CN208539435U - A kind of handcart interlocking mechanism of five-prevention interlocking device - Google Patents

Abstract

The utility model discloses a kind of handcart interlocking mechanisms of five-prevention interlocking device, including the drive mechanism for operating axis connection with earthing switch, the torque of earthing switch operating shaft capable of being passed to circuit breaker cart, the locking structure for being connect with drive mechanism, circuit breaker cart being prevented to be extracted breaker chamber in grounding switch tripping, with locking structure linkage, the limiting structure of operating breaker handcart when the grounding switch is closed is prevented, and prevents the circuit breaker cart location structure that earthing switch closes a floodgate not in testing position；Above-mentioned handcart interlocking mechanism is safe and reliable, pass through the cooperation between multiple structures, guarantee only have circuit breaker cart in testing position, earthing switch operating shaft just closes a floodgate to earthing switch, and it is avoided that when the grounding switch is closed, when can operate worm screw by operation handcart and circuit breaker cart is pushed into operating position, and prevent grounding switch tripping, circuit breaker cart is pulled out into breaker chamber.

Description

A kind of handcart interlocking mechanism of five-prevention interlocking device

Technical field

The utility model relates to hands injured technical fields, and in particular to a kind of handcart interlocking mechanism of five-prevention interlocking device.

Background technique

When hands injured breaks down or overhauls, in order to ensure personal safety, operator after earthing switch must close a floodgate It just can enter, therefore the interlocking of earthing switch and door is indispensable in high-tension switch gear.In the operating process of hands injured In to accomplish " five anti-": 1, the circuit breaker cart in hands injured cannot be introduced into operating position after experimental site combined floodgate；2, handcart At the time of apposition, breaker can not close a floodgate the earthing of cabinet cabinet；3, the breaker in hands injured during closing operation, after disk cabinet Door is latched with the machinery on earthing with cabinet door；4, the breaker in hands injured closes a floodgate at work, and grounding knife can not be put into； 5, the breaker in hands injured when working and closing operation, can not exit the operating position of circuit breaker cart.

The design of interlocking mechanism is to meet in breaker chamber " five is anti-" requirement between circuit breaker cart and earthing switch " prevent accidentally point, accidentally close earthing switch " and design, it acts as: only earthing switch be in gate-dividing state when, breaker Handcart could shake from testing position and enter operating position；Breaker earthing switch at operating position cannot close a floodgate, with effectively anti- Only maloperation；Existing breaker chamber it is difficult to ensure that interlocking it is reliable, or deposit that driving error in post-conversion is big, movement is not achieved and wants The missing asked, there are security risks.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome defect in the prior art, to provide one kind Securely and reliably, it is convenient to operate, and circuit breaker cart could shake from testing position when earthing switch is in gate-dividing state enters working position It sets, breaker earthing switch at operating position cannot close a floodgate, to effectively prevent the handcart connection of the five-prevention interlocking device of maloperation Latch mechanism.

A kind of handcart interlocking mechanism of five-prevention interlocking device, including with earthing switch operation axis connection, can be by the ground connection The torque of switch operating shaft passes to the drive mechanism of circuit breaker cart, connect with the drive mechanism, prevents the breaker Handcart is extracted the locking structure of the breaker chamber in grounding switch tripping, with locking structure linkage, prevents in institute It states when earthing switch closes a floodgate and operates the limiting structure of the circuit breaker cart, and prevent circuit breaker cart not in testing position when institute State the location structure of earthing switch combined floodgate.

The drive mechanism includes the rocking bar for rotating and swinging with the earthing switch operating shaft, in the effect of the rocking bar The lower joint arm rotated, is fixedly connected and with the swingle that the joint arm rotates with the joint arm, and is connected to the rotation Bar is with respect to the driving cam at the position of third locking plate.

The locking structure includes the handcart operation worm screw slidable connection of opposite circuit breaker cart, opposite drive mechanism The third locking plate of driving cam setting takes shape in breaker chamber side wall, is adapted to the third lock of grafting with the third locking plate Only hole, and connect the third locking plate and breaker chamber side wall, the third locking plate is made to be plugged in the third lock The only third return unit in hole.

The limiting structure includes the limiting groove for taking shape in handcart the operation worm screw and third locking plate junction, The first handle hole for taking shape in the third locking plate, allowing handcart operation worm screw rotation process in it, and described Cooperate when third locking plate is moved to the left under the action of the driving cam with the limiting slot, limit the handcart operation snail First limiting holes of bar rotation process.

The location structure includes that can protrude outward under the action of the circuit breaker cart, in the effect of the 4th return unit The positioning pin inwardly replied down takes shape in the third locking plate and the positioning pin junction, allows the positioning pin opposite Second handle hole of the third locking plate disengaging movement, and institute is allowed when the positioning pin and the circuit breaker cart offset State third locking plate be moved to the left, prevented when the positioning pin is not connect with the circuit breaker cart third locking plate to The third handle hole moved left.

Having between the driving cam and sliding part of the drive mechanism can prevent the earthing switch described disconnected Road device handcart does not reach the barrier structure to close a floodgate when testing position.

The barrier structure includes the countercheck rod that is set to the driving cam, can connect with the upper wall of the sliding part； The countercheck rod limits the sliding part sliding under the cooperation of the third locking plate.

The circuit breaker cart can be fixed on described break by being provided between the circuit breaker cart and the breaker chamber The indoor connect-disconnect structure of road device.

The connect-disconnect structure includes the first locking plate and second for being slidably connected to handcart operation worm screw two sides respectively Locking plate, is separately formed at the position of relatively described first locking plate of the breaker chamber inner wall and the second locking plate and institute The first locking hole and the second locking hole of the first locking plate and the cooperation of the second locking plate are stated, first locking plate is resetted first The lower state for keeping being inserted into first locking hole of part effect, second locking plate keep insertion under the effect of the second return unit The state of second locking hole；It will be pulled in first locking plate and the second locking plate phase, so that first locking plate It is detached from first locking hole and the second locking hole respectively with the second locking plate, the circuit breaker cart can be drawn out the open circuit Device room.

The hand handle for grasping is provided on first locking plate and the second locking plate.

Third institute's locking plate and the ipsilateral setting of the first locking plate；It forms on the third locking plate suitable for institute State the mobile loose slot of hand handle.

The circuit breaker cart is provided with the buckle structure that can position the operating position of the circuit breaker cart；The lock Structure includes the closing piece for being set to handcart operation worm screw, be mounted on the selvage at the operating position form it is suitable The lockhole of locking is caught in the locating piece.

Technical solutions of the utility model have the advantages that

1. the handcart interlocking mechanism of five-prevention interlocking device provided by the utility model, including connect with earthing switch operating shaft It connects, the torque of earthing switch operating shaft can be passed to the drive mechanism of circuit breaker cart, connect with drive mechanism, prevent open circuit Device handcart is extracted the locking structure of breaker chamber in grounding switch tripping, with locking structure linkage, prevents in earthing switch The limiting structure of operating breaker handcart when combined floodgate, and prevent determining for circuit breaker cart earthing switch combined floodgate not in testing position Bit architecture；Above-mentioned handcart interlocking mechanism is safe and reliable, by the cooperation between multiple structures, guarantees only have circuit breaker cart trying When testing position, earthing switch operating shaft just closes a floodgate to earthing switch, and is avoided that when the grounding switch is closed, can pass through behaviour When making handcart operation worm screw and circuit breaker cart is pushed into operating position, and preventing grounding switch tripping, circuit breaker cart is taken out Pull out breaker chamber.

2. the handcart interlocking mechanism of five-prevention interlocking device provided by the utility model, locking structure includes opposite breaker The third locking plate that the handcart operation worm screw slidable connection of handcart, the driving cam of opposite drive mechanism are arranged, takes shape in disconnected Road device room side wall, the third locking hole that grafting is adapted to third locking plate, and connection third locking plate and breaker chamber side wall, So that third locking plate is plugged in the third return unit of third locking hole；Above-mentioned locking structure is locked using third locking plate, third Only circuit breaker cart is locked in breaker chamber by hole and third return unit, and third locking plate is inserted under the action of third return unit In third locking hole, only when earthing switch closes a floodgate, the driving cam of drive mechanism acts on third locking plate, so that the Three locking plates are moved to the left, and are detached from third locking hole, circuit breaker cart could be pulled out breaker chamber, can effectively prevent from connecing Circuit breaker cart is pulled out into breaker chamber when ground switchs separating brake, maloperation is prevented, improves the security performance of hands injured.

3. the handcart interlocking mechanism of five-prevention interlocking device provided by the utility model, limiting structure includes taking shape in handcart The limiting groove for operating worm screw and third locking plate junction takes shape in third locking plate, allows handcart operation worm screw in its inward turning Cooperate when turning the first handle hole of operation, and being moved to the left under the action of third locking plate is in driving cam with limiting groove, limit First limiting holes of handcart operation worm screw rotation process processed；Above-mentioned limiting structure passes through the movement of third locking plate, handcart operation Worm screw and the connection of third locking plate change, and when handcart operation worm screw connect with the first handle hole, handcart operates worm screw It can be operated, when handcart operation worm screw connect with the first limit hole, handcart operation worm screw cannot be operated, such handcart operation Worm screw and grounding switch operation interlocking.

4. the handcart interlocking mechanism of five-prevention interlocking device provided by the utility model, location structure includes can be in breaker The positioning pin for protruding outward under the action of handcart, inwardly being replied under the action of four return units, take shape in third locking plate with Positioning pin junction allows positioning pin with respect to the second handle hole of third locking plate disengaging movement, and in positioning pin and breaker Allow third locking plate to be moved to the left when handcart offsets, when positioning pin is not connect with circuit breaker cart prevent third locking plate to The third handle hole moved left；In above-mentioned location structure, positioning pin, the 4th return unit, circuit breaker cart and third locking plate Between mutual cooperation, when circuit breaker cart is located at operating position, circuit breaker cart not with positioning pin connection, at this point, positioning Pin is inserted into limitation third locking plate in the second handle hole under the action of four return units and is moved to the left, and earthing switch can not close Lock, when circuit breaker cart is located at testing position, circuit breaker cart and positioning pin connection, and positioning pin is ejected outward, this When, positioning pin releases the limitation to third locking plate, and third locking plate can be moved to the left, and positioning pin enters in third handle hole, Earthing switch closes a floodgate；Said structure design is ingenious, securely and reliably, guarantees circuit breaker cart at operating position, earthing switch is not It can close a floodgate, prevent maloperation.

5. the handcart interlocking mechanism of five-prevention interlocking device provided by the utility model, barrier structure includes being set to transmission Cam, the countercheck rod that can be connect with the upper wall of sliding part；Countercheck rod limits sliding part sliding under the cooperation of third locking plate；On It states barrier structure and prevents sliding part from not completely arriving in circuit breaker cart using the countercheck rod on third locking plate and driving cam Slide downward when testing position, so that the operation port of earthing switch operating shaft is exposed, when circuit breaker cart does not reach testing position When, earthing switch is in gate-dividing state, and third locking plate is locked by location structure, cannot bounce back, at this point, pressing down on sliding Part, countercheck rod are connect with sliding part, and the one end of driving cam far from countercheck rod offsets with third locking plate, and prevents driving cam Continue to rotate so that sliding part also can not slide downward, and then operation port can not be opened, and earthing switch combined floodgate can not be carried out；On Stating barrier structure can guarantee the combined floodgate that only just can be carried out earthing switch when circuit breaker cart is in testing position, safely may be used It leans on, prevents maloperation.

6. the handcart interlocking mechanism of five-prevention interlocking device provided by the utility model, circuit breaker cart is additionally provided with will be breaking Device handcart is fixed on the indoor connect-disconnect structure of breaker；Connect-disconnect structure includes the first locking plate and second that opposite can be slidably connected Locking plate is separately formed multiple in the first locking hole of breaker chamber inner wall and the second locking hole and the first return unit and second Position part；Above-mentioned connect-disconnect structure is matched by the first locking plate and the second locking plate and respectively with the first locking plate and the second locking plate Circuit breaker cart is fixed in breaker chamber by the first return unit and the second return unit closed, solid and reliable, only inside with hand It pulls the first locking plate and the second locking plate that could unlock connect-disconnect structure, extracts circuit breaker cart out breaker chamber, structure jail Gu reliable.

7. the handcart interlocking mechanism of five-prevention interlocking device provided by the utility model, on the first locking plate and the second locking plate It is provided with hand handle；Above structure is for the ease of holding the first locking plate of operation and the second locking plate.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is structural schematic diagram of the provided by the utility model five anti-interlocking mechanisms under the opening state of front door；

Fig. 2 is structural schematic diagram of the provided by the utility model five anti-interlocking mechanisms under preceding door closure state；

Fig. 3 is the structural schematic diagram of rear door interlocking mechanism shown in Fig. 2；

Fig. 4 is the structural schematic diagram of front gate interlocking mechanism shown in Fig. 2；

Fig. 5 is the structural schematic diagram of another angle of front gate interlocking mechanism shown in Fig. 2；

Fig. 6 is the structural schematic diagram of handcart interlock shown in Fig. 2；

Fig. 7 is the schematic diagram of drive mechanism shown in fig. 6；

Fig. 8 is the schematic diagram of locking structure shown in fig. 6, limiting structure and location structure；

Fig. 9 is the structural schematic diagram of driving cam shown in fig. 6；

Figure 10 is the structural schematic diagram of positioning pin shown in fig. 6；

Figure 11 is the structural schematic diagram of third locking plate shown in fig. 6；

Figure 12 is the structural schematic diagram of the first locking plate shown in fig. 6；

Figure 13 is the structural schematic diagram of the second locking plate shown in fig. 6；

Figure 14 is the structural schematic diagram that handcart shown in fig. 6 operates worm screw；

Figure 15 is the schematic diagram of cable chamber door locking structure shown in Fig. 2；

Description of symbols: 1, earthing switch operating shaft；2, rear door interlocking mechanism；21, the first position limiting structure；211, it props up Frame；212, the second gag lever post；2121, limiting slot；213, the first gag lever post；214, the first resilient bias；215, position-limited wheel； 22, locking structure；221, latch hook；222, lockplate；3, front gate interlocking mechanism；31, first baffle；311, through-hole；312, it operates Mouthful；32, second baffle；33, sliding part；331, track；3311, the first track；3312, the second track；332, handle；34, bullet Property block；341, limited block；35, fastener；4, circuit breaker cart；41, the first locking plate；411, the 4th handle hole；412, the 5th Handle hole；413, the first circular hole；414, the second limiting holes；42, hand handle；43, the second locking plate；431, the 6th handle hole；432, 7th handle hole；433, the second circular hole；434, third limiting holes；44, positioning pin；441, first part；442, second part； 443, Part III；45, handcart operates worm screw；451, limiting groove；46, third locking plate；461, the first handle hole；462, first Limiting holes；463, the second handle hole；464, third handle hole；47, third locking hole；48, loose slot；49, the first locking hole；5, Cable vault's locking structure；51, rocker arm；52, rocker cam；53, hanger plate；54, cross bar；55, fixed plate；6, drive mechanism；61, Rocking bar；611, slide opening；62, joint arm；621, cunning is convex；622, boss；63, swingle；64, driving cam；641, countercheck rod；65, Rocker cam；66, bracket.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

As depicted in figs. 1 and 2, five-prevention interlocking device includes earthing switch operating shaft 1, can by it is positive, rotate backward and make Obtain earthing switch switch closing and switch opening；Rear door interlocking mechanism 2, in positive, the counter-rotational control of the earthing switch operating shaft 1 Under, drive back door to unlock or locking, and limit that be just able to rotate the earthing switch operating shaft 1 under the back door blocking right Earthing switch closes a floodgate；Front gate interlocking mechanism 3, connect with circuit breaker chamber door and cable chamber door, passes through circuit breaker chamber door and cable vault The unlatching of door is closed to control the unlatching and closure of the operation port for operating the earthing switch operating shaft 1；Handcart interlocking machine Structure, connection circuit breaker cart 4 and the earthing switch operating shaft 1, the position by positioning circuit breaker cart 4 are opened to control ground connection The operation for closing operating shaft 1 and handcart operation worm screw 45, so that described in the circuit breaker cart 4 could complete when be in testing position The combined floodgate of earthing switch, and lock the circuit breaker cart 4；The earthing switch operating shaft 1 runs through the hands injured, and is arranged Between the breaker chamber and cable vault；The rear door interlocking mechanism 2 and the front gate interlocking mechanism 3 are separately positioned on described The both ends of earthing switch operating shaft 1.

It should be noted that rotate forward and rotate backward be for illustrate rotation contrary, the earthing switch After the axial direction rotation of operation, opposite to that direction is as reversed.

Further, the rear door interlocking mechanism 2 includes with the earthing switch operating shaft 1 rotation, can lock the back door Locking structure 22, and the first position limiting structure 21 that is mobile, allowing earthing switch operating shaft 1 to rotate that can offset with the back door.

Specifically, as shown in figure 3, the locking structure include setting in the earthing switch operating shaft 1 after described The latch hook 221 of door one end, and the lockplate 222 for being fixed on the back door, being hooked suitable for the latch hook 221；The earthing switch When operating shaft 1 rotates, the locking structure 22 can be rotated synchronously with the earthing switch operating shaft 1, and the earthing switch closes a floodgate, The locking structure 22 unlocks, the grounding switch tripping, and the locking structure 22 locks；Above-mentioned locking structure connects described in guaranteeing When ground switchs separating brake, back door locking can not open, ensure that the safety operation of rival car cabinet.

First position limiting structure 21 includes that the earthing switch operating shaft 1 is arranged in close to the bracket 211 at the back door, It, can be under the action of the first resilient bias and back door described through the first gag lever post 213 being fixed on the bracket 211 The second gag lever post 212 of limiting slot 2121 is moved and formed on first gag lever post 213, and setting is operated in the earthing switch On axis 1, it can be aligned when back door is closed with the limiting slot and can be by the position-limited wheel 215 of the limiting slot 2121；Above-mentioned One position limiting structure is to compress second gag lever post 212 when closed using back door, so that the institute on second gag lever post 212 It states limiting slot 2121 to be aligned with the position-limited wheel 215, the earthing switch operating shaft 1 described in this way can pass through the first position limiting structure 21 Rotation, guarantee ability operational grounding must switch operating shaft under the rear door closure state.

In addition, in the present embodiment, being bolted to connection between the lockplate 222 and the back door, the spiral shell Bolt is screwed from the back door to the lockplate 222, the earthing switch operating shaft 1 can not back door described in Unscrew when, For emergency opening back door.

The working principle of the rear door interlocking mechanism are as follows:

When the back door is in close state, second gag lever post 212,212 phase of the second gag lever post can be squeezed Compressive state is in first gag lever post 213, at this point, taking shape in the limiting slot 2121 of second gag lever post 212 It is aligned with the position-limited wheel 215, the 215 energy limiting slot 2121 of position-limited wheel passes through, in this way, when the earthing switch operates Axis 1 rotates separating brake, and the latch hook 221 will rotate with the earthing switch operating shaft 1, is detached from the lockplate 222, it is described just It can open；If the back door is in the open state, second gag lever post 212 will be sheathed on first gag lever post It is returned to original state under the action of 213 elastic first bias piece, at this point, the limiting slot 2121 and the position-limited wheel 215 are misaligned, and when operating the earthing switch operating shaft 1, position-limited wheel 215 is stopped by second gag lever post 212, the ground connection Switch operating shaft 1 can not rotate.

As shown in figure 4,3 earthing switch of front gate interlocking mechanism and the front gate interlocking mechanism 3 at front door include being arranged in institute It states on the cabinet wall of hands injured, the first baffle 31 with the operation port 312 for operational grounding switch operating shaft 1 and described the One baffle 31 cooperatively forms the second baffle 32 of accommodation space, is slidably set in the accommodation space, can open or close The sliding part 33 of the operation port 312 is closed, and can be controlled respectively by positioning the state of the circuit breaker chamber door and cable chamber door Make the second position limiting structure that the sliding part 33 slides；The circuit breaker chamber door and cable chamber door could be by the cunnings when being turned off Moving part 33 slides, and then opens the operation port 312；The relatively described earthing switch operating shaft 1 of the operation port 312 is arranged, and fits It is inserted into workpiece；The circuit breaker chamber door and cable chamber door can contact when closed with the first baffle 31, from connection institute State the second position limiting structure.

Above-mentioned front gate interlocking mechanism 3 is matched by first baffle 31, second baffle 32, sliding part 33 and the second position limiting structure The interlocking for realizing circuit breaker chamber door and cable chamber door and earthing switch is closed, only when the circuit breaker chamber door and cable chamber door are equal When closing, i.e., with the circuit device room the second opposite position limiting structure of door and second position limiting structure opposite with the cable chamber door When unlocking, ability operational grounding switchs operating shaft 1, closes a floodgate to earthing switch.

The sliding part 33 forms the hand for grasping, convenient for sliding the sliding part 33 at the operation port 312 Handle 332；Press down on, 33 slide downward of sliding part opens the operation port 312, lift upwards, the sliding part 33 to The operation port 312 is closed in upper sliding.

Second position limiting structure includes the third limit knot for the state that can position the circuit breaker chamber door and cable chamber door Structure, and with third position limiting structure cooperation, limit the 4th position limiting structure that the sliding part 33 slides.

Specifically, the third position limiting structure include take shape in the first baffle 31, respectively with the circuit breaker chamber door The through-hole 311 opposite with cable chamber door, i.e., the described relatively described circuit breaker chamber door of first baffle 31 forms through-hole 311, described The relatively described cable chamber door of first baffle 31 forms through-hole 311, and one is limited on the second baffle 32 by disconnecting prevention structure Elastomer block 34 pass through the sliding part 33 and connect with the through-hole 311, it is elastic inclined that second is additionally provided in the elastomer block 34 Casting die, the elastomer block 34 inside retraction or inside and outside of the through-hole 311 relatively under the action of front door and the second resilient bias It is prominent.

Above-mentioned third position limiting structure utilizes the elastomer block 34 and circuit breaker chamber door and cable across the through-hole 311 Room door connection will squeeze the elastomer block 34 inwardly retraction when circuit breaker chamber door, cable chamber door are closed, so that elastomer block 34 It is detached from the through-hole 311, limitation of the elastomer block 34 to the sliding part 33 is released, only when circuit breaker chamber door and cable vault When door is turned off, i.e., and the corresponding elastomer block 34 of the circuit breaker chamber door and elastomer block 34 corresponding with the cable chamber door solves Except the limitation to the sliding shoe, the sliding part 33 could slide downward.

In the present embodiment, the through-hole 311 is rectangular, and one end that the elastomer block 34 cooperates with the through-hole 311 is Cuboid；Certainly, other shapes can also be set by the through-hole 311 with needs according to the actual situation in other embodiments, The elastomer block 34 cooperates with the through-hole 311, and such as through-hole 311 is circle, and the elastomer block 34 is cylindrical body.

The limit that 4th position limiting structure includes the side for taking shape in the elastomer block 34, is connect with the sliding part 33 Block 341, and take shape in 33 side wall of sliding part, suitable for the limited block 341 insertion and mobile track 331 in it；Institute State slideway include suitable for the limited block 341 with the elastomer block 34 the elastomer block 34 first moved in the radial direction Track 3311, and the second slideway for allowing the sliding part 33 to slide up and down；The elastomer block 34 is in class T font.

In above structure, when the circuit breaker chamber door, cable chamber door in the open state, the opposite institute of the elastomer block 34 It states through-hole 311 to protrude outward, the limited block 341 is located in first track 3311 of the track 331, the limited block 341 and the part that is connect with the through-hole 311 of the elastomer block 34 limit the sliding of the sliding part 33 jointly, when described disconnected When road device room, cable door room are closed, the elastomer block 34 is squeezed, and the relatively described through-hole 311 inwardly bounces back, the limited block 341 can move along first track 3311 to the direction far from the first baffle 31, enter second track 3312, When the breaker chamber and cable chamber door are turned off, limited block 341 corresponding with the circuit breaker chamber door and the cable vault The corresponding limited block 341 of door enters second track 3312, presses down on the sliding part 33, second track 3312 It will be moved down along the limited block 341.

The disconnecting prevention structure includes anti-being disengaged from the groove for taking shape in the elastomer block 34 and being pierced by described 32 one end of second baffle, and is inserted Enter the anti-fastener 35 for being disengaged from the groove, the elastomer block 34 being prevented to be detached from, the fastener 35 is clip；Described in above structure Fastener 35 can offset with the outer wall of the second baffle 32, and the elastomer block 34 is prevented to be detached from the second baffle 32.

Second resilient bias is arranged between the limited block 341 and second baffle 32.

The working principle of the front gate interlocking mechanism 3 is as follows:

When the circuit breaker cart 4 reaches testing position, the circuit breaker chamber door and cable chamber door army are closed, and it is described The corresponding elastomer block 34 of circuit breaker chamber door, elastomer block 34 corresponding with the cable chamber door inwardly bounce back, described in disengaging Through-hole 311, at this point, grasping the handle 332 presses down on the sliding part 33, the sliding part 33 is by the operation port 312 It opens, rotates the earthing switch operating shaft 1 using the workpiece, open the circuit device room door and cable chamber door, and by institute Sliding part 33 is stated to lift upwards so that described resiliently return at the through-hole 311, the relatively described through-hole 311 of elastomer block 34 to Outer protrusion.

In hands injured, the process of the power failure operation of breaker chamber are as follows: first by breaker open operation, then operate the handcart Operation worm screw 45 shakes the circuit breaker cart 4 to testing position from operating position, then the earthing switch closes a floodgate, finally Open the circuit breaker chamber door maintenance；The process of power transmission operation are as follows: first close the circuit breaker chamber door, then open the ground connection Separating brake is closed, the circuit breaker cart 4 is then moved on into operating position from testing position, finally by the breaker closing.

As shown in fig. 6, the handcart interlocking mechanism include connect with earthing switch operating shaft 1, can be by the earthing switch The torque of operating shaft 1 passes to the drive mechanism 6 of circuit breaker cart 4, connect with the drive mechanism 6, prevents the breaker Handcart 4 is extracted the locking structure of the breaker chamber in grounding switch tripping, with locking structure linkage, prevents in institute It states when earthing switch closes a floodgate and operates the limiting structure of the circuit breaker cart 4, and prevent circuit breaker cart 4 not in testing position The location structure that the earthing switch closes a floodgate.

In the present embodiment, the circuit breaker cart 4, which is additionally provided with, can prevent the circuit breaker cart 4 from the breaker The connect-disconnect structure that room slips；Specifically, the connect-disconnect structure include the two sides for being separately positioned on handcart operation worm screw 45, can Opposite the first locking plate 41 and the second locking plate 43 being slidably connected is separately formed in the hands injured side wall, for described the The first locking hole 49 and the second locking hole of one locking plate 41 and the insertion of the second locking plate 43, and be respectively used to keep described first The shape that locking plate 41 is inserted into the state of first locking hole 49, second locking plate 43 is kept to be inserted into second locking hole The first return unit and the second return unit of state；By first locking plate 41 and the second locking plate 43 mutually in pull, described first Locking plate 41 and the second locking plate 43 are detached from first locking hole 49 and the second locking hole, 4 energy of circuit breaker cart respectively It is drawn out the breaker chamber, decontrols first locking plate 41 and the second locking plate 43, first locking plate 41 and second Locking plate 43 will be returned to reset condition under the action of the first return unit and the second return unit, i.e., by the circuit breaker cart 4 are put into the breaker chamber, and first locking plate 41 and the second locking plate 43 can be automatically inserted into first locking hole 49 With the second locking hole.

As shown in fig. 7, the drive mechanism 6 includes the rocking bar 61 for rotating and swinging with the earthing switch operating shaft 1, The joint arm 62 rotated under the action of the rocking bar 61 is fixedly connected and with the joint arm 62 rotation with the joint arm 62 Swingle 63, and the driving cam 64 being connected at the position of the opposite third locking plate 46 of the swingle 63；Biography described above Dynamic structure can accurately the movement of the earthing switch operating shaft 1 be transmitted to the circuit breaker cart 4, guarantee the earthing switch The interlocking of operating shaft 1 and the circuit breaker cart 4；The rocking bar 61 is by being fixed on the rocking bar of the earthing switch operating shaft 1 Cam 65 is fixed on the earthing switch operating shaft 1；The swingle 63 is by being installed on the bracket 66 of the circuit breaker cart 4 The side of the circuit breaker cart 4 is set, and the swingle 63 is passed through from two stabilizer blades of the bracket 66, the bracket 66 It is fixed by bolts in the circuit breaker cart 4.

Above-mentioned drive mechanism is described to shake when the earthing switch operating shaft 1 rotates the progress earthing switch on/off switch Bar 61 is swung up and down with the earthing switch operating shaft 1, and the rocking bar 61 drives the joint arm 62 to rotate, and the joint arm 62 drives The swingle 63 rotates, so that the driving cam 64 rotates；When the earthing switch closes a floodgate, the driving cam 64 act on the third locking plate 46, and the third locking plate 46 inwardly bounces back, when the grounding switch tripping, the biography Moving cam 64 is not connect with the third locking plate 46, and the third locking plate 46 is motionless；Drive mechanism described above can be accurate The torque of the earthing switch operating shaft 1 be transmitted to the circuit breaker cart 4, guarantee the earthing switch operating shaft 1 and institute State the interlocking of circuit breaker cart 4.

In addition, the cross section of the earthing switch operating shaft 1 be hexagon, the rocker cam 65 form with it is described Hexagon ring of the earthing switch operating shaft 1 to adaptation.

In the present embodiment, connection structure, the connection structure packet are provided between the rocking bar 61 and the joint arm 62 Include and take shape in the slide opening 611 that the rocking bar connect one end, oblong with the joint arm 62, and take shape in 62 end of joint arm, The cunning convex 621 that can be slided in the slide opening 611；Above-mentioned connection structure can be played the rotation of the earthing switch operating shaft 1 Torque and the rotation torque of the joint arm 62 be connected and the effect of transition.

In addition, the junction of the joint arm 62 and the swingle 63 forms and can increase the joint arm 62 and the rotation The boss 622 of the connection area of bar 63；Above structure can increase the joint arm 62 be fixedly connected with the swingle 63 it is reliable Property.

As shown in Figure 7 and Figure 8, the locking structure includes that the handcart of opposite circuit breaker cart 4 operates worm screw 45 slidably The third locking plate 46 of connection, the driving cam setting of opposite drive mechanism takes shape in breaker chamber side wall, locks with the third Only plate 46 is adapted to the third locking hole 47 of grafting, and the connection third locking plate 46 and breaker chamber side wall, make it is described Third locking plate 46 is plugged in the third return unit of the third locking hole 47；When the grounding switch tripping, the third lock Only plate 46 is inserted into the third locking hole 47 under the action of third return unit, when the earthing switch closes a floodgate, the third Locking plate 56 is detached from the third locking hole 47 under the action of driving cam 65.

Above-mentioned locking structure utilizes the third locking plate 46, third locking hole 47 and third return unit by the breaker Handcart 4 is locked in the breaker chamber, and the third locking plate 46 is inserted into described under the action of the third return unit In third locking hole 47；When the earthing switch closes a floodgate, the connect-disconnect structure is not locked by the locking structure, is pulled to the left First locking plate 41 and the second locking plate 43, the circuit breaker cart 4 can unlock, and pull out the circuit breaker cart 4 extract the circuit breaker cart 4 out the breaker chamber；When the grounding switch tripping, the connect-disconnect structure is by the lock Only structure latches, can not pull first locking plate 41 and the second locking plate 43 to the left, and the circuit breaker cart 4 cannot be drawn The breaker chamber out；The locking structure ensure that and only could draw the circuit breaker cart 4 after earthing switch combined floodgate The breaker chamber out, securely and reliably.

The third locking plate 46 is arranged side by side with first locking plate 41.

As shown in Fig. 6, Figure 11 and Figure 14, the limiting structure includes taking shape in handcart operation worm screw 45 and described the The limiting groove 451 of three locking plates, 46 junction takes shape in the third locking plate 46, allows the handcart operation worm screw 45 at it First handle hole 461 of interior rotation process, and to moving to left under the action of the third locking plate 46 is in driving cam 64 Cooperate, limit the first limiting holes 462 of handcart operation 45 rotation process of worm screw when dynamic with the limiting groove 451；It is described to connect When ground switch is in gate-dividing state, the locking structure locking, the third locking plate 46 is inserted in the third locking hole 47, The limiting groove 451 is located in first handle hole 461, and the handcart operation worm screw 45 is able to rotate, at the earthing switch When "on" position, the driving cam 64 unlocks the locking structure, and the third locking plate 46 is in the handcart It is mobile to operate worm screw 45, the limiting groove 451 enters in first limiting holes 462, and the handcart operation worm screw 45 can not turn It is dynamic.

In the present embodiment, as shown in Figures 12 and 13, first locking plate 41 and the second locking plate 43 are operated with handcart Worm screw connection position at be provided with in the limiting structure first handle hole 461 and the first limiting holes it is corresponding First circular hole 413 and the second limiting holes 414, the second circular hole 433 and third limiting holes 434.

The location structure includes that can protrude outward under the action of circuit breaker cart 4, in the work of the 4th return unit With the lower positioning pin 44 inwardly replied, take shape in the third locking plate 46 and 44 junction of positioning pin, allow it is described fixed Second handle hole 463 of the relatively described disengaging of third locking plate 46 movement of position pin 44, and in the positioning pin 44 and the open circuit Device handcart 4 is allowed the third locking plate 46 to be moved to the left, is not connected with the circuit breaker cart 4 in the positioning pin 44 when offseting The third handle hole 464 for preventing the third locking plate 46 to be moved to the left when connecing；The relatively described breaker hand of the positioning pin 44 It is moved inside and outside vehicle 4.

In above-mentioned location structure, the positioning pin 44, the 4th return unit, circuit breaker cart 4 and third locking plate 46 it Between mutual cooperation, when the circuit breaker cart 4 is located at operating position, the circuit breaker cart 4 not with the positioning pin 44 Connection, at this point, the positioning pin 44, which is inserted into second handle hole 463 under the action of four return unit, limits institute It states third locking plate 46 to be moved to the left, the earthing switch can not close a floodgate；When the circuit breaker cart 4 is in testing position, institute It states positioning pin 44 and when the circuit breaker cart 4 offsets, the positioning pin 44 is protruded outward, and the driving cam 64 can make described Third locking plate 46 is mobile；The circuit breaker cart 4 not in testing position, the positioning pin 44 not with the circuit breaker cart 4 contacts, are inwardly returned to nature under the action of four return unit, so that the third locking plate 46 can not move It is dynamic.

Said structure design is ingenious, securely and reliably, guarantees the circuit breaker cart 4 at operating position, the ground connection is opened Pass cannot close a floodgate, and prevent maloperation.

As shown in Figure 10 and Figure 11, the positioning pin 44 is multiple including the 4th can be connect, be provided with the circuit breaker cart 4 The first part 441 of position part, is connected to one end far from the circuit breaker cart 4 of the first part 441, can be described second The second part 442 moved in handle hole 463, and one of the second part 442 far from the first part 441 is set The Part III 443 held, can prevent the positioning pin 44 from deviating from the third locking plate 46；4th return unit can prevent institute It states to deviate from when positioning pin 44 protrudes outward from the second handle hole 463, i.e. the 4th return unit, which both plays, replys the positioning pin 44 Effect, and play the role of preventing from falling off, under the action of the 4th return unit and Part III 443, the positioning pin 44 are fixed on the third locking plate 36.

The first part 441 of above structure can be between second handle hole 463 and third handle hole 464 freely Switching, when the positioning pin 44 protrudes outward, the first part 441 enters second handle hole 463, at this point, described Third locking plate 46 can be moved to the left；The second part 442 is adapted to second handle hole 463, when described second Points 442 when being inserted into second handle hole 463, and the positioning pin 44 not can enter the third handle hole 464, the third Locking plate 46 cannot be moved to the left；It is described fixed that the Part III 443 can prevent the positioning pin 44 from preventing in inside reply Position pin 44 deviates from second handle hole 463；Above-mentioned positioning pin under the action of the circuit breaker cart 4 and four return units, By the first part 441 and second part 442 in the conversion of second handle hole 463, enable the positioning pin 44 The movement of the third locking plate 46 is limited, so that the circuit breaker cart 4 and the earthing switch generate interlocking.

As shown in Figure 12 and Figure 13, the positioning pin 44 is arranged in first locking plate 41, second locking plate 43 With the junction of the third locking plate 46, first locking plate 41 is provided with second suitable for the receiving positioning pin 44 Divide 442 the 4th handle hole 411 and limits the 5th handle hole 412 of the movement of the first locking plate 41, second locking plate 43 are provided with the 6th handle hole 431 of the second part 442 for being suitable for accommodating the positioning pin 44 and limit second locking plate 43 the 7th mobile handle holes 432.

Above structure can make first locking plate 41, the second locking plate 43 generate interlocking with the earthing switch, work as institute When stating the unlock of third locking plate 46, first locking plate 41 and the second locking plate 43 are also unlocked, and inwardly pull first lock Only plate 41 and the second locking plate 43, the first part 441 of the positioning pin 44 is from the described 4th on first locking plate 41 Handle hole 411 enters the 5th handle hole 412, enters described the from the 6th handle hole 431 of second locking plate 43 Seven handle holes 432；When the third locking plate 46 is limited, the second part 442 of the positioning pin 44 also inserts simultaneously In the 4th handle hole 411 and the 6th handle hole 431, so that first locking plate 41 and the second locking plate 46 are also limited System；In this way, when the circuit breaker cart 4 is located at operating position, first locking plate 41 and the second locking plate 43 cannot be to Interior sliding can not extract the circuit breaker cart 4 out breaker chamber, ensure that the safety operation of the hands injured.

As shown in figs. 5 and 9, the driving cam 64 and the operation that the earthing switch operating shaft 1 can be opened and closed Barrier structure is provided between the sliding part 33 of mouth 312, the barrier structure and the third locking plate 46 cooperate, described disconnected When road device handcart 4 is not moved to testing position, the barrier structure can stop 33 slide downward of sliding part to expose the behaviour Make mouth 312；The barrier structure includes the countercheck rod 641 that is set to the driving cam 64, can connect with the sliding part 33； The countercheck rod 641 is arranged in the driving cam 64 and is in when naturally drooping state close to the side of the sliding part 33.

Above-mentioned barrier structure prevents the sliding using the countercheck rod 641 on the third locking plate 46 and driving cam 64 The slide downward when the circuit breaker cart 4 is in testing position of part 33, so that the behaviour for operating the earthing switch operating shaft 1 Make the exposing of mouth 312, when the circuit breaker cart 4 is not moved to testing position from operating position, i.e., the described earthing switch, which is in, to be divided Lock state, the third locking plate 46 are locked by the location structure, and the third locking plate 46 can not move, at this point, downwards The sliding part 33 is pressed, the countercheck rod 641 is connect with the sliding part 33, and the driving cam 64 is far from the countercheck rod 641 one end offsets with the third locking plate 46, and the third locking plate 46 prevents the driving cam 64 from continuing to rotate, and makes The sliding part 33 also can not slide downward, and then the operation port 312 can not be opened, and the earthing switch conjunction can not be carried out Lock；Above structure guarantee only when the circuit breaker cart 4 is shaken to testing position could operational grounding switch operating shaft 1 into The combined floodgate of the row earthing switch.

In addition, being provided with hand handle 42 on first locking plate 41 and the second locking plate 43；Above structure be for the ease of It holds and operates first locking plate 41 and the second locking plate 43.

The outside of first locking plate 41 is arranged in the third locking plate 46；The third locking plate 46 is relatively described It is provided at the hand handle 42 of first locking plate 41 suitable for the movable loose slot 48 of the hand handle 42；Particularly, the activity The length dimension of slot 48 is not less than the moving distance size of first locking plate 41, described when locking structure locking Hand handle 42 is located at one end close to handcart operation worm screw 45 of the loose slot 48, and the hand handle 42 is without handcart described in normal direction It operates worm screw 45 to pull, when locking structure unlock, the hand handle 42 is located at the separate handcart of the loose slot 48 One end of worm screw 45 is operated, the hand handle 42 can operate worm screw 45 to the handcart and pull；The hand handle 42 described in this way can with it is described Locking structure cooperation.

One end that the third locking plate 46 is connect with the driving cam 64 is formed to be cooperated with the driving cam 64 Inclined-plane；Above structure is to act on the third locking plate 46 for convenience of the driving cam 64.

The working principle of the handcart interlocking mechanism is as follows:

The circuit breaker cart 4 is moved to the testing position from the operating position, described in the location structure Positioning pin 44 protrudes outward second handle hole 463 under the action of circuit breaker cart 4, and the third locking plate 46 solves Lock is removable, at this point, the third locking plate 46 can not withstand the driving cam 64, presses down on the sliding part 33, institute It states sliding part 33 to move down, exposes the operation port 312, the earthing switch is closed in the rotation of earthing switch operating shaft 1 When lock, the rocking bar 61 of the drive mechanism 6 in the handcart interlocking mechanism can also be rotated with it, to drive the rotation Bull stick 63 rotates, so that the third in the driving cam 64 being connected on the swingle 63 and the locking structure Locking plate 46 offsets, and the third locking plate 46 is pushed to handcart operation 45 direction of worm screw, the third locking plate The 46 abjection third locking holes 47, in this way, inwardly pulling first locking plate 41 and 43 energy of the second locking plate will be described Circuit breaker cart 4 extracts the breaker chamber out, meanwhile, first limiting holes 462 are also mobile to handcart operation worm screw 45, The limiting groove 451 is entered in first limiting holes 462 by first handle hole 461, and the handcart operates 45 quilt of worm screw Locking, can not rotate；When the rotation of earthing switch operating shaft 1 is by the grounding switch tripping, the rocking bar 61 is rotated, and drives The driving cam 64 on the swingle 63 and the swingle 63 rotates, the driving cam 64 away from keyboard described the Three locking plates 46 do not offset with the third locking plate 46, and the third locking plate 46 moves under the action of third return unit, It is inserted into the third locking hole 47, meanwhile, the positioning pin 44 is inwardly returned under the action of four return unit Nature, the third locking plate 46 is locked, and first locking plate 41 and the second locking plate 43 cannot be pulled inwardly, then The circuit breaker cart 4 can not be extracted the breaker chamber, meanwhile, the limiting groove 451 of the handcart operation worm screw 45 Entered in first handle hole 461 by first limiting holes 462, rotating the handcart operation worm screw 45 can state described Circuit breaker cart 4 moves on to operating position from testing position, and the driving cam 64 is under the cooperation of the third locking plate 46, The countercheck rod 641 of the driving cam 64 can prevent 33 slide downward of sliding part that the operation port 312 is exposed, In the circuit breaker cart 4 not in the testing position, the sliding part 33. can not be slided

Above-mentioned handcart interlocking mechanism is safe and reliable, by the cooperation between multiple structures, can effectively prevent described disconnected When road device handcart 4 does not reach testing position, the earthing switch operating shaft 1 closes a floodgate to earthing switch, and can prevent in institute When stating earthing switch combined floodgate, operates the mobile circuit breaker cart 4 of handcart operation worm screw 45 and carry out breaker closing, and When preventing the grounding switch tripping, the circuit breaker cart 4 can be pulled out the breaker chamber.

As shown in figure 15, in the present embodiment, energy is provided between the earthing switch operating shaft 1 and the cable chamber door The cable vault's locking structure 5 that can be simultaneously locked the cable chamber door in the grounding switch tripping, cable vault's locking Structure 5 includes the Rocker arm 51 rotated with the earthing switch operating shaft 1, and swings, forms and be fixed on the Rocker arm 51 The Rocker arm 51 for the hook that the cross bar 54 of the cable chamber door connects, the cross bar 54 are fixed on the cable vault by fixed plate 55 Men Shang；The Rocker arm 51 is connected to the earthing switch operating shaft 1 by rocker cam 52, and the Rocker arm 51 is opened with the ground connection Operating shaft 1 is closed to swing up and down.

In addition, in the present embodiment, first return unit, the second return unit, third return unit and the 4th return unit are Tension spring, first resilient bias and the second resilient bias are pressure spring.

The working principle of the five-prevention interlocking device is as follows:

When carrying out enabling maintenance to the hands injured, the circuit breaker chamber door, cable chamber door and back door are in closing shape State, at this point, the front gate interlocking mechanism 3 unlocks, first position limiting structure 21 of the rear door interlocking mechanism 2 is also unlocked, first First to breaker open operation, using the operation worm screw 45 of handcart described in the workpiece rotation by the circuit breaker cart 4 from operating position It is moved to testing position, at this point, the location structure of the circuit breaker cart 4 unlocks, the third locking plate 46 is allowed to move Dynamic, the barrier structure also unlocks, and the countercheck rod 641 allows the sliding part 33 mobile, then presses the handle 332, 33 slide downward of sliding part, exposes the operation port 312, and the earthing switch operating shaft 1 in rotation process mouth 312 is connect Ground switch closes a floodgate, at this point, the drive mechanism 6 pushes the third locking plate 46 mobile to handcart operation worm screw 45, takes off From the third locking hole 47, the connect-disconnect structure unlock holds the hand handle 42 to centre and pulls first locking plate 41 The circuit breaker cart 4 can pull out to the breaker chamber with the second locking plate 43, while the limiting structure is by the hand Vehicle operates worm screw 45 and locks, and the handcart operation worm screw 45 can not be rotated, and then, opens the circuit breaker chamber door, cable Room door and back door are overhauled, and the sliding part 33 is slid up shifting and is returned to initial position, and the elastomer block is led to from described Hole protrusion, the sliding part 33 cover the operation port 312.

After the completion of maintenance, it is first shut off the circuit breaker chamber door, cable chamber door and back door, the front gate interlocking mechanism 3 solves Lock, first position limiting structure 21 of the rear door interlocking mechanism 2 also unlock, and then, press the handle 332, the sliding 33 slide downward of part exposes the operation port 312, and the earthing switch operating shaft 1 in rotation process mouth 312 carries out earthing switch point Lock, and the sliding part 33 is resetted, at this point, the drive mechanism 6 in the handcart interlocking mechanism temporarily with the locking Structure separation, the third locking plate 46 are inserted into the third locking hole 47, and the connect-disconnect structure is locked by the locking structure Fixed, the circuit breaker cart 4 can not be pulled out breaker chamber, while the limiting structure solves handcart operation worm screw 45 Lock enables the handcart operation worm screw 45 to rotate, and then, worm screw 45 is operated using handcart described in workpiece rotation, by the open circuit Device handcart 4 shakes from testing position to operating position, meanwhile, the location structure in the handcart interlocking mechanism inwardly replys lock Fixed, the third locking plate is immovable, and the countercheck rod 641 can stop 33 slide downward of sliding part, finally, carrying out institute State breaker closing.

Above-mentioned five-prevention interlocking device using the front gate interlocking mechanism, rear door interlocking mechanism and handcart interlocking mechanism respectively with Interaction relation occurs for the earthing switch operating shaft, so that the circuit breaker chamber door, cable chamber door and back door are turned off under state The earthing switch operating shaft 1 could be operated, separating brake and combined floodgate are carried out to the earthing switch, the circuit breaker cart 4 is in examination When testing position could operational grounding switch operating shaft close a floodgate to the earthing switch and extract the circuit breaker cart 4 out The breaker chamber, and the earthing switch close a floodgate after can not shake circuit breaker cart 4 into operating position, it is anti-to reach five It is required that substantially increasing the security performance of hands injured.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims (11)

1. a kind of handcart interlocking mechanism of five-prevention interlocking device, which is characterized in that including being connect with earthing switch operating shaft (1), The drive mechanism (6) that the torque of the earthing switch operating shaft can be passed to circuit breaker cart (4), with the drive mechanism (6) locking structure for connecting, the circuit breaker cart (4) being prevented to be extracted breaker chamber in grounding switch tripping, with described Locking structure linkage prevents from operating the limiting structure of the circuit breaker cart (4) when the earthing switch closes a floodgate, and prevents from breaking Road device handcart (4) location structure that the earthing switch closes a floodgate not in testing position.

2. the handcart interlocking mechanism of five-prevention interlocking device according to claim 1, which is characterized in that the drive mechanism (6) include the rocking bar (61) for rotating and swinging with the earthing switch operating shaft (1), carried out under the action of the rocking bar (61) The joint arm (62) of rotation is fixedly connected and with the swingle (63) that the joint arm (62) rotate, and connection with the joint arm (62) Driving cam (64) at the position of the swingle (63) with respect to third locking plate (46).

3. the handcart interlocking mechanism of five-prevention interlocking device according to claim 2, which is characterized in that the locking structure packet The driving cam (64) of handcart operation worm screw (45) slidable connection, opposite drive mechanism for including opposite circuit breaker cart (4) is set The third locking plate (46) set takes shape in breaker chamber side wall, is adapted to the third locking of grafting with the third locking plate (46) Hole (47), and connect the third locking plate (46) and breaker chamber side wall, the third locking plate (46) is plugged in The third return unit of the third locking hole (47).

4. the handcart interlocking mechanism of five-prevention interlocking device according to claim 3, which is characterized in that the limiting structure packet The limiting groove (451) for taking shape in handcart operation worm screw (45) and third locking plate (46) junction is included, institute is taken shape in The first handle hole (461) stated third locking plate (46), allow handcart operation worm screw (45) rotation process in it, and Cooperate when the third locking plate (46) is moved to the left under the action of the driving cam (64) with the limiting groove (451), Limit first limiting holes (462) of described handcart operation worm screw (45) rotation process.

5. the handcart interlocking mechanism of five-prevention interlocking device according to claim 3, which is characterized in that the location structure packet Include the positioning pin that can be protruded outward, inwardly reply under the action of four return units under the action of the circuit breaker cart (4) (44), the third locking plate (46) and the positioning pin (44) junction are taken shape in, allows the positioning pin (44) with respect to institute The second handle hole (463) of third locking plate (46) disengaging movement is stated, and in the positioning pin (44) and the circuit breaker cart (4) the third locking plate (46) is allowed to be moved to the left when offseting, the positioning pin (44) not with the circuit breaker cart (4) The third handle hole (464) for preventing the third locking plate (46) to be moved to the left when connection.

6. the handcart interlocking mechanism of five-prevention interlocking device according to claim 5, which is characterized in that the drive mechanism (6) having between the driving cam (64) and sliding part (33) can prevent the earthing switch in the circuit breaker cart (4) barrier structure to close a floodgate when not reaching testing position.

7. the handcart interlocking mechanism of five-prevention interlocking device according to claim 6, which is characterized in that the barrier structure packet Include the countercheck rod (641) that is set to the driving cam (64), can connect with the upper wall of the sliding part (33)；The countercheck rod (641) sliding part (33) sliding is limited under the cooperation of the third locking plate (46).

8. the handcart interlocking mechanism of five-prevention interlocking device according to claim 4, which is characterized in that the circuit breaker cart (4) circuit breaker cart (4) can be fixed on the indoor plug knot of the breaker by being provided between the breaker chamber Structure.

9. the handcart interlocking mechanism of five-prevention interlocking device according to claim 8, which is characterized in that the connect-disconnect structure packet The first locking plate (41) and the second locking plate (43) for being slidably connected to handcart operation worm screw (45) two sides respectively are included, respectively Take shape at the position of relatively described first locking plate of the breaker chamber inner wall and the second locking plate, with first locking plate With the first locking hole and the second locking hole of the cooperation of the second locking plate, first locking plate is kept under the effect of the first return unit It is inserted into the state of first locking hole, second locking plate keeps being inserted into second locking under the effect of the second return unit The state in hole；By first locking plate (41) and the second locking plate (43) mutually in pull so that first locking plate and the Two locking plates are detached from first locking hole and the second locking hole respectively, and the circuit breaker cart (4) can be drawn out the open circuit Device room.

10. the handcart interlocking mechanism of five-prevention interlocking device according to claim 9, which is characterized in that first locking The hand handle (42) for grasping is provided on plate (41) and the second locking plate (43).

11. the handcart interlocking mechanism of five-prevention interlocking device according to claim 10, which is characterized in that the third locking The loose slot (48) mobile suitable for the hand handle (42) is formed on plate (46).