A general-purpose helicopter simulator wheel brake actuator

Abstract

The present invention belongs to the field of flight simulation and relates to a general-purpose helicopter simulator wheel brake actuator, comprising: a linear displacement sensor (2) is screwed into a threaded hole of a sensor sleeve (3) by a thread, and the housing of the linear displacement sensor (2) is placed in the inner cavity of the sensor sleeve (3); the signal wire of the linear displacement sensor (2) is led out from a side hole of a base (1), and the linear displacement sensor (2) is threadedly connected to the sensor sleeve (3); the sensor sleeve (3) is threadedly connected to a spring sleeve (5); then a cylindrical compression spring (4) is placed in the spring sleeve (5); a threaded end cap (8) is sleeved on a piston rod (6), an adjusting gasket (7) is placed at the thread of the threaded end cap (8), and this assembly is screwed into the spring sleeve (5); a rod end bearing (11) is screwed into a thin nut (10), and this assembly is screwed into the piston rod (6). The present invention is applicable to helicopter simulators of different models.

Description

Technical Field

[0001] The present invention belongs to the field of flight simulation and relates to a universal helicopter simulator wheel brake actuator. Background Art

[0002] Helicopter simulators can accurately and realistically simulate the flight performance and handling qualities of helicopters, and are used to train pilots to fly helicopters and handle special situations. The wheel brake actuator is an important part of the helicopter simulator's control loading system, and its functions are: collecting the brake displacement signal of the helicopter simulator and simulating the wheel brake force of the helicopter.

[0003] For existing helicopter simulator wheel brake actuators, special wheel brake actuators are usually designed separately according to different models. In some designs, the sensors are externally placed. This method not only has a long design cycle, is not conducive to reducing manufacturing costs, but also is not conducive to the service life of the sensors. Summary of the Invention

[0004] Objective of the present invention: To provide a universal helicopter simulator wheel brake actuator that meets the functional requirements of the helicopter simulator's control loading system and is applicable to different models of helicopter simulators.

[0005] Technical solution of the present invention: A universal helicopter simulator wheel brake actuator, comprising:

[0006] Base 1, linear displacement sensor 2, sensor sleeve 3, cylindrical compression spring 4, spring sleeve 5, piston rod 6, adjusting gasket 7, threaded end cap 8, stop gasket 9, thin nut 10, rod end bearing 11;

[0007] One end of the base 1 is a double-ear with a reamed hole, the other end is an external thread sleeve, and a side hole is opened in the middle; the linear displacement sensor 2 is composed of a housing and a thimble and has an external thread; one end of the sensor sleeve 3 is an internal thread sleeve, and the other end has an external thread and a threaded hole; one end of the piston rod 6 is a blind hole, and the other end is a threaded hole; the threaded end cap 8 has a through hole in the middle;

[0008] The linear displacement sensor 2 is screwed into the threaded hole of the sensor sleeve 3 through a thread, and the housing of the linear displacement sensor 2 is placed in the inner cavity of the sensor sleeve 3; the signal wire of the linear displacement sensor 2 is led out from the side hole of the base 1, and the linear displacement sensor 2 is threadedly connected to the sensor sleeve 3; the sensor sleeve 3 is threadedly connected to the spring sleeve 5; then the cylindrical compression spring 4 is placed in the spring sleeve 5; the threaded end cap 8 is sleeved on the piston rod 6, the adjusting gasket 7 is placed at the thread of the threaded end cap 8, and this assembly is screwed into the spring sleeve 5; the rod end bearing 11 is screwed into the thin nut 10, this assembly is screwed into the piston rod 6, and a stop gasket 9 is added between the rod end bearing 11 and the thin nut 10. After the whole machine debugging of the wheel brake actuator is completed, the stop gasket 9 is bent.

[0009] Apply an appropriate amount of grease to the inner wall of the spring sleeve 5.

[0010] The linear displacement sensor 2 is a self - restoring linear displacement sensor.

[0011] The thread of the threaded end cap 8 is a fine - thread external thread, with dimensions adapted to the thread of the spring sleeve 5, and its head is a regular hexagon.

[0012] The stop washer 9, thin nut 10, and rod end bearing 11 are selected as standard parts.

[0013] The cylindrical compression spring 4 is a cylindrical helical compression spring, and its two ends are closed coils and ground flat.

[0014] The spring sleeve 5 is a hollow sleeve with internal threads at both ends.

[0015] The near - blind - hole section of the piston rod 6 has double shoulders.

[0016] The beneficial effects of the present invention: The present invention is not only structurally compact, easy to install, stable and reliable, can simulate the wheel braking force, meet the functional requirements of the helicopter simulator's control load system, but also can be applied to different models of helicopter simulators by adjusting the starting force and the maximum stroke of the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Structural schematic of the present invention Figure 1 。

[0018] Figure 2 Structural schematic of the present invention Figure 2 。 DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work belong to the scope of protection of the present invention.

[0020] The present invention discloses a general - type helicopter simulator wheel brake actuator, belonging to the field of flight simulation applications. As Figure 1 、 2 shown, the invention is composed of a base 1, a linear displacement sensor 2, a sensor sleeve 3, a cylindrical compression spring 4, a spring sleeve 5, a piston rod 6, an adjusting gasket 7, a threaded end cap 8, a stop washer 9, a thin nut 10, and a rod end bearing 11.

[0021] One end of the base 1 has double ears with reamed holes, the other end is an external thread sleeve, and a side hole is opened in the middle; the linear displacement sensor 2 is a self-restoring linear displacement sensor, which consists of a housing and a thimble and has an external thread; one end of the sensor sleeve 3 is an internal thread sleeve, and the other end has an external thread and a threaded hole; the cylindrical compression spring 4 is a cylindrical helical compression spring. To ensure that the cylindrical compression spring 4 can be stably placed, its two ends are closed coils and ground flat; the spring sleeve 5 is a hollow sleeve with internal threads at both ends, and its outer surface has knurled straight lines to increase the friction force; the piston rod 6 has a blind hole at one end, the hole diameter of which is larger than the thimble diameter of the cylindrical compression spring 4 and smaller than the inner diameter of the cylindrical compression spring 4. The other end is a threaded hole. The piston rod near the blind hole section has double shoulders, and its outer diameter is equal to the inner diameter of the spring sleeve 5. The two are in clearance fit to make it have a guiding function; the adjusting gasket 7 has an outer diameter equal to the outer diameter of the spring sleeve 5; the inner diameter is adapted to the thread size of the spring sleeve 5; the threaded end cover 8 has a through hole in the middle, the hole diameter of which is slightly larger than the rod diameter of the piston rod 6. Its thread is a fine-pitch external thread, and the size is adapted to the thread of the spring sleeve 5. The head is a regular hexagon for easy tightening; the stop gasket 9, the thin nut 10, and the rod end bearing 11 are selected as standard parts to reduce the manufacturing cost.

[0022] Structural form: The linear displacement sensor 2 is screwed into the threaded hole of the sensor sleeve 3 through threads, and the housing of the linear displacement sensor 2 is placed in the inner cavity of the sensor sleeve 3; the signal wire of the linear displacement sensor 2 is led out from the side hole of the base 1, and the linear displacement sensor 2 is threadedly connected to the sensor sleeve 3; the sensor sleeve 3 is threadedly connected to the spring sleeve 5; an appropriate amount of lubricating grease is applied to the inner wall of the spring sleeve 5 so that the piston rod 6 can move smoothly. Then, the cylindrical compression spring 4 is placed in the spring sleeve 5; the threaded end cover 8 is sleeved on the piston rod 6, and the adjusting gasket 7 is placed at the thread of the threaded end cover 8, and this assembly is screwed into the spring sleeve 5; the rod end bearing 11 is screwed into the thin nut 10, and this assembly is screwed into the piston rod 6, and a stop gasket 9 is added between the two. After the whole machine debugging of the standby wheel brake actuator is completed, the stop gasket 9 is bent to achieve the effect of preventing thread loosening.

[0023] The principle is as follows: When the pilot steps on the foot pedal, the foot pedal converts the angular displacement into a linear displacement and transmits it to the piston rod. The piston rod then pushes the displacement sensor, and the sensor can collect a unique signal. At the same time, the piston rod compresses the spring, and the reaction force of the spring can simulate the wheel brake force; for different models of helicopters, the starting force of the brake can be adjusted by tightening (loosening) the threaded end cover. In addition, the maximum working stroke of the piston rod can be adjusted by tightening (loosening) the sensor sleeve to meet the requirements of the starting force of the wheel brake and the maximum stroke of the brake actuator for different models of simulators.

[0024] The present invention discloses a general-purpose helicopter simulator wheel brake actuator. The invention is not only compact in structure, convenient to install, stable and reliable, can collect brake signals and simulate the wheel brake force feeling, but also can adjust the starting force of the wheel brake and the maximum stroke of the wheel brake actuator, and can be applied to the control load control systems of various types of helicopter simulators, which can shorten the design cycle and reduce the processing cost.

[0025] The above are only specific embodiments of the present invention. The present invention has been described in detail, and the parts not elaborated are conventional technologies. However, the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A general-purpose helicopter simulator wheel brake actuator, characterized in that, Including: Base (1), linear displacement sensor (2), sensor sleeve (3), cylindrical compression spring (4), spring sleeve (5), piston rod (6), adjusting shim (7), threaded end cap (8), stop washer (9), thin nut (10), rod end bearing (11); One end of the base (1) is a double-ear with a reamed hole, the other end is an external thread sleeve, and a side hole is opened in the middle; the linear displacement sensor (2) is composed of a housing and a thimble, and has an external thread by itself; one end of the sensor sleeve (3) is an internal thread sleeve, and the other end contains an external thread and a threaded hole; the piston rod (6) has a blind hole at one end and a threaded hole at the other end; the threaded end cap (8) contains a through hole in the middle; The linear displacement sensor (2) is screwed into the threaded hole of the sensor sleeve (3) through the thread, and the housing of the linear displacement sensor (2) is placed in the inner cavity of the sensor sleeve (3); the signal wire of the linear displacement sensor (2) is led out from the side hole of the base (1), and the linear displacement sensor (2) is threadedly connected to the sensor sleeve (3); the sensor sleeve (3) is threadedly connected to the spring sleeve (5); then the cylindrical compression spring (4) is placed in the spring sleeve (5); the threaded end cap (8) is sleeved on the piston rod (6), the adjusting shim (7) is placed at the thread of the threaded end cap (8), and this assembly is screwed into the spring sleeve (5); the rod end bearing (11) is screwed into the thin nut (10), this assembly is screwed into the piston rod (6), and a stop washer (9) is added between the rod end bearing (11) and the thin nut (10). After the whole machine debugging of the standby wheel brake actuator is completed, the stop washer (9) is bent; The inner wall of the spring sleeve (5) is coated with grease; When the pilot steps on the foot pedal, the foot pedal converts the angular displacement into a linear displacement and transmits it to the piston rod. The piston rod then pushes the linear displacement sensor, and the linear displacement sensor can collect a unique signal. At the same time, the piston rod compresses the spring, and the spring reaction force can simulate the wheel brake force; the size of the brake starting force is adjusted by tightening or loosening the threaded end cap. In addition, the maximum working stroke of the piston rod is adjusted by tightening or loosening the sensor sleeve to meet the requirements of the wheel brake starting force and the maximum stroke of the brake actuator for different types of simulators.

2. A general-purpose helicopter simulator wheel brake actuator according to claim 1, characterized in that The linear displacement sensor (2) is a self-restoring linear displacement sensor.

3. A general-purpose helicopter simulator wheel brake actuator according to claim 1, characterized in that The thread of the threaded end cap (8) is a fine-pitch external thread, the size is adapted to the thread of the spring sleeve (5), and the head is a regular hexagon.

4. A general-purpose helicopter simulator wheel brake actuator according to claim 1, characterized in that The stop washer (9), thin nut (10), and rod end bearing (11) are selected as standard parts.

5. A general-purpose helicopter simulator wheel brake actuator according to claim 1, characterized in that The cylindrical compression spring (4) is a cylindrical helical compression spring, and its two ends are closed coils and ground flat.

6. A general-purpose helicopter simulator wheel brake actuator according to claim 1, characterized in that The spring sleeve (5) is a hollow sleeve with internal threads at both ends.

7. A general-purpose helicopter simulator wheel brake actuator as claimed in claim 1, wherein The piston rod (6) has double shoulders near the blind hole section.

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