CN202183325U - Large current disconnecting switch contact knife clamping device for rail transit - Google Patents
Large current disconnecting switch contact knife clamping device for rail transit Download PDFInfo
- Publication number
- CN202183325U CN202183325U CN2011202954815U CN201120295481U CN202183325U CN 202183325 U CN202183325 U CN 202183325U CN 2011202954815 U CN2011202954815 U CN 2011202954815U CN 201120295481 U CN201120295481 U CN 201120295481U CN 202183325 U CN202183325 U CN 202183325U
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- China
- Prior art keywords
- contact knife
- clamping device
- static contact
- contact seat
- seat
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- 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 - Fee Related
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Abstract
The utility model discloses a large current disconnecting switch contact knife clamping device for rail transit, which comprises an upper static contact seat (1), a lower static contact seat (11) and two dynamic contact knife plates (5) which are connected together, wherein the upper static contact seat and the lower static contact seat are connected and clamped through the clamping device. The clamping device comprises a pulling rod assembly, a supporting assembly and a pressing assembly. One end of the pulling rod assembly is connected to a bottom frame (14) of a disconnecting switch, and the other end of the pulling rod assembly is connected to the supporting assembly. The supporting assembly is connected between the two dynamic contact knife plates (5) and located in the middle portion of the length direction. One end of the pressing assembly is connected to the ends of the dynamic contact knife plates (5), and the other ends of the dynamic contact knife plates are connected to the supporting assembly. By utilizing the lever principle, the other end of a pressing plate is pressed towards the inner sides of the dynamic contact knife plates and presses the upper static contact seat and the lower static contact seat tightly so as to achieve the switch-on state. Therefore, over-abrasion caused by the fact that a spring is adopted for pre-pressing between the dynamic contact knife plates and the static contact seats in the prior art is avoided, operating force is reduced, and service life is prolonged.
Description
Technical field
The utility model relates to the technical field of urban track traffic, specifically is a kind of heavy current disconnecting switches contact knife clamping device that is used for track traffic that is applicable to connecting and disconnecting of the circuit when control has voltage non-loaded in the orbit traffic direct current 1500V conductor rail circuit.
Background technology
At present; Urban track traffic (such as subway) is normally used to be that the tractive power supply system of direct current 1500V cuts off with closure the non-loaded uniline of voltage is arranged, and two kinds of standards commonly used in this track traffic tractive power supply system are respectively flexible overhead contact line standard and conductor rail standard.The contact line standard is built on stilts layout, and the space can be more in disorder, and there is certain potential safety hazard in outdoor installation; And advanced be the conductor rail standard; It is on the ground with the track limit of the vehicle movement power track that adds protective cover that is arranged in parallel; And the control apparatus isolating switch of this conductor rail also must and be made the cabinet form in floor mounted, so that operation and guarantee safety.As the main element in the isolating switch cabinet, heavy current disconnecting switches, the clamping device between its static contact seat and the movable touch knife is extremely important; What the clamping device of prior art adopted usually is the structure of spring; It comprises static contact seat, movable touch knife, following static contact seat, and movable touch knife is made up of two movable contact knife plates, and an end of two movable contact knife plates is hinged with following static contact seat; The other end connects through spring, nut, screw rod, and with last static contact seat clamping.During combined floodgate, two movable touch knife integrated circuit boards are connected on the static contact seat, are compressed by spring force; During disconnection, two movable contact knife plates directly will locating are pulled out from last static contact seat and are got final product.
But the shortcoming below the clamping device of this structure exists: owing to when closing a floodgate, compress with the spring preload pressure between two movable contact knife plates and the last static contact seat, when needs broke off, the slip between two movable contact knife plates and the last static contact seat can produce frictional force; Like this, on the one hand, operating physical force spent when switch is broken off is very big, especially under the situation that the contact area between last static contact seat and the movable contact knife plate increases, is easy to occur the movable contact knife plate and can not pull next situation; On the other hand, service time one is long, can produce excessive wear between movable contact knife plate and the last static contact seat, thereby shortens the useful life of switch.
The utility model content
The utility model technical problem to be solved is that a kind of heavy current disconnecting switches contact knife clamping device that is used for track traffic light, long service life of operating is provided.
For solving the problems of the technologies described above; The heavy current disconnecting switches contact knife clamping device that is used for track traffic that the utility model provides; Comprise through clamping device connecting and the last static contact seat that clamps, static contact seat and movable touch knife down that described movable touch knife is made up of two movable contact knife plates that link together, described on static contact seat and following static contact seat lays respectively at the two ends of movable touch knife and between two movable contact knife plates; Described clamping device comprises rod assembly, supporting component and holds down assembly; One end of described rod assembly is connected with the underframe of isolating switch, and the other end is connected with supporting component, and described supporting component is connected between two movable contact knife plates and is positioned at the centre position of length direction; A described end that holds down assembly is connected the end of movable contact knife plate, and the other end is connected with supporting component.
Described rod assembly comprises drawhead and pull bar, and an end of pull bar and the underframe of isolating switch are hinged, and an end of the other end and drawhead is hinged; The other end of drawhead is connected with supporting component.
Described supporting component comprises back shaft, fixed cover, ball and strutting piece; One end of described back shaft is fixedly connected with drawhead; Fixed cover is socketed on the back shaft, and the quantity of strutting piece is two, lays respectively at the left and right sides of back shaft and all is slidingly fitted in the fixed cover; All have ball between the end face of each strutting piece and the periphery of back shaft, back shaft has the pit that matches with ball with the junction of ball.
The end that described back shaft is connected with drawhead has the shaft shoulder, and the other end is connected with catch, and described fixed cover is between the step surface of the catch and the shaft shoulder.
Described holding down assembly comprises that pressing plate and rotation axis, the quantity of described pressing plate are four, and the quantity of described rotation axis is two, and per two block pressur plates are one group and are connected an end of movable contact knife plate through a rotation axis; Every block pressur plate is all L-shaped, and minor face one side compression is on movable contact knife plate side, and long limit one side compression is on the end face of strutting piece.
On the rotation axis between described two movable contact knife plates, be socketed with the U-shaped dividing plate on the rotation axis of following static contact seat one end, be socketed with back-up ring on the rotation axis of last static contact seat one end, described going up on the static contact seat is connected with locating part.
After adopting above structure, the utility model compared with prior art has the following advantages:
1) before combined floodgate, two movable contact knife plates and be reserved with the gap up and down between the static contact seat, when rod assembly pulling supporting component when drop-down; Utilize supporting component that one end of pressing plate is ejected toward the movable contact knife plate outside; Owing to receive the restriction of rotation axis, utilize lever principle, the other end of pressing plate is compressed into toward movable contact knife plate inboard; Thereby make the movable contact knife plate contact and compress, reach the state of combined floodgate with static contact seat up and down; Therefore, avoid the excessive wear that produces with the spring pre-compacted between movable contact knife plate and the static contact seat of prior art, alleviated operating physical force, prolonged useful life;
2) on back shaft, having designed the structure of the shaft shoulder, is to come the application of force for rod assembly has a contact area when upwards promoting the contact knife plate; Simultaneously, connected catch, had when fixed cover is up slided on back shaft spacingly, be unlikely to skid off outside the back shaft in back shaft upper end.
Description of drawings
Fig. 1 is the main TV structure sketch map of the utility model heavy current disconnecting switches clamping device of being used for track traffic.
Fig. 2 is the left TV structure sketch map of the utility model heavy current disconnecting switches clamping device of being used for track traffic.
Fig. 3 is the structural representation of the A-A of Fig. 1.
Wherein: 1, go up static contact seat; 2, locating part; 3, back-up ring; 4, pressing plate; 5, movable contact knife plate; 6, catch; 7, back shaft; 8, fixed cover; 9, U-shaped dividing plate; 10, rotation axis; 11, following static contact seat; 12, drawhead; 13, pull bar; 14, underframe; 15, strutting piece; 16, ball; 17, pit; 18, the shaft shoulder.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done explanation in further detail.
The structural representation that is used for the heavy current disconnecting switches contact knife clamping device of track traffic by Fig. 1～the utility model shown in Figure 3 can be known; It comprises through clamping device and connecting and the last static contact seat 1 that clamps, following static contact seat 11 and movable touch knife; Described movable touch knife is made up of two movable contact knife plates 5 that link together, and describedly goes up static contact seat 1 and following static contact seat 11 lays respectively at the two ends of movable touch knife and between two movable contact knife plates 5.Described clamping device comprises rod assembly, supporting component and holds down assembly; One end of described rod assembly is connected with the underframe 14 of isolating switch; The other end is connected with supporting component; Described supporting component is connected between two movable contact knife plates 5 and is positioned at the centre position of length direction, and a described end that holds down assembly is connected the end of movable contact knife plate 5, and the other end is connected with supporting component.
Described rod assembly comprises drawhead 12 and pull bar 13, and an end of pull bar 13 and the underframe 14 of isolating switch are hinged, and an end of the other end and drawhead 12 is hinged; The other end of drawhead 12 is connected with supporting component.
Described supporting component comprises back shaft 7, fixed cover 8, ball 16 and strutting piece 15; One end of described back shaft 7 is fixedly connected with drawhead 12; Fixed cover 8 is socketed on the back shaft 7, and the quantity of strutting piece 15 is two, lays respectively at the both sides up and down of back shaft 7 and all is slidingly fitted in the fixed cover 8; All have ball 16 between the periphery of the end face of each strutting piece 15 and back shaft 7, back shaft 7 has the pit 17 that matches with ball 16 with the junction of ball 16.
The end that described back shaft 7 is connected with drawhead 12 has the shaft shoulder 18, and the other end is connected with catch 6, and described fixed cover 8 is between the step surface of the catch 6 and the shaft shoulder 18.
Described holding down assembly comprises pressing plate 4 and rotation axis 10, and the quantity of described pressing plate 4 is four, and the quantity of described rotation axis 10 is two, and per two block pressur plates 4 are one group and are connected an end of movable contact knife plate 5 through a rotation axis 10.Every block pressur plate 4 is all L-shaped, and minor face one side compression is on movable contact knife plate 5 sides, and long side is pressed on the end face of strutting piece 15.
On the rotation axis 10 between described two movable contact knife plates 5, be socketed with U-shaped dividing plate 9 on the rotation axis 10 of following static contact seat 11 1 ends, be socketed with back-up ring 3 on the rotation axis 10 of last static contact seat 1 one ends, described going up on the static contact seat 1 is connected with locating part 2.
The operation principle of the utility model is: when isolating switch is in gate-dividing state, be adjusted at the gap between last static contact seat 1 and following static contact seat 11 and the movable contact knife plate 5 about 0.2mm, make movable contact knife plate 5 in making process with last static contact seat 1, static contact seat 11 does not contact down; To reduce contact friction force each other; When drawhead 12 closes a floodgate under the pulling of pull bar 13 when putting in place, the back-up ring 3 on the movable contact knife plate 5 is just blocked by the locating part 2 on the last static contact seat 1, makes movable contact knife plate 5 with last static contact seat 1, static contact seat 11 closes a floodgate and slightly contacts when putting in place down; At this moment continue pulling drawhead 12; The back shaft 7 that is fixed on the fixed cover 8 that is connected with drawhead 12 will be pulled, and pit 17 inclined-planes on the back shaft 7 will radially outward push up ball 16, makes that the strutting piece 15 in the fixed cover 8 is also radially outward pushed up; End until with pressing plate 4 backs down; At this moment, pressing plate 4 will be a fulcrum with rotation axis 10, and its other end will inwardly press contact knife plate 5; Make movable contact knife plate 5 compress static contact seat 1 and following static contact seat 11, thereby reach the excellent contact purpose.
Claims (6)
1. heavy current disconnecting switches contact knife clamping device that is used for track traffic; Comprise through clamping device and connecting and the last static contact seat (1) that clamps, following static contact seat (11) and movable touch knife; Described movable touch knife is made up of two movable contact knife plates (5) that link together; Describedly go up static contact seat (1) and following static contact seat (11) lays respectively at the two ends of movable touch knife and between two movable contact knife plates (5); It is characterized in that: described clamping device comprises rod assembly, supporting component and holds down assembly; One end of described rod assembly is connected with the underframe (14) of isolating switch, and the other end is connected with supporting component, and described supporting component is connected between two movable contact knife plates (5) and is positioned at the centre position of length direction; A described end that holds down assembly is connected the end of movable contact knife plate (5), and the other end is connected with supporting component.
2. the heavy current disconnecting switches contact knife clamping device that is used for track traffic according to claim 1; It is characterized in that: described rod assembly comprises drawhead (12) and pull bar (13); The underframe (14) of one end of pull bar (13) and isolating switch is hinged, and an end of the other end and drawhead (12) is hinged; The other end of drawhead (12) is connected with supporting component.
3. the heavy current disconnecting switches contact knife clamping device that is used for track traffic according to claim 1 and 2; It is characterized in that: described supporting component comprises back shaft (7), fixed cover (8), ball (16) and strutting piece (15); One end of described back shaft (7) is fixedly connected with drawhead (12); Fixed cover (8) is socketed on the back shaft (7); The quantity of strutting piece (15) is two; Lay respectively at the both sides up and down of back shaft (7) and all be slidingly fitted in the fixed cover (8), all have ball (16) between the periphery of end face of each strutting piece (15) and back shaft (7), back shaft (7) has the pit (17) that matches with ball (16) with the junction of ball (16).
4. the heavy current disconnecting switches contact knife clamping device that is used for track traffic according to claim 3; It is characterized in that: the end that described back shaft (7) is connected with drawhead (12) has the shaft shoulder (18); The other end is connected with catch (6), and described fixed cover (8) is positioned between the step surface of the catch (6) and the shaft shoulder (18).
5. the heavy current disconnecting switches contact knife clamping device that is used for track traffic according to claim 3; It is characterized in that: described holding down assembly comprises pressing plate (4) and rotation axis (10); The quantity of described pressing plate (4) is four; The quantity of described rotation axis (10) is two, and per two block pressur plates (4) are one group and are connected an end of movable contact knife plate (5) through a rotation axis (10); Every block pressur plate (4) is all L-shaped, and minor face one side compression is on movable contact knife plate (5) side, and long limit one side compression is on the end face of strutting piece (15).
6. the heavy current disconnecting switches contact knife clamping device that is used for track traffic according to claim 1; It is characterized in that: on the rotation axis (10) between described two movable contact knife plates (5); Be socketed with U-shaped dividing plate (9) on the rotation axis (10) of following static contact seat (11) one ends; Be socketed with back-up ring (3) on the rotation axis (10) of last static contact seat (1) one end, described going up on the static contact seat (1) is connected with locating part (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202954815U CN202183325U (en) | 2011-08-13 | 2011-08-13 | Large current disconnecting switch contact knife clamping device for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202954815U CN202183325U (en) | 2011-08-13 | 2011-08-13 | Large current disconnecting switch contact knife clamping device for rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202183325U true CN202183325U (en) | 2012-04-04 |
Family
ID=46176354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202954815U Expired - Fee Related CN202183325U (en) | 2011-08-13 | 2011-08-13 | Large current disconnecting switch contact knife clamping device for rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202183325U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511212A (en) * | 2018-05-09 | 2018-09-07 | 河南森源电气股份有限公司 | A kind of high-voltage switch gear contact knife component and high-voltage switch gear |
| CN109216054A (en) * | 2018-10-24 | 2019-01-15 | 首瑞（天津）电气设备有限公司 | A kind of electric appliance component |
| CN111091995A (en) * | 2019-12-31 | 2020-05-01 | 甘肃新空间信息技术有限公司 | High-voltage isolating switch for power distribution cabinet |
-
2011
- 2011-08-13 CN CN2011202954815U patent/CN202183325U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511212A (en) * | 2018-05-09 | 2018-09-07 | 河南森源电气股份有限公司 | A kind of high-voltage switch gear contact knife component and high-voltage switch gear |
| CN109216054A (en) * | 2018-10-24 | 2019-01-15 | 首瑞（天津）电气设备有限公司 | A kind of electric appliance component |
| CN111091995A (en) * | 2019-12-31 | 2020-05-01 | 甘肃新空间信息技术有限公司 | High-voltage isolating switch for power distribution cabinet |
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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: 20120404 Termination date: 20150813 |
|
| EXPY | Termination of patent right or utility model |