JP7325061B2 - turntable device - Google Patents

Description

The present invention relates to a turntable device.

When it is impossible or difficult to change the direction of the vehicle itself due to external constraints, etc., a turntable device is applied to change the traveling direction of the vehicle by placing the vehicle on it. By doing so, various vehicle running modes are formed.
For example, in tunnel construction, if the inner space of the tunnel does not have sufficient dimensions to change the direction of the transport vehicle of materials and equipment, or the running performance of the vehicle in the limited inner space of the tunnel A turntable device was installed in the tunnel for the purpose of securing the There is a transportation mode in which the vehicle is shunted to the side of the mine mouth.
Also, to give another example, when transporting materials such as segments and various equipment to a tunnel shaft or the like through a relatively narrow transport path, a turntable device is installed at a position in front of the entrance to this transport path. Then, the vehicle placed on the turntable device is turned 180 degrees in the direction of travel, and after the vehicle enters the conveying path by back traveling and delivers the materials and equipment on the loading platform near the tunnel shaft, the conveying path There is a running mode that advances and retreats.

Here, Patent Document 1 discloses a turntable for a vehicle that enables a simple mechanism for transmitting the rotation of the drive wheels to the turntable when changing the direction of the vehicle by rotating the turntable. Proposed. The turntable includes a base placed on the ground, a rotating disk supported rotatably about a rotating shaft erected on the supporting base, rotating means for rotating the rotating disk, and a vehicle. Rotation transmitting means for transmitting the rotation of one of the pair of left and right driving wheels to the rotating means, rotation blocking means for blocking the rotation of the other driving wheel, and a vehicle having a turntable. and a ramp for entering and exiting.

Japanese Unexamined Patent Application Publication No. 2012-96728

According to the turntable described in Patent Literature 1, it is possible to provide a vehicle turntable that utilizes the drive torque of the drive wheels, which is simpler in configuration than conventional turntables. By the way, many conventional turntable devices, such as the turntable described in Patent Document 1, have a three-point support structure. This three-point support structure is a structure in which the turntable is supported at three points: the wheels on the outside of the turntable at diagonal positions, and the central fulcrum, which is positioned between these wheels and serves as the center of rotation of the turntable. It's about.
In such a turntable device having a three-point support structure, when a loaded vehicle or the like is mounted on the turntable, the center of gravity of the vehicle often does not coincide with the center of rotation due to the state of the loaded vehicle or the like. In this case, the weight of the vehicle concentrates on the outer fulcrum closer to the center of gravity and the central fulcrum. The wheels of the turntable are driven by a driving means, and the turntable can be rotated by the frictional force between the wheels and the rails below them, but forms an outer fulcrum on which the weight of the vehicle does not or hardly acts. Sufficient frictional force cannot be obtained between the wheel and the rail under it, and the wheel may idle and drive may be hindered.
In addition, it is possible to apply a high-friction wheel in order to enable the turntable to rotate only by the frictional force between one wheel and the rail even when the other wheel is idling. If the frictional force between the rail and the rail is reduced, it becomes difficult to rotate the turntable.

Therefore, the driver of the vehicle finely adjusts the mounting position of the vehicle on the turntable, which may change depending on the load, by slightly moving the vehicle so that the center of gravity of the vehicle coincides with the central fulcrum (rotation center) of the turntable. After fine adjustment, drive the turntable to check whether it can rotate. If the turntable does not rotate smoothly, finely adjust the mounting position again and check whether the turntable can rotate. It is a labor intensive and time consuming operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a turntable device capable of realizing smooth rotation of the turntable regardless of the position of the vehicle on the turntable.

In order to achieve the above object, one aspect of the turntable device according to the present invention is
A turntable device that changes the traveling direction of a vehicle by rotating it while the vehicle is placed thereon,
two split tables forming a turntable;
a rotating shaft member that rotatably connects one ends of the two divided tables;
Wheels and drive means for rotating the wheels, which are attached to the lower surfaces of the other ends of the two divided tables;
and a rotary support disposed at the center of the turntable in the longitudinal direction and rotatably supporting the rotary shaft member and the turntable.

According to this aspect, the turntable is formed by rotatably connecting one ends of the two divided tables via the rotating shaft member, and the wheels are provided on the lower surfaces of the other ends of the two divided tables. As a result, the turntable is formed by the two divided tables of the two-point support structure, and the weight of the vehicle, which is proportionally divided according to the position of the center of gravity of the vehicle placed on the turntable, is divided between the two. It can be supported by a table. That is, by pin-joining one ends of the two divided tables via a rotating shaft member, rotation of one end of each divided table is allowed, and as a result, the turntable can be supported by the two divided tables having a two-point support structure. will be configured. As a result, the proportionally divided weight of the vehicle, which is proportionally divided between the wheels and the rotary supports that support each divided table, is loaded on each divided table. There is no problem that one wheel idles depending on the position and smooth rotation of the turntable is hindered.
In addition, since the turntable that constitutes the turntable device is divided into two divided tables, when the turntable device is installed, the transportability when transporting the turntable and other constituent members and the assembly during installation becomes better.

There are various shapes of the turntable in plan view, such as a disc shape in plan view, a rectangular shape in plan view having a width corresponding to the vehicle on which it is to be placed (for example, a width slightly wider than the width of the vehicle), and a flat surface. For example, a substantially rectangular shape having an arc having a diameter equal to the longitudinal length of the viewing rectangle at the end side may be used. In the disk-shaped turntable in plan view, two semi-disk-shaped split tables are rotatably connected at their straight ends. On the other hand, in the case of a rectangular or substantially rectangular turntable in plan view, two rectangular or substantially rectangular divided tables each having a half length in the longitudinal direction of the rectangular or substantially rectangular shape are arranged so that one ends of both linear shapes are rotatable. will be connected.
In this aspect, the "longitudinal direction of the turntable" means directions along various diameters passing through the center of the turntable when the turntable is disc-shaped in plan view, and when the turntable is rectangular or substantially rectangular in plan view. It is the direction along the long side of the rectangle.

A rotary support disposed in the center of the turntable in the longitudinal direction is fixed to the ground, a dirt floor concrete constructed on the ground, a foundation made of reinforced concrete, or the like. The rotary support includes a fixed part fixed to a reinforced concrete foundation or the like, and a rotating part that rotates with respect to the fixed part. A turntable is rotatably supported with respect to the rotating portion.
In addition, a motor or the like can be applied as a driving means for rotating the wheels, and the drive shaft of the motor and the rotation shaft of the wheels transmit the driving force of the motor to the wheels, for example, via gears or via sprockets and chains. freely connected.
In addition, the turntable device of this aspect preferably has a ramp for allowing a vehicle to enter and leave the turntable so that it can be freely attached to and detached from the turntable.

In another aspect of the turntable device according to the present invention, a male member protrudes from the one end of one of the divided tables, and the male member is provided with a first through hole through which the rotating shaft member is inserted. cage,
A female member protrudes from the one end of the other divided table, and the female member is provided with a second through hole through which the rotating shaft member is inserted,
The male member is fitted into the female member, the first through-hole and the second through-hole are aligned to form a communicating hole, and the rotating shaft member is inserted through the communicating hole, whereby the A turntable is formed.

According to this aspect, the first through hole provided in the male member protruding from one end of one of the divided tables (an engaging hole (hooking hole) having a downward opening and having a U shape in plan view, a circular hole, etc.) and the other A second through hole provided in the female member protruding from one end of the divided table (a U-shaped engaging hole (hooking hole) having a downward opening, a circular hole, etc.) is aligned with the communicating hole formed by the second through hole. By inserting the driving shaft member, one ends of the two divided tables can be rotatably connected with a relatively simple connecting structure. For example, by dropping the first through-hole and the second through-hole, which are engaging holes having downward openings, into the rotating shaft member from above, the rotating shaft member is divided into two parts. One end of the table is rotatably engaged.
Here, a plurality of male members protrude at intervals from one end of one of the divided tables, a plurality of female members protrude at intervals from one end of the other divided table, and corresponding male members for each female member. A plurality of communication holes may be formed by being fitted, and one common rotation shaft member may be inserted through the plurality of communication holes, or individual rotation shaft members may be inserted through the plurality of communication holes. . A male member and a female member protrude from one end of one of the divided tables, and a male member and a female member protrude from one end of the other divided table. may be fitted to form a communication hole.
Further, for example, in a form in which a plurality of female members protrude from one end of one of the divided tables at intervals, by reinforcing the female members with reinforcing ribs or the like, the one ends of the two divided tables can be freely rotated. can be connected with a strong connection structure.

In another aspect of the turntable device according to the present invention, the rotation support includes a rotation base that directly supports the rotation shaft member and the turntable, and a bearing mechanism arranged around the rotation base. and
The rotating base has a projecting member that projects upward, and the projecting member is provided with a third through hole through which the rotating shaft member is inserted,
The male member is fitted into the female member, the projecting member is arranged on the side of the female member, and the first through hole, the second through hole, and the third through hole are aligned to communicate with each other. forming a hole through which the rotary shaft member is inserted;
The bearing mechanism has an outer ring, an inner ring, and a plurality of ball bearings disposed between the outer ring and the inner ring,
The rotating base is fixed to the inner ring, and the outer ring is fixed to a base.

According to this aspect, the rotation support includes the rotation base that directly supports the rotation shaft member and the turntable, and the bearing mechanism disposed therearound. The turntable is rotatably supported by the rotation support, which has excellent rotation performance and structural stability, by fixing the rotation base to the bearing mechanism and fixing the outer ring, which constitutes the bearing mechanism, to a reinforced concrete foundation. A turntable device can be formed.

Further, in another aspect of the turntable device according to the present invention, the divided table includes at least a plurality of shape steels placed side by side at intervals and flat steels attached to upper surfaces of the plurality of shape steels. It is characterized by having a rectangular shape or a substantially rectangular shape in plan view.

According to this aspect, the turntable has a width corresponding to the vehicle on which it is to be placed (for example, a width slightly wider than the width of the vehicle), or a substantially rectangular shape in plan view (the longitudinal length of the rectangle in plan view). By presenting a substantially rectangular shape with an arc with a diameter of 10 cm on the edge), for example, compared to a disk-shaped turntable in plan view, the overall size is smaller, the transportability is excellent, and the manufacturing cost is as low as possible. A turntable device with an inexpensive turntable can be formed. For example, a plurality of shaped steels such as H-shaped steels along the longitudinal direction are arranged at intervals, and the shaped steels are connected to each other by a plurality of shaped steels such as H-shaped steels along the lateral direction. A configuration in which a shaped steel frame is formed and a flat steel member on which a vehicle is directly mounted is connected to the top end of the shaped steel frame by welding or the like can be mentioned.

Further, in another aspect of the turntable device according to the present invention, a running board made of an annular flat steel is arranged along the locus of movement of the wheels, and the running board is fixed to a foundation.

According to this aspect, the running board made of an annular flat steel is disposed along the circular movement trajectory along which the wheels move, and the running board is fixed to a reinforced concrete foundation or the like. It is possible to solve various problems in the form in which the wheels move in the rail made of shaped steel. That is, with rails made of channel steel, etc., there is a problem that gravel, stones, etc. scattered at the site enter the rail and it is difficult to clean the inside of the rail. Cleaning is easy because the wheels run, and gravel and the like do not enter the running board. Furthermore, there is a problem that the rotation of the wheel is hindered by a stone or the like that has entered the rail made of channel steel or the like, and the rotation of the turntable is prevented. Because of the form in which the wheel travels, stones and the like do not enter the running board, and there is no fear that the rotation of the wheels will be hindered by stones or the like.

According to the turntable device of the present invention, smooth rotation of the turntable can be realized regardless of the position of the vehicle on the turntable.

1 is a side view of an example of a turntable device according to an embodiment; FIG. FIG. 2 is a view taken in the direction of arrows II-II in FIG. 1, and is a plan view of the turntable constituting the turntable device according to the embodiment as seen from below. FIG. 2 is a view taken in the direction of arrows III-III in FIG. 1, and is a plan view of the rotary support that constitutes the turntable device according to the embodiment; FIG. 2 is a view taken in the direction of arrows IV-IV in FIG. 1, and is a vertical cross-sectional view of the rotary support that constitutes the turntable device according to the embodiment. FIG. 4 is a plan view showing two divided tables and a rotating shaft member before they are assembled together; (a) is a view on the arrow VIa of FIG. 5, and (b) is a view on the arrow VIb of FIG.

A turntable device according to an embodiment will be described below with reference to the accompanying drawings. In addition, in the present specification and drawings, substantially the same components may be denoted by the same reference numerals, thereby omitting duplicate descriptions.

[Turntable device according to the embodiment]
An example of a turntable device according to an embodiment will be described with reference to FIGS. 1 to 6. FIG. Here, FIG. 1 is a side view of an example of the turntable device according to the embodiment. 2 is a view taken in the direction of arrows II-II in FIG. 1, which is a plan view of the turntable constituting the turntable device according to the embodiment as seen from below, and FIG. 3 is a view taken from III in FIG. FIG. 4 is a view in the direction of arrow -III, which is a plan view of the rotation support constituting the turntable device according to the embodiment; FIG. 4 is a view in the direction of arrow IV-IV in FIG. 1, showing the rotation support; It is a vertical cross-sectional view of. Furthermore, FIG. 5 is a plan view showing two divided tables and a rotating shaft member before being assembled together, FIG. 5 is a VIb arrow directional view.

As shown in FIGS. 1 and 2, the turntable device 100 includes a turntable 10 that rotates with a vehicle V placed thereon, and a turntable 10 that rotates at the center of the turntable 10 in the longitudinal direction L1. and a rotary support 30 for freely supporting. At both ends of the turntable 10 in the longitudinal direction L1, entrance/exit slopes are provided.

The turntable 10 is formed by rotatably connecting one ends 10a of two divided tables 10A with a rotating shaft member 40. As shown in FIG. As shown in FIG. 2, the turntable 10 is formed by connecting two divided tables 10A each having a substantially rectangular shape in plan view along the longitudinal direction L1 so that the division table 10A has a length in the longitudinal direction L1. It has twice the length of the width. The length of the turntable 10 in the longitudinal direction L1 is at least longer than the distance between the front and rear wheels of the vehicle on which it is to be placed, and the width in the lateral direction L2 orthogonal to the longitudinal direction L1 is the width of the vehicle on which it is to be placed. It is set to a certain degree (for example, slightly wider).

The divided table 10A includes a plurality of longitudinal beams 11 (four in the illustrated example) arranged at intervals, and a plurality of lateral beams 12 connecting adjacent longitudinal beams 11 (in the illustrated example, three in a row). A shaped steel frame formed by welding together a total of 15 short beams of five elements and one long beam on the outermost periphery, and welded to the top of the shaped steel frame It has at least the top surface material 13 which is made. The longitudinal beam 11 and the transverse beam 12 in the illustrated example are made of H-shaped steel having the same cross-sectional dimensions, and the top face member 13 is made of flat steel. In addition, the longitudinal direction beam and the transverse direction beam may be formed of other shaped steel materials such as channel steel.

At one end 10a of the divided table 10A, an end member 14 made of channel steel having a length corresponding to the width in the lateral direction is welded to the end of each longitudinal beam 11. As shown in FIG. Two male members 15 and two female members 16 are welded to the web of the end member 14 at intervals, and these members protrude toward the other divided table 10A. ing. The male member 15 and the female member 16 of one divided table 10A and the other divided table corresponding thereto are arranged so that the male member 15 of one divided table 10A fits into the female member 16 of the other divided table 10A. Attached to the webs of both end members 14 are female members 16 and male members 15 of 10A. As shown in FIG. 5, in the illustrated turntable 10, each divided table 10A has two male members 15 and two female members 16, and a total of four sets of corresponding male members 15 and female members 16 are provided. are adapted to be fitted together.

The male member 15 is formed of a flat steel, and as shown in FIG. 6A, a first through hole 15a, which is a U-shaped engaging hole in plan view and has an opening downward, is formed on the wide surface of the flat steel. It is On the other hand, as shown in FIG. 6(b), the female member 16 is formed of two sheets of flat steel with a gap into which the male member 15 is fitted. A second through hole 16a, which is a U-shaped engagement hole in plan view, is formed. The first through hole 15a provided in the male member 15 and the second through hole 16a provided in the female member 16 are dropped from above the rotating shaft member 40 so as to be rotatably hooked on the rotating shaft member 40. It's becoming Although illustration is omitted, the first through hole and the second through hole may be circular holes, and the rotating shaft member 40 may be inserted through both circular holes from the side. As shown in FIGS. 5 and 6(b), the two flat steels forming the female member 16 are welded with reinforcing ribs 17 formed of flat steels perpendicular to the flat steels. Ribs 17 are also welded to the web of end member 14 . A communication hole is formed by aligning the first through hole 15a and the second through hole 16a in a state in which the male member 15 is fitted between the two flat steels forming the female member 16. be.

As shown in FIG. 1, wheels 18 are rotatably attached to the lower surface (lower end of the shaped steel frame) of the split table 10A on the side of the other end 10b opposite to the one end 10a connected to the other split table 10A. A motor 20 (an example of driving means) is arranged near the wheel 18 . A drive shaft 20a of the motor 20 and a rotating shaft 18a of the wheel 18 are connected via a transmission mechanism 25 so that the driving force of the motor 20 can be freely transmitted to the wheel 18. As shown in FIG.

Here, the transmission mechanism 25 in the illustrated example is composed of a sprocket and a chain. good. In the illustrated example, each divided table 10A has two wheels 18 on the lower surface on the side of the other end 10b, and the axes of the rotating shafts 18a are arranged so as to face the center of the movement locus circle L3 of the wheels 18 (see FIG. 2). , and each wheel 18 is driven to rotate by its own motor 20 through a transmission mechanism 25 . The number of units of the wheel 18 and the motor 20 may be one set, three sets or more, in addition to the two sets shown in the figure, from the viewpoint of ensuring stable rotational movement of the divided table 10A A plurality of sets of units is preferred.

As shown in FIGS. 1, 3, and 4, the rotary support 30 has a disk-shaped rotation base 31 in plan view, and an annular bearing mechanism 35 disposed around the rotation base 31 in plan view. .

As shown in FIGS. 2 to 4, the top end of the rotation base 31 is provided with four projection members 32 projecting upward at intervals. It is positioned laterally of the female member 16 . Each projecting member 32 is provided with a third through hole 32a that is circular in plan view.

The turntable device 100 is installed, for example, by laying crushed stone 91 on leveled ground, leveling concrete 92 on the crushed stone 91, and partially moving the rotary support 30 at the rotation center position of the turntable 10. A reinforced concrete foundation 50 to be fixed is constructed, and a reinforced concrete foundation 55 is constructed in a ring shape along the movement locus circle L3 of the wheel 18 . Then, a running board 60 made of flat steel is disposed above the foundation 55, the running board 60 is fixed to the foundation 55 via anchor bolts 61, and is attached to the central foundation 50 via the anchor bolts 51. The rotary support 30 is fixed.

Next, as shown in FIG. 5, a rotation shaft member 40 formed of a steel pipe, a solid cylindrical steel bar, or the like is inserted in the X1 direction into the third through hole 32a of each projecting member 32 projecting upward. By doing so, the rotation shaft member 40 is installed in the plurality of third through holes 32a. Next, the female member 16 of one of the divided tables 10A is positioned on the side of the projecting member 32 in the X2 direction, and the second through hole 16a (engagement hole) of the female member 16 is rotatable to the rotating shaft member 40. hook to The male member 15 of the other divided table 10A is fitted into the female member 16 in the X3 direction, and the first through hole 15a (engagement hole) of the male member 15 is rotatably hooked to the rotary shaft member 40. As shown in FIG. In this manner, when the male member 15, the female member 16, and the projecting member 32 are positioned relative to each other, the first through hole 15a, the second through hole 16a, and the third through hole 32a are communicated with each other. , and the rotary shaft member 40 is inserted into the communication hole, whereby the two divided tables 10A are rotatably connected to each other via the rotary shaft member 40, and the turntable 10 is formed. be done. In particular, in the illustrated example, the first through hole 15 a (engagement hole) of the male member 15 and the second Since the through hole 16a (engagement hole) is dropped from above and engages, it becomes easy to rotatably attach the one end 10a of both of the divided tables 10A to the rotating shaft member 40. FIG.

In the illustrated example, the rotating shaft member 40 is inserted over the two sets of the male member 15, the female member 16 and the protruding member 32, so that the two divided tables 10A can be rotated freely by the two rotating shaft members 40. Although they are connected, the four sets of male members 15, female members 16, and projecting members 32 may be rotatably connected by one common rotating shaft member.

As shown in FIGS. 3 and 4 , the bearing mechanism 35 has an inner ring 36 , an outer ring 37 and a plurality of ball bearings 38 arranged between the inner ring 36 and the outer ring 37 . A spacer 39 is arranged between the ball bearings 38 arranged in the circumferential direction. The outer ring 37 is provided with a plurality of anchor bolts 51 spaced apart in the circumferential direction, and the outer ring 37 is fixed to the foundation 50 by embedding each anchor bolt 51 in the foundation 50 made of reinforced concrete. be.

On the other hand, the rotating base 31 is fixed by welding or bolting to the inner ring 36 that rotates inside the outer ring 37 . With this configuration, the turntable 10 is rotatably supported by the rotary support 30 having excellent rotational performance and structural stability.

As shown in FIGS. 3 and 4, a hollow 33 is provided in the central position of the rotation base 31 and penetrates in the vertical direction. Installed. A plurality of electrical wires extend from the power source (none of which are shown) and lead to each motor 20 via slip rings 70 . By applying the slip ring 70, tangling of the electrical wiring leading to each motor 20 is eliminated when the turntable 10 rotates.

As shown in FIG. 1, since the turntable 10 is configured by pin-coupling the two divided tables 10A via the rotation shaft member 40, each divided table 10A has two fulcrums R1 ( A two-point support structure having a rail fulcrum) and a fulcrum R2 (central fulcrum) and a two-point support structure having two fulcrums R3 (rail fulcrum) and R4 (central fulcrum). , the three-point support structure is eliminated.

Therefore, when a vehicle V loaded with, for example, a load is placed on the turntable 10, the total weight W of the vehicle V including the weight of the load is divided into two proportional weights according to the position of the center of gravity G of the vehicle V. Although the weights W1 and W2 are apportioned, the apportioned weights W1 and W2 are surely loaded on the divided tables 10A of the two-point support structure. As a result, unlike the conventional turntable device having a three-point support structure, there is no problem that one of the wheels idles according to the position of the center of gravity of the vehicle and the smooth rotation of the turntable is hindered.

In addition, since the turntable 10 constituting the turntable device 100 is divided into two divided tables 10A, when the turntable device 100 is installed, the transportability and installation of the components including the turntable 10 are improved. The assemblability at the time of is improved. In particular, since the turntable 10 of the illustrated example is formed by the divided table 10A that is approximately rectangular in plan view, it is a disk-shaped turntable in plan view (in this case, the plan view shape of the divided table is a semi-disc shape). Its transportability and assembling properties are further improved.

Furthermore, in the turntable device 100, since the annular running board 60 along the movement locus circle along which the wheels 18 move is formed of flat steel, the wheels move within the rails made of shaped steel such as channel steel. As in the case of the embodiment, there is no problem that gravel, stones, etc. scattered at the site enter the rail, making it difficult to clean the inside of the rail. In addition, there is no risk that a stone or the like that has entered the rail made of channel steel or the like will hinder the rotation of the wheels and prevent the rotation of the turntable.

It should be noted that other embodiments may be possible in which other components are combined with the above-described configurations, etc., and the present invention is not limited to the configurations shown here. . Regarding this point, it is possible to change without departing from the gist of the present invention, and it can be determined appropriately according to the application form.

10: Turntable 10A: Divided table 10a: One end 10b: Other end 11: Longitudinal direction beam 12: Transverse direction beam 13: Top surface material 14: End member 15: Male member 15a: First through hole (engagement hole)
16: Female member 16a: Second through hole (engagement hole)
17: Reinforcing rib 18: Wheel 18a: Rotating shaft 20: Driving means (motor)
25: Transmission mechanism (sprocket chain)
30: Rotation Support 31: Rotation Base 32: Projecting Member 32a: Third Through Hole 33: Hollow 35: Bearing Mechanism 36: Inner Ring 37: Outer Ring 38: Ball Bearing 40: Rotating Shaft Member 50, 55: Foundation 60 : Running board 70: Slip ring 80: Entrance/exit slope 100: Turntable device L1: Longitudinal direction L2: Transverse direction L3: Moving locus circle V: Vehicle G: Center of gravity T1: Front wheel T2: Rear wheel W: Vehicle weight W1 , W2: proportional weight R1, R2, R3, R4: fulcrum

Claims (5)

A turntable device that changes the traveling direction of a vehicle by rotating it while the vehicle is placed thereon,
two split tables forming a turntable;
a rotating shaft member that rotatably connects one ends of the two divided tables;
Wheels and drive means for rotating the wheels, which are attached to the lower surfaces of the other ends of the two divided tables;
A turntable device, comprising: a rotary support disposed at the longitudinal center of the turntable and rotatably supporting the rotary shaft member and the turntable. A male member protrudes from the one end of one of the divided tables, and the male member is provided with a first through hole through which the rotating shaft member is inserted,
A female member protrudes from the one end of the other divided table, and the female member is provided with a second through hole through which the rotating shaft member is inserted,
The male member is fitted into the female member, the first through-hole and the second through-hole are aligned to form a communicating hole, and the rotating shaft member is inserted through the communicating hole, whereby the 2. A turntable device according to claim 1, characterized in that a turntable is formed. The rotation support has a rotation base that directly supports the rotation shaft member and the turntable, and a bearing mechanism arranged around the rotation base,
The rotating base has a projecting member that projects upward, and the projecting member is provided with a third through hole through which the rotating shaft member is inserted,
The male member is fitted into the female member, the projecting member is arranged on the side of the female member, and the first through hole, the second through hole, and the third through hole are aligned to communicate with each other. forming a hole through which the rotary shaft member is inserted;
The bearing mechanism has an outer ring, an inner ring, and a plurality of ball bearings disposed between the outer ring and the inner ring,
3. The turntable apparatus according to claim 2, wherein said rotating base is fixed to said inner ring and said outer ring is fixed to a foundation. The dividing table comprises at least a plurality of shaped steels placed side by side at intervals and flat steels attached to the upper surfaces of the plurality of shaped steels, and has a rectangular or substantially rectangular shape in plan view. 4. A turntable device as claimed in any one of claims 1 to 3. 5. The turn according to any one of claims 1 to 4, characterized in that an annular running board made of flat steel is disposed along the locus of movement of the wheels, and the running board is fixed to a foundation. table device.

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