CN202633192U - Mechanical linkage circuit breaker - Google Patents
Mechanical linkage circuit breaker Download PDFInfo
- Publication number
- CN202633192U CN202633192U CN 201220114032 CN201220114032U CN202633192U CN 202633192 U CN202633192 U CN 202633192U CN 201220114032 CN201220114032 CN 201220114032 CN 201220114032 U CN201220114032 U CN 201220114032U CN 202633192 U CN202633192 U CN 202633192U
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- CN
- China
- Prior art keywords
- installing hole
- connecting rod
- crossbeam
- circuit breaker
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a mechanical linkage circuit breaker, comprising a crossbeam. The crossbeam is provided with a link mechanism for driving the moving contact of the breaker body to move up and down; the link mechanism comprises three crank arms arranged on the crossbeam in a rotation manner and connecting rods respectively hinged to each crank arm; adjacent two crank arms and connecting rods between the two crank arms comprise a parallel four-link mechanism; each connecting rod possesses an end installing hole for the pin positioned at the end portion to penetrate and an intermediate installing hole for the pin positioned at the middle portion to penetrate; the end installing hole is a circular hole; and the intermediate installing hole is a long hole extended up and down. The pin is cooperated with the corresponding connecting rod through the long hole, with the structure of the long hole, even when an assembling tolerance is accumulated to a large value, and when an interelectrode pull bar is bended slightly, installation can be carried out reliably and conveniently, and simultaneously, the directions of active force of crank arms with pins and long holes are always parallel with the axes of the connection rods, and thereby the transmission efficiency of connecting rods is raised.
Description
Technical field
The utility model relates to a kind of tripolar mechanical linkage circuit breaker, belongs to the primary cut-out technical field.
Background technology
In the power transmission and transformation industry, circuit breaker plays a part very important as the key element of control and protection power transmission and transformation line to the safe and reliable operation of electric power system.Because power transmission and transformation line has adopted the three-phase voltage transmission of electricity, therefore produced three utmost point linked circuit breakers, promptly a product is made up of three relatively independent breaker bodies, and whenever each breaker body all has independently operating mechanism.In most cases, three breaker bodies can be received action command and synchronization action simultaneously, i.e. three utmost points interlock, and existing three utmost point interlock methods have three kinds: electric-linked, fluid pressure linkage and mechanical linkage.
Chinese patent CN201204167Y discloses a kind of tripolar mechanical linkage type primary cut-out; This circuit breaker comprise crossbeam, successively be installed at interval three breaker bodies on the crossbeam, be installed in linkage and operating mechanism in the crossbeam through the connecting lever box; The connecting rod of linkage be two of laterally arranging, connecting lever for and three of the corresponding one by one setting of breaker body; Each connecting lever rotates through rotating shaft respectively and is assemblied on the bracing frame of crossbeam; And the two ends of each connecting lever are respectively through bearing pin and two rod hinge connections, adjacent two connecting levers and the formation of shaft portion between the two parallel four-bar linkage.Be fixed with interior connecting lever in the rotating shaft of said each connecting lever respectively; The end of interior connecting lever is hinged with wins in succession; The end of winning in succession is hinged with the straight moving pull bar that vertically is slidedly assemblied in the breaker body, and each directly moving pull bar is in transmission connection with the moving contact of each self-corresponding breaker body respectively.Said operating mechanism comprises hydraulic cylinder; The piston-rod end of hydraulic cylinder is hinged with the main connecting lever that the rotating shaft with middle connecting lever is connected; During concrete work, the piston rod of hydraulic cylinder shrinks up and down and drives main connecting lever rotation, the rotating shaft rotation of connecting lever in the middle of main connecting lever drives; Move around thereby drive about two connecting rods, the straight moving pull bar of final drive moves up and down realizes synchronous separating brake of each breaker body or combined floodgate.This mechanical linkage circuit breaker receives structural limitations when assembling, exist Orthogonal Double to tolerance stack between connecting lever and the connecting rod; And the installing hole of the assembling of the supply and marketing axle on the connecting rod is the circular hole that coincide and cooperate with bearing pin; Can't install after causing bearing pin installing hole and the bearing pin fit tolerance accumulation on the connecting rod, the back distortion perhaps is installed, finally cause breaker body interpolar transmission efficiency low; Even clamping stagnation in transmission, occurs, and then make faults such as fractureing appears in connecting rod.
The utility model content
The purpose of the utility model provides a kind of mechanical linkage circuit breaker that can be convenient to connecting lever and connecting rod assembling, in order to solve the on business tired problem that can't install that causes of difference-product of bearing pin installing hole and bearing pin.
The utility model adopts following technical scheme: a kind of mechanical linkage circuit breaker; Comprise crossbeam; Crossbeam is provided with the linkage that the moving contact that is used to drive breaker body moves up and down; Said linkage comprise three rotations be assemblied on the crossbeam connecting lever and through bearing pin and all hinged connecting rod of each connecting lever, adjacent two connecting levers constitute parallel four-bar linkage with between the two shaft portion, said connecting rod has end installing hole that the bearing pin that supplies to be positioned at end position penetrates and confession and is positioned at the middle installing hole that the bearing pin in centre position penetrates; Said end installing hole is circular hole, and said middle installing hole is the slotted hole that extends along the vertical direction.
Said end installing hole is arranged on the connecting rod through the side connector that is arranged on the connecting rod two ends; Said end installing hole is separately positioned on each self-corresponding side connector; Installing hole is arranged on the connecting rod through the transition joint that is serially connected on the said connecting rod in the middle of said, and said middle installing hole is located in the transition joint of said connecting rod.
Said crossbeam is provided with auxiliary support apparatus, and said auxiliary support apparatus comprises the supporting seat that is fixed on the crossbeam, is provided with an end between supporting seat and the connecting rod and supporting seat is hinged, the auxiliary connecting lever of the other end and rod hinge connection.
Said auxiliary connecting lever is through being serially connected in auxiliary joint and the rod hinge connection on the connecting rod, and said auxiliary connecting lever and said auxiliary joint are hinged.
Adopt the mechanical linkage circuit breaker of said structure; Middle installing hole on the connecting rod of linkage is the slotted hole that vertically extends, and bearing pin cooperates installation through slotted hole with connecting rod, and this slotted hole structure can be under the big situation of build-up tolerance accumulation; Occur at the interpolar pull bar under the situation of less bending; Can both convenient and reliable install, the connecting lever band force direction parallel rod axis always of bearing pin and slotted hole simultaneously, so can improve the transmission efficiency of connecting rod.
In addition; On the connecting rod adapted auxiliary support apparatus, an end and rod hinge connection, the other end and the supporting seat of this auxiliary support apparatus are hinged, and supporting seat is fixed on the crossbeam; Increased the hinge quantity of connecting rod; Belong to a passive constraint, limited the vibration of connecting rod, improved the connecting rod reliability and stability.
Description of drawings
Fig. 1 is the linkage assembling sketch map of the utility model mechanical linkage circuit breaker;
Fig. 2 is the transition joint structural representation among Fig. 1;
Fig. 3 is the side connector structural representation among Fig. 1;
Fig. 4 is an I portion enlarged diagram among Fig. 1.
Embodiment
The embodiment of a kind of mechanical linkage circuit breaker of the utility model; Shown in Fig. 1-4, comprise crossbeam 1 and be located at the linkage on the crossbeam 1 that three breaker bodies that linkage is used to drive on the crossbeam 1 are realized synchronous separating brake or combined floodgate.Said linkage comprises the connecting lever 2 that is slidedly assemblied in connecting rod 3 and three and the corresponding one by one setting of each breaker body on the crossbeam 1 along left and right directions, and an end of said each connecting lever 2 all rotates through rotating shaft and is assemblied on the bracing frame 8 of crossbeam 1.The centre position of said connecting rod 3 fixedly is serially connected with transition joint 5 through locking nut; The end of a connecting lever corresponding with transition joint 5 is hinged through bearing pin and transition joint 5; And the installing hole that the supply and marketing axle penetrates in the transition joint 5 is middle installing hole, and middle installing hole is the slotted hole that extends along the vertical direction; The two ends of connecting rod 3 are fixed with side connector 7 through locking nut; The end of other two connecting levers corresponding with two side connectors, 7 difference is all hinged through bearing pin and side connector 7; The installing hole that supply and marketing axle on the side connector penetrates is the end installing hole, and the end installing hole is circular hole.
Fixedly be serially connected with auxiliary joint 9 through locking nut respectively on the shaft portion between said transition joint 5 and two side connectors 7; Be respectively equipped with auxiliary support apparatus on two auxiliary joints 9; Said auxiliary support apparatus comprises the supporting seat 6 that is fixed on the crossbeam 1, the auxiliary connecting lever 4 of be provided with between supporting seat 6 and the auxiliary joint that an end and supporting seat are 6 hinged, the other end and auxiliary joint 9 are hinged.
In the foregoing description; Be serially connected with transition joint 5 and side connector 7 on the said connecting rod 3; Installing hole is located in the transition joint 7 in the middle of said, and said end installing hole is located on the side connector 5, in other embodiments; Also transition joint and side connector can be set, middle installing hole and end installing hole can be directly arranged on the connecting rod.
Claims (4)
1. mechanical linkage circuit breaker; Comprise crossbeam; Crossbeam is provided with the linkage that the moving contact that is used to drive breaker body moves up and down; Said linkage comprise three rotations be assemblied on the crossbeam connecting lever and through bearing pin and all hinged connecting rod of each connecting lever, adjacent two connecting levers constitute parallel four-bar linkage with between the two shaft portion, said connecting rod has end installing hole that the bearing pin that supplies to be positioned at end position penetrates and confession and is positioned at the middle installing hole that the bearing pin in centre position penetrates; It is characterized in that: said end installing hole is circular hole, and said middle installing hole is the slotted hole that extends along the vertical direction.
2. mechanical linkage circuit breaker according to claim 1; It is characterized in that: said end installing hole is arranged on the connecting rod through the side connector that is arranged on the connecting rod two ends; Said end installing hole is separately positioned on each self-corresponding side connector; Installing hole is arranged on the connecting rod through the transition joint that is serially connected on the said connecting rod in the middle of said, and said middle installing hole is located in the transition joint of said connecting rod.
3. mechanical linkage circuit breaker according to claim 1 and 2; It is characterized in that: said crossbeam is provided with auxiliary support apparatus; Said auxiliary support apparatus comprises the supporting seat that is fixed on the crossbeam, is provided with an end between supporting seat and the connecting rod and supporting seat is hinged, the auxiliary connecting lever of the other end and rod hinge connection.
4. mechanical linkage circuit breaker according to claim 3 is characterized in that: said auxiliary connecting lever is through being serially connected in auxiliary joint and the rod hinge connection on the connecting rod, and said auxiliary connecting lever and said auxiliary joint are hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220114032 CN202633192U (en) | 2012-03-23 | 2012-03-23 | Mechanical linkage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220114032 CN202633192U (en) | 2012-03-23 | 2012-03-23 | Mechanical linkage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202633192U true CN202633192U (en) | 2012-12-26 |
Family
ID=47386353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220114032 Expired - Lifetime CN202633192U (en) | 2012-03-23 | 2012-03-23 | Mechanical linkage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202633192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882338B (en) * | 2014-02-27 | 2017-07-07 | 西门子公司 | Mechanical linkage circuit breaker |
-
2012
- 2012-03-23 CN CN 201220114032 patent/CN202633192U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882338B (en) * | 2014-02-27 | 2017-07-07 | 西门子公司 | Mechanical linkage circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |