CN109686597B - Three-station mechanism - Google Patents
Three-station mechanism Download PDFInfo
- Publication number
- CN109686597B CN109686597B CN201811532129.1A CN201811532129A CN109686597B CN 109686597 B CN109686597 B CN 109686597B CN 201811532129 A CN201811532129 A CN 201811532129A CN 109686597 B CN109686597 B CN 109686597B
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- China
- Prior art keywords
- swing arm
- support frame
- shaft
- push
- opening
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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
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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
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
Abstract
The invention discloses a three-station mechanism which comprises a support frame, wherein two transmission devices are arranged on the support frame, each transmission device comprises a transmission shaft which is rotatably arranged on the support frame, a first swing arm, a second swing arm, a third swing arm and a fourth swing arm are arranged on the transmission shaft, the first swing arm is fixed on the transmission shaft, the second swing arm, the third swing arm and the fourth swing arm are rotatably sleeved on the transmission shaft, the second swing arm and the fourth swing arm are connected through a connecting rod, notches are formed in the first swing arm and the third swing arm, the connecting rod is positioned in the notches, a switching-on and switching-off shaft is further rotatably arranged on the support frame, the fourth swing arm is connected with the switching-on and switching-off shaft through a locking plate which is rotatably arranged on the support frame, the third swing arm is hinged with one end of a push-pull rod, the other end of the push-pull. Its purpose is in order to provide a simple to operate, three station mechanisms that divide-shut brake became invalid can not appear.
Description
Technical Field
The invention relates to electrical equipment, in particular to a three-position mechanism for an isolation switch and a load switch.
Background
The isolating mechanism and the grounding mechanism of the switch on the market generally use two or one overshoot spring and one main shaft to complete the switching-on and switching-off operations. The mechanism has the advantages of simple structure, but has the corresponding disadvantages that the overshoot spring is generally arranged on the shell or the bracket, the installation is inconvenient and the appearance is not attractive, and the most important problem is the condition that the opening and closing are failed; still another isolation mechanism is a coil spring mechanism, which is somewhat bulky and expensive.
Disclosure of Invention
The invention aims to provide a three-station mechanism which is convenient to install and cannot cause opening and closing failure.
The invention relates to a three-station mechanism, which comprises a support frame, wherein two transmission devices are symmetrically arranged on the support frame, each transmission device comprises a transmission shaft which is rotatably arranged on the support frame, a first swing arm, a second swing arm, a third swing arm and a fourth swing arm are arranged on the transmission shaft, the first swing arm is fixed on the transmission shaft, the second swing arm, the third swing arm and the fourth swing arm are rotatably sleeved on the transmission shaft, the second swing arm and the fourth swing arm are connected through a connecting rod, notches are formed in the first swing arm and the third swing arm, the connecting rod is positioned in the notches, a brake opening and closing shaft is further rotatably arranged on the support frame, the fourth swing arm is connected with the brake opening and closing shaft through a locking plate which is rotatably arranged on the support frame, the fourth swing arm controls the locking state of the brake opening and closing shaft through the locking plate, and the third swing arm is hinged with, the other end of the push-pull rod is hinged with the opening and closing brake shaft, and an overshoot spring is hinged between the second swing arms in the two transmission devices.
According to the three-station mechanism, the cam structure is arranged on the fourth swing arm, the roller which is in contact with the cam structure is arranged at one end of the locking plate, the locking hook is arranged at the other end of the locking plate, the fifth swing arm is fixedly arranged on the opening and closing shaft, the convex column which is coaxially arranged with the opening and closing shaft is fixedly arranged on the fifth swing arm, and the locking hook on the locking plate is positioned on the convex column.
The invention relates to a three-station mechanism, wherein the specific mode of hinging a push-pull rod and a switching-off and switching-on shaft is as follows: the push-pull rod is hinged with the convex column on the fifth swing arm.
According to the three-station mechanism, the first swing arm is provided with the limiting groove, the support frame is provided with the limiting rod, and the limiting rod is located in the limiting groove.
According to the three-station mechanism, the switching-on/off shaft is fixedly provided with the push plate, the push rod is fixedly arranged on the push plate, the support frame is provided with two baffle plates in a sliding manner, the two baffle plates are respectively positioned on two sides of the push rod, and the reset spring is arranged between the baffle plates and the support frame.
The three-station mechanism comprises a support frame, a support plate and a connecting column, wherein the support frame comprises two support plates which are oppositely arranged, and the two support plates are fixedly connected through the connecting column.
The three-station mechanism is different from the prior art in that when a transmission shaft in the transmission device rotates (closing operation), a first swing arm is driven to rotate, the first swing arm drives a second swing arm and a fourth swing arm to rotate simultaneously through a connecting rod, the fourth swing arm rotates, a switching-on/off shaft is unlocked through a locking plate, the second swing arm rotates to achieve overshoot motion of a overshoot spring, then, under the driving of the connecting rod, the third swing arm rotates, and the third swing arm pushes the switching-on/off shaft to rotate through a push-pull rod so as to complete closing operation. When the transmission shaft rotates in the reverse direction, the opening operation is realized. The whole mechanism is convenient to install, and the condition that the opening and closing are invalid cannot occur.
The invention will be further explained with reference to the drawings.
Drawings
FIG. 1 is a front view of the three-position mechanism of the present invention;
FIG. 2 is a schematic view of the three-position mechanism of FIG. 1 with the support plate removed;
FIG. 3 is a perspective view of the three-position mechanism of the present invention;
FIG. 4 is a schematic view of the three-position mechanism of FIG. 3 with the support plate removed;
FIG. 5 is a schematic view taken along line A in FIG. 3;
FIG. 6 is a schematic view of the three-position mechanism of FIG. 5 with the support plate removed;
FIG. 7 is a further perspective view of the three-position mechanism of the present invention;
fig. 8 is a schematic view of the three-position mechanism of fig. 7 with the support plate removed.
Detailed Description
As shown in fig. 1 and in combination with fig. 2-4, the three-station mechanism of the invention comprises a support frame, wherein two transmission devices are symmetrically arranged on the support frame, and the two transmission devices have the same structure. The transmission device comprises a transmission shaft 1 rotatably mounted on a support frame, a first swing arm 2, a second swing arm 3, a third swing arm 4 and a fourth swing arm 5 are arranged on the transmission shaft 1, the first swing arm 2 is fixed on the transmission shaft 1, the second swing arm 3, the third swing arm 4 and the fourth swing arm 5 are rotatably sleeved on the transmission shaft 1, the second swing arm 3 and the fourth swing arm 5 are connected through a connecting rod 6, notches are formed in the first swing arm 2 and the third swing arm 4, the connecting rod 6 is positioned in the notches, a switching-on/off shaft 7 is further rotatably mounted on the support frame, the fourth swing arm 5 is connected with the switching-on/off shaft 7 through a locking plate 8 rotatably mounted on the support frame, the fourth swing arm 5 controls the locking state of the switching-on/off shaft 7 through the locking plate 8, the third swing arm 4 is hinged with one end of a push-pull rod 9, and the other end of the push-pull rod 9 is hinged with the switching-on/, a overshoot spring 10 is hinged between the second swing arms 3 in the two transmission devices.
According to the three-station mechanism, the cam structure 11 is arranged on the fourth swing arm 5, the roller 12 which is in contact with the cam structure 11 is arranged at one end of the locking plate 8, the locking hook is arranged at the other end of the locking plate 8, the opening and closing shaft 7 is fixedly provided with the fifth swing arm 13, the convex column 14 which is coaxially arranged with the opening and closing shaft 7 is fixedly arranged on the fifth swing arm 13, and the locking hook on the locking plate 8 is positioned on the convex column 14.
As shown in fig. 2 and in combination with fig. 4, the fourth swing arm 5 controls the locking state of the opening/closing shaft 7 through the lock plate 8 as follows: when the latch hook on the lock plate 8 is located on the convex column 14, the latch hooks on the two lock plates 8 are mutually matched, and the convex column 14 is clamped in the semicircular groove formed by the two latch hooks, so that the convex column 14 can be limited to move leftwards and rightwards, and the opening and closing shaft 7 is limited to rotate as a result, and the opening and closing shaft 7 is in a locking state. When the transmission shaft 1 on the left side rotates clockwise, the fourth swing arm 5 also rotates clockwise, and the cam structure 11 is arranged on the fourth swing arm 5, so that the roller 12 is pressed downwards when the fourth swing arm 5 rotates clockwise, the latch hook arranged at the other end of the lock plate 8 can be lifted upwards to leave the convex column 14, and the opening and closing shaft 7 is in an unlocking state at the moment.
The invention relates to a three-station mechanism, wherein the specific mode that a push-pull rod 9 is hinged with a brake opening and closing shaft 7 is as follows: the push-pull rod 9 is hinged with a convex column 14 on the fifth swing arm 13.
According to the three-station mechanism, the first swing arm 2 is provided with a limiting groove, the support frame is provided with a limiting rod 15, and the limiting rod 15 is located in the limiting groove. Notch and spacing groove on the first swing arm 2 are located the relative both sides of first swing arm 2 respectively, and gag lever post 15 is used for the rotation range of restriction first swing arm 2.
As shown in fig. 5, and with reference to fig. 6 to 8, in the three-station mechanism of the present invention, a push plate 16 is fixed on the opening/closing shaft 7, a push rod 17 is fixed on the push plate 16, two blocking plates 18 are slidably disposed on the support frame, the two blocking plates 18 are respectively located at two sides of the push rod 17, and a return spring (not shown in the figure) is disposed between the blocking plates 18 and the support frame.
As shown in fig. 8, the baffle 18 is T-shaped, and includes a transverse plate and a vertical plate connected to each other, a transverse sliding groove is formed in the transverse plate, a guide post is fixedly arranged on the support frame, the guide post is located in the transverse sliding groove, and when the opening and closing shaft 7 rotates to realize opening and closing, the push rod 17 can push the vertical plate and further make the baffle 18 transversely slide. The function of the baffle 18 is described by taking the left transmission shaft 1 as an example, when the left transmission shaft 1 is operated to rotate clockwise (closing operation), the switching shaft 7 can finally rotate clockwise, at this time, the push rod 17 swings to the right, the push rod 17 pushes the right baffle 18 to block the operation hole of the right transmission shaft 1, and the right transmission shaft 1 can not be switched. Similarly, when the right transmission shaft 1 is operated to rotate counterclockwise (closing operation), the push rod 17 can finally swing to the left, and the push rod 17 can push the left baffle 18 to block the operation hole of the left transmission shaft 1, so that the left transmission shaft 1 cannot be opened or closed.
As shown in fig. 3, the supporting frame includes two supporting plates 19 disposed opposite to each other, and the two supporting plates 19 are fixedly connected to each other by a connecting column 20.
As shown in fig. 6, the support frame is further provided with a limit plate 21, one end of the opening and closing shaft 7 penetrates through the limit plate 21 and is fixedly provided with the push plate 16 thereon, the limit plate 21 is provided with an arc-shaped limit hole 22, the push rod 17 penetrates through the limit hole 22 on the limit plate 21, and when the opening and closing shaft 7 rotates, the push rod 17 swings left and right along the limit hole 22.
As shown in fig. 4, taking the left transmission device as an example for explanation, when the transmission shaft 1 rotates clockwise (closing operation), the first swing arm 2 is driven to rotate, the first swing arm 2 drives the second swing arm 3 and the fourth swing arm 5 to rotate clockwise through the connecting rod 6, in this process, the cam structure 11 of the fourth swing arm 5 presses the roller 12 on the locking plate 8 downward, the other end of the locking plate 8 (i.e. the end provided with the locking hook) lifts upward, and then the locking hook of the locking plate 8 is separated from the convex column 14 on the fifth swing arm 13, so as to achieve an unlocking state. The second swing arm 3 rotates to realize the overshoot motion of the overshoot spring 10, then, the third swing arm 4 rotates clockwise under the driving of the connecting rod 6, and the third swing arm 4 pushes the switching-on/off shaft 7 to rotate clockwise through the push-pull rod 9 so as to complete the switching-on operation. When the transmission shaft 1 rotates reversely, the opening operation is realized.
As shown in fig. 4, the operation principle of the right-side transmission is the same as that of the left-side transmission, and only a brief description will be given below. When the transmission shaft 1 rotates counterclockwise (closing operation), the opening/closing shaft 7 is finally rotated counterclockwise to complete the closing operation. When the transmission shaft 1 rotates reversely, the opening operation is realized.
From the above discussion, it can be seen that there are three stations in the present invention: a switching-off station and two switching-on stations. Two closing stations are realized by respectively rotating the opening and closing shaft 7 clockwise and anticlockwise from the opening and closing station. The invention can be used for an isolating switch and a load switch, and when the invention is used for the isolating switch, two closing stations are respectively isolated closing and grounding closing.
The invention has the following advantages:
1. the whole small of mechanism, applicable in miniaturized switch structure, occupation space is little and simple to operate.
2. The mechanism has high reliability, the opening and closing limit is built-in, and secondary adjustment is not needed.
3. The switching-on and switching-off are self-provided with interlocking, and no additional interlocking is needed, so that the whole switch cabinet is more convenient to install.
4. The mechanism is symmetrical in movement, high in applicability and convenient to adapt to structure adjustment of the whole switch.
5. The whole mechanism is convenient to install, and the condition that the opening and closing are invalid cannot occur.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (5)
1. The utility model provides a three station mechanisms which characterized in that: the brake system comprises a support frame, two transmission devices are symmetrically arranged on the support frame, each transmission device comprises a transmission shaft which is rotatably arranged on the support frame, a first swing arm, a second swing arm, a third swing arm and a fourth swing arm are arranged on the transmission shaft, the first swing arm is fixed on the transmission shaft, the second swing arm, the third swing arm and the fourth swing arm are rotatably sleeved on the transmission shaft, the second swing arm and the fourth swing arm are connected through a connecting rod, notches are formed in the first swing arm and the third swing arm, the connecting rod is positioned in the notches, a brake opening and closing shaft is further rotatably arranged on the support frame, the fourth swing arm is connected with the brake opening and closing shaft through a locking plate which is rotatably arranged on the support frame, the locking state of the brake opening and closing shaft is controlled through the locking plate, the third swing arm is hinged with one end of a push-pull rod, and the other end of the push-pull, a overshoot spring is hinged between the second swing arms in the two transmission devices,
the fourth swing arm is provided with a cam structure, one end of the locking plate is provided with a roller which is contacted with the cam structure, the other end of the locking plate is provided with a locking hook, a fifth swing arm is fixedly arranged on the opening and closing shaft, a protruding column which is coaxially arranged with the opening and closing shaft is fixedly arranged on the fifth swing arm, and the locking hook on the locking plate is positioned on the protruding column.
2. The three-station mechanism of claim 1, wherein: the specific mode that the push-pull rod is hinged with the opening and closing brake shaft is as follows: the push-pull rod is hinged with the convex column on the fifth swing arm.
3. The three-station mechanism of claim 2, wherein: be equipped with the spacing groove on the first swing arm, be equipped with the gag lever post on the support frame, the gag lever post is located the spacing inslot.
4. The three-station mechanism of claim 3, wherein: the brake closing and opening device is characterized in that a push plate is fixedly arranged on the brake closing and opening shaft, a push rod is fixedly arranged on the push plate, two baffles are arranged on the support frame in a sliding mode and are respectively located on two sides of the push rod, and a reset spring is arranged between each baffle and the support frame.
5. The three-station mechanism of claim 4, wherein: the support frame includes the backup pad of two relative settings, passes through spliced pole fixed connection between two backup pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532129.1A CN109686597B (en) | 2018-12-14 | 2018-12-14 | Three-station mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532129.1A CN109686597B (en) | 2018-12-14 | 2018-12-14 | Three-station mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109686597A CN109686597A (en) | 2019-04-26 |
| CN109686597B true CN109686597B (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811532129.1A Active CN109686597B (en) | 2018-12-14 | 2018-12-14 | Three-station mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN109686597B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701002B (en) * | 2020-12-14 | 2023-08-25 | 河南平高电气股份有限公司 | Three-station operating mechanism |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2385425Y (en) * | 1999-08-09 | 2000-06-28 | 李广宇 | Vacuum arc-extinguishing chamber mechanism |
| CN201134387Y (en) * | 2007-12-20 | 2008-10-15 | 林建平 | Trip mechanism for vacuum switch |
| CN202917337U (en) * | 2012-08-13 | 2013-05-01 | 上海精诚工控电子科技有限公司 | Electrically-operated mechanism of switch |
| CN203787343U (en) * | 2013-09-24 | 2014-08-20 | 许继集团有限公司 | Hand-operated spring operation mechanism |
| CN103871773B (en) * | 2014-03-25 | 2016-04-13 | 厦门凯能电力科技有限公司 | Three station operating mechanisms |
| CN206697432U (en) * | 2017-05-10 | 2017-12-01 | 江苏大全凯帆开关有限公司 | A kind of bounce-proof of breaker and the operating mechanism of protecting against shock |
| CN107170595A (en) * | 2017-06-05 | 2017-09-15 | 河南平高电气股份有限公司 | A kind of mechanical position limitation mechanism and three station operating mechanisms using the mechanism |
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2018
- 2018-12-14 CN CN201811532129.1A patent/CN109686597B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109686597A (en) | 2019-04-26 |
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