CN114976979A - Five-prevention interlocking structure of centrally installed switchgear - Google Patents
Five-prevention interlocking structure of centrally installed switchgear Download PDFInfo
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- CN114976979A CN114976979A CN202210620631.8A CN202210620631A CN114976979A CN 114976979 A CN114976979 A CN 114976979A CN 202210620631 A CN202210620631 A CN 202210620631A CN 114976979 A CN114976979 A CN 114976979A
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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
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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Abstract
The invention discloses a five-prevention interlocking structure of a middle-placed cabinet, which is simpler in structure and smaller in occupied space in a cabinet body; when the cabinet door is closed, the second rotating rod locking rod is matched and embedded into the locking groove to fix the locking cabinet door (at the moment, the grounding switch is in a brake-off state, and the cabinet door cannot be opened); when the cabinet door is opened to needs, need rotate the second bull stick earlier, and then drive first bull stick and rotate, and then drive the ground connection pivot through first bevel gear and second bevel gear and rotate, the ground connection pivot rotates and closes a floodgate with driving earthing switch, when the locking pole rotates to stretching out in the locking groove promptly, earthing switch is in the state of closing a floodgate, and because of the locking pole no longer imbeds the locking groove this moment, so cabinet door side can be opened, that is to say, should put cabinet five prevent that interlocking structure can guarantee just can open the cabinet door under the state that earthing switch closed a floodgate in this, thereby put cabinet five prevent the effect in the realization, safety.
Description
Technical Field
The invention relates to the technical field of centrally installed switchgear, in particular to a five-prevention interlocking structure of a centrally installed switchgear.
Background
In high-voltage complete electrical equipment, in order to ensure the reliable operation of metal closed switch equipment (such as a built-in cabinet) and the personal safety of operators, the built-in cabinet mainly comprises operating elements such as a vacuum circuit breaker, a disconnecting switch and an earthing switch, and measuring and protecting elements such as a mutual inductor to form a power supply loop. In order to avoid short circuit or personnel electric shock, equipment damage caused by misoperation, the interlocking requirement of five prevention needs to be met according to national regulations, namely five anti-misoperation functions: 1. the circuit breaker is prevented from being opened and closed by mistake; 2. the isolating switch is prevented from being switched on and off by mistake when the load is carried; 3. preventing people from entering the electrified interval by mistake; 4. an anti-electrification switch; 5. and the grounding prevention switch is switched on to supply power.
The existing centrally installed switchgear generally realizes five-prevention interlocking by means of an operating rod for switching on or switching off a controllable grounding switch; when the operating rod operates the grounding switch to open, the interlocking structure is connected with the clamping groove, the hole or the locking hook of the cabinet door, so that the cabinet door of the middle cabinet cannot be opened; when the operating rod operates the grounding switch to be switched on, the interlocking structure is separated from a clamping groove, a hole or a locking hook on the rear door, and the cabinet door of the middle-placed cabinet can be opened at the moment.
However, the five-prevention interlocking structure of the existing middle-placed cabinet is complex, the space occupied inside the middle-placed cabinet is large, and the installation and the arrangement of other electrical equipment in the middle-placed cabinet are not facilitated.
Disclosure of Invention
The invention mainly aims to provide a five-prevention interlocking structure of a middle-placed cabinet, and aims to solve the problems that the existing five-prevention interlocking structure of the middle-placed cabinet is complex, the occupied space inside the middle-placed cabinet is large, and the installation and the arrangement of other electrical equipment in the middle-placed cabinet are not facilitated.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a five-prevention interlocking structure of a centrally installed switchgear comprises a switchgear body, a cabinet door, a grounding rotating shaft, a first bevel gear, a second bevel gear, a first rotating rod, a second rotating rod, a locking rod and a locking sheet; a grounding switch is arranged in the cabinet body; the grounding rotating shaft is rotatably arranged on the grounding switch and used for driving the grounding switch to be switched on or switched off; the first bevel gear is coaxially connected to the grounding rotating shaft; the second bevel gear is coaxially connected to the first rotating rod; the first bevel gear is meshed with the second bevel gear; the first rotating rod and the second rotating rod are rotatably arranged in the cabinet body; the cabinet body comprises side plates; the first rotating rod is parallel to the side plate, and the first rotating rod is close to the side plate; the grounding rotating shaft is perpendicular to the side plate; the second rotating rod is used for driving the first rotating rod to rotate synchronously; the locking rod is vertically connected to the second rotating rod; the cabinet door is hinged to the cabinet body; the locking piece is connected with the cabinet door; the locking sheet is provided with a locking groove; the second rotating rod can rotate to the locking rod to be matched and embedded into the locking groove, so that the locking cabinet door is fixed.
Preferably, the device further comprises a supporting box connected to the side plate; the support box comprises a first box plate and a second box plate; the first box plate is vertically connected to the side plate; a gap space is formed between the supporting box and the cabinet door; when the cabinet door is closed, the locking piece is matched and embedded into the gap space; the first rotating rod is rotatably arranged on the first box plate in a penetrating mode; the second rotating rod penetrates through the second box plate; a rotating handle is arranged at one end of the second rotating rod, which extends out of the second box plate; the cabinet door is provided with a circular opening; when the cabinet door is closed, the rotating handle is positioned in the round opening.
Preferably, an inner cylinder groove is formed in one end, far away from the second bevel gear, of the first rotating rod; the cross section of the inner cylinder groove is rectangular; one end of the second rotating rod, which is far away from the rotating handle, is connected with a connecting rod; the cross section of the connecting rod is rectangular, and the connecting rod is matched with the inner barrel groove in a sliding embedded mode.
Preferably, the second rotating rod axially slides and penetrates through the second box plate, so that the second rotating rod can axially slide relative to the first rotating rod; the locking groove comprises a vertical groove extending vertically and a transverse groove extending horizontally, and the opening of the vertical groove faces upwards; the transverse groove is communicated with one side, far away from the cabinet door, of the bottom of the vertical groove.
Preferably, the device further comprises an interlocking spring, an annular plate and a contact plate; the contact plate is vertically sleeved on the second rotating rod; the interlocking spring is sleeved on the second rotating rod; one end of the interlocking spring is connected to one side wall of the second box plate facing the first box plate; the other end of the interlocking spring is connected to the annular plate; the interlocking spring is in a compressed state so that the annular plate abuts against the contact plate.
Preferably, the device also comprises a rotating arm, a first limit component, a trigger rod and a first contact switch; the rotating arm is vertically connected to one end, close to the side plate, of the grounding rotating shaft; the first limiting assembly is arranged on the side plate; the trigger rod is vertically connected to one side of the contact plate close to the second box plate; the first contact switch is arranged on one side wall of the second box plate facing the first box plate; when the locking rod is positioned in the vertical groove, the trigger rod is contacted with the first contact switch to trigger the first contact switch; when the first contact switch is triggered, the first limiting assembly is located in a first state; when the first contact switch is not triggered, the first limiting assembly is located in a second state; when the first limiting assembly is in a first state, the first limiting assembly does not limit the rotation of the rotating arm; when the first limiting assembly is located in the second state, the first limiting assembly limits the rotation of the rotating arm.
Preferably, the first limiting assembly comprises a first connecting frame, a first stop lever, a first baffle, a first spring and a first electromagnet; the first connecting frame comprises a first connecting arm and a first vertical arm; the first vertical arm is connected to one side, far away from the side plate, of the first connecting arm; the first stop lever is slidably arranged through the first vertical arm; the first baffle is vertically connected to the first stop lever; the first spring is sleeved on the first stop lever; one end of the first spring is connected to one side, facing the side plate, of the first vertical arm, and the other end of the first spring is connected to the first baffle; the first spring is in a compressed state, so that the first stop lever abuts against the side plate; the first electromagnet is arranged on one side, facing the side plate, of the first vertical arm; the first electromagnet is used for attracting the first baffle; the first contact switch is used for controlling the starting and stopping of the first electromagnet.
Preferably, the device also comprises a second contact switch and a second limit component; the second contact switch is arranged on the supporting box; when the cabinet door is closed, the locking piece is abutted with the second contact switch to trigger the second contact switch; when the second contact switch is triggered, the second limiting assembly is located in a third state; when the second contact switch is not triggered, the second limiting assembly is located in a fourth state; when the second limiting assembly is in a third state, the second limiting assembly does not limit the rotation of the rotating arm; when the second limiting assembly is located in the fourth state, the second limiting assembly limits the rotation of the rotating arm.
Preferably, the structure of the second limiting component is consistent with that of the first limiting component.
Preferably, the device also comprises a support column and a bearing seat; one end of the supporting column is connected to the side plate; the bearing seat is connected to one end, far away from the side plate, of the supporting column; the first rotating rod is rotatably arranged in the bearing seat in a penetrating mode.
Compared with the prior art, the invention at least has the following beneficial effects:
the five-prevention interlocking structure of the middle-placed cabinet is simpler in structure, occupies smaller space in the cabinet body, and is more beneficial to installation and arrangement of other electrical equipment in the middle-placed cabinet; specifically, when the cabinet door is closed, the second rotating rod locking rod is embedded into the locking groove in a matched mode so as to fix the locked cabinet door (at the moment, the grounding switch is in a brake-off state, and the cabinet door cannot be opened); when the cabinet door is opened to needs, need rotate the second bull stick earlier, and then drive first bull stick and rotate, and then drive the ground connection pivot through first bevel gear and second bevel gear and rotate, the ground connection pivot rotates and closes a floodgate with driving earthing switch, when the locking pole rotates to stretching out in the locking groove promptly, earthing switch is in the state of closing a floodgate, and because of the locking pole no longer imbeds the locking groove this moment, so cabinet door side can be opened, that is to say, should put cabinet five prevent that interlocking structure can guarantee just can open the cabinet door under the state that earthing switch closed a floodgate in this, thereby put cabinet five prevent the effect in the realization, safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a five-prevention interlocking structure of a centrally installed switchgear according to the present invention;
FIG. 2 is an enlarged view of detail A in FIG. 1;
FIG. 3 is an enlarged view of detail B in FIG. 1;
fig. 4 is a schematic partial structural diagram (1) of an embodiment of a five-prevention interlocking structure of a centrally installed switchgear according to the present invention;
fig. 5 is a partial structural schematic view (2) of an embodiment of a five-prevention interlocking structure of a centrally installed switchgear according to the present invention;
fig. 6 is a partial structural schematic view (3) of an embodiment of a five-prevention interlocking structure of a centrally installed switchgear according to the present invention.
Description of reference numerals:
110. a cabinet body; 120. a grounding switch; 130. a side plate; 140. a grounding rotating shaft; 150. a first bevel gear; 160. a second bevel gear; 170. a first rotating lever; 180. a support column; 190. a bearing seat; 210. a cabinet door; 220. a first cassette plate; 230. a second cassette plate; 240. an inner cylinder groove; 250. a connecting rod; 260. a second rotating rod; 270. a contact plate; 280. an annular plate; 290. an interlock spring; 310. a trigger lever; 320. a first contact switch; 330. a circular port; 340. a handle is rotated; 350. a gap space; 360. a lock lever; 370. a locking piece; 380. a locking groove; 390. a second contact switch; 410. a support box; 420. a first connecting arm; 430. a first vertical arm; 440. a first bar; 450. a first baffle plate; 460. a first spring; 470. a first electromagnet; 480. a rotating arm; 490. a second connecting arm; 510. a second vertical arm; 520. a second bar; 530. a second spring; 540. a vertical slot; 550. a transverse groove.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a five-prevention interlocking structure of a centrally installed switchgear.
Referring to fig. 1 to fig. 6, in an embodiment of a five-prevention interlocking structure of a middle cabinet according to the present invention, the five-prevention interlocking structure of the middle cabinet includes a cabinet body 110, a cabinet door 210, a grounding rotating shaft 140, a first bevel gear 150, a second bevel gear 160, a first rotating rod 170, a second rotating rod 260, a locking rod 360, and a locking plate 370; a grounding switch 120 is arranged in the cabinet body 110; the grounding rotating shaft 140 is rotatably disposed on the grounding switch 120 for driving the grounding switch 120 to close or open; the first bevel gear 150 is coaxially connected to the ground rotating shaft 140; the second bevel gear 160 is coaxially connected to the first rotating shaft 170; the first bevel gear 150 and the second bevel gear 160 are engaged; the first rotating rod 170 and the second rotating rod 260 are both rotatably arranged in the cabinet body 110; the cabinet 110 includes side panels 130; the first rotating rod 170 is parallel to the side plate 130, and the first rotating rod 170 is close to the side plate 130; the grounding rotating shaft 140 is perpendicular to the side plate 130; the second rotating rod 260 is used for driving the first rotating rod 170 to rotate synchronously; the locking lever 360 is vertically connected to the second rotating lever 260; the cabinet door 210 is hinged to the cabinet body 110; the locking piece 370 is connected to the cabinet door 210; the locking piece 370 is provided with a locking groove 380; the second rotating rod 260 can rotate until the locking rod 360 is engaged with the locking groove 380 to fix the locking cabinet door 210.
The five-prevention interlocking structure of the centrally installed switchgear is simpler in structure, occupies smaller space in the switchgear body 110, and is more beneficial to installation and arrangement of other electrical equipment in the centrally installed switchgear; specifically, when the cabinet door 210 is closed, the locking rod 360 of the second rotating rod 260 is fitted into the locking groove 380 to fix the locking cabinet door 210 (at this time, the grounding switch 120 is in the open state, and the cabinet door 210 cannot be opened); when cabinet door 210 needs to be opened, need rotate second bull stick 260 earlier, and then drive first bull stick 170 and rotate, and then drive ground connection pivot 140 through first bevel gear 150 and second bevel gear 160 and rotate, ground connection pivot 140 rotates in order to drive earthing switch 120 and closes a floodgate, when 360 rotations of locking pole extremely stretch out in locking groove 380 promptly, earthing switch 120 is in the state of closing a floodgate, and this moment because of locking pole 360 no longer imbeds locking groove 380, so cabinet door 210 side can be opened, that is to say, this put cabinet five-prevention interlocking structure can guarantee just can open cabinet door 210 under the state of earthing switch 120 combined floodgate, thereby put cabinet five-prevention effect in the realization, safety is higher.
In addition, the five-prevention interlocking structure of the centrally installed switchgear further comprises a supporting box 410 connected to the side plate 130; the support case 410 includes a first case plate 220 and a second case plate 230 parallel to each other; the first box panel 220 is attached perpendicularly to the side panel 130; a gap space 350 is formed between the supporting box 410 and the cabinet door 210; when the cabinet door 210 is closed, the locking piece 370 is fitted into the notch space 350; the first rotating rod 170 is rotatably arranged on the first box plate 220 in a penetrating way; the second rotating rod 260 is arranged on the second box plate 230 in a penetrating way; the second box plate 230 is closer to the cabinet door 210 than the first box plate 220 (i.e., the first box plate 220 is closer to the ground switch 120 than the second box plate 230); a rotating handle 340 is arranged at one end of the second rotating rod 260, which extends out of the second box plate 230; the cabinet door 210 is provided with a circular opening 330; when the cabinet door 210 is closed, the stem 340 is positioned within the circular opening 330.
With such an arrangement, it is more convenient for an operator to manually rotate the rotating handle 340 to drive the second rotating rod 260 to rotate, and further to synchronously drive the first rotating rod 170 to rotate, so as to drive the grounding rotating shaft 140 to rotate, and further to operate the opening and closing of the grounding switch 120.
Meanwhile, an inner barrel groove 240 is formed at one end of the first rotating rod 170 away from the second bevel gear 160; the inner cylindrical groove 240 and the first rotating rod 170 share a central axis; the cross section of the inner cylinder groove 240 is rectangular; one end of the second rotating rod 260 far away from the rotating handle 340 is connected with a connecting rod 250; the cross section of the connecting rod 250 is rectangular, and the connecting rod 250 is embedded into the inner cylinder groove 240 in a sliding manner; the first and second rotating shafts 170 and 260 share a central axis. This arrangement allows the second rotary lever 260 to slide axially relative to the first rotary lever 170 to adjust the position of the locking lever 360 to better engage the locking lever 360 in the locking slot 380.
Specifically, the second rotating rod 260 axially slides and penetrates through the second box plate 230, so that the second rotating rod 260 can axially slide relative to the first rotating rod 170; when the cabinet door 210 is closed, the cabinet door 210 is perpendicular to the side plate 130, and the locking piece 370 is parallel to the side plate 130; the locking groove 380 comprises a vertical groove 540 extending vertically and a horizontal groove 550 extending horizontally, and the opening of the vertical groove 540 faces upwards; the horizontal slot 550 is communicated with the side of the bottom of the vertical slot 540 far away from the cabinet door 210.
That is, when the locking rod 360 is inserted into the locking groove 380, it is inserted into the vertical groove 540 first, and when the locking rod 360 is located at the bottom of the vertical groove 540, it pushes the second rotating rod 260 to slide toward the direction close to the first rotating rod 170, so that the locking rod 360 is inserted into the horizontal groove 550, and thus the locking effect of the locking rod 360 on the locking piece 370 is better.
In addition, the five-prevention interlocking structure of the centrally installed switchgear further comprises an interlocking spring 290, an annular plate 280 and a contact plate 270; the contact plate 270 is vertically sleeved on the second rotating rod 260, that is, the contact plate 270 is fixedly connected with the second rotating rod 260; the locking lever 360 is connected to the outer edge of the contact plate 270; the interlocking spring 290 is sleeved on the second rotating rod 260; one end of the interlocking spring 290 is connected to a side wall of the second cartridge plate 230 facing the first cartridge plate 220; the other end of the interlock spring 290 is connected to the annular plate 280; the annular plate 280 is movably sleeved on the second rotating rod 260; the interlock spring 290 is compressed to allow the annular plate 280 to abut the contact plate 270 and the second lever 260 to abut the first lever 170.
By the arrangement, the annular plate 280 is abutted to the contact plate 270 in the normal state, so that the second rotating rod 260 is abutted to the first rotating rod 170, the locking rod 360 is abutted to the transverse groove 550, the locking rod 360 is prevented from sliding out of the locking groove 380 in a wrong mode, and the safety performance is better.
Meanwhile, the five-prevention interlocking structure of the centrally installed switchgear further comprises a rotating arm 480, a first limiting component, a trigger rod 310 and a first contact switch 320; the rotating arm 480 is vertically connected to one end of the grounding rotating shaft 140 close to the side plate 130; the swivel arm 480 is parallel to the side plate 130; the first limiting assembly is arranged on the side plate 130; the trigger lever 310 is vertically connected to a side of the contact plate 270 adjacent to the second cartridge plate 230; the first contact switch 320 is disposed on a sidewall of the second box plate 230 facing the first box plate 220; the trigger lever 310 is directly opposite to the first contact switch 320; when the locking lever 360 is positioned in the vertical groove 540, the triggering lever 310 contacts the first contact switch 320 to trigger the first contact switch 320; when the first contact switch 320 is triggered, the first limit component is in a first state; when the first contact switch 320 is not triggered, the first limit component is in a second state; when the first limiting assembly is in the first state, the first limiting assembly does not limit the rotation of the rotating arm 480; when the first limiting component is in the second state, the first limiting component limits the rotation of the rotating arm 480 to limit the closing of the grounding switch 120.
Through the above technical solution, the earthing switch 120 can be prevented from being switched on due to misoperation, specifically, only when the second rotating rod 260 is pulled out in a direction away from the first rotating rod 170 (i.e. the locking rod 360 exits from the transverse groove 550 and enters the vertical groove 540), at this time, the trigger rod 310 contacts with the first contact switch 320 (as shown in fig. 2) to trigger the first contact switch 320, the first limiting component is in the first state, at this time, the first limiting component does not limit the rotation of the rotating arm 480, so that the second rotating rod 260 can drive the first rotating rod 170 to rotate, thereby driving the earthing rotating shaft 140 to rotate, and thereby driving the earthing switch 120 to be switched on; that is, only when the second rotating rod 260 is pulled out in a direction away from the first rotating rod 170, the earthing switch 120 can be driven to be closed, so that the phenomenon that the earthing switch 120 is operated to be closed due to misoperation can be reduced, and safety is improved.
Specifically, as shown in fig. 3 and 4, the first limiting assembly includes a first connecting frame, a first stop lever 440, a first blocking plate 450, a first spring 460 and a first electromagnet 470; the first link frame includes a first link arm 420 and a first vertical arm 430; the first connecting arm 420 is connected to the side plate 130; the first vertical arm 430 is connected to one side of the first connecting arm 420 far away from the side plate 130; the first vertical arm 430 is parallel to the side plate 130; the first stop lever 440 is slidably disposed through the first vertical arm 430; the first blocking lever 440 is perpendicular to the side plate 130; the first baffle 450 is vertically connected to the first blocking rod 440; the first spring 460 is sleeved on the first blocking rod 440; one end of the first spring 460 is connected to a side of the first vertical arm 430 facing the side plate 130, and the other end of the first spring 460 is connected to the first barrier 450; the first spring 460 is compressed to make the first stop lever 440 abut against the side plate 130; the first electromagnet 470 is disposed at a side of the first vertical arm 430 facing the side plate 130; the first electromagnet 470 is used for attracting the first baffle 450; the first contact switch 320 is used to control the on/off of the first electromagnet 470.
When the first electromagnet 470 attracts the first baffle 450, the first position-limiting assembly is in a first state, i.e., the first blocking rod 440 and the side plate 130 directly keep a distance, so that the rotating arm 480 can rotate; when the first electromagnet 470 does not attract the first blocking plate 450, the first position-limiting assembly is in the second state, and at this time, the first blocking rod 440 abuts against the side plate 130, so that the rotating arm 480 cannot rotate clockwise (as shown in fig. 4, that is, cannot be closed).
In addition, the five-prevention interlocking structure of the centrally installed switchgear further comprises a second contact switch 390 and a second limiting component; the second contact switch 390 is provided to the support case 410; when the cabinet door 210 is closed, the locking piece 370 abuts against the second contact switch 390 to trigger the second contact switch 390; when the second contact switch 390 is triggered, the second limit component is in a third state; when the second contact switch 390 is not triggered, the second limit component is in the fourth state; when the second limiting assembly is in the third state, the second limiting assembly does not limit the rotation of the rotating arm 480; when the second limiting component is in the fourth state, the second limiting component limits the rotation of the rotating arm 480 to limit the opening of the grounding switch 120.
Through the above technical solution, the grounding switch 120 can be prevented from being opened due to misoperation, specifically, the grounding switch 120 should be in a closing state (as shown in fig. 5) after the cabinet door 210 is opened, at this time, the locking piece 370 is not abutted to the second contact switch 390, that is, the second contact switch 390 is not triggered, so that the second limiting component is in a fourth state, and at this time, the second limiting component can limit the rotation of the rotating arm 480; therefore, only when the cabinet door 210 is closed and the locking piece 370 abuts against the second contact switch 390, the second contact switch 390 is triggered, so that the second limiting component is in the third state, at this time, the second limiting component does not limit the rotation of the rotating arm 480 any more, so that the second rotating rod 260 can drive the first rotating rod 170 to rotate, the grounding rotating shaft 140 is driven to rotate, and the grounding switch 120 is driven to open; only when cabinet door 210 closes, can drive earthing switch 120 closing, safer promptly.
Specifically, the structure of the second limiting component is consistent with that of the first limiting component. That is, the second limiting assembly includes a second connecting frame, a second blocking rod 520, a second blocking plate (not numbered), a second spring 530 and a second electromagnet (not numbered); the second link frame includes a second link arm 490 and a second vertical arm 510; the second connecting arm 490 is connected to the side plate 130; the second vertical arm 510 is connected to a side of the second connecting arm 490 remote from the side plate 130; the second vertical arm 510 is parallel to the side plate 130; the second blocking rod 520 is slidably arranged through the second vertical arm 510; the second blocking lever 520 is perpendicular to the side plate 130; the second barrier is vertically connected to the second barrier rod 520; the second spring 530 is sleeved on the second stop lever 520; one end of the second spring 530 is connected to the side of the second vertical arm 510 facing the side plate 130, and the other end of the second spring 530 is connected to the second barrier; the second spring 530 is compressed to make the second stop lever 520 abut against the side plate 130; the second electromagnet is arranged on one side of the second vertical arm 510 facing the side plate 130; the first electromagnet 470 is used for attracting the second baffle; the second contact switch 390 is used for controlling the on-off of the second electromagnet.
When the second electromagnet attracts the second baffle, the first person limiting assembly is in a third state, i.e., the second baffle 520 and the side plate 130 directly keep a distance, so that the rotating arm 480 can rotate; when the second electromagnet does not attract the second baffle, the second limiting assembly is in the fourth state, and at this time, the second baffle 520 abuts against the side plate 130, so that the rotating arm 480 cannot rotate counterclockwise (i.e., cannot be opened as shown in fig. 5).
Meanwhile, the five-prevention interlocking structure of the centrally installed switchgear further comprises a supporting column 180 and a bearing seat 190; one end of the supporting column 180 is connected to the side plate 130; the bearing block 190 is connected to one end of the support column 180 far away from the side plate 130; the first rotating rod 170 is rotatably inserted through the bearing housing 190.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A five-prevention interlocking structure of a centrally installed switchgear is characterized by comprising a switchgear body, a cabinet door, a grounding rotating shaft, a first bevel gear, a second bevel gear, a first rotating rod, a second rotating rod, a locking rod and a locking sheet; a grounding switch is arranged in the cabinet body; the grounding rotating shaft is rotatably arranged on the grounding switch and used for driving the grounding switch to be switched on or switched off; the first bevel gear is coaxially connected to the grounding rotating shaft; the second bevel gear is coaxially connected to the first rotating rod; the first bevel gear is meshed with the second bevel gear; the first rotating rod and the second rotating rod are rotatably arranged in the cabinet body; the cabinet body comprises side plates; the first rotating rod is parallel to the side plate, and the first rotating rod is close to the side plate; the grounding rotating shaft is perpendicular to the side plate; the second rotating rod is used for driving the first rotating rod to rotate synchronously; the locking rod is vertically connected to the second rotating rod; the cabinet door is hinged to the cabinet body; the locking piece is connected with the cabinet door; the locking sheet is provided with a locking groove; the second rotating rod can rotate to the locking rod to be matched and embedded into the locking groove, so that the locking cabinet door is fixed.
2. The five-prevention interlocking structure of the centrally installed switchgear according to claim 1, further comprising a supporting box connected to the side panel; the support box comprises a first box plate and a second box plate; the first box plate is vertically connected to the side plate; a gap space is formed between the supporting box and the cabinet door; when the cabinet door is closed, the locking piece is matched and embedded into the gap space; the first rotating rod is rotatably arranged on the first box plate in a penetrating mode; the second rotating rod penetrates through the second box plate; a rotating handle is arranged at one end of the second rotating rod, which extends out of the second box plate; the cabinet door is provided with a circular opening; when the cabinet door is closed, the rotating handle is positioned in the round opening.
3. The five-prevention interlocking structure of the centrally installed switchgear according to claim 2, wherein an inner cylinder groove is formed in one end, away from the second bevel gear, of the first rotating rod; the cross section of the inner cylinder groove is rectangular; one end of the second rotating rod, which is far away from the rotating handle, is connected with a connecting rod; the cross section of the connecting rod is rectangular, and the connecting rod is matched with the inner barrel groove in a sliding embedded mode.
4. The five-prevention interlocking structure of the centrally installed switchgear according to claim 3, wherein the second rotating rod axially slides through the second box plate, so that the second rotating rod can axially slide relative to the first rotating rod; the locking groove comprises a vertical groove extending vertically and a transverse groove extending horizontally, and the opening of the vertical groove faces upwards; the transverse groove is communicated with one side, far away from the cabinet door, of the bottom of the vertical groove.
5. The five-prevention interlocking structure of the centrally installed switchgear cabinet according to claim 4, further comprising interlocking springs, an annular plate and a contact plate; the contact plate is vertically sleeved on the second rotating rod; the interlocking spring is sleeved on the second rotating rod; one end of the interlocking spring is connected to one side wall of the second box plate facing the first box plate; the other end of the interlocking spring is connected to the annular plate; the interlocking spring is in a compressed state so that the annular plate abuts against the contact plate.
6. The five-prevention interlocking structure of the centrally installed switchgear according to claim 5, further comprising a rotating arm, a first limiting component, a trigger lever and a first contact switch; the rotating arm is vertically connected to one end, close to the side plate, of the grounding rotating shaft; the first limiting assembly is arranged on the side plate; the trigger rod is vertically connected to one side of the contact plate close to the second box plate; the first contact switch is arranged on one side wall of the second box plate facing the first box plate; when the locking rod is positioned in the vertical groove, the trigger rod is contacted with the first contact switch to trigger the first contact switch; when the first contact switch is triggered, the first limiting assembly is located in a first state; when the first contact switch is not triggered, the first limiting assembly is located in a second state; when the first limiting assembly is in a first state, the first limiting assembly does not limit the rotation of the rotating arm; when the first limiting assembly is located in the second state, the first limiting assembly limits the rotation of the rotating arm.
7. The five-prevention interlocking structure of the centrally installed switchgear according to claim 6, wherein the first limiting assembly comprises a first connecting frame, a first stop lever, a first baffle, a first spring and a first electromagnet; the first connecting frame comprises a first connecting arm and a first vertical arm; the first vertical arm is connected to one side, far away from the side plate, of the first connecting arm; the first stop lever is slidably arranged through the first vertical arm; the first baffle is vertically connected to the first stop lever; the first spring is sleeved on the first stop lever; one end of the first spring is connected to one side, facing the side plate, of the first vertical arm, and the other end of the first spring is connected to the first baffle; the first spring is in a compressed state, so that the first stop lever abuts against the side plate; the first electromagnet is arranged on one side, facing the side plate, of the first vertical arm; the first electromagnet is used for attracting the first baffle; the first contact switch is used for controlling the starting and stopping of the first electromagnet.
8. The five-prevention interlocking structure of the centrally installed switchgear according to claim 6, further comprising a second contact switch and a second limit component; the second contact switch is arranged on the supporting box; when the cabinet door is closed, the locking piece is abutted with the second contact switch to trigger the second contact switch; when the second contact switch is triggered, the second limiting assembly is located in a third state; when the second contact switch is not triggered, the second limiting assembly is located in a fourth state; when the second limiting assembly is in a third state, the second limiting assembly does not limit the rotation of the rotating arm; when the second limiting assembly is located in the fourth state, the second limiting assembly limits the rotation of the rotating arm.
9. The five-prevention interlocking structure of the centrally installed switchgear according to claim 8, wherein the second limiting component and the first limiting component are identical in structure.
10. The five-prevention interlocking structure of the centrally installed switchgear according to claim 1, further comprising a supporting column and a bearing seat; one end of the supporting column is connected to the side plate; the bearing seat is connected to one end, far away from the side plate, of the supporting column; the first rotating rod is rotatably arranged in the bearing seat in a penetrating mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210620631.8A CN114976979A (en) | 2022-06-02 | 2022-06-02 | Five-prevention interlocking structure of centrally installed switchgear |
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| CN202210620631.8A CN114976979A (en) | 2022-06-02 | 2022-06-02 | Five-prevention interlocking structure of centrally installed switchgear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115693484A (en) * | 2022-10-31 | 2023-02-03 | 湖南开关有限责任公司 | Intelligent control method and artificial intelligence platform of switch cabinet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115693484A (en) * | 2022-10-31 | 2023-02-03 | 湖南开关有限责任公司 | Intelligent control method and artificial intelligence platform of switch cabinet |
| CN115693484B (en) * | 2022-10-31 | 2023-05-09 | 湖南开关有限责任公司 | Intelligent control method of switch cabinet and artificial intelligent platform |
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