JPH089116Y2 - Crane rescue equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a rescue device for a crane.

"Prior art" Generally, if the overhead traveling crane is installed in a bad working environment such as a cell room or a high temperature room where radioactive materials are handled, if the crane breaks down, go to the work room. The entry is often limited, and repairs have been performed by a method such as an operator operating a manipulator in the work chamber.

"Problems to be solved by the invention" However, in the case of installing a manipulator over the entire working range of the crane working room, there is a problem that the entire equipment becomes very large and the cost becomes high. It was

The present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is to provide a device capable of reliably assisting horizontal movement of a crane.

"Means for Solving the Problem" The crane rescue device of the present invention is a crane rescue device having a traveling platform horizontally moving on a track in a work chamber and a trolley platform mounted on the traveling platform, A linear body that travels in the work chamber along the track and is connected to the traveling mount by a first drive source provided outside the working chamber, and an input that is provided on the traveling mount and extends toward the side wall of the working chamber. A drive mechanism that drives the trolley base by rotation of a shaft, a drive shaft that is arranged on the side wall and moves through the side wall to the inside of the work chamber and is connectable to the input shaft, and outside the work chamber that is connected to the drive shaft. And a second drive source which is disposed at.

[Operation] According to the crane rescue device of the present invention, the linear body is driven by the first drive source while the linear body is connected to the traveling frame, and the linear frame is pushed by the linear body. The traveling frame can be moved in the traveling direction of. Therefore, the traveling platform of the crane can be moved in any direction by rotating the first drive source in the forward and reverse directions.

Further, by moving the traveling mount as described above, the input shaft of the drive mechanism provided on the traveling mount is moved to the position where the drive shaft is provided on the side wall of the working chamber, and then the driving shaft is moved to the inside of the working chamber. When the second drive source is operated in the state where the trolley base is moved to the input shaft and connected to the input shaft, the trolley base can be moved by rotating the input shaft to operate the drive mechanism.

The crane rescue device of the present invention can rescue the horizontal movement of the crane as described above.
In addition, since all the drive sources that normally require regular maintenance are located outside the work room, this maintenance work can be performed in a timely manner and can reliably function when the crane fails.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS.

FIGS. 1 and 2 are a side view and a plan view of a vitrified solids inspection facility to which the crane rescue device of the present invention is applied, and FIG. 3 is a sectional view taken along line III in FIG.

In FIG. 1, reference numeral 1 is a cell chamber (working chamber) formed of a shielding wall, and the vitrified body K that is transported by the transport carriage D and is inspected is a carry-in port provided at the bottom of the cell chamber 1. It is carried in from 1a, transferred by a crane 2, stored in a solidified body receiver 3a of a solidified body extracting device 3, and inspected.

The crane 2 is placed on the step portion 1b formed on the side wall of the cell chamber 1 through the rail guides 4, 4 (tracks), and the length of the cell chamber is increased by a drive mechanism (not shown) provided in the cell chamber. Traveling platform 5 that moves horizontally in the direction, and this traveling platform 5
A trolley stand 7 which is placed on top of the rail mounts 6 and 6 and which is horizontally moved in the width direction of the cell chamber 1 with respect to the traveling base 5 by a drive mechanism (not shown) provided on the traveling base 5. Have. The crane 2 lifts and lowers the solidified body suspending tool 9 suspended from the trolley base 7 by the hoisting mechanism 8 on the trolley base 7.

Next, a crane rescue device provided in the vitrified solids inspection facility will be described.

The crane rescue device includes chains 11 and 11 (striated bodies) which circulate in the longitudinal direction of the cell chamber 1 on both sides of the traveling platform 5 inside the cell chamber 1 by a first drive source 10 provided outside the cell chamber. Abutting tools 12a, each of which protrudes from the chain 11 and whose side surface comes into contact with the traveling base 7 by the circulation,
12b and.

Here, the chain 11 is a sprocket 13 arranged outside the cell chamber 1 and rotated forward and backward by a first drive source 10 via a shaft 10a, and a sprocket 14 rotatably arranged in the cell chamber 1, It is wound around 15, 16 and 17, respectively, and passes through the through holes 1c and 1d formed in the wall of the cell chamber 1 to circulate. The chain 11 is movably supported on the lower side of the traveling base 5 by sprockets 18 rotatably attached to both sides of the traveling base 5, and travels on a fixed track with respect to the traveling base 5. It is supposed to do.

As shown in FIG. 4, the abutment tools 12a, 12b are attached to the traveling base 5 side of one link constituting the chain 11, and the side surfaces thereof are formed so as to project from both sides of the traveling base 5. It comes in contact with the protrusion 5a. It should be noted that these abutment tools 12a, 12b are provided at the same position in each sprocket 15 at a distance smaller than that between the sprocket 16 and the sprocket 16.

Further, a drive mechanism 21 for driving the trolley stand by rotation of an input shaft 20 extending toward one longitudinal side wall 1d of the cell chamber 1 is provided on the traveling platform 5 of the crane rescue device. The drive shaft 22 that is movable through the wall 1d to the inside of the cell chamber and is connectable to the input shaft 20 is provided in the
The drive shaft 22 is rotated by a second drive source 23 arranged outside the cell chamber.

Here, the drive mechanism 21 includes the input shaft 20, the chains 26 and 26, both ends of which are fixed to the trolley base 7 and which are wound around the sprockets 24 and 25 and circulate in the moving direction of the trolley base 7, and the input shaft 20. Of the gearbox 28 for transmitting the rotation of the sprocket 24 to the shaft 27 to which the sprocket 24 on one side is fixed.
29a is fixed.

The second drive source 23 is arranged outside the cell chamber 1 to rotate the drive shaft 22 in the forward and reverse directions, and is fixed to a mounting plate 30 that is horizontally movable toward the cell chamber 1 side. ing. The mounting plate 30 is driven by the cylinders 31 and 31 to move forward and backward toward the cell chamber 1 side, whereby the drive shaft 22 moves forward and backward together with the second drive source 23, and these move forward. In particular, the other side 29b of the shaft joint fixed to the tip of the drive shaft 22 is engaged with one side 29a of the shaft joint fixed to the input shaft 20 so that the drive shaft 22 and the input shaft 20 can be connected. It has become.

According to the crane rescue device configured as described above,
The first drive source 10 is operated to rotate each chain 11 in the clockwise direction in FIG. 1 so that the abutment tool 12a is brought into contact with the projection 5a of the traveling frame 5, and each chain 11 is rotated in the same direction. This allows the abutment tool 12a to push the traveling platform 5 to move the traveling platform 5 to the left in FIG. Further, by rotating the first drive source 10 in the reverse direction to rotate each chain 11 in the counterclockwise direction in FIG. 1, the traveling base 5 is similarly moved to the right side in FIG. 1 by using the abutment tool 12b. The traveling base 5 of the crane can be moved in any direction by rotating the first drive source 10 in the forward and reverse directions.

Further, by moving the traveling pedestal 5 as described above, the input shaft 20 of the drive mechanism 21 provided on the traveling pedestal 5 is moved to the position where the driving shaft 22 is arranged in the one side wall 1d of the cell chamber 1. After that, the drive shaft 22 is moved to the cell chamber 1 by the cylinder 31.
When the second drive source 23 is operated in a state where the trolley base is moved inward and connected to the input shaft 20, the input shaft 20 is rotated to operate a drive mechanism to move the trolley base in both directions. .

In other words, this crane rescue device can rescue the horizontal movement of the crane as described above, and the drive sources 10 and 23 that normally require regular maintenance are the cell chamber 1
Since it is located outside, this maintenance work can be carried out in a timely manner to ensure reliable functioning in the event of a crane failure.

That is, according to the crane rescue device of the present embodiment, when the horizontal movement function of the crane is broken, the rescue device is used to temporarily move the crane horizontally to reliably isolate the radioactive waste, The failure can be repaired by non-remote work. Therefore, it is not necessary to provide a manipulator or the like for remote maintenance operation in the inspection facility for the radioactive waste vitrified body, and there is an effect that these facilities are very inexpensive and the maintenance work is easy.

In the above embodiment, the linear member in the present invention is a chain, but the present invention is not limited to this, and may be a belt or rope, for example. Further, in the above-mentioned embodiment, the filamentous body is made to run by circulating it, but for example, the filamentous body is stretched by winding both ends around a drum arranged outside both ends of the cell chamber 1. The filament may be run by pulling it from the drum and winding it around the other drum.

[Effect of the Invention] The crane rescue device of the present invention can reliably rescue the horizontal movement of the crane. Therefore, it is not necessary to provide a manipulator for maintenance in the work room with a crane,
There is an effect that the equipment composed of this working room becomes very inexpensive.

[Brief description of drawings]

1 to 4 are views showing an embodiment of the present invention,
1 and 2 are respectively a side view and a plan view of the radioactive waste vitrified solids inspection equipment, FIG. 3 is a sectional view taken along the line III in FIG. 2, and FIG. 4 is an enlarged view taken along the arrow IV in FIG. is there. 1 ... Working room (cell room), 1d ... Side wall, 4 ... Track (rail guide), 5 ... Traveling platform, 7 ... Trolley platform, 10 ...
… First drive source, 11 …… Linear body (chain), 20 …… Input shaft, 21 …… Drive mechanism, 22 …… Drive shaft, 23 …… Second drive source.

Claims (1)

[Scope of utility model registration request] 1. A rescue device for a crane, comprising: a traveling platform horizontally moving on a track in a working chamber; and a trolley platform mounted on the traveling platform, wherein the first driving source is provided outside the working chamber. A linear member that travels along the track in the work chamber and is connected to the traveling mount; and a drive mechanism that drives the trolley base by rotation of an input shaft that is provided on the traveling mount and extends toward the side wall of the work chamber. A drive shaft disposed on the side wall, penetrating the side wall, moved to the inside of the work chamber and connectable to the input shaft, and a second drive source connected to the drive shaft and arranged outside the work chamber. A crane rescue device characterized in that