JP2008100619A - Turntable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a turntable suitable for exhibition of a very heavy vehicle in a museum or the like at low cost. <P>SOLUTION: The load applied to a beam 14 is received by a turning ring bearing 22 at a center and turn driving devices 24 at both ends. A frame 18 as a strength member of the beam 14 is divided into three section of a center frame 18C and side frames 18A, 18B, and axially joined with each other by bearings 20 to adequately distribute the load applied to the beam 14. Thus, the maximum loading weight of the beam 14 can be increased without increasing the sectional area of the frame 18 as the strength member of the beam 14, and the carving depth of a pit 12 can be suppressed shallow. By supporting outer circumferential side ends of the side frames 18A, 18B having the largest inertia moment by the turn driving devices 24, the driving force requested for the turn driving devices 24 when turning the beam 14 can be minimized. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a turntable for a railway vehicle.

In the days when steam locomotives were the main role of railways, it was necessary to change the direction of the locomotives every time the train turned up, so the rolling stock for railway vehicles was always called at major stations. It was installed. This turntable is an arbitrary one of a track spanned on a diameter of a pit dug into a cylindrical shape, a track laid on the beam, and a plurality of tracks radiated along the edge of the pit. The beam is freely swiveled in the pit so as to coincide with one (see, for example, Patent Document 1), and is classified into an upper turntable and a lower turntable in terms of its structure. Can do.
First, the upper turntable is configured such that all the frames constituting the beam are accommodated in the pit, and only the rail laid on the beam protrudes above the pit. On the other hand, in order to increase the strength of the frame that constitutes the beam, the downturn type turntable is widened in the vertical direction so that the upper end of the frame rises to a position higher than the rail, and the rail is viewed from the side. It is configured so as to be hidden.

Japanese Examined Patent Publication No. 2-15682 (page 2, Fig. 1)

Therefore, the upper road type turntable is suitable for a relatively small turntable that does not need to increase the strength of the beam by expanding the width of the frame up and down. On the other hand, the downturn type turntable is suitable for a large turntable with a large maximum load because it is easy to increase the strength of the beam by increasing the width of the frame.
However, the downturn type turntable has a drawback in that the railcar on the turntable is hidden by the frame because the frame rises to a position higher than the rail. Therefore, for example, it is not suitable for a turntable for display of railway vehicles in a museum or the like, and it becomes a turntable for practical use. In this regard, the upper-type turntable is suitable for such a purpose because the railcar on the turntable is not hidden in the frame, but in order to increase the maximum loading capacity, the pit depth is increased to increase the frame. Therefore, it is difficult to adopt the large turntable due to the installation cost of the turntable.
The present invention has been made in view of the above problems, and its object is to increase the maximum loading weight of the beam of the turntable without increasing the width of the frame, which is a strength member of the beam, in the vertical direction. It is an object of the present invention to provide a turntable suitable for exhibiting a heavy vehicle at a low cost and in a museum or the like.

In order to solve the above-mentioned problems, the turntable of the present invention receives the load applied to the beam at the center and both ends, and appropriately disperses the load so that the frame itself has high strength so that the frame itself has high strength. The maximum load weight of the beam is increased without increasing the width of the frame. Therefore, a relatively large turntable can be configured without increasing the pit digging depth while taking the form of the upper turntable.
(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

(1) An arbitrary one of a line laid over the diameter of a pit dug into a cylindrical shape, a line laid on the beam, and a plurality of lines laid radially along the edge of the pit; Is a rolling stock for a railway vehicle in which the beam freely turns in a pit so that a frame having a constant vertical width over the entire length is used as a strength member of the beam, and A turntable in which a center portion of the frame is supported by a turning wheel bearing provided in the center of a pit, and an outer peripheral side end portion of the frame is supported by a turning drive device.
The turntable described in this section receives the load applied to the beam by the center turning wheel bearing and the turning drive device at both ends, so that the frame itself has high strength so that the frame itself has high strength. It is possible to increase the maximum load weight of the beam without increasing the width in the vertical direction. Therefore, the digging depth of the pit can be kept shallow. In addition, with the swivel bearing provided at the center of the pit as a reference, the outer peripheral side end of the side frame with the largest moment of inertia is supported by the swivel drive device, which is required for the swivel drive device when turning the beam. The driving force generated can be minimized.

(2) An arbitrary one of a track laid over the diameter of a pit dug into a cylindrical shape and laid on the beam, and a plurality of tracks laid radially along the edge of the pit; Is a rolling stock for a railway vehicle in which the beam freely turns in a pit so that a frame having a constant cross-sectional shape over the entire length is used as a strength member of the beam, and the frame is Each of the center frame and the side frame is supported from below so that the center frame and the side frame can pivot about the center frame. Turntable.
The turntable described in this section divides the frame, which is a strength member of the beam, into three parts, a center frame and a side frame, and pivots each other around the center frame and the center frame. By being supported from below, the load applied to the beam is appropriately distributed so as to be possible. Therefore, the maximum load weight of the beam can be increased without increasing the cross-sectional area of the frame, which is a strength member of the beam, so that the frame itself has high strength. Therefore, the digging depth of the pit can be kept shallow.
In addition, as means for supporting the center frame and the side frame from below, an annular rail is laid on the bottom surface of the pit and each frame is supported by a carriage traveling on the rail, or the center portion of the center frame is The thing supported by a slewing ring bearing is mentioned.

(3) An arbitrary one of a line laid over the diameter of a pit dug into a cylindrical shape, a line laid on the beam, and a plurality of lines laid radially along the edge of the pit; Is a rolling stock for a railway vehicle in which the beam freely turns in a pit so that a frame having a constant cross-sectional shape is used as a strength member of the beam, and the frame is A center frame and a side frame that are divided into three parts and are pivotally attached to each other by a horizontally extending bearing. The center frame is supported by a swivel ring bearing provided in the center of a pit, and an outer peripheral side end of the side frame is turned. A turntable supported by a drive device (claim 1).
The turntable described in this section accepts the load applied to the beam by the center turning wheel bearing and the turning drive device at both ends, and divides the frame, which is a strength member of the beam, into a center frame and a side frame. They are attached to each other and the load applied to the beam is properly distributed. Therefore, the maximum load weight of the beam can be increased without increasing the cross-sectional area of the frame, which is a strength member of the beam, so that the frame itself has high strength. Therefore, the digging depth of the pit can be kept shallow. In addition, with the swivel wheel bearing provided in the center of the pit as a reference, the outer peripheral side end of the side frame with the largest moment of inertia is supported by the swivel drive device, which is required for the swivel drive device when turning the needle. The driving force generated can be minimized.

(4) A turntable in which a deep bottom portion for housing the swivel bearing is formed at the center of a shallow bottom portion having a depth necessary for accommodating the beam and the turning drive device at the bottom of the pit. 2).
In the turntable described in this section, it is possible to install a large slewing ring bearing in the deep bottom portion at the center of the pit, and the slewing ring bearing can carry a large load. Further, since the deep bottom portion is formed only at the center of the pit and the swivel ring bearing is housed therein, it is possible to prevent the depth of the entire pit from being increased.

(5) A turntable in which a rail is laid at the center in the width direction of the beam, and a walkway is provided on the side of the rail (Claim 3).
The turntable described in this section can cross a beam when a person walks down the corridor, and can easily approach the railcar on the turntable.

(6) The turning drive device is installed in the pit so as to surround the circumference of the annular rail laid along the peripheral wall surface of the pit, the electric traveling wheel traveling on the annular rail, and the turning wheel bearing. A turntable including a power supply trolley for the electric traveling wheels.
In the turntable described in this section, the beam is swung by a rotating wheel bearing provided in the center of the pit, an annular rail laid along the peripheral wall surface of the pit, and an electric traveling wheel that travels on the annular rail. To do. Also, by installing the power supply trolley of the electric traveling wheel in the pit so as to surround the periphery of the slewing wheel bearing, it is possible to prevent the power supply trolley from being exposed to the outside of the pit and to keep the installation radius of the power supply trolley small. it can.

(7) At the outer peripheral side end of the side frame, when the line laid on the beam and the plurality of lines radiated along the pit edge are in alignment, the edge of the pit A driver's cab in which a protrusion that engages with a recess provided in the door is provided so as to be freely raised and lowered.
The driver's cab described in this section is configured so that the recess provided on the edge of the pit and the protrusion protruding from the outer peripheral side end of the side frame are engaged with the line laid on the beam and the edge of the pit. The alignment state with the track | route laid radially along is confirmed. On the other hand, the beam can be turned by immersing the protrusion into the outer peripheral side end of the side frame.

  Since the present invention is configured as described above, it is possible to increase the maximum load weight of the beam of the turntable without increasing the width of the frame, which is a strength member of the beam, in the vertical direction. It is possible to provide a turntable suitable for display of heavy vehicles.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Here, parts that are the same as or correspond to those in the prior art are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 1 and FIG. 2, the turntable 10 according to the embodiment of the present invention includes a rail 14 laid on a beam 14 with a beam 14 spanning the diameter of a pit 12 dug into a cylindrical shape. The beam 14 freely swivels in the pit 12 so that the rail 16 and the arbitrary one of the rails 17 of the plurality of tracks radiated along the edge of the pit 12 coincide with each other.

  As the strength member of the beam 14, a frame 18 having a constant cross-sectional shape over the entire length is used. The two frames 18 are reinforced by a horizontal frame 19 made of a plurality of H-shaped steels. The frame 18 is divided into three parts, side frames 18A and 18B and a center frame 18C. The center frame 18C and the side frames 18A and 18B are axially attached to each other by a bearing 20 (FIG. 8) extending in the horizontal direction. . In the embodiment of the present invention, as shown in FIG. 3 to FIG. 5, H-shaped steel is used for the frame 18, so that it matches the gauge width of the rail 14 (see reference numeral 18 </ b> C in FIG. 5). Two are used.

The center frame 18C is symmetrical in the front-rear and left-right directions. The side frames 18A and 18B have the same shape. The side frames 18A and 18B and the center frame 18C are divided so that the side frames 18A and 18B cover the center frame 18C in a complementary manner as shown in FIGS. It has a shape.
The bearing 20 for connecting the side frames 18A and 18B and the center frame 18C has a pin 20b rotatably held by a two-part bearing 20a, and a washer between both ends of the pin 20b and the two-part bearing 20a. It has a structure that is fixed by a nut 20d through 20c, and has a large allowable load that can be used for wearing a shaft between a bridge and a bridge. A two-part bearing 20a is fixed to each of the side frames 18A and 18B and the center frame 18C.

  Further, the bottom of the pit 12 is formed with a deep bottom portion 12b for housing the swivel bearing 22 at the center of a shallow bottom portion 12a having a depth necessary for accommodating the beam 14 and the turning drive device 24. The center frame 18 </ b> C is supported by a swivel bearing 22 provided on the deep bottom portion 12 b of the pit 12. The slewing wheel bearing 22 can be used as a slewing wheel for heavy loads used in slewing wheels such as large cranes. In the illustrated example, the center frame 18 </ b> C has a length that is longer than the diameter of the slewing ring bearing 22, but the installation width of the two center frames 18 </ b> C is narrower than the diameter of the slewing ring bearing 22. For this reason, in order to prevent the swivel ring bearing 22 from protruding in the width direction of the beam 14, a length of one side is obtained by adding a reinforcing material to the center portion of the two center frames 18C outward in the width direction. A bearing stand 21 having a square shape in plan view (FIG. 3) in which the diameter exceeds the diameter of the slewing ring bearing 22 is formed.

Further, the outer peripheral side end portions of the side frames 18 </ b> A and 18 </ b> B opposite to the base end side ends connected to the center frame 18 </ b> C by the bearing 20 are supported by the turning drive device 24. As shown in FIG. 9, the turning drive device 24 includes an annular rail 26 (FIGS. 1 and 2) laid along the peripheral wall surface of the pit 12, an electric traveling wheel 28 that travels on the annular rail 26, A power supply trolley 30 for the electric traveling wheel 28 is provided in the pit 12 so as to surround the periphery of the slewing wheel bearing 22.
The driving traveling wheel 28 includes a reduction gear 28a with a motor, and is fixed to the side frames 18A and 18B via bearings 28b. Further, in the illustrated example, the driving traveling wheel 28 is paired with a driven wheel 29 that does not have a motor-equipped reduction gear 28 a, and the rotating shafts of the electric traveling wheel 28 and the driven wheel 29 are both of the beam 14. It faces the turning center (the turning center of the turning wheel bearing 22). As shown in FIGS. 10B and 10C, the power supply trolley 30 has a plurality of trolley wires 30b in the vicinity of a stepped portion between the deep bottom portion 12b and the shallow bottom portion 12a via a trolley mounting base 30a. It is laid in a circle so as to surround the slewing ring bearing 22, and the current collector 30c is fixed to the side frames 18A and 18B via the current collector mounting bracket 30d.

  A walkway 32 is provided on the side of the rail 14 laid at the center in the width direction of the beam 14 as shown in FIGS. 6 and 7. The walkway 32 is obtained by spreading a floor plate 36 on a walkway support 34 made of H-shaped steel, which is fixed to each of the side frames 18A, 18B and the center frame 18C shown in FIG. As the floor board 36, it is desirable to use a plate material considering weight reduction and drainage such as punching metal. In the example of FIG. 7, the floor plate 36 constituting the walkway 32 is also installed between the rails 16. Further, the floor board 36 is divided into 15 sheets as a whole in consideration of convenience at the time of carrying in. Furthermore, a fence 38 (FIG. 2) for preventing falls and a trap 40 (FIGS. 1 and 7) for descending to the pit 12 are provided at the side end of the walkway. In addition, the fence 38 considers visibility, such as a transparent acrylic board, so that the railway vehicle mounted on the beam 14 may not be hidden.

  Further, as shown in FIG. 11, the rails 16 of the track laid on the beam 124 and a plurality of tracks radiated along the edge of the pit 12 are formed at the outer peripheral side ends of the side frames 12 </ b> A and 12 </ b> B. When the rail 17 is in an aligned state, a protrusion 44 that engages with a recess 42 provided on the edge of the pit 12 is provided so as to be able to appear and retract. The recess 42 is a recess formed on the edge of the pit 12 with a receiving metal 46 for the protrusion 44, so that the position of the recess 46 a for receiving the protrusion 44 can be finely adjusted. The position 46 can be moved. On the other hand, the protrusion 44 is a metal plate whose base ends are pivotally attached to the side frames 12A and 12B, and is manually rotated as indicated by the solid line and the dotted line in the figure, thereby the side frames 12A and 12B. From the outer peripheral side end portion, it is possible to move in and out with respect to the concave portion 42 formed at the edge of the pit 12.

According to the embodiment of the present invention configured as described above, the following operational effects can be obtained. First, the turntable 10 receives a load applied to the beam 14 by a turning wheel bearing 22 at the center and turning driving devices 24 at both ends. Further, the frame 18 which is a strength member of the beam 14 is divided into a center frame 18C and side frames 18A and 18B, which are axially attached to each other by a bearing 20, and a load applied to the beam 14 is appropriately dispersed. Therefore, the maximum load weight of the beam 14 can be increased without increasing the cross-sectional area (width in the vertical direction) of the frame 18 that is a strength member of the beam 14 so that the frame 18 itself has high strength. Become. Therefore, the digging depth of the pit 12 can be kept shallow. Further, the beam 14 is turned by supporting the outer peripheral side end portions of the side frames 18A, 18B having the largest moment of inertia with a turning drive device 24 with reference to the turning ring bearing 22 provided in the center of the pit 12. In this case, the driving force required for the turning drive device 24 can be minimized.
Therefore, according to the embodiment of the present invention, while adopting the form of the upper turntable, it is possible to enter an electric locomotive or the like exceeding 100 tons without increasing the pit digging depth. The turntable 10 can be obtained at low cost.

  Further, the pit 12 has a deep bottom portion 12 b for accommodating the swivel bearing 22 at the center of the shallow bottom portion 12 a having a depth necessary for accommodating the beam 14 and the turning drive device 24. Therefore, the large slewing ring bearing 22 can be installed in the deep bottom portion 12b in the center of the pit 12, and the large volume bearing 22 can carry a large load. Further, since the deep bottom portion 12b is formed only at the center of the pit 12, and the swivel ring bearing 22 is housed therein, it is possible to prevent an increase in the digging depth of the entire pit 12 and to install the turntable. Therefore, it is possible to prevent the cost of the pit 12 from increasing significantly.

  Moreover, since the rail 16 is laid in the center part of the width direction of the beam 14, and the walkway 32 is provided on the side of the rail 16, it becomes possible for a person to cross the beam 14 by walking along the walkway 32. The railway vehicle on the turntable 10 can be easily approached. Therefore, for example, it is an optimum turntable for display of railway vehicles in a museum or the like.

  The beam 14 is turned by an annular rail 26 laid along the peripheral wall surface of the pit 12 together with a turning wheel bearing 22 provided in the center of the pit 12, and an electric traveling wheel 28 traveling on the annular rail 26. To do. Further, by installing the power supply trolley 30 of the electric traveling wheel 28 in the pit 12 so as to surround the periphery of the slewing wheel bearing 22, it is possible to prevent the power supply trolley 30 from being exposed to the outside of the pit 12. Further, the installation radius of the power supply trolley 30 can be kept small, and an increase in installation cost can be prevented.

  Further, the recesses 42 provided on the edge of the pit 12 and the protrusions 44 protruding from the outer peripheral side end portions of the side frames 18A and 18B are engaged, whereby the rail 16 of the line laid on the beam 14; The alignment state with the rail 17 of the track laid radially along the edge of the pit 12 is confirmed. On the other hand, the beam 14 can be turned by immersing the protrusion 44 in the outer peripheral side ends of the side frames 18A and 18B.

It is a schematic diagram which shows the turntable which concerns on embodiment of this invention, (a) is a top view, (b) is the side view seen from the direction parallel to a rail. It is the side view which looked at the turntable shown by FIG. 1 from the direction orthogonal to a rail. It is a top view of the flame | frame of the turntable shown by FIG. It is an enlarged view of the frame center part of the turntable side view shown in FIG. It is the longitudinal cross-sectional view which looked at the frame center part shown by FIG. 4 from the direction orthogonal to a rail. It is a schematic diagram which shows the walkway of the turntable shown by FIG. 1, Comprising: It is the side view seen from the direction orthogonal to a rail. It is a schematic diagram which shows the walkway of the turntable shown by FIG. 1, (a) is a top view, (b) is the side view seen from the direction parallel to a rail. It is a schematic diagram which shows the bearing which connects a center frame and a side frame of the turntable shown by FIG. 1, (a) is a side view, (b) is a fragmentary sectional view. It is a schematic diagram which shows the turning drive apparatus of the turntable shown by FIG. 1, (a) is a top view, (b) is the side view seen from the direction parallel to a rail, (c) is the arrow of (a) FIG. It is a schematic diagram of the electric power supply trolley of the turntable shown by FIG. 1, (a) is a top view, (b) is sectional drawing seen from the direction parallel to a rail, (c) is the principal part expansion of (b). FIG. It is a schematic diagram which shows the protrusion provided in the outer peripheral side edge part of the side frame of the turntable shown by FIG. 1 which engages with the recessed part of the edge of a pit, (a) is a top view, (b) is It is sectional drawing seen from the direction parallel to a rail.

Explanation of symbols

  10: Turntable, 12: Pit, 12a: Shallow bottom, 12b: Deep bottom, 14: Beam, 16, 17: Rail, 18: Frame, 18A, 18B: Side frame, 18C: Center frame, 22: Swivel wheel bearing , 24: turning drive device, 26: annular rail, 28: electric traveling wheel, 30: feeding trolley, 32: corridor

Claims (4)

A beam is stretched over the diameter of a pit dug into a cylindrical shape, and a line laid on the beam coincides with any one of a plurality of lines laid radially along the edge of the pit. As described above, the beam is a turntable for a railway vehicle that freely turns in a pit,
As the strength member of the beam, a frame having a constant cross-sectional shape over the entire length is used, and the frame is divided into a center frame and a side frame and is attached to each other by bearings extending in the horizontal direction, and the center frame is A turntable supported by a turning wheel bearing provided in the center of the pit, and an outer peripheral side end portion of the side frame being supported by a turning drive device. The bottom of the pit is formed with a deep bottom portion for housing the swivel bearing at the center of a shallow bottom portion having a depth necessary for accommodating the beam and the turning drive device. Turntable described. The turntable according to claim 1 or 2, wherein a rail is laid in a central portion in the width direction of the beam, and a walkway is provided on a side of the rail. The turning drive device includes an annular rail laid along a peripheral wall surface of the pit, an electric traveling wheel that travels on the annular rail, and the electric motor that is installed in the pit so as to surround the periphery of the turning wheel bearing. The turntable according to any one of claims 1 to 3, further comprising a feeding trolley for traveling wheels.

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