JP2808086B2 - Shell-type grab bucket and auxiliary device for bottom dring attached to it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket used for cargo handling of loose items, and more particularly to a bucket for collecting wood chips, powders, granules and the like accumulated in a storage room such as a hold or a warehouse. A shell-type grab bucket and a shell-type that scoop up objects while grasping them with claws, and efficiently scoop up and transfer woody chips, powders, granules, and other particles without spilling from the gaps between claws. The present invention relates to a bottom dredge assisting device to be mounted on a bottom dredge when the bottom dredge is performed by a grab bucket.

[0002]

2. Description of the Related Art Conventionally, when transferring piled bulk materials such as wood chips to another place, there are many orange peel buckets as shown in FIG. It is used. The orange peel bucket has a regular hexagonal shape when viewed from a plane as shown in FIG. 11, and has a structure in which the leaf opens and closes in the direction of each apex of the hexagon from the center. When grasping loose objects, they are grasped in a circular shape when viewed from a plane, scooped up, and transported.

[0003]

However, the above-described conventional orange peel bucket has the following problems. (1) The orange peel bucket has good bite into the chips accumulated by the special claw at the tip, but does not have very good scraping efficiency. (2) In the orange peel bucket, there is a case where an unbalanced load of each pin portion causes excessive force to a bearing portion or the like. (3) In the case of a rectangular shape such as a hold, as seen from a plane, the orange peel buckets are gripped in a circular shape when viewed from the plane and scooped up, so grab the wood chips accumulated on the side wall part. Scooping is difficult with an orange peel bucket. (4) In the case of non-uniform gripping, a part of wood chips gripped from the claw tip may spill out. (5) In an orange peel bucket, claws may damage the bottom of the ship, and it is difficult to squeeze the bottom. (6) The landing area at the beginning of grasping is large, but the escape at the time of scraping is large, so the scraping efficiency is not very good. (7) In the conventional orange peel bucket, since the supporting rope for suspending the orange peel bucket is supported to be deviated in the twisting direction with respect to the center of the bucket, there is a disadvantage that the bucket rotates and it becomes difficult to control the bucket.

The present invention has been made in view of the above problems, and has been made in order to solve the problems. It is an object of the present invention to stably hold a shell-type grab bucket and make the bucket grab. Prevents swirling, facilitates control of the bucket, and allows the loose objects accumulated on the side wall that has a square shape when viewed from a plane to be picked up without leakage and further scraped. It is an object of the present invention to provide a shell-type grab bucket that can reduce escape at the time.

Another object of the present invention is to mount the shell-type grab bucket on the tip end of the shell when the bottom is dredged so that the claws at the tip of the shell do not damage the floor surface. An object of the present invention is to provide a bottom dredge assisting device that can efficiently perform bottom dredge without leaking loose objects at the time of the above.

[0006]

In order to achieve the above object, a shell-type grab bucket according to the first aspect of the present invention is provided with an upper block that is long in one direction above a shell-type grab bucket, and is provided on an upper surface of the upper block. On the center line, connect the lower ends of the supporting ropes that suspend the shell-type grab bucket apart from each other on both sides in the longitudinal direction,
A pair of left and right arms are pivotally connected to the left and right ends of the upper block downward at predetermined intervals in the longitudinal direction so as to be rotatable, and a lower block that is long in one direction below the upper block is defined by the longitudinal direction of the upper block. In the same direction as the upper and lower shells, a pair of left and right rectangular shells in a plan view that are long in one direction below the lower block are arranged in the same direction as the upper block and the lower block. The upper and lower pairs of left and right shells are rotatably connected to the left and right sides of the lower block, and both sides of the left and right shells are rotatably connected to the lower ends of the left and right arms. The shell is formed so as to be openable and closable downward, and the claws are shifted to the ends of the left and right shells so as to engage with each other alternately. Respectively the upper sieve and Roashibu on both sides longitudinal center of the over blocks,
A booster mechanism is constructed by wrapping an open / close rope that reciprocates between each upper sheave and lower sheave many times on both sides, and one end of each open / close rope wrapped on both sides is connected to the longitudinal direction of the upper block upper surface. The opening and closing ropes on both sides are connected to each other via a balancer which is swingably provided at the center and are interlockingly connected via the balancer.

Further, according to a second aspect of the present invention, there is provided an auxiliary tool which is mounted on the tip side of the left and right shells of the shell-type grab bucket in the case of loosening the bottom. It has a flat plate-like shape, and has a flat plate-like lower end surface that is in contact with the floor surface when the bottom is dredged, and is formed in a straight line, and the flat plate-like inner surface side that contacts the inner surface side of the shell. At the lower end of the hook, an engaging recess for inserting the tip of the hook is formed, and at a position corresponding to the hook mounting position, a connecting plate is attached vertically on the inner surface on both sides thereof with a slight space therebetween. A connection hole is formed on the side, and a notch is formed in a flat plate shape between both connection plates from the upper portion to the middle portion.

[0008]

The present invention having the above-described structure operates as follows. That is, according to the shell-type grab bucket according to the first aspect of the present invention, the shell-type grab bucket is stably hung to prevent the bucket from turning, and the pair of left and right shells Since it has a rectangular shape in a plan view that is long in one direction, it acts to pick up and scoop up loose objects accumulated on side wall portions that are square when viewed from the top like a hold, without leakage. Further, since the left and right shells are rectangular in one direction, they act so as to reduce the escape at the time of scraping.

According to the second aspect of the present invention, when the bottom is dredged, the bottom-draining auxiliary tool is attached to the tip end of the shell of the shell-type grab bucket of the first aspect. By doing so, it works to avoid damaging the floor surface with the claws at the tip of the shell. Act on.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments shown in the drawings. Here, FIG. 1 is a front view of the shell-type grab bucket, FIG. 2 is a side view partially omitted of the shell-type grab bucket, FIG. 3 is a bottom view partially omitted of the shell-type grab bucket, and FIG. Structural diagram of the state,
FIG. 5 is a plan view of the bottom dredge assisting tool, FIG. 6 is a front view of the bottom dredge assisting tool, FIG. 7 (A) is an AA arrow view of FIG.
(B) is a view taken in the direction of the arrows BB in FIG. 6, FIG. 8 is a view taken in the direction of the arrows CC in FIG. 7, and FIG. 9 is a front view of the shell-type grab bucket equipped with a bottom dredge assisting tool.

In the figure, a shell-type grab bucket 1 is used for, for example, loading and unloading wood chips accumulated in a hold in a cargo handling operation. Looking at it, it has a long rectangular shape. Shell type grab bucket 1
Are suspended at the lower ends of a pair of supporting ropes 2 whose both ends in the longitudinal direction hang down from the tip of a crane (not shown).

The shell type grab bucket 1 is provided with an upper block 3 on its upper part. The upper block 3 has a shape in which the trapezoid is inverted upside down, and the shape extends as it is in the longitudinal direction, and the side surface in the longitudinal direction looks like a long rectangular shape.
The lower ends of the support cords 2 are connected to both ends of the upper surface of the upper block 3 in the longitudinal direction on the center line. For this reason, the shell-type grab bucket 1 is hung in a well-balanced manner by the two supporting ropes 2, and does not start to rotate while scooping loose items.

An upper sheave 3a, 3a on which an opening / closing rope 4 described later is wound around the upper block 3 many times.
Are provided rotatably. Upper sheave 3a, 3
“a” is provided on both sides of the center of the longitudinal side surface of the upper block 3. A balancer 3b is swingably provided on the upper surface at the center of the side surface in the longitudinal direction of the upper block 3. Upper sheaves 3 on both sides are provided at both ends of the upper part of the swingable balancer.
a, 3a, which will be described later, respectively.
Are connected to each other. The balancer 3b balances the opening and closing ropes 4, 4 on both sides connected to both ends of the balancer 3b, and prevents a lower block 6, which will be moved up and down through the opening and closing ropes 4, 4, from being tilted in the longitudinal direction to balance the balance. It is.

On both sides of the upper surface of the upper block 3 in the longitudinal direction with the balancer 3b interposed therebetween, there are provided rope guides 3c, 3c for vertically guiding the respective opening / closing ropes 4, 4 extending vertically. Furthermore, a lower sheave 6 described later is provided outside the rope guides 3c.
Roller guides 3d, 3d are provided, respectively, for horizontally rotating one end of the upward opening / closing ropes 4, 4 wound around a toward the balancer 3b on the upper surface of the upper block 3. A handrail 3e for safety is attached to the periphery of the upper surface of the upper block 3.

A pair of left and right arms 5 and 5 are attached to the left and right ends of the upper block 3 obliquely downward so as to open to the left and right outer sides. The upper ends of the left and right arms 5, 5 are rotatably connected to the left and right ends of the upper block 3 by upper arm pins 5a, 5a. The arms 5, 5 are connected in an obliquely downward state so as to open to both sides. Further, a plurality of the pair of arms 5, 5 are attached at regular intervals in the longitudinal direction of the upper block 3.

A space surrounded between the upper block 3 and the left and right arms 5 and 5 is rotatably connected to the lower block 6 and the lower side thereof via main shafts 7 and 7. Shells 8 are provided in parallel with each other.

The lower block 6 has a substantially rectangular shape on the front surface, and the shape extends as it is in the longitudinal direction. 6 has a longitudinal direction parallel to the upper block 3 above. Both ends in the longitudinal direction of the lower block 6 are substantially directly below both ends in the longitudinal direction of the upper block 3 thereabove, and the length of the lower block 6 in the longitudinal direction is substantially the same as that of the upper block 3. I have.

The lower block 6 is provided with rotatable lower sheaves 6a, 6a around which the opening / closing rope 4 is wound many times. The lower sheaves 6a, 6a are respectively provided directly below the upper sheave 3a on both sides of the center of the side surface in the longitudinal direction of the lower block 6. Between the lower sheaves 6a, 6a of the lower block 6 and the upper sheaves 3a, 3a of the upper block 3 located above, the opening and closing ropes 4, 4 for operating the opening and closing of the shell 8 are provided several times. Is also wound back and forth to form a wiring.

As described above, the open / close ropes 4, 4 are reciprocated and wound between the upper sheaves 3a, 3a of the upper block 3 and the lower sheaves 6a, 6a of the lower block 6 many times, so that the upper block 3 is wound. And the lower block 6 can be a booster mechanism.
4 can be opened and closed by operating the left and right shells 8, 8 described later.

The opening / closing rope 4 is used to open and close the shell 8 as described above, and one end of the opening / closing rope 4, 4 is wound around the upper sheave 3a and the lower sheave 6a back and forth many times. Later, the ends are connected to both sides of the balancer 3b on the upper block 3. The other ends of the opening and closing ropes 4, 4 extend upward through rope guides 3c, 3c of the upper block 3, and are connected to an operation room via a crane (not shown).

The lower block 6 includes the shells 8,
The upper part of 8 is connected openably and closably. That is, the shells 8, 8 are composed of two parts on the left and right, and the upper parts of the shells 8, 8 divided on the left and right are connected to the lower block 6 so as to be rotatable left and right by the main shafts 7, 7.
The left and right ends of the left and right shells 8 and 8 are provided at the lower ends of the arms 5 and 5 provided on the left and right, respectively.
b and 5b are connected rotatably.

The shell 8 opens and closes downward and to the left and right, and picks up, for example, wood chips and scoops it up. The shell 8 moves up and down and opens and closes integrally with the lower block 6 which moves up and down by the opening / closing rope 4. That is, when the lower block 6 moves down, the shell 8 opens on both sides, and when the lower block 6 moves up, the shell 8 closes.

The left and right shells 8 and 8 have a front surface symmetrical with respect to the center thereof, one of which has a "U" shape and the other has a "reverse" shape, and the shape is in the longitudinal direction. When viewed from a plane, its longitudinal direction looks like a rectangular shape that is long laterally, and the left and right shells 8, 8 have their longitudinal directions parallel to the upper lower block 6. ing. Further, both ends in the longitudinal direction of the left and right shells 8 extend outward from both ends in the longitudinal direction of the lower block 6 thereabove, and are long. You can grab and scoop up.

On the leading end side of the left and right shells 8 and 8, nails 8 a and 8 a are formed at regular intervals so as to bite into, for example, a wood chip so as to be easily grasped. The claws 8a, 8a of the left and right shells 8, 8 are formed so as to be shifted between the other claws 8a and 8a so as to be engaged with each other.

End plates 8b, 8b are respectively attached to both ends of the left and right shells 8, 8 in the longitudinal direction.
End plates 8b, 8 attached to both ends of left and right shells 8, 8
b are attached so that there is a certain gap when the left and right shells 8, 8 are closed.

The bottom-draining assisting tools 9 and 9 are auxiliary tools mounted on the tip sides of the left and right shells 8 and 8 when the bottom of a loose object is dredged. That is, the claws 8a, 8a formed on the distal end sides of the left and right shells 8, 8 have an excellent advantage when biting into a loose object, but have a great advantage when the bottom of the loose object is drowned.
a and 8a have the disadvantage of damaging the floor surface such as the bottom of the ship, and have the disadvantage that loose objects fall out from the gaps between the claws 8a. Is attached.

Each of the bottom dredge assisting tools 9 has a shape of a flat plate, and when the bottom is dredged, comes into contact with the floor surface.
Has a straight lower end surface, which makes it easier to scrape loose objects when the bottom is dredged. The bottom dredge assisting tool 9 is mounted on the inner surface side of the shell 8. An engagement recess 9a into which the tip of the claw 8a is inserted is formed at the lower end on the outer surface side of the bottom dredge assisting tool 9 which is in contact with the inner surface side of the shell 8.

On the inner surface side (back side of the outer surface side) of the bottom dredge assisting tool 9 which does not abut on the inner surface side of the shell 8, two connecting portions are provided at a position corresponding to the mounting position of the claw 8a with a slight gap. Plates 9b, 9b are vertically mounted on the inner surface. Each of the connecting plates 9b, 9b has a circular connecting hole 9c, 9c on its upper side.
Are formed. By inserting a pin (not shown) into the connection holes 9c, 9c and a connection hole (not shown) of the connection plate (not shown) protruding from the inner surface side of the shell 8, the bottom dredge assisting tool 9 is connected to the shell 8. I have. Further, the flat plate of the auxiliary device for bottom dring between the connecting plates 9b, 9b is cut out from the upper part to the middle part.

The bottom dredge assisting tools 9 and 9 shown in the figure are divided, and when they are mounted on the shells 8 and 8, a plurality of bottom dredge assisting tools 9 and 9 are attached to the shells 8 and 8. Attached in the longitudinal direction. Further, in order to prevent the loose objects from being spilled by closing both ends when the left and right shells 8 and 8 are closed, an end of the bottom dredge assisting tool 9 corresponding to both end positions of the shells 8 and 8 is provided. The plate 9d is mounted perpendicular to the flat plate.

Next, the operation based on the configuration of the above embodiment will be described below. For example, when loading and unloading wood chips from the hold, the open / close ropes 4 and 4 are returned, the lower block 6 is lowered, and the left and right shells 8 and 8 are opened. Lower the grab bucket 1 into the hold. In the shell-type grab bucket 1 that has been lowered, the claws 8a at the tips of the shells 8, 8 that open left and right bite into the inside from the surface of the wood chip, and a large amount of space is left between the shells 8, 8 that open left and right. Wood chips enter.

Thereafter, the shells 8, 8 opened to the left and right are closed. This operation is performed by raising the opening / closing ropes 4 and 4 to raise the lower block 6. That is,
When the lower block 6 rises, the shell 8, which opens left and right,
8 begin to close inward each centering on the upper part. A large amount of wood chips enter into the inside of the shells 8, 8 which have begun to close inside. By closing the left and right shells 8, 8 and pulling up the shell-type grab bucket 1, a large amount of wood chips are obtained. It will be grabbed and scooped up.

Since the shells 8, 8 have a rectangular shape when viewed from above, the accumulated wood chips are picked up in a rectangular shape and scooped up. The hold is formed in a rectangular shape when viewed from a plane, while the shells 8 and 8 are rectangular when viewed from a plane, so that the longitudinal side surfaces of the shell 8 are in close contact with the rectangular side wall surfaces of the hold. The wood chips accumulated on the side wall portions can also be grabbed and picked up. For this reason, cargo handling work from the hold is performed efficiently.

When most of the wood chips have been loaded and unloaded, the bottom shells 8 and 8 are equipped with bottom-drilling aids 9 and 9, respectively. The mounting work of the bottom dredge assists 9, 9 is performed by arranging the bottom dredge assists 9, 9 on the floor side by side with the left and right sides separated, and lowering the shells 8, 8 opened left and right, The bottom end of the shells 8, 8 are assisted by bottom aids 9, 9
And the shell 8 and the bottom dredge assisting tool 9 are connected by pins (not shown). In this case, for example, the supporting members 9 for the bottom dring can be leaned using a leaning support 10 as shown in FIG.

At the tip of the shells 8, 8, an auxiliary tool 9
After the shell 9 is mounted, the shell-type grab bucket 1 is lowered into the hold, and the bottom dredge assisting tools 9, 9 mounted on the shells 8, 8 opened left and right are brought into contact with the floor surface of the hold. Thereafter, when the shells 8, 8 are started to be closed, the bottom dredge assisting tools 9, 9 begin to close in a state of contacting the floor, so that the wood chips scattered on the floor are removed by the bottom dredge assisting tool. It is raked without leakage by 9, 9 and enters into closed shells 8, 8 and it is possible to achieve a bottom dredge. Further, in this case, since the lower end surfaces of the bottom dredge assisting tools 9 and 9 are parallel to the floor surface, the floor surface is not damaged.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the description has been mainly given of the case of wood chips as loose objects, but the present invention is not limited to this, and it is needless to say that loose objects such as powders and granules can be applied. .

[0036]

As is apparent from the above description, according to the shell-type grab bucket according to the first aspect of the present invention, the shell-type grab bucket is separated from the center line of the upper block upper surface on both sides in the longitudinal direction. Since the lower ends of the supporting ropes to be hung are connected to each other, the shell-type grab bucket is hung on two supporting ropes that are sufficiently separated from each other, and the shell-type grab bucket can be hung stably. It can prevent the bucket from turning,
Bucket control can also be facilitated.

Furthermore, since the pair of left and right shells have a rectangular shape in a plan view that is long in one direction, loose objects accumulated on side wall portions that are rectangular when viewed from above, such as a hold, can be used. You can grab and scoop without leakage. Furthermore, since the left and right shells are rectangular in one direction, the escape when scraping is small, and the scraping efficiency is superior to the conventional orange peel bucket.

According to the second aspect of the present invention, the bottom dring assisting tool is attached to the tip of the shell of the shell type grab bucket according to the first aspect. By doing so, it is possible to prevent the claw at the tip of the shell from hitting the floor surface and to avoid damaging the floor surface with the claw. Since it is formed in a straight line, there is no gap between it and the floor surface when the lower end surface contacts the floor surface,
This provides a very novel and beneficial effect, such as efficient bottom dring without the leakage of loose objects during the gathering.

[Brief description of the drawings]

FIG. 1 is a front view of a shell-type grab bucket showing an embodiment of the present invention.

FIG. 2 is a partially omitted side view of a shell-type grab bucket showing an embodiment of the present invention.

FIG. 3 is a partially omitted bottom view of the shell-type grab bucket showing the embodiment of the present invention.

FIG. 4 is a structural view showing a wrapping state of an opening / closing rope showing an embodiment of the present invention.

FIG. 5 is a plan view of a bottom dredge assisting tool showing an embodiment of the present invention.

FIG. 6 is a front view of a bottom dredge assisting tool showing an embodiment of the present invention.

FIG. 7A is a view taken in the direction of arrows AA in FIG. 6; FIG. 7B is a view as seen from the direction of the arrows BB in FIG. 6.

8 is a view as viewed in the direction of arrows CC in FIG. 7;

FIG. 9 is a front view of a shell-type grab bucket equipped with a bottom dredge assisting device according to an embodiment of the present invention.

FIG. 10 is a front view of a conventional orange peel bucket.

FIG. 11 is a plan view of a conventional orange peel bucket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shell-type grab bucket 2 Support rope 3 Upper block 3a Upper sheave 3b Balancer 3c Rope guide 3d Roller guide 3e Handrail 4 Opening / closing rope 5 Arm 5a Upper arm pin 5b Lower arm pin 6 Lower block 6a Lower sheave 7 Main shaft 8 Shell 8a End plate 9 Auxiliary tool for bottom dredge 9a Engagement dent 9b Connection plate 9c Connection hole 9d End plate 10 Leaning support

Continuation of the front page (56) References JP-A-49-20854 (JP, A) JP-A-58-176157 (JP, U) Patent 1664769 (JP, C1) JP-A-44-14280 (JP, Y1) ( 58) Fields surveyed (Int. Cl. ⁶ , DB name) B66C 3/00-3/20

Claims (2)

(57) [Claims] An upper block extending in one direction is provided at an upper portion of a shell-type grab bucket, and a lower end of a support cable for suspending the shell-type grab bucket at a center line on an upper surface of the upper block and separated from both sides in a longitudinal direction thereof. Are connected to each other, and a pair of left and right arms are rotatably connected to the left and right ends of the upper block downward at predetermined intervals in the longitudinal direction so as to be rotatable, and a lower block that is long in one direction below the upper block in the longitudinal direction. Are arranged in the same direction as the longitudinal direction of the upper block and arranged vertically in parallel, and a pair of left and right rectangular shells in a plan view that are long in one direction below the lower block are defined by the longitudinal direction of the upper block and the lower block. And the upper part of the pair of left and right shells is pivoted to the left and right sides of the lower block. And a pair of left and right shells are rotatably connected to the lower ends of the left and right arms to form a pair of left and right shells that can be opened and closed downward, so that the claws alternately engage the tips of the left and right shells. The upper block and the lower block are provided with an upper sheave and a lower sheave respectively on both sides at the center in the longitudinal direction of the upper block and the lower block, and an opening and closing rope that reciprocates between the upper and lower upper sheaves and the lower sheave on both sides is wound many times. Along with a booster mechanism, one end of each open / close rope wound on both sides is connected to a balancer that is swingably provided at the center in the longitudinal direction of the upper block upper surface, and each open / close rope on both sides is connected via the balancer. Shell-type grab bucket characterized by interlocking connection. 2. An auxiliary tool mounted on the tip side of the left and right shells of the shell-type grab bucket according to claim 1, when the bulky object is to be dredged, and has a flat plate shape. In the case where the lower end of the flat plate contacting the floor surface is formed in a straight line, an engagement recess is formed at the lower end of the inner surface of the flat plate contacting the inner surface of the shell to insert the tip of the claw. The connecting plates are vertically mounted on the inner surface side with a slight gap between them at the positions corresponding to the nail mounting positions, and a connecting hole is formed on the upper side of each connecting plate. An auxiliary tool for bottom dredging, wherein a notch is formed in a shape from the upper part to the middle part.