JPH0681569A - Vibration absorbing device - Google Patents
Vibration absorbing deviceInfo
- Publication number
- JPH0681569A JPH0681569A JP25405892A JP25405892A JPH0681569A JP H0681569 A JPH0681569 A JP H0681569A JP 25405892 A JP25405892 A JP 25405892A JP 25405892 A JP25405892 A JP 25405892A JP H0681569 A JPH0681569 A JP H0681569A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- joint
- male joint
- elastic body
- male
- 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.)
- Granted
Links
Landscapes
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、既製杭を埋込むための
杭穴を掘る空圧打撃式掘削ドリルから伝わる振動を吸収
する杭穴掘削用の振動吸収装置に関する。地盤へ既製杭
を低騒音，低振動で設置する埋込み杭工法等の基礎杭用
工事の分野に利用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration absorbing device for excavating a pile hole, which absorbs vibration transmitted from a pneumatic impact type excavating drill for excavating a pile hole for embedding a ready-made pile. It is used in the field of foundation pile construction such as the buried pile method for installing ready-made piles on the ground with low noise and low vibration.
【０００２】[0002]
【従来の技術】従来、打撃によって直接打込まれた既製
杭は、低騒音，低振動で設置すべく杭の容積に略等しい
穴を掘削した後、これに埋込む工法へと移り変つてきて
いる。この杭の埋込み予定地への先行掘削穴は、圧縮空
気作動による衝撃運動を利用して岩盤等の掘削にも威力
を発揮する空圧打撃式掘削ドリル（特公昭５５−２５２
６５号公報、特公昭５７−３５３５６号公報等）を用い
て得られる。ここでは、掘削ドリル６のボタンビット６
１に対して回転と衝撃を与えながら掘削する方法を採る
（特公昭５８−８００号公報、特公昭６３−５２１９７
号公報等）。このため、ボタンビット６１に回転を与え
るべく、モータ７１及び減速機７２がスクリューロッド
８を介在させて掘削ドリルに連結されている（図３参
照）。2. Description of the Related Art Conventionally, ready-made piles that have been directly driven by striking have moved to a construction method in which a hole having a volume substantially equal to the volume of the pile is excavated in order to be installed with low noise and low vibration, and then embedded therein. There is. The pre-drilling hole to the site where the pile is to be embedded is a pneumatic impact drilling drill (Japanese Patent Publication No. 55-252) that uses impact motion by compressed air operation and is also effective for excavating rocks.
No. 65, Japanese Patent Publication No. 57-35356, etc.). Here, the button bit 6 of the drill 6
The method of excavating while applying rotation and impact to No. 1 (Japanese Patent Publication No. 58-800 and Japanese Patent Publication No. 63-52197).
No. For this reason, the motor 71 and the speed reducer 72 are connected to the excavating drill via the screw rod 8 in order to rotate the button bit 61 (see FIG. 3).
【０００３】[0003]
【発明が解決しようとする課題】しかるに、空圧打撃式
の掘削ドリルでは、掘削穴への先端でボタンビットに打
撃を与えて掘り進むため、打撃と同時に打撃反力を発生
させる。このボタンビットの打撃反力が直かに減速機や
モータへ伝わり、ボタンビットの打撃力で地盤を長時間
掘削していくと、減速機やモータのベアリング，歯車等
を破損させ工事が中断する問題があった。そして、斯る
修理に日数を要するだけでなく修理費負担も大きかっ
た。However, in the pneumatic hammering type drill, since the button bit is hit by the tip of the drilling hole to proceed with the drilling, a hammering reaction force is generated at the same time as the hammering. The impact reaction force of this button bit is directly transmitted to the reducer and the motor, and if the impact force of the button bit excavates the ground for a long time, the bearings and gears of the reducer and motor will be damaged, and the construction will be interrupted. There was a problem. In addition to the number of days required for such repair, the burden of repair costs was large.
【０００４】本発明は上記問題点を解決するもので、雌
継手と雄継手との間に挟着された弾性体が弾性変形する
ようにして、ボタンビットの打撃反力の繰り返し振動を
吸収し、減速機やモータを保護する振動吸収装置を提供
することを目的とする。The present invention solves the above problems by absorbing elastic vibrations of a button bit impact reaction force by elastically deforming an elastic body sandwiched between a female joint and a male joint. An object of the present invention is to provide a vibration absorber that protects a speed reducer and a motor.
【０００５】[0005]
【課題を解決するための手段】本発明に係る振動吸収装
置は、上部に継手を有して角柱穴を穿設したキャップ状
体であって、下端外周壁に出張り縁を設け且つ縦通する
透孔を形成した雌継手（１）と、該角柱穴に嵌挿される
ヘッド部を上部に継手を下部に有し、該ヘッド部より下
方の外側壁に突出した鍔を設け且つ縦通する貫通孔を形
成した雄継手（２）と、角柱穴にヘッド部を嵌挿し該雄
継手を該雌継手に連結するよう鍔の下面に係止して前記
出張り縁に固着させる止具（３）と、中央部に孔を有す
る弾性体（４）とを備え、前記角柱穴に前記弾性体を配
置した後、ヘッド部を嵌挿し、弾性体が圧着されるよう
に鍔に係止した止具を出張り縁へ固着して、前記透孔と
前記貫通孔と前記孔とを気密性を保持しながら連通させ
ると共に前記雄継手に対する上向圧力を更に弾性体が圧
着されるように雄継手が上向き移動し、振動吸収できる
ように構成したことを特徴とする。A vibration absorbing device according to the present invention is a cap-shaped member having a joint at the upper portion and a prismatic hole formed therein. And a female joint (1) having a through hole formed therein, and a head portion which is fitted and inserted into the prismatic hole in the upper portion, and a joint portion in the lower portion, which is provided with a projecting collar on an outer wall below the head portion and extends vertically. A male joint (2) having a through hole formed therein, and a stopper (3) for inserting a head portion into a prismatic hole and locking the male joint to the female joint so as to connect the male joint to the female joint. ) And an elastic body (4) having a hole in the center thereof, and after the elastic body is arranged in the prismatic hole, the head portion is fitted and inserted, and the elastic body is locked to the collar so as to be crimped. The tool is fixed to the projecting edge so that the through hole, the through hole and the hole communicate with each other while maintaining airtightness and the male joint. Male joint so as to further elastic upward pressure is crimped against the upward movement, characterized by being configured to allow vibration absorbing.
【０００６】ここで、「キャップ状体」とは、断面凹形
状で中央に窪みを有しているものをいう。「中央部に孔
を有する弾性体」とは、合成樹脂，合成ゴム等の弾性変
形する材料で作られ、中央に上下へ貫通する孔を有する
盤状体のものをいう。「鍔に係止した止具」とは、鍔に
直かに当接して係止した止具の他、ガスケット等を介在
させて係止した止具も含む。「上部」とは、本発明の振
動吸収装置を取付けて掘削する場合のモータ位置に近い
部分をいい、「下部」とはボタンビットに近い部分をい
う。「上方」とは本発明の振動吸収装置を取付けて掘削
する場合のモータ位置方向をいい、「下方」とはボタン
ビット位置方向をいう。Here, the "cap-shaped body" means a body having a concave cross-section and having a recess at the center. The "elastic body having a hole in the central portion" refers to a disc-shaped body made of an elastically deformable material such as synthetic resin or synthetic rubber and having a vertically penetrating hole in the center. The term "stopper locked to the collar" includes a locker directly contacting the collar and locked, as well as a locker locked with a gasket or the like interposed. The "upper part" means a part closer to the motor position when the vibration absorbing device of the present invention is attached for excavation, and the "lower part" means a part closer to the button bit. "Upper" means the motor position direction when the vibration absorber of the present invention is attached for excavation, and "lower" means the button bit position direction.
【０００７】[0007]
【作用】本発明の振動吸収装置によれば、透孔と孔と貫
通孔とによって振動吸収装置を縦通する圧縮空気の供給
通路を確保しているので、掘削ドリルから減速機へ至る
間のどこにでも配設することができる。そして、雄継手
への上向力に対し雄継手が弾性体を更に圧着させ、雄継
手が浮き上れるようにしているので、ボタンビットの打
撃反力を吸収できる。According to the vibration absorbing device of the present invention, the through hole, the hole, and the through hole secure the supply passage of the compressed air that passes through the vibration absorbing device in the longitudinal direction. It can be placed anywhere. Then, the male joint further presses the elastic body against the upward force to the male joint so that the male joint is lifted, so that the impact reaction force of the button bit can be absorbed.
【０００８】[0008]
【実施例】以下、実施例により本発明を具体的に説明す
る。 （１）実施例１ 図１から図４は、本発明に係る振動吸収装置の一実施例
を示すもので、雌継手１と、雄継手２と、止具３と、弾
性体４と、ねじ部品５とから構成される。EXAMPLES The present invention will be specifically described below with reference to examples. (1) Embodiment 1 FIGS. 1 to 4 show an embodiment of a vibration absorbing device according to the present invention, in which a female joint 1, a male joint 2, a stopper 3, an elastic body 4 and a screw are provided. It is composed of a component 5.
【０００９】雌継手１はキャップ状体１１の上に一体化
した継手１２を有するものである。継手１２は六角柱状
体で、対向側壁にピン溝１２１を切欠いたコッタジョイ
ントになっている。具体的には、相手側のスクリューロ
ッド８に継手１２が嵌合する六角柱穴８１を形成し、継
手１２に対してスクリューロッド８が空回りしない構成
をとる。またスクリューロッド８にピン孔８２を形成
し、ピン溝１２１とピン孔８２を挿通するピン１５，１
５により上下に外れなくなっている。キャップ状体１１
は、下部に六角柱穴１１１の角柱穴を穿設して下面のみ
開口する碗状を構成し、六角柱穴１１１の上部には更に
円盤形の段溝１１２を穿設する。そして、継手１２の上
面中央部から六角柱穴１１１へ軸心上を縦通する透孔１
３を形成している。符号１４はフランジからなる出張り
縁で、キャップ状体１１の下端外周壁に溶接固定したも
のである。尚、キャップ状体１１の外径はスクリューロ
ツド径に略等しくしてある。掘削時の抵抗を小さくする
ためである。The female joint 1 has a joint 12 integrated on a cap-shaped body 11. The joint 12 is a hexagonal columnar body, and is a cotter joint in which a pin groove 121 is cut out on the opposite side wall. Specifically, a hexagonal prismatic hole 81 into which the joint 12 fits is formed in the mating screw rod 8 so that the screw rod 8 does not idle with respect to the joint 12. In addition, a pin hole 82 is formed in the screw rod 8 and the pins 15 and 1 which are inserted through the pin groove 121 and the pin hole 82.
It is not able to come off up and down by 5. Cap-shaped body 11
Forms a bowl shape in which a hexagonal hole 111 is formed in the lower portion to open only the lower surface, and a disc-shaped step groove 112 is further formed in the upper portion of the hexagonal hole 111. Then, the through hole 1 longitudinally passing through the axial center from the center of the upper surface of the joint 12 to the hexagonal column hole 111.
3 is formed. Reference numeral 14 is a projecting edge formed of a flange, which is fixed to the outer peripheral wall of the lower end of the cap-shaped body 11 by welding. The outer diameter of the cap-shaped body 11 is substantially equal to the screw rod diameter. This is to reduce the resistance when excavating.
【００１０】雄継手２は、上部が六角柱のヘッド部２１
をもち、下部が円柱で、円柱下面から六角柱穴２２１を
穿設し、更にこの開穴された六角柱の対向する一対の側
面を切欠くように削孔した穿設孔２２２を設けてコッタ
ジョイントの継手２２としている。ヘッド部２１は、雌
継手１の六角柱穴１１１に嵌挿できる形態をとる。減速
機から雌継手１へ伝った回転運動を空回りさせないため
である。ヘッド部２１の先端は段溝１１２に嵌合する円
盤形の凸状部２１１を設ける。また、ヘッド部２１と六
角柱穴１１１とがセット状態のとき、ヘッド部２１の下
方にボタンヘッドから発生する振動の幅より大きくし
て、なお六角柱穴１１１に入り込める余裕部２３をもた
せている（１５ｍｍ程度）。そして、ヘッド部２１に余
裕部２３を加えた下方外側壁に円板状の鍔２４を突設す
る。The male joint 2 has a head portion 21 having an upper hexagonal prism.
A hexagonal hole 221 is formed in the lower surface of the cylinder, and a pair of side surfaces of the opened hexagonal cylinder are cut out so as to cut out a pair of side surfaces. The joint 22 of the joint is used. The head portion 21 has a form that can be inserted into the hexagonal prismatic hole 111 of the female joint 1. This is because the rotational movement transmitted from the reduction gear to the female joint 1 is prevented from idling. The tip of the head portion 21 is provided with a disk-shaped convex portion 211 that fits into the step groove 112. Further, when the head portion 21 and the hexagonal prismatic hole 111 are in a set state, the width of vibration generated from the button head is set below the head portion 21 so as to have a margin portion 23 that can still enter the hexagonal prismatic hole 111. (About 15 mm). Then, a disc-shaped brim 24 is projectingly provided on the lower outer wall obtained by adding the allowance portion 23 to the head portion 21.
【００１１】継手２２は、雌継手１の継手１２と同形状
のものを嵌合させるようにした雌型構造である。継手２
２の相手である掘削ドリルに取付けたノズル６２は、そ
の先端を六角柱としピン溝６３を形成する。符号２８
は、ピン溝６３と穿設孔２２２を挿通して雄継手２とノ
ズル６２とを固定するピンを示す。ピン２８は爪付きピ
ンで、ピン１５と同形態である。ノズル６２との結合状
態はピン溝６３を通る横断面図で示すと、図４のごとく
である。ノズル６２はピン溝６３でピン２８に係止さ
れ、上下に外れなくなっている。またピン２８は棒鋼部
２８１の一端を円弧状に帯板を曲げた爪部２８２からな
り、爪部２８２は継手２２の外周壁に当接する。爪部２
８２の円弧角度は約１３０度でハンマーでたたいて挿入
する。一度挿着すれば９０度を越える爪部２８２の部分
がストッパの働きをし、掘削ドリル６が連続作動しても
抜けることはない。尚、ピン２８２を外すには、爪部２
８２のない棒鋼部２８１先端を穿設孔２２２を利用して
打ちたたき抜きとる。The joint 22 has a female structure in which the same shape as the joint 12 of the female joint 1 is fitted. Joint 2
The nozzle 62 attached to the excavating drill, which is the counterpart of No. 2, has a pin groove 63 formed with the tip as a hexagonal prism. Reference numeral 28
Shows a pin for fixing the male joint 2 and the nozzle 62 by inserting the pin groove 63 and the hole 222. The pin 28 is a pin with a claw and has the same shape as the pin 15. The state of connection with the nozzle 62 is as shown in FIG. 4 when shown in a cross-sectional view passing through the pin groove 63. The nozzle 62 is locked to the pin 28 by the pin groove 63, and cannot be disengaged vertically. The pin 28 is composed of a claw portion 282 in which one end of the steel bar portion 281 is bent into an arc shape, and the claw portion 282 abuts on the outer peripheral wall of the joint 22. Claw 2
The arc angle of 82 is about 130 degrees, and it is inserted by hitting with a hammer. Once inserted, the claw portion 282 that exceeds 90 degrees acts as a stopper, and will not come off even if the drill 6 is continuously operated. To remove the pin 282, the claw 2
The tip of the steel bar portion 281 without 82 is punched out by using the hole 222.
【００１２】継手２２の外周円径はスクリューロッド径
に略等しいが、鍔２４に継手２２を一体的につなげる接
合部２５は括れた短円柱を形成する。括れた接合部２５
を利用して鍔２４の下面へ止具３を係止できるようにす
るためである。符号２６は、ヘッド部２１と継手２２と
の軸心を通ってヘッド部２１の上面から六角柱穴２２１
へ縦通する貫通孔を示す。The diameter of the outer circumference of the joint 22 is approximately equal to the diameter of the screw rod, but the joint portion 25 that integrally connects the joint 22 to the collar 24 forms a constricted short cylinder. Tightened joint 25
This is because the stopper 3 can be locked to the lower surface of the collar 24 by utilizing. Reference numeral 26 indicates a hexagonal hole 221 from the upper surface of the head portion 21 through the axis of the head portion 21 and the joint 22.
Shows a through hole extending vertically.
【００１３】止具３は二分割した割りフランジからな
る。止具３，３は接合部２５に取付けると、内径が接合
部２５の外径より僅かに大きい。雄継手２を上向付勢に
対し円滑移動させるためである。また、図１の如く鍔２
４の下面の略全体を受け止め、鍔２４を確実に係止でき
るよう段差面３１を有する。段差ｈは鍔２４の肉厚ｔよ
り１５ｍｍ程大きい。雄継手２が斯る範囲で上向き移動
できるようにするためである。The stopper 3 comprises a split flange divided into two parts. When the stoppers 3 are attached to the joint portion 25, the inner diameter thereof is slightly larger than the outer diameter of the joint portion 25. This is for smoothly moving the male joint 2 with respect to the upward bias. In addition, as shown in FIG.
4 has a stepped surface 31 so as to receive substantially the entire lower surface and securely engage the collar 24. The step h is larger than the wall thickness t of the collar 24 by about 15 mm. This is for allowing the male joint 2 to move upward in such a range.
【００１４】ここで、段差面３１には騒音防止板３２を
載置している。ボタンビット６１の打撃反力で上向移動
した雄継手２が復帰するときに、段差面３１と鍔２４と
がぶつかって騒音をだす。これを防止するのに効果があ
ったからである。騒音防止板３２の材質は、弾性変形す
るものであれば合成ゴム等のいずれでもよい。本実施例
ではウレタン樹脂を用いた。止具３は、出張り縁１４の
フランジと同径で、ボルト穴も一致する。A noise prevention plate 32 is placed on the step surface 31. When the male joint 2 that has moved upward due to the impact reaction force of the button bit 61 returns, the step surface 31 collides with the collar 24 and makes noise. This is because it was effective in preventing this. The material of the noise prevention plate 32 may be synthetic rubber or the like as long as it is elastically deformable. In this embodiment, urethane resin is used. The stopper 3 has the same diameter as the flange of the projecting edge 14, and the bolt holes also coincide with each other.
【００１５】弾性体４は、ウレタン樹脂製でリング状の
環体としたもので、中央部に孔４１を有する。弾性体４
の厚みは３５ｍｍで段溝１１２の深さに略等しく、且つ
弾性体４の直径は段溝径と略一致し、弾性体４は段溝１
１２へ配置できるようになっている。ねじ部品５は鍔２
４の下面に係止して出張り縁１４へ止具３を締付け固着
するもので、ボルト５１とナット５２からなる。The elastic body 4 is made of urethane resin and is a ring-shaped ring body, and has a hole 41 in the center thereof. Elastic body 4
Has a thickness of 35 mm and is substantially equal to the depth of the step groove 112, and the diameter of the elastic body 4 is substantially equal to the step groove diameter.
It can be placed at 12. The screw part 5 is a collar 2
The stopper 3 is secured to the lower surface of the fastener 4 by fastening the stopper 3 to the protruding edge 14, and is composed of a bolt 51 and a nut 52.
【００１６】上記構成部品を用いて、振動吸収装置は以
下のごとく組立てられる。段溝１１２内に配置するよう
弾性体４を雌継手１へ挿入する。そして、ヘッド部２１
を六角柱穴１１１へ嵌挿して、弾性体４が挟持されるよ
う雌継手１と雄継手２とを弾性体４に当接する。その
後、止具３の段差面３１に騒音防止板３２を敷き、ここ
を鍔２４の下面に係止して、止具３を出張り縁１４にボ
ルト５１とナット５２で固着する。そうして、弾性体４
の厚みが約３０ｍｍ程になるまでボルト締めを行い、弾
性体４を圧着し、透孔１３と貫通孔２６と孔４１とを気
密性を保持させ且つ連通させることで杭穴掘削用の振動
吸収装置が完成する。Using the above components, the vibration absorber is assembled as follows. The elastic body 4 is inserted into the female joint 1 so as to be arranged in the step groove 112. And the head portion 21
Is inserted into the hexagonal column hole 111, and the female joint 1 and the male joint 2 are brought into contact with the elastic body 4 so that the elastic body 4 is sandwiched. After that, a noise prevention plate 32 is laid on the stepped surface 31 of the stopper 3, and this is locked to the lower surface of the collar 24, and the stopper 3 is fixed to the projecting edge 14 with the bolt 51 and the nut 52. Then, the elastic body 4
Is tightened to a thickness of about 30 mm, the elastic body 4 is crimped, and the through hole 13, the through hole 26, and the hole 41 are kept airtight and communicate with each other, thereby absorbing vibration for pile hole excavation. The device is completed.
【００１７】このように構成した振動吸収装置は、図１
のように雄継手２が上向付勢され弾性体４が圧着されて
も、まだ弾性変形を生じせめてこれを吸収できる。そう
して、雄継手２は止具３で鍔２４下面が係止されるが、
段差ｈが上向方向へ移動できる範囲を与え、且つヘッド
部２１も更に六角柱穴１１１へ入り込む余裕部２３を残
しているので、打撃反力で雄継手２に与える振動を確実
に吸収する。更に、斯る振動吸収装置は、透孔１３から
孔４１を経て貫通孔２６へ抜ける圧縮空気の供給通路を
有しているので、掘削ドリル６と減速機７２とのいずれ
の位置にも設置できる。The vibration absorber having the above structure is shown in FIG.
Even if the male joint 2 is urged upward and the elastic body 4 is pressure-bonded as described above, elastic deformation can still occur and this can be absorbed. Then, the lower surface of the collar 24 of the male joint 2 is locked by the stopper 3,
Since the step h provides a range in which the step h can move upward and the head portion 21 also has a margin portion 23 that further enters the hexagonal column hole 111, the vibration applied to the male joint 2 by the impact reaction force is reliably absorbed. Further, since such a vibration absorbing device has a supply path for compressed air that passes from the through hole 13 through the hole 41 to the through hole 26, it can be installed at any position of the drill 6 and the speed reducer 72. .
【００１８】図３は、本実施例に係る振動吸収装置を掘
削機に取付けたところを示す。本実施例では掘削ドリル
６の直ぐ真上にこの振動吸収装置を固定している。符号
６１はボタンビット、７１はモータ、７２は減速機を示
す。スクリューロッド８は圧縮空気が通るよう中空パイ
プで構成され、その上端にスイベル９１を接続し、これ
に圧縮空気配管９２がつながる。符号７３は重機、７４
はリード、７５はワイヤ、７７はスライド金具を示す。
かくして杭穴を掘削したが、条件は圧縮空気圧力１０.
５Ｋｇ／ｃｍ2Ｇで、圧縮空気量３５ｍ3／ｍｉｎとし
た。FIG. 3 shows a vibration absorber according to this embodiment mounted on an excavator. In the present embodiment, this vibration absorbing device is fixed immediately above the drill 6. Reference numeral 61 is a button bit, 71 is a motor, and 72 is a speed reducer. The screw rod 8 is composed of a hollow pipe through which compressed air passes, and a swivel 91 is connected to the upper end thereof, and a compressed air pipe 92 is connected to this. Reference numeral 73 is a heavy machine, 74
Is a lead, 75 is a wire, and 77 is a slide fitting.
Thus, the pile hole was excavated, but the condition was compressed air pressure 10.
The amount of compressed air was 5 m 3 / min at 5 kg / cm 2 G.
【００１９】（２）実施例２ 本実施例は、図５の如く出張り縁１４を遊合フランジで
構成したものである。このように出張り縁１４は必ずし
も雌継手１と一体的でなくともよい。また、ヘッド部２
１と余裕部２３と鍔２４とを六角柱穴１１１内に配置す
る構造をとる。止具３の肉厚を薄くさせるためである。
本実施例も止具３に騒音防止板３２を載置する。また、
雌継手１の段溝１１２をリング状に形成し、雄継手２の
凸状部２１１とで弾性体４の弾性歪による変形を収容す
る空間２７を形成する。継手１２，２２の構造は実施例
１と同じである。斯る振動吸収装置を掘削機に取付け、
実施例１と同一条件で振動伝播を調べた。(2) Embodiment 2 In this embodiment, as shown in FIG. 5, the projecting edge 14 is composed of a loose flange. Thus, the projecting edge 14 does not necessarily have to be integral with the female joint 1. Also, the head portion 2
1, the allowance portion 23, and the collar 24 are arranged in the hexagonal prismatic hole 111. This is to reduce the thickness of the stopper 3.
Also in this embodiment, the noise prevention plate 32 is placed on the stopper 3. Also,
The step groove 112 of the female joint 1 is formed in a ring shape, and the convex portion 211 of the male joint 2 forms a space 27 for accommodating deformation of the elastic body 4 due to elastic strain. The structures of the joints 12 and 22 are the same as in the first embodiment. Attach such a vibration absorber to the excavator,
Vibration propagation was examined under the same conditions as in Example 1.
【００２０】（３）実施例の効果 図３の如く振動吸収装置を取付けて、ボタンビット６１
の打撃力で掘削したら、打撃力は雄継手の上向きの動き
で吸収されて、振動吸収装置より上方での振動は殆ど消
滅した。そして、ボトムビットの打撃反力を吸収すべく
上向移動した雄継手２が降下しても直かに止具３に当ら
ず、騒音防止板３２上に降りるので、騒音をだすことも
なかった。また、本実施例では、振動吸収装置を掘削ド
リル６の直ぐ上に取付け、ボタンビット６１からの衝撃
力を近い地点で抑制緩和する。従って、掘削穴へ振動吸
収装置が入っていくと、振動と共に派生する騒音レベル
が低下し、消音装置としても効を奏した。(3) Effect of the embodiment As shown in FIG. 3, a vibration absorber is attached to the button bit 61.
When the excavating force was applied, the impact force was absorbed by the upward movement of the male joint, and the vibration above the vibration absorber almost disappeared. Then, even if the male joint 2 that has moved upward to absorb the impact reaction force of the bottom bit descends, it does not directly hit the stopper 3 and descends onto the noise prevention plate 32, so that no noise is emitted. . Further, in the present embodiment, the vibration absorbing device is attached immediately above the excavating drill 6 to suppress and reduce the impact force from the button bit 61 at a near point. Therefore, when the vibration absorbing device enters the excavation hole, the noise level derived along with the vibration is lowered, and the noise absorbing device is also effective.
【００２１】尚、本発明においては前記具体的実施例に
示すものに限らず、目的，用途に応じて種々変更した実
施例とすることができる。例えば、図１の振動吸収装置
を逆さに設置してもよく、出張り縁１４はフランジに限
定せず、止具３と出張り縁１４とを固着できる方法であ
ればよい。また、掘削機への振動吸収装置の取付け場所
は減速機７２の至近位置でも構わない。継手１２，２２
も継手構造を有せばコッタジョイントに限らずフランジ
継手等でもよい。角柱穴も六角柱穴に限らず多角柱であ
ればいずれでもよい。It should be noted that the present invention is not limited to the specific embodiment described above, but various modifications can be made according to the purpose and application. For example, the vibration absorber of FIG. 1 may be installed upside down, and the projecting edge 14 is not limited to a flange, and any method capable of fixing the stopper 3 and the projecting edge 14 may be used. Further, the vibration absorbing device may be attached to the excavator at a position close to the speed reducer 72. Joints 12, 22
Is not limited to a cotter joint as long as it has a joint structure, a flange joint or the like may be used. The prismatic hole is not limited to the hexagonal prismatic hole and may be any polygonal prism.
【００２２】そして、振動吸収装置内は圧縮空気のみ流
下するものでなく、掘削ドリル６の上に二方切替弁を取
付け、掘削ドリル６内へ根固め液が流れないようにし
て、該二方切替弁と減速機７２との間に本発明に係る振
動吸収装置を配設し、圧縮空気配管９２に根固め液を切
替え注入することによって、振動吸収装置内を圧縮空気
に代って根固め液が流れるようにしてもよい。掘削穴を
掘った後、根固め液へ切替え、掘削ドリルを引上げなが
ら穴底へ根固め液を注入してくることができる。In the vibration absorber, only compressed air does not flow down, and a two-way switching valve is mounted on the drilling drill 6 to prevent the rooting liquid from flowing into the drilling drill 6. By disposing the vibration absorbing device according to the present invention between the switching valve and the speed reducer 72, and by selectively injecting the rooting liquid into the compressed air pipe 92, the inside of the vibration absorbing device is rooted instead of the compressed air. The liquid may be allowed to flow. After digging the drilling hole, it is possible to switch to the root compaction liquid and inject the root consolidation liquid into the bottom of the hole while pulling up the drill.
【００２３】[0023]
【発明の効果】以上のごとく本発明の振動吸収装置は、
弾性体を弾性変形させるようにして雄継手が上向き移動
できるので、ボタンビットの打撃反力を吸収して減速機
やモータを保護するのに多大な効果を発揮する。As described above, the vibration absorbing device of the present invention is
Since the male joint can move upward by elastically deforming the elastic body, it exerts a great effect in protecting the speed reducer and the motor by absorbing the impact reaction force of the button bit.
【図１】実施例１に示す振動吸収装置の縦断面図であ
る。FIG. 1 is a vertical cross-sectional view of a vibration absorber according to a first exemplary embodiment.
【図２】図１の分解図である。FIG. 2 is an exploded view of FIG.
【図３】図１の振動吸収装置を掘削機に取付けた掘削状
態説明図である。3 is an explanatory view of an excavation state in which the vibration absorber of FIG. 1 is attached to an excavator.
【図４】図１でノズルと雄継手とが結合した状態で、ピ
ン溝を通る横断面図を示す。FIG. 4 is a transverse cross-sectional view through the pin groove in a state where the nozzle and the male joint are connected to each other in FIG.
【図５】実施例２に示す振動吸収装置の縦断面図であ
る。FIG. 5 is a vertical cross-sectional view of a vibration absorbing device according to a second embodiment.
１ 雌継手 １１ キャップ状体 １２ 継手 １３ 透孔 １４ 出張り縁 ２ 雄継手 ２１ ヘッド部 ２２ 継手 ２４ 鍔 ２６ 貫通孔 ３ 止具 ４ 弾性体 ４１ 孔 DESCRIPTION OF SYMBOLS 1 Female joint 11 Cap-shaped body 12 Joint 13 Through hole 14 Projection edge 2 Male joint 21 Head part 22 Joint 24 Collar 26 Through hole 3 Stopper 4 Elastic body 41 hole
Claims (1)
ャップ状体であって、下端外周壁に出張り縁を設け且つ
縦通する透孔を形成した雌継手（１）と、該角柱穴に嵌
挿されるヘッド部を上部に継手を下部に有し、該ヘッド
部より下方の外側壁に突出した鍔を設け且つ縦通する貫
通孔を形成した雄継手（２）と、角柱穴にヘッド部を嵌
挿し該雄継手を該雌継手に連結するよう鍔の下面に係止
して前記出張り縁に固着させる止具（３）と、中央部に
孔を有する弾性体（４）とを備え、前記角柱穴に前記弾
性体を配置した後、ヘッド部を嵌挿し、弾性体が圧着さ
れるように鍔に係止した止具を出張り縁へ固着して、前
記透孔と前記貫通孔と前記孔とを気密性を保持しながら
連通させると共に前記雄継手に対する上向圧力を更に弾
性体が圧着されるように雄継手が上向き移動し、振動吸
収できるように構成したことを特徴とする杭穴掘削用の
振動吸収装置。1. A female joint (1) which is a cap-shaped body having a joint in the upper portion thereof and having a prismatic hole formed therein, wherein a lower end outer peripheral wall is provided with a projecting edge and a through hole is formed longitudinally. A male joint (2) having a head part to be inserted into the prismatic hole in the upper part, a joint in the lower part, a flange protruding from an outer wall below the head part, and a through hole extending vertically, A stopper (3) for inserting the head portion into the hole to lock the male joint to the female joint and fixing the male joint to the female edge, and an elastic body (4) having a hole in the central portion. ), The head is fitted in after the elastic body is arranged in the prismatic hole, and a stopper locked to the brim so that the elastic body is crimped is fixed to the protruding edge, and the through hole is formed. And the through hole and the hole are communicated with each other while maintaining airtightness, and the upward pressure to the male joint is further pressed by the elastic body. A vibration absorbing device for pile hole excavation, characterized in that the male joint is configured to move upward and absorb vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25405892A JP2631606B2 (en) | 1992-08-29 | 1992-08-29 | Vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25405892A JP2631606B2 (en) | 1992-08-29 | 1992-08-29 | Vibration absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0681569A true JPH0681569A (en) | 1994-03-22 |
| JP2631606B2 JP2631606B2 (en) | 1997-07-16 |
Family
ID=17259647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25405892A Expired - Fee Related JP2631606B2 (en) | 1992-08-29 | 1992-08-29 | Vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2631606B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101110352B1 (en) * | 2011-03-16 | 2012-02-15 | 박정열 | base rock fracture apparatus and base fracture method utilizing the same |
| JP2021025380A (en) * | 2019-08-08 | 2021-02-22 | 京葉リース株式会社 | Excavation head |
| JP2021059885A (en) * | 2019-10-07 | 2021-04-15 | 京葉リース株式会社 | Drilling device, connector and drilling head |
-
1992
- 1992-08-29 JP JP25405892A patent/JP2631606B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101110352B1 (en) * | 2011-03-16 | 2012-02-15 | 박정열 | base rock fracture apparatus and base fracture method utilizing the same |
| JP2021025380A (en) * | 2019-08-08 | 2021-02-22 | 京葉リース株式会社 | Excavation head |
| JP2021059885A (en) * | 2019-10-07 | 2021-04-15 | 京葉リース株式会社 | Drilling device, connector and drilling head |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2631606B2 (en) | 1997-07-16 |
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