A fault detection device for a distribution box in operation

Abstract

The present invention relates to the technical field of distribution boxes, and specifically discloses a distribution box fault detection device for use in operation, including a docking seat, wherein the docking seat includes a socket rotatably mounted on the side wall of the distribution box body, the socket is provided with a docking slot for plugging with the power-connected metal end, and a reciprocating screw is rotatably mounted inside the distribution box body. The distribution box fault detection device for use in operation, through the arrangement of the docking seat and the handheld detector, can place the detector for detecting faults inside the distribution box body in advance when assembling the distribution box, and install the docking seat electrically connected to the detector on the outside of the distribution box body. When the distribution box needs to be inspected, it is only necessary to plug the handheld detector into the docking seat to obtain the temperature inside the distribution box body, thereby avoiding the danger that may be triggered by opening the distribution box door for inspection, and improving the safety of the inspection.

Description

Technical Field

[0001] The invention relates to the technical field of distribution boxes, and in particular to a fault detection device for a distribution box in operation. Background Art

[0002] A distribution box is a device used to control and distribute electricity. It plays a role in distributing power to various circuits and equipment in the power system. It usually consists of power input, distribution circuit, protection device, control equipment and circuit breaker. Industrial plants, commercial buildings, hospitals, airports, etc., large distribution boxes carry greater power loads and more complex circuit distribution, so these places usually need to install large distribution boxes, industrial plants, commercial buildings, hospitals, airports, etc., they carry greater power loads and more complex circuit distribution.

[0003] Generally speaking, vents or radiators are usually set on both sides of large distribution boxes to dissipate heat. Since high-power electrical equipment may run inside large distribution boxes, long-term operation may generate heat, so vents or radiators are needed to maintain normal temperature. However, since large distribution boxes have many connecting lines, abnormal temperature problems may still occur, so it is necessary to regularly perform fault detection on the running distribution boxes.

[0004] Abnormal temperature inside the distribution box may be caused by a variety of reasons, including overload, short circuit, poor contact, equipment aging, etc., so abnormal temperature inside the distribution box is one of the indicators of a fault in the distribution box. Temperature sensors or infrared detectors are now used to scan the inside of the distribution box. Since the electrical equipment inside the large distribution box will carry high voltage current during operation, touching these devices may cause electric shock, causing serious injuries or even life-threatening; therefore, it does not meet the existing needs. In this regard, we propose a fault detection device for the distribution box in operation. Summary of the invention

[0005] The present invention provides a fault detection device for a distribution box in operation, which has the beneficial effect of detecting abnormal temperature inside the distribution box without closing the running distribution box or opening the distribution box door, thereby detecting fault conditions of the distribution box. It solves the problem mentioned in the above background technology that temperature sensors or infrared detectors are currently used to scan the inside of the distribution box. Since the electrical equipment inside the large distribution box will carry high voltage current when running, touching these equipment may cause electric shock, resulting in serious injury or even life-threatening.

[0006] The present invention provides the following technical solution: a fault detection device for a distribution box in operation, comprising a docking seat, the docking seat comprising a socket rotatably mounted on the side wall of the distribution box body, the socket being provided with a docking groove for being plugged into the power-connected metal end, a reciprocating screw being rotatably mounted inside the distribution box body, a docking transmission belt for transmission being jointly mounted on the socket and the end of the reciprocating screw, both ends of the reciprocating screw being located in the heat dissipation port, a moving rod being installed inside the distribution box body, a movable seat being slidably fitted on the reciprocating screw, a sliding ring being provided at the bottom of the movable seat, the sliding ring being slidably sleeved with the moving rod, and the detector being mounted on the side of the sliding ring.

[0007] As an optional solution of a distribution box fault detection device in operation described in the present invention, the handheld detector includes a handheld rod for carrying the power-connected metal end and the motor, the motor is installed in the middle of the handheld rod, the power-connected metal end is arranged at one end of the handheld rod, and the other end of the handheld rod is equipped with an insulating handle for the staff to hold.

[0008] As an optional solution for a distribution box fault detection device in operation described in the present invention, the moving rod is configured as a wavy moving rod, a swing sleeve is connected to the bottom of the movable seat, an extension rod connected to the sliding ring is inserted into the swing sleeve, and a mounting rod is connected between the sliding ring and the detector.

[0009] As an optional solution for a fault detection device for a distribution box in operation described in the present invention, wherein: one end of the reciprocating screw rod adjacent to the docking seat is keyed to a first gear, the other end of the reciprocating screw rod is keyed to a second gear, a transmission mechanism is provided on the inner wall of the distribution box, the first gear and the second gear are connected to the transmission mechanism to achieve a transmission connection with the moving rod, and when the movable seat moves to the two ends of the reciprocating screw rod, the moving rod flips.

[0010] As an optional solution of a fault detection device for a distribution box in operation described in the present invention, wherein: the transmission mechanism includes a first transmission wheel and a second transmission wheel rotatably installed on the inner wall of the distribution box, the first transmission wheel and the second transmission wheel are commonly connected with a transmission belt, and a transmission gear for meshing with the first gear and the second gear is coaxially installed on the side of the first transmission wheel, the transmission gear is rotationally matched with the first transmission wheel, and a volute spring is installed between the transmission gear and the first transmission wheel.

[0011] As an optional solution for a distribution box fault detection device in operation described in the present invention, a limiting mechanism for locking the gap of the first transmission wheel is arranged in the middle of the distribution box body, and the limiting mechanism includes a bracket rod located on the outside of the distribution box body, one end of the bracket rod is connected to the limiting rod, a limiting hole is provided on the side of the first transmission wheel, the limiting rod is intermittently plugged into the limiting hole, the other end of the bracket rod is connected to a resistance rod for contacting the movable seat, a vertical rod is connected to the resistance rod, a reset spring is arranged on the outer sleeve of the resistance rod, and the reset spring is located between the inner wall of the distribution box body and the vertical rod.

[0012] As an optional solution of a fault detection device for a distribution box in operation described in the present invention, wherein: the top end of the vertical rod adjacent to the first gear is connected to a second rack, the top end of the vertical rod adjacent to the second gear is connected to a first rack, a dustproof shell is fixedly installed inside the distribution box body, the second rack and the first rack are both slidably matched with the dustproof shell, and a double-meshing gear that meshes with the second rack and the first rack at the same time is rotatably installed in the dustproof shell.

[0013] As an optional solution for a fault detection device for a distribution box in operation described in the present invention, the sliding ring is rotatably matched with the movable seat, a stabilizing hole is opened on the side of the movable seat, a stabilizing rod is fixedly installed in the distribution box body, the stabilizing rod is parallel to the reciprocating screw rod, and the stabilizing hole is interlaced with the stabilizing rod.

[0014] As an optional solution for a distribution box fault detection device in operation described in the present invention, blocks for interfering with the interference rod are slidably installed on both sides of the movable seat, an air bag is installed inside the movable seat, an air guide tube is arranged between the air bag and the stabilizing hole, a piston block for interfering with the stabilizing rod is slidably installed at one end of the air guide tube adjacent to the stabilizing hole, and an extrusion spring for resetting the block is installed on the side.

[0015] The present invention has the following beneficial effects:

[0016] 1. The fault detection device for the distribution box in operation can place the detector for fault detection inside the distribution box in advance when assembling the distribution box through the setting of the docking seat and the handheld detector, and install the docking seat electrically connected to the detector on the outside of the distribution box. When the distribution box needs to be inspected, only the handheld detector needs to be plugged into the docking seat to obtain the temperature inside the distribution box, thereby avoiding the danger of opening the door of the distribution box for inspection and possible triggering, and improving the safety of inspection;

[0017] By plugging the handheld detector into the docking seat, when the motor is turned on, the docking seat can drive the reciprocating screw to rotate through the transmission of the docking transmission belt, and the reciprocating screw, moving rod and movable seat are set to form a bidirectional screw slide that can automatically move in reverse. Therefore, the movable seat can translate back and forth along the reciprocating screw, so that the detector can scan and move at the same time. Compared with fixed-point scanning temperature, this setting has a wider collection area and higher data credibility, thereby ensuring the accuracy of distribution box temperature collection without opening the box door, that is, accurate fault detection.

[0018] 2. The fault detection device for the distribution box in operation sets the moving rod into a wavy moving rod, and sets a swing sleeve and an extension rod, so that during the translation of the movable seat along the reciprocating screw rod, the movement of the detector connected to the sliding ring is curved, and the detector moves up and down while moving horizontally, thereby expanding the collection range of the detector, further improving the accuracy of temperature collection inside the distribution box, reducing scanning blind spots, and enhancing the reliability and accuracy of distribution box fault detection.

[0019] 3. The fault detection device for the distribution box in operation, through the setting of the transmission mechanism, when the reciprocating screw rotates, the first gear and the second gear drive the transmission gears on both sides to rotate, thereby driving the moving rod to rotate; through the cooperation of the first transmission wheel, the volute spring, the limiting mechanism and the transmission gear, the moving rod rotates 180 degrees.

[0020] 4. The fault detection equipment for the distribution box in operation, through the cooperation of the first rack, the double-meshing gear and the second rack, when the movable seat pushes the abutment rod, the bracket rods on both sides move toward the outside of the box at the same time, ensuring that the transmission mechanisms on both sides of the reciprocating screw are unlocked and locked at the same time, not only that, through the setting of the stabilizing rod, the movable seat remains vertical when the movable rod flips, and through the setting of the abutment block, the airbag and the piston block, at the moment the movable rod flips, the piston block protrudes outward to abut the stabilizing rod, thereby enhancing the stability of the movable seat, reducing the wear of the reciprocating screw thread and the loss of other parts caused by the vibration caused by the flipping of the moving rod, extending the service life of the parts, and improving the reliability of the automatic dynamic scanning detection of the detector, thereby extending the timeliness of the detection method of this scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the handheld detector of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the detection mechanism docking seat of the present invention.

[0024] Figure 4It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the first transmission wheel in the free state of the present invention.

[0026] Figure 6 It is a schematic cross-sectional structure diagram of the first transmission wheel in a locked state of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the detection start of the present invention.

[0028] Figure 8 It is a schematic diagram of the general structure of the detection of the present invention.

[0029] Fig. 9 It is a schematic diagram of the cross-sectional structure of the movable seat of the present invention.

[0030] Fig.10 It is a schematic diagram of the partial cross-sectional structure of the movable seat of the present invention.

[0031] Fig.11 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0032] In the figure: 10, distribution box body; 20, heat dissipation port; 30, docking seat; 31, socket; 32, docking slot; 33, docking drive belt; 40, handheld detector; 41, handheld rod; 42, insulating handle; 43, power metal end; 44, motor; 50, detector; 100, reciprocating screw rod; 110, first gear; 120, second gear; 200, movable seat; 210, ball sliding hole; 220, swing sleeve; 230, extension rod; 240, sliding ring; 250, mounting rod; 300, transmission mechanism; 310, transmission gear; 320, first Transmission wheel; 321, limit hole; 330, scroll spring; 340, transmission belt; 350, second transmission wheel; 400, moving rod; 410, straight portion; 500, limiting mechanism; 510, bracket rod; 520, limiting rod; 530, resistance rod; 540, vertical rod; 550, return spring; 560, first rack; 570, double meshing gear; 580, second rack; 590, dust cover; 600, stabilizing rod; 610, stabilizing hole; 620, resistance block; 630, airbag; 640, air guide tube; 650, piston block; 660, extrusion spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1: This embodiment is intended to solve the problem that a temperature sensor or infrared detector is currently used to scan the inside of a distribution box. Since the electrical equipment inside a large distribution box carries high voltage current during operation, touching these equipment may cause electric shock, causing serious injury or even life-threatening. Please refer to Figure 1-Figure 11 A distribution box fault detection device for use in operation includes a docking seat 30, the docking seat 30 includes a socket 31 rotatably mounted on the side wall of the distribution box body 10, the socket 31 is provided with a docking groove 32 for plugging with the power-connected metal end 43, a reciprocating screw rod 100 is rotatably mounted inside the distribution box body 10, the socket 31 and the end of the reciprocating screw rod 100 are jointly installed with a docking transmission belt 33 for transmission, the two ends of the reciprocating screw rod 100 are located in the heat dissipation port 20, a moving rod 400 is installed in the distribution box body 10, a movable seat 200 is slidably matched on the reciprocating screw rod 100, a sliding ring 240 is provided at the bottom of the movable seat 200, the sliding ring 240 is slidably sleeved with the moving rod 400, and a detector 50 is installed on the side of the sliding ring 240.

[0035] See Figure 1 A plurality of heat dissipation openings 20 are symmetrically provided on both sides of the distribution box body 10 .

[0036] It should be noted that the reciprocating screw is a screw that can make the slider reciprocate without changing the direction of rotation of the main shaft. The reciprocating screw is a form of a three-dimensional cam pair, which is represented by two thread grooves with the same pitch and opposite rotation. The two ends are connected by a transition curve. Through the rotation of the screw, the side of the spiral groove pushes the slider placed in the spiral groove to perform axial reciprocating motion. Therefore, in this solution, the rotation direction of the reciprocating screw 100 remains unchanged, but the movable seat 200 will automatically return when it moves to the end.

[0037] The movable seat 200 is provided with a ball sliding hole 210 , and the ball sliding hole 210 cooperates with the reciprocating screw rod 100 , that is, the movable seat 200 is a ball sliding seat.

[0038] When the temperature inside the distribution box exceeds 40 degrees Celsius, it can be considered abnormal. This is because under normal operating conditions, electrical equipment and cables may also generate a certain amount of heat at lower loads, but temperatures exceeding 40 degrees Celsius may indicate abnormal conditions such as overload, short circuit, wire aging or other faults.

[0039] The handheld detector 40 includes a handheld rod 41 for carrying a power-connected metal end 43 and a motor 44. The motor 44 is installed in the middle of the handheld rod 41. The power-connected metal end 43 is set at one end of the handheld rod 41. The other end of the handheld rod 41 is installed with an insulating handle 42 for the staff to hold. In this solution, the handheld rod 41 and the insulating handle 42 of the handheld detector 40 are both set to insulating materials, which can be insulating plastic. And the detector 50 in this embodiment can be set to an existing temperature scanner or infrared imager. The temperature scanner or infrared imager is a common equipment for convenient temperature detection, which is well known to those skilled in the art and will not be described here.

[0040] In the present embodiment: by providing the docking socket 30 and the handheld detector 40, when assembling the distribution box, the detector 50 for detecting faults can be placed inside the distribution box body 10 in advance, and the docking socket 30 electrically connected to the detector 50 can be installed on the outside of the distribution box body 10. When the distribution box needs to be inspected, it is only necessary to plug the handheld detector 40 into the docking socket 30 to obtain the internal temperature of the distribution box body 10, thereby avoiding the danger that may be triggered by opening the distribution box door for inspection and improving the safety of the inspection.

[0041] By plugging the handheld detector 40 into the docking seat 30, when the motor 44 is turned on, the docking seat 31 can drive the reciprocating screw 100 to rotate through the transmission of the docking transmission belt 33, and the reciprocating screw 100, the moving rod 400 and the movable seat 200 are set to form a bidirectional screw slide that can automatically move in the opposite direction. Therefore, the movable seat 200 can translate back and forth along the reciprocating screw 100, so that the detector 50 can scan and move at the same time. Compared with fixed-point scanning temperature, such a setting has a wider collection area and higher data credibility, thereby ensuring the accuracy of the distribution box temperature collection without opening the box door, that is, the accuracy of fault detection.

[0042] Embodiment 2: This embodiment aims to solve the problem that the internal space of a large distribution box is large, the circuit location is widely distributed, and the translation scanning may not be able to collect complete data, affecting the detection results. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 11 The moving rod 400 is configured as a wave-shaped moving rod, a swing sleeve 220 is connected to the bottom of the movable seat 200, a protruding rod 230 connected to a sliding ring 240 is inserted into the swing sleeve 220, and a mounting rod 250 is connected between the sliding ring 240 and the detector 50.

[0043] By setting the moving rod 400 as a wavy moving rod, and providing a swing sleeve 220 and an extension rod 230, the movement of the detector 50 connected to the sliding ring 240 is curved during the translation of the movable seat 200 along the reciprocating screw rod 100. The detector 50 moves up and down while moving horizontally, thereby expanding the collection range of the detector 50, further improving the accuracy of temperature collection inside the distribution box, reducing scanning blind spots, and enhancing the reliability and accuracy of distribution box fault detection.

[0044] One end of the reciprocating screw rod 100 adjacent to the docking seat 30 is keyed to the first gear 110, and the other end of the reciprocating screw rod 100 is keyed to the second gear 120. A transmission mechanism 300 is provided on the inner wall of the distribution box body 10. The first gear 110 and the second gear 120 are connected to the transmission mechanism 300 to achieve transmission connection with the moving rod 400. When the movable seat 200 moves to the two ends of the reciprocating screw rod 100, the moving rod 400 flips over.

[0045] The transmission mechanism 300 includes a first transmission wheel 320 and a second transmission wheel 350 rotatably mounted on the inner wall of the distribution box body 10. The first transmission wheel 320 and the second transmission wheel 350 are commonly connected to a transmission belt 340. A transmission gear 310 for meshing with the first gear 110 and the second gear 120 is coaxially mounted on the side of the first transmission wheel 320. The transmission gear 310 rotates with the first transmission wheel 320, and a spiral spring 330 is installed between the transmission gear 310 and the first transmission wheel 320.

[0046] A limiting mechanism 500 for gap locking the first transmission wheel 320 is provided in the middle of the distribution box body 10. The limiting mechanism 500 includes a bracket rod 510 located on the outside of the distribution box body 10, one end of the bracket rod 510 is connected to the limiting rod 520, a limiting hole 321 is provided on the side of the first transmission wheel 320, the limiting rod 520 is intermittently plugged into the limiting hole 321, and the other end of the bracket rod 510 is connected to a resistance rod 530 for contacting the movable seat 200, a vertical rod 540 is connected to the resistance rod 530, and a reset spring 550 is provided on the outer sleeve of the resistance rod 530, and the reset spring 550 is located between the inner wall of the distribution box body 10 and the vertical rod 540.

[0047] The limiting rod 520 and the resisting rod 530 are respectively connected to the upper end and the lower end of the bracket rod 510 , and both the limiting rod 520 and the resisting rod 530 are interlaced with the side wall of the distribution box body 10 .

[0048] A second rack 580 is connected to the top of the vertical rod 540 adjacent to the first gear 110, and a first rack 560 is connected to the top of the vertical rod 540 adjacent to the second gear 120. A dustproof cover 590 is fixedly installed inside the distribution box body 10. The second rack 580 and the first rack 560 are both slidably matched with the dustproof cover 590, and a double-meshing gear 570 is rotatably installed inside the dustproof cover 590 and meshes with the second rack 580 and the first rack 560 at the same time.

[0049] For specific settings, see Figure 5 and Figure 6 There are two limiting holes 321, and the two limiting holes 321 are arranged on an outer diameter. One end of the spiral spring 330 is connected to the transmission gear 310, and the other end is connected to the first transmission wheel 320. When the first transmission wheel 320 is locked, the rotation of the transmission gear 310 is absorbed by the spiral spring 330.

[0050] In this embodiment, the wave curve of the moving rod 400 is set vertically. Due to the transmission ratio of the transmission gear 310 and the second gear 120, during the entire process of the movable seat 200 moving from one end of the reciprocating screw rod 100 to the other end, the transmission gear 310 rotates half a circle, that is, when the transmission mechanism 300 is unlocked, the limiting rod 520 is separated from a limiting hole 321, and the first transmission wheel 320 also rotates half a circle. Driven by the transmission belt 340, the second transmission wheel 350 and the moving rod 400 also rotate 180 degrees.

[0051] After flipping, the movable seat 200 moves back, and the limiting rod 520 is inserted into another limiting hole 321 to be locked again.

[0052] It should be noted that this solution is applied to a large distribution box, which is a distribution device used in a large power system. It is usually used in industry, commerce or large buildings to distribute and control power supply, and its size is large.

[0053] In this embodiment: through the setting of the transmission mechanism 300, when the reciprocating screw 100 rotates, the first gear 110 and the second gear 120 drive the transmission gears 310 on both sides to rotate, thereby driving the moving rod 400 to rotate; through the cooperation of the first transmission wheel 320, the spiral spring 330 and the transmission gear 310, when the first transmission wheel 320 is locked by the limiting mechanism 500, the rotation of the reciprocating screw 100 can only be transmitted to the spiral spring 330, and the spiral spring 330 is compressed, so the first transmission wheel 320 will not rotate immediately until the movable seat 200 reaches the end of the reciprocating screw 100, that is, when the detector 50 completes a one-way scan, the movable seat 200 and the abutment rod 53 0's friction causes the limiting rod 520 to separate from the first transmission wheel 320. At this time, the volute spring 330 releases and rebounds to drive the first transmission wheel 320 and the second transmission wheel 350 to rotate, so that the moving rod 400 rotates rapidly at this time. The volute spring 330 is released, and the moving rod 400 stops rotating. At this time, the moving rod 400 rotates 180 degrees, and the wave curve of the moving rod 400 is mirrored. At the same time, the movable seat 200 moves back along the reciprocating screw rod 100, and the friction rod 530 is inserted into the limiting hole 321 again to lock the first transmission wheel 320, so that the moving rod 400 maintains the position and angle after rotation until the movable seat 200 reaches the other end and the detector 50 completes the return scan.

[0054] When the detector 50 scans back, because the wave position of the moving rod 400 is flipped, the position scanned by the detector 50 is exactly the previously missing position, thereby further improving the collection coverage area of ​​the detector 50 and further enhancing the reliability and accuracy of the distribution box fault detection.

[0055] Embodiment 3: This embodiment is intended to solve the problem that when the moving rod 400 is turned over, a large shake will occur, thereby affecting the detector 50 and other parts. This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 11 The sliding ring 240 is rotatably matched with the movable seat 200, and is specifically configured such that the swing sleeve 220 is hinged to the movable seat 200.

[0056] A stabilizing hole 610 is opened on the side of the movable seat 200, and a stabilizing rod 600 is fixedly installed in the distribution box body 10. The stabilizing rod 600 is parallel to the reciprocating screw rod 100, and the stabilizing hole 610 and the stabilizing rod 600 are interlaced and matched.

[0057] The movable seat 200 has a block 620 slidably mounted on both sides thereof for contacting the contact rod 530. An air bag 630 is mounted inside the movable seat 200. The air bag 630 is a rubber air bag with a spring inside. An air guide tube 640 is arranged between the air bag 630 and the stabilizing hole 610. A piston block 650 is slidably mounted on one end of the air guide tube 640 adjacent to the stabilizing hole 610 for contacting the stabilizing rod 600. A compression spring 660 is mounted on the side of the block 620 for resetting the block.

[0058] When the movable seat 200 reaches one end of the reciprocating screw 100, the stopper 620 contacts the contact rod 530, so that the bracket rod 510 moves outward, the transmission mechanism 300 is unlocked, and the stopper 620 is also squeezed, so that the airbag 630 is squeezed, and the gas inside the airbag 630 flows to the air guide tube 640, so that the piston block 650 is pushed out, and the piston block 650 contacts the stabilizing rod 600, which greatly increases the sliding friction between the movable seat 200 and the stabilizing rod 600 at this time, thereby improving the stability of the movable seat 200 at this time. When the movable seat 200 moves back, the piston block 650, the airbag 630 and the stopper 620 are reset by the elastic force of the extrusion spring 660, and the bracket rod 510 is also reset by the reset spring 550.

[0059] In this embodiment: through the cooperation of the first rack 560, the double-meshing gear 570 and the second rack 580, when the movable seat 200 pushes the abutment rod 530, the bracket rods 510 on both sides move toward the outside of the box at the same time, ensuring that the transmission mechanism 300 on both sides of the reciprocating screw 100 is unlocked and locked at the same time. Moreover, through the setting of the stabilizing rod 600, the movable seat 200 remains vertical when the movable rod 400 flips over, and through the setting of the abutment block 620, the airbag 630 and the piston block 650, at the moment when the movable rod 400 flips over, the piston block 650 protrudes outward to abut the stabilizing rod 600, thereby enhancing the stability of the movable seat 200, reducing the wear on the thread of the reciprocating screw 100 and the loss of other parts caused by the vibration caused by the flipping of the movable rod 400, extending the service life of the parts, and improving the reliability of the automatic dynamic scanning detection of the detector 50, thereby extending the effectiveness of the detection method of this scheme.

[0060] Embodiment 4

[0061] This embodiment is intended to help solve the problem that when the moving rod 400 is flipped, a large shake will be generated, thereby affecting parts such as the detector 50. This embodiment is an improvement made on the basis of the second embodiment. Straight portions 410 are provided at both ends of the moving rod 400 to reduce the impact of the overall flipping of the moving rod 400 on the detector 50 and the movable seat 200.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fault detection device for a distribution box in operation, characterized in that: The invention comprises a docking seat (30), a distribution box body (10), a power connection metal end (43), a detector (50), a handheld detector (40), and a motor (44); the docking seat (30) comprises a socket (31) rotatably mounted on a side wall of the distribution box body (10); the socket (31) is provided with a docking groove (32) for plugging with the power connection metal end (43); a reciprocating screw rod (100) is rotatably mounted inside the distribution box body (10); the socket (31) and the reciprocating screw rod (100) are connected to each other. 00) are installed with a butt drive belt (33) for transmission at the ends thereof, both ends of the reciprocating screw rod (100) are located in the heat dissipation port (20), a moving rod (400) is installed in the distribution box body (10), a movable seat (200) is slidably matched on the reciprocating screw rod (100), a sliding ring (240) is provided at the bottom of the movable seat (200), the sliding ring (240) is slidably sleeved with the moving rod (400), and the detector (50) is installed on the side of the sliding ring (240); The handheld detector (40) comprises a handheld rod (41) for carrying the power-connecting metal end (43) and the motor (44); the motor (44) is mounted in the middle of the handheld rod (41); the power-connecting metal end (43) is arranged at one end of the handheld rod (41); and the other end of the handheld rod (41) is provided with an insulating handle (42) for a worker to hold. The moving rod (400) is configured as a wave-shaped moving rod, a swing sleeve (220) is connected to the bottom of the movable seat (200), a protruding rod (230) connected to the sliding ring (240) is inserted into the swing sleeve (220), and a mounting rod (250) is connected between the sliding ring (240) and the detector (50); One end of the reciprocating screw rod (100) adjacent to the docking seat (30) is key-connected to a first gear (110), and the other end of the reciprocating screw rod (100) is key-connected to a second gear (120); a transmission mechanism (300) is provided on the inner wall of the distribution box body (10); the first gear (110) and the second gear (120) are connected to the transmission mechanism (300) to achieve transmission connection with the moving rod (400); when the movable seat (200) moves to the two ends of the reciprocating screw rod (100), the moving rod (400) flips; The transmission mechanism (300) comprises a first transmission wheel (320) and a second transmission wheel (350) rotatably mounted on the inner wall of the distribution box body (10); the first transmission wheel (320) and the second transmission wheel (350) are commonly connected to a transmission belt (340); a transmission gear (310) for meshing with the first gear (110) and the second gear (120) is coaxially mounted on the side of the first transmission wheel (320); the transmission gear (310) and the first transmission wheel (320) are rotatably matched, and a spiral spring (330) is mounted between the transmission gear (310) and the first transmission wheel (320); A limiting mechanism (500) for gap locking the first transmission wheel (320) is arranged in the middle of the distribution box body (10), the limiting mechanism (500) comprises a bracket rod (510) located outside the distribution box body (10), one end of the bracket rod (510) is connected to the limiting rod (520), a limiting hole (321) is provided on the side of the first transmission wheel (320), the limiting rod (520) is intermittently plugged into the limiting hole (321), the other end of the bracket rod (510) is connected to a resisting rod (530) for contacting the movable seat (200), the resisting rod (530) is connected to a vertical rod (540), a return spring (550) is arranged on the outer sleeve of the resisting rod (530), and the return spring (550) is located between the inner wall of the distribution box body (10) and the vertical rod (540); A second rack (580) is connected to the top of the vertical rod (540) adjacent to the first gear (110), and a first rack (560) is connected to the top of the vertical rod (540) adjacent to the second gear (120). A dust cover (590) is fixedly installed inside the distribution box body (10). Both the second rack (580) and the first rack (560) are slidably matched with the dust cover (590), and a double-meshing gear (570) is rotatably installed inside the dust cover (590) and meshes with the second rack (580) and the first rack (560) at the same time. The sliding ring (240) is rotatably matched with the movable seat (200); a stabilizing hole (610) is provided on the side of the movable seat (200); a stabilizing rod (600) is fixedly installed in the distribution box body (10); the stabilizing rod (600) is parallel to the reciprocating screw rod (100); and the stabilizing hole (610) is interlaced with the stabilizing rod (600); Blocks (620) for contacting the contact rod (530) are slidably mounted on both sides of the movable seat (200); an air bag (630) is mounted inside the movable seat (200); an air guide tube (640) is arranged between the air bag (630) and the stabilizing hole (610); a piston block (650) for contacting the stabilizing rod (600) is slidably mounted on one end of the air guide tube (640) adjacent to the stabilizing hole (610); and a compression spring (660) for resetting the block (620) is mounted on the side.

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