JPS59165728A - Pile driver - Google Patents

Pile driver

Info

Publication number
JPS59165728A
JPS59165728A JP4010783A JP4010783A JPS59165728A JP S59165728 A JPS59165728 A JP S59165728A JP 4010783 A JP4010783 A JP 4010783A JP 4010783 A JP4010783 A JP 4010783A JP S59165728 A JPS59165728 A JP S59165728A
Authority
JP
Japan
Prior art keywords
piston
cap
pile
steel pipe
pipe pile
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.)
Pending
Application number
JP4010783A
Other languages
Japanese (ja)
Inventor
Mamoru Yamada
守 山田
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.)
Sekisui House Ltd
Original Assignee
Sekisui House 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 Sekisui House Ltd filed Critical Sekisui House Ltd
Priority to JP4010783A priority Critical patent/JPS59165728A/en
Publication of JPS59165728A publication Critical patent/JPS59165728A/en
Pending legal-status Critical Current

Links

Landscapes

  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

PURPOSE:To reduce noise during the pile driving period by a method in which the striking portion on the tip of a piston is inserted into a recession formed in the cap, and the bottom of the recession is struck by the striking portion. CONSTITUTION:When compressed air is sent into an inlet 8, the air coming into the lower operating chamber 13 enters the upper operating chamber 15 through paths 16 and 17 to lower a piston 9, the bottom 5a of the recession 5 of a cap 2 is struck by the striking portion 19, and a steel tubular pile 1 is driven. The striking point is positioned in the inside of the cap 2, and noise is reduced because the cap 2 plays a role of sound-proof cover.

Description

【発明の詳細な説明】 本発明は、主として住宅の地盤を補強するために使用さ
れる杭打ち装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pile driving device mainly used for reinforcing the ground of a house.

住宅の地盤を改良する杭打ち工法として、鋼管杭の上端
にシリンダとピストンを備えた杭打ち装置を取付け、シ
リンダ内に圧縮空気を送り込んでピストンを往復させ、
これによって杭を打ち込む装置は公知である(特開昭5
5−26340号公報参照)。このような杭打ち装置は
、モンケンやディーゼルハンマーを用いる方法に比較し
て、大掛りな装置を必要とせず、住宅地等の狭い現場で
の工事に適しているが、その反面このような工事は市街
地で行なう場合が多く、しばしば騒音が問題となると6
)う欠点を有している。本発明は、かかる杭打ち装置に
おける騒音を低減することを目的としてなされたもので
、その構成として本発明は、杭上端に取付けられ、かつ
、シリンダとピストンを備えた空又は液圧作動の打撃装
置と、同じく杭上端へ取付けられ、かつ、その上面に前
記ピストン先端の打撃部が挿入される凹部を備えたキャ
ンプとからなること特徴とするものである。
As a pile driving method for improving the ground of houses, a pile driving device equipped with a cylinder and a piston is attached to the top end of a steel pipe pile, and compressed air is sent into the cylinder to cause the piston to reciprocate.
A device for driving piles using this method is well known (Japanese Patent Application Laid-open No. 5
5-26340). Compared to methods using Monken or diesel hammers, this kind of pile driving device does not require large-scale equipment and is suitable for construction work in narrow sites such as residential areas. is often carried out in urban areas, and noise is often a problem.
) has some drawbacks. The present invention has been made for the purpose of reducing noise in such a pile driving device, and as a structure thereof, the present invention is a pneumatic or hydraulically operated driving device that is attached to the upper end of a pile and is equipped with a cylinder and a piston. The apparatus is characterized by comprising a device and a camp which is also attached to the upper end of the pile and has a recessed part in the upper surface thereof into which the striking part of the tip of the piston is inserted.

以下本発明の装置を図示の一実施例に基づいて説明する
と、図において、(1)は、地中へ打ち込まれる鋼管杭
であって、この鋼管杭fl)の上端には、鋼製のキャン
プ(2)が挿入して取付けられている。
The apparatus of the present invention will be explained below based on an illustrated embodiment. In the figure, (1) is a steel pipe pile that is driven into the ground, and a steel camp is installed at the upper end of this steel pipe pile (fl). (2) is inserted and installed.

このキャップ(2)は、鋼管杭(1)上端へ挿入される
挿入部(3)と、該挿入部(3)の上端に一体形成され
、かつ、鋼管杭(1)上端へ当接するフランジ部(4)
とからなるものであって、その上面より垂直下方に向け
て円形凹部(5)が形成されている。また、この円形凹
部(5)は、その底面(5a)から挿入部(3)の底部
側へ貫通して、エア抜き穴(6)が穿設されている。
This cap (2) includes an insertion part (3) that is inserted into the upper end of the steel pipe pile (1), and a flange part that is integrally formed with the upper end of the insertion part (3) and comes into contact with the upper end of the steel pipe pile (1). (4)
A circular recess (5) is formed vertically downward from the upper surface. Further, this circular recess (5) has an air vent hole (6) penetrating through it from its bottom surface (5a) to the bottom side of the insertion portion (3).

他方、(7)は、下端を開放した筒状シリンダ(8)と
このシリンダ(8)内へ挿入されるピストン(9)とか
らなる打撃装置であって、ピストン(9)は、その本体
(lO)上端外周に大径部(11)が形成されて、この
大径部(11)の外周面がシリンダ(8)内壁面に摺接
している。また、シリンダ(8)内壁面には、上記ピス
トン大径部(11)の下方において、環状突出部(12
)が形成され、この環状突出部(12)内面にピストン
(9)の本体(10)が摺接するとともに、これらピス
トン大径部(11)と環状突出部(12)間に形成され
る空間部が下部作動室(13)とされ、他方、ピストン
(9)上面とシリンダ(8)天井面(14)との間の空
間部が上部作動室(15)とされている。
On the other hand, (7) is a striking device consisting of a cylindrical cylinder (8) with an open lower end and a piston (9) inserted into this cylinder (8), and the piston (9) has a main body ( lO) A large diameter portion (11) is formed on the outer periphery of the upper end, and the outer circumferential surface of the large diameter portion (11) is in sliding contact with the inner wall surface of the cylinder (8). Further, an annular protrusion (12) is provided on the inner wall surface of the cylinder (8) below the piston large diameter portion (11).
) is formed, and the main body (10) of the piston (9) comes into sliding contact with the inner surface of this annular protrusion (12), and a space is formed between the piston large diameter part (11) and the annular protrusion (12). is defined as a lower working chamber (13), and on the other hand, a space between the top surface of the piston (9) and the ceiling surface (14) of the cylinder (8) is defined as an upper working chamber (15).

更に、ピストン(9)には、その本体(10)を直径方
向に貫通する横方向通路(16)と、この横方向通路(
16)の途中から上部作動室(15)側に貫通する縦方
向通路(17)とが形成されている。シリンダ(8)の
周壁部には、前記下部作動室(13)に連通して入口(
18)が形成されている。また、ピストン(9)には、
その本体く10)底部より下方へ突出して小径の打撃部
(19)が一体に形成されており、この、打撃部(19
)下端が前記キャップ(2)に形成した凹部(5)へ挿
入されて、ピストン(9)が下降すると、打撃部(19
)の先端が凹部(5)の底面(5a)を打撃するように
なっている。その際、凹部(5)入口は、ピストン打撃
部(19)が入り易いよう、その角部(5b)がR形状
に形成されている。更に、シリンダイ8)より下方へ延
長されたスカート部(20)は、これらキャップ(2)
及び鋼管杭(1)上端を覆うようにして、鋼管杭(1)
上端部外側へ被せられている。
Furthermore, the piston (9) has a transverse passage (16) extending diametrically through its body (10) and a transverse passage (16) extending diametrically through its body (10).
A vertical passageway (17) is formed that penetrates from the middle of 16) toward the upper working chamber (15). The peripheral wall of the cylinder (8) has an inlet (
18) is formed. In addition, the piston (9) has
The main body (10) is integrally formed with a small-diameter striking part (19) that protrudes downward from the bottom.
) When the lower end is inserted into the recess (5) formed in the cap (2) and the piston (9) descends, the striking part (19
) is adapted to strike the bottom surface (5a) of the recess (5). At this time, the corner (5b) of the entrance of the recess (5) is formed into a rounded shape so that the piston striking part (19) can easily enter therein. Furthermore, the skirt portion (20) extending downward from the cylinder die 8) is connected to these caps (2).
and the steel pipe pile (1) so as to cover the upper end of the steel pipe pile (1).
It is placed on the outside of the upper end.

さて、図において第1図は、ピストン(9)が上昇した
状態、第2図は、同じく下降した状態を示しており、上
記第1図においては、横方向通路(16)と縦方向通路
(17)とによって、下部作動室(13)と上部作動室
(15)とが連通しており、それ故、この段階で入口(
18)から圧縮空気を送り込むと、下部作動室(13)
に入った空気は、これら各通路(16)  (17)を
通って上部作動室(15)に入るから、ピストン(9)
が下降し、キャンプ(2)の凹部(5)に挿入された打
撃部(19)が、該凹部(5)の底面(5a)を打撃し
、鋼管杭(1)が打ち込まれる。このようにしてピスト
ン(9)が下降し、鋼管杭(1)を打撃した状態では、
第2図の如く、ピストン本体(10)の横方向通路(1
6)がシリンダ(8)の環状突出部(12)より下側に
位置し、それ故、下部作動室(13)と上部作動室(1
5)の連通が閉しられており、従って、入口(18)よ
り送り込まれた圧縮空気は、下部作動室(13)にのみ
供給されて、ピストン(9)を上昇させ、このような往
復動作を繰り返しつつ、鋼管杭(1)を地中へ打ち込む
ものである。
Now, in the drawings, Fig. 1 shows a state in which the piston (9) is raised, and Fig. 2 shows a state in which the piston (9) is similarly descended. 17), the lower working chamber (13) and upper working chamber (15) communicate with each other, and therefore, at this stage, the inlet (
When compressed air is sent from the lower working chamber (13)
The air enters the upper working chamber (15) through these passages (16) and (17), so that the piston (9)
is lowered, and the striking part (19) inserted into the recess (5) of the camp (2) hits the bottom surface (5a) of the recess (5), and the steel pipe pile (1) is driven. In this way, when the piston (9) descends and hits the steel pipe pile (1),
As shown in Fig. 2, the lateral passage (1) of the piston body (10)
6) is located below the annular protrusion (12) of the cylinder (8), therefore, the lower working chamber (13) and the upper working chamber (1
5) is closed, and therefore the compressed air sent from the inlet (18) is supplied only to the lower working chamber (13) to raise the piston (9) and perform such reciprocating motion. The steel pipe pile (1) is driven into the ground while repeating the above steps.

上記において、エア抜き穴(6)の径は、大きすぎると
凹部(5)底部の強度が不足し、他方、小さすぎるとピ
ストン(9)上昇時にキャップ(2)が持ち上がる虞れ
があり、発明者の実験では、凹部(5)内径60mmの
場合で、10.5mmとした場合が最も良好であった。
In the above, if the diameter of the air bleed hole (6) is too large, the strength of the bottom of the recess (5) will be insufficient, and on the other hand, if it is too small, there is a risk that the cap (2) will be lifted when the piston (9) rises. In the experiment conducted by the author, when the inner diameter of the recess (5) was 60 mm, the best result was when the inner diameter was 10.5 mm.

また、その際のピストン(9)のストロークは約15m
m、鋼管杭(1)内径は100mmであった。
In addition, the stroke of the piston (9) at that time is approximately 15 m.
m, and the inner diameter of the steel pipe pile (1) was 100 mm.

なお、上記実施例では圧縮空気によって、作動させるよ
う説明しているが、油圧等の液体によって作動させるよ
うにしても同様である。
In the above embodiments, it is explained that the actuator is actuated by compressed air, but the same effect can be obtained if the actuator is actuated by a liquid such as hydraulic pressure.

このように本発明では、ピストンの打撃部をキャップに
形成した凹部へ挿入し、該打撃部がこの凹部の底面を打
撃するようにしているから、従来のキャップ上面を直接
打撃するものと異なって、打撃地点がキャップの内側に
位置し、このキャップが防音カバーとしての役目をなす
ため、騒音が低減されるという効果がある。第1表は、
キャップの上面を直接打撃する従来装置と凹部の底面を
打撃する本発明装置とを比較して行なったときの騒音測
定結果を示したものであって、この表で解るように、従
来装置に比較して約8dB1%音レベルが低下している
ことがわかる。また、このようにして行なった実験結果
では、従来装置では、打撃によって鋼管杭の上端が押し
つぶされて拡がり、別の鋼管杭を打ち継ぐ際の溶接が困
難になるという欠点があったが、本発明装置では、かか
る鋼管杭先端の拡がりが殆どなく溶接が容易になるとい
う結果が得られた。
In this way, in the present invention, the striking part of the piston is inserted into the recess formed in the cap, and the striking part hits the bottom surface of the recess, which is different from the conventional method in which the upper surface of the cap is directly hit. , the impact point is located inside the cap, and this cap serves as a soundproof cover, which has the effect of reducing noise. Table 1 is
This table shows the noise measurement results when comparing the conventional device that hits the top surface of the cap directly with the device of the present invention that hits the bottom surface of the recess.As can be seen from this table, the comparison with the conventional device It can be seen that the sound level has decreased by about 8 dB1%. In addition, the results of the experiments conducted in this way showed that with conventional equipment, the upper end of the steel pipe pile was crushed and expanded by the impact, making it difficult to weld when driving another steel pipe pile. With the device of the invention, the tip of the steel pipe pile hardly spreads, and welding becomes easy.

表ITable I

【図面の簡単な説明】[Brief explanation of drawings]

第1図及び第2図は、それぞれ本発明装置の使用状態を
示す鋼管杭上端部分の縦断面図である。 (1)−・鋼管杭、(2)・・−キャンプ、(5) −
凹部、(5a) −底面、(7)−杭打ち装置、(8)
−シリンダ、(91−−−ピストン、(19) −打撃
部。 特許 出願人 積木ハウス 株式会社 代理人弁理士 樽  本  久  幸
FIG. 1 and FIG. 2 are longitudinal sectional views of the upper end portion of a steel pipe pile, respectively, showing how the device of the present invention is used. (1) - Steel pipe pile, (2) - Camp, (5) -
Recess, (5a) - Bottom, (7) - Piling device, (8)
-Cylinder, (91---Piston, (19) -Strike part. Patent Applicant: Block House Co., Ltd. Representative Patent Attorney Hisashi Tarumoto

Claims (1)

【特許請求の範囲】[Claims] 杭上端に取付けられ、かつ、シリンダとピストンを備え
た空文は液圧作動の打撃装置と、同じく杭上端へ取付け
られ、かつ、その上面に前記ピストン先端の打撃部が挿
入される凹部を備えたキャンプとからなることを特徴と
する杭打ち装置。
The hollow structure, which is attached to the upper end of the pile and is equipped with a cylinder and a piston, is equipped with a hydraulically operated striking device and a recessed part which is also attached to the upper end of the pile and into which the striking part at the tip of the piston is inserted. A pile driving device comprising:
JP4010783A 1983-03-10 1983-03-10 Pile driver Pending JPS59165728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4010783A JPS59165728A (en) 1983-03-10 1983-03-10 Pile driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4010783A JPS59165728A (en) 1983-03-10 1983-03-10 Pile driver

Publications (1)

Publication Number Publication Date
JPS59165728A true JPS59165728A (en) 1984-09-19

Family

ID=12571630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4010783A Pending JPS59165728A (en) 1983-03-10 1983-03-10 Pile driver

Country Status (1)

Country Link
JP (1) JPS59165728A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019199776A (en) * 2018-05-18 2019-11-21 大智株式会社 Installation device, installation machine, and installation method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019199776A (en) * 2018-05-18 2019-11-21 大智株式会社 Installation device, installation machine, and installation method

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