JPS58167387A - Method of overhauling and transporting large-sized crawler 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 method for disassembling and transporting a large crawler crane equipped with a jacking device for lifting the crane body with its own blade.

Large crawler cranes must be disassembled due to weight and size restrictions when transported on public roads. It is necessary not only to make the disassembly and assembly work easier, but also to load it onto a transport vehicle using the own blade.

There is a large crawler crane that has a truck frame equipped with a jacking device that lifts the crane body with its own blade (Japanese Utility Model Publication No. 55-47825).

When removing the axle beam of this large crawler crane, it is necessary to install a pedestal on the underside of the pace frame.
During transportation, the overall height of the vehicle increases by the height of the pedestal, making it unstable and requiring special lifting equipment to remove the axle beam.

In view of the present invention, the lower running weight 9 left and right a-2
After separating, the crane body is loaded onto the transport vehicle.
Separating the front and rear axle beams [2] It is possible to load the crane body in the low central position for stable transportation.
The purpose of this invention is to provide a method for disassembling and transporting large crawler cranes.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 10.

Base frames 4 are scattered under the crane main body iH upper revolving body 2 via swing wheels 3, and axle beams 5 are connected to guide bins 6 at the front and rear ends of the pace frame 4.
(FIG. 5) and are connected with bolts 7. At each end of the axle beam 5, insertion holes 8a for the crawlers 8 are provided with a difference [.

and is secured with a bottle (not shown).

The crawler 8 here includes the side frame, drive motor,
A general term that includes upper and lower rollers, track shoes, etc.

A hydraulic cylinder 9 is provided on the base frame 4 to facilitate attachment and detachment of the crawler 8 to the end of the axle beam 5, and a hydraulic cylinder 9 is provided on the base frame 4, extending outward from the axle beam 5 at the four corners of the base frame 4. is removably installed in a bracket (11) integrated with the pace frame 4 with a bin (12), and each jack cylinder lO
A float 13, which can be easily attached and detached, is attached to the lower end VC.

Next, the procedure for separating the left and right crawlers 8 and the front and rear axle beams 5 from the crane body 1 and loading them onto a transport vehicle will be explained.

As before, remove the crawler crane's front attachment counterweight (not shown) from the crane body, lower the gantry 14t, install the 74t 13 into each jack cylinder lO, and lower the crawler crane 8.
and fix the axle beam 5. Remove the bottle (not shown) and the travel motor piping (not shown).
Extend the jack cylinder 10 until the track shoes of the roller 8 fall off the ground and lift the crane body l. Next, hang the crawler 8 with another crane 15, extend the hydraulic cylinder 9 and push the crawler 8 outward, Remove axle beam 5 and 9 (Figures 1 and 2).

Next, each jack cylinder lO is extended so that the axle beam 5 is slightly higher than the transport vehicle 16, and the transport vehicle 1
Insert the loading platform 17 of No. 6 under the crane main body l, and
A block 18 of height H is interposed between 7 and the base frame 4, and the jack cylinder 10 is contracted to provide a gap j between the loading platform 17 and the axle beam 5, and the crane main body l is lowered onto the loading platform 17. .

In this state, the axle beam 5 is supported by another crane 15 (Figs. 3 to 5), the bolts 7 are removed L, the axle beam 5 is lowered onto the loading platform 17, and the jack cylinder 10 is placed again.
K-Extend the crane body 11! Float the loading platform 17 area, move the transport vehicle 16 (Fig. 6), unload the axle beam 5t, and lift the transport vehicle 16 area axle beam 5t.
-Drop off.

The transport vehicle 16 is moved under the crane main body l again (FIGS. 7 and 8), the jack cylinder 10 is contracted, and the base frame 4 with the upper revolving body is loaded onto the loading platform 17 of the transport vehicle 16. .

Then, the upper rotating body 2 is rotated 90 degrees, and the upper rotating body 2 is rotated 90 degrees.
The base frame 4 with the upper rotating body is fixed by inserting the stand 19 into the gap between the rear part of the vehicle and the transport vehicle 16, and contracting each of the jack cylinders 10.

The rear jack cylinder 1O is lifted by another crane 15, the bin 12 is removed, the base frame 4 is removed, and each jack cylinder 10 is removed (W, Figure 9 and Figure 1O).

This completes the preparation for transport, but the assembly procedure can be done in the reverse order.

As is clear from the above explanation, the jack cylinder 10
overhang the axle beam 5, and attach the base frame 4.
The RCI is removably installed on the block 18 to stabilize the crane body during disassembly work, and the total height of the block 18 during transportation is lower than that of the conventional type in which the cylinder inside the shirt is attached to the axle beam 5. Also, when removing the axle beam 5, there is no need for special lifting equipment to prevent the wire rope from coming into contact with the crane body, making it easy to disassemble and assemble the large crawler crane, and it is easy to move on site. It has the effect of allowing you to demonstrate your sexuality.

[Brief explanation of the drawing]

The figure shows an embodiment of the method of the present invention, and FIG. 1 is a plan view showing the lower structure of the large crawler crane of the present invention;
Figure 1g2 is an explanatory diagram for removing the crawler, Figure 3 is an explanatory diagram for removing the axle beam r*, Figure 4 is a side view of Figure IriwJ3, the fifth factor is a sectional view taken along ■-■ in Figure 3, and sg6 is an illustration of removing the axle beam. An explanatory diagram of transporting the base frame with a transport vehicle, Fig. 7 is an explanatory diagram of loading the base frame with upper revolving body onto the transport vehicle, Fig. 8 is a side view of Fig. 7, and Fig. 9 is a diagram of removing the base frame. An explanatory diagram, FIG. 10, is an explanatory diagram showing the transportation posture. l is the crane body, 2 is the upper revolving body, 3 is the swing wheel, 4t
! Base frame, 5 is an axle beam, 6 is a guide bin, 7 is a bolt, 8 is a crawler, 9 is a hydraulic cylinder, 10
is a jack cylinder, IIH bracket, 12H bottle,
13H float, 14 gantry, 15 crane,
16H transport vehicle, 17riW unit 18 is a block, 19H unit.

Claims (1)

[Scope of Claims] 1. A method for disassembling and transporting a large crawler crane, in which self-bladed blades are loaded onto a transport vehicle by performing steps 10 to (6) below. 111 Each of the four outer corners of the pace frame of a crawler crane has a base frame attached to the lower part of the upper revolving body via a slewing ring and an axle beam is connected to the base frame with bolts. Raise the bottom of the main body above the vehicle height of the transport vehicle and pull the transport vehicle under the crane main body.
(3) Contract the jack cylinder and lower the axle beam to the base frame by interposing a pedestal between the crane body and load No. 1 so that there is a slight gap between the axle beam and the loading platform of the transport vehicle. (4) Lift the crane body again using the middle cylinder, load the axle beam, pull out the friend carrier from under the crane body, and lower the axle beam to the transport vehicle. 15) Empty the crane body. Pull the carrier under the crane body, contract the shirt piece cylinder, and load the crane body onto the loading platform.◎ (6) Turn the upper revolving body t-90 degrees, and then remove the shirt cylinder from the pace frame.