Dual-power change-over switch with interlocking structure

Abstract

The utility model relates to the technical field of dual power supply change-over switches, in particular to a dual power supply change-over switch with an interlocking structure, which mainly comprises an operation part, a main shaft and a transmission unit, the main shaft and the transmission unit are arranged in the operation part, and the transmission unit comprises a frame, a transmission assembly arranged in the frame and a side plate arranged on one side of the frame. The side plate is rotatably provided with an interlocking arm I and an interlocking arm II, the main shaft is sleeved with an interlocking plate, the interlocking plate is provided with a spring bolt part matched with the interlocking arm I and the interlocking arm II, and the spring bolt part is arranged between the interlocking arm I and the interlocking arm II. According to the dual-power change-over switch, interlocking of two paths is achieved through the interlocking plate and the first interlocking arm and the second interlocking arm which are arranged on the two sides of the interlocking plate, simultaneous closing of one side of a common power supply and one side of a standby power supply is effectively prevented, and the dual-power change-over switch is high in safety and quite reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of dual power conversion switches, in particular to a dual power conversion switch with an interlocking structure. Background Art

[0002] A dual power transfer switch is a switch that automatically switches to another power source when a power outage occurs. Generally, dual power transfer switches are widely used in high-rise buildings, residential areas, hospitals, airports, docks, fire protection, metallurgy, chemical industry, textiles and other important places where power outages are not allowed.

[0003] Therefore, dual power automatic transfer switches are often used in important places where electricity is used, such as hospitals, airports, and docks, which rely on dual power switching devices to provide continuous power supply. When the common power supply fails in the power supply system, it can be switched to the backup power supply, which can not only prevent the faulty power supply from supplying power to the load, but also reliably select qualified power supplies for normal operation to ensure uninterrupted power supply. PC-level dual power switching devices are generally encapsulated in a complete housing, and their wiring is two-way power supply, one of which is selected and serves as a backup for each other. It is composed of two load isolation switches superimposed and a controller, with mechanical interlocking and electrical interlocking. There are two sets of moving contacts in the traditional PC-level dual power transfer switch, which is achieved through mechanical interlocking and electrical interlocking to prevent the current power supply from running in parallel with the backup power supply.

[0004] The dual power transfer switch control device generally includes two operating modes: automatic control and manual control. Therefore, for safety and reliability, mechanical interlocking and electrical interlocking need to be set up to prevent operation conflicts. Interlocking mechanisms for both automatic control and manual control are required. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In order to solve the above problems, the utility model proposes a dual power conversion switch which has a simple structure, prevents two paths from being turned on at the same time, and is safe and reliable.

[0007] (II) Technical solution

[0008] The utility model discloses a dual power supply switch with an interlocking structure, comprising an operating part, a main shaft arranged in the operating part, and a transmission unit, wherein the transmission unit comprises a frame, a transmission assembly arranged in the frame, and a side plate arranged on one side of the frame, wherein an interlocking arm 1 and an interlocking arm 2 are rotatably provided on the side plate, an interlocking plate is sleeved on the main shaft, wherein a locking tongue portion cooperating with the interlocking arm 1 and the interlocking arm 2 is provided on the interlocking plate, and the locking tongue portion is arranged between the interlocking arm 1 and the interlocking arm 2, when the interlocking plate rotates toward the side of the interlocking arm 1, the interlocking arm 2 also rotates toward the side of the interlocking plate to limit it, and when the interlocking plate rotates toward the side of the interlocking arm 2, the interlocking arm 1 rotates toward the side of the interlocking plate to limit it.

[0009] In the utility model, the side plate is provided with a waist-shaped hole three with a preset shape, the interlocking arm one is provided with a waist-shaped hole four with a preset shape, and the interlocking arm two is provided with a waist-shaped hole five with a preset shape. The interlocking arm one is connected through a pin shaft passing through the waist-shaped hole three, the waist-shaped hole four and the transmission component, and the interlocking arm two is also connected through a pin shaft passing through the waist-shaped hole three, the waist-shaped hole five and the transmission component.

[0010] In the utility model, the rotating shaft of the interlocking arm one is arranged at its lower part, the rotating shaft of the interlocking arm two is arranged in the middle part, the waist-shaped hole four is arranged above the rotating shaft of the interlocking arm one, and the waist-shaped hole five is arranged below the rotating shaft of the interlocking arm two, a bent plate is provided on the top of the side plate, and the interlocking plate is mounted on the limiting member and arranged above the bent plate.

[0011] In the utility model, an action indication structure is also provided on the side panel, and the action indication structure includes a frame and a plurality of micro switches arranged on the frame. A contact plate 1 is provided on the side of the interlocking arm 1, and a contact plate 2 is provided on the side of the interlocking arm 2. When the interlocking arm 1 and the interlocking arm 2 rotate, the contact plate 1 and the contact plate 2 cooperate with the micro switches to transmit signals.

[0012] In the utility model, the limiting member is detachably arranged on the plug-in column of the main shaft, the interlocking plate is sleeved on the limiting member, and the limiting member is further provided with a limiting block to prevent the interlocking plate from falling off.

[0013] In the utility model, the interlocking plate is also provided with an integrally bent T-block, and the limiting member is also provided with a torsion spring for resetting, wherein the torsion spring is arranged between the bent plate and the limiting block, and the two ends of the torsion spring are respectively arranged on both sides of the T-block.

[0014] In the utility model, the two ends of the torsion spring are arranged on both sides of the lower part of the T block.

[0015] In the utility model, the T block is arranged on a side close to the locking tongue portion.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The dual power conversion switch in the utility model realizes interlocking of two circuits through the interlocking plate and the interlocking arm 1 and the interlocking arm 2 arranged on both sides thereof, effectively preventing the common power supply side and the backup power supply side from being closed at the same time, which is highly safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the dual power conversion switch in Example 1;

[0021] Figure 2 Schematic diagram of the internal structure of the dual power conversion switch in Example 1;

[0022] Figure 3 Schematic diagram of the internal structure of the dual power conversion switch in Example 1 (without the drive motor);

[0023] Figure 4 Schematic diagram of the overall structure of the transmission unit in Example 1;

[0024] Figure 5 It is a schematic diagram of the split structure of the transmission unit in Example 1;

[0025] Figure 6 is a schematic diagram of the three-dimensional structure of the gear set in Example 1;

[0026] Figure 7 is a schematic diagram of the overall structure of the transmission assembly in Example 1;

[0027] Figure 8 It is a schematic diagram of the split structure of the linkage member in Example 1;

[0028] Fig. 9 is a schematic diagram of the overall structure of the linkage member in Example 1;

[0029] Fig.10 Schematic diagram of the split structure of the main shaft in Example 1;

[0030] Fig.11 Schematic diagram of the double opening state of the dual power conversion switch in Example 1;

[0031] Fig.12 Schematic diagram of a common power supply closing state of the dual power supply conversion switch in Example 1;

[0032] Fig.13 A schematic diagram of the backup power supply closing state of the dual power supply conversion switch in Example 1;

[0033] Fig.14 This is a schematic diagram of the internal structure of the operating unit in Example 1;

[0034] Fig.15 This is a schematic diagram of the connection structure between the housing and the padlock block in Example 1;

[0035] Fig.16 Schematic diagram of the connection structure of the padlock block, padlock plate and interlocking plate in Example 1;

[0036] Fig.17 This is a schematic diagram of the bottom structure of the padlock block in Example 1.

[0037] 10. Wiring section;

[0038] 20. Operation unit, 210. Transmission unit, 211. Frame, 2111. Waist-shaped hole three, 212. Side plate, 2121. Interlocking arm one, 2122. Interlocking arm two, 2123. Waist-shaped hole four, 2124. Waist-shaped hole five, 2125. Contact plate one, 2126. Bend plate, 2127. Through hole, 2128. Contact plate two, 213. Transmission assembly, 2131. Gear set, 21311. Driving wheel, 2131 2. Square shaft, 21313. Rod body, 21314. Gear tooth 1, 21315. Smooth part, 21316. First driven wheel, 21317. Second driven wheel, 21318. Gear tooth 2, 21319. Gear tooth 3, 21320. Limiting part, 21321. Protrusion, 21322. Curved surface, 21323. Waist-shaped hole 1, 21324. Waist-shaped hole 2, 2132. Linkage part, 2133. I-shaped part, 21 331, shaft, 21332, connecting piece, 2134, first piece, 2135, second piece, 220, main shaft, 221, plug-in column, 222, limiter, 2221, limiter block, 230, drive motor, 240, first transmission wheel, 241, second transmission wheel, 250, interlocking plate, 251, lock tongue, 252, T block, 253, indication area, 254, torsion spring, 255, lock groove, 2551, Path one, 2552, path two, 260, housing, 261, slide groove, 262, lock door, 263, window, 264, straight slot, 265, operating hole, 270, padlock block, 271, through groove, 272, lock cavity, 273, clamping part, 2731, anti-slip texture, 280, padlock plate, 281, lock foot, 282, action indication block, 290, action indication structure, 291, micro switch, 292, frame. DETAILED DESCRIPTION

[0039] Example 1

[0040] like Figure 1-Figure 2 A dual power conversion switch with an interlocking structure is shown, which aims to solve the problem of the complicated interlocking structure and easy failure of the dual power conversion switch in the prior art. The dual power conversion switch of the present application includes a wiring part 10 and an operating part 20, and the operating part 20 is composed of a transmission unit 210, a main shaft 220 and a drive motor 230, that is, the dual power conversion switch of the present application has two modes, automatic and manual, and is opened and closed by the drive motor 230 or opened and closed by manual rotation. Among them, the transmission unit 210 is composed of a frame 211 with an opening on one side, a side plate 212 and a transmission assembly 213 arranged in the frame 211, and the transmission assembly 213 includes two gear sets 2131 and linkage members 2132 arranged above and below.

[0041] Specifically, Figure 3-Figure 6As shown, the linkage 2132 is arranged between the two gear sets 2131, and the gear set 2131 is composed of a driving wheel 21311 with a palm-shaped structure and driven wheels arranged at both ends of the driving wheel 21311, that is, the driving wheel 21311 is provided with a plurality of gear teeth distributed in a shape similar to a palm. The driving wheels 21311 between the two gear sets 2131 are connected through a square shaft 21312, and a rod body 21313 with external threads is further provided at one end of the square shaft 21312, that is, a rectangular hole is provided at the center of the driving wheel 21311, and the square shaft 21312 passes through the rectangular hole to connect the two driving wheels 21311, and the two driving wheels 21311 rotate synchronously.

[0042] The driving wheel 21311 is also provided with a gear tooth 1 21314 and a smooth portion 21315, and the two ends of the gear tooth 1 21314 are not connected to each other, and the two driven wheels include a first driven wheel 21316 and a second driven wheel 21317, wherein the two driven wheels are arranged in a mirror-symmetrical manner. The first driven wheel 21316 and the second driven wheel 21317 are also provided with a gear tooth 2 21318 and a gear tooth 3 21319 respectively, which mesh with the gear tooth 1 21314. The gear tooth 1 21314 accounts for about 1 / 3 of the driving wheel 21311. When the gear tooth 1 21314 is matched with the gear tooth 2 21318, the smooth portion 21315 of the driving wheel 21311 is matched with the second driven wheel 21317, that is, the driving wheel 21311 is always matched with the driven wheel on one side.

[0043] It should be noted that if Figure 6 As shown, the driven wheels (the driven wheels described below are the first driven wheel 21316 and the second driven wheel 21317) are also provided with a limiting portion 21320 that cooperates with the smooth portion 21315, and a protrusion 21321 is also provided in the middle of the limiting portion 21320, and the side of the protrusion 21321 is provided with a curved surface 21322 with the same curvature as the smooth portion 21315, that is, when the driving wheel 21311 is driven by the motor or the main shaft to achieve forward or reverse rotation, the corresponding driven wheel can only rotate through the cooperation of gear one 21314 with gear two 21318 or gear three 21319, while the driven wheel on the other side remains relatively stationary because the curved surface 21322 has the same curvature as the smooth portion 21315.

[0044] like Figure 6As shown, two waist-shaped holes 1 21323 and 21324 with preset shapes are also provided on the two driven wheels, the first driven wheel 21316 and the second driven wheel 21317, and a round hole is also provided between the two waist-shaped holes. In this embodiment, the first driven wheel 21316 is arranged above the driving wheel 21311, and the second driven wheel 21317 is arranged below the driving wheel 21311, and the gear teeth 21318 and 21319 on the two driven wheels are both arranged on the right side of the corresponding driven wheel, that is, the gear teeth on the two driven wheels are on the same side. It should be noted that the limiting portion 21320 of the first driven wheel 21316 is arranged at the bottom, and the limiting portion 21320 of the second driven wheel 21317 is arranged at the top, that is, the limiting portions 21320 of the two driven wheels are both arranged close to the smooth portion 21315 of the driving wheel 21311.

[0045] like Figure 7-9 As shown, the linkage member 2132 includes an I-shaped member 2133 and two sheets with openings, that is, one I-shaped member 2133 forms a group with a first sheet 2134 and a second sheet 2135. The first sheet 2134 and the second sheet 2135 have the same structure. The frame 211 and the side plate 212 are provided with a plurality of fixing holes and four waist-shaped holes 2111 with a preset shape. One end of the two sheets is set on the frame 211 through the waist-shaped hole 21323 of the driven wheel and the I-shaped member 2133 through a pin, and is set in the waist-shaped hole 2111, and the other end is fixed on the frame 211 through a pin.

[0046] The I-shaped piece 2133 includes a shaft 21331 and two connecting pieces 21332, that is, one end of the first piece 2134 and the second piece 2135 is set between the two connecting pieces 21332 of the I-shaped piece 2133 through a pin, and the other end of the first piece 2134 and the second piece 2135 is fixedly set on the frame 211 through a pin. That is, when the I-shaped piece 2133 rotates, the first piece 2134 and the second piece 2135 can rotate with the rotation of the I-shaped piece 2133 with the pin away from one end of the I-shaped piece 2133 as the rotation axis. The end of the first piece 2134 and the second piece 2135 away from the I-shaped piece 2133 is a fixed end, that is, driven by the driven wheel, this end remains stationary, and the other end moves with the drive of the waist-shaped hole 1 21323 or the waist-shaped hole 21324.

[0047] Specifically, a compression spring is sleeved on the first sheet 2134 and the second sheet 2135, and the compression spring is arranged between the two pins. It should be noted that the conventional driven wheel and the connecting piece 21332 are connected through the circular hole at the same time, that is, when the driving wheel 21311 drives the two driven wheels to move, the connecting piece 21332 moves immediately. This will cause the movement speed of the transmission mechanism to be much greater than the rotation speed of the motor, so that the restoring force of the spring will impact the motor, affecting its service life and reliability.

[0048] In order to avoid this problem, the solution adopted by the present application is to set a waist-shaped hole 1 21323 and a waist-shaped hole 21324 on the driven wheel. Since the first sheet 2134, the second sheet 2135, and the I-shaped piece 2133 are connected by pins passing through the waist-shaped hole 1 21323 or the waist-shaped hole 21324, when the driving wheel 21311 drives the driven wheel to rotate, the driven wheel will drive the I-shaped piece 2133 and the connecting piece 21332 to rotate only after rotating through the preset path of the waist-shaped hole 1 21323 and the waist-shaped hole 2 21324. Before the connecting piece 21332 passes the dead point, the motor has completed the disengagement between the two gears, thereby ensuring the reliability and life of the motor.

[0049] In the present invention, two gear sets 2131 are provided, but are not limited to two gear sets 2131 , that is, as long as the transmission of the drive motor 230 or the main shaft 220 can be completed, only one gear set 2131 can be used to form the transmission assembly 213 .

[0050] Furthermore, if Figure 2 As shown, the main shaft 220 is arranged perpendicular to the ground and can rotate 360° horizontally. The transmission between the main shaft 220 and the transmission assembly 213 is carried out by two mutually perpendicular transmission wheels, wherein the first transmission wheel 240 is arranged on the main shaft 220, and the second transmission wheel 241 is arranged on the square shaft 21312. The movement of the main shaft 220 is transmitted to the transmission assembly 213 through the mutually perpendicular first transmission wheel 240 and the second transmission wheel 241, and further drives the dual power conversion switch to perform switching action.

[0051] In the utility model, the first transmission wheel 240 is fixedly arranged at the lower part of the main shaft 220, that is, the first transmission wheel 240 rotates along with the rotation of the main shaft 220, and the second transmission wheel 241 is fixed to the square shaft 21312 with one end having an external thread, and is arranged on the outer side of the side plate 212, that is, the square shaft 21312 with one end having an external thread extends from the frame 211 through the side plate 212 to one side of the main shaft 220.

[0052] like Figure 3-4As shown, two interlocking arms are movably provided on the outer surface of the side plate 212 , and the interlocking arms include an interlocking arm 1 2121 and an interlocking arm 2122 , wherein the interlocking arm 1 2121 is movably provided on the left side of the second transmission wheel 241 , and the interlocking arm 2 2122 is movably provided on the right side of the second transmission wheel 241 .

[0053] The bottom of the interlocking arm 1 2121 is fixed on the side plate 212 by rivets, and a waist-shaped hole 2123 with a preset track is also provided on the interlocking arm 1 2121. In particular, the lower left portion of the interlocking arm 1 2121 is also provided with an integrally bent contact plate 1 2125, and the right portion of the interlocking arm 2 is provided with an integrally bent contact plate 2128. The pin on the left side of the I-shaped piece 2133 above the driving wheel 21311 is set through the waist-shaped hole 2123, that is, the pin passing through the waist-shaped hole 1 21323 on the left side of the first driven wheel 21316 also passes through the waist-shaped hole 2123. When the first driven wheel 21316 rotates, the interlocking arm 1 2121 will be driven to rotate slightly to the right through the pin.

[0054] Specifically, the bottom of the interlocking arm 1 2121 is connected to the side plate 212 through a pin, and the middle of the interlocking arm 2122 is connected to the side plate 212 through a pin. The interlocking arm 1 2121 rotates through the pin at the bottom as the rotating shaft, while the interlocking arm 2 2122 rotates through the pin in the middle as the rotating shaft. A waist-shaped hole 5 2124 with a preset track is provided at the lower part of the interlocking arm 2 2122, the waist-shaped hole 4 2123 is arranged above the rotating shaft of the interlocking arm 1 2121, and the waist-shaped hole 5 2124 is arranged below the rotating shaft of the interlocking arm 2 2122. The pin on the right side of the I-shaped piece 2133 below the driving wheel 21311 is arranged through the waist-shaped hole 5 2124, that is, the pin passing through the waist-shaped hole 2 21324 on the right side of the second driven wheel 21317 also passes through the waist-shaped hole 5 2124. When the second driven wheel 21317 rotates, the second linkage arm can be driven to rotate leftward through the pin.

[0055] Reference Figure 3-Figure 5 , Figure 10-13 The dual power switch interlocking structure of the present application is described in detail.

[0056] like Figure 3 , Fig.10 As shown, the interlocking structure is composed of an interlocking plate 250 mounted on the main shaft 220, an interlocking arm 1 2121, and an interlocking arm 2122, wherein the upper portion of the main shaft 220 is provided with a plug-in column 221 for the interlocking plate 250 to be mounted on.

[0057] Furthermore, the plug-in column 221 is also provided with a stopper 222 via a pin sleeve. Figure 4 , Figure 5As shown, a bent plate 2126 formed by bending is provided on the top of the side plate 212, and a through hole 2127 is provided on the bent plate 2126 for the plug-in column 221 to pass through, and the plug-in column 221 of the main shaft 220 passes through the through hole 2127 and then sets the interlocking plate and the torsion spring 254. That is, the interlocking plate and the torsion spring 254 are both sleeved on the limiting member 222, wherein the limiting member 222 is also provided with a limiting block 2221 to prevent the torsion spring 254 and the interlocking plate from falling off upwards, that is, the torsion spring 254 and the interlocking plate 250 are arranged below the limiting block 2221 and above the bent plate 2126.

[0058] In this embodiment, the stopper 222 is connected and fixed to the plug post 221 by a pin shaft, that is, the plug post 221 is provided with a plug hole on the same side as the stopper 222. The interlocking plate 250 will follow the rotation of the main shaft 220.

[0059] like Fig.10 As shown, the front end of the interlocking plate 250 is provided with a locking tongue portion 251 that cooperates with interlocking arm 1 2121 and interlocking arm 2 2122, and the rear end is provided with a locking groove with a Y-shaped structure, wherein the locking groove has two preset paths, namely path 1 and path 2, and the diameters of path 1 and path 2 are partially overlapped.

[0060] Specifically, a torsion spring 254 is sleeved on the plug-in column 221, and the torsion spring 254 is arranged above the interlocking plate 250. The interlocking plate 250 is also provided with an integrally bent T-block 252, and the extensions at both ends of the torsion spring 254 are respectively arranged on both sides thereof. It should be noted that the function of the torsion spring 254 is to accelerate the opening of the gate or the automatic resetting of the main shaft 220 when the gate is opened, that is, the right end of the torsion spring 254 should be arranged on the left side of the T-block 252, and the left end is the same, so as to achieve the purpose of automatic resetting or accelerating the opening of the gate. The two ends of the torsion spring 254 are respectively arranged at the lower part of the T-block 252, and the upper part thereof is used to prevent the torsion spring 254 from falling off.

[0061] like Fig.11 As shown, at this time, the dual power conversion switch is in a double-open state, that is, the normal power supply and the backup power supply are both disconnected. Figure 12-13 As shown, at this time, the dual power conversion switch is in the normal closing state or the standby closing state, that is, the interlock plate 250 will rotate to the left or right under the drive of the main shaft 220. If the interlock plate 250 rotates to the left, the interlock arm 2122 on the right side rotates to the left to limit the return of the interlock plate 250, that is, the interlock arm 2122 abuts against the right side of the interlock plate 250. The same is true for the right rotation of the main shaft 220, that is, when the interlock plate 250 rotates, the interlock arm on the opposite side of its rotation direction rotates in the same direction. It should be noted that the interlocking structure of the present application is to prevent the power supplies on both sides from being turned on at the same time, that is, when one side is turned on, the power supply on the other side cannot continue to close.

[0062] Reference Figure 1 , Figure 14-17 As shown, the indication structure and padlock structure of the dual power conversion switch are described in detail.

[0063] like Figure 1 , Fig.14 , Fig.15 As shown, the operating part 20 of the dual power conversion switch also includes a housing 260, a padlock block 270 that can slide left and right is provided on the top of the housing 260, and a slide groove 261 for the padlock block 270 to move is provided on the top of the housing 260. A hollow lock door 262 that vertically bulges upward and a straight notch 264 are provided in the slide groove 261, and a lock cavity 272 that accommodates the lock door 262 and uses the lock door 262 as a slider for limited sliding is provided in the middle of the padlock block 270, that is, when the padlock block 270 is set in the slide groove 261, the lock door 262 and the lock cavity 272 cooperate to limit the front and rear directions of the padlock block 270.

[0064] Furthermore, a through slot 271 of a penetrating structure is provided on the lock cavity 272. When the padlock block 270 slides left and right in the slide slot 261, the through slot 271 and the lock door 262 overlap each other, and the lock beam of the padlock can be locked after passing through the through slot 271 and the lock door 262. In this embodiment, the through slot 271 is provided on the right side of the lock cavity 272.

[0065] A padlock plate 280 is also provided above the interlock plate 250. The padlock plate 280 is fixed to the bottom of the padlock block 270 by bolts, that is, the padlock block 270 slides to drive the padlock plate 280 to slide. The bottom of the padlock plate 280 is also provided with a locking foot 281 that cooperates with the lock slot 255 and an L-shaped action indicator block 282. The locking foot 281 and the padlock plate 280 are an integrated structure and are bent vertically downward. Fig.14 As shown, an action indication structure 290 is also fixedly installed on the side panel 212 by bolts. The action indication structure 290 is mainly composed of a frame 292 and four micro switches 291 respectively arranged on the frame 292. The four micro switches 291 are respectively used to cooperate with the interlocking arm 1 2121, the interlocking arm 2122, and the interlocking plate 250 to indicate the action, that is, to identify the swing of the interlocking arm 1 2121, the interlocking arm 2 2122, and the sliding position of the interlocking plate 250.

[0066] Specifically, there are two micro switches 291 respectively arranged outside the interlocking arm 1 2121 and the interlocking arm 2 2122, and the two micro switches 291 are respectively arranged parallel to each other when the interlocking arm 1 2121 and the interlocking arm 2 2122 are in the double opening state. When the common power supply is closed or the backup power supply is closed, the interlocking arm 1 2121 or the interlocking arm 2 2122 returns to the normal state, and the contact plate 1 2125 or the contact plate 2 2128 contacts the micro switch 291 to transmit the action signal. The other two micro switches 291 cooperate with the action indication block 282 of the padlock plate 280 to indicate the action.

[0067] like Figure 15-17 As shown, the rear end of the interlocking plate 250 is provided with a lock slot 255 of a Y-shaped structure, wherein the lock slot 255 has two preset paths, namely, path 1 2551 and path 2 2552, and the diameters of path 1 2551 and path 2 2552 are partially overlapped, i.e., one end of path 1 2551 overlaps with path 2 2552. Path 1 2551 is an arc-shaped structure, while path 2 2552 extends horizontally to one side, wherein the lock foot 281 of the padlock plate 280 can slide left and right in the lock slot 255. When the dual power conversion switch is in the dual opening state, that is, the interlock plate 250 is in the neutral position, the locking pin 281 can move from one end of path one 2551 to the end of path two 2552. At this time, the main shaft 220 is locked and cannot rotate. When the locking pin 281 is at the end of path two 2552, the through groove 271 coincides with the lock door 262, and the maintenance lock can be achieved by padlocking.

[0068] Furthermore, a window 263 penetrating the housing 260 is provided on the slide slot 261 and the padlock block 270, and three indication areas 253 are provided on the top surface of the lock tongue portion 251, and the three evenly distributed indication areas 253 are respectively marked by different bright colors or words. In the utility model, the three indication areas 253 respectively indicate the double opening mode, the common power closing mode and the backup power closing mode, that is, the window 263 is provided above the lock tongue portion 251, and is particularly provided above the indication area 253 indicating the double opening mode when in the double opening mode.

[0069] like Figure 14-15 As shown, the top of the limit member 222 is also provided with an internal hexagonal hole for facilitating manual rotation of the main shaft 220 by means of a tool, and the center of the padlock block 270, i.e., the middle of the gripping portion, is provided with an operating hole 265 that longitudinally penetrates the outer shell 260, so that the main shaft 220 can be rotated using an internal hexagonal wrench through the operating hole 265.

[0070] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A dual power switch with an interlocking structure, comprising an operating part, a main shaft and a transmission unit arranged in the operating part, Features: The transmission unit includes a frame, a transmission assembly arranged in the frame, and a side plate arranged on one side of the frame, wherein an interlocking arm 1 and an interlocking arm 2 are rotatably provided on the side plate, and an interlocking plate is sleeved on the main shaft, wherein the interlocking plate is provided with a locking tongue portion cooperating with the interlocking arm 1 and the interlocking arm 2, and the locking tongue portion is arranged between the interlocking arm 1 and the interlocking arm 2, when the interlocking plate rotates toward the side of the interlocking arm 1, the interlocking arm 2 also rotates toward the side of the interlocking plate to limit it, and when the interlocking plate rotates toward the side of the interlocking arm 2, the interlocking arm 1 rotates toward the side of the interlocking plate to limit it.

2. The dual power transfer switch with interlocking structure according to claim 1, characterized in that: The side plate is provided with a waist-shaped hole three with a preset shape, the interlocking arm one is provided with a waist-shaped hole four with a preset shape, and the interlocking arm two is provided with a waist-shaped hole five with a preset shape. The interlocking arm one is connected by a pin shaft passing through the waist-shaped hole three, the waist-shaped hole four and the transmission component, and the interlocking arm two is also connected by a pin shaft passing through the waist-shaped hole three, the waist-shaped hole five and the transmission component.

3. The dual power transfer switch with interlocking structure according to claim 2, characterized in that: The rotating shaft of the interlocking arm one is arranged at its lower part, the rotating shaft of the interlocking arm two is arranged in the middle part, the waist-shaped hole four is arranged above the rotating shaft of the interlocking arm one, and the waist-shaped hole five is arranged below the rotating shaft of the interlocking arm two. A bent plate is provided on the top of the side plate, and the interlocking plate is mounted on the limiting member and arranged above the bent plate.

4. The dual power transfer switch with an interlocking structure according to any one of claims 1 to 3, characterized in that: An action indication structure is also provided on the side panel, and the action indication structure includes a frame and a plurality of micro switches arranged on the frame. A contact plate 1 is provided on the side of the interlocking arm 1, and a contact plate 2 is provided on the side of the interlocking arm 2. When the interlocking arm 1 and the interlocking arm 2 rotate, the contact plate 1 and the contact plate 2 cooperate with the micro switches to transmit signals.

5. The dual power transfer switch with interlocking structure according to claim 4, characterized in that: The upper part of the main shaft is provided with a plug-in column for the interlocking plate to be sleeved, and the plug-in column is also provided with a limit piece through a pin sleeve, the interlocking plate is sleeved on the limit piece, and the limit piece is also provided with a limit block to prevent the interlocking plate from falling off.

6. The dual power transfer switch with interlocking structure according to claim 5, characterized in that: The interlocking plate is also provided with an integrally bent T-block, and the limiting member is also sleeved with a torsion spring for resetting, wherein the torsion spring is arranged between the bent plate and the limiting block, and the two ends of the torsion spring are respectively arranged on both sides of the T-block.

7. The dual power transfer switch with interlocking structure according to claim 6, characterized in that: The two ends of the torsion spring are arranged on both sides of the lower part of the T block.

8. The dual power transfer switch with interlocking structure according to claim 7, characterized in that: The T block is arranged on a side close to the locking tongue portion.

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