CN2291476Y

CN2291476Y - Mechanical locking device for high-tension switch cabinet

Info

Publication number: CN2291476Y
Application number: CN 97205984
Authority: CN
Inventors: 刘全亮; 黄先明; 叶钧; 张林海
Original assignee: ZIBO UNIVERSAL ELECTRICAL EQUIPMENT INST
Current assignee: ZIBO UNIVERSAL ELECTRICAL EQUIPMENT INST
Priority date: 1997-01-27
Filing date: 1997-01-27
Publication date: 1998-09-16
Anticipated expiration: 2007-01-27

Abstract

The utility model relates to a mechanical locking device for a high tension switch cabinet, which is provided with a tailor-made door lock for a mechanical handle, a special structural lock core and an L-shaped lock tongue. A rotating shaft is arranged on a supporting frame on the side wall of a switch cabinet. The front end of the rotating shaft is a slewing block stop, and the back end is connected with an angle bar to form an interlocking mechanism. The L-shaped lock tongue and the angle bar are meshed or disengaged with each other to form status of unlocking and locking in a moveable overlapping joint way. The utility model is suitable for locking for a handcart type or a fixed high tension switch cabinet, and the locking is between a handcart and a back door, between a front door and the back door, between the front door and a guillotine. The utility model has the advantages of simplicity, reliability, convenient operation and functions of positive and anti-positive locking. Because the special structure of the lock core of the door lock for a handle, the utility model can carry out emergent unlocking under the operating state.

Description

The mechanical locking device of high-tension switch cabinet

The utility model relates to the anti-misoperation locking device of power system, especially a kind of mechanical locking device of novel high-tension switch cabinet.

High-tension switch cabinet commonly used has handcart-type and fixed, the blocking device five-defence block function of prior art high-tension switch cabinet is undesirable, especially the handcart of handcart-type or fixed high-voltage switch cubicle and back door locking, the locking between Qianmen and the back door, and the locking between Qianmen and plug-in strip.

The handcart type high-voltage switch cabinet has advantages such as compact conformation, closure is good, maintenance is convenient, wide popularization and application in the following transformer and distribution station of 35KV.

The domestic handcart switch cabinet that puts into operation and producing of having installed of prior art, still not meeting country prevents (preventing that on-load from drawing isolating switch, preventing charged hanging earthing conductor, prevent to be with ground wire to close disconnecting link about five, prevent that the mistake branch from closing line breaker by mistake, prevents mistakenly entering charged chamber) requirement.Old-fashioned for example GFC type back door is provided with locking, in servicely can arbitrarily open the back door, thereby the personal injury of mistakenly entering charged chamber, New J IN, KYN, GC may take place ₂Though type handcart cabinet is equipped with the ground connection disconnecting link that there is latch switch at switch handcart and back door, but on the combined floodgate position, both there be not high voltage testing and the high forced blocking measure that can not close a floodgate when being pressed with electricity.Opened the back door before again can not splice grafting ground disconnecting link and carry out artificial electrical verification, so when as being subjected to have serious potential danger in electric cabinet and the double circuit power supply system.

The fixed switchboard of prior art, for example GG-1A, GG-10 type, its five-defence block measure is not the function imperfection, is exactly that the blocking mechanism action is unreliable, particularly the latch-up problem at back door not obtaining satisfied the solution.

The purpose of this utility model is the novel mechanical blocking device that will develop a kind of intuitive and reliable, inexpensive practicality, can take into account handcart-type and fixed high-voltage switch cubicle.

The utility model is realized by following technical solution:

Develop a kind of mechanical locking device of high-tension switch cabinet, comprise lock body, lock shaft and key etc., it is characterized in that:

One mechanical handle door lock 1 is installed on back door 2, is connected with one " L " shape cam dead bolt 4 on its handle shaft extension end 22, fore-stock 10 and after-poppet 7 are installed on the switchboard sidewall, turning cylinder 8 is installed between two stands,

Turning cylinder 8 front ends at fore-stock 10 places are being fixed revolution block 9,

Turning cylinder 8 rear ends at after-poppet 7 places are with the angle end inner edge welding of angle bar 6.

Described mechanical handle door lock 1, at handle 12 galianconism ends, in the bullet groove 26 of long-armed parallel direction, closed assembly steel ball 15, pellet shot from a slingshot 14 and spring 13 successively.

In the both sides of described angle bar 6, its vertical edges is articulating spring 5, and its widthwise edge and " L " shape cam dead bolt 4 engagement/disengaging activities overlap joint that is fixed on handle shaft extension end 22 ends constitute switchboard locking/released state.

Below in conjunction with drawings and Examples the utility model is further elaborated:

Fig. 1 is overall structure, the position view of an embodiment of mechanical locking device of high-tension switch cabinet;

Fig. 2 is its mechanical handle door lock 1 structural representation;

Fig. 3 is its " L " shape cam dead bolt 4 and angle bar 6 engagement schematic diagrames (be the E-E view of Fig. 1, turn clockwise 90 °, the back door is lock position not);

Fig. 4 is at the back door during by locking. its revolution block 9 and the baffle plate 24 location status schematic diagrames (the A-B-C-D view among Fig. 1) that are installed in switchboard one side.

Among the figure: the 1st, the novel mechanical handle door lock of developing in the utility model (is called for short the gate lock, JMS); The 2nd, handcart cabinet back door; The 3rd, keeper; The 4th, " L " shape cam dead bolt; The 5th, the spring of tractive angle bar; The 6th, by the angle bar of spring tractive; The 7th, after-poppet; The 8th, turning cylinder; The 9th, the revolution block; The 10th, fore-stock; The 11st, the key of mechanical handle door lock; The 12nd, handle; The 13rd, the lock core spring of promotion pellet shot from a slingshot; The 14th, pellet shot from a slingshot in the lock core; The 15th, push the steel ball of pellet shot from a slingshot in the lock core; The 16th, handle base; The 17th, pin; The 18th, plug; The 19th, lock core; The 20th, packing ring; The 21st, nut; The 22nd, handle shaft extension end; The 23rd, nut; The 24th, baffle plate; The 25th, lock pin; The 26th, bullet groove.

When embodiment 1 is used for the handcart type high-voltage switch cabinet as car door mechanical locking device (tube title car door closes CMB) with this device, fore-stock 10 has a groove, be able to embed therebetween when making revolution block 9 half-twists, at after-poppet 7 places, effect by spring 5, when free state, revolution block 9 is screwed out in the groove of fore-stock 10, the wheelbarrow switch cabinet is locked in testing position.Relevant position at cabinet back door 2, special mechanical handle door lock 1 is housed, this grip handle lock is that dead bolt 4 is " L " shape cam faces with the difference of general grip handle lock, has special meshing relation with the widthwise edge of angle bar 6 in the blocking device, " L " shape cam lock lingual ribbon moves angle bar 6 at closing time, make turning cylinder 8 change 90 ° clockwise, block 9 is embedded in the groove of fore-stock 10 the handcart release; After the handcart cabinet is pushed into the operating position, the block 9 that the baffle plate 24 that is installed in handcart one side will be positioned at turning cylinder 8 front ends blocks, turning cylinder 8 can not be rotated again, the another side of the angle bar 6 that is connected with turning cylinder 8 rear ends simultaneously blocks the L shaped cam dead bolt 4 on the handle door lock 1 again, it can not be reversed, and the back door can not be opened by locking.

During interruption maintenance: breaking circuit breaker, pull out handcart to testing position, block 9 screws out 90 ° by the effect of spring 5 in the groove of fore-stock 10, the locking handcart, the back door release, the mechanical handle door lock changes 90 ° counterclockwise and opens the back door.

When sending electricity, shut back door 2 earlier and mechanical handle door lock 1 changeed 90 °, drive turning cylinder 8 half-twists, block 9 is embedded in the groove of fore-stocks 10 along the pin directions, the handcart release, be pushed into run location after, again with the back door locking, switch can send.

When this device is used in having the wheelbarrow switch cabinet of ground connection disconnecting link and is transformed, should remove the locking (being the locking that to open the door behind the splice grafting ground disconnecting link) at ground connection disconnecting link and back door earlier, adding a block on the back door in addition claims the cutter door to close that (being called for short the cutter door closes, DMB), making its latching relation change out the back door into could splice grafting ground disconnecting link.Latching relation conversely is, closed the ground connection disconnecting link, can not closing back door, and opening the ground connection disconnecting link could closing back door.

The handcart cabinet stops sending electric operating sequence just to become like this:

Car door closes (CMB) gate lock (JMS) cutter door and closes (DMB) handcart ←------→ back door ←------------→ ground connection disconnecting link

Artificial electrical verification

Be applicable to GFC, GC ₂, model handcart type high-voltage switch cabinets such as JYN, KYN, prevent mistakenly entering charged chamber; Change the operating sequence of ground connection cutter, reach and prevent charged splice grafting ground disconnecting link.

Embodiment 2, this device is installed in the mechanical latching that can realize in the fixed high-voltage switch cubicle between front door of switch cabinet and the back door (closes before and after being called for short, QHB).Can prevent mistakenly entering charged chamber.

Structurally change is that two ordinary stents are installed on the fixed switchboard lower right sidewall, revolution block 9 is installed on rotating shaft 8 front ends, another fixed stop is installed on the Qianmen to be meshed with it, mechanical handle door lock (being called for short gate lock JMS), still be loaded on the back door, its latching relation is become: open the Qianmen earlier, could open the back door again; Do not shut the back door, does not close at the Qianmen yet.

Be applicable to model fixed high-voltage switch cubicles such as GG-1A, GG-10, prevent mistakenly entering charged chamber.And can form the electric-linked blocking device of JLS type Mechanically programm with this novel procedure lock, electromagnetic lock, composite lock of developing.

Embodiment 3, the mechanical handle door lock that has changed the given shape dead bolt are loaded on preceding the calling of GG-1A, GG-10 type fixed switchgear, match with the related mechanism of isolation switch and can realize the anti-misoperation locking of disconnecting link and Qianmen lock.To the doorstep, closed the Qianmen and just can close isolation switch before disconnecting link is opened and just can be opened.

Facts have proved that the utility model circle pool ground has reached its intended purposes.

Compared with prior art, have obvious superiority:

1, gives prominence to the advantage such as simple and reliable, easy to operate of mechanical latching, had again very flexibly locking Mode and perfect five-defence block function, the handcart that is widely used in handcart-type or fixed high-voltage switch cubicle with after The door locking, the locking between Qianmen and the back door, and the locking between Qianmen and plug-in strip.

2, the mechanical handle door lock of this device (is called for short the gate lock, JMS) has in working order down, can carry out The mechanism of emergency release, at the in-built lock core 19 that has the inner that eccentric shaft is arranged of the outer stomidium of handle, eccentric shaft is stirred quarter Eccentric breach lock pin 25 is arranged. Under normal circumstances lock core 19 is by 14 lockings of short cylindrical pellet, and eccentric shaft makes this pin 25 Outside the outstanding axle, with 90 ° of breach engagement limits of handle base 16 handle can only in 90 °, rotate with realization and open Door and the action of closing the door.

In running, " L " shape cam dead bolt 4 of handle shaft extension end 22 has been blocked the device locking, can not Counterclockwise rotate and open the door, need to open the door if any emergency and check and when disposing this moment, can be with special use Unlock key 11 insert in the lock core holes, retract even make lock core 19 be rotated counterclockwise 180 ° of pins with key 11 And release, this moment, handle 12 can continue to turn clockwise between 90 °～180 °, all can realize the action of opening the door, When checking and dispose complete handle 12 repositions, key 11 is reposition and dial-out also, has namely recovered the locking shape Attitude.

Claims

1, a kind of mechanical locking device of high-tension switch cabinet comprises lock body, lock shaft and key, it is characterized in that:

A, a special mechanical handle door lock (1) is arranged, its handle shaft extension end (22) connects one " L " shape cam dead bolt (4), and closed assembly steel ball (15), pellet shot from a slingshot (14) and spring (13) successively in bullet groove (26),

B, fore-stock (10) and after-poppet (7) are installed on the sidewall of switchboard, turning cylinder (8) are installed between two stands,

C, at turning cylinder (8) front end that fore-stock (10) is located, fixing revolution block (9),

D, in turning cylinder (8) rear end that after-poppet (7) is located, with the angle end inner edge welding of angle bar (6).

2, device according to claim 1, it is characterized in that in the both sides of described angle bar (6), its vertical edges is articulating spring (5), and its widthwise edge and " L " shape cam dead bolt (4) engagement/disengaging activity overlap joint that is fixed on handle shaft extension end (22) constitute locking/released state.