KR20170000538U

KR20170000538U - Blaster Having a Function with Wide Blast Pattern

Info

Publication number: KR20170000538U
Application number: KR2020150005158U
Authority: KR
Inventors: 이창훈; 정동근; 배한진; 윤원준; 전대우; 도병훈
Original assignee: 현대중공업 주식회사
Priority date: 2015-07-31
Filing date: 2015-07-31
Publication date: 2017-02-08

Abstract

It is possible to increase the spraying width while preventing the excessive amount of the abrasive material being injected from being concentrated at one point of the target by flowing the present invention nozzle and to solve the complication of replacement of the nozzle as well as replacing the blaster without disassembling An actuator having a drive shaft; A power transmission box including power transmission means for transmitting a driving force generated in the actuator; A hollow rotating body which takes a coupling structure drawn out from the power transmission box and receives rotation power from the power transmission means; A spray width enlarging means coupled to the one end of the hollow rotating body and connected to the nozzle so as to enlarge the spray width; A hose inlet formed in the power transmission box in a state of communicating with the hollow rotary body; The blaster is provided with an ejection width enlarging structure constituted by a plurality of blades.

Description

Blaster Having a Function of Wide Blast Pattern [

More particularly, the present invention relates to a blaster having a spray width enlarging function, more specifically, a method of mounting a nozzle in a tilted form and then expanding the spray width while preventing the abrasive material from being excessively concentrated to a point of the target In addition, when the nozzle is replaced, the replacement of the blaster can be performed quickly and easily without disassembling the blaster.

The hull block assembly process or block assembly has been completed to prevent the corrosion of the surface of the hull and paint work to ensure the beauty.

The blasting operation is a process in which various contaminants such as rust and dust adhered to the surface of a workpiece are painted beforehand by a strong abrasive material to blast the surface of the workpiece.

For reference, US20060276112 A1 (hereinafter referred to as " Patent Document 1 ") discloses a blaster used for performing the blasting operation as described above.

The power transmission system includes a motor that provides a driving force, a driving gear and a driving mechanism for transmitting the driving force of the motor, and a driving force transmitted through the power transmission system. A nozzle coupled to the rotary body, and an abrasive material conduit configured to transfer and supply the abrasive material toward the nozzle.

However, in Patent Document 1, the hose connection portion for connecting the abrasive material supply hose, the abrasive material conduit through which the abrasive material supplied from the abrasive material supply hose flows, and the rotating body for connecting the nozzle are structurally complicatedly coupled, An outer tubular body joined in a state and a tubular housing having a length, so that the blaster becomes large in size and heavy in weight.

If the size of the blaster increases and the weight becomes heavy, handling of the blaster during carrying and working may not be easy, so that the user may not be provided with the convenience of work, and there is a problem that the worker is difficult to work for a long time.

Particularly, in Patent Document 1, the rotating body to which the nozzle is coupled and fixed has a coupling structure in which the rotating body is received in the tube housing from the end portion of the tube housing. When the nozzle is to be replaced as needed, It is troublesome to disassemble not only the tube housing but also the coupling parts connected to the tube housing, and it is troublesome to reassemble the nozzle after replacement of the nozzle.

Further, as described above, the structure in which the rotating body to which the nozzles are coupled and fixed is disposed at a depth from one end of the tube housing toward the other end, so that there is a limit in the angle of spray for expanding the spray width. There is a problem that the spray width increasing function is difficult to exhibit properly.

As described above, the spray width expanding function is difficult to exhibit properly, so that the abrasive material is unnecessarily concentrated at one point of the target. In addition, the workability can not be improved and the working time can not be shortened. In order to solve this problem, it is possible to enlarge the spray width by enlarging the diameter of the tube housing accommodating the rotatable nozzle. However, if the diameter of the tube housing becomes large, It is not easy to work, and the weight is also getting heavier.

US Patent Publication No. US20060276112 A1

In order to solve the problem presented in the background art, the present invention is a method of mounting a nozzle in a tilted manner on a blaster and then flowing, thereby preventing an abrasive material from being excessively concentrated to a target point, And to provide a blaster having a spray width enlarging structure that can be quickly and easily replaced without disassembling the blaster when the nozzle is replaced.

The present invention relates to an actuator having a drive shaft; A power transmission box including power transmission means for transmitting a driving force generated in the actuator; A hollow rotating body which takes a coupling structure drawn out from the power transmission box and receives rotation power from the power transmission means; A spray width enlarging means coupled to the one end of the hollow rotating body and connected to the nozzle so as to enlarge the spray width; A hose inlet formed in the power transmission box in a state of communicating with the hollow rotary body; The blaster is provided with an ejection width enlarging structure constituted by a plurality of blades.

The power transmission means includes a drive gear coupled to a drive shaft of the actuator, and a rotary gear coupled to the hollow rotary member and engaged with the drive gear.

The injection width expanding means includes a hollow engaging portion coupled to an end portion of the hollow rotary body and a hollow rotary changing portion coupled to a front surface of the hollow engaging portion, A part of the inner surface portion of the inner surface portion is formed in an inclined structure from the inner tip end toward the outer tip end of the inner surface portion, thereby providing a blaster having the spray width enlarging structure.

In addition, the hollow rotating body drawn out from the power transmission box is coupled with a packing to surround the outer periphery of the hollow rotating body, and the packing is embedded in the power transmission box. Blaster is provided.

When the blaster having the enlarged spray width according to the present invention is used, the blaster size can be minimized and the weight can be reduced, thereby improving the handling and workability. In addition, the blaster can be structurally simple, Can be expected.

In addition, when the blaster having the enlarged injection width according to the present invention is used, the nozzle is partially drawn out, and the nozzle can be taken out through the hose entry opening of the power transmission gear box. It is possible to replace the blaster without disassembling the blaster and to solve the problem of disassembly and reassembly.

In addition, when the blaster having the spray width enlarging structure according to the present invention is used, the nozzle is drawn out, and the angle of inclination with respect to the nozzle coupling hole of the rotary variable portion is adjusted to unnecessarily concentrate the abrasive to one point It is possible to expect an effect of shortening the working time owing to the enlargement of the injection area.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a blaster having a spray width enlarging structure according to the present invention as viewed from the front; FIG.
FIG. 2 is a combined perspective view of FIG. 1. FIG.
Fig. 3 is a sectional view showing Fig. 2. Fig.

Hereinafter, a preferred embodiment of a blaster having a spray width enlarging structure according to the present invention will be described in detail.

1 to 3, the blaster 10 includes an actuator 14 having a driving shaft 12, a driving shaft 14 having a driving shaft 12, A power transmission box 18 including a power transmission means 16 for transmitting a driving force generated by the actuator 14 and a coupling structure for drawing out the power transmission box 18, The hollow rotor 20 is connected to the end portion of the hollow rotor 20 to increase the spray width of the abrasive to expand the spray width of the abrasive. And a hose inlet 24 connected to the power transmission box 18 in a structure that communicates with the hollow rotary body 20.

Specifically, the actuator 14 is preferably a motor provided with a driving shaft 12, but it is not necessarily limited to a motor, and any actuator 14 can be applied freely if it can generate rotational driving force. Do.

The actuator 14 is mounted and fixed to the rear of the power transmission box 18. The driving shaft 12 is coupled to the power transmission box 18 so as to be accommodated.

The power transmission unit 16 is connected to the drive shaft 12 and the hollow rotary body 20 rotatably coupled to the power transmission box 18 so as to transmit power. The power transmission means 16 includes a drive gear 26 coupled to the drive shaft 12 and a rotary gear 28 coupled to one end of the hollow rotor 20, And the rotary gear 28 are engaged with each other.

A portion of the hollow rotating body 20 which is drawn out from the power transmission box 18 is provided with a packing P which is coupled in a state of wrapping around the outer periphery of the hollow rotating body 20, So that external dust, dust, foreign matter, and the like are prevented from entering the inside of the power transmission box 18.

Accordingly, when the actuator 14 is driven, the driving force is transmitted to the driving gear 26 through the driving shaft 12, and the driving gear 26 rotates the rotating gear 28, The rotating body 20 is rotated.

The injection width expanding means 22 includes a hollow engaging portion 30 coupled to an end of the hollow rotating body 20 to be interlocked with the hollow engaging portion 30, (32).

3, the nozzle coupling hole 34 is formed in a hollow structure in the hollow rotary variable portion 32. At this time, the nozzle coupling hole 34 is formed in the inner side And has an inclined structure having a downward inclination angle (?) From the tip toward the outer tip direction, and the injection angle increasing means (22) is changed in accordance with the working conditions to adjust the injection angle.

In the drawing, reference numeral 42 denotes a lid for guiding a finishing function of the front face of the jet width increasing means 22 and a position where the bearing B is engaged.

2 and 3, a nozzle 38 is coupled and fixed to an end of a blasting hose 36 for transferring and feeding an abrasive material, and a power transmission box (not shown) 18 of the blasting hose 36 through the hose inlet 24 of the blasting hose 36. [

At this time, the boundary region where the blasting hose 36 and the nozzle 38 are connected is disposed in the nozzle coupling hole 34 of the jet width expanding means 2, and the nozzle 38 is connected to the nozzle coupling hole 34 So as to be drawn out.

When the blasting hose 36 enters the state as described above, the blasting hose 36 is clamped using a clamp 40 provided at the hose inlet 24. This securing prevents the blasting hose 36 from arbitrarily attempting to move in the forward or backward direction during the blasting operation.

When the mounting of the blasting hose 36 to the blaster 10 is completed, the abrasive material supply device (not shown) is driven to transfer and supply the abrasive material to the blasting hose 36.

At the same time, the actuator 14 of the blaster 10 is driven to rotate the hollow rotor 20 and the jet width expanding means 22 by the driving force of the actuator 14.

The area where the blast hose 36 and the nozzle 38 are connected to each other is disposed in the nozzle coupling hole 34 of the jet width expanding means 22. As a result, When the nozzle width expanding means 22 is rotated in a state where the nozzle width increasing means 22 is positioned in a predetermined position, the nozzle fitting hole 34 is inclined at a downward inclination angle? From the inner tip toward the outer tip with respect to the center line S, The nozzle 38 is automatically moved in the upward, downward, leftward, and rightward directions by the inclination angle [theta] of the nozzle coupling hole 34. [

In other words, the nozzle 28 positioned in place can be moved upward, downward, leftward and rightward by the inclination angle? Of the nozzle coupling hole 34, thereby enlarging the spraying width.

On the other hand, when the nozzle 38 is replaced, as described above, the nozzle 38 is arranged in an exposing structure in which the nozzle 38 is partly drawn out from the jet width expanding means 22, so that the nozzle 38 can be instantly replaced. Alternatively, after the clamp 40 is released, the blasting hose 36 can be removed from the hose entry opening 24 and the nozzle 38 can be replaced.

Therefore, when the blaster having the spray width enlarging structure according to the present invention is used, the hose connecting portion for connecting the abrasive supply hose and the abrasive supplied from the abrasive supply hose flow to the nozzle as in Patent Document 1, The size of the blaster can be minimized since many components such as abrasive conduit, abrasive material conduit, rotating body connecting the nozzle to the nozzle, outer tubular body surrounding the outer surface of the conduit, tube housing having a length, It will also lighten the weight.

Further, as described above, the nozzle is partially drawn out, and the nozzle can be easily taken out through the hose entry opening of the power transmission gear box. Thus, as in Patent Document 1, the blaster can be replaced without exposing it So that it is possible to eliminate the troubles associated with disassembly and reassembly.

Further, even if the nozzle is partially drawn out as described above and the angle of inclination with respect to the nozzle coupling hole of the rotary variable portion is made larger, the restriction on the injection width is not structurally generated as in Patent Document 1, As a result, it is possible to prevent unnecessary concentration of the abrasive to one point, and to shorten the working time due to the increase of the spray area.

While the preferred embodiments of the present invention have been described above, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Accordingly, variations and modifications of the embodiments of the present invention will not depart from the technical scope of the present invention.

10: Blaster 12: Drive shaft
14: Actuator 16: Power transmission means
18: Power transmission box 20: Hollow type rotating body
22: Spray width expanding means 24: Hose inlet
26: drive gear 28: rotary gear
30: hollow coupling portion 32: injection width expanding means
26: drive gear 28: rotary gear
30: hollow coupling portion 32: hollow rotation varying portion
34: nozzle coupling hole 36: blasting hose
38: nozzle 40: clamp
42: Cover

Claims

An actuator (14) having a drive shaft (12);
A power transmission box (18) including a power transmission means (16) for transmitting a driving force generated in the actuator (14);
A hollow rotating body 20 which takes a coupling structure drawn out from the power transmission box 18 and receives power from the power transmission means 16 to rotate;
A spray width expanding means (22) coupled to one end of the hollow rotary body (20) and connected to the nozzle (38) to expand the spray width;
And a hose entry opening (24) formed in the power transmission box (18) in a state of communicating with the hollow rotary body (20).

The method of claim 1, wherein
The power transmitting means 16 includes a driving gear 26 coupled to the driving shaft 12 of the actuator 14 and a rotary gear 28 coupled to the hollow rotary member 20 and engaged with the driving gear 26. [ Wherein the blasting width is larger than the blasting width.

3. The method according to claim 1 or 2,
The jet width expanding means 22 includes a hollow engaging portion 30 coupled to an end portion of the hollow rotating body 20 and a hollow rotary changing portion 32 having a nozzle engaging hole 34 formed in a hollow structure ),
Wherein the nozzle coupling hole (34) is formed in an inclined structure having a downward inclination angle (?) From the inner tip toward the outer tip direction with respect to the center line (S) of the nozzle coupling hole (34) A blaster having a widening structure.

4. The method according to any one of claims 1 to 3,
A packing P is coupled to the hollow rotating body 20 drawn from the power transmission box 18 so as to surround the outer periphery of the hollow rotating body 20, (18). The blaster according to any one of claims 1 to 5,