Automatic detection device of electric leakage sensor

Abstract

The invention relates to the technical field of detection devices, and discloses an automatic detection device of an electric leakage sensor, by arranging structures such as a fixing hole, a cross bar, a sliding hole, a wafer, a pin column and a connecting rod, stable clamping of a wire is realized, a sliding column is pulled out, so that a clamping tooth is separated from a groove hole of a clamping plate, and then the sliding column is slid to be located in the sliding hole; the ends of the connecting rods are changed along with the synchronous positions of the sliding columns, the intersection points of the connecting rods can synchronously push or pull the pin columns to synchronously move, the distance between the wafers is adjusted, the wafers synchronously and oppositely move, and when the wafers oppositely slide, the gaps between the wafers and the fixing holes are gradually reduced to clamp a wire, and after clamping is completed, the connecting rods are driven to rotate. The sliding columns are pressed inwards again, the clamping teeth are inserted into the inner walls of the groove holes of the clamping plates again, the positions of the sliding columns and the connecting rods are fixed, and after the positions of the sliding columns and the connecting rods are fixed, stable clamping of the wire is achieved.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, and in particular to an automatic detection device for a leakage current sensor. Background Technology

[0002] A leakage current sensor is a device that converts measured AC micro-currents or DC isolated currents into standard analog signals or RS485 digital signals, such as DC current and DC voltage, based on the electromagnetic isolation and magnetic modulation working principle of a current transformer. It is widely used for real-time monitoring of the insulation status of busbars and branch circuits in DC and AC power supply systems.

[0003] In the existing technology, there are certain shortcomings in the production and testing of leakage current sensors. For example, when fixing the positive and negative wires of the leakage current sensor, the wires are usually automatically centered and clamped by sliding a symmetrical arc-shaped slider. However, the positive and negative wires are squeezed and stuck together by the arc-shaped slider, making it impossible to separate them. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatic detection device for leakage current sensors, which has the advantage of stable clamping and solves the problems mentioned in the background.

[0005] The present invention provides the following technical solution: an automatic detection device for a leakage current sensor, comprising a housing, mounting blocks at each of the four corners of the housing, an external insertion block on one side of the housing, a fixing hole in the middle of the housing, horizontal bars fixedly installed at both ends of the fixing hole, sliding holes around the fixing hole on the surface of the housing, circular grooves in the bottom wall of the sliding holes, fixing devices symmetrically and slidably installed inside the horizontal bars, and adjusting devices slidably installed inside the sliding holes.

[0006] With the above structural setup, the sliding column is positioned inside the sliding hole, causing the sliding column to move the connecting rod. The pin is pushed towards the center by the connecting rod, causing the disc to clamp the wire. Then, by pressing the sliding column, the clasp is re-inserted into the slot of the clamping plate, thus fixing the position of the sliding column and clamping the wire between the disc and the fixing hole.

[0007] Preferably, the fixing device includes circular pieces arranged linearly, with grooves formed between the surfaces of the circular pieces, and pins fixedly installed inside the grooves. The circular pieces and the pins are fixedly connected, and the pins are slidably disposed inside the crossbar.

[0008] With the above-mentioned structure, the opposing sliding between the discs is controlled by the adjustment device, so that the gap between the discs and the fixing hole gradually decreases, thereby clamping the wire and making it convenient for users to test the leakage current sensor through the wire.

[0009] Preferably, the adjusting device includes a sliding column and a connecting rod. The sliding column is slidably installed between the sliding hole and the inside of the circular groove. The size and shape of the end of the sliding column are adapted to the circular groove. The connecting rod is movably sleeved on the outer ring of the sliding column, and the other end of the connecting rod is rotatably sleeved inside the pin.

[0010] With the above structural design, the position of the connecting rod is changed by the sliding pin, so that the connecting rod is located inside the pin and pushes the pin to slide, which in turn drives the disc to slide in opposite directions to clamp the wire.

[0011] Preferably, the outer ring of the locking tooth is provided with a shim on one side of the connecting rod, and the shim is adapted to the shape and size of the sliding hole. The adjusting device is fixedly installed with a locking plate on the inner wall of the sliding hole and is located on one side of the shim. The surface of the locking plate is provided with slots evenly arranged in a linear array. The outer ring of the sliding column is symmetrically provided with locking teeth, and the locking teeth are adapted to the shape and structure of the slots.

[0012] With the above structural setup, after adjusting the wire clamping, pressing the sliding pin causes the locking teeth to re-insert into the slot of the locking plate, thus fixing the position of the sliding pin and simultaneously fixing the position of the connecting rod, thereby ensuring stable clamping of the wire.

[0013] The present invention has the following effects: 1. The automatic detection device of this leakage current sensor achieves stable clamping of the wire by setting up structures such as fixing holes, horizontal bars, sliding holes, discs, pins, and connecting rods. When the discs slide in opposite directions, the gap between the discs and the fixing holes gradually decreases, thus clamping the wire. After clamping is completed, the sliding pin is pressed inward again, so that the jaws are re-inserted into the inner wall of the slot of the clamping plate, thereby fixing the position of the sliding pin and the connecting rod. When the position of the sliding pin and the connecting rod is fixed, the wire is stably clamped, achieving a stable clamping effect.

[0014] 2. The automatic detection device of this leakage current sensor, through the setting of circular plates, pins, sliding pins, connecting rods, clamping plates, and teeth, realizes the adjustment and clamping of wires of different diameters. Pulling the sliding pin outward causes the teeth to disengage from the slots of the clamping plate. Then, the sliding pin is positioned inside the sliding hole, causing the end of the connecting rod to change position synchronously with the sliding pin. Furthermore, since the intersection of the connecting rods will synchronously push or pull the pin to move synchronously, the spacing between the circular plates is adjusted, causing the circular plates to move synchronously in opposite directions and squeezing and clamping the wires, thus achieving the effect of clamping wires of different diameters. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fixing device structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the shell of the present invention; Figure 4 This is an exploded view of the structure of the adjustment device of the present invention.

[0016] In the diagram: 1. Housing; 11. Mounting block; 12. External insertion block; 13. Fixing hole; 14. Horizontal bar; 15. Sliding hole; 16. Circular groove; 2. Fixing device; 21. Circular piece; 22. Sliding groove; 23. Pin; 3. Adjusting device; 31. Sliding column; 32. Connecting rod; 33. Shim; 34. Clamping plate; 35. Clamping tooth. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-4 An automatic detection device for a leakage current sensor includes a housing 1. Mounting blocks 11 are provided at each of the four corners of the housing 1. An external plug block 12 is provided on one side of the housing 1. A fixing hole 13 is provided in the middle of the housing 1. A horizontal bar 14 is fixedly installed at both ends of the fixing hole 13. Sliding holes 15 are provided around the fixing hole 13 on the surface of the housing 1. A circular groove 16 is provided on the bottom wall of the sliding hole 15. Fixing devices 2 are symmetrically slidably installed inside the horizontal bars 14. Adjusting devices 3 are slidably installed inside the sliding holes 15.

[0019] This device, through the cooperation between the fixing device 2 and the adjusting device 3, achieves the positional fixation of wires of different diameters, and fixes them separately. In use, the positive and negative wires are inserted separately between the fixing device 2 and the housing 1, so that the positive and negative wires are respectively located in the upper and lower gaps between the fixing device 2 and the fixing hole 13. Then, by synchronously pulling the sliding column 31, the clamping teeth 35 are disengaged from the slots of the clamping plate 34. Then, the sliding column 31 is moved to the position inside the sliding hole 15, so that the sliding column 31 drives the connecting rod 32 to move. The pin 23 is pushed towards the center by the connecting rod 32, which drives the disc 21 to clamp the wire. Then, by pressing the sliding column 31, the clamping teeth 35 are reinserted into the slots of the clamping plate 34, thus fixing the position of the sliding column 31 and clamping the wire between the disc 21 and the fixing hole 13.

[0020] Please see Figures 1-2 The fixing device 2 includes circular pieces 21 arranged linearly. A groove 22 is provided between the surfaces of the circular pieces 21. A pin 23 is fixedly installed inside the groove 22. The circular pieces 21 and the pin 23 are fixedly connected. The pin 23 is slidably disposed inside the horizontal bar 14.

[0021] By adjusting the device 3 to control the opposing sliding between the discs 21, the gap between the discs 21 and the fixing hole 13 gradually decreases, thereby clamping the wire and making it convenient for users to test the leakage current sensor through the wire.

[0022] Please see Figures 1-4 The adjusting device 3 includes a sliding column 31 and a connecting rod 32. The sliding column 31 is slidably installed between the sliding hole 15 and the circular groove 16. The size and shape of the end of the sliding column 31 are adapted to the circular groove 16. The connecting rod 32 is movably sleeved on the outer ring of the sliding column 31. The other end of the connecting rod 32 is rotatably sleeved inside the pin 23.

[0023] The adjusting device 3 changes the position of the connecting rod 32 by sliding the sliding column 31 inside the sliding hole 15, so that the connecting rod 32 is inside the pin 23 and pushes the pin 23 to slide, and drives the disc 21 to slide in opposite directions to clamp the wire.

[0024] Please see Figures 1-4 The outer ring of the locking tooth 35 is provided with a shim 33 on one side of the connecting rod 32. The shim 33 is adapted to the shape and size of the sliding hole 15 so that the connecting rod 32 can slide vertically. The adjusting device 3 is fixedly installed with a locking plate 34 on the inner wall of the sliding hole 15 and is located on one side of the shim 33. The surface of the locking plate 34 is evenly provided with slots in a linear array. The outer ring of the sliding column 31 is symmetrically provided with locking teeth 35. The locking teeth 35 are adapted to the shape and structure of the slots.

[0025] By pulling the slide column 31, the clamping tooth 35 is moved out of the slot of the clamping plate 34. Then, the position of the slide column 31 is slid, so that the slide column 31 slides up and down inside the sliding hole 15. After adjusting the clamping of the wire, the slide column 31 is pressed, so that the clamping tooth 35 is reinserted into the slot of the clamping plate 34, thereby fixing the position of the slide column 31. At the same time, the position of the connecting rod 32 is also fixed, so that the wire is stably clamped.

[0026] Working principle: In use, the wires of the leakage current sensor are separated into positive and negative terminals and inserted into the upper and lower gaps between the disc 21 and the fixing hole 13 respectively, achieving the effect of separate placement and synchronous clamping. Then, the sliding column 31 is pulled outward, causing the clasp 35 to disengage from the slot of the clamping plate 34. The sliding column 31 is then slid to the position inside the sliding hole 15, causing the end of the connecting rod 32 to change position synchronously with the sliding column 31. Since the intersection of the connecting rod 32 will synchronously push or pull the pin 23 to move synchronously, the spacing between the discs 21 is adjusted, causing the discs 21 to move synchronously in opposite directions. When the discs 21 slide in opposite directions, the gap between the disc 21 and the fixing hole 13 gradually decreases, thus clamping the wires. After clamping is completed, the sliding column 31 is pressed inward again, causing the clasp 35 to re-insert into the inner wall of the slot of the clamping plate 34, thus fixing the position of the sliding column 31 and the connecting rod 32. When the position of the sliding column 31 and the connecting rod 32 is fixed, the wires are stably clamped.

Claims

1. An automatic detection device for a leakage current sensor, comprising a housing (1), characterized in that: The housing (1) has mounting blocks (11) at each of its four corners, an external plug (12) on one side of the housing (1), a fixing hole (13) in the middle of the housing (1), a horizontal bar (14) fixedly installed at both ends of the fixing hole (13), a sliding hole (15) in the surface of the housing (1) around the fixing hole (13), a circular groove (16) in the bottom wall of the sliding hole (15), a fixing device (2) symmetrically slidably installed inside the horizontal bar (14), and an adjusting device (3) slidably installed inside the sliding hole (15).

2. The automatic detection device for a leakage current sensor according to claim 1, characterized in that: The fixing device (2) includes a circular piece (21) arranged in a linear manner. A groove (22) is provided between the surfaces of the circular pieces (21). A pin (23) is fixedly installed inside the groove (22). The circular pieces (21) and the pin (23) are fixedly connected. The pin (23) is slidably disposed inside the crossbar (14).

3. The automatic detection device for a leakage current sensor according to claim 2, characterized in that: The adjustment device (3) includes a sliding column (31) and a connecting rod (32). The sliding column (31) is slidably installed between the sliding hole (15) and the circular groove (16). The size and shape of the end of the sliding column (31) are adapted to the circular groove (16). The connecting rod (32) is movably sleeved on the outer ring of the sliding column (31). The other end of the connecting rod (32) is rotatably sleeved inside the pin (23).

4. The automatic detection device for a leakage current sensor according to claim 3, characterized in that: The outer ring of the locking tooth (35) is provided with a shim (33) on one side of the connecting rod (32). The shim (33) is adapted to the shape and size of the sliding hole (15). The adjusting device (3) is fixedly installed with a locking plate (34) on the inner wall of the sliding hole (15) and is located on one side of the shim (33). The surface of the locking plate (34) is uniformly provided with slots in a linear array. The outer ring of the sliding column (31) is symmetrically provided with locking teeth (35). The locking teeth (35) are adapted to the shape and structure of the slots.

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