JP2004137085A - Maintenance device of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a maintenance device of a working machine having a tower, for performing inspection and maintenance on a device mounted on a revolving structure, whereby the release time for the working machine is reduced to improve the workability. <P>SOLUTION: The revolving structure 7 is swivellably provided on the upper end of the tower 5 erected on a traveling body 4 so that one side in the longitudinal direction is projected forward from the tower. The working machine includes: a cab 16 projected from a projecting part 7a of the revolving structure 7 and disposed to abut on a working front 8 on one side in the longitudinal direction of the revolving structure 7; and link mechanisms 20, 21 provided between the revolving structure 7 and the cab 16. The lower part of the revolving structure 7 in the tower 5 is provided with a platform 25 including a tread 25a having a length to reach a device mounted on the other side in the longitudinal direction of the revolving structure and a handrail 25b mounted on the outer periphery of the tread 25a. The inspection and maintenance for the device on the revolving structure 7 is performed using the platform 25. <P>COPYRIGHT: (C)2004,JPO

Description

{Circle over (1)} The present invention relates to a maintenance device for a working machine suitable for harbor loading / unloading work or scrap processing work for loading and unloading cargo on a ship.

As a working machine for carrying out port cargo handling work, for example, a traveling body traveling on a quay, a revolving structure installed on this traveling body, and a cargo machine between a berthed ship and a quay, Some include a multi-joint type working arm provided on a revolving body and a cab movably provided on the revolving body by a link mechanism so as to monitor the inside of a ship (for example, see Patent Document 1). .

European Patent Application Publication No. EP0969982A2.

In the work machine in the above-mentioned conventional technology, for example, it is possible to load a ship on a berth or unload a ship from the ship, but a ship berthing on a quay from small to large. Exists. In particular, when the ship is large, the rim of the ship is high, and the width and length of the ship are also large.

For this reason, in the above-mentioned prior art working machine, since the upper edge of the ship rises especially in the latter half of loading or unloading from a ship berthed on the quay, and at the time of the upper tide, the operation thereof is performed. Unfortunately, the cab on which the passengers board can only be located on the quay side of the berthing ship, and in particular, the cab side of the ship cannot be sufficiently monitored. As a result, in particular, it is currently impossible to efficiently load a large ship or unload a load from a ship.

Therefore, a revolving structure is installed on the tower so that loading and unloading of load from the ship can be performed efficiently, and a cab and a work front are installed on one side of the revolving structure. It is conceivable to install the power source and other devices on the other side. However, when such a configuration is adopted, there is a problem that inspection and maintenance of devices such as a power source are difficult.

According to the present invention, in a working machine having such a tower, inspection and maintenance of equipment mounted on a revolving superstructure can be performed, and as a result, a recovery time of the working machine can be shortened and workability can be improved. An object of the present invention is to provide a machine maintenance device.

In order to achieve the above object, the present invention provides a traveling body having a tracked crawler, a tower erected on the traveling body, and one end in a longitudinal direction at an upper end of the tower protruding forward from the tower. A revolving body having a protruding portion protruding on one side in the longitudinal direction, a power source provided on the other longitudinal side of the revolving body, and one side in the longitudinal direction of the revolving body. A work machine maintenance device comprising: a work front provided; a cab arranged to abut on the protruding portion of the revolving body; and a link mechanism provided between the revolving body and the cab. So,
The tread has a tread surface fixed to a lower portion of the revolving structure in the tower and having a length reaching equipment mounted on the other side in the longitudinal direction of the revolving structure, and a handrail provided on an outer periphery of the tread surface. A maintenance device for a working machine characterized by having a landing.

According to the present invention, a landing area having a length extending to a device mounted on the other side in the longitudinal direction of the revolving structure is provided at a lower portion of the revolving structure in the tower. Inspection and maintenance becomes possible. As a result, the recovery time of the working machine can be shortened, and the workability can be improved.

An embodiment of the working machine maintenance device of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an embodiment of a working machine according to the present invention. In FIG. 1, reference numeral 1 denotes a quay wall, 2 denotes a ship berthing to the quay wall 1, and 2a denotes a rim in the width direction thereof.

# 3 is a working machine of the present invention, 4 is a traveling body traveling on the quay 1, and this traveling body 4 is formed of a crawler track.

Reference numeral 5 denotes a tower erected at the center of the traveling body 4, and the height of the tower 5 is higher than the deck of the boat 2. Reference numeral 6 denotes a revolving device provided at the upper end of the tower 5, and reference numeral 7 denotes a revolving unit installed on the revolving device 6 such that one (front) side in the longitudinal direction projects horizontally from the tower 5. On one side (cab installation side) in the longitudinal direction of the revolving body 7, a protruding portion 7a is provided which protrudes further from the one side to the one (front) side.

Reference numeral 8 denotes a working front disposed on one side of the revolving body 7 in the longitudinal direction. In this embodiment, the working front 8 is mounted on the revolving body 7 by a hydraulic cylinder 9 so as to be able to move up and down. 10, an arm 12 attached to the end of the boom 10 by a hydraulic cylinder 11 so as to be vertically rotatable, and a fork 15 attached to the end of the arm 12 by a hydraulic cylinder 13 and a link mechanism 14 so as to be freely rotatable. It shows a case where iron swarf and scrap are loaded or unloaded on a ship 2 attached to a quay 1.

Numeral 16 denotes a cab arranged on the one side of the revolving structure 7, and the cab 16 is connected via a first parallel link 20, a second parallel link 21, and a relay bracket 22 connecting these parallel links 20, 21. It is attached to the revolving superstructure 7. The mechanism of the parallel links 20, 21 and the relay bracket 22 operates the cab 16 in a forward tilting manner, and the detailed configuration of this portion will be described later.

Reference numeral 23 denotes a hydraulic power unit including a motor and the like mounted on the other side of the revolving structure 7 in the longitudinal direction, and other devices. A landing 50 including a tread surface 50a and a handrail 50b is provided on a side of the revolving body 7 adjacent to the protruding portion 7a. A landing 51 including a similar tread surface 51a and a handrail 51b is formed on at least a side portion of the revolving structure 7. A landing 60 including a tread surface 60a and a handrail 60b is also provided on a side portion of the cab 16. Reference numeral 25 denotes a landing where a tread surface 25a is fixedly provided on the upper part of the tower 5 below the revolving structure 7, and 25b denotes a handrail provided on the tread surface 25a. The landing 25 has a length to reach the prime mover and other devices mounted on the revolving unit 7, thereby enabling easy inspection and maintenance of the devices mounted on the revolving unit 7. . 26 is a ladder for raising and lowering provided from the landing 25 downward.

2 and 3 show the details of the parallel link components used in the embodiment of the working machine according to the present invention. FIG. 2 shows the cab 16 extending forward of the revolving unit 7 by the parallel link mechanism. FIG. 3 shows a state where the cab 16 is retracted toward the revolving body 7 and is brought into contact with the protruding portion 7a of the revolving body. In these figures, the same reference numerals as those in FIG. 1 denote the same parts. The above-described first parallel link 20 includes two links 27 and 28. One end of each of the links 27 and 28 is attached to a bracket 31 fixed to the revolving unit 7 by pins 29 and 30, and the other end is connected to the bracket 31. It is connected to the relay bracket 22 by pins 32 and 33. A drive hydraulic cylinder 34 is mounted between the link 27 and the bracket 31 described above.

The second parallel link 21 includes two links 35 and 36 similarly to the first link 20 described above, and one ends of these links 35 and 36 are fixed to the cab 16 by pins 37 and 38, respectively. 39, the other ends thereof are connected to the relay bracket 22 by pins 40 and 41. A drive hydraulic cylinder 42 is mounted between the link 35 and the relay bracket 22 described above.

Next, the operation of the working machine according to the embodiment of the present invention will be described.

As shown in FIG. 1, when the load in the ship 2 berthing on the quay 1 is stacked on the quay and the load on the quay is loaded into the ship 2, the projecting portion 7a of the revolving unit 7 is hit as shown in FIG. An operator gets on the cab 16 installed in contact with the landings 50 and 60 from the landings 50 and 60. The operator monitors the load in the ship 2 or the load on the quay 1 and operates the work front 8 to perform work. . In this cargo handling operation, the cab 16 is moved by the first parallel link 20 and the second parallel link 21 from the revolving unit 7 as shown in FIG. It is positioned so as to protrude to the side.

This makes it possible to easily monitor the situation inside the ship 2 and to improve its cargo handling work. Further, since the cab 16 can be located at an upper position by the tower 5, the condition inside the ship 2 can be more easily monitored by the above-mentioned function of extending the cab 16 forward, and the cargo handling work can be performed. Significantly improved.

In addition, as shown by the two-dot chain line in FIG. 1, cargo handling shall be carried out in response to the loading of cargo on the quay, the loading of cargo into the ship, and the raising and lowering of the deck of the ship caused by the ebb and flow of the tide. Can be.

As described above, according to an embodiment of the working machine of the present invention, the above-described configuration of the tower 5 and the overhanging configuration of the cab 16 are particularly suitable when the ship is large, has a high rim, and is wide. It is.

Further, according to an embodiment of the working machine of the present invention, since the traveling body 4 is constituted by the crawler track, by moving and disposing the crawler track so as to be orthogonal to the quay, the work body 4 can be used at the time of work. The stability can be improved, and the running stability at the time of changing the cargo handling location can also be improved.

In addition, since a landing 25 having a length that extends to a device including a power source of the revolving structure 7 is provided below the revolving structure 7 in the tower 5, inspection of the equipment mounted on the revolving structure 7 from the landing 25 is performed. , Maintenance becomes possible. As a result, the recovery time of the working machine can be shortened, and the workability can be improved.

In the embodiment of the working machine of the present invention described above, the case where the fork is attached to the working front 8 is shown, but other working tools such as a lifting magnet and a grab can be used.

作業 Further, as the work front 8, a telescopic type or a type including a part of the telescopic part can be used.

It is a front view showing one embodiment of a work machine provided with a maintenance device of the present invention. FIG. 2 is a front view showing details when the parallel link mechanism used in the embodiment of the working machine of the present invention shown in FIG. 1 is extended. FIG. 2 is a front view showing details when the parallel link mechanism used in the embodiment of the working machine of the present invention shown in FIG. 1 is reduced.

Explanation of reference numerals

1 quay,
2 ships,
3 work machines,
4 running body,
5 tower,
6 turning device,
7 Revolving body,
7a protrusion,
8 Work front,
16 cabs,
20 first parallel links,
21 the second parallel link,
22 relay bracket,
23 hydraulic sources,
25 landing,
26 Ladder 50, 51, 60 Landing

Claims (1)

A traveling body having crawler tracks;
A tower standing on this vehicle,
A revolving body having a protruding portion that is provided at the upper end of the tower so that one side in the longitudinal direction protrudes forward from the tower, and that protrudes to one side in the longitudinal direction;
A power source provided on the other longitudinal side of the revolving body,
A work front provided on one longitudinal side of the revolving structure,
A cab arranged to abut the projecting portion of the revolving structure;
A maintenance device for a working machine, comprising: a link mechanism provided between the revolving superstructure and the cab;
The tread has a tread surface fixed to a lower portion of the revolving structure in the tower and having a length reaching equipment mounted on the other side in the longitudinal direction of the revolving structure, and a handrail provided on an outer periphery of the tread surface. A maintenance device for a working machine, comprising a landing.

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