.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a split structure according to the present invention;
FIG. 3 is a schematic view of a portion of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of an internal structure of the fixing base of the present invention;
FIG. 6 is an enlarged view of portion B of FIG. 5 according to the present invention;
FIG. 7 is a schematic view of the structure of the support bar and the rotation slot of the present invention;
FIG. 8 is a schematic structural view of a support bar and a movable bar of the present invention;
FIG. 9 is a schematic view of the internal structure of the support bar of the present invention;
fig. 10 is an enlarged view of the portion C of fig. 9 according to the present invention.
In the figure: 1. a fixing strip; 101. a movable bar; 102. a threaded rod; 103. a nut block; 104. a first bevel gear; 105. a second bevel gear; 2. a fixed seat; 201. a main shaft; 202. a first fixed wheel; 203. a second fixed wheel; 204. a first conductive line; 205. a second conductive line; 206. a display; 207. a wire collecting frame; 208. a partition plate; 209. positioning wheels; 210. a handle; 211. a knob; 3. a supporting strip; 301. an iron rod; 302. a first arc-shaped iron; 303. a second arc-shaped iron; 304. a limiting rope; 305. a limiting wheel; 306. a limiting strip; 307. pulling a handle; 4. a rotating groove; 401. a movable shaft; 402. a fixed block; 403. and a limiting spring.
Detailed Description
The first embodiment is as follows:
the embodiment of the invention discloses a line leakage detection device,
referring to fig. 1, 3 and 5, including:
the device comprises a fixed strip 1, wherein a transmission assembly is arranged inside the fixed strip 1 and is connected with a movable strip 101 through the transmission assembly;
the fixing seat 2, the fixing seat 2 is fixedly connected to the side wall of the fixing strip 1, the inner wall of the fixing seat 2 is rotatably connected with a main shaft 201, the fixing seat 2 is internally provided with a line concentration assembly, the fixing seat is connected with a first conducting wire 204 and a second conducting wire 205 through the line concentration assembly, the other side of the fixing seat 2 is fixedly connected with a display 206, the end part of the first conducting wire 204 and the end part of the second conducting wire 205 are electrically connected with the display 206, when the length of the device is increased through the arranged transmission assembly and the line concentration assembly, the fixing seat 2 is driven to move towards the direction far away from the supporting bar 3 due to the outward sliding and sliding of the movable strip 101, the end part of the first conducting wire 204 and the end part of the second conducting wire 205 surround the outer surface of the iron bar 301, so that the first conducting wire 204, the second conducting wire 205 and the iron bar 301 are always in a tight state, and the other end of the first conducting wire 204 and the other end of the second conducting wire 205 are piled up on the partition plate 208 after being scattered, thereby achieving the effect of increasing the length of the device without affecting the current effect formed by the secondary coils between the first wire 204 and the second wire 205 and the iron rod 301 and the display 206;
Referring to fig. 2, the transmission assembly includes a threaded rod 102, the threaded rod 102 is rotatably connected to the inner wall of the fixing bar 1, a nut block 103 is connected to the outer surface of the threaded rod 102 in a threaded manner, the nut block 103 is fixedly connected to the side wall of the movable bar 101, and the movable bar 101 and the nut block 103 are slidably connected to the inner wall of the fixing bar 1.
Referring to fig. 3, the transmission assembly further includes a first bevel gear 104 and a second bevel gear 105, the first bevel gear 104 and the second bevel gear 105 are respectively fixedly sleeved on the bottom end of the threaded rod 102 and the outer surface of the main shaft 201, and the first bevel gear 104 and the second bevel gear 105 are in meshed connection.
Referring to fig. 3, the wire collecting assembly includes a first fixed pulley 202 and a second fixed pulley 203, the first fixed pulley 202 and the second fixed pulley 203 are both fixedly sleeved on the outer surface of the main shaft 201, middle portions of a first wire 204 and a second wire 205 are respectively and fixedly connected to the outer surfaces of the first fixed pulley 202 and the second fixed pulley 203, the first wire 204 and the second wire 205 are respectively wound on the outer surfaces of the first fixed pulley 202 and the second fixed pulley 203, two ends of the first wire 204 are wound on the outer surface of the first fixed pulley 202 in the same direction, and two ends of the second wire 205 are wound on the outer surface of the second fixed pulley 203 in the same direction.
Referring to fig. 5 and 6, the wire-collecting assembly further includes a wire-collecting frame 207, the wire-collecting frame 207 is fixedly connected to the lower surface of the fixing base 2, a partition plate 208 is fixedly connected to the inner wall of the wire-collecting frame 207, the end portions of the first wire 204 and the second wire 205 penetrate through the partition plate 208 and the bottom wall of the wire-collecting frame 207 and are inserted into the display 206, and the first wire 204 and the second wire 205 can fall on the partition plate 208 to be collected through the partition plate 208.
Two positioning wheels 209 are fixedly connected to the inner wall of the wire collecting frame 207, the two positioning wheels 209 are arranged below the partition plate 208, the first wire 204 and the second wire 205 are respectively attached to the lower surfaces of the two positioning wheels 209, and effective positioning effects are achieved on the positions of the first wire 204 and the second wire 205 through the two positioning wheels 209.
Referring to fig. 2 and 3, a handle 210 is fixedly connected to a side wall of the fixing base 2, an end of the main shaft 201 penetrates through an outer wall of the fixing base 2 to extend outwards and is fixedly connected with a knob 211, and the handle 210 is arranged to facilitate the hand-holding of the device, and the knob 211 is arranged to facilitate the rotation of the main shaft 201.
The working principle is as follows: when the length of the device needs to be increased in the using process, the main shaft 201 is driven to rotate by the rotating knob 211, and the second bevel gear 105, the first fixed wheel 202 and the second fixed wheel 203 are fixedly sleeved on the outer surface of the main shaft 201, so that the second bevel gear 105, the first fixed wheel 202 and the second fixed wheel 203 are driven to rotate simultaneously;
when the second bevel gear 105 rotates, the first bevel gear 104 is driven to rotate, so that the threaded rod 102 is driven to rotate, and the nut block 103 is driven to slide due to the threaded connection between the nut block 103 and the threaded rod 102, so that the movable strip 101 is driven to slide outwards in the fixed strip 1;
when the first fixed wheel 202 and the second fixed wheel 203 rotate, because two ends of the first conducting wire 204 are wound on the outer surface of the first fixed wheel 202 in the same direction, and two ends of the second conducting wire 205 are wound on the outer surface of the second fixed wheel 203 in the same direction, the two ends of the first conducting wire 204 and the two ends of the second conducting wire 205 are respectively scattered on the outer surface of the first fixed wheel 202 and the outer surface of the second fixed wheel 203;
the movable strip 101 slides outwards to drive the fixed seat 2 to move towards the direction far away from the supporting bar 3, the end part of the first lead 204 and the end part of the second lead 205 surround the outer surface of the iron rod 301, so that the first lead 204, the second lead 205 and the iron rod 301 are always in a tight state, and the other end of the first lead 204 and the other end of the second lead 205 are accumulated on the partition plate 208 for collection after being scattered, thereby achieving the effect of increasing the length of the device, and simultaneously not influencing the current effect formed by the first lead 204, the second lead 205, the iron rod 301 and the secondary coil between the display 206;
when the length of the device needs to be reduced, the knob 211 is rotated reversely to drive the spindle 201 to rotate reversely, and the above actions are repeated reversely, so that the movable bar 101 slides inwards in the fixed bar 1, the fixed base 2 is driven to move towards the direction of the supporting bar 3, meanwhile, two ends of the first conducting wire 204 and two ends of the second conducting wire 205 are respectively wound and gathered on the outer surface of the first fixed wheel 202 and the outer surface of the second fixed wheel 203, and the first conducting wire 204 and the second conducting wire 205 are also always in a tight state with the iron rod 301, and the first conducting wire 204 and the second conducting wire 205 on the partition plate 208 respectively move towards the outer surface of the first fixed wheel 202 and the outer surface of the second fixed wheel 203, and the current effect formed by the first conducting wire 204 and the second conducting wire 205 and the secondary coil between the iron rod 301 and the display 206 is not influenced.
Example two:
the embodiment of the invention discloses a line leakage detection device,
referring to fig. 1, 3 and 5, including:
the device comprises a fixed strip 1, a transmission assembly is arranged in the fixed strip 1, and a movable strip 101 is connected with the transmission assembly;
the fixing seat 2 is fixedly connected to the side wall of the fixing strip 1, the inner wall of the fixing seat 2 is rotatably connected with the spindle 201, a line concentration assembly is arranged inside the fixing seat 2 and is connected with a first lead 204 and a second lead 205 through the line concentration assembly, the other side of the fixing seat 2 is fixedly connected with a display 206, and the end part of the first lead 204 and the end part of the second lead 205 are electrically connected with the display 206;
the supporting strip 3, the supporting strip 3 is fixedly connected to the end portion of the movable strip 101, the inside of the supporting strip 3 is fixedly connected with an iron rod 301, one end of the iron rod 301 is fixedly connected with a first arc iron 302, the other end of the iron rod 301 is rotatably connected with a second arc iron 303, the second arc iron 303 is provided with a rotating assembly, the other end of the first lead 204 is fixedly connected with the other end of the second lead 205 and surrounds the outer surface of the iron rod 301, through the arranged transmission assembly and rotating assembly, when the length of the device is increased, the movable strip 101 slides outwards to drive the fixing seat 2 to move towards the direction far away from the supporting strip 3, the other end of the limiting rope 304 is fixedly connected to the fixing block 402, the limiting rope 304 is always in a tight state, the limiting strip 306 is pulled downwards, the second arc iron 303 rotates, so that the lead to be tested enters between the second arc iron 303 and the first arc iron 302 from the gap between the second arc iron 303 and the first arc iron 302, at this time, the pull handle 307 is loosened, so that the end of the second arc iron 303 is abutted against the end of the first arc iron 302, and the second arc iron 303, the first arc iron 302 and the iron rod 301 are sleeved outside the wire to be measured and form a primary coil.
Referring to fig. 2, the transmission assembly includes a threaded rod 102, the threaded rod 102 is rotatably connected to the inner wall of the fixed bar 1, a nut block 103 is connected to the outer surface of the threaded rod 102 through a thread, the nut block 103 is fixedly connected to the side wall of the movable bar 101, and the movable bar 101 and the nut block 103 are slidably connected to the inner wall of the fixed bar 1.
Referring to fig. 3, the transmission assembly further includes a first bevel gear 104 and a second bevel gear 105, the first bevel gear 104 and the second bevel gear 105 are fixedly sleeved on the bottom end of the threaded rod 102 and the outer surface of the main shaft 201, respectively, and the first bevel gear 104 and the second bevel gear 105 are in meshed connection.
Referring to fig. 2 and 3, a handle 210 is fixedly connected to a side wall of the fixing base 2, and an end of the spindle 201 passes through an outer wall of the fixing base 2 to extend outward and is fixedly connected with a knob 211.
Referring to fig. 7-10, the rotating assembly includes a rotating groove 4, the rotating groove 4 is disposed on the side wall of the supporting bar 3, the inner wall of the rotating groove 4 is rotatably connected with a movable shaft 401, one end of the second arc-shaped iron 303 is fixedly sleeved on the outer surface of the movable shaft 401, and the end of the second arc-shaped iron 303 is attached to the end of the iron rod 301.
The rotating assembly further comprises a fixing block 402, the fixing block 402 is fixedly connected to the outer wall of the second arc-shaped iron 303, a limiting rope 304 is fixedly connected to the side wall of the fixing block 402, a limiting spring 403 is sleeved on the outer surface of the limiting rope 304 in a movable mode, two ends of the limiting spring 403 are respectively fixedly connected to the side wall of the fixing block 402 and the inner wall of the rotating groove 4, the end portion of the limiting rope 304 penetrates through the outer wall of the supporting bar 3 and the outer wall of the movable bar 101 and is fixedly connected with a limiting wheel 305, and the limiting wheel 305 is fixedly sleeved on the outer surface of the main shaft 201.
Referring to fig. 4 and 5, the outer surface of the limiting rope 304 is movably sleeved with a limiting strip 306, the limiting strip 306 penetrates through the outer wall of the fixing strip 1 and extends outwards, and the limiting rope 304 is always in a tight state, so that the position of the limiting strip 306 is limited, the limiting strip 306 is slidably connected with the outer wall of the fixing strip 1, the position of the limiting strip 306 cannot move randomly, and the limiting strip 306 is pulled downwards through the arranged pulling handle 307.
The working principle is as follows: in the using process, the rotating knob 211 drives the main shaft 201 to rotate, and the second bevel gear 105 and the limiting wheel 305 are driven to simultaneously start to rotate as the second bevel gear 105 and the limiting wheel 305 are fixedly sleeved on the outer surface of the main shaft 201;
when the second bevel gear 105 rotates, the first bevel gear 104 is driven to rotate, so that the threaded rod 102 is driven to rotate, the nut block 103 is driven to slide, and the movable strip 101 is driven to slide outwards in the fixed strip 1;
when the limiting wheel 305 rotates, the limiting rope 304 wound on the outer surface of the limiting wheel 305 is scattered on the outer surface of the limiting wheel 305, the movable strip 101 slides outwards, the fixed seat 2 is driven to move towards the direction far away from the supporting strip 3, the other end of the limiting rope 304 is fixedly connected to the fixed block 402, and the limiting rope 304 is always in a tight state;
until the first arc iron 302 and the second arc iron 303 move to proper positions, when a lead to be measured can be measured, the pull handle 307 is pulled downwards, the limiting strip 306 is movably sleeved on the outer surface of the limiting rope 304, so that the limiting rope 304 moves downwards, and one end of the limiting rope 304 cannot move around the limiting wheel 305, so that the limiting rope 304 slides relative to the limiting strip 306 and simultaneously exerts tension on the fixing block 402, the second arc iron 303 is driven to rotate relative to the iron rod 301 through the movable shaft 401, the limiting spring 403 is compressed, and the limiting spring 403 is in a compressed state;
when the second arc iron 303 rotates, the end of the second arc iron 303 is separated from the end of the first arc iron 302, at this time, the second arc iron 303 and the first arc iron 302 can move towards the wire to be tested, so that the wire to be tested enters between the second arc iron 303 and the first arc iron 302 from the gap between the second arc iron 303 and the first arc iron 302, at this time, the pull handle 307 is released, the compressed limiting spring 403 rebounds to push the second arc iron 303 to rotate, so that the end of the second arc iron 303 is abutted against the end of the first arc iron 302, and the second arc iron 303, the first arc iron 302 and the iron rod 301 are sleeved outside the wire to be tested and form a primary coil;
after the measurement is finished, the pull handle 307 is pulled downwards again, the above actions are repeated, the end part of the second arc iron 303 is separated from the end part of the first arc iron 302, and then the second arc iron 303 and the first arc iron 302 can be moved out of the wire to be measured.
In summary, the following steps: when the length of the device needs to be increased in the using process, the main shaft 201 is driven to rotate by the rotating knob 211, and the second bevel gear 105, the first fixed wheel 202, the second fixed wheel 203 and the limiting wheel 305 are fixedly sleeved on the outer surface of the main shaft 201, so that the second bevel gear 105, the first fixed wheel 202, the second fixed wheel 203 and the limiting wheel 305 are driven to rotate simultaneously;
when the second bevel gear 105 rotates, the first bevel gear 104 is driven to rotate, so that the threaded rod 102 is driven to rotate, and the nut block 103 is driven to slide due to the threaded connection between the nut block 103 and the threaded rod 102, so that the movable strip 101 is driven to slide outwards in the fixed strip 1;
when the first fixed wheel 202 and the second fixed wheel 203 rotate, because two ends of the first conducting wire 204 are wound on the outer surface of the first fixed wheel 202 in the same direction, two ends of the second conducting wire 205 are wound on the outer surface of the second fixed wheel 203 in the same direction, so that two ends of the first conducting wire 204 and two ends of the second conducting wire 205 are respectively scattered on the outer surface of the first fixed wheel 202 and the outer surface of the second fixed wheel 203, the fixing seat 2 is driven to move towards the direction far away from the supporting bar 3 due to the outward sliding of the movable bar 101, the end of the first conducting wire 204 and the end of the second conducting wire 205 are wound on the outer surface of the iron bar 301, so that the first conducting wire 204, the second conducting wire 205 and the iron bar 301 are always in a tight state, and the other end of the first conducting wire 204 and the other end of the second conducting wire 205 are accumulated on the separation plate 208 after scattering, thereby achieving the effect of increasing the length of the device, and simultaneously not affecting the secondary coil between the first conducting wire 204 and the second conducting wire 205, the iron bar 301 and the display 206 Forming a current effect;
when the limiting wheel 305 rotates, the limiting rope 304 wound on the outer surface of the limiting wheel 305 is scattered on the outer surface of the limiting wheel 305, the movable strip 101 slides outwards, the fixed seat 2 is driven to move towards the direction far away from the supporting strip 3, the other end of the limiting rope 304 is fixedly connected to the fixed block 402, and the limiting rope 304 is always in a tight state;
until the first arc iron 302 and the second arc iron 303 move to proper positions, when a lead to be measured can be measured, the pull handle 307 is pulled downwards, the limiting strip 306 is movably sleeved on the outer surface of the limiting rope 304, so that the limiting rope 304 moves downwards, and one end of the limiting rope 304 cannot move around the limiting wheel 305, so that the limiting rope 304 slides relative to the limiting strip 306 and simultaneously exerts tension on the fixing block 402, the second arc iron 303 is driven to rotate relative to the iron rod 301 through the movable shaft 401, the limiting spring 403 is compressed, and the limiting spring 403 is in a compressed state;
when the second arc iron 303 rotates, the end of the second arc iron 303 is separated from the end of the first arc iron 302, at this time, the second arc iron 303 and the first arc iron 302 can move towards the wire to be tested, so that the wire to be tested enters between the second arc iron 303 and the first arc iron 302 from the gap between the second arc iron 303 and the first arc iron 302, at this time, the pull handle 307 is released, the compressed limiting spring 403 rebounds to push the second arc iron 303 to rotate, so that the end of the second arc iron 303 is abutted against the end of the first arc iron 302, and the second arc iron 303, the first arc iron 302 and the iron rod 301 are sleeved outside the wire to be tested and form a primary coil;
when the length of the device needs to be reduced, the knob 211 is rotated reversely, the main shaft 201 is driven to rotate reversely, and the actions are repeated reversely, so that the movable strip 101 slides inwards in the fixed strip 1, and the fixed seat 2 is driven to move towards the direction of the supporting strip 3;
meanwhile, two ends of the first lead 204 and two ends of the second lead 205 are respectively wound and gathered on the outer surface of the first fixed wheel 202 and the outer surface of the second fixed wheel 203, so that the first lead 204 and the second lead 205 are always in a tight state with the iron rod 301, the first lead 204 and the second lead 205 on the separation plate 208 respectively move towards the outer surface of the first fixed wheel 202 and the outer surface of the second fixed wheel 203, and the current effect formed by the first lead 204 and the second lead 205, the iron rod 301 and the secondary coil between the display 206 is not influenced;
meanwhile, the limiting rope 304 is wound and gathered on the outer surface of the limiting wheel 305, so that the limiting rope 304 is always in a tight state, the second arc-shaped iron 303 can be driven to rotate when the pull handle 307 is pulled downwards, the second arc-shaped iron 303 and the first arc-shaped iron 302 are not influenced to be sleeved on the wire to be tested, and the second arc-shaped iron 303, the first arc-shaped iron 302 and the iron rod 301 are sleeved outside the wire to be tested to form a primary coil;
currents are induced in secondary coils between the first lead 204 and the second lead 205 and between the iron rod 301 and the display 206 and are displayed on the display 206, so that detection of the leads is completed, the leads are detected one by one until electric leakage positions are found, the length of the device can be adjusted, the leads at higher positions or far positions can still be measured, detection personnel are greatly facilitated, and labor intensity is saved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
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| CN105044435A (en) * | 2015-07-31 | 2015-11-11 | 国网山东五莲县供电公司 | Telescopic clamp measuring ammeter |
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