CN208350354U - Device for undercarriage static buffering performance test - Google Patents
Device for undercarriage static buffering performance test Download PDFInfo
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- CN208350354U CN208350354U CN201820938805.4U CN201820938805U CN208350354U CN 208350354 U CN208350354 U CN 208350354U CN 201820938805 U CN201820938805 U CN 201820938805U CN 208350354 U CN208350354 U CN 208350354U
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- undercarriage
- air
- temperature
- flexible bag
- valve
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Abstract
The utility model relates to the device for undercarriage static buffering performance test, including press machine and connecting tooling, undercarriage to be tested can be fixed in press machine by the connecting tooling；It further include the flexible bag for wrapping up undercarriage to be tested, which can be with the flexible and flexible of the undercarriage damper leg to be tested；Temperature control device is communicated on the flexible bag.The utility model integrally wraps up undercarriage, the air of pre-set temperature is fed through in the space by temperature control device, the air themperature in space is set to reach the temperature value of requirement by temperature control device, experimental enviroment is closer to true use environment.By the present apparatus can without change the outfit undercarriage in the case where can disposably realize the static load of high temperature, room temperature and low temperature environment-stroke curve test, be conducive to lifting test efficiency, effectively shorten the lead time, easy to implement, wide adaptability.
Description
Technical field
The utility model belongs to aviation Landing Gear Design technical field, is related to for undercarriage static buffering performance test
Device.
Background technique
Undercarriage need to carry out static load-stroke cushioning characteristics test of damper leg in factory inspection and acceptance.Usually
It can be carried out under normal temperature environment, obtain the load value identical with design, then carried by the dynamic that landing gear drop test obtains
Lotus-stroke test result is modified quiescent value, is superimposed repeatedly, obtains final design end value.Subsequently through meeting
Dynamic and static load-stroke curve figure undercarriage individually carry out high temperature, low temperature environment test again, verify undercarriage with this
Can whether adaptive temperature environmental requirement, carry out the R&D cycle consideration environment that is longer, and cannot integrating of continuous consume in this way
Temperature is to the influence of static load-stroke cushioning characteristics test.
With the development of science and technology and design philosophy steps up, and on the type of subsequent research and development, gradually requires
The mode that undercarriage static load-stroke cushioning characteristics test is combined with high temperature, low-temperature test carries out；From another angle
It says, can also be supported to realize that the drop-test under high temperature, low temperature environment provides data.
Utility model content
The purpose of this utility model is that in view of the deficiencies of the prior art, providing for undercarriage static buffering performance test
Device, with the authenticity of lifting gear static buffering performance test results.
In order to solve the above-mentioned technical problem, the technical solution of the utility model are as follows: tried for undercarriage static buffering performance
Undercarriage to be tested can be fixed in press machine by the device tested, including press machine and connecting tooling, the connecting tooling；Also wrap
The flexible bag for wrapping up undercarriage to be tested is included, which can stretch with the flexible of the undercarriage damper leg to be tested
Contracting；The flexible bag is communicated with temperature control device.
Further, the connecting tooling includes upper connecting tooling and lower connecting tooling, and the undercarriage is fixed on company
It connects between tooling and lower connecting tooling.
Further, flexible press machine can be conventional Take-off and Landing frame cushioning characteristics test press.
Further, the flexible bag includes the first noumenon and the second ontology docked with the first noumenon, the first
The top of body is fixed on connecting tooling, and the second ontology is telescopic barrel structure, and lower company is fixed in the bottom end of the second ontology
It connects in tooling.
Further, telescopic barrel structure is similar to the structure of existing retractable sucker telescopable portion.Further,
Second ontology is made of soft material, is successively arranged a plurality of annular folding line on the second ontology from the bottom to top.
Further, the first noumenon can be used environmental cabinet tank wall material and be made.
Further, the second ontology material made of fluorubber and rubber composition is made, and has high temperature resistant, low temperature resistant
The ability of environment.
Further, the temperature control device includes heater and refrigerator, the gas vent of heater, refrigerator
Gas vent is connected to flexible bag；The gas feed of heater, the gas feed of refrigerator are connected to flexible bag.It is preferred that
Ground, the communicating position of gas vent, gas feed and flexible bag is in the different height position of flexible bag.
Further, the gas feed of heater, the gas feed of refrigerator and flexible bag pass through the first air-valve converter
And associated conduit connection, the pipeline between the first air-valve converter and flexible bag are equipped with the first air-supply switch valve, the first air-valve
Pipeline between converter and refrigerator is equipped with the second air-supply switch valve；The gas vent of heater, the gas of refrigerator go out
Mouth is connected with flexible bag by the second air-valve converter and associated conduit, on the pipeline between the second air-valve converter and heater
Equipped with the first unidirectional air-valve, the pipeline between the second air-valve converter and refrigerator is equipped with the second unidirectional air-valve.
The device of the invention can design specifically flexible bag on the basis of existing press machine and tooling, will be to be tested
Undercarriage wraps up, and forms a seal chamber partially or fully, then will be defaulted in advance by temperature control device specific
The high temperature or Cryogenic air of temperature value input in flexible bag, are heated up or are cooled down to undercarriage, so that undercarriage is reached test and want
Temperature is sought, the undercarriage working condition and research environment temperature under simulation particular surroundings are to undercarriage static load-stroke curve
The influence of numerical value, while can realize that undercarriage is changed to the temperature change of low temperature (high temperature) from high temperature (low temperature) according to special speed
The simulation of environmental test.
After undercarriage is mounted on press machine, the flexible bag of the appropriate size frame body that will rise and fall is selected to wrap up, i.e.,
It is customizable to go out to adapt to the closed environment space of undercarriage.The air of pre-set temperature is fed through by temperature control device
In flexible bag space, the air themperature in space is set to reach the temperature value of requirement by temperature control device.The it is proposed of this scheme,
Can without change the outfit undercarriage in the case where can disposably realize static load-row of high temperature, room temperature and low temperature environment
Journey curve experiments.The flexible bag for only needing to change different size for different undercarriages can be realized.
The present invention has the advantages that undercarriage is integrally wrapped up, by temperature control device by pre-set temperature
Air is fed through in the space, so that the air themperature in space is reached the temperature value of requirement by temperature control device, is tried
Environment is tested closer to true use environment.In addition, by the present apparatus can without change the outfit undercarriage in the case where can be disposable
Realize static load-stroke curve test of high temperature, room temperature and low temperature environment, and only need to change and stretch for different undercarriages
Contracting bag specification can meet test requirements document, be conducive to lifting test efficiency, effectively shorten the lead time, easy to implement, adaptability
Extensively.
Detailed description of the invention
Fig. 1 is a kind of working state figure (mould of device for undercarriage static buffering performance test of the utility model
Quasi- hot environment).
Fig. 2 is a kind of working state figure (mould of device for undercarriage static buffering performance test of the utility model
Quasi- low temperature environment).
Specific embodiment
The utility model is described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case where, the feature in the embodiments of the present invention and embodiment can be combined with each other.For sake of convenience, hereinafter such as
There is "upper", "lower", "left", "right" printed words, only indicates consistent with the upper and lower, left and right direction of attached drawing itself, not to structure
Play restriction effect.
For the device of undercarriage static buffering performance test, including press machine 1 and connecting tooling, the connecting tooling can
Undercarriage 12 to be tested is fixed in press machine 1；It further include the flexible bag for wrapping up undercarriage to be tested, which can
With the flexible and flexible of the undercarriage damper leg to be tested；Temperature control device is communicated on the flexible bag.
The connecting tooling includes upper connecting tooling 2.1 and lower connecting tooling 2.2, and the undercarriage 12 is fixed on connection
Between tooling 2.1 and lower connecting tooling 2.2.
The flexible bag includes the first noumenon 3.1 and the second ontology 3.2 docked with the first noumenon, the first noumenon
3.1 top is fixed on connecting tooling 2.1, and the second ontology 3.2 is telescopic barrel structure, the bottom end of the second ontology 3.2
It is fixed on lower connecting tooling 2.2.
The temperature control device includes PID system controller 6, heater 7 and refrigerator 8, and the gas of heater 7 goes out
Mouthful, the gas vent of refrigerator 8 is connected to the top half of flexible bag；The gas feed of heater 7, refrigerator 8 gas
Import is connected to the lower half portion of flexible bag.
The gas feed of heater 7, the gas feed of refrigerator 8 and flexible bag pass through the first air-valve converter 9 and related
Pipeline connection, the pipeline between the first air-valve converter 9 and flexible bag are equipped with the first air-supply switch valve 13.1, and the first air-valve turns
Pipeline between parallel operation and refrigerator is equipped with the second air-supply switch valve 13.2；The gas of the gas vent of heater 7, refrigerator 8
Body outlet is connected with flexible bag by the second air-valve converter 10 and associated conduit, between the second air-valve converter 10 and heater
Pipeline be equipped with the first unidirectional air-valve 11.1, it is unidirectional that pipeline between the second air-valve converter 10 and refrigerator is equipped with second
Air-valve 11.2.Driving motor 5 is the motor for meeting refrigerating capacity power.
The top half of flexible bag and lower half portion are respectively equipped with the first temperature sensor 4.1 and second temperature sensor
4.2；Pipeline between first air-valve converter 9 and flexible bag is equipped with third temperature sensor 4.3, the second air-valve converter with
Official road between flexible bag is equipped with the 4th temperature sensor 4.4.PID system controller 6 respectively with each temperature sensor, air-valve
Converter, unidirectional air-valve, air-supply switch valve, heater and refrigerator electrical connection, realize the automatic control to temperature.
1, simulation hot environment test process is as follows:
First is that warm-up phase, for the temperature of heater 7 to be preheated to specified high temperature by room temperature, which is not normal
The hot operation stage, but preparation stage.
In warm-up phase, the first air-valve converter 9, the second air-valve converter 10 are at by PID system controller 6
Position as shown in Figure 1, while the first air-supply switch valve 13.1 is in close state.The temperature that third temperature sensor 4.3 monitors
Degree is the temperature of heater 7.
When preheating temperature reaches specified temperature, the control of PID system controller 6 first air-supply switch valve 13.1 is opened,
High temperature air enters the confined space that the first noumenon 3.1 and the second ontology 3.2 are surrounded, while PID system controller 6 passes through control
The temperature of PID instruction reconciliation heater 7 processed, until the temperature in confined space reaches required temperature.
First temperature sensor 4.1 represents the temperature in confined space, and the first temperature sensor 4.1 is sensed with second temperature
The time difference that 4.2 two sensors of device reach requirement temperature is that the confined space temperature stable time, (this time depended on
Fall the specific heat coefficient of frame).
2, simulation low temperature environment test process is as follows:
First is that the pre-cooling stage, for being freezed the temperature of refrigerator 8 by room temperature to specified low temperature, which is not normal
The low-temperature working stage, but preparation stage.
In the pre-cooling stage, the first air-valve converter 9, the second air-valve converter 10 are at by PID system controller 6
Position as shown in Figure 2, while the first air-supply switch valve 13.1 is in close state, the second air-supply switch valve 13.2 is in open shape
State.The temperature that third temperature sensor 4.3 monitors is the temperature of refrigerator 8.
When cryogenic temperature reaches specified temperature requirement, the control of PID system controller 6 first air-supply switch valve 13.1 is beaten
It opens, Cryogenic air enters the confined space that the first noumenon 3.1 and the second ontology 3.2 are surrounded, while PID system controller 6 is logical
The temperature for crossing Control PID instruction reconciliation refrigerator 8, until the temperature in confined space reaches required temperature.
First temperature sensor 4.1 represents the temperature in confined space, and the first temperature sensor 4.1 is sensed with second temperature
The time difference that 4.2 two sensors of device reach requirement temperature is that the confined space temperature stable time, (this time depended on
Fall the specific heat coefficient of frame).
3, analog temperature shock environmental test process is as follows:
Temperature shock environmental simulation principle is essentially identical with above-mentioned two situations, no longer illustrates herein, unique difference
It is the transformational relation of the first air-supply air-valve converter 9, the second air-valve converter 10.It is said by taking high temperature impact low temperature as an example
It is bright, low-temperature impact high-temperature condition no longer Ao Shu:
While making that temperature reaches specified high temperature in flexible bag according to the above method, it wouldn't be beaten by PID system controller 6
Air-supply switch valve is opened, control refrigerator 8 also reaches specified low temperature preset temperature value simultaneously.When both reaching specified height
When temperature, low temperature, the first air-supply switch valve 13.1 is first opened, when the temperature of confined space being made to reach the high temperature of requirement, then opens the
Two air-supply switch valves 13.2, the first air-supply switch valve 13.1 is still opened at this time.I.e. simulation hot environment impacts low temperature ring at this time
The process in border.
The utility model effectively optimized work flow, reduction can design risk, practicability with higher.
The content that above-described embodiment illustrates should be understood as that these embodiments are only used for being illustrated more clearly that the utility model,
Rather than limitation the scope of the utility model, after having read the utility model, those skilled in the art are practical new to this
The modification of the various equivalent forms of type each falls within the application range as defined in the appended claims.
Claims (5)
1. being used for the device of undercarriage static buffering performance test, including press machine (1) and connecting tooling, the connecting tooling can
Undercarriage to be tested is fixed in press machine (1)；It is characterized in that, further including for wrapping up the flexible of undercarriage to be tested
Bag, which can be with the flexible and flexible of the undercarriage damper leg to be tested；The flexible bag is communicated with temperature control
Mechanism.
2. the apparatus according to claim 1, which is characterized in that the connecting tooling include upper connecting tooling (2.1) and under
Connecting tooling (2.2), the undercarriage (12) are fixed between connecting tooling (2.1) and lower connecting tooling (2.2).
3. the apparatus of claim 2, which is characterized in that the flexible bag includes the first noumenon (3.1) and with first
The second ontology (3.2) of ontology docking, the top of the first noumenon (3.1) are fixed on connecting tooling (2.1), and second
Body (3.2) is telescopic barrel structure, and the bottom end of the second ontology (3.2) is fixed on lower connecting tooling (2.2).
4. the apparatus according to claim 1, which is characterized in that the temperature control device includes heater (7) and refrigeration
Device (8), the gas vent of heater (7), the gas vent of refrigerator (8) are connected to flexible bag；The gas of heater (7) into
The gas feed of mouth, refrigerator (8) is connected to flexible bag.
5. device according to claim 4, which is characterized in that the gas feed of heater (7), refrigerator (8) gas
Import is connected with flexible bag by the first air-valve converter (9) and associated conduit, between the first air-valve converter (9) and flexible bag
Pipeline be equipped with the first air-supply switch valve (13.1), pipeline between the first air-valve converter and refrigerator is equipped with second and send
Wind switch valve (13.2)；The gas vent of heater (7), the gas vent of refrigerator (8) and flexible bag are turned by the second air-valve
Parallel operation (10) and associated conduit connection, the pipeline between the second air-valve converter (10) and heater are equipped with the first unidirectional air-valve
(11.1), the pipeline between the second air-valve converter (10) and refrigerator is equipped with the second unidirectional air-valve (11.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820938805.4U CN208350354U (en) | 2018-06-19 | 2018-06-19 | Device for undercarriage static buffering performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820938805.4U CN208350354U (en) | 2018-06-19 | 2018-06-19 | Device for undercarriage static buffering performance test |
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| Publication Number | Publication Date |
|---|---|
| CN208350354U true CN208350354U (en) | 2019-01-08 |
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ID=64883793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820938805.4U Active CN208350354U (en) | 2018-06-19 | 2018-06-19 | Device for undercarriage static buffering performance test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232242A (en) * | 2020-02-28 | 2020-06-05 | 南京航空航天大学 | Aircraft landing gear buffer ultimate working temperature drop test device and test method thereof |
-
2018
- 2018-06-19 CN CN201820938805.4U patent/CN208350354U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232242A (en) * | 2020-02-28 | 2020-06-05 | 南京航空航天大学 | Aircraft landing gear buffer ultimate working temperature drop test device and test method thereof |
| CN111232242B (en) * | 2020-02-28 | 2022-10-11 | 南京航空航天大学 | Aircraft landing gear buffer ultimate working temperature drop test device and test method thereof |
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