CN202855584U - Wide-shoulder-cam Key-lifting switch - Google Patents
Wide-shoulder-cam Key-lifting switch Download PDFInfo
- Publication number
- CN202855584U CN202855584U CN 201220505315 CN201220505315U CN202855584U CN 202855584 U CN202855584 U CN 202855584U CN 201220505315 CN201220505315 CN 201220505315 CN 201220505315 U CN201220505315 U CN 201220505315U CN 202855584 U CN202855584 U CN 202855584U
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- CN
- China
- Prior art keywords
- shoulder
- quick
- wide
- cam
- key
- 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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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A wide-shoulder-cam key-lifting switch includes three quick-action switches fixed on a bracket, as well as a bi-directional wide-shoulder cam used for driving two quick-action switches and a unidirectional wide-shoulder cam used for driving one quick-action switch, wherein the bi-directional wide-shoulder cam and the unidirectional wide-shoulder are used cooperatively with the three quick-action switches, and are respectively connected with the a handle. According to the wide-shoulder-cam key-lifting switch of the utility model, wide-shoulder cams are used on a key-lifting switch, such that a group of reconnection quick-action switches are added on the condition that the installation size of the original key-lifting switch of a locomotive is not modified, as a result, a requirement of a "1 + 1 double main circuit breakers" for the transformation of a locomotive control circuit and a requirement for large number of switches on the condition that key-lifting switch installation size is limited can be satisfied, and therefore, the reliability of the main circuit breakers and a whole locomotive electrical system can be improved.
Description
Technical field
The utility model relates to a kind of key-lifting switch, is specifically related to a kind of key-lifting switch of wide shoulder cam.
Background technology
Main circuit breaker of railway engine is widely used in railway electric locomotive, the motor train unit.For improving the locomotive electric cad system system reliability, adopt " the two main circuit breakers of 1+1 " to become inexorable trend.For making " the two main circuit breakers of 1+1 " reliability application in railway electric locomotive, motor train unit, need the key-lifting switch in the existing locomotive control circuit is carried out upgrading, but can not change profile and the installation dimension of former locomotive switch knob.
Summary of the invention
The purpose of this utility model is not change under the prerequisite of the profile of former locomotive switch knob and installation dimension, provide a kind of key-lifting switch that can realize the wide shoulder cam of locomotive " the two main circuit breakers of 1+1 " control circuit upgrading, to improve the locomotive electric cad system system reliability.
For achieving the above object, the technical solution adopted in the utility model is: comprise three quick-action switches that are fixed on the support, and two-way wide shoulder cam and unidirectional wide shoulder cam that drives a quick-action switch that drives two quick-action switches that is used in conjunction with three quick-action switches, and two-way wide shoulder cam is connected with handle respectively with unidirectional wide shoulder cam.
Wide shoulder cam of the present utility model not only shoulder width satisfies the requirement that drives simultaneously two groups of quick-action switches, and intensity high energy satisfies the requirement of two groups of quick-action switch actuating forces.Its cam contour can be made various shapes as required.
The two-way wide shoulder cam of the utility model can drive simultaneously two groups of quick-action switches and realize Double-linkage, and unidirectional wide shoulder cam can realize driving another quick-action switch according to actual needs.Because the utility model adopts two-way wide shoulder cam at key-lifting switch, realized that by adopting two-way wide shoulder cam every key-lifting switch is with the requirement of fashionable dress with three quick-action switches under the prerequisite that does not change former key-lifting switch profile and installation dimension, realized the control of locomotive " the two main circuit breakers of 1+1 ", improved the reliability of main circuit breaker of railway engine and whole electrical system, thereby it is broken to be to overcome locomotive that prior art causes unnecessary maintenance and machine.
Description of drawings
Fig. 1 is the structural representation that the utility model adopts the key-lifting switch of new molded breadth shoulder cam;
Fig. 2 is the structural representation of the two-way wide shoulder cam of the utility model;
Fig. 3 is the structural representation of the unidirectional wide shoulder cam of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to Fig. 1～Fig. 3, the utility model comprises three quick-action switches 1 that are arranged on the key-lifting switch support 2, be arranged on two-way wide shoulder cam 5 and the unidirectional wide shoulder cam 3 of handle 4 both sides, two-way wide shoulder cam 5 can drive two groups of quick-action switches 1 simultaneously, thereby under the prerequisite that does not change key-lifting switch profile and installation dimension, realize single cam to the duplex driving effect of two groups of quick-action switches, and two groups of common effects that drive 3 groups of quick-action switches of cam.
Wide shoulder cam of the present utility model is divided into that two-way shoulder is widened, unidirectional shoulder is widened two kinds.Two-way wide shoulder cam can realize that single cam is to the duplex driving effect of two groups of quick-action switches; Two-way wide shoulder cam and unidirectional wide shoulder cam are used in conjunction with two common functions that drive 3 quick-action switches of cam under the prerequisite that can realize not changing former handle and key-lifting switch profile and installation dimension.Prop up the effect of erecting fixed handle and quick-action switch.Support is semi-enclosed at quick-action switch depression bar components, can realize driving the function of 3 quick-action switches under the prerequisite that does not change former key-lifting switch profile and installation dimension.
Claims (1)
1. the key-lifting switch of a wide shoulder cam, it is characterized in that: comprise three quick-action switches (1) that are fixed on the support (2), and of being used in conjunction with three quick-action switches (1) drives the two-way wide shoulder cam (5) of two quick-action switches and the unidirectional wide shoulder cam (3) of a quick-action switch of a driving, and two-way wide shoulder cam (5) is connected with handle (4) respectively with unidirectional wide shoulder cam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505315 CN202855584U (en) | 2012-09-28 | 2012-09-28 | Wide-shoulder-cam Key-lifting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505315 CN202855584U (en) | 2012-09-28 | 2012-09-28 | Wide-shoulder-cam Key-lifting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202855584U true CN202855584U (en) | 2013-04-03 |
Family
ID=47986753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220505315 Expired - Lifetime CN202855584U (en) | 2012-09-28 | 2012-09-28 | Wide-shoulder-cam Key-lifting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202855584U (en) |
-
2012
- 2012-09-28 CN CN 201220505315 patent/CN202855584U/en not_active Expired - Lifetime
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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: 20130403 |