JP2001080747A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working vehicle allowing a loading device to get access to a transported object at four side corner parts mechanically and rapidly in serviceable range. SOLUTION: This working vehicle is formed so that transport means 11 positioned in longitudinal direction, loading means 21 loading a transported object A at the start end portion of the transport means 11, and spray means 41 spraying the transported object A from the end portion of the transport means 11 are installed on running means 5 on a swingable body 10 side. The loading means 21 is operated to transport the transported object A loaded at the start end portion of the transport means 11 rearward by the transport means 11 in order to move the object from the end portion to the spray means 41 for spraying toward the inside. Thus, the transported object A can be sprayed mechanically, uniformly, and widely in the serviceable range, and the loading operation can be performed rapidly with extremely less labor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle used for loading ore and the like from a ship, for example.

[0002]

2. Description of the Related Art Conventionally, in order to load ore from a ship, a large loading device 51 is prepared on a quay 50 as shown in FIG. The unloading device 51 includes a main body 5
2, a discharge conveyor 53 provided on the main body 52, a relay conveyor 54, an upper conveyor 55 connected to the end of the relay conveyor 54, and a scraping means 56 provided at a lower end of the upper conveyor 55. Etc. Each of the conveyors 53 to 55 is of a belt type, and the upper conveyor 55 is of a sandwiching type.

According to such a conventional unloading device 51, the scraping means 56 is positioned in the hold 58 of the carrier ship 57 berthed on the quay 50, and the ore 59 scraped by the scraping means 56 is transferred upward. 55, and then transported from the relay conveyor 54 to the discharge conveyor 53 and loaded on a truck (not shown).

[0004]

However, according to the above-mentioned conventional structure, the ore 59 always remains at the four corners 58a of the hold 58 due to the hatch shape and the operation amount of the scraping means 56. For that reason, the worker
8, the ore 59 at the four corners 58a is manually moved to a range where the scraping means 56 can operate, so that the unloading operation requires a large amount of labor and cannot be performed quickly. .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a work vehicle capable of mechanically and quickly bringing an article to be conveyed, such as four corners, into an area where the loading device can operate. It is what it was.

[0006]

According to a first aspect of the present invention, there is provided a work vehicle, comprising:
A loading means for loading an object to be transported at a start end portion of the transporting means and a spraying means for spraying an object to be transported from an end portion of the transporting means are provided.

Therefore, according to the first aspect of the present invention, when the object to be transported at the four corners is brought into a range where the loading device can operate, the work vehicle is first loaded by a crane or the like. The ordinary traveling of the work vehicle can be performed with the traveling means in the vehicle length direction. Then, when moving to the expected work, the vehicle body is turned with respect to the traveling means as necessary, and the traveling means is oriented at right angles to the vehicle length direction, and the traveling means traverses the intended work. Stop in position.

Next, the transporting means is operated in a predetermined posture, and while the spraying means is operating, the loading means is operated to load the article to be transported at the start end of the transporting means.
The loading means repeats the same loading operation. At this time, the loading means can change the take-up position with respect to the four corners by turning the vehicle body. The objects loaded at the start end of the conveying means can be conveyed backward by the conveying means, and can be moved from the end part to the spreading means and sprayed inward by the spreading means. As a result, the conveyed objects at the four corners can be spread mechanically and flatly over a wide range within a range in which the loading device can operate. When such a work is performed while the work vehicle travels in a transverse direction along the four side walls, the conveyed objects in the entire area of the four corners can be spread evenly in a range where the loading device can operate.

The work vehicle according to the second aspect of the present invention,
In the above-described configuration of the first aspect, the spraying means is characterized in that the spraying direction can be changed up and down. Therefore, according to the invention of claim 2,
By changing the spraying direction up and down during spraying by the spraying means, it is possible to spread the transported object over a wider range.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described with reference to FIGS. The work vehicle 1 includes a traveling unit 5 and a vehicle body 10 that can turn with respect to the traveling unit 5. The traveling means 5 is configured such that a traveling drive device 7 of an endless track type is provided on both sides of the traveling section body 6. Above the traveling section main body 6, a driving type turning means 8 is provided.
The vehicle body 10 is provided via the. And body 1
Above 0, an operation unit 3 is provided via a gantry 2, and the operation unit 3 is equipped with a driver's seat 4, an operation lever group, and the like.

The vehicle body 10 is provided with a transport means in the vehicle length direction. That is, a belt conveyor device (an example of a conveying means) 11 located at a central portion of the vehicle body 10 in the vehicle width direction and extending in the vehicle length direction has a starting end portion at the vehicle body 1.
It is disposed in front of 0 and inclined as a lower order. The belt conveyor device 11 includes a conveyor frame 12 supported on the vehicle body 10 via a support shaft 17 so as to be vertically swingable.
And rollers 13 and 14 provided at the front and rear ends of the conveyor frame 12, a belt 15 wound between the rollers 13 and 14, and a rotation driving device ( (Not shown).

At this time, the belt 15 is configured so as to have a dish-shaped cross section in its transport path by the support guide of an inclined plate or a roller provided on the conveyor frame 12 side. A cylinder device 16 is provided between the vehicle body 10 and the conveyor frame 12 for vertically swinging the conveyor frame 12 around a support shaft 17 in order to raise the front end side of the conveyor frame 12 during normal traveling. Have been. An example of the belt conveyor device 11 is configured by the above 12 to 17.

At the front of the belt conveyor device 11,
A receiving plate (apron) 18 is provided so as to be fixed to the conveyor frame 12. The receiving plate 18 is formed by a central plate portion 18a along the length direction (inclination direction) of the conveyor frame 12, and side plate portions 18b continuously provided outward from both sides of the central plate portion 18a. ing. The central portion of the central plate portion 18a is opened 19,
Thus, the start end of the belt conveyor device 11 is exposed.

On the vehicle body 10 side, loading means 21 for loading ore (an example of an object to be transported) A at the starting end of the belt conveyor device 11 is provided. The loading means 21 includes a bucket device 22, a scraping device 35, and the like. That is, the bucket device 22 has a support 23 integrated with the front portion of the driving section 3, and the support 23 has a vertical axis 2 positioned at the center of the vehicle width.
A swivel 25 is provided so as to be able to swivel via 4, and a swivel drive (not shown) is provided. The swivel base 25 is connected to a base boom 26 via a horizontal pin so as to be vertically swingable, and is provided with a cylinder device 27 for performing the swing.

At the free end of the base boom 26,
The front boom 28 is relatively rotatably connected via a lateral pin, and a cylinder device 29 for performing the rotation is provided. Further, a bucket 30 is connected to the free end portion of the front boom 28 via a horizontal pin so as to be relatively rotatable, and a cylinder device 31 for rotating the bucket 30 is provided. An example of the bucket device 22 is configured by the above 23 to 31.

The scraping devices 35 are arranged symmetrically on the left and right with respect to the center of the vehicle width.
has a vertical axis 36 perpendicular to b, and the vertical axis 36 is provided on the side of the conveyor frame 12 and at a position close to the driving unit 3. A flat scraper 37 is provided on the vertical shaft 36 so as to be rotatable in the left-right direction via a rear end portion thereof, and a cylinder device 38 for performing the rotation is provided. 36-
An example of the scraping device 35 is configured by 38.

On the vehicle body 10 side, there is provided a spraying means 41 for spraying an article to be conveyed from an end portion of the conveying means so that the direction of spraying can be changed up and down. That is, the dispersing means 41 is provided below the end of the belt conveyor device 11, and its receiving main body 42 is provided at the rear end of the vehicle body 10 via the horizontal shaft 43 so as to be able to swing up and down. Is provided between the vehicle body 10 and the receiving main body 42.

The receiving main body 42 comprises a bottom plate 42a and a semicircular side plate 42b, and is provided in a state where the upper part and the rear part are open. In the receiving body 42, a wing body 46 for spraying is provided via a drive shaft 45 in a vertical direction.
And, on the lower surface side of the bottom plate portion 42a, a rotary drive device 47 interlocked with the drive shaft 45 is provided. Above 42-4
7 constitutes an example of the spraying means 41 in which the spray opening 42c is formed by the rear open portion of the side plate portion 42b.

The operation of the above embodiment will be described below. For example, ore A at the four corners in hold B
When the rake means C of the loading device approaches the operable range, the work vehicle 1 is first loaded into the hold B by a crane or the like. For normal traveling of the work vehicle 1 in the hold B, for example, the bucket device 22 is positioned above as shown by the solid line in FIG. 1, and the traveling means 5 is moved as shown by the imaginary lines in FIG. 1 and FIG. It is performed in the state of being in the long direction.

At the time of moving to the intended work, the vehicle body 10 is turned with respect to the traveling means 5 as shown by, for example, a solid line in FIGS. At the same time, the vehicle is traversed by the traveling means 5 and stopped at a target working position as shown in FIG. Next, with the belt conveyor device 11 swung at a predetermined inclination angle by the operation of the cylinder device 16, the belt conveyor device 11 and the spraying device 41 are operated, and further, the bucket device 22 of the loading device 21 is operated.

That is, as shown by the solid line in FIG. 1 and FIG. 2, the base boom 26 is slightly upward, the front boom 28 is linear with respect to the base boom 26, and the front boom 28 is straight. With the bucket 30 turned upward with respect to the boom 28, the bucket 30 is first turned downward by the extension movement of the cylinder device 31, and as shown by the imaginary line A in FIG. Insert A from above.

Then, the cylinder device 29 is contracted and moved, and the base boom 28 is swung downward and toward the vehicle body 10, whereby the ore A is scooped by the bucket 30 as shown by the imaginary line B in FIG. , This bucket 30
It is located above the receiving plate 18 and above the starting end of the belt conveyor device 11. Next, the ore A in the bucket 30 is placed on the receiving plate 18 or the starting end portion by contracting and moving the cylinder device 31 to rotate the bucket 30 downward and outward with respect to the front boom 28. Let it fall.

The bucket device 22 repeats the same loading operation. At that time, the bucket device 22
By turning the swivel 25, the scooping position can be changed. That is, as shown by the solid line in FIG. 2, for example, the work position indicated by the phantom line X in FIG. 2 can be changed to an arbitrary position such as a work position indicated by a virtual line Y in FIG.

As described above, the ore A dropped from the inside of the bucket 30 can be conveyed backward by the belt 15 driven by the belt conveyor device 11, and dropped from the end portion to the spraying means 41. Further, the ore A dropped from the inside of the bucket 30 and staying on the receiving plate 18 is scraped toward the starting end portion by the synchronous operation of the both scraping devices 35.

That is, the scraping body 37 is
When the ore A is dropped from the inside, it is located outside as shown by the solid line in FIG. And the bucket device 22
The cylinder device 38 is extended and moved automatically in synchronization with the timing at which the bucket 30 of the first embodiment is separated from above the receiving plate 18. As a result, the scrapers 37 are pivoted inward around the vertical axis 36 as shown by the imaginary line in FIG. 2, and can scrape the ore A on the receiving plate 18 into the start end portion. Thereafter, the scraping body 37 is returned to the outside as shown by the solid line in FIG.

As described above, the belt conveyor device 11
The ore A dropped from the end portion of the to the spraying means 41 is received by the main body 42, and the ore A is
The wings 46 can be splashed by the spraying wings 46 which are rotationally driven by the nozzle 7 and sprayed inward through the spraying openings 42c and the like. As a result, the ore A at the four corners can be spread mechanically and flatly over a wide range within a range where the scraping means C can operate. Therefore, the loading operation of the ore A can be performed quickly with very little labor.

At this time, by vertically swinging the receiving body 42 by the operation of the cylinder device 44, the spraying direction through the spraying opening 42c can be changed up and down. As a result, the ore A can be spread more widely. In addition, as shown in FIG. 3, the work as described above can be performed while the work vehicle 1 is traversing along the four side walls, so that the ore A in the entire four corners can be worked by the scraping means C. Can be spread evenly over a wide area.

In the above description, when moving to the expected work, the vehicle body 10 is turned with respect to the traveling means 5 to direct the traveling means 5 at right angles to the vehicle length direction. In some cases, the intended work is performed with the traveling means 5 in the vehicle length direction. In the above-described embodiment, ore A is shown as the transported object,
The objects to be conveyed include various objects such as a group of fixed-shaped objects and a group of irregularly-shaped objects in addition to “slipping” such as earth and sand, rubble, rocks, and gravel.

In the above-described embodiment, the belt conveyor device 11 is shown as the conveying means. However, depending on the type of the object to be conveyed, a roller conveyor device, a slatt conveyor device, a chain conveyor device, a tact conveyor device, or the like may be used. It can be appropriately adopted. In the above-described embodiment, the loading device 21 including the bucket device 22 and the scraping device 35 is shown. However, depending on the type of the object to be transported, the loading device of the clamp type, the loading device of the fork type, or the like may be appropriately used. It can be adopted. Also, the loading means 21 may be of a type using only one of the bucket device 22 and the scraping device 35.

[0030]

According to the first aspect of the present invention, the transported object loaded at the starting end of the transporting means by operating the loading means can be transported backward by the transporting means and sprayed from the terminal end. Means and can be sprayed inward by this spraying means. As a result, the objects to be transported at the four corners can be spread mechanically and flatly in a wide range in which the loading device can operate. Further, by causing the work vehicle to traverse along the four side walls, the conveyed objects in the entire four corners can be spread evenly in a range where the loading device can operate. Therefore, the work of loading the conveyed object can be performed quickly with very little labor.

According to the second aspect of the present invention,
By changing the spraying direction up and down during spraying by the spraying means, it is possible to spread the transported object over a wider range.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention and is a partially cutaway side view of a work vehicle.

FIG. 2 is a plan view of the work vehicle.

FIG. 3 is a schematic plan view showing a working state of the work vehicle.

FIG. 4 shows a conventional example, and is an explanatory view of a loading operation by a loading device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 work vehicle 5 traveling means 7 traveling drive device 8 driven turning means 10 body 11 belt conveyor device (transportation device) 12 conveyor frame 15 belt 18 receiving plate (apron) 21 loading device 22 bucket device 30 bucket 35 scraping device 37 scraping Enclosure 41 Spraying means 42 Receiving main body 42c Spraying opening 43 Lateral axis 44 Cylinder device 46 Spraying wing 47 Rotation drive A A ore (object to be transported) B Hold C

Claims (2)

[Claims] 1. A vehicle body capable of turning with respect to a traveling means,
It is characterized by being provided with a transport means in the vehicle length direction, a loading means for loading an article to be transported at a start end portion of the transport means, and a spraying means for spraying an article to be transported from an end portion of the transport means. And working vehicle. 2. The work vehicle according to claim 1, wherein the spraying means is configured so that the spraying direction can be changed up and down.