CN101354992B - Remote-control straightgoing type falling fuse with lock - Google Patents

Abstract

The invention relates to a remote operated rectilinear drop-out fuse with a lock, comprising a high-voltage insulation strut, a fuse tube, a high-voltage wiring terminal, a drive mechanism and a control mechanism, wherein the lower end of the fuse tube is sleeved on a hanging mortar; the lower end of the high-voltage insulation strut is fixed with a guide way; the arrangement direction of the guide way is parallel to the fuse tube; the middle part of the hanging mortar and the guide way are in sliding connection; one end of the hanging mortar is hinged with the lower end of a push-pull rod; the upper end of the push-pull rod and a drive shaft of the drive mechanism are in fixed connection; the drive shaft makes rectilinear motion on the axis direction of the push-pull rod; and a fixed contact is made of a metal elastic trip. The remote operated rectilinear drop-out fuse with the lock has the advantages of small drop-out resistance for the fuse tube, flexible and reliable brake separation and the like, and is applicable to a protection switch for a high-voltage circuit of a power transformer.

Description

A kind of remote-control straightgoing type falling fuse with lock

Technical field

The present invention relates to a kind of fuse switch, particularly about a kind of wireless remote control fuse switch.The present invention is applicable to the protection switch of power transformer high-tension line.

Background technology

Between the high-tension line of electric power network and transformer, high voltage drop-out type fuse cutout is housed all, the needs of being convenient to transformer equipment and line upkeep maintenance or rationing the power supply.Common high voltage drop-out type fuse cutout, generally by high-tension porcelain insulator, fuse tube, high-voltage switch gear wiring, fuse tube one end and the wiring of porcelain vase high-voltage switch gear flexibly connect; The other end is connected on the porcelain vase through the movable shackle of fuse; When separating brake or combined floodgate, the manual work of needs use special high-pressure insulating rod is pushed to or is left behind, and operating personnel need dress insulation boots and insulating gloves during work; Operate cumbersome; And security incident takes place easily, when rain waiting bad weather operation, be very easy to take place the personal safety accident especially.For this reason; The Chinese patent publication number is the wireless remote control and manual dual-purpose fuse switch of CN2456308; Driving mechanism and controlling organization are set on the fuse Removable hook, and its controlling organization receives control of remote controller signal, the motor forward or reverse of controlling and driving mechanism; Realize the separating brake or the combined floodgate of fuse, easy to operate, safety.Yet; Existing fuse switch; Its fuse tube all with its lower end be fulcrum upwards upset contact with fixed contact and closes a floodgate, so fixed contact all is the employing fork configuration, and moving contact is the circular metal cap formation that is fixed in the fuse tube end; When fuse tube closed a floodgate, its circular metal cap embedded in the fork-shaped fixed contact.Its major defect is: under "on" position, the fork-shaped fixed contact has certain clamping force to the circular metal cap, when the fusible link in fuse tube fusing or when opening a sluice gate to operate, this clamping force can cause fuse tube can not be flexibly, fall reliably.

Summary of the invention

The objective of the invention is the shortcoming that exists to prior art, provide that a kind of remote-control straightgoing type falling fuse with lock falls flexibly, reliable remote-control straightgoing type falling fuse with lock.

The technical scheme that realizes the object of the invention comprises High-Voltage Insulation pillar, fuse tube, high-voltage connection terminal, driving mechanism, controlling organization; The fuse tube lower end is sleeved on and hangs on the mortar; And be electrically connected with following high-voltage connection terminal; The fuse tube upper end is fixedly connected the circular metal cap and constitutes moving contact, and fixed contact is connected with last high-voltage connection terminal, and High-Voltage Insulation pillar, driving mechanism, controlling organization are installed on the installing rack.Mainly be a fixing guide rail in the lower end of High-Voltage Insulation pillar, the installation direction of guide rail is parallel with fuse tube, is slidingly connected with guide rail in the middle of the extension mortar, and the end and the pull bar lower end that hang mortar are hinged; The upper end of pull bar is fixedly connected with the driving shaft of driving mechanism, and this driving shaft is rectilinear motion on the pull bar axis direction; Fixed contact adopts the metallic elastic sheet.

In above technical scheme, to hang mortar and be provided with a conduit saddle, fuse tube is provided with the supporting spring that cooperatively interacts with conduit saddle; Driving mechanism is meshing with each other by gear-tooth bar and forms, and the tooth bar lower end is fixedly connected driving shaft; On tooth bar, be provided with self-locking device, this self-locking device is made up of locking bar and cam, and cam is fixed on the machine shaft; The locking bar upper end is movably installed in a side of cam by pin; On locking bar, be provided with return spring, a lock pin is fixed in the locking bar lower end, and locked groove made on lock pin and the tooth bar cooperatively interacts; Gear and machine shaft flexibly connect, and are respectively equipped with on gear and the cam that pin props up and arc groove, and pin props up a sliding connection in arc groove.

In above technical scheme; Tooth bar is provided with manual unlocking apparatus, and this manual unlocking apparatus is made up of pull bar, the horizontal bolt of unblanking, pull-rod spring, and the centre of pull bar is shaped on square groove; Be movably connected on the tooth bar by the pull bar alignment pin, pull-rod spring is installed between pull bar and the tooth bar; The unblank centre of horizontal bolt is shaped on square groove, is movably connected on the tooth bar by the horizontal bolt alignment pin of unblanking, and the two ends of the horizontal bolt of unblanking withstand on respectively between pull bar and the locking bar, and pull bar is shaped on oblique convex surface with the upper end that the horizontal bolt of unblanking contacts face.

The present invention's advantage compared with prior art is: pull bar is moving linearly under driving mechanism drives; Drive fuse tube and do to keep straight on up and down motion; Make fixed contact can adopt the circular metal crown of flexure strip and fuse tube upper end to touch, make fuse tube fall non-resistance, separating brake flexibly, reliably.

Description of drawings

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

Fig. 2 is the structural representation of driving mechanism "on" position among Fig. 1 of the present invention.

Fig. 3 is the structural representation of driving mechanism hands off state among Fig. 1 of the present invention.

Embodiment

Remote-control straightgoing type falling fuse with lock as shown in Figure 1; Comprise High-Voltage Insulation pillar 2, fuse tube 8, high-voltage connection terminal, driving mechanism 1, controlling organization; Fuse tube 8 lower ends are sleeved on and hang on the mortar 7, and are electrically connected with following high-voltage connection terminal 9, and fuse tube 8 upper ends are fixedly connected the circular metal cap and constitute moving contact; Fixed contact is installed in the arc-extinguish chamber 3; And be connected with last high-voltage connection terminal 10, High-Voltage Insulation pillar 2, driving mechanism 1, controlling organization are installed on the installing rack 4, and installing rack 4 is fixedly installed on the electric pole.The fixing guide rail 6 in the lower end of High-Voltage Insulation pillar 2, the installation direction of this guide rail 6 is parallel with fuse tube 8, on guide rail 6, is slidingly connected in the middle of the extension mortar 7, can in the guide groove in the middle of the guide rail 6, slide, and its sliding distance is more than the 12cm.The lower end of end and pull bar 5 that hangs mortar 7 is hinged; The upper end of pull bar 5 is fixedly connected with the driving shaft 13 of driving mechanism 1; This driving shaft 13 can be on pull bar 5 axis directions rectilinear motion, promptly rotatablely moving of motor converts the rectilinear motion of driving shaft 13 in the driving mechanism 1 through gear.Fixed contact adopts the metallic elastic sheet, and this metallic elastic sheet is pressing down the moving contact of fuse tube 8 upper ends in "on" position.

Hang mortar 7 and be provided with a conduit saddle 11, fuse tube 8 is provided with the supporting spring 12 that cooperatively interacts with conduit saddle 11, and when fuse tube 8 and fixed contact were closed, supporting spring 12 was embedded in the conduit saddle 11, prevents that fuse tube 8 manually is pulled outwardly down.And when the fusible link of fuse tube 8 fused, fuse tube 8 descended, and made supporting spring 12 drop to the below of conduit saddle 11, and fuse tube 8 can be pulled outwardly down, realized changing fuse tube 8.Driving mechanism is meshing with each other by gear 15 and tooth bar 14 and forms, and tooth bar 14 lower ends are fixedly connected driving shaft 13.On tooth bar 14, be provided with self-locking device; This self-locking device is made up of locking bar 19 and cam 20; Cam 20 is fixed on the machine shaft 17; Locking bar 19 upper ends are movably installed in by pin 29 on the mounting panel 31 on cam 20 right sides, and tooth bar 14 is installed between pulley 32 and the locking bar 19, and pulley 32 is fixed on the mounting panel 31.On locking bar 19, be provided with return spring 18, a lock pin 21 is fixed in locking bar 19 lower ends, and made locked groove 22 cooperatively interacts on lock pin 21 and the tooth bar 14, and when fuse tube 8 and fixed contact were closed, lock pin 21 was embedded in the locked groove 22, prevents that fuse tube 8 from manually being left behind.Gear 15 flexibly connects with machine shaft 17, be respectively equipped with on gear 15 and the cam 20 pin prop up 16 with arc groove 30, pin 16 sliding connection in arc groove 30.When fuse tube 8 and fixed contact were closed, pin propped up 16 in the leftmost side of arc groove 30, when opening a sluice gate; Driven by motor cam 20 is rotated counterclockwise, and the projection of cam 20 backs down locking bar 19, and the lock pin 21 of locking bar 19 and locked groove 22 are broken away from; This moment pin 16 forwards the rightmost side of arc groove 30 to; 15 rotations of cam 20 driven gears, tooth bar 14 moves down, and drive pull bar 5, extension mortar 7, fuse tube 8 move down.

Tooth bar 14 is provided with manual unlocking apparatus; This manual unlocking apparatus is made up of pull bar 27, the horizontal bolt 23 of unblanking, pull-rod spring 28; The centre of pull bar 27 is shaped on square groove, is movably connected on the tooth bar 14 by pull bar alignment pin 26, and pull-rod spring 28 is installed between pull bar 27 and the tooth bar 14.The unblank centre of horizontal bolt 23 is shaped on square groove; Horizontal bolt alignment pin 24 is movably connected on the tooth bar 14 by unblanking; The unblank two ends of horizontal bolt 23 withstand on respectively between pull bar 27 and the locking bar 19, and pull bar 27 is shaped on oblique convex surface with the upper end that the horizontal bolt 23 of unblanking contacts face, and the lower end is shaped on drag hook 25.When manually spurring pull bar 27 downwards; Pull bar 27 moves down; The oblique convex surface of its upper end horizontal bolt 23 that promotes to unblank moves to right, and promotes locking bar 19 and turns right, and the lock pin 21 of locking bar 19 and locked groove 22 on the tooth bar 14 are broken away from; Continue pulling pull bar 27 downwards, will drive tooth bar 14, pull bar 5, extension mortar 7, fuse tube 8 and move down.

Claims (3)

1. remote-control straightgoing type falling fuse with lock; Comprise High-Voltage Insulation pillar (2), fuse tube (8), high-voltage connection terminal, driving mechanism (1), controlling organization, fuse tube (8) lower end is sleeved on and hangs on the mortar (7), and is electrically connected with following high-voltage connection terminal (9); Fuse tube (8) upper end is fixedly connected the circular metal cap and constitutes moving contact; Fixed contact is connected with last high-voltage connection terminal (10), and High-Voltage Insulation pillar (2), driving mechanism (1), controlling organization are installed on the installing rack (4), it is characterized in that the fixing guide rail (6) in the lower end of High-Voltage Insulation pillar (2); The installation direction of guide rail (6) is parallel with fuse tube (8); Be slidingly connected with guide rail (6) in the middle of hanging mortar (7), the end and pull bar (5) lower end that hang mortar (7) are hinged, and the upper end of pull bar (5) is fixedly connected with the driving shaft (13) of driving mechanism (1); This driving shaft (13) is rectilinear motion on pull bar (5) axis direction, and fixed contact adopts the metallic elastic sheet.

2. remote-control straightgoing type falling fuse with lock according to claim 1 is characterized in that hanging mortar (7) and is provided with a conduit saddle (11), and fuse tube (8) is provided with the supporting spring (12) that cooperatively interacts with conduit saddle (11); Driving mechanism (1) is meshing with each other by gear (15) and tooth bar (14) and forms, and tooth bar (14) lower end is fixedly connected driving shaft (13); On tooth bar (14), be provided with self-locking device; This self-locking device is made up of locking bar (19) and cam (20); Cam (20) is fixed on the machine shaft (17), and locking bar (19) upper end is movably installed in a side of cam (20) by pin (29), on locking bar (19), is provided with return spring (18); A lock pin (21) is fixed in locking bar (19) lower end, and lock pin (21) is gone up made locked groove (22) with tooth bar (14) and cooperatively interacted; Gear (15) flexibly connects with machine shaft (17), is respectively equipped with pin on gear (15) and the cam (20) and props up (16) and arc groove (30), pin (16) sliding connection in arc groove (30).

3. remote-control straightgoing type falling fuse with lock according to claim 2; It is characterized in that tooth bar (14) is provided with manual unlocking apparatus; This manual unlocking apparatus is made up of pull bar (27), the horizontal bolt (23) of unblanking, pull-rod spring (28); The centre of pull bar (27) is shaped on square groove, is movably connected on the tooth bar (14) by pull bar alignment pin (26), and pull-rod spring (28) is installed between pull bar (27) and the tooth bar (14); The unblank centre of horizontal bolt (23) is shaped on square groove; Be movably connected on the tooth bar (14) by the horizontal bolt alignment pin (24) of unblanking; The unblank two ends of horizontal bolt (23) withstand on respectively between pull bar (27) and the locking bar (19), and pull bar (27) is shaped on oblique convex surface with the upper end that the horizontal bolt (23) of unblanking contacts face.

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