CN101136539A

CN101136539A - Interlocking device for electronic switchgear

Info

Publication number: CN101136539A
Application number: CNA2007101427659A
Authority: CN
Inventors: 马赛厄斯·格斯纳
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2006-08-28
Filing date: 2007-08-23
Publication date: 2008-03-05
Also published as: DE102006041366B3

Abstract

The invention relates to an lock for a switch device for locking or releasing an earthing switch drive based on the working position or separating position of the breaker. The lock has a locking sleeve of a joint pin for holding the earthing switch drive with a slot opening and a locking lever beared rotatably is inserted into the lock sleeve through the slot opening. A locking lever is pivotably arranged in the plate of the opening and connected to an activation slide. The activation slide is movable in an opposite direction under mechanical action of a separating part of a circuit breaker for pivoting the lever from the sleeve and for releasing an access to the switch drive.

Description

The lockset that is used for electric switchgear

Technical field

The present invention relates to a kind of lockset that is used for electric switchgear, be used for according to the service position of insertable circuit breaker or separation point position by the lock bolt locking or discharge manipulation the ground connection switch driver.

Background technology

In the electric switchgear that comprises circuit breaker, isolating switch or Test Switchboard and earthed switch, known for a long time lockset is used for alternately locking or discharges the manipulation of the switch shaft of switch separately.

The mechanical lock that known force transmitted or shape sealing ground operation tool effect, that prevention engages with driver rotatablely moves causes the very big mechanical load of associated components and makes their distortion or damage.

Known in addition at switching device the import department's pressing plate that leads to switch shaft or the operation lockset of sliding door bolt form, their stop sleeve operation tool and thereby prevent the master cock axle.But this lockset is unreliable and the operation and impaired in this case by force of possibility quilt.

For example in the switching device that comprise earthed switch known, jam plate is set by DE19858688C1, this jam plate can move to the grounding device axle top of a manipulation earthed switch, thereby stops operation tool and grounding device axle to mesh also thereby prevent to handle earthed switch.

DE29601101U1 has introduced a kind of switching device, and it has the equipment plug-in unit that comprises earthed switch.Set lockset accordingly with the manipulation door bolt of earthed switch, so that lock this manipulation door bolt at the earthed switch on-position.When earthed switch was connected, rocking bar can be locked in it equipment plug-in unit is remained on the position of separation point position, and when earthed switch disconnects it is discharged.

By the known a kind of isolating switch that is used for switchgear housing of DE10301270A1, wherein, switch lever is fixedlyed connected with the stopper arms on being installed in bearing support, and can be in contact position or non-contacting position according to go lock position or the stop position that are located at the load clamp on the stopper arms.

In addition, can also be as prior art referring to the circuit breaker insert arrangement of in DE19757402A1, introducing that is used for supply of electric power and distribution, wherein, center rest can hold plug-in unit and extract out extracting under the state fully the plug cavity from release unit.The characteristics of this circuit breaker insert arrangement are that functional character " opens circuit ", " isolation " and " ground connection ".

Also should mention known a kind of device at last by DE1740069U1, this device is used in the crossbar selector that a plurality of rotatable switches the are arranged unallowed switch condition of plug-in type electromagnetic key drive machinery locking, wherein, be used to insert the rotatably mounted sleeve of plug-in type telegraph key, differential trench open and be provided with the cam that drives the strut rail rail on circumference.Movable lock bolt is bearing in the strut rail rail, and movable lock bolt drops in the sleeve groove of the switch of wanting locking when the motion of being introduced by cam.

Summary of the invention

Technical problem to be solved by this invention is, for the switching device that comprises circuit breaker and earthed switch, provide a kind of and be used for when circuit breaker is in service position or separation point position locking or discharge device, be designed to it simple and can prevent to damage and stop manipulation of switch shaft reliably with allowing earthed switch to the manipulation of earthed switch.

According to the present invention, above-mentioned technical problem is solved by a kind of lockset that is used for electric switchgear, this lockset is used for according to the service position of plug in circuit breaker or separation point position by the lock bolt locking or discharge manipulation to the ground connection switch driver, it is characterized in that holding described earthed switch driver the cylinder double pointed nail lock tube and be arranged in the plane of notch pivotally and be hinged on the locking bar that the activation that loaded by spring force latches, described lock tube a distance before the cylinder double pointed nail is provided with notch, and described locking bar is inserted in the notch under spring action in the service position and the opening section of sealing lock tube, wherein, activation is latched in the separation point position and can moves in the opposite direction under the mechanism of driven separating part, so that locking bar is produced and discharges the import of the cylinder double pointed nail that leads to the earthed switch driver from lock tube.

Basic thought of the present invention is, disposes a locking bar of handling by spring-loaded activation door bolt, and it is inserted in the notch of lock tube when circuit breaker is in the service position and the cross section of its vacancy of locking fully.Therefore, no longer can approaching want the earthed switch driver of locking in lock tube, to be located at the cylinder double pointed nail of notch back, thereby can not handle the earthed switch driver.Only can be when reality is used by approaching can not be operated by force or be damaged of lock tube with the locking bar of two-side supporting in notch.Only when another switch (circuit breaker) arrives separation point position (" disconnection " position), mechanical force overcomes the spring force automatism on the activation bar, thereby makes hinged with it locking bar turn-off and thereby discharge the import lead to ground switch driver double pointed nail and can handle earthed switch from lock tube.

This lockset is a part that passes through that driver is connected with movable separating part (circuit breaker, circuit breaker drive part be support plate movably), fixing lock of plug-in type chamber, and the plug-in type chamber is used to handle earthed switch and the circuit breaker that is connected with separating part.Wherein, separating part acts on being provided preferably with on the free end that imports the inclined-plane of activation door bolt in separation point position (circuit breaker " disconnection " position), and the activation door bolt acts on the locking bar and makes it and produces from notch.

The locking bar that can support pivotally around fulcrum and be designed to lamellar that end in inserting lock tube is designed to, and the cross section of the vacancy of its complete filling lock tube and two-side supporting are in notch.

Description of drawings

Describe embodiments of the invention in detail by accompanying drawing below.Wherein:

Fig. 1 represents the plug-in type chamber of electric switchgear, and it is by the movable separating part that is used for circuit breaker and comprise that the fixedly lock of the driver that is used for earthed switch and separating part forms;

Fig. 2 represents the detail view of plug-in type chamber, and this moment, separating part was in the service position and the earthed switch driver is in the lock position;

Fig. 3 represents the view according to Fig. 2, but separating part is in the separation point position and the earthed switch driver is in the off-position; And

Fig. 4 represents to have the detail drawing of the operation tool of the lock tube of cylinder double pointed nail and earthed switch.

Embodiment

Fig. 1 represents the plug-in type chamber 1 in integrated being combined in (unshowned) electric switchgear, its lock 2 is fixedlyed connected with the shell of switching device, and it pass through roller 3 be bearing on (unshowned) slide rail separating part 4 can by a driving shaft 5 that is contained in the lock 2 move to according to Fig. 1 and Fig. 2 service position (circuit breaker " connection ") or according to the separation point position (circuit breaker " disconnection ") of Fig. 3.Operation to the driving shaft 5 of separating part 4 is undertaken by a driving crank of representing in Fig. 16.The earthed switch driver that is combined in the plug-in type chamber 1 comprises that can be bearing in a grounding device axle 7 that also rotatably is fixed on the separating part 4 on the lock 2 with longitudinally moving, and this grounding device axle is connected with hinge push and pull system 8.Fix a cylinder double pointed nail 10 (Fig. 4) that is contained in the lock tube 9 at the free end of hinge push and pull system 8, operation tool 11 (Fig. 1,4) can sleeve on this cylinder double pointed nail.By rotatablely moving of operation tool 11 passed to hinge push and pull system 8 and finally passed to the grounding device axle through the cylinder double pointed nail, (unshowned) earthed switch that is connected with grounding device axle 7 can be moved to " connection " or " disconnection " position.

But carry out when the adjustment of earthed switch only should be in " disconnection " position at circuit breaker, that is to say, when the separating part 4 of plug-in type chamber 1 is in the separation point position, carry out.Be installed in the lockset that is used for the earthed switch driver on the lock 2 for this purpose, the lock tube that is provided with notch 12 9 on being fixed on lock 2, also comprise one can be on lock 2 around fulcrum 13 rotating locking bars 14, this locking bar is hinged on the lower end of activation door bolt 15.Activation door bolt 15 has guide groove 16, and the activation door bolt is provided with on the vertical cheek 18 of pilot pin 17 guiding and moves of lock 2 by guide groove 16.Under an effect that is fixed on the tension spring 19 on the cheek 18, activation door bolt 15 remains in upper position (pressing the service position of the separating part 4 of Fig. 2), this hour locking lever 14 is in substantially horizontal position, and its circular front end that is extended to fan-shaped section 22 20 is inserted in the lock tube 9 by notch 12, and covers the cross section of its opening fully.Thereby be in the service position at separating part 4, that is when being in " connection " position at circuit breaker, operation tool can not arrive the cylinder double pointed nail 10 of hinge push and pull system 8.Grounding device axle 7 can not rotate and can not handle the earthed switch that is in " disconnection " position.Constitute by lamellar, its front end 20 is based on the fan-shaped section 22 that is formed in the there thereby the complete locking bar 14 of the cross section of locking lock tube 9 openings, be bearing in the notch like this, that is, make eliminating fully be acted on the possibility of the tool damage on the locking bar 14 by lock tube 9.

When handling driving shafts 5 in this position with driving crank 6, separating part 4 moves on to the separation point position and handles the activation bar 15 that is provided with importing inclined-plane 21 on the active force ground that terminal location overcomes tension spring 19.Therefore, only when separating part 4 is in separation point position (pressing circuit breaker " disconnection " position of Fig. 3), locking bar 14 just can come out from lock tube 9 in deflection, therefore operation tool 11 can be inserted into fully in the lock tube 9 and with cylinder double pointed nail 10 and mesh, and earthed switch can be adjusted to " connection " position.

Above-mentioned being used for designed simply and reliable operation according to " connection " or " disconnection " the position locking of circuit breaker or the device of release earthed switch.Lockset can not take place be subjected to fierce or wrong external force effect, that is to say can not misoperation.

Claims

1. lockset that is used for electric switchgear, it is used for according to the service position of plug in circuit breaker or separation point position by the lock bolt locking or discharge manipulation to the ground connection switch driver, it is characterized in that holding described earthed switch driver cylinder double pointed nail (10) lock tube (9) and be arranged in the plane of notch (12) pivotally and be hinged on the locking bar (14) that is subjected on the activation door bolt (15) that spring force loads, described lock tube (9) is provided with notch (12) in the preceding a distance of cylinder double pointed nail (10), and described locking bar (14) is inserted in the notch (12) under spring action and the opening section of sealing lock tube (9) in the service position, wherein, activation door bolt (15) can move under the mechanism of driven separating part (4) in the opposite direction in the separation point position, so that locking bar (17) is produced and discharges the import of the cylinder double pointed nail (10) that leads to the earthed switch driver from lock tube (9).

2. according to the described lockset of claim 1, it is characterized by, described lock tube (9), locking bar (14) and activation door bolt (15) are installed on the lock (2) of plug-in type chamber (1) of the fixed-site that is connected with driven separating part (4), wherein, in order to discharge cylinder double pointed nail (10), described separating part (4) overcomes spring force ground machinery and acts on activation and latch in the separation point position.

3. according to the described lockset of claim 2, it is characterized by, activation door bolt (15) has importing inclined-plane (21) in the active region of separating part (4).

4. according to the described lockset of claim 2, it is characterized by, described activation door bolt (15) is gone up guiding at cheek (18) of lock (2) and is moved, and remains on by tension spring (19) and to cause locking bar (14) to be on the position of lock position.

5. according to the described lockset of claim 4, it is characterized by, described activation door bolt (15) is by pilot pin (17) guiding of motion in guide groove (16).

6. according to each described lockset in the claim 1 to 5, it is characterized by, described locking bar (14) is a lamellar, it be inserted in the lock tube (9) the front end (20) that passes through fan-shaped section (22) expansion fully this lock tube of filling (9) open cross-section and remain in the notch (12).