CN207752928U - A kind of tri-station isolating switch - Google Patents

Abstract

The utility model provides a kind of tri-station isolating switch, including isolation cutter mechanism, control loop mechanism, motor-operating mechanism and manual operation integrate assembly, and motor-operating mechanism is by being driven axis connection control loop mechanism and isolation cutter mechanism；Isolation knife assembly includes static contact group I, static contact group II and moving contact group, and moving contact group is rotatablely connected by link mechanism and transmission shaft；Control loop mechanism cam mechanism and auxiliary switch signal group, auxiliary switch signal group are electrically connected by line bank with external control system；Manual operation integrates assembly and is connect with motor-operating mechanism by gear drive.The tri-station isolating switch realizes the mutual conversion that two-way high-voltage power circuit is closed or disconnects using isolation cutter mechanism and auxiliary signal switching group, using hierarchical design and modularized design, have well arranged, simple and compact for structure, conversion quickly and high reliability.

Description

A kind of tri-station isolating switch

Technical field

The utility model belongs to disconnecting switch technical field, and in particular to a kind of tri-station isolating switch.

Background technology

Disconnecting switch is mainly used in the power supply system in track transportation industry field, when main electricity breaks down Avoidable trouble power powers to the load, or realizes power grid/storage for the moment in dual-supply voltage subway high-voltage power supply system The conversion of battery working power.

There is presently no one kind can be not only used in power supply system, avoided when main electricity breaks down trouble power to Load supplying and it can be used for dual-supply voltage subway high-voltage power supply system, to realize the three of power grid/battery-operated power supply conversion Station disconnecting switch.

Utility model content

The purpose of the utility model is to overcome deficiencies in the prior art, provide a kind of tri-station isolating switch, both can be used In power supply system, trouble power is avoided to power to the load when main electricity breaks down, and can be used for dual-supply voltage Subway high-voltage power supply system realizes the conversion of power grid/battery-operated power supply.

There is provided a kind of tri-station isolating switch for the technical solution of the utility model, including set gradually from the bottom to top Cutter mechanism, control loop mechanism, motor-operating mechanism and manual operation is isolated and integrates assembly, the motor-operating mechanism passes through biography Moving axis connects control loop mechanism and isolation cutter mechanism；The isolation knife assembly includes static contact group I, static contact group II and moves tactile Head group, the static contact group I and static contact group II are symmetrically distributed in moving contact group both sides, and the moving contact group passes through link mechanism It is rotatablely connected with transmission shaft；The control loop mechanism includes the cam mechanism being socketed on transmission shaft and is arranged in cam mechanism The auxiliary switch signal group of both sides, the auxiliary switch signal group are electrically connected by line bank with external control system；The hand Dynamic operation integrates assembly and is connect with motor-operating mechanism by gear drive.

Further, the link mechanism includes driving lever and follower lever, the driving lever and transmission axis connection, it is described from Lever is connect with moving contact group, hinged by pivot pin between the driving lever and follower lever.

Further, the cam mechanism includes the cam I and cam II to distribution, I He of the cam along transmission shafts Cam II is in contact with the contact of auxiliary switch signal group.

Further, the motor-operating mechanism includes electric baseboard and the motor that is arranged on electric baseboard, the electricity Machine output shaft end and transmission axis connection.

Further, the motor-operating mechanism further includes gear-stopping bar and pin, and the gear-stopping bar is perpendicular to transmission shaft Axial direction setting, and one end of gear-stopping bar is fixed on transmission shaft, and the pin is fixed on electric baseboard, and The distance between pin and transmission shaft are less than the length of gear-stopping bar.

Further, it includes operation panel that the manual operation, which integrates assembly, and the operation panel side is provided with locking Position of the switch button, operation handle, sign, position of the switch lock button, anti-error behaviour lock button, the setting of the operation panel other side There are position of the switch lock, anti-error behaviour lock, manual unlocking auxiliary switch and electronic unlock auxiliary switch, the locking switch position button Bottom is provided with reaction spring, and the operation handle is connect with the gear mechanism, and the position of the switch lock is locked with the position of the switch Button is correspondingly arranged, and position of the switch lock is connect with electronic unlock auxiliary switch, and anti-error behaviour's lock is corresponding with anti-error behaviour lock button Setting, anti-error behaviour's lock are connect with manual unlocking auxiliary switch, and the manual unlocking auxiliary switch and electronic unlock auxiliary switch are equal It is electrically connected with motor-operating mechanism, the sign is electrically connected with auxiliary switch signal group.

Further, the gear mechanism includes drive bevel gear and driven wheel of differential, the driven wheel of differential and motor It is sequentially connected, the drive bevel gear is connected to the end of operation handle, and controlling driving gear by operation handle is located at work Position and inoperative position, the drive bevel gear engages in working position with driven wheel of differential, drive bevel gear inoperative position and from Dynamic bevel gear disconnects.

Further, the motor-operating mechanism includes locating piece, and described locating piece one end is fixed on transmission shaft, separately One end is equipped with card slot corresponding with anti-error behaviour's locking phase.

Further, the static contact group I and static contact group II include fixed contact pedestal and are arranged on fixed contact pedestal The copper bar of copper bar, the static contact group I and static contact group II is located at same level setting, and the copper bar is close to moving contact group Side has chamfering；The moving contact group includes movable contact block, is arranged on movable contact block fixed plate and with fixed plate one The touchpad assembly of end rotation connection, the touchpad assembly are located at same level setting, touchpad assembly and static contact with copper bar One end that group I or static contact group II correspond to contact is equipped with the fingertip being in contact with copper bar, passes through connecting rod in the middle part of the touchpad assembly Mechanism and transmission axis connection.

Further, the touchpad assembly includes the clamping plate of two parallel intervals setting, parallel between two clamping plates to set The two fingertip plates set, and positioned at the reed and backing plate between clamping plate and fingertip plate, the reed is plugged on the fingertip On plate, fixed by support shaft and the support sleeve interval being arranged in support shaft between two fingertip plates, the connecting rod Mechanism end is fixed on support sleeve, is bolted to connection between the clamping plate and fingertip plate, two fingertip plates Between spacing distance be less than the copper bar thickness, the fixed plate is clamped between two fingertip plate one ends, described Fingertip have it is multiple, and along it is arranged in a straight line be arranged in two fingertip plate medial ends.

Compared with prior art, the beneficial effects of the utility model：

(1) this tri-station isolating switch provided by the utility model is kept apart by cam mechanism control in control loop Central Shanxi Plain moving contact group is located at the action process of static contact group I, static contact group II and centre position, and shows that disconnecting switch position is believed Number output；It is directly connected to simultaneously with the cam mechanism in control loop mechanism using transmission shaft, controls motor-operating mechanism signal Switching group greatly improves the positional precision of tri-station isolating switch, realizes high-precision divide-shut brake；And it also can be in electronic behaviour Making to integrate assembly by manual operation in the case of failure mechanisms ensures the normal work of disconnecting switch.

(2) this tri-station isolating switch provided by the utility model is real using isolation cutter mechanism and auxiliary signal switching group The mutual conversion that existing two-way high-voltage power circuit is closed or disconnects, using hierarchical design and modularized design, have it is well arranged, It is simple and compact for structure, conversion quickly and high reliability.

(3) it is compact-sized that cutter mechanism is isolated in this tri-station isolating switch provided by the utility model, while contact system System uses distributed contact mode, and is plane contact or point contact, increases contact area of the fingertip with the row of connection, effectively keeps away Exempt from or reduce because current convergence generates heat, substantially increases current-carrying capability, KA Rms ability and service life time limit.

(4) it is manually operated in this tri-station isolating switch provided by the utility model and integrates assembly equipped with the position of the switch Lock, anti-error behaviour lock, manual unlocking auxiliary switch and electronic unlock auxiliary switch, a variety of safeguard procedures realize that disconnecting switch can jointly By action, it is ensured that disconnecting switch electric operating or manual operation are safe and reliable.

The utility model is described in further details below with reference to attached drawing.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model tri-station isolating switch；

Fig. 2 is the structural schematic diagram that cutter mechanism is isolated in the utility model tri-station isolating switch；

Fig. 3 is that control loop mechanism is illustrated with cutter mechanism package assembly is isolated in the utility model tri-station isolating switch Figure；

Fig. 4 is the structural schematic diagram of motor-operating mechanism in the utility model tri-station isolating switch；

Fig. 5 is that the vertical view for integrating assembly is manually operated in the utility model；

Fig. 6 is that the front view for integrating assembly is manually operated in the utility model；

Fig. 7 is that the upward view for integrating assembly is manually operated in the utility model；

Fig. 8 is the touchpad assembly explosive view that cutter mechanism is isolated in the utility model.

Reference sign：1, cutter mechanism is isolated；2, control loop mechanism；3, motor-operating mechanism；4, manual operation collection At assembly；5, line bank；6, transmission shaft；7, link mechanism；8, static contact group II；9, moving contact group；10, static contact group I；11、 Fixed contact pedestal；12, copper bar；13, movable contact block；14, fixed plate；15, touchpad assembly；16, follower lever；17, auxiliary switch signal Group；18, gear-stopping bar；19, cam I；20, cam II；21, driving lever；22, pivot pin；23, motor；24, locating piece；25, from mantle Gear；26, pin；27, anti-error behaviour locks button；28, button is locked in the position of the switch；29, operation panel；30, locking switch position Button；31, operation handle；32, sign；33, drive bevel gear；34, electronic unlock auxiliary switch；35, reaction spring； 36, manual unlocking auxiliary switch；37, anti-error behaviour's lock；38, the position of the switch is locked；39, clamping plate；40, reed；41, fingertip plate；42, it props up Support axis；43, support sleeve；44, fingertip；45, backing plate.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The all other embodiment obtained, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that term "center", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality Novel limitation；In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with On.

As shown in Figure 1, Figure 2 and Figure 3, a kind of tri-station isolating switch is present embodiments provided, including from the bottom to top successively Isolation cutter mechanism 1, control loop mechanism 2, motor-operating mechanism 3 and the manual operation of setting integrate assembly 4, the electric operating Mechanism 3 connects control loop mechanism 2 and isolation cutter mechanism 1 by transmission shaft 6, and motor-operating mechanism 3 provides for the disconnecting switch Power drive, driving transmission shaft 6 drive control loop mechanism 2 and isolation cutter mechanism 1 to rotate；And in order to realize three work of disconnecting switch The control of position, the isolation knife assembly 1 include static contact group I 10, static contact group II 8 and moving contact group 9, the static contact group I 10 and static contact group II 8 be symmetrically distributed in 9 both sides of moving contact group, the moving contact group 9 passes through 6 turns of link mechanism 7 and transmission shaft Dynamic connection, drives link mechanism 7 to rotate synchronously, to control moving contact group 9 in static contact group I in 6 rotation process of transmission shaft It is moved between 10 and static contact group II 8；The control loop mechanism 2 includes cam mechanism and the setting being socketed on transmission shaft 6 Auxiliary switch signal group 17 in cam mechanism both sides, the auxiliary switch signal group 17 are by line bank 5 and external control System electrical connection.Wherein, auxiliary switch signal group 17 can be multiple quick-action switches；Transmission shaft 6 is connected to biography in rotation process Cam mechanism on moving axis 6 rotates synchronously, when the moving contact group 9 of isolation cutter mechanism 1 is located at static contact group I 10 or static contact group II 8 or when centre position, the cam mechanism of synchronous rotation with correspond to contact in auxiliary switch signal group 17 and be in contact, to which auxiliary is opened OFF signal group 17 transmits the position signal of moving contact group 9, realizes the action process of three stations of disconnecting switch, and show isolation Switch position signal exports；The manual operation integrates assembly 4 and is connect with motor-operating mechanism 3 by gear drive, In the case that motor-operating mechanism 3 fails, assembly 4 can be integrated by manual operation and controls gear drive work, to tooth Wheel drive mechanism gear drive drives motor-operating mechanism 3 that transmission shaft 6 is driven to rotate, and ensures the normal of the tri-station isolating switch Work.This tri-station isolating switch provided in this embodiment is compact-sized, using isolation cutter mechanism 1 and auxiliary signal switching group 17 realize two-way high-voltage power circuits be closed or disconnect mutual conversions, and by transmission shaft 6 with it is convex in control loop mechanism 2 Wheel mechanism is directly connected to, and controls 3 signaling switch group of motor-operating mechanism, greatly improves the position essence of tri-station isolating switch Degree realizes high-precision divide-shut brake.

The embodiment of refinement, for the driving structure of 9 position of moving contact group, as shown in Figures 2 and 3, the connecting rod machine Structure 7 includes driving lever 21 and follower lever 16, and the driving lever 21 is connect with transmission shaft 6, and the follower lever 16 connects with moving contact group 9 It connects, it is hinged by pivot pin 22 between the driving lever 21 and follower lever 16, during transmission shaft 6 rotates clockwise, drive master Lever 21 rotates synchronously, and the rotation of driving lever 21 drives follower lever 16 to move, and then drives moving contact group 9 to static contact group II 8 Direction is moved, and is electrically communicated with static contact group II 8, conversely, during transmission shaft 6 rotates counterclockwise, drives moving contact group 9 It moves to I 10 direction of static contact group, and is electrically communicated with static contact group I 10, by the rotation of transmission shaft 6, it can be achieved that moving contact Group 9 is located at static contact group I 10, static contact group II 8 or three, both centre positions different station；And it is moved in moving contact group 9 During dynamic, the cam mechanism in control loop mechanism 2 is also moved synchronously with the mobile generation of moving contact group 9, and with its both sides Auxiliary switch signal group 17 electrically communicate, sets of contacts 9 is set out according to the signal transmission of connection to auxiliary switch signal group 17 Different position signals；Specifically, the cam mechanism includes axially being distributed two distinct types of cam I 19 along transmission shaft 6 With cam II 20, the cam I 19 and cam II 20 are in contact with the contact of auxiliary switch signal group 17, i.e. cam I 19 and convex II 20 are taken turns in distribution up and down, cam I 19 and II 20 quantity of cam can be multiple, with touching for corresponding auxiliary switch signal group 17 Head quantity is corresponding, can pass through gasket interval between each cam I 19 and cam II 20；Moving contact group 9 and static contact group I 10 are quiet When the contact of sets of contacts II 8 electrically conducts, cam I 19 also rotates synchronously contact corresponding with auxiliary switch signal group 17 and is in contact, It is located at signal at II 8 station of static contact group I 10 or static contact group to which sets of contacts 9 is set out in the transmission of auxiliary switch signal group 17, and When moving contact group 9 turns to static contact group I 10 and static contact group II 8 between the two, cam II 20 rotates synchronously and auxiliary switch 17 corresponding contact of signal group is in contact, to which the centrally located letter of sets of contacts 9 is set out in the transmission of auxiliary switch signal group 17 Number, the action process of three different stations of disconnecting switch is realized by controlling 17 sequential of auxiliary switch signal group, and show in this way Disconnecting switch is in the state instruction of three different stations, and easy to operate, the positional precision of tri-station isolating switch is high, it can be achieved that high Precision divide-shut brake.

A kind of embodiment, as shown in Fig. 2, the static contact group I 10 and static contact group II 8 include 11 He of fixed contact pedestal The copper bar 12 of the copper bar 12 being arranged on fixed contact pedestal 11, the static contact group I 10 and static contact group II 8 is located at same level Setting, the moving contact group 9 include movable contact block 13, the fixed plate 14 that is arranged on movable contact block 13 and with fixed plate 14 1 The touchpad assembly 15 of end rotation connection, the touchpad assembly 15 are located at same level setting, touchpad assembly 15 with copper bar 12 The one end contacted, which is corresponded to, with static contact group I 10 or static contact group II 8 is equipped with the fingertip 44 being in contact with copper bar 12, the touch panel group 15 middle part of part is connect by link mechanism 7 with transmission shaft 6, and transmission shaft 6 drives the touch panel group of moving contact group 9 by link mechanism 7 Part 15, which moves in the horizontal direction, individually to be contacted with the copper bar 12 of static contact group I 10 or static contact group II 8 or centrally located, every Design method from cutter mechanism 1 is compact-sized, while contact system uses distributed contact mode, and is connect for plane contact or point It touches, increases contact area of the fingertip with the row of connection, effectively avoid or reduce because current convergence generates heat, substantially increase current-carrying Ability, KA Rms ability and service life time limit；And the copper bar 12 is designed with down close to the side of moving contact group 9 Angle so that moving contact component 9 reduces with the 12 combined floodgate resistance of copper bar of static contact group I 10 or static contact group II 8, and then also may make Motor load gentle transition.Further, as shown in figure 8, the touchpad assembly 15 includes the clamping plate of two parallel intervals setting 39, two fingertip plates 41 disposed in parallel between two clamping plates 39, and positioned at the spring between clamping plate 39 and fingertip plate 41 Piece 40 and backing plate 45, the reed 40 are plugged on the fingertip plate 41, pass through support shaft 42 between two fingertip plates 41 It is spaced and fixes with the support sleeve 43 being arranged in support shaft 42,7 end of the link mechanism is fixed on support sleeve 43, institute It states and is bolted to connection between clamping plate 39 and fingertip plate 41, the spacing distance between two fingertip plates 41 is less than described 12 thickness of copper bar, the fixed plate 14 are clamped between two 41 one ends of fingertip plate, and the fingertip 44 has multiple, and edge Setting arranged in a straight line is in two fingertip plates, 41 medial end, touchpad assembly 15 and static contact group I 10 or the static contact of the moving contact group 9 When the copper bar 12 of group II 8 carries out combined floodgate work, the copper bar 12 of static contact group I 10 or static contact group II 8 can be inserted into two fingertip plates 41 Between and the realization that is in contact with the fingertip 44 being distributed with two fingertip plates, 41 end electrically conduct, between clamping plate 39 and fingertip plate 41 By the thickness of backing plate 45, to control, its initial compression amount provides initial pressure to multiple reeds 40 for fingertip plate 41 and copper bar 12 is real Existing Multi-contact, such arrangement have the advantages that compact-sized；And during fingertip plate 41 and copper bar 12 completely attach to, fingertip Plate 41 keeps the chucking power between two fingertip plates 41 by further compression spring 40, ensures that fingertip plate 41 is complete with copper bar 12 It is complete reliably in electrical contact.

As a kind of specific implementation mode, the motor-operating mechanism 3 provides power drive for disconnecting switch, and structure is such as Shown in Fig. 4, including electric baseboard and the motor 23 being arranged on electric baseboard, 23 output shaft end of the motor and transmission shaft 6 connect It connects, drives transmission shaft 6 to rotate by motor 23, to drive cam mechanism and isolation cutter mechanism 1 to move synchronously.And in order to realize To being accurately positioned in moving process of moving contact group 9 in isolation cutter mechanism 1, the motor-operating mechanism 1 further includes gear-stopping bar 18 and pin 26, the gear-stopping bar 18 is arranged perpendicular to the axial direction of transmission shaft 6, and one end of gear-stopping bar 18 is fixed on biography On moving axis 6, the pin 26 is fixed on electric baseboard, and the distance between pin 26 and transmission shaft 6 are less than only The length of bar 18, transmission shaft 6 is during driving the moving contact group 9 of cam mechanism and isolation cutter mechanism 1 to move synchronously, backstop Pin 26 can pair gear-stopping bar 18 rotated synchronously with transmission shaft 6 stop, and then the movement of moving contact group 9 is positioned, into One step improves the positional precision of the tri-station isolating switch.

As a kind of specific embodiment, as shown in Fig. 1, Fig. 5, Fig. 6 and Fig. 7, the manual operation integrates assembly 4 and wraps Operation panel 29 is included, 29 side of the operation panel is provided with locking switch position button 30, operation handle 31, sign 32, position of the switch lock button 28, anti-error behaviour lock button 27, and 29 other side of operation panel is provided with position of the switch lock 38, anti-error behaviour Lock 37, manual unlocking auxiliary switch 36 and electronic unlock auxiliary switch 34,30 bottom of locking switch position button are provided with Reaction spring 35, the operation handle 31 are connect with the gear mechanism, and gear mechanism work, tooth are controlled by operation handle 31 It takes turns mechanism driving and drives motor 23 that transmission shaft 6 is driven to rotate, it is ensured that in the case where motor-operating mechanism 3 fails, this three Station disconnecting switch can work normally；Specifically, the gear mechanism includes drive bevel gear 33 and driven wheel of differential 25, it is described Driven wheel of differential 25 is sequentially connected with motor 23, and the drive bevel gear 33 is connected to the end of operation handle 31, in electronic behaviour Make mechanism 3 fail in the case of, by operation handle 31 control drive bevel gear 33 push down on by be located at working position with it is driven Bevel gear 25 engages, and then drives motor 23 that transmission shaft 6 is driven to rotate, and realizes the manual operation state of disconnecting switch, on the contrary, every After leaving pass in place, pull-up operation handle 31 simultaneously drives drive bevel gear 33 to rise and disconnects and being engaged with driven wheel of differential 25, Drive bevel gear 33 is located at inoperative position；The position of the switch lock 38 is correspondingly arranged with position of the switch lock button 28, the position of the switch Lock 38 is connect with electronic unlock auxiliary switch 34, and anti-error behaviour's lock 37 is locked button 27 with anti-error behaviour and is correspondingly arranged, anti-error behaviour's lock 37 connect with manual unlocking auxiliary switch 36, the manual unlocking auxiliary switch 36 and electronic unlock auxiliary switch 34 with it is electronic Operating mechanism 3 is electrically connected, and the sign 32 is electrically connected with auxiliary switch signal group 17.After 38 unlock of lock of the position of the switch, Electronic unlock auxiliary switch 34 provides unlocking signal and connects the switch control circuit of motor 23, while locking switch position button 30 automatically spring open under the effect of 35 counter-force of reaction spring, and disconnecting switch can carry out electric operating；When 37 unlock of anti-error behaviour lock, operation Handle 31 can drive drive bevel gear 33 to push down on, and be engaged with driven wheel of differential 25, while in anti-error behaviour 37 unlock of lock Manual unlocking auxiliary switch 36 is triggered, the control loop of motor 23 is disconnected, realizes disconnecting switch manual operation；On the contrary, keeping apart After closing in place, pull-up operation handle 31 simultaneously drives drive bevel gear 33 to rise, and disconnects driving and driven bevel gear engagement, and lock anti- Accidentally behaviour's lock 37, manual unlocking auxiliary switch 36 resets；Lower switch position lock button 28 and locking switch position lock 38 are pressed, it is electronic Auxiliary switch 34 is unlocked to reset.The manual operation, which integrates assembly 4, can realize disconnecting switch During manual operation, locking isolating switch Position, and indicate disconnecting switch position, it can also be interlocked and be permitted by manual unlocking auxiliary switch 36 and electronic unlock auxiliary switch 34 Perhaps disconnecting switch realizes electric operating process.And optimize, the motor-operating mechanism 3 includes locating piece 24, the positioning 24 one end of block is fixed on transmission shaft 6, and the other end is equipped with locks 37 corresponding card slots with anti-error behaviour, and locating piece 24 is used for anti- Accidentally behaviour's lock 37 is accurately positioned.

In conclusion this tri-station isolating switch provided by the utility model is opened using isolation cutter mechanism and auxiliary signal Pass group realizes the mutual conversion that two-way high-voltage power circuit is closed or disconnects, and using hierarchical design and modularized design, has layer It is secondary it is clearly demarcated, simple and compact for structure, conversion quickly and high reliability.

It is exemplified as above be only to the utility model for example, not constituting to the scope of protection of the utility model Limitation, it is every to be belonged within the scope of protection of the utility model with the same or analogous design of the utility model.

Claims (10)

1. a kind of tri-station isolating switch, it is characterised in that：Including set gradually from the bottom to top isolation cutter mechanism (1), control Loop mechanism (2), motor-operating mechanism (3) and manual operation integrate assembly (4), and the motor-operating mechanism (3) passes through transmission Axis (6) connects control loop mechanism (2) and isolation cutter mechanism (1)；

The isolation cutter mechanism (1) includes static contact group I (10), static contact group II (8) and moving contact group (9), the static contact I (10) of group and static contact group II (8) are symmetrically distributed in moving contact group (9) both sides, and the moving contact group (9) passes through link mechanism (7) it is rotatablely connected with transmission shaft (6)；

The control loop mechanism (2) includes the cam mechanism being socketed on transmission shaft (6) and is arranged in cam mechanism both sides Auxiliary switch signal group (17), the auxiliary switch signal group (17) are electrically connected by line bank (5) with external control system；

The manual operation integrates assembly (4) and is connect with motor-operating mechanism (3) by gear drive.

2. tri-station isolating switch as described in claim 1, it is characterised in that：The link mechanism (7) includes driving lever (21) it is connect with transmission shaft (6) with follower lever (16), the driving lever (21), the follower lever (16) connects with moving contact group (9) It connects, it is hinged by pivot pin (22) between the driving lever (21) and follower lever (16).

3. tri-station isolating switch as described in claim 1, it is characterised in that：The cam mechanism includes along transmission shaft (6) The cam I (19) and cam II (20) being axially distributed, the cam I (19) and cam II (20) and auxiliary switch signal group (17) Contact be in contact.

4. tri-station isolating switch as described in claim 1, it is characterised in that：The motor-operating mechanism (3) includes motor Bottom plate and the motor (23) being arranged on electric baseboard, motor (23) output shaft end are connect with transmission shaft (6).

5. tri-station isolating switch as claimed in claim 4, it is characterised in that：The motor-operating mechanism (3) further includes stopping Bar (18) and pin (26), the gear-stopping bar (18) is arranged perpendicular to the axial direction of transmission shaft (6), and gear-stopping bar (18) One end be fixed on transmission shaft (6), the pin (26) is fixed on electric baseboard, and pin (26) with transmission The distance between axis (6) is less than the length of gear-stopping bar (18).

6. tri-station isolating switch as described in claim 1, it is characterised in that：The manual operation integrates assembly (4) Operation panel (29), operation panel (29) side are provided with locking switch position button (30), operation handle (31), instruction (32), position of the switch lock button (28), anti-error behaviour lock button (27) are identified, operation panel (29) other side is provided with the position of the switch Lock (38), anti-error behaviour locks (37), manual unlocking auxiliary switch (36) and electronic unlock auxiliary switch (34), the locking switch position It sets button (30) bottom and is provided with reaction spring (35), the operation handle (31) connect with the gear drive, described The position of the switch is locked (38) and is correspondingly arranged with position of the switch lock button (28), and (38) and electronic unlock auxiliary switch are locked in the position of the switch (34) it connects, the anti-error behaviour locks (37) and is correspondingly arranged with anti-error behaviour lock button (27), and anti-error behaviour locks (37) and manual unlocking is auxiliary Switch (36) is helped to connect, the manual unlocking auxiliary switch (36) and electronic unlock auxiliary switch (34) are and motor-operating mechanism (3) it is electrically connected, the sign (32) is electrically connected with auxiliary switch signal group (17).

7. tri-station isolating switch as claimed in claim 6, it is characterised in that：The gear drive includes active conical tooth (33) and driven wheel of differential (25) are taken turns, the driven wheel of differential (25) is sequentially connected with motor (23), the drive bevel gear (33) it is connected to the end of operation handle (31), controlling drive bevel gear (33) by operation handle (31) is located at working position and non- Working position, the drive bevel gear (33) are engaged in working position with driven wheel of differential (25), and drive bevel gear (33) is in inoperative Position is disconnected with driven wheel of differential (25).

8. tri-station isolating switch as claimed in claim 6, it is characterised in that：The motor-operating mechanism (3) includes fixed Position block (24), described locating piece (24) one end are fixed on transmission shaft (6), and the other end is equipped with corresponding with anti-error behaviour lock (37) Card slot.

9. tri-station isolating switch as described in claim 1, it is characterised in that：The static contact group I (10) and static contact group II (8) include copper bar (12) on fixed contact pedestal (11) of fixed contact pedestal (11) and setting, the static contact group I (10) and quiet The copper bar (12) of sets of contacts II (8) is located at same level setting, and the copper bar (12) has close to the side of moving contact group (9) Chamfering；The moving contact group (9) includes movable contact block (13), fixed plate (14) on movable contact block (13) is set and with it is solid The touchpad assembly (15) of fixed board (14) one end rotation connection, the touchpad assembly (15) are located at same level with copper bar (12) Setting, touchpad assembly (15) are equipped with and copper bar (12) phase with static contact group I (10) or the corresponding one end contacted of static contact group II (8) The fingertip (44) of contact, touchpad assembly (15) middle part are connect by link mechanism (7) with transmission shaft (6).

10. tri-station isolating switch as claimed in claim 9, it is characterised in that：The touchpad assembly (15) includes two flat The clamping plate (39) of between-line spacing setting, two fingertip plates (41) disposed in parallel between two clamping plates (39), and positioned at pressing from both sides Reed (40) between plate (39) and fingertip plate (41) and backing plate (45), the reed (40) are plugged on the fingertip plate (41) On, it is spaced by support shaft (42) and the support sleeve (43) being arranged in support shaft (42) between two fingertip plates (41) Fixed, link mechanism (7) end is fixed on support sleeve (43), passes through between the clamping plate (39) and fingertip plate (41) Bolt is fixedly connected, and the spacing distance between two fingertip plates (41) is less than the copper bar (12) thickness, the fixed plate (14) be clamped between two fingertip plate (41) one ends, the fingertip (44) have it is multiple, and along it is arranged in a straight line setting exist Two fingertip plate (41) medial ends.