KR200412358Y1 - Low - Noise Type Hydraulic Breaker - Google Patents

Abstract

The present invention relates to a hydraulic breaker, which has a plurality of insertion grooves formed on the inner circumferential surface of the front head front end, and a cylindrical sound absorbing material is attached to the plurality of insertion grooves, and the front head inner circumferential surface located on the front end of the chisel By forming a separate first sound insulation material and forming a cover-shaped second sound insulation on the lower tool retainer portion and forming a third sound insulation on an inner circumferential surface of the lower bush coupled to the inside of the front head end. The present invention relates to a low-noise hydraulic breaker that absorbs and cushions shock noise and vibration generated when striking the chisel, thereby reducing work noise and preventing foreign substances from entering the chisel due to the third sound insulation. ,

Specific solution of the low-noise hydraulic breaker of the present invention as described above [Back Head (12) and the cylinder (Cylinder) 10 and the front head (Front Head) (11) is coupled downwards In the hydraulic breaker (1) including a chisel (3) for crushing rock, ground, etc. while being hit by a piston (2) which reciprocates by hydraulic pressure inside and descending in a constant stroke,

A plurality of insertion grooves 110 are formed on the inner circumferential surface of the front head 11 and are vertically formed at both end portions 111 and the center portion 112, and are inclined between the both end portions 111 and the central portion 112. and,

The outer circumferential surface both end portions 40 and the central portion 41 are vertically formed to be detachably fastened to the insertion grooves 110, respectively, and the inner circumferential surface is inclined between the both end portions 40 and the central portion 41. Is a plurality of cylindrical sound-absorbing material (4) provided to be fastened to each of the plurality of insertion grooves (110) in which a plurality of grooves (42) are formed,

A rectangular fastening groove 113 on an inner circumferential surface of the front head 11 located at the distal end of the chisel 3;

A ring-shaped first soundproofing material 5 having an inclined surface formed at both ends 50 of the inner circumferential surface to be fastened to the fastening groove 113, and

The second sound insulation 6 of the cover shape on the lower end of the first sound insulation 5, that is, the tool retainer 60 in the middle of the front head 11,

The inner surface of the row bush 13 coupled to the inner end of the front head 11 is combined with a third soundproofing agent 7 for preventing the inflow of foreign substances and noise from the outside. have.

The present invention having the configuration described above is a sound absorbing material attached to the insertion groove of the inner circumferential surface of the front end of the front head and the front head located in the front end of the chisel (shock noise and vibration generated when the piston and the chisel are in contact). Head) In the inner circumferential surface, a separate first sound insulation material and a tool retainer are formed on the cover-shaped second sound insulation material, and when the piston hits the chisel, it absorbs the blow noise and vibration from the sound absorbing material first and secondarily to the sound insulation material. The third sound insulation is formed on the inner peripheral surface of the lower bush coupled to the inside of the front head end to absorb or cushion the impact noise and vibration, and again absorbs the impact noise and vibration and strikes from the outside. Prevents the breaker from damage by preventing the inflow of foreign materials between the chisels Kane will be able to mitigate and improve the working environment and further address the environmental problems of the noise.

Piston, Chisel, Front Head, Cylinder, Insertion Groove, Sound Absorbing Material, Soundproofing Material.

Description

Low Noise Type Hydraulic Breaker

1 is a schematic coupling cross-sectional view of the low noise hydraulic breaker of the present invention,

Figure 2 is an enlarged cross-sectional view of the use state of the main portion of Figure 1 separated in the low noise hydraulic breaker of the present invention,

3 is a sectional view of a main part separation in the low noise type hydraulic breaker of the present invention;

4 is a partially cutaway perspective view of the sound absorbing agent in the low noise type hydraulic breaker of the present invention,

Figure 5 is a state of use of the low noise hydraulic breaker of the present invention.

<Description of the symbols for the main parts of the drawings>

                    1: breaker 2: piston

                    3: chisel 4: sound absorbing material

                    5: 1st sound insulation agent 6: 2nd sound insulation agent

                    7: 3rd sound insulation 10: cylinder

                   11: Front Head 12: Back Head

                   13: low bush 40: both ends

                   41: center 42: groove

                   50: both ends 60: tool retainer

                  110: insertion groove 111: both ends

                  112: center 113: fastening groove

The present invention relates to a hydraulic breaker, which has a plurality of insertion grooves formed on the inner circumferential surface of the front head front end, and a cylindrical sound absorbing material is attached to the plurality of insertion grooves, and the front head inner circumferential surface located on the front end of the chisel By forming a separate first sound insulation material and forming a cover-shaped second sound insulation on the lower tool retainer portion and forming a third sound insulation on an inner circumferential surface of the lower bush coupled to the inside of the front head end. The present invention relates to a low-noise hydraulic breaker capable of absorbing and cushioning shock noise and vibration generated when striking the chisel, to reduce work noise, and to prevent foreign substances from flowing into the chisel due to the third sound insulation. .

In general, hydraulic breakers are widely used for crushing concrete or rock by installing them on construction machinery such as excavators and loaders. The crushing tool is a chisel, which is a hydraulic tool of a cylinder. Crush.

In recent years, the noise regulations at construction sites have been tightened, and the report on the labeling of construction machinery noise level has been changed to mandatory in 2006, and more than 20 products such as excavators, dozers, loaders, and breakers will be designated as mandatory marking requirements.

In addition, if the area within 50m from residential areas, apartment houses, schools, hospitals, public libraries, etc. is to be designated as a constant temperature area, and a specific construction with high noise level is required in accordance with the environmental regulations in the constant temperature area, a soundproofing facility shall be installed before the construction. The report of change in addition of large construction equipment should also be compulsory.

In accordance with these regulations, the breaker included in the noise level recommendation targets the development of low noise products using promotion measures such as the certification of the low noise type breaker which reduces the noise by improving the conventional hydraulic breaker to avoid the noise regulation. .

The noise generated during the operation of the hydraulic breaker is mainly caused by the blow sound generated when the piston reciprocating inside the breaker hits the chisel, which is the hitting tool that is in contact with the workpiece. It is similar to the principle of hitting the crushed object by hitting the chimney. Generally, the noise level of the breaker used in the construction site is about 90 ~ 110dB depending on the breaker size at a distance of 7.5m from the breaker body.

Such a general breaker has a problem that can not buffer and reduce the impact noise or vibration.

The low noise type hydraulic breaker of the present invention is designed to reduce the impact noise or vibration as described above.

First of all, the purpose of the present invention is to increase noise removal efficiency by directly absorbing noise sources that generate hitting noise and vibration by hitting them by installing a separate sound absorbing material on the inner circumferential surface of the front head.

Next, as described above, the impact noise and vibration are reduced, and at the same time, a separate soundproofing material is formed on the inner circumferential surface of the front head located at the tip of the chisel, thereby releasing the impact noise due to the piston hitting the chisel. It is possible to minimize the noise, so that the noise caused by hitting noise and vibration generated by the blow is absorbed directly from the place where the purpose is to increase the noise removal efficiency,

Next, the soundproofing material is formed on the inner surface of the lower bush to prevent the damage of the breaker and extend the life by preventing the foreign matter that can enter the breaker from the rock or the ground at the time when the chisel hits the rock and the ground. Its purpose is to.

The specific solution of the low-noise hydraulic breaker of the present invention for achieving the above object is [back head and downward cylinder (Cylinder) and front head (Front Head), etc. in the hydraulic In the hydraulic breaker including a chisel to crush the rock, ground, etc. while being hit by the piston reciprocating and descending in a certain stroke,

A plurality of insertion grooves formed on the inner circumferential surface of the front head end and vertically formed at both end portions and the center portion and inclined between the both end portions and the center portion;

The outer circumferential surface both end portions and the central portion are vertically formed to be detachably fastened to the insertion grooves, and the inner circumferential surface is inclined between the both end portions and the central portion, respectively, in the plurality of insertion grooves in which a plurality of grooves are formed. A plurality of cylindrical sound absorbing material provided to be fastened,

A rectangular fastening groove on an inner circumferential surface of the front head located at the tip of the chisel;

A ring-shaped first soundproofing material having an inclined surface at both ends of the inner circumferential surface to be fastened to the fastening groove,

A cover-shaped second sound insulation on the lower end of the first sound insulation, that is, the front head middle part tool retainer;

The lower bushing inner circumferential surface coupled to the inside of the front head end is combined with a third soundproofing agent for preventing the inflow of foreign matter and noise from the outside.

Hereinafter, a detailed description of the low noise type hydraulic breaker of the present invention will be described with reference to the drawings.

1 is a schematic coupling cross-sectional view of the low noise hydraulic breaker of the present invention, Figure 2 is an enlarged cross-sectional view of the use state of the main portion of Figure 1 separated in the low noise hydraulic breaker of the present invention, Figure 3 is a low noise type of the present invention Fig. 4 is a partial cutaway perspective view of the sound absorbing agent in the low noise type hydraulic breaker of the present invention, and Fig. 5 is a state diagram of the low noise type hydraulic breaker of the present invention.

First, the general hydraulic breaker 1 will be described.

It is largely composed of a back head 12, a cylinder 10, a front head 11, a piston 2 and a chisel 3.

On the other hand, the piston (2) is installed inside the cylinder (10) to reciprocate by hydraulic pressure and the chisel (3) is blown by the piston (2) is a function to crush the rock while descending in a constant stroke It is configured to perform.

In the hydraulic breaker of the general configuration as described above in detail the specific configuration of the present invention,

A plurality of insertion grooves 110 are formed in the inner circumferential surface of the front end of the front head 11.

The insertion groove 110 is provided to coincide with the outer circumferential surface of the sound absorbing material 4 to be described below, its specific configuration, as shown in FIG.

A plurality of insertion grooves 110 which are vertically formed at both end portions 111 and the center portion 112 and are inclined between the both end portions 111 and the center portion 112 are distal to the front head 11. It is formed in plural on the inner circumferential surface.

Next, both ends 40 and the center 41 of the outer circumferential surface are fastened to be detachably fastened to the insertion grooves 110, respectively, and are inclined between the two ends 40 and the center 41. In the inner circumferential surface is provided with a cylindrical sound absorbing agent (4) in which a plurality of grooves (42) are formed to be fastened to the plurality of insertion grooves (110), respectively.

Next, a rectangular fastening groove 113 is formed on an inner circumferential surface of the front head 11 positioned at the distal end of the chisel, and both ends 50 of the inner circumferential surface 50 are fastened to the fastening groove 113. The ring-shaped first soundproofing material 5 in which the inclined surface was formed is detachable.

Next, a cover-shaped second sound insulation 6 inserted into the lower end of the first sound insulation 5, that is, the middle of the front head 11, the tool retainer 60, is formed.

Next, a third soundproofing agent 7 is formed on the inner circumferential surface of the row bush 13 coupled to the inner end of the front head 11 to prevent the inflow of foreign substances from the outside and to prevent noise.

As described above, the configuration for the low noise type hydraulic breaker of the present invention will be described in detail below.

First, the chisel 3 is placed in the crushed part of the crushed object in a state in which the present invention is mounted on a construction machine such as an excavator or a loader, and the piston 2 reciprocates to hit the front end surface of the chisel 3 to avoid bleeding. To shred crushed material.

In this case, as shown in FIG. 2, first, by inserting and coupling the third soundproofing agent 7 to the inner circumferential surface of the lower bush 13 coupled to the inner side of the front head 11 end of the foreign matter that can be introduced from the outside. The low bushing 13 is coupled to the front head 11, and then the tool retainer 60 in the middle of the front head 11 is coupled to the front head 11. The cover-shaped second soundproofing agent 6 is coupled, and the soundproofing agent 5 is firmly fastened to the fastening groove 113, and the sound absorbing agent 4 is firmly fastened to the plurality of insertion grooves 110, respectively. A plurality of cylindrical sound absorbing materials 4 attached to an outer circumferential surface of the piston 2 and the chisel 3, that is, an inner circumferential surface of the front head 11, are primarily coupled to the piston 2. Absorbs and cushions the blow noise caused by the reciprocating motion of the Absorbing impact noise by the first soundproofing agent 5 and the second soundproofing agent 6 fastened to the fastening groove 113 formed on the inner circumferential surface of the front head 11 positioned at the tip of the chisel 3. And by buffering to be able to double the dispersion and absorption of the impact noise.

That is, at the same time minimizing the primary blow noise by the sound absorbing material (4) it is possible to minimize the noise at the time of secondary blow by the first sound insulation (5), the second sound insulation (6).

In addition, the third soundproofing agent (7) is to minimize the impact noise and at the same time to prevent the foreign substances flowing into the outside.

The present invention having the configuration described above is a sound absorbing material attached to the insertion groove of the inner circumferential surface of the front end of the front head and the front head located in the front end of the chisel (shock noise and vibration generated when the piston and the chisel are in contact). Head) In the inner circumferential surface, a separate first sound insulation material and a tool retainer are formed on the cover-shaped second sound insulation material, and when the piston hits the chisel, it primarily absorbs the blow noise and vibration from the sound absorbing material, and secondly by the sound insulation material. The third soundproofing agent formed on the inner circumferential surface of the lower bush coupled to the inside of the front head end absorbs the impact noise and vibration and absorbs the impact noise and vibration. Prevents the breaker from damage by preventing the inflow of foreign substances between the chisels and the impact noise and dust from outside when working Kane will be able to mitigate and improve the working environment and further address the environmental problems of the noise.

Although specific embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments. Various changes and modifications may be made by the user.

Claims (1)

It is hit by the piston 2 which reciprocates by hydraulic pressure to the inside where the cylinder 10 and the front head 11 are coupled downward with the back head 12. In a hydraulic breaker (1) comprising a chisel (3) which breaks rocks, ground, etc. while descending with a constant stroke, A plurality of insertion grooves 110 are formed on the inner circumferential surface of the front head 11 and are vertically formed at both end portions 111 and the center portion 112, and are inclined between the both end portions 111 and the central portion 112. and, The outer circumferential surface both end portions 40 and the central portion 41 are vertically formed to be detachably fastened to the insertion grooves 110, respectively, and the inner circumferential surface is inclined between the both end portions 40 and the central portion 41. Is a plurality of cylindrical sound-absorbing material (4) provided to be fastened to each of the plurality of insertion grooves (110) in which a plurality of grooves (42) are formed, A rectangular fastening groove 113 on an inner circumferential surface of the front head 11 located at the distal end of the chisel 3; A ring-shaped first soundproofing material 5 having an inclined surface formed at both ends 50 of the inner circumferential surface to be fastened to the fastening groove 113, and The second sound insulation 6 of the cover shape on the lower end of the first sound insulation 5, that is, the tool retainer 60 in the middle of the front head 11, Low noise type hydraulic breaker, characterized in that coupled to the inner peripheral surface of the lower bush (13) coupled to the inner end of the front head (11) for preventing the inflow of foreign matters from outside and noise prevention.

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