CN203607314U - Over-position protection device for direct-acting three-position isolating switch - Google Patents
Over-position protection device for direct-acting three-position isolating switch Download PDFInfo
- Publication number
- CN203607314U CN203607314U CN201320794645.8U CN201320794645U CN203607314U CN 203607314 U CN203607314 U CN 203607314U CN 201320794645 U CN201320794645 U CN 201320794645U CN 203607314 U CN203607314 U CN 203607314U
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- screw
- leading screw
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- fixed contact
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- 230000001681 protective effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model relates to power transmission and distribution equipment, and particularly relates to an over-position protection device for a direct-acting three-position isolating switch. The over-position protection device is characterized in that an electric operating mechanism and a screw mechanism driven by the electric operating mechanism are installed on a frame; a screw shaft end part of the screw mechanism drives an auxiliary screw through a gear transmission mechanism; the auxiliary screw is provided with a direct-acting nut in a matched mode, and one side of the direct-acting nut is provided with a limiting rod; the outer side of the frame is further provided with an outer support, the outer support is provided with a guide slot parallel to the auxiliary screw, and the limiting rod is inserted in the guide slot and restricted by the guide slot to only move back and forth but not rotate; each of the front limiting position and the rear lighting position of the limiting rod is provided with a travel switch capable of being touched by a moving rod, and the travel switch is connected to a control circuit of the electric operating mechanism. The over-position protection device provided by the utility model is simple in structure and convenient to manufacture and install, and the rotating stroke of the screw is limited through the travel switch, thereby effectively preventing over-position of actions of a moving contact, and improving the operational reliability of the switch.
Description
Technical field
The utility model relates to equipment for power transmission and distribution, and specifically a kind of straight moving tri-station isolating switch is crossed a protective device.
Background technology
Direct-acting three-working-position isolation in existing equipment for power transmission and distribution generally includes and is arranged on the screw mechanism driving on framework and by motor operation mechanism, framework inner side is provided with the front fixed contact being coaxially arranged in order with leading screw, middle fixed contact and rear fixed contact, screw mechanism can drive a moving contact to move axially between each fixed contact, realizes combined floodgate, separating brake and three stations of ground connection.When motor-operating mechanism real work, if the sensor failure of control section, after moving contact puts in place, leading screw can not stop operating, the moving contact motion position that will overstep the extreme limit, and leading screw there will be stuck phenomenon, fracture damage, thereby functional reliability is poor.
Summary of the invention
Technical problem to be solved in the utility model is, provides one can prevent that direct-acting three-working-position isolation moving contact from moving position, improves the straight moving tri-station isolating switch of functional reliability and cross a protective device.
Straight moving tri-station isolating switch of the present utility model is crossed a protective device and is included framework, motor-operating mechanism and the screw mechanism by its driving are installed on framework, framework inner side is provided with the front fixed contact being coaxially arranged in order with leading screw, middle fixed contact and rear fixed contact, screw mechanism can drive a moving contact to move axially between each fixed contact, realizes combined floodgate, separating brake and three stations of ground connection; The lead screw shaft end of described screw mechanism is stretched out framework outside and is driven an auxiliary leading screw parallel with lead screw shaft by gear drive; On described auxiliary leading screw, coordinate a straight moving nut is installed, directly a side of moving nut is connected with one section of gag lever post; Described framework outside is also provided with a support arm, is provided with the gathering sill parallel with auxiliary leading screw on support arm, and described gag lever post is inserted in gathering sill and limits it by gathering sill and only can move forward and backward and can not rotate; The forward and backward extreme position that described gag lever post moves is respectively arranged with the travel switch that can be touched by carriage release lever, and described travel switch is connected in the control circuit of motor-operating mechanism.
Described support arm comprises the front apron that at least one side plate parallel with auxiliary leading screw is vertical with auxiliary leading screw with, and described gathering sill is opened on side plate, and the two ends of described auxiliary leading screw are arranged on respectively on framework and front apron.
The utility model is simple in structure, manufacture and easy for installation, and it carries out spacing to the rotating distance of leading screw by travel switch, effectively prevented that the action of moving contact from crossing position, has improved the operational reliability of switch.
Accompanying drawing explanation
Fig. 1 is the perspective view of a viewing angle of this practical embodiment;
Fig. 2 is the perspective view of another viewing angle of the utility model embodiment;
Fig. 3 is structural representation after the utility model embodiment support arm is removed.
Embodiment
As shown in the figure, this directly moving tri-station isolating switch cross a protective device and include framework 1, motor-operating mechanism 2 and the screw mechanism 3 by its driving are installed on framework, framework inner side is provided with the front fixed contact 4, middle fixed contact 5 and the rear fixed contact 6 that are coaxially arranged in order with leading screw, screw mechanism can drive a moving contact 7 to move axially between each fixed contact, realizes combined floodgate, separating brake and three stations of ground connection; The lead screw shaft end of described screw mechanism 3 is stretched out framework outside and is driven an auxiliary leading screw 9 parallel with lead screw shaft by gear drive 8; On described auxiliary leading screw 9, coordinate a straight moving nut 10 is installed, directly a side of moving nut is connected with one section of gag lever post 11; Described framework 1 outside is also provided with a support arm 12, is provided with the gathering sill 13 parallel with auxiliary leading screw 9 on support arm, and described gag lever post 11 is inserted in gathering sill 13 and limits it by gathering sill and only can move forward and backward and can not rotate; The forward and backward extreme position that described gag lever post 11 moves is respectively arranged with the travel switch 14 that can be touched by carriage release lever, and described travel switch 14 is connected in the control circuit of motor-operating mechanism.Described support arm 12 comprises the front apron 16 that at least one side plate parallel with auxiliary leading screw 15 is vertical with auxiliary leading screw with, and described gathering sill 13 is opened on side plate 15, and the two ends of described auxiliary leading screw 9 are arranged on respectively on framework 1 and front apron 16.
Claims (2)
1. a straight moving tri-station isolating switch is crossed a protective device, include framework (1), motor-operating mechanism (2) and the screw mechanism (3) by its driving are installed on framework, framework inner side is provided with the front fixed contact (4) being coaxially arranged in order with leading screw, middle fixed contact (5) and rear fixed contact (6), screw mechanism can drive a moving contact (7) to move axially between each fixed contact, realizes combined floodgate, separating brake and three stations of ground connection; It is characterized in that: the lead screw shaft end of described screw mechanism (3) is stretched out framework outside and driven an auxiliary leading screw (9) parallel with lead screw shaft by gear drive (8); Upper cooperation of described auxiliary leading screw (9) is provided with a straight moving nut (10), and directly a side of moving nut is connected with one section of gag lever post (11); Described framework (1) outside is also provided with a support arm (12), on support arm, be provided with the gathering sill (13) parallel with auxiliary leading screw (9), described gag lever post (11) is inserted in gathering sill (13) and limits it by gathering sill and only can move forward and backward and can not rotate; The mobile forward and backward extreme position of described gag lever post (11) is respectively arranged with the travel switch (14) that can be touched by carriage release lever, and described travel switch 14 is connected in the control circuit of motor-operating mechanism.
2. straight moving tri-station isolating switch according to claim 1 is crossed a protective device; it is characterized in that: described support arm (12) comprises the front apron that at least one side plate parallel with auxiliary leading screw (15) is vertical with auxiliary leading screw with (16); described gathering sill (13) is opened at side plate (15) upper, and the two ends of described auxiliary leading screw (9) are arranged on respectively on framework (1) and front apron (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794645.8U CN203607314U (en) | 2013-12-06 | 2013-12-06 | Over-position protection device for direct-acting three-position isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794645.8U CN203607314U (en) | 2013-12-06 | 2013-12-06 | Over-position protection device for direct-acting three-position isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607314U true CN203607314U (en) | 2014-05-21 |
Family
ID=50719978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320794645.8U Expired - Fee Related CN203607314U (en) | 2013-12-06 | 2013-12-06 | Over-position protection device for direct-acting three-position isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203607314U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700534A (en) * | 2013-12-06 | 2014-04-02 | 江苏大全长江电器股份有限公司 | Transitional motion three-position isolating switch over-position protection device |
| CN108461321A (en) * | 2018-03-27 | 2018-08-28 | 国网山东省电力公司郓城县供电公司 | A kind of dual power supply switching protection |
| CN109727807A (en) * | 2018-12-14 | 2019-05-07 | 北京双杰电气股份有限公司 | Dry air type disconnecting switch |
-
2013
- 2013-12-06 CN CN201320794645.8U patent/CN203607314U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700534A (en) * | 2013-12-06 | 2014-04-02 | 江苏大全长江电器股份有限公司 | Transitional motion three-position isolating switch over-position protection device |
| CN108461321A (en) * | 2018-03-27 | 2018-08-28 | 国网山东省电力公司郓城县供电公司 | A kind of dual power supply switching protection |
| CN108461321B (en) * | 2018-03-27 | 2020-10-02 | 国网山东省电力公司郓城县供电公司 | Dual-power switching protection device |
| CN109727807A (en) * | 2018-12-14 | 2019-05-07 | 北京双杰电气股份有限公司 | Dry air type disconnecting switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |