CN111354579A - Motor direct-drive type large-torque three-station electric mechanism for common box - Google Patents
Motor direct-drive type large-torque three-station electric mechanism for common box Download PDFInfo
- Publication number
- CN111354579A CN111354579A CN202010177663.6A CN202010177663A CN111354579A CN 111354579 A CN111354579 A CN 111354579A CN 202010177663 A CN202010177663 A CN 202010177663A CN 111354579 A CN111354579 A CN 111354579A
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- transmission
- roller
- driving plate
- torque
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/34—Driving mechanisms, i.e. for transmitting driving force to the contacts using ratchet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a motor direct-drive type large-torque three-station electric mechanism sharing a box, which relates to the field of combined electrical appliances and comprises a mechanism frame, a power input assembly, a transmission assembly and an output assembly, wherein the power input assembly is connected with the output assembly through the transmission assembly; a driving groove matched with the roller is arranged on a driving plate of the transmission assembly, and the distance between the outer edge of the driving groove and the axis of a driving plate shaft is more than or equal to the distance between the transmission screw rod and the axis of the driving plate shaft; an output gear of the output component is meshed with a large gear of the transmission component. The electric mechanism has compact structure, simple processing technology of the mechanism frame and low production cost; the stroke of the transmission nut is large, the output gear has low output rotating speed and large output torque while meeting the switching-on and switching-off time requirement, and the problem of motor burning caused by clamping stagnation of the three-position switch body can be effectively solved.
Description
Technical Field
The invention belongs to the field of combined electrical appliances, and particularly relates to a three-station electric mechanism for a motor direct-drive type large-torque common box.
Background
In recent years, with the development of gas insulated metal switchgear, especially in a 126kV common box GIS, a three-station isolation grounding switch has been increasingly adopted by various manufacturers, due to its advantages of small size, compact structure, high complexity, flexible and various configurations, and capability of realizing mechanical interlocking of the isolation switch and the grounding switch, thereby improving reliability.
However, the operating mechanism of the currently used three-position isolating grounding switch has poor reliability and high failure rate. The torque of the three-station isolation grounding switch is increased after the three-station isolation grounding switch is used for many years, and the phenomenon that a three-station mechanism cannot drive the switch often occurs, so that the progress of electric power construction is influenced, and the safety of personnel is influenced in severe cases. Obviously, new technical means are needed to solve the problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a motor direct-drive type large-torque three-station electric mechanism for a common box, which aims to solve the technical problems.
The invention provides a motor direct-drive type large-torque three-station electric mechanism for a common box, which comprises a machine frame, a power input assembly, a transmission assembly and an output assembly, wherein the power input assembly, the transmission assembly and the output assembly are arranged on the machine frame, and the power input assembly is connected with the output assembly through the transmission assembly; the power input assembly comprises a motor, a transmission screw rod, a transmission nut and a roller, wherein the output end of the motor is connected with the transmission screw rod, the transmission nut is meshed with the transmission screw rod, the transmission nut is provided with an installation column, and the roller is installed on the installation column; the transmission assembly comprises a driving plate, a driving plate shaft and a large gear, the driving plate and the large gear are installed on the driving plate shaft, a driving groove matched with the roller is formed in the driving plate, and the distance between the outer edge of the driving groove and the axis of the driving plate shaft is larger than or equal to the distance between the transmission screw rod and the axis of the driving plate shaft; the edge of the driving groove, which is in contact with the roller, forms an included angle with the axis of the transmission lead screw; the output assembly comprises an output gear, and the output gear is meshed with the large gear.
Furthermore, a threaded hole is formed in the middle of the transmission nut, and the mounting column is located in the direction perpendicular to the threaded hole.
Furthermore, the mounting column comprises a long column and a short column, the rollers comprise a large roller and a small roller, the long column is provided with the large roller and the small roller, the short column is provided with the two small rollers, and the small rollers are fixed through elastic check rings for shafts.
Further, the driving plates comprise two driving plates, wherein the driving plate close to the large gear side is matched with the large roller on the long column, and the driving plate far from the large gear side is matched with the small roller of the short column.
Furthermore, the drive plate is of a mushroom-shaped structure, the drive groove is located between the mushroom cap structure and the mushroom stem structure, and the edge of the mushroom stem structure, which is in contact with the roller, and the axis of the transmission screw form an included angle of 1-2 degrees.
Further, tapered roller bearing, baffle, dish spring and retaining ring are installed respectively to drive screw's both ends, tapered roller bearing is located drive screw's tip, the baffle is adjacent with tapered roller bearing, the retaining ring includes little retaining ring and big retaining ring, little retaining ring is located and keeps away from motor one side, big retaining ring is located and is close to motor one side, the dish spring be located the baffle respectively with between the little retaining ring and the baffle with between the big retaining ring, drive nut is adjacent with big retaining ring.
Further, the power input subassembly is provided with monitoring devices, monitoring devices includes travel switch, switch mounting panel and switch action board, travel switch passes through the fix with screw on the switch mounting panel, the switch mounting panel passes through the fix with screw on the framework, the switch action board is installed on drive nut, travel switch monitors switch action board position to the position of monitoring drive nut.
Furthermore, a bearing, a small spacer bush, a driving plate, a large spacer bush, a driving plate, a small spacer bush, a bearing, a middle spacer bush and a large gear are sequentially arranged on the driving plate shaft, the axial displacement of parts on the shaft is limited at two ends through elastic check rings for the shaft, and the displacement of the bearing at two ends is limited through a pressing plate fixed on a framework.
Furthermore, one end of the output gear is mounted on a bearing in the machine frame, the other end of the output gear is mounted on a bearing in the gear seat, and the gear seat is fixed on the machine frame through a screw.
The motor direct-drive type large-torque three-station electric mechanism for the common box has the beneficial effects that the mechanism is simple, particularly, when the transmission nut moves linearly along the transmission lead screw, the roller can be inserted into the driving groove of the driving plate, the driving plate rotates to drive the large gear to rotate, and then the large gear and the output gear rotate to output torque, so that the long-term effective operation of the three-station mechanism is guaranteed.
In addition, the distance between the outer edge of the driving groove of the driving plate and the axis is larger than or equal to the distance between the transmission screw rod and the axis, so that the driving plate and the roller on the transmission nut are matched to form a mechanical lock, and the isolation side and the grounding side can not be switched on simultaneously from the mechanical aspect.
The edge of the driving groove, which is in contact with the roller, forms an included angle with the axis of the transmission lead screw; the disc spring can be prevented from being flattened by the motion inertia of the transmission nut, and the problem that the motor is easy to burn by a traditional three-station electric mechanism is effectively solved.
The electric mechanism has compact structure, safety and reliability, simple processing technology of the mechanism frame and low production cost; the stroke of the transmission nut is large, the output gear has low output rotating speed and large output torque while meeting the switching-on and switching-off time requirement, and the problem of motor burning caused by clamping stagnation of the three-position switch body can be effectively solved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic sectional view A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view B-B of FIG. 1;
FIG. 4 is a schematic view of FIG. 1 taken along line C;
FIG. 5 is a schematic front view of the drive nut;
FIG. 6 is a schematic top view of the drive nut;
FIG. 7 is a left side schematic view of the drive nut;
FIG. 8 is a schematic diagram of the main structure of the invention when the ground side is switched on;
fig. 9 is a schematic structural diagram of a main body of the isolation side switching-on device of the present invention.
FIG. 10 is a schematic diagram of a driving plate structure according to the present invention.
In the figure, 1, a mechanism frame, 2, a bearing seat, 3, a tapered roller bearing, 4, a baffle plate, 5, a small retainer ring, 6, a travel switch, 7, a switch mounting plate, 8, a transmission nut, 9, a switch action plate, 10, a large retainer ring, 11, a disc spring, 12, a transmission lead screw, 13, a motor, 14, a coupler, 15, a mounting plate, 16, a spacer bush, 17, a large gear, 18, a middle spacer bush, 19, a driving plate shaft, 20, a bearing, 21, a small spacer bush, 22, a pressing plate, 23, a driving plate, 24, a large spacer bush, 25, a small roller, 26, a large roller, 27, an output gear, 28 and a gear seat.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A motor direct-drive type large-torque three-station electric mechanism for a common box comprises a machine frame 1, a power input assembly, a transmission assembly and an output assembly, wherein the power input assembly, the transmission assembly and the output assembly are installed on the machine frame 1, and the power input assembly is connected with the output assembly through the transmission assembly; the power input assembly comprises a motor 13, a transmission screw rod 12, a transmission nut 8 and a roller, the output end of the motor 13 is connected with the transmission screw rod 12, the transmission nut 8 is meshed with the transmission screw rod 12, a mounting column is arranged on the transmission nut 8, and the roller is mounted on the mounting column; the transmission assembly comprises a driving plate 23, a driving plate shaft 19 and a gearwheel 17, the driving plate 23 and the gearwheel 17 are mounted on the driving plate shaft 19, a driving groove matched with the roller is formed in the driving plate 23, and the distance between the outer edge of the driving groove and the axis of the driving plate shaft 19 is greater than or equal to the distance between the transmission screw 12 and the axis of the driving plate shaft 19; the edge of the driving groove, which is in contact with the roller, forms an included angle with the axis of the transmission lead screw 12; the output assembly comprises an output gear 27, the output gear 27 being in mesh with the gearwheel 17.
As shown in fig. 2, 5, 6 and 7, the middle of the driving nut 8 has a threaded hole, and the mounting post is located in a direction perpendicular to the threaded hole.
The mounting column comprises a long column and a short column, the rollers comprise a large roller 26 and a small roller 25, the large roller 26 and the small roller 25 are mounted on the long column, and the two small rollers 25 are mounted on the short column and are fixed through elastic check rings for shafts.
Preferably, as shown in fig. 10, the driving plate 23 is a mushroom-shaped structure, the driving groove is located between the pileus structure and the stipe structure, and the edge of the stipe structure contacting the roller forms an included angle of 1-2 ° with the axis of the driving screw 12. The included angle of 1.5 degrees is preferred, no matter in the opening state or in the closing state, the inclined edge of the driving plate 23, the large roller 26 and the small roller 25 in contact with the axis of the transmission screw rod 12 forms the included angle of 1.5 degrees, the disc spring 11 can be prevented from being flattened by the transmission nut 8 due to movement inertia, and the problem that the motor 13 is easily burnt by a traditional three-station electric mechanism is effectively solved.
The driving plates 23 comprise two driving plates, wherein the driving plate 23 close to the large gear 17 is matched with a large roller 26 on the long column, and the driving plate 23 far away from the large gear 17 is matched with a small roller 25 of the short column.
The bearing seat 2 is fixed on the framework 1 through bolts; the motor 13 is bolted to the frame 1 via a mounting plate 15 and a spacer 16, and is coupled to the drive screw 12 via a coupling 14.
Tapered roller bearing 3, baffle 4, dish spring 11 and retaining ring are installed respectively to drive screw 12's both ends, tapered roller bearing 3 is located drive screw 12's tip, baffle 4 is adjacent with tapered roller bearing 3, the retaining ring includes little retaining ring 5 and big retaining ring 10, little retaining ring 5 is located and keeps away from motor one side, big retaining ring is located and is close to motor one side, keeps away from motor 13 one side dish spring 11 is located baffle 4 with between the little retaining ring 5, be close to motor 13 one side dish spring 11 is located baffle 4 with between the big retaining ring 10, drive nut 8 is adjacent with big retaining ring 10.
The power input subassembly is provided with monitoring devices, monitoring devices includes travel switch 6, switch mounting panel 7 and switch action board 9, travel switch 6 passes through the fix with screw switch mounting panel 7 is last, and switch mounting panel 7 passes through the fix with screw on framework 1, switch action board 9 is installed on drive nut 8, travel switch 6 monitors switch action board 9 positions, monitors drive nut 8's position promptly.
The driving plate shaft 19 is sequentially provided with a bearing 20, a small spacer 21, a driving plate 23, a large spacer 24, a driving plate 23, a small spacer 21, a bearing 20, a middle spacer 18 and a large gear 17, the axial displacement of parts on the shaft is limited at two ends by shaft elastic check rings, and the displacement of the bearing 20 at two ends is limited by a pressing plate 22 fixed on the framework 1.
One end of the output gear 27 is mounted on a bearing in the frame 1, and the other end is mounted on a bearing in a gear seat 28, and the gear seat 28 is fixed on the frame 1 by screws.
As shown in fig. 8, the embodiment of the present invention will be specifically described by taking the ground-side closing as an example. After receiving a grounding side switching-on instruction, the grounding side motor 13 rotates forward to drive the side transmission nut 8 to move linearly along a matching groove on the mechanism frame 1 in the switching-on direction, when a switch action plate 9 fixed on the transmission nut 8 touches a travel switch 6 installed on a switch installation plate 7, the grounding side motor 13 is cut off, the transmission nut 8 continues to move in the switching-on direction due to motion inertia until touching a small check ring 5, braking is performed due to buffering of a disc spring 11 inside the transmission nut, at the moment, the drive plate 23 is driven by a small roller 25 and a large roller 26 on the transmission nut 8 to rotate by a fixed angle, and finally the mechanism outputs a fixed angle through meshing of a large gear 17 and an output gear 27 to drive a three-position switch to complete grounding switching-on.
After receiving a grounding side brake-separating instruction, a grounding side motor 13 rotates reversely to drive the side transmission nut 8 to linearly move along a matching groove on the machine frame 1 in the brake-separating direction, when a switch action plate 9 fixed on the transmission nut 8 touches a travel switch 6 installed on a switch installation plate 7, the grounding side motor 13 is cut off, the transmission nut 8 continues to move in the brake-separating direction due to motion inertia until touching a large retainer ring 10, braking is performed due to buffering of an internal disc spring 11, at the moment, a driving plate 23 is driven by a small roller 25 and a large roller 26 on the transmission nut 8 to rotate by a fixed angle, and finally the mechanism outputs a fixed angle through meshing of a large gear 17 and an output gear 27 to drive a three-position switch to complete grounding brake-separating.
As shown in fig. 9, the isolation-side switching-on state is a state in which the principle of motion of the isolation-side switching-on and the principle of motion of the ground-side switching-on and the principle of motion of the isolation-side switching-off are the same.
The motor direct-drive type large-torque three-station electric mechanism for the common box has a simple structure, and particularly, when the transmission nut 8 moves linearly along the transmission lead screw 12, the roller can be inserted into the driving groove of the driving plate 23, so that the driving plate 23 rotates to drive the large gear 17 to rotate, and then the large gear 17 and the output gear 27 rotate to output torque.
In addition, the distance between the outer edge of the driving groove of the driving plate 23 and the axis of the plate shaft 19 is greater than or equal to the distance between the driving screw 12 and the axis of the plate shaft 19, so that the driving plate 23 and the roller on the driving nut 8 are matched to form a mechanical lock, and the isolation side and the grounding side can not be simultaneously switched on mechanically.
The electric mechanism has compact structure, safety and reliability, simple processing technology of the mechanism frame 1 and low production cost; the stroke of the transmission nut 8 is large, the output gear 27 is low in output rotating speed and large in output torque while meeting the switching-on and switching-off time requirement, and the problem of motor burning caused by clamping stagnation of the three-position switch body can be effectively solved.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a big moment of torsion of motor direct drive formula is three station electric machanism for case altogether which characterized in that: the power input assembly, the transmission assembly and the output assembly are mounted on the machine frame (1), and the power input assembly is connected with the output assembly through the transmission assembly;
the power input assembly comprises a motor (13), a transmission lead screw (12), a transmission nut (8) and a roller, the output end of the motor (13) is connected with the transmission lead screw (12), the transmission nut (8) is meshed with the transmission lead screw (12), a mounting column is arranged on the transmission nut (8), and the roller is mounted on the mounting column;
the transmission assembly comprises a driving plate (23), a driving plate shaft (19) and a large gear (17), the driving plate (23) and the large gear (17) are installed on the driving plate shaft (19), and a driving groove matched with the roller is formed in the driving plate (23);
the distance between the outer edge of the driving groove and the axis of the driving plate shaft (19) is more than or equal to the distance between the transmission screw rod (12) and the axis of the driving plate shaft (19); the edge of the driving groove, which is in contact with the roller, forms an included angle with the axis of the transmission lead screw (12);
the output assembly comprises an output gear (27), and the output gear (27) is meshed with the large gear (17).
2. The motor direct-drive large-torque three-station electric mechanism for the common box as claimed in claim 1, wherein: the middle part of the transmission nut (8) is provided with a threaded hole, and the mounting column is positioned in the direction vertical to the threaded hole.
3. The motor direct-drive large-torque three-station electric mechanism for the common box as claimed in claim 1, wherein: the mounting column comprises a long column and a short column, the rollers comprise a large roller (26) and a small roller (25), one large roller (26) and one small roller (25) are mounted on the long column, and two small rollers (25) are mounted on the short column.
4. The motor direct-drive large-torque three-station electric mechanism for the common box as claimed in claim 3, characterized in that: the driving plates (23) comprise two driving plates, the driving plate (23) close to the side of the large gear (17) is matched with the large roller (26) on the long column, and the driving plate (23) far away from the side of the large gear (17) is matched with the small roller (25) of the short column.
5. The motor direct-drive large-torque three-station electric mechanism for the common box as claimed in claim 1, wherein: the driving plate (23) is of a mushroom-shaped structure, the driving groove is located between the mushroom cap structure and the mushroom stem structure, and the edge of the mushroom stem structure, which is in contact with the roller, and the axis of the transmission screw rod (12) form an included angle of 1-2 degrees.
6. The motor direct-drive large-torque three-position electric mechanism for the common box as claimed in any one of claims 1 to 5, wherein: tapered roller bearing (3), baffle (4), dish spring (11) and retaining ring are installed respectively to the both ends of drive screw (12), tapered roller bearing (3) are located the tip of drive screw (12), baffle (4) are adjacent with tapered roller bearing (3), the retaining ring includes little retaining ring (5) and big retaining ring (10), little retaining ring (5) are located and keep away from motor one side, big retaining ring (10) are located and are close to motor one side, dish spring (11) be located respectively baffle (4) with between little retaining ring (5) and baffle (4) with between big retaining ring (10), drive nut (8) are adjacent with big retaining ring (10).
7. The motor direct-drive large-torque three-position electric mechanism for the common box as claimed in any one of claims 1 to 5, wherein: the power input assembly is provided with monitoring devices, monitoring devices includes travel switch (6), switch mounting panel (7) and switch action board (9), travel switch (6) are fixed through the screw switch mounting panel (7) are last, and switch mounting panel (7) are fixed on framework (1) through the screw, install on drive nut (8) switch action board (9), travel switch (6) monitoring switch action board (9) position.
8. The motor direct-drive large-torque three-position electric mechanism for the common box as claimed in any one of claims 1 to 5, wherein: the axial displacement of parts on the shaft is limited by the elastic retainer ring for the shaft at two ends, and the displacement of the bearing (20) is limited by the pressing plate (22) fixed on the machine frame (1) at two ends.
9. The motor direct-drive large-torque three-position electric mechanism for the common box as claimed in any one of claims 1 to 5, wherein: one end of the output gear (27) is installed on a bearing in the machine frame (1), the other end of the output gear is installed on a bearing in the gear seat (28), and the gear seat (28) is fixed on the machine frame (1) through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010177663.6A CN111354579A (en) | 2020-03-13 | 2020-03-13 | Motor direct-drive type large-torque three-station electric mechanism for common box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010177663.6A CN111354579A (en) | 2020-03-13 | 2020-03-13 | Motor direct-drive type large-torque three-station electric mechanism for common box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111354579A true CN111354579A (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010177663.6A Pending CN111354579A (en) | 2020-03-13 | 2020-03-13 | Motor direct-drive type large-torque three-station electric mechanism for common box |
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| CN (1) | CN111354579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410072A (en) * | 2021-06-25 | 2021-09-17 | 西安西电高压开关操动机构有限责任公司 | Transmission system control device for simplifying multi-circle output |
-
2020
- 2020-03-13 CN CN202010177663.6A patent/CN111354579A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410072A (en) * | 2021-06-25 | 2021-09-17 | 西安西电高压开关操动机构有限责任公司 | Transmission system control device for simplifying multi-circle output |
| CN113410072B (en) * | 2021-06-25 | 2024-04-23 | 西安西电高压开关操动机构有限责任公司 | Transmission system control device for simplifying multi-turn output |
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