JPH10244990A - Gyro type anti-rocking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling device for cooling a damper with a simple structure, by forming an air discharge opening on a gimbal, installing an air duct of which an inlet edge is opposite to the air discharge opening, and an outlet edge is opened to the damper, and blowing the air current generated by the rotation of a flywheel to the damper. SOLUTION: The air ducts 1 are installed at the left and right of a gimbal case 4, in such manner that one edge thereof is opened toward an air discharge opening 8 of a side cover 3 joint part, and the other edge is opened toward the left and right dampers 2, 2. The air discharge opening 8 is formed by cutting a part of a mounting part of the side cover 3 to a gimbal case 4. In the operation of a CMG anti-rocking device, the flywheel 6 is rotated and driven by a motor 7, thereby the air current is generated in the gimbal case 4 and the side cover 3 by the rotation. This air current is taken out from the air discharge opening 8 to be guided to the air ducts 1. This air current is blown in a condition that a flowing speed is increased in the air ducts, to cool the dampers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for suppressing a rise in the temperature of a damper in a moment control gyro type rocker.

[0002]

2. Description of the Related Art The principle of a moment control gyro type rocker is that a gyro torque is generated in a direction perpendicular to the above-mentioned rotational force when a rotational force is externally applied to a high-speed rotating top (flywheel). The gyro torque suppresses the swing of the structure.

FIGS. 5 to 7 show a conventional example of the gyro-type rocker (hereinafter abbreviated as CMG rocker), FIG. 5 is a front view thereof, and FIG. 6 is a plan view thereof. 5 is a view from the arrow C), and FIG. 7 is a side view (a view from the arrow D in FIG. 5). Figure 5
In FIG. 7, reference numeral 4 denotes a gimbal case which is swingably supported on the left and right by a support post 5, and a flywheel 6 driven by a motor 7 is housed inside the gimbal case 4. Reference numeral 3 denotes a side cover that covers both side surfaces of the gimbal case 4, and reference numeral 2 denotes a damper that is opposed to the left and right sides of the gimbal case 4 and controls the swing of the gimbal case 4 by viscous friction of silicon oil.

The inside of the damper 2 is composed of a vane having an orifice and a damping silicone oil filled therein. Since the capacity of the damper 2 is determined by the resistance when passing through the orifice of the vane, when the viscosity of the silicone oil increases and decreases, the resistance decreases, the capacity of the damper 2 decreases, and the CMG decreases. The function of the rocker decreases.

Conventionally, as means for suppressing the temperature rise of the damper 2, the damper 2 is cooled by natural heat radiation from the damper 2, heat conduction from the damper 2 through a column 5 in contact with the damper 2, and the like. Was.

[0006]

As described above, the CMG
In the vibration reducer, it is essential to suppress the temperature rise of the damper 2. However, as the cooling means,
The cooling means based on the natural heat radiation from the damper 2 as described above is used only.
When the output of the G rocker increases, it is difficult to obtain a cooling effect sufficient to suppress a temperature rise.

[0007] Since the cooling by the natural heat radiation depends on the surrounding temperature, when the air temperature is high in summer or the like, the cooling function naturally deteriorates and the damper 2 is likely to overheat.

On the other hand, in addition to the above, means for cooling the damper 2 by increasing the capacity of the CMG vibration reducer and providing a heat exchanger for removing heat from the damper 2 by heat exchange has been proposed. In the case of such means, there is a problem that the CMG vibration reducer is increased in size and weight, and the manufacturing cost is also increased.

Accordingly, an object of the present invention is to provide a very simple and low-cost structure for cooling a damper so that the damper can be maintained at an appropriate temperature without increasing the size and cost of the CMG vibration reducer itself. It is to provide a cooling device.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a gist of the invention is to provide a rotary-driven flywheel and a swingably supported stationary member. In a gyro-type rocker including a gimbal in which the flywheel is housed and a damper for controlling the swing of the gimbal by viscous friction, an air discharge port for taking out the air inside the gimbal is provided. In addition, an air duct whose inlet end is opposed to the air discharge port and whose outlet end is opened toward the damper is provided, an air flow generated by the rotation of the flywheel is taken out from the air discharge port, via the air duct A gyro-type rocker, characterized in that the damper is blown to cool the damper.

According to the above means, during the operation of the rocker, the air flow generated by the rotation of the flywheel in the gimbal is blown out from the air discharge port provided in the gimbal, and is opposed to the discharge port. It flows into the air duct from the inlet end of the provided air duct, and is jetted toward the damper from an outlet end opened to face the damper, thereby cooling the damper.

That is, according to the means of the present invention, a very simple and low-cost apparatus in which an air outlet is provided in a gimbal, and an air duct is provided so that an inlet end faces the same outlet and an outlet end faces a damper. Thus, by utilizing the kinetic energy of the airflow necessarily generated by the rotation of the flywheel, the damper can be forcibly cooled to a predetermined temperature or lower.

In the above means, the air duct may be made of a material having a high thermal conductivity such as an aluminum alloy, and may be configured to radiate heat conducted from the damper through a supporting member thereof. Included in the means of the invention.

According to this structure, since the air duct is made of a good heat conductor, a part of the heat of the damper is transmitted to the air duct through the support member and is radiated from the surface of the air duct. Thus, the cooling of the damper is further promoted.

In the above means, the air discharge port is opened in a slit shape in the gimbal to allow the air to flow into the air duct at a desired flow rate. Spraying the damper is a preferable mode for improving the cooling effect of the damper.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a front view of a gyro-type rocker (hereinafter abbreviated as CMG rocker) provided with a moment control means according to an embodiment of the present invention, FIG. 2 is a plan view (a view taken in the direction of arrow A in FIG. 1), FIG. 3 is a side view (viewed in the direction of arrow B in FIG. 1), and FIG. 4 is an enlarged view of a Z portion in FIG.

In FIG. 1 to FIG. 4, reference numeral 4 denotes a gimbal case which is supported by a column 5 so as to be swingable, and 3 denotes a side cover which covers a side portion of the gimbal case, which is defined by the gimbal case 4 and the side cover 3. A flywheel 6 driven by a motor 7 is accommodated in the internal space. Numeral 2 denotes a damper opposed to the left and right sides of the gimbal case 4 for controlling the swing of the gimbal case 4 by viscous friction between a silicone oil housed therein and a damper member (not shown). The above configuration is the same as that of the conventional CMG vibration reducer shown in FIGS.

Numerals 1 are air ducts provided on the right and left sides of the gimbal case 4 with bolts on the columns 5 or fixed to other stationary members. One end of the air duct 1 is open to an air discharge port 8 at the base of the side cover 3 described later, and the other end is open to the left and right dampers 2 and 2. The above air duct 1
As shown in FIG. 2, the cooling air flows through the inside thereof so that the cooling air blows out toward the damper 2 at a predetermined flow rate.
, The opening area of the outlet end 1b is changed to the inlet end 1a.
It is formed smaller than that of. The air duct 1 is made of a material having good heat conductivity, such as an aluminum alloy, in order to perform a heat radiation action by itself.

Numeral 8 denotes an air discharge port, as shown in FIG. 4, which is provided by cutting out a part of a mounting portion (fixed portion by welding) of the side cover 3 to the gimbal case 4. As shown in FIG. 1, the air discharge port 8 is cut open in a slit shape along the height direction of the side cover 3.
Therefore, the inlet end 1a of the air duct 1 is formed at a height substantially equal to the opening length of the air discharge port 8, and is installed such that the inlet end 1a is close to the air discharge port 8.

When the flywheel 6 is driven to rotate by the motor 7 during operation of the CMG vibration reducer constructed as described above, the rotation causes the gimbal case 4 and the side cover 3 in which the flywheel 6 is stored. Airflow is generated inside. This air flow causes air resistance (windage loss) of the flywheel 6. In the embodiment of the present invention, this air flow is taken out from the air discharge port 8 communicating with the space and is sent to the air duct 1. Lead.

That is, since the air discharge port 8 is formed in a slit shape, the air flow blows out from the air discharge port 8 at a constant flow rate, and is opened facing the air discharge port 8. The air duct 1 enters the air duct 1 from an inlet end 1a of the air duct 1. Since the outlet end 1b of the air in the air duct 1 is narrowed, the air is blown out at an increased flow rate, and is blown mainly to the lower portion of the damper 2. As a result, the damper 2 is cooled, and a rise in the temperature of the silicone oil and a decrease in the viscosity due to this are avoided, so that the damper 2 exhibits a required function.

Further, since the air duct 1 is made of a good heat conductor as described above, a part of the heat of the damper 2 is transmitted to the air duct 1 through the support pillar 5 and is transmitted from the outer surface of the air duct 1. The heat is dissipated, and the damper 2 is also cooled by the dissipated heat.

As described above, in the embodiment of the present invention, the slit-shaped air discharge port 8 is opened in the mounting portion of the side cover 3 to the gimbal case 4 and the inlet end 1 is formed.
a is a very simple device in which the air duct 1 is provided so as to face the air discharge port 8 and the outlet end 1b faces the damper 2, and the kinetic energy of the air flow necessarily generated by the rotation of the flywheel is obtained. By using
The damper 2 can be forcibly cooled below a predetermined temperature.

[0024]

The present invention is configured as described above.
According to the present invention, the gimbal is provided with an air outlet, the inlet end is opposed to the outlet, and the air duct is provided so that the outlet end faces the damper. By utilizing the kinetic energy of the airflow generated by the rotation of the wheel, the damper can be forcibly cooled to a predetermined temperature or less.
The temperature of the damper can always be maintained at an appropriate temperature.

According to the second aspect of the present invention, since the air duct is made of a good heat conductor, a part of the heat of the damper is transmitted to the air duct through the support member, and the heat is transmitted from the surface of the air duct. The heat dissipation further enhances the cooling effect of the damper.

[Brief description of the drawings]

FIG. 1 is a front view of a CMG rocker according to an embodiment of the present invention.

FIG. 2 is a view as viewed in the direction of the arrow A in FIG. 1 (plan view).

FIG. 3 is a view as viewed in the direction of arrow B in FIG. 1 (side view).

FIG. 4 is an enlarged view of a portion Z in FIG. 2;

FIG. 5 is a front view showing a conventional CMG rocker.

FIG. 6 is a view taken in the direction of the arrow C in FIG. 5;

FIG. 7 is a view taken in the direction of arrow D in FIG. 5;

[Description of Signs] 1 Air duct 1a Inlet end 1b Outlet end 2 Damper 3 Side cover 4 Gimbal case 5 Prop 6 Flywheel 7 Motor 8 Air outlet

Claims (2)

[Claims] 1. A flywheel that is driven to rotate, a gimbal that is swingably supported by a stationary member and accommodates the flywheel therein, and a damper that controls the swing of the gimbal by viscous friction. In the gyro-type rocker provided, the gimbal is provided with an air discharge port for taking out internal air, and the air inlet is provided with an air duct having an inlet end facing the air discharge port and an outlet end opening toward the damper. A gyro-type rocker, wherein an air flow generated by the rotation of the flywheel is taken out from the air discharge port and blown to a damper through the air duct to cool the damper. 2. The air duct according to claim 1, wherein the air duct is made of a material having a high thermal conductivity such as an aluminum alloy, and is configured to radiate heat conducted from the damper through a support member thereof. Gyro type rocker.