Self-locking conductive arm for high-voltage isolating switch and use method of self-locking conductive arm

Abstract

The invention discloses a self-locking conductive arm for a high-voltage isolation switch and a use method thereof, and relates to the technical field of self-locking conductive arms, and the self-locking conductive arm comprises an installation column which is used for the installation of the self-locking conductive arm; the control box is arranged on the mounting column and is used for movably controlling the self-locking conductive arm; the main conductive arm is arranged at the end part of the mounting column and is used for conducting current and assisting rotation to adjust the on-off of the high-voltage isolating switch; the self-locking mechanical gripper disassembling and assembling assembly is arranged on the auxiliary conductive arm and the self-locking mechanical gripper and used for disassembling and assembling the self-locking mechanical gripper; according to the self-locking mechanical gripper, through the arrangement of the self-locking mechanical gripper regulation and control assembly, the self-locking mechanical gripper dismounting and mounting assembly and the protection assembly, the phenomena that contact surfaces on the same position are too large in loss and contact is blocked due to the fact that the contact surfaces on the regulation wheel are concentrated are avoided, and the self-locking mechanical gripper is convenient to dismount, mount and maintain; and the damage to the self-locking conductive arm structure caused by the wind load can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of self-locking conductive arms, and in particular to a self-locking conductive arm for a high-voltage disconnector and a use method thereof. Background Art

[0002] The self-locking conductive arm of the high-voltage disconnector is mainly composed of a control box, an active control unit, a main conductive arm, an auxiliary conductive arm and a self-locking mechanical gripper. When an abnormality occurs in the high-voltage line, the current transformer will monitor the abnormality of the current and feed it back to the control system. The control system will execute the tripping command through the self-locking conductive arm, and disconnect the high-voltage disconnector by separating the self-locking mechanical gripper from the high-voltage disconnector. When the high-voltage line is normal, the metal head contact rod of the high-voltage disconnector is grasped by the self-locking mechanical gripper to connect the high-voltage disconnector.

[0003] At present, in the process of closing the circuit breaker, the arc top block on the movable control part will lift the roller at the end of the top rod, and the roller will drive the top rod to overcome the resistance of the reset spring in the auxiliary conductive arm to control the self-locking mechanical gripper to realize the closing process. Since the arc top block and the roller have a certain contact friction when they are in contact, the contact surface of the arc top block cannot be adjusted. Long-term use will cause wear on the surface of the arc top block, and the contact surface of the roller is relatively concentrated. The small rotation amplitude of the roller will also aggravate the contact wear, and an arc will be generated in the process of closing and tripping. The high temperature heat brought by the arc will damage the contact point of the self-locking mechanical gripper. It is necessary to regularly remove multiple fixing bolts to disassemble the self-locking mechanical gripper for maintenance. The operation is relatively cumbersome. When the self-locking conductive arm is subjected to a large lateral wind load, it will cause certain damage to the structure of the self-locking conductive arm. Therefore, a self-locking conductive arm for high-voltage disconnectors is needed to meet the use requirements. Summary of the invention

[0004] The object of the present invention is to provide a self-locking conductive arm for a high-voltage disconnector and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a self-locking conductive arm for a high-voltage disconnector and a method for using the same, comprising a mounting post for mounting the self-locking conductive arm; A control box, arranged on the mounting column, for controlling the movement of the self-locking conductive arm; The main conductive arm is arranged at the end of the mounting column and is used for conducting the current and assisting in rotating and adjusting the on and off of the high-voltage disconnector; A main conductive arm activity control unit is arranged on the mounting column and the main conductive arm and is used to adjust the activity of the main conductive arm; The auxiliary conductive arm is arranged at the end of the main conductive arm, and is used for conducting current and assisting in rotating and adjusting the on and off of the high-voltage disconnector; A secondary conductive arm activity control unit, which is arranged on the main conductive arm and the secondary conductive arm and is used to adjust the activity of the secondary conductive arm; A self-locking mechanical gripper, which is arranged at the end of the auxiliary conductive arm and is used to adjust the on and off of the high-voltage disconnector; A self-locking mechanical gripper control component is arranged on the auxiliary conductive arm and the auxiliary conductive arm activity control part, and is used to adjust the self-locking mechanical gripper to grasp, lock and release the high-voltage disconnector; A self-locking mechanical gripper disassembly and assembly component, which is arranged on the auxiliary conductive arm and the self-locking mechanical gripper and is used for disassembly and assembly of the self-locking mechanical gripper; The protection component is arranged on the main conductive arm and is used for protecting the self-locking conductive arm.

[0006] Furthermore, the self-locking mechanical gripper control assembly includes a push rod movably arranged in the auxiliary conductive arm, a connecting frame is installed at the end of the push rod, a roller is rotatably installed in the connecting frame, an annular groove is opened on the roller, and multiple groups of miniature fine wheels are rotatably arranged in the annular groove, an arc block is installed on the movable control part of the auxiliary conductive arm, and an adjustment wheel is adjustably installed in the arc block.

[0007] Furthermore, the self-locking mechanical gripper control assembly also includes a rotating shaft rotatably installed in the annular groove, the micro-refining wheel is rotatably sleeved on the rotating shaft, an annular rotating plate is installed on the rotating shaft, a movable steel ball is movably installed in the micro-refining wheel, and the annular rotating plate is rotatably set on the movable steel ball.

[0008] Furthermore, the self-locking mechanical gripper control assembly also includes an adjustment shaft rotatably installed in the arc block, the adjustment wheel is installed on the adjustment shaft, an adjustment knob is installed on the adjustment shaft, a positioning groove is opened on the adjustment knob, and a positioning rod is inserted in the positioning groove.

[0009] Furthermore, the self-locking mechanical gripper control assembly also includes an L-shaped frame installed on the arc block, the positioning rod is inserted into the L-shaped frame, a positioning spring is installed on the L-shaped frame, a pull block is installed at the end of the positioning rod, and the other end of the positioning spring is installed on the pull block.

[0010] Furthermore, the self-locking mechanical gripper disassembly and assembly assembly includes a guide sleeve installed on the secondary conductive arm, a fixing groove is provided on the self-locking mechanical gripper, a fixing frame is slidably installed in the guide sleeve, and an end of the fixing frame is clamped in the fixing groove.

[0011] Furthermore, the self-locking mechanical gripper disassembly and assembly assembly also includes a movable sleeve slidably connected to the auxiliary conductive arm, a connecting rod is rotatably mounted on the movable sleeve, the other end of the connecting rod is rotatably mounted on the fixed frame, the self-locking mechanical gripper disassembly and assembly assembly is installed with a fixed sleeve, one end of a fixed spring is installed on the fixed sleeve, and the other end of the fixed spring is installed on the movable sleeve.

[0012] Furthermore, the protective component includes an arc wind guide plate movably arranged on both sides of the main conductive arm, a connecting block is installed on the arc wind guide plate, a rotating rod is rotatably installed on the connecting block, a miniature connecting seat is rotatably installed on the other end of the rotating rod, a buffer spring is installed on the miniature connecting seat, a fan-shaped base is installed on the main conductive arm, the other end of the buffer spring is installed on the fan-shaped base, a damper is installed on the fan-shaped base, and the other end of the damper is installed on the miniature connecting seat.

[0013] Furthermore, the protection component also includes a support plate installed on the fan-shaped base, a support spring is installed on the support plate, the other end of the support spring is installed on the arc wind guide plate, a telescopic rod is installed on the arc wind guide plate, and the other end of the telescopic rod is installed on the support plate.

[0014] A method for using a self-locking conductive arm for a high-voltage disconnect switch, specifically comprising: S1. When an abnormality occurs in the high-voltage line, the current transformer will monitor the abnormality of the current and feed back to the control system of the high-voltage line. The control system of the high-voltage line will transmit the control signal to the control box to execute the tripping command. At this time, the control box will control the auxiliary conductive arm activity control part to adjust the rotation of the auxiliary conductive arm to fold the auxiliary conductive arm. The rotation and folding of the main conductive arm and the auxiliary conductive arm will separate the adjusting wheel and the micro-fine rotating wheel. At this time, under the action of the reset spring in the auxiliary conductive arm, the top rod will be mobilized to move in the reverse direction. The adjustable self-locking mechanical gripper will release the metal head contact rod of the high-voltage disconnector to disconnect the high-voltage disconnector and realize the tripping process.

[0015] S2. When the high-voltage line is normal, the main conductive arm rotates and extends on the movable control part of the main conductive arm, and the auxiliary conductive arm rotates and extends on the movable control part of the auxiliary conductive arm, which will drive the arc block and the push rod to move. Multiple sets of micro-refined wheels can refine the contact surface between the adjusting wheel and the roller, and at the same time drive the micro-refined wheel to rotate in the roller, which can reduce the friction loss of the micro-refined wheel and the adjusting wheel during contact. The positioning clamp rod is clamped in the hole of the corresponding positioning groove to fix the adjusting wheel to avoid the contact surface on the adjusting wheel from being concentrated, causing excessive contact surface loss at the same position, resulting in contact jamming. The contact between the adjusting wheel and the micro-refined wheel will push the push rod into the auxiliary conductive arm, and the push rod will overcome the resistance of the reset spring and move in the auxiliary conductive arm to control the self-locking mechanical gripper to realize the closing process.

[0016] S3. When the self-locking mechanical gripper needs to be disassembled and maintained, the fixed frame will slide outward in the guide sleeve and separate from the fixed groove. At this time, the self-locking mechanical gripper can be directly removed from the auxiliary conductive arm and maintained. When the maintained self-locking mechanical gripper needs to be installed on the auxiliary conductive arm, the fixed frame will slide forward in the guide sleeve and engage in the fixed groove, which can fix the self-locking mechanical gripper. The disassembly and assembly of the self-locking mechanical gripper is relatively convenient, and it is easy to maintain the self-locking mechanical gripper.

[0017] S4. When both sides of the self-locking conductive arm are subjected to strong wind force, the outer surface of the arc wind guide plate is designed as an arc surface, which can divert part of the lateral wind from both sides of the arc surface, reducing the wind load on the self-locking conductive arm. The impact caused by part of the wind load will be converted into the elastic potential energy of the buffer spring. At this time, the fan-shaped base will be pulled upward by the buffer spring, and the main conductive arm will be pulled upward by the fan-shaped base, changing the direction of the force and reducing the damage caused by the wind load to the structure of the self-locking conductive arm itself.

[0018] The beneficial effects of the present invention are: In the present invention, through the setting of the self-locking mechanical gripper control component, multiple groups of micro-refining wheels can refine the contact surface between the adjusting wheel and the roller, and at the same time drive the micro-refining wheel to rotate in the roller, which can reduce the friction loss between the micro-refining wheel and the adjusting wheel during contact. When used for a long time, the adjusting wheel can be rotated in the arc block to adjust the contact position of the adjusting wheel, so as to avoid the contact surface on the adjusting wheel from being concentrated, causing excessive contact surface loss at the same position and causing contact jamming.

[0019] In the present invention, by setting the disassembly and assembly component of the self-locking mechanical gripper, the movable sleeve can be pushed upwards, and the fixed frame can be driven to leave the fixed groove to perform disassembly and maintenance of the self-locking mechanical gripper. When the maintained self-locking mechanical gripper needs to be installed on the secondary conductive arm, the fixed spring will pull the movable sleeve to slide downward on the secondary conductive arm, and the fixed frame can be driven to slide forward in the guide sleeve and engage in the fixed groove, which can fix the self-locking mechanical gripper and facilitate the disassembly and maintenance of the self-locking mechanical gripper.

[0020] In the present invention, through the setting of the protective component, the rotation of the rotating rod will pull the micro-connecting seat upward, and the upward pulling of the micro-connecting seat will cause the buffer spring to be pulled upward, and a part of the impact caused by the wind load will be converted into the elastic potential energy of the buffer spring. The main conductive arm will be pulled upward by the fan-shaped base, which changes the direction of the force and reduces the damage caused by the wind load to the structure of the self-locking conductive arm itself. The support spring can support the arc wind guide plate and help the arc wind guide plate to reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1A three-dimensional structural schematic diagram of a self-locking conductive arm for a high-voltage disconnector and a method of using the same proposed by the present invention; Figure 2 A schematic diagram of a three-dimensional structure from another angle of a self-locking conductive arm for a high-voltage disconnector and a method of using the same proposed by the present invention; Figure 3 A schematic structural diagram of part A of a self-locking conductive arm for a high-voltage disconnector and a method of using the same proposed by the present invention; Figure 4 A schematic diagram of the structure of a roller, a micro-refined rotating wheel, etc. for a self-locking conductive arm for a high-voltage disconnector and a method for using the same proposed by the present invention; Figure 5 A schematic diagram of the structure of a self-locking conductive arm for a high-voltage disconnector and a method of using the same, including a movable steel ball and an annular rotating piece, proposed by the present invention; Figure 6 A schematic diagram of the structure of a self-locking conductive arm for a high-voltage disconnector and a method of using the same, including an adjusting knob and a positioning lever, etc., proposed by the present invention; Figure 7 A schematic diagram of the structure of a self-locking mechanical gripper disassembly and assembly assembly for a self-locking conductive arm of a high-voltage disconnector and a method of using the same proposed by the present invention; Figure 8 The present invention provides a schematic structural diagram of a protective component for a self-locking conductive arm of a high-voltage disconnector and a method of using the same.

[0022] In the figure: 1. mounting column; 2. control box; 3. main conductive arm; 4. main conductive arm movable control unit; 5. auxiliary conductive arm; 6. auxiliary conductive arm movable control unit; 7. self-locking mechanical gripper; 8. self-locking mechanical gripper control assembly; 81. ejector rod; 82. connecting frame; 83. roller; 84. annular groove; 85. micro-refining wheel; 86. arc block; 87. adjusting wheel; 88. rotating shaft; 89. annular rotating piece; 810. movable steel ball; 811. adjusting shaft; 812. adjusting knob; 813. positioning groove; 814 , positioning card rod; 815, L-shaped frame; 816, positioning spring; 817, pulling block; 9, self-locking mechanical gripper disassembly and assembly components; 91, guide sleeve; 92, fixing groove; 93, fixing frame; 94, movable sliding sleeve; 95, connecting rod; 96, fixed sliding sleeve; 97, fixing spring; 10, protection component; 101, arc air guide plate; 102, connecting block; 103, rotating rod; 104, miniature connecting seat; 105, fan-shaped base; 107, damper; 108, support plate; 109, support spring; 1010, telescopic rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example:

[0025] like Figure 1-8 As shown, this embodiment provides a self-locking conductive arm for a high-voltage disconnector and a method of using the same, comprising a mounting post 1 for mounting the self-locking conductive arm; a control box 2, arranged on the mounting post 1, for controlling the activity of the self-locking conductive arm; a main conductive arm 3, arranged at the end of the mounting post 1, for conducting current and assisting in rotating to adjust the on-off of the high-voltage disconnector; a main conductive arm activity control unit 4, arranged on the mounting post 1 and the main conductive arm 3, for adjusting the activity of the main conductive arm 3; an auxiliary conductive arm 5, arranged at the end of the main conductive arm 3, for conducting current and assisting in rotating to adjust the on-off of the high-voltage disconnector; an auxiliary ... on-off of the high-voltage disconnector The motion control part 6 is arranged on the main conductive arm 3 and the auxiliary conductive arm 5, and is used to adjust the activity of the auxiliary conductive arm 5; the self-locking mechanical gripper 7 is arranged at the end of the auxiliary conductive arm 5, and is used to adjust the on and off of the high-voltage disconnector; the self-locking mechanical gripper regulating component 8 is arranged on the auxiliary conductive arm 5 and the auxiliary conductive arm activity control part 6, and is used to adjust the self-locking mechanical gripper 7 to grasp, lock and release the high-voltage disconnector; the self-locking mechanical gripper disassembly and assembly component 9 is arranged on the auxiliary conductive arm 5 and the self-locking mechanical gripper 7, and is used for disassembly and assembly of the self-locking mechanical gripper 7; the protection component 10 is arranged on the main conductive arm 3, and is used for the protection of the self-locking conductive arm; When an abnormality occurs in the high-voltage line, the current transformer will monitor the abnormality of the current and feed back to the control system of the high-voltage line. The control system of the high-voltage line will transmit the control signal to the control box 2 to execute the tripping command. At this time, the control box 2 will control the auxiliary conductive arm activity control part 6 to adjust the rotation of the auxiliary conductive arm 5 to fold the auxiliary conductive arm 5. During the folding of the auxiliary conductive arm 5, the self-locking mechanical gripper regulating component 8 can adjust the self-locking mechanical gripper 7 to release the metal head contact rod of the high-voltage disconnector to disconnect the high-voltage disconnector and realize the tripping process. Then, the control box 2 can control the main conductive arm activity control part 4 to adjust the rotation of the main conductive arm 3 and fold the main conductive arm 3, so that the self-locking mechanical gripper 7 can be located below the high-voltage disconnector. When the high-voltage line is normal, the rotation and extension of the main conductive arm 3 and the auxiliary conductive arm 5 will cause the self-locking mechanical gripper to 7 is lifted up, and the self-locking mechanical gripper regulating component 8 can be used to adjust the self-locking mechanical gripper 7 to grab the metal head contact rod of the high-voltage disconnector to realize the connection of the high-voltage disconnector and the closing process, thereby protecting the high-voltage line. The self-locking mechanical gripper 7 can be disassembled and assembled by the self-locking mechanical gripper disassembly and assembly component 9, which is convenient for maintenance of the self-locking mechanical gripper 7. When the self-locking conductive arm is subjected to a large lateral wind force, the protective component 10 can divert part of the lateral wind movement and play a certain buffering role, thereby reducing the damage caused by the wind load to the structure of the self-locking conductive arm itself. It should be noted that the control and action process between the control box 2, the main conductive arm 3, the main conductive arm active control part 4, the auxiliary conductive arm 5, the auxiliary conductive arm active control part 6 and the self-locking mechanical gripper 7 is the existing technology, and the specific principle and structure are not repeated here.

[0026] In one embodiment, specifically, the self-locking mechanical gripper control assembly 8 includes a push rod 81 movably arranged in the auxiliary conductive arm 5, a connecting frame 82 is installed at the end of the push rod 81, a roller 83 is rotatably installed in the connecting frame 82, an annular groove 84 is opened on the roller 83, and multiple groups of miniature fine wheels 85 are rotatably arranged in the annular groove 84, an arc block 86 is installed on the movable control part 6 of the auxiliary conductive arm, and an adjusting wheel 87 is adjustably installed in the arc block 86.

[0027] When it is necessary to use the self-locking mechanical gripper regulating component 8 to act on the self-locking mechanical gripper 7 to achieve tripping and closing, the main conductive arm 3 rotates and extends on the main conductive arm movable control part 4, and the auxiliary conductive arm 5 rotates and extends on the auxiliary conductive arm movable control part 6, which will drive the arc block 86 and the top rod 81 to move, and the arc block 86 will drive the adjusting wheel 87 to move, and the top rod 81 will drive the roller 83 to move. The movement of the adjusting wheel 87 and the roller 83 will cause the adjusting wheel 87 to contact with the micro-refined rotating wheel 85 on the roller 83. By setting up multiple groups of micro-refined rotating wheels 85, the contact surface between the adjusting wheel 87 and the roller 83 can be refined, and at the same time, the micro-refined rotating wheel 85 will be driven to rotate in the roller 83, which can reduce the friction loss of the micro-refined rotating wheel 85 and the adjusting wheel 87 during contact. When used for a long time, the adjusting wheel 87 can be rotated in the arc block 86 to adjust the adjusting wheel. The contact position of the section wheel 87 avoids the contact surface on the adjusting wheel 87 from being concentrated, causing excessive contact surface loss at the same position and causing contact jamming. The contact between the adjusting wheel 87 and the micro-fine wheel 85 will push the push rod 81 into the auxiliary conductive arm 5. The push rod 81 overcomes the resistance of the reset spring in the auxiliary conductive arm 5 and controls the self-locking mechanical gripper 7 to realize the closing process. The rotation and folding of the main conductive arm 3 and the auxiliary conductive arm 5 will separate the adjusting wheel 87 and the micro-fine wheel 85. At this time, under the action of the reset spring in the auxiliary conductive arm 5, the push rod 81 will be mobilized to move in the reverse direction to adjust the self-locking mechanical gripper 7 to release the metal head contact rod of the high-voltage disconnector to realize the disconnection of the high-voltage disconnector and realize the tripping process. It should be noted that the movement of the push rod 81 to adjust the movement of the self-locking mechanical gripper 7 is a prior art, and the specific principle will not be repeated here.

[0028] In one embodiment, specifically, the self-locking mechanical gripper control assembly 8 also includes a rotating shaft 88 rotatably installed in the annular groove 84, a micro-refining wheel 85 is rotatably sleeved on the rotating shaft 88, an annular rotating plate 89 is installed on the rotating shaft 88, a movable steel ball 810 is movably installed in the micro-refining wheel 85, and the annular rotating plate 89 is rotatably set on the movable steel ball 810.

[0029] The micro-refining wheel 85 can be rotated by setting the rotating shaft 88. When the micro-refining wheel 85 rotates, the movable steel ball 810 will contact the annular rotating piece 89. The movement of the movable steel ball 810 can reduce the rotation friction and improve the smoothness of the rotation.

[0030] In one embodiment, specifically, the self-locking mechanical gripper control assembly 8 also includes an adjusting shaft 811 rotatably installed in the arc block 86, an adjusting wheel 87 is installed on the adjusting shaft 811, an adjusting knob 812 is installed on the adjusting shaft 811, a positioning groove 813 is opened on the adjusting knob 812, and a positioning rod 814 is inserted into the positioning groove 813.

[0031] When it is necessary to rotate the adjusting wheel 87 to adjust the effective position on the adjusting wheel 87, the adjusting knob 812 can be rotated. The rotation of the adjusting knob 812 can drive the adjusting shaft 811 to rotate. The rotation of the adjusting shaft 811 can drive the adjusting wheel 87 to rotate, so as to adjust the effective position of the adjusting wheel 87. After the adjustment is completed, the positioning rod 814 can be clamped in the hole position of the corresponding positioning groove 813 to fix the adjusting wheel 87.

[0032] In one embodiment, specifically, the self-locking mechanical gripper control assembly 8 also includes an L-shaped frame 815 installed on the arc block 86, the positioning rod 814 is inserted into the L-shaped frame 815, a positioning spring 816 is installed on the L-shaped frame 815, a pull block 817 is installed at the end of the positioning rod 814, and the other end of the positioning spring 816 is installed on the pull block 817.

[0033] When the activity of the positioning rod 814 needs to be adjusted, the pull block 817 can be pulled. When the pull block 817 is pulled, the positioning rod 814 can be pulled out of the positioning groove 813. At this time, the positioning spring 816 will be stretched. When the pull block 817 is released, the positioning rod 814 will be driven to be inserted into the corresponding positioning groove 813 under the action of the positioning spring 816.

[0034] In one embodiment, specifically, the self-locking mechanical gripper disassembly and assembly assembly 9 includes a guide sleeve 91 installed on the secondary conductive arm 5, a fixing groove 92 is opened on the self-locking mechanical gripper 7, a fixing frame 93 is slidably installed in the guide sleeve 91, and the end of the fixing frame 93 is clamped in the fixing groove 92.

[0035] When the self-locking mechanical gripper 7 needs to be disassembled and maintained, the fixing frame 93 slides outward in the guide sleeve 91 and separates from the fixing groove 92. At this time, the self-locking mechanical gripper 7 can be directly removed from the auxiliary conductive arm 5, and the self-locking mechanical gripper 7 can be maintained. When the maintained self-locking mechanical gripper 7 needs to be installed on the auxiliary conductive arm 5, the fixing frame 93 slides forward in the guide sleeve 91 and gets stuck in the fixing groove 92, which can fix the self-locking mechanical gripper 7. The disassembly and assembly of the self-locking mechanical gripper 7 is relatively convenient, and the maintenance of the self-locking mechanical gripper 7 is convenient.

[0036] In one embodiment, specifically, the self-locking mechanical gripper disassembly and assembly assembly 9 also includes a movable sleeve 94 slidably connected to the auxiliary conductive arm 5, a connecting rod 95 is rotatably mounted on the movable sleeve 94, the other end of the connecting rod 95 is rotatably mounted on the fixed frame 93, a fixed sleeve 96 is installed on the self-locking mechanical gripper disassembly and assembly assembly 9, one end of a fixed spring 97 is installed on the fixed sleeve 96, and the other end of the fixed spring 97 is installed on the movable sleeve 94.

[0037] The fixing spring 97 will pull the movable sleeve 94 to slide downward on the secondary conductive arm 5. The sliding downward of the movable sleeve 94 will drive the connecting rod 95 to rotate. The rotation of the connecting rod 95 will pull the fixing frame 93 to slide forward in the guide sleeve 91, thereby fixing the self-locking mechanical gripper 7. The movable sleeve 94 can be directly pushed upward to drive the fixing frame 93 to leave the fixing groove 92 to disassemble the self-locking mechanical gripper 7.

[0038] In one embodiment, specifically, the protection component 10 includes an arc wind guide plate 101 movably arranged on both sides of the main conductive arm 3, a connecting block 102 is installed on the arc wind guide plate 101, a rotating rod 103 is rotatably installed on the connecting block 102, a miniature connecting seat 104 is rotatably installed on the other end of the rotating rod 103, a buffer spring 105 is installed on the miniature connecting seat 104, a fan-shaped base 106 is installed on the main conductive arm 3, the other end of the buffer spring 105 is installed on the fan-shaped base 106, a damper 107 is installed on the fan-shaped base 106, and the other end of the damper 107 is installed on the miniature connecting seat 104.

[0039] When both sides of the self-locking conductive arm are subjected to strong wind force, the outer surface of the arc wind guide plate 101 is designed as an arc surface, which can divert part of the lateral wind from both sides of the arc surface, thereby reducing the wind load on the self-locking conductive arm. On the other hand, the lateral wind that is not diverted acts on the arc wind guide plate 101, causing the arc wind guide plate 101 to move toward the main conductive arm 3. The movement of the arc wind guide plate 101 will drive the connection block 102 to move, and the movement of the connection block 102 will drive the rotating rod 103 to rotate. The rotation of the rotating rod 103 will pull the micro-connection seat 104 upward. Pulling the micro-connection seat 104 upward will cause the buffer spring 105 to be pulled upward, and a part of the impact caused by the wind load will be converted into the elastic potential energy of the buffer spring 105. At this time, the fan-shaped base 106 will be subjected to the upward pulling force of the buffer spring 105, and the main conductive arm 3 will be subjected to the upward pulling force of the fan-shaped base 106, thereby changing the direction of the force and reducing the damage caused by the wind load to the structure of the self-locking conductive arm itself. The damper 107 enables the micro-connection seat 104 to move up and down stably to avoid skewing and consume the elastic potential energy of the buffer spring 105.

[0040] In one embodiment, specifically, the protective assembly 10 also includes a support plate 108 installed on the fan-shaped base 106, a support spring 109 is installed on the support plate 108, the other end of the support spring 109 is installed on the arc wind guide plate 101, a telescopic rod 1010 is installed on the arc wind guide plate 101, and the other end of the telescopic rod 1010 is installed on the support plate 108.

[0041] The support spring 109 can support the arc wind guide plate 101 and help the arc wind guide plate 101 to reset. The telescopic rod 1010 can improve the stability of the arc wind guide plate 101 and prevent the arc wind guide plate 101 from tilting during movement.

[0042] A method for using a self-locking conductive arm for a high-voltage disconnect switch, specifically comprising: S1. When an abnormality occurs in the high-voltage line, the current transformer will monitor the abnormality of the current and feed back to the control system of the high-voltage line. The control system of the high-voltage line will transmit the control signal to the control box 2 to execute the tripping command. At this time, the control box 2 will control the auxiliary conductive arm activity control unit 6 to adjust the rotation of the auxiliary conductive arm 5 to fold the auxiliary conductive arm 5. The rotation and folding of the main conductive arm 3 and the auxiliary conductive arm 5 will separate the adjusting wheel 87 and the micro-fine rotating wheel 85. At this time, under the action of the reset spring in the auxiliary conductive arm 5, the top rod 81 will be mobilized to move in the reverse direction. The adjustable self-locking mechanical gripper 7 releases the metal head contact rod of the high-voltage disconnector to disconnect the high-voltage disconnector and realize the tripping process.

[0043] S2. When the high-voltage line is normal, the main conductive arm 3 rotates and extends on the main conductive arm movable control part 4, and the auxiliary conductive arm 5 rotates and extends on the auxiliary conductive arm movable control part 6, which will drive the arc block 86 and the push rod 81 to move. Multiple groups of micro-refined wheels 85 can refine the contact surface between the adjusting wheel 87 and the roller 83, and at the same time drive the micro-refined wheel 85 to rotate in the roller 83, which can reduce the friction loss of the micro-refined wheel 85 and the adjusting wheel 87 during contact. The positioning clamping rod 814 is clamped in the hole position of the corresponding positioning groove 813 to fix the adjusting wheel 87 to avoid the contact surface on the adjusting wheel 87 being concentrated, causing excessive contact surface loss at the same position, resulting in contact jamming. Through the contact between the adjusting wheel 87 and the micro-refined wheel 85, the push rod 81 will be pushed into the auxiliary conductive arm 5, and the push rod 81 will overcome the resistance of the reset spring in the auxiliary conductive arm 5 to control the self-locking mechanical gripper 7 to realize the closing process.

[0044] S3. When the self-locking mechanical gripper 7 needs to be disassembled and maintained, the fixing frame 93 slides outward in the guide sleeve 91 and separates from the fixing groove 92. At this time, the self-locking mechanical gripper 7 can be directly removed from the auxiliary conductive arm 5, and the self-locking mechanical gripper 7 can be maintained. When the maintained self-locking mechanical gripper 7 needs to be installed on the auxiliary conductive arm 5, the fixing frame 93 slides forward in the guide sleeve 91 and engages in the fixing groove 92, which can fix the self-locking mechanical gripper 7. The disassembly and assembly of the self-locking mechanical gripper 7 is relatively convenient, and the maintenance of the self-locking mechanical gripper 7 is convenient.

[0045] S4. When both sides of the self-locking conductive arm are subjected to strong wind force, the outer surface of the arc wind guide plate 101 is designed as an arc surface, which can divert part of the lateral wind from both sides of the arc surface, thereby reducing the wind load on the self-locking conductive arm. The impact caused by a part of the wind load will be converted into the elastic potential energy of the buffer spring 105. At this time, the fan-shaped base 106 will be subjected to the upward pulling force of the buffer spring 105, and the main conductive arm 3 will be subjected to the upward pulling force of the fan-shaped base 106, thereby changing the direction of the force and reducing the influence of the wind load on the structure of the self-locking conductive arm itself.

[0046] Working principle: When in use, if an abnormal current occurs in the high-voltage line, the current transformer will monitor the abnormal current and feed back to the control system of the high-voltage line. The control system of the high-voltage line will transmit the control signal to the control box 2 to execute the tripping command. At this time, the control box 2 will control the auxiliary conductive arm activity control unit 6 to adjust the rotation of the auxiliary conductive arm 5 to fold the auxiliary conductive arm 5. The rotation and folding of the main conductive arm 3 and the auxiliary conductive arm 5 will separate the adjusting wheel 87 and the micro-fine rotating wheel 85. At this time, under the action of the reset spring in the auxiliary conductive arm 5, the top rod 81 will be mobilized to move in the reverse direction. The adjustable self-locking mechanical gripper 7 releases the metal head contact rod of the high-voltage disconnector to disconnect the high-voltage disconnector and realize the tripping process. When the high-voltage line is normal, the main conductive arm 3 is in the main conductive arm activity control unit 4, and the secondary conductive arm 5 rotates and extends on the secondary conductive arm movable control part 6, which will drive the arc block 86 and the top rod 81 to move, and the arc block 86 will drive the adjusting wheel 87 to move, and the top rod 81 will drive the roller 83 to move. The movement of the adjusting wheel 87 and the roller 83 will cause the adjusting wheel 87 to contact with the micro-refining wheel 85 on the roller 83. By setting a plurality of groups of micro-refining wheels 85, the contact surface between the adjusting wheel 87 and the roller 83 can be refined, and at the same time, the micro-refining wheel 85 will be driven to rotate in the roller 83, which can reduce the friction loss of the micro-refining wheel 85 and the adjusting wheel 87 during contact. When the micro-refining wheel 85 rotates, the movable steel ball 810 will contact with the annular rotating piece 89, and the movement of the movable steel ball 810 can reduce the rotation friction, thereby improving The smoothness of rotation, when used for a long time, the adjusting wheel 87 can be rotated in the arc block 86 to adjust the contact position of the adjusting wheel 87, and the adjusting knob 812 can be rotated. The rotation of the adjusting knob 812 can drive the adjusting shaft 811 to rotate, and the rotation of the adjusting shaft 811 can drive the adjusting wheel 87 to rotate, and the action position of the adjusting wheel 87 can be adjusted. After the adjustment is completed, the positioning clamping rod 814 can be clamped in the hole position of the corresponding positioning groove 813 to fix the adjusting wheel 87 to avoid the contact surface on the adjusting wheel 87 being concentrated to cause excessive loss of the contact surface at the same position, resulting in contact jamming. The contact between the adjusting wheel 87 and the micro-refining wheel 85 will push the push rod 81 into the auxiliary conductive arm 5, and the push rod 81 will overcome the resistance of the reset spring in the auxiliary conductive arm 5 to control the self-locking. The mechanical gripper 7 realizes the closing process. It should be noted that the movement of the self-locking mechanical gripper 7 is regulated by the movement of the push rod 81, which is a prior art. The specific principle will not be repeated here. When the self-locking mechanical gripper 7 needs to be disassembled and maintained, the movable sleeve 94 is directly pushed upward to drive the fixed frame 93 to leave the fixed groove 92, so that the self-locking mechanical gripper 7 can be disassembled and maintained. When the maintained self-locking mechanical gripper 7 needs to be installed on the secondary conductive arm 5, the fixed spring 97 will pull the movable sleeve 94 to slide downward on the secondary conductive arm 5. The downward sliding of the movable sleeve 94 will drive the connecting rod 95 to rotate. The rotation of the connecting rod 95 will pull the fixed frame 93 to slide forward in the guide sleeve 91. The fixed frame 93 slides forward in the guide sleeve 91 and is engaged in the fixed groove 92.It can fix the self-locking mechanical gripper 7, and the disassembly and assembly of the self-locking mechanical gripper 7 is relatively convenient, which is convenient for the maintenance of the self-locking mechanical gripper 7. When the two sides of the self-locking conductive arm are subjected to large wind force, the outer surface of the arc wind guide plate 101 is designed as an arc surface, which can divert part of the lateral wind from the two sides of the arc surface, thereby reducing the wind load on the self-locking conductive arm. On the other hand, the lateral wind that is not diverted acts on the arc wind guide plate 101, which will cause the arc wind guide plate 101 to move toward the direction close to the main conductive arm 3. The movement of the arc wind guide plate 101 will drive the connecting The connecting block 102 moves, and the movement of the connecting block 102 drives the rotating rod 103 to rotate. The rotating rod 103 pulls the micro-connecting seat 104 upward. The upward pulling of the micro-connecting seat 104 causes the buffer spring 105 to be pulled upward. A part of the impact caused by the wind load will be converted into the elastic potential energy of the buffer spring 105. At this time, the fan-shaped base 106 will be pulled upward by the buffer spring 105, and the main conductive arm 3 will be pulled upward by the fan-shaped base 106, changing the direction of the force and reducing the damage to the structure of the self-locking conductive arm caused by the wind load.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-locking conductive arm for a high-voltage disconnector, comprising: A mounting post (1) for mounting a self-locking conductive arm; A control box (2) is arranged on the mounting column (1) and is used for controlling the movement of the self-locking conductive arm; A main conductive arm (3) is arranged at the end of the mounting column (1) and is used for conducting current and assisting in rotating and adjusting the on and off of the high-voltage disconnect switch; A main conductive arm activity control unit (4) is arranged on the mounting column (1) and the main conductive arm (3) and is used to adjust the activity of the main conductive arm (3); The auxiliary conductive arm (5) is arranged at the end of the main conductive arm (3) and is used for conducting current and assisting in rotating and adjusting the on and off of the high-voltage disconnect switch; A secondary conductive arm activity control unit (6), arranged on the main conductive arm (3) and the secondary conductive arm (5), and used for adjusting the activity of the secondary conductive arm (5); A self-locking mechanical gripper (7) is arranged at the end of the auxiliary conductive arm (5) and is used to adjust the on and off of the high-voltage disconnect switch; A self-locking mechanical gripper regulating component (8), arranged on the auxiliary conductive arm (5) and the auxiliary conductive arm movable control part (6), and used for regulating the self-locking mechanical gripper (7) to grasp, lock and release the high-voltage disconnector; A self-locking mechanical gripper disassembly and assembly component (9), arranged on the auxiliary conductive arm (5) and the self-locking mechanical gripper (7), and used for disassembly and assembly of the self-locking mechanical gripper (7); The protection component (10) is arranged on the main conductive arm (3) and is used for protecting the self-locking conductive arm.

2. A self-locking conductive arm for a high-voltage disconnector according to claim 1, characterized in that: The self-locking mechanical gripper control assembly (8) comprises a push rod (81) movably arranged in the auxiliary conductive arm (5), a connecting frame (82) is installed at the end of the push rod (81), a roller (83) is rotatably installed in the connecting frame (82), an annular groove (84) is formed on the roller (83), and a plurality of groups of micro-fine wheels (85) are rotatably arranged in the annular groove (84), an arc block (86) is installed on the auxiliary conductive arm movable control part (6), and an adjusting wheel (87) is adjustably installed in the arc block (86).

3. A self-locking conductive arm for a high-voltage disconnector according to claim 2, characterized in that: The self-locking mechanical gripper control assembly (8) further comprises a rotating shaft (88) rotatably mounted in the annular groove (84); the micro-refining rotating wheel (85) is rotatably sleeved on the rotating shaft (88); an annular rotating plate (89) is mounted on the rotating shaft (88); a movable steel ball (810) is movably mounted in the micro-refining rotating wheel (85); and the annular rotating plate (89) is rotatably mounted on the movable steel ball (810).

4. A self-locking conductive arm for a high-voltage disconnector according to claim 3, characterized in that: The self-locking mechanical gripper control assembly (8) further comprises an adjustment shaft (811) rotatably mounted in the arc block (86); the adjustment wheel (87) is mounted on the adjustment shaft (811); an adjustment knob (812) is mounted on the adjustment shaft (811); a positioning groove (813) is formed on the adjustment knob (812); and a positioning clamping rod (814) is inserted into the positioning groove (813).

5. A self-locking conductive arm for a high-voltage disconnector according to claim 4, characterized in that: The self-locking mechanical gripper control assembly (8) further comprises an L-shaped frame (815) mounted on the arc block (86), the positioning rod (814) being inserted into the L-shaped frame (815), a positioning spring (816) being mounted on the L-shaped frame (815), a pull block (817) being mounted at the end of the positioning rod (814), and the other end of the positioning spring (816) being mounted on the pull block (817).

6. A self-locking conductive arm for a high-voltage disconnector according to claim 1, characterized in that: The self-locking mechanical gripper disassembly and assembly component (9) comprises a guide sleeve (91) mounted on the auxiliary conductive arm (5), a fixing groove (92) is provided on the self-locking mechanical gripper (7), a fixing frame (93) is slidably mounted in the guide sleeve (91), and an end of the fixing frame (93) is clamped in the fixing groove (92).

7. A self-locking conductive arm for a high-voltage disconnector according to claim 6, characterized in that: The self-locking mechanical gripper disassembly and assembly component (9) further comprises a movable sleeve (94) slidably sleeved on the auxiliary conductive arm (5), a connecting rod (95) being rotatably mounted on the movable sleeve (94), the other end of the connecting rod (95) being rotatably mounted on the fixed frame (93), a fixed sleeve (96) being mounted on the self-locking mechanical gripper disassembly and assembly component (9), one end of a fixed spring (97) being mounted on the fixed sleeve (96), the other end of the fixed spring (97) being mounted on the movable sleeve (94).

8. The self-locking conductive arm for a high-voltage disconnector according to claim 1, characterized in that: The protection component (10) comprises an arc wind deflector (101) movably arranged on both sides of the main conductive arm (3); a connecting block (102) is mounted on the arc wind deflector (101); a rotating rod (103) is rotatably mounted on the connecting block (102); a miniature connecting seat (104) is rotatably mounted on the other end of the rotating rod (103); a buffer spring (105) is mounted on the miniature connecting seat (104); a fan-shaped base (106) is mounted on the main conductive arm (3); the other end of the buffer spring (105) is mounted on the fan-shaped base (106); a damper (107) is mounted on the fan-shaped base (106); and the other end of the damper (107) is mounted on the miniature connecting seat (104).

9. A self-locking conductive arm for a high-voltage disconnector according to claim 9, characterized in that: The protection assembly (10) further comprises a support plate (108) mounted on the fan-shaped base (106), a support spring (109) being mounted on the support plate (108), the other end of the support spring (109) being mounted on the arc wind guide plate (101), a telescopic rod (1010) being mounted on the arc wind guide plate (101), the other end of the telescopic rod (1010) being mounted on the support plate (108).

10. The method for using the self-locking conductive arm for a high-voltage disconnector according to claim 1, specifically comprising: S1. When an abnormality occurs in the high-voltage line, the current transformer will detect the abnormality of the current and feed it back to the control system of the high-voltage line. The control system of the high-voltage line will transmit a control signal to the control box (2) to execute the tripping command. At this time, the control box (2) will control the auxiliary conductive arm activity control unit (6) to adjust the rotation of the auxiliary conductive arm (5) so that the auxiliary conductive arm (5) is folded. The rotation and folding of the main conductive arm (3) and the auxiliary conductive arm (5) will cause the regulating wheel (87) and the micro-fine rotating wheel (85) to separate. At this time, under the action of the reset spring in the auxiliary conductive arm (5), the top rod (81) will be mobilized to move in the reverse direction. The adjustable self-locking mechanical gripper (7) releases the metal head contact rod of the high-voltage disconnector to disconnect the high-voltage disconnector and realize the tripping process; S2. When the high-voltage line is normal, the main conductive arm (3) rotates and extends on the main conductive arm movable control part (4), and the auxiliary conductive arm (5) rotates and extends on the auxiliary conductive arm movable control part (6), which drives the arc block (86) and the top rod (81) to move. The plurality of sets of micro-fine wheels (85) can refine the contact surface between the adjustment wheel (87) and the roller (83), and at the same time drive the micro-fine wheels (85) to rotate in the roller (83), thereby reducing the micro-fine wheels (85) and the adjustment wheel (87) when in contact. The friction loss is reduced, the positioning clamp rod (814) is clamped in the hole of the corresponding positioning groove (813) to fix the adjusting wheel (87) to avoid excessive contact surface loss at the same position due to the concentration of contact surfaces on the adjusting wheel (87), resulting in contact jamming. The contact between the adjusting wheel (87) and the micro-fine rotating wheel (85) will push the push rod (81) into the auxiliary conductive arm (5), and the push rod (81) will overcome the resistance of the reset spring in the auxiliary conductive arm (5) to control the self-locking mechanical gripper (7) to achieve the closing process; S3. When the self-locking mechanical gripper (7) needs to be disassembled and maintained, the fixing frame (93) slides outward in the guide sleeve (91) and separates from the fixing groove (92). At this time, the self-locking mechanical gripper (7) can be directly disassembled from the auxiliary conductive arm (5) and the self-locking mechanical gripper (7) can be maintained. When the maintained self-locking mechanical gripper (7) needs to be installed on the auxiliary conductive arm (5), the fixing frame (93) slides forward in the guide sleeve (91) and engages in the fixing groove (92), which can fix the self-locking mechanical gripper (7). The disassembly and assembly of the self-locking mechanical gripper (7) is relatively convenient, and the maintenance of the self-locking mechanical gripper (7) is convenient. S4. When both sides of the self-locking conductive arm are subjected to a large wind force, the outer surface of the arc wind guide plate (101) is designed as an arc surface, which can divert part of the lateral wind from both sides of the arc surface, thereby reducing the wind load on the self-locking conductive arm. The impact caused by a part of the wind load will be converted into the elastic potential energy of the buffer spring (105). At this time, the fan-shaped base (106) will be subjected to the upward pulling force of the buffer spring (105), and the main conductive arm (3) will be subjected to the upward pulling force of the fan-shaped base (106), thereby changing the direction of the force and reducing the damage caused by the wind load to the structure of the self-locking conductive arm itself.

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