JP2752546B2 - Transportation method of loader front - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transporting a loader front of a large loader excavator for transporting the loader front separately from a main body.

[0002]

2. Description of the Related Art FIG. 4 shows a large loader excavator 1.
In FIG. 1, a loader excavator 1 includes a traveling body 2 and a revolving body 4 (2 to 4) connected to the traveling body 2 via a revolving device 3.
And a loader front 5 removably attached to the revolving unit 4.

The loader front 5 is provided with a boom 6 which is attached to the revolving unit 4 by a boom cylinder 13 so as to be able to move up and down.
An arm 8 attached to the boom 6 via a bracket 7 by an arm cylinder 14 so as to be vertically rotatable;
At the tip of the arm 8, the bucket 1 is rotatable around a pin 9.
0 is attached, and a bucket cylinder 18 for rotating the bucket 10 has one end connected to the bracket 7 by a pin 12 and the other end connected to each end of a link B19 and a link A20 by a pin 25. Link A2
The other ends of the pins 0 are pinned to the arm 8 and the bucket 10, respectively.

As shown in FIG. 5, such a large-sized loader excavator 1 has conventionally been constructed such that the traveling unit 2, the revolving unit 4 and the loader front 5 are separately transported, and assembled on site. In this case, the boom 6 and the arm 8 are angled while the piston B of the bucket cylinder 18 is retracted into the cylinder, and the link B19 and the link A20 are tied to the end of the arm 8 with the wire rope 21 or the like. It was mounted on a cargo bed 23 and transported.

[0005]

However, the link A2
0 is located below the line connecting the tip of the arm 8 and the tip of the boom 6, so that the base 2 is located below the link A20.
4 is required, and the loader front 5 becomes higher by the height of the table 24, so that there is a problem that the transportation height becomes higher.

The link A2 is connected to the wire rope 21.
0. Since the work of tightening the link B19 and the work of loosening the wire rope 21 is required, the disassembling work before transportation and the assembling work on site are very time-consuming and not easy.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of transporting a loader front in which a transport operation can be performed easily in a short time and the transport height can be reduced.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a boom mounted on a main body so as to be able to move up and down, and an arm connected to the boom so as to be vertically rotatable.
A bucket attached to the distal end of the arm, a link A having one end rotatably connected to the bucket, and one end rotatably connected to the other end of the link A and the other end connected to the arm A loader front including a link B rotatably connected to the loader front, and a bucket cylinder connected to the end of the boom side of the arm, and a connection portion between the link A and the link B; In the method of transporting a loader front, the bucket is detached from the arm and is detached from the link A, and the link A is connected to a lower surface of the arm using a connection tool with the bucket cylinder contracted. And the link A and the link B and the bucket cylinder are positioned on the lower surface side of the arm. Characterized by transporting the door in Yamagata state.

[0009]

In the present invention, the bucket is detached from the tip of the arm and detached from the link A. Then, the link A, the link B, and the bucket cylinder are positioned on the lower surface side of the arm by connecting to the lower surface of the arm with the connector while the bucket cylinder is contracted. In this state, the arm and the boom are placed on the trailer carrier and transported so as to form a mountain shape.

[0010]

Next, an embodiment of a method for transporting a loader front according to the present invention will be described. The same components as those of the conventional loader front shown in FIGS. 4 and 5 are denoted by the same reference numerals in the drawings, and redundant description will be omitted.

FIGS. 1 and 2 show the tip of the arm 8 and
The link mechanism 17 and a part of the bucket cylinder 18 are shown. In the same figure, in the middle part of the link A20,
A fitting bracket 26 is attached. Also,
The connecting member bracket 27 is also attached to the lower surface side of the arm 8. The brackets 26 and 27 for these fittings
As shown in FIG. 3, a connecting member 28 made of a wire, a rod, or the like and having hook members 32 connected to both ends thereof is stretched therebetween. Furthermore, brackets 29 and 30 for connecting tools are also attached to the end of the link B and the lower surface of the arm 8. Between these, the connecting device 3 shorter than the connecting device 28
Multiplied by one. In this state, the bucket cylinder 1
8 is located on the lower surface side of the arm 8 in the contracted state, and links A,
The link B is located on the lower surface side of the arm 8.

Next, a method of transporting the loader front will be described. The loader excavator 1 has a loader front 5 supported by the revolving superstructure 4 as shown in FIG. When the loader excavator 1 is transported from this state to a site or the like, the loader front 5 is divided from the revolving unit 4 and the main body including the revolving unit 4, the traveling unit 2, and the revolving device, and the loader front 5 are separately provided. Transport by trailer etc. and reassemble locally.

When transporting the loader front 5 on a carrier 23 of a trailer 22 (see FIG. 5), first, the bucket 10 is detached from the arm 8 and detached from the link A20. Then, the connection tool 28 is laid across the connection tool bracket 26 between the connection tool bracket 26 of the link A20 and the connection tool bracket 27 on the lower surface of the arm 8 with the bucket cylinder 18 contracted.
And the bucket cylinder 18 is positioned on the lower surface side of the arm 8. Further, the link B19 is connected to the lower surface side of the arm 8 using the connecting tool 31. In this state, as shown in FIG. 1, the link A and the link B are connected to the end of the arm 8 and the boom 6.
Is located above a line 33 connecting the ends of the two. next,
The arm 8 and the boom 6 are placed on the carrier 23 of the trailer 22 while maintaining the chevron state. As the means for maintaining the chevron state, as described in Japanese Utility Model Application Laid-Open No. 62-16151, a method of supporting the level cylinder 18 in the maximum extended state, a method of supporting the arm cylinder 14 in the maximum extended state, and There is.

According to this embodiment, the link A
20, the link B19 is tied to the arm 8 with a wire rope or the like, and the work of tightening the wire rope is not required, so that the transport work can be performed easily in a short time.

Further, since the link A20 and the link B19 are located on the lower surface side of the arm 8, there is no need to place a table below the distal end of the arm 8, unlike the related art. And the transportation height can be reduced.

Further, by connecting the link B19 to the lower surface of the arm 8, the link A20, the link B19, and the bucket cylinder 18 can be more reliably positioned on the lower surface of the arm 8.

In this embodiment, the link A20 is connected to the lower surface of the arm 8 by the connecting member 28, and the link B
The connector 19 is also connected to the lower surface of the arm 8 by the connector 31, but the link A20 may be simply connected to the lower surface of the arm 8 by the connector 28.

Further, in the present embodiment, the hooks 32 of the connecting tool 28 are connected to the connecting tool brackets 28, 2 during transportation.
9 was connected to the bracket 28, 2
9 to the arm 8 when not needed.
Alternatively, it may be connected to a bracket for a connector separately attached to the link A, and may be connected to a mating bracket when necessary. In this case, the connection tool 28 is not lost.

[0019]

As described above, according to the first aspect of the present invention, there is obtained an excellent effect that the transportation work can be performed easily in a short time and the transportation height can be reduced. Can be

According to the second aspect of the present invention, the link A, the link B, and the bucket cylinder can be securely held on the lower surface side of the arm.

[Brief description of the drawings]

FIG. 1 is a side view showing a link A and a link B at an end portion of an arm in one embodiment of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a front view showing a connector according to one embodiment of the present invention.

FIG. 4 is a side view showing a conventional loader shovel.

FIG. 5 is a side view showing the loader front mounted on a trailer carrier.

[Explanation of symbols]

 Reference Signs List 4 revolving superstructure 5 loader front 6 boom 8 arm 10 bucket 18 bucket cylinder 19 link B 20 link A 26, 27, 29, 30 bracket for connecting tool 28, 31 connecting tool

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02F 3/36 B60P 3/00 B66C 23/26

Claims (2)

(57) [Claims] A boom mounted on the main body so as to be able to move up and down, and an arm connected to the boom so as to be vertically rotatable;
A bucket attached to the distal end of the arm, a link A having one end rotatably connected to the bucket, and one end rotatably connected to the other end of the link A and the other end connected to the arm A loader front including a link B rotatably connected to the loader front, and a bucket cylinder connected to the end of the boom side of the arm, and a connection portion between the link A and the link B; In the method of transporting a loader front, the bucket is detached from the arm and is detached from the link A, and the link A is connected to a lower surface of the arm using a connection tool with the bucket cylinder contracted. And the link A and the link B and the bucket cylinder are positioned on the lower surface side of the arm. Loader front transportation method, which comprises transporting the door in Yamagata state. 2. The method for transporting a loader front according to claim 1, wherein the link B is connected to a lower surface of the arm using a connector.