A circuit breaker spring operating mechanism opening and closing speed debugging device

Abstract

The application belongs to the technical field of circuit breaker testing equipment, in particular to a circuit breaker spring operating mechanism opening and closing speed debugging device, which comprises a base, a power unit, a closing unit and a ceramic vacuum arc-extinguishing chamber. The power unit is fixedly arranged at the side of the base and used for debugging the opening and closing speed of the circuit breaker spring operating mechanism. The closing unit is rotatably arranged in the base and extends to both ends of the base. The ceramic vacuum arc-extinguishing chamber is fixedly arranged at the top of the base. The outer wall of the positioning pin is rotated to change the radius of the rocking arm pin, that is, the length of the rocking arm pin is adjusted. Therefore, the speed of the track strip moving upward is adjusted under the condition that the rotating speed of the speed reducer is equal, so as to realize the debugging of the opening and closing speed of the circuit breaker.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of circuit breaker testing equipment, and particularly relates to a circuit breaker spring operating mechanism opening and closing speed debugging device. BACKGROUND

[0002] A high-voltage circuit breaker arc extinguishing system is used to extinguish the arc generated between contacts when the circuit is opened. The arc extinguishing system comprises two parts: a strong spring operating mechanism to quickly separate the circuit breaker contacts; and an arc extinguishing chamber arranged above the contacts. The opening and closing speed of the high-voltage circuit breaker is an important characteristic parameter of the circuit breaker, reflecting the movement characteristics of the operating mechanism and the transmission mechanism of the circuit breaker during the opening and closing process. If the opening and closing speed of the circuit breaker exceeds or is lower than the specified value, the operation state and service life of the circuit breaker will be affected. If the closing speed of the circuit breaker is insufficient, the contact closing vibration will cause the pre-breakdown time to be too long, and if the opening speed of the circuit breaker is insufficient, the arc burning time will be too long, which will cause the circuit breaker contacts to burn out, so that the circuit breaker cannot continue to work, and in severe cases, the circuit breaker will explode. Therefore, the opening and closing speed of the circuit breaker needs to be adjusted before installation. SUMMARY

[0003] The purpose of the present application is to provide a circuit breaker spring operating mechanism opening and closing speed debugging device to solve the problems raised in the background.

[0004] The present application provides the following technical scheme: a circuit breaker spring operating mechanism opening and closing speed debugging device, comprising:

[0005] a base;

[0006] a power unit fixedly arranged on the side of the base and used for debugging the opening and closing speed of the circuit breaker spring operating mechanism;

[0007] a closing unit rotatably arranged in the interior of the base and extending to both ends of the base;

[0008] a ceramic vacuum arc chamber fixedly arranged on the top of the base.

[0009] As a preferred scheme of the present application, the power unit comprises:

[0010] a countershaft rotatably mounted in the interior of the base and penetrating through both ends of the countershaft;

[0011] a main rocker arm fixedly mounted on the outer wall end of the countershaft;

[0012] a positioning pin fixedly mounted on the side of the main rocker arm away from the base, and the positioning pin is located at the end of the surface of the main rocker arm away from the countershaft;

[0013] The auxiliary rocker arm is rotationally installed on the outer wall of the positioning pin;

[0014] The circular groove is formed on the side of the auxiliary rocker arm away from the main rocker arm;

[0015] The locking clutch plate is sleeved on the outer wall of the positioning pin;

[0016] The locking nut is sleeved on the outer wall of the positioning pin;

[0017] The rocker pin is fixedly installed on the end of the side of the auxiliary rocker arm away from the main rocker arm.

[0018] As a preferred scheme of the present application, the inner wall of the circular groove is equiangularly provided with a plurality of torque limiting teeth I, the outer wall of the locking clutch plate is equiangularly provided with a plurality of torque limiting teeth II matched with the torque limiting teeth I, the torque limiting teeth II are engaged with the torque limiting teeth I, the outer wall of the positioning pin is equiangularly provided with a plurality of key grooves, and the inner wall of the locking clutch plate is equiangularly provided with a plurality of key blocks matched with the key grooves, and the key blocks are slidingly connected with the key grooves.

[0019] As a preferred scheme of the present application, the outer wall of the positioning pin is provided with thread teeth matched with the thread teeth of the locking nut, the thread teeth of the locking nut are threadedly connected with the thread teeth, the side of the locking nut is in abutment with the side of the locking clutch plate, and the side of the locking clutch plate away from the locking nut is in abutment with the inner end surface of the circular groove.

[0020] As a preferred scheme of the present application, the inside of the base is fixedly installed with a speed reducer through a fixed support, the output shaft of the speed reducer is fixedly installed with a driving gear, the outer periphery of the driving gear is engaged with a driven gear, the driven gear is fixedly installed on the outer wall of the split shaft, and the gear ratio of the driven gear to the driving gear is 7:6.

[0021] As a preferred scheme of the present application, the closing unit comprises:

[0022] The track strip is movably arranged at the end of the base and located at the top of the auxiliary rocker arm, and the rocker pin is slidingly installed in the track groove of the track strip;

[0023] The guide seat is fixedly installed at the top of the track strip;

[0024] The hinged base is fixedly installed at the top of the guide seat;

[0025] The telescopic sleeve is hinged at the top of the hinged base;

[0026] The telescopic rod is slidingly installed in the inside of the telescopic sleeve and extends to the outer periphery of the top of the telescopic sleeve;

[0027] The closing shaft rod is rotatably installed in the inside of the base through a bearing and extends through to the peripheral of the two ends of the base;

[0028] The protruding block is fixedly installed on the outer wall of the closing shaft rod, and the surface of the protruding block is in abutment with the bottom of the closing shaft rod of the ceramic vacuum arc-extinguishing chamber bottom part;

[0029] The V-shaped rocker arm is fixedly installed on the outer wall of the two ends of the closing shaft rod;

[0030] The hinge pin is fixedly installed on the side end of the V-shaped rocker arm away from the base, and is hingedly connected with the top of the telescopic rod through a joint bearing.

[0031] As a preferred scheme of the present application, the closing unit further comprises:

[0032] The spring pull pin one is fixedly installed on the side of the V-shaped rocker arm away from the base and away from the hinge pin;

[0033] The spring pull pin two is fixedly installed on the side of the base close to the V-shaped rocker arm and directly below the V-shaped rocker arm;

[0034] The tension spring is fixedly installed between the spring pull pin one and the spring pull pin two.

[0035] As a preferred scheme of the present application, the side of the base close to the V-shaped rocker arm is fixedly installed with a static magnetic block through a bolt, the side of the telescopic rod away from the base is concave-pressed with a sliding groove, the inside of the sliding groove is fixedly installed with a spring, the inside of the sliding groove is slidingly installed with a dynamic magnetic block, the end of the dynamic magnetic block is fixedly connected with the end of the spring, the side of the telescopic sleeve opposite to the dynamic magnetic block is throughly provided with a locking insertion hole, the dynamic magnetic block is clamped in the inside of the locking insertion hole, and the dynamic magnetic block is magnetically opposite to the static magnetic block.

[0036] As a preferred scheme of the present application, the side of the telescopic sleeve away from the locking insertion hole is throughly provided with a linear groove, and the inside of the linear groove is slidingly connected with the outer wall of the protruding surface of the sliding groove.

[0037] As a preferred scheme of the present application, the side of the base close to the guide seat is fixedly installed with a linear guide rail, the outer periphery of the linear guide rail is slidingly installed with a linear sliding block, and the linear sliding block is fixedly installed with the side of the guide seat close to the base through a bolt.

[0038] Compared with the prior art, the present application has the following beneficial effects:

[0039] 1. The application drives the driving gear to rotate through the output shaft of the speed reducer, thereby driving the driven shaft to rotate under the transmission of the driving gear, and further driving the two main rocker arms, two positioning pins, two auxiliary rocker arms and two rocker pins to rotate together. Since the rocker pin is in sliding connection with the track groove of the track bar, the rocker pin pushes the closing unit upward in the process of rotating with the auxiliary rocker arm, so that the circuit breaker is closed and opened, and the auxiliary rocker arm is rotated along the outer wall of the positioning pin, so that the rotating radius of the rocker pin changes, that is, the length of the rotating arm of the rocker pin is adjusted. Therefore, under the condition that the rotating speed of the speed reducer is equal, the upward moving speed of the track bar can be adjusted, so that the closing and opening speed of the circuit breaker is adjusted.

[0040] 2. In the process of rotating the V-shaped rocker arm, the hinge pin is driven to rotate. Initially, the tension spring is stretched and accumulates elastic force in the process of rotating the V-shaped rocker arm. When the spring pin I passes directly above the closing shaft, the elastic force of the spring is released in the process of rotating the V-shaped rocker arm. At this time, the spring between the spring pin I and the spring pin II deviates from the center of the closing shaft, so that the closing shaft is locked under the action of the elastic force of the spring, so that the convex block is prevented from being reversed, so that the convex block always keeps upward.

[0041] 3. When the closing shaft is locked, the telescopic sleeve drives the spring and the moving magnet block to move to the position of the static magnet block. The magnetic repulsion of the static magnet block pushes the moving magnet block to slide to the inside of the sliding groove, so that the spring is compressed and accumulates elastic force. In the process of sliding to the inside of the sliding groove, the moving magnet block is separated from the locking hole, so that the telescopic sleeve and the telescopic rod are unlocked. At this time, even if the output shaft of the speed reducer continues to rotate, it can only push the telescopic sleeve to move upward, and the telescopic rod will not move, that is, the torque will not be continuously applied to the closing shaft, so as to avoid damage to the parts. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a front view structural diagram of the application;

[0043] Figure 2 It is a schematic diagram of the internal structure of the base of the application;

[0044] Figure 3 It is a structural diagram of the power unit of the application;

[0045] Figure 4 It is a plan view structural diagram of the power unit of the application;

[0046] Figure 5 It is a partial structural diagram of the application; Figure 3

[0047] Figure 6 It is a structural diagram of the power unit in the expanded state of the application; ​

[0048] Figure 7 Fig. 2 is a schematic view of a partial structure of the main rocker arm of the application;

[0049] Figure 8 Fig. 3 is a schematic view of a structure of the closing unit of the application;

[0050] Figure 9 Fig. 4 is a schematic view of a side cross-sectional structure of the telescopic sleeve of the application;

[0051] Figure 10 Fig. 5 is a schematic view of an enlarged structure at A in Fig. 4. Figure 9 Fig. 6 is a schematic view of an enlarged structure at B in Fig. 4.

[0052] In the figure: 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 piece; 207, locking nut; 208, rocker pin; 209, torsion-limiting tooth one; 2010, torsion-limiting tooth two; 2011, threaded wire tooth; 2012, key groove; 2013, key block; 2014, speed-reducing motor; 2015, driving gear; 2016, driven gear; 300, closing unit; 301, track bar; 302, guide seat; 303, hinged base; 304, telescopic sleeve; 305, telescopic rod; 306, closing shaft rod; 307, protruding block; 308, V-shaped rocker arm; 309, hinged pin; 3010, spring pull pin one; 3011, spring pull pin two; 3012, tension spring; 3013, static magnetic block; 3014, sliding groove; 3015, spring; 3016, dynamic magnetic block; 3017, locking jack; 3018, linear slot; 3019, linear guide rail; 3020, linear sliding block; 400, ceramic vacuum arc-extinguishing chamber. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0054] Please refer to Figures 1-10 The technical solutions provided by the application specifically include the following embodiments:

[0055] The utility model provides a kind of circuit breaker spring operating mechanism opening and closing speed debugging device, including base 100, power unit 200, closing unit 300 and ceramic vacuum arc-extinguishing chamber 400, power unit 200 is fixedly arranged in the side of base 100, for circuit breaker spring operating mechanism opening and closing speed debugging, closing unit 300 is rotationally arranged in the inside of base 100, and extend to both ends of base 100, ceramic vacuum arc-extinguishing chamber 400 is fixedly arranged in the top of base 100.

[0056] Further, with particular reference to Figures 3-7 As shown, power unit 200 includes split shaft 201, main rocker arm 202, positioning pin 203, vice rocker arm 204, round groove 205, locking clutch piece 206, locking nut 207 and rocker pin 208, split shaft 201 is rotationally installed in the inside of base 100, and penetrates both ends of split shaft 201, main rocker arm 202 is fixedly installed on the outer wall end of split shaft 201, positioning pin 203 is fixedly installed on the side of main rocker arm 202 away from base 100, and positioning pin 203 is located on the surface of main rocker arm 202 away from one end of split shaft 201, vice rocker arm 204 is rotationally installed on the outer wall of positioning pin 203, round groove 205 is opened in the side of vice rocker arm 204 away from main rocker arm 202, locking clutch piece 206 is sleeved on the periphery of positioning pin 203, locking nut 207 is sleeved on the periphery of positioning pin 203, rocker pin 208 is fixedly installed on the side end of vice rocker arm 204 away from main rocker arm 202, the inside of base 100 is fixedly installed with speed reducer motor 2014 by fixed support, driving gear 2015 is fixedly installed on the output shaft of speed reducer motor 2014, driving gear 2015 is engaged with driven gear 2016 on the periphery, and driven gear 2016 is fixedly installed on the outer wall of split shaft 201, and the gear ratio of driven gear 2016 and driving gear 2015 is 7:6.

[0057] Specifically, the output shaft of speed reducer motor 2014 drives driving gear 2015 to rotate, thereby driving split shaft 201 to rotate under the transmission action of driven gear 2016, and in turn driving two main rocker arms 202, two positioning pins 203, two vice rocker arms 204 and two rocker pins 208 to rotate together, since rocker pin 208 is slidably connected with the track groove of track bar 301, rocker pin 208 pushes closing unit 300 upward during the rotation of vice rocker arm 204, so that the circuit breaker closing.

[0058] Further, with particular reference to Figure 6 And Figure 7As shown, the inner wall of the circular groove 205 is provided with a plurality of equal-angle torsion limiting teeth one 209, the outer wall of the locking clutch plate 206 is provided with a plurality of equal-angle torsion limiting teeth two 2010 matched with the torsion limiting teeth one 209, the torsion limiting teeth two 2010 are engaged with the torsion limiting teeth one 209, the outer wall of the positioning pin 203 is provided with a plurality of equal-angle key grooves 2012, the inner wall of the locking clutch plate 206 is provided with a plurality of key blocks 2013 matched with the key grooves 2012, the key blocks 2013 are slidingly connected with the key grooves 2012, the outer wall of the positioning pin 203 is provided with a thread 2011 matched with the thread of the locking nut 207, the thread of the locking nut 207 is threadedly connected with the thread 2011, the side surface of the locking nut 207 is in abutment with the side surface of the locking clutch plate 206, and the side surface of the locking clutch plate 206 away from the locking nut 207 is in abutment with the inner end surface of the circular groove 205.

[0059] Specifically, when the breaker opening and closing stop speed needs to be adjusted, the locking nut 207 is rotated to move along the outer wall of the positioning pin 203 away from the main rocker arm 202, gradually releasing the abutment of the locking clutch plate 206, and the locking clutch plate 206 is slid along the outer wall of the positioning pin 203 away from the main rocker arm 202, removed from the inside of the circular groove 205, so that the torsion limiting teeth one 209 is disengaged from the thread 2011, and the auxiliary rocker arm 204 is rotated along the outer wall of the positioning pin 203, then the locking nut 207 is tightened again, the locking clutch plate 206 is pressed into the inside of the circular groove 205, the torsion limiting teeth one 209 is engaged with the torsion limiting teeth two 2010 again, preventing the auxiliary rocker arm 204 from rotating again after adjustment, and because the auxiliary rocker arm 204 is rotated, the rotating radius of the rocker pin 208 is changed, that is, the length of the rotating arm of the rocker pin 208 is adjusted, so that the speed of the track bar 301 moving upward can be adjusted under the condition that the rotating speed of the speed reducer motor 2014 is equal, thereby realizing the debugging of the breaker opening and closing speed.

[0060] Further, with reference to Figure 8 and Figure 9As shown, the closing unit 300 comprises 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 308, a hinged pin 309, a spring pull pin 3010, a spring pull pin 3011 and a tension spring 3012, the track bar 301 is movably arranged at the end of the base 100 and on the top of the auxiliary rocker 204, the rocker pin 208 is slidingly installed in the track groove of the track bar 301, the guide 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 on the top of the hinged base 303, the telescopic rod 305 is slidingly installed in the inside of the telescopic sleeve 304 and extends to the outside of the top of the telescopic sleeve 304, the closing shaft 306 is rotatably installed in the inside of the base 100 and extends to the outside of both ends of the base 100, the 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 rod of the ceramic vacuum arc-extinguishing chamber 400, the V-shaped rocker 308 is fixedly installed on the outer wall of both ends of the closing shaft 306, the hinged pin 309 is fixedly installed on the side end of the V-shaped rocker 308 away from the base 100 and is hinged with the top of the telescopic rod 305 through a joint bearing, the spring pull pin 3010 is fixedly installed on the side of the V-shaped rocker 308 away from the base 100 and away from the end of the hinged pin 309, the spring pull pin 3011 is fixedly installed on the side of the base 100 close to the V-shaped rocker 308 and directly below the V-shaped rocker 308, and the tension spring 3012 is fixedly installed between the spring pull pin 3010 and the spring pull pin 3011, the straight line guide rails 3019 are fixedly installed on the side of the base 100 close to the guide seat 302, and the straight line sliding blocks 3020 are slidingly installed on the periphery of the straight line guide rails 3019, and the straight line sliding blocks 3020 are fixedly installed on the side of the guide seat 302 close to the base 100 through bolts.

[0061] Specifically, the output shaft of the speed reducer 2014 drives the main driving gear 2015 to rotate, thereby driving the driven shaft 201 to rotate under the driving action of the driven gear 2016, and further driving 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 pin 208 is in sliding connection with the track groove of the track strip 301, the rocker pin 208 pushes the track strip 301 and the guide seat 302 upward during the rotation of the auxiliary rocker arm 204. Since the guide seat 302 is in sliding connection with the linear guide rail 3019 through the linear sliding block 3020, the accuracy and stability of the guide seat 302 during the upward movement are improved. During the upward movement of the guide seat 302, the telescopic sleeve 304 and the telescopic rod 305 are moved upward through the hinged base 303, and further, under the connecting action of the hinged pin 309 and the V-shaped rocker arm 308, the closing shaft rod 306 and the protruding block 307 are rotated clockwise, so that the protruding part of the protruding block 307 faces upward, and the opening and closing rod at the bottom of the ceramic vacuum arc-extinguishing chamber 400 is pushed upward. When the circuit breaker is energized, the V-shaped rocker arm 308 also drives the spring pull pin 3010 to rotate. Initially, the tension spring 3012 is stretched and accumulates elastic force during the rotation of the V-shaped rocker arm 308. When the spring pull pin 3010 passes above the closing shaft rod 306, the elastic force of the tension spring 3012 is released during the rotation of the V-shaped rocker arm 308. At this time, the tension spring 3012 between the spring pull pin 3010 and the spring pull pin 3011 deviates from the center of the closing shaft rod 306, so that the closing shaft rod 306 is locked under the elastic force of the tension spring 3012, preventing the closing shaft rod 306 and the protruding block 307 from being reversed, so that the protruding block 307 always faces upward. It should be noted that the angle of the closing shaft rod 306 is determined by the angle limiter installed on the outer wall thereof. When the protruding block 307 rotates upward, the angle limiter reaches the maximum angle, i.e., the closing shaft rod 306 stops rotating.

[0062] Further, with reference to Figure 10 the side of the base 100 close to the V-shaped rocker arm 308 is fixedly installed with a static magnetic block 3013 through bolts, the side of the telescopic rod 305 away from the base 100 is stamped with a sliding groove 3014, the sliding groove 3014 is fixedly installed with a spring 3015 inside, the sliding groove 3014 is slidably installed with a dynamic magnetic block 3016 inside, the end of the dynamic magnetic block 3016 is fixedly connected with the end of the spring 3015, the side of the telescopic sleeve 304 opposite to the dynamic magnetic block 3016 is provided with a locking insertion hole 3017, the dynamic magnetic block 3016 is clamped inside the locking insertion hole 3017, the dynamic magnetic block 3016 is opposite to the static magnetic block 3013 in magnetic property, the side of the telescopic sleeve 304 away from the locking insertion hole 3017 is provided with a linear slot 3018, the linear slot 3018 is slidably connected with the protruding surface of the sliding groove 3014.

[0063] Specifically, when the closing shaft 306 is locked, the telescopic sleeve 304 just drives the spring 3015 and the moving magnetic block 3016 to move to the position of the static magnetic block 3013, the magnetic repulsion of the static magnetic block 3013 to the moving magnetic block 3016 pushes the moving magnetic block 3016 to slide to the inside of the sliding groove 3014, so that the spring 3015 is compressed to accumulate elastic force, and in the process of the moving magnetic block 3016 sliding to the inside of the sliding groove 3014, the moving magnetic block 3016 will be separated from the locking hole 3017, so that the telescopic sleeve 304 and the telescopic rod 305 are unlocked, at this time, even if the output shaft of the speed reducer 2014 continues to rotate, it can only push the telescopic sleeve 304 to move upward, and the telescopic rod 305 will not move, that is, the torque will not continue to be applied to the closing shaft 306, so as to avoid damage to the components.

[0064] In operation, the output shaft of the speed reducer 2014 drives the driving gear 2015 to rotate, thereby driving the driven shaft 201 to rotate under the driving of the driven gear 2016, and further driving 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 pin 208 is in sliding connection with the track groove of the track strip 301, the rocker pin 208 pushes the track strip 301 and the guide seat 302 upward during the rotation of the auxiliary rocker arm 204. Since the guide seat 302 is in sliding connection with the linear guide rail 3019 through the linear sliding block 3020, the accuracy and stability of the guide seat 302 during the upward movement are improved. During the upward movement of the guide seat 302, the telescopic sleeve 304 and the telescopic rod 305 are driven by the hinged base 303 to move upward, and further under the connection of the hinged pin 309 and the V-shaped rocker arm 308, the closing shaft rod 306 and the protruding block 307 are driven to rotate clockwise, so that the protruding part of the protruding block 307 faces upward, and the opening and closing rod at the bottom of the ceramic vacuum arc-extinguishing chamber 400 is pushed upward. When the circuit breaker is energized, the V-shaped rocker arm 308 also drives the spring pull pin 3010 to rotate. Initially, the tension spring 3012 is stretched and accumulates elastic force during the rotation of the V-shaped rocker arm 308. When the spring pull pin 3010 passes above the closing shaft rod 306, the elastic force of the tension spring 3012 is released during the rotation of the V-shaped rocker arm 308. At this time, the tension spring 3012 between the spring pull pin 3010 and the spring pull pin 3011 deviates from the center of the closing shaft rod 306, so that the closing shaft rod 306 is locked under the elastic force of the tension spring 3012, preventing the closing shaft rod 306 and the protruding block 307 from reversing, so that the protruding block 307 always faces upward. It should be noted that the angle of rotation of the closing shaft rod 306 is determined by the angle limiter installed on the outer wall thereof. When the protruding block 307 rotates upward, the angle limiter reaches the maximum stroke, i.e., the closing shaft rod 306 stops rotating. It should be additionally noted that when the closing shaft rod 306 is locked, the telescopic sleeve 304 drives the spring 3015 and the moving magnetic block 3016 to move to the position of the static magnetic block 3013. The moving magnetic block 3016 is pushed to slide into the slide groove 3014 under the magnetic repulsion of the static magnetic block 3013, so that the spring 3015 is compressed and accumulates elastic force. During the sliding of the moving magnetic block 3016 into the slide groove 3014, the moving magnetic block 3016 is separated from the locking hole 3017, so that the telescopic sleeve 304 and the telescopic rod 305 are unlocked. At this time, even if the output shaft of the speed reducer 2014 continues to rotate, it can only push the telescopic sleeve 304 upward, and cannot move the telescopic rod 305, i.e., cannot continue to apply torque to the closing shaft rod 306, so as to avoid damage to the components.

[0065] When the breaker opening and closing stop speed regulation is needed, the locking nut 207 is rotated to move away from the main rocker arm 202 along the outer wall of the positioning pin 203, gradually releasing the interference of the locking clutch plate 206, making the locking clutch plate 206 slide along the outer wall of the positioning pin 203 away from the main rocker arm 202, moving out of the circular groove 205, so that the torque limiting tooth one 209 is separated from the threaded tooth 2011, and then the secondary rocker arm 204 is rotated along the outer wall of the positioning pin 203, and then the locking nut 207 is tightened again, the locking clutch plate 206 is pressed to the inside of the circular groove 205, and the torque limiting tooth one 209 is engaged with the torque limiting tooth two 2010 again, ensuring that the adjusted secondary rocker arm 204 will not rotate again. Because the secondary rocker arm 204 rotates, the rotation radius of the rocker pin 208 changes, that is, the length of the rocker pin 208 rotation arm is adjusted, so under the condition that the speed of the speed reducer motor 2014 is equal, the speed of the track bar 301 upward movement can be adjusted, thereby realizing the debugging of the breaker opening and closing speed.

[0066] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application.

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); 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); A rocker arm pin (208) is fixedly installed on the side end of the auxiliary rocker arm (204) away from the main rocker arm (202); 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.

2. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 1, 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).

3. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 2, 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).

4. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 3, 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.

5. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 1, 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 the V-shaped rocker arm (308); A tension spring (3012) is fixedly installed between spring pin one (3010) and spring pin two (3011).

6. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 5, 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 spring (3015). A locking hole (3017) is provided through the side of the telescopic sleeve (304) facing the moving magnetic block (3016). The moving magnetic block (3016) is engaged inside the locking hole (3017). The moving magnetic block (3016) has opposite magnetism to the static magnetic block (3013).

7. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 6, 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).

8. The circuit breaker spring operating mechanism opening and closing speed debugging device according to claim 7, 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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