KR20240030668A - Container cone blasting apparatus - Google Patents

Abstract

A container cone blasting device is disclosed. The container cone blasting device includes a carriage body in which a concave receiving space is formed by opening the lower part so that the container cone to be pretreated and the pretreatment object, which is a double pad, are positioned, and a suction pipe communicating with the receiving space is formed; A moving part mounted on the carriage body so that the carriage body moves on the cargo hold floor; and a blasting unit mounted on the carriage body to spray abrasive material toward a pretreatment object located in the receiving space.

Description

Container cone blasting apparatus}

The present invention relates to a container 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, 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, thereby 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 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 carriage body is positioned so that the protruding container cone is accommodated within the receiving space, the container cone blasting device moves forward or backward until the container cone is contacted, recognizes the work section, and performs pretreatment work on the double pad and container cone. The purpose is to provide a container cone blasting device that can be completed.

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 satisfies environmental regulations by suctioning and recovering the abrasives and dust present in the receiving space area. The purpose is to provide a container cone blasting device that can respond effectively.

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

According to one aspect of the present invention, a carriage body whose bottom is opened to form a concave-shaped receiving space so that a container cone to be preprocessed and a preprocessing object, which is a double pad, are positioned, and a suction pipe communicating with the receiving space is formed; A moving part mounted on the carriage body so that the carriage body moves on the cargo hold floor; and a blasting unit mounted on the carriage body to spray an abrasive toward a pretreatment object located in the receiving space, wherein the blasting unit receives abrasive supplied from an abrasive supply unit and compressed air supplied from a compressed air supply unit. Injector body; and

A container cone blasting device is provided, including a spray nozzle that sprays the abrasive and compressed air introduced into the sprayer body toward the pretreatment object located in 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 into an L shape.

The container cone blasting device further includes contact sensors mounted on opposing inner surfaces of the carriage body, wherein the controller drives the moving unit to move the carriage body in a first direction and in a direction opposite to the first direction. By moving the two container cones welded and fixed to the double pad into contact with the contact sensor while moving in two directions, the work section to control the operation of the blasting unit that sprays the abrasive can be recognized.

The mounting position of the spray nozzle mounted in the receiving space of the carriage body takes into account the side length of the carriage body, the side length of the double pad, and the welded fixing position of the two container cones on the double pad, The position at which the abrasive material sprayed in all work sections reaches one or more of the double pad and the container cone may be determined.

A shielding member may be mounted on the lower surface of the carriage body to block the gap between the lower surface of the carriage body and the bottom of the cargo hold.

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

In addition, when the carriage body is positioned so that the protruding container cone is accommodated within the receiving space, the container cone blasting device moves forward or backward until the container cone is contacted, recognizes the work area, and completes the pretreatment work for the double pad and container cone. There are also effects that can be achieved.

In addition, the dust and abrasives scattered during the blasting operation on the container cone are allowed to stay within the receiving space, thereby suppressing the external spread of dust and abrasives, and the abrasives and dust present within the receiving space are sucked in and recovered, effectively complying with environmental regulations. There are also countermeasure effects.

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 a diagram showing a container cone blasting device according to an embodiment of the present invention.
Figure 3 is a view showing the internal shape 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.

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 a view showing a container cone blasting device according to an embodiment of the present invention, Figure 3 is a view showing the internal shape of the container cone blasting device according to an embodiment of the present invention, and Figures 4 to 6 are the present invention. This is a diagram for explaining the operating state of a container cone blasting device according to an embodiment of the invention.

2 and 3, the container cone blasting device 100 may include a carriage body 110, a moving part 113, and a blasting unit 120.

The carriage body 110 provides a framework on which the blasting unit 120 can be mounted, and the moving part 113 is mounted thereon.

In the carriage body 110, a receiving space 130 having a concave shape with an open bottom is formed to accommodate the container cone 70 to be preprocessed.

A suction pipe 115 is formed in the carriage body 110 to communicate with the receiving space 130, and is connected to the double pad 80 and the container cone 70 through a suction hose (not shown) connected to the suction pipe 115. Abrasives and dust scattered within the receiving space 130 can be recovered through the pretreatment operation.

The carriage body 110 may be formed, for example, in a hexahedral shape, and as illustrated in FIG. 3, the central area where the spray nozzle 125 is formed may be formed to protrude relatively higher than the surrounding area.

At this time, with the double pad 80 and the container cone 70 positioned in the receiving space 130 of the carriage body 110, the carriage body 110 is positioned so that the container cone blasting device 100 can move forward or backward. ) The height of the lowest region of each region is at least relatively higher than the height of the double pad 80 and the container cone 70 (see FIG. 5).

As shown in FIG. 3, contact sensors 160 for detecting contact with the container cone 70 accommodated in the receiving space 130 may be mounted on the opposing inner surfaces of the carriage body 110, respectively. .

The container cone blasting device 100 equipped with the contact sensor 160 is configured to accommodate both the double pad 80 and the first and second container cones welded and fixed to the double pad 80 in the receiving space 130. In the deployed state, the contact of the first container cone and the second container cone with the contact sensor 160 can be detected through forward and backward movements, and through this, the controller 165 sprays abrasive material to perform pretreatment work. The work section can be recognized (see Figure 5).

A moving part 113 is mounted on the carriage body 110 to move the container cone blasting device 100 forward or backward.

The moving unit 113 may include a wheel attached to the carriage body 110 and a driving unit (not shown) that provides power to the wheel.

Under the control of the controller 165, the wheels of the moving unit 113 move the container cone blasting device 100 forward or backward along the outer surface of the object by power provided from the driving unit. That is, the wheels of the moving unit 113 make rolling motion by contacting the outer surface of the object, and the rolling motion of the wheels causes the carriage body 110 to move along the bottom of the cargo hold.

The blasting unit 120 is mounted on the carriage body 110 and may include a spray body 121, an abrasive supply unit 123, and a spray nozzle 125.

As shown in FIG. 3, the injector body 121 and the abrasive supply unit 123 may be mounted to the outside of the carriage body 110 with the carriage body 110 as a boundary, and the injection nozzle 125 is It may be mounted inside the carriage body 110 to spray abrasives into the receiving space 130. Of course, the injector body 121 and the abrasive supply unit 123 are not limited to being mounted on the outside of the carriage body 110.

A blasting hose may be connected to the abrasive supply unit 123 to supply abrasive. The abrasive supplied through the abrasive supply unit 123 is introduced into the sprayer body 121 together with compressed air supplied from a compressed air supply unit (not shown) and is placed in the double axle body 121 through the spray nozzle 125. It is sprayed toward the pad 80 and the container cone 70.

At this time, the spray nozzle 125 is pre-designated 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 FIGS. 5 and 6). It is mounted on the injector body 121 as a rotary nozzle structure that has an inclination angle and rotates around the vertical axis (P in Figure 5) passing through the central point of the joint area where the injector body 121 and the injector nozzle 125 are combined. . To this end, the sprayer body 121 may be equipped with a rotation driver (not shown) to rotate the spray nozzle 125.

In addition, the injection nozzle 125 is formed in an L-shaped bent shape and is mounted so that the injection hole located at the outer end faces the direction of the center of rotation, so that the abrasive sprayed from the injection hole is directed to the polishing target area located below the direction of the center of rotation. It is effective and can be achieved intensively.

In this way, the spray nozzle 125, 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 125 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, 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.

In order to enable the spray nozzle 125 to pre-treat the entire area including the double pad 80 and the two container cones 70 welded to the double pad 80, the controller 165 moves. By controlling the rotational drive of the unit 113, the carriage body 110 can be controlled to move and the blasting process to proceed (see FIG. 5).

In order to pre-treat the entire upper and side surfaces of the container cone 70 and the upper surface of the double pad 80 adjacent to the container cone 70, the carriage body 110 to which the spray nozzle 125 is coupled is the container cone ( 70), the position must be able to be moved on the plane in the first direction and/or the second direction opposite to the first direction, and the spray nozzle 125 for spraying the abrasive is mounted to form a predetermined inclination angle. and needs to be rotated (see Figures 5 and 6).

To this end, the container cone blasting device 100 according to the present embodiment has the carriage body 110 on which the blasting unit 120 is mounted horizontally in the first direction and/or the second direction by driving the moving part 113. The spray nozzle 125 of the blasting unit 120 is moved and has the characteristic of being mounted in a rotary nozzle structure using only one drive shaft.

At this time, since the spray nozzle 125 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 surrounding area of the injection nozzle 125 is entirely sealed by the carriage body 110, which forms a receiving space 130, so that dispersion of the abrasives sprayed at high speed is suppressed, and the rotational By increasing the probability of securing good work quality for the scope of work by spraying, the device, once installed, has the characteristic of solving the existing problem of not being able to check in real time exactly where and how the work was done until the work was completed. .

Referring again to FIG. 2, the controller 165 may control the moving operation of the moving unit 113, the abrasive spraying operation of the blasting unit 120, etc.

Hereinafter, with reference to FIGS. 4 to 6, the preprocessing operation of the container cone blasting device 100 and the control of the controller 165 for this will be briefly described.

For the pretreatment operation on the container cone 70, the container cone blasting device 100 includes a double pad 80 and two container cones spaced apart and welded to the double pad 80, as shown in FIG. 70) is seated on the cargo hold floor in an attitude of accommodating it within the receiving space 130.

When the container cone blasting device 100 is seated on the bottom of the cargo hold and a pretreatment operation start command is input, the controller 165 detects whether the contact sensor 160 mounted on the inner surface of the carriage body 110 detects any one container cone ( The operation of the moving unit 113 is controlled so that the container cone blasting device 100 moves forward (second direction in FIG. 5) or backward (first direction in FIG. 5) until it contacts 70) (① in FIG. 5). reference).

The pre-processing operation start command may be input by, for example, an operator manipulating an input button provided on a preset input device (not shown), or a detection sensor that senses that the container cone blasting device 100 is seated on the floor. It may also be recognized using the generated sensing information.

The detection sensor may be, for example, a distance detection sensor that detects the distance between the lower side of the carriage body 110 and the bottom of the cargo hold. The controller 165 may be preset to recognize that the container cone blasting device 100 is seated on the bottom of the cargo hold and that a preprocessing operation start command is input when the distance value sensed by the distance detection sensor is less than or equal to a predetermined threshold. there is.

When sensing information indicating that the container cone 70 has been contacted is input to the contact sensor 160 (see ② in FIG. 5), the controller 165 recognizes the spraying start position and starts the pre-processing operation of the blasting unit 120. The operation of the moving unit 113 is controlled to move in the direction opposite to the direction in which the container cone blasting device 100 is moved to contact the container cone 70 (see ③ and ④ in FIG. 5). That is, under the control of the controller 165, the spray nozzle 125 of the blasting unit 120 sprays the abrasive while rotating around a predetermined rotation axis as the rotation center, as shown in FIG. 6.

At this time, the mounting position of the spray nozzle 125 mounted in the receiving space 130 of the carriage body 110 is the side length of the carriage body 110, the side length of the double pad 80, and the container on the double pad 80. Considering the welding and fixing position of the cone 70, the position at which the sprayed abrasive reaches the double pad 80 and/or the container cone 70 can be determined at the injection start position and the injection end position, which will be described later.

In addition, dust and abrasives present in the receiving space 130 due to the abrasives sprayed from the spray nozzle 125 are discharged to the outside through the gap (T in FIG. 5) between the bottom of the cargo hold and the lower surface of the carriage body 110. To prevent this, a shielding member such as a nylon brush, silicone foam, etc. may be mounted on the lower surface of the carriage body 110.

The operation of spraying abrasives from the blasting unit 120 while the container cone blasting device 100 moves is when another container cone 70 contacts the contact sensor 160 due to the movement of the container cone blasting device 100. This continues until the controller 165 recognizes that the injection end position has been reached by inputting sensing information indicating that the injection has been completed (see ⑤ and ⑥ in FIG. 5). That is, when the controller 165 recognizes that the spraying end position has been reached, it can control the abrasive spraying operation of the blasting unit 120 and the rotational drive of the moving unit 113 to end.

In addition, the controller 165 may control abrasives and dust scattered in the receiving space 130 to be recovered through a suction hose connected to the suction pipe 115 formed to communicate with the receiving space 130 of the carriage body 110. . Of course, the control operation to recover the abrasives and dust may be performed when the spraying end position is reached, but may also be continuously performed while the container cone blasting device 100 moves from the spraying start position to the spraying end position.

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 carriage body 110 is positioned so that the protruding container cone 70 is accommodated within the receiving space 130, the container cone blasting device 100 moves forward or backward and the two container cones 70 come into contact with each other. It performs pretreatment work on double pads and container cones in the work section, and also has the feature of collecting abrasives and dust present in the receiving space area by suction.

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: Carriage body
113: moving part 115: suction pipe
120: blasting unit 121: sprayer body
123: Abrasive supply unit 125: Spray nozzle
130: receiving space 160: contact sensor
165: controller

Claims (5)

A carriage body whose bottom is opened to form a concave-shaped receiving space so that the container cone to be preprocessed and the preprocessing object, which is a double pad, are positioned, and a suction pipe communicating with the receiving space is formed;
A moving part mounted on the carriage body so that the carriage body moves on the cargo hold floor; and
A blasting unit mounted on the carriage body to spray abrasive material toward a pretreatment object located in the receiving space,
The blasting unit is,
a sprayer 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 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 2,
It further includes contact sensors mounted on opposite inner surfaces of the carriage body,
The controller drives the moving unit to move the carriage body in a first direction and a second direction opposite to the first direction, and causes the contact sensor to contact the two container cones welded and fixed to the double pad, respectively, so that the abrasive material A container cone blasting device that recognizes a work section to control the operation of the blasting unit that sprays. According to paragraph 3,
The mounting position of the spray nozzle mounted in the receiving space of the carriage body takes into account the side length of the carriage body, the side length of the double pad, and the welded fixing position of the two container cones on the double pad, A container cone blasting device, which is determined by the position at which the abrasive material sprayed in all work sections reaches one or more of the double pad and the container cone. According to paragraph 1,
A container cone blasting device in which a shielding member is mounted on the lower surface of the carriage body to block the gap between the lower surface of the carriage body and the bottom of the cargo hold.