CN103470833B - A kind of pressure maintenance mechanism of control valve of quick truck - Google Patents
A kind of pressure maintenance mechanism of control valve of quick truck Download PDFInfo
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- CN103470833B CN103470833B CN201310420600.9A CN201310420600A CN103470833B CN 103470833 B CN103470833 B CN 103470833B CN 201310420600 A CN201310420600 A CN 201310420600A CN 103470833 B CN103470833 B CN 103470833B
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- main piston
- piston rod
- hole
- pressure
- sides
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Abstract
The invention discloses a kind of pressure maintenance mechanism of control valve of quick truck, comprise main piston rod, it is provided with the through hole being communicated with the upper and lower both sides of main piston in described main piston rod, is provided with the throttle mechanism making main piston pressure at both sides air inversion in described through hole.The present invention by arranging the throttle mechanism that can make main piston pressure at both sides air inversion in main piston rod, when any side of main piston in pressure maintaining period pressure air has fluctuation, by the adverse current of throttle mechanism, main piston still can be in state of equilibrium, improves the stability of main piston in pressure maintaining period.Structure of the present invention is ingenious, Be very effective, changes less, easy to implement to existing quick Control Valves for Freight Cars.
Description
Technical field
The present invention relates to a kind of pressure maintenance mechanism of control valve of quick truck.
Background technique
When existing quick Control Valves for Freight Cars is in pressurize position, main piston is in state of equilibrium under upper and lower pressure at both sides and other drag effect.When any side pressure have necessarily fluctuate time, just may destroy the balance of main piston, make it to move or moves down, cause unexpected again braking or alleviate, therefore, the stability improving quick Control Valves for Freight Cars main piston when pressurize position becomes needs in Safety performance.
In order to improve quick Control Valves for Freight Cars pressurize stability, 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 the method increasing main piston action resistance can affect the resistance of other actions, therefore, by setting up limit hole, making main piston pressure at both sides air inversion, then becoming reliable method.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, a kind of pressure maintenance mechanism of control valve of quick truck that effectively can improve quick Control Valves for Freight Cars main piston stability when pressurize position is provided.
Technological scheme of the present invention is achieved in that a kind of pressure maintenance mechanism of control valve of quick truck, comprise main piston rod, it is characterized in that: in described main piston rod, be provided with the through hole being communicated with the upper and lower both sides of main piston, in described through hole, be provided with the throttle mechanism making main piston pressure at both sides air inversion.
Pressure maintenance mechanism of control valve of quick truck of the present invention, described in it, throttle mechanism comprises orifice sleeve, flow regulator pieces and filter dirt sheet, seal ring is provided with between described orifice sleeve and the through-hole wall of main piston rod, described flow regulator pieces is provided with the limit hole being communicated with its upper and lower sides, in the endoporus of described orifice sleeve, be provided with at least one flow regulator pieces form the limit hole path being 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.
Pressure maintenance mechanism of control valve of quick truck of the present invention, orifice sleeve described in it is installed in the tapped hole on main piston rod top by screw thread.
Pressure maintenance mechanism of control valve of quick truck of the present invention, 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 present invention by arranging the throttle mechanism that can make main piston pressure at both sides air inversion in main piston rod, when any side of main piston in pressure maintaining period pressure air has fluctuation, by the adverse current of throttle mechanism, main piston still can be in state of equilibrium, improves the stability of main piston in pressure maintaining period.Structure of the present invention is ingenious, Be very effective, changes less, easy to implement to existing quick Control Valves for Freight Cars.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark in figure: 1 for main piston rod, and 2 be orifice sleeve, and 3 be flow regulator pieces, 4 is filter dirt sheet, and 5 be seal ring, and 6 are limited hole, and 7 is hold to pad.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, a kind of pressure maintenance mechanism of control valve of quick truck, comprise main piston rod 1, the through hole being communicated with the upper and lower both sides of main piston is provided with in described main piston rod 1, the throttle mechanism making main piston pressure at both sides air inversion is provided with in described through hole, described main piston rod 1 is provided with end pad 7, and 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 on by screw thread in the tapped hole on main piston rod 1 top, and and be provided with seal ring 5 between the through-hole wall of main piston rod 1, described flow regulator pieces 3 is provided with the limit hole 6 being communicated with its upper and lower sides, in the endoporus of described orifice sleeve 2, be provided with two flow regulator pieces 3 form the limit hole path being 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 provided with seal ring 5 respectively and between the endoporus of orifice sleeve 2.
Working principle of the present invention: in quick Control Valves for Freight Cars pressure maintaining period, when main piston both sides air pressure has a fluctuation, by the limit hole path in main piston rod, main piston pressure at both sides air is made to 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.Structure of the present invention is ingenious, Be very effective, changes less, easy to implement to existing quick Control Valves for Freight Cars.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a pressure maintenance mechanism of control valve of quick truck, comprise main piston rod (1), it is characterized in that: in described main piston rod (1), be provided with the through hole being communicated with the upper and lower both sides of main piston, in described through hole, be provided with the throttle mechanism making main piston pressure at both sides air inversion;
Described throttle mechanism comprises orifice sleeve (2), flow regulator pieces (3) and filter dirt sheet (4), seal ring (5) is provided with between the through-hole wall of described orifice sleeve (2) and main piston rod (1), described flow regulator pieces (3) is provided with the limit hole (6) being 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) form the limit hole path being 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 provided with seal ring (5) respectively and between the endoporus of orifice sleeve (2).
2. pressure maintenance mechanism of control valve of quick truck according to claim 1, is characterized in that: described orifice sleeve (2) is installed in the tapped hole on main piston rod (1) top by screw thread.
3. pressure maintenance mechanism of control valve of quick truck according to claim 1 and 2, 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 |
|---|---|---|---|
| CN201310420600.9A CN103470833B (en) | 2013-09-16 | 2013-09-16 | A kind of pressure maintenance mechanism of control valve of quick truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420600.9A CN103470833B (en) | 2013-09-16 | 2013-09-16 | A kind of pressure maintenance mechanism of control valve of quick truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103470833A CN103470833A (en) | 2013-12-25 |
| CN103470833B true CN103470833B (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310420600.9A Active CN103470833B (en) | 2013-09-16 | 2013-09-16 | A kind of pressure maintenance mechanism of control valve of quick truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103470833B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117824812B (en) * | 2024-03-06 | 2024-05-07 | 中国空气动力研究与发展中心高速空气动力研究所 | Damping method for weight loading |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646449Y (en) * | 2003-10-17 | 2004-10-06 | 郑州磨料磨具磨削研究所 | Hydraulic control relief valve |
| DE102011075464A1 (en) * | 2010-05-06 | 2011-11-10 | Alfmeier Präzision AG Baugruppen und Systemlösungen | Ventilating valve for ventilating expandable structure, particularly seat bladder for vehicle seat, has sealing element and ventilation hole, which is closed for adjusting target ventilation rate with throttle element |
| CN202972142U (en) * | 2012-12-11 | 2013-06-05 | 四川制动科技股份有限公司 | Piston rod capable of improving stability of 104 distribution valve used for passenger train |
| CN203477500U (en) * | 2013-09-16 | 2014-03-12 | 四川制动科技股份有限公司 | Pressure maintenance mechanism of rapid truck control valve |
-
2013
- 2013-09-16 CN CN201310420600.9A patent/CN103470833B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646449Y (en) * | 2003-10-17 | 2004-10-06 | 郑州磨料磨具磨削研究所 | Hydraulic control relief valve |
| DE102011075464A1 (en) * | 2010-05-06 | 2011-11-10 | Alfmeier Präzision AG Baugruppen und Systemlösungen | Ventilating valve for ventilating expandable structure, particularly seat bladder for vehicle seat, has sealing element and ventilation hole, which is closed for adjusting target ventilation rate with throttle element |
| CN202972142U (en) * | 2012-12-11 | 2013-06-05 | 四川制动科技股份有限公司 | Piston rod capable of improving stability of 104 distribution valve used for passenger train |
| CN203477500U (en) * | 2013-09-16 | 2014-03-12 | 四川制动科技股份有限公司 | Pressure maintenance mechanism of rapid truck control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103470833A (en) | 2013-12-25 |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee after: Meisha Zhongke Brake Technology Co., Ltd. Address before: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee before: Sichuan Brake Science and Technology Co. Ltd. |