JPH04321410A - Working machine for railway - Google Patents

Abstract

PURPOSE:To enhance the safety and workability of a working machine for repairing railways and so forth, by journalling vertically swingable members to front and rear positions in the traveling direction in addition to ground traveling crawlers, so as to provide wheels thereto, and by journalling and laying vertical moving cylinders between a working machine body and the swingable members. CONSTITUTION:An under-carriage 1a is provided thereto with crawlers 5 and wheels 6 which are each attached to swingable members 8 that are attached to attaching plates 7 projected from the under-carriage 1a at front and rear positions in the traveling direction, by means of upper journalling parts 9 each composed of a shaft. Vertically moving cylinders 10 such as hydraulic cylinders are journalled and laid between the bottom section of the under-carriage 1a and the swingable members 8, and further, a rod 10a is journalled to a machine body side journalling part 11. With this arrangement, each of the wheels 6a comes to a position nearer to the machine body side journalling part 11 by a predetermined distance L when the cylinders 10 are retracted to its minimum length.

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, in repairing railway tracks and their surroundings.

0002

[Prior Art] Conventionally, this type of track working machine includes a working machine to which a replaceable attachment such as a shovel excavation mechanism is attached, and a track running track for ground running and removable wheels for track running. It has been known.

However, when excavating with a shovel or replacing sleepers, for example, the wheels are removed from the working machine and the tracks are placed on the ground on the sides of the two rails on both sides. When traveling on rails to perform work or move from place to place, wheels are attached to the work machine, the wheels are mounted on the rails, the tracks are lifted off the ground, and the wheels are driven in this state. It is configured to run on rails.

0004

[Problems to be Solved by the Invention] However, in the case of the above conventional structure, it is troublesome to attach and detach the wheels to the work machine.
Work efficiency is reduced accordingly, and since track work is usually done between passing trains, it takes a lot of time to evacuate to the side of the track, which reduces safety in an emergency. are doing.

[0005]

[Means for Solving the Problems] The purpose of the present invention is to solve such inconveniences, and its gist is that a working machine is equipped with tracks for running on the ground and wheels for running on rails, A swinging member is pivotally attached to the front and back positions of the work machine in the traveling direction so as to be able to swing vertically, the wheels are disposed on the swing member, and a cylinder for vertical movement is pivotally mounted between the work machine and the swing member. A track working machine is characterized in that it is constructed by being mounted on an erected structure.

[0006]

[Operation] During excavation work, etc., when the swinging member is raised by the vertical movement cylinder, the wheels will rise, the work machine will descend, and the above-mentioned crawler tracks will be in contact with the ground. When the swinging member is lowered by the vertical movement cylinder, the wheels are lowered, and the wheels are mounted on the rails, and the work machine floats up, and the tracks float off the ground. In this state, the wheels are driven to travel on the rails. It turns out.

[0007]

[Embodiment] Figures 1 to 5 show an embodiment of the present invention, in which 1 is a working machine, including a lower traveling machine 1a and an upper swinging machine 1.
The upper swinging machine body 1b is provided on the lower traveling machine body 1a so as to be able to swing around the swing axis 1c by a swinging operation mechanism consisting of a gear mechanism (not shown), and in this case, a shovel-type excavating mechanism having a replaceable bucket 2a. An attachment 2 is provided on an arm 2c connected to a boom 2b, and support members 3 are disposed on both left and right sides of the lower traveling body 1a,
A crawler body 4 is disposed on each support member 3, a hydraulic motor (not shown) is disposed on the crawler body 4, and this hydraulic motor and a hydraulic pump provided on the lower traveling body 1a are connected by a hydraulic hose. A crawler track 5 for ground running, in this case a rubber crawler, is wrapped around the track 4.

Reference numeral 6 denotes a wheel, in which a mounting plate 7 is protruded from the front and back positions of the lower traveling body 1a in the running direction, and a swinging member 8 is attached to the mounting plate 7 so as to be vertically moved by an upper pivot portion 9 consisting of a shaft. The bottom of the lower traveling body 1a and the swinging member 8 are pivotally connected to each other so as to be swingable.
A vertical movement cylinder 10 serving as a hydraulic cylinder is pivotally installed between the vertical movement cylinder 1 and the lower traveling body 1a.
The base of the vertical movement cylinder 10 is pivotally connected to and protrudes from the body side pivot part 11, and the rod 10a of the vertical movement cylinder 10 is pivotally connected to the swinging member 8 by the lower pivot part 12, which is a shaft. During the minimum reduction operation of 10, the axle 6a of the wheel 6
The center of the wheel is disposed closer to the fuselage side pivot part 11 by a distance L than the upper pivot part 9, and wheels 6 for running on rails driven by a hydraulic motor (not shown) are attached to the swinging member 8. It is composed of

Since this embodiment has the above-mentioned configuration, for example, when working with a shovel, the swinging member 8 is swung upward about the upper pivot portion 9 by extending the rod 10a of the vertical movement cylinder 10 as shown in FIG. The wheels 6 are moved to a raised position, and the working body 1 is thereby lowered to place the crawler tracks 5 on the ground S on the sides of the two rails W on both sides, and in this state, for example, excavation work or railway track bed replacement When traveling on the rail W for carrying out work or moving from place to place, etc., the swinging member 8 is moved from the upper pivot portion 9 by contracting the rod of the vertical movement cylinder 10 as shown in FIGS. 3 and 4. The center swings downward, and the wheels 6 are lowered to be placed on the rails W, thereby raising the working body 1 and releasing the crawler tracks 5 from the ground. In this state, the wheels 6 are driven to run on the rails. This makes it possible to reduce the time required for evacuation to the side of the track, thereby increasing safety in an emergency and improving work efficiency.

In this case, the center of the axle 6a of the wheel 6 is disposed closer to the fuselage-side pivot portion 11 by a distance L than the upper pivot portion 9 when the vertical movement cylinder 10 is in the minimum contraction operation. Therefore, it is possible to prevent the upward swinging movement of the swinging member 8 due to the weight of the work machine 1, etc. Therefore, even if there is an unavoidable oil leak, for example, the work machine 1 is prevented from descending due to this. This makes it possible to improve the safety during running on the rail, and the downward swinging motion of the swinging member 8 is also prevented since the vertical motion cylinder 10 is in the minimum contracted state.

[0011] Although the above-mentioned vertical movement cylinder has a structure using a hydraulic cylinder, other cylinder mechanisms can also be adopted, and the design can be changed as appropriate.

0012

Effects of the Invention As described above, the present invention comprises a working machine body equipped with crawler tracks for running on the ground and wheels for running on rails, and a rocking member is pivotably pivoted at the longitudinal position of the working machine body in the running direction. The wheels are arranged on the swinging member, and a cylinder for vertical movement is pivotally installed between the work machine and the swinging member. Therefore, during excavation work, etc. When the movable member is raised, the wheels will rise, and the working machine will descend and the crawler tracks will touch the ground.When traveling on the rails, when the swinging member is lowered by the vertical motion cylinder, the wheels will descend. However, the wheels are mounted on the rails, the work machine floats up, the tracks float off the ground, and in this state the wheels are driven to travel on the rails, reducing the time for evacuation to the side of the track. This makes it possible to increase safety in emergencies and improve work efficiency.

[0013] As described above, the intended purpose can be fully achieved.

[Brief explanation of 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]

1. Traveling aircraft 5 Tracks 6 Wheels 8 Swinging member 10 Vertical movement cylinder

Claims (1)

[Claims] Claim 1: A working machine body is equipped with crawler tracks for running on the ground and wheels for running on rails, a swinging member is pivotally mounted to the front and back positions of the working machine in a running direction so as to be swingable up and down, the swinging member A track work machine, characterized in that the above-mentioned wheels are disposed on the work machine, and a vertical movement cylinder is pivotally mounted between the work machine body and the swinging member.