A pole-mounted circuit breaker fixture and method of use thereof

Abstract

The application discloses a pole-mounted circuit breaker fixing device and a use method thereof, relates to the technical field of pole-mounted circuit breakers, and comprises a box body, lifting assemblies are arranged inside the two sides of the box body, a fixing sleeve is slidably connected inside the lifting assembly, a capacitor is placed on the top of the fixing sleeve, positioning bosses are connected to the two sides of the outer wall of the capacitor, mounting grooves matched with the positioning bosses are formed in the two sides of the fixing sleeve, and pre-fixing assemblies are arranged on one side of the mounting grooves. The limiting claws of the pre-fixing assemblies are matched with the positioning bosses, the quick pre-fixing of the capacitor during installation is realized, in combination with the retraction process of the fixing sleeve driven by the lifting assembly, the clamping assembly is automatically clamped to the capacitor by means of the conical surface of the supporting seat, a double fixing structure is formed, the installation stability of the capacitor in the complex outdoor environment is greatly improved, and the fixing capacity of the capacitor is increased.

Description

Technical Field

[0001] This invention relates to the field of pole-mounted circuit breaker technology, and more specifically to a pole-mounted circuit breaker fixing device and its usage method. Background Technology

[0002] A pole-mounted circuit breaker is an outdoor high-voltage switchgear installed on a utility pole. It is primarily used for sectionalizing, isolating faults, and controlling loads in power distribution lines, and is one of the core protection devices in a power distribution network. Because pole-mounted circuit breakers are installed on outdoor utility poles, they typically cannot be connected to low-voltage mains power. Therefore, a capacitive converter becomes the primary power supply solution. It couples the electric field energy of the high-voltage line, converting high-voltage electrical energy into low-voltage electrical energy suitable for the circuit breaker's control circuit, ensuring the normal operation of the circuit breaker's opening and closing operations, fault detection, and signal transmission functions.

[0003] Current pole-mounted circuit breakers still have the following problems:

[0004] 1. The existing fixing structure of the power taking capacitor of the pole-mounted circuit breaker only realizes the installation of the capacitor through a single fixing method. In complex environments such as strong winds and vibrations outdoors, it is easy to loosen and shift. In addition, there is no pre-positioning guide structure during capacitor installation, which makes it difficult to align the capacitor and affects the assembly efficiency and connection stability.

[0005] 2. Traditionally, the conductive connection between the power capacitor and the circuit breaker is mostly achieved by bolt fastening or welding. This is not only cumbersome to operate, but also means that when the capacitor is damaged, the capacitor and the line are still connected, which can easily lead to high voltage entering the equipment enclosure and causing secondary equipment to burn out.

[0006] 3. Existing devices mostly use independent power sources to control the capacitor lifting and conductive connection actions separately, which requires additional power supply or hydraulic equipment, resulting in poor adaptability and cumbersome operation;

[0007] Therefore, it is necessary to propose a pole-mounted circuit breaker fixing device and its usage method to solve the above problems. Summary of the Invention

[0008] In view of the above situation and to overcome the defects of the prior art, the present invention provides a pole-mounted circuit breaker fixing device and its usage method to solve the problems mentioned in the background art.

[0009] The technical solution is as follows: The present invention includes a housing, with lifting components arranged inside both sides of the housing. A fixed sleeve is slidably connected inside the lifting components. A capacitor is placed on the top of the fixed sleeve. Positioning bosses are connected to both sides of the outer wall of the capacitor. Mounting grooves that cooperate with the positioning bosses are opened on both sides of the fixed sleeve. A pre-fixing component is arranged on one side of the mounting groove. A clamping component for fixing the outer wall of the capacitor is arranged inside the fixed sleeve. A support base located below the fixed sleeve is connected inside the housing. A conical surface that cooperates with the clamping component is arranged on the top of the support base.

[0010] The capacitor has terminals connected to its top and an upper housing connected to its top. A conductive rod is connected inside the upper housing. A movable housing and a connecting assembly are slidably connected to the outer wall of the conductive rod. The connecting assembly cooperates with the terminals. A circuit breaker is connected to the top of the housing. A power supply wire is connected between the circuit breaker and the conductive rod.

[0011] Furthermore, the lifting assembly includes a rotating sleeve rotatably connected to the upper part of the support base, the rotating sleeve being externally connected to a rotation drive structure, a spiral sliding groove being formed on the inner wall of the rotating sleeve, a fixed sleeve being slidably connected inside the rotating sleeve, a sliding pin being connected to the outer wall of the fixed sleeve and located in the sliding groove, and a spline rod extending into the support base being connected to the bottom of the fixed sleeve, the spline rod being slidably connected to the support base.

[0012] Furthermore, a planar groove corresponding to the mounting groove is formed on the outer wall of the fixing sleeve. The pre-fixing component includes a limiting claw rotatably connected to the planar groove. The bottom of the limiting claw and the planar groove are connected by a spring. An inclined surface is formed on the top of the limiting claw. A ring plate is connected to the bottom of the outer wall of the capacitor. A sealing ring is connected to the bottom of the ring plate.

[0013] Furthermore, the fixed sleeve has circumferentially distributed cavities inside, and the clamping assembly includes a jaw rotatably connected to the cavity. The bottom of the jaw is rotatably connected to a roller that mates with a conical surface. The bottom of the jaw and the cavity are connected by a spring, and the top of the jaw is connected to a pad that contacts the outer wall of the capacitor.

[0014] Furthermore, a first hydraulic cylinder is connected between the upper housing and the movable housing. The first hydraulic cylinder is externally connected to a fluid supply device. The connecting assembly includes a movable frame that is slidably connected inside the movable housing. A clamping piece that connects to a terminal is rotatably connected inside the movable frame. The clamping piece and the movable frame are connected by a spring. The end of the clamping piece is provided with an arc surface. An unlocking assembly for fixing the movable frame is connected to the movable housing.

[0015] Furthermore, the movable housing is externally connected to an unlocking housing. The unlocking assembly includes a strip frame slidably connected within the unlocking housing. The strip frame and the unlocking housing are connected by a spring. An unlocking plate is connected to the end of the movable frame away from the terminal. Symmetrically arranged positioning holes are connected to the outer wall of the unlocking plate. A first positioning frame and a second positioning frame, inserted into the positioning holes, are slidably connected to the side wall of the upper housing. A first baffle and a second baffle are connected to the movable frame. The first positioning frame and the second positioning frame have mutually cooperating inclined surfaces on the side facing the first baffle and the second baffle. A fixing groove for inserting the second baffle is provided on the second positioning frame.

[0016] Furthermore, the first baffle and the second baffle are both connected to the movable housing by springs. An electromagnet is connected to the movable housing. A permanent magnet that cooperates with the electromagnet is connected to the first baffle. A top rod is connected to the top of the upper housing. The unlocking plate and the housing are connected by springs. A first inclined plate is connected to the upper housing. A second inclined plate that cooperates with the first inclined plate is connected to one side of the second baffle.

[0017] Furthermore, a rotating rod is rotatably connected inside the housing, and the rotating rod and the rotating sleeve are connected by a gear transmission structure. One end of the rotating rod is connected to a handle located outside the housing. A second hydraulic cylinder is provided at the end of the rotating rod away from the handle. The second hydraulic cylinder is connected to the first hydraulic cylinder. A threaded part is provided at the end of the rotating rod away from the handle. The piston of the second hydraulic cylinder is connected to a threaded sleeve that is threadedly connected to the rotating rod. A support frame is connected to the support base, and the threaded sleeve is slidably connected to the support frame.

[0018] Furthermore, a rain cover is connected to the top of the capacitor. The rain cover includes an upper cover and a lower cover, which are connected by a snap fastener. The bottom of the lower cover is provided with a rainproof cone surface.

[0019] As having the same inventive concept as the above-mentioned technical solution, this invention also claims protection for a method of using a pole-mounted circuit breaker fixing device, which includes the following steps:

[0020] S1. Pre-fixing: Rotate the rotating rod to install the capacitor in the extended fixing sleeve. The pre-fixing component limits and fixes the positioning boss.

[0021] S2. Power connection: Install the upper housing on top of the capacitor, and connect the upper housing and the circuit breaker with the power supply wire;

[0022] S3, Fixing: Reverse the rotating rod, the fixing sleeve retracts into the box, the clamping assembly fixes the capacitor, and the clamps in the moving frame will contact the terminals to connect and fix the terminals;

[0023] S4. Usage: After the circuit breaker is connected, the current enters the capacitor through the power take-up wire and clips, and the capacitor supplies power to the electrical equipment.

[0024] S5. Damage: Upon detecting capacitor damage, the electromagnet inside the unlocked housing is de-energized, the movable frame retracts into the movable housing, disconnects the terminal connection, and blocks the connection between the power supply wire and the capacitor.

[0025] Compared with existing known technologies, the technical solution provided by this invention has the following significant advantages:

[0026] 1. By cooperating with the limiting claws and positioning bosses of the pre-fixing component, the capacitor can be quickly pre-fixed during installation. Combined with the lifting component driving the fixing sleeve to retract, the clamping component automatically clamps the capacitor with the help of the conical surface of the support seat, forming a double fixing structure. This greatly improves the installation stability of the capacitor in complex outdoor environments and increases the fixing ability of the capacitor. At the same time, the rotating rod drives the fixing sleeve to lift and lower through the gear transmission structure, so that the capacitor can be removed and installed without complicated operations, reducing the difficulty of inspection and maintenance.

[0027] 2. The connection component uses clips to elastically clamp the terminals, ensuring a stable conductive connection between the power supply wire and the capacitor. In conjunction with the first hydraulic cylinder driving the moving housing for precise docking, it improves the clamping and fixing ability during terminal connection. Furthermore, an unlocking component is set up in conjunction with an electromagnet. When capacitor damage is detected, the electromagnet loses power and can quickly disconnect the connection between the clips and the terminals, blocking the conduction of fault current. This not only does not affect the fixing ability during connection, but also prevents high voltage from entering the enclosure and causing secondary equipment burnout or electric shock accidents.

[0028] 3. The rotating rod integrates gear transmission and threaded transmission functions. During rotation, it can drive the fixed sleeve to rise and fall through the gear structure, and push the piston of the second hydraulic cylinder through the threaded sleeve to realize the circulation of hydraulic oil between the second hydraulic cylinder and the first hydraulic cylinder. It can simultaneously complete the capacitor fixing and conductive connection actions without the need for an additional power source to achieve the coordinated operation of multiple components. Moreover, the overall structure combines mechanical transmission and hydraulic drive, and the operation can be completed by simply turning the handle, which greatly reduces the labor intensity of outdoor operations and is suitable for the high-altitude operation scenarios of pole-mounted circuit breakers.

[0029] 4. The conical structure and sealing ring design of the rain cover effectively prevent rainwater from entering, improving the protection performance for outdoor use. At the same time, it can adapt to the installation and fixing of power supply wires and terminals. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the housing and capacitor structure in this invention;

[0031] Figure 2This is a schematic diagram of the box body and handle structure in this invention;

[0032] Figure 3 This is a schematic diagram of the rotating sleeve and fixed sleeve structure in this invention;

[0033] Figure 4 This is a schematic diagram of the support base and rotating sleeve structure in this invention;

[0034] Figure 5 This is a schematic diagram of the movable housing and movable frame structure in this invention;

[0035] Figure 6 This is a schematic diagram illustrating the movement of the movable housing and the movable frame in this invention;

[0036] Figure 7 This is a schematic diagram illustrating the unlocking component's actions in this invention;

[0037] Figure 8 This is a schematic diagram of the rotating rod and threaded sleeve structure in this invention;

[0038] Figure 9 This is a schematic diagram illustrating its use in this invention.

[0039] Figure label:

[0040] 101. Housing; 102. Fixing sleeve; 103. Capacitor; 104. Positioning boss; 105. Mounting slot; 106. Support base; 107. Terminal; 108. Upper housing; 109. Conductive rod; 110. Circuit breaker; 111. Power supply wire; 112. Moving housing; 201. Rotating sleeve; 202. Sliding groove; 203. Spline rod; 204. Flat groove; 205. Limiting claw; 206. Ring edge plate; 207. Clamping claw; 301. First hydraulic cylinder; 302. Moving frame; 303. Clamping piece; 401. Unlocking housing; 4 02. Strip frame; 403. Unlocking plate; 404. Positioning hole; 405. First positioning frame; 406. Second positioning frame; 407. First baffle; 408. Second baffle; 409. Fixing groove; 410. Electromagnet; 411. Top rod; 412. First inclined panel; 413. Second inclined panel; 501. Rotating rod; 502. Gear transmission structure; 503. Handle; 504. Second hydraulic cylinder; 505. Threaded sleeve; 113. Upper cover; 114. Lower cover; 115. Rainproof conical surface; 601. Upper connector; 602. Lower connector. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] The conventional components and key load-bearing components in this case are selected in accordance with standards in terms of material selection, heat treatment process and structural dimensions to ensure that they have sufficient strength, stiffness and fatigue resistance under rated load and expected working conditions. These are all conventional design considerations well known to those skilled in the art.

[0043] Depend on Figures 1 to 9 The device includes a housing 101, which is mounted on a supporting structure, such as a utility pole. A capacitor 103 and a circuit breaker 110 are mounted on the top. Lifting assemblies are located inside both sides of the housing 101. Fixed sleeves 102 are slidably connected to the lifting assemblies, and the capacitor 103 is placed on top of the fixed sleeves 102. The capacitor 103 is installed inside the fixed sleeves 102, and its movement facilitates replacement and maintenance. Positioning bosses 104 are connected to both sides of the outer wall of the capacitor 103. Mounting grooves 105 are formed on both sides of the fixed sleeves 102 to mate with the positioning bosses 104. The positioning bosses 104 serve as positioning guides, facilitating pre-fixation with the fixed sleeves 102. A pre-fixing assembly is located on one side of the mounting grooves 105. A clamping assembly is located inside the fixed sleeves 102 to secure the outer wall of the capacitor 103, providing stable clamping for the capacitor. The housing 101 is internally connected to a support base 106 located below the fixed sleeve 102. The top of the support base 106 is provided with a tapered surface that mates with the clamping assembly. (Refer to...) Figure 3 The top of the support base 106 is a tapered surface, which is used to drive the clamping assembly to perform actions;

[0044] The capacitor 103 has a terminal 107 connected to its top for wiring, which is used to connect to the circuit breaker 110 to draw power. Its bottom is connected to electrical equipment via a cable. An upper housing 108 is connected to the top of the capacitor 103, and a conductive rod 109 is connected inside the upper housing 108. The conductive rod 109 conducts electricity. A movable housing 112 and a connecting assembly are slidably connected to the outer wall of the conductive rod 109. The connecting assembly is located inside the movable housing 112 and moves with it. The connecting assembly cooperates with the terminal 107. The circuit breaker 110 is connected to the top of the housing 101. A power-drawing wire 111 connects the circuit breaker 110 and the conductive rod 109, and the circuit breaker 110 is connected to the capacitor 103 via the power-drawing wire 111. Specifically, there are two capacitors 103, which are powered from both sides. One capacitor 103 is installed at the incoming and outgoing ends of the circuit breaker 110, respectively, and they are powered from phases A and C. They serve as backups for each other, which improves the reliability of power supply and energy storage capacity, and is suitable for stable power supply to secondary equipment such as FTU.

[0045] Since the fixed sleeve 102 needs to be located inside the housing 101 during use, and the fixed sleeve 102 needs to be kept at the top for easy installation and pre-fixation when replacing and maintaining the capacitor 103, a structure is needed that can drive the fixed sleeve 102 to move stably up and down. The following provides a structure for moving the fixed sleeve 102 up and down: Specifically, the lifting assembly includes a rotating sleeve 201 rotatably connected to the support base 106, with the top of the rotating sleeve 201 rotatably connected to the housing 101. The rotating sleeve 201 is externally connected to a rotation drive structure, and a spiral sliding groove 202 is provided on the inner wall of the rotating sleeve 201. The fixed sleeve 102 is slidably connected inside the rotating sleeve 201, and the fixed sleeve 102 moves up and down within the rotating sleeve 201. A sliding pin located within a sliding groove 202 is connected to the outer wall of the fixed sleeve 102. A splined rod 203 extending into the support base 106 is connected to the bottom of the fixed sleeve 102, restricting the fixed sleeve 102 to only move up and down. The splined rod 203 is slidably connected to the support base 106. When the sleeve 201 rotates, the sliding groove 202 and the splined rod 203 cooperate to allow the fixed sleeve 102 to move up and down. When it is at the top, it facilitates the installation and removal of the capacitor 103; when it is at the bottom, it serves to fix the sleeve.

[0046] Since the bottom of capacitor 103 needs to be connected to a cable, a groove is provided at the bottom of the fixing sleeve 102 for placing the cable connector. The support base 106 is equipped with a cable for connecting capacitor 103 to electrical equipment. One end of the cable is connected to an upper connector 601 and is located in the groove at the bottom of the fixing sleeve 102. The other end is connected to a lower connector 602 and is located on the support base 106. The lower connector 602 is connected to the electrical equipment.

[0047] The cable passes through the inside of the spline rod 203. After the cable is connected to the capacitor 103, the excess cable can be retracted into the support base 106. In one embodiment, a counterweight is connected to the cable. When the cable is connected to the capacitor 103, it is driven by the counterweight to pass through the spline rod 203 and automatically retract into the support base 106.

[0048] In another embodiment, a spring connects the middle of the cable and the top of the support 106. When the fixing sleeve 102 moves upward, the cable and spline rod 203 move upward simultaneously, compressing the spring between the top of the cable and the support 106. Pulling the cable connector out of the groove allows it to be installed with the connector at the bottom of the capacitor 103, at which point the spring is compressed again. After installation, the cable is automatically pulled back into the support 106 by the spring's tension. The spring returns to its original position after the fixing sleeve 102 moves downward. It is important to note that the cable connector and the capacitor 103 connector are equipped with locking structures to prevent accidental disengagement. This is a well-established and mature structure, and will not be described in detail here.

[0049] When capacitor 103 is installed into fixed sleeve 102, instability such as wobbling may occur when fixed sleeve 102 moves up and down. It is necessary to pre-fix capacitor 103. The following is a structure for pre-fixing capacitor 103: Specifically, a planar groove 204 corresponding to the mounting groove 105 is opened on the outer wall of fixed sleeve 102. The planar groove 204 and the mounting groove 105 are positioned correspondingly. The pre-fixing component includes a limiting claw 205 rotatably connected to the planar groove 204. The bottom of the limiting claw 205 and the planar groove 204 are connected by a spring. The spring is in a compressed state. The top of the limiting claw 205 has an inclined surface. When the positioning boss 104 moves downward in the mounting groove 105, it will contact the inclined surface at the top of the limiting claw 205, causing the limiting claw 205 to open to one side. At this time, the positioning boss 104 can move to the bottom of the mounting groove 105. The reset limiting claw 205 restricts the positioning boss 104. The bottom of the outer wall of the capacitor 103 is connected to a ring plate 206, and a sealing ring is connected to the bottom of the ring plate 206. When the fixing sleeve 102 moves to the bottom, the ring plate 206 will come into contact with the top of the box 101, and the sealing ring will be compressed, which can prevent rainwater from entering the box 101.

[0050] When the fixing sleeve 102 moves to the bottom, a structure is needed to automatically and stably clamp the capacitor 103 to improve stability during use. Simultaneously, it should automatically open when moving upwards to facilitate disassembly and maintenance of the capacitor 103. The following provides an automatic clamping and opening structure: Specifically, the fixing sleeve 102 has circumferentially distributed cavities inside. The clamping assembly includes grippers 207 rotatably connected within the cavities. (Refer to...) Figure 4 The gripper 207 is bent, with the bend serving as a rotation axis. A roller that mates with a conical surface is rotatably connected to the bottom of the gripper 207. When the fixing sleeve 102 moves downwards, the roller contacts the conical surface, causing the gripper 207 to rotate. The bottom of the gripper 207 rotates outwards, while the top rotates towards the axis of the fixing sleeve 102, thus clamping and fixing the capacitor 103. A spring connects the bottom of the gripper 207 to the cavity. The spring is compressed; when no force is applied, the top of the gripper 207 is open. A pad is connected to the top of the gripper 207, contacting the outer wall of the capacitor 103. This pad serves as a liner to prevent damage to the outer wall of the capacitor 103. When the fixed sleeve 102 moves to the bottom, the bottom of the gripper 207 contacts the conical surface, thereby fixing the capacitor 103. When it moves upward, the bottom of the gripper 207 will disengage from the conical surface, thereby opening the gripper 207, which has an automatic opening and closing function.

[0051] After fixing the capacitor 103 on the housing 101, the terminal 107 of the capacitor 103 needs to be connected to the power supply wire 111 for power supply. The following provides a structure for connecting and fixing the power supply wire 111 and the terminal 107: Specifically, a first hydraulic cylinder 301 is connected between the upper housing 108 and the movable housing 112. The first hydraulic cylinder 301 is externally connected to a liquid supply device, and its extension and retraction are controlled by the external hydraulic equipment. The connecting assembly includes a movable frame 302 slidably connected within the movable housing 112. Both ends of the movable housing 112 and the movable frame 302 are slidably connected to the conductive rod 109. The movable housing 112 is fitted over the movable frame 302. A clamping piece 303 is rotatably connected inside the movable frame 302 to the terminal 107. The symmetrical clamping pieces 303 are used to hold the terminal 107, thereby enabling connection. The clamping piece 303 and the movable frame 302 are connected by a spring, which pushes the clamping piece 303 to hold the terminal 107. The end of the clamping piece 303 is provided with an arc surface, and an unlocking component for fixing the movable frame 302 is connected to the movable housing 112. After the capacitor 103 is installed, the external hydraulic device drives the first hydraulic cylinder 301 to operate. The output end of the first hydraulic cylinder 301 pushes the movable housing 112 to fit over the terminal 107, and the clamping piece 303 inside the movable housing 112 connects with the terminal 107. This serves to connect and fix the terminal 107 and the power supply wire 111.

[0052] In use, the movable frame 302 needs to be connected to the movable housing 112 so that it moves with the movable housing 112. This allows the internal clip 303 to connect with the terminal 107, preventing the movable frame 302 from retracting into the movable housing 112. The following provides a structure for connecting the movable frame 302 and the movable housing 112: Specifically, the movable housing 112 is externally connected to an unlocking housing 401, and an unlocking component is located inside the unlocking housing 401. The structure of the unlocking component is described below. Figure 7The unlocking assembly includes a strip frame 402 slidably connected within the unlocking housing 401. The strip frame 402 and the unlocking housing 401 are connected by a spring. When the spring is compressed, it pushes the strip frame 402 to move to one side. An unlocking plate 403 is connected to the end of the movable frame 302 away from the terminal 107. Symmetrically arranged positioning holes 404 are connected to the outer wall of the unlocking plate 403. The unlocking plate 403 is made of insulating material. Since it is used in a current-carrying environment, it is common knowledge that other non-conductive parts use insulating materials or are coated with insulating coatings, and this will not be elaborated further. A first positioning frame 405 and a second positioning frame 406 are slidably connected to the side wall of the upper housing 108, inserted into the positioning holes 404. A first baffle 407 and a second baffle 408 are connected to the movable frame 302. The first positioning frame 405 and the second positioning frame 406 have mutually cooperating inclined surfaces on the side facing the first baffle 407 and the second baffle 408. (Refer to...) Figure 7 When the first positioning frame 405 or the second positioning frame 406 moves toward the unlocking plate 403, it will come into contact with the first baffle 407 and the second baffle 408 on the strip frame 402. Through the contact between the inclined surfaces, the strip frame 402 will move toward the side closer to the spring, and the spring on one side of the strip frame 402 will be compressed. The second positioning frame 406 has a fixing groove 409 for inserting the second baffle 408, and one side of the second baffle 408 has a protrusion for inserting into the fixing groove 409. When the second baffle 408 is inserted into the fixing groove 409, it will restrict the movement of the second positioning frame 406.

[0053] The second positioning frame 406 and the movable housing 112 are connected by a spring, which is in a compressed state. The first positioning frame 405 and the movable housing 112 are also connected by a spring, which is in a compressed state.

[0054] When capacitor 103 is detected to be damaged, the power supply wire 111 remains connected to capacitor 103. After capacitor 103 breaks down, high voltage will directly surge into the housing 101, causing secondary equipment to burn out, or even energizing the housing 101 and causing an electric shock. The following provides a structure that can promptly disconnect from capacitor 103 upon detection of damage: Specifically, the first baffle 407 and the second baffle 408 are both connected to the movable housing 112 via springs. When the springs are compressed, and the first baffle 407 and the second baffle 408 are not under force, they will move away from the unlocking plate 403 due to the spring action, meaning they are not inserted into the positioning hole 404. An electromagnet 410 is connected to the movable housing 112, and a permanent magnet cooperating with the electromagnet 410 is connected to the first baffle 407. When the electromagnet 410 is energized, the first positioning bracket 405 moves towards the unlocking plate 403, thereby inserting into the positioning hole 404.

[0055] A top rod 411 is connected to the top of the upper housing 108, and the unlocking plate 403 is connected to the housing by a spring, which is in a stretched state.

[0056] refer to Figure 7 , Figure 7 The top diagram shows the initial state of the unlocking component. The second positioning bracket 406 passes through the movable housing 112 and is inserted into the positioning hole 404 of the unlocking plate 403, fixing the movable bracket 302 inside the movable housing 112. The movable bracket 302 will move with the movable housing 112.

[0057] When energized, the electromagnet 410 causes the first positioning bracket 405 to move towards the unlocking plate 403 and insert into the positioning hole 404. At this time, the first positioning bracket 405 contacts the first baffle 407 via the inclined surface, causing the strip bracket 402 to move towards the side closer to the spring. Simultaneously, the protrusion at one end of the second baffle 408 is pulled out of the fixing groove 409 of the second positioning bracket 406. (Refer to...) Figure 7 The bottom diagram shows that the second positioning frame 406 will be pulled out from the positioning hole 404 after it is no longer restricted by the second baffle 408. Originally, the connection between the movable frame 302 and the movable housing 112 was fixed as the second positioning frame 406, but after power is applied, it is transformed into the first positioning frame 405.

[0058] When capacitor 103 is detected to be damaged, electromagnet 410 loses power, the first positioning bracket 405 resets and is pulled out of positioning hole 404. At this time, neither the first positioning bracket 405 nor the second positioning bracket 406 is inserted into positioning hole 404. Unlocking plate 403 loses its restraining structure. Since the spring between unlocking plate 403 and upper housing 108 is in a stretched state, it will pull moving bracket 302 towards one end of the spring. At this time, clamp 303 will disengage from terminal 107, completing the disconnection of the conductive circuit. This prevents fault current and high voltage from continuing to be conducted to other parts of the circuit due to the damage to capacitor 103, thus protecting the circuit.

[0059] The pole-mounted circuit breaker is equipped with a detection device connected to capacitor 103 to detect its status. The electromagnet 410 inside the unlocking housing 401 is electrically connected to the detection device. When the detection device detects damage to capacitor 103, it stops supplying power to the electromagnet 410. The installation of detection devices and emergency batteries inside pole-mounted circuit breakers is a well-established and mature design, and will not be elaborated upon further here.

[0060] After the unlocking component is activated, it needs to be reset for subsequent use. The following is a reset structure: a first inclined panel 412 is connected inside the upper housing 108, and a second inclined panel 413, which cooperates with the first inclined panel 412, is connected to one side of the second baffle 408. (Reference) Figure 6 , Figure 6 The top image shows a schematic diagram with the first hydraulic cylinder 301 extending, the movable frame 302 and the movable housing 112 connected together, and the clamping piece 303 clamping onto the terminal 107.

[0061] Figure 6 The central image shows a diagram of the first positioning bracket 405 and the second positioning bracket 406 inserted into the positioning hole 404, indicating that capacitor 103 has been damaged. Because the movable bracket 302 loses its connection to the movable housing 112, it is pulled by the spring between the unlocking plate 403 and the upper housing 108, thus disengaging from the terminal 107 and breaking the connection between the clamp 303 and the terminal 107. This effectively disconnects capacitor 103 from the power supply wire 111 when capacitor 103 is damaged, protecting the equipment's safety without disrupting its fixed state.

[0062] Figure 6 The bottom image shows a schematic diagram of the movement of the movable housing 112 during reset. The first hydraulic cylinder 301 retracts, and the unlocking plate 403 and the movable frame 302 are blocked by the push rod 411, maintaining their positions. The unlocking housing 401 and its internal unlocking components move with the movable housing 112. When it reaches the position of the second inclined panel 413, the hole on the movable housing 112 aligns with the positioning hole 404 of the unlocking plate 403, and the second inclined panel 413 contacts the first inclined panel 412. Through the contact between the inclined surfaces of the first and second inclined panels 412, the second positioning frame 406 is pressed against the unlocking plate 403, causing it to insert into the positioning hole 404. During movement, it contacts the second baffle 408, causing the strip frame 402 to move, thus completing the reset action of the unlocking component. The actions after reset are shown in the reference diagram. Figure 7 The top image in the text.

[0063] It should be noted that the outer wall of the unlocking housing 401 has openings and slots to facilitate the second inclined panel 413 to extend into the unlocking housing 401 and contact the first inclined panel 412. The upper housing 108 has a protective structure on its exterior to protect the unlocking housing 401 and improve its protective capability during fixing.

[0064] When installing and fixing capacitor 103, a power supply is lacking to drive the rotating sleeve 201 and the first hydraulic cylinder 301. The following provides a structure that does not require force to drive the first hydraulic cylinder 301 and the rotating sleeve 201: Specifically, a rotating rod 501 is rotatably connected inside the housing 101. The rotating rod 501 and the rotating sleeve 201 are connected via a gear transmission structure 502, which consists of a worm gear and a worm. The rotating rod 501 drives the rotating sleeve 201 to rotate via the gear transmission structure 502. One end of the rotating rod 501 is connected to a handle 503 located outside the housing 101. The handle 503 facilitates gripping by the user or rotation using tools. A second hydraulic cylinder 504 is provided at the end of the rotating rod 501 away from the handle 503. The second hydraulic cylinder 504 is connected to the first hydraulic cylinder 301. The end of the rotating rod 501 away from the handle 503 is provided with a threaded portion. The piston of the second hydraulic cylinder 504 is connected to a threaded sleeve 505 that is threadedly connected to the rotating rod 501. A support frame is connected to the support base 106, and the threaded sleeve 505 is slidably connected to the support frame. When the rotating rod 501 rotates, it drives the rotating sleeve 201 to rotate, and the rotating rotating sleeve 201 drives the fixed sleeve 102 to move up and down. At the same time, one end, through the threaded connection with the threaded sleeve 505, drives the piston to move within the second hydraulic cylinder 504. Hydraulic oil moves back and forth between the second hydraulic cylinder 504 and the first hydraulic cylinder 301, thereby controlling the operation of the first hydraulic cylinder 301.

[0065] When using a pole-mounted circuit breaker, a limiting structure is set up to prevent the handle 503 from being rotated accidentally, thereby improving the stability during use. The limiting structure is usually a mechanical lock and limit. After the capacitor 103 is fixed, the rotating rod 501 will be fixed, such as by a positioning pin. This is an existing and mature structure, and will not be described in detail here.

[0066] Since it is used outdoors, the connection between the power supply wire 111 and the terminal 107 is easily affected by rain and other factors. Therefore, a rainproof structure adapted to the power supply wire 111 is provided below: Specifically, a rainproof cover is connected to the top of the capacitor 103, the rainproof cover including an upper cover 113 and a lower cover 114, as shown in the reference. Figure 8 The top of the lower cover 114 is provided with a strip-shaped baffle, the top of which contacts the bottom of the power supply wire 111. The upper cover 113 is provided with a corresponding notch. The upper cover 113 and the lower cover 114 are connected by a snap fastener. The bottom of the lower cover 114 is provided with a rainproof cone surface 115 to guide rainwater downwards and prevent it from entering the connection between the rainproof cover and the capacitor 103.

[0067] A method of using a pole-mounted circuit breaker fixing device, comprising the following steps:

[0068] S1. Pre-fixing: Rotate the rotating rod 501, and the rotating lifting component causes the fixing sleeve 102 to extend out of the housing 101. The capacitor 103 is installed into the mounting groove 105 through the positioning boss 104. The pre-fixing component limits and fixes the positioning boss 104.

[0069] S2. Power connection: Install the upper housing 108 on top of the capacitor 103, put the lower cover 114 on top of the capacitor 103, connect the upper housing 108 and the circuit breaker 110 together with the power supply wire 111, and install the upper cover 113 on top of the lower cover 114.

[0070] S3, Fixing: Reverse rotation rod 501, lifting component causes fixing sleeve 102 to retract into housing 101, clamping component in fixing sleeve 102 fixes capacitor 103, second hydraulic cylinder 504 actuates, causing first hydraulic cylinder 301 in upper housing 108 to extend, extension end pushes moving frame 302 downward, clamping piece 303 in moving frame 302 will contact terminal 107, connecting and fixing terminal;

[0071] S4. Usage: After the circuit breaker 110 is connected, the current enters the capacitor 103 through the power taking wire 111 and the clip 303, and the capacitor 103 supplies power to the electrical equipment.

[0072] S5. Damage: After the detection device inside the pole-mounted circuit breaker detects that capacitor 103 is damaged, the electromagnet 410 inside the unlock housing 401 is de-energized, and the moving frame 302 is pulled by the spring inside the upper housing 108, thereby retracting into the moving housing 112, disconnecting the connection of terminal 107, which has the function of blocking the connection between the power supply wire 111 and capacitor 103, and improving the stability after capacitor 103 is damaged.

[0073] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A pole-mounted circuit breaker fixing device, comprising a housing (101), characterized in that: Lifting components are provided inside both sides of the housing (101). A fixed sleeve (102) is slidably connected inside the lifting components. A capacitor (103) is placed on the top of the fixed sleeve (102). Positioning bosses (104) are connected to both sides of the outer wall of the capacitor (103). Mounting grooves (105) that cooperate with the positioning bosses (104) are opened on both sides of the fixed sleeve (102). A pre-fixing component is provided on one side of the mounting groove (105). The pre-fixing component plays a role in pre-fixing the capacitor (103) to prevent the capacitor (103) from falling off. A clamping component that fixes the outer wall of the capacitor (103) is provided inside the fixed sleeve (102). A support base (106) located below the fixed sleeve (102) is connected inside the housing (101). A conical surface that cooperates with the clamping component is provided on the top of the support base (106). The capacitor (103) is connected to a terminal (107) at its top. The capacitor (103) is connected to an upper housing (108) at its top. A conductive rod (109) is connected inside the upper housing (108). A movable housing (112) and a connecting assembly are slidably connected to the outer wall of the conductive rod (109). The connecting assembly cooperates with the terminal (107). A circuit breaker (110) is connected to the top of the housing (101). A power-taking wire (111) is connected between the circuit breaker (110) and the conductive rod (109). The fixed sleeve (102) has circumferentially distributed cavities inside. The clamping assembly includes a jaw (207) rotatably connected to the cavity. The bottom of the jaw (207) is rotatably connected to a roller that matches the conical surface. The bottom of the jaw (207) and the cavity are connected by a spring. The top of the jaw (207) is connected to a pad that contacts the outer wall of the capacitor (103). A first hydraulic cylinder (301) is connected between the upper housing (108) and the movable housing (112). The first hydraulic cylinder (301) is externally connected to a liquid supply device. The connecting assembly includes a movable frame (302) slidably connected inside the movable housing (112). The movable frame (302) is rotatably connected to a clamp (303) that connects to the terminal (107). The clamp (303) and the movable frame (302) are connected by a spring. The end of the clamp (303) is provided with an arc surface. An unlocking assembly for fixing the movable frame (302) is connected to the movable housing (112).

2. The pole-mounted circuit breaker fixing device according to claim 1, characterized in that: The lifting assembly includes a rotating sleeve (201) rotatably connected to the support base (106). The rotating sleeve (201) is externally connected to a rotation drive structure. A spiral sliding groove (202) is provided on the inner wall of the rotating sleeve (201). A fixed sleeve (102) is slidably connected inside the rotating sleeve (201). A sliding pin located in the sliding groove (202) is connected to the outer wall of the fixed sleeve (102). A spline rod (203) extending into the support base (106) is connected to the bottom of the fixed sleeve (102). The spline rod (203) is slidably connected to the support base (106).

3. The pole-mounted circuit breaker fixing device according to claim 1, characterized in that: A first hydraulic cylinder (301) is connected between the upper housing (108) and the movable housing (112). The first hydraulic cylinder (301) is externally connected to a liquid supply device. The connecting assembly includes a movable frame (302) slidably connected inside the movable housing (112). The movable frame (302) is rotatably connected to a clamp (303) that connects to the terminal (107). The clamp (303) and the movable frame (302) are connected by a spring. The end of the clamp (303) is provided with an arc surface. An unlocking assembly for fixing the movable frame (302) is connected to the movable housing (112).

4. The pole-mounted circuit breaker fixing device according to claim 1, characterized in that: The movable housing (112) is externally connected to an unlocking housing (401). The unlocking assembly includes a strip frame (402) slidably connected within the unlocking housing (401). The strip frame (402) and the unlocking housing (401) are connected by a spring. An unlocking plate (403) is connected to the end of the movable frame (302) away from the terminal (107). Symmetrically arranged positioning holes (404) are connected to the outer wall of the unlocking plate (403). The side wall of the upper housing (108) slides... The movable frame (302) is connected to a first positioning frame (405) and a second positioning frame (406) inserted into the positioning hole (404). A first baffle (407) and a second baffle (408) are connected to the movable frame (302). The first positioning frame (405) and the second positioning frame (406) are provided with mutually cooperating inclined surfaces on the side facing the first baffle (407) and the second baffle (408). The second positioning frame (406) is provided with a fixing groove (409) for inserting the second baffle (408).

5. A pole-mounted circuit breaker fixing device according to claim 4, characterized in that: The first baffle (407) and the second baffle (408) are connected to the movable housing (112) by springs. An electromagnet (410) is connected to the movable housing (112). A permanent magnet that cooperates with the electromagnet (410) is connected to the first baffle (407). A top rod (411) is connected to the top of the upper housing (108). The unlocking plate (403) and the housing are connected by springs. A first inclined plate (412) is connected to the upper housing (108). A second inclined plate (413) that cooperates with the first inclined plate (412) is connected to one side of the second baffle (408).

6. The pole-mounted circuit breaker fixing device according to claim 5, characterized in that: A rotating rod (501) is rotatably connected inside the housing (101). The rotating rod (501) and the rotating sleeve (201) are connected by a gear transmission structure (502). One end of the rotating rod (501) is connected to a handle (503) located outside the housing (101). A second hydraulic cylinder (504) is provided at the end of the rotating rod (501) away from the handle (503). The second hydraulic cylinder (504) is connected to the first hydraulic cylinder (301). A threaded part is provided at the end of the rotating rod (501) away from the handle (503). The piston of the second hydraulic cylinder (504) is connected to a threaded sleeve (505) that is threadedly connected to the rotating rod (501). A support frame is connected to the support base (106). The threaded sleeve (505) is slidably connected to the support frame.

7. A pole-mounted circuit breaker fixing device according to claim 6, characterized in that: A rain cover is connected to the top of the capacitor (103). The rain cover includes an upper cover (113) and a lower cover (114). The upper cover (113) and the lower cover (114) are connected by a snap fastener. A rainproof cone surface (115) is provided at the bottom of the lower cover (114).

8. A method of using a pole-mounted circuit breaker fixing device, comprising using a pole-mounted circuit breaker fixing device as described in any one of claims 6 to 7, characterized in that: Includes the following steps: S1. Pre-fixing: Rotate the rotating rod (501) to install the capacitor (103) in the extended fixing sleeve (102), and the pre-fixing component limits and fixes the positioning boss (104); S2, Power connection: Install the upper housing (108) on top of the capacitor (103), and connect the upper housing (108) and the circuit breaker (110) with the power supply wire (111); S3, Fixing: Reverse the rotating rod (501), the fixing sleeve (102) retracts into the box (101), the clamping assembly fixes the capacitor (103), and the clamping piece (303) in the moving frame (302) contacts the terminal (107) to connect and fix the terminal; S4. Use: After the circuit breaker (110) is connected, the current enters the capacitor (103) through the power taking wire (111) and the clip (303), and the capacitor (103) supplies power to the electrical equipment. S5. Damage: After the capacitor (103) is detected to be damaged, the electromagnet (410) inside the unlock housing (401) is de-energized, the moving frame (302) retracts into the moving housing (112), disconnects the terminal (107), and blocks the connection between the power supply wire (111) and the capacitor (103).

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