CN201689798U

CN201689798U - Interlocking device of high-voltage switch cabinet

Info

Publication number: CN201689798U
Application number: CN201020172245XU
Authority: CN
Inventors: 谢开源; 周志勇; 赖少亮
Original assignee: GUANGXI LIUDIAN ELECTRIC CO Ltd
Current assignee: GUANGXI LIUDIAN ELECTRIC CO Ltd
Priority date: 2010-04-27
Filing date: 2010-04-27
Publication date: 2010-12-29
Anticipated expiration: 2020-04-27

Abstract

The utility model discloses an interlocking device of a high-voltage switch cabinet, which comprises an interlocking actuating mechanism, an interlocking operating mechanism and a main shaft interlocking piece. The interlocking actuating mechanism comprises a rotating shaft, a releasing push rod and a switching blocking rod; a transmission shaft is installed on the top surface of a breaker; one end of the rotating shaft is connected with a rotating turnover plate; the lower ends of the releasing push rod and the switching blocking rod are respectively butted with a releasing bent plate structure and a switching bent plate structure; the upper ends of the releasing push rod and the switching blocking rod are connected with the rotating shaft in a rotating way through a rotating arm; the interlocking operating mechanism comprises an interlocking push rod, an interlocking connecting rod and a connecting plate; the interlocking push rod is installed on the side surface of the breaker through a guide plate; the upper end of the interlocking push rod is closely stuck to the rotating turnover plate; the lower end of the interlocking push rod is connected with the right end of the connecting plate; the upper end of the interlocking connecting rod is hinged with a mechanical locking shifting fork; the lower end of the interlocking connecting rod is connected with the left end of the connecting plate; the main shaft interlocking piece comprises a rotating handle and a pressing block; and the rotating handle is connected with a switching main shaft. The interlocking device adopts 'a hard connection mode' to realize interlocking, and has the advantages of simple structure, safe use, reliable interlocking, and convenient manufacture, installation and adjustment.

Description

A kind of high-tension switch cabinet interlock

Technical field

The utility model relates to a kind of High voltage power supply equipment, particularly a kind of high-tension switch cabinet interlock.

Background technology

[0002] high-tension switch cabinet is the visual plant in the power supply-distribution system, mainly form by circuit breaker and isolating switch etc., possesses " five is anti-" requirement in order to satisfy the metal-enclosed type high-tension switch cabinet, that is: 1. prevent the on-load branch, close isolating switch, 2. prevent the mistake branch, close circuit breaker, 3. prevent charged (extension) splice grafting ground wire (switch), 4. prevent to be with earth connection (switch) to close circuit breaker (isolating switch), 5. prevent mistakenly entering charged chamber.Press the regulation of GB/T11022-1999, should install interlocking between the different elements of high-tension switch cabinet, when design, should pay the utmost attention to mechanical interlocking.The interlock that uses between present circuit breaker and the isolating switch, be to adopt steel wire rope that isolator operation dish locking shift fork and circuit breaker tripping device are connected together (as shown in Figure 3), when isolator operation dish locking shift fork spurs the circuit breaker tripping device by steel wire rope when pulling out " disjunction locking ", circuit breaker can not close a floodgate, and realizes " preventing that on-load from closing isolating switch "; When circuit breaker is in when closing a floodgate, the locking handle can't rotate to " disjunction locking " position, realizes " prevent on-load branch from keeping apart the pass ".But this technical scheme has the following disadvantages: 1, this technical scheme adopts " soft connection ", promptly handles interlocking by steel wire rope, when circuit breaker is in combined floodgate, if firmly rotate the words of locking handle, still can rotating operation dish locking handle and by the disjunction of steel wire rope pulling circuit breaker trip, promptly can not be locked, in other words, this technical scheme does not reach in breaker closing and can not divide, close isolating switch; 2, the folder mouth of steel wire rope is loosening easily causes interlocking unreliable; 3, service time the long back steel wire rope not stretchy that gets rusty, cause interlocking not realize.

Summary of the invention

The purpose of this utility model is to provide a kind of safe in utilization, reliable high-tension switch cabinet interlock of interlocking, to overcome existing existing above-mentioned deficiency.

The technical solution of the utility model is: a kind of high-tension switch cabinet interlock, be installed between isolating switch and the circuit breaker, described interlock is by interlocking actuator, interlocked operation mechanism and main shaft locking part constitute, described chain actuator comprises rotation axis, dropout push rod and combined floodgate pin, power transmission shaft is rotationally connected with the rotation axis support that is fixedly mounted on the circuit breaker end face, the upper end of dropout push rod and combined floodgate pin is connected to the stage casing and a termination of rotation axis by cursor, dock with the dropout bent plate structure of circuit breaker the lower end of dropout push rod, dock with the combined floodgate bent plate structure of circuit breaker the lower end of combined floodgate pin, the end that rotation axis stretches out the circuit breaker side is connected with the rotation turnover panel, rotate turnover panel and drive the rotation axis rotation, and then drive dropout push rod and the lifting of combined floodgate pin, thereby retaining is dead or avoid threading off bent plate and combined floodgate bent plate.

Described interlocked operation mechanism comprises the interlocking push rod, interlocking rod and connecting plate, the interlocking push rod passes the pilot hole that is fixed on the guide plate on the circuit breaker sidewall and vertically installs, the rotation turnover panel that is connected with power transmission shaft is close in its upper end, the right-hand member of its lower end and connecting plate is hinged, connecting plate is hinged by the hinge hole and the fixed support at its middle part, the left end of connecting plate and the lower end of interlocking rod are hinged, the mechanical latching shift fork of the upper end of interlocking rod and isolator operation dish is hinged, the mechanical latching shift fork is connected with the mechanical latching handle, the rotary machine latch handle drives the interlocking rod lifting, the two ends, the left and right sides that make connecting plate descend or rise thereby drive the interlocking push rod around the positive and negative rotation of support bracket fastened hinge.

Described main shaft locking part is made of handler and the briquetting that is attached thereto, and handler is connected with the combined floodgate main shaft that stretches out the circuit breaker sidewall, during combined floodgate main shaft left-right rotation, drives handler and briquetting and rotates, thereby compress or leave the right-hand member of connecting plate.

Its further technical scheme is: the lower end of described interlocking push rod is hinged by the right-hand member of Adjusting bolt Adjusting screw and connecting plate, and the interlocking push rod is threaded with Adjusting bolt Adjusting screw.

Its further technical scheme be: two ends, the described connecting plate left and right sides are provided with 3～5 hinge holes that are used to regulate different installation sites.

Owing to take technique scheme, a kind of high-tension switch cabinet interlock of the utility model has following beneficial effect: 1, because a kind of high-tension switch cabinet interlock of the utility model adopts " the hard connection " mode to realize interlocking, overcome the not dead problem of " soft connection " lock, really realized the two-way interlocking between isolating switch and the circuit breaker, and not existing " rope cramp mouth loosening " to reach the problem of " steel wire rope get rusty stretchy not, cause interlocking not realize ", equipment is in use safer, reliable.

2, the interlocking push rod of a kind of high-tension switch cabinet interlock of the utility model is connected with connecting plate by Adjusting bolt Adjusting screw, Adjusting bolt Adjusting screw can be regulated circuit breaker when mounted because the height that mismachining tolerance caused is inconsistent, makes the interlocking push rod and rotates contacting apart from more accurate between the turnover panel; And, can select chain connecting rod of suitable Kong Weiyu and interlocking push rod hinged because two ends, the connecting plate left and right sides have a plurality of hinge holes, and reach the precision of left and right directions position when regulating the circuit breaker installation, make interlocked operation accurate, errorless.

3, a kind of high-tension switch cabinet interlock structure of the utility model is uncomplicated, and manufacturing and installation are adjusted all very convenient.

Be further described below in conjunction with the technical characterictic of drawings and Examples a kind of high-tension switch cabinet interlock of the utility model.

Description of drawings: Fig. 1～Fig. 3: a kind of high-tension switch cabinet interlock structural representation of the utility model: Fig. 1-front view, the left view of Fig. 2-Fig. 1, the A of Fig. 3-Fig. 1 is to partial enlarged drawing; The interlock structural representation of Fig. 4-former useful steel wire rope " soft connection ".

Among the figure: B-circuit breaker, 1-mechanical latching shift fork, 2-interlocking rod, 3-connecting plate, 31-hinge hole, 4-fixed support, 5-Adjusting bolt Adjusting screw, the 6-push rod of interlocking, 7-main shaft locking part, 71-briquetting, 72-handler, 8-combined floodgate main shaft, the 9-guide plate, the 10-rotation axis, 101-rotates turnover panel, 11-rotation axis support, 12-dropout push rod, 13-combined floodgate lever, 14-mechanical latching handle, the chain fixed head of 15-, 16-steel wire rope, 17-steel wire rope positioning sleeve.

Embodiment: a kind of high-tension switch cabinet interlock, be installed between the isolating switch and circuit breaker of mechanical latching, described interlock is by interlocking actuator, interlocked operation mechanism and main shaft locking part constitute, described chain actuator comprises rotation axis 10, dropout push rod 12 and combined floodgate pin 13, power transmission shaft 10 is rotationally connected with two rotation axis supports 11 that are fixedly mounted on the circuit breaker end face, the upper end of dropout push rod 12 and combined floodgate pin 13 is connected the stage casing and the right-hand member head of rotation axis 10 respectively by cursor, (not marking among the figure) docked with the dropout bent plate structure of circuit breaker in the lower end of dropout push rod 12, (not marking among the figure) docked with the combined floodgate bent plate structure of circuit breaker in the lower end of combined floodgate pin 13, the left end that rotation axis stretches out the circuit breaker side is connected with rotation turnover panel 101, when rotating the rotation of turnover panel drive rotation axis, can drive dropout push rod and the lifting of combined floodgate pin, thereby the dropout push rod is withstood or unclamp the dropout bent plate of circuit breaker, make the combined floodgate pin block or avoid the combined floodgate bent plate of circuit breaker.

Described interlocked operation mechanism comprises interlocking push rod 6, interlocking rod 2 and connecting plate 3, interlocking push rod 6 passes the pilot hole of the guide plate 9 that is fixed on the circuit breaker sidewall and vertically installs, the below of the rotation turnover panel 101 that is connected with power transmission shaft is close in its upper end, the lower end of interlocking push rod 6 and the right-hand member of connecting plate 3 are hinged, connecting plate 3 is hinged by the hinge hole and the fixed support 4 at its middle part, the lower end of the left end of connecting plate 3 and interlocking rod 2 is hinged, the mechanical latching shift fork 1 of the upper end of interlocking rod 2 and isolator operation dish is hinged, mechanical latching shift fork 1 is connected with mechanical latching handle 14, left-right rotation mechanical latching handle can drive the interlocking rod lifting, the two ends, the left and right sides that make connecting plate descend or rise thereby drive the interlocking push rod around the positive and negative rotation of support bracket fastened hinge.

Described main shaft locking part 7 is made of handler 72 and the briquetting 71 that is attached thereto, and handler 72 is connected with the combined floodgate main shaft 8 that stretches out the circuit breaker sidewall, during combined floodgate main shaft left-right rotation, drives handler and briquetting and rotates, thereby compress or leave the right-hand member of connecting plate.

The lower end of described interlocking push rod 6 is hinged with the right-hand member of connecting plate 3 by Adjusting bolt Adjusting screw 5, and interlocking push rod 6 is threaded with Adjusting bolt Adjusting screw 5.

Two ends, described connecting plate 3 left and right sides are established and are had 3～5 hinge holes 31 that are used to regulate different installation sites.

The operation principle of a kind of high-tension switch cabinet interlock of the utility model: when circuit breaker is in the separating brake position, mechanical latching handle 14 is pulled out dextrorotation to " disjunction locking " position from " work " position, this moment, mechanical latching fork 1 was to pressing down interlocking rod 2, the left end of connecting plate 3 is moved downward, the right-hand member of connecting plate moves upward, drive has the interlocking push rod 6 of guide plate location upwards to push up, make and rotate upwards rotation of turnover panel 101, the cursor that drives rotation axis 10 and dropout push rod 12 and combined floodgate pin 13 rotates, and then drive connected dropout push rod 12 and combined floodgate pin 13 moves downward, make dropout push rod 12 withstand the dropout bent plate of circuit breaker, combined floodgate pin 13 blocks the combined floodgate bent plate of circuit breaker, circuit breaker can not close a floodgate, and prevent the on-load branch, close isolating switch.When circuit breaker is in closing position, the combined floodgate main shaft 8 of circuit breaker drives main shaft locking part 7 and turns right, briquetting 71 is pushed down connecting plate 3 right-hand members downwards can't move upward it, the left end of connecting plate then can't move downward, mechanical latching handle 14 can not rotate to " disjunction locking " position, isolating switch avoids mistake to divide circuit breaker akinesia, thereby has satisfied " five the is anti-" requirement to high-voltage switch gear.

Claims

1. high-tension switch cabinet interlock, be installed between isolating switch and the circuit breaker, it is characterized in that: described interlock is by interlocking actuator, interlocked operation mechanism and main shaft locking part constitute, described chain actuator comprises rotation axis (10), dropout push rod (12) and combined floodgate pin (13), power transmission shaft (10) is rotationally connected with the rotation axis support (11) that is fixedly mounted on the circuit breaker end face, the upper end of dropout push rod (12) and combined floodgate pin (13) is connected the stage casing and a termination of rotation axis (10) respectively by cursor, dock with the dropout bent plate structure of circuit breaker the lower end of dropout push rod (12), dock with the combined floodgate bent plate structure of circuit breaker the lower end of combined floodgate pin (13), the end that rotation axis stretches out the circuit breaker side is connected with rotation turnover panel (101), rotate turnover panel and drive rotation axis (10) rotation, and then drive cursor and connected dropout push rod (12) and combined floodgate pin (13) lifting, thereby retaining is dead or avoid threading off bent plate and combined floodgate bent plate;

Described interlocked operation mechanism comprises interlocking push rod (6), interlocking rod (2) and connecting plate (3), interlocking push rod (6) passes the pilot hole of the guide plate (9) that is fixed on the circuit breaker sidewall and vertically installs, the rotation turnover panel (101) that is connected with power transmission shaft is close in its upper end, the right-hand member of its lower end and connecting plate (3) is hinged, connecting plate (3) is hinged by the hinge hole and the fixed support (4) at its middle part, the lower end of the left end of connecting plate (3) and interlocking rod (2) is hinged, the mechanical latching shift fork (1) of the upper end of interlocking rod (2) and isolator operation dish is hinged, mechanical latching shift fork (1) is connected with mechanical latching handle (14), the rotary machine latch handle drives the interlocking rod liter or falls, the two ends, the left and right sides that make connecting plate descend or rise thereby drive the interlocking push rod around the positive and negative rotation of support bracket fastened hinge;

Described main shaft locking part (7) is made of handler (72) and the briquetting (71) that is attached thereto, handler (72) is connected with the combined floodgate main shaft (8) that stretches out the circuit breaker sidewall, during combined floodgate main shaft left-right rotation, drive the rotation of handler and briquetting, thereby compress or leave the right-hand member of connecting plate.

2. a kind of high-tension switch cabinet interlock according to claim 1 is characterized in that: the lower end of described interlocking push rod (6) is hinged with the right-hand member of connecting plate (3) by Adjusting bolt Adjusting screw (5), and interlocking push rod (6) is threaded with Adjusting bolt Adjusting screw (5).

3. a kind of high-tension switch cabinet interlock according to claim 1 and 2 is characterized in that: described connecting plate (3) two ends, the left and right sides are provided with 3～5 hinge holes (31) that are used to regulate different installation sites.