A drop-out fuse with load replacement and a fuse replacement method

Abstract

The present application provides a drop-out fuse for load-replaceable fuses, comprising: an upper mounting frame and a lower mounting sleeve arranged vertically; a three-phase high-voltage incoming line connection point disposed at the top of the upper mounting frame, a three-phase high-voltage outgoing line connection point disposed on the outer periphery of the top of the lower mounting sleeve, three fuse bodies disposed between the upper mounting frame and the lower mounting sleeve, three transmission torches slidingly disposed on the upper and lower end surfaces of the lower mounting sleeve, a drive rod movably inserted at the bottom, and a semi-automatic lock operating mechanism disposed at the bottom of the drive rod. The present application increases the spacing between fuse bodies, reducing or even avoiding the probability of interphase short circuit accidents. By using the transmission torch as a temporary power transmission line, power outages can be reduced or even eliminated during fuse replacement, thereby improving grid operation efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of power grid maintenance, and in particular to a drop-out fuse for replacing fuses under load and a fuse replacement method. Background Art

[0002] The statements in this section merely provide background technical information related to this application and do not necessarily constitute prior art.

[0003] At present, the drop switch is the most commonly used short-circuit protection switch for 10kV distribution line branch lines and distribution transformers. It is economical, easy to operate, and highly adaptable to outdoor environments. It is widely used in the primary side of 10kV distribution lines and distribution transformers for protection and equipment switching operations.

[0004] In the current 10kV distribution line application, due to the frequent occurrence of customers increasing or decreasing capacity, or installing new ones, the previous fuse specifications of the drop switch do not meet the requirements, and the power must be cut off during inspection and replacement of the fuse, which causes power outages for customers, affecting their electricity experience and business environment.

[0005] The drop switch is generally installed on a special cross arm. According to the installation regulations, it is generally installed on the high-voltage side of the transformer and arranged in a straight line. The spacing between each phase is small. It is easy to cause inter-phase short circuit in the distribution line during the peak bird damage period and foreign object stage during the Spring Festival. Summary of the Invention

[0006] In order to solve the above problems, the present application proposes a drop-out fuse for replacing fuses under load and a fuse replacement method.

[0007] The present application provides a drop-out fuse with load replacement of fuses, characterized in that it comprises: an upper mounting frame and a lower mounting sleeve arranged above and below; a three-phase high-voltage incoming line connection point is provided on the top of the upper mounting frame, a three-phase high-voltage outgoing line connection point is provided on the outer periphery of the top of the lower mounting sleeve, three fuse bodies are provided between the upper mounting frame and the lower mounting sleeve, the fuse bodies are electrically connected between the three-phase high-voltage incoming line and the high-voltage outgoing line respectively, and the bottom of the upper mounting frame is provided with three upper static contact grooves electrically connected to the three-phase high-voltage incoming line respectively; the upper and lower end surfaces of the lower mounting sleeve are provided with three lifting slides corresponding to the upper static contact grooves, a transmission flashlight is slidably provided in each lifting slide, and the side walls of the lifting slide are respectively embedded with lower static contact rings electrically connected to the three-phase high-voltage outgoing line. The top of the transmission torch is provided with an upper moving contact adapted to the upper static contact groove, and the outer periphery of the side of the transmission torch is embedded with a lower moving contact adapted to the lower static contact ring, and the upper moving contact and the lower moving contact are connected by a wire embedded in the side wall of the transmission torch; the side wall of the lifting slide is provided with a first energy storage clamping mechanism relative to the lower side of the lower static contact ring, and a driving cavity is provided inside the transmission torch, a driving rod is movably inserted into the bottom of the driving cavity, and a second energy storage clamping mechanism that movably interferes with the driving rod is embedded in the driving cavity, a semi-automatic link operating mechanism is provided at the bottom of the driving rod, a speed sensor is embedded at the center of the bottom of the lower mounting sleeve, and a controller electrically connected to the first energy storage clamping mechanism, the second energy storage clamping mechanism, the semi-automatic link operating mechanism and the speed sensor is also embedded at the bottom of the lower mounting sleeve.

[0008] Preferably, each fuse body is evenly distributed around the common central axis of the upper mounting frame and the lower mounting sleeve; each upper static contact groove is evenly distributed around the common central axis of the upper mounting frame and the lower mounting sleeve; each lifting slide is evenly distributed around the common central axis of the upper mounting frame and the lower mounting sleeve; and limiting convex rings are provided on the upper and lower sides of the transmission flashlight.

[0009] Preferably, three extension rods are evenly arranged on the outer circumference of the upper mounting frame, and the distance between the ends of the extension rods and the central axis of the upper mounting frame is greater than the radius of the lower mounting sleeve;

[0010] The upper part of the fuse body is fixed to the end of the extension rod, and the lower part is fixed to the outer periphery of the top of the lower mounting sleeve. The upper part of the fuse body is inclined toward the side away from the lower mounting sleeve.

[0011] Preferably, three U-shaped windproof seats are provided on the bottom periphery of the lower mounting sleeve directly below each fuse body, and an elastic clamping groove adapted to the fuse tube of the fuse body is provided on the side of the U-shaped windproof seat away from the central axis of the lower mounting sleeve.

[0012] Preferably, a movable ring is provided on the outer periphery of the bottom of the lower mounting sleeve, and the U-shaped windproof seat is slidably embedded in the movable ring;

[0013] The side wall of the U-shaped windproof seat that contacts the movable ring is retractably provided with a semicircular positioning pin, and two groups of positioning grooves are provided on the outer circumference of the movable ring. Each group of positioning grooves includes 3 positioning grooves adapted to the semicircular positioning pins, one group of which is respectively provided directly below the fuse body, and the 3 positioning grooves in the other group of positioning grooves are spaced a fixed distance from the 3 positioning grooves directly below the fuse body.

[0014] Preferably, a first energy storage groove is symmetrically provided on the side wall of the lifting slide groove, the first energy storage clamping mechanism includes a first telescopic mechanism symmetrically embedded in the side walls of the two end portions of the first energy storage groove, a first clamping plate is slidably provided in the first energy storage groove, a first sliding hole is provided at the center of the first clamping plate, a telescopic shaft of the first telescopic mechanism is movably inserted in the first sliding hole, a first energy storage spring is provided between the upper and lower sides of the first clamping plate and the side wall of the first energy storage groove close to the flashlight, one end of the first energy storage spring is connected to the clamping plate, and the other end is connected to the side wall of the first energy storage groove, first electromagnetic pins are provided on the upper and lower sides of the end portion of the telescopic shaft of the first telescopic mechanism, and a first pin hole adapted to the first electromagnetic pin is provided in the first sliding hole;

[0015] A second energy storage groove is symmetrically provided on the side wall of the driving cavity, and the second energy storage clamping mechanism includes a second telescopic mechanism symmetrically embedded in the two end side walls of the second energy storage groove, a second clamping plate is slidingly provided in the second energy storage groove, a second sliding groove is provided at the center of the second clamping plate, and the telescopic shaft of the second telescopic mechanism is movably inserted in the second sliding groove, and a second energy storage spring is provided between the upper and lower sides of the second clamping plate and the end side walls of the second energy storage groove, one end of the second energy storage spring is connected to the second clamping plate, and the other end is connected to the side wall of the second energy storage groove, second electromagnetic pins are provided on the upper and lower sides of the end of the telescopic shaft of the second telescopic mechanism, and a second pin hole adapted to the second electromagnetic pin is provided in the second sliding groove.

[0016] Preferably, the semi-automatic link operating mechanism includes a rotating seat rotatably mounted on the bottom of the driving rod, and a monitoring plate and a signal transmission guide cylinder are respectively provided at symmetrical positions on the outer periphery of the rotating seat. A connecting rod is provided between the monitoring plate and the rotating seat. When the rotating seat drives the monitoring plate to rotate, the rotation path of the monitoring plate includes the position directly below the speed sensor, and a laser indicator light is provided at the bottom of the rotating seat.

[0017] Preferably, the signal transmission guide tube includes a guide tube body, and two groups of upper and lower symmetrical arc grooves are opened in the inner cavity of the guide tube body, and each group of arc grooves includes three arc grooves evenly distributed along the central axis of the guide tube body. A mounting slider is slidingly arranged in the arc groove, and a clamping and telescopic mechanism is embedded in the side of the mounting slider close to the central axis of the guide tube body. The ends of the telescopic shafts of the two corresponding clamping and telescopic mechanisms are connected with pressure rods, and a return spring is arranged between the mounting slider and the side walls at both ends of the corresponding arc groove. A second pressure sensor is arranged at the connection between the arc groove and the return spring, and a beam laser sensor is arranged on the side wall of the inner cavity of the guide tube above the upper arc groove.

[0018] Preferably, the driving rod is an electric telescopic rod electrically connected to the controller.

[0019] The present application also provides a method for replacing a drop-out type fuse with load replacement of the fuse, which is as follows:

[0020] When it is necessary to replace the fuse tube of any phase of the fuse body, first use the link rod to operate the semi-automatic link operating mechanism to control the corresponding transmission torch to connect the high-voltage incoming line and high-voltage outgoing line of the corresponding phase for power transmission. After replacing the fuse tube under load, disconnect the corresponding transmission torch from the high-voltage incoming line and high-voltage outgoing line.

[0021] Among them, the method of controlling the connection and disconnection of the flashlight with the high-voltage incoming line and the high-voltage outgoing line by operating the semi-automatic link operating mechanism through the link rod includes:

[0022] S101: The user connects the semi-automatic link operating mechanism via a link stick;

[0023] S102: Transmitting a control signal to the controller by rotating the link stick, sending different manipulation instructions according to the direction and number of rotations, and sending an acceleration range determination instruction to the controller. The controller controls the second energy storage clamping mechanism to release the drive rod. The user drives the semi-automatic link operating mechanism and the drive rod up and down through the link stick. The controller sends a distance measurement instruction to the controller at the starting point P1 and the end point P2 of the height space determined by the user. The controller detects the coordinates of the semi-automatic link operating mechanism at the corresponding position through the speed sensor. The height interval between the two coordinates is the corresponding acceleration range [P1, P2] of the user.

[0024] S103: The controller sends a switch-on / off monitoring command by rotating the link rod. The controller monitors the instantaneous lifting and lowering speed Vt of the semi-automatic link operating mechanism within the acceleration range [P1, P2] through the speed sensor. When Vt is greater than the preset threshold speed V0, the controller first controls the first energy storage clamping mechanism to release the transmission flashlight, and then controls the corresponding second energy storage clamping mechanism to clamp the driving rod. The lifting and lowering of the driving rod drives the corresponding transmission flashlight to complete the connection or disconnection with the high-voltage incoming line and the high-voltage outgoing line.

[0025] S104: Sending a reset instruction to the controller by rotating the link rod, and the controller controls the first energy storage clamping mechanism and the second energy storage clamping mechanism to move at corresponding initial positions to complete the reset of the transmission flashlight and the driving rod.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) The present application arranges three fuse bodies evenly around the mounting plate, thereby increasing the spacing between the fuse bodies, reducing or even avoiding the probability of phase-to-phase short circuit accidents, and enhancing the safety of the fuse during use.

[0028] (2) The present application uses a flashlight as a temporary power transmission line, which is convenient for reducing or even eliminating power outage time when replacing a fuse, thereby improving the operating efficiency of the power grid.

[0029] (3) The present application realizes the clutch operation of the driving rod and the flashlight through the semi-automatic link operating mechanism in conjunction with the first energy storage clamping mechanism, the second energy storage clamping mechanism and the speed sensor, which facilitates the connection and disconnection of the flashlight and the high-voltage input and output lines at a speed greater than the threshold value, reduces the length of the arc generated, and ensures the safe switching of the flashlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0031] Figure 1 This is the overall structural front view of this application.

[0032] Figure 2 This is a bottom view of the overall structure of this application.

[0033] Figure 3 This is a top view of the overall structure of this application.

[0034] Figure 4 This is a partial enlarged view A of this application.

[0035] Figure 5 This is a cross-sectional diagram of the signal transmission guide tube of this application.

[0036] Figure 6 This is a longitudinal cross-sectional diagram of the signal transmission guide tube of this application.

[0037] Figure 7 This is a structural diagram of another semi-automatic link operating mechanism of this application.

[0038] Figure 8 FIG. C is an enlarged view of another semi-automatic link operating mechanism of the present application.

[0039] Figure 9 This is a partial cross-sectional view of the installation sleeve of this application.

[0040] Figure 10 This is the partial enlarged view B of this application.

[0041] Figure 11 This is a schematic structural diagram of the second energy storage clamping mechanism of this application.

[0042] In the picture:

[0043] 1. Upper mounting bracket, 2. Lower mounting sleeve, 3. Fuse body, 4. Flashlight, 5. Driving rod, 6. Semi-automatic link operating mechanism, 7. U-shaped windshield, 8. Speed ​​sensor;

[0044] 41. Limiting ring, 61. Rotating seat, 62. Connecting rod, 63. Monitoring board, 64. Laser indicator light, 65. Signal transmission guide tube, 71. Moving ring;

[0045] 100, high voltage incoming line, 200, high voltage outgoing line;

[0046] 101. Extension rod, 102. Upper static contact groove, 201. Lower static contact ring, 401. Upper moving contact, 402. Lower moving contact, 403. Elastic buffer block, 404. Drive chamber, 405. First energy storage clamping mechanism, 406. Second energy storage clamping mechanism, 451. First telescopic mechanism, 452. First clamping plate, 453. First energy storage spring, 454. First electromagnetic pin, 461. Second telescopic mechanism, 462. Second clamping plate, 463. Second energy storage spring, 464. Second electromagnetic pin, 651. Guide cylinder body, 652. Second pressure sensor, 653. Return spring, 654. Mounting slider, 655. Clamping and telescopic mechanism, 656. Pressure rod, 657. Through-beam laser sensor. DETAILED DESCRIPTION

[0047] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are merely relational words determined for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure, and should not be understood as limitations on the present disclosure.

[0050] Example 1

[0051] like Figures 1 to 11 As shown, the present application provides a drop-out fuse with load replacement, comprising: an upper mounting frame 1 and a lower mounting sleeve 2 arranged above and below, the top of the upper mounting frame 1 being provided with a connection point for a three-phase high-voltage incoming line 100, the top periphery of the lower mounting sleeve 2 being provided with a connection point for a three-phase high-voltage outgoing line 200, three fuse bodies 3 being provided between the upper mounting frame 1 and the lower mounting sleeve 2, the fuse bodies 3 being respectively electrically connected between the three-phase high-voltage incoming line 100 and the high-voltage outgoing line 200, and the bottom of the upper mounting frame 1 being provided with three upper static contact slots 102 respectively electrically connected to the three-phase high-voltage incoming line;

[0052] The upper and lower end surfaces of the lower mounting sleeve 2 are provided with three lifting slots corresponding to the upper static contact slots 102. A transmission torch 4 is slidably arranged in each lifting slot. The side walls of the lifting slots are respectively embedded with lower static contact rings 201 electrically connected to the three-phase high-voltage output line. An upper moving contact 401 adapted to the upper static contact slot 102 is provided on the top of the transmission torch 4. A lower moving contact 402 adapted to the lower static contact ring 201 is embedded on the outer periphery of the side of the transmission torch 4. The upper moving contact 401 and the lower moving contact 402 are connected by a wire embedded in the side wall of the transmission torch 4.

[0053] A first energy storage clamping mechanism 405 is provided on the side wall of the lifting slide relative to the lower static contact ring 201, and a driving cavity 404 with a bottom through-hole is provided inside the electric flashlight 4, and a driving rod 5 is movably inserted in the driving cavity 404, and a second energy storage clamping mechanism 406 that movably contacts the driving rod 5 is embedded in the side wall of the driving cavity 404, and a semi-automatic link operating mechanism 6 is provided at the bottom of the driving rod 5, and a speed sensor 8 is embedded at the bottom center of the lower mounting sleeve 2, and a controller electrically connected to the first energy storage clamping mechanism 405, the second energy storage clamping mechanism 406, the semi-automatic link operating mechanism 6, and the speed sensor 8 is also embedded at the bottom of the lower mounting sleeve 2.

[0054] The present application uses the telegraph torch 4 as a temporary power transmission line, which facilitates the connection of the telegraph torch 4 of the corresponding phase with the high-voltage input and output lines when replacing the fuse, thereby reducing or even eliminating power outage time and improving the operation efficiency of the power grid.

[0055] A clamping spring is provided inside the upper static contact slot 102 to assist in connection.

[0056] The semi-automatic link operating mechanism 6 is connected to the link rod, and cooperates with the first energy storage clamping mechanism 405, the second energy storage clamping mechanism 406 and the speed sensor 8 to realize the clutch operation of the driving rod 5 and the flashlight 4, making it convenient to connect and disconnect the flashlight 4 and the high-voltage input and output lines at a speed greater than the threshold value, reducing the length of the arc generated and ensuring the safe switching of the flashlight 4.

[0057] Preferably, each fuse body 3 is evenly distributed around the common central axis of the upper mounting frame 1 and the lower mounting sleeve 2, each upper static contact groove 102 is evenly distributed around the common central axis of the upper mounting frame 1 and the lower mounting sleeve 2, each lifting slide is evenly distributed around the common central axis of the upper mounting frame 1 and the lower mounting sleeve 2, and limiting convex rings 41 are provided on the upper and lower sides of the transmission flashlight 4.

[0058] Specifically, three extension rods 101 are evenly arranged on the outer periphery of the upper mounting frame 1, and the distance between the end of the extension rod 101 and the central axis of the upper mounting frame 1 is greater than the radius of the lower mounting sleeve 2. The upper part of the fuse body 3 is fixed to the end of the extension rod 101, and the lower part is fixed to the outer periphery of the top of the lower mounting sleeve 2. The upper part of the fuse body 3 is inclined toward the side away from the lower mounting sleeve 2.

[0059] Preferably, three U-shaped windproof seats 7 are provided on the outer periphery of the bottom of the lower mounting sleeve 2 directly below each fuse body 3, and an elastic clamping groove adapted to the fuse tube of the fuse body 3 is provided on the side of the U-shaped windproof seat 7 away from the central axis of the lower mounting sleeve 2, and an elastic layer is provided in the groove to facilitate clamping the fuse tube.

[0060] Furthermore, a movable ring 71 is provided on the outer periphery of the bottom of the lower mounting sleeve 2, and the U-shaped windproof seat 7 is slidably embedded in the 71. The side wall of the U-shaped windproof seat 7 that contacts the movable ring 71 is retractably provided with a semicircular positioning pin, and two groups of positioning grooves are provided on the outer periphery of the movable ring 71. Each group of positioning grooves includes 3 positioning grooves adapted to the semicircular positioning pins, one group of which is respectively provided directly below the fuse body 3, and the three positioning grooves in the other group of positioning grooves are spaced a fixed distance from the three positioning grooves directly below the fuse body 3.

[0061] The U-shaped windproof seat 7 is used to clamp the fuse tube when it falls, to prevent the fuse tube from swinging due to wind force, which may cause safety risks. The movable ring 71 is used to enhance the flexibility of the U-shaped windproof seat 7. When hanging the fuse tube, the U-shaped windproof seat 7 is pushed away from the bottom of the fuse body 3 by the link rod to prevent it from affecting the normal hanging of the fuse body 3.

[0062] Specifically, a first energy storage groove is symmetrically provided on the side wall of the lifting slide groove, and the first energy storage clamping mechanism 405 includes a first telescopic mechanism 451 symmetrically embedded in the side walls of the two end portions of the first energy storage groove, a first clamping plate 452 is slidingly provided in the first energy storage groove, a first sliding hole is provided at the center of the first clamping plate 452, and a telescopic shaft of the first telescopic mechanism 451 is movably inserted in the first sliding hole, and a first energy storage spring 453 is provided between the upper and lower sides of the first clamping plate 452 and the side wall of the first energy storage groove close to the flashlight 4, one end of the first energy storage spring 453 is connected to the first clamping plate 452, and the other end is connected to the side wall of the first energy storage groove, first electromagnetic pins are provided on the upper and lower sides of the telescopic shaft end of the first telescopic mechanism 451, and a first pin hole adapted to the first electromagnetic pin is provided in the first sliding hole;

[0063] A second energy storage groove is symmetrically provided on the side wall of the driving cavity 404, and the second energy storage clamping mechanism 406 includes a second telescopic mechanism 461 symmetrically embedded in the two end side walls of the second energy storage groove, and a second clamping plate 462 is slidingly provided in the second energy storage groove, and a second sliding groove is provided at the center of the second clamping plate 462, and the telescopic shaft of the second telescopic mechanism 461 is movably inserted in the second sliding groove, and a second energy storage spring 463 is provided between the upper and lower sides of the second clamping plate 462 and the end side wall of the second energy storage groove, one end of the second energy storage spring 463 is connected to the second clamping plate 462, and the other end is connected to the side wall of the second energy storage groove, and second electromagnetic pins are provided on the upper and lower sides of the end of the telescopic shaft of the second telescopic mechanism 461, and a second pin hole adapted to the second electromagnetic pin is provided in the second sliding groove.

[0064] The first energy storage clamping mechanism 405 is used for instantaneous separation of the transmission flashlight 4 and the lifting slide, and the second energy storage clamping mechanism 406 is used for instantaneous connection between the transmission flashlight 4 and the driving rod 5.

[0065] When the flashlight 4 is normally connected to the lifting slide, the telescopic shaft of the first telescopic mechanism 451 of the first energy storage clamping mechanism 405 is inserted into the first sliding hole, and the first electromagnetic pin 454 is inserted into the first pin hole. The first telescopic mechanism 451 drives the first clamping plate 452 to contact the flashlight 4, thereby clamping it. At this time, the first energy storage spring 453 is in a compressed energy storage state; when receiving the disengagement signal from the controller, the first electromagnetic pin retracts to the inside of the first telescopic mechanism 451, and the first clamping plate 452 is quickly separated from the flashlight 4 under the action of the first energy storage spring 453; when receiving the clamping signal from the controller, the first telescopic mechanism 451 is connected to the first clamping plate 452 through the first electromagnetic pin 454, and the first telescopic mechanism 451 drives the first clamping plate 452 to contact the flashlight 4, thereby clamping it. The operating principle of the second energy storage clamping mechanism 406 is the same as that of the first energy storage clamping mechanism 405, and will not be repeated here.

[0066] Preferably, an elastic buffer block 403 is provided at the top end of the driving cavity 404 to prevent rigid collision between the driving rod 5 and the transmission torch 4.

[0067] Specifically, the semi-automatic link operating mechanism 6 includes a rotating base 61 rotatably mounted on the bottom of the driving rod 5, and a monitoring plate 63 and a signal transmission guide tube 65 are respectively provided at symmetrical positions on the outer periphery of the rotating base 61. A connecting rod 62 is provided between the monitoring plate 63 and the rotating base 61. When the rotating base 61 drives the monitoring plate 63 to rotate, the rotation path of the monitoring plate 63 includes the position directly below the speed sensor 8, and a laser indicator light 64 is provided at the bottom of the rotating base 61.

[0068] A rotary motor is embedded at the bottom end of the driving rod 5 , and the rotary seat 61 is connected to the output shaft of the rotary motor.

[0069] The signal transmission guide tube 65 includes a guide tube body 651, and two groups of symmetrical arc grooves are opened in the inner cavity of the guide tube body 651. Each group of arc grooves includes three arc grooves evenly distributed along the central axis of the guide tube body 651. A mounting slider 654 is slidingly arranged in the arc groove. A clamping and telescopic mechanism 655 is embedded in the side of the mounting slider 654 close to the central axis of the guide tube body 651. The ends of the telescopic shafts of the two corresponding clamping and telescopic mechanisms 655 are connected with pressure rods 656. A return spring 653 is arranged between the mounting slider 654 and the side walls at both ends of the corresponding arc groove. A second pressure sensor 652 is arranged at the connection between the arc groove and the return spring 653, and a corresponding laser sensor 657 is arranged on the side wall of the inner cavity of the guide tube above the upper arc groove.

[0070] The signal transmission guide tube 65 is used for connecting, guiding and receiving instructions of the link rod. When the link rod is inserted into the guide tube body 651, the opposing laser sensor 657 is triggered, and the controller controls the action of each clamping and telescopic mechanism 655, driving the pressure rod 656 to clamp the link rod. When the link rod is rotated, the return spring 653 is deformed to generate pressure, triggering the corresponding second pressure sensor 652 to send a trigger signal to the controller. The controller identifies the user's operation instructions based on the preset strategy according to the position number and triggering number of the pressure sensor. The laser indicator light 64 feedbacks the instruction execution status to the user through the flashing frequency.

[0071] After the signal transmission guide tube 65 is connected to the link rod, first, the user issues a preparatory instruction by rotating the link rod, the controller controls the rotation seat 61 to rotate, rotates the corresponding monitoring plate 63 to the bottom of the speed sensor 8, and then performs the switching operation of the transmission tube 4.

[0072] Preferably, the present application also provides another three-phase linkage semi-automatic link operating mechanism, such as Figure 7 and Figure 8 As shown, a three-phase common monitoring board 63 is arranged directly below the speed sensor 8. Three connecting rods 62 are arranged on the periphery of the monitoring board 63 to connect the ends of each driving rod 5. The connecting rods 62 extend to the other side of the corresponding driving rod 5, and the ends thereof are respectively provided with signal transmission guide cylinders 65. The three-phase linked semi-automatic linker operating mechanism is conducive to using multiple linker rods to connect different signal transmission guide cylinders 65 at the same time, jointly driving the driving rod 5 to rise and fall, and then driving the corresponding phase of the transmission torch 4 to rise and fall, which is conducive to speeding up the lifting speed of the transmission torch 4. A laser indicator light 64 is set below each connecting rod 63 relative to each driving rod 5.

[0073] Preferably, the driving rod 5 is an electric telescopic rod electrically connected to the controller, so as to adapt to link rods of different lengths.

[0074] The controller is an industrial computer device, the first telescopic mechanism 451, the second telescopic mechanism 461, and the clamping telescopic mechanism 655 are electric cylinders, and the speed sensor 8 is used for both speed and distance measurement, and can be either an ultrasonic speed sensor or a laser speed sensor. When used in this application, the upper mounting frame 1 and the lower mounting sleeve 2 are fixed to the tower crossbar by welding brackets.

[0075] The present application also provides a method for replacing a drop-out type fuse with load replacement of the fuse, which is as follows:

[0076] When it is necessary to replace the fuse tube of any phase of the fuse body 3, firstly, the semi-automatic link operating mechanism 6 is operated by the link rod to control the corresponding transmission torch 4 to connect the high-voltage incoming line and high-voltage outgoing line of the corresponding phase for power transmission. After the fuse tube is replaced under load, the corresponding transmission torch 4 is disconnected from the high-voltage incoming line and high-voltage outgoing line.

[0077] The method of controlling the connection and disconnection of the flashlight 4 with the high-voltage input line and the high-voltage output line by operating the semi-automatic link operating mechanism 6 through the link rod includes:

[0078] S101: The user connects the semi-automatic link operating mechanism 6 via a link stick;

[0079] S102: Transmitting a control signal to the controller by rotating the link stick, sending different manipulation instructions by the direction and number of rotations. When sending an acceleration interval determination instruction to the controller, the controller controls the second energy storage clamping mechanism 406 to release the driving rod 5. The user drives the semi-automatic link operating mechanism 6 and the driving rod 5 up and down through the link stick. The controller sends a distance measurement instruction to the controller at the starting point P1 and the end point P2 of the height space determined by the user. The controller detects the coordinates of the semi-automatic link operating mechanism 6 at the corresponding position through the speed sensor 8. The height interval between the two coordinates is the corresponding acceleration interval [P1, P2] of the user.

[0080] S103: The controller sends a switch-on / off monitoring command by rotating the link rod. The controller monitors the instantaneous lifting and lowering speed Vt of the semi-automatic link operating mechanism 6 within the acceleration range [P1, P2] through the speed sensor 8. When Vt is greater than the preset threshold speed V0, the controller first controls the corresponding first energy storage clamping mechanism 405 to release the transmission torch 4, and then controls the corresponding second energy storage clamping mechanism 406 to clamp the driving rod 5. The lifting and lowering of the driving rod 5 drives the corresponding transmission torch 4 to complete the connection or disconnection with the high-voltage incoming line and the high-voltage outgoing line.

[0081] S104: Sending a reset instruction to the controller by rotating the link rod, the controller controls the first energy storage clamping mechanism 405 and the second energy storage clamping mechanism 406 to move at the corresponding initial positions to complete the reset of the transmission torch 4 and the driving rod 5.

[0082] The replacement of the fuse tube is a conventional operation in this field and will not be described in detail in this application.

[0083] It is worth noting that when using Figures 2 to 4 When the semi-automatic link operating mechanism shown is used, in step S101, it is only necessary to use the link rod to connect the signal transmission guide tube 65 corresponding to the phase where the fuse tube needs to be replaced. In step S102, it is necessary to first control the corresponding monitoring board 63 to move to the bottom of the speed sensor. Similarly, in steps S102 and S103, it is only necessary to control the first energy storage clamping mechanism 405 and the second energy storage clamping mechanism 406 of the corresponding phase to act; when a three-phase separated three-phase linked semi-automatic link operating mechanism is used, in step S101, according to on-site needs, multiple link rods can be used to connect multiple signal transmission guide tubes 65. In step S102, all the second energy storage clamping mechanisms 406 need to be controlled to release the driving rod 5, but in step S103, it is only necessary to control the first energy storage clamping mechanism 405 and the second energy storage clamping mechanism 406 corresponding to the phase where the fuse tube needs to be replaced to act in conjunction to drive the electric torch 4 to rise and fall.

[0084] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

[0085] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it does not limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present application.

Claims

1. A drop-out fuse with load replacement, characterized in that: include: An upper mounting frame (1) and a lower mounting sleeve (2) are arranged above and below, a three-phase high-voltage incoming line connection point is arranged on the top of the upper mounting frame (1), a three-phase high-voltage outgoing line connection point is arranged on the outer periphery of the top of the lower mounting sleeve (2), three fuse bodies (3) are arranged between the upper mounting frame (1) and the lower mounting sleeve (2), the fuse bodies (3) are respectively electrically connected between the three-phase high-voltage incoming line and the high-voltage outgoing line, and three upper static contact slots (102) are respectively electrically connected to the three-phase high-voltage incoming line at the bottom of the upper mounting frame (1); The upper and lower end surfaces of the lower mounting sleeve (2) are provided with three lifting slots corresponding to the upper static contact slot (102), and a transmission torch (4) is slidably arranged in each lifting slot. The side walls of the lifting slot are respectively embedded with lower static contact rings (201) electrically connected to the three-phase high-voltage output line. The top of the transmission torch (4) is provided with an upper moving contact (401) adapted to the upper static contact slot (102), and the outer periphery of the side of the transmission torch (4) is embedded with a lower moving contact (402) adapted to the lower static contact ring (201). The upper moving contact (401) and the lower moving contact (402) are connected by a wire embedded in the side wall of the transmission torch (4); A first energy storage clamping mechanism (405) is provided on the side wall of the lifting chute relative to the lower static contact ring (201); a driving chamber (404) is provided inside the electric flashlight (4); a driving rod (5) is movably inserted into the bottom of the driving chamber (404); a second energy storage clamping mechanism (406) movably in contact with the driving rod (5) is embedded in the driving chamber (404); a semi-automatic link operating mechanism (6) is provided at the bottom of the driving rod (5); a speed sensor (8) is embedded at the center of the bottom of the lower mounting sleeve (2); and a controller electrically connected to the first energy storage clamping mechanism (405), the second energy storage clamping mechanism (406), the semi-automatic link operating mechanism (6), and the speed sensor (8) is also embedded at the bottom of the lower mounting sleeve (2); The semi-automatic link operating mechanism (6) includes a rotating seat (61) rotatably sleeved on the bottom of the driving rod (5), a monitoring plate (63) and a signal transmission guide tube (65) are respectively provided at symmetrical positions on the outer periphery of the rotating seat (61), a connecting rod (62) is provided between the monitoring plate (63) and the rotating seat (61), when the rotating seat (61) drives the monitoring plate (63) to rotate, the rotation path of the monitoring plate (63) includes the position directly below the speed sensor (8), and a laser indicator light (64) is provided at the bottom of the rotating seat (61); The signal transmission guide tube (65) is used for connecting, guiding and receiving instructions of the link rod. The semi-automatic link operating mechanism (6) is connected to the link rod and cooperates with the first energy storage clamping mechanism (405), the second energy storage clamping mechanism (406) and the speed sensor (8) to realize the clutch operation of the driving rod (5) and the transmission torch (4). The lifting and lowering of the driving rod (5) drives the corresponding transmission torch (4) to realize the connection and disconnection of the transmission torch (4) and the high-voltage input and output lines at a speed greater than a threshold value.

2. The drop-out fuse with load-replaceable fuse according to claim 1, characterized in that: The fuse bodies (3) are evenly distributed around the common central axis of the upper mounting frame (1) and the lower mounting sleeve (2); The upper static contact slots (102) are evenly distributed around the common central axis of the upper mounting frame (1) and the lower mounting sleeve (2); The lifting chutes are evenly distributed around the common central axis of the upper mounting frame (1) and the lower mounting sleeve (2); Limiting convex rings (41) are provided on the upper and lower sides of the transmission tube (4).

3. The drop-out fuse with load-replaceable fuse according to claim 2, characterized in that: Three extension rods (101) are evenly arranged on the outer periphery of the upper mounting frame (1), and the distance between the ends of the extension rods (101) and the central axis of the upper mounting frame (1) is greater than the radius of the lower mounting sleeve (2); The upper portion of the fuse body (3) is fixed to the end of the extension rod (101), and the lower portion is fixed to the outer periphery of the top of the lower mounting sleeve (2). The upper portion of the fuse body (3) is inclined toward a side away from the lower mounting sleeve (2).

4. The drop-out fuse with load-replaceable fuse according to claim 3, characterized in that: Three U-shaped windproof seats (7) are provided on the outer periphery of the bottom of the lower mounting sleeve (2) directly below each fuse body (3); and an elastic clamping groove adapted to the fuse tube of the fuse body (3) is provided on the side of the U-shaped windproof seat (7) away from the central axis of the lower mounting sleeve (2).

5. The drop-out fuse with load-replaceable fuse according to claim 4, characterized in that: A movable ring (71) is provided on the outer periphery of the bottom of the lower mounting sleeve (2), and the U-shaped windproof seat (7) is slidably embedded in the movable ring (71); The side wall of the U-shaped windproof seat (7) that contacts the movable ring (71) is retractably provided with a semicircular positioning pin, and the outer periphery of the movable ring (71) is provided with two groups of positioning grooves, each group of positioning grooves includes three positioning grooves adapted to the semicircular positioning pins, one group of which is respectively provided directly below the fuse body (3), and the three positioning grooves in the other group of positioning grooves are spaced a fixed distance from the three positioning grooves directly below the fuse body (3).

6. The drop-out fuse with load-replaceable fuse according to claim 2, characterized in that: A first energy storage groove is symmetrically provided on the side wall of the lifting slide groove, the first energy storage clamping mechanism (405) includes a first telescopic mechanism (451) symmetrically embedded in the side walls of the two end portions of the first energy storage groove, a first clamping plate (452) is slidably provided in the first energy storage groove, a first sliding hole is provided at the center of the first clamping plate (452), a telescopic shaft of the first telescopic mechanism (451) is movably inserted in the first sliding hole, a first energy storage spring (453) is provided between the upper and lower sides of the first clamping plate (452) and the side wall of the first energy storage groove close to the flashlight (4), one end of the first energy storage spring (453) is connected to the first clamping plate (452), and the other end is connected to the side wall of the first energy storage groove, a first electromagnetic pin is provided on the upper and lower sides of the end portion of the telescopic shaft of the first telescopic mechanism (451), and a first pin hole adapted to the first electromagnetic pin is provided in the first sliding hole; A second energy storage groove is symmetrically provided on the side wall of the driving cavity (404), and the second energy storage clamping mechanism (406) includes a second telescopic mechanism (461) symmetrically embedded in the side walls of the two second energy storage grooves. A second clamping plate (462) is slidingly provided in the second energy storage groove, and a second sliding groove is provided at the center of the second clamping plate (462). The telescopic shaft of the second telescopic mechanism (461) is movably inserted in the second sliding groove, and a second energy storage spring (463) is provided between the upper and lower sides of the second clamping plate (462) and the side walls of the end of the second energy storage groove. One end of the second energy storage spring (463) is connected to the second clamping plate (462), and the other end is connected to the side wall of the second energy storage groove. Second electromagnetic pins are provided on the upper and lower sides of the end of the telescopic shaft of the second telescopic mechanism (461), and a second pin hole adapted to the second electromagnetic pin is provided in the second sliding groove.

7. The drop-out fuse with load-replaceable fuse according to claim 1, characterized in that: The signal transmission guide tube (65) includes a guide tube body (651), and two groups of symmetrical arc grooves are opened in the inner cavity of the guide tube body (651), and each group of arc grooves includes three arc grooves evenly distributed along the central axis of the guide tube body (651). A mounting slider (654) is slidingly arranged in the arc groove, and a clamping and telescopic mechanism (655) is embedded on the side of the mounting slider (654) close to the central axis of the guide tube body (651). The ends of the telescopic shafts of the two corresponding clamping and telescopic mechanisms (655) are connected with a pressure rod (656), and a return spring (653) is arranged between the mounting slider (654) and the side walls of the two ends of the corresponding arc groove. A second pressure sensor (652) is arranged at the connection part of the arc groove and the return spring (653), and a beam laser sensor (657) is arranged on the side wall of the inner cavity of the guide tube above the upper arc groove.

8. The drop-out fuse with load-replaceable fuse according to claim 2, characterized in that: The driving rod (5) is an electric telescopic rod electrically connected to the controller.

9. A method for replacing a drop-out fuse with load replacement according to any one of claims 1 to 8, characterized in that: When it is necessary to replace the fuse tube of any phase of the fuse body (3), firstly, the semi-automatic link operating mechanism (6) is operated by the link rod to control the corresponding transmission torch (4) to connect the high-voltage incoming line and high-voltage outgoing line of the corresponding phase to transmit electric energy. After the fuse tube is replaced under load, the corresponding transmission torch (4) is disconnected from the high-voltage incoming line and high-voltage outgoing line. The method of controlling the connection and disconnection of the telegraph torch (4) with the high-voltage incoming line and the high-voltage outgoing line by operating the semi-automatic link operating mechanism (6) through the link rod includes: S101: The user connects the semi-automatic link operating mechanism (6) via a link stick; S102: transmitting a control signal to the controller by rotating the link stick, sending different manipulation instructions by the direction and number of rotations, sending an acceleration interval determination instruction to the controller, the controller controlling the second energy storage clamping mechanism (406) to release the driving rod (5), the user drives the semi-automatic link operating mechanism (6) and the driving rod (5) to rise and fall by the link stick, sending a distance measurement instruction to the controller at the starting point P1 and the end point P2 of the height space determined by the user, the controller detecting the coordinates of the semi-automatic link operating mechanism (6) at the corresponding position by the speed sensor (8), and the height interval between the two coordinates is the corresponding acceleration interval [P1, P2] of the user; S103: Sending a switch-on / off monitoring instruction to the controller by rotating the link rod, the controller monitors the instantaneous lifting speed V(t) of the semi-automatic link operating mechanism (6) in the acceleration range [P1, P2] through the speed sensor (8), when V(t) is greater than the preset threshold speed V0, the controller first controls the corresponding first energy storage clamping mechanism (405) to release the transmission torch (4), and then controls the corresponding second energy storage clamping mechanism (406) to clamp the driving rod (5), and drives the corresponding transmission torch (4) to complete the connection or disconnection with the high-voltage incoming line and the high-voltage outgoing line by lifting and lowering the driving rod (5); S104: Sending a reset instruction to the controller by rotating the link rod, the controller controls the first energy storage clamping mechanism (405) and the second energy storage clamping mechanism (406) to move at the corresponding initial positions to complete the reset of the transmission torch (4) and the driving rod (5).

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