CN113257609A - Disconnecting switch and grounding switch interlocking structure and switch equipment using same - Google Patents
Disconnecting switch and grounding switch interlocking structure and switch equipment using same Download PDFInfo
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- CN113257609A CN113257609A CN202110420762.7A CN202110420762A CN113257609A CN 113257609 A CN113257609 A CN 113257609A CN 202110420762 A CN202110420762 A CN 202110420762A CN 113257609 A CN113257609 A CN 113257609A
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- grounding
- blocking plate
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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
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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
- H01H31/003—Earthing switches
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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
-
- 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
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention provides an interlocking structure of an isolating switch and a grounding switch and a switch device using the same, wherein the interlocking structure comprises: the blocking plate is provided with an isolation shielding part and a grounding shielding part; the blocking plate is movably installed on the rack in a guiding way; the isolating switch locking cam is in transmission fit with the isolating switch operating shaft and is used for jacking the blocking plate to enable the blocking plate to move upwards or downwards so that the grounding shielding part shields the grounding switch operating shaft; the earthing switch interlocking cam is in transmission fit with the earthing switch operating shaft and is used for jacking the blocking plate to enable the blocking plate to move reversely, so that the isolation shielding part shields the isolating switch operating shaft; and the elastic piece is arranged between the blocking plate and the rack. According to the invention, the up-and-down movement of the blocking plate is realized through the two interlocking cams, so that the blocking plate blocks the operation shaft of the isolating switch or the operation shaft of the grounding switch, and the interlocking of the isolating switch and the grounding switch is realized. The two interlocking cams are directly driven to rotate by the operating mechanism, the whole structure is simple and compact, the assembly is convenient, the assembly efficiency can be improved, and the manufacturing cost is reduced.
Description
Technical Field
The invention relates to the technical field of switch equipment, in particular to an interlocking structure of an isolating switch and a grounding switch and switch equipment using the structure.
Background
At present, the switchgear adopting the independent disconnecting switch and the grounding switch needs to be respectively provided with the interlocking devices of the disconnecting switch lock grounding switch and the grounding switch lock disconnecting switch, namely two sets of interlocking devices need to be arranged, so that the structure of the switchgear is very complex, and the disadvantages of inconvenient assembly, low assembly efficiency and high manufacturing cost exist.
Disclosure of Invention
The invention aims to provide an interlocking structure of an isolating switch and a grounding switch, which has a simple structure; the invention also aims to provide a switch device using the structure.
In order to achieve the purpose, the interlocking structure of the isolating switch and the grounding switch adopts the following technical scheme:
isolator and earthing switch interlocking structure includes:
the blocking plate is provided with an isolation shielding part and a grounding shielding part, the isolation shielding part is used for shielding an isolation switch operating shaft of the isolation switch operating mechanism, and the grounding shielding part is used for shielding a grounding switch operating shaft of the grounding switch operating mechanism;
the isolating switch operating mechanism and the grounding switch operating mechanism are respectively positioned on the upper side and the lower side of the blocking plate;
the isolating switch operating mechanism is used for driving the isolating switch operating shaft to rotate and press the blocking plate, so that the blocking plate moves upwards or downwards, the grounding shielding part shields the grounding switch operating shaft, and the blocking plate is provided with an isolating pressing structure used for pressing and matching with the isolating switch operating shaft;
the earthing switch interlocking cam is arranged on the earthing switch operating mechanism and is in transmission fit with the earthing switch operating shaft, so that the earthing switch operating shaft rotates to push the blocking plate when the earthing switch is switched on, the blocking plate moves downwards or upwards, the isolation blocking part blocks the isolating switch operating shaft, and an earthing jacking structure which is in jacking fit with the earthing switch interlocking cam is arranged on the blocking plate;
the elastic component sets up between closure plate and frame for atress warp when closure plate upwards or moves down, for the reverse of closure plate resets and provides the power that resets, and the elastic component still is used for making the closure plate expose isolator operating axis and earthing switch operating axis when isolator and earthing switch all are in the separating brake state.
The beneficial effects of the above technical scheme are that: the interlocking structure comprises a blocking plate, a rack, an isolating switch locking cam, a grounding switch interlocking cam and an elastic piece, wherein the rack is used for realizing the guiding movement installation of the blocking plate, and if the guiding movement direction of the blocking plate is defined to be the vertical direction, an isolating switch operating mechanism and a grounding switch operating mechanism are respectively positioned at the upper side and the lower side of the blocking plate, so that the position relation among the isolating switch operating mechanism, the grounding switch operating mechanism and the blocking plate is defined.
The closure plate has isolation shielding part and ground shielding part, the isolation switch lock cam is installed on the isolation switch operating mechanism and is in transmission fit with the isolation switch operating shaft, therefore, when the isolation switch is switched on, the isolation switch operating shaft can drive the isolation switch lock cam to rotate, the isolation switch lock cam can be jacked to press the closure plate when rotating, the closure plate is enabled to move upwards or downwards, and then the ground shielding part is enabled to shield the ground switch operating shaft, so that after the isolation switch is switched on in place, the ground switch operating shaft can not be operated due to shielding, and interlocking of the ground switch and the isolation switch is realized. And the isolating jacking structure arranged on the blocking plate is conveniently in jacking fit with the isolating associated lock cam.
Similarly, the earthing switch interlocking cam is arranged on the earthing switch operating mechanism and is in transmission fit with the earthing switch operating shaft, so that when the earthing switch is switched on, the earthing switch operating shaft can drive the earthing switch interlocking cam to rotate, the earthing switch interlocking cam can press the blocking plate when rotating, the blocking plate can move downwards or upwards, namely the blocking plate can move reversely, the isolation shielding part can shield the isolating switch operating shaft, and therefore after the earthing switch is switched on in place, the isolating switch operating shaft cannot be operated due to shielding, and interlocking of the isolating switch and the earthing switch is achieved. The grounding jacking structure arranged on the blocking plate is conveniently in jacking fit with the interlocking cam of the grounding switch.
In addition, because the elastic component sets up between closure plate and frame, atress warp when the closure plate upwards or moves down, when isolator or earthing switch separating brake like this, also when isolator lock cam or earthing switch interlocking cam reverse rotation, can provide reset power for the reverse reset of closure plate, make the closure plate automatically get back to initial position, relieve the sheltering from to isolator operating axis or earthing switch operating axis, also the elastic component can make the closure plate expose isolator operating axis and earthing switch operating axis when isolator and earthing switch all are in the separating brake state, in order to make things convenient for follow-up to carry out the combined floodgate operation to two switches.
The installation of the blocking plate is realized through the rack, the up-and-down movement of the blocking plate is realized through the isolating link lock cam and the grounding switch interlocking cam, so that the blocking plate can shield the isolating switch operating shaft or the grounding switch operating shaft, and the interlocking between the isolating switch and the grounding switch is realized. And two interlocking cams are all installed on corresponding operating device, directly utilize operating device itself to drive the rotation, and the structure is compacter, need not to set up in addition and is used for driving the drive arrangement that the closure plate reciprocated, has simplified the structure setting. Meanwhile, the reset of the blocking plate is realized through the elastic piece, the whole structure is simple and compact, the assembly is convenient, the assembly efficiency can be improved, and the manufacturing cost is reduced.
Furthermore, in order to facilitate the manufacture of the blocking plate, the blocking plate comprises a flat plate body, the isolating jacking structure is an isolating jacking plate vertically connected with the plate body, and the grounding jacking structure is a grounding jacking plate vertically connected with the plate body.
Furthermore, in order to facilitate processing and manufacturing, the isolation top pressure plate and/or the grounding top pressure plate are integrally connected with the plate body or are fixedly welded on the plate body.
Furthermore, for convenience of use, the definition isolation association locking cam is located on the front side of the plate body, the earthing switch interlocking cam is located on the rear side of the plate body, the isolation jacking plate is located on the front side of the plate body, and the earthing jacking plate is located on the rear side of the plate body.
Further, in order to facilitate the arrangement and use of the elastic member, the elastic member includes an upper elastic member and a lower elastic member, the upper elastic member is connected between the upper portion of the blocking plate and the frame, and the lower elastic member is connected between the lower portion of the blocking plate and the frame.
Furthermore, in order to facilitate the arrangement of the machine frame, the machine frame comprises an upper machine frame, a middle machine frame and a lower machine frame; the upper frame is fixedly arranged on the isolating switch operating mechanism, and the upper elastic piece is connected between the upper part of the blocking plate and the upper frame; the middle frame is used for being fixedly arranged on the isolating switch operating mechanism and the grounding switch operating mechanism; the lower frame is fixedly arranged on the grounding switch operating mechanism, and the lower elastic piece is connected between the lower part of the blocking plate and the lower frame.
Furthermore, in order to facilitate the installation of the upper elastic part and the lower elastic part, the upper frame comprises an upper leveling plate which is leveled with the blocking plate, and the upper leveling plate is used for installing the upper elastic part; the middle frame comprises a joint plate jointed with the blocking plate; the lower housing includes a lower flush plate flush with the closure plate for mounting the lower spring.
Furthermore, in order to facilitate the configuration and installation of the upper elastic part and the lower elastic part, the upper elastic part and the lower elastic part are tension springs, and hanging holes are respectively formed in the upper parallel and level plate, the blocking plate and the lower parallel and level plate.
Furthermore, in order to facilitate the guiding of the rack to the blocking plate, a plurality of long holes extending along the vertical direction are formed in the blocking plate, and the blocking plate is matched with the rack in a guiding mode through guide nails penetrating through the rack and the long holes.
In order to achieve the purpose, the switch device adopts the following technical scheme:
switchgear, including isolator and earthing switch, still including isolator operating device and the earthing switch operating device of control isolator divide-shut brake, isolator operating device has the isolator operating axis, and earthing switch operating device has the earthing switch operating axis, and switchgear still includes isolator and earthing switch interlocking structure, and isolator and earthing switch interlocking structure include:
the blocking plate is provided with an isolation shielding part and a grounding shielding part, the isolation shielding part is used for shielding the isolating switch operating shaft, and the grounding shielding part is used for shielding the grounding switch operating shaft;
the isolating switch operating mechanism and the grounding switch operating mechanism are respectively positioned on the upper side and the lower side of the blocking plate;
the isolating switch operating mechanism is arranged on the grounding shielding part, and the isolating switch operating mechanism is arranged on the grounding shielding part;
the earthing switch interlocking cam is arranged on the earthing switch operating mechanism and is in transmission fit with the earthing switch operating shaft, so that the earthing switch operating shaft rotates to push the blocking plate when the earthing switch is switched on, the blocking plate moves downwards or upwards, the isolation shielding part shields the isolating switch operating shaft, and an earthing jacking structure which is in jacking fit with the earthing switch interlocking cam is arranged on the blocking plate;
the elastic component sets up between closure plate and frame for atress warp when closure plate upwards or moves down, for the reverse of closure plate resets and provides the power that resets, and the elastic component still is used for making the closure plate expose isolator operating axis and earthing switch operating axis when isolator and earthing switch all are in the separating brake state.
The beneficial effects of the above technical scheme are that: the interlocking structure comprises a blocking plate, a rack, an isolating switch locking cam, a grounding switch interlocking cam and an elastic piece, wherein the rack is used for realizing the guiding movement installation of the blocking plate, and if the guiding movement direction of the blocking plate is defined to be the vertical direction, an isolating switch operating mechanism and a grounding switch operating mechanism are respectively positioned at the upper side and the lower side of the blocking plate, so that the position relation among the isolating switch operating mechanism, the grounding switch operating mechanism and the blocking plate is defined.
The closure plate has isolation shielding part and ground shielding part, the isolation switch lock cam is installed on the isolation switch operating mechanism and is in transmission fit with the isolation switch operating shaft, therefore, when the isolation switch is switched on, the isolation switch operating shaft can drive the isolation switch lock cam to rotate, the isolation switch lock cam can be jacked to press the closure plate when rotating, the closure plate is enabled to move upwards or downwards, and then the ground shielding part is enabled to shield the ground switch operating shaft, so that after the isolation switch is switched on in place, the ground switch operating shaft can not be operated due to shielding, and interlocking of the ground switch and the isolation switch is realized. And the isolating jacking structure arranged on the blocking plate is conveniently in jacking fit with the isolating associated lock cam.
Similarly, the earthing switch interlocking cam is arranged on the earthing switch operating mechanism and is in transmission fit with the earthing switch operating shaft, so that when the earthing switch is switched on, the earthing switch operating shaft can drive the earthing switch interlocking cam to rotate, the earthing switch interlocking cam can press the blocking plate when rotating, the blocking plate can move downwards or upwards, namely the blocking plate can move reversely, the isolation shielding part can shield the isolating switch operating shaft, and therefore after the earthing switch is switched on in place, the isolating switch operating shaft cannot be operated due to shielding, and interlocking of the isolating switch and the earthing switch is achieved. The grounding jacking structure arranged on the blocking plate is conveniently in jacking fit with the interlocking cam of the grounding switch.
In addition, because the elastic component sets up between closure plate and frame, atress warp when the closure plate upwards or moves down, when isolator or earthing switch separating brake like this, also when isolator lock cam or earthing switch interlocking cam reverse rotation, can provide reset power for the reverse reset of closure plate, make the closure plate automatically get back to initial position, relieve the sheltering from to isolator operating axis or earthing switch operating axis, also the elastic component can make the closure plate expose isolator operating axis and earthing switch operating axis when isolator and earthing switch all are in the separating brake state, in order to make things convenient for follow-up to carry out the combined floodgate operation to two switches.
The installation of the blocking plate is realized through the rack, the up-and-down movement of the blocking plate is realized through the isolating link lock cam and the grounding switch interlocking cam, so that the blocking plate can shield the isolating switch operating shaft or the grounding switch operating shaft, and the interlocking between the isolating switch and the grounding switch is realized. And two interlocking cams are all installed on corresponding operating device, directly utilize operating device itself to drive the rotation, and the structure is compacter, need not to set up in addition and is used for driving the drive arrangement that the closure plate reciprocated, has simplified the structure setting. Meanwhile, the reset of the blocking plate is realized through the elastic piece, the whole structure is simple and compact, the assembly is convenient, the assembly efficiency can be improved, and the manufacturing cost is reduced.
Furthermore, in order to facilitate the manufacture of the blocking plate, the blocking plate comprises a flat plate body, the isolating jacking structure is an isolating jacking plate vertically connected with the plate body, and the grounding jacking structure is a grounding jacking plate vertically connected with the plate body.
Furthermore, in order to facilitate processing and manufacturing, the isolation top pressure plate and/or the grounding top pressure plate are integrally connected with the plate body or are fixedly welded on the plate body.
Furthermore, for convenience of use, the definition isolation association locking cam is located on the front side of the plate body, the earthing switch interlocking cam is located on the rear side of the plate body, the isolation jacking plate is located on the front side of the plate body, and the earthing jacking plate is located on the rear side of the plate body.
Further, in order to facilitate the arrangement and use of the elastic member, the elastic member includes an upper elastic member and a lower elastic member, the upper elastic member is connected between the upper portion of the blocking plate and the frame, and the lower elastic member is connected between the lower portion of the blocking plate and the frame.
Furthermore, in order to facilitate the arrangement of the machine frame, the machine frame comprises an upper machine frame, a middle machine frame and a lower machine frame; the upper frame is fixedly arranged on the isolating switch operating mechanism, and the upper elastic piece is connected between the upper part of the blocking plate and the upper frame; the middle frame is fixedly arranged on the isolating switch operating mechanism and the grounding switch operating mechanism; the lower frame is fixedly arranged on the grounding switch operating mechanism, and the lower elastic piece is connected between the lower part of the blocking plate and the lower frame.
Furthermore, in order to facilitate the installation of the upper elastic part and the lower elastic part, the upper frame comprises an upper leveling plate which is leveled with the blocking plate, and the upper leveling plate is used for installing the upper elastic part; the middle frame comprises a joint plate jointed with the blocking plate; the lower housing includes a lower flush plate flush with the closure plate for mounting the lower spring.
Furthermore, in order to facilitate the configuration and installation of the upper elastic part and the lower elastic part, the upper elastic part and the lower elastic part are tension springs, and hanging holes are respectively formed in the upper parallel and level plate, the blocking plate and the lower parallel and level plate.
Furthermore, in order to facilitate the guiding of the rack to the blocking plate, a plurality of long holes extending along the vertical direction are formed in the blocking plate, and the blocking plate is matched with the rack in a guiding mode through guide nails penetrating through the rack and the long holes.
Drawings
FIG. 1 is a perspective view of one aspect of an interlock structure for a disconnecting switch and a grounding switch according to the present invention;
FIG. 2 is a perspective view of another perspective of the interlock structure of the disconnecting switch and the grounding switch according to the present invention;
FIG. 3 is a perspective view of the isolator and earthing switch interlock arrangement of FIGS. 1 and 2 with the frame, a portion of the isolator operating mechanism and a portion of the earthing switch operating mechanism removed;
FIG. 4 is a schematic diagram of the interlocking structure of the disconnecting switch and the grounding switch in the invention, when both the disconnecting switch and the grounding switch are in the open state;
FIG. 5 is a schematic diagram of the interlocking structure of the disconnecting switch and the grounding switch in the invention when the grounding switch is in closing and the disconnecting switch is in opening;
fig. 6 is a schematic diagram of the interlocking structure of the disconnecting switch and the grounding switch in the invention when the grounding switch is in an open state and the disconnecting switch is in a close state.
In the figure: 1. an isolator operating mechanism; 11. an isolating switch operating shaft; 12. an isolating link lock cam; 2. a ground switch operating mechanism; 21. a ground switch operating shaft; 22. a grounding switch interlock cam; 3. a blocking plate; 31. a plate body; 32. isolating the top pressing plate; 33. a grounding top pressure plate; 34. a long hole; 35. hanging holes at the top of the plate body; 36. hanging holes at the bottom of the plate body; 4. an upper frame; 41. an upper flush plate; 42. an upper rack hanging hole; 5. a middle frame; 51. attaching a plate; 52. a top bending plate; 53. a bottom bending plate; 6. a lower frame; 61. a lower flush plate; 62. a lower rack hanging hole; 7. and (5) guiding the nail.
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 noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
An embodiment of the switching device of the invention is: the switch device comprises an isolating switch and a grounding switch, as shown in fig. 1 and fig. 2, the switch device further comprises an isolating switch operating mechanism 1 for controlling the opening and closing of the isolating switch and a grounding switch operating mechanism 2 for controlling the opening and closing of the grounding switch, and the isolating switch operating mechanism 1 and the grounding switch operating mechanism 2 are both manual operating mechanisms, so that the isolating switch operating mechanism 1 is provided with an isolating switch operating shaft 11, and the grounding switch operating mechanism 2 is provided with a grounding switch operating shaft 21.
The switch equipment further comprises an interlocking structure (hereinafter referred to as interlocking structure) of the disconnecting switch and the grounding switch, as shown in fig. 1, fig. 2 and fig. 3, the interlocking structure comprises an isolating switch lock cam 12, the isolating switch lock cam 12 is installed on the isolating switch operating mechanism 1, and is specifically installed on an intermediate transmission shaft (not marked in the figure) parallel to the isolating switch operating shaft 11, a gear transmission structure is arranged between the intermediate transmission shaft and the isolating switch operating shaft 11, the isolating switch operating shaft 11 can drive the intermediate transmission shaft and the isolating switch lock cam 12 on the intermediate transmission shaft to rotate through the gear transmission structure, and therefore transmission matching between the isolating switch lock cam 12 and the isolating switch operating shaft 11 is indirectly achieved. The arrangement of the isolating switch operating mechanism 1 is determined by the characteristics of the isolating switch operating mechanism 1, and the isolating switch requires the isolating switch operating shaft 11 to rotate for a plurality of circles when the isolating switch is switched on and switched off, and the operating angle required by the isolating switch lock cam 12 is only 90 degrees, so that the isolating switch lock cam 12 is installed on a more proper middle transmission shaft to meet the requirement of an interlocking structure.
The interlocking structure further comprises an earthing switch interlocking cam 22, wherein the earthing switch interlocking cam 22 is installed on the earthing switch operating mechanism 2 and is in transmission fit with the earthing switch operating shaft 21, specifically, the earthing switch interlocking cam 22 is directly installed on the earthing switch operating shaft 21 in a rotation stopping mode and rotates synchronously with the earthing switch operating shaft 21. The arrangement in this embodiment is also determined by the characteristics of the earthing switch operating mechanism 2 itself, and since the earthing switch requires half-turn rotation of the earthing switch operating shaft 21 and half-turn rotation of the required operating angle of the earthing switch interlock cam 22 when the earthing switch is switched on and off, the earthing switch interlock cam 22 is directly attached to the earthing switch operating shaft 21.
Interlocking structure still includes closure plate 3, and closure plate 3 includes the plate body 31 of straight form, and plate body 31 has isolation shielding part and ground connection shielding part, combines shown in fig. 5 and fig. 6, and isolation shielding part is the upper right portion of closure plate 3 for shelter from isolator operating shaft 11, and ground connection shielding part is the lower left portion of closure plate 3 for shelter from ground switch operating shaft 21. The interlocking structure further comprises a frame, the blocking plate 3 is movably installed on the frame in a guiding manner, the direction of the blocking plate 3 in the embodiment is in the up-down direction, as shown in fig. 1 and 2, the isolating switch operating mechanism 1 and the grounding switch operating mechanism 2 are respectively located on the upper side and the lower side of the blocking plate 3.
The blocking plate 3 is provided with an isolation jacking structure which is used for being in jacking fit with the isolation association lock cam 12, the isolation jacking structure in the embodiment is an isolation jacking plate 32 vertically connected with the plate body 31, and the isolation jacking plate 32 is integrally connected with the plate body 31 through bending forming. The blocking plate 3 is further provided with a ground pressure structure for being in pressure fit with the ground switch interlocking cam 22, the ground pressure structure in the embodiment is a ground pressure plate 33 vertically connected with the plate body 31, and the ground pressure plate 33 is welded and fixed on the plate body 31. Also in the present embodiment, since the disconnecting switch lock cam 12 is located on the front side of the plate body 31 and the earthing switch lock cam 22 is located on the rear side of the plate body 31, the disconnecting pressure plate 32 is located on the front side of the plate body 31 and the earthing pressure plate 33 is located on the rear side of the plate body 31.
The interlocking structure further comprises an elastic member (not shown in the figures) arranged between the blocking plate 3 and the frame, the elastic member is used for being stressed and deformed when the blocking plate 3 moves upwards or downwards to provide a reset power for the reverse reset of the blocking plate 3, and the elastic member is also used for enabling the blocking plate 3 to expose the disconnecting switch operating shaft 11 and the grounding switch operating shaft 21 when the disconnecting switch and the grounding switch are in the opening state, as shown in fig. 4.
Specifically, as shown in fig. 1 and 2, the frame includes an upper frame 4, a middle frame 5, and a lower frame 6, the upper frame 4 is fixedly mounted on the disconnecting switch operating mechanism 1, the upper frame 4 includes an L-shaped mounting plate, and a vertical side of the mounting plate forms an upper flush plate 41 flush with the plate body 31. The elastic member includes an upper elastic member connected between the upper portion of the blocking plate and the upper flush plate 41 and a lower elastic member. The upper elastic element in this embodiment is an upper tension spring, so that two plate top hanging holes 35 are formed in the upper portion of the plate 31, and two upper rack hanging holes 42 are correspondingly formed in the upper flush plate 41, one end of the upper tension spring is hooked in the plate top hanging hole 35, and the other end of the upper tension spring is hooked in the upper rack hanging hole 42.
As shown in fig. 1 to 3, the plate 31 is provided with a plurality of elongated holes 34 extending in the vertical direction, and the blocking plate 3 is guided and engaged with the middle frame 5 by the guide pins 7 penetrating through the attachment plate 51 and the elongated holes 34. The blocking plate 3 is suspended by the upper tension spring, as shown in fig. 4, the isolating switch operating shaft 11 and the grounding switch operating shaft 21 are exposed when the isolating switch and the grounding switch are both in the opening state, that is, the two operating shafts are not blocked, and the blocking plate 3 is located in the middle, so that the closing operation of the isolating switch or the closing operation of the grounding switch can be conveniently carried out.
The working principle of the interlocking structure is as follows:
when the disconnecting switch is switched on, the disconnecting switch operating shaft 11 can indirectly drive the disconnecting switch locking cam 12 to rotate, the disconnecting switch locking cam 12 can press the disconnecting top pressure plate 32 when rotating, the blocking plate 3 moves downwards, and then the grounding shielding part shields the grounding switch operating shaft 21, so that after the disconnecting switch is switched on in place, as shown in fig. 6, the grounding switch operating shaft 21 cannot be operated due to being shielded (only one half is shielded in fig. 6, but the operation cannot be guaranteed), and the interlocking of the grounding switch and the disconnecting switch is realized. In the process of closing the isolating switch, the upper tension spring is elongated and deformed, so that when the isolating switch is opened, the reset power can be provided for the upward movement of the blocking plate 3.
When the earthing switch is switched on, the earthing switch operating shaft 21 directly drives the earthing switch interlocking cam 22 to rotate, the earthing switch interlocking cam 22 can press the earthing jacking plate 33 when rotating, so that the blocking plate 3 moves upwards, namely the blocking plate 3 moves reversely, and the isolating and shielding part shields the isolating switch operating shaft 11, therefore, after the earthing switch is switched on in place, as shown in fig. 5, the isolating switch operating shaft 11 cannot be operated due to being shielded (only one half of the isolating switch operating shaft is shielded in fig. 5, but the isolating switch operating shaft is enough to be operated), and the interlocking of the isolating switch and the earthing switch is realized. In the process of closing the grounding switch, the lower tension spring is elongated and deformed, so that when the grounding switch is opened, the lower tension spring can provide reset power for downward movement of the blocking plate 3.
The installation of the blocking plate is realized through the rack, the up-and-down movement of the blocking plate is realized through the isolating link lock cam and the grounding switch interlocking cam, so that the blocking plate can shield the isolating switch operating shaft or the grounding switch operating shaft, and the interlocking between the isolating switch and the grounding switch is realized. And two interlocking cams are all installed on corresponding operating device, directly utilize operating device itself to drive the rotation, and the structure is compacter, need not to set up in addition and is used for driving the drive arrangement that the closure plate reciprocated, has simplified the structure setting. Meanwhile, the reset of the blocking plate is realized through the elastic piece, the whole structure is simple and compact, the assembly is convenient, the assembly efficiency can be improved, and the manufacturing cost is reduced.
In other embodiments of the switching device, the guide between the closure plate and the frame may be provided not with a long hole in the closure plate but with a guide rail and a sliding groove, for example a T-shaped or dovetail-shaped guide rail and sliding groove, between the two.
In other embodiments of the switch device, the upper elastic member and the lower elastic member may be elastic pieces, and at this time, there is no need to provide a hanging hole, and both ends of the elastic pieces are welded or fixed by bolts.
In other embodiments of the switchgear, the upper rack may not include an upper flush plate, the upper rack being staggered front to back with respect to the blanking plate as a whole; similarly, the lower rack can also not comprise a lower parallel and level plate, and the whole lower rack and the blocking plate are staggered front and back; the intermediate frame may also not comprise an abutment plate, for example when the intermediate frame and the closure plate are guided in a guide fit in the form of a guide rail and a slide groove.
In other embodiments of the switchgear, the rack is a one-piece rack.
In other embodiments of the switching device, the elastic member includes only an upper elastic member, the upper elastic member is deformed in tension when the blocking plate moves downward, and the upper elastic member is deformed in compression when the blocking plate moves upward; or the elastic part only comprises a lower elastic part, the lower elastic part is pressed and deformed when the blocking plate moves downwards, and the lower elastic part is pulled and deformed when the blocking plate moves upwards; of course, when only one elastic piece is arranged, the elastic piece can also be arranged between the middle part of the blocking plate and the rack, and two ends of the elastic piece are respectively and fixedly connected with the middle part of the blocking plate and the rack so as to be pulled or pressed to deform when the blocking plate moves up and down.
In other embodiments of the switchgear, the disconnecting switch locking cam and the earthing switch interlocking cam may be both located on the front side or the rear side of the plate body, and accordingly, the disconnecting jacking plate and the earthing jacking plate are both located on the same side of the plate body.
In other embodiments of the switch device, the isolation top pressure plate can be fixed on the plate body in a welding manner, and the grounding top pressure plate can be integrally connected with the plate body through bending; or the two top pressure plates can be arranged in the same way, are welded and fixed or are integrally connected.
In other embodiments of the switchgear, the isolating press structure and the grounding press structure may be both press blocks or press columns fixed on the plate body.
In other embodiments of the switchgear, depending on the specific arrangement of the disconnector operating mechanism and earthing switch operating mechanism, the disconnector operating mechanism can also be located on the lower side of the closure plate, at which time the disconnector lock cam presses the closure plate upwards, while the earthing switch operating mechanism is located on the upper side of the closure plate, and the earthing switch interlock cam presses the closure plate downwards.
In other embodiments of the switch device, the guiding movement direction of the blocking plate may also be a left-right direction, in which case the disconnecting switch operating mechanism and the earthing switch operating mechanism are respectively located on the left and right sides of the blocking plate.
In other embodiments of the switch device, according to the specific structure of the isolating switch operating mechanism, if the opening and closing rotation angle of the isolating switch operating shaft can meet the requirement of the working rotation angle of the isolating switch lock cam, the isolating switch lock cam can be directly installed on the isolating switch operating shaft.
In other embodiments of the switch device, depending on the specific structure of the earthing switch operating mechanism, if the opening and closing rotation angle of the earthing switch operating shaft cannot meet the operating rotation angle requirement of the earthing switch interlocking cam, the earthing switch interlocking cam may be mounted on the intermediate transmission shaft of the earthing switch operating mechanism.
The embodiment of the interlocking structure of the isolating switch and the grounding switch in the invention is as follows: the specific structure of the interlock structure of the disconnecting switch and the grounding switch is the same as that of the interlock structure of the disconnecting switch and the grounding switch in the above-mentioned switch device embodiment, and will not be described again 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. Isolator and earthing switch interlocking structure, its characterized in that includes:
the blocking plate is provided with an isolation shielding part and a grounding shielding part, the isolation shielding part is used for shielding an isolation switch operating shaft of the isolation switch operating mechanism, and the grounding shielding part is used for shielding a grounding switch operating shaft of the grounding switch operating mechanism;
the isolating switch operating mechanism and the grounding switch operating mechanism are respectively positioned on the upper side and the lower side of the blocking plate;
the isolating switch operating mechanism is used for driving the isolating switch operating shaft to rotate and press the blocking plate, so that the blocking plate moves upwards or downwards, the grounding shielding part shields the grounding switch operating shaft, and the blocking plate is provided with an isolating pressing structure used for pressing and matching with the isolating switch operating shaft;
the earthing switch interlocking cam is arranged on the earthing switch operating mechanism and is in transmission fit with the earthing switch operating shaft, so that the earthing switch operating shaft rotates to push the blocking plate when the earthing switch is switched on, the blocking plate moves downwards or upwards, the isolation blocking part blocks the isolating switch operating shaft, and an earthing jacking structure which is in jacking fit with the earthing switch interlocking cam is arranged on the blocking plate;
the elastic component sets up between closure plate and frame for atress warp when closure plate upwards or moves down, for the reverse of closure plate resets and provides the power that resets, and the elastic component still is used for making the closure plate expose isolator operating axis and earthing switch operating axis when isolator and earthing switch all are in the separating brake state.
2. The interlock structure of claim 1, wherein the blocking plate comprises a flat plate body, the pressing structure is a pressing plate vertically connected to the plate body, and the pressing structure is a pressing plate vertically connected to the plate body.
3. The interlocking structure of the disconnecting switch and the grounding switch as claimed in claim 2, wherein the isolating top pressure plate and/or the grounding top pressure plate is integrally connected with the plate body or is fixed on the plate body by welding.
4. The interlock structure of claim 2, wherein the isolating switch and grounding switch is defined such that the isolating switch lock cam is located at the front side of the plate body, the grounding switch interlock cam is located at the rear side of the plate body, the isolating press plate is located at the front side of the plate body, and the grounding press plate is located at the rear side of the plate body.
5. The interlock structure of a disconnecting switch and an earthing switch according to any one of claims 1 to 4, wherein the elastic member comprises an upper elastic member and a lower elastic member, the upper elastic member is connected between the upper portion of the blocking plate and the frame, and the lower elastic member is connected between the lower portion of the blocking plate and the frame.
6. The isolator and earthing switch interlock structure according to claim 5, characterized in that the rack comprises an upper rack, a middle rack and a lower rack; the upper frame is fixedly arranged on the isolating switch operating mechanism, and the upper elastic piece is connected between the upper part of the blocking plate and the upper frame; the middle frame is used for being fixedly arranged on the isolating switch operating mechanism and the grounding switch operating mechanism; the lower frame is fixedly arranged on the grounding switch operating mechanism, and the lower elastic piece is connected between the lower part of the blocking plate and the lower frame.
7. The isolator and earthing switch interlock structure according to claim 6, wherein the upper housing includes an upper flush plate flush with the blanking plate for mounting said upper spring; the middle frame comprises a joint plate jointed with the blocking plate; the lower housing includes a lower flush plate flush with the closure plate for mounting the lower spring.
8. The interlock structure of the disconnecting switch and the grounding switch according to claim 7, wherein the upper elastic member and the lower elastic member are both tension springs, and the upper level plate, the blocking plate and the lower level plate are respectively provided with hanging holes.
9. The interlocking structure of the disconnecting switch and the grounding switch according to any one of claims 1 to 4, wherein the blocking plate is provided with a plurality of elongated holes extending in the vertical direction, and the blocking plate is in guiding fit with the frame through guide pins penetrating through the frame and the elongated holes.
10. The switch equipment comprises an isolating switch, a grounding switch, an isolating switch operating mechanism for controlling the opening and closing of the isolating switch and a grounding switch operating mechanism for controlling the opening and closing of the grounding switch, wherein the isolating switch operating mechanism is provided with an isolating switch operating shaft, and the grounding switch operating mechanism is provided with a grounding switch operating shaft, and the switch equipment is characterized by further comprising the interlocking structure of the isolating switch and the grounding switch according to any one of claims 1-9.
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| CN202110420762.7A CN113257609B (en) | 2021-04-19 | 2021-04-19 | Disconnecting switch and grounding switch interlocking structure and switch equipment using same |
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| CN202110420762.7A CN113257609B (en) | 2021-04-19 | 2021-04-19 | Disconnecting switch and grounding switch interlocking structure and switch equipment using same |
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| CN113257609A true CN113257609A (en) | 2021-08-13 |
| CN113257609B CN113257609B (en) | 2023-02-07 |
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|---|---|
| CN113257609B (en) | 2023-02-07 |
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