CN110931286B - Switchgear and three-position switch and circuit breaker interlocking device thereof - Google Patents
Switchgear and three-position switch and circuit breaker interlocking device thereof Download PDFInfo
- Publication number
- CN110931286B CN110931286B CN201911071664.6A CN201911071664A CN110931286B CN 110931286 B CN110931286 B CN 110931286B CN 201911071664 A CN201911071664 A CN 201911071664A CN 110931286 B CN110931286 B CN 110931286B
- Authority
- CN
- China
- Prior art keywords
- operating handle
- circuit breaker
- locking piece
- locking
- position switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a switch device and a three-position switch and circuit breaker interlocking device thereof, which comprises a side plate and a cam rotationally assembled on the side plate and linked with the three-position switch, wherein the side plate is also articulated with a linking rod in transmission connection with the circuit breaker, the cam is provided with a locking concave part which is in limit fit with the linking rod along the rotation direction of the cam when the circuit breaker is switched on to lock the three-position switch and a locking convex part which locks the circuit breaker to a brake-off position when the three-position switch is at a non-working position, the invention also comprises a three-position operating handle which is in inserted connection with a three-position operating shaft to stop rotation, the side plate is movably provided with an in-place confirmation locking part in transmission connection with the linking rod, so as to drive the in-place confirmation locking piece to lock the operating handle lock when the three-position switch is in the working position, and when the three-position switch is in a non-working position, the three-position switch drives the in-position confirmation locking piece to move so as to release the locking of the three-position operating handle. The cam only needs to be matched with the interlocking rod and only forms a group of locking matching structures, and the structure of the interlocking device is simplified.
Description
Technical Field
The invention relates to a switch device and a three-position switch and circuit breaker interlocking device thereof.
Background
The three-position switch and the breaker are two kinds of switch devices which are matched with each other and used in the switch equipment. In practical application, the operation between the three-position switch and the breaker is required to be interlocked so as to realize mechanical locking between the three-position switch and the breaker, so that a specific opening and closing relationship is ensured between the three-position switch and the breaker, and the specific mechanical locking function and the specific opening and closing relationship are as follows: the circuit breaker is locked when the three-position switch is in a non-working position, so that the circuit breaker cannot perform closing operation, the three-position switch is prevented from being burnt out, and the three-position switch is locked when the circuit breaker is in a closing state, so that the three-position switch cannot reach the non-working position from the working position. Meanwhile, in-place confirmation can be realized when the three-position switch is manually operated to reach the working position. To achieve the above object, the prior art generally provides a linkage between a three-position switch and a circuit breaker.
For example, the chinese patent application with the application publication No. CN107527759A, which is a three-position switch and a circuit breaker, is provided with an interlocking device, the interlocking device comprises a side plate and a cam device rotatably arranged on the side plate and in transmission connection with the three-position switch, the cam device is of a double-layer structure along the axial direction thereof, the outer layer is an interlocking cam, the inner layer is an in-place confirmation cam, correspondingly, the side plate is further rotatably provided with a link lever, the free end of the link lever is connected with the circuit breaker, when the circuit breaker is closed, the interlocking cam can be matched with a link lever stopper to lock the three-position switch, when the three-position switch is in a non-working position, the link lever is pushed to lock the circuit breaker to a brake-off position, besides the link lever, an in-place confirmation lever is specially arranged, the in-place confirmation lever is matched with the in-place confirmation cam, when the three-position switch is in the working position, the in-place confirmation lever is rotated to the free end to be locked and matched with a three-position operating handle, the in-place confirmation is realized, and when the three-position switch is in a non-working position, the in-place confirmation rod is jacked up to release the clamping of the three-position operating handle. Because the in-place confirming rod is specially arranged, the cam device needs to be provided with two parts of an interlocking cam and a confirming cam which correspond to the in-place confirming rod and the interlocking rod, and two corresponding groups of locking structures are formed with the in-place confirming rod and the interlocking rod, so that the structure of the whole interlocking device is complex.
Disclosure of Invention
The invention provides a three-position switch and circuit breaker interlocking device, which aims to solve the problem that the existing interlocking device is complex in structure because a cam device with a complex structure is required to be arranged and two groups of locking structures are formed; meanwhile, the invention also aims to provide a switch device using the three-position switch and circuit breaker interlocking device.
In order to achieve the purpose, the technical scheme of the three-position switch and circuit breaker interlocking device is as follows:
the three-station switch and circuit breaker interlocking device comprises a side plate and a cam which is rotatably assembled on the side plate and is used for being interlocked with the three-station switch, the side plate is also hinged with a connecting lock rod which is used for being in transmission connection with the circuit breaker, the cam is provided with a locking concave part which is used for being in limit fit with the connecting lock rod along the rotation direction of the cam when the circuit breaker is switched on so as to lock the three-station switch and a locking convex part which is used for locking the circuit breaker to a brake-off position when the three-station switch is in a non-working position, the three-station switch and circuit breaker interlocking device also comprises a three-station operating handle which is inserted into a three-station operating shaft for rotation stopping fit, an in-position confirmation locking part is movably arranged on the side plate, and the in-position confirmation locking part is in transmission connection with the connecting lock rod, so as to drive the three-position switch to be in place when the three-position switch is in the working position to confirm that the locking piece moves to be matched with the three-position operating handle in a locking way, and when the three-position switch is in a non-working position, the three-position switch drives the in-position confirmation locking piece to move so as to release the locking of the three-position operating handle.
The technical scheme of the three-station switch and circuit breaker interlocking device has the advantages that: the locking piece is confirmed to be in place and matched with the linkage rod in a transmission mode, the linkage rod drives the locking piece to be in place and confirmed to move so as to release locking of the three-station operating handle, correspondingly, the cam only needs to be provided with locking protrusions and concave parts matched with the linkage rod, a group of locking matching structures are formed with the linkage rod, the number of groups of the locking matching structures is reduced while the structure of the cam is simplified, and therefore the structure of the three-station switch and circuit breaker interlocking device is simplified.
Furthermore, in order to confirm the assembly of the locking piece on the side plate in place conveniently, the locking piece is articulated on the side plate in place, and the movable end far away from the articulated end on the locking piece is confirmed in place and is used for cooperating with the locking of the three-position switch operating handle when the three-position switch is in the working position, so that the relative position of the locking piece and the three-position switch operating handle can be confirmed in place conveniently, and the assembly efficiency is improved.
Furthermore, in order to limit the three-position operating handle from releasing after the three-position operating handle is coupled with the three-position operating shaft, a limit link mechanism which limits the three-position operating handle from releasing after the three-position operating handle is coupled with the three-position operating shaft is arranged on the side plate, one of the hinge points of the limit link mechanism is a fixed hinge point fixed relative to the side plate, the other one of the hinge points is a locking piece matched hinge point which synchronously moves with the movable end of the locking piece for confirming in-place, two connecting rods which are hinged and connected are hinged between the locking piece matched hinge point and the fixed hinge point, the hinge point of the two connecting rods, the locking piece matched hinge point and the hinge axis of the fixed hinge point are parallel, the locking piece matched hinge point moves towards the direction far away from the fixed hinge point when the locking piece and the three-position operating shaft are confirmed in place to release the locking relation between the locking piece and the three-position operating shaft, so that after the locking piece and the three-position operating handle are confirmed in-place to release the locking relation, the connecting rod hinged between the fixed hinge point and the matched hinge point of the locking piece is axially limited and matched with the inserted three-position operating handle to limit the separation of the three-position operating handle and the three-position operating shaft.
Furthermore, in order to ensure reliable synchronism of the motion of the limiting link mechanism and the in-place confirmation locking piece, the limiting link mechanism is in transmission connection with the in-place locking piece.
Further, in order to accurately ensure the synchronism of the movement of the position limiting link mechanism and the in-place confirmation locking piece, the position limiting link mechanism comprises a mechanism operating handle, and the mechanism operating handle penetrates through the movable end of the in-place confirmation locking piece.
Furthermore, in order to perform emergency manual operation when the three-position switch is in a non-working position, the linkage rod is provided with an elastic piece which applies acting force to the in-position confirmation locking piece and the limiting link mechanism when the three-position switch is in the non-working position so that the in-position confirmation locking piece releases the locking effect on the three-position operating handle, and meanwhile, the locking piece of the limiting link mechanism is matched with the hinge point to move towards the direction far away from the fixed hinge point so as to limit the separation of the three-position operating handle and the three-position operating shaft.
Further, in order to improve the convenience of operation, lift up the interlocking rod when lifting up to confirm the locking piece in position, locking piece cooperation pin joint still articulates has the mechanism connecting rod of being connected with the interlocking rod transmission, and the mechanism connecting rod passes through the slot hole and is connected with the interlocking rod, on spacing link mechanism was connected to elastic component one end, the other end was connected on the interlocking rod.
Furthermore, in order to facilitate the manual unlocking of the in-position confirmation locking piece to the three-position operating handle, the in-position confirmation locking piece is provided with a manual unlocking part used for unlocking the in-position confirmation locking piece and the three-position operating handle.
Further, in order to realize that the interlock pole is connected with the transmission of circuit breaker to improve the security of linkage device operation, linkage device still includes the circuit breaker connecting rod of being connected with the interlock pole transmission, and the circuit breaker connecting rod passes through the slot hole and is connected with the interlock pole, still articulated on the curb plate have be used for blockking the valve that three station operating handle got into, the valve has the part that blocks that is used for blockking three station operating handle and is used for pushing away the circuit breaker connecting rod is in order to restrict the top that the circuit breaker closed a floodgate after the valve is opened and partly.
The technical scheme of the switch device in the invention is as follows:
the switch equipment comprises a circuit breaker, a three-position switch and a linkage device, wherein the linkage device comprises a side plate and a cam which is rotatably assembled on the side plate and is used for being linked with the three-position switch, the side plate is also hinged with a linkage rod which is used for being in transmission connection with the circuit breaker, the cam is provided with a locking concave part which is used for being in limit fit with the linkage rod along the rotation direction of the cam when the circuit breaker is switched on so as to lock the three-position switch and a locking convex part which is used for locking the circuit breaker to a switching-off position when the three-position switch is at a non-working position, the three-position switch and circuit breaker linkage device also comprises a three-position operating handle which is in plug-in rotation fit with a three-position operating shaft, an in-position confirmation locking part is movably arranged on the side plate and is in transmission connection with the linkage rod so as to drive the in-position confirmation locking part to move to be matched with the locking of the three-position operating handle, and when the three-position switch is in a non-working position, the three-position switch drives the in-position confirmation locking piece to move so as to release the locking of the three-position operating handle.
The technical scheme of the switch equipment has the beneficial effects that: the locking piece is confirmed to be in place and is in transmission fit with the linkage rod, the linkage rod drives the locking piece to be in place and confirms to move so as to release locking of the three-station operating handle, correspondingly, the cam only needs to be provided with locking protrusions and concave parts matched with the linkage rod, a group of locking fit structures are formed with the linkage rod, the number of groups of locking fit structures is reduced while the structure of the cam is simplified, and therefore simplification of the structure of the switch device is achieved.
Furthermore, in order to confirm the assembly of the locking piece on the side plate in place conveniently, the locking piece is articulated on the side plate in place, and the movable end far away from the articulated end on the locking piece is confirmed in place and is used for cooperating with the locking of the three-position switch operating handle when the three-position switch is in the working position, so that the relative position of the locking piece and the three-position switch operating handle can be confirmed in place conveniently, and the assembly efficiency is improved.
Furthermore, in order to limit the three-station operating handle from releasing after the three-station operating handle is coupled with the three-station operating shaft, a limit link mechanism which limits the three-station operating handle from releasing after the three-station operating handle is coupled with the three-station operating shaft is arranged on the side plate, one of the hinge points of the limit link mechanism is a fixed hinge point fixed relative to the side plate, the other one is a locking piece matched hinge point which synchronously moves with the movable end of the locking piece for confirming in-place, two connecting rods which are hinged and connected are hinged between the locking piece matched hinge point and the fixed hinge point, the hinge point of the two connecting rods, the locking piece matched hinge point and the hinge axis of the fixed hinge point are parallel to each other, the locking piece matched hinge point moves towards the direction far away from the fixed hinge point when the locking piece and the three-station operating handle are confirmed in-place to release the locking relation between the locking piece and the three-station operating handle, so that after the locking piece and the three-station operating handle are confirmed in-place to release the locking relation, the connecting rod hinged between the fixed hinge point and the matched hinge point of the locking piece is axially limited and matched with the inserted three-position operating handle to limit the separation of the three-position operating handle and the three-position operating shaft.
Furthermore, in order to ensure reliable synchronism of the motion of the limiting link mechanism and the in-place confirmation locking piece, the limiting link mechanism is in transmission connection with the in-place locking piece.
Further, in order to accurately ensure the synchronism of the movement of the position limiting link mechanism and the in-place confirmation locking piece, the position limiting link mechanism comprises a mechanism operating handle, and the mechanism operating handle penetrates through the movable end of the in-place confirmation locking piece.
Furthermore, in order to perform emergency manual operation when the three-position switch is in a non-working position, the linkage rod is provided with an elastic piece which applies acting force to the in-position confirmation locking piece and the limiting link mechanism when the three-position switch is in the non-working position so that the in-position confirmation locking piece releases the locking effect on the three-position operating handle, and meanwhile, the locking piece of the limiting link mechanism is matched with the hinge point to move towards the direction far away from the fixed hinge point so as to limit the separation of the three-position operating handle and the three-position operating shaft.
Further, in order to improve the convenience of operation, lift up the interlocking rod when lifting up to confirm the locking piece in position, locking piece cooperation pin joint still articulates has the mechanism connecting rod of being connected with the interlocking rod transmission, and the mechanism connecting rod passes through the slot hole and is connected with the interlocking rod, on spacing link mechanism was connected to elastic component one end, the other end was connected on the interlocking rod.
Furthermore, in order to facilitate the manual unlocking of the in-position confirmation locking piece to the three-position operating handle, the in-position confirmation locking piece is provided with a manual unlocking part used for unlocking the in-position confirmation locking piece and the three-position operating handle.
Further, in order to realize that the interlock pole is connected with the transmission of circuit breaker to improve the security of linkage device operation, linkage device still includes the circuit breaker connecting rod of being connected with the interlock pole transmission, and the circuit breaker connecting rod passes through the slot hole and is connected with the interlock pole, still articulated on the curb plate have be used for blockking the valve that operating handle got into, the valve has the part that blocks that is used for blockking operating handle and is used for pushing away the circuit breaker connecting rod is in order to limit the top that the circuit breaker closed a floodgate after the valve is opened the top part.
Drawings
Fig. 1 is a schematic front view of a three-position switch and circuit breaker interlocking device according to a first embodiment of the present application;
fig. 2 is a schematic back side view of a first embodiment of a three-position switch and circuit breaker interlocking device according to the present application;
FIG. 3 is a schematic view of the cooperation of a three-position operating handle and a limiting link mechanism;
FIG. 4 is a simplified mechanical schematic diagram of the three position switch of the interlock device of FIG. 1 in the operating position with the shutter closed;
FIG. 5 is a simplified mechanical schematic of the three position switch of the interlock device of FIG. 1 in the operating position with the shutter open;
FIG. 6 is a simplified mechanical schematic diagram of the three position switch of the interlock device of FIG. 1 in a non-operative position with the shutter closed;
fig. 7 is a simplified mechanical schematic of the three position switch of the interlock device of fig. 1 in the inoperative position with the shutter open.
In the figure: 1. a cam; 2. a interlock lever; 3. a breaker link; 31. a roller; 4. a in-place confirmation locking piece; 41. a mechanism operating handle; 42. a stopper portion; 5. a first link; 6. a mechanism link; 7. a mechanism link return spring; 8. a second link; 9. a third link; 10. a fourth link; 11. a three-position operating handle; 12. a shutter; 121. a trigger end; 13. a circuit breaker link return spring; 14. a side plate; 15, grooves; 16. a three-station operating shaft; 17. and a roller of the interlocking rod.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In embodiment 1 of the switchgear of the present invention, the switchgear includes a circuit breaker, a three-position switch, and a three-position switch and circuit breaker interlocking device that performs an interlocking action between the circuit breaker and the three-position switch, where the structure of the three-position switch and circuit breaker interlocking device is as shown in fig. 1 to 7.
Fig. 1 and 2 show the front and back configurations of the three-position switch and circuit breaker interlock from front and back angles, respectively. As can be seen from fig. 1 and 2, the interlocking device includes a side plate 14, a cam 1, an interlock lever 2, and a position confirmation lock 4. The side plate 14 is a base body of the interlocking device, and the contour shape thereof is adaptively set according to the practical application environment and the purpose of material saving, and in this embodiment, the side plate 14 is a flat plate structure.
The cam 1 is rotatably assembled on the side plate 14 and is in transmission connection with the three-position switch, and the cam 1 is specifically assembled on the rear plate surface of the side plate 14 along with the rotation of the three-position switch. The cam 1 is provided with a locking concave part which is used for being in limit fit with the interlocking rod 2 along the rotation direction of the cam 1 when the circuit breaker is closed so as to lock the three-position switch, and a locking convex part which is used for locking the circuit breaker to an opening position when the three-position switch is in a non-working position. Correspondingly, the interlocking rod 2 is provided with an interlocking rod roller 17, when the concave part of the cam 1 is matched with the interlocking rod 2, the interlocking rod roller 17 can fall into the concave part of the cam 1 to realize stable limiting, and meanwhile, the arrangement of the interlocking rod roller 17 converts the sliding friction force between the interlocking rod 2 and the cam 1 into rolling friction force. Of course, in other embodiments, the interlock lever roller may not be provided without regard to wear of the cam and the interlock lever by frictional force between the cam and the interlock lever.
The interlocking rod 2 is in transmission connection with the circuit breaker and is hinged to the side plate 14 to rotate relative to the side plate 14, and the interlocking rod 2 is provided with a three-position locking position matched with the locking concave part of the cam 1 and a circuit breaker locking position matched with the locking convex part of the cam 1 on a rotating path. Specifically, when the circuit breaker is in a closing state, the circuit breaker can pull the linkage rod 2 to reach a three-position switch locking position through a transmission connection relation, so that the three-position switch cannot rotate, the circuit breaker is locked on the three-position switch in the closing state, and the three-position switch is prevented from reaching a non-working position; similarly, when the three-position switch is in a non-working position, the convex part of the cam 1 jacks the linkage rod 2, so that the linkage rod 2 cannot be pulled by the breaker, the breaker is ensured not to be switched on, the locking of the breaker when the three-position switch is in the non-working position is realized, and the breaker is prevented from being switched on.
In this embodiment, realize the transmission through setting up circuit breaker connecting rod 3 on curb plate 14 between interlock pole 2 and the circuit breaker and connect, it is specific, seted up the slot hole on the curb plate 14, be provided with on the circuit breaker connecting rod 3 with the curb plate on slot hole complex curb plate pin, the curb plate pin slides and wears to establish in the slot hole on the curb plate 14 to this realizes the direction sliding connection of circuit breaker connecting rod 3 on curb plate 14. One end that circuit breaker connecting rod 3 and interlock pole 2 are connected has the slot hole, and what correspond, interlock pole 2 is last be fixed with circuit breaker connecting rod 3 on the slot hole complex interlock pole pin, the interlock pole pin slides and wears to establish in the slot hole of circuit breaker connecting rod 3, realizes circuit breaker connecting rod 3 and interlock pole 2 swing joint. Of course, the breaker connecting rod and the linkage rod can be in transmission connection through a pull wire.
In this embodiment, a circuit breaker connecting rod reset spring 13 is further connected between the circuit breaker connecting rod 3 and the side plate 14, when the three-position switch is in the non-working position, the interlocking rod 2 is jacked up by the cam 1, the circuit breaker connecting rod reset spring 13 is in the stretching state, when the three-position switch is rotated to the working position from the non-working position, the locking convex part of the cam 1 releases the jacking on the interlocking rod 2, the interlocking rod 2 can reach the locking matching position matched with the locking concave part of the cam 1 under the indirect pulling of the circuit breaker connecting rod reset spring 13, in other embodiments, under the condition that the circuit breaker connecting rod reset spring is not arranged, the interlocking rod falls down by gravity.
The side plate is provided with an operation hole corresponding to the three-position operation handle 11, the three-position operation handle 11 can be coupled with the three-position operation shaft 16, and the three-position operation shaft can be driven to rotate by operating the three-position operation handle 11 so as to realize manual operation of the three-position switch.
And an in-place confirmation locking piece 4 capable of locking the three-position operating handle to limit the three-position operating handle to rotate circumferentially is movably arranged on the side plate 14. As shown in fig. 1, the in-position confirmation locking member 4 is hinged to the side plate 14 and is in transmission connection with the interlocking lever 2, and has a locking position for stopping the forward rotation of the three-position operating handle 11 and an unlocking position for releasing the forward rotation locking of the three-position operating handle 11 in the rotation stroke of the confirmation locking member 4. When the three-position switch is operated, before the three-position switch reaches a working position, the linkage rod 2 is in a state of being jacked up by the locking convex part of the cam 1, the locking part 4 is confirmed to be in an unlocking position under the pulling of the linkage rod 2 when the three-position switch reaches the working position, the locking convex part of the cam 1 is staggered with the linkage rod 2 and does not jack up the linkage rod 2 any more, at the moment, the linkage rod 2 can drive the linkage rod 2 to be in place to confirm that the locking part 4 reaches the locking position to lock the three-position operating handle 11, and therefore the three-position switch can be confirmed to reach the working position.
In this embodiment, the in-place confirmation locking member 4 is a swing rod, one end of the swing rod is hinged to the side plate 14 through a pin, the other end of the swing rod is a movable end, the movable end is provided with a stopping portion 42 which overhangs along the swing direction of the swing rod, so that the swing rod forms an L-shaped structure, correspondingly, a radially extending bayonet lock is arranged on the three-position operating handle 11, after the in-place confirmation locking member 4 reaches the locking position, the stopping portion 42 hooks the bayonet lock to realize forward rotation locking of the three-position operating handle, and the stopping portion 42 is also an unlocking portion for manually releasing the in-place confirmation locking member 4 from locking the three-position operating handle 11.
In other embodiments, the in-place confirmation locking piece can also be arranged on the side plate in a guiding and sliding manner, at this time, the in-place confirmation locking piece can be arranged into a sliding block structure, and the sliding block can be matched with a clamping pin arranged on the three-station operating handle in a stopping manner.
The mechanism operating handle 41 and the linkage rod 2 are in transmission connection, the long hole for enabling the mechanism operating handle 41 to penetrate through and slide relative to the side plate 14 is formed in the side plate 14, one end of the mechanism operating handle 41 penetrates through the corner of the L-shaped in-place confirmation locking piece 4, and the other end of the L-shaped in-place confirmation locking piece 4 penetrates through the long hole to be connected with the mechanism connecting rod 6. The upper end of the mechanism connecting rod 6 is a long hole, the sliding connection between the mechanism connecting rod 6 and the interlocking rod 2 is realized through the matching of the long hole and a corresponding pin on the interlocking rod 2, and a mechanism connecting rod reset spring 7 is connected between the interlocking rod 2 and the mechanism connecting rod 6. The in-position confirmation locking member 4 is in transmission connection with the interlock lever 2 through a transmission structure formed by the mechanism operating handle 41 and the mechanism link 6.
The interlocking device also comprises a limiting connecting rod mechanism. As shown in fig. 2 and 3, the limiting link mechanism in this embodiment is a four-bar link mechanism formed by sequentially connecting a first link 5, a second link 8, a third link 9, and a fourth link 10, wherein one end of the third link 9 and one end of the fourth link 10 are simultaneously hinged on the same position of a side plate 14 to form a fixed hinge point, the other end of the third link 9 and the other end of the fourth link 10 are respectively connected to one end of the second link 8 and one end of the first link 5 through a connecting pin, an arc chute for the connecting pin to slide is formed on the side plate 14, the other ends of the first link 5 and the second link 8 are simultaneously fixed on a mechanism operating handle 41 to form a locking member matching hinge point capable of synchronously moving with the movable end of the in-position confirmation locking member 4, and at this time, the link mechanism and the in-position confirmation locking member 4 share a transmission connection structure to be in transmission connection with the connecting rod 2.
The axis of the connecting pin shaft is parallel to the hinge axis of the matched hinge point and the fixed hinge point of the locking piece. The three-position operating handle 11 passes through the middle of the four-bar linkage. When the locking piece is matched with the hinged point to move upwards, the four-bar linkage mechanism is folded towards the middle, and the third connecting bar 9 and the fourth connecting bar 10 are embedded into the groove 15 on the three-position operating handle 11 to stop the three-position operating handle from being separated.
In other embodiments, the first link 5 and the second link 8 can be used to limit the escape of the three-position operating handle in stop cooperation with the three-position operating handle. Locking piece cooperation pin joint can not set up on mechanism operating handle, and at this moment, the one end that fixed pin joint was kept away from to first connecting rod and second connecting rod forms locking piece cooperation pin joint together through the pin is articulated, and the transmission is connected between locking piece cooperation pin joint and the connecting rod, and at this moment, spacing link mechanism confirms the locking piece through independent transmission connection structure separately and is connected and satisfy with the connecting rod transmission with targetting in place: when the linkage rod moves, the linkage mechanism and the in-place confirmation locking piece can move synchronously.
The interlocking device further comprises a valve 12 fixed on the side plate 14 in a rotating mode through a pin shaft, the valve 12 is a swing door and is provided with a trigger end 121, correspondingly, a roller 31 matched with the trigger end 121 is arranged on the circuit breaker connecting rod 3, when the circuit breaker is switched on, the roller 31 presses the trigger end 121 downwards, the valve 12 cannot be opened and blocks an operation hole, and therefore the three-station operation handle 11 cannot be in manual operation with the three-station operation shaft 16 in a coupling mode. When the breaker is opened, the working state of the valve 12 is not affected, when the valve 12 rotates clockwise and is opened, the roller 31 is in a state pushed by the triggering end 121, the three-position operating handle 11 is coupled with the three-position operating shaft 16, at this time, the three-position operating handle 11 can prevent the valve 12 from being closed, and the roller 31 pushed by the triggering end 121 cannot move downwards, so that the breaker is prevented from being closed. In other embodiments, the shutter may be provided independently, not in driving engagement with the breaker linkage, or the shutter may be omitted.
The construction and principle of the interlocking device will be further explained in connection with its application.
As shown in fig. 5, when the circuit breaker is switched on and the three-position switch is in the operating position, the circuit breaker connecting rod 3 is pulled by the circuit breaker to the bottom end of the long hole on the side plate 14 to be in the reset state, the linkage rod 2 falls into the groove of the cam 1 to lock the cam 1, the mechanism connecting rod 6 and the in-place confirmation locking piece 4 fall along with the linkage rod 2, the in-place confirmation locking piece 4 reaches the locking position to complete the locking of the forward rotation of the three-position operating handle 11, and the circuit breaker is locked to the three-position switch. The first connecting rod 5, the second connecting rod 8, the third connecting rod 9 and the fourth connecting rod 10 move to two sides of the three-position operating handle 11 along the arc-shaped sliding groove of the side plate 14 to avoid opening the manual three-position operating handle 11, however, the roller 31 is driven by the breaker connecting rod 3 to press down the trigger end 121 of the shutter 12, the shutter 12 still cannot be opened and still blocks the three-position operating handle 11, and the three-position operating handle still cannot be inserted, so that three-position operation cannot be performed.
As shown in fig. 6, when the circuit breaker is opened and the three-position switch is in the working position, the circuit breaker releases the pulling of the interlock lever 2, the valve 12 is opened by clockwise manual operation, the trigger end 121 of the valve 12 pushes the roller 31 on the circuit breaker connecting rod 3 to rotate, so that the circuit breaker connecting rod 3 moves upwards to the top end of the long hole of the side plate 14, the three-position operating handle can be inserted, and the manual three-position operating handle 11 is manually operated. When the three-position switch is in the working position, the bayonet lock on the three-position operating handle 11 is still blocked and locked by the stop part 42 on the in-position confirmation locking piece 4, so that the bayonet lock cannot move continuously along the original movement direction; if the locking mechanism needs to rotate forwards continuously, the locking member 4 and the linkage rod 2 need to be confirmed by lifting the mechanism operating handle 41 upwards to drive the mechanism operating handle to reach the unlocking position or the linkage rod 2 needs to be lifted directly to drive the mechanism operating handle to reach the unlocking position for unlocking, and then the locking mechanism can rotate forwards continuously. When the three-position switch reaches the working position and the valve is opened, the mechanism connecting rod falls down, and the in-place confirmation function of manual operation when the three-position switch reaches the working position can be realized through the matching of the bayonet lock and the stopping part. After the in-place confirmation is realized, the three-position operating handle 11 cannot continue to rotate, and when emergency unlocking is needed, external force can directly or indirectly act on the mechanism operating handle 41 to forcibly lift the mechanism operating handle 41, so that the locking of the in-place confirmation locking piece 4 on the three-position operating handle 11 is released, and the emergency unlocking operation is performed. When the three-position operating handle 11 rotates backwards, the three-position switch is judged to reach the working position through the falling of the linkage rod 2, in-place confirmation is realized, and the three-position operating handle 11 is not blocked.
When the shutter 12 is closed by the manual operation in the counterclockwise direction, the trigger end 121 of the shutter 12 moves downward, the pushing action on the cam 31 is reduced, the breaker link 3 is reset under the action of the breaker link reset spring 13, and at the moment, the electric operation of the three-position switch can be realized. Meanwhile, the closing operation can be performed because the breaker link 3 is reset.
As shown in fig. 6, when the three-position switch is in the non-operating position, the link lever 2 is jacked up by the cam 1 and kept in a lifted state, the breaker link lever 3 is driven by the link lever 2 and moves upwards for a certain distance to the top end of the long hole of the side plate 14, and the breaker cannot fall down, so that the three-position switch locks the breaker, and the breaker cannot be switched on. The linkage rod 2 pulls the mechanism link return spring 7 to be in a stretching state, the in-place confirmation locking piece 4 swings upwards by the stretching force of the mechanism link return spring 7, and the locking of the stopping part 42 on the forward rotation of the three-position operating handle 11 is released. The first connecting rod 5, the second connecting rod 8, the third connecting rod 9 and the fourth connecting rod 10 also move to the center of the three-position operating handle 11 along the arc-shaped sliding groove on the side plate 14, and the third connecting rod 9 and the fourth connecting rod 10 block the manual three-position operating handle 11. When the three-position switch is electrically operated, the valve 12 is in a closed state, and the manual three-position operating handle 11 is blocked.
As shown in fig. 7, when the three-position switch is in the non-operating position, the interlock lever 2 is lifted by the cam 1 and is kept in a lifted state, and the breaker link 3 is pulled by the interlock lever 2 and moves upward by a distance from the top end of the long hole of the side plate 14. The three-position switch is used for locking the breaker, and the breaker cannot be switched on. At this time, the valve 12 can be opened by clockwise manual operation, after the valve 12 is opened, the third connecting rod 9 and the fourth connecting rod 10 still block the manual three-position operating handle 11, the manual downward shifting is performed to the proper position, the mechanism operating handle 41 on the locking piece 4 is confirmed to overcome the pulling force of the mechanism connecting rod return spring 7, the third connecting rod 9 and the fourth connecting rod 10 move to two sides of the manual three-position operating handle 11, the manual operating hole on the side plate 14 is exposed, and the three-position operating handle 11 can be inserted into the manual operating hole for manual operation. After the manual dialing force disappears, the mechanism operating handle 41 resets under the action of the mechanism connecting rod return spring 7, the stop part 42 on the locking piece 4 is in a lifted state when the mechanism connecting rod return spring is in place, and the three-position switch cannot be influenced by the clamp pin on the three-position operating handle 11 in the manual operation process of the three-position switch at the non-working position. Meanwhile, the first connecting rod 5, the second connecting rod 8, the third connecting rod 9 and the fourth connecting rod 10 move towards the middle along the sliding grooves in the side plates 14, the three-position operating handle 11 is clamped, and the three-position operating handle 11 is prevented from falling off. When the three-position operating handle 11 is pulled out, the mechanism operating handle 41 on the confirmation locking piece 4 needs to be pushed down to the right position, so that the third connecting rod 9 and the fourth connecting rod 10 move to two sides of the manual three-position operating handle 11, the three-position operating handle 11 is pulled out, the valve 12 is manually operated anticlockwise, and the three-position switch can be electrically operated.
In embodiment 2 of the switching device of the present invention, in the present embodiment, regarding the structure of the three-position switch and circuit breaker interlocking device, the limiting link mechanism for stop-fitting with the three-position operating handle is a two-link mechanism, that is, only two links hinged to each other are disposed between the locking member fitting hinge point and the fixed hinge point.
In this embodiment, for the structure of the three-position switch and circuit breaker interlocking device, in order to stop both forward rotation and reverse rotation of the three-position operating handle, a structure on the three-position switch operating handle, which is matched with the stop portion, is provided as a groove, and the groove specifically is a through groove which extends axially along the three-position operating handle and has an opening facing away from the direction in which the three-position operating handle is pulled out. The in-place confirmation locking piece can also be of a straight rod type structure, the movable end of the straight rod type structure is provided with a U-shaped groove with an opening facing the pulling-out direction of the three-position operating handle, and the U-shaped groove is matched with a radially extending clamping pin arranged on the three-position switch operating handle to realize the limiting of the in-place confirmation locking piece on the circumferential movement of the three-position operating handle.
In the specific embodiment 4 of the switching device, aiming at the structure of the three-position switch and circuit breaker interlocking device, in order to realize the stopping and limiting of the forward rotation and the reverse rotation of the three-position operating handle, in the embodiment, the three-position operating handle is provided with the chuck, the peripheral surface of the chuck is circumferentially provided with a plurality of clamping grooves, the clamping grooves are used for inserting the stopping part of the in-place confirmation locking piece, when the interlocking rod reaches the working position, the stopping part of the in-place confirmation locking piece is inserted into the clamping grooves of the chuck to realize the locking and stopping matching, and at the moment, the forward rotation and the reverse rotation of the three-position operating handle are both limited.
The structure of the three-position switch and circuit breaker interlocking device of the invention is completely the same as that of the three-position switch and circuit breaker interlocking device in the switch equipment, and the detailed description is omitted here.
Claims (10)
1. The utility model provides a three station switches and circuit breaker interlocking device which characterized in that: the three-station switch and circuit breaker interlocking device comprises a side plate and a cam which is rotatably assembled on the side plate and is used for being interlocked with a three-station switch, wherein a linkage rod which is used for being in transmission connection with a circuit breaker is hinged on the side plate, the cam is provided with a locking concave part which is used for being in limit fit with the linkage rod along the rotation direction of the cam when the circuit breaker is switched on so as to lock the three-station switch and a locking convex part which is used for locking the circuit breaker to a switching-off position when the three-station switch is in a non-working position, the three-station switch and circuit breaker interlocking device further comprises a three-station operating handle which is inserted into a three-station operating shaft to be in rotation stopping fit, an in-place confirmation locking part is movably arranged on the side plate, and the in-place confirmation locking part is in transmission connection with the linkage rod, so as to drive the three-position switch to be in place when the three-position switch is in the working position to confirm that the locking piece moves to be matched with the three-position operating handle in a locking way, and when the three-position switch is in a non-working position, the three-position switch drives the in-position confirmation locking piece to move so as to release the locking of the three-position operating handle.
2. The three-position switch and circuit breaker interlock of claim 1, wherein: the in-place confirmation locking piece is hinged to the side plate, and the movable end, far away from the hinged end, of the in-place confirmation locking piece is used for being matched with the three-position switch operating handle in a locking mode when the three-position switch is in the working position.
3. The three-position switch and circuit breaker interlock of claim 2, wherein: the side plate is provided with a limiting connecting rod mechanism which limits the three-station operating handle to be separated after the three-station operating handle is coupled with the three-station operating shaft, one of hinged points of the limiting connecting rod mechanism is a fixed hinged point fixed relative to the side plate, the other is a locking piece matched hinged point which synchronously moves with the movable end of the locking piece after being in place, two connecting rods which are connected in a hinged mode are hinged between the locking piece matched hinged point and the fixed hinged point, the hinged positions of the two connecting rods and the hinged point of the locking piece matched are parallel to the hinged axis of the fixed hinged point, the hinged point of the locking piece matched moves towards the direction far away from the fixed hinged point when the locking piece and the three-station operating handle are confirmed in place to release the locking relation, and after the locking relation between the locking piece and the three-station operating handle is confirmed in place, the connecting rod hinged between the fixed hinged point and the hinged point of the locking piece matched hinged point and the inserted three-station operating handle are axially limited in a matched mode to limit the three-station operating handle and the three-station operating shaft And (5) separating.
4. The three-position switch and circuit breaker interlock of claim 3, wherein: the limiting connecting rod mechanism is in transmission connection with the in-place locking piece.
5. The three-position switch and circuit breaker interlock of claim 4, wherein: the limiting connecting rod mechanism comprises a mechanism operating handle, and the mechanism operating handle penetrates through the movable end of the in-place confirmation locking piece.
6. The three-position switch and circuit breaker interlock as defined in claim 4 or 5, wherein: the linkage rod is provided with an elastic piece which applies acting force to the in-place confirmation locking piece and the limiting link mechanism when the three-position switch is in a non-working position so that the in-place confirmation locking piece releases the locking effect on the three-position operating handle, and meanwhile, the locking piece of the limiting link mechanism is matched with the hinge point to move towards the direction far away from the fixed hinge point so as to limit the separation of the three-position operating handle and the three-position operating hand shaft.
7. The three-position switch and circuit breaker interlock of claim 6, wherein: the locking piece cooperation pin joint still articulates there is the mechanism connecting rod of being connected with the interlocking rod transmission, and the mechanism connecting rod passes through the slot hole and is connected with the interlocking rod, on spacing link mechanism was connected to elastic component one end, the other end was connected on the interlocking rod.
8. The three-position switch and circuit breaker interlock of claim 1, wherein: the in-place confirmation locking piece is provided with a manual unlocking part used for unlocking the in-place confirmation locking piece and the three-position operating handle.
9. The three-position switch and circuit breaker interlock of any one of claims 1, 2, 3, 4, 5, 8, wherein: the interlocking device further comprises a breaker connecting rod connected with the interlocking rod in a transmission mode, the breaker connecting rod is connected with the interlocking rod through a long hole, a valve used for blocking the three-station operating handle to enter is hinged to the side plate, the valve is provided with a blocking part used for blocking the three-station operating handle to enter and a pushing part used for pushing the breaker connecting rod to limit the closing of the breaker after the valve is opened.
10. The utility model provides a switchgear, includes circuit breaker, three-position switch and interlocking device, its characterized in that: the interlocking device is the three-position switch and circuit breaker interlocking device of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071664.6A CN110931286B (en) | 2019-11-05 | 2019-11-05 | Switchgear and three-position switch and circuit breaker interlocking device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071664.6A CN110931286B (en) | 2019-11-05 | 2019-11-05 | Switchgear and three-position switch and circuit breaker interlocking device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110931286A CN110931286A (en) | 2020-03-27 |
| CN110931286B true CN110931286B (en) | 2021-10-22 |
Family
ID=69853280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911071664.6A Active CN110931286B (en) | 2019-11-05 | 2019-11-05 | Switchgear and three-position switch and circuit breaker interlocking device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110931286B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113643910B (en) * | 2021-08-09 | 2022-04-05 | 北京清畅电力技术股份有限公司 | Automatic displacement coaxial structure for GIS three-station isolation mechanism and control method thereof |
| CN113871225B (en) * | 2021-08-20 | 2024-04-09 | 平高集团有限公司 | Three-station operating mechanism and switch cabinet |
| CN114496642A (en) * | 2022-01-12 | 2022-05-13 | 平高集团有限公司 | Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154529A (en) * | 2006-09-29 | 2008-04-02 | 希捷爱斯（上海）电气有限公司 | Direct action type three-station manual operating position locking mechanism |
| CN103325588A (en) * | 2013-07-01 | 2013-09-25 | 北京电研华源电力技术有限公司 | Three-station insulation earthing switch |
| CN204189667U (en) * | 2014-10-28 | 2015-03-04 | 施耐德电器工业公司 | For pressing the mechanical interlocking device of the cable chamber door of ring main unit in two stations |
| CN205282325U (en) * | 2015-11-27 | 2016-06-01 | 平高集团有限公司 | Interlocking device and it should interlocking to use device for switchgear |
| CN209515493U (en) * | 2019-04-23 | 2019-10-18 | 广州东芝白云电器设备有限公司 | A kind of mechanical interlocks |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9490084B2 (en) * | 2014-11-13 | 2016-11-08 | Eaton Corporation | Visible disconnect switch interlock assembly |
| KR101839090B1 (en) * | 2016-11-02 | 2018-04-26 | 엘에스산전 주식회사 | Distributor Door Locking Device of Air circuit Breaker |
-
2019
- 2019-11-05 CN CN201911071664.6A patent/CN110931286B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154529A (en) * | 2006-09-29 | 2008-04-02 | 希捷爱斯（上海）电气有限公司 | Direct action type three-station manual operating position locking mechanism |
| CN103325588A (en) * | 2013-07-01 | 2013-09-25 | 北京电研华源电力技术有限公司 | Three-station insulation earthing switch |
| CN204189667U (en) * | 2014-10-28 | 2015-03-04 | 施耐德电器工业公司 | For pressing the mechanical interlocking device of the cable chamber door of ring main unit in two stations |
| CN205282325U (en) * | 2015-11-27 | 2016-06-01 | 平高集团有限公司 | Interlocking device and it should interlocking to use device for switchgear |
| CN209515493U (en) * | 2019-04-23 | 2019-10-18 | 广州东芝白云电器设备有限公司 | A kind of mechanical interlocks |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110931286A (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110931286B (en) | Switchgear and three-position switch and circuit breaker interlocking device thereof | |
| CN108320946B (en) | Switch cabinet and isolating switch thereof and interlocking device for circuit breaker | |
| CN108172425B (en) | Intelligent circuit breaker modularization operating mechanism | |
| CN106409563A (en) | Circuit breaker and three-position switch interlocking device and circuit breaker-three-position switch device | |
| CN110739165B (en) | Three-position switch operating handle limiting device and three-position switch interlocking device | |
| CN101649701B (en) | Automobile door lock switching mechanism | |
| CN214848453U (en) | Operating mechanism of switch | |
| CN109859972B (en) | Forced interlocking structure for vacuum cabinet | |
| CN115148558A (en) | Operating mechanism of switch | |
| CN209962913U (en) | Dual-power transfer switch capable of being locked in hanging mode | |
| CN215220627U (en) | Locking system of switch operating mechanism | |
| KR101692787B1 (en) | Air circuit breaker | |
| CN110993426A (en) | Circuit breaker interlocking device for solid insulation switch cabinet | |
| CN216389115U (en) | Active prevention type rear door interlocking device | |
| CN107527759B (en) | Three-station-release unit and its interlock | |
| CN106783291A (en) | Breaker and isolator operation interlocking mechanism | |
| KR200469341Y1 (en) | Locking device of elevator door | |
| CN114597084B (en) | Self-locking mechanism for isolating switch | |
| CN216213208U (en) | Toggle system of switch operating mechanism | |
| CN214848438U (en) | Output system of switch operating mechanism | |
| JP4123809B2 (en) | switch | |
| CN218826696U (en) | Synchronizing mechanism of multi-phase switch | |
| CN215220628U (en) | Transmission system of switch operating mechanism | |
| CN215680586U (en) | Driving system of switch operating mechanism | |
| WO2013053308A1 (en) | Fast switching-on mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |