CN219696313U - Grounding knife with retarding device - Google Patents
Grounding knife with retarding device Download PDFInfo
- Publication number
- CN219696313U CN219696313U CN202222840504.7U CN202222840504U CN219696313U CN 219696313 U CN219696313 U CN 219696313U CN 202222840504 U CN202222840504 U CN 202222840504U CN 219696313 U CN219696313 U CN 219696313U
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- CN
- China
- Prior art keywords
- rod
- rotating arm
- retarding
- grounding
- torsion spring
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Links
- 230000000979 retarding effect Effects 0.000 title claims abstract description 30
- 239000012212 insulator Substances 0.000 claims abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- Elimination Of Static Electricity (AREA)
Abstract
The utility model relates to a grounding knife with a retarder, which is provided with a grounding knife support, an insulator knob, a fixed contact arranged at the top end of the insulator knob, a moving contact group and a driving device for driving the moving contact group and the fixed contact to form switching-on or switching-off cooperation; the moving contact comprises three cutter bodies and a conducting rod connected with the three cutter bodies, a retarding device is fixedly arranged on the grounding cutter support and comprises a fixing frame, a torsion spring, a retarding block, a rotating arm and a cross rod, the fixing frame is fixedly connected with the grounding cutter support, the fixing frame is fixedly connected with the cross rod, the lower end of the rotating arm is rotationally connected with the cross rod, and the upper end of the rotating arm is rotationally connected with the retarding block; the torsion spring is fixedly sleeved on the cross rod, one end of the torsion spring is fixedly connected with the cross rod, and the other end of the torsion spring is fixedly connected with the rotating arm; the side, facing the conducting rod, of the retarding block is provided with the groove which can be clamped in by the conducting rod, so that the knife body and the static contact are prevented from hard collision during closing, and the service life of the knife body is prolonged.
Description
Technical Field
The utility model relates to a grounding knife with a retarder.
Background
The grounding disconnecting link is a safety interlocking mechanism which is arranged in the high-voltage switch cabinet to replace a grounding wire, and when the high-voltage line is maintained or replaced, the current is required to be grounded in order to ensure the personal safety of constructors; at this time, the moving contact group of the grounding knife is contacted with the fixed contact, so that the grounding effect can be achieved, and the operation is closing.
When closing a switch, in order to ensure that the movable contact group and the fixed contact can be in quick contact, a spring on the grounding disconnecting link can form compression state to accumulate energy when opening the switch, the accumulated energy in the compression state is quickly released when the switch is closed, the movable contact group is sprung to the fixed contact, the movable contact group and the fixed contact can be in severe collision contact, and the contact surface of the movable contact group and the fixed contact can be worn due to multiple severe collision, so that the grounding effect is influenced, and the safety of constructors is threatened.
Disclosure of Invention
The utility model aims to provide a grounding knife with a retarding device, which can prevent a knife body from hard collision with a fixed contact during closing and prolong the service life of the knife body.
The technical scheme for realizing the aim of the utility model is as follows: the utility model is provided with a grounding knife bracket, an insulator knob insulator, a fixed contact arranged at the top end of the insulator knob insulator, a moving contact group and a driving device for driving the moving contact group and the fixed contact to form switching-on or switching-off fit; the movable contact group comprises three cutter bodies and a conducting rod connected with the three cutter bodies, a retarding device is fixedly arranged on the grounding cutter support and comprises a fixing frame, a torsion spring, a retarding block, a rotating arm and a cross rod, the fixing frame is fixedly connected with the grounding cutter support, the fixing frame is fixedly connected with the cross rod, the lower end of the rotating arm is rotationally connected with the cross rod, and the upper end of the rotating arm is rotationally connected with the retarding block; the torsion spring is fixedly sleeved on the cross rod, one end of the torsion spring is fixedly connected with the cross rod, and the other end of the torsion spring is fixedly connected with the rotating arm; and a groove which can be used for clamping in the conducting rod is formed in one side, opposite to the conducting rod, of the retarding block.
Further, the fixing frame comprises a first inserting rod and a second inserting rod, the first inserting rod and the second inserting rod are vertically and fixedly arranged on the grounding knife support, and two ends of the cross rod are fixedly connected with the first inserting rod and the second inserting rod respectively; the retarder is fixedly provided with a connecting rod, the upper ends of the rotating arms are respectively provided with a through hole, and the retarder and the upper ends of the rotating arms are in rotary connection through the cooperation of the connecting rod and the through holes.
Further, a limiting piece for limiting the rotation angle of the retarder is arranged on the connecting rod.
Further, the limiting piece comprises a limiting block and limiting grooves, the limiting block is fixedly arranged at two ends of the connecting rod, the limiting grooves are fixedly arranged on the rotating arm, and the limiting block is in limiting fit with the limiting grooves.
Further, the cambered surfaces which can assist the conductive rod to slide into the groove are arranged on one sides of the notch of the groove and the side, close to the notch, of the retarding block.
Further, the lower extreme of rotor arm is equipped with rotatory sleeve, and rotatory sleeve cover is established on the horizontal pole, the torsional spring cover establish on the horizontal pole and the torsional spring is located rotatory sleeve inside, the one end and the rotatory sleeve fixed connection of torsional spring, the other end and the horizontal pole fixed connection of torsional spring.
The utility model has the positive effects that: (1) According to the utility model, the moving contact group is retarded when the grounding knife is switched on through the torsion spring, so that the hard collision between the moving contact group and the fixed contact is avoided, and the service life of the knife body on the moving contact group is prolonged.
(2) The rotating arm and the retarder are in rotating connection, so that the conducting rod and the retarder are prevented from being hard collided, abrasion is caused to the conducting rod and the retarder, and the service life of a product is prolonged.
(3) According to the utility model, the rotation angle of the upper retarding block and the rotating arm is limited by the limiting piece, so that the retarding block (3) is prevented from over-rotating, and the retarding effect is not achieved.
(4) The notch of the groove of the retarder and one side, close to the notch, of the retarder are provided with cambered surfaces capable of assisting the conductive rod to slide into the groove, and the cambered surfaces can guide the conductive rod in the direction before the conductive rod enters the groove, so that the conductive rod can enter the groove when a height error exists.
(5) The torsion spring is arranged in the rotary sleeve, and the hidden design is carried out on the torsion spring, so that the appearance of the utility model is more attractive.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which
Fig. 1 is a front view of a retarder device according to the utility model;
fig. 2 is an enlarged partial view of a in front view of the retarder according to the utility model;
fig. 3 is a side view of the retarder device of the utility model;
fig. 4 is an enlarged partial view of B in a side view of the retarder device of the utility model;
fig. 5 is a schematic structural view of the present utility model.
Detailed Description
Referring to fig. 1 to 5, the utility model is provided with a grounding knife bracket, an insulator knob, a fixed contact arranged at the top end of the insulator knob, a moving contact group and a driving device for driving the moving contact group and the fixed contact to form switching-on or switching-off cooperation; the movable contact group comprises three cutter bodies and a conducting rod connected with the three cutter bodies, a retarding device is fixedly arranged on a grounding cutter support, the retarding device comprises a fixing frame 1, a torsion spring 2, a retarding block 3, a rotating arm 4 and a cross rod 5, the fixing frame 1 is fixedly connected with the grounding cutter support, the fixing frame 1 is fixedly connected with the cross rod 5, the lower end of the rotating arm 4 is rotationally connected with the cross rod 5, and the upper end of the rotating arm 4 is rotationally connected with the retarding block 3; the torsion spring 2 is fixedly sleeved on the cross rod 5, one end of the torsion spring 2 is fixedly connected with the cross rod 5, and the other end of the torsion spring 2 is fixedly connected with the rotating arm 4; a groove 32 which can be clamped in by the conducting rod is arranged on one side, opposite to the conducting rod, of the retarding block 3.
The driving device for driving the movable contact group and the fixed contact to form the opening or closing fit is in the prior art, and will not be described in detail herein.
The cross bar is a round cross bar 5, a round hole which can be penetrated by the round cross bar 5 is formed in the lower end of the rotating arm 4, and the round cross bar penetrates through the round hole to be connected with the rotating arm 4 in a rotating way.
When the conductive rod enters the groove 32, the rotating arm 4 is pushed to rotate; when the rotating arm 4 rotates, one end of the torsion spring 2 fixedly connected with the rotating arm 4 moves synchronously with the rotating arm 4, and the other end of the torsion spring 2 is fixed on the cross rod 5, and the torsion spring 2 starts to be in a compressed state; when the conductive rod leaves the groove 32, the torsion spring 2 releases the compressed energy, and the rebound torsion spring 2 drives the rotating arm 4 to return to the state when the torsion spring 2 is not compressed.
The fixing frame 1 comprises a first inserted link 11 and a second inserted link 12, the first inserted link 11 and the second inserted link 12 are vertically and fixedly arranged on a grounding knife bracket, and two ends of the cross rod 5 are respectively and fixedly connected with the first inserted link 11 and the second inserted link 12; the retarder 3 is fixedly provided with a connecting rod, the upper ends of the rotating arms 4 are respectively provided with a through hole, and the retarder 3 and the upper ends of the rotating arms 4 are in rotary connection through the matching of the connecting rod and the through holes.
The connecting rod is provided with a limiting piece 6 for limiting the rotation angle of the retarder 3.
The limiting piece 6 comprises a limiting block and limiting grooves, the limiting block is fixedly arranged at two ends of the connecting rod, the limiting grooves are fixedly arranged on the rotating arm 4, and the limiting block and the limiting grooves are in limiting fit as follows:
referring to fig. 4, the limiting groove is a fan-shaped groove, the limiting block is a fan-shaped protruding block fixed on the connecting rod, when the retarder 3 rotates, the connecting rod fixedly connected to the retarder 3 synchronously rotates, at the moment, the limiting block on the connecting rod rotates along with the rotation of the connecting rod, when the conducting rod enters the groove 32, the limiting block contacts with the lower inner wall of the limiting groove to prevent the retarder 3 from rotating excessively; when the conducting rod leaves the groove 32, the limiting block is in contact with the upper inner part of the limiting groove, so that the conducting rod can always enter the groove 32 along the cambered surface 31.
The notch of the groove 32 and one side of the retarder 3 close to the notch are provided with cambered surfaces 31 which can assist the conductive rod to slide into the groove 32.
The lower extreme of rotating arm 4 is equipped with rotatory sleeve 41, and rotatory sleeve 41 cover is established on horizontal pole 5, torsional spring 2 cover establish on horizontal pole 5 and torsional spring 2 be located rotatory sleeve 41 inside, the one end and the rotatory sleeve 41 fixed connection of torsional spring 2, the other end and the horizontal pole 5 fixed connection of torsional spring 2.
While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.
Claims (6)
1. The grounding knife with the retarding device comprises a grounding knife support, an insulator knob, a fixed contact arranged at the top end of the insulator knob, a moving contact group and a driving device for driving the moving contact group and the fixed contact to form switching-on or switching-off fit; the method is characterized in that: the movable contact comprises three cutter bodies and a conducting rod connected with the three cutter bodies, a retarding device is fixedly arranged on a grounding cutter support, the retarding device comprises a fixing frame (1), a torsion spring (2), a retarding block (3), a rotating arm (4) and a cross rod (5), the fixing frame (1) is fixedly connected with the grounding cutter support, the fixing frame (1) is fixedly connected with the cross rod (5), the lower end of the rotating arm (4) is rotationally connected with the cross rod (5), and the upper end of the rotating arm (4) is rotationally connected with the retarding block (3); the torsion spring (2) is fixedly sleeved on the cross rod (5), one end of the torsion spring (2) is fixedly connected with the cross rod (5), and the other end of the torsion spring (2) is fixedly connected with the rotating arm (4); a groove (32) which can clamp the conducting rod in is arranged on one side of the retarding block (3) opposite to the conducting rod.
2. The earthing knife with retarder according to claim 1, characterized in that: the fixing frame (1) comprises a first inserting rod (11) and a second inserting rod (12), the first inserting rod (11) and the second inserting rod (12) are vertically and fixedly arranged on the grounding knife support, and two ends of the cross rod (5) are fixedly connected with the first inserting rod (11) and the second inserting rod (12) respectively; the retarder (3) is fixedly provided with a connecting rod, the upper ends of the rotating arms (4) are respectively provided with a through hole, and the upper ends of the retarder (3) and the rotating arms (4) are in rotary connection through the matching of the connecting rod and the through holes.
3. A grounding knife provided with a retarding device according to claim 2, characterized in that: the connecting rod is provided with a limiting piece (6) for limiting the rotation angle of the retarding block (3).
4. A grounding knife provided with a retarding device according to claim 3, characterized in that: the limiting piece (6) comprises limiting blocks and limiting grooves, the limiting blocks are fixedly arranged at two ends of the connecting rod, the limiting grooves are fixedly arranged on the rotating arm (4), and the limiting blocks are in limiting fit with the limiting grooves.
5. The earthing knife with retarder according to claim 1, characterized in that: the groove opening of the groove (32) and one side, close to the groove opening, of the retarding block (3) are provided with cambered surfaces (31) which can assist the conducting rod to slide into the groove (32).
6. The earthing knife with retarder according to claim 1, characterized in that: the lower extreme of rotating arm (4) be equipped with rotatory sleeve (41), rotatory sleeve (41) cover is established on horizontal pole (5), torsional spring (2) cover establish on horizontal pole (5) and torsional spring (2) are located rotatory sleeve (41) inside, the one end and rotatory sleeve (41) fixed connection of torsional spring (2), the other end and horizontal pole (5) fixed connection of torsional spring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222840504.7U CN219696313U (en) | 2022-10-27 | 2022-10-27 | Grounding knife with retarding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222840504.7U CN219696313U (en) | 2022-10-27 | 2022-10-27 | Grounding knife with retarding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696313U true CN219696313U (en) | 2023-09-15 |
Family
ID=87940670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222840504.7U Active CN219696313U (en) | 2022-10-27 | 2022-10-27 | Grounding knife with retarding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696313U (en) |
-
2022
- 2022-10-27 CN CN202222840504.7U patent/CN219696313U/en active Active
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| GR01 | Patent grant |