JP2009254577A - Ferris wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Ferris wheel with a center shaft structure which is lightweight, and can be easily and quickly manufactured and installed. <P>SOLUTION: The Ferris wheel has the center shaft structure 1 horizontally fixed to the center position of a turning wheel K having gondolas arranged along the outer periphery and having both end sections supported on front and rear fixing support parts 30, 30 by bearings 31, 31. The center shaft structure comprises short shafts 10, 10 on both ends and a large diameter tube member 11 directly or indirectly connecting the two short shafts 10, 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a ferris wheel.

Conventionally, the central shaft structure for pivotally supporting a rotating wheel with a large number of riders (gondola, cabin, etc.) arranged along the outer periphery to a fixed support leg (part) is long in the case of a large Ferris wheel. Is a forged central shaft (consisting of a solid shaft or a hollow shaft) of several meters (see, for example, Patent Document 1 and Patent Document 2).
Conventionally, in order to pivotally support a large rotating wheel that is heavy and receives a strong wind pressure in a strong wind, it has been considered uneasy in terms of strength and durability to apply welding or bolt connection to the central shaft. Therefore, a shaft member made of a single forged product has been conventionally used without any welding or bolt connection (rivet connection).
JP 2005-21461 A Utility model registration No. 2516333

However, the number of factories (forging facilities) that can produce one forged product with an outer diameter exceeding 300 millimeters and a length of several meters is limited, the delivery time is extremely long, and in reality it is difficult to deliver. ing.
In addition, the problem of excessive weight, the problem of significant increase in manufacturing costs, the problem of subsequent machining increases, and transportation from the manufacturing factory to the amusement park and other sites are restricting traffic. There was a problem that it was difficult to receive.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a ferris wheel having a lightweight (and strength equivalent to the conventional level) central shaft structure that can be easily manufactured in a relatively large number of factories (forging facilities) with a short delivery time. To do. It is another object of the present invention to provide a ferris wheel having a central shaft structure that can reduce manufacturing costs, has fewer machining parts, and is easy to transport.

  The present invention is fixed horizontally at the center position of a rotating wheel in which a large number of riding rods are arranged along the outer periphery, and the center is arranged in the form of a doubly supported beam via bearings on the front and rear fixed support portions. A ferris wheel including a shaft structure, the central shaft structure having a short shaft at both ends, and a large-diameter tubular member that directly or indirectly connects the short shafts.

  The short shaft is made of forging, and is a hollow shaft through which a shaft center hole through which electric wiring of a slip ring provided on the outer end side is introduced to the rotating wheel side is provided.

  The short shaft is made of forging, and is a hollow shaft through which a shaft hole that introduces the electrical wiring of a slip ring provided on the outer end side thereof to the rotating wheel side, and the electrical wiring is The tubular member is inserted into the tubular member, and the tubular member is provided with a through-hole penetrating the circumferential wall from the inside to the outer peripheral side.

  The tubular member is formed by connecting and integrating a plurality of cylindrical bodies in the longitudinal direction by bolt / nut coupling.

  The short shaft and the tubular member are connected to each other via a boss member that is externally fixed to the inner end of the short shaft. The short axis may be made of solid forging.

  According to the ferris wheel of the present invention, the central shaft structure can be reduced in weight. The production of the central shaft structure can be facilitated. The center shaft structure can be transported and installed easily and quickly, and the cost can be reduced.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIG. 1 is a simplified side view showing a first embodiment of a ferris wheel according to the present invention, and FIG.

  In FIG. 1, the ferris wheel of the present invention has a large number of riding boards G (also referred to as gondola and cabin) on which passengers (viewers) can get on and off, and the riding board G is arranged along the outer periphery. The circular rotary wheel K is provided. The rotating wheel K includes a central shaft structure 1 that is fixed horizontally at the center position of the rotating wheel K. In the present invention, the carriage G is defined as “more than 20” means that there are 20 or more, and the “large” rotating wheel K is defined as that having a diameter of 40 meters or more. To do. The rotating wheel K is provided so as to be able to provide a passenger with a view from a high place by rotating the riding rod G in the circumferential direction of the rotating wheel K. The rotating wheel K is formed by concentrically arranging two circular frames k and k and connecting them in the direction of the axis L, and has a space between the two frames k and k. It is a disk-shaped frame structure.

The central shaft structure 1 is disposed in a doubly-supported manner via bearings 31 and 31 such as bearings on fixed support portions 30 and 30 at the front and rear positions of the rotating wheel K, and is rotatably supported. The fixed support portions 30 and 30 correspond to upper end portions of a plurality of support leg members S provided so as to protrude upward from the ground or a building. It is provided near the center position of the rotating wheel K (near the axis L). It can be said that the central shaft structure 1 supports the rotating wheel K in the form of a double-supported beam.
The front-rear direction is the direction before and after viewed from the direction of the axis L.

  In FIG. 2, the central shaft structure 1 includes short shafts 10 and 10 at both ends, a boss member 12 to which the short shaft 10 is attached, and a tubular member 11 that connects the boss members 12 and 12. Yes. In other words, the two short shafts 10 and 10 are indirectly connected by the large-diameter tubular member 11 (via the boss member 12).

  The short shaft 10 is a forged product, and is inserted into the boss member 12 from the inner side so that a part of the short shaft 10 protrudes outward from the rotating wheel K in the front-rear direction. Has been. That is, a part of both the short shafts 10 and 10 protrudes outward from the one (front) side frame k and the other (rear) side frame k concentrically to the axis L.

The short shaft 10 is a hollow shaft having an axial hole 10a penetrating in the axial center L direction (center). The axial hole 10a communicates with the interior 11A of the tubular member 11.
Further, the short shaft 10 regulates the falling off from the front and rear inner side of the rotating wheel K to the outer side, and has an outer flange portion 10b having a hole portion through which a bolt member for fixing to the boss member 12 can be inserted, An insertion portion 10c that is inserted into the insertion hole 12a of the boss member 12 fixed to the rotating wheel K, and a support portion 10d that protrudes outward of the rotating wheel K via the boss member 12 and is externally fitted to the bearing 31. And have.

The end face of the outer end of the short shaft 10 is attached with a slip ring 20 serving as a relay point for supplying electric power for a voice speaker, an air conditioner or the like to the riding rod G, the rotating wheel K or the like.
The shaft center hole 10a is inserted with an electrical wiring 21 on the supply side (supply side) of the slip ring 20 and the like, and introduces the electrical wiring 21 to the rotating wheel K side.
The outer flange portion 10b abuts on the boss member 12 to perform positioning in the axial center L direction, and is fixed to the boss member 12 with a bolt member.
The insertion portion 10c is fitted into the insertion hole 12a of the boss member 12 fixed to the rotating wheel K.
A bearing 31 such as a bearing is rotatably fitted to the support portion 10d.
In other words, the boss member 12 is fitted and fixed to the insertion portion 10c at the inner end of the short shaft 10, and the bearing 31 is rotatably fitted to the support portion 10d at the outer end. The bearing 31 is attached to the fixed support portion 30 via a bearing base. That is, the short shaft 10 is rotatably supported by the fixed support portion 30 via the bearing 31.

  The short axis 10 is formed sufficiently shorter than the entire length of the central shaft structure 1. That is, in the present invention, the “short” of the short axis 10 is defined as being formed (set) with a length dimension t of 25% or less of the overall length dimension T of the central shaft structure 1. To do. Further, the support portion diameter dimension d of the support portion 10d is formed to be smaller than the diameter dimension of the insertion portion 10c. Further, the support portion diameter dimension d is formed (set) to 50% or less of the outer diameter dimension D of the tubular member 11. Moreover, it has the intensity | strength which can receive the load of the rotating wheel K fully.

The boss member 12 is integrally fixed to the rotating wheel K. In other words, the rotating wheel K is fixed to the front frame body k and the rear frame k. It has a cylindrical boss portion 12A disposed coaxially with the axis L of the rotating wheel K, and a connecting portion 12B projecting radially outward from the boss portion 12A.
The boss portion 12A has an insertion hole 12a that is concentric with the shaft center L in a state of being fixed to the rotating wheel K. The short shaft 10 is inserted into the insertion hole 12a.
The connecting portion 12B is formed so as to be fixed to the rotating wheel K (frame body k). Further, the tubular member 11 is formed so as to be fixed. The tubular member 11 has a screw hole that can be bolted, or a through-hole that can be bolted and nut-coupled.

  The tubular member 11 is disposed concentrically with the axis L. It is disposed on the front and rear inner sides of the rotating wheel K. In other words, it is disposed between one (front) side frame k and the other (back) side frame k. Furthermore, in other words, it is disposed between the boss member 12 fixed to the front side frame body k and the boss member 12 fixed to the rear side frame body k, and both ends thereof are disposed on both sides of the boss members 12 and 12. It is stuck to. That is, the tubular member 11 and the short shaft 10 are connected to each other via the boss member 12 that is externally fitted and fixed to the inner end (insertion portion 10c) of the short shaft 10.

The tubular member 11 has an inner portion 11 </ b> A communicating with the axial hole 10 a of the short shaft 10. A flange portion 11B that makes surface contact with the boss member 12 is provided at both ends. Moreover, it has the circumferential wall 11D used as the thin thickness of the dimension of 1/10 or less with respect to the outer diameter dimension D.
An electrical wiring 21 inserted through the axial hole 10a is introduced into the interior 11A.
A through-hole through which a bolt member for coupling to the boss member 12 is inserted is formed in the flange portion 11B. That is, the tubular member 11 is fixed to the boss member 12. In other words, the short shafts 10 on both sides are connected via the boss members 12 on both sides.
A through-hole 11d that communicates from the inner part 11A to the outer peripheral side is provided in the circumferential wall 11D. In the present invention, the “large diameter” of the tubular member 11 is defined as the outer diameter dimension D of the tubular member 11 being twice or more the support part diameter dimension d of the short shaft 10.

  The tubular member 11 is formed by connecting and integrating three cylinders 11a, 11a, 11a in the longitudinal direction (axial center L direction) by bolt / nut coupling at two coupling portions 11C. The length of the cylindrical body 11a in the longitudinal direction is formed (set) to a length dimension equal to or less than half (1/2) of the entire length of the tubular member 11. That is, it is formed in a short cylindrical shape.

FIG. 3 shows an enlarged cross-sectional view of a main part for explaining a state before the coupling portion 11C is coupled.
The coupling portion 11C is provided with a receiving flange portion 40 having an L-shaped cross-sectional view on the end surface side of one cylindrical body 11a connected to the other cylindrical body 11a. Then, the other cylinder body 11a is concentrically arranged with respect to the one cylinder body 11a on the end surface side of the other cylinder body 11a connected to the one cylinder body 11a and locked to the receiving flange portion 40. An engagement flange portion 41 is provided. The receiving flange portion 40 and the engaging flange portion 41 have connecting through-holes through which the cylinders 11a and 11a to be connected in an engaged state can be concentric and through which the connecting bolt member 42 can be inserted.
That is, the connecting portion 11C is configured such that the engaging flange portion 41 of the other cylinder 11a is fitted to the receiving flange portion 40 of the one cylinder 11a, and the cylinders 11a are arranged concentrically with each other. The coupling nut member 43 is screwed and coupled (coupled) to the coupling bolt member 42 inserted through the coupling through hole which is concentric with the portion 40 and the engagement flange portion 41.

The use method (action) of the ferris wheel of the present invention described above will be described.
When the center shaft structure 1 is manufactured (as compared with the case where the center shaft structure 1 is manufactured with one forged shaft), the central portion is the tubular member 11 and only the both ends are forged short shafts 10. , 10 for easy forging. Further, the axial hole 10a, the insertion portion 10c, the support portion 10d and the like that require machining are easily machined. The tubular member 11 is manufactured by a plurality of short cylinders 11a, 11a, 11a before being connected and integrated. Since it is less than half the weight and size (length) of the connected and integrated tubular member 11, it is easily manufactured. The central shaft structure 1 is easily manufactured.

  When transporting the central shaft structure 1, the short shaft 10 is sufficiently short and lightweight (compared to the case where the central shaft structure 1 is manufactured with a single forged shaft). It is transported smoothly without being affected by. Since the cylindrical body 11a is smaller and lighter than before being connected and integrated into the tubular member 11, the cylindrical body 11a is smoothly transported without being affected by traffic regulations or vehicle regulations. The central shaft structure 1 is divided and transported smoothly.

During assembly and construction, the boss member 12 is fixed concentrically to the axis L of the rotating wheel K through the insertion hole 12a. The short shaft 10 is inserted (inserted or press-fitted) into the insertion hole 12 a of the boss member 12.
The short shaft 10 abuts the outer flange portion 10 b on the boss portion 12 A of the boss member 12. The outer flange portion 10b is positioned by regulating the protruding length (protrusion allowance). Both the short shafts 10 project from the axis L in the front-rear direction of the rotating wheel K in a concentric manner. A bearing 31 such as a self-aligning roller bearing is externally fitted to the protruding support portion 10d of the short shaft 10. It is supported by the fixed support part 30 via a bearing stand. The fixed support part 30 supports the short shaft 10 in a freely rotatable manner. That is, the rotating wheel K is rotatably supported.
The three cylinders 11a, 11a, and 11a are concentrically arranged by the receiving flange portion 40 and the engaging flange portion 41, and are connected and integrated by a coupling portion 11C by bolt / nut connection. 11
The tubular member 11 is disposed concentrically with the axis L, and the flange portion 11B is fixed to the connecting portion 12B of the boss member 12 using a bolt member. The tubular member 11 indirectly connects the short shafts 10 and 10 via the boss member 12.

  That is, the central shaft structure 1 can be quickly and easily assembled to the rotary shaft K. The rotating wheel K is rotatably supported in the form of a double-supported beam via bearings 31 on the front and rear fixed support portions 30 and 30.

  Further, when the slip ring 20 is provided on the outer end face side of the short shaft 10 during the wiring work of the electric wiring 21, the shaft center hole 10a introduces (guides) the electric wiring 21 to the rotating wheel K side. Since the axial hole 10a communicates with the inside 11A of the tubular member 11 inside the rotating wheel K, the electric wiring 21 introduced to the rotating wheel K side is guided to the inside 11A of the tubular member 11. The electrical wiring 21 guided to the inside 11A of the tubular member 11 is inserted through the through hole 11d of the tubular member 11 and is guided to the outer peripheral surface side of the tubular member 11. That is, the shaft hole 10a of the short shaft 10, the inside 11A of the tubular member 11 and the through hole 11d allow the electric wiring 21 to be drawn from the outer side to the inner side of the rotating wheel K. The electric wiring 21 is introduced into the inside (inward) of the rotating wheel K that rotates. The electric power (electricity) from the electric power source outside the rotating wheel K can be supplied to the car G and the like.

  After the construction, the insertion portion 10c of the short shaft 10 receives the load from the rotating wheel K. The support portion 10 d of the short shaft 10 transmits the load received by the short shaft 10 to the fixed support portion 30 via the bearing 31. The fixed support portion 30 supports a load from the rotating wheel K. Further, since the distance between the inner end (insertion portion 10c) where the load is applied and the outer end (support portion 10d) to be supported is short, the influence of the bending moment is reduced.

Further, as shown in FIG. 1, when the wind W is blown from the direction indicated by the arrow on one side of the rotating wheel K, the rotating wheel K receives a force that causes the wind W to tilt to the other side. .
Then, a force such as a bending moment diagram shown in FIG. 4 is applied to the central shaft structure 1.
At this time, the short shaft 10 on one side has an upward force (tensile force) that pulls upward, which is a part of the force that the rotating wheel K tends to tilt to the other, and a downward load (self-weight) of the rotating wheel K. Receive an upward force P ₁ consisting of The short shaft 10 on the other side receives a large downward load force P ₂ composed of a force (pushing force) pushed down by the wind W (see FIG. 1) and a downward load (self-weight) of the rotating wheel K. .
That is, depending on the direction of the wind W (whether it blows from one side or the other side), the short shaft 10 of the central shaft structure 1 has a pressing force generated by the wind W (see FIG. 1) and the rotating wheel K. It receives a large load force P ₂ consisting of its own weight. The large load force P ₂ is generated on either one of the short axes 10 and 10 depending on the direction of the wind W. Accordingly, the forged short shafts 10 and 10 receive the sections E ₁ and E ₁ on both sides where a large load force P ₂ may be generated. Then, the tubular member 11 receives the central section E ₂ which is not significantly affected by the wind W and has a small load.

That is, even when the rotating wheel K is inclined by the wind W or the like and an irregular load force is applied to the central shaft structure 1, the sections E ₁ and E ₂ on both sides to which the load force P ₂ is applied. _{Since 1} is a short shaft 10 which is a forged shaft shape resistant to repeated loads and the like, the load force from the rotating wheel K is reliably received. Further, since the load received by the tubular member 11 on the front and rear and inner sides of the rotating wheel K is smaller than the load applied to the short shaft 10, even the thin tubular member 11 receives the load sufficiently. Thus, it can be said that the structure is extremely rational in terms of dynamics.
Further, by providing the tubular member 11 with a large diameter, even if the through hole 11a is formed in the radial direction in the circumferential wall 11D, the possibility of breakage (breakage / crack) due to stress concentration is reduced.
The central shaft structure 1 has a light and thin tubular member 11 at the center, and has strong short shafts 10 and 10 at both ends, so that it receives a sufficient load from the rotating wheel K.

In the present invention, the design can be changed, and the shape of the ferris wheel is not limited to the shape shown in FIG. 1. For example, one or both of the front and rear fixed support portions 30 can be used in a building such as a commercial facility or a building. It may be provided. Further, the surface on which the support leg member S is installed is free on the ground, the rooftop of a building, the foundation, or the like.
Further, the tubular member 11 may be directly connected to the inner end (the outer flange portion 10b) of the short shaft 10. Moreover, the tubular member 11 is not limited to three divisions as described above, and may be provided in two divisions or four or more divisions. Further, the diameter dimension of the insertion part 10c (inner end side) of the short shaft 10 and the support part diameter dimension d of the support part 10d (outer end side) may be set to the same dimension. Further, the short axis 10 may be solid.

  As described above, according to the present invention, a large number of riding rods G are fixed horizontally to the center position of the rotating wheel K provided along the outer periphery, and the bearings 31, 31 are attached to the front and rear fixed support portions 30, 30. The central shaft structure 1 has a short shaft 10 and 10 at both ends, and both the short shafts 10 and 10 are directly or indirectly provided. Since the large-diameter tubular member 11 is connected to the central shaft structure 1, the central shaft structure 1 can be manufactured in a light weight. In addition, the short shaft 10 and the tubular member 11 that can be easily processed can be divided and manufactured, and the cost can be reduced. By shortening the shaft that requires high-precision machining (by using the short shaft 10), the delivery time can be shortened and the manufacturing cost can be reduced. Since the forged part has only the short shafts 10 and 10, it can be easily manufactured. The central shaft structure 1 can be divided and transported. That is, it can be transported quickly and easily without being affected by traffic restrictions. Construction can be performed smoothly. The central shaft structure 1 can be provided integrally with the rotating wheel K, and the rotating shaft K can be supported more reliably by rotating the central shaft structure 1 together with the rotating wheel K. Since the short axis 10 is short, it is easy to drill through the center.

Further, the short shaft 10 is made of forging and is a hollow shaft through which a shaft hole 10a for introducing the electrical wiring 21 of the slip ring 20 provided on the outer end side thereof to the rotating wheel K side is provided. The short shaft 10 can be reduced in weight. The wiring path of the electric wiring 21 can be integrally formed on the short shaft 10, and the equipment can be simplified without providing a member for introducing the electric wiring 21 to the rotating wheel K side. The electric wiring 21 can be easily introduced into the front and rear and inner sides of the rotating wheel K that rotates. The electrical wiring 21 can be protected by the short shaft 10.
Further, since the short shaft 10 is short, the electric wiring 21 can be easily inserted into the axial hole 10a. The short shaft center hole 10a enables the slip ring to be disposed on the end surface of the short shaft 10 on the outer end side. Since no wiring hole is formed in the vicinity of the rotating wheel K, the slip ring 20 does not need to be brought close to the rotating wheel K, and the fixed support portion 30 can be brought closer to the rotating wheel K. The insertion portion 10c of the short shaft 10 that receives the force from the rotating wheel K and the support portion 10d that supports the rotating wheel K can be brought close to each other so that the bending of the short shaft 10 can be reduced and the influence of the bending moment can be reduced. The rotating wheel K can be reliably held rotatably.

  The short shaft 10 is a forged shaft that is a hollow shaft through which a shaft center hole 10a for introducing the electrical wiring 21 of the slip ring 20 provided on the outer end side thereof to the rotating wheel K side is provided. The wiring 21 is inserted into the inside 11A of the tubular member 11, and the tubular member 11 is provided with a through hole 11d through the circumferential wall 11D for guiding the electrical wiring 21 from the inside 11A to the outer peripheral side. The electrical wiring 21 can be introduced into the inside (inward) of the rotating wheel K. It is not necessary to provide a separate passage or cover for the electric wiring 21, and can be easily constructed. The electrical wiring 21 can be protected by the short shaft 10 and the tubular member 11.

  Further, since the tubular member 11 is formed by connecting and integrating a plurality of cylinders 11a, 11a, and 11a with bolts and nuts in the longitudinal direction, the tubular member 11 can be smoothly transported without being affected by traffic regulations or vehicle regulations. Easy and fast to manufacture. Can be manufactured at low cost. Can be connected and integrated easily by bolt and nut connection. Further, the central shaft structure 1 having various lengths can be formed by combining the cylindrical bodies 11a having various lengths.

  Further, since the short shaft 10 and the tubular member 11 are connected to each other via a boss member 12 that is externally fitted and fixed to the inner end of the short shaft 10, the distortion and twist of the rotating wheel K can be corrected. The strength of the rotating wheel K in the axis L direction can be improved. The tubular member 11 can have a large diameter.

It is a simplified side view which shows 1st Embodiment of the ferris wheel of this invention. It is a principal part cross-sectional side view which shows 1st Embodiment of the ferris wheel of this invention. It is a principal part expanded sectional view explaining a tubular member. It is an operation explanatory view.

Explanation of symbols

1 Central axis structure
10 short axis
10a Shaft hole
11 Tubular member
11A inside
11a cylinder
11D circumferential wall
11d through hole
12 Boss member
20 Slip ring
21 Electrical wiring
30 Fixed support
31 Bearing G Noritsu K Rotating wheel

Claims (6)

  A large number of riding rods (G) are fixed horizontally to the center position of the rotating wheel (K) disposed along the outer periphery, and the bearings (31) (31) are fixed to the front and rear fixed support portions (30) (30). ), And the central shaft structure (1) has short axes (10) and (10) at both ends, and the central shaft structure (1) A ferris wheel comprising a large-diameter tubular member (11) for directly or indirectly connecting both short shafts (10) and (10).   The short shaft (10) is made of forging, and a shaft hole (10a) for introducing the electrical wiring (21) of the slip ring (20) provided on the outer end side to the rotating wheel (K) side. The ferris wheel according to claim 1, wherein the ferris wheel is a hollow shaft having a through hole.   The short shaft (10) is made of forging, and a shaft hole (10a) for introducing the electrical wiring (21) of the slip ring (20) provided on the outer end side to the rotating wheel (K) side. The electric wiring (21) is inserted into the interior (11A) of the tubular member (11), and the tubular member (11) has the circumferential wall (11D) connected to the circumferential wall (11D). The ferris wheel according to claim 1, further comprising a through hole (11d) through which the electrical wiring (21) is led from the inside (11A) to the outer peripheral side.   The ferris wheel according to claim 1, 2 or 3, wherein the tubular member (11) has a plurality of cylindrical bodies (11a) (11a) (11a) connected and integrated in a longitudinal direction by bolt-nut coupling.   The short shaft (10) and the tubular member (11) are connected to each other via a boss member (12) externally fitted and fixed to the inner end of the short shaft (10). , 3 or 4 ferris wheel.   The ferris wheel according to claim 1, wherein the short shaft (10) is made of solid forging.

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