JPS6335531B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo unloading device, which can improve the cargo unloading efficiency particularly when discharging bulk materials such as wood chips, iron ore, and coal from a storage facility, and can significantly reduce equipment costs. The present invention relates to a cargo unloading device suitable for large-volume cargo handling.

There are various methods of discharging wood chips and the like stored in onshore storage facilities or storage ships for shipping, etc. Below, conventional examples will be described and the problems thereof will be clarified.

In the method for discharging wood chips shown in FIG. 1, the chips stacked on a chip pile a are collected by a bulldozer b onto a chain conveyor c, conveyed by the chain conveyor c to a dispensing conveyor, and then discharged by a dispensing conveyor d. This method uses a bulldozer B, which not only requires manpower, but also has poor delivery efficiency and is not suitable for mass transportation.

Next, in the method shown in Figure 2, the chips f loaded on the chip carrier e are scooped up by a bucket h of a traveling jib crane g installed on the deck, passed through a hopper, and dropped onto a delivery conveyor i to be carried out. It is something to do. Since this method involves intermittent cargo handling using the bucket h of the jib crane g, the unloading efficiency is poor and it is not suitable for large-volume cargo handling.

Furthermore, other conventional examples of payout methods are shown in Figure 3A.
This will be explained according to B and C. As shown in Figure 3A,
In this system, in storage k for cargo j, the bottom wall l of storage k is
A valley-shaped hopper portion m that narrows downward is formed on a steep slope. A slit n is provided at the lower end of the hopper portion m along its longitudinal direction, as shown in FIG. 3B. A pedestal o is disposed along the slit n, a delivery conveyor p is provided on the pedestal o, and a supply device q for a load j that can run on the pedestal o is provided. Supply device q has a third
A rotating claw r as shown in Figure C is provided, and the rotating claw r
is configured to be able to move across the slit in the n direction. When the supply device q is run on the frame o while rotating the rotating claw r, the load j is scraped off from the slit n to the delivery conveyor p and delivered as the rotating claw r rotates.

In this method, there is a large dead space s shown by diagonal lines in the figure outside the hopper part m, so the storage efficiency is poor, and in order to store a large amount,
The hopper sections m must be provided in multiple strips, and as a result, it is necessary to increase the size of the storage area k and to install additional delivery conveyors p, supply devices q, etc., resulting in an increase in equipment costs. Further, since the amount of scraping is adjusted by the rotation of the rotary claw r in the direction of the slit n, the scraping of the rotary claw r is performed only on one side, resulting in problems such as poor efficiency.

The present invention has been devised to effectively solve the above-mentioned conventional problems.

An object of the present invention is to improve the efficiency of unloading cargo such as wood chips, iron ore, coal, etc. from a storage facility, to promote labor saving, and to reduce equipment costs for storage facilities, etc. The goal is to provide equipment.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 4 shows an example in which the device according to the present invention is applied to a wood chip storage ship, and FIG. 5 shows an enlarged view of the X portion of FIG. 4.

In Figures 4 and 5, 1 is a storage ship;
Wood chips 2 are loaded. A plurality of through grooves 4 are provided in the floor surface 3 of the storage ship 1 in parallel to each other in the longitudinal direction of the storage ship 1 (in the illustrated example, six grooves are provided). A conveyor 5 is provided below each of the through grooves 4 for conveying the wood chips 2 that have been brushed off from the through grooves 4. A support stand 6 is provided on and along the through groove 4, and the support stand 6 is supported by a cross beam 7 provided in a direction perpendicular to the support stand 6. Further, the upper surfaces of the support base 6 and the cross beam 7 are formed to have a triangular cross section in order to prevent wood chips 2 from accumulating.

Two I-shaped rails 8 as shown in an enlarged view in FIG. A running body 11 is provided which has wheels 10 and can run along the rail 8 below the support base 6. As shown in FIGS. 5 and 7, the traveling body 11 has horizontal V-shaped extensible dispensing claws 12a and 12b on both sides in the reciprocating direction of the traveling body 11.
are provided for each.

Next, the operation of this embodiment will be described.

As shown in FIG. 7, the traveling body 11 moves along the through groove 4 along the rail 8 while extending the dispensing claws 12a, 12a on the side of the traveling direction T of the traveling body 11 and projecting the through groove 4 outward. The dispensing claw 12a,
The wood chips 2 in front of 12a are scraped toward the through groove 4 side and brushed off into the through row 4. When the traveling body 11 travels and reaches the end of the through groove 4, the traveling body 1 is moved next.
1 in the opposite direction. At this time, the claws 12a, 1
2a is contracted, and conversely, the claws 12b, 12b are extended. In this way, the traveling body 11 is caused to reciprocate and the load is discharged from the groove 4 and supplied to the conveyor 5.

When the loading amount of wood chips 2 in the storage ship 1 is large, the resistance of the traveling body 11 to the dispensing claw 12 is large, but when the claw 12 is in the most contracted state, the distance between the tips of the claws 12a, 12a in FIG. If it is set to ₁ , the traveling body 11 can be driven and paid out with a small output. As the height of the cargo decreases, the resistance of the claws 12 also decreases, so the distance between the tips of the claws 12a, 12a is reduced as shown in the figure.
It can be extended to gradually increase l ₂ and l ₃ , and it can be scraped from a wide range, so the scraping amount increases. Then, when you're at the bottom, use one nail.
Stretch 2 to the maximum and pay it out. By expanding and contracting the discharging claw 12 in this manner, it is possible to discharge cargo over a wide range with one traveling body 11, and the number of traveling bodies 11, conveyors 5, etc. can be significantly reduced. Further, even if the wood chips 2 become jammed due to arching, this can be resolved by extending the claws 12.

In the above embodiment, the traveling body 11 may be driven by a drive motor mounted on the traveling body 11.
Alternatively, it may be pulled from both ends of the traveling body 11 via a rope. Further, the dispensing claw 12 is configured to be rotatable, and when changing the traveling direction, the claw 12 is rotated to face the traveling direction of the traveling body 11, so that the claws 12a, 12a and the claws 12b, 12b are rotated. Only one of them may be omitted. Furthermore, a plurality of running bodies 11 may be provided in each through groove 4 to further increase the dispensing capacity. Further, in the above embodiment, the case where wood chips 2 were used as the stored material was described, but it goes without saying that the present invention can be applied to bulk materials in general such as iron ore and coal.

As is clear from the above description, the present invention exhibits the following excellent effects.

(1) Continuous and highly efficient cargo unloading is possible, and the unloading capacity is greatly increased, making it suitable for handling large quantities of cargo.

(2) Since the floor of the cargo storage area is level and the load is forcibly scraped together using the dispensing claw, there is no dead space at the bottom of the storage area that occurs with conventional hopper-shaped floors. Storage efficiency is good and cargo storage facilities can be downsized. It also improves the turnover rate of storage facilities.

(3) Since the dispensing claws are extendable and retractable on both sides of the through groove, dispensing over a wide range is possible with one traveling body, and the dispensing capacity is large, and the number of traveling bodies, conveyors, etc. can be greatly reduced. This reduces the cost of storage equipment. In addition, even with heavy loads such as iron ore, the amount of extension of the dispensing claws can be adjusted, so the load can be raked with the minimum necessary force.

(4) Since it is possible to unload from a wide area, there is no variation in the unloaded cargo and it is possible to unload evenly. Therefore, loading and unloading of cargo is carried out naturally. Also, since it is discharged from a wide area, it is easy to balance the cargo on storage ships.

(5) Automation of dispensing work can be further promoted.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of a conventional cargo unloading system, Fig. 2 is a side sectional view showing another conventional embodiment, and Fig. 3A is a schematic cross-sectional view showing another conventional embodiment. , Figure 3B is an enlarged cross-sectional view of the same main part, Figure 3C
3B is a sectional view taken along the line B, FIG. 4 is a sectional perspective view showing an embodiment in which the device according to the present invention is applied to a storage ship, and FIG. 5 is an enlarged sectional view of the X section in FIG. 4. FIG. 6 is an enlarged sectional view of the Y section in FIG. 5, and FIG. 7 is a view taken along the - line in FIG. 5. In the figure, 3 is the floor surface, 4 is the through groove, 6 is the support base, 1
1 is a running body, and 12, 12a, 12b are payout claws.

Claims (1)

[Claims] 1. In a cargo unloading device that discharges cargo from a through groove provided in a horizontal floor of a cargo storage area, a support is provided on the floor so as to cover the through groove, and a support is provided below the support. A running body is provided that is movable on the through groove along the through groove, and the running body is provided with dispensing claws that are extendable and retractable outwardly on both sides of the through groove and whose scraping range can be adjusted by the amount of extension thereof, A load discharging device characterized in that a traveling body is configured to run on a through groove and a load is discharged into the through groove by a dispensing claw.