A portable secondary circuit alignment instrument

Abstract

This utility model discloses a portable secondary circuit calibration instrument, including a screwdriver, a winding mechanism, and a first and second wire mounted on the winding mechanism. The screwdriver includes a base, with a handle fixedly sleeved at one end of the base. A battery is fixedly installed inside the handle, and a conductive nut and a charging interface are fixedly installed at the tail end of the handle. A switch is installed through the outer wall of the handle, and a sound-transmitting hole is provided through the tail end of the handle. In use, after clamping the alligator clip onto one end of the secondary circuit to be tested, the screwdriver bit touches the other end of the secondary circuit to be tested, thus testing the secondary circuit. When the secondary circuit is conductive, the LED strip will light up, and the buzzer will sound to provide an audible and visual reminder, facilitating the operator's judgment. Furthermore, the combination of the regular hexagonal prism and the regular hexagonal hole allows for the installation of different types of screwdriver bits on the sleeve, making it more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of circuit testing technology, specifically a portable secondary circuit alignment instrument. Background Technology

[0002] During the commissioning of power projects such as power plants or substations, it is necessary to inspect the secondary circuits. Currently, the inspection of secondary circuits is mostly done using a multimeter or a simple calibration lamp. If wiring modifications or disassembly are encountered during the inspection process, the tool must be switched to a screwdriver for modification, and then switched back to the calibration lamp for inspection. Switching back and forth between tools makes the inspection of secondary circuits cumbersome and reduces the efficiency of testing.

[0003] A search revealed that patent CN223326273U discloses a combined secondary circuit verification screwdriver. By combining a screwdriver with a calibration lamp, the circuit can be checked directly by contacting the terminal block through the screwdriver handle during secondary circuit inspection. If wiring modifications or disassembly are required, they can be made directly with the screwdriver, eliminating the need for frequent tool switching during circuit inspection and effectively improving testing efficiency. At the same time, the wires are equipped with a storage component for convenient winding and storage, preventing wire tangling and facilitating organization and storage.

[0004] While the above solution allows for direct circuit inspection via the screwdriver contacting the terminal block by setting up a screwdriver, wire, storage assembly, and grounding clamp, the wire is directly fixed to the handle cap at the end of the screwdriver. When using the screwdriver to install or remove screws, the wire and storage assembly interfere with the screwdriver's rotation. Furthermore, the screwdriver's guide rod cannot be replaced, making it inconvenient to install or remove screws of different models. This solution needs improvement. Utility Model Content

[0005] The purpose of this invention is to provide a portable secondary circuit alignment instrument to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A portable secondary circuit alignment instrument includes a screwdriver, a winding mechanism, and a first and second wire mounted on the winding mechanism. The screwdriver includes a base, with a handle fixedly sleeved at one end of the base. A battery is fixedly installed inside the handle. A conductive nut and a charging interface are fixedly installed at the tail end of the handle. A switch is installed through the outer wall of the handle. A sound-permeable hole is provided through the tail end of the handle. A buzzer is installed inside the handle at a position corresponding to the sound-permeable hole. A straight rod is fixedly installed at the other end of the base. A sleeve for mounting a screwdriver bit is fixedly connected to the end of the straight rod away from the base. One end of the screwdriver bit is hexagonal prism-shaped. The end face of the sleeve has an opening adapted to the screwdriver bit. The base has a regular hexagonal hole, and an annular groove is formed on its outer peripheral wall. An LED light strip is installed in the annular groove. The winding mechanism includes a connecting rod. A handle is fixedly installed on one side of the outer wall of the connecting rod, and a conductive shaft is fixedly installed on the other side of the outer wall of the connecting rod. A winding drum is rotatably sleeved on the outer wall of the conductive shaft. A rotating conductive mechanism is provided inside the winding drum. One end of the first wire is installed on the winding drum, and the second wire is installed on the connecting rod. One end of the second wire is fixedly connected to an alligator clip, and the other end of the second wire is electrically connected to the first wire through the rotating conductive mechanism. The other end of the first wire is fixedly connected to a conductive screw, and the conductive screw is adapted to a conductive nut.

[0008] As a further embodiment of this utility model: a light-diffusing plate is fixedly installed at the opening of the annular groove, and a wire-passing hole is provided on the base, and the annular groove is connected to the interior of the handle through the wire-passing hole.

[0009] As a further embodiment of this utility model, a magnet is fixedly embedded inside the sleeve.

[0010] As a further embodiment of this utility model: the winding drum includes a first turntable rotatably sleeved on a conductive shaft, a connecting tube and a second turntable, one end of the connecting tube is fixedly connected to the first turntable, and the other end of the connecting tube is fixedly connected to the second turntable by a screw, and the first wire is threaded and installed on the connecting tube.

[0011] As a further embodiment of this utility model: the rotating conductive mechanism includes a conductive ring located inside the connecting tube, the conductive shaft passing through the conductive ring, the conductive ring being fixedly connected to the first turntable, the first wire being fixedly connected to the conductive ring, the second wire being fixedly connected to the conductive shaft, and a plurality of blind holes being opened inside the conductive ring, with springs and carbon brushes arranged inside and outside the blind holes.

[0012] As a further embodiment of this utility model: an end sleeve is fitted at the end of the conductive shaft away from the connecting rod; the first turntable, the connecting tube, and the second turntable are located between the connecting rod and the end sleeve; the end sleeve is detachably connected to the conductive shaft by multiple screws; a mounting base is fixedly connected to the outer wall of the end sleeve; a pressure plate is slidably mounted on the mounting base facing the outer wall of the second turntable via a groove; a rubber sheet is fixedly provided on the pressure plate facing the outer wall of the second turntable; a hand-tightening bolt is installed on the outer wall of the mounting base through a threaded hole; the threaded end of the hand-tightening bolt is located in the groove.

[0013] As a further improvement of this utility model: a wire ring is fixedly installed on the outer wall of the connecting rod, and the first wire passes through the wire ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In use, this invention allows for the electrical connection of a first wire to a screwdriver via the engagement of a conductive screw and a conductive nut. Then, a winding drum is rotated along the conductive shaft to unwind the first wire to an appropriate length. The alligator clip is then held onto one end of the secondary circuit to be tested. The screwdriver bit is then used to touch the other end of the secondary circuit to perform the test. When the secondary circuit is conductive, the LED strip will light up, and a buzzer will sound, providing an audible and visual alert for easy identification by the operator. Furthermore, the engagement of the hexagonal prism and hexagonal hole allows for the installation of different types of screwdriver bits on the sleeve, making it more convenient to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a portable secondary circuit alignment instrument.

[0017] Figure 2 This is a cross-sectional view of a screwdriver used in a portable secondary circuit alignment instrument.

[0018] Figure 3 This is a schematic diagram of the connecting tube in a portable secondary circuit alignment instrument.

[0019] Figure 4 This is a cross-sectional schematic diagram of the winding mechanism in a portable secondary loop alignment instrument.

[0020] The components include: base 1, straight rod 2, sleeve 3, magnet 4, bit 5, annular groove 6, LED light strip 7, light diffuser 8, handle 9, battery 10, conductive nut 11, buzzer 12, sound-permeable hole 13, charging interface 14, switch 15, connecting rod 16, handle 17, conductive shaft 18, first turntable 19, connecting pipe 20, second turntable 21, first wire 22, conductive ring 23, blind hole 24, spring 25, carbon brush 26, second wire 27, alligator clip 28, wire ring 29, conductive screw 30, end sleeve 31, mounting base 32, hand-tightening bolt 33, groove 34, pressure plate 35, and rubber sheet 36. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 In this embodiment of the utility model, a portable secondary circuit alignment instrument includes a screwdriver, a winding mechanism, and a first wire 22 and a second wire 27 mounted on the winding mechanism. The screwdriver includes a base 1, with a handle 9 fixedly sleeved at one end of the base 1. A battery 10 is fixedly installed inside the handle 9. A conductive nut 11 and a charging interface 14 are fixedly installed at the tail end of the handle 9. A switch 15 is installed through the outer wall of the handle 9. A sound-permeable hole 13 is provided through the tail end of the handle 9. A buzzer 12 is installed inside the handle 9 at a position corresponding to the sound-permeable hole 13. A straight rod 2 is fixedly installed at the other end of the base 1. A sleeve 3 for mounting a screwdriver bit 5 is fixedly connected to the end of the straight rod 2 away from the base 1. One end of the screwdriver bit 5 is a regular hexagonal prism. The end face of the sleeve 3 has an opening for mounting the screwdriver bit 5. The base 1 has a matching hexagonal hole. An annular groove 6 is formed on the outer peripheral wall of the base 1. An LED light strip 7 is installed in the annular groove 6. The winding mechanism includes a connecting rod 16. A handle 17 is fixedly installed on one side of the outer wall of the connecting rod 16. A conductive shaft 18 is fixedly installed on the other side of the outer wall of the connecting rod 16. A winding drum is rotatably sleeved on the outer wall of the conductive shaft 18. A rotating conductive mechanism is provided inside the winding drum. One end of the first wire 22 is installed on the winding drum. The second wire 27 is installed on the connecting rod 16. One end of the second wire 27 is fixedly connected to an alligator clip 28. The other end of the second wire 27 is electrically connected to the first wire 22 through the rotating conductive mechanism. The other end of the first wire 22 is fixedly connected to a conductive screw 30. The conductive screw 30 is compatible with a conductive nut 11.

[0023] By adopting the above-mentioned solution, this utility model allows for the electrical connection of the first wire 22 to the screwdriver through the cooperation of the conductive screw 30 and the conductive nut 11. Then, the winding drum is rotated along the conductive shaft 18 to unwind the first wire 22 to an appropriate length. The alligator clip 28 is then clamped onto one end of the secondary circuit to be tested. The screwdriver bit 5 is then used to touch the other end of the secondary circuit to be tested, thus enabling the secondary circuit to be tested. When the secondary circuit is conductive, the LED strip 7 will light up, and the buzzer 12 will sound, providing an audible and visual reminder for easy identification by the operator. Furthermore, the combination of the regular hexagonal prism and the regular hexagonal hole allows for the installation of different types of screwdriver bits on the sleeve 3, making it more convenient to use.

[0024] Specific combination Figure 2 In one embodiment of the present invention, a light-diffusing plate 8 is fixedly installed at the opening of the annular groove 6, and a wire hole is provided on the base 1. The annular groove 6 is connected to the interior of the handle 9 through the wire hole.

[0025] Specific combination Figure 2 In one embodiment of this utility model, a magnet 4 is fixedly embedded inside the sleeve 3 to ensure the stability of the bit installed inside the sleeve 3.

[0026] Specifically, in conjunction with 1, Figure 3 and Figure 4 In one embodiment of the present invention, the winding drum includes a first turntable 19 rotatably sleeved on a conductive shaft 18, a connecting tube 20 and a second turntable 21. One end of the connecting tube 20 is fixedly connected to the first turntable 19, and the other end of the connecting tube 20 is fixedly connected to the second turntable 21 by screws. The first wire 22 is installed through the connecting tube 20.

[0027] Furthermore, the rotating conductive mechanism includes a conductive ring 23 located inside the connecting tube 20, the conductive shaft 18 passing through the conductive ring 23, the conductive ring 23 being fixedly connected to the first turntable 19, the first wire 22 being fixedly connected to the conductive ring 23, the second wire 27 being fixedly connected to the conductive shaft 18, and a plurality of blind holes 24 being provided inside the conductive ring 23, with springs 25 and carbon brushes 26 arranged inside and outside the blind holes 24.

[0028] By using the spring 25 and the carbon brush 26, the conductive shaft 18 and the conductive ring 23 can be kept electrically connected, thereby ensuring that the first wire 22 and the second wire 27 can maintain a stable electrical connection when the winding drum rotates on the conductive shaft 18.

[0029] Specific combination Figure 1 and Figure 4In one embodiment of this utility model, an end sleeve 31 is fitted onto the end of the conductive shaft 18 away from the connecting rod 16. The first turntable 19, the connecting pipe 20, and the second turntable 21 are located between the connecting rod 16 and the end sleeve 31. The end sleeve 31 is detachably connected to the conductive shaft 18 by a plurality of screws. A mounting base 32 is fixedly connected to the outer wall of the end sleeve 31. A pressure plate 35 is slidably mounted on the mounting base 32 facing the outer wall of the second turntable 21 through a groove 34. A rubber sheet 36 is fixedly provided on the pressure plate 35 facing the outer wall of the second turntable 21. A hand-tightening bolt 33 is installed on the outer wall of the mounting base 32 through a threaded hole. The threaded end of the hand-tightening bolt 33 is located in the groove 34.

[0030] By tightening the hand-tightening bolt 33 on the mounting base 32, the pressure plate 35 can be pushed, causing the rubber sheet 36 to press against the second turntable 21, thereby locking the take-up drum onto the conductive shaft 18.

[0031] Specific combination Figure 1 , Figure 3 and Figure 4 In one embodiment of the present invention, a wire ring 29 is fixedly installed on the outer wall of the connecting rod 16, and the first wire 22 passes through the wire ring 29 to improve the stability of the first wire 22 during winding and unwinding.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable secondary circuit line tester, characterized by: The screwdriver includes a screwdriver and a winding mechanism, and a first wire (22) and a second wire (27) mounted on the winding mechanism. The screwdriver includes a base (1), one end of which is fixedly fitted with a handle (9). A battery (10) is fixedly installed inside the handle (9). A conductive nut (11) and a charging interface (14) are fixedly installed at the tail end of the handle (9). A switch (15) is installed on the outer wall of the handle (9). The handle (9) has a sound-permeable hole (13) through its tail end. A buzzer (12) is installed in the handle (9) at the corresponding position of the sound-permeable hole (13). A straight rod (2) is fixedly installed through the other end of the base (1). A sleeve (3) for installing a bit (5) is fixedly connected to the end of the straight rod (2) away from the base (1). One end of the bit (5) is a regular hexagonal prism. The end face of the sleeve (3) is provided with a regular hexagonal shape that matches the bit (5). The base (1) has an annular groove (6) on its outer peripheral wall. An LED light strip (7) is installed in the annular groove (6). The winding mechanism includes a connecting rod (16). A handle (17) is fixedly installed on one side of the outer wall of the connecting rod (16). A conductive shaft (18) is fixedly installed on the other side of the outer wall of the connecting rod (16). A winding drum is rotatably sleeved on the outer wall of the conductive shaft (18). A rotating conductive mechanism is provided inside the winding drum. One end of the first wire (22) is installed on the winding drum. The second wire (27) is installed on the connecting rod (16). One end of the second wire (27) is fixedly connected to an alligator clip (28). The other end of the second wire (27) is electrically connected to the first wire (22) through the rotating conductive mechanism. The other end of the first wire (22) is fixedly connected to a conductive screw (30). The conductive screw (30) is adapted to a conductive nut (11).

2. The portable secondary circuit alignment instrument according to claim 1, characterized in that: A light-diffusing plate (8) is fixedly installed at the opening of the annular groove (6), and a wire hole is provided on the base (1). The annular groove (6) is connected to the inside of the handle (9) through the wire hole.

3. The portable secondary circuit alignment instrument according to claim 1, characterized in that: A magnet (4) is fixedly embedded inside the sleeve (3).

4. A portable secondary circuit alignment instrument according to claim 1, characterized in that: The winding drum includes a first turntable (19) rotatably mounted on a conductive shaft (18), a connecting tube (20), and a second turntable (21). One end of the connecting tube (20) is fixedly connected to the first turntable (19), and the other end of the connecting tube (20) is fixedly connected to the second turntable (21) by a screw. The first wire (22) is threaded through and installed on the connecting tube (20).

5. A portable secondary circuit alignment instrument according to claim 4, characterized in that: The rotating conductive mechanism includes a conductive ring (23) located inside the connecting tube (20), a conductive shaft (18) passing through the conductive ring (23), the conductive ring (23) being fixedly connected to the first turntable (19), the first wire (22) being fixedly connected to the conductive ring (23), the second wire (27) being fixedly connected to the conductive shaft (18), and a plurality of blind holes (24) being opened inside the conductive ring (23). A spring (25) and a carbon brush (26) are arranged inside and outside the blind holes (24).

6. A portable secondary circuit alignment instrument according to claim 5, characterized in that: The conductive shaft (18) is fitted with an end sleeve (31) at the end away from the connecting rod (16). The first turntable (19), the connecting pipe (20), and the second turntable (21) are located between the connecting rod (16) and the end sleeve (31). The end sleeve (31) is detachably connected to the conductive shaft (18) by multiple screws. The outer wall of the end sleeve (31) is fixedly connected to a mounting base (32). The mounting base (32) is slidably mounted with a pressure plate (35) on the outer wall of the second turntable (21) through a groove (34). The pressure plate (35) is fixedly provided with a rubber sheet (36) on the outer wall of the second turntable (21). The outer wall of the mounting base (32) is fitted with a hand-tightening bolt (33) through a threaded hole. The threaded end of the hand-tightening bolt (33) is located in the groove (34).

7. A portable secondary circuit alignment instrument according to claim 1, characterized in that: A wire ring (29) is fixedly installed on the outer wall of the connecting rod (16), and the first wire (22) passes through the wire ring (29).

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