CN220020964U

CN220020964U - Isolation earthing switch

Info

Publication number: CN220020964U
Application number: CN202321019248.3U
Authority: CN
Inventors: 陈斌; 侯银顺; 王礼君
Original assignee: Zhejiang Zhengtai Electric Technology Co ltd
Current assignee: Zhejiang Zhengtai Electric Technology Co ltd
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-11-14
Anticipated expiration: 2033-04-26

Abstract

The utility model provides an isolated grounding switch, which belongs to the field of switch equipment and comprises an isolated switch main shaft and a transmission part, wherein the isolated switch main shaft is movably arranged and is provided with a first output part and a second output part, the first output part is connected with the isolated switch, and the second output part is connected with a transmission input end of the transmission part so that the isolated switch main shaft drives the isolated switch to be in a first opening state or a second opening state or a first closing state; the transmission output end of the transmission component and the grounding switch are connected with the grounding switch main shaft; the transmission part has an idle stroke state and a working stroke state; when the transmission part is in an idle stroke state, the transmission part does not drive the grounding switch main shaft to move in the moving process. The isolation grounding switch is simple to operate, and solves the problems that the isolation grounding switch in the prior art is complex to operate when realizing three stations and is prone to occurrence of misoperation risks.

Description

Isolation earthing switch

Technical Field

The utility model relates to the field of switching equipment, in particular to an isolated grounding switch.

Background

In the prior art, there are two implementation methods for isolating the isolating switch from the grounding switch: 1. the three stations are realized through the interlocking connection of the operation mechanism and the operation mechanism through the operation holes of the operation mechanism; 2. the isolation and grounding switch is operated by a single mechanism to realize two stations.

If the first mode is adopted, two operation holes are required to be arranged on the operation panel, the operation is complex, and once the interlocking fails, the risk of misoperation exists; if the second mode is adopted, the isolating grounding switch can only realize two stations, and the grounding switch is also in a switching-off state when the isolating switch cannot be switched off, so that the selection of a user on the running state of equipment is reduced.

Disclosure of Invention

The utility model mainly aims to provide an isolated grounding switch, which solves the problems that the isolated grounding switch in the prior art is complex to operate and is easy to cause misoperation risk when realizing three stations.

In order to achieve the above purpose, the utility model provides an isolating grounding switch, which comprises an isolating switch, a grounding switch, an isolating switch main shaft, a transmission part and a grounding switch main shaft, wherein the isolating switch main shaft is movably arranged, the isolating switch main shaft is provided with a first output part and a second output part, the first output part is connected with the isolating switch, and the second output part is connected with a transmission input end of the transmission part, so that the isolating switch main shaft drives the isolating switch to be in a first opening state or a second opening state or a first closing state; the transmission output end of the transmission part and the grounding switch are connected with the grounding switch main shaft; the transmission part has an idle stroke state and a working stroke state; when the transmission part is in an idle stroke state, the transmission part does not drive the grounding switch main shaft to move in the moving process; when the transmission part is in a working stroke state, the transmission part drives the grounding switch to be in a second switching-on state or a third switching-off state through the grounding switch main shaft.

Further, the isolating grounding switch further comprises a first rotating arm, two ends of the first rotating arm are respectively connected with the first output part and the isolating switch, and the first output part drives the isolating switch to move through the first rotating arm; when the isolating switch is in a first opening state, the grounding switch is in a third opening state; when the isolating switch is in a second switching-off state, the grounding switch is in a second switching-on state; when the isolating switch is in the first switching-on state, the grounding switch is in the third switching-off state.

Further, the transmission part comprises a second rotating arm and a third rotating arm, one end of the second rotating arm forms a transmission input end of the transmission part, the other end of the second rotating arm is hinged with one end of the third rotating arm, and the other end of the third rotating arm forms a transmission output end of the transmission part.

Further, the transmission part further comprises a pull rod, one end of the pull rod is hinged with the other end of the second rotating arm, and the other end of the pull rod is hinged with one end of the third rotating arm, so that the second rotating arm is connected with the third rotating arm through the pull rod.

Further, the pull rod comprises a first pull rod and a second pull rod, one end of the first pull rod, which is far away from the second pull rod, forms one end of the pull rod, the other end of the second pull rod, which is far away from the first pull rod, forms the other end of the pull rod, the first pull rod and the second pull rod extend along the same preset direction, and the length of the first pull rod is adjustably arranged on the second pull rod.

Further, the first pull rod is telescopically inserted into the end part of the second pull rod relative to the second pull rod; or the second pull rod is telescopically inserted into the end part of the first pull rod relative to the first pull rod; to adjust the overall length of the first and second tie rods.

Further, a first threaded section is arranged at one end, close to the second pull rod, of the first pull rod along the extending direction of the first pull rod, and a first internal threaded hole matched with the first threaded section is arranged at one end, close to the first pull rod, of the second pull rod along the extending direction of the second pull rod; or one end of the second pull rod, which is close to the first pull rod, is provided with a second threaded section along the extending direction of the second threaded section, and one end of the first pull rod, which is close to the second pull rod, is provided with a second internal threaded hole matched with the second threaded section along the extending direction of the first pull rod.

Further, the isolating earthing switch further comprises: the locking part is movably arranged on the mounting plate and is provided with a locking position and an avoiding position; the locking matching part is matched with the locking part, the locking matching part is sleeved on the isolating switch main shaft, the isolating switch main shaft drives the locking matching part to rotate, the locking matching part is positioned at the side part of the mounting plate, and the locking part and the locking matching part are oppositely arranged; when the locking part is in the locking position, the locking part is in locking fit with the locking fit part so as to limit the isolating switch in a first opening state or a second opening state or a first closing state, and limit the grounding switch in a second closing state or a third opening state; when the locking part is at the avoiding position, the locking part is away from the locking matching part so as to enable the main shaft of the isolating switch to move.

Further, the isolating earthing switch further comprises: the two ends of the limiting elastic piece are respectively connected with the stand and the isolating switch main shaft, and the limiting elastic piece is in a natural state and a compression state; when the locking part is at the avoiding position, the limiting elastic piece is in a compressed state; when the isolating switch is limited in the second switching-off state or the first switching-on state, the limiting elastic piece is in a natural state.

Further, the isolating earthing switch further comprises: the fourth rotating arm is sleeved on the isolating switch main shaft, the fourth rotating arm and the first rotating arm are arranged at intervals along the axial direction of the isolating switch main shaft, and one end of the fourth rotating arm, which is far away from the isolating switch main shaft, is hinged with the limiting elastic piece so as to drive the limiting elastic piece to be in a compressed state or a natural state through the fourth rotating arm; the fourth rotating arm extends along a first preset direction, and the limiting elastic piece stretches along a second preset direction; when the fourth rotating arm rotates to a position enabling the first preset direction and the second preset direction to form a preset angle, the limiting elastic piece is in a natural state to limit the isolating switch main shaft.

According to the utility model, the isolating switch, the grounding switch, the isolating switch main shaft, the transmission part and the grounding switch main shaft are arranged, so that the isolating grounding switch can be effectively linked, and three stations are realized; meanwhile, the transmission part has an idle stroke state, and can drive the isolating switch main shaft to move in a section of process of the isolating switch main shaft, so that the transmission part does not drive the grounding switch main shaft to move, and further the grounding switch main shaft does not drive the grounding switch to move, thereby improving the safety of the isolating grounding switch and the personal safety of operators, and the isolating grounding switch is simple to operate, and solves the problems that the isolating grounding switch in the prior art is complex to operate and easy to have misoperation risks when realizing three stations.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic perspective view of an isolated grounding switch according to the present utility model;

FIG. 2 is a schematic diagram showing a first view angle structure of the isolated grounding switch of FIG. 1;

FIG. 3 illustrates a second perspective structural schematic diagram of the isolation grounding switch of FIG. 1 with the chassis removed;

fig. 4 shows a partial enlarged view at a of the isolated ground switch of fig. 3.

Wherein the above figures include the following reference numerals:

1. an isolating switch; 101. isolating the knife switch; 102. isolating the stationary contact; 2. a grounding switch; 201. a grounding disconnecting link; 202. a grounding stationary contact; 3. isolating switch main shaft; 401. a locking part; 402. a locking mating part; 403. a limiting pin; 404. a limiting plate; 405. a limiting hole; 5. a first rotating arm; 6. a fourth rotating arm; 7. a transmission member; 701. a second rotating arm; 702. a third rotating arm; 703. a pull rod; 704. a first pull rod; 705. a second pull rod; 8. a grounding switch main shaft; 9. a mounting plate; 10. a frame; 11. a limit elastic member; 12. an insulating pull rod; 13. and (3) a nut.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 4, the present utility model provides an isolated grounding switch comprising: the isolating switch 1, the grounding switch 2, the isolating switch main shaft 3, the transmission part 7 and the grounding switch main shaft 8, wherein the isolating switch main shaft 3 is movably arranged, the isolating switch main shaft 3 is provided with a first output part and a second output part, the first output part is connected with the isolating switch 1, and the second output part is connected with the transmission input end of the transmission part 7, so that the isolating switch main shaft 3 drives the isolating switch 1 to be in a first opening state or a second opening state or a first closing state; the transmission output end of the transmission part 7 and the grounding switch 2 are connected with a grounding switch main shaft 8. Wherein the transmission part 7 has a idle stroke state and a working stroke state; when the transmission part 7 is in an idle stroke state, the transmission part 7 does not drive the grounding switch main shaft 8 to move in the moving process; when the transmission part 7 is in the working stroke state, the transmission part 7 drives the grounding switch 2 to be in the second closing state or the third opening state through the grounding switch main shaft 8.

The utility model provides an isolating grounding switch which comprises an isolating switch 1, a grounding switch 2, an isolating switch main shaft 3, a transmission part 7 and a grounding switch main shaft 8, wherein the isolating switch main shaft 3 is movably arranged, the isolating switch main shaft 3 is provided with a first output part and a second output part, the first output part is connected with the isolating switch 1, and the second output part is connected with the transmission input end of the transmission part 7, so that the isolating switch main shaft 3 drives the isolating switch 1 to be in a first opening state or a second opening state or a first closing state; the transmission output end of the transmission part 7 and the grounding switch 2 are connected with a grounding switch main shaft 8. Wherein the transmission part 7 has a idle stroke state and a working stroke state; when the transmission part 7 is in an idle stroke state, the transmission part 7 does not drive the grounding switch main shaft 8 to move in the moving process; when the transmission part 7 is in the working stroke state, the transmission part 7 drives the grounding switch 2 to be in the second closing state or the third opening state through the grounding switch main shaft 8.

Therefore, the isolating switch 1, the grounding switch 2, the isolating switch main shaft 3, the transmission part 7 and the grounding switch main shaft 8 are arranged, so that the isolating grounding switch can be effectively linked, and three stations are realized; meanwhile, the transmission part 7 has an idle stroke state, and can drive the isolating switch 1 to move in one section of process of the isolating switch main shaft 3, so that the transmission part 7 does not drive the grounding switch main shaft 8 to move, and then the grounding switch main shaft 8 does not drive the grounding switch 2 to move, thereby improving the safety of the isolating grounding switch and the personal safety of operators.

In this embodiment, as shown in fig. 1 to 3, the isolating earthing switch further includes a first rotating arm 5, two ends of the first rotating arm 5 are respectively connected with a first output part and the isolating switch 1, and the first output part drives the isolating switch 1 to move through the first rotating arm 5. When the isolating switch 1 is in the first opening state, the grounding switch 2 is in the third opening state; when the isolating switch 1 is in a second switching-off state, the grounding switch 2 is in a second switching-on state; when the isolating switch 1 is in the first closing state, the grounding switch 2 is in the third opening state.

In the actual working process, when the first output part of the isolating switch main shaft 3 drives the isolating switch 1 to move from a first closing state to a first opening state, the second output part of the isolating switch main shaft 3 drives the transmission part 7 to be in an idle stroke state, and the idle stroke state is that the transmission part 7 does not drive the grounding switch main shaft 8 to move in the part of the process that the second output part of the isolating switch main shaft 3 drives the transmission part 7 to move, so that the grounding switch 2 is still in a third opening state; when the first output part of the isolating switch main shaft 3 drives the isolating switch 1 to start moving from the first opening state to the second opening state, the second output part of the isolating switch main shaft 3 drives the transmission part 7 to be in a working stroke state, and the working stroke state is that when the second output part of the isolating switch main shaft 3 drives the transmission part 7 to run out of the idle stroke, the transmission part 7 drives the grounding switch main shaft 8 to move, and then the grounding switch main shaft 8 drives the grounding switch 2 to move to the second closing state.

The first opening state of the isolating switch 1 is that the isolating switch 1 starts to open, but the opening angle does not reach a first preset angle capable of triggering the grounding switch 2 to close. The second opening state of the isolating switch 1 is that the isolating switch 1 finishes opening action, and the opening angle reaches a second preset angle for ensuring that the isolating switch 1 is completely powered off.

In the specific implementation process, as shown in fig. 1 to 3, the transmission part 7 includes a second rotating arm 701 and a third rotating arm 702, one end of the second rotating arm 701 forms a transmission input end of the transmission part 7, the other end of the second rotating arm 701 is hinged with one end of the third rotating arm 702, and the other end of the third rotating arm 702 forms a transmission output end of the transmission part 7.

In a specific implementation process, as shown in fig. 1 and 2, the transmission part 7 further includes a pull rod 703, one end of the pull rod 703 is hinged to the other end of the second rotating arm 701, and the other end of the pull rod 703 is hinged to one end of the third rotating arm 702, so that the second rotating arm 701 is connected to the third rotating arm 702 through the pull rod 703.

In the specific implementation process, as shown in fig. 1 and 2, the pull rod 703 includes a first pull rod 704 and a second pull rod 705, one end of the first pull rod 704 away from the second pull rod 705 forms one end of the pull rod 703, one end of the second pull rod 705 away from the first pull rod 704 forms the other end of the pull rod 703, the first pull rod 704 and the second pull rod 705 all extend along the same preset direction, and the length of the first pull rod 704 is adjustably arranged on the second pull rod 705.

Further, the first pull rod 704 is telescopically inserted into the end of the second pull rod 705 relative to the second pull rod 705; or the second pull rod 705 is telescopically inserted at the end of the first pull rod 704 relative to the first pull rod 704; to adjust the overall length of the first and second tension rods 704, 705. With such an arrangement, the installation and the removal of the first pull rod 704 and the second pull rod 705 are facilitated, and the distance of the idle stroke (i.e., the starting position of the idle stroke) is adjusted according to the actual installation situation by adjusting the overall lengths of the first pull rod 704 and the second pull rod 705, so that the idle stroke state is ensured to be in the preset range.

Wherein, the first pull rod 704 is provided with first screw thread section along its extending direction near the one end of second pull rod 705, and the one end of second pull rod 705 is provided with first internal thread hole that cooperates with first screw thread section along its extending direction near first pull rod 704 to be located the different degree of depth department of first internal thread hole through first screw thread section and adjust the overall length of first pull rod 704 and second pull rod 705.

Alternatively, the end of the second pull rod 705 near the first pull rod 704 is provided with a second threaded section along the extending direction thereof, and the end of the first pull rod 704 near the second pull rod 705 is provided with a second internal threaded hole matched with the second threaded section along the extending direction thereof, so that the total length of the first pull rod 704 and the second pull rod 705 is adjusted by the different depths of the second threaded section in the second internal threaded hole.

Further, as shown in fig. 2, a nut 13 is further disposed at the connection position of the first pull rod 704 and the second pull rod 705, the nut 13 is matched with the first threaded section of the first pull rod 704, and the first threaded section of the first pull rod 704 passes through the nut 13 to be in threaded connection with the first internal threaded hole of the second pull rod 705. Alternatively, the nut 13 is adapted to a second threaded section of the second pull rod 705, the second threaded section of the second pull rod 705 being threaded through the nut to a second internally threaded bore of the first pull rod 704. This arrangement is used to increase friction and locking force by the nut 13 to secure the connection between the first pull rod 704 and the second pull rod 705.

In a specific implementation process, as shown in fig. 1 to 3, the grounding switch 2 includes a grounding switch 201, and the grounding switch 201 is sleeved on the grounding switch spindle 8, so that the grounding switch spindle 8 drives the grounding switch 201 to move.

In a specific implementation process, as shown in fig. 2, the grounding switch 2 further includes a grounding static contact 202, the grounding static contact 202 is disposed at a side portion of the grounding switch 201, when the grounding switch main shaft 8 drives the grounding switch 201 to contact with the grounding static contact 202, the grounding switch 2 is in a second switching-on state, and when the grounding switch main shaft 8 drives the grounding switch 201 to separate from the grounding static contact 202, the grounding switch 2 is in a second switching-off state.

In the actual working process, the number of the grounding static contacts 202 and the grounding disconnecting links 201 is plural, the grounding static contacts 202 and the grounding disconnecting links 201 are arranged in one-to-one correspondence, and the grounding disconnecting links 201 are arranged at intervals along the axial direction of the grounding switch main shaft 8 so as to drive the grounding disconnecting links 201 to be in a second closing state or a second opening state through the grounding switch main shaft 8.

In this embodiment, as shown in fig. 3 and 4, the isolating and grounding switch further includes a mounting plate 9, a locking portion 401, and a locking mating portion 402, where the locking portion 401 is movably disposed on the mounting plate 9, and the locking portion 401 has a locking position and an avoidance position; the locking matching part 402 is matched with the locking part 401, the locking matching part 402 is sleeved on the isolating switch main shaft 3, the isolating switch main shaft 3 drives the locking matching part 402 to rotate, the locking matching part 402 is positioned on the side part of the mounting plate 9, and the locking part 401 and the locking matching part 402 are oppositely arranged.

When the locking part 401 is at the locking position, the locking part 401 and the locking matching part 402 perform locking matching to limit the isolating switch 1 in a first opening state or a second opening state or a first closing state, and limit the grounding switch 2 in a second closing state or a third opening state; when the locking portion 401 is at the escape position, the locking portion 401 escapes from the locking engagement portion 402 to move the disconnecting switch main shaft 3.

In the actual working process, the isolating switch main shaft 3 can drive the isolating switch 1 and the grounding switch 2 to switch different states. When the isolating switch main shaft 3 drives the isolating switch 1 to move to a first switching-on state, the isolating switch main shaft 3 drives the grounding switch 2 to move to a third switching-off state; when the isolating switch main shaft 3 drives the isolating switch 1 to move to the first opening state, the grounding switch 2 is still in the third opening state; when the isolating switch main shaft 3 drives the isolating switch 1 to move to the second switching-off state, the isolating switch main shaft 3 drives the grounding switch 2 to move to the second switching-on state.

Meanwhile, when the isolating switch 1 and the grounding switch 2 are in the corresponding states, the locking part 401 is at the locking position, so that the locking part 401 and the locking matching part 402 are limited, and the isolating switch 1 and the grounding switch 2 are limited in the corresponding states, so that the interlocking performance of the isolating grounding switch is ensured, and the occurrence of the condition of failure of interlocking is avoided.

In the specific implementation process, as shown in fig. 4, the locking part 401 includes a limiting pin 403, and the limiting pin 403 is movably inserted on the mounting plate 9; the locking matching part 402 comprises a limiting plate 404, a plurality of limiting holes 405 are formed in the limiting plate 404, and the limiting holes 405 are arranged at intervals along the rotation direction of the isolating switch main shaft 3 so as to lock and match the locking matching part 402 when the limiting pin 403 is inserted into one of the limiting holes 405.

In the actual working process, the isolating switch main shaft 3 is rotatably inserted on the mounting plate 9, and an operator is positioned on one side of the mounting plate 9 away from the isolating switch 1 to rotate the isolating switch main shaft 3 for subsequent work.

In this embodiment, as shown in fig. 1 and 2, the isolating and grounding switch further includes a frame 10 and a limiting elastic member 11, two ends of the limiting elastic member 11 are respectively connected with the frame 10 and the isolating switch main shaft 3, and the limiting elastic member 11 has a natural state and a compressed state.

Wherein, when the locking part 401 is at the avoiding position, the limiting elastic piece 11 is in a compressed state; when the isolating switch 1 is limited in the second opening state or the first closing state, the limiting elastic piece 11 is in a natural state.

In the implementation process, as shown in fig. 1 and 3, the isolated grounding switch further includes: the fourth rotating arm 6 is sleeved on the isolating switch main shaft 3, the fourth rotating arm 6 and the first rotating arm 5 are arranged at intervals along the axial direction of the isolating switch main shaft 3, and one end, away from the isolating switch main shaft 3, of the fourth rotating arm 6 is hinged with the limiting elastic piece 11 so as to drive the limiting elastic piece 11 to be in a compressed state or a natural state through the fourth rotating arm 6.

The fourth rotating arm 6 extends along a first preset direction, and the limiting elastic piece 11 stretches along a second preset direction; when the fourth rotating arm 6 rotates to a position where the first preset direction and the second preset direction form a preset angle, the limiting elastic piece 11 is in a natural state to limit the isolating switch main shaft 3.

Specifically, a first connection point is set at a position where the fourth rotating arm 6 coincides with the axis of the isolating switch spindle 3, a second connection point is set at a position where the fourth rotating arm 6 coincides with the axis of the limiting elastic piece 11, and the extending direction of a connection line between the first connection point and the second connection point is a first preset direction; the direction in which the limiting elastic member 11 stretches and contracts is a second preset direction.

Preferably, the limit elastic member 11 is a spring.

In a specific implementation process, the isolating grounding switch further comprises an insulating pull rod 12, one end of the insulating pull rod 12 is hinged to the first rotating arm 5, the other end of the insulating pull rod 12 is connected with the isolating switch 1, and the first rotating arm 5 is connected with the isolating switch 1 through the insulating pull rod 12.

In the actual working process, the first rotating arms 5 and the insulating pull rods 12 are multiple, the first rotating arms 5 and the insulating pull rods 12 are in one-to-one correspondence, the first rotating arms 5 are arranged at intervals along the axial direction of the isolating switch main shaft 3, and the fourth rotating arm 6 is arranged between two adjacent first rotating arms 5.

In a specific implementation process, the isolating switch 1 comprises an isolating disconnecting link 101 and isolating static contacts 102 arranged in pairs, wherein the isolating static contacts 102 arranged in pairs are respectively arranged at the top and the bottom of the frame 10; one end of the isolation disconnecting link 101 is hinged with an isolation fixed contact 102 arranged at the top of the frame 10, and the other end of the isolation disconnecting link 101 is movably connected with the isolation fixed contact 102 arranged at the bottom of the frame 10; one end of the insulating pull rod 12, which is far away from the first rotating arm 5, is fixedly arranged on the side wall of the isolating switch 101, so that the isolating switch 101 is driven to be in a first switching-off state or a second switching-off state or a first switching-on state through the insulating pull rod 12.

When the insulation pull rod 12 drives the isolation disconnecting link 101 to be in a first disconnecting state and a second disconnecting state, the isolation disconnecting link 101 is separated from an isolation static contact 102 arranged at the bottom of the frame 10; when the insulating pull rod 12 drives the isolating switch 101 to be in the first closing state, the isolating switch 101 is contacted with the isolating stationary contact 102 arranged at the bottom of the stand 10.

In the actual working process, the isolating knife switches 101 are multiple, the isolating static contacts 102 are multiple pairs, the isolating static contacts 102 are arranged at intervals along the horizontal direction of the frame, the isolating knife switches 101 are arranged in one-to-one correspondence with the isolating static contacts 102, and the insulating pull rods 12 are arranged on the side walls of the isolating knife switches 101 in one-to-one correspondence.

When the operator does not rotate the isolating switch main shaft 3 any more, the isolating switch 1 is in a first closing state, the grounding switch is in a third opening state, and when the operator needs to move the isolating switch 1 to a second opening state, the grounding switch 2 is in the second closing state, the working process of the isolating grounding switch is as follows:

when an operator operates the isolating switch main shaft 3 to rotate clockwise, the first rotating arm 5 is driven to rotate clockwise, so that the insulating pull rod 12 is driven to move towards the isolating switch 101, and one end of the isolating switch 101 is driven to be separated from the isolating static contact 102 arranged at the bottom of the stand 10 (namely, the isolating switch 101 moves from a first closing state to a first opening state), at the moment, the isolating switch main shaft 3 drives the transmission part 7 to be in an idle stroke state, and meanwhile, the grounding switch 2 is in a second opening and closing state.

When the isolating switch main shaft 3 continues to rotate clockwise, the isolating switch 101 is driven by the insulating pull rod 12 to continue to separate (i.e. the isolating switch 101 moves from the first opening state to the second opening state), at this time, the isolating switch main shaft 3 drives the transmission component 7 to be in a working stroke state, and at the same time, the grounding switch 2 moves from the third opening state to the second closing state.

When the isolating switch 1 is in the second switching-off state and the grounding switch 2 is in the second switching-on state, the operator inserts the limiting pin 403 into the corresponding limiting hole 405 to limit the isolating switch 1 in the second switching-off state and limit the grounding switch 2 in the second switching-on state. At the same time, the limit elastic member 11 is in a natural state, and plays an auxiliary locking role for the locking portion 401 and the locking mating portion 402.

The working process of the transmission part 7 in the idle stroke state is as follows:

when the disconnecting switch main shaft 3 rotates clockwise, the second rotating arm 701 is driven to rotate clockwise, so that the second rotating arm 701 drives the third rotating arm 702 to rotate anticlockwise relative to the grounding switch main shaft 8 through the pull rod 703, and at the moment, the third rotating arm 702 does not drive the grounding switch main shaft 8 to move; after the disconnecting switch main shaft 3 continues to rotate clockwise after rotating anticlockwise by a preset angle, the second rotating arm 701 drives the third rotating arm 702 to rotate clockwise through the pull rod 703, and in the process that the third rotating arm 702 rotates clockwise to the initial position of the third rotating arm 702, the third rotating arm 702 still does not drive the grounding switch main shaft 8 to move, and after rotating clockwise to the initial position of the third rotating arm 702, the grounding switch main shaft 8 is driven to rotate.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An isolating earthing switch, comprising an isolating switch (1) and an earthing switch (2), characterized in that the isolating earthing switch further comprises:

the isolating switch main shaft (3) is movably arranged, the isolating switch main shaft (3) is provided with a first output part and a second output part, the first output part is connected with the isolating switch (1), and the second output part is connected with a transmission input end of the transmission part (7), so that the isolating switch main shaft (3) drives the isolating switch (1) to be in a first opening state or a second opening state or a first closing state;

the grounding switch main shaft (8), and a transmission output end of the transmission component (7) and the grounding switch (2) are connected with the grounding switch main shaft (8);

wherein the transmission part (7) has a free travel state and a working travel state; when the transmission part (7) is in the idle stroke state, the transmission part (7) does not drive the grounding switch main shaft (8) to move in the moving process; when the transmission part (7) is in the working stroke state, the transmission part (7) drives the grounding switch (2) to be in a second closing state or a third opening state through the grounding switch main shaft (8).

2. The isolating and grounding switch according to claim 1, further comprising a first rotating arm (5), wherein two ends of the first rotating arm (5) are respectively connected with the first output part and the isolating switch (1), and the first output part drives the isolating switch (1) to move through the first rotating arm (5);

when the isolating switch (1) is in the first switching-off state, the grounding switch (2) is in the third switching-off state; when the isolating switch (1) is in the second switching-off state, the grounding switch (2) is in the second switching-on state; when the isolating switch (1) is in the first switching-on state, the grounding switch (2) is in the third switching-off state.

3. The isolated grounding switch according to claim 2, characterized in that the transmission member (7) comprises a second rotating arm (701) and a third rotating arm (702), one end of the second rotating arm (701) forming a transmission input of the transmission member (7), the other end of the second rotating arm (701) being hinged to one end of the third rotating arm (702), the other end of the third rotating arm (702) forming a transmission output of the transmission member (7).

4. An earthing switch according to claim 3, characterized in that the transmission member (7) further comprises a pulling rod (703), one end of the pulling rod (703) being hinged to the other end of the second rotating arm (701), the other end of the pulling rod (703) being hinged to one end of the third rotating arm (702), so that the second rotating arm (701) is connected to the third rotating arm (702) through the pulling rod (703).

5. The isolated grounding switch according to claim 4, wherein the pull rod (703) comprises a first pull rod (704) and a second pull rod (705), wherein an end of the first pull rod (704) remote from the second pull rod (705) forms an end of the pull rod (703), wherein an end of the second pull rod (705) remote from the first pull rod (704) forms the other end of the pull rod (703), wherein the first pull rod (704) and the second pull rod (705) both extend along the same preset direction, and wherein the first pull rod (704) is provided with an adjustable length on the second pull rod (705).

6. The isolated grounding switch according to claim 5, characterized in that said first pull rod (704) is telescopically inserted in an end of said second pull rod (705) with respect to said second pull rod (705); or the second pull rod (705) is telescopically inserted at the end part of the first pull rod (704) relative to the first pull rod (704); to adjust the overall length of the first pull rod (704) and the second pull rod (705).

7. The isolating and grounding switch according to claim 6, characterized in that one end of the first pull rod (704) close to the second pull rod (705) is provided with a first threaded section along the extending direction thereof, and one end of the second pull rod (705) close to the first pull rod (704) is provided with a first internal threaded hole matched with the first threaded section along the extending direction thereof; or alternatively

The second threaded section is arranged at one end, close to the first pull rod (704), of the second pull rod (705) along the extending direction of the second threaded section, and a second internal threaded hole matched with the second threaded section is arranged at one end, close to the second pull rod (705), of the first pull rod (704) along the extending direction of the second threaded section.

8. The isolated ground switch of any one of claims 2 to 7, further comprising:

a mounting plate (9) and a locking part (401), wherein the locking part (401) is movably arranged on the mounting plate (9), and the locking part (401) is provided with a locking position and an avoiding position;

the locking matching part (402) is matched with the locking part (401), the locking matching part (402) is sleeved on the isolating switch main shaft (3), the isolating switch main shaft (3) drives the locking matching part (402) to rotate, the locking matching part (402) is positioned at the side part of the mounting plate (9), and the locking part (401) and the locking matching part (402) are oppositely arranged;

when the locking part (401) is in the locking position, the locking part (401) is in locking fit with the locking fit part (402) so as to limit the isolating switch (1) in the first opening state or the second opening state or the first closing state, and limit the grounding switch (2) in the second closing state or the third opening state; when the locking part (401) is at the avoiding position, the locking part (401) is away from the locking matching part (402) so as to enable the isolating switch main shaft (3) to move.

9. The isolated ground switch of claim 8, further comprising:

the device comprises a frame (10) and a limiting elastic piece (11), wherein two ends of the limiting elastic piece (11) are respectively connected with the frame (10) and the isolating switch main shaft (3), and the limiting elastic piece (11) has a natural state and a compression state;

wherein, when the locking part (401) is at the avoiding position, the limiting elastic piece (11) is at the compression state; when the isolating switch (1) is limited in the second switching-off state or the first switching-on state, the limiting elastic piece (11) is in the natural state.

10. The isolated ground switch of claim 9, further comprising:

the fourth rotating arm (6) is sleeved on the isolating switch main shaft (3), the fourth rotating arm (6) and the first rotating arm (5) are arranged at intervals along the axial direction of the isolating switch main shaft (3), and one end, far away from the isolating switch main shaft (3), of the fourth rotating arm (6) is hinged with the limiting elastic piece (11) so as to drive the limiting elastic piece (11) to be in the compressed state or the natural state through the fourth rotating arm (6);

the fourth rotating arm (6) extends along a first preset direction, and the limiting elastic piece (11) stretches along a second preset direction; when the fourth rotating arm (6) rotates to a position enabling the first preset direction and the second preset direction to form a preset angle, the limiting elastic piece (11) is in the natural state to limit the isolating switch main shaft (3).