JPS6332228Y2 - - Google Patents
Info
- Publication number
- JPS6332228Y2 JPS6332228Y2 JP1984015825U JP1582584U JPS6332228Y2 JP S6332228 Y2 JPS6332228 Y2 JP S6332228Y2 JP 1984015825 U JP1984015825 U JP 1984015825U JP 1582584 U JP1582584 U JP 1582584U JP S6332228 Y2 JPS6332228 Y2 JP S6332228Y2
- Authority
- JP
- Japan
- Prior art keywords
- main body
- blade
- rock crushing
- crushing rod
- rock
- 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
- 239000011435 rock Substances 0.000 claims description 28
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、落下衝撃によつて地盤の掘り起しを
行なう砕岩棒の改良に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a rock crushing bar that excavates the ground by a falling impact.
（従来の技術及びその問題点）
従来橋梁の基礎工事等に於て、第３図に示す様
な縦長で重心が下部に位置する砕岩棒１０を作業
船から海中に吊り下げて落下させ、その落下衝撃
で海底地盤を掘削することが行なわれている。(Prior art and its problems) Conventionally, in foundation work for bridges, etc., a rock crushing bar 10, which is vertically elongated and whose center of gravity is located at the bottom as shown in Figure 3, is suspended from a work boat into the sea and dropped. Excavation of the seabed is carried out using the impact of a fall.
砕岩棒は下端の刃先１０ａに耐摩耗性金属が溶
着されているが、砕岩棒は重量が10〜20トンもあ
り、地盤への衝撃は淒まじく刃先１０ａが早期の
内に変形し或はすり減つてしまつた。砕岩棒は鋳
造により一体成形されているため、刃先１０ａが
許容量以上に摩耗変形すると、打込み効果が著し
く低下するため、先端が摩耗しただけで砕岩棒の
全体を交換しなければならない無駄があつた。 Rock crushing rods have wear-resistant metal welded to the cutting edge 10a at the bottom, but rock crushing rods weigh 10 to 20 tons, and the constant impact to the ground can cause the cutting edge 10a to deform or scrape quickly. It has decreased. Since the rock crushing rod is integrally molded by casting, if the cutting edge 10a is worn and deformed beyond the allowable amount, the driving effect will be significantly reduced, resulting in the waste of having to replace the entire rock crushing rod even if the tip is worn out. Ta.
本考案は先端刃体のみの交換を可能とし、従来
の無駄を省くことを目的とする。 The purpose of this invention is to make it possible to replace only the tip blade, eliminating the waste that would be required in the conventional method.
（問題を解決する手段）
上記目的を達成するために、本願考案の砕岩棒
は、砕岩棒本体１と該本体１の下面に着脱可能に
取付けられた刃体４とで構成され、本体の下面１
１は本体の長手方向と直交する平面に形成され、
刃体４の上面が本体１の下面に当たり、本体１と
刃体４の一方に係合凸部２、他方に係合凹部５を
形成して、凸部２と凹部５を挿脱可能に嵌合し、
該凸部２と凹部５とに一連に開設した貫通軸孔
３，３１に連結軸６を着脱に嵌めて、砕岩棒本体
１に対し刃体４を取り外し可能に固定し、前記連
結軸６は外周に樹脂又はゴムの弾性層６２が形成
されている。(Means for Solving the Problem) In order to achieve the above object, the rock crushing rod of the present invention is composed of a rock crushing rod body 1 and a blade 4 detachably attached to the lower surface of the body 1. 1
1 is formed on a plane perpendicular to the longitudinal direction of the main body,
The upper surface of the blade 4 is in contact with the lower surface of the main body 1, an engagement protrusion 2 is formed on one of the main body 1 and the blade 4, and an engagement recess 5 is formed on the other, and the protrusion 2 and the recess 5 are removably fitted. together,
The connecting shaft 6 is removably fitted into the through shaft holes 3 and 31 formed in series in the convex part 2 and the recessed part 5, and the blade body 4 is removably fixed to the rock crushing bar body 1. An elastic layer 62 of resin or rubber is formed on the outer periphery.
（作用）
連結軸６を抜くと、刃体４は砕岩棒本体１から
外れるから、刃体４が摩耗すれば刃体だけを交換
出来、従来の様に刃先の摩耗だけで砕岩棒全体を
交換する無駄はない。(Function) When the connecting shaft 6 is pulled out, the blade body 4 comes off from the rock crushing bar body 1, so if the blade body 4 wears out, only the blade body can be replaced, and unlike conventional methods, the entire rock crushing bar can be replaced by just wearing out the cutting edge. There's no point in doing it.
（本考案の特有の効果）
本願は作業船から海底岩盤へ落下させる等、高
所より落下させて、その衝撃によつて岩盤を破壊
するものであるから、その衝撃力も高めるため
に、砕岩棒が刃体４を下向にして垂直姿勢で落下
する様に、下部が上部に較べて重くなる様に形成
されている。(Special effects of the present invention) Since the present invention is intended to be dropped from a high place, such as from a work boat onto the bedrock of the seabed, the rock is destroyed by the impact. The lower part is formed to be heavier than the upper part so that the blade falls in a vertical position with the blade 4 facing downward.
従つて、刃体４が岩盤に当つたときの衝撃は本
体１の下面１１で受けるが、該下面は本体１の長
手方向、即ち、落下方向に対して直交する平面１
１に形成され、該平面が刃体４の上面に面接触し
ているため、本体１の下面全体に衝撃荷重が分散
され、本体下面の変形を防止出来る。 Therefore, when the blade body 4 hits the rock, the impact is received by the lower surface 11 of the main body 1, but the lower surface is in the plane 1 perpendicular to the longitudinal direction of the main body 1, that is, the falling direction.
1, and the flat surface is in surface contact with the upper surface of the blade body 4, so that the impact load is distributed over the entire lower surface of the main body 1, and deformation of the lower surface of the main body 1 can be prevented.
更に、刃体４が岩盤に衝突した直後、衝突の反
動によつて本体１と刃体４との間が離れる力が作
用し、連結軸６に剪断力が作用する。 Furthermore, immediately after the blade body 4 collides with the rock, a force is applied to separate the main body 1 and the blade body 4 due to the reaction of the collision, and a shearing force is applied to the connecting shaft 6.
本願の場合、本体１と刃体４とを連結する連結
軸６の外周に弾性層６２が形成されているため、
前記連結軸６への剪断力は弾性層６２の弾性変形
によつて吸収され、連結軸の破損或は刃体４及び
本体１の貫通軸孔３，３１の変形を防止出来、刃
体４を交換する際の連結軸６の挿脱をスムーズに
行なうことが出来る。 In the case of the present application, since the elastic layer 62 is formed on the outer periphery of the connecting shaft 6 that connects the main body 1 and the blade body 4,
The shearing force applied to the connecting shaft 6 is absorbed by the elastic deformation of the elastic layer 62, thereby preventing damage to the connecting shaft or deformation of the through shaft holes 3, 31 of the blade body 4 and the main body 1. The connecting shaft 6 can be smoothly inserted and removed during replacement.
（実施例）
砕岩棒本体１は軟鋼で形成され、上端から下端
に徐々に拡大しており、重心は下端寄りに位置し
ている。(Example) The rock crushing rod main body 1 is formed of mild steel, gradually expands from the upper end to the lower end, and the center of gravity is located near the lower end.
本体１の上端には吊り下げ用チエーン（図示せ
ず）を繋ぐ係合部１２を具え、下面は本体１の長
手方向に直交する平面に形成されている。 The upper end of the main body 1 is provided with an engaging part 12 for connecting a suspension chain (not shown), and the lower surface is formed into a plane perpendicular to the longitudinal direction of the main body 1.
上記本体１の下面中央には係合凸部２が形成さ
れ、該凸部に本体１の軸心と直交して貫通軸孔３
が開設されている。 An engaging protrusion 2 is formed in the center of the lower surface of the main body 1, and a through shaft hole 3 is formed in the protrusion perpendicularly to the axis of the main body 1.
has been established.
上記本体１に取外し可能に固定される刃体４は
耐摩耗性に優れた特殊鋼で形成され、上面４１が
前記本体１の下面形状と同じ長方形であり、下部
に向けて徐々に細くなり、下端が刃部４２となつ
ている。 The blade 4, which is removably fixed to the main body 1, is made of special steel with excellent wear resistance, and has an upper surface 41 in the same rectangular shape as the lower surface of the main body 1, and gradually tapers toward the bottom. The lower end is a blade portion 42.
刃体４の上面中央には前記本体１の凸部２が挿
脱可能に嵌まる凹部５が形成されている。 A recess 5 is formed in the center of the upper surface of the blade 4, into which the protrusion 2 of the main body 1 is removably inserted.
刃体４にはその凹部５に本体の凸部２を嵌合し
て上面４１を本体１の下面１１に当てたときに、
本体１の貫通軸孔３に連続する貫通軸孔３１，３
１が開設されている。 When the protrusion 2 of the main body is fitted into the recess 5 of the blade 4 and the upper surface 41 is brought into contact with the lower surface 11 of the main body 1,
Through shaft holes 31, 3 continuous with the through shaft hole 3 of the main body 1
1 has been established.
上記貫通軸孔３，３１，３１に連結軸６が着脱
可能に嵌められ、本体１と刃体４とを分離可能に
連結している。 A connecting shaft 6 is removably fitted into the through shaft holes 3, 31, 31, and connects the main body 1 and the blade 4 in a separable manner.
連結軸６は金属軸体６１の外周をウレタン樹
脂、ゴム等による弾性層６２で被覆され、連結軸
６の両端には円形のプレート７，７が当てられ、
軸孔内にてプレートの外側にはスナツプリング８
が軸孔３１に開設した溝３２に嵌まつて装着され
ている。 The connecting shaft 6 has a metal shaft body 61 whose outer periphery is covered with an elastic layer 62 made of urethane resin, rubber, etc., and circular plates 7, 7 are placed on both ends of the connecting shaft 6.
There is a snap spring 8 on the outside of the plate inside the shaft hole.
is fitted into a groove 32 formed in the shaft hole 31.
砕岩棒の刃体は耐摩耗性の特殊鋼にて形成され
ているため、刃部の耐久性は従来よりも数倍向上
し又、繰り返し使用して刃部４２が摩耗変形すれ
ば連結軸６を抜いて刃体４を本体１から外し、新
たな刃体と交換出来る。本体１は直接地盤には衝
突しないため、殆んど損傷せず、長期に使用出来
経済的である。 Since the blade body of the rock crushing rod is made of wear-resistant special steel, the durability of the blade part is improved several times compared to conventional ones. The blade body 4 can be removed from the main body 1 by pulling it out and replaced with a new blade body. Since the main body 1 does not collide directly with the ground, there is almost no damage, and it can be used for a long time and is economical.
又、連結軸６の外周は弾性層６２で形成されて
いるため、地盤への打込みの反動によつて連結軸
６に掛かる衝撃は弾性層６２が吸収して軸６の変
形が防止され、更に軸６及びスナツプリング８は
刃体４の貫通軸孔３１，３１内に収まつて刃体４
の外部には露出していないため、地盤への打込み
時に軸６が損傷することはなく、軸６の挿脱をス
ムーズに行なうことが出来る。 In addition, since the outer periphery of the connecting shaft 6 is formed of an elastic layer 62, the impact applied to the connecting shaft 6 due to the reaction of driving into the ground is absorbed by the elastic layer 62, preventing deformation of the shaft 6. The shaft 6 and the snap spring 8 fit into the through shaft holes 31, 31 of the blade body 4, and the blade body 4
Since the shaft 6 is not exposed to the outside, the shaft 6 will not be damaged when driven into the ground, and the shaft 6 can be inserted and removed smoothly.
尚、本考案の実施に際し、砕岩棒の形状は図面
の様な牙形のものに限定されることはなく、周知
の丸軸状のものでも可く、又、実用新案登録請求
の範囲に記載の範囲内で種々の変形が可能であ
る。 In carrying out the present invention, the shape of the rock crushing rod is not limited to the fang-shaped one shown in the drawing, but may be a well-known round shaft-shaped one, and the shape of the rock crushing rod is not limited to the tooth-shaped one shown in the drawing. Various modifications are possible within the range.
第１図は砕岩棒の分解斜面図、第２図は砕岩棒
の要部断面図、第３図は従来例の正面図である。
１……砕岩棒、２……凸部、４……刃体、５…
…凹部、６……連結軸。
FIG. 1 is an exploded slope view of a rock crushing rod, FIG. 2 is a sectional view of the main part of the rock crushing rod, and FIG. 3 is a front view of a conventional example. 1...Rock crushing rod, 2...Protrusion, 4...Blade body, 5...
...Recess, 6...Connection shaft.
Claims (1)
せしめて下端の刃部を岩盤に食い込ませて岩盤を
破壊する砕岩棒に於て、砕岩棒は砕岩棒本体１と
該本体１の下面に着脱可能に取付けられた刃体４
とで構成され、本体の下面１１は本体の長手方向
と直交する平面に形成され、刃体４の上面が本体
１の下面に当たり、本体１と刃体４の一方に係合
凸部２、他方に係合凹部５を形成して凸部２と凹
部５を挿脱可能に嵌合し、該凸部２と凹部５とに
一連に開設した貫通軸孔３，３１に連結軸６を着
脱に嵌めて、砕岩棒本体１に対し刃体４を取り外
し可能に固定し、前記連結軸６は外周に樹脂又は
ゴムの弾性層６２が形成されている岩盤破壊用の
砕岩棒。 In a rock crushing rod that is formed vertically and has a blade section at the bottom and is dropped onto a bedrock and breaks the rock by causing the blade section at the lower end to bite into the bedrock, the rock crushing rod has a rock crushing rod body 1 and a bottom surface of the body 1. Detachably attached blade body 4
The lower surface 11 of the main body is formed in a plane perpendicular to the longitudinal direction of the main body, and the upper surface of the blade 4 is in contact with the lower surface of the main body 1. An engaging concave portion 5 is formed in the convex portion 2 and the concave portion 5 so that the convex portion 2 and the concave portion 5 are removably engaged, and the connecting shaft 6 is inserted into and detached from the through shaft holes 3 and 31 formed in series in the convex portion 2 and the concave portion 5. A rock crushing rod for rock breaking, in which a blade 4 is removably fixed to a rock crushing rod main body 1 by being fitted, and the connecting shaft 6 has an elastic layer 62 of resin or rubber formed on the outer periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1582584U JPS60130899U (en) | 1984-02-06 | 1984-02-06 | Rock crushing rod for breaking rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1582584U JPS60130899U (en) | 1984-02-06 | 1984-02-06 | Rock crushing rod for breaking rock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60130899U JPS60130899U (en) | 1985-09-02 |
| JPS6332228Y2 true JPS6332228Y2 (en) | 1988-08-29 |
Family
ID=30502021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1582584U Granted JPS60130899U (en) | 1984-02-06 | 1984-02-06 | Rock crushing rod for breaking rock |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60130899U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5777787A (en) * | 1980-10-30 | 1982-05-15 | Sumitomo Jukikai Chutan Kk | Composite tooth for excavation |
-
1984
- 1984-02-06 JP JP1582584U patent/JPS60130899U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5777787A (en) * | 1980-10-30 | 1982-05-15 | Sumitomo Jukikai Chutan Kk | Composite tooth for excavation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60130899U (en) | 1985-09-02 |
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