CN2893261Y - Special air cylinder for railway stock speed reducer - Google Patents
Special air cylinder for railway stock speed reducer Download PDFInfo
- Publication number
- CN2893261Y CN2893261Y CN 200620006363 CN200620006363U CN2893261Y CN 2893261 Y CN2893261 Y CN 2893261Y CN 200620006363 CN200620006363 CN 200620006363 CN 200620006363 U CN200620006363 U CN 200620006363U CN 2893261 Y CN2893261 Y CN 2893261Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- magnet
- spring
- proportion electro
- 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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- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a proportional directional control valve leading component and is used to output a proportional pressure oil fluid to drive a main valve. In the interior of the valve body, a proportion electro-magnet, a valve plug, a spring, a seal ring, and a fastening bolt are mechanically connected in turn. The utility model is characterized in that the proportion electro-magnet is firmly fixed at one end of the valve body, the part between the proportion electro-magnet and the valve body is embedded with the seal ring, the valve plug and the valve body is in a clearance fit, a pole shoe of the proportion electro-magnet has a direct contact with one end of the valve plug, the other end of the valve plug is in a direct contact with the spring, the spring has the other end contact the valve body directly, and the input oil pocket, output oil pocket, and oil return oil pocket are all processed in the vale body directly; and the arrangement of the valve plug in the valve body is an axle wire symmetric structure. The proportional directional control valve leading component has the advantages of less moving parts, simple structure, small motion inertia, high reversing sensitivity of the valve plug, and a high amplitude-frequency response of the valve (up to 12 - 15HZ).
Description
Affiliated technical field
The utility model relates to a kind of guide's device of hydraulic proportional directional control valve, is applicable to the export ratio pressure oil liquid, drives main valve.
Background technique
At present, the pilot stage of known hydraulic proportional directional control valve adopts three-way slide valve formula ratio pressure reduction structure, and the moving element of its guide's spool is many, complex structure, gross mass is big, so motional inertia is also big, influenced the sensitive reversing degree of spool, amplitude-frequency response only is 6-8 He Zhi.
Summary of the invention
In order to improve the frequency response of main valve, the utility model provides a kind of guide's parts of proportion directional valve, and its inner moving parts only is 2, and the indirectly-acting of power displacement is become direct effect, thereby shortened the response time of guide's part, improved sensitivity.
The technological scheme that its technical problem that solves the utility model adopts is: proportion electro-magnet, spool, spring, seal ring, fastening screw trip bolt sequential machine connect in the valve body, it is characterized in that: fastening screw trip bolt is fastened on proportion electro-magnet at one end of valve body, embed seal ring between proportion electro-magnet and the valve body, spool and valve body Spielpassung, the pole shoe of proportion electro-magnet directly contacts with an end of spool, the other end of spool directly contacts with spring, the spring the other end directly contacts with valve body, and input, output, oil return oil pocket are all directly processed in valve body; Spool is arranged as the medial axis symplex structure in valve body.
The basic principle of guide's parts is: when the stream of powering outside proportion electro-magnet equalled zero, electromagnet did not have thrust, and spool is under the effect of spring, extend, import oil pocket and close this moment, and the fluid of output oil pocket is communicated with oil back chamber through the spool endoporus, and output oil pocket pressure is zero; When proportion electro-magnet gets electricly, electromagnet promotes to move in the spool, along with electric current increases, the spool travel amount increases, and import oil pocket and open gradually this moment, and output oil pocket and oil back chamber are closed gradually, pressure oil flows into the output oil pocket, the pressure of exporting oil pocket is powered outward with electromagnet flow increase in direct ratio.
The beneficial effects of the utility model are: moving parts is few, and is simple in structure, and motional inertia is little, the sensitive reversing degree height of spool, and the amplitude-frequency response of valve can reach 12-15 He Zhi.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is embodiment guide's modular construction.This figure draws to face complete section, has reflected the annexation of each assembly in it.
Fig. 2 is embodiment guide's parts cross sections, is further replenishing Fig. 1.
Among the figure: 1. fastening screw trip bolt, 2. seal ring, 3. proportion electro-magnet, 4. valve body, 5. spool, 6. spring, 7. output oil pocket A, 8. input oil pocket, 9. oil back chamber, 10. output oil pocket B.
Embodiment
Present embodiment medial axis symplex structure; During spool travel amount 1.5mm, corresponding outer is 250mA for initial current, and this moment, the spool cross-drilled hole was just connected with input oil pocket knife-edge part.
The present embodiment spool is directly through being taken as 6mm.
The first pressing of output oil pocket is calculated as follows:
1. (p
A-p
T) S+F
Spring=F
Electromagnetic force
In the formula: p
A---output oil pocket pressure
p
T---back oil cavity pressure
S---spool sectional area
F
Spring---spring force
F
Electromagnetic force--(initial current is 250mA to-electromagnet thrust, F
Electromagnetic force=70N)
2. spring force is taken as: F
Spring=pTS
∴ p
AS=F
Electromagnetic force
③∵
Claims (2)
1. proportion directional valve guide parts, proportion electro-magnet, spool, spring, seal ring, fastening screw trip bolt sequential machine connect in the valve body, it is characterized in that: fastening screw trip bolt is fastened on proportion electro-magnet at one end of valve body, embed seal ring between proportion electro-magnet and the valve body, spool and valve body Spielpassung, the pole shoe of proportion electro-magnet directly contacts with an end of spool, the other end of spool directly contacts with spring, the spring the other end directly contacts with valve body, and input, output, oil return oil pocket are all directly processed in valve body.
2. guide's parts according to claim 1 is characterized in that: spool is arranged as the medial axis symplex structure in valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006363 CN2893261Y (en) | 2006-02-21 | 2006-02-21 | Special air cylinder for railway stock speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006363 CN2893261Y (en) | 2006-02-21 | 2006-02-21 | Special air cylinder for railway stock speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2893261Y true CN2893261Y (en) | 2007-04-25 |
Family
ID=38061422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620006363 Expired - Lifetime CN2893261Y (en) | 2006-02-21 | 2006-02-21 | Special air cylinder for railway stock speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2893261Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454747A (en) * | 2014-12-05 | 2015-03-25 | 浙江大学 | Novel high-frequency response pilot valve adopting double-three-position three-way proportional valve structure |
| CN105836094A (en) * | 2016-05-27 | 2016-08-10 | 江苏海事职业技术学院 | Special pilot electrohydraulic proportional valve for steering engine |
-
2006
- 2006-02-21 CN CN 200620006363 patent/CN2893261Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454747A (en) * | 2014-12-05 | 2015-03-25 | 浙江大学 | Novel high-frequency response pilot valve adopting double-three-position three-way proportional valve structure |
| CN104454747B (en) * | 2014-12-05 | 2017-01-04 | 浙江大学 | A kind of novel high-frequency using double 3-position-3-way proportioning valve structure rings pilot valve |
| CN105836094A (en) * | 2016-05-27 | 2016-08-10 | 江苏海事职业技术学院 | Special pilot electrohydraulic proportional valve for steering engine |
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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 |
Granted publication date: 20070425 |
|
| EXPY | Termination of patent right or utility model |