JP6770325B2 - Water wheel device - Google Patents

Description

The present invention relates to a water turbine device in which a rotor provided in a water guide pipe is rotated by a water flow in the water guide pipe, and the rotation of the rotor is used as power.

In a conventional water turbine of this type, a rotor shaft long in the axial direction is arranged in a long water pipe, and a plurality of rotors are arranged in tandem on the rotor shaft, and a submersible generator is generated by rotating the rotor shaft. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-9012

In the invention described in Patent Document 1, when it is desired to increase the number of rotors, an additional water pipe is connected to the water pipe, and an additional shaft provided with the additional rotor is provided in the added water pipe. However, it is not easy to connect this additional shaft to the original rotor shaft.

In view of the above-mentioned problems of the prior art, the present invention connects a plurality of water pipes to form a unit pipe, and has an arbitrary number of rotating shafts integrally with the rotor according to the application and usage conditions. Provided is a turbine that allows the turbine unit to be easily formed by simply adding it so that it can be easily installed anywhere in the channel and that the rotor can be stably supported. The purpose is to do.

According to the present invention, the above problems are solved as follows.
(1) In a water wheel in which a rotating shaft provided with a rotor is arranged via front and rear bearing end plates in each of the long-connected water guide pipes and the rotation of the rotor is used as power, the bearing end. A bearing is arranged in the center of the plate to form a water passage portion around the plate, and each of the water guide pipes has an outward flange formed at the front and rear ends, and the front of the rear water guide pipe connected in the front and rear. The front and rear water guide pipes are connected by holding the bearing end plate between the flange of the portion and the rear flange of the front water guide pipe, and the rotation shafts of the front and rear water guide pipes at the time of connection are the rear guides. The tip of the rotating shaft in the water pipe is projected forward of the bearing end plate at the front end to connect with the rear end of the rotating shaft in the front water guiding pipe, and the tip of the rotating shaft in the front water guiding pipe is supported. The bearing end plate at the front end of the bearing is projected forward so that another water guide pipe and its internal rotating shaft are connected in the same step in front of the front water guide pipe.

According to such a configuration, by incorporating the water pipe as a part of the water pipe unit, not only the water pipe can be easily installed anywhere in the water pipe, but also a part of the existing water pipe is cut off and the water pipe is cut off. Instead, by simply arranging and connecting the turbine unit in series with the cut portion, the turbine can be easily installed at any location on the existing water pipe, and the rotating shaft of the rotor is squeezed. The pair of bearing end plates can stably support the rotor, and the pair of bearing end plates that hold the rotating shaft of the rotor act as a reinforcing material for the water pipe, and the water pipe is subjected to external force. It can be prevented from deforming.

(2) In the above item (1), the rotating shaft provided with the rotor is supported by the bearing of the bearing end plate in the water pipe, and the front and rear water pipes are connected in series by sandwiching the bearing end plate, and the front and rear are connected. Rotating shafts are connected in series with connecting means, and at least one rotor is located in one water pipe, and this combination forms a continuously connectable turbine unit.

According to such a configuration, an arbitrary number of water pipes and a rotating shaft integrated with a rotor can be added according to the application and usage conditions to easily form a water turbine unit, and each rotor can be formed. Can be stably supported.

(3) In the above item (1) or (2), outward flanges are provided at both ends of the water pipe in the longitudinal direction, and the outer peripheral portion of the bearing end plate is provided between the front and rear flanges of the water pipe connected to the front and rear. Hold and connect.

With such a configuration, with the rotating shaft bearing on the bearing, one surface of the outer peripheral portion of the bearing end plate is brought into contact with the outward flange of the water guide pipe and temporarily fixed, or then the bearing. An additional headrace that covers the additional rotary shaft after abutting the ends of the other additional rotary shaft against the free end of the rotary shaft that projects outward from the end plate and connecting them in a straight line with a connecting means. The outward flange at one end of the bearing can be easily joined in sequence by sandwiching the outer peripheral portion of the bearing end plate.

(4) In any of the above items (1) to (3), on the outer peripheral surface of the bearing end plate, the water pipes are provided on the front and rear surfaces so that protrusions are formed at the center of the front and rear surfaces. A fitting portion that can be fitted into the inner hole at the end portion is provided, the front and rear fitting portions are fitted into the inner hole at the end portion of the front and rear water pipes, and the bearing end plate is fitted with a flange in the front and rear water pipes. Hold and connect.

According to such a configuration, the bearing end plate can be easily positioned at the end of the water pipe by fitting the fitting portion of the bearing end plate into the inner hole of the end of the water pipe. It can be temporarily fixed.

(5) In any of the above items ( 1 ) to (4), the outer diameters of the tip of the rotating shaft in the rear water guide pipe and the opposite end of the rear end of the rotating shaft in the front water guiding pipe A male screw shaft having the same screw pitch as the screw pitch is provided, and the opposite end faces of the two male screw shafts have a contact surfaces that abut each other in the rotational direction around the central axis, and a convex portion and a concave portion that complement each other. Are provided so as to face each other so that the threads formed on the outer peripheral surfaces of the two male screw shafts are continuous with each other and the convex portion and the concave portion are fitted to each other so that the opposing end faces of the two male screw shafts are projected from each other. in a state where combined, and that are screwed Flip ne female to connect the abutting portion of both externally threaded shaft.

With this configuration, the Flip ne female, advance screwed into one of the externally threaded shaft, the opposite end faces of both the externally threaded shaft, as the convex portion and the concave portion are fitted to each other, abutting each other after, the Flip ne the female, by screwing in so that concatenates the abutting portion of both externally threaded shaft, the two rotary shafts can be easily and quickly coupled.
Further, since the screw thread formed on the outer peripheral surfaces of the externally threaded shaft is screwed to the Flip ne female, both externally threaded shaft is not only firmly coupled to the axial direction of the external force, both externally threaded shaft Since the convex portions and the concave portions formed on the opposite end faces are fitted to each other and their contact surfaces are in contact with each other in the rotational direction around the central axis, they are firmly coupled to the rotational force around the central axis. To.

(6) In the item (5), the tip portion of the rotation shaft of the rear portion of the water guide pipe, the opposite ends of the rear end portion of the rotary shaft of the front portion of the water guide pipe and an outer diameter and screw pitch identical and it was provided with externally threaded shaft, respectively, Ni Flip I female that match threaded so as to connect the contact end face of the male screw shaft after the front, providing a detent means for the detent from screwed the externally threaded shaft.

With this configuration, Flip ne females, by being prevented from rotating in one of the male screw shaft by detent means, resulting in the detent against the other of the male screw shaft, Flip I female but both externally threaded shaft It is possible to prevent the two male screw shafts from being disengaged from the screw shaft.

(7) In the above (6) section, wherein the female screw hole for set screw facing radially formed through the inside and outside Flip ne female, the tip of the set screw screwed into the female screw hole, wherein at Flip ne female or pressed against the outer peripheral surface of the male screw shaft in the rotation axis with the rotor being screwed, or loosening of the Flip ne female so as to fit in the engagement hole formed in the outer peripheral surface of the externally threaded shaft Deter.

With such a configuration, the structure of the detent means can be simplified.

(8) In any of the above items (5) to (7), the outer diameter is attached to the tip of the rotating shaft in the rear water guide pipe and the opposite end of the rear end of the rotating shaft in the front water guide pipe. A male screw shaft having the same screw pitch is provided, and a convex portion and a concave portion forming a complementary shape are arranged side by side at the opposing ends of the two male screw shafts before and after the shaft and the screw pitch. Then, the convex portion of the front male screw shaft is fitted into the concave portion of the rear male screw shaft, and the convex portion of the rear male screw shaft is fitted into the concave portion of the front male screw shaft, and the central shaft is defined from the outside. Pin holes are provided in the front and rear protrusions facing each other, and the pins are fitted into the pin holes.

According to this structure, externally threaded shaft of the two is not only binding by Flip ne females, coupled by a pin, this double bond means are rigidly coupled.

(9) In any of the above items (5) to (8), the outer diameter is attached to the tip of the rotating shaft in the rear water guide pipe and the opposite end of the rear end of the rotating shaft in the front water guide pipe. A male screw shaft having the same screw pitch is provided, and the amount of protrusion from the base end to the tip is set from the base end to the tip of the convex portion at the center of one of the facing end faces of the two front and rear male screw shafts. A pointed protruding shaft having a protrusion amount larger than that of the above is provided, and a fitting hole into which the protruding shaft can be fitted is provided in the center of the end surface of the male screw shaft facing the protruding shaft .

According to such a configuration, when the opposing end faces of the two male screw shafts are butted, the pointed protruding shafts are inserted into the fitting holes to easily align the two male screw shafts, and then the two male screw shafts are aligned. By rotating one male screw shaft with respect to the other male screw shaft around the central axis, the convex portion and the concave portion can be easily fitted.

According to the present invention, a water turbine unit can be easily formed by adding an arbitrary number of water pipes forming a part of a unit pipe and a rotating shaft integrally with a rotor according to an application and usage conditions. It is possible to provide a water turbine device that can be easily installed at any place in the water channel and that can stably support the rotor.

It is a central longitudinal front view of a part in one Embodiment of the water turbine of this invention. It is an enlarged longitudinal side view of the line II-II of FIG. It is an enlarged longitudinal front view which shows by breaking a part of the joint part of the rotating shaft. It is an enlarged longitudinal front view when the joint part of the rotating shaft is separated. It is a central longitudinal front view which shows the situation at the time of connecting a rotating shaft and a water pipe. It is an exploded perspective view which shows the modification of the connecting means of a rotating shaft. It is a central cross-sectional plan view which shows the state in the process of connecting the rotating shaft shown in FIG.

Hereinafter, an embodiment of the water turbine of the present invention will be described with reference to FIGS. 1 to 5.
This water turbine includes a plurality of cylindrical water pipes 1 facing in the left-right direction that are connected in a straight line and form a part of the water turbine unit A.
Each water pipe 1 has outward flanges 1a at both ends.

A pair of water pipes 1 and 1 adjacent to each other in the longitudinal direction have outward flanges 1a and 1a facing each other with the disc-shaped bearing end plate 2 sandwiched between the outer peripheral portions of the disc-shaped bearing end plate 2. With the bearing end plates 2 sandwiched between the two outward flanges 1a and 1a in contact with the left and right surfaces, the bearing end plates 2 are fastened with a plurality of bolts 3 penetrating them and nuts 4 screwed thereto. Are connected by.

A bearing portion 2a provided with a bearing 5 as a ball bearing or a roller bearing is formed in the central portion of each bearing end plate 2, and a plurality of water passage portions 2b having a fan shape or other shape are formed on the outer peripheral portion thereof. It is formed.
Further, only the left and right surfaces corresponding to the upstream side and the downstream side of each bearing end plate 2 or only one surface (in the bearing end plate 2 arranged on the outermost side of the upstream side and the downstream side of the series of water pipes 1). Is provided with a short fitting portion 2c that fits into the inner hole 1b of the water pipe 1, and a projecting piece 2d is formed inside.

The rotating shaft 6 of the rotor 7 is pivotally supported by the bearing 5 of each bearing end plate 2.
Specifically, the rotating shaft 6 is a spindle 8 integrally provided with a rotor 7 in an intermediate portion, and one or a plurality of additional shafts 9 integrally provided with a rotor 7 in the intermediate portion, the end portions thereof. They are butted against each other and are connected to each other in a straight line by the connecting means 10.

The main shaft 8 is rotatably supported at two locations on the left and right sides of the rotor 7 by bearings 5 and 5 at the centers of a pair of bearing end plates 2 and 2 adjacent to each other, and the additional shaft 9 is provided with one bearing end. The rotor 7 provided on the additional shaft 9 is supported only by the bearing 5 at the center of the plate 2, but the additional shaft 9 is connected to the main shaft 8 or another additional shaft 9 by the connecting means 10. Therefore, a pair of bearing end plates 2 and 2 adjacent to each other are supported by both bearings 5 and 5.

The rotor 7 fixes a plurality of blades 7b to the outer periphery of the hub 7a fixed to the main shaft 8 or the additional shaft 9 with the forward inclined portion 7c at the tip thereof facing upstream (left in FIG. 1). It is formed.

As shown in FIG. 3, the connecting means 10 has the same outer diameter and screw pitch at the opposite ends of the two rotating shafts (spindle 8 and additional shaft 9) 6 and 6 arranged in a straight line. Male screw shafts 11 and 12, respectively, are provided, and the opposite end faces of both male screw shafts 11 and 12 have abutting surfaces 13a and 14a that abut each other in the rotational direction around the central axis L, and a convex portion 13 that complements each other. And the recess 14 are provided so as to face each other so that the threads 11a and 12a formed on the outer peripheral surfaces of the two male screw shafts 11 and 12 are continuous with each other and the convex portion 13 and the recess 14 are fitted to each other. abutted to each other facing end surface of the screw shaft 11, 12, astride the abutting portions of both the male screw shaft 11, there is a that are screwed Flip 1 5 I female.
The inner surface of the Flip ne female 1 5, it is needless to say that the threads 11a of the two male screw shafts 11, 12 and 12a screwed to the female screw are engraved.

In this example, the opposing end faces of the two male screw shafts 11 and 12 have the same shape, each having a convex portion 13 and a concave portion 14.

On one side of the female I Flip 1 5, female screw holes 16 facing the radial direction is provided on the outer peripheral surface of one of the externally threaded shaft 11 and the corresponding engagement holes 17 are provided.
As shown in FIG. 3, in a state where the female screw hole 16 and the engaging hole 17 are aligned with each other, the tip of the set screw 18 screwed into the female screw hole 16 is fitted into the engaging hole 17. Flip I female 1 5 is prevented from rotating in one of the external thread shaft 11.
Further, the male screw shaft 12, by the convex portion 13 and concave portion 14 are fitted to each other, it is prevented from rotating relative to the externally threaded shaft 11, and the threads 12a of the outer periphery Flip ne female 1 5 screwed by being, consequently, Flip I female 1 5 is prevented from rotating in the other of the male screw shaft 12.

The female screw hole 16, the engaging hole 17 and set screw 18, the Flip 1 5 I female, detent means 19 for stopping rotation either one of the male screw shaft 11 is formed, by the stopping means 19, it female Flip 1 5 come off from both externally threaded shaft 11 and 12, it is possible to bond the two male screw shafts 11, 12 are prevented from or solved.

Incidentally, omitted engagement hole 17, the tip of the set screw 18, and is pressed against the outer circumferential surface of the male screw shaft 11, there is also possible to detent of the female I Flip 1 5.

As shown by the broken lines in FIGS. 3 and 4, the opposing ends of the two male screw shafts 11 and 12 have a convex portion 13 and a concave portion 14 that are orthogonal to their central axes L and are fitted to each other. pin hole 20 is provided through the, by fitting the pins 21 into the pin holes 20, two male screw shafts 11 and 12, not only the binding by Flip 1 5 I female, each other by a pin 21 It is connected, and the two front and rear rotating shafts 6 are firmly connected by the double connecting means.

In this water turbine, the water turbine unit A is formed by a plurality of water pipes 1, a plurality of bearing end plates 2, a plurality of rotating shafts 6 integrated with the rotor 7, and connecting means 10 for connecting the rotating shafts 6 and 6 to each other. It is formed and connected in series at an appropriate position of the water pipe 1, but one water pipe 1 at the right end in FIG. 1, a pair of left and right bearing end plates 2 and 2 sandwiching the water pipe 1, and a rotor 7 are formed. The turbine unit A may be formed only with a single rotating shaft 6 integrated with the main shaft 8, that is, the main shaft 8, and may be connected in series to a suitable position of the water pipe 1.

In this water turbine, when water is circulated in the water guide pipe 1 from the left side to the right side in FIG. 1, each rotor 7 is rotated by the water flow at that time, and the rotational force at that time is the main shaft. It is transmitted to a hydropower utilization means (not shown), for example, a turbine (not shown) in a hydroelectric power generation device, and is used as a power source via 8.

Next, the procedure for adding the water pipe 1 and the rotating shaft 6 integrated with the rotor 7 will be described.

The rightmost first bearing end plate 2 is fastened to the right end of the first water guide pipe 1 on the right side shown in FIG. 1, and the right end portion of the spindle 8 is attached to the bearing 5 in the center of the bearing end plate 2. Fitted and pivotally supported, and the left end of the spindle 8 is fitted to the bearing 5 at the center of the second bearing end plate 2, and the left end of the spindle 8 is to the left of the second bearing end plate 2. The second bearing end plate 2 is temporarily fixed to the left end of the first water guide pipe 1 so as to project.

Next, as shown in FIG. 5, the third bearing end plate 2 is temporarily fixed to the left end of the second water pipe 1, and is temporarily connected to the center bearing 5 to the left end of the first additional shaft 9. The first additional shaft 9 is fitted and pivotally supported by the auxiliary shaft 22 so as to project the right end of the first additional shaft 9 to the right from the right end of the second water pipe 1. The vicinity of the right end of the second water pipe 1 is supported so as to be located at the center of the second water pipe 1 by a jig 23 arranged in the right end portion of the second water pipe 1.

At the left end of the first additional shaft 9, a male screw shaft 11 which is the same as the male screw shaft 11 provided at the left end of the main shaft 8 is provided, and at the right end of the auxiliary shaft 22, the end face and the complementary shape of the male screw shaft 11 are provided. An end face forming the same, that is, an end face that is the same as the right end face of the male screw shaft 12 is formed, and by press-fitting the end face to the left end face of the first additional shaft 9, the auxiliary shaft 22 is first added. It is temporarily connected to the left end of the shaft 9.

Next, as shown in FIGS. 4 and 5, either the male screw shaft 11 provided at the left end of the main shaft 8 facing each other and the male screw shaft 12 provided at the right end of the first additional shaft 9 (not shown). examples the advance screwed Flip ne female 1 5 the male screw shaft 11 side), then the first additional shaft 9, a second water conduit 1, the third bearing end plate 2, auxiliary shaft 22, and Osamu The tool 23 is moved to the right as a unit, and the right end surface of the male screw shaft 12 provided at the right end of the first additional shaft 9 is fitted with the convex portion 13 and the concave portion 14 so that the left end of the main shaft 8 is fitted to each other. The pin 21 is fitted into the pin hole 20 in a state where the convex portion 13 and the concave portion 14 are completely fitted to each other by abutting against the left end surface of the male screw shaft 11 provided in the above, and both male screw shafts 11 and 12 are pinned. 21 is connected.

Thereafter, the Flip 1 5 I female is screwed toward the left, Flip I female 1 5, if the female screw hole 16 and the engaging hole 17 reaches a position aligned, the screwing of the female I Flip 1 5 stop, the tip of the setscrew 18 screwed to the female screw hole 16, by fitting the engaging hole 17, is prevented from rotating the Flip 1 5 I females externally threaded shaft 11 of the right.

The connection work between the main shaft 8 and the first additional shaft 9 can be performed by utilizing the gap formed between the first water pipe 1 and the second water pipe 1.

After the connection work between the main shaft 8 and the first additional shaft 9 is completed, the jig 23 is removed from the second water guide pipe 1, and then the second water guide pipe 1 and the third bearing temporarily fixed to the second water guide pipe 1 are provided. The end plate 2 is moved right in parallel with the first additional shaft 9 and the auxiliary shaft 22, and the left end portion of the first additional shaft 9 penetrates the bearing 5 of the third bearing end plate 2 and is left. After projecting toward the direction, the auxiliary shaft 22 is removed from the first additional shaft 9, and the outward flange 1a at the right end of the second water guide pipe 1 comes into contact with the left end surface of the second bearing end plate 2. The outward flange 1a and the outward flange 1a at the left end of the first water guide pipe 1 are connected to each other with a bolt 3 and a nut 4 with a second bearing end plate 2 sandwiched between them.

After that, the third and subsequent water pipes 1 and the second and subsequent additional shafts 9 can be sequentially added in the same manner as described above.

In this embodiment, by incorporating the water turbine unit A as a part of the water pipe 1, not only the water turbine can be easily provided at an arbitrary place of the water pipe 1, but also a part of the existing water pipe 1 is installed. A turbine can be easily installed at any position in the existing water pipe 1 by simply disassembling and connecting the turbine unit A in series with the excised portion, and the rotor 7 The rotor 7 can be stably supported by the pair of bearing end plates 2 that contain the rotor 7, and the pair of bearing end plates 2 that contain the rotor 7 act as a reinforcing material for the water pipe 1. , It is possible to prevent the water pipe 1 from being deformed by an external force.

6 and 7 show a modified example of the rotating shaft connecting means. The same or similar members as those in the above embodiment are designated by the same reference numerals and shown, and detailed description thereof will be omitted.
In the connecting means 30, one of the facing end faces of the two male screw shafts 11 and 12, in this example, a rectangular convex portion 31 facing the radial direction at the center of the end face of the male screw shaft 11 and its tip surface. A pointed protruding shaft 32 protruding from the center of the shaft 32 is provided, and a concave portion 33 forming a complementary shape with the convex portion 31 is provided on the end surface of the other male screw shaft 12, and the inner diameter is the same as the outer diameter of the protruding shaft 32. Or, by making it slightly larger, a fitting hole 34 is provided so that the protruding shaft 32 can be fitted.

The protrusion amount T1 from the base end to the tip of the protrusion 32 is larger than the protrusion amount T2 from the base end to the tip of the convex portion 31.

Therefore, when the opposing end faces of the two male screw shafts 11 and 12 are abutted, the pointed protruding shaft 32 is inserted into the fitting hole 34 to easily align the two male screw shafts 11 and 12. After that, the convex portion 31 and the concave portion 33 can be easily fitted by rotating one male screw shaft 12 with respect to the other male screw shaft 11 around the central axis L.

After the opposite end surfaces of the externally threaded shaft 11, 12 abutted to each other, those similar to the Flip ne female 1 5 in Figure 3, screwing and astride the abutting portions of both the male screw shaft 11, 12 Is the same as that of the first embodiment, and therefore detailed description thereof will be omitted.

Assuming that the relationship between the left end surface of the male screw shaft 11 provided at the left end of the first additional shaft 9 shown in FIG. 5 and the right end surface of the auxiliary shaft 22 is the same as the modified example shown in FIGS. 6 and 7, the auxiliary shaft When the 22 is temporarily connected to the left end of the second additional shaft 9, the possibility that the auxiliary shaft 22 will fall off from the left end of the first additional shaft 9 becomes smaller.

The present invention is not limited to the above-described embodiments and modifications, and can be implemented in the following modified modes without departing from the scope of claims.
(1) Two or more rotors 7 are arranged between a pair of bearing end plates 2 and 2 adjacent to each other.
(2) The connecting means 10 and 30 have other structures such as a known shaft joint.
(3) A bypass path is provided in the original water pipe via a switching valve, a turbine unit A is connected to the water pipe of this bypass path, and the switching valve is switched so that water can be circulated only in the water pipe. , It is distributed via a bypass road, or both.
(4) Instead of the set screw 18, the detent means 19 is a lock nut 35 screwed into any of the male screw shafts 11 and 12, as shown by the two-point chain line in FIGS. 3 and 4, as shown in FIG. as shown, abutted the opposite end faces of the two male screw shafts 11, 12, astride the abutting portions of both the male screw shaft 11, 12, after screwing the Flip 1 5 I female, lock nut so as to be pressed against the 35 to I Flip 1 5 female.
In addition, when used in combination and the set screw 18 and the lock nut 35, it is possible that the Flip 1 5 ne female, to detent more reliably.

1 Water guide pipe 1a Outward flange 1b Inner hole 2 Bearing end plate 2a Bearing part 2b Water flow part 2c Fitting part 2d Projection piece 3 Bolt 4 Nut 5 Bearing 6 Rotating shaft 7 Rotor 7a Hub 7b Blade 7c Forward inclined part 8 Spindle 9 Additional shaft 10 Connecting means 11, 12 Male screw shaft 11a, 12a Thread 13 Convex 13a Contact surface 14 Recess 14a Contact surface 15 Female screw 16 Female screw hole 17 Engagement hole 18 Set screw 19 Detent means 20 Pin hole 21 Pin 22 Auxiliary shaft 23 Jig 30 Connecting means 31 Convex part 32 Protruding shaft 33 Concave 34 Fitting hole A Water wheel unit L Central shaft T1, T2 Protrusion amount

Claims (9)

In a water wheel in which a rotating shaft provided with a rotor is arranged via front and rear bearing end plates in each of the long-connected water guide pipes and the rotation of the rotor is used as power, the bearing end plate is used. A bearing is arranged in the center thereof, and a water passage portion is formed around the bearing. Each of the water guide pipes has an outward flange formed at the front and rear ends, and the front flange of the rear water guide pipe connected in the front and rear. The bearing end plate is held by the front flange of the water guide pipe to connect the front and rear water guide pipes, and the rotation axis of each of the front and rear water guide pipes at the time of connection is rotation in the rear water guide pipe. The tip of the shaft is projected forward of the bearing end plate at the front end to connect with the rear end of the rotating shaft in the front water guiding pipe, and the tip of the rotating shaft in the front water guiding pipe is supported at the front end. A water wheel device characterized by projecting forward of a bearing end plate of the bearing end plate and connecting another water guide pipe and a rotating shaft inside the water guide pipe in front of the water guide pipe in the front portion thereof in the same process. A rotary shaft provided with a rotor is supported in the water guide pipe by a bearing of a bearing end plate, and the front and rear water guide pipes are connected in series by sandwiching the bearing end plate, and the front and rear rotating shafts are connected in series by a connecting means. is, at least one rotor, one water guide pipe so as to be positioned, waterwheel apparatus according to claim 1, characterized in that the combination formed a water turbine unit can be connected in succession. Claim 1 is characterized in that outward flanges are provided at both ends in the longitudinal direction of the water pipe, and the outer peripheral portion of the bearing end plate is held and connected between the front and rear flanges of the water pipe to be connected to the front and rear. Or the water turbine device according to 2. On the outer peripheral surface of the bearing end plate, fitting portions capable of fitting into the inner holes at the end portions of the water pipe are provided on the front surface and the rear surface so that protrusions are formed at the central portions of the front surface and the rear surface. Any of claims 1 to 3, wherein the front and rear fitting portions are fitted into the inner holes of the end portions of the front and rear water pipes, and the bearing end plates are held and connected by flanges in the front and rear water pipes. Water turbine device described in the bearing. A male screw shaft having the same outer diameter and screw pitch is provided at the tip of the rotary shaft in the rear water guide pipe and the opposite end of the rear end of the rotary shaft in the front water guide pipe, respectively. The facing end faces of the shafts are provided with contact surfaces that come into contact with each other in the direction of rotation around the central shaft, and the convex portions and the concave portions that form complementary shapes are provided to face each other, and are formed on the outer peripheral surfaces of the two male screw shafts. The threads are continuous with each other, and the convex portion and the concave portion are fitted to each other, and the opposite end faces of the two male screw shafts are butted against each other, and the butt portions of the two male screw shafts are connected to each other. The water wheel device according to any one of claims 1 to 4, wherein the axle is screwed. And the tip portion of the rotation shaft of the rear portion of the water guide pipe, the opposite ends of the rear end portion of the rotary shaft of the front portion of the water guide pipe is provided externally threaded shaft which is the outer diameter and screw pitch identical to each post front Ni Flip it female that match threaded so as to connect the contact end face of the externally threaded shaft of the water wheel apparatus according to claim 5, characterized in that a detent means for the detent from screwed the externally threaded shaft .. The female screw hole for set screw facing radially formed through the inside and outside on the Flip ne female, the tip of the set screw screwed into the female screw hole, the Flip I female but with the rotor being screwed claim, characterized in that to suppress the pressure contact with the outer peripheral surface or loosening of the Flip ne female so as to fit in the engagement hole formed in the outer peripheral surface of the externally threaded shaft of the male screw shaft in the rotation axis 6 water wheel device according to. Male screw shafts having the same outer diameter and screw pitch are provided at the tip of the rotary shaft in the rear water guide pipe and at the opposite end of the rear end of the rotary shaft in the front water guide pipe, respectively. At the opposite ends of the two male screw shafts , a convex portion and a concave portion forming a complementary shape are arranged side by side with the central axis as a boundary, and the convex portion of the front male screw shaft is the rear male screw shaft. The convex portion of the rear male screw shaft is fitted into the concave portion of the front male screw shaft, and a pin hole is provided from the outside through the front and rear convex portions facing each other with the central axis as a boundary. The water wheel device according to any one of claims 5 to 7, wherein a pin is fitted in the pin hole. Male screw shafts having the same outer diameter and screw pitch are provided at the tip of the rotary shaft in the rear water guide pipe and at the opposite end of the rear end of the rotary shaft in the front water guide pipe, respectively. At the center of one of the opposing end faces of the two male screw shafts, a pointed protruding shaft having a protrusion amount from the base end to the tip larger than the protrusion amount from the base end to the tip of the convex portion is provided. The water turbine device according to any one of claims 5 to 8, wherein a fitting hole into which the protruding shaft can be fitted is provided at the center of the end surface of the male screw shaft facing the male screw shaft .

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