JPS59108690A - Method of assembling portal 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] [Field of application of the invention] The present invention relates to a method for assembling a gantry crane.

In particular, two running rails are laid on the floor in the depth direction inside the building, and four (4 clubs, 4 hooks) or two (2 clubs, 2 club type) running on these running rails. In this case, the posts (pillars) are arranged upright, and two carder rails are placed on top of these posts to guide the transverse wheels of the rub that runs horizontally in a gate shape, with the distance between the wheels of the rub that runs horizontally. Stretch apart, hoist and wind this sideways love.
This article relates to the method of assembling a gate-type crane that is equipped with a hanging hook for lowering the beard and is used for carrying various machines and equipment into buildings and for installation work. The aim is to eliminate the need for a crane, and to enable the installation of horizontal rubs on girder rails in low locations on building ceilings.

[Prior art]

The prior art and its problems will be explained with reference to FIGS. 1 to 3. Figure 1 shows the device being assembled and used inside a building.

FIG. 1 is a top view and a front view showing an example of a conventional two-club, two-club type, gantry crane with a carrying capacity of 100 tons. This type of gantry crane is used to transport and install various types of heavy machinery and heavy equipment into buildings. 4. Transporting heavy machinery.

It is assembled at the time of installation, and disassembled once the transportation and installation are complete. The assembly of this gantry crane in a building is usually carried out in the following order. On the floor 1 inside the building, two running rails 2 and 2' are installed in the depth direction of the building, and a boss runs on these running rails.
3.3' is first.

Stands upright. In this case, in order to prevent the posts from tipping over, the crane shown in Figure 2 (this figure is a 200-ton gate type crane that uses four posts in the case of a 4-club, 4-club type)
Wires 11 to 18 called tralopes shown in the figure are stretched diagonally between the upper fulcrum of each post and the fulcrum on the floor. Next, place it in a gate shape on top of the two left and right posts.
Two girder rails 4.4' are provided with traversing wheels 6.6' (
In the illustrated example, four traversing wheels are provided for each traversing rub).

Now, the two left and right posts can stand on their own by the girder rails, so the tiger ropes 11 to 18 stretched to prevent falling are removed. Two transverse rubs 5.5' are then placed on the twelve girder rails 4, 4'. For each horizontal rub 5,5'.

Although not shown in FIG. 1, a hoist whose operation is controlled by commands from the ground and hoisting hooks for hoisting and lowering are installed.

Note that 3o and 30' are post travel drive units each having a travel wheel at its lower end and a post I-3, 3' attached to its upper part.

FIG. 3 is a diagram illustrating the work procedure when placing the conventional horizontally moving rubs 5, 5' on the girder rails 4, 4', and is a side view of FIG. 1 seen from the left and right direction. 7 is a winding and lowering screw (1
) lift stick, 8 is horizontal love 5 girder rail 4,4
9 is the crane used for the above-mentioned loading work, 10 is the ceiling of the building, and 3.3
' indicates a post as in Figure 1. Conventionally, as shown in Figure 1, a crane 9 lifts the horizontally moving rub 5 until the lower end of the hanging hook 7 reaches a height exceeding the upper end of the girder rails 4, 4'.
while moving the crane 90 by manipulating the footrest 8 of the crane 90 so that the traverse wheels 6,6' (FIG. 1) rest on the girder rails 4,4'.

A horizontally moving rub 5 was placed on the girder rails 4, 4'.

However, the conventional assembly method as described above has 1
There were problems as described below. That is.

The first problem is that the tora rope 11 is used to prevent the post from falling over.
Since it is a method of tensioning ~18, the traveling rail 2.2'
It is necessary to allow a certain distance between the rails 2 and the side wall of the building, and the problem is that the ``travel rails 2, 2'' cannot be laid too close to the side wall of the building. The second problem is
As explained in Figure 3.

To place the horizontal rub, use the crane 9 to first raise it to a height t13 until the lower end of the hanging hook 7 exceeds the upper end of the girder rails 4, 4', and then move the horizontal rub in the direction of the arrow. Because it was an assembly procedure, and because there is a limit on the minimum length of the hook attached to the bottom of the horizontally moving love 5, it is impossible to shorten it any further. Height, i.e. garter L/-#4.

The height of the upper end of the rub 5 extending horizontally from the upper end of 4'.

The problem is that it is difficult to carry out the love mounting work horizontally in a place where the height H from the carder rail 4.4' to the ceiling 1o is low. It is. To give a specific example, in the case of a 100 cm gantry crane equipped with 2 clubs and 2 hooks, the height of the horizontally moving rubs 5 and 5' is approximately 100 cm, and the shortest possible length of the ti3 lift 7 is approximately 100 cm. It is about 150cm,
Therefore, in order to enable the above-mentioned horizontal rub mounting work, it is necessary to allow the height 11 to be approximately 300 cm. requires at least 500 cm, whereas 1
00) The height of the gantry crane is approximately 1,000 cm, and with the gantry crane using the conventional assembly method described above, it is necessary to allow for wasted space in the ceiling, and it is necessary to allow for wasted space in the ceiling, or in places with low building ceilings. [Objective of the Invention] The purpose of the present invention is to solve the problems in the prior art described in L1.
~． To provide a method for assembling a gate type crane, which eliminates the need for a trolley for preventing falls during post assembly, and further enables horizontal rub mounting work in a low temperature location on the ceiling of a building.

[Summary of the invention]

The features of the present invention are to achieve the above objects.

One of the two girder rails is removably attached to the boss traveling drive unit, which is equipped with wheels for traveling at the lower end and posts are attached to the upper part, forming a small gate shape. Place several posts in a q-shape above the post travel drive unit, and place the remaining posts at the upper ends of these two posts.
A book girder rail was stretched and then used to form the narrow gate shape described above. Remove one girder rail, attach it to the upper end of the bost, and extend a horizontal run whose total length in the fi direction is smaller than the inner dimension of the gap between the two girder rails to form two girder rails. There is a method in which the horizontal rub is passed vertically between cargo rails and then rotated by 90 degrees, and the horizontal rub is placed on two carder rails.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. FIG. 4 is an explanatory diagram of a working method that eliminates the need for a tow rope for preventing overturning when assembling a two-bottom crane according to an embodiment of the present invention in the case of a 200-ton type gate type crane of 4 Kushif or 4 Kushif type. first.

One of the two girder rails (in this example, there are a total of four girder rails, so 02 out of the four girder rails)
is removably attached to the side surface of the boss traveling drive unit 30, 30', for example, by fastening bolts or nuts, forming a small gate shape, and then attaching the boss to the top of the boss traveling drive unit 30, 30'.3. 3' upright and secure the lower end of the post and the upper end of the post traveling drive unit with bolts 1-1 Attach the remaining girder rails to the upper end of each post 3.3' Next, remove the girder rail used to form the small portal from the small portal and attach it to the top of the post.

Next, FIG. 5 shows one embodiment of the present invention.

The horizontal love placement method will be explained. In Figure 5,
21 is a pulley t13 suspended from the ceiling 10 of the building, and 22 is a wire for hoisting up and lowering the pulley 21 and the love 5, which runs horizontally via the lift 8, only in the vertical direction.

The other symbols →3- are the same as in the case of FIG. However, in FIG. 5, the overall length W1 of the transversely moving rub 5 in the transverse direction is made smaller than the inner distance W2 between the two girder rails 4, 4'. Therefore, if the horizontal lug 5 is rotated by 90 degrees from the state immediately before it is placed on the girder rails 4, 4', it will be in the state 5" shown in the lower part of FIG. 5, and the hanging hook at that time will be 7 and 8 are each 7″
, 8. In the state of "Go05", since Wl is smaller than W2, it is possible to make the horizontally moving rub 5" pass between the two carder rails 4 and 4irO in the vertical direction, and therefore the horizontally moving rub 5" ” to l “l lift 8”,?
ft car 2] through the wire 22 shown with broken line arrows (up and down)
Lower the girder rail 4.4' in the horizontal direction, pass between the two girder rails 4.4', and rotate the horizontal luff by 90 degrees until the lower end surface of the horizontal luff slightly exceeds the upper end surface of the carder rail.
If you do this, the sideways love will be in the state shown in Figure 5, and the wire 2
By lowering the luff 2 slightly, the work of placing the horizontal luff 5 on the Carter rail 4.4' is completed. The above loading work method and the discrepancy are as follows:
．． The height h' from the upper end of the card barrel to the labout end horizontally, which is necessary for placing it on the carderel 4', is b compared to the height 1 and 300 cm required in the case of Fig. 3. ′
= ; 120 cm and lower, so also. Also the required height IY from the girder rails 4, 4' to the ceiling 10.

The height H' is now 200 cm, compared to the height H of 500 cm that was required in the case of Figure 3, making it possible to carry out horizontal lab loading work in low ceiling areas of the building, reducing wasted ceiling space. can do.

〔Effect of the invention〕

As explained above, according to the present invention, there is no need for a rope to prevent falls when assembling the post of a gantry crane that is assembled and used inside a building, so the gantry crane can be assembled even in a building with a small width dimension. This makes it possible and improves work safety.

It is also necessary when performing horizontal rub mounting work. Since this assembly method allows the height from the girder rail to the building ceiling to be lowered, it is possible to carry out installation work in areas with low building ceilings. It is now possible to raise the height and bring in heavy machinery.

This has the effect of improving the safety of installation work.

[Brief explanation of drawings]

Figure 1 is a top view and front view of an example of a gate type crane installed indoors, Figure 2 is a front view and top view illustrating the conventional post assembly work using a trolley rope to prevent overturning, and Figure 3 is a FIG. 4 is an explanatory view of the conventional horizontal rough placement work, FIG. 4 is an explanatory view of the post assembly work according to the present invention, and FIG. 5 is an explanatory view of the horizontal rough placement work according to the present invention. Explanation of symbols] Building floor 2, 2'... Traveling rail 3.3
'...Post 3゜, 3o'...-Post travel drive unit 4.4'-Gargoo rail DI 5', 5'' Lateral love 6.6'
Traversing wheels 7.7", 8,8"・t1 Cori hook 9...Crane 1o Building ceiling 11~1
8...-Tralope 21/Pulley 22...Hoisting and lowering wire Patent attorney Junnosuke Nakamura? 1 Zutou secondary spear 4 Zutsu

Claims (1)

[Claims] Two girder rails for guiding the traversing wheels of a lateral love equipped with a hoist and two hooks for hoisting and lowering. A gate-shaped crane assembly is used for transporting various machines, equipment, etc. indoors, and for site inspection work, etc. by running the above-mentioned posts in a gate-shaped manner on top of the building and running on a traveling rail laid on the floor of the building. In the method. One of the two girder rails is removed from the post travel drive unit, which is equipped with wheels for travel at the lower end and posts are removed at the top. 7 Next, install each post vertically above the post travel drive, attach the remaining girder rail to the upper ends of these two posts, and then form the small gate-shaped structure described above. ℃・Remove one girder rail and attach it to the top end of the post, and attach a horizontal rub whose total length in the horizontal direction is smaller than the inner distance between the two girder rails. A method for assembling a gate type crane characterized by passing the horizontal rub vertically between two girder rails, rotating the horizontal rub by 90 degrees, and placing the horizontal rub on the two girder rail routes. .