KR100784464B1 - Apparatus for rotating a jet nozzle of water jet system - Google Patents

Abstract

A device for rotating a jet nozzle of a water jet system is provided to prevent the leakage of water by forming a water screen in a simple structure and to combine a high-pressure water supply hose stably. In a device for rotating a jet nozzle of a water jet system, a rotary driving unit(10) is composed of: a housing(11); a motor(12) installed on the upside of the housing; a driving gear combined with the motor in the housing; and a speed reducing gear disposed in the housing and engaged with the driving gear. A rotary shaft(20) is vertically installed in the center of the speed reducing gear, rotatably combined with the housing, and equipped with a vertical water feed passage. A hose combining unit(30) is mounted on the upside of the housing correspondently to the upper end of the rotary shaft and vertically joined with a supply hose feeding the high-pressure water, on the upper surface. A watertightness inducing unit is assembled to the hose combining unit to move the high-pressure water fed through the supply hose, to the water feed passage without leakage. A nozzle combining unit(50) is installed at the lower end of the rotary shaft to support the lower end of the watertightness inducing unit and equipped with the jet nozzle at the lower side.

Description

Apparatus for rotating a jet nozzle of water jet system

1 is a front view of the present invention,

2 is a sectional front view of the main part of the present invention;

3 is an enlarged view illustrating main parts of FIG. 2;

4 is an enlarged view of a portion A according to FIG. 3;

5 is a perspective view of a conventional waterjet system,

6 is a front view showing a conventional rotating device,

7 is a schematic sectional front sectional view showing a conventional rotating device.

* Explanation of symbols for the main parts of the drawings

10: rotating drive part

   11 housing 12 motor

   13: Drive Gear 14: Reduction Gear

20: rotation axis

   21: water supply

30: hose coupling part

   31: hose coupling body 32: hose coupling groove

   33: through hole

40: watertight guide part

   41: guide tube 42: meningococcal forming tube

50: nozzle coupling part

   51: nozzle coupling body 52: nozzle coupling groove

   53: through hole 54: watertight packing

The present invention relates to a jet nozzle rotating apparatus of a water jet system for rotating the jet nozzle in a water jet system, and more particularly, to prevent the leakage of water and to prevent packing due to high pressure water while preventing the leakage of water without having a separate packing. The present invention relates to a jet nozzle rotating device of a waterjet system to smoothly prevent a delay in working time due to replacement.

In general, a water jet system refers to a system that breaks down and removes a wall surface of a road or structure that requires repair with ultra high pressure water.

Such a waterjet system includes a power pack for applying ultra high pressure to water, an attachment for performing a direct chipping operation, that is, a crushing operation, on a repair surface by receiving the ultra high pressure water from the power pack, It is composed of a transport robot (robot) to attach and move the attachment.

As shown in Figure 5, the attachment (A) is moved by the transport robot (R), the lower side by the rotary device 200 coupled in a state capable of linear reciprocating movement along the guide 100 As the injection nozzle 300 is rotated, the ultra high pressure water is sprayed on the water-repair surface to be crushed.

As shown in FIGS. 6 and 7, the rotating device 200 includes a housing 201a and a motor 201b mounted on an upper surface of the housing 201a and the motor 201b inside the housing 201a. In the center of the rotary drive unit 201 and the reduction gear 201d having a drive gear (201c) coupled to the inside and the reduction gear 201d engaged with the drive gear (201c) into the housing 201a. A rotating shaft 202 mounted vertically, rotatably coupled to the housing 201 a, having a vertical water supply passage 202 a at the center, and having a nozzle coupling groove 202 b at the bottom thereof; and an upper end of the rotating shaft 202. Hose coupling body having a coupling pipe 203 is coupled to the hose coupling groove 204a is rotatably coupled to the upper end of the connection pipe 203 and the supply hose (H) is supplied with a high-pressure water horizontally at the top 204.

In addition, a packing 205 is provided at the coupling portion between the upper end of the connection pipe 203 and the lower end of the hose coupling body 204 to prevent leakage of water.

In the conventional rotary device 200 configured as described above, the reduction gear 201d engaged with the driving gear 201c is rotated while the driving gear 201c is rotated by the driving of the motor 201b, and the rotation of the reduction gear 201d is rotated. As the rotating shaft 202 is rotated to rotate the injection nozzle 300 mounted on the lower end of the rotating shaft 202.

As such, the high pressure water supplied through the supply hose H in the state in which the injection nozzle 300 is rotated passes through the hose coupling body 204 and downwards through the water supply passage of the rotating shaft 202 through the connecting pipe 203. While flowing to the outside is sprayed to the outside through the injection nozzle 300 coupled to the lower end of the rotating shaft 202.

However, the above conventional technology has the following problems.

The high pressure water supplied through the high pressure hose adds a strong external force to the packing provided between the upper end of the connection pipe and the lower end of the hose coupling body, and thus the packing is easily broken or damaged by the high pressure water. There is a problem.

Since leakage occurs due to breakage and damage of the packing, frequent replacement of the packing is caused, and frequent replacement of the packing is a factor that delays the grinding work time of the repair surface.

In addition, when water is supplied through the high pressure hose, the high pressure hose itself has a considerable load by the water, and thus the connection portion between the upper end of the rotating shaft and the lower end of the connecting pipe is loaded by the high pressure hose supplying water. There is a problem that is easily broken.

Accordingly, the present invention has been made to solve the conventional problems as described above,

SUMMARY OF THE INVENTION An object of the present invention is to provide a spray nozzle rotating device of a waterjet system, which prevents leakage of water without high packing and prevents delay of working time due to packing damage caused by high pressure water and replacement of the packing. Is in.

In addition, another object of the present invention is to provide a spray nozzle rotating apparatus of a waterjet system to form a water film with a simple structure to prevent the leakage of water to be smooth and stable.

In addition, another object of the present invention is to simplify the injection of the supply hose is supplied with a high pressure water in a simple structure while at the same time spraying the waterjet system to prevent the damage to the coupling site and the air attack hose by the weight of the supply lake In providing a nozzle rotating device.

In addition, another object of the present invention is a waterjet system having a simple nozzle structure coupled to the nozzle to ensure that the combination of the injection nozzle is made stable and at the same time stable supply of high pressure water toward the injection nozzle through the nozzle coupling portion in a state of preventing leakage To provide a spray nozzle rotation apparatus of the.

In order to achieve the object of the present invention as described above, the jet nozzle rotating apparatus of the waterjet system according to a preferred embodiment of the present invention is a housing, a motor mounted on the upper surface of the housing, and coupled to the motor inside the housing; A rotating drive unit having a driving gear and a reduction gear meshing with the driving gear inside the housing; A rotating shaft mounted vertically to the center of the reduction gear, rotatably coupled to the housing, and having a water supply path perpendicular to the center; A hose coupling part mounted on an upper surface of the housing to correspond to an upper end of the rotating shaft and vertically coupled with a supply hose to which high pressure water is supplied; A watertight induction part configured to guide the high pressure water supplied through the supply hose to the water supply passage while being assembled to the hose coupling part; A nozzle coupling part mounted at a lower end of the rotary shaft to support a lower end of the watertight guide part and having a spray nozzle mounted on a lower surface thereof; It is characterized by including.

In addition, the watertight guide portion is formed with an insertion portion around an outer circumferential surface inserted into the water supply passage having a locking jaw at the upper end so that the upper end is caught in the hose coupling portion, the induction pipe inserted into the water supply passage, and the nozzle coupling And a water film forming tube which is inserted from the lower end of the rotary shaft to the upper side in a state supported by the unit and is inserted in a state in which leakage is prevented between the inner circumferential surface of the water supply passage and the insertion unit to form a water film.

The induction pipe may further include a water receiving groove formed on an outer circumferential surface of the induction pipe in which the insertion part is positioned so that water that is raised between the inner circumferential surface of the water film forming tube and the outer circumferential surface of the induction pipe is received. It is done.

In addition, the water film forming tube, characterized in that it further comprises a support jaw formed around the lower end of the water film forming tube to be supported in contact with the upper surface of the nozzle coupling portion while being caught on the lower end of the rotating shaft.

In addition, the hose coupling portion, the hose coupling body which is mounted on the upper surface of the housing corresponding to the upper end of the rotating shaft, the hose coupling groove is formed on the upper surface of the hose coupling body is vertically coupled to the end of the supply hose, It characterized in that it comprises a through-hole formed in the center of the hose coupling groove corresponding to the water supply passage and the upper end of the induction pipe is fitted in the state that the locking jaw is caught.

In addition, the hose coupling portion, the body accommodating groove formed in the lower surface of the hose coupling body corresponding to the upper end of the rotary shaft so that the water filled between the inner peripheral surface of the rotary shaft and the outer peripheral surface of the induction pipe is accommodated in the body accommodating groove It characterized in that it further comprises a drain hole formed in the hose coupling body in communication with the body accommodating groove so that water is discharged.

In addition, the nozzle coupling portion, the nozzle coupling body is coupled to the lower end of the rotating shaft, the nozzle coupling groove is formed on the lower surface of the nozzle coupling body and the upper end of the injection nozzle is vertically coupled, in the center of the nozzle coupling groove And a watertight packing disposed on an upper surface of the through hole in a state in which the through hole is formed to correspond to the water film forming tube and in close contact with a lower surface of the support jaw.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of the present invention, Figure 2 is a front sectional view of the main portion of the present invention.

As shown therein, the jet nozzle rotating apparatus of the waterjet system includes a rotary drive unit 10, a rotary shaft 20 rotated by the rotary drive unit 10, and an upper end of the rotary shaft 20 and a supply hose ( H is coupled to the hose coupling portion 30, the water coupling portion 40 for inducing water from the hose coupling portion 30 to the inside of the rotary shaft 20, and is installed on the lower end of the rotary shaft 20 It includes a nozzle coupling portion 50 to which the injection nozzle (N) is coupled.

The rotation driving unit 10 includes a housing 11, a motor 12 mounted on an upper surface of the housing 11, and a drive gear 13 coupled to the motor 12 into the housing 11. And a reduction gear 14 engaged with the drive gear 13 into the housing 11.

The rotary drive unit 10 is a rotation shaft which is provided perpendicular to the reduction gear 14 as the drive gear 13 is rotated by the driving of the motor 12 while the reduction gear 14 meshed therewith is rotated. 20) to rotate.

The rotating shaft 20 is mounted vertically in the center of the reduction gear 14, rotatably coupled to the housing 11, and has a water supply passage 21 perpendicular to the center.

The rotary shaft 20 is coupled to the nozzle coupling portion 50 by supplying the high pressure water flowing from the hose coupling portion 30 connected to the supply hose (H) to the nozzle coupling portion 50 through the water supply passage 21. At the same time serves to introduce the high pressure water into the injection nozzle (N) while rotating by the rotary drive unit 10 serves to rotate the injection nozzle (N).

The hose coupling portion 30 is mounted on the upper surface of the housing 11 to correspond to the upper end of the rotating shaft 20, the supply hose (H) for supplying high pressure water to the upper surface is vertically coupled, the supply hose (H) It serves to couple the supply hose (H) in a state that the parts are not damaged or damaged by the load of the).

The hose coupling portion 30 having such a role is formed on the hose coupling body 31 mounted on the upper surface of the housing 11 to correspond to the upper end of the rotating shaft 20, and formed on the upper surface of the hose coupling body 31. And a hose coupling groove 32 to which the end of the supply hose H is vertically coupled, and a through hole 33 formed corresponding to the water supply passage 21 at the center of the hose coupling groove 32.

The hose coupling body 31 is mounted on the upper surface of the housing 11 in a state in which the supply hose H is vertically coupled to the hose coupling groove 32 formed on the upper surface thereof, thereby It serves to connect the supply hose (H) in a state where the damage caused by the load is smoothly prevented. The through hole 33 is a passage through which the high pressure water flowing from the supply hose H flows into the watertight guide portion 40.

The hose coupling portion 30 is the body receiving groove 34 formed on the lower surface of the hose coupling body 31 corresponding to the upper end of the rotary shaft 20, the hose coupling body in communication with the body accommodation groove 34 A drain hole 35 formed in the 31 is further included.

The body accommodating groove 34 serves to receive the water raised through the watertight guide portion 40, and the drain hole 35 is a passage through which the water received in the body accommodating groove 34 is discharged to the outside. .

The watertight guide portion 40 is to guide the high-pressure water supplied through the supply hose (H) in the state coupled to the hose coupling portion 30 in a state in which leakage to the water supply passage 21 of the rotary shaft 20 is prevented. , Does not have a separate packing to form a water film to guide the high pressure water to the water supply passage 21 in a state where water leakage is prevented.

The watertight guide portion 40 which serves as described above has an induction pipe 41 having a locking jaw 411 at the upper end so that the upper end is caught by the hose coupling part 30, and an outer circumferential surface of the induction pipe 41. It is inserted between the outer circumferential surface of the induction pipe 41 and the inner circumferential surface of the water supply passage 21 includes a water film forming tube 42 to form a water film.

The induction pipe 41 serves to induce high pressure water from the hose coupling portion 30 to the water supply passage 21 of the rotating shaft 20, and the locking jaw 411 formed at the upper end of the induction pipe 41. ) Is to be assembled to the upper end of the guide pipe 41 is caught inside the hose coupling body (31).

The water film forming tube 42 is inserted between the outer circumferential surface of the induction pipe 41 and the inner circumferential surface of the water supply passage 21 to form a water film to minimize leakage of high pressure water induced through the induction pipe 41. Do it.

The water film forming tube 42 further includes a support jaw 421 formed around the lower end thereof. The support jaw 421 is supported by being in contact with the upper surface of the nozzle coupling portion 50 while being caught on the lower end of the rotating shaft (20).

The nozzle coupling unit 50 is mounted on the lower end of the rotating shaft 20 to support the lower end of the water film forming tube 42 of the watertight guide portion 40 is to be equipped with the injection nozzle (N) on the lower surface.

The nozzle coupling portion 50 is formed on the nozzle coupling body 51 coupled to the lower end of the rotating shaft 20 and the lower surface of the nozzle coupling body 51 so that the upper end of the injection nozzle (N) is vertically The nozzle coupling groove 52 to be coupled, the through-hole 53 formed corresponding to the water film forming tube 42 in the center of the nozzle coupling groove 52 and in close contact with the lower surface of the support jaw 421 And a watertight packing 54 disposed on the top surface of the through hole 53 in a state.

The nozzle coupling body 51 is mounted to the lower end of the rotary shaft 20 to connect the injection nozzle (N) coupled to the nozzle coupling groove 52 formed on the lower surface with the rotary shaft 20 to rotate the rotary shaft 20 The spray nozzle (N) is to be rotated according to.

The through hole 53 is a passage through which the high pressure water discharged downward through the water supply passage 21 of the rotation shaft 20 passes through the inside of the nozzle coupling body 51. The watertight packing 54 is provided in a pressurized state by the support jaw 421 and the nozzle coupling body 51 formed at the lower end of the water film forming tube 42, thereby rotating the shaft 20 and the nozzle coupling body 51. It is to prevent the leakage of water in between.

3 is an enlarged view illustrating main parts of FIG. 2, and FIG. 4 is an enlarged view of portion A of FIG. 3.

As shown in the drawing, the induction pipe 41 has an insertion portion 412 formed around an outer circumferential surface of the rotary shaft 20 that is inserted into the water supply passage 21, and is inserted into the water supply passage 21. will be.

The water film forming tube 42 inserted into the insertion portion 412 is inserted from the lower end of the rotation shaft 20 to the upper side and is disposed between the inner circumferential surface of the water supply passage 21 of the rotation shaft 20 and the insertion portion 412. It is inserted in a state where leakage is prevented and serves to form a water film.

In other words, the water film forming tube 42 is fitted into the insertion portion 412 to be in close contact with the water supply passage 21, so that the inner circumferential surface of the water film forming tube 42 and the outer circumferential surface of the induction pipe 41 are intimately connected. It is in close contact with each other, and a portion of the high pressure water flowing downward in the tight space is filled to form a water film.

As described above, the water film formed by the water film forming tube 42 serves to minimize leakage of the high pressure water flowing downward.

The induction pipe 41 further includes a water receiving groove 413 formed on the outer circumferential surface at which the insertion portion 412 is located. The water receiving groove 413 is improved in the prevention of water leakage while receiving the water filled between the inner peripheral surface of the water film forming tube 42 and the outer peripheral surface of the induction pipe 41.

As described above, the present invention has an effect of preventing leakage of water even without a separate packing, and smoothly preventing a delay in working time due to breakage of the packing due to high pressure water and the replacement of the packing.

In addition, the present invention has an effect that the water film is formed through the induction pipe and the water film forming tube of a simple structure to smoothly and stably prevent the leakage of water.

In addition, the present invention has the effect that the coupling of the supply hose is supplied to the high-pressure water is supplied with a hose coupling portion in a simple structure, and the damage to the coupling portion with the air-air hose by the weight of the supply lake is smoothly prevented.

In addition, the present invention has a simple structure having a nozzle coupling portion is a stable combination of the injection nozzle, the high pressure water has an effect that is stably supplied toward the injection nozzle through the nozzle coupling portion in a state of preventing leakage.

Claims (7)

A housing 11, a motor 12 mounted on an upper surface of the housing 11, a drive gear 13 coupled to the motor 12 into the housing 11, and the housing 11. A rotary drive unit (10) having a reduction gear (14) meshing with the drive gear (13) in the interior thereof; A rotating shaft (20) mounted vertically in the center of the reduction gear (14), rotatably coupled to the housing (11), and having a water supply passage (21) in the center; A hose coupling part 30 mounted on an upper surface of the housing 11 corresponding to an upper end of the rotation shaft 20 and vertically coupled with a supply hose to which high pressure water is supplied; A watertight induction part 40 which guides the high pressure water supplied through the supply hose to the water supply passage 21 while being assembled to the hose coupling part 30 to be prevented from leaking to the water supply passage 21; A nozzle coupling part 50 mounted at a lower end of the rotary shaft 20 to support a lower end of the watertight guide part 40 and having a spray nozzle mounted on a lower surface thereof; Injection nozzle rotation apparatus of a waterjet system comprising a. The watertight guide portion 40 of claim 1, An insertion part 412 is formed around the outer circumferential surface of the hose coupling part 30 and has an engaging jaw 411 at the top to be inserted into the water supply passage 21. Induction pipe 41 to be inserted, Inserted from the lower end of the rotary shaft 20 to the upper side in a state supported by the nozzle coupling portion 50 and inserted in a state in which leakage is prevented between the inner circumferential surface of the water supply passage 21 and the insertion portion 412. The water film forming tube 42 for forming a water film, Injection nozzle rotation apparatus of a waterjet system comprising a. The method of claim 2, wherein the induction pipe 41, Water receiving grooves formed on the outer circumferential surface of the induction pipe 41 in which the insertion portion 412 is positioned to receive water filled between the inner circumferential surface of the water film forming tube 42 and the outer circumferential surface of the induction pipe 41 ( 413) Spray nozzle rotation apparatus of the waterjet system, characterized in that it further comprises. The water film forming tube 42 according to claim 2,  Support jaw 421 is formed around the lower end of the water film forming tube 42 to be supported by the upper surface of the nozzle coupling portion 50 while being caught on the lower end of the rotating shaft 20, Spray nozzle rotation apparatus of the waterjet system, characterized in that it further comprises. The hose coupling part 30 of claim 2, A hose coupling body 31 mounted on an upper surface of the housing 11 corresponding to an upper end of the rotation shaft 20; A hose coupling groove 32 formed on an upper surface of the hose coupling body 31 so that an end of the supply hose is vertically coupled; The through hole 33 is formed in the center of the hose coupling groove 32 corresponding to the water supply passage 21 and the upper end of the induction pipe 41 is fitted in the state that the locking step 411 is caught, Injection nozzle rotation apparatus of a waterjet system comprising a. According to claim 5, The hose coupling portion 30, Body receiving groove 34 formed on the lower surface of the hose coupling body 31 corresponding to the upper end of the rotary shaft 20 so that the water raised between the inner peripheral surface of the rotary shaft 20 and the outer peripheral surface of the guide tube 41 is accommodated )and, The drain hole 35 formed in the hose coupling body 31 in communication with the body accommodating groove 34 to discharge the water contained in the body accommodating groove 34, Spray nozzle rotation apparatus of the waterjet system, characterized in that it further comprises. The method of claim 4, wherein the nozzle coupling portion 50, A nozzle coupling body 51 coupled to the lower end of the rotating shaft 20; A nozzle coupling groove 52 formed on a lower surface of the nozzle coupling body 51 and vertically coupled to an upper end of the injection nozzle; Through holes 53 formed in the center of the nozzle coupling groove 52 corresponding to the water film forming tube 42, The watertight packing 54 disposed on the top surface of the through hole 53 while being in close contact with the bottom surface of the support jaw 421, Injection nozzle rotation apparatus of a waterjet system comprising a.

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