JP2002028869A - Floor surface grinding/polishing/cleaning method and crossed floor surface grinding/polishing/cleaning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform successive adjustments for grinding/polishing/cleaning capability based on a numerical control for a floor surface or a crossed floor surface, to optimize a grinding/polishing/cleaning condition for a work and improve workability (grinding/ polishing/cleaning result). SOLUTION: A film thickness detection means S and a control means 80 (8) are mounted on a self-traveling type floor surface grinding/polishing/cleaning device, grinding/polishing/cleaning film thickness or residual film thickness for a coating film floor surface F is evaluated, a control output on projection amount of a grinding/ polishing/cleaning material or traveling speed is performed and a feedback control is performed. As for the grinding/polishing/cleaning method for the crossed floor surface, grinding/polishing/cleaning film thickness or residual film thickness for coating film of a line width on a two-plane crossed line is evaluated by using the self-traveling type crossed floor surface grinding/polishing/cleaning device. Two self-traveling type crossed floor surface grinding/polishing/cleaning devices are used, are formed in tandem in an advancing direction and separately arranged, and secondary grinding/polishing/ cleaning is performed for the line width including the two-plane crossed line of a floor surface and a wall surface succeeding to a primary grinding/polishing/cleaning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is equipped with a centrifugal projection type blasting means, and has a front wheel having a single wheel configuration at the center of the front portion and two drive wheels at the rear left and right. Floor cleaning method using a self-propelled floor cleaning device that cleans the floor while traveling straight, and the projection chamber of the self-propelled floor cleaning device is tilted, The present invention relates to a cross-floor surface cleaning method for cleaning a line width including a two-surface crossing line between a floor surface and a wall surface by using a self-propelled cross-floor cleaning device oriented so as to open on a two-surface crossing line. . Here, the blasting device used in the method of the present invention is a centrifugal projection type blasting machine separated into a blast head (body) and a dust collector for collecting the blasting film (dust). A closed system that recycles is used. Note that a steel grid is used as the abrasive material.

[0002]

2. Description of the Related Art A floor plate of an oil tank is welded by regularly laying rectangular steel plates and welding, and a welding line (hereinafter referred to as a welding line) is a vertical and horizontal straight line (lattice shape). I have. Hereinafter, "floor board" and "floor surface" and "side plate" and "wall surface" are used interchangeably.

[0003] By the way, at the time of periodic open inspection, it is necessary to peel off the floor of the coating film on the welding line to expose the welded portion, and a polishing apparatus to which the present invention belongs has been used. Of course, it is used not only at the time of the open inspection, but also at the time of recoating of the lining due to deterioration or life or at the time of substrate adjustment (scale removal, coating film peeling, etc.) at the time of coating restoration.

[0004] The self-propelled floor polisher is a polished body (hereinafter, referred to as a polished body).
work. ) Linearly moves along the welding line of (1), but the output of the apparatus depends on whether the coating film is completely removed or only the desired film thickness is removed (whether the coating film layer, for example, the primer layer is left). It is necessary to adjust (cleaning ability). In this case, adjustment is difficult if the coating film (film thickness) of the work is not uniform.

[0005] Under these circumstances, there have been some proposals regarding the adjustment of the cleaning ability in a conventional self-propelled floor cleaning apparatus.

For example, an apparatus for automatically controlling the projection range of the abrasive material according to the size of the work (Japanese Patent Laid-Open No. 9-29642)
), An attempt to improve the blasting efficiency by changing the projection angle of the blasting material (JP-A-6-254766).
No. 6) and an attempt to augment the blasting capability by concentrating the respective projection units of the two devices in the same blasting range (Japanese Patent Laid-Open No. 6-254).
No. 766).

[0007]

However, in any of the above-mentioned conventional examples, no control output based on the film thickness detection is performed, and the film thickness of the work is determined.
The evaluation of how much the coating film (film thickness) was left after the polishing operation was not reflected in the output of the device (the cleaning capability).

Therefore, control (adjustment) of the cleaning performance and determination of the effect of the cleaning operation depend on an experienced operator (operator).

Further, the coating film on the two-plane intersection line (corner or corner), that is, on the weld line where the fillet welding is performed, is placed on a slope, and the film thickness is not uniform. There is a problem that a film is formed, and there has been a demand to efficiently perform a localized secondary cleaning.

The present invention has been made in view of the above circumstances, and solves the above-mentioned problems. The present invention detects (evaluates) the film thickness of a workpiece immediately before and immediately after polishing while self-propelled, and outputs a control output. And by performing feedback control, perform sequential adjustment of the cleaning capability based on numerical control,
Optimization of cleaning conditions for work and workability (results of cleaning)
It is intended to provide a floor cleaning method and a cross-floor cleaning method capable of improving the floor surface.

[0011]

SUMMARY OF THE INVENTION In order to solve the problem, the present invention is equipped with a centrifugal projection type blasting means, and has a one-wheel idling front wheel at the front center and two right and left rear wheels. An improvement of a floor cleaning method using a self-propelled floor cleaning device that cleans a floor while traveling straight with driving wheels having a wheel configuration, wherein the self-propelled floor cleaning is performed. Equipped with a film thickness detecting means and a control means in the apparatus, evaluate the polished film thickness or residual film thickness on the coating film floor surface, perform a control output relating to the projection amount or running speed of the polished material, and feedback It is characterized by controlling.

Further, the projection chamber of the self-propelled floor polisher is tilted, and a self-propelled crossed floor polisher which is oriented so as to open on the intersection line between the floor and the wall is used. A cross-floor cleaning method for cleaning a line width including on a two-plane intersection line between a floor surface and a wall surface, wherein the self-propelled cross-floor cleaning apparatus includes a film thickness detecting means and a control means. And evaluates the polished film thickness or residual film thickness of the coating film having a line width on the two-plane intersection line, performs control output relating to the projection amount or running speed of the polished material, and performs feedback control. It is assumed that.

Further, in the above method for cleaning a crossed floor,
Using two self-propelled cross-floor cleaning devices, they are arranged in tandem in the direction of travel and separated from each other, and the line width including the crossing line between the floor surface and the wall surface is subjected to the secondary cleaning after the primary cleaning. There are cases. Here, by making the secondary sweep width narrower than the primary sweep width, 2
Performs localized cleaning of residual coating on the intersection line.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention, the lapping means of the self-propelled floor lapping apparatus used in the method of lapping the floor having the above-described structure is provided with a centrifugal force applied by rotation of an impeller. A projection path for the sweep material, and a recovery path for guiding the dust of the abrasive material after the projection and the abrasive film removed to the abrasive material storage hopper,
The projection path and the recovery path are joined at an open angle in a substantially V-shape to form the main skeleton of the body, and a projection chamber having the main skeleton as a housing is provided.
A pivot mechanism is provided around the skeleton so that the center of gravity of the fuselage is located above the drive wheels on the projection path side, and the load can be turned by a load balance that reduces the load on the front wheels.

The film thickness detecting means is fixedly installed at the front part and the rear part of the airframe, and detects or measures the floor height before and after the polishing, respectively, and the control means controls the difference between the respective floor heights. The thickness of the polished material or the residual film thickness is evaluated in accordance with the above formula, and the control amount relating to the projection amount or the traveling speed of the blast material is determined and reflected on the control output.

Further, in the cross-floor surface cleaning method having the above-mentioned structure, the film thickness detecting means is fixedly installed at the front part and the rear part of the body.
The floor distance, the wall distance, and the distance to the two-plane intersection line included in the line width on the two-plane intersection line before and after the cleaning are detected or measured, respectively, and the control means performs the cleaning with a difference between the respective distances. The film thickness or the residual film thickness is evaluated, and the control amount relating to the projection amount or the traveling speed of the abrasive is determined and reflected on the control output.

[0017]

(Embodiment 1) An embodiment (hereinafter, referred to as a first embodiment) of a floor cleaning method of the present invention will be described below with reference to the drawings. In each embodiment, the same reference numerals are given to common parts.

FIG. 1 is an explanatory view of the configuration of a floor polisher used in the method of the first embodiment, as viewed from a side, and FIG.

FIG. 3 is a sectional view showing the construction of the projection chamber.

FIG. 4 is an explanatory view in cross section taken along line AA in FIG.

FIG. 5 is an explanatory block diagram showing the film thickness detecting means and the polishing method.

As shown in FIG.
Is equipped with a centrifugal projection type cleaning means, and has a front wheel 11 having a single wheel configuration at the center of the front part and a driving wheel 10 having a two-wheel configuration at the rear left and right while traveling straight on the floor surface. This is a self-propelled floor surface cleaning device for cleaning F.

This cleaning apparatus A has a pair of left and right driving wheels 10 fixed near the left and right ends of a driving wheel shaft 101 which is laterally provided at the rear and driven by a traveling motor 6, and one wheel idles at the center of the front part. It has a front wheel 11 and runs straight ahead.

The blasting means includes a blasting path 31 for the blasting material to which centrifugal force is applied by the rotation of the impeller 21 and a hopper for storing the blasting material after the projection and the dust of the coating film removed by blasting. 5
And the projection path 31 and the recovery path 4 are opened and joined in a substantially V-shape to form the main frame of the fuselage, and the projection chamber 3 having the frame as a housing is constructed. I have.

The construction of the projection chamber 3 is such that the lower surface of the joint between the projection path 31 and the recovery path 4 is opened, and the periphery of the projection path 3 is surrounded by the limiting liner 32 and the skirt member 22 and closed between the floor and the floor F. It forms a typical room space.

The skeleton shape is such that the projection path 31 with respect to the installation base surface is in the range of 55 ° to 65 °, and the recovery path 4 is 40 ° to 50 °.
Projection path 31 and recovery path 4 to have a tilted orientation in the range
And open angle joining.

Here, the joint opening formed between the projection path 31 and the recovery path 4 is set in the range of 65 ° to 85 °, and the abrasive material storage hopper 5 is provided across this open angle space.

Around the skeleton, an impeller unit 2 as an attached device, an abrasive storage hopper 5, an impeller motor 1, a traveling motor 6, a traveling clutch 7, a control panel 8,
Further, the film thickness detecting means S is arranged so that the center of gravity of the fuselage is located above the driving wheels 10 on the side of the projection path 21 to reduce the load on the front wheels 11. With this load balance, a pivot mechanism that can change the direction of the body is provided.

In the polishing method, the above-mentioned polishing apparatus A is used to evaluate the film thickness or the residual film thickness of the workpiece during the polishing, and the control output relating to the projection amount or running speed of the cleaning material is obtained. And by performing feedback control,
The workpiece is cleaned under optimal conditions.

Here, the film thickness detecting means S is fixedly installed at the front part and the rear part of the machine body, and detects or measures the height of the floor F before and after the polishing, respectively. The thickness of the polished film or the remaining film thickness is evaluated based on the difference in height, and the control amount relating to the projection amount or the traveling speed of the polished material is determined and reflected on the control output.

(Embodiment 2) An embodiment of the self-propelled cross-floor surface cleaning method of the present invention (hereinafter referred to as a second embodiment) will be described below with reference to the drawings.

FIG. 6 is an explanatory view of a sectional view of a floor surface cleaning apparatus C used in the method of the second embodiment. In FIGS. 6A and 6B, the variable width liner mounting structure and the polishing width are different. (A)
The cleaning width of the illustrated device C (a) is 150 (100) wall × 150 mm floor
, (B) has a polishing width of 50 × 50 mm.

As shown, as shown in FIG.
[C (a), C (b)] has the same main configuration as the apparatus A (self-propelled floor polisher) used in the above embodiment, but is on a two-plane intersection line between the floor F and the wall W. The configuration has been changed so that line widths (corners or corners) that include.

This configuration change is achieved by inclining the projection path 21 or the output opening 201 of the impeller unit in the apparatus A used in the first embodiment and orienting it so as to open on the line of intersection between the floor F and the wall W. At the same time, the projection chamber 3 is constructed with variable limit liners 32 capable of expanding and contracting the polishing width (or projection width) from the floor surface F side and the wall surface W side of the opening.

Further, a sliding roller 30 (or an annular) for assisting running along the wall surface is provided, and the line width including the intersection of two planes is cleaned regardless of the curvature of the wall surface W. Like that. Specifically, the present invention is applied to the cleaning of a coating film on a fillet welding line of an oil tank or the like.

In the blasting method, the blasting amount of the blasting material is evaluated by evaluating the lapping film thickness or the residual film thickness of a coating film having a line width on the two-plane crossing line by using any one of the blasting apparatuses C described above. Alternatively, by performing a control output relating to the traveling speed and performing feedback control, the workpiece is cleaned under optimal conditions.

Here, the film thickness detecting means S is fixedly installed at the front part and the rear part of the airframe, and extends to the floor distance, wall distance, and the two plane intersection line included in the line width on the two plane intersection line before and after the polishing. Are respectively detected or measured.
Evaluates the polished film thickness or the residual film thickness based on the difference between the respective distances, and determines a control amount relating to the projection amount or the traveling speed of the polished material and reflects the control amount on the control output. This block explanatory diagram has the same configuration as that in the method of the first embodiment, so that the illustration is omitted.

(Embodiment 3) Another embodiment (hereinafter, referred to as a third embodiment) of the self-propelled cross-floor surface cleaning method of the present invention will be described below with reference to the drawings.

In the method of the third embodiment, two self-propelled cross-floor polishers C (a) and C (b) having different lap widths are arranged in tandem in the traveling direction and are separated from each other. In some cases, the line width including the crossing line between the floor and the wall surface is subjected to the secondary cleaning after the primary cleaning. Here, the secondary cleaning width is narrower than the primary cleaning width, so that localized cleaning of the residual coating film on the two-plane intersection line is performed.

More specifically, the device C (a) shown in FIG.
As a master machine, the vehicle is driven ahead, and the line width [sharpening width] on the two-plane intersection line is 150 (100) × 150mm, and the primary cleaning is performed.
The illustrated device C (b) shown in FIG.
Secondary cleaning is performed on a 50 x 50 mm line with a reduced line width (polishing width) on the two-plane intersection line. This is because the coating film on the fillet weld line of the oil tank is likely to remain even after the primary polishing, and a limited secondary cleaning is required. This block diagram is not shown because each of the devices C (a) and C (b) has the same configuration as that in the method of the first embodiment.

[0041]

The present invention has the above-described configuration, and has the following effects.

Since the thickness of the polished film can be set and controlled, the polished work can be performed under optimum conditions for a work having a non-uniform coating film, and a desired effect can be achieved. Moreover, it is not necessary to rely on the experience of the worker.

The polishing film thickness is numerically controlled by the set value and the measured value, so that fine control can be performed according to the work and the purpose of the work.

Since the amount of work related to the cleaning (the amount of peeling of the coating film) can be recorded as data, it is possible to perform a quantitative integrated estimation without using only the work area as a reference.

A cross-floor polisher dedicated to use as a corner machine polishes a weld line on which a fillet weld has been applied without difficulty, and performs two primary tandem and two primary polishes. As a result, work efficiency is dramatically improved.

As a whole, the workability is improved, and the work management including the estimation and the delivery date is improved by grasping the work amount (actual result) and accumulating the data, so that it is extremely useful in industry.

[Brief description of the drawings]

FIG. 1 is a side view configuration explanatory view of a device used in a first embodiment.

FIG. 2 is an explanatory diagram of the configuration as viewed from the front, similarly viewed from the traveling direction.

FIG. 3 is an explanatory cross-sectional view showing a configuration of a projection chamber.

FIG. 4 is an explanatory view in cross section taken along line AA in FIG. 3;

FIG. 5 shows a film thickness detecting means and a cleaning method (first embodiment method).
FIG.

FIG. 6 is a cross-sectional configuration explanatory view of an apparatus using the second embodiment.

[Explanation of symbols]

A Device used in the first embodiment (self-propelled floor cleaning device) C Device used in the second embodiment (self-propelled cross floor cleaning device) C (a), C (b) Device used in the third embodiment (Self-propelled cross-floor cleaning device) F Floor surface (floor plate) W Wall surface (side plate) 1 Impeller motor 2 Impeller unit 21 Impeller 3 Projection room 31 Projection path 32 Restricted liner 33 Skirt member 4 Collection path 5 Abrasive material storage Hopper 6 Running motor 7 Running clutch 8 Control panel 80 Control means 9 Grip handle 10 Drive wheel 101 Drive wheel shaft 11 Front wheel 20 Projector module 201 Output opening 30 Sliding roller (or annular) S Film thickness detecting means

Claims (7)

[Claims] A centrifugal projection type blasting means is mounted, a front wheel having a one-wheel configuration in the center of a front part and a two-wheel drive wheel on the left and right sides of a rear part are provided. In a floor cleaning method using a self-propelled floor cleaning device for cleaning a floor, the self-propelled floor cleaning device is equipped with a film thickness detecting means and a control means, and the coating floor is cleaned. A floor surface cleaning method comprising: evaluating a film thickness or a residual film thickness; performing a control output relating to a projection amount or a traveling speed of a cleaning material; and performing feedback control. 2. A centrifugal projection type blasting means is mounted, a front wheel having a one-wheel configuration in the center of the front part and a driving wheel having a two-wheel configuration on the left and right sides of the rear portion. A self-propelled floor-cleaning apparatus for cleaning a floor, wherein the cleaning means comprises: a projection path of a cleaning material imparted with centrifugal force by rotation of an impeller; It has a recovery path that guides the dust of the cleaning material and the peeled coating film to the cleaning material storage hopper, and forms a main skeleton of the fuselage by opening and joining the projection path and the recovery path in a substantially V-shape. And a projection chamber having the main skeleton as a housing, wherein the load is reduced around the skeleton such that the center of gravity of the body is positioned above the driving wheels on the projection path side to reduce the load on the front wheels. Using a self-propelled floor polisher with a pivot mechanism that can turn the aircraft by balancing A floor surface cleaning method, wherein the self-propelled floor surface cleaning device includes a film thickness detection unit and a control unit,
Evaluate the abrasive film thickness or residual film thickness on the coating film floor, perform control output related to the projection amount or running speed of the abrasive material,
In addition, a floor cleaning method in which feedback control is performed. 3. A film thickness detecting means is fixedly installed at a front part and a rear part of an airframe, and detects or measures a floor height before and after the polishing, respectively, and a control means detects a difference between the floor heights. The floor surface cleaning according to claim 1 or 2, wherein the polishing film thickness or the residual film thickness is evaluated, and a control amount relating to a projection amount or a traveling speed of the polishing material is determined and reflected on a control output. Method. 4. A floor surface mounted with a centrifugal projection type blasting means, having one front wheel that can rotate freely in the center of the front part, and two driving wheels on the left and right sides of the rear part while traveling straight. In a floor cleaning method using a self-propelled floor cleaning device for cleaning a floor, the projection chamber of the self-propelled floor cleaning device is tilted so as to be on a two-plane intersection line between a floor surface and a wall surface. A cross-floor cleaning method for cleaning a line width including a crossing line between a floor surface and a wall surface by using a self-propelled cross-floor cleaning device oriented so as to open, wherein the self-propelled Equipped with a film thickness detection means and a control means in the cross-type floor cleaning device, evaluate the polishing film thickness or the residual film thickness for the coating film having a line width on the two-plane crossing line, the projection amount of the cleaning material or A cross-floor cleaning method, wherein a control output relating to a traveling speed is output and feedback control is performed. 5. A film thickness detecting means is fixedly installed at a front part and a rear part of an airframe, and a floor distance, a wall distance, and a distance to a two-plane intersection line included in a line width on a two-plane intersection line before and after the polishing. The control means evaluates the polishing film thickness or the residual film thickness based on the difference between the respective distances, and determines the control amount relating to the projection amount or the traveling speed of the polishing material. 5. The method according to claim 4, wherein the control output is reflected on the control output. 6. The cross-floor cleaning method according to claim 4 or 5, wherein two self-propelled cross-floor cleaning apparatuses are arranged in tandem in the traveling direction and are separated from each other. A cross-floor surface cleaning method, wherein a line width including a line on a two-plane intersection line is subjected to a secondary cleaning after a primary cleaning. 7. The cross-floor surface cleaning method according to claim 6, wherein the secondary cleaning width is made narrower than the primary polishing width, so that a localized cleaning of the residual coating film on the two-plane intersection line is performed. .