JPS58125592A - Method of overhauling and transporting crawler in 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 Ria-2 using a large crawler crane.

Generally, large-sized O-9 cranes are often transported disassembled into a crane main body consisting of an upper revolving structure and a truck frame, and a crawler which is a traveling device, due to weight and size restrictions during transportation.

The method for disassembling and transporting this large crawler crane is as follows:
Various methods have been proposed and put into practice in the past, but these disassembly and transportation methods have a common problem. There was a frequent problem in which it was not possible to load the tsumashiflora with its own blade, which had to be lifted by a boom and loaded onto a transport vehicle.

The present invention addresses the above points! ! ! It is an object of the present invention to provide a method for disassembling and transporting crawlers in a large crawler crane, which allows the separated left and right crawlers to be loaded onto a transport vehicle by self-loading without using a crane.

In order to achieve this objective, the method for disassembling and transporting a crawler in a large crawler crane of the present invention is such that the crawler is provided with a hydraulic motor as a driving machine, and the crawler can be protruded from both the front and rear sides of the side frame, and to the side of the skeleton side frame. The jack mounting arm is rotatably mounted, a jack is attached to the free end of each jack mounting arm, and casters are provided on the movable part of each jack, and the crane body consisting of an upper revolving body and a truck frame is moved as appropriate. After the crawler is lifted up from the ground to a position IiI using the jacks, the jack mounting arm is rotated to apply tension to the side, and the jack of the jack mounting arm is extended to ground the caster. Support the shift roller, then extend the crawler telescoping cylinder to separate the left and right crawlers, reduce the above-mentioned jacks to ground the shift roller, and then connect the hydraulic motor of the crawler to the hose. It is characterized in that it is connected to a hydraulic power source through a hydraulic motor, and by driving the hydraulic motor, the sif roller is self-propelled and the blades are loaded onto a transport vehicle.

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is an overall side view of a large crawler crane, the second cause is between the planes of figure 1 excluding the upper revolving body, figure 3 is a side view of claw 2, and figure 4 is the view from arrow 310■-■ The figure shows. In the crane body, 4 is a boom attached to the upper revolving body 2. On both left and right sides of the track frame 3, crawlers 5A and 5B each having a hydraulic motor M as a drive machine and cylinders 6A and 6B for extending and contracting the crawlers 5A and 5B are respectively attached. The crawlers 5A, 5B and the cylinders 6A, 6B are connected by a bottle. A 4m long shirt Φ7 is attached to the front and rear of the truck frame 3 for lifting the crane main body l and crawlers 5A and 5B together. Here, the crawler refers to the side frame 8, driving wheels, and driven wheels. 9. Crawler belt 10. This is a general term that includes the upper roller 11, lower roller 12, etc.

Jacket attachment arms 14 are rotatably attached to both front and rear sides of each side frame 8 of the crawlers 5A and 5B via bins 13, respectively. In this embodiment, threaded rod type jacks 15 are respectively attached to the free ends of these jack mounting arms 14, and middle casters 17 are attached to the lower ends of the threaded rods 16 of each jack 15, respectively. Then, each jack mounting arm 14Fi is rotated to the side surface of the side frame 8 as shown in No. 4-.
By connecting the stay 18 to the side frame 8 and the jack mounting arm 14 at the position indicated by the solid line, the foot can be fixed at that position. Also, each jack mounting arm 1
4 can be fixed in that position by connecting the stay 19 to the side frame 8 and the jack mounting arm 14 at a position where the side frame 8 is extended to the side (the position of the imaginary line). There is. These stays and jack mounting arms 14. The side frame 8 is connected to the bin.

Next, a process in which the left and right crawlers 5A and 5B are separated and the blades are loaded onto a transport vehicle will be described.

As before, after removing the front attachment (poom 4, etc.) and counterweight W of the crawler crane from the crane body 1, as shown in Fig. 5, attach the shift crane body 1 to the Jatu+7 at the front and rear of the truck frame 3.
Raise the crawlers 5A and 5B until they are lifted off the ground. Next is the fifth factor.

As shown in FIG. 6, the jack mounting arm 14 attached to the side frame 8 of each crawler 5A, 5B is extended laterally, and the jack mounting arm 14 is fixed in that position via the stay 19, and each jack mounting arm 14 is fixed at that position via the stay 19. Arm 14 joke 1
Crawler 5 by extending caster 5 and grounding caster 17.
A, 5B, respectively, and crawler 5A.

Remove the hydraulic piping connecting the hydraulic motor M of 5B and the hydraulic power source inside the crane body 1 at the self-seal coupling part. After that, crawler expansion and contraction cylinders 6A and 6B
are sequentially extended to separate the crawlers 5A and 5B from the track frame 3. When separating the crawlers 5A and 5B, the crawlers 5A and 5B each have caster 1.
The stay 19 which fixes the jack mounting arm 14 while reducing the size of the shirt 35 of the jack mounting arm 14 and grounding the crawlers 5A and 5B. The jack mounting arms 14 are removed, the jack mounting arms 14 are rotated to the side of the side frame 8, and each jack mounting arm 14 is fixed in that position via a stay 18. Thereafter, as shown in FIG.
The hydraulic motor M of the other crawler 5B is connected to the hydraulic power source of the other crawler 5B via a long hose I, and the shiflorer is driven by the hydraulic motor M and loaded onto the transport vehicle 21. Next, the hydraulic motor M of the other crawler 5B and the hydraulic power source are connected. The crawler is connected via a hose, and the crawler is driven by itself and loaded onto the transport vehicle 21.

On the other hand, the crane body l with crawlers 5A and 5B separated
As shown in FIG. Check the position and then put on the shirt Φ7
is reduced and the crane body 1 is loaded onto the transport vehicle n.

Therefore, in the method for disassembling and transporting crawlers according to the present invention, the left and right crawlers 5A separated from the truck frame 3,
5B can be loaded onto a transport vehicle without using a crane all at once, and can be placed in a transport position.

As described above, according to the present invention, the left and right crawlers separated from the crane main body can be loaded onto a transport vehicle without using a crane, and the crawlers can be placed in a transport position.

[Brief explanation of the drawing]

The drawings are explanatory diagrams showing an embodiment of the method for disassembling and transporting a crawler in a large crawler crane according to the present invention. Fig. 1 is an overall side view of the large crawler crane, and Fig. 2 is a plan view excluding the upper revolving structure. , Figure 3 is a side view of the crawler, and Figure 4 is a side view of the crawler.
The figure is a view from the IV-IV arrow in Fig. 3, Figs. 5 and 6 are front and plan views showing the state of disassembly of the crawler, and Fig. 7 shows the state of loading the separated crawler onto a transport vehicle. FIG. 8 is a side view showing the state in which the crane main body with left and right crawlers separated is loaded onto a transport vehicle. ■... Crane body, 2... Upper revolving body, 3...
Truck frame, 5A, 5B...claw 9.6A,
6B... Crawler expansion/contraction cylinder, 8... Side frame, 14... Jacket mounting arm, 15... Jacket, 17... Caster, I... Hose, 21.
22... Transport vehicle, M... Hydraulic motor. Patent Applicant Hitachi Construction Machinery Co., Ltd. Agent Patent Attorney Seikyo Akimoto Figure 1 Figure 4 Figure 15 '17 5 Figure 5

Claims (1)

[Claims] A jack mounting arm that can extend to the side of the side frame is rotatably attached to both the front and rear sides of a side frame of a crawler equipped with a hydraulic motor as a drive rock, and a jack is attached to the free trail of each jack mounting arm. , the movable part of each jack is equipped with a caster, and after lifting the crane body consisting of an upper revolving body and a truck frame using appropriate jacks to a position where the crawler is lifted off the ground, the jack mounting arm is rotated. At the same time, extend the jack of the jack attachment arm and ground the caster to support the crawler, and then extend the crawler extension cylinder to separate the left and right crawlers. Then, by reducing each of the jacks mentioned above, the crawler is brought into contact with the ground, and then the hydraulic pressure upper to lower parts of o-9 are connected to a hydraulic power source via a hose, and the crawler is made to run on its own by driving the hydraulic motor. A method for disassembling and transporting a crawler in a large crawler crane, which is characterized by loading the crawler on a transport vehicle.