CN100594313C - Sealing transmitting means - Google Patents
Sealing transmitting means Download PDFInfo
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- CN100594313C CN100594313C CN200710045138A CN200710045138A CN100594313C CN 100594313 C CN100594313 C CN 100594313C CN 200710045138 A CN200710045138 A CN 200710045138A CN 200710045138 A CN200710045138 A CN 200710045138A CN 100594313 C CN100594313 C CN 100594313C
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- screw mandrel
- connecting rod
- ground connection
- rolling bearing
- touch base
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Abstract
The invention provides a sealed transmission device for gas insulated switch device. The invention solves the poor sealing performance problem of the transmission mechanism on one hand, and solves thelarge resistance problem during transmission process on the other hand. The sealed transmission device comprises a hollow grounding contact seat; a screw mandrel with one end equipped inside the lower seat body of the grounding contact seat and capable of rotating, wherein a moving contact is sheathed on the screw mandrel; and a connecting rod with one end equipped inside the upper seat body of the grounding contact seat and connected with the screw mandrel. The invention is characterized in that the top of the connecting rod inside the grounding contact seat is sheathed with a rolling bearing, and at least a sealing ring is provided below the rolling bearing. The inventive sealed transmission device adopts multiplex sealing ring structure with skeleton, so as to remarkably improve the sealing performance of the device and prevent various potential safety hazards due to air leakage. The force generated by the rotation of the screw mandrel is acted on the rolling bearing through the action of the retaining ring, and the rotation of the screw mandrel is changed to rolling friction, so as to improve the transmission efficiency of the screw mandrel and prevent the screw mandrel beingtwisted off during transmission process.
Description
Technical field
The present invention relates to the gas-insulated switchgear technical field, relate to a kind of sealed gearing device that is used for gas-insulated switchgear particularly.
Background technique
Gas-insulated switchgear is mainly used in the control and the protection of various electric pressure electric energy, and the following switching of certain rated current secondary electric substation, terminal temperature difference station in one's power is specially adapted to protect transformer and motor as the distribution and the protective gear of electric energy.Along with city net is built continuous development with urban network restructuring, the user has all proposed requirements at the higher level to the technical grade of product, novelty, non-maintaining, aspects such as price is low, easy to operate, Safety performance.Other general insulated switch are because drive part is unreliable, leak gas easily and cause that screw mandrel twists off in the transmission process, make the isolating switch transmission unreliable, cause the fault of switch short circuit, the reliability of influence power supply, accidents such as casualties.
In addition, according to the requirement of national grid, the inflation cabinet year leak rate less than 0.1%, as the rigid index of inflation cabinet, require the inflation cabinet necessarily to guarantee the tightness of switch when moving.In sum, an urgent demand must be perfect, improve the q﹠r of gas-insulated switch, because the size of isolating switch mechanism, the restriction of structure can only increase reliability and the tightness that a covering device guarantees transmission on the basis of original driving mechanism.Want to make the reliable necessary two-part structure that solves of former driving mechanism part, the one, the sealability of solution driving mechanism, the 2nd, the transmission efficiency that solves the resistance raising isolating switch in the mechanism driving process is avoided twisting off of isolating switch screw mandrel.
Fig. 1 solves the demand of former drive mechanism for sealing by an O type circle for a kind of, and O type circle mainly is used on the device of static seal, and for the device of frequent rotation and so not too suitable, must look for a kind of sealing configuration of suitable rotation so.
Chinese patent ZL01133957.8 provides a kind of transmission shaft seal, it has an internal axle sleeve that is contained in transmission shaft, this internal axle sleeve is imported in an external axle sleeve and has an inner diameter, its inner diameter is greater than the outer diameter of the transmission shaft of guiding, described internal axle sleeve has oil or grease duct at least, this pipeline has an outflow opening at least in the inner side edge zone of internal axle sleeve, it can be connected on transferring oil or the grease device, wherein internal axle sleeve has an inner groovy in the zone of the inner side surface of transmission shaft, radially dividing plate constitutes its border, pressure element of clamping at least in the city, district of inner groovy.But its complex structure is difficult for using on gas-insulated switch.
Summary of the invention
The purpose of this invention is to provide a kind of sealed gearing device that is used for gas-insulated switchgear, the sealability that solves driving mechanism on the one hand is not good, solve the big problem of resistance in the mechanism driving process on the other hand, avoid twisting off of isolating switch screw mandrel with the transmission efficiency that improves isolating switch.
Technical problem solved by the invention can realize by the following technical solutions;
A kind of sealed gearing device, the ground connection touch base that comprises a hollow, one end is arranged in the ground connection touch base lower base and rotating screw mandrel, be with moving contact on the screw mandrel, and the end connecting rod that is arranged in the ground connection touch base upper pedestal and links to each other with described screw mandrel, it is characterized in that: described ground connection touch base inside connecting rod top is with rolling bearing, and the rolling bearing below is provided with at least one seal ring.
Among the present invention, described rolling bearing is fixed on the connecting rod by the circlip that is arranged on ground connection touch base upper pedestal top, when therefore moving contact moves, screw mandrel rotates the power up and down that produces and acts on rolling bearing by back-up ring, the rotation of screw mandrel has just changed rolling friction into by original sliding friction, improve the transmission efficiency of screw mandrel, avoided screw mandrel twisting off in transmission process.
Described circlip comprises and is fixed on the circlip for shaft that acts on rolling bearing inner ring on the connecting rod and is close to the circlip for hole that ground connection touch base wall blocks housing washer.Circlip for shaft mainly is used on the axle, and circlip for hole mainly is used on the hole.When bearing was subjected to upwards power, circlip for hole blocked the outer ring of rolling bearing, and circlip for shaft acts on the inner ring of rolling bearing, just rolling bearing is fixed on the certain position, and rolling bearing plays rolling action when connecting rod rotates.
Among the present invention, described seal ring is rotation lip structure, has inner skeleton, its outer ring acts on the inwall of ground connection touch base and keeps motionless, there is rubber constituent the outer ring of seal ring, make the outer ring of seal ring good tightness be arranged with air chamber, the inner lane of seal ring is close to the connecting rod sealing, connecting rod is done rolling friction with the inner lane of seal ring, and seal ring inside has the spring of compensating action, make the inner lane of connecting rod and seal ring do and guarantee when rolling that the gas in the air chamber does not leak, thereby make the gas seal reliability of inflation cabinet improve.
In order to strengthen the reliability of sealing, described seal ring can be two, and adopting standard No. is the interior bag of the FB type backbone sealing ring of GB9877.1-88.
Among the present invention, the tail end of described connecting rod is provided with the screw mandrel attachment cap, and the screw mandrel head inserts in the described attachment cap, and the two connects by fixing pin, with co-rotation.
In order further to strengthen the seal of sealed gearing device of the present invention, described ground connection touch base lower base inside also is provided with seal ring below the screw mandrel head, the inwall of its outer ring effect ground connection touch base, and inner lane is close to screw mandrel and is sealed.
Described ground connection touch base lower base inside also is provided with a plurality of springs that are socketed on the screw mandrel and touches son.Spring touch the son play a part the connection major loop, when moving contact when the ground connection direction is moved, finished the interconnect function of moving contact and grounding contact.
Sealed gearing device of the present invention, adopt the multi-sealed coil structures of band skeleton, the sealing of device is greatly improved, meet the requirement of national grid, therefore avoid the various potential safety hazards that produce because of gas leakage fully, improved the job security of whole gas-insulated switchgear greatly; Screw mandrel rotates the power up and down that produces and acts on the rolling bearing by back-up ring, make the rotation of screw mandrel change rolling friction into by original sliding friction, not only improved the transmission efficiency of screw mandrel, and the generation of having avoided screw mandrel in transmission process, to twist off fully.
Description of drawings
Fig. 1 is a kind of existing structural representation that former drive mechanism is sealed by O type circle.
Fig. 2 is the view of sealed gearing device earthing position of the present invention.
Fig. 3 is the view of sealed gearing device separating brake of the present invention position.
Fig. 4 is the view of sealed gearing device closing position of the present invention.
Fig. 5 is the A-A sectional view of Fig. 3.
Fig. 6 is the enlarged diagram of Fig. 5 superstructure.
Fig. 7 is the mounting point schematic representation of circlip of the present invention.
The structural representation of Fig. 8 circlip for shaft of the present invention.
The structural representation of Fig. 9 circlip for hole of the present invention.
Figure 10 is a ring structure schematic representation of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Technical problem to be solved by this invention is not change under the prerequisite of original driving mechanism, and the sealability that solves driving mechanism is not good, the problem that the resistance in the transmission process is big.Address the above problem, at first must know the course of action of sealed gearing device of the present invention.
Fig. 2, Fig. 3, Fig. 4 have shown three kinds of different location statuss respectively, i.e. earthing position, separating brake position, closing position.Participate in Fig. 3, be in the separating brake position, screw mandrel 2 clockwise rotates screw mandrel 2 drive moving contacts 1 and moves upward, and moves to earthing position by the separating brake position, and moving contact 1 moves upward, and at this moment screw mandrel 2 is subjected to downward power; Screw mandrel 2 rotates counterclockwise screw mandrel 2 drive moving contacts 1 and moves downward, move to closing position by the separating brake position, moving contact 1 moves downward, at this moment screw mandrel 2 is subjected to power upwards, as seen screw mandrel 2 is to bear downwards and the power that makes progress in whole motion process, therefore makes that the transmission of screw mandrel 2 is sliding friction, the transmission efficiency of screw mandrel 2 is not high, and screw mandrel 2 is twisted off in transmission process easily.
Referring to Fig. 5, Fig. 6, sealed gearing device of the present invention, the ground connection touch base 3 that comprises a hollow, it is divided into lower base 31 and upper pedestal 32, lower base 31 is slightly larger than upper pedestal 32, and an end of drive lead screw 2 inserts in the ground connection touch base lower base 31 and can rotate therein, is with moving contact 1 on the screw mandrel 2, when moving contact 1 rotates at screw mandrel 2, can on screw mandrel 2, move up and down; Connecting rod 4 one ends insert in the ground connection touch base upper pedestal 32, and its tail end is provided with screw mandrel attachment cap 41, and screw mandrel head 21 inserts in the attachment cap 41, and the two connects by fixing pin 7, and then connecting rod 4 can rotate with screw mandrel 2 under the drive of screw mandrel 2 together.
Ground connection touch base upper pedestal 21 inside, connecting rod 4 tops are with rolling bearing 6, and rolling bearing 6 is fixed on the connecting rod 4 by circlip.Referring to Fig. 7, Fig. 8, Fig. 9, circlip is arranged on ground connection touch base upper pedestal 32 roofs 33, comprise circlip for shaft 11 and circlip for hole 5, circlip for shaft 11 is fixed on and acts on rolling bearing 6 inner rings on the connecting rod 4, and circlip for hole 5 is close to ground connection touch base upper pedestal 32 walls.When rolling bearing 6 was subjected to upwards power, circlip for hole 5 blocked the outer ring of rolling bearing, and circlip for shaft 11 acts on the inner ring of rolling bearing 6, just rolling bearing 6 is fixed on the certain position.Therefore, during moving contact 1 action, screw mandrel 2 rotates the power up and down that produces and acts on the rolling bearing 6 by back-up ring, and the rotation of screw mandrel 2 has just changed rolling friction into by original sliding friction, therefore improve the transmission efficiency of screw mandrel 2, avoided screw mandrel 2 in transmission process, to twist off.
Again referring to Fig. 5, Fig. 6, in order further to strengthen the seal of sealed gearing device of the present invention, ground connection touch base lower base 31 inside, below, screw mandrel head 21 ground also is provided with the seal ring (not shown), the inwall of its outer ring effect ground connection touch base lower base 31, inner lane is close to screw mandrel 2 and is sealed, ground connection touch base lower base 32 inside also are provided with a plurality of springs that are socketed on the screw mandrel 2 and touch son 9, to connect major loop, when moving contact 1 when the ground connection direction is moved, finished the interconnect function of moving contact 1 and grounding contact (signal).
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. sealed gearing device comprises the ground connection touch base of a hollow, and an end is arranged in the ground connection touch base lower base and rotating screw mandrel, is with moving contact on the screw mandrel, and an end is arranged in the ground connection touch base upper pedestal and the connecting rod that links to each other with described screw mandrel; The tail end of connecting rod is provided with the screw mandrel attachment cap, the screw mandrel head inserts in the described attachment cap, the two connects by fixing pin, it is characterized in that: described ground connection touch base inside connecting rod top is with rolling bearing, and rolling bearing is fixed on the connecting rod by the circlip that is arranged on ground connection touch base upper pedestal top; The rolling bearing below is provided with at least one seal ring, and seal ring has inner skeleton for rotation lip structure, and the outer ring of seal ring acts on the inwall of ground connection touch base and keeps motionless, and inner lane is close to connecting rod, and seal ring inside has counterbalance spring.
2. sealed gearing device as claimed in claim 1 is characterized in that: described circlip comprises and is fixed on the circlip for shaft that acts on rolling bearing inner ring on the connecting rod and is close to the circlip for hole that ground connection touch base wall blocks housing washer.
3. sealed gearing device as claimed in claim 1 is characterized in that: described seal ring is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710045138A CN100594313C (en) | 2007-08-22 | 2007-08-22 | Sealing transmitting means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710045138A CN100594313C (en) | 2007-08-22 | 2007-08-22 | Sealing transmitting means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105221A CN101105221A (en) | 2008-01-16 |
| CN100594313C true CN100594313C (en) | 2010-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710045138A Active CN100594313C (en) | 2007-08-22 | 2007-08-22 | Sealing transmitting means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100594313C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107150385A (en) * | 2017-06-28 | 2017-09-12 | 青岛红强伟业机械有限公司 | The pattern automatic positioning equipment of cut-to-size saw |
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- 2007-08-22 CN CN200710045138A patent/CN100594313C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101105221A (en) | 2008-01-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Binbin Inventor after: Zhang Jian Inventor after: Yang Wei Inventor after: Ke Yanguo Inventor after: Feng Ying Inventor after: Wang Liufang Inventor after: Zhu Taiyun Inventor after: Luo Sha Inventor after: Tang Jilong Inventor before: Tang Jilong |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180206 Address after: 230090 Ziyun Road, Hefei economic and Technological Development Zone, Hefei, Anhui Province Co-patentee after: Shanghai Tianling Switchgear Co., Ltd. Patentee after: Power Science Research Institute of Anhui Electric Power Co., Ltd. Address before: 201808 Shanghai, Jiading District Jia Road, No. 868 Patentee before: Shanghai Tianling Switchgear Co., Ltd. |
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| TR01 | Transfer of patent right |