JP2542104Y2 - Track work machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track working machine used, for example, for repairing railway tracks and their surroundings.

[0002]

2. Description of the Related Art Conventionally, as this type of track working machine, there is known a working machine equipped with a replaceable attachment such as a shovel type excavating mechanism and the like, which is provided with a track for running on the ground and wheels for running on a rail. ing.

For example, during excavator excavation or sleeper replacement work, the wheels are moved up by a vertical movement cylinder, and the crawler belt is placed on the ground beside two rails on both sides.
In this state, for example, excavation work or track bed replacement work of the railway line, etc., and when traveling on the rail for location movement, etc. It is configured to float away from the ground, drive the wheels in this state, and travel by rail.

[0004]

However, in the case of the conventional structure described above, when the working machine is used to tow a truck or another rail running vehicle, for example, or when another working vehicle is towed by the other track running vehicle, a traction force is required. However, the wheels rise due to the force of the vertical movement cylinder, which may cause the work unit to descend and come into contact with the bottom surface of the work unit, etc. There is a disadvantage that there is a possibility of connection.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve such inconvenience, and the gist of the present invention is to provide a work machine with a track for ground running and wheels for rail running, A rocking member is pivotally attached to the front and rear position in the traveling direction of the working machine by a vertically moving cylinder so as to be vertically rockable, the wheel is disposed on the rocking member, and a traction portion is disposed on the rocking member, A track working machine characterized in that a lock mechanism capable of fixing the position of the swing member is provided between the swing member and the work machine body side.

[0006]

[Function] At the time of excavation work, etc., when the swinging member is raised by the vertical movement cylinder, the wheel rises, the work machine body descends, the crawler belt comes into contact with the ground, and when traveling on the rail, When the swinging member is lowered by the vertical movement cylinder, the wheel is lowered, the wheel is mounted on the rail, the working machine floats up, the crawler is floated off the ground, and the rail is driven by driving the wheel in this state That is, during the towing operation, the rocking member is fixed in position by the lock mechanism between the rocking member and the work machine side, and in this state, the towing is performed by the towing portion.

[0007]

1 to 8 show an embodiment of the present invention, in which 1 is a working machine, and a lower traveling machine 1a and an upper turning machine 1 are shown.
b, the upper swing body 1b is provided on the lower traveling body 1a so as to be swingable around a swing shaft 1c by a swing operation mechanism including a gear mechanism (not shown), and in this case, a shovel-based excavating mechanism having a replaceable bucket 2a. Is provided on the arm 2c connected to the boom 2b, the support members 3 are disposed on both left and right sides of the lower traveling body 1a, the crawler body 4 is disposed on each support member 3, and the crawler body 4 is not shown. The hydraulic motor is connected to a hydraulic pump provided in the lower traveling body 1a by a hydraulic hose, and the crawler body 4 is wound around a track 5 for ground traveling, in this case, a rubber crawler. ing.

Reference numeral 6 denotes wheels. In this case, a mounting plate 7 is protruded at front and rear positions in the traveling direction of the lower traveling body 1a. Pivotally connected to the bottom of the undercarriage 1a and the swing member 8;
And a vertical cylinder 10 as a hydraulic cylinder is pivotally mounted between the upper and lower cylinders 1a.
The base 10 is pivotally attached to and protruded from a body-side pivoting portion 11 serving as a pin, and a rod 10a of a vertical movement cylinder 10 is pivotally connected to a swinging member 8 by a lower pivoting portion 12 serving as an axis. 10 at the time of the minimum reduction operation, the axle 6a of the wheel 6
Is arranged on the side of the body-side pivoting portion 11 by, for example, a distance L from the upper pivoting portion 9, and the rail traveling wheel 6 driven by a hydraulic motor (not shown) is attached to the swinging member 8. It is composed.

Reference numeral 13 denotes a lock mechanism which is provided between the swinging member 8 and the lower traveling machine body 1a serving as the work machine body 1 side.
In this case, a through-hole 14 is formed in the mounting plate 7 and a through-hole 15 is also formed in the swinging member 8. A boss tube 16 is mounted on the mounting plate 7 in accordance with the position of the through-hole 14. A key groove-shaped locking groove 17 is formed in the side plate of
Lock pin 1 that can be inserted and removed through both through holes 14 and 15
8 is formed, and a lock pin 18 is provided with a lock pin 19 that can be inserted into the lock groove 17.

Reference numeral 20 denotes a pulling portion. In this case, a pair of pulling plates 21 is attached to the swinging member 8 so as to face up and down, and a pulling pin 22 is inserted between the pulling plates 21, and a connecting rod is connected by the pulling pin 22. The other end of the connecting rod 23 is connected to a towing vehicle 24 such as a truck.

In this embodiment, the lock mechanism 13 is released and the lock mechanism 13 is released. For example, at the time of excavator operation, the vertical movement cylinder 10 is used as shown in FIG.
The rocking member 8 is swung upward about the upper pivotal attachment portion 9 by extending the rod 10a of the vehicle, the wheel 6 is raised, and the work machine body 1 is lowered thereby to move the crawler belt 5 to the two sides. The rails W are placed on the ground S beside the rails W, and in this state, for example, excavation work or track bed replacement work of a railway track is performed. By shrinking the rod of the moving cylinder 10, the swing member 8 swings downward around the upper pivot 9, and the wheels 6 are moved down and mounted on the rail W, whereby the working machine 1 is mounted. The crawler belt 5 is lifted up and separated from the ground. In this state, the wheels 6 are driven to travel on the rail.

In this case, the center of the axle 6a of the wheel 6 is arranged closer to the fuselage side pivoting portion 11 than the upper pivoting portion 9 by, for example, a distance L when the vertical movement cylinder 10 is in the minimum reducing operation. Therefore, the upward swing operation of the swing member 8 due to the weight or the like of the working machine body 1 can be prevented, so that even if there is an unavoidable oil leak, the working machine body 1 is prevented from descending. Thus, the safety of the rail running can be enhanced, and the downward swinging operation of the swinging member 8 is also prevented since the vertical movement cylinder 10 is in the minimum contraction operation state.

During the towing operation, the lock mechanism 13 between the swinging member 8 and the work unit 1 as shown in FIGS.
The rocking member 8 is fixed in position by the
, The vertical movement cylinder 10 can be prevented from elongating due to the traction force and the swinging member 8 can be prevented from rising, and the work unit 1 descends and the bottom surface of the work unit 1 comes into contact. Can be prevented, and safety can be improved.

Although the vertical movement cylinder has a structure using a hydraulic cylinder, other cylinder mechanisms may be employed, and the traction portion 20 may be installed on the front swinging member 8. It can be designed as appropriate.

[0015]

According to the present invention, as described above, the working machine is provided with a track for running on the ground and wheels for running the rail, and the swinging member is vertically moved by the vertical moving cylinder at the front and rear positions in the running direction of the working machine. The swing member is movably pivoted, the swing member is provided with the wheel, the swing member is provided with a traction portion, and the swing member is fixed in position between the swing member and the work machine side. Since the locking mechanism is provided with a possible locking mechanism, during the towing operation, the rocking member is fixed in position by the locking mechanism between the rocking member and the working machine side, and in this state, the towing unit can be towed, For this reason, the vertical movement cylinder can be prevented from being extended by the traction force, and the swinging member can be prevented from rising, and the accident that the working machine body descends and the bottom face of the working machine body comes into contact can be prevented,
Safety can be improved.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of the drawings]

FIG. 1 is an overall side view of an embodiment of the present invention.

FIG. 2 is a rear view of the embodiment shown in FIG. 1;

FIG. 3 is a partial rear view of the embodiment shown in FIG. 1;

FIG. 4 is a partial side sectional view of the embodiment shown in FIG. 1;

FIG. 5 is a partial side sectional view of the embodiment shown in FIG. 1;

FIG. 6 is a partially enlarged sectional view of the embodiment shown in FIG. 1;

FIG. 7 is an enlarged rear sectional view of the embodiment shown in FIG. 1;

FIG. 8 is a partial plan view of the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 5 Crawler belt 6 Wheel 8 Swinging member 10 Vertical movement cylinder 13 Lock mechanism 20 Towing part

Claims (1)

(57) [Scope of request for utility model registration] A work machine is provided with a track for running on the ground and wheels for running a rail, and a swing member is pivotally attached to a front and rear position in the running direction of the work machine by a vertically moving cylinder so as to be vertically swingable, The swing member is provided with the wheels, the swing member is provided with a traction portion, and a locking mechanism capable of fixing the position of the swing member between the swing member and the work machine is provided. A work machine for a track characterized by comprising.