CN210052682U

CN210052682U - Vacuum load switch

Info

Publication number: CN210052682U
Application number: CN201920569589.5U
Authority: CN
Inventors: 林碎国; 陈先
Original assignee: Zhejiang Hubian Electric Power Technology Co Ltd
Current assignee: Zhejiang Hubian Electric Power Technology Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-02-11
Anticipated expiration: 2029-04-24

Abstract

The utility model discloses a vacuum load switch, including base and base up end welded first ceramic pipe, third ceramic pipe and fourth ceramic pipe, the welding of the first ceramic pipe center pin department of terminal surface has the second ceramic pipe under the base, its characterized in that, the inside first spout of having seted up of base, the welding of drive rod side table wall has three transmission gear dish. The utility model discloses in, the lagging drives through first ceramic pipe and keeps apart the plug-in strip to the top motion, thereby make and keep apart the plug-in strip and drive the slide bar and break away from the electrode in real empty room, make electric arc weaken in real empty room, avoid burning out the device, again owing to adopted the sliding connection of piston cover with third ceramic pipe, the third spout is kept away from to the fixture block under the condition of outage when having realized keeping apart the plug-in strip rotation, thereby avoided the circuit to expose partial open circuit outside, and then the danger that produces when reducing the circuit disconnection.

Description

Vacuum load switch

Technical Field

The utility model relates to a switch technical field especially relates to vacuum load switch.

Background

The load switch is a switching device between a circuit breaker and a disconnecting switch, has a simple arc-extinguishing device, can cut off rated load current and certain overload current, but can not cut off short-circuit current, is generally provided with the simple arc-extinguishing device, but has a simpler structure and a working process that: during brake opening, under the action of a brake opening spring, the main shaft rotates clockwise, and on one hand, the piston moves upwards through the crank slider mechanism to compress gas; on the other hand, through a transmission system consisting of two sets of four-bar mechanisms, the main knife switch is opened firstly, then the arc extinguishing knife switch is pushed to open the arc contact, and compressed air in the air cylinder blows out electric arcs through the nozzle.

The existing load switch is widely applied, however, the existing load switch has the following defects in use, firstly, when a power supply is disconnected, electric arc is generated, and danger is easy to occur; secondly, after the power supply is disconnected, the switch blade needs to be physically disconnected to prevent the power supply from being connected; finally, multiple groups of circuits need to be controlled respectively and are disconnected independently for a certain circuit.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the vacuum load switch is provided for solving the problems of power supply broken arc exposure, physical disconnection knife and the separate control of a plurality of groups of circuits.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

vacuum load switch, including base and base up end welded first ceramic pipe, third ceramic pipe and fourth ceramic pipe, the welding of the first ceramic pipe center pin department of terminal surface has the second ceramic pipe under the base, its characterized in that, the inside first spout of having seted up of base, and the inside sliding connection of first spout has the transfer line, one side table wall welding that first ceramic pipe was kept away from to the transfer line has the runner, the inside sliding connection of base has three lagging, and three lagging top inner chamber respectively with three first ceramic pipe side table wall joint to the meshing groove has all been seted up to three lagging bottom inner chamber, three lagging all with base sliding connection, the welding of transfer line side table wall has three transmission gear dish.

As a further description of the above technical solution:

the base is close to the inside spacing groove of having seted up of one side of runner, the outside surface wall welding of transfer line has spacing lug, and spacing lug and spacing groove joint.

As a further description of the above technical solution:

the base is internally provided with a second sliding groove, the inside of the second sliding groove is connected with a sliding block in a sliding mode, the sliding block is elastically connected with the second sliding groove through a compression spring, and the sliding block is connected with a limiting lug in a clamping mode.

As a further description of the above technical solution:

the utility model discloses a ceramic tube, including first ceramic tube, second ceramic tube, sliding rod, piston sleeve and third ceramic tube, third ceramic tube cavity clearance fit has the sliding rod, sliding rod side surface wall welding has the piston sleeve, piston sleeve and third ceramic tube cavity transition fit, vacuum chamber has been seted up between second ceramic tube and the third ceramic tube, the welding of second ceramic tube inside center pin department has the electrode that runs through the second ceramic tube, and terminal surface laminating under electrode up end and the sliding rod, the electrode up end is in inside vacuum chamber.

As a further description of the above technical solution:

the utility model discloses a ceramic tube, including first ceramic tube, slide bar, first ceramic tube, fourth ceramic tube, slide bar, first ceramic tube, second ceramic tube, fourth ceramic tube, slide bar, first ceramic tube, second ceramic tube.

As a further description of the above technical solution:

the middle meshing groove of the three meshing grooves is in meshing connection with the transmission gear disc, the meshing groove on the left side is located on the right side of the transmission gear disc close to the meshing groove on the left side, and the meshing groove on the right side is located on the left side of the transmission gear disc close to the meshing groove on the right side.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, owing to adopted the runner to pass through the rotation that the transfer line drove the transmission gear dish, the interval of operating personnel and inside electrical components has been realized, produce danger when avoiding being close to, again owing to adopted to obtain meshing between transmission gear dish and the meshing groove and be connected, realized that the runner drives the lagging and slides about the base is inside, simultaneously owing to adopted to keep apart the rotation between plug-in strip and the first ceramic pipe and be connected, realized that the lagging drives through first ceramic pipe and keeps apart the plug-in strip to the top motion, thereby make and keep apart the plug-in strip and drive the slide bar and break away from the electrode in real empty room, make electric arc weaken in real empty room, avoid burning out the device.

2. The utility model discloses in, owing to adopted the sliding connection between third spout and the fixture block, realized that first ceramic pipe drives the fixture block and breaks away from the third spout, owing to adopted the sliding connection of piston cover with third ceramic pipe again, the third spout is kept away from to the fixture block under the condition of outage when having realized keeping apart the plug-in strip rotation to avoid the circuit to expose partial open circuit externally, and then reduced the danger that produces when the circuit breaks off.

3. The utility model discloses in, owing to adopted the elastic connection between slider and the second spout, realized to the joint between slider and the spacing lug, owing to adopted the joint between spacing groove and the spacing lug again, realized spacing on the transfer line horizontal direction, owing to adopted the independent meshing between three transmission gear dish and the three meshing groove simultaneously, conveniently through the runner to the separate control of three circuit.

Drawings

Fig. 1 is a schematic view of the main structure of the vacuum load switch of the present invention;

fig. 2 is a schematic top view of the vacuum load switch according to the present invention;

fig. 3 is a schematic structural section view of the a-a section of the vacuum load switch according to the present invention.

Illustration of the drawings:

1. a rotating wheel; 2. a limiting groove; 3. a limiting bump; 4. isolating the knife switch; 5. a first ceramic tube; 6. sheathing; 7. a base; 8. a transmission gear plate; 9. an engagement groove; 10. a second ceramic tube; 11. an electrode; 12. a first chute; 13. a transmission rod; 14. a compression spring; 15. a slider; 16. a third ceramic tube; 17. a fourth ceramic tube; 18. a second chute; 19. a clamping block; 20. a piston sleeve; 21. a slide bar; 22. a vacuum chamber; 23. and a third chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the vacuum load switch comprises a base 7, a first ceramic tube 5, a third ceramic tube 16 and a fourth ceramic tube 17 which are welded on the upper end surface of the base 7, a second ceramic tube 10 is welded on the central shaft of the first ceramic tube 5 on the lower end surface of the base 7, it is characterized in that a first chute 12 is arranged in the base 7, a transmission rod 13 is connected in the first chute 12 in a sliding manner, a rotating wheel 1 is welded on the surface wall of one side of the transmission rod 13 far away from the first ceramic tube 5, three sleeve plates 6 are connected in the base 7 in a sliding manner, inner cavities at the tops of the three sleeve plates 6 are respectively clamped with the surface walls of the three first ceramic tubes 5, and the inner cavities at the bottoms of the three sleeve plates 6 are all provided with meshing grooves 9, the three sleeve plates 6 are all connected with the base 7 in a sliding way, the lateral surface wall of the transmission rod 13 is welded with three transmission gear discs 8, so that the driving gear wheel 8 drives the sleeve plate 6 to move towards the top through the meshing groove 9, thereby disconnecting the power supply.

Specifically, as shown in fig. 1, a limiting groove 2 is formed inside one side of the base 7 close to the rotating wheel 1, a limiting lug 3 is welded on the outer surface wall of the transmission rod 13, and the limiting lug 3 is clamped with the limiting groove 2, so that the transmission rod 13 is clamped by the limiting groove 2, and the transmission rod 13 is prevented from slipping.

Specifically, as shown in fig. 2, a second sliding groove 18 is formed in the base 7, a sliding block 15 is connected to the inside of the second sliding groove 18 in a sliding manner, the sliding block 15 is elastically connected with the second sliding groove 18 through a compression spring 14, and the sliding block 15 is connected with the limiting convex block 3 in a clamping manner, so that the limiting convex block 3 is clamped, and the rotating wheel 1 is conveniently rotated to drive the transmission gear disc 8 to rotate.

Specifically, as shown in fig. 3, a sliding rod 21 is in clearance fit with an inner cavity of the third ceramic tube 16, a piston sleeve 20 is welded on a side surface wall of the sliding rod 21, the piston sleeve 20 is in transition fit with the inner cavity of the third ceramic tube 16, a vacuum chamber 22 is arranged between the second ceramic tube 10 and the third ceramic tube 16, an electrode 11 penetrating through the second ceramic tube 10 is welded at a central axis inside the second ceramic tube 10, an upper end surface of the electrode 11 is attached to a lower end surface of the sliding rod 21, and an upper end surface of the electrode 11 is located inside the vacuum chamber 22, so that when the electrode 11 is disconnected from the sliding rod 21, electric arc is weakened by the vacuum chamber 22, and danger caused by exposure of the electric.

Specifically, as shown in fig. 3, the upper end surface of the sliding rod 21 is rotatably connected with the isolation switch blade 4 through a rotating shaft, the upper end surface of the first ceramic tube 5 is rotatably connected with the isolation switch blade 4 through a rotating shaft, the third sliding groove 23 is formed in the upper end surface of the fourth ceramic tube 17, one side, close to the fourth ceramic tube 17, of the isolation switch blade 4 is rotatably connected with a fixture block 19 through a rotating shaft, the fixture block 19 is slidably connected with the third sliding groove 23, the isolation switch blade 4 is driven to slide in the third sliding groove 23 when moving to the top, the isolation switch blade 4 is rotated until the fixture block 19 is separated from the third sliding groove 23, and therefore the distance between the isolation switch blade 4 and the third sliding groove 23 is increased.

Specifically, as shown in fig. 1, the middle meshing groove 9 of the three meshing grooves 9 is meshed with the transmission gear disc 8, the left meshing groove 9 is located on the right side of the transmission gear disc 8 close to the left meshing groove, and the right meshing groove 9 is located on the left side of the transmission gear disc 8 close to the right meshing groove, so that the three meshing grooves 9 are respectively meshed with the transmission gear disc 8, and the circuits are conveniently separated and adjusted.

The working principle is as follows: when the ceramic tube cutting device is used, firstly, the rotating wheel 1 is rotated, the sleeve plate 6 is driven to slide by the rotating wheel 1 through the transmission rod 13 through the meshed connection between the transmission gear disc 8 and the meshed groove 9, so that the sleeve plate 6 pushes the first ceramic tube 5 to move towards the top, the isolation switch blade 4 moves towards the top, the clamping block 19 slides in the third sliding groove 23 at the moment, meanwhile, the sliding rod 21 slides in the third ceramic tube 16 through the piston sleeve 20, so that the contact between the sliding rod 21 and the electrode 11 is disconnected, and the base 7 is prevented from being burnt by electric arcs generated in disconnection through the vacuum chamber 22; secondly, when the fixture block 19 is separated from the inside of the third sliding groove 23, the isolating switch blade 4 is driven to rotate by the gravity of the sliding rod 21, at the moment, the sliding rod 21 is attached to the electrode 11 again, so that electric arcs cannot be generated outside when the power supply is disconnected physically, the safety is improved, finally, the transmission rod 13 is pushed through the welding of the rotating wheel 1 and the transmission rod 13, the transmission rod 13 drives the transmission gear disc 8 closest to the rotating wheel 1 to be meshed with the meshing groove 9, at the moment, the rest two transmission gear discs 8 are not meshed with the meshing groove 9, meanwhile, the limiting lug 3 is separated from the clamping of the sliding block 15, the first ceramic pipe 5 close to the rotating wheel 1 is driven to disconnect the power supply when the rotating wheel 1 is rotated, accurate adjustment on three power supply paths is achieved, and the power supply disconnection is controlled.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A vacuum load switch comprises a base (7), a first ceramic tube (5), a third ceramic tube (16) and a fourth ceramic tube (17), wherein the first ceramic tube (5), the third ceramic tube (16) and the fourth ceramic tube are welded on the upper end face of the base (7), the second ceramic tube (10) is welded on the central shaft of the first ceramic tube (5) on the lower end face of the base (7), the vacuum load switch is characterized in that a first sliding groove (12) is formed in the base (7), a transmission rod (13) is connected in the first sliding groove (12) in a sliding manner, a rotating wheel (1) is welded on the side surface wall of one side, far away from the first ceramic tube (5), of the transmission rod (13), three sleeve plates (6) are connected in the base (7) in a sliding manner, inner cavities at the tops of the three sleeve plates (6) are respectively clamped with the side surface walls of the three first ceramic tubes (5), meshing grooves (9) are formed in the inner cavities at the bottoms of the three, and three transmission gear discs (8) are welded on the lateral surface wall of the transmission rod (13).

2. The vacuum load switch according to claim 1, wherein a limiting groove (2) is formed in one side of the base (7) close to the rotating wheel (1), a limiting lug (3) is welded on the outer surface wall of the transmission rod (13), and the limiting lug (3) is clamped with the limiting groove (2).

3. The vacuum load switch according to claim 1, wherein a second sliding groove (18) is formed in the base (7), a sliding block (15) is connected to the inside of the second sliding groove (18) in a sliding manner, the sliding block (15) is elastically connected with the second sliding groove (18) through a compression spring (14), and the sliding block (15) is clamped with the limit bump (3).

4. The vacuum load switch according to claim 1, wherein a sliding rod (21) is in clearance fit with an inner cavity of the third ceramic tube (16), a piston sleeve (20) is welded on a side surface wall of the sliding rod (21), the piston sleeve (20) is in transition fit with the inner cavity of the third ceramic tube (16), a vacuum chamber (22) is arranged between the second ceramic tube (10) and the third ceramic tube (16), an electrode (11) penetrating through the second ceramic tube (10) is welded at a central axis inside the second ceramic tube (10), an upper end face of the electrode (11) is attached to a lower end face of the sliding rod (21), and an upper end face of the electrode (11) is located inside the vacuum chamber (22).

5. The vacuum load switch according to claim 4, wherein the upper end surface of the sliding rod (21) is rotatably connected with the isolation switch blade (4) through a rotating shaft, the upper end surface of the first ceramic tube (5) is rotatably connected with the isolation switch blade (4) through a rotating shaft, the upper end surface of the fourth ceramic tube (17) is provided with a third sliding groove (23), one side of the isolation switch blade (4) close to the fourth ceramic tube (17) is rotatably connected with a fixture block (19) through a rotating shaft, and the fixture block (19) is slidably connected with the third sliding groove (23).

6. The vacuum load switch according to claim 1, wherein the middle engaging groove (9) of the three engaging grooves (9) is engaged with the transmission gear plate (8), the engaging groove (9) on the left side is positioned on the right side of the adjacent transmission gear plate (8), and the engaging groove (9) on the right side is positioned on the left side of the adjacent transmission gear plate (8).