Tilting rotor platform

Abstract

The invention discloses a tilt rotor platform, which relates to the technical field of rotor aircrafts and comprises at least one rotor mounting mechanism. The tilting mechanism comprises a tilting mechanism and a rotating mechanism; the tilting mechanism comprises an input sleeve, an output sleeve and a tilting driver; the upper end of the input sleeve and the lower end of the output sleeve are rotationally connected around a first axis; a traction part is arranged on the outer side wall of the output sleeve, and the tilting driver can pull the traction part and enable the output sleeve to rotate around a first axis; the rotating mechanism comprises 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 with one end of the input transmission shaft; one end of the input transmission shaft is fixedly connected with one end of the universal joint assembly, and one end of the output transmission shaft is fixedly connected with one end of the universal joint assembly. Therefore, the rotor wing can perform the tilting action, the tilting transition state of the tilting rotor wing can be better simulated, and the test result is more suitable for the actual situation.

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 speed, especially tilt-rotor aircraft, which are more reliable and have broad application prospects in the 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 a 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 detail.

[0003] In order to reduce the test cost, the RCS test is usually carried out on the scaled model of the target in a microwave darkroom environment. Since the tilt-rotors on the left and right sides of the aircraft are symmetrical, one side of the rotor can be selected as the research object for the test. At present, most microwave darkrooms use single-rotor or coaxial dual-rotor (no tilt) platforms for testing. The tilt-rotor system has a complex structure and is equipped with a tilt structure of the rotor. It is difficult to consider these factors at the same time in a microwave darkroom laboratory. Therefore, a tilt-rotor platform that can support the tilt function is designed to realize the RCS test of the dynamic process of single / dual rotor tilt. Summary of the invention

[0004] The object 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 perform a tilting action, 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 rotatably connected with the lower end of the output sleeve around a first axis, and the first axis is parallel to a horizontal plane; a traction part is arranged on the outer side wall of the output sleeve, the output end of the tilt drive can be connected to the traction part, and the tilt drive can pull the traction part and make the output sleeve rotate around 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 rotating driver is fixedly connected to one end of the input transmission shaft, and the rotating 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 is rotatably connected to the output sleeve; the other end of the output transmission shaft is used to install the 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 fixed frame, a first direction rotating screw, a first direction screw nut and a first direction driver; the first direction fixed frame is fixed in position, and the first direction rotating screw is rotatably connected to the first direction fixed 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 component includes a second direction fixed frame, a second direction rotating screw, a second direction screw nut and a second direction driver; the second direction fixed frame is slidably arranged on the first direction fixed frame along the axis of the first direction rotating 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 lead screw is perpendicular to the axis of the second direction rotating lead screw, and the axis of the second direction rotating lead 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 lead screw; the mounting platform plate is fixedly connected to the second direction lead 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-position rotor mounting mechanism; in the vertical direction, the fixed-position 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 rotationally connected to the input sleeve via at least one first bearing, and the output rotating shaft is rotationally 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 respectively fixedly connected by one of the first side slide rails; 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 one second side slide rail is respectively arranged on both sides of the second direction rotating screw; at least one slider is slidably arranged on each second 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 cooperates with a rotating mechanism formed by an input transmission shaft, a universal joint assembly and an output transmission shaft to drive the rotor to rotate. It can simulate different flight postures 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 posture changes and dynamic processes that the rotorcraft will experience in actual flight, the tilt function can better simulate these real flight states, so as to obtain 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 fit the actual situation.

[0018] Furthermore, a driving motor and a steel wire rope are used, which can pull the output sleeve to rotate around the first axis, thereby changing the tilting angle; and in combination 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 90° position, 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 an RCS test; and the use of two rotor mounting mechanism structures can simulate the dynamic tilting of dual rotors. Since 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 the RCS test, and there is no need 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, so as to realize precise adjustment of the distance between the two rotor assemblies.

[0022] Furthermore, the setting of the base can make the installation height of the front rotor consistent with the installation height of the rear rotor, so that it can be tested more in line with the actual installation effect.

[0023] Furthermore, the input transmission shaft and the output rotating shaft are connected to the corresponding input sleeve and the output sleeve through the corresponding first bearing and the 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, and has a simple structure, is 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 slide blocks 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 axial 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, thereby 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 drawings required for use in the embodiments will be briefly introduced below. 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 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 structure diagram of a rotor mounting mechanism in a tilt-rotor platform provided by the present invention;

[0030] Figure 3 A schematic diagram of the structure of an input sleeve in a tilt-rotor platform provided by the present invention;

[0031] Figure 4 A schematic diagram of the structure of an output sleeve in a tilt-rotor platform provided by the present invention;

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

[0033] Figure 6 A partial structural schematic diagram of a second direction moving assembly in a tilt-rotor platform provided by the present invention;

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

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

[0036] Fig. 9 A schematic diagram of the structure of the second side slide rail in the tilt-rotor platform provided by the present invention;

[0037] Fig.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] Fig.11 A schematic diagram of the tilting process of two rotor mounting mechanisms in the tilt-rotor platform provided by the present invention.

[0039] In the figure:

[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 ring; 118-second ring; 119-limiting cutout; 12-rotation mechanism; 121-rotation driver; 122-input transmission shaft; 123-universal joint assembly; 1231-first conical tooth; 1232-conical tooth ring; 1233-second conical tooth; 1234-rotating shaft; 124-output transmission 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-sliding groove; 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 plate;

[0045] 50- Base. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work 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 a tilt action, 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] Embodiment 1

[0050] This embodiment provides a tilt-rotor platform 100, which is mainly but not limited to a multi-rotor aircraft for RCS testing, such as Figures 1 to 11As shown, it includes at least one rotor installation mechanism 10; the rotor installation 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 part 116 is arranged on the outer wall of the output sleeve 112, and the output end of the tilting drive can be connected to the traction part 116, and the tilting drive can pull the traction part 116 and make the output sleeve 112 rotate around the first axis; the rotating mechanism 12 includes a rotating drive 121, an input transmission shaft 122, a universal joint assembly 123 and an output transmission shaft 124; the output end of the rotary driver 121 is fixedly connected to one end of the input transmission shaft 122, and the rotary driver 121 and the input transmission shaft 122 are arranged in the input sleeve 111; the output transmission shaft 124 is rotatably arranged in the output sleeve 112, one end of the input transmission shaft 122 is fixedly connected to one end of the universal joint assembly 123, and one end of the output transmission 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 transmission shaft 124 is used to install 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 formed by an input drive shaft 122, a universal joint assembly 123 and an output drive shaft 124 for driving the rotor to rotate, 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 states, so as to obtain 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 fit the actual situation.

[0052] Among them, the relevant structural description of the tilting mechanism 11 is as follows:

[0053] Among the optional solutions of this embodiment, it is more preferred that Figure 2 and Fig.10As shown, the tilting drive comprises a driving motor 113 and a steel wire rope 114; a counterweight 115 is fixedly arranged on the output sleeve 112, and the counterweight 115 is located on the side of the first axis away from the traction part 116; a first ring 117 is arranged on the input sleeve 111 at a position corresponding to the traction part 116 of the output sleeve 112, and one end of the steel wire rope 114 passes through the first ring 117 and is fixedly connected to the traction part 116; and the other end of the steel wire rope 114 is fixed and wound on the output shaft of the driving motor 113. By adopting the driving motor 113 and the steel wire rope 114, it can pull the output sleeve 112 to rotate around the first axis, thereby changing the tilting angle; by matching the counterweight 115, the counterweight 115 can reversely limit the rotation of the output sleeve 112 around the first axis; the two cooperate together to achieve the change of the stable tilting 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 Fig.10 As shown, a second ring 118 is fixedly provided at one end of the input sleeve 111 close to the drive motor 113; an end of the steel wire rope 114 away from the traction portion 116 passes through the first ring 117 and the second ring 118 in sequence, and is then fixed and wound around the output shaft of the drive motor 113. The provision of the second ring 118 enables the steel wire rope 114 to pull the output sleeve 112 more stably, 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 structural modes:

[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 relative rotational ears are provided on the input sleeve 111 and the output sleeve 112, and an axle pin hole is provided on the rotational ears, and each rotational ear of the input sleeve 111 is connected together with the axle pin hole of the corresponding rotational ear of the output sleeve 112 by passing an axle pin through the axle pin.

[0059] The second type, 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; 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 meshed 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 may 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 capable of self-rotation, the conical gear ring 1232 may be fixed on the rotating shaft 1234; when the rotating shaft 1234 is not capable of self-rotation, the conical gear ring 1232 is rotatably provided on the rotating shaft 1234 so as to be capable of self-rotation, such as being rotatably connected to the rotating shaft 1234 via 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 Figure 1 to Figure 4 As shown, at the same side as the counterweight 115, the end of the input sleeve 111 close to the output sleeve 112 and the end of the output sleeve 112 close to the input sleeve 111 are both provided with a limiting notch 119; when the limiting notch 119 of the input sleeve 111 fits with the limiting notch 119 of the output sleeve 112, the angle between the axis of the input sleeve 111 and the axis of the output sleeve 112 is 90°. The setting of the limiting notch 119 can achieve the function of limiting the rotation of the 90° position between the output sleeve 112 and the input sleeve 111, ensuring the maximum position of the rotor tilt.

[0062] Specifically, the limiting cutout 119 has a 45° inclined surface, 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 through at least one first bearing 13, and the output rotating shaft is rotatably connected to the output sleeve 112 through at least two second bearings 14. The input transmission shaft 122 and the output rotating shaft are respectively connected to the corresponding input sleeve 111 and the output sleeve 112 through the corresponding first bearings 13 and the second bearings 14, which can realize the stable rotation of the output transmission shaft 124 and the output transmission shaft 124, and ensure the 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 Fig.11 As shown, there are two rotor mounting mechanisms 10; one of the rotor mounting mechanisms 10 is fixed in position, and the other rotor mounting mechanism 10 is arranged on the output end of the moving mechanism; the output end of the moving mechanism can drive the rotor mounting mechanism 10 to move in position on the horizontal plane. The fixed rotor mounting mechanism 10 can realize the installation of the front rotor, and the rotor mounting mechanism 10 on the output end of the moving mechanism can be used for the installation of the rear rotor. 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 10 used to install the front rotor can be used alone to simulate the dynamic tilt of a single rotor in the RCS test; and the two rotor mounting mechanisms 10 are used to simulate the dynamic tilt of a double rotor. As there are more and more design schemes for tilt-rotor aircraft, the function of adjusting the distance between the two rotors can be realized. The mechanism factor of the rotor distance can be considered during the RCS test, and there is no need to make benches with different distances for many times, thereby reducing costs.

[0066] Among the optional solutions of this embodiment, it is more preferred that Figure 1 and Fig.10 and Fig.11 As shown, a base 50 is fixedly arranged below the fixed rotor installation mechanism 10; in the vertical direction, the fixed rotor installation mechanism 10 and the rotor installation mechanism 10 at the output end of the moving mechanism are at the same height. The arrangement of the base 50 can make the installation height of the front rotor consistent with the installation height of the rear rotor, so that it is more in line with the actual installation effect for testing.

[0067] Among the optional solutions of this embodiment, it is more preferred that Figure 1 , Figures 5 to 9 and Fig.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 lead screw 22, a first direction lead screw nut and a first direction driver; the first direction fixing frame 21 is fixed in position, and the first direction rotating lead screw 22 is rotatably connected to the first direction fixing frame 21 around the first direction axis; the first direction lead screw nut is rotatably connected to the first direction rotating lead screw, and the output end of the first direction driver is fixedly connected to the first direction rotating lead screw; the second direction moving component 30 includes a second direction fixing frame 31, a second direction rotating lead screw 32, a second direction lead screw nut 33 and a second direction driver; the second direction fixing frame 31 slides along the axis of the first direction rotating lead screw It is arranged on the first direction fixing frame 21; the second direction fixing frame 31 is fixedly connected with the first direction lead screw nut, and the second direction rotating lead screw is rotatably connected to the second direction fixing frame 31 around the second direction axis; the second direction lead screw nut 33 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 lead screw is perpendicular to the axis of the second direction rotating lead screw, and the axis of the second direction rotating lead 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 lead screw; the mounting platform plate 40 is fixedly connected with the second direction lead 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 components.

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

[0069] Among the optional solutions of this embodiment, it is more preferred that Figure 1and Figure 5 As shown, the second direction fixing 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 in parallel, 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 lead screw is rotatably connected to the first side plate 311, and the other end of the second direction rotating lead screw is rotatably connected to the second side plate 312; both 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 respectively arranged on both sides of the second direction rotating lead screw; at least one slider 315 is slidably arranged on each second rail, 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 fixing frame 31 are fixedly connected to the mounting platform plate 40, so that the mounting platform plate 40 can stably move along the axial direction of the second direction rotating lead screw 32.

[0070] Among them, about other related settings description:

[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 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 Fig.10 As shown, it is installed on the base 50. Since the output sleeve 112 is provided with a counterweight 115, when the wire rope 114 is loose, the rotor can be tilted to a 90° position under the action of the counterweight 115. When the steel wire rope 114 is stretched, the output sleeve 112 is tilted upward under the tension of the steel wire rope 114 until the central axis of the rotor is in a vertical state, the driving motor 113 is reversed, the tension of the steel wire rope 114 is reduced, the tension on the output sleeve 112 is reduced, and the rotor is tilted downward until the central axis of the rotor is flush with the ground.

[0073] Specifically, the RCS test of the tilting twin rotor, such as Fig.11As shown, a moving mechanism is added on the basis of the RCS test of a single tilt-rotor, and the front, rear, left, and right spacing of the mounting platform plate 40 is adjusted according to the ratio of the scaled model; the second direction rotating screw 32 is driven to rotate by the second direction driver (such as a motor), driving the second direction screw nut 33 to move left and right, which drives the movement of the mounting platform plate 40, and the moving 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, control the front and rear spacing of the two rotors, and determine the spacing of the rotors for RCS testing. The tilting operation of the dual rotor is consistent with that of a single rotor, and the spacing after scaling is: R / r = D / d (the actual size radius of the rotor is R, the radius of the scaled model rotor is r, the actual spacing of the dual rotors is D, and the spacing after scaling 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 used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A tilt-rotor platform, characterized in that: It includes at least one rotor installation mechanism; the rotor installation mechanism includes a tilting mechanism and a rotating mechanism; The tilt mechanism comprises an input sleeve, an output sleeve and a tilt driver; the input sleeve is fixedly arranged in a vertical posture, the upper end of the input sleeve is rotatably connected with the lower end of the output sleeve around a first axis, and the first axis is parallel to a horizontal plane; a traction part is arranged on the outer wall of the output sleeve, the output end of the tilt driver can be connected with the traction part, and the tilt driver can pull the traction part to make the output sleeve rotate around 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, 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 is rotatably connected to the output sleeve; The other end of the output transmission shaft is used for mounting the rotor.

2. The tilt-rotor platform according to claim 1, characterized in that: The tilting drive comprises a driving motor and a steel wire rope; A counterweight block is fixedly arranged on the output sleeve, and the counterweight block is located on a side of the first axis away from the traction portion; The input sleeve is provided with a first ring 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 on the output shaft of the driving motor.

3. The tilt-rotor platform according to claim 2, characterized in that: 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 cutouts; When the limiting cutout of the input sleeve fits with the limiting cutout of the output sleeve, the angle between the axis of the input sleeve and the axis of the output sleeve is 90°.

4. The tilt-rotor platform according to claim 1, characterized in that: The number of the rotor mounting mechanisms is two; 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.

5. The tilt-rotor platform according to claim 4, characterized in that: The moving mechanism comprises a first direction moving component, a second direction moving component and a mounting platform plate; The first direction moving assembly comprises a first direction fixing frame, a first direction rotating lead screw, a first direction lead screw nut and a first direction driver; the first direction fixing frame is fixed in position, the first direction rotating lead screw is rotatably connected to the first direction fixing frame around a first direction axis; the first direction lead screw nut is rotatably connected to the first direction rotating lead screw, and the output end of the first direction driver is fixedly connected to the first direction rotating lead screw; The second direction moving assembly comprises 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 lead screw rotating in the first direction is perpendicular to the axis of the lead screw rotating in the second direction, and the axis of the lead screw rotating in the second direction 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.

6. The tilt-rotor platform according to claim 4, characterized in that: A base is fixedly arranged below the fixed position 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.

7. The tilt-rotor platform according to claim 1, characterized in that: The input transmission shaft is rotationally connected to the input sleeve via at least one first bearing, and the output rotating shaft is rotationally connected to the output sleeve via at least two second bearings.

8. The tilt-rotor platform according to claim 5, characterized in that: 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 respectively fixedly connected by one of the first side slide rails; 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.

9. The tilt-rotor platform according to claim 5, characterized in that: The second direction fixing frame comprises a first side plate, a second side plate, a bottom plate and two second side slide 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; Two ends of each of the second side slide rails are respectively fixedly connected to the first side plate and the second side plate, and one second side slide rail is respectively arranged on both sides of the second direction rotating lead screw; At least one sliding block is slidably disposed on each of the second sliding rails, and each of the sliding blocks is fixedly connected to the mounting platform plate.

10. The tilt-rotor platform according to claim 2, characterized in that: A second ring is fixedly provided at 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.

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