JPS6253440B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention involves welding a support member that supports a shaft that suspends the fixed end of the wire rope to a drum protection plate that covers the cylindrical surface of the drum around which the wire rope for cargo handling is wound. The present invention relates to an improvement of a hoist in which a reinforcing member is provided to reinforce the support member mounting portion of the drum protection plate.

A conventional device of this type will be explained with reference to FIGS. 1 and 2. In the figure, 1A and 1B are known pairs of pulley side plates, and 2A and 2B are horizontally spaced apart from each other, and both ends thereof are suspended from the lower part of the corresponding pulley side plates 1A and 1B. The hoist outer frame, which will be described later, is suspended by the hanging rod. 3 is a well-known drum placed within the outer frame of a hoist, which will be described later, and around which a wire rope for cargo handling, which will be described later, is wound; 4 is suspended by hanging rods 2A and 2B, and surrounds and supports the drum 3. The outer frame of the hoist includes a pair of side plates 4A and 4B that are arranged correspondingly to both axial ends of the drum 3 and support an electric motor (not shown), a reduction gear mechanism (not shown), etc., and a cylindrical surface of the drum 3. Drum protection plates 4c, 4D, 4E, 4F, 4G, 4H, 4 whose one end and the other end are welded correspondingly to the pair of side plates 4A, 4B.
J and the lower horizontal bent portion 4 of the drum protection plate 4D.
Support members 4K and 4L consisting of a pair of flat support plates that support the fixed end of a cargo handling wire rope, which will be described later, are welded vertically and at intervals to the lower surface of Da, and a horizontal bent portion 4Da. It is composed of reinforcing plates 4M and 4N which serve as reinforcing members. 5 is a shaft whose one end and the other end are supported by the supporting parts 4K and 4L, and 6 is a terminal fitting whose upper part is loosely fitted to the shaft 5, and whose lower end is fixed to the terminal of a cargo handling wire rope to be described later. a cylindrical support part supported via 7;
Reference numeral 8 denotes a wire rope for cargo handling, one end of which engages with the drum 3 and the other end of which is suspended from the support member 6, which allows the drum 3 to be wound up and rewound, and at the same time suspends the hook block 9. be. In addition, the second
The figure is a side view of FIG. 1 viewed in the direction of the arrow.

In the device constructed in this way, the hook block 9 is moved up and down by the forward and reverse rotation of the drum 3.
Since it moves downward, cargo handling work can be carried out, but
Since the reinforcing plates 4M and 4N are arranged and welded inside the drum protection plate 4D, the shaft 5 must be positioned away from the drum 3, which not only lowers the hoisting height of the hook block 9 but also reduces the welding work described above. It was difficult to do and had the disadvantage of poor productivity.

This invention has been made in view of the above-mentioned conventional circumstances, and includes welding a support member that supports a shaft that suspends the fixed end of a cargo handling wire rope to a drum protection plate, and This invention was made for the purpose of increasing the hoisting height of a hoist provided with a reinforcing member for reinforcing the support member mounting portion.Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 2 and 3. I will explain about it. In the figure 4
Db is a bent part formed by bending the lower half of the drum protection plate 4D toward the drum 3, and 4P is a support made of channel steel that is parallel to the drum 3 and opens downward, and supports a pair of support plates to be described later. The drum 3 side end on the outside of the upper part is welded to the outside of the lower part of the bent part 4Db. 4Q is a reinforcing member whose upper end is welded to the upper outer side of the bent portion 4Da and whose lower end is welded to the upper outer side of the supporting member 4P on the side opposite to the drum 3, and is for reinforcing the connection between the drum protection plate 4D and the supporting member 4P. be. 4R and 4S are support members consisting of a pair of support plates arranged and welded at a predetermined distance from each other in the axial direction of the drum 3 at the lower opening of the support member 4P, and support both ends of the shaft 5 correspondingly. It is. Note that explanations of other symbols are omitted as they are the same as those of FIGS. 1 and 2. Moreover, FIG. 4 is a side view of FIG. 3 viewed from the direction of the arrow.

In a device configured in this way, the drum 3
It is the same as before that cargo handling work can be performed by rotating the shaft 5, but since the reinforcing member 4Q is placed outside the drum protection plate 4D and the lower part of the drum protection plate 4D is bent toward the drum 3 side, the shaft 5 can be It can be placed higher than in the past.

Note that the support plates 4R and 4S may be integral with each other, and that the support plates may be directly welded to the drum protection plate 4D without the support plate 4Q. Needless to say, the reinforcing member 4Q may be welded separately from the drum protection plate 4D, or the reinforcing member 4Q may be integrated with the drum protection plate 4D.

As described above, in the present invention, a bent portion that approaches the drum is formed at the lower part of the drum protection plate, and a support member that supports the shaft that supports the fixed side end of the cargo handling wire rope is provided on the outside of the lower portion of the bent portion. The drum side part on the outside of the upper part is welded, and the side part of the support member on the outside of the upper part opposite to the drum is welded to the upper part of the bent part through the reinforcing member, so that the fixed side end of the wire rope is welded. It is extremely superior in that it can be positioned higher than before, and therefore not only can the hoisting height be increased, but also the fixed side end does not protrude outward, making it possible to downsize. It has the effect of providing a hoist.

[Brief explanation of the drawing]

1 and 2 show a conventional hoist, with FIG. 1 being an overall configuration diagram and FIG. 2 being a side view of FIG. 1 viewed in the direction of the arrow. Furthermore, FIGS. 3 and 4 show an embodiment of the present invention.
FIG. 3 is an overall configuration diagram, and FIG. 4 is a side view of FIG. 3 viewed in the direction of the arrow. In the figure, 3 is a drum, 4 is an outer frame, 4D is a drum protection plate, 4Db is a bent part, 4P is a support member,
4Q is a reinforcing member, 4R and 4S are support members, 5 is a shaft, 6 is a support member, and 8 is a wire rope. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. A support member that supports a shaft that suspends the fixed end of the wire rope is welded to a drum protection plate that covers the cylindrical surface of the drum around which the wire rope for cargo handling is wound, and the drum In the protection plate provided with a reinforcing member for reinforcing the support member attachment part,
A bent portion approaching the drum is formed at the lower part of the drum protection plate, and the drum side portion on the upper outer side of the supporting member is welded to the lower outer side of the bent portion, and the drum side portion on the upper outer side of the supporting member is welded to the lower outer side of the bent portion. A hoist characterized in that the opposite side portion is welded to the upper part of the bent portion via a reinforcing member. 2. The hoist according to claim 1, wherein the reinforcing member is integrated with the drum protection plate.