CN114577432A - Open type wind tunnel lifting system for airplane test and lifting method thereof - Google Patents
Open type wind tunnel lifting system for airplane test and lifting method thereof Download PDFInfo
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- CN114577432A CN114577432A CN202210477748.5A CN202210477748A CN114577432A CN 114577432 A CN114577432 A CN 114577432A CN 202210477748 A CN202210477748 A CN 202210477748A CN 114577432 A CN114577432 A CN 114577432A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
- B66F7/0666—Multiple scissor linkages vertically arranged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/22—Lifting frames, e.g. for lifting vehicles; Platform lifts with tiltable platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- Aviation & Aerospace Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Manufacturing & Machinery (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses an open type wind tunnel lifting system for airplane testing and a lifting method thereof, and belongs to the technical field of airplane testing. The system comprises a tool standard knot, a scissor-type lifting mechanism, a fan module and a position monitoring device for controlling the normal operation of each electric element, which are sequentially distributed from bottom to top. The lifting height of the fan module is coarsely adjusted and finely adjusted through the scissor-type lifting mechanism, so that the fan module with heavy weight and large torque is conveyed to a specified position, reliable stability and a positioning function are provided, the scissor-type lifting mechanism adopts a stepped lifting process, and the stroke of a single hydraulic scissor-type frame is shortened. The invention can not only adjust the lifting height of the fan module, but also adjust the horizontal rotation angle and the pitching angle of the fan module, better simulate the natural wind of various blowing angles and ensure that the test data is more comprehensive and accurate.
Description
Technical Field
The invention belongs to the technical field of airplane testing, and particularly relates to an open type wind tunnel lifting system for airplane testing and a lifting method thereof.
Background
The blowing test system is one of special environment simulation systems in a climate environment laboratory, mainly comprises a fan array subsystem and a wind tunnel subsystem, and is used for carrying out blowing simulation environment tests in the laboratory. According to the structural division, the blowing test device is composed of a fan module and a lifting module in an up-and-down layout mode, wherein the fan module comprises an axial flow fan, a matched motor, a round-square transition section, an equal straight section and the like, and wind with different qualities (speed/humidity/wind direction) is provided. But because aircraft fuselage position is higher and the environmental test operating mode is various, need collocation lift platform to accomplish the environmental test of blowing, this lift platform can make the fan module of big weight carry out the free movement.
Therefore, in a laboratory blowing environment test, the lifting platform mechanism not only bears the dead weight of the fan module, but also bears the reaction force and the centrifugal force brought by the working process of the fan, and under the premise of ensuring the stability and the safety of the blowing test device, the fan is required to be lifted to different heights, so that the design of the lifting platform mechanism is greatly challenged.
When the existing lifting system utilizes a hydraulic cylinder to lift, the lifting system can not carry out in a grading manner, so that the stroke of the hydraulic cylinder is long, the stability is poor, meanwhile, when the weighing equipment drops accidentally, no buffer element exists, major accidents are easily caused, the safety performance is low, the pitching angle and the horizontal rotation angle of a fan module can not be adjusted, the formed wind force can not meet the characteristic of multi-angle blowing of natural wind, and the testing precision is low.
Disclosure of Invention
In view of the above problems, the present invention provides an open wind tunnel lifting system for aircraft testing and a lifting method thereof, which can deliver a heavy-weight and high-torque fan module to a designated position and provide reliable stability and positioning functions.
The technical scheme of the invention is as follows: an open type wind tunnel lifting system for airplane testing and a lifting method thereof comprise a tool standard knot, a scissor type lifting mechanism and a fan module which are sequentially distributed from bottom to top, and a position monitoring device for controlling the normal operation of each electrical element;
the bottom end of the tool standard joint is provided with a wear-resistant rubber pad;
the scissor type lifting mechanism comprises an installation bottom plate connected with the upper end of a tool standard knot through a bolt, two sliding installation supports arranged on the left side and the right side of the upper end of the installation bottom plate and distributed along the width direction of the installation bottom plate, a plurality of horizontal installation plates which are uniformly distributed from top to bottom and can slide up and down along the sliding installation supports, a working table surface arranged between the two horizontal installation plates which are distributed oppositely on the two sides, and a primary hydraulic scissor frame arranged between the two adjacent horizontal installation plates;
a first mounting groove is formed in the upper end of the working table, an adjusting table is clamped in the first mounting groove, and a secondary hydraulic fork shearing frame is arranged between the adjusting table and the first mounting groove;
the left side and the right side of the mounting bottom plate are respectively provided with a buffering support rod, the upper end of the buffering support rod positioned on the left side penetrates through each horizontal mounting plate on the corresponding side, the upper end of the buffering support rod positioned on the right side penetrates through each horizontal mounting plate on the corresponding side, each horizontal mounting plate is in sliding connection with the outer wall of the buffering support rod on the corresponding side, a buffering strip is arranged at the connection position, and the outer wall of the buffering support rod is uniformly provided with a plurality of buffering balls from top to bottom;
the fan module is arranged at the upper end of the adjusting table board;
the position monitoring device is internally provided with a PLC controller for controlling each electrical element to normally operate, pull wire sensors respectively arranged on the working table surface and the adjusting table surface, and a wind power detector connected with the PLC controller.
Furthermore, the rated pressure of a hydraulic system in the primary hydraulic fork shearing frame and the secondary hydraulic fork shearing frame is 16MP, and the maximum flow is 70L/min, wherein the lifting speed of the primary hydraulic fork shearing frame is 100mm/s, and the lifting speed of the secondary hydraulic fork shearing frame is 30 mm/s.
Further, it is equipped with the second mounting groove to adjust mesa upper portion center department, just be equipped with first angle adjusting part in the second mounting groove, first angle adjusting part includes that the level locates in the second mounting groove and intermeshing's first rotating gear and second rotating gear, drive first rotating gear pivoted motor, locate the reduction gear of first rotating gear department, locate the first angle sensor on adjusting the mesa, be connected through the rotating shaft between first rotating gear and the fan module. When the horizontal angle of fan module needs to be adjusted, the first rotating gear is driven to rotate through the motor, at the moment, the second rotating gear rotates under the driving of the first rotating gear, the fan module is enabled to rotate synchronously, the rotating angle of the fan module is detected through the first angle sensor, when the preset angle is reached, the speed reducer is started, the rotating speed can be reduced through the speed reducer, the torque output by the motor is increased, and the angle control of the first rotating gear and the second rotating gear is enabled to be more accurate.
Further, be equipped with lock speed reduction unit in the second mounting groove, lock speed reduction unit includes that the arc that sets up along the horizontal direction and the opening part is equipped with sawtooth detains the cover, locates the arc is detained the first electric telescopic handle between cover and the second mounting groove inner wall, the arc opening direction that the cover was detained to the arc is relative with second rotating gear. After the speed reducer is started, after the speed of the second rotating gear is slowed, the first electric telescopic rod is started and extended, the arc buckle cover is enabled to be close to the second rotating gear side until the sawteeth are contacted with the outer wall of the second rotating gear, the second rotating gear is enabled to stop rapidly, and the second rotating gear cannot stop rapidly after the speed of the second rotating gear is reduced due to the fact that the buckle speed reducing assembly is matched with the speed reducer.
Further, the arc is detained and is equipped with buffering hollow ball between cover and the electric telescopic handle, buffering hollow ball outer wall is equipped with the buffering mouth that distributes along second rotating gear rotation direction, just buffering mouth all is equipped with the anticollision strip all around, is equipped with the installation ball in the buffering hollow ball, the installation ball outer wall is equipped with the accessible buffering mouth extends to the outside connecting rod of buffering hollow ball, the arc is detained the cover and is connected with the connecting rod. When sawtooth and second rotating gear outer wall contact, because both interact can make the arc detain the cover and drive the connecting rod and appear swinging in buffering mouth, the installation ball is at buffering hollow ball internal rotation, because the multitime swing of making a round trip, can eliminate inertial force, avoids inertial direct action to detain between cover and the first electric telescopic handle in the arc, reduces the arc and detains the firm nature of being connected between cover and the first electric telescopic handle.
Further, be equipped with second angle adjusting part between fan module and the regulation mesa, second angle adjusting part is including locating first link and the second link that adjusts mesa upper end and rotate with fan module outer wall and be connected, be connected through the dead lever between first link bottom and the regulation mesa, be connected through second electric telescopic handle between second link bottom and the regulation mesa, first link department is equipped with second angle sensor, rotate between dead lever and the first link and be connected. When the every single move of fan module was bloied in needs regulation angle, the removal of every single move angle can be taken place to the fan module to extension and compression of accessible second electric telescopic handle, simultaneously, detects turned angle through second angle sensor, when reaching and setting for every single move angle, closes second electric telescopic handle can.
Further, the frock standard festival is the structure of tower crane standard festival by a plurality of single sections concatenation, and the cross sectional dimension of frock standard festival is 6m 2.2m, every the height of single section is 1m, and weight is 1 t.
Furthermore, mechanical locking structures are arranged on the primary hydraulic scissor rack and the secondary hydraulic scissor rack, so that after the platform is lifted, danger caused by sudden drop due to hydraulic pipe burst and leakage is avoided.
The lifting method of the open type wind tunnel lifting system for the airplane test comprises the following steps:
s1, assembling a tooling standard knot of the tower crane standard component structure by using single knots, and mounting a fan module on an adjusting table board through the preliminary heightening of the tooling standard knot;
s2, starting the first-stage hydraulic fork shearing frame at the bottom end and extending to enable the horizontal mounting plate at the bottom end to move upwards, then gradually starting each first-stage hydraulic fork shearing frame from bottom to top to enable the remaining first-stage hydraulic fork shearing frames to extend step by step, enabling each corresponding horizontal mounting plate to move upwards, detecting the lifting height through a pull wire sensor arranged on a working table, completing the position lifting of the working table through the process, and completing the coarse adjustment of the lifting height of the fan module;
s3, starting a secondary hydraulic fork-shearing frame, lifting the adjusting table board through the extension of the secondary hydraulic fork-shearing frame, detecting the lifting height of the adjusting table board through a pull wire sensor arranged on the adjusting table board, finishing the lifting of the position of the adjusting table board through the process, namely finishing the fine adjustment of the lifting height of the fan module, sending the detection values of the pull wire sensor arranged on the working table board and the pull wire sensor arranged on the adjusting table board to a PLC (programmable logic controller), and controlling the opening and closing of each hydraulic fork-shearing frame by the PLC according to the values;
s4, when the height of the fan module is adjusted, and the horizontal angle of the fan module needs to be adjusted, the first rotating gear is driven to rotate by the motor, at the moment, the second rotating gear is driven by the first rotating gear to rotate, so that the fan module synchronously rotates, the rotating angle of the fan module is detected by the first angle sensor, when the preset angle is reached, the speed reducer is started, the rotating speed of the motor can be reduced by the speed reducer, and meanwhile, the first electric telescopic rod is started and extended to enable the arc-shaped buckle cover to approach to the side of the second rotating gear until the sawteeth are contacted with the outer wall of the second rotating gear, so that the second rotating gear stops rotating;
s5, when the pitching and blowing angles of the fan module need to be adjusted, the pitching angles of the fan module can be changed through extension and compression of the second electric telescopic rod, meanwhile, the rotation angle is detected through the second angle sensor, and when the fan module reaches the set pitching angle, the second electric telescopic rod is closed;
s6, the falling of the fan module is opposite to the process of the steps S2-S5.
Compared with the prior art, the invention has the beneficial effects that:
(1) the open type wind tunnel lifting system for the aircraft test realizes coarse adjustment of the lifting height of the fan module by matching each primary hydraulic fork shearing frame, realizes fine adjustment of the lifting height of the fan module by the secondary hydraulic fork shearing frame, enables the fan module with heavy weight and large torque to be sent to a specified position, and provides reliable stability and positioning functions, and the multiple secondary hydraulic fork shearing frames are respectively and independently arranged, which is equivalent to grading the hydraulic lifting process, shortens the stroke of a single hydraulic fork shearing frame, and avoids the problems of poor stability of a lifting platform, large occupied space volume, large operation control difficulty, high production and processing cost and the like caused by selecting a long stroke and a high-specification hydraulic fork shearing frame;
(2) according to the invention, the buffering support rods penetrating through the horizontal mounting plates on the corresponding sides are arranged on the left side and the right side of the mounting bottom plate, when a certain horizontal mounting plate or a working table surface falls accidentally, the buffering strips at the joints of the horizontal mounting plates and the outer walls of the buffering support rods and the buffering balls rub against each other, so that the resistance between the horizontal mounting plates and the buffering support rods is increased, the falling rate of the horizontal mounting plates is reduced, unsafe accidents caused by accidental falling of the horizontal mounting plates are avoided, and the safety is high;
(3) the invention can not only adjust the lifting height of the fan module, but also adjust the horizontal rotation angle and the pitching angle of the fan module, better simulate the natural wind of various blowing angles and ensure that the test data is more comprehensive and accurate.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of a cushioning strut of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a schematic view of a snap-fit speed reduction assembly of the present invention;
FIG. 5 is a schematic view of the structure of the buffer hollow sphere of the present invention;
wherein, 1-tool standard knot, 10-wear-resistant rubber pad, 2-scissor type lifting mechanism, 20-mounting base plate, 200-buffering support rod, 201-buffering ball, 21-sliding mounting bracket, 22-horizontal mounting plate, 220-buffering strip, 23-working table surface, 231-first mounting groove, 232-adjusting table surface, 233-secondary hydraulic scissor frame, 234-second mounting groove, 24-primary hydraulic scissor frame, 25-buckling speed reducing component, 250-arc buckle cover, 2500-sawtooth, 251-first electric telescopic rod, 252-buffering hollow round ball, 253-buffering port, 254-anti-collision strip, 255-mounting ball, 256-connecting rod, 3-fan module, 4-position monitoring device, 40-PLC controller, 41-a pull wire sensor, 42-a wind power detector, 5-a first angle adjusting component, 50-a first rotating gear, 51-a second rotating gear, 52-a motor, 53-a speed reducer, 54-a first angle sensor, 6-a second angle adjusting component, 60-a first connecting frame, 61-a second connecting frame, 62-a fixed rod, 63-a second electric telescopic rod and 64-a second angle sensor.
Detailed Description
In order to further understand the contents of the present invention, the present invention is described in detail by examples below.
Example 1
As shown in fig. 1 and 3, an open wind tunnel lifting system for aircraft testing and a lifting method thereof comprise a tool standard knot 1, a scissor type lifting mechanism 2, a fan module 3 and a position monitoring device 4 for controlling normal operation of each electrical element, which are sequentially distributed from bottom to top;
the bottom end of the tool standard section 1 is provided with a wear-resistant rubber pad 10, the tool standard section 1 is of a structure formed by splicing single sections into a tower crane standard section, the cross section of the tool standard section 1 is 6m multiplied by 2.2m, the height of each single section is 1m, and the weight is 1 t;
the scissor type lifting mechanism 2 comprises a mounting base plate 20 connected with the upper end of the tool standard knot 1 through bolts, two sliding mounting brackets 21 which are arranged on the left side and the right side of the upper end of the mounting base plate 20 and are distributed along the width direction of the mounting base plate 20, a plurality of horizontal mounting plates 22 which are uniformly distributed from top to bottom and can slide up and down along the sliding mounting brackets 21, a working table surface 23 arranged between the two horizontal mounting plates 22 which are distributed oppositely on the two sides, and a primary hydraulic scissor frame 24 arranged between the two adjacent horizontal mounting plates 22;
a first mounting groove 231 is formed in the upper end of the working platform 23, an adjusting platform 232 is clamped in the first mounting groove 231, and a secondary hydraulic fork shearing frame 233 is arranged between the adjusting platform 232 and the first mounting groove 231;
as shown in fig. 2, the left and right sides of the mounting plate 20 are provided with buffer supporting rods 200, the upper end of the left buffer supporting rod 200 penetrates through each horizontal mounting plate 22 on the corresponding side, the upper end of the right buffer supporting rod 200 penetrates through each horizontal mounting plate 22 on the corresponding side, each horizontal mounting plate 22 is slidably connected with the outer wall of the corresponding side buffer supporting rod 200, a buffer strip 220 is arranged at the connection position, and the outer wall of the buffer supporting rod 200 is uniformly provided with a plurality of buffer balls 201 from top to bottom;
the fan module 3 is arranged at the upper end of the adjusting table surface 232;
a PLC (programmable logic controller) 40 for controlling each electrical element to normally operate, a stay wire sensor 41 respectively arranged on the working table 23 and the adjusting table 232 and a wind power detector 42 connected with the PLC 40 are arranged in the position monitoring device 4;
the rated pressure of a hydraulic system in the primary hydraulic fork shearing frame 24 and the secondary hydraulic fork shearing frame 233 is 16MP, the maximum flow is 70L/min, the lifting speed of the primary hydraulic fork shearing frame 24 is 100mm/s, the lifting speed of the secondary hydraulic fork shearing frame 233 is 30mm/s, and mechanical locking structures are arranged on the primary hydraulic fork shearing frame 24 and the secondary hydraulic fork shearing frame 233.
Example 2
The present embodiment is different from embodiment 1 in that:
as shown in fig. 3, a second mounting groove 234 is disposed at the center of the upper portion of the adjusting table 232, a first angle adjusting assembly 5 is disposed in the second mounting groove 234, the first angle adjusting assembly 5 includes a first rotating gear 50 and a second rotating gear 51 which are horizontally disposed in the second mounting groove 234 and are engaged with each other, a motor 52 for driving the first rotating gear 50 to rotate, a speed reducer 53 disposed at the first rotating gear 50, and a first angle sensor 54 disposed on the adjusting table 232, and the first rotating gear 50 is connected to the fan module 3 through a rotating shaft.
Example 3
The present embodiment is different from embodiment 1 in that:
as shown in fig. 4, a buckling deceleration assembly 25 is disposed in the second mounting groove 234, the buckling deceleration assembly 25 includes an arc buckling cover 250 disposed along the horizontal direction and having a saw tooth 2500 at an opening, and a first electric telescopic rod 251 disposed between the arc buckling cover 250 and the inner wall of the second mounting groove 234, and an arc opening direction of the arc buckling cover 250 is opposite to the second rotating gear 51.
As shown in fig. 5, a buffering hollow ball 252 is arranged between the arc-shaped buckle cover 250 and the first electric telescopic rod 251, a buffering opening 253 distributed along the rotation direction of the second rotating gear 51 is arranged on the outer wall of the buffering hollow ball 252, anti-collision strips 254 are arranged around the buffering opening 253, an installation ball 255 is arranged in the buffering hollow ball 252, a connecting rod 256 capable of extending to the outside of the buffering hollow ball 252 through the buffering opening 253 is arranged on the outer wall of the installation ball 255, and the arc-shaped buckle cover 250 is connected with the connecting rod 256.
Example 4
The present embodiment is different from embodiment 1 in that:
as shown in fig. 3, a second angle adjusting assembly 6 is arranged between the fan module 3 and the adjusting table surface 232, the second angle adjusting assembly 6 comprises a first connecting frame 60 and a second connecting frame 61 which are arranged at the upper end of the adjusting table surface 232 and are rotatably connected with the outer wall of the fan module 3, the bottom end of the first connecting frame 60 is connected with the adjusting table surface 232 through a fixing rod 62, the bottom end of the second connecting frame 61 is connected with the adjusting table surface 232 through a second electric telescopic rod 63, a second angle sensor 64 is arranged at the position of the first connecting frame 60, and the fixing rod 62 is rotatably connected with the first connecting frame 60.
Example 5
The embodiment of the present invention describes a lifting method of the open wind tunnel lifting system for aircraft testing in the embodiment 4, including the following steps:
s1, assembling a tooling standard knot 1 of the tower crane standard component structure by using single knots, and mounting a fan module 3 on an adjusting table surface 232 through the preliminary heightening of the tooling standard knot 1;
s2, starting the first-stage hydraulic scissor bracket 24 at the bottom end and extending the first-stage hydraulic scissor bracket 24 to move the horizontal mounting plate 22 at the bottom end upward, then starting each first-stage hydraulic scissor bracket 24 from bottom to top step by step, extending the remaining first-stage hydraulic scissor brackets 24 step by step, moving each corresponding horizontal mounting plate 22 upward, detecting the elevation height by the stay wire sensor 41 arranged on the working table 23, completing the elevation of the working table 23 by the above process, and completing the coarse adjustment of the elevation height of the fan module 3;
s3, starting the secondary hydraulic scissor bracket 233, lifting the adjusting table 232 by extending the secondary hydraulic scissor bracket 233, detecting the lifting height of the adjusting table 232 by the pull sensor 41 arranged on the adjusting table 232, completing the lifting of the adjusting table 232 through the above process, i.e. completing the fine adjustment of the lifting height of the fan module 3, sending the detection values of the pull sensor 41 arranged on the working table 23 and the pull sensor 41 arranged on the adjusting table 232 to the PLC controller 40, and the PLC controller 40 controlling the opening and closing of each hydraulic scissor bracket according to the values;
s4, when the height of the fan module 3 is adjusted and the horizontal angle of the fan module 3 needs to be adjusted, the first rotating gear 50 is driven to rotate by the motor 52, at the moment, the second rotating gear 51 is driven by the first rotating gear 50 to rotate, so that the fan module 3 synchronously rotates, the rotating angle of the fan module 3 is detected by the first angle sensor 54, when the preset angle is reached, the speed reducer 53 is started, the rotating speed of the motor 52 can be reduced by the speed reducer 53, and meanwhile, the first electric telescopic rod 251 is started and extends to enable the arc buckle cover 250 to approach to the side of the second rotating gear 51 until the sawtooth 2500 is contacted with the outer wall of the second rotating gear 51, so that the second rotating gear 51 stops rotating quickly;
s5, when the pitching and blowing angles of the fan module 3 need to be adjusted, the pitching angles of the fan module 3 can be changed through extension and compression of the second electric telescopic rod 63, meanwhile, the rotation angle is detected through the second angle sensor 64, and when the fan module 3 reaches the set pitching angle, the second electric telescopic rod 63 is closed;
s6, the falling of the fan module 3 is opposite to the process of the steps S2-S5.
Claims (9)
1. An open type wind tunnel lifting system for aircraft testing is characterized by comprising a tool standard knot (1), a scissor type lifting mechanism (2), a fan module (3) and a position monitoring device (4) for controlling normal operation of each electrical element, wherein the tool standard knot, the scissor type lifting mechanism and the fan module are sequentially distributed from bottom to top;
the bottom end of the tool standard joint (1) is provided with a wear-resistant rubber pad (10);
the scissor type lifting mechanism (2) comprises a mounting base plate (20) connected with the upper end of the tool standard knot (1) through bolts, two sliding mounting brackets (21) arranged on the left side and the right side of the upper end of the mounting base plate (20) and distributed along the width direction of the mounting base plate (20), a plurality of horizontal mounting plates (22) which are uniformly distributed from top to bottom and can slide up and down along the sliding mounting brackets (21), a working table top (23) arranged between the two horizontal mounting plates (22) which are distributed oppositely on two sides, and a primary hydraulic scissor bracket (24) arranged between the two adjacent horizontal mounting plates (22);
a first mounting groove (231) is formed in the upper end of the working table top (23), an adjusting table top (232) is clamped in the first mounting groove (231), and a secondary hydraulic fork shearing frame (233) is arranged between the adjusting table top (232) and the first mounting groove (231);
the left side and the right side of the mounting base plate (20) are respectively provided with a buffering support rod (200), the upper end of the buffering support rod (200) positioned on the left side penetrates through each horizontal mounting plate (22) on the corresponding side, the upper end of the buffering support rod (200) positioned on the right side penetrates through each horizontal mounting plate (22) on the corresponding side, each horizontal mounting plate (22) is connected with the outer wall of the buffering support rod (200) on the corresponding side in a sliding mode, a buffering strip (220) is arranged at the joint, and the outer wall of the buffering support rod (200) is uniformly provided with a plurality of buffering balls (201) from top to bottom;
the fan module (3) is arranged at the upper end of the adjusting table board (232);
and a PLC (programmable logic controller) for controlling each electrical element to normally operate, a stay wire sensor (41) respectively arranged on the working table surface (23) and the adjusting table surface (232), and a wind power detector (42) connected with the PLC (40) are arranged in the position monitoring device (4).
2. The open wind tunnel lifting system for aircraft testing according to claim 1, wherein the rated pressure of the hydraulic systems in the primary hydraulic fork carriage (24) and the secondary hydraulic fork carriage (233) is 16MP, the maximum flow rate is 70L/min, the lifting speed of the primary hydraulic fork carriage (24) is 100mm/s, and the lifting speed of the secondary hydraulic fork carriage (233) is 30 mm/s.
3. The open type wind tunnel lifting system for the aircraft test according to claim 1, wherein a second mounting groove (234) is formed in the center of the upper portion of the adjusting table top (232), a first angle adjusting assembly (5) is arranged in the second mounting groove (234), the first angle adjusting assembly (5) comprises a first rotating gear (50) and a second rotating gear (51) which are horizontally arranged in the second mounting groove (234) and are meshed with each other, a motor (52) driving the first rotating gear (50) to rotate, a speed reducer (53) arranged at the first rotating gear (50), and a first angle sensor (54) arranged on the adjusting table top (232), and the first rotating gear (50) is connected with the fan module (3) through a rotating shaft.
4. The open wind tunnel lifting system for the aircraft test according to claim 3, wherein a buckling deceleration component (25) is arranged in the second mounting groove (234), the buckling deceleration component (25) comprises an arc buckling cover (250) which is arranged along the horizontal direction and provided with sawteeth (2500) at an opening, and a first electric telescopic rod (251) which is arranged between the arc buckling cover (250) and the inner wall of the second mounting groove (234), and the arc opening direction of the arc buckling cover (250) is opposite to the second rotating gear (51).
5. The open type wind tunnel lifting system for the aircraft test according to claim 4, wherein a buffering hollow ball (252) is arranged between the arc-shaped buckling cover (250) and the first electric telescopic rod (251), a buffering opening (253) distributed along the rotation direction of the second rotating gear (51) is formed in the outer wall of the buffering hollow ball (252), anti-collision strips (254) are arranged on the periphery of the buffering opening (253), a mounting ball (255) is arranged in the buffering hollow ball (252), a connecting rod (256) capable of passing through the buffering opening (253) and extending to the outside of the buffering hollow ball (252) is arranged on the outer wall of the mounting ball (255), and the arc-shaped buckling cover (250) is connected with the connecting rod (256).
6. The open type wind tunnel lifting system for the aircraft test according to claim 1, wherein a second angle adjusting assembly (6) is arranged between the fan module (3) and the adjusting table top (232), the second angle adjusting assembly (6) comprises a first connecting frame (60) and a second connecting frame (61), the first connecting frame (60) and the second connecting frame (61) are arranged at the upper end of the adjusting table top (232) and are rotatably connected with the outer wall of the fan module (3), the bottom end of the first connecting frame (60) is connected with the adjusting table top (232) through a fixing rod (62), the bottom end of the second connecting frame (61) is connected with the adjusting table top (232) through a second electric telescopic rod (63), a second angle sensor (64) is arranged at the position of the first connecting frame (60), and the fixing rod (62) is rotatably connected with the first connecting frame (60).
7. The open wind tunnel lifting system for the aircraft test according to claim 1, wherein the tool standard joint (1) is a structure formed by splicing a plurality of single joints into a tower crane standard joint, the cross-sectional dimension of the tool standard joint (1) is 6m x 2.2m, the height of each single joint is 1m, and the weight of each single joint is 1 t.
8. The open wind tunnel lifting system for aircraft testing according to claim 1, wherein the primary hydraulic scissor bracket (24) and the secondary hydraulic scissor bracket (233) are provided with mechanical locking structures.
9. The method for lifting the open wind tunnel lifting system for the aircraft test according to any one of claims 1 to 8, comprising the steps of:
s1, assembling a tooling standard knot (1) of the tower crane standard component structure by using single knots, and mounting a fan module (3) on an adjusting table board (232) through the preliminary heightening of the tooling standard knot (1);
s2, starting and extending the first-stage hydraulic fork shearing frame (24) at the bottommost end to enable the horizontal mounting plate (22) at the bottommost end to move upwards, then gradually starting each first-stage hydraulic fork shearing frame (24) from bottom to top to enable the remaining first-stage hydraulic fork shearing frames (24) to extend step by step, enabling each corresponding horizontal mounting plate (22) to move upwards, detecting the ascending height through a stay wire sensor (41) arranged on the working table top (23), and completing the position lifting of the working table top (23) through the process, namely completing the rough height adjustment of the fan module (3) in the lifting process;
s3, starting a secondary hydraulic fork shearing frame (233), lifting an adjusting table board (232) through the extension of the secondary hydraulic fork shearing frame (233), detecting the lifting height of the adjusting table board (232) through a stay wire sensor (41) arranged on the adjusting table board (232), finishing the lifting of the position of the adjusting table board (232) through the processes, namely finishing the fine adjustment of the lifting height of a fan module (3), sending detection values of the stay wire sensor (41) arranged on a working table board (23) and the stay wire sensor (41) arranged on the adjusting table board (232) to a PLC (40), and controlling the opening and closing of each hydraulic fork shearing frame by the PLC (40) according to the values;
s4, after the height of the fan module (3) is adjusted, when the horizontal angle of the fan module (3) needs to be adjusted, the first rotating gear (50) is driven to rotate through the motor (52), at the moment, the second rotating gear (51) is driven by the first rotating gear (50) to rotate, the fan module (3) is enabled to rotate synchronously, the rotating angle of the fan module (3) is detected through the first angle sensor (54), when the preset angle is reached, the speed reducer (53) is started, the rotating speed of the motor (52) can be reduced through the speed reducer (53), meanwhile, the first electric telescopic rod (251) is started and extended, the arc-shaped buckle cover (250) is enabled to approach to the side of the second rotating gear (51), and the second rotating gear (51) is enabled to stop rotating until the sawtooth (2500) contacts with the outer wall of the second rotating gear (51);
s5, when the pitching blowing angle of the fan module (3) needs to be adjusted, the pitching angle of the fan module (3) can be changed through the extension and the compression of the second electric telescopic rod (63), meanwhile, the rotation angle is detected through the second angle sensor (64), and when the fan module (3) reaches the set pitching angle, the second electric telescopic rod (63) is closed;
s6, the falling of the fan module (3) is opposite to the process of the steps S2-S5.
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