JP2004090195A

JP2004090195A - Pin driving tool, pin driving method, pin pulling out device, and pin pulling out method

Info

Publication number: JP2004090195A
Application number: JP2002257473A
Authority: JP
Inventors: Masaki Nose; 野瀬　正樹; Shigeru Katagiri; 片桐　滋; Kazuyoshi Fujimoto; 藤本　和義
Original assignee: TOKAI HODO KK; Toho Gas Co Ltd
Current assignee: TOKAI HODO KK; Toho Gas Co Ltd
Priority date: 2002-09-03
Filing date: 2002-09-03
Publication date: 2004-03-25

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pin driving tool and a pin driving method for safely driving a pin vertically to a driving object surface in a short period of time, and to provide a pin pull out device and a pin pull out method for pulling out a pin along the axis of the pin. <P>SOLUTION: This pin driving tool 21 has a cylinder part 23 having an inside diameter larger than the diameter of the head of a fixing pin 10 and a guide part 25 provided on one end of the cylinder part 23 and kept in an erect state to the object surface 1. A pedestal presser 26 having an internal space having dimensions enough to accommodate a pedestal part 12 of the fixing pin 10 is provided in the center of the guide part 25. A handle 24 is provided on the side of the cylinder part 23. The pin driving tool 21 is put on the pedestal part 12 of the fixing pin 10 to be put in the erect state to the object surface 1, and a pin part 11 and a driving bar 22 are inserted from above the top of the cylinder part 23 to strike the upper end of the driving rod 22 with a hammer. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は，ピンを対象面に打ち込むためのピン打ち込みジグとピン打ち込み方法，および対象面に打ち込まれているピンを引き抜くためのピン引き抜き装置とピン引き抜き方法に関する。
【０００２】
【従来の技術】
一般に，ピンを打ち込む際には，ピンを片手で支え，他方の手でハンマーをピンの頭に当てる。そして，ハンマーの重みとそれを振り下ろす勢いとを利用して，ピンを対象面に打ち込んでいた。また，打ち込まれたピンを引き抜く際には，Ｌ字型等の釘抜きの一端部をピンの頭部と対象面との間に差し込み，支点を中心にして他端部に力を加えることにより，てこの原理を利用して引き抜いていた。また，重量機械や建物の移動・据え付けのためには，油圧爪付ジャッキも使用されている（例えば，（株）今野製作所製の標準型爪付ジャッキＭシリーズ等）。これは，本体の側方へ突出した爪部にも荷重をかけることができるジャッキである。そして，爪部を最下端に配置すれば，その上面は底面から２０ｍｍ程度の位置となり，対象物を低位置から上方へ直線状に持ち上げることができるものである（類似のものとして例えば，特許文献１参照）。
【０００３】
【特許文献１】
特開平１１−２０９９２５号公報（第２図）
【０００４】
【発明が解決しようとする課題】
しかしながら，前記した従来の打ち込み方法では，ピンを支えている手が傾き，あるいはふらつく等によって常にまっすぐに打ち込むことができるとは限らなかった。打ち込み途中でピンの傾きが変わることにより，打ち込み穴が大きくなってしまい，ピンが抜けやすくなる場合があった。また，ハンマーを振り下ろす方向がずれると，ピンを支えている手にハンマーが当たる場合がある等の問題点があった。
また，前記した従来のピン引き抜き方法は，釘抜きに支点を中心とした回転力を加えるものである。そのため，ピンに加えられる力は，ピンの軸方向に対し斜め方向の力となっていた。これにより，抜ける際にピンが曲がったり折れたりすることがあり，この抜いたピンを再使用するための妨げとなる場合があるという問題点があった。また，従来の爪付ジャッキは重量物を対象としており，爪部を差し込むためには２０ｍｍ程度の隙間が必要であるので，対象面に打ち込まれたピンを引き抜くためには使用できなかった。
【０００５】
本発明は，前記した従来の打ち込みジグおよびピン引き抜き装置が有する問題点を解決するためになされたものである。すなわちその課題とするところは，ピンを短時間で安全に打ち込み対象面に垂直に打ち込むことのできるピン打ち込みジグとピン打ち込み方法，およびピンの軸線に沿ってピンを引き抜くことのできるピン引き抜き装置とピン引き抜き方法を提供することにある。
【０００６】
【課題を解決するための手段】
この課題の解決を目的としてなされた本発明のピン打ち込みジグは，頭部を有するピンを対象面に打ち込むのに使用するピン打ち込みジグであって，ピンの頭部の径以上の内径を有する筒部と，筒部の一端に設けられるとともに，筒部を対象面に対して立てた状態に維持するガイド部とを有するものである。
【０００７】
すなわち本発明では，筒部の内径はピンの頭部の径以上であるので，筒部内にピン全体を挿入することができる。さらに，筒部はガイド部によって対象面に対して立てた状態に維持されるので，その内部に挿入されたピンも対象面に対して立てた状態に維持される。この状態でピンを打ち込めば，ピンは対象面に対して垂直に打ち込まれる。
【０００８】
さらに，本発明のピン打ち込みジグは，ガイド部の中央に設けられるとともに，筒部を対象面に対して立てた状態で対象面の打ち込み箇所を覆う台座押さえと，筒部の側方に設けられた取っ手とを有し，台座押さえの内部空間が，ピンとともに用いられる台座を収容するに十分なサイズを有し，筒部の内部と連通していればさらによい。
このようになっていれば，筒部を対象面に対して立てた状態で，台座押さえによって台座を保持することができるからである。台座は，ピンを打ち込む際にピンとともに対象面に固定されるものである。従って，台座が対象面の打ち込み箇所に保持されれば，ピンを打ち込むことがさらに容易となる。また，取っ手は筒部の側方に設けられているので，ピン打ち込みジグを押さえる手は筒部から離れた位置に配置される。従って，より安全にピンを打ち込むことができる。
【０００９】
さらに，本発明は，頭部を有するピンを対象面に打ち込むに当たって，ピンの頭部の径以上の内径を有する筒部と，筒部を対象面に対して立てた状態に維持するガイド部とを有するピン打ち込みジグを用い，ピン打ち込みジグを対象面に置いて筒部を対象面に対して立った状態とし（１），ピンを先端を下にしてピン打ち込みジグの筒部内に挿入し，ピンに続いて打ち込み棒をピン打ち込みジグの筒部内に挿入し，打ち込み棒の上端をハンマで叩くことによりピンを対象面に打ち込む（２）ピン打ち込み方法にも及ぶ。
【００１０】
さらに，本発明のピン打ち込み方法は，ピン打ち込みジグとして，筒部を対象面に対して立てた状態で対象面の打ち込み箇所を覆う台座押さえをガイド部の中央に有し，台座押さえの内部空間が，ピンとともに用いられる台座を収容するに十分なサイズを有するとともに筒部の内部と連通しているものを用い，（１）に先立ち対象面の打ち込み箇所に台座を載置し，（１）の際にピン打ち込みジグの台座押さえで台座を覆い，（２）の打ち込みにより，台座がピンの頭部と対象面とに挟持された状態とすればさらによい。
【００１１】
また，本発明のピン引き抜き装置は，頭部を有するとともに対象面に打ち込まれているピンを引き抜くピン引き抜き装置であって，ピンの頭部の下面と対象面との間に差し込まれるとともに先端がエッジ状である差し込み部と，差し込み部を上方へ直線状に持ち上げる持ち上げ手段と，下降した状態での差し込み部の後方に設けられてハンマの打撃を受けるとともに，他の部分をハンマの衝撃から保護する打撃部とを有するものである。
【００１２】
すなわち本発明では，差し込み部がピンの頭部の下面と対象面との間に差し込まれるので，持ち上げ手段によって，差し込み部とともにピンの頭部が上方へ直線状に持ち上げられる。従って，ピンの軸線に沿ってピンを引き抜くことができる。さらに，打撃部がハンマの打撃を受けることにより装置全体が移動されれば，容易に差し込み部をピンの頭部の下に差し込むことができる。
【００１３】
さらに，本発明は，頭部を有するとともに対象面に打ち込まれているピンを引き抜くに当たって，ピンの頭部の下面と対象面との間に差し込まれるとともに先端がエッジ状である差し込み部と，差し込み部を上方へ直線状に持ち上げる持ち上げ手段と，下降した状態での差し込み部の後方に設けられてハンマの打撃を受けるとともに，他の部分をハンマの衝撃から保護する打撃部とを有するピン引き抜き装置を用い，ピン引き抜き装置の打撃部をハンマで打つことにより，ピン引き抜き装置の差し込み部をピンの頭部の下面と対象面との間に差し込み，その状態でピン引き抜き装置の持ち上げ手段で差し込み部を持ち上げることにより対象面からピンを引き抜くピン引き抜き方法にも及ぶ。
また，ピンとともに台座が用いられている場合には，差し込み部を台座と対象面との間に差し込んで持ち上げ手段で持ち上げることにより，台座ごとピンを引き抜くことができる。
【００１４】
【発明の実施の形態】
以下，本発明を具体化した一実施の形態について，添付図面を参照して詳細に説明する。本実施の形態は，路面等の対象面に固定ピンを打ち込むためのピン打ち込みジグとそのジグによるピン打ち込み方法，および路面等に打ち込まれている固定ピンを引き抜くためのピン引き抜き装置とその装置によるピン引き抜き方法である。
【００１５】
まず，本実施の形態のピン打ち込みジグやピン引き抜き装置が使用される対象となる固定ピン１０について説明する。この固定ピン１０は，図１に示すように，例えば，路面にマット等を固定したり，路面に目印として設置されるために，対象面１に打ち込まれるものである。本発明者らが以前に提案した簡易覆工マットを路面に固定する際にも使用できる。この簡易覆工マットは，ゴム製マットの１種であり，路面に形成された掘削坑を仮復旧するために路面に固定される。固定ピン１０は，図１に示すように，ピン部１１とピン部によって対象面１に固定される樹脂製の台座部１２との組み合わせから構成されている。
【００１６】
ピン部１１は，図２に示すように，先端が鋭利な金属製の釘であり，基端部にやや大径の頭部１３（径Ｗ１，厚さＤ１）が形成されている。台座部１２は，図１と図３に示すように，中央に段付き貫通孔１４が形成されている。段部１５は，ピン部１１の頭部１３がちょうど入る径Ｗ２（＞Ｗ１）と深さＤ２（＞Ｄ１）にされている。また，台座部１２の外側面１６は，貫通孔１４の上端周辺から下へ向かって外側へ広がる緩やかな斜面をなしている。この固定ピン１０を対象面１に打ち込むには，台座部１２を対象面１上に置き，その中央部にピン部１１を打ち込む。これにより，ピン部１１の頭部１３は，図１に示すように台座部１２の段部１５内に埋没するので，台座部１２より上方へ突出することはない。
【００１７】
次に，この固定ピン１０を，対象面１に対して垂直に打ち込むためのピン打ち込みジグ２１について説明する。ピン打ち込みジグ２１は，図４に示すように，打ち込み棒２２と組み合わされて打ち込みジグ組２０として使用される。ピン打ち込みジグ２１は，図４と図５とに示すように，円筒状の筒部２３に取っ手２４とガイド部２５とが固定されて構成されている。筒部２３は，内径がその内側をピン部１１の頭部１３が通過できる大きさで，長さがピン部１１の長さの２倍程度に形成されている。取っ手２４は，筒部２３の長さ方向中程の外周に，筒部２３に対してほぼ垂直に固定されている。握りの部分には滑り止めグリップが設けられている。
【００１８】
また，ガイド部２５は，ドーム状の台座押さえ２６とその周囲に４本のリム２７で固定された安定脚２８とが，筒部２３の一端側に固定されて構成されている。台座押さえ２６は，ドーム状の内部空間に台座部１２がちょうど入る大きさであり，ピン部１１の頭部１３が通過できる径の貫通孔によって筒部２３の内部と連通されている。安定脚２８は，筒部２３のぐらつきを防止するためのリング状の金属製パイプである。台座押さえ２６と安定脚２８とのそれぞれの底面は同じ平面内にある。すなわち，ガイド部２５を下にしてピン打ち込みジグ２１を対象面１に置くと，台座押さえ２６の周囲と安定脚２８とがともに対象面１に接触し，安定した状態で立てることができる。
【００１９】
打ち込み棒２２は，その本体部分の長さが筒部２３とほぼ等しく，太さがピン部１１の頭部１３と同程度かやや小さい径の丸棒であり，先端は平らに形成されている。また，打ち込み棒２２の基端側には，筒部２３の内周より大きい径の頭部が設けられている。この打ち込み棒２２は，金属等の堅牢な材質で形成されている。
【００２０】
固定ピン１０を対象面１に設置する打ち込み手順は，次のようである。ここでは，路面２に簡易覆工マット３をかぶせ，その上から固定ピン１０を固定する場合について説明する。この場合，簡易覆工マット３の上面が対象面となる。まず，簡易覆工マット３のピン打ち込み箇所に台座部１２を置く。その上にピンガイド２１をかぶせ，筒部２３の上から先端部を下にしてピン部１１を入れる。これにより，ピン部１１は，筒部２３の内部を落下し，先端部が台座部１２の貫通孔内に入って簡易覆工マット３に当接して停止する。
【００２１】
さらに，ピンガイド２１の筒部２３に打ち込み棒２２を挿入し，打ち込み棒２２の先端部をピン部１１の頭部１３に当接させる。この状態が，図４に示した状態である。この状態で，打ち込み棒２２のうち約半分は筒部２３の内部に収まっている。そして，打ち込み棒２２の頭部をハンマで打ち込む。これにより，ハンマの打撃力が打ち込み棒２２を介してピン部１１に伝わるので，ピン部１１が簡易覆工マット３を貫通して路面２に打ち込まれる。図６に示すように，打ち込み棒２２の頭部が筒部２３の上端部に当接したときには，ピン部１１の頭部１３が台座部１２の内部に収まった状態となる。これで，ピン部１１の打ち込みを終了する。なお，台座部１２の外側面が緩やかな斜面となっているので，路面２に敷設された簡易覆工マット３を固定した場合でも，車両等の通行に大きな支障はない。
【００２２】
このピン打ち込みジグ２１によれば，打ち込まれるピン部１１は筒部２３によって路面に対して垂直に支持されている。しかも，ピン部１１に加えられる力は，打ち込み棒２２を介したものであるので，打ち込み棒２２の軸線方向の力となる。打ち込み棒２２は，ピン部１１と同様に筒部２３によって支持されているので，打ち込み棒２２の軸線方向はピン部１１の軸線方向と同一である。また，打ち込み棒２２は，打ち込みはじめには筒部２３の内部に約半分まで挿入されているので，筒部２３の内部で傾いたりぐらつくこともない。さらに，安定脚２８によって筒部２３全体のぐらつきが防止されているので，筒部２３自体が傾くこともない。従って，安定して路面に垂直に固定ピン１０を打ち込むことができる。
【００２３】
また，取っ手２４は，筒部２３より側方へ突き出た位置にあるので，取っ手２４を支える手は，ハンマが振り下ろされる位置から離れている。従って，手にハンマが当たるおそれは少ない。よって，安全であり，素早くハンマを振り下ろすことができるので，短時間で固定ピン１０を打ち込むことができる。
【００２４】
次に，対象面１に打ち込まれている固定ピン１０を，ピン部１１の軸線に沿って引き抜くためのピン引き抜き装置３０について説明する。ピン引き抜き装置３０は，図７と図８に示すように，油圧ポンプ部３１，固定台部３２，差し込み部３３，打撃部３４，ハンドル３５が設けられている。油圧ポンプ部３１は固定台部３２によって支持され，ハンドル３５の操作により差し込み部３３を上下させる。この油圧ポンプ部３１が持ち上げ手段に相当する。
【００２５】
差し込み部３３は，図中左側の先端部３３ａがエッジ状に薄く形成され，図９の平面図に示すように，中央部にＵ字型の切り欠き３３ｂが形成されている。差し込み部３３は，図７に示すように，最も下方へ位置したときにはその下面が固定台部３２の底面と同一平面内に位置する。そして，最も上方へ位置したときには，底面よりピン部１１の長さ程度の距離まで上昇する。また，打撃部３４は，金属製で，図７と図８と図１０に示すように，ハンドル３５の下部を囲むように配置され，固定台部３２の背面側に固定されている。これによって，打撃部３４をハンマで打った場合の衝撃は固定台部３２にのみ伝達されるようにされている。
【００２６】
次に，ピン引き抜き装置３０を使用して，対象面１に打ち込まれている固定ピン１０を引き抜く手順を説明する。まず，差し込み部３３を最も下方に位置しておく。その状態で，ピン引き抜き装置３０を固定ピン１０の側へ置き，差し込み部３３の切り欠き３３ｂを固定ピン１０の台座部１２の脇にあてがう。そして，打撃部３４をハンマで打ち，差し込み部３３の先端部３３ａが台座部１２の下に入り込むように固定台部３２を移動させる。このとき，ピン部１１が差し込み部３３の切り欠き３３ｂに入るようにする。差し込み部３３が台座部１２の下に入ったら，ハンドル３５を操作して油圧ポンプ部３１を駆動させる。これにより，差し込み部３３が対象面１に垂直に持ち上げられ，台座部１２ごとピン部１１を対象面１から引き抜くことができる。
【００２７】
このピン引き抜き装置３０によれば，引き抜く際の固定ピン１０に加えられる力は，ジャッキによる上方への直線状の力であり，ピン部１１の軸線方向の力である。従って，ピン部１１が曲がったり破損するおそれはない。また，差し込み部３３の先端部３３ａが薄いので，対象面１と台座部１２との間の狭い隙間にも容易に入り込ませることができる。さらに，固定台部３２に打撃部３４が固定されているので，打撃部３４をハンマで打つことによりピン引き抜き装置３０全体を移動させることができる。しかも，打撃部３４はピン引き抜き装置３０の下方に配置されているので，打撃によってピン引き抜き装置３０が倒れることはない。また，打撃によって油圧ポンプ部３１やハンドル３５を傷つけるおそれがなく，短時間で容易に移動させることができる。
【００２８】
以上詳細に説明したように，本実施の形態のピン打ち込みジグ２１は，筒部２３にピン部１１と打ち込み棒２２を挿入し，打ち込み棒２２をハンマで打ち込むので，ピン部１１は筒部２３に沿って打ち込まれる。従って，ピンを短時間で安全に打ち込み面に垂直に打ち込むことができる。また，打ち込むときにピン部１１がふらついて打ち込み穴が大きくなることがないので，ピン部１１と台座部１２は対象面１にしっかり固定される。
また，本実施の形態のピン引き抜き装置３０とによれば，差し込み部３３を台座部１２の下に差し込み，油圧ポンプ部３１によって上昇させるので，ピン部１１は，対象面１に垂直に持ち上げられる。従って，ピンの軸線に沿ってピンを引き抜くことができる。これにより，ピン部１１や台座部１２は，曲がったり破損することなく引き抜かれるので，再使用可能である。
【００２９】
なお，本実施の形態は単なる例示にすぎず，本発明を何ら限定するものではない。したがって本発明は当然に，その要旨を逸脱しない範囲内で種々の改良，変形が可能である。
例えば，ピン打ち込みジグ２１においては，取っ手２４の位置や形状は，これにこだわるものではない。また，取っ手２４のないものでもよい。さらに，リムの数や形状，安定脚の形状等も変更可能である。
また，例えば，ピン引き抜き装置３０においては，油圧ジャッキに代えて電動式のジャッキや手動ハンドルによるジャッキを使用することもできる。
【００３０】
【発明の効果】
以上の説明から明らかなように本発明によれば，ピンを短時間で安全に打ち込み対象面に垂直に打ち込むことのできるピン打ち込みジグとピン打ち込み方法，およびピンの軸線に沿ってピンを引き抜くことのできるピン引き抜き装置とピン引き抜き方法が提供されている。
【図面の簡単な説明】
【図１】固定ピンの側面図である。
【図２】固定ピンのピン部を示す断面図である。
【図３】固定ピンの台座部を示す断面図である。
【図４】本実施の形態に係る打ち込みジグ組を示す断面図である。
【図５】本実施の形態に係るピン打ち込みジグを示す斜視図である。
【図６】固定ピン打ち込みの手順を示す説明図である。
【図７】本実施の形態に係るピン引き抜き装置の側面図である。
【図８】本実施の形態に係るピン引き抜き装置の側面図である。
【図９】差し込み部の平面図である。
【図１０】本実施の形態に係るピン引き抜き装置の背面図である。
【符号の説明】
１０　固定ピン
２０　打ち込みジグ組
２１　ピン打ち込みジグ
２２　打ち込み棒
２３　筒部
２４　取っ手
２５　ガイド部
２６　台座押さえ
３０　ピン引き抜き装置
３１　油圧ポンプ部（持ち上げ手段）
３３　差し込み部
３４　打撃部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pin driving jig and a pin driving method for driving a pin into a target surface, and a pin pulling device and a pin pulling method for pulling out a pin driven into a target surface.
[0002]
[Prior art]
Generally, when driving a pin, the pin is supported with one hand and the hammer is applied to the head of the pin with the other hand. Then, using the weight of the hammer and the power to swing it down, the pin was driven into the target surface. When pulling out the driven pin, insert one end of an L-shaped nail remover between the head of the pin and the target surface, and apply force to the other end centering on the fulcrum. He pulled out using the principle of leverage. In addition, jacks with hydraulic claws are also used for moving and installing heavy machines and buildings (for example, a standard type jack M series with claws manufactured by Konno Corporation). This is a jack that can apply a load to the claw protruding to the side of the main body. If the claw portion is arranged at the lowermost end, the upper surface thereof is located at a position of about 20 mm from the bottom surface, and the object can be lifted linearly upward from a low position. 1).
[0003]
[Patent Document 1]
JP-A-11-209925 (FIG. 2)
[0004]
[Problems to be solved by the invention]
However, according to the above-described conventional driving method, the hand supporting the pin cannot always be driven straight by tilting or wobbling. When the inclination of the pin changes during the driving, the driving hole becomes large and the pin may be easily pulled out. Also, if the direction of swinging down the hammer is shifted, there is a problem that the hammer may hit the hand supporting the pin.
Further, the conventional pin pulling method described above applies a rotating force about a fulcrum to the nail pulling. For this reason, the force applied to the pin was oblique to the axial direction of the pin. As a result, there is a problem that the pin may be bent or broken when it comes off, which may hinder the reuse of the removed pin. Further, the conventional jack with a claw is intended for a heavy object, and a gap of about 20 mm is required for inserting the claw portion, so that it cannot be used to pull out a pin driven into a target surface.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the above-described conventional driving jig and pin pulling device. That is, the object is to provide a pin driving jig and a pin driving method capable of driving the pin perpendicularly to the target surface in a short time and safely, and a pin pulling device capable of pulling the pin along the axis of the pin. It is to provide a pin pull-out method.
[0006]
[Means for Solving the Problems]
A pin driving jig of the present invention made for the purpose of solving this problem is a pin driving jig used for driving a pin having a head onto a target surface, wherein the cylinder has an inner diameter larger than the diameter of the pin head. And a guide portion provided at one end of the tubular portion and maintaining the tubular portion upright with respect to the target surface.
[0007]
That is, in the present invention, since the inner diameter of the cylindrical portion is equal to or larger than the diameter of the head of the pin, the entire pin can be inserted into the cylindrical portion. Further, since the cylindrical portion is maintained upright with respect to the target surface by the guide portion, the pin inserted therein is also maintained upright with respect to the target surface. If the pin is driven in this state, the pin is driven perpendicular to the target surface.
[0008]
Further, the pin driving jig of the present invention is provided at the center of the guide portion, and is provided on a pedestal retainer for covering a driving portion of the target surface in a state where the cylindrical portion is set up with respect to the target surface, and at a side of the cylindrical portion. It is more preferable that the inner space of the pedestal retainer has a size sufficient to accommodate the pedestal used together with the pin and communicates with the inside of the cylindrical portion.
With such a configuration, it is possible to hold the pedestal by the pedestal holding while the tubular portion stands up against the target surface. The pedestal is fixed to the target surface together with the pin when the pin is driven. Accordingly, if the pedestal is held at the location where the target surface is to be driven, it becomes easier to drive the pin. Further, since the handle is provided on the side of the cylinder, the hand for holding down the pin driving jig is arranged at a position away from the cylinder. Therefore, the pin can be driven more safely.
[0009]
Further, the present invention provides, when driving a pin having a head into a target surface, a cylindrical portion having an inner diameter equal to or larger than the diameter of the pin head, and a guide portion for maintaining the cylindrical portion in an upright state with respect to the target surface. With the pin driving jig having the above, the pin driving jig is placed on the target surface and the cylinder is set up with respect to the target surface (1), and the pin is inserted into the cylinder of the pin driving jig with the tip down, Following the pin, a driving rod is inserted into the cylindrical portion of the pin driving jig, and the pin is driven into the target surface by hitting the upper end of the driving rod with a hammer.
[0010]
Further, in the pin driving method of the present invention, as a pin driving jig, a pedestal retainer that covers a location to be driven on the target surface in a state where the cylindrical portion is set up with respect to the target surface is provided at the center of the guide portion. However, a pedestal having a size sufficient to accommodate the pedestal used together with the pin and communicating with the inside of the cylindrical portion is used. In this case, it is more preferable that the pedestal is covered with the pedestal press of the pin driving jig, and the pedestal is held between the head of the pin and the target surface by the driving of (2).
[0011]
The pin pulling device of the present invention is a pin pulling device having a head and pulling out a pin driven into a target surface. The pin pulling device is inserted between the lower surface of the pin head and the target surface and has a tip. Edge-shaped insertion part, lifting means for lifting the insertion part linearly upward, and provided behind the insertion part in a lowered state to receive the impact of the hammer and protect the other parts from the impact of the hammer And a striking portion.
[0012]
That is, in the present invention, since the insertion portion is inserted between the lower surface of the head of the pin and the target surface, the head of the pin is linearly lifted upward together with the insertion portion by the lifting means. Therefore, the pin can be pulled out along the axis of the pin. Further, if the entire device is moved by the hammer hitting the hitting portion, the insertion portion can be easily inserted under the head of the pin.
[0013]
Further, in the present invention, in pulling out a pin having a head and being driven into a target surface, the insertion portion is inserted between the lower surface of the head of the pin and the target surface and has an edge-shaped tip. A pin pulling device having a lifting means for linearly lifting the portion upward and a hitting portion provided behind the insertion portion in a lowered state to receive a hammer and protect the other portion from the impact of the hammer. By hitting the hitting portion of the pin pull-out device with a hammer, the insertion portion of the pin pull-out device is inserted between the lower surface of the pin head and the target surface, and in this state, the insertion portion is lifted by the lifting means of the pin pull-out device. The method extends to a pin withdrawing method of pulling out a pin from a target surface by lifting the pin.
When the pedestal is used together with the pin, the pin can be pulled out together with the pedestal by inserting the insertion portion between the pedestal and the target surface and lifting the pedestal with the lifting means.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. This embodiment relates to a pin driving jig for driving a fixing pin into a target surface such as a road surface, a method of driving the pin by the jig, a pin pulling device for pulling out the fixing pin driven to a road surface or the like, and a device therefor. This is a pin pull-out method.
[0015]
First, the fixing pin 10 to which the pin driving jig and the pin pull-out device of the present embodiment are used will be described. As shown in FIG. 1, the fixing pin 10 is driven into the target surface 1 to fix a mat or the like on a road surface or to be installed as a mark on the road surface. The present invention can also be used for fixing a simple lining mat previously proposed to a road surface. This simple lining mat is a kind of rubber mat, and is fixed to the road surface to temporarily recover the excavation pit formed on the road surface. As shown in FIG. 1, the fixing pin 10 is composed of a combination of a pin 11 and a resin base 12 fixed to the target surface 1 by the pin.
[0016]
As shown in FIG. 2, the pin portion 11 is a metal nail having a sharp tip, and a head portion 13 (diameter W1, thickness D1) having a slightly larger diameter is formed at a base end portion. As shown in FIGS. 1 and 3, the pedestal portion 12 has a stepped through hole 14 formed in the center. The step portion 15 has a diameter W2 (> W1) and a depth D2 (> D1) where the head 13 of the pin portion 11 just fits. Further, the outer surface 16 of the pedestal portion 12 has a gentle slope that extends outward from the periphery of the upper end of the through hole 14 downward. In order to drive the fixing pin 10 into the target surface 1, the pedestal portion 12 is placed on the target surface 1, and the pin portion 11 is driven into the center thereof. As a result, the head 13 of the pin 11 is buried in the step 15 of the pedestal 12 as shown in FIG.
[0017]
Next, a pin driving jig 21 for driving the fixing pin 10 perpendicularly to the target surface 1 will be described. The pin driving jig 21 is used as a driving jig set 20 in combination with a driving rod 22 as shown in FIG. As shown in FIGS. 4 and 5, the pin driving jig 21 is configured by fixing a handle 24 and a guide portion 25 to a cylindrical tube portion 23. The cylindrical portion 23 has an inner diameter that is large enough to allow the head portion 13 of the pin portion 11 to pass through the inside, and is formed to have a length that is about twice the length of the pin portion 11. The handle 24 is fixed substantially vertically to the outer periphery of the cylindrical portion 23 in the middle in the length direction. The grip is provided with a non-slip grip.
[0018]
Further, the guide portion 25 is configured such that a dome-shaped pedestal retainer 26 and a stable leg 28 fixed around the dome-shaped pedestal retainer by four rims 27 are fixed to one end side of the cylindrical portion 23. The pedestal retainer 26 has a size such that the pedestal portion 12 just enters the dome-shaped internal space, and is communicated with the inside of the cylindrical portion 23 through a through hole having a diameter through which the head portion 13 of the pin portion 11 can pass. The stabilizer leg 28 is a ring-shaped metal pipe for preventing the cylindrical portion 23 from wobbling. The bottom surfaces of the pedestal retainer 26 and the stabilizer leg 28 are in the same plane. In other words, when the pin driving jig 21 is placed on the target surface 1 with the guide portion 25 down, the periphery of the pedestal retainer 26 and the stabilizing legs 28 both contact the target surface 1 and can be stably stood.
[0019]
The driving rod 22 is a round rod having a body portion length substantially equal to the cylindrical portion 23, a thickness similar to or slightly smaller than the head portion 13 of the pin portion 11, and a tip formed flat. . Further, a head having a diameter larger than the inner circumference of the cylindrical portion 23 is provided on the base end side of the driving rod 22. The driving rod 22 is formed of a robust material such as a metal.
[0020]
The driving procedure for installing the fixing pin 10 on the target surface 1 is as follows. Here, a case where the simple lining mat 3 is covered on the road surface 2 and the fixing pins 10 are fixed from above will be described. In this case, the upper surface of the simple lining mat 3 is the target surface. First, the pedestal portion 12 is placed on the simple lining mat 3 where the pins are to be driven. The pin guide 21 is put on the top, and the pin portion 11 is inserted from the top of the cylindrical portion 23 with the tip end down. As a result, the pin portion 11 falls inside the cylindrical portion 23, and the tip portion enters the through hole of the pedestal portion 12 and contacts the simple lining mat 3 to stop.
[0021]
Further, the driving rod 22 is inserted into the cylindrical portion 23 of the pin guide 21, and the tip of the driving rod 22 is brought into contact with the head 13 of the pin portion 11. This state is the state shown in FIG. In this state, about half of the driving rod 22 is housed inside the cylindrical portion 23. Then, the head of the driving rod 22 is driven with a hammer. As a result, the impact force of the hammer is transmitted to the pin portion 11 via the driving rod 22, and the pin portion 11 penetrates the simple lining mat 3 and is driven into the road surface 2. As shown in FIG. 6, when the head of the driving rod 22 comes into contact with the upper end of the cylindrical part 23, the head 13 of the pin part 11 is set in the pedestal part 12. Thus, the driving of the pin portion 11 is completed. In addition, since the outer surface of the pedestal portion 12 is a gentle slope, even if the simple lining mat 3 laid on the road surface 2 is fixed, there is no major obstacle to traffic of vehicles and the like.
[0022]
According to the pin driving jig 21, the pin portion 11 to be driven is supported by the cylindrical portion 23 vertically to the road surface. Moreover, since the force applied to the pin portion 11 is via the driving rod 22, the force is the force in the axial direction of the driving rod 22. Since the driving rod 22 is supported by the cylindrical part 23 similarly to the pin part 11, the axial direction of the driving rod 22 is the same as the axial direction of the pin part 11. Further, since the driving rod 22 is inserted about half of the inside of the cylindrical portion 23 at the beginning of the driving, the driving rod 22 does not tilt or wobble inside the cylindrical portion 23. Further, the wobble of the entire cylindrical portion 23 is prevented by the stabilizer leg 28, so that the cylindrical portion 23 itself does not tilt. Therefore, the fixing pin 10 can be stably driven vertically to the road surface.
[0023]
Further, since the handle 24 is located at a position protruding sideward from the cylindrical portion 23, the hand supporting the handle 24 is separated from the position where the hammer is swung down. Therefore, the possibility that the hammer hits the hand is small. Therefore, the hammer is safe and the hammer can be quickly swung down, so that the fixing pin 10 can be driven in a short time.
[0024]
Next, a pin pull-out device 30 for pulling out the fixing pin 10 driven into the target surface 1 along the axis of the pin portion 11 will be described. As shown in FIGS. 7 and 8, the pin extracting device 30 includes a hydraulic pump unit 31, a fixed base unit 32, an insertion unit 33, a hitting unit 34, and a handle 35. The hydraulic pump section 31 is supported by a fixed base section 32, and the insertion section 33 is moved up and down by operating a handle 35. The hydraulic pump section 31 corresponds to a lifting means.
[0025]
The insertion portion 33 has a left end portion 33a formed thin in an edge shape in the figure, and a U-shaped notch 33b formed in the center as shown in the plan view of FIG. As shown in FIG. 7, when the insertion portion 33 is located at the lowest position, its lower surface is located in the same plane as the bottom surface of the fixed base portion 32. When it is located at the uppermost position, it rises from the bottom surface to a distance about the length of the pin portion 11. The hitting portion 34 is made of metal, and is arranged so as to surround the lower portion of the handle 35 as shown in FIGS. 7, 8 and 10, and is fixed to the rear side of the fixed base portion 32. Thus, the impact when the hammer hits the hitting portion 34 is transmitted only to the fixed base portion 32.
[0026]
Next, a procedure for pulling out the fixing pins 10 driven into the target surface 1 using the pin pulling-out device 30 will be described. First, the insertion portion 33 is located at the lowest position. In this state, the pin extracting device 30 is placed on the side of the fixing pin 10, and the notch 33 b of the insertion portion 33 is applied to the side of the pedestal portion 12 of the fixing pin 10. Then, the hitting portion 34 is hit with a hammer, and the fixed base portion 32 is moved so that the tip portion 33a of the insertion portion 33 enters under the pedestal portion 12. At this time, the pin portion 11 is inserted into the notch 33b of the insertion portion 33. When the insertion portion 33 enters under the pedestal portion 12, the handle 35 is operated to drive the hydraulic pump portion 31. As a result, the insertion portion 33 is lifted perpendicular to the target surface 1, and the pin portion 11 together with the pedestal portion 12 can be pulled out from the target surface 1.
[0027]
According to the pin extracting device 30, the force applied to the fixing pin 10 at the time of extraction is a straight upward force by the jack, and is an axial force of the pin portion 11. Therefore, there is no possibility that the pin portion 11 is bent or damaged. Further, since the distal end portion 33a of the insertion portion 33 is thin, it can easily enter a narrow gap between the target surface 1 and the pedestal portion 12. Further, since the hitting portion 34 is fixed to the fixed base portion 32, the entire pin pulling-out device 30 can be moved by hitting the hitting portion 34 with a hammer. Moreover, since the hitting portion 34 is disposed below the pin pulling device 30, the pin pulling device 30 does not fall down due to the hit. In addition, there is no risk of damaging the hydraulic pump unit 31 and the handle 35 by the impact, and the unit can be easily moved in a short time.
[0028]
As described in detail above, the pin driving jig 21 of the present embodiment inserts the pin portion 11 and the driving rod 22 into the cylindrical portion 23 and drives the driving rod 22 with a hammer. It is driven along. Therefore, the pin can be safely and vertically driven into the driving surface in a short time. In addition, the pin portion 11 and the pedestal portion 12 are firmly fixed to the target surface 1 because the pin portion 11 does not fluctuate and the driving hole does not become large.
Further, according to the pin extracting device 30 of the present embodiment, the insertion portion 33 is inserted below the pedestal portion 12 and is raised by the hydraulic pump portion 31, so that the pin portion 11 is lifted perpendicular to the target surface 1. . Therefore, the pin can be pulled out along the axis of the pin. As a result, the pin portion 11 and the pedestal portion 12 are pulled out without bending or breakage, and can be reused.
[0029]
Note that the present embodiment is merely an example, and does not limit the present invention in any way. Therefore, naturally, the present invention can be variously modified and modified without departing from the gist thereof.
For example, in the pin driving jig 21, the position and the shape of the handle 24 are not limited to this. Moreover, the one without the handle 24 may be used. Further, the number and shape of the rim, the shape of the stable leg, and the like can be changed.
Further, for example, in the pin extracting device 30, an electric jack or a jack with a manual handle can be used instead of the hydraulic jack.
[0030]
【The invention's effect】
As apparent from the above description, according to the present invention, a pin driving jig and a pin driving method capable of driving a pin perpendicularly to a target surface in a short time and safely, and a method of pulling out a pin along the axis of the pin. A pin pulling device and a pin pulling method are provided.
[Brief description of the drawings]
FIG. 1 is a side view of a fixing pin.
FIG. 2 is a sectional view showing a pin portion of a fixing pin.
FIG. 3 is a sectional view showing a pedestal portion of a fixing pin.
FIG. 4 is a cross-sectional view showing a driving jig set according to the present embodiment.
FIG. 5 is a perspective view showing a pin driving jig according to the present embodiment.
FIG. 6 is an explanatory diagram showing a procedure for driving a fixed pin.
FIG. 7 is a side view of the pin extracting device according to the embodiment.
FIG. 8 is a side view of the pin extracting device according to the embodiment.
FIG. 9 is a plan view of the insertion portion.
FIG. 10 is a rear view of the pin extracting device according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Fixing pin 20 Driving jig set 21 Pin driving jig 22 Driving rod 23 Cylindrical part 24 Handle 25 Guide part 26 Base holder 30 Pin pull-out device 31 Hydraulic pump part (lifting means)
33 insertion part 34 hitting part

Claims

In a pin driving jig used to drive a pin having a head into a target surface,
A cylindrical portion having an inner diameter greater than the diameter of the pin head;
A pin driving jig, comprising: a guide portion provided at one end of the cylindrical portion and maintaining the cylindrical portion in an upright state with respect to a target surface.

The pin driving jig according to claim 1,
A pedestal retainer that is provided at the center of the guide portion and covers a driving position of the target surface with the cylindrical portion standing against the target surface;
A handle provided on a side of the cylindrical portion,
The inner space of the pedestal holder is
It is large enough to accommodate the pedestal used with the pin,
A pin driving jig communicating with the inside of said cylindrical part.

In a pin driving method for driving a pin having a head into a target surface,
A pin driving jig having a cylindrical portion having an inner diameter equal to or larger than the diameter of the head of the pin and a guide portion for maintaining the cylindrical portion in an upright state with respect to the target surface,
The pin driving jig is placed on the target surface and the cylinder is set up with respect to the target surface (1).
Insert the pin into the cylinder of the jig with the pin tip down,
Following the pin, insert the driving rod into the cylinder of the pin driving jig,
A pin driving method characterized in that a pin is driven into a target surface by hitting an upper end of a driving rod with a hammer (2).

The pin driving method according to claim 3,
As a pin driving jig, a pedestal holder that covers the point where the target surface is to be driven is placed in the center of the guide part with the cylinder part standing up against the target surface. The one that has enough size and communicates with the inside of the cylinder
Prior to the above (1), the pedestal is placed at the place where the target surface is driven,
In the case of the above (1), cover the pedestal with the pedestal holder of the pin driving jig,
The pin driving method according to (2), wherein the pedestal is held between the head of the pin and the target surface by the driving in (2).

In a pin pulling device that pulls out a pin having a head and being driven into a target surface,
An insertion portion inserted between the lower surface of the pin head and the target surface and having an edge-shaped tip;
Lifting means for linearly lifting the insertion portion upward;
A pin pulling device provided with a hitting portion provided behind the insertion portion in a lowered state to receive a hit of a hammer and protect another portion from the impact of the hammer.

In a pin pulling method for pulling out a pin having a head and being driven into a target surface,
An insertion portion which is inserted between the lower surface of the pin head and the target surface and has an edge-shaped tip, lifting means for lifting the insertion portion linearly upward, and provided behind the insertion portion in a lowered state Using a pin pull-out device that has a hammer that is hit by a hammer and protects other parts from the impact of the hammer, the hitting portion of the pin pull-out device is hit with a hammer so that the insertion portion of the pin pull-out device is inserted. Insert between the lower surface of the pin head and the target surface,
In this state, the pin is pulled out from the target surface by lifting the insertion portion with the lifting means of the pin pulling device.