JP2002193429A - Bucket cleaning method and device for continuous unloader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bucket cleaning method and device with high cleaning effect and without polluting the environment. SOLUTION: A bucket cleaning space capable of storing a scratching part 3 of the continuous unloader is formed in a pier, a water jet tool 23 jetting water toward the bucket 4 is disposed in the bucket cleaning space, and the bucket 4 is cleaned by the jet water, while performing scratching operation in the bucket cleaning space. The water is jetted in the bucket cleaning space so that adhesions stuck thereto are well removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cleaning a bucket of a continuous unloader, and more particularly to a method and an apparatus for cleaning a bucket which have a high cleaning effect and do not pollute the environment. .

[0002]

2. Description of the Related Art As shown in FIG. 4, a continuous unloader is provided with an arm 1 extending from the pier to the sea, an elevator 2 provided at the tip of the arm 1, and a lower end of the elevator 2. And a scraping section 3 for scraping a load such as ore. A number of buckets 4 are provided so as to be able to circulate by an endless chain from an appropriate height position of the elevator 2 to the scraping unit 3. 5 is a traveling frame for traveling on the pier, 6 is a revolving frame for revolving the arm 1, and 7 is an up / down cylinder for raising / lowering the arm. The elevator 2 can rotate the scraping unit 3 by rotating itself. The arm 1 also extends in the opposite direction of the elevator 2, and at the opposite end, a counterweight 8 that bears the horizontal balance of the arm 1.
Is provided. 9 is a conveyor provided from the elevator 2 to a hopper (not shown) below the traveling frame 5.

[0003] The scraping operation for scraping the load in the hold is performed by circulating the bucket 4. That is, the bucket 4 passes over the scraping unit 3 and bites into the load at the tip of the scraping unit 3. In the lower part of the scraping unit 3, the bucket 4 moves from the front end to the rear end of the scraping unit 3 to scrape the load, and the elevator 2
Then, when the bucket 4 moves upward from below and conveys the load, when the bucket 4 comes out on the conveyor 9, the bucket 4
Turns over and delivers the load to the conveyor 9, and the conveyor 9
To transport the load to the hopper.

When the coal is unloaded, the coal adheres to the bucket 4. The deposit causes the following problems. (1) If there is any deposit on the bucket 4, the elevator side becomes heavy, and the horizontal balance of the arm 1 is lost. For this reason,
When the undulating operation of the arm 1 is performed, the undulating cylinder 7 is overloaded. (2) If there is any deposit on the bucket 4, the amount of the cargo to be discharged from the bucket 4 to the conveyor 9 decreases, and the cargo handling efficiency decreases.

Therefore, it is desired to wash the bucket 4. Conventionally, water is pumped up by the bucket 4, and the bucket 4 is inverted at the turning point in the elevator 2 so that the spilled water falls on the lower bucket 4. Methods of watering are known.

[0006]

In the conventional method, since only water is sprinkled, it is not possible to remove sticking deposits. If water can be discharged by water supply or a pump, it is possible to remove deposits, but it is difficult to install a new water distribution pipe in the elevator 2.

Conventionally, wastewater from bucket washing has been dumped into the sea, and no measures have been taken to prevent harbor pollution.

An object of the present invention is to solve the above-mentioned problems and to provide a bucket cleaning method and apparatus which have a high cleaning effect and do not pollute the environment.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, a method of the present invention is to form a bucket washing space on a jetty capable of accommodating a scraping portion of a continuous unloader, and to direct the bucket washing space to the bucket washing space. A bucket is used to wash the bucket by discharging water while performing a scraping operation in the bucket washing space.

[0010] The wastewater from the bucket washing may be collected in a septic tank.

When the scraping section is accommodated in the bucket cleaning space, a relative position with respect to the bucket cleaning space is recognized by a sensor provided in the scraping section, and the scraping section is moved based on the recognition. It may be moved into the bucket washing space.

Further, in the apparatus of the present invention, a bucket washing tank capable of accommodating a scraping portion of a continuous unloader is provided on the pier, and a water discharging device for discharging water toward the bucket is provided on an inner peripheral portion of the bucket washing tank. Things.

[0013]

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

As shown in FIG. 1, the bucket cleaning apparatus for a continuous unloader according to the present invention is provided with a bucket cleaning tank 10 capable of accommodating the scraping section 3 of the continuous unloader on a pier. A water discharging device (see FIG. 2) for discharging water toward the bucket 4 is installed on the inner peripheral portion of the water discharging device. Arm 1, elevator 2, scraper 3, bucket 4,
The running frame 5, the turning frame 6, the undulating cylinder 7, the counterweight 8, and the like are the same as those shown in FIG.

A sensor (not shown) for recognizing an object distance is provided below the scraping section 3. The sensor is, for example, an ultrasonic sensor, and a conventional sensor for recognizing a hold hatch may be used. In the present invention, an automatic operation function is provided for recognizing the relative position between the scraping unit 3 and the bucket washing space by this sensor and moving the scraping unit 3 into the bucket washing space based on this recognition.

As shown in FIG. 2, the bucket washing tank 10 is a skeletal structure having a rectangular opening 21 opening upward to receive a scraping portion. Floor 22
From the opening 21 to the opening 21 is at least high enough to accommodate the lower portion of the scraping unit 3. The inside of the bucket cleaning tank 10 is a bucket cleaning space.

At a plurality of locations on the inner periphery of the bucket washing tank 10, washing nozzles 23 for discharging water toward the bucket 4 are provided. The arrangement of the cleaning nozzle 23 is arbitrary, but in this embodiment, the left and right ribs 2 are viewed from the AA cross section.
4, a side cleaning nozzle 23a for mainly cleaning the side surface of the bucket and an upper surface cleaning nozzle 23b for mainly cleaning the upper surface of the bucket are mounted at a high position of the right and left ribs. When viewed from above, the cleaning nozzles 23 obliquely rearward are arranged at appropriate intervals in the longitudinal direction, and the cleaning nozzles 23 are also arranged on the ribs 25 facing the front and rear ends of the scraping unit 3. ing. Although the water discharge direction of the washing nozzle 23 is schematically shown by a radial line in the figure, the water discharge direction can be changed by each ball joint.

A passage 26 is provided around the opening. The passage 26 is provided with a manual cleaning nozzle 27 that can be used arbitrarily by an operator.

The floor portion 22 of the bucket washing tank 10 has a gradient such that the side facing the rear end of the scraping section 3 is lower than the front end side.
In the -A cross section, the left and right centers have a gradient that is lower than the left and right sides. A wastewater drain (not shown) is formed at the lowest position of the floor 22.

As shown in FIG. 3, the bucket washing tank 1
Numeral 0 is connected to a septic tank 31 for collecting wastewater. The septic tank 31 performs oil separation. Septic tank 31
Is connected to an oil waste system 32 and a fresh water drainage system 33.

Hereinafter, the procedure of bucket cleaning will be described.

First, the operator of the continuous unloader
The traveling frame 7 is run, the arm 1 is raised and lowered, and the turning operation is performed to move the elevator 2 onto the pier. Then, the mode is switched to the automatic operation. In the automatic operation, the horizontal relative position between the scraping unit 3 and the opening 21 of the bucket cleaning tank 10 is recognized, and the scraping unit 3 is moved over the opening 21 based on this recognition. Next, in the automatic operation, the opening 21 of the scraping unit 3 and the bucket washing tank 10, the ribs 24 and 25, and the floor 22
The horizontal / vertical relative position with respect to is recognized, and the raising / lowering operation is performed based on this recognition, and the scraping unit 3 is inserted into the opening 21.
As a result, as shown in FIG. 2, the lower portion of the scraping unit 3 is securely accommodated in the bucket cleaning space, and the bucket 4 is located at a predetermined height away from the floor 22.

Here, the operator of the continuous unloader is
Start the scraping operation. In the bucket washing tank 10, the water discharge of each washing nozzle 23 is started automatically or manually. As a result, water with a high pressure is applied to the inside, the side surface, the upper surface, and the like of the bucket 4, so that the adhered substances are removed. By the scraping operation, the buckets 4 are successively passed through the bucket washing space and washed.

The deposit on the bucket 4 is eliminated, and the arm 1
Is restored, the overload on the up-and-down cylinder 7 is eliminated, and a decrease in cargo handling efficiency is eliminated.

According to the present invention, since the bucket washing space is formed on the pier, the water discharging device can be arbitrarily arranged, and the water can be discharged from the bucket 4 in various directions so that the bucket 4 can be reliably brought into contact with the attached matter. . In addition, since water is discharged from the nozzle instead of merely spraying water, sticking deposits can be removed well. Therefore, the cleaning effect is enhanced.

Further, according to the present invention, the scraping section 3 is moved into the bucket washing space by automatic operation based on the position recognition of the sensor, so that the bucket washing space formed on the narrow jetty can be made as small as possible. .

The water accumulated in the bucket 4 during washing is
It is used for cleaning the conveyor 9 and the inside of the elevator 2 as in the conventional case. On the other hand, the water that has flowed down from the bucket 4 to the floor 22 is guided to the wastewater drain by a gradient formed in the floor 22, and is collected in the septic tank 31. Oil separation is performed in the septic tank 31, and the separated oil is sent to the oil disposal system 32. Fresh water purified by oil separation is used for fresh water drainage system 3
Sent to 3. This fresh water does not cause harbor pollution when dumped into the sea. Also, this fresh water can be used again for water discharge by a pump or the like.

[0028]

The present invention exhibits the following excellent effects.

(1) Since the bucket is washed by discharging water, the washing effect is high.

(2) Since the wastewater is collected, no port pollution occurs.

[Brief description of the drawings]

FIG. 1 is a plan view of a bucket cleaning device according to an embodiment of the present invention.

FIG. 2 is a three-view drawing of a bucket cleaning tank of the bucket cleaning device of the present invention.

FIG. 3 is a diagram of a wastewater recovery system of the bucket cleaning device of the present invention.

FIG. 4 is a configuration diagram of a continuous unloader.

[Explanation of symbols]

 Reference Signs List 1 arm 2 elevator 3 scraping unit 4 bucket 10 bucket washing tank 23 washing nozzle (water discharge tool) 31 septic tank

Claims (4)

[Claims] 1. A bucket washing space capable of accommodating a scraping portion of a continuous unloader is formed on a pier, and a water discharging device for discharging water toward a bucket is arranged in the bucket washing space. A bucket cleaning method for a continuous unloader, comprising washing a bucket by discharging water while driving. 2. The bucket cleaning method for a continuous unloader according to claim 1, wherein waste water from the bucket cleaning is collected in a purification tank. 3. When the scraping section is accommodated in the bucket cleaning space, a relative position with respect to the bucket cleaning space is recognized by a sensor provided in the scraping section, and the scraping section is recognized based on the recognition. 3. The bucket cleaning method for a continuous unloader according to claim 1, wherein the bucket is moved into the bucket cleaning space. 4. A continuous washing machine comprising a bucket washing tank capable of accommodating a scraping portion of a continuous unloader provided on a pier, and a water discharging device for discharging water toward a bucket is provided on an inner peripheral portion of the bucket washing tank. Type unloader bucket cleaning device.