JP6676187B2 - Straddle type monorail switch - Google Patents

Description

  The present invention relates to a straddle-type monorail switch that selectively changes the track of a straddle-type monorail from one path to another path.

  A straddle-type monorail turnout (hereinafter, simply referred to as a “turnout”) selectively changes the track of a straddle-type monorail from one path to the other path. The branching device generally includes a branch girder, a bogie, a conversion device and the like. The branch girder is composed of a plurality of branch girders connected in series in a manner continuous with the fixed end track girder fixed on the ground. The bogie supports the underside of the branch girder and the articulation portion of the branch girder, and carries the branch girder in a direction intersecting the longitudinal direction of the branch girder. The conversion device is a device that converts a branch by moving a plurality of branch girders. In addition, each truck is arranged on a rail laid along the moving direction of the truck.

  The conversion device has an input shaft, an output shaft, an arm, and the like. Here, the input shaft is a shaft connected to a power source. The output shaft includes a gear that meshes with the gear of the input shaft. The arm is connected to the output shaft and pivots on a horizontal plane to move the branch girder.

  The conversion device includes a ground installation method in which a speed reducer or the like is installed on the ground side, and a branch girder suspension method in which the speed reducer or the like is hung on the lower surface of the branch girder. In the case of the ground installation type, a groove into which the tip of the turning arm is fitted is provided below the branch girder, and in the case of the branch girder suspension type, a groove into which the arm tip is fitted is provided on the ground side.

  For example, Patent Literature 1 describes a conventional example of a branching device. Here, when the tip of the arm moves along the groove, the connected series of branch girders move from one path to the other. Then, the conversion is completed by fixing the branch girder after the movement is completed.

JP 2012-172318 A

  There are two types of branching devices for changing the course of a monorail vehicle: a two-way turning route (two-way splitter) and a two-way turning direction (divergent turnout). In the two-branch splitter, the amount of movement of the split girder constituting the splitter along the turning direction (direction intersecting the longitudinal direction of the split girder) is small. For this reason, in the two-branch splitter, the arm of the conversion device installed on the ground side can turn to change the course in two directions.

  On the other hand, in a multi-way branching device, there are many places where the branch girder is stopped and fixed, and the amount of movement along the turning direction of the branch girder (direction intersecting the longitudinal direction of the branch girder) is large. For this reason, the multi-purpose branching device employs a girder suspension system in which the conversion device is hung on the lower surface of the branch girder. Here, by installing a plurality of grooves on the ground side into which the tip of the revolving arm fits, it is possible to change courses in a plurality of directions involving a large amount of movement.

  In a multi-branch device, a plurality of conversion devices for converting track girder are provided below a plurality of branch girder connected in series. These conversion devices are provided with an electric motor as a power source. When converting the branching device, a plurality of motors are controlled in synchronization with each other so that the serially connected branch girder is smoothly connected after the conversion.

  However, the multiple branching device having the above-described configuration tends to increase the initial cost because a motor corresponding to each conversion device is required. Further, the speed reducer constituting each conversion device, the gap of the groove engaged with the tip of the arm, and the like change with the passage of time. For this reason, in order to maintain the moving amount of the branch girder at the time of installation at the branch unit, the electric motor is controlled synchronously. However, the control device for performing the synchronous control has many contactors and limit switches, and thus has a problem that the failure rate tends to be relatively high. Furthermore, it is difficult to finely adjust the stop position of each branch girder using a plurality of control devices.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a straddle-type monorail that does not require a control device for synchronous control of an electric motor that changes a branch girder, can improve reliability by improving a failure rate, and can reduce periodic maintenance and inspection work. It is to provide a turnout.

  In order to achieve the above object, one of the typical straddle-type monorail turnouts of the present invention is movable and capable of moving in a longitudinal direction to switch a course between a fixed-end fixed girder and a plurality of movable end-side fixed girder. A plurality of branch girders connected in series in the direction, a motor provided at the lower part of the branch girder, a connecting shaft transmitting torque from the motor, a joint connected to the connecting shaft, and A conversion device for moving the branch girder by the transmitted rotational force, and a joint supporting part provided at a lower portion near a center in a longitudinal direction of the branch girder and supporting a vertical position of the joint, I do.

  ADVANTAGE OF THE INVENTION According to this invention, in the straddle type monorail branching device, the control apparatus for the synchronous control of the electric motor which changes a branch girder is unnecessary, and periodic maintenance work can be reduced.

FIG. 1 is a plan view showing an embodiment of a straddle-type monorail branch device of the present invention. FIG. 2 is a side view showing an embodiment of the straddle-type monorail branch device of the present invention. FIG. 3 is a side view (enlarged view of a portion A in FIG. 2) of a conversion device including an electric motor in one embodiment of the straddle-type monorail branch device of the present invention. FIG. 4 is a side view (an enlarged view of a portion B in FIG. 2) of a conversion device in which power is transmitted by a connecting shaft in one embodiment of the straddle-type monorail branch device of the present invention. FIG. 5 is a cross-sectional view (C-C of FIG. 4) of a straddle-type monorail branching device according to an embodiment of the present invention, which is crossed in a longitudinal direction of a branch girder converted by a conversion device in which power is transmitted by a connecting shaft. FIG. FIG. 6 is a side view (an enlarged view of a part D in FIG. 2) of a branch girder provided with a joint for connecting a connection shaft in one embodiment of the straddle-type monorail branch device of the present invention. FIG. 7 is a cross-sectional view (EE cross-sectional view of FIG. 6) of a branch girder provided with a joint for connecting a connecting shaft in a longitudinal direction of a straddle-type monorail branch device according to an embodiment of the present invention. FIG. 8 is a plan view showing a state in which a joint supported by a branch girder of the branching machine converted into the course L2 (left curve) is displaced in a plane in one embodiment of the straddle-type monorail branching machine of the present invention. . FIG. 9 is a plan view showing a manner in which a joint supported by a branch girder of the branching machine converted into the course N (straight) is displaced in a plane in one embodiment of the straddle-type monorail branching machine of the present invention. FIG. 10 is a plan view showing a state in which a joint supported by a branch girder of the branching machine converted into the course R2 (right curve) is displaced in a plane in one embodiment of the straddle-type monorail branching machine of the present invention. .

  Hereinafter, an embodiment of a branching device of a straddle-type monorail track according to the present invention will be described with reference to the drawings.

  First, each direction used for the description is defined. The longitudinal direction of the branching device (longitudinal direction of the branch girder) is the X direction, the turning direction (width direction) of the branching device is the Y direction, and the height direction (vertical direction) of the branching device is the Z direction. Hereinafter, they may be simply referred to as X direction, Y direction, and Z direction.

  FIG. 1 is a plan view showing an embodiment of a straddle-type monorail branch device of the present invention. FIG. 2 is a side view showing an embodiment of the straddle-type monorail branch device of the present invention.

  The branching device 100 is a multi-purpose branching device for a straddle type monorail. The branching device 100 is connected to the fixed-end-side fixed girder 1 and any of the plurality of movable-end-side fixed girder 2a, 2b, 2c, 2d, and 2e by branch girder 3a, 3b, 3c, 3d, and 3e. is there. Thereby, the path can be changed to five paths: a straight path N, a first left curve path L1, a second left curve path L2, a first right curve path R1, and a second right curve path R2. . Note that L2 is bent outward from L1 and R2 is bent outward from R1. The branching device 100 includes branching girders 3a, 3b, 3c, 3d, 3e, trolleys 4a, 4b, 4c, 4d, 4e, 4f, conversion devices 5a, 5b, 5c, 5d, 5e and the like.

  The plurality of branch girders 3a, 3b, 3c, 3d, and 3e connect any one of the plurality of movable end fixed girders 2a, 2b, 2c, 2d, and 2e to the fixed end fixed girder 1. The branch girders 3a, 3b, 3c, 3d, and 3e are connected in series in this order from the fixed end fixed girder 1 in such a manner that the longitudinal direction thereof extends along the X direction. Between the adjacent ends of the fixed end side fixed girder 1 and each of the branch girder 3a, 3b, 3c, 3d, 3e are articulated portions 21a, 21b, 21c, 21d, 21e. Are connected. In the articulation portions 21a, 21b, 21c, 21d, and 21e, there is provided a portion at which an adjacent branch girder overlaps in the Z direction at an end in the X direction of each adjacent branch girder. Further, the articulation portions 21a, 21b, 21c, 21d, and 21e are formed so that the connection can be made by changing the angle to some extent. In each of the articulation portions 21a, 21b, 21c, 21d, and 21e, the branch girder is movably supported in a horizontal plane by the carts 4a, 4b, 4c, 4d, and 4e.

  The carts 4a, 4b, 4c, 4d, and 4e support the joints 21a, 21b, 21c, 21d, and 21e or the vicinity of these joints. Further, the carts 4a, 4b, 4c, 4d, 4e, and 4f are arranged on rails laid along the moving direction (Y direction) of the cart. Thereby, the branch beams 3a, 3b, 3c, 3d, and 3e can be carried in the Y direction. The truck 4a supports an end of the branch girder 3a on the fixed end side fixed girder 1 side. The truck 4f also supports the movable end side fixed girder 2a, 2b, 2c, 2d, 2e side end of the branch girder 3e.

  The diversion devices 5a, 5b, 5c, 5d, and 5e are devices for diverting the branch beams 3a, 3b, 3c, 3d, and 3e in the Y direction to switch the course. In the present embodiment, two conversion devices 5a and 5b are provided on the lower surface of both ends in the X direction of the branch girder 3b, and two conversion devices 5c and 5d are provided on the lower surface of both ends in the X direction of the branch girder 3d. One switching device 5e is provided on the lower surface of the central part in the X direction of the branch girder 3e. Therefore, the conversion devices 5a, 5b, 5c, 5d, and 5e are provided discretely along the X direction.

  FIG. 3 is a side view (enlarged view of a portion A in FIG. 2) of a conversion device including an electric motor in one embodiment of the straddle-type monorail branch device of the present invention. FIG. 4 is a side view (an enlarged view of a portion B in FIG. 2) of a conversion device in which power is transmitted by a connecting shaft in one embodiment of the straddle-type monorail branch device of the present invention. FIG. 5 is a cross-sectional view (C-C of FIG. 4) of a straddle-type monorail branching device according to an embodiment of the present invention, which is crossed in a longitudinal direction of a branch girder converted by a conversion device in which power is transmitted by a connecting shaft. FIG.

  Each of the conversion devices 5a, 5b, 5c, 5d, and 5e has a horizontal axis 11a, a vertical axis 11b, an arm 8, and a roller 9. Furthermore, the conversion devices 5a, 5b, 5c, 5d, 5e also have speed reducers 7a, 7b, 7c, 7d, 7e, respectively.

  The horizontal axis 11a is provided along the X direction. The vertical axis 11b is provided along the Z direction. The speed reducers 7a, 7b, 7c, 7d, 7e are provided between the horizontal axis 11a and the vertical axis 11b, and are mechanisms for reducing the power from the horizontal axis 11a and transmitting the power to the vertical axis 11b. The arm 8 has a horizontal arm 8a and a vertical arm 8b. The horizontal arm 8a is provided at the lower end of the vertical shaft 11b, and is formed to extend from the vertical shaft 11b to both sides in the horizontal direction. The vertical arm portions 8b extend downward from both ends of the horizontal arm portions 8a. Further, the rollers 9 are rotatably mounted around the lower ends of the vertical arms 8b around the Z direction as a central axis. Thus, the two rollers 9 are attached to the tip of the arm 8 with a certain distance.

  The reduction gears 7a, 7b, 7c, 7d, 7e are constituted by gears and the like, and reduce the rotation of the horizontal shaft 11a and transmit it to the vertical shaft 11b. At this time, the respective gear ratios (ratio of the number of rotations of the horizontal shaft 11a to the number of rotations of the vertical shaft 11b) of the reduction gears 7a, 7b, 7c, 7d, 7e are the same as those of the branch beams 3a, 3b, 3c, 3d, 3e. It is determined according to the amount of movement in the Y direction.

  The rollers 9 are arranged between grooves (arm guides) 10 provided on the ground side. That is, the roller 9 engages (fits) with the groove 10 provided on the ground (see FIGS. 4 and 5), and rotates via the reduction gears 7a, 7b, 7c, 7d, 7e. With the rotation of the arm 8), the roller 9 can move inside the groove 10. Here, a plurality (two to four) of grooves 10 are provided for each conversion device as shown in FIG. For example, in the Y direction of the conversion device 5e, the grooves 10 are provided at four positions between the N state and the L1 state, between the L1 state and the L2 state, between the N state and the R1 state, and between the R1 and R2 states. Is provided. The direction of the groove 10 is provided in a direction along the branch girder 3e. The width of the groove 10 is a width in which the roller 9 enters. On the other hand, stoppers 18 are provided outside the movable end side fixed girders 2a and 2e, respectively.

  Each horizontal shaft 11a provided below each of the conversion devices 5a, 5b, 5c, 5d, and 5e is connected in series with a connection shaft 11 (or a joint 12) extending along the X direction (see FIG. 2). The joint 12 connects between the adjacent connection shafts 11 (or the horizontal shafts 11a). Here, a connecting portion 25 (see FIG. 6) is formed between the joint 12 and the connecting shaft 11 (or the horizontal shaft 11a). The connection portion 25 has a function of absorbing relative displacement in the X direction between the joint 12 and the connection shaft 11 (or the horizontal shaft 11a). Further, the connecting portion 25 has a function of absorbing a relative angle (square bend) between the axis of the joint 12 and the axis of the connecting shaft 11 (or the horizontal shaft 11a).

  The electric motor 6 is attached to the lower part of the branch girder 3e arranged on the movable end side fixed girder 2a, 2b, 2c, 2d, 2e side. The electric motor 6 is provided only at one end of the horizontal shaft 11a of the conversion device 5e (see FIG. 3). The horizontal shaft 11a in each of the conversion devices 5a, 5b, 5c, 5d, and 5e is connected via a connecting shaft 11 and a joint 12. Therefore, the rotational force of the electric motor 6 is transmitted to the horizontal shaft 11a of each of the conversion devices 5a, 5b, 5c, 5d, and 5e via the horizontal shaft 11a, the joint 12, and the connection shaft 11.

  FIG. 6 is a side view (an enlarged view of a part D in FIG. 2) of a branch girder provided with a joint for connecting a connection shaft in one embodiment of the straddle-type monorail branch device of the present invention. FIG. 7 is a cross-sectional view (EE cross-sectional view of FIG. 6) of a branch girder provided with a joint for connecting a connecting shaft in a longitudinal direction of a straddle-type monorail branch device according to an embodiment of the present invention.

  No branching device is provided below the branch girder 3c provided at the center in the X direction among the branch girder 3a, 3b, 3c, 3d, 3e constituting the branching device 100. In addition, a conversion device 5b is provided at one end (on the side of the branch girder 3c) of the lower part of the branch girder 3b adjacent to the branch girder 3c (on the fixed end side fixed girder 1 side). And it has the connection shaft 11 connected to the conversion device 5b. A conversion device 5c is provided at the other end (on the branch girder 3c side) of the lower part of the branch girder 3d adjacent to the branch girder 3c (on the movable end side fixed girder side). And it has the connection shaft 11 connected to the conversion device 5c. The connection shaft 11 connected to the conversion device 5b and the connection shaft 11 connected to the conversion device 5c are connected via a joint 12 at a lower portion near the longitudinal center of the branch girder 3c.

  A joint supporting portion 13 for supporting the joint 12 in the Z direction is provided on the lower surface of the branch girder 3c at the central portion in the X direction (see FIGS. 2 and 6). This is because the connecting shafts 11 of the conversion devices 5b and 5c extend from the adjacent branch girders 3b and 3d, and thus are longer than the length of the branch girders 3c in the X direction as a whole. For this reason, the joint 12 connecting the connecting shaft 11 is supported in the Z direction at the center of the branch girder 3c in the X direction.

  The joint support 13 includes a linear guide receiver 16, a linear guide 15, and a joint receiver 14. The linear guide receiver 16 has an upper end fixed to a lower part of the branch girder 3c. The linear guide 15 is provided at a lower end portion of the linear guide receiver 16 and serves as a guide that enables the joint receiver 14 to slide in the Y direction. The joint receiving portion 14 has an upper portion slidably engaged with the linear guide 15 in the Y direction. In addition, a joint holding portion 14a having a bearing that can support rotation of the joint 12 about the X axis with low friction is provided below the joint receiving portion 14. The joint 12 is held by the joint holding portion 14a.

  The joint support 13 supports the center of the joint 12 in the X direction in the Z direction. The X-direction dimension of the connecting shaft 11 connected to one end of the joint 12 and the conversion device 5b is substantially the same as the X-direction size of the connecting shaft 11 connected to the other end of the joint 12 and the conversion device 5c. In addition, the joint support part 13 is arrange | positioned from the vicinity of the center part of the branch girder 3c to the end (R2 switching side) in the Y direction. For this reason, the joint receiving portion 14 is slidable in the range from the vicinity of the center of the branch girder 3c in the Y direction to the end (R2 switching side).

  Next, the operation of the present invention will be described.

  When it is desired to change the course, the rotation of the electric motor 6 is controlled. When the electric motor 6 operates, its rotational force is transmitted to the reduction gears 7a, 7b, 7c, 7d, 7e via the horizontal shaft 11a, the connecting shaft 11, and the joint 12. In the speed reducers 7a, 7b, 7c, 7d, 7e, the speed is reduced to a predetermined number of rotations to rotate each of the vertical shafts 11b in the conversion devices 5a, 5b, 5c, 5d, 5e. Further, the arm 8 connected to the vertical shaft 11b rotates in a horizontal plane.

  First, in the conversion devices 5a, 5b, 5c, 5d, and 5e, the rollers 9 provided at both ends of the arm 8 are engaged with two grooves 10 fixed to the ground, respectively. The rotation of the arm 8 causes one roller 9 to move in the groove 10 and the other roller 9 to move into the groove 10 on the movement destination side, so that the branch beams 3a, 3b, 3c, 3d , 3e is given a displacement in the Y direction. At this time, the branch girders 3a, 3b, 3c, 3d, and 3e move by a predetermined distance together with the carts 4a, 4b, 4c, 4d, 4e, and 4f to complete the conversion of the branching device 100. Thereby, it is possible to change to a route connecting the fixed end side fixed girder 1 and the movable end side fixed girder 2a, 2b, 2c, 2d, 2e.

  For example, when changing from the path state of N in FIG. 1 to the path state of L1, the arm 8 of each conversion device is rotated in the direction of the arrow in FIG. Then, the roller 9 existing in the groove 10 between N and L1 moves in the groove 10. On the other hand, the roller 9 existing in the groove 10 between N and R1 moves to the groove 10 between L1 and L2. This allows the branch beams 3a, 3b, 3c, 3d, 3e to be moved in the switching direction.

  Further, when changing from the track state of L1 to the track state of L2, the arm 8 of each conversion device is rotated in the direction of the arrow in FIG. Then, the roller 9 existing in the groove 10 between L1 and L2 moves in the groove 10. On the other hand, the roller 9 existing in the groove 10 between N and L1 moves to the stopper 18 outside L2. This allows the branch beams 3a, 3b, 3c, 3d, 3e to be moved in the switching direction.

  Further, changes in the transmission mechanism by the connecting shaft 11 and the joint 12 when the course is changed will be described with reference to FIGS.

  FIG. 8 is a plan view showing a state in which a joint supported by a branch girder of the branching machine converted into the course L2 (left curve) is displaced in a plane in one embodiment of the straddle-type monorail branching machine of the present invention. . FIG. 9 is a plan view showing a manner in which a joint supported by a branch girder of the branching machine converted into the course N (straight) is displaced in a plane in one embodiment of the straddle-type monorail branching machine of the present invention. FIG. 10 is a plan view showing a state in which a joint supported by a branch girder of the branching machine converted into the course R2 (right curve) is displaced in a plane in one embodiment of the straddle-type monorail branching machine of the present invention. .

  As shown in FIG. 9, when the branching device 100 configures the N state, which is a straight course, the branch girder 3b, the branch girder 3c, and the branch girder 3d are arranged substantially linearly along the X direction. . For this reason, the connection shaft 11 connected to the conversion device 5b, the connection shaft 11 connected to the conversion device 5c, and the joint 12 connected to these connection shafts 11 are also arranged substantially straight along the X direction. At this time, the position of the linear guide 15 of the joint support portion 13 in the Y direction in the branch girder 3 c is substantially at the center of the linear guide 15. The position of the linear guide 15 in the X direction is located substantially at the center of the branch girder 3b. For this reason, the distance from the linear guide 15 to both ends of the branch girder 3b is L and the same. B in FIG. 9 indicates the distance between the center line of the joint 12 and the center line of the branch girder 3c when the path is configured in the N state.

  As shown in FIG. 8, when the branching device 100 forms the path of L2, which is a left curve, the branch girder 3b, the branch girder 3c, and the branch girder 3d are arranged in a form having a curvature. Therefore, a relative angle occurs between the center line of the branch girder 3b along the X direction and the center line of the branch girder 3c in the X direction. In this case, the joint 12 moves to one end of the branch girder 3c in the Y direction. That is, the joint receiving portion 14 is slid to one end of the linear guide 15 (in the direction of the N state). In this case, a relative angle a ° occurs between the connecting shaft 11 connected to the conversion device 5b and the joint 12, and between the joint 12 and the connecting shaft 11 connected to the conversion device 5c. Here, a ° is a relative angle between the axis of the joint 12 and the axis of the connecting shaft 11. Note that D in FIG. 8 indicates the distance between the center line of the joint 12 and the center line of the branch girder 3c when the track is configured in the L2 state. At this time, the distance D is longer than the distance B.

  As shown in FIG. 10, when the branching device 100 configures the route of R2 that is a right curve, the branching beam 3b, the branching beam 3c, and the branching beam 3d have a curvature opposite to L2 between the branch beams 3b, 3c, and 3d. Will be arranged. For this reason, the joint 12 moves to the other end of the branch beam 3c in the Y direction. That is, the joint receiving portion 14 is slid to the other end of the linear guide 15 (the side in the N state). In addition, C in FIG. 10 indicates the distance between the center line of the joint 12 and the center line of the branch girder 3c when the route is configured in the R2 state. At this time, the distance C is shorter than the distance B.

  When the branching device 100 forms L2 (left curve, see FIG. 8), a relative angle a ° of almost the same magnitude occurs at both ends of the joint 12. Thus, the center line of the joint 12 in the X direction and the center line of the branch beam 3c in the X direction can always be maintained substantially parallel. For this reason, a load twisted by the joint 12 in the XY plane is not applied to the joint supporting portion 13 that supports the joint 12. Thereby, it is possible to provide a simple configuration that allows only the movement of the joint 12 in the Y direction due to the path configuration of the branching device 100.

  Therefore, the joint support 13 includes the above-described linear guide 15 at the lower end of the linear guide receiver 16 along the Y direction, and the joint receiver 14 that engages with the linear guide 15 and slides in the Y direction. A simple configuration can be provided. As a result, it is possible to configure the high-quality branch device 100 that has a small initial cost and does not require a large maintenance cost.

  Even when the branching device 100 is in the state of R2 (right curve, see FIG. 10), the center line in the X direction of the joint 12 and the center line in the X direction of the branch girder 3c can always be maintained substantially parallel. This is because a simple configuration that allows only the movement of the joint 12 in the Y-direction due to the course configuration of the branching device 100 may be provided if the above-described branching device 100 is L2 (left curve, see FIG. 8). Is the same as

  The total length G of the joint 12 and the connecting shaft 11 connected to both ends of the joint 12 when the branching device 100 forms L2 (left curve, see FIG. 8) is the longest. When the branching device 100 forms R2 (right curve, see FIG. 10), the total length F of the joint 12 and the connecting shaft 11 connected to both ends of the joint 12 is the shortest. When the branching device 100 forms an N (straight line, see FIG. 9) course, the total length E of the joint 12 and the connecting shaft 11 connected to both ends of the joint 12 is substantially intermediate between the total length G and the total length F described above. Value. The displacements of the full lengths E, F, and G in the X direction are absorbed by the connection portion 25 (see FIG. 6) between the joint 12 and the connection shaft 11.

  As described above, according to the present invention, with the above-described configuration, a single motor 6 can operate a plurality of converters in the entire branching device 100 to accurately change the course by the branch girder. As a result, the initial cost can be reduced, and the high quality branch unit 100 can be configured. That is, a plurality of motors and a control device related to the synchronous control are not required as compared with the conventional branching device that controls the plurality of motors synchronously. Further, fine adjustment of the control device relating to the synchronous control due to aging is not required, and the high quality switch 100 can be provided with a smaller number of components.

  Furthermore, the present invention can be configured to have a simple configuration in which a load twisted by the joint 12 is not applied.

  Note that the present invention is not limited to the above embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Further, for a part of the configuration of each embodiment, it is possible to add, delete, or replace another configuration.

  For example, in the above-described embodiment, a multi-branch branch that can be selected in five routes has been described. However, the present invention is not limited to this, and the present invention can be applied to a branch for a plurality of routes.

1. Fixed end side fixed girder 2a, 2b, 2c, 2d, 2e ... Movable end side fixed girder 3a, 3b, 3c, 3d, 3e ... Branch girder 4a, 4b, 4c, 4d, 4e, 4f 5c, 5d, 5e Conversion device 6 Electric motors 7a, 7b, 7c, 7d, 7e Reducer 8 Arm 8a Horizontal arm 8b Vertical arm 9 Roller 10 Groove (arm guide)
11 ... connecting shaft 11a ... horizontal shaft 11b ... vertical shaft 12 ... joint 13 ... joint supporting part 14 ... joint receiving part (built-in bearing)
15: Linear guide 16: Linear guide receiver 18: Stoppers 21a, 21b, 21c, 21d, 21e: Articulation part 25: Connection part

Claims (7)

A plurality of branch girders movable in order to switch the course between the fixed end side fixed girder and the plurality of movable end side fixed girder and connected in series in the longitudinal direction;
An electric motor provided below the branch girder,
A connection shaft for transmitting a rotational force from the electric motor,
A joint connected to the connection shaft;
A conversion device for moving the branch girder by the rotational force transmitted from the electric motor,
A straddle-type monorail branching device, comprising: a joint support portion provided at a lower portion near a center in a longitudinal direction of the branch girder to support a vertical position of the joint. The straddle-type monorail branch device according to claim 1,
The straddle type monorail branch device, wherein the joint supporting portion includes a linear guide and a joint receiving portion that supports the joint and is guided by the linear guide and slidable in a switching direction. The straddle-type monorail branch device according to claim 2,
The straddle-type monorail branch device, wherein the joint receiving portion includes a bearing that can support rotation of the joint around an axis with low friction. The straddle-type monorail turnout according to any one of claims 1 to 3,
A straddle-type monorail branch device, wherein longitudinal lengths of the connection shafts on both sides connected to the joint supported by the joint support portion are substantially the same. The straddle-type monorail branch device according to any one of claims 1 to 4,
A connection portion is formed between the connection shaft and the joint, the connection portion has a function of absorbing relative displacement in the longitudinal direction of the joint and the connection shaft, and an axis of the joint and an axis of the connection shaft. A straddle-type monorail switch having a function of absorbing a relative angle formed by the monorail switch. The straddle-type monorail branch device according to any one of claims 1 to 5,
The conversion device includes a horizontal axis to which the rotational force transmitted from the electric motor is input, a vertical axis extending in a vertical direction, a reducer that reduces the rotation of the horizontal axis and transmits the rotation to the vertical axis, A straddle-type monorail branching device comprising: an arm provided at a lower end of a shaft; and a roller which can be disposed between a groove provided on the ground side and is provided at a tip of the arm. The straddle-type monorail branch device according to claim 6,
The gear ratio of the speed reducer is determined according to the amount of movement of the branch girder in the turning direction, and is a straddle-type monorail branch device.

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