JP2563293Y2 - Locking device for orbital switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an orbital branching device that converts a movable orbital girder to a fixed orbital fixed girder side or a fixed orbital girder side to branch the orbit, and converts the orbital branching device to a localized or inverted position. The present invention relates to a locking device that locks a movable track girder in a closed state.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7 (A), for example, a movable orbital girder 105 is converted to a fixed orbital fixed girder 101 side or an inverted fixed orbital girder 103 side to branch the orbit. There is known a locking device that locks the movable track girder 105 in a state where the branching device is turned to a position shown by a solid line or an inverted position shown by a two-dot chain line. As shown in FIG. 7B, on the ground side corresponding to the localization and the inversion, elongated insertion holes 107 and 109 formed long in the orbit axis direction, respectively.
The movable track girder 105 is provided with a cylindrical pin 111 that can move up and down. FIG. 7C is a view of the insertion slots 107 and 109 as viewed from above.

[0003] When branching, the movable track girder 105 is converted to the fixed orbital girder 101 side or the fixed orbital girder 103 on the opposite side by a not-shown point device, and then the cylindrical pin 111 is inserted. Locking is performed by inserting into the long holes 107 and 109 for use. The purpose of the locking device is to position the movable track girder 105 and to bear the load acting on the switch. In the above-mentioned conventional one, in order to cope with expansion and contraction due to the temperature of the movable track girder 105, the insertion long holes 107 and 109 are lengthened in the track axis direction, and manufacturing or mounting errors are absorbed by using the cylindrical pin 111. What you want to do.

[0004]

However, in the prior art, in order to withstand a large load, it is necessary to increase the diameter of the cylindrical pin 111. For example,
When ordinary steel is used as the material, the cylindrical pin 11
The contact stress σ at the contact portion 113 between the hole 1 and the insertion slots 107 and 109 is given by the following Hertz formula.

[0005]

(Equation 1)

In the equation, F is the acting force, E is the Young's modulus of the material, B is the contact width, and R is the radius of curvature of the contact portion (the radius of the cylindrical pin 111 in the example shown in FIG. 7). From the above equation, it can be seen that if the contact stress σ is constant, the acting force F can be increased by increasing the radius of curvature R of the contact portion. That is, the cylindrical pins 111 are inserted into the insertion slots 107 and 109.
In the conventional device in which the pin is inserted, a large load cannot be received unless the pin diameter is increased. For this reason, the locking device itself becomes large.

Therefore, the present invention aims to solve the above-mentioned problems, and can sufficiently bear the load acting on the branching device while being small in size, and can sufficiently absorb various errors to reliably position the movable movable girder. An object of the present invention is to provide a locking device for a track turnout.

[0008]

In order to achieve the above object, the present invention has the following structure as means for solving the problem. That is, the orbital branching device that converts the movable orbital girder to the fixed orbit girder side or the fixed orbital girder side to branch the orbit, the movable orbital girder in a state where the orbital girder is converted to the localization or inversion. A locking device for locking, which is provided on the movable track girder, and has a planar abutting portion which is movable in the track axis direction and is opposed to the track axis at right and left sides on both sides of the tip. A lock pin, and a chain-shaped pin receiver which is provided at the above-mentioned fixed position and opposite position, respectively, and which can insert the above-mentioned lock pin between the opposed pin receiving portions, and the pin receiving portion is vertically erected. A locking device for a track branching device, characterized in that both flat contact portions of the inserted locking pin can be brought into contact with the curved surface portions of the pin receiving portions which are formed in opposite shapes. That is it.

[0009]

According to the lock device of the track branching device of the present invention having the above-described configuration, the lock pin is moved in the track axis direction while the movable track girder is in the fixed or inverted position, and the pin receiving portion is moved. When the lock pin is inserted between the lock pins, the two flat contact portions of the inserted lock pin abut against the curved surfaces of the both pin receiving portions to perform locking.

[0010] The contact portion between the two flat contact portions of the lock pin and the curved surfaces of the two pin receiving portions serves as a support point for a horizontal load acting on the movable track girder, for example, when the vehicle passes. At this time, since the pin receiving portion is formed in a vertical or semi-cylindrical shape, the radius of curvature of the curved surface that comes into contact with the planar contact portion of the lock pin can be increased. Therefore, as can be seen from the Hertz's formula described above, the radius of curvature R
Is increased, the acting force F can be increased, and a large load applied to the track branching device can be received without increasing the locking pin side.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic view of a track branching device provided with a lock device according to an embodiment of the present invention. Injection fixed track girder 1
A movable track girder 5 is provided between the movable track girder 3 and the branch-side fixed track girder 3. Branch side fixed track girder 3 is provided with a fixed track girder 3a of the reference line side to become constant <br/> position, and a fixed track girder 3b anti position to the branch line side.

The end 7 of the incident-side fixed track girder 1 is fixed on the ground, and the center pin 9 erected on this end 7 is formed on the rotation-side end 11 of the movable track girder 5. The inserted insertion hole 13 is loosely fitted. In this way, the movable track girder 5
Is rotatable in a horizontal direction about a center pin 9.

1 and FIG. 2 which is a view taken in the direction of arrow A in FIG.
As shown in the figure, a roller 21 is rotatably supported below the movable side end 15 of the movable track girder 5, and a guide rail 25 is laid on a base girder 23 provided on the ground side. I have. Then, when a not-shown driving device is driven, the moving-side end 15 swings by the roller 21 rolling on the guide rail 25 about the center pin 9, and the movable track girder 5 moves. When the moving side end portion 15 of the movable track girder 5 are located fixed track girder 3a side of the constant-position (indicated by a solid line in FIG. 1.) Is referred to as the constant position of the state, while the fixed track girder 3b side of the anti-position When it is located (indicated by the broken line in FIG. 1), it is called an inverted state.

At the movable end 15 of the movable track girder 5, a lock pin 31 forming a part of a lock device 30 is provided, while on the branch fixed track girder 3, the movable track girder 5 is provided. There when moving to a constant <br/> position and counterclockwise positions, the positions corresponding to the locking pin 31, locking pin receiver 33 forming part of the locking device 30 are respectively provided. 2 to 6 show the configuration of the lock device 30.
This will be described with reference to FIG. FIG. 3 shows the lock pin 31 shown in FIG.
4 is a view of the portion of the lock pin receiver 33 viewed from the arrow B, and FIG.

As shown in FIGS. 2 and 3, the lock pin 31 is guided by a pin guide 32 and driven by an electric cylinder 35 so as to be movable in the track axis direction of the movable track girder 5. The electric cylinder 35 driven by the electric motor 34 has a built-in lock detection limit switch 37 and an unlock detection limit switch 39 which are used to control the stop position of the lock pin 31. Further, an overload detection limit switch 41 is also built in, and when an excessive load acting on the electric cylinder 35 is detected, the electric cylinder 35 is stopped to prevent failure.

If the above-described lock detection limit switch 37, unlock detection limit switch 39 and the related control system fail, the electric cylinder 35 does not stop. In this case, the overload detection limit switch 41 is turned off. It is configured to operate and stop the electric cylinder 35.

Further, in the case where the electric operation cannot be performed due to the failure of the electric system such as the failure of the electric motor 34, the manual operation is enabled. When performing manual operation, the motor 34
2 is loosened, and the manual operation shaft 45 shown in FIG. 2 is manually turned by an attached handle (not shown).

The above-described pin guide 32 is formed in a cylindrical shape, and bushes 47 are provided on the inner periphery near both ends. Then, apply grease or the like to the pin guide 3 from outside.
A greasing port 49 communicating from the outer circumference of the pin guide 32 to the inner circumference is formed to supply the inner circumference of the pin guide 32, and a grease nipple (not shown) is attached to an inlet of the outer circumference.

On the other hand, a substantially columnar locking pin 31 is slidably fitted in the cylindrical pin guide 32. The shape of the lock pin 31 will be described with reference to FIG. 5A is a top view of the lock pin 31, FIG. 5B is a side view thereof, and FIG. 5C is a front view thereof. On both sides of the tip end of the lock pin 31, two parallel flat surfaces which oppose each other are formed, and are used as a planar contact portion 50. In this embodiment, the diameter of the cylindrical portion is 110 mm, and the distance between the planar contact portions 50, that is, the width W shown in FIGS. 5A and 5C is 80 mm. And it is formed so that it may taper further toward the front end, and is the insertion portion 51. Also,
A connection hole 53 for connecting to the rod 36 of the cylinder 35 is provided at the rear end.

On the other hand, the lock pin receiver 33 has a support plate 55 as a pin receiver. This support plate 55 is shown in FIG.
As shown in FIG. 6, it has a roughly semi-cylindrical shape, and is provided with a bolt insertion hole 58. Then, it is fixed to an upright mounting plate 57 with a bolt (not shown),
Are arranged to face each other. In this embodiment, FIG.
As shown in (B), the radius of curvature R of the curved surface portion 56 is 2
00 mm. The distance between the two support plates 55 is
The distance (W) between the planar contact portions 50 of the lock pin 31 described above.
= 80 mm).

In order to adjust the distance between the support plates 55, a shim 61 is interposed between the support plate 55 and the mounting plate 57 as necessary. The shim 61 is enabled to subtle adjusted by combining a plurality of different thickness. In this embodiment, two pieces of 2 mm pieces, two pieces of 1 mm pieces, and one piece of 0.5 mm pieces are made up of a total of five pieces, and can be adjusted up to 3.5 mm on one side. ing.

As shown in FIGS. 3 and 4, the lock pin receiver 33 has a positioning member 6 provided at a lower portion thereof.
3 is fixed to the branch-side fixed track girder 3 and positioned.
A circular hole 65 is formed in the positioning member 63, while a long slot 67 is formed in the branch-side fixed track girder 3 in a direction perpendicular to the track axis direction.
Are formed. Then, the fixing bolt 69 (only one is shown in FIG. 3) is screwed through the circular hole 65 and the long hole 67 and fixed.

As described above, the locking pin receiver 33 itself is roughly positioned by being fixed through the circular hole 65 and the long hole 67 by the fixing bolt 69. Further, even if the distance between the two support plates 55 is adjusted or the distance is the same, the relative position between the two support plates 55 is adjusted by the shim 61 so that the locking pin 3 inserted between the two support plates 55 is adjusted.
The two flat contact portions 50 can be brought into contact with the opposing curved surface portions 56 of both the support plates 55.

The localization and reversal lock pin receivers 33 have a localization or reversal completion detection limit switch 7 respectively.
0 is provided correspondingly, and by operating this switch 70, it is possible to detect that the track branching device is at a predetermined position. Next, the operation of the present embodiment will be described.

When the electric cylinder 35 is driven in a state where the movable track girder 5 is in the normal position or the inverted position, the locking pin 3
1 is guided by the pin guide 32 and moves in the orbit axis direction,
From the insertion portion 51, it is inserted between both supporting plates 55.
The two flat abutting portions 50 of the inserted locking pin 31 abut on opposite curved surfaces 56 of the two supporting plates 55. When the lock detection limit switch 37 incorporated in the electric cylinder 35 is operated, the drive is stopped, the lock pin 31 is stopped at a predetermined lock position, and the lock is performed.

The two flat contact portions 50 of the lock pin 31
And the abutting portions of the two supporting plates 55 with the curved surface portions 56 serve as support points for horizontal loads acting on the movable track girder 5 due to, for example, passage of the vehicle. At this time, since the support plate 55 is formed in a vertical or semi-cylindrical shape, the radius of curvature R of the curved surface portion 56 in contact with the planar contact portion 50 of the lock pin 31 can be increased.

For comparison, consider a conventional configuration in which a cylindrical pin is inserted into a long hole. As can be seen from the Hertz's formula described in the section of “Problems to be Solved by the Invention” above, if the radius of curvature R of the contact portion is increased, a larger load can be withstood. In the conventional configuration, the radius of curvature R of the contact portion corresponds to the radius of the cylindrical pin.
It must be a 00 mm cylindrical pin. Radius 20
0 mm, a large cylindrical pin with a diameter of 400 mm,
Further, a mechanism for driving the corresponding long hole and a cylindrical pin having a diameter of 400 mm is required, and the locking device itself becomes considerably large.

On the other hand, according to the locking device of the present embodiment, the locking pin 31 having a cylindrical portion having a diameter of 110 mm may be used, and the supporting plate 55 may be a curved surface portion 5 having a curvature radius R of 200 mm.
It is sufficient that the device 6 has at least a portion in contact with the planar contact portion 50, and the device itself can be made smaller.

Also, with respect to errors such as expansion and contraction in the orbital direction due to a temperature change of the incident-side fixed track girder 1, the branch-side fixed track girder 3, and the movable track girder 5, there is a margin in the longitudinal direction of the lock pin 31. The error in the vertical direction can be absorbed by the margin of the contact surface between the flat contact portion 50 of the lock pin 31 and the curved surface portion 56 of the support plate 55. On the other hand, errors in the direction perpendicular to the track axis can be absorbed by adjusting the thickness of the shim 61, and relative angle errors in the horizontal direction can be absorbed by the curved surface portion 56 of the support plate 55. Further, the relative angular error around the orbital axis is indicated in the cylindrical pin guide 32 by:
This can be absorbed by adopting a configuration in which the substantially columnar locking pin 31 is slidably fitted.

As described above, although the device itself is small, it can sufficiently bear the load acting on the branching device, can absorb various relative errors, and can maintain the accuracy with good accuracy over a long period of time. There is an effect that the positioning of the moving girder can be performed reliably.

As described above, the present invention is not limited to such an embodiment, and can be implemented in various modes without departing from the gist of the present invention. For example, in the above embodiment, the lock pin receiver 33 is directly fixed to the branch-side fixed track girder 3, but may be fixed to a base girder provided on the ground side. Further, in the above-described embodiment, the case of the articulated horizontal rotary orbit splitter is shown, but the present invention can be similarly applied to other types, for example, a traverser type orbit splitter.

[0032]

[Effects of the Invention] As described above in detail, according to the lock device of the track branch device of the present invention, the device itself can sufficiently bear the load acting on the branch device while being small in size, and also absorbs various relative errors. In addition, it is possible to maintain the accuracy with high accuracy for a long period of time, so that the movable movable girder can be reliably positioned.

[Brief description of the drawings]

FIG. 1 is a schematic view of a track branching device provided with a lock device according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a view of the lock pin and the lock pin receiver in FIG.

FIG. 4 is a view of the lock pin and the lock pin receiver in FIG.

5A is a top view of the lock pin, FIG. 5B is a side view thereof, and FIG. 5C is a front view thereof.

FIG. 6A is a front view of a support plate, and FIG. 6B is a top view of the same.

7A and 7B are explanatory views of a conventional technique, in which FIG. 7A is a schematic lock view of a track branching device provided with a conventional locking device, FIG. 7B is a schematic side view thereof, and FIG. FIG.

[Explanation of symbols]

R: radius of curvature 1 ... fixed beam girder on the incident side, 3
... fixed side track girder on branch side, 5,105 ... movable track girder, 1
5: moving end, 21: roller, 25: guide rail,
Reference numeral 30: locking device, 31: locking pin, 32
... Pin guide, 33 ... Lock pin receiver, 35 ...
Electric cylinder, 37 ... Lock detection limit switch,
39: unlock detection limit switch, 50: planar contact portion, 55: support plate, 56: curved surface portion, 61
... Shim, 63 ... Positioning member, 65 ... Circular hole,
67 ... long hole, 107 ... long hole for insertion, 111 ... cylindrical pin,

Claims (1)

(57) [Scope of request for utility model registration] 1. An orbital branching device which turns a movable orbital girder to a fixed orbital fixed girder side or a fixed orbital girder side and branches the orbit. A lock device for locking a track girder, wherein a planar abutment provided on the movable track girder, movable in the track axis direction, and opposite to the track axis orthogonally on both sides of the tip end. A lock pin formed, and a lock pin receiver which is provided at each of the above-mentioned orientation and the opposite position, and which can insert the above-mentioned lock pin between opposed pin receiving portions. It is formed into a vertical kamaboko shape,
A locking device for a track branching device, characterized in that both flat contact portions of the inserted locking pin can be brought into contact with curved surface portions of both pin receiving portions facing each other.