JPH09103751A - Falling mine cleaning device - Google Patents

Abstract

(57) [Summary] [Purpose] Falling stone cleaning that can easily break down strongly accumulated and solidified fallen minerals and can perform all cleaning work around the lower part of the conveyor including narrow areas with mechanical power. Getting the device. [Structure] A remote-operated low-floor loader 10 has a support arm 2 whose tip can be freely changed in the vertical direction in a vertical plane.
0 is attached via the horizontal rotation mechanism 21, and a cutting device 30 having a drill-shaped cutting blade 31 and a driving machine 32 for rotationally driving the cutting blade 31 at the tip of the support arm 20,
What is detachably attached to a discharge pipe 40 for sucking and removing the cutting pieces scraped by the cutting blade 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a falling ore cleaning device suitable for cleaning deposits that have fallen and solidified on the lower periphery of, for example, a conveyor for transporting minerals.

[0002]

2. Description of the Related Art Conventionally, a conveyor such as a belt conveyor, a stacker, or a reclaimer has been used as a means for conveying these minerals in a steel mill or the like which requires a large amount of iron ore, coal, limestone, coke and the like. . When a mineral such as iron ore is transported by using such a transport device, the powder particles attached to the surface of the belt sequentially drop while the belt travels on the return side, and are deposited and solidified around the lower portion of the transport device. In addition, local accumulation and solidification of powder particles is unavoidable at the transfer section of the belt conveyor. Since the deposited solidified matter will hinder the operation if left unattended, it is necessary to regularly remove and clean it.

Removal of the sedimented and solidified fallen minerals is carried out by excavation and scraping by a worker manually crushing with a pickaxe, chisel or the like and carrying out with a scoop, or mechanical equipment such as a bulldozer or a shovel car. It is carried out by using a suction nozzle, manually by using a suction nozzle, by using a mechanical device, or by washing with water. However, since the burden of manual work is too heavy, in recent years, a method of using a mechanical device that can be remotely operated by a controller has become widespread.

For example, in Japanese Unexamined Patent Publication No. 5-331816, a low floor loader which can be remotely operated to enter below a conveyor is used to support a nozzle portion of a flexible suction hose, and the nozzle portion of the flexible suction hose is provided in front of the nozzle portion. Disclosed is one in which a screw that intersects with the nozzle axis is provided integrally, and accumulated and solidified fallen minerals are accumulated in the nozzle part of the suction hose while being loosened using the conveyor function of the screw, and suctioned and removed by the suction hose. Has been done. In addition, JP-A-5-3
Japanese Patent No. 38706 discloses a low-bed loader that is remotely operated.
The nozzle part of the flexible suction hose is supported via an arm having freedom in the up / down and left / right directions, and the tip of the nozzle part is integrally provided with a collapsing device made of a sharpened steel rod, By displacing the pushing device up and down by pivoting around the joint part of the arm,
It is disclosed that a sharpened rod body is struck against a sedimented and solidified mine ore to be crushed, fragmented, and suctioned and removed by a suction hose.

[0005]

However, in the case where the removal of fallen minerals is carried out by using a mechanical device such as a bulldozer or a shovel car, the area under the conveyor is narrow and the narrow part is left behind. Will end up. In addition, a low floor loader supports a nozzle portion of a flexible suction hose, and a screw for accumulating fallen minerals in the nozzle portion of the suction hose is provided integrally with the nozzle portion (Japanese Patent Laid-Open No. 5-331).
No. 816) has the advantage that it can enter below the conveyor, but the screw has only the function of the conveyor, and therefore has the drawback that it cannot be applied to the removal of strongly accumulated and solidified fallen minerals. Furthermore, unless the low-floor loader enters below the conveyor, the work of removing fallen minerals cannot be performed, so the narrow part where the low-floor loader cannot enter due to the complicated posts of the conveyor is left behind. In addition, the low floor loader supports the nozzle portion of the flexible suction hose via an arm having flexibility in the vertical and horizontal directions,
A disintegrating device is integrally provided at the tip of the nozzle part, and the vertical movement of the disintegrating device by pivoting causes the accumulated and solidified mine ore to be smashed and removed by suction (Japanese Patent Laid-Open No. Hei 5).
No. 338706), since the arm does not have a telescopic function, unless the low bed loader enters below the conveyor, it is not possible to remove the fallen minerals and the low bed loader enters. Impossible narrow spaces are inevitably left behind. Further, in order to push out the sedimented and solidified rock ore, it is necessary to move the push-down device up and down, but it is difficult to secure the stroke of the up-and-down movement in the working space under the conveyor where the height is limited. It took a long time to break down the fallen rocks that had accumulated and solidified.

In view of the above points, the present invention is capable of easily breaking down strongly accumulated and solidified fallen minerals, and can perform all cleaning work around the lower part of the conveyor including the narrow part by mechanical force. The aim is to obtain a possible falling mine cleaning device.

[0007]

According to a first aspect of the present invention, there is provided a falling mine cleaning apparatus which is a self-propelled low floor loader which can be remotely operated to enter under a conveyor, and a horizontal rotation of the low floor loader. It has a support arm that is attached via a mechanism and the tip of which can change its direction back and forth and up and down in a vertical plane, and a drill-shaped cutting blade and a drive that rotationally drives the cutting blade. And a discharge pipe having a suction port disposed near a cutting edge of the cut-off device and detachably attached to a distal end portion of a supporting arm, and a discharge pipe. Is located around the suction port of the
The blade is provided with a blade that guides the cutting piece cut by the cutting edge to the suction port, and a suction device connected to the discharge port side of the discharge pipe.

Further, in the falling mine cleaning device according to the second aspect of the present invention, the cutting edge of the cutting blade is formed in a straight chevron shape, and each land portion continuous to the cutting edge is provided on the front side surface in the rotation direction. A curved surface is provided to scoop the cutting pieces.

Further, in the falling ore cleaning device according to the third aspect of the present invention, the discharge pipe is provided with an ejection hole for ejecting gas from the front end portion toward the rear end portion thereof. .

[0010]

According to the first aspect of the present invention, for example, in order to remove the deposits and solidified solidified and solidified in the narrow space under the conveyor, first, the shredding device and the discharge pipe are attached to the tip of the supporting arm on the low floor loader side. Put on. Next, the support arm is extended, the low-floor loader is run in that state, and the cutting blade of the supporting arm tip is brought closer to the accumulated solidified material to be removed, while the driving blade rotates and drives the cutting blade. Vacuuming around the cutting edge is started by the suction device. In this state, the low-floor loader is further advanced, and the cutting edge is pressed against the accumulated solidified material. As a result, the accumulated solidified material is scraped by the cutting blade, and the cutting pieces are sucked and discharged from the suction port of the discharge pipe. The cutting pieces scattered around are captured by the blade, guided by the suction port and sucked and discharged. If the accumulated fallen minerals have not solidified, attach only the discharge pipe to the tip of the support arm on the low-floor loader side, bring the suction port close to the fallen minerals as described above, and Inhale and expel. In this way, the supporting arm attached to the remotely operated low-floor loader is detachably attached to the crushing device having the drill-shaped cutting blade and the driving device for rotationally driving the cutting blade, and the discharge pipe, so that It is possible to easily cut and discharge the sedimented and solidified fallen minerals. Furthermore, the support arm is attached to the low floor loader via a horizontal rotation mechanism, and the tip of the support arm is configured to be freely changeable in the front-back and up-down directions in the vertical plane, so that the conveyor lower part including the narrow part can be lowered. It is possible to perform all the surrounding cleaning work with mechanical power, and it is possible to expand the work area where cleaning can be performed without moving the low floor loader.

Further, in the invention of claim 2 of the present invention, the cutting edge of the cutting blade is formed in a straight mountain shape, and the cutting piece is curved on the side surface on the front side in the rotation direction of each land portion continuous with the cutting edge. Since the surface is provided, it is possible to scoop off the cut pieces of the accumulated solidified material scraped by the cutting edge by the curved surface and prevent the scattered pieces in the radial direction.

Further, according to the third aspect of the present invention, since the ejection pipe is provided with the ejection hole for ejecting gas from the front end portion toward the rear end portion, the suction force from the suction port. In addition to being able to increase, the cutting pieces of the accumulated solidified matter that have been sucked and conveyed to the downstream side of the ejection hole can be pressed in the conveying direction from behind by the ejection gas. The synergistic effect of the suction action of the suction device can greatly improve the transport (discharge) efficiency. Therefore, even if a large (or heavy) cutting piece is sucked into the flexible discharge pipe, it does not remain in the middle of the discharge pipe and can be smoothly transferred.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a front view showing an overall configuration of a falling slag cleaning apparatus according to an embodiment of the present invention, FIG. 2 is a front view showing an arrangement relationship between a shredding device and a discharge pipe, which are essential parts, and FIG. FIG. 4 is a side view seen from the front side of FIG. 4, FIG. 4 is a side view seen from the rear side of FIG. 2, FIG. 5 is an enlarged cross-sectional view of the ejection hole portion which is the main part, and FIG. Figures and 7 are A of FIG.
8 is a plan view of FIG. 6, FIG. 9 is a view of B of FIG.
FIG. 10 is a plan view of the low floor loader with only the discharge pipe attached, and FIG. 11 is a front view of FIG.

The falling mine cleaning device of this embodiment is a self-propelled low-floor loader 10 that can be remotely operated by the controller 1 and can enter under the conveyor 2, and a horizontal rotation mechanism 21 on the low-floor loader 10. The support arm 20 is attached and has a tip portion that can change its direction forward and backward and up and down in a vertical plane, and a drill-shaped cutting blade 31 and a driving machine 32 that rotationally drives the cutting blade 31. The disintegration device 30 detachably attached to the distal end portion through the attachment 70, and the suction port 41.
Is disposed in the vicinity of the cutting blade 31 of the shredding device 30, and has a flexible discharge pipe 40 detachably attached to the distal end portion of the support arm 20, a suction port 41 of the discharge pipe 40, and a cutting device of the shredding device 30. A vehicle-mounted type that is connected to the outlet of the discharge pipe 40 and a basically rectangular funnel-shaped blade 50 that is arranged around the blade 31 and guides the cutting pieces cut by the cutting blade 31 to the suction port 41. And a suction device 60.

More specifically, the self-propelled low-floor loader 10 is set to have a low overall height as shown in FIGS. 10 and 12, and can be driven by a crawler type suspension device 11. Also, the frame 12 of the suspension device 11
A suction duct 40A extending in the axial direction of the vehicle body is attached to one side on the upper side, and the front end of the suction duct 40A is connected to the connector 4
2a allows connection to the discharge pipe 40 side, and the rear end of the suction duct 40A can be connected to the suction device 60 side by a connector 42b with one touch.

As shown in FIGS. 10 and 12, the support arm 20 has a horizontal rotation mechanism 21 on the frame 12 of the undercarriage device 11.
It is composed of a link mechanism attached via. One end of the link mechanism is the rotary shaft 2 of the horizontal rotary mechanism 21.
A first link 24a connected to the bracket 22 on the 1a side by a pin joint 23a, and a second link 24b having one end connected to the tip of the first link 24a by a pin joint 23b.
A third link 24c whose one end is connected to the tip of the second link 24b by a pin joint 23c, a bracket 25 provided on the bottom side at the base end of the first link 24a, and a rod side on the tip side of the first link 24a. A fourth cylinder 24a axially coupled to the fourth link 24d attached to the pin joint 23b, a fifth side link attached to the fourth link 24d on the bottom side, and a pin joint 23c on the tip side of the second link 24b on the rod side. 24e, the second cylinder 26b axially connected to each, and the bottom side to the fifth link 24e,
A third cylinder 26c axially coupled to a sixth link 24f attached to the tip of the third link 24c via a pin joint 23d on the rod side, and a bottom side below the turning shaft 21a side of the horizontal turning mechanism 21. Protruding bracket 27
And a fourth cylinder 26 axially connected to a bracket 28 provided on the rod side at the tip side of the first link 24a.
The attachment 70 at the front end is configured to be position changeable in the front-back and up-down directions in the vertical plane by the link mechanism, and the horizontal rotation mechanism 21 is provided.
The position can be changed in the horizontal plane by rotating the rotating shaft 21a by a driving unit (not shown).

The crushing device 30 comprises a driving machine 32 composed of an orbit motor, and 60 to 120 rp by the driving machine 32.
It is composed of a drill-shaped cutting blade 31 driven at a rotation speed of m. As shown in FIGS. 6 to 9, the drill-shaped cutting blade 31 has a solid spherical block body radially divided along the central axis into several equal parts, and in the present embodiment, eight divided into equal parts at point symmetric positions. Small block bodies 33, 34 divided and arranged in two places
In addition, it has a basic shape with a slight twist to the rear in the rotation direction toward the base end side. And, at the tips of the respective small block bodies 33, 34, straight-shaped (having a chevron shape when viewed in FIG. 6) cutting edges 35, 36 are formed, respectively, and each land portion continuous with each cutting edge 35, 36, that is, Curved surfaces (hereinafter referred to as first curved surfaces) 33a and 34a for scooping the cutting pieces are provided on the side surfaces on the front side in the rotation direction of the small blocks 33 and 34, respectively. Further, the fins 37, 38 having second curved surfaces 37a, 38a continuous with the first curved surfaces 33a, 34a are respectively provided on the base end sides of the twisted small block bodies 33, 34. It is formed integrally in the direction. In this embodiment, these fins 3
7, 38 and the small block bodies 33, 34 with their shaft portions 39.
Was integrally molded by casting including. The second curved surface 37a,
The fins 37, 38 having 38a change the flow direction of the cutting pieces of the deposited solidified material that are scraped by the cutting edges 35, 36 and scooped by the first curved surfaces 33a, 34a and flow toward the shaft center side to the shaft outer peripheral side. , The cutting pieces are the first curved surfaces 33a, 34a
It has a function to prevent it from staying inside.

As shown in FIGS. 1, 10 and 11, the discharge pipe 40 has a first pipe 40a detachably attached to the tip of the support arm 20 via an attachment 70, and a first end at a first end.
The second pipe body 40b connected to the rear end of the pipe body 40a by the connection connector 42c and the other end thereof to the suction duct 40A on the low floor loader 10 side by the connection connector 42a.
And the third, fourth and fifth pipe bodies 40c, 40d, 40e arranged between the suction duct 40A and the suction device 60 and connected by the connection connectors 42b, 42d, 42e, respectively. It can be connected with one touch.

Further, the discharge pipe 40 is provided at the rear end portion of the first pipe body 40a, that is, at the connection connector 42c mounting portion, as shown in FIG.
As shown in Fig. 8, the ejection holes 43 extending rearward of the tube axis are
Ports 44 for introducing compressed air are formed in the connecting connector 42c at positions corresponding to the ejection holes 43, respectively.

As shown in FIGS. 2 and 3, the blade 50 is formed by notching the upper side portion and the upper portions of both side sides, and the rear portion of the cutting blade 31 of the cutting device 30 is accommodated in the notch portion 51. It has become. This allows the fins 37,3
It is possible to receive the cut pieces of the deposited and solidified material discharged from No. 8 in the lower and lateral directions, and to scoop off the unsolidified deposit in the lower side portion 52.

The suction device 60 is equipped with a suction blower (not shown) and a filter for separating the mineral and air to be sucked therein.

In the falling mine cleaning apparatus of this embodiment, for example, in order to remove the solidified and solidified falling mine in a narrow space under the conveyor, first, the attachment 70 of the supporting arm 20 on the low floor loader 10 side is cut into pieces. 30 and the first pipe body 40a of the discharge pipe 40 are attached. Next, the first, second, and fourth cylinders 26a, 26b, and 26d are retracted, and the third cylinder 26c is extended, so that the support arm 20 as shown in FIG.
And the cutting edge 31 of the shredding device 30 is directed toward the accumulated solidified material. While driving the low-floor loader 10 toward the accumulated solidified material to be removed in this state, the cutting machine is rotated by the driving machine 32, and the blower of the suction device 60 is driven to evacuate the vacuum around the cutting blade 31. Start, and further introduce compressed air from each port 44 of the connector 42c,
The first pipe 40a is ejected toward the rear of the pipe axis from the ejection holes 43. In that state, the low-floor loader 10 is further advanced, and the cutting edge 31 is pressed against the accumulated solidified material. As a result, the accumulated solidified material is scraped by the blade edges 35, 36 of the cutting blade 31.
The scraped cutting pieces are scooped by the first curved surfaces 33a, 34a of the respective land portions which are continuous with the respective cutting edges 35, 36 and flow toward the axial center side, and further, the second curved surfaces 3 of the respective fins 37, 38.
The flow direction is controlled to be changed to the outer peripheral side of the shaft by 7a and 38a, and the fins 37 and 38 fall into the blade 50 from the rear part and are vigorously sucked and discharged from the suction port 41 whose suction force is increased by the introduction of compressed air. To be done. The cutting pieces scattered around are also captured by the blade 50, guided by the suction port 41, and sucked and discharged. At this time, the cutting pieces sucked from the suction port 41 and conveyed to the downstream side of each of the ejection holes 43 are pushed in the conveying direction from behind by the ejected gas to be further urged, and remain in the discharge pipe 40. Instead, it is conveyed to the suction device 60.

When the unsolidified fallen minerals are removed, as shown in FIGS. 10 and 11, only the discharge pipe 40 or the blade 5 is attached to the attachment 70 of the support arm 20.
0 and the discharge pipe 40 may be attached to directly suck and remove the fallen minerals.

As described above, the falling mine cleaning device of this embodiment is
Support arm 20 attached to a remotely operated low floor loader 10.
In addition, since the cutting device 31 having the drill-shaped cutting blade 31 and the driving machine 32 that rotationally drives the cutting blade 31 and the discharge pipe 40 can be detachably mounted, the solidified and solidified fallen rocks Can be easily cut and discharged.

A link mechanism is adopted for the support arm 20,
This link mechanism is used for horizontal rotation mechanism 2 with respect to low floor loader 10.
Since it is attached via 1 and its tip can be changed back and forth and up and down in the vertical plane, all the cleaning work around the lower part of the conveyor including the narrow part can be performed by mechanical force. It is possible to expand a work area where cleaning can be performed without moving the low floor loader 10.

Further, the cutting edges 31 and 36 of the cutting edge 31 are formed in a straight chevron shape, and the first curved surface for scooping a cutting piece on the side surface on the front side in the rotation direction of each land portion continuous with the cutting edges 35 and 36. 33a and 34a are provided, and the second curved surface 33a and 34a that is continuous with the first curved surfaces 33a and 34a in the axial direction behind
Since the fins 37 and 38 having the curved surfaces 37a and 38a are arranged, the cutting pieces of the accumulated solidified material scraped by the cutting edges 35 and 36 are scooped by the first curved surfaces 33a and 34a, which are released. It is possible to prevent scattering in the shooting direction, and remove the scooped cutting piece from the first curved surface 33.
a, 34a second curved surface 37a extending to the outer peripheral side of the shaft,
38a can be smoothly flowed, which can prevent the cutting pieces from staying in the first curved surfaces 33a and 34a.

Further, in the first tubular body 40a portion of the discharge pipe 40,
Since the ejection hole 43 for ejecting the compressed air toward the rear of the pipe axis is provided, the suction force from the suction port 41 can be increased, and at the same time, the deposition that has been sucked and conveyed to the downstream side of the ejection hole 43. The solidified cutting pieces can be pressed from the back in the transport direction by the jet gas, and the synergistic action of the pressing action of the jet gas and the suction action of the suction device 60 can greatly improve the transport (discharge) efficiency. Therefore, even if a large (or heavy) cutting piece is sucked into the flexible discharge pipe 40, it does not remain in the middle of the discharge pipe, and the transfer can be smoothly performed.

In the above-mentioned embodiment, the blade 50 formed in the shape of a rectangular funnel has been described as an example, but it may be a blade 50A having a cylindrical funnel shape as shown in FIGS. 12 and 13. Even in such a case, the same operational effect as that of the above-described embodiment can be obtained.

[0029]

As described above, according to the invention of claim 1 of the present invention, a drill-like cutting blade and a drive for rotationally driving a cutting blade on a support arm attached to a remotely operated low floor loader. Since the shredding device having a machine and the discharge pipe can be detachably attached, it is possible to easily shred and discharge the strongly accumulated and solidified fallen minerals. Furthermore, since the support arm is attached to the low floor loader via a horizontal rotation mechanism, and the tip of the support arm can be freely changed in the vertical plane in the front-rear direction and the up-down direction, the lower part of the conveyor including the narrow part can be surrounded. It is possible to perform all the cleaning work of (1) by mechanical force, and it is possible to expand the work area where the cleaning can be performed without moving the low floor loader.

Further, according to the invention of claim 2 of the present invention,
In addition to forming the cutting edge of the cutting edge into a straight chevron,
Since a curved surface that scoops the cutting piece is provided on the side surface on the front side in the rotation direction of each land part that is continuous with the cutting edge, the cutting piece of the accumulated solidified material scraped by the cutting edge is scooped by the curved surface, and this scatters in the radial direction. Can be prevented.

According to the invention of claim 3 of the present invention,
Since the discharge pipe is provided with an ejection hole for ejecting gas from the inner tip toward the rear end, the suction force from the suction port can be increased and the gas is sucked and is downstream of the ejection hole. The cut pieces of the accumulated solidified material that have been transported to the side can be pressed from the back in the transport direction by the jet gas, and the transport (discharging) efficiency is increased by the synergistic effect of the pressing action of this jet gas and the suction action of the suction device. Can be improved. Therefore, even if a large (or heavy) cutting piece is sucked into the flexible discharge pipe, it does not remain in the middle of the discharge pipe and can be smoothly transferred.

[Brief description of the drawings]

FIG. 1 is a front view showing the overall structure of a falling mine cleaning device according to an embodiment of the present invention.

FIG. 2 is a front view showing a positional relationship between a shredding device and a discharge pipe, which is a main part of the present embodiment.

FIG. 3 is a side view seen from the front side of FIG.

FIG. 4 is a side view seen from the rear side of FIG.

FIG. 5 is an enlarged cross-sectional view of an ejection hole portion that is a main part of this embodiment.

FIG. 6 is a front view of a drill-like cutting blade of a shredding device which is a main part of this embodiment.

7 is a view as viewed in the direction of the arrow A in FIG. 6;

FIG. 8 is a plan view of FIG. 6;

9 is a view as viewed in the direction of arrow B in FIG. 8;

FIG. 10 is a plan view of the low floor loader in which only the discharge pipe is attached to the apparatus of this embodiment.

FIG. 11 is a front view of FIG. 10;

FIG. 12 is a front view of a shredding device portion showing another example of the blade of the device of this embodiment.

FIG. 13 is a side view seen from the front side of FIG.

[Explanation of symbols]

 1 Controller 2 Conveyor 10 Low Floor Loader 20 Support Arm 21 Horizontal Rotating Mechanism 30 Shredding Device 31 Drill Cutting Edge 32 Drive Machine 33, 34 Small Block Body (Land) 33a, 34a First Curved Surface (Curved Surface) 35, 36 Blade edge 37a, 38a Second curved surface (curved surface) 40 Discharge pipe 41 Suction port 43 Spout hole 50, 50A Blade 60 Suction device 70 Attachment (tip part)

[Procedure amendment]

[Submission date] April 25, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

More specifically, the self-propelled low-floor loader 10 has a low overall height as shown in FIGS . 10 and 11 , and can be driven by a crawler-type suspension device 11. Also, the frame 12 of the suspension device 11
A suction duct 40A extending in the axial direction of the vehicle body is attached to one side on the upper side, and the front end of the suction duct 40A is connected to the connector 4
2a allows connection to the discharge pipe 40 side, and the rear end of the suction duct 40A can be connected to the suction device 60 side by a connector 42b with one touch.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

As shown in FIGS. 10 and 11 , the support arm 20 has a horizontal rotation mechanism 21 attached to the frame 12 of the undercarriage device 11.
It is composed of a link mechanism attached via. One end of the link mechanism is the rotary shaft 2 of the horizontal rotary mechanism 21.
A first link 24a connected to the bracket 22 on the 1a side by a pin joint 23a, and a second link 24b having one end connected to the tip of the first link 24a by a pin joint 23b.
A third link 24c whose one end is connected to the tip of the second link 24b by a pin joint 23c, a bracket 25 provided on the bottom side at the base end of the first link 24a, and a rod side on the tip side of the first link 24a. A fourth cylinder 24a axially coupled to the fourth link 24d attached to the pin joint 23b, a fifth side link attached to the fourth link 24d on the bottom side, and a pin joint 23c on the tip side of the second link 24b on the rod side. 24e, the second cylinder 26b axially connected to each, and the bottom side to the fifth link 24e,
A third cylinder 26c axially coupled to a sixth link 24f attached to the tip of the third link 24c via a pin joint 23d on the rod side, and a bottom side below the turning shaft 21a side of the horizontal turning mechanism 21. Protruding bracket 27
And a fourth cylinder 26 axially connected to a bracket 28 provided on the rod side at the tip side of the first link 24a.
The attachment 70 at the front end is configured to be position changeable in the front-back and up-down directions in the vertical plane by the link mechanism, and the horizontal rotation mechanism 21 is provided.
The position can be changed in the horizontal plane by rotating the rotating shaft 21a by a driving unit (not shown).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuji Miyata 3-12-6 Yamate-cho, Iwakuni-shi, Yamaguchi Prefecture

Claims (3)

[Claims] 1. A self-propelled low-floor loader that can be remotely operated to enter under a conveyor, and is attached to the low-floor loader via a horizontal rotation mechanism, and its tip portion can move forward and backward and up and down in a vertical plane. It has a support arm whose direction can be changed, a drill-shaped cutting blade, and a drive device that rotationally drives the cutting blade.
A disintegration device detachably attached to the tip portion of the support arm, and a suction port disposed near the cutting edge of the disruption device and detachably attached to the tip end portion of the support arm and having flexibility. A discharge pipe, a suction port of the discharge pipe and a blade arranged around the cutting edge of the shredding device to guide a cutting piece cut by the cutting blade to the suction port, and a discharge port of the discharge pipe And a suction device connected to the side, and a falling mine cleaning device. 2. The cutting blade is formed such that the cutting edge is formed in a straight mountain shape, and a curved surface for scooping a cutting piece is provided on a side surface on the front side in the rotation direction of each land portion continuous with the cutting edge. The falling mine cleaning device according to claim 1, wherein: 3. The falling mine cleaning device according to claim 1, wherein the discharge pipe has an ejection hole for ejecting a gas from a front end portion thereof toward a rear end portion thereof.