JP2004149321A - Cab apparatus for working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cab apparatus for a working machine constituted to improve the safety of an operator in getting in and out of a cab in the working machine having a tower. <P>SOLUTION: The upper end of the tower 5 erected on a traveling body 4 is provided with a revolving superstructure 7 in a turnable manner so that one side in the longitudinal direction projects frontward from the tower. The working machine comprises a working front 8 on one side in the longitudinal direction of the revolving superstructure 7; the cab 16 disposed to project from a projecting part 7a of the revolving superstructure 7 and to abut on it; and link mechanisms 20, 21 provided between the revolving superstructure 7 and the cab 16. The working machine is also provided with a platform 60 having a tread face 60a provided at the outside part of the cab 16, and a handrail 60b provided at the tread face; and a platform 50 having a tread face 50a provided at the outside part of the projecting part 7a, and a handrail 50b provided at the tread face 50a. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to a cab device of a working machine suitable for harbor cargo handling work or scrap processing work for loading and unloading cargo on a ship.

  As a working machine for performing port cargo handling work, for example, a traveling body traveling on a quay, a revolving structure installed on the traveling body, and a cargo machine between a berthed ship and a quay for performing cargo handling work. 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 the berth or unload a load from the ship, but ships berthing on the 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 unit is installed on the tower, and a work front is installed on one side of the revolving unit so that loading and unloading of loads from the ship can be performed efficiently. At the same time, the cab is installed via a link mechanism, and the cab is configured so that the back of the cab contacts the front of the revolving superstructure, so that the amount of cab projecting forward becomes large, and the visibility of the bottom of the ship and the like is improved. It is possible to improve workability. However, when such a configuration is adopted, the cab is configured to be separated from the revolving structure, and thus there is a problem in that the safety of the operator when getting on and off the cab is reduced.

  An object of the present invention is to provide a cab device of a working machine having such a configuration that can improve the safety of an operator getting on and off the cab and moving between the revolving superstructure and the cab in the working machine having such a tower. With the goal.

In order to achieve the above object, the present invention provides a traveling body having a crawler track, a tower erected on the traveling body, and a pivotally provided at an upper end of the tower, one of which is provided on one side in a longitudinal direction. A revolving body having a protruding portion protruding to the side, a power source provided on the other longitudinal side of the revolving body, a work front provided on one longitudinal side of the revolving body, and the protruding portion of the revolving body A cab device for a working machine, comprising: a cab arranged to abut on the rotating body; and a link mechanism provided between the revolving structure and the cab,
The landing has a tread provided on an outer portion of the cab and a handrail provided on the tread, a tread provided on an outer portion of the projecting portion of the revolving structure, and a handrail provided on the tread. A cab device for a working machine, comprising a landing.

  According to the present invention, since landing sites having handrails are provided on the side of the cab that can be protruded forward by the link mechanism and on the side of the protruding portion of the revolving structure, the operator can get on and off the cab and turn through these landing sites. It is possible to move between the body and the cab in front of the body, and it is possible to improve the safety of the operator in getting on and off the cab.

  An embodiment of a working machine according to 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.

  Reference numeral 3 denotes a working machine of the present invention, and 4 denotes a traveling body that travels on the quay 1, and the traveling body 4 is formed of an endless track.

  Reference numeral 5 denotes a tower erected at the center on the traveling body 4, and the tower 5 has a height whose upper end is located above 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 in the longitudinal direction on the revolving unit 7 and other mounted 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. At 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 embodiment of the working machine of the present invention described above will be described.

  As shown in FIG. 1, when the load in the ship 2 berthing to the quay 1 is stacked on the quay, and the load on the quay 1 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.

  Thereby, the situation in the ship 2 can be easily monitored, and the cargo handling work is improved. 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, loading of cargo into the ship, and lifting and lowering of the deck of the ship caused by 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 hull, 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, work is performed. The stability can be improved, and the running stability at the time of changing the cargo handling location can also be improved.

  Further, since landings 60, 50 having handrails 60b, 50b are provided on the side of the cab 16 which can be extended forward by the link mechanism and on the side of the protruding portion 7a, the revolving structure 7 is connected to the landings 60, 50 through these landings 60, 50. It is possible to move between the cab 16 and the cab 16 in front of the cab 16, and it is possible to improve the safety of the operator getting on and off the cab 16 and moving between the revolving structure 7 and the cab 16.

  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 has been described. However, other working tools such as a lifting magnet and a grab can be used.

  The work front 8 may be a telescopic type or a part including a telescopic part.

It is a front view showing one embodiment of a work machine 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 structure that is provided rotatably at the upper end of the tower and has a protruding portion that protrudes on 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 body,
A cab arranged to abut the projecting portion of the revolving structure;
A cab device for a working machine including a revolving structure and a link mechanism provided between the cab,
The landing has a tread provided on an outer portion of the cab and a handrail provided on the tread, a tread provided on an outer portion of the projecting portion of the revolving structure, and a handrail provided on the tread. A cab device for a working machine, comprising a landing.

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