CN214378295U - Mechanical connecting rod of circuit breaker and circuit breaker - Google Patents
Mechanical connecting rod of circuit breaker and circuit breaker Download PDFInfo
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- CN214378295U CN214378295U CN202120761879.7U CN202120761879U CN214378295U CN 214378295 U CN214378295 U CN 214378295U CN 202120761879 U CN202120761879 U CN 202120761879U CN 214378295 U CN214378295 U CN 214378295U
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- connecting rod
- circuit breaker
- bearing
- rotating
- positioning hole
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Abstract
The utility model relates to a circuit breaker technical field discloses a mechanical connecting rod and circuit breaker of circuit breaker, include: a transmission connecting rod, a rotating connecting rod, a transmission connecting rod and a rotating connecting rod, wherein the upper end of the transmission connecting rod is connected with a driving component on the circuit breaker, so that the transmission connecting rod can move along the length direction of the transmission connecting rod, the lower end of the transmission connecting rod is provided with a first positioning hole, the rotation connecting rod is vertical to the transmission connecting rod, the rotation connecting rod is vertically provided with two lug plates which are parallel to each other, each lug plate is provided with a second positioning hole, the shaft body simultaneously passes through the two second positioning holes and the first positioning hole, a bearing is arranged between the shaft body and the two second positioning holes and/or the first positioning hole, the rotation connecting rod is connected with an opening and closing assembly on the circuit breaker, the opening and closing assembly is used for controlling the closing or opening of the circuit breaker, rotate through rotating the connecting rod and can drive subassembly intercommunication or the separation of opening and shutting, the utility model provides a mechanical connecting rod of circuit breaker can increase the life of circuit breaker.
Description
Technical Field
The utility model relates to a circuit breaker technical field, in particular to mechanical connecting rod and circuit breaker of circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying and breaking a current under a normal circuit condition and closing, carrying and breaking a current under an abnormal circuit condition within a predetermined time, and is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the use range thereof, and the division of the high-voltage and low-voltage boundary lines is relatively fuzzy, and generally called a high-voltage electric appliance with a voltage of 3kV or more.
The 10kv circuit breaker of the Siemens 8BK20 used at present is required to be opened and closed 6 times per day according to process requirements, the action is frequent, when the circuit breaker is normally opened and closed for more than 4 ten thousand times, a mechanical tripping phenomenon occurs, the circuit breaker cannot be normally closed or is in a closed state to generate tripping under stealing, and production fluctuation is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of mechanical connecting rod of circuit breaker, the problem of connecting rod serious wear in aim at solution circuit breaker can carry out the restoration operation to the circuit breaker, increases the life of circuit breaker, reduction in production cost.
The utility model provides a mechanical connecting rod of circuit breaker, include:
the upper end of the transmission connecting rod is connected with a driving assembly on the circuit breaker so that the transmission connecting rod can move along the length direction of the transmission connecting rod, and the lower end of the transmission connecting rod is provided with a first positioning hole;
the rotating connecting rod is perpendicular to the transmission connecting rod, two lug plates which are parallel to each other are vertically arranged on the rotating connecting rod, a second positioning hole is formed in each lug plate, the shaft body simultaneously penetrates through the two second positioning holes and the first positioning hole, and a bearing is arranged between the shaft body and the two second positioning holes and/or the first positioning hole;
the rotating connecting rod is connected with the opening and closing assembly on the circuit breaker, the opening and closing assembly is used for controlling the closing or opening of the circuit breaker, and the rotating connecting rod can drive the opening and closing assembly to be communicated or blocked so as to control the closing or opening of the circuit breaker.
Optionally, a bearing is respectively arranged between the shaft body and each second positioning hole, an outer ring of the bearing is fixedly connected with the hole walls of the two second positioning holes, and an inner ring of the bearing is fixedly connected with the shaft body.
Optionally, the bearing is disposed between the shaft body and the first positioning hole, an outer ring of the bearing is fixedly connected with a hole wall of the first positioning hole, and an inner ring of the bearing is fixedly connected with the shaft body.
Optionally, a bearing is respectively disposed between the shaft body and each of the second positioning holes and the first positioning hole, an outer ring of the bearing is fixedly connected with a hole wall of each of the second positioning holes and the first positioning holes, and an inner ring of the bearing is fixedly connected with the shaft body.
Optionally, the shaft body is a connecting pin.
Optionally, the bearing is a rolling bearing.
Optionally, two ends of the rotating connecting rod are respectively in running fit with the two mounting seats, so that the rotating connecting rod rotates around the axis of the rotating connecting rod.
Optionally, through holes are respectively formed in the two mounting seats, a rotating bearing is fixed in each through hole, and two ends of each rotating connecting rod are respectively fixedly connected with an inner ring of each rotating bearing.
Optionally, the lower end of the mounting seat is fixedly connected with a mounting plate.
The utility model also provides a circuit breaker, including the mechanical connecting rod of foretell circuit breaker.
Compared with the prior art, the beneficial effects of the utility model reside in that: rotate through the connecting pin between drive connecting rod and the rotation connecting rod in traditional circuit breaker and connect, be the hard friction of metal between each other, the utility model discloses increase the bearing with the junction of drive connecting rod and rotation connecting rod and realize rotating the connection, change traditional hard friction of metal into sliding friction to reduce the wearing and tearing of drive connecting rod and rotation connecting rod junction, and then increase the life of circuit breaker, reduction in production cost, just the utility model discloses simple structure, it is convenient to maintain, only needs lubricated bearing during daily maintenance, easily promotes.
Drawings
FIG. 1 is a schematic diagram of the mechanical linkage of a conventional Siemens 8BK20 10kv circuit breaker;
fig. 2 is a schematic structural diagram of a mechanical link of a circuit breaker according to an embodiment of the present invention;
fig. 3 is an enlarged view of a portion of the structure at G in fig. 2.
Description of reference numerals:
the device comprises a transmission connecting rod 1, a driving component 2, a first positioning hole 3, a rotating connecting rod 4, an ear plate 5, a second positioning hole 6, a bearing 7, a shaft body 8, a mounting seat 9 and a mounting plate 10.
Detailed Description
In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the technical solutions of the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
For clarity of description of the principles of the present invention, the following illustrates the operating principle of the circuit breaker:
closing: after the energy storage of the energy storage device of the circuit breaker is finished, the convex surface of the cam is located at the highest position, the closing button is pressed at the moment, the closing coil Y9 is powered on, the mechanical ejector pin acts to enable the energy storage device to release mechanical energy instantly, the cam rotates 180 degrees instantly at the moment, the cam pushes the transmission connecting rod to move downwards, the transmission connecting rod drives the rotation connecting rod to rotate again, when the rotation connecting rod rotates to the maximum position, the clamping ejector rod just abuts against the coaxial rotating part of the rotation connecting rod, and when the position is reached, the moving and static contacts of the circuit breaker are contacted, and the circuit breaker is in a closing state.
Opening a brake: when the opening button is pressed, the opening coil Y1 is electrified, the mechanical ejector pin acts, the clamping ejector rod is tripped, the rotating connecting rod is restored to the initial state under the action of the spring force, the moving contact and the static contact of the circuit breaker are blocked, and the circuit breaker is in the opening state.
The existing design is as follows: as shown in fig. 1, the transmission connecting rod is directly connected with the rotating connecting rod through a pin, mechanical friction (direct friction) exists between the transmission connecting rod and the rotating connecting rod and between the pin, meanwhile, the position is not easy to lubricate and maintain, when the breaker is switched on and off, a positioning hole between the transmission connecting rod and the rotating connecting rod is seriously abraded under the action of the pin, after the aperture is enlarged, the rotating stroke of the rotating connecting rod is reduced, and the short-circuit device cannot be normally switched on.
As shown in fig. 2, an embodiment of the present invention provides a mechanical link of a circuit breaker, including: the circuit breaker comprises a transmission connecting rod 1 and a rotating connecting rod 4, wherein the upper end of the transmission connecting rod 1 is connected with a driving assembly 2 on the circuit breaker, so that the transmission connecting rod 1 can move along the rod length direction of the transmission connecting rod 1, the lower end of the transmission connecting rod 1 is provided with a first positioning hole 3, the rotating connecting rod 4 is perpendicular to the transmission connecting rod 1, the rotating connecting rod 4 is vertically provided with two lug plates 5 which are parallel to each other, each lug plate 5 is provided with a second positioning hole 6, a shaft body 8 simultaneously penetrates through the two second positioning holes 6 and the first positioning hole 3, a bearing 7 is arranged between the shaft body 8 and the two second positioning holes 6 and/or the first positioning hole 3, the rotating connecting rod 4 is connected with an opening and closing assembly on the circuit breaker, the opening and closing assembly is used for controlling the closing or opening of the circuit breaker, the opening and closing assembly can be driven to be communicated or blocked through the rotation of the rotating connecting rod 4 so as to control the closing or opening of the circuit breaker, when the upper end of the transmission connecting rod 1 moves down to the lowest position, the rotating connecting rod 4 rotates to the lowest position, the opening and closing components are communicated, the circuit breaker is in a closing state, the rotating connecting rod 4 resets when the upper end of the transmission connecting rod 1 moves upwards to the highest position, and the circuit breaker is in a switching-off state.
In this embodiment, the driving assembly 2 includes an energy storage device, a cam structure and a spring assembly, the opening and closing assembly includes a moving contact connecting rod fixedly connected to the rotating connecting rod 4 and a static contact fixed at a fixed position, when the energy storage of the circuit breaker energy storage device is finished, the convex surface of the cam is at the highest position, the closing button is pressed at this time, the closing coil Y9 is powered, the mechanical thimble is operated to enable the energy storage device to instantly release mechanical energy, the cam is instantly rotated by 180 °, the cam pushes the transmission connecting rod 1 to move downwards, the transmission connecting rod 1 drives the rotating connecting rod 4 to rotate, when the rotating connecting rod 4 is rotated to the maximum position, the clamping ejector rod just abuts against the coaxial rotating part of the rotating connecting rod 4, when at this position, the moving contact of the moving contact connecting rod of the circuit breaker contacts with the static contact, the circuit breaker is in the closing state, the opening button is pressed, the opening coil Y1 is powered, and the mechanical thimble is operated, the screens ejector pin is tripped, rotates the connecting rod and resumes initial condition under the effect of spring force (spring assembly promptly), and the circuit breaker sound contact blocks, and the circuit breaker is in the separating brake state.
Rotate through the connecting pin between drive connecting rod and the rotation connecting rod in traditional circuit breaker and connect, be the hard friction of metal between each other, the utility model discloses increase the bearing with the junction of drive connecting rod and rotation connecting rod and realize rotating the connection, change traditional hard friction of metal into sliding friction to reduce the wearing and tearing of drive connecting rod and rotation connecting rod junction, and then increase the life of circuit breaker, reduction in production cost, just the utility model discloses simple structure, it is convenient to maintain, only needs lubricated bearing during daily maintenance, easily promotes.
The utility model discloses an in one embodiment, bearing 7 sets up between axis body 8 and two second locating holes 6, bearing 7's outer lane and two second locating holes 6's pore wall fixed connection, bearing 7's inner circle and axis body 8 fixed connection.
In another embodiment of the utility model, bearing 7 sets up between axis body 8 and first locating hole 3, bearing 7's outer lane and first locating hole 3's pore wall fixed connection, bearing 7's inner circle and axis body 8 fixed connection.
In the first embodiment of the present invention, a bearing 7 is respectively disposed between the shaft body 8 and each second positioning hole 6, the outer ring of the bearing 7 is fixedly connected to the hole walls of the two second positioning holes 6, and the inner ring of the bearing 7 is fixedly connected to the shaft body 8.
The utility model discloses an in the second embodiment, bearing 7 sets up between axis body 8 and first locating hole 3, bearing 7's outer lane and first locating hole 3's pore wall fixed connection, bearing 7's inner circle and axis body 8 fixed connection.
The utility model discloses a third embodiment, respectively set up a bearing 7 between axis body 8 and every second locating hole 6 and the first locating hole 3, the outer lane of bearing 7 links firmly with the pore wall of every second locating hole 6 and first locating hole 3, the inner circle of bearing 7 respectively with axis body 8 fixed connection.
Optionally, the shaft body 8 is a connecting pin.
Optionally, the bearing 7 is a rolling bearing, the friction coefficient of the rolling bearing is smaller than that of a sliding bearing, the transmission efficiency is high, friction is further reduced, and abrasion is reduced.
Optionally, both ends of the rotating link 4 are respectively rotatably engaged with the two mounting seats 9, so that the rotating link 4 rotates around its axis.
Optionally, through holes are respectively formed in the two mounting seats 9, rotating bearings are fixed in the through holes, and two ends of the rotating connecting rod 4 are respectively fixedly connected with inner rings of the rotating bearings.
Optionally, the lower end of the mounting seat 9 is fixedly connected to a mounting plate 10, and in this embodiment, the stationary contact is fixed to the mounting plate 9.
A circuit breaker comprises the mechanical linkage of the circuit breaker.
The utility model also provides a circuit breaker, including the mechanical connecting rod of foretell circuit breaker.
To sum up, the utility model discloses a realize rotating the connection through antifriction bearing between with transmission connecting rod and the rotation connecting rod, change into sliding friction with the hard friction of traditional metal to reduce the wearing and tearing of transmission connecting rod and rotation connecting rod junction, and then increase the life of circuit breaker, reduction in production cost, just the utility model discloses simple structure, it is convenient to maintain, only needs lubricated bearing during daily maintenance, easily promotes.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the embodiments, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.
Claims (10)
1. A mechanical linkage of a circuit breaker, comprising:
the upper end of the transmission connecting rod (1) is connected with a driving assembly (2) on the circuit breaker so that the transmission connecting rod (1) can move along the rod length direction of the transmission connecting rod (1), and the lower end of the transmission connecting rod (1) is provided with a first positioning hole (3);
the rotating connecting rod (4) is perpendicular to the transmission connecting rod (1), two lug plates (5) which are parallel to each other are vertically arranged on the rotating connecting rod (4), a second positioning hole (6) is formed in each lug plate (5), a shaft body (8) simultaneously penetrates through the two second positioning holes (6) and the first positioning hole (3), and a bearing (7) is arranged between the shaft body (8) and the two second positioning holes (6) and/or the first positioning hole (3);
the rotating connecting rod (4) is connected with an opening and closing assembly on the circuit breaker, the opening and closing assembly is used for controlling the closing or opening of the circuit breaker, and the rotating connecting rod (4) rotates to drive the opening and closing assembly to be communicated or blocked so as to control the closing or opening of the circuit breaker.
2. The mechanical link of the circuit breaker according to claim 1, wherein a bearing (7) is disposed between the shaft body (8) and each second positioning hole (6), an outer ring of the bearing (7) is fixedly connected with the hole walls of the two second positioning holes (6), and an inner ring of the bearing (7) is fixedly connected with the shaft body (8).
3. The mechanical linkage of the circuit breaker according to claim 1, wherein the bearing (7) is disposed between the shaft body (8) and the first positioning hole (3), an outer ring of the bearing (7) is fixedly connected with a hole wall of the first positioning hole (3), and an inner ring of the bearing (7) is fixedly connected with the shaft body (8).
4. The mechanical linkage of the circuit breaker according to claim 1, wherein a bearing (7) is disposed between the shaft body (8) and each of the second positioning hole (6) and the first positioning hole (3), an outer ring of the bearing (7) is fixedly connected to the wall of each of the second positioning hole (6) and the first positioning hole (3), and an inner ring of the bearing (7) is fixedly connected to the shaft body (8).
5. Mechanical linkage of a circuit breaker according to any of claims 1-4, characterized in that the shaft body (8) is a connecting pin.
6. Mechanical linkage of a circuit breaker according to any of claims 1 to 4, characterized in that the bearing (7) is a rolling bearing.
7. Mechanical linkage of a circuit breaker according to any of claims 1-4, characterized in that the two ends of the rotating link (4) are in rotating engagement with two mounting seats (9), respectively, for rotating the rotating link (4) around its axis.
8. The mechanical linkage of circuit breaker according to claim 7, characterized in that two of said mounting seats (9) are respectively provided with a through hole, a rotating bearing is fixed in said through hole, and two ends of said rotating linkage (4) are respectively fixedly connected with the inner ring of said rotating bearing.
9. Mechanical linkage of a circuit breaker according to claim 7, characterized in that a mounting plate (10) is fixedly connected to the lower end of the mounting seat (9).
10. A circuit breaker comprising a mechanical linkage of the circuit breaker according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120761879.7U CN214378295U (en) | 2021-04-14 | 2021-04-14 | Mechanical connecting rod of circuit breaker and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120761879.7U CN214378295U (en) | 2021-04-14 | 2021-04-14 | Mechanical connecting rod of circuit breaker and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378295U true CN214378295U (en) | 2021-10-08 |
Family
ID=77975028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120761879.7U Active CN214378295U (en) | 2021-04-14 | 2021-04-14 | Mechanical connecting rod of circuit breaker and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214378295U (en) |
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2021
- 2021-04-14 CN CN202120761879.7U patent/CN214378295U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liang Chaowei Inventor after: Cao Yangwu Inventor after: Zhang Yang Inventor after: Zhao Bing Inventor after: Wang Qi Inventor after: Pu Guangming Inventor before: Liang Chaowei Inventor before: Cao Yangwu Inventor before: Zhang Yang Inventor before: Zhao Bing Inventor before: Wang Qi Inventor before: Pu Guangming |
|
| CB03 | Change of inventor or designer information |