JP2509038B2 - Ballast work vehicle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ballast work vehicle for excavating ballast (crushed stone) laid on a railroad track.

[0002]

2. Description of the Related Art A railroad track is under the sleepers of a track, absorbing noise and vibration generated by a railroad vehicle traveling on the track,
Ballast (crushed stones) that functions to suppress them is laid. The ballast also hardens and loses elasticity every time the rail car travels, and its function deteriorates.

Therefore, as a part of track maintenance work for railway facilities,
Work such as ballast regeneration / replacement was performed as needed. In such a ballast operation, firstly, the ballast working car having a mechanism for excavating ballast is turned on. As such a ballast work vehicle, conventionally, an endless belt with excavating teeth is sunk under the sleepers from both sides of the track to bring the tips of each excavating tooth to near the middle of the track, and then to both sides of the track. There was one equipped with a pair of excavation mechanisms for scraping out ballast on both sides of the vehicle body (Japanese Patent Publication No. 37-76).
52, Japanese Patent Publication No. 1-14363).

[0004]

However, for example, the tunnel
There is a human passage between the upper and lower lines inside
I have. In addition, near the point, the point switching mode
Data and cables are buried. Therefore, the conventional
The method of excavation by inserting the excavation mechanism from both sides
On strike vehicles, inside such tunnels and near points
There is a problem that the ballast cannot be excavated.

Also, inside the tunnel, there is a leak from the tunnel wall.
The discharged groundwater is guided to the above-mentioned passage part, and this is drained at the bottom of the passage.
It is designed to drain from the water outlet. Because of this, Ballas
When excavating the toe, attach a slope θ as shown in Fig. 10.
I need to do it. The conventional ballast work vehicle has such a requirement.
I have not been able to meet my expectations.

There has been an idea of a ballast work vehicle in which an endless scraper is made to sneak from one side to below the track (Japanese Patent Laid-Open No. 63-122801), but there is a problem of strength. The present invention considers drainage in the tunnel
To be able to excavate the ballast
In addition to the first purpose, from one side while avoiding obstacles
Being able to drill ballast under orbit
Is the second purpose .

[0007]

A ballast work vehicle for achieving the first object is to insert an endless scraper type excavation mechanism capable of ascending , descending and horizontally rotating from the side of a track into a position below the track, in the ballast working car which is adapted scraped out into wayside drilled ballast under the track, the endless disk
Chill the lepper at the desired angle to the horizontal.
It is equipped with a steering mechanism, and the trajectory remains inclined to the horizontal plane.
It is characterized by enabling excavation of the lower ballast .

A ballast work vehicle for achieving the second object is the ballast work vehicle having the above-mentioned structure. Further, the endless scraper has a track width equal to or larger than itself.
It has a length and can be inserted by inserting it from one side of the track.
The ballast excavation for the entire road width is made possible and
Shift that shifts the edge scraper left and right with respect to the vehicle body
It is characterized by having a mechanism .

[0009]

The operation of the ballast work vehicle of the present invention is
Perform excavation while tilting the end scraper with respect to the horizontal plane
be able to. Therefore, in the tunnel,
Endless scraper is tilted to lower the tip and excavated.
By doing, the drainage surface can be easily formed.

According to the ballast work vehicle of claim 2,
Then, in addition to the above-mentioned effects, there is no end from one side of the track.
Since a scraper can be inserted, there is an obstacle on one side of the track.
Conduct ballast excavation work even in tunnels, etc.
be able to. Moreover, the endless scraper itself
Being configured as having sufficient length, it is
It can be configured to have high strength. Also,
One reason why it can be configured like this is that it has a shift mechanism.
Also depends on. That is, equipped with a shift mechanism to avoid obstacles
Since it is possible to excavate while doing so, JP-A-63-1
Belt part is deformed like the one described in JP 22801
It is not necessary to make the
A simple endless scraper can be used.
Then, the shift mechanism allows the endless disc to be struck during ballast excavation.
Insert the tip of the lepper further and avoid obstacles.
Work while moving in the direction of extraction
be able to.

As a result of the above , as shown in FIG.
The shift mechanism enables continuous ballast excavation work while avoiding obstacles. In order to avoid such obstacles, a horizontal rotation mechanism can be used as shown in FIG. However, in the case of horizontal rotation, the excavation angle of the endless scraper greatly changes with respect to the traveling direction, and it is necessary to adjust the excavation speed. On the other hand, when avoiding the obstacle by the shift mechanism, the excavation angle remains constant and it is not necessary to adjust the excavation speed.

Further , as shown in FIG. 12, a tilt mechanism forms a drainage surface in the tunnel, and when the tunnel exits, normal horizontal excavation can be resumed and the work can be continued continuously.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. However, the present invention is not limited to the one example described in detail below, and includes all examples that can be conceived by those skilled in the art without departing from the gist of the present invention.

FIG. 1 is a front explanatory view of a ballast work vehicle 1 which is an embodiment of the present invention, and FIGS. 2 and 3 schematically show the side surface and the plane of the ballast work vehicle 1, respectively.
The ballast work vehicle 1 includes a ballast sieving device (not shown) for scraping ballast under the sleeper 5 fixed to the track 3 to the side of the track 3 and scraping it up through the transport mechanism (reproducing ballast and discarding ballast depending on the crushing degree of the ballast). It is a work vehicle that mechanically carries in the work of loading into a device for separating ballasts), and at the initial stage of ballast regeneration / replacement work,
It will be thrown into the work track.

The ballast work vehicle 1 is a mechanism for scraping the ballast under the sleeper 5 to the side of the track 3 and is mounted on the front surface of the vehicle body 18 as an embodiment. A mechanism for scraping up the ballast that has been scraped up to the side, and a scraping mechanism 13 as one embodiment mounted on the side of the vehicle body 18, and a mechanism for transporting the ballast scraped up by the scraping mechanism 13. And the conveyor belt conveyor 1 attached to the vehicle body 18 so as to be continuous with the upper end of the scraping mechanism 13.
5, and the vehicle body 18 connected to the conveyor belt conveyor 15
It is equipped with a ballast sieving device which is attached to the vehicle and a ballast sieving device equipped in a subsequent work vehicle (not shown) and a carry-out belt conveyor 17 for introducing the ballast into a hopper on a different track. Further, the ballast work vehicle 1 is equipped with a generator 19 with a hydraulic motor for supplying hydraulic pressure to various cylinders described in detail below.

FIG. 4 shows the excavation mechanism 11 in a partially omitted plane view. Further, a mounting portion of the excavation mechanism 11 to the vehicle body 18 is shown in FIG. 5 as an explanatory view seen from an arrow A in FIG. As shown in FIGS. 1 and 4, the excavation mechanism 11 is roughly classified into a mounting portion 2
0, the shaft portion 40, and the excavation portion 60. The attachment portion 20 is a mechanism for attaching the shaft portion 40 and the excavation portion 60 to the vehicle body 18, and the shaft portion 40 moves the excavation portion 60 between the holding position and the excavation position and transmits power to the excavation portion 60. The excavation unit 60 is a mechanism for excavating the ballast.

As shown in FIG. 1, the mounting portion 20 is mounted on the vehicle body 1.
A fixed frame 21 mounted rotatably on the front surface of the vehicle 8 about the traveling direction, and a shaft portion 40 to be described later by adjusting the amount of rotation of the fixed frame 21 with respect to the vehicle body 18 mounted between the fixed frame 21 and the vehicle body 18. Of the tilt cylinder 23 for adjusting the inclination of the vehicle body 18 with respect to the vehicle body 18, and a movable frame 25 which is attached to the fixed frame 21 so as to be slidable in the width direction of the vehicle body 18 and has a shaft portion 40 fixed to one end.
Consists of.

On the mounting side of the fixed frame 21 to the vehicle body 18, as shown in FIG. 5, a rotating shaft portion 31 having a short cylindrical shape is fixed. On the other hand, on the front surface of the protruding portion 33 that is fixedly provided on the front surface of the vehicle body 18, a cylindrical rotating boss portion 35 that is short in the axial direction is fixedly provided. The rotating shaft portion 31 is rotatably fitted in the rotating boss portion 35 via a bearing 37.

The tip end of the piston rod 23b of the tilt cylinder 23 is rotatably supported by a bracket 27 fixed to the lower portion of the fixed frame 21 so as to be rotatable about the traveling direction of the vehicle body 18, and the cylinder portion 23a thereof. The base end of is attached to the lower part of the front surface of the vehicle body 18 so as to be rotatable about the traveling direction of the vehicle body 18, and the amount of rotation of the fixed frame 21 with respect to the vehicle body 18 is determined according to the degree of expansion and contraction of the tilt cylinder 23. Has been

Further, two rod-shaped shift lots 29, 29 are fixedly mounted on the movable frame 25, and the respective shift lots 29, 29 are juxtaposed above and below the fixed frame 21 with the width direction of the vehicle body 18 as the axis. Two tubular bosses 2
It is slidably fitted into the inside of 2, 2 through a bush 22a. A seal 22b is attached to the inner peripheral end of the tubular boss 22 outside the bush 22a. Then, one ends of the shift lots 29, 29 are fixed to the shaft portion 40 side.

As shown in FIG. 1, the shaft portion 40 is fixed to one end of each of the shift lots 29, 29 and is a first tubular member which moves integrally with the shift lots 29, 29 in the width direction of the vehicle body 18. Fixed boss portions 41, 41 as a member, a rotary boss portion 43 as a second cylindrical portion penetrating through the fixed boss portions 41, 41 and rotatable about a vertical direction, and a rotary boss portion 43.
An elevating lot 45 as a third cylindrical portion that penetrates the inside and is relatively non-rotatable with respect to the rotating boss portion 43 and is slidable in the up-down direction, and excavating power fixed to the upper end of the elevating lot 45. A hydraulic motor 47 as a source, which is rotatably housed in the lifting lot 45 about the vertical direction, and for transmitting power from the hydraulic motor 47 to a sprocket gear 49 arranged outside the lower end of the lifting lot 45. A drive shaft 51, a lifting hydraulic cylinder 53 provided between the rotary boss portion 43 and the lifting lot 45 to lift the lifting lot 45, and the rotary boss portion 43 and the lifting lot 45 are integrally rotated about the vertical axis. Hinge portion 55 for

Between the fixed frame 21 and the rotary boss portion 43, a movable frame 25 is slid relative to the fixed frame 21 to move the shaft portion 40 in the width direction of the vehicle body 18. Hydraulic cylinder 24 for one shift
Is provided between the movable frame 25 and the rotary boss portion 43 by rotating the rotary boss portion 43 relative to the fixed boss portion 41 so that the tip end of the excavation portion 60 is centered around the shaft portion 40. A swiveling cylinder 39 for moving the excavating section 60 is provided as a rotating means so as to draw.

The fixed boss portions 41, 41 are two cylindrical members having a short axis and a large diameter. Part of the outer peripheral surface of each of them is connected to one end of each of the shift lots 29, 29, and they are arranged in the vertical direction. It is located on the same axis. The rotation boss 43 is
It has a cylindrical shape of a size penetrating through the fixed boss portions 41, 41 and protruding vertically, and a bearing is inserted between the inner peripheral surface of the fixed boss portions 41, 41 and the outer peripheral surface of the rotary boss portion 43. Is
They are rotatable with respect to each other in the up-down direction and are not relatively movable in the up-down direction. Further, a flange 43a is formed on the upper end of the rotating boss portion 43 so as to widen in the radial direction. The tip of the piston rod 24b of the first shift hydraulic cylinder 24 is attached to the outer peripheral surface of the rotary boss portion 43 between the two fixed boss portions 41, 41, and the cylinder base end portion 24a is tubular. The movable frame 25 is attached to the fixed frame 21 between the bosses 22 and 22, and the movable frame 25 slides in the width direction of the vehicle body 18 with respect to the fixed frame 21 by its expansion and contraction operation. Further, the base end 39a of the swing cylinder 39 is attached to the upper part of the movable frame 25, and the tip of the piston rod 39b is attached to a part of the flange 43a. The portion 43 rotates about the vertical direction.

The elevating lot 45 has a cylindrical shape of a size penetrating the inside of the rotating boss portion 43 and extending long in the vertical direction, and between the inner peripheral surface of the rotating boss portion 43 and the outer peripheral surface of the elevating lot 45. A bearing 43b is fitted into the shaft, and a seal 43c is attached to the outside thereof. Also lifting lot 45
The upper end of the outer peripheral surface and the flange 43a of the rotary boss 43 are provided with a hinge part 55 configured to be vertically expandable and contractable.
Each of both ends of the rotation boss 43 is attached to the rotation boss 43, and the rotation torque about the vertical direction applied to the rotation boss 43 is transmitted to the lifting lot 45 to integrally rotate the rotation boss 43 and the lifting lot 45 and to rotate the rotation boss. The lifting lot 45 that slides up and down with respect to 43 is supported. Further, the base end portion 53a of the lifting hydraulic cylinder 53 is connected to the flange 43a of the rotary boss portion 43.
It is attached to the end and its piston rod 53
The tip of b is attached to a part of the outer peripheral surface of the lifting / lowering lot 45 protruding from the lower end of the rotating boss 43 via the bracket 45a. Lot 45 slides up and down.

The drive shaft 51 is connected at a plurality of points by a universal joint 52, and a bearing 51a and a seal 51 are provided between the outer peripheral surface of the drive shaft 73 and the inner peripheral surface of the lifting lot 45.
The drive shaft 51 is rotatable about the up-down direction with respect to the lift lot 45 by inserting b. The upper end of the drive shaft 51 is connected to the rotary shaft of the hydraulic motor 47.

FIG. 6 shows a view taken along the line BB of FIG. As shown in FIGS. 1, 4, and 6, the excavation unit 60 includes a support unit 61 that is fixed to the lifting lot 45 and serves as a frame.
A pair of sprocket gears 49, 6 disposed near both ends of the support portion 61 and rotatable about the vertical direction.
3, a chain 65 that is hung between the sprocket gears 49 and 63 to rotate, and a scraper 67 and a bit 69 as excavating teeth fixed to the outer surface of the chain 65.

The supporting portion 61 is a long frame member, and one end thereof is fixed at a right angle to the lower end of the elevating lot 45 standing upright in the vertical direction and extends in the horizontal direction. The support portion 61 is
As shown in the cross section of FIG. 6, two long frame members having a V-shaped cross section are connected by a connecting member in the middle of the longitudinal direction. A chain 65 and a scraper 67 as the bottom portion 61a
Is supported from below, and the chain 6
Supports 5 slides. An adjusting plate 61c for adjusting the tension of the chain 65 is provided at the tip of the supporting portion 61.
Is provided so as to be movable between the side wall portions 61b, 61b of the support portion 61 from the tip end side toward the shaft portion 40 side.
Further, a bracket 71 for protecting the scraper 67 and the like protruding from the tip of the support portion 61 is formed on the upper portion of the tip of the support portion 61 so as to project.

The sprocket gear 49 is used for the lifting lot 45.
Is pivotally supported by the lower end of the drive shaft 51 facing the lower end of the drive shaft 51 and rotates integrally with the drive shaft 51. The sprocket gear 63 is pivotally supported by the adjustment plate 61c at the tip of the support portion 61 and is rotatable about the vertical direction. Therefore, the adjusting plate 61c
The sprocket gear 63 moves in accordance with the movement of the sprocket gear 63, thereby changing the distance between the sprocket gears 49 and 63 and adjusting the tension of the chain 65.

The chain 65 slides between the sprocket gears 49 and 63 along the outer periphery of the support portion 61 as the sprocket gear 49 rotates. By the sliding, the scraper 6 fixed to the outer surface of the chain 65
7 and bit 69 scrape the ballast.

A plurality of scrapers 67 are fixedly installed on the outer surface of the chain 65 at intervals. One bit 69 is fixed to each scraper 67, and as shown in FIG. 6, faces in any of the three directions of obliquely upward direction, horizontal direction, and obliquely downward direction. So three-way bit 6
9, all the ballasts of the surface layer, the middle layer and the lower layer can be excavated uniformly and the excavation efficiency is improved.

FIG. 7 shows a side surface of the raking mechanism 13 as seen from the side of the vehicle body 18, and FIG. 8 shows a plan view of the raking mechanism 13. The scraping mechanism 13 accommodates a mechanism for scraping ballast described later, and also a frame 75 for scraping and transferring the ballast to the conveyor belt conveyor 15 shown in FIGS. 2 and 3, and a scraping mechanism for scraping the ballast. A pair of sprocket gears 77 and 79, a chain 81, a scraper 83, a bit 85, and a drive motor 8 that is a drive source for driving the sprocket gear 79.
7, a belt for power transmission (not shown) that is hung between the drive motor 87 and the sprocket gear 79, as a lifting means for pressing the lower end of the frame 75 against the ballast surface and supporting the frame 75 with the fixed boss portion 41. Of the lift hydraulic cylinder 89 and the upper end of the frame 75 to the vehicle body 1
By supporting a shift portion 91 as a support arm that is supported to 8 and is expandable and contractible in the width direction of the vehicle body 18, and by adjusting the protruding length of the silt portion 91 attached to the shift portion 91 in the width direction of the vehicle body 18. A second shift hydraulic cylinder 95 for changing the distance between the frame 75 and the side surface of the vehicle body 18,
And a storage cylinder 99 which is provided between the shift portion 91 and the frame 75 and serves as a proximity / separation means for moving the shift portion 91 and the frame 75 close to or away from each other.

FIG. 9 shows an enlarged view taken along the line CC of FIG. The frame 75 is in the shape of a rectangular prism, and is arranged so as to incline upward from the front portion to the rear portion of the vehicle body 18. Both ends of the frame 75 are openings 75a and 75b. The opening 75a on the front side of the vehicle body 18 faces the ballast surface, and the opening 75b on the rear side of the vehicle body 18 is connected to the conveyor belt conveyor 15. ing. Further, as shown in FIG. 9, reinforcing columns 75c are provided in places between both side walls of the frame 75. Further, on the side wall of the frame 75, a plate-shaped guide portion 76 is formed so as to project inward so as to guide the scraper 83 that rotates in the frame 75 as described later. A resin sliding piece 76, which serves as a lubricating member for sliding the scraper 83, is provided on a surface of the guide portion 76 that abuts on the scraper 83.
a is attached. The upper surface of the frame 75 can be opened to the outside, and the upper surface and one side wall are hinged 74.
A locking portion 74b that is connected by a and is detachable from the other side wall is provided.

The sprocket gears 77 and 79 are rotatably supported by two support shafts 77a and 79a mounted in the width direction of the vehicle body 18 inside the openings 75a and 75b of the frame 75, respectively. . The chain 81 is stretched between two sprocket gears 77 and 79, and is rotated in the frame 75 by driving the sprocket gear 79.

A plurality of scrapers 83 are fixedly installed on the outer surface of the chain 81 with a space therebetween. As the chain 81 rotates, each scraper 83 rotates and scrapes ballast between the adjacent scrapers 83. It is transferred to the conveyor belt conveyor 15 along the bottom of the frame 75. Five bits 85, which are scraping claws, are attached to each scraper 83 to enhance scraping efficiency of the ballast (see FIG. 9).

The drive motor 87 is used for the sprocket gear 7
The frame 75 is supported and fixed to the side surface of the frame 75 at a position facing the frame 9 and protruding from the upper surface of the frame 75. A belt (not shown) is stretched between the drive motor 87 and the sprocket gear 79, and the upper side surface of the frame 75 is cut out at that portion. A belt cover 87a for protecting the suspended belt is attached to the side wall of the frame 75.

The lift hydraulic cylinder 89 has a cylinder base end portion 89a attached to a bracket 41a fixed to the fixed boss portion 41 so as to be swingable in the front-rear direction of the vehicle body 18, and a tip end of a piston rod 89b thereof is a frame. 7
5, the bracket 89c fixed to the upper end surface of the opening 75a
Is supported by the width direction of the vehicle body 18 as an axial center, and the hydraulic cylinder 89 for lift extends and contracts to open the opening 75 of the frame 75.
a and the ballast surface are separated from each other.

The shift portion 91 is provided in the opening 7 of the frame 75.
5b is a cylindrical shift boss portion 93a that is formed to project from the side surface of the vehicle body 18 above 5b, and is slidably disposed in the shift boss portion 93a and protrudes in the width direction of the vehicle body 18 from the tip of the shift boss portion 93a. And a mounting cylinder fixed to the tip of the shifting shaft portion 93b, the frame 75 being swingably mounted in the front-rear direction of the vehicle body 18 via the support arm 97. The part 93c.

The second shift hydraulic cylinder 95 provided in parallel with the shift portion 91 has its cylinder base end portion 95a fixed to the shift boss portion 93a, and the piston rod 9 thereof.
The tip of 5b is attached to the mounting cylinder portion 93c, and the second shifting hydraulic cylinder 95 expands and contracts to cause the shifting shaft portion 9 to move.
3b slides in the shift boss 93a to change the distance between the shift boss 93a and the mounting cylinder 93c, which changes the distance between the frame 75 and the side surface of the vehicle body 18.

In the storage cylinder 99, the cylinder base end portion 99a is attached to the middle of the upper surface of the frame 75, and the tip end of the piston rod 99b is attached to the attachment cylindrical portion 93c. It swings in the front-rear direction and the distance between the opening portion 75b side of the frame 75 and the shift portion 91 changes.

The ballast work vehicle having the structure described in detail above excavates and scrapes ballast in the following manner, and conveys it to the conveyor belt conveyor 15 and the conveyor belt conveyor 17 as a conveyor mechanism. That is, as shown by the chain double-dashed line in FIG. 2, first, at the working location, the scraping mechanism 13 is used to dig a hole having a size into which the excavation portion 60 of the excavation mechanism 11 is inserted, beside the track 3. The hole is dug to a depth such that the upper surface of the excavation portion 60 is located below the lower surface of the sleeper 5 when the excavation portion 60 is stored. Before digging the hole, by the first shift hydraulic cylinder 24 and the second shift hydraulic cylinder 95,
The excavation mechanism 11 and the scraping mechanism 13 are moved in the width direction of the vehicle body 18, and the shaft portion 40 and the frame 75 are respectively positioned above a predetermined position beside the track 3. Then, the storage cylinder 99 is extended to move the frame 75 downward, and the lift hydraulic cylinder 89 is extended to expand the frame 75.
By pressing the opening 75a against the ballast surface and rotating the drive motor 87 to rotate the chain 81, the scraper 83 and the bit 85 attached to the chain 81 scrape up the ballast on the side of the track 3. The ballast thus scraped up is transferred by the conveyor belt conveyor 15 and the conveyor belt conveyor 17 that are continuously provided in the opening 75b of the frame 75. By performing the above-mentioned scraping work while moving the vehicle body 18 on the track 3, a hole having a size into which the excavation portion 60 is inserted is formed on the side of the track 3. Then, the vehicle body 18 is moved to position the shaft portion 40 above the rear end of the hole. Swivel cylinder 39 at that position
To rotate the rotating boss portion 43 and the excavating portion 60,
The excavation part 60 is located above the hole. Then, the lifting hydraulic cylinder 53 is extended to lower the lifting lot 45, and the excavation unit 60 is lowered into the hole on the side of the track 3. With the excavation section 60 housed in the hole, the hydraulic motor 47 is operated to rotate the sprocket gear 49 and the chain 65 via the drive shaft 51 to excavate the ballast by the scraper 67 and the bit 69, while the swiveling cylinder 39 is moved. It is extended and the rotary boss 43 is rotated to swivel the excavation unit 60 below the sleeper 5 to proceed with the excavation (the movement of the excavation unit 60 is indicated by the alternate long and short dash line in Fig. 3; The rotation direction of the chain is indicated by arrow X in FIG.

The ballast excavated by the excavator 60 and scraped out to the vicinity of the shaft 40 is scraped up by the scraper 83 and the bit 85 in the frame 75 whose tip is located on the ballast surface, and is conveyed to the conveyor belt conveyor. Carried to fifteen. The excavation and scraping as described above are continued while the vehicle body 18 is advanced along the track 3 while the excavation section 60 is maintained at an appropriate turning position (or while appropriately turning), and the sleeper 5 Proceed with the ballast excavation work below.

In this embodiment, the rotary boss 43 inserted into the fixed boss 41, the lift lot 45 inserted into the rotary boss 43, the support 61 connected to the lower end of the lift lot 45,
Also, the excavation portion 60 and the shaft portion 40, which are constituted by a strong member such as a chain 65 with a scraper 67 that rotates around the outer periphery of the support portion 61, are fixed to the movable frame 25, and the fixed frame 21 is used to fix the front surface of the vehicle body 18. It has a structure with little bending or looseness that is attached to the. Therefore, according to the present embodiment, it is possible to easily realize a strong excavation mechanism that can scrape out ballast from one side of the track 3 with a large torque or at a high speed.

Further, in this embodiment, since the excavation mechanism 11 is attached to the vehicle body, the movable frame 2 to which the shaft portion 40 is attached is attached.
5 is slidably attached to the fixed frame 21,
The rotating shaft portion 3 fixed to the fixed frame 21 via the bearing 37 with respect to the rotating boss portion 35 attached to the front surface of the vehicle body 18.
1 has a structure in which the tilt of the excavation mechanism 11 as a whole with respect to the vehicle body 18 can be adjusted and supported by a tilt cylinder 23 provided between the fixed frame 21 and the vehicle body 18. The excavation mechanism 11 can be firmly attached to the.

Further, in this embodiment, the swiveling cylinder 39 is used.
Allows the excavation section 60 to freely swivel under the sleeper 5, and the tilt cylinder 23 allows the shaft section 40 and the excavation section 60 to be tilted in the vehicle width direction, so that the excavation section 60 slides along the outer periphery of the support section 61. The angle at which the scraper 67 and the bit 69 fixed to the outer surface of the chain 65 that come into contact with the ballast are highly flexible, and the angle is adjusted by the swiveling cylinder 39 and the tilt cylinder 23 so that the excavation reaction force exerted from the ballast to the tip of the excavating portion 60 is exerted. It can be mitigated.

In addition, in this embodiment, since the opening 75a of the frame 75 can be made to face the ballast surface by the hydraulic lift cylinder 89 and the ballast on the side of the track 3 can be scraped up, the excavation unit 60 is moved from below the sleeper 5. The ballast excavation / raising work of scooping the ballast excavated to the side of the track 3 and carrying it to the conveyor belt conveyor 15 can be quickly performed. Moreover, according to the scraping mechanism 13, if the scraping work is advanced and the frame 75 is lowered by the lift hydraulic cylinder 89, a long hole in a direction parallel to the track 3 can be formed beside the track 3. Therefore, according to the present embodiment, before the excavation work, a long hole capable of accommodating the excavation portion 60 is dug along the side of the track 3 and the excavation portion 60 is accommodated to store the sleeper 5
It is convenient to be able to make preparations for the excavation section 60 to go under.

Instead of the swing cylinder 39 of this embodiment, a gear mechanism that is rotationally operated by hydraulic pressure may be provided between the rotary boss portion 43 and the fixed boss portion 41. Further, instead of the hinge portion 55 of the present embodiment, a spline may be provided between the inner peripheral surface of the rotary boss portion 43 and the outer peripheral surface of the lifting lot 45.

Further, instead of the tilt cylinder 23 of this embodiment, a gear mechanism rotated by a hydraulic motor may be used.
In addition, instead of the lifting hydraulic cylinder 53 of the present embodiment, a rack and a pinion are provided respectively for the rotating boss portion 43 and the lifting lot 4.
It may be provided in between.

[Brief description of drawings]

FIG. 1 is a front view showing an excavation mechanism 11 in the front part of a ballast work vehicle 1.

FIG. 2 is a schematic side view of the ballast work vehicle 1.

FIG. 3 is a schematic plan view of the ballast work vehicle 1.

FIG. 4 is a plan view showing an excavation mechanism 11 at the front of the ballast work vehicle 1.

FIG. 5 is a side view taken along the arrow A in FIG. 1 in which a part of the side surface of the mounting portion 20 is cut away.

FIG. 6 is a cross-sectional view taken along the line BB of FIG. 4, showing a cross section of the excavation portion 60.

FIG. 7 is a side view in which a part of the scraping mechanism 13 is cut away.

FIG. 8 is a plan view showing a scraping mechanism 13 on a side portion of the ballast work vehicle 1.

9 is a cross-sectional view of the scraping mechanism 13, CC of FIG.
FIG.

FIG. 10 is an explanatory diagram of a drainage surface.

FIG. 11 is an explanatory diagram showing actions and effects of the present invention.

FIG. 12 is an explanatory diagram showing actions and effects of the present invention.

[Explanation of symbols]

11 ... excavation mechanism, 13 ... scraping mechanism,
18 ... Vehicle body, 19 ... Generator, 21 ... Fixed frame, 23 ... Tilt cylinder, 41 ... Fixed boss part, 43 ... Rotating boss part, 39 ... Swivel cylinder, 45 ... Lift lot, 53 ... Lift hydraulic cylinder, 51 ... Drive shaft, 47 ... hydraulic motor,
49, 63, 77, 79 ... Sprocket gears, 61 ... Supporting parts, 65, 81 ... Chains, 67, 83 ...
Scraper, 69, 85
…bit,

Claims (2)

(57) [Claims] 1. A ballast operation in which an endless scraper-type excavation mechanism capable of ascending , descending, and horizontal rotation is inserted from the side of the track to the bottom of the track to excavate the ballast under the track and scrape it to the side of the track. In a car, make sure that the endless scraper is at the desired angle to the horizontal plane.
Equipped with a tilt mechanism,
A ballast work vehicle characterized in that it enables excavation of ballast under an orbit as it is. 2. The ballast work vehicle according to claim 1, wherein the endless scraper has a length equal to or greater than a track width.
Hold the entire track width by inserting it from one side of the track.
A system that enables ballast excavation of the body and shifts the endless scraper left and right with respect to the vehicle body.
A ballast work vehicle equipped with a gear shift mechanism .