CN117810015A - Earthing switch operation interlocking device - Google Patents
Earthing switch operation interlocking device Download PDFInfo
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- CN117810015A CN117810015A CN202410166319.5A CN202410166319A CN117810015A CN 117810015 A CN117810015 A CN 117810015A CN 202410166319 A CN202410166319 A CN 202410166319A CN 117810015 A CN117810015 A CN 117810015A
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- plate
- hole
- interlocking
- door
- crank arm
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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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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- 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
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to the technical field of high-voltage switch cabinet design, in particular to a grounding switch operation interlocking mechanism which is applied to a high-voltage switch cabinet and comprises an interlocking unit component and a shaft control unit component, wherein the interlocking unit component performs self-locking protection or release according to equipment working conditions in the high-voltage switch cabinet, the shaft control unit component is respectively matched with a front door, a rear door and a grounding switch in the high-voltage switch cabinet, and the front door, the rear door and the closing grounding switch are opened by manually controlling the shaft control unit component when the interlocking unit component is in a self-locking release state, otherwise, the shaft control unit component is limited and protected by the interlocking unit component. The interlocking mechanism has the advantages of reasonable design, simple manufacture, convenient installation, reliable use and high safety.
Description
Technical Field
The invention relates to the technical field of high-voltage switch cabinet design, in particular to an operation interlocking mechanism of a grounding switch.
Background
The interlocking mechanism is one of main components of the high-voltage switch cabinet and is also a key part most prone to failure, and if the interlocking mechanism is improperly operated, the interlocking mechanism is damaged, so that the operation reliability of the mechanism is required to be higher. When the grounding switch in the high-voltage switch cabinet is subjected to switching-on and switching-off operations, the grounding switch must be interlocked with a breaker in the switch cabinet at the same time, including mechanical interlocking and electrical interlocking, so that the grounding switch is prevented from being switched on by mistake in a live state, and in order to ensure the safety of the switch cabinet in line overhaul or maintenance, the occurrence of electric shock and system short-circuit accidents is prevented, and the defects of complex structure, easiness in failure or damage, low reliability and the like of an interlocking mechanism exist in the prior art.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a grounding switch operation interlocking mechanism which is more reasonable in design, simpler in structure and higher in safety, and the specific technical scheme is as follows:
the utility model provides a grounding switch operation interlocking mechanism, is applied to high tension switchgear, includes interlocking unit part and axle accuse unit part, interlocking unit part carries out auto-lock protection or releases according to the interior equipment operating mode of high tension switchgear, axle accuse unit part cooperatees with the front door of high tension switchgear, back door and intra-cabinet grounding switch respectively, under interlocking unit part for auto-lock release state, opens front and back door and closed grounding switch through manual control axle accuse unit part, otherwise axle accuse unit part is restricted the protection by interlocking unit part.
Further, the cabinet body of high tension switchgear front side is equipped with the lockhole, and the lockhole is located the preceding region between door plant and the preceding lower door plant in the preceding door, and lockhole is protection shield and padlock outward, protection shield one side articulates in the cabinet body, and the opposite side locks so that the protection shield covers the lockhole after locking the cooperation with hanging the phase lock, after the padlock is opened through padlock key unblock, the protection shield is through rotatory in order to release the cover protection to the lockhole.
Further, the shaft control unit part includes: the main shaft and the front door opening assembly, the rear door opening assembly and the grounding closing assembly which are simultaneously controlled in a linkage way by the main shaft; the front end of the main shaft corresponds to the lock hole, a hole site is formed in the front end of the main shaft and used for inserting an extension bar socket wrench matched with the hole site to rotate the main shaft.
Further, the front door opening assembly includes: the device comprises a door pin plate, a push plate support, a push plate, a sector plate, a clamping seat, a first cam, a compression spring and a connecting push rod; the fan-shaped plate and the first cam are fixedly sleeved on the main shaft and rotate along with the shaft, the clamping seat and the push plate support are fixedly arranged on the inner side wall of the switch cabinet, and the clamping seat is matched with the fan-shaped plate; the push plate support is positioned below the first cam, and the upper support plate and the lower support plate of the push plate support are provided with corresponding perforations; the lower end of the connecting push rod is fixedly connected with the tail part of the door pin plate at right angles after being perforated, the head part of the door pin plate is provided with a notch and penetrates through the cabinet body, and the notch is used for being connected with the front lower door plate; wherein the connecting push rod is arranged with the perforation gap; the push plate is fixedly welded at the upper end of the connecting push rod and is matched with the first cam; the compression spring is sleeved on the connecting push rod and is elastically connected with the lower support plate, so that the push plate and the door pin plate are rebound and reset.
Further, the connecting push rod body is provided with a protruding portion, the compression spring is sleeved on the connecting push rod body, one end of the compression spring is pressed and attached to the protruding portion, and the other end of the compression spring is pressed and attached to the inner side plate surface of the lower support plate.
Further, a second cam is further arranged on the main shaft, an auxiliary switch is arranged below the second cam in a matched mode through a connecting structure which is the same as that of a push plate and a connecting push rod in the front door opening assembly, and then the second cam props against the auxiliary switch to move downwards in the main shaft rotating process so as to switch on a contact in the auxiliary switch.
Further, the back door opening assembly includes: the device comprises a rotary bayonet lock, a rear door bayonet lock, a reset spring, a fixed support, a distance adjusting seat, a linkage shaft, a side support frame, a metal sleeve and a D-shaped wheel; the metal sleeve is fixed on the front and rear partition boards in the switch cabinet, the metal sleeve body is provided with two sleeve holes, one sleeve hole is used for penetrating the main shaft, and the other sleeve hole is used for sleeving and positioning the head part of the linkage shaft; the D-shaped wheel is sleeved on the main shaft, rotates along with the shaft, is positioned behind the metal sleeve and is matched with the head of the linkage shaft; the back door bayonet lock is arranged on a back door of the high-voltage switch cabinet; the distance adjusting seat body is an L-shaped bent piece, one side plate surface of the distance adjusting seat body is provided with a transverse adjustable hole site and is fixed at the tail part of the linkage shaft through a bolt, and the other side plate surface is provided with two screw holes; the side support frame is positioned at the rear side of the high-voltage switch cabinet and is provided with a pin hole matched with the rear door bayonet lock; the fixed support is positioned behind the distance adjusting seat, is arranged on the side support frame and corresponds to the pin hole; the front end plate surface of the fixed support body is provided with an upper through hole and a lower through hole, and the lower end surface of the fixed support body is provided with a hole groove; wherein the two through holes respectively correspond to the two screw holes of the distance adjusting seat; one end of the rotary bayonet lock is a threaded part, the other end of the rotary bayonet lock is a rotary part, the threaded part is matched with a corresponding screw hole of the distance adjusting seat through a lower through hole of the fixed support by a screw cap, and the rotary part is matched with the hole groove and the rear door bayonet lock; the upper through hole of the fixed support is connected with the screw hole of the distance adjusting seat corresponding to the upper through hole through a bolt and a nut, the reset spring is sleeved on the bolt, one end of the reset spring is elastically connected to the head of the bolt, and the other end of the reset spring is elastically connected to the front end plate surface of the fixed support.
Further, the head of the linkage shaft is provided with a raised step surface matched with the D-shaped wheel, when the flat plate surface of the D-shaped wheel is parallel to the raised step surface after the D-shaped wheel rotates, the linkage shaft 7 is moved backwards by the expansion force of the return spring, the head of the linkage shaft moves out of the sleeve hole, and otherwise, the raised step surface is fixed in the sleeve hole through the arc surface of the D-shaped wheel 2.
Further, the ground closure assembly includes: the upper crank arm, the upper crank arm connecting part, the adjusting connecting rod, the lower crank arm and the lower crank arm connecting part; one end of the upper crank arm is fixedly installed with the main shaft, and the other end of the upper crank arm is connected with the upper end of the adjusting connecting rod through an upper crank arm connecting part; one end of the lower crank arm is connected with the lower end of the adjusting connecting rod through a lower crank arm connecting part, and the other end of the lower crank arm is fixedly connected with a total shaft which is used for rotating a grounding knife to open and close with a grounding contact in a grounding switch; when the upper crank arm rotates upwards, the stress is transmitted to the lower crank arm through the adjusting connecting rod, and the grounding knife rotates upwards in a clockwise direction and is connected with the grounding contact.
Further, the interlocking unit member includes: the self-locking release piece, the handcart guide rail interlocking piece and the locking electromagnet; the self-locking release member body is provided with a corner driving end and a finger pressure extending end connected with the corner driving end, the upper part and the lower part of the corner driving end are respectively connected with the handcart guide rail interlocking member and the locking electromagnet in a matched mode, the finger pressure extending end is arranged in the lock hole in a vertical moving mode and matched with the front end of the main shaft, the locking electromagnet is fixedly arranged on an upper support plate of the push plate support, and the telescopic end of the locking electromagnet is matched with the lower part of the corner driving end; the handcart guide rail interlocking piece is arranged on the inner side wall of the switch cabinet and consists of a conventional connecting rod, a small crank arm, an interlocking rotating shaft, a torsion spring, a guide rail interlocking baffle and a guide rail, wherein the connecting rod is connected with the upper part of the driving end of the corner in a driving way, so that the small crank arm connected with the connecting rod is controlled to drive the interlocking rotating shaft to rotate, and the guide rail interlocking baffle arranged at the rear end of the interlocking rotating shaft extends out of a guide rail side hole.
The advantages of the invention include:
1. the interlocking mechanism has mechanical interlocking and electrical interlocking, plays a role in double protection, and improves the reliability and safety of misoperation prevention.
2. When the grounding switch chamber has high voltage electricity, the interlocking mechanism of the invention cannot be operated, and the rear door plate and the front lower door plate of the high voltage switch cabinet cannot be opened at the same time, so that electric shock is prevented.
3. When the rear door plate of the high-voltage switch cabinet is opened or not completely closed, the interlocking mechanism cannot be operated, and meanwhile, closing operation cannot be performed, so that electric shock is prevented.
4. The interlocking mechanism has the advantages of reasonable design, simple manufacture, convenient installation, reliable use and high safety.
Drawings
FIG. 1 is a schematic diagram of the outline structure of a high-voltage switchgear to which the interlocking mechanism for operating the grounding switch according to the embodiment of the present invention is applied;
FIG. 2 is a schematic illustration of an embodiment of the invention with an extension rod socket wrench inserted after unlocking a high voltage switchgear;
FIG. 3 is a schematic view showing a detail structure of an interlock mechanism for operating a grounding switch in a closed door and an ungrounded state according to an embodiment of the present invention;
FIG. 4 is a schematic view showing the overall structure of the grounding switch operation interlocking mechanism in a closed door and grounding switch ungrounded state according to the embodiment of the present invention
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a schematic view of the state structure of the high voltage switchgear after the grounding switch operation interlocking mechanism of the embodiment of the present invention rotates the extension bar sleeve wrench;
FIG. 7 is a schematic view showing a detailed structure of an interlock mechanism for operating a grounding switch in a state where the door is opened and the grounding switch is grounded according to an embodiment of the present invention;
FIG. 8 is a schematic view of the overall structure of the grounding switch operation interlocking mechanism in a state where the door is opened and the grounding switch is grounded;
FIG. 9 is a side view of FIG. 8;
in the figure, the door comprises a 1-rear door plate, a 2-rotary bayonet, a 3-rear door bayonet, a 4-return spring, a 5-fixed support, a 6-distance adjusting seat, a 7-linkage shaft, an 8-side supporting frame, a 9-upper crank arm, a 10-adjusting connecting rod, a 11-metal sleeve, a 12-main shaft, a 13-lower crank arm, a 14-grounding switch, a 15-grounding knife, a 16-grounding contact, a 17-auxiliary switch, a 18-lower door pin plate, a 19-push plate support, a 20-locking electromagnet, a 21-push plate, a 22-fan plate, a 23-protection plate, a 24-self-locking release piece, a 25-clamping seat, a 26-cabinet body, a 27-handcart guide rail interlocking piece, a 28-front and rear partition plate, a 29-D wheel, a 30-first cam, a 31-front middle door plate, a 32-front lower door plate, a 33-padlock, a 34-padlock key, a 35-extension rod sleeve spanner, a 36-compression spring, a 37-connection push rod and a 38-second cam.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more apparent, the present invention will be further described in detail with reference to the drawings and examples of the specification.
As shown in fig. 3 to 9, an operation interlocking mechanism for a grounding switch applied to a high-voltage switch cabinet of the present embodiment includes an interlocking unit component and a shaft control unit component, where the interlocking unit component performs self-locking protection or release according to a working condition of equipment in the high-voltage switch cabinet, for example, only when a high-voltage vacuum circuit breaker of the high-voltage switch cabinet is in a "test position" and a grounding switch room is in a condition without high voltage, the interlocking unit component is in a self-locking release state, and in the self-locking release state, the shaft control unit component can be controlled to operate manually, otherwise, when the interlocking unit component is in a self-locking protection state, the shaft control unit component is protected by the interlocking unit component, so that the shaft control unit component is limited to operate manually. The shaft control unit component is respectively matched with the front door, the rear door and the grounding switch 14 in the cabinet of the high-voltage switch cabinet, and the front door, the rear door and the grounding switch 14 can be opened and closed by manually controlling the shaft control unit component in a self-locking release state.
Specifically, as shown in fig. 1 and fig. 2, the cabinet body 26 at the front side of the high-voltage switch cabinet is provided with a lock hole, specifically, the lock hole is located in an area between the front middle door plate 31 and the front lower door plate 32 of the switch cabinet, a protection plate 23 and a padlock 33 are arranged outside the lock hole, one side of the protection plate 23 is hinged to the cabinet body 26, the other side of the protection plate 23 is locked after being matched with the padlock 33 so that the protection plate 23 covers the lock hole, and when the padlock 33 is unlocked and opened by the padlock key 34, the protection plate 23 can rotate to release the covering protection of the lock hole.
The shaft control unit part includes: the main shaft 12, and a front door opening assembly, a rear door opening assembly and a grounding closing assembly which are simultaneously controlled in a linkage manner by the main shaft 12.
The front end of the main shaft 12 corresponds to the lock hole, and a hole site is opened at the front end, and the hole site is used for inserting an extension bar socket wrench 35 matched with the hole site for rotation control.
The front door opening assembly includes: the door pin plate 18, the push plate support 19, the push plate 21, the sector plate 22, the clamping seat 25, the first cam 30, the compression spring 36 and the connecting push rod 37; the sector plate 22 and the first cam 30 are fixedly sleeved on the main shaft 12 and rotate along with the shaft, the clamping seat 25 and the push plate support 19 are fixedly installed on the inner side wall of the switch cabinet, and the clamping seat 25 is matched with the sector plate 22; the push plate support 19 is positioned below the first cam 30, and corresponding perforations are formed in an upper support plate and a lower support plate of the push plate support 19; the connecting push rod 37 is perforated, the lower end of the connecting push rod is fixedly connected with the tail part of the door pin plate 18 at a right angle, the head part of the door pin plate 18 is provided with a notch and penetrates through the cabinet body 26, and the notch is used for connecting the notch with a front door to realize front door opening and closing; wherein the connecting push rod 37 is arranged with the perforation gap; the push plate 21 is fixedly welded at the upper end of the connecting push rod 37 and is matched with the first cam 30; the compression spring 36 is sleeved on the connecting push rod 37 and is elastically connected with the lower support plate, so as to rebound and reset the push plate 21 and the door pin plate 18.
In this front door opening assembly structure, the extension bar socket wrench 35 is inserted into the hole and then rotated clockwise, and when the sector plate 22 on the main shaft 12 contacts the clamping seat 25, the clockwise rotated position of the extension bar socket wrench 35 is indicated to be in place, and at the same time, the first cam 3 pushes the push plate 21 downwards, so that the door pin plate 18 is moved downwards through the connection push rod 37, at this time, the extension bar socket wrench 35 can be removed, and the front door is also in an openable state.
The specific structure of the elastic connection is as follows: the connecting push rod 37 body is provided with a protruding portion, the compression spring 36 is sleeved on the connecting push rod 37, one end of the compression spring 36 is pressed against the protruding portion, and the other end of the compression spring is pressed against the inner side plate surface of the lower support plate.
The main shaft 12 is also provided with a second cam 38, and an auxiliary switch 17 is arranged below the second cam 38 through the cooperation of the same connecting structure as the push plate 21 and the connecting push rod 37 in the front door opening assembly, so that the second cam 38 can prop against the auxiliary switch 17 to move downwards so as to switch on the contacts in the auxiliary switch 17.
The rear door opening assembly includes: the rotary bayonet lock 2, the back door bayonet lock 3, the reset spring 4, the fixed support 5, the distance adjusting seat 6, the linkage shaft 7, the side supporting frame 8, the metal sleeve 11 and the D-shaped wheel 29;
the metal sleeve 11 is fixed on a front partition plate 28 and a rear partition plate 28 in the switch cabinet, the metal sleeve 11 body is provided with two sleeve holes, one sleeve hole is used for penetrating the main shaft 12, and the other sleeve hole is used for sleeving and positioning the head of the linkage shaft 7; the D-shaped wheel 29 is sleeved on the main shaft 12 to rotate along with the shaft, is positioned behind the metal sleeve 11 and is matched with the head of the linkage shaft 7, namely, the head of the linkage shaft 7 is provided with a raised step surface matched with the D-shaped wheel 29, when the flat plate surface of the D-shaped wheel 29 is parallel to the raised step surface after the D-shaped wheel 29 rotates, the linkage shaft 7 moves backwards, the head of the D-shaped wheel moves out of the sleeve hole, and otherwise, the raised step surface is fixed in the sleeve hole through the arc surface of the D-shaped wheel 29;
the rear door bayonet lock 3 is arranged on a rear door of the high-voltage switch cabinet;
the distance adjusting seat 6 body is an L-shaped bent piece, one side plate surface of the distance adjusting seat is provided with a transverse adjustable hole site and is fixed at the tail part of the linkage shaft 7 through a bolt, and the other side plate surface is provided with two screw holes;
the side support frame 8 is positioned at the rear side of the high-voltage switch cabinet and is provided with a pin hole matched with the rear door bayonet lock 3;
the fixed support 5 is positioned behind the distance adjusting seat 6, is arranged on the side support frame 8 and corresponds to the pin hole; the front end plate surface of the body of the fixed support 5 is provided with an upper through hole and a lower through hole, and the lower end surface is provided with a hole groove; wherein the two through holes respectively correspond to the two screw holes of the distance adjusting seat 6;
one end of the rotary bayonet lock 2 is a threaded part, the other end of the rotary bayonet lock is a rotary part, the threaded part is connected with a corresponding screw hole of the distance adjusting seat 6 through the cooperation of a screw cap through a lower through hole of the fixed support 5, and the rotary part is matched with the hole groove and the rear door bayonet lock 3;
the upper through hole of the fixed support 5 is connected with the screw hole of the distance adjusting seat 6 corresponding to the upper through hole through a bolt and a nut, the reset spring 4 is sleeved on the bolt, one end of the reset spring 4 is elastically connected to the head of the bolt, and the other end of the reset spring is elastically connected to the front end plate surface of the fixed support 5.
In the rear door opening assembly structure, the main shaft 12 which is rotated by the extension rod sleeve spanner 35 rotates to drive the D-shaped wheel 29 to rotate along with the shaft, when the D-shaped wheel 29 is rotated to be in non-extrusion contact with the linkage shaft 7, the linkage shaft 7 moves towards the rear direction of the cabinet under the action of the reset spring 4, and the rear door bayonet lock 3 also moves towards the rear direction of the cabinet under the thrust of the rotary bayonet lock 2, so that the rear door plate 1 can be opened at the moment.
The ground closure assembly includes: the device comprises an upper crank arm 9, an upper crank arm connecting part, an adjusting connecting rod 10, a lower crank arm 13 and a lower crank arm connecting part, wherein one end of the upper crank arm 9 is fixedly installed with a main shaft 12, and the other end of the upper crank arm 9 is connected with the upper end of the adjusting connecting rod 10 through the upper crank arm connecting part; one end of the lower crank arm 13 is connected with the lower end of the adjusting connecting rod 10 through a lower crank arm connecting part, and the other end is fixedly connected with the grounding switch 14, in particular to a total shaft which is used for rotating the grounding knife 15 in the grounding switch 14 to open and close with the grounding contact 16. In this ground closing assembly, the upper lever 9 is rotated upward, and a force is transmitted to the lower lever 13 by the adjustment link 10, and the ground blade 15 is rotated upward in a clockwise direction and connected to the ground contact 16.
The interlocking unit member includes: the self-locking release member 24, the handcart rail interlocking member 27 and the locking electromagnet 20 are arranged in the lock hole in a vertical moving way, and are respectively matched with the handcart rail interlocking member 27 and the locking electromagnet 20.
Specifically, the self-locking release member 24 body is provided with a corner driving end and a finger-pressure extending end connected with the corner driving end, the upper and lower parts of the corner driving end are respectively connected with the handcart guide rail interlocking member 27 and the locking electromagnet 20 in a matched manner, and the finger-pressure extending end extends into the lock hole to be matched with the front end of the main shaft 12.
The locking electromagnet 20 is fixedly arranged on an upper support plate of the push plate support 19, and the telescopic end of the locking electromagnet 20 is matched with the lower part of the corner driving end; the handcart guide rail interlocking piece 27 is arranged on the inner side wall of the switch cabinet, the handcart guide rail interlocking piece 27 consists of a conventional connecting rod, a small crank arm, an interlocking rotating shaft, a torsion spring, a guide rail interlocking baffle and a guide rail, wherein the connecting rod is in driving connection with the upper part of the driving end of the corner, so that the small crank arm connected with the connecting rod is controlled to drive the interlocking rotating shaft to rotate, the guide rail interlocking baffle arranged at the rear end of the interlocking rotating shaft extends out of a side hole of the guide rail and can prevent the handcart from moving, and at the moment, the handcart cannot move from a test position to a working position; the torsion spring is used for bouncing and resetting to enable the guide rail interlocking baffle to retract to the guide rail side, and the handcart can move from the test position to the working position at the moment. The arrangement structure of the handcart guide rail interlocking piece 27 and the locking electromagnet 20 plays a role in double protection on whether the high-voltage switch cabinet can be opened or not, and improves the reliability and safety of misoperation prevention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the foregoing detailed description of the invention has been provided, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, and that certain features may be substituted for those illustrated and described herein. Modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides a grounding switch operation interlocking device, is applied to high tension switchgear, includes interlocking unit part and axle accuse unit part, its characterized in that, interlocking unit part carries out auto-lock protection or releases according to the interior equipment operating mode of high tension switchgear, axle accuse unit part cooperatees with the front door of high tension switchgear, back door and cabinet internal grounding switch (14) respectively, under interlocking unit part for auto-lock release state, opens front and back door and closed grounding switch (14) through manual control axle accuse unit part, otherwise axle accuse unit part is restricted and protected by interlocking unit part.
2. The grounding switch operation interlocking mechanism according to claim 1, wherein the cabinet body (26) at the front side of the high-voltage switch cabinet is provided with a lock hole, the lock hole is positioned in an area between a front middle door plate (31) and a front lower door plate (32) in the front door, a protection plate (23) and a padlock (33) are arranged outside the lock hole, one side of the protection plate (23) is hinged to the cabinet body (26), the other side of the protection plate (23) is locked after being matched with the padlock (33) so that the protection plate (23) covers the lock hole, and when the padlock (33) is unlocked and opened through a padlock key (34), the protection plate (23) rotates to release the covering protection of the lock hole.
3. A ground switch-operated interlock mechanism as set forth in claim 2 wherein said shaft control unit member includes: the main shaft (12) and the front door opening assembly, the rear door opening assembly and the grounding closing assembly which are simultaneously controlled in a linkage way by the main shaft (12); the front end of the main shaft (12) corresponds to the lock hole, and a hole site is formed in the front end and is used for inserting an extension bar socket wrench (35) matched with the hole site to rotate the main shaft (12).
4. A grounding switch-operated interlock mechanism as set forth in claim 3 wherein said front door opening assembly comprises: the door pin plate (18), the push plate support (19), the push plate (21), the sector plate (22), the clamping seat (25), the first cam (30), the compression spring (36) and the connecting push rod (37); the fan-shaped plate (22) and the first cam (30) are fixedly sleeved on the main shaft (12) and rotate along with the shaft, the clamping seat (25) and the push plate support (19) are fixedly arranged on the inner side wall of the switch cabinet, and the clamping seat (25) is matched with the fan-shaped plate (22); the push plate support (19) is positioned below the first cam (30), and corresponding perforations are formed in an upper support plate and a lower support plate of the push plate support (19); the lower end of the connecting push rod (37) is fixedly connected with the tail of the door pin plate (18) at a right angle after being perforated, the head of the door pin plate (18) is provided with a notch and penetrates through the outside of the cabinet body (26), and the notch is used for being connected with the front lower door plate (32); wherein the connecting push rod (37) is arranged with the perforation gap; the push plate (21) is fixedly welded at the upper end of the connecting push rod (37) and is matched with the first cam (30); the compression spring (36) is sleeved on the connecting push rod (37) and is elastically connected with the lower support plate, so as to rebound and reset the push plate (21) and the door pin plate (18).
5. The grounding switch operation interlocking mechanism according to claim 4, wherein the connecting push rod (37) body is provided with a protruding portion, the compression spring (36) is sleeved on the connecting push rod (37), one end of the compression spring (36) is pressed against the protruding portion, and the other end of the compression spring is pressed against the inner side plate surface of the lower support plate.
6. A earthing switch operation interlocking mechanism as claimed in claim 4, wherein a second cam (38) is further provided on said main shaft (12), an auxiliary switch (17) is provided under the second cam (38) by the same connection structure as the push plate (21) and the connection push rod (37) of said front door opening assembly, and the second cam (38) moves downward against the auxiliary switch (17) during rotation of the main shaft to switch on the contacts in the auxiliary switch (17).
7. A ground switch-operated interlock mechanism as set forth in claim 3 wherein said rear door opening assembly comprises: the device comprises a rotary bayonet lock (2), a rear door bayonet lock (3), a return spring (4), a fixed support (5), a distance adjusting seat (6), a linkage shaft (7), a side supporting frame (8), a metal sleeve (11) and a D-shaped wheel (29); the metal sleeve (11) is fixed on a front baffle plate and a rear baffle plate (28) in the switch cabinet, the metal sleeve (11) body is provided with two sleeve holes, one sleeve hole is used for penetrating the main shaft (12), and the other sleeve hole is used for sleeving and positioning the head of the linkage shaft (7); the D-shaped wheel (29) is sleeved on the main shaft (12) to rotate along with the shaft, is positioned behind the metal sleeve (11) and is matched with the head of the linkage shaft (7); the rear door bayonet lock (3) is arranged on a rear door of the high-voltage switch cabinet; the distance adjusting seat (6) body is an L-shaped bent piece, one side plate surface of the distance adjusting seat is provided with a transverse adjustable hole site and is fixed at the tail part of the linkage shaft (7) through a bolt, and the other side plate surface is provided with two screw holes; the side support frame (8) is positioned at the rear side of the high-voltage switch cabinet and is provided with a pin hole matched with the rear door bayonet lock (3); the fixed support (5) is positioned behind the distance adjusting seat (6), is arranged on the side supporting frame (8) and corresponds to the pin hole; an upper through hole and a lower through hole are formed in the front end plate surface of the fixed support (5), and a hole groove is formed in the lower end surface of the fixed support; wherein the two through holes respectively correspond to the two screw holes of the distance adjusting seat (6); one end of the rotary bayonet lock (2) is a threaded part, the other end of the rotary bayonet lock is a rotary part, the threaded part is connected with a corresponding screw hole of the distance adjusting seat (6) through the cooperation of a screw cap through a lower through hole of the fixed support (5), and the rotary part is matched with the hole groove and the rear door bayonet lock (3); the upper through hole of the fixed support (5) is connected with the screw hole of the distance adjusting seat (6) corresponding to the upper through hole through a bolt and a nut, the reset spring (4) is sleeved on the bolt, one end of the reset spring (4) is elastically connected to the head of the bolt, and the other end of the reset spring is elastically connected to the front end plate surface of the fixed support (5).
8. A earthing switch operation interlocking mechanism as claimed in claim 7, wherein the head of the linkage shaft (7) is provided with a raised step surface matched with the D-shaped wheel (29), when the flat surface of the D-shaped wheel (29) is parallel to the raised step surface after the D-shaped wheel (29) rotates, the linkage shaft (7) moves backwards under the expansion force of the return spring (4), the head of the linkage shaft moves out of the sleeve hole, and otherwise, the raised step surface is fixed in the sleeve hole through the arc surface of the D-shaped wheel (29).
9. A grounding switch-operated interlock mechanism as set forth in claim 3 wherein said ground closure assembly comprises: an upper crank arm (9), an upper crank arm connecting part, an adjusting connecting rod (10), a lower crank arm (13) and a lower crank arm connecting part; one end of the upper crank arm (9) is fixedly arranged with the main shaft (12), and the other end is connected with the upper end of the adjusting connecting rod (10) through an upper crank arm connecting part; one end of the lower crank arm (13) is connected with the lower end of the adjusting connecting rod (10) through a lower crank arm connecting part, and the other end of the lower crank arm is fixedly connected with a total shaft which is used for rotating the grounding knife (15) to open and close with the grounding contact (16) in the grounding switch (14); when the upper crank arm (9) rotates upwards, the connecting rod (10) is adjusted to transmit the stress to the lower crank arm (13), and the grounding knife (15) rotates upwards in a clockwise direction and is connected with the grounding contact (16).
10. A ground switch-operated interlock mechanism as set forth in claim 4 wherein said interlock cell means comprises: the self-locking release piece (24), the handcart guide rail interlocking piece (27) and the locking electromagnet (20); the self-locking release piece (24) body is provided with a corner driving end and a finger pressure extending end connected with the corner driving end, the upper part and the lower part of the corner driving end are respectively matched and connected with the handcart guide rail interlocking piece (27) and the locking electromagnet (20), the finger pressure extending end is arranged in a lock hole in a vertical moving way and matched with the front end of the main shaft (12), the locking electromagnet (20) is fixedly arranged on an upper support plate of the push plate support (19), and the telescopic end of the locking electromagnet (20) is matched with the lower part of the corner driving end; the handcart guide rail interlocking piece (27) is arranged on the inner side wall of the switch cabinet, the handcart guide rail interlocking piece (27) is composed of a conventional connecting rod, a small crank arm, an interlocking rotating shaft, a torsion spring, a guide rail interlocking baffle and a guide rail, wherein the connecting rod is connected with the upper part of the driving end of the corner in a driving mode, and therefore the small crank arm connected with the connecting rod is controlled to drive the interlocking rotating shaft to rotate, and the guide rail interlocking baffle arranged at the rear end of the interlocking rotating shaft stretches out of a guide rail side hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410166319.5A CN117810015A (en) | 2024-02-06 | 2024-02-06 | Earthing switch operation interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410166319.5A CN117810015A (en) | 2024-02-06 | 2024-02-06 | Earthing switch operation interlocking device |
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| Publication Number | Publication Date |
|---|---|
| CN117810015A true CN117810015A (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410166319.5A Pending CN117810015A (en) | 2024-02-06 | 2024-02-06 | Earthing switch operation interlocking device |
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| CN (1) | CN117810015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117977422A (en) * | 2024-04-02 | 2024-05-03 | 珠海康晋电气股份有限公司 | Insulating metal closed switchgear box |
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2024
- 2024-02-06 CN CN202410166319.5A patent/CN117810015A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117977422A (en) * | 2024-04-02 | 2024-05-03 | 珠海康晋电气股份有限公司 | Insulating metal closed switchgear box |
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