CN210429644U

CN210429644U - Isolating switch

Info

Publication number: CN210429644U
Application number: CN201921119492.0U
Authority: CN
Inventors: 章琼渊; 唐凯; 胡理取
Original assignee: Zhejiang Guanfengda Electric Power Equipment Co ltd
Current assignee: Zhejiang Guanfengda Electric Power Equipment Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-04-28
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to an isolating switch, including fixing base, actuating mechanism, line insulator and switch, realize the switch on or break off of two lugs through the swing of switch, actuating mechanism connects and drives the swing of switch through the connecting rod, actuating mechanism includes fixed plate, motor and support, the support includes body and arc rack; the connecting rod is connected with the anti-falling device. The isolating switch replaces the original straight rack by the arc rack, so that the occupied space is reduced; the arc-shaped groove gives enough stroke acceleration to the output shaft of the motor, and ensures that the disconnecting link is pushed or pulled under enough instant starting force; when the disconnecting link needs to be disconnected, the driving mechanism gives a downward force to the anti-falling device through the connecting rod, the inserting rod inserted in the overlapping hole retracts and is locked, and then the disconnecting link customer is given a friction force between the disconnecting link customer and the lug to realize disconnecting of the disconnecting link and apply force in a sectional mode.

Description

Isolating switch

Technical Field

The utility model belongs to the technical field of power system equipment technique and specifically relates to an isolator.

Background

The isolating switch is important equipment for realizing separation and switching of a line power supply and ensuring power failure maintenance safety. When the emergency accident happens and the emergency accident needs to be immediately disconnected, if the operation cannot be finished in time, immeasurable disasters can be caused. The existing disconnecting switch pushes the disconnecting link through a driving mechanism to enable the disconnecting link to swing around a hinged point of the disconnecting link, so that the disconnecting link is opened to cut off a circuit. As is known, the circuit of the disconnecting switch is conducted by conducting the left and right lugs through the disconnecting link, so that the disconnecting link and the two lugs must be in sufficient contact to ensure the conduction of current therebetween, and the sufficient contact indicates the existence of friction between the disconnecting link and the two lugs. Meanwhile, the existing driving mechanism is long, occupies a large space, and easily causes the overall stability of the isolating switch, for example, Chinese patent No. 201910065877.1, application No. 2019.05.28, the patent name of the isolating switch with the anti-falling device, and the disclosed driving mechanism 7 comprises a shell and a fixing plate, a gear, a motor, a toothed bar and the like which are positioned in the shell, and the toothed bar needs to be arranged long due to the fact that the isolating switch in a disconnection state needs to be satisfied.

SUMMERY OF THE UTILITY MODEL

To the not enough in the background art, the utility model provides an isolator to overcome above defect.

The utility model provides a technical scheme that its technical problem adopted is:

an isolating switch comprises a fixed seat, a driving mechanism positioned above the fixed seat, and two parallel insulators and a disconnecting link which are positioned below the fixed seat, wherein one end of the disconnecting link is hinged to the end part of one insulator, which is far away from the fixed seat, the ends of the two insulators, which are far away from the fixed seat, are both fixed with lugs, the connection or disconnection of the two lugs is realized through the swinging of the disconnecting link, the driving mechanism is connected with and drives the disconnecting link to swing through a connecting rod, the driving mechanism comprises a fixed plate, a motor and a bracket, the motor is connected with an output shaft, the bracket comprises a body and an arc-shaped rack, the arc-shaped rack is meshed with the output shaft through a buffer assembly, the buffer assembly comprises a gear and a transition wheel, the transition wheel is meshed with teeth of the output shaft, the gear is meshed with the teeth of the arc-shaped rack, the transition; the bracket is rotationally fixed on the fixed plate through a pin, and one end of the bracket, which is far away from the arc-shaped rack, is rotationally connected with the connecting rod; anti-drop device is connected to the connecting rod other end, anti-drop device includes slider, the guide and wears to establish the inserted bar in slider and the guide simultaneously, the guide is fixed on the switch, slider and switch sliding connection, the slider is the setting of U type, be equipped with the spacer in it, two inside walls of slider are equipped with relative arch, one side that the guide was kept away from to the arch comprises hypotenuse and the straight flange that is located the hypotenuse upper and lower extreme, two upper and lower straight flanges extend to spacer and slider bottom respectively, the inserted bar is located the tip of slider and is equipped with the inserted bar vertically cylinder with it, the cover is equipped with the compression elastic component on the inserted bar, the compression elastic component is located the guide, the effect cylinder that receives the compression elastic component supports all the time on hypot.

The driving mechanism is externally sleeved with a cover body.

The connecting rod comprises a first section and a second section, the diameter of the second section is larger than that of the first section, the first section is arranged in the through hole in a penetrating mode, and the diameter of the second section is larger than that of the through hole.

Still be equipped with the bumping post on the fixed plate, the motor is located one side of fixed plate, and support and bumping post are located the opposite side of fixed plate, and the output shaft wears to establish the fixed plate and passes through the buffering subassembly meshing with the arc rack.

The wiring piece far away from the hinged end of the disconnecting link is provided with a lap joint hole for the insertion rod to be inserted.

The other end of the inserting rod is provided with an inclined plane which is inserted in the lap joint hole.

One end of the compression elastic piece is fixed on the outer wall of the inserted bar, and the other end of the compression elastic piece is abutted against the guide piece.

The upper end and the lower end of the sliding part are respectively provided with an outward boss, the disconnecting link comprises two parallel strip-shaped sheet bodies, the sliding part is positioned between the two strip-shaped sheet bodies and can slide relatively, and the strip-shaped sheet body on the same side is positioned between the upper boss and the lower boss; the guide member is fixed between the two strip-shaped sheet bodies.

The guide piece is provided with a guide hole; the end of the inserted bar provided with the column body is arranged in a rectangular structure, and the rectangular structure is always arranged between the two bulges in the opening and closing process of the isolation open pipe.

And the sliding piece is also provided with a connecting hole, and the connecting hole rotates the second connecting section through a pin.

Due to the adoption of the technical scheme, the problems that the existing driving mechanism 2 occupies a large space and the disconnecting switch 5 needs to simultaneously satisfy two forces are effectively solved, the isolating switch is reasonable and simple in structural design, the original straight rack is replaced by the arc-shaped rack 232, the occupied space is reduced, meanwhile, the arc-shaped rack 232 is larger than the straight rack relative to the straight rack and the meshing surface of the arc-shaped rack 232 and the gear on the output shaft is larger than the straight rack, the stability of the driving mechanism is enhanced, the buffering component 7 is arranged, the arc-shaped groove 721 provides enough stroke acceleration for the motor output shaft 221, and when the arc-shaped groove drives the gear 71 to rotate, the switch 5 can be pushed or pulled under enough instant starting force; when the disconnecting link 5 needs to be disconnected, the driving mechanism 2 gives a downward force to the anti-falling device 8 through the connecting rod 6, firstly retracts and locks the inserting rod 83 inserted in the overlap hole 41, and then gives a friction force between a user of the disconnecting link 5 and the lug 4 to realize the disconnection of the disconnecting link 5.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the present invention without the cover body 01.

Fig. 3 is a schematic structural view of the driving mechanism 2 pulling the knife switch 5 upward.

Fig. 4 is a schematic structural view of the knife gate 5 pushed downward by the driving mechanism 2.

Fig. 5 is a schematic structural view of the buffer assembly 7.

Fig. 6 is a schematic view of the installation structure of the anti-falling device 8 and the knife switch 5.

Fig. 7 is a schematic view of the sliding member 81 and the insertion rod 83 in a separated structure.

Fig. 8 is a schematic structural view of the insert rod 83.

Fig. 9 is a schematic structural view of the guide 82.

Fig. 10 is a schematic view of the separation structure of the falling off preventive means 8 and the lug 4.

Fig. 11 is a sectional view of the drop-off preventive device 8 with the insertion rod 83 extended.

Fig. 12 is a sectional view showing the structure of the drop-off preventive device 8 in a retracted state.

In figure 1, a fixed seat; 2. a drive mechanism; 21. a fixing plate; 211. a bumping post; 22. a motor; 221. an output shaft; 23. a support; 231. a body; 232. an arc-shaped rack; 3. an insulator; 4. a lug plate; 41. a lap joint hole; 5. a disconnecting link; 51. a strip-shaped sheet body; 6. a connecting rod; 61. a first segment; 62. a second segment; 7. a buffer assembly; 71. a gear; 711. a convex column; 72. a transition wheel; 721. an arc-shaped slot; 73. a light hole; 8. an anti-falling device; 81. a slider; 811. connecting holes; 82. a guide member; 821. a guide hole; 83. inserting a rod; 831. a cylinder; 832. a bevel; 9. a protrusion; 09. a rectangular structure; 91. a bevel edge; 92. straight sides; 93. a spacer; 10. compressing the elastic member; 01. a cover body; 02. a boss; 03. and (4) a pull ring.

Detailed Description

Referring to fig. 1 to 12, the present invention: an isolating switch comprises a fixed seat 1, a driving mechanism 2 positioned above the fixed seat 1, and two parallel insulators 3 and a disconnecting link 5 positioned below the fixed seat 1, wherein one end of the disconnecting link 5 is hinged to the end part of one insulator 3 far away from the fixed seat 1, one ends of the two insulators 3 far away from the fixed seat 1 are both fixed with connecting pieces 4, the connection or disconnection of the two connecting pieces 4 is realized through the swinging of the disconnecting link 5, the driving mechanism 2 is connected through a connecting rod 6 and drives the disconnecting link 5 to swing, the driving mechanism 2 comprises a fixed plate 21, a motor 22 and a bracket 23, the motor 22 is connected with an output shaft 221, the bracket 23 comprises a body 231 and an arc-shaped rack 232, the arc-shaped rack 232 is meshed with the output shaft 221 through a buffer component 7, the buffer component 7 comprises a gear 71 and a transition wheel 72, the transition wheel 72 is meshed with the teeth of the output shaft 221, the gear 71 is, the transition wheel 72 is provided with an arc-shaped groove 721, the gear 71 is provided with a convex column 711 which is in sliding fit with the arc-shaped groove 721, as shown in fig. 5, the output shaft 221 is provided with external teeth, the transition wheel 72 is provided with internal teeth which are engaged with the external teeth, the center of the gear 71 is provided with a light hole 73, the periphery of the gear is provided with external teeth which are engaged with the arc-shaped rack 232, the light hole 73 is sleeved on the output shaft 221, and the space between the gear 71 and the transition teeth 72 is arranged in the arc-shaped groove 721 through the convex column 711 to generate a driving effect. The arcuate slot 721 provides a cushion to the stroke of the output shaft 221 to increase speed.

The bracket 23 is rotationally fixed on the fixed plate 21 through a pin, and one end of the bracket 23, which is far away from the arc-shaped rack 232, is rotationally connected with the connecting rod 6; the other end of the connecting rod 6 is connected with an anti-falling device 8, the anti-falling device 8 comprises a sliding part 81, a guide part 82 and a plug rod 83 which penetrates through the sliding part 81 and the guide part 82 simultaneously, the guide part 82 is fixed on the disconnecting link 5, the sliding part 81 is connected with the disconnecting link 5 in a sliding mode, the sliding part 81 is arranged in a U shape, a spacer 93 is arranged in the sliding part, opposite bulges 9 are arranged on two inner side walls of the sliding part 81, one side edge, away from the guide part 82, of each bulge 9 is composed of a bevel edge 91 and a straight edge 92 positioned on the upper end and the lower end of each bevel edge 91, the upper straight edge and the lower straight edge respectively extend to the bottoms of the spacer 93 and the sliding part 81, a cylinder 831 perpendicular to the plug rod 83 is arranged at the end part of the corresponding sliding part 83 of the corresponding plug rod 83, a compression elastic part 10 is sleeved on.

The driving mechanism 2 is externally sleeved with a cover body 01. The cover body 01 plays a role in protecting the driving mechanism 2, and is waterproof and dustproof.

The fixing seat 1 is provided with a through hole 11 for the connecting rod 6 to penetrate through, the connecting rod 6 comprises a first section 61 and a second section 62, the diameter of the second section 62 is larger than that of the first section 61, the first section 61 penetrates through the through hole 1, and the diameter of the second section 62 is larger than that of the through hole 11. When the connecting rod 6 is upward, the upper end of the second large-diameter section 62 does not pass through the through hole 11, but is arranged at the position where the through hole 11 is formed in the fixed seat 1 in an overhead mode to play a limiting role, so that the driving mechanism 2 is shown in fig. 3, and the gear 71 is prevented from colliding with the body 231 to be damaged due to the inertia effect.

The fixing plate 21 is further provided with a stop pillar 211, the motor 22 is located on one side of the fixing plate 21, the bracket 23 and the stop pillar 211 are located on the other side of the fixing plate 21, and the output shaft 221 penetrates through the fixing plate 21 to be meshed with the arc-shaped rack 232 through the buffer component 7.

The lug 4, which is far from the hinged end of the knife switch 5, is provided with a lap hole 41 for inserting the insertion rod 83.

The other end of the insertion rod 83 is provided with an inclined surface 832, the inclined surface 832 is inserted into the overlapping hole 41, and when the knife switch 5 is fastened, the inclined surface 832 facilitates the insertion of the insertion rod 83 into the overlapping hole 41.

One end of the compression spring 10 is fixed to the outer wall of the plunger 83, and the other end abuts against the guide 82. The compression spring 10 gives the plunger 83 a force directed away from the slider 81, so that the column 831 always slides along the face of the projection 9 provided with the sloping edge 91 and the straight edge 92.

The upper end and the lower end of the sliding part 81 are respectively provided with an outward boss 02, the disconnecting link 5 comprises two parallel strip-shaped sheet bodies 51, the sliding part 81 is positioned between the two strip-shaped sheet bodies 51 and can slide relatively, and the strip-shaped sheet body 51 at the same side is positioned between the upper boss 02 and the lower boss 02; the guide 82 is fixed between the two strip-shaped bodies 51.

The guide member 82 is provided with a guide hole 821; the end of the inserted link 83 provided with the column 831 is provided with a rectangular structure 09, and the rectangular structure 09 is always arranged between the two bulges 9 in the opening and closing process of the isolation open pipe.

The sliding part 81 is also provided with a connecting hole 811, and the connecting hole 811 rotates the second connecting section 62 through a pin.

A pull ring 03 is arranged below the sliding part 81. The pull ring 03 facilitates the application of manual or other external forces.

Specifically, when the knife switch 5 needs to be disconnected, firstly, as shown in fig. 2, the motor 22 drives the output shaft 221 to rotate counterclockwise, so that the arc-shaped rack 232 meshed with the gear 71 is meshed with the output shaft and rotates counterclockwise around the connection point 04, so as to drive the connecting rod 6 connected with the body 231 to move downward, the connecting rod 6 gives a downward force to the sliding member 81, firstly, the sliding member 81 is forced to move downward relative to the knife switch 5 and the guide member 82, in the process, as shown in fig. 12, the upright column 831 moves along the inclined edge 91 until the straight edge 92 at the upper end, the inserted link 83 is pulled back into the guide member 82, because the straight edge 92 is perpendicular to the inserted link 83, the sliding member 81 is pushed downward continuously under the dual action of the compression elastic member 10 and the straight edge 92 at the upper end, the restoring force of the compression elastic member 10 is all released on the straight edge 92 at the upper end, and the downward force only needs to overcome the friction force between the strip-shaped sheet body 51 and the connecting, i.e. the disconnector is open. As shown in fig. 4, when the knife switch 5 swings downward to a certain position, the stop post 211 stops one side of the body 231 to prohibit the bracket 23 from further rotating, and the structure is arranged to avoid the gear 71 from being damaged due to the inertia gear 71 hitting against the side wall of the bracket 23 which is stopped.

When the knife switch 5 needs to be closed, as above, the driving mechanism 2 gives the sliding member 81 an upward pulling force through the connecting rod 6, as shown in fig. 11, because the sliding member 81 and the guiding member 82 move relatively, the upright 831 is located at the straight edge 92 at the lower end of the protrusion 9, and at this time, the end of the inserting rod 83 having the inclined surface 832 extends out of the guiding member 82; when the sliding member 81 is further pulled upwards, the knife switch 5 approaches the terminal 4 at the disconnected end, as shown in fig. 10, the terminal 4 is provided with an end contact inclined surface 832 of the overlap hole 41, and due to the structure of the inclined surface 832, the elastic member 10 is compressed, and finally, under the resetting force of the compressed elastic member 10, the inclined surface 832 end of the inserting rod 83 is inserted into the overlap hole 41. Closing of the knife switch 5 is completed.

The utility model discloses the effectual big and disconnection switch 5 of existing actuating mechanism 2 occupation space of having improved must satisfy the problem of two power simultaneously, this isolator structural design is reasonable simple, replace original straight rack through arc rack 232, reduce occupation space, arc rack 232 is the straight rack relatively simultaneously, its and the meshing surface of the gear on the output shaft is greater than straight rack, the stability of reinforcing actuating mechanism, be equipped with and put buffering subassembly 7, arc slot 721 gives motor output shaft 221 sufficient stroke acceleration, when it drives gear 71 and rotates, the state of having the uniform velocity, can guarantee that switch 5 receives sufficient instant starting force and is pushed or pulled; when the disconnecting link 5 needs to be disconnected, the driving mechanism 2 gives a downward force to the anti-falling device 8 through the connecting rod 6, firstly retracts and locks the inserting rod 83 inserted in the overlap hole 41, and then gives a friction force between a user of the disconnecting link 5 and the lug 4 to realize the disconnection of the disconnecting link 5.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides an isolating switch, includes fixing base (1), is located actuating mechanism (2) of fixing base (1) top and is located two parallel insulator (3) and switch (5) of fixing base (1) below, switch (5) one end articulates the tip of keeping away from fixing base (1) in one of them insulator (3), and the one end of keeping away from fixing base (1) in two insulators (3) all is fixed with lug (4), realizes switching on or breaking off of two lugs (4) through the swing of switch (5), actuating mechanism (2) are connected and are driven switch (5) swing through connecting rod (6), its characterized in that: the driving mechanism (2) comprises a fixing plate (21), a motor (22) and a support (23), the motor (22) is connected with an output shaft (221), the support (23) comprises a body (231) and an arc-shaped rack (232), the arc-shaped rack (232) is meshed with the output shaft (221) through a buffer assembly (7), the buffer assembly (7) comprises a gear (71) and a transition wheel (72), the transition wheel (72) is meshed with teeth of the output shaft (221), the gear (71) is meshed with the teeth of the arc-shaped rack (232), an arc-shaped groove (721) is formed in the transition wheel (72), and a convex column (711) in sliding fit with the arc-shaped groove (721) is formed in the gear (71); the bracket (23) is rotationally fixed on the fixed plate (21) through a pin, and one end of the bracket (23) far away from the arc-shaped rack (232) is rotationally connected with the connecting rod (6); the other end of the connecting rod (6) is connected with an anti-drop device (8), the anti-drop device (8) comprises a sliding part (81), a guide part (82) and an inserted link (83) which is arranged in the sliding part (81) and the guide part (82) in a penetrating mode, the guide part (82) is fixed on the disconnecting link (5), the sliding part (81) is connected with the disconnecting link (5) in a sliding mode, the sliding part (81) is arranged in a U shape, a separation piece (93) is arranged in the sliding part, opposite bulges (9) are arranged on two inner side walls of the sliding part (81), one side edge, far away from the guide part (82), of each bulge (9) consists of a bevel edge (91) and a straight edge (92) positioned at the upper end and the lower end of the bevel edge (91), the upper straight edge and the lower straight edge respectively extend to the bottoms of the separation piece (93) and the sliding part (81), a cylinder (831) perpendicular to the inserted link (83, the compression elastic element (10) is positioned in the guide element (82), and the cylinder (831) is always pressed against the bevel edge (91) or the straight edge (92) under the action of the compression elastic element (10).

2. The isolating switch of claim 1, wherein: the driving mechanism (2) is externally sleeved with a cover body (01).

3. The isolating switch of claim 1, wherein: the connecting rod (6) comprises a first section (61) and a second section (62), the diameter of the second section (62) is larger than that of the first section (61), the first section (61) is arranged in the through hole (11) in a penetrating mode, and the diameter of the second section (62) is larger than that of the through hole (11).

4. The isolating switch of claim 1, wherein: still be equipped with bumping post (211) on fixed plate (21), motor (22) are located one side of fixed plate (21), and support (23) and bumping post (211) are located the opposite side of fixed plate (21), and output shaft (221) wear to establish fixed plate (21) and arc rack (232) and pass through buffering subassembly (7) meshing.

5. The isolating switch of claim 1, wherein: the lug (4) far away from the hinged end of the disconnecting link (5) is provided with a lap joint hole (41) for inserting the insertion rod (83).

6. The isolating switch of claim 5, wherein: the other end of the insertion rod (83) is provided with an inclined plane (832), and the inclined plane (832) is inserted into the overlapping hole (41).

7. The isolating switch of claim 1, wherein: one end of the compression elastic piece (10) is fixed on the outer wall of the inserted rod (83), and the other end of the compression elastic piece is abutted against the guide piece (82).

8. The isolating switch of claim 1, wherein: the upper end and the lower end of the sliding part (81) are respectively provided with an outward boss (02), the disconnecting link (5) comprises two parallel strip-shaped sheet bodies (51), the sliding part (81) is positioned between the two strip-shaped sheet bodies (51) and can slide relatively, and the strip-shaped sheet body (51) at the same side is positioned between the upper boss and the lower boss (02); the guide (82) is fixed between the two strip-shaped sheets (51).

9. The isolating switch of claim 1, wherein: a guide hole (821) is formed in the guide piece (82); one end of the inserted link (83) provided with the column body (831) is arranged in a rectangular structure (09), and the rectangular structure (09) is always arranged between the two bulges (9) in the opening and closing process of the isolation opening pipe.

10. A disconnector according to claim 3, characterized in that: and the sliding piece (81) is also provided with a connecting hole (811), and the connecting hole (811) rotates the second connecting section (62) through a pin.