KR20110044074A - A blastlng mechine - Google Patents

Abstract

PURPOSE: A blasting machine is provided to efficiently grind a curved surface and a flat metal surface and attach a coating material to uniform thickness on the grinded surface. CONSTITUTION: A blasting machine comprises a case(2), a blast body(4), scale removing units(6), a motor box(8), and a connection unit(10). The case has an air supply port(2a) on an end thereof and a dust collecting port(2b) on the other to discharge scale separated from the surface of a work piece(100). The blast body is formed with blades at regular intervals. The scale removing units are installed on the exterior of the blast body and contact the surface of the work piece to separate scale from the work piece and scratch the work piece surface. The motor box rotates the blast body in a specific direction. The connection unit connects the motor box and the blast body.

Description

Blasting equipment {A blastlng mechine}

The present invention relates to a blasting apparatus for removing the foreign matter attached to the solid surface or solid scale such as concrete or metal plate grown by rust or foreign matters generated on the inner surface of the old pipe, more specifically, not only flat In addition, the present invention relates to a blasting apparatus for efficiently removing foreign substances on the surface of a pipeline and forming surface scratches uniformly so that the coating material is firmly attached during painting.

In general, pipes used for water supply, drainage, hot water supply, cooling / heating, gas transportation, etc., have rust generated inside or increase the scale of use due to the accumulation of foreign matters. Such a scale in the pipe not only lowers the transport capacity of the fluid, but also causes an unsanitary problem in the case of a water pipe, so it is necessary to replace or repair a new one at an appropriate time.

A blasting machine is used for the purpose of removing the scale in the pipe. The blasting machine is, for example, a device for performing a peeling or peeling of the coating to newly paint the outer surface of the construction structure, the iron vehicle, the outer surface of the ship, such as grit (grit), iron piece Blast materials such as shot, silica sand, slag powder, garnet sand, etc. are discharged together with compressed air to cleanly remove foreign substances on the plane or scales grown in the pipe, and then paint on the surface of the structure. It is mainly used in the pretreatment work to be able to perform, and in recent years is also used as a pretreatment work of painting to polish the fine scale after removing the solid scale in the renovation of non-excavated old pipe.

As a blasting machine according to the prior art for customizing old pipes, a product released by Air Blast ( www.airblast.com) has been proposed. As shown in Figure 1, and the main body frame 102 is provided with a wheel 104 for traveling the pipeline 100; A first motor (106) for providing a driving force to the wheel (104); A center stand 108 mounted upright on the main body frame 102 to adjust a center of the center; A rotary head (110) installed on the center stand (108) in a transverse direction and positioned at the center of the conduit and having a hose connector (112) for supplying a blast material to a rear end thereof; A rotary head rotating device 114 including a driving motor and a rotating belt for rotating the rotary head 110; It is installed on the front end of the rotary head 110 via the T-connector 115, and includes a blast nozzle 116 to perform the polishing of the pipeline by ejecting the abrasive in the radial direction of the pipeline while rotating.

On the other hand, the structure which can collect | recover a blast material in the conventional air blast machine is proposed by the clamco.co of the Netherlands. It has a tubular blast body 202 for feeding the abrasive as shown in Figure 2; A supply nozzle 204 installed at a lower end of the blast body 202 to supply a blast material; A nozzle holder 206 mounted on an upper end of the blast body 202; A brush 208 installed around the supply nozzle 204 to prevent separation of the blast material; One end is branched upward from the outer surface of the blast body 202, the other end has a double pipe structure located outside the supply nozzle 204 to recover the blast material ejected from the supply nozzle 204 (208); And a handle 210 installed on the blast body 202.

The air blast machine having the above-described configuration is a structure in which the blast material is recovered by suction force provided to the recovery pipe 208 from the outside after being blown straight down to perform polishing.

The above structure is a structure in which a worker manually grinds and has not been applied to a pipe line, and has a double pipe line in which a recovery pipe 208 is installed outside of the supply nozzle 204 connected to the blast body 202. There was a problem that the recovery rate of the blast material after being ejected to the pipeline surface was not good.

In particular, the conventional blasting machine presented above is necessary for the blasting material to remove the scale of the conduit surface, but since the scale detached from the conduit surface is collected in the mixed state of the blasting material, The work requires a step of separating the blast material and the scale, and also has a problem that the recovery rate of the blast material is poor in the blast material separation process. In addition, the blasting apparatus of the above structure has a structure in which the nozzle bar is not stretched, whereas, in the underground pipeline, there are a plurality of pipelines that are deformed like elliptical or crushed tubes, not gardens. Therefore, the conventional blasting apparatus is difficult to pass through the deformation pipe by the non-expandable nozzle bar, and even though the deformation pipe passes through the deformation pipe, the blast material sprayed through the nozzle bar is different, and thus it is impossible to implement uniform polishing. There is a problem.

In addition, since the introduced air (air) supplied from the compressor to strike the blasting material on the pipe surface is constant, if it is longer than a predetermined distance (typically 30 to 70m), the air (air) amount and air (air) pressure are increased. In addition, the air introduced from the compressor is increased, and even if a large amount of blast material is supplied, the blast materials do not collide with each other to be efficiently polished or grounded, and a large amount of blast material is consumed. have.

In particular, the conventional blasting apparatus requires a blasting material to polish the surface of the workpiece, and a compressor and a feeding tank for pressurizing the blasting material, a cyclone dust collector for recovering the abrasive, a separating device for separating the blasting material and scale Since it is to be provided, there is a complicated configuration.

Accordingly, the present invention has been proposed to solve the above problems, and the rotation of the scratch bite without the need of a separate blast material, and an air compressor, a pressure feed tank, etc. for ejecting the blast material to the surface of the workpiece And it is an object of the present invention to provide a blasting apparatus capable of performing the revolving drive to efficiently perform surface polishing of curved surfaces such as pipes and metal flat plate.

In addition, the present invention is stretched and driven in accordance with the change in the diameter of the pipe, and uniformly formed scratches on the surface of the workpiece to ensure that the coating material according to the subsequent painting process to be firmly attached to a uniform thickness Another object is to provide a device.

In order to achieve the above object, the present invention, the air supply port is formed on one side, the other side is formed a dust collecting port for discharging dust including a scale detached from the workpiece surface; A blast body which is located in the inner space of the case and rotates and is provided with the wing portion extending at an isometric angle on the outer surface; At least one or more scales disposed on an outer surface of the blast body, the scale removing means forming a scratch on the workpiece while the distal end is in close contact with the surface of the workpiece to detach the scale formed on the workpiece; A motor box installed on an upper portion of the blast body and rotating the blast body in a forward or reverse direction; A connection end connecting the motor box and the blast body; And a self-propelled moving device for moving the case forward by allowing the motor box and the case to be positioned at the center thereof.

The present invention is characterized in that the blast body is rotated and revolved to remove the scale further comprising a revolving drive member connected to the motor box and the case to revolve the blast body.

The wing portion of the blast body is characterized in that one surface is formed to be inclined with respect to the vertical line.

The scale removing means is mounted to the side of the blast body, the buffer member is bent buffered in correspondence with the rotation direction of the blast body; And a scratch bite provided on one surface of the buffer member, the tip being in close contact with the workpiece to detach the scale and to form a scratch on the surface of the workpiece.

The connecting means includes a first member in which a groove is formed in the center portion so that the shaft protruding from the motor box is fitted; A stepped member formed on an outer surface of the first member and having a through hole vertically formed at intervals and a groove formed on a bottom surface thereof; And a first fixing bolt penetrating the blast body through the through hole of the step member.

In addition, the buffer spring is inserted into the groove of the step member, the buffer spring for the buffer operation in response to the lifting and lowering of the blast body generated when the blast body to ride over the uneven portion of the workpiece; And a ball bearing installed on an outer surface of the first fixing bolt and providing a slip force so that the blast body is lifted from the first fixing bolt in response to the buffering operation of the buffer spring.

As described above, the present invention has the following effects.

First, in the conventional blasting apparatus, a blast material such as grit, shot of iron pieces, silica sand, slag powder, garnet sand, etc. is sprayed on the surface of a pipe line or a workpiece such as a metal plate to scale In the present invention, a separate blasting material is formed because a scratch bite is attached to the blast body and the rotating and revolving force detaches the scale of the conduit surface and forms a surface scratch. Not only is it unnecessary, there is no need for an air compressor, a pressure feed tank, a blast material separator or the like for ejecting the blast material onto the surface of the workpiece.

Second, by removing the scale attached to the surface of the workpiece such as the pipe or the metal plate while forming the surface scratches while the blast body is rotating and rotating, not only the surface of the metal plate but also the surface of the curved surface such as the pipe can be polished. The efficiency can be improved.

Third, the change in the diameter of the pipe buried in the underground blast body (pipe), that is, in the case of the pipe can pass through the deformed pipe, such as an elliptical or crushed pipe instead of a garden, and can be uniformly processed in an ellipse form By forming a scratch on the surface, it is possible to form a uniform and firm coating on the workpiece during the subsequent painting process.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6.

When the blasting apparatus according to the present invention passes through the workpieces such as straight pipes, curved pipes, deformed pipes with different pipe diameters in addition to the metal plate, and flexibly passes through the stretching operation, and reliably removes the scale present on the surface of the workpieces. At the same time, by forming a uniform scratch, the coating is implemented to be uniformly and firmly attached during the subsequent painting work.

Figure 3 is a schematic diagram showing the overall configuration of the blasting apparatus according to the present invention, Figure 4 is a schematic diagram showing the configuration excluding the moving member in the blasting apparatus of the present invention, Figure 5 shows the configuration of the blast body which is the main part of the present invention Figure 6 is a front view and a side view, Figure 6 is a perspective view of the scale removal means is mounted on the blast body which is the main part of the present invention.

First, prior to describing an embodiment of the present invention, the workpiece to be polished is collectively referred to as a term including both concrete, flat plate, straight pipe, or curved pipe. However, in a preferred embodiment of the present invention, the workpiece is referred to as a pipeline.

As shown in the drawing, the air supply port (2a) is formed on one side, the other side for discharging dust containing a scale detached from the workpiece 100 surface to the dust collecting tank (not shown) A case 2 in which a dust collector 2b is formed; It includes a plurality of first through holes (4a) and the first fitting groove (4b) formed between the first through hole (4a) and the wing portion (4c) isometrically extended on the outer surface formed on the upper surface, A blast body (4) positioned in the inner space of the case (2) and rotating in a forward or reverse direction; It is mounted on the wing side of the blast body 4, the front end is in close contact with the workpiece 100 to remove the scale formed on the surface of the workpiece 100 to remove the scale to form a scratch on the workpiece 100 Means 6; A motor box (8) installed at an upper portion of the blast body (4) and rotating the blast body (4) in a forward direction by a required rotational speed (R.P.M); And connecting means 10 for connecting between the motor box 8 and the blast body (4); An idle driving member 12 installed on the motor box 8 to revolve the case 2, the blast body 4, and the entire motor box 8 along the circumferential surface of the conduit; A motor box (8) and a case (2) are located at the center thereof, an idle driving member (12) is connected to the upper surface, and a self propellered moving device (14) for moving the case (2); And a blocking member 16 mounted on an outer surface of the case 2 and blocking a detached scale from being detached from the case because the tip is close to the surface of the workpiece 100. Here, the blocking member 16 is composed of a brush.

In the embodiment of the present invention, the wing portion 4c of the blast body 4 is processed to be inclined by a predetermined angle with respect to the vertical line. Preferably, the wing 4c has a slope of 15 ° to 20 °. This makes it possible to ride more flexibly when the scratch bite of the scale removing means 6 to be described later goes over the scale formed on the surface of the deformed conduit or the workpiece.

The scale removing means (6) is mounted on the side of the wing portion (4c) of the blast body 4 via the bolt 21, the buffer plate 22 that is buffered in correspondence with the forward direction of the blast body (4) (22) )and; A support plate 24 mounted on one side of the buffer plate 22 via a bolt; And a scratch bite 26 fitted to the lower center portion of the support plate 24, the tip being in close contact with the workpiece to detach the scale formed on the workpiece 100, and to form a scratch on the surface of the workpiece. The scratch bite 26 is attached to the artificial diamond tip.

In the embodiment of the present invention, the buffer plate 22 is made of any one of a rubber plate or a leaf spring. Accordingly, when the workpiece 100 is made of a deformed pipeline such as an oval or crushed tube instead of a garden, when the scratch bite 26 passes through the deformed pipeline, in addition to the angle of the inclined wing 4c The buffer plate 22 is bent to allow a smooth passage.

The connecting means (10) comprises a first member (32) having a hole (32a) in the center portion so that the shaft (8a) protruding from the motor box (8); A second through hole 34a formed at an outer surface of the first member 32 and vertically formed at a position corresponding to the first through hole 4a of the blast body 4, and the fitting groove 4b. And a stepped member 34 having a second fitting groove 34b formed in the bottom surface corresponding thereto; A first fixing bolt 36 fixed through the first through hole 4a of the blast body 4 and the second through hole 34a of the step member 34; It is fitted between the first fitting groove 4b of the blast body 4 and the second fitting groove 34b of the step member 34 corresponding thereto, and performs cushioning operation in response to the lifting and lowering of the blast body 4. Buffer spring 38; And installed on an outer surface of the first fixing bolt 36 to provide a slip force so that the blast body 4 is lifted from the first fixing bolt 36 in response to the buffering operation of the shock absorbing spring 38. And a ball bearing ring 40.

The self-propelled moving device (14) includes a first frame (17) mounted on the case (2) and coupled to an idle drive member (12); A moving wheel 18 installed at a lower end of the first frame 17; And a motor (not shown) for providing a rotational force to the moving wheel 18.

The idle driving member 12 is installed on the motor box (8) and the second frame 52 and spaced apart from the first frame (17); An orbital rotation transmission device (54) having an orbital shaft (54a) installed perpendicularly to a central portion of the second frame (52) and decelerating an orbital rotation speed to transfer an electric power to the case (2); An idle motor 56 having a driven gear 56a and a prime mover 56b to provide rotational force to the idle rotation transmission device 54; And an arm 58 connected to the driven gear 56a of the idle motor 56 and functioning as an idle axis.

The operating state of the present invention configured as described above will be described with reference to FIG.

As shown in the figure, when the case 2 is placed on the workpiece 100, the tip of the scratch bite 26 comes into contact with the surface of the workpiece 100. When the motor box 8 is driven, rotation through the shaft 8a of the motor is transmitted to the blast body 4 connected through the first member 32 and the first fixing bolt 36. Accordingly, the scratch bite 26 mounted on the wing portion 4c of the blast body 4 rotates to detach and remove the scale of the workpiece, and scratches are formed on the surface of the workpiece 100. At this time, the scale detached by the brush 16 provided on the outer surface of the case 2 is prevented from being separated out of the case. In addition, the air is introduced into the case 2 from the outside through the air supply port 2a of the case 2 and the scale detached through the dust collecting port 2b is discharged and collected in the external dust collecting tank.

As the scale is removed through the above process, the self-propelled moving device 14 is driven and moved forward to remove the scale of the workpiece 100 and to form a scratch on the surface.

When the scratch bite 26 moves while rotating, when passing through the workpiece 100 formed of an elliptical or crushed deformation pipe, the buffer plate 22 obliquely mounted on the inclined surface of the wing portion 4c is rotated in the opposite direction of rotation. It is elastically bent, and the blast body 4 is raised. Position displacement according to the rise of the blast body (4) is accommodated while the shock absorbing spring 38 is contracted, and the ball bearing 40 installed on the outer surface of the first fixing bolt 36 by the amount of shrinkage of the shock absorbing spring 38 As the blast body 4 rises as it slips, the blast body 4 flexes over the workpiece 100 as a deformation conduit. During the process, the idle provided through the idle drive member 12 is transmitted to the first frame 17 of the self-propelled mobile device 14 so that the case 2 together with the blast body 4 of the workpiece 100 Orbit along the circumference.

As described above, the blast body 4 rotates by the revolution provided by the orbital driving member 12 and the rotation provided from the motor box 8, thereby removing the scale of the conduit surface.

The present invention described above is not limited to the blasting apparatus, and various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention, which will be apparent to those skilled in the art. will be.

1 is a front view and a side view schematically showing the configuration of an air blast according to the prior art;

2 is another illustration of a blasting apparatus according to the prior art,

3 is a schematic view showing the overall configuration of a blasting apparatus according to the present invention;

Figure 4 is a schematic view showing the configuration excluding the moving member in the blasting apparatus of the present invention,

5 is a front view and a side view showing the configuration of the blast body which is the main part of the present invention;

Figure 6 is a perspective view of the scale removal means is mounted on the blast body which is the main part of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

2: case 4: blast body

6: descaling means 8: motor box

10: connecting means 12: idle drive member

14: self-propelled mover 16: brush

100: Workpiece

Claims (12)

An air supply port is formed at one side, and a case at which the dust collecting port for discharging dust including a scale detached from the workpiece surface is formed; A blast body which is located in the inner space of the case and rotates and is provided with the wing portion extending at an isometric angle on the outer surface; At least one or more scales disposed on an outer surface of the blast body, the scale removing means forming a scratch on the workpiece while the distal end is in close contact with the surface of the workpiece to detach the scale formed on the workpiece; A motor box installed at an upper portion of the blast body and rotating the blast body in one direction; And Connection means for connecting between the motor box and the blast body Blasting apparatus comprising a. The method of claim 1, The blasting apparatus is installed on the motor box further comprises an idle drive member for revolving the case and the blast body. The method according to claim 1 or 2, The blasting device of the blast body, characterized in that one surface is formed inclined with respect to the vertical line. The method of claim 1, The scale removing means A shock absorbing member mounted to a side of the blast body, the buffer member being buffered in correspondence with the rotational direction of the blast body; And The blasting apparatus is installed on one surface of the buffer member, the front end is in close contact with the workpiece to remove the scale and comprises a scratch bite to form a scratch on the surface of the workpiece. The method of claim 4, wherein Blasting device, characterized in that the artificial diamond tip is attached to the scratch bite. The method of claim 4, wherein The blasting apparatus, characterized in that the buffer member is made of any one of a rubber plate or a leaf spring. The method according to claim 1 or 2, The connecting means A first member in which a groove is formed in the center portion so that the shaft protruding from the motor box is fitted; A stepped member formed on an outer surface of the first member and having a through hole vertically formed at intervals and a groove formed on a bottom surface thereof; And First fixing bolt penetrating the blast body through the through hole of the step member Blasting device comprising a. The method of claim 7, wherein A cushioning spring inserted into a groove of the step member and configured to buffer the blast body in response to the lifting and lowering of the blast body generated when the blast body rides over the uneven portion of the workpiece; And Ball bearing is installed on the outer surface of the first fixing bolt, and provides a slip force to lift the blast body from the first fixing bolt in response to the buffering operation of the shock absorbing spring Blasting device further comprising. The method according to claim 1 or 2, And a blocking member mounted on an outer surface of the case and preventing a detached scale from being separated out of the case by distal to the surface of the workpiece. The method according to claim 1 or 2, The blasting apparatus is located in the center of the motor box and the case, further comprising a self-propelled moving device for moving the case forward. 11. The method of claim 10, The self-propelled mobile device A first frame for mounting the case; A moving wheel installed at a lower end of the first frame; And A motor providing rotational force to the moving wheel Blasting device comprising a. The method of claim 2, The idle driving member A second frame installed at an upper portion of the motor box; An idle rotation transmission device having an idle shaft installed vertically in the center of the second frame and transmitting an idle power to the case by reducing an idle revolution speed; An idle motor provided with a driven gear and a motive gear to provide rotational force to the idle rotation transmission device; And An arm connected to the driven gear of the idle motor and functioning as an idle axis; Blasting apparatus comprising a.

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