JP2742552B2 - Work handling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work handling device capable of simplifying the handling of a heavy work with a container or the like.

[0002]

2. Description of the Related Art In recent years, containers are heavily used in land and sea transportation, and a heavy work of several tons, for example, 7 to 9 tons (hereinafter referred to as "heavy work"), such as a steel plate hoop material and a steel ingot. ) Is often used in large containers.

In general, cargo handling such as loading and unloading works into and from a container can enter the container.
It is performed using a small forklift such as 1.5 tons. However, it is impossible to place the heavy work on a fork of such a small forklift and carry it.

[0004] Therefore, in the prior art, unloading of a heavy work, for example, removal from a container, is performed as shown in FIGS.
First, of the plurality of heavy works W placed on the sleeper B, the heavy work W1 on the entrance / exit side is carried out using a large forklift F such as 10 tons.

Next, the heavy work W2, W3 located inside the heavy work W1 is lifted by a jack operation or the like by an operator, and a roller conveyor R capable of bearing weight is laid on the container floor instead of the sleeper B. , The inner heavy work W2 is drawn out of the container C and moved to the container entrance by a towing machine such as a winch D. Also, the heavy work W drawn out in this way
Are sequentially placed on a fork by a large forklift F and transported to a desired position.

[0006]

However, in the above-mentioned cargo handling work, first, a jack operation for lifting the heavy work W, a second work for laying the roller conveyor R, and a third, a winch operation, etc. This requires a large amount of labor and time, such as the need for each of the above operations, resulting in a problem that the work efficiency is poor and the burden of manual work is large, thus impairing safety.

An object of the present invention is to provide a work handling apparatus capable of solving the above-mentioned problems by eliminating the above-mentioned jack operation, roller laying work, and the like.

[0008]

According to the present invention, there is provided a base having a locking portion mounted on a lift bracket which can be moved up and down along a mast of a forklift, and connected to the base in such a manner as to be slidable in a vertical direction. A fork-shaped elongated frame extending forward and a carrier tool body supporting wheels, and the carrier body is extended along the elongated frame and a work is placed on the upper surface. This is a work loading / unloading device in which a load receiving frame is liftably arranged by interposing a lifting drive.

[0009]

The heavy work on the load receiving frame can be lifted by the lifting drive. Therefore, the load receiving frame can lift a heavy work supported by a sleeper, for example, by lifting it from the sleeper, and the weight of the heavy work can be supported by wheels of the carrier main body.

In addition, the forklift moves the heavy work by generating a small traction force enough to roll the wheels of the carrier as a result of connecting the carrier body to the base portion mounted on the lift bracket. Therefore, a small forklift can be used for moving heavy work.

Further, the carrier main body is slidably connected to the base in a vertical direction so that unevenness of a road surface and a difference in height between a wheel of a forklift and a wheel of the carrier main body can be reduced. It can be absorbed by sliding in the up and down direction, and the tilting of the carrier body is reduced, so that excessive stress is prevented from being generated at the connecting portion, and no structural destruction occurs. This can preferably cope with, for example, a difference in floor height when the work is taken in and out of the container.

When the wheels are so-called tandem wheels, the unevenness of the running road surface can be absorbed by the swinging of the tandem link, and the tilting of the carrier body can be further reduced, so that the wheels are excellent in vibration absorption and the road surface followability of the wheels is improved. By increasing the vehicle height, the chance of contact with the wheels can be increased and the running stability can be improved.

In addition, when the long frame is swingably connected to the base in a small angle range, the long frame can further absorb the impact from the road surface. It can be advantageously used in combination with the body.

[0014] Further, the base portion has upper and lower locking fittings capable of adjusting the vertical interval, and the upper locking fitting is provided with an upper locking portion attached to a finger bar on the lift bracket. At the same time, by providing the lower locking part with a lower locking part attached to the finger bar below the lift bracket, the interval between the upper and lower finger bars is different, for example, it is possible to mount it on a forklift of a different manufacturer. Is preferred.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, a work loading / unloading device 1 includes a base portion 5 having a locking portion 4 attached to a lift bracket 3 that can move up and down along a mast 2 of a forklift, and slides vertically on the base portion 5. A forklift has a fork-shaped long frame 6 which is freely connected and extends forward, and a carrier body 9 which supports wheels 7. In this embodiment, the forklift is mounted in a container C as shown in FIG. A small forklift f with a mast height that can enter and exit is adopted.

The lift bracket 3 has rollers on both sides which can roll in the groove surface of the mast 2, and has upper and lower finger bars 3A, 3
B, and in this example, the locking portion 4 of the base portion 5 is
The upper and lower finger bars 3A and 3B are attached to the upper and lower finger bars.

As shown in FIGS. 1 and 2, in the present embodiment, the base portion 5 is provided on the pair of side plates 5A with upper and lower locking metal fittings 12A, 12A.
B, and as an engaging portion 4, an upper engaging portion 12A is provided on the upper engaging member 12A to be attached to the finger bar 3A on the lift bracket 3, and the lower engaging member 1A is provided.
2B is provided with a lower engaging portion 4B attached to the lower finger bar 3B.

In the present embodiment, the lower latch 12B is
A plurality of holes T1 and T2 are formed in the side plate 5A and opened in parallel in the height direction. In this example, two holes T1 and T2 are formed.
By selectively screwing the screw means N to T2, it is possible to adjust the vertical distance between the upper and lower locking members 12A, and to cope with the case where the distance between the upper and lower ends of the upper and lower finger bars 3A and 3B is different. Can.

It is to be noted that the above-mentioned hole may be formed as a long hole extending in the height direction so that the vertical interval of the above-mentioned locking metal can be adjusted steplessly. On the finger bar 3A on the forklift, a stopper pin P capable of fixing the position of the base portion 5 or the like may be appropriately arranged.

Further, the base portion 5 has a circular shaft hole 13A extending forward from the side plate 5A near the lower end.
Are fixed, and the long frame 6 is slidably connected to the connecting piece 13 in the vertical direction.

As shown in FIG. 2, the long frame 6 is
A is a fork made of a grooved material having a hanging material 6B hanging from both ends in the width direction of A, and a vertical portion 14 having a long hole 15 extending vertically is formed on the base portion 5 side. .

The long frame 6 is vertically slidably connected to the base portion 5 by inserting a slide shaft 16 fixedly secured to the connecting piece 13 through rotation into the long hole 15. ing.

As shown in FIG. 4, the slide shaft 16 has the same cross section as that of the shaft hole and faces each other.
Shaft end portions 16B having a substantially square cross section are formed at both ends of a shaft body 16A including two arc portions CL, CL and flat surfaces H, H connecting between the arc portions CL. Therefore, the slide shaft 16 can be easily inserted into the shaft hole 13A of the connecting piece 13.

The slide shaft 16 is provided at the shaft end 16B.
Is inserted into an opening 17 having the same shape as the cross section of the shaft end portion of the stopper plate 19, and the stopper plate 19 is bolted to the connecting piece 13, so that the slide shaft 16 is vertically In this state, it can be fixed so as not to rotate.

The elongated hole 15 formed in the vertical portion 14 of the elongated frame 6 can slide by sliding on the flat surface H of the slide shaft 16.
In this case, the gap t is formed between the flat surfaces H by reducing the dimension between the flat surfaces H with respect to the width dimension. Accordingly, the long frame 6 has a small angle range α, for example, α =
It can swing with respect to the base part 5 in the range of 2 to 5 degrees.

Further, the elongated frame 6 supports a wheel 7. In this embodiment, the wheel 7 extends in parallel with the elongated frame 6 and has an intermediate portion attached to a hanging member 6B of the elongated frame 6 by a pivot 2.
In FIG. 2, four pairs of tandem wheel bodies 19 are illustrated by being supported at both ends of a pair of left and right tandem links L pivotally supported by a zero.

Therefore, by absorbing the unevenness of the traveling road surface by the swing of the tandem link L, the tilting of the long frame body 6 is reduced, and the vibration transmission to the heavy work is prevented.
By increasing the road surface followability of the wheels 7, the opportunity for the wheels 7 to touch the ground can be increased, and the running stability can be improved.

The wheel 7 preferably employs a solid roller whose outer surface is covered with nylon or urethane which withstands a large load and is excellent in shock absorption and abrasion resistance.

The length of the long frame 6 may be, for example, approximately the same as or longer than the length of the container C shown in FIG. Preferably, the length is set to about 80 to 240 cm for the operability of the forklift f. In addition, in order to secure rigidity and to mount the elevating drive unit 11 described later, the reinforcing plate 25 extending between the upper plate 6A of the long frame 6 and the right and left hanging members 6B is intermittently fixed.

The transporter body 9 constructed as described above is provided with a load receiving frame 10 extending along the long frame 6 and capable of mounting a heavy work W on the upper surface thereof by interposing a lifting drive 11 therebetween. It can be lifted freely.

The load receiving frame 10 is provided at both ends in the width direction of the upper plate 21 extending along the long frame 6 with the hanging members 6 of the long frame 6.
By providing the hanging piece 22 along the outer surface of B, the elongated frame 6 is substantially covered. Such a load receiving frame 10 has, for example, a width of about 200 to 300 mm, but is not limited thereto.

The piston rod 11A of the lifting drive 11 is screwed to the upper plate 21. It is important that such a load receiving frame 10 be configured to be smaller than the height of the sleeper B, that is, as low as possible, at the lowering position of the lifting / lowering driving device 11.

In this embodiment, the lifting drive 11 has a small stroke, for example, a stroke of about 30 to 50 mm, which is attached to the reinforcing plate 25 fixed to the long frame 6, and has a large lifting force. Three cylinders are juxtaposed, and the load receiving frame 1 is attached to an upwardly facing piston rod 11A.
0 is screwed as described above. Therefore, the heavy work W placed on the upper plate 21 of the load receiving frame 10 can be lifted and lowered by the operation of the lifting drive 11.

In addition to the case where a linear motion machine such as a hydraulic cylinder is directly used as the lifting / lowering drive 11,
A mechanism for multiplying power using a link may be used in combination, and furthermore, a mechanism using a rotating machine in combination with a link as the lifting / lowering drive 11 may be appropriately modified.

In the present embodiment, the forklift f is provided with a manifold (not shown) capable of supplying hydraulic pressure to the lifting drive 11 on a fixed mast of the mast 2 or the like. It may be configured appropriately so that hydraulic oil is supplied from a well-known hydraulic mechanism for cargo handling. This hydraulic oil supply operation is performed by a forklift f
It can be easily achieved by operating a lever, switch, etc. provided in the driver's seat.

The work loading and unloading device 1 is locked by a pair of left and right lift brackets of the forklift f at a distance suitable for the heavy work W by the stopper pins P, and a manifold (not shown) is appropriately provided. And the lifting drive 11 are connected by a hydraulic hose. When both the carrier body 9 and the load receiving frame 10 have a width of about 1000 mm, they can be mounted as one.

When no load is placed on the load receiving frame 10, the forklift f lifts the lift bracket 3 along the mast 2, thereby lifting the carrier body 9 together and lifting the wheels 7 off the road surface. As a result, a smooth turning travel can be ensured, and the vehicle can easily travel to, for example, the position of the heavy work W schematically shown in FIG. In addition, as shown in FIG.
The inward heavy work W placed and stored on the sleeper B in the container C can be moved to the container entrance as follows.

First, the sleepers B, B on which the heavy work W is placed
The carrier main body 9 and the load receiving frame 10 of the work loading / unloading devices 1 and 1 are inserted into the space between them. At this time, before or after the insertion, the lift bracket 3 is lowered in advance and the wheels 7 of the transporter main body 9 are securely grounded. Base part 5
It is preferable that the lift bracket is lowered and positioned so that the slide shaft 16 is located at a substantially middle position of the long hole so that the slide frame 16 can slide up and down.

Next, after confirming that the wheels 7 are grounded, the lifting drive 11 is operated by an appropriate operation to raise the load receiving frame 10, so that the heavy work W is
Can be lifted over

As described above, the work loading / unloading device 1 is connected to each wheel 7 via the load receiving frame 10, the lifting drive 11 and the long frame 6.
Can receive the load of the heavy work W. In other words, the load of the heavy work W does not act on the base portion 5 and eventually on the lift bracket 3 of the forklift f.

Further, in this state, the forklift f travels in a straight line, in this example, is moved back and forth to pull the heavy work W together with the work loading / unloading device 1 carrying the heavy work W while the wheels 7 are in contact with the ground. Can be moved to the doorway.

As described above, the forklift f generates a slight traction force enough to roll the wheel 7 on which the load mainly acts without directly lifting the heavy load.
As a result of moving the heavy work W, it is possible to use a small forklift.

As described above, the connection between the base portion 5 and the elongated frame 6 during towing is performed by contact between the vertical surface of the elongated hole 15 and the flat surface H of the slide shaft 16, resulting in a contact area. And the concentration of stress on the slide shaft can be kept small.

At the entrance of the container, sleepers B are prepared on both sides of the forklift f and in parallel with the long frame body 30. The heavy work W is transferred onto the prepared sleepers B by the lowering of the load receiving frame 10 by the lifting / lowering drive 11. For example, at the entrance of the container C, a large forklift stands by, and the transferred heavy work W can be sequentially placed and carried out. As described above, the heavy work W can be moved by using the small forklift f that can enter and exit the container. As a result, direct work by humans can be eliminated, and work efficiency and safety during cargo handling can be improved.

At this time, even when the forklift f retreats from the container entrance due to retreat, the inclined plate K is laid between the tire contact height of the forklift f and the contact height of the wheels 7 of the work loading and unloading device 1. Although the displacement occurs in the height direction, as described above, the base unit 5 and the long frame body 6 can be slid in the up-down direction and swing in a small angle range. As a result of being able to slide downward, an excessive impact or stress acting on the connecting portion can be absorbed by such a step, and structural destruction at the connecting portion can be prevented.

In addition to this, even when the forklift f can be retracted and towed to another place away from the container, unevenness on the traveling road surface is caused by the connection between the base portion 5 and the carrier main body 9. In addition to the above, the tandem wheel body 17 can further absorb and absorb shocks in combination with the road surface followability of the tandem wheel body 17, thereby improving running stability and preventing heavy work from collapsing and improving safety. .

[0047]

As described above, the work loading and unloading device of the present invention does not apply a load directly to the forklift.
In addition, heavy work can be transferred without requiring manual labor as in a conventional apparatus, and safety and workability can be improved, and in particular, heavy work can be easily taken in and out of a container or the like.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing one embodiment of the present invention.

FIG. 3 is a perspective view showing a state where an example of a heavy work W is accommodated in a container.

FIG. 4 is a sectional view of a slide shaft.

FIG. 5 is a side view illustrating a conventional means for carrying a heavy work W in and out of a container.

FIG. 6 is a perspective view illustrating a conventional means for carrying a heavy work W in and out of a container.

[Explanation of symbols]

 2 Mast 3 Lift bracket 4 Locking part 5 Base part 6 Long frame 7 Wheel 9 Carrier body 10 Load receiving frame 11 Elevating drive W Heavy work

Continuing on the front page (72) Inventor Kanaizumi ▲ Ko ▼ Haru 6-1-1 Heiwajima, Ota-ku, Tokyo Inside Tokyo Nichiyu Co., Ltd. (72) Inventor Tsuneka Sachiya 13-5 Nishigaoka, Kohoku-ku, Yokohama, Kanagawa 72) Inventor Masashi Uchi 2-11-14 Wakihama-cho, Chuo-ku, Kobe City, Hyogo Prefecture Inside Shinko Shipping Co., Ltd. (56) References JP-A-63-165297 (JP, A) JP-A-62-65897 (JP, A) JP-A-61-267696 (JP, A) JP-A-7-17696 (JP, A) JP-A-3-81179 (JP, U)

Claims (4)

(57) [Claims] 1. A fork-shaped base portion having a locking portion mounted on a lift bracket that can be moved up and down along a mast of a forklift, and a fork-shaped member slidably connected to the base portion in a vertical direction and extending forward. A carrier frame that supports a wheel on a long frame, and a load receiving frame extending along the long frame and capable of mounting a work on an upper surface of the carrier body, A work loading and unloading device that can be lifted freely by interposing 2. The tandem wheel body according to claim 1, wherein the wheel is supported at both ends of a tandem link that extends in parallel with the elongated frame and has an intermediate portion pivotally supported by the elongated frame. The work handling apparatus according to claim 1, wherein: 3. The work loading and unloading device according to claim 1, wherein the long frame is connected to the base so as to be swingable within a small angle range. 4. The base unit is capable of adjusting a vertical interval,
A lower latch is provided, and an upper latch is attached to the upper finger bar of the lift bracket on the upper latch, and the lower latch is attached to the finger bar below the lift bracket. 4. The work loading and unloading device according to claim 1, further comprising a lower engaging portion to be attached.