JPS6339722B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a point device using a movable track girder at the branching part of a three-wire track having a running guide rail in the center, such as in an new transportation system, and in particular, the present invention relates to a point device that uses a movable track girder at the branching part of a three-wire track having a running guide rail in the center, such as in an new transportation system. This invention relates to a switch device that can be easily locked using a locking device.

As shown in Japanese Patent Publication No. 47-18681, for example, a switch device used in this type of branching device has a pinion fixed to a shaft driven by a power source motor, and a rack rail connected to the pinion. There is a mechanism in which a plurality of movable track girders are moved by changing the gear ratio to give an arbitrary range of movement to ensure normal and reverse positions.

However, this device uses pinions and racks to move multiple movable track girders to maintain normal and reverse positions, so there is no play and a high level of precision is required. Therefore, if the accuracy is poor, it is difficult to lock using a separately provided locking device.

Therefore, the present invention provides a certain amount of play in the left and right direction when the movable track girder comes to the normal or reverse position, and utilizes that play to move the track girder to the normal or reverse position.
Facilitates accurate alignment of the antiversion and therefore
The object of the present invention is to provide a switch device that can be easily locked using a separately provided locking device.

In order to achieve the above object, the present invention provides a point device that uses a movable track girder at the branch part of a three-wire track having a running guide rail in the center, and a cylinder for moving the movable track girder and the movable track girder. a cam plate that is pivoted to the ground side at one point and has a cam groove at one end and a rod connected to the movable track girder at the other end; The movable track girder has a cam roller that engages with a cam groove, the other end of which is connected to a cam link connected to the cylinder, and the movable track girder can freely move by more than a certain amount in the normal and reverse positions of the movable track girder. like,
The cam plate is characterized in that the cam groove of the cam plate is provided with a clearance for the cam roller, or the length of the cam groove is formed to be shorter than the length that allows the engagement state with the cam roller to be maintained.

Hereinafter, the present invention will be described as 3 having a guide rail in the center of the figure.
An embodiment of a single-opening two-joint pin joint type horizontal rotary branch point device for a wire track will be described. Figures 1 and 2 are plan views of the branching device in the normal and reverse positions, respectively;
The figure shows a side view of FIG. 1.

The movable part disposed between the entrance side fixed orbit girder 1 and the branch side fixed orbit girder 2 is divided, and a first movable orbit girder 3 and a second movable orbit girder 4 are sequentially provided. The first movable track girder 3 is pivotally supported on a center pin 5 protruding from the end of the fixed track girder 1 on the entrance side, and is rotatable in the horizontal direction. It is pivotably supported on a central pin 7 protruding from the movable side end 6 of the holder so as to be rotatable in the horizontal direction, and can be changed from the upright position shown in FIG. 1 to the reversed position shown in FIG. Then, the angle of incidence α is relaxed to half of the angle of incidence β of the one-joint branching device.

The switch device used in this branching device includes a bracket 31 provided 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 groove 38 is formed at the other end of the cam plate 33 by connecting a cam link 36 with a cam roller 35 at one end to a pin 37 fixed on the ground side.
The cam roller 35 can be engaged with the bracket 4 at the movable end 8 of the second movable track girder 4.
1 and is pivotally supported on a pin 42.
The cam roller 45 is connected to one end of 3 with a rod 44.
A cam link 46 with
The other ends 39, 49 of the cam link 46 are connected by a rod 50, and the other end of the cam link 46 is configured to be pivotally supported on a piston rod 52 of a hydraulic cylinder 51 as a power source provided on the ground side.
Use 40. As a result, the piston rod 52 of the hydraulic cylinder 51 is moved from the normal position shown in FIG.
When retracted, the cam link 36 rotates counterclockwise in FIG.
8, respectively, and rotates the cam plates 43, 33 clockwise to move both movable track girders 4, 3 through rods 44, 34 and brackets 41, 31, respectively, to the opposite position shown in FIG. If the piston rod 52 is extended again, the piston rod 52 is moved to the normal position shown in FIG.

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 embodiment shown in the figure 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.

The embodiment shown in FIG.
A clearance e is provided between the rod 44 and the cam roller 45, so that even if the hydraulic cylinder 51 is fixed in the normal position, the rod 44, that is, the second movable track girder 4, can freely move a distance of ±e.

Another embodiment shown in FIG.
The groove width is set to have the same effect as the embodiment shown in FIG. 4, and even in the middle of the turn, there is a play of ±e in the movement of the movable track girder.

In yet another embodiment shown in FIG. 6, both tips 48b, 48b of the cam groove 48 are formed shorter than those in the previous embodiments so as to be equal to the radius R that contacts the cam roller 45 with the pin 42 as the center. This allows the cam plate 43 to rotate freely and move freely from the movable track girder side, making it convenient to add another type of point device such as a manual one. Also, at this time, since the angle Θ formed by the pin 42, cam roller 45, and pin 47 is made smaller than 180 degrees, when the piston rod 52 of the hydraulic cylinder 51 is retracted to start rolling to the opposite position, the cam roller 4
5 is pivotally supported in the cam groove 48, and the second movable track girder 4 starts rolling. This embodiment is not limited to the above, but the lengths of both ends 48b, 48b of the cam groove may be changed, the length of one tip may be made shorter, or the angle Θ may be made larger than 180°. This has a wide range of applications, such as allowing the movable track girder to move freely in only one direction.

Although the above explanation has been made with the switch in the normal position, the same applies to the reverse position, and the cam mechanism 30
Of course, the same applies to .

As described above, the present invention includes a movable track girder and a cylinder for moving the movable track girder, which is pivoted on the ground side at one point, has a cam groove at one end, and has a rod connected to the movable track girder at the other end. and a cam link that is pivotally supported on the ground side at one point, has a cam roller at one end that engages with a cam groove of the cam plate, and has the other end connected to the cylinder, and is connected to the movable track girder. In order to allow the movable track girder to move freely by more than a certain amount in the normal and reverse positions, the cam groove of the cam plate is provided with a clearance relative to the cam roller, or the length of the cam groove is adjusted to the engagement state with the cam roller. Since the length is shorter than the length that can maintain the cam groove of the cam plate and the cam roller of the cam link without operating the cylinder, after the movable track girder is aligned with the approximately normal and reverse positions by operating the cylinder, the cam groove of the cam plate and the cam roller of the cam link can be connected without operating the cylinder. The play is utilized to accurately align the movable track girder in the normal and reverse directions, and in this state it can be locked using a separately provided locking device, making it extremely easy to lock. Since the lateral load when the vehicle passes is received by a separate locking device, the movement mechanism between the forward and reverse positions can have a simple structure as described above, and the play allows for high precision. is never required. Also, since the configuration is as described above, the shape of the cam groove can be changed,
By appropriately selecting the relative angles of the links, the pivot between the movable track and the cylinder can be varied over a wide range in either or both of the normal and reverse positions.

[Brief explanation of drawings]

The figure shows a single-opening two-joint pin joint type horizontally rotating switch device for a three-wire track, which is an embodiment of the present invention. A plan view of the state, Fig. 2 is a plan view of the reversed state, Fig. 3 is a side view of Fig. 1, Fig. 4,
FIGS. 5 and 6 are plan views showing different embodiments of the cam mechanism of the present invention. 1 is a fixed orbit girder on the input side, 2 is a fixed orbit girder on the branch side, 3 and 4 are movable orbit girders, 5 and 7 are center pins, 3
0 and 40 are cam mechanisms, 33 and 43 are cam plates, 34 and 44 are rods, 35 and 45 are cam rollers, 36 and 37 are cam links, 38 and 48 are cam grooves, and 51 is a hydraulic cylinder.

Claims (1)

[Claims] 1 In a point device that uses a three-wire track with a running guide rail in the center and a movable track girder at the branch part,
The movable track girder and the cylinder for moving the movable track girder are connected at one point to a cam plate which is pivotally supported on the ground side at one point and has a cam groove at one end and a rod connected to the movable track girder at the other end. A cam roller that is pivotally supported on the ground side, has a cam roller that engages with a cam groove of the cam plate at one end, and is connected to a cam link that is connected to the cylinder at the other end, and is located in the normal and opposite positions of the movable track girder. In order to allow the movable track girder to move freely by a certain amount or more, the cam groove of the cam plate should have a clearance with respect to the cam roller, or the length of the cam groove should be shorter than the length that allows the cam groove to remain engaged with the cam roller. A switch device characterized by the following: