CN107401534B - With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving - Google Patents
With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving Download PDFInfo
- Publication number
- CN107401534B CN107401534B CN201710569505.3A CN201710569505A CN107401534B CN 107401534 B CN107401534 B CN 107401534B CN 201710569505 A CN201710569505 A CN 201710569505A CN 107401534 B CN107401534 B CN 107401534B
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- pressurized strut
- isolator
- connect
- oil
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving, hydraulic oil source is connect with electrohydraulic servo valve, electrohydraulic servo valve is connect with controller, load transducer is mounted in subject pressurized strut, and composition servo feedback control mechanism is connect with controller, controller issues corresponding voltage signal according to the fatigue load spectrum of its setting to control electrohydraulic servo valve work；First isolator one end is connect by the first oil pipe with the back cavity for being tested pressurized strut, the other end is connect by third oil pipe with electrohydraulic servo valve, second isolator one end is connect by the second oil pipe with the ante-chamber for being tested pressurized strut, the other end is connect by the 4th oil pipe with electrohydraulic servo valve, primary heater is installed on the first oil pipe simultaneously, secondary heater is installed on the second oil pipe；By isolator by hydraulic oil source and electrohydraulic servo valve, it is isolated with high-temperature oil liquid, to realize that room temperature oil liquid driving high-temperature oil liquid carries out fatigue test, economical and convenient, test loading accuracy height.
Description
Technical field
The present invention relates to aircraft fatigue experimental technique field more particularly to a kind of pressurized strut heat loads with the driving of room temperature oil liquid
Joint fatigue experimental device.
Background technique
According to HB6090-86 aircraft I, the linear pressurized strut general technical specifications of II type hydraulic system, HB6647-92 aircraft
The requirement of pneumatic system pressurized strut general technical specifications, pressurized strut carry out that 100 DEG C of oil liquid temperature should be able to be born when durability test
~135 DEG C of working cycles, and can really simulate the various load being added in pressurized strut；Pressure in pressurized strut should be able to represent
Pressure under use state, and full design external loads can be born, complete defined cycle-index.Therefore, it is needed in ground experiment
A kind of testing stand that can be simulated 100 DEG C~135 DEG C oil liquid temperatures and carry out load load is designed, and since oil liquid temperature is very high,
Conventional electrohydraulic servo valve and oil sources cannot bear so high oil liquid temperature and work normally.
Summary of the invention
Technical problem solved by the invention is to provide a kind of load combined fatigue of pressurized strut heat with the driving of room temperature oil liquid
Experimental rig, to solve the disadvantage in above-mentioned background technique.
Technical problem solved by the invention is realized using following technical scheme:
With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving, including hydraulic oil source, electrohydraulic servo valve, control
Device processed, load transducer, subject pressurized strut, primary heater, secondary heater, the first oil pipe, the second oil pipe, third oil pipe,
4th oil pipe, the first isolator and the second isolator, wherein hydraulic oil source is connect with electrohydraulic servo valve, electrohydraulic servo valve and control
Device connection processed, load transducer are mounted in subject pressurized strut, and composition servo feedback control mechanism, control are connect with controller
Device issues corresponding voltage signal to control electrohydraulic servo valve work, to control quilt according to its internal fatigue load spectrum being arranged
Examination pressurized strut is stretched；Corresponding load signal is fed back to controller by load transducer, to guarantee that subject pressurized strut has
Corresponding load；First isolator and the second isolator are arranged on the oil circuit between subject pressurized strut and electrohydraulic servo valve, and
First isolator one end is connect by the first oil pipe with the back cavity for being tested pressurized strut, and the other end passes through third oil pipe and electro-hydraulic servo
Valve connection, second isolator one end by the second oil pipe be tested pressurized strut ante-chamber connect, the other end pass through the 4th oil pipe and
Electrohydraulic servo valve connection, while primary heater being installed on the first oil pipe, secondary heater is installed on the second oil pipe,
During the test, primary heater is used to heat the oil liquid in the first oil pipe, and secondary heater is for heating in the second oil pipe
Oil liquid, can reach 100 DEG C -135 DEG C according to different test requirements document oil liquid temperatures.
In the present invention, oily filter is provided on the connected pipes of hydraulic oil source and electrohydraulic servo valve.
In the present invention, it is provided with the first temperature sensor on the first oil pipe, second temperature biography is provided on the second oil pipe
Sensor, to guarantee to enter the ante-chamber of subject pressurized strut and the oil liquid temperature of back cavity.
In the present invention, the first isolator is identical as the second spacer structures, the first isolator include guide rod, outer wall,
Ante-chamber, thermal insulation board and back cavity, guide rod are connect with thermal insulation board, and thermal insulation board is arranged between ante-chamber and back cavity, before outer wall is wrapped in
Outside chamber and back cavity, guide rod is for guaranteeing that thermal insulation board smooth motion, outer wall play sealing and supporting function.
In the present invention, the first isolator back cavity is connect by the first oil pipe with subject pressurized strut, the first isolator ante-chamber
It is connect by third oil pipe with electrohydraulic servo valve.
In the present invention, the second isolator back cavity is connect by the second oil pipe with subject pressurized strut, the second isolator ante-chamber
It is connect by the 4th oil pipe with electrohydraulic servo valve.
In the present invention, it is moved back and forth due to being tested pressurized strut during test, the first oil pipe high-temperature oil liquid enters first
Isolator back cavity is separated by thermal insulation board in the first isolator, and the first oil pipe high-temperature oil liquid not can enter ante-chamber, such ante-chamber
Oil liquid will not be mixed with the oil liquid of back cavity, with the temperature remains within the normal range；Thermal insulation board only separated by high-temperature oil liquid and room temperature oil liquid, is not realized also
The pressure transmitting of chamber before and after isolator, to guarantee that electrohydraulic servo valve energy normal control is tested pressurized strut requested test.
The utility model has the advantages that the present invention heats oil temperature analog temperature by heater, then by force servo feedback analog load, and
It is provided with isolator on oil circuit between subject pressurized strut and electrohydraulic servo valve, thus by hydraulic oil source and electrohydraulic servo valve,
It is isolated with high-temperature oil liquid, to realize that room temperature oil liquid driving high-temperature oil liquid carries out fatigue test, economical and convenient tests loading accuracy
Height, it is practical.
Detailed description of the invention
Fig. 1 is the scheme of installation of presently preferred embodiments of the present invention.
Fig. 2 is the first spacer structures schematic diagram in presently preferred embodiments of the present invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to Fig. 1~2 with the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving, including hydraulic oil source 1,
Oily filter 2, electrohydraulic servo valve 3, voltage signal 4, controller 5, load signal 6, load transducer 7, the 8, first temperature of subject pressurized strut
Spend sensor 9, second temperature sensor 10, primary heater 11, secondary heater 12, the first oil pipe 13, the second oil pipe 14, the
Three oil pipes 15, the 4th oil pipe 16, the first isolator 17, guide rod 17a, outer wall 17b, ante-chamber 17c, thermal insulation board 17d, back cavity 17e
And second isolator 18, oil pressure needed for hydraulic oil source 1 provides test, oily filter 2 are arranged in hydraulic oil source 1 and electrohydraulic servo valve 3
Connected pipes on, electrohydraulic servo valve 3 is connect with controller 5, and controller 5 issues phase according to its internal fatigue load spectrum being arranged
The voltage signal 4 answered is stretched with controlling the work of electrohydraulic servo valve 3 to control subject pressurized strut 8；Meanwhile load sensing
Corresponding load signal 6 is fed back to controller 5 by device 7, to guarantee that subject pressurized strut 8 has corresponding load；In test process
In, primary heater 11 is used to heat the oil liquid in the first oil pipe 13, and secondary heater 12 is for heating in the second oil pipe 14
Oil liquid can reach 100 DEG C -135 DEG C according to different test requirements document oil liquid temperatures, and the first temperature biography is provided on the first oil pipe 13
Sensor 9 is provided with second temperature sensor 10 on second oil pipe 14, to guarantee the ante-chamber for entering subject pressurized strut 8 and back cavity
Oil liquid temperature；Due to test during subject pressurized strut 8 move back and forth, wherein 13 high-temperature oil liquid of the first oil pipe enter first every
Back cavity 17e from device 17 is separated in the first isolator 17 by thermal insulation board 17d, before 13 high-temperature oil liquid of the first oil pipe not can enter
The oil liquid of chamber 17c, such ante-chamber 17c will not be mixed with the oil liquid of back cavity 17e, and with the temperature remains within the normal range, ante-chamber 17c passes through third oil pipe
15 connect with electrohydraulic servo valve 3, guide rod 17a are provided on the first isolator 17, guide rod 17a is for guaranteeing thermal insulation board 17d
Smooth motion, outer wall 17b play sealing and supporting function；The ante-chamber of second isolator 18 passes through the 4th oil pipe 16 and electrohydraulic servo valve
3 connections, the second isolator 18 are identical as the structure of the first isolator 17 and operation logic；Therefore, electrohydraulic servo valve 3 and hydraulic oil
Source 1 is only needed using conventional electrohydraulic servo valve and oil sources, and pressure passes to thermal insulation board 17d by the oil liquid of ante-chamber 17d, then passes
The oil liquid of back cavity is passed, and then guarantees the transmitting of pressure, to guarantee that electrohydraulic servo valve 3 can drive subject pressurized strut 8 according to corresponding
Loading spectrum carry out fatigue test；Wherein the conversion of the ante-chamber oil pressure and back cavity oil pressure of the second isolator 18 and the first isolator 17 is public
Formula is as follows:
P1*(A1-A2)=P2*A2；
P1For ante-chamber oil pressure；
P2For back cavity oil pressure；
A1For the cross-sectional area of back cavity；
A2 is the cross-sectional area of guide rod.
In the present embodiment, since primary heater 11 heats the oil liquid in the first oil pipe 13, secondary heater 12 is heated
Oil liquid in second oil pipe 14 causes general electrohydraulic servo valve 3 that cannot bear, therefore third oil pipe 15, the 4th oil pipe 16, the is arranged
High-temperature oil liquid is isolated with electrohydraulic servo valve 3, hydraulic oil source 1 for one isolator 17 and the second isolator 18, thus using routine
Hydraulic oil source 1 and electrohydraulic servo valve 3 can be driven subject pressurized strut 8 and work.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. with the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving, including hydraulic oil source, electrohydraulic servo valve, control
Device, load transducer, subject pressurized strut, primary heater, secondary heater, the first oil pipe, the second oil pipe, third oil pipe, the
Four oil pipes, the first isolator and the second isolator, which is characterized in that hydraulic oil source is connect with electrohydraulic servo valve, electrohydraulic servo valve
It being connect with controller, load transducer is mounted in subject pressurized strut, and composition servo feedback control mechanism is connect with controller,
Controller issues corresponding voltage signal to control electrohydraulic servo valve work, to control according to its internal fatigue load spectrum being arranged
System subject pressurized strut is stretched；Corresponding load signal is fed back to controller by load transducer, to guarantee to be tested pressurized strut
With corresponding load；The oil circuit between subject pressurized strut and electrohydraulic servo valve is arranged in first isolator and the second isolator
On, and first isolator one end is connect by the first oil pipe with the back cavity for being tested pressurized strut, the other end passes through third oil pipe and electricity
Hydraulic servo connection, second isolator one end are connect by the second oil pipe with the ante-chamber for being tested pressurized strut, and the other end passes through the 4th
Oil pipe is connect with electrohydraulic servo valve, while being equipped with primary heater on the first oil pipe, is equipped with second on the second oil pipe
Heater.
2. the pressurized strut heat load combined fatigue experimental device according to claim 1 with the driving of room temperature oil liquid, feature exist
In being provided with the first temperature sensor on the first oil pipe, be provided with second temperature sensor on the second oil pipe.
3. the pressurized strut heat load combined fatigue experimental device according to claim 1 with the driving of room temperature oil liquid, feature exist
In, the first isolator is identical as the second spacer structures, the first isolator include guide rod, outer wall, ante-chamber, thermal insulation board and after
Chamber, guide rod are connect with thermal insulation board, and thermal insulation board is arranged between ante-chamber and back cavity, and outer wall is wrapped in outside ante-chamber and back cavity.
4. the pressurized strut heat load combined fatigue experimental device according to claim 3 with the driving of room temperature oil liquid, feature exist
In the first isolator back cavity is connect by the first oil pipe with subject pressurized strut, and the first isolator ante-chamber passes through third oil pipe and electricity
Hydraulic servo connection.
5. the pressurized strut heat load combined fatigue experimental device according to claim 3 with the driving of room temperature oil liquid, feature exist
In the second isolator back cavity is connect by the second oil pipe with subject pressurized strut, and the second isolator ante-chamber passes through the 4th oil pipe and electricity
Hydraulic servo connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569505.3A CN107401534B (en) | 2017-07-13 | 2017-07-13 | With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569505.3A CN107401534B (en) | 2017-07-13 | 2017-07-13 | With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107401534A CN107401534A (en) | 2017-11-28 |
| CN107401534B true CN107401534B (en) | 2019-03-01 |
Family
ID=60404611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710569505.3A Active CN107401534B (en) | 2017-07-13 | 2017-07-13 | With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107401534B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075793A (en) * | 2019-12-16 | 2020-04-28 | 湖南联诚轨道装备有限公司 | Hydraulic cylinder high-temperature reciprocating test device and method |
| CN112208789B (en) * | 2020-10-10 | 2022-12-23 | 江西洪都航空工业集团有限责任公司 | Hydraulic pulse sine wave test device and method for airplane |
| CN114509248B (en) * | 2021-12-31 | 2024-09-06 | 天津航天瑞莱科技有限公司 | Aircraft landing gear actuator cylinder test system |
| CN114636538B (en) * | 2022-04-06 | 2024-03-08 | 苏州东菱振动试验仪器有限公司 | Test box and vibration test system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5054314A (en) * | 1989-08-29 | 1991-10-08 | Montupet | Mechanical fatigue test bench for engine cylinder heads |
| CN102645340A (en) * | 2012-04-10 | 2012-08-22 | 浙江大学 | Automobile radiator pressure pulse test platform |
| CN102798573A (en) * | 2012-08-16 | 2012-11-28 | 浙江大学 | Cryogenic environment material mechanical performance detection test device |
| CN103410811A (en) * | 2013-08-22 | 2013-11-27 | 安徽合力股份有限公司 | Energy recovery type hydraulic system for fatigue test of hoisting system |
| CN103939421A (en) * | 2014-03-10 | 2014-07-23 | 北京工业大学 | Fatigue test method and device used for hydraulic cylinder |
| CN203730462U (en) * | 2014-01-03 | 2014-07-23 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature pulsating pressure endurance test device of rubber pipe |
| CN204202886U (en) * | 2014-11-25 | 2015-03-11 | 湖北唯思凌科装备制造有限公司 | A kind of automobile steering device torture test lathe |
| CN105298990A (en) * | 2015-11-17 | 2016-02-03 | 江西洪都航空工业集团有限责任公司 | Hydraulic lock actuator cylinder high-and-low temperature endurance test system |
| CN105673621A (en) * | 2016-03-01 | 2016-06-15 | 浙江大学 | Multi-working-condition comprehensive simulation test system for reciprocating seal of aviation actuator |
| CN106323607A (en) * | 2016-07-29 | 2017-01-11 | 中国北方发动机研究所(天津) | Engine cylinder cap heat machine fatigue testing device and method |
| CN106525617A (en) * | 2016-11-30 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Pressurizing fatigue test device for large-capacity cavity or semi-enclosed cavity |
| CN106640847A (en) * | 2017-03-07 | 2017-05-10 | 合肥通用机械研究院 | Energy accumulator fatigue test device and test method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3688610B2 (en) * | 2001-09-05 | 2005-08-31 | 酒井 達雄 | Multiple fatigue tester system |
| US6755113B2 (en) * | 2002-07-30 | 2004-06-29 | Ha Wse Company Limited | Accumulated semi-active hydraulic damper |
-
2017
- 2017-07-13 CN CN201710569505.3A patent/CN107401534B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5054314A (en) * | 1989-08-29 | 1991-10-08 | Montupet | Mechanical fatigue test bench for engine cylinder heads |
| CN102645340A (en) * | 2012-04-10 | 2012-08-22 | 浙江大学 | Automobile radiator pressure pulse test platform |
| CN102798573A (en) * | 2012-08-16 | 2012-11-28 | 浙江大学 | Cryogenic environment material mechanical performance detection test device |
| CN103410811A (en) * | 2013-08-22 | 2013-11-27 | 安徽合力股份有限公司 | Energy recovery type hydraulic system for fatigue test of hoisting system |
| CN203730462U (en) * | 2014-01-03 | 2014-07-23 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature pulsating pressure endurance test device of rubber pipe |
| CN103939421A (en) * | 2014-03-10 | 2014-07-23 | 北京工业大学 | Fatigue test method and device used for hydraulic cylinder |
| CN204202886U (en) * | 2014-11-25 | 2015-03-11 | 湖北唯思凌科装备制造有限公司 | A kind of automobile steering device torture test lathe |
| CN105298990A (en) * | 2015-11-17 | 2016-02-03 | 江西洪都航空工业集团有限责任公司 | Hydraulic lock actuator cylinder high-and-low temperature endurance test system |
| CN105673621A (en) * | 2016-03-01 | 2016-06-15 | 浙江大学 | Multi-working-condition comprehensive simulation test system for reciprocating seal of aviation actuator |
| CN106323607A (en) * | 2016-07-29 | 2017-01-11 | 中国北方发动机研究所(天津) | Engine cylinder cap heat machine fatigue testing device and method |
| CN106525617A (en) * | 2016-11-30 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Pressurizing fatigue test device for large-capacity cavity or semi-enclosed cavity |
| CN106640847A (en) * | 2017-03-07 | 2017-05-10 | 合肥通用机械研究院 | Energy accumulator fatigue test device and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107401534A (en) | 2017-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107401534B (en) | With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving | |
| CN103775442B (en) | Hydraulic cylinder test bed pump control Power Recovery hydraulic control system | |
| CN102621005B (en) | Rock soil rheological test equipment | |
| CN104236923B (en) | Multifunctional durability test device for testing durability of automobile brake parts | |
| CN105910940A (en) | Shear wall fire exposure testing device under vertical load effect | |
| CN210375687U (en) | Detection apparatus for simulation deep sea environment reciprocating motion sealing washer sealing performance | |
| CN103234835A (en) | Method and system for realizing interaction of high-temperature steam oxidation and high-temperature creep | |
| CN204302086U (en) | Supercritical water oxidation environmentally conscious materials fatigue property test device | |
| CN107559266A (en) | A kind of servo-control mechanism device and synchronous control method in parallel | |
| CN204314001U (en) | Pipe flange stress monitoring system under Moments effect | |
| CN203730462U (en) | High-temperature pulsating pressure endurance test device of rubber pipe | |
| CN204027813U (en) | Electric device for valve life test rack structure | |
| CN206348142U (en) | Double-wall pipe elastic support dynamic fatigue test device | |
| CN103499440B (en) | The multifunctional testing of horizontal sleeve compensator loads detection machine | |
| CN100437078C (en) | Experimental table for heating power coupling | |
| CN106593976B (en) | Drilling machine hydraulic wireline winch testing stand | |
| CN203069459U (en) | Insulator internal pressure testing device | |
| CN102840972B (en) | Hydraulic loading device for mechanical part test table | |
| CN203595603U (en) | Multifunctional test loading detection machine of horizontal sleeve compensator | |
| CN203587454U (en) | Vertical multi-cylinder loading testing machine | |
| CN206208910U (en) | A kind of pressure volume controller | |
| CN206410857U (en) | Hot and cold water circulation testing machine | |
| CN101598648B (en) | Double space material cold-heat simulation experiment device | |
| CN201527325U (en) | High-efficiency testing machine of sensor | |
| CN206223426U (en) | A kind of spring hot wire-CVD experimental rig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |