A large current manual and electric integrated high voltage vacuum permanent magnet circuit breaker
By designing a mobile-electric integrated high-voltage vacuum permanent magnet circuit breaker, combined with permanent magnets and manual driving mechanisms, the safety hazards of traditional circuit breakers in the absence of power are solved, and the effect of stable operation under any power supply state is achieved.
Patent Information
- Application Number
- CN202111465519.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-03
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2041-12-03
AI Technical Summary
Traditional vacuum permanent magnet circuit breakers cannot efficiently and stably turn on and disconnect the circuits in the absence of power or power loss, which poses a safety hazard.
A high-current electric integrated high-voltage vacuum permanent magnet circuit breaker is designed, combining manual and electric control, using permanent magnet mechanism, manual driving mechanism and vacuum circuit breaker mechanism, through permanent magnet drive rod, drive claw arm and manual driving sprocket set and other components to realize automatic and manual operation of the circuit breaker, ensuring that the circuit can be switched on and off safely and stably under any power supply state.
It can efficiently and stably turn on and off the circuit in any power supply state, enhance the safety of use and avoid the existence of safety hazards.
Smart Images
Figure CN113990706B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a circuit breaker, in particular to a large-current manual-electric integrated high-voltage vacuum permanent-magnet circuit breaker. Background Art
[0002] Vacuum permanent magnetic circuit breakers are the most commonly used control and protection devices in power distribution circuits. They have a wide range of applications and are widely used in all levels of outgoing and terminal systems of power distribution systems. Traditional vacuum permanent magnetic circuit breakers require power supply. In the event of power shortage or power failure, they cannot efficiently and stably connect and disconnect circuits, posing a safety hazard. Summary of the invention
[0003] The present invention provides a large-current manual-electric integrated high-voltage vacuum permanent magnet circuit breaker which effectively takes into account safe and stable operation on the basis of manual and electric control.
[0004] The technical solution adopted by the present invention is: a large-current manual-electric integrated high-voltage vacuum permanent magnet circuit breaker, comprising a permanent magnet mechanism, a vacuum circuit breaker mechanism and a manual driving mechanism arranged in a shell, the permanent magnet mechanism is connected to a permanent magnet driving rod below, the permanent magnet driving rod is hinged to one end of a driving crank arm below, the middle part of the driving crank arm is connected to the shell through the crank arm shaft, and the other end of the driving crank arm is connected to the lower end of the insulating pull rod of the vacuum circuit breaker, characterized in that: the manual driving mechanism comprises a manual active shaft, a manual driven shaft, a manual driving sprocket group, a manual driving cam, a hanging rod, a pawl, a ratchet, a reset spring, a tensioning spring, a tensioning seat, a tensioning swing arm, a tensioning spring, a reset wrench, a reset driving shaft, a reset pull plate, a reset pull rod, and a reset driving arm, the manual active shaft, the manual driven shaft, and the reset driving shaft are parallel to the crank arm shaft and connected to the shell, the manual active shaft and the manual driven shaft are connected to the manual driving sprocket group, the manual driven shaft is connected to the manual driving cam, and the manual The driving cam is fitted on one end of the driving crank arm; an elliptical cam is fixedly connected to the manual active shaft or an elliptical cross-section shaft segment is set, the elliptical cam or the elliptical shaft segment is connected to the vertical waist hole of the hanging rod, the lower end of the hanging rod is hinged to one end of the pawl, one end of the pawl is connected to the outer shell through a reset spring, the other end of the pawl is hinged to the outer shell, and a ratchet connected to the manual driven shaft is correspondingly arranged below the middle of the pawl; the reset driving shaft is externally connected to a reset wrench, the inner section of the reset driving shaft is hinged to the upper end of the reset pull plate, the lower end of the reset pull plate is rotatably connected to the reset adjustment column, the reset adjustment column is connected to the reset pull rod, the reset pull rod is movably connected to one end of the reset driving arm, and the other end of the reset driving arm is connected to one end of the driving crank arm; one end of the tensioning swing arm is connected to the manual driven shaft, the other end of the tensioning swing arm is hinged to the lower end of the tensioning seat, the upper end of the tensioning seat is hooked to the lower end of the tensioning spring, and the upper end of the tensioning spring is hooked in the outer shell; the lower end of the tensioning spring is hooked to the crank arm shaft, and the upper end is hooked in the outer shell.
[0005] Furthermore, both sides of the upper end of the tension seat are respectively hooked to the lower ends of two tension springs, and the upper ends of the two tension springs are hooked in the shell.
[0006] Furthermore, a driving guide groove is arranged on the permanent magnetic driving rod, the manual driven shaft passes through the driving guide groove, and the manual driving cam is fitted on the outer side of the hinge pin shaft between the driving crank arm and the permanent magnetic driving rod.
[0007] Furthermore, the driving crank arm and the permanent magnet driving rod hinge pin are connected through the other end of the reset driving arm.
[0008] Furthermore, it also includes a manual limit swing arm, a manual limit column, and a manual limit reset spring. The manual active shaft is connected to the upper end of the manual limit swing arm. The shell is provided with a manual limit column for limiting excessive rotation of the manual limit swing arm. The lower end of the manual limit swing arm is connected to the shell via a manual limit reset spring.
[0009] Furthermore, the permanent magnet mechanism includes a power control module, a cylinder body, an upper drive coil, a lower drive coil, an intermediate magnet ring structure, a moving iron core, and an electromagnetic drive shaft. The power control module is arranged in the outer shell, the power drive module is connected to the upper and lower drive coils in the cylinder body, the intermediate magnet ring structure is arranged between the upper and lower drive coils, the moving iron core is connected to the electromagnetic drive shaft and is in a lifting and lowering driving state within the upper drive coil, the intermediate magnet ring structure, and the lower drive coil, and the permanent magnet drive rod is connected to the bottom of the electromagnetic drive shaft.
[0010] When the circuit breaker is in the electric working state, the power control module supplies the lower drive coil to drive the moving iron core to drive the electromagnetic drive shaft downward, and the permanent magnet drive rod drives one end of the driving crank arm downward, so that the driving crank arm rotates around the crank arm axis, and the other end of the driving crank arm is lifted and the insulating pull rod rises to close the vacuum circuit breaker; conversely, the power control module supplies the upper drive coil to drive the moving iron core to drive the electromagnetic drive shaft upward, thereby completing the driving of the other end of the crank arm to descend and disconnect the vacuum circuit breaker.
[0011] When the circuit breaker is operated manually, an external wrench is used to drive the manual active shaft to rotate. The rotation of the manual active shaft drives the manual driven shaft to rotate through the manual drive sprocket set. The manual drive cam on the manual driven shaft rotates with the driving crank arm and the pin shaft hinged with the permanent magnet driving rod, and one end of the driving crank arm is pressed down to complete the closing. At the same time, the elliptical cam or the elliptical cross-section shaft segment rotates in the vertical waist hole with the manual active shaft. The elliptical long side of the elliptical cam or the elliptical cross-section shaft segment rotates to the short side to support the vertical waist hole upward, the hanging rod goes down and puts down one end of the pawl, the ratchet on the manual driven shaft rotates synchronously, and the middle claw structure of the pawl hooks the locking ratchet, and the limited manual drive is in place. At this time, the manual drive cam is just in the state of pressing the driving crank arm pin shaft at the farthest end to prevent excessive rotation. In the closed state, the reset driving arm rotates downward with the driving crank arm, and the end of the reset pull rod is pulled and connected to the reset driving arm. The manual active shaft rotates in the opposite direction under the action of the manual limit reset spring through the manual limit swing arm, and the elliptical cam or the elliptical short side of the elliptical cross-section shaft segment rotates to the long side to support the vertical waist hole upward, so that the hanging rod drives the pawl to overcome the force of the reset spring, lift up and release the engagement with the ratchet, and synchronously drive the manual driven shaft to reverse.
[0012] When manual operation needs to be disconnected, press the reset wrench, and the reset drive shaft rotates to drive the reset pull plate to pull the reset pull rod through the reset adjustment column, and the reset pull rod pulls the reset drive arm. Under the restoring force of the tension spring, one end of the drive crank arm is quickly driven to rotate upward, thereby completing the disconnection operation. The rotation of the manual driven shaft tightens the swing arm through its end to rotate the tension seat. The two tension springs on the upper end of the tension seat ensure the positioning and tightening after rotation, so that the manual drive cam is stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the present invention;
[0014] Figure 2 for Figure 1 Right view;
[0015] Figure 3 for Figure 1 Medium AA view;
[0016] Figure 4 for Figure 1 Middle BB view;
[0017] Figure 5 for Figure 1 Middle C-direction view;
[0018] Figure 6 It is a schematic diagram of the structure of the permanent magnet mechanism of the present invention.
[0019] In the figure: vacuum circuit breaker mechanism 1, insulating pull rod 2, driving crank arm 3, crank arm shaft 4, permanent magnet driving rod 5, cylinder body 6, upper driving coil 7, lower driving coil 8, middle magnet ring structure 9, moving iron core 10, electromagnetic driving shaft 11, manual active shaft 12, elliptical shaft segment 13, hanging rod 14, vertical waist hole 15, pawl 16, ratchet 17, reset spring 18, manual driven shaft 19, manual driving cam 20, crank arm pin 21, reset driving arm 22, reset pull rod 23, reset pull plate 24, reset pull rod pin 25, reset driving shaft 26, driving guide groove 27, tensioning swing arm 28, tensioning seat 29, tensioning spring 30, tensioning spring 31, manual limit swing arm 32, manual limit column 33, manual limit reset spring 34, housing 35, manual driving sprocket set 36. DETAILED DESCRIPTION
[0020] The invention is further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1-6 As shown: a large current manual and electric integrated high-voltage vacuum permanent magnet circuit breaker, including a vacuum circuit breaker mechanism 1, an insulating pull rod 2, a driving crank arm 3, a crank arm shaft 4, a permanent magnet driving rod 5, a cylinder body 6, an upper driving coil 7, a lower driving coil 8, an intermediate magnet ring structure 9, a moving iron core 10, an electromagnetic driving shaft 11, a manual active shaft 12, an elliptical shaft segment 13, a hanging rod 14, a vertical waist hole 15, a pawl 16, a ratchet 17, a reset spring 18, a manual driven shaft 19, a manual driving cam 20, a crank arm pin 21, a reset driving arm 22, a reset pull rod 23, a reset pull plate 24, a reset pull rod pin 25, a reset driving shaft 26, a driving guide groove 27, a tensioning swing arm 28, a tensioning seat 29, a tensioning spring 30, a tensioning spring 31, a manual limit swing arm 32, a manual limit column 33, a manual limit reset spring 34, and a shell 35.
[0022] The permanent magnet mechanism is arranged in the housing 35, such as Figure 6 The permanent magnet mechanism includes a power control module, a cylinder body 6, an upper drive coil 7, a lower drive coil 8, an intermediate magnet ring structure 9, a moving iron core 10, and an electromagnetic drive shaft 11. The power control module is arranged in the shell, the power drive module is connected to the upper and lower drive coils 7 and 8 in the cylinder body 6, the intermediate magnet ring structure 9 is arranged between the upper and lower drive coils, the moving iron core 10 is connected to the electromagnetic drive shaft 11 and is in a lifting and lowering driving state in the upper drive coil, the intermediate magnet ring structure, and the lower drive coil, and the permanent magnet drive rod 5 is connected to the electromagnetic drive shaft below.
[0023] like Figure 4As shown, a driving guide groove 27 is provided on the permanent magnet driving rod 5, and the manual driven shaft 19 passes through the driving guide groove 27 and is connected in the outer shell. The manual driving cam 20 is sleeved on the manual driven shaft 19, and the lower end of the permanent magnet driving rod 5 is pinned to the front end of the driving crank arm 3 through the crank arm pin shaft 21, and the crank arm shaft 4 in the middle of the driving crank arm 3 is connected in the outer shell, and the rear end of the driving crank arm is hinged to the insulating pull rod 2 of the vacuum circuit breaker mechanism 1, and the crank arm pin shaft 21 is also connected to one end of the reset driving arm 22, and the other end of the reset driving arm 22 is connected to the reset pull rod pin 25, and the two ends of the reset pull rod pin 25 are connected to the lower ends of the two reset pull rods 23, and the reset pull rod can slide in the reset pull rod pin and the bottom of the reset pull rod is limited to prevent it from falling out, and the upper ends of the two reset pull rods 23 are connected to the two ends of the reset pull rod pin on the reset pull plate 24, and the reset pull plate 24 is hinged to the reset driving shaft 26 that passes through the outer shell, and the reset driving shaft 26 extends out of the outer shell and is connected to the reset wrench. Figure 1 The driving crank arm is connected to the lower end of the tensioning spring 31 through the connecting seat, and the upper end of the tensioning spring 31 is connected to the shell.
[0024] like Figure 2 As shown, the housing also passes through a manual driving shaft 12 which is parallel to the top of the manual driven shaft 19. The manual driving shaft 12 and the manual driven shaft 19 are connected and transmitted through a manual drive sprocket set 36. An elliptical shaft segment 13 with an elliptical cross-section at one end is provided on the manual driving shaft 12. The elliptical shaft segment 13 is hung in a vertical waist hole 15 of a hanging rod 14. The lower end of the hanging rod 14 is hinged to one end of a pawl 16. One end of the pawl 16 is also connected to the housing through a reset spring 18. The other end of the pawl 16 is hinged to the housing. A ratchet 17 corresponding to the pawl 16 is provided under the pawl 16, and the ratchet 17 is connected to the manual driven shaft 19.
[0025] like Figure 3 As shown, the manual active shaft 12 on the inner wall of the shell is connected to one end of a manual limit swing arm 32, and the other end of the manual limit swing arm 32 is connected to the upper end of a manual limit reset spring 34, and the lower end of the manual limit reset spring 34 is connected to the inner wall of the shell. A manual limit column 33 corresponding to the manual limit swing arm 32 is also provided on the inner wall of the shell.
[0026] like Figure 5 As shown, the inner end of the manual driven shaft 19 is connected to one end of the tensioning swing arm 28, and the other end of the tensioning swing arm 28 is hinged to the lower end of the tensioning seat 29. The lower ends of the two tensioning springs 30 are tightened on both sides of the upper end of the tensioning seat 29 respectively, and the upper ends of the two tensioning springs 30 are hooked in the outer shell.
Claims
1. A large current manual and electric integrated high voltage vacuum permanent magnet circuit breaker, comprising a permanent magnet mechanism, a vacuum circuit breaker mechanism and a manual drive mechanism arranged in a housing, the permanent magnet mechanism is connected to a permanent magnet drive rod below, one end of a driving crank arm is hinged below the permanent magnet drive rod, the middle part of the driving crank arm is connected to the housing through the crank arm shaft, and the other end of the driving crank arm is connected to the lower end of the insulating pull rod of the vacuum circuit breaker, characterized in that: The manual driving mechanism comprises a manual driving shaft, a manual driven shaft, a manual driving sprocket set, a manual driving cam, a hanging rod, a pawl, a ratchet, a reset spring, a tensioning spring, a tensioning seat, a tensioning swing arm, a tensioning spring, a reset wrench, a reset driving shaft, a reset pull plate, a reset pull rod, and a reset driving arm. The manual driving shaft, the manual driven shaft, and the reset driving shaft are connected to the outer shell in parallel with the crank arm shaft. The manual driving shaft and the manual driven shaft are connected to the manual driving sprocket set, and the manual driven shaft is connected to the manual driving cam, which is attached to one end of the driving crank arm; an elliptical cam is fixedly connected to the manual driving shaft or an elliptical cross-section shaft segment is set, and the elliptical cam or the elliptical shaft segment is connected to the vertical waist hole of the hanging rod, and the lower part of the hanging rod One end of the pawl is hinged to the end, and one end of the pawl is connected to the shell through a reset spring, and the other end of the pawl is hinged to the shell, and a ratchet connected to the manual driven shaft is correspondingly arranged below the middle of the pawl; the reset drive shaft is externally connected to a reset wrench, and the inner section of the reset drive shaft is hinged to the upper end of the reset pull plate, and the lower end of the reset pull plate is rotatably connected to the reset adjustment column, and the reset adjustment column is connected to the reset pull rod, and the reset pull rod is movably connected to one end of the reset drive arm, and the other end of the reset drive arm is connected to one end of the driving crank arm; one end of the tensioning swing arm is connected to the manual driven shaft, and the other end of the tensioning swing arm is hinged to the lower end of the tensioning seat, and the upper end of the tensioning seat is hooked to the lower end of the tensioning spring, and the upper end of the tensioning spring is hooked in the shell; the lower end of the tensioning spring is hooked to the crank arm shaft, and the upper end is hooked in the shell.
2. A large current manual and electric integrated high voltage vacuum permanent magnet circuit breaker according to claim 1, characterized in that: The lower ends of two tension springs are hooked at both sides of the upper end of the tension seat respectively, and the upper ends of the two tension springs are hooked in the shell.
3. The large current manual and electric integrated high voltage vacuum permanent magnet circuit breaker according to claim 1 is characterized in that: A driving guide groove is arranged on the permanent magnetic driving rod, a manual driven shaft passes through the driving guide groove, and a manual driving cam is fitted on the outer side of the hinge pin shaft between the driving crank arm and the permanent magnetic driving rod.
4. A large current manual and electric integrated high voltage vacuum permanent magnet circuit breaker according to claim 3, characterized in that: The driving crank arm and the permanent magnet driving rod hinge pin are connected through the other end of the reset driving arm.
5. The large current manual and electric integrated high voltage vacuum permanent magnet circuit breaker according to claim 1 is characterized in that: It also includes a manual limit swing arm, a manual limit column, and a manual limit reset spring. The manual active shaft is connected to the upper end of the manual limit swing arm. The shell is provided with a manual limit column for limiting excessive rotation of the manual limit swing arm. The lower end of the manual limit swing arm is connected to the shell via a manual limit reset spring.
6. A large current manual and electric integrated high voltage vacuum permanent magnet circuit breaker according to claim 1, characterized in that: The permanent magnet mechanism includes a power control module, a cylinder body, an upper drive coil, a lower drive coil, an intermediate magnet ring structure, a moving iron core, and an electromagnetic drive shaft. The power control module is arranged in the shell, the power drive module is connected to the upper and lower drive coils in the cylinder body, the intermediate magnet ring structure is arranged between the upper and lower drive coils, the moving iron core is connected to the electromagnetic drive shaft and is in a lifting and lowering driving state in the upper drive coil, the intermediate magnet ring structure, and the lower drive coil, and the permanent magnet drive rod is connected to the bottom of the electromagnetic drive shaft.