CN212570818U - Earthing switch for high-voltage switch cabinet maintenance - Google Patents
Earthing switch for high-voltage switch cabinet maintenance Download PDFInfo
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- CN212570818U CN212570818U CN202021404437.9U CN202021404437U CN212570818U CN 212570818 U CN212570818 U CN 212570818U CN 202021404437 U CN202021404437 U CN 202021404437U CN 212570818 U CN212570818 U CN 212570818U
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- grounding
- transmission shaft
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- rod
- fixed
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- 238000012423 maintenance Methods 0.000 title description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000003068 static effect Effects 0.000 claims description 10
- 241000722921 Tulipa gesneriana Species 0.000 claims description 5
- 238000002955 isolation Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 2
- 230000005283 ground state Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a high tension switchgear overhauls uses earthing switch, including casing and transmission shaft, the transmission shaft passes through the movable fit piece of fixing on the casing to be connected with the casing, is provided with the mechanism of closing of being connected with the transmission shaft in the casing. The utility model has simple structure and convenient use; the grounding and isolating states of the grounding switch are realized through the closing mechanism, and the requirement of GB1985-2014 for closing the short circuit for 5 times can be met; safe and reliable, convenient operation can satisfy the various requirements of the standard to operation and electrical appliances.
Description
Technical Field
The utility model belongs to the technical field of power transmission and distribution equipment, a high tension switchgear overhauls and uses earthing switch is related to.
Background
When the high-voltage switch cabinet is overhauled, in order to guarantee the safety of maintainers, the conductive part of the main loop must be grounded to ensure the safety, so that a grounding switch is required to be used. Because the main loop is electrified when the grounding switch is switched on, the grounding switch must have the capability of switching on and off the short-circuit current, but after the existing switch switches on and off the short-circuit current for many times, the switch is easy to lose efficacy, so that the equipment is damaged and cannot be used continuously.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high tension switchgear overhauls uses earthing switch can realize the conductive part ground connection of major loop through this earthing switch, can satisfy the requirement that GB1985-2014 short circuit closes 5 times simultaneously.
The technical scheme adopted by the utility model is that the earthing switch for the high-voltage switch cabinet maintenance comprises a shell and a transmission shaft, wherein the transmission shaft is connected with the shell through a movable matching piece fixed on the shell, and a closing mechanism connected with the transmission shaft is arranged in the shell;
the closing mechanism comprises a fixed contact fixed on a shell, a grounding bus is fixed between the fixed contact and the shell, the grounding bus is respectively contacted with the fixed contact and the shell, a grounding rod and a connecting bus which are connected together are fixed in the shell, the grounding rod and the fixed contact are arranged oppositely, the grounding rod and the fixed contact are coaxially arranged, a connecting lever is arranged on a transmission shaft, an arm rod of the connecting lever rotates along with the transmission shaft, a grounding sleeve is connected with the arm rod of the connecting lever, a plum blossom contact and a watchband contact finger are respectively and fixedly connected with two ends of the grounding sleeve, the plum blossom contact is positioned at one end of the grounding sleeve close to the fixed contact, the grounding sleeve, the plum blossom contact and the watchband contact finger can slide on the grounding rod along with the rotation of the arm rod of the.
The utility model is also characterized in that,
a plurality of closing mechanisms are arranged in the shell.
The shell is fixedly provided with an insulating rod, one end of the insulating rod is fixedly connected with the shell, the other end of the shell is fixedly connected with a switching body, and the switching body is fixedly provided with a grounding rod and a connecting bus which are connected together.
The insulator spindle is provided with two, and two insulator spindles are located the static contact both sides.
The connecting lever is U-shaped, the U-shaped bottom end of the connecting lever penetrates through the transmission shaft, a sleeve coaxial with the grounding sleeve is arranged at the opening of the connecting lever, and the tulip contact and the grounding sleeve are both positioned in the sleeve.
The static contact is fixed on the shell through a bolt, and the bolt penetrates through the grounding bus.
The cross section of the transmission shaft is regular hexagon, and the matching parts of the movable matching piece, the connecting lever and the transmission shaft are matched with the cross section of the transmission shaft in shape.
The utility model has the advantages that:
the utility model relates to a grounding switch for high-voltage switch cabinet maintenance, which has simple structure and convenient use; the grounding and isolating states of the grounding switch are realized through the closing mechanism, and the requirement of GB1985-2014 for closing the short circuit for 5 times can be met; safe and reliable, convenient operation can satisfy the various requirements of the standard to operation and electrical appliances.
Drawings
Fig. 1 is a schematic view of a main view structure of the grounding switch for overhauling the high-voltage switch cabinet in an isolated state;
fig. 2 is a schematic view of a top view structure of the high-voltage switch cabinet for maintenance in an isolated state of the grounding switch;
fig. 3 is a schematic view of a main view structure of the grounding switch for overhauling the high-voltage switch cabinet in a grounding state;
fig. 4 is a schematic view of a top-view structure of the grounding switch for overhauling the high-voltage switch cabinet of the present invention in a grounding state;
fig. 5 is a schematic perspective view of a housing of the grounding switch for overhauling the high-voltage switch cabinet according to the present invention;
fig. 6 is a schematic perspective view of a movable mating member in the grounding switch for overhauling the high-voltage switch cabinet;
FIG. 7 is a sectional view of the closing mechanism of the grounding switch for overhauling the high-voltage switch cabinet in an isolated state;
fig. 8 is a sectional view of the closing mechanism of the grounding switch for overhauling the high-voltage switch cabinet in a grounding state of the utility model;
fig. 9 is a schematic view of a three-dimensional structure of a static contact in the grounding switch for overhauling the high-voltage switch cabinet;
fig. 10 is a schematic structural view of a transmission shaft in the grounding switch for overhauling the high-voltage switch cabinet;
fig. 11 is a schematic perspective view of an insulating rod in the grounding switch for overhauling the high-voltage switch cabinet;
fig. 12 is a schematic perspective view of an adapter in the grounding switch for overhauling the high-voltage switch cabinet according to the present invention;
fig. 13 is a schematic perspective view of a grounding rod in the grounding switch for high-voltage switch cabinet maintenance of the present invention;
fig. 14 is a schematic perspective view of a ground busbar in the grounding switch for high-voltage switch cabinet maintenance of the present invention;
fig. 15 is a schematic perspective view of a crank arm in the earthing switch for overhauling the high-voltage switch cabinet;
fig. 16 is a schematic perspective view of a grounding sleeve in the grounding switch for overhauling the high-voltage switch cabinet;
fig. 17 is a schematic perspective view of a tulip contact in the grounding switch for overhauling the high-voltage switch cabinet;
fig. 18 is a schematic perspective view of a watch band finger in the grounding switch for overhauling the high-voltage switch cabinet;
fig. 19 is a schematic view of a three-dimensional structure of a bushing in the grounding switch for overhauling the high-voltage switch cabinet;
fig. 20 is the utility model relates to a high tension switchgear overhauls and connects bus's spatial structure schematic in with earthing switch.
In the figure, 1, a movable matching piece, 2, a shell, 3, a transmission shaft, 4, a crank arm, 5, a grounding bus, 6, a sleeve, 7, an adapter, 8, a grounding rod, 9, a static contact, 10, a plum blossom contact, 11, a grounding sleeve, 12, an insulating rod, 13, a watchband contact finger and 14, a connecting bus.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a high tension switchgear overhauls uses earthing switch, as shown in fig. 1-4, including casing 2 and transmission shaft 3, casing 2 is as shown in fig. 5, and transmission shaft 3 is connected with casing 2 through the movable fit piece 1 that fixes on casing 2, and movable fit piece 1 is as shown in fig. 6, sets up a plurality of closeouts mechanisms that have and be connected with transmission shaft 3 in the casing 2.
As shown in fig. 7-8, the closing mechanism includes a fixed contact 9 fixed on the housing 2 by a bolt, a ground bus 5 is fixed between the fixed contact 9 and the housing 2, the fixed contact 9 and the ground bus 5 are respectively shown in fig. 9-10, the bolt penetrates through the ground bus 5, the ground bus is respectively contacted with the fixed contact 9 and the housing 2, two insulating rods 12 shown in fig. 11 are fixed on the housing 2, the two insulating rods 12 are located at two sides of the fixed contact 9, one end of the insulating rod 12 is fixedly connected with the housing 2, the other end of the housing 2 is fixedly connected with an adapter 7 shown in fig. 12, the adapter 7 is fixed with a ground rod 8 and a connecting bus 14 which are connected together, the ground rod 8 and the connecting bus 14 are respectively shown in fig. 13 and 14, the ground rod 8 is arranged opposite to the fixed contact 9, and the ground rod 8 and the fixed contact 9 are coaxially arranged, a crank arm 4 shown in fig. 15 is, the arm rod of the crank arm 4 rotates along with the transmission shaft 3, the arm rod of the crank arm 4 is connected with a grounding sleeve 11 shown in a figure 16, two ends of the grounding sleeve 11 are respectively and fixedly connected with a plum blossom contact 10 shown in a figure 17 and a watchband contact finger 13 shown in a figure 18, the plum blossom contact 10 is positioned at one end, close to the static contact 9, of the grounding sleeve 11, the plum blossom contact 10 and the watchband contact finger 13 can slide on the grounding rod 8 along with the rotation of the arm rod of the crank arm 4, and the plum blossom contact 10 slides upwards to enable the static contact 9 to be inserted into the grounding sleeve.
As shown in fig. 15, the crank arm 4 is U-shaped, the U-shaped bottom end of the crank arm 4 penetrates through the transmission shaft 3, a sleeve 6 coaxial with the grounding sleeve 11 is arranged at an opening of the crank arm 4, the sleeve 6 is shown in fig. 19, and both the tulip contact 10 and the grounding sleeve 11 are located in the sleeve 6.
As shown in fig. 20, the cross section of the transmission shaft 3 is a regular hexagon, and the matching positions of the movable matching piece 1, the crank arm 4 and the transmission shaft 3 are matched with the cross section of the transmission shaft 3.
The utility model relates to a high tension switchgear overhauls with earthing switch's theory of operation and process specifically as follows:
the utility model relates to a grounding bus 5 and a static contact 9 of a grounding switch for overhauling a high-voltage switch cabinet are grounded; the connecting bus 14 and the grounding rod 8 are connected with the conductive part of the main loop; the two parts slide on the grounding rod 8 through the plum blossom contact 10, the grounding sleeve 11 and the watchband contact finger 13 to realize grounding or isolation of the main circuit conducting part.
The utility model discloses a total three kinds of states of earthing switch: an isolation state, a ground state, and a reset-switching-in state.
The movable matching piece 1 in an initial state, namely an isolation state, is rotated by 45 degrees clockwise by rotating the movable matching piece 1, the movable matching piece 1 drives the transmission shaft 3 and the connecting lever 4 arranged on the shaft 3 to rotate, the connecting lever 4 drives the sleeve 6 to move, the plum blossom contact 10 and the watchband contact finger 13 fixed in the sleeve 6 slide on the grounding rod 8 through the grounding sleeve 11, and the static contact 9 is inserted into the plum blossom contact 10, as shown in fig. 3, 4 and 6, so that the grounding state of the grounding switch is realized, and the conductive part of the main circuit is grounded. At this time, the fitting part 1 is rotated by 45 degrees counterclockwise, and similarly, the fitting part 1 drives the above-mentioned components to move in reverse direction, so that the static contact 9 is separated from the tulip contact 10, as shown in fig. 1, 2 and 5, the grounding switch returns to the initial isolation state, and the conductive part of the main loop is not grounded.
Claims (7)
1. The grounding switch for overhauling the high-voltage switch cabinet is characterized by comprising a shell (2) and a transmission shaft (3), wherein the transmission shaft (3) is connected with the shell (2) through a movable matching piece (1) fixed on the shell (2), and a closing mechanism connected with the transmission shaft (3) is arranged in the shell (2);
the closing mechanism comprises a fixed contact (9) fixed on a shell (2), a grounding bus (5) is fixed between the fixed contact (9) and the shell (2), the grounding bus is respectively contacted with the fixed contact (9) and the shell (2), a grounding rod (8) and a connecting bus (14) which are connected together are fixed in the shell (2), the grounding rod (8) and the fixed contact (9) are oppositely arranged, the grounding rod (8) and the fixed contact (9) are coaxially arranged, a crank arm (4) is arranged on the transmission shaft (3), an arm rod of the crank arm (4) rotates along with the transmission shaft (3), an arm rod of the crank arm (4) is connected with a grounding sleeve (11), a plum blossom contact (10) and a watchband contact finger (13) are respectively fixedly connected with two ends of the grounding sleeve (11), the plum blossom contact (10) is positioned at one end, close to the fixed contact (9), of the grounding sleeve (11), the grounding sleeve (11), the plum blossom contact (10) and the watchband contact finger (13) all slide on the grounding rod (8) along with the rotation of the crank arm (4) arm rod, and the plum blossom contact (10) slides upwards to enable the static contact (9) to be inserted into the grounding rod.
2. The earthing switch for overhauling a high-voltage switch cabinet as claimed in claim 1, wherein a plurality of closing mechanisms are arranged in the housing (2).
3. The earthing switch for overhauling a high-voltage switch cabinet as claimed in claim 1, wherein an insulating rod (12) is fixed on the housing (2), one end of the insulating rod (12) is fixedly connected with the housing (2), the other end of the housing (2) is fixedly connected with an adapter (7), and an earthing rod (8) and a connecting bus (14) which are connected together are fixed on the adapter (7).
4. The grounding switch for overhauling a high-voltage switch cabinet as claimed in claim 3, wherein two insulating rods (12) are provided, and the two insulating rods (12) are located at two sides of the fixed contact (9).
5. The earthing switch for overhauling high-voltage switch cabinet as claimed in claim 1, wherein the crank arm (4) is U-shaped, the U-shaped bottom end of the crank arm (4) penetrates through the transmission shaft (3), a sleeve (6) coaxial with the earthing sleeve (11) is arranged at an opening of the crank arm (4), and the tulip contact (10) and the earthing sleeve (11) are both positioned in the sleeve (6).
6. The earthing switch for overhauling a high-voltage switch cabinet as claimed in claim 1, wherein the fixed contact (9) is fixed on the shell (2) by a bolt, and the bolt penetrates through the earthing bus (5).
7. The earthing switch for overhauling the high-voltage switch cabinet as claimed in claim 1, wherein the cross section of the transmission shaft (3) is regular hexagon, the shape of the cross section of the transmission shaft (3) is matched with the matching position of the movable matching piece (1) and the transmission shaft (3), and the shape of the cross section of the transmission shaft (3) is matched with the matching position of the crank arm (4) and the transmission shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021404437.9U CN212570818U (en) | 2020-07-16 | 2020-07-16 | Earthing switch for high-voltage switch cabinet maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021404437.9U CN212570818U (en) | 2020-07-16 | 2020-07-16 | Earthing switch for high-voltage switch cabinet maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212570818U true CN212570818U (en) | 2021-02-19 |
Family
ID=74621702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021404437.9U Active CN212570818U (en) | 2020-07-16 | 2020-07-16 | Earthing switch for high-voltage switch cabinet maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212570818U (en) |
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2020
- 2020-07-16 CN CN202021404437.9U patent/CN212570818U/en active Active
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