JP2000233618A - Track working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To significantly reduce the collision of a projection on the ground with retractable cylinder by rockably mounting the retractable housing cylinder for vertically rotating a wheel for rail above the lower end of a lower running body with its longitudinal direction confronted vertically. SOLUTION: Cylinder brackets 18 are fixed to both lateral sides of the upper part of an outrigger device 3 mounted on the traveling directional front end of a lower running body 1, and retractable cylinders 11 are rockably mounted on the lateral cylinder bracket 18 with their longitudinal direction being turned vertically, respectively. In this case, about the center of the cylinder tube 11A of the retractable cylinder 11 is mounted on the cylinder bracket 18 by a pin to be rockable, and the rod 11B of the retractable cylinder 11 is protruded down. The protruding and housing cylinder 11 is mounted on the front upper part of the lower running body 1 so as to be located above the lower end of the lower running body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track work vehicle which travels on a rail of a railroad, moves to a work site, and repairs or repairs the rail or its periphery.

[0002]

2. Description of the Related Art A track work vehicle for performing repair work or the like on a railway rail or its periphery is provided with a lower traveling body having traveling wheels for traveling on the ground. A revolving body is provided so as to be revolvable, a work machine is mounted on the upper part of the upper revolving body, and a rail wheel for traveling on a rail in each of the front and rear directions of travel of the lower traveling body is turned up and down by an overhanging storage cylinder. The rail wheels were mounted movably so that they could be extended and retracted with respect to the undercarriage.

In this track work vehicle, as a mechanism for extending and storing the rail wheel, for example, Japanese Patent No. 27595
No. 71 has been known. In this method, a rotating frame plate that rotates vertically is attached to the front and rear of the lower traveling body in each of the front and rear directions, and rail wheels for running rails are mounted on the rotating frame plate. Further, an extension storage cylinder is attached to the lower side of the bottom of each of the lower traveling body before and after the traveling direction, with its longitudinal direction facing the front and rear of the traveling direction. By pivoting to the bottom of the body and pivoting the other end to the pivot frame plate, the pivot frame plate and rail wheels pivot up and down due to the expansion and contraction of the overhanging storage cylinder, and the lower traveling body It was designed to store overhangs.

[0004]

However, in the conventional track work vehicle, the extension storage cylinder for extending and storing the rail wheel protrudes downward below the bottom of the lower traveling body. Because it is arranged in a state, when traveling, especially when traveling on the ground with the rail wheels retracted, the overhang storage cylinder may collide with a protrusion on the ground and be damaged, and Similarly, peripheral members such as hoses piped to the cylinder for use may be similarly damaged, resulting in very poor safety. An object of the present invention is to provide a track work vehicle having a structure in which damage to the overhanging storage cylinder and its peripheral members is prevented.

[0005]

Means for Solving the Problems and Effects of the Invention
A lower traveling body having traveling wheels, a work machine is mounted on an upper portion of the lower traveling body, and a rail wheel for extending a rail for traveling on a rail in each of front and rear directions of traveling of the lower traveling body is extended and stored. In a railroad work vehicle mounted so as to be vertically rotatable, the overhanging storage cylinders for vertically rotating the rail wheels are longitudinally oriented in the front and rear directions of the lower traveling body, respectively. This is a track work vehicle that is swingably mounted above the lower end of the traveling body.

According to this, the overhanging storage cylinder is mounted vertically above the lower end of the lower traveling body, with the longitudinal direction thereof being oriented vertically, so that the traveling wheels, particularly the rail wheels, are stored and are mounted on the ground. When traveling, it is possible to significantly reduce the collision of protrusions on the ground with the overhanging storage cylinder, eliminate damage to the overhanging storage cylinder and its surrounding members, and improve safety. it can. In addition, since the overhang storage cylinder is not mounted below the bottom of the lower traveling body as in the conventional case, the space for mounting the overhang storage cylinder can be eliminated. ,
The lower traveling body can be lowered, and the center of gravity of the track work vehicle can be lowered to improve traveling stability during traveling.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a track work vehicle according to the present invention will be described. As shown in FIG. 1, the track work vehicle includes a lower traveling body 1.
Has running wheels 2 for running on the ground before and after the running direction, and has outrigger devices 3 attached to the front end and the rear end, respectively. Although not shown, the lower traveling body 1 includes a drive source such as an engine.
An upper revolving structure 4 is provided on the upper part of the lower traveling structure 1 so as to be freely rotatable. The working machine 6 is a crane device in which a boom 7 that can expand and contract is mounted so as to be able to move up and down, and a hook 8 that can be hoisted and lowered is attached to the end of the boom 7.

In the lower traveling body 1, a rail wheel 10 for traveling on a rail in each of the front and rear directions of the traveling direction is mounted to be freely rotatable up and down by an overhanging storage cylinder 11, so that the rail wheel 10 is mounted. The lower running body 1 is extended and retractable. Thus, when the rail wheel 10 is extended by the overhanging storage cylinder 11, the rail wheel 10 is located below the traveling wheel 2 and contacts the rail, so that the rail can travel. At the same time, when the rail wheel 10 is stored by the overhanging storage cylinder 11, the rail wheel 10 is located above the traveling wheel 2 so that the traveling wheel 2 touches the ground and can travel on the ground. become. A turntable 9 is provided below the center of the lower traveling body 1.
Is mounted so that the track work vehicle can be lifted by the turntable 9 and moved on a rail.

A mechanism for extending and retracting the rail wheel 10 in such a track work vehicle will be specifically described with reference to the rail wheel 10 mounted on the front side of the lower traveling body 1 in the traveling direction. As shown in FIGS. 2 and 3, a pair of mounting brackets 12 are fixed to the left and right sides of the lower traveling body 1 on the front side of the outrigger device 3 attached to the front end of the lower traveling body 1 in the traveling direction. 1
2 is an inner piece 12 having a substantially parallelogram shape located on the left and right inner sides.
A and a substantially triangular outer piece 12B located on the left and right outer sides. Then, support pins 13 are respectively spanned over the inner piece 12A and the outer piece 12B of the mounting bracket 12 fixed to the right and left, respectively, and the arms 14 are respectively mounted via the support pins 13 so as to be vertically rotatable. Arm 14 comprises a pair of triangular pieces 14A. The left and right arms 14 are fixed to a turning frame plate 15, and the turning frame plate 15 has substantially the same length as the left and right widths of the lower traveling body 1. Wheel holding brackets 16 are respectively provided on the left and right sides. The left and right wheel holding brackets 16 include an inner piece 16A located on the left and right inner sides and an outer piece 16B located on the left and right outer sides.
The inner pieces 16 of the left and right wheel holding brackets 16
An axle 17 is respectively bridged over A and the outer piece 16B, and the rail wheel 10 is attached to the axle 17. Although not shown, a drive motor for driving the rail wheel 10 is attached to the rotating frame plate 15. In this manner, the arm 14, the rotating frame plate 15, the rail wheel 10, and the like rotate up and down around the support pins 13 provided on the mounting bracket 12 on the front side of the lower traveling body 1.

On the other hand, on the upper part of the outrigger device 3 attached to the front end of the lower traveling body 1 in the traveling direction, a bracket 18 for a cylinder is fixed to each of the left and right sides. It is mounted so that its longitudinal direction can be swung vertically. This is because the center of the cylinder tube 11A of the overhanging storage cylinder 11 is attached to the cylinder bracket 18 with a pin 19 so as to be swingable, and the rod 11B of the overhanging storage cylinder 11 projects downward. To do it. Also,
The overhanging storage cylinder 11 is mounted on the front upper portion of the lower traveling body 1 so as to be located above the lower end of the lower traveling body 1, that is, so as not to protrude below the lower end of the lower traveling body 1. The ends of the rods 11B of the left and right overhanging storage cylinders 11 are attached to the left and right arms 14 with pins 20, respectively.
And the rail wheel 10 and the like can be turned up and down freely. Thereby, as shown in FIG. 2 and FIG.
1 and the rail wheel 10 is extended to allow the rail wheel 10 to travel on the rail,
As shown in (2), by retracting the overhanging storage cylinder 11 and storing the rail wheel 10, the traveling wheel 2 travels on the ground.

When the rail wheel 10 is extended and the rail travels, the upper surface of the rotating frame plate 15 is in contact with the lower surface of the outrigger device 3 of the lower traveling body 1, and the vehicle weight is reduced here. It can be supported and eliminates the burden on the overhanging storage cylinder 11.
A hole 21 is formed in each of the inner piece 12A and the arm 14 of the left and right mounting brackets 12 so that the fixing pin 22 can be inserted between the hole 21 of the mounting bracket 12 and the hole 21 of the arm 14. The arm 14, the rotating frame plate 15 and the rail wheel 10 are fixed when the rail wheel 10 is extended.

On the other hand, when traveling on the ground with the rail wheels 10 retracted, fixing brackets 23 are fixed to the front of the outrigger device 3 in the lower traveling body 1 on the left and right sides, respectively.
Holes 24 are also formed in the fixing bracket 23, and the fixing pins 22 can be inserted between the holes 24 and the holes 21 of the arm 14.
The arm 14, the rotating frame plate 15, the rail wheel 10, and the like when the “0” is stored are fixed. Further, a stopper 25 having an adjusting function is also attached to the front surface of the outrigger device 3 in the lower traveling body 1, and the arm 14 comes into contact with the stopper 25, so that the arm 14 and the rotating frame plate 15 are connected to the lower traveling body 1. Avoid collisions.

[0013] In the track working vehicle thus constructed, the projecting operation of extending the rail wheel 10 includes the rail wheel 1.
In a state where 0 is stored and the ground can be run by the traveling wheels 2, first, the track work vehicle is temporarily lifted by the turntable 9 attached to the lower center of the lower traveling body 1 of the track work vehicle. In the lifted state, the extension storage cylinder 11 is extended to extend the arm 14 and the rotating frame plate 1.
The rail wheel 10 is extended by rotating the rail 5 and the rail wheel 10 around the support pin 13 downward. And turntable 9
The track work vehicle is moved on the rail by means of, and the track work vehicle is gradually lowered by the turntable 9 so that the rail wheel 10 is brought into contact with the rail. In this manner, the rail wheel 10 is extended so that the rail can travel. Also,
As a storing operation for storing the rail wheel 10, the reverse of the above-mentioned overhanging operation is performed.

With this configuration, when traveling on the ground, particularly when the rail wheel 10 is stored, the collision of the protrusions or the like on the ground with the overhanging storage cylinder 11 is greatly reduced. However, damage to the overhanging storage cylinder 11 and its surrounding members can be eliminated, and safety can be improved. Further, since the overhang storage cylinder 11 is not attached to the lower side of the bottom of the lower traveling body 1 as in the related art, a space for mounting the overhang storage cylinder 11 can be eliminated. When traveling, the lower traveling body 1 can be lowered, and the center of gravity of the track work vehicle can be lowered to improve traveling stability during traveling.

Further, in such a track work vehicle, when the rail wheel 10 is extended and the rail travels, the distance between the rail wheels 10 before and after the traveling direction, that is, the dimension of the wheel base is determined by the Railway Law. Although it was strictly determined, as in the present invention, the overhanging storage cylinders 11 for vertically rotating the rail wheels 10 are attached to the front and rear of the lower traveling body 1 in the longitudinal direction, respectively, with the longitudinal direction thereof being vertically oriented. As a result, even when attached to an existing work vehicle, for example, a rough terrain crane vehicle, the size of the wheel base determined by the railway law can be easily made.

Further, as in the present invention, the overhanging storage cylinder 11 for vertically rotating the rail wheel 10 is attached to the front and rear of the lower traveling body 1 in the traveling direction, with the longitudinal direction thereof being vertically oriented. Thus, the space for mounting the overhanging storage cylinder 11 on the lower side of the bottom of the lower traveling body 1 can be eliminated, and the height of the rotating frame plate 15, the wheel holding bracket 16, and the rail wheel 10 can be reduced. This makes it possible to reduce the rotation trajectory of the rail wheel 10 when the rail wheel 10 is overhanging, and to reduce the lifting amount of the track work vehicle by the turntable 9 during the overhang operation. Work efficiency.

[Brief description of the drawings]

FIG. 1 is a side view for explaining a track work vehicle according to the present invention.

FIG. 2 is an enlarged side view illustrating a state in which rail wheels are overhanged in the track work vehicle according to the present invention.

FIG. 3 is an enlarged front view of FIG. 2;

FIG. 4 is an enlarged side view illustrating a state in which rail wheels are stored in the track work vehicle according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lower traveling body 2 ... Running wheel 3 ... Outrigger device 4 ... Upper revolving superstructure 5 ... Driver's cab 6 ... Work implement 7 ... Boom 8 ... Hook 9 ... Turntable 10 ... Rail wheel 11 ... Overhang storage cylinder 11A ... Cylinder tube 11B ... Rod 12 ... Mounting bracket 12A ... Inner piece 12B ... Outer piece 13 ... Support pin 14 ... Arm 14A ... Triangle piece 15 ... Rotating frame plate 16 ... Wheel holding bracket 16A ... Inner piece 16B ... Outer piece 17 ... Axle 18 ... Cylinder bracket 19 ... Pin 20 ... Pin 21 ... Hole 22 ... Fixing pin 23 ... Fixing bracket 24 ... Hole 25 ... Stopper

Claims (1)

[Claims] An undercarriage (1) having traveling wheels (2)
A work machine (6) is mounted on the upper part of the lower traveling body (1), and a rail wheel (10) for traveling on a rail is provided in each of the front and rear directions of travel of the lower traveling body (1). A track working vehicle, which is vertically rotatably mounted by an extension / retraction cylinder (11), comprising: an extension storage cylinder (11) for vertically rotating the rail wheel (10); A work vehicle for a track, characterized in that the longitudinal direction thereof is vertically oriented in each of the front and rear directions of (1) and that it is swingably mounted above the lower end of the lower traveling body (1).