JP2824705B2 - 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 a track working machine of this type, a working machine equipped with an exchangeable attachment such as a shovel type excavating mechanism is provided with a crawler belt for ground running and wheels for detachable rail running. It has been known.

For example, during excavator excavation or sleeper replacement work, the crawler belt is placed on the ground beside the two rails on both sides with the wheels removed from the working machine. When performing work, etc., and traveling on the rail for location movement, etc., attach the wheels to the work body, place this wheel on the rail, lift the crawler belt off the ground, separate it, and drive the wheel in this state It is configured to travel by rail.

[0004]

However, in the case of the above-mentioned conventional structure, it is troublesome to attach / detach wheels to / from the working machine.
The workability is reduced accordingly, and track work is usually performed between train passes, so it takes a lot of time to evacuate and escape to the side of the track, which has the disadvantage of reduced safety in an emergency. doing.

[0005]

The present invention SUMMARY OF] intended for the purpose of solving such a problem and has as its gist, lower
The upper swing of work aircraft consisting of a part vehicle body and the upper rotating aircraft
The aircraft is turned by the turning operation mechanism with respect to the undercarriage.
And a hydraulic motor on the undercarriage
A crawler belt for driving on the ground and wheels for rail running, and a swinging member pivotally attached to the front and rear positions of the lower traveling body in the traveling direction by an upper pivotable portion so as to be vertically swingable. The above-mentioned rail running wheels are arranged on the members, and swing
A vertical movement cylinder between the moving member and the body side pivoting portion and the lower pivot.
Pivotally mounted by the mounting part , and
Raise the wheel to put the track on the ground and move it up and down
Lower the cylinder by reducing the cylinder and place it on the rail
The crawler is provided so that it is separated from the ground
The center of the wheel axle is
A track work machine characterized in that the track work machine is arranged so as to be located closer to a fuselage side pivot portion than a landing portion .

[0006]

[Function] At the time of excavation work, when the swinging member is raised by the vertical movement cylinder, the wheels are raised, and the working machine body is lowered.
The crawler belt driven by the hydraulic motor will be grounded on the ground, and when traveling on the rail, the wheel will descend when the rocking member is lowered by the vertical movement cylinder, and the wheel is mounted on the rail working aircraft track leaves floated from the ground emerged, Ri Do to rail travel by driving a wheel by a hydraulic motor in this state, this time, vertical motion cylinder
Upper pivot portion center of the wheel axle at the minimum reduction during operation of the
Is located closer to the body side pivoting part than the
To prevent the upward and downward movements of the swing member.
Ing to the door.

[0007]

1 to 5 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.

In this embodiment, since the rod 10a of the vertically moving cylinder 10 is extended as shown in FIG. To move the wheel 6 to the raised position, thereby lowering the work body 1 to place the crawler belt 5 on the ground S beside the two rails W on both sides. Work and the like can be performed, and when traveling on the rail W for location movement or the like, the rocking member 8 is moved down by reducing the rod of the vertical movement cylinder 10 as shown in FIGS. It swings downward as the center, and the above-mentioned wheel 6 is lowered and mounted on the rail W, whereby the work body 1 is raised to separate the crawler belt 5 from the ground, and in this state, the wheel 6 is driven to run the rail. Can orbit It is possible to improve the workability it is possible to increase the safety of emergency is possible to reduce the evacuation escape time to the people.

In this case, the center of the axle 6a of the wheel 6 is disposed closer to the fuselage-side pivot portion 11 than the upper pivot portion 9 by, for example, the distance L when the vertical movement cylinder 10 is in the minimum contraction 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.

Although the above-mentioned vertical movement cylinder has a structure using a hydraulic cylinder, other cylinder mechanisms can also be employed, and are designed with appropriate modifications.

[0012]

According to the present invention, as described above, the hydraulic
A track member for ground running driven by a motor and wheels for rail running. A swing member is pivotally attached to the front and rear positions in the running direction of the working machine body so as to be vertically swingable. The wheels are arranged, and a vertical movement cylinder is pivotally mounted between the working machine body and the swinging member. Therefore, during excavation work, when the swinging member is raised by the vertical movement cylinder, the wheels rise. Then, the work machine descends and the above crawler belt comes into contact with the ground, and when traveling on the rail, the rocking member is lowered by the vertical movement cylinder, the wheel descends, and the wheel is mounted on the rail. The work unit then rises and the crawler tracks float away from the ground. In this state, the wheels are driven to travel on rails, reducing the time required for escape to the side of the track and improving safety in an emergency. And improve workability. At this time, the top of the vertical motion cylinder
At the time of small reduction operation, the center of the axle of the wheel is
It is located closer to the body side pivoting part than
Prevents upward swinging motion of rocking members due to the weight of industrial equipment
Can, for example, inevitably exist oil leaks
To prevent the work machine from lowering even if there is
Can improve the safety of rail running, and
The vertical movement of the rocking member is reduced by the vertical movement cylinder.
Since the operation is in the small operation state, the downward operation can be prevented .

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;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Traveling body 1a Lower traveling body 1b Upper turning body 5 Crawler belt 6 Wheel 6a Axle 8 Swinging member 9 Upper pivot part 10 Vertical movement cylinder 11 Body side pivot

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-122303 (JP, A) JP-A-4-321409 (JP, A) JP-A-4-321410 (JP, A) 74105 (JP, U) Hira 4-123702 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B60F 1/04

Claims (1)

(57) [Claims] A turning operation of an upper turning body of a working body comprising a lower running body and an upper turning body with respect to a lower running body.
A mechanism is provided to enable turning operation and a
It comprises a crawler belt for ground running and a wheel for rail running driven by a hydraulic motor, and a swing member is pivotally attached to the front and rear positions in the traveling direction of the lower traveling body by an upper pivot portion so as to be vertically swingable, Arranging the rail traveling wheels on the rocking member,
Fuselage the vertical motion cylinder between the lower traveling body and the swing member
Pivotally mounted by a side pivot portion and a lower pivot portion , and
Lift the wheels by extending the Linda and put the track on the ground
And lower the wheel by reducing the vertical movement cylinder.
The track is mounted on the rail and placed so that it is separated from the ground.
The axle of the wheel at the time of the minimum reduction operation of the vertical movement cylinder
Characterized in that the center of the work piece is arranged closer to the fuselage-side pivot portion than the upper pivot portion .