CN209795825U - Worm and gear type rotor wing tilting device - Google Patents

Abstract

The utility model belongs to the technical field of the aircraft design, concretely relates to worm gear formula rotor device that verts. The worm gear and worm device of the utility model comprises a second shell, a worm motor, a reducer, a worm, a deep groove ball bearing, a worm gear and a paired angular contact ball bearing; the second shell is connected with the first shell in a screw mode and connected in a ring nesting mode, the second shell internally contains a worm motor and a speed reducer, the worm motor is fixed on the second shell through screws, the outer wall of the worm motor is matched with the second shell, the worm motor is connected with the speed reducer through a key slot, the outer wall of the speed reducer is matched with the second shell, the speed reducer is connected with the worm in a key slot mode, the speed reducer is fixed with the first shell in a pin mode, and the worm is connected with the worm wheel through a worm gear and a worm wheel. The utility model discloses avoid using complicated system to control whole device, make stability, the reliability of aircraft rotor obtain guaranteeing.

Description

Worm and gear type rotor wing tilting device

Technical Field

The utility model belongs to the technical field of the aircraft design, concretely relates to worm gear formula rotor device that verts.

Background

the plane normal direction of the traditional helicopter rotor wing is upward, forward or backward tilting with large amplitude can not occur, the design provides a powerful vertical take-off and landing function for the helicopter, and the horizontal flying speed of the helicopter is limited. The reason is that the plane of the rotor wing of the helicopter and the flying speed are in the same plane, which brings about the problems that the speed of the blade tip is superposed, the flutter is easy to occur, the sound barrier is easy to be touched and the like, so that the rotation speed and the flat flying speed of the rotor wing of the helicopter are greatly limited. Fixed-wing proprotors are much less constrained, and their rotor planes are perpendicular to the direction of flight speed, allowing higher level flight speeds. Tilt rotor aircraft have emerged based on the idea of simultaneously achieving vertical take-off and landing capability and high level flight speed. The tilt rotor aircraft has the advantages of both a helicopter and a fixed-wing aircraft, is convenient to take off and land, and has long voyage and high voyage speed. The rotor wing of the existing tilt rotor aircraft is mainly realized by means of steering engines or planetary gears, the rotor wing tilt device needs a plurality of parts, the structure is complex, the fault tolerance rate is low, a complex system is needed to control, the stability and reliability are difficult to guarantee, and the application of the tilt rotor aircraft is greatly limited due to the defects.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a worm gear formula rotor device that verts, the utility model discloses a worm gear realizes verting the function, avoids using complicated system to control whole device, makes stability, the reliability of aircraft rotor obtain guaranteeing.

The technical scheme of the utility model is that: the utility model provides a worm gear formula rotor device of verting, including first shell, the transmission shaft, first radome fairing, first paddle motor, first paddle, the second radome fairing, second paddle motor, second paddle and worm gear device, wherein the worm wheel passes through the keyway mode and links to each other with the transmission shaft, the transmission shaft both ends respectively with first radome fairing, the second radome fairing is connected, install first paddle motor in first radome fairing, the second radome fairing respectively, second paddle motor, first paddle motor links to each other with first paddle, second paddle motor links to each other with the second paddle, its characterized in that: the worm gear and worm device comprises a second shell, a worm motor, a speed reducer, a worm, a deep groove ball bearing, a worm gear and paired angular contact ball bearings; the second shell is connected with the first shell in a screw mode and connected in a ring nesting mode, the second shell internally contains a worm motor and a speed reducer, the worm motor is fixed on the second shell through screws, the outer wall of the worm motor is matched with the second shell, the worm motor is connected with the speed reducer through a key slot, the outer wall of the speed reducer is matched with the second shell, the speed reducer is connected with the worm in a key slot mode, the speed reducer is fixed with the first shell in a pin mode, and the worm is connected with the worm wheel through a worm gear and a worm wheel.

According to worm gear formula rotor tilting device as above, its characterized in that: the worm is provided with the deep groove ball bearing on one side of the speed reducer, the outer wall of the deep groove ball bearing is matched with the first shell, the inner wall of the deep groove ball bearing is matched with the worm, and the deep groove ball bearing is clamped between the first shell and the worm through a bearing shoulder; the other side of the worm is provided with paired angular contact ball bearings, and the outer walls of the paired angular contact ball bearings are matched with the first shell and the end cover simultaneously.

according to worm gear formula rotor tilting device as above, its characterized in that: the end cover is connected with the first shell in a circular ring nesting mode.

According to worm gear formula rotor tilting device as above, its characterized in that: the deep groove ball bearing is a 61800 deep groove ball bearing.

According to worm gear formula rotor tilting device as above, its characterized in that: the worm wheel is provided with stop pins at the worm gear teeth of 0 degree and 90 degrees.

The utility model has the advantages that: the turbine worm type tilting is mechanical synchronization, and has extremely high synchronism and reliability compared with the control of two tilting systems through electric signals; secondly, the driving source of the whole worm gear is a single motor, and the anti-interference capability of the motor signal is strong; the positioning problem of the tilting angle is solved mechanically, namely, only signals are input to a motor, the rotor shaft is rotated to a proper angle, and the situation that the turbine worm is driven reversely by stress on the rotor shaft to influence the tilting angle is avoided; fourthly, the purpose of limiting the tilting angle is achieved by arranging stop pins on turbine teeth of 0 degree and 90 degrees of the turbine.

Drawings

Figure 1 is a general schematic view of a rotor tilt mechanism;

FIG. 2 is a top view of the worm gear assembly;

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Description of reference numerals: the structure comprises a first shell 1, a transmission shaft 2, a first fairing 3, a first blade motor 4, a first blade 5, a second fairing 6, a second blade motor 7, a second blade 8, a second shell 9, a worm motor 10, a speed reducer 11, a worm 12, a deep groove ball bearing 13, a worm wheel 14, a paired angular contact ball bearing 15 and an end cover 16.

Detailed Description

The noun explains:

Combination: two cylindrical or disk-shaped objects are coaxial and attached to each other.

the technical solution of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses a worm and gear formula rotor device of verting includes first shell 1, transmission shaft 2, first radome fairing 3, first paddle motor 4, first paddle 5, second radome fairing 6, second paddle motor 7, second paddle 8 and worm and gear device, and wherein the worm wheel 14 that first shell 1 was fixed links to each other with transmission shaft 2 through the keyway mode. Two ends of the transmission shaft 2 are respectively connected with the first fairing 3 and the second fairing 6, the first fairing 3 and the second fairing 6 are internally provided with the first paddle motor 4 and the second paddle motor 7 respectively, the first paddle motor 4 is connected with the first paddle 5, and the second paddle motor 7 is connected with the second paddle 8.

As shown in fig. 2 and 3, the worm gear device of the present invention includes a second housing 9, a worm motor 10, a reducer 11, a worm 12, a deep groove ball bearing 13, a worm wheel 14, and a paired angular contact ball bearing 15; the second shell 9 is connected with the first shell 1 in a screw mode, and the second shell 9 is connected with the first shell 1 in a circular ring nesting mode to ensure coaxiality. The second casing 9 contains a worm motor 10 and a speed reducer 11, the worm motor 10 is fixed on the second casing 9 through screws, the outer wall of the worm motor 10 is matched with the second casing 9, and the worm motor 10 is connected with the speed reducer 11 through a key slot. The outer wall of the speed reducer 11 is matched with the second shell 9, the speed reducer 11 is connected with the motor 10 in a key way, the speed reducer 11 is connected with the worm 12 in a key way, and the speed reducer 11 is fixed with the first shell 1 in a pin way. The worm 12 is connected with the speed reducer 11 through a key, and the worm 12 is connected with the worm wheel 14 through a worm gear.

As shown in fig. 3, the worm 12 of the present invention is provided with a ball bearing 13 on one side of the speed reducer 11, the outer wall of the ball bearing 13 is matched with the first housing 1, the inner wall is matched with the worm 12, and the ball bearing 13 is clamped between the first housing 1 and the worm 12 through a bearing shoulder; the ball bearing 13 is used for bearing the radial force borne by the worm 12 when the worm gear and the worm are driven, so that the purpose of radially limiting the worm 12 is achieved. The other side (namely the end) of the worm 12 is provided with a paired angular contact ball bearing 15, the outer wall of the paired angular contact ball bearing 15 is matched with the first shell 1 and the end cover 16 at the same time, the inner wall of the paired angular contact ball bearing 15 is matched with the worm 12, and the paired angular contact ball bearing 15 is clamped between the end cover 16 and the worm 12 through a bearing shoulder. The end cap 16 is connected to the first housing 1 by screws, and the end cap 16 is connected to the first housing 1 by a ring nesting manner, so that the paired angular contact ball bearings 15 are ensured to be coaxial with the worm 12. The paired angular contact ball bearings 15 are used for axial stopping of the worm 12, that is, axial force acting on the worm when the worm gear is driven is balanced, so that the purpose of axially limiting the worm 12 is achieved. The worm wheel 14 is connected to the worm 12 by a worm gear. The first shell 1, the second shell 9 and the end cover 16 are fixed in a screw mode, and the first shell 1, the second shell 9 and the end cover 16 are coaxial in a ring nesting mode. The inner wall of the first housing 1 and the outer wall of the ball bearing 13 and the pair of angular contact ball bearings 15 engage and are retained by the bearing shoulders.

The utility model discloses a ball bearing 13 is 61800 deep groove ball bearing, adopts the benefit of this concrete device: a) the standard part is easy to purchase and low in price; b) the heating is small, and the large radial force can be borne. The paired angular contact ball bearings 15 are 7003DB back type angular contact bearings 15, and the advantages of the specific device are that a) the paired angular contact ball bearings are standard parts, are easy to purchase and are low in price; b) the heating is small, and the bearing device can bear large radial force and large bidirectional axial force.

The utility model discloses a working process is: the worm motor 10 is decelerated through the gear reducer 11, the worm 12 is driven to rotate to drive the worm wheel 14, the worm wheel 14 is in key connection with the transmission shaft 2, and the first fairing 3, the first blade motor 4, the first blade 5, the second fairing 6, the second blade motor 7 and the second blade 8 are enabled to be synchronously inclined. When a fixed angle theta needs to be rotated, setting the transmission ratio of the worm gear and the worm as i, and inputting a control signal to the worm motor 10 by the control system to enable the rotation angle of the worm 12 to be i theta.

The device mainly solves the following problems:

a) synchronicity of tilting. The turbine worm mode tilting is mechanical synchronization, and has extremely high synchronism and reliability compared with the control of two tilting systems through electric signals.

b) Stability of tilting. The driving source of the whole worm gear is a single motor, and the anti-interference capability of motor signals is strong.

c) The tilting angle is locked. The worm and gear of the worm gear has a reverse self-locking function, namely the worm and gear can only drive the worm gear, but the worm and gear cannot drive the worm gear. This just mechanically solved the location problem of angle of verting, only need be promptly to motor input signal, with the rotor shaft rotatory to suitable angle can, and need not to worry that the epaxial atress of rotor drives the turbine worm in the opposite direction, influences the angle of verting.

d) And limiting and protecting the tilting angle. The tilt angle of the tilt rotor is only between 0 ° and 90 °, and is generally not allowed to exceed a range. The limiting protection mode of the scheme is simple and reliable. Namely, stop pins are arranged on turbine teeth which are lower than 0 degrees and higher than 90 degrees on the turbine. If the motor is out of control, namely the motor still works when the tilting angle is lower than 0 degrees or higher than 90 degrees, the stop pin on the turbine can stop the worm from continuing to rotate, and the purpose of limiting the tilting angle is achieved.

This rotor device of verting mainly by a micro motor, a gear reducer, a set of worm gear worm pair is constituteed, and micro motor and reduction gear are fixed on the organism, and the during operation, whole mechanism pass through reduction gear and two kinds of devices of worm and worm wheel and slow down, make the worm wheel obtain slow-speed of revolution and big moment of torsion, and steady when guaranteeing the rotor and vert is reliable, and the worm and gear has extremely strong self-locking function, can guarantee the position accuracy that the rotor turned to. The whole mechanism has short motion transmission route, high efficiency and compact structure. Successful application of this rotor tilt mechanism will enable rotor tilt aircraft to have a longer range, higher speed than helicopters, and higher maneuverability and lower operating costs than fixed wing aircraft. And the mechanism has few parts, is mostly a standard part, has short production and manufacturing period in the early stage, is convenient to disassemble, assemble and maintain in the later stage, and has low investment cost and good economic benefit.

Claims (5)

1. The utility model provides a worm gear formula rotor device of verting, including first shell, the transmission shaft, first radome fairing, first paddle motor, first paddle, the second radome fairing, second paddle motor, second paddle and worm gear device, wherein the worm wheel passes through the keyway mode and links to each other with the transmission shaft, the transmission shaft both ends respectively with first radome fairing, the second radome fairing is connected, install first paddle motor in first radome fairing, the second radome fairing respectively, second paddle motor, first paddle motor links to each other with first paddle, second paddle motor links to each other with the second paddle, its characterized in that: the worm gear and worm device comprises a second shell, a worm motor, a speed reducer, a worm, a deep groove ball bearing, a worm gear and paired angular contact ball bearings; the second shell is connected with the first shell in a screw mode and connected in a ring nesting mode, the second shell internally contains a worm motor and a speed reducer, the worm motor is fixed on the second shell through screws, the outer wall of the worm motor is matched with the second shell, the worm motor is connected with the speed reducer through a key slot, the outer wall of the speed reducer is matched with the second shell, the speed reducer is connected with the worm in a key slot mode, the speed reducer is fixed with the first shell in a pin mode, and the worm is connected with the worm wheel through a worm gear and a worm wheel.

2. The worm-rotor tilter apparatus of claim 1, wherein: the worm is provided with the deep groove ball bearing on one side of the speed reducer, the outer wall of the deep groove ball bearing is matched with the first shell, the inner wall of the deep groove ball bearing is matched with the worm, and the deep groove ball bearing is clamped between the first shell and the worm through a bearing shoulder; the other side of the worm is provided with paired angular contact ball bearings, and the outer walls of the paired angular contact ball bearings are matched with the first shell and the end cover simultaneously.

3. The worm-rotor tilter apparatus of claim 2, wherein: the end cover is connected with the first shell in a circular ring nesting mode.

4. The worm-rotor tilter apparatus of claim 1, wherein: the deep groove ball bearing is a 61800 deep groove ball bearing.

5. The worm-rotor tilter apparatus of claim 1, wherein: the worm wheel is provided with stop pins at the worm gear teeth of 0 degree and 90 degrees.