CN111192775B - Switching device and locking interlocking device thereof - Google Patents
Switching device and locking interlocking device thereof Download PDFInfo
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- CN111192775B CN111192775B CN201911328660.1A CN201911328660A CN111192775B CN 111192775 B CN111192775 B CN 111192775B CN 201911328660 A CN201911328660 A CN 201911328660A CN 111192775 B CN111192775 B CN 111192775B
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- 230000007246 mechanism Effects 0.000 claims abstract description 133
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 230000001360 synchronised effect Effects 0.000 claims abstract description 20
- 238000005452 bending Methods 0.000 claims description 25
- 230000000903 blocking effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 238000002955 isolation Methods 0.000 description 15
- 230000009471 action Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
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- 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
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a switchgear and a locking interlock device thereof. A latch interlock for a switchgear comprising: the linkage mechanism comprises a torque transmission mechanism, a synchronous transmission connecting mechanism and a pushing mechanism; the pushing structure is arranged on the closing locking plate; the pushing structure is used for being matched with the torque transmission mechanism in a pushing mode so as to convert the torque of the torque transmission mechanism into pushing force and apply the pushing force to the closing locking plate. On the basis of the prior art, the linkage mechanism is improved and is split into two parts, wherein one part of the interlocking adjusting rod is not directly and mechanically connected with the torque transmission mechanism, but forms a pushing fit relation with a distance (second distance) between the interlocking adjusting rod and a second arm of the torque transmission mechanism, so that a fit clearance is formed between the torque transmission mechanism and the interlocking adjusting rod, and the linkage mechanism can be better prevented from being locked due to assembly errors and manufacturing errors.
Description
Technical Field
The invention relates to a switchgear and a locking interlock device thereof.
Background
In switchgear for power transmission circuits, circuit breakers are common load disconnection devices, and disconnectors and three-position disconnecting and grounding switches are no-load disconnection devices which cannot be disconnected under a load (i.e., power-on) state. For safety reasons, the following strict requirements are placed on the operating timing of the above-mentioned breaking devices: 1. when the isolating switch or the three-station isolating grounding switch is operated, the circuit breaker must be always kept in an opening state and cannot be switched to be closed by opening; 2. under the closing state of the circuit breaker, the isolating switch or the three-station isolating grounding switch cannot be operated. If the actual operation time of the no-load cut-off device deviates from the requirement, serious safety accidents can be caused, and the safety of equipment and operators is threatened. Therefore, in the prior art, a no-load cut-off device (a three-position isolating grounding switch or an isolating switch, the same applies below) needs to be locked and interlocked with a circuit breaker so as to ensure the safety of an operator and equipment.
In the prior art, such a latching interlocking device, as disclosed in chinese patent application publication No. CN110400709A, published as 2019, 11/1/2019, discloses an interlocking device for a circuit breaker and a three-position switch, which includes a valve mechanism and a closing locking plate (i.e., the interlocking plate 9 in this document), where the valve mechanism can open or close a valve, thereby implementing the opening or blocking of a manual operation hole of the three-position switch, and when the manual operation hole of the three-position switch is blocked, a manual operation handle of the three-position switch cannot enter the manual operation hole of the three-position switch to operate the three-position switch. The valve mechanism is in transmission connection with the closing locking plate through the link mechanism, the opening and closing actions of the valve mechanism and the linear movement action of the closing locking plate are correspondingly linked, namely the opening and closing positions of the valve correspond to the first position and the second position of the closing locking plate, and if the closing locking plate cannot move from the second position to the first position due to being blocked, the valve mechanism cannot act to open the valve.
The moving direction of the closing locking plate is provided with two operation stopping structures, when the valve mechanism opens the valve, the closing locking plate is correspondingly positioned at a first position, and at the moment, the first operation stopping structure (namely, the second baffle plate 91 in the document) can shield a closing operation button (namely, the button 5 in the document) of the circuit breaker, so that the closing operation of the circuit breaker mechanism is stopped, and the first operation stopping is realized. When the valve mechanism closes the valve, the closing locking plate is correspondingly positioned at the second position, and the first operation stop is released.
The second operation preventing structure (i.e. the blocking stopper 10 in the document) can be blocked by a closing connecting lever of the circuit breaker in a closing state, the closing connecting lever of the circuit breaker is in transmission connection with the circuit breaker operating mechanism, (the closing connecting lever of the circuit breaker should be a part of a linkage mechanism of the circuit breaker, the operating mechanism does not include the linkage mechanism), when the circuit breaker is closed, the closing connecting lever of the circuit breaker rotates to a blocking position, the second preventing structure can be correspondingly blocked, so that the closing locking plate cannot move to the first position from the second position, and the valve mechanism cannot act to open the valve, thereby realizing second operation prevention, i.e. closing locking. When the breaker is opened, the breaker closing crank arm rotates to a blocking removing position, the blocking of the second blocking structure is removed, the first operation blocking is removed, the closing locking plate can move to the first position from the second position, the valve mechanism can act again, and the valve can be opened to operate the three-station switch.
As mentioned above, since the valve mechanism is in transmission connection with the closing locking plate through the link mechanism, one end of the link mechanism is directly hinged with the valve mechanism, and the other end of the link mechanism is directly hinged with the closing locking plate, since there is basically no fit clearance between the components of the link mechanism, certain assembly and manufacturing errors of the components of the interlocking device inevitably exist, and the position of the circuit breaker operating mechanism may have dislocation due to the relationship of the assembly error or the manufacturing error, the interlocking mechanism may be locked and cannot be used due to the above reasons, the use reliability of the interlocking device is affected, and the potential safety hazard exists in the power transmission line.
Disclosure of Invention
The invention aims to provide a locking interlocking device of switch equipment, which avoids the problem that the interlocking device between a circuit breaker and a no-load cut-off device is locked to cause the problem of incapability of use. A further object of the invention is to provide a switching device which enables reliable operation and which meets the protection requirements of the switching device.
In order to achieve the purpose, the technical scheme of the locking and interlocking device of the switch equipment is as follows: a latch interlock for a switchgear comprising:
the valve mechanism is used for driving a valve on a manual operation hole of a no-load cut-off device of the switch equipment, and the valve is provided with an opening position/closing position for opening/closing the manual operation hole of the no-load cut-off device;
the closing locking plate is used for reciprocating movement along a set track, and a first position and a second position are arranged on a movement stroke; the closing locking plate is connected with a first return spring which drives the closing locking plate to move from a first position to a second position; the closing locking plate comprises a first operation preventing structure; the first operation preventing structure is used for preventing the operation breaker from being switched on when the switching-on locking plate is positioned at a first position;
the second operation preventing structure is arranged on the closing locking plate and is used for being matched with the closing crank arm of the circuit breaker in a stopping way when the closing locking plate is at the second position so as to prevent the closing locking plate from moving from the second position to the first position;
the linkage mechanism is used for linking the valve mechanism and the closing locking plate so that the first position of the closing locking plate corresponds to the valve with an opened position and the second position corresponds to the valve with a closed position;
the linkage mechanism comprises a torque transmission mechanism, a synchronous transmission connecting mechanism and a pushing structure;
the torque transmission mechanism comprises an interlocking rotating shaft, a first arm and a second arm, the interlocking rotating shaft rotates around a set axis, the rotating stroke of the interlocking rotating shaft has a first rotating position and a second rotating position, and the first arm and the second arm are fixed on the interlocking rotating shaft;
one end of the synchronous transmission connecting mechanism is connected with the valve mechanism, the other end of the synchronous transmission connecting mechanism is connected with the second arm, and the synchronous transmission connecting mechanism is used for synchronously transmitting power or resistance between the valve mechanism and the interlocking rotating shaft so that the interlocking rotating shaft synchronously rotates to a first rotating position when the valve mechanism drives the valve to an open position, and synchronously rotates to a second rotating position when the valve mechanism drives the valve to a closed position, and synchronously prevents the valve from moving from the open position to the closed position when the interlocking rotating shaft is blocked from rotating from the second rotating position to the first rotating position;
the pushing structure is arranged on the closing locking plate; the pushing structure is used for being in pushing fit with a first arm of the torque transmission mechanism so as to convert torque generated by rotation of the interlocking rotating shaft into pushing force and apply the pushing force to the closing locking plate.
The locking interlocking device of the switch equipment has the advantages that: on the basis of the prior art, the linkage mechanism is improved and is split into two parts, wherein the synchronous transmission connecting mechanism and the torque transmission mechanism of one part still keep synchronous linkage with the valve mechanism, and the interlocking adjusting rod of the other part is not directly and mechanically connected with the torque transmission mechanism but forms a pushing fit relation with a distance (second distance) between the interlocking adjusting rod and the second arm of the torque transmission mechanism.
Furthermore, the locking and interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with a second end, and the second end forms the pushing structure;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding second distance, and the second distance is the distance between the second end of the interlocking adjusting rod and the first arm when the closing locking plate is at a second position and the interlocking rotating shaft is at a second rotating position.
The interlocking device has the advantages that the distance between the second end of the interlocking adjusting rod and the first arm can be adjusted when the closing locking plate is located at the second position and the interlocking rotating shaft is located at the second rotating position, so that the interlocking device of the switch equipment can be adjusted after being assembled, the problem that a linkage mechanism such as a link mechanism in the prior art is difficult to adjust after being assembled is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or first operation block is removed due to assembly and manufacturing errors, the first distance can be correspondingly adjusted to compensate the manufacturing and assembling errors, the use reliability of the interlocking device of the switch equipment is ensured, and the safety of equipment and operators is ensured.
Furthermore, the locking and interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with a first end, and the first end forms the second operation preventing structure and is used for being matched with the breaker closing crank arm in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at the second position.
The interlocking device has the advantages that the distance between the first end of the interlocking adjusting rod and the circuit breaker closing crank arm can be adjusted when the circuit breaker is closed and the closing locking plate is located at the second position, so that the interlocking device of the switch equipment can be adjusted after being assembled, the problem that a linkage mechanism such as a link mechanism in the prior art is difficult to adjust after being assembled is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or second operation prevention is removed due to assembly and manufacturing errors, the first distance can be correspondingly adjusted to compensate the manufacturing and assembling errors, the use reliability of the interlocking device of the switch equipment is ensured, and the safety of equipment and operators is ensured.
Furthermore, the interlocking adjusting rod is also provided with a first end, and the first end forms the second operation preventing structure and is used for being matched with a closing crank arm of the circuit breaker in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at the second position.
The invention has the advantages that because the torque transmission mechanism and the interlocking adjusting rod are added, the distance between the first end of the interlocking adjusting rod and the closing crank arm of the circuit breaker can be adjusted when the closing and closing locking plate of the circuit breaker is at the second position, and the distance between the second end of the interlocking adjusting rod and the first arm can be adjusted when the interlocking rotating shaft is at the second rotating position when the closing locking plate is at the second position, so the interlocking device of the switch equipment can still be adjusted after the assembly is finished, the problem that the original linkage mechanism such as a link mechanism in the prior art is difficult to adjust after the assembly is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or the first operation block and/or the second operation block are removed due to the assembly and manufacturing errors, the manufacturing and assembly errors can be compensated by correspondingly adjusting the first distance and the second distance of the interlocking adjusting rod, the use reliability of the locking interlocking device of the switch equipment is ensured, so that the safety of the equipment and operators is ensured.
Furthermore, the locking and interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with more than two parts, one of the interlocking adjusting rod is provided with a first end, and the other interlocking adjusting rod is provided with a second end;
the first end forms the second operation preventing structure and is used for being matched with the breaker closing crank arm in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at a second position;
the second end forms the pushing structure;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding second distance, and the second distance is the distance between the second end of the interlocking adjusting rod and the first arm when the closing locking plate is at a second position and the interlocking rotating shaft is at a second rotating position.
The invention has the advantages that because the torque transmission mechanism and the interlocking adjusting rod are added, the distance between the first end of the interlocking adjusting rod and the closing crank arm of the circuit breaker can be adjusted when the closing and closing locking plate of the circuit breaker is at the second position, and the distance between the second end of the interlocking adjusting rod and the first arm can be adjusted when the interlocking rotating shaft is at the second rotating position when the closing locking plate is at the second position, so the interlocking device of the switch equipment can still be adjusted after the assembly is finished, the problem that the original linkage mechanism such as a link mechanism in the prior art is difficult to adjust after the assembly is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or the first operation block and/or the second operation block are removed due to the assembly and manufacturing errors, the manufacturing and assembly errors can be compensated by correspondingly adjusting the first distance and the second distance of the interlocking adjusting rod, the use reliability of the locking interlocking device of the switch equipment is ensured, so that the safety of the equipment and operators is ensured.
Furthermore, the interlocking adjusting rod is an adjusting bolt, and the first end and/or the second end are/is formed by corresponding end parts of the adjusting bolt;
and the closing locking plate is provided with a bolt hole for the thread matching of the adjusting bolt, and the adjusting structure consists of an external thread used for matching with the threaded hole on the adjusting bolt and an internal thread of the threaded hole.
The interlocking device has the advantages of simple structure and reliable determination of the position of the interlocking adjusting rod after adjustment.
Furthermore, the closing locking plate comprises a plate main body and a first bending part vertical to the plate main body, and the plane where the plate main body is located is along the vertical direction; first bending portion body coupling is in the lower extreme of board main part and face perpendicular to upper and lower direction, the screw hole sets up on first bending portion.
The novel closing locking device has the advantages that the closing locking plate is bent to form a setting foundation of the threaded hole, the structure is simple, and the processing and the manufacturing are convenient.
Furthermore, the plate main body is provided with an extension part extending upwards, and when the breaker is in an opening state and the closing locking plate is in a first position, the extension part is used for being matched with a closing tripping plate of the breaker in a blocking mode to prevent the breaker from being operated to be closed; the extension forms the first operation preventing structure.
The first operation preventing structure is formed by a part of the plate main body, and has the advantages of simple structure and convenience in processing.
Furthermore, the periphery of the interlocking rotating shaft is provided with a first groove and a second groove, the bottom groove walls of the first groove and the second groove are parallel to the axis of the interlocking rotating shaft, the first arm is fixed on the bottom groove wall of the first groove through a bolt, and the second arm is fixed on the bottom groove wall of the second groove through a bolt.
The interlocking mechanism has the beneficial effects that the contact areas of the first arm, the second arm and the interlocking rotating shaft are increased, and the reliable connection of the first arm, the second arm and the interlocking rotating shaft is realized.
In order to achieve the purpose, the technical scheme of the switch device is as follows: a switching apparatus, comprising:
the circuit breaker is provided with a circuit breaker closing connecting lever and a closing tripping plate, and the circuit breaker closing connecting lever is provided with positions corresponding to the opening and closing states of the circuit breaker on the swinging stroke of the circuit breaker; the switching-on tripping plate is respectively corresponding to a switching-off position and a switching-on position of the breaker on the swinging stroke, and when the switching-on tripping plate cannot swing from the switching-off position to the switching-on position, the breaker cannot be switched on;
the no-load cut-off device is provided with a manual operating handle and a manual operating hole, and the manual operating handle is inserted into the manual operating hole to operate the no-load cut-off device to act;
a latch interlock comprising: the valve mechanism is used for driving a valve on a manual operation hole of a no-load cut-off device of the switch equipment, and the valve is provided with an opening position/closing position for opening/closing the manual operation hole of the no-load cut-off device;
the closing locking plate is used for reciprocating movement along a set track, and a first position and a second position are arranged on a movement stroke; the closing locking plate is connected with a first return spring which drives the closing locking plate to move from a first position to a second position; the closing locking plate comprises a first operation preventing structure; the first operation preventing structure is used for preventing the operation breaker from being switched on when the switching-on locking plate is positioned at a first position;
the second operation preventing structure is arranged on the closing locking plate and is used for being matched with the closing crank arm of the circuit breaker in a stopping way when the closing locking plate is at the second position so as to prevent the closing locking plate from moving from the second position to the first position;
the linkage mechanism is used for linking the valve mechanism and the closing locking plate so that the first position of the closing locking plate corresponds to the valve with an opened position and the second position corresponds to the valve with a closed position;
the linkage mechanism comprises a torque transmission mechanism, a synchronous transmission connecting mechanism and a pushing structure;
the torque transmission mechanism comprises an interlocking rotating shaft, a first arm and a second arm, the interlocking rotating shaft rotates around a set axis, the rotating stroke of the interlocking rotating shaft has a first rotating position and a second rotating position, and the first arm and the second arm are fixed on the interlocking rotating shaft;
one end of the synchronous transmission connecting mechanism is connected with the valve mechanism, the other end of the synchronous transmission connecting mechanism is connected with the second arm, and the synchronous transmission connecting mechanism is used for synchronously transmitting power or resistance between the valve mechanism and the interlocking rotating shaft so that the interlocking rotating shaft synchronously rotates to a first rotating position when the valve mechanism drives the valve to an open position, and synchronously rotates to a second rotating position when the valve mechanism drives the valve to a closed position, and synchronously prevents the valve from moving from the open position to the closed position when the interlocking rotating shaft is blocked from rotating from the second rotating position to the first rotating position;
the pushing structure is arranged on the closing locking plate; the pushing structure is used for being in pushing fit with a first arm of the torque transmission mechanism so as to convert torque generated by rotation of the interlocking rotating shaft into pushing force and apply the pushing force to the closing locking plate.
The switch device has the advantages that: on the basis of the prior art, the linkage mechanism is improved and is split into two parts, wherein the synchronous transmission connecting mechanism and the torque transmission mechanism of one part still keep synchronous linkage with the valve mechanism, and the interlocking adjusting rod of the other part is not directly and mechanically connected with the torque transmission mechanism but forms a pushing fit relation with a distance (second distance) between the interlocking adjusting rod and the second arm of the torque transmission mechanism.
Furthermore, the locking and interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with a second end, and the second end forms the pushing structure;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding second distance, and the second distance is the distance between the second end of the interlocking adjusting rod and the first arm when the closing locking plate is at a second position and the interlocking rotating shaft is at a second rotating position.
The interlocking device has the advantages that the distance between the second end of the interlocking adjusting rod and the first arm can be adjusted when the closing locking plate is located at the second position and the interlocking rotating shaft is located at the second rotating position, so that the interlocking device of the switch equipment can be adjusted after being assembled, the problem that a linkage mechanism such as a link mechanism in the prior art is difficult to adjust after being assembled is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or first operation block is removed due to assembly and manufacturing errors, the first distance can be correspondingly adjusted to compensate the manufacturing and assembling errors, the use reliability of the interlocking device of the switch equipment is ensured, and the safety of equipment and operators is ensured.
Furthermore, the locking and interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with a first end, and the first end forms the second operation preventing structure and is used for being matched with the breaker closing crank arm in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at the second position.
The interlocking device has the advantages that the distance between the first end of the interlocking adjusting rod and the circuit breaker closing crank arm can be adjusted when the circuit breaker is closed and the closing locking plate is located at the second position, so that the interlocking device of the switch equipment can be adjusted after being assembled, the problem that a linkage mechanism such as a link mechanism in the prior art is difficult to adjust after being assembled is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or second operation prevention is removed due to assembly and manufacturing errors, the first distance can be correspondingly adjusted to compensate the manufacturing and assembling errors, the use reliability of the interlocking device of the switch equipment is ensured, and the safety of equipment and operators is ensured.
Furthermore, the interlocking adjusting rod is also provided with a first end, and the first end forms the second operation preventing structure and is used for being matched with a closing crank arm of the circuit breaker in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at the second position.
The invention has the advantages that because the torque transmission mechanism and the interlocking adjusting rod are added, the distance between the first end of the interlocking adjusting rod and the closing crank arm of the circuit breaker can be adjusted when the closing and closing locking plate of the circuit breaker is at the second position, and the distance between the second end of the interlocking adjusting rod and the first arm can be adjusted when the interlocking rotating shaft is at the second rotating position when the closing locking plate is at the second position, so the interlocking device of the switch equipment can still be adjusted after the assembly is finished, the problem that the original linkage mechanism such as a link mechanism in the prior art is difficult to adjust after the assembly is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or the first operation block and/or the second operation block are removed due to the assembly and manufacturing errors, the manufacturing and assembly errors can be compensated by correspondingly adjusting the first distance and the second distance of the interlocking adjusting rod, the use reliability of the locking interlocking device of the switch equipment is ensured, so that the safety of the equipment and operators is ensured.
Furthermore, the locking and interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with more than two parts, one of the interlocking adjusting rod is provided with a first end, and the other interlocking adjusting rod is provided with a second end;
the first end forms the second operation preventing structure and is used for being matched with the breaker closing crank arm in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at a second position;
the second end forms the pushing structure;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding second distance, and the second distance is the distance between the second end of the interlocking adjusting rod and the first arm when the closing locking plate is at a second position and the interlocking rotating shaft is at a second rotating position.
The invention has the advantages that because the torque transmission mechanism and the interlocking adjusting rod are added, the distance between the first end of the interlocking adjusting rod and the closing crank arm of the circuit breaker can be adjusted when the closing and closing locking plate of the circuit breaker is at the second position, and the distance between the second end of the interlocking adjusting rod and the first arm can be adjusted when the interlocking rotating shaft is at the second rotating position when the closing locking plate is at the second position, so the interlocking device of the switch equipment can still be adjusted after the assembly is finished, the problem that the original linkage mechanism such as a link mechanism in the prior art is difficult to adjust after the assembly is solved, and therefore, even if the interlocking device of the switch equipment cannot be reliably realized and/or the first operation block and/or the second operation block are removed due to the assembly and manufacturing errors, the manufacturing and assembly errors can be compensated by correspondingly adjusting the first distance and the second distance of the interlocking adjusting rod, the use reliability of the locking interlocking device of the switch equipment is ensured, so that the safety of the equipment and operators is ensured.
Furthermore, the interlocking adjusting rod is an adjusting bolt, and the first end and/or the second end are/is formed by corresponding end parts of the adjusting bolt;
and the closing locking plate is provided with a bolt hole for the thread matching of the adjusting bolt, and the adjusting structure consists of an external thread used for matching with the threaded hole on the adjusting bolt and an internal thread of the threaded hole.
The interlocking device has the advantages of simple structure and reliable determination of the position of the interlocking adjusting rod after adjustment.
Furthermore, the closing locking plate comprises a plate main body and a first bending part vertical to the plate main body, and the plane where the plate main body is located is along the vertical direction; first bending portion body coupling is in the lower extreme of board main part and face perpendicular to upper and lower direction, the screw hole sets up on first bending portion.
The novel closing locking device has the advantages that the closing locking plate is bent to form a setting foundation of the threaded hole, the structure is simple, and the processing and the manufacturing are convenient.
Furthermore, the plate main body is provided with an extension part extending upwards, and when the breaker is in an opening state and the closing locking plate is in a first position, the extension part is used for being matched with a closing tripping plate of the breaker in a blocking mode to prevent the breaker from being operated to be closed; the extension forms the first operation preventing structure.
The first operation preventing structure is formed by a part of the plate main body, and has the advantages of simple structure and convenience in processing.
Furthermore, the periphery of the interlocking rotating shaft is provided with a first groove and a second groove, the bottom groove walls of the first groove and the second groove are parallel to the axis of the interlocking rotating shaft, the first arm is fixed on the bottom groove wall of the first groove through a bolt, and the second arm is fixed on the bottom groove wall of the second groove through a bolt.
The interlocking mechanism has the beneficial effects that the contact areas of the first arm, the second arm and the interlocking rotating shaft are increased, and the reliable connection of the first arm, the second arm and the interlocking rotating shaft is realized.
Drawings
Fig. 1 is a three-dimensional view 1 of the interlocking lock device of a specific embodiment 1 of the switching device of the invention (the trap door in the open position);
FIG. 2 is a three-dimensional view of FIG. 1 from another perspective;
fig. 3 is a three-dimensional view 1 of the interlocking lock-out device of embodiment 1 of the switchgear of the invention (shutter in closed position);
fig. 4 is a schematic view of the torque transmission mechanism and the link adjusting lever in the embodiment 1 of the switchgear of the present invention in cooperation with the circuit breaker;
in the figure: 1. the stop pin comprises a stop pin body 2, a support plate 3, a valve body 31, a shielding part 32, a connecting part 4, a guide device 5, a second return spring 6, a middle connecting plate 7, an output bent plate 8, a middle connecting shaft 9, a joint bearing 10, a three-position interlocking rod 11, a circuit breaker interlocking rod 12, an adjusting bolt 13, a second arm 14, an interlocking rotating shaft 15, a plate main body 16, a first arm 17, a shifting plate 18, an extending part 19, a guide long hole 20, a bolt head 21, a bolt tail part 22, a first bending part 23, a second bending part 24, a second groove 25, a closing tripping plate 26, a circuit breaker connecting arm 27, a first return spring 28 and a closing locking plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the application, i.e., the embodiments described are only a subset of, and not all embodiments of the application. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present application will be described in further detail below with reference to embodiments, it should be noted that the below-described lockout interlock device of the switchgear is written in terms of lockout interlocks for use between a three-position disconnector and a circuit breaker, but of course, the lockout interlock device of the switchgear can also be used for lockout interlocks between a two-position disconnector and a circuit breaker.
Specific embodiment 1 of the switchgear of the present application: the switch equipment comprises a breaker, a three-station isolation grounding switch and an interlocking locking device, wherein the breaker is provided with a breaker closing connecting lever 26 and a closing tripping plate 25, and the breaker closing connecting lever 26 is provided with positions corresponding to the opening and closing states of the breaker on the swinging stroke; and when the closing tripping plate 25 cannot swing from the opening position to the closing position, the circuit breaker cannot be closed. The structure of the circuit breaker is the structure which is common in the prior art, and the improvement point of the invention is not shown here, so the detailed description of the circuit breaker is not provided.
The three-station isolation grounding switch is provided with a switching-on position, an isolation position and a grounding position, and is provided with a manual operation handle and a manual operation hole, wherein the manual operation handle is inserted into the manual operation hole to operate the three-station isolation grounding switch device to act. The structure of the three-position isolating grounding switch is a common structure in the prior art, and the improvement point of the invention is not shown here, so the detailed description of the three-position isolating grounding switch is not provided.
As shown in fig. 1, 2 and 3, the interlock locking device includes a shutter mechanism, a closing locking plate 28, a first return spring 27, and a linkage mechanism for linking the shutter mechanism and the closing locking plate 28, where the shutter mechanism includes a support plate 2 having a fixed position, the support plate 2 is provided with an insertion hole for avoiding a manual operation hole of the three-position isolation earthing switch, and when the three-position isolation earthing switch is manually operated, a manual operation handle of the three-position isolation earthing switch needs to pass through the insertion hole and enter the manual operation hole of the three-position isolation earthing switch to control the operation of the three-position isolation earthing switch.
The shutter mechanism further comprises a shutter 3, the shutter 3 is arranged on the support plate 2 in a guide way through a guide device 4 and is parallel to the support plate 2, and the shutter 3 has an opening position and a closing position on a guide movement stroke. The valve 3 is provided with a shielding part 31 and a connecting part 32, the shielding part 31 shields the manual operation hole of the three-position isolation grounding switch when the valve 3 is in a closed position, so that the manual operation shaft of the three-position isolation grounding switch cannot be inserted into the manual operation hole of the three-position isolation grounding switch, and the shielding part 31 lets the manual operation hole of the three-position isolation grounding switch open when the valve 3 is in an open position, so that the manual operation shaft of the three-position isolation grounding switch can pass through the insertion hole and enter the manual operation hole of the three-position isolation grounding switch.
The guiding device 4 is fixed on the supporting plate 2 and is provided with a guiding channel, the connecting part 32 is matched with the channel wall of the guiding channel to guide the moving direction of the valve 3, the extending direction of the guiding channel is defined to be along the left-right direction, and the moving direction of the valve 3 from the opening position to the closing position is the left moving direction. A second return spring 5 is arranged between the guide device 4 and the connecting portion 32, the second return spring 5 is used for applying an acting force for driving the valve 3 to move leftwards to the valve 3, a stop pin 1 is further arranged on the support plate 2, the stop pin 1 is used for being matched with the valve 3 in a stopping mode when the valve 3 is in a closed position, and the stopping direction of the stop pin 1 to the valve 3 is opposite to the force applying direction of the second return spring 5 to the valve 3. The valve 3 is fixedly connected with a shifting plate 17 for an operator to shift, the shifting plate 17 is perpendicular to the valve 3, a long hole for the shifting plate 17 to penetrate out is formed in the supporting plate 2, and the shifting plate 17 can move in the long hole to drive the valve 3 to move.
The linkage mechanism comprises a torque transmission mechanism, a synchronous transmission connecting mechanism and an interlocking adjusting rod, the synchronous transmission connecting mechanism comprises a first connecting rod mechanism, a middle connecting shaft 8, a joint bearing 9 and a second connecting rod mechanism, the first connecting rod mechanism comprises a middle connecting plate 6 and an output bent plate 7, one end of the middle connecting plate 6 is hinged to a connecting portion 32 of the valve 3, the other end of the middle connecting plate is hinged to one end of the output bent plate 7, and the middle of the output bent plate 7 is hinged to the supporting plate 2. The other end of the output bent plate 7 is fixedly connected with a middle connecting shaft 8, and the axis of the middle connecting shaft 8 is vertical to the plane of the output bent plate 7. The second connecting rod adjusting mechanism comprises a three-position interlocking rod 10 and a circuit breaker interlocking rod 11 which are hinged to each other, the inner ring of the joint bearing 9 is in interference fit with the middle connecting shaft 8, and the outer ring of the joint bearing is fixedly connected with the three-position interlocking rod 10.
The torque transmission mechanism comprises an interlocking rotating shaft 14, a first arm 16 and a second arm 13, a first groove and a second groove 24 are formed in the periphery of the interlocking rotating shaft 14, the bottom groove walls of the first groove and the second groove 24 are parallel to the axis of the interlocking rotating shaft 14, the first arm 16 is fixed on the bottom groove wall of the first groove through bolts, and the second arm 13 is fixed on the bottom groove wall of the second groove 24 through bolts. One end of the second arm 13, which is far away from the interlocking rotating shaft 14, is hinged to one end of the circuit breaker interlocking rod 11, which is far away from the three-position interlocking rod 10, the second arm 13 is used for transmitting the action of the circuit breaker interlocking rod 11 to the interlocking rotating shaft 14 to drive the interlocking rotating shaft 14 to rotate around an axis, the rotating stroke of the interlocking rotating shaft 14 has a first rotating position and a second rotating position, and when the interlocking rotating shaft 14 rotates from the second rotating position to the first rotating position, one end of the first arm 16, which is far away from the interlocking rotating shaft 14, has an upward displacement component.
The synchronous transmission connecting mechanism is used for synchronously transmitting power or resistance between the valve mechanism and the interlocking rotating shaft, so that the interlocking rotating shaft synchronously rotates to a first rotating position when the valve mechanism drives the valve 3 to an opening position, the interlocking rotating shaft synchronously rotates to a second rotating position when the valve mechanism drives the valve 3 to a closing position, and the valve 3 is synchronously prevented from moving from the opening position to the closing position when the interlocking rotating shaft is blocked from rotating from the second rotating position to the first rotating position.
The interlock adjustment lever is formed by an adjustment bolt 12 screwed onto a closing locking plate 28, the bolt head 20 of the adjustment bolt 12 forming a first end 20 of the interlock adjustment lever and the bolt tail of the adjustment bolt 12 forming a second end 21 of the interlock adjustment lever. When the interlocking rotating shaft 14 rotates from the second rotating position to the first rotating position, the bolt tail 21 of the adjusting bolt 12 is in pushing fit with the first arm 16 of the torque transmission mechanism, so that the torque generated by the rotation of the interlocking rotating shaft is converted into pushing force and is applied to the closing locking plate 28, the closing locking plate 28 overcomes the elastic force of the first return spring 27 to move from the second position to the first position, and the bolt tail 21 of the adjusting bolt 12 forms a pushing structure.
As shown in fig. 4, the closing locking plate 28 is movable in a vertical direction, and has a first position at a lower end and a second position at an upper end in a movement stroke. The closing locking plate 28 includes a plate body 15 and a first bent portion 22 and a second bent portion 23 perpendicular to the plate body 15, respectively, the plane of the plate body 15 is in the up-down direction, and the upper end of the plate body 15 has an extending portion 18 extending upward. The plate body 15 is provided with a long guide hole 19 vertically extending in the longitudinal direction, the long guide hole 19 allows a guide pin having a fixed position on the switchgear to vertically pass through, and the movement direction of the closing locking plate 28 is guided vertically by the cooperation of the guide pin and the hole wall of the long guide hole 19. The first bending portion 22 is integrally connected to the lower end of the plate main body 15, the plane where the first bending portion 22 is located is perpendicular to the vertical direction, a threaded hole for connecting a bolt is formed in the first bending portion 22, and an internal thread of the threaded hole and an external thread on the adjusting bolt 12 jointly form an adjusting structure. The second bending portion 23 is integrally connected to the left end of the plate main body 15 along the vertical direction, the upper end of the first return spring 27 is fixed to the second bending portion 23, the lower end of the first return spring 27 has a fixed position, and the first return spring 27 is configured to apply an acting force to the closing locking plate 28 to drive the closing locking plate to move from the first position to the second position.
As shown in fig. 4, when the circuit breaker is in the open state and the closing locking plate 28 is in the first position, the extension portion 18 is in blocking fit with the closing releasing plate 25 of the circuit breaker to prevent the circuit breaker from being operated to close; that is, when the switching-on operation handle of the three-position isolating grounding switch is inserted into the switching-on operation hole of the three-position isolating grounding switch, the circuit breaker cannot be switched on, so that when the three-position isolating grounding switch is operated, the circuit breaker is always kept in a switching-off state and cannot be switched on by switching-off, and the extension part 18 forms a first operation prevention structure.
When the circuit breaker is in a closing state and the closing interlocking plate is in a second position, the bolt head 20 of the adjusting bolt 12 is in blocking fit with the closing crank arm 26 of the circuit breaker, so that the interlocking rotating shaft is prevented from rotating from the second rotating position to the first rotating position; that is, when the circuit breaker is in a closing state, the valve 3 cannot be opened to insert the operating handle of the three-position isolating and grounding switch into the operating hole of the three-position isolating and grounding switch, so that the three-position isolating and grounding switch cannot be operated in the closing state of the circuit breaker, and the bolt head 20 of the adjusting bolt 12 forms a second operation preventing structure.
When the circuit breaker closing and closing locking plate 28 is at the second position, the distance between the bolt head 20 of the adjusting bolt 12 and the circuit breaker closing crank arm 26 is referred to as a first distance, when the closing locking plate 28 is at the second position, and when the interlocking rotating shaft is at the second rotating position, the distance between the bolt tail 21 of the adjusting bolt 12 and the first arm 16 is referred to as a second distance, because the adjusting bolt 12 is fixed on the first bending part 22 in a threaded connection manner, the distance between the bolt head 20 of the adjusting bolt 12 and the first bending part 22 and the distance between the bolt tail 21 and the first bending part 22 are adjustable, that is, the first distance and the second distance are adjustable, it should be noted that the distance between the bolt head 20 of the adjusting bolt 12 and the first bending part 22 and the distance between the bolt tail 21 of the adjusting bolt 12 and the first bending part 22 cannot be adjusted in an isolated manner, that is, that the bolt head 20 is close to the first bending part 22, the bolt tail 21 must be away from the first bend 22 and vice versa.
Specific embodiment 3 of the switchgear of the present application: this example differs from the specific example 1 in that: and a bending piece is convexly arranged on the closing locking plate and is in blocking fit with the closing connecting lever 26 of the circuit breaker to form a second operation preventing structure. In this case (similar to the second operation preventing structure of the background art cited document), the bolt tail of the adjusting bolt forms the second end of the interlocking adjusting lever, i.e. there is no "first end", and then the distance between the second operation preventing structure and the closing crank arm of the circuit breaker can only be adjusted by adjusting the position of the closing locking plate, i.e. only the second distance can be adjusted.
Specific embodiment 4 of the switchgear of the present application: this example differs from the specific example 1 in that: the first bending part is provided with a pushing bulge extending downwards, the pushing bulge is used for being in pushing fit with the first arm, the bolt head of the adjusting bolt only forms a second operation preventing structure, namely only a first end is arranged, but not a second end, and only the first distance can be adjusted.
Specific embodiment 6 of the switchgear of the present application: this example differs from the specific example 1 in that: the adjusting bolt is provided with a through hole in the radial direction, the through hole is used for a fixing bolt to pass through, a long hole in the up-and-down direction is formed in the plate main body, the position of the fixing bolt is adjustable, the fixing bolt is connected with a fixing nut in a threaded mode, the fixing nut and the bolt head of the fixing bolt clamp the hole edge of the adjusting bolt and the long hole tightly, and the adjusting bolt is fixed on the closing locking plate in an adjustable position.
Specific embodiment 7 of the switchgear of the present application: this example differs from the specific example 1 in that: the closing locking plate comprises a plate main body and a fixed block fixed on the plate main body, and a threaded hole for connecting an adjusting bolt in a threaded manner is formed in the fixed block.
Specific example 12 of the switchgear of the present application: this example differs from the specific example 1 in that: and a second reset spring is not arranged, and the valve is driven to reset through the shifting plate.
The specific embodiment of the interlocking and locking device of the switchgear of the present application is the same as the structure of the interlocking and locking device in the specific embodiment of the switchgear, and is not described again.
The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.
Claims (10)
1. A latch interlock for a switchgear comprising:
the valve mechanism is used for driving a valve on a manual operation hole of a no-load cut-off device of the switch equipment, and the valve is provided with an opening position/closing position for opening/closing the manual operation hole of the no-load cut-off device;
the closing locking plate is used for reciprocating movement along a set track, and a first position and a second position are arranged on a movement stroke; the closing locking plate is connected with a first return spring which drives the closing locking plate to move from a first position to a second position; the closing locking plate comprises a first operation preventing structure; the first operation preventing structure is used for preventing the operation breaker from being switched on when the switching-on locking plate is positioned at a first position;
the second operation preventing structure is arranged on the closing locking plate and is used for being matched with the closing crank arm of the circuit breaker in a stopping way when the closing locking plate is at the second position so as to prevent the closing locking plate from moving from the second position to the first position;
the linkage mechanism is used for linking the valve mechanism and the closing locking plate so that the first position of the closing locking plate corresponds to the valve with an opened position and the second position corresponds to the valve with a closed position;
the method is characterized in that:
the linkage mechanism comprises a torque transmission mechanism, a synchronous transmission connecting mechanism and a pushing structure;
the torque transmission mechanism comprises an interlocking rotating shaft, a first arm and a second arm, the interlocking rotating shaft rotates around a set axis, the rotating stroke of the interlocking rotating shaft has a first rotating position and a second rotating position, and the first arm and the second arm are fixed on the interlocking rotating shaft;
one end of the synchronous transmission connecting mechanism is connected with the valve mechanism, the other end of the synchronous transmission connecting mechanism is connected with the second arm, and the synchronous transmission connecting mechanism is used for synchronously transmitting power or resistance between the valve mechanism and the interlocking rotating shaft so that the interlocking rotating shaft synchronously rotates to a first rotating position when the valve mechanism drives the valve to an open position, and synchronously rotates to a second rotating position when the valve mechanism drives the valve to a closed position, and synchronously prevents the valve from moving from the open position to the closed position when the interlocking rotating shaft is blocked from rotating from the second rotating position to the first rotating position;
the pushing structure is arranged on the closing locking plate; the pushing structure is used for being in pushing fit with a first arm of the torque transmission mechanism so as to convert torque generated by rotation of the interlocking rotating shaft into pushing force and apply the pushing force to the closing locking plate.
2. The latch interlock of a switchgear as claimed in claim 1, wherein: the locking interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with a second end, and the second end forms the pushing structure;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding second distance, and the second distance is the distance between the second end of the interlocking adjusting rod and the first arm when the closing locking plate is at a second position and the interlocking rotating shaft is at a second rotating position.
3. The latch interlock of a switchgear as claimed in claim 2, wherein: the interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with a first end, and the first end forms the second operation preventing structure and is used for being matched with a closing crank arm of the circuit breaker in a stopping way so as to prevent the interlocking rotating shaft from rotating to the first rotating position from the second rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at the second position.
4. The latch interlock of a switchgear as claimed in claim 2, wherein: the interlocking adjusting rod is also provided with a first end, and the first end forms the second operation preventing structure and is used for being matched with a breaker closing crank arm in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at the second position.
5. The latch interlock of a switchgear as claimed in claim 1, wherein: the locking interlocking device of the switch equipment comprises an interlocking adjusting rod, wherein the interlocking adjusting rod is provided with more than two parts, one of the interlocking adjusting rod is provided with a first end, and the other interlocking adjusting rod is provided with a second end;
the first end forms the second operation preventing structure and is used for being matched with the breaker closing crank arm in a stopping way so as to prevent the interlocking rotating shaft from rotating from the second rotating position to the first rotating position;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding first distance, and the first distance is the distance between the second operation preventing structure and the closing connecting lever of the circuit breaker when the circuit breaker is closed and the closing locking plate is located at a second position;
the second end forms the pushing structure;
the interlocking adjusting rod is assembled on the closing locking plate through an adjusting structure, the adjusting structure is used for adjusting a corresponding second distance, and the second distance is the distance between the second end of the interlocking adjusting rod and the first arm when the closing locking plate is at a second position and the interlocking rotating shaft is at a second rotating position.
6. The latch interlock device of a switchgear according to any one of claims 3, 4, and 5, wherein: the interlocking adjusting rod is an adjusting bolt, and the first end and/or the second end are/is formed by corresponding end parts of the adjusting bolt;
and the closing locking plate is provided with a bolt hole for the thread matching of the adjusting bolt, and the adjusting structure consists of an external thread used for matching with the threaded hole on the adjusting bolt and an internal thread of the threaded hole.
7. The latch interlock of a switchgear as claimed in claim 6, wherein: the closing locking plate comprises a plate main body and a first bending part vertical to the plate main body, and the plane where the plate main body is located is along the vertical direction; first bending portion body coupling is in the lower extreme of board main part and face perpendicular to upper and lower direction, the screw hole sets up on first bending portion.
8. The latch interlock of a switchgear apparatus according to claim 7, wherein: the plate main body is provided with an extending part extending upwards, and when the breaker is in a brake-off state and the closing locking plate is at a first position, the extending part is used for being in blocking fit with a closing tripping plate of the breaker to prevent the breaker from being operated to close; the extension forms the first operation preventing structure.
9. The latch interlock device of a switching apparatus according to any one of claims 1, 2, 3, 4, and 5, wherein: the periphery of the interlocking rotating shaft is provided with a first groove and a second groove, the bottom groove walls of the first groove and the second groove are parallel to the axis of the interlocking rotating shaft, the first arm is fixed on the bottom groove wall of the first groove through a bolt, and the second arm is fixed on the bottom groove wall of the second groove through a bolt.
10. A switching apparatus, comprising:
the circuit breaker is provided with a circuit breaker closing connecting lever and a closing tripping plate, and the circuit breaker closing connecting lever is provided with positions corresponding to the opening and closing states of the circuit breaker on the swinging stroke of the circuit breaker; the switching-on tripping plate is provided with a switching-off position and a switching-on position which respectively correspond to the switching-on and switching-off states of the circuit breaker on the swinging stroke, and when the switching-on tripping plate cannot swing from the switching-off position to the switching-on position, the circuit breaker cannot be switched on;
the no-load cut-off device is provided with a manual operating handle and a manual operating hole, and the manual operating handle is inserted into the manual operating hole to operate the no-load cut-off device to act;
an interlock lockout device characterized by: the interlocking lock device is a locking interlock device of a switchgear according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328660.1A CN111192775B (en) | 2019-12-20 | 2019-12-20 | Switching device and locking interlocking device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911328660.1A CN111192775B (en) | 2019-12-20 | 2019-12-20 | Switching device and locking interlocking device thereof |
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| CN111192775A CN111192775A (en) | 2020-05-22 |
| CN111192775B true CN111192775B (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911328660.1A Active CN111192775B (en) | 2019-12-20 | 2019-12-20 | Switching device and locking interlocking device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11476647B1 (en) * | 2021-04-22 | 2022-10-18 | Rockwell Automation Technologies, Inc. | Maintenance grounding device in motor control center with integrated interlock system |
| CN114537698B (en) * | 2022-03-25 | 2024-03-12 | 深圳中集天达空港设备有限公司 | Corridor bridge |
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