Interlocking mechanism and switch system for automatic transfer switch system

Abstract

The utility model provides an interlocking mechanism and a switch system for an automatic transfer switch system, wherein the interlocking mechanism comprises a cam crank arm, an interlocking plate, a transmission assembly and a locking crank arm, so that when a first trolley type circuit breaker is closed, a second trolley type circuit breaker cannot be closed either manually or electrically, thereby ensuring the uniqueness of the incoming line circuit and enabling the power grid to operate safely and reliably.

Description

Technical Field

[0001] The utility model relates to the field of switch equipment, in particular to an interlocking mechanism and a switch system for an automatic transfer switch system. Background Art

[0002] The automatic transfer switch system consists of an incoming line system and a control system. The incoming line system includes two switch devices: the normal power incoming line and the backup power incoming line, which are suitable for a variety of occasions where power switching is required.

[0003] Each switch device in the medium-voltage automatic transfer switch system is provided with a trolley-type circuit breaker, which includes a circuit breaker body, a trolley frame and a chassis, wherein the trolley frame carries the circuit breaker body, the chassis is arranged on the trolley frame, the chassis includes a fixed baffle, a movable frame and a screw rod, and the movable frame can be moved between a test position and a working position by rotating the screw rod. When the chassis is located at the working position, the circuit breaker body can be closed and opened, that is, closing and opening are achieved by the contact and separation of the moving contact and the static contact of the vacuum bubble in the circuit breaker body.

[0004] For automatic switchgear, since it has two switchgears and therefore two circuit breakers, reliable interlocking is required to prevent the two switchgears from being closed at the same time. Utility Model Content

[0005] In view of this, the utility model proposes an interlocking mechanism for an automatic transfer switch system, the switch system comprising a first trolley circuit breaker and a second trolley circuit breaker, the first trolley circuit breaker having a first main shaft, the first main shaft being used to control the opening and closing of the first trolley circuit breaker, the first main shaft being able to rotate between a first position and a second position, the first position corresponding to the closing position of the first trolley circuit breaker, the second position corresponding to the opening position of the trolley circuit breaker, the second trolley circuit breaker having a second main shaft, the second main shaft being used to control the opening and closing of the second trolley circuit breaker, the second trolley circuit breaker further having a manual button and a micro switch, the manual button being used to manually control the second main shaft, the micro switch being used to electrically control the second main shaft, the interlocking mechanism comprising:

[0006] A cam arm, which is fixed to the first main shaft and can rotate along with the first main shaft;

[0007] A locking plate, which is located in the first trolley-type circuit breaker, and during the process of the first main shaft rotating from the second position to the first position, the cam arm can push the locking plate to rotate from the third position to the fourth position;

[0008] The transmission assembly, when the interlocking plate rotates from the third position to the fourth position, the interlocking plate can push the transmission assembly to move from the fifth position to the sixth position;

[0009] A locking crank arm is located in the second trolley-type circuit breaker, and the transmission assembly can push the locking crank arm to rotate from the seventh position to the eighth position, and in this process, the locking crank arm can push the locking plate to move so that the locking plate moves from the ninth position to the tenth position, the locking plate can press the normally closed contact of the micro switch at the ninth position, and the locking plate can be separated from the normally closed contact of the micro switch at the tenth position, the locking plate can push the closing button plate to rotate so that the closing button plate is separated from the travel range of the manual button, and the closing button plate can trigger the second main shaft to rotate in the closing direction.

[0010] According to the interlocking mechanism, by providing a cam arm, an interlocking plate, a transmission assembly and a locking arm, when the first trolley-type circuit breaker is closed, the second trolley-type circuit breaker cannot be closed either manually or electrically, thereby ensuring the uniqueness of the incoming line circuit and enabling the power grid to operate safely and reliably.

[0011] According to the interlocking mechanism as described above, optionally, the transmission assembly comprises:

[0012] A first subassembly, which is located in the first trolley-type circuit breaker, and the interlocking plate can push the first subassembly to rotate from the fifth position to the sixth position;

[0013] a second subassembly, which is located in the second trolley-type circuit breaker;

[0014] A connecting subassembly is connected between the first subassembly and the second subassembly. During the process of the first subassembly rotating from the fifth position to the sixth position, the second subassembly can be driven to move from the fifth position to the sixth position by driving the movement of the connecting subassembly.

[0015] Such a structure is easy to assemble.

[0016] According to the chain mechanism as described above, optionally,

[0017] The first subassembly comprises:

[0018] A first fixing seat, which is fixed in a first switch device corresponding to the first trolley-type circuit breaker;

[0019] A first connecting shaft, which is rotatably connected to the first fixing seat, and the first connecting shaft is parallel to the first main axis;

[0020] a first flap, which is fixed to the first connecting shaft, wherein a first end of the first flap has a first hole, and the first flap can push the first flap to move during the process of the interlocking plate rotating from the third position to the fourth position, and the first flap can push the first rotating shaft to rotate from the fifth position to the sixth position;

[0021] A first pin, which is inserted into the first hole;

[0022] The second subassembly comprises:

[0023] A second fixing seat, fixed to a second switch device corresponding to the second trolley-type circuit breaker;

[0024] A second connecting shaft, which is rotatably connected to the second fixing seat, and the second connecting shaft is parallel to the second main axis;

[0025] A second flap, which is fixed to the second connecting shaft, a first end of the second flap having a second hole, and the second flap can push the locking crank arm to move;

[0026] The second pin is inserted into the second hole.

[0027] Such a structure is relatively simple, easy to assemble, and convenient for forming a switch system between any two switch devices.

[0028] According to the interlocking mechanism as described above, optionally, the rotation axes of the first connecting shaft, the second connecting shaft, the interlocking plate, the locking crank arm, and the closing button plate are all parallel to the first main axis.

[0029] According to the interlocking mechanism as described above, optionally, the first subassembly further comprises a first restoring member, which is used to provide a restoring force for the first connecting shaft to move from the sixth position to the fifth position;

[0030] The second subassembly also includes a second restoring member, which is used to provide a restoring force for the second connecting shaft to move from the sixth position to the fifth position.

[0031] According to the chain mechanism as described above, optionally, it further comprises:

[0032] a locking plate resetting member, used for providing a resetting force for the locking plate to rotate from the fourth position to the third position;

[0033] The third restoring member is used to provide a restoring force for restoring the closing button panel to within the travel range of the manual button.

[0034] According to the interlocking mechanism as described above, optionally, the interlocking plate is located in the chassis vehicle of the first trolley-type circuit breaker.

[0035] According to the interlocking mechanism as described above, optionally, the interlocking plate has a first protrusion end, a second protrusion end and a third protrusion end, the first protrusion end is fixed to the chassis vehicle, the second protrusion end has a first pulley, the first pulley is used to contact the cam arm, and the third protrusion end has a second pulley, and the second pulley is used to contact the transmission assembly.

[0036] According to the interlocking mechanism as described above, optionally, the locking crank arm has a third pulley and a protrusion, the third pulley is used to contact the transmission assembly, and the protrusion is used to contact the locking plate.

[0037] According to the interlocking mechanism as described above, optionally, the closing button plate has a first positioning hole, the first positioning hole extends along a first direction, the first direction is perpendicular to the second main axis, the second trolley-type circuit breaker has a fixed plate and a bracket plate, the first fixing member is fixed to the fixed plate and penetrates the bracket plate and the first positioning hole, the bracket plate also has an arc-shaped slide groove, the second fixing member is fixedly penetrated through the arc-shaped slide groove and fixed to the closing button plate.

[0038] The utility model also provides an automatic transfer switch system, comprising a first trolley-type circuit breaker and a second trolley-type circuit breaker, and also comprising an interlocking mechanism for the automatic transfer switch system according to any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will be more aware of the above and other features and advantages of the present invention. In the accompanying drawings:

[0040] Figure 1 It is a schematic diagram of the overall structure of the first trolley type circuit breaker and the second trolley type circuit breaker of the utility model.

[0041] Figure 2 for Figure 1 Part A is an enlarged schematic diagram of a case where the first principal axis is located in the second position.

[0042] Figure 3 for Figure 2 Side view of.

[0043] Figure 4 for Figure 1 Part B is an enlarged schematic diagram showing a case where the interlocking plate is located at the third position.

[0044] Figure 5 for Figure 4 Side view of.

[0045] Figure 6 for Figure 1Part A is an enlarged schematic diagram of a case where the first principal axis is located at a first position.

[0046] Figure 7 for Figure 6 Side view of.

[0047] Figure 8 for Figure 1 Part B is an enlarged schematic diagram showing a case where the interlocking plate is located at the fourth position.

[0048] Fig. 9 It is a schematic diagram of the structure of the transmission component from an upward perspective.

[0049] The reference numerals are as follows:

[0050] 1-First-hand car type circuit breaker

[0051] 11-First spindle

[0052] 12-First base plate

[0053] 2- Second-hand car circuit breaker

[0054] 21- Second spindle

[0055] 22-Manual button

[0056] 23-Micro switch

[0057] 231-Normal Closed Contact

[0058] 24-Fixed plate

[0059] 241-First positioning member

[0060] 242-Second fixing member

[0061] 25-Bracket plate

[0062] 251-Curved chute

[0063] 252-Second positioning hole

[0064] 26- Second base plate

[0065] 31-Cam lever arm

[0066] 311-Hollowout

[0067] 32-Interlocking plate

[0068] 321-first protrusion end

[0069] 322- second protrusion end

[0070] 323-third protrusion end

[0071] 324-First pulley

[0072] 325-Second pulley

[0073] 33-Locked Crank Arm

[0074] 331-Third pulley

[0075] 332-protrusion

[0076] 34-First sub-assembly

[0077] 341-First fixed seat

[0078] 342-First connecting shaft

[0079] 343-First Flip

[0080] 3431-First Board

[0081] 3432-Second Board

[0082] 3433-Extension plate

[0083] 344-First pin

[0084] 345-First reset member

[0085] 35-Second sub-assembly

[0086] 351-Second fixed seat

[0087] 352-Second connecting shaft

[0088] 353-Second flip board

[0089] 355-Second reset element

[0090] 36-Connecting sub-assemblies

[0091] 361-first rotating member

[0092] 362-First consecutive swing

[0093] 363-Second consecutive swing

[0094] 364-Second rotating member

[0095] 37-Interlocking plate reset

[0096] 38-Third reset piece

[0097] 4-Locking plate

[0098] 41-Slotted hole

[0099] 42-Location pin

[0100] 5-Closing button panel

[0101] 51-first positioning hole

[0102] 6-Pole

[0103] 7-First chassis vehicle

[0104] 71-First moving frame

[0105] 72-First front panel

[0106] 73-First screw

[0107] 8-Second chassis vehicle

[0108] 81-Second mobile frame

[0109] 82-Second front panel

[0110] 83-Second screw

[0111] D1-First Direction

[0112] D2-Second Direction DETAILED DESCRIPTION

[0113] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail with reference to the following embodiments. The nouns and pronouns related to people in this patent application are not limited to specific genders.

[0114] The utility model provides an interlocking mechanism for an automatic transfer switch system, wherein the switch system has two switch devices, each of which has a vacuum circuit breaker. Figure 1 As shown, the two vacuum circuit breakers are respectively a first trolley circuit breaker 1 and a second trolley circuit breaker 2, wherein the first trolley circuit breaker 1 has a first main shaft 11, and the first main shaft 11 is used to control the opening and closing of the first trolley circuit breaker 1, that is, the rotation of the first main shaft 11 can drive the vacuum bubble in the first trolley circuit breaker 1 to close or open. The vacuum bubble is located in the pole 6. The first chassis 7 of the first trolley circuit breaker 1 has a first moving frame 71, a first front panel 72, and a first screw rod 73, and the second chassis 8 of the second trolley circuit breaker 2 has a second moving frame 81, a second front panel 82, and a second screw rod 83.

[0115] Specifically, the first main shaft 11 can rotate between a first position and a second position, the first position corresponds to the closing position of the first trolley circuit breaker 1, and the second position corresponds to the opening position of the first trolley circuit breaker. The second trolley circuit breaker 2 has a second main shaft 21, and the second main shaft 21 is used to control the closing and opening of the second trolley circuit breaker 2, that is, the rotation of the second main shaft 21 can drive the vacuum bubble in the second trolley circuit breaker 2 to close or open. The second trolley circuit breaker 2 also has a manual button 22 and a micro switch 23, the manual button 22 is used to manually control the second main shaft 21, and the micro switch 23 is connected in series to the control circuit of the electric control of the second main shaft 21, that is, the manual button 22 is used for manual operation of the second trolley circuit breaker 2, and when the micro switch 23 is in the disconnected state, for example, when the normally closed contact of the micro switch 23 is disconnected, the second circuit breaker cannot be electrically operated. The specific implementation method can refer to the prior art, which will not be repeated here.

[0116] The interlocking mechanism of the utility model comprises a cam crank arm 31, a first transmission assembly, a transmission assembly and a locking crank arm 33. The actions described below are all performed when the chassis of the two trolley-type circuit breakers are in the working position.

[0117] The cam arm 31 is fixed to the first main shaft 11 and can rotate along with the first main shaft 11. When the first main shaft 11 is located at the first position, the first trolley type circuit breaker 1 is closed. Figures 6 to 8 As an exemplary illustration, the cam arm 31 has a hollow portion 311, which can reduce the weight of the cam arm 31 and save materials.

[0118] The interlocking plate 32 is located in the first trolley type circuit breaker 1. When the first main shaft 11 rotates from the second position to the first position, the cam arm 31 can push the interlocking plate 32 to rotate from the third position to the fourth position. As an exemplary illustration, the interlocking plate 32 is first located in the first moving frame 71 of the chassis vehicle 7. Figure 1 It can be seen that the first front panel 72 of the first chassis vehicle 7 is stationary, and the first movable frame 71 moves under the action of the first screw rod 73. The specific movement method belongs to the existing technology and will not be repeated here.

[0119] When the locking plate 32 rotates from the third position to the fourth position, the locking plate 32 can push the transmission assembly to move from the fifth position to the sixth position.

[0120] The locking crank arm 33 is located in the second trolley circuit breaker 2. Specifically, the locking crank arm 33 is located in the circuit breaker body of the second trolley circuit breaker 2. When the first main shaft 11 rotates to close the first trolley circuit breaker 1, the transmission assembly can push the locking crank arm 33 to rotate from the seventh position to the eighth position, and in this process, the locking crank arm 33 can push the locking plate 4 to move so that the locking plate 4 moves from the ninth position to the tenth position. The locking plate 4 can press the normally closed contact 231 of the micro switch 23 at the ninth position, and the locking plate 4 can be separated from the normally closed contact 231 of the micro switch 23 at the tenth position. The locking plate 4 can push the closing button plate 5 to rotate so that the closing button plate 5 is separated from the travel range of the manual button 22, and the closing button plate 5 can trigger the second main shaft 21 to rotate in the closing direction. Figures 6 to 8 The figure shows a situation where the transmission assembly is located at the seventh position and a situation where the locking plate 4 is located at the ninth position.

[0121] Through the closing button plate 5, the rotation of the second main shaft 21 can be triggered, thereby realizing the on and off of the second trolley type circuit breaker 2. How to realize the rotation of the second main shaft 21 through the closing button plate 5 can be realized by mechanical means. For example, the closing button plate 5 has a first positioning hole 51, and the first positioning hole 51 extends along the length direction of the closing button plate 5. The first fixing member 241 passes through the first positioning hole 51. The first fixing member 241 can be fixed on the fixing plate 24 in the circuit breaker body. In this way, when the closing button plate 5 is manually pushed, the closing button plate 5 can be moved along the first direction D1, and the first direction D1 is perpendicular to the second main shaft 21, thereby triggering the subsequent mechanical interlocking, so that the second main shaft 21 can rotate in the closing direction. The manual button 22 here refers to the closing button, and there is another button for opening and the corresponding opening and closing button plate 5, which are irrelevant to the utility model, so they are not described in detail. The subsequent mechanical interlocking mentioned above can be any method in the prior art, which will not be repeated here.

[0122] In addition, the closing button plate 5 can also rotate, for example, rotating around the first fixing member 241 as the axis. Figure 4 , Figure 5 and Figure 8As shown, the second trolley-type circuit breaker 2 also has a bracket plate 25, and an arc-shaped slide groove 251 is arranged on the bracket plate 25 of the circuit breaker body. The second fixing member 242 is fixedly penetrated in the arc-shaped slide groove 251 and fixed to the closing button plate 5, and the second fixing member 242 can slide along the arc-shaped slide groove 251. Through the cooperation of the arc-shaped slide groove 251, the first fixing member 241 and the second fixing member 242, the closing button plate 5 can rotate. Correspondingly, a second positioning hole 252 is provided on the bracket plate 25, which is connected to the arc-shaped slide groove 251. The extension direction of the second positioning hole 252 is the same as the extension direction of the first positioning hole 51. There may also be an elongated hole at the position of the bracket plate 25 corresponding to the first positioning hole 51. The first fixing member 241 is penetrated in the elongated hole and the first positioning hole 51, so that the closing button plate 5 can move along the first direction D1. As shown Figure 8 As shown, the stroke range of the first end of the closing button plate 5 being separated from the manual button plate is shown. The stroke range of the first end of the closing button plate 5 being separated from the manual button 22 indicates that the manual button 22 cannot contact the closing button plate 5, and thus cannot trigger the second main shaft 21 to rotate, and thus cannot achieve the closing of the second trolley type circuit breaker 2. The locking plate 4 can be separated from the normally closed contact 231 of the micro switch 23, indicating that the normally closed contact 231 of the micro switch 23 is no longer pressed, that is, the normally closed contact 231 is disconnected. Since the normally closed contact 231 of the micro switch 23 is connected in series in the closing circuit of the second trolley type circuit breaker 2, even if an instruction is issued to trigger the electric drive mechanism to operate, the normally closed contact 231 cannot form a circuit due to the disconnection of the circuit breaker, and the electric operation cannot be achieved.

[0123] According to the interlocking mechanism of the utility model, by providing the cam arm 31, the interlocking plate 32, the transmission assembly and the locking arm 33, when the first trolley circuit breaker 1 is closed, the second trolley circuit breaker 2 cannot be closed either manually or electrically, thereby ensuring the uniqueness of the incoming line circuit and enabling the power grid to operate safely and reliably.

[0124] Optionally, the transmission assembly includes a first subassembly 34, a second subassembly 35 and a connecting subassembly 36. The first subassembly 34 is located in the switch cabinet where the first trolley circuit breaker 1 is located, and the second subassembly 35 is located in the switch cabinet where the second trolley circuit breaker 2 is located. The first subassembly 34 and the second subassembly 35 are connected together by the connecting subassembly 36, which is convenient for assembly. Figure 1 As shown, the interlocking plate 32 can push the first subassembly 34 to rotate from the fifth position to the sixth position. In this process, the connecting subassembly 36 is driven to move from the fifth position to the sixth position in a straight line direction, thereby driving the second subassembly 35 to rotate from the fifth position to the sixth position. The straight line direction is the first direction D1.

[0125] As an exemplary illustration, the first subassembly 34 and the second subassembly 35 have the same structure. Taking the first subassembly as an example, the first subassembly 34 includes a first fixed seat 341, a first connecting shaft 342, a first flap 343 and a first pin shaft 344. Among them, the first fixed seat 341 is fixed in the first switch device corresponding to the first trolley type circuit breaker 1. Specifically, the first fixed seat 341 is fixed on the side of the first bottom plate 12 used to support the first trolley type circuit breaker 1 away from the first trolley type circuit breaker 1. The first fixed seat 341 can have two. The first connecting shaft 342 is rotatably connected to the first fixed seat 341. The first connecting shaft 342 is parallel to the first main shaft 11. Specifically, the two ends of the first connecting shaft 342 are rotatably connected to the first fixed seat 341 respectively. The first end of the first flap 343 has a first hole, and the interlocking plate 32 can push the first flap 343 to move during the process of rotating from the third position to the fourth position, and the first flap 343 can push the first rotating shaft to rotate from the fifth position to the sixth position. The first pin 344 is inserted through the first connecting shaft 342 and is located in the first hole. Correspondingly, the second subassembly 35 includes a second fixed seat 351, a second connecting shaft 352, a second flap 353 and a second pin. Among them, the second fixed seat 351 is fixed to the second switch device corresponding to the second trolley circuit breaker 2. Specifically, the second fixed seat 351 is fixed to the side of the second bottom plate 26 used to carry the second trolley circuit breaker 2 away from the second trolley circuit breaker 2; the second connecting shaft 352 is rotatably connected to the second fixed seat 351, and the second connecting shaft 352 is parallel to the second main shaft 21; the first end of the second flap 353 has a second hole, and the second flap 353 can push the locking crank arm 33 to move; the second pin is inserted through the second connecting shaft 352 and is located in the second hole. Such a structure is relatively simple, easy to assemble, and convenient for forming a switch system between any two switch devices.

[0126] Optionally, the connection subassembly 36 may include multiple parts. As an exemplary illustration, Figure 3 As shown, the connecting subassembly 36 includes a first rotating component 361, a first connecting plate 362, a second connecting plate 363 and a second rotating component 364. The first end of the first rotating component 361 is fixed to the first connecting shaft 342, and the second end of the first rotating component 361 is fixed to the first connecting plate 362. The first connecting plate 362 can be fixedly connected to the second connecting plate 363 by bolts. One end of the second rotating component 364 is connected to the second connecting shaft 352, and the other end is connected to the second connecting plate 363. In this way, the rotation of the first connecting shaft 342 can be converted into linear motion, and then converted into rotation of the second connecting shaft 352 through linear motion. This implementation method has low cost and flexible assembly.

[0127] like Figure 2As shown, the first flap 343 and the second flap 353 of the present invention are both L-shaped plates, which include a first plate and a second plate connected to each other. Figure 2 As shown, the first flap 343 is used for explanation, the first plate 3431 is used to contact the interlocking plate 32, the second plate 3432 has a first hole and the second plate 3432 is connected to the first plate 3431. In the process of the interlocking plate 32 rotating from the third position to the fourth position, the interlocking plate 32 will gradually approach the first flap 343 and push the first flap 343 to move. Due to the action of the first pin 344 and the first hole, the first flap 343 will drive the first connecting shaft 342 to rotate. Optionally, the first plate 3431 is connected to an extension plate 3433, which is integrally formed with the first plate 3431 and forms an obtuse angle with the first plate 3431, so that the overall strength of the extension plate 3433 can be strengthened. The L-shaped plate acts as a lever, and the L-shaped plate is used to apply force to the first main shaft 11, so that the rotation of the first main shaft 11 can be triggered with a smaller force and a smaller movement distance.

[0128] Alternatively, if Figure 2 and Figure 3 As shown, the top of the first flap 343 is inclined, that is, the first plate 3431 is inclined. When the first main shaft 11 is in the open position, the height of the first plate 3431 near the end of the locking plate 32 is higher, so that the locking plate 32 can contact the first flap 343 and apply force to the first flap 343. Figure 4 and Figure 5 As shown, the top of the second flap 353 is inclined. When the second main shaft 21 is in the open position, the height of the second flap 353 close to the locking arm 33 is higher, which makes it easier for the second plate 3432 to apply force to the locking arm 33.

[0129] As an exemplary illustration, the rotation axes of the first connecting shaft 342 , the second connecting shaft 352 , the interlocking plate 32 , the locking crank arm 33 , and the closing button plate 5 are all parallel to the first main shaft 11 , which is equivalent to being parallel to the second main shaft 21 .

[0130] As an exemplary illustration, the interlocking mechanism further includes an interlocking plate reset member (not shown in the figure), which is used to provide a reset force for the interlocking plate 32 to rotate from the fourth position to the third position. Figure 7 During the counterclockwise rotation shown in FIG. 1 , the cam arm 31 rotates accordingly, and the resetting force applied by the interlocking plate resetting member to the interlocking plate 32 causes the interlocking plate 32 to return to the position as shown in FIG. Figure 3 The third position. The interlocking plate reset member can specifically be a spring.

[0131] As an exemplary illustration, the first subassembly 34 further includes a first reset member 345, which is used to provide a reset force for the first connecting shaft 342 to move from the sixth position to the fifth position. The second subassembly 35 further includes a second reset member 355, which is used to provide a reset force for the second connecting shaft 352 to move from the sixth position to the fifth position. More specifically, the first reset member 345 is sleeved on the first connecting shaft 342, and the second reset member 355 is sleeved on the second connecting shaft 352. Both the first reset member 345 and the second reset member 355 can be torsion springs.

[0132] As an exemplary illustration, the interlocking plate 32 is located in the first chassis 7 of the first trolley type circuit breaker 1, specifically in the first moving frame 71 of the first chassis 7. More specifically, the interlocking plate 32 has a first protruding end 321, a second protruding end 322 and a third protruding end 323. The first protruding end 321 is fixed to the first chassis 7, the second protruding end 322 has a first pulley 324, and the first pulley 324 is used to contact the cam arm 31. The third protruding end 323 has a second pulley 325, and the second pulley 325 is used to contact the transmission assembly. When the interlocking plate 32 is in the third position, its second protruding end 322 extends from the top of the first chassis 7. When the interlocking plate 32 is in the fourth position, its third protruding end 323 extends from the bottom of the first chassis 7, and then contacts the first flap 343, and passes through the second pulley 325 and presses the first flap 343 downward, so that the first flap 343 pushes the first connecting shaft 342 to rotate. The first pulley 324 and the second pulley 325 are used to contact other components, so that wear can be avoided.

[0133] As an exemplary illustration, the locking arm 33 has a third pulley 331 and a protrusion 332, wherein the third pulley 331 is used to contact the transmission assembly, and the protrusion 332 is used to contact the locking plate 4. When the locking arm 33 is in the seventh position, it does not contact the transmission assembly. During the movement of the second flap 353 from the fifth position to the sixth position, it gradually approaches the locking arm 33 and contacts the third pulley 331, thereby applying force to the locking arm 33 so that the locking arm 33 rotates from the seventh position to the eighth position, thereby causing the protrusion 332 to gradually approach the locking plate 4, lifting the locking plate 4 upward, so that the locking plate 4 moves from the ninth position to the tenth position. The locking plate 4 is provided with a long hole 41, and the locking plate 4 moves linearly along the first direction D1 through the cooperation of the positioning pin 42 and the long hole 41. The positioning pin 42 can be fixed on the fixing plate 24, and the bracket plate 25 has a corresponding opening, through which the positioning pin 42 passes.

[0134] As an exemplary illustration, the closing button plate 5 has a first positioning hole 51, and the first positioning hole 51 extends along the length direction of the closing button plate 5, and the first direction D1 is perpendicular to the second main axis 21. The second trolley type circuit breaker 2 has a fixing plate 24 and a bracket plate 25, and the first fixing member 241 is fixed to the fixing plate 24 and penetrates the bracket plate 25 and the first positioning hole 51. The bracket plate 25 also has an arc-shaped slide groove 251, and the second fixing member 242 is fixedly penetrated in the arc-shaped slide groove 251 and fixed to the closing button plate 5. When the locking plate 4 moves from the ninth position to the tenth position, it will push the closing button plate 5 to rotate, thereby making the closing button plate 5 out of the range that the manual button 22 can touch.

[0135] During the rotation of the first spindle 11 from the first position to the second position, for example, Figure 7 As shown, the cam arm 31 rotates counterclockwise, and the cam arm 31 gradually disengages from the interlocking plate 32. Under the action of the interlocking plate reset member, the interlocking plate 32 rotates from the fourth position to the third position. When the transmission assembly is not subjected to the force of the interlocking plate 32, the reset member causes the transmission assembly to move from the sixth position to the fifth position. When the locking arm 33 is not subjected to the force of the transmission assembly, the locking arm 33 moves from the eighth position to the seventh position due to the action of gravity, and the locking plate 4 will be restored from the tenth position to the ninth position due to the action of gravity. Under the action of the third reset member (not shown in the figure), the closing button plate 5 will be restored to the travel range of the manual button 22. The third reset member is used to provide a restoring force for the closing button plate to return to the travel range of the manual button 22, and the third reset member can be a spring or a torsion spring.

[0136] Correspondingly, the first trolley circuit breaker 1 also has the same interlocking mechanism as the second trolley circuit breaker 2, and the second trolley circuit breaker 2 also has the same interlocking mechanism as the first trolley circuit breaker 1, so that when the second trolley circuit breaker 2 is closed, the first trolley circuit breaker cannot be closed either manually or electrically. Fig. 9 As shown, another transmission assembly is shown, which also includes a third subassembly 91 that is the same as the second subassembly 35, a fourth subassembly 92 that is the same as the first subassembly 34, and a connecting subassembly 93 that is the same as the connecting subassembly 36. The specific working method is consistent with the above.

[0137] Below Figures 1 to 9 Take the example to explain the working process of the interlocking mechanism used in the automatic transfer switch system. Figures 1 to 5 As shown, the first trolley circuit breaker 1 and the second trolley circuit breaker 2 are both in the open state. Figures 6 to 8 As shown, the first trolley-type circuit breaker 1 is in a closed state, and the second trolley-type circuit breaker 2 cannot be closed. Fig. 9It is shown that both the first trolley-type circuit breaker 1 and the second trolley-type circuit breaker 2 have an interlocking mechanism.

[0138] The switch system has a first switch device and a second switch device. The first switch device has a first trolley circuit breaker 1, and the second switch device has a second trolley circuit breaker 2. The first chassis 7 of the first trolley circuit breaker 1 and the second chassis 8 of the second trolley circuit breaker 2 have both been moved to the working position. Initially, both switch devices are in the open state. The first switch device corresponds to the normal power supply, and the second switch device corresponds to the backup power supply. Figure 2 Shown and Figure 3 As shown, due to the action of the locking plate reset member, the third protrusion end 323 of the locking plate 32 is always kept at a position away from the first flap 343, that is, the third position. Figure 4 and Figure 5 As shown, the locking arm 33 is in the seventh position, away from the second flap 353, and the locking plate 4 is maintained in the ninth position, which presses the normally closed contact 231 of the micro switch 23 to realize the electric closing of the second trolley type circuit breaker 2, and the closing button plate 5 is within the travel range of the manual button 22, so that the second trolley type circuit breaker 2 can be manually closed.

[0139] The first trolley circuit breaker 1 needs to be closed to connect the normal power supply line. At this time, it is necessary to avoid closing the second trolley circuit breaker 2 after the first trolley circuit breaker 1 is in the closed state to avoid the normal power supply and the backup power supply being connected at the same time and causing a fault.

[0140] like Figures 1 to 5 As shown, the first main shaft 11 is located at the second position, and the first main shaft 11 of the first trolley-type circuit breaker 1 rotates from the second position to the first position, and the rotation of the first main shaft 11 can be triggered manually or electrically. The cam arm 31 also rotates clockwise with the first main shaft 11, and then pushes the first pulley 324, and the interlocking plate 32 rotates clockwise, and then the second pulley 325 of the interlocking plate 32 contacts the first flap 343. Since the top of the first flap 343 is inclined, the interlocking plate 32 can easily apply force to the first flap 343 and trigger the first connecting shaft 342 to rotate counterclockwise.

[0141] The counterclockwise rotation of the first connecting shaft 342 will drive the connecting subassembly 36 to move in the opposite direction of the first direction D1, thereby driving the second connecting shaft 352 to rotate counterclockwise. Figure 8 The rotation of the second connecting shaft 352 drives the second flap 353 to move and contact the third pulley 331 of the locking crank arm 33, thereby driving the locking crank arm 33 to rotate counterclockwise.

[0142] The protrusion 332 of the locking arm 33 will push the locking movement to move from the ninth position to the Figure 7In the tenth position, the locking arm 33 drives the locking plate 4 to move along the second direction D2, thereby disengaging from the normally closed contact 231 of the micro switch 23, so that the normally closed contact 231 of the micro switch 23 is disconnected, and the second trolley type circuit breaker 2 cannot be electrically controlled at this time. During the movement, the locking plate 4 can push the closing button plate 5 to rotate clockwise, and the closing button plate 5 avoids the moving path of the manual button 22.

[0143] When the first trolley type circuit breaker 1 is switched from closed to open, the first main shaft 11 is Figure 7 The first position shown is Figure 3 The cam arm 31 rotates counterclockwise. Under the action of the resetting member of the interlocking plate 32, the interlocking plate 32 rotates from Figure 7 The fourth position shown is Figure 4 The first connecting shaft 342 rotates to the third position shown in the figure, and then gradually disengages from the first flap 343. Under the action of the first reset member 345, the first connecting shaft 342 moves clockwise, thereby driving the connecting subassembly 36 to move in the first direction D1, and then driving the second connecting shaft 352 to rotate clockwise. The rotation of the second connecting shaft 352 will drive the second flap 353 to move, and the locking arm 33 will move from the locking position due to the action of gravity. Figure 8 The eighth position shown is restored to Figure 4 In the seventh position shown in the figure, the locking plate 4 will also be moved due to the action of the return spring (not shown in the figure) Figure 8 The figure shows the movement from the tenth position to Figure 4 In the ninth position shown, the closing button plate 5 will be restored to the travel range of the manual button 22 due to the action of the reset member (not shown in the figure). In this way, the second handcart type circuit breaker 2 can perform the closing operation.

[0144] The utility model also provides an automatic transfer switch system, comprising a first trolley type circuit breaker 1 and a second trolley type circuit breaker 2, and also comprising an interlocking mechanism for the automatic transfer switch system of any of the aforementioned examples.

[0145] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An interlocking mechanism for an automatic transfer switch system, the switch system comprising a first trolley-type circuit breaker (1) and a second trolley-type circuit breaker (2), the first trolley-type circuit breaker (1) having a first main shaft (11), the first main shaft (11) being used to control the opening and closing of the first trolley-type circuit breaker (1), the first main shaft (11) being capable of rotating between a first position and a second position, the first position corresponding to the closing position of the first trolley-type circuit breaker (1), the second position corresponding to the opening position of the trolley-type circuit breaker, the second trolley-type circuit breaker (2) having a second main shaft (21), the second main shaft (21) being used to control the opening and closing of the second trolley-type circuit breaker (2), the second trolley-type circuit breaker (2) further having a manual button (22) and a micro switch (23), the manual button (22) being used to manually control the second main shaft (21), the micro switch (23) being connected in series to a control circuit for electrically controlling the second main shaft (21), characterized in that: The chain mechanism includes: A cam arm (31) fixed to the first main shaft (11) and capable of rotating along with the first main shaft (11); A locking plate (32) is located in the first trolley-type circuit breaker (1), wherein when the first main shaft (11) rotates from the second position to the first position, the cam arm (31) can push the locking plate (32) to rotate from the third position to the fourth position; a transmission assembly, wherein when the interlocking plate (32) rotates from the third position to the fourth position, the interlocking plate (32) can push the transmission assembly to move from the fifth position to the sixth position; A locking crank arm (33) is located in the second trolley-type circuit breaker (2); the transmission assembly is capable of pushing the locking crank arm (33) to rotate from a seventh position to an eighth position, and in the process, the locking crank arm (33) is capable of pushing the locking plate (4) to move so that the locking plate (4) moves from a ninth position to a tenth position; the locking plate (4) is capable of pressing a normally closed contact (231) of a micro switch (23) at the ninth position; the locking plate (4) is capable of disengaging from the normally closed contact (231) of the micro switch (23) at the tenth position; the locking plate (4) is capable of pushing a closing button plate (5) to rotate so that the closing button plate (5) is disengaged from the travel range of the manual button (22); and the closing button plate (5) is capable of triggering the second main shaft (21) to rotate in a closing direction.

2. The interlocking mechanism according to claim 1, characterized in that: The transmission assembly comprises: A first subassembly (34) is located in a switch cabinet where the first trolley-type circuit breaker (1) is located, and the interlocking plate (32) is capable of pushing the first subassembly (34) to rotate from a fifth position to a sixth position; A second subassembly (35), which is located in the switch cabinet where the second trolley-type circuit breaker (2) is located; A connecting subassembly (36) is connected between the first subassembly (34) and the second subassembly (35). When the first subassembly (34) rotates from the fifth position to the sixth position, the second subassembly (35) can be driven to move from the fifth position to the sixth position by driving the movement of the connecting subassembly (36).

3. The interlocking mechanism according to claim 2, characterized in that: The first subassembly (34) comprises: A first fixing seat (341) fixed in a first switch device corresponding to the first trolley-type circuit breaker (1); A first connecting shaft (342) rotatably connected to the first fixing seat (341), wherein the first connecting shaft (342) is parallel to the first main shaft (11); a first flap (343) fixed to the first connecting shaft (342); a first end of the first flap (343) having a first hole; the first flap (343) can push the first flap (343) to move when the interlocking plate (32) rotates from the third position to the fourth position; and the first flap (343) can push the first connecting shaft (342) to rotate from the fifth position to the sixth position; A first pin (344) is inserted into the first hole; The second subassembly (35) comprises: A second fixing seat (351) fixed to a second switch device corresponding to the second trolley-type circuit breaker (2); A second connecting shaft (352) rotatably connected to the second fixing seat (351), wherein the second connecting shaft (352) is parallel to the second main shaft (21); A second flap (353) fixed to the second connecting shaft (352), wherein the first end of the second flap (353) has a second hole, and the second flap (353) can push the locking crank arm (33) to move; The second pin is inserted into the second hole.

4. The interlocking mechanism according to claim 3, characterized in that: The rotation axes of the first connecting shaft (342), the second connecting shaft (352), the interlocking plate (32), the locking crank arm (33), and the closing button plate (5) are all parallel to the first main shaft (11).

5. The interlocking mechanism according to claim 3, characterized in that: The first subassembly (34) further comprises a first restoring member (345) for providing a restoring force for the first connecting shaft (342) to move from the sixth position to the fifth position; The second subassembly (35) further comprises a second restoring member (355) for providing a restoring force for the second connecting shaft (352) to move from the sixth position to the fifth position.

6. The interlocking mechanism according to claim 1, characterized in that: Also includes: a locking plate (32) reset member, used for providing a reset force for the locking plate (32) to rotate from the fourth position to the third position; A third restoring member is used to provide a restoring force for restoring the closing button plate (5) to within the travel range of the manual button (22).

7. The interlocking mechanism according to claim 1, characterized in that: The interlocking plate (32) is located in the first chassis vehicle (7) of the first trolley-type circuit breaker (1).

8. The interlocking mechanism according to claim 7, characterized in that: The interlocking plate (32) has a first protruding end (321), a second protruding end (322) and a third protruding end (323); the first protruding end (321) is fixed to the first chassis vehicle (7); the second protruding end (322) has a first pulley (324); the first pulley (324) is used to contact the cam arm (31); the third protruding end (323) has a second pulley (325); the second pulley (325) is used to contact the transmission assembly.

9. The interlocking mechanism according to claim 1, characterized in that: The locking crank arm (33) has a third pulley (331) and a protrusion (332), wherein the third pulley (331) is used to contact the transmission assembly, and the protrusion (332) is used to contact the locking plate (4).

10. The interlocking mechanism according to claim 1, characterized in that: The closing button plate (5) has a first positioning hole (51), and the first positioning hole (51) extends along the length direction of the closing button plate (5); the second trolley-type circuit breaker (2) has a fixing plate (24) and a bracket plate (25); a first fixing member is fixed to the fixing plate (24) and is inserted through the bracket plate (25) and the first positioning hole (51); the bracket plate (25) further has an arc-shaped sliding groove (251); and a second fixing member (242) is fixedly inserted through the arc-shaped sliding groove (251) and is fixed to the closing button plate (5).

11. Automatic transfer switch system, characterized in that: It comprises a first trolley-type circuit breaker (1) and a second trolley-type circuit breaker (2), and also comprises an interlocking mechanism for an automatic transfer switch system according to any one of claims 1 to 10.

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