CN101976622B

CN101976622B - Grounding switch operating device of removable switch cabinet

Info

Publication number: CN101976622B
Application number: CN2010105326678A
Authority: CN
Inventors: 纪法清; 缪云辉; ***; 赵锦航; 徐克峰; 安立勇
Original assignee: SHANDONG LUYITONG INTELLIGENT ELECTRICAL CO Ltd
Current assignee: Shenghui Intelligent Technology Co.,Ltd.
Priority date: 2010-11-02
Filing date: 2010-11-02
Publication date: 2012-01-11
Anticipated expiration: 2030-11-02
Also published as: CN101976622A

Abstract

The invention discloses a grounding switch operating device of a removable switch cabinet, which consists of a switch operating device and a mechanical linkage device, wherein in the switch operating device, the front part of an operating shaft is movably arranged on a cabinet body, the tail part of the operating shaft is provided with a small bevel gear mashed with a big bevel gear, the big bevel gear is connected with the spindle of a grounding switch and is meshed with a linkage small bevel gear, and the linkage small bevel gear is connected with the linkage shaft of the mechanical linkage mechanism. The device has the characteristics of turning off and on the grounding switch by using bevel gear transmission, realizing the off and on of the grounding switch by simply rotating a small angle, along with capability of being used in combination with various grounding switches, safety and reliability.

Description

A kind of withdraw-type switch cabinet earthed switch operating means

Technical field

The invention belongs to armored withdraw type metal enclosed switchgear technical field, especially relate to withdraw-type switch cabinet earthed switch operating means.

Background technology

In the armored withdraw type metal enclosed switchgear of 35KV, earthed switch is a main element, and ground protection when it mainly act as overhaul of the equipments is to ensure the safety of human body and equipment; What the operating mechanism of earthed switch adopted at present is connecting rod, connecting lever actuating mode; Because the safety air clear distance between 35KV earthed switch fracture is bigger, the spacing of the dynamic and static contact of earthed switch when breaking off is also bigger, and the switch distance of closing, operating during separating brake is just long like this, therefore, is operating when the operational grounding switch and is just requiring great effort very much; And this kind mode is bad like the assembling adjustment, and operation dead point phenomenon very easily takes place, and influences the operate as normal of earthed switch.

Summary of the invention

The objective of the invention is to improve the deficiency of prior art and providing a kind of adopts bevel geared mode to carry out the branch of earthed switch, combined floodgate; Only need the less angle of rotation just can be grounded branch, the combined floodgate of switch; And can with the supporting use of multiple earthed switch, be a kind of safe and reliable withdraw-type switch cabinet earthed switch operating means.

The objective of the invention is to realize like this, a kind of withdraw-type switch cabinet earthed switch operating means is made up of switch operation device and mechanical interlocking device; Be characterized in that described switch operation device is that the operating axis front portion is movably arranged on the cabinet; Afterbody is provided with cone pinion, cone pinion and large bevel gear engagement, and large bevel gear links to each other with the main shaft of earthed switch; Large bevel gear and the engagement of interlocking cone pinion, the interlocking cone pinion is connected with the chain axle of mechanical interlocking device.

In order further to realize the object of the invention; Can be described mechanical interlocking device by cabinet before behind interlock and the cabinet interlock form, interlock is to be fixed with front limit plate and rear position margining plate in the front portion of operating axis before the cabinet, the valve bent plate is contained between cabinet and the bent plate bearing; Be fixedly connected with junction panel; Guide pad and fairlead then are contained in respectively in the chute of valve bent plate and junction panel and with cabinet and link to each other, and support is fixed on the cabinet, link to each other through extension spring between support and the junction panel; Interlock is that chain head is connected with chain axle with elastic cylindrical pin and is fixed on the cabinet through bearing behind the cabinet, and the other end insertion of chain axle is interlocked and fixed in the hole of cone pinion, is fixed with jam plate on cabinet back door or the shrouding.

In order further to realize the object of the invention; Can be in cabinet, to be provided with electric interlocking installation, this device be made up of auxiliary switch and electric-magnetic lock iron, auxiliary switch have three often open, two normally closed five groups of contacts; On the operating axis of the rear of rear position margining plate, be fixed with pressing plate; Pressing plate can contact with the action bars top of auxiliary switch through backing plate, and the upper and lower motion of action bars can realize respectively organizing the conversion of contact, and three normally opened contacts of auxiliary switch link to each other with the sub-gate circuit of breaker control circuit, the sub-gate circuit of system's control loop and the overhaul of the equipments caution demonstration of signal circuit respectively; Two normally-closed contacts of auxiliary switch link to each other with the closing circuit of breaker control circuit and the closing circuit of system's control loop respectively; Electric-magnetic lock iron links to each other with the control loop of system, and when electric-magnetic lock iron dead electricity, its iron core can block the valve bent plate.

Compared with the prior art, the present invention has the following salient features and positive effects: The present invention is determined by the switching operation of plant, machinery and electrical interlock interlock device composed, said switch operating shaft operating device is installed in the cabinet front activities on the tail with umbrella gear, umbrella gear meshing with the large bevel gear, a large bevel gear attached to the shaft with the earthing switch by turning the operating shaft driven by a small bevel gear, a large bevel gears, thus boosting the earthing switch shaft rotation, to achieve grounding switch is closed, so that only a small angle of rotation can be achieved grounding switch points, closing, so that the operator when the earthing switch operation more effort, and virtually eliminating the use of rod, Abduction arm drive mechanism, the operation is likely to cause the phenomenon of over-dead point; cabinet before and after the cabinet interlock device composed of chains, before the ark interlock is operating shaft is fixed to the front of the front and rear stopper stopper plate, valve bending and bending plate mounted in the cabinet between supports, and chain plate fixed connection, guide blocks and guide sleeve valves were installed in the curved plate and chain plate and the chute is connected with the cabinet, brackets and chain plate connected to each other through the tension spring, bracket to the cabinet, after the stopper plate in the rear of the shaft is fixed platen through which the device can effectively control the earthing switch is closing, the primary circuit is always in a disconnected state, to avoid the misuse of equipment accidents caused by large; cabinet after the interlock device is a chain head with an elastic cylindrical pin with chain and through the support shaft fixed to the cabinet on the chain's other end into the umbrella shaft hole in the fixed gear, cabinet back door or closure panel lock plate is fixed by the mutual movements of the parts, to avoid a circuit energized to open the door, thereby avoiding the occurrence of serious injury or death; said interlocking means is constituted by electric and electromagnetic latching auxiliary switch iron composition, the operating shaft fixed platen plate with auxiliary switch contacts contacts, auxiliary switch normally open, normally closed contact breaker points, respectively, closing the control loop and system control circuit connected to the electromagnetic iron latch control circuit is connected with the system, loss of power in the electromagnetic lock iron, its core can block the valve plate bending, when the earthing switch in the closing state due to the action of plate auxiliary switch contacts change, normally open contact is closed, normally closed contacts disconnect, such as closing the control loop is disconnected, allows the circuit breaker is always in the closing state, on the contrary, when the earthing switch is in the open state, the auxiliary switch back to normal, so to can operate normally while the primary circuit when the system is disconnected, the electromagnetic lock iron charged, the core being sucked together, then you can operate properly grounding switch, on the contrary, when the system is connected to the primary circuit, the electromagnetic lock iron loss of electricity, iron core back to normal, blocking the valve plate bending, resulting in operating handle insertion hole can not be, it can not be properly grounded switch operation, and further strengthened the earthing switch operating device protection to a greater extent to avoid a major equipment the occurrence of accidents and personal injury.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.

Fig. 1 is a kind of structural representation of the present invention.

Fig. 2 is that the local A of Fig. 1 is to view.

Fig. 3 is an another kind of structural representation of the present invention.

Fig. 4 is a kind of structural representation at interlock position before the cabinet of the present invention.

Fig. 5 is a kind of structural representation at interlock position behind the cabinet of the present invention.

Fig. 6 is a kind of structural representation at electric interlocking installation of the present invention position.

Embodiment

Embodiment 1, and a kind of withdraw-type switch cabinet earthed switch operating means is made up of switch operation device, mechanical interlocking device with reference to Fig. 1, Fig. 2; Switch operation device is that operating axis 5 front portions are movably arranged on the cabinet; Afterbody is provided with cone pinion 11, cone pinion 11 and large bevel gear 6 engagements, and large bevel gear 6 links to each other 12 with the main shaft of earthed switch;

Large bevel gear

6 and 10 engagements of interlocking cone pinion; Interlocking cone pinion 10 is connected with the chain axle 7 of mechanical interlocking device, and the structure of mechanical interlocking device is identical with prior art, and this constitutes a kind of structure of the present invention.

Embodiment 2, and a kind of withdraw-type switch cabinet earthed switch operating means is with reference to Fig. 2, Fig. 3, Fig. 4, Fig. 5; Be on the basis of embodiment 1, mechanical interlocking device by cabinet before behind interlock and the cabinet interlock form, interlock is to be fixed with front limit plate 16 and rear position margining plate 17 in the front portion of operating axis 5 before the cabinet; Valve bent plate 3 is contained between cabinet and the bent plate bearing 15; Be fixedly connected with junction panel 1,

guide pad

14 and 13 of fairleads are contained in respectively in the chute of valve bent plate 3 and junction panel 1 and with cabinet and link to each other, and support 4 is fixed on the cabinet; Link to each other through extension spring 2 between support 4 and the junction panel 1, on the rear of rear position margining plate 17 operating axis 5, be fixed with pressing plate 18; Interlock is that chain 9 usefulness elastic cylindrical pin is connected with chain axle 7 and is fixed on the cabinet through bearing 8 behind the cabinet; Fixing in the hole of the other end insertion interlocking cone pinion 10 of chain axle 7; Be fixed with jam plate 21 on cabinet back door or the shrouding, other and embodiment 1 are identical.

Embodiment 3, and a kind of withdraw-type switch cabinet earthed switch operating means is with reference to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6; Be on the basis of embodiment 2, in cabinet, be provided with electric interlocking installation, this device is made up of auxiliary switch 19 and electric-magnetic lock iron 20; Auxiliary switch 19 have three often open, two normally closed five groups of contacts, on the rear of rear position margining plate 17 operating axis 5, be fixed with pressing plate 18, pressing plate 18 contacts with action bars 23 tops of auxiliary switch 19 through backing plate 22; The upper and lower motion realization of action bars 23 is respectively organized the conversion of contact; When action bars 23 move downward put in place after, the normally opened contact of auxiliary switch 19 converts into normally closed, normally-closed contact often converts into and opens; Otherwise; If downward pressure discharges, action bars 23 upwards resets under the effect of return spring, and this moment, contacts status was just in time opposite with situation about moving downward; Three normally opened contacts of auxiliary switch 19 link to each other with the sub-gate circuit of breaker control circuit, the sub-gate circuit of system's control loop and the overhaul of the equipments caution demonstration of signal circuit respectively; Two normally-closed contacts of auxiliary switch 19 link to each other with the closing circuit of breaker control circuit and the closing circuit of system's control loop respectively, and electric-magnetic lock iron 20 links to each other with the control loop of system, when electric-magnetic lock iron 20 dead electricity; Its iron core can block valve bent plate 3, and other and embodiment 2 are identical.

The present invention adopts gear-driven mode to carry out the transmission of operating physical force, and has machinery, electric anti-misoperation function, partly is made up of switching manipulation part, mechanical chain part and electrical interlock; Wherein, mechanical chain part is divided into chain and the chain two parts in cabinet back door before the cabinet again, during the operational grounding switch, operating grip is inserted the operation termination of this mechanism, is rotated counterclockwise 180 degree, realizes that switch closes a floodgate; Cabinet back door or shrouding release can normally be opened back door or shrouding simultaneously, otherwise, like operational grounding switch separating brake, opposite when then program is with combined floodgate; When circuit breaker is in "on" position, when charged, earthed switch can't be operated on the circuit.Only when circuit breaker is in, just can carry out the earthed switch operation.And when earthed switch was in "on" position, circuit breaker can't close a floodgate.

This mechanism is a manual operation mechanism, and the operator utilizes operating grip, and earthed switch is carried out branch, combined floodgate.

The operating process that earthed switch closes a floodgate: at first with breaker open operation, make system be in off-position, at this moment, electric-magnetic lock iron 20 electric, circuit breaker cart is shaken out to test position, unclamp the junction panel 1 with cabinet, perhaps circuit breaker cart is shifted out outside the cabinet; Opening operation mechanism termination valve inserts operating grip in the operating axis 5, is rotated counterclockwise 180 degree; Through operating axis 5 drive cone pinions 11, large bevel gear 6 rotates, and drives earthed switch main shaft 12 and rotates, make earthed switch realize closing a floodgate after; Because the effect of front limit plate 16, renders operation axle 5 again can't be rotated further, simultaneously; Because the motion of pressing plate 18 changes the contact of auxiliary switch 19, so that the closing circuit of circuit breaker is in off-state all the time; Rear position margining plate 17 is also pushed down valve bent plate 3 along with the rotation of operating axis 5, and the junction panel 1 that links to each other with valve bent plate 3 and then moves downward, and has blocked the chain hole of cabinet; Even the circuit breaker cart junction panel can't insert in the chain hole of cabinet, like this; Because chain effect, circuit breaker cart just can't shake and enter the service position, thereby has guaranteed maintainer's personal safety; The chain also release along with the rotation of operating axis 5 in cabinet back door, the maintainer also just can get in the cabinet of back and carry out overhaul of the equipments.

The operating process of earthed switch separating brake: maintenance finishes, and shuts cabinet back door or shrouding, before cabinet in the earthed switch handle hole; Insert operating grip; The dextrorotation turnback drives the bevel gear mechanism kinematics through operating axis 5, make earthed switch realize separating brake after; Because the effect of front limit plate 16, renders operation axle 5 can't be rotated further; Simultaneously, each several part is chain before the cabinet also removes thereupon, and the cabinet back door is chain also can't open along with the rotation of operating axis 5 again; Extract operating grip, junction panel 1 drives valve bent plate 3 and moves upward, thereby blocked the earthed switch handle hole under the effect of extension spring 2; The circuit breaker cart junction panel is inserted in the chain hole of cabinet, shake to the service position and combined floodgate, at this moment, because the effect of electric-magnetic lock iron 20 and handcart junction panel, the earthed switch handle hole again can't be opened, and also just can't carry out earthed switch again and operate.

The present invention can with the supporting uses of earthed switch such as JN22B-40.5KV, JN15-40.5KV, JN15-10KV, be widely used in middle and high be pressed into the cover electric equipment in.

Claims

1. withdraw-type switch cabinet earthed switch operating means; Form by switch operation device and mechanical interlocking device; It is characterized in that described switch operation device is that operating axis (5) front portion is movably arranged on the cabinet; The afterbody of operating axis (5) is provided with cone pinion (11), the engagement of cone pinion (11) and large bevel gear (6), large bevel gear (6) link to each other with the main shaft of earthed switch (12); Large bevel gear (6) and interlocking cone pinion (10) engagement; Interlocking cone pinion (10) is connected with the chain axle (7) of mechanical interlocking device, mechanical interlocking device by cabinet before behind interlock and the cabinet interlock form, the preceding interlock of cabinet is to be fixed with front limit plate (16) and rear position margining plate (17) in the front portion of operating axis (5); Valve bent plate (3) is contained between cabinet and the bent plate bearing (15); Be fixedly connected with junction panel (1), guide pad (14) and fairlead (13) then are contained in respectively in the chute of valve bent plate (3) and junction panel (1) and with cabinet and link to each other, and support (4) is fixed on the cabinet; Link to each other through extension spring (2) between support (4) and the junction panel (1); Interlock is that chain head (9) is connected with chain axle (7) with elastic cylindrical pin and is fixed on the cabinet through bearing (8) behind the cabinet, and the other end insertion of chain (7) is interlocked and fixed in the hole of cone pinion (10), is fixed with jam plate (21) on cabinet back door or the shrouding.

2. a kind of withdraw-type switch cabinet earthed switch operating means according to claim 1; It is characterized in that in cabinet, being provided with electric interlocking installation; This electric interlocking installation is made up of auxiliary switch (19) and electric-magnetic lock iron (20); Auxiliary switch (19) have three often open, two normally closed five groups of contacts; On the rear operating axis (5) of rear position margining plate (17), be fixed with pressing plate (18); Pressing plate (18) can pass through backing plate (22) and contact with action bars (23) top of auxiliary switch (19), and the upper and lower motion of action bars (23) can realize respectively organizing the conversion of contact, and three normally opened contacts of auxiliary switch (19) link to each other with the sub-gate circuit of breaker control circuit, the sub-gate circuit of system's control loop and the overhaul of the equipments caution demonstration of signal circuit respectively; Two normally-closed contacts of auxiliary switch (19) link to each other with the closing circuit of breaker control circuit and the closing circuit of system's control loop respectively; Electric-magnetic lock iron (20) links to each other with the control loop of system, and when electric-magnetic lock iron (20) dead electricity, its iron core blocks valve bent plate (3).