Breaker spring operation mechanism opening and closing speed debugging device

Abstract

The invention belongs to the technical field of breaker testing equipment, and particularly relates to breaker spring operating mechanism opening and closing speed debugging equipment, which comprises a base, a power unit, a closing unit and a ceramic vacuum arc extinguish chamber, and is characterized in that the power unit is fixedly arranged at the side part of the base and is used for debugging the breaker spring operating mechanism opening and closing speed; the closing unit is rotationally arranged in the base and extends to the two ends of the base; and the ceramic vacuum arc-extinguishing chamber is fixedly arranged at the top of the base. By rotating the auxiliary rocker arm along the outer wall of the positioning pin, the rotating radius of the rocker arm pin is changed, that is, the length of a rotating force arm of the rocker arm pin is adjusted, so that the upward moving speed of the track strip is adjusted under the condition that the rotating speed of the gear motor is equal, and the debugging of the opening and closing speed of the circuit breaker is realized.

Description

Technical Field

[0001] This invention belongs to the technical field of circuit breaker testing equipment, specifically a circuit breaker spring operating mechanism opening and closing speed debugging device. Background Technology

[0002] The arc-extinguishing system of a high-voltage circuit breaker is used to extinguish the electric arc generated between the contacts when the circuit is broken. The arc-extinguishing system consists of two parts: a powerful spring operating mechanism that quickly separates the circuit breaker contacts; and an arc-extinguishing chamber located above the contacts. The opening and closing speed of a high-voltage circuit breaker is a crucial characteristic parameter, reflecting the motion characteristics of the operating and transmission mechanisms during the opening and closing process. Exceeding or falling below the specified opening and closing speed will affect the circuit breaker's operating condition and service life. Insufficient closing speed will cause contact chatter and excessive pre-breakdown time; insufficient opening speed will cause excessive arc burning time, leading to contact burnout and rendering the circuit breaker unable to continue operating. In severe cases, it may even cause an explosion. Therefore, the opening and closing speed of a circuit breaker must be adjusted before installation. Summary of the Invention

[0003] The purpose of this invention is to provide a circuit breaker spring operating mechanism opening and closing speed debugging device to solve the problems mentioned in the background art.

[0004] This invention provides the following technical solution: a device for adjusting the opening and closing speed of a circuit breaker spring operating mechanism, comprising: Base; A power unit, which is fixedly installed on the side of the base, is used for adjusting the opening and closing speed of the circuit breaker spring operating mechanism; A closing unit, wherein the closing unit is rotatably disposed inside the base and extends to both ends of the base; A ceramic vacuum interrupter is fixedly mounted on top of the base.

[0005] As a preferred embodiment of the present invention, the power unit includes: The transfer shaft is rotatably mounted inside the base via bearings and extends through both ends of the transfer shaft; The main rocker arm is fixedly installed on the outer wall end of the transfer shaft; A positioning pin is fixedly installed on the side of the main rocker arm away from the base, and the positioning pin is located on the surface of the main rocker arm at the end away from the transfer shaft; A secondary rocker arm, which is rotatably mounted on the outer wall of a locating pin; A circular groove is formed on the side of the secondary rocker arm away from the main rocker arm; A locking clutch plate, which is sleeved around the locating pin; A locking nut, which is sleeved around the locating pin; A rocker arm pin is fixedly installed on the side end of the secondary rocker arm away from the main rocker arm.

[0006] As a preferred embodiment of the present invention, the inner wall of the circular groove is provided with a plurality of torsion limiting teeth one at equal angles, the outer wall of the locking clutch plate is provided with a plurality of torsion limiting teeth two that are adapted to the torsion limiting teeth one at equal angles, the torsion limiting teeth two engage with the torsion limiting teeth one, the outer wall of the positioning pin is provided with a plurality of keyways at equal angles, the inner wall of the locking clutch plate is provided with a plurality of key blocks that are adapted to the keyways at equal angles, and the key blocks are slidably connected to the keyways.

[0007] As a preferred embodiment of the present invention, the outer wall of the positioning pin is provided with threads that match the threads of the locking nut, the threads of the locking nut and the threads are threadedly connected, the side of the locking nut abuts against the side of the locking clutch plate, and the side of the locking clutch plate away from the locking nut abuts against the inner end face of the circular groove.

[0008] As a preferred embodiment of the present invention, a geared motor is fixedly installed inside the base by a fixed bracket, a drive gear is fixedly installed on the output shaft of the geared motor, a driven gear meshes with the periphery of the drive gear, the driven gear is fixedly installed on the outer wall of the transfer shaft, and the gear ratio between the driven gear and the drive gear is 7:6.

[0009] As a preferred embodiment of the present invention, the closing unit includes: A track bar is movably mounted at the end of the base and located at the top of the secondary rocker arm, and the rocker arm pin is slidably mounted in the track groove of the track bar; A guide seat, which is fixedly installed on the top of the track bar; A hinged base, which is fixedly mounted on top of the guide seat; Telescopic sleeve, which is hinged to the top of the hinge base; A telescopic rod, which is slidably mounted inside a telescopic sleeve and extends to the top periphery of the telescopic sleeve; The closing shaft is rotatably mounted inside the base via bearings and extends through to both outer peripheries of the base. The protrusion is fixedly installed on the outer wall of the closing shaft, and the surface of the protrusion abuts against the bottom of the closing shaft at the bottom of the ceramic vacuum interrupter. V-shaped rocker arm, the V-shaped rocker arm is fixedly installed on both ends of the outer wall of the closing shaft; A hinge pin is fixedly installed on the side end of the V-shaped rocker arm away from the base and is hinged to the top of the telescopic rod via a spherical bearing.

[0010] As a preferred embodiment of the present invention, the closing unit further includes: Spring pin one, the spring pin one is fixedly installed on the side of the V-shaped rocker arm away from the base and away from the end of the hinge pin; Spring pin two, the spring pin two is fixedly installed on one side of the base near the V-shaped rocker arm, and is located directly below it; A tension spring is fixedly installed between spring pin one and spring pin two.

[0011] As a preferred embodiment of the present invention, a static magnetic block is fixedly installed on the side of the base near the V-shaped rocker arm by bolts, and a groove is stamped and recessed on the side of the telescopic rod away from the base. A spring is fixedly installed inside the groove, and a moving magnetic block is slidably installed inside the groove. The end of the moving magnetic block is fixedly connected to the end of the groove. A moving magnetic block is provided through the side of the telescopic sleeve facing the locking hole. The moving magnetic block is engaged inside the locking hole, and the moving magnetic block has the opposite magnetism to the static magnetic block.

[0012] As a preferred embodiment of the present invention, a linear groove is provided on the side of the telescopic sleeve away from the locking hole, and the interior of the linear groove is slidably connected to the outer wall of the protruding surface of the sliding groove.

[0013] As a preferred embodiment of the present invention, a linear guide rail is fixedly installed on the side of the base near the guide seat, and a linear slider is slidably installed on the periphery of the linear guide rail. The linear slider is fixedly installed to the side of the guide seat near the base by bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention drives the drive gear to rotate through the output shaft of the geared motor, which in turn drives the transfer shaft to rotate under the transmission action of the driven gear. This, in turn, drives the two main rocker arms, two positioning pins, two auxiliary rocker arms, and two rocker arm pins to rotate together. Since the rocker arm pins are slidably connected to the track grooves of the track bar, the rocker arm pins push the closing unit upward as the auxiliary rocker arms rotate, causing the circuit breaker to open, close, and shut down. The auxiliary rocker arms rotate along the outer wall of the positioning pins, changing the rotation radius of the rocker arm pins. This adjusts the length of the rocker arm pin's rotation drive arm. Therefore, when the speed of the geared motor is constant, the upward movement speed of the track bar can be adjusted, thereby achieving the debugging of the circuit breaker's opening, closing, and shut-down speeds.

[0015] 2. During the rotation of the V-shaped rocker arm, the hinge pin rotates together. Initially, the tension spring is stretched and accumulates elastic force as the V-shaped rocker arm rotates. When the first spring pin passes directly above the closing shaft, the rebound force of the static magnetic block is released as the V-shaped rocker arm rotates. At this time, the tension spring between the first and second spring pins deviates from the center of the closing shaft. Therefore, the closing shaft is locked under the elastic force of the tension spring to prevent the closing shaft and the protrusion from reversing, so that the protrusion always remains facing upward.

[0016] 3. When the closing shaft rod of the present invention is locked, the telescopic sleeve just drives the spring and the moving magnetic block to the position of the stationary magnetic block. The magnetic repulsion of the stationary magnetic block on the moving magnetic block pushes the moving magnetic block to slide into the groove, so that the spring is compressed and stores elastic force. During the process of the moving magnetic block sliding into the groove, it will separate from the locking hole, thereby releasing the lock between the telescopic sleeve and the telescopic rod. At this time, even if the output shaft of the geared motor continues to rotate, it can only push the telescopic sleeve to move upward, and will not move the telescopic rod, that is, it will not continue to apply torque to the closing shaft rod to avoid damage to the components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the base of the present invention; Figure 3 This is a schematic diagram of the power unit of the present invention; Figure 4 This is a schematic diagram of the planar structure of the power unit of the present invention; Figure 5 For the present invention Figure 3 A partial structural diagram; Figure 6 This is a schematic diagram of the structure of the power unit of the present invention in a partially deployed state; Figure 7 This is a partial structural schematic diagram of the main rocker arm of the present invention; Figure 8 This is a schematic diagram of the closing unit of the present invention; Figure 9 This is a side sectional view of the telescopic sleeve of the present invention; Figure 10 For the present invention Figure 9 A magnified structural diagram of point A in the middle.

[0018] In the diagram: 100, base; 200, power unit; 201, transfer shaft; 202, main rocker arm; 203, positioning pin; 204, auxiliary rocker arm; 205, circular groove; 206, locking clutch plate; 207, locking nut; 208, rocker arm pin; 209, torque limiting tooth one; 2010, torque limiting tooth two; 2011, thread; 2012, keyway; 2013, key block; 2014, geared motor; 2015, drive gear; 2016, driven gear; 300, closing unit; 301, track bar; 3 02. Guide seat; 303. Hinge base; 304. Telescopic sleeve; 305. Telescopic rod; 306. Closing shaft; 307. Protrusion; 308. V-shaped rocker arm; 309. Hinge pin; 3010. Spring pin one; 3011. Spring pin two; 3012. Tension spring; 3013. Static magnetic block; 3014. Slide groove; 3015. Spring; 3016. Moving magnetic block; 3017. Locking socket; 3018. Linear groove; 3019. Linear guide rail; 3020. Linear slider; 400. Ceramic vacuum interrupter. 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] Please see Figures 1-10 The technical solution provided by the present invention specifically includes the following embodiments: A circuit breaker spring operating mechanism opening and closing speed debugging device includes a base 100, a power unit 200, a closing unit 300, and a ceramic vacuum interrupter 400. The power unit 200 is fixedly installed on the side of the base 100 and is used for debugging the opening and closing speed of the circuit breaker spring operating mechanism. The closing unit 300 is rotatably installed inside the base 100 and extends to both ends of the base 100. The ceramic vacuum interrupter 400 is fixedly installed on the top of the base 100.

[0021] For further details, please refer to [link / reference]. Figures 3-7As shown, the power unit 200 includes a transfer shaft 201, a main rocker arm 202, a locating pin 203, a secondary rocker arm 204, a circular groove 205, a locking clutch plate 206, a locking nut 207, and a rocker arm pin 208. The transfer shaft 201 is rotatably mounted inside the base 100 via bearings, and extends through both ends of the transfer shaft 201. The main rocker arm 202 is fixedly mounted on the outer wall end of the transfer shaft 201. The locating pin 203 is fixedly mounted on the side of the main rocker arm 202 away from the base 100, and the locating pin 203 is located on the surface of the main rocker arm 202 away from the transfer shaft 201. The secondary rocker arm 204 is rotatably mounted on the outer wall of the locating pin 203. The circular groove 205 is formed in... The auxiliary rocker arm 204 is located on the side away from the main rocker arm 202. The locking clutch plate 206 is sleeved around the positioning pin 203. The locking nut 207 is sleeved around the positioning pin 203. The rocker arm pin 208 is fixedly installed on the end of the auxiliary rocker arm 204 away from the main rocker arm 202. The base 100 is fixedly installed with a geared motor 2014 through a fixed bracket. The output shaft of the geared motor 2014 is fixedly installed with a drive gear 2015. The drive gear 2015 is meshed with a driven gear 2016 around its periphery. The driven gear 2016 is fixedly installed on the outer wall of the transfer shaft 201. The gear ratio between the driven gear 2016 and the drive gear 2015 is 7:6.

[0022] Specifically, the output shaft of the geared motor 2014 drives the drive gear 2015 to rotate, which in turn drives the transfer shaft 201 to rotate under the transmission action of the driven gear 2016. This, in turn, drives the two main rocker arms 202, the two positioning pins 203, the two auxiliary rocker arms 204, and the two rocker pins 208 to rotate together. Since the rocker pins 208 are slidably connected to the track groove of the track bar 301, the rocker pins 208 push the closing unit 300 upward as the auxiliary rocker arms 204 rotate, causing the circuit breaker to open and close.

[0023] For further details, please refer to [link / reference]. Figure 6 and Figure 7 As shown, the inner wall of the circular groove 205 is provided with multiple torsion limiting teeth 209 at equal angles, and the outer wall of the locking clutch plate 206 is provided with multiple torsion limiting teeth 2010 at equal angles that are adapted to the torsion limiting teeth 209. The torsion limiting teeth 2010 engage with the torsion limiting teeth 209. The outer wall of the positioning pin 203 is provided with multiple keyways 2012 at equal angles, and the inner wall of the locking clutch plate 206 is provided with multiple keyways 2012 at equal angles that are adapted to the keyways 2012. Block 2013 and key block 2013 are slidably connected to keyway 2012. The outer wall of positioning pin 203 is provided with thread 2011 that matches the thread of locking nut 207. The thread of locking nut 207 is threadedly engaged with thread 2011. The side of locking nut 207 abuts against the side of locking clutch plate 206. The side of locking clutch plate 206 away from locking nut 207 abuts against the inner end face of circular groove 205.

[0024] Specifically, when the circuit breaker's opening and closing speed needs adjustment, the locking nut 207 is rotated, causing it to move away from the main rocker arm 202 along the outer wall of the positioning pin 203. This gradually releases the resistance to the locking clutch plate 206, allowing the locking clutch plate 206 to slide away from the main rocker arm 202 along the outer wall of the positioning pin 203 and move out of the circular groove 205. This disengages the torque limiting tooth 209 from the thread 2011, allowing the auxiliary rocker arm 204 to rotate along the outer wall of the positioning pin 203. Then, the locking nut 207 is rotated again. 07 Tighten, locking clutch plate 206 is squeezed into the inside of circular groove 205, and torque limiting tooth 1 209 engages with torque limiting tooth 2010 again to prevent the adjusted auxiliary rocker arm 204 from rotating again. As the auxiliary rocker arm 204 rotates, the rotation radius of rocker pin 208 changes, that is, the length of the rocker pin 208 rotating power arm is adjusted. Therefore, when the speed of reduction motor 2014 is equal, the upward movement speed of track bar 301 can be adjusted, thereby realizing the debugging of the circuit breaker opening and closing speed.

[0025] For further details, please refer to [link / reference]. Figure 8 and Figure 9As shown, the closing unit 300 includes a track bar 301, a guide seat 302, a hinged base 303, a telescopic sleeve 304, a telescopic rod 305, a closing shaft 306, a protrusion 307, a V-shaped rocker arm 308, a hinge pin 309, a spring pin 1 3010, a spring pin 2 3011, and a tension spring 3012. The track bar 301 is movably disposed at the end of the base 100 and located at the top of the auxiliary rocker arm 204. The rocker arm pin 208 is slidably installed in the track groove of the track bar 301, guiding... The seat 302 is fixedly installed on the top of the track bar 301, the hinged base 303 is fixedly installed on the top of the guide seat 302, the telescopic sleeve 304 is hinged to the top of the hinged base 303, the telescopic rod 305 is slidably installed inside the telescopic sleeve 304 and extends to the top periphery of the telescopic sleeve 304, the closing shaft 306 is rotatably installed inside the base 100 through bearings and extends through to the periphery of both ends of the base 100, and the protrusion 307 is fixedly installed on the outer wall of the closing shaft 306. Furthermore, the surface of the protrusion 307 abuts against the bottom of the closing rod at the bottom of the ceramic vacuum interrupter 400. The V-shaped rocker arm 308 is fixedly installed at both ends of the outer wall of the closing shaft 306. The hinge pin 309 is fixedly installed at the end of the V-shaped rocker arm 308 away from the base 100 and is hinged to the top of the telescopic rod 305 through a joint bearing. Spring pin one 3010 is fixedly installed on the side of the V-shaped rocker arm 308 away from the base 100 and at the end away from the hinge pin 309. Spring pin two 3010 is also fixedly installed on the end of the V-shaped rocker arm 308 away from the hinge pin 309. 011 is fixedly installed on one side of the base 100 near the V-shaped rocker arm 308 and directly below it. The tension spring 3012 is fixedly installed between the spring tension pin 1 3010 and the spring tension pin 2 3011. Linear guide rails 3019 are fixedly installed on one side of the base 100 near the guide seat 302. Linear sliders 3020 are slidably installed on the periphery of the linear guide rails 3019. The linear sliders 3020 are fixedly installed to the guide seat 302 near the base 100 by bolts.

[0026] Specifically, the output shaft of the geared motor 2014 drives the drive gear 2015 to rotate, which in turn drives the transfer shaft 201 to rotate under the transmission action of the driven gear 2016. This, in turn, drives the two main rocker arms 202, the two positioning pins 203, the two auxiliary rocker arms 204, and the two rocker arm pins 208 to rotate together. Since the rocker arm pins 208 are slidably connected to the track groove of the track bar 301, the rocker arm pins 208 push the track bar 301 and the guide seat 302 upward as the track bar 301 and the guide seat 302 rotate together. Block 3020 is slidably connected to linear guide rail 3019, thus improving the accuracy and stability of the guide seat 302 during its upward movement. During this upward movement, the guide seat 302 drives the telescopic sleeve 304 and telescopic rod 305 upward via hinged base 303. Furthermore, under the connection of hinge pin 309 and V-shaped rocker arm 308, it drives the closing shaft rod 306 and protrusion 307 to rotate clockwise, causing the protruding part of protrusion 307 to face upward, pushing the opening and closing rod at the bottom of the ceramic vacuum interrupter 400 upward, thus energizing the circuit breaker. During the rotation of the V-shaped rocker arm 308, the spring pin 3010 also rotates. Initially, the spring 3012 is stretched and accumulates elastic force as the V-shaped rocker arm 308 rotates. When the spring pin 3010 passes directly above the closing shaft 306, the spring force of the spring 3012 is released as the V-shaped rocker arm 308 rotates. At this time, the spring 3012 between the spring pin 3010 and the spring pin 3011 deviates from the center of the closing shaft 306. Therefore, the spring force of the spring 3012 locks the closing shaft 306, preventing the closing shaft 306 and the protrusion 307 from reversing, thus keeping the protrusion 307 always facing upward. It should be noted that the rotation angle of the closing shaft 306 is determined by the angle limiter installed on its outer wall. When the protrusion 307 rotates upward, the angle limiter just reaches the maximum stroke of the angle, that is, the closing shaft 306 stops rotating.

[0027] For further details, please refer to [link / reference]. Figure 10 As shown, a static magnetic block 3013 is fixedly installed on the side of the base 100 near the V-shaped rocker arm 308 by bolts. A sliding groove 3014 is stamped and recessed on the side of the telescopic rod 305 away from the base 100. A spring 3015 is fixedly installed inside the sliding groove 3014. A moving magnetic block 3016 is slidably installed inside the sliding groove 3014. The end of the moving magnetic block 3016 is fixedly connected to the end of the sliding groove 3014. A moving magnetic block 3016 is provided through the side of the telescopic sleeve 304 facing the locking hole 3017. The moving magnetic block 3016 is engaged inside the locking hole 3017. The magnetic properties of the moving magnetic block 3016 are opposite to those of the static magnetic block 3013. A linear groove 3018 is provided through the side of the telescopic sleeve 304 away from the locking hole 3017. The interior of the linear groove 3018 is slidably connected to the outer wall of the recessed protrusion of the sliding groove 3014.

[0028] Specifically, when the closing shaft 306 is locked, the telescopic sleeve 304 drives the spring 3015 and the moving magnetic block 3016 to the position of the stationary magnetic block 3013. The magnetic repulsion of the stationary magnetic block 3013 on the moving magnetic block 3016 pushes the moving magnetic block 3016 to slide into the slide groove 3014, causing the spring 3015 to be compressed and store elastic force. During the process of the moving magnetic block 3016 sliding into the slide groove 3014, it will separate from the locking hole 3017, thereby releasing the lock between the telescopic sleeve 304 and the telescopic rod 305. At this time, even if the output shaft of the geared motor 2014 continues to rotate, it can only push the telescopic sleeve 304 to move upward, and will not cause the telescopic rod 305 to move, that is, it will not continue to apply torque to the closing shaft 306 to avoid damage to the components.

[0029] In operation, the output shaft of the reduction motor 2014 drives the drive gear 2015 to rotate, which in turn drives the transfer shaft 201 to rotate under the transmission action of the driven gear 2016. This, in turn, drives the two main rocker arms 202, the two positioning pins 203, the two auxiliary rocker arms 204, and the two rocker arm pins 208 to rotate together. Since the rocker arm pins 208 are slidably connected to the track groove of the track bar 301, the rocker arm pins 208 push the track bar 301 and the guide seat 302 upward as the auxiliary rocker arms 204 rotate. Because the guide seat 302 is connected to the track groove of the track bar 301, the rocker arm pins 208 push the track bar 301 and the guide seat 302 upward as the track bar 301 and the guide seat 302 rotate together. The linear slider 3020 is slidably connected to the linear guide rail 3019, thus improving the accuracy and stability of the guide seat 302 during its upward movement. During this upward movement, the guide seat 302 drives the telescopic sleeve 304 and telescopic rod 305 upward via the hinged base 303. Furthermore, under the connection of the hinge pin 309 and the V-shaped rocker arm 308, the closing shaft 306 and the protrusion 307 rotate clockwise, causing the protruding part of the protrusion 307 to face upward, pushing the opening and closing rod at the bottom of the ceramic vacuum interrupter 400 upward, thus energizing the circuit breaker. During the rotation of the V-shaped rocker arm 308, the spring pin 3010 also rotates. Initially, the tension spring 3012 is stretched and accumulates elastic force as the V-shaped rocker arm 308 rotates. When the spring pin 3010 passes directly above the closing shaft 306, the rebound force of the spring 3012 is released as the V-shaped rocker arm 308 rotates. At this time, the tension spring 3012 between the spring pin 3010 and the spring pin 3011 deviates from the center of the closing shaft 306. Therefore, under the elastic force of the tension spring 3012, the closing shaft 306 is locked, preventing the closing shaft 306 and the protrusion 307 from reversing, thus keeping the protrusion 307 always facing upwards. It should be noted that the rotation angle of the closing shaft 306 is determined by the angle limiter installed on its outer wall. When the protrusion 307 rotates upwards, the angle limiter just reaches the center. When the closing shaft 306 stops rotating at its maximum travel angle, it should be noted that when the closing shaft 306 is locked, the telescopic sleeve 304 just moves the spring 3015 and the moving magnetic block 3016 to the position of the stationary magnetic block 3013. The magnetic repulsion of the stationary magnetic block 3013 on the moving magnetic block 3016 pushes the moving magnetic block 3016 to slide into the slide groove 3014, causing the spring 3015 to be compressed and store elastic force. During the process of the moving magnetic block 3016 sliding into the slide groove 3014, it will separate from the locking hole 3017, thereby releasing the lock between the telescopic sleeve 304 and the telescopic rod 305. At this time, even if the output shaft of the geared motor 2014 continues to rotate, it can only push the telescopic sleeve 304 to move upward, and will not cause the telescopic rod 305 to move. That is, it will not continue to apply torque to the closing shaft 306 to avoid damage to the components. When the circuit breaker's opening and closing speed needs adjustment, the locking nut 207 is rotated to move it away from the main rocker arm 202 along the outer wall of the positioning pin 203, gradually releasing the resistance to the locking clutch plate 206. This allows the locking clutch plate 206 to slide away from the main rocker arm 202 along the outer wall of the positioning pin 203, moving out of the circular groove 205. This disengages the torque-limiting tooth 209 from the thread 2011, allowing the auxiliary rocker arm 204 to rotate along the outer wall of the positioning pin 203. Then, the locking nut 207 is rotated again. 7. Tighten the locking clutch plate 206, which is pressed into the inside of the circular groove 205. The first torque limiting tooth 209 engages with the second torque limiting tooth 2010 again, ensuring that the adjusted auxiliary rocker arm 204 will not rotate again. As the auxiliary rocker arm 204 rotates, the rotation radius of the rocker pin 208 changes, that is, the length of the rocker pin 208's power arm is adjusted. Therefore, when the speed of the geared motor 2014 is equal, the upward movement speed of the track bar 301 can be adjusted, thereby realizing the debugging of the circuit breaker's opening and closing speed.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A device for adjusting the opening and closing speed of a circuit breaker spring operating mechanism, characterized in that, include: Base (100); A power unit (200) is fixedly installed on the side of the base (100) and is used for adjusting the opening and closing speed of the circuit breaker spring operating mechanism. A closing unit (300) is rotatably disposed inside the base (100) and extends to both ends of the base (100); A ceramic vacuum interrupter (400) is fixedly mounted on the top of the base (100).

2. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 1, characterized in that, The power unit (200) includes: The transfer shaft (201) is rotatably mounted inside the base (100) via bearings and extends through both ends of the transfer shaft (201); Main rocker arm (202), which is fixedly installed on the outer wall end of the transfer shaft (201); A positioning pin (203) is fixedly installed on the side of the main rocker arm (202) away from the base (100), and the positioning pin (203) is located on the surface of the main rocker arm (202) away from the transfer shaft (201); A secondary rocker arm (204) is rotatably mounted on the outer wall of a positioning pin (203); A circular groove (205) is formed on the side of the secondary rocker arm (204) away from the main rocker arm (202); Locking clutch plate (206), the locking clutch plate (206) is sleeved around the locating pin (203); A locking nut (207) is fitted around the locating pin (203); Rocker arm pin (208), which is fixedly installed on the side end of the auxiliary rocker arm (204) away from the main rocker arm (202).

3. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 2, characterized in that, The inner wall of the circular groove (205) is provided with multiple torsion limiting teeth 1 (209) at equal angles. The outer wall of the locking clutch plate (206) is provided with multiple torsion limiting teeth 2 (2010) that are adapted to the torsion limiting teeth 1 (209) at equal angles. The torsion limiting teeth 2 (2010) mesh with the torsion limiting teeth 1 (209). The outer wall of the positioning pin (203) is provided with multiple keyways (2012) at equal angles. The inner wall of the locking clutch plate (206) is provided with multiple key blocks (2013) that are adapted to the keyways (2012) at equal angles. The key blocks (2013) are slidably connected to the keyways (2012).

4. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 3, characterized in that, The outer wall of the positioning pin (203) is provided with a thread (2011) that matches the thread of the locking nut (207). The thread of the locking nut (207) and the thread (2011) are threadedly connected. The side of the locking nut (207) abuts against the side of the locking clutch plate (206). The side of the locking clutch plate (206) away from the locking nut (207) abuts against the inner end face of the circular groove (205).

5. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 4, characterized in that, A geared motor (2014) is fixedly installed inside the base (100) by a fixed bracket. A drive gear (2015) is fixedly installed on the output shaft of the geared motor (2014). A driven gear (2016) meshes with the outer periphery of the drive gear (2015). The driven gear (2016) is fixedly installed on the outer wall of the transfer shaft (201). The gear ratio between the driven gear (2016) and the drive gear (2015) is 7:

6.

6. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 5, characterized in that, The closing unit (300) includes: The track bar (301) is movably disposed at the end of the base (100) and located at the top of the auxiliary rocker arm (204), and the rocker arm pin (208) is slidably installed in the track groove of the track bar (301); Guide seat (302), the guide seat (302) is fixedly installed on the top of the track bar (301); A hinged base (303) is fixedly mounted on the top of the guide seat (302); Telescopic sleeve (304), said telescopic sleeve (304) is hinged to the top of the hinge base (303); Telescopic rod (305), which is slidably mounted inside the telescopic sleeve (304) and extends to the top periphery of the telescopic sleeve (304); The closing shaft (306) is rotatably mounted inside the base (100) via bearings and extends through to the outer periphery of both ends of the base (100); A protrusion (307) is fixedly installed on the outer wall of the closing shaft (306), and the surface of the protrusion (307) abuts against the bottom of the closing shaft of the ceramic vacuum interrupter (400); V-shaped rocker arm (308), the V-shaped rocker arm (308) is fixedly installed on both ends of the outer wall of the closing shaft (306); A hinge pin (309) is fixedly mounted on one side end of the V-shaped rocker arm (308) away from the base (100) and is hinged to the top of the telescopic rod (305) via a spherical bearing.

7. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 6, characterized in that, The closing unit (300) also includes: Spring pin 1 (3010) is fixedly installed on the side of the V-shaped rocker arm (308) away from the base (100) and away from the end of the hinge pin (309); Spring pin two (3011) is fixedly installed on one side of the base (100) near the V-shaped rocker arm (308) and located directly below it; A tension spring (3012) is fixedly installed between spring pin one (3010) and spring pin two (3011).

8. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 7, characterized in that, A static magnetic block (3013) is fixedly installed on the side of the base (100) near the V-shaped rocker arm (308) by bolts. A groove (3014) is stamped and recessed on the side of the telescopic rod (305) away from the base (100). A spring (3015) is fixedly installed inside the groove (3014). A moving magnetic block (3016) is slidably installed inside the groove (3014). The end of the moving magnetic block (3016) is fixedly connected to the end of the groove (3014). A moving magnetic block (3016) is provided through the side of the telescopic sleeve (304) facing the locking hole (3017). The moving magnetic block (3016) is engaged inside the locking hole (3017). The moving magnetic block (3016) has the opposite magnetism to the static magnetic block (3013).

9. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 8, characterized in that, The telescopic sleeve (304) has a linear groove (3018) extending through one side away from the locking hole (3017), and the interior of the linear groove (3018) is slidably connected to the outer wall of the recessed protrusion of the sliding groove (3014).

10. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 9, characterized in that, Linear guide rails (3019) are fixedly installed on one side of the base (100) near the guide seat (302). Linear sliders (3020) are slidably installed on the periphery of the linear guide rails (3019). The linear sliders (3020) are fixedly installed on one side of the guide seat (302) near the base (100) by bolts.

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