Mechanical mutual exclusion mechanism and dual-power change-over switch

Abstract

The invention discloses a mechanical mutual exclusion mechanism which comprises a shell, a first driving plummer block, a second driving plummer block, a first connecting rod mechanism and a second connecting rod mechanism, the first driving plummer block comprises a first flat bottom table and a first special-shaped shaft, the second driving plummer block comprises a second flat bottom table and a second special-shaped shaft, and when the first special-shaped shaft is driven by external force, the second special-shaped shaft is driven by the first flat bottom table and the second special-shaped shaft. The first driving plummer block rotates in the driving direction, the second connecting rod mechanism is driven by the first driving plummer block to rotate in the direction opposite to the external force driving direction and transmits power, and when the first driving plummer block returns to the initial position, the second connecting rod mechanism resets; the invention further discloses a dual-power-supply change-over switch applying the mechanical mutual exclusion mechanism, the dual-power-supply change-over switch comprises a first circuit breaker, a second circuit breaker, a first electric driving mechanism, a second electric driving mechanism, a control mechanism and the like, when the first circuit breaker is abnormal, the control mechanism controls the second electric driving mechanism to drive the second circuit breaker to be switched on, and meanwhile, the second circuit breaker drives the second special-shaped shaft to rotate; the first connecting rod mechanism is triggered to rotate, so that the first circuit breaker is switched off to cut off the first power supply.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and in particular to a mechanical mutual exclusion mechanism and a dual power supply transfer switch. Background Technology

[0002] A dual-power transfer switch is an electrical device used to switch between two load power sources. When one power source experiences an abnormality, the transfer switch quickly cuts off the power supply and simultaneously connects the backup power source, ensuring that the load's operating status is not affected by the abnormality of one power source. Therefore, the dual-power switching process is usually carried out under load. However, this generates a high-energy electric arc at the switching point. If the transfer switch itself does not have arc-extinguishing capabilities, it will be damaged by the arc, potentially even causing a fire. Thus, dual-power transfer switches based on circuit breakers with arc-extinguishing capabilities have been developed. The operating status of the two circuit breakers is switched via a device mounted on the circuit breaker handle. However, the state of the circuit breaker handle cannot fully reflect the opening and closing status of the circuit breaker contacts, and the opening and closing of one circuit breaker cannot be effectively synchronized. There may be situations where both power sources supply power to the load simultaneously. Therefore, how to provide a device that ensures the synchronous opening of one circuit breaker and the closing of the other, and a dual-circuit breaker power transfer switch using such a device, has become a pressing technical problem for those skilled in the art. Summary of the Invention

[0003] One objective of this invention is to provide a mechanical mutual exclusion mechanism that synchronously transmits a force input in one planar direction to an output in another planar direction, thereby enabling synchronous linkage between the mechanisms connected on both sides of the mechanical mutual exclusion mechanism.

[0004] Another objective of this invention is to provide a dual power supply transfer switch that uses two specific circuit breakers with a mechanical mutual exclusion mechanism to synchronously convert the closing force of one circuit breaker into the opening force of the other circuit breaker after passing through the mechanical mutual exclusion mechanism. This allows one circuit breaker to close while the other circuit breaker opens, ensuring that at most one of the dual power supplies connected to the circuit breaker can provide power.

[0005] A mechanical mutual exclusion mechanism, comprising: The housing includes an upper housing and a lower housing. The upper housing has a first through hole and a first through groove, and the lower housing has a second through hole and a second through groove. The upper housing also has a first fixed shaft inside. The first drive shaft platform includes a first flat bottom platform and a first irregular shaft. The first flat bottom platform is located inside the housing and has a first annular protrusion. The first irregular shaft passes through the first through hole. The second drive shaft platform includes a second flat bottom platform and a second irregular shaft. The second flat bottom platform is located inside the housing and has a second annular protrusion. The second irregular shaft passes through the second through hole. The first linkage mechanism includes a first force-receiving part, a first rotating shaft part, a first hook part, and a first reset part. The first force-receiving part and the second drive shaft are in clearance fit. The first rotating shaft part is provided with a first shaft hole, which is in clearance fit with the first fixed shaft. The first force-receiving part and the first rotating shaft part are stacked. The first hook part is located at the second through groove. The first reset part is provided with a first spring, one end of which is connected to the first reset part, and the other end is fixed to the housing. The second linkage mechanism includes a second force-receiving part, a second rotating shaft part, a second hook part, and a second reset part. The second force-receiving part and the first drive shaft are in clearance fit. The second rotating shaft part is provided with a second shaft hole, which is in clearance fit with the first fixed shaft. The second force-receiving part and the second rotating shaft part are stacked. The second hook part is located at the first through groove. The second reset part is provided with a second spring, one end of which is connected to the second reset part, and the other end is fixed to the housing. In the initial state, the first spring provides an initial force to the first linkage mechanism, so that the second drive shaft is in the initial position and is in clearance fit with the first linkage mechanism; the second spring provides an initial force to the second linkage mechanism, so that the first drive shaft is in the initial position and is in clearance fit with the second linkage mechanism. When the first irregular shaft is driven by an external force, the first drive shaft table rotates in the driving direction. The second linkage mechanism is driven by the driving pressure of the first drive shaft table to rotate in the opposite direction of the external force with the first fixed shaft as the center. During the rotation, the second hook part transmits the driving pressure and rotates at the first through slot. When the first drive shaft table returns to the initial position, the second linkage mechanism resets under the action of the second spring. When the second irregular shaft is driven by an external force, the second drive shaft table rotates in the driving direction. The first linkage mechanism is driven by the driving pressure of the second drive shaft table to rotate in the opposite direction of the external force with the first fixed shaft as the center. During the rotation, the first hook part transmits the driving pressure and rotates at the second through slot. When the second drive shaft table returns to the initial position, the first linkage mechanism resets under the action of the first spring.

[0006] Furthermore, the housing is also provided with a first limiting member, which is used to limit the positions of the first drive shaft stage and the second drive shaft stage; Furthermore, a mechanical mutual exclusion mechanism also includes: An upper through hole is provided on the housing; An upper through groove is provided on the housing; A second fixed shaft is provided inside the housing; A stepped shaft assembly includes an outer large head, a middle thin shaft portion, and an inner large head. The outer large head is located outside the housing. One end of the middle thin shaft portion is connected to the outer large head, and the other end passes through the upper through hole and is connected to the inner large head. A snap-fit ​​assembly includes a top shaft, a snap-fit ​​spring, an opening, and a snap-fit ​​part. One end of the top shaft abuts against the housing, and the other end passes through the snap-fit ​​spring and connects to the opening. The opening is located at the position of the upper through groove, and the snap-fit ​​part is located at the front end of the opening. A lever component has a lever shaft hole in the middle, which is clearance-fitted with the second fixed shaft. One end of the lever component is located between the first hook portion and the second hook portion, and maintains a certain gap with the first hook portion and the second hook portion. The other end of the lever component is located at the lower end of the inner large head. In the first state, the snap-fit ​​part snaps onto the inner large head; When the outer large head is squeezed by external force, the stepped shaft assembly moves inward, the locking assembly locks the middle thin shaft part, and at the same time, the inner large head hits one end of the lever, and the other end of the lever simultaneously lifts the first hook part and the second hook part. When external force is used to lift the opening through the upper through slot, the stepped shaft assembly can be pulled outwards, and the snap-fit ​​assembly snaps into the inner large head.

[0007] A dual power transfer switch using the above-mentioned mechanical mutual exclusion mechanism includes a first circuit breaker and a second circuit breaker. The first circuit breaker is connected to a first power source and includes a first housing, a first handle, and a first tripping mechanism. The second circuit breaker is connected to a second power source and includes a second housing, a second handle, and a second tripping mechanism. The first handle has a first irregularly shaped hole; A first tripping groove is provided on the first housing; The second handle has a second irregularly shaped hole; A second tripping groove is provided on the second housing; The aforementioned mechanical mutual exclusion mechanism has a clearance fit between the first irregular shaft and the first irregular hole, and a clearance fit between the second irregular shaft and the second irregular hole; The first tripping lever has one end passing through the first tripping groove and connected to the first tripping mechanism, and the other end passing through the second through groove and connected to the first hook part, for transmitting the power of the first hook part to the first tripping mechanism; The second release lever has one end passing through the second release groove and connecting to the second release mechanism, and the other end passing through the first through groove and connecting to the second hook part, for transmitting the power of the second hook part to the second release mechanism. The first electric drive mechanism has a first electric drive shaft extending from one end, and the first electric drive shaft and the first irregular hole are in clearance fit. The second electric drive mechanism has a second electric drive shaft extending from one end, and the second electric drive shaft and the second irregular hole are clearance-fitted. The control mechanism is electrically connected to both the first electric drive mechanism and the second electric drive mechanism. It is used to collect circuit data of the first circuit breaker and the second circuit breaker, and to send control signals to the first electric drive mechanism and / or the second electric drive mechanism based on the circuit data. During operation, the first circuit breaker closes, and the circuit is powered by the first power supply. When the control mechanism detects an abnormality in the circuit data of the first circuit breaker, the control mechanism sends a closing signal to the second electric drive mechanism. The second electric drive mechanism drives the second circuit breaker to close, and the circuit is powered by the second power supply. At the same time, the second circuit breaker drives the second irregular shaft to rotate, which causes the first linkage mechanism to rotate. The first hook part pulls the first tripping mechanism through the first tripping rod, causing the first circuit breaker to trip and cut off the first power supply.

[0008] Furthermore, a dual-power transfer switch also includes: an emergency stop switch and the stepped shaft assembly, for simultaneously cutting off the first power supply and the second power supply in an emergency; and a reset switch connected to the snap-fit ​​assembly for resetting the emergency stop switch.

[0009] Furthermore, a dual power supply transfer switch also includes: a transfer switch for setting automatic and manual switching between dual power supplies; The first handle latching component is latched onto the first handle and is used to push the first handle to open or close the first circuit breaker. The second handle latch is latched onto the second handle and is used to push the second handle to open or close the second circuit breaker. A handle assembly includes a handle and a middle component, the handle and the middle component are connected, the handle is used for manually switching the on and off of dual power supplies, the middle component is engaged with a first handle latching member for transmission, and the middle component is engaged with a second handle latching member for transmission. After switching to manual mode via the changeover switch, when manually switching from the first power source to the second power source, the handle is pulled to move the intermediate component, which in turn moves the first handle latch, causing the first circuit breaker to trip and disconnect the first power source. Simultaneously, the second handle latch moves, causing the second circuit breaker to close and connect to the second power source.

[0010] In summary, due to the adoption of the above technical solution, this application includes at least the following beneficial effects: Firstly, when the first circuit breaker drives the first irregular shaft to close, the first drive shaft platform rotates in the driving direction. The second linkage mechanism, driven by the driving pressure of the first drive shaft platform, rotates in the opposite direction around the first fixed shaft. During rotation, the second hook part transmits the driving pressure and drives the second tripping rod to rotate at the first through slot, causing the second tripping mechanism connected to the second tripping rod to trip, and the second circuit breaker trips, thus ensuring that one circuit breaker closes while the other trips. Secondly, in an emergency, the operator... Pressing the emergency stop switch will trigger the step shaft assembly to activate the lever assembly, causing the first and second trip levers to rotate simultaneously. This rotation of the first and second trip levers will disengage both the first and second trip mechanisms, resulting in the simultaneous tripping of both circuit breakers. Thirdly, the tripping force of the circuit breaker is directly applied to the tripping mechanism, ensuring that the tripping is not interfered with by components such as the handle assembly. Fourthly, the fit between the irregular hole and the irregular shaft on the circuit breaker handle ensures more stable opening and closing of the circuit breaker. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the internal structure of a mechanical mutual exclusion mechanism according to the present invention; Figure 2 This is an exploded view of the structure of a mechanical mutual exclusion mechanism according to the present invention; Figure 3 This is a schematic diagram of the first linkage mechanism of a mechanical mutual exclusion mechanism according to the present invention; Figure 4 This is a schematic diagram of the installation structure of a dual power supply transfer switch according to the present invention; Figure 5 This is an exploded view of the structure of a dual power supply transfer switch according to the present invention; Explanation of reference numerals in the attached drawings: 1. Mechanical mutual exclusion mechanism; 11. Housing; 111. Upper housing; 1111. First through hole; 1112. First through groove; 1113. First fixed shaft; 112. Lower housing; 1121. First through hole; 1122. Second through groove; 113. Upper end through hole; 114. Upper end through groove; 115. Second fixed shaft; 12. First drive shaft platform; 121. First flat bottom platform; 1211. First annular protrusion; 122. First irregular shaft; 13. Second drive shaft. 131. Shaft platform; 1311. Second flat bottom platform; 1311. Second annular protrusion; 132. Second irregular shaft; 14. First linkage mechanism; 141. First force-bearing part; 142. First rotating shaft part; 1421. First shaft hole; 143. First hook part; 144. First reset part; 1441. First spring; 15. Second linkage mechanism; 151. Second force-bearing part; 152. Second rotating shaft part; 1521. Second shaft hole; 153. Second hook part; 154. Second reset part; 1 541. Second spring; 16. First limiting member; 17. Stepped shaft assembly; 171. Outer large head; 172. Middle thin shaft part; 173. Inner large head; 18. Snap-fit ​​assembly; 181. Top shaft; 182. Snap-fit ​​spring; 183. Opening; 184. Snap-fit ​​part; 19. Lever; 191. Lever shaft hole; 2. First circuit breaker; 21. First handle; 211. First irregular hole; 22. First housing; 221. First tripping groove; 23. First tripping mechanism; 3 31. Second circuit breaker; 32. Second handle; 33. Second irregular hole; 34. Second housing; 35. Second trip slot; 36. Second trip mechanism; A. First trip rod; B. Second trip rod; 4. First electric drive mechanism; 41. First electric drive shaft; 5. Second electric drive mechanism; 51. Second electric drive shaft; N. Control mechanism; 6. Emergency stop switch; 7. Reset switch; C. First handle latch; D. Second handle latch; 8. Handle assembly; 81. Handle; 82. Intermediate component. Detailed Implementation

[0012] 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.

[0013] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms "upper," "lower," "left," "right," "middle," "first," and "second" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1-3 As shown.

[0016] A mechanical mutual exclusion mechanism, comprising: The housing 11 includes an upper housing 111 and a lower housing 112. The upper housing 111 is provided with a first through hole 1111 and a first through groove 1112. The lower housing 112 is provided with a second through hole 1121 and a second through groove 1122. The upper housing 111 is also provided with a first fixed shaft 1113 inside.

[0017] The first drive shaft platform 12 includes a first flat bottom platform 121 and a first irregular shaft 122. The first flat bottom platform 121 is located inside the housing 11 and has a first annular protrusion 1211. The first irregular shaft 122 passes through the first through hole 1111.

[0018] The second drive shaft platform 13 includes a second flat bottom platform 131 and a second irregular shaft 132. The second flat bottom platform 131 is located inside the housing 11 and has a second annular protrusion 1311. The second irregular shaft 132 passes through the second through hole 1121.

[0019] In one specific implementation, the first drive shaft platform 12 and the second drive shaft platform 13 are arranged back to back, the first flat bottom platform 121 and the second flat bottom platform 131 are fitted together with a gap, and the housing 11 is also provided with a first limiting member 16, which is used to limit the position of the first drive shaft platform 12 and the second drive shaft platform 13.

[0020] like Figure 3 As shown.

[0021] The first linkage mechanism 14 includes a first force-receiving part 141, a first rotating shaft part 142, a first hook part 143, and a first reset part 144. The first force-receiving part 141 and the second drive shaft platform 13 are in clearance fit. The first rotating shaft part 142 is provided with a first shaft hole 1421, which is in clearance fit with the first fixed shaft 1113. The first force-receiving part 141 and the first rotating shaft part 142 are stacked. The first hook part 143 is located at the second through groove 1122. The first reset part 144 is provided with a first spring 1441, one end of which is connected to the first reset part 144, and the other end is fixed to the housing 11.

[0022] Under normal conditions, the second drive shaft platform 13 and the first linkage mechanism 14 are in clearance fit. However, when the second drive shaft platform 13 is driven by an external force, the second annular protrusion 1311 rotates to transmit the driving force to the first force-bearing part 141, causing the first linkage mechanism 14 to rotate around the first fixed shaft 1113.

[0023] The second linkage mechanism 15 includes a second force-receiving part 151, a second rotating shaft part 152, a second hook part 153, and a second reset part 154. The second force-receiving part 151 and the first drive shaft platform 12 are in clearance fit. The second rotating shaft part 152 is provided with a second shaft hole 1521, which is in clearance fit with the first fixed shaft 1113. The second force-receiving part 151 and the second rotating shaft part 152 are stacked. The second hook part 153 is located at the first through groove 1112. The second reset part 154 is provided with a second spring 1541, one end of which is connected to the second reset part 154, and the other end is fixed to the housing 11.

[0024] In the initial state, the first spring 1441 provides an initial force to the first linkage mechanism 14, so that the second drive shaft platform 13 is in the initial position and is in clearance fit with the first linkage mechanism 14. The second spring 1541 provides an initial force to the second linkage mechanism 15, so that the first drive shaft platform 12 is in the initial position and is in clearance fit with the second linkage mechanism 15.

[0025] When the first irregular shaft 122 is driven by an external force, the first drive shaft platform 12 rotates in the driving direction. The second linkage mechanism 15 is driven by the driving pressure of the first drive shaft platform 12 to rotate in the opposite direction of the external force with the first fixed shaft 1113 as the center. During the rotation, the second hook part 153 transmits the driving pressure and rotates at the first through groove 1112. When the first drive shaft platform 12 returns to the initial position, the second linkage mechanism 15 resets under the action of the second spring 1541.

[0026] When the second irregular shaft 132 is driven by an external force, the second drive shaft platform 13 rotates in the driving direction. The first linkage mechanism 14 is driven by the driving pressure of the second drive shaft platform 13 to rotate in the opposite direction of the external force with the first fixed shaft 1113 as the center. During the rotation, the first hook part 143 transmits the driving pressure and rotates at the second through slot 1122. When the second drive shaft platform 13 returns to the initial position, the first linkage mechanism 14 resets under the action of the first spring 1441.

[0027] In a specific embodiment, the hook portion of the first linkage mechanism 14 and the second linkage mechanism 15 both include a lower hook and an upper hook. The lower hook portion is located at the lower end of the first and / or second through slot. When the linkage mechanism is driven by an external force, the lower hook portion has a longer travel at the through slot position. Therefore, the lower hook portion is used to transmit force to the external component passing through the through slot.

[0028] In one specific embodiment, a mechanical mutual exclusion mechanism further includes an upper through hole 113 provided on the housing. It should be noted that the upper through hole 113 can be provided on the upper housing 111, or on the lower housing 112, or a portion can be provided on both the upper housing 111 and the lower housing 112. The upper through hole 113 is formed when the upper housing 111 and the lower housing 112 are assembled together.

[0029] An upper through groove 114 is provided on the housing 11. It should be noted that the upper through groove 114 can be formed on the upper housing 111, or on the lower housing 112, or a portion can be formed on both the upper housing 111 and the lower housing 112. The upper through groove 114 is formed when the upper housing 111 and the lower housing 112 are assembled together.

[0030] A second fixed shaft 115 is provided inside the housing 11.

[0031] The stepped shaft assembly 17 includes an outer large head 171, a middle thin shaft portion 172, and an inner large head 173. The outer large head 171 is located outside the housing 11. One end of the middle thin shaft portion 172 is connected to the outer large head 171, and the other end passes through the upper through hole 113 and is connected to the inner large head 173. It should be noted that, in a specific embodiment, the front end of the inner large head 173 is a conical structure.

[0032] The snap-fit ​​assembly 18 includes a top shaft 181, a snap-fit ​​spring 182, an opening 183, and a snap-fit ​​part 184. One end of the top shaft 181 rests on the housing 11, and the other end passes through the snap-fit ​​spring 182 and connects to the opening 183. The opening 183 is located at the position of the upper through groove 114, and the snap-fit ​​part 184 is located at the front end of the opening 183.

[0033] Lever 19 has a lever shaft hole 191 in the middle, the lever shaft hole 191 and the second fixed shaft 115 are in clearance fit, one end of the lever 19 is located between the first hook part 143 and the second hook part 153, and maintains a certain gap with the first hook part 143 and the second hook part 153, and the other end of the lever 19 is located at the lower end of the inner head 173; In the first state, the snap-fit ​​part 184 snaps onto the inner large head 173; when the outer large head 171 is squeezed by external force, the stepped shaft assembly 17 moves inward, the snap-fit ​​assembly 18 snaps the middle thin shaft part 172, and at the same time, the inner large head 173 hits one end of the lever 19, and the other end of the lever 19 simultaneously lifts the first hook part 143 and the second hook part 153.

[0034] When an external force is used to lift the opening 183 through the upper through slot 114, the stepped shaft assembly 17 can be pulled outwards, and the snap-fit ​​assembly 18 snaps into the inner large head 173.

[0035] The present invention also includes a dual power transfer switch using the above-mentioned mechanical mutual exclusion mechanism, including a first circuit breaker 2 and a second circuit breaker 3. The first circuit breaker 2 is connected to a first power source (not shown) and includes a first handle 21, a first housing 22, and a first tripping mechanism 23. The second circuit breaker 3 is connected to a second power source (not shown) and includes a second handle 31, a second housing 32, and a second tripping mechanism 33. It should be noted that the dual power transfer switch is connected to two power sources. Typically, one power source is the working power source and the other is the backup power source. During normal operation, the working power source provides power. When the working power source fails or causes a power outage, the dual power transfer switch cuts off the working power source and simultaneously connects the backup power source to continuously supply power to the load.

[0036] The first handle 21 is provided with a first irregular hole 211.

[0037] The first housing 22 has a first tripping groove 221.

[0038] The second handle 31 is provided with a second irregular hole 311.

[0039] The second housing 32 has a second tripping groove 321.

[0040] The aforementioned mechanical mutual exclusion mechanism 1 has a first irregular shaft 122 and a first irregular hole 211 in clearance fit, and a second irregular shaft 132 and a second irregular hole 311 in clearance fit.

[0041] The first release lever A has one end passing through the first release groove 221 and connected to the first release mechanism 23, and the other end passing through the second through groove 1122 and connected to the first hook part 143, for transmitting the power of the first hook part 143 to the first release mechanism 23.

[0042] The second release lever B has one end passing through the second release groove 321 and connecting to the second release mechanism 33, and the other end passing through the first through groove 1112 and connecting to the second hook part 153, for transmitting the power of the second hook part 153 to the second release mechanism 33.

[0043] It should be noted that the first trip lever A and the second trip lever B are intermediate components connecting the mechanical mutual exclusion mechanism 1 and the first circuit breaker 2 and the second circuit breaker 3. In a specific embodiment, the first trip lever A and / or the second trip lever B are part of the first linkage mechanism 14 and / or the second linkage mechanism 15.

[0044] The first electric drive mechanism 4 has a first electric drive shaft 41 extending from one end, and the first electric drive shaft 41 and the first irregular hole 211 are in clearance fit. The second electric drive mechanism 5 has a second electric drive shaft 51 extending from one end, and the second electric drive shaft 51 and the second irregular shape 311 are in clearance fit. The control mechanism N is electrically connected to both the first electric drive mechanism 4 and the second electric drive mechanism 5. It is used to collect circuit data of the first circuit breaker 2 and the second circuit breaker 3, and to send control signals to the first electric drive mechanism 4 and / or the second electric drive mechanism 5 according to the circuit data. During operation, the first circuit breaker 2 closes, and the circuit is powered by the first power supply. When the control mechanism N detects an abnormality in the circuit data of the first circuit breaker 2, the control mechanism N sends a closing signal to the second electric drive mechanism 5. The second electric drive mechanism 5 drives the second circuit breaker 3 to close, and the circuit is powered by the second power supply. At the same time, the second circuit breaker 3 drives the second irregular shaft 132 to rotate, which causes the first linkage mechanism 14 to rotate. The first hook part 143 pulls the first tripping mechanism 23 through the first tripping rod A, causing the first circuit breaker 2 to trip and cut off the first power supply.

[0045] It should be noted that, in one specific embodiment, the dual power supply transfer switch further includes: an emergency stop switch 6, which is clearance-fitted with the stepped shaft assembly 17, for simultaneously cutting off the first power supply and the second power supply in an emergency; and a reset switch 7, which is connected to the snap-fit ​​assembly 18, for resetting the emergency stop switch 6.

[0046] In an emergency, after the user presses the emergency stop switch 6, the stepped shaft assembly 17 moves inward under the pressure of the emergency stop switch 6. Its inner large head 173 presses down on one end of the lever 19, causing the other end of the lever 19 to tilt upward as it rotates around the second fixed shaft 115. Simultaneously, this lifts the first hook portion 143 and the second hook portion 153 upward. The first release lever A connected to the first hook portion 143 and the second release lever B connected to the second hook portion 153 move upward. At the same time, the first release lever A... The force is transferred to the first tripping mechanism 23, causing the first circuit breaker 2 to trip. The second tripping lever B transfers the upward force to the second tripping mechanism 33, causing the second circuit breaker 3 to trip. Furthermore, when the stepped shaft assembly 17 moves inward, the locking assembly 18 locks the middle thin shaft portion 172 of the stepped shaft assembly 17. It should be noted that after the middle thin shaft portion 172 of the stepped shaft assembly 17 is locked by the locking assembly 18, neither the first circuit breaker 2 nor the second circuit breaker 3 can perform a closing operation.

[0047] When an emergency reset is required, the user presses the reset switch 7 and inserts it into the opening 183 of the snap-fit ​​assembly 18 to loosen the snap-fit ​​of the intermediate thin shaft 172 by moving the snap-fit ​​part 184. At the same time, under the action of the first spring 1441 and the second spring 1541, the first hook part 143 and the second hook part 153 press down on one end of the lever 19, causing the lever 19 to rotate around the second fixed shaft 115 and lift the other end of the stepped shaft assembly 17 upward. Meanwhile, the snap-fit ​​assembly 18 snaps onto the inner large head 173, and the inner large head 173 and one end of the lever 19 maintain a certain gap. At this time, the dual power supply changeover switch is reset, and the user can operate the first circuit breaker 2 or the second circuit breaker 3 to close and operate normally.

[0048] It should be further noted that, in one specific embodiment, the dual power supply transfer switch also includes: a transfer switch (not shown) for setting automatic and manual dual power supply transfer; The first handle latching component C is latched onto the first handle 21 and is used to push the first handle 21 to open or close the first circuit breaker 2. It should be noted that, in a specific embodiment, the first handle latching component C includes a rack and pinion structure for power transmission. The second handle latching member D is latched onto the second handle 31 and is used to push the second handle 31 to open or close the second circuit breaker 3. It should be noted that, in a specific embodiment, the first handle latching member C includes a rack and pinion structure for power transmission. The handle assembly 8 includes a handle 81 and an intermediate part 82, which are connected. The handle 81 is used to manually switch the on and off of the dual power supply. The intermediate part 82 is engaged with the first handle latch C for transmission, and the intermediate part 82 is engaged with the second handle latch D for transmission. After switching to manual mode via the changeover switch, when manually switching from the first power source to the second power source, the handle 81 is moved to move the intermediate part 82, which in turn moves the first handle latch C, causing the first circuit breaker 2 to trip and disconnect the first power source. Simultaneously, the second handle latch D is moved, causing the second circuit breaker D to close and connect to the second power source.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A mechanical mutual exclusion mechanism, characterized in that, include: The housing includes an upper housing and a lower housing. The upper housing has a first through hole and a first through groove, and the lower housing has a second through hole and a second through groove. The upper housing also has a first fixed shaft inside. The first drive shaft platform includes a first flat bottom platform and a first irregular shaft. The first flat bottom platform is located inside the housing and has a first annular protrusion. The first irregular shaft passes through the first through hole. The second drive shaft platform includes a second flat bottom platform and a second irregular shaft. The second flat bottom platform is located inside the housing and has a second annular protrusion. The second irregular shaft passes through the second through hole. The first linkage mechanism includes a first force-receiving part, a first rotating shaft part, a first hook part, and a first reset part. The first force-receiving part and the second drive shaft are in clearance fit. The first rotating shaft part is provided with a first shaft hole, which is in clearance fit with the first fixed shaft. The first force-receiving part and the first rotating shaft part are stacked. The first hook part is located at the second through groove. The first reset part is provided with a first spring, one end of which is connected to the first reset part, and the other end is fixed to the housing. The second linkage mechanism includes a second force-receiving part, a second rotating shaft part, a second hook part, and a second reset part. The second force-receiving part and the first drive shaft are in clearance fit. The second rotating shaft part is provided with a second shaft hole, which is in clearance fit with the first fixed shaft. The second force-receiving part and the second rotating shaft part are stacked. The second hook part is located at the first through groove. The second reset part is provided with a second spring, one end of which is connected to the second reset part, and the other end is fixed to the housing. In the initial state, the first spring provides an initial force to the first linkage mechanism, placing the second drive shaft in its initial position and engaging with the first linkage mechanism with a clearance fit. The second spring provides an initial force to the second linkage mechanism, placing the first drive shaft in its initial position and engaging with the second linkage mechanism with a clearance fit. When the first irregular shaft is driven by an external force, the first drive shaft table rotates in the driving direction. The second linkage mechanism is driven by the driving pressure of the first drive shaft table to rotate in the opposite direction of the external force with the first fixed shaft as the center. During the rotation, the second hook part transmits the driving pressure and rotates at the first through slot. When the first drive shaft table returns to the initial position, the second linkage mechanism resets under the action of the second spring. When the second irregular shaft is driven by an external force, the second drive shaft table rotates in the driving direction. The first linkage mechanism is driven by the driving pressure of the second drive shaft table to rotate in the opposite direction of the external force with the first fixed shaft as the center. During the rotation, the first hook part transmits the driving pressure and rotates at the second through slot. When the second drive shaft table returns to the initial position, the first linkage mechanism resets under the action of the first spring.

2. The mechanical mutual exclusion mechanism according to claim 1, characterized in that, The housing is also provided with a first limiting member, which is used to limit the positions of the first drive shaft stage and the second drive shaft stage.

3. A mechanical mutual exclusion mechanism according to claim 1 or 2, characterized in that, Also includes: An upper through hole is provided on the housing; An upper through groove is provided on the housing; A second fixed shaft is provided inside the housing; A stepped shaft assembly includes an outer large head, a middle thin shaft portion, and an inner large head. The outer large head is located outside the housing. One end of the middle thin shaft portion is connected to the outer large head, and the other end passes through the upper through hole and is connected to the inner large head. A snap-fit ​​assembly includes a top shaft, a snap-fit ​​spring, an opening, and a snap-fit ​​part. One end of the top shaft abuts against the housing, and the other end passes through the snap-fit ​​spring and connects to the opening. The opening is located at the position of the upper through groove, and the snap-fit ​​part is located at the front end of the opening. A lever component has a lever shaft hole in the middle, which is clearance-fitted with the second fixed shaft. One end of the lever component is located between the first hook portion and the second hook portion, and maintains a certain gap with the first hook portion and the second hook portion. The other end of the lever component is located at the lower end of the inner large head. In the first state, the snap-fit ​​part snaps onto the inner large head; When the outer large head is squeezed by external force, the stepped shaft assembly moves inward, the locking assembly locks the middle thin shaft part, and at the same time, the inner large head hits one end of the lever, and the other end of the lever simultaneously lifts the first hook part and the second hook part. When external force is used to lift the opening through the upper through slot, the stepped shaft assembly can be pulled outwards, and the snap-fit ​​assembly snaps into the inner large head.

4. A dual-power transfer switch employing any one of the mechanical mutual exclusion mechanisms described in claims 1 to 3, comprising a first circuit breaker and a second circuit breaker, wherein the first circuit breaker is connected to a first power source and includes a first housing, a first handle, and a first tripping mechanism; and the second circuit breaker is connected to a second power source and includes a second housing, a second handle, and a second tripping mechanism, characterized in that: The first handle has a first irregularly shaped hole; A first tripping groove is provided on the first housing; The second handle has a second irregularly shaped hole; A second tripping groove is provided on the second housing; Any of the mechanical mutual exclusion mechanisms according to claims 1 to 3, wherein the first irregular shaft and the first irregular hole are in clearance fit, and the second irregular shaft and the second irregular hole are in clearance fit; The first tripping lever has one end passing through the first tripping groove and connected to the first tripping mechanism, and the other end passing through the second through groove and connected to the first hook part, for transmitting the power of the first hook part to the first tripping mechanism; The second release lever has one end passing through the second release groove and connecting to the second release mechanism, and the other end passing through the first through groove and connecting to the second hook part, for transmitting the power of the second hook part to the second release mechanism. The first electric drive mechanism has a first electric drive shaft extending from one end, and the first electric drive shaft and the first irregular hole are in clearance fit. The second electric drive mechanism has a second electric drive shaft extending from one end, and the second electric drive shaft and the second irregular hole are clearance-fitted. The control mechanism is electrically connected to both the first electric drive mechanism and the second electric drive mechanism. It is used to collect circuit data of the first circuit breaker and the second circuit breaker, and to send control signals to the first electric drive mechanism and / or the second electric drive mechanism based on the circuit data. During operation, the first circuit breaker closes, and the circuit is powered by the first power supply. When the control mechanism detects an abnormality in the circuit data of the first circuit breaker, the control mechanism sends a closing signal to the second electric drive mechanism. The second electric drive mechanism drives the second circuit breaker to close, and the circuit is powered by the second power supply. At the same time, the second circuit breaker drives the second irregular shaft to rotate, which causes the first linkage mechanism to rotate. The first hook part pulls the first tripping mechanism through the first tripping rod, causing the first circuit breaker to trip and cut off the first power supply.

5. A dual-power transfer switch according to claim 4, characterized in that, Also includes: An emergency stop switch and the stepped shaft assembly are used to simultaneously cut off the first and second power supplies in an emergency. A reset switch, connected to the snap-fit ​​assembly, is used to reset the emergency stop switch.

6. A dual-power transfer switch according to claim 4 or 5, characterized in that, Also includes: A changeover switch is used to set automatic and manual switching between dual power supplies; The first handle latching component is latched onto the first handle and is used to push the first handle to open or close the first circuit breaker. The second handle latch is latched onto the second handle and is used to push the second handle to open or close the second circuit breaker. A handle assembly includes a handle and a middle component, the handle and the middle component are connected, the handle is used for manually switching the on and off of dual power supplies, the middle component is engaged with a first handle latching member for transmission, and the middle component is engaged with a second handle latching member for transmission. After switching to manual mode via the changeover switch, when manually switching from the first power source to the second power source, the handle is pulled to move the intermediate component, which in turn moves the first handle latch, causing the first circuit breaker to trip and disconnect the first power source. Simultaneously, the second handle latch moves, causing the second circuit breaker to close and connect to the second power source.

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