JPS6321489Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a locking device for a switch machine that is used as an emergency when the switch machine breaks down.

A switch, which is one type of railway signaling device, is installed at a branch point of a track, and is a device that moves a vehicle to another track by bringing the tongue rail of the switch into close contact with the basic rail. If this switch machine malfunctions and the close contact between the tongue rail and the basic rail is unstable, the tongue rail and basic rail should be locked using a locking device until the failure is recovered for the safety of vehicle operation. ,
Vehicles are allowed to pass by using hand signals, etc.

As shown in FIGS. 1A and 1B, the conventional locking device used in an emergency like this has a pusher 2 engaged with the basic rail 1 side and a hook bolt 4 engaged with the tongue rail 3 side. They were fitted together, then tightened and fixed with a nut 5, and locked using a coupling ring 6 to prevent the nut 5 from loosening.

However, such conventional devices are not installed in a predetermined location in advance, but are assembled and installed manually each time the switch malfunctions, and then removed and stored in another location after the failure is recovered. This was extremely troublesome and required a lot of effort to lock the lock.

This idea was made in view of the above circumstances.
This solves the conventional problems by permanently installing it in a predetermined location, allowing one-touch locking and unlocking of the tongue rail and basic rail, and ensuring secure locking in the locked and unlocked positions. The purpose is to

Hereinafter, one embodiment of the present invention will be described based on FIGS. 2 to 5. Incidentally, the same parts as in FIG. 1 are given the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 11 denotes a main body frame, which fits into the lower end of the basic rail 1 and is fixed to the basic rail 1 with bolts 12 and nuts 13.
A crankshaft 14 is rotatably supported on the bearing portion 11a of the main body frame 11. The crankshaft 14 has a crank pin 15 provided at one end eccentrically with respect to the crankshaft core to which a hook 22 (described later) is rotatably attached, and a crank pin 15 provided at the other end on the side of the end. It has a handle 17 rotatably attached to. A long hole 17a is formed in the middle portion of the handle 17, and is configured to be engageable with a lock latch 18 as a locking means protruding from the main body frame 11 in an inverted U shape. In addition, the crankshaft 1 located within the main body frame 11
4, there is a cam 20 that opens and closes a lock display switch 19 connected to a lock display device (not shown) that displays the locked state of the tongue rail of the hook 22.
is provided. 21 is an outlet for a cable (not shown) connecting the display device and the switch 19.

One end of the hook 22 as a tongue rail locking member is rotatably attached to the crank pin 15 as described above, and the other end located on the opposite side of the basic rail 1 with respect to the end is directed toward the basic rail 1 side. The hook portion 23 is fixed to the concave portion of the hook portion 23, which is made of an abbreviated member that engages and holds the bottom of the tongue rail 3 when the tongue rail 3 is locked. In addition, the upper part of the end of the letter shape is extended to the opposite side of the basic rail 1, so that when the tongue rail 3 is not in close contact with the basic rail 1, that is, when it is in a separated state, the hook 22 can be moved to the locking position. A stopper 24 is used to regulate the Furthermore, a pin 25 is provided on the intermediate wall surface of the hook 22 facing the main body frame 11 to be engaged and guided between guides 11b and 11c provided on the main body frame 11 wall surface when the hook 22 moves as the crankshaft 14 rotates. The pin 25 and the guides 11b and 11c lock the hook portion 2 at the tip of the hook 22 when rotating the crankshaft.
3 constitutes a guide means for guiding the vehicle along a predetermined trajectory.

The operation of the locking device with such a configuration will be explained.

First, when locking the tongue rail 3 in close contact with the basic rail 1, attach the tongue rail 3 to the basic rail 1.
With the handle 17 close to the lock latch 18
Remove it and turn it half a turn to rotate the crankshaft 14 and crank pin 15 by 180 degrees. This crank pin 1
5, the hook 22 in the unlocked position shown in FIG.
5, the pin 25 moves to the right in the figure.
is rotated clockwise using the tongue rail 3 as a fulcrum, and its hook portion 23 engages with the lower part of the tongue rail 3. Furthermore, as the crank pin 15 rotates, the hook 22 moves to the right in the figure, and the hook 22 is moved between the guides 11b, 11c and the pin 25. When the engagement is released, the tongue rail 3 is brought into close contact with the basic rail 1. Then, the half-turned handle 17 is engaged and fixed with the lock latch 18 of the main body frame 11, and the hook 22 is fixed in the locked position shown in the second figure. During this locking operation, the cam 20 attached to the crankshaft 14
The lock display switch 19 is rotated to close the lock display switch 19, and a lock display device (not shown) indicates that the lock is in the locked state.

On the other hand, when unlocking the tongue rail 3 to separate it from the basic rail 1, remove the handle 17 from the lock latch 18 from the locked state shown in the second figure, turn it half a turn in the opposite direction to the locking operation, and rotate the crankshaft 14 and The hook 22 is moved via the crank pin 15 to the unlocked position shown in FIG. That is, when the crank pin 15 begins to rotate, the hook 22 moves away from the tongue rail 3 (moves to the left in FIG. 1) while the crank pin 15 side is lowered, and the hook 22 moves away from the tongue rail 3 (moves to the left in FIG. 1).
The lower part and the hook part 23 are disengaged. Furthermore, the pin 25 on which the crank pin 15 rotates comes into contact with the upper guide 11b of the main body frame 11, and both guides 11
b and 11c. Pin 25 is guide 1
After being guided between 1b and 11c, the hook 22 moves to the left in the figure and rotates counterclockwise about the pin 25, so that the engaging side end is positioned below the tongue rail 3 as shown in Figure 5. Take the unlocked position. Then, the handle 17 is engaged and fixed with the lock latch 18, and the hook 22 is fixed in the unlocked position. In this state, the lock indicating switch 19 is opened as the cam 20 rotates.

As described above, according to the locking device of the present invention, the tongue rail 3 can be locked and unlocked simply by operating the handle, so that it is not only easy to handle, but also can be done in a short time. Therefore, it is most suitable as a locking device to be used as an emergency when a switch machine breaks down.

Note that even if the handle 17 is operated by mistake when the tongue rail 3 is not in close contact with the basic rail 1, that is, when it is in a separated state, the stopper 24 at the tip of the engagement end of the hook 22 will hit the bottom surface of the tongue rail 3, so the hook will 22 never assumes a locked position.

As described above, according to the present invention, the tongue rail locking member is configured to move between the locking and unlocking positions along a predetermined trajectory using the crank mechanism and the guide means. The tongue rail can be locked and unlocked simply by operating the handle to rotate the shaft, making handling extremely easy and significantly reducing work time. In addition, since a locking means is provided to securely lock and fix the tongue rail locking member in the locking and unlocking positions, it is highly safe as it will not be unlocked due to vibrations etc. when vehicles pass. . Furthermore, since it uses a crank mechanism that rotates 180 degrees to take two positions, the device becomes compact.
Therefore, it has extremely high practical value as a locking device for a switch used in an emergency.

[Brief explanation of the drawing]

Figure 1 shows a conventional locking device, where A is a front view and B is a front view.
is a side view, and Figure 2 is a diagram of a locking device according to the present invention.
A front view in the locked state showing the embodiment, FIG. 3 is the second
4 is a rear view of FIG. 2, and FIG. 5 is a front view in an unlocked state. 1... Basic rail, 3... Tongue rail, 11
...Body frame, 14...Crankshaft, 15...
... Crank pin, 22 ... Hook, 23 ... Hook part, 11b, 11c ... Guide, 17 ... Handle, 17a ... Long hole, 18 ... Lock latch, 25 ...
…pin.

Claims (1)

[Claims for Utility Model Registration] (1) A main body frame fixed to the basic rail, a crankshaft rotatably supported by the frame and having an eccentric crank pin, and one end rotatably attached to the crank pin. and has a hook portion that can be engaged with the tongue rail at the other end located on the opposite side of the crankshaft side with respect to the basic rail, and the tongue rail and the hook portion are engaged at a predetermined position on the crankshaft, so that the tongue rail is engaged with the hook portion. Take the locking position where the rail is brought into close contact with the basic rail, and from the predetermined position
A tongue rail locking member that assumes an unlocked position where the engagement between the tongue rail and the hook portion is released when the crankshaft is rotated by 180 degrees, and a wall surface where the tongue rail locking member and the main body frame face each other. A tongue rail locking member consisting of a pin protruding from one side and a guide portion provided on the other side of the facing wall to engage and guide the pin in a predetermined direction when the tongue rail locking member moves. a guide means for guiding the hook portion of the tongue rail locking member to pass through a predetermined trajectory by an engagement guiding operation of the guide portion and the pin when moving between the locking and unlocking positions; A locking device for a switch machine, characterized in that it is provided with locking means for locking at positions corresponding to a locked position and an unlocked position. (2) The tongue rail locking member has a hook portion side end that swings up and down in response to the rotation of the crankshaft, and in the unlocked position, the hook portion side end is below the lower end surface of the tongue rail. A locking device for a switch machine as set forth in claim 1 of the utility model registration claim, wherein the locking device is configured such that the locking device is configured to (3) Utility model registration claim 1, which is provided with a stopper that restricts the movement of the tongue rail locking member to the locked position when the tongue rail is unlocked.
A locking device for a switch machine according to paragraph 2 or paragraph 2. (4) Utility model registration claim No. 1, in which the main body frame has a built-in lock display switch that opens and closes in accordance with the rotation of the crankshaft, and is configured to display whether the tongue rail is locked or unlocked. A locking device for a switch machine according to any one of paragraphs 1 to 3.