JPS584002A - Switching apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a point device used in a nine-branch device, which is equipped with a plurality of movable track girders to moderate the angle of incidence, such as a new traffic stem.

The point device used in this type of branching device simultaneously points multiple movable track girders, so there are many moving parts, and it takes milliseconds to accurately ensure the normal and reverse positions of the point. There is also a koji point to ensure the rigidity of each part of the switch, so locking it in the normal and reverse positions with the switch device is the best way to separate it. Therefore, in general, the forward and reverse positions are usually locked using separate locking devices.

Many methods have been tried for this locking device, but in all cases, after the point device has been moved to the approximate position of normal and reversed positions, the point device and the movable track girder are locked. It is desirable that the pivot be released and the locking device can be used to freely secure and lock the correct position.

The present invention solves the above problems, and the movable track girder and the power source are pivotally supported by a cam mechanism using links, and the cam mechanism provides play S to the cam groove with respect to the cam roller, or the tip of the cam groove. To provide a nine point device in which the movable track girder is formed to have a short length and the movable track girder can move freely by at least a certain amount at the forward or reverse power source position of the point device.

The present invention will be described below with reference to an embodiment of a horizontal rotary branching device circumferential point device of a single-opening two-joint binge joint type having a three-wire track having a guide rail in the center as shown in the drawing. FIGS. 1 and 2 are plan views of the branching device with the switch in the normal and reverse positions, respectively, and FIG. 3 is a side view of FIG. 1.

The movable part arranged between the input side fixed track girder 1 and the branch side fixed track girder 2 is divided into a first movable track girder 3 and a second movable track girder 3.
Movable track girders 4t are provided sequentially. 1st movable track girder 3F1
The second movable track girder 4 is pivotably supported on a center pin 5 protruding from the end of the entrance side fixed track girder 1 so as to be rotatable in the horizontal direction. It is pivotably supported on a protruding center pin 7 and is rotatable in the horizontal direction, and when the tip is turned from the upright position shown in FIG. 1 to the reversed position shown in FIG. 2, the incident angle α is 1. It is relaxed to half of the angle of incidence β of the joint branching device.

The switch device used in this branching device includes a next plate 31 installed at the movable end 6 of the first movable track girder 3, and one end of a cam plate 33 pivotally supported by a pin 32 fixed on the ground side. A cam link 36t, which is connected by a rod 34 and has a cam roller 35 at one end, is fixed to the ground side and pivoted to a pin 37, and a cam roller 35t can be secured to a cam groove 38 formed at the other end of the cam plate 33. while the second
Similarly, a bracket 41 is attached to the movable side end 8 of the movable track girder 4.
A nine-cam groove is provided at the other end of the cam plate 43, and a nine-cam link 46 is provided with a cam roller 45 and is pivotally supported on a pin 42 and connected to one end of a nine-cam plate 43 by a rod 44. 48, the other ends 39, 49 of the cam link 36° 46 are connected by a rod 50, and the other end of the cam link 46 is installed on the ground side. A cam mechanism 30,40 configured to pivot on a piston rod 52 is used. As a result, when the piston rod 52 of the hydraulic cylinder 51 is narrowed from the normal position shown in the first wAK, the cam link 36 rotates counterclockwise in FIG. 1 via the cam link 46 and the rod 50, and the cam roller 45. 35 are engaged with the cam grooves 48.38, respectively, and the cam plate 43.3
3 in the clockwise direction to turn both movable track girders 4.3 into the opposite position shown in FIG. - When stretched, it rolls into the upright position shown in Figure 1.

The present invention is a switch device configured as described above, in which the relationship between the cam roller and the cam groove is free when the branching device is in the normal or reverse position.
Each of the embodiments shown in FIGS. 6 to 6 will be described. Each figure shows the relationship between the cam roller and the cam groove in the upright position. Further, since the cam mechanisms 30 and 40 have the same configuration, for convenience of explanation, the cam mechanism 40 used in the second movable track girder 4 will be explained.

In the embodiment shown in FIG. 4, play is provided between the tip 48a of the cam groove 48 and the cam roller 35, so that even if the hydraulic cylinder 51 is fixed in the normal position, the rod 44, that is, the second movable The track girder 4 can freely move over a distance of ±e.

Another embodiment shown in FIG.
The groove width of the cam groove 48 is set so as to provide a clearance e between 0 and 48, which has the same effect as the embodiment shown in FIG. A play gap occurs.

Still another embodiment shown in FIG.
b, 4'8bt-Cam roller 45 centered on bin 42
The cam plate 43 is formed to be shorter than that in the above embodiment so as to be equal to the radius B in contact with the cam plate 43, which allows the cam plate 43 to rotate freely and move freely from the movable track girder side.
It is also very convenient to add another type of switching device such as a manual one. At this time, the bin 42, the cam roller 45, the bin 4
Since the angle θt-180° formed by The movable track girder 4 starts the transition. This embodiment is not limited to the above, and the lengths of both ends 481) and 48b of the cam groove may be changed, the length of one tip may be made shorter, or the angle θt may be made larger than 180°. It has a wide range of applications, such as allowing the movable track girder to move freely in only one direction.

Although the above description has been made with the switch in the normal position, the same applies to the reverse position, and of course the same applies to the cam mechanism 30 as well.

As described above, by changing the shape of the cam groove and appropriately selecting the relative angle of the link, the present invention achieves pivotal support between the movable track girder and the point power source in either the normal Φ reverse position or both positions. This makes it possible to provide a switch device that can be changed over a wide range, allows the movable track girder to move freely, and is easy to lock, at least in the forward and reverse positions of the switch, which are currently required. The effect is huge.

[Brief explanation of the drawing]

The figure shows a three-wire track, single-opening, two-joint bin-joint type horizontally rotating shunting point device for port placement, which is an embodiment of the present invention. FIG. 2 is a plan view of the reverse position, FIG. 3 is a side view of FIG. 1, and FIG. 4 is a plan view of the reverse position. FIGS. 5 and 6 are plan views showing different embodiments of the cam mechanism of the present invention. l is the fixed orbit girder on the input side, 2 is the fixed orbit girder on the branch side, 3.4
is a movable track girder, 5.7 is a center bin, 30°40 is a cam mechanism, 33.43 is a cam plate, 34.44 is a rod,
35.45 is cam roller, 36.37 is camry/ri, 3
8.48 is a cam groove, and 51 is a hydraulic cylinder.

Claims (1)

[Claims] 1. In a track branching device rotary point device having a plurality of movable tracks llft, the movable track girder and the power source are pivotally supported by a nine-cam mechanism using a link, and the cam mechanism applies force to the cam groove. 10. The movable track mechanism can be moved freely by at least a certain amount in the normal or reverse power source position of the rolling device by giving play S to the cam groove or by forming the tip of the cam groove short. A device that turns into mold.