阅读说明：本技术 一种电控电动旋翼刹车系统 (Electric control electric rotor wing braking system ) 是由 徐书博 柴郁琳 赵沛然 张贺 高佳鑫 李明 王锐 于 2019-09-29 设计创作，主要内容包括：本发明提供一种电控电动旋翼刹车系统,用于直升机的旋翼刹车,所述刹车系统包括控制系统1、电动机构组件2、连接组件3、旋翼刹车止动机构；所述电动机构组件2包括驱动机构8；控制系统1与驱动机构8电连接,用于控制驱动机构8运动；驱动机构8的输出轴80与连接组件3的一端螺纹连接,驱动机构8的输出轴80转动,以带动连接组件3沿其轴线方向运动；连接组件3的另一端与旋翼刹车止动机构固定连接,连接组件3沿其轴线方向运动,带动旋翼刹车止动机构运动,旋翼刹车止动机构对旋翼进行止动。(The invention provides an electric control electric rotor braking system which is used for rotor braking of a helicopter, and comprises a control system 1, an electric mechanism component 2, a connecting component 3 and a rotor braking and stopping mechanism; the electric mechanism assembly 2 comprises a driving mechanism 8; the control system 1 is electrically connected with the driving mechanism 8 and is used for controlling the driving mechanism 8 to move; an output shaft 80 of the driving mechanism 8 is in threaded connection with one end of the connecting component 3, and the output shaft 80 of the driving mechanism 8 rotates to drive the connecting component 3 to move along the axis direction of the connecting component; the other end of coupling assembling 3 and rotor brake detent fixed connection, coupling assembling 3 moves along its axis direction, drives rotor brake detent and moves, and rotor brake detent carries out the locking to the rotor.)

1. An electric control electric rotor braking system is used for rotor braking of a helicopter and is characterized by comprising a control system (1), an electric mechanism assembly (2), a connecting assembly (3) and a rotor braking and stopping mechanism; the electric mechanism assembly (2) comprises a driving mechanism (8);

the control system (1) is electrically connected with the driving mechanism (8) and is used for controlling the driving mechanism (8) to move;

an output shaft (80) of the driving mechanism (8) is in threaded connection with one end of the connecting component (3), and the output shaft (80) of the driving mechanism (8) rotates to drive the connecting component (3) to move along the axis direction of the connecting component;

the other end of coupling assembling (3) with rotor brake detent fixed connection, coupling assembling (3) are followed its axis direction motion, drive rotor brake detent moves, rotor brake detent stops brake disc (13), realizes the locking to the rotor.

2. Braking system according to claim 1, characterized in that said connection assembly (3) further comprises a connection tube (10), a transmission rod (30), an elastic element (31), a positioning element (9);

the positioning piece (9) is sleeved at one end, close to the output shaft (8), of the connecting pipe (10);

one end of the transmission rod (30) is provided with a thread groove along the axial direction and is in threaded connection with one end of the output shaft (80) through the thread groove, and the output shaft (80) rotates to drive the transmission rod (30) to move along the axial direction of the transmission rod (30); the transmission rod (30) penetrates through the positioning piece (9);

the elastic piece (31) is positioned in the connecting pipe (10) and sleeved on the transmission rod (30); one end of the elastic piece (31) is limited at one end of the transmission rod (30) far away from the output shaft (8), and the other end of the elastic piece is limited at the joint of the positioning piece (9) and the connecting pipe (10);

connecting pipe (10) with rotor brake detent fixed connection, transfer line (30) move along its axis direction, transfer line 30 and connecting pipe 10 cooperate with compression or release elastic component (31), and elastic component (31) promote connecting pipe (10) and move along the axis direction of connecting pipe (10), drive rotor brake detent moves.

3. Braking system according to claim 2, characterized in that said connection assembly (3) further comprises a threaded joint (11),

and a thread groove is formed in one end, far away from the output shaft (8), of the connecting pipe (10) along the axial direction, one end of the threaded joint (11) is in threaded connection with the connecting pipe (10) through the thread groove, and the connecting length of the connecting pipe (10) and the threaded joint (11) is adjusted.

4. The brake system according to claim 3, wherein the connecting assembly (3) further comprises a locking plate (12), the locking plate (12) is sleeved on the threaded joint (11) and is located at the connection position of the threaded joint (11) and the connecting pipe (10); the locking piece (12) is used for locking the threaded joint (11) after the connection between the connecting pipe (10) and the threaded joint (11) is adjusted.

5. Braking system according to claim 3, characterized in that said rotorcraft brake stop mechanism comprises a rocker arm (40), a brake member (41), a brake pad (42),

the rocker arm (40) is connected with one end of the threaded connector (11), the connecting pipe (10) drives the threaded connector (11) to move, the threaded connector (11) drives the rocker arm (40) to move, and the rocker arm (40) drives the braking piece (41) and the braking piece (42) to stop the brake disc (13).

6. Braking system according to claim 2, characterized in that said elastic element (31) is a spring.

7. Braking system according to claim 2, characterized in that the electric mechanism assembly (2) comprises a bracket (7) for fixing the driving mechanism (8).

8. Braking system according to claim 7, characterized in that the drive mechanism (8) is an actuator motor.

9. Braking system according to claim 1, characterized in that said control system (1) is provided with a control switch (5), said control switch (5) being provided with a protective casing (50) and an operation indication mark.

Technical Field

The invention belongs to the technical field of helicopter transmission design, and relates to an electric control electric rotor braking system.

Background

The function of a helicopter rotor braking system is to use rotor braking to operate within a specified rotor speed when the helicopter is on the ground after the engine is stopped, which can shorten rotor stopping time, quickly brake the blades, and keep the rotor blades stationary while the helicopter is standing on the ground. At present, two structures of mechanical control mechanical brake and mechanical control hydraulic brake are mostly adopted.

A mechanical control mechanical brake structure generally adopts a mode of combining a mechanical control handle of a cockpit rotor brake, a linkage reversing structure, a rotor brake control steel cable, an elastic actuating mechanism and a mechanical rotor brake device, and a brake pad in the brake device is driven to brake a brake disc on a main speed reducer through the operation of a driver. Mechanical control hydraulic brake structure generally adopts mechanical control handle, through hydraulic pressure pipeline and accumulator, for rotor brake equipment provides hydraulic energy, drives the brake block and carries out friction braking to the brake disc. The brake structure has a complex structure, is cross-linked with other systems, and is easy to generate spatial interference.

Chinese patent No. CN 104290905B discloses an electric brake system for a helicopter rotor, which adopts a torque sensor to collect brake torque signals, a rotation speed sensor to collect rotation speed signals, and feeds the signals back to a central control unit, analyzes and calculates corresponding brake force and makes dynamic adjustment, adopts a front and rear electric actuating mechanism to replace a mechanical or hydraulic brake mechanism, and uses electric signals to perform judgment and work. The system has more collected signals, complex structural design and higher operation cost.

Disclosure of Invention

The purpose of the invention is: the rotor braking system in the form of the electrically controlled non-control steel cable has the characteristics of simple structure, convenience in operation, misoperation prevention function, weight reduction, good man-machine work efficiency and the like, and meanwhile, the space interference is avoided, the cross-linking with other systems is reduced, the installation is simple, the adjustment and the maintenance are easy, and the reliability and the safety are good.

The invention provides an electric control electric rotor braking system which is used for rotor braking of a helicopter, and comprises a control system 1, an electric mechanism component 2, a connecting component 3 and a rotor braking and stopping mechanism; the electric mechanism assembly 2 comprises a driving mechanism 8;

the control system 1 is electrically connected with the driving mechanism 8 and is used for controlling the driving mechanism 8 to move;

an output shaft 80 of the driving mechanism 8 is in threaded connection with one end of the connecting component 3, and the output shaft 80 of the driving mechanism 8 rotates to drive the connecting component 3 to move along the axis direction of the connecting component;

the other end of coupling assembling 3 with rotor brake detent fixed connection, coupling assembling 3 drives along its axis direction motion rotor brake detent motion, rotor brake detent stops brake disc 13, realizes the locking to the rotor.

Further, the connecting assembly 3 further comprises a connecting pipe 10, a transmission rod 30, an elastic member 31 and a positioning member 9;

the positioning piece 9 is sleeved at one end of the connecting pipe 10 close to the output shaft 8;

one end of the transmission rod 30 is provided with a thread groove along the axial direction and is in threaded connection with one end of the output shaft 80 through the thread groove, and the output shaft 80 rotates to drive the transmission rod 30 to move along the axial direction of the transmission rod 30; the transmission rod 30 passes through the positioning piece 9;

the elastic member 31 is located inside the connecting pipe 10 and sleeved on the transmission rod 30; one end of the elastic element 31 is limited at one end of the transmission rod 30 far away from the output shaft 8, and the other end is limited at the joint of the positioning element 9 and the connecting pipe 10;

connecting pipe 10 with rotor brake detent fixed connection, transfer line 30 moves along its axis direction to compression or release elastic component 31, elastic component 31 promote connecting pipe 10 and move along the axis direction of connecting pipe 10, drive rotor brake detent moves.

Further, the connection assembly 3 further comprises a threaded joint 11

One end of the connecting pipe 10, which is far away from the output shaft 8, is provided with a thread groove along the axial direction, and one end of the threaded joint 11 is in threaded connection with the connecting pipe 10 through the thread groove and is used for adjusting the connection length of the connecting pipe 10 and the threaded joint 11.

Further, the connecting assembly 3 further comprises a locking sheet 12, and the locking sheet 12 is sleeved on the threaded joint 11 and is located at a connection position of the threaded joint 11 and the connecting pipe 10; the locking piece 12 is used to lock the threaded joint 11 after adjusting the connection of the connection pipe 10 to the threaded joint 11.

Further, the rotor brake stopping mechanism comprises a rocker arm 40, a braking member 41 and a brake pad 42,

the rocker arm 40 is connected with one end of the threaded connector 11, the connecting pipe 10 drives the threaded connector 11 to move, the threaded connector 11 drives the rocker arm 40 to move, and the rocker arm 40 drives the braking piece 41 and the brake pad 42 to stop the rotary wing.

Further, the elastic member 31 is a spring.

Further, the electric mechanism assembly 2 comprises a bracket 7 for fixing the driving mechanism 8.

Further, the driving mechanism 8 is an actuating motor.

Further, a control switch 5 is arranged on the control system 1, and the control switch 5 is provided with a protective shell 50 and an operation indication mark.

The invention has the technical effects that:

in the invention, a mechanical rotor brake handle mechanism, a reversing gear mechanism, a rotor brake control steel cable or hydraulic pipeline, a pressure accumulator and the like are replaced by the control switch, the cable and the electric mechanism, so that the whole weight of the rotor brake system can be greatly reduced;

in the invention, a push-pull steel cable or a hydraulic pipeline is not used, so that the structural space of the helicopter is saved, the interference with systems such as an environmental control system and the like is avoided, the design work of structural interfaces is reduced, and the potential safety hazard of hydraulic oil leakage caused by selecting a hydraulic transmission mode is avoided;

the electric control switch is used for braking and releasing the brake, a protection device and an operation mark are added, the electric control switch has the function of preventing misoperation, replaces a mechanical control handle of the original machine type, enables a pilot to operate more conveniently, and avoids influence on the sight of the pilot caused by improper position of the control handle.

The invention uses the separated plug and the screw for installation, the disassembly time is short, the installation and the maintenance are convenient, and the threaded connection assembly is easy to adjust. The electric mechanism works reliably, even if the control switch and the electric mechanism fail, the helicopter is not influenced to fly in a disconnected state, and the system reliability is improved.

The control system can be designed to be in a half-brake state, so that the starting of the half-brake engine of the helicopter can be realized in gust weather, and the operation safety of the helicopter is improved.

Drawings

Fig. 1 is an isometric view of the connection mode of an electric mechanism assembly, a connection assembly and a rotor brake stop mechanism in the electric control electric rotor brake system according to the embodiment;

FIG. 2 is a schematic diagram of the operation of the electrically controlled electric rotor braking system according to the present embodiment;

fig. 3 is a schematic view of a connection assembly of the electrically controlled electric rotor braking system according to the present embodiment;

fig. 4 is a schematic diagram of a control switch of the electric control electric rotor braking system according to the embodiment.

Detailed Description

Fig. 1 is an axonometric view of electric mechanism subassembly, coupling assembling and rotor brake detent mechanism connected mode among the automatically controlled electronic rotor braking system of this embodiment, and fig. 2 is the theory of operation schematic diagram of the automatically controlled electronic rotor braking system of this embodiment, and it is shown with fig. 2 to combine, and this embodiment provides an automatically controlled electronic rotor braking system for the rotor brake of helicopter, braking system includes control system 1, electric mechanism subassembly 2, coupling assembling 3, rotor brake detent mechanism. The electric mechanism assembly 2 comprises a driving mechanism 8, and the connecting assembly 3 comprises a connecting pipe 10.

As shown in fig. 2, the control system 1 is electrically connected to the driving mechanism 8 for controlling the driving mechanism 8 to move. As shown in fig. 1, an output shaft 80 of the driving mechanism 8 is in threaded connection with one end of the connecting pipe 10, and the output shaft 80 of the driving mechanism 8 rotates to drive the connecting pipe 10 to move along the axial direction thereof; the other end of connecting pipe 10 with rotor brake detent fixed connection, connecting pipe 10 move along its axis direction, are used for control rotor brake detent stops brake disc 13, realizes the locking to the rotor.

In the embodiment, the control switch, the cable and the electric mechanism are used for replacing a mechanical rotor brake handle mechanism, a reversing gear mechanism, a rotor brake control steel cable or a hydraulic pipeline, an accumulator and the like, so that the overall weight of the rotor brake system can be greatly reduced.

Further, as shown in fig. 1, the electric mechanism assembly 2 of the present embodiment includes a bracket 7 for fixing the driving mechanism 8 and a driving mechanism 8. The driving mechanism 8 of the present embodiment is an actuator motor.

Further, fig. 3 is a schematic view of a connecting assembly of the electrically controlled electric rotor braking system according to the present embodiment, and referring to fig. 1 and fig. 3, the connecting assembly 3 further includes a transmission rod 30, an elastic member 31, and a positioning member 9. In this embodiment, the elastic member 31 is a spring, and the positioning member 9 is a nut, and is located at one end of the connecting pipe 10 close to the output shaft 80, and is in threaded connection with the outer wall of the connecting pipe 10.

One end of the transmission rod 30 is axially provided with a thread groove, the end penetrates through the positioning piece 9 and is in threaded connection with the output shaft 80, and the output shaft 80 rotates to drive the transmission rod 30 to move along the axial direction of the transmission rod 30 through threaded transmission. The spring is sleeved at the other end of the transmission rod 30, one end of the spring is limited at one end of the transmission rod 30 far away from the output shaft 80, and the other end of the spring is limited at the joint of the positioning piece 9 and the connecting pipe 10. The spring is located inside the connection tube 10.

The nut fixed at one end of the connecting pipe 10 limits one end of the spring, and the end of the transmission rod 30 far away from the output shaft 80 limits the other end of the spring. The other end of the connecting pipe 10 is connected with a rotor braking and stopping mechanism. Therefore, when the transmission rod 30 moves along the axial direction thereof, the transmission rod 30 and the connection pipe 10 are engaged, and the spring is compressed or released, and the spring pushes the connection pipe 10 to move along the axial direction of the connection pipe 10.

Further, the connecting assembly 3 further includes a threaded joint 11 and a locking piece 12, a threaded groove is axially formed in one end of the connecting pipe 10, which is far away from the output shaft 80, and one end of the threaded joint 11 is in threaded connection with the connecting pipe 10 through the threaded groove, so that the connection length between the connecting pipe 10 and the threaded joint 11 can be conveniently adjusted. The locking sheet 12 is sleeved at the connection position of the threaded joint 11 and the connecting pipe, and is used for locking the threaded joint 11 after the connection between the connecting pipe 10 and the threaded joint 11 is adjusted.

Further, the rotor brake stopping mechanism comprises a rocker arm 40, a braking member 41 and a brake pad 42,

the rocker arm 40 is connected with one end of the threaded joint 11, and the connecting pipe 10 drives the threaded joint 11 to move, so as to control the rocker arm 40 to drive the braking piece 41 and the braking piece 42 to stop the rotary wing.

The threaded joint 11 is connected to the rocker arm 40 of the brake by a smooth pivot pin and washer, cotter pin. When the driving mechanism 8 is actuated, the connecting pipe 10 and the threaded joint 11 are driven, the rocker arm 40 of the push-pull braking device presses and rubs the brake disc 13 of the main speed reducer by the brake pad 42, and finally the function of rotor stopping is realized.

Further, fig. 4 is a schematic diagram of a control switch of the electric control electric rotor braking system according to the embodiment, as shown in fig. 4, a control switch 5 is arranged on the control system 1, and the control switch 5 is provided with a protective shell 50 and an operation instruction. The control switch electrical connection is connected by a breakaway plug 14 that transmits control signals to the drive mechanism and the information display system. The original mechanical control mechanism is replaced by a control switch and a cable, so that the purpose of reducing the weight of the system can be effectively realized. The control switch with the protection device and the operation mark is convenient to operate, has the function of preventing misoperation, avoids spatial overlapping of the control steel cable or the hydraulic pipeline and other systems, reduces cross-linking and lightens the design workload.