US3789930A - Method for reducing noise of a diesel pile hammer - Google Patents

Method for reducing noise of a diesel pile hammer Download PDF

Info

Publication number
US3789930A
US3789930A US00219008A US3789930DA US3789930A US 3789930 A US3789930 A US 3789930A US 00219008 A US00219008 A US 00219008A US 3789930D A US3789930D A US 3789930DA US 3789930 A US3789930 A US 3789930A
Authority
US
United States
Prior art keywords
combustion chamber
ram
anvil
cylinder
auxiliary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00219008A
Other languages
English (en)
Inventor
S Nishimura
M Ishizaki
Y Seo
S Akima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Application granted granted Critical
Publication of US3789930A publication Critical patent/US3789930A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B71/00—Free-piston engines; Engines without rotary main shaft
    • F02B71/02—Starting
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/12—Drivers with explosion chambers
    • E02D7/125—Diesel drivers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S173/00—Tool driving or impacting
    • Y10S173/02—Sound muffling

Definitions

  • Another object of this invention is to provide a method of reducing the noise characteristically generated by a diesel pile hammer in the operation of the same.
  • a ram which has been pushed upward by combustion gases drops in the next moment due to its gravity while compressing an amount of fresh air in a diesel cylinder.
  • the temperature of the compressed air reaches the natural ignition temperature of the fuel being injected into the compressed air.
  • the combustion stroke takes place, exerting a driving force on the bottom end face of the diesel cylinder or the anvil under the reaction of the ram being pushed upward by the combustion gases.
  • the ram in the conventional diesel pile hammers, the ram usually comes into direct contact with the bottom end face of the diesel cylinder in a relatively strong blow-striking manner before the ram is pushed back upward by the combustion gases, whereby a loud noise due to the mechanical pounding is generated.
  • the noise due to the mechanical pounding is more serious in a starting period of the diesel pile hammer wherein the diesel cylinder and the ram are still cold or in the seasons of cold atmospheric temperature, because in such cases, the compressed air takes longer to attain the natural ignition temperature of the fuel, and therefore, the cushioning of the ram by the combustion gases at the lowest end of the stroke is less effective.
  • the object of this invention is accomplished by constructing a diesel pile hammer in such a manner that mechanical contact of the ram with the bottom end face of the diesel cylinder or anvil is always avoided regardless of the operating condition of the pile hammer, the atmospheric temperature and/or pressure, the kind of fuel used, and the like, without sacrificing the high operating efficiency of the diesel cycle of the diesel pile hammer.
  • the effective volume of the combustion chamber be varied according to the operating condition of the pile hammer, the atmospheric temperature a-nd/or pressure, the kind of fuel used or other conditions, to obtain the highest operating efficiency of the diesel cycle of the diesel pile hammer.
  • the effective volume of the combustion chamber is varied by fluidly connecting the combustion chamber with an auxiliary combustion chamber through a controlled throttling means.
  • the effective volume of the combustion chamber is varied by fluidly connecting the combustion chamber with an auxiliary combustion chamber of variable volume.
  • FIG. 1 is a longitudinal sectional view of an embodiment of a diesel pile hammer constructed according to this invention.
  • FIG. 2 is a similar view to that shown in FIG. 1, illustrating a second embodiment of a diesel pile hammer, constructed according to this invention.
  • a ram 1 of which only itslower essential portion is shown, is adapted to freely reciprocate vertically in a diesel cylinder 1.
  • the lower end face of the cylinder 2 is defined by the upper end face of an anvil 3 for driving a pile P downward.
  • a space 4 between the ram 1 and the anvil 3 in the cylinder 2 operates as the combustion chamber for the diesel cycle of the pile hammer, which is supplied with fresh air as well as exhausted of combustion gases through a port 5 according to the reciprocation of the ram 1.
  • a fuel nozzle 6 opens into a bottom portion of the combustion chamber 4, being supplied with fuel from a fuel pump 7.
  • auxiliary combustion chamber 8 Adjacent the bottom end of the combustion chamber 4, there is provided an auxiliary combustion chamber 8, which is fluidly connected with the combustion chamber 4 through a throttle opening 9 controlled by a throttling valve 10.
  • the diesel pile hammer shown in FIG. 1 operates as follows:
  • the port 5 is first covered by the ram, and thereafter compression of the air contained in the combustion chamber 4 is effected.
  • the temperature of the air rises and here it is so adapted that the temperature exceeds the natural ignition temperature of the fuel before the ram 1 reaches the lowermost position in the cylinder 2.
  • the fuel pump-7 is operated to inject a predetermined amount of fuel from the nozzle 6 into the combustion chamber 4. Then combustion takes place and the ram 1 is again pushed upward while supporting the reaction of the combustion force being applied to the anvil 3.
  • the valve is tightened to isolate the auxiliary combustion chamber 8 from the combustion chamber 4, whereby theeffective volume of the combustion chamber is reduced to the primary combustion chamber 4.
  • the air is compressed with a higher ratio than in the larger volume ofthe combustion chamber which can be obtained by opening the combustion chamber 4 to the auxiliary combustion chamber 8 through a loosened throttle opening 9. Therefore, an air temperature which is high enough to cause natural ignition of fuel is obtained before the ram 1 reaches the lowermost position of the downward stroke even when the combustion chamber is surrounded by relatively cold walls.
  • the ram 1 may be prevented from coming into contact with the anvil 3 such that it would generate a loud noise due to the mechanical contact therebetween.
  • the temperature of the ram, cylinderv and anvil reaches a normal operating temperature. Then, the valve 10 is loosened to properly increase the effective volume of the combustion chamber so that the stroke of the ram is elongated to its maximum extent without coming into direct contact with the anvil, to obtain the highest efficiency of the diesel cycle. Since, in this condition, the air is confined in relatively hot walls defining the combustion chamber, the air reaches the natural ignition temperature of fuel with a lower compression ratio than ever.
  • FIG. 2 shows another embodiment of the diesel pile hammer according to this invention, wherein the effective volume of the combustion chamber is varied by changing the effective volume of the auxiliary combustion chamber 8, the latter volume being changed by displacing a piston l 1 along the cylindrical wall of the auxiliary combustion chamber 8.
  • said throttling valve comprises a variable size opening between said auxiliary and said main combustion chambers, and further including the step of: continuously varying the size of said opening to continuously adjust said throttling means during repeated descent of said ram.
  • said throttling valve comprises a piston slidably displaceable within said auxiliary combustion chamber for varying the volume of said auxiliary combustion chamber, and further including the step-of:

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US00219008A 1971-01-21 1972-01-19 Method for reducing noise of a diesel pile hammer Expired - Lifetime US3789930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971002045U JPS5340883Y2 (cg-RX-API-DMAC10.html) 1971-01-21 1971-01-21

Publications (1)

Publication Number Publication Date
US3789930A true US3789930A (en) 1974-02-05

Family

ID=11518340

Family Applications (1)

Application Number Title Priority Date Filing Date
US00219008A Expired - Lifetime US3789930A (en) 1971-01-21 1972-01-19 Method for reducing noise of a diesel pile hammer

Country Status (5)

Country Link
US (1) US3789930A (cg-RX-API-DMAC10.html)
JP (1) JPS5340883Y2 (cg-RX-API-DMAC10.html)
DE (1) DE2202304B2 (cg-RX-API-DMAC10.html)
GB (1) GB1319213A (cg-RX-API-DMAC10.html)
NL (1) NL145305B (cg-RX-API-DMAC10.html)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897851A (en) * 1974-06-26 1975-08-05 P & Z Company Inc Muffler for two cycle diesel pile hammer
US4098356A (en) * 1976-02-20 1978-07-04 Bsp International Foundations Limited Pile drivers
US4497376A (en) * 1982-08-02 1985-02-05 Mkt Geotechnical Systems Interchangeable ram diesel pile
RU2257563C2 (ru) * 2003-02-19 2005-07-27 Федеральное государственное унитарное научно-производственное предприятие "Геологоразведка" Способ определения состояния свай и устройство для его реализации
RU2364852C1 (ru) * 2008-01-09 2009-08-20 Учреждение Ханты-Мансийского автономного округа-Югры Россия "Югорский научно-исследовательский институт информационных технологий" Способ определения упругих характеристик сваи и вмещающего грунта
US20100018733A1 (en) * 2007-03-09 2010-01-28 Jasper Stefan Winkes Pile-driving method and device
US20100059241A1 (en) * 2007-03-09 2010-03-11 Jasper Stefan Winkes Pile-driving device
US7694747B1 (en) * 2002-09-17 2010-04-13 American Piledriving Equipment, Inc. Preloaded drop hammer for driving piles
US20110162859A1 (en) * 2010-01-06 2011-07-07 White John L Pile driving systems and methods employing preloaded drop hammer
CN102900084A (zh) * 2011-05-20 2013-01-30 美国打桩设备公司 用于控制柴油锤的系统和方法
US8434969B2 (en) 2010-04-02 2013-05-07 American Piledriving Equipment, Inc. Internal pipe clamp
US20150129271A1 (en) * 2013-11-12 2015-05-14 Delmag Gmbh & Co. Kg Diesel hammer pile driver
US9255375B2 (en) 2009-05-27 2016-02-09 American Piledriving Equipment, Inc. Helmet adapter for pile drivers
US9759124B2 (en) 2013-11-12 2017-09-12 Delmag Gmbh & Co. Kg Pile hammer
US10273646B2 (en) 2015-12-14 2019-04-30 American Piledriving Equipment, Inc. Guide systems and methods for diesel hammers
US10538892B2 (en) 2016-06-30 2020-01-21 American Piledriving Equipment, Inc. Hydraulic impact hammer systems and methods
US12129623B2 (en) 2021-03-31 2024-10-29 American Piledriving Equipment, Inc. Segmented ram systems and methods for hydraulic impact hammers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5428255Y2 (cg-RX-API-DMAC10.html) * 1975-09-10 1979-09-11
DE2707371C3 (de) * 1977-02-21 1981-05-21 Mitsubishi Jukogyo K.K., Tokyo Explosions-Pfahlramme

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751281A (en) * 1927-06-29 1930-03-18 Gernandt Motor Corp Engine
US2054562A (en) * 1933-10-02 1936-09-15 Porsche Gmbh Injection internal combustion engine
US2093634A (en) * 1935-07-07 1937-09-21 Cordes Hugo Diesel power hammer
US3303892A (en) * 1963-06-24 1967-02-14 Kobe Steel Ltd Fuel atomization device in diesel pile driver
US3679005A (en) * 1969-10-24 1972-07-25 Ishikawajima Harima Heavy Ind Diesel hammer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751281A (en) * 1927-06-29 1930-03-18 Gernandt Motor Corp Engine
US2054562A (en) * 1933-10-02 1936-09-15 Porsche Gmbh Injection internal combustion engine
US2093634A (en) * 1935-07-07 1937-09-21 Cordes Hugo Diesel power hammer
US3303892A (en) * 1963-06-24 1967-02-14 Kobe Steel Ltd Fuel atomization device in diesel pile driver
US3679005A (en) * 1969-10-24 1972-07-25 Ishikawajima Harima Heavy Ind Diesel hammer

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897851A (en) * 1974-06-26 1975-08-05 P & Z Company Inc Muffler for two cycle diesel pile hammer
US4098356A (en) * 1976-02-20 1978-07-04 Bsp International Foundations Limited Pile drivers
US4497376A (en) * 1982-08-02 1985-02-05 Mkt Geotechnical Systems Interchangeable ram diesel pile
US20100212922A1 (en) * 2002-09-17 2010-08-26 American Piledriving Equipment Inc. Preloaded drop hammer for driving piles
US8496072B2 (en) 2002-09-17 2013-07-30 American Piledriving Equipment, Inc. Preloaded drop hammer for driving piles
US8181713B2 (en) * 2002-09-17 2012-05-22 American Piledriving Equipment, Inc. Preloaded drop hammer for driving piles
US7694747B1 (en) * 2002-09-17 2010-04-13 American Piledriving Equipment, Inc. Preloaded drop hammer for driving piles
RU2257563C2 (ru) * 2003-02-19 2005-07-27 Федеральное государственное унитарное научно-производственное предприятие "Геологоразведка" Способ определения состояния свай и устройство для его реализации
US20100018733A1 (en) * 2007-03-09 2010-01-28 Jasper Stefan Winkes Pile-driving method and device
US20100059241A1 (en) * 2007-03-09 2010-03-11 Jasper Stefan Winkes Pile-driving device
US8230940B2 (en) 2007-03-09 2012-07-31 Technische Universiteit Eindhoven Method for driving a support into a ground surface by means of a pile-driving device, and a pile-driving device for use with such a method
RU2364852C1 (ru) * 2008-01-09 2009-08-20 Учреждение Ханты-Мансийского автономного округа-Югры Россия "Югорский научно-исследовательский институт информационных технологий" Способ определения упругих характеристик сваи и вмещающего грунта
US9255375B2 (en) 2009-05-27 2016-02-09 American Piledriving Equipment, Inc. Helmet adapter for pile drivers
US20110162859A1 (en) * 2010-01-06 2011-07-07 White John L Pile driving systems and methods employing preloaded drop hammer
US8763719B2 (en) 2010-01-06 2014-07-01 American Piledriving Equipment, Inc. Pile driving systems and methods employing preloaded drop hammer
US8434969B2 (en) 2010-04-02 2013-05-07 American Piledriving Equipment, Inc. Internal pipe clamp
CN102900084A (zh) * 2011-05-20 2013-01-30 美国打桩设备公司 用于控制柴油锤的系统和方法
US20150129271A1 (en) * 2013-11-12 2015-05-14 Delmag Gmbh & Co. Kg Diesel hammer pile driver
US9759124B2 (en) 2013-11-12 2017-09-12 Delmag Gmbh & Co. Kg Pile hammer
US10273646B2 (en) 2015-12-14 2019-04-30 American Piledriving Equipment, Inc. Guide systems and methods for diesel hammers
US10538892B2 (en) 2016-06-30 2020-01-21 American Piledriving Equipment, Inc. Hydraulic impact hammer systems and methods
US12129623B2 (en) 2021-03-31 2024-10-29 American Piledriving Equipment, Inc. Segmented ram systems and methods for hydraulic impact hammers

Also Published As

Publication number Publication date
DE2202304A1 (de) 1972-08-03
JPS5340883Y2 (cg-RX-API-DMAC10.html) 1978-10-03
NL145305B (nl) 1975-03-17
GB1319213A (en) 1973-06-06
JPS471904U (cg-RX-API-DMAC10.html) 1972-08-22
NL7200835A (cg-RX-API-DMAC10.html) 1972-07-25
DE2202304B2 (de) 1974-06-12

Similar Documents

Publication Publication Date Title
US3789930A (en) Method for reducing noise of a diesel pile hammer
US5540193A (en) Method for the cold start of a free-piston engine; and free-piston engine adapted for use of this method
EP2019192B1 (en) Free-piston internal combustion engine
US6213097B1 (en) Engine working according to the method of pulsating combustion
EP0769099A1 (en) Method of piston internal combustion engine working and piston internal combustion engine
US4344405A (en) Internal combustion engine
US5611300A (en) Floating piston, piston-valve engine
US2678032A (en) Free piston engine
WO1993010343A1 (en) Method of operating a free-piston engine; and free-piston engine operating according to this method
US3130716A (en) Internal combustion engine
US2792816A (en) Rams for pile-drivers and the like
JP2022519017A (ja) 燃焼機関における可変圧縮比を提供する方法及び該方法のための装置
CN218760125U (zh) 一种新型二冲程内燃机
US5156685A (en) Combustion promoter for internal combustion engines
JP4223987B2 (ja) 爆発行程が圧縮行程より長い直噴４サイクルエンジン
JPH10205333A (ja) エンジンにおける燃焼室の構造
JPH10122000A (ja) 可変圧縮比副室式ガスエンジン
KR200175700Y1 (ko) 엔진 연소실의 와류 형성 구조
JPH08232675A (ja) 無カム式行程分離エンジン
KR20240003544A (ko) 컨넥팅 로드없이 직선운동을 회전운동으로 변환하는 차량용 내연기관
JPH0337332A (ja) 断熱エンジン
US6955143B2 (en) Internal combustion engine
IE35522B1 (en) Free piston engine
JPH07279683A (ja) クランクレスエンジン
SU1004534A2 (ru) Сваебойный дизельный молот