A tilt-rotor platform

Abstract

The present invention discloses a tilt-rotor platform, which relates to the technical field of rotorcraft and includes at least one rotor mounting mechanism; the tilt-rotor platform includes a tilt mechanism and a rotation mechanism; the tilt mechanism includes an input sleeve, an output sleeve, and a tilt driver; the upper end of the input sleeve and the lower end of the output sleeve are rotatably connected about a first axis; a traction portion is provided on the outer wall of the output sleeve, and the tilt driver can pull the traction portion to rotate the output sleeve about the first axis; the rotation mechanism includes a rotation driver, an input drive shaft, a universal joint assembly, and an output drive shaft; the output end of the rotation driver is fixedly connected to one end of the input drive shaft; one end of the input drive shaft is fixedly connected to one end of the universal joint assembly, and one end of the output drive shaft is fixedly connected to one end of the universal joint assembly. This enables the rotor to tilt, better simulates the tilt transition state of the tilt-rotor, and ensures that the test results are more in line with actual conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of rotorcraft, and in particular to a tiltrotor platform. Background Art

[0002] Multi-rotor aircraft have the ability to take off and land vertically and fly forward at high speeds, especially tilt-rotor aircraft, which are more reliable and have broad application prospects in military and civilian fields. With the rapid development of radar technology used to detect and identify tilt-rotor aircraft targets on the battlefield, higher requirements are placed on the stealth performance of tilt-rotor aircraft. An important indicator for measuring the stealth capability of tilt-rotor aircraft is the Radar Cross Section (RCS). The larger the RCS, the worse the stealth capability. When developing tilt-rotor aircraft, it is necessary to consider the radar stealth design of the aircraft. The tilt-rotor is an important radar scattering source in the aircraft, and the radar target characteristics of the tilt-rotor need to be tested in depth.

[0003] To reduce testing costs, RCS testing is typically performed on a scaled-down model of the target in a microwave anechoic chamber. Since the tilt-rotors on the left and right sides of an aircraft are symmetrically positioned, testing can focus on one rotor. Currently, most microwave anechoic chambers use single-rotor or coaxial dual-rotor (non-tilting) platforms for testing. However, the complex structure of tilt-rotor systems and the presence of rotor tilt mechanisms make it difficult to simultaneously account for these factors in a microwave anechoic chamber. Therefore, a tilt-rotor platform capable of supporting tilt functionality was designed to enable dynamic RCS testing of single and dual rotors. Summary of the Invention

[0004] The purpose of the present invention is to provide a tilt-rotor platform to solve the problems existing in the above-mentioned prior art, so that the rotor can tilt, so that it can better simulate the tilt transition state of the tilt-rotor and make the test results more in line with the actual situation.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a tilt-rotor platform, comprising at least one rotor mounting mechanism; the rotor mounting mechanism comprises a tilt mechanism and a rotation mechanism; the tilt mechanism comprises an input sleeve, an output sleeve and a tilt drive; the input sleeve is fixedly arranged in a vertical posture, the upper end of the input sleeve is connected to the lower end of the output sleeve for rotation around a first axis, and the first axis is parallel to a horizontal plane; a traction portion is provided on the outer side wall of the output sleeve, the output end of the tilt drive can be connected to the traction portion, and the tilt drive can pull the traction portion and cause the output sleeve to rotate around the first axis; The rotating mechanism includes a rotary driver, an input transmission shaft, a universal joint assembly and an output transmission shaft; the output end of the rotary driver is fixedly connected to one end of the input transmission shaft, and the rotary driver and the input transmission shaft are arranged in the input sleeve; the output transmission shaft is rotatably arranged in the output sleeve, one end of the input transmission shaft is fixedly connected to one end of the universal joint assembly, and one end of the output transmission shaft is fixedly connected to one end of the universal joint assembly; the universal joint assembly corresponds to the position where the input sleeve and the output sleeve are rotatably connected; the other end of the output transmission shaft is used for mounting a rotor.

[0007] Preferably, the tilting drive includes a driving motor and a steel wire rope; a counterweight is fixedly provided on the output sleeve, and the counterweight is located on the side of the first axis away from the traction part; a first ring is provided on the input sleeve at a position corresponding to the traction part of the output sleeve, and one end of the steel wire rope passes through the first ring and is fixedly connected to the traction part; and the other end of the steel wire rope is fixed and wound around the output shaft of the driving motor.

[0008] Preferably, at the same side as the counterweight block, one end of the input sleeve close to the output sleeve and one end of the output sleeve close to the input sleeve are both provided with limiting cuts; when the limiting cuts of the input sleeve are in contact with the limiting cuts of the output sleeve, the angle between the axis of the input sleeve and the axis of the output sleeve is 90°.

[0009] Preferably, there are two rotor mounting mechanisms; one of the rotor mounting mechanisms is fixed in position, and the other rotor mounting mechanism is arranged on the output end of the moving mechanism; the output end of the moving mechanism can drive the rotor mounting mechanism to move in position on a horizontal plane.

[0010] Preferably, the moving mechanism includes a first direction moving component, a second direction moving component and a mounting platform plate; the first direction moving component includes a first direction fixing frame, a first direction rotating screw, a first direction screw nut and a first direction driver; the first direction fixing frame is fixed in position, and the first direction rotating screw is rotatably connected to the first direction fixing frame around the first direction axis; the first direction screw nut is rotatably connected to the first direction rotating screw, and the output end of the first direction driver is fixedly connected to the first direction rotating screw; the second direction moving component includes a second direction fixing frame, a second direction rotating screw, a second direction screw nut and a second direction driver; the second direction fixing frame is slidably set on the first direction fixing frame along the axis of the first direction rotating screw ; The second direction fixing frame is fixedly connected to the first direction screw nut, and the second direction rotating screw is rotatably connected to the second direction fixing frame around the second direction axis; the second direction screw nut is rotatably connected to the second direction rotating screw, and the output end of the second direction driver is fixedly connected to the second direction rotating screw; the axis of the first direction rotating screw is perpendicular to the axis of the second direction rotating screw, and the axis of the second direction rotating screw is parallel to the first axis; the mounting platform plate is slidably set on the second direction fixing frame along the axis of the second direction rotating screw; the mounting platform plate is fixedly connected to the second direction screw nut; the mounting platform plate forms the output end of the moving mechanism, and the mounting platform plate is used to install the rotor mounting mechanism.

[0011] Preferably, a base is fixedly provided below the fixed rotor mounting mechanism; in the vertical direction, the fixed rotor mounting mechanism and the rotor mounting mechanism located at the output end of the moving mechanism are at the same height.

[0012] Preferably, the input transmission shaft is rotatably connected to the input sleeve via at least one first bearing, and the output transmission shaft is rotatably connected to the output sleeve via at least two second bearings.

[0013] Preferably, the first direction fixing frame includes a front end plate, a rear end plate and two first side slide rails; the front end plate and the rear end plate are arranged in parallel, and the two ends of the front end plate and the rear end plate are fixedly connected by one of the first side slide rails respectively; one end of the first direction rotating screw is rotatably connected to the front end plate, and the other end of the first direction rotating screw is rotatably connected to the rear end plate; a sliding groove is provided on the first side slide rail, and the corresponding two ends of the second direction fixing frame are respectively slidably provided in the sliding groove.

[0014] Preferably, the second direction fixing frame includes a first side panel, a second side panel, a bottom panel and two second side slide rails; the first side panel and the second side panel are arranged in parallel, and the first side panel and the second side panel are both fixedly connected to the bottom panel; one end of the second direction rotating screw is rotatably connected to the first side panel, and the other end of the second direction rotating screw is rotatably connected to the second side panel; the two ends of each second side slide rail are respectively fixedly connected to the first side panel and the second side panel, and a second side slide rail is respectively provided on both sides of the second direction rotating screw; at least one slider is slidably provided on each second side slide rail, and each slider is fixedly connected to the mounting platform plate.

[0015] Preferably, a second ring is fixedly provided at one end of the input sleeve close to the drive motor; the end of the wire rope away from the traction part passes through the first ring and the second ring in sequence and is then fixed and wound around the output shaft of the drive motor.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The tilt-rotor platform provided by the present invention realizes the tilt function of the rotor by adopting a rotatable structure formed by an input sleeve and an output sleeve, and cooperating with a rotating mechanism formed by an input drive shaft, a universal joint assembly and an output drive shaft provided inside for driving the rotation of the rotor. It can simulate different flight attitudes and angles of the rotor, thereby enabling more comprehensive testing of the RCS characteristics of the rotorcraft under various actual flight conditions; based on the various complex attitude changes and dynamic processes that the rotorcraft will experience during actual flight, the tilt function can better simulate these real flight conditions, thereby obtaining RCS data that is closer to the actual situation, which helps to improve the accuracy and reliability of the test results and provide a more valuable reference for the design and improvement of the aircraft; it can better simulate the tilt transition state of the tilt-rotor aircraft, so that the test results are in line with the actual situation.

[0018] Furthermore, a driving motor and a steel wire rope are used to pull the output sleeve to rotate around the first axis, thereby changing the tilting angle; and when combined with a counterweight block, the counterweight block can reversely limit the rotation of the output sleeve around the first axis; the two work together to achieve a stable change in the tilting angle of the output sleeve.

[0019] Furthermore, the setting of the limiting cutout can achieve the function of limiting the rotation of the output sleeve and the input sleeve at a position of 90 degrees, thereby ensuring the maximum position of the rotor tilt.

[0020] Furthermore, the front rotor can be installed on the fixed-position rotor mounting mechanism, and the rear rotor can be installed on the rotor mounting mechanism on the output end of the moving mechanism. The output end of the moving mechanism can drive the rear rotor to move in position, thereby realizing the function of adjusting the distance between the two rotors. The rotor mounting mechanism used to install the front rotor can be used alone to simulate the dynamic tilting of a single rotor in RCS testing; and the use of two rotor mounting mechanism structures can simulate the dynamic tilting of dual rotors. Moreover, as there are more and more design schemes for tilt-rotor aircraft, the function of adjusting the distance between the two rotors can take into account the mechanical factors of the rotor distance during RCS testing, without having to make benches with different distances multiple times, thereby reducing costs.

[0021] Furthermore, the moving mechanism adopts a first direction moving component and a second direction moving component, each of which realizes position movement in two mutually perpendicular directions, thereby realizing precise adjustment of the distance between the two rotor assemblies.

[0022] Furthermore, the setting of the base can keep the installation height of the front rotor consistent with the installation height of the rear rotor, making it more suitable for actual installation effects for testing.

[0023] Furthermore, the input transmission shaft and the output transmission shaft are connected to the corresponding input sleeve and output sleeve through the corresponding first bearing and second bearing respectively, which can realize the stable rotation of the input transmission shaft and the output transmission shaft and ensure the transmission effect.

[0024] Furthermore, the first direction fixing frame is composed of a front end plate, a rear end plate and two first side slide rails. Its structure is simple, stable and reliable, and the second direction fixing frame can slide stably through the sliding grooves on the first side slide rails and the sliding of the second direction fixing frame.

[0025] Furthermore, the sliders on the two second side slide rails on the second direction fixing frame are fixed together with the mounting platform plate, so that the mounting platform plate can stably move along the axis direction of the second direction rotating screw rod.

[0026] Furthermore, the provision of the second ring enables the steel wire rope to pull the output sleeve more stably, ensuring its stable rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1A schematic diagram of the overall structure of the tilt-rotor platform provided by the present invention;

[0029] Figure 2 A schematic cross-sectional view of the rotor mounting mechanism in the tilt-rotor platform provided by the present invention;

[0030] Figure 3 This is a schematic structural diagram of the input sleeve in the tiltrotor platform provided by the present invention;

[0031] Figure 4 This is a schematic structural diagram of the output sleeve in the tilt-rotor platform provided by the present invention;

[0032] Figure 5 A schematic structural diagram of the moving mechanism in the tilt-rotor platform provided by the present invention;

[0033] Figure 6 A schematic diagram of a portion of the structure of a second-direction moving assembly in a tiltrotor platform provided by the present invention;

[0034] Figure 7 A schematic structural diagram of a slider in a tilt-rotor platform provided by the present invention;

[0035] Figure 8 This is a schematic structural diagram of the first side rail in the tilt-rotor platform provided by the present invention;

[0036] Figure 9 This is a schematic structural diagram of the second side rail in the tilt-rotor platform provided by the present invention;

[0037] Figure 10 A schematic diagram of the tilting process of a single rotor mounting mechanism in the tilt-rotor platform provided by the present invention;

[0038] Figure 11 This is a schematic diagram of the tilting process of the two rotor mounting mechanisms in the tilt-rotor platform provided by the present invention.

[0039] In the picture:

[0040] 100-tilt rotor platform;

[0041] 10-Rotor mounting mechanism; 11-Tilt mechanism; 111-Input sleeve; 112-Output sleeve; 113-Drive motor; 114-Wire rope; 115-Counterweight; 116-Traction unit; 117-First collar; 118-Second collar; 119-Limiting notch; 12-Rotation mechanism; 121-Rotation driver; 122-Input drive shaft; 123-Universal joint assembly; 1231-First conical tooth; 1232-Conical gear ring; 1233-Second conical tooth; 1234-Rotation shaft; 124-Output drive shaft; 13-First bearing; 14-Second bearing;

[0042] 20 - first direction moving assembly; 21 - first direction fixing frame; 211 - front end plate; 212 - first side slide rail; 213 - rear end plate; 214 - slide slot; 22 - first direction rotating screw;

[0043] 30 - second direction moving assembly; 31 - second direction fixing frame; 311 - first side plate; 312 - second side plate; 313 - bottom plate; 314 - second side slide rail; 315 - slider; 32 - second direction rotating screw; 33 - second direction screw nut;

[0044] 40-Install the platform board;

[0045] 50-base. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] The purpose of the present invention is to provide a tilt-rotor platform to solve the problems existing in the prior art, so that the rotor can perform tilting movements, so that it can better simulate the tilt transition state of the tilt-rotor and make the test results more in line with the actual situation.

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] Example 1

[0050] This embodiment provides a tilt-rotor platform 100, which is mainly used for RCS testing of multi-rotor aircraft, but not limited to such as Figures 1 to 11As shown, it includes at least one rotor mounting mechanism 10; the rotor mounting mechanism 10 includes a tilting mechanism 11 and a rotating mechanism 12; the tilting mechanism 11 includes an input sleeve 111, an output sleeve 112 and a tilting drive; the input sleeve 111 is fixedly arranged in a vertical posture, and the upper end of the input sleeve 111 is connected to the lower end of the output sleeve 112 for rotation around a first axis, and the first axis is parallel to the horizontal plane; a traction portion 116 is provided on the outer wall of the output sleeve 112, and the output end of the tilting drive can be connected to the traction portion 116, and the tilting drive can pull the traction portion 116 and make the output sleeve 112 rotate around the first axis; the rotating mechanism 12 includes a rotating drive 121, input drive shaft 122, universal joint assembly 123 and output drive shaft 124; the output end of the rotary driver 121 is fixedly connected to one end of the input drive shaft 122, and the rotary driver 121 and the input drive shaft 122 are arranged in the input sleeve 111; the output drive shaft 124 is rotatably arranged in the output sleeve 112, one end of the input drive shaft 122 is fixedly connected to one end of the universal joint assembly 123, and one end of the output drive shaft 124 is fixedly connected to one end of the universal joint assembly 123; the universal joint assembly 123 corresponds to the position where the input sleeve 111 and the output sleeve 112 are rotatably connected; the other end of the output drive shaft 124 is used to mount the rotor.

[0051] By adopting a rotatable structure formed by an input sleeve 111 and an output sleeve 112, and cooperating with a rotating mechanism 12 for driving the rotation of the rotor formed by an input drive shaft 122, a universal joint assembly 123 and an output drive shaft 124, the tilt function of the rotor can be achieved. It can simulate different flight attitudes and angles of the rotor, so as to more comprehensively test the RCS characteristics of the rotorcraft under various actual flight conditions; based on the various complex attitude changes and dynamic processes that the rotorcraft will experience in actual flight, the tilt function can better simulate these real flight conditions, thereby obtaining RCS data that is closer to the actual situation, which helps to improve the accuracy and reliability of the test results and provide a more valuable reference for the design and improvement of the aircraft; it can better simulate the tilt transition state of the tiltrotor aircraft, so that the test results are in line with the actual situation.

[0052] The following is a description of the structure of the tilting mechanism 11:

[0053] Among the optional solutions of this embodiment, it is more preferred that Figure 2 and Figure 10As shown, the tilt actuator includes a drive motor 113 and a wire rope 114. A counterweight 115 is fixedly mounted on the output sleeve 112, located on the side of the first axis away from the traction portion 116. A first ring 117 is mounted on the input sleeve 111 at a position corresponding to the traction portion 116 of the output sleeve 112. One end of the wire rope 114 passes through the first ring 117 and is fixedly connected to the traction portion 116. The other end of the wire rope 114 is fixed to and wrapped around the output shaft of the drive motor 113. The drive motor 113 and wire rope 114 can pull the output sleeve 112 to rotate about the first axis, thereby changing the tilt angle. In combination with the counterweight 115, the counterweight 115 can reversely restrict the rotation of the output sleeve 112 about the first axis. Together, the two achieve stable changes in the tilt angle of the output sleeve 112.

[0054] Specifically, the traction portion 116 has the same structure as the first ring 117 .

[0055] Among the optional solutions of this embodiment, it is more preferred that Figure 2 and Figure 10 As shown, a second collar 118 is fixedly mounted on the end of the input sleeve 111 located near the drive motor 113. The end of the wire rope 114, located away from the traction portion 116, passes through the first collar 117 and the second collar 118 in sequence before being fixed and wound around the output shaft of the drive motor 113. The provision of the second collar 118 enables the wire rope 114 to more stably pull the output sleeve 112, ensuring its stable rotation.

[0056] Among them, the relevant structural description of the rotating mechanism 12 is as follows:

[0057] Specifically, the universal joint assembly 123 includes but is not limited to the following two structures:

[0058] The first type: the universal joint assembly 123 is a flexible shaft, one end of the flexible shaft is fixedly connected to the input transmission shaft 122, and the other end of the flexible shaft is fixedly connected to the output transmission shaft 124; at this time, for the rotational connection structure between the input sleeve 111 and the output sleeve 112, two opposing rotational lugs are provided on the input sleeve 111 and the output sleeve 112, and the rotational lugs are provided with a shaft pin hole, and each rotational lug of the input sleeve 111 and the corresponding rotational lug of the output sleeve 112 are connected together by passing an axle pin through the shaft pin hole.

[0059] The second type is that the universal joint assembly 123 includes a first conical tooth 1231, a conical gear ring 1232, and a second conical tooth 1233; the first conical tooth 1231 is fixedly arranged at the end of the input transmission shaft 122, the axis of the conical gear ring 1232 is coaxial with the first axis, and the conical gear ring 1232 can rotate on its own; the second conical tooth 1233 is fixedly arranged at the end of the output transmission shaft 124; the first conical tooth 1231 and the second conical tooth 1233 are both engaged with the conical gear ring 1232 for transmission; at this time, for the rotation between the input sleeve 111 and the output sleeve 112 The dynamic connection structure can be that two relative rotating ears are provided on the input sleeve 111 and the output sleeve 112, and the rotating ears are provided with axle pin holes, and a rotating shaft 1234 is passed through the four axle pin holes; when the rotating shaft 1234 is set in a manner that can rotate on its own, the conical gear ring 1232 can be fixed on the rotating shaft 1234, and when the rotating shaft 1234 is set in a manner that cannot rotate on its own, the conical gear ring 1232 is rotatably set on the rotating shaft 1234 so as to be able to rotate on its own, such as being rotatably connected to the rotating shaft 1234 through a bearing.

[0060] Specifically, the rotation driver 121 may be a motor, and an opening is provided on the side wall of the lower end of the input sleeve 111 at a position corresponding to the rotation driver 121 .

[0061] Among the optional solutions of this embodiment, it is more preferred that Figures 1 to 4 As shown, on the same side as counterweight 115, limiting notches 119 are provided on both the end of input sleeve 111 proximal to output sleeve 112 and the end of output sleeve 112 proximal to input sleeve 111. When limiting notches 119 of input sleeve 111 and output sleeve 112 align, the angle between the axis of input sleeve 111 and the axis of output sleeve 112 is 90°. Limiting notches 119 restrict rotation at a 90° angle between output sleeve 112 and input sleeve 111, ensuring the maximum rotor tilt position.

[0062] Specifically, the limiting cutout 119 has a 45° slope, ensuring that the rotation range of the input sleeve 111 and the output sleeve 112 is limited to 0° to 90°.

[0063] Among the optional solutions of this embodiment, it is more preferred that Figure 2 As shown, the input transmission shaft 122 is rotatably connected to the input sleeve 111 via at least one first bearing 13, and the output transmission shaft 124 is rotatably connected to the output sleeve 112 via at least two second bearings 14. The input transmission shaft 122 and the output transmission shaft 124 are respectively connected to the corresponding input sleeve 111 and output sleeve 112 via corresponding first bearings 13 and second bearings 14, which can achieve stable rotation of the output transmission shaft 124 and ensure transmission effect.

[0064] The relevant structural setting description when the number of the rotor mounting mechanisms 10 is 2 is as follows:

[0065] Among the optional solutions of this embodiment, it is more preferred that Figure 1 and Figure 11 As shown, there are two rotor mounting mechanisms 10; one rotor mounting mechanism 10 is fixed in position, and the other rotor mounting mechanism 10 is mounted on the output end of a movable mechanism; the output end of the movable mechanism can drive the rotor mounting mechanism 10 to move horizontally. The fixed rotor mounting mechanism 10 can be used to mount the front rotor, while the rotor mounting mechanism 10 on the output end of the movable mechanism can be used to mount the rear rotor. The output end of the movable mechanism can drive the rear rotor to move, thereby adjusting the distance between the two rotors. The rotor mounting mechanism 10 used to mount the front rotor can be used alone to simulate the dynamic tilt of a single rotor in RCS testing; the use of two rotor mounting mechanisms 10 can simulate the dynamic tilt of two rotors. As there are more and more design options for tiltrotor aircraft, the ability to adjust the distance between the two rotors can take into account the mechanical factors of rotor spacing during RCS testing, eliminating the need to repeatedly manufacture test rigs with different spacings, thereby reducing costs.

[0066] Among the optional solutions of this embodiment, it is more preferred that Figure 1 and Figure 10 and Figure 11 As shown, a base 50 is fixedly mounted below the fixed rotor mounting mechanism 10. Vertically, the fixed rotor mounting mechanism 10 and the rotor mounting mechanism 10 at the output end of the movable mechanism are at the same height. The placement of base 50 ensures that the installation height of the front rotor and the rear rotor are consistent, allowing for more accurate testing based on actual installation results.

[0067] Among the optional solutions of this embodiment, it is more preferred that Figure 1 、 Figures 5 to 9 and Figure 11As shown, the moving mechanism includes a first direction moving component 20, a second direction moving component 30 and a mounting platform plate 40; the first direction moving component 20 includes a first direction fixing frame 21, a first direction rotating screw 22, a first direction screw nut and a first direction driver; the first direction fixing frame 21 is fixed in position, and the first direction rotating screw 22 is connected to the first direction fixing frame 21 by rotating around the first direction axis; the first direction screw nut is rotatably connected to the first direction rotating screw, and the output end of the first direction driver is fixedly connected to the first direction rotating screw; the second direction moving component 30 includes a second direction fixing frame 31, a second direction rotating screw 32, a second direction screw nut 33 and a second direction driver; the second direction fixing frame 31 slides along the axis of the first direction rotating screw It is arranged on the first direction fixing frame 21; the second direction fixing frame 31 is fixedly connected to the first direction screw nut, and the second direction rotating screw is rotatably connected to the second direction fixing frame 31 around the second direction axis; the second direction screw nut 33 is rotatably connected to the second direction rotating screw, and the output end of the second direction driver is fixedly connected to the second direction rotating screw; the axis of the first direction rotating screw is perpendicular to the axis of the second direction rotating screw, and the axis of the second direction rotating screw is parallel to the first axis; the mounting platform plate 40 is slidably arranged on the second direction fixing frame 31 along the axis of the second direction rotating screw; the mounting platform plate 40 is fixedly connected to the second direction screw nut 33; the mounting platform plate 40 forms the output end of the moving mechanism, and the mounting platform plate 40 is used to install the rotor mounting mechanism 10. The moving mechanism adopts the first direction moving component 20 and the second direction moving component 30, each of which realizes position movement in two mutually perpendicular directions, and can realize precise adjustment of the distance between the two rotor assemblies.

[0068] Among the optional solutions of this embodiment, it is more preferred that Figure 1 and Figure 5 As shown, the first-direction fixed frame 21 includes a front plate 211, a rear plate 213, and two first side rails 212. The front plate 211 and the rear plate 213 are arranged in parallel, and the ends of the front plate 211 and the rear plate 213 are fixedly connected by a first side rail 212. One end of the first-direction rotating screw is rotatably connected to the front plate 211, and the other end of the first-direction rotating screw is rotatably connected to the rear plate 213. The first side rails 212 are provided with sliding grooves 214, and the corresponding ends of the second-direction fixed frame 31 are slidably disposed in the sliding grooves 214. The first-direction fixed frame 21 is composed of the front plate 211, the rear plate 213, and the two first side rails 212. Its structure is simple, stable, and reliable. The sliding grooves 214 on the first side rails 212 and the sliding of the second-direction fixed frame 31 ensure stable sliding of the second-direction fixed frame 31.

[0069] Among the optional solutions of this embodiment, it is more preferred that Figure 1and Figure 5 As shown, the second-direction fixed frame 31 includes a first side plate 311, a second side plate 312, a bottom plate 313, and two second side rails 314. The first side plate 311 and the second side plate 312 are arranged parallel to each other, and the first side plate 311 and the second side plate 312 are both fixedly connected to the bottom plate 313. One end of the second-direction rotating screw is rotatably connected to the first side plate 311, and the other end of the second-direction rotating screw is rotatably connected to the second side plate 312. The two ends of each second side rail 314 are respectively fixedly connected to the first side plate 311 and the second side plate 312, and a second side rail 314 is provided on each side of the second-direction rotating screw. At least one slider 315 is slidably provided on each second side rail 314, and each slider 315 is fixedly connected to the mounting platform plate 40. The sliders 315 on the two second side rails 314 on the second-direction fixed frame 31 are fixed to the mounting platform plate 40, so that the mounting platform plate 40 can stably move along the axis of the second-direction rotating screw 32.

[0070] Among them, about other related settings:

[0071] Specifically, the base 50 and the first direction fixing frame 21 of the moving mechanism are both used to be fixed on the ground, and the central axis of the base 50 for the front rotor installation and the axis of the first direction rotating screw 22 corresponding to the rear rotor installation are located on the same plane.

[0072] Specifically, the RCS test of a single tilt rotor, such as Figure 10 As shown, it is mounted on a base 50. Since a counterweight 115 is provided on the output sleeve 112, when the wire rope 114 is loosened, the rotor can be tilted to a 90° position under the action of the counterweight 115. When the wire rope 114 is stretched, the output sleeve 112 tilts upward under the tension of the wire rope 114 until the rotor axis is vertical. The drive motor 113 then reverses, reducing the tension of the wire rope 114 and the tension on the output sleeve 112, causing the rotor to tilt downward until the rotor axis is flush with the ground.

[0073] Specifically, the RCS test of the tilting twin rotor, such as Figure 11As shown, a moving mechanism is added to the RCS test of a single tilt-rotor. The front-to-back, left-to-right, and left-to-right spacing of the mounting platform plate 40 is adjusted according to the scale of the scaled model. The second-direction rotating screw 32 is driven to rotate by a second-direction driver (e.g., a motor), driving the second-direction screw nut 33 to move left and right, which in turn drives the mounting platform plate 40. The movement distance L is: L = P*N (P is the screw pitch, N is the number of motor rotations). Similarly, after the first-direction rotating screw 22 is driven, it drives the second-direction fixing frame 31 to move forward and backward, controlling the front-to-back spacing between the two rotors and determining the rotor spacing for RCS testing. The tilt operation of the dual rotor is consistent with that of a single rotor. The scaled spacing is: R / r = D / d (the actual rotor radius is R, the scaled model rotor radius is r, the actual spacing of the dual rotors is D, and the scaled spacing is d).

[0074] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A tiltrotor platform, characterized in that: It includes at least one rotor mounting mechanism; the rotor mounting mechanism includes a tilting mechanism and a rotating mechanism; The tilt mechanism includes an input sleeve, an output sleeve, and a tilt actuator; the input sleeve is fixedly arranged in a vertical position, the upper end of the input sleeve is rotatably connected to the lower end of the output sleeve about a first axis, and the first axis is parallel to a horizontal plane; a traction portion is provided on the outer wall of the output sleeve, and the output end of the tilt actuator can be connected to the traction portion, and the tilt actuator can pull the traction portion to rotate the output sleeve about the first axis; The rotating mechanism includes a rotating driver, an input transmission shaft, a universal joint assembly and an output transmission shaft; The output end of the rotary driver is fixedly connected to one end of the input transmission shaft, and the rotary driver and the input transmission shaft are arranged in the input sleeve; the output transmission shaft is rotatably arranged in the output sleeve, and one end of the input transmission shaft is fixedly connected to one end of the universal joint assembly, and one end of the output transmission shaft is fixedly connected to one end of the universal joint assembly; the universal joint assembly corresponds to the position where the input sleeve and the output sleeve are rotatably connected; The other end of the output transmission shaft is used for mounting the rotor; The tilting actuator includes a drive motor and a steel wire rope; a counterweight is fixedly mounted on the output sleeve, the counterweight being located on a side of the first axis away from the traction portion; a first ring is mounted on the input sleeve at a position corresponding to the traction portion of the output sleeve, one end of the steel wire rope passes through the first ring and is fixedly connected to the traction portion; and the other end of the steel wire rope is fixedly mounted on and wound around the output shaft of the drive motor; At the same side as the counterweight block, one end of the input sleeve close to the output sleeve and one end of the output sleeve close to the input sleeve are both provided with limiting cuts; when the limiting cuts of the input sleeve are in contact with the limiting cuts of the output sleeve, the angle between the axis of the input sleeve and the axis of the output sleeve is 90°.

2. The tiltrotor platform according to claim 1, characterized in that: There are two rotor mounting mechanisms; One of the rotor mounting mechanisms is fixed in position, and the other rotor mounting mechanism is arranged on the output end of the moving mechanism; the output end of the moving mechanism can drive the rotor mounting mechanism to move in position on a horizontal plane.

3. The tiltrotor platform according to claim 2, characterized in that: The moving mechanism includes a first direction moving component, a second direction moving component and a mounting platform plate; The first direction moving assembly includes a first direction fixing frame, a first direction rotating screw, a first direction screw nut and a first direction driver; the first direction fixing frame is fixed in position, the first direction rotating screw is rotatably connected to the first direction fixing frame around a first direction axis; the first direction screw nut is rotatably connected to the first direction rotating screw, and the output end of the first direction driver is fixedly connected to the first direction rotating screw; The second direction moving assembly includes a second direction fixing frame, a second direction rotating lead screw, a second direction lead screw nut, and a second direction driver; the second direction fixing frame is slidably arranged on the first direction fixing frame along the axis of the first direction rotating lead screw; the second direction fixing frame is fixedly connected to the first direction lead screw nut, and the second direction rotating lead screw is rotatably connected to the second direction fixing frame around the second direction axis; the second direction lead screw nut is rotatably connected to the second direction rotating lead screw, and the output end of the second direction driver is fixedly connected to the second direction rotating lead screw; The axis of the first-direction rotating screw is perpendicular to the axis of the second-direction rotating screw, and the axis of the second-direction rotating screw is parallel to the first axis; The mounting platform plate is slidably arranged on the second direction fixing frame along the axis of the second direction rotating screw; the mounting platform plate is fixedly connected to the second direction screw nut; the mounting platform plate forms the output end of the moving mechanism, and the mounting platform plate is used to install the rotor mounting mechanism.

4. The tiltrotor platform according to claim 2, characterized in that: A base is fixedly provided below the fixed rotor mounting mechanism; In the vertical direction, the fixed rotor mounting mechanism and the rotor mounting mechanism located at the output end of the moving mechanism are at the same height.

5. The tiltrotor platform according to claim 1, characterized in that: The input transmission shaft is rotatably connected to the input sleeve via at least one first bearing, and the output transmission shaft is rotatably connected to the output sleeve via at least two second bearings.

6. The tiltrotor platform according to claim 3, characterized in that: The first direction fixing frame includes a front end plate, a rear end plate and two first side rails; The front end plate and the rear end plate are arranged in parallel, and both ends of the front end plate and the rear end plate are fixedly connected by a first side slide rail respectively; one end of the first direction rotating screw is rotatably connected to the front end plate, and the other end of the first direction rotating screw is rotatably connected to the rear end plate; The first side slide rail is provided with a slide groove, and the corresponding two ends of the second direction fixing frame are respectively slidably arranged in the slide groove.

7. The tiltrotor platform according to claim 3, characterized in that: The second direction fixing frame includes a first side plate, a second side plate, a bottom plate and two second side rails; The first side plate and the second side plate are arranged in parallel, and the first side plate and the second side plate are both fixedly connected to the bottom plate; one end of the second direction rotating screw is rotatably connected to the first side plate, and the other end of the second direction rotating screw is rotatably connected to the second side plate; Both ends of each second side slide rail are fixedly connected to the first side plate and the second side plate, respectively, and one second side slide rail is provided on each side of the second direction rotating screw; At least one sliding block is slidably provided on each of the second side slide rails, and each of the sliding blocks is fixedly connected to the mounting platform plate.

8. The tiltrotor platform according to claim 1, characterized in that: A second collar is fixedly provided on one end of the input sleeve close to the drive motor; One end of the steel wire rope away from the traction part passes through the first ring and the second ring in sequence and is then fixed and wound around the output shaft of the driving motor.

Images