KR20240030670A - Container cone blasting apparatus having spray nozzle lifting structure - Google Patents

Abstract

A container cone blasting device having a spray nozzle lifting structure is disclosed. The container cone blasting device includes a fixed housing that has a penetration area penetrating in the vertical direction and is formed in the shape of a hollow pillar; a movable housing having a concave shape with its bottom open to be inserted into the penetration area to form a receiving space; a lifting unit each coupled to the fixed housing and the movable housing to raise and lower the movable housing relative to the fixed housing; and a blasting unit mounted on the upper surface of the movable housing to spray abrasive material toward a pretreatment object including a container cone positioned within the receiving space.

Description

Container cone blasting apparatus having spray nozzle lifting structure}

The present invention relates to a container cone blasting device having a spray nozzle elevation structure.

In ship construction, painting is recognized as the most important factor in determining the durability of a ship. Painting work can be divided into spraying work, which is the work of spraying paint to form a film, and pretreatment work, which is the work of cleaning the surface to prevent rust and roughing it to increase paint adhesion.

Here, the pretreatment work takes more than 80% of the total painting work and is a very difficult task that involves grinding the surface using grinding equipment such as an air grinder.

In order to promote the convenience and safety of workers performing pretreatment work, blasting devices are being developed as carriage-type equipment that can perform pretreatment work while following a continuous weld line.

These blasting devices are mainly developed for welding lines where right angles meet or welding lines where planes meet.

In the case of a container ship, as shown in FIG. 1, a container cone 70 is welded and installed on the upper surface of the double pad 80 at the bottom of the cargo hold.

When seating a container box on the cargo hold floor, the container cone 70 seats a corner fitting welded to the lower corner of the container box, preventing the container box from flowing back and forth and left and right.

The top of the container cone 70 is inclined in a roughly horn shape so that it can be easily inserted into the cast hole of the corner fitting, and a welding improvement surface for welding to the upper surface of the double pad 80 is formed at the bottom. Accordingly, the cast hole is seated on the container cone 70, so that the flow of the container box in the front, rear, left and right directions can be suppressed.

However, the conventional blasting device developed in the form of a carriage has a limitation in that it cannot be used for pretreatment work for the container cone 70, which has a protruding three-dimensional shape and is welded and installed on the upper surface of the double pad 80 at regular intervals.

The matters described in the technical background section of this invention are for understanding the background of the invention, and cannot be assumed to be prior art already known to those skilled in the art in the field to which this technology belongs.

Korea Public Utility Model No. 20-2019-0002311 (published on September 18, 2019)

The present invention is to provide a container cone blasting device having a spray nozzle elevating structure that can be effectively used for pretreatment work on container cones that have a three-dimensional shape protruding from the bottom of a cargo hold on the upper surface of a double pad and are welded and installed at regular intervals.

In the present invention, when the fixed housing is positioned so that the protruding container cone is accommodated in the receiving space, the spray nozzle mounted on the mobile housing rises or falls corresponding to the movement of the mobile housing, thereby completing the pretreatment work for the double pad and container cone. The purpose is to provide a container cone blasting device having a spray nozzle lifting structure that can be lifted.

The present invention prevents the external diffusion of dust and abrasives by allowing the dust and abrasives scattered during the blasting operation on the container cone to stay within the receiving space, and effectively complies with environmental regulations by suctioning and recovering the abrasives and dust present in the receiving space. The purpose is to provide a container cone blasting device having a corresponding spray nozzle lifting structure.

Other objects of the present invention may be easily understood through the following description.

According to one aspect of the present invention, a fixed housing is formed with a penetration area penetrating in a vertical direction and is formed in the shape of a hollow pillar; a movable housing having a concave shape with its bottom open to be inserted into the penetration area to form a receiving space; a lifting unit each coupled to the fixed housing and the movable housing to raise and lower the movable housing relative to the fixed housing; and a blasting unit mounted on the upper surface of the movable housing to spray abrasive material toward a pretreatment object including a container cone positioned within the receiving space, wherein the receiving space is defined at a side by the fixed housing, and It is formed with a limited top and sides by a movable housing, and the blasting unit includes: a sprayer body into which abrasive material supplied from an abrasive material supply unit and compressed air supplied from a compressed air supply unit are introduced; and a spray nozzle that sprays the abrasive and compressed air introduced into the sprayer body toward the pretreatment object located in the receiving space. A container cone blasting device is provided.

The lifting unit includes: a main lifting plate on which one side of the body is fixed to the upper surface of the movable housing and a guide hole is formed on the other side of the body; and a main guide bar fixed in a vertical position to be inserted through the guide hole, and a driving force supply means for supplying a driving force to raise or lower the main lifting plate along a path formed by the main guide bar, so as to be installed on the outside of the fixed housing. It may include a height adjuster fixedly mounted on the side.

The controller controls the operation of the height adjustment unit so that the movable housing is raised to a predetermined limit height while the spray nozzle sprays abrasive, and when the movable housing is raised to the limit height, the abrasive spray operation of the spray nozzle ends. It can be controlled as much as possible.

The container cone blasting device further includes a cone fitting part fixed to the lower outer surface of the fixed housing to fit and secure a container cone located outside the receiving space among the container cones welded and fixed to the double pad, wherein the cone When the container cone is fitted into the fitting, the sizes of the fixed housing, the movable housing, and the cone fitting may be determined so that the spray nozzle is positioned vertically above the container cone located within the receiving space.

The spray nozzle is coupled to the sprayer body so as to have a predetermined inclination angle, and has a nozzle structure when rotated with the coupling portion with the sprayer body as the center of rotation. It can be formed into a shape bent to face the L shape.

A suction pipe communicating with the receiving space may be formed in the body of the fixed housing so that abrasives and dust present in the receiving space are sucked out and discharged.

According to an embodiment of the present invention, the container cone has a three-dimensional shape protruding from the bottom of the cargo hold on the upper surface of the double pad and is effectively used for pretreatment of container cones that are welded and installed at regular intervals.

In addition, when the fixed housing is positioned so that the protruding container cone is accommodated within the receiving space, the spray nozzle mounted on the movable housing rises or falls corresponding to the movement of the movable housing, thereby completing the pretreatment work for the double pad and container cone. There is also.

In addition, the external diffusion of dust and abrasives is suppressed by allowing dust and abrasives scattered during the blasting operation on the container cone to stay within the receiving space, and by suctioning and recovering abrasives and dust present in the receiving space, it is possible to effectively respond to environmental regulations. There is also a possible effect.

Other aspects, features and advantages in addition to those described above will become apparent from the following drawings, claims and detailed description of the invention.

Figure 1 is a diagram showing the shape of the cone installation on the bottom of the cargo hold.
Figure 2 is an external view of a container cone blasting device according to an embodiment of the present invention.
Figure 3 is a view showing a fixed arrangement of a container cone blasting device according to an embodiment of the present invention.
4 to 6 are diagrams for explaining the operating state of a container cone blasting device according to an embodiment of the present invention.
Figure 7 is a diagram showing an abrasive collection path of a container cone blasting device according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Figure 2 is an external view of a container cone blasting device according to an embodiment of the present invention, and Figure 3 is a view showing a fixed arrangement of the container cone blasting device according to an embodiment of the present invention. Figures 4 to 6 are diagrams for explaining the operating state of the container cone blasting device according to an embodiment of the present invention, and Figure 7 is a diagram showing an abrasive collection path of the container cone blasting device according to an embodiment of the present invention. am.

Referring to FIG. 2, the container cone blasting device 100 includes a fixed housing 110, a movable housing 120, a cone fitting 140, a blasting unit, an elevating unit, and a controller 190.

Here, the blasting unit may include a spray body 132, an abrasive supply unit 134, and a spray nozzle 136 (see FIG. 4), and the lifting unit may include a height adjustment unit 150, a main lifting plate 151, and an auxiliary lifting unit. It may include a lifting plate (152a, 152b), a main guide bar (153), an auxiliary guide bar (154a, 154b), and a controller (190).

The fixed housing 110 is formed in the shape of a hollow pillar with the top and bottom open, having a penetration area that penetrates in the vertical direction, and is seated on the upper surface of the double pad 80 to position the container cone 70 in the penetration area. do. 2 and 4 illustrate the case where the fixed housing 110 and the movable housing 120 are formed in the shape of a circular pillar, but their shapes are naturally not limited thereto.

The movable housing 120 is positioned to be inserted into the penetration area of the fixed housing 110 . In order to allow the movable housing 120 to be inserted and positioned within the penetration area of the fixed housing 110, the upper inner diameter of the penetration area may be formed to be relatively large compared to the outer diameter of the movable housing 120.

In addition, the lower inner diameter of the penetration area of the fixed housing 110 may be formed to be relatively small compared to the upper inner diameter, but when the fixed housing 110 is seated on the upper surface of the double pad 80, the container cone 70 penetrates. It may be formed to be relatively large compared to the width and length of the container cone 70 so that it can be positioned within the area.

The movable housing 120 is open at the bottom, has a concave shape, and is formed in a pillar shape corresponding to the shape of the circumferential surface of the penetration area formed in the fixed housing 110, and is inserted and disposed within the penetration area of the fixed housing 110 to form the penetration area. Forms a receiving space within the penetration area by covering the open upper area of .

That is, the receiving space is defined on the side by the fixed housing 110 and the side and upper part are defined by the movable housing 120, and the receiving space is formed through the open lower space of the fixed housing 110. The container cone 70 is positioned.

The movable housing 120 may be formed to have a relatively small height compared to the fixed housing 110 (see FIG. 4), but the height relationship between the movable housing 120 and the fixed housing 110 is not limited to this. Of course.

A blasting unit is mounted on the upper surface of the movable housing 120, which is inserted into the penetration area of the fixed housing 110 and positioned to form a receiving space.

The blasting unit may include a spray body 132, an abrasive supply 134 and a spray nozzle 136 (see FIGS. 2 and 4).

The injector body 132 and the abrasive supply unit 134 may be mounted outside the movable housing 120 with the upper surface of the movable housing 120 as a boundary, and the spray nozzle 136 supplies the abrasive within the receiving space. It can be mounted inside the mobile housing 120 to spray. Of course, it goes without saying that the injector body 132 and the abrasive supply unit 134 are not limited to being mounted on the outside of the movable housing 120.

A blasting hose may be connected to the abrasive supply unit 134 to supply abrasive. The abrasive supplied through the abrasive supply unit 134 is introduced into the sprayer body 132 together with compressed air supplied from a compressed air supply unit (not shown), and a double pad located in the receiving space through the spray nozzle 136 ( 80) and is sprayed toward the container cone 70.

At this time, the injection nozzle 136 has a predetermined inclination angle so that the upper surface of the double pad 80 to which the container cone 70 is welded and the surface of the container cone 70 can be pretreated as a whole (see FIG. 6). , It is mounted on the injector body 132 as a rotary nozzle structure that rotates around the vertical axis (P in (b) of Figure 4) passing through the center point of the joint area where the injector body 132 and the injection nozzle 136 are combined. do. To this end, the sprayer body 132 may be equipped with a rotation driver (not shown) to rotate the spray nozzle 136.

In addition, the injection nozzle 136 is formed in an L-shaped bent shape and is mounted with the injection hole located at the outer end facing the direction of the center of rotation, so that the abrasive sprayed from the injection hole is directed to the polishing target located below in the direction of the center of rotation. Areas can be reached effectively and intensively.

In this way, the spray nozzle 136, which is formed in an L-shaped bent shape and is mounted to have a predetermined inclination angle, is rotated and driven with the nearby end (i.e., the end on the sprayer body side) as the center of rotation, so that the spray nozzle 136 The far end (i.e., the end relatively adjacent to the container cone 70) is rotated over a relatively large area and sprays the abrasive material, causing the double pad 80 to contact the top surface as well as the sides of the container cone 70. The abrasive can be sprayed over a wide range including (see Figure 6).

In order to easily position the spray nozzle 136 vertically above the container cone 70 to be pretreated, cone fitting parts 140a and 140b are fixedly mounted on the lower outer surface of the fixed housing 110. Here, the cone fitting portions 140a and 140b are formed to have fitting grooves corresponding to the size of the container cone 70 welded and fixed to the upper surface of the double pad 80.

A fixed housing ( Cone fitting portions 140a and 140b may be fixedly mounted on the lower portions of both sides of the outer surface of 110).

As shown in (b) of FIG. 4, the cone fitting portions 140a and 140b are inserted into one of the two container cones 70 welded and fixed to the upper surface of the double pad 80 to form the container cone blasting device 100. When the posture of ) is fixed, the fixed housing 110, the movable housing 120, and the cone fitting unit are installed so that the injection nozzle 136 has a width and length (L) located vertically above the other container cone 70. The sizes of (140a, 140b) can be determined.

Through this, by simply positioning the container cone blasting device 100 to fix any one of the container cones 70 welded and fixed in pairs to the upper surface of the double pad 80, the other one that is subject to pretreatment work The container cone 70 is positioned precisely at the pretreatment operation position (i.e., vertically below the spray nozzle 136).

In the container cone blasting device 100 according to this embodiment, the spray nozzle 136 is mounted to have a pre-specified inclination angle, so random pre-processing work for a designated area range is possible, and this allows accurate aiming at the work position. The control burden can also be eliminated.

In addition, in order to prevent environmental pollution during pretreatment using abrasives, the entire area around the spray nozzle 136 is sealed by the fixed housing 110 and the movable housing 120 that form an accommodation space, thereby suppressing the dispersion of the abrasives sprayed at high speed. As the probability of securing good work quality for the work range is improved by rotary spraying, the device, once installed, can solve the existing problem of not being able to check exactly where and how work was done in real time until the work was completed. There are also characteristics.

As described above, the spray nozzle 136 is located vertically above the container cone 70 to be pretreated, and the vertical axis (P in FIG. 5) passes through the center point of the coupling portion of the sprayer body 132 and the spray nozzle 136. ) as the center of rotation, and pretreatment work is performed by spraying abrasives toward the double pad 80 and the container cone 70.

In this process, the spray nozzle 136 is operated upward so that the entire area (i.e., from the bottom area to the top area) of the container cone 70, which is inclined to an approximate horn shape, is pretreated so that it can be well inserted into the cast hole of the corner fitting. do.

In order for the spray nozzle 136 to be operated upward, a lifting unit is provided to raise and lower the movable housing 120 on which the blasting unit is fixed relative to the fixed housing 110.

The lifting unit includes a height adjustment unit 150, a main lifting plate 151, an auxiliary lifting plate (152a, 152b), a main guide bar 153, and an auxiliary guide bar (154a, 154b).

The height adjustment unit 150 is fixedly mounted on the outer surface of the fixed housing 110, the main guide bar 153 is fixedly mounted on the body of the height adjustment unit 150 in a vertical position, and the main lifting plate 151 is installed. It is operated to rise or fall along the path formed by the main guide bar 153.

The height adjustment unit 150 includes a driving force supply means (e.g., a driving force supply means) to provide a driving force to elevate the main lifting plate 151 along the path formed by the main guide bar 153, for example, under the control of the controller 190. For example, hydraulic cylinders, pneumatic cylinders, etc.) may be included.

A guide hole through which the main guide bar 153 is inserted is formed on one side of the body of the main lifting plate 151, and the other side of the body is fixedly mounted on the upper surface of the movable housing 120. That is, the main lifting plate 151 rises or falls along the movement path formed by the main guide bar 153 by the force provided by the height adjustment unit 150, and the rising or lowering of the main lifting plate 151 Correspondingly, the movable housing 120 fixed to the main lifting plate 151 is also moved.

The main guide bar 153 is fixedly mounted on the body of the height adjustment unit 150 in a vertical position and is inserted into a guide hole formed in the main lifting plate 151 to define the movement path of the main lifting plate 151.

Two or more auxiliary lifting plates 152a and 154b are spaced apart from each other on the upper surface of the movable housing 120 so that the movable housing 120, which is moved by the driving force provided by the height adjustment unit 150, can be raised and lowered in a stable position. It can be mounted more fixedly if possible.

In order to define the lifting path of the auxiliary lifting plates 152a and 152b, the auxiliary guide bars 154a and 154b corresponding to each of the auxiliary lifting plates 152a and 152b are positioned vertically on the cone fittings 140a and 140b. It is fixedly mounted, and the corresponding auxiliary guide bars (154a, 154b) are fitted into the guide holes formed on one side of the body of the auxiliary lifting plates (152a, 152b).

In this way, the movable housing 120 is raised and lowered in response to the change in height of the main lifting plate 151, which is raised and lowered by the driving force applied by the driving force supply means of the height adjustment unit 150. At this time, the movable housing 120 is lifted and lowered in the vertical direction by the coupling relationship between the main lifting plate 151 and the main guide bar 153, the auxiliary lifting plates 152a and 152b, and the auxiliary guide bars 154a and 154b. The size of the accommodation space can be increased or decreased.

In this way, during the preprocessing process for the double pad 80 and the container cone 70, the movable housing 120 can be raised by the driving force provided by the height adjustment unit 150, and the movable housing 120 As the spray nozzle 136 rises in response to the rise, the spray nozzle 136 can perform pretreatment on the entire area of the container cone 70, which is inclined to an approximate horn shape (see FIGS. 5 to 7). ).

As shown in Figures 2 and 7, the body of the fixed housing 110 is formed by the fixed housing 110 and the movable housing 120 by preprocessing the container cone 70 and the double pad 80. A suction pipe 115 is formed to collect abrasives and dust scattered in the receiving space.

Recovery of abrasives and dust present in the receiving space can be performed even while pretreatment is in progress by spraying abrasives from the spray nozzle 136.

A suction hose (not shown) may be connected to the suction pipe 115 for recovery of abrasives and dust present in the receiving space, and may be suctioned by a vacuum pump (not shown).

At this time, if the heavy abrasives present in the receiving space are not efficiently sucked in and recovered, they may remain on the cargo hold floor after pretreatment and contaminate the cargo hold floor, or may flow into other devices and cause malfunctions.

In order to improve the suction efficiency of the abrasive, a gap for introducing external air may be formed between the circumferential surface of the penetration area of the fixed housing 110 and the body of the movable housing 120. In addition, one or more through holes for introducing external air may be additionally formed in the body area of the fixed housing 110 located on the opposite side of the suction pipe 115.

Referring again to FIG. 2, the controller 190 may control the abrasive spraying operation of the blasting unit 120, the lifting operation of the mobile housing 120 while the abrasive spraying operation by the blasting unit is performed, etc.

In addition, the controller 190 can control the abrasive spraying operation of the blasting unit to end when the height adjuster 150 is operated so that the movable housing 120 rises to a predetermined limit height, and the double pad 80 In preparation for pre-processing the other container cone 70 welded and fixed to the upper surface, the operation of the height adjuster 150 may be controlled so that the movable housing 120 descends to a predetermined initial height.

As described above, the container cone blasting device 100 according to the present embodiment is welded and installed on the upper surface of the double pad 80 at the bottom of the cargo hold to pre-process the container cones 70 that have a protruding three-dimensional shape and are arranged at regular intervals. It has features that can be effectively utilized in work.

In addition, when the fixed housing is positioned so that the protruding container cone is accommodated in the receiving space, the spray nozzle rises or lowers together with the movable housing to complete the pretreatment work on the double pad and container cone, and removes abrasives and dust present in the receiving space. It also has the characteristic of being recovered by inhalation.

Although the present invention has been described above with reference to embodiments, those skilled in the art can modify the present invention in various ways without departing from the spirit and scope of the present invention as set forth in the claims below. and that it can be changed.

70: Container Cone 80: Double Pad
100: Container cone blasting device 110: Fixed housing
115: Suction pipe 120: Mobile housing
132: sprayer body 134: abrasive supply unit
136: spray nozzle 140a, 140b: cone insertion part
150: Height adjustment unit 151: Main lifting plate
152a, 150b: Auxiliary lifting plate 153: Main guide bar
154a, 154b: Auxiliary guide bar 190: Controller

Claims (6)

A fixed housing formed into a hollow column shape with a penetration area penetrating in an upward and downward direction;
a movable housing having a concave shape with its bottom open to be inserted into the penetration area to form a receiving space;
a lifting unit each coupled to the fixed housing and the movable housing to raise and lower the movable housing relative to the fixed housing; and
A blasting unit mounted on the upper surface of the movable housing to spray abrasive material toward a pretreatment object including a container cone positioned within the receiving space,
The receiving space is formed with a side defined by the fixed housing and a top and side defined by the movable housing,
The blasting unit is,
A spray body into which the abrasive material supplied from the abrasive material supply unit and the compressed air supplied from the compressed air supply unit are introduced; and
A container cone blasting device comprising a spray nozzle that sprays the abrasive and compressed air introduced into the sprayer body toward the pretreatment object located in the receiving space. According to paragraph 1,
The lifting unit is,
a main lifting plate on which one side of the body is fixed to the upper surface of the movable housing and a guide hole is formed on the other side of the body; and
An outer surface of the fixed housing, including a main guide bar fixed in a vertical position to be inserted through the guide hole, and a driving force supply means for supplying a driving force to raise or lower the main lifting plate along a path formed by the main guide bar. A container cone blasting device comprising a height adjustment unit fixedly mounted on. According to paragraph 2,
The controller controls the operation of the height adjustment unit so that the movable housing is raised to a predetermined limit height while the spray nozzle sprays abrasive, and when the movable housing is raised to the limit height, the abrasive spray operation of the spray nozzle ends. Container cone blasting device, controlled as possible. According to paragraph 1,
It further includes a cone fitting part fixed to the lower outer surface of the fixed housing to fit and secure a container cone located outside the receiving space among the container cones welded and fixed to the double pad,
A container cone blasting device in which the sizes of the fixed housing, the movable housing, and the cone fitting are determined so that the spray nozzle is positioned at the vertical top of the container cone located in the receiving space when the container cone is fitted into the cone fitting. . According to paragraph 1,
The spray nozzle is coupled to the sprayer body to have a predetermined inclination angle, and has a nozzle structure when rotated with the coupling portion with the sprayer body as the center of rotation,
The spray nozzle is a container cone blasting device in which the spray nozzle is formed in an L-shaped bent shape so that the spray nozzle is directed toward the center of rotation. According to paragraph 1,
A container cone blasting device in which a suction pipe communicating with the receiving space is formed in the body of the fixed housing so that abrasives and dust present in the receiving space are sucked out and discharged.