KR200427057Y1 - Water injection device for chisel of hydraulic breaker - Google Patents

Abstract

The present invention relates to a water jetting device for a hydraulic breaker chisel, and more particularly, to install a water jetting means on the bottom of the front head portion of the hydraulic breaker, and at the same time, a water supply passage and a jetting nozzle part corresponding to the water jetting means are formed in the chisel. In order to ensure that water is sprayed at high pressure through the jetting nozzle of the chisel during the crushing operation such as rock by the chisel hitting of the hydraulic breaker, the hydraulic pressure can be prevented from wearing the chisel, preventing dust from scattering and noise shielding. A water jetting device for a breaker chisel.

To this end, the present invention is in the hydraulic breaker comprising a main body and front head portion is installed, the hydraulic circuit and the operating means such as the hydraulic cylinder and the chisel of a predetermined length exposed downward through the bottom surface of the front head portion. The water jetting device of the hydraulic breaker chisel is characterized in that the water supply means is mounted to the bottom of the front head portion, the water jet means for injecting the water supplied from the water supply means to the ground inside the chisel. to provide.

Hydraulic breaker, chisel, water sprayer, water supply means, water sprayer

Description

Water injection device for chisel of hydraulic breaker

1 is an exploded perspective view illustrating the water supply means used in the water injection device of the hydraulic breaker chisel according to the present invention,

Figure 2 is an exploded perspective view of a partial cross-section showing the water injection device of the hydraulic breaker chisel according to the present invention,

3 and 4 are assembled cross-sectional view showing the water injection device of the hydraulic breaker chisel according to the present invention, Figure 3 is a state in which the water supply hose is extended to the outside of the hydraulic breaker, Figure 4 is the inside of the hydraulic breaker Assembly cross-section showing an extended state,

Figure 5 is a cross-sectional view showing a state of use of the water jet device of the hydraulic breaker chisel according to the present invention.

<Explanation of symbols for main parts of the drawings>

10: water supply means 12: bushing

14 cover 16 water supply hole

18: water supply groove 20: protective cover

22: through hole 24: water supply tank

26: water supply hose 28: water injection means

30: horizontal water supply passage 32: vertical water supply passage

34: jet nozzle 36: single nozzle

38: Multiple Nozzle 40: Rubber Packing

100: hydraulic breaker 102: upper coupling

104: main body 105: front head

106: chisel 108: hydraulic cylinder

110: piston 112: nitrogen gas charging unit

200: excavator 202: boom

The present invention relates to a water jetting device of a chisel for hydraulic breaker, and more particularly, a water supply means is installed at the bottom of the front head of the hydraulic breaker, and at the same time, a water supply path and an injection nozzle part corresponding to the water supply means are installed in the chisel. In order to ensure that water is sprayed at high pressure through the jetting nozzle of the chisel in the case of crushing rock or the like due to the chisel blow of the hydraulic breaker, it is possible to obtain effects such as preventing the wear of the chisel, preventing dust from scattering in the workplace and noise shielding A water jetting device for a hydraulic breaker chisel.

Excavators generally include a cockpit, an engine compartment including hydraulic supply means, a boom moving up, down, left and right to perform actual excavation work, and a bucket or hydraulic breaker detachably mounted at the end of the boom according to the intended use. It is configured to include.

Such excavators can perform a variety of tasks, such as housing site construction work, building foundation work, various loading work, horse punching, digging, bridge and rock crushing work, road and water and sewage construction.

That is, a bucket is mounted on a boom for loading sand or soil, and a hydraulic breaker is mounted on a boom for rock crushing, tunneling, and track work.

1 to 5 attached to the configuration of the hydraulic breaker 100, the upper assembly 102 coupled to the boom 202 of the excavator 200, and the nitrogen formed under the upper assembly 102 Through the main body 104 and the front head portion 105, and the bottom surface of the front head portion 105, the gas filling unit 112, the hydraulic circuit and the operating means such as the hydraulic cylinder 108 are collectively installed. The chisel 106 is configured to include a chisel 106 exposed to a predetermined length to perform a crushing motion with respect to the rock, and substantially by hitting the piston 110 of the hydraulic cylinder 108 installed in the main body 104. ) Vibrates up and down and breaks down rocks.

In more detail, the hydraulic breaker 100 is mounted on construction equipment such as an excavator or a loader, and is widely used for crushing concrete or rock, such as the upper end of the chisel 106 which is a practical crushing tool. The piston 110 due to the hydraulic pressure of the hydraulic cylinder 108 is raised and lowered to hit the lower end (pointed portion) of the chisel 106 by the striking force to crush concrete or rock.

Due to the repeated crushing operation of the hydraulic breaker by the chisel, excessive heat is generated at the lower end of the chisel (heat treated part as a pointed part), so that the lower end of the chisel is deformed by ordinary steel before heat treatment and is easily worn. .

In addition, the cost of the replacement of worn chisels must be replaced with new ones, and problems such as troublesome workability and workability of the chisel replacement work are caused.

The present invention has been made in view of the above problems, by installing a water supply means on the bottom of the front head portion of the hydraulic breaker, and at the same time to form a water supply passage and a spray nozzle part corresponding to the water supply means in the chisel, the chisel of the hydraulic breaker Water is injected at high pressure through the jetting nozzle of the chisel during the crushing operation such as rock by hitting, thereby reducing the generation of heat of the chisel and preventing abrasion, and preventing the scattering of dust due to the striking operation. It is an object of the present invention to provide a water jetting device of a chisel for a hydraulic breaker that can provide a noise shielding effect by integrating the chisel blow sound into the injection noise.

The present invention for achieving the above object: a main body and a front head portion in which operating means such as a hydraulic circuit and a hydraulic cylinder are concentrated, and a chisel of a predetermined length exposed downward through the bottom surface of the front head portion. In the hydraulic breaker comprising a water supply means mounted to the bottom surface of the front head portion, the water jet means for spraying the water supplied from the water supply means to the ground inside the chisel is installed Provide a chisel water jet device.

In a preferred embodiment, the water supply means includes: a bushing mounted at the bottom of the front head portion as a structure in which a through hole through which the chisel passes, and a lid bolted to the bottom of the bushing; A water supply hole penetrating from an outer circumferential surface of the cover to an inner circumferential surface; A water supply groove concavely formed along the inner circumferential surface of the through hole of the cover which is the outlet of the water supply hole and sealed by the inner diameter surface of the chisel; A protective cover attached to a bottom of the cover; It characterized in that it comprises a water supply means connected to the inlet side of the water supply hole.

The water supply means is characterized in that consisting of a water supply tank installed at a predetermined position of the excavator, and a water supply hose connected between the inlet of the water supply hole and the water supply tank.

In a preferred embodiment, the water spraying means comprises: a horizontal water supply passage extending from the outer diameter surface of the chisel to the inside of the chisel to coincide with the outlet of the water supply hole; A vertical water supply passage extending from the horizontal water supply passage to the lower end of the chisel; It characterized in that it comprises a spray nozzle portion formed in the lower end of the chisel while communicating with the lower end of the vertical water supply.

In a more preferred embodiment, the injection nozzle portion is composed of a single nozzle at the lower end of the chisel, or a plurality of nozzles arranged radially over the lower end of the chisel and its outer circumferential surface.

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

1 is an exploded perspective view illustrating the water supply means used in the water jetting device of the hydraulic breaker chisel according to the present invention, Figure 2 is a separation of some cross-section showing the water jetting device of the hydraulic breaker chisel according to the present invention 3 and 4 are assembled cross-sectional views showing the water jetting device of the hydraulic breaker chisel according to the present invention, showing a different method of mounting the water supply hose.

The present invention provides a water supply means at the bottom face of the front head of the hydraulic breaker to coincide with the water supply means in order to spray water at high pressure in the crushing operation such as a rock by the chisel blow of the hydraulic breaker. The configuration is characterized in that the feed passage and the injection nozzle portion are formed in the chisel.

As shown in FIGS. 1 to 4, the water supply means 10 includes a bushing 12 mounted on the bottom of the front head portion 105, and a rubber packing 40 on the bottom of the bushing 12. Cover 14 which is bolted in between, and a protective cover attached to the bottom of the cover 14 by bolting or the like to reinforce the structure of the water supply hole 16 and the water supply groove 18 formed in the cover 14. It consists of 20.

The bushing 12 and the cover 14 have a structure in which a through hole 22 through which the chisel 106 penetrates is formed at the center thereof, and prevents the grease from flowing down in the front head portion 105 and prevents the piston from falling. As a means for reducing noise by blocking the flow of internal air when hitting the chisel 106 by 110, the cover 14 is provided with a water supply hole 16 and a water supply groove 18.

More specifically, the water supply hole 16 penetrates from the outer circumferential surface of the cover 14 to the inner circumferential surface, and is concave along the inner diameter surface of the through hole 22 of the cover 14, which is an outlet of the water supply hole 16. The water supply groove 18 is formed.

At this time, the inner diameter surface of the cover 14 having the outlet of the water supply hole 16 and the water supply groove 18 is sealed by the outer diameter surface of the chisel 106 passing through the through hole 22.

In addition, the water supply means is connected to the inlet of the water supply hole 16 formed on the outer circumferential surface of the cover 14, the water supply means is a water supply tank 24 is installed at a predetermined position of the excavator, and the water supply hole It is composed of a water supply hose 26 connected between the inlet of the 16 and the water supply tank 24, the water supply tank 24 may be disposed within the working radius without being installed in the excavator.

On the other hand, since the water supply hose 26 is stretched to the outside, which is not good in appearance and may be damaged by external force, as shown in FIG. 4, the front head portion 105 of the hydraulic breaker 100 and The water supply hose 26 may be built into the inner space of the main body 104 to be connected to the water supply tank 24.

Here, look at the water injection means configured in the chisel as follows.

1 to 4, the water injection means 28 is a means configured in the chisel 106 to receive water from the water supply hole 16 of the water supply means 10, A horizontal water supply passage 30 extending from the outer diameter surface of the chisel 106 to the inside of the chisel 106 so as to coincide with the outlet of the water supply hole 16, and a lower end portion of the chisel 106 in the horizontal water supply passage 30. It consists of a vertical water supply passage 32 extending to the lower end of the chisel 106 while being in communication with the lower end of the vertical water supply passage 32.

More specifically, the horizontal water supply passage 30 is formed on the outer diameter surface of the chisel 106 at the position coinciding with the outlet of the water supply hole 16 and the water supply groove 18 of the cover 14. 30 is a single or a plurality of penetrating through the inner center portion of the chisel 106, a single vertical water supply passage 32 is formed to penetrate from the inner end of the horizontal water supply passage 30 to the lower end of the chisel 106 do.

In particular, the injection nozzle portion 34 is provided at the lower end of the chisel 106, the injection nozzle portion 34 is in communication with the lower end of the vertical water supply passage 32, the sole nozzle formed at the lower end of the chisel 106 Or a plurality of nozzles 38 radially penetrating through the lower end of the chisel 106 and its outer circumferential surface in order to increase water spraying area and efficiency.

Here, looking at the operating state of the water injection device of the hydraulic breaker chisel for the present invention made of the configuration as described above are as follows.

5 is a cross-sectional view showing a state of use of the water jetting device of the hydraulic breaker chisel according to the present invention.

During operation of the hydraulic breaker 100, that is, the upper end of the chisel 106, which is a practical crushing tool, is blown while the piston 110 is lifted up and down by the hydraulic force of the hydraulic cylinder 108. During the operation of crushing the concrete or rock, such as the lower end (pointed part) of the chisel 106, excessive heat is generated in the lower end (heated portion as a pointed part).

Thus, the water pump (not shown) in the water supply tank 24 to drive the water flows through the water supply hose 26 toward the water supply means (10).

At the same time, when water is supplied through the water supply hole 16 of the cover 14 of the water supply means 10, the water exits the outlet of the water supply hole 16 and the water supply groove (in the inner peripheral surface of the cover 14) 18).

Subsequently, water is supplied to the horizontal water supply passage 30 of the chisel 106 that is coincident with the water supply hole 16 and the water supply groove 18, and immediately the horizontal water supply passage 30 of the chisel 106 is provided. The water is supplied to the lower end of the chisel 106 through the vertical water supply (32).

Subsequently, high pressure injection is performed toward the portion (ground or rock crushed mass, etc.) in which the shredding operation is performed through the single nozzle 36 formed in the lower end of the chisel 106 or the plurality of nozzles 38 formed in the radial arrangement.

Therefore, the heat generated from the lower end of the chisel 106 can be cooled to prevent the wear of the chisel 106, to prevent dust from scattering in the workplace due to the striking work, thereby improving the working environment, and also water spray noise. The chisel hitting sound is fused to obtain a noise shielding effect.

As described above, according to the water injection device of the hydraulic breaker chisel according to the present invention, the water supply means and the spray nozzle in the interior of the chisel at the same time the water supply means is installed on the bottom of the front head of the hydraulic breaker By forming a portion, water may be injected at a high pressure through the spray nozzle portion of the chisel during the crushing operation such as a rock by the chisel strike of the hydraulic breaker to provide the following effects.

1) By cooling the heat generated from the lower part of the chisel, the chisel can be prevented from being deformed into ordinary steel before heat treatment, and at the same time, it can prevent wear, thereby extending the life of the chisel.

2) As the scattering dust in the workplace due to the blow and crushing of the chisel is removed by water injection, the working environment can be greatly improved, and the chisel can be easily cleaned to keep the chisel equipment clean at all times. Can extend chisel life.

3) The noise of chisel blow is blended with the water jet noise to obtain noise shielding effect.

4) It is possible to suppress the increase in cost of replacing the worn chisel with a new one, and delay the hassle and workability of replacement work.

Claims (5)

In a hydraulic breaker comprising a main body and a front head portion in which operating means such as a hydraulic circuit and a hydraulic cylinder are concentrated, and a chisel of a predetermined length exposed downward through the bottom surface of the front head portion, The water supply means 10 is mounted on the bottom surface of the front head portion 105, and the water injection means 28 is capable of spraying the water supplied from the water supply means 10 to the ground inside the chisel 106. Water jetting device of the chisel for hydraulic breaker, characterized in that installed. The method of claim 1, wherein the water supply means 10: A through hole 22 through which the chisel 106 penetrates is formed in the center, and a bushing 12 mounted on the bottom of the front head portion 105 and a lid 14 bolted to the bottom of the bushing 12 are formed. ; A water supply hole 16 penetrating from the outer circumferential surface of the cover 14 toward the inner circumferential surface; A water supply groove 18 formed concave along the inner circumferential surface of the through hole 22 of the cover 14 serving as the outlet of the water supply hole 16 and sealed by the outer diameter surface of the chisel 106; A protective cover 20 attached to the bottom of the cover 14; Water injection device of the hydraulic breaker chisel, characterized in that it comprises a water supply means connected to the inlet side of the water supply hole (16). The method of claim 2, wherein the water supply means: A water supply tank 24 installed at a predetermined position of the excavator; Water injection device of the hydraulic breaker chisel, characterized in that consisting of a water supply hose (26) connected between the inlet of the water supply hole (16) and the water supply tank (24). The method of claim 1, wherein the water injection means 28 is: A horizontal water supply passage 30 extending from the outer diameter surface of the chisel 106 to the inner center of the chisel 106 so as to coincide with the outlet of the water supply hole 16 and the water supply groove 18; A vertical water supply passage 32 extending from the horizontal water supply passage 30 to the lower end of the chisel 106; The water injection device of the hydraulic breaker chisel, characterized in that it comprises a spray nozzle portion 34 formed in the lower end of the chisel 106 while communicating with the lower end of the vertical water supply (32). The plurality of nozzles (38) of claim 4, wherein the injection nozzle part (34) comprises a single nozzle (36) at the lower end of the chisel (106), or is arranged radially over the lower end of the chisel (106) and its outer circumferential surface. Water jetting device of the chisel for hydraulic breaker, characterized in that consisting of.

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