CN105508332A - Assembly technical method of mode selecting valve based on interference fit seal - Google Patents
Assembly technical method of mode selecting valve based on interference fit seal Download PDFInfo
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- CN105508332A CN105508332A CN201410503002.2A CN201410503002A CN105508332A CN 105508332 A CN105508332 A CN 105508332A CN 201410503002 A CN201410503002 A CN 201410503002A CN 105508332 A CN105508332 A CN 105508332A
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- selector valve
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Abstract
The invention belongs to the technical field of hydraulics and relates to an assembly technology of an actuator mode selecting valve based on an interference fit seal mode. The assembly technology is characterized in that the mode selecting valve consists of a cylindrical pin (1), a main valve element (2), a main valve bush (3), a spacer bush assembly (4), a standby valve bush (5), a standby valve element (6) and a shell (7); and an interference fit seal structure is adopted among the main valve bush, the standby valve bush and the shell, the spacer bush assembly is in clearance fit with the shell, and the clearance is sealed by a seal rubber ring (8) on the spacer bush assembly. The shell is made from an aluminum alloy material, and other parts (1 to 7) are made from a stainless steel material. Under the condition of two different materials, the interference fit seal structure is realized between the grooved mode selecting valve and the shell. Through reasonably controlling temperature and an assembly procedure, the assembly quality is improved, the performance of the grooved mode selecting valve is ensured, and accordingly, the development requirements of the groove integrated actuator are met.
Description
Technical field
The invention belongs to technical field of hydraulic pressure, relating to actuator with to adopting based on the assembling of the mode selector valve of interference fit seal mode.
Background technique
Traditional mode selector valve valve pocket all uses and organizes annular groove more, O-ring seal realizes and communication between housing oil circuit and isolation, this makes the number ratio of oil circuit in housing huger, and the location comparison in oil circuit hole is fixed, housing design more complicated causes the volume and weight of whole actuator larger.Cannot meet the requirement of present generation aircraft installing space and loss of weight.Trench mode selector valve be by traditional changing valve, bypass valve, return in the function i ntegration unified innovation of valve, eliminating with cushion rubber is the conventional sealing method of sealing means.The structure of interference fit between valve pocket and housing is adopted to seal.Compare traditional modal selector valve, avoid the use of O-ring seal, reduce the cost of actuator.Due to the requirement of aviation loss of weight, housing adopts aluminum alloy material.Compared with Steel material material, aluminum alloy material expansion coefficient greatly and softer, under two kinds of different materials, the valve performance that direct trench mode is selected by the assembly quality of trench mode selector valve.Therefore under different materials, for the assembling based on the trench mode selector valve of interference fit seal, the present invention adopts temperature differential method to carry out conservative control to temperature and assembly process, to realize the assembling of trench mode selector valve fast, accurately.
Summary of the invention
The object of the invention is: the present invention adopts temperature differential method, to under two kinds of different materials, the sealing configuration of interference fit between trench mode selector valve and housing, by carrying out conservative control to temperature and assembly process, improve assembly quality, to ensure the performance of trench mode selector valve and then to meet the development demand of groove integrated actuator.
Technological scheme of the present invention is: be first on housing and groove mode selector valve cover, corresponding position design positioning pin hole and locating slot respectively according to the final position of trench mode selector valve, before assembling, first loaded in housing by straight pin.Secondly, according to the size of magnitude of interference between groove mode selector valve and housing, select suitable temperature range to heat housing, trench mode selector valve selects normal temperature or freezing in advance according to actual conditions.Again, according to main valve housing, the erection sequence of spacer assembly, standby valve pocket, completes the hot assembly process of trench mode selector valve at normal temperatures successively.Finally, complete the assembling of other parts at normal temperatures, all assembly processes are carried out at normal temperatures.
Based on the mode selector valve assembly technique of interference fit seal, it is characterized in that: mode selector valve is made up of straight pin 1, main valve plug 2, main valve housing 3, spacer assembly 4, standby valve pocket 5, standby spool 6, housing 7, main valve housing, standby be interference fit seal structure between valve pocket and housing, it is Spielpassung between spacer assembly and housing, spacer assembly there is O-ring seal 8 seal, housing is aluminum alloy material, other parts 1 ~ 7 are stainless steel material, and this assembly technique comprises the following steps:
The first step, is first design positioning pin hole and locating slot respectively according to corresponding position on housing and groove mode selector valve valve pocket, final position of trench mode selector valve, before assembling, is first loaded in housing by straight pin.
Second step, according to the size of magnitude of interference between groove mode selector valve and housing, select certain temperature range to heat housing, mode selector valve selects normal temperature or freezing in advance according to actual conditions.
3rd step, according to main valve housing, the erection sequence of spacer assembly, standby valve pocket, completes the hot assembly process of trench mode selector valve at normal temperatures successively.
Magnitude of interference scope between said trench mode selector valve and housing is: 0.004mm ~ 0.02mm; The temperature range of housing heating is: 70 DEG C ~ 155 DEG C, heating time is 2 ~ 3 hours; Freezing temperature controlling range is-40 DEG C ~-65 DEG C in advance, and the freezing time is 2 ~ 3 hours.
Advantage of the present invention is: one aspect of the present invention carries out angle location by straight pin to trench mode selector valve, can realize quick mounting and improve the merging precision in trench mode selector valve surface grooves and housing oil circuit hole in assembly process.On the other hand, by the conservative control of the temperature difference and the reasonable arrangement of assembly process, efficiency and a survival rate of trench mode selector valve assembling can be improved.
Accompanying drawing explanation
Fig. 1 is assembling schematic diagram of the present invention.It is made up of straight pin 1, main valve plug 2, main valve housing 3, spacer assembly 4, standby valve pocket 5, standby spool 6, housing 7.Spacer assembly there is O-ring seal 8 seal.
Embodiment
Below the present invention is described in further details.Comprise the following steps:
The first step, is first on housing and groove mode selector valve cover, corresponding position design positioning pin hole and locating slot respectively according to the position of end-state, before assembling, is first loaded in housing by straight pin.Before assembly, be very important link to the cleaning of housing, main valve housing, main valve plug, standby valve pocket, standby spool, spacer assembly, contamination particle can affect the quality of assembling.
Second step, according to the scope of magnitude of interference between groove mode selector valve valve pocket and housing, selects suitable temperature range to heat housing, wants heating time fully, makes case swells evenly and stablizes.Trench mode selects valve pocket determine to select normal temperature assembling according to actual conditions or freezingly in advance to assemble again.
3rd step, according to main valve housing, the erection sequence of spacer assembly, standby valve pocket completes hot assembly process at normal temperatures successively.Wherein, spacer assembly and housing are Spielpassung, and spacer assembly is furnished with O-ring seal, and therefore, spacer assembly needs freezing processing in advance before assembly, to make O-ring seal fully shrink, and convenient loading.
4th step, drops to after normal temperature until case temperature, completes the assembling of other parts.
Between said trench mode selector valve and housing, magnitude of interference scope is: 0.004mm ~ 0.02mm; The temperature range of housing heating is: 70 DEG C ~ 155 DEG C, heating time is 2 ~ 3 hours; Freezing temperature controlling range is-40 DEG C ~-65 DEG C in advance, and the freezing time is 2 ~ 3 hours.
In one embodiment of the invention, the magnitude of interference between said trench mode selector valve and housing is 0.0065mm, and housing heating-up temperature is 100 DEG C, and heating time is 2 hours; Valve pocket, spacer assembly carry out freezing in advance, freezing temperature and are-40 DEG C, and cooling time is 2 hours; Through test, main valve housing, spacer assembly and standby valve pocket all can accurately, smoothly load.
Table 1: the physical property of two kinds of different materials.
Claims (2)
1. based on the mode selector valve assembly technique of interference fit seal, it is characterized in that: mode selector valve is by straight pin (1), main valve plug (2), main valve housing (3), spacer assembly (4), standby valve pocket (5), standby spool (6), housing (7) forms, main valve housing, standby is interference fit seal structure between valve pocket and housing, it is Spielpassung between spacer assembly and housing, spacer assembly there is O-ring seal (8) seal, housing is aluminum alloy material, other parts (1) ~ (7) are stainless steel material, this assembly technique comprises the following steps:
The first step, is first design positioning pin hole and locating slot respectively according to corresponding position on housing and groove mode selector valve valve pocket, final position of trench mode selector valve, before assembling, first loads in housing by straight pin;
Second step, according to the size of magnitude of interference between groove mode selector valve and housing, select certain temperature range to heat housing, mode selector valve selects normal temperature or freezing in advance according to actual conditions;
3rd step, according to main valve housing, the erection sequence of spacer assembly, standby valve pocket, completes the hot assembly process of trench mode selector valve at normal temperatures successively.
2. the mode selector valve assembly technique based on interference fit seal according to claim 1, is characterized in that: the magnitude of interference scope between said trench mode selector valve and housing is: 0.004mm ~ 0.02mm; The temperature range of housing heating is: 70 DEG C ~ 155 DEG C, heating time is 2 ~ 3 hours; Freezing temperature controlling range is-40 DEG C ~-65 DEG C in advance, and the freezing time is 2 ~ 3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503002.2A CN105508332A (en) | 2014-09-26 | 2014-09-26 | Assembly technical method of mode selecting valve based on interference fit seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503002.2A CN105508332A (en) | 2014-09-26 | 2014-09-26 | Assembly technical method of mode selecting valve based on interference fit seal |
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| Publication Number | Publication Date |
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| CN105508332A true CN105508332A (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410503002.2A Pending CN105508332A (en) | 2014-09-26 | 2014-09-26 | Assembly technical method of mode selecting valve based on interference fit seal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194905A (en) * | 2016-07-22 | 2016-12-07 | 山东临工工程机械有限公司 | A kind of method utilizing area concentration that Hydraulic Elements cleannes are controlled |
| CN107489668A (en) * | 2017-07-18 | 2017-12-19 | 中国航空工业集团公司西安飞行自动控制研究所 | Controlling organization during a kind of split type mode conversion is returned |
| CN107524652A (en) * | 2017-07-18 | 2017-12-29 | 中国航空工业集团公司西安飞行自动控制研究所 | Valve design method during trench mode based on gap stream is returned |
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| JP2000352405A (en) * | 1999-06-10 | 2000-12-19 | Teijin Seiki Co Ltd | Mode selector valve and actuation system having the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194905A (en) * | 2016-07-22 | 2016-12-07 | 山东临工工程机械有限公司 | A kind of method utilizing area concentration that Hydraulic Elements cleannes are controlled |
| CN107489668A (en) * | 2017-07-18 | 2017-12-19 | 中国航空工业集团公司西安飞行自动控制研究所 | Controlling organization during a kind of split type mode conversion is returned |
| CN107524652A (en) * | 2017-07-18 | 2017-12-29 | 中国航空工业集团公司西安飞行自动控制研究所 | Valve design method during trench mode based on gap stream is returned |
| CN107489668B (en) * | 2017-07-18 | 2019-10-18 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of middle control mechanism of split type mode conversion time |
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Application publication date: 20160420 |
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