JPS6119972Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a derailment prevention device for a bogie that can prevent derailment due to vertical and lateral movement while the bogie is in a running state.

For example, high-level radioactive liquid waste from used nuclear fuel for nuclear power generation is produced by dispersing the calcined body into molten glass in a metal container, injecting it into a metal container, transporting it to a designated location on a trolley, and welding the lid of the metal container. It is now being stored in engineering storage. However, as mentioned above, the metal container is transported to a predetermined position with the lid open, so if the cart derails from the rail by moving vertically or horizontally due to an uneven load or an earthquake, etc. There is a risk that the molten glass inside the metal container will leak out and develop into a major accident that cannot be controlled.

Therefore, as derailment prevention devices that can ensure the running performance of the bogie and prevent derailment, conventionally, 1) derailment prevention mechanism using fluid pressure such as oil or air, 2) electric type screw type derailment prevention device There are mechanisms, etc.

However, in the configuration 1) above, the fluid supply device becomes quite complicated from the viewpoint of running performance of the truck, and in the configuration 2) above, if a screw becomes jammed, it may become impossible to repair. be. Moreover, in the configurations 1) and 2) above, the mechanism is complicated, making it difficult to repair by remote control, and since the drive device of the derailment prevention mechanism is driven separately, it may malfunction and cause a major accident. There is, and furthermore,
In the case where it becomes necessary to transport the bogie by crane for repair, there are various drawbacks to the extent that if the release mechanism of the derailment prevention mechanism becomes unable to be released due to a failure, it becomes impossible to deal with the problem.

This invention was made in view of the above-mentioned drawbacks, and its purpose is to provide a derailment prevention pawl and a position regulating arm for the derailment prevention pawl near at least one wheel on the underside of the bogie body, and to prevent derailment prevention by a combination of these. The object of the present invention is to provide a derailment prevention device for a bogie that has an extremely simple configuration, is easy to operate, does not require a drive device, and can reliably prevent derailment while ensuring running performance. be.

This invention will be explained below with reference to an embodiment shown in the drawings.

Fig. 1 is an enlarged front view of the vicinity of one wheel of the bogie according to this invention, and Fig. 2 is a side view of Fig. 1. There are versions with the same configuration, but below:
For simplicity, only one configuration will be described.

A pair of brackets 4a and 4b are arranged in parallel near the wheel 2 on the lower surface 1a of the truck body 1 so as to be perpendicular to the rail 3 from the outside of the wheel 2, respectively.

A derailment prevention pawl 5 having a substantially inverted angle shape is inserted between the brackets 4a and 4b, and a through hole 5a drilled in the bent portion is inserted between the brackets 4a and 4b.
The derailment prevention pawl 5 is loosely fitted onto a pin 6 provided at the lower end of the derailment prevention pawl 5, and is able to swing vertically around the pin 6. A claw portion 5b is formed at the lower end of this derailment prevention claw 5, and can move in and out of the lower side of the wheel mounting surface 3a of the rail 3 in a direction perpendicular to the rail 3 during rocking, while the upper end A suitable curved surface 5c is formed and extends near the lower surface 1a of the truck body 1. Further, a gap adjustment bolt 8 is provided between the brackets 4a and 4b via a support member 7, and the tip of the gap adjustment bolt 8 comes into contact with the back surface of the upper end side of the derailment prevention claw. The gap between the lower end claw portion 5b and the rail 3 below the wheel mounting surface 3a is adjustable. Further, a compression spring 9 constituting a first biasing mechanism is fitted to the tip of the clearance adjustment bolt 8, and the lower end claw portion 5b of the derailment prevention claw 5 is moved in the direction away from the rail 3. It is constantly energized.

On the other hand, between the brackets 4a and 4b, a pair of support plates 10a and 10a of the operating lever 10 are located on both sides of the derailment prevention pawl 5, and the bracket 4 is
It is attached to be able to swing up and down by a pin 11 provided between a and 4b. The support plate 10
a and 10a are approximately inverted dog-shaped, and their tips extend in front of the brackets 4a and 4b toward the lower surface 1a of the truck body 1 and are connected by a pin 12, and the outer circumference of the pin 12 has a A rotating ring 13 is fitted so as to engage with the lower part or curved surface 5c of the upper end of the derailment prevention claw 5. Also,
In the truck body 1, a rod 14 constituting a second biasing mechanism is inserted into a recess 1b provided in the truck body 1. This rod 14 is inserted into the recess 1
By means of a compression spring 15 fitted in the inside of the support plate 10a, a connecting plate 16 attached to the rear end of the support plates 10a, 10a downward at a predetermined angle is connected from above, that is, the rotating ring 13 is connected to the lower surface 1a of the bogie main body 1. It is biased in the direction.

In the above configuration, in order to place the truck body 1 on the rail 3, when the truck body 1 is lifted by a crane (not shown) or the like, the connecting plate 16 of the operating lever 10 provided for each wheel 2 is connected to the compression spring 15. It resists the urging force of and pulls up to the lower surface 1a of the trolley body 1. As a result, the actuating lever 10 is moved to the pin 11.
The rotary ring 13 swings counterclockwise around the center, and the rotating ring 13 separates from the lower surface 1a of the truck body 1, as shown by the dashed line in FIG. As the actuating lever 10 moves, the derailment prevention pawl 5 swings counterclockwise around the pin 6 due to the biasing force of the compression spring 9.
As shown by the dashed line in the figure, the lower end of the upper end of the derailment prevention pawl 5 engages with the rotating ring 13 of the actuating lever 10. Therefore, a predetermined distance is maintained between each wheel 2 and the lower end claw portion 5b of the derailment prevention claw 5, and the bogie body 1 can be easily placed on the rail 3.

With the trolley body 1 placed on the rail 3,
When the pulling force of the actuating lever 10 is released, the actuating lever 10 pulls the pin 1 due to the biasing force of the compression spring 15.
The rotating body 13 swings clockwise around the center 1 and comes into contact with the lower surface 1a of the truck body 1.

As the operating lever 10 moves, the upper end of the derailment prevention pawl 5 is pushed upward by the rotating ring 13, and the derailment prevention pawl 5 swings in the timekeeping direction against the biasing force of the compression spring 9. approaches rail 3. Then, as the operating lever 10 and the derailment prevention pawl 5 swing, the rotating ring 13 moves from the lower part of the upper end of the derailment prevention pawl 5 to the curved surface 5c. Here, the curved surface 5c of the derailment prevention pawl 5 is a suitable curved surface, that is, a curvature such that its imaginary extension intersects in front of the trajectory drawn by the center of the rotating ring 13. For this purpose, the derailment prevention claw 5
is further urged in the clockwise direction, and at the same time, its back surface abuts the tip of the clearance adjustment screw 8, and the lower end claw portion 5b is located below the wheel mounting surface 3a and in contact with the rail 3 for clearance adjustment. It is positioned with a pre-adjusted gap using screws 8.

Therefore, the trolley body 1 is in a freely traveling state,
Derailment can be prevented against unbalanced loads applied to the bogie body 1 and earthquakes. Moreover, due to the load being applied to the lower end claw portion 5b of the derailment prevention claw 5 during an uneven load on the bogie body 1 or vertical or horizontal movement during an earthquake, the rotating body 13 of the operating lever 10 is
The derailment prevention pawl 5 is more firmly inserted between the lower surface 1a of the derailment prevention pawl 5 and the curved surface 5c of the derailment prevention pawl 5, and the derailment prevention pawl 5 is completely locked.

Next, to release the derailment prevention claw 5, use the operating lever 1.
By raising 0, the rest can be easily performed by the same operation as above.

In the above embodiment, the derailment prevention pawl 5 is provided for each wheel 2, but it may be provided only for appropriate wheels 2 depending on the use of the bogie body 1. Furthermore, if the connecting plates 16 of the operating levers 10 provided for each wheel 2 are connected to each other on the same side, the operating levers 10 can be easily operated.

As described above, the derailment prevention device for a bogie according to this invention includes a derailment prevention claw, an operating lever, a first
It has an extremely simple configuration consisting of a second biasing mechanism, etc., and there is no need to provide a separate drive device, and there is no possibility of causing an accident due to malfunction. Furthermore, when the bogie is placed on the rail, the derailment prevention function is automatically activated, ensuring sufficient reliability as an anti-earthquake cable, and at the same time ensuring the running performance of the bogie.
In addition, the derailment prevention function can be automatically and easily released when the bogie is lifted from the rail.
Therefore, it can be used as a cart for radioactive waste disposal to ensure safety.

[Brief explanation of the drawing]

FIG. 1 is an enlarged front view of the vicinity of one wheel of a truck according to this invention, and FIG. 2 is a side view of FIG. 1. 1...Body body, 2...Wheels, 3...Rails,
4a, 4b...Bracket, 5...Derailment prevention claw,
5b...lower end claw portion, 5c...curved surface, 8...gap adjustment screw, 9...compression spring, 10...operating lever,
13... Rotating ring, 14... Rod, 15... Compression spring.

Claims (1)

[Scope of utility model registration request] Near at least one wheel on the bottom surface of the truck body,
The center part of the derailment prevention pawl is swingably attached so that the lower end pawl can go in and out in the orthogonal direction below the wheel mounting surface of the rail, and the lower end pawl and the lower side of the wheel mounting surface a gap adjustment mechanism for adjusting the gap between the lever and the rail; and a first biasing mechanism for constantly biasing the derailment prevention claw in the direction in which the lower end claw moves away from the rail; The derailment prevention pawl is movably attached so that one end thereof can be engaged with the upper end of the derailment prevention pawl, and the lower end pawl of the derailment prevention pawl is restricted to a position near the rail below the wheel mounting surface, and the above-mentioned operation A derailment prevention device for a bogie, characterized in that a second biasing mechanism is provided that constantly biases the one end side of the lever toward the lower surface of the bogie body.