CN111855200A - Transmission shaft comprehensive test bed - Google Patents
Transmission shaft comprehensive test bed Download PDFInfo
- Publication number
- CN111855200A CN111855200A CN202010868489.XA CN202010868489A CN111855200A CN 111855200 A CN111855200 A CN 111855200A CN 202010868489 A CN202010868489 A CN 202010868489A CN 111855200 A CN111855200 A CN 111855200A
- Authority
- CN
- China
- Prior art keywords
- speed
- transmission shaft
- test
- low
- transmission case
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 151
- 238000012360 testing method Methods 0.000 title claims abstract description 109
- 230000008878 coupling Effects 0.000 claims abstract description 45
- 238000010168 coupling process Methods 0.000 claims abstract description 45
- 238000005859 coupling reaction Methods 0.000 claims abstract description 45
- 230000005571 horizontal transmission Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 10
- 230000001360 synchronised effect Effects 0.000 claims abstract description 10
- 230000001050 lubricating effect Effects 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 12
- 230000001133 acceleration Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a transmission shaft comprehensive test bed which comprises a test bed fixing combination part and a test piece test replacement combination part, wherein the test bed fixing combination part comprises a test bed mounting flat plate, a driving variable frequency motor, a speed-up low-speed transmission case, a speed-down low-speed transmission case, a diaphragm coupling, a process transmission shaft, an electric power synchronous torque loader, a lubricating system, a PLC (programmable logic controller) electric control system and a dynamic data acquisition system; the test piece test replacement combination part is one of a power transmission shaft test combination system, a tail horizontal transmission shaft test combination system and a tail inclined transmission shaft test combination system. The comprehensive test bed for the transmission shaft can respectively perform single-item comprehensive tests on the power transmission shaft, the tail horizontal transmission shaft and the tail inclined transmission shaft by replacing the test combination systems of all shafts, has good universality and can save the use cost.
Description
Technical Field
The invention relates to a helicopter transmission shaft comprehensive test bed.
Background
The helicopter transmission system is generally composed of a speed reducer and a transmission shaft system, and is used for transmitting the power and the rotating speed output by an engine to a rotor wing, a tail rotor and an accessory system of the helicopter according to requirements. The transmission shafts and couplings are needed to connect the engine and the main speed reducer, the main speed reducer and the middle and tail speed reducers and the accessories to transmit power. The transmission shaft can be divided into a power transmission shaft, a tail horizontal transmission shaft and a tail inclined transmission shaft according to the purpose. The general transmission shaft has large load and complex use conditions, and has high requirements on the balanced vibration characteristic and the reliability of the shaft. Any damage to the transmission shaft of a helicopter in flight will force the flight mission to be interrupted if the transmission shaft is damaged, and serious accidents will be caused if the transmission shaft is damaged. Therefore, the transmission shaft of the modern helicopter is required to be subjected to long-term bench test, fatigue test and flight verification test during development so as to obtain comprehensive use data about service life, reliability and the like.
Disclosure of Invention
The invention aims to provide a transmission shaft comprehensive test bed which can be used for respectively carrying out single-shaft performance comprehensive tests on a helicopter power transmission shaft, a tail horizontal transmission shaft and a tail inclined transmission shaft.
The technical scheme adopted by the invention is as follows: the transmission shaft comprehensive test bed comprises a test bed fixing combination part and a test piece test replacement combination part, wherein the test bed fixing combination part comprises a test bed mounting flat plate, a driving variable frequency motor, a speed-raising low-speed transmission case, a speed-reducing low-speed transmission case, a diaphragm coupling, a process transmission shaft, an electric power synchronous torque loader, a lubricating system, a PLC (programmable logic controller) electric control system and a dynamic data acquisition system;
the test bed mounting flat plate is a whole transmission shaft comprehensive test bed mounting reference part;
the driving variable frequency motor is connected with the input end of the speed-up low-speed transmission case through a diaphragm coupling, and a rotating speed encoder and a temperature sensor are arranged in the driving variable frequency motor;
the output end of the acceleration low-speed transmission box is connected with the test piece test replacement combination part, a vibration acceleration sensor is arranged at the input and output bearing of the acceleration low-speed transmission box, and a rotating speed sensor and a temperature sensor are arranged at the bearing;
the input end of the speed reduction low-speed transmission box is connected with the test piece test replacement combination part, and the output end of the speed reduction low-speed transmission box is connected with the input end of the process transmission shaft through the diaphragm coupling;
the output end of the process transmission shaft is connected with the electric synchronous torque loader through a diaphragm coupler;
the output end of the electric power synchronous torque loader is connected with the loading input end of the speed-up low-speed transmission case through a diaphragm coupler to form a power closed system;
the lubricating system is used for supplying lubricating oil to the friction part of the transmission shaft comprehensive test bed;
the PLC electric control system is used for controlling the operation of each part of the transmission shaft comprehensive test bed;
the dynamic data acquisition system is used for acquiring operation test data in real time;
the test piece test replacement combination part is one of a power transmission shaft test combination system, a tail horizontal transmission shaft test combination system and a tail inclined transmission shaft test combination system.
Furthermore, the power transmission shaft test combination system comprises a speed-up high-speed transmission box, a torque and rotation speed sensor, a power transmission shaft, a speed-down high-speed transmission box and a high-speed damping supporting seat; the high-speed damping bearing seat and the film disc coupling are arranged at two ends of the power transmission shaft, the input end of the power transmission shaft is connected with the output end of the torque and speed sensor through the film disc coupling, the input end of the torque and speed sensor is connected with the high-speed end of the speed-raising high-speed transmission case through the film disc coupling, the low-speed end of the speed-raising high-speed transmission case is connected with the output end of the speed-raising low-speed transmission case through the film disc coupling, the output end of the power transmission shaft is connected with the high-speed end of the speed-reducing high-speed transmission case through the film disc coupling, and.
Furthermore, the experimental combined system of tail horizontal transmission shaft includes torque speed sensor, tail horizontal transmission shaft, and tail horizontal transmission shaft input is connected with torque speed sensor output through the diaphragm coupling, and torque speed sensor input is connected with the output of speed-up low-speed transmission case through the diaphragm coupling, and tail horizontal transmission shaft output is connected with the input of speed-down low-speed transmission case through the diaphragm coupling.
Furthermore, the tail oblique transmission shaft test combination system comprises a torque rotating speed sensor and a tail oblique transmission shaft, wherein a high-speed damping supporting seat and a diaphragm coupling are arranged at two ends of the tail oblique transmission shaft, the input end of the tail oblique transmission shaft is connected with the output end of the torque rotating speed sensor through the diaphragm coupling, the input end of the torque rotating speed sensor is connected with the output end of the speed-up low-speed transmission box through the diaphragm coupling, and the output end of the tail oblique transmission shaft is connected with the input end of the speed-down low-speed transmission box.
Furthermore, the test bed mounting flat plate is fixed on a mounting base, the mounting base is integrally cast by adopting reinforced concrete, shockproof ditches are formed around the mounting base, and shock-absorbing materials are filled in the shockproof ditches.
Furthermore, the fixed combination part of the test bed further comprises a safety shield and an air cooling device, the safety shield comprises a high-speed region protective shield and a low-speed region safety shield, the high-speed region protective shield is arranged between the output end of the speed-raising low-speed transmission case and the input end of the speed-reducing low-speed transmission case, and the low-speed region safety shield is arranged between the output end of the speed-reducing low-speed transmission case and the loading input end of the speed-raising low-speed transmission case; and the air cooling device supplies air to the high-speed area protective cover through an air supply pipe of the air cooler for cooling.
The comprehensive test bed for the transmission shaft is divided into a test bed fixing combination part and a test piece test replacement combination part, wherein the test bed fixing combination part is a fixing combination part, and the test piece test replacement combination part is a test replacement part.
Drawings
Figure 1 is a schematic diagram of the overall scheme of the present invention.
Fig. 2 is a scheme schematic diagram of the comprehensive experiment table of the power transmission shaft.
Fig. 3 is a schematic diagram of a scheme of a comprehensive experiment table of the tail horizontal transmission shaft.
Fig. 4 is a scheme schematic diagram of a tail oblique transmission shaft comprehensive experiment table.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
As shown in fig. 1-4, the transmission shaft comprehensive test bed of the present embodiment includes a test bed fixing combination part and a test piece test replacement combination part, wherein the test bed fixing combination part includes a test bed mounting plate, a driving variable frequency motor 1, a speed-up low-speed transmission case 2, a speed-down low-speed transmission case 3, a diaphragm coupling 4, a process transmission shaft 5, an electric synchronous torque loader 6, a lubricating system, a PLC electric control system, and a dynamic data acquisition system;
the test bed mounting flat plate is a whole transmission shaft comprehensive test bed mounting reference part;
the driving variable frequency motor 1 is connected with the input end of the speed-up low-speed transmission case 2 through a diaphragm coupling 4, and a rotating speed encoder and a temperature sensor are arranged in the driving variable frequency motor 1;
the output end of the acceleration low-speed transmission box 2 is connected with the test piece test replacement combination part, a vibration acceleration sensor is arranged at the bearing position of the input and output of the acceleration low-speed transmission box 2, and a rotating speed sensor and a temperature sensor are arranged at the bearing position;
the input end of the speed reduction low-speed transmission case 3 is connected with the test piece test replacement combination part, and the output end of the speed reduction low-speed transmission case is connected with the input end of the process transmission shaft 5 through the diaphragm coupling 4;
the output end of the process transmission shaft 5 is connected with the electric synchronous torque loader 6 through the diaphragm coupler 4;
the output end of the electric power synchronous torque loader 6 is connected with the loading input end of the speed-up low-speed transmission case 2 through a diaphragm coupling 4 to form a power closed system;
the lubricating system is used for supplying lubricating oil to the friction part of the transmission shaft comprehensive test bed;
the PLC electric control system is used for controlling the operation of each part of the transmission shaft comprehensive test bed;
the dynamic data acquisition system is used for acquiring operation test data in real time;
the test piece test replacement combination part is one of a power transmission shaft test combination system, a tail horizontal transmission shaft test combination system and a tail inclined transmission shaft test combination system.
The power transmission shaft test combination system comprises a speed-up high-speed transmission case 7, a torque and rotation speed sensor 8, a power transmission shaft 9, a speed-down high-speed transmission case 10 and a high-speed damping supporting seat; the high-speed damping bearing seat and the film disc coupling are arranged at two ends of the power transmission shaft 9, the input end of the power transmission shaft 9 is connected with the output end of the torque and speed sensor 8 through the film disc coupling, the input end of the torque and speed sensor 8 is connected with the high-speed end of the speed-raising high-speed transmission case 7 through the film disc coupling, the low-speed end of the speed-raising high-speed transmission case 7 is connected with the output end of the speed-raising low-speed transmission case 2 through the film coupling 4, the output end of the power transmission shaft 9 is connected with the high-speed end of the speed-reducing high-speed transmission case 10 through the film disc coupling, and the output end of the.
The experimental combined system of tail horizontal transmission shaft includes torque speed sensor 8, tail horizontal transmission shaft 11, and 11 inputs of tail horizontal transmission shaft are connected with 8 outputs of torque speed sensor through diaphragm coupling 4, and 8 inputs of torque speed sensor are connected with 2 outputs of high-speed and low-speed transmission case through diaphragm coupling 4, and 11 outputs of tail horizontal transmission shaft are connected with 3 inputs of low-speed transmission case through diaphragm coupling 4.
The tail oblique transmission shaft test combination system comprises a torque rotating speed sensor 8 and a tail oblique transmission shaft 12, wherein a high-speed damping supporting seat and a diaphragm coupling 4 are arranged at two ends of the tail oblique transmission shaft 12, the input end of the tail oblique transmission shaft 12 is connected with the output end of the torque rotating speed sensor 8 through the diaphragm coupling 4, the input end of the torque rotating speed sensor 8 is connected with the output end of the speed-increasing low-speed transmission case 2 through the diaphragm coupling 4, and the output end of the tail oblique transmission shaft 12 is connected with the input end of the speed-reducing low-speed transmission case 3.
The test bed mounting flat plate is fixed on the mounting base, the mounting base is integrally cast by adopting reinforced concrete, the periphery of the mounting base is provided with shockproof ditches, and the shockproof ditches are filled with damping materials to form a shockproof and damping system of the test bed.
The test bench fixing combination part also comprises a safety shield and an air cooling device, wherein the safety shield comprises a high-speed region protective shield and a low-speed region safety shield, the high-speed region protective shield is arranged between the output end of the speed-up low-speed transmission case 2 and the input end of the speed-down low-speed transmission case 3, and the low-speed region safety shield is arranged between the output end of the speed-down low-speed transmission case 3 and the loading input end of the speed-up low-speed transmission case 2; and the air cooling device supplies air to the high-speed area protective cover through an air supply pipe of the air cooler for cooling.
Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (6)
1. Transmission shaft combined test platform, its characterized in that: the test bed comprises a test bed fixing combination part and a test piece test replacement combination part, wherein the test bed fixing combination part comprises a test bed mounting flat plate, a driving variable frequency motor, a speed-up low-speed transmission case, a speed-down low-speed transmission case, a diaphragm coupling, a process transmission shaft, an electric power synchronous torque loader, a lubricating system, a PLC (programmable logic controller) electric control system and a dynamic data acquisition system;
the test bed mounting flat plate is a whole transmission shaft comprehensive test bed mounting reference part;
the driving variable frequency motor is connected with the input end of the speed-up low-speed transmission case through a diaphragm coupling, and a rotating speed encoder and a temperature sensor are arranged in the driving variable frequency motor;
the output end of the acceleration low-speed transmission box is connected with the test piece test replacement combination part, a vibration acceleration sensor is arranged at the input and output bearing of the acceleration low-speed transmission box, and a rotating speed sensor and a temperature sensor are arranged at the bearing;
the input end of the speed reduction low-speed transmission box is connected with the test piece test replacement combination part, and the output end of the speed reduction low-speed transmission box is connected with the input end of the process transmission shaft through the diaphragm coupling;
the output end of the process transmission shaft is connected with the electric synchronous torque loader through a diaphragm coupler;
the output end of the electric power synchronous torque loader is connected with the loading input end of the speed-up low-speed transmission case through a diaphragm coupler to form a power closed system;
the lubricating system is used for supplying lubricating oil to the friction part of the transmission shaft comprehensive test bed;
the PLC electric control system is used for controlling the operation of each part of the transmission shaft comprehensive test bed;
the dynamic data acquisition system is used for acquiring operation test data in real time;
the test piece test replacement combination part is one of a power transmission shaft test combination system, a tail horizontal transmission shaft test combination system and a tail inclined transmission shaft test combination system.
2. The drive shaft comprehensive test stand according to claim 1, characterized in that: the power transmission shaft test combination system comprises a speed-up high-speed transmission case, a torque and rotating speed sensor, a power transmission shaft, a speed-down high-speed transmission case and a high-speed damping supporting seat; the high-speed damping bearing seat and the film disc coupling are arranged at two ends of the power transmission shaft, the input end of the power transmission shaft is connected with the output end of the torque and speed sensor through the film disc coupling, the input end of the torque and speed sensor is connected with the high-speed end of the speed-raising high-speed transmission case through the film disc coupling, the low-speed end of the speed-raising high-speed transmission case is connected with the output end of the speed-raising low-speed transmission case through the film disc coupling, the output end of the power transmission shaft is connected with the high-speed end of the speed-reducing high-speed transmission case through the film disc coupling, and.
3. The drive shaft comprehensive test stand according to claim 1, characterized in that: the tail horizontal transmission shaft test combination system comprises a torque rotating speed sensor and a tail horizontal transmission shaft, wherein the input end of the tail horizontal transmission shaft is connected with the output end of the torque rotating speed sensor through a diaphragm coupling, the input end of the torque rotating speed sensor is connected with the output end of a speed-increasing low-speed transmission case through the diaphragm coupling, and the output end of the tail horizontal transmission shaft is connected with the input end of a speed-reducing low-speed transmission case through the diaphragm coupling.
4. The drive shaft comprehensive test stand according to claim 1, characterized in that: the tail oblique transmission shaft test combination system comprises a torque rotating speed sensor and a tail oblique transmission shaft, wherein a high-speed damping supporting seat and a diaphragm coupling are arranged at two ends of the tail oblique transmission shaft, the input end of the tail oblique transmission shaft is connected with the output end of the torque rotating speed sensor through the diaphragm coupling, the input end of the torque rotating speed sensor is connected with the output end of the speed-up low-speed transmission case through the diaphragm coupling, and the output end of the tail oblique transmission shaft is connected with the input end of the speed-down low-speed.
5. The drive shaft all-in-one test stand according to any one of claims 1 to 4, characterized in that: the test bed mounting flat plate is fixed on the mounting base, the mounting base is integrally cast by adopting reinforced concrete, the periphery of the mounting base is provided with shockproof ditches, and the shockproof ditches are filled with damping materials.
6. The drive shaft all-in-one test stand according to any one of claims 1 to 4, characterized in that: the test bench fixing combination part also comprises a safety shield and an air cooling device, wherein the safety shield comprises a high-speed region protective shield and a low-speed region safety shield, the high-speed region protective shield is arranged between the output end of the speed-up low-speed transmission case and the input end of the speed-down low-speed transmission case, and the low-speed region safety shield is arranged between the output end of the speed-down low-speed transmission case and the loading input end of the speed-up low-speed transmission case; and the air cooling device supplies air to the high-speed area protective cover through an air supply pipe of the air cooler for cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868489.XA CN111855200B (en) | 2020-08-26 | 2020-08-26 | Helicopter transmission shaft comprehensive test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868489.XA CN111855200B (en) | 2020-08-26 | 2020-08-26 | Helicopter transmission shaft comprehensive test bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111855200A true CN111855200A (en) | 2020-10-30 |
| CN111855200B CN111855200B (en) | 2024-05-28 |
Family
ID=72967143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010868489.XA Active CN111855200B (en) | 2020-08-26 | 2020-08-26 | Helicopter transmission shaft comprehensive test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111855200B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593906A (en) * | 2022-03-25 | 2022-06-07 | 无锡市宏源弹性器材有限公司 | Reliability test equipment for shafting end face sealing device for ship |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0739815A1 (en) * | 1995-04-27 | 1996-10-30 | Advanced Technology Institute of Commuter-Helicopter, Ltd. | Helicopter transmission including a traction roller CVT |
| US20020081047A1 (en) * | 2000-12-12 | 2002-06-27 | Elio Zoppitelli | Bearing assembly for a helicopter rear transmission shaft |
| CN102774509A (en) * | 2012-06-28 | 2012-11-14 | 南京航空航天大学 | Performance test bench for reaction torque device of helicopter |
| KR20130064852A (en) * | 2011-12-09 | 2013-06-19 | 한국기계연구원 | Lifetime and performance testing apparatus of high speed and high torque for energy saving |
| CN106678202A (en) * | 2016-12-30 | 2017-05-17 | 中航维拓（天津）科技有限公司 | Low-rotating-speed and large-torque clutch special for helicopter |
-
2020
- 2020-08-26 CN CN202010868489.XA patent/CN111855200B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0739815A1 (en) * | 1995-04-27 | 1996-10-30 | Advanced Technology Institute of Commuter-Helicopter, Ltd. | Helicopter transmission including a traction roller CVT |
| US20020081047A1 (en) * | 2000-12-12 | 2002-06-27 | Elio Zoppitelli | Bearing assembly for a helicopter rear transmission shaft |
| KR20130064852A (en) * | 2011-12-09 | 2013-06-19 | 한국기계연구원 | Lifetime and performance testing apparatus of high speed and high torque for energy saving |
| CN102774509A (en) * | 2012-06-28 | 2012-11-14 | 南京航空航天大学 | Performance test bench for reaction torque device of helicopter |
| CN106678202A (en) * | 2016-12-30 | 2017-05-17 | 中航维拓（天津）科技有限公司 | Low-rotating-speed and large-torque clutch special for helicopter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593906A (en) * | 2022-03-25 | 2022-06-07 | 无锡市宏源弹性器材有限公司 | Reliability test equipment for shafting end face sealing device for ship |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111855200B (en) | 2024-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201083606Y (en) | Front drive transmission-gear box endurance test bench | |
| CN113310701B (en) | Complete machine tester for mechanical system of military turbofan engine | |
| KR102433172B1 (en) | Removable pack for reactivating a turboshaft engine, architecture for a multi-engine system for propelling a helicopter, provided with such a pack, and corresponding helicopter | |
| EP3480938A1 (en) | Resonance vibration control method and system | |
| CN104034529A (en) | Dustproof performance simulation test machine for automobile hub bearing unit | |
| US20190368550A1 (en) | Coupling for power generation system | |
| CN111855200A (en) | Transmission shaft comprehensive test bed | |
| KR20130086340A (en) | A non-lubricated architecture for a turboshaft engine | |
| CN212228382U (en) | Transmission shaft comprehensive test bed | |
| CN203488665U (en) | Belt-conveyor soft starting speed-adjusting device capable of on-load power isolation | |
| CN219977767U (en) | Spliced railway bearing fault diagnosis test bed | |
| CN111678693A (en) | Transmission shaft comprehensive test bed | |
| CN116242608A (en) | Bearing test device | |
| CN201837487U (en) | Motive power flexible transmission torque detection testing device | |
| CN103671729A (en) | Gearing-down system for belt conveyor | |
| CN112268036B (en) | Device for simulating starting load of helicopter APU | |
| CN206208533U (en) | Air turbine starter performance test apparatus | |
| CN109708876B (en) | Loading test device of drum type filter screen speed reduction driving device | |
| CN201196154Y (en) | Diesel engine-driving combination type high speed blowing machine | |
| CN105437967A (en) | Automobile auxiliary power system and new energy automobile | |
| CN202541314U (en) | Engine power distribution system device based on reduction of start-stop impact of engine | |
| CN114001966B (en) | Test bed for starting and performance test of fuel engine casing | |
| CN204154506U (en) | Car engine rack endurance test tool | |
| CN215884124U (en) | High-speed power source system | |
| CN216926044U (en) | High-low rotating speed integrated blade prediction maintenance device |
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 |