CN113539732A - Push-pull outdoor isolating switch - Google Patents
Push-pull outdoor isolating switch Download PDFInfo
- Publication number
- CN113539732A CN113539732A CN202110893998.2A CN202110893998A CN113539732A CN 113539732 A CN113539732 A CN 113539732A CN 202110893998 A CN202110893998 A CN 202110893998A CN 113539732 A CN113539732 A CN 113539732A
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- CN
- China
- Prior art keywords
- contact
- hole
- push
- support
- operating rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/502—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position the action of the contact pressure spring becoming active only after engagement of the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
- H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
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- Push-Button Switches (AREA)
Abstract
The invention discloses a push-pull type outdoor isolating switch, which consists of a support, an operating rod, a push head, a contact knife, an insulator, a first contact seat, a second contact seat and two spring contacts, wherein the push head is arranged on the support; the beneficial technical effects of the invention are as follows: the scheme can effectively improve the current carrying capacity and the action accuracy of the isolating switch and can also improve the heating problem caused by poor contact.
Description
Technical Field
The invention relates to a power switch, in particular to a push-pull type outdoor isolating switch.
Background
The isolating switch for the distribution line in the prior art has the following problems: 1. insufficient current carrying capacity: the movable contact knife is combined by two copper bars, so that the contact area is small, the current-carrying capacity is insufficient, the strength is low, and the movable contact knife is easy to deform under the influence of short-circuit faults; 2. contact of the contact is unreliable: the isolating switch adopts 2 insulators, and the static contact is nonparallel with the moving contact surface after the installation atress, easily generates heat to installation deformation still can lead to situations such as closing a floodgate dislocation and closing a floodgate not in place.
In order to solve the above technical problems, it is necessary to design a novel isolating switch having a large contact area, a good contact part adhesion, and an accurate closing action.
Disclosure of Invention
Aiming at the problems in the background technology, the invention provides a push-pull type outdoor isolating switch, which has the following structure: the push-pull type outdoor isolating switch consists of a support, an operating rod, a push head, a contact knife, an insulator, a first contact seat, a second contact seat and two spring contacts;
a rotary support is arranged on the left side of the upper end face of the support; the lower end of the operating rod is rotatably connected with the rotating support, and the upper part of the operating rod is provided with a pin shaft; the contact knife is a cylindrical structure body, the axial direction of the contact knife is parallel to the upper end face of the support, the left end of the contact knife is fixedly connected with the right side of the push head, a strip-shaped hole is formed in the left side of the push head, the axial direction of the strip-shaped hole is perpendicular to the upper end face of the support, and the pin shaft is clamped in the strip-shaped hole;
the insulator is of a Y-shaped structure, and a first connecting position and a second connecting position are respectively formed at two forked ends of the upper part of the Y-shaped structure; the lower end of the insulator is fixed on the upper end surface of the support, and the first connecting position is positioned between the rotary support and the second connecting position;
the first contact seat is arranged on the first connecting position, and the second contact seat is arranged on the second connecting position; the first contact seat is provided with a first through hole, the second contact seat is provided with a second through hole, and the first through hole and the second through hole are coaxial; the contact knife is sleeved in the first through hole, when the operating rod swings to the maximum stroke position rightwards, the right end of the contact knife is inserted into the second through hole, and when the operating rod swings to the maximum stroke position leftwards, the contact knife is separated from the second through hole;
a first terminal plate used for connecting a wire is arranged on the outer wall of the first contact seat; a second terminal board used for connecting a lead is arranged on the outer wall of the second contact seat; a first annular groove is formed in the first through hole, one spring contact is arranged in the first annular groove, a second annular groove is formed in the second through hole, the other spring contact is arranged in the second annular groove, and an inner hole of the spring contact is in tight fit with the outer diameter of the contact cutter.
The working principle of the invention is as follows: after the isolating switch is installed, two wires needing switch control are respectively connected to the first terminal board and the second terminal board; during closing operation, the operating rod pushes the contact knife to move rightwards (in an initial state, the contact knife is positioned at the position of the maximum leftward stroke and is only contacted with the first through hole and not contacted with the second through hole), so that the right end of the contact knife is inserted into the second through hole, and the two wires are electrically conducted through the contact knife; when the brake is switched off, the operating rod pulls the contact knife to move leftwards, so that the contact knife is separated from the second through hole, and the two wires are disconnected;
compared with the prior art, the invention has the following advantages: 1) the outer wall of the contact knife is contacted with the contact seat through a spring contact (the spring contact is in an annular ring shape), so that the contact area is large, and the current-carrying capacity is relatively high; 2) the switch action of the contact knife is used as linear reciprocating motion, and the contact knife is always sleeved in the first through hole, so that the action accuracy is better, the closing action can be effectively ensured to be accurate and in place, and the dislocation problem of the swing type contact knife can not occur; 3) the spring contact has certain elasticity, can be in good contact with the contact knife, and can effectively improve the heating problem caused by poor contact; 4) in the prior art, the supporting structures of the two insulators on the switch are both split structures, the two insulators and the supporting structures thereof are processed and assembled independently, and due to processing and assembling errors, the accuracy of the relative positions of the two insulators is low, so that the alignment of a knife switch and the insulators is poor and the resistance is large during switching-on.
On the basis of the scheme, the invention is further improved as follows: a plug is arranged in the second through hole and seals the right end of the second through hole; an arc contact is arranged on the left side surface of the plug; a receiving hole matched with the arc contact is formed in the right end face of the contact cutter; the arc contact and the receiving hole are made of ablation-resistant conductive materials. The right end of the second through hole can be sealed by the plug, rainwater and foreign matters can be prevented from entering the second through hole after the switch is switched on, and the arc contact and the receiving hole which are made of ablation-resistant conductive materials can improve the ablation-resistant performance of the corresponding part, so that the switch can be switched on and off under the condition of load. In order to save material and reduce weight, a through hole matched with the receiving hole can be arranged on the contact knife.
In addition, the following preferable scheme can be adopted by the operating rod: the operating rod consists of a push rod, an insulating rod and a connecting rod which are connected in sequence; the lower end of the connecting rod is rotatably connected with the rotary support; the pin shaft is arranged in the middle of the push rod. In the preferred scheme, the part of the operating rod which needs relative movement is designed into a metal piece in consideration of processing manufacturability and structural performance, and the middle part of the operating rod is insulated by an insulating rod.
For the convenience of remote operation, an operating ring can be arranged at the upper end of the operating rod. During operation, the operation rod can be operated by pulling the operation ring through tools such as hooks and the like, and the operation safety and the convenience can be effectively improved.
During specific implementation, in order to enable the contact knife to move smoothly, two elastic guide rings can be arranged in the first through hole and are respectively positioned on two sides of the spring contact, and meanwhile, the elastic guide rings also play a role in sealing the surrounding area of the spring contact and protecting the spring contact.
The beneficial technical effects of the invention are as follows: the scheme can effectively improve the current carrying capacity and the action accuracy of the isolating switch and can also improve the heating problem caused by poor contact.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2, a side view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
the names corresponding to the marks in the figure are as follows: the device comprises a support 1, an operating rod 2, a push rod 21, an insulating rod 22, a connecting rod 23, an operating ring 24, a push head 3, a contact knife 4, an insulator 5, a first contact seat 6, a first terminal plate 61, a second contact seat 7, a second terminal plate 71, a spring contact 8 and a plug 9.
Detailed Description
A push-pull outdoor isolating switch structurally comprises: the push-pull outdoor isolating switch consists of a support 1, an operating rod 2, a push head 3, a contact knife 4, an insulator 5, a first contact seat 6, a second contact seat 7 and two spring contacts 8;
a rotary support is arranged on the left side of the upper end surface of the support 1; the lower end of the operating rod 2 is rotatably connected with the rotating support, and the upper part of the operating rod 2 is provided with a pin shaft; the contact knife 4 is a cylindrical structure body, the axial direction of the contact knife 4 is parallel to the upper end face of the support 1, the left end of the contact knife 4 is fixedly connected with the right side of the push head 3, a strip-shaped hole is formed in the left side of the push head 3, the axial direction of the strip-shaped hole is perpendicular to the upper end face of the support 1, and the pin shaft is clamped in the strip-shaped hole;
the insulator 5 is of a Y-shaped structure, and a first connecting position and a second connecting position are respectively formed at two forked ends of the upper part of the Y-shaped structure; the lower end of the insulator 5 is fixed on the upper end surface of the support 1, and the first connecting position is positioned between the rotary support and the second connecting position;
the first contact seat 6 is arranged on the first connecting position, and the second contact seat 7 is arranged on the second connecting position; the first contact seat 6 is provided with a first through hole, the second contact seat 7 is provided with a second through hole, and the first through hole and the second through hole are coaxial; the contact knife 4 is sleeved in the first through hole, when the operating rod 2 swings rightwards to the maximum stroke position, the right end of the contact knife 4 is inserted into the second through hole, and when the operating rod 2 swings leftwards to the maximum stroke position, the contact knife 4 is separated from the second through hole;
a first terminal board 61 for connecting a wire is arranged on the outer wall of the first contact seat 6; a second terminal board 71 for connecting a lead is arranged on the outer wall of the second contact seat 7; a first annular groove is formed in the first through hole, one spring contact 8 is arranged in the first annular groove, a second annular groove is formed in the second through hole, the other spring contact 8 is arranged in the second annular groove, and an inner hole of the spring contact 8 is in tight fit with the outer diameter of the contact cutter 4.
Further, a plug 9 is arranged in the second through hole, and the right end of the second through hole is sealed by the plug 9; an arc contact is arranged on the left side surface of the plug 9; a receiving hole matched with the arc contact is formed in the right end face of the contact knife 4; the arc contact and the receiving hole are made of ablation-resistant conductive materials.
Further, the operating rod 2 is composed of a push rod 21, an insulating rod 22 and a connecting rod 23 which are connected in sequence; the lower end of the connecting rod 23 is rotatably connected with the rotary support; the pin is arranged in the middle of the push rod 21.
Further, an upper end of the operation lever 2 is provided with an operation ring 24.
Claims (4)
1. A push-pull outdoor isolating switch is characterized in that: the push-pull outdoor isolating switch consists of a support (1), an operating rod (2), a push head (3), a contact knife (4), an insulator (5), a first contact seat (6), a second contact seat (7) and two spring contacts (8);
a rotary support is arranged on the left side of the upper end surface of the support (1); the lower end of the operating rod (2) is rotatably connected with the rotating support, and the upper part of the operating rod (2) is provided with a pin shaft; the contact knife (4) is a cylindrical structure body, the axial direction of the contact knife (4) is parallel to the upper end face of the support (1), the left end of the contact knife (4) is fixedly connected with the right side of the push head (3), a strip-shaped hole is formed in the left side of the push head (3), the axial direction of the strip-shaped hole is perpendicular to the upper end face of the support (1), and the pin shaft is clamped in the strip-shaped hole;
the insulator (5) is of a Y-shaped structure, and a first connecting position and a second connecting position are respectively formed at two forked ends of the upper part of the Y-shaped structure; the lower end of the insulator (5) is fixed on the upper end surface of the support (1), and the first connecting position is positioned between the rotary support and the second connecting position;
the first contact seat (6) is arranged on the first connecting position, and the second contact seat (7) is arranged on the second connecting position; a first through hole is formed in the first contact seat (6), a second through hole is formed in the second contact seat (7), and the first through hole and the second through hole are coaxial; the contact knife (4) is sleeved in the first through hole, when the operating rod (2) swings rightwards to the maximum stroke position, the right end of the contact knife (4) is inserted into the second through hole, and when the operating rod (2) swings leftwards to the maximum stroke position, the contact knife (4) is separated from the second through hole;
a first terminal board (61) for connecting a wire is arranged on the outer wall of the first contact seat (6); a second terminal board (71) for connecting a lead is arranged on the outer wall of the second contact seat (7); a first annular groove is formed in the first through hole, one spring contact (8) is arranged in the first annular groove, a second annular groove is formed in the second through hole, the other spring contact (8) is arranged in the second annular groove, and the inner hole of the spring contact (8) is in tight fit with the outer diameter of the contact cutter (4).
2. A push-pull outdoor disconnector according to claim 1, characterized in that: a plug (9) is arranged in the second through hole, and the right end of the second through hole is sealed by the plug (9); an arc contact is arranged on the left side surface of the plug (9); a receiving hole matched with the arc contact is formed in the right end face of the contact knife (4); the arc contact and the receiving hole are made of ablation-resistant conductive materials.
3. A push-pull outdoor disconnector according to claim 1 or 2, characterized in that: the operating rod (2) consists of a push rod (21), an insulating rod (22) and a connecting rod (23) which are connected in sequence; the lower end of the connecting rod (23) is rotationally connected with the rotary support; the pin shaft is arranged in the middle of the push rod (21).
4. A push-pull outdoor disconnector according to claim 3, characterized in that: an operating ring (24) is arranged at the upper end of the operating rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110893998.2A CN113539732B (en) | 2021-08-05 | 2021-08-05 | Push-pull outdoor isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110893998.2A CN113539732B (en) | 2021-08-05 | 2021-08-05 | Push-pull outdoor isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113539732A true CN113539732A (en) | 2021-10-22 |
| CN113539732B CN113539732B (en) | 2022-07-29 |
Family
ID=78090491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110893998.2A Active CN113539732B (en) | 2021-08-05 | 2021-08-05 | Push-pull outdoor isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113539732B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1672659A2 (en) * | 2004-12-14 | 2006-06-21 | Elektrotechnische Werke Fritz Driescher & Söhne GmbH | Disconnecting switch with lineraly moving contact |
| CN2833857Y (en) * | 2005-11-11 | 2006-11-01 | 四川电器有限责任公司 | Single-phase electric isolating switch |
| CN203573889U (en) * | 2013-07-30 | 2014-04-30 | 登高电气有限公司 | Outdoor high-voltage large-current isolating switch |
| CN104599889A (en) * | 2015-01-12 | 2015-05-06 | 川开电气股份有限公司 | Indoor single-pole type electric disconnecting switch |
| WO2016012841A1 (en) * | 2014-07-25 | 2016-01-28 | Alstom Technology Ltd | Disconnector for electrical lines and systems with high current and high short-circuit value |
| CN110189954A (en) * | 2019-07-08 | 2019-08-30 | 许昌市威仕达电气有限公司 | Isolation earthing switch |
| CN110610832A (en) * | 2019-10-11 | 2019-12-24 | 北京中车赛德铁道电气科技有限公司 | Sliding high-voltage isolating switch |
| CN210866028U (en) * | 2019-12-20 | 2020-06-26 | 川铁电气（天津）股份有限公司 | Horizontal opening type outdoor direct-current three-station high-voltage isolating switch |
| CN112740348A (en) * | 2018-09-17 | 2021-04-30 | 迈科伊莱翠卡赛提飞卡股份公司 | Clamping group of switch with internal compact structure |
-
2021
- 2021-08-05 CN CN202110893998.2A patent/CN113539732B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1672659A2 (en) * | 2004-12-14 | 2006-06-21 | Elektrotechnische Werke Fritz Driescher & Söhne GmbH | Disconnecting switch with lineraly moving contact |
| CN1805093A (en) * | 2004-12-14 | 2006-07-19 | 弗里茨德雷希尔&佐讷电器工程装置有限公司 | Disconnecting switch with lineraly moving contact |
| CN2833857Y (en) * | 2005-11-11 | 2006-11-01 | 四川电器有限责任公司 | Single-phase electric isolating switch |
| CN203573889U (en) * | 2013-07-30 | 2014-04-30 | 登高电气有限公司 | Outdoor high-voltage large-current isolating switch |
| WO2016012841A1 (en) * | 2014-07-25 | 2016-01-28 | Alstom Technology Ltd | Disconnector for electrical lines and systems with high current and high short-circuit value |
| CN104599889A (en) * | 2015-01-12 | 2015-05-06 | 川开电气股份有限公司 | Indoor single-pole type electric disconnecting switch |
| CN112740348A (en) * | 2018-09-17 | 2021-04-30 | 迈科伊莱翠卡赛提飞卡股份公司 | Clamping group of switch with internal compact structure |
| CN110189954A (en) * | 2019-07-08 | 2019-08-30 | 许昌市威仕达电气有限公司 | Isolation earthing switch |
| CN110610832A (en) * | 2019-10-11 | 2019-12-24 | 北京中车赛德铁道电气科技有限公司 | Sliding high-voltage isolating switch |
| CN210866028U (en) * | 2019-12-20 | 2020-06-26 | 川铁电气（天津）股份有限公司 | Horizontal opening type outdoor direct-current three-station high-voltage isolating switch |
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| Publication number | Publication date |
|---|---|
| CN113539732B (en) | 2022-07-29 |
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