A power-on detection device for a low-voltage distribution cabinet

Abstract

The present invention provides a power-on detection device for a low-voltage power distribution cabinet, which relates to the field of power distribution cabinet detection technology. The device comprises a mainboard, four telescopic rods are vertically provided on the mainboard, the ends of the four telescopic rods are commonly provided with a cover shell, a stylus tip for contacting a circuit breaker is slidably provided at a sliding hole of the cover shell, a spring is provided on the outer sleeve of the stylus tip, a sliding shaft is slidably and rotatably provided at the center of a pull frame on the mainboard, one end of the sliding shaft is provided with a boss that contacts the pull frame, the other end of the sliding shaft is provided with a cleaning disk, a limiting ring for inserting the sliding shaft is provided at the side hole of the cover shell, a pin is provided on the inner ring surface of the limiting ring, a slide groove is provided on the cylindrical surface of the sliding shaft, the slide groove and the pin form a sliding fit, and the slide groove is composed of a first straight segment, a spiral segment, and a second straight segment in sequence. After the stylus tip of the present invention contacts the screw of the circuit breaker output terminal, the spring is initially stretched to provide tension to avoid insufficient contact.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinet detection, and more particularly to a power-on detection device for a low-voltage power distribution cabinet. Background Art

[0002] In modern power systems, circuit breakers, as core components of low-voltage distribution cabinets, play an indispensable role. Their three functions of protection, control, and isolation are key to ensuring the safe and stable operation of power systems. Currently, when connecting wires to screw-type circuit breakers, it is necessary to use a screwdriver to loosen the terminal screws. After the terminal opening is large enough to accommodate the wire, the stripped wire is fully inserted into the terminal hole and pushed as far as possible to the bottom. Then, the screws are tightened clockwise to complete the crimping. It is worth noting that controlling the tightening force of the screws is particularly important. Too loose can easily cause poor contact, local overheating, and other problems, while too tight can cause damage to the wires or terminals.

[0003] Before energizing a low-voltage distribution cabinet, testing the circuit insulation is an essential safety step. The focus is on measuring the insulation resistance of each phase line relative to the neutral and ground wires. To do this, connect the tester to the phase lines in sequence. Conventional practice is to first disconnect the circuit breaker, then connect the tester probes to the circuit breaker terminal screws to establish electrical connection and complete the test.

[0004] However, existing testing technology relies primarily on manual operation of each circuit breaker, using test leads to contact the screws. This manual operation not only easily fatigues testers but also easily introduces detection errors when the test leads do not make sufficient contact with the screws. Furthermore, stains or dust on the screw surface can negatively impact the accuracy of test data, severely limiting improvements in detection efficiency and accuracy. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a power-on detection device for a low-voltage distribution cabinet.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a power-on detection device for a low-voltage distribution cabinet, comprising a main board, four telescopic rods are vertically provided on the main board, the ends of the four telescopic rods are commonly provided with a cover shell, and the cover shell is provided with a sliding hole and a side hole; a stylus tip for contacting the circuit breaker is slidably provided at the sliding hole of the cover shell, the upper part of the stylus tip is connected to a guide plate, the outer sleeve of the stylus tip is provided with a spring 1, and the two ends of the spring 1 are respectively connected to the cover shell and the guide plate; a pull frame is provided on the main board, a sliding shaft is slidably and rotatably provided at the center of the pull frame, and one end of the sliding shaft is provided with a convex contacting the pull frame The platform has a middle disk in the middle of the sliding shaft, a cleaning disk at the other end of the sliding shaft, a through hole for the pen tip to pass through, a spring 2 is provided on the outer sleeve of the sliding shaft, and the two ends of the spring 2 are in contact with the middle disk and the pull frame respectively. A limiting ring for inserting the sliding shaft is provided at the side hole of the cover shell, and a pin is provided on the inner ring surface of the limiting ring. A lifting block for blocking the middle disk is provided on the cover shell; a sliding groove is provided on the cylindrical surface of the sliding shaft, and the sliding groove and the pin form a sliding fit. The sliding groove is composed of a first straight segment, a spiral segment and a second straight segment in sequence, and the number of circles of the spiral segment of the sliding groove rotating around the central axis is an integer.

[0007] As a preferred technical solution of the present invention, the cleaning tray is provided with a brush for cleaning the circuit breaker terminal screws.

[0008] As a preferred technical solution of the present invention, a detection host is provided on the main board, a soft wire is connected between the detection host and the terminal of the guide plate, and the test pen head is conductively connected to the guide plate.

[0009] As a preferred technical solution of the present invention, the two long sides of the cover are provided with slide holes, a slider is slidably provided on the slide hole, a central axis is connected between the two sliders, both ends of the central axis are provided with a circular hinge seat, the upper rotation of the circular hinge seat is provided with a hinge ring, the hinge ring is connected to the end of the telescopic shaft of the electric cylinder, and the electric cylinder is rotatably provided below the main board;

[0010] As a preferred technical solution of the present invention, a smooth cylinder is provided in the middle of the central axis, a slide plate is provided on the main board, and an L slide rail is provided on the slide plate to form a sliding fit with the smooth cylinder. The L slide rail consists of a horizontal section and a vertical section.

[0011] As a preferred technical solution of the present invention, two clamps are symmetrically slidably provided on both sides of the slide plate on the central axis, and the side surfaces of the clamps are provided with arc surfaces. Two drive plates are symmetrically provided on the cover shell, and the drive plates are provided with inclined surfaces that contact the arc surfaces.

[0012] As a preferred technical solution of the present invention, a traction seat is provided at the end of the clamping plate, two guide rods are vertically slidably provided on the traction seat, the ends of the guide rods are commonly connected to the traction plate, a spring three is provided on the outer sleeve of the guide rod, the two ends of the spring three are respectively connected to the traction seat and the traction plate, and a rubber pad for clamping the circuit breaker wire is provided on the surface of the traction plate.

[0013] As a preferred technical solution of the present invention, a distance measuring instrument for detecting the distance of the traction plate is provided on the side of the traction seat.

[0014] As an optimal technical solution of the present invention, two slides are coaxially provided at the bottom of the main board, and a slide rod is provided on the two slides for sliding together. The slide rod is fixed on the base plate, and the base plate is arranged between the two side walls of the low-voltage distribution cabinet. A screw rod is rotatably provided on the base plate, and the screw rod and the nut block form a screw fit. The nut block is fixed to the bottom of the main board, and a slave bevel gear is provided at the end of the screw rod, and a main bevel gear is engaged with the side of the slave bevel gear. A motor is provided at the bottom of the base plate, and the rotating shaft of the motor passes through the base plate and is connected to the main bevel gear.

[0015] The beneficial effects of the present invention compared with the prior art are:

[0016] (1) After the probe tip of the present invention contacts the screw terminal of the circuit breaker, the cover shell continues to move toward the circuit breaker, and the probe tip no longer moves. Instead, the probe tip slides in the sliding hole. The spring is initially stretched to provide tension, so that the probe tip is in close contact with the circuit breaker screw terminal, avoiding insufficient contact. The probe tip is connected to the guide plate, and then the corresponding phase line on the circuit breaker is connected to the detection host through a soft wire, so as to detect whether the insulation requirements are met.

[0017] (2) When the cover of the present invention moves toward the circuit breaker, after the cleaning disk contacts the circuit breaker, the pin on the limit ring first slides in the first straight section and the spiral section of the slide groove in sequence, so that the cleaning disk rotates on the circuit breaker, thereby cleaning the circuit breaker output terminal screws, avoiding detection errors caused by stains or dust on the screws.

[0018] (3) When the stylus tip of the present invention passes through the cleaning disk, since the number of revolutions of the spiral section of the slide groove around the central axis is an integer, when the pin on the limit ring slides in the second straight section of the slide groove, the stylus tip is coaxial with the through hole of the cleaning disk, and the stylus tip can smoothly pass through the through hole of the cleaning disk and contact the circuit breaker output terminal screw.

[0019] (4) When the electric cylinder drives the smooth cylinder on the central axis to move along the vertical section of the L-shaped slide rail, the arc surface contacts the inclined surface of the drive plate, driving the two clamping plates to move simultaneously along the slider toward the center. That is, the two traction plates simultaneously move toward the circuit breaker wires, and the rubber pads clamp the circuit breaker wires. When the distance meter measures an increase in the distance between the traction seat and the traction plate, it can be determined that the circuit breaker wires are firmly installed; when the distance meter measures an unchanged distance between the traction seat and the traction plate, it can be determined that the circuit breaker wires are loosely installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0021] Figure 2 This is a structural diagram of the present invention installed in a low-voltage distribution cabinet.

[0022] Figure 3 It is a structural schematic diagram of the alignment circuit breaker of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the cover shell position of the present invention.

[0024] Figure 5 Schematic diagram of the structure inside the cover shell of the present invention.

[0025] Figure 6 Schematic diagram of the structure of the cover shell of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the installation of the measuring pen head and the cleaning disk of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the sliding shaft of the present invention.

[0028] Figure 9 This is a schematic structural diagram of the latch installation of the present invention.

[0029] Figure 10 This is a schematic structural diagram of the slider installation of the present invention.

[0030] Figure 11 This is a schematic structural diagram of the splint installation of the present invention.

[0031] Figure 12 This is a structural diagram of the installation of the slide rail plate of the present invention.

[0032] Figure 13 It is a structural schematic diagram of the central axis of the present invention.

[0033] Figure 14 This is a structural diagram of the installation of the traction plate of the present invention.

[0034] Figure 15 It is a structural schematic diagram of the present invention.

[0035] Figure numbers: 1-mainboard; 2-telescopic rod; 3-cover; 301-slide hole; 302-side hole; 303-slide hole; 4-test pen head; 5-guide plate; 6-spring 1; 7-pull frame; 8-sliding shaft; 801-slide groove; 9-boss; 10-middle plate; 11-cleaning plate; 1101-through hole; 12-spring 2; 13-limiting ring; 14-latch; 15-lifting block; 16-detection host; 17-flexible wire; 18-slider; 19-middle axis; 20-round Hinge seat; 21-hinge ring; 22-electric cylinder; 23-smooth cylinder; 24-slide plate; 2401-L slide rail; 25-clamping plate; 2501-arc surface; 26-drive plate; 27-traction seat; 28-guide rod; 29-traction plate; 30-spring three; 31-rubber pad; 32-distance measuring instrument; 33-slide seat; 34-slide rod; 35-base plate; 36-screw; 37-nut block; 38-slave bevel gear; 39-master bevel gear; 40-motor; 41-sensor. DETAILED DESCRIPTION

[0036] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0037] Example: See Figure 1-15 Structural schematic diagram, the present invention provides the following technical solutions: A power-on detection device for a low-voltage distribution cabinet, comprising a main board 1, four telescopic rods 2 vertically provided on the main board 1, a cover shell 3 commonly provided at the ends of the four telescopic rods 2, a sliding hole 301 and a side hole 302 provided on the cover shell 3; wherein, the four telescopic rods 2 enable the cover shell 3 to translate stably.

[0038] A stylus tip 4 for contacting the circuit breaker is slidably provided at the sliding hole 301 of the cover shell 3. A guide plate 5 is connected to the upper part of the stylus tip 4. A spring 16 is provided on the outer sleeve of the stylus tip 4. The two ends of the spring 16 are respectively connected to the cover shell 3 and the guide plate 5. A detection host 16 is provided on the main board 1. A soft wire 17 is connected between the detection host 16 and the terminal of the guide plate 5, and the stylus tip 4 and the guide plate 5 are conductive.

[0039] Specifically, the stylus tip 4 is aligned with the screws of the circuit breaker's output terminals. The cover 3 is moved toward the circuit breaker, moving the stylus tip 4 synchronously with it. After the stylus tip 4 contacts the circuit breaker's output terminal screws, it stops moving and slides within the slide hole 301. Spring 1 (6) begins to stretch, providing tension, ensuring close contact between the stylus tip 4 and the circuit breaker screw terminals, preventing any inadequate contact. The stylus tip 4 is then electrically connected to the guide plate 5. Then, via flexible conductor 17, the corresponding phase line on the circuit breaker is connected to the testing host 16, thereby testing whether insulation requirements are met. The testing host 16 is electrically connected to the neutral or ground wire via the conductor.

[0040] A pull frame 7 is provided on the main board 1, and a sliding shaft 8 is provided at the center of the pull frame 7 for sliding and rotation. A boss 9 in contact with the pull frame 7 is provided at one end of the sliding shaft 8, a middle disk 10 is provided in the middle of the sliding shaft 8, and a cleaning disk 11 is provided at the other end of the sliding shaft 8. A through hole 1101 is provided on the cleaning disk 11 for the stylus tip 4 to pass through. The diameter of the through hole 1101 is larger than the diameter of the stylus tip 4. A spring 2 12 is provided on the outer sleeve of the sliding shaft 8. The two ends of the spring 2 12 are in contact with the middle disk 10 and the pull frame 7 respectively. A limiting ring 13 for inserting the sliding shaft 8 is provided at the side hole 302 of the cover shell 3. A pin 14 is provided on the inner ring surface of the limiting ring 13. A lifting block 15 for blocking the middle disk 10 is provided on the cover shell 3.

[0041] A sliding groove 801 is provided on the cylindrical surface of the sliding shaft 8, and the sliding groove 801 forms a sliding fit with the pin 14. The sliding groove 801 is composed of a first straight segment (i.e., a straight segment away from the cleaning disk 11), a spiral segment, and a second straight segment (i.e., a straight segment close to the cleaning disk 11) in sequence. The number of turns of the spiral segment of the sliding groove 801 around the central axis is an integer.

[0042] The cleaning tray 11 is provided with a brush for cleaning the terminal screws of the circuit breaker.

[0043] Specifically, in the initial state, the pin 14 is located in the first straight section of the slide 801, the stylus tip 4 is coaxial with the through hole 1101, and the spring 2 12 is in a compressed state. During the movement of the cover shell 3 toward the circuit breaker, the cover shell 3 moves synchronously with the limit ring 13 and the lifting block 15. Since the spring 2 12 provides elastic force, the sliding shaft 8 also moves synchronously with the cover shell 3, and the middle disk 10 and the lifting block 15 do not separate. When the boss 9 contacts the sliding shaft 8, the sliding shaft 8 no longer moves horizontally, and the lifting block 15 separates from the sliding shaft 8. At this time, the brush on the cleaning disk 11 contacts the circuit breaker outlet terminal screw. The cover shell 3 continues to move toward the circuit breaker, and the pin 14 on the limit ring 13 first slides in the first straight section and the spiral section of the slide 801 in turn. During this process, the cleaning disk 11 rotates to clean the circuit breaker outlet terminal screw, avoiding detection errors caused by stains or dust on the screws. Then the pin 14 on the limiting ring 13 slides in the second straight section of the slide groove 801. Since the number of turns of the spiral section of the slide groove 801 around the central axis is an integer, during this process, the stylus tip 4 is coaxial with the through hole 1101, and the stylus tip 4 passes through the through hole 1101 and contacts the circuit breaker output terminal screw.

[0044] Slide holes 303 are provided on the two long sides of the cover shell 3, and sliders 18 are slidably provided on the slide holes 303. A central axis 19 is connected between the two sliders 18, and circular hinge seats 20 are provided at both ends of the central axis 19. A hinge ring 21 is provided on the upper rotation of the circular hinge seat 20, and the hinge ring 21 is connected to the telescopic shaft end of the electric cylinder 22. The electric cylinder 22 is rotatably arranged below the main board 1; a smooth cylinder 23 is provided in the middle of the central axis 19, and a slide plate 24 is provided on the main board 1. The slide plate 24 is provided with an L slide rail 2401 that forms a sliding fit with the smooth cylinder 23, and the L slide rail 2401 consists of a horizontal section and a vertical section.

[0045] Specifically, two electric cylinders 22 are activated simultaneously, extending their telescopic shafts. During the first phase, the electric cylinders 22 drive the smooth cylinder 23 on the central shaft 19 to move along the horizontal section of the L-shaped guide rail 2401. Consequently, the central shaft 19, along with the slider 18 and cover 3, moves synchronously toward the circuit breaker. During the second phase, the electric cylinders 22 drive the smooth cylinder 23 on the central shaft 19 to move along the vertical section of the L-shaped guide rail 2401. During this phase, the cover 3 remains stationary.

[0046] Two clamping plates 25 are symmetrically slidably provided on both sides of the slide plate 24 on the central axis 19 , and the side surfaces of the clamping plates 25 are provided with arc surfaces 2501 . Two driving plates 26 are symmetrically provided on the cover shell 3 , and the driving plates 26 are provided with inclined surfaces that contact the arc surfaces 2501 .

[0047] A traction seat 27 is provided at the end of the clamping plate 25. Two guide rods 28 are vertically slidably provided on the traction seat 27. The ends of the guide rods 28 are commonly connected to a traction plate 29. A spring 30 is provided on the outer surface of the guide rod 28. The two ends of the spring 30 are respectively connected to the traction seat 27 and the traction plate 29. The surface of the traction plate 29 is provided with a rubber pad 31 for clamping the circuit breaker wire.

[0048] A distance meter 32 for detecting the distance of the traction plate 29 is provided on the side of the traction seat 27. Optionally, the traction seat 27 is an infrared distance sensor.

[0049] Specifically, as the cover 3 moves toward the circuit breaker, the two traction plates 29 move to either side of the circuit breaker conductor. The ends of the traction plates 29 facing the circuit breaker are inclined, facilitating their movement to either side of the circuit breaker conductor. As the smooth cylinder 23 on the central axis 19 moves along the vertical segment of the L-shaped slide rail 2401, the central axis 19 moves synchronously with the clamping plates 25 and the traction seat 27. The curved surface 2501 contacts the inclined surface of the drive plate 26, which then drives the two clamping plates 25 to move simultaneously toward the center along the slider 18. This means that the two traction plates 29 simultaneously move toward the circuit breaker conductor, with the rubber pads 31 clamping the circuit breaker conductor. As the smooth cylinder 23 continues to move along the vertical segment of the L-shaped slide rail 2401, if the conductors in the circuit breaker are securely installed, the rubber pads 31 and traction plate 29 stop moving, while the traction base 27 slides within the guide rod 28, causing spring 30 to stretch. As a result, the distance between the traction base 27 and traction plate 29 measured by the distance meter 32 increases, indicating that the conductors are securely installed. If the conductors in the circuit breaker become loose, the two rubber pads 31 clamp the conductors, while spring 30 provides tension. The traction plate 29 and rubber pads 31 move synchronously with the traction base 27, pulling the conductors away from the circuit breaker. As a result, the distance between the traction base 27 and traction plate 29 measured by the distance meter 32 remains unchanged, indicating that the conductors are loose.

[0050] Two slides 33 are coaxially provided at the bottom of the main board 1, and a slide rod 34 is provided on the two slides 33 for sliding together. The slide rod 34 is fixed on the base plate 35, and the base plate 35 is arranged between the two side walls of the low-voltage distribution cabinet. A screw rod 36 is rotatably provided on the base plate 35, and the screw rod 36 forms a screw fit with the nut block 37. The nut block 37 is fixed to the bottom of the main board 1, and a slave bevel gear 38 is provided at the end of the screw rod 36. A main bevel gear 39 is engaged with the side of the slave bevel gear 38. A motor 40 is provided at the bottom of the base plate 35, and the rotating shaft of the motor 40 passes through the base plate 35 and is connected to the main bevel gear 39.

[0051] Specifically, the motor 40 drives the main bevel gear 39 to rotate, which in turn transmits power to the secondary bevel gear 38, driving the screw 36 to rotate. This power is then transmitted through the nut block 37, driving the main board 1 and the slide 33 to move along the slide bar 34. The sensor 41 and the stylus head 4 are located on the same vertical plane, and the sensor 41 and the circuit breaker input terminal screw are located on the same horizontal plane. When the sensor 41 detects the screw of the circuit breaker input terminal screw, the motor 40 is stopped. Since the circuit breaker input terminal screw and the output terminal screw are located on the same vertical plane, the stylus head 4 is now coaxial with the circuit breaker output terminal screw. Therefore, by controlling the start and stop of the motor 40, the stylus head 4 can be aligned with the circuit breaker output terminal screw in sequence, thereby testing all phase lines in sequence.

[0052] The sensor 41 may be an infrared distance sensor. Since the circuit breaker terminal screw is not flush with the housing, when the sensor 41 detects a set distance, it can be determined that the sensor 41 is aligned with the circuit breaker incoming terminal screw.

[0053] Working principle: In the initial state, the telescopic shaft of the electric cylinder 22 is in a retracted state, the pin 14 is located in the first straight section of the slide groove 801, the stylus head 4 is coaxial with the through hole 1101, and the spring 12 is in a compressed state.

[0054] When the power supply of the low-voltage distribution cabinet is tested, the motor 40 is started, and the motor 40 drives the main bevel gear 39 to rotate. The power is transmitted from the bevel gear 38 to drive the screw rod 36 to rotate, and then the power is transmitted through the nut block 37 to drive the main board 1 and the slide 33 to move along the slide rod 34. When the sensor 41 detects the set distance, that is, when the sensor 41 is aligned with the circuit breaker input terminal screw, the motor 40 is stopped. At this time, the test pen head 4 is coaxial with the circuit breaker output terminal screw.

[0055] Simultaneously, both electric cylinders 22 are activated, extending their telescopic shafts. During the first phase, the electric cylinders 22 drive the smooth cylinder 23 on the central shaft 19 along the horizontal section of the L-shaped guide rail 2401. Consequently, the central shaft 19, along with the slider 18 and the cover 3, moves synchronously toward the circuit breaker. The cover 3, along with the retaining ring 13 and the lifting block 15, also moves synchronously. Due to the elastic force provided by spring 2 12, the sliding shaft 8 also moves synchronously with the cover 3, and the central disc 10 and lifting block 15 remain connected. Once the boss 9 contacts the sliding shaft 8, the shaft ceases translation and the lifting block 15 separates. At this point, the brush on the cleaning disc 11 contacts the screws of the circuit breaker's terminal blocks. As the cover 3 continues to move toward the circuit breaker, the latch 14 on the retaining ring 13 slides sequentially along the first straight and then spiral sections of the guide slot 801. The cleaning disc 11 rotates, cleaning the screws and preventing detection errors caused by dirt or dust on the screws. Then, the latch 14 on the retaining ring 13 slides within the second straight segment of the slide slot 801. Because the spiral segment of the slide slot 801 rotates an integer number of times around its central axis, during this process, the stylus tip 4 becomes coaxial with the through-hole 1101. The stylus tip 4 passes through the through-hole 1101 and contacts the circuit breaker's output terminal screw. Once in contact, the stylus tip 4 ceases movement and slides within the slide slot 301. Spring 1 (6) begins to stretch, providing tension and ensuring firm contact between the stylus tip 4 and the circuit breaker screw terminal, preventing any inadequate contact. Conductive contact is established between the stylus tip 4 and the guide plate 5. Then, via the flexible conductor 17, the corresponding phase line on the circuit breaker is connected to the testing host 16, allowing testing to verify that insulation requirements are met.

[0056] When the cover shell 3 moves toward the circuit breaker, the two pulling plates 29 move to the two sides of the circuit breaker wire respectively.

[0057] During the second stage of extension of the telescopic shaft of electric cylinder 22, electric cylinder 22 drives the smooth cylinder 23 on central shaft 19 along the vertical section of L-shaped rail 2401. During this period, cover 3 remains stationary, and slider 18 slides within its corresponding slide hole 303. Central shaft 19, carrying clamping plate 25 and traction seat 27, moves synchronously. The curved surface 2501 contacts the inclined surface of drive plate 26. Drive plate 26 then drives both clamping plates 25 toward the center along slider 18. This means both traction plates 29 simultaneously move toward the circuit breaker wires, with rubber pads 31 clamping the wires. As smooth cylinder 23 continues to move along the vertical section of L-shaped rail 2401, when the wires in the circuit breaker are securely installed, rubber pads 31 and traction plates 29 cease movement. While traction seat 27 slides within guide rod 28, spring 30 stretches. As distance meter 32 measures an increase in the distance between traction seat 27 and traction plate 29, it is determined that the circuit breaker wires are securely installed. When the wire in the circuit breaker is loose, the two rubber pads 31 clamp the wire and the spring 3 provides tension. Therefore, the traction plate 29 and the rubber pad 31 move synchronously with the traction seat 27. The two rubber pads 31 pull the wire off the circuit breaker. Therefore, the distance measured by the distance meter 32 between the traction seat 27 and the traction plate 29 remains unchanged, which can be used to determine that the wire of the circuit breaker is loose.

[0058] Repeat the above process and control the start and stop of the motor 40 to make the probe head 4 align with the output terminal screws of the circuit breaker in sequence, thereby testing all phase lines in sequence.

[0059] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. A power-on detection device for a low-voltage distribution cabinet, comprising a mainboard (1), characterized in that: Four telescopic rods (2) are vertically provided on the main board (1), and ends of the four telescopic rods (2) are commonly provided with a cover shell (3), and the cover shell (3) is provided with a sliding hole (301) and a side hole (302); A stylus tip (4) for contacting the circuit breaker is slidably provided at the sliding hole (301) of the cover shell (3), the upper portion of the stylus tip (4) is connected to a guide plate (5), the outer sleeve of the stylus tip (4) is provided with a spring (6), and the two ends of the spring (6) are respectively connected to the cover shell (3) and the guide plate (5); The main board (1) is provided with a pull frame (7), a sliding shaft (8) is provided at the center of the pull frame (7) so as to slide and rotate, one end of the sliding shaft (8) is provided with a boss (9) in contact with the pull frame (7), a middle plate (10) is provided in the middle of the sliding shaft (8), a cleaning plate (11) is provided at the other end of the sliding shaft (8), a through hole (1101) for the pen tip (4) to pass through is provided on the cleaning plate (11), the outer sleeve of the sliding shaft (8) is provided with a spring 2 (12), the two ends of the spring 2 (12) are in contact with the middle plate (10) and the pull frame (7) respectively, a limiting ring (13) for the sliding shaft (8) to be inserted is provided at the side hole (302) of the cover shell (3), a latch (14) is provided on the inner ring surface of the limiting ring (13), and a lifting block (15) for blocking the middle plate (10) is provided on the cover shell (3); A sliding groove (801) is provided on the cylindrical surface of the sliding shaft (8), and the sliding groove (801) forms a sliding fit with the latch (14). The sliding groove (801) is composed of a first straight segment, a spiral segment, and a second straight segment in sequence. The number of revolutions of the spiral segment of the sliding groove (801) around the central axis is an integer.

2. The power-on detection device for a low-voltage distribution cabinet according to claim 1, characterized in that: The cleaning disc (11) is provided with a brush for cleaning the circuit breaker terminal screws.

3. The power-on detection device for a low-voltage distribution cabinet according to claim 1, characterized in that: The main board (1) is provided with a detection host (16), a soft wire (17) is connected between the detection host (16) and the terminal of the guide plate (5), and the measuring pen head (4) and the guide plate (5) are conductive.

4. The power-on detection device for a low-voltage distribution cabinet according to claim 1, characterized in that: The two long sides of the cover shell (3) are provided with a slide hole (303), a slider (18) is slidably provided on the slide hole (303), a central axis (19) is connected between the two sliders (18), and a circular hinge seat (20) is provided at both ends of the central axis (19), and a hinge ring (21) is provided on the upper rotation of the circular hinge seat (20), and the hinge ring (21) is connected to the telescopic shaft end of the electric cylinder (22), and the electric cylinder (22) is rotatably provided below the main board (1); A smooth cylinder (23) is provided in the middle of the central axis (19), a slide plate (24) is provided on the main board (1), and an L slide rail (2401) is provided on the slide plate (24) to form a sliding fit with the smooth cylinder (23), and the L slide rail (2401) is composed of a horizontal section and a vertical section.

5. The power-on detection device for a low-voltage distribution cabinet according to claim 4, characterized in that: Two clamping plates (25) are symmetrically provided on both sides of the slide plate (24) on the central axis (19), and the side surfaces of the clamping plates (25) are provided with arc surfaces (2501). Two driving plates (26) are symmetrically provided on the cover shell (3), and the driving plates (26) are provided with inclined surfaces that contact the arc surfaces (2501).

6. The power-on detection device for a low-voltage distribution cabinet according to claim 5, characterized in that: The end of the clamping plate (25) is provided with a traction seat (27), and two guide rods (28) are vertically slidably provided on the traction seat (27). The ends of the guide rods (28) are commonly connected to a traction plate (29). A spring three (30) is provided on the outside of the guide rod (28), and the two ends of the spring three (30) are respectively connected to the traction seat (27) and the traction plate (29). The surface of the traction plate (29) is provided with a rubber pad (31) for clamping the circuit breaker wire.

7. The power-on detection device for a low-voltage distribution cabinet according to claim 6, characterized in that: A distance meter (32) for detecting the distance of the traction plate (29) is provided on the side of the traction seat (27).

8. A power-on detection device for a low-voltage distribution cabinet according to any one of claims 1 to 7, characterized in that: Two slides (33) are coaxially provided at the bottom of the main board (1), and a slide rod (34) is provided on the two slides (33) for sliding together. The slide rod (34) is fixed on a base plate (35), and the base plate (35) is provided between two side walls of the low-voltage distribution cabinet. A screw rod (36) is rotatably provided on the base plate (35), and the screw rod (36) and the nut block (37) form a screw fit. The nut block (37) is fixed to the bottom of the main board (1). A slave bevel gear (38) is provided at the end of the screw rod (36), and a main bevel gear (39) is meshed with the side of the slave bevel gear (38). A motor (40) is provided at the bottom of the base plate (35), and a rotating shaft of the motor (40) passes through the base plate (35) and is connected to the main bevel gear (39).

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