JP2003247507A - Rotary driving system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary driving system capable of obtaining rotary force without using an engine, a motor or the like in a system rotatably driving various driven bodies. <P>SOLUTION: A plurality of rotary body units 3A to 3C each are provided with a balance weight 5 capable of moving back and forth to a direction orthogonal to a rotary shaft 2 and a fluid cylinder 6 moving the balance weight back and forth, and are installed on the rotary shaft 2, in which the rotary body units are shifted by a designated angle in a peripheral direction of the rotary shaft 2. The rotary driving system obtains rotary force by moving the balance weights 5 of the rotary body units 3A to 3C in sequence by the fluid cylinders 6. Further, the fluid cylinders 6 of the rotary body units 3A to 3C are supplied with a fluid fed from a fluid supply source in sequence via a rotary switch valve 10. The rotary switch valve 10 is provided on the rotary shaft 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for rotationally driving various kinds of objects to be rotated. More specifically, the present invention relates to a rotary drive device that utilizes the fluid pressure of compressed air or the like and gravity.

[0002]

2. Description of the Related Art Conventionally, for example, an engine or a motor has been widely used as a means for rotationally driving various kinds of objects to be rotated. This type of rotary drive means requires fuel such as gasoline and a commercial power source or a power source such as a battery, and cannot be driven when there is no such fuel or power source or it cannot be used.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above problems, and provides a rotary drive device capable of obtaining a rotational force without using the above engine, motor, or the like. The purpose is to

[0004]

In order to achieve the above object, a rotary drive device according to the present invention has the following configuration.

That is, a plurality of rotating body units each having a balance weight that can be moved back and forth in a direction orthogonal to the rotation axis and a fluid cylinder that moves the balance weight forward and backward are provided at a predetermined angle in the circumferential direction of the rotation axis. The balance weights of the respective rotary body units are sequentially moved by fluid cylinders so as to apply a rotational force to the rotary shafts.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below based on the embodiments shown in the drawings. FIG. 1 is a front view showing an embodiment of a rotary drive device according to the present invention, and FIG. 2 is a right side view thereof.

In the figure, reference numeral 1 is a pedestal, and a rotary shaft 2 is rotatably provided above the pair of right and left columns 1a integrally provided on the gantry 1. Is attached with three rotating body units 3A to 3C. Each of the rotary body units 3A to 3C is shown in FIG.
As shown in FIG. 3, a balance weight 5 made of metal or the like is provided in a support frame 4 in the shape of a rectangular tube fixed to the rotary shaft 2.
A fluid cylinder 6 such as an air cylinder for moving the balance weight 5 forward and backward in a direction orthogonal to
Is attached to the outer surface of the support frame 4.

In this embodiment, the balance weights 5 and the fluid cylinders 6 are provided in pairs, and the piston rods 6a of the fluid cylinders 6 are connected and fixed to the connecting plates 7 attached to both ends of the balance weights 5. There is. In the figure, 6b is a piston, 8 is a piston rod 6
A compression coil spring, which is contracted between the fluid cylinder 6 and the connecting plate 7 on the outer periphery of a, and a guide roller 9, which guides the forward and backward movement of the balance weight 5.

The rotating body units 3A to 3C are installed and fixed by being shifted by a predetermined angle in the circumferential direction of the rotating shaft 2, and in the case of the figure, they are displaced by about 120 degrees as shown in FIG. Fluid such as air from a fluid supply source such as an air compressor (not shown) is sequentially supplied to the fluid cylinders 6 of the units 3A to 3C via a rotary switching valve 10 provided at the end of the rotary shaft 2. It is a composition.

As shown in FIG. 4, the rotary switching valve 10 comprises a fixed cylindrical body 11 and a rotary manifold 12, and the fixed cylindrical body 11 is provided at the upper end of the support column 1a of the gantry 1 with a bolt (not shown). And the like, and the manifold 12 surrounds the fixed cylinder 11 around the rotary unit 3
It is configured to rotate integrally with A to 3C and the rotary shaft 2.

A fluid supply passage 11a is formed in the fixed cylindrical body 11 as shown in FIG.
An introduction hose 13 for introducing a fluid such as air from a fluid supply source such as an air compressor (not shown) is communicatively connected to one end of a through a joint fitting 13a such as a nipple. The other end of the fluid supply passage 11a opens to the outer peripheral surface side of the fixed cylindrical body 11, and the opening is formed in an oval shape having a long circumferential direction.

On the other hand, in the manifold 12, a plurality of fluid passages 12a are formed at regular intervals in the circumferential direction, and six fluid passages 12a are formed in the manifold 12 in the circumferential direction. The fluid passages 12a are formed in the respective fluid passages 12a. A supply hose 14 for supplying a fluid to the fluid cylinders 3A to 3C is communicatively connected via a joint metal fitting 14a, and the other end of each of the supply hoses 14 is connected to the fluid cylinder 6 of each of the rotating body units 3A to 3C such as a nipple. It is connected and connected via a joint metal fitting 14a.

A fluid such as air from a fluid supply source such as an air compressor (not shown) is sequentially introduced into the fluid supply passage 11a of the fixed cylindrical body 11 through the introduction hose 13, and inside the fluid supply passage 11a. The fluid introduced into the cylinder is sequentially supplied from the fluid passage 12a through the supply hose 14 into the fluid cylinder 6 of each of the rotor units 3A to 3C by the rotation of the manifold 12 to operate the piston in each cylinder. is there. In this embodiment,
Each time the manifold 12 rotates about 60 degrees clockwise in FIGS. 1 and 4A, the rotor units 3A to 3A are rotated.
After the fluid is sequentially supplied to one fluid cylinder 6 of C,
The fluid is sequentially supplied to the other fluid cylinder 6 of the rotating body units 3A to 3C.

In FIG. 3, reference numeral 15 is a recirculation hose for recirculating the air in the cylinder chamber on the pressure receiving side when a fluid is supplied into each of the fluid cylinders 6 and the piston is operated. Units 3A-3C
Is connected to two fluid cylinders 6 provided in the.
That is, in FIG. 3A, the left fluid cylinder 6 and the right fluid cylinder 6 are connected at their respective ends opposite to the piston rod 6a by the circulation hose 15. In the figure, reference numeral 15a is a fitting such as a nipple for communicating and connecting the reflux hose 15 to the fluid cylinder 6.

In the above structure, the three rotary body units 3A to 3C are initially in a state where the left and right balances are maintained, for example, in the state of FIG. 2, and at that time, the rotary body unit 3A is shown in FIG. Is in a state. Further, the rotary switching valve 10 is in a state in which the fluid passage 12a of the manifold 12 communicating with the fluid cylinder 6 located on the upper side in the drawing of the rotating body unit 3A communicates with the fluid supply passage 11a of the fixed cylinder 11.

In this state, when a fluid such as air is supplied from a fluid supply source such as an air compressor (not shown) to the fluid supply passage 11a of the fixed cylinder 11 through the introduction hose 13, the rotary switching valve 10 is activated. Fluid is supplied to the upper fluid cylinder 6 in FIG. 5 (a) of the rotary unit 3A, and the piston 6b of the cylinder 6 rises against the compression coil spring 8 and accordingly the piston rod 6a.
And the balance weight 5 is shown in FIG.
Ascend to the position indicated by the chain line in (a).

At this time, the air in the cylinder chamber on the pressure receiving side of the upper fluid cylinder 6 (above the piston 6b in the figure) is sent into the lower fluid cylinder 6 via the recirculation hose 15. Together with the repulsive force of the compression coil spring 8 provided in the fluid cylinder, it serves to assist the lifting operation of the balance weight 5.

Further, when air is circulated into the lower fluid cylinder 6 through the circulation hose 15 and the piston 6b in the cylinder 6 rises, the air in the cylinder chamber above the cylinder 6 is supplied to the supply hose 14 and The exhaust passage 11b formed in the fixed cylinder 11 shown in FIG. 4 is discharged into the atmosphere through the fluid passage 12a of the manifold 12.
The exhaust passage 11b is shown in FIG.
The fluid supply passage 11 formed in the fixed cylinder 11 as shown in FIG.
a is formed in substantially the same manner as the fluid supply passage 11a on the diametrically opposite side, and the manifold 1 of the exhaust passage 11b is formed.
2 has an end portion on the side opposite to the manifold 12 and the column 1a.
Is opened on the lower surface side of the fixed cylindrical body 11 between and.

When the balance weight 5 rises as described above, the weight on the left side in FIGS. 2 and 5 (a) increases from the state where the left and right balances are maintained as described above, and the rotary unit 3A rotates. Body unit 3B / 3C
5 together with the rotation shaft 2 and the clockwise rotation in the figure.
Move to the position of (b). Then, the next rotary body unit 3B rotates to the state of FIG. 5A, and the rotary switching valve 1
In the state of 0, the fluid passage 12a of the manifold 12 that communicates with the fluid cylinder 6 located on the upper side of the unit 3B in the figure communicates with the fluid supply passage 11a of the fixed cylinder 11.

In this state, the fluid from the fluid supply source (not shown) is supplied to the upper fluid cylinder 6 of the rotary unit 3B via the rotary switching valve 10 in the same manner as above. Rotating body unit 3B
Rotates to the state of FIG. 5 (b), and accordingly, the rotary body units 3A and 3C and the rotary shaft 2 also rotate in the same direction. Then, this time, the rotary unit 3C enters the state of FIG. 5A, the fluid is supplied to the upper fluid cylinder 6 of the unit 3C, and the rotary unit 3C rotates to the state of FIG.

As described above, the fluid is sequentially supplied to the upper fluid cylinder 6 of the rotating body unit which has rotated substantially in the state shown in FIG. 5A, whereby the rotating body unit 3A.
3C can rotate together with the rotating shaft 2 to give a rotating force to the rotating shaft 2. For example, if an object to be rotated is connected to the rotating shaft 2, various objects can be rotationally driven. It is possible.

Further, for example, in an internal combustion engine or a steam engine, an explosive force obtained by combustion of fuel or a rotational force is obtained by a piston moving forward / backward movement due to vapor pressure, but in the present invention, fluid is used without using the above-mentioned fire. It is possible to provide a highly safe rotation drive device that can obtain a rotation force only by pressure.

In the above embodiment, the balance weight 5 is used.
Two are provided for each of the rotary body units 3A to 3C, but it is also possible to configure one balance weight 5 as shown in FIG. 6, for example. In this case, in order to avoid interference with the balance weight 5, the rotary shaft 2 is supported by the support frame 4 as shown in the figure.
It is provided only on both ends of the rotating body units 3A to 3C which are overlapped with each other and are connected and fixed without penetrating therethrough.
Alternatively, the rotary shaft 2 is provided so as to penetrate through the support frame 4 as in the above-described embodiment, and the balance weight 5 is provided with an insertion hole 5a for the rotary shaft 2 so that the insertion hole 5a does not interfere with the rotary shaft 2. Therefore, it may be formed in a long hole shape as shown by a chain line in FIG.

Further, in the above-mentioned embodiment, the rotary body unit has three units.
However, two or four or more may be provided, and the rotary body units 3A to 3C as described above may be directly attached to the end surface or the peripheral surface of the object to be rotated.
Further, in the above embodiment, the single-acting type is used as the fluid cylinder, but the returning type may be used, and the number thereof is appropriate, and one or more units may be provided for each unit. Good.

[0025]

As described above, since the rotary drive device according to the present invention has the above-mentioned structure, various objects can be rotationally driven if there is a fluid supply source such as a compressor without using an engine or a motor. If you cannot use an engine or an electric motor because fire is strictly prohibited,
Alternatively, it is effective when an air motor or the like is insufficient or inappropriate. Further, the fluid supply source is not limited to a compressor or the like, and wind power, hydraulic power or the like existing in nature or a fluid pressure obtained from them can be used.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a rotary drive device according to the present invention.

FIG. 2 is a right side view thereof.

FIG. 3A is a front view of a rotary unit. (B) is the right side view. (C) is the cc sectional view taken on the line in (a).

FIG. 4A is a partially cutaway front view of a rotary switching valve. FIG. 7B is a right side view with a part thereof cut away.

5A and 5B are explanatory views showing a rotating state of a rotating body unit.

FIG. 6A is a front view showing a modified example of the rotary unit. (B) is the bb sectional view taken on the line in (a).

[Explanation of symbols]

1 stand 1a prop 2 rotation axes 3A-3C rotating body unit 4 Support frame 5 Balance weight 6 fluid cylinder 6a Piston rod 6b piston 7 connecting plate 8 compression coil spring 9 Guide roller 10 Rotary switching valve 11 Fixed cylinder 12 manifold 13 Introducing hose 14 Supply hose 15 Return hose

Claims (2)

[Claims] 1. A plurality of rotating body units each having a balance weight capable of advancing and retracting in a direction orthogonal to a rotation axis and a fluid cylinder for advancing and retracting the balance weight.
A rotary drive characterized in that the rotary shaft is mounted on the rotary shaft by being shifted by a predetermined angle in the circumferential direction of the rotary shaft, and the balance weight of each rotary body unit is sequentially moved by a fluid cylinder to obtain a rotational force. apparatus. 2. A rotary drive device according to claim 1, wherein a rotary switching valve for selectively selectively supplying a fluid from a fluid supply source is provided on the rotary shaft in the fluid cylinder of each of the rotary body units.