CN108257804B - Ring main unit interlocking device - Google Patents
Ring main unit interlocking device Download PDFInfo
- Publication number
- CN108257804B CN108257804B CN201810200826.0A CN201810200826A CN108257804B CN 108257804 B CN108257804 B CN 108257804B CN 201810200826 A CN201810200826 A CN 201810200826A CN 108257804 B CN108257804 B CN 108257804B
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- grounding
- baffle
- door
- chamber
- rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention discloses a novel ring main unit interlocking device, which comprises a ring main unit body and an interlocking device, wherein the ring main unit body comprises a mechanism chamber, a main unit grounding chamber and a cable chamber, the mechanism chamber is provided with a grounding operation port and an isolating switch operation port, the main unit grounding chamber is provided with a first hanging door, and the cable chamber is provided with a second hanging door; the first hanging door is fixed with a first baffle, and the second hanging door is fixed with a second baffle; the interlocking device comprises a grounding hole baffle plate, an indication label, a driving assembly, a first pressing rod and a second pressing rod; the grounding hole baffle is used for shielding the grounding operation port; the indication label is used for shielding the grounding operation port or shielding the isolating switch operation port; the driving component is used for being matched with the first pressing rod and the second pressing rod so as to enable the first pressing rod to be in press fit with or separated from the first baffle plate and enable the second pressing rod to be in press fit with or separated from the second baffle plate; the invention can effectively prevent misoperation, avoid electric shock accidents in the overhaul process and protect the safety of overhaul personnel and switch equipment.
Description
Technical Field
The invention belongs to the technical field of looped network power supply equipment, and particularly relates to a looped network cabinet interlocking device.
Background
With the improvement of urban industry and urban life electricity quality, a ring network power supply mode is mainly adopted in a power supply network form, and the power supply quality is stable and reliable in the ring network power supply mode, so that the risk of large-area power failure is reduced, and the huge economic loss caused by accident power failure is avoided; the looped network switch cabinet is one of main equipment for looped network power supply, and the safety of the operation process is particularly important; the existing ring main unit is frequently subjected to misoperation, electrical misoperation accidents occur, electric shock accidents occur in the overhauling process, the safety of switch equipment is low, and the safety guarantee of overhauling personnel is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the ring main unit interlocking device which is provided with the interlocking mechanism, can effectively prevent misoperation and has high safety of the switch equipment.
In order to achieve the above object, the present invention adopts the following solutions: the utility model provides a looped netowrk cabinet interlocking device, includes looped netowrk cabinet body and interlocking device, the looped netowrk cabinet body includes mechanism room, cabinet body grounding room and cable chamber, the mechanism room is provided with ground connection operation mouth and isolator operation mouth, cabinet body grounding room installs first string door, the second string door is installed to the cable chamber.
The first hanging door is fixed with a first baffle, and the second hanging door is fixed with a second baffle; the interlocking device comprises a grounding hole baffle plate, an indication label, a driving assembly, a first pressing rod and a second pressing rod; the grounding hole baffle is used for shielding the grounding operation port; the indication sign is used for shielding the grounding operation port or shielding the isolating switch operation port; the driving component is used for being matched with the first pressing rod and the second pressing rod so as to enable the first pressing rod to be in press connection or separation with the first baffle plate and enable the second pressing rod to be in press connection or separation with the second baffle plate.
Further, the driving component is arranged in the mechanism chamber; the driving assembly comprises a rotating shaft and a cam part, the upper end of the cam part is fixedly connected with the lower end of the indication sign, and the rotating shaft is connected to the joint of the cam part and the indication sign;
the rotating shaft is used for driving the cam part and the indication sign to rotate so as to enable the upper end of the indication sign to shield the grounding operation opening or shield the isolating switch operation opening; the lower end of the cam is driven by the rotating shaft to be matched with the first pressing rod and the second pressing rod.
Further, a first through hole is formed in the top wall of the cabinet body grounding chamber, the first pressure rod movably penetrates through the first through hole, a first pressure rod baffle is fixedly connected to the upper end of the first pressure rod, and the lower end of the first pressure rod is used for being in pressure connection with the first baffle;
the mechanism chamber is provided with a support rod part, the first pressure bar baffle is provided with a waist-shaped hole, and the support rod part is arranged in the waist-shaped hole;
the upper end of the first compression bar is sleeved with a first spring part, the upper end of the first spring part is fixedly connected with the first compression bar, the lower end of the first spring part is fixedly connected with the outer surface of the top wall of the grounding chamber of the cabinet body, and the lower end of the cam part is used for being in compression joint with the upper end of the first compression bar baffle so that the first compression bar baffle moves up and down along the length direction of the waist-shaped hole.
Further, the first pressure bar baffle is set to the Z shape, first pressure bar baffle is including fixed connection's first tip, connecting portion and second tip in proper order, the waist hole set up in connecting portion, first tip be used for with cam lower extreme crimping, the second tip with first pressure bar upper end fixed connection.
Further, the first hanging door is fixed with a grounding chamber door limiting plate, a second through hole is formed in the top wall of the cable chamber, and the second compression bar movably penetrates through the second through hole; the upper end of the second compression bar is sleeved with a second spring part, the upper end of the second spring part is fixedly connected with the second compression bar, and the lower end of the second spring part is fixedly connected with the outer surface of the top wall of the cable chamber; the grounding chamber door limiting plate is used for being in pressure connection with the upper end of the second pressing rod, and the lower end of the second pressing rod is used for being in pressure connection with the second baffle plate.
Further, a second pressure bar baffle plate used for being in pressure connection with the grounding chamber door limiting plate is fixed at the upper end of the second pressure bar.
Further, the grounding chamber door limiting plate is connected with the first hanging door in a welding mode.
Further, a third through hole is formed in the top wall of the grounding chamber of the cabinet body, the upper end of the grounding hole baffle is used for shielding the grounding operation port, and the lower end of the grounding hole baffle is fixedly connected with a door linkage pull rod;
the door linkage pull rod is movably arranged in the third through hole in a penetrating mode, a third spring part is sleeved at the upper end of the door linkage pull rod, the upper end of the third spring part is fixedly connected with the door linkage pull rod, and the lower end of the third spring part is fixedly connected with the outer surface of the top wall of the grounding chamber of the cabinet body;
the door interlock pull rod lower extreme fixedly connected with door interlock pull rod baffle, first baffle is provided with first spacing groove, door interlock pull rod lower extreme is used for passing first spacing groove so that the door interlock pull rod baffle is arranged in the below of first baffle.
Further, the first baffle is connected with the first hanging door in a welding mode.
Further, the second baffle is connected with the second hanging door in a welding mode.
The ring main unit interlocking device has the beneficial effects that when the isolating switch is switched on, the indication label blocks the grounding operation port, so that the grounding unit cannot be grounded, and the first pressure bar and the second pressure bar respectively prop against the first hanging door and the second hanging door, so that the first hanging door and the second hanging door cannot be opened; when the grounding unit is switched on, the indication sign blocks the operation port of the isolating switch, so that the isolating switch cannot be switched on, at the moment, the first pressure bar does not prop against the first hanging door any more, so that the first hanging door can be opened, and after the grounding chamber is opened, the second pressure bar does not prop against the second hanging door any more, so that the first hanging door can be opened; the cable chamber is opened, and the grounding hole baffle blocks the grounding operation port, so that the cable chamber cannot operate the grounding opening operation; the ring main unit interlocking device has the advantages of not only locking function, but also simple structure, convenient operation, effective prevention of electrical misoperation accidents, electric shock accidents in the maintenance process, protection of the safety of maintenance personnel and switch equipment, simplification of process flow, simple and convenient installation, high reliability, satisfaction of technical requirements and improvement of the competitiveness of the domestic ring main unit market.
Drawings
Fig. 1 is a schematic structural view of a first view angle of the present invention.
Fig. 2 is a schematic structural diagram of a second view angle of the present invention.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is a schematic view of the structure of the indoor part of the interlocking device mechanism of the present invention.
In the accompanying drawings:
11. a ground operation port; 12. isolating switch operation port; 13. a support rod portion; 21. a first hanging door; 22. a first baffle; 22a, a first limit groove; 23. a grounded chamber door opening plate; 31. a second hanging door; 32. a second baffle; 41. a ground hole baffle; 51. indication sign; 61a, a rotating shaft; 61b, a cam portion; 71. a first compression bar; 72. a second compression bar; 73. a first plunger baffle; 73a, a first end; 73b, a connection portion; 73c, a second end; 73b-1, waist-shaped holes; 74. a first spring portion; 75. a second spring portion; 76. a second plunger baffle; 77. a door tie rod; 78. a third spring portion; 79. door interlock pull rod baffle.
Detailed Description
The invention is further described below with reference to the accompanying drawings: for the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the invention provides a ring main unit interlocking device, which comprises a ring main unit body and an interlocking device, wherein the ring main unit body comprises a mechanism chamber, a main unit grounding chamber and a cable chamber, the mechanism chamber is provided with a grounding operation port 11 and a disconnecting switch operation port 12, the main unit grounding chamber is provided with a first hanging door 21, and the cable chamber is provided with a second hanging door 31.
The first hanging door 21 is fixed with a first baffle 22, and the second hanging door 31 is fixed with a second baffle 32; the interlocking device comprises a grounding hole baffle 41, an indication label 51, a driving assembly, a first pressing rod 71 and a second pressing rod 72; the grounding hole baffle 41 is used for shielding the grounding operation port 11; the indication label 51 is used for shielding the grounding operation port 11 or shielding the isolating switch operation port 12; the driving assembly is used for being matched with the first pressure lever 71 and the second pressure lever 72 so as to enable the first pressure lever 71 to be in pressure connection with or separated from the first baffle 22, and enable the second pressure lever 72 to be in pressure connection with or separated from the second baffle 32.
In this embodiment, the driving component is disposed in the mechanism chamber; the driving assembly comprises a rotating shaft 61a and a cam part 61b, wherein the upper end of the cam part 61b is fixedly connected with the lower end of the indication label 51, and the rotating shaft 61a is connected with the joint of the cam part 61b and the indication label 51;
the rotating shaft 61a is used for driving the cam portion 61b and the indication label 51 to rotate, so that the upper end of the indication label 51 shields the grounding operation opening 11 or the isolating switch operation opening 12; the lower end of the cam portion 61b is driven by the rotating shaft 61a to cooperate with the first compression bar 71 and the second compression bar 72.
In this embodiment, a first through hole is formed in the top wall of the grounding chamber of the cabinet body, the first compression bar 71 movably penetrates through the first through hole, a first compression bar baffle 73 is fixedly connected to the upper end of the first compression bar 71, and the lower end of the first compression bar 71 is used for being in pressure connection with the first baffle 22;
the mechanism chamber is provided with a support rod part 13, the first pressure bar baffle 73 is provided with a waist-shaped hole 73b-1, and the support rod part 13 is arranged in the waist-shaped hole 73 b-1;
the upper end of the first pressure bar 71 is sleeved with a first spring portion 74, the upper end of the first spring portion 74 is fixedly connected with the first pressure bar 71, the lower end of the first spring portion 74 is fixedly connected with the outer surface of the top wall of the grounding chamber of the cabinet body, and the lower end of the cam portion 61b is used for being in pressure connection with the upper end of the first pressure bar baffle 73 so that the first pressure bar baffle 73 moves up and down along the length direction of the waist-shaped hole 73 b-1.
In this embodiment, the first pressure bar baffle 73 is configured in a zigzag shape, the first pressure bar baffle 73 includes a first end 73a, a connecting portion 73b and a second end 73c that are sequentially and fixedly connected, the waist-shaped hole 73b-1 is disposed in the connecting portion 73b, the first end 73a is used for being in pressure connection with the lower end of the cam portion 61b, and the second end 73c is fixedly connected with the upper end of the first pressure bar 71.
In this embodiment, the first hanging door 21 is fixed with a grounding chamber door limiting plate 23, a second through hole is provided on the top wall of the cable chamber, and the second pressing rod 72 is movably inserted into the second through hole; the upper end of the second pressing rod 72 is sleeved with a second spring part 75, the upper end of the second spring part 75 is fixedly connected with the second pressing rod 72, and the lower end of the second spring part 75 is fixedly connected with the outer surface of the top wall of the cable chamber; the grounding chamber door opening plate 23 is used for being in press connection with the upper end of the second pressing rod 72, and the lower end of the second pressing rod 72 is used for being in press connection with the second baffle 32.
In this embodiment, a second pressing bar baffle 76 for pressing against the ground chamber door limiting plate 23 is fixed to the upper end of the second pressing bar 72.
In this embodiment, the grounding door limiting plate 23 is welded to the first hanging door 21.
In this embodiment, a third through hole is formed in the top wall of the grounding chamber of the cabinet body, the upper end of the grounding hole baffle 41 is used for shielding the grounding operation opening 11, and the lower end of the grounding hole baffle 41 is fixedly connected with a door tie rod 77;
the door linkage pull rod 77 movably penetrates through the third through hole, a third spring part 78 is sleeved at the upper end of the door linkage pull rod 77, the upper end of the third spring part 78 is fixedly connected with the door linkage pull rod 77, and the lower end of the third spring part 78 is fixedly connected with the outer surface of the top wall of the grounding chamber of the cabinet body;
the lower end of the door interlock pull rod 77 is fixedly connected with a door interlock pull rod baffle 79, the first baffle 22 is provided with a first limit groove 22a, and the lower end of the door interlock pull rod 77 is used for penetrating through the first limit groove 22a so that the door interlock pull rod baffle 79 is arranged below the first baffle 22.
In this embodiment, the first baffle 22 is welded to the first hanging door 21.
In this embodiment, the second baffle 32 is welded to the second hanging door 31.
Referring to fig. 1 to fig. 4, further details of different working states of the interlocking device in the embodiment of the present invention will be described, where the ring main unit uses a three-position switch, when the grounding unit and the isolating switch are both in an off state, the cam portion 61b and the indication tag 51 are driven by the rotating shaft 61a to rotate to a vertical state, the indication tag 51 is located between the grounding operation opening 11 and the isolating switch operation opening 12, the cam portion 61b abuts against the first end 73a of the first pressing rod baffle 73, the first pressing rod baffle 73 presses the first pressing rod 71 and the first spring portion 74 to make the first spring portion 74 in a compressed state, at this time, the lower end of the first pressing rod 71 abuts against the first baffle 22, and when the cabinet body grounding chamber door, i.e. the first hanging door 21 is opened, the first hanging door 21 needs to be moved upward and then opened, and since the first baffle 22 welded on the first hanging door 21 is pressed and abutted by the first pressing rod 71, the first hanging door 21 cannot be moved upward and opened; when the cabinet body grounding chamber is in a closed state, the grounding chamber door limiting plate 23 welded on the first hanging door 21 acts on a pressure on the second pressing rod 72 and the second spring part 75, the second spring part 75 is in a compressed state, the lower end of the second pressing rod 72 abuts against the second baffle plate 32, the cable chamber door, namely the second hanging door 31, is hung on the cable chamber, the second hanging door 31 needs to be moved upwards and then opened when being opened, and the second baffle plate 32 welded on the second hanging door 31 cannot be moved upwards and cannot be opened because the second baffle plate 32 is pressed and abutted by the second pressing rod 72; the three-station switch is in a brake-separating state, the interlocking pressing cabinet body grounding chamber door cannot be opened, the cable chamber door is interlocked with the cabinet body grounding chamber door, and the cable chamber door cannot be opened, so that the situation that a user mistakenly enters the electrified compartment is avoided.
When the ring main unit is in the disconnecting state of the disconnecting switch, the cam part 61b and the indication label 51 rotate under the drive of the rotating shaft 61a to the upper end of the indication label 51 to block the grounding operation port 11, so that the grounding unit cannot be operated to be grounded; at this time, the cam portion 61b abuts against the first end portion 73a of the first pressing bar baffle 73, and the first pressing bar baffle 73 applies a pressure to the first pressing bar 71 and the first spring portion 74, so that the first spring portion 74 is in a compressed state, at this time, the lower end of the first pressing bar 71 abuts against the first baffle 22, and the cabinet grounding chamber door, i.e., the first hanging door 21, cannot be opened; when the cabinet grounding chamber is in a closed state, the grounding chamber door limiting plate 23 welded on the first hanging door 21 acts on the second pressing rod 72 and the second spring part 75 to enable the second spring part 75 to be in a compressed state, the lower end of the second pressing rod 72 abuts against the second baffle 32, and the cable chamber door, namely the second hanging door 31, cannot be opened; the three-station switch is in a closing state, the interlocking pressing cabinet body grounding chamber door cannot be opened, the cable chamber door is interlocked with the cabinet body grounding chamber door, and the cable chamber door cannot be opened, so that the situation that a user mistakenly enters the electrified compartment is avoided.
When the ring main unit is in a state that the grounding unit is switched on and the isolating switch is switched off, the cam part 61b and the indicating label 51 are driven by the rotating shaft 61a to rotate to the upper end of the indicating label 51 to block the isolating switch operation port 12, so that the isolating switch cannot be switched on by operation, the cam part 61b does not exert pressure on the first pressure lever baffle 73, the first pressure lever baffle 73 does not exert pressure on the first pressure lever 71 and the first spring part 74, the first spring part 74 is restored to a free state from a compressed state, the upper end of the first pressure lever 71 is fixedly connected with the first spring part 74, the first pressure lever 71 is driven by the first spring part 74 to move upwards, the lower end of the first pressure lever 71 does not abut against the first baffle 22, and the grounding chamber door of the cabinet body, namely the first hanging door 21, can be opened; when the first hanging door 21 is opened, the lower end of the door linkage pull rod 77 is separated from the first limiting groove 22a, the first baffle 22 can not apply a pulling force to the door linkage pull rod 77 by pressing the door linkage pull rod baffle 79 any more, the third spring part 78 gradually resets to a free state from a compressed state, the third spring part 78 drives the door linkage pull rod 77 to move upwards as a whole, the door linkage pull rod 77 pushes the grounding hole baffle 41 to move upwards, and the grounding hole baffle 41 shields the grounding operation opening 11, so that the grounding unit which is switched on can not be opened by operation; after the cabinet body grounding chamber door is opened, the grounding chamber door limiting plate 23 welded on the first hanging door 21 no longer applies pressure to the second pressing rod 72 and the second spring part 75, the second spring part 75 is restored to the free state from the compressed state, the upper end of the second pressing rod 72 is fixedly connected with the second spring part 75, the second pressing rod 72 is driven by the second spring part 75 to move upwards,
the lower end of the second pressing rod 72 is not abutted against the second baffle 32 any more, and the cable compartment door, namely the second hanging door 31, can be opened. The three-station switch is in a grounding state, the interlocking device is unlocked, the cabinet body grounding chamber door can be opened, after the cabinet body grounding chamber door is opened, the cable chamber door and the cabinet body grounding chamber door are interlocked and unlocked, the cable chamber door can be opened, and an maintainer can enter the cable chamber to carry out maintenance or overhaul work; after the cable chamber door is hung and closed, the cabinet body grounding chamber door can be hung, then grounding opening can be carried out, after grounding opening, the cabinet body grounding chamber door and the cable chamber door can not be opened, and therefore closing power transmission of the three-station switch can be carried out.
The ring main unit interlocking device has the advantages of not only locking function, but also simple structure, convenient operation, effective prevention of electrical misoperation accidents, electric shock accidents in the maintenance process, protection of the safety of maintenance personnel and switch equipment, simplification of process flow, simple and convenient installation, high reliability, satisfaction of technical requirements and improvement of the competitiveness of the domestic ring main unit market.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A ring main unit interlocking device is characterized in that: the ring main unit comprises a ring main unit body and a linkage device, wherein the ring main unit body comprises a mechanism chamber, a cabinet body grounding chamber and a cable chamber, the mechanism chamber is provided with a grounding operation port (11) and a disconnecting switch operation port (12), the cabinet body grounding chamber is provided with a first hanging door (21), and the cable chamber is provided with a second hanging door (31);
the first hanging door (21) is fixed with a first baffle (22), and the second hanging door (31) is fixed with a second baffle (32); the interlocking device comprises a grounding hole baffle plate (41), an indication label (51), a driving assembly, a first pressing rod (71) and a second pressing rod (72); the grounding hole baffle plate (41) is used for shielding the grounding operation port (11); the indication label (51) is used for shielding the grounding operation port (11) or shielding the isolating switch operation port (12); the driving assembly is used for being matched with the first pressure rod (71) and the second pressure rod (72) so as to enable the first pressure rod (71) to be in pressure connection with or separated from the first baffle plate (22) and enable the second pressure rod (72) to be in pressure connection with or separated from the second baffle plate (32);
the driving component is arranged in the mechanism chamber; the driving assembly comprises a rotating shaft (61 a) and a cam part (61 b), the upper end of the cam part (61 b) is fixedly connected with the lower end of the indication sign (51), and the rotating shaft (61 a) is connected to the joint of the cam part (61 b) and the indication sign (51);
the rotating shaft (61 a) is used for driving the cam part (61 b) and the indication label (51) to rotate so as to enable the upper end of the indication label (51) to shield the grounding operation opening (11) or shield the isolating switch operation opening (12); the lower end of the cam part (61 b) is driven by the rotating shaft (61 a) to be matched with the first pressure rod (71) and the second pressure rod (72);
the first baffle (22) is welded with the first hanging door (21);
the second baffle (32) is welded with the second hanging door (31).
2. The ring main unit interlocking device according to claim 1, wherein: the top wall of the cabinet body grounding chamber is provided with a first through hole, the first pressure rod (71) movably penetrates through the first through hole, the upper end of the first pressure rod (71) is fixedly connected with a first pressure rod baffle (73), and the lower end of the first pressure rod (71) is used for being in pressure connection with the first baffle (22);
the mechanism chamber is provided with a support rod part (13), the first pressure rod baffle (73) is provided with a waist-shaped hole (73 b-1), and the support rod part (13) is arranged in the waist-shaped hole (73 b-1); the upper end of the first pressing rod (71) is sleeved with a first spring part (74), the upper end of the first spring part (74) is fixedly connected with the first pressing rod (71), the lower end of the first spring part (74) is fixedly connected with the outer surface of the top wall of the grounding chamber of the cabinet body, and the lower end of the cam part (61 b) is used for being pressed with the upper end of the first pressing rod baffle (73) so that the first pressing rod baffle (73) moves up and down along the length direction of the waist-shaped hole (73 b-1).
3. The ring main unit interlocking device according to claim 2, wherein: the first pressure bar baffle (73) is arranged to be Z-shaped, the first pressure bar baffle (73) comprises a first end (73 a), a connecting portion (73 b) and a second end (73 c) which are sequentially and fixedly connected, the waist-shaped hole (73 b-1) is formed in the connecting portion (73 b), the first end (73 a) is used for being in press connection with the lower end of the cam portion (61 b), and the second end (73 c) is fixedly connected with the upper end of the first pressure bar (71).
4. A ring main unit interlocking device according to claim 3 and wherein: the first hanging door (21) is fixedly provided with a grounding chamber door limiting plate (23), a second through hole is formed in the top wall of the cable chamber, and the second pressing rod (72) is movably arranged in the second through hole in a penetrating mode; the upper end of the second pressing rod (72) is sleeved with a second spring part (75), the upper end of the second spring part (75) is fixedly connected with the second pressing rod (72), and the lower end of the second spring part (75) is fixedly connected with the outer surface of the top wall of the cable chamber; the grounding chamber door limiting plate (23) is used for being in pressure connection with the upper end of the second pressing rod (72), and the lower end of the second pressing rod (72) is used for being in pressure connection with the second baffle plate (32).
5. The ring main unit interlocking device according to claim 4, wherein: a second pressure bar baffle (76) used for being pressed against the grounding chamber door limiting plate (23) is fixed at the upper end of the second pressure bar (72).
6. The ring main unit interlocking device according to claim 4, wherein: the grounding chamber door opening plate (23) is connected with the first hanging door (21) in a welding mode.
7. The ring main unit interlocking device according to claim 4, wherein: the top wall of the grounding chamber of the cabinet body is provided with a third through hole, the upper end of the grounding hole baffle plate (41) is used for shielding the grounding operation opening (11), and the lower end of the grounding hole baffle plate (41) is fixedly connected with a door linkage pull rod (77);
the door linkage pull rod (77) is movably arranged in the third through hole in a penetrating mode, a third spring part (78) is sleeved at the upper end of the door linkage pull rod (77), the upper end of the third spring part (78) is fixedly connected with the door linkage pull rod (77), and the lower end of the third spring part (78) is fixedly connected with the outer surface of the top wall of the grounding chamber of the cabinet body;
the door interlock pull rod (77) lower extreme fixedly connected with door interlock pull rod baffle (79), first baffle (22) are provided with first spacing groove (22 a), door interlock pull rod (77) lower extreme is used for passing first spacing groove (22 a) so that door interlock pull rod baffle (79) are arranged in the below of first baffle (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200826.0A CN108257804B (en) | 2018-03-12 | 2018-03-12 | Ring main unit interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200826.0A CN108257804B (en) | 2018-03-12 | 2018-03-12 | Ring main unit interlocking device |
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| CN108257804A CN108257804A (en) | 2018-07-06 |
| CN108257804B true CN108257804B (en) | 2023-07-14 |
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| CN201810200826.0A Active CN108257804B (en) | 2018-03-12 | 2018-03-12 | Ring main unit interlocking device |
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|---|---|---|---|---|
| CN109884352B (en) * | 2019-03-14 | 2021-03-02 | 贵州大学 | Safety tester with safety prompt structure for electronic processing inspection |
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