KR20240014702A - Cone blasting apparatus - Google Patents

Abstract

A cone blasting device is disclosed. The cone blasting device includes a housing having a shape in which the sides are closed on all sides and the upper and lower surfaces are hollow and open so as to form an internal space in which to place the cone to be pretreated; a blasting unit positioned in the interior space of the housing to spray abrasive material at the cone; and a transfer unit that is fixed using an edge of the open upper surface of the housing to support the blasting unit at the top, and transfers the blasting unit in a first direction and a second direction perpendicular to the first direction.

Description

Cone blasting apparatus {Cone blasting apparatus}

The present invention relates to a cone blasting device.

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, a blasting device as illustrated in FIG. 1 has been developed.

As shown in FIG. 1, the blasting device includes a main body 10 including a rectangular frame 11, a blasting unit 20 attached to the main body 10 to spray abrasives on the outer surface of the object, and It is configured to include a moving part 30 that is mounted on the frame 11 of the main body 10 and moves the main body 10.

The blasting device is a carriage-type equipment that can perform pretreatment work by following a continuous weld line. It is mainly developed for weld lines where right angles meet or weld lines where planes meet.

In the case of a container ship, as shown in Figure 2 (a), a cone 70 is welded and installed on the upper surface of the double pad 60 on the bottom of the cargo hold.

When seating a container box on the cargo hold floor, the 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.

As shown in (b) of FIG. 2, the upper end of the cone 70 is inclined in a roughly horn shape so as to be easily inserted into the cast hole of the corner fitting, and the lower end is welded to the upper surface of the double pad 60. An improvement surface is formed. Accordingly, the cast hole is seated on the 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 cannot be used for pretreatment work for the cones 70, which are welded and installed on the upper surface of the double pad 60 on the cargo hold floor and have a protruding three-dimensional shape and are arranged at regular intervals. There is.

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 cone blasting device that is welded and installed on the upper surface of a double pad at the bottom of a cargo hold and can be effectively used for pretreatment of cones that have a protruding three-dimensional shape and are arranged at regular intervals.

The present invention is intended to provide a cone blasting device that can effectively respond to environmental regulations by forming a closed space to suppress the spread of dust generated during blasting operations.

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

According to one aspect of the present invention, a housing having a shape in which all sides are closed to form an internal space in which to place a cone to be pretreated, and the upper and lower surfaces are hollow and open; a blasting unit positioned in the interior space of the housing to spray abrasive material onto the cone; And a cone that is fixed using the edge of the open upper surface of the housing to support the blasting unit at the top, and includes a transfer unit that transfers the blasting unit in a first direction and a second direction perpendicular to the first direction. A blasting device is provided.

The transfer unit includes a first guide rail and a second guide rail installed on opposing edges of the upper end of the housing, respectively, extending along a first direction, parallel to each other, and spaced apart from each other. a first transport member mounted on the first guide rail and moved and stopped in a first direction under the control of a controller; a second transport member mounted on the second guide rail, moving at the same speed and direction as the first transport member in a first direction under the control of a controller, and stopping at a position corresponding to each other; a third guide rail extending in a second direction perpendicular to the first direction, each end of which is installed to be fixed to the first transport member and the second transport member; and a third transport member mounted on the third guide rail and moved and stopped in a second direction under control of the controller, wherein the blasting unit has a shape extending toward the inner space of the housing. 3 Can be combined with a carrier.

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 it may include a spray nozzle that sprays the abrasive and compressed air introduced into the sprayer body to the outside.

The spray nozzle may be coupled to the sprayer body to have a predetermined inclination angle, and may have a nozzle structure when rotated with the coupling portion with the sprayer body as the center of rotation.

It further includes a region-limiting cover fixedly installed to separate the internal space of the housing into an open upper region and a closed lower region, wherein the region-limiting cover is located on the inside of the body so that the spray nozzle is located in the closed lower region. The area may be fixed to the outer peripheral surface of the injector body, and the four-way border area may be fixed to correspond to the four-way side walls of the housing.

In order to discharge abrasives and dust present in the closed lower area to the outside by spraying abrasives from the spray nozzle, a suction hose connector to which a suction hose is connected is formed on a side area of the housing corresponding to the closed lower area. It can be.

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.

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

In addition, it has the effect of effectively responding to environmental regulations by forming a closed space and suppressing the spread of dust generated during blasting work.

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.

1 is a diagram showing a blasting device according to the prior art.
Figure 2 is a diagram showing the shape of the cone installation on the bottom of the cargo hold.
Figure 3 is a diagram showing a cone blasting device according to an embodiment of the present invention.
Figure 4 is a view showing a transfer unit of a cone blasting device according to an embodiment of the present invention.
Figure 5 is a view showing a blasting unit of a cone blasting device according to an embodiment of the present invention.
Figure 6 is a diagram illustrating the cone blasting operation sequence according to an embodiment of the present invention.
Figure 7 is a view showing the area-limited cover installation shape of the 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 3 is a view showing a cone blasting device according to an embodiment of the present invention, Figure 4 is a view showing a transfer unit of the cone blasting device according to an embodiment of the present invention, and Figure 5 is an embodiment of the present invention. This is a drawing showing the blasting unit of the cone blasting device according to . Figure 6 is a diagram illustrating the cone blasting operation sequence according to an embodiment of the present invention, and Figure 7 is a diagram showing the area-limited cover installation shape of the cone blasting device according to an embodiment of the present invention.

Referring to FIG. 3, the cone blasting device 100 includes a transfer unit 110, a blasting unit 120, and a housing 130.

The housing 130 has a top surface closed on all sides and hollow so that the cone 70 to be pretreated is placed therein and the blasting unit 120 is located in the upper area adjacent to the cone 70. The upper and lower surfaces are formed in an open, pierced shape.

The four sides of the housing 130 may be closed with an opaque plate, but may be formed entirely or partially of a transparent material such as a transparent acrylic plate so that the blasting operation on the cone 70 can be confirmed from the outside. It may be possible.

A suction hose connector 140 may be formed on one side of the housing 130. Through a suction hose (not shown) externally connected to the suction hose connector 140, dust generated by the abrasive material sprayed during the pretreatment process of the cone 70, the sprayed abrasive material, and compressed air can be discharged to the outside. You can.

A transfer unit 110 that transfers the blasting unit 120 can be mounted using the open upper surface of the housing 130.

As shown in FIG. 4, the transfer unit 110 includes a first guide rail 310, a second guide rail 312, a first transfer element 315, a second transfer element 317, and a third guide rail. It may include 330 and a third transporter 335.

The first guide rail 310 and the second guide rail 312 extend along the first direction on opposite edges of the upper end of the housing, and are installed parallel to and spaced apart from each other.

A first transport body 315 is mounted on the first guide rail 310 so as to move along the direction of extension of the first guide rail 310 by a motor, which is a driving source (not shown), and on the second guide rail 312, a motor (not shown) is installed. The second transport member 317 is mounted to move along the extension direction of the second guide rail 312 by a motor, which is an unused driving source.

A controller so that each of the first transport body 315 and the second transport body 317 moves at the same speed and direction along the corresponding first guide rail 310 or second guide rail 312 and stops at the same position. The operation may be controlled by (not shown).

The third guide rail 330 extends in a second direction perpendicular to the extension direction of the first and second guide rails 310 and 312, and each end is connected to the first carrier 315 and the second carrier 317. ) is installed to be fixed to. Because of this, the third guide rail 330 is moved in the first direction together when the first and second transport members 315 and 317 are moved.

The third transport member 335 is mounted on the third guide rail 330 to move along the extension direction of the third guide rail 330 by a motor, which is a driving source (not shown).

A blasting unit 120 extending downward toward the inner space of the housing 130 is coupled to the third transport member 335 (see FIG. 3).

The blasting unit 120 may be formed with a fixed length extending toward the internal space of the housing 130 in consideration of the height of the housing 130, but may also be formed with a telescopic structure so that the length can be expanded and contracted.

When the first and second carriers 317 are moved in the first direction and the third carrier 335 is moved in the second direction, the blasting unit 120 coupled to the third carrier 335 is To ensure stable support, the third guide rails 330 may be installed in pairs as shown in FIG. 4 .

At this time, one third carrier 335 may be mounted on each of the pair of third guide rails 330 to form a pair, and the pair of third carriers 335 may have the same moving direction and speed. The movement can be controlled by the controller to move to and stop at the same location. Of course, it goes without saying that one third transport body 335 may be mounted to move along the pair of third guide rails 330.

As described above, the transfer unit 110 moves the blasting unit 120 in the first direction and/or the second direction so that the spray nozzle 420 of the blasting unit 120 is aligned with the cone 70 on the bottom of the cargo hold. It can be positioned in the adjacent upper area.

As shown in FIG. 5, the blasting unit 120 coupled to the third transport body 335 of the transport unit 110 and disposed to extend downward toward the inner space of the housing 130 is disposed in the sprayer body 400. ), and includes an abrasive supply unit 410 and a spray nozzle 420.

A blasting hose introduced through the open upper surface of the housing 130 may be fastened to the abrasive material supply unit 410 to supply abrasive material. The abrasive supplied through the abrasive supply unit 410 flows into the sprayer body 400 together with compressed air supplied from a compressed air supply unit (not shown) and is sprayed toward the cone 70 through the spray nozzle 420.

At this time, the spray nozzle 420 is set at a predetermined inclination angle so that the upper surface of the double pad 60 to which the cone 70 is welded and the surface of the cone 70 can be pretreated as a whole (see (b) of FIG. 2). It is mounted on the injector body 400 as a rotary nozzle structure that rotates around the vertical axis (P in FIG. 5) passing through the central point of the coupling portion where the injector body 400 and the injector nozzle 420 are combined. To this end, the sprayer body 400 may be equipped with a rotation drive unit (not shown) to rotate the spray nozzle 420.

In this way, the spray nozzle 420 mounted at a predetermined inclination angle is driven to rotate with the near end (i.e., the end of the sprayer body) as the center of rotation, so that the far end of the spray nozzle 420 (i.e., the cone 70) The end (relatively adjacent to ) moves over a relatively wide area and sprays the abrasive, which causes the double pad 60 to spray the abrasive over a wide area including not only the upper surface but also the side of the cone 70. It becomes possible.

In order to enable the injection nozzle 420 to perform pretreatment on the entire area of the cone 70, the controller controls the transfer unit 110 to perform relative treatment targeting the cone 70, as shown in FIG. 6. The position of the blasting unit 120 can be manipulated to change.

As shown in FIG. 6, in order to pre-treat the entire upper surface and side of the cone 70 and the upper surface of the double pad 60 adjacent to the cone 70, the spray nozzle 420 is coupled to the sprayer body ( 400) must be able to move in the plane of the first and second directions in response to the position of the cone 70, and the spray nozzle 420 that sprays the abrasive must also be mounted and rotated to achieve a predetermined inclination angle. do.

For this purpose, the transfer unit 110 to which the blasting unit 120 is connected is operated to move horizontally in the first and second direction planes, and the spray nozzle 420 can secure an effective work range by using only one drive shaft. It has the characteristic of being mounted with a rotating nozzle structure.

Since the spray nozzle 420 is mounted to have a pre-specified inclination angle, random pre-processing work for a designated area range is possible, and this has the feature of eliminating the control burden for accurately aiming the work position.

In addition, in order to prevent environmental pollution during pretreatment using abrasives, the entire area around the blasting device is sealed to suppress the dispersion of abrasives sprayed at high speed, thereby improving the probability of securing good work quality for the work range, once the device is installed. It also has the feature of solving the existing problem of not being able to check exactly where and how work was done in real time until the work was completed.

Figure 7 shows the shape of the cone blasting device 100 with the area limiting cover 710 installed.

Generally, during pretreatment using abrasives, a shelter is formed that completely closes the surrounding area at the small block stage, and inside the shelter, abrasives are mixed with compressed air and sprayed at high speed to prevent environmental pollution due to the spread of abrasives and dust. I'm doing it.

In addition, even in the case of mobile work using a blasting device, the recovery of abrasives and dust is very important, so sealing the blasting device itself or the abrasive spraying area is very important.

In order to seal the abrasive spraying area, as shown in FIG. 7, an area-defining cover 710 is provided to separate the internal space of the housing 130 of the cone blasting device 100 into an open upper area and a closed lower area. can be installed.

The area-limiting cover 710 is fixed to the four side walls of the housing 130 so that the four edge areas are formed to close all four directions, and one area of the body area is fixed to the outer peripheral surface of the injector body 400. Can be installed in interior space.

At this time, the lower area closed to the internal space of the housing 130 by the four side walls of the housing 130 formed to close on all sides, the lower surface of the area limiting cover 710, and the bottom of the cargo hold to which the cone 70 is welded. This is formed. In this case, the cone 70 to be pretreated, the double pad 60 to which the cone 70 is welded, and the spray nozzle 420 are located in the closed lower area.

Compressed air and abrasives sprayed with strong injection pressure from the injection nozzle 420 expand the closed lower area of the internal space of the housing 130, and the closed lower area can be maintained even when the closed lower area is expanded. For example, the area-limiting cover 710 may be made of a flexible fiber material. Of course, it goes without saying that the area-limited cover 710 can be made of a fiber material that has a strength that does not cause damage by dispersed abrasives.

In addition, the area-limiting cover 710, one side of which is fixed by the sprayer body 400, is made of a flexible fiber material, so that the blasting unit 120 is moved by the transfer unit 110 for pretreatment work on the cone 70. ) It is natural to be able to respond flexibly even if the location changes.

Abrasives and dust present in the upper surface of the double pad 60 and the lower area closed for pretreatment of the cone 70 may be discharged through a suction hose externally connected to the suction hose connector 140. It is natural that a suction hose connector may be formed on the side of the housing 130 at a position corresponding to the closed lower area for external discharge of abrasives and dust through the suction hose.

As described above, the cone blasting device according to this embodiment is welded and installed on the upper surface of the double pad at the bottom of the cargo hold and can be effectively used for pretreatment work on cones that have a protruding three-dimensional shape and are arranged at regular intervals, and can be used in an enclosed space. It has the advantage of effectively responding to environmental regulations by suppressing the spread of abrasives and dust generated during blasting work.

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.

10: Body 11: Frame
20: blasting unit 30: moving unit
70: Cone 80: Double Pad
100: cone blasting device 110: transfer unit
120: Blasting unit 130: Housing
140: Suction hose connector 310, 312, 330: Guide rail
315, 317, 335: transport body 400: sprayer body
410: Abrasive supply unit 420: Spray nozzle
710: Area limited cover

Claims (6)

A housing with closed sides on all sides to form an internal space for positioning the cone to be pretreated, and a hollow upper and lower surfaces that are open;
a blasting unit positioned in the interior space of the housing to spray abrasive material at the cone; and
Cone blasting including a transfer unit that is fixed using an edge of the open upper surface of the housing to support the blasting unit at the top and transfers the blasting unit in a first direction and a second direction perpendicular to the first direction. Device. According to paragraph 1,
The transfer unit is,
first and second guide rails extending along a first direction and installed parallel to and spaced apart from each other on opposite edges of the upper end of the housing;
a first transport member mounted on the first guide rail and moved and stopped in a first direction under the control of a controller;
a second transport member mounted on the second guide rail, moving at the same speed and direction as the first transport member in a first direction under the control of a controller, and stopping at a position corresponding to each other;
a third guide rail extending in a second direction perpendicular to the first direction, each end of which is installed to be fixed to the first transport member and the second transport member; and
A third transport body mounted on the third guide rail and moved and stopped in a second direction under the control of the controller,
The cone blasting device wherein the blasting unit is coupled to the third carrier in a shape extending toward the inner space of the housing. According to paragraph 2,
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 cone blasting device comprising a spray nozzle that sprays the abrasive and compressed air introduced into the spray body to the outside. According to paragraph 3,
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. According to paragraph 3,
It further includes a region-limiting cover that is fixedly installed to separate the internal space of the housing into an open upper region and a closed lower region,
The area-limited cover is a cone blasting device in which one area inside the body is fixed to the outer peripheral surface of the injector body so that the spray nozzle is located in the closed lower area, and the four-way border area is fixed to correspond to the four-way side walls of the housing. . According to clause 5,
In order to discharge abrasives and dust present in the closed lower area to the outside by spraying abrasives from the spray nozzle, a suction hose connector to which a suction hose is connected is formed on a side area of the housing corresponding to the closed lower area. A cone blasting device.