JP4011365B2 - Rotation drive - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for rotationally driving various types of rotated bodies. More specifically, the present invention relates to a rotary drive device using fluid pressure such as compressed air and gravity.
[0002]
[Prior art]
Conventionally, for example, an engine or a motor has been widely used as means for rotationally driving various types of rotated bodies. This type of rotational drive means requires fuel such as gasoline, a commercial power source or a power source such as a battery, and cannot be driven when such fuel or power source is not available or cannot be used.
[0003]
[Problems to be solved by the invention]
The present invention has been proposed in view of the above-described problems, and an object of the present invention is to provide a rotational drive device that can obtain a rotational force without using the above-described engine or motor.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, a rotary drive device according to the present invention has the following configuration.
[0005]
That is, a support frame that is fixed to a rotation shaft that is freely rotatable on a gantry, a balance weight that is provided on the support frame so as to be movable back and forth in a direction orthogonal to the rotation shaft, and the balance weight that is the rotation shaft. a plurality of rotating unit that includes a fluid cylinder for advancing and retracting movement in a direction perpendicular to the, on said rotary shaft, mounted Rutotomoni shifted by a predetermined angle in the circumferential direction, the plurality of rotating unit and the A rotary switching valve that has a manifold that rotates integrally with the rotating shaft, and that sequentially supplies the fluid from the fluid supply source to the fluid cylinder of each of the rotating body units is provided on the rotating shaft . by sequentially supplied to the fluid cylinder of said rotary member unit of fluid through the rotary selector valve, sequentially balance weight of said rotary member unit It is moved in a direction orthogonal to the serial rotation axis, and wherein the rotating the rotary shaft together with said rotary member unit in variations of weight balance by movement of the balance weight.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be specifically described based on 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.
[0007]
In the figure, reference numeral 1 denotes a gantry, and a rotating shaft 2 is rotatably provided on the upper part of a pair of left and right columns 1a provided integrally with the gantry 1, and a plurality of rotating shafts 2 are provided on the rotating shaft 2, Rotating body units 3A to 3C are attached. As shown in FIG. 3, each of the rotating body units 3 </ b> A to 3 </ b> C advances and retreats a balance weight 5 made of metal or the like in a rectangular tube-like support frame 4 fixed to the rotating shaft 2 in a direction perpendicular to the rotating shaft 2. A fluid cylinder 6 such as an air cylinder that is provided so as to be movable and moves the balance weight 5 forward and backward is attached to the outer surface of the support frame 4.
[0008]
The balance weight 5 and the fluid cylinder 6 are provided in pairs in this embodiment, and the piston rods 6a of the fluid cylinders 6 are connected and fixed to connecting plates 7 attached to both ends of the balance weight 5. In the figure, 6b is a piston, 8 is a compression coil spring that is contracted between the fluid cylinder 6 and the connecting plate 7 on the outer periphery of the piston rod 6a, and 9 is a guide roller that guides the back and forth movement of the balance weight 5.
[0009]
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, or approximately 120 degrees as shown in FIG. The fluid cylinder 6 of 3C is configured to sequentially supply fluid such as air from a fluid supply source such as an air compressor (not shown) through a rotary switching valve 10 provided at the end of the rotary shaft 2. .
[0010]
The rotary type switching valve 10 comprises a fixed cylinder 11 and a rotary manifold 12 as shown in FIG. 4, and the fixed cylinder 11 is integrated with the upper end of the column 1a of the gantry 1 with bolts or the like omitted in the drawing. The manifold 12 is configured to rotate integrally with the rotating body units 3A to 3C and the rotating shaft 2 around the fixed cylinder 11.
[0011]
A fluid supply passage 11a is formed in the fixed cylinder 11 as shown in FIG. 4A, and air from a fluid supply source such as an air compressor (not shown) is provided at one end of the passage 11a. An introduction hose 13 for introducing a fluid is connected in communication via 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 cylinder 11, and the opening is formed in an oval shape having a long circumferential direction.
[0012]
On the other hand, the manifold 12 is formed with a plurality of fluid passages 12a communicating with the openings sequentially at equal intervals in the circumferential direction, six in the case shown in the figure, and each of the rotating body units 3A to 3C is formed in each fluid passage 12a. A supply hose 14 for supplying fluid to the fluid cylinder 6 is connected in communication via a joint fitting 14a, and the other end of each supply hose 14 is connected to the fluid cylinder 6 of each of the rotating body units 3A to 3C with a joint fitting 14a such as a nipple. It is connected through communication.
[0013]
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 cylinder 11 through the introduction hose 13, and is introduced into the fluid supply passage 11a. The fluid is sequentially supplied from the fluid passage 12a through the supply hose 14 into the fluid cylinder 6 of each of the rotating body units 3A to 3C by the rotation of the manifold 12, and the piston in each cylinder is operated. In this embodiment, every time the manifold 12 rotates about 60 degrees in the clockwise direction in FIGS. 1 and 4A, the fluid is sequentially supplied to one of the fluid cylinders 6 of the rotating body units 3A to 3C, and then rotated. The fluid is sequentially supplied to the other fluid cylinder 6 of the body units 3A to 3C.
[0014]
In FIG. 3, reference numeral 15 denotes a recirculation hose for recirculating air in the cylinder chamber on the pressure receiving side when a fluid is supplied into each fluid cylinder 6 and the piston is operated. The two fluid cylinders 6 provided in 3C are connected in communication. That is, in FIG. 3A, the ends of the left fluid cylinder 6 and the right fluid cylinder 6 opposite to the piston rod 6a are connected to each other by the circulating hose 15. In the figure, reference numeral 15a denotes a fitting fitting such as a nipple for connecting the circulating hose 15 to the fluid cylinder 6.
[0015]
In the above configuration, the three rotating body units 3A to 3C are initially in a state where the left and right balance is maintained, for example, in the state of FIG. 1 , and at that time, the rotating body unit 3A is in the state of FIG. . In the rotary type switching valve 10, the fluid passage 12 a of the manifold 12 communicating with the fluid cylinder 6 positioned on the upper side in the drawing of the rotating body unit 3 </ b> A is in communication with the fluid supply passage 11 a of the fixed cylinder 11.
[0016]
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 via the introduction hose 13, the fluid is rotated via the rotary switching valve 10. The fluid is supplied to the upper fluid cylinder 6 in FIG. 5A of the body 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 connecting plate 7 are moved. The balance weight 5 moves up to the chain line position in FIG.
[0017]
At that 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 circulating hose 15, and the fluid cylinder Along with the repulsive force of the compression coil spring 8 provided in the above, it works to assist the lifting operation of the balance weight 5.
[0018]
Further, when air is circulated into the lower fluid cylinder 6 via the recirculation hose 15 and the piston 6b in the cylinder 6 rises, the air in the upper cylinder chamber is supplied to the supply hose 14 and the manifold 12. The exhaust passage 11b is discharged into the atmosphere from the exhaust passage 11b formed in the fixed cylinder 11 shown in FIG. 4 through the fluid passage 12a. The exhaust passage 11b is fixed as shown in FIG. 4A in this embodiment. The fluid supply passage 11a formed in the cylindrical body 11 is formed on the opposite side in the diametrical direction substantially in the same manner as the fluid supply passage 11a. The exhaust passage 11b has an end opposite to the manifold 12 at the end of the manifold 12 and the support 1a. It opens to the lower surface side of the fixed cylinder 11 between.
[0019]
When the balance weight 5, as described above increases, the left-right balance of is kept rotating unit 3A by weight of the right side is increased in FIG. 1 and FIGS. 5 (a) from the state had the rotator unit as Together with 3B and 3C and the rotating shaft 2, it rotates clockwise in the figure and moves to the position shown in FIG. Then, the next rotating body unit 3B is rotated to the state shown in FIG. 5A, and the rotary switching valve 10 is in the fluid passage 12a of the manifold 12 communicating with the fluid cylinder 6 located on the upper side in the figure of the unit 3B. Is communicated with the fluid supply passage 11 a of the fixed cylinder 11.
[0020]
In this state, the fluid from the fluid supply source not shown in the figure is supplied to the fluid cylinder 6 on the upper side of the rotor unit 3B via the rotary switching valve 10, and the rotor unit in the same manner as described above. 3B rotates to the state of FIG. 5B, and accordingly, the rotating body units 3A and 3C and the rotating shaft 2 also rotate in the same direction. Then, the rotating body unit 3C is now in the state shown in FIG. 5A, and the fluid is supplied to the fluid cylinder 6 on the upper side of the unit 3C to rotate to the state shown in FIG.
[0021]
Thus, almost by sequentially fluid is supplied to the upper side of the fluid cylinder 6 of the rotating unit which has been rotated in the state of FIG. 5 (a), the rotating unit 3A~3C rotates together with the rotary shaft 2 Thus, a rotational force can be applied to the rotary shaft 2, and various objects can be driven to rotate by connecting an object to be rotated to the rotary shaft 2, for example.
[0022]
For example, in an internal combustion engine, a steam engine, etc., the rotational force is obtained by the forward / backward movement of the piston by the explosive force or the steam pressure obtained by the combustion of the fuel. In the present invention, only the fluid pressure is used without using the above-mentioned fire. It is possible to provide a rotational drive device that can obtain a rotational force and has high safety.
[0023]
In the above-described embodiment, two balance weights 5 are provided for each of the rotary body units 3A to 3C. However, for example, as shown in FIG. In this case, in order to avoid interference with the balance weight 5, the rotating shaft 2 is provided only at both ends of the rotating body units 3 </ b> A to 3 </ b> C that are overlapped and fixed to each other without penetrating the support frame 4 as shown in the figure. . Alternatively, the rotary shaft 2 is provided so as to penetrate through the support frame 4 in the same manner as in the above embodiment, and the insertion weight 5a of the rotary shaft 2 is provided in the balance weight 5 so that the insertion hole 5a avoids interference with the rotary shaft 2. Therefore, it may be formed in a long hole shape as shown by a chain line in FIG.
[0024]
In the above embodiment, three rotary body units are provided. However, two or more rotary body units may be provided, and the rotary body units 3A to 3C as described above may be provided on an end surface or a peripheral surface of an object to be rotated. It can also be installed directly. Further, in the above embodiment, a single acting type fluid cylinder is used, but a backward acting type may be used, and the number of fluid cylinders is appropriate, and one or a plurality of fluid cylinders may be provided for each unit. Good.
[0025]
【The invention's effect】
As described above, since the rotary drive device according to the present invention has the above-described configuration, it can rotate various objects if there is a fluid supply source such as a compressor without using an engine or a motor. For example, it is effective when an engine or an electric motor cannot be used due to strictly prohibited fire, or when an air motor or the like is insufficient or inappropriate. The fluid supply source is not limited to a compressor or the like, and wind force or hydraulic power existing in nature or fluid pressure obtained from them can be used.
[Brief description of the 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 rotating body 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.
(B) is a partially cutaway right side view thereof.
FIGS. 5A and 5B are explanatory views showing a rotating state of the rotating body unit. FIG.
FIG. 6A is a front view showing a modified example of the rotating body unit.
(B) is the bb sectional view taken on the line in (a).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 1a Support | pillar 2 Rotating shaft 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 Introduction Hose 14 supply hose 15 recirculation hose

Claims (1)

A support frame fixed to a rotation shaft that is freely rotatable on a gantry, a balance weight provided on the support frame so as to be movable back and forth in a direction orthogonal to the rotation shaft, and the balance weight orthogonal to the rotation shaft a plurality of rotating unit that includes a fluid cylinder for advancing and retreating in the direction of, on the rotating shaft, mounted Rutotomoni shifted by a predetermined angle in the circumferential direction, the plurality of rotating unit and the rotating shaft A rotary switching valve for sequentially supplying fluid from the fluid supply source to the fluid cylinder of each of the rotating body units is provided on the rotating shaft, and the fluid from the fluid supply source is supplied to the fluid. by sequentially supplied to the fluid cylinder of said rotary member unit via the rotary switching valve, in sequence said turn the balance weight of said rotary member unit It is moved in a direction perpendicular to the axial rotational driving apparatus characterized by rotating the rotary shaft together with said rotary member unit in variations of weight balance by movement of the balance weight.

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