CN203477500U - Pressure maintenance mechanism of rapid truck control valve - Google Patents
Pressure maintenance mechanism of rapid truck control valve Download PDFInfo
- Publication number
- CN203477500U CN203477500U CN201320571786.3U CN201320571786U CN203477500U CN 203477500 U CN203477500 U CN 203477500U CN 201320571786 U CN201320571786 U CN 201320571786U CN 203477500 U CN203477500 U CN 203477500U
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- China
- Prior art keywords
- main piston
- piston rod
- hole
- sides
- rapid
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a pressure maintenance mechanism of a rapid truck control valve. The pressure maintenance mechanism of the rapid truck control valve comprises a main piston rod. A through hole enabling the upper side and the lower side of a main piston to be communicated with each other is formed in the main piston rod. A throttling mechanism which enables forced air of the two sides of the main piston to flow reversely is arranged in the through hole. According to the pressure maintenance mechanism of the rapid truck control valve, due to the fact that the throttling mechanism which enables the forced air of the two sides of the main piston to flow reversely is arranged in the main piston rod, when the forced air at any side of the main piston fluctuates in the process of pressure maintenance, the main piston can still be in the balanced state through reverse flow of the throttling mechanism, and the stability of the main piston is improved in the process of pressure maintenance. The pressure maintenance mechanism of the rapid truck control valve is ingenious in structure and remarkable in effect. According to the pressure maintenance mechanism of the rapid truck control valve, change of an existing rapid truck control valve is little, and implementation is easy.
Description
Technical field
The utility model relates to a kind of quick Control Valves for Freight Cars pressure holding.
Background technique
Existing quick Control Valves for Freight Cars when pressurize position, main piston under upper and lower pressure at both sides and other drag effect in state of equilibrium.When any side pressure has certain fluctuation, just may destroy the balance of main piston, make to move or move down on it, cause unexpected braking again or alleviate, therefore, the stability that improves quick Control Valves for Freight Cars main piston when pressurize position becomes needs aspect Safety performance.
In order to improve quick Control Valves for Freight Cars pressurize stability, on the basis of existing quick Control Valves for Freight Cars structure, there are two approach: increase main piston action resistance and set up reverse flow hole.Wherein, adopt and increase the resistance that the method for main piston action resistance can affect other actions, therefore, by setting up limit hole, make main piston pressure at both sides air inversion, become reliable method.
Model utility content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of quick Control Valves for Freight Cars pressure holding that can effectively improve quick Control Valves for Freight Cars main piston stability when pressurize position.
The technical solution of the utility model is achieved in that a kind of quick Control Valves for Freight Cars pressure holding, comprise main piston rod, it is characterized in that: in described main piston rod, be provided with the through hole that is communicated with the upper and lower both sides of main piston, in described through hole, be provided with the throttle mechanism that makes main piston pressure at both sides air inversion.
Quick Control Valves for Freight Cars pressure holding described in the utility model, described in it, throttle mechanism comprises orifice sleeve, flow regulator pieces and filter dirt sheet, between described orifice sleeve and the through-hole wall of main piston rod, be provided with seal ring, on described flow regulator pieces, be provided with the limit hole that is communicated with its upper and lower sides, in the endoporus of described orifice sleeve, be provided with at least one flow regulator pieces and form the limit hole path that is communicated with the upper and lower both sides of main piston, described filter dirt sheet is separately positioned in the endoporus of orifice sleeve, limit path both sides, hole, described flow regulator pieces and filter dirt sheet are provided with seal ring respectively and between the endoporus of orifice sleeve.
Quick Control Valves for Freight Cars pressure holding described in the utility model, described in it, orifice sleeve is installed in the tapped hole on main piston rod top by screw thread.
Quick Control Valves for Freight Cars pressure holding described in the utility model, it is provided with end pad on described main piston rod, and described end pad is arranged on the top of main piston rod by positioning ring groove.
The utility model by arranging the throttle mechanism that can make main piston pressure at both sides air inversion in main piston rod, when in pressure maintaining period, any side pressure air of main piston has fluctuation, by the adverse current of throttle mechanism, main piston still can, in state of equilibrium, improve the stability of main piston in pressure maintaining period.The utility model structure is ingenious, and effect is remarkable, to existing quick Control Valves for Freight Cars, changes less, easy to implement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark in figure: 1 is main piston rod, 2 is orifice sleeve, and 3 is flow regulator pieces, and 4 is filter dirt sheet, and 5 be seal ring, 6 holes that are limited, 7 pad for end.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of quick Control Valves for Freight Cars pressure holding, comprise main piston rod 1, in described main piston rod 1, be provided with the through hole that is communicated with the upper and lower both sides of main piston, in described through hole, be provided with the throttle mechanism that makes main piston pressure at both sides air inversion, on described main piston rod 1, be provided with end pad 7, described end pad 7 is arranged on the top of main piston rod 1 by positioning ring groove.
Wherein, described throttle mechanism comprises orifice sleeve 2, flow regulator pieces 3 and filter dirt sheet 4, described orifice sleeve 2 is installed in the tapped hole on main piston rod 1 top by screw thread, and and between the through-hole wall of main piston rod 1, be provided with seal ring 5, on described flow regulator pieces 3, be provided with the limit hole 6 that is communicated with its upper and lower sides, in the endoporus of described orifice sleeve 2, be provided with two flow regulator pieces 3 and form the limit hole path that is communicated with the upper and lower both sides of main piston, described filter dirt sheet 4 is separately positioned in the endoporus of orifice sleeve 2, limit path both sides, hole, described flow regulator pieces 3 and filter dirt sheet 4 are respectively and between the endoporus of orifice sleeve 2, be provided with seal ring 5.
Working principle of the present utility model: in quick Control Valves for Freight Cars pressure maintaining period, when main piston both sides air pressure has fluctuation, by the limit hole path in main piston rod, make main piston pressure at both sides air have certain counter flow action, fluctuating range is reduced, do not destroy the balance of main piston, improve the stability of quick Control Valves for Freight Cars main piston when pressurize position.The utility model structure is ingenious, and effect is remarkable, to existing quick Control Valves for Freight Cars, changes less, easy to implement.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a quick Control Valves for Freight Cars pressure holding, comprise main piston rod (1), it is characterized in that: in described main piston rod (1), be provided with the through hole that is communicated with the upper and lower both sides of main piston, in described through hole, be provided with the throttle mechanism that makes main piston pressure at both sides air inversion.
2. quick Control Valves for Freight Cars pressure holding according to claim 1, it is characterized in that: described throttle mechanism comprises orifice sleeve (2), flow regulator pieces (3) and filter dirt sheet (4), between the through-hole wall of described orifice sleeve (2) and main piston rod (1), be provided with seal ring (5), on described flow regulator pieces (3), be provided with the limit hole (6) that is communicated with its upper and lower sides, in the endoporus of described orifice sleeve (2), be provided with at least one flow regulator pieces (3) and form the limit hole path that is communicated with the upper and lower both sides of main piston, described filter dirt sheet (4) is separately positioned in the endoporus of orifice sleeve (2), limit path both sides, hole, described flow regulator pieces (3) and filter dirt sheet (4) are respectively and between the endoporus of orifice sleeve (2), be provided with seal ring (5).
3. quick Control Valves for Freight Cars pressure holding according to claim 2, is characterized in that: described orifice sleeve (2) is installed in the tapped hole on main piston rod (1) top by screw thread.
4. according to the quick Control Valves for Freight Cars pressure holding described in claim 1,2 or 3, it is characterized in that: on described main piston rod (1), be provided with end pad (7), described end pad (7) is arranged on the top of main piston rod (1) by positioning ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571786.3U CN203477500U (en) | 2013-09-16 | 2013-09-16 | Pressure maintenance mechanism of rapid truck control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320571786.3U CN203477500U (en) | 2013-09-16 | 2013-09-16 | Pressure maintenance mechanism of rapid truck control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477500U true CN203477500U (en) | 2014-03-12 |
Family
ID=50225831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320571786.3U Withdrawn - After Issue CN203477500U (en) | 2013-09-16 | 2013-09-16 | Pressure maintenance mechanism of rapid truck control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470833A (en) * | 2013-09-16 | 2013-12-25 | 四川制动科技股份有限公司 | Pressure maintenance mechanism of control valve of quick truck |
-
2013
- 2013-09-16 CN CN201320571786.3U patent/CN203477500U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470833A (en) * | 2013-09-16 | 2013-12-25 | 四川制动科技股份有限公司 | Pressure maintenance mechanism of control valve of quick truck |
| CN103470833B (en) * | 2013-09-16 | 2015-12-23 | 四川制动科技股份有限公司 | A kind of pressure maintenance mechanism of control valve of quick truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151223 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |