KR20130102794A - Blasting apparatus - Google Patents

Abstract

PURPOSE: A blasting device is provided to perform a blasting work by sealing an outer space of a welding unit between a column and a stool in which are target objects having a complex shaped structure. CONSTITUTION: A blasting device comprises a sealing unit (100), a blasting unit (200), and a connection line (300). The sealing unit is installed to a target object in a detachable method and seals an outer space of a welding unit of the target object. The blasting unit supplies a shooting material inside the sealing unit, processes the surface of the welding unit, and collects the shooting material and dust after the surface is processed. The connection line is connected to the sealing unit and the blasting unit to be a path for supplying or collecting the shooting material and the dust.

Description

BLASTING APPARATUS

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blasting apparatus for surface-treating a column and a stool welding part, which is a workpiece having a complicated shape structure of a ship or a building made by welding, with an injection material.

For ships and structures made by welding, the surface of the welded area after welding can be treated.

For example, after loading between blocks in shipbuilding, preprocessing work is carried out in a docked or quay-covered area.

 Coating preprocessing work is usually done by a hydropower tool of grinding. In manual grinding work, work intensity is high and dust is generated so that worker avoids work.

Therefore, labor costs are rising for labor supply and demand. In addition, the quality of the preprocessing operation is limited by the hand tool operation, and dusts and sparks generate adverse effects on the surrounding work sites.

In addition, the abrasive blades of the grinder used in the manual grinding operation are consuming very much, resulting in a situation in which a consumable cost is continuously generated.

Currently, vacuum adsorption robot blasting technology is developed and applied in a pretreatment process after mounting, or, as disclosed in the patent literature, an automatic blasting working apparatus of an outer surface of an iron plate is used.

The blasting operation method has a number of methods, but the general method is to use a high-pressure compressed air to put a grit (grit) corresponding to the abrasive or spraying material.

As the compressed air and the injection material are injected through the blasting nozzle, the speed of the injection material is increased and the impact amount is increased. As these particles of the jetting material collide with the surface, they remove the rust and foreign matter from the surface and create roughness.

When working in an unclosed open space, the sprayed material is blown in all directions, and the abrasives from the sprayed material and dust generated from the surface are blown in all directions.

Therefore, blasting in an exposed space is not possible on board unless there is a separate workshop.

In addition, there may be a limitation in using the automatic blasting (BLASTING) working apparatus of the iron plate outer surface of the patent document according to the type of ship and the application target.

For example, as shown in FIG. 1, the top side module of the drillship is placed on the hull, wherein a stool 1 is disposed on the hull top plate, and the stool 1 is disposed on the hull. The column 2 of the upper module of the drillship is positioned and mounted between each other, and then the stool 1 and the column 2 are welded.

The stool 1 has a stool upper frame covering the stool lower frame 1a in a plate shape having a stool lower frame 1a fixed to the hull and a rim that protrudes more than the upper cross-sectional area of the lower stool frame 1a. 1b). The column 2 may include a columnar H beam 2a and a reinforcement plate 2b.

As the column 2 is erected and welded on the stool upper plate 1b of this stool 1, the weld part 3 corresponding to an H-shaped mounting welding line is formed.

The weld 3 between the stool 1 and the column 2 is managed as a work point to perform surface treatment.

However, if hundreds of work points are surface-treated with a grinder, a manual power tool, one person can handle only two or three volumes per day, and the working air becomes longer, compared to blasting work. Work quality is inevitably deteriorated.

In addition, the automatic blasting work device on the outer surface of the iron plate of the patent document also semi-automated the surface treatment work performed by the operator, due to the injection material, dust, etc. will adversely affect the surrounding workplace environment and the health of the worker.

Accordingly, it is necessary to develop equipment that is excellent in work quality and can improve work efficiency, improve worker's health while improving workplace environment, and be easily installed or disassembled by disassembly and assembly.

Published Utility Model Publication No. 20-1989-0004580

An embodiment of the present invention is to provide a blasting apparatus that can perform a comfortable blasting operation by sealing the outer space between the column and the stool welding of the workpiece having a complex shape structure, easy to install disassembly.

According to an aspect of the present invention, the sealing unit is installed on the workpiece in a detachable manner to seal the outer space of the welded portion of the workpiece, and supplying the injection material inside the sealed unit to treat the surface of the welded portion, the surface A blasting apparatus may be provided that includes a blasting unit for recovering the spray material and the dust after the treatment, and a connection line connected to the sealing unit and the blasting unit so as to supply or recover the spray material and dust.

The blasting unit may include: a blasting tank which presses the spray material into the sealed unit and separates the spray material from the dust by its own weight when collecting the dust and the spray material; A dust collecting device connected to the blasting tank by a suction hose to provide a vacuum pressure necessary for suction of the injection material and dust; A storage box for storing and storing the sealing unit, the blasting hose, and the suction hose; It may include a moving cart for mounting and moving the blasting tank and the dust collector and the storage box.

In addition, the connection line, the blast nozzle connected to the nozzle mounting portion of the hermetic unit; A blasting hose connected between the blasting nozzle and the supply side of the blasting tank; It may include a suction hose connected between the discharge portion disposed in the sealed unit and the recovery side of the blasting tank.

In addition, the moving cart, a plurality of wheels installed in the lower portion of the bogie frame; A moving handle installed in the bogie frame for steering the bogie frame; It may include a driving device for generating a driving force to the moving cart by operating the drive motor and the driving wheel installed in the balance frame when the lever of the movable handle.

The suction hose may further include first and second pipes rotatably coupled to each other, and first and second pipes respectively provided in the diameter direction inside the first and second pipe bodies, and having a plurality of holes coincident with each other. A vacuum pressure control unit having two control plates may be further provided.

The sealing unit may further include a sealing cover assembled to be disassembled by a plurality of pieces surrounding the workpiece; An upper fixing module for tightly fixing the upper part of the sealing cover to one side of the workpiece; A lower fixing module for tightly fixing the lower part of the sealing cover to the other side of the workpiece; A nozzle mounting part installed on the piece and connected to the blasting nozzle of the blasting unit; Is installed on the piece may include a discharge portion for discharging the injection material and dust after the blasting operation.

In addition, the sealing cover, the cover upper portion to assemble the piece to form a rectangular bottleneck shape; A cover ceiling extending inclined from the lower end of the cover; A cover body part forming a rectangular bottle body shape at the bottom of the cover ceiling part; It may include a cover skirt extending downward from each of the lower sides of the cover body portion.

In addition, the piece may be provided with a groove portion so as to have a sealing force and a coupling force at the portions to be mutually coupled between the pieces, the mounting means for mutual coupling between the pieces may be provided in the groove portion.

In addition, the present embodiment may further include a shape fixing auxiliary bracket attached to an outwardly folded portion and an inwardly folded portion of the piece.

In addition, the present embodiment may further include a working view window provided on the piece to observe the inside of the sealing cover from the outside.

In addition, the upper fixing module, the airbag disposed along the circumference of the upper cover of the cover; A plurality of rings disposed along an outer surface of the airbag; It may include an upper rope to close the airbag to the workpiece in accordance with the tightening to the ring.

In addition, the lower fixing module, the assembly of the disassembly-type square ring shape that is fitted or adhered to the edge of the stool top plate of the workpiece; A lower rope for tightening and fixing the cover skirt of the sealing cover padded to the outer groove of the mount; It may include a tightening lever that is screwed to the mount and presses the edge bottom of the stool top plate fitted to the inner groove of the mount.

In addition, the present embodiment may further include a sealing jig for sealing the gap between the cover upper portion and the workpiece of the sealing cover.

In addition, the closed jig, the tube is expanded in accordance with the filling of the compressed air; A pair of guide brackets disposed opposite to each other to maintain the shape of the tube and fixed to an inner surface of the tube; A guide shaft coupled to the guide bracket so as to mutually guide the side portions of the tube corresponding to the fixed position of the guide bracket; Jig handle coupled to one end of the guide shaft extending to the outside of the tube; It may include an injection hole for injecting compressed air into the tube.

Embodiment of the present invention can improve the surface treatment work quality compared to the grinding work for the weld, there is an advantage that can shorten the working air.

In addition, the embodiment of the present invention can ensure a comfortable blasting work area by sealing the outer space of the weld between the column and the stool, which is a workpiece having a complicated structure, and the injection material, dust does not blow into the air to improve the surrounding workplace environment It can be kept clean, and there is an effect that can prevent workers' health deterioration in advance.

In addition, the embodiment of the present invention provides an airtight unit having a disassembly-type sealing cover, there is an advantage that can be easily assembled and installed around the mounting weld line of the workpiece of the complex shape structure.

1 is a perspective view of a workpiece to be blasted by the present invention.
2 is a perspective view showing the configuration of a blasting apparatus according to an embodiment of the present invention.
3 is a perspective view showing a coupling relationship of the sealed unit shown in FIG.
4 is a perspective view of the first or third piece of the closure cover shown in FIG. 3.
FIG. 5 is a perspective view of a second or fourth piece of the hermetic cover shown in FIG. 3. FIG.
FIG. 6 is a side view illustrating a state in which the sealing unit illustrated in FIG. 2 is installed in the workpiece illustrated in FIG. 1.
7 is a plan view illustrating an operation relationship of the vacuum pressure adjusting unit illustrated in FIG. 3.
8 is a perspective view of the closure jig shown in FIG.
9 is a plan view for explaining an operating state of the closing jig shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

2 is a perspective view showing the configuration of a blasting apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the workpiece W to be blasted by the present embodiment is welded between the stool top plate 1b of the stool and the reinforcement plate of the column and the H beam 2a in the hull, offshore structure, building, and the like. As it may be applied as any structure having (3), it may not be limited to the hull or offshore structure of a particular ship.

The column 2 corresponding to the workpiece W may have an H beam shape formed by building up the H beam.

This embodiment can provide a covering means that can create a jig, or blasting workspace, suitably in close contact with a complex shape such as column 2.

The present embodiment may have a device configuration that can prevent the scattering of the spraying material and inhale dust while performing the blasting work in the site where the work corresponding to the specific portion of the hull or structure is installed.

To this end, the present embodiment may include the sealing unit 100, the blasting unit 200, the connection line 300.

The sealing unit 100 may be installed on the workpiece W in a detachable manner and may serve to seal an outer space of the welding part 3 of the workpiece W.

The sealing unit 100 performs a function of creating a blasting workspace, but the sealing unit 100 may include a unit component or a unit module of each function to be described in detail below.

The blasting unit 200 may supply a spray material inside the sealed unit 100 to treat the surface of the welded part, and may serve to recover the spray material and the dust after the surface treatment.

The blasting unit 200 includes a blasting tank 210 for feeding the spray material into the sealed unit 100 and separating the spray material from the dust by its own weight when collecting the dust and the spray material; A dust collector 220 connected to the blasting tank 210 with a suction hose 212 to provide a vacuum pressure necessary for suction of the injection material and dust; A cabinet-shaped storage box 230 having an opening / closing door for storing and storing the sealing unit 100, the blasting hose 320, and the suction hose 330; It may include a moving cart 240 for mounting and moving the blasting tank 210 and the dust collector 220 and the storage box 230.

The moving cart 240 may include a plurality of driven wheels 242 installed below the balance frame 241; A movement handle 243 installed at the balance frame 241 for steering the balance frame 241; It may include a drive device 244 for generating a driving force to the moving cart 240 by operating the drive motor and the driving wheel installed in the balance frame 241 when the lever of the movable handle 243.

That is, according to the present embodiment, the sealing unit 100 or the like can be loaded on the moving cart 240 and used easily while moving toward each work W, and the unit parts or modules of the sealing unit 100 are blasted. Can be installed and used in the municipal work (W), at this time can be easily and quickly performed assembly installation and disassembly of the sealed unit (100).

The connection line 300 may serve to connect the sealing unit and the blasting unit so as to supply or recover the spray material and the dust.

The connection line 300 may include a blasting nozzle 310 mounted on any one of the nozzle mounting parts 150 of the sealing unit 100; A blasting hose 320 connected between the blasting nozzle 310 and the supply side of the blasting tank 210; And a suction hose 330 connected between the discharge unit 160 disposed in the sealing unit 100 and the recovery side of the blasting tank 210.

Here, the ends of the blasting hose 320 and the suction hose 330 may be attached by mating with the connection object, and a quick coupler or one-touch (not shown) having an O-ring capable of maintaining watertightness may be further provided.

In this embodiment, basically the sealed unit 100 required for the operation is made of a kind of unit parts or modules, it can be differentiated from the device configuration that works with tools only in general automation equipment.

3 is a perspective view showing a coupling relationship of the sealed unit shown in FIG.

Referring to FIG. 3, the sealing unit 100 includes a sealing cover 110 assembled to be disassembled by a plurality of pieces 111 to 114 surrounding the workpiece. For example, the plurality of pieces 111 to 114 may serve to surround the circumference of the H beam 2a and the stool top plate 1b of the column of the workpiece.

The sealing cover 110 should be shaped so that the blasting work space can be made around the work piece, and should be sealed so that the spraying material and dust do not abnormally escape out of the blasting work space, and the blasting work around one work piece. After being used to form a space, it can be manufactured to meet the conditions that installation and disassembly must be simply configured so that they are separated from each other and quickly reused in the other workpiece.

Sealing cover 110 is a cover upper portion 115 to assemble a piece (111 ~ 114) to form a rectangular bottleneck shape; Cover ceiling portion 116 which extends obliquely at the bottom of the cover upper portion 115: Cover body portion 117 forming a rectangular bottle body shape at the bottom of the cover ceiling portion 116; The cover skirt 118 extending downward from each of the lower sides of the cover body portion 117 may be included.

Here, each piece 111 to 114 can be produced by selecting a material with less wear. For example, the material of the pieces 111 to 114 may be a wear-resistant natural rubber or a urethane rubber having a low hardness, and may be manufactured by forming a basic shape with a mold and cutting and further processing.

In addition, the pieces 111 to 114 correspond to the upper cover 115, the cover ceiling 116, the cover body 117, and the cover skirt 118 of the airtight cover 110 by using a double injection method. It can be made to have a different material of the portion to be.

That is, the material of the pieces 111 to 114 corresponding to the upper cover 115 and the cover skirt 118 of the airtight cover 110 may be made of an important material, and the cover ceiling of the airtight cover 110. The material of the pieces 111 to 114 corresponding to the 116 and the cover body 117 may be made of a material having important wear resistance.

The inner surface of the cover upper portion 115 of the hermetic cover 110 may be in close contact with a position other than the welded portion of the workpiece (eg, the flange outer surface of the H beam 2a of the column).

The cover ceiling 116 and the cover body 117 of the airtight cover 110 may create a blasting work space outside the welded portion of the workpiece (for example, a weld line between the H beam 2a of the column and the stool top plate 1b). Can be.

The cover skirt 118 of the airtight cover 110 may be folded using a portion connected to the lower portion of the cover body 117 as a fold line.

In particular, even when the upper cover 115 of the airtight cover 110 surrounds the circumference of the H beam 2a corresponding to the workpiece, the spaces W1 and W2 which are not sealed by the cross-sectional shape characteristic of the H beam 2a. ) May be formed.

That is, in the shape of the H beam 2a, there is a web corresponding to the center portion of the H beam 2a and a flange formed perpendicularly to both ends of the web. The web and the flange inner spaces W1 and W2 are provided. This makes the sealing shape complicated and difficult.

Therefore, the sealing unit 100 is a space between the upper cover 115 of the sealing cover 110 and the workpiece (for example, the H beam 2a) in order to simplify the shape of the H beam 2a into a rectangular shape. It may include a plurality of (eg two) sealing jig 120 of the airbag structure to fill and seal the W1, W2.

The sealing jig 120 may be described in detail with reference to FIGS. 8 and 9 below, even though the size of the workpiece is partially different, the spaces W1 and W2 may be used to correspond to different shapes and sizes by using the expansion characteristics of the airbag structure. You can fill in.

The sealing unit 100 includes an upper fixing module 130 for tightly fixing the upper part of the sealing cover 110, for example, the upper cover 115 of the sealing cover 110 to one side of the workpiece, and the sealing cover 110. The lower portion, for example, may include a lower fixing module 140 for tightly fixing the cover skirt 118 of the sealing cover 110 to the other side of the workpiece.

The upper fixing module 130 is an airbag 131 disposed along the circumference of the upper cover 115 of the airtight cover 110, a plurality of rings 132 disposed along the outer surface of the airbag 131, and It may include an upper rope 133 to close the airbag 131 to the workpiece in accordance with the tightening to the ring 132.

The lower fixing module 140 is a disassembly-mounted square ring-shaped mounts 141 and 142 that are fitted or adhered to the edge of the stool upper plate 1b of the workpiece, and outer grooves 143 of the mounts 141 and 142. 144, the lower rope 145 for tightening and fixing the cover skirt 118 of the closed cover 110, which is padded on the groove, and the inner groove of the mount 141 is screwed to the mount 141. 146 may include a tightening lever 147 for compressing the bottom of the edge of the stool top plate (1b).

The tightening and fixing of the lower rope 145 may mean winding the circumference of the cover skirt 118 with the lower rope 145 and then fixing both ends of the lower rope 145 by tying together.

The nozzle mounting unit 150 is installed at each piece 111 to 114 of the airtight cover 110 and has a hole in the form of a quick coupler or a one-touch clamp so that the blast nozzle can be easily inserted and removed. You can start blasting quickly.

The discharge unit 160 is installed on any one of the pieces 111 to 114 of the airtight cover 110, and may discharge the spray material and the dust after the blasting operation.

Discharge portion 160 also has a hole in the form of a quick coupler or one-touch clamp, it may be coupled through the end of the suction hose 330.

The suction hose 330 may be further provided with a vacuum pressure adjusting unit 340 to be described in detail with reference to FIG.

On the other hand, the sealing cover 110 may be composed of four pieces (111 ~ 114) to be installed one by each side to facilitate its installation and disassembly, the portions that are mutually coupled between the pieces (111 ~ 114) and the sealing force It is coupled to each other by using the groove portion and the fitting portion to have a coupling force, and mounting means (for example, projection fastening hole and projection) for mutual coupling between the pieces (111 ~ 114) is provided in the groove portion, temporary of the mutually It is possible to fix it.

4 is a perspective view of the first or third piece of the closure cover shown in FIG. 3, and FIG. 5 is a perspective view of the second or fourth piece of the closure cover shown in FIG. 3.

In more detail with respect to the four pieces 111 to 114, the pieces 111 to 114 are the first piece 111, the second piece 112, the third piece 113, and the fourth piece 114. It can be divided into.

Since the first piece 111 and the third piece 113 are the same type, the third piece 113 may be described as a representative to avoid overlapping descriptions, and the second piece 112 and the fourth piece 114 may also be described. Since it is homogeneous, the fourth piece 114 may be representatively described.

Referring to FIG. 4, the left and right ends of the first or third piece 113 are foldable and have flat fitting portions 170, 171, and 172, and are arranged in a plurality of predetermined shapes such as buttons arranged at predetermined intervals. Two projections 173.

Referring to FIG. 5, the left and right ends of the second or fourth piece 114 may include grooves 180, into which fitting portions 170, 171, and 172 of the third piece 113 of FIG. 4 may be fitted. 181 and 182, and have a plurality of projection fastening holes 183 formed at intervals corresponding to the projections 173. As shown in FIG.

Here, the projection 173 and the projection fastening hole 183 is a kind of mounting means, it may be replaced by a homogeneous mounting means such as Velcro fasteners, snap buttons.

4 and 5, the fitting portions 170, 171, and 172 are inserted into the groove portions 180, 181, and 182, and then, the protrusions 173 are inserted into the protrusion fastening holes 183, thereby sealing the force. And coupling force may eventually be realized at the coupling site between the pieces 113 and 114.

The upper end of each piece 113, 114 is matched with the air bag 131 corresponding to the upper fixing module mentioned above, by the upper rope 133 fitted to the ring 132 of the air bag 131, the piece 113 The sealing function at the top of 114 may be implemented.

Shape fixing auxiliary brackets (174, 175, 184, 185) may be further attached to the outwardly folded portions and the inwardly folded portions of each piece (113, 114).

The auxiliary brackets 174, 175, 184, and 185 provide a function of maintaining a certain shape even when blasting air pressure is not applied, thereby providing convenience to the operator when installing the pieces 113 and 114. have.

Each piece (113, 114) is provided with a working viewing window (176, 186) for observing the inside of the sealed cover from the outside, the glass of the viewing window (176, 186) is configured to be interchangeable, and the safe operation and At the same time, you can always have a clear view.

FIG. 6 is a side view illustrating a state in which the sealing unit illustrated in FIG. 2 is installed in the workpiece illustrated in FIG. 1.

Referring to FIG. 6, the sealing cover 110 of the sealing unit 100 may be installed to be sealed to the work W by the sealing fixture 120, the upper fixing module 130, and the lower fixing module 140. have.

That is, the worker assembles the airtight cover 110 and arranges it around the workpiece (W).

Thereafter, the operator installs the airtight jig 120, applies air to the airbag 131 of the airtight jig 120 and the upper fixing module 130, and inserts the upper rope 133 into the ring 132 to attach the upper rope. Tie both ends of (133) together.

In addition, the operator installs and tightens the mounting table 141 so that the inner groove 146 of the mounting table 141 of the lower fixing module 140 is fitted to the edge of the stool upper plate 1b of the workpiece (W). The mount 141 may be fixed to the stool top plate 1b using the lever 147.

Thereafter, the worker may tighten the lower rope 145 so that the cover skirt 118 of the airtight cover 110 enters the outer groove 143 of the mount 141.

In this state, the operator may connect the blasting nozzle or suction hose corresponding to the connection line to the nozzle mounting unit 150 and the discharge unit 160, respectively, and then start the blasting operation.

On the other hand, when the air pressure applied to the inside of the airtight cover 110 through the blasting nozzle and the vacuum pressure applied to the inside of the airtight cover 110 through the suction hose is imbalanced, the airtight cover 110 is swollen or crushed. Can contract.

To adjust this unbalanced state, the operator may use the vacuum pressure adjusting unit 340 of FIG. 3 or FIG. 7.

Referring to FIG. 7, the vacuum pressure adjusting unit 340 may have a first and second tubular bodies 341 and 342 rotatably coupled to each other and a diameter of the first and second tubular bodies 341 and 342 in the radial direction. It may have first and second adjustment plates 343 and 344 respectively installed and having a plurality of holes coincided with each other.

The first tube 341 has a relatively large diameter and may have a groove for rotation formed on its inner circumferential surface.

The second tubular body 342 has a relatively small diameter, and may be formed on the outer circumferential surface of the guide protrusion coupled to the rotating groove of the first tubular 341 and slid.

When the operator rotates the second tube body 342 forward or reversely based on the first tube body 341, the hole of the second adjusting plate 344 is formed in the state of FIG. 7 (a) to (b). As partly blocked by the adjustment plate 343 corresponding to the rotation rate, the hole passage cross-sectional area is reduced, so that the vacuum pressure can be adjusted to be weakened.

When the state (b) of FIG. 7 returns to the state (a), the holes penetrate and coincide with each other so that the vacuum pressure can be returned to the original state.

In this way, the operator may operate the vacuum pressure adjusting unit 340 in detail to find a balance point of air pressure and vacuum pressure in which the airtight cover 110 is not expanded or crushed.

FIG. 8 is a perspective view of the sealed jig shown in FIG. 3, and FIG. 9 is a plan view illustrating an operating state of the sealed jig shown in FIG. 8.

As shown in FIG. 8, the closing jig 120 is disposed to face each other to maintain the shape of the tube 121 and the tube 121 that expands according to the filling of the compressed air, and the inner surface of the tube 121. A pair of guide brackets 122 and 123 fixed to the guide brackets and the side surfaces of the tube 121 corresponding to the fixed positions of the guide brackets 122 and 123 to guide the guide brackets 122, The guide shaft 124 coupled to the 123, the jig handle 125 coupled to one end of the guide shaft 124 extending to the outside of the tube 121, and compressed air is injected into the tube 121 It may include an injection hole 126 to.

Here, the other end of the guide shaft 124 is fixed to the other guide bracket 122, the portion of one end of the guide shaft 124 is in the shaft through hole of the tube 121 and one side guide bracket 123 It can be fastened and slid tightly.

The shaft through hole of the tube 121 and the side guide bracket 123 may be further provided with a conventional sealing member (not shown) to enable the sealing of the compressed air and the sliding operation of the guide shaft 124.

As illustrated in FIG. 9, the worker may temporarily arrange each closed jig 120 in the left and right blanks W1 and W2 of the workpiece W by using the jig handle 125.

When the airtight jig 120 on the left side injects compressed air into the tube 121 through the inlet 126, the tube 121 is expanded into a rectangular parallelepiped by the guide bracket and the guide shaft 124 described above, thereby The left blank W1 of the water W can be filled.

On the contrary, when the right side jig 120 releases compressed air from the tube 121, the volume of the tube 121 is reduced so that the right side jig 120 easily at the right side space W2 of the workpiece W. Can be dismantled.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. For example, a person skilled in the art can change the material, size and the like of each constituent element depending on the application field or can combine or substitute the embodiments in a form not clearly disclosed in the embodiment of the present invention, Of the range. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and that such modified embodiments are included in the technical idea described in the claims of the present invention.

100: sealed unit 110: sealed cover
120: sealed jig 130: upper fixing module
140: lower fixing module 150: nozzle mounting portion
160: discharge part 200: blasting unit
210: blasting tank 220: dust collector
230: storage box 240: mobile cart
300: connection line 310: blasting nozzle
320: blasting hose 330: suction hose

Claims (14)

A sealing unit installed on the workpiece in a detachable manner to seal an outer space of the welded portion of the workpiece;
A blasting unit for supplying a spray material inside the sealed unit to treat the surface of the welded part, and recovering the spray material and dust after the surface treatment;
A connection line connected to the closure unit and the blasting unit to be a supply or recovery path of the spray material and dust;
Blasting device.
The method of claim 1,
The blasting unit,
A blasting tank which presses the spray material into the sealed unit and separates the spray material from the dust by its own weight when collecting the dust and the spray material;
A dust collecting device connected to the blasting tank by a suction hose to provide a vacuum pressure necessary for suction of the injection material and dust;
A storage box for storing and storing the sealing unit, the blasting hose, and the suction hose;
And a mobile truck for mounting and moving the blasting tank, the dust collector, and the storage box.
Blasting device.
3. The method of claim 2,
The connection line includes:
A blasting nozzle connected to the nozzle mounting part of the sealing unit;
A blasting hose connected between the blasting nozzle and the supply side of the blasting tank;
And a suction hose connected between the discharge part disposed in the sealed unit and the recovery side of the blasting tank.
Blasting device.
3. The method of claim 2,
The moving cart,
A plurality of wheels installed under the bogie frame;
A moving handle installed in the bogie frame for steering the bogie frame;
It includes a drive device for generating a driving force to the moving cart by operating the drive motor and the driving wheel installed in the balance frame when operating the lever of the movement handle
Blasting device.
3. The method of claim 2,
In the suction hose,
Vacuum pressure control having first and second tubular bodies rotatably coupled to each other, and first and second throttling plates respectively installed in the diameter direction inside the first and second tubular bodies and having a plurality of holes coincident with each other. More wealth
Blasting device.
The method of claim 1,
The sealed unit,
An airtight cover assembled to be disassembled by a plurality of pieces surrounding the workpiece;
An upper fixing module for tightly fixing the upper part of the sealing cover to one side of the workpiece;
A lower fixing module for tightly fixing the lower part of the sealing cover to the other side of the workpiece;
A nozzle mounting part installed on the piece and connected to the blasting nozzle of the blasting unit;
A discharge part installed on the piece to discharge the abrasive and dust after the blasting operation;
Blasting device.
The method according to claim 6,
The sealed cover,
Assembling the piece upper cover to form a rectangular bottleneck shape;
A cover ceiling extending inclined from the lower end of the cover;
A cover body part forming a rectangular bottle body shape at the bottom of the cover ceiling part;
It includes a cover skirt extending downward from each of the lower sides of the cover body portion
Blasting device.
The method according to claim 6,
The piece,
The groove portion is provided to have a sealing force and a coupling force at the portion to be mutually coupled between the pieces, the mounting means for mutual coupling between the pieces is provided in the groove portion
Blasting device.
The method according to claim 6,
Further comprising a shape fixing auxiliary bracket attached to the outwardly folded portion and the inwardly folded portion of the piece
Blasting device.
The method according to claim 6,
It further comprises a working view window provided on the piece to observe the inside of the sealed cover from the outside.
Blasting device.
The method of claim 7, wherein
The upper fixing module,
An airbag disposed along a circumference of an upper cover of the airtight cover;
A plurality of rings disposed along an outer surface of the airbag;
And an upper rope to fit the airbag to the workpiece according to the hook.
Blasting device.
The method of claim 7, wherein
The lower fixing module,
Mounting assembly of the disassembly-type square ring shape that is fitted or adhered to the edge of the stool top plate of the workpiece;
A lower rope for tightening and fixing the cover skirt of the sealing cover padded to the outer groove of the mount;
And a tightening lever screwed to the mount to press the edge of the edge of the stool top plate fitted into the inner groove of the mount.
Blasting device.
The method according to claim 6,
Further comprising a sealing jig for sealing the gap between the cover upper portion of the sealing cover and the workpiece.
Blasting device.
The method of claim 13,
The sealing jig,
A tube expanded upon filling of compressed air;
A pair of guide brackets disposed opposite to each other to maintain the shape of the tube and fixed to an inner surface of the tube;
A guide shaft coupled to the guide bracket so as to mutually guide the side portions of the tube corresponding to the fixed position of the guide bracket;
Jig handle coupled to one end of the guide shaft extending to the outside of the tube;
It includes an inlet for injecting compressed air into the inside of the tube
Blasting device.

Images