JP3742080B2 - Central rotating girder of the sea suspension type orbit branching device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a central rotating girder of a causal type track branching device, and more particularly, to a central rotating girder disposed at the intersection center of a causal type track branching device used in a new transportation system such as a magnetic levitation railway or a monorail. In particular, the present invention relates to a structure of a central rotating girder that is optimal for a magnetically levitated railway.
[0002]
[Prior art]
The Caesars type track branching device installed on a double track such as a magnetic levitation railway or a monorail is arranged on each track so that four single-opening branch beams are opposed to each other, and fixed between each pair of branch beams in a straight state. Each of the girders is arranged, and a central rotating girder for connecting between a pair of branching girders in diagonal positions at the time of a rolling operation is arranged so as to be rotatable about the intersection (for example, a patent) Reference 1).
[0003]
Since the central rotating girder of the causal type orbit branching device provided in the double track section of the normal orbital interval has a length of about several meters, the entire girder has only to be supported by a rotatable supporting device. However, in a causal type orbit branching device provided at a position where the orbit interval is wide, the central rotating girder becomes long due to restrictions imposed by the length of the diverging beam, the branching angle, the building limit, etc. in each single-opening diverging girder. It was inevitable. As a structure for rotatably supporting such a long central rotating girder, a system is known in which a rotating pin is provided at the center of the girder, and both ends of the girder are supported so as to be movable by arc-shaped guide rails and rollers. (For example, refer to Patent Document 2).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-180406
[Patent Document 2]
Japanese Patent Publication No. 35-7405 [0006]
[Problems to be solved by the invention]
When such a long center rotating girder is formed with a simple girder having rollers at both ends of the girder as described in Patent Document 2, the vertical reaction force acts on the roller bearings at both ends. Since only the reaction force in the horizontal direction acts on the rotation pin at the center of rotation, the span length becomes long and the beam is easily bent. Therefore, in order to reduce the deflection amount of the girder when passing through the train, it is necessary to increase the girder height, so that the whole girder becomes larger and the weight also increases. For this reason, since the reaction force which acts on the substructure which installs a guide rail increases, it will have a great influence also on the structure of a substructure. Furthermore, since the long central rotating girder needs to be divided for transportation, a girder attaching work occurs on the site, and the construction cost also increases.
[0007]
In addition, when the central rotating girder is a two-span continuous girder with the roller support at both ends and the turntable provided on the turning center as a fulcrum, the vertical reaction force acts on the roller support at both ends and the central turntable. However, a horizontal reaction force and a force in the direction of falling of the girder (negative reaction force) also act on the turntable. Therefore, since the span is shorter than the simple girder, the girder height can be lowered, but the reaction force acting on the substructure to install the turntable increases, so in this case also the structure of the substructure It will have a great influence. Furthermore, also in this case, it is necessary to divide and transport the girders, and it is also necessary to perform attachment work on site. Further, in the case of a two-span continuous girder, the behavior of the girder becomes complicated, for example, negative bending occurs on the intermediate fulcrum, and the analysis thereof becomes complicated. In particular, it is difficult to predict the behavior when the temperature changes.
[0008]
In this way, when a long central rotating girder is manufactured with one simple girder or a continuous girder between two spans, the dead load acting on the girder and the train load are applied to the supporting device at the center of the girder and the guide rail support at both ends. Since downward vertical reaction force due to vertical load such as, upward and downward vertical reaction force and horizontal reaction force due to horizontal load such as earthquake, wind, vehicle lateral load, etc. act, fully support these loads, An apparatus structure and a substructure that can smoothly rotate the central rotating girder are required, resulting in a cost increase. In particular, since the track in the magnetic levitation railway is required to have high accuracy, it is necessary to suppress the deflection amount of the central rotating girder, so that the weight of the central rotating girder increases more and it becomes difficult to rotate smoothly.
[0009]
Therefore, the present invention can suppress the increase in the girder height even when the central rotating girder of the cesus type orbit branching device becomes long, can be easily installed, and can be rotated smoothly. The purpose is to provide a rotating girder.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the central rotating girder of the caustic orbit branching device of the present invention is arranged in such a way that the four single-opening branching girders are respectively opposed to the crossover installation part of the orbiting girder of the double track orbit. A fixed girder is arranged between the movable ends of each pair of the branching girders, and a central rotating girder for connecting between the movable ends of each pair of the branching girders in a diagonal position during the rolling operation In the central rotating girder of the Caissus-type orbit branching device arranged so as to be able to rotate, a swivel provided so as to be rotatable about the crossing center and a drive in which the central rotating girder is divided into two by the swivel Girder and driven girder, guide rail for movably supporting each swivel end of the driving girder and driven girder, a rolling device for rotating the driving girder, and split ends of the driving girder and driven girder Is supported in an independent state on the swivel In addition, the rotation movement of the drive beam during the rolling operation is transmitted from the split end portion of the drive beam to the swivel base, and the drive beam is rotated from the swivel base to the split end portion of the driven beam. And a lateral shift prevention device for preventing horizontal displacement between the driving beam and the driven beam on the swivel base.
[0011]
Further, the central rotating girder of the sheathed orbit branching device according to the present invention includes a pair of split end supporting devices that protrude in the swivel direction from both sides in the width direction of the split end portions of the drive and driven girders. Formed by an engagement piece, a receiving member protruding from the upper surface of the swivel base so as to correspond to the engagement piece, and a horizontal pin for connecting the receiving member and the engagement piece, The lateral slip prevention device has a locking protrusion protruding in the swivel direction from each divided end of the drive beam and the driven beam, and a locking member protruding upward from the swivel. One of the locking members is formed so as to sandwich the other.
[0012]
In addition, a box-shaped reinforcing member is provided inside each divided end portion of the drive and driven girders, a box-shaped reinforcing member is provided inside the swivel, and the swivel is The slewing bearing is supported so as to be rotatable, and has a plurality of oil supply portions over the entire circumference of the bearing portion of the slewing bearing.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a front view of a central rotating girder of a causal type orbit branching apparatus showing an embodiment of the present invention, FIG. 2 is a plan view of the caustic type orbit branching apparatus, and FIG. 4 is a partially sectional plan view, FIG. 5 is also a partially sectional side view, FIG. 6 is a plan view of the swivel base, FIG. 7 is a partial cross-sectional plan view showing the internal structure of the swivel base, and FIG. FIG. 9 and FIG. 10 are diagrams for explaining the rolling operation of the caustic type track branching device, and FIG. 9 is a left side from the right side track in the vehicle traveling direction. FIG. 10 shows a state where the connecting line to the track is opened, and FIG. 10 shows a state where the connecting line from the left track to the right track is opened.
[0014]
First, as shown in FIG. 2, the Caesars type orbit branching device is arranged so that the four single-opening branch beams 11, 21, 31, and 41 are opposed to the crossover installation part of the track beam of the double track. The fixed girders 12 and 32 are respectively arranged between the movable ends of the pair of branch girders 11 and 21 and the branch girders 31 and 41 in a linear state, and each pair of the branch girders 11 at a diagonal position during the rolling operation. , 31 and the branch girders 21 and 41 are arranged so that a central rotating girder 51 for connecting the movable ends can be rotated around the intersection. A short connecting girder for connecting the ends of both girder can be provided between the central rotating girder 51 and each branch girder.
[0015]
Each branch beam 11, 21, 31, 41 has joint track portions 13, 23, 33, 43 at the base end portion, and a roller (not shown) provided at the movable end has an arcuate guide rail. By moving along 14, 24, 34, and 44, it is formed to rotate to a predetermined position on the straight-ahead side and the crossing side. Each branch girder is provided with an unillustrated switch device and lock device.
[0016]
The central rotating girder 51 includes a swivel base 52 that is provided so as to be rotatable about the intersection center, a driving girder 53 and a driven girder 54 that are obtained by dividing the central rotating girder 51 by the swivel base 52, and the driving girder. 53 and arcuate guide rails 55 and 56 for movably supporting the swivel ends 53a and 54a of the driven beam 54, a rolling device 57 for rotating the drive beam 53, the drive beam 53 and the driven beam, respectively. The split end portion support device for supporting the split end portions 53b and 54b of the girder 54 in an independent state on the swivel base 52 and for transmitting the rotation operation of the drive girder 53 to the driven girder 54 via the swivel stand 52. 58, and a lateral displacement prevention device 59 for preventing the displacement of the driving beam 53 and the driven beam 54 in the horizontal direction on the turntable 52.
[0017]
The split end support device 58 includes an engagement piece 61 projecting in the direction of the swivel 52 from each side in the width direction of each split end of the driving beam 53 and the driven beam 54, and the engagement from the upper surface of the swivel 52. It is formed by a pair of receiving members 62 projecting to a position where the piece 61 is sandwiched, and a horizontal connecting pin 63 that connects the receiving member 62 and the engaging piece 61.
[0018]
The lateral shift prevention device 59 includes a locking protrusion 64 protruding in the direction of the swivel 52 from each divided end of the driving beam 53 and the driven beam 54 and a pair of locking members 65 protruding upward from the swivel 52. The locking protrusions 64 are sandwiched between the locking members 65 with a slit plate 66 interposed therebetween.
[0019]
Accordingly, in order to connect and fix the divided end portions of the driving beam 53 and the driven beam 54 to the swivel base 52, the engaging pieces 61 are inserted between the receiving members 62, respectively, and the locking protrusions 64 are engaged with the engaging pieces 64. After inserting between the stop members 65, the connecting pins 63 are inserted into the pin holes provided in the engaging pieces 61 and the receiving members 62, and after the pin stopper 67 is attached, a load is not applied to the pin stopper 67. This can be done by pressing the locking member 65 against the locking protrusion 64 and fixing it.
[0020]
In this connected and fixed state, vertical loads such as dead loads and train loads acting on the driving girders 53 and the driven girders 54 and forces in the direction in which the girders collapse (negative reaction forces) are generated between the engaging pieces 61 and the receiving members 62. The horizontal load such as earthquake, wind, vehicle lateral load and the like is supported by the pin support, and is supported by the contact between the locking protrusion 64 and the locking member 65, and the driving beam 53 and the driven beam 54 are connected. It will be in the state hold | maintained on the same axis line. Each split end of the driving beam 53 and the driven beam 54 employs a box structure in which a box-like reinforcing member 68 is provided, and the rotation at the time of the rolling operation is enhanced by increasing the rigidity of the split end. It ensures that power can be transmitted.
[0021]
Similarly, a box-shaped reinforcing member 71 is also provided inside the swivel base 52 to form a box structure. Further, as a means for supporting the swivel base 52 so as to be rotatable, it can withstand harsh use conditions despite being a simple structure. By adopting the slewing bearing 72, the load in each direction acting on the slewing base 52 can be dispersedly supported by the entire slewing bearing 72, and the slewing movement of the slewing base 52 is smoothly performed during the rolling operation. be able to.
[0022]
In addition, since such a central rotation girder 51 has a small rotation angle, for example, less than 15 degrees, the rotation angle of the slewing bearing 72 is smaller than when used for a construction machine that rotates at a large angle. The lubrication condition of the bearing part becomes severe. For this reason, as shown in FIG. 8, oil supply cans 74 are provided at four locations on the outer periphery of the bearing portion 73, and oil supply portions provided at equal intervals from each of the oil supply cans 74 through pipes 75 to a total of 12 locations. The bearing portion 73 is formed so as to be oiled through the valve 76 so that the entire bearing portion 73 can be evenly lubricated even if the rotation angle is small.
[0023]
On the other hand, the turning ends of the drive beam 53 and the driven beam 54 are supported via rollers 81 that move along the guide rails 55 and 56. Further, a lock device 82 is provided on the lower surface of the drive beam 53 and the driven beam 54, and the switch device 57 is provided on the drive beam 53. The rolling device 57 is driven by a driving means 83 including a motor and the like, and a turning arm 84 that turns around a range of about 180 degrees, and a guide member 85 such as a roller provided at the tip of the turning arm 84. And a guide groove 86 that is provided on the lower surface of the drive beam 53 and engages the guide member 85 so as to be movable. The part rotates to a predetermined position.
[0024]
The locking device 82 operates when the driving beam 53 and the driven beam 54 are rotated to predetermined positions, and the locking pin 87 enters and engages with the pin receiver 88, whereby the driving beam 53 and the driven beam 54 are engaged. The swivel end is locked in place. As the guide rails 55 and 56, the rolling device 57, the roller 81, and the locking device 82, those installed in a normal branching girder can be used.
[0025]
The rolling operation of this causal type track branching apparatus is performed as follows. First, as shown in FIG. 9, in the state where the connecting line from the right side track to the left side track of the vehicle traveling direction is opened, the branching girders 11 and 31 are the straight traveling side, and the branching girders 21 and 41 are the crossing side. A central rotating girder 51 is connected between the movable ends of the girders 21 and 41. In this state, as shown in FIG. 10, in order to open the connecting line from the vehicle traveling direction left side track to the right side track, after releasing each locking device and returning the branching girders 21 and 41 to the straight side, In FIG. 10, the branching girders 11 and 31 are switched to the crossover side, and the central rotating girder 51 is rotated by a predetermined angle clockwise in FIG. 9, and the movable ends of the branching girders 11 and 31 are connected by the central rotating girder 51. Each locking device is in a locked state. Further, in the state of FIG. 9 or FIG. 10, by setting each branch beam 11, 21, 31, 41 to the straight advance side, a straight path is opened through the fixed beam 12, 32.
[0026]
The pivoting operation of the central rotating girder 51 is performed by actuating the rolling device 57 and pivoting the pivot arm 84 about 180 degrees counterclockwise in FIG. By the rolling operation of the rolling device 57, the turning end of the drive beam 53 rotates about the turntable 52, and this turning operation is performed on the divided end provided at the divided end of the drive beam 53. It is transmitted to the swivel base 52 via the support device 58, and is transmitted from the swivel base 52 to the driven girder 54 via the split end support device 58 provided at the split end portion of the driven girder 54. The part rotates around the swivel base 52. Thereby, the central rotating girder 51 rotates from the state shown in FIG. 9 to the state shown in FIG.
[0027]
In this way, the central rotating girder 51 is divided into the driving girder 53 and the driven girder 54 at the part of the swivel base 52 provided at the intersection center, and the divided end portions of the driving girder 53 and the driven girder 54 are divided end support devices. 58 and the lateral displacement prevention device 59 are supported on the swivel base 52, and the swivel end is supported on the guide rails 55 and 56 via the roller 81. It can be a simple structure with a short simple girder.
[0028]
By shortening the span length in this manner, the girder height in the central rotating girder 51 can be kept low and the steel weight can be reduced, so that the structure of the substructure can also be simplified. Moreover, since it is a simple girder, complicated behaviors such as generation of negative bending and generation of negative reaction force due to a live load as in a continuous girder are eliminated, and analysis becomes easy. Further, since the driving beam 53 and the driven beam 54 are fixed to the swivel base 52 in an independent state, the on-site attaching work can be omitted, and the on-site work can be shortened and the construction cost can be reduced.
[0029]
Further, as a support structure for the divided end portions of the drive beam 53 and the driven beam 54, a swivel base 52 having a bearing as a swivel bearing 72, a pin support by the split end portion support device 58, and a lateral deviation prevention device 59 are adopted. Furthermore, by adopting a box structure at the split end and the swivel base, it is possible to reliably support an upward and downward vertical reaction force and a horizontal reaction force without backlash, and the resistance by the swing bearing 72 is small and smooth. Rotational motion is obtained. In addition, by providing a plurality of oil supply portions 76 around the entire circumference of the bearing portion of the slewing bearing 72, oil supply to the bearing portion 73 can be easily and reliably performed.
[0030]
From these facts, it is possible to ensure the vertical and horizontal step accuracy of the track rail directly connected to each girder, and it is possible to sufficiently meet the demand for high track accuracy in the magnetic levitation railway. In addition, the swivel ends of the driving beam 53 and the driven beam 54 can adopt the same structure as that of other single-open branch or three-branch branch beams, and the switch device has the same mechanism. Therefore, maintainability can be improved.
[0031]
【The invention's effect】
As described above, according to the central rotating girder of the sea suspension type orbit branching device of the present invention, the central rotating girder of the sea suspension type orbit branching device installed in a double track section having a wide orbit interval such as the vicinity of an island type platform is long. Even if it becomes a thing, since a central rotation girder can be formed by a combination of simple girder with a simple structure, increase in girder height can be suppressed, weight reduction can be achieved, construction is easy, and cost can be reduced. As well as being able to rotate smoothly, high trajectory accuracy can be obtained.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front view of a central rotating girder of a causal type orbit branching apparatus showing an embodiment of the present invention.
FIG. 2 is a plan view of the CESUS type orbit branching device.
FIG. 3 is a partial cross-sectional front view showing a divided portion of a central rotating girder.
FIG. 4 is a partially sectional plan view of the same.
FIG. 5 is a partially sectional side view of the same.
FIG. 6 is a plan view of a swivel base.
FIG. 7 is a partial cross-sectional plan view showing the internal structure of the swivel base.
FIG. 8 is a partial cross-sectional plan view showing an oil supply portion of the swivel base.
FIG. 9 is an explanatory diagram showing a state in which a connecting line from the right track in the vehicle traveling direction to the left track is opened.
FIG. 10 is an explanatory diagram showing a state in which a crossover from the left track to the right track in the vehicle traveling direction is opened.
[Explanation of symbols]
11, 21, 31, 41 ... branch girder, 12, 32 ... fixed girder, 13, 23, 33, 43 ... joint track part, 14, 24, 34, 44 ... guide rail, 51 ... central rotating girder, 52 ... turning 53, drive girder, 54 ... driven girder, 53a, 54a ... swivel end, 53b, 54b ... split end, 55, 56 ... guide rail, 57 ... rolling device, 58 ... split end support device, 59 DESCRIPTION OF SYMBOLS Side shift prevention device 61 ... Engagement piece 62 ... Receiving member 63 ... Connecting pin 64 ... Locking projection piece 65 ... Locking member 66 ... Slip plate 67 ... Pin removal 68 ... Box-shaped reinforcing member , 71 ... Box-shaped reinforcing member, 72 ... Slewing bearing, 73 ... Bearing part, 74 ... Oil supply can, 75 ... Pipe, 76 ... Oil supply part, 81 ... Roller, 82 ... Locking device, 83 ... Driving means, 84 ... times Moving arm, 85 ... guide member, 86 ... guide groove, 87 ... locking pin , 88 ... pin receiving

Claims (7)

Four single-branch branch girders are arranged so as to face each other at the crossover installation part of the double-track orbit girder, and a fixed girder is arranged between the movable ends of each pair of the above-mentioned branch girders in a straight line. In the central rotating girder of a causal type orbit branching device in which a central rotating girder for connecting between the movable ends of each pair of the branching girder in a diagonal position is arranged to be able to rotate around the crossing center at the time of operation. A swivel base provided so as to be pivotable about a pivot, a drive girder and a driven girder obtained by dividing the central rotary girder on the swivel base, and respective swivel ends of the drive girder and driven girder can be moved. A guide rail to be supported on the wheel, a rolling device for rotating the drive beam, and the split ends of the drive beam and the driven beam are supported on the swivel stand independently, and the drive beam is in a rolling operation. The pivoting movement of the drive girder from the split end A split end support device that transmits to the split end of the driven girder from the swivel base and rotates the driven girder, and a horizontal displacement between the drive girder and the driven girder on the swivel base A central rotating girder of a causal type orbit branching device, characterized in that it includes a lateral slip prevention device that prevents the lateral deviation. The split end support device includes a pair of engagement pieces projecting in the swivel direction from both sides in the width direction of the split ends of the driving and driven girders, and the engagement piece from the upper surface of the swivel stand. 2. A central rotating girder of a sheathed orbit branching device according to claim 1, wherein said central rotating girder is formed by a receiving member projecting correspondingly and a horizontal pin connecting said receiving member and said engaging piece. . The lateral shift prevention device includes a locking protrusion protruding in a swivel direction from each divided end portion of the drive beam and the driven beam, and a locking member protruding upward from the swivel. 3. The central rotary girder of the caustic type track branching apparatus according to claim 1 or 2, wherein either one of the locking members is formed so as to sandwich the other. 4. The central rotating beam of a caustic type track branching device according to claim 1, wherein a box-shaped reinforcing member is provided inside each divided end portion of the driving beam and the driven beam. 5. 5. The central rotating girder of the caustic type track branching device according to claim 1, wherein the swivel base is provided with a box-shaped reinforcing member therein. 6. The central rotating girder of a causal type orbit branching device according to claim 1, wherein the swivel base is rotatably supported by a swivel bearing. The central rotating girder of a sheathed orbit branching device according to claim 6, wherein the slewing bearing has a plurality of oil supply portions over the entire circumference of the bearing portion.

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