JPS5943354Y2 - Large crane repair equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a repair device for large cranes.

Conventionally, when repairing a girder section of a large crane having a lifting capacity of 50 tons, for example, scaffolding was attached to the side of the girder section.

However, according to this method, when a crane is required, one scaffold must be removed from the girder, which is very troublesome.

In addition, the girder section of the large crane is located 70 to 80 meters above the ground, and the use of regular scaffolding alone would have given workers an extreme fear of heights.

The present invention was developed in view of the above problems, and its purpose is to easily and quickly position scaffolding on the girder section of a large crane when repairing the girder section, and to alleviate workers' fear of heights. The purpose of the present invention is to provide a repair device for large cranes that has solved the problem.

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

1 is a large crane, 2 is a girder portion thereof, 3 is a first lifting traveling device, and 4 is a second lifting traveling device provided inside the first lifting traveling device 3.

The girder section 2 has two girders 2a provided in parallel.
, 2b, each of the above-mentioned lifting traveling devices 3,
4 is movable on the upper surface of the girder section 2.

3a and 3b are lifting devices provided at both lower ends of the first lifting device 3, and 4a is a lifting device provided at the center lower end of the second lifting device 4.

At the tip of each lifting device 3as3bp4a, each lifting fitting 5 is attached.
a, 5b, and 6 are provided.

The capacity of such a large crane 1 is 7 to 800 tons, and its girder section 2 is located at a height of 70 to 80 meters above the ground.
Moreover, each girder 2a.

The height of 2b alone is 8 meters.

Reference numeral 7 denotes a purge-like structure (hereinafter referred to as a barge), the width of which is wider than the width of the girder section 2, and the length is slightly longer than the lifting fittings 5a, 5b, and 6 of each of the lifting traveling devices. There is.

Reference numeral 8 denotes a plurality of (six in this embodiment) lifting fittings provided on the barge 1, each of which is connected to each lifting fitting 5 of each lifting traveling device.
They are provided at positions corresponding to a, 5b, and 6.

Reference numerals 9a, 9b, and 9c designate a plurality of (three in this embodiment) stands placed at predetermined positions on the upper surface of the barge 1.

Each of the frames 9a, 9b, and 9c is normally fixed on the barge I with fixing fittings (not shown), but when necessary, they are made movable on the barge I via wheels etc.
Reference numerals 10a, 10b, 10c, and 10d are flexible scaffolds constructed in multiple stages so that the height is slightly higher than the height of the girder section 2, and each of the above-mentioned mounts is installed at four locations corresponding to the side surfaces of each of the girders 2a, 2b. 9a, 9b, and 9c.

In addition, each column type scaffolding 10 a p 10 b , 10
c p 10 d can be tilted, for example, as shown by the two-dot chain line in FIG. 2, by rotating the turnbuckle that it has inside. It can be provided along with.

Next, the assembly work of this repair device will be explained.

First, each mount 9as9 is placed on the purge T placed on the ground.
b, 9c are fixed with fixing metal fittings, and each of the frames 9a, 9 is fixed.
A flexible scaffold 10 is placed on the girders 2a and 2b of the girder section 2 of the large crane 1 to be repaired.
a, 10b, 10c, 10d to each of the above girders 2a
, 2b and the slope of each side.

Then, move the large crane 1 onto the purge 1,
As shown in FIG. 1, the purge 1 is lifted up via the cables 11 so that the respective adjustable scaffolds 1oa, lob, 10c, and 10d are attached to the sides of each of the repair girders 2a and 2b.

In this way, the purges that have been lifted up to the girder section are suspended in three rows, two at each location, for a total of six locations, so they hardly ever sway.

In addition, since the working floor area above the purge is wide, it is easy to perform the work, and since the ground directly under the purge cannot be seen, the worker's fear of heights can be eliminated.

Furthermore, if necessary, a large crane can be used to simply lower the purge to the ground, eliminating the need for the troublesome work of removing scaffolding as in the past.

Note that in the drawings of this embodiment, the central pedestal 9b is positioned to the left of the pedestals 9a and 9c at both ends, but this does not have any special meaning, and is intended to show the state in which the pedestal 9a has been moved. .

As described above, according to the large-scale crane repair device of the present invention, the flexible scaffolding of the repair girder section can be assembled on the ground above the purge, and the purge can be lifted onto the girder section located at a very high place. The scaffolding can be easily and quickly prepared, or the scaffolding can be easily removed from the girder part.

Furthermore, since the floor area above the purge is large, repair work is easy, and workers' fear of heights can be removed, making it possible to work safely at heights.

[Brief explanation of drawings]

FIG. 1 is an overall view of an embodiment of the present invention, FIG. 2 is an enlarged view taken along the line A--A in FIG. 1, and FIG. 3 is a right side view thereof. 1...Large crane, 2...Girder section, 7...Purge-like structure (purge), 8...
...Lifting fittings, 10a, 10b, 10c, 10cl
...-Flexible scaffold, 11... Cord.

Claims (1)

[Scope of utility model registration request] On the upper surface of a barge-like structure having a width wider than the girder part of a large crane, there are a plurality of lifting fittings and a height adjustable to match the height of the girder part at positions corresponding to the side surfaces of the girder part. A repair device for a large crane, characterized in that a type of scaffolding is provided, and the purge-like structure is lifted by the large crane via a cable.