CN110993383A - Three-station operating device for load switch - Google Patents
Three-station operating device for load switch Download PDFInfo
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- CN110993383A CN110993383A CN201911192133.2A CN201911192133A CN110993383A CN 110993383 A CN110993383 A CN 110993383A CN 201911192133 A CN201911192133 A CN 201911192133A CN 110993383 A CN110993383 A CN 110993383A
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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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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A three-station operating device for a load switch comprises a first side plate and a second side plate which are arranged oppositely and in parallel, and further comprises a switch-on operating shaft, a grounding operating shaft, an output shaft, a first transmission connecting rod, a second transmission connecting rod, a spring assembly, a limiting shaft and an isolation limiting device, wherein the switch-on operating shaft and the grounding operating shaft are arranged in bilateral symmetry, the switch-on operating shaft and the grounding operating shaft are arranged in an inverted triangle with the output shaft, the spring assembly is positioned between the switch-on operating shaft and the grounding operating shaft and is in pin joint through a first pin shaft, the isolation limiting device is arranged corresponding to the output shaft in a contact manner, the switch-on operating shaft and the output shaft are in linkage connection through the first transmission connecting rod, the grounding operating shaft and the output shaft are in linkage connection through the second transmission connecting rod, the first transmission connecting rod and the second transmission connecting rod are respectively provided with a long, the long circular groove is matched with the energy storage and release processes of the spring assembly; novel structure, high efficiency of operation and few transmission links.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to a three-position operating device for a bidirectional quick-acting load switch with quick breaking and closing capabilities.
Background
The ring main unit is a group of electric equipment which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring main power supply unit, is used as main equipment for protecting and sectionally isolating a cable distribution network, and is widely applied to an urban power grid in terms of safe, reliable, compact and attractive appearance.
At present, with the rapid development of national power grids, the application of miniaturized and compact ring main units is widely applied. The ring main unit generally has three stations of closing, opening and grounding, and the three stations are operated by an operating device of a three-station load switch of the ring main unit. In a ring main unit product, a three-station operating mechanism is a key mechanism of the ring main unit product, and the opening and closing reliability of a three-station disconnecting link is guaranteed. The three-station operating mechanism used by the existing RVAC series products has large volume, complex structure, more parts, difficult assembly and high cost. Therefore, a three-station operating device with small volume, simple structure, few parts, reliable performance and low cost needs to be developed to meet the requirements of modern practical use.
Disclosure of Invention
In view of the above, in order to solve the above-mentioned deficiencies of the prior art, the present invention aims to provide a three-position operating device for a load switch, which has a novel structure and high operation efficiency, and is simpler in structure, easier to assemble, more convenient to maintain, lower in manufacturing cost, and also suitable for an isolating switch, and has a wide application prospect, compared with the existing operating mechanism.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a three-station operating device for a load switch comprises a first side plate and a second side plate which are arranged oppositely and in parallel, and further comprises a switch-on operating shaft, a grounding operating shaft, an output shaft, a first transmission connecting rod, a second transmission connecting rod, a spring assembly, a limiting shaft and an isolation limiting device, wherein the switch-on operating shaft, the output shaft, the grounding operating shaft and the limiting shaft are sequentially arranged between the first side plate and the second side plate, the switch-on operating shaft, the output shaft and the grounding operating shaft penetrate through the outer side surface of the second side plate, and the spring assembly and the isolation limiting device are respectively arranged on the inner side surface of the first side plate;
the switch-on operation shaft and the grounding operation shaft are arranged in bilateral symmetry, the switch-on operation shaft and the grounding operation shaft and the output shaft are arranged in an inverted triangle, the spring assembly is positioned between the switch-on operation shaft and the grounding operation shaft and is in pin joint through a first pin shaft, the isolation limiting device is arranged in a contact way corresponding to the output shaft, the switch-on operation shaft and the output shaft are in linkage connection through a first transmission connecting rod, the grounding operation shaft and the output shaft are in linkage connection through a second transmission connecting rod, the first transmission connecting rod and the second transmission connecting rod are respectively provided with a long circular groove for realizing free conversion and effective limiting of the output shaft among the switch-on position, the isolation position and the grounding position, and the long circular grooves are matched with the;
the switch-on operation shaft is provided with a first crank arm, a second crank arm and a first round hole, the ground operation shaft is provided with a third crank arm, a fourth crank arm and a third round hole, a fifth crank arm, a first limit crank arm, a second limit crank arm and an output shaft sleeve are sequentially arranged on a main shaft of the output shaft, and the spring assembly comprises a first spring support plate, a second spring support plate, a first guide shaft, a second guide shaft, a first spring and a second spring.
Furthermore, the first spring support plate is fixedly connected with the first guide shaft, the second spring support plate is fixedly connected with the second guide shaft, the hollow first guide shaft is sleeved on the second guide shaft, the first spring is sleeved on the second spring, the second spring is sleeved on the first guide shaft, and the first spring and the second spring are both limited between the first spring support plate and the second spring support plate.
Furthermore, the first spring support plate is in pin joint with a first crank arm of the switch-on operating shaft through a first pin shaft, and the second spring support plate is in pin joint with a third crank arm of the grounding operating shaft through a first pin shaft.
Furthermore, one end of the first transmission connecting rod and one end of the second transmission connecting rod are provided with a long circular groove, the other end of the first transmission connecting rod and the other end of the second transmission connecting rod are provided with a second circular hole, the second circular hole of the first transmission connecting rod is in pin joint with a second crank arm of the switch-on operating shaft through a fourth pin shaft, the second circular hole of the second transmission connecting rod is in pin joint with a fourth crank arm of the grounding operating shaft through a second pin shaft, the long circular groove of the first transmission connecting rod is in pin joint with a fifth crank arm of the output shaft through a third pin shaft, the long circular groove of the second transmission connecting rod is in pin joint with a fifth crank arm of the output shaft through a third pin shaft, and the third pin shaft rotates and.
Further, the limiting shaft comprises a switch-on switch-off limiting shaft, a switch-on limiting shaft, an output grounding switch-on limiting shaft, an output switch-on limiting shaft, a grounding switch-on limiting shaft and a grounding switch-off limiting shaft which are all arranged between the first side plate and the second side plate.
Furthermore, the isolation limiting device comprises a limiting pin, a limiting plate, a fixed pin and a torsion spring, wherein one end of the limiting plate is fixedly provided with the limiting pin, the other end of the limiting plate is in pin joint with the fixed pin fixed on the first side plate, and the torsion spring is sleeved on the fixed pin; the isolation limiting device is reliably contacted with the groove of the second limiting crank arm of the output shaft under the action of the torsion spring, and effective limiting of the three stations at the isolation position is achieved.
Further, the matching positions of the switch-on operating shaft, the grounding operating shaft, the output shaft, the limiting shaft, the first side plate and the second side plate are respectively provided with a shaft sleeve, and the first side plate and the second side plate are structural frame supporting plates and are provided with mounting holes and process holes matched with each other.
The invention has the beneficial effects that:
a three-station operating device for a load switch has the advantages of novel structure, high efficiency in operation, less transmission links, effective limitation of a long circular groove (idle stroke) of a transmission connecting rod on an output shaft, realization of synchronization of switching on and reduction of switching-off overshoot; compared with the existing operating mechanism, the structure is simpler, the volume is smaller, the assembly is easier, the maintenance is more convenient, the manufacturing cost is lower, the modular design is adopted, the characteristic test can be independently carried out, and the operating mechanism is suitable for mass production. Also suitable for isolating switches and has wide application prospect. The concrete points are as follows:
according to the invention, the transmission connecting rod is in linkage connection with the operating shaft and the output shaft, the crank arm on the operating shaft drives the spring assembly to store energy and simultaneously drives the transmission connecting rod to move to the long circular groove idle stroke, the operating shaft is continuously operated to rotate, when the spring assembly releases energy to a certain degree during passing, the transmission connecting rod moves to one end of the long circular groove, at the moment, the transmission connecting rod can drive the output shaft to rapidly rotate to drive the three-position switch to rapidly open and close, and the capacity requirements of closing and opening of the three-position switch are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view showing a structure of a key-on operation shaft;
FIG. 4 is a schematic structural view of a grounded operating shaft;
FIG. 5 is a schematic structural view of an output shaft;
FIG. 6 is a schematic view of the spring assembly;
FIG. 7 is a schematic view of the construction of the guide shaft of the spring assembly;
FIG. 8 is a schematic structural view of an isolation and position limiting device;
FIG. 9 is a schematic view of a first drive link;
FIG. 10 is a schematic view of a second drive link;
FIG. 11 is a schematic structural view of a second limit crank arm of the output shaft;
the labels in the figure are: 1. the connecting operation shaft 101, the first crank arm 102, the second crank arm 103, the first round hole 2, the first transmission link 3, the second transmission link 4, the output shaft 401, the fifth crank arm 402, the first limit crank arm 403, the second limit crank arm 4031, the groove 404, the output shaft sleeve 405, the main shaft 5, the grounding operation shaft 501, the third crank arm 502, the fourth crank arm 503, the third round hole 6, the first pin shaft 7, the first side plate 8, the second side plate 9, the second pin shaft 10, the third pin shaft 11, the spring assembly 1101, the first spring support plate 1102, the second spring support plate, the fixing pin, the first spring 1104, the second spring 1105, the first guide shaft 1106, the second guide shaft 12, the fourth pin shaft 13, the shaft sleeve 14, the isolation limit device, the limit pin 1403, the limit pin 1402, the limit plate 1403, the limit plate 1404, the limit plate 1403, 1404, the limit plate, 15 parts of a torsion spring, a limiting shaft, 1501 parts of a switching-on and switching-off limiting shaft, 1502 parts of a switching-on and switching-off limiting shaft, 1503 parts of an output grounding switching-on limiting shaft, 1504 parts of an output switching-on and switching-off limiting shaft, 1505 parts of a grounding switching-on and switching-off limiting shaft, 1506 parts of a grounding switching-off limiting shaft, 16 parts of a long circular groove, 17 parts of a second circular hole.
Detailed Description
The following specific examples are given to further clarify, complete and detailed the technical solution of the present invention. The present embodiment is a preferred embodiment based on the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
A three-station operating device for a load switch comprises a first side plate 7 and a second side plate 8 which are arranged oppositely and in parallel, and further comprises a switch-on operating shaft 1, a grounding operating shaft 5, an output shaft 4, a first transmission connecting rod 2, a second transmission connecting rod 3, a spring assembly 11, a limiting shaft 15 and an isolation limiting device 14, wherein the switch-on operating shaft 1, the output shaft 4, the grounding operating shaft 5 and the limiting shaft 15 are sequentially arranged between the first side plate 7 and the second side plate 8, the switch-on operating shaft 1, the output shaft 4 and the grounding operating shaft 5 penetrate through the outer side surface of the second side plate 8, and the spring assembly 11 and the isolation limiting device 14 are respectively arranged on the inner side surface of the first side plate 7; the spring assembly 11 provides the energy required for the rapid action of the device of the present invention;
the switch-on operation shaft 1 and the grounding operation shaft 5 are arranged in bilateral symmetry, the switch-on operation shaft 1 and the grounding operation shaft 5 and the output shaft 4 are arranged in an inverted triangle, the switch-on operation shaft 1 and the grounding operation shaft 5 are identical in structure, the spring assembly 11 is positioned between the switch-on operation shaft 1 and the grounding operation shaft 5 and is connected with the output shaft 4 in a pin joint mode through a first pin shaft 6, the isolation limiting device 14 is arranged in a contact mode corresponding to the output shaft 4, the switch-on operation shaft 1 and the output shaft 4 are connected in a linkage mode through a first transmission connecting rod 2, the grounding operation shaft 5 and the output shaft 4 are connected in a linkage mode through a second transmission connecting rod 3, long circular grooves 16 for realizing free conversion and effective limiting of the output shaft 4 between the switch-on position, the isolation position and the grounding position are formed in the first transmission connecting rod 2 and the second transmission; in the invention, the output shaft 4 is freely switched among three positions of connection, isolation and grounding by using the long circular groove 16 (idle stroke), and the output shaft 4 is limited at three positions of connection, isolation and grounding by using the long circular groove 16 (idle stroke); the long circular groove 16 (idle stroke) is effectively matched with the energy storage and release processes of the spring assembly 11, so that the device can quickly act on switching-on and switching-off and grounding switching-on and switching-off;
the switch-on operation shaft 1 is provided with a first crank arm 101, a second crank arm 102 and a first round hole 103, the grounding operation shaft 5 is provided with a third crank arm 501, a fourth crank arm 502 and a third round hole 503, a main shaft 405 of the output shaft 4 is sequentially provided with a fifth crank arm 401, a first limit crank arm 402, a second limit crank arm 403 and an output shaft sleeve 404, and the spring assembly 11 comprises a first spring support plate 1101, a second spring support plate 1102, a first guide shaft 1105, a second guide shaft 1106, a first spring 1103 and a second spring 1104. Furthermore, the three-position operating device for the load switch is fixedly arranged on the side wall of one side of the load switch cabinet, is in linkage connection with a load switch driving shaft through an output shaft sleeve 404 of the output shaft 4, controls the load switch to be switched among a closing position, an opening position and a grounding position, and can be kept at the closing position, the opening position and the grounding position.
Further, the matching positions of the switch-on operating shaft 1, the grounding operating shaft 5, the output shaft 4, the limiting shaft 15, the first side plate 7 and the second side plate 8 are respectively provided with a shaft sleeve 13, the first side plate 7 and the second side plate 8 are structural frame supporting plates and are provided with mounting holes and process holes which are matched with each other, and the mounting holes and the process holes are multiple and are required for assembling each part.
Further, one end of the first transmission connecting rod 2 and one end of the second transmission connecting rod 3 are provided with a long circular groove 16, the other end of the first transmission connecting rod 3 is provided with a second circular hole 17, the second circular hole 17 of the first transmission connecting rod 2 is in pin joint with the second crank arm 102 of the switch-on operating shaft 1 through a fourth pin shaft 12, the second circular hole 17 of the second transmission connecting rod 3 is in pin joint with the fourth crank arm 502 of the grounding operating shaft 5 through a second pin shaft 9, the long circular groove 16 of the first transmission connecting rod 2 is in pin joint with the fifth crank arm 401 of the output shaft 4 through a third pin shaft 10, the long circular groove 16 of the second transmission connecting rod 3 is in pin joint with the fifth crank arm 401 of the output shaft 4 through a third pin shaft 10, and the third pin shaft 10 rotates and slides in the long circular groove 16. Furthermore, the fourth pin shaft 12 and the second pin shaft 9 can both rotate freely.
Further, the first spring support plate 1101 is fixedly connected with the first guide shaft 1105, the second spring support plate 1102 is fixedly connected with the second guide shaft 1106, the hollow first guide shaft 1105 is sleeved on the second guide shaft 1106, the first spring 1103 is sleeved on the second spring 1104, the second spring 1104 is sleeved on the first guide shaft 1105, and both the first spring 1103 and the second spring 1104 are limited between the first spring support plate 1101 and the second spring support plate 1102. Further, the first spring 1103 and the second spring 1104 are both disposed in a penetrating and sleeved manner.
Further, the first spring support plate 1101 is pinned to the first crank arm 101 of the on operation shaft 1 by a first pin 6, and the second spring support plate 1102 is pinned to the third crank arm 501 of the ground operation shaft 5 by the first pin 6. Both the first crank arm 101 and the third crank arm 501 can rotate freely.
Further, the limit shaft 15 includes a switching-on/switching-off limit shaft 1501, a switching-on/switching-on limit shaft 1502, an output grounded switching-on limit shaft 1503, an output switching-on/switching-on limit shaft 1504, a grounded switching-on limit shaft 1505, and a grounded switching-off limit shaft 1506, which are all disposed between the first side plate 7 and the second side plate 8. The limit of the mechanism and the connection and fixation of the side plates of the frame are both performed.
Further, the isolation limiting device 14 comprises a limiting pin 1401, a limiting plate 1402, a fixing pin 1403 and a torsion spring 1404, wherein one end of the limiting plate 1402 is fixedly provided with the limiting pin 1401, the other end of the limiting plate 1402 is in pin joint with the fixing pin 1403 fixed on the first side plate 7, and the torsion spring 1404 is sleeved on the fixing pin 1403; the isolation limiting device 14 is reliably contacted with the groove 4031 of the second limiting crank arm 403 of the output shaft 4 under the action of the torsion spring 1404, and effective limiting of the three stations at the isolation position is achieved.
The working principle of the invention is as follows:
when a three-station operating device for a load switch is at an isolation position, a spring assembly 11 is arranged between a first crank arm 101 of a switch-on operating shaft 1 and a third crank arm 501 of a grounding operating shaft 5 and is connected with the first crank arm through a first pin shaft 6 in a pin joint mode, meanwhile, a switch-on and switch-off limiting shaft 1501 is arranged on the left side of the first crank arm 1001, and a grounding and switch-off limiting shaft 1506 is arranged on the right side of the third crank arm 501;
when the working position is switched to be switched on and switched off, the switching-on operation shaft 1 is driven to rotate clockwise, the first crank arm 101 compresses the spring assembly 11 to store energy, the second crank arm 102 pulls the first transmission connecting rod 2, the other end of the spring assembly 11 is limited by the grounding switching-off limiting shaft 1506 and can only rotate around the first pin shaft 6, and meanwhile, the long circular groove 16 of the first transmission connecting rod 2 slides along the third pin shaft 10; the operating shaft 1 is continuously rotated and switched on, when the spring assembly 11 releases certain energy in the process, one end of the long circular groove 16 of the first transmission connecting rod 2 is connected with the third pin shaft 10, the output shaft 4 is driven to rapidly rotate anticlockwise through the fifth crank arm 401, and the three-station switch is driven to rapidly switch on through the output shaft sleeve 404;
before the output shaft 4 starts to rotate, the limit pin 1401 of the isolation limiting device 14 is always clamped at the groove 4031 of the second limit crank arm 403, so that the three-station disconnecting link cannot rotate due to the action of gravity, and after the output shaft 4 starts to rotate, the limit pin 1401 of the isolation limiting device 14 gradually disengages from the groove 4031 of the second limit crank arm 403 along with the rotation of the output shaft 4;
when the switching-on position is reached, the switching-on and switching-off limiting shaft 1502 is connected with the first crank arm 101 to limit the movement of the device, and the output shaft switching-on and switching-off limiting shaft 1504 is connected with the first limiting crank arm 402 to limit the rotation of the output shaft 4; therefore, the three-position switch is stabilized at the switching-on position;
when the working position is switched to the switching-on and switching-off, the switching-on operation shaft 1 is driven to rotate anticlockwise, the process is opposite to the above process, and the switching-on and switching-off limiting shaft 1501 is connected with the first crank arm 101 when the isolation position is reached, so that the movement of the device is limited; one end of the long circular groove 16 of the first transmission connecting rod 2 and one end of the long circular groove 16 of the second transmission connecting rod 3 are crossed to clamp the third pin shaft 10, so that the rotation of the output shaft 4 is limited; a limiting pin 1401 of the isolation limiting device 14 falls into a groove 4031 of the second limiting crank arm 403 to limit free rotation of the load switch disconnecting link;
when the grounding on-off working position is switched, the grounding operation shaft 5 is driven to rotate anticlockwise, the process is completely the same as the on-off operation method, and only the movement direction is opposite.
In conclusion, the three-station operating device for the load switch is novel in structure, efficient to operate, less in transmission links, and capable of effectively limiting the output shaft by the long circular groove (idle stroke) of the transmission connecting rod, so that synchronism of closing is realized, and opening overshoot is reduced; compared with the existing operating mechanism, the structure is simpler, the volume is smaller, the assembly is easier, the maintenance is more convenient, the manufacturing cost is lower, the modular design is adopted, the characteristic test can be independently carried out, and the operating mechanism is suitable for mass production. Also suitable for isolating switches and has wide application prospect.
The principal features, principles and advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to explain the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as expressed in the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A three-position operating device for a load switch comprises a first side plate (7) and a second side plate (8) which are oppositely and parallelly arranged, and is characterized in that: the device is characterized by further comprising a switch-on operating shaft (1), a grounding operating shaft (5), an output shaft (4), a first transmission connecting rod (2), a second transmission connecting rod (3), a spring assembly (11), a limiting shaft (15) and an isolation limiting device (14), wherein the switch-on operating shaft (1), the output shaft (4), the grounding operating shaft (5) and the limiting shaft (15) are sequentially arranged between the first side plate (7) and the second side plate (8), the switch-on operating shaft (1), the output shaft (4) and the grounding operating shaft (5) penetrate through the outer side surface of the second side plate (8), and the spring assembly (11) and the isolation limiting device (14) are respectively arranged on the inner side surface of the first side plate (7);
the switch-on operation shaft (1) and the grounding operation shaft (5) are arranged in bilateral symmetry, the switch-on operation shaft and the grounding operation shaft are arranged in an inverted triangle with the output shaft (4), the spring assembly (11) is positioned between the switch-on operation shaft (1) and the grounding operation shaft (5) and is in pin joint with the output shaft (4) through a first pin shaft (6), the isolation limiting device (14) is arranged corresponding to the output shaft (4) in contact, the switch-on operation shaft (1) and the output shaft (4) are in linkage connection through a first transmission connecting rod (2), the grounding operation shaft (5) and the output shaft (4) are in linkage connection through a second transmission connecting rod (3), the first transmission connecting rod (2) and the second transmission connecting rod (3) are respectively provided with a long circular groove (16) for realizing free conversion and effective limiting of the output shaft (4) among three positions of switch-on, isolation and grounding, and the long circular groove (16) and, The energy release process is matched;
be equipped with first crank arm (101), second crank arm (102) and first round hole (103) on switch-on operation axle (1), be equipped with third crank arm (501), fourth crank arm (502) and third round hole (503) on ground connection operation axle (5), be equipped with fifth crank arm (401), first spacing crank arm (402), spacing crank arm of second (403) and output shaft cover (404) on main shaft (405) of output shaft (4) in proper order, spring assembly (11) include first spring backup pad (1101), second spring backup pad (1102), first guiding axle (1105), second guiding axle (1106), first spring (1103) and second spring (1104).
2. The three-position operating device for the load switch according to claim 1, wherein: the first spring support plate (1101) is fixedly connected with a first guide shaft (1105), the second spring support plate (1102) is fixedly connected with a second guide shaft (1106), the hollow first guide shaft (1105) is sleeved on the second guide shaft (1106), the first spring (1103) is sleeved on the second spring (1104), the second spring (1104) is sleeved on the first guide shaft (1105), and the first spring (1103) and the second spring (1104) are both limited between the first spring support plate (1101) and the second spring support plate (1102).
3. The three-position operating device for the load switch according to claim 1, wherein: the first spring support plate (1101) is in pin joint with a first crank arm (101) of the switching-on operation shaft (1) through a first pin shaft (6), and the second spring support plate (1102) is in pin joint with a third crank arm (501) of the grounding operation shaft (5) through the first pin shaft (6).
4. The three-position operating device for the load switch according to claim 1, wherein: one end of each of the first transmission connecting rod (2) and the second transmission connecting rod (3) is provided with a long circular groove (16), the other end of each of the first transmission connecting rod (2) and the second transmission connecting rod (3) is provided with a second circular hole (17), the second circular hole (17) of the first transmission connecting rod (2) is in pin joint with the second crank arm (102) of the switching-on operating shaft (1) through a fourth pin shaft (12), the second circular hole (17) of the second transmission connecting rod (3) is in pin joint with the fourth crank arm (502) of the grounding operating shaft (5) through a second pin shaft (9), the long circular groove (16) of the first transmission connecting rod (2) is in pin joint with the fifth crank arm (401) of the output shaft (4) through a third pin shaft (10), and the third pin shaft (10) rotates and slides in the long circular groove (16).
5. The three-position operating device for the load switch according to claim 1, wherein: the limiting shaft (15) comprises a switching-on switching-off limiting shaft (1501), a switching-on limiting shaft (1502), an output grounding switching-on limiting shaft (1503), an output switching-on limiting shaft (1504), a grounding switching-on limiting shaft (1505) and a grounding switching-off limiting shaft (1506) which are all arranged between the first side plate (7) and the second side plate (8).
6. The three-position operating device for the load switch according to claim 1, wherein: the isolation limiting device (14) comprises a limiting pin (1401), a limiting plate (1402), a fixing pin (1403) and a torsion spring (1404), wherein the limiting pin (1401) is fixedly arranged at one end of the limiting plate (1402), the other end of the limiting plate is in pin joint with the fixing pin (1403) fixed on the first side plate (7), and the torsion spring (1404) is sleeved on the fixing pin (1403); the isolation limiting device (14) is reliably contacted with a groove (4031) of a second limiting crank arm (403) of the output shaft (4) under the action of the torsion spring (1404), and effective limiting of three stations at an isolation position is achieved.
7. The three-position operating device for the load switch according to claim 1, wherein: the connection operation shaft (1), the grounding operation shaft (5), the output shaft (4), the limiting shaft (15) and the matching positions of the first side plate (7) and the second side plate (8) are respectively provided with a shaft sleeve (13), and the first side plate (7) and the second side plate (8) are structural frame supporting plates and are provided with matched mounting holes and process holes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192133.2A CN110993383B (en) | 2019-11-28 | 2019-11-28 | Three-station operating device for load switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192133.2A CN110993383B (en) | 2019-11-28 | 2019-11-28 | Three-station operating device for load switch |
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| CN110993383A true CN110993383A (en) | 2020-04-10 |
| CN110993383B CN110993383B (en) | 2022-06-28 |
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| CN201911192133.2A Active CN110993383B (en) | 2019-11-28 | 2019-11-28 | Three-station operating device for load switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345773A (en) * | 2020-07-17 | 2021-09-03 | 许继集团有限公司 | Three-station operating mechanism, isolation/grounding combination switch and three-station load switch |
| CN115995358A (en) * | 2023-01-10 | 2023-04-21 | 北京昊创瑞通电气设备股份有限公司 | Electric and manual two-station spring operating mechanism |
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| CN113345773A (en) * | 2020-07-17 | 2021-09-03 | 许继集团有限公司 | Three-station operating mechanism, isolation/grounding combination switch and three-station load switch |
| CN113345773B (en) * | 2020-07-17 | 2024-04-16 | 许继集团有限公司 | Three-station operating mechanism, isolation/grounding composite switch and three-station load switch |
| CN115995358A (en) * | 2023-01-10 | 2023-04-21 | 北京昊创瑞通电气设备股份有限公司 | Electric and manual two-station spring operating mechanism |
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| CN110993383B (en) | 2022-06-28 |
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