CN114496642A - Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet - Google Patents
Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet Download PDFInfo
- Publication number
- CN114496642A CN114496642A CN202210033790.8A CN202210033790A CN114496642A CN 114496642 A CN114496642 A CN 114496642A CN 202210033790 A CN202210033790 A CN 202210033790A CN 114496642 A CN114496642 A CN 114496642A
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- Prior art keywords
- grounding switch
- chamber door
- locking pin
- cable chamber
- locking
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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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/045—Details of casing, e.g. gas tightness
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to an inflatable cabinet, an interlocking device of an earthing switch and a cable chamber door of the inflatable cabinet, which comprises a locking pin arranged along the radial direction of an earthing switch driving shaft and a linkage mechanism arranged between the locking pin and the cable chamber door; the locking pin is provided with an elastic reset piece, the interlocking device further comprises a locking disc fixed on a driving shaft of the grounding switch, and the locking disc is provided with a brake opening corresponding position corresponding to a brake opening position of the grounding switch and a brake closing corresponding position corresponding to a brake closing position of the grounding switch in a rotating stroke; the outer peripheral surface of the locking disc is provided with an arc blocking surface for limiting the locking pin, an avoidance space is arranged on one side of the locking disc in the circumferential direction of the arc blocking surface, and the avoidance space is used for being aligned with the locking pin when the locking disc is located at a closing corresponding position so as to relieve the limitation on the locking pin, and further the cable chamber door is unlocked. Compared with the prior art, the invention can solve the problem that the interlocking device of the cable chamber door is unlocked when the grounding switch is not switched on in place in the prior art.
Description
Technical Field
The invention belongs to the technical field of inflatable cabinets, and particularly relates to an interlocking device of a grounding switch and a cable chamber door of an inflatable cabinet.
Background
To aerifing the cabinet, according to the five-prevention interlocking requirement of GB/T3906 standard, when cable chamber door was opened, earthing switch can not carry out the separating brake operation, when cable chamber door was closed, could carry out earthing switch's separating brake operation, in addition, only earthing switch was in when closing state, could open cable chamber door.
Most of the operating mechanisms of the three-position switch are slow-speed operating mechanisms, specifically, the grounding switch is operated at a slow speed through the grounding operating shaft during switching-on, and the grounding switch can be kept at any position during the operation process. In the grounding operation process of the three-position switch, the interlocking device of the cable chamber door is driven by the cam in transmission connection with the operation mechanism so as to unlock the interlocking device, and the cable chamber door is convenient to open.
For example, the interlocking device and the ring main unit disclosed in chinese utility model patent with the publication number CN214226777U, wherein when the ground switch is in the opening position, the interlocking device abuts against the upper end of the interlocking rod arranged along the radial direction of the ground switch driving shaft through the cam arranged on the ground switch driving shaft, because the lower end of the interlocking rod is connected with the link gear, the interlocking rod is connected with the lock rod sleeve clamped with the cabinet door through the transmission of the link gear, and because the cabinet door is an upward-moving opened cabinet door, the interlocking rod and the lock rod sleeve cannot move upward at this time, and the cabinet door is locked; when the cam rotates, the cam can be separated from the upper end of the linkage rod to avoid the upward movement of the linkage rod, and the cabinet door can be moved upward to open the cabinet door.
For example, the chinese utility model patent with the publication number CN202172031U discloses an interlocking device for a switch cabinet door and a grounding switch, wherein the interlocking device is installed on a side plate of the switch cabinet, when the grounding switch is switched on, the grounding switch driving shaft rotates to press the connecting rod to move downwards, the connecting rod moves downwards to move the linkage mechanism connected to the lower end of the connecting rod to separate from a lock catch installed on the cabinet door, and the cabinet door can be opened at this time; when the grounding switch is opened, the cam returns, the connecting rod moves upwards under the action of the spring sleeved on the connecting rod, the linkage mechanism is further driven to move downwards to be fastened with the lock catch, and at the moment, the cabinet door cannot be opened.
However, the cam is of a gradual change structure, and the operating mechanism of the three-position switch is a slow-speed mechanism, so that when the grounding switch in the three-position switch is not switched on in place, the structure of the cam can form a stroke avoiding the interlocking device, and the stroke can realize the unlocking of the interlocking device, so that the problems that the grounding switch is not switched on in place and the interlocking device of the cable chamber door is unlocked can be caused, and the probability of safety accidents such as electric shock is increased.
Disclosure of Invention
The invention aims to provide an interlocking device of a grounding switch and a cable chamber door of an inflatable cabinet, which aims to solve the problems that the grounding switch is not switched on in place and the interlocking device of the cable chamber door is unlocked in the prior art; the present invention also aims to provide an inflatable cabinet to solve the above problems.
In order to achieve the purpose, the interlocking device of the grounding switch and the cable chamber door of the inflatable cabinet adopts the following technical scheme:
an interlocking device of a grounding switch and a cable chamber door of an inflatable cabinet comprises a locking pin arranged along the radial direction of a grounding switch driving shaft, and a linkage mechanism connected between the locking pin and the cable chamber door to realize interlocking of the grounding switch and the cable chamber door; the locking pin is connected with an elastic reset piece which is used for applying acting force towards the driving shaft of the grounding switch to the locking pin; the interlocking device also comprises a locking disc which is fixed on a driving shaft of the grounding switch, and the locking disc is provided with a brake opening corresponding position which corresponds to the brake opening position of the grounding switch and a switch closing corresponding position which corresponds to the switch closing position of the grounding switch on the rotation stroke; the outer peripheral surface of the locking disc is provided with an arc blocking surface used for limiting the tail end of the locking pin when the locking disc rotates along with the grounding switch driving shaft, an avoiding space is arranged on one side of the locking disc in the circumferential direction of the arc blocking surface and used for being aligned with the locking pin when the locking disc is located at a closing corresponding position so as to relieve the limitation on the locking pin, and therefore the cable chamber door is unlocked.
The beneficial effects of the above technical scheme are that: according to the interlocking device of the grounding switch and the cable chamber door of the inflatable cabinet, when the grounding switch is in the opening position, the locking disc is in the opening corresponding position, the tail end of the locking pin can be limited through the arc stop surface of the locking disc, namely the locking disc can lock the guide of the locking pin, and at the moment, the interlocking device cannot realize unlocking, namely the cable chamber door cannot be opened; when the grounding switch is switched on in place, the avoidance space on the arc stop surface of the locking disc is exactly aligned with the locking pin, at the moment, the locking pin can enter the avoidance space to unlock the limit of the locking disc on the locking pin, namely, the avoidance space of the locking disc forms the unlocking stroke of the interlocking device; compared with a cam with a gradual change structure in the prior art, the avoidance space can realize sudden unlocking of the locking pin, further more accurate unlocking of the interlocking device can be realized, the problem that the interlocking device is unlocked when the grounding switch is not switched on in place in the prior art is solved, and meanwhile, the avoidance space and the blocking of the locking pin are matched to lock rotation of the locking disc, so that the problem that the grounding switch is mistakenly switched off due to rotation of the locking disc when a cable chamber door is opened can be solved.
Further, fixedly connected with baffle on the locking pin, the baffle has and rotates to the combined floodgate and corresponds the position the locking dish corresponds and is used for sheltering from earthing switch's manual operation axle hide the position, correspond with the locking dish that rotates to the separating brake and correspond the position and be used for dodging of manual operation axle dodge the position.
The beneficial effects of the above technical scheme are that: when the grounding switch is switched on, the baffle is in a shielding position, and the baffle can shield a manual operation shaft of the grounding switch at the moment, so that the manual operation shaft cannot be rotated, the switching-off misoperation of the grounding switch can be prevented, and the occurrence of electric shock accidents is avoided; meanwhile, when the grounding switch is in the opening position, the baffle is in the avoiding position, and the manual operation shaft is avoided by the baffle at the moment, so that the manual operation shaft can be rotated, and the switching-on operation of the grounding switch is facilitated.
Furthermore, the baffle is provided with a limiting long hole extending along the guiding direction of the locking pin, and the spring operating mechanism of the grounding switch is provided with a limiting pin which is in limiting fit with the limiting long hole so as to limit the stroke of the locking pin and the baffle.
The beneficial effects of the above technical scheme are that: through the spacing cooperation of spacing slot hole on the baffle and spacer pin, can carry on spacingly to the stroke of baffle and the lock pin of being connected with the baffle to this can prevent that both from along the stroke of lock pin direction too big, influence interlock's normal use.
Furthermore, the axial tail end of the limiting pin is provided with a limiting cap used for blocking the limiting long hole to prevent the baffle from being separated from the limiting pin.
The beneficial effects of the above technical scheme are that: through the stop cooperation of the limiting cap and the edge of the limiting long hole, the baffle can be prevented from being separated from the limiting pin, and meanwhile, the locking pin connected with the baffle can be prevented from rotating, so that the baffle can normally shield a driving shaft of the grounding switch, and the normal use of the interlocking device is also ensured.
Furthermore, the spring operating mechanism is provided with a U-shaped guide plate, the U-shaped guide plate is provided with two lug plates which are arranged in parallel at intervals along the vertical direction, the two lug plates are respectively provided with through holes which correspond up and down, and the two through holes are used for the locking pin to pass through along the vertical direction in a guiding manner.
The beneficial effects of the above technical scheme are that: the installation of the locking pin can be realized through the U-shaped guide plate, and meanwhile, the action of the locking pin is conveniently guided through the through hole in the lug plate, so that the guiding direction of the locking pin is ensured.
Furthermore, the interlocking device comprises an operation integrated module, the operation integrated module comprises a module main body, and an electric input shaft and a manual operation shaft are arranged on the module main body; the module main body is further provided with a worm and a worm wheel which is in transmission connection with the worm and fixed on the driving shaft of the grounding switch, and the electric input shaft and the manual operation shaft are in transmission connection with the worm through a gear transmission structure.
The beneficial effects of the above technical scheme are that: therefore, the grounding switch driving shaft can be driven to rotate through the electric input shaft, and meanwhile, the grounding switch driving shaft can also be driven to rotate through the manual operation shaft, so that double guarantee can be formed for the opening and closing operation of the grounding switch, the normal operation of the opening and closing of the grounding switch is ensured, and the normal work of the interlocking device is further ensured.
Further, the upper end face of the locking pin is of a spherical structure, and/or the tail end of the arc blocking face is provided with an arc chamfer.
The beneficial effects of the above technical scheme are that: when the upper end face of the locking pin is of a spherical structure, friction between the locking pin and the arc stop face can be reduced, the arc stop face is prevented from being scratched by the locking pin, and meanwhile, the locking pin can conveniently enter the clamping groove along the arc stop face; when the tail end of the arc stop surface is provided with the arc chamfer, the locking pin can conveniently enter the clamping groove.
Furthermore, the locking disc is a disc, and the avoiding space is formed by a clamping groove at the periphery of the disc.
The beneficial effects of the above technical scheme are that: set the locking dish to the disc, can increase the regional scope that the locking dish separating brake corresponds the position like this, to the limiting displacement of locking pin when guaranteeing the earthing switch separating brake, avoid earthing switch to carry on spacing and lead to interlock's inefficacy because of the locking dish can't carry on the locking pin when separating brake position, and then guaranteed earthing switch interlocking device under the separating brake state to the locking of cable chamber door.
Furthermore, the door plate of the cable chamber door is an upward-moving open-type door plate, a hanging plate is arranged on the back surface of the door plate, and a clamping groove extending towards the rear of the cable chamber door is formed in the hanging plate; the locking pin is arranged in a guiding mode in the vertical direction, the connecting piece is arranged on the locking pin, the hanging pin matched with the clamping groove in a blocking mode is arranged on the connecting piece, and the hanging plate, the connecting piece and the hanging pin form the linkage mechanism.
The beneficial effects of the above technical scheme are that: the clamping groove on the hanging plate is in up-and-down stop matching with the hanging pin on the connecting piece, so that when the clamping groove on the locking plate is aligned with the locking pin, the locking pin connected with the connecting piece can be driven to move through the upward movement of the door plate, so that the locking pin enters the clamping groove, the unlocking of the cable chamber door is realized, and meanwhile, when the cable chamber door is closed, the locking pin is indirectly driven to move downward through the downward movement of the cable chamber door to be separated from the clamping groove, so that the resetting of the interlocking device is realized; therefore, the clamping grooves in the hanging plates are in up-and-down stop matching with the hanging pins on the connecting pieces, so that transmission between the cable chamber door and the interlocking device is ensured, and the out-moving connection between the cable chamber door and the interlocking device is simplified.
In order to realize the purpose, the inflatable cabinet adopts the following technical scheme:
an inflatable cabinet comprises a grounding switch arranged in a cabinet body of the inflatable cabinet, and a cable chamber provided with a cable chamber door, wherein an interlocking device is arranged between the grounding switch and the cable chamber door, the interlocking device comprises a locking pin arranged along the radial direction of a driving shaft of the grounding switch, and a linkage mechanism connected between the locking pin and the cable chamber door to realize the interlocking of the grounding switch and the cable chamber door; the locking pin is connected with an elastic reset piece which is used for applying acting force towards the driving shaft of the grounding switch to the locking pin; the interlocking device also comprises a locking disc fixed on a driving shaft of the grounding switch, and the locking disc is provided with a brake opening corresponding position corresponding to the brake opening position of the grounding switch and a brake closing corresponding position corresponding to the brake closing position of the grounding switch on the rotation stroke; the outer peripheral surface of the locking disc is provided with an arc blocking surface used for limiting the tail end of the locking pin when the locking disc rotates along with the grounding switch driving shaft, an avoiding space is arranged on one side of the locking disc in the circumferential direction of the arc blocking surface and used for being aligned with the locking pin when the locking disc is located at a closing corresponding position so as to relieve the limitation on the locking pin, and therefore the cable chamber door is unlocked.
The beneficial effects of the above technical scheme are that: according to the interlocking device of the grounding switch and the cable chamber door of the inflatable cabinet, when the grounding switch is in the opening position, the locking disc is in the opening corresponding position, the tail end of the locking pin can be limited through the arc stop surface of the locking disc, namely the locking disc can lock the guide of the locking pin, and at the moment, the interlocking device cannot realize unlocking, namely the cable chamber door cannot be opened; when the grounding switch is switched on in place, the avoiding space on the arc blocking surface of the locking disc is exactly aligned with the locking pin, and at the moment, the locking pin can enter the avoiding space to unlock the limit of the locking disc on the locking pin, namely the avoiding space of the locking disc forms the unlocking stroke of the interlocking device; compared with a cam with a gradual change structure in the prior art, the avoidance space in the invention can realize sudden unlocking of the locking pin, so that more accurate unlocking of the interlocking device can be realized, and the problem that the interlocking device is unlocked when the grounding switch is not switched on in place in the prior art is solved.
Further, fixedly connected with baffle on the locking pin, the baffle has and rotates to the combined floodgate and corresponds the position the locking dish corresponds and is used for sheltering from earthing switch's manual operation axle hide the position, correspond with the locking dish that rotates to the separating brake and correspond the position and be used for dodging of manual operation axle dodge the position.
The beneficial effects of the above technical scheme are that: when the grounding switch is switched on, the baffle is in a shielding position, and the baffle can shield a manual operation shaft of the grounding switch at the moment, so that the manual operation shaft cannot be rotated, the switching-off misoperation of the grounding switch can be prevented, and the occurrence of electric shock accidents is avoided; meanwhile, when the grounding switch is in the opening position, the baffle is in the avoiding position, and the manual operation shaft is avoided by the baffle at the moment, so that the manual operation shaft can be rotated, and the switching-on operation of the grounding switch is facilitated.
Furthermore, the baffle is provided with a limiting long hole extending along the guiding direction of the locking pin, and the spring operating mechanism of the grounding switch is provided with a limiting pin which is in limiting fit with the limiting long hole so as to limit the stroke of the locking pin and the baffle.
The beneficial effects of the above technical scheme are that: through the spacing cooperation of spacing slot hole on the baffle and spacer pin, can carry on spacingly to the stroke of baffle and the lock pin of being connected with the baffle to this can prevent that both from along the stroke of lock pin direction too big, influence interlock's normal use.
Furthermore, the axial tail end of the limiting pin is provided with a limiting cap used for blocking the limiting long hole to prevent the baffle from being separated from the limiting pin.
The beneficial effects of the above technical scheme are that: through the stop cooperation of the limiting cap and the edge of the limiting long hole, the baffle can be prevented from being separated from the limiting pin, and meanwhile, the locking pin connected with the baffle can be prevented from rotating, so that the baffle can normally shield a driving shaft of the grounding switch, and the normal use of the interlocking device is also ensured.
Furthermore, the spring operating mechanism is provided with a U-shaped guide plate, the U-shaped guide plate is provided with two lug plates which are arranged in parallel at intervals along the vertical direction, the two lug plates are respectively provided with through holes which correspond up and down, and the two through holes are used for the locking pin to pass through along the vertical direction in a guiding manner.
The beneficial effects of the above technical scheme are that: the installation of the locking pin can be realized through the U-shaped guide plate, and meanwhile, the action of the locking pin is conveniently guided through the through hole in the lug plate, so that the guiding direction of the locking pin is ensured.
Furthermore, the interlocking device comprises an operation integrated module, the operation integrated module comprises a module main body, and an electric input shaft and a manual operation shaft are arranged on the module main body; the module main body is further provided with a worm and a worm wheel which is in transmission connection with the worm and fixed on the driving shaft of the grounding switch, and the electric input shaft and the manual operation shaft are in transmission connection with the worm through a gear transmission structure.
The beneficial effects of the above technical scheme are that: therefore, the grounding switch driving shaft can be driven to rotate through the electric input shaft, and meanwhile, the grounding switch driving shaft can also be driven to rotate through the manual operation shaft, so that double guarantee can be formed for the opening and closing operation of the grounding switch, the normal operation of the opening and closing of the grounding switch is ensured, and the normal work of the interlocking device is further ensured.
Further, the upper end face of the locking pin is of a spherical structure, and/or the tail end of the arc blocking face is provided with an arc chamfer.
The beneficial effects of the above technical scheme are that: when the upper end face of the locking pin is of a spherical structure, friction between the locking pin and the arc stop face can be reduced, the arc stop face is prevented from being scratched by the locking pin, and meanwhile, the locking pin can conveniently enter the clamping groove along the arc stop face; when the tail end of the arc stop surface is provided with the arc chamfer, the locking pin can conveniently enter the clamping groove.
Furthermore, the locking disc is a disc, and the avoiding space is formed by a clamping groove at the periphery of the disc.
The beneficial effects of the above technical scheme are that: set the locking dish to the disc, can increase the regional scope that the locking dish separating brake corresponds the position like this, to the limiting displacement of locking pin when guaranteeing earthing switch separating brake, avoid earthing switch to carry on spacing and lead to interlock's inefficacy because of the locking dish can't carry on the locking pin when separating brake position, and then guaranteed earthing switch under the separating brake state the locking of interlock to cable chamber door.
Furthermore, the door plate of the cable chamber door is an upward-moving open-type door plate, a hanging plate is arranged on the back surface of the door plate, and a clamping groove extending towards the rear of the cable chamber door is formed in the hanging plate; the locking pin is arranged in a guiding mode in the vertical direction, the connecting piece is arranged on the locking pin, the hanging pin matched with the clamping groove in a blocking mode is arranged on the connecting piece, and the hanging plate, the connecting piece and the hanging pin form the linkage mechanism.
The beneficial effects of the above technical scheme are that: the clamping groove on the hanging plate is in up-and-down stop matching with the hanging pin on the connecting piece, so that when the clamping groove on the locking plate is aligned with the locking pin, the locking pin connected with the connecting piece can be driven to move through the upward movement of the door plate, so that the locking pin enters the clamping groove, the unlocking of the cable chamber door is realized, and meanwhile, when the cable chamber door is closed, the locking pin is indirectly driven to move downward through the downward movement of the cable chamber door to be separated from the clamping groove, so that the resetting of the interlocking device is realized; therefore, the clamping grooves in the hanging plates are in up-and-down stop matching with the hanging pins on the connecting pieces, so that transmission between the cable chamber door and the interlocking device is ensured, and the out-moving connection between the cable chamber door and the interlocking device is simplified.
Drawings
FIG. 1 is a schematic view of the interlock device of the present invention mounted on an inflatable cabinet;
FIG. 2 is a schematic view of the interlock device of the present invention mounted on an inflatable cabinet from another perspective;
FIG. 3 is a diagram showing the relationship between the locking plate and the locking pin when the locking plate is at the opening position;
FIG. 4 is a side view of FIG. 3;
fig. 5 is a diagram showing a corresponding relationship between the locking plate and the locking pin when the locking plate is at a closing corresponding position in the interlocking device of the present invention (the upper end of the locking pin does not enter the clamping groove);
FIG. 6 is a side view of FIG. 5;
fig. 7 is a state diagram of the upper end of the locking pin entering the catching groove in the interlocking device of the present invention.
In the figure: 10. a grounding switch drive shaft; 20. a locking plate; 21. a circular arc stop surface; 22. a clamping groove; 30. a locking pin; 40. a baffle plate; 41. limiting long holes; 50. a spacing pin; 60. a limiting cap; 70. a U-shaped guide plate; 71. an ear plate; 80. a return spring; 90. a stop pin; 100. a connecting plate; 101. a first connecting plate; 102. a second connecting plate; 110. hanging a pin; 120. hanging the plate; 121. a card slot; 130. a door panel; 131. a hook; 132. perforating the bolt; 140. a bolt; 150. a manually operated shaft; 160. an electric input shaft; 170. a worm gear; 180. a spring operating mechanism; 190. a cabinet body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that, in the embodiments of the present invention, relational terms such as "first" and "second", and the like, which may be present in the terms of the first and second, 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, terms such as "comprises," "comprising," or any other variation thereof, which may be present, 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, the appearances of the phrase "comprising an … …" or similar limitation may be present without necessarily excluding the presence of additional identical elements in the process, method, article, or apparatus that comprises the same elements.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
Example 1 of the inflatable cabinet of the invention:
the gas-filled cabinet adopts a grounding mechanism operated at a low speed, the grounding switch is firstly driven to rotate by a driving shaft 10 of the grounding switch to store energy in the switching-on process of the grounding switch, and after the energy storage is finished, a spring in the spring operating mechanism passes through the middle, and then the grounding switch-on action is automatically completed quickly. The slow operating grounding mechanism is called because the energy storage process is slow. The specific opening and closing structure of the grounding mechanism using slow operation is prior art and will not be described in detail here. As shown in fig. 1 and 2, a cable chamber with a cable chamber door is provided in the cabinet body 190 of the gas-filled cabinet, a three-position switch is installed in the cabinet body 190 of the gas-filled cabinet, and the three-position switch includes a grounding switch and a spring operating mechanism 180 for driving the grounding switch to open and close. The spring operating mechanism 180 includes a ground switch driving shaft 10, and a worm wheel 170 is mounted on the ground switch driving shaft 10, and the worm wheel 170 is in transmission connection with a worm (not shown in the figure).
An interlocking device is further installed between the door panel 130 of the cable chamber door and the grounding switch, the interlocking device comprises an operation integration module, the operation integration module comprises a manual operation shaft 150 and an electric input shaft 160 which are installed on the main body of the spring operation mechanism 180, the manual operation shaft 150 and the electric input shaft 160 are arranged at the same horizontal height, and the manual operation shaft 150 and the electric input shaft 160 are in transmission connection with the worm through a gear transmission structure. When manual drive manual operation axle 150 rotated or when electric drive electric input axle 160 rotated, the accessible gear indirectly drove the worm and rotated, and then can drive worm wheel 170 through the rotation of worm and rotate, because worm wheel 170 installs on earthing switch drive shaft 10, earthing switch drive shaft 10 can rotate with worm wheel 170 synchronization like this, and then earthing switch drive shaft 10 can drive spring operating mechanism 180 and begin the energy storage in order to realize earthing switch's closing, and earthing switch is in the position of separating brake this moment.
As shown in fig. 1, 2, 3 and 4, the interlock device further includes a locking disc 20 fixed on the ground switch driving shaft 10, the locking disc 20 is a circular disc, a disc surface of the locking disc 20 is perpendicular to an axis of the ground switch driving shaft 10, an arc section of a peripheral side surface of the locking disc 20 corresponding to a reciprocating stroke of the ground switch driving shaft 10 forms an arc stop surface 21, a clamping groove 22 is formed on one side of the locking disc 20 in a circumferential direction of the arc stop surface 21, and a groove wall of the clamping groove 22 is in arc transition connection with the arc stop surface 21, that is, an arc chamfer is formed at a tail end of the arc stop surface 21. When the grounding switch is in the switch-off position, the grounding switch driving shaft 10 rotates to drive the spring operating mechanism 180 to store energy for the switch-on of the switch, and the locking disc 20 fixed on the grounding switch driving shaft 10 rotates together with the grounding switch driving shaft 10 in the process of storing energy by the spring operating mechanism 180.
As shown in fig. 1, 2, 3 and 4, a U-shaped guide plate 70 is mounted on the spring operating mechanism 180, the U-shaped guide plate 70 has two ear plates 71 spaced apart from each other in the vertical direction and arranged in parallel to each other, the two ear plates 71 are vertically arranged, the two ear plates 71 are respectively provided with through holes (not shown in the drawings) corresponding to each other in the vertical direction, the U-shaped guide plate 70 is vertically guided by the two through holes to mount the locking pin 30, that is, the locking pin 30 is sequentially guided through the two through holes in the vertical direction, and the locking pin 30 is also radially guided by the grounding switch driving shaft 10. The upper end face of the locking pin 30 is of a spherical structure, and the upper end face of the locking pin 30 is used for abutting against the arc stop face 21 of the locking disc 20 or the groove wall of the clamping groove 22, so that in the rotating process of the locking disc 20, the friction and abrasion between the locking pin 30 and the locking disc 20 can be reduced through the spherical structure of the upper end face of the locking pin 30, and the contact precision between the locking pin 30 and the locking disc 20 can be guaranteed.
As shown in fig. 3 and 4, a connecting plate 100 is connected to the lower end of the locking pin 30, the connecting plate 100 has an L-shaped structure, the connecting plate 100 includes a first connecting plate 101 connected to the lower end of the locking pin 30 and a second connecting plate 102 connected to the first connecting plate 101, and the plate surfaces of the first connecting plate 101 and the second connecting plate 102 are perpendicular to each other, wherein a hanging pin 110 (shown in fig. 4) is connected to the lower end of the second connecting plate 102. The hanging plate 120 is arranged on the back of the door plate 130 of the cable chamber door, a clamping groove 121 extending towards the rear of the cable chamber door is arranged on the hanging plate 120, and the clamping groove 121 is used for being clamped with the hanging pin 110. The door panel 130 of the cable chamber door is further provided with a guide groove (not shown) for guiding the second connection plate 102 up and down, and the guide groove can prevent the second connection plate 102 from swinging left and right, and further prevent the lock pin 30 from rotating along with the swinging of the second connection plate 102.
When the earthing switch is at the opening position, the locking pin 30 moves downward under the action of gravity of the door panel 130 of the cable chamber door, so that a gap is formed between the arc stop surface 21 of the locking disc 20 and the upper end of the locking pin 30 (shown in fig. 3 and 4), but at this time, the arc stop surface 21 of the locking disc 20 also limits the upward movement of the locking pin 30, so that the locking disc 20 has an opening corresponding position corresponding to the opening and closing position of the earthing switch. In the embodiment, the door panel 130 of the cable chamber door is an upward-opening door panel, so when the locking disc 20 is at the opening corresponding position, the locking disc 20 limits the locking pin 30 and the engaging groove 121 and the hanging pin 110 are engaged with each other to block the cable chamber door up and down, thereby preventing the cable chamber door from moving upward, and further preventing the door panel 130 of the cable chamber door from being opened when the ground switch is not at the closing position.
As shown in fig. 3, 4, 5, 6 and 7, a stop pin 90 is further inserted into the lock pin 30, the stop pin 90 is located between the two ear plates 71 of the U-shaped guide plate 70, and an elastic restoring member located between the stop pin 90 and one of the two ear plates 71 is further sleeved on the lock pin 30, in this embodiment, the elastic restoring member is a restoring spring 80, and the restoring spring 80 is used for applying an acting force to the lock pin 30 toward the earthing switch driving shaft 10.
When the grounding switch driving shaft 10 drives the spring operating mechanism 180 to store energy, the grounding switch is switched on, that is, the grounding switch is in the switching-on position. When the earthing switch is in the closing position, the locking disc 20 aligns the locking groove 22 with the locking pin 30 (shown in fig. 5 and 6) along with the rotation of the earthing switch driving shaft 10, at this time, the locking disc 20 has a closing corresponding position corresponding to the closing position of the earthing switch, and the upward movement of the locking pin 30 is avoided due to the alignment of the locking groove 22 of the locking disc 20 with the locking pin 30, that is, the locking groove 22 forms an avoiding space for aligning with the locking pin 30 to remove the limit of the locking pin 30 when the locking disc 20 is in the closing corresponding position, so that the cable chamber door can be lifted up and taken down at this time. After the cable chamber door is taken down, the upper end of the locking pin 30 abuts against the clamping groove 22 (shown in fig. 7) under the elastic force action of the return spring 80, so that the problem that the grounding switch is mistakenly opened due to the rotation of the locking disc 20 when the cable chamber door is not closed can be prevented, and further electric shock accidents are caused.
In addition, in order to prevent the earthing switch from being driven to be opened by the manual operation shaft 150 when the earthing switch is in the closing position, the blocking plate 40 is connected to the circumferential side portion of the locking pin 30, and the blocking plate 40 has a blocking position corresponding to the locking disc 20 rotated to the closing corresponding position and blocking the manual operation shaft 150, so that the earthing switch can be prevented from being driven to be opened by the manual operation shaft 150 due to the blocking of the blocking plate 40. In addition, the blocking plate 40 further has an avoidance position corresponding to the locking plate 20 rotated to the opening corresponding position and used for avoiding the manual operation shaft 150, so that the crank is conveniently connected with the manual operation shaft 150 to drive the manual operation shaft to rotate, and further, the manual operation shaft 150 indirectly drives the grounding switch driving shaft 10 to rotate so as to enable the spring operating mechanism 180 to start energy storage and prepare for the next grounding switch closing.
As shown in fig. 3, 5 and 7, the blocking plate 40 is provided with a limiting long hole 41 extending along the guiding direction of the locking pin 30, the spring operating mechanism 180 is provided with a limiting pin 50 in limiting fit with the limiting long hole 41 to limit the stroke of the locking pin 30 and the blocking plate 40, and the axial end of the limiting pin 50 is provided with a limiting cap 60 for blocking the limiting long hole 41 to prevent the blocking plate 40 from falling off the limiting pin 50. The limit long hole 41 is matched with the limit pin 50 in a limiting mode, the stroke of the baffle plate 40 and the stroke of the locking pin 30 connected with the baffle plate 40 can be limited, and therefore the phenomenon that the stroke of the baffle plate 40 and the stroke of the locking pin 30 in the direction along the locking pin 30 is too large to affect the normal use of the interlocking device can be prevented.
In addition, after the operation in the cable chamber is completed, the door panel 130 of the cable chamber door can be installed, and in the installation process of the door panel 130 of the cable chamber door, when the clamping groove 121 on the hanging plate 120 is clamped with the hanging pin 110 on the connecting plate 100, the gravity of the door panel 130 can drive the locking pin 30 to move downwards so that the upper end of the locking pin 30 leaves the clamping groove 22. The back of the door panel 130 of the cable chamber door is further provided with an L-shaped hook 131, and the hook 131 is used for being clamped with a clamping hole (not shown) on the cabinet 190 when the door panel 130 is installed, so that the installation stability of the door panel 130 is ensured. And the door panel 130 of the cable chamber door is further provided with a bolt through hole 132, and after the door panel 130 is clamped on the cabinet 190, the door panel 130 can be further fixed through a bolt 140. After the door panel 130 is installed, since the blocking plate 40 is in the evading position, the manual operation shaft 150 may perform a switching-off operation on the grounding switch, or the electric input shaft 160 may perform a switching-off operation on the grounding switch.
According to the interlocking device of the grounding switch and the cable chamber door of the inflatable cabinet, when the grounding switch is in the opening position, the locking disc is in the opening corresponding position, the tail end of the locking pin can be limited through the arc stop surface of the locking disc, namely the locking disc can lock the guide of the locking pin, and at the moment, the interlocking device cannot realize unlocking, namely the cable chamber door cannot be opened; when the grounding switch is switched on in place, the clamping groove on the arc stop surface of the locking disc is exactly aligned with the locking pin, and at the moment, the locking pin can enter the clamping groove to unlock the locking disc to limit the locking pin, namely the clamping groove of the locking disc forms the unlocking stroke of the interlocking device; compared with the cam with the gradual change structure in the prior art, the clamping groove can realize sudden unlocking of the locking pin, further more accurate unlocking of the interlocking device can be realized, the problem that the interlocking device is unlocked when the grounding switch is not switched on in place in the prior art is solved, and meanwhile, the rotation of the locking disc can be locked due to the stop matching of the clamping groove and the locking pin, so that the problem that the grounding switch is mistakenly switched off due to rotation of the locking disc when the cable chamber door is opened can be solved.
Example 2 of the inflatable cabinet of the invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the lock plate 20 is a circular plate. In the present embodiment, the locking disk 20 is a sector disk, and at this time, the circular arc side surface of the sector disk forms a circular arc stopping surface 21, and the space of the sector disk end surface forms an avoidance space.
Example 3 of the inflatable cabinet of the invention:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the upper end surface of the locking pin 30 is a spherical surface structure, and the engaging groove 22 is in arc transition connection with the arc stop surface 21. In the present embodiment, the upper end surface of the locking pin 30 is a spherical structure, or the locking groove 22 is in arc transition connection with the arc stop surface 21.
Example 4 of the inflatable cabinet of the invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the spring operating mechanism 180 is provided with an electric input shaft 160 and a manual operation shaft 150 for driving the earthing switch to open and close. In this embodiment, the spring operating mechanism 180 is only provided with the electric input shaft 160 or the manual operating shaft 150 for driving the grounding switch to open and close.
Example 5 of the inflatable cabinet of the invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the stopper pin 50 is engaged with the stopper long hole 41 to limit the stroke of the lock pin 30 and the shutter 40. In the present embodiment, the stop pin 90 of the locking pin 30 is engaged with the ear plate 71 to limit the stroke of the locking pin 30 and the baffle 40.
Example 6 of the inflatable cabinet of the invention:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the door panel 130 of the cable chamber door is an upward opening door panel 130. In this embodiment, door panel 130 of the cable chamber door is hinged to cabinet 190 of the gas-filled cabinet, that is, door panel 130 of the cable chamber door is a door panel 130 opened by rotation, and is connected to locking pin 30 through door panel 130 of the cable chamber door by a transmission mechanism.
The invention discloses an interlocking device of a grounding switch and a cable chamber door of an inflatable cabinet, which comprises the following steps: the specific structure of the interlocking device is the same as that of the inflatable cabinet embodiment, and will not be repeated here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. An interlocking device of a grounding switch and a cable chamber door of an inflatable cabinet comprises a locking pin (30) arranged along the radial direction of a grounding switch driving shaft (10), and a linkage mechanism connected between the locking pin (30) and the cable chamber door to realize interlocking of the grounding switch and the cable chamber door; an elastic reset piece used for applying acting force towards the grounding switch driving shaft (10) to the locking pin (30) is connected to the locking pin (30); the interlocking device is characterized by further comprising a locking disc (20) fixed on the grounding switch driving shaft (10), wherein the locking disc (20) is provided with a brake opening corresponding position corresponding to the brake opening position of the grounding switch and a brake closing corresponding position corresponding to the brake closing position of the grounding switch on the rotation stroke; the peripheral surface of the locking disc (20) is provided with an arc stopping surface (21) used for limiting the tail end of the locking pin (30) when the locking disc (20) rotates along with the grounding switch driving shaft (10), an avoiding space is arranged on one side of the arc stopping surface (21) in the circumferential direction on the locking disc (20), and the avoiding space is used for being centered with the locking pin (30) when the locking disc (20) is in a closing corresponding position so as to release the limitation on the locking pin (30), and further the cable chamber door is unlocked.
2. The interlocking device of the grounding switch and the cable chamber door of the gas-filled cabinet according to claim 1, wherein a baffle (40) is fixedly connected to the locking pin (30), and the baffle (40) has a shielding position corresponding to the locking disc (20) rotated to the closing position and used for shielding the manual operating shaft (150) of the grounding switch, and an avoiding position corresponding to the locking disc (20) rotated to the opening position and used for avoiding the manual operating shaft (150).
3. The interlocking device of the grounding switch and the cable chamber door of the gas-filled cabinet according to claim 2, wherein the baffle plate (40) is provided with a limit slot hole (41) extending along the guiding direction of the locking pin (30), and the spring operating mechanism (180) of the grounding switch is provided with a limit pin (50) which is in limit fit with the limit slot hole (41) to limit the stroke of the locking pin (30) and the baffle plate (40).
4. The interlocking device of the grounding switch and the cable chamber door of the gas-filled cabinet according to claim 3, wherein the axial end of the limit pin (50) is provided with a limit cap (60) for stopping with the hole of the limit long hole (41) to prevent the baffle plate (40) from falling off the limit pin (50).
5. The interlocking device of the grounding switch and the cable chamber door of the gas-filled cabinet according to any one of claims 1 to 4, wherein the spring operating mechanism (180) is provided with a U-shaped guide plate (70), the U-shaped guide plate (70) is provided with two ear plates (71) which are spaced up and down and arranged in parallel, the two ear plates (71) are respectively provided with corresponding through holes, and the two through holes are used for the locking pin (30) to pass through along the up and down direction.
6. The interlocking device of the grounding switch and the cable chamber door of the inflatable cabinet according to any one of claims 1 to 4, wherein the interlocking device comprises an operation integration module, the operation integration module comprises a module main body, and an electric input shaft (160) and a manual operation shaft (150) are arranged on the module main body; the module main body is further provided with a worm and a worm wheel (170) which is in transmission connection with the worm and fixed on the grounding switch driving shaft (10), and the electric input shaft (160) and the manual operation shaft (150) are in transmission connection with the worm through a gear transmission structure.
7. The interlocking device of the grounding switch and the cable chamber door of the gas-filled cabinet according to any one of claims 1 to 4, characterized in that the upper end surface of the locking pin (30) is a spherical structure, and/or the end of the arc-shaped stopping surface (21) is provided with an arc-shaped chamfer.
8. The interlocking device of the grounding switch and the cable chamber door of the inflatable cabinet as claimed in any one of claims 1 to 4, wherein the locking plate (20) is a circular plate, and the avoidance space is formed by a clamping groove (22) at the periphery of the circular plate.
9. The interlocking device of the grounding switch and the cable chamber door of the gas-filled cabinet according to any one of claims 1 to 4, wherein the door panel (130) of the cable chamber door is an upward-moving open-type door panel, a hanging plate (120) is arranged on the back surface of the door panel (130), and a clamping groove (121) extending towards the rear of the cable chamber door is arranged on the hanging plate (120); the locking pin (30) is arranged in a guiding mode in the vertical direction, a connecting piece is arranged on the locking pin (30), a hanging pin (110) matched with the clamping groove (121) in a blocking mode is arranged on the connecting piece, and the hanging plate (120), the connecting piece and the hanging pin (110) form the linkage mechanism.
10. An inflatable cabinet comprising an earthing switch mounted in the cabinet body (190) of the inflatable cabinet, and further comprising a cable chamber provided with a cable chamber door, an interlocking device being provided between the earthing switch and the cable chamber door, characterized in that the interlocking device is the same as the interlocking device of the earthing switch and the cable chamber door of the inflatable cabinet according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210033790.8A CN114496642A (en) | 2022-01-12 | 2022-01-12 | Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210033790.8A CN114496642A (en) | 2022-01-12 | 2022-01-12 | Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114496642A true CN114496642A (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210033790.8A Pending CN114496642A (en) | 2022-01-12 | 2022-01-12 | Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114496642A (en) |
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| CN105406386A (en) * | 2015-12-03 | 2016-03-16 | 平高集团有限公司 | Interlocking device of valve and grounding switch |
| CN106328428A (en) * | 2016-10-25 | 2017-01-11 | 南京南瑞集团公司 | Door interlocking device for three-station switching mechanism |
| KR20170036935A (en) * | 2015-09-24 | 2017-04-04 | 현대중공업 주식회사 | Door interlock device of switchboard |
| CN206236569U (en) * | 2016-10-31 | 2017-06-09 | 广东维能电气有限公司 | A kind of high-voltage switch gear isolates grounding interlocking device |
| US20170278655A1 (en) * | 2014-10-29 | 2017-09-28 | Zhejiang Limited Corporation Of Daodu Intelligent Switch | Embedded-pole hv electrical apparatus combination switchgear |
| CN209747373U (en) * | 2019-03-19 | 2019-12-06 | 天津平高智能电气有限公司 | Switch cabinet with earthing switch and front cable chamber door arranged in interlocking manner |
| CN110931286A (en) * | 2019-11-05 | 2020-03-27 | 许继集团有限公司 | Switchgear and three-position switch and circuit breaker interlocking device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1082757A (en) * | 1976-06-30 | 1980-07-29 | David M. Evans | Switch operating mechanisms for high voltage switches |
| CN203966874U (en) * | 2014-05-27 | 2014-11-26 | 贵州天能配电科技有限公司 | A kind of Medium Voltage Switchgear door interlocking mechanism |
| US20170278655A1 (en) * | 2014-10-29 | 2017-09-28 | Zhejiang Limited Corporation Of Daodu Intelligent Switch | Embedded-pole hv electrical apparatus combination switchgear |
| KR20170036935A (en) * | 2015-09-24 | 2017-04-04 | 현대중공업 주식회사 | Door interlock device of switchboard |
| CN105406386A (en) * | 2015-12-03 | 2016-03-16 | 平高集团有限公司 | Interlocking device of valve and grounding switch |
| CN106328428A (en) * | 2016-10-25 | 2017-01-11 | 南京南瑞集团公司 | Door interlocking device for three-station switching mechanism |
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| CN110931286A (en) * | 2019-11-05 | 2020-03-27 | 许继集团有限公司 | Switchgear and three-position switch and circuit breaker interlocking device thereof |
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