WO2015080439A1 - 저소음형 유압 타격 장치 - Google Patents
저소음형 유압 타격 장치 Download PDFInfo
- Publication number
- WO2015080439A1 WO2015080439A1 PCT/KR2014/011293 KR2014011293W WO2015080439A1 WO 2015080439 A1 WO2015080439 A1 WO 2015080439A1 KR 2014011293 W KR2014011293 W KR 2014011293W WO 2015080439 A1 WO2015080439 A1 WO 2015080439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impact bar
- piston
- striking device
- low noise
- receiving portion
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 1
- 230000003584 silencer Effects 0.000 claims 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000011358 absorbing material Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/11—Arrangements of noise-damping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/02—Percussive tool bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
-
- 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
-
- 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
- B25D9/04—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B1/00—Percussion drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0003—Details of shafts of percussive tool bits
- B25D2217/0007—Shaft ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0011—Details of anvils, guide-sleeves or pistons
- B25D2217/0015—Anvils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0011—Details of anvils, guide-sleeves or pistons
- B25D2217/0023—Pistons
Definitions
- the present invention relates to a hydraulic striking device, and in particular, the impact bar accommodated inside the piston is formed to be inclined so as not to come into contact with the inside of the piston to prevent the occurrence of cracks and to install a sound absorbing material or heat sink inside the piston or outside the impact bar. It is a low-noise hydraulic striking device that can reduce noise and improve heat dissipation performance.
- Such a hydraulic striking device is disposed in front of the housing 1, the cylinder 2, the piston 3, and the cylinder 2 inherent in the housing 1 and operating hydraulically or pneumatically, as shown in FIG. 1. It is hit by the piston (3) and comprises a striking portion (4) having a pointed tip is formed so as to perform excavation or crushing operation, the piston (3) connected to the cylinder during the operation such as excavation by hydraulic When hitting the striking part (4), noise and vibration are severely generated, and noise generation is more than 80 decibels, causing severe discomfort to workers or residents and adversely affect health.
- the end of the piston 3 of the cylinder 2 of the cylinder 2, which is hydraulically or pneumatically operated in the housing 1, has a constant diameter and depth of the receiving portion 5. Is formed, and the receiving portion 5 is inserted into the impact bar (6) mounted on the striking portion (4).
- the impact bar 6 which is a part of the striking part 4 is inserted in the piston 3.
- the outer surface of the impact bar and the inner surface of the piston may be in contact with each other to generate cracks.
- the striking part may move forward and backward in a state inclined at a predetermined angle without being moved back and forth in a precise linear direction.
- the present invention is to solve the above-mentioned problems by forming the impact bar and the piston inclined so as not to scratch each other while forming a good heat dissipation to prevent the occurrence of cracks and improve the durability and strength low noise hydraulic striking device
- the purpose is to provide.
- a hydraulic striking device comprising an impact bar (200) formed in the striking portion 300 is inserted into the receiving portion 120 inside the piston 100, the receiving portion 120 Both sides of the inner side are inclined to increase in diameter toward the impact bar 200, the impact bar 200 is accommodated in the receiving portion 120 is in contact with the piston 100 as the receiving portion It is characterized in that the low-noise hydraulic striking device is formed so as to decrease in the direction toward (120) spaced apart by a certain distance from both sides of the inside of the receiving portion (120).
- the contact portion 130 which contacts the impact bar 200 as the bottom surface of the receiving portion 120 protrudes a predetermined height toward the impact bar 200, but both sides of the contact portion 130 are recessed at a predetermined curvature. It is also possible that the buffer groove 140 is formed.
- the sound absorbing material 160 may be installed on one side of the inside of the receiving part 120.
- the outer surface of the impact bar 200 may be formed with a plurality of noise reduction step 220.
- the contact surface 230 facing the bottom surface 110a of the piston 100 as the outer surface of the impact bar 200 when the contact portion 130 of the receiving portion 120 hits the impact bar 200. ) May be formed to be spaced apart from the bottom surface 110a by a predetermined interval.
- the buffer 400 may also include a spring.
- the buffer 400 may be a hollow cylindrical shape of an elastic material having a specific cross section.
- the height of the heat sink 500 may be formed to be different from each other.
- the impact bar and the inside of the piston are inclined to prevent scratches due to mutual contact, thereby preventing cracks, and improving heat dissipation performance, thereby improving durability and strength.
- 1 and 2 is a conceptual diagram illustrating a conventional hydraulic striking device.
- FIG. 3 is a conceptual view illustrating a state in which a piston and a striking part are separated from each other as a striking device according to an embodiment of the present invention.
- FIG. 4 is a conceptual view showing a state in which the piston and the striking unit are coupled to each other as a striking device according to an embodiment of the present invention.
- FIG. 3 is a conceptual view showing a state in which the piston and the striking unit are separated from each other as a striking device according to an embodiment of the present invention
- FIG. 4 is a piston and the striking unit coupled to each other as a striking device according to an embodiment of the present invention. It is a conceptual diagram showing a state.
- Low noise type hydraulic striking device 10 is formed in the striking portion 300, as shown in Figure 3 impact bar 200 is inserted into the receiving portion 120 in the piston 100 ) Is the same as before.
- an impact bar 200 protrudes from the end of the hitting part 300 which serves to crush the work object, and the impact bar 200 is inserted into the receiving part 120 inside the piston 100.
- both sides of the inner side of the receiving portion 120 is formed to be inclined so as to increase in diameter toward the impact bar 200, as shown for the thickness of the receiving portion 120 impact bar ( As the thinner toward the direction 200, the inclined surface 150 is formed as shown.
- the impact bar 200 accommodated in the receiving portion 120 is formed to decrease in diameter toward the receiving portion 120 is formed so as to be spaced apart from both sides of the inside of the receiving portion 120 by a specific distance.
- the outer surface and the receiving portion 120 of the impact bar 200 as a whole The inner surface of the) is formed to be spaced apart by a predetermined distance.
- the impact bar 200 and the inner part of the receiving part 120 do not come into contact with each other, thereby preventing scratches as in the prior art. It can solve the problem of crack generation, such as can improve the durability and strength.
- the thickness of the piston 100 is reduced by the inclined surface 150 inside the piston 100, the weight is also reduced, thereby improving durability.
- the contact portion 130 is in contact with the impact bar 200 as the bottom surface of the receiving portion 120 is projected a predetermined height toward the impact bar 200 as shown in Figure 3 the contact portion 130 Both sides can also form a buffer groove 140 grooved with a predetermined curvature.
- both sides of the contact portion 130 is provided with a buffer groove 140 grooved with a predetermined curvature to suppress the transmission of shock waves during impact. That is, when the buffer groove 140 is absent, the shock wave due to the impact of the contact portion 130 and the impact bar 200 is propagated to all parts of the piston 100, the groove portion 140 of the present invention of the shock wave The strength can be improved by suppressing propagation.
- the groove portion 140 must be formed to have a predetermined curvature as described above to prevent stress concentration due to the rapid cross-sectional change, the groove portion 140 is shown in the left and the contact portion 130 as shown It may be formed on the right side (Fig. 141, 142).
- the sound absorbing material 160 may be installed. That is, the shock bar 200 is inserted into the receiving portion 120, the impact is generated noise, the noise member 160 is installed on one side inside the receiving portion 120 to prevent the noise propagation. It is.
- the sound absorbing material 160 may use various materials and shapes as are well known.
- the outer surface of the impact bar 200 may form a plurality of stepping 220 for noise reduction.
- noise may be mutually canceled to increase the noise reduction effect.
- the step 220 may be shaped like a staircase, may have a pointed tip, and may have a curved end.
- the noise attenuation step 220 of the present invention aims to reduce noise by mutually canceling noises, and as long as the object is achieved, the noise attenuation step 220 may have any shape. It belongs to the scope of the invention.
- the contact surface 230 facing the bottom surface 110a of the piston 100 as the outer surface of the impact bar 200. May be formed to be spaced apart from the bottom surface 110a by a predetermined interval.
- the impact bar 200 is inserted into the receiving portion 120 of the piston 100 and the piston 100 when the contact portion 130 of the piston 100 strikes the impact bar 200.
- the contact surface 230 of the impact bar 200 facing the bottom surface 110a of the may be formed to be spaced apart from each other by a predetermined interval to attenuate the noise when the noise from the receiving portion 120 is emitted to the outside.
- the buffer 400 may also include a spring.
- the bottom surface 110a of the piston 100 and the contact surface 230 of the impact bar 200 are formed to be spaced apart from each other, but the bottom surface 110a is formed by the elastic deformation of the piston 100 during impact. Since the contact surface 230 may be hit and an impact is generated, the shock may be alleviated by the buffer 400 using the spring.
- the above-described shock absorbing unit 400 may use a spring as shown, or may use a hollow cylindrical shape of an elastic material having a specific cross section.
- Such a shock absorbing portion 400 can mitigate the above-described shock to suppress the generation of noise and improve durability.
- FIG. 4 may include a plurality of heat sinks 500 is installed on the inner surface of the receiving portion 120 or the outer surface of the impact bar (200).
- the heat sink 500 refers to having a large surface area and dissipating heat more easily as is widely known.
- the plurality of heat sinks 510 and 520 are disposed on the inner surface of the accommodating part 120 or the outer surface of the impact bar 200, so that the piston 100 or the impact bar 200 The heat generated is more easily released to the receiving portion 120 side.
- the heat sink 500 of the present invention as described above, the heat of the piston 100 or the impact bar 200 may be effectively removed to improve strength and increase durability.
- the height of the heat sink 500 may be formed to be different from each other. That is, as described above, the heat sink 500 is formed on the inner surface of the accommodating part 120 or the outer surface of the impact bar 200. At this time, the space is a space in which noise propagates. If the height of the 500 is formed to be different from each other, noise is mutually canceled to increase the noise reduction effect.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
Claims (9)
- 타격부(300)에 형성되어 피스톤(100)내부의 수용부(120)에 삽입되는 충격 바아(200)를 포함하는 유압 타격 장치에 있어서,상기 수용부(120)의 내부 양 측면은 상기 충격 바아(200) 방향으로 갈수록 직경이 증가하도록 경사지게 형성되고,상기 충격 바아(200)는 상기 수용부(120)에 수용되어 피스톤(100)과 접촉되는 것으로서 상기 수용부(120)방향으로 갈수록 직경이 감소하도록 형성되어 상기 수용부(120) 내부 양 측면과 특정 거리만큼 이격된 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제1항에 있어서,상기 수용부(120)의 바닥면으로서 상기 충격 바아(200)에 접촉하는 접촉부(130)는 상기 충격 바아(200) 방향으로 일정 높이 돌출되되 상기 접촉부(130) 양측은 일정 곡률로 요홈된 완충홈(140)이 형성되는 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제1항에 있어서,상기 수용부(120) 내부 일 측면에는 소음재(160)가 설치된 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제1항에 있어서,상기 충격 바아(200)의 외측면은 다수 개의 소음 감쇄용 단턱(220)이 형성되는 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제2항에 있어서,상기 수용부(120)의 접촉부(130)가 충격 바아(200)를 타격할 때 상기 충격 바아(200)의 외측면으로서 상기 피스톤(100)의 바닥면(110a)과 마주보는 접촉면(230)은 상기 바닥면(110a)과 일정 간격 이격되도록 형성되는 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제5항에 있어서,상기 바닥면(110a)과 접촉면(230)사이에 배치되는 완충부(400)를 더 포함하되,상기 완충부(400)는 스프링을 포함하는 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제5항에 있어서,상기 바닥면(110a)과 접촉면(230)사이에 배치되는 완충부(400)를 더 포함하되,상기 완충부(400)는 특정 단면을 가지는 탄성 재질의 중공의 원통형상인 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제5항에 있어서,상기 수용부(120) 내측면 또는 상기 충격 바아(200)의 외측면에 설치되는 다수 개의 히트 싱크(500)를 포함하는 것을 특징으로 하는 저소음형 유압 타격 장치.
- 제8항에 있어서,상기 히트 싱크(500)의 높이는 상호 상이하게 형성된 것을 특징으로 하는 저소음형 유압 타격 장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/027,460 US10363652B2 (en) | 2013-11-28 | 2014-11-21 | Low-noise hydraulic hammer |
EP14865278.7A EP3075945B1 (en) | 2013-11-28 | 2014-11-21 | Low-noise hydraulic hammer |
JP2016545708A JP6089154B2 (ja) | 2013-11-28 | 2014-11-21 | 低騷音型油圧打撃装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130146192A KR101412092B1 (ko) | 2013-11-28 | 2013-11-28 | 저소음형 유압 타격 장치 |
KR10-2013-0146192 | 2013-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015080439A1 true WO2015080439A1 (ko) | 2015-06-04 |
Family
ID=51740626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/011293 WO2015080439A1 (ko) | 2013-11-28 | 2014-11-21 | 저소음형 유압 타격 장치 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10363652B2 (ko) |
EP (1) | EP3075945B1 (ko) |
JP (1) | JP6089154B2 (ko) |
KR (1) | KR101412092B1 (ko) |
WO (1) | WO2015080439A1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113967498A (zh) * | 2021-09-03 | 2022-01-25 | 杭州宏德智能装备科技有限公司 | 一种用于固定式液压破碎机的环保型液压锤 |
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- 2014-11-21 US US15/027,460 patent/US10363652B2/en active Active
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Also Published As
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JP2016531761A (ja) | 2016-10-13 |
JP6089154B2 (ja) | 2017-03-01 |
KR101412092B1 (ko) | 2014-07-02 |
EP3075945B1 (en) | 2020-07-22 |
EP3075945A1 (en) | 2016-10-05 |
US20160250739A1 (en) | 2016-09-01 |
EP3075945A4 (en) | 2017-07-26 |
US10363652B2 (en) | 2019-07-30 |
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