The present disclosure provides a transfer switching equipment, comprising a first switch set and a second switch set. The transfer switching equipment is configured in a way that during the switching from a closed state of one of the first switch set and the second switch set to a closed state of t
The present disclosure provides a transfer switching equipment, comprising a first switch set and a second switch set. The transfer switching equipment is configured in a way that during the switching from a closed state of one of the first switch set and the second switch set to a closed state of the other of the first switch set and the second switch set, there is a state in which the neutral poles of the first switch set and the neutral pole of the second switch set are closed at the same time while all phase poles of the first switch set and all phase poles of the second switch set are all opened. The transfer switching equipment has a simple and reliable structure and occupies a small space and can provide continuous voltage with high-quality during switching the power supply.
대표청구항▼
1. A transfer switching equipment, comprising: a first switch set for connecting a first power supply to a load, comprising a neutral pole and at least one phase pole, wherein the neutral pole and each of said at least one phase pole of the first switch set respectively comprise a movable contact an
1. A transfer switching equipment, comprising: a first switch set for connecting a first power supply to a load, comprising a neutral pole and at least one phase pole, wherein the neutral pole and each of said at least one phase pole of the first switch set respectively comprise a movable contact and a stationary contact, and the neutral pole of the first switch set comprises a first locking mechanism and a first linkage member;a second switch set for connecting a second power supply to the load, comprising a neutral pole and at least one phase pole, wherein the neutral pole and each of said at least one phase pole of the second switch set respectively comprise a movable contact and a stationary contact, and the neutral pole of the second switch set comprises a second locking mechanism and a second linkage member; andcharacterized in that the transfer switching equipment is configured in a way that with aid of the first locking mechanism, the second locking mechanism, the first linkage member and the second linkage member, during the switching from a closed state of one of the first switch set and the second switch set to a closed state of the other of the first switch set and the second switch set, there is a state in which the neutral pole of the first switch set and the neutral pole of the second switch set are closed at the same time while all phase poles of the first switch set and all phase poles of the second switch set are all opened;further comprising a first drive mechanism and a second drive mechanism, wherein the first drive mechanism comprises a first drive shaft, and the second drive mechanism comprises a second drive shaft;wherein, the first locking mechanism comprises: a first link rotatably arranged on the first drive shaft, and a first U-shaped link hinged between the first link and the movable contact of the neutral pole of the first switch set;the second locking mechanism comprises: a second link rotatably arranged on the second drive shaft, and a second U-shaped link hinged between the second link and the movable contact of the neutral pole of the second switch set. 2. The transfer switching equipment according to claim 1, wherein the first drive mechanism is configured to drive the movable contacts of the neutral pole and the phase pole of the first switch set to close and drive the movable contact of the phase pole of the first switch set to open; and the second drive mechanism is configured to drive the movable contacts of the neutral pole and the phase pole of the second switch set to close and drive the movable contact of the phase pole of the second switch set to open. 3. The transfer switching equipment according to claim 2, wherein, when the movable contact of the phase pole of the first switch set is closed, the first locking mechanism is at a locked position to lock the movable contact of the neutral pole of the first switch set to a closed position when the first drive mechanism drives the movable contact of the phase pole of the first switch set to open;when the movable contact of the phase pole of the second switch set is closed, the second locking mechanism is at a locked position to lock the movable contact of the neutral pole of the second switch set to a closed position when the second drive mechanism drives the movable contact of the phase pole of the second switch set to open;the first linkage member is configured to be driven by the second drive mechanism to release the locking of the first locking mechanism to the movable contact of the neutral pole of the first switch set so that the movable contact of the neutral pole of the first switch set is opened; andthe second linkage member is configured to be driven by the first drive mechanism to release the locking of the second locking mechanism to the movable contact of the neutral pole of the second switch set so that the movable contact of the neutral pole of the second switch set is opened. 4. The transfer switching equipment according to claim 3, wherein, a first cam is fixedly disposed on the first drive shaft, rotation of the first cam driving the movable contact of the neutral pole of the first switch set to move to close; a second cam is fixedly disposed on the second drive shaft, rotation of the second cam driving the movable contact of the neutral pole of the second switch set to move to close. 5. The transfer switching equipment according to claim 4, wherein, the first linkage member is hinged between the first locking mechanism and the second cam; andthe second linkage member is hinged between the second locking mechanism and the first cam;wherein the first U-shaped link has a first stop wall which is configured to block the pivoting of the first link relative to the first U-shaped link when the movable contact of the neutral pole of the first switch set is at the closed position and disengages with the first cam, and the second U-shaped link has a second stop wall which is configured to block the pivoting of the second link relative to the second U-shaped link when the movable contact of the neutral pole of the second switch set is at the closed position and disengages with the second cam. 6. The transfer switching equipment according to claim 5, wherein, the first linkage member is hinged to any one of the first link, the first U-shaped link and a pivot between the first link and the first U-shaped link, so that the first linkage member can be driven by rotation of the second cam to release the blocking exerted by the first stop wall to the pivoting of the first U-shaped link; the second linkage member is hinged to any one of the second link, the second U-shaped link and a pivot between the second link and the second U-shaped link, so that the second linkage member can be driven by rotation of the first cam to release the blocking exerted by the second stop wall to the pivoting of the second U-shaped link. 7. The transfer switching equipment according to claim 6, wherein, the first linkage member and the second linkage member are a pull rod, belt, cord or chain, which, by providing a pull force respectively to the first locking mechanism and the second locking mechanism, release the blocking of the first stop wall to the pivoting of the first U-shaped link and the blocking of the second stop wall to the pivoting of the second U-shaped link. 8. The transfer switching equipment according to claim 6, wherein, the first linkage member and the second linkage member are push rods which, by providing a push force respectively to the first locking mechanism and the second locking mechanism, release the blocking of the first stop wall to the pivoting of the first U-shaped link and the blocking of the second stop wall to the pivoting of the second U-shaped link. 9. The transfer switching equipment according to claim 3, wherein the transfer switching equipment further comprises a first stabilizing spring connected to the first locking mechanism which is configured to preload for the first locking mechanism to make it remain stable when at the locked position; and a second stabilizing spring connected to the second locking mechanism which is configured to preload for the second locking mechanism to make it remain stable when at the locked position. 10. The transfer switching equipment according to claim 4, wherein the first linkage member is engaged with the second cam or the first locking mechanism via a pin and a slot so that after the second cam rotates to a position enabling the movable contact of the neutral pole of the second switch set to close, further rotation of the second cam drives the first linkage member to move to release the first locking mechanism from its locked position; and the second linkage member is engaged with the first cam or the second locking mechanism via a pin and a slot so that after the first cam rotates to a position enabling the movable contact of the neutral pole of the first switch set to close, further rotation of the first cam drives the second linkage member to move to release the second locking mechanism from its locked position. 11. The transfer switching equipment according to claim 4, wherein the first drive shaft is configured to rotate to a position enabling the movable contact of the phase pole of the first switch set to close, only after rotating to a position enabling the first cam to drive the movable contact of the neutral pole of the first switch set to close; and the second drive shaft is configured to rotate to a position enabling the movable contact of the phase pole of the second switch set to close, only after rotating to a position enabling the second cam to drive the movable contact of the neutral pole of the second switch set to close. 12. The transfer switching equipment according to claim 3, wherein the transfer switching equipment further comprises a first return spring configured to drive the first drive mechanism to drive the movable contact of the neutral pole of the first switch set to open after the first drive mechanism drives the movable contact of the phase pole of the first switch set to open and the first locking mechanism is released from the locked position; and a second return spring configured to drive the second drive mechanism to drive the movable contact of the neutral pole of the second switch set to open after the second drive mechanism drives the movable contact of the phase pole of the second switch set to open and after the second locking mechanism is released from the locked position. 13. The transfer switching equipment according to claim 4, wherein the movable contact of the neutral pole of the first switch set is provided with a first roller to engage with the first cam; the movable contact of the neutral pole of the second switch set is provided with a second roller to engage with the second cam.
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이 특허에 인용된 특허 (5)
Castenschiold Rene (New Vernon NJ) Andersen John P. (Hackettstown NJ), Automatic transfer switch.
Becker James A. (Grafton WI) Freitag Lawrence F. (Bayside WI) Kussy Frank W. (Randallstown MD), Electric switch with counteracting electro-electro-dynamic forces.
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