KR20000008320A - Equipment for wharf surface cleaning and coating inside of bulk freighter - Google Patents

Abstract

PURPOSE: An equipment for the cleaning and coating of the hatch surface is provided to reduce the danger, cost and hour of working at the whole staging freighter hatch as well as for the installation and the separation of the staging on the upper part and the back part. CONSTITUTION: An equipment comprises:a vertical tower(28) having a base; a structure(30) movable to support the tower, and to place the towers having pairs of side walls(16,18,20) adjacent to four corners met with other parts; a vertical trolley(32) installed on the vertical tower to move vertically; a horizontal trolley(34) installed on the vertical trolley; an assistant apparatus of a supply system(36) installed onto the vertical tower for working onto the surface; an operator sidewalk(48) installed on the horizontal trolley.

Description

Interior equipment for cleaning and coating the surface of the dock in bulk cargo ships

Conventional bulk cargo ships are ships with hulls, at least in the main part of at least the intermediate body, in which the internal volume defined by the side walls and the bottom of the hull is divided into loading cargo windows (sometimes called tanks optionally). Depending on the width and length of the vessel, the cargo hold is arranged in one or more side-by-side columns extending in the longitudinal direction of the vessel, separated into longitudinal bulkheads and a plurality of longitudinally adjacent rows, separated by transverse bulkheads. In connection with the structure, the longitudinal bulkheads and the upper end of the hull sidewalls each have a walkway from the foreign body of the ship deck to the solids, and the upper ends of the transverse bulkheads have a sidewalk from the port side to the starboard of the deck. The bottom of each dock is formed from each part of the upper surface inside the bottom of each hull. The portions of the sidewalls of the individual docks are generally vertical, whether formed as ship hull sidewalls, longitudinal sidewalls, or transverse sidewalls, but may have sloped, oblique or curved regions. The dock is typically opened at the top through an area that is substantially as large as the maximum horizontal cross-sectional area of the dock. These openings are generally called hatches and are normally closed by the hatch cover during transport, storage and waiting. The hatch cover can be physically lifted from its position into the unit or can be designed to be folded, unfolded or rolled up.

Conventional bulk cargo ships have been used to transport fluid or pumpable goods without limiting the docks and without using any containers or packaged objects. However, sometimes boxes, bags, drums, containers and other packages limit the goods shipped to the dock to an amount smaller than the size of a single dock.

The bulk cargo ship may be a whole hull of a single hull, a whole hull of a double hull, or a partially double hull (eg a double bottom) and the remaining single hull.

Each side wall is typically made of steel plates at the bottom and top of the bulk cargo dock, and the intersections and edges are welded.

The inner wall of the bulk cargo hold is subject to at least the same tensional environmental conditions as the outer surface of the ship hull. In fact, environmental tension factors due to the reactivity and corrosiveness and limited space of some bulk materials (eg rock salt) to be transported can cause surface degradation at a greater rate than would be experienced outside of the ship hull. Therefore, in order to extend the economic life of the cargo ship and make good repairs, the inner surface of each bulk cargo hold should be best cleaned and coated when the ship is new, and then periodically rewashed and recoated.

When building a new bulk cargo ship, it is possible to clean and coat at least some parts of the plate which will form each part of the hull and the dock before welding with the metal plates provided on each wall, and then weld after welding It is possible to simply clean or rewash and coat or recoat the area of the seam. If the coating provided is a reactive (eg, "epoxy") coating in a dipping, rolling, or spraying manner, it is a particularly aggressive style operation.

In many cases, however, dock wall surfaces, such as ship hull exterior surfaces of new ships that have been built, are cleaned and coated as a whole after cutting, welding, bolting and installing at least some fittings.

In the latter case of this new construction and in both ship repair and refurbishment, the provisional or alternatively movable movables in the docks can be supplemented or alternatively replaced by the use of movable "cherry picker" type operator-lifts which temporarily descend below the docks. The general practice of cleaning and coating the dock walls using staging has been done so far (where the term sidewall refers to the side walls provided on the hull surface, longitudinal bulkheads, transverse bulkheads, the top side of the hull bottom) and The bottom of the hatch cover).

Surface cleaning generally involves forcing particles of grit to collide against the surface to be cleaned. In some cases, the particles are simply sprayed by a jet of compressed air that is ejected through a hose from a nozzle towards the work surface by a human operator wearing protective clothing and breathing equipment. In other cases, a similarly worn operator is directed directly to the work surface using compressed air or gravity-feeding centrifugal impeller outlet openings.

When the abrasive grit collides towards the surface to be cleaned, it is most susceptible to attacks such as shells, rust, solid lump residues from previous cargoes, and residues from previously-coated coatings, affected by the post-coating environment. Polish anything Continue to work in the localized area of the surface, then continue to the next or next area of the surface, until substantially all of the “bad” is removed, but substantially “good” during abrasive spraying. It is the responsibility of the operator.

Therefore, the grit used includes not only the material applied to the surface which is affected by the impact, but also the material which is all mixed together and removed. In some cases, the work head includes abrasive grit recovery mechanisms, such as an underlying collector or funnel and suction line, so that abrasive spraying is performed as the operator moves. In other cases, the grit used simply falls to the floor, ie on the top surface of the bottom wall, predominantly on the staging and upward facing surfaces of the equipment, and is swept by the operator's work with the help of the sprayer, Disappeared or collected.

In some cases, the grit is made of sharply ground particles of refractory material such as carborundum, or agate; In other cases, bits are made of sharp pieces of ferromagnetic material, including steel balls. In this case, it is possible to separate the used grit ferromagnetic material from debris of coatings and other debris using magnets and electromagnet collectors or separators.

The grit used can be sorted and the various fragments can be divided into donation, disposal and reuse procedures.

After washing, the coating is typically applied by spraying. In general, this is done by non-experts and is called "painting" in so-called everyday terms.

Current trends in coatings include vehicles or vehicles that enable and facilitate application, spraying, and painting, but their contribution to the process is not yet complete, leaving the minimum amount of volatile organic compounds in the air. It is necessary to get out, thus be included, reduced, thinned, or otherwise handled.

During the cleaning and painting operations, the general staging used in the docks to support the operator is typically a general scaffold, which includes many modular parts of the framework and thick planks. It is convenient to use such staging because, in one sense, a set of components can be assembled and assembled into many different structures in order to be able to work on the same dock in different lengths, widths, heights and physical structures. However, time is spent on installation and dismantling, and when the worker climbs to the footrest and the unloading section, the faulty thick board results in unfortunate consequences of accidents or damage. And, each movement of the worker and each installation and release often involves climbing onto the board while moving heavy equipment. Spraying and coating equipment needs to be separated from the assembly, including compressed air, liquid delivery hoses, and electrical cables.

The present invention overcomes the drawbacks and disadvantages that are likely to occur as follows while maintaining the functionality of the apparatus and method for cleaning and coating the inner surface of conventional bulk cargo ship docks.

Safety risks, costs and time of the operator of the entire staging cargo dock, including installation and removal of staging from the top and sides;

Worker's safety risks, costs and time during which the coating worker must climb on staging while moving the coating equipment to reach the surface to be coated;

Cost, time to install and connect washing and coating equipment, including hoses and electrical cables; And

In some cases, the costs of acquiring, handling, and discarding mineral abrasives, while providing methods and systems that are suitable for fabrication and use and that are readily suited for use in docks having a wide range of sizes and shapes.

On bulk cargo ships, the built-in device for surface cleaning and coating maintenance contains four main components: a vertical tower that can move horizontally (for example, allowing the device to move to the four corners of a lowered dock). With a movable beam), a vertical trolley to allow the operator to climb with all their equipment in the dock, a horizontal trolley to allow the operator to obtain optimal access to the surface of the wall, and cleaning and coating support equipment, and It includes a system. For reference, the device may be placed into and out of the cargo hold, or at the maximum of two parts, the base part (which is a vertical tower, movable beam, all necessary systems for cleaning and coating, operator air supply and power, as well as distribution system). The upper portion of the upper portion of the upper vertical tower of various heights, vertical trolleys, various extended horizontal trolleys, vertical trolley hoist mechanisms, horizontal trolley extension mechanisms, and top of the distribution system. It can be lifted together to the maximum of the two parts, including, with). The upper portion is accumulator on the base. The sidewalks on the horizontal trolley extend on all four sides, allowing for work from at least two sides simultaneously for each of the four parts of the base on the bottom of the dock. For cleaning and coating, abrasive spraying equipment and automatic coating spraying equipment are provided for moving horizontally along each of the four sides of a horizontal trolley (eg on a safety rail).

The principles of the present invention are described below with reference to the drawings showing preferred embodiments. The drawings shown in the specification are illustrative and are not limited to the invention defined in the claims.

1 is a front view of a cleaning and painting interior device for a bulk cargo ship dock surface, showing a device supported on a dock having a vertical trolley approximately half raised and a horizontal trolley that extends maximally towards the sidewall of the hull;

2 is a top plan schematic view of the structure shown in FIG. 1;

3 is a top plan schematic view similar to FIG. 2 but showing a horizontal trolley concentrated;

4 is a side view of a device showing the provision of a first embodiment of a ventilator;

5 is a front view of the first embodiment;

6 is a front view of an application in which the ventilation system is raised and rotatably provided;

7 is a top plan view of a device provided with the ventilation system of FIG. 6;

8 is a perspective view of a device showing that an automatic spraying machine for cleaning has been provided, showing that the horizontal trolley on the upper side is fully advanced to the right;

9 is a side view showing that the device of FIG. 8 is supported on the dock;

FIG. 10 is a view similar to FIG. 8 but showing an apparatus equipped with an automatic coating-coating machine;

FIG. 11 is an enlarged perspective view of a portion of the apparatus of FIG. 10 in an enlarged scale; FIG. And

FIG. 12 is a side view similar to FIG. 9 but with an automatic coating-spraying machine as in FIGS. 10 and 11.

In the figure, a bulk cargo ship 10 is shown schematically and in part including a wall forming a dock 12. In the case shown, the deck 14 (bottom wall) of the dock is provided by the bottom of the hull (which may be an inner hull), and in the case of a double-bottom hull, one sidewall 16 is a ship hull. Is provided by the ship hull on the opposite side, and is also provided by the longitudinal bulkheads, and another set of two mutually opposite sidewalls 20 is provided with two consecutive transverse The bulkhead is provided, and the top wall 22 is provided by a removable and deployable hatch cover or a hatch cover set for the dock. These walls 14-22, which provide the inner surface of the dock 12, are cleaned and coated.

The built-in device 26 for cleaning and coating the hull surface 24 is small enough in the horizontal cross-sectional outline so that it descends in through the smallest hatch and is raised out of the dock of at least the accommodating ship where it is expected to be used, but the horizontal cross-sectional outline It is preferably large and expandable in that an operator can work from there and reach all internal sidewall surfaces of the dock without four movements of the device (ie into the four corners of the dock). In other words, its width (including extensibility) is preferably somewhat larger than half the dimension of the port to starboard of the widest dock to be used, and its depth (including extensibility) is the longest to be used. It is preferably somewhat larger than half the longitudinal dimension of the holds (from the foreign body to the solids of the ship). The height (including the change in top portion) is large enough to allow the operator to reach the upper extension of the sidewall and to clean and coat the hatch cover or the bottom of the hatch covers, but if required, cleaning and coating operations In order to limit the space within this range, the hatch cover is short enough to allow the hatch cover to be closed during the cleaning and coating process to facilitate air quality management.

The device 25 is a vertical column 28 having four main components, ie a movable beam or powered carriage 30 at its base, supported on the vertical column and raised to any desired height on the vertical column, The lowering, stationary vertical trolley 32, which is supported on the vertical trolley and concentrated and raised in both directions (usually the maximum port at the maximum starboard, if lowered towards the dock at about 90 degrees relative to the orientation shown on the vertical line) Nevertheless, instead it includes a horizontal trolley 34 which enables the movement of the horizontal trolley towards the maximum forward and maximum solids, and cleaning, coating, worker breathing air, and a power supply and support system 36.

The vertical column 28 is preferably made of steel structure that is tightened, welded, or otherwise connected by two or more modular bolts as possible to be loaded (to work in docks of varying heights). Side structure.

The vertical column is preferably rectangular, for example, a planar and ascending structure of 13-19 meters high, 8-12 meters wide and 3 meters deep (from doubling to solids). In feet, these preferred sizes are 40-60 feet high, 25-35 feet wide and 10 feet deep.

The vertical column is supported at its base, i.e., the bottom of the tower is horizontal to the tower (and thus the entire device 26) in at least two mutually perpendicular directions (fold width and length direction of the ship). Provided by a structure that allows movement. In a preferred embodiment, these structures are conventional movable beams 30.

It is also common to supply electrical distribution systems, abrasive grit feed reservoirs and recycling systems, abrasive spray and coating feeders, paint-mixing stations, air compressors, and distribution pipes for compressed air, breathing air, abrasive grit, and paints; The entire aid of the support system 36 is mounted to the vertical tower 28 at or near the base of the vertical tower 28 (ie on the lower part, if the tower is provided as a loadable module). Power supply cables and distribution pipes extending from the supply and support system 36 require equipment in the vicinity of the device 26. In the case where the tower consists of module parts, the supply cable and the distribution pipe preferably comprise connecting members which are easily assembled and separated at the connection of the modules. The module makes it easy to vertically assemble and separate the mechanical connectors for each tower frame component (e.g., additional taping pins and flaring soket). By loading, it is easy for loading, unloading and raising and lowering by the crane. When the vertical trolley is raised relatively high and the horizontal trolley is extended relatively extremely, the framework components of each tower of the loading module are brought together to provide increased certainty for partial detachment and tilting of the upper module. Fixing may be provided and heavy workers and equipment are supported on horizontal trolleys relatively away from the vertical column.

If the vertical column 28 is provided as a loading module, it is presently preferred that the device 26 as a whole be provided in two parts. That is, the lower portion 38 includes the base module of the vertical column 28 including the movable beam 30, the supply and support system 36, and the lower portion of the electrical cables and pipes, and the upper portion 40. The upper module (or middle and upper module) of the vertical column 28, the vertical trolley 32, the hoist mechanism 42 for the vertical trolley 32, the horizontal trolley 34, the extension-retraction mechanism 36 for the horizontal trolley ), And an upper portion of the electrical cable and pipe.

For reference, the electrical distribution cable and grit, air and coating tubing take-off (ie, easily disconnected and disconnected) through the interior of vertical column 28 and over its top. And extend from the base at periodic intervals, such as 2.5 meters each (8 feet each, in feet).

For reference, the two ladders extend up to the highest height of the vertical tower and are provided on the side of the tower framed solids (shown only schematically in the figure) on the side to the foreign body, and are secured around the surroundings of the user's moving uphill. Complete the wire mesh device.

In some cases, the horizontal trolley is configured to be assembled and supported so as to be stable and freely positioned, even in the maximum position and where the load is loaded.

The vertical trolley 32 likewise has a rectangular parallelepiped made of a high strength steel member made of bolts and / or welding or other connection methods, with roller elements arranged to roll each of the vertical elements of the vertical column 28 in a rolling manner. The frame structure is preferred. The vertical trolley can be lowered to the raised portion of the upper end of the vertical column and needs to be raised. The hoist mechanism 42 may be co-located with the supply and support system 36 on the base of the lower portion 38 or may be supported and fitted on the top of the vertical column 28.

The rollers 32 of the vertical trolleys have inner rollers and outer rollers at all four corners of the tower to accommodate the forces from foreign bodies to solids and from port to starboard as they move around the device and people. And a top and bottom set, the movable beam or powered carriage 30, the hoist 42 and the hoist extend-retract system 44 are activated.

The choice of subsystems of the device 26 operating using compressed air, possibly hydraulic or electric, can vary depending on local preferences, needs and availability. For example, a winch motor for a cable supporting a vertical trolley from the hoist mechanism can be an electric motor, an air operated motor or a hydraulic motor.

The horizontal trolley 34 is likewise preferably a rectangular frame structure made of steel elements of high strength structure. It may be adapted to a suitable extension-retract system 44 (which includes racks and gears; chains and sprockets; extension-retractable cylinders actuated hydraulically or by compressed air, etc. Supported by a vertical trolley for bidirectional rolling or sliding movement between the neutral position and two opposing pole positions, by means of suitable means (such as a vertical trolley) to lock the trolley at any given position regardless of failure. .

As seen above, the horizontal trolley 34 preferably comprises sidewalks 48 made of tensioning wire mesh nets or open gratings for decking, the sidewalks for all four sides of the outer periphery of the horizontal trolley. Extend. The sidewalk 34 is surrounded by a safety rail 50 which stands up.

The metal skeletal elements of the device 26 need not all be shaped like steel alloys. For example, while the other parts are made of low-cost alloys, the horizontal trolleys are located close to where they are most abrasion-prone when in use, thus providing higher yielding with more resistance to provide lightness and durability. The whole or part is made of high yield steel.

In use, the dock 12 is easily released, cleared, and emptied of debris. It is first washed using a high pressure hose for cleaning, and the used water is pumped out.

The device 26 is lowered to the dock so as to be supported by a movable beam or powered vehicle 30 of the deck 14 of the dock. If the crane operator and the crane supervisor are particularly skilled at the dock, the initial placement of the device 26 may be one of the four corners of the dock, corresponding to the initial use position.

If the device 26 is lifted into a dock in a part made by loading and locking (eg assembled into another one), each of the various connectors of the part of the electrical cable and the supply / support pipe is connected to the other, The facility is provided to the system 36 by each line connected there and extending out from the hatch. When the illumination provided at a convenient location on the tower 28 is turned on, and the human operator estimates their position and connects their breathing apparatus, the hatch cover is given (inlet and outlet of the electrical and fluid supply lines and from the system 36 To the extent possible. If necessary, the movable beam 30 is activated to adjust the relative position of the device 26 to the first edge of the dock. Spray cleaning of the two sidewalls that meet each corner of the dock begins. Before and after the same or different operator operates from the facility provided by the device 26, the spray cleans the quadrant of the deck 14, if desired, the lower quadrant of the lower hatch cover. In the course of this operation, in order to get closer and perform, i.e. more or less than one quarter of the cleaning operations, the operator (the operator extends / retracts the horizontal trolley and moves up or down from the bottom up or down) Lower or raise the vertical trolley 34). The operator or operators generally work on both sidewalls that meet at each corner. At the end of this cleaning, the device 26 is moved to each of the other three corners using a horizontal positioning device (moving beam 30), and after each movement, the cleaning is done as described above.

After the abrasive used has been cleaned and the air quality / temperature / humidity has been adjusted, if necessary, many of the same or different operators again spray coat the surface 24 using a trolley increase with respect to the increase of the four corners, From a location on the sidewalk as described above in connection with the cleaning. When completed and determined, once the release of volatile organic chemicals has been sufficiently made and reduced due to air quality control, the hatch cover is opened and the dock is separated out from the various cables and feed lines and supply and support system 36. The device 26 is lifted out of the dock 10 (as a whole or in sequence, eg two parts if modular), lowered to another dock, and the next cleaning and coating operation on this other dock. Prepare.

Particularly in the case of long or wide docks, the device as a whole is carried out in four positions (eg six or eight positions, eg For example, one intermediate position on each of the two or four sides).

The device 26 can be used to perform something other than spray cleaning or coating, such as high pressure cleaning or checking. Also, for example, only one task involving the special dock using the device 26 may be performed, such as in special cases such as when no cleaning is done.

It is also possible to fit one or more horizontal extensions into the horizontal trolley to equip the operator with the device 26, in particular to use it to reach away from the vertical column 28.

4 and 5 and 6 and 7, the device 26 is shown with a ventilation system, respectively, with modifications of the ventilation system.

Referring first to FIGS. 4 and 5, the ventilation system 52 supported from the vertical column 28 and powered by the supply and support system 36 is a dust filter (not shown) for intake air. A vertical conduit provided with an air inlet 56 protected from above by a domed cap 58 enclosing the top and positioned at an upper end of the tower 28, which is located higher than the tower 28, which is the first case. 54). If the dust filter is consumable or washable elsewhere, it is removable for cleaning and removable for replacement, or washable in place.

It is shown that the conduit 54 is provided at the lower end with the air outlet 60, which is also covered with a net to prevent large objects from entering or exiting the air outlet. The air outlet 60 is preferably located near or above the base of the vertical column 28, for example to be out of the path of the supply and support system 36.

Between air inlet 56 and outlet 60, ventilated air is discharged into conduit 54, filtered by filter 58, and operated by motor 64 to exit out of outlet 60 and conduit 54. ), There is a fan 62 fitted.

The motor 64 is powered from the supply and support system 36.

Although the operator has no choice but to rely on the ventilation system 52 to supply air from the outside of the dock (eg hatch cover opening), at least the worker in the dock is provided with a ventilator, breathing mask if abrasive spraying and spray coating take place. Alternatively, it is recommended to use another air supply or filter device. Ventilation system 52 helps prevent dense dust in the air from making the operator's visibility too low, helps to dry and protect the sprayed coating, and helps to have a good influence on the temperature and humidity in the dock. . 6 and 7, the dome cap 58 is shown in relation to FIGS. 4 and 5 except that the domed cap 58 is mounted on the pivotable extension 66 of the conduit 54. And as described. The extension 66 has a suction port 56 positioned over the hatch of the dock 12, and the offset of the side provided by the pivotable extension allows the conduit provided by it to extend out of the dock and into the hatch area. To avoid being confined and disturbed. Possible movement of the pivotable extension and the resulting envelope are shown in FIG. 7.

Automatic job feeder controllable from the workroom, which can be located either outside or inside the dock, during cleaning or coating, when in situations of deterioration of the working environment, or due to local requirements or regulations, or lack of operators. It is preferred to carry out at least some washing and / or coating operations using a.

Apparatus for performing automatic cleaning and painting will be described with reference to FIGS. 8 to 12.

8-12, a set of horizontal rails 68 is mounted on a horizontal trolley 34, safety rail 50, for example, to extend completely from corner to corner along each side. In practice, four sets of such rails 68 are preferably provided, one on each side of the horizontal trolley. The rails for each side can be each part of the rail system that extends around each corner, and the automatic work feeder can move around the corner from one side to the other, four compartments as shown in the set Set rails may be provided. As a less preferred alternative, only one or two sets of rails may be provided. In this case, each set is made to be easily mounted and detached from the horizontal platform (which can be done with the aid of a crane or by the operator while the vertical trolley 32 is placed at its lowest position). In the latter case the cost can be saved in equipment investment but the cost is increased in time and labor for moving the rail set or sets from side to side of the horizontal trolley. Preferably, each side is provided with a set of rails as shown at 68.

8 and 9, the device 26 shows a structure for automatic spraying by having an automatic spraying machine 70 mounted on a rail 68. In practice, during the cleaning operation, both automatic operation machines are equipped with at least two sides facing the dock surface 24 that meet the edges (one spraying machine 70 is provided for cleaning on both sides of the hull). So that the rails are curved around each corner so that if one isn't enough).

Each injector 70 is an impeller or injector 72 for ejecting an abrasive grit (such as a steel shot) through an outwardly facing housing opening positioned opposite the dock surface 24. Pull the feeder and the rails 68 (such as a motorized cog-wheel engaged with a rack gear or motorized rubber wheels or rails with a set of wheels towed to the rail, provided on the rails) And a mechanism 74 to be pushed or pushed. The motor may be pressurized fluid power, or electric power, and has facilities provided through cables (not shown) from the underlying supply and support system 36.

In this embodiment, the abrasive used is a steel shot, and the used abrasive falls to the bottom of the housing of the feeder 72 with the discharge of debris, where it is collected by a return line and the regeneration station 36 (which is Sent to the base or outside the dock). In the regeneration station, for example, separation of the reusable grit, which is returned to the supply and support system 36 to be reused by the injection mechanism, is carried out on which the mixed material is carried out on the basis of dust size or dust-like ferromagnetic material. .

Long distance operation of the abrasive supply, traversing the abrasive feeder along the rail, raising and lowering the vertical trolley, pushing and retracting the horizontal elevator, and moving the device 26 along the deck of the dock, eg by means of a cable Standard techniques are used, using panels or by radio transmit / receive pairs to supply and support system 36.

If it is not easy to redirect the feeder 72 to reach its surface automatically, cleaning the deck and directing the top surface down as described above in connection with the embodiment of FIGS. It can be performed by a manual mechanism actuated by.

At the end of the cleaning (for the dock, both washing and coating), either one of the feeders 72 each goes to the outer end of each set rail 68 and stops or physically moves out of the path.

For coating, the subsequent cleaning, or if no cleaning is required or otherwise already performed, the coating machine 76 is mounted on a rail set (multiple on each of two or multiple rail sets).

Such a coating machine includes a feeder 78 (eg, an injection head connected to supply and support system 36 and rail crossing mechanism 80 by supply hoses (not shown)).

In both the cleaning and coating cases, each feeder is adapted to traverse each side of the horizontal trolley while being fed from the system 36, the trolley 36 feeding the feeder to a new increment for the work being fed. Is operated to position, the horizontal trolley is operated so that it is farther away from the corner than can be reached at a corner or a predetermined position of the device 26, and the device 26 is located at each of the four corners of the dock. It is repositioned using the power circuit 30 to position the device 26 as a whole in successive relationship.

A more detailed description of how to load or unload a top module can be understood with reference to the detailed description of FIGS. 21-26 of US Pat. No. 5,398,632 by Goldbach et al., Issued March 21, 1995. will be. The device for pushing and retracting the horizontal trolley may be similar to the description for pushing and retracting the working platform with reference to FIGS. 29-32 of the patent. The cleaning and coating machine is similar to that described with reference to FIGS. 33-41 and 49 of the patent. The vertical trolley is similar to that described in connection with FIGS. 7 and 8 of the patent, and the supply and installation system is similar to that described in connection with FIGS. 17 and 18 of the patent. Machines for collecting used grit, fractioning and reuse are described in US Pat. No. 5,353,729 to Goldbach et al., Published October 11, 1994, and US Pat. No. 5,540,172 to Goldbach et al. 30 July 1996. It may be performed as disclosed in. The device is moved by the device 30 in a manner similar to the motion of the instrument described in the latter US patent.

It is evident that the built-in apparatus for cleaning and coating the dock surface in a bulk cargo ship as described above proceeds with each of the properties set forth in the specification under "Objective of Invention". As described and outlined in the foregoing specification, the invention should be understood to encompass all such modifications within the spirit and scope of the following claims as they may be modified to some extent without departing from its basic principles.

Safety risks, costs and time of the operator of the entire staging cargo dock, including installation and removal of staging from the top and sides;

Worker's safety risks, costs and time during which the coating worker must climb on staging while moving the coating equipment to reach the surface to be coated;

Cost, time to install and connect washing and coating equipment, including hoses and electrical cables; And

In some cases, the cost of acquisition, handling and disposal of mineral abrasives can be reduced, while providing methods and systems that are suitable for fabrication and use and that are easily adapted for use in docks having a wide range of sizes and shapes. .

Claims (19)

In the interior device used to work on the inner wall of the bulk cargo ship dock, A structure providing a vertical tower 28 having a base; Substantially horizontal of the dock 12 for positioning the tower which is movable to support the tower and proximate each of the four corners where each pair of sidewalls 16, 18, 20 of the dock meets another. A movable support structure (30) arranged to move the tower relative to two mutually orthogonal horizontal directions on the in deck (14) and supporting the tower base; A vertical trolley 32 mounted on the vertical column 28 and movable vertically for holding and guessing a plurality of selected vertical rises, respectively; Mounted on the vertical trolley and movable horizontally in both directions on vertical column 28 to infer and maintain a plurality of respective selected horizontal positions associated with the vertical column, extending in one direction to one side of the vertical column. A horizontal trolley (34) comprising a first pole position and a second pole position extending to an opposite side of the vertical column; An auxiliary mechanism of the supply system 36 provided on the vertical column for performing work on the surface; And And an operator guide (48) provided on said horizontal trolley (34). The method of claim 1, The vertical column 28 is modular, includes at least one lower module and an upper module that are stackable and detachably connected, and The device comprising two parts (38, 40) comprising one of the lower module, the base and the system and the other of the upper module and the vertical and horizontal trolleys. The method according to claim 1 or 2, Built-in device, characterized in that the movable support structure is constituted by a movable beam (30). The method according to claim 1, 2 or 3, The auxiliary mechanism of the supply system 30 And an apparatus (52) for providing breathing air to the operator or operators. The method according to any one of claims 1 to 4, The auxiliary mechanism of the supply system And an apparatus (70) for supplying an abrasive grit spraying mechanism. The method according to any one of claims 1 to 5, The auxiliary device of the supply device And an apparatus (76) for supplying a coating spray mechanism. The method according to any one of claims 1 to 6, The horizontal trolley (34) is generally rectangular in plane, and the operator guidance extends to all four sides of the outer periphery of the horizontal trolley (34). The method according to any one of claims 1 to 7, An air inlet port 54 provided at an upper end of the vertical tower and an air outlet port 60 provided at a lower end thereof and supported by the vertical tower 18; A filter connected with the vent for filtering the air discharged to the vent; And And a fan (62) sandwiched in the vent for discharging air through the inlet to the vent and for discharging to the dock through the vent. The method of claim 8, To position the intake in any one of a plurality of laterally offset positions within the envelope in a circular manner of movement and position, the vents including an upper end extending over the vertical column and offset laterally about a vertical axis. Built-in device characterized by. A method for working on the inner wall surface of a bulk cargo ship dock, (A) The built-in device A structure providing a vertical tower 28 having a base; On the substantially horizontal deck 14 of the dock 12 for positioning the tower which is movable to support the tower and proximate each of the four corners where the side walls of each pair of docks meet with another. A movable support structure (30) arranged to move the tower (28) with respect to two mutually orthogonal horizontal directions and supporting the tower base; Vertical trolleys 32 mounted on the vertical column 28 and movable vertically, respectively, for holding and guessing a plurality of selected vertical rises; Mounted on the vertical trolley and movable horizontally in both directions on vertical column 28 to infer and maintain a plurality of respective selected horizontal positions associated with the vertical column, extending in one direction to one side of the vertical column. A horizontal trolley (34) comprising a first pole position and a second pole position extending to an opposite side of the vertical column; An auxiliary mechanism of the supply system 36 provided on the vertical column for performing work on the surface; And Lowering the dock to be supported on the deck of the dock, including operator guidance (48) provided on the horizontal trolley (34); (B) From the sidewalk 48, the apparatus is located in a first position on the deck while working inside the two sidewalls of the dock that meet the first edge and uses the feed supplied from the system. Making; (C) operating the movable support structure (30) to move the device to a second position on the deck; (D) From the sidewalk, the device is located at the second position on the deck, while at the same time working on the inner surfaces of the two side walls 16, 18, 20 of the dock which meet the second edge and supplying from the system at all times. Using the prepared feed; And (E) lifting the device out of the dock. The method of claim 10, Repeat steps (C) and (D) two or more times, and before moving to step (E), move the device to the third and fourth positions, respectively, and And (bar) working on the inner surface (24) of the side walls (16, 18, 20). The method of claim 11, Said operation comprises at least one of coating and cleaning said surface. The method of claim 12, Performing (a) to (d) and (f) twice in succession, followed by washing and coating before performing (e). The method of claim 13, Wherein said coating comprises spraying an abrasive grit and spraying a coating. The method of claim 7, wherein At least one side of the outer periphery of the horizontal trolley is provided with each set of horizontal rails 68 extending along each side; A remotely operable work feed machine 70 mounted on the set of rails and arranged to motor propel along the set of rails while applying work to the surface and comprising one of an abrasive grit feeder 70 and a coating injector 76, Built-in device comprising a). The method of claim 15, A set of rails (68) is provided on each side of said outer periphery of said horizontal trolley (34). The method of claim 15, Wherein at least one of the working feeders is an abrasive grit feeder 70 suitable for collecting centrifugally propelled steel and rebound shots and for loading material into a housing for sorting and reusing at least some of the steel shots. Device. A device for working on the inner walls of bulk cargo ship docks, A vertical tower 28 having a base; Movable support structure 30 that is movable to support the tower and arranged to move the tower about two mutually orthogonal horizontal directions on a substantially horizontal deck 14 of the dock 12, respectively. ; A vertical trolley 32 mounted on the vertical column 28 and movable vertically for holding and guessing a plurality of selected vertical rises, respectively; Mounted on the vertical trolley and movable horizontally in both directions on vertical column 28 to infer and maintain a plurality of respective selected horizontal positions associated with the vertical column, extending in one direction to one side of the vertical column. A horizontal trolley (34) comprising a first pole position and a second pole position extending to an opposite side of the vertical column; And An auxiliary device of the supply system (36) provided on the riser and for performing work on the face. The method of claim 18, The horizontal trolley is generally rectangular flat; A plurality of horizontal rails extending along each side on at least one side of the outer periphery of the horizontal trolley; And the device comprises a work feed machine remotely operable mounted on the rail or rails and arranged for motorized propulsion along a rail while working on the surface.