JPS6221092B2 - - Google Patents
Info
- Publication number
- JPS6221092B2 JPS6221092B2 JP6334580A JP6334580A JPS6221092B2 JP S6221092 B2 JPS6221092 B2 JP S6221092B2 JP 6334580 A JP6334580 A JP 6334580A JP 6334580 A JP6334580 A JP 6334580A JP S6221092 B2 JPS6221092 B2 JP S6221092B2
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- piston
- cylinder
- small
- diameter cylinder
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 30
- 239000000446 fuel Substances 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
【発明の詳細な説明】
本発明は、岸壁、埋立、河川護岸、山留工事な
どの鋼矢板、鋼管、シートパイル等の圧入、引き
抜きに使用される内燃式起振機の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an internal combustion type exciter used for press-in and extraction of steel sheet piles, steel pipes, sheet piles, etc. for quay walls, land reclamation, river revetment, mountain retaining construction, etc.
従来の内燃式起振機ａは、第１図ないし第２図
に図示されるように、一般的なキヤタピラを具備
して自走しうるクレーン車ｂのクレーンｃの先端
からワイヤｄを介しフツクｅで吊り下げられてい
る。この場合フツクｅと起振機ａとにシヤツクル
ｆおよびコイルばねの如き緩衝器ｇが直列に介装
され、起振機ａの下端のチヤツクｈに鋼管ｉが咬
持されている。 As shown in FIGS. 1 and 2, a conventional internal combustion type exciter a is connected to a hook via a wire d from the tip of a crane c of a mobile crane b that is equipped with a general caterpillar and can move on its own. It is suspended by e. In this case, a shaft f and a shock absorber g such as a coil spring are interposed in series between the hook e and the exciter a, and a steel pipe i is held by a chuck h at the lower end of the exciter a.
しかして前記内燃式起振機ａは、シリンダa1
と、同シリンダa1に摺動自在に嵌装されたピスト
ンa2と、シリンダa1の下端に設けられた燃料噴射
ノズルa8と、同ノズルa8に連結された燃料噴射管
a4と、ピストンa2の上下両端外周に嵌装されたピ
ストンリングa6とよりなり、シリンダa1の下部外
周に吸排気孔a6が設けられ、前記シリンダa1内に
おいて、前記ピストンa2より下方で燃焼室a7、前
記ピストンa2より上方で空気緩衝室a6がそれぞれ
形成されている。 Therefore, the internal combustion exciter a has a cylinder a 1
, a piston A 2 slidably fitted into the cylinder A 1 , a fuel injection nozzle A 8 provided at the lower end of the cylinder A 1 , and a fuel injection pipe connected to the nozzle A 8 .
A 4 and a piston ring A 6 fitted on the outer periphery of both upper and lower ends of the piston A 2 , an intake/exhaust hole A 6 is provided on the outer periphery of the lower part of the cylinder A 1 , and within the cylinder A 1 , the piston A 2 A combustion chamber a 7 is formed below the piston a 2 , and an air buffer chamber a 6 is formed above the piston a 2 .
第１図ないし第２図に図示の従来の内燃式起振
機ａでは、圧搾空気等で上方に押し上げられたピ
ストンa2は自重と空気緩衝室a6の圧力とによつて
上方から下方へ落下し、吸排気孔a6を塞いでさら
に下降すると、燃焼室a7内の空気は断熱圧縮によ
つて高温高圧になる。 In the conventional internal combustion type exciter a shown in Figs. 1 and 2, the piston a2 pushed upward by compressed air or the like moves downward from above by its own weight and the pressure of the air buffer chamber a6 . When it falls, blocks the intake and exhaust hole A6 , and descends further, the air in the combustion chamber A7 becomes high temperature and high pressure due to adiabatic compression.
この高温高圧になつた時期に、図示されない燃
料噴射ポンプより燃料噴射管a4を介しノズルa8か
ら燃料を燃焼室a7に噴射すると、着火燃焼し、こ
の燃焼によつて燃料室a7の圧力が上昇し、ピスト
ンa2は上方へ運動を転向する。 At this time of high temperature and high pressure, when fuel is injected from the nozzle a8 through the fuel injection pipe a4 from a fuel injection pump (not shown) into the combustion chamber a7 , it ignites and burns . The pressure increases and piston a2 diverts its motion upwards.
このように内燃式起振機ａは、前記シリンダa1
内をピストンa2が燃料の爆発力によつて上下運動
を繰り返し、起振機ａに振動を与え、これに固着
されたチヤツクｈに咬持された鋼管ｉまたは図示
されない矢板等に振動を与えて軟弱地盤等に鋼管
ｉ等を打ち込みあるいは引き抜き、もしくは後記
するように鋼管ｉの内部中空部に砂等の地盤改良
材を送り込み、地盤を硬めるようになつていた。 In this way, the internal combustion exciter a has the cylinder a 1
Inside, piston A 2 repeats vertical movement due to the explosive force of the fuel, giving vibration to exciter A, which in turn gives vibration to steel pipe I held by chuck h fixed to it, or sheet piles (not shown), etc. In order to harden the ground, a steel pipe i or the like is driven into or pulled out of the soft ground, or, as will be described later, a soil improvement material such as sand is fed into the hollow part of the steel pipe i.
地盤改良には、第３図に図示するように、鋼管
ｉの下端は開放されているものの上端は密閉さ
れ、コンプレツサｊよりホースｋを介して鋼管ｉ
の上部側面の空気注入孔ｌに接続され、同空気注
入孔ｌより下方鋼管ｉの側面に砂等の地盤改良材
供給用の孔ｍが設けられており、起振機ａの振動
または自重によつて鋼管ｉは軟弱地盤ｐに打ち込
まれ、次にコンプレツサｊで圧縮されてホースｋ
を介して空気注入孔ｌより鋼管ｉ内に注入された
圧縮空気により、鋼管ｉの中空部にはいり込んだ
泥土は鋼管下端排出孔ｎを通して外へ排出され、
その後、中空になつた鋼管ｉ内に供給孔ｍより地
盤改良材が供給され、起振機ａの上下振動により
地盤改良材が硬められ、軟弱地盤ｐに硬い柱が形
成され、地盤ｐが改良される。 For ground improvement, as shown in Figure 3, the lower end of the steel pipe i is open but the upper end is sealed, and the steel pipe i is connected from the compressor j through the hose k.
A hole m for supplying ground improvement material such as sand is connected to the air injection hole l on the upper side of the exciter a, and a hole m for supplying ground improvement material such as sand is provided on the side of the steel pipe i below the air injection hole l. Therefore, steel pipe i is driven into soft ground p, and then compressed by compressor j and hose k
By the compressed air injected into the steel pipe i from the air injection hole l through the pipe, the mud that has entered the hollow part of the steel pipe i is discharged to the outside through the steel pipe lower end discharge hole n.
After that, the ground improvement material is supplied from the supply hole m into the hollow steel pipe i, and the ground improvement material is hardened by the vertical vibration of the exciter a, and a hard column is formed in the soft ground p, and the ground p is improved. be done.
このように硬い柱を能率良く形成するには、適
当な振巾とできるだけ早い振動が必要である。 In order to efficiently form such a hard column, it is necessary to have an appropriate vibration width and vibration as fast as possible.
そして振動を早めるには、燃焼室a7の爆発圧力
を高めるか、あるいはピストンa2のストロークを
短かくすればよいが、爆発圧力を高めることは、
起振機ａの強度上限界があり、従つてピストンa2
のストロークの短縮以外には他に方法がない。 To speed up the vibration, you can either increase the explosion pressure in the combustion chamber A7 or shorten the stroke of the piston A2 , but increasing the explosion pressure
There is an upper limit on the strength of the exciter a, so the piston a 2
There is no other way other than shortening the stroke.
しかしながら、ピストンa2のストロークを短か
くして同じ出力を得るには、シリンダa1の径を大
きくしなければならないが、その結果、燃焼室a7
の形状は扁平になり、良好な燃焼が得られなかつ
た。 However, in order to shorten the stroke of piston a 2 and obtain the same power, the diameter of cylinder a 1 must be increased, but as a result the combustion chamber a 7
The shape became flat and good combustion could not be obtained.
本発明はこのような難点を克服した内燃式起振
機の改良に係り、大径のシリンダと小径のシリン
ダとのスカート部を互いに向き合せ、前記２個の
シリンダにそれぞれ嵌合摺動できるように２つの
ピストンを一体に形成し、前記小径のシリンダ頭
部側を燃焼室に、前記大径のシリンダ頭部側を空
気緩衝室にそれぞれ形成したことを特徴とするも
ので、その目的とする処は、出力を落さずに振動
数の高い内燃式起振機を供する点にある。 The present invention relates to an improvement of an internal combustion type vibration exciter that overcomes such difficulties, and the skirt portions of the large-diameter cylinder and the small-diameter cylinder are made to face each other so that they can fit and slide into the two cylinders respectively. The piston is characterized in that two pistons are integrally formed, the head side of the small diameter cylinder is formed as a combustion chamber, and the head side of the large diameter cylinder is formed as an air buffer chamber. The key point is to provide an internal combustion type exciter with high vibration frequency without reducing output.
本発明は、前記したように大径シリンダのスカ
ート部に対し比較的に小径に形成されている小径
シリンダのスカート部を向き合せて延長状に配設
するとともに、前記大径シリンダに嵌合して摺動
する大径ピストンに対し前記小径シリンダに嵌合
して摺動する小径ピストンを一体に形成して、前
記大径シリンダのシリンダ頭部側に形成された大
径の空気緩衝室に対し前記小径シリンダのシリン
ダ頭部側に小径の燃焼室を形成したため、前記燃
焼室を細長く形成して良好な燃焼を行なわせると
ともに、大径の空気緩衝室により燃料燃焼エネル
ギの大部分を短いストロークで空気圧縮エネルギ
に変換させて、ピストンストロークを短縮させる
ことができ、出力を落さずに短時間内に能率良く
所要の作業を遂行させることができる。 As described above, the skirt portion of the small diameter cylinder, which is formed to have a relatively small diameter, is disposed in an extended shape facing the skirt portion of the large diameter cylinder, and the skirt portion is fitted into the large diameter cylinder. A small-diameter piston that fits and slides in the small-diameter cylinder is integrally formed with a large-diameter piston that slides on the large-diameter piston, and a large-diameter air buffer chamber formed on the cylinder head side of the large-diameter cylinder Since a small-diameter combustion chamber is formed on the cylinder head side of the small-diameter cylinder, the combustion chamber is elongated to achieve good combustion, and the large-diameter air buffer chamber allows most of the fuel combustion energy to be absorbed in a short stroke. By converting it into air compression energy, the piston stroke can be shortened, and the required work can be efficiently performed within a short time without reducing output.
以下本発明を第４図に図示の実施例について説
明すると、１は大径の空気緩衝室側のシリンダ
で、同大径シリンダ１のスカート部に対して小径
のシリンダ２のスカート部が向き合わせて延長状
に配設され、大径シリンダ１に対して小径シリン
ダ２が同一軸線上に配設され、両シリンダ１，２
のスカート部は、図示されない力骨によつて強固
に固着されている。 The present invention will be described below with reference to the embodiment shown in FIG. 4. Reference numeral 1 denotes a large-diameter cylinder on the air buffer chamber side, and the skirt portion of the small-diameter cylinder 2 faces the skirt portion of the large-diameter cylinder 1. The small diameter cylinder 2 is arranged on the same axis as the large diameter cylinder 1, and both cylinders 1 and 2 are arranged in an extended manner.
The skirt portion is firmly fixed by a stiffener (not shown).
また前記大径シリンダ１および小径シリンダ２
にそれぞれ嵌合して摺動する大径ピストン３およ
び小径ピストン４が一体に形成され、両ピストン
３，４の外周にピストンリング５，６が嵌装され
ており、大径シリンダ１と大径ピストン３とで空
気緩衝室７が、小径シリンダ２と小径ピストン４
とで燃焼室８が形成されている。 In addition, the large diameter cylinder 1 and the small diameter cylinder 2
A large-diameter piston 3 and a small-diameter piston 4 are integrally formed, and piston rings 5 and 6 are fitted around the outer peripheries of both pistons 3 and 4. An air buffer chamber 7 is formed between the piston 3 and the small diameter cylinder 2 and the small diameter piston 4.
A combustion chamber 8 is formed.
さらに燃焼室８には燃料噴射ノズル９が設けら
れ、同ノズル９は燃料噴射管１０を介して図示さ
れない燃料噴射ポンプに接続されており、同ポン
プより供給された燃料は燃料噴射ノズル９より燃
焼室８内に噴射されるようになつている。 Further, the combustion chamber 8 is provided with a fuel injection nozzle 9, which is connected to a fuel injection pump (not shown) via a fuel injection pipe 10, and the fuel supplied from the pump is combusted through the fuel injection nozzle 9. It is designed to be injected into the chamber 8.
さらにまた前記小径シリンダ２には吸排気孔１
１が設けられ、前記大径シリンダ１のスカート部
は空隙部１２を介して外気と連通されている。 Furthermore, the small diameter cylinder 2 has intake and exhaust holes 1.
1 is provided, and the skirt portion of the large diameter cylinder 1 is communicated with the outside air via a cavity 12.
第４図に図示の実施例は前記したように構成さ
れているので、緩衝室７の直径は燃焼室８の直径
より大きく設定されており、燃焼室８内での燃料
の燃焼により生じたエネルギは、次にピストン
３，４の位置のエネルギと緩衝室７の空気圧縮エ
ネルギに変換される。 Since the embodiment shown in FIG. 4 is configured as described above, the diameter of the buffer chamber 7 is set larger than the diameter of the combustion chamber 8, and the energy generated by combustion of fuel within the combustion chamber 8 is is then converted into the positional energy of the pistons 3 and 4 and the air compression energy of the buffer chamber 7.
この緩衝室７の空気圧縮エネルギは、緩衝室７
の圧力をＰ、その容積をＶ、大ピストン３の断面
積をＡ、ピストン３，４のストロークをＳとする
と、
∫PdV＝Ａ∫PdS
で表わされるが、緩衝室７の空気圧縮エネルギＡ
∫PdSを一定とすれば、大ピストン３の断面積Ａ
を大きくすれば、ピストン３，４のストロークは
小さくなることが分る。 The air compression energy in the buffer chamber 7 is
If the pressure is P, its volume is V, the cross-sectional area of the large piston 3 is A, and the stroke of the pistons 3 and 4 is S, it is expressed as ∫PdV=A∫PdS, but the air compression energy A in the buffer chamber 7
∫If PdS is constant, the cross-sectional area A of the large piston 3
It can be seen that the strokes of the pistons 3 and 4 become smaller as .
従つて前記実施例では、燃焼室８の径を大きく
しないで、緩衝室７の径を大きくすることができ
るため、良好な燃焼を維持したままピストン３，
４のストロークを大巾に短縮でき、この結果、起
振機の振動数を高めて、第３図に図示の如き地盤
改良を短時間内に能率良く遂行することができ
る。 Therefore, in the embodiment described above, the diameter of the buffer chamber 7 can be increased without increasing the diameter of the combustion chamber 8, so that the piston 3, while maintaining good combustion.
4 can be greatly shortened, and as a result, the vibration frequency of the exciter can be increased, and ground improvement as shown in FIG. 3 can be carried out efficiently in a short period of time.
以上本発明を実施例について説明したが、勿論
本発明はこのような実施例にだけ局限されるもの
ではなく、本発明の精神を逸脱しない範囲内で
種々の設計の改変を施しうるものである。 Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .
第１図は従来の内燃式起振機の概略を図示した
側面図、第２図はその拡大縦断側面図、第３図は
前記起振機を用いて地盤改良を行なう状態を図示
した側面図、第４図は本発明に係る内燃式起振機
の一実施例を図示した縦断側面図である。
１……大径シリンダ、２……小径シリンダ、３
……大径ピストン、４……小径ピストン、５，６
……ピストンリング、７……空気緩衝室、８……
燃焼室、９……燃料噴射ノズル、１０……燃料噴
射管、１１……吸排気孔、１２……空隙部。
Fig. 1 is a side view schematically illustrating a conventional internal combustion type exciter, Fig. 2 is an enlarged longitudinal sectional side view thereof, and Fig. 3 is a side view illustrating the state in which ground improvement is performed using the above-described exciter. , FIG. 4 is a longitudinal sectional side view illustrating an embodiment of the internal combustion type exciter according to the present invention. 1...Large diameter cylinder, 2...Small diameter cylinder, 3
...Large diameter piston, 4...Small diameter piston, 5,6
...Piston ring, 7...Air buffer chamber, 8...
Combustion chamber, 9... fuel injection nozzle, 10... fuel injection pipe, 11... intake/exhaust hole, 12... void portion.
Claims (1)
径に形成されている小径シリンダのスカート部を
向き合せて延長状に配設するとともに、前記大径
シリンダに嵌合して摺動する大径ピストンに対し
前記小径シリンダに嵌合して摺動する小径ピスト
ンを一体に形成して、前記大径シリンダのシリン
ダ頭部側に形成された大径の空気緩衝室に対し前
記小径シリンダのシリンダ頭部側に小径の燃焼室
を形成したことを特徴とする内燃式起振機。1. A large-diameter piston that is disposed in an extended manner with the skirt portion of a small-diameter cylinder formed to have a relatively small diameter facing the skirt portion of the large-diameter cylinder, and that fits and slides on the large-diameter cylinder. A small-diameter piston that fits and slides on the small-diameter cylinder is integrally formed, and the cylinder head of the small-diameter cylinder is connected to a large-diameter air buffer chamber formed on the cylinder head side of the large-diameter cylinder. An internal combustion exciter characterized by a small-diameter combustion chamber formed on the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6334580A JPS56159424A (en) | 1980-05-15 | 1980-05-15 | Internal combustion type vibration generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6334580A JPS56159424A (en) | 1980-05-15 | 1980-05-15 | Internal combustion type vibration generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56159424A JPS56159424A (en) | 1981-12-08 |
| JPS6221092B2 true JPS6221092B2 (en) | 1987-05-11 |
Family
ID=13226553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6334580A Granted JPS56159424A (en) | 1980-05-15 | 1980-05-15 | Internal combustion type vibration generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56159424A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400775A (en) * | 2016-10-28 | 2017-02-15 | 上海港湾基础建设（集团）有限公司 | Strong plate inserting machine and plate inserting method using strong plate inserting machine |
-
1980
- 1980-05-15 JP JP6334580A patent/JPS56159424A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400775A (en) * | 2016-10-28 | 2017-02-15 | 上海港湾基础建设（集团）有限公司 | Strong plate inserting machine and plate inserting method using strong plate inserting machine |
| CN106400775B (en) * | 2016-10-28 | 2018-10-02 | 上海港湾基础建设（集团）股份有限公司 | A kind of strength board-plugging device and the plate plug method using the strength board-plugging device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56159424A (en) | 1981-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0679651A (en) | Striking mechanism using air and liquid pressure | |
| CN100406651C (en) | Hydraulic pile-ramming hammer | |
| JPS6221092B2 (en) | ||
| SE8005481L (en) | SET AND DEVICE FOR PALAR RECOVERY | |
| SU607885A1 (en) | Pneumatic percussive device | |
| SU858997A1 (en) | High-speed hammer | |
| US2792816A (en) | Rams for pile-drivers and the like | |
| JPS5825134B2 (en) | vibrating pile driver | |
| CN212052750U (en) | Combined hammer core of diesel hammer pile driver | |
| US3013541A (en) | Pile driving hammer | |
| SU632801A1 (en) | Pile-driving kick atomization hammer | |
| SU477217A1 (en) | Diesel Diesel Hammer | |
| SU1723270A1 (en) | Diesel-driven earth puncher for making holes in soil | |
| SU381757A1 (en) | DEVICE FOR THERMOMECHIIC DRILLING | |
| CN211395672U (en) | Pile driver grout rotary joint | |
| SU977754A1 (en) | Impact mechanism | |
| SU1004534A2 (en) | Pile-driving diesel hammer | |
| SU1021716A1 (en) | Tubular diesel engine hammer | |
| SU623922A1 (en) | Diesel-powered hammer pile driver | |
| US2203384A (en) | Percussion or repercussion apparatus | |
| CN1033532A (en) | With the liquid gun propellant is the pile driver of power | |
| SU682601A1 (en) | Pile driving diesel hammer | |
| SU379749A1 (en) | ||
| RU38814U1 (en) | BREAKER | |
| SU1104268A1 (en) | Arrangement for breaking oversize |