JPS5836883A - Rope support device for bridge crane - 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 The present invention relates to a device for holding and releasing a rope.

Until now, as an example of a rope holding device for a bridge type crane with a center-folding boom, the trolley ran inside the boom, and the height of the rope was above the bottom surface of the boom. has a structure that allows it to rotate within a 900 horizontal plane,
During normal work, it can be folded under one side of the boom.
Only when undulating, I turned 90 degrees to reach the boom on the other side and was in charge of hooking the rope as it came down.

However, in principle, the above method could not be applied to a single-girder boom.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for preventing the rope from hanging down at the center bend of a bridge crane having a center-folding boom consisting of a single girder.

The gist of the present invention is that the rope support is moved between a position where it can automatically support the rope and a position where it is separated from the rope by guiding the arm interlocking with the rope support into the guide groove.

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3.

FIG. 1 shows a container crane with a folding boom l in a folded and undulating state. The rope 4 that has been passed around the hoisting device 3 in the mechanism room 2 is fixed to the tip of the boom 1 after passing through the sheave 6 on the trolley 5 and the sheave 8 on the hanging tool 7. Therefore, without the rope holding device 9, the rope 4 would hang down at a position where the rope guide 10 at the base of the boom l and the tip of the boom would be connected in a straight line.
Interference with the ship indicated by diagonal lines in the diagram cannot be prevented.

Therefore, a rope holding device 9 is required. However, since the trolley 5 also travels on the boom 1, the present device must be retracted toward the boom L side at this time.

2 and 3 show detailed views of the rope holding device 9 of the invention. Since this device is arranged symmetrically, only one side is shown, and FIG. 2 shows the retracted state, and FIG. 3 shows the lowered state.

The motor 11 is fixed on the pool 1 together with a reduction gear 12, and the motor 11 drives the reduction gear 12 and rotates a shaft 13 extending from both sides. A chain 16 is stretched between the upper tin rocket 14 sprocketed on the shaft 13 and the lower sprocket 15 rotatably attached to the boom l, and both ends of the chain 16 are fixed to a movable block 17. Due to the rotation of the shaft 13,
The movable block 17 moves up and down. A shaft 18 is rotatably attached to the center of the movable block 17, a frame 19 is fixed to its lower side, and an arm having a roller n at its tip is fixed to its upper side. The lower part of the frame 19 serves as a cylindrical support 21 extending horizontally on both sides, on which the rope 4 is hooked. The roller n is installed in such a way that when the movable block 17 is in the lower position, the roller n fits into the groove of a grooved guide B fixedly arranged on the outside of the movable block 17. The movable block 17 is supported at two places, upper and lower, by guide toms which are pressed down in the horizontal direction, so that it can move only in the upward direction, and the guide toms are fixed to the poom l. Figure 4 shows a developed view from inside of the grooved guide. The grooved guide B has a groove 5 shown in
Several guide lever levers are rotatably mounted around the bottle 27, and the guide lever levers come into contact with the inner wall of #125 at both ends of their movable range and stop.

The guide lever is pressed in one direction by a spring row, but can be moved by being tilted in the opposite direction by a roller n rolling inside the groove 5.

According to this embodiment, by rotating the motor 1, the movable block 17. The frame 19 and the support 21 can be moved up and down, and as the frame 19 and the support 21 are moved up and down, the roller ρ at the tip of the arm is guided by the groove 5 of the grooved guide n and rotates the shaft 18 and the support 21 by 900 degrees. The grooved guide has several guide levers cut into the phantom groove 5, and is pushed out in one direction at the branching point of the groove 5.

By installing this symmetrically, one vertical movement can move up to 90 degrees.
It rotates in one direction by 0° and then returns to its original position with the next vertical movement.
When it is lowered from the longitudinal direction of the rope, it automatically rotates 90 degrees and stretches out at right angles to the lower side of the rope 4. In the raised state, the support 4 remains perpendicular to the rope 4, and the top is raised.
Scoop up rope 4. Next, when lowering, support 21
rotates 90 degrees while the bottom is tilted, faces the longitudinal direction of the rope 4 again, and returns to the original state without catching the rope 4.

As described above, according to the present invention, the rope support can automatically change between a state in which it can hold the rope and a state in which it is separated from the rope by vertical movement and horizontal rotation, independently of other booms (girders). - Even if it is a girder, the effect of holding the rope without any problem can be obtained.

[Brief explanation of drawings]

FIG. 1 is a side view of a folding boom type container crane equipped with a rope holding device according to an embodiment of the present invention, and FIGS. 2 and 3 are detailed perspective views of the rope holding device in FIG. Fig. 2 shows a state in which the rope support is raised away from the rope, Fig. 3 shows a state in which the rope support has been lowered to a position where it can hold the rope, and Fig. 4 shows a groove adopted in an embodiment of the present invention. FIG. l... Boom, 4... Rope, 5. Trolley, 9... Rope hoisting device, 11.
Hitting motor, 12... curved reducer, 14... sprocket, 16... chain, 17... movable flock, 18... curved shaft, 19... frame , addition... arm, 21... song support, n
...Curved roller, illusion...Grooved guide, 6...
...Groove,...Guide lever, n...
・Pin, ah...Spring agent Patent attorney Usui 1
) Toshiyuki. ', 7 to the power 1 figure

Claims (1)

[Claims] 1. A frame is attached to a block that moves vertically in a guide fixed to a girder so that it can rotate freely on a vertical axis, and a support is provided at the bottom end of the frame to hang a rope, and An arm is provided in the horizontal direction, a fixed curved guide groove is provided at the position where the tip of the arm fits, and by making the tip of the arm follow this guide groove, the frame rotates in conjunction with the vertical movement of the frame. A rope holding device whose main feature is to hold the rope.