CN116374196A - Liftable large-scale screw test platform based on electric main shaft - Google Patents
Liftable large-scale screw test platform based on electric main shaft Download PDFInfo
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- CN116374196A CN116374196A CN202211685304.7A CN202211685304A CN116374196A CN 116374196 A CN116374196 A CN 116374196A CN 202211685304 A CN202211685304 A CN 202211685304A CN 116374196 A CN116374196 A CN 116374196A
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 claims abstract description 20
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- 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
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- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a lifting large-scale propeller test platform based on an electric spindle, which consists of a hydraulic lifting platform, a movable guide rail, a flange plate for fixedly mounting a propeller, a bearing seat, a slip ring, a rotating shaft, a torque detection device, an elastic pin coupler, a driving unit and a push-pull force detection device, wherein the propeller is driven to rotate by the driving unit-the electric spindle, the torque, the rotating speed and the push-pull force of the propeller are fed back in real time through a push-pull force sensor and a dynamic torque sensor, and a test system can record corresponding parameters and alarm and stop processing is carried out on abnormal conditions. The test platform has a one-key lifting function, is convenient for replacing large propellers with different sizes and models, is applicable to the variable-pitch propeller test due to the slip ring application, can simulate the actual working conditions of the large propellers well, and improves the test quality of the large propellers.
Description
Technical Field
The invention relates to aviation test equipment, in particular to a lifting large-scale propeller test platform based on an electric spindle.
Background
The air transportation industry is an important source of global carbon emissions, and green aviation is an important technical field of global competition at present. Compared with the traditional aircraft, the electric aircraft can reduce the flight cost and the carbon dioxide emission, so that the electric aircraft technology is a key technical approach for realizing global energy conservation and emission reduction. As a key component of an electric aircraft, the propeller needs to be tested for various parameters before practical application to ensure the rationality and reliability of its design. The existing large-scale propeller testing device mainly comprises a propeller which is arranged on a bracket, a main shaft is fixedly connected with a speed reducer, the speed reducer is fixedly connected with a driving motor, the speed reducer is driven by the motor to drive the propeller to rotate, a sensor is arranged on the bracket, and various parameters of the propeller in operation are measured by the sensor arranged on the bracket. However, the existing large-scale propeller test platform is complex in structure, time and labor are wasted in replacing propellers, and the test of the fixed-distance propellers can be realized only, so that the test platform cannot be well suitable for testing various large-scale propellers.
Disclosure of Invention
The invention aims to provide a lifting large-scale propeller test platform based on an electric spindle, and provides a test method of the test platform, which solves the problems that the existing large-scale propeller test platform is troublesome in propeller replacement, complex in structure and the like, is not only suitable for testing fixed-distance propellers, but also suitable for testing variable-pitch propellers, and has the characteristics of simple structure, easiness in maintenance, convenience in use and the like.
The aim and the technical problems of the invention are realized by adopting the following technical proposal. The invention provides a lifting large-scale propeller test platform, which comprises a hydraulic lifting platform, wherein a movable guide rail is arranged on the table top of the hydraulic lifting platform, a bottom plate is arranged on the movable guide rail in a sliding manner, an electric spindle is fixed on the bottom plate, an output shaft of the electric spindle is connected with a dynamic torque sensor through a first elastic pin coupler, the other end of the dynamic torque sensor is connected with a rotating shaft through a second elastic pin coupler, the rotating shaft is supported on a bearing seat, and a bearing seat bracket for fixing the bearing seat is also arranged on the bottom plate; the front end of the rotating shaft is fixed with a flange plate for installing a propeller, the periphery of the rotating shaft is also provided with a slip ring, an inner ring of the slip ring is fixed on the rotating shaft, an outer ring of the slip ring is fixed on a bearing seat bracket, and a lead of the slip ring penetrates out of a central cavity of the rotating shaft and is connected with a pitch-changing device of the pitch-changing propeller; a push-pull force detection device for detecting pushing force and pulling force when the propeller works is also arranged between the table top and the bottom plate of the hydraulic lifting platform; the dynamic torque sensor and the push-pull force detection device are both in communication connection with the industrial personal computer through the acquisition card, and the industrial personal computer also controls the output rotating speed of the electric spindle through the frequency converter.
The aim and the technical problems of the invention can be further realized by adopting the following technical measures.
The lifting large-scale propeller test platform is characterized in that a safety device for preventing the bottom plate from falling off when the push-pull force detection device breaks is further arranged between the hydraulic lifting platform and the bottom plate.
The lifting large-scale propeller test platform comprises the safety device, wherein the safety device comprises a first safety rod support fixed on a bottom plate, a second safety rod support fixed on a table top of the hydraulic lifting platform and a safety rod for connecting the first safety rod support and the second safety rod, and the two ends of the safety rod are stretched only when the push-pull force detection device breaks.
The lifting large-scale propeller test platform comprises the push-pull force sensor, wherein one end of the push-pull force sensor is connected with the bottom plate through the first SF3 joint bearing connector, and the other end of the push-pull force sensor is connected with the second safety rod bracket through the second SF3 joint bearing connector.
In the lifting large-scale propeller test platform, one end of the safety rod is a rod head end which is blocked and limited by the safety rod support, and the other end of the safety rod is a threaded end of a nut which is blocked and limited by the nut and the safety rod support.
The lifting large-scale propeller test platform is characterized in that through holes which can be used for the threaded ends of the safety bars to pass through and stop the heads of the safety bars are formed in the first safety bar support and the second safety bar support, and self-lubricating graphite copper sleeves with the inner diameters larger than the diameters of the safety bars are further nested in the through holes.
The hydraulic lifting platform is a fixed lifting platform, adopts a scissor type structure and is driven by two hydraulic cylinders.
In the lifting large-scale propeller test platform, the periphery of the rotating shaft is of a stepped shaft structure, and the stepped shaft forms a first shaft shoulder, a second shaft shoulder and a third shaft shoulder from front to back; the bearing seat is internally provided with a left angular contact ball bearing and a right angular contact ball bearing which are installed back to back, a third shaft shoulder of the rotating shaft is propped against the inner ring of the right angular contact ball bearing, and the left angular contact ball bearing inner ring is tightly pressed by the fixing nut.
The lifting large-scale propeller test platform is characterized in that the inner ring of the slip ring is fixed at the second shoulder of the rotating shaft by the fixing bolt, the part of the rotating shaft, which is positioned at the front end of the second shoulder, is of a hollow structure, and a lead of the slip ring penetrates out from the front end along the center of the rotating shaft.
The front end of the rotating shaft of the liftable large-scale propeller testing platform is connected with the flange plate through the transmission thread, and the flange plate is tightly pressed at the first shaft shoulder by the locking nut.
Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the invention can achieve quite technical progress and practicability, has wide industrial application value, and has at least the following advantages:
the liftable large-scale propeller test platform based on the electric spindle has the following advantages:
1. the invention is suitable for testing large-sized fixed-pitch propellers and variable-pitch propellers, and can simulate the actual working conditions of the large-sized propellers more truly.
2. Parameters such as rotating speed, torque, power consumption, slurry force effect, throttle percentage and the like in the testing process can be automatically recorded and saved, and subsequent data analysis and export are facilitated.
3. The electric spindle in the device can provide the rotating speed and torque required by testing the large-scale propeller, omits an intermediate speed change device and simplifies the structure of a testing platform.
4. The hydraulic lifting platform can save manpower, does not need to ascend a height, and is convenient to replace and disassemble the propeller.
5. The push-pull force sensor and the dynamic torque sensor feed back the torque, the rotating speed and the push-pull force of the propeller in real time, and the industrial control computer can record corresponding parameters and give an alarm to stop the machine for abnormal conditions.
Drawings
FIG. 1 is an isometric view of a testing apparatus of the present invention;
FIG. 2 is a two-dimensional block diagram of a test apparatus of the present invention;
FIG. 3 is a schematic diagram of a safety device and push-pull force detection device of the test device of the present invention;
FIG. 4 is a schematic view of the rotation axis of the testing device of the present invention.
[ Main element symbols description ]
1-hydraulic lifting platform
2-moving guide rail
3-floor
4-flange plate
5-slip ring
6-bearing seat
7-bearing seat support
8-rotation axis
9-second elastic pin coupling
10-dynamic torque sensor
11-Torque sensor bracket
12-first elastic pin coupling
13-motorized spindle
14-safety device
15-push-pull force detection device
16-hydraulic cylinder
1401-first safety bar support
1402-safety lever
1403-second safety bar support
1501-first SF3 knuckle bearing connector
1502-push-pull force sensor
1503-second SF3 knuckle bearing connector
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following detailed description refers to the specific implementation, structure, characteristics and effects of the lifting large-scale propeller test platform according to the invention with reference to the accompanying drawings and the preferred embodiment.
Referring to fig. 1-4, a part of a structural schematic diagram of a liftable large-scale propeller test platform according to the present invention is shown, and the test platform includes a hydraulic lifting platform 1, a movable rail 2, a bottom plate 3, a flange 4, a slip ring 5, a bearing seat 6, a bearing seat support 7, a rotating shaft 8, a second elastic pin coupling 9, a dynamic torque sensor 10, a torque sensor support 11, a first elastic pin coupling 12, an electric spindle 13, a safety device 14, a push-pull force detection device 15, and a hydraulic cylinder 16.
The hydraulic lifting platform 1 is a fixed lifting platform, adopts a scissor fork structure, is driven by two hydraulic cylinders 16, and hydraulic oil required by the hydraulic cylinders 16 is provided by a hydraulic system. If the screw propeller needs to be detached and replaced, the hydraulic lifting platform 1 can be moved to the lowest height through the one-key lifting function, and after the screw propeller is installed, the hydraulic lifting platform 1 is moved to the highest height, so that a sufficient rotating space is provided for the screw propeller.
The movable guide rail 2 is fixed on the hydraulic lifting platform 1, and the bottom plate 3 is installed on the movable guide rail 2 and can move on the hydraulic lifting platform 1 along the movable guide rail 2. The motorized spindle 13 is fixed on the base plate 3, and an output shaft of the motorized spindle 13 is connected with the dynamic torque sensor 10 through the first elastic pin coupler 12, the other end of the dynamic torque sensor 10 is connected with the rotating shaft 8 through the second elastic pin coupler 9, the rotating shaft 8 is supported on the bearing seat 6, the bearing seat 6 is fixed on the bearing seat support 7, and the bearing seat support 7 is fixed on the base plate 3. The front end of the rotating shaft 8 is fixed with a flange 4 which is used for fixedly mounting a propeller. The rotating shaft 8 is also provided with a slip ring 5 used for being connected with a variable pitch propeller driving device at a position between the flange plate 4 and the bearing seat 6, an inner ring of the slip ring 5 is fixed on the peripheral surface of the rotating shaft 8, and an outer ring of the slip ring 5 is fixed on the bracket 7.
A torque sensor bracket 11 is also fixed on the bottom plate 3, and is used for realizing the supporting and fixing of the dynamic torque sensor 10. The dynamic torque sensor 10 is fixed to the torque sensor bracket 11 by a fixing bolt.
The adoption of the elastic pin coupling can achieve the effects of transmitting large torque and buffering and damping, has certain axial movement compensation capability, and detects the torque and the rotating speed of the propeller during working through the dynamic torque sensor 10.
The motorized spindle 13 is directly driven by an internal motor, an intermediate variable speed transmission device is omitted, and the torque and the working rotation speed required by the test propeller can be obtained through a variable frequency control device, so that the motorized spindle is compact in structure and light in weight.
In this embodiment, the outer circumference of the rotating shaft 8 has a stepped shaft structure, and the stepped shaft forms three shaft shoulders from front to back, namely a first shaft shoulder, a second shaft shoulder and a third shaft shoulder, respectively, and the rotating shaft has different outer diameter sizes.
The bearing seat 6 is internally provided with a left angular contact ball bearing and a right angular contact ball bearing which are installed back to back, the left angular contact ball bearing outer ring is pressed by the end cover of the bearing seat, and a third shaft shoulder of the rotating shaft 8 is propped against the right angular contact ball bearing inner ring and presses the left angular contact ball bearing inner ring by the fixing nut. The largest part of the rear end of the rotating shaft 8 is connected with a second elastic pin coupler 9 through a key.
The part of the rotating shaft 8 positioned at the front end of the second shoulder is of a hollow structure, the inner ring of the slip ring 5 is fixed at the second shoulder by a fixing bolt, and a wire of the slip ring 5 penetrates out of the front end of the rotating shaft 8 along the center of the rotating shaft 8 and is used for being connected with a pitch-changing propeller pitch-changing device. The slip ring outer ring rotation stop piece is fixed on the bearing seat bracket 7 by a fixing bolt. The front end of the rotating shaft 8 is connected with the flange plate 4 through transmission threads, and the flange plate 4 is pressed at the first shaft shoulder by a locking nut.
A safety device 14 for preventing the bottom plate 3 from moving along the moving guide rail 2 under the action of push-pull force is further arranged between the hydraulic lifting platform 1 and the bottom plate 3, and the safety device 14 comprises a first safety bar bracket 1401 fixed on the bottom plate 3 and a second safety bar bracket 1403 fixed on the table top of the hydraulic lifting platform 1; a push-pull force detection device 15 is connected between the bottom plate 3 and the second safety bar support 1403, and the push-pull force detection device 15 detects the push force and the pull force of the propeller during operation.
At least two safety bars 1402 are further arranged between the first safety bar support 1401 and the second safety bar support 1403, and the safety bars 1402 can be connected between the first safety bar support 1401 and the second safety bar support 1403 after the push-pull force detection device 15 is broken, so that safety accidents such as bottom plate flying-out and the like are prevented when the fixing bolt of the push-pull force sensor is broken. That is, when the first and second safety bar frames 1401 and 1403 are connected by the safety bar 1402, the maximum distance therebetween is greater than that when connected by the push-pull force detecting means 15, and only when the push-pull force detecting means 15 cannot be operated, the safety bar 1402 is operated to be stretched.
In this embodiment, the push-pull force detecting device 15 includes a push-pull force sensor 1502, and one end of the push-pull force sensor 1502 is connected to the first safety lever bracket 1401 or the bottom plate 3, and the other end is connected to the second safety lever bracket 1403. Preferably, one end of the push-pull force sensor 1502 is connected with the bottom plate 3 through a first SF3 knuckle bearing connector 1501, and the other end is connected with the second safety lever bracket 1403 through a second SF3 knuckle bearing connector 1503.
In this embodiment, one end of the safety bar 1402 is provided with a safety bar head, the other end of the safety bar 1402 is provided with threads, the threaded ends are provided with nuts, through holes which can be used for allowing the threaded ends of the safety bar 1402 to pass through and stop the heads of the safety bar are formed in the first safety bar support 1401 and the second safety bar support 1403, self-lubricating graphite copper sleeves with inner diameters larger than the diameters of the safety bars are further nested in the through holes, the threaded ends of the safety bar 1402 are penetrated by the through holes of the first safety bar support 1401, the through holes of the second safety bar support 1403 are penetrated out, the nuts are locked at the threaded ends, and a gap is reserved between the nuts and the second mounting bar support 1403, so that the mounting bar 1402 does not affect the detection effect of the push-pull force detection device 15, and can provide safety protection for the base 3 after the push-pull force detection device 15 breaks, so as to prevent the base 3 from being separated from the bench.
The dynamic torque sensor 10 and the push-pull force sensor 1502 are both connected with an acquisition card, the acquisition card is in communication connection with the industrial personal computer, and the dynamic torque sensor and the push-pull force sensor transmit data back to the industrial personal computer through the acquisition card; the electric spindle 13 is electrically connected with a frequency converter, and the frequency converter is in communication connection with the industrial personal computer, so that the output rotating speed of the electric spindle can be controlled by the industrial personal computer.
The electric spindle is directly driven by the built-in motor, an intermediate variable speed transmission device is omitted, and the torque and the working rotating speed required by the test propeller can be obtained through the variable frequency control device, so that the electric spindle is compact in structure and light in weight.
Parameters such as rotation speed, tension, torque, power consumption, slurry force effect, throttle percentage and the like can be displayed on a display of the industrial personal computer, a data curve is generated, and the data curve is automatically stored.
The industrial personal computer can also intelligently judge whether each device operates normally or not, and if abnormal conditions occur, audible and visual alarms are generated and the device automatically stops in an emergency mode, so that an operator is reminded to correct errors to carry out secondary tests.
The test platform of the invention is also provided with a cooling system for radiating the electric spindle 13. Preferably, the cooling system is a water cooling system.
When the test platform is used, firstly, the hydraulic and electric systems of the hydraulic lifting platform are checked, after no leakage or exposure is confirmed, a water inlet interface and a water outlet interface at the tail part of the electric spindle 13 are respectively connected with a water inlet and a water outlet of a circulating cooling system, a circulating water pump is started, whether the water leakage exists at the interfaces is checked, an industrial personal computer is started, a system operation interface is entered, a sudden stop switch is opened, a frequency converter is started, the communication of the frequency converter is confirmed to be normal, a collecting card is confirmed to be normal, a primary test button is clicked to enable the electric spindle 13 to idle at an initial set test speed of 100 r/min for a preset time of 5 minutes, abnormal sound or alarm is observed, then the hydraulic lifting platform 1 is moved to the lowest height through a one-key lifting function, a screw is installed on the flange plate 4 through a fixing bolt, if the screw is tested, a wire required by the pitch-changing device is connected, after the wire connection is confirmed to be normal, and the hydraulic lifting platform 1 is moved to the maximum height after the screw installation is confirmed to be correct; the dynamic torque sensor and the push-pull force sensor transmit data back to the industrial personal computer through the acquisition card, after the acquired interface display data are stable, the throttle percentage of the operation interface is adjusted according to the requirement of a simulation test to adjust the output frequency of the frequency converter, parameters such as rotation speed, tension, torque, power consumption, slurry force effect, throttle percentage and the like are displayed on the display in real time, a data curve is generated, and the data curve is automatically stored; the monitoring program of the test platform can intelligently judge whether the test platform runs normally or not, and if abnormal conditions occur, audible and visual alarms are generated and the test platform automatically stops in an emergency mode, so that an operator is reminded to correct errors to carry out secondary tests.
The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (10)
1. Large-scale screw test platform of liftable based on electricity main shaft, its characterized in that: the hydraulic lifting platform comprises a hydraulic lifting platform, wherein a movable guide rail is arranged on the table top of the hydraulic lifting platform, a bottom plate is arranged on the movable guide rail in a sliding manner, an electric spindle is fixed on the bottom plate, an output shaft of the electric spindle is connected with a dynamic torque sensor through a first elastic pin coupler, the other end of the dynamic torque sensor is connected with a rotating shaft through a second elastic pin coupler, the rotating shaft is supported on a bearing seat, and a bearing seat bracket for fixing the bearing seat is further arranged on the bottom plate; the front end of the rotating shaft is fixed with a flange plate for installing a propeller, the periphery of the rotating shaft is also provided with a slip ring, an inner ring of the slip ring is fixed on the rotating shaft, an outer ring of the slip ring is fixed on a bearing seat bracket, and a lead of the slip ring penetrates out of a central cavity of the rotating shaft and is connected with a pitch-changing device of the pitch-changing propeller; a push-pull force detection device for detecting pushing force and pulling force when the propeller works is also arranged between the table top and the bottom plate of the hydraulic lifting platform; the dynamic torque sensor and the push-pull force detection device are both in communication connection with the industrial personal computer through the acquisition card, and the industrial personal computer also controls the output rotating speed of the electric spindle through the frequency converter.
2. The electric spindle-based liftable large-sized propeller test platform according to claim 1, wherein: and a safety device for preventing the bottom plate from falling off when the push-pull force detection device breaks is further arranged between the hydraulic lifting platform and the bottom plate.
3. The electric spindle-based liftable large-sized propeller test platform according to claim 2, wherein: the safety device comprises a first safety bar support fixed on the bottom plate, a second safety bar support fixed on the table top of the hydraulic lifting platform and a safety bar for connecting the first safety bar support and the second safety bar, and the two ends of the safety bar are stretched only when the push-pull force detection device breaks.
4. A motorized spindle-based liftable large-sized propeller test platform according to claim 3, characterized in that: the push-pull force detection device comprises a push-pull force sensor, one end of the push-pull force sensor is connected with the bottom plate through a first SF3 joint bearing connector, and the other end of the push-pull force sensor is connected with a second safety rod bracket through a second SF3 joint bearing connector.
5. A motorized spindle-based liftable large-sized propeller test platform according to claim 3, characterized in that: one end of the safety rod is a rod head end which is blocked and limited by the safety rod support, and the other end of the safety rod is a threaded end of a nut which is blocked and limited by the nut and the safety rod support.
6. The electric spindle-based liftable large-sized propeller test platform of claim 5, wherein: the first safety rod support and the second safety rod support are respectively provided with a through hole which can be used for the threaded end of the safety rod to pass through and stop the head of the safety rod, and a self-lubricating graphite copper sleeve with the inner diameter larger than the diameter of the safety rod is further nested in the through holes.
7. The electric spindle-based liftable large-sized propeller test platform according to claim 1, wherein: the hydraulic lifting platform is a fixed lifting platform and adopts a scissor fork structure and is driven by two hydraulic cylinders.
8. The electric spindle-based liftable large-sized propeller test platform according to claim 1, wherein: the periphery of the rotating shaft is of a stepped shaft structure, and a first shaft shoulder, a second shaft shoulder and a third shaft shoulder are formed on the stepped shaft from front to back; the bearing seat is internally provided with a left angular contact ball bearing and a right angular contact ball bearing which are installed back to back, a third shaft shoulder of the rotating shaft is propped against the inner ring of the right angular contact ball bearing, and the left angular contact ball bearing inner ring is tightly pressed by the fixing nut.
9. The electric spindle-based liftable large-sized propeller test platform of claim 8, wherein: the inner ring of the slip ring is fixed at the second shoulder of the rotating shaft by a fixing bolt, the part of the rotating shaft positioned at the front end of the second shoulder is of a hollow structure, and a lead of the slip ring penetrates out from the front end along the center of the rotating shaft.
10. The electric spindle-based liftable large-sized propeller test platform of claim 9, wherein: the front end of the rotating shaft is connected with the flange plate through a transmission thread, and the flange plate is pressed at the first shaft shoulder by a locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685304.7A CN116374196A (en) | 2022-12-27 | 2022-12-27 | Liftable large-scale screw test platform based on electric main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685304.7A CN116374196A (en) | 2022-12-27 | 2022-12-27 | Liftable large-scale screw test platform based on electric main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116374196A true CN116374196A (en) | 2023-07-04 |
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ID=86969955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211685304.7A Pending CN116374196A (en) | 2022-12-27 | 2022-12-27 | Liftable large-scale screw test platform based on electric main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116374196A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116878583A (en) * | 2023-08-01 | 2023-10-13 | 河北天启通宇航空器材科技发展有限公司 | Aeroengine propeller test system |
-
2022
- 2022-12-27 CN CN202211685304.7A patent/CN116374196A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116878583A (en) * | 2023-08-01 | 2023-10-13 | 河北天启通宇航空器材科技发展有限公司 | Aeroengine propeller test system |
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