CN2153159Y

CN2153159Y - Improved mobile sheath switchbox

Info

Publication number: CN2153159Y
Application number: CN 93209566
Authority: CN
Inventors: 陈永生; 吴敬尧; 陈雅瑞
Original assignee: Fuzhou No1 Switch Factory
Current assignee: Fuzhou No1 Switch Factory
Priority date: 1993-04-10
Filing date: 1993-04-10
Publication date: 1994-01-12
Anticipated expiration: 2003-04-10

Abstract

The utility model relates to an improved mobile sheath switchbox. The utility model is characterized in that the circuit breaker chamber is provided with a valve automatic reset mechanism which is composed of driving rods, which comprises elastic draw rods, etc.; the grounding switch is operated by a handle and a vertical connecting rod and a crank and a draw rod, wherein, the handle is vertically arranged on the door plate of the switchbox; connections between every part adopt an assembly structure that every part is riveted and welded, and adopt a structure that bus sleeves are made to communicate with contact sleeves; all materials are flame retardant thermosetting materials; the structures of all sleeves are built-in. The utility model has the advantages that the interchangeability between handcarts is good, electric shock accidents are avoided, the driving parts of the grounding switch is fewer, the driving effect is excellent, the precision of the assembly structure is high, the rigid strength is high, and the flameproof effect is excellent.

Description

Improved mobile sheath switchbox

The utility model belongs to withdraw-type switchgear technical field, relates in particular to a kind of improvement technology of metal enclosed armouring type withdraw-type switch cabinet.

Present metal enclosed armouring type withdraw-type switchgear (as KYN-10＜F〉type switch cubicle), mainly contain relay bungalow, control room, bus-bar room, breaker chamber (or claiming the handcart chamber), cable vault and withdraw-type parts parts such as (or claiming handcart) and combine, there is following weak point in above-mentioned armouring type withdraw-type switchgear:

One, used two fan valve up and down exist when handcart and remove from breaker chamber in breaker chamber, when the attendant overhauled breaker chamber, the malfunction valve caused valve to be unlocked easily easily, so that electric shock accidents takes place, can't guarantee maintainer's personal safety.

Two, present switch cubicle product of the same type all is provided with earthed switch in the cable vault, palpus ground connection is to guarantee personal security when maintenance, but the handle that is used for the folding of control (actuating) earthed switch is installed in the position with switch cubicle door-plate plane parallel, the operating mechanism of earthed switch is positioned at the parallel plane direction of door-plate because of its handle, it is many to exist drive disk assembly, shortcomings such as inconvenient operation.

Three, present each parts of switchgear all adopt the angle steel Welding Structure, though its strength and stiffness are very high, reduce greatly owing to welding deformation makes the interchangeability of removing parts (being handcart) of switchgear.Secondly, because welding is yielding, need comparatively accurate anchor clamps for reaching required precision, the production complexity is increased, and pure Welding Structure production efficiency is also lower, condition of work is relatively poor.

Four, the bus casing in the switch cubicle bus-bar room (or comprising the cable vault) and (quiet) contact sleeve adopt thermoplastics such as Merlon, when switch cubicle (generally under short-circuit conditions) because of being subjected to thermal softening, further under the effect of mechanical force, be out of shape, easily cause major loop over the ground or phase fault, accident is enlarged further.

Drawback at above-mentioned switchgear (mainly referring to KYN4-10) existence, the purpose of this utility model is a kind of improved metal enclosed armouring type withdraw-type switch cabinet of design, makes the utility model (model of our factory has KYN4-10(F) A type etc.) in manufacturing and using, have its better characteristics (advantage) effect.

The utility model is realized by following technical proposals:

A, the valve driving member in the breaker chamber is improved, specifically being the elastic draw bar, rotary extension bar, rocker-arm extension bar and the upper and lower strut that respectively are provided with the band spring on two next doors of upper and lower valve forms linkage type valve (closing) mechanism that automatically resets according to the hinged back of order mutually.Its operating process is when pulling down the dynamic elasticity pull bar, because each rod member (or arm of force) is under the effect of (hand) power, cause valve to move up, following valve moves down, valve is opened, and after stopping firmly, elastic draw bar moves upward under the effect of spring restoring force, allow valve close automatically thereby drive each rod member action, electric shock accidents takes place in the time of so just can avoiding overhauling.

B, the operating mechanism of earthed switch has also been done improvement, the operating grip that is about to earthed switch be fitted in a perpendicular plan position approach, switch cubicle door-plate plane on, handle just can be directly made opening and closing movement by the moving contact of being docile and obedient vertical link, connecting lever and pull bar control earthed switch that preface is hinged like this, reach the saving cost, simplify the purpose of assembling.

The complete machine splicing structure that is combined by sheet metal riveted joint and shaped steel welding is adopted in the combination of c, whole each parts of switch cubicle, its specific practice is in the place (or position) with certain intervals distance or desired area, becomes the riveted joint form with piecing together joint group with (taking out the heart) steel rivet between the two layers of thin steel plate to be assembled; On the position of desired area, replenish reinforcing in addition again with Type of Welding.Adopt the switchgear of above-mentioned way form processing, the strength and stiffness of complete machine not only are protected even further enhancing are arranged, and can be convenient for assembly, have improved handcart interchangeability and have reached effect attractive in appearance.

D, the bus casing in the switch cubicle bus-bar room (or cable vault etc.) is made and general (sleeve pipe) assembly structure of (quiet) contact sleeve, its material therefor is to adopt the flame-retardant thermoset insulating material, as adopting SMC unsaturated polyester reinforced plastics (for the flame-retardant thermoset material).Also contact sleeve has been adopted internal hidden type structure in addition: promptly whole sleeve pipe is contained in (centre) the dividing plate back between breaker chamber and cable vault and the bus-bar room, make when handcart is positioned at test position like this, isolation fracture air clear distance can be greater than 125mm, " creep distance ratio " design of the parts of insulating material such as sleeve pipe is that other any switch cubicles are all inaccessiable also greater than 20mm/kv.

The phase partition of circuit breaker that switch cubicle is joined also can adopt SMC unsaturated polyester reinforced plastics in addition, makes whole switch cubicle major loop insulating material all adopt anti-flammability heat cured insulation material.

Below in conjunction with accompanying drawing embodiment concrete structure of the present utility model and operating principle are described in further detail.

Fig. 1 is the structural representation of indoor valve of the utility model switch disconnector and earthed switch driving member;

Fig. 2 is the structural representation of the riveting parts in the utility model;

Fig. 3 is the assembling schematic diagram of the interior bus casing of bus-bar room and (quiet) contact sleeve;

Wherein: the 1st, breaker chamber (also claiming the handcart chamber), valve on 2, valve guide post on 3, connecting rod on 4,5 rotary extension bars, 6 fulcrums, 7(is with spring) and elastic draw bar, 8 back-moving springs, 9 pins, the 10(spring) bearing, 11 times valve, 12 lower links, 13 times valve guide posts, 14 rocker-arm extension bars, 15 Telescopic joint rods, 16 fulcrums, 17 handles, 18 fulcrums, the 19(switch cubicle) door-plate, 20 vertical link, 21 fulcrums, 22 connecting levers, 23 pull bars, 24 interlocking devices, 25 earthed switches, 26 moving contacts, 27 fixed contacts (charged contact), 28 supporting insulators, 29 bus-bar rooms, 30 cable vaults, 31 sheet metals, 32 rivets, 33 buses, 34 bus casings, 35(is quiet) contact, 36 contact sleeve, 37 casing seats, 38 phase partitions are in the middle of the 39() dividing plate.

With reference to Fig. 1, in above-mentioned linkage type valve automatic reset mechanism, rotary extension bar 5 wherein can rotate around the fulcrum 6 that is fixed on the casing; 14 of rocker-arm extension bars rotate around fulcrum 16; end of back-moving spring 8 be located at the affixed spring fastening 10 of casing on, the other end is pressed on the pin 9 of elastic draw bar 7.The order of connection of each parts is elastic draw bars 7 that back-moving spring 8 is housed in this mechanism, its upper end is hinged with an end of rotary extension bar 5, one end of the other end of rotary extension bar 5 and last connecting rod 4 is hinged, the other end of last connecting rod 4 and last valve 2 are hinged, the lower end of elastic draw bar 7 and rocker-arm extension bar 14 are hinged; rocker-arm extension bar 14 is hinged with an end of lower link 12, and the other end of lower link 12 is hinged with following valve 11.In order to adapt to the adjusted size needs, rocker-arm extension bar 14 can be hinged by the end of expansion link 15 with lower link 12.

Continuation is with reference to Fig. 1, in the operating mechanism of earthed switch 25, be installed on the vertical plane of door-plate 19 handle 17 directly and vertical link 20 hinged, vertical link 20 with can be hinged around the connecting lever 22 that fulcrum 21 rotates, connecting lever 22 is hinged with pull bar 23, pull bar 23 is hinged with the moving contact 26 of earthed switch 25, swings up and down handle 17, and promptly may command earthed switch 25 is made opening and closing movement.

With reference to Fig. 2, the utility model is in the place of needs with sheet metal 31 riveted joints, and its location hole can guarantee the accuracy of riveting dress back physical dimension like this by high-precision numerical control press processing, and rivet 32 can adopt takes out heart steel rivet.

What be worth supplementary notes is, the interlocking device 24 that the utility model is set on the pull bar 23 of earthed switch 25, and it mainly is made up of two mobilizable blocks, and it can make handcart during to test position, accomplish that earthed switch 25 can not close a floodgate in the service position; Only after earthed switch disconnected, handcart just can be pushed into the service position.

In sum, switch cubicle of the present utility model, valve adopts the design of automatic reset mechanism, has guaranteed repair and maintenance personnel's personal safety; The earthed switch operating mechanism has drive disk assembly to be economized, and the requirement of strength of required drive link is low, the transmission efficiency advantages of higher; Switch cubicle is whole to be adopted riveted joint and welds the accuracy that structure combining can guarantee the switch cubicle structure, has improved the interchangeability of handcart greatly, and the aesthetic measure of a whole set of switchgear also increases substantially, steel using amount reduces, low cost of manufacture, production efficiency is higher, the pollution-free energy of saving again; Switch cubicle (bus-bar room) median generatrix sleeve pipe and contact sleeve are general, its material comprises that the phase partition material adopts the flame-retardant thermoset material, make all insulating material of major loop of switch cubicle be fire proofing, avoided over the ground or the further expansion accident during phase fault.Again because contact sleeve adopts internal hidden type structure, further shown other switch cubicles inaccessiable superior performance index.

Claims

1, a kind of improved armouring type withdraw-type switch cabinet, comprise that mainly relay bungalow, control room, breaker chamber 1, bus-bar room 29, cable vault's 30 assembling combination form, wherein in breaker chamber 1, can push the handcart of withdraw-type parts, also be provided with valve up and down in the breaker chamber 1, in cable vault 30, be provided with earthed switch 25, it is characterized in that:

A, two next doors of valve 2 and following valve 11 respectively are provided with by elastic draw bar 7 on breaker chamber 1, rotary extension bar 5; the linkage type valve automatic reset mechanism that rocker-arm extension bar 14 and upper and lower strut are formed according to the hinged back of mutual order; wherein rotary extension bar 5 can rotate around the fulcrum 6 that is fixed on the casing; rocker-arm extension bar 14 is around fulcrum 16 rotations; the elastic draw bar 7 of back-moving spring 8 is housed; its upper end is hinged with rotary extension bar 5; rotary extension bar 5 is hinged with last connecting rod 4 again; go up connecting rod 4 and be hinged with last valve 2 again; the lower end of elastic draw bar 7 and rocker-arm extension bar 14 are hinged; rocker-arm extension bar 14 is hinged with lower link 12 again, and lower link 12 is hinged with following valve 11 again;

The operating grip 17 of b, described earthed switch 25 be fitted in a perpendicular plan position approach, switch cubicle door-plate 19 planes on, handle 17 is directly to make opening and closing movement by the moving contact 26 of being docile and obedient vertical link 20, connecting lever 22 and pull bar 23 control earthed switches 25 that preface is hinged;

C, the assembling combination between described each parts of switch cubicle complete machine are to be the splicing structure that sheet metal is riveted and the shaped steel welding combines, and wherein riveted structure is meant that piecing together joint groups with steel rivet 32 between two layers of thin steel plate 31 that will be to be assembled on certain interval location becomes the riveted joint form;

Bus casing 34 in d, described switch cubicle bus-bar room 29 and the cable vault 30 is general assembly structure with contact sleeve 36, its material therefor is to adopt the flame-retardant thermoset insulating material, and all sleeve pipes are built in central dividing plate 39 back between breaker chamber 1 and cable vault 30 and the bus-bar room 29.

2, according to the switch cubicle of claim 1 regulation, an end that it is characterized in that back-moving spring 8 be located at the affixed bearing 10 of casing on, the other end is pressed on the pin 9 of elastic draw bar 7.

3,, it is characterized in that described rocker-arm extension bar 14 can be hinged by Telescopic joint rod 15 and lower link 12 according to the switch cubicle of claim 1 regulation.

4, according to the switch cubicle of claim 1 regulation, it is characterized in that the described fire proofing that is used for bus casing and contact sleeve can adopt SMC unsaturated polyester reinforced plastics.

5, according to the switch cubicle of claim 1 regulation, the phase partition 38 that it is characterized in that joining in the switch cubicle circuit breaker also can be an employing SMC unsaturated polyester reinforced plastics.