Isolation switch

Abstract

The utility model discloses an isolating switch, which comprises an operating mechanism, a switching mechanism and an opening mechanism, the operating mechanism comprises a rotating shaft, the switching mechanism comprises a contact assembly, the contact assembly comprises a static contact and a moving contact which is in contact conduction with the static contact, and the moving contact is in transmission connection with the rotating shaft; the opening mechanism comprises a jump buckle plate, a lock buckle plate and an elastic piece, the jump buckle plate and the elastic piece are both in transmission connection with the rotating shaft, the lock buckle plate is provided with a buckle position, and the jump buckle plate has a first state of being buckled to the buckle position and a second state of being separated from the buckle position. When the rotating shaft rotates to a switching-on angle, the jump buckle plate is buckled at the buckling position, the elastic piece is in a stretching state, and when the jump buckle plate is separated from the buckling position, the rotating shaft is driven by the elastic piece to automatically rotate to a switching-off angle. The isolating switch not only can be manually opened, but also can be automatically opened by inputting an opening signal to the isolating switch, so that the safety of operators is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit switch devices, in particular to an isolating switch. Background Art

[0002] An isolating switch is a switching device mainly used for isolating power supply, switching operation, and connecting and disconnecting current circuits. It is mainly composed of an operating mechanism and a switching mechanism. The switching mechanism includes a plurality of stacked contact assemblies, which are driven by the switching mechanism to open and close. At present, rotary isolating switches are basically operated manually. When a system circuit fails, the operator needs to manually turn the isolating switch to the open state, which poses certain safety hazards to the operator of the switch. Utility Model Content

[0003] The main purpose of the utility model is to provide an isolating switch, aiming to realize automatic opening of the isolating switch and ensure the safety of the operator.

[0004] To achieve the above-mentioned purpose, the isolating switch proposed in the utility model includes an operating mechanism, a switch mechanism and a tripping mechanism, wherein the operating mechanism includes a rotating shaft, the switch mechanism includes a contact assembly, the contact assembly includes a static contact and a moving contact that is in contact and conduction with the static contact, and the moving contact is in transmission connection with the rotating shaft; the tripping mechanism includes a tripping plate, a locking plate and an elastic member, the tripping plate and the elastic member are both in transmission connection with the rotating shaft, a snap position is provided on the locking plate, and the tripping plate has a first state of being snapped in the snap position and a second state of being disengaged from the snap position. When the rotating shaft rotates to the closing angle, the tripping plate is snapped in the snap position, and the elastic member is in a stretched state. When the tripping plate is disengaged from the snap position, the rotating shaft automatically rotates to the tripping angle under the drive of the elastic member.

[0005] In one embodiment, the isolating switch also includes a trigger mechanism, which has a telescopic part; the opening mechanism also includes a trip plate, and the trip plate and the lock plate are both rotatably mounted on a support structure, and the trip plate has a first driving end and a second driving end located on both sides of a rotation center, the first driving end abuts against the telescopic part, and the second driving end abuts against the lock plate, and when the telescopic part is extended, the telescopic part drives the trip plate to rotate, and the rotation of the trip plate in turn drives the lock plate to rotate, thereby causing the lock plate to be pulled out of the locking position.

[0006] In one embodiment, the trigger mechanism is an electromagnetic mechanism, which includes a coil and an iron core. The iron core is movably inserted in the central through hole of the coil. The iron core serves as the telescopic member and telescopes under the action of the magnetic field of the coil.

[0007] In one embodiment, a driving shaft is fixedly sleeved on the rotating shaft, and a first rocker arm and a second rocker arm spaced apart vertically are connected to the driving shaft, a driving rod is connected between the first rocker arm and the second rocker arm, and the trip plate and the elastic member are both transmission-connected to the driving rod, and the trip plate and the elastic member are used to drive the driving rod to rotate, thereby driving the rotating shaft to rotate.

[0008] In one embodiment, the operating mechanism further includes a push plate and a swing member, the push plate is connected to the rotating shaft in a transmission manner, an arc-shaped guide groove is provided on the plate surface of the push plate, the swing member is rotatably arranged below the push plate, and a protrusion is convexly provided on the side of the swing member facing the push plate, and the protrusion is inserted into the guide groove. One end of the elastic member is connected to the driving rod, and the other end of the elastic member is connected to the swing member. When the rotating shaft rotates to the closing angle, the driving rod and the swing member are in the first position. At this time, the jump plate is buckled in the buckling position, and the elastic member is in a stretched state; when the jump plate is disengaged from the buckling position, the driving rod and the swing member will rotate to the second position under the elastic force of the elastic member.

[0009] In one embodiment, the isolating switch further comprises an operating handle, wherein the operating handle is fixedly connected to the rotating shaft, and the push plate is fixedly sleeved on a torsion bar of the operating handle.

[0010] In one embodiment, the ornament includes a top plate, a bottom plate and a vertical plate arranged between the top plate and the bottom plate, one end of the elastic member is connected to the driving rod, and the other end of the elastic member is connected to the vertical plate.

[0011] In one embodiment, an upper connecting rod is provided between the driving rod and the tripping plate, one end of the upper connecting rod is fixedly connected to the driving rod, and the other end of the upper connecting rod is rotatably connected to the tripping plate.

[0012] In one embodiment, the switch mechanism includes a first switch unit and a second switch unit arranged side by side, and the first switch unit and the second switch unit both include contact assemblies arranged in a stacked manner. The operating mechanism includes a first rotating shaft and a second rotating shaft arranged side by side, and a linkage mechanism arranged between the first rotating shaft and the second rotating shaft, the first rotating shaft is transmission-connected to the moving contact in the first switch unit, and the second rotating shaft is transmission-connected to the moving contact in the second switch unit, and the linkage mechanism is used to link the first rotating shaft and the second rotating shaft so that the first rotating shaft and the second rotating shaft rotate in the same direction and stop synchronously. The trip plate and the elastic member are transmission-connected to one of the first rotating shaft and the second rotating shaft.

[0013] In one embodiment, the linkage mechanism includes a first link, a second link, a third link and a fourth link, the first link is fixedly sleeved on the first rotating shaft, the second link is fixedly sleeved on the second rotating shaft, one end of the third link is rotatably connected to the first link, the other end of the third link is rotatably connected to the second link, one end of the fourth link is rotatably connected to the first link, the other end of the fourth link is rotatably connected to the second link, and the fourth link is arranged in parallel with the third link, then the first link, the second link, the third link and the fourth link constitute a parallelogram linkage mechanism.

[0014] The tripping mechanism in the isolating switch can realize automatic tripping, and the process of automatic tripping is as follows: in the initial state, the operating handle and the rotating shaft are in the closed state. At this time, the tripping plate is buckled in the buckling position of the locking plate, and the rotating shaft maintains balance under the action of the tripping plate and the elastic member. The elastic member is in a stretched state. When the isolating switch receives the tripping signal, the tripping plate is pulled out of the buckling position, the locking plate and the tripping plate are disengaged, the balance of the rotating shaft is broken, and it automatically rotates to the tripping position under the elastic force of the elastic member, thereby realizing automatic tripping. Therefore, the isolating switch can not only realize manual tripping by rotating the rotating shaft, but also input the tripping signal to the isolating switch by remote control to make the locking plate and the tripping plate disengage, and then drive the rotating shaft to automatically rotate to the tripping position, thereby realizing automatic tripping. When a fault occurs in the system circuit, the operator can input a tripping signal to the isolating switch to disconnect the circuit, so that manual operation is not required, which ensures the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an isolating switch provided by the utility model;

[0017] Figure 2 A schematic diagram of the internal structure of an isolating switch according to the present invention;

[0018] Figure 3 A transmission schematic diagram of a switch mechanism and an operating mechanism of an isolating switch according to an embodiment of the present invention;

[0019] Figure 4 A top view of an embodiment of an isolating switch provided by the utility model;

[0020] Figure 5 A schematic diagram of the partial structure of an embodiment of an isolating switch provided by the utility model;

[0021] Figure 6 A schematic diagram of the structure of a trigger mechanism and a trip mechanism of an isolating switch according to an embodiment of the present invention;

[0022] Figure 7 Another partial structural schematic diagram of an embodiment of an isolating switch provided by the utility model;

[0023] Figure 8 A schematic diagram of another partial structure of an isolating switch according to an embodiment of the present invention;

[0024] Fig. 9 This is a schematic structural diagram of a contact assembly of an isolating switch according to an embodiment of the utility model.

[0025] Description of Figure Numbers:

[0026] 100. Isolating switch; 1. Switch mechanism; 11. First switch unit; 12. Second switch unit; 13. Contact assembly; 131. Moving contact; 132. First stationary contact; 133. Second stationary contact; 2. Operating mechanism; 20. Rotating shaft; 20-1. First rotating shaft; 20-2. Second rotating shaft; 23. Driving shaft; 24. First rocker arm; 25. Second rocker arm; 26. Driving rod; 27. Upper connecting rod; 28. Mounting bracket; 29. ​​Positioning plate; 31. First connecting rod; 32. Second connecting rod; 33. Third connecting rod; 34. Fourth connecting rod; 4. Operating handle; 51. Tripping plate; 52. Locking plate; 53. Tripping plate; 54. Elastic member; 61. Push plate; 611. Guide groove; 62. Swing member; 621. Bump; 7. Trigger mechanism; 71. Telescopic member.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0031] The utility model provides an isolating switch 100 .

[0032] Reference Figures 1 to 6 The embodiment of the isolating switch 100 includes an operating mechanism 2, a switch mechanism 1 and a tripping mechanism. The operating mechanism 2 includes a rotating shaft 20. The switch mechanism 1 includes a contact assembly 13. The contact assembly 13 includes a static contact and a moving contact 131 that is in contact and conduction with the static contact. The moving contact 131 is in transmission connection with the rotating shaft 20. The tripping mechanism includes a tripping plate 51, a locking plate 52 and an elastic member 54. The tripping plate 51 and the elastic member 54 are both in transmission connection with the rotating shaft 20. A snap position is provided on the locking plate 52. The tripping plate 51 has a first state of being snapped in the snap position and a second state of being detached from the snap position. When the rotating shaft 20 rotates to the closing angle, the tripping plate 51 is snapped in the snap position, and the elastic member 54 is in a stretched state. When the tripping plate 51 is detached from the snap position, the rotating shaft 20 automatically rotates to the tripping angle under the drive of the elastic member 54.

[0033] The isolating switch 100 also includes an operating handle 4, which is fixedly connected to the rotating shaft 20 in the operating mechanism 2 and is used to drive the rotating shaft 20 to rotate. The rotation of the rotating shaft 20 drives the moving contact 131 to rotate, thereby realizing the contact conduction or separation between the moving contact 131 and the static contact, thereby realizing manual opening and manual closing. The traditional isolating switch 100 is basically manually operated. After a system circuit fails, the operator needs to manually screw the isolating switch 100 to the opening state, which poses certain safety hazards to the operator of the switch. Unlike the traditional isolating switch 100, the isolating switch 100 of the utility model is provided with an opening mechanism that can realize automatic opening. Figure 5 and Figure 6 The tripping mechanism includes a tripping plate 51, a locking plate 52 and an elastic member 54. The tripping plate 51 and the elastic member 54 are both transmission-connected to the rotating shaft 20 in the transmission mechanism. A buckle position is provided on the locking plate 52. The tripping plate 51 has a first state, a locking state, in which it is buckled in the buckle position, and a second state, a tripping state, in which it is pulled out of the buckle position.

[0034] The automatic opening process of the opening mechanism is as follows: in the initial state, the operating handle 4 and the rotating shaft 20 are in the closed state. At this time, the tripping plate 51 is locked in the locking position of the locking plate 52, and the rotating shaft 20 maintains balance under the action of the tripping plate 51 and the elastic member 54, and the elastic member 54 is in a stretched state. When the disconnector 100 receives the opening signal, the tripping plate 51 is pulled out of the locking position, the locking plate 52 is disengaged from the tripping plate 51, and the balance of the rotating shaft 20 is broken, and it automatically rotates to the opening position under the elastic force of the elastic member 54, thereby realizing automatic opening.

[0035] In summary, the isolating switch 100 can not only realize manual opening by rotating the rotating shaft 20, but also input an opening signal to the isolating switch 100 by remote control to disengage the locking plate 52 from the tripping plate 51, thereby driving the rotating shaft 20 to automatically rotate to the opening position, thereby realizing automatic opening. When a system circuit fails, the operator can input an opening signal to the isolating switch 100 to disconnect the circuit, thereby eliminating the need for manual operation and ensuring the safety of the operator.

[0036] In order to realize automatic tripping of the locking plate 52, an embodiment of the isolating switch 100 also includes a trigger mechanism 7, which has a telescopic member 71. The opening mechanism also includes a tripping plate 53. The tripping plate 53 and the locking plate 52 are both rotatably mounted on the supporting structure. The tripping plate 53 has a first driving end and a second driving end located on both sides of the rotation center. The first driving end abuts against the telescopic member 71, and the second driving end abuts against the locking plate 52. When the telescopic member 71 is extended, the telescopic member 71 drives the tripping plate 53 to rotate, and the rotation of the tripping plate 53 drives the locking plate 52 to rotate, thereby causing the locking plate 52 to be pulled out of the locking position.

[0037] exist Figure 4 In the embodiment shown, the trigger mechanism 7 is an electromagnetic mechanism, which includes a coil and an iron core, which is movably inserted into the central through hole of the coil, and the iron core serves as a telescopic member 71, and the iron core is telescopic under the action of the magnetic field of the coil. When a short circuit occurs in the line or an electrical signal is actively input, current passes through the coil, and the magnetic field generated by the coil being energized can drive the iron core to telescope in the central through hole of the coil.

[0038] At this time, the opening process of the disconnector 100 is as follows: when the disconnector 100 receives the opening signal, current passes through the coil, and the iron core extends toward the trip plate 53 to quickly push the trip plate 53, and the trip plate 53 rotates. The rotation of the trip plate 53 will drive the locking plate 52 to rotate, so that the trip plate 51 is pulled out of the locking position, the balance of the driving rod 26 is broken, the balance of the rotating shaft 20 is broken, and it automatically rotates to the opening position under the elastic force of the elastic member 54, thereby realizing automatic opening.

[0039] Reference Figure 8 In one embodiment of the utility model, a driving shaft 23 is fixedly sleeved on the rotating shaft 20, that is, the driving shaft 23 and the rotating shaft 20 on which it is sleeved do not rotate relative to each other, but rotate synchronously. A first swing rod 24 and a second swing rod 25 spaced apart from each other are connected to the driving shaft 23, and a driving rod 26 is connected between the first swing rod 24 and the second swing rod 25. The trip plate 51 and the elastic member 54 are both transmission-connected to the driving rod 26. The trip plate 51 and the elastic member 54 are used to drive the driving rod 26 to rotate, thereby driving the rotating shaft 20 to rotate.

[0040] In this embodiment, the rotation of the operating handle 4 will drive the drive shaft 23 to rotate, the rotation of the drive shaft 23 will drive the drive rod 26 to rotate, and the rotation of the drive rod 26 will drive the trip plate 51 to rotate. When the operating handle 4 is rotated to the closing angle, the trip plate 51 is locked in the locking position, thereby maintaining the drive rod 26 in the closed state. When the trip plate 51 is pulled out of the locking position under the action of external force, the trip plate 51 is disengaged from the locking plate 52, and the drive rod 26 loses balance and rotates to the second position, thereby driving the rotating shaft 20 and the operating handle 4 to rotate in the opposite direction to the opening state.

[0041] Reference Figure 7The operating mechanism 2 also includes a push plate 61 and a swing member 62. The push plate 61 is connected to the rotating shaft 20 in a transmission manner. The plate surface of the push plate 61 is provided with an arc-shaped guide groove 611. The swing member 62 is rotatably arranged below the push plate 61. The side of the swing member 62 facing the push plate 61 is provided with a protrusion 621, and the protrusion 621 is inserted into the guide groove 611. Among them, one end of the elastic member 54 is connected to the driving rod 26, and the other end of the elastic member 54 is connected to the swing member 62. When the rotating shaft 20 rotates to the closing angle, the driving rod 26 and the swing member 62 are in the first position. At this time, the trip plate 51 is buckled in the buckling position, and the elastic member 54 is in a stretched state; when the trip plate 51 is out of the buckling position, the driving rod 26 and the swing member 62 will rotate to the second position under the elastic force of the elastic member 54.

[0042] Specifically, the isolating switch 100 further includes a housing and a partition disposed in the housing, the partition dividing the chamber of the housing into a first chamber and a second chamber, the operating mechanism 2 and the opening mechanism are both disposed in the first chamber, the switch mechanism 1 is disposed in the second chamber, and a supporting structure for connecting the locking plate 52 and the push plate 61 is disposed on the partition. Figure 7 , a mounting bracket 28 is arranged on the partition, a positioning plate 29 is connected to the top of the mounting bracket 28, a positioning hole is opened on the positioning plate 29, the operating handle 4 includes a knob and a torsion bar arranged below the knob, the torsion bar is rotatably inserted in the positioning hole, the push plate 61 is fixedly sleeved on the torsion bar and can rotate synchronously with the torsion bar, and the push plate 61 is a fan-shaped plate, and an arc-shaped guide groove 611 is arranged on the plate surface of the push plate 61. The swing member 62 is rotatably mounted on the partition and is located below the push plate 61. The swing member 62 includes a top plate, a bottom plate and a vertical plate arranged between the top plate and the bottom plate, the top plate is arranged in contact with the push plate 61, and a convex block 621 is convexly provided on the side of the top plate facing the push plate 61, and the convex block 621 is inserted in the guide groove 611 of the push plate 61.

[0043] In this embodiment, the rotation of the operating handle 4 will drive the push plate 61 to rotate, and the rotation of the push plate 61 will drive the swing member 62 to rotate. The rotation of the swing member 62 will change the tension state of the elastic member 54. When the operating handle 4 is rotated to the closing angle, the push plate 61 drives the swing member 62 to rotate to the first position. At this time, the trip plate 51 and the lock plate 52 are locked, and the elastic member 54 is in a tension state. The driving rod 26 maintains balance under the action of the trip plate 51 and the elastic member 54, and the driving rod 26 is in a locked state, so that the operating handle 4 is maintained in the closing state; when the disconnector 100 receives the opening signal, the trip plate 51 is pulled out of the buckle position, the lock plate 52 is disengaged from the trip plate 51, and the balance of the driving rod 26 is broken. The driving rod 26 will rotate under the elastic force of the elastic member 54, thereby driving the swing member 62 to rotate in the opposite direction, and the reverse rotation of the swing member 62 will drive the push plate 61 to rotate in the opposite direction, and the reverse rotation of the push plate 61 will drive the operating handle 4 and the rotating shaft 20 to rotate in the opposite direction, thereby turning the operating handle 4 to the opening state.

[0044] In an embodiment of the present invention, two elastic members 54 are provided. Providing two elastic members 54 to drive the driving rod 26 to rotate can provide a larger elastic restoring force for the driving rod 26, thereby ensuring the closing speed.

[0045] Regarding the transmission connection between the driving rod 26 and the tripping plate 51, an upper connecting rod 27 is provided between the driving rod 26 and the tripping plate 51, one end of the upper connecting rod 27 is fixedly connected to the driving rod 26, and the other end of the upper connecting rod 27 is rotatably connected to the tripping plate 51, thereby realizing the transmission connection between the tripping plate 51 and the driving rod 26. Thus, the driving rod 26, the upper connecting rod 27 and the tripping plate 51 form a connecting rod mechanism, the rotation of the driving rod 26 will drive the upper connecting rod 27 to rotate, and the rotation of the upper connecting rod 27 will drive the tripping plate 51 to rotate, so that the tripping plate 51 is locked with the locking plate 52.

[0046] It is not difficult to understand that in order to achieve switching of multiple circuits, the isolating switch 100 usually has multiple layers of contact assemblies 13 stacked in the switch mechanism 1. These contact assemblies 13 are connected in series on a single rotating shaft 20, which results in a larger load on the rotating shaft 20 and requires a larger force to move the rotating shaft 20.

[0047] Reference Figures 2 to 4 In one embodiment of the utility model, the switch mechanism 1 is configured as a first switch unit 11 and a second switch unit 12 arranged side by side, and the first switch unit 11 and the second switch unit 12 both include a stacked contact assembly 13. At the same time, the operating mechanism 2 is configured as a first rotating shaft 20 and a second rotating shaft 20 arranged side by side, and a linkage mechanism arranged between the first rotating shaft 20 and the second rotating shaft 20. The first rotating shaft 20 is transmission-connected to the moving contact 131 in the first switch unit 11, and the second rotating shaft 20 is transmission-connected to the moving contact 131 in the second switch unit 12. The linkage mechanism is used to link the first rotating shaft 20 and the second rotating shaft 20 so that the first rotating shaft 20 and the second rotating shaft 20 rotate in the same direction and stop synchronously. At this time, the trip plate 51 and the elastic member 54 are transmission-connected to one of the first rotating shaft 20 and the second rotating shaft 20.

[0048] Reference Fig. 9Each group of contact assemblies 13 includes a moving contact 131, a first stationary contact 132 and a second stationary contact 133, wherein the first stationary contact 132 and the second stationary contact 133 are arranged diagonally, the moving contact 131 is arranged between the first stationary contact 132 and the second stationary contact 133, and the moving contact 131 is transmission-connected with the corresponding rotating shaft 20, and the moving contact 131 rotates with the rotation of the corresponding rotating shaft 20, thereby realizing the contact conduction or separation and disconnection between the moving contact 131 and the stationary contact, thereby realizing the opening and closing of the switch. Among them, the diagonal arrangement of the first stationary contact 132 and the second stationary contact 133 can improve the stability of the electrical connection relationship in the first switch unit 11 and the second switch unit 12, and avoid mutual interference. At the same time, the staggered arrangement of the upper and lower adjacent contact assemblies 13 in the same switch unit can avoid the upper and lower adjacent contact assemblies 13 from interfering with each other, improve the space utilization rate, and further shorten the longitudinal height of the disconnector 100.

[0049] In this embodiment, a linkage mechanism is provided between the first rotating shaft 20 and the second rotating shaft 20 to drive the first rotating shaft 20 and the second rotating shaft 20 to rotate in the same direction and stop synchronously. That is, when one of the rotating shafts 20 rotates under the action of an external force, the rotating shaft 20 will drive the linkage mechanism to rotate, and the rotation of the linkage mechanism will drive the other rotating shaft 20 to rotate. When one of the rotating shafts 20 is locked, the other rotating shaft 20 will also be locked.

[0050] For example, in the embodiment shown in the figure, the linkage mechanism includes a first link 31, a second link 32, a third link 33 and a fourth link 34, the first link 31 is fixedly sleeved on the first rotating shaft 20, the second link 32 is fixedly sleeved on the second rotating shaft 20, one end of the third link 33 is rotatably connected to the first link 31, the other end of the third link 33 is rotatably connected to the second link 32, one end of the fourth link 34 is rotatably connected to the first link 31, the other end of the fourth link 34 is rotatably connected to the second link 32, and the fourth link 34 is arranged in parallel with the third link 33, then the first link 31, the second link 32, the third link 33 and the fourth link 34 constitute a parallelogram linkage mechanism. Therefore, the rotation of the first rotating shaft 20 will drive the four links to rotate, and then drive the second rotating shaft 20 to rotate, thereby realizing the linkage of the first rotating shaft 20 and the second rotating shaft 20.

[0051] In another embodiment, the linkage mechanism includes a first link 31, a second link 32, and a third link 33, one end of the first link 31 is fixedly connected to the first rotating shaft 20, one end of the second link 32 is fixedly connected to the second rotating shaft 20, the first link 31 and the second link 32 are equal in length, one end of the third link 33 is rotatably connected to the first link 31, and the other end of the third link 33 is rotatably connected to the first link 31. At this time, the first link 31, the second link 32, and the third link 33 constitute a three-link mechanism, and the rotation of the first rotating shaft 20 will also drive the three links to rotate, thereby driving the second rotating shaft 20 to rotate, and the linkage of the first rotating shaft 20 and the second rotating shaft 20 can also be achieved.

[0052] In this embodiment, the switch mechanism 1 is arranged as a first switch unit 11 and a second switch unit 12 arranged side by side, and the first rotating shaft 20 drives the moving contact 131 in the first switch unit 11 to rotate, and the second rotating shaft 20 drives the moving contact 131 in the second switch unit 12 to rotate, and a linkage mechanism is arranged between the two rotating shafts 20 to link the two rotating shafts 20 together, so that the first rotating shaft 20 and the second rotating shaft 20 rotate in the same direction and stop synchronously, thereby realizing the synchronous closing and opening of the first switch unit 11 and the second switch unit 12. Obviously, when the contact assemblies 13 are arranged in the same direction, the contact assemblies 13 are arranged in two rows, which can not only shorten the longitudinal height of the disconnector 100, but also reduce the load of a single rotating shaft 20. At the same time, the synchronous closing and opening of the two rotating shafts 20 can be realized by leveraging the linkage mechanism, which is more labor-saving.

[0053] In summary, the opening process of the isolating switch 100 is explained by taking the fixed connection between the operating handle 4 and the first rotating shaft 20 as an example: in the initial state, the operating handle 4 and the two rotating shafts 20 are in the closed state, and the moving contacts 131 in the first switch unit 11 and the second switch unit 12 are in contact with the static contacts and are turned on. At this time, the trip plate 51 is buckled in the buckle position of the lock plate 52, and the driving rod 26 maintains balance under the action of the trip plate 51 and the elastic member 54, and the elastic member 54 is in a stretched state; when the isolating switch 100 receives the opening signal, the coil passes the current, the iron core extends toward the trip plate 53 and quickly pushes the trip plate 53, and the trip plate 53 rotates, The rotation of the trip plate 53 will drive the lock plate 52 to rotate, so that the trip plate 51 is pulled out of the locking position, the balance of the driving rod 26 is broken, and the driving rod 26 will rotate under the elastic force of the elastic member 54. The rotation of the driving rod 26 will drive the pendulum 62 to rotate in the opposite direction, and the reverse rotation of the pendulum 62 will drive the push plate 61 to rotate in the opposite direction. The reverse rotation of the push plate 61 will drive the operating handle 4 and the first rotating shaft 20 to rotate in the opposite direction. The first rotating shaft 20 drives the second rotating shaft 20 to rotate synchronously to the opening position through the linkage mechanism, so that the moving contact 131 in the first switch unit 11 and the second switch unit 12 is separated from the static contact, thereby realizing automatic opening.

[0054] After the tripping plate 51 is tripped, the operating handle 4 is rotated in the opening direction. The rotation of the operating handle 4 will drive the driving shaft 23 to rotate. The rotation of the driving shaft 23 will drive the driving rod 26 to rotate. The rotation of the driving rod 26 will drive the upper connecting rod 27 to rotate. The rotation of the upper connecting rod 27 will drive the tripping plate 51 to rotate. The tripping plate 51 is locked in the locking position again, waiting for the next opening.

[0055] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An isolating switch, characterized in that: include: An operating mechanism, wherein the operating mechanism comprises a rotating shaft; A switch mechanism, the switch mechanism comprising a contact assembly, the contact assembly comprising a stationary contact and a moving contact in contact with the stationary contact, the moving contact being drivingly connected to the rotating shaft; A gate opening mechanism, the gate opening mechanism comprising a trip plate, a lock plate and an elastic member, the trip plate and the elastic member are both drivingly connected to the rotating shaft, the lock plate is provided with a buckle position, the trip plate has a first state of being buckled in the buckle position and a second state of being disengaged from the buckle position; When the rotating shaft rotates to the closing angle, the trip plate is buckled in the buckling position, and the elastic member is in a stretched state. When the trip plate is disengaged from the buckling position, the rotating shaft automatically rotates to the opening angle driven by the elastic member.

2. The isolating switch according to claim 1, characterized in that: The isolating switch further comprises a trigger mechanism, wherein the trigger mechanism comprises a telescopic member; The gate opening mechanism also includes a trip plate, and the trip plate and the lock plate are both rotatably mounted on the support structure. The trip plate has a first driving end and a second driving end located on both sides of a rotation center, the first driving end abuts against the telescopic member, and the second driving end abuts against the lock plate. When the telescopic member is extended, the telescopic member drives the trip plate to rotate, and the rotation of the trip plate in turn drives the lock plate to rotate, thereby causing the lock plate to be pulled out of the locking position.

3. The isolating switch according to claim 2, characterized in that: The trigger mechanism is an electromagnetic mechanism, which includes a coil and an iron core. The iron core is movably inserted in the central through hole of the coil. The iron core serves as the telescopic member and is telescopic under the action of the magnetic field of the coil.

4. The isolating switch according to claim 1, characterized in that: A driving shaft is fixedly sleeved on the rotating shaft, and a first swing rod and a second swing rod spaced apart vertically are connected to the driving shaft, a driving rod is connected between the first swing rod and the second swing rod, and the trip plate and the elastic member are both transmission-connected to the driving rod, and the trip plate and the elastic member are used to drive the driving rod to rotate, thereby driving the rotating shaft to rotate.

5. The isolating switch according to claim 4, characterized in that: The operating mechanism further comprises a push plate and a swing member, wherein the push plate is transmission-connected to the rotating shaft, an arc-shaped guide groove is provided on the plate surface of the push plate, the swing member is rotatably arranged below the push plate, a convex block is convexly arranged on one side of the swing member facing the push plate, and the convex block is inserted into the guide groove; Among them, one end of the elastic member is connected to the driving rod, and the other end of the elastic member is connected to the pendulum member. When the rotating shaft rotates to the closing angle, the driving rod and the pendulum member are in the first position. At this time, the trip plate is buckled in the buckling position, and the elastic member is in a stretched state; when the trip plate is disengaged from the buckling position, the driving rod and the pendulum member will rotate to the second position under the elastic force of the elastic member.

6. The isolating switch according to claim 5, characterized in that: The isolating switch also includes an operating handle, which is fixedly connected to the rotating shaft, and the push plate is fixedly sleeved on the torsion bar of the operating handle.

7. The isolating switch according to claim 5, characterized in that: The pendulum comprises a top plate, a bottom plate and a vertical plate arranged between the top plate and the bottom plate. One end of the elastic member is connected to the driving rod, and the other end of the elastic member is connected to the vertical plate.

8. The isolating switch according to claim 4, characterized in that: An upper connecting rod is arranged between the driving rod and the tripping plate, one end of the upper connecting rod is fixedly connected to the driving rod, and the other end of the upper connecting rod is rotatably connected to the tripping plate.

9. The isolating switch according to any one of claims 1 to 8, characterized in that: The switch mechanism comprises a first switch unit and a second switch unit arranged side by side, wherein the first switch unit and the second switch unit each comprise a contact assembly arranged in a stacked manner; The operating mechanism comprises a first rotating shaft and a second rotating shaft arranged side by side, and a linkage mechanism arranged between the first rotating shaft and the second rotating shaft, the first rotating shaft is drivingly connected to the moving contact in the first switch unit, the second rotating shaft is drivingly connected to the moving contact in the second switch unit, and the linkage mechanism is used to link the first rotating shaft and the second rotating shaft so that the first rotating shaft and the second rotating shaft rotate in the same direction and stop synchronously; The trip plate and the elastic member are transmission-connected to one of the first rotating shaft and the second rotating shaft.

10. The isolating switch according to claim 9, characterized in that: The linkage mechanism includes a first link, a second link, a third link and a fourth link. The first link is fixedly sleeved on the first rotating shaft, the second link is fixedly sleeved on the second rotating shaft, one end of the third link is rotatably connected to the first link, the other end of the third link is rotatably connected to the second link, one end of the fourth link is rotatably connected to the first link, the other end of the fourth link is rotatably connected to the second link, and the fourth link is arranged in parallel with the third link. Then the first link, the second link, the third link and the fourth link constitute a parallelogram linkage mechanism.

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