JPS6040550Y2 - Large crawler crane that can be disassembled and transported - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a large crawler crane that can be disassembled and transported.

Large crawler cranes must be disassembled during transportation due to legal restrictions on weight and dimensions when transported on public roads.

Regarding this disassembly, it has conventionally been known to disassemble into three blocks: the main body consisting of the upper revolving body attached to the base frame, the crawler beam, and the crawler. A total of four cylinders are used, including two for removing and removing the crawler beam.

Therefore, the present invention is designed to provide a large crawler crane that can be disassembled into the main body, crawler beam, and crawler.
The disassembly can be performed using two cylinders, thereby reducing the cost of equipment for disassembly and reassembly.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a main body, which is constructed by mounting an upper revolving body 3 on a base frame 2.

4 and 5 are front and rear crawler beams, 6 and 7 are left and right crawlers, both crawler beams 4 and 5 are attached to the base frame 2 of the main body 1, and crawler 6.7 is attached to the crawler beams 4 and 5, respectively. It is removably inserted and connected.

In addition, the crawler 6.7 in this) is a side frame,
A general term that includes drive wheels, upper and lower rollers, etc. (individual illustrations are omitted).

Also, the terms "front and back" and "left and right" in this section refer to the directional relationship seen from the operator's cab 3a of the upper revolving structure 3.

On the other hand, there are four jacking devices, each consisting of a jacking cylinder 8a and a flow 8b removably attached to the lower end of the cylinder 8a. They are installed on both the left and right sides.

These four jacking devices allow the crane to be lifted with its own blades.

Reference numeral 9.10 denotes two cylinders for detachment, and the base ends of cylinder tubes 9a and 10a are attached to pins 12.12 through brackets 11.11 at the center of both left and right sides of the base frame 2.
The rod 9b is pivotably mounted to be rotatable about a vertical axis.
, 10b are connected to the crawler 6.7 and the crawler beams 4, 5 by pins 13, 13, depending on the order of disassembly.

14, 14 and 15, 15 are brackets for the front and rear crawler beams 4, 5 which are connected to the cylinders 9, 10 by this pin 13.13, and 16.17 is a bracket for the crawler 6.7.

Next, the procedure for disassembling this large crawler crane and loading it onto a transport trailer will be explained.

Prior to this disassembly, remove the crane's front attachment and counterweight (both not shown) from the main body 1.
At the same time, remove the crawler 6.7 travel motor piping, etc.

(a) As shown in FIGS. 2 and 3, the rod ends of the two demounting cylinders 9 and 10 are attached to the brackets 16.17 of the left and right crawlers 6°7 with pins 13.13.

(b) As shown in Figure 4, four jacking devices 8...
・Extend and lift the entire crane.

(C) Then, for example, the left crawler 6 is suspended by an auxiliary crane (only the hanging wire rope 18 and the hook 19 are shown in the figure), and in this state the left side desorption cylinder 9 is
is extended to remove the crawler 6 from the crawler beam 4.

) Regarding the right crawler 7, the right side desorption cylinder 1
0, remove it from the right side crawler beam 5 in the same manner as above.

(E) After that, as shown by the imaginary lines in FIG. Attach to brackets 15 and 15 with pins 13 and 13.

(f) As shown in FIG. 5, the upper revolving body 3 is rotated by 90° to align with the longitudinal direction of the crawler beams 4 and 5.

(g) Further extend the jacking device 8... and
After lifting the main body 1, a transport trailer T is moved directly under the main body 1.

(H) After inserting the board 20 between the main body 1 and the trailer T, the jacking device 8 is retracted and the main body 1 is placed on the trailer T.

(S) As shown in FIG. 6, with the crawler beam 4 suspended by an auxiliary crane, the crawler beam 4 is separated from the main body base frame 2 by simultaneously extending both cylinders 9 and 10.

(匈) Next, the cylinders 9 and 10 for both cylinders, which have been separated from the crawler beam 4 and reduced in size, are rotated 180 degrees so that the rear facing position and the waist rod ends are fixed to the brackets 15 and 15 of the rear crawler beam 5. ) in the same way as
The crawler beam 5 is removed from the main body base frame 2.

Incidentally, when removing the crawler beams 4, 5, the floats 8b of the jacking device are usually removed.

(l) After this, with the cylinders 9 and 10 for both cylinders reduced, the base frame 2 is moved as shown by the imaginary line in FIG.
Fix it in place.

In Fig. 3, 21.21 is the cylinder for desorption 9, 10.
Brackets for fixing the cylinder protruding from the cylinder tubes 9a and 10a, 22.22 are brackets protruding from both left and right sides of the base frame 2, 23.23 is the fixing pin, and 24.24 is a cylinder for removal and removal. It is a support rod for support.

(w) Finally, as shown in FIG. 7, the main body 1 is fixed to the trailer T with a wire rope 25 or the like to complete preparations for transportation.

Note that the steps (a) to (w) above are just examples, and the order of removing the left and right crawlers 6.7 and the order of removing the front and rear crawler beams 4, 5 may be reversed from the above case, etc. It goes without saying that the procedure may be changed as appropriate during actual work.

Further, the crane can be reassembled by following the above-described disassembly procedure in reverse.

As described above, according to the present invention, the main body, crawler beam, and crawler can be easily disassembled and reassembled using the two mounting/detaching cylinders. Compared to a crane that requires a total of four cylinders, the number of cylinders can be halved, and piping systems such as cylinder piping and switching valves can be simplified, and overall equipment for disassembly and reassembly can be simplified. This makes it possible to reduce costs and reduce costs.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a front view of the entire crane, Fig. 2 is an enlarged plan view with the upper revolving structure omitted, and Fig. 3 is an enlarged plan view of the entire crane.
Figure a is an enlarged cross-sectional view of the attachment part of the desorption cylinder; b is its longitudinal cross-sectional view; Figure 4 is a front view showing the claw pre-separation stage; FIG. 6 is a side view showing the crawler beam separation stage, and FIG. 7 is a front view showing the transport preparation state. 1...Main body, 2...Base frame,
3... Upper revolving body, 4, 5... Crawler beam, 6, 7... Crawler, butt...
Jacking device, 9, 10... Detachment cylinder,
12, 12... Vertical pin as the rotation center of the cylinder, 13, 13... Pin for connecting the cylinder to the crawler and crawler beam.

Claims (1)

[Scope of utility model registration request] A main body with an upper revolving body attached to a base frame, a crawler beam detachably connected to the base frame of this main body, a crawler detachably attached to this crawler beam, and a crawler beam attached to the crawler beam. It is equipped with a jacking device and two cylinders that are commonly used for attaching and detaching the crawler and crawler beam, and the cylinders are arranged on both left and right sides of the base frame, with one end facing the crawler and the other end facing the crawler beam. A large crawler crane that can be disassembled and transported, characterized in that it is rotatably pivoted around a vertical axis so that its posture can be changed.