CN102881486B - Interlocking mechanism of medium pressure switchgear - Google Patents

Interlocking mechanism of medium pressure switchgear Download PDF

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Publication number
CN102881486B
CN102881486B CN201210396204.2A CN201210396204A CN102881486B CN 102881486 B CN102881486 B CN 102881486B CN 201210396204 A CN201210396204 A CN 201210396204A CN 102881486 B CN102881486 B CN 102881486B
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China
Prior art keywords
push rod
interlocking
depression bar
spring
holder
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Application number
CN201210396204.2A
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Chinese (zh)
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CN102881486A (en
Inventor
王国军
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BOER (WUXI) POWER SYSTEM Co Ltd
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BOER (WUXI) POWER SYSTEM Co Ltd
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Priority to CN201210396204.2A priority Critical patent/CN102881486B/en
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Abstract

The invention relates to an interlocking mechanism of a medium pressure switchgear. A ground knife interlocking fan-shaped sheet is fixedly arranged on a ground knife shaft; a compression bar fixing base, a push rod fixing base and a fan-shaped sheet fixing base are fixedly arranged on a cabinet body; a compression bar is glidingly arranged in the compression bar fixing base; the ground knife interlocking fan-shaped sheet is contacted with the top end part of the compression bar; a spring baffle pin is fixedly arranged on the compression bar; a first spring is sleeved on the compression bar between the spring baffle pin and a bottom panel of the compression bar fixing base; a push rod is glidingly arranged in the push rod fixing base; a spring baffle pin is fixedly arranged on the push rod; a second spring is sleeved on the push rod between the spring baffle pin and the right side wall of the cabinet body; an interlocking cylindrical pin is fixedly arranged on the right end part of the push rod; an interlocking fan-shaped sheet is hinged to the fan-shaped sheet fixing base; a lower door lock tongue and a welding nut are arranged on the lower door; a slotted hole is formed in the lower door lock tongue; and a stop bolt is arranged in the welding nut. The interlocking mechanism is applied to a set of switchgear equipment of an electric apparatus, can prevent a worker from electrically and mistakenly opening the lower door of the switchgear, and has the advantages of simple structure, convenience in mounting, low cost and reliable work.

Description

Medium Voltage Switchgear interlocking device
Technical field
The invention belongs to electrical equipment complete switch technical equipment field, the present invention especially relates to a kind of Medium Voltage Switchgear interlocking device.
Background technology
In electrical assemblies switchgear equipment, in order to ensure the reliability service of metal enclosed switchgear and operator's personal safety, according to national regulation, must meet five anti-requirements:
1, prevent from dividing by mistake and closing by mistake circuit breaker;
2, prevent on-load deciliter insulating contact;
3, prevent band electrical ground;
4, prevent ground connection power transmission;
5, prevent mistakenly entering charged chamber.
In order to have realized the 5th in five anti-requirements, prevent mistakenly entering charged chamber.The interlocking of earthed switch and Xiamen is generally realized by the mode of electronics or machinery, and traditional situation about realizing in electronics mode is to use electromagnet.Because service time of switch cubicle is generally more than 10 years, the easy ageing failure of electromagnet coil, and also electronic product failure rate is high.Make the former disabler that prevents mistakenly entering charged chamber that should possess of equipment.It is not that installation volume is larger that conventional mechanical system realizes interlocking, is exactly complicated structure.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide that a kind of linkage is good, simple in structure, machinery flexibly, the Medium Voltage Switchgear interlocking device of reliable in function.
According to technical scheme provided by the invention, described Medium Voltage Switchgear interlocking device is fixed with ground cutter interlocking fan matrix on ground cutter shaft, on cabinet, be fixed with depression bar holder, push rod holder and fan matrix holder, in depression bar holder, be slidably fitted with depression bar, ground cutter interlocking fan matrix contacts with the top ends of depression bar, on depression bar, be fixed with spring backing pin, on the depression bar between spring backing pin and the bottom panel of depression bar holder, be socketed with the first spring, in push rod holder, be slidably fitted with push rod, on push rod, be fixed with spring backing pin, on the push rod between spring backing pin and the right side wall of cabinet, be socketed with the second spring, in the right part of push rod, be fixed with interlocking straight pin, on fan matrix holder, be hinged with interlocking fan matrix, interlocking fan one end of matrix and the bottom of depression bar contact, the interlocking fan other end of matrix and the left part of push rod contact, lower door bolt and welded nut are installed on Xiamen, on lower door bolt, offer slotted eye, an only screw is installed in welded nut.
In the bottom of depression bar, offer depression bar groove, one end of interlocking fan matrix embeds in depression bar groove.
In the left part of push rod, offer push rod groove, the other end of interlocking fan matrix embeds in push rod groove.
The present invention is applicable to electrical assemblies switchgear equipment, the charged switch cubicle Xiamen that opens by mistake of the personnel that can prevent; And the present invention has advantages of simple in structure, easy for installation, with low cost, reliable operation.
Accompanying drawing explanation
Fig. 1 generalized section during in gate-dividing state that is the present invention at ground cutter shaft.
Fig. 2 be the present invention ground cutter shaft during in gate-dividing state interlocking device's interlocking straight pin block the schematic diagram of dead bolt.
Fig. 3 one of generalized section during in "on" position that is the present invention at ground cutter shaft.
Two of Fig. 4 generalized section during in "on" position that is the present invention at ground cutter shaft.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
As shown in the figure, this Medium Voltage Switchgear interlocking device is fixed with ground cutter interlocking fan matrix 14 on ground cutter shaft 15, on cabinet 13, be fixed with depression bar holder 1, push rod holder 7 and fan matrix holder 9, in depression bar holder 1, be slidably fitted with depression bar 3, ground cutter interlocking fan matrix 14 contacts with the top ends of depression bar 3, on depression bar 3, be fixed with spring backing pin 2, on the depression bar 3 between spring backing pin 2 and the bottom panel of depression bar holder 1, be socketed with the first spring 4, in push rod holder 7, be slidably fitted with push rod 6, on push rod 6, be fixed with spring backing pin 2, on the push rod 6 between spring backing pin 2 and the right side wall of cabinet 13, be socketed with the second spring 40, in the right part of push rod 6, be fixed with interlocking straight pin 8, on fan matrix holder 9, be hinged with interlocking fan matrix 5, one end of interlocking fan matrix 5 contacts with the bottom of depression bar 3, the other end of interlocking fan matrix 5 contacts with the left part of push rod 6, lower door bolt 11 and welded nut 10 are installed on Xiamen 12, on lower door bolt 11, offer slotted eye, an only screw 16 is installed in welded nut 10.
In the bottom of depression bar 3, offer depression bar groove 30, one end of interlocking fan matrix 5 embeds in depression bar groove 30.
In the left part of push rod 6, offer push rod groove 60, the other end of interlocking fan matrix 5 embeds in push rod groove 60.
The present invention includes depression bar holder 1, depression bar 3, the first spring 4, interlocking fan matrix 5, push rod 6, push rod holder 7, fan matrix holder 9, lower door bolt 11, welded nut 10, stop a screw 16, emergency release label.Ground cutter interlocking fan matrix 14 is fixedly mounted on ground cutter shaft 15, and depression bar holder 1, umbellate form sheet holder 9 and push rod holder 7 are fixedly mounted on cabinet 13, and depression bar 3, the first spring 4 are arranged on depression bar holder 1; Interlocking fan matrix 5 is arranged on umbellate form sheet holder 9, and pine is joined; Push rod 6 and spring 4 are arranged on push rod holder 7; Interlocking straight pin 8 is arranged on push rod 6, and lower door bolt 11 is arranged on Xiamen 12, and welded nut 10 is welded on Xiamen, and only a screw 16 is arranged in welded nut.With an emergency release label paper, be affixed on Xiamen 12, cover an only screw 16.Can't see in the ordinary course of things emergency release hole, only, just seeing the only screw 16 in emergency release hole when tearing label, can carry out emergency release operation.
Ground cutter shaft 15 in operating personnel's land used cutter operating grip operation indoor metal armouring withdraw type switch cabinet, make it to turn to open position, hexagonal ground cutter shaft 15 drives ground cutter interlocking fan matrix 14 to rotate, make the long distance end of ground cutter interlocking fan matrix down, interlocking fan matrix 14 is by depression bar 3 toward pressing down, and the first spring 4 on depression bar 3 is subject to force compresses, depression bar 35 one the downward thrusts of umbellate form sheet of interlocking, the axle center of interlocking fan matrix 5 is fixed, and rotate in its axle center of can only having mercy on.Certain angle is rotated in interlocking fan matrix 5 its axle center of having mercy on, and the power of the turning handle vertical direction of interlocking fan matrix 5 is converted into the power of horizontal direction, and interlocking fan matrix 5 presses push rod 6, makes push rod 6 toward horizontal direction displacement.Depression bar 3 and push rod 6 is concavity structure with interlocking fan matrix 5 contact positions, can prevent interlocking fan matrix 5 position of slipping away.Spring 4 on push rod 6 gives the elastic force that push rod 6 is contrary with push rod 6 directions of motion, the certain distance that push rod 6 moves horizontally, the second spring 40 on compression push rod 6.Interlocking straight pin 8 is screwed on push rod 6 by screw thread.Push rod 6 drives interlocking straight pin 8 to do together the motion of horizontal direction.Interlocking straight pin 8 is all the time in the front mother rib lateral rotundum of cabinet right side wall 13, concentric with circular hole, does not depart from cabinet right side wall 13.As depart from right side wall and easily cause mechanism blockage.Now, as the Xiamen of indoor metal armouring withdraw type switch cabinet is in the lower time of state of closing, interlocking straight pin 8 will snap in the slotted eye of lower door bolt 11.The movement of the lower door bolt 11 of restriction, because lower door bolt 11 cannot move, therefore cannot make lower door bolt 11 depart from snap close 17.The Xiamen of indoor metal armouring withdraw type switch cabinet cannot be opened.
When the ground cutter shaft 15 that rotates indoor metal armouring withdraw type switch cabinet is to closing position, ground cutter shaft 15 drives ground cutter interlocking fan matrix 14 low coverage ends down, and depression bar 3 relies on up bullet of cover the first spring 4 thereon, terminates in ground cutter interlocking fan matrix 14 low coverage ends; Simultaneously push rod 6 relies on the second spring 40 on it bullet backward, retreats together with push rod 6 and interlocking straight pin 8, promotes interlocking fan matrix 5 and turns an angle, and being still in interlocking and fanning matrix 5 left side contact points and encounter depression bar 3.Interlocking straight pin 8 departs from the catching groove of lower door bolt 11.Now, lower door bolt 11 can normally move, and door lock can be opened.When emergency or interlock lockedly cannot open Xiamen time, tear the emergency release label being attached on Xiamen 12, expose the only screw 16 being spun on welded nut 10, with corresponding instrument, turn clockwise counterclockwise, will stop a screw 16 and exit.Now on door-plate, can expose the screw on welded nut 10, the one end that can expose the straight pin 8 of interlocking in screw, the straight pin 8 of now interlocking is as seen stuck in lower door bolt 11 slotted eyes, the available instrument corresponding with interlocking straight pin 8 head grooves is rotated counterclockwise or turns clockwise and turn interlocking straight pin 8, straight pin 8 pinch ins make to interlock, when interlocking straight pin 8 departs from the slotted eye on lower door bolt 11, exit rotation instrument used.Now can normally open Xiamen 12.Realized the emergency opening of Xiamen 12.The straight pin 8 of interlocking after 12 unlatchings of Xiamen screws out 6 ~ 8 millimeters, can realize the reset of interlock.
The present invention utilizes the rotation of the ground cutter shaft 15 of operational grounding switch, drive the ground cutter interlocking fan matrix 14 on ground cutter shaft 15 to rotate, ground cutter interlocking fan matrix 14 is in long distance end, ground cutter interlocking fan matrix 14 gives depression bar 3 pressure of vertical direction in interlocking device, depression bar 3 is moved down, the interlocking fan matrix 5 of rotating around axle center by an energy is converted into the power of vertical direction the power of horizontal direction, in other words the displacement of vertical direction is converted into the displacement of horizontal direction.The interlocking fan matrix 5 that can rotate around axle center passes to power or displacement the push rod 6 of horizontal direction.After push rod 6 displacements of horizontal direction, be stuck in open the door must be mobile dead bolt slotted eye in.Because must allow lower door bolt 11 move as opened Xiamen, depart from snap close.And it is locked now to descend door bolt 11 to give, cannot move, solidly showed the function that ground cutter shaft 15 cannot be opened in open position Xiamen.
Local cutter shaft 15 is when closing position, and the ground cutter interlocking fan matrix 14 on ground cutter shaft 15 turns to short distance end.The resilience force of upper the first spring 4 of mechanism up moves the depression bar 3 of vertical direction, the push rod 6 of horizontal direction is moved to the left, interlocking straight pin 8 on push rod 6 and push rod 6 departs from the slotted eye on lower door bolt 11, now descends door bolt 11 to move, and door-plate can be opened.And while needing emergency release, only need the total length of the interlocking straight pin 8 on push rod 6 and push rod 6 to dwindle, the slotted eye that the interlocking straight pin 8 on push rod 6 and push rod 6 is departed from lower door bolts 11 just can be realized emergency release function.

Claims (1)

1.Yi Zhong Medium Voltage Switchgear interlocking device is fixed with ground cutter interlocking fan matrix (14) on ground cutter shaft (15), push rod holder (7) and fan matrix holder (9), ground cutter interlocking fan matrix (14) contacts with the top ends of depression bar (3), in push rod holder (7), be slidably fitted with push rod (6), on push rod (6), be fixed with spring backing pin (2), on the push rod (6) between spring backing pin (2) and the right side wall of cabinet 13, be socketed with the second spring (40), on fan matrix holder (9), be hinged with interlocking fan matrix (5), one end of interlocking fan matrix (5) contacts with the bottom of depression bar (3), the other end of interlocking fan matrix (5) contacts with the left part of push rod (6), lower door bolt (11) and welded nut (10) are installed on Xiamen (12),
It is characterized in that: on cabinet (13), be fixed with depression bar holder (1), in depression bar holder (1), be slidably fitted with depression bar (3), on depression bar (3), be fixed with spring backing pin (2), on the depression bar (3) between spring backing pin (2) and the bottom panel of depression bar holder (1), be socketed with the first spring (4), in the right part of push rod (6), be fixed with interlocking straight pin (8), on lower door bolt (11), offer slotted eye, an only screw (16) is installed in welded nut (10);
In the bottom of depression bar (3), offer depression bar groove (30), one end of interlocking fan matrix (5) embeds in depression bar groove (30);
In the left part of push rod (6), offer push rod groove (60), the other end of interlocking fan matrix (5) embeds in push rod groove (60).
CN201210396204.2A 2012-10-17 2012-10-17 Interlocking mechanism of medium pressure switchgear Active CN102881486B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210396204.2A CN102881486B (en) 2012-10-17 2012-10-17 Interlocking mechanism of medium pressure switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210396204.2A CN102881486B (en) 2012-10-17 2012-10-17 Interlocking mechanism of medium pressure switchgear

Publications (2)

Publication Number Publication Date
CN102881486A CN102881486A (en) 2013-01-16
CN102881486B true CN102881486B (en) 2014-08-27

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109559919A (en) * 2018-12-17 2019-04-02 江苏大烨智能电气股份有限公司 A kind of high-tension switch gear mechanism interlock

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201032613Y (en) * 2007-02-16 2008-03-05 常熟开关制造有限公司(原常熟开关厂) Interlocking device for switching equipment
CN201252037Y (en) * 2008-09-05 2009-06-03 厦门华电开关有限公司 Interlocking device for cable vault door
CN201726041U (en) * 2010-05-07 2011-01-26 大全集团有限公司 Grounding switch interlocking device
CN202905516U (en) * 2012-10-17 2013-04-24 博耳(无锡)电力成套有限公司 Medium voltage switch cabinet interlocking mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201032613Y (en) * 2007-02-16 2008-03-05 常熟开关制造有限公司(原常熟开关厂) Interlocking device for switching equipment
CN201252037Y (en) * 2008-09-05 2009-06-03 厦门华电开关有限公司 Interlocking device for cable vault door
CN201726041U (en) * 2010-05-07 2011-01-26 大全集团有限公司 Grounding switch interlocking device
CN202905516U (en) * 2012-10-17 2013-04-24 博耳(无锡)电力成套有限公司 Medium voltage switch cabinet interlocking mechanism

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