A dual-power linkage locking device and a dual-power automatic transfer switch

Abstract

The present invention discloses a dual-power linkage locking device and a dual-power automatic transfer switch, which relates to the technical field of low-voltage electrical appliances. It includes a base, as well as a main power operating mechanism, a standby power operating mechanism, and a mechanical lock assembly arranged on the base; the mechanical lock assembly includes a lock body, a lock core is arranged in the lock body, the lock core is respectively connected to a first locking transmission member and a second locking transmission member, and under the action of the rotation of the lock core, the first locking transmission member and the second locking transmission member respectively transmit locking forces centered on the lock core. A first opening half-shaft is arranged at the transmission output end of the first locking transmission member, and a second opening half-shaft is arranged at the transmission output end of the second locking transmission member. Under the action of the locking force, the first opening half-shaft and the second opening half-shaft can lock or unlock the main power operating mechanism and the standby power operating mechanism simultaneously. It can lock the main power operating mechanism and the standby power operating mechanism to the opening position simultaneously, thereby reducing the potential safety hazards during debugging or maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and more particularly, to a dual-power linkage locking device and a dual-power automatic transfer switch. Background Art

[0002] Dual-power automatic transfer switches are widely used in power grids and their power transmission and distribution processes. They can achieve automatic switching between the main power supply and the standby power supply in an extremely short time, and are especially suitable for various occasions where power supply interruption for a long time is not allowed. In particular, in fields such as elevators, fire protection, monitoring, and medical treatment, the requirements for the safety, reliability, continuity, and ease of maintenance of power supply equipment are particularly prominent.

[0003] A dual-power automatic transfer switch has two independent contact systems, each controlling the connection or disconnection of the main power supply and the standby power supply it is connected to. Each contact system is controlled by its own operating mechanism. During normal power supply operation of the dual-power automatic transfer switch, one contact system must be in the closed and connected state while the other contact system is in the open and disconnected state. When the dual-power automatic transfer switch is being installed and debugged or needs to be overhauled and maintained after long-term use, both contact systems must be ensured to be in the open and disconnected state. If the construction party needs to temporarily leave during the debugging or overhaul process, in order to prevent accidental closing during this process, both contact systems must be simultaneously locked in the open position and cannot be closed, ensuring power supply stability and preventing accidents.

[0004] In the prior art, to lock both contact systems of the dual-power automatic transfer switch in the open position, a special open position lock is used, and each of the main power supply operating mechanism and the standby power supply operating mechanism has an open position lock to lock their respective open states. Since two open position locks are required to ensure that both power supply operating mechanisms are in the open and locked state, and the two power supply operating mechanisms are locked one by one in two steps. In actual use, there may be a situation where only one power supply operating mechanism is locked and then the construction party leaves in a hurry, leaving a safety hazard that the other power supply operating mechanism can still be closed. Summary of the Invention

[0005] The purpose of the present invention is to provide a dual-power linkage locking device and a dual-power automatic transfer switch, which can simultaneously lock the main power supply operating mechanism and the standby power supply operating mechanism to the open position, thereby reducing the safety hazard during debugging or overhaul.

[0006] The embodiments of the present invention are implemented as follows:

[0007] According to one aspect of an embodiment of the present invention, a dual-power linkage locking device is provided, comprising a base, and a main power operating mechanism, a backup power operating mechanism and a mechanical lock assembly arranged on the base; the mechanical lock assembly comprises a lock body, a lock core is arranged in the lock body, the lock core is respectively connected to a first locking transmission member and a second locking transmission member, the first locking transmission member and the second locking transmission member respectively transmit a locking force with the lock core as the center under the action of the rotation of the lock core, a first opening half-shaft is arranged at the transmission output end of the first locking transmission member, and a second opening half-shaft is arranged at the transmission output end of the second locking transmission member, the first opening half-shaft and the second opening half-shaft respectively rotate under the action of the locking force to simultaneously lock or unlock the main power operating mechanism and the backup power operating mechanism.

[0008] Optionally, the main power operating mechanism includes a first support frame arranged on the base, and the first opening half-shaft is rotatably connected to the first support frame; the backup power operating mechanism includes a second support frame arranged on the base, and the second opening half-shaft is rotatably connected to the second support frame.

[0009] Optionally, the first opening switch half-shaft includes a first rotating body and a first toggle rod arranged on the first rotating body, a first through hole is correspondingly arranged on the first support frame, the first toggle rod swings in the first through hole, and the first locking transmission member drives the first opening switch half-shaft to rotate through the first toggle rod; the second opening switch half-shaft includes a second rotating body and a second toggle rod arranged on the second rotating body, a second through hole is correspondingly arranged on the second support frame, the second toggle rod swings in the second through hole, and the second locking transmission member drives the second opening switch half-shaft to rotate through the second toggle rod.

[0010] Optionally, the lock core includes a first eccentric protrusion and a second eccentric protrusion, the first locking transmission member is a first connecting plate, the first connecting plate includes a first connecting part, a first supporting part and a first toggle part connected in sequence, the first connecting part is connected to the first eccentric protrusion, and the first toggle part is connected to the first toggle rod; the second locking transmission member is a second connecting plate, the second connecting plate includes a second connecting part, a second supporting part and a second toggle part connected in sequence, the second connecting part is connected to the second eccentric protrusion, and the second toggle part is connected to the second toggle rod.

[0011] Optionally, a first limiting groove is provided on the first connection part, at least one first guide groove along the extension direction of the first support part is provided on the first support part, a first limiting seat corresponding to the first guide groove is provided on the first support frame, and the first eccentric protrusion is connected to the first connection part through the first limiting groove to drive the first connection plate to reciprocate linear motion along the extension direction of the first support part; a second limiting groove is provided on the second connection part, at least one second guide groove along the extension direction of the second support part is provided on the second support part, a second limiting seat corresponding to the second guide groove is provided on the second support frame, and the second eccentric protrusion is connected to the second connection part through the second limiting groove to drive the second connection plate to reciprocate linear motion along the extension direction of the second support part.

[0012] Optionally, a first fixing portion is further provided on the first supporting portion, a first elastic member is provided on the first supporting frame, and the first elastic member is connected to the first fixing portion; a second fixing portion is further provided on the second supporting portion, a second elastic member is provided on the second supporting frame, and the second elastic member is connected to the second fixing portion.

[0013] Optionally, the first locking transmission member is a first flexible rope, one end of which is connected to the lock core, and the other end of which is connected to the first toggle rod; the second locking transmission member is a second flexible rope, one end of which is connected to the lock core, and the other end of which is connected to the second toggle rod.

[0014] Optionally, a first elastic member is provided on the first support frame, and the first elastic member is connected to the first flexible rope so that the first flexible rope has a pre-tightening force to tighten the lock core; a second elastic member is provided on the second support frame, and the second elastic member is connected to the second flexible rope so that the second flexible rope has a pre-tightening force to tighten the lock core.

[0015] Optionally, the main power operating mechanism also includes a first reset elastic member arranged on the first support frame, and the first reset elastic member is connected to the first opening switch half-shaft so that the first opening switch half-shaft has a tendency to unlock the main power operating mechanism; the backup power operating mechanism also includes a second reset elastic member arranged on the second support frame, and the second reset elastic member is connected to the second opening switch half-shaft so that the second opening switch half-shaft has a tendency to unlock the backup power operating mechanism.

[0016] Another aspect of the embodiments of the present invention provides a dual-power automatic transfer switch, comprising the dual-power linkage locking device as described in any one of the above.

[0017] The beneficial effects of the embodiments of the present invention include:

[0018] The dual-power linkage locking device and the dual-power automatic transfer switch provided by the embodiments of the present invention, through the main power operating mechanism, the standby power operating mechanism and the mechanical lock assembly arranged on the base, enable the mechanical lock assembly to establish stable transmission connection relationships with the main power operating mechanism and the standby power operating mechanism respectively. By connecting the lock core with the first locking transmission member and the second locking transmission member respectively, under the rotation action of the lock core, the first locking transmission member and the second locking transmission member transmit locking forces respectively centered on the lock core. By arranging a first opening half shaft at the transmission output end of the first locking transmission member and a second opening half shaft at the transmission output end of the second locking transmission member, the first opening half shaft and the second opening half shaft rotate respectively under the action of the locking force. When the lock core rotates forward or backward, the first opening half shaft and the second opening half shaft rotate back and forth between a first position and a second position to lock or unlock the main power operating mechanism and the standby power operating mechanism. Adopting the above form can lock the main power operating mechanism and the standby power operating mechanism to the opening position simultaneously, thereby reducing the safety hazards during debugging or maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a schematic structural diagram of the dual-power linkage locking device provided by the embodiments of the present invention;

[0021] Figure 2 is a schematic structural diagram of the connection between the lock core and the first opening half shaft and the second opening half shaft respectively provided by the embodiments of the present invention;

[0022] Figure 3 is Figure 1 a partial enlarged view of part A in

[0023] Figure 4 is a schematic structural diagram of the mechanical lock assembly provided by the embodiments of the present invention;

[0024] Figure 5 is a schematic structural diagram of the second connecting plate provided by the embodiments of the present invention;

[0025] Figure 6 is a schematic structural diagram of the positioning seat provided by the embodiments of the present invention.

[0026] Icons: 100 - Dual-power linkage locking device; 110 - Base; 120 - Main power operating mechanism; 122 - First support frame; 124 - First through hole; 126 - First limit seat; 128 - First elastic member; 130 - Backup power operating mechanism; 132 - Second support frame; 140 - Mechanical lock assembly; 142 - Lock body; 144 - Lock core; 146 - First eccentric protrusion; 148 - Second eccentric protrusion; 149 - Positioning seat; 1492 - Positioning hole; 150 - First circuit breaker half shaft; 152 - First rotating body; 154 - First toggle lever; 160 - Second circuit breaker half shaft; 162 - Second rotating body; 164 - Second toggle lever; 170 - First connecting plate; 172 - First connecting portion; 1722 - First limit groove; 174 - First support portion; 1742 - First guide groove; 1744 - First fixing portion; 176 - First toggling portion; 180 - Second connecting plate; 182 - Second connecting portion; 1822 - Second limit groove; 184 - Second support portion; 1842 - Second guide groove; 1844 - Second fixing portion; 186 - Second toggling portion. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] Please refer to Figure 1 and Figure 2 , this embodiment provides a dual-power linkage locking device 100, which includes a base 110, and a main power operating mechanism 120, a standby power operating mechanism 130, and a mechanical lock assembly 140 arranged on the base 110. The mechanical lock assembly 140 includes a lock body 142, and a lock core 144 is arranged inside the lock body 142. The lock core 144 is respectively connected to a first locking transmission member and a second locking transmission member. Under the action of the rotation of the lock core 144, the first locking transmission member and the second locking transmission member respectively transmit locking forces centered on the lock core 144. A first opening half shaft 150 is arranged at the transmission output end of the first locking transmission member, and a second opening half shaft 160 is arranged at the transmission output end of the second locking transmission member. The first opening half shaft 150 and the second opening half shaft 160 rotate respectively under the action of the locking force to simultaneously lock or unlock the main power operating mechanism 120 and the standby power operating mechanism 130.

[0032] Specifically, in this embodiment, the first locking transmission member and the second locking transmission member can adopt rigid members or flexible members. This embodiment does not make specific restrictions on this, as long as they can drive the first opening half shaft 150 and the second opening half shaft 160 to simultaneously lock or unlock the main power operating mechanism 120 and the standby power operating mechanism 130.

[0033] A lock core 144 is arranged inside the lock body 142. The lock core 144 is used to insert a key, and the lock core 144 is rotated by the key. When the lock core 144 rotates, it has two limit positions. Exemplarily, a first position for locking the main power operating mechanism 120 and the standby power operating mechanism 130, and a second position for unlocking the main power operating mechanism 120 and the standby power operating mechanism 130. Compared with the mechanisms that are locked separately, the present application only requires one key and does not need to set too many keys, saving the number of matching locks and keys, which is beneficial to cost reduction.

[0034] The first opening half shaft 150 and the second opening half shaft 160 also respectively have a first position for locking the main power operating mechanism 120 and the standby power operating mechanism 130, and a second position for unlocking the main power operating mechanism 120 and the standby power operating mechanism 130. When the lock core 144 is in the first position, the first opening half shaft 150 and the second opening half shaft 160 are also in the first position. When the lock core 144 is in the second position, it also drives the first opening half shaft 150 and the second opening half shaft 160 to be in the second position. One of the positions can limit the main power operating mechanism 120 and the standby power operating mechanism 130 to prevent the main power operating mechanism 120 and the standby power operating mechanism 130 from closing, and the other position does not affect the closing operation of the main power operating mechanism 120 and the standby power operating mechanism 130.

[0035] The dual-power linkage locking device 100 provided by the embodiment of the present invention enables the mechanical lock assembly 140 to establish a stable transmission connection relationship with the main power operating mechanism 120 and the standby power operating mechanism 130 respectively through the main power operating mechanism 120, the standby power operating mechanism 130 and the mechanical lock assembly 140 arranged on the base 110. By connecting the lock core 144 with the first locking transmission member and the second locking transmission member respectively, under the rotation action of the lock core 144, the first locking transmission member and the second locking transmission member respectively transmit the locking force centered on the lock core 144. By arranging the first opening half shaft 150 at the transmission output end of the first locking transmission member and the second opening half shaft 160 at the transmission output end of the second locking transmission member, the first opening half shaft 150 and the second opening half shaft 160 rotate respectively under the action of the locking force. When the lock core 144 rotates forward or backward, the first opening half shaft 150 and the second opening half shaft 160 rotate back and forth between the first position and the second position to lock or unlock the main power operating mechanism 120 and the standby power operating mechanism 130. Adopting the above form can lock the main power operating mechanism 120 and the standby power operating mechanism 130 to the opening position at the same time, thereby reducing the potential safety hazards during debugging or maintenance.

[0036] As Figure 1 shown, the main power operating mechanism 120 includes a first support frame 122 arranged on the base 110, and the first opening half shaft 150 is rotatably connected to the first support frame 122; the standby power operating mechanism 130 includes a second support frame 132 arranged on the base 110, and the second opening half shaft 160 is rotatably connected to the second support frame 132.

[0037] Specifically, in this embodiment, there is no specific limitation on the structural form of the first support frame 122, as long as it can meet the support requirements for the components corresponding to the first opening half shaft 150 and the main power operating mechanism 120. By way of example, the first support frame 122 can be two vertically arranged plates oppositely disposed on the base 110 or a U-shaped plate disposed on the base 110. When the first opening half shaft 150 is rotatably connected to the first support frame 122, the stability of the rotation of the first opening half shaft 150 is ensured. Similarly, in this embodiment, there is no specific limitation on the structural form of the second support frame 132, as long as it can meet the support requirements for the components corresponding to the second opening half shaft 160 and the standby power operating mechanism 130. By way of example, the second support frame 132 can be two vertically arranged plates oppositely disposed on the base 110 or a U-shaped plate disposed on the base 110. When the first opening half shaft 150 is rotatably connected to the first support frame 122, the stability of the rotation of the first opening half shaft 150 is ensured.

[0038] As Figure 2 shown, the first opening half shaft 150 includes a first rotating body 152 and a first toggle lever 154 provided on the first rotating body 152. Please refer again to Figure 3 , a first through hole 124 is correspondingly provided on the first support frame 122. The first toggle lever 154 swings in the first through hole 124, and the first locking transmission member drives the first opening half shaft 150 to rotate through the first toggle lever 154; the second opening half shaft 160 includes a second rotating body 162 and a second toggle lever 164 provided on the second rotating body 162. A second through hole is correspondingly provided on the second support frame 132. The second toggle lever 164 swings in the second through hole, and the second locking transmission member drives the second opening half shaft 160 to rotate through the second toggle lever 164.

[0039] Specifically, the first opening brake half-shaft 150 is rotatably connected to the first support frame 122 through the first rotating body 152. When the first rotating body 152 is rotatably connected to the first support frame 122, the first toggle rod 154 is used to transmit the power of rotation. Among them, the first toggle rod 154 is located at an eccentric position of the rotation of the first opening brake half-shaft 150. Therefore, when the first rotating body 152 rotates, the first toggle rod 154 swings around the first rotating body 152. A first through hole 124 is provided on the first support frame 122 corresponding to the first toggle rod 154, so that the first toggle rod 154 swings in the first through hole 124. The shape of the first through hole 124 is not specifically limited in this embodiment. For example, it can be circular, rectangular, fan-shaped, etc., as long as it does not affect the movement of the first toggle rod 154. In the preferred solution of this embodiment, the first through hole 124 is fan-shaped so that the first through hole 124 and the movement trajectory of the first toggle rod 154 are more closely matched, so as to reduce the size of the hole of the first support frame 122 and avoid affecting the support strength of the first support frame 122. For example, when the first toggle rod 154 swings to the first position, the main power operating mechanism 120 is limited by the first opening half shaft 150 to prevent the main power operating mechanism 120 from closing, thereby locking the main power operating mechanism 120; when the first toggle rod 154 swings to the second position, the main power operating mechanism 120 is unlocked by the first opening half shaft 150, so that the main power operating mechanism 120 can close. Among them, the above-mentioned first position and second position are respectively the limit positions of the first through hole 124 limiting the first toggle rod 154.

[0040] Similarly, the second opening gate half shaft 160 is rotatably connected to the second support frame 132 through the second rotating body 162. When the second rotating body 162 is rotatably connected to the second support frame 132, the second toggle rod 164 is used to transmit the power of rotation. Among them, the second toggle rod 164 is located at the eccentric position of the rotation of the second opening gate half shaft 160, so when the second rotating body 162 rotates, the second toggle rod 164 swings around the second rotating body 162. A second through hole is provided on the second support frame 132 corresponding to the second toggle rod 164, so that the second toggle rod 164 swings in the second through hole. The shape of the second through hole is not specifically limited in this embodiment. For example, it can be circular, rectangular, fan-shaped, etc., as long as it does not affect the movement of the second toggle rod 164. In the preferred solution of this embodiment, the second through hole adopts a fan shape, so that the second through hole and the movement trajectory of the second toggle rod 164 are more closely fitted, so as to reduce the size of the hole punched in the second support frame 132 and avoid affecting the support strength of the second support frame 132. For example, when the second toggle lever 164 swings to the first position, the backup power operating mechanism 130 is limited by the second opening half shaft 160 to prevent the backup power operating mechanism 130 from closing, thereby locking the backup power operating mechanism 130; when the second toggle lever 164 swings to the second position, the backup power operating mechanism 130 is unlocked by the second opening half shaft 160, thereby enabling the backup power operating mechanism 130 to close. The first position and the second position here are respectively the limit positions of the second through hole limiting the second toggle lever 164.

[0041] It should be noted that the first opening half-shaft 150 and the second opening half-shaft 160 act simultaneously, that is, when the lock cylinder 144 rotates, the main power operating mechanism 120 and the backup power operating mechanism 130 are locked or unlocked at the same time.

[0042] In the optional embodiment of this application, please refer to Figure 2 , Figure 3 and Figure 4 The lock core 144 includes a first eccentric protrusion 146 and a second eccentric protrusion 148. The first locking transmission member is a first connecting plate 170. The first connecting plate 170 includes a first connecting portion 172, a first supporting portion 174 and a first toggle portion 176 connected in sequence. The first connecting portion 172 is connected to the first eccentric protrusion 146, and the first toggle portion 176 is connected to the first toggle rod 154; the second locking transmission member is a second connecting plate 180. The second connecting plate 180 includes a second connecting portion 182, a second supporting portion 184 and a second toggle portion 186 connected in sequence. The second connecting portion 182 is connected to the second eccentric protrusion 148, and the second toggle portion 186 is connected to the second toggle rod 164, wherein the first eccentric protrusion 146 and the second eccentric protrusion 148 are staggered to avoid interference between the first locking transmission member and the second locking transmission member.

[0043] Specifically, the present embodiment does not impose any specific restrictions on the arrangement of the first eccentric protrusion 146 and the second eccentric protrusion 148. For example, the first eccentric protrusion 146 and the second eccentric protrusion 148 can be in the form of a cam, a groove wheel, an eccentric shaft or a zone shaft, etc., as long as the required locking force can be provided for the first connecting plate 170 and the second connecting plate 180 when the lock cylinder 144 rotates. Among them, the connection between the first toggle portion 176 and the first toggle rod 154 specifically refers to the first toggle portion 176 abutting against the first toggle rod 154, and having a toggle force on the first toggle rod 154, so that the first opening gate half shaft 150 rotates. Similarly, the connection between the second toggle portion 186 and the second toggle rod 164 specifically refers to the second toggle portion 186 abutting against the second toggle rod 164, and having a toggle force on the second toggle rod 164, so that the second opening gate half shaft 160 rotates.

[0044] Please refer to Figure 6 The mechanical lock assembly 140 further includes a positioning seat 149, which is provided with a positioning hole 1492, into which the lock body 142 is inserted, so that the lock core 144 is fixedly connected to the positioning seat 149 through the lock body 142, and a mounting portion is provided on the positioning seat 149, so as to facilitate setting the mechanical lock assembly 140 at a suitable position, thereby restricting the main power operating mechanism 120 and the backup power operating mechanism 130. In the embodiment, the mounting seat can be set between the main power operating mechanism 120 and the backup power operating mechanism 130, or can be set on the main power operating mechanism 120 and the backup power operating mechanism 130, as long as the required transmission relationship can be met.

[0045] Please refer to Figure 2 and Figure 5 The first connection portion 172 is provided with a first limiting groove 1722, the first support portion 174 is provided with at least one first guide groove 1742 along the extending direction of the first support portion 174, and the first support frame 122 is provided with a first limiting seat 126 corresponding to the first guide groove 1742 (please refer to Figure 3 ), the first eccentric protrusion 146 is connected to the first connecting part 172 through the first limiting groove 1722 to drive the first connecting plate 170 to reciprocate linearly along the extension direction of the first supporting part 174; the second connecting part 182 is provided with a second limiting groove 1822, and the second supporting part 184 is provided with at least one second guide groove 1842 along the extension direction of the second supporting part 184, and the second supporting frame 132 is provided with a second limiting seat corresponding to the second guide groove 1842, and the second eccentric protrusion 148 is connected to the second connecting part 182 through the second limiting groove 1822 to drive the second connecting plate 180 to reciprocate linearly along the extension direction of the second supporting part 184.

[0046] Specifically, the first limiting seat 126 includes a first seat body and a first limiting shaft provided on the first seat body. The first limiting shaft is arranged through the first guiding groove 1742 to limit the first connecting plate 170, so that the first connecting plate 170 reciprocates linearly along the extending direction of the first supporting portion 174. The first limiting groove 1722 provided on the first connecting portion 172 is used to cooperate with the first eccentric protrusion 146. When the first eccentric protrusion 146 rotates, it can prevent the first eccentric protrusion 146 from jamming with the first limiting groove 1722 and drive the first connecting plate 170 to move at the same time. Similarly, the second limiting seat includes a second seat body and a second limiting shaft provided on the second seat body. The second limiting shaft is arranged through the second guiding groove 1842 to limit the second connecting plate 180, so that the second connecting plate 180 reciprocates linearly along the extending direction of the second supporting portion 184. The second limiting groove 1822 provided on the second connecting portion 182 is used to cooperate with the second eccentric protrusion 148. When the second eccentric protrusion 148 rotates, it can prevent the second eccentric protrusion 148 from jamming with the second limiting groove 1822 and drive the second connecting plate 180 to move at the same time.

[0047] It should be noted that this embodiment does not specifically limit the number of the first guiding groove 1742 and the first limiting seat 126 corresponding to the first guiding groove 1742, as long as the stable transmission of the first connecting plate 170 can be ensured. For example, the number of the first guiding groove 1742 and the first limiting seat 126 corresponding to the first guiding groove 1742 can be set to one group, or can be set to two groups according to needs, etc. Similarly, this embodiment does not specifically limit the number of the second guiding groove 1842 and the second limiting seat corresponding to the second guiding groove 1842, as long as the stable transmission of the second connecting plate 180 can be ensured. For example, the number of the second guiding groove 1842 and the second limiting seat corresponding to the second guiding groove 1842 can be set to one group, or can be set to two groups according to needs, etc.

[0048] Please refer to again Figure 1 、 Figure 2 and Figure 5 . A first fixing portion 1744 is further provided on the first supporting portion 174, and a first elastic member 128 is provided on the first supporting frame 122. The first elastic member 128 is connected to the first fixing portion 1744; a second fixing portion 1844 is further provided on the second supporting portion 184, and a second elastic member is provided on the second supporting frame 132. The second elastic member is connected to the second fixing portion 1844.

[0049] Specifically, the first elastic member 128 provided on the first support frame 122 can be a tension spring or elastic rubber, etc. One end of the first elastic member 128 is connected to the first support frame 122, and the other end is connected to the first fixing portion 1744. When the lock core 144 releases the restriction on the main power operating mechanism 120, the first connecting plate 170 can return to the state before the restriction is released under the action of the first elastic member 128, so as to facilitate turning the lock core 144 again. When the first connecting plate 170 toggles the first toggle lever 154, the first connecting plate 170 is in the position when the main power operating mechanism 120 is unlocked. Similarly, the second elastic member provided on the second support frame 132 can be a tension spring or elastic rubber, etc. One end of the second elastic member is connected to the second support frame 132, and the other end is connected to the second fixing portion 1844. When the lock core 144 releases the restriction on the backup power operating mechanism 130, the second connecting plate 180 can return to the state before the restriction is released under the action of the second elastic member, so as to facilitate turning the lock core 144 again. When the second connecting plate 180 toggles the second toggle lever 164, the second connecting plate 180 is in the position when the main power operating mechanism 120 is unlocked.

[0050] In another alternative embodiment of the present application, the first locking transmission member is a first flexible rope. One end of the first flexible rope is connected to the lock core 144, and the other end of the first flexible rope is connected to the first toggle lever 154; the second locking transmission member is a second flexible rope. One end of the second flexible rope is connected to the lock core 144, and the other end of the second flexible rope is connected to the second toggle lever 164.

[0051] Specifically, the first flexible rope can be made of steel wire, wire rope or elastic rope, etc. In order to prevent the first flexible rope from winding to other positions, a specific limiting track can be provided on the first support frame 122, and a fixed pulley can be provided at the corner to reduce friction. When the lock core 144 rotates, part of the first flexible rope winds around the lock core 144, thereby pulling the first toggle lever 154 to swing, so that the first half-shaft 150 for opening the switch rotates. Similarly, the second flexible rope can also be made of steel wire, wire rope or elastic rope, etc. In order to prevent the second flexible rope from winding to other positions, a specific limiting track can be provided on the second support frame 132, and a fixed pulley can be provided at the corner to reduce friction. When the lock core 144 rotates, part of the second flexible rope winds around the lock core 144, thereby pulling the second toggle lever 164 to swing, so that the second half-shaft 160 for opening the switch rotates.

[0052] In order to facilitate the first flexible rope to return to the state before the restriction is released when the lock core 144 releases the restriction on the main power operation mechanism 120, a first elastic member 128 is provided on the first support frame 122. The first elastic member 128 is connected to the first flexible rope so that the first flexible rope has a pre-tightening force for pulling the lock core 144. Similarly, in order to facilitate the second flexible rope to return to the state before the restriction is released when the lock core 144 releases the restriction on the standby power operation mechanism 130, a second elastic member is provided on the second support frame 132. The second elastic member is connected to the second flexible rope so that the second flexible rope has a pre-tightening force for pulling the lock core 144. In this way, when the lock core 144 is unlocked, the first flexible rope and the second flexible rope can be reset to the state before the main power operation mechanism 120 and the standby power operation mechanism 130 are released from the restriction, so as to facilitate turning the lock core 144 again. When the main power operation mechanism 120 and the standby power operation mechanism 130 are locked by the first flexible rope and the second flexible rope, the first flexible rope and the second flexible rope are in the positions when the main power operation mechanism 120 and the standby power operation mechanism 130 are unlocked.

[0053] In the embodiment of the present application, the main power operation mechanism 120 further includes a first reset elastic member provided on the first support frame 122. The first reset elastic member is connected to the first opening half shaft 150 so that the first opening half shaft 150 has a tendency to unlock the main power operation mechanism 120; the standby power operation mechanism 130 further includes a second reset elastic member provided on the second support frame 132. The second reset elastic member is connected to the second opening half shaft 160 so that the second opening half shaft 160 has a tendency to unlock the standby power operation mechanism 130.

[0054] In this way, when the lock core 144 unlocks the main power operation mechanism 120 and the standby power operation mechanism 130, the first opening half shaft 150 and the second opening half shaft 160 can automatically return to the unlocked state, which is beneficial to improving the convenience of the entire mechanism.

[0055] The embodiment of the present invention also discloses a dual-power automatic transfer switch, which includes the dual-power linkage locking device 100 in the foregoing embodiment. It can safely, reliably and conveniently ensure the stability of the power transmission and distribution line during installation and commissioning, maintenance and repair, and at the same time meet the requirements of convenience during actual production and use. The dual-power automatic transfer switch also includes the same structure and beneficial effects as the dual-power linkage locking device 100 in the foregoing embodiment. The structure and beneficial effects of the dual-power linkage locking device 100 have been described in detail in the foregoing embodiment and will not be repeated here.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dual power supply linkage locking device, It is characterized in that The invention comprises a base, and a main power operating mechanism, a backup power operating mechanism and a mechanical lock assembly arranged on the base; the mechanical lock assembly comprises a lock body, a lock core is arranged in the lock body, the lock core is respectively connected to a first locking transmission member and a second locking transmission member, the first locking transmission member and the second locking transmission member respectively transmit a locking force with the lock core as the center under the action of the rotation of the lock core, a first opening brake half-shaft is arranged at the transmission output end of the first locking transmission member, and a second opening brake half-shaft is arranged at the transmission output end of the second locking transmission member, the first opening brake half-shaft and the second opening brake half-shaft respectively rotate under the action of the locking force to simultaneously lock or unlock the main power operating mechanism and the backup power operating mechanism; the main power operating mechanism comprises a first supporting frame arranged on the base, the first A half-shaft of a disconnecting switch is rotatably connected to the first support frame; the backup power supply operating mechanism includes a second support frame arranged on the base, and the second half-shaft of a disconnecting switch is rotatably connected to the second support frame; the first half-shaft of a disconnecting switch includes a first rotating body and a first toggle rod arranged on the first rotating body, a first through hole is correspondingly arranged on the first support frame, the first toggle rod swings in the first through hole, and the first locking transmission member drives the first half-shaft of a disconnecting switch to rotate through the first toggle rod; the second half-shaft of a disconnecting switch includes a second rotating body and a second toggle rod arranged on the second rotating body, a second through hole is correspondingly arranged on the second support frame, the second toggle rod swings in the second through hole, and the second locking transmission member drives the second half-shaft of a disconnecting switch to rotate through the second toggle rod.

2. The dual power supply linkage locking device according to claim 1, It is characterized in that The lock core includes a first eccentric protrusion and a second eccentric protrusion, the first locking transmission member is a first connecting plate, the first connecting plate includes a first connecting portion, a first supporting portion and a first toggle portion connected in sequence, the first connecting portion is connected to the first eccentric protrusion, and the first toggle portion is connected to the first toggle rod; the second locking transmission member is a second connecting plate, the second connecting plate includes a second connecting portion, a second supporting portion and a second toggle portion connected in sequence, the second connecting portion is connected to the second eccentric protrusion, and the second toggle portion is connected to the second toggle rod.

3. The dual power supply linkage locking device according to claim 2, It is characterized in that The first connection part is provided with a first limiting groove, the first support part is provided with at least one first guide groove along the extension direction of the first support part, the first support frame is provided with a first limiting seat corresponding to the first guide groove, the first eccentric protrusion is connected to the first connection part through the first limiting groove to drive the first connection plate to reciprocate linearly along the extension direction of the first support part; the second connection part is provided with a second limiting groove, the second support part is provided with at least one second guide groove along the extension direction of the second support part, the second support frame is provided with a second limiting seat corresponding to the second guide groove, the second eccentric protrusion is connected to the second connection part through the second limiting groove to drive the second connection plate to reciprocate linearly along the extension direction of the second support part.

4. The dual power supply linkage locking device according to claim 3, It is characterized in that A first fixing portion is also provided on the first supporting portion, a first elastic member is provided on the first supporting frame, and the first elastic member is connected to the first fixing portion; a second fixing portion is also provided on the second supporting portion, a second elastic member is provided on the second supporting frame, and the second elastic member is connected to the second fixing portion.

5. The dual power supply linkage locking device according to claim 1, It is characterized in that The first locking transmission component is a first flexible rope, one end of which is connected to the lock core, and the other end of which is connected to the first toggle rod; the second locking transmission component is a second flexible rope, one end of which is connected to the lock core, and the other end of which is connected to the second toggle rod.

6. The dual power supply linkage locking device according to claim 5, It is characterized in that A first elastic member is provided on the first support frame, and the first elastic member is connected to the first flexible rope so that the first flexible rope has a pre-tightening force to tighten the lock core; a second elastic member is provided on the second support frame, and the second elastic member is connected to the second flexible rope so that the second flexible rope has a pre-tightening force to tighten the lock core.

7. The dual power supply linkage locking device according to any one of claims 1 to 6, It is characterized in that The main power operating mechanism also includes a first reset elastic member arranged on the first support frame, and the first reset elastic member is connected to the first opening switch half-shaft so that the first opening switch half-shaft has a tendency to unlock the main power operating mechanism; the backup power operating mechanism also includes a second reset elastic member arranged on the second support frame, and the second reset elastic member is connected to the second opening switch half-shaft so that the second opening switch half-shaft has a tendency to unlock the backup power operating mechanism.

8. A dual power automatic transfer switch, It is characterized in that It comprises the dual-power-supply linkage locking device as described in any one of claims 1 to 7.

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