JPH10272981A - Material handling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a material handling vehicle that is able to load a plurality of conveyed materials on the deck. SOLUTION: This material handling vehicle is provided with two loading parts 11a and 11b in a deck 11 and also a material handling gear 13 being free of housing a container 12 into these loading parts 11a and 11b, and this material handling gear 13 is composed of a first boom 14 installed in a rear end of the deck 11 free of rocking motion, a first boom rocker device 17, a second boom 23 installed in a tip part of the first boom 14 free of rocking motion, a second rocker device 25, and a lifting sling installed in a tip of the second boom 23, respectively. In this constitution, the lifting sling is engaged with the container 12, rocking the first boom 14, and the container 12 is able to be loaded or unloaded to or from the rear loading part 11b. In addition, the first boom 14 and the second boom 23 are rocked up and down, whereby the container 12 is able to be loaded or unloaded to or from the front loading part 11a as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo handling vehicle used for loading and transporting bricks, slag, and the like that are produced when cleaning furnaces and pots in, for example, an ironworks.

[0002]

2. Description of the Related Art Conventionally, as this kind of cargo handling vehicle, FIG.
10 was used. That is, the cargo handling vehicle 39 includes the truck head 40 and the trailer 41
And the like, where the track head 40 is
And a driving unit 44.
The outrigger 4 is attached to the rear of the bed 46 having wheels 45.
7 is provided. At the rear of the track head 40, a trailer 41 is connected via a vertical shaft 42 or the like.
Are connected to each other so that they can be pulled.

A cargo handling device 48 provided on the loading platform 46
Has a pair of booms 49 in the left-right direction (vehicle width direction),
These booms 49 are respectively connected at the rear end of the loading platform 46 by left and right horizontal shafts 50 so as to swing back and forth about the horizontal shaft 50 over the upper portion of the loading platform 46 and the rear thereof. It is configured to be movable. And both booms 49
Are integrated by a connecting member 51 in the left-right direction.

[0004] A left-right pin 52 is provided on the inner surface slightly closer to the left-right shaft 50 than the ends of both booms 49.
Fixtures 53 are provided on both left and right sides of the left and right direction pins 52, respectively.
Are externally fitted, and a chain 55 is suspended via U bolts 54 provided on the fixing tools 53. A plurality of hooks 56 are provided at the end of each chain 55,
The hanging pin 57a of the container 57 is configured to be engageable.

[0005] A pair of left and right cylinder devices 58 for swinging the boom 49 are provided. The main body 58a of the cylinder device 58 is connected via a pin 60 to a bracket 59 provided at the front end of the loading platform 46, and the piston rod 58b extending rearward is connected via a pin 62 to a bracket 61 on the boom 49 side. Have been. Further, on the inner surface side of the both booms 49 near the left-right axis 50, a left-right hook pin 63 is provided, and the hook pin 63 is provided with a container hook 64 rotatably. An engagement portion 57b is provided at a lower rear portion of the container 57, and is configured to be freely engageable with the container hook 64.

According to such a conventional configuration, for example, bricks, slag, and the like that are obtained when cleaning a furnace and a pot in an ironworks are loaded into the container 57, and when the container 57 is lifted and transported, first, a virtual line shown in FIG. As shown in (2), the worker engages the hook 56 with a pair of front, rear, left and right suspension pins 57a provided on the container 57 in a state where the outrigger 47 is extended and grounded and the trailer 41 is stabilized. At this time, the booms 49 are swung rearward around the left-right axis 50 by the extension of the cylinder device 58. In this state, when another operator (operator) in the operation unit 44 contracts the cylinder device 58, the container 57 is lifted via the boom 49 which is first swung upward while being swung upward. And boom 49
The container 57 can be positioned on the loading platform 46 as shown by the solid line in FIG.

As shown in FIG. 10, when performing a dumping operation for discharging loaded bricks, slag, and the like from the rear of the container 57, an operator operates the container hook 64.
The boom 49 and the container 57 are integrated with each other by engaging with the engaging portion 57b. In this state, when the operator in the operating unit 44 operates the cylinder device 58 to extend, the container 57 swings integrally with the boom 49 that swings backward while swinging upward. That is, the container 57 can be erected at a position rearward of the trailer 41 by first lowering the rear portion of the container 57 while gradually lifting the front portion thereof. Thus, the loaded brick, slag, and the like can be discharged.

[0008]

However, according to the above-mentioned cargo handling vehicle, only one conveyed object can be placed. Therefore, in order to load and transport a large amount of bricks, slag, etc., the cargo handling vehicle must be equipped with a large amount of cargo. It is necessary to reciprocate again and again, and there is a problem that work efficiency is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cargo handling vehicle capable of loading a plurality of articles to be carried on a carrier and transporting the articles efficiently.

Another object of the present invention is to provide a cargo handling vehicle capable of performing work by a cargo handling device quickly and reliably.

[0011]

In order to achieve the above object, a cargo handling vehicle according to the present invention is provided with a cargo handling device on a loading platform, and a plurality of objects to be transported are placed in front of and behind the loading platform. The loading and unloading device is configured to be freely mounted on a mounting portion provided, and the loading and unloading device comprises a pair of left and right first
A boom, a first boom swinging device provided between the first boom and the loading platform side, a second boom swingably provided at a tip end of the first boom, and a second boom and a second boom. A second boom swing device provided between the first boom and the second boom;
It is characterized in that it is constituted by a hanger provided at the end of the boom and capable of being detachably engaged with the transferred object.

Therefore, according to the first aspect of the present invention, the hanging object is engaged with the object to be conveyed, and further, the first boom swinging device is driven to swing the first boom, so that the object to be conveyed is placed after the loading platform. On the side or on the loading platform. Further, in a state where the suspending member is engaged with the transported object, the first boom swing device is driven to swing the first boom, and the second boom swing device is driven to swing the second boom. By placing the transferred object on the mounting portion in front of the loading platform,
And can be unloaded.

According to a second aspect of the present invention, there is provided a cargo-handling vehicle.
In the configuration according to claim 1, the hanging member is a second member.
A plate body swingably provided at the inner end of the boom and having a locking portion, a plate body moving device provided on the second boom and moving the plate body in the left-right direction, and provided on the second boom; A pair of left and right plate body fixing devices capable of fixing the swing of the plate body at a fixed swing angle with respect to the second boom, wherein the plate body is detachable from a locking member provided on the transferred object. It is characterized by having been constituted in.

Therefore, according to the second aspect of the present invention, the plate body moving device is driven to move the plate body inward in the left-right direction, so that the locking portion of the plate body is engaged with the locking member of the transferred object. By driving the plate moving device to move the plate outward in the left-right direction, the locking portion of the plate can be disengaged from the locking member of the transported object. When performing the discharging operation from the transported object, the first boom swinging device is driven by driving the first boom swing device from a state where the locking portion is engaged with the locking tool and the transported object is placed on the mounting portion. The second boom swing device is driven at a position where the first boom is almost upright by swinging the boom.
Swing the boom. Next, when the plate is at a certain swing angle with respect to the second boom, the plate body fixing device is driven, and when the drive of the second boom swing device is stopped, the plate body is prevented from swinging. . From this state, the first boom swing device is further driven to swing the first boom backward. At this time, the first boom, the second boom, and the plate are integrated with each other, and the plate and the transferred object are integrated with each other. In conjunction with the swinging movement, the transported object can be erected at the rear position of the vehicle by gradually lowering the rear portion while lifting the front portion thereof, thereby discharging the object.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
Referring to FIGS. 1 to 7, a description will be given of a state in which bricks, slag, and the like that are produced when a furnace and a pot are cleaned in an ironworks are used in a cargo handling vehicle used to load and transport containers.

That is, as shown in FIGS. 1 and 2, the cargo handling vehicle 1 includes a track head 2 and a trailer 4 connected to a rear portion of the track head 2 via a vertical shaft 3. The track head 2 is provided with a front vehicle body 6 having wheels 5, an operation unit 7 provided on the front vehicle body 6, and a driving unit for driving each cylinder device (described later) in the operation unit 7. It comprises an operating lever 8 and the like. The trailer 4 is provided with a loading platform 11 on the upper surface side of a rear vehicle body 10 having wheels 9. A front loading section 11 a and a rear loading section 11 b are provided before and after the loading platform 11, respectively. An example of the transported object 12 is configured to be freely mounted.

The rear body 10 is provided with a loading / unloading device 13 capable of loading / unloading the container 12 on the loading platform 11 and discharging the loaded bricks, slag, and the like by operating the operation lever 8. I have. That is, the loading / unloading device 13 has a pair of first booms 14 in the left-right direction (vehicle width direction). By being connected separately to each other, it is configured to be swingable back and forth around the left-right axis 15 over the upper portion of the loading platform 11 and the rear thereof.
The free ends of the first booms 14 are integrated by a left-right connecting member 16.

Further, the first axis is centered on the horizontal axis 15.
A lower cylinder device (an example of a first boom swing device) 17 for swinging the boom 14 is provided in a pair of right and left. The main body 17a of these lower cylinder devices 17
A piston rod 17b connected to brackets 18 provided on the left and right sides of the rear mounting portion 11b of the loading platform 11 via pins 19, and extends rearward via a pin 21 to a bracket 20 on the first boom 14 side. Connected. The lower cylinder device 17 is configured to be drivable by the operation lever 8 of the operation unit 7.

Further, a left-right swing shaft 22 is provided slightly to the left-right shaft 15 side from the tip of the first boom 14.
A pair of second booms 23 are provided inside the first booms 14 with the swing shaft 22 as a base end. A rotatable pin 24 is provided at an intermediate portion of the second boom 23, and an upper cylinder device (a second cylinder device) provided at an upper end portion of the first boom 14 and substantially at an intermediate portion between front and rear.
One example of a boom swinging device) The rod portion 25a of 25 is connected to the pin 24, and the second boom 23 drives the swinging shaft 22 by driving the upper cylinder device 25 based on the operation of the operating lever 8 of the operating unit 7. It is configured to be swingable at the center.

As shown in FIGS. 1 to 3, a first through hole 26 is provided at the tip of each of the second booms 23 in the left-right direction, and further on the side of the swing shaft 22 than the first through hole 26. ,
A second through hole 27 is provided in the left-right direction. Inside the two second booms 23, L-shaped suspension plates (an example of a plate) 2 at positions parallel to and close to the two second booms 23, respectively.
8 protrudes outwardly in the left-right direction at substantially the center of the movable pin 29, and moves the movable pin 29 to the first through hole 2.
6 and is provided so as to be rotatable around a moving pin 29.

A first link portion 30 having a bell-crank mechanism is provided between a pair of the left and right second booms 23 and adjacent to the first through hole 26. One end 30a of the first link portion 30 is connected to a moving pin 29 projecting from the first through hole 26 of the second boom 23,
Further, the other end portion 30b of the first link portion 30 and the rod portion 31a of the hook cylinder (an example of a plate moving device) 31
And are connected. The hook cylinder 31 is provided so as to be driven by the operation lever 8 of the operation unit 7.

A second link 32 having a bell-crank mechanism is provided between a pair of the left and right second booms 23 and adjacent to the second through hole 27. One end 32a of the second link portion 32 is connected to a fixing pin 33 projecting from the second through hole 27 of the second boom 23,
The fixing pin 33 is provided in the hole 28 provided in the suspension plate 28.
a, the second boom 23 and the suspension plate 28 are configured to be able to communicate with each other at a position in a horizontal posture. Further, the other end portion 32b of the second link portion 32 is connected to a rod portion 34a of a lock cylinder (an example of a plate fixing device) 34. The lock cylinder 34 is provided so as to be drivable by the operation lever 8 of the operation unit 7.

The one end 28b and the other end 28c of the suspension plate 28 are each provided with a hole (an example of a locking portion).
35 are provided. A plurality of hanging pins (an example of a locking tool) 12 a
Is provided so as to protrude to the side, and is configured to be freely engageable with the hole 35.

The operation of the above embodiment will be described below. As shown in FIG. 4, for example, when bricks, slag, and the like are loaded into the container 12 and the container 12 is placed on the rear placement portion 11b of the loading platform 11, the piston rod 17b of the lower cylinder device 17 is projected, and The rod portion 25a of the upper cylinder device 25 is contracted so that the first boom 14 and the second boom 23 substantially overlap each other. Part 3
Move 1a forward. Then, the moving pin 29 and the suspension plate 28 move inward in the left-right direction from the imaginary line in FIG. 3 to the solid line via the first link portion 30, and are thereby suspended on the suspension pins 12 a of the container 12. Hole 35 of plate 28
Are externally fitted and engaged. Next, lower cylinder device 1
When the first boom 14 is swung by retracting the container 7, the container 12 is lifted while maintaining the horizontal state (shown at the position A in FIG. 4), and further, the lower cylinder device 17 is retracted to move the container 12. Of the loading platform 11
b (shown in a position B in FIG. 4). In the operation of unloading the container 12 from the carrier 11, the reverse operation is performed.

Next, as shown in FIG.
When placing 2 on the front placing portion 11a of the loading platform 11, first,
As described above, by operating the operation lever 8, the hook cylinder 31 is driven to move the rod portion 31a forward.
Then, the moving pin 29 and the suspension plate 28 move inward in the left-right direction from the imaginary line in FIG. 3 to the solid line via the first link portion 30, whereby the suspension pin 12 a of the container 12 is moved. The hole 35 of the suspension plate 28 is externally fitted and engaged.

Next, the lower cylinder device 17 is contracted to swing the first boom 14, and the upper cylinder device 25 is moved forward to swing the second boom 23 relative to the first boom 14. , The container 12 is lifted while keeping the horizontal state (shown in the position A in FIG. 5),
The container 12 placed on the rear placing portion 11b of the bed 11
Circumvents the upper part of the lower cylinder device 17
And the upper cylinder device 25 is moved forward to move the container 12 to the front mounting portion 11a of the loading platform 11.
(Shown in the position B in FIG. 5). In the operation of unloading the container 12 from the carrier 11, the reverse operation is performed.

Further, when discharging the bricks, slag, etc. from the container 12, the holes 35 of the suspension plate 28 are engaged with the suspension pins 12a of the container 12, as shown in FIGS. And the container 12 is placed on the front
(Or the rear mounting portion 11b), the lower cylinder device 17 is moved forward to swing the first boom 14, and the upper cylinder device 25 is moved to a position where the first boom 14 is almost upright. To make the second boom 23 swing. Next, a position where the suspension plate 28 and the second boom 23 are in a horizontal position with respect to each other (shown by a position A in FIG. 7).
When the lock cylinder 34 is driven to move the rod portion 34a forward and the driving of the upper cylinder device 25 is stopped, the operation direction is changed to the axial direction of the fixed pin 33 via the second link portion 32. Be converted to As a result, the fixing pin 33 moves inward in the left-right direction, and as shown by the solid line in FIG.
And is engaged with the outside.

From this state, the lower cylinder device 1
When the first boom 14 is moved forward, the first boom 14 swings rearward. At this time, the first boom 14, the second boom 23, and the suspension plate 28 are integrated, and the suspension plate 28 and the container 12 are integrated. Therefore, the first boom 1
4, together with the second boom 23 and the suspension plate 28 swinging backward, the container 12 gradually lowers the rear part while lifting the front part thereof, so that the container 12 is positioned at the position a in FIG.
The container 12 can be erected at the rear position of the trailer 4 as shown in the position (b). Thus, the loaded brick, slag, and the like can be discharged. When the container 12 is returned to the state where it is placed on the loading platform 11, an operation reverse to that described above is performed.

By providing a height difference so that the rear mounting portion 11b is formed lower than the front mounting portion 11a of the loading platform 11, the rear view from the operating portion 7 becomes good, and each Work can be performed more suitably.

In the above embodiment, the suspension plate 28
Although a hanging tool including the hook cylinder 31 and the lock cylinder 34 is employed, this may be a chain or a wire rope.

In the above-described embodiment, the cylinder device is shown as the first boom swing device and the second boom swing device, but other types such as a ball screw type may be adopted.

In the above-described embodiment, the cargo handling vehicle 1 in which the front vehicle body 6 of the track head 2 and the rear vehicle body 10 of the trailer 4 are connected via the vertical shaft 3 is shown.
Other connecting means may be used, and the vehicle body may be an integrated cargo handling vehicle.

[0033]

According to the first aspect of the present invention, by moving the first boom by driving the first boom swinging device, it is possible to load and unload the transported object to the loading portion at the rear side of the loading platform. ,
Further, by swinging the second boom by driving the second boom swinging device, the transported object can be loaded and unloaded to the mounting portion in front of the loading platform. Transport can be performed at the same time, and the traveling distance and work time can be substantially reduced, so that work efficiency can be improved, and further, an economic effect such as saving fuel for cargo handling vehicles can be expected.

According to the second aspect of the present invention,
It can be loaded and unloaded to the loading sections before and after the loading platform, and can be quickly and reliably performed by only the operators of the operating section, including the discharging operation.

[Brief description of the drawings]

FIG. 1 is a side view illustrating an example of an embodiment of the present invention when a cargo handling vehicle is being transported.

FIG. 2 is a plan view of the cargo handling vehicle during transportation.

FIG. 3 is a partially cutaway plan view showing a plate moving device and a plate fixing device of the cargo handling vehicle.

FIG. 4 is a schematic side view of a main part showing unloading to a rear mounting portion in the cargo handling vehicle.

FIG. 5 is a schematic side view of a main part of the loading and unloading vehicle, showing unloading to a front mounting portion.

FIG. 6 is a side view of the cargo handling vehicle when dumping from a rear mounting portion.

FIG. 7 is a side view of the cargo handling vehicle when dumping from a front mounting portion.

FIG. 8 is a side view showing a conventional example when loading and unloading vehicles are unloaded.

FIG. 9 is a plan view at the time of unloading of the cargo handling vehicle.

FIG. 10 is a side view of the cargo handling vehicle at the time of dumping.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cargo handling vehicle 11 Carrier 11a Front placement part 11b Rear placement part 12 Container (an example of a thing to be conveyed) 12a Hanging pin (an example of a locking device) 13 Loading equipment 14 1st boom 17 Lower cylinder device (1st boom) Example of swinging device) 23 Second boom 25 Upper cylinder device (Example of second boom swinging device) 28 Suspension plate (Example of plate) 31 Hook cylinder (Example of plate moving device) 34 Lock cylinder (Plate) An example of a fixing device) 35 holes (an example of a locking portion)

Claims (2)

[Claims] 1. A cargo handling device is provided on a loading platform, and a plurality of transported objects are configured to be able to be mounted on loading portions provided before and after the loading platform, and the loading device is swingable at a rear end portion of the loading platform. A pair of left and right first booms, a first boom swing device provided between the first boom and the loading platform side, and a second boom swingably provided at a tip end of the first boom. Boom and this second
A second boom swinging device is provided between the boom and the first boom, and a hanger is provided at a tip of the second boom and is detachable from a conveyed object. Cargo handling vehicle. 2. A plate body provided with a suspending member at a tip end inside the second boom so as to swing freely and a plate body provided on the second boom and moving the plate body in the left-right direction. A moving device and a pair of left and right plate fixing devices provided on the second boom and capable of fixing the swing of the plate at a fixed swing angle with respect to the second boom; The cargo handling vehicle according to claim 1, wherein the vehicle is configured to be freely disengageable from a locking member provided on the vehicle.