Power distribution terminal with self-checking function
By setting up partitions and elastic contact probes in the distribution terminal, the isolation problem of the detection device is solved, higher detection accuracy and maintenance convenience are achieved, and the stability and detection efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202510921405.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2025-09-16
AI Technical Summary
The detection devices of traditional distribution terminals lack effective isolation in their structural design, resulting in heat and interference factors during instrument operation affecting the accuracy of the test results. The contact between the probe and the terminal is poor, which is prone to poor contact or damage. The detection efficiency is low and the operation is cumbersome, affecting the stability and maintenance convenience of the equipment.
A partition plate is used to divide the indicator panel and detection structure into upper and lower layers. Elastic contact probes and terminals are used, combined with signal light feedback and lifting motor adjustment terminals to achieve contact detection and convenient maintenance.
It improves the independence and detection accuracy of the self-test equipment, avoids poor contact and damage caused by excessive pressing, enhances detection efficiency and maintenance convenience, and ensures contact detection effect.
Smart Images
Figure CN120657564A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power distribution terminals, and in particular to a power distribution terminal with a self-checking function. Background Art
[0002] Distribution terminals are a general term for various remote monitoring and control units installed in medium-voltage distribution networks. They are primarily installed in distribution switches, distribution transformers, distributed energy resources, ring main units, distribution substations, and other locations. They are the core equipment for monitoring, controlling, and troubleshooting distribution network operations.
[0003] Existing technical means for self-testing the input power supply voltage and current of distribution terminals mainly rely on current transformers and voltage transformers for detection. The current transformer converts large current into small current, and the voltage transformer converts high voltage into low voltage, which are respectively supplied to the measuring instrument or protection device of the distribution terminal to achieve indirect measurement of the input power supply voltage and current. The measuring instrument or protection device calculates the actual voltage and current values based on the small signal output by the transformer, thereby realizing the self-test function.
[0004] In the field of power distribution terminal self-testing, traditional testing methods mainly rely on current transformers and voltage transformers to implement self-testing of the power input of the distribution terminal. When the circuit experiences overvoltage, overtemperature, and other conditions, the sensitivity of current transformers and voltage transformers will be significantly reduced, or even damaged, resulting in inaccurate test results, affecting the correct assessment of the distribution terminal status, and failing to meet the requirements of high-precision and high-reliability testing. Traditional testing devices lack effective isolation of internal components in their structural design. The indicator panel and detection structure are often located in the same chamber. Heat generated by instrument operation and other interference factors will affect the detection structure, reducing the independence of the self-test equipment and thus affecting the accuracy of the self-test results. The contact method between the probe and the terminal is not optimized, which is prone to poor contact or excessive pressure on the terminal to damage the terminal. Good contact cannot be guaranteed, affecting the stability and reliability of the test data and the long-term stable operation of the equipment. Detection efficiency also needs to be improved. The testing process is not convenient, and the operation is cumbersome when the air protector wiring needs to be adjusted and maintained, which affects the maintenance convenience and overall performance of the equipment. Summary of the Invention
[0005] The purpose of the present invention is to provide a distribution terminal with a self-test function to solve the following technical problems: the traditional detection device lacks effective isolation of internal components in structural design, the indicator panel and the detection structure are often in the same chamber, the heat and other interference factors generated during instrument operation will affect the detection structure, reduce the independence of the self-test equipment, and thus affect the accuracy of the self-test results. The contact method between the probe and the terminal is not optimized, and poor contact or excessive pressure on the terminal may damage the terminal. A good contact state cannot be guaranteed, which affects the stability and reliability of the test data and is not conducive to the long-term stable operation of the equipment. The detection efficiency needs to be improved, the detection process is not convenient enough, and when the wiring of the air protector needs to be adjusted and maintained, the operation is relatively cumbersome, affecting the maintenance convenience and overall performance of the equipment.
[0006] The purpose of the present invention can be achieved through the following technical solutions:
[0007] A power distribution terminal with a self-test function includes a cabinet, a partition plate is provided in the middle of the cabinet, an indicator panel is installed on the top of the cabinet, the indicator panel is located above the partition plate, a mounting bracket is installed on the inner wall of the cabinet, and an air protector is buckled on the mounting bracket. The partition plate of the cabinet divides the detection structure and the indicator panel into upper and lower layers. The heat and other interference factors generated by the operation of the instrument in the indicator panel will not affect the detection structure in the bottom chamber, thereby improving the independence of the self-test equipment and ensuring the accuracy of the self-test effect.
[0008] A lifting structure is installed in the bottom chamber of the cabinet, and a detection structure is installed on the lifting plate of the lifting structure. The detection structure is used to detect the power status of the air protector. A multifunctional power meter, a control box and a storage battery are installed in the bottom chamber of the cabinet. When the voltage, current and output power of the distribution power supply are detected, the connection terminals connecting the power supply and the air protector are contact-tested through the detection structure to realize the detection of the voltage, current and power of the input power supply, thereby improving the detection efficiency and accuracy.
[0009] A detection structure is mounted on the outer surface of the swing plate in the detection structure, and a probe in the detection structure contacts and acts on the connection terminal of the air protector;
[0010] The detection structure includes a detection tube, which is fixed on the outer surface of the swing disk, a probe is slidably provided on the top of the detection tube, a fixed disk is fixed in the middle of the cavity of the detection tube, a positioning hole is opened inside the fixed disk, a positioning rod is inserted in the positioning hole, a second spring is sleeved on the outside of the positioning rod, and the two ends of the second spring are respectively fixed on the bottom side of the probe and the top side of the fixed disk, a first trigger electrode is fixed on the bottom end of the probe in the vertical direction, a second trigger electrode is fixed on the top side of the fixed disk, and a signal light is fixed on the outside of the detection tube, and the signal light is used to display the contact signal between the probe and the terminal of the air protector.
[0011] As a further solution of the present invention: the detection structure also includes a connecting wire, a notch is formed at the top of the detection tube, a connecting wire is connected to one side of the middle of the probe, the connecting wire is slidably arranged in the notch, a wire hole is provided in the middle of the detection tube, the first trigger electrode and the second trigger electrode are arranged vertically along the same straight line, the first trigger electrode slides and penetrates into the cavity of the second trigger electrode, and the outer wall of the first trigger electrode slides and contacts the inner wall of the second trigger electrode, the first trigger electrode, the second trigger electrode, the signal light and the storage battery are electrically connected, and the signal light is connected to the control box via a signal. During the detection process, when the probe and the air protector terminal are set to elastic contact, first, it can ensure that the probe will not have poor contact with the air protector terminal when contacting, thereby avoiding inaccurate detection data; second, the power-on of the signal light can timely feedback a signal, avoiding excessive operation of the electric push rod. After the power-on signal of the signal light is fed back, the electric push rod stops working in time, ensuring that the probe and the air protector terminal are in good condition and the integrity of the terminal is not affected by excessive pressure, thereby achieving a better contact detection effect.
[0012] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.
[0013] As a further solution of the present invention: a gear is fixed to one end of the swing shaft, an electric push rod is fixed to one side of the slide, a door-shaped push frame is fixed to one end of the electric push rod, a rack is fixed to the bottom side of the horizontal arm of the push frame, the rack and the gear are engaged with each other, and the push frame slides along a straight line. With the cooperation of the rack, the gear can be driven to rotate, thereby realizing the rotation of the swing shaft. With the cooperation of the rotation of the swing shaft, the swing seat can be realized to rotate, thereby adjusting the vertical probe to a straight state.
[0014] As a further solution of the present invention: a limit cover is installed on the outer side of the swing seat, and the limit cover and the swing shaft are coaxial structures. A spring is fixedly connected between the inner side of the limit cover and the outer side of the swing shaft. After the detection is completed, the electric push rod is gradually extended. Under the rebound action of the first spring, the movable block can slide along the slide rod. After the first spring is completely released, as the electric push rod is further extended, the push frame is pushed to slide. Under the cooperation of the rack and the gear, the swing shaft can be driven to reverse, thereby realizing the reset of the swing seat. When the exploration structure rotates from a vertical state to a horizontal state, the spring in the swing shaft rotates and contracts. During the reset process of the swing seat, it is carried out simultaneously under the auxiliary rebound of the spring.
[0015] A screw hole is provided at the bottom of the swing seat, and the locking screw is assembled in the screw hole. The end face of the locking screw is squeezed on the side of the movable block, and a swing seat is slid on the movable block, wherein the swing seat is locked and fixed by the locking screw after sliding, thereby realizing a splicing combination of the swing seat and the movable block. The swing seat and the movable block are designed as splicing components, which can make it more convenient to disassemble and replace the structure on the swing seat.
[0016] As a further solution of the present invention: the lifting structure includes a lifting plate, a lifting rod is fixed on the bottom side of the lifting plate, a socket is opened on the bottom side of the chamber cavity of the cabinet, the bottom end of the lifting rod is slidably inserted into the socket, and an assembly groove is provided on the outer side of the cabinet, a lifting motor is installed in the assembly groove, the output shaft of the lifting motor passes through the cavity wall of the cabinet, and a lifting screw is connected to the output shaft of the lifting motor, and the other end of the lifting screw is rotatably installed on the other cavity wall of the cabinet.
[0017] As a further solution of the present invention: the lifting structure also includes a slider, which is threadedly mounted on the lifting screw, and a connecting seat is fixed to the bottom side of the lifting screw, and a lifting rod is rotatably connected in the connecting seat, and the bottom end of the lifting rod is hinged to the top side of the slider, and the lifting motor is connected to the control box through a control line, and the storage battery powers the lifting motor. During the movement of the detection structure, when it is necessary to adjust the wiring harness of the air protector, the pin in the installation slot is pulled up to separate the bottom end of the pin from the pin hole, and with the cooperation of the damping shaft, the opening and closing frame can be pulled outward to swing, and the lower chamber of the cabinet is opened. The lifting motor is operated to drive the lifting screw to rotate, and with the cooperation of the lifting rod, the lifted lifting plate can be gradually lowered, thereby exposing the wiring terminals of the air protector, so that the wiring of the air protector can be adjusted and maintained.
[0018] As a further solution of the present invention: an opening and closing frame is installed at the bottom chamber opening of the cabinet through a damping shaft, an F-shaped mounting groove is provided on the bottom side of the opening and closing frame, a hole is provided at the bottom of the mounting groove, a latch is assembled in the mounting groove, the bottom end of the latch passes through the hole, a pin hole opening upward is provided on the chamber opening of the cabinet, the bottom end of the latch is fitted into the pin hole, and a heat dissipation hole is provided on the side wall of the cabinet. When no maintenance is performed, the bottom end of the latch is inserted into the pin hole, and protection of the internal chamber of the cabinet is achieved with the assistance of the opening and closing frame.
[0019] As a further solution of the present invention: a second wire hole is opened on the partition plate in the middle of the cabinet, and a first wire hole is opened in the bottom chamber of the cabinet. The first wire hole and the second wire hole are used for line connection to facilitate the routing of internal electrical components.
[0020] As a further solution of the present invention: the indicator panel includes a voltmeter, an ammeter, an active power meter, a power factor meter, a frequency meter, an watt-hour meter and line indicator lights. The voltmeter is used to measure the voltage value in the distribution line, the ammeter is used to measure the current in the line, the active power meter is used to measure the active power actually consumed in the line, the power factor meter is used to measure the power factor of the line, the frequency meter is used to measure the frequency of the power system, and the watt-hour meter is used to measure the consumption of electric energy, which can facilitate data control of the distribution terminal for the output cable.
[0021] Beneficial effects of the present invention:
[0022] During the self-test process, a partition is installed on the cabinet to separate the indicator panel and the detection structure into upper and lower layers, effectively preventing the heat generated by the instrument operation in the indicator panel and other interference factors from affecting the detection structure, thereby improving the independence of the self-test equipment and ensuring the accuracy of the self-test results.
[0023] The probe and the wiring terminal of the air protector are set to elastic contact, which can not only avoid poor contact and ensure the accuracy of the test data, but also timely feedback the contact signal through the signal light to prevent the electric push rod from over-operating, ensure the good contact state between the probe and the wiring terminal, and achieve better contact detection effect. The probe and the wiring terminal are set to elastic contact, which can effectively avoid damage to the wiring terminal due to excessive pressing during the detection process, and ensure the integrity of the wiring terminal;
[0024] The signal detected by the probe is transmitted to the multi-function power meter through the line. The meter then transmits the data to the control box. The control box sends the data to the data terminal and receives the self-test command. At the same time, the feedback of the signal light can promptly inform the maintenance personnel of the detection status, making it easier to find and deal with problems in time, further improving the detection accuracy.
[0025] The detection structure in the detection structure detects the connection terminals between the power supply and the air protector through contact detection, thereby realizing the detection of the voltage, current and power of the input power supply, thereby improving the detection efficiency;
[0026] When the air protector wiring needs to be adjusted or maintained, the lifting motor is operated to drive the lifting screw to rotate. With the cooperation of the lifting rod, the lifting plate can be gradually lowered, thereby exposing the air protector wiring terminals, making it easier for maintenance personnel to operate. After the maintenance and inspection are completed, the lifting motor is reversed to lift the lifting plate again to ensure the effectiveness of the detection structure triggering the contact self-test of the air protector wiring terminals.
[0027] The present invention also performs contact detection on the air protector terminals through the detection structure, realizes the combination of multiple detection methods, improves the accuracy and reliability of self-detection, and can avoid the traditional detection operation using current transformers and voltage transformers, and avoids the inaccurate detection effect caused by the decrease in detection sensitivity due to overvoltage and overtemperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The present invention will be further described below with reference to the accompanying drawings.
[0029] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;
[0030] Figure 2 This is a schematic diagram of the structure of the integral opening and closing frame of the present invention after it is opened;
[0031] Figure 3 This is a schematic diagram of a half-section structure of a cabinet of the present invention;
[0032] Figure 4 It is a schematic diagram of the vertical state structure of the detection structure in the present invention;
[0033] Figure 5This is a schematic diagram of the detection structure in the flat state in the present invention;
[0034] Figure 6 It is a schematic diagram of the detection structure of the present invention;
[0035] Figure 7 It is a diagram of the middle connection structure of the detection structure of the present invention;
[0036] Figure 8 This is a structural diagram showing the positions of the first spring and the mainspring in the detection structure of the present invention;
[0037] Figure 9 It is a half-section structural diagram of the exploration structure in the present invention;
[0038] In the figure: 1. Cabinet; 2. Indicator panel; 3. Air protector; 4. Opening and closing frame; 5. Heat dissipation hole; 6. Detection structure; 7. Mounting slot; 8. Pin hole; 9. Lifting structure; 10. Latch; 11. Multi-function power meter; 12. Control box; 13. Mounting frame; 14. First wire hole; 15. Second wire hole; 91. Connecting seat; 92. Lifting rod; 93. Lifting motor; 94. Lifting screw; 95. Slider; 96. Lifting rod; 97. Lifting plate; 61. Slide rail; 62. First spring; 63. Sliding rod; 64. Movable block; 65. Swinging plate; 66. Detection structure; 67. Electric push rod; 68. Slide plate; 69. Push frame; 610. Rack; 611. Swinging seat; 612. Locking screw; 613. Gear; 614. Swinging shaft; 615. Limiting cylinder; 616. Telescopic rod; 617. Limiting cover; 618. Spring; 661. Probe; 662. Connecting wire; 663. First trigger electrode; 664. Second trigger electrode; 665. Signal light; 666. Fixed plate; 667. Second spring; 668. Positioning rod; 669. Detection cylinder. DETAILED DESCRIPTION
[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.
[0040] See also Figure 1-2As shown, the present invention is a power distribution terminal with a self-test function, comprising a cabinet 1, a partition plate is provided in the middle of the cabinet 1, an indicator panel 2 is installed on the top of the cabinet 1, the indicator panel 2 is located above the partition plate, a mounting bracket 13 is installed on the inner wall of the cabinet 1, an air protector 3 is buckled on the mounting bracket 13, the partition plate of the cabinet 1 divides the detection structure 6 and the indicator panel 2 into upper and lower layers, the heat and other interference factors generated by the instrument operation in the indicator panel 2 will not affect the detection structure 6 in the bottom chamber, thereby improving the independence of the self-test equipment and ensuring the accuracy of the self-test effect;
[0041] See also Figure 2-3 As shown, a lifting structure 9 is installed in the bottom chamber of the cabinet 1, and a detection structure 6 is installed on the lifting plate 97 in the lifting structure 9. The detection structure 6 is used to detect the power status of the air protector 3. A multifunctional power meter 11, a control box 12 and a storage battery are installed in the bottom chamber of the cabinet 1. When the voltage, current and output power of the distribution input power are detected, the connection terminals connecting the power supply and the air protector 3 are contact-type detected through the detection structure 6, thereby realizing the detection of the voltage, current and power of the input power supply, thereby improving the detection efficiency and accuracy.
[0042] See also Figure 3-4 As shown, the outer surface of the swing disk 65 in the detection structure 6 is equipped with a detection structure 66, and the probe 661 in the detection structure 66 contacts the terminal of the air protector 3; the detection structure 6 includes a movable block 64, which is located above the lifting plate 97. A swing seat 611 is slidably mounted on the movable block 64, and a swing shaft 614 is rotatably mounted in the swing seat 611. The swing disk 65 is installed on the outer side of the middle of the swing shaft 614, and a positioning hole is opened in the movable block 64. Figure 7 、 Figure 8 As shown, the slide rod 63 is fixed to one side of the side wall of the lifting plate 97, one end of the slide rod 63 is set through the positioning hole, and the first spring 62 is sleeved on the outside of one end of the slide rod 63. The two ends of the first spring 62 are respectively fixed to the opposite surfaces of the lifting plate 97 and the movable block 64. The inner side of the lifting plate 97 is fixed with a slide rail 61, and a slide plate 68 is slidably installed in the slide rail 61. A limiting cylinder 615 is fixed to one side of the slide plate 68, and a telescopic rod 616 is fixed to one side of the swing seat 611. One end of the telescopic rod 616 is inserted and installed inside one end of the limiting cylinder 615. Please refer to Figure 4-5 As shown, the probe 661 is connected to the multifunctional power meter 11 through lines. The multifunctional power meter 11 transmits data to the control box 12. The control box 12 sends the data to the data terminal and receives the self-test command of the data terminal. The control box 12 controls the electric push rod 67.
[0043] See Figure 6As shown, a gear 613 is fixed to one end of the swing shaft 614, an electric push rod 67 is fixed to one side of the slide 68, a door-shaped push frame 69 is fixed to one end of the electric push rod 67, and a rack 610 is fixed to the bottom side of the horizontal arm of the push frame 69. The rack 610 and the gear 613 are engaged with each other, and the push frame 69 slides in a straight line. With the cooperation of the rack 610, the gear 613 can be driven to rotate, thereby realizing the rotation of the swing shaft 614. With the rotation cooperation of the swing shaft 614, the rotation of the swing disk 65 can be realized, wherein the detection structure 66 is in a vertical state, wherein the probe 661 is vertically upward, which is convenient for maintenance personnel to maintain. After the swing disk 65 swings, the probe 661 faces the terminal of the air protector 3, and can realize contact detection after movement.
[0044] See Figure 8 As shown, a limit cover 617 is installed on the outer side of the swing seat 611. The limit cover 617 and the swing shaft 614 are coaxial structures. A spring 618 is fixed between the inner side of the limit cover 617 and the outer side of the swing shaft 614. After the detection is completed, when the electric push rod 67 is extending and resetting, in the first half of the extension, the first spring 62 has sufficient rebound force to ensure that the gear 613 and the push frame 69 do not move relative to each other. Under the rebound force of the first spring 62, the movable block 64 can slide along the slide rod 63. After the first spring 62 is completely released, as the electric push rod 67 further extends, the push frame 69 is pushed to slide. Under the cooperation of the rack 610 and the gear 613, the swing shaft 614 can be driven to reverse, thereby realizing the reset of the swing plate 65.
[0045] When the detection structure 66 rotates from the vertical state to the horizontal state, the spring 618 in the swing shaft 614 rotates and contracts, and the swing plate 65 is reset while being assisted by the rebound of the spring 618 .
[0046] See also Figure 6 、 Figure 8 As shown, a screw hole is provided at the bottom of the swing seat 611, and a locking screw 612 is assembled in the screw hole. The end face of the locking screw 612 is squeezed on the side of the movable block 64, and the swing seat 611 slides on the movable block 64, wherein the swing seat 611 is locked and fixed by the locking screw 612 after sliding, thereby realizing the splicing combination of the swing seat 611 and the movable block 64. The swing seat 611 and the movable block 64 are designed as splicing components, which can make it more convenient to disassemble and replace the structure on the swing seat 611; after receiving the instruction, the control box 12 controls the electric push rod 67 to retract and pulls the push frame 69 to slide in a straight line.
[0047] The instructions received by the control box 12 can control the driving operation of the electric push rod 67. When the electric push rod 67 is performing the contraction operation, it can pull the push frame 69 to slide in a straight line. With the cooperation of the rack 610, it can drive the gear 613 to rotate, thereby realizing the rotation of the swing shaft 614. With the rotation cooperation of the swing shaft 614, the rotation of the swing disk 65 can be realized, so that the detection structure 66, which is originally in a straight position, swings 90°, so that the probe 661 of the detection structure 66 can face the wiring terminal at the bottom of the air protector 3. By connecting the probe 661 to the wiring terminal, the multi-function power meter 11 is used to detect the voltage, current and power of the input power supply.
[0048] See Figure 8-9 As shown, the detection structure 66 includes a detection tube 669, which is fixed on the outer surface of the swing disk 65, and a probe 661 is slidably provided on the top of the detection tube 669. A fixed disk 666 is fixed in the middle of the cavity of the detection tube 669, and a positioning hole is provided inside the fixed disk 666. A positioning rod 668 is inserted into the positioning hole, and a second spring 667 is sleeved on the outside of the positioning rod 668. The two ends of the second spring 667 are respectively fixed on the bottom side of the probe 661 and the top side of the fixed disk 666. The bottom end of the probe 661 is fixed with a first trigger electrode 663 in the vertical direction, and the top side of the fixed disk 666 is fixed with a second trigger electrode 664. A signal light 665 is fixed on the outside of the detection tube 669, and the signal light 665 is used to display the contact signal between the probe 661 and the terminal of the air protector 3.
[0049] The detection structure 66 also includes a connecting wire 662. A notch is provided at the top of the detection tube 669. The connecting wire 662 is connected to one side of the middle of the probe 661. The connecting wire 662 is slidably arranged in the notch. A wire hole is provided in the middle of the detection tube 669. The wire hole is for facilitating the installation of wires for connecting the first trigger electrode 663 and the second trigger electrode 664 to the storage battery outside the detection tube 669. The first trigger electrode 663 and the second trigger electrode 664 are arranged vertically along the same straight line. The first trigger electrode 663 slides and is inserted into the second trigger electrode 664. The outer wall of the first trigger electrode 663 is in sliding contact with the inner wall of the second trigger electrode 664. The first trigger electrode 663, the second trigger electrode 664, the signal light 665 and the storage battery are electrically connected. The signal light 665 is connected to the control box 12 through a signal. As the electric push rod 67 contracts, the swing seat 611 first contacts the terminal of the air protector 3. In order to ensure the effectiveness of the contact between the swing seat 611 and the terminal, as the electric push rod 67 continues to pull the movable block 64 toward the air protector 3, the probe tube 669 and the probe 661 slide relative to each other, the second spring 667 is gradually compressed, and the first trigger electrode 663 slides into the second trigger electrode 664 to achieve contact between the first trigger electrode 663 and the second trigger electrode 664. After the first trigger electrode 663 and the second trigger electrode 664 are in contact, the signal light 665 is in a flashing state, wherein the power-on signal of the signal light 665 can be received by the control box 12, indicating that the contact between the probe 661 and the terminal is effective. During the detection process, the probe 661 is connected to the terminal of the air protector 3. When the sub-contact is set to elastic contact, first, it can ensure that the probe 661 will not have poor contact when contacting the terminal of the air protector 3, thereby avoiding inaccurate detection data; second, the power-on of the signal light 665 can timely feedback the signal to avoid excessive operation of the electric push rod 67. After the power-on signal of the signal light 665 is fed back, the electric push rod 67 stops working in time to ensure that the probe 661 and the terminal of the air protector 3 are in good condition, and the integrity of the terminal will not be affected by excessive pressure, thereby achieving better contact detection effect.
[0050] See Figure 3 As shown, the lifting structure 9 includes a lifting plate 97, a lifting rod 96 is fixed on the bottom side of the lifting plate 97, a socket is provided on the bottom side of the cavity of the cabinet 1, the bottom end of the lifting rod 96 is slidably inserted into the socket, and an assembly groove is provided on the outer side of the cabinet 1, a lifting motor 93 is installed in the assembly groove, the output shaft of the lifting motor 93 passes through the cavity wall of the cabinet 1, and a lifting screw 94 is connected to the output shaft of the lifting motor 93, and the other end of the lifting screw 94 is rotatably installed on the other cavity wall of the cabinet 1.
[0051] The lifting structure 9 also includes a slider 95, which is threadedly mounted on the lifting screw 94. A connecting seat 91 is fixed to the bottom side of the lifting screw 94. A lifting rod 92 is rotatably connected in the connecting seat 91. The bottom end of the lifting rod 92 is hinged to the top side of the slider 95. The lifting motor 93 is connected to the control box 12 through a control line, and the storage battery supplies power to the lifting motor 93. During the movement of the detection structure 6, when it is necessary to adjust the wiring harness of the air protector 3, the pin 10 in the mounting slot 7 is pulled up to separate the bottom end of the pin 10 from the pin hole 8, and the damping shaft is engaged. Down, pull the opening and closing frame 4 to swing outward, and ensure that the opening and closing frame 4 does not fall automatically, the lower chamber of the cabinet 1 is opened, and the lifting motor 93 is operated to drive the lifting screw 94 to rotate. With the cooperation of the lifting rod 92, the lifted lifting plate 97 can be gradually lowered, thereby exposing the wiring terminals of the air protector 3, so as to adjust and maintain the wiring of the air protector 3. After completing the maintenance and inspection, the lifting motor 93 operates in reverse and lifts the lifting plate 97 again, which can ensure the effectiveness of the detection structure 6 in triggering the contact self-test of the wiring terminals of the air protector 3.
[0052] See Figure 2-3 As shown, an opening and closing frame 4 is installed at the bottom chamber opening of the cabinet 1 through a damping shaft, an F-shaped mounting groove 7 is provided on the bottom side of the opening and closing frame 4, a hole is provided at the bottom of the mounting groove 7, a latch 10 is assembled in the mounting groove 7, the bottom end of the latch 10 passes through the hole, a pin hole 8 with an opening facing upward is provided on the chamber opening of the cabinet 1, the bottom end of the latch 10 is fitted in the pin hole 8, after the latch 10 is inserted into the pin hole 8, the opening and closing frame 4 is closed, the exposed chamber port is sealed, and the internal structure is protected.
[0053] See Figure 3 As shown, a second wire hole 15 is provided on the partition in the middle of the cabinet 1, and a first wire hole 14 is provided in the bottom chamber of the cabinet 1. The first wire hole 14 and the second wire hole 15 are used for line connection, which can facilitate the routing of electrical components in the cabinet 1. The side wall of the cabinet 1 is provided with a heat dissipation hole 5 to facilitate heat dissipation.
[0054] See Figure 1 As shown, the indicator panel 2 includes a voltmeter, an ammeter, an active power meter, a power factor meter, a frequency meter, an watt-hour meter and line indicator lights. The voltmeter is used to measure the voltage value in the distribution line, the ammeter is used to measure the current in the line, the active power meter is used to measure the active power actually consumed in the line, the power factor meter is used to measure the power factor of the line, the frequency meter is used to measure the frequency of the power system, and the watt-hour meter is used to measure the consumption of electric energy. It can monitor each line when the distribution terminal is distributing operations.
[0055] Working principle: When testing the voltage, current and output power of the distribution power supply, in order to realize the self-test of the input power supply conveniently and quickly, during the test, the connection terminals connecting the power supply and the air protector 3 are tested in a contact manner through the detection structure 6;
[0056] During the detection process, the instructions received by the control box 12 can control the driving operation of the electric push rod 67. When the electric push rod 67 is performing the contraction operation, the push frame 69 can be pulled to slide in a straight line. With the cooperation of the rack 610, the gear 613 can be driven to rotate, thereby realizing the rotation of the swing shaft 614. With the rotation cooperation of the swing shaft 614, the swing plate 65 can be rotated, so that the detection structure 66, which is originally straight, is swung 90°. Then, the probe 661 of the detection structure 66 can face the wiring terminal at the bottom of the air protector 3. Through the connection between the swing seat 611 and the wiring terminal, the voltage, current and power of the input power supply can be detected using the multi-function power meter 11.
[0057] During the docking and contact process between the probe 661 and the air protector 3, through the continuous operation of the electric push rod 67, when the detection structure 66 swings 90°, the side of the push frame 69 can act on the gear 613 to realize the linear pulling operation of the gear 613. At this time, the gear 613 can drive the entire structure installed on the movable block 64 to slide along the slide rod 63 after being subjected to force. In the process of the movable block 64 sliding along the slide rod 63, the first spring 62 can be compressed, and the telescopic rod 616 is retracted along the limit cylinder 615. In the process of the movable block 64 gradually sliding along the slide rod 63, the probe 661 is brought close to the wiring terminal of the air protector 3.
[0058] During the contact process between the probe 661 and the air protector 3, in order to ensure the accuracy of the docking, first, during the debugging of the self-test equipment at the power distribution terminal, it is necessary to slide the detection structure 66 to a position corresponding to the terminal of the air protector 3. During the debugging process, the slide plate 68 is pushed to slide along the slide rail 61. Under the auxiliary connection of the limit cylinder 615 and the telescopic rod 616, the swing seat 611 can be driven to slide synchronously along the movable block 64. Due to the action of the internal damping of the slide plate 68, its sliding position is relatively stable and it will not automatically slide sideways again, thereby ensuring the stability of the overall self-test structure.
[0059] A swing seat 611 slides on the movable block 64, wherein the swing seat 611 is locked and fixed by a locking screw 612 after sliding, thereby realizing a splicing combination of the swing seat 611 and the movable block 64. The swing seat 611 and the movable block 64 are designed as a splicing component, which can be more conveniently installed on the swing seat 611 for disassembly and replacement. After the swing seat 611 is fixed, it is necessary to ensure that the gear 613 and the rack 610 in the push frame 69 are engaged to ensure the transmission effect of the push frame 69 operation, and at the same time ensure that the probe 661 on the detection structure 66 is flatly docked with the terminal of the air protector 3;
[0060] As the electric push rod 67 contracts, the swing seat 611 first contacts the terminal block of the air protector 3. In order to ensure the effectiveness of the contact between the swing seat 611 and the terminal block, as the electric push rod 67 continues to pull the movable block 64 toward the air protector 3, relative sliding occurs between the probe tube 669 and the probe 661, and the second spring 667 is gradually compressed. The first trigger electrode 663 will slide and insert into the second trigger electrode 664, realizing the contact between the first trigger electrode 663 and the second trigger electrode 664. After the two trigger electrodes 664 make contact, the signal light 665 flashes, wherein the power-on signal of the signal light 665 can be received by the control box 12, indicating that the contact between the probe 661 and the terminal block is effective. During the detection process, when the probe 661 and the terminal block of the air protector 3 are set to elastic contact, firstly, it can ensure that the probe 661 will not have poor contact when in contact with the terminal block of the air protector 3, thereby avoiding inaccurate detection data; secondly, the power-on of the signal light 665 can provide timely feedback signals to avoid excessive operation of the electric push rod 67. After the power-on signal of the signal light 665 is fed back, the electric push rod 67 stops operating in time to ensure that the probe 661 and the terminal block of the air protector 3 are in good condition and that the integrity of the terminal block is not affected by excessive pressure, thereby achieving a better contact detection effect;
[0061] After the test is completed, the electric push rod 67 gradually extends. Under the rebound effect of the first spring 62, the movable block 64 can slide along the slide rod 63. After the first spring 62 is completely released, the electric push rod 67 further extends, pushing the push frame 69 to slide. Under the cooperation of the rack 610 and the gear 613, the swing shaft 614 can be driven to reverse, thereby achieving the reset of the swing plate 65.
[0062] When the detection structure 66 rotates from the vertical state to the horizontal state, the spring 618 in the swing shaft 614 rotates and contracts, and during the reset process of the swing plate 65, it is also carried out with the assistance of the rebound of the spring 618;
[0063] During the self-test process, conventional self-testing is performed by connecting current transformers and voltage transformers to the input power supply of the distribution terminal. The function of current transformers and voltage transformers is to convert high voltage and large current into small signals suitable for instrument measurement. However, during long-term operation of current transformers and voltage transformers, the sensitivity of the induction will decrease due to circuit overload, overvoltage and overheating, and they are easily damaged. As a result, they cannot stably and effectively perform long-term self-test of the voltage and current of the terminal input power supply.
[0064] In order to improve the accuracy of the self-test, the cabinet body 1 is configured as two upper and lower chambers, with the detection structure 6 and the indicator panel 2 located in the upper and lower layers of the cabinet body 1, respectively. With this configuration, the heat and other interference factors generated by the instrument operation in the indicator panel 2 will not affect the detection structure 6 in the bottom chamber, thereby better ensuring the independence of the self-test equipment and thus ensuring the accuracy of the self-test effect.
[0065] During the movement of the detection structure 6, when it is necessary to adjust the wiring harness of the air protector 3, by pulling up the latch 10 in the mounting slot 7, the bottom end of the latch 10 is separated from the pin hole 8. With the cooperation of the damping shaft, the opening and closing frame 4 can be pulled to swing outward, and the lower chamber of the cabinet 1 is opened. The lifting motor 93 is operated to drive the lifting screw 94 to rotate. With the cooperation of the lifting rod 92, the lifting plate 97 can be gradually lowered, thereby exposing the wiring terminals of the air protector 3, so that the wiring of the air protector 3 can be adjusted and maintained;
[0066] After the maintenance and inspection are completed, the lifting motor 93 operates in the reverse direction to lift the lifting plate 97 again, which can ensure the effectiveness of the detection structure 6 triggering the contact self-test of the air protector 3 terminal.
[0067] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims
1. A power distribution terminal with a self-checking function, characterized in that: The cabinet (1) comprises a cabinet body (1), a partition plate is provided in the middle of the cabinet body (1), an indicator panel (2) is installed on the top of the cabinet body (1), the indicator panel (2) is located above the partition plate, a mounting frame (13) is installed on the inner wall of the cabinet body (1), and an air protector (3) is buckled on the mounting frame (13); A lifting structure (9) is installed in the bottom chamber of the cabinet (1); a detection structure (6) is installed on the lifting plate (97) in the lifting structure (9); the detection structure (6) is used to detect the power status of the air protector (3); and a multifunctional power meter (11), a control box (12) and a storage battery are installed in the bottom chamber of the cabinet (1); A detection structure (66) is mounted on the outer surface of the swing disk (65) in the detection structure (6), and a probe (661) in the detection structure (66) contacts and acts on the connection terminal of the air protector (3); The detection structure (66) includes a detection tube (669), which is fixed on the outer side of the swing plate (65), and a probe (661) is slidably provided on the top of the detection tube (669). A fixed plate (666) is fixed in the middle of the cavity of the detection tube (669), and a positioning hole is provided inside the fixed plate (666), and a positioning rod (668) is inserted into the positioning hole. A second spring (667) is sleeved on the outside of the positioning rod (668). The two ends of the second spring (667) are respectively fixed to the bottom side of the probe (661) and the top side of the fixed disk (666); the bottom end of the probe (661) is fixed with a first trigger electrode (663) in the vertical direction; the top side of the fixed disk (666) is fixed with a second trigger electrode (664); the outer side of the detection tube (669) is fixed with a signal light (665); the signal light (665) is used to display the contact signal between the probe (661) and the terminal of the air protector (3).
2. A power distribution terminal with self-checking function according to claim 1, characterized in that: The detection structure (66) also includes a connecting wire (662). A notch is provided at the top of the detection tube (669). A connecting wire (662) is connected to one side of the middle of the probe (661). The connecting wire (662) is slidably arranged in the notch. A wire hole is provided in the middle of the detection tube (669). The first trigger electrode (663) and the second trigger electrode (664) are arranged up and down along the same straight line. The first trigger electrode (663) slides and penetrates into the cavity of the second trigger electrode (664), and the outer wall of the first trigger electrode (663) is in sliding contact with the inner wall of the second trigger electrode (664). The first trigger electrode (663), the second trigger electrode (664), the signal light (665) and the storage battery are electrically connected. The signal light (665) is connected to the control box (12) through a signal.
3. The power distribution terminal with self-checking function according to claim 1, characterized in that: The detection structure (6) includes a movable block (64), the movable block (64) is located above the lifting plate (97), a swing seat (611) is slidably installed on the movable block (64), a swing shaft (614) is rotatably installed in the swing seat (611), a swing plate (65) is installed on the outer side of the middle part of the swing shaft (614), a positioning hole is opened in the movable block (64), a slide rod (63) is fixed to one side of the side wall of the lifting plate (97), one end of the slide rod (63) passes through the positioning hole, and a first spring (62) is sleeved on the outer side of one end of the slide rod (63), and the two ends of the first spring (62) are respectively fixed to the opposite sides of the lifting plate (97) and the movable block (64). On the surface, a slide rail (61) is fixed on the inner side of the lifting plate (97), a slide plate (68) is slidably installed in the slide rail (61), a limit cylinder (615) is fixed on one side of the slide plate (68), a telescopic rod (616) is fixed on one side of the swing seat (611), one end of the telescopic rod (616) is inserted and installed inside one end of the limit cylinder (615), the slide rod (63) is connected to the multifunctional power meter (11) through a line, the multifunctional power meter (11) transmits data to the control box (12), the control box (12) sends the data to the data terminal and receives the self-test command of the data terminal, and the control box (12) controls the electric push rod (67).
4. A power distribution terminal with self-checking function according to claim 3, characterized in that: A gear (613) is fixed to one end of the swing shaft (614), an electric push rod (67) is fixed to one side of the slide plate (68), a door-shaped push frame (69) is fixed to one end of the electric push rod (67), a rack (610) is fixed to the bottom side of the horizontal arm of the push frame (69), and the rack (610) and the gear (613) are meshed with each other.
5. A power distribution terminal with self-checking function according to claim 4, characterized in that: A limit cover (617) is installed on the outer side of the swing seat (611), and the limit cover (617) and the swing shaft (614) are coaxial structures. A spring (618) is fixed between the inner side of the limit cover (617) and the outer side of the swing shaft (614). A screw hole is opened at the bottom of the swing seat (611), and a locking screw (612) is assembled in the screw hole. The end face of the locking screw (612) is squeezed on the side of the movable block (64).
6. The power distribution terminal with self-checking function according to claim 5, characterized in that: The lifting structure (9) includes a lifting plate (97), a lifting rod (96) is fixed on the bottom side of the lifting plate (97), a socket is provided on the bottom side of the chamber cavity of the cabinet (1), the bottom end of the lifting rod (96) is slidably inserted into the socket, and an assembly groove is provided on the outer side of the cabinet (1), a lifting motor (93) is installed in the assembly groove, the output shaft of the lifting motor (93) passes through the cavity wall of the cabinet (1), and a lifting screw (94) is connected to the output shaft of the lifting motor (93), and the other end of the lifting screw (94) is rotatably mounted on the other cavity wall of the cabinet (1).
7. A power distribution terminal with self-checking function according to claim 6, characterized in that: The lifting structure (9) also includes a slider (95), which is threadedly mounted on a lifting screw (94), a connecting seat (91) is fixed to the bottom side of the lifting screw (94), a lifting rod (92) is rotatably connected inside the connecting seat (91), and the bottom end of the lifting rod (92) is hinged to the top side of the slider (95), the lifting motor (93) is connected to the control box (12) through a control line, and a storage battery supplies power to the lifting motor (93).
8. The power distribution terminal with self-checking function according to claim 7, characterized in that: An opening and closing frame (4) is installed at the bottom chamber opening of the cabinet (1) through a damping shaft, an F-shaped installation groove (7) is provided on the bottom side of the opening and closing frame (4), a hole is provided at the bottom of the installation groove (7), a latch (10) is installed in the installation groove (7), the bottom end of the latch (10) passes through the hole, a pin hole (8) opening upward is provided on the chamber opening of the cabinet (1), the bottom end of the latch (10) is fitted in the pin hole (8), and a heat dissipation hole (5) is provided on the side wall of the cabinet (1).
9. The power distribution terminal with self-checking function according to claim 8, characterized in that: A second wire hole (15) is provided on the partition plate in the middle of the cabinet (1), and a first wire hole (14) is provided in the bottom chamber of the cabinet (1). The first wire hole (14) and the second wire hole (15) are used for line connection.
10. The power distribution terminal with self-checking function according to claim 1, characterized in that: The indicator panel (2) includes a voltmeter, an ammeter, an active power meter, a power factor meter, a frequency meter, an electric watt-hour meter and a line indicator light. The voltmeter is used to measure the voltage value in the distribution line, the ammeter is used to measure the current in the line, the active power meter is used to measure the active power actually consumed in the line, the power factor meter is used to measure the power factor of the line, the frequency meter is used to measure the frequency of the power system, and the electric watt-hour meter is used to measure the consumption of electric energy.