JPS5924073B2 - derrick device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heavy derrick device and a small-capacity derrick device that pivot between front and rear batches in a cargo handling device installed on a ship's hull.

In this invention, a heavy derrick with a guy post straddles a small-capacity derrick with an outrigger, and the derrick mast is used for both the heavy derrick and the small-capacity derrick, and the outrigger of the small-capacity derrick is rotary. It is designed to be folded by a movable device such as an actuator or a piston cylinder, and the purpose is to allow the heavy derrick boom to rotate smoothly and to quickly switch between heavy derrick equipment and small-capacity derrick equipment.

Conventionally, in this type of derrick equipment, when the heavy derrick boom swings between the front and rear hatches, the small-capacity derrick boom is installed on the same side, so the suspension rope of the small-capacity derrick swings between the hatches. The sling and pulley of the small-capacity derrick device had to be removed from the sling attachment hardware each time the work was done.

This removal work was carried out at high places and on narrow scaffolding, which was dangerous and time-consuming.

This invention was developed in view of the drawbacks of such conventional inconvenient devices.

To explain the configuration of the present invention, as shown in FIG. Ara l-IJ gar 2, 2'
is pivoted in a foldable manner, and the topping cable 3 of the heavy derrick device is stretched over the tip of the derrick mast.

When the heavy derrick device is used, the small-capacity derrick boom 4 is stored in the derrick mast 1, and the outrigger 2゜2' is provided extending laterally to the hull. Objects are folded by a movable device 5 such as a rotary actuator or a piston cylinder.

The base of the heavy derrick boom 6 is supported by a support fitting 8 on the winch platform 7, and the tip of the heavy derrick boom 6 is stretched several times from the tip of the derrick mast 1 by the heavy derrick topping cable 3. The heavy derrick guy cables 9 and 9' are stretched from guy posts 10 and 10' to a swivel type eye fitting 11 at the tip of the heavy derrick boom 6, respectively.

When the heavy derrick boom 6 rotates to the opposite hatch side, the small capacity derrick boom 4 is stored along the derrick mast 1, and the outriggers 2 and 2' are folded so that they do not interfere with the operation of the heavy derrick. It has become.

The heavy derrick guy cables 9, 9' are attached to the swivel eye fitting 11 at the tip of the heavy derrick boom 6 and the guy post 10.
, 10' are stretched between the sheaves of the rotary brackets, and when the heavy derrick boom 6 rotates, the guy cables 9, 9'
are designed so that they do not intersect.

Next, to explain when a small-capacity derrick device is used with reference to FIGS. The IJ gars 2 and 2', which had been folded, are then extended horizontally by the movable device.

The outriggers 2 and 2' are foldably disposed at appropriate positions on the derrick mast 1, and the outer end of the heavy derrick boom 6 side is designed so that the heavy derrick boom 6 and the heavy derrick guy cable 9' can be stored. A U-shaped groove 12' with an opening is provided, and the heavy derrick boom 6 can be stored on the opposite side as well, and the heavy derrick boom 6 can be stored horizontally by the movable device.
and grooves 12 and 12' for heavy derrick guy ropes 9 and 9'.
It is designed to be stored in between.

The small-capacity derrick booms 4 and 4' in the front and rear, respectively, are fitted with brackets near the base of the derrick mast 1) 13.1
3' is supported by a small capacity derrick boom 4°4'.
The guy topping cables 14 and 14' for the small capacity derrick are attached to both side outriggers from the tips of the small capacity derrick booms 4 and 4'.
Small capacity derrick boom 4, 4 installed at the tip of 2, 2'
' is supported.

As mentioned above, in this invention, a heavy derrick device with a guy post straddles a small-capacity derrick device with an outrigger and swings, and the derrick mast serves both as a heavy derrick mast and a small-capacity derrick mast.
The outriggers of small-capacity derricks are folded using a movable device such as a rotary actuator or piston cylinder, so that the heavy derrick boom can rotate smoothly, and when extending the outriggers, the heavy derrick boom and its guy cable are folded in a U-shape. This has the effect that it can be stored inside the shaped groove and quickly be used as a heavy derrick device or a small capacity derrick device.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of the heavy derrick device according to the present invention when it is in use. FIG. 2 is a schematic front view of the small capacity derrick device according to the present invention when it is in use. FIG. 3 is a schematic plan view of the small capacity derrick device according to the present invention when it is in use. 1・°°・°・Derrick mast, 2 , 2'...
Outrigger 13...Topping rope, 4, 4
'...Small capacity derrick boom, 5...Movable device, 6...Heavy derrick boom, 7...
... Winch platform, 8... Support metal fittings, 9, 9'... Guy cables, 10, 10'...
... Guy post, 11 ... Swivel type eye fitting, 12 , 12' ... Groove, 13, 13' ...
...Goose neck bracket, 14, 14'...
...Small capacity derrick guy topping rope.

Claims (1)

[Claims] 1. In a cargo handling device for a ship in which a heavy derrick device and a small-capacity derrick device are installed by using a derrick mast, an outrigger projecting laterally can be folded at an appropriate position of the derrick mast. The guy topping cable of the small capacity derrick boom is attached to the tip of the IJ gar, and the guy cable of the heavy derrick boom is attached to the guy posts on both sides of the hull. A derrick device, wherein the derrick device is positioned inside the heavy derrick boom and its guide line in a folded state. 2. The derrick device according to claim 1, wherein the derrick mast is a single derrick mast. 3. The derrick apparatus according to claim 1, wherein the derrick mast is a multi-leg assembly type derrick mast. 4. The derrick device according to claim 1, wherein the outriggers extending in the transverse direction of the hull are pivoted to the derrick mast by a movable device such as a rotary actuator or a piston cylinder. 5. In a ship's cargo handling equipment in which a heavy derrick device and a small-capacity derrick device are installed by using a derrick mast, outriggers projecting laterally are collapsibly pivoted at appropriate positions on the derrick mast, and a small-capacity derrick device is installed. The outriggers of the capacity derrick boom are stretched at the tips of the A-IJ gars, and the guy cables of the heavy derrick boom are stretched between the guy posts on both sides of the hull. The heavy derrick boom and its guy rope are located inside the derrick boom and its guy rope, and when the outrigger is extended, the heavy derrick boom and its guy rope are stored in a U-shaped groove at the outer end opening provided in the outrigger. A derrick device characterized by being forced. 6. The derrick device according to claim 5, wherein the derrick mast is a single derrick mast. 7. The derrick apparatus according to claim 5, wherein the derrick mast is a multi-leg assembly type derrick mast. 8. The derrick device according to claim 5, wherein the outrigger extending in the transverse direction of the hull is pivoted to the derrick mast by a movable device such as a rotary actuator or a piston cylinder.