CN111409859A - Test platform for helicopter rotor blade anti-icing material test - Google Patents
Test platform for helicopter rotor blade anti-icing material test Download PDFInfo
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- CN111409859A CN111409859A CN202010334285.8A CN202010334285A CN111409859A CN 111409859 A CN111409859 A CN 111409859A CN 202010334285 A CN202010334285 A CN 202010334285A CN 111409859 A CN111409859 A CN 111409859A
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- 238000005507 spraying Methods 0.000 claims abstract description 42
- 239000007921 spray Substances 0.000 claims abstract description 33
- 239000003595 mist Substances 0.000 claims abstract description 13
- 239000003973 paint Substances 0.000 claims abstract description 4
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- 238000001514 detection method Methods 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 7
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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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Abstract
The utility model relates to a test platform for helicopter rotor blade anti-icing material test, including paddle simulation piece, gesture adjustment subassembly and spraying subassembly. The blade simulation piece is of a long rod-shaped structure, and the surface of the blade simulation piece can be coated with anti-icing paint; the attitude adjusting assembly can rotate along a horizontal shaft, the blade simulation piece is driven by a first rotary driving piece to rotate, the first rotary driving piece is supported by the attitude adjusting assembly, and the rotation axis of the blade simulation piece is perpendicular to the horizontal axis; a horizontal shaft in the posture adjusting assembly is connected with a lifting assembly to realize support, and the lifting assembly can drive the posture adjusting assembly to lift in the vertical direction; the spray assembly is capable of spraying water mist to the blade simulator to simulate the conditions of high moisture flow encountered by the blades as they rotate.
Description
Technical Field
The utility model belongs to the technical field of the test, concretely relates to test platform is used in helicopter rotor blade anti-icing material test.
Background
The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.
The application of helicopters in various fields and regions is expanding. Helicopters are often subjected to icing flight environments, such as in northeast cold regions, northwest alpine regions, and south-pole scientific investigations. Icing of the rotor blades can cause a series of adverse effects such as deterioration of aerodynamic appearance, reduction of lift force, increase of vibration level, reduction of forced landing capacity and the like, thus endangering flight safety and limiting the application range and time of the helicopter.
The inventor knows that the existing anti-icing and deicing experiments are mainly divided into two categories, namely ground experiments and flight experiments, and although the flight experiments have real data, the flight experiments are expensive, long in time consumption and also have great risks. Therefore, the test through the ground simulation test platform is the main verification means at present, and the development of the icing weather simulation device with simple structure and low energy consumption is an important direction for the research of rotor anti-icing and deicing.
In some test platforms, the helicopter rotor blades are reduced in equal proportion, the steering structure and the driving mechanism are reduced, and the real flight attitude of the rotor blades is simulated, but the components such as the rotor blades and the driving mechanism in the test platform are as complicated as those of the existing helicopters, once production is finished, the rotor blades are inconvenient to replace, the motion trail of the rotor blades is relatively determined, the simulation effect on the rotor blades of different types is poor, and the test platform is not convenient for laboratory use.
In some other test platforms, only can provide the simulation piece of rotor blade for rotor blade rotates along setting for the axis, can't realize rotor blade and the contained angle of horizontal plane and adjust, can't realize rotor blade's upper and lower position control, leads to the simulation test result inaccurate.
Simultaneously, among the current test platform, the relative position between water smoke spray structure and the rotor blade simulation piece can't be adjusted, can only adjust water smoke spray range through the model that changes atomizer, has the extravagant condition of water smoke, and need be equipped with multiple model atomizer, changes loaded down with trivial details.
Disclosure of Invention
The utility model aims at providing a test platform is used in helicopter rotor blade anti-icing material test can simulate the gesture adjustment simulation of the helicopter rotor blade motion in-process of multiple model, solves the problem that the water smoke spray range is not convenient for adjust in water smoke spray structure.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure: a test platform for an anti-icing material test of a helicopter rotor blade comprises a blade simulation piece, an attitude adjusting assembly and a spraying assembly.
The blade simulation piece is of a long rod-shaped structure, and the surface of the blade simulation piece can be coated with anti-icing paint; the attitude adjusting assembly can rotate along a horizontal shaft, the blade simulation piece is driven by a first rotary driving piece to rotate, the first rotary driving piece is supported by the attitude adjusting assembly, and the rotation axis of the blade simulation piece is perpendicular to the horizontal axis; horizontal axis and lifting unit among the gesture adjustment subassembly are connected in order to realize supporting, lifting unit can drive gesture adjustment subassembly and go up and down in vertical direction.
The spray assembly is capable of spraying water mist to the blade simulator to simulate the conditions of high moisture flow encountered by the blades as they rotate. The horizontal distance between the spraying assembly and the blade simulating piece can be adjusted and fixed, and the height of the spraying assembly can be adjusted and fixed so as to change the spraying range of the water mist.
The beneficial effect of this disclosure:
first rotary driving spare can drive the paddle simulation piece and rotate along setting for the axis to the rotation of simulation paddle along self axis of rotation adopts gesture adjustment subassembly to rotate along the horizontal axis, and the axis of rotation and the horizontal axis vertically mode of paddle simulation piece make the paddle simulation piece can be adjusted with the contained angle of horizontal plane, and the effectual helicopter that has simulated is when every single move or turn, the condition that rotor blade and horizontal plane contained angle change.
Adopt paddle simulation piece through the driven mode of first rotary driving spare, can be through changing the paddle simulation piece, be convenient for simulate the rotor blade of different models, improve test platform's simulation range.
By adopting the mode that the horizontal distance between the spraying assembly and the blade simulation piece and the height of the spraying assembly can be adjusted, the spraying range can be changed under the condition that the model of the atomizing nozzle is not changed, and the process of replacing the atomizing nozzle is saved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic diagram of the overall structure in an embodiment of the present disclosure;
FIG. 2 is an isometric view of the overall construction of a spray assembly in an embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating the piping of water and gas in the spray assembly according to an embodiment of the present disclosure;
FIG. 4 is an isometric view of the structure of portions of the spray frame and atomizer head of an embodiment of the present disclosure;
FIG. 5 is an isometric view of a lift mechanism in an embodiment of the present disclosure;
FIG. 6 is an isometric view of an attitude adjustment assembly, a blade simulator, and a lift assembly in an embodiment of the present disclosure;
FIG. 7 is a schematic view illustrating an installation of the box body, the first rotary driving member, the blade rotating shaft and the horizontal rotating shaft according to the embodiment of the present disclosure;
FIG. 8 is a schematic view illustrating the installation of the box, the first rotary driving member, the blade rotating shaft, and the horizontal rotating shaft in another viewing direction according to the embodiment of the present disclosure;
FIG. 9 is a schematic view of the internal structure of the box shown in FIG. 7 with the top cover removed;
FIG. 10 is a schematic top view of the structure of FIG. 8;
figure 11 is a schematic view of the installation of a tension block and a tension bolt in an embodiment of the present disclosure;
FIG. 12 is a schematic structural view of a lift assembly in an embodiment of the present disclosure;
FIG. 13 is a front view of a lift assembly in an embodiment of the present disclosure;
FIG. 14 is a side view of a lift assembly in an embodiment of the present disclosure;
FIG. 15 is a top view of a lift assembly in an embodiment of the present disclosure;
in the figure: 1. a spray assembly; 2. a posture adjustment component; 3. a blade simulator; 4. a lifting assembly;
101. a bracket top plate; 102. a vertical guide post; 103. a cylindrical slider; 104. a bottom plate connecting plate; 105. a small connecting plate; 106. a linear guide rail; 107. a bottom support plate; 108. a guide post fixing part; 109. a fan base plate; 110. a bracket base plate; 111. a scissor lift table; 112. a negative pressure fan; 113. a fan top plate; 114. a spraying frame; 115. a hose; 116. a spray head holder; 117. an atomizing spray head; 118. a lifting platform support plate; 119. a scissor-like leg; 120. a lead screw member; 121. a short linear guide rail;
201. a first side plate; 202. a second side plate; 203. a top plate; 204. a base plate; 205. a first bending plate; 206. a second bending plate; 207. a paddle shaft; 208. a blade bearing seat; 209. a bump; 210. a sleeve; 211. a fixing plate; 212. a blade simulator; 213. pressing a plate; 214. a first motor; 215. a first bracket; 216. a horizontal bearing seat; 217. a driving pulley; 218. a driven pulley; 219. a horizontal rotating shaft; 220. a second motor; 221. a second bracket; 222. an intermediate shaft; 223. a drive sprocket; 224. a driven sprocket; 225. a flat flange guide seat; 226. an electromagnetic brake; 227. a conductive slip ring; 228. a middle shaft bearing seat; 229. a tensioning block; 230. tensioning the bolt;
401. a bottom beam; 402. mounting a plate; 403. a third motor; 404. a lead screw; 405. a first slider; 406. a support frame; 407. a first guide post; 408. an anti-roll plate; 409. anchor bolts; 410. an anti-tilting tripod; 411. a connecting plate; 412. a second slider; 413. a second guide post; 414. a guide post fixing tube; 415. connecting angle steel; 416. a stiffening angle steel; 417. and a guide seat fixing plate.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up, down, left and right" in this disclosure, if any, merely indicate correspondence with the up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure.
In an exemplary embodiment of the present disclosure, as shown in fig. 1-15, a test platform for testing an anti-icing material of a helicopter rotor blade comprises a blade simulator 3, an attitude adjustment assembly 2 and a spray assembly 1.
The blade simulation piece 3 is of a long rod-shaped structure, and the surface of the blade simulation piece 3 can be coated with anti-icing paint; the attitude adjusting assembly 2 can rotate along a horizontal shaft, the blade simulation piece 3 is driven by a first rotary driving piece to rotate, the first rotary driving piece is supported by the attitude adjusting assembly 2, and the rotation axis of the blade simulation piece 3 is perpendicular to the horizontal axis; a horizontal shaft in the posture adjusting assembly 2 is connected with a lifting assembly 4 to realize support, and the lifting assembly 4 can drive the posture adjusting assembly 2 to lift in the vertical direction; the spray assembly 1 is capable of spraying a water mist onto the blade simulator 3 to simulate the high moisture flow encountered by the blades as they rotate.
A spray assembly: as shown in fig. 2 to 5, the spraying assembly 1 includes a spraying frame 114, a negative pressure fan 112 is installed in the spraying frame 114, an atomizer 117 is installed at one side of the negative pressure fan 112, the atomizer 117 is communicated with a pressure water source to spray water mist, and the negative pressure fan 112 can drive the water mist sprayed by the atomizer 117 to move along a set direction to form an air flow with high humidity. The bottom of the spraying frame 114 is connected with a lifting mechanism, the lifting mechanism drives the spraying frame 114 to do lifting motion so as to change the height of the high-humidity air flow in the vertical direction, the bottom of the lifting mechanism is connected with a horizontal linear motion mechanism, and the horizontal linear motion mechanism can drive the lifting mechanism and the spraying frame 114 to move towards the direction far away from or close to the blade simulation piece 3.
Specifically, the spraying frame 114 in this embodiment is a zigzag structure, and may adopt a plurality of spraying frames 114, a nozzle support 116 is fixedly installed around the spraying frame 114, the nozzle support 116 is used for installing an atomizing nozzle 117, and the nozzle is respectively communicated with a water source and an air source through a hose 115. Four atomizing nozzles 117 are uniformly installed on the inner wall of each spraying frame 114 by using the nozzle support 116, and are installed in combination with one of the negative pressure fans 112, a schematic diagram of using two negative pressure fans 112 in combination is provided in the drawing of this embodiment, it can be understood that in other manners, the number of the spraying frames 114 and the number of the negative pressure fans 112 may be other values, and is set by a person skilled in the art.
The lifting mechanism is matched with a guide structure in the vertical direction for use, the guide structure comprises a fan top plate 113 fixedly mounted on the upper end face of the spraying frame 114 and a fan bottom plate 109 mounted on the lower end face of the spraying frame 114, cylindrical sliding blocks 103 are respectively and fixedly mounted on two sides of the fan top plate 113 and the fan bottom plate 109, vertical guide pillars 102 penetrate through the cylindrical sliding blocks 103, the top ends of the vertical guide pillars 102 are fixedly connected through a support top plate 101 to form a whole, two ends of the vertical guide pillars 102 are fixedly connected through a support bottom plate 110 and a support top plate 101 to form a whole, and it can be understood that the vertical guide pillars 102 are vertically arranged to provide guidance for the spraying frame 114, the negative pressure fan 112 and the like during vertical lifting.
In this embodiment, the number of the cylindrical sliders 103 may be four per side, for a total of 8, and the number of the guide posts may be two per side, for a total of four; in other embodiments, the number of the cylindrical sliding blocks 103 and the number of the guiding columns can be set by those skilled in the art, and are not described herein.
In order to realize the fixed connection between the vertical guide post 102 and the top plate 101 and the bottom plate 110 of the bracket, the fixed connection can be realized by 8 guide post fixing parts 108, the guide post fixing parts 108 herein are connected by bolts, and can also be set by those skilled in the art, and will not be described herein.
The lifting mechanism comprises a scissor type lifting platform 111, the scissor type lifting platform comprises a lifting platform support plate 118, scissor legs 119, a lead screw 120, a short linear guide rail 121 and the like, and it is understood that the specific structure of the scissor type lifting platform 111 belongs to the prior art, and the detailed description of the structure is omitted here, and the arrangement can be selected by a person skilled in the art.
The horizontal linear motion mechanism should drive the whole components such as the spraying frame 114 and the lifting mechanism to displace in the set horizontal direction so as to change the distance from the negative pressure fan 112 to the attitude adjustment assembly 2 and the blade simulation piece 3.
In the embodiment, the horizontal linear motion mechanism comprises two bottom supporting plates 107 which are parallel to each other, and the two bottom supporting plates 107 are fixedly connected through the bottom plate connecting plate 104 to form an integral structure, it can be understood that, in order to ensure the stable connection between the bottom supporting plates 107 and the bottom plate connecting plate 104, the small connecting plates 105 and the bolts can be used to complete the reinforcement of the bottom supporting plates 107 and the bottom plate connecting plate 104 after the splicing of the two is completed.
The support base plate 110 is arranged above the two bottom support plates 107 in a crossing manner, the linear guide rail 106 is arranged on the upper surface of the bottom support plate 107, and the extending direction of the linear guide rail 106 is the same as that of the bottom support plate 107, it can be understood that in order to realize the guiding of the support base plate 107 along the linear guide rail 106, a sliding block is arranged on the lower surface of the support base plate 110, and the sliding block is matched with the linear guide rail 106 to realize the guiding of the movement.
It should be noted that the spray head can spray water mist after mixing a water source and an air source, and the spray head needs to be provided with a water source system and an air source system. The water source system comprises a water tank, a water filter, a water pump and a liquid flow valve which are communicated through a hose 115 in sequence, liquid flowing out of the liquid flow valve is communicated with a water inlet of the spray head through a plurality of hoses 115 respectively, and a pressure gauge is arranged on the hose 115 between the liquid flow valve and the spray head. The air source system comprises an air compressor, an air filter and an air flow valve which are sequentially communicated, and the outlet of the air flow valve is respectively communicated with the air inlet end of the spray head through a multi-way hose 115. Pressure gauges should be provided at the air compressor, between the air filter and the liquid flow valve to monitor the air pressure. The nozzle is provided with a gas-liquid mixing cavity for uniformly mixing gas and water flow in equal proportion and then spraying out.
In this embodiment, because the freezing chamber is adopted to provide a low temperature environment, in order to prevent the spray head from freezing and affecting the spraying of the water mist, the water source is set to be hot water with a temperature higher than the set temperature, in this embodiment, the purified water in the water tank is heated to about 40 ℃ by the heating device and is conveyed by the hose 115 wrapped by the heat insulation material, so as to ensure that the liquid spray does not form small ice crystals in advance. In other embodiments, the water temperature in the water tank may be 50 ℃,60 ℃ or other values, which can be set by one skilled in the art.
The water in the water tank is heated to about 40 ℃ by a heater, the water is pressurized by a water pump after being filtered, and the output water pressure can be adjusted by a liquid flow valve; the air source is the first path, outdoor normal temperature air is compressed by an air compressor and then outputs high pressure airflow, and the high pressure airflow is mixed with the first path of water source in the atomizer 117 after being adjusted in pressure by an air filter and a gas flow valve to form water mist after being sprayed out.
In the embodiment, the spraying assembly 1 can move the position of the fan through the guide rails in the horizontal and vertical directions, so that the rapid adjustment of the water mist conveying distance and the coverage range is realized; the control and regulation of the content of the sprayed liquid water, the diameter of water mist particles and the incoming flow speed are quickly realized by controlling the water-air pressure ratio, the number of opened atomizing spray heads 117 and the rotating speed of a fan; the spraying assembly 1 has the characteristics of no limitation of weather conditions, capability of accurately reducing icing airflow conditions, adjustable parameters, small volume, high reliability and the like, can be used for anti-icing and deicing experiments of aircraft rotors, and can meet the requirements of experimental weather conditions.
A refrigeration component: it can be understood that, for the microthermal operating mode in simulation high altitude, test platform should be wholly in low temperature environment in this embodiment, consequently sets up the freezer (not shown in the figure) as refrigeration component, the temperature of freezer can be adjusted, paddle simulation piece 3, attitude adjustment subassembly 2, lifting unit 4 and spraying component 1 all set up in the freezer, lifting unit 4 and spraying component 1 realize supporting through the ground of freezer, borrow the freezer in this experiment and provide low temperature environment.
The attitude adjusting component: the attitude adjusting assembly 2 comprises a box body, a blade rotating shaft 207 and a horizontal rotating shaft 219, wherein the blade rotating shaft 207 penetrates through the box body and is rotatably connected with the box body, one end of the blade rotating shaft 207 is fixedly connected with the blade simulation part 3, and the other end of the blade rotating shaft is connected with the output end of a first rotary driving part arranged on the box body; paddle pivot 207 and horizontal rotating shaft 219 mutually perpendicular, horizontal rotating shaft 219 rotates with the box to be connected, be provided with second rotary driving piece in the box, second rotary driving piece is connected with box and horizontal rotating shaft 219, can drive the box and rotate around the axis of horizontal rotating shaft 219.
The box body comprises a first side plate 201 and a second side plate 202 which are arranged in parallel, the upper ends of the first side plate 201 and the second side plate 202 are fixedly connected with a top plate 203, the lower ends of the first side plate 201 and the second side plate 202 are fixedly connected with a bottom plate 204, and the first side plate 201, the second side plate 202, the top plate 203 and the bottom plate 204 form a box body structure together.
In this embodiment, the two ends of the first side plate 201 and the second side plate 202 are both provided with a first bending plate 205, the first bending plate 205 is provided with a first mounting hole and a first positioning hole, the two ends of the top plate 203 and the bottom plate 204 are both provided with a second bending plate 206, and the second bending plate 206 is provided with a second mounting hole matched with the first mounting hole and a second positioning hole matched with the first positioning hole.
Positioning pins can be inserted into the first positioning holes and the second positioning holes and used for positioning the relative positions of the top plate 203, the bottom plate 204, the first side plate 201 and the second side plate 202, fixing screws can be installed in the first mounting holes and the second mounting holes and used for fixing the first bending plate 205 and the second bending plate 206, and then the top plate 203 and the bottom plate 204 are fixedly connected with the first side plate 201 and the second side plate 202. By adopting the connection mode, the first side plate 201 and the second side plate 202 can be detached from the top plate 203 and the bottom plate 204, so that the overhaul and maintenance of each element in the box body are facilitated.
In other embodiments, the first side plate 201, the second side plate 202, the top plate 203 and the bottom plate 204 may also be fixed by welding, and the box body may not be disassembled, which is inconvenient for repairing and replacing internal components of the box body.
In this embodiment, the size of box can set up the processing according to actual need, satisfy scientific research institute and the indoor experimental demand of institution.
The box body is rotatably connected with a blade rotating shaft 207, two ends of the blade rotating shaft 207 penetrate through the top plate 203 and the bottom plate 204 and are rotatably connected with the top plate 203 and the bottom plate 204 through blade bearing seats 208 arranged on the top plate 203 and the bottom plate 204, the top plate 203 and the bottom plate 204 are connected with the blade bearing seats 208 through bolts, lugs 209 are arranged on the top plate 203 and the bottom plate 204 and used for positioning the installation of the blade bearing seats 208, and the fixing strength of the blade bearing seats 208 and the fixing strength of the top plate 203 and the fixing strength of the bottom plate 204 can be further enhanced by arranging the lugs 209.
The top of paddle pivot 207 is fixed with the sample mounting, the sample mounting includes the carousel, the carousel includes sleeve 210 and fixes two fixed plates 211 at sleeve 210 outer peripheral face, and two fixed plates 211 are 180 settings, sleeve 210 and paddle pivot 207 screw thread fixed connection, be provided with paddle simulation piece 3 on the fixed plate 211, the bottom surface of 3 one ends of paddle simulation piece and the last surface contact of fixed plate 211, clamp plate 213 has been placed to the top surface of 3 this ends of paddle simulation piece, clamp plate 213, it has fixing bolt to pass in paddle simulation piece 3 and the fixed plate 211, the last fixation nut of screwing of fixing bolt, fixing bolt and fixing nut compress tightly fixed with fixed plate 211, paddle simulation piece 3 and clamp plate 213, paddle simulation piece 3 can simulate the wing for place the material sample that awaits measuring.
The bottom end of the paddle rotating shaft 207 is connected with a first rotary driving part arranged on the box body, and the first rotary driving part can drive the rotation of the paddle rotating shaft 207.
The first rotary driving member comprises a first motor 214, the first motor 214 is fixed on a first support 215, the first support 215 adopts L type plates and comprises a first support 215 part and a second support 221 part which are perpendicular to each other, the first motor 214 is fixed on the first support 215 part, one end of the second support 221 part is integrally connected with the first support 215 part, two side faces of the other end are provided with connecting shafts, the connecting shafts are connected with horizontal bearing seats 216, and the two horizontal bearing seats 216 are respectively fixed on a first bending plate 205 of a first side plate 201 and a first bending plate 205 of a second side plate 202.
The output shaft of the first motor 214 is connected with the bottom end of the paddle rotating shaft 207 through a belt transmission mechanism, the belt transmission mechanism only needs to adopt the existing belt transmission mechanism and comprises a driving belt wheel 217, a driven belt wheel 218 and a transmission belt, the diameter of the driving belt wheel 217 is smaller than that of the driven belt wheel 218, and power can be transmitted to the paddle rotating shaft 207 after the output rotating speed of the output shaft of the first motor 214 is reduced.
A tensioning block 229 is further fixed on the bottom plate 204 of the box body through bolts, a tensioning bolt 230 is connected to the tensioning block 229 in a threaded mode, the tensioning bolt 230 can be in contact with the side face of the second support 221, the first support 215 can be driven to rotate around the connecting shaft by rotating the tensioning bolt 230, and then pre-tightening force adjustment is conducted on a belt of the belt transmission mechanism.
In other embodiments, the first motor 214 can also drive the blade rotating shaft 207 to rotate through the chain transmission mechanism, but the rotation of the wing is high-speed rotation, so that the output rotating speed of the first motor 214 is high, the transmission by the belt transmission mechanism is stable, and the stable operation of the whole testing device is ensured.
Horizontal rotating shaft 219 axis is perpendicular with paddle pivot 207 axis, and horizontal rotating shaft 219 is connected with elevating system, can be upper and lower elevating movement under elevating system's drive, and then adjusts the upper and lower position of paddle simulation piece 3, and first curb plate 201 and second curb plate 202 are passed respectively at horizontal rotating shaft 219 both ends, and horizontal rotating shaft 219 passes through the bearing rotation with first curb plate 201 and second curb plate 202 and is connected, be provided with the second rotary driving spare in the box, the second rotary driving spare is connected with horizontal rotating shaft 219 and box, can drive the box and rotate around the axis of horizontal rotating shaft 219.
The second rotary driving member includes a second motor 220, preferably, the second motor 220 is a stepping motor, the second motor 220 is fixedly connected to the top plate 203 of the box body through a second bracket 221, an output shaft of the second motor 220 is connected to an intermediate shaft 222 through a coupling, the second motor 220 can drive the intermediate shaft 222 to rotate, the intermediate shaft 222 is rotatably connected to two intermediate shaft bearing blocks 228, the intermediate shaft bearing blocks 228 are fixed to the top plate 203 of the box body, the two intermediate shaft bearing blocks 228 are used for supporting the intermediate shaft 222, the intermediate shaft 222 is connected to the horizontal rotating shaft 219 through a chain transmission mechanism, and the intermediate shaft 222 can drive the horizontal rotating shaft 219 to rotate through the chain transmission mechanism.
The chain transmission mechanism can be an existing chain transmission mechanism, and comprises a driving sprocket 223 fixed on the intermediate shaft 222, a driven sprocket 224 fixed on the horizontal rotating shaft 219 and a transmission chain wound between the driving sprocket 223 and the driven sprocket 224, wherein the diameter of the driving sprocket 223 is smaller than that of the driven sprocket 224.
The second motor 220 drives the intermediate shaft 222 and the driving sprocket 223 to rotate, and under the action of the driving chain and the driven sprocket 224, the second motor 220, the intermediate shaft 222 and the driving sprocket 223 can rotate around the axis of the horizontal rotating shaft 219, so as to drive the box body to rotate around the axis of the horizontal rotating shaft 219.
Horizontal rotating shaft 219 stretches out to the outside both ends of box and flat flange guide holder 225 fixed connection, flat flange guide holder 225 is fixed on elevating system.
The rotation of the blade simulation piece 3 around the axis of the blade rotating shaft 207 in the horizontal plane can be realized through the blade rotating shaft 207, the rotation of the blade simulation piece 3 around the axis of the horizontal rotating shaft 219 in the vertical plane can be realized through the horizontal rotating shaft 219 and the box body, the adjustment of the rotation and pitch angles of the wing is further realized, and the test requirements of sample measurement under various postures of the wing are met.
Horizontal rotating shaft 219 stretches out to be provided with electromagnetic braking ware 22626 between the outside tip of box and the box, electromagnetic braking ware 226 adopt current electromagnetic braking ware 226 can, including fixed part and braking portion, the fixed part is fixed on the box, braking portion and horizontal rotating shaft 219 key-type connection, electromagnetic braking ware 226 circular telegram back, fixed part and braking portion can the actuation fixed, because horizontal rotating shaft 219 and braking portion are fixed, consequently can brake the rotation of box, make horizontal rotating shaft 219 and box rotate and fix after setting for the position, keep the gesture, satisfied the test demand of sample performance under the different gestures of wing.
In this embodiment, the axis of the paddle rotating shaft 207 and the axis of the horizontal rotating shaft 219 are respectively disposed on two sides of the geometric center line of the box, so that the overall stability of the testing device can be maintained.
The lifting mechanism comprises a bottom beam 401, two ends of the bottom beam 401 are fixedly welded with vertically arranged mounting plates 402, a lead screw 404 lifting mechanism is fixed on the mounting plates 402, the lead screw 404 lifting mechanism is connected with a support frame 406 and can drive the support frame 406 to move up and down, the lead screw 404 lifting mechanism only adopts the existing lead screw 404 lifting mechanism, the lifting mechanism comprises a third motor 403 fixed on the top of the mounting plates 402, an output shaft of the third motor 403 is connected with one end of the lead screw 404 and can drive the lead screw 404 to rotate, the other end of the lead screw 404 is rotatably connected with the mounting plates 402 through a bearing, the lead screw 404 is connected with a first sliding block 405, the first sliding block 405 is fixedly connected with the support frame 406, the lead screw 404 can drive the first sliding block 405 to move up and down along the axial direction of the lead screw 404, and a first guide column 407 is further penetrated in the first sliding block 405, two ends of the first guide column 407 are fixedly connected with the mounting plate 402, and are used for guiding the lifting motion of the slider.
Two anti-tilt plates 408 are fixed to the front side face and the rear side face of the bottom beam 401, one end of each anti-tilt plate 408 is welded and fixed to the bottom beam 401, the other end of each anti-tilt plate 408 can be fixedly connected with the foundation through an anchor bolt 409, the anti-tilt plates 408 are used for preventing the lifting mechanism from toppling along a first direction perpendicular to the bottom beam 401, an anti-tilt tripod 410 is fixed to the outer side face of the mounting plate 402, the anti-tilt tripod 410 can be fixedly connected with the foundation through the anchor bolt 409, and the anti-tilt tripod 410 can prevent the lifting mechanism from toppling along a second direction perpendicular to the first direction.
The support frame 406 is of a trapezoidal frame structure formed by welding a plurality of angle steels, one end of the support frame is fixedly connected with the first slider 405, the other end of the support frame is fixedly connected with the second slider through a L-type connecting plate 411, the second slider is slidably connected with the second guide column 413, the second guide column 413 is fixed on the guide column fixing pipe 414, the guide column fixing pipe 414 is fixedly connected with the anti-tilt plate 408, the second guide column 413 is fixedly arranged, the two guide column fixing pipes 414 are fixedly connected with two ends of the connecting angle steel 415, a stiffening angle steel 416 is arranged between the guide column fixing pipe 414 and the anti-tilt plate 408, the structural stability of the support frame is enhanced by the connecting angle steel 415 and the stiffening angle steel 416, and the second guide column 413 is used for guiding the lifting movement of the support frame 406.
Through the setting of anti-tilt 408, anti-tilt tripod 410, support frame 406 and second guide post 413, cooperation rag bolt 409 has guaranteed elevating system's stability, and then has guaranteed whole testing arrangement's stability.
And a guide seat fixing plate 417 is installed on the supporting frame, and the guide seat fixing plate 417 is fixedly connected with the flat flange guide seat 225, so that the fixed connection of the lifting mechanism and the two ends of the horizontal rotating shaft 219 is realized.
In this embodiment, the outer peripheral surface of the blade rotating shaft 207 is fixed with a conductive slip ring 227, the conductive slip ring 227 can rotate along with the blade rotating shaft 207, the conductive slip ring 227 is connected with an output line of a detection element, the detection element is used for being installed on the blade simulation piece 3 to detect the performance of a sample material, the conductive slip ring 227 is in contact with an electric brush, the electric brush is fixed inside a box body, in this embodiment, the electric brush is fixed on the bottom plate 204, the electric brush can be connected with external data acquisition equipment through a connecting line, a signal detected by the detection element can be transmitted to the external data acquisition equipment through the output line, the conductive slip ring 227, the electric brush and the connecting line, and the external data acquisition equipment can analyze and process the signal to obtain the.
Through setting up conductive slip ring 227 and brush, solved along with paddle simulation 3 pivoted detecting element's signal acquisition problem, satisfied the experimental requirement.
When the test box works, a test sample is fixed on the blade simulation piece 3, the detection element is arranged on the blade simulation piece 3, the output line of the detection element is connected with the conductive slip ring 227, and the electric brush and external data acquisition equipment can be connected through a connecting line.
The first motor 214 works, and can drive the blade rotating shaft 207 to rotate through the belt transmission mechanism, so that the two blade simulation pieces 3 are driven to rotate, the rotation state of the wing is simulated, and a test is performed on a sample material in the rotation state of the wing.
The second motor 220 works, and after the second rotary driving piece drives the box body to rotate to a set angle, the electromagnetic brake 226 works to stop rotating the box body, so that the blade simulation piece 3 keeps the posture of the set pitching angle, and a test is performed on a sample material.
The third motor 403 works to drive the horizontal rotating shaft 219, the box body, the sample fixing part and other elements to do lifting motion, so that the lifting of the wing is simulated, and the wing can test sample materials at different heights.
The test box of this embodiment, simple structure, occupation of land space is little, and the cost of manufacture is low, only can test through operation first motor 214, second motor 220 and third motor 403, easy operation, difficult incident that takes place has satisfied the sample material test demand under the different gestures of wing moreover, and the test result is accurate, has reference value more.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. A test platform for an anti-icing material test of a helicopter rotor blade is characterized by comprising a base;
the blade simulation piece is of a long rod-shaped structure, and the surface of the blade simulation piece can be coated with anti-icing paint;
the attitude adjusting assembly can rotate along a horizontal shaft, the blade simulation piece is driven by a first rotary driving piece to rotate, the first rotary driving piece is supported by the attitude adjusting assembly, and the rotating axis of the blade simulation piece is perpendicular to the horizontal axis;
a horizontal shaft in the posture adjusting assembly is connected with a lifting assembly to realize support, and the lifting assembly can drive the posture adjusting assembly to lift in the vertical direction;
the spraying subassembly, the spraying subassembly can spray water smoke to the paddle simulation piece to the condition of running into high humid air current when simulating the paddle and rotating, the horizontal distance between spraying subassembly and the paddle simulation piece can be adjusted and fixed, the height of spraying subassembly can be adjusted and fixed, with the scope that changes water smoke and spray.
2. A test platform for a helicopter rotor blade anti-icing material test according to claim 1, wherein the spraying assembly comprises a spraying frame, wherein a negative pressure air fan is installed in the spraying frame, an atomizer is installed on one side of the negative pressure air fan, the atomizer is communicated with a pressure water source to spray water mist, and the negative pressure air fan can drive the water mist sprayed by the atomizer to move along a set direction to form a high humidity air flow.
3. A test platform for testing an anti-icing material of a helicopter rotor blade according to claim 2, wherein the bottom of the spray frame is connected to a lifting mechanism, the lifting mechanism drives the spray frame to move up and down to change the height of the high humidity air flow in the vertical direction, the bottom of the lifting mechanism is connected to a horizontal linear motion mechanism, and the horizontal linear motion mechanism can drive the lifting mechanism and the spray frame to move in a direction away from or close to the blade simulator.
4. A test platform for testing anti-icing materials for helicopter rotor blades according to claim 2, wherein said spray assembly comprises a water tank and an air compressor, said water tank is in communication with a water pump, said water pump is in communication with an atomizing spray head through a water pipe, said water pipe is fitted with a liquid flow valve;
the air compressor is respectively communicated with the plurality of atomizing nozzles through air pipes, and each air pipe is provided with an air flow valve;
the liquid flow valve and the gas flow valve can be matched for use to change the proportion of gas and liquid sprayed out from the atomizing nozzle, and further change the water content of the high-humidity airflow.
5. The test platform for the test of the anti-icing material of the helicopter rotor blade according to claim 1, further comprising a refrigeration assembly, wherein the refrigeration assembly comprises a freezing chamber, the temperature of the freezing chamber can be adjusted, the blade simulation piece, the attitude adjustment assembly, the lifting assembly and the spraying assembly are all arranged in the freezing chamber, and the lifting assembly and the spraying assembly are supported through the ground of the freezing chamber.
6. The test platform for the test of the anti-icing material of the helicopter rotor blade according to claim 1, wherein the attitude adjustment assembly comprises a box body, a blade rotating shaft and a horizontal rotating shaft, the blade rotating shaft penetrates through the box body and is rotatably connected with the box body, one end of the blade rotating shaft is fixedly connected with the blade simulating member, and the other end of the blade rotating shaft is connected with an output end of a first rotary driving member installed on the box body;
paddle pivot and horizontal rotating shaft mutually perpendicular, horizontal rotating shaft and box rotate to be connected, be provided with second rotary driving piece in the box, second rotary driving piece is connected with box and horizontal rotating shaft, can drive the box and rotate around horizontal rotating shaft's axis.
7. The test platform for the test of the anti-icing material of the helicopter rotor blade according to claim 6, wherein the first rotary driving member comprises a first motor, the first motor is fixed on a first bracket, the first bracket is rotatably connected with the box body, an output shaft of the first motor is connected with the rotating shaft of the blade through a belt transmission mechanism, and the first motor can drive the rotating shaft of the blade to rotate through the belt transmission mechanism.
8. The test platform for the test of the anti-icing material of the helicopter rotor blade according to claim 7, wherein the bottom of the box body is provided with a tensioning block, the tensioning block is connected with a tensioning bolt through threads, and the tensioning bolt is in contact with the first bracket and can drive the first bracket to move so as to adjust the pretightening force of the transmission belt of the belt transmission mechanism.
9. The test platform for testing the anti-icing material of the helicopter rotor blade according to claim 6, wherein the second rotary driving member comprises a second motor, the second motor is fixed inside the box body through a second bracket, the second motor is connected with an intermediate shaft, the intermediate shaft is fixedly connected with the driving sprocket, the horizontal rotating shaft is fixed with a driven sprocket, and a transmission chain is connected between the driving sprocket and the driven sprocket in a winding manner.
10. The test platform for the test of the anti-icing material of the helicopter rotor blade according to claim 1, wherein a conductive slip ring is fixed on the outer peripheral surface of the blade rotating shaft, the conductive slip ring can be connected with an output line of a detection element mounted on the blade simulator, the conductive slip ring is connected with a brush fixedly arranged inside the attitude adjusting assembly, the brush can be connected with an external data acquisition device through a connecting line, and a signal detected by the detection element can be transmitted to the external data acquisition device through the conductive slip ring and the brush.
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| CN202010334285.8A CN111409859B (en) | 2020-04-24 | 2020-04-24 | Test platform for helicopter rotor blade anti-icing material test |
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| CN202010334285.8A CN111409859B (en) | 2020-04-24 | 2020-04-24 | Test platform for helicopter rotor blade anti-icing material test |
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| CN111409859B (en) | 2021-06-11 |
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