JPH0932444A - Hammer shovel - Google Patents
Hammer shovelInfo
- Publication number
- JPH0932444A JPH0932444A JP18723895A JP18723895A JPH0932444A JP H0932444 A JPH0932444 A JP H0932444A JP 18723895 A JP18723895 A JP 18723895A JP 18723895 A JP18723895 A JP 18723895A JP H0932444 A JPH0932444 A JP H0932444A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- shell
- movable
- engagement member
- body portion
- 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
Links
Landscapes
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、基礎杭などを打
ち込む縦坑を掘削するためのハンマーシャベルに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hammer shovel for excavating a shaft which drives a foundation pile or the like.
【０００２】[0002]
【従来の技術】従来より、基礎杭などを打ち込む縦坑を
掘削するためのハンマーシャベルが知られている。図９
乃至１１に示すように、このハンマーシャベルはクレー
ンを操作して地上高く吊り上げて落下せしめ、その落下
衝撃力で縦坑を掘削した後、下端の掘屑把持機構21の一
対のシェル22を閉塞駆動して掘屑を掴み込み、再び吊り
上げて移動させた後、前記シェル22を開放駆動して掘屑
を外に放出するものである。2. Description of the Related Art Conventionally, a hammer shovel for excavating a shaft which drives a foundation pile or the like has been known. FIG.
As shown in FIGS. 11 to 11, this hammer shovel operates a crane to hoist it high above the ground and drop it, and after the vertical shaft is excavated by the drop impact force, the pair of shells 22 of the scrap holding mechanism 21 at the lower end is driven to be closed. Then, the cutting waste is grabbed, lifted again and moved, and then the shell 22 is driven to open to discharge the cutting waste to the outside.
【０００３】掘屑把持機構21を構成するシェル22は、土
砂の掘削の際に土中からの湧き水の水圧により閉塞状態
とせしめようとする作用を受けることがあるが、シェル
22が勝手に閉塞状態になってしまうのでは土砂をうまく
掴み込むことができない。したがってシェル22の開閉状
態を制御するため、一定長さを要するスプリング23によ
りシェル22の開放状態を維持する方向にバネ付勢してい
る。[0003] The shell 22 constituting the scrap holding mechanism 21 may be subjected to the action of closing the shell due to the water pressure of the spring water from the ground when excavating the sand.
If 22 is blocked without permission, it will not be able to grab the earth and sand well. Therefore, in order to control the open / closed state of the shell 22, the spring 23, which requires a certain length, is biased in a direction to maintain the opened state of the shell 22.
【０００４】ところで、このハンマーシャベルは高さ制
限のない所では好適に使用できるのであるが、高速道路
の下や橋の下などのように高さ制限がある場所で用いる
際は、長すぎて使用しにくい場合があるという問題があ
った。By the way, this hammer shovel can be suitably used in places where there is no height limit, but when used in places where there is a height limit such as under a highway or under a bridge, it is too long. There is a problem that it may be difficult to use.
【０００５】[0005]
【発明が解決しようとする課題】そこで、この発明は、
従来よりもその長さを短くすることができるハンマーシ
ャベルを提供しようとするものである。SUMMARY OF THE INVENTION Therefore, the present invention
An object of the present invention is to provide a hammer shovel whose length can be made shorter than before.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するため
この発明では次のような技術的手段を講じている。 （請求項１）この発明のハンマーシャベルは、掘屑把持
機構のシェルの回動中心を有する本体部と、前記本体部
に対する上下方向の相対変位が可能であり且つその変位
により前記シェルを開閉駆動する可動部とを具備し、前
記可動部には摩擦係合部材が本体部側への係合を可能に
配設され、可動部が下方位置に配置するときにはシェル
が開放状態とされ且つ前記摩擦係合部材は本体部側に係
合せしめられており、本体部に対し可動部を上方に向け
て相対変位せしめる際に前記摩擦係合部材と本体部との
係合が解除するようにしたことを特徴とする。In order to solve the above-mentioned problems, the present invention employs the following technical means. (Claim 1) A hammer shovel according to the present invention is capable of relative displacement in a vertical direction with respect to a main body portion having a rotation center of a shell of an excavation gripping mechanism, and the displacement causes the shell to open and close. And a frictional engagement member is disposed on the movable part so as to be engageable with the main body side. When the movable part is arranged at the lower position, the shell is opened and The engagement member is engaged with the main body portion side, and the engagement between the friction engagement member and the main body portion is released when the movable portion is relatively displaced upward with respect to the main body portion. Is characterized by.
【０００７】前記のように構成したので、可動部が下方
位置に配置しシェルが開放状態であるときに、土中から
の湧き水の水圧により閉塞状態とせしめようとする作用
を受けた際、摩擦係合部材は本体部側に係合せしめられ
ており、本体部に対する可動部の上方に向けての相対変
位が制限された状態にあるので、従来のもののようなス
プリングを用いなくてもシェルが勝手に閉塞状態になっ
てしまうことはない。なお、本体部に対し可動部を上方
に向けて相対変位せしめると、前記摩擦係合部材と本体
部との係合を解除することができる。 （請求項２）摩擦係合部材は、本体部側と係合するよう
な揺動を可能として可動部に軸支されていることとして
実施することができる。 （請求項３）可動部の隔壁に形成された穴部を通して摩
擦係合部材は本体部側と係合するとともに、可動部を本
体部に対し上方に向けて相対変位せしめる際、摩擦係合
部材が前記穴部の構成辺に案内されて上方に向けて回動
することにより、本体部と摩擦係合部材との係合が解除
されることとして実施することができる。With the above construction, when the movable part is arranged at the lower position and the shell is in the open state, when the action of closing the shell due to the water pressure of the spring water from the soil causes friction, The engaging member is engaged with the main body portion side, and the relative displacement of the movable portion upward with respect to the main body portion is limited, so that the shell does not need to use a spring unlike the conventional one. It will not be blocked by itself. It should be noted that when the movable portion is relatively displaced upward with respect to the body portion, the engagement between the friction engagement member and the body portion can be released. (Claim 2) The frictional engagement member can be implemented as being pivotally supported by the movable portion so as to be capable of swinging so as to engage with the main body portion side. (Claim 3) The friction engagement member engages with the main body portion side through the hole formed in the partition wall of the movable portion, and when the movable portion is relatively displaced upward with respect to the main body portion. Can be carried out by releasing the engagement between the main body portion and the friction engagement member by being guided by the side of the hole and rotating upward.
【０００８】[0008]
【発明の実施の形態】以下、この発明の実施の形態を図
面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１乃至４に示すように、この実施形態の
ハンマーシャベルは基礎杭を打ち込む縦坑を掘削するた
めに、クレーン（図９参照）を操作して地上高く吊り上
げて落下せしめ、その落下衝撃力で縦坑を掘削し、その
後、下端の掘屑把持機構１の一対のシェル２を閉塞駆動
して掘屑を掴み込み、再び吊り上げて移動させた後、前
記シェル２を開放駆動して掘屑を外に排出するものであ
る。As shown in FIGS. 1 to 4, in order to excavate a vertical shaft into which a foundation pile is to be driven, the hammer shovel of this embodiment is operated by a crane (see FIG. 9) to be lifted high above the ground and dropped. The vertical shaft is excavated by the impact force, and then the pair of shells 2 of the lower end scrap holding mechanism 1 are driven to be closed to grab the scraps, lifted and moved again, and then the shells 2 are driven to open. It discharges the cuttings to the outside.
【００１０】このハンマーシャベルは、掘屑把持機構１
のシェル２の回動中心を有する本体部３と、前記本体部
３に対する上下方向の相対変位が可能であり、且つその
変位により前記シェル２を開閉駆動する可動部４とを具
備している。掘屑把持機構１のシェル２は、可動部４に
駆動端５を有する。This hammer shovel is equipped with a debris holding mechanism 1
The main body 3 having the center of rotation of the shell 2 and the movable portion 4 capable of vertical displacement relative to the main body 3 and driving the shell 2 to open and close by the displacement. The shell 2 of the debris gripping mechanism 1 has a movable end 4 and a drive end 5.
【００１１】図１及び４に示すように、前記可動部４に
は左右一対の摩擦係合部材６が、本体部３側への係合を
可能に配設されている。この摩擦係合部材６は、本体部
３側と係合するような揺動を可能として可動部４に軸支
されている。そして可動部４の隔壁７に形成された穴部
８を通して、摩擦係合部材６は本体部３側と係合するよ
うにしている。As shown in FIGS. 1 and 4, a pair of left and right frictional engagement members 6 are arranged on the movable portion 4 so as to be engaged with the main body portion 3 side. The friction engagement member 6 is pivotally supported by the movable portion 4 so that the friction engagement member 6 can swing so as to engage with the main body portion 3 side. The frictional engagement member 6 is adapted to engage with the main body 3 side through the hole 8 formed in the partition wall 7 of the movable portion 4.
【００１２】図１右半分及び図２に示すように可動部４
が下方位置に配置するときにはシェル２が開放状態とさ
れ、且つ図５に示すように前記摩擦係合部材６は本体部
３側に係合せしめられている。摩擦係合部材６は可動部
４の隔壁７に形成された穴部８の構成辺により下方に向
けて押圧せしめられ、本体部３側に強く係合せしめられ
て相互間に大きな摩擦係合力が生じている。この状態で
は摩擦係合力により可動部４は本体部３に対する相対変
位を拘束されており、可動部４は本体部３に対して上方
へ変位できない状態にある。As shown in the right half of FIG. 1 and FIG.
Is placed in the lower position, the shell 2 is opened and the friction engagement member 6 is engaged with the main body 3 side as shown in FIG. The friction engagement member 6 is pressed downward by the side of the hole 8 formed in the partition wall 7 of the movable portion 4, and is strongly engaged with the main body portion 3 side so that a large friction engagement force is exerted between them. Has occurred. In this state, the movable portion 4 is restrained from being relatively displaced with respect to the main body portion 3 by the frictional engagement force, and the movable portion 4 cannot be displaced upward with respect to the main body portion 3.
【００１３】したがって、可動部４に在る掘屑把持機構
１のシェル２の駆動端５は静止したままの状態を維持せ
しめられるので、土砂の掘削の際に土中からの湧き水の
水圧により閉塞状態とせしめようとする作用を受けても
勝手に閉塞状態になってしまうことはない。Therefore, since the driving end 5 of the shell 2 of the excavation gripping mechanism 1 in the movable part 4 can be maintained in a stationary state, it is blocked by the water pressure of spring water when excavating the earth and sand. Even if it receives the action of trying to make it into a state, it will not be in the closed state without permission.
【００１４】一方、図１左半分及び図３に示すように本
体部３に対し可動部４を上方に向けて相対変位せしめる
際に、図６に示すように前記摩擦係合部材６と本体部３
との係合を解除するようにしている。すなわち、可動部
４を本体部３に対し上方に向けて相対変位せしめる際、
摩擦係合部材６が可動部４の隔壁７に形成された穴部８
の構成辺に上方へ押圧されて上方に向けて回動すること
により、摩擦係合部材６と本体部３側との係合が解除さ
れるようにしている。したがって、掘屑把持機構１のシ
ェル２の駆動端５を回動させこの一対のシェル２を閉塞
状態とせしめ土砂などの掘屑を掴み込むことができる。On the other hand, when the movable portion 4 is relatively displaced upward with respect to the body portion 3 as shown in the left half of FIG. 1 and FIG. 3, as shown in FIG. Three
The engagement with is to be released. That is, when the movable portion 4 is relatively displaced upward with respect to the main body portion 3,
The friction engagement member 6 is a hole 8 formed in the partition wall 7 of the movable portion 4.
The frictional engagement member 6 and the main body portion 3 side are disengaged from each other by being pressed upward by the component side and rotating upward. Therefore, the drive end 5 of the shell 2 of the excavation gripping mechanism 1 is rotated to bring the pair of shells 2 into the closed state, and the excavation such as earth and sand can be grasped.
【００１５】前記可動部４には前記一対のシェル２の駆
動端５を回動自在に軸支する対向したスライド部材９が
配設され、可動部４が本体部３に対し上下方向に相対変
位すると、前記一対のスライド部材９は回動中心に対し
て全体として円弧状の軌跡で変位するようにしている。The movable portion 4 is provided with opposed slide members 9 which rotatably support the drive ends 5 of the pair of shells 2, and the movable portion 4 is vertically displaced relative to the main body portion 3. Then, the pair of slide members 9 are displaced as a whole in an arcuate locus with respect to the center of rotation.
【００１６】また図７に示すように、スライドする際に
そのスライド溝10内（図２乃至４参照）に浸入した土砂
等（図示せず）が逃げやすいように、対向するスライド
部材９の内側面11を外側面12より狭く形成している。Further, as shown in FIG. 7, when sliding, the inside of the slide members 9 facing each other is made so that the sand or the like (not shown) that has entered the slide groove 10 (see FIGS. 2 to 4) can easily escape. The side surface 11 is formed narrower than the outer surface 12.
【００１７】上側の定滑車13列が本体部３に下側の動滑
車14列が可動部４に設けられるとともに、相互間にワイ
ヤ等の伝動用部材15（図１及び８参照、図２乃至４には
作図上図示せず）が巻き掛けられている。上側の定滑車
13と下側の動滑車14とはそれぞれ３個づつ用いており、
これらに伝動用部材15が順次巻き掛けられている。定滑
車13と動滑車14の個数は、ワイヤの引張力の拡大度など
を勘案して適宜に設定することができる。A row of fixed pulleys 13 on the upper side is provided in the main body 3 and a row of moving pulleys 14 on the lower side is provided in the movable portion 4, and a transmission member 15 such as a wire is provided between them (see FIGS. 1 and 8, FIGS. 2 to 8). 4 is wrapped around (not shown in the drawing). Upper pulley
Three of each of the 13 and the lower movable pulley 14 are used,
The transmission member 15 is sequentially wound around these. The number of fixed pulleys 13 and the number of movable pulleys 14 can be appropriately set in consideration of the degree of expansion of the tensile force of the wire.
【００１８】上側の定滑車13の上下方向の中心線と下側
の動滑車14の上下方向の中心線とは、互い違いに交互に
ずれていくように配置せしめられている。ワイヤは先ず
下側の第１動滑車14Ａに巻き掛けられ、その後、上側の
第１定滑車13Ａ→下側の第２動滑車14Ｂ→上側の第２定
滑車13Ｂ→下側の第３動滑車14Ｃ→上側の第３定滑車13
Ｃの順に巻き掛けられ、その端部はハンマーシャベルの
本体部３に固定されている。そして、クレーンによりワ
イヤを操作し、下側の３個の動滑車14が設けられた可動
部４の上下方向の変位により掘屑把持機構１のシェル２
を開閉駆動するようにしている。The vertical center line of the upper fixed pulley 13 and the vertical center line of the lower movable pulley 14 are arranged so as to be staggered alternately. The wire is first wound around the lower first movable pulley 14A, and then the upper first fixed pulley 13A → the lower second movable pulley 14B → the upper second fixed pulley 13B → the lower third movable pulley 13A. 14C → 3rd fixed pulley 13 on the upper side
It is wound in the order of C and its end is fixed to the body 3 of the hammer shovel. Then, the wire is operated by the crane, and the shell 2 of the scrap holding mechanism 1 is moved by the vertical displacement of the movable part 4 provided with the three lower movable pulleys 14.
It is designed to open and close.
【００１９】図１及び８に示すように、上側の３個の定
滑車13の外周位置と下側の３個の動滑車14の外周位置と
は、互い違いに交互にずれていきつつ平面視して重なる
ように配置せしめている。すなわち、下側の第１動滑車
14Ａのワイヤの巻き出し位置と、上側の第１定滑車13Ａ
のワイヤの巻き掛け位置とは、上下方向から見て同じ位
置となるように設定している。また、同様に、上側の第
１定滑車13Ａのワイヤの巻き出し位置と、下側の第２動
滑車14Ｂのワイヤの巻き掛け位置とは、上下方向から見
て同じ位置となるように設定している。As shown in FIGS. 1 and 8, the outer peripheral positions of the three upper fixed pulleys 13 and the outer peripheral positions of the three lower movable pulleys 14 are alternately staggered in plan view. Are arranged so that they overlap. That is, the first movable pulley on the lower side
14A wire unwinding position and upper first fixed pulley 13A
The wire winding position is set to be the same position when viewed in the vertical direction. Similarly, the unwinding position of the wire of the first fixed pulley 13A on the upper side and the winding position of the wire of the second movable pulley 14B on the lower side are set to be the same position when viewed in the vertical direction. ing.
【００２０】さらに、下側の第２動滑車14Ｂのワイヤの
巻き出し位置と上側の第２定滑車13Ｂのワイヤの巻き掛
け位置、上側の第２定滑車13Ｂのワイヤの巻き出し位置
と下側の第３動滑車14Ｃのワイヤの巻き掛け位置、下側
の第３動滑車14Ｃのワイヤの巻き出し位置と上側の第３
定滑車13Ｃのワイヤの巻き掛け位置も同様に位置設定し
ている。したがって、上側の定滑車13と下側の定滑車13
との相互間に、伝動用部材15を円滑に巻き掛けていくこ
とができるという利点がある。Further, the wire unwinding position of the lower second movable pulley 14B, the wire winding position of the upper second constant pulley 13B, the wire unwinding position of the upper second constant pulley 13B, and the lower side. The wire winding position of the third movable pulley 14C, the wire winding position of the lower third movable pulley 14C, and the upper third
The wire winding position of the fixed pulley 13C is also set in the same manner. Therefore, the upper fixed pulley 13 and the lower fixed pulley 13
There is an advantage that the transmission member 15 can be smoothly wound between them.
【００２１】上側の２個の定滑車（13Ａ，13Ｂ）と下側
の２個の動滑車（14Ｂ，14Ｃ）とは、それぞれ本体部３
と可動部４との内周壁に沿って平面視して略円周状に順
次配置している。したがって、上側の定滑車13と下側の
動滑車14とをこの実施形態のように複数（３個づつ）配
置する場合にも、ハンマーシャベルの内周壁に沿って嵩
低く配置せしめることができるという利点がある。The upper two fixed pulleys (13A, 13B) and the lower two movable pulleys (14B, 14C) are respectively the main body 3
Along with the inner peripheral wall of the movable part 4 and the movable part 4 are sequentially arranged in a substantially circumferential shape in a plan view. Therefore, even when a plurality of upper fixed pulleys 13 and lower movable pulleys 14 (three pieces each) are arranged as in this embodiment, they can be arranged in a low volume along the inner peripheral wall of the hammer shovel. There are advantages.
【００２２】次に、この実施形態のハンマーシャベルの
使用状態を説明する。このハンマーシャベルは地上に落
下させた際、クレーン操作によって伝動用部材15（ワイ
ヤ）を引張ることにより下側の動滑車14が設けられた可
動部４を上方に変位させ、この可動部４の変位を掘屑把
持機構１のシェル２へと伝達し回動させて閉塞駆動する
ようにしている。Next, the usage state of the hammer shovel of this embodiment will be described. When the hammer shovel is dropped onto the ground, the movable member 4 provided with the lower moving pulley 14 is displaced upward by pulling the transmission member 15 (wire) by a crane operation, and the displacement of the movable portion 4 is moved. Is transmitted to the shell 2 of the excavation gripping mechanism 1 and is rotated to be closed and driven.
【００２３】可動部４が下方位置に配置しシェル２が開
放状態であるときに、土中からの湧き水の水圧により閉
塞状態とせしめようとする作用を受けた際、摩擦係合部
材６は本体部３側に係合せしめられており、本体部３に
対する可動部４の上方に向けての相対変位が制限された
状態にあるので、従来のもののようなスプリングを用い
なくてもシェル２が勝手に閉塞状態になってしまうこと
はない。よって、従来よりもその長さを短くすることが
できる。When the movable part 4 is arranged at the lower position and the shell 2 is in the open state, when the action of trying to close the shell 2 due to the water pressure of the spring water from the soil, the friction engagement member 6 is provided. Since it is engaged with the part 3 side and the relative displacement of the movable part 4 with respect to the main body part 3 toward the upper side is limited, the shell 2 can be arbitrarily operated without using a spring unlike the conventional one. It never becomes blocked. Therefore, the length can be made shorter than the conventional one.
【００２４】したがって、ハンマーシャベルにおける一
定長さを要するスプリングに対応する領域の長さをより
短く設定することができ、従来よりもハンマーシャベル
の長さを短くすることができる。よって、このハンマー
シャベルによると高速道路の下や橋の下などのように高
さ制限がある場所でも、好適に使用することができると
いう利点がある。Therefore, the length of the region of the hammer shovel corresponding to the spring that requires a certain length can be set shorter, and the length of the hammer shovel can be made shorter than in the conventional case. Therefore, according to this hammer shovel, there is an advantage that it can be preferably used even in a place where there is a height limitation such as under a highway or under a bridge.
【００２５】なお、本体部３に対し可動部４を上方に向
けて相対変位せしめると、前記摩擦係合部材６と本体部
３との係合が解除することができる。When the movable part 4 is relatively displaced upward with respect to the main body part 3, the engagement between the friction engagement member 6 and the main body part 3 can be released.
【００２６】また、ワイヤを引っ張り３個の動滑車14が
設けられた可動部４を上方へ変位せしめると、これと一
体的に変位させるようにした一対のシェル２の駆動端５
もスライド部材９に案内されて上方へ変位し、本体部３
に形成したシェル２の軸支部16を回動中心としてシェル
２が閉塞駆動せしめられ、土砂等を掴み取るようにして
いる。逆に、シェル２から土砂等を放出する際には前記
と逆のワイヤ操作を行う。Further, when the movable portion 4 provided with the three moving pulleys 14 is pulled upward by displacing the wire, the driving ends 5 of the pair of shells 2 are arranged to be displaced integrally with the movable portion 4.
Is also guided by the slide member 9 and is displaced upward, so that the main body 3
The shell 2 is driven so as to be closed around the pivotal support portion 16 of the shell 2 formed as described above, so that the earth and sand can be grabbed. On the contrary, when discharging the sand or the like from the shell 2, the wire operation opposite to the above is performed.
【００２７】ここで、可動部４が本体部３に対し上下方
向に相対変位すると、スライド部材９は回動中心に対し
てスライド溝10内を全体的に円弧状の軌跡で変位し、掘
屑把持機構１のシェル２を開閉駆動することができる。Here, when the movable portion 4 is vertically displaced relative to the main body portion 3, the slide member 9 is displaced within the slide groove 10 in a generally arcuate locus with respect to the center of rotation, and the excavated dust is generated. The shell 2 of the gripping mechanism 1 can be opened and closed.
【００２８】また、図７に示すように、対向するスライ
ド部材９の内側面11を外側面12より狭く形成しているの
で、スライドする際にそのスライド溝10内に浸入した土
砂等が逃げやすく詰まりにくいという利点がある。Further, as shown in FIG. 7, the inner surface 11 of the facing slide member 9 is formed narrower than the outer surface 12, so that the sand or the like that has entered the slide groove 10 can easily escape when sliding. It has the advantage of being less likely to become clogged.
【００２９】[0029]
【発明の効果】この発明は上述のような構成であり、次
の効果を有する。The present invention is configured as described above and has the following effects.
【００３０】スプリングを用いなくてもシェルが勝手に
閉塞状態になってしまうことはないので、従来よりもそ
の長さを短くすることができるハンマーシャベルを提供
することができる。Since the shell will not be arbitrarily closed without using a spring, it is possible to provide a hammer shovel whose length can be made shorter than before.
【図１】この発明のハンマーシャベルの実施形態の構造
を透視した側面であって、左半分は動滑車が上方に変位
した状態を、右半分は動滑車が下方に変位した状態をそ
れぞれ示す説明図。FIG. 1 is a side view seen through a structure of an embodiment of a hammer shovel of the present invention, in which a left half shows a state where a moving pulley is displaced upward, and a right half shows a state where a moving pulley is displaced downward. Fig.
【図２】図１のハンマーシャベルの構造を他の角度から
透視した側面であって、動滑車が下方に変位した状態を
示す説明図。2 is an explanatory view showing a state in which the structure of the hammer shovel of FIG. 1 is seen through from another angle, and in which the moving pulley is displaced downward. FIG.
【図３】図１のハンマーシャベルの構造を図２と同じ角
度から透視した側面であって、動滑車が上方に変位した
状態を示す説明図。3 is an explanatory view showing a state in which the structure of the hammer shovel in FIG. 1 is seen through from the same angle as in FIG. 2, and the movable pulley is displaced upward.
【図４】図１のハンマーシャベルを平面視した説明図。FIG. 4 is an explanatory view of the hammer shovel of FIG. 1 when seen in a plan view.
【図５】図１のハンマーシャベルの摩擦係合部材が本体
部側に係合せしめられている状態の拡大説明図。5 is an enlarged explanatory view of a state in which the friction engagement member of the hammer shovel of FIG. 1 is engaged with the main body side.
【図６】図１のハンマーシャベルの摩擦係合部材と本体
部側との係合が解除された状態の拡大説明図。FIG. 6 is an enlarged explanatory view of a state where the friction engagement member of the hammer shovel of FIG. 1 and the main body side are released from each other.
【図７】図１のハンマーシャベルのスライド部材を説明
する斜視図。FIG. 7 is a perspective view illustrating a slide member of the hammer shovel shown in FIG.
【図８】図１のハンマーシャベルの上側の定滑車と下側
の動滑車とを平面視した説明図。8 is an explanatory view of an upper fixed pulley and a lower moving pulley of the hammer shovel of FIG. 1 when viewed in plan.
【図９】ハンマーシャベルの使用状態を説明する側面
図。FIG. 9 is a side view illustrating a usage state of the hammer shovel.
【図１０】従来のハンマーシャベルの構造を透視した側
面であって、動滑車が下方に変位した状態を示す説明
図。FIG. 10 is an explanatory view showing a state in which a structure of a conventional hammer shovel is seen through and a movable pulley is displaced downward.
【図１１】従来のハンマーシャベルの構造を図１０と同
じ角度から透視した側面であって、動滑車が上方に変位
した状態を示す説明図。FIG. 11 is an explanatory view showing a state in which the structure of a conventional hammer shovel is seen through from the same angle as in FIG. 10, and in which the moving pulley is displaced upward.
１ 掘屑把持機構 ２ シェル ３ 本体部 ４ 可動部 ６ 摩擦係合部材 ７ 隔壁 ８ 穴部 DESCRIPTION OF SYMBOLS 1 Debris gripping mechanism 2 Shell 3 Body part 4 Movable part 6 Friction engaging member 7 Partition wall 8 Hole part
Claims (3)
る本体部と、前記本体部に対する上下方向の相対変位が
可能であり且つその変位により前記シェルを開閉駆動す
る可動部とを具備し、前記可動部には摩擦係合部材が本
体部側への係合を可能に配設され、可動部が下方位置に
配置するときにはシェルが開放状態とされ且つ前記摩擦
係合部材は本体部側に係合せしめられており、本体部に
対し可動部を上方に向けて相対変位せしめる際に前記摩
擦係合部材と本体部との係合が解除するようにしたこと
を特徴とするハンマーシャベル。1. A body part having a center of rotation of a shell of a cuttings gripping mechanism, and a movable part capable of vertical relative displacement with respect to the body part and driving the shell to open and close by the displacement. A frictional engagement member is disposed on the movable portion so as to be able to engage with the main body portion side, and when the movable portion is disposed at a lower position, the shell is in an open state and the frictional engagement member is on the main body portion side. A hammer shovel, characterized in that the frictional engagement member and the main body portion are disengaged when the movable portion is relatively displaced upward with respect to the main body portion.
うな揺動を可能として可動部に軸支されていることとし
た請求項１記載のハンマーシャベル。2. The hammer shovel according to claim 1, wherein the friction engagement member is pivotally supported by the movable portion so as to be capable of swinging so as to engage with the main body portion side.
摩擦係合部材は本体部側と係合するとともに、可動部を
本体部に対し上方に向けて相対変位せしめる際、摩擦係
合部材が前記穴部の構成辺に案内されて上方に向けて回
動することにより、本体部と摩擦係合部材との係合が解
除されることとした請求項１又は２記載のハンマーシャ
ベル。3. The friction engagement member engages with the main body side through a hole formed in the partition wall of the movable part, and when the movable part is relatively displaced upward with respect to the main body part. The hammer shovel according to claim 1 or 2, wherein engagement between the main body portion and the friction engagement member is released by being guided by the side of the hole and pivoting upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18723895A JPH0932444A (en) | 1995-07-24 | 1995-07-24 | Hammer shovel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18723895A JPH0932444A (en) | 1995-07-24 | 1995-07-24 | Hammer shovel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0932444A true JPH0932444A (en) | 1997-02-04 |
Family
ID=16202479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18723895A Pending JPH0932444A (en) | 1995-07-24 | 1995-07-24 | Hammer shovel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0932444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117152A (en) * | 2009-12-02 | 2011-06-16 | Sanwa Kiko Kk | Hammer grab |
| WO2024088229A1 (en) * | 2022-10-26 | 2024-05-02 | 武汉通途鑫路桥工程有限公司 | Non-rotating down-the-hole hammer drilling machine and use method thereof |
-
1995
- 1995-07-24 JP JP18723895A patent/JPH0932444A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117152A (en) * | 2009-12-02 | 2011-06-16 | Sanwa Kiko Kk | Hammer grab |
| WO2024088229A1 (en) * | 2022-10-26 | 2024-05-02 | 武汉通途鑫路桥工程有限公司 | Non-rotating down-the-hole hammer drilling machine and use method thereof |
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