CN208539437U

CN208539437U - A kind of five-prevention interlocking device and the hands injured with it

Info

Publication number: CN208539437U
Application number: CN201821457789.3U
Authority: CN
Inventors: 金旭; 布庆春; 陈乐静; 陈孟列
Original assignee: Huayi Electric Apparatus Group
Current assignee: Huayi Electric Apparatus Group
Priority date: 2018-09-06
Filing date: 2018-09-06
Publication date: 2019-02-22
Anticipated expiration: 2028-09-06

Abstract

The utility model discloses a kind of five-prevention interlocking device and with its hands injured, including earthing switch operating shaft；Rear door interlocking mechanism prevents back door in the on-state can operational grounding switch operating shaft；Front gate interlocking mechanism；For opening and closing the operation port of energy operational grounding switch operating shaft；Handcart interlocking mechanism, connection circuit breaker cart and earthing switch operating shaft when circuit breaker cart being made be in testing position could operational grounding switch operating shaft progress earthing switch combined floodgate, and lock circuit breaker cart when earthing switch combined floodgate；In above-mentioned interlock, circuit breaker chamber door, cable chamber door and back door is needed to be turned off ability operational grounding switch operating shaft division earthing switch under state, circuit breaker cart when being in testing position could operational grounding switch operating shaft close a floodgate to earthing switch and extract circuit breaker cart out breaker chamber, and earthing switch can not shake circuit breaker cart after closing a floodgate and enter operating position, reach five anti-requirements, securely and reliably.

Description

A kind of five-prevention interlocking device and the hands injured with it

Technical field

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

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 operation of high voltage cabinet on trolley To accomplish " five is anti-" in the process: 1, after closing at the test position, circuit breaker cart cannot be introduced into work to the breaker in switchgear Position；2, at the time of apposition, breaker can not be into combined floodgate for the earthing in switchgear；3, the breaker in switchgear is in combined floodgate work When, the machinery on the earthing of disk cabinet back door is latched with cabinet door；4, the vacuum circuit breaker in switchgear closes a floodgate at work, splice grafting Earthing knife-switch can not be put into；5, the breaker in switchgear when working and closing operation, can not exit the operating position of circuit breaker cart.

Chinese patent literature CN104025230B discloses the mechanical connection between a kind of cable chamber door, back door and earthing switch Locking device, including back door locking device, for locking the back door of Air-insulated electric equipment；Rear axle resigning component, for being mentioned to rear axle For space；Intermediate load transfer device, the active force for closing back door are sent to unlock pin；And unlock pin control device, it uses In the locking and unlocking for controlling the unlock pin；After back door locking device includes the back door lock hook on rear outer shaft and is located at Back door lock slots on door, back door lock hook and the interaction of back door lock slots, to lock back door.

Above-mentioned interlock can realize the cable chamber door of hands injured and the linkage at back door, it is ensured that the hand when earthing switch disconnects The cable chamber door of vehicle cabinet and back door cannot be opened, and also ensuring only just can operational grounding when cable chamber door and back door are turned off Switch；But there is no interlock between the circuit breaker chamber door and earthing switch of hands injured, between circuit breaker cart and earthing switch, So that circuit breaker chamber door in the open state can also operational grounding switch, and when breaker closing also can operational grounding switch close Lock, in use, maintenance, maintenance, there are great security risks, it is possible to and it touches electrification position and causes the accident, safety coefficient It is low.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome circuit breaker chamber door in the prior art when opening Can also operational grounding switch defect, to provide a kind of satisfaction five anti-requirements, safe and reliable five-prevention interlocking device.

Further, the utility model provides the hands injured with above-mentioned five-prevention interlocking device.

A kind of five-prevention interlocking device, including

Earthing switch operating shaft, can by it is positive, rotate backward so that earthing switch switch closing and switch opening；

Rear door interlocking mechanism, the earthing switch operating shaft is positive, under counter-rotational control, drive back door unlock or Person's locking, and limit and be just able to rotate the earthing switch operating shaft under the back door blocking to earthing switch combined floodgate；

Front gate interlocking mechanism is connect with circuit breaker chamber door and cable chamber door, passes through opening for circuit breaker chamber door and cable chamber door It opens and closes and closes to control the unlatching and closure of the operation port for operating the earthing switch operating shaft；

Handcart interlocking mechanism, connection circuit breaker cart and the earthing switch operating shaft pass through positioning circuit breaker cart Position operates the operation of worm screw to control earthing switch operating shaft and handcart, when so that the circuit breaker cart being in testing position The combined floodgate of the earthing switch could be completed, and locks the circuit breaker cart.

The rear door interlocking mechanism includes with earthing switch operating shaft rotation, can lock the locking knot at the back door Structure, and the first position limiting structure that is mobile, allowing earthing switch operating shaft to rotate that can offset with the back door.

The locking structure includes the earthing switch operating shaft being arranged in close to the latch hook of described back door one end, and fix At the back door, the lockplate hooked suitable for the latch hook.

First position limiting structure includes that the earthing switch operating shaft is arranged in close to the bracket at the back door, through solid Fixed the first gag lever post on the bracket, can be under the action of the first resilient bias and back door on first gag lever post The second gag lever post that is mobile and forming limiting slot, setting in the earthing switch operating shaft, can be when back door be closed and institute State the position-limited wheel that limiting slot alignment passes through the limiting slot.

The front gate interlocking mechanism includes being arranged on the cabinet wall of the hands injured, having for operational grounding switch operation The first baffle of the operation port of axis and the first baffle cooperatively form the second baffle of accommodation space, are slidably set to institute It states in accommodation space, the sliding part of the operation port can be turned on or off, and the positioning circuit breaker chamber door and electricity can be passed through The state of cable room door controls the second position limiting structure of sliding part sliding；The circuit breaker chamber door and cable chamber door are turned off Shi Caineng slides the sliding part, and then opens the operation port.

Second position limiting structure can position the third position limiting structure of the state of the circuit breaker chamber door and cable chamber door, and Cooperate, limit the 4th position limiting structure of the sliding part sliding with the third position limiting structure.

The third position limiting structure include take shape in the first baffle, respectively with the circuit breaker chamber door and cable chamber door Opposite through-hole, an elastomer block being limited on the second baffle passes through the sliding part and connect with the through-hole, described Elastomer block relatively described through-hole under the action of front door and the second resilient bias inwardly bounces back or inside and outside protrusion.

The limited block that 4th position limiting structure includes the side for taking shape in the elastomer block, connect with the sliding part, With the track for taking shape in the sliding part sidewall, being inserted into suitable for the limited block and being moved in it.

The handcart interlocking mechanism include with earthing switch operation axis connection, can be by the torque of the earthing switch operating shaft The drive mechanism for passing to circuit breaker cart connect with the drive mechanism, prevents the circuit breaker cart in earthing switch point It is extracted the locking structure of the breaker chamber when lock, with locking structure linkage, prevents when the earthing switch closes a floodgate Operate the limiting structure of the circuit breaker cart, and prevent circuit breaker cart not in testing position the earthing switch closes a floodgate Location structure.

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 earthing switch operating shaft with it is described Cable chamber door bracket is provided with the cable vault's locking structure for locking the cable chamber door, and cable vault's locking structure includes with institute The rocker arm of earthing switch operating shaft rotation is stated, and swung with the rocker arm, formed and connect with the cross bar of the cable chamber door The hanger plate of hook.

The utility model provides a kind of hands injured simultaneously, including the five-prevention interlocking device provided in the utility model.

Technical solutions of the utility model have the advantages that

1. five-prevention interlocking device provided by the utility model, including earthing switch operating shaft, rear door interlocking mechanism, for locking Determine back door, prevents back door in the on-state can operational grounding switch operating shaft；Front gate interlocking mechanism, setting circuit breaker chamber door and Between cable chamber door, for opening and closing the operation port of energy operational grounding switch operating shaft, so that earthing switch operating shaft exists Circuit breaker chamber door and cable chamber door just can be carried out operation when closing；Handcart interlocking mechanism connects circuit breaker cart and earthing switch Operating shaft when circuit breaker cart being made to be in testing position could operational grounding switch operating shaft carry out the combined floodgate of earthing switch, and And circuit breaker cart is locked when earthing switch combined floodgate；In above-mentioned interlock, using front gate interlocking mechanism, rear door interlocking mechanism and With earthing switch operating shaft interaction relation occurs for handcart interlocking mechanism respectively, so that circuit breaker chamber door, cable chamber door and back door are equal Ability operational grounding switchs operating shaft division earthing switch under closed state, and circuit breaker cart could operate when being in testing position Earthing switch operating shaft closes a floodgate to earthing switch and extracts circuit breaker cart out breaker chamber, and nothing after earthing switch combined floodgate Method shakes circuit breaker cart and enters operating position, reaches five anti-requirements, substantially increases the security performance of hands injured.

2. five-prevention interlocking device provided by the utility model, rear door interlocking mechanism includes turning with earthing switch operating shaft It moves, the locking structure at back door can be locked, and the first limit knot that is mobile, allowing earthing switch operating shaft to rotate that can offset with back door Structure；Above-mentioned rear door interlocking mechanism interlocks back door and earthing switch operating shaft, when back door is closed, earthing switch operating shaft ability It is rotated, is grounded switch and closes a floodgate, when back door is opened, can made earthing switch operating shaft that can not rotate, avoid at back door In the state of opening, grounding switch tripping is carried out, the security performance of hands injured is improved.

3. five-prevention interlocking device provided by the utility model, front gate interlocking mechanism includes the cabinet wall that hands injured is arranged in First baffle and first baffle upper, with the operation port for operational grounding switch operating shaft cooperatively form accommodation space Second baffle is slidably set in accommodation space, can be turned on or off the sliding part of operation port, and can pass through positioning respectively The state of circuit breaker chamber door and cable chamber door come control sliding part sliding the second position limiting structure；Circuit breaker chamber door and cable chamber door Sliding part could be slided when being turned off, and then opening operation mouth；Above-mentioned front-door interlocking device is able to achieve circuit breaker chamber door, cable The interlocking of room door and earthing switch guarantees to grasp in the case that circuit breaker chamber door and cable chamber door are only turned off by hands injured Make earthing switch operating shaft, carry out earthing switch divide-shut brake, if circuit breaker chamber door and cable chamber door one of them be not turned off, all It is unable to operational grounding switch operating shaft, effectively prevents maloperation, securely and reliably.

4. five-prevention interlocking device provided by the utility model, handcart interlocking mechanism includes connecting 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.

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.

Embodiment 1

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.

Embodiment 2

The present embodiment provides a kind of hands injureds, including the five-prevention interlocking device provided in embodiment 1.

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

1. a kind of five-prevention interlocking device, which is characterized in that including

Earthing switch operating shaft (1), can by it is positive, rotate backward so that earthing switch switch closing and switch opening；

Rear door interlocking mechanism (2) drives back door to unlock under earthing switch operating shaft (1) forward direction, counter-rotational control Or locking, and limit and be just able to rotate the earthing switch operating shaft (1) under the back door blocking to earthing switch combined floodgate；

Front gate interlocking mechanism (3), connect with circuit breaker chamber door and cable chamber door, passes through opening for circuit breaker chamber door and cable chamber door Conjunction is opened and closed to control the unlatching and closure of the operation port for operating the earthing switch operating shaft (1)；

Handcart interlocking mechanism, connection circuit breaker cart (4) and the earthing switch operating shaft (1), by positioning circuit breaker cart (4) position operates the operation of worm screw (45) to control earthing switch operating shaft (1) and handcart, so that the circuit breaker cart (4) combined floodgate of the earthing switch could be completed when being in testing position, and locks the circuit breaker cart (4).

2. five-prevention interlocking device according to claim 1, which is characterized in that the rear door interlocking mechanism (2) includes with institute It states earthing switch operating shaft (1) rotation and realizes the locking structure (22) that the back door is unlocked, is latched, and the back door can be positioned The first position limiting structure (21) that position, the limitation earthing switch operating shaft (1) rotate.

3. five-prevention interlocking device according to claim 2, which is characterized in that the locking structure (22) includes being arranged in institute The latch hook (221) of earthing switch operating shaft (1) close to described back door one end is stated, and is fixed on the back door, is suitable for the latch hook (221) lockplate (222) hooked.

4. five-prevention interlocking device according to claim 3, which is characterized in that first position limiting structure (21) includes setting In the earthing switch operating shaft (1) close to the bracket (211) at the back door, through the be fixed on the bracket (211) One gag lever post (213) can move up under the action of the first resilient bias (214) and back door in first gag lever post (213) The second gag lever post (212) that is dynamic and forming limiting slot (2121), is arranged on the earthing switch operating shaft (1), can be rear The position-limited wheel (215) of the limiting slot (2121) is aligned and passed through when door is closed with the limiting slot (2121).

5. five-prevention interlocking device according to claim 1, which is characterized in that the front gate interlocking mechanism includes being arranged in hand On the cabinet wall of vehicle cabinet, have for the first baffle (31) of operation port (312) of operational grounding switch operating shaft (1) and described First baffle (31) cooperatively forms the second baffle (32) of accommodation space, is slidably set in the accommodation space, can open Or the sliding part (33) of the operation port (312) is closed, and the shape of the positioning circuit breaker chamber door and cable chamber door can be passed through State come control the sliding part (33) sliding the second position limiting structure；The circuit breaker chamber door and cable chamber door could when being turned off The sliding part (33) are slided, and then open the operation port (312).

6. five-prevention interlocking device according to claim 5, which is characterized in that second position limiting structure can position described disconnected Road device room door and cable chamber door state third position limiting structure, and with the third position limiting structure cooperation, limit the sliding 4th position limiting structure of part (33) sliding.

7. five-prevention interlocking device according to claim 6, which is characterized in that the third position limiting structure includes taking shape in institute First baffle (31), the respectively through-hole (311) opposite with the circuit breaker chamber door and cable chamber door are stated, one is limited in described Elastomer block (34) on two baffles (32) passes through the sliding part (33) and connect with the through-hole (311), the elastomer block (34) The inside retraction of the relatively described through-hole (311) or inside and outside protrusion under the action of front door and the second resilient bias.

8. five-prevention interlocking device according to claim 7, which is characterized in that the 4th position limiting structure includes taking shape in institute The side for stating elastomer block (34), the limited block (341) being connect with the sliding part (33), and take shape in the sliding part (33) side Wall is suitable for the limited block (341) insertion and mobile track (331) in it.

9. five-prevention interlocking device according to claim 8, which is characterized in that the handcart interlocking mechanism includes opening with ground connection The drive mechanism (6) for closing operating shaft (1) connection, the torque of the earthing switch operating shaft capable of being passed to circuit breaker cart (4), It is connect with the drive mechanism (6), the circuit breaker cart (4) is prevented to be extracted the breaker chamber in grounding switch tripping Locking structure, with the locking structure linkage, prevent the earthing switch close a floodgate when operate the circuit breaker cart (4) Limiting structure, and prevent circuit breaker cart (4) location structure that the earthing switch closes a floodgate not in testing position.

10. five-prevention interlocking device according to claim 9, which is characterized in that including with the earthing switch operating shaft (1) The rocking bar (61) of rotation and swing, the joint arm (62) rotated under the action of the rocking bar (61), with the joint arm (62) It is fixedly connected and with the swingle (63) that the joint arm (62) rotate, and is connected to the swingle (63) with respect to third locking Driving cam (64) at the position of plate (46).

11. five-prevention interlocking device according to claim 9, which is characterized in that the locking structure includes opposite breaker The third that handcart operation worm screw (45) slidable connection of handcart (4), the driving cam (64) of opposite drive mechanism are arranged Locking plate (46) takes shape in breaker chamber side wall, is adapted to the third locking hole (47) of grafting with the third locking plate (46), with And it connects the third locking plate (46) and breaker chamber side wall, the third locking plate (46) is made to be plugged in the third lock The only third return unit of hole (47).

12. five-prevention interlocking device according to claim 10, which is characterized in that the limiting structure is described including taking shape in Handcart operates the limiting groove (451) of worm screw (45) and third locking plate (46) junction, takes shape in the third locking plate (46), allow the first handle hole (461) of handcart operation worm screw (45) rotation process in it, and in the third locking Cooperate when plate (46) is moved to the left under the action of the driving cam (64) with the limiting groove (451), limit the handcart Operate first limiting holes (462) of worm screw (45) rotation process.

13. five-prevention interlocking device according to claim 11, which is characterized in that the location structure includes can be described disconnected The positioning pin (44) protrude outward under the action of road device handcart (4), inwardly replied under the action of four return units, takes shape in institute It states third locking plate (46) and the positioning pin (44) junction, allow the relatively described third locking plate of the positioning pin (44) (46) the second handle hole (463) of disengaging movement, and allow when the positioning pin (44) offsets with the circuit breaker cart (4) The third locking plate (46) is moved to the left, prevents institute when the positioning pin (44) is not connect with the circuit breaker cart (4) State the third handle hole (464) that third locking plate (46) is moved to the left.

14. five-prevention interlocking device according to claim 11, which is characterized in that the transmission of the drive mechanism (6) Having between cam (64) and the sliding part (33) can prevent the earthing switch from not reaching examination in the circuit breaker cart (4) The barrier structure to close a floodgate when testing position.

15. five-prevention interlocking device according to claim 14, which is characterized in that the barrier structure is described including being set to Driving cam (64), the countercheck rod (641) that can be connect with the upper wall of the sliding part；The countercheck rod (641) is in the third The sliding part (33) sliding is limited under the cooperation of locking plate (46).

16. five-prevention interlocking device according to claim 1, which is characterized in that the earthing switch operating shaft (1) with it is described Cable vault's locking structure (5) that the cable chamber door is locked in the grounding switch tripping, institute are provided between cable chamber door Stating cable vault's locking structure (5) includes the rocker arm (51) rotated with the earthing switch operating shaft (1), and with the rocker arm (51) It swings, be provided with the hanger plate (53) connecting with the cross bar of the cable chamber door (54).

17. a kind of hands injured, which is characterized in that including the five-prevention interlocking device any in claim 1-12.