A safe and controllable pole circuit breaker

Abstract

This invention belongs to the technical field of pole-mounted vacuum circuit breakers, specifically a safe and controllable pole-mounted circuit breaker. It includes a circuit breaker base, a vacuum interrupter column mounted on the base, and terminals mounted on the vacuum interrupter column. A closing / opening handle is located on one side of the circuit breaker base, and an energy storage handle is located on another side. It also includes an automatic protective lubricating component mounted on the circuit breaker base. This invention uses a transmission component and a transmission rack to rotate a protective sleeve to a specified angle that does not interfere with the handle operation, thereby sealing and protecting the closing / opening handle and the energy storage handle. Simultaneously, the transmission rack, through a driven component, drives a lubrication device to expel a certain amount of grease, which lubricates and prevents rust at the connection points between the closing / opening handle, the energy storage handle, and the circuit breaker base. The protective sleeve effectively blocks impurities, and automatic lubrication reduces friction, wear, corrosion, and jamming, extending the service life of the operating mechanism and improving the efficiency of emergency fault handling.

Description

Technical Field

[0001] This invention relates to the field of pole-mounted vacuum circuit breaker technology, specifically a safe and controllable pole-mounted circuit breaker. Background Technology

[0002] As the core switching equipment of overhead lines in urban and rural power distribution networks, pole-mounted vacuum circuit breakers undertake the key functions of rapid fault isolation, flexible load switching, and line protection. The timeliness and reliability of their operation response directly determine the continuity of power supply and the safety of electricity use. Due to long-term outdoor operation, the equipment must continuously withstand harsh conditions such as wind and sand erosion, rain scouring, and drastic temperature changes. Among them, the rotating connection between the operating handle and the box is the only moving part directly exposed to the external environment and is the most frequent fault point of the entire equipment, which directly affects the efficiency of emergency fault handling and operation and maintenance safety.

[0003] Currently, patent publication number CN214898238U discloses a permanent magnet pole-mounted vacuum circuit breaker. By setting an auxiliary slide bar and slider mechanism, it solves the problem of the switch handle being difficult to turn after rusting. However, this solution can only provide emergency auxiliary operation after the handle is rusted and cannot prevent the occurrence of shaft rust and jamming from the root cause. Patent publication number CN216624093U discloses a novel pole-mounted vacuum circuit breaker with a tripping buffer device. The pole-mounted vacuum circuit breaker with the tripping buffer device includes: a vacuum circuit breaker housing, a driving flat steel slidably connected between the interior and exterior of the vacuum circuit breaker housing, and a mounting bracket fixedly connected to the inner top surface of the vacuum circuit breaker housing. This patent optimizes the tripping buffer effect by cooperating with the internal oil cup and the shock-absorbing pad, but it cannot effectively protect the external operating mechanism. The operating handle of existing pole-mounted circuit breakers is directly exposed to the external environment. Impurities easily accumulate in the gap between the handle shaft and the circuit breaker. During the rotation of the operating handle and the vibration of the equipment during opening and closing, impurities will aggravate the friction and wear of the mating surfaces, causing scratches and damage to the surface of the handle shaft, which in turn leads to corrosion and jamming. This not only significantly increases the operating resistance of the insulating rod, but in severe cases, it may become impossible to pull or close the circuit breaker, affecting the efficiency of emergency fault handling, but also shortens the service life of the operating mechanism.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0005] To address the above problems, the present invention provides the following technical solution: A safe and controllable pole-mounted circuit breaker includes a circuit breaker base, a vacuum interrupter column disposed on the circuit breaker base, a terminal block disposed on the vacuum interrupter column, a closing / opening handle disposed on one side of the circuit breaker base, and an energy storage handle disposed on one side of the circuit breaker base, and further includes: Automatic protective lubrication components are installed on the circuit breaker base to improve overall safety protection performance; The automatic protective lubrication component includes a fixed sleeve fixedly connected to one side of the circuit breaker base. A transmission rack is movably connected inside the fixed sleeve via a bearing. A protective sleeve is fixedly connected to the transmission rack. The protective sleeve is fitted onto the opening and closing handle and the energy storage handle. A lubrication device is provided on one side of the circuit breaker base. A driven drive component connected to the transmission rack is provided on the lubrication device. A transmission component is provided inside the fixed sleeve. A rotating applicator, located at the bottom of the circuit breaker base, is used to improve the lubrication effect of the lubrication device.

[0006] Furthermore, the lubrication device includes a lubrication cylinder disposed on one side of the circuit breaker seat. The lubrication cylinder is fixedly installed on one side of the circuit breaker seat by clamps and bolts. A top cover is threaded onto the lubrication cylinder. A spring is fixedly connected inside the top cover. A piston is fixedly connected to the bottom of the spring. The surface of the piston is in contact with the inner wall of the lubrication cylinder. Two air holes are opened at the top of the top cover. A three-way valve pipe assembly is connected to the bottom of the lubrication cylinder.

[0007] Furthermore, the driven component includes three V-shaped grooves formed at the bottom of the transmission rack, an arc-shaped plate is provided on the top of the top cover, one side of the arc-shaped plate is in contact with the surface of the transmission rack, three slide rods are fixedly connected to the arc-shaped plate, the three slide rods are slidably connected inside the three V-shaped grooves respectively, a concave toothed plate is fixedly connected to the bottom of the arc-shaped plate, and a driven toothed ring that meshes with the concave toothed plate is fixedly connected to the three-way valve pipe assembly.

[0008] Furthermore, four guide rods are symmetrically fixedly connected to the lubrication cylinder, the concave toothed plate is sleeved on the guide rods, a positioning plate is fixedly connected to the bottom of the lubrication cylinder, one side of the positioning plate is fixedly connected to the three-way valve pipe assembly, and the bottom of the concave toothed plate is in contact with the top of the positioning plate.

[0009] Furthermore, the transmission component includes a motor fixedly connected inside the fixed sleeve, a reducer fixedly connected to one end of the motor output shaft, a screw fixedly connected to the output end of the reducer, a toothed sleeve threadedly connected to the screw, and one side of the toothed sleeve meshing with a transmission gear.

[0010] Furthermore, a rubber sleeve is fixedly connected to one side of the circuit breaker base, one side of the rubber sleeve is in contact with the protective sleeve, and an arc-shaped groove is provided on the rubber sleeve, one side of the transmission gear is in contact with the inner wall of the arc-shaped groove.

[0011] Furthermore, the rotating applicator includes a rotating rod fixedly connected to the other end of the motor output shaft. Two commutators are provided on the rotating rod. A bevel gear rod is fixedly connected to the output end of the commutator. Two bevel gear rings are movably connected to one side of the circuit breaker seat via bearings. A brush plate located at the bottom of the three-way valve pipe assembly is fixedly connected to one side of the bevel gear ring. The top end of the bevel gear rod extends into the interior of the protective sleeve and meshes with the bevel gear ring. The two brush plates respectively contact the opening / closing handle and the energy storage handle.

[0012] Furthermore, a first sleeve plate is fixedly connected to one side of the circuit breaker base, and the first sleeve plate is fitted onto the transmission gear. Two second sleeve plates are fixedly connected to one side of the circuit breaker base, and the second sleeve plates are fitted onto the bevel gear.

[0013] Furthermore, a pad is fixedly connected to one side of the gear sleeve, and one side of the pad contacts the inner wall of the fixed sleeve. A sealing ring one is fixedly connected to one side of the fixed sleeve, and the inner wall of the sealing ring one contacts the surface of the transmission gear. A sealing ring two is fixedly connected to one side of the fixed sleeve, and the inner wall of the sealing ring two contacts the surface of the rotating rod.

[0014] Furthermore, the protective sleeve is equipped with an automatic supplementary lighting component, which includes three miniature LED lights fixedly connected inside the protective sleeve. A push-button switch is fixedly connected to the bottom of the inner wall of the protective sleeve, and a semi-circular plate is fixedly connected to the push-button switch. One side of the semi-circular plate is in contact with the surface of the circuit breaker base.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the protective sleeve is rotated to a specified angle that does not interfere with the operation of the handle by the transmission component and the transmission rack, thereby sealing and protecting the opening and closing handle and the energy storage handle. At the same time, the transmission rack drives the lubrication device through the driven drive component to squeeze out a certain amount of grease, so that the grease lubricates and prevents rust at the connection between the opening and closing handle and the energy storage handle and the circuit breaker seat. The protective sleeve can effectively block impurities, automatically lubricate to reduce friction, wear and corrosion, improve the smoothness of the operation of the insulating pull rod, extend the service life of the operating mechanism, and improve the efficiency of handling emergency faults. 2. In this invention, the grease discharged from the three-way valve assembly relies solely on gravity to drip, resulting in uneven distribution and an inability to fully cover the rotating mating surfaces of the opening / closing handle and the energy storage handle with the circuit breaker base, thus limiting the lubrication and rust prevention effect. However, through the coordinated use of structures such as the rotating rod, commutator, and bevel gear ring in the rotating applicator, the motor output shaft drives the rotating rod to rotate, and the rotating rod drives the bevel gear rod to rotate through the commutator. The bevel gear rod meshes with the bevel gear ring, causing the brush plates to rotate synchronously. The two brush plates contact the opening / closing handle and the energy storage handle respectively, evenly applying the grease squeezed out by the three-way valve assembly to the connection points between the two and the circuit breaker base, ensuring no dead corners in lubrication, improving the rust prevention effect, and reducing localized wear.

[0016] 3. In this invention, when the protective cover is rotated to the open state, it easily blocks the light in the operating area. Moreover, at night or on cloudy days when there is insufficient light, it is difficult for the operator to align the insulating pull rod with the operating part. However, through the structural design of the miniature LED lights, push-button switch, and semi-circular plate in the automatic supplementary lighting component, when the protective cover is rotated open, the semi-circular plate disengages from the surface of the circuit breaker base, the push-button switch pops up to connect the circuit, and the three miniature LED lights automatically light up, illuminating the operating areas of the opening and closing handle and the energy storage handle. When the protective cover is rotated closed, the semi-circular plate is squeezed, the push-button switch is disconnected, and the miniature LED lights automatically turn off. No additional manual control is required, which is convenient for operation in low-light environments and improves the accuracy and safety of operation. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings; Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the fixing sleeve in this invention; Figure 3 This is a cross-sectional schematic diagram of the fixing sleeve in this invention; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 5 This is a cross-sectional schematic diagram of the lubrication cylinder in this invention; Figure 6 This is a schematic diagram of the bevel gear ring in this invention; Figure 7 This is a schematic diagram of the protective sleeve in this invention; Figure 8 This is a schematic diagram of the transmission rack in this invention; Figure 9 This is a cross-sectional schematic diagram of the rubber sleeve in this invention; Figure 10 This is a schematic diagram of the structure of the protective sleeve after rotation in this invention.

[0018] Reference numerals: 1. Circuit breaker base; 2. Vacuum interrupter column; 3. Terminal block; 4. Opening / closing handle; 5. Energy storage handle; 6. Automatic protective lubrication component; 61. Fixing sleeve; 62. Transmission rack; 63. Protective sleeve; 64. Lubrication device; 641. Lubrication cylinder; 642. Top cover; 643. Spring; 644. Piston; 645. Air hole; 646. Three-way valve pipe assembly; 65. Driven component; 651. V-groove; 652. Arc plate; 653. Slide rod; 654. Concave toothed plate; 655. Driven tooth 66. Ring; 66. Transmission component; 661. Motor; 662. Reducer; 663. Screw; 664. Gear sleeve; 7. Rotary coating component; 71. Rotating rod; 72. Commutator; 73. Bevel gear rod; 74. Bevel gear ring; 75. Brush plate; 8. Guide rod; 9. Positioning plate; 10. Rubber sleeve; 11. Arc groove; 12. Sleeve plate one; 13. Sleeve plate two; 14. Pad plate; 15. Sealing ring one; 16. Sealing ring two; 17. Automatic fill light component; 171. Miniature LED light; 172. Push button switch; 173. Semicircular plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 4 As shown, the present invention provides a safe and controllable pole-mounted circuit breaker, including a circuit breaker base 1, a vacuum interrupter column 2 disposed on the circuit breaker base 1, a terminal block 3 disposed on the vacuum interrupter column 2, a closing / opening handle 4 disposed on one side of the circuit breaker base 1, an energy storage handle 5 disposed on one side of the circuit breaker base 1, and further comprising: Automatic protective lubrication component 6 is installed on the circuit breaker base 1 to improve the overall safety protection performance; The automatic protective lubrication component 6 includes a fixed sleeve 61 fixedly connected to one side of the circuit breaker base 1. A transmission rack 62 is movably connected inside the fixed sleeve 61 via a bearing. A protective sleeve 63 is fixedly connected to the transmission rack 62. The protective sleeve 63 is fitted onto the opening and closing handle 4 and the energy storage handle 5. A lubrication device 64 is provided on one side of the circuit breaker base 1. A driven drive component 65 connected to the transmission rack 62 is provided on the lubrication device 64. A transmission component 66 is provided inside the fixed sleeve 61. The rotating applicator 7 is located at the bottom of the circuit breaker base 1 and is used to improve the lubrication effect of the lubrication device 64. Specifically, the circuit breaker base 1 adopts an integrated box structure welded from stainless steel, internally integrating a mature spring operating mechanism, a vacuum interrupter mounting base, and a grounding conductive circuit. A current transformer is installed on one side of the vacuum interrupter column 2. Both the circuit breaker base 1 and the vacuum interrupter column 2 utilize mature technologies. The opening and closing handle 4 and the energy storage handle 5 are both composed of a handle and a rotating shaft. One end of the transmission rack 62 is located inside the fixed sleeve 61, and the other end is located outside the fixed sleeve 61. The automatic protective lubrication component 6 can be driven by the transmission component 66. The rotation of the rack 62 drives the protective sleeve 63 to precisely rotate to the sealing position, completely enclosing the opening and closing handle 4 and the energy storage handle 5, preventing wind, sand, rain, and debris from entering the connection. At the same time, the driven component 65 triggers the lubrication device 64 to work, achieving synchronized action of protection and lubrication, preventing the shaft from rusting and jamming at the source. Moreover, after the protective sleeve 63 is opened, since the operator is located diagonally below the circuit breaker base 1 and operates through the insulated pull rod, the protective sleeve 63 and other transmission components will not affect the operation or the line of sight.

[0021] like Figures 3 to 5 As shown, the lubrication device 64 includes a lubrication cylinder 641 disposed on one side of the circuit breaker base 1. The lubrication cylinder 641 is fixedly installed on one side of the circuit breaker base 1 by clamps and bolts. A top cover 642 is threaded onto the lubrication cylinder 641. A spring 643 is fixedly connected inside the top cover 642. A piston 644 is fixedly connected to the bottom of the spring 643. The surface of the piston 644 is in contact with the inner wall of the lubrication cylinder 641. Two air holes 645 are opened on the top of the top cover 642. A three-way valve pipe assembly 646 is connected to the bottom of the lubrication cylinder 641.

[0022] Specifically, the lubrication cylinder 641 is filled with special grease, and the piston 644 consists of a disc and a rubber ring. The rubber ring contacts the inner wall of the lubrication cylinder 641, and the contact area between the rubber ring and the lubrication cylinder 641 is large, preventing deflection and ensuring the vertical movement of the piston 644. The piston 644 is automatically oiled by being pushed by the spring 643. The threaded connection design of the top cover 642 facilitates the replenishment of grease later. The air hole 645 on the top ensures that the piston 644 moves up and down smoothly without jamming. The three-way valve pipe assembly 646 can simultaneously deliver grease to the two connection points of the opening and closing handle 4 and the energy storage handle 5, realizing dual-point lubrication in one action and improving lubrication efficiency.

[0023] like Figures 5 to 8As shown, the driven drive component 65 includes three V-shaped grooves 651 formed at the bottom of the transmission rack 62. An arc-shaped plate 652 is provided on the top of the top cover 642. One side of the arc-shaped plate 652 is in contact with the surface of the transmission rack 62. Three sliding rods 653 are fixedly connected to the arc-shaped plate 652. The three sliding rods 653 are slidably connected to the interior of the three V-shaped grooves 651 respectively. A concave toothed plate 654 is fixedly connected to the bottom of the arc-shaped plate 652. A driven toothed ring 655 that meshes with the concave toothed plate 654 is fixedly connected to the three-way valve pipe assembly 646.

[0024] Specifically, the three-way valve assembly 646 consists of a three-way pipe and two miniature ball valves. The driven gear ring 655 is fixedly connected to the valve stem of the miniature ball valve. The forward and reverse rotation of the driven gear ring 655 can drive the miniature ball valve to open and close. The driven drive component 65 is triggered by the rotational power of the transmission rack 62. The V-groove 651 is composed of a first inclined groove and a second inclined groove. When the transmission rack 62 rotates, it can push the slide rod 653 to move linearly away from the fixed sleeve 61 through the first inclined groove, while the second inclined groove can push the slide rod 653 to move linearly away from the fixed sleeve 61. 53 moves linearly towards the side closer to the fixed sleeve 61. The slide rod 653 drives the driven gear ring 655 to rotate alternately in the forward and reverse directions through the arc plate 652 and the concave toothed plate 654, thereby driving the three-way valve pipe assembly 646 to open and then close the oil outlet. After the oil outlet is completely closed, during the same mechanical stroke of opening and closing the oil outlet, the transmission rack 62 synchronously drives the protective sleeve 63 to rotate to the specified opening angle. Moreover, the design of the three V-grooves 651 and the slide rod 653 ensures that the lubrication device 64 supplies oil synchronously when the protective sleeve 63 is opened and closed.

[0025] like Figures 2 to 5 As shown, four guide rods 8 are symmetrically fixedly connected to the lubrication cylinder 641, and a concave toothed plate 654 is sleeved on the guide rods 8. A positioning plate 9 is fixedly connected to the bottom of the lubrication cylinder 641. One side of the positioning plate 9 is fixedly connected to the three-way valve pipe assembly 646, and the bottom of the concave toothed plate 654 is in contact with the top of the positioning plate 9.

[0026] Specifically, the four guide rods 8 can limit the movement trajectory of the concave toothed plate 654, ensuring that it moves smoothly along a straight line and avoiding deviation that could lead to failure of engagement with the driven toothed ring 655. The positioning plate 9 can provide stable support for the three-way valve pipe assembly 646, preventing it from shaking during transmission. At the same time, it provides bottom limit for the concave toothed plate 654. Combined with the fixed axial travel of the V-groove 651, it limits the maximum opening time of the three-way valve pipe assembly 646, thereby ensuring that the oil output is maintained within a certain range each time.

[0027] like Figures 1 to 3As shown, the transmission component 66 includes a motor 661 fixedly connected inside the fixed sleeve 61. One end of the output shaft of the motor 661 is fixedly connected to a reducer 662. The output end of the reducer 662 is fixedly connected to a screw 663. A toothed sleeve 664 is threaded onto the screw 663. One side of the toothed sleeve 664 meshes with the transmission rack 62.

[0028] Specifically, motor 661 is a dual-shaft high-torque motor 661, and reducer 662 is a worm gear reducer. The bottom of reducer 662 is fixedly connected inside the fixed sleeve 61. Power is provided by motor 661, and after being reduced and amplified by reducer 662, it drives screw 663 to rotate, driving gear sleeve 664 to move smoothly along the axial direction. Then, through the meshing of gear sleeve 664 and transmission rack 62, linear motion is converted into rotational motion. The transmission torque is large and the operation is smooth. The rotation angle of protective sleeve 63 can be precisely controlled to realize automated opening and closing control.

[0029] like Figures 7 to 9 As shown, a rubber sleeve 10 is fixedly connected to one side of the circuit breaker base 1. One side of the rubber sleeve 10 is in contact with the protective sleeve 63. An arc-shaped groove 11 is provided on the rubber sleeve 10. One side of the transmission gear 62 is in contact with the inner wall of the arc-shaped groove 11.

[0030] Specifically, the rubber sleeve 10 can fill the gap between the protective sleeve 63 and the circuit breaker seat 1, further improving the sealing and protection effect and blocking the intrusion of fine dust and moisture. The rubber sleeve 10 can seal the gap between the transmission rack 62 and the circuit breaker seat 1 through the arc groove 11, further improving the sealing effect.

[0031] like Figures 4 to 6 As shown, the rotating applicator 7 includes a rotating rod 71 fixedly connected to the other end of the output shaft of the motor 661. Two commutators 72 are provided on the rotating rod 71. A bevel gear rod 73 is fixedly connected to the output end of the commutator 72. Two bevel gear rings 74 are movably connected to one side of the circuit breaker seat 1 through a bearing. A brush plate 75 located at the bottom of the three-way valve pipe assembly 646 is fixedly connected to one side of the bevel gear ring 74. The top end of the bevel gear rod 73 extends into the interior of the protective sleeve 63 and meshes with the bevel gear ring 74. The two brush plates 75 are in contact with the opening and closing handle 4 and the energy storage handle 5, respectively.

[0032] Specifically, the protective sleeve 63 has two openings at its bottom. The protective sleeve 63 is fitted onto the bevel gear rod 73 through these openings, and when rotating, the protective sleeve 63 can move away from the bevel gear rod 73 through these openings. The commutator 72 is a bevel gear commutator, consisting of a housing, a first bevel gear, and a second bevel gear. The housing is fitted onto the rotating rod 71, and one side of the housing is fixedly connected to the bottom of the circuit breaker base 1 via a connecting plate. The first bevel gear is fixedly connected to the rotating rod 71, and the second bevel gear is movably connected inside the housing via a bearing and meshes with the first bevel gear. The bottom end of the bevel gear rod 73 is fixedly connected to the second bevel gear, and the rotating rod 71 can drive the bevel gear rod 73 to rotate via the first and second bevel gears. Thus, two bevel gear rods 73 are synchronously driven to rotate through two commutators 72; a sealing cover is fixedly connected to one side of the circuit breaker base 1, and a sealing ring is fixedly connected inside the sealing cover, while the bevel gear ring 74 is movably connected to the sealing cover through a bearing; in use, the output shaft of the motor 661 drives the rotating rod 71 to rotate, and the rotating rod 71 drives the bevel gear rod 73 to rotate through the commutator 72. The bevel gear rod 73 meshes with the bevel gear ring 74 to drive the brush plate 75 to rotate synchronously. The two brush plates 75 contact the opening and closing handle 4 and the energy storage handle 5 respectively, and evenly apply the grease squeezed out by the three-way valve pipe assembly 646 to the connection between the two and the circuit breaker base 1, ensuring that there are no dead corners in lubrication, improving the rust prevention effect, and reducing local wear.

[0033] like Figure 1 and Figure 6 As shown, a sleeve plate 12 is fixedly connected to one side of the circuit breaker base 1, and the sleeve plate 12 is sleeved on the transmission gear 62. Two sleeve plates 13 are fixedly connected to one side of the circuit breaker base 1, and the sleeve plates 13 are sleeved on the bevel gear 73.

[0034] Specifically, the first sleeve 12 can provide radial support for the transmission rack 62 to prevent it from shaking and deforming during rotation, ensuring the meshing accuracy between the transmission rack 62 and the gear sleeve 664. The two second sleeves 13 respectively position the two bevel gears 73 to prevent the bevel gears 73 from shaking and causing poor meshing with the bevel gear ring 74, thereby improving the operational stability and service life of the components.

[0035] like Figures 1 to 3 As shown, a pad 14 is fixedly connected to one side of the gear sleeve 664, and one side of the pad 14 is in contact with the inner wall of the fixed sleeve 61. A sealing ring 15 is fixedly connected to one side of the fixed sleeve 61, and the inner wall of the sealing ring 15 is in contact with the surface of the transmission gear 62. A sealing ring 26 is fixedly connected to one side of the fixed sleeve 61, and the inner wall of the sealing ring 26 is in contact with the surface of the rotating rod 71.

[0036] Specifically, the surface of the gear sleeve 664 contacts the inner wall of the fixed sleeve 61, and the pad 14 can guide the gear sleeve 664 through the fixed sleeve 61 to ensure that the gear sleeve 664 moves linearly only along the axial direction of the screw 663. The sealing ring 15 and the sealing ring 16 can seal the gaps between the transmission gear 62 and the rotating rod 71 and the fixed sleeve 61 respectively, preventing dust and rainwater from entering the interior of the fixed sleeve 61 and protecting the motor 661 and transmission components from corrosion.

[0037] like Figure 1 and Figure 7 As shown, the protective sleeve 63 is equipped with an automatic lighting component 17. The automatic lighting component 17 includes three miniature LED lights 171 fixedly connected inside the protective sleeve 63. A push-button switch 172 is fixedly connected to the bottom of the inner wall of the protective sleeve 63. A semi-circular plate 173 is fixedly connected to the push-button switch 172. One side of the semi-circular plate 173 is in contact with the surface of the circuit breaker base 1.

[0038] Specifically, the miniature LED light 171 is a miniature LED light powered by a built-in button battery, and the push-button switch 172 is a waterproof switch. The push-button switch 172 is electrically connected to the three miniature LED lights 171. When the protective cover 63 is rotated open, the semicircular plate 173 is detached from the surface of the circuit breaker base 1, the push-button switch 172 pops up to connect the circuit, and the three miniature LED lights 171 automatically light up, illuminating the operating areas of the opening and closing handle 4 and the energy storage handle 5. When the protective cover 63 is rotated closed, the semicircular plate 173 is squeezed, the push-button switch 172 is disconnected, and the miniature LED lights 171 automatically turn off. No additional manual control is required, which is convenient for operation in low-light environments and improves the accuracy and safety of operation.

[0039] The working principle of this invention is as follows: When in use, the motor 661 is started to rotate forward. The output shaft of the motor 661 drives the screw 663 to rotate via the reducer 662. The screw 663 drives the protective sleeve 63 to rotate and open through the gear sleeve 664 and the transmission gear 62. During the rotation of the transmission gear 62, the first inclined groove of the V-shaped groove 651 pushes the three slide rods 653 to move linearly away from the fixed sleeve 61. The slide rods 653 drive the concave tooth plate 654 to move linearly along the guide rod 8 through the arc plate 652. The concave tooth plate 654 meshes with the driven tooth ring 655 to drive the three-way valve pipe assembly 646 to open. The spring 643 in the lubrication cylinder 641 pushes the piston 644 to move downward, and delivers the grease through the three-way valve pipe assembly 646 to the connection between the opening and closing handle 4 and the energy storage handle 5 and the circuit breaker base 1. At the same time, the other end of the output shaft of motor 661 drives the rotating rod 71 to rotate synchronously. The rotating rod 71 drives the two bevel gear rods 73 to rotate synchronously through two commutators 72. The bevel gear rods 73 drive the brush plate 75 to rotate synchronously through the bevel gear ring 74, so that the squeezed grease is evenly applied to the connection of the two handles. When the slide rod 653 finishes the first inclined groove and enters the second inclined groove, the concave toothed plate 654 drives the driven toothed ring 655 to rotate in the opposite direction, driving the three-way valve pipe assembly 646 to completely close the oil outlet. At the same time, the transmission gear rod 62 drives the protective sleeve 63 to rotate to the maximum open position. The semi-circular plate 173 is separated from the surface of the circuit breaker base 1, the push button switch 172 pops up to connect the circuit, and the three miniature LED lights 171 automatically light up to illuminate the operating area. The operator uses the insulated pull rod to align with the opening / closing handle 4 or the energy storage handle 5 to complete the opening / closing or energy storage operation. After the operation is completed, the starter motor 661 reverses, the transmission rack 62 rotates in the opposite direction, and the second inclined groove of the V-groove 651 pushes the slide rod 653 to move linearly, which drives the three-way valve assembly 646 to open for secondary lubrication. The brush plate 75 rotates in the opposite direction to evenly apply grease again. When the slide rod 653 returns to the first inclined groove of the V-groove 651, the three-way valve assembly 646 is completely closed. The transmission rack 62 drives the protective sleeve 63 to rotate to the sealing position. The protective sleeve 63 presses the semi-circular plate 173 onto the circuit breaker base 1. The push button switch 172 is disconnected, the miniature LED light 171 is automatically turned off, and the equipment returns to normal, thus achieving the effect of automatic protection and lubrication.

[0040] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A safe and controllable pole circuit breaker, comprising a circuit breaker seat (1), a vacuum arc extinguishing column (2) is arranged on the circuit breaker seat (1), a wiring terminal (3) is arranged on the vacuum arc extinguishing column (2), a closing and opening handle (4) is arranged on one side of the circuit breaker seat (1), and an energy storage handle (5) is arranged on one side of the circuit breaker seat (1), characterized in that, Also includes: Automatic protective lubrication component (6) is installed on the circuit breaker base (1) to improve the overall safety protection performance; The automatic protective lubrication component (6) includes a fixed sleeve (61) fixedly connected to one side of the circuit breaker base (1). A transmission rack (62) is movably connected inside the fixed sleeve (61) via a bearing. A protective sleeve (63) is fixedly connected to the transmission rack (62). The protective sleeve (63) is fitted onto the opening and closing handle (4) and the energy storage handle (5). A lubrication device (64) is provided on one side of the circuit breaker base (1). A driven drive component (65) connected to the transmission rack (62) is provided on the lubrication device (64). A transmission component (66) is provided inside the fixed sleeve (61). A rotating applicator (7) is provided at the bottom of the circuit breaker base (1) to improve the lubrication effect of the lubrication device (64).

2. The safe and controllable pole-mounted circuit breaker according to claim 1, characterized in that, The lubrication device (64) includes a lubrication cylinder (641) disposed on one side of the circuit breaker seat (1). The lubrication cylinder (641) is fixedly installed on one side of the circuit breaker seat (1) by clamps and bolts. A top cover (642) is threaded onto the lubrication cylinder (641). A spring (643) is fixedly connected inside the top cover (642). A piston (644) is fixedly connected to the bottom of the spring (643). The surface of the piston (644) is in contact with the inner wall of the lubrication cylinder (641). Two air holes (645) are opened on the top of the top cover (642). A three-way valve pipe assembly (646) is connected to the bottom of the lubrication cylinder (641).

3. A safe and controllable pole-mounted circuit breaker according to claim 2, characterized in that, The driven component (65) includes three V-shaped grooves (651) formed at the bottom of the transmission rack (62). The top of the top cover (642) is provided with an arc plate (652). One side of the arc plate (652) is in contact with the surface of the transmission rack (62). Three slide rods (653) are fixedly connected to the arc plate (652). The three slide rods (653) are slidably connected to the interior of the three V-shaped grooves (651). A concave toothed plate (654) is fixedly connected to the bottom of the arc plate (652). A driven toothed ring (655) that meshes with the concave toothed plate (654) is fixedly connected to the three-way valve pipe assembly (646).

4. A safe and controllable pole-mounted circuit breaker according to claim 3, characterized in that, Four guide rods (8) are symmetrically fixedly connected to the lubrication cylinder (641). The concave toothed plate (654) is sleeved on the guide rods (8). A positioning plate (9) is fixedly connected to the bottom of the lubrication cylinder (641). One side of the positioning plate (9) is fixedly connected to the three-way valve pipe assembly (646). The bottom of the concave toothed plate (654) is in contact with the top of the positioning plate (9).

5. A safe and controllable pole-mounted circuit breaker according to claim 4, characterized in that, The transmission component (66) includes a motor (661) fixedly connected inside the fixed sleeve (61). One end of the output shaft of the motor (661) is fixedly connected to a reducer (662). The output end of the reducer (662) is fixedly connected to a screw (663). A toothed sleeve (664) is threaded onto the screw (663). One side of the toothed sleeve (664) meshes with the transmission rack (62).

6. A safe and controllable pole-mounted circuit breaker according to claim 1, characterized in that, A rubber sleeve (10) is fixedly connected to one side of the circuit breaker base (1). One side of the rubber sleeve (10) is in contact with the protective sleeve (63). An arc groove (11) is provided on the rubber sleeve (10). One side of the transmission rack (62) is in contact with the inner wall of the arc groove (11).

7. A safe and controllable pole-mounted circuit breaker according to claim 2, characterized in that, The rotating applicator (7) includes a rotating rod (71) fixedly connected to the other end of the output shaft of the motor (661). Two commutators (72) are provided on the rotating rod (71). A bevel gear rod (73) is fixedly connected to the output end of the commutator (72). Two bevel gear rings (74) are movably connected to one side of the circuit breaker seat (1) through a bearing. A brush plate (75) located at the bottom of the three-way valve pipe assembly (646) is fixedly connected to one side of the bevel gear ring (74). The top end of the bevel gear rod (73) extends into the interior of the protective sleeve (63) and meshes with the bevel gear ring (74). The two brush plates (75) are in contact with the opening and closing handle (4) and the energy storage handle (5) respectively.

8. A safe and controllable pole-mounted circuit breaker according to claim 7, characterized in that, One side of the circuit breaker base (1) is fixedly connected to a sleeve plate (12), which is sleeved on the transmission gear (62). Two sleeve plates (13) are fixedly connected to one side of the circuit breaker base (1), which are sleeved on the bevel gear (73).

9. A safe and controllable pole-mounted circuit breaker according to claim 5, characterized in that, A pad (14) is fixedly connected to one side of the gear sleeve (664), and one side of the pad (14) is in contact with the inner wall of the fixed sleeve (61). A sealing ring one (15) is fixedly connected to one side of the fixed sleeve (61), and the inner wall of the sealing ring one (15) is in contact with the surface of the transmission gear (62). A sealing ring two (16) is fixedly connected to one side of the fixed sleeve (61), and the inner wall of the sealing ring two (16) is in contact with the surface of the rotating rod (71).

10. A safe and controllable pole-mounted circuit breaker according to claim 8, characterized in that, The protective sleeve (63) is equipped with an automatic lighting component (17), which includes three miniature LED lights (171) fixedly connected inside the protective sleeve (63). A push-button switch (172) is fixedly connected to the bottom of the inner wall of the protective sleeve (63). A semi-circular plate (173) is fixedly connected to the push-button switch (172). One side of the semi-circular plate (173) is in contact with the surface of the circuit breaker base (1).

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