WO2011059217A2 - System for preventing idle blow and adjusting hitting power of breaker - Google Patents

System for preventing idle blow and adjusting hitting power of breaker Download PDF

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Publication number
WO2011059217A2
WO2011059217A2 PCT/KR2010/007892 KR2010007892W WO2011059217A2 WO 2011059217 A2 WO2011059217 A2 WO 2011059217A2 KR 2010007892 W KR2010007892 W KR 2010007892W WO 2011059217 A2 WO2011059217 A2 WO 2011059217A2
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WO
WIPO (PCT)
Prior art keywords
breaker
pipe
piston
force control
hydraulic
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PCT/KR2010/007892
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French (fr)
Korean (ko)
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WO2011059217A3 (en
Inventor
이일재
김경호
강영기
김명보
김용진
Original Assignee
주식회사 수산중공업
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Priority to CN201080050943.5A priority Critical patent/CN102686819B/en
Publication of WO2011059217A2 publication Critical patent/WO2011059217A2/en
Publication of WO2011059217A3 publication Critical patent/WO2011059217A3/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/16—Valve arrangements therefor
    • B25D9/18—Valve arrangements therefor involving a piston-type slide valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/16—Valve arrangements therefor
    • B25D9/20—Valve arrangements therefor involving a tubular-type slide valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
    • B25D9/265—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof with arrangements for automatic stopping when the tool is lifted from the working face or suffers excessive bore resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/007—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is not coaxial with the piston

Definitions

  • the present invention by the operation of setting the turning force of the adjustment of the impact force of the breaker and the anti-hit prevention part of the breaker which is installed outside the cylinder of the hydraulic breaker, which is a hydraulic impact machine, to the cylinder and the piston of the breaker through the blow control valve
  • the present invention relates to a breaker's striking force control and anti-striker system for smoothly performing hitting and smashing and smashing of the striking rod operated by the striking rod.
  • the ball and blow force control valves and the high pressure in the high-pressure pipe is operated by actuating the blow and direction control unit for the blow force control and anti-ball Discharges to hydraulic discharge pipe through weak and smashing conversion path Accordingly, to prevent damage of the lower structure such as the front head and the hitting rod pin of the breaker when the breaker strikes, and the high pressure flowing into the high-pressure pipe through the hitting and hitting force control valves to switch or weakened conversion port
  • the stroke of the piston it is possible to adjust the stroke of the piston.In the case of the crushing operation requiring a large impact force such as rock break, the piston stroke is increased to increase the impact force of the striking rod and work like soft rock or concrete crushing.
  • the present invention has been made to improve the above-mentioned conventional problems, and an object thereof is to provide a hydraulic inlet pipe with an accumulator and a high-pressure pipe, which controls the piston hitting the striking rod inside the cylinder of the breaker.
  • the high pressure pipe is communicated with each other, and the hydraulic outlet pipe and the low pressure pipe communicated with each other are communicated with each other via a pipe control valve.
  • an anti-outlet pipe and an end thereof are used to control the stroke of the piston.
  • the weak switching port and the swamp switching pipe formed at the end and the swamp switching port formed at the end thereof are mutually communicated through the smashing and striking force regulating valve, and the upper part of the swamp switching pipe communicates with the pipeline control valve via the valve switching pipe.
  • the lower portion of the sluice switching pipe is to be in communication with the hydraulic outflow pipe via the low pressure pipe, wherein the struck And the striking force control valve is installed to be open and closed by the striking force adjusting and anti-ballast turning direction installed rotatably to the outside of the breaker cylinder, thereby striking the striking force adjusting and anti-ballast turning direction installed on the outside of the breaker cylinder ( H) and the blow (L), by the operation to selectively rotate to the anti-ball (X) position, the blow and blow force control valves and the air pressure control valves and the high-pressure pipe to control the high pressure line Discharge to the hydraulic discharge pipe through the weak and sluice conversion path to prevent the occurrence of hitting, and thus to prevent the breakage of the lower structure such as the front
  • the stroke of the piston is increased to increase the impact force of the striking rod and work such as soft rock or concrete crushing.
  • the present invention as a technical means for achieving the above object, in the breaking force control and anti-ballout system of the breaker,
  • the high pressure line communicated with the accumulator communicates with the hydraulic inlet pipe so as to control the piston striking the striking rod
  • the low pressure line communicated with the hydraulic outlet pipe communicates with one side of the high pressure line. It is communicated with each other via a valve, and at one end of the high-pressure pipeline, an anti-vibration pipeline, a weak conversion port and a slew conversion channel formed at an end thereof, and a slew conversion port formed at an end thereof, control the stroke of the piston.
  • the upper part of the shunt switching pipe is in communication with the pipeline control valve via the valve switching pipe
  • the lower portion of the shunt switching pipe is made of a configuration that is to communicate with the hydraulic outlet pipe through the low pressure pipe.
  • the hitting and hitting force control valve is installed in the opening and closing of the breaker force control and anti-hit prevention direction switching unit rotatably installed outside the cylinder of the breaker, wherein the hitting force adjustment and anti-hit prevention direction switching unit At the periphery thereof, the slap display unit H, the weak display unit L, and the anti-hit display unit X for changing the direction are formed.
  • the impact force control and the anti-battery direction switching unit installed on the outside of the breaker cylinder selectively rotates to the position of the struck (H), weak (L), anti-ball (X)
  • the blow force and blow force control valves and the blow force control and anti-hit change direction is activated to discharge the high pressure of the high-pressure pipe through the hydraulic and blow switch to the hydraulic discharge pipe to prevent the occurrence of ball strike, accordingly
  • the stroke of the piston can be adjusted, thus breaking the rock In a crushing operation that requires a large impact force, the stroke of the piston is increased to increase the impact force of the impact rod, and during operation such as soft rock or concrete crushing,
  • FIG. 1 is a front configuration diagram of a breaker equipped with a breaker blow force adjustment and anti-ballout direction change unit according to the present invention.
  • Figure 2 is a schematic configuration diagram of a hydraulic line showing a non-battering state of the breaker piston of the present invention.
  • Figure 3 is a schematic configuration diagram of a hydraulic line showing a struck state of the breaker piston of the present invention.
  • Figure 4 is a schematic configuration diagram of a hydraulic pipe showing a weak state of the breaker piston of the present invention.
  • FIG. 1 is a front configuration diagram of a breaker provided with a breaker hitting force control and anti-ballet turning direction according to the present invention
  • Figure 2 is a schematic configuration diagram of a hydraulic pipe showing a non-ballet state of the breaker piston of the present invention
  • Figure 3 and 4 is a schematic configuration diagram of a hydraulic line showing a struck state and a struck state of the breaker piston according to the present invention.
  • the piston hitting the striking rod 30 inside the cylinder 20 of the breaker 10 (
  • the high pressure pipe line 60 communicated with the accumulator 50 to communicate with the hydraulic inlet pipe 70 is communicated with the accumulator 50, and one side of the high pressure pipe line 60 communicates with the hydraulic outlet pipe 80.
  • Low-pressure pipeline 90 is to communicate with each other via the pipeline control valve (100).
  • the one end of the high-pressure pipe line 60 is formed in the smashing conversion port 120 and the sluice conversion pipe line 130 and the end formed at the end of the anti-vibration pipe line 110 and its end to control the stroke of the piston 40.
  • Swift switching port 140 is mutually speaking through the struck and striking force control valve 150, and the upper portion of the swash switching pipe 130 communicates with the pipeline control valve 100 via the valve switching pipe (160)
  • the lower portion of the shunt conversion pipe 130 is provided to communicate with the hydraulic outlet pipe 80 through the low pressure pipe 90.
  • the smashing and striking force control valve 150 is opened and closed so as to be opened and closed by addressing the directional control unit 180 and the striking force adjusting and rotatable prevention installed rotatably outside the cylinder 20 of the breaker.
  • the anti-hit direction switching unit 180 has a configuration in which a slap display unit H, a weak display unit L, and an anti-ball display unit X for changing directions are formed at the periphery thereof.
  • the striking display portion H and the weakness display portion L of the breaker direction control unit 180 for adjusting the striking force of the breaker installed outside the cylinder 20 of the hydraulic breaker 10.
  • the strike rod 30 of the breaker through the blow control valve 150 is not struck by the piston (40)
  • the high pressure pipe is introduced into the cylinder 20 of the breaker 10 to the accumulator 50 to control the piston 40 striking the striking rod 30.
  • 60 is communicated with the hydraulic inlet pipe 70 so that the hydraulic pressure is introduced into the high pressure pipe line 60 through the hydraulic inlet pipe 70.
  • the ball and blow force control valve 150 inside the cylinder blocks the ball prevention line 110, the hydraulic pressure
  • the high pressure pipe (60) and the swamp switching port (140) flows into the pipeline control valve (100) along the valve switching pipe (160).
  • the piston (40) is raised and lowered to the maximum stroke and swung ( ⁇ ⁇ ). ) To perform the operation.
  • the slewing and impact force control valve 150 inside the cylinder blocks the shunt switching pipe 130, the hydraulic pressure After passing through the anti-vibration pipe line 110 through the weak switching port 120, the flow path is introduced into the pipeline control valve 100 along the valve switching pipe 160, wherein the piston 40 is raised and lowered with a minimum stroke. It descends to enable the yak motion.
  • the hydraulic pressure flowing into the high pressure pipe line 60 through the blow and strike force control valve 150 flows out into the hydraulic outlet pipe 80 along the low pressure pipe line 90, thereby preventing the blow of the piston 40.
  • the hydraulic pressure selectively flows into the swash switching port 140 or the weak switching port 120 so that the stroke stroke of the piston 40 can be adjusted. Accordingly, in a crushing operation requiring a large impact force such as crushing rock, Increasing the stroke of the piston 40 to increase the impact force of the impact rod, while reducing the piston 40 stroke to reduce the impact force of the impact rod during operation, such as soft rock or concrete crushing, by the piston 40 of the breaker It is possible to smoothly perform the non-batting and smashing, smashing operation of the blow rod 30 is operated.
  • the front of the breaker To prevent damage to lower structures such as heads and striking rod pins, and in shredding operations where large striking force is required, such as rock breaking, increase the stroke of the piston to increase the striking force of the striking rod, and When working together, it is possible to reduce the stroke force of the hitting rod by reducing the piston stroke, while having an excellent effect of smoothly performing the non-batting and smashing of the hitting rod actuated by the piston of the breaker.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Crushing And Grinding (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

The present invention relates to a system for preventing an idle blow and adjusting hitting power of a breaker, which can set an idle blow-preventive direction converting unit by rotating the direction converting unit in a desired direction and adjust the hitting power of the breaker that is provided on the outer side of a cylinder of a hydraulic breaker which is a hydraulic hitting apparatus. Thus, the invention is capable of smoothly carrying out strong and weak hitting operations and disabling an idle blow of a hitting rod that is operated by a piston and the cylinder of the breaker through a hitting adjustment valve connected with the direction converting unit.

Description

브레이커의 타격력 조절 및 공타방지 시스템Breaker strike force control and anti-ball system
본 발명은 유압식 타격기기인 유압 브레이커의 실린더 외측에 설치되는 브레이커의 타격력 조절 및 공타방지용 방향 전환부를 원하는 방향으로 회전시켜 설정하는 동작에 의해, 이와 연설된 타격 조절밸브를 통하여 브레이커의 실린더 및 피스톤에 의해 작동되는 타격로드의 공타불가 및 강타, 약타 동작을 원활하게 수행할 수 있도록한 브레이커의 타격력 조절 및 공타방지 시스템에 관한 것으로, 이는 특히 레이커의 실린더 외측에 설치된 타격력 조절 및 공타방지용 방향 전환부를 강타(H) 및 약타(L), 공타방지(X)의 위치로 선택적으로 회전시켜주는 동작에 의해, 상기 타격력 조절 및 공타방지용 방향 전환부와 연설된 공타 및 타격력 조절밸브가 작동되어 고압관로의 고압을 약타 및 강타 전환로를 거쳐 유압 배출관으로 배출시켜 공타 발생을 방지시키며, 이에따라 브레이커의 공타 발생시 브레이커의 프론트 헤드 및 타격로드핀 등과 같은 하부 구조물의 파손을 방지시킬 수 있도록 하며, 상기 공타 및 타격력 조절밸브를 통하여 고압관로에 유입되는 고압을 강타 전환포트 또는 약타 전환포트로 선택적으로 유입시켜, 피스톤의 행정을 조정할 수 있도록 하며, 이에따라 암반의 파쇄와 같이 큰 타격력이 요구되는 파쇄 작업에서는, 피스톤의 행정을 늘려서 타격로드의 타격력을 높여주고, 연암이나 콘크리트 파쇄와 같이 작업시에는 피스톤 행정을 줄여서 타격로드의 타격력을 줄일 수 있도록 하면서, 브레이커의 피스톤에 의해 작동되는 타격로드의 공타불가 및 강타, 약타 동작을 원활하게 수행할 수 있는 브레이커의 타격력 조절 및 공타방지 시스템에 관한 것이다.The present invention by the operation of setting the turning force of the adjustment of the impact force of the breaker and the anti-hit prevention part of the breaker which is installed outside the cylinder of the hydraulic breaker, which is a hydraulic impact machine, to the cylinder and the piston of the breaker through the blow control valve The present invention relates to a breaker's striking force control and anti-striker system for smoothly performing hitting and smashing and smashing of the striking rod operated by the striking rod. By the operation of selectively rotating to the position of the (H) and the weak (L), anti-ball (X), the ball and blow force control valves and the high pressure in the high-pressure pipe is operated by actuating the blow and direction control unit for the blow force control and anti-ball Discharges to hydraulic discharge pipe through weak and smashing conversion path Accordingly, to prevent damage of the lower structure such as the front head and the hitting rod pin of the breaker when the breaker strikes, and the high pressure flowing into the high-pressure pipe through the hitting and hitting force control valves to switch or weakened conversion port In order to adjust the stroke of the piston, it is possible to adjust the stroke of the piston.In the case of the crushing operation requiring a large impact force such as rock break, the piston stroke is increased to increase the impact force of the striking rod and work like soft rock or concrete crushing. It is possible to reduce the stroke of the striking rod by reducing the piston stroke, and to control the striking force of the breaker and the anti-striker system that can smoothly perform the batting, smashing and weakening of the striking rod operated by the piston of the breaker. will be.
일반적으로 알려져있는 유압 브레이커는, 타격로드가 파쇄 목적물을 타격하여 완전히 부숴뜨렸을 경우, 상기 타격로드가 허공에 떠있는 상태가 되며, 이때 상기 타격로드는 자중에 의해 하방으로 내려간 상태가 되기 때문에 타격용 피스톤의 하단과 타격로드의 상단은 서로 이완된 상태가 되는데, 이 경우에도 타격용 피스톤이 왕복작동을 수행하여, 상기 타격용 피스톤은 타격로드를 타격하는 것이 아니라 빈공간을 타격하는 공타 작동을 수행하게 되며, 이와같은 공타의 발생시 피스톤이 프론트헤드의 내벽면에 부딪치면서 충격을 주게되고, 이에따라 상기 프론트헤드 내부에 장착된 조립부품(로드핀, 트러스트링, 프론트 커버등)의 파손이 발생하게 되며, 유압 브레이커의 수명이 크게 저하되는 단점이 있는 것이다.Generally known hydraulic breaker, when the blow rod hits the crushing object and completely crushed, the blow rod is in a floating state in the air, at this time the hitting rod is lowered due to its own weight for the blow The lower end of the piston and the upper end of the striking rod are in a relaxed state. In this case, the striking piston performs a reciprocating operation, so that the striking piston does not strike the striking rod, but performs the striking operation of striking the empty space. When such a hit occurs, the piston hits the inner wall of the front head and impacts it, thereby causing damage to the assembly (rod pin, thrust ring, front cover, etc.) mounted inside the front head. , There is a disadvantage that the life of the hydraulic breaker is greatly reduced.
한편, 대한민국 등록특허 제 10-0675586호에서는, 타격로드의 공타를 방지하기 위하여, 실린더 내부에 바이패스 챔버와, 상,하부 공타 방지턱, 상기 공타 방지턱에서 유압을 저압통로로 보내주기 위한 유압 회수통로를 형성하는 한편, 상기 공타 방지턱턱의 유압이 저압에서 고압으로 변화되는 압력변화를 감지하여 셀렉트 스위치를 온 및 오프 작동시키기 위한 별도의 제1 및 제2 센서를 설치함으로써, 유압 브레이커의 타격로드를 타격하는 피스톤의 불필요한 공타 작동을 방지하도록 한다.On the other hand, in the Republic of Korea Patent No. 10-0675586, in order to prevent the blow of the hitting rod, the hydraulic recovery passage for sending the hydraulic pressure from the bypass chamber, the upper and lower hitting bumps, the low pressure passage in the hitting bumps inside the cylinder On the other hand, by installing a separate first and second sensors for turning on and off the select switch by detecting the pressure change of the hydraulic pressure of the anti-jamming jaw from low pressure to high pressure, the blow rod of the hydraulic breaker Prevent unnecessary strikes on the striking piston.
그러나, 상기와같은 종래의 브레이커 공타방지 구조를 갖는 브레이커의 경우, 실린더 내부에 별도의 상,하부 공타 방지턱과 상기 공타 방지턱의 압력변화를 감지하여 셀렉트 스위치를 온 및 오프 작동시키기 위한 별도의 제1 및 제2 센서를 설치함에 의하여 그 구조가 복잡하게 되며, 극심한 충격력 및 진동이 가해지는 브레이커의 특성상 상기 공타 방지턱 및 제1 및 제2 센서등이 쉽게 파손이 발생하게 되는 문제점이 있는 것이다. However, in the case of the breaker having the conventional breaker anti-battery structure as described above, a separate first for detecting the pressure change of the separate upper and lower hitch bumps and the hitch bumps to turn on and off the select switch. And the structure is complicated by the installation of the second sensor, due to the characteristics of the breaker is subjected to extreme impact force and vibration, there is a problem that the breakout bump and the first and second sensors, etc. easily breakage occurs.
이에 더하여, 상기 유압 브레이커의 경우에는 타격로드를 통한 타격력의 조절이 어렵게되어, 상기 타격로드의 작동이 항상 일정한 상태로 이루어지게 되며, 최근에는 대한민국 공개 특허공보 제 2009-0041823호 에서와 같이, 브레이커의 실린더 내부의 제어밸브에 별도의 자동 조정밸브를 설치함으로써, 상기 자동 조정밸브를 통한 브레이커의 타격력을 자동적으로 조정할 수 있는 반면에, 암반등과 같은 큰 타격력이 요구되지 않는 연암 및 콘크리등을 타격로드를 통한 타격시에도 강타(强打)작동이 빈번하게 유발되며, 브레이커를 통한 타격시 발생되는 극심한 충격력 및 진동에 의해 상기 자동 조정밸브가 쉽게 파손이 발생하게 되는등 많은 문제점이 있었던 것이다.In addition, in the case of the hydraulic breaker, it is difficult to control the striking force through the striking rod, the operation of the striking rod is always made in a constant state, and recently, as in Republic of Korea Patent Publication No. 2009-0041823 By installing a separate automatic adjustment valve on the control valve in the cylinder of the cylinder, the blow force of the breaker through the automatic adjustment valve can be automatically adjusted, while hitting soft rock and concrete that does not require a large blow force such as a rock lamp, etc. Struck operation is frequently caused even when the rod is hit by the rod, and the automatic adjustment valve is easily damaged due to the extreme impact force and vibration generated when the breaker is hit by the breaker.
본 발명은 상기와 같은 종래의 문제점들을 개선시키기 위하여 안출된 것으로서 그 목적은, 브레이커의 실린더 내측으로, 타격로드를 타격하는 피스톤을 제어토록 어큐물레이터(Accumulator)와 연설된 고압관로가 유압 유입관과 연통 연설되고, 상기 고압관로의 일측에는 유압 유출관과 연통 연설된 저압관로가 관로 조정밸브를 개재하여 상호 연통 연설되며, 상기 고압관로의 일단에는 피스톤의 행정을 제어토록 공타 방지관로와 그 단부에 형성된 약타 전환포트 및 강타 전환관로와 그 단부에 형성된 강타 전환포트가 공타 및 타격력 조절밸브를 개재하여 상호 연설되고, 상기 강타 전환관로 상부는 밸브 전환관로를 개재하여 관로 조정밸브와 연통 연설되며, 상기 강타 전환관로 하부는 저압관로를 개재하여 유압 유출관과 연설토록 되며, 이때 상기 공타 및 타격력 조절밸브는 브레이커의 실린더 외측으로 회전 가능하게 설치된 타격력 조절 및 공타방지용 방향 전환부와 연설되어 개,폐 가능하게 설치됨으로써, 상기 브레이커 실린더의 외측에 설치된 타격력 조절 및 공타방지용 방향 전환부를 강타(H) 및 약타(L), 공타방지(X)의 위치로 선택적으로 회전시켜주는 동작에 의해, 상기 타격력 조절 및 공타방지용 방향 전환부와 연설된 공타 및 타격력 조절밸브가 작동되어 고압관로의 고압을 약타 및 강타 전환로를 거쳐 유압 배출관으로 배출시켜 공타 발생을 방지시키며, 이에따라 브레이커의 공타 발생시 브레이커의 프론트 헤드 및 타격로드핀 등과 같은 하부 구조물의 파손을 방지시킬 수 있도록 하며, 상기 공타 및 타격력 조절밸브를 통하여 고압관로에 유입되는 고압을 강타 전환포트 또는 약타 전환포트로 선택적으로 유입시켜, 피스톤의 행정을 조정할 수 있도록 하며, 이에따라 암반의 파쇄와 같이 큰 타격력이 요구되는 파쇄 작업에서는, 피스톤의 행정을 늘려서 타격로드의 타격력을 높여주고, 연암이나 콘크리트 파쇄와 같이 작업시에는 피스톤 행정을 줄여서 타격로드의 타격력을 줄일 수 있도록 하면서, 브레이커의 피스톤에 의해 작동되는 타격로드의 공타불가 및 강타, 약타 동작을 원활하게 수행할 수 있는 브레이커의 타격력 조절 및 공타방지 시스템을 제공하는데에 있다. SUMMARY OF THE INVENTION The present invention has been made to improve the above-mentioned conventional problems, and an object thereof is to provide a hydraulic inlet pipe with an accumulator and a high-pressure pipe, which controls the piston hitting the striking rod inside the cylinder of the breaker. The high pressure pipe is communicated with each other, and the hydraulic outlet pipe and the low pressure pipe communicated with each other are communicated with each other via a pipe control valve. At one end of the high pressure pipe, an anti-outlet pipe and an end thereof are used to control the stroke of the piston. The weak switching port and the swamp switching pipe formed at the end and the swamp switching port formed at the end thereof are mutually communicated through the smashing and striking force regulating valve, and the upper part of the swamp switching pipe communicates with the pipeline control valve via the valve switching pipe. The lower portion of the sluice switching pipe is to be in communication with the hydraulic outflow pipe via the low pressure pipe, wherein the struck And the striking force control valve is installed to be open and closed by the striking force adjusting and anti-ballast turning direction installed rotatably to the outside of the breaker cylinder, thereby striking the striking force adjusting and anti-ballast turning direction installed on the outside of the breaker cylinder ( H) and the blow (L), by the operation to selectively rotate to the anti-ball (X) position, the blow and blow force control valves and the air pressure control valves and the high-pressure pipe to control the high pressure line Discharge to the hydraulic discharge pipe through the weak and sluice conversion path to prevent the occurrence of hitting, and thus to prevent the breakage of the lower structure such as the front head and the hitting rod pin of the breaker when the breaker strikes, and the hit and strike force control valve Swift switching port or weak switch It is possible to selectively adjust the stroke of the piston to adjust the stroke of the piston. Therefore, in the case of a crushing operation requiring a large impact force such as rock crushing, the stroke of the piston is increased to increase the impact force of the striking rod and work such as soft rock or concrete crushing. In order to reduce the stroke force of the striking rod by reducing the piston stroke, it is possible to provide the breaker's striking force control system and anti-strike system that can smoothly perform the smashing and weakening of the striking rod operated by the breaker's piston. It is in
상기와 같은 목적을 달성하기 위한 기술적인 수단으로서 본 발명은, 브레이커의 타격력 조절 및 공타방지 시스템에 있어서,The present invention as a technical means for achieving the above object, in the breaking force control and anti-ballout system of the breaker,
브레이커의 실린더 내측으로, 타격로드를 타격하는 피스톤을 제어토록 어큐물레이터와 연설된 고압관로가 유압 유입관과 연통 연설되고, 상기 고압관로의 일측에는 유압 유출관과 연통 연설된 저압관로가 관로 조정밸브를 개재하여 상호 연통 연설되며, 상기 고압관로의 일단에는 피스톤의 행정을 제어토록 공타 방지관로와 그 단부에 형성된 약타 전환포트 및 강타 전환관로와 그 단부에 형성된 강타 전환포트가 공타 및 타격력 조절밸브를 개재하여 상호 연설되고, 상기 강타 전환관로 상부는 밸브 전환관로를 개재하여 관로 조정밸브와 연통 연설되며, 상기 강타 전환관로 하부는 저압관로를 개재하여 유압 유출관과 연설토록 되는 구성으로 이루어진 것을 특징으로 하는 브레이커의 타격력 조절 및 공타방지 시스템을 마련함에 의한다.Inside the cylinder of the breaker, the high pressure line communicated with the accumulator communicates with the hydraulic inlet pipe so as to control the piston striking the striking rod, and the low pressure line communicated with the hydraulic outlet pipe communicates with one side of the high pressure line. It is communicated with each other via a valve, and at one end of the high-pressure pipeline, an anti-vibration pipeline, a weak conversion port and a slew conversion channel formed at an end thereof, and a slew conversion port formed at an end thereof, control the stroke of the piston. Speaking through the mutual, the upper part of the shunt switching pipe is in communication with the pipeline control valve via the valve switching pipe, the lower portion of the shunt switching pipe is made of a configuration that is to communicate with the hydraulic outlet pipe through the low pressure pipe. By providing a breaker strike force control and anti-ballast system.
또한, 본 발명은 상기 공타 및 타격력 조절밸브는 브레이커의 실린더 외측으로 회전 가능하게 설치된 타격력 조절 및 공타방지용 방향 전환부와 연설되어 개,폐 가능하게 설치되며, 이때 상기 타격력 조절 및 공타방지용 방향 전환부는, 그 주연에 방향 전환을 위한 강타 표시부(H), 약타 표시부(L) 및 공타방지 표시부(X)가 형성되는 것을 특징으로 한다.In addition, the present invention, the hitting and hitting force control valve is installed in the opening and closing of the breaker force control and anti-hit prevention direction switching unit rotatably installed outside the cylinder of the breaker, wherein the hitting force adjustment and anti-hit prevention direction switching unit At the periphery thereof, the slap display unit H, the weak display unit L, and the anti-hit display unit X for changing the direction are formed.
본 발명에 따른 브레이커의 타격력 조절 및 공타방지 시스템에 의하면, 브레이커 실린더의 외측에 설치된 타격력 조절 및 공타방지용 방향 전환부를 강타(H) 및 약타(L), 공타방지(X)의 위치로 선택적으로 회전시켜주는 동작에 의해, 상기 타격력 조절 및 공타방지용 방향 전환부와 연설된 공타 및 타격력 조절밸브가 작동되어 고압관로의 고압을 약타 및 강타 전환로를 거쳐 유압 배출관으로 배출시켜 공타 발생을 방지시키며, 이에따라 브레이커의 공타 발생시 브레이커의 프론트 헤드 및 타격로드핀 등과 같은 하부 구조물의 파손을 방지시킬 수 있도록 하며, 상기 공타 및 타격력 조절밸브를 통하여 고압관로에 유입되는 고압을 강타 전환포트 또는 약타 전환포트로 선택적으로 유입시켜, 피스톤의 행정을 조정할 수 있도록 하며, 이에따라 암반의 파쇄와 같이 큰 타격력이 요구되는 파쇄 작업에서는, 피스톤의 행정을 늘려서 타격로드의 타격력을 높여주고, 연암이나 콘크리트 파쇄와 같이 작업시에는 피스톤 행정을 줄여서 타격로드의 타격력을 줄일 수 있도록 하면서, 브레이커의 피스톤에 의해 작동되는 타격로드의 공타불가 및 강타, 약타 동작을 원활하게 수행할 수 있는 우수한 효과가 있다. According to the breaker force adjustment and anti-battery system of the breaker according to the present invention, the impact force control and the anti-battery direction switching unit installed on the outside of the breaker cylinder selectively rotates to the position of the struck (H), weak (L), anti-ball (X) By the act of making, the blow force and blow force control valves and the blow force control and anti-hit change direction is activated to discharge the high pressure of the high-pressure pipe through the hydraulic and blow switch to the hydraulic discharge pipe to prevent the occurrence of ball strike, accordingly When breaker strikes, it is possible to prevent the damage of the lower structure such as the front head of the breaker and the striking rod pin, and the high pressure introduced into the high-pressure pipe through the strike and the striking force control valve selectively to the smashing switching port or the weak switching port Inflow, so that the stroke of the piston can be adjusted, thus breaking the rock In a crushing operation that requires a large impact force, the stroke of the piston is increased to increase the impact force of the impact rod, and during operation such as soft rock or concrete crushing, the impact of the impact rod can be reduced by reducing the stroke of the piston rod. There is an excellent effect that can be performed smoothly and can not be struck, struck, blow operation of the blow rod is operated by.
본 발명은 특정한 실시예에 관련하여 도시하고 설명하였지만, 이하의 특허청구의 범위에 의해 마련되는 본 발명의 정신이나 분야를 벗어나지 않는 한도내에서 본 발명이 다양하게 개조 및 변화될수 있다는 것을 당업계에서 통상의 지식을 가진자는 용이하게 알수 있음을 밝혀두고자 한다.While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the following claims. Those of ordinary skill will want to know easily.
도 1은 본 발명에 따른 브레이커 타격력 조절 및 공타방지용 방향전환부가 설치된 브레이커의 정면 구성도.1 is a front configuration diagram of a breaker equipped with a breaker blow force adjustment and anti-ballout direction change unit according to the present invention.
도 2는 본 발명의 브레이커 피스톤의 공타불가 상태를 도시한 유압관로의 개략 구성도.Figure 2 is a schematic configuration diagram of a hydraulic line showing a non-battering state of the breaker piston of the present invention.
도 3은 본 발명인 브레이커 피스톤의 강타(强打)상태를 도시한 유압관로의 개략 구성도.Figure 3 is a schematic configuration diagram of a hydraulic line showing a struck state of the breaker piston of the present invention.
도 4는 본 발명인 브레이커 피스톤의 약타상태를 도시한 유압관로의 개략 구성도.Figure 4 is a schematic configuration diagram of a hydraulic pipe showing a weak state of the breaker piston of the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10...브레이커 20...실린더10 ... breaker 20 ... cylinder
30...타격로드 40...피스톤30 ... Strike Rod 40 ... Piston
50...어큐물레이터 60...고압관로50 ... Accumulator 60 ... High pressure pipeline
70...유압 유입관 80...유압 유출관70.Hydraulic inlet pipe 80 ... Hydraulic outlet pipe
90...저압관로 100...관로 조정밸브90 ... low pressure line 100 ... line control valve
110...공타 방지관로 120...약타 전환포트110. Anti-vibration pipeline 120. Weak switch port
130...강타 전환관로 140...강타 전환포트130 ... bang changeover 140 ... bang changeout port
150...공타 및 타격력 조절밸브 160...밸브 전환관로150 ... Vib and Strike Force Control Valves 160 ... Valve Switching Pipes
180...방향 전환부180 ... direction switch
이하, 첨부된 도면에 의거하여 본 발명의 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 브레이커 타격력 조절 및 공타방지용 방향전환부가 설치된 브레이커의 정면 구성도이고, 도 2는 본 발명의 브레이커 피스톤의 공타불가 상태를 도시한 유압관로의 개략 구성도이며, 도3 및 도 4는 본발명인 브레이커 피스톤의 강타(强打)상태 및 약타 상태를 도시한 유압관로의 개략 구성도로서, 브레이커(10)의 실린더(20) 내측으로, 타격로드(30)를 타격하는 피스톤(40)을 제어토록 어큐물레이터(50)와 연설된 고압관로(60)가 유압 유입관(70)과 연통 연설되고, 상기 고압관로(60)의 일측에는 유압 유출관(80)과 연통 연설된 저압관로(90)가 관로 조정밸브(100)를 개재하여 상호 연통 연설토록 된다.1 is a front configuration diagram of a breaker provided with a breaker hitting force control and anti-ballet turning direction according to the present invention, Figure 2 is a schematic configuration diagram of a hydraulic pipe showing a non-ballet state of the breaker piston of the present invention, Figure 3 and 4 is a schematic configuration diagram of a hydraulic line showing a struck state and a struck state of the breaker piston according to the present invention. The piston hitting the striking rod 30 inside the cylinder 20 of the breaker 10 ( The high pressure pipe line 60 communicated with the accumulator 50 to communicate with the hydraulic inlet pipe 70 is communicated with the accumulator 50, and one side of the high pressure pipe line 60 communicates with the hydraulic outlet pipe 80. Low-pressure pipeline 90 is to communicate with each other via the pipeline control valve (100).
또한, 상기 상기 고압관로(60)의 일단에는 피스톤(40)의 행정을 제어토록 공타 방지관로(110)와 그 단부에 형성된 약타 전환포트(120) 및 강타 전환관로(130)와 그 단부에 형성된 강타 전환포트(140)가 공타 및 타격력 조절밸브(150)를 개재하여 상호 연설되고, 상기 강타 전환관로(130) 상부는 밸브 전환관로(160)를 개재하여 관로 조정밸브(100)와 연통 연설되며, 상기 강타 전환관로(130) 하부는 저압관로(90)를 개재하여 유압 유출관(80)과 연설토록 된다.In addition, the one end of the high-pressure pipe line 60 is formed in the smashing conversion port 120 and the sluice conversion pipe line 130 and the end formed at the end of the anti-vibration pipe line 110 and its end to control the stroke of the piston 40. Swift switching port 140 is mutually speaking through the struck and striking force control valve 150, and the upper portion of the swash switching pipe 130 communicates with the pipeline control valve 100 via the valve switching pipe (160) The lower portion of the shunt conversion pipe 130 is provided to communicate with the hydraulic outlet pipe 80 through the low pressure pipe 90.
이때, 상기 공타 및 타격력 조절밸브(150)는 브레이커의 실린더(20) 외측으로 회전 가능하게 설치된 타격력 조절 및 공타방지용 방향 전환부(180)와 연설되어 개,폐 가능하게 설치되며, 상기 타격력 조절 및 공타방지용 방향 전환부(180)는, 그 주연에 방향 전환을 위한 강타 표시부(H), 약타 표시부(L) 및 공타방지 표시부(X)가 형성되는 구성으로 이루어진다.At this time, the smashing and striking force control valve 150 is opened and closed so as to be opened and closed by addressing the directional control unit 180 and the striking force adjusting and rotatable prevention installed rotatably outside the cylinder 20 of the breaker. The anti-hit direction switching unit 180 has a configuration in which a slap display unit H, a weak display unit L, and an anti-ball display unit X for changing directions are formed at the periphery thereof.
이와같은 구성으로 이루어진 본 발명의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effect of the present invention made of such a configuration as follows.
도 1 내지 도 4에 도시한 바와같이, 유압 브레이커(10)의 실린더(20) 외측에 설치되는 브레이커의 타격력 조절 및 공타방지용 방향 전환부(180)의 강타 표시부(H), 약타 표시부(L) 및 공타방지 표시부(X)중 어느 하나를 선택하여 회전시켜 주는 동작에 의해, 이와 연설된 타격 조절밸브(150)를 통하여 브레이커의 타격로드(30)를 피스톤(40)에 의해 공타불가 및 강타, 약타 동작을 선택적으로 원활하게 수행할 경우, 상기 브레이커(10)의 실린더(20) 내측으로, 타격로드(30)를 타격하는 피스톤(40)을 제어토록 어큐물레이터(50)와 연설된 고압관로(60)가 유압 유입관(70)과 연통 연설되어, 상기 유압 유입관(70)을 통해 유압이 고압관로(60)로 유입토록 된다.As shown in FIGS. 1 to 4, the striking display portion H and the weakness display portion L of the breaker direction control unit 180 for adjusting the striking force of the breaker installed outside the cylinder 20 of the hydraulic breaker 10. And by the operation of selecting any one of the anti-ballout display (X) to rotate, the strike rod 30 of the breaker through the blow control valve 150 is not struck by the piston (40) In the case of selectively and smoothly performing the weakening operation, the high pressure pipe is introduced into the cylinder 20 of the breaker 10 to the accumulator 50 to control the piston 40 striking the striking rod 30. 60 is communicated with the hydraulic inlet pipe 70 so that the hydraulic pressure is introduced into the high pressure pipe line 60 through the hydraulic inlet pipe 70.
이때, 상기 유압 브레이커(10)의 실린더(20) 내측에 설치되는 피스톤(40)의 공타불가(X) 모드를 수행할 경우에는 도 2에 도시한 바와같이, 실린더 내부의 공타 및 타격력 조절밸브(150)가 개방되어, 유입되는 유압이 고압관로(60)와 그 일단에 피스톤(40)의 행정을 제어하는 공타 방지관로(110)를 통해 약타 전환포트(120)를 통과한다.At this time, when performing the non-battery (X) mode of the piston 40 which is installed inside the cylinder 20 of the hydraulic breaker 10, as shown in Figure 2, the hitting and blow force control valve in the cylinder ( 150 is opened, the hydraulic pressure flowing through the weak pressure conversion port 120 through the high-pressure pipe line 60 and the anti-ballast pipe line 110 for controlling the stroke of the piston 40 at one end thereof.
계속해서, 상기 약타 전환포트(120)를 통과한 유압은 저압관로(90)를 따라 유압 유출관(80)으로 유출토록 됨으로써, 상기 피스톤(40)의 공타 상태가 정지될 수 있도록 한다.Subsequently, the hydraulic pressure passing through the weak switch port 120 is discharged to the hydraulic outlet pipe 80 along the low pressure pipe path 90 so that the idle state of the piston 40 can be stopped.
또한, 상기 피스톤(40)의 강타(H) 모드를 수행할 경우에는 도 3에 도시한 바와같이, 실린더 내부의 공타 및 타격력 조절밸브(150)가 공타 방지관로(110)를 차단시켜, 유압이 고압관로(60)와 강타 전환포트(140)를 거쳐서 밸브 전환관로(160)를 따라 관로 조정밸브(100)로 유입되며, 이때 피스톤(40)은 최대의 행정으로 승강 및 하강하여 강타(强打) 동작을 수행할 수 있도록 한다. In addition, when performing the struck (H) mode of the piston 40, as shown in FIG. 3, the ball and blow force control valve 150 inside the cylinder blocks the ball prevention line 110, the hydraulic pressure The high pressure pipe (60) and the swamp switching port (140) flows into the pipeline control valve (100) along the valve switching pipe (160). At this time, the piston (40) is raised and lowered to the maximum stroke and swung (强 打). ) To perform the operation.
이에 더하여, 상기 피스톤(40)의 약타(X) 모드를 수행할 경우에는 도 4에 도시한 바와같이, 실린더 내부의 공타 및 타격력 조절밸브(150)가 강타 전환관로(130)를 차단시켜, 유압이 약타 전환포트(120)를 거쳐 공타 방지관로(110)를 통과한 후, 밸브 전환관로(160)를 따라 관로 조정밸브(100)로 유입되며, 이때 피스톤(40)은 최소의 행정으로 승강 및 하강하여 약타(弱打) 동작을 수행할 수 있도록 한다. In addition, when performing the piston (X) mode of the piston 40, as shown in Figure 4, the slewing and impact force control valve 150 inside the cylinder blocks the shunt switching pipe 130, the hydraulic pressure After passing through the anti-vibration pipe line 110 through the weak switching port 120, the flow path is introduced into the pipeline control valve 100 along the valve switching pipe 160, wherein the piston 40 is raised and lowered with a minimum stroke. It descends to enable the yak motion.
따라서, 상기 공타 및 타격력 조절밸브(150)를 통하여 고압관로(60)에 유입되는 유압이 저압관로(90)를 따라 유압 유출관(80)으로 유출되어, 피스톤(40)의 공타 방지는 물론, 상기 유압이 강타 전환포트(140) 또는 약타 전환포트(120)로 선택적으로 유입시켜, 피스톤(40)의 타격 행정을 조정할 수 있도록 하며, 이에따라 암반의 파쇄와 같이 큰 타격력이 요구되는 파쇄 작업에서는, 피스톤(40)의 행정을 늘려서 타격로드의 타격력을 높여주고, 연암이나 콘크리트 파쇄와 같이 작업시에는 피스톤(40) 행정을 줄여서 타격로드의 타격력을 줄일 수 있도록 하면서, 브레이커의 피스톤(40)에 의해 작동되는 타격로드(30)의 공타불가 및 강타, 약타 동작을 원활하게 수행할 수 있는 것이다.Therefore, the hydraulic pressure flowing into the high pressure pipe line 60 through the blow and strike force control valve 150 flows out into the hydraulic outlet pipe 80 along the low pressure pipe line 90, thereby preventing the blow of the piston 40. The hydraulic pressure selectively flows into the swash switching port 140 or the weak switching port 120 so that the stroke stroke of the piston 40 can be adjusted. Accordingly, in a crushing operation requiring a large impact force such as crushing rock, Increasing the stroke of the piston 40 to increase the impact force of the impact rod, while reducing the piston 40 stroke to reduce the impact force of the impact rod during operation, such as soft rock or concrete crushing, by the piston 40 of the breaker It is possible to smoothly perform the non-batting and smashing, smashing operation of the blow rod 30 is operated.
상기와 같은 브레이커의 타격력 조절 및 공타방지 시스템에 의하면, 브레이커 실린더의 외측에 설치된 타격력 조절 및 공타방지용 방향 전환부를 선택적으로 회전시켜주는 동작에 의해, 공타 발생을 방지시키며 이에따라 브레이커의 공타 발생시 브레이커의 프론트 헤드 및 타격로드핀 등과 같은 하부 구조물의 파손을 방지시킬 수 있도록 하며, 암반의 파쇄와 같이 큰 타격력이 요구되는 파쇄 작업에서는, 피스톤의 행정을 늘려서 타격로드의 타격력을 높여주고, 연암이나 콘크리트 파쇄와 같이 작업시에는 피스톤 행정을 줄여서 타격로드의 타격력을 줄일 수 있도록 하면서, 브레이커의 피스톤에 의해 작동되는 타격로드의 공타불가 및 강타, 약타 동작을 원활하게 수행할 수 있는 우수한 효과가 있다.According to the above-described breaker force control and anti-ballast system, by selectively rotating the impact force control and anti-battery direction switching unit installed on the outside of the breaker cylinder, to prevent the occurrence of the ball hitting the breaker accordingly, the front of the breaker To prevent damage to lower structures such as heads and striking rod pins, and in shredding operations where large striking force is required, such as rock breaking, increase the stroke of the piston to increase the striking force of the striking rod, and When working together, it is possible to reduce the stroke force of the hitting rod by reducing the piston stroke, while having an excellent effect of smoothly performing the non-batting and smashing of the hitting rod actuated by the piston of the breaker.

Claims (3)

  1. 브레이커의 타격력 조절 및 공타방지 시스템에 있어서,In the breaker strike force control and anti-hit system,
    브레이커의 실린더 내측으로, 타격로드를 타격하는 피스톤을 제어토록 어큐물레이터와 연설된 고압관로가 유압 유입관과 연통 연설되고, 상기 고압관로의 일측에는 유압 유출관과 연통 연설된 저압관로가 관로 조정밸브를 개재하여 상호 연통 연설되며, 상기 고압관로의 일단에는 피스톤의 행정을 제어토록 공타 방지관로와 그 단부에 형성된 약타 전환포트 및 강타 전환관로와 그 단부에 형성된 강타 전환포트가 공타 및 타격력 조절밸브를 개재하여 상호 연설되고, 상기 강타 전환관로 상부는 밸브 전환관로를 개재하여 관로 조정밸브와 연통 연설되며, 상기 강타 전환관로 하부는 저압관로를 개재하여 유압 유출관과 연설토록 되는 구성으로 이루어진 것을 특징으로 하는 브레이커의 타격력 조절 및 공타방지 시스템.Inside the cylinder of the breaker, the high pressure pipe routed to the accumulator communicates with the hydraulic inlet pipe so as to control the piston striking the striking rod. On one side of the high pressure pipe line, the low pressure pipe communicated with the hydraulic outlet pipe is adjusted. It is communicated with each other via a valve, and at one end of the high-pressure pipeline, an anti-vibration pipeline, a weak conversion port and a slew conversion channel formed at an end thereof, and a slew conversion port formed at an end thereof, control the stroke of the piston. Speaking through the mutual, the upper part of the shunt switching pipe is in communication with the pipeline control valve via the valve switching pipe, the lower portion of the shunt switching pipe is made of a configuration that is to communicate with the hydraulic outlet pipe through the low pressure pipe. Breaker force control and anti-ball system.
  2. 제 1항에 있어서, 상기 공타 및 타격력 조절밸브는, 브레이커의 실린더 외측으로 회전 가능하게 설치된 타격력 조절 및 공타방지용 방향 전환부와 연설되어 개,폐 가능하게 설치되는 것을 특징으로 하는 브레이커의 타격력 조절 및 공타방지 시스템.According to claim 1, The struck and blow force control valve, the blow force control and breaker force control, characterized in that the opening and closing of the breaker, characterized in that the speaker is installed so as to rotate to the outside of the cylinder of the breaker rotatable anti-ballout Anti-ballast system.
  3. 제 1항 또는 제 2항에 있어서, 상기 타격력 조절 및 공타방지용 방향 전환부는, 그 주연에 방향 전환을 위한 강타 표시부(H), 약타 표시부(L) 및 공타방지 표시부(X)가 형성되는 것을 특징으로 하는 브레이커의 타격력 조절 및 공타방지 시스템.The method of claim 1 or claim 2, wherein the blow force control and anti-hit direction switching unit, the swivel display portion (H), the weak display portion (L) and the anti-ball display portion (X) for changing the direction is formed on the periphery Breaker force control and anti-ball system.
PCT/KR2010/007892 2009-11-11 2010-11-10 System for preventing idle blow and adjusting hitting power of breaker WO2011059217A2 (en)

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KR20110051975A (en) 2011-05-18
CN102686819A (en) 2012-09-19

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