JPS60209494A - Trolley feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applied to a traveling crane, especially a marine gantry crane, when cargo handling is carried out with the boom on the opposite side of the quay retracted. [Prior art] Figures 1 and 2 show a conventional power supply device for the trolley of an IJ-crane. A ship, (2) is a gantry crane that can run on the ship (1), (3) is a main girder, (4) is a leg,
(5) is an overhanging boom that is installed on both sides of the main girder (3) and can be extended and retracted by rotating in the horizontal direction; (6) is the main girder (3);
The trolley (7) is designed to be able to run horizontally on the upper and overhanging overhanging boom (5), and the trolley (7) is installed from the main girder (3) side. A trolley power supply device capable of supplying power to J-+61, (8) is a quay.

The trolley power supply device (7) has approximately the same length as the main girder (3) of the gantry crane (2), and is capable of traveling in the traverse direction of the trolley (6).

That is, a cable drum (9) is rotatably attached to the front and rear of a carrier frame extending parallel to the main girder (3), and a wire rope (4) with one end fixed approximately at the center of the main girder (3) is attached. The cable drum (b) and the cable drum (b) extend in opposite directions along the main girder (3).
9) It is wrapped around αe, changes direction, and moves to the main girder.
(3) extends to the center side, and the other end is Toro IJ-461
is fixed.

The acid supply cable laid from the ship side to the gantry crane (2) rises from the central part X1 of the main girder (3), and half of the power supply cables are wire ropes σ.
It extends parallel to υ and is wound around the cable drum (9),
The remaining half extends parallel to the wire rope @, is wound around the cable drum α, extends toward the center of the main girder (3), rises from the center part (It has been sent to 61.

When the trolley (6) moves sideways, the wire rope (b) or @ is pulled, so the trolley IJ power supply device (7) moves together with the trolley (6) in the direction of the trolley movement, and the power supply cable 1 The trolley power supply device (7) also moves together with the trolley power supply device (7). For example, as shown in Figure 2, Toro! J-
16) moves a distance to the right from the state shown in Figure 1,
The trolley feeder rear frame moves to the right by a distance L/2.

However, with the above-mentioned gantry crane, the Toro IJ-+61 is attached to the main girder (3) even when carrying out cargo handling work with the overhanging boom on the opposite berth side retracted so as not to interfere with other ships navigating on the sea. If the trolley crosses from the center of the trolley to the opposite side of the quay, the cable drum and carrier frame of the trolley power supply device (7) will protrude from the ship's side to the opposite side of the quay, causing the navigating vessel to collide with the cable drum and carrier frame. There is a possibility that

[Purpose of the invention]

The present invention has been developed in view of the above-mentioned circumstances, and even when carrying out cargo handling work with the overhanging boom on the opposite side of the quay retracted, the cable drum and carrier frame of the trolley power supply device protrude from the ship's side to the side opposite to the quay. This was done with the aim of preventing this from happening.

[Structure of the invention]

The present invention comprises two stages: an upper carrier frame that can be moved in the trolley traverse direction as the trolley travels; and a lower carrier frame that can be fixed so that it does not move in the trolley traverse direction during work. To move the upper carrier frame, one end of a pair of strings is fixed to the crane girder, and one end is wrapped around a cable drum installed in front or behind the lower and upper carrier frames, and the other end is attached to a trolley. fixed,
The other end of the string is wound around a cable drum provided at the rear or front of the lower and upper carrier frames, and the other end is fixed to the trolley.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The trolley power supply device (7) has two carrier frames, upper and lower, extending parallel to the main girder (3), and a cable drum (91Q) is installed at the front and rear ends of the upper carrier frame.
A cable drum CI3α→ is rotatably attached to the front and rear ends of the lower carrier frame.

Wire rope traces with one end fixed approximately at the center of the main girder (3) extend in opposite directions along the main girder (3), are wrapped around the cable drum σ]α chrysanthemum, change direction, and connect to the main girder (3). Cable drums (9) extend toward the center of the girder (3), change direction by being wrapped around the rope sheep, and extend in opposite directions along the main girder (3).
The main girder (3) changes direction after being wrapped around σ
The other end is fixed to the Toro IJ-161. In addition, the power supply cable rises from approximately the central part Xl of the main girder (3), half of the supply cables follow the same route as the wire rope (b), and the other half follow the same route as the wire rope, leading to the trolley. (6) rises from approximately central portion X2 and is sent to the trolley (6). Note that in FIGS. 5 to 5, the same reference numerals as those shown in FIGS. 1 and 2 indicate the same components.

As shown in Figures 5 to 5, for example, the overhanging boom (5) on the right side of the figure (the opposite side of the quay (8)) is stored, and the overhanging boom (5) on the left side (on the quay (8) side) is stored. ) when carrying out cargo handling work with the lower carrier frame extended.
Stop at the position shown in the figure, fix it so that it does not move by appropriate means, and move the trolley IJ-(61) sideways.Trolley (6)
The upper carrier frame becomes a trolley when
161 moves in the lateral direction, but the upper carrier frame does not move from the ship's side even if 61 traverses on the main girder (3) to the end opposite to the quay (8). It does not protrude to the opposite quay side. In this case, since the lengths of the wire ropes q11I and 12 are constant, when Toro IJ-(61 traverses the distance), the upper carrier frame moves by a distance of @L/2.

It should be noted that the present invention is not limited to the above-described embodiments, and that a chain may be used instead of a wire rope, and that various other changes may be made without departing from the gist of the present invention. Of course.

〔Effect of the invention〕

According to the trolley power supply device of the present invention, even when carrying out cargo handling work with the overhanging boom on the opposite side of the quay retracted, the cable drum and carrier frame do not protrude from the side of the ship to the opposite side of the quay. This can reduce various excellent effects such as ensuring safety without causing any obstacles to the navigation of ships.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of a conventional trolley power supply device,
FIG. 3, FIG. 4, and FIG. 5 are explanatory diagrams of an embodiment of the trolley power supply device of the present invention. In the figure, (6) is the trolley, (7) is the power supply device, +9) 1
ll) is a cable drum, I@ is a wire rope, C1
aα pull cable drum is shown.

Claims (1)

[Claims] 1) Equipped with an upper carrier frame that can be moved in the trolley traversal direction as the trolley traverses, and a lower carrier frame that can be fixed so as not to move in the trolley traversal direction during work, and one end for moving the upper carrier frame. is fixed to the crane girder, one of which is wrapped around a cable drum provided in front or rear of the lower and upper carrier frames, and the other end is fixed to the trolley IJ-. Things 5. A trolley power supply device characterized in that the other end of the cable is wound around a cable drum provided at the rear or front of the lower and upper carrier frames, and the other end is fixed to a trolley.