CN102005329B - Connection structure of tension spring type balance spring of double-arm folding type high-voltage alternating current isolating switch - Google Patents
Connection structure of tension spring type balance spring of double-arm folding type high-voltage alternating current isolating switch Download PDFInfo
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- CN102005329B CN102005329B CN 201010515546 CN201010515546A CN102005329B CN 102005329 B CN102005329 B CN 102005329B CN 201010515546 CN201010515546 CN 201010515546 CN 201010515546 A CN201010515546 A CN 201010515546A CN 102005329 B CN102005329 B CN 102005329B
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Abstract
The invention relates to a connection structure of a tension spring type balance spring of a double-arm folding type high-voltage alternating current isolating switch. The connection structure comprises a crank arm, a tension spring, an adjusting joint, an adjusting screw rod and the like, wherein the adjusting joint is an 'n'-shaped frame; the opening end of the adjusting joint is hinged with the crank arm through an axle pin; a through hole for the rod part of the adjusting screw rod to pass through is formed at the other end, opposite to the opening end, of the adjusting joint; the head part of the adjusting screw rod is positioned in the 'n'-shaped frame; an axial gap is reserved between the head part of the adjusting screw rod and the adjusting joint; the rod part of the adjusting screw rod extends out of the through hole of the adjusting joint to be spirally connected with the tension spring; and the other end of the tension spring is hinged with a fixed support. The connection structure effectively avoids the rebound phenomenon in the on/off process of a main knife switch, balances the applied force of the tension spring and is stretched stably. The connection structure has the characteristics of reasonable structure, good balance effect of the tension spring, stable action, high reliability and the like.
Description
Technical field
The present invention relates to a kind of syndeton of Extension Spring-type balancing spring of Double-arm folding type high-voltage alternating current isolating switch.
Background technology
High voltage isolator is to be used for deciliter voltage being arranged and the power equipment of zero load circuit in the electric power system, in circuit, play buffer action, can utilize high voltage isolator to form obvious cut-off point during maintenance between quilt maintenance equipment and charging equipment, the personnel of assurance carry out safety operation and safety inspection; Under closure state, can also can bear short-circuit current by running current reliably again, in addition, high voltage isolator cooperates the load operation mode that can also change electrical network with switch, high voltage isolator is used very extensive in electric power system, it is all larger on the impact of design, foundation and the safe operation of electric substation, power plant, therefore requires higher to its functional reliability.Wherein to have a drive mechanism simple for the Double-arm folding type high-voltage alternating current isolating switch, floor space is less, the operation characteristics such as strength is large during divide-shut brake, operation conditions is better than the single arm type high voltage isolator under the environmental conditions such as sleet, freezing, dust storm, is adapted at northern area and uses.But present Double-arm folding type high voltage isolator is in operation and finds when divide-shut brake moves, because contact tube is the effect that folding arm is subjected to Extension Spring-type balancing spring and transmission mechanism, large, the speed of its operation strength, add again the gravitational moment of folding arm self, particularly main switch cutter separating brake or feed motion moment of just having finished, folding arm is prone to a bounce-back action, and this bounce-back action can cause occurring the arcing phenomenon, thereby burn dynamic and static contact, affect the normal operation of equipment; In addition, connecting lever on the folding arm directly is connected with extension spring, during the divide-shut brake action, connecting lever is for rotatablely moving, connecting lever direct pull extension spring, the active force of extension spring be not for straight line stressed, operating physical force is large, the poor stability of action, and affect the anti-fatigue life of extension spring, cause isolating switch to break down thereby the inefficacy of Extension Spring-type balancing spring can occur.
Summary of the invention
In order to overcome defects, the invention provides a kind of rational in infrastructure, having stable behavior, the extension spring good balance effect is effectively avoided the syndeton of Extension Spring-type balancing spring of the Double-arm folding type high-voltage alternating current isolating switch of main switch cutter divide-shut brake rebound phenomena.
The technical solution used in the present invention is: a kind of syndeton of Extension Spring-type balancing spring of Double-arm folding type high-voltage alternating current isolating switch, comprise connecting lever and extension spring, also comprise pivot pin, regulate joint and adjusting screw(rod), described adjusting joint is " ∏ " shape framework, pivot pin is horizontally through the openend of " ∏ " shape framework, regulating joint is articulated and connected by pivot pin and connecting lever, be provided with the through hole that can pass for the bar section of adjusting screw(rod) regulating that relative end of joint " ∏ " shape frame openings end, the head of adjusting screw(rod) is positioned at " ∏ " shape framework and with the adjusting joint end play is arranged, and the bar section of adjusting screw(rod) stretches out in the through hole of regulating joint; Described extension spring two ends are provided with front connector and rear joint, front connector one side is fixedly connected with extension spring, opposite side is provided with the nut that can cooperate with adjusting screw(rod), and be threaded with the bar section of adjusting screw(rod) by this nut, rear joint one side is fixedly connected with extension spring, and opposite side and hold-down support are articulated and connected.
The present invention is provided with the adjusting screw(rod) of regulating joint between the connecting lever of folding arm and extension spring, owing between adjusting screw(rod) and the adjusting joint end play is arranged, when connecting lever initially rotates pulling adjusting joint like this, regulate joint relatively and adjusting screw(rod) have a bit of hollow travel stage, again because extension spring has certain initial tension when initial motion, this moment, initial tension just was equilibrated at the gravitational moment of main switch cutter, and the end play between adjusting screw(rod) and the adjusting joint, lifting force to the action of main switch cutter divide-shut brake also plays good cushioning effect, thereby efficiently solve the main switch cutter divide-shut brake rebound phenomena of moment, avoid burning moving because of the arcing phenomenon, fixed contact has improved stability and the reliability of equipment; In addition, connecting lever is provided with end play with adjusting screw(rod) with the adjusting joint again for being articulated and connected, regulating joint, therefore extension spring is straight linear at whole loading process active force substantially, the active force of extension spring is steady, balanced, it is stable to stretch, thereby guaranteed synchronism and the synchronism of main switch cutter, and the breaking-closing operating power of main switch cutter is light, stable.
Description of drawings
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is the upward view of Fig. 1.
Embodiment
Now the invention will be further described by reference to the accompanying drawings, Fig. 1 is a kind of embodiment of the present invention, mainly comprise connecting lever 1, pivot pin 2, regulate joint 3, adjusting screw(rod) 4 and extension spring 5, described adjusting joint 3 is " ∏ " shape framework, the openend of regulating joint 3 " ∏ " shape framework is articulated and connected by pivot pin 2 and connecting lever 1, the end of connecting lever 1 is provided with connecting hole and extend into the openend of regulating joint 3 " ∏ " shape framework inner in the present embodiment, two sidewalls of openend also are provided with connecting hole, pivot pin 2 is horizontally through the connecting hole of two sidewalls of the openend of connecting lever 1 and " ∏ " shape framework, two sidewalls are stretched out respectively at the two ends of pivot pin 2, and are fixed by split pin 6 at both ends.Be provided with the through hole that can pass for the bar section of adjusting screw(rod) 4 regulating that relative end of joint 3 " ∏ " shape frame openings end.Adjusting screw(rod) 4 is common general screw, its head radial dimension is greater than the radial dimension of bar section, the head of adjusting screw(rod) 4 is positioned at " ∏ " shape framework and with adjusting joint 3 end play is arranged, the bar section of adjusting screw(rod) 4 stretches out in the through hole of regulating joint 3, and the head of adjusting screw(rod) 4 can move axially in " ∏ " shape framework of regulating joint 3.Described extension spring 5 two ends are provided with front connector 8 and rear joint 9, and front connector 8 one sides are fixedly connected with extension spring 5, and opposite side is provided with the nut 7 that can cooperate with adjusting screw(rod) 4, and are threaded with the bar section of adjusting screw(rod) 4 by this nut 7; Rear joint 9 one sides are fixedly connected with extension spring 5, and opposite side is articulated and connected by a pivot pin and hold-down support 10.
Now take the action of main switch cutter separating brake as embodiment, the course of work of the present invention is described, the starting stage of main switch cutter separating brake, transmission mechanism drives connecting lever 1 and rotates, thereby joint 3 motions are regulated in pulling, because gapped between adjusting screw(rod) 4 and the adjusting joint 3, namely regulate one section hollow travel stage is arranged between joint 3 and the adjusting screw(rod) 4, regulate joint 3 and can not spur adjusting screw(rod) 4 and move this moment, and extension spring 5 does not stress yet, and this stage is the hollow travel stage of extension spring 5.When connecting lever 1 is rotated further, regulate joint 3 and adjusting screw(rod) 4 joints, regulate 4 motions of joint 3 pulling adjusting screw(rod)s, thus adjusting screw(rod) 4 with force transmission to extension spring 5, drive extension spring 5 and begin to do extensional motion, this stage is the effect stage of extension spring 5.Extension spring 5 has just begun to do the time spent, has certain initial tension, and this moment, initial tension just was equilibrated at the gravitational moment of main switch cutter.In the whole drawing process of extension spring 5, the gravitational moment of the strength of spring and each separating brake angle of main switch cutter is substantially identical, thereby reaches good counterbalance effect.The hollow travel stage of regulating among the present invention between joint 3 and the adjusting screw(rod) 4 still plays good cushioning effect to the lifting force of main switch cutter divide-shut brake action, thereby efficiently solve the main switch cutter divide-shut brake rebound phenomena of moment, avoid having improved stability and the reliability of equipment because of the arcing phenomenon dynamic and static contact of burning.Connecting lever 1 is provided with end play with adjusting screw(rod) 4 with adjusting joint 3 again for being articulated and connected, regulating joint 3 among the present invention, therefore extension spring 5 is in the whole effect stage, its active force is straight linear substantially, the active force of extension spring 5 is steady, balanced, it is stable to stretch, thereby guaranteed synchronism and the synchronism of main switch cutter, and the breaking-closing operating power of main switch cutter is light, stable.Principle and effect during with separating brake is identical with effect for the principle that prevents folding arm bounce-back in the main switch cutter feed motion of the present invention.
The present invention effectively avoids main switch cutter divide-shut brake rebound phenomena, makes the extension spring active force balanced, and it is stable to stretch, have rational in infrastructure, extension spring good balance effect, having stable behavior, reliability high.
Claims (1)
1. the syndeton of the Extension Spring-type balancing spring of a Double-arm folding type high-voltage alternating current isolating switch, comprise connecting lever and extension spring, it is characterized in that: also comprise pivot pin, regulate joint and adjusting screw(rod), described adjusting joint is " ∏ " shape framework, pivot pin is horizontally through the openend of " ∏ " shape framework, regulating joint is articulated and connected by pivot pin and connecting lever, be provided with the through hole that can pass for the bar section of adjusting screw(rod) regulating that relative end of joint " ∏ " shape frame openings end, the head of adjusting screw(rod) is positioned at " ∏ " shape framework and with the adjusting joint end play is arranged, and the bar section of adjusting screw(rod) stretches out in the through hole of regulating joint; Described extension spring two ends are provided with front connector and rear joint, front connector one side is fixedly connected with extension spring, opposite side is provided with the nut that can cooperate with adjusting screw(rod), and be threaded with the bar section of adjusting screw(rod) by this nut, rear joint one side is fixedly connected with extension spring, and opposite side and hold-down support are articulated and connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010515546 CN102005329B (en) | 2010-10-15 | 2010-10-15 | Connection structure of tension spring type balance spring of double-arm folding type high-voltage alternating current isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010515546 CN102005329B (en) | 2010-10-15 | 2010-10-15 | Connection structure of tension spring type balance spring of double-arm folding type high-voltage alternating current isolating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102005329A CN102005329A (en) | 2011-04-06 |
| CN102005329B true CN102005329B (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010515546 Expired - Fee Related CN102005329B (en) | 2010-10-15 | 2010-10-15 | Connection structure of tension spring type balance spring of double-arm folding type high-voltage alternating current isolating switch |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243935B (en) * | 2011-05-03 | 2014-01-22 | 湖北工业大学 | Tension spring isolating switch of surge generator charging resistor |
| CN106816346A (en) * | 2017-02-10 | 2017-06-09 | 平高集团有限公司 | The excess of stroke adjusts joint and the high-speed switch using the joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3772489A (en) * | 1972-07-17 | 1973-11-13 | Ite Imperial Corp | Racking safety disconnect switch for vacuum circuit breakers |
| CN1030844A (en) * | 1987-07-10 | 1989-02-01 | 株式会社日立制作所 | Switch operation device |
| CN201007968Y (en) * | 2007-02-15 | 2008-01-16 | 冯保明 | Universal operation mechanism for load switch |
| CN201886950U (en) * | 2010-10-15 | 2011-06-29 | 山东泰开隔离开关有限公司 | Connection structure of tension spring type balancing spring of double-arm folding high voltage alternating current isolating switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0494023A (en) * | 1990-08-10 | 1992-03-26 | Mitsubishi Electric Corp | Disconnecting switch operating mechanism |
-
2010
- 2010-10-15 CN CN 201010515546 patent/CN102005329B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3772489A (en) * | 1972-07-17 | 1973-11-13 | Ite Imperial Corp | Racking safety disconnect switch for vacuum circuit breakers |
| CN1030844A (en) * | 1987-07-10 | 1989-02-01 | 株式会社日立制作所 | Switch operation device |
| CN201007968Y (en) * | 2007-02-15 | 2008-01-16 | 冯保明 | Universal operation mechanism for load switch |
| CN201886950U (en) * | 2010-10-15 | 2011-06-29 | 山东泰开隔离开关有限公司 | Connection structure of tension spring type balancing spring of double-arm folding high voltage alternating current isolating switch |
Non-Patent Citations (1)
| Title |
|---|
| JP平4-94023A 1992.03.26 |
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| CN102005329A (en) | 2011-04-06 |
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