JPH0411977A - Method and device for cleaning cylindrical heavy material - Google Patents

Abstract

PURPOSE:To improve efficiency of an overhead crane by inserting cleaning device fitting a rotary brush as possible to send out to a tong into inner face of a cylindrical heavy material. CONSTITUTION:A coil 21 is hung up with a coil lifter 1 and during handling it with the overhead crane, the rotary brush 10 is sent out by the suitable length with the tongue 22 at gap part between lower end face of the tongue 22 and lower end in inside diameter part of the coil 21. Then, by driving a driving device 8 for rotation, the rotary brush is rotated, and by driving a driving device 15 for shaft shifting while coming into contact with the coil 21, the rotary brush 10 is shifted to the center of coil width to clean the inner diameter part with the rotary brush 10. Further, a vacuum suction type dust catcher is arranged to the rotary brush, too to collect the dust. By this method, perfect automation can be achieved and secondary contamination can be prevented.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method and apparatus for cleaning the inner surface of a cylindrical heavy object, such as a cold-rolled coil or a packaged cold-rolled coil, which must be lifted and transported by a crane or the like.

[Conventional technology and issues to be solved]

Cylindrical heavy objects, such as the above-mentioned cold-rolled coils, that is, cold-rolled steel strip coils (hereinafter referred to as coils) during the manufacturing process or before shipping, are sent to different destinations in factories or warehouses by customer, by loft, and by delivery date. After being sorted and temporarily stored separately and adjusted for shipping by preparing for transportation, arranging vehicles, arranging shipping, etc., it is either sent to the next process from the shipping yard using an overhead crane with an electric lifter, or shipped. has been done. The above-mentioned temporarily placed coil has the outer circumference of the coil,
Dust, dust, etc. adhere to the inner diameter part and end face, causing surface defects, and when unpacking at the customer's factory, accumulated dust scatters and causes problems such as secondary contamination. Ta. Another problem was that when checking the label on which the specifications of the product are written, which is normally attached to the inner diameter part, the label cannot be read due to dust. In particular, 17 from the center of the coil.
2. A lot of dust accumulates on the inner diameter part of the bottom surface. here,
There is a lot of dust on the inner diameter part of the lower surface of 172 than the center of the coil. This is because the coil is always suspended in the same position. In order to prevent the above-mentioned situation, when sending the coil to the next process or shipping, the overhead crane should be stopped and workers in the factory should manually clean the inner and outer circumferences and end faces of the coil, such as motu or brush. The company had no choice but to wipe the area down and clean it, and then restart the crane operation. In addition, although various devices for cleaning the outer periphery and end surfaces have been studied, devices for cleaning the inner diameter have hardly been considered because it is extremely difficult to clean the inner diameter.
This has been a major obstacle in automating the storage, transportation, and shipping of coils.

[Means to solve the problem]

The present invention has been made to solve the above-mentioned problems and to effectively remove dust from the inner diameter of the coil using a device. The object of the present invention is to provide a dust removal device that can improve the efficiency of an overhead crane by eliminating the manual work involved in removing dust from the inner diameter of a coil. That is, one method of the present invention is to simultaneously clean the inner surface of a cylindrical heavy object to be lifted and transferred by a crane or the like during the transfer operation using a cleaning device equipped on a lifting tool. Therefore, a device suitable for this cleaning method has a structure in which a rotary brush (10) is attached to tongs (22) so that the rotary brush (10) can be drawn out and stored so that the inner surface of a cylindrical heavy object can be inserted through both openings. In other words, a rotating brush for cleaning the inner diameter of the coil is placed on the back side of the tongs 2) of the coil lifter (1), which is a lifting tool exclusively for the coil, and this rotating brush (10) is inserted into the inner diameter of the coil, and the width of the coil (21) is It is characterized by being able to be fed out in accordance with the movement of the coil, and by providing means for rotating a rotating brush by bringing it into contact with the inner diameter of the coil. In the device of the present invention, the coil lifter (
1) concentrically with the coil, then use the tongs (2)
2) Lower the lifter (1) until it reaches the height of the inner diameter of the coil, move the tongs (22) until it comes into contact with both end faces of the coil, and stop the coil (21) by pinching it from both end faces. The overhead crane then enters a hoisting operation and the coil (21) is hoisted via the tongs (22). Since the insertion portion of the tongue (22) is made sufficiently smaller than the inner diameter of the coil (21), a gap is created between the inner diameter of the coil (21) and the lower end surface of the tongue (22) when it is lifted. In response to an external control signal, the rotary cleaner installed on the tongs (22) descends from the back of the tongs (22) and enters the inner diameter of the tongs (22), and the brush (10) starts rotating once, causing the coil (21) to rotate. While contacting the lower part of the inner diameter and rotating to the center of the coil width, insert the tongs (22) at both ends.
sent out by the department. Such an operation is performed while the coil (21) is being transported by the overhead crane using the coil lifter (1). Furthermore, since the distance (height) between the loading surface of the tongs (22) and the operating position of the rotating brush (10) can be changed by remote control, it is effective for coils with different inner diameters.

[Effect]

With the above configuration, the coil (21)
is lifted by a coil lifter (1), and while being handled by an overhead crane, a rotary brush (1
0) is driven by the lifting drive device (4) to move the tongs (22
), the rotary brush is rotated by the driving device for one rotation (8) and is brought into contact with the coil (21), while the rotating brush ( 10), the rotating brush (1o) cleans the inner diameter portion over the entire width of the coil. Furthermore, if a vacuum suction type dust catcher is attached to the rotating brush (10) to collect dust each time cleaning is performed, the interior of the factory can be kept clean. If the above-mentioned cleanliness of the factory is not required, the rotary brush (10) may be operated in a location where the dust wiped away between the start point and the end point of transfer will not fall on other stored items. be. In addition, if the rotating axis of the rotating brush is perpendicular to the axis of the coil, the rotating directions of the two rotating brushes are opposite, and the coil is drawn outward from the center, the rotating brush can sweep out the dust. This makes it even more effective.

【Example】

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a partial view of one side of a coil lifter dedicated to lifting coils installed on an overhead crane, with the cleaning device of the present invention installed.
FIG. 2 is an exploded perspective view of the device. FIG. 3 is a schematic diagram of installing a coil lifter on an overhead crane. Since FIG. 1 shows only one side of the apparatus of the present invention, and the apparatus is substantially symmetrical on both sides, the following description will be based on one side. In the illustrated example, the tongs (22) can be moved in the direction of arrows A or B by remote control. The stop position is controlled by a coil end face detector (22b) equipped on the tongs. An elevating frame (3) is fixed to the back surface of such a tongue (22). In addition, a lifting drive device (4) consisting of an electric motor and a speed reducer, an axis movement base (5), and an axis movement device (1) consisting of an electric motor and a speed reducer.
5), a rotation base (7), a rotation drive bag N (8) consisting of an electric motor and a speed reducer are arranged in this order. Said rotary drive device! A rotating brush (10) is installed at (8) via a flexible shaft (9). The lifting screw (11) is rotatably supported at both ends by the lifting frame (3), and one end of the lifting screw (11) is connected to a lifting drive device (4) attached to the lifting frame (3) via a coupling (13). is combined with Lifting nut (12) to which the base for shaft movement (5) is fixed
is configured so that it can be moved up and down by the rotation of an elevating screw (11) via its elevating drive device in response to a command signal from a control panel (2). At this time, the axially moving base (5) is guided by the guide rod (14) and is moved vertically by the rotation of the elevating screw (11). Next, the upper end of the rotating shaft screw (6), which is rotatably supported at both ends on the shaft moving base (5), is fixed to the shaft moving base (5) with a coupling (16). It is connected to the drive device (15) and can be rotated via the shaft movement drive device (15) in response to a signal from the control panel (2), and the rotating shaft screw (6) is equipped with a screw nut (
19) are fitted together, and the screw nut (19) is fixed to the rotating shaft base (7) and is movable in the vertical direction. The rotating shaft base (7) is attached to the guide rod (14
') can be used to move up and down. Furthermore, a brush rotation drive device (8) is fixed to the rotary shaft base (7) which can be raised and lowered, and the drive bag! The flexible shaft (9) is connected to the coupling (17) in (8).
The flexible shaft (9)
A rotating brush (10) is provided at the other end via a guide (18) fixed to the shaft-moving base (5). That is, the guide (18) has the function of changing the direction of the flexible shaft (9) by 90 degrees and guiding it to the center of the coil, and has the function of guiding the flexible shaft (9) forward and backward. The rotating brush (10) is waiting by being fitted into a recess on the lower center surface of the tongue (22), and when activated, descends to the lower surface of the inner diameter. A coil end face detector (23) is attached to the lower end of the axis movement base (5). Controls the lowering position of the rotating brush. In addition, signals are transmitted and received from the control panel (2) to each drive device via well-known cable reels and cables from the cable reels coupled to each drive device. When operating the overhead crane, the coil lifter (1) lifts the coil (
21) Grab. As is well known, the tongue (22), which is the claw part of the lifter, is inserted into the inner diameter of the coil. When the coil end face detector (22b) provided on the claw portion is activated, insertion of the tongue (22) of the coil lifter (1) is stopped. Furthermore, the coil (21) enters a lifting operation by the driver's operation, and handling is started and the coil (21) is in a state of being transported to the target location. When you turn on the operation switch of the coil inner diameter cleaning machine in this state, the coil lifting device will turn on with the signal from the control panel (2).
The axis movement base (5) starts to move down by the lifting drive device (4). Coil end face detector (23
) detects the end face (lower part) of the coil, the shaft moving base (5) is lowered by a predetermined amount determined by the characteristics of the rotating brush (10) and stopped, and is moved to the cleaning operating position (first
Figure a). Then the drive device (8) for rotation of the single rotation brush (10) is activated. This rotational force spreads the thread-like mops arranged around the rotating brush by centrifugal force, wiping the inner diameter of the coil and removing dust. When the rotating brush is activated, the shaft movement drive device (15) is activated, and the rotating brush (10) held by the one-rotation shaft base (7) rotates and moves toward the center of the coil width, moving the lower part of the inner diameter of the coil. When the rotary brush (10) reaches the appropriate position to the center of the coil while cleaning and removing dust in sequence, the position detection limit switch (20a) provided on the shaft movement base (5) is activated and the rotation is stopped. The feeding of the brush (io) is stopped (it is in the position shown in Figure 1). Next, the axis movement drive device of the axis movement base (5) operates in reverse, the rotating brush (10) returns to its original state, and the position detection limit switch (20b) is activated to move the axis movement base (5) stops. Along with this, use a rotating brush (1
0) stops moving and rotating. Furthermore, the lifting drive device (4) is activated by the signal from the control panel (2).
rotates in the opposite direction to raise the shaft moving base (5), and the rotating brush is stored on the underside of the tongue (22). In this way, cleaning of the inner diameter is completed during handling of the coil (21), and the conveying coil is moved to the desired location.

【Effect of the invention】

As detailed above, according to the method and apparatus for cleaning a cylindrical heavy object of the present invention, manual wiping work is not required to remove dust attached to the inner diameter of the cylindrical heavy object. The temporary stoppage of the overhead crane associated with this can be eliminated. That is, by combining it with a conventional cleaning device for the outer periphery and end face, it is possible to mechanize the removal of dust from a heavy cylindrical object, and complete automation including the transfer of the coil can be achieved. Troubles caused by dust in the next process are reduced, and
In addition, it has become possible for consumers to prevent secondary contamination by minimizing the scattering of dust when unpacking the product, thereby improving product quality and reliability. Furthermore, the equipment cost for the inner diameter cleaner is about the same as the cost for modifying the tongs of a conventional coil lifter, so it can be installed at a low cost.

[Brief explanation of drawings]

FIG. 1 is a partial view of one side of a coil lifter equipped with the cleaning device of the present invention, and FIG. 2 is an exploded perspective view of the device. FIG. 3 is a schematic diagram of installing a coil lifter on an overhead crane. Coil Lifter Lifting Frame Rotation Drive Rotating Brush Coil (2) Control Panel (4) Lifting Drive (9) Flexible Shaft (I5) Axis Movement Drive (22) Above Figure 2

Claims (1)

[Claims] 1. A method for cleaning a cylindrical heavy object, which comprises cleaning the inner surface of a cylindrical heavy object to be lifted and transferred by a crane or the like using a cleaning device equipped on a lifting tool. 2. A cleaning device for a cylindrical heavy object, in which a rotary brush (10) is attached to the tongs (22) so that the rotary brush (10) can be fed out and stored so that the inner surface of the cylindrical heavy object can be inserted through both openings.