JP2004322238A

JP2004322238A - Rail drilling machine

Info

Publication number: JP2004322238A
Application number: JP2003117477A
Authority: JP
Inventors: Katsuhei Omi; 勝平大見
Original assignee: Omi Kogyo Co Ltd
Current assignee: Omi Kogyo Co Ltd
Priority date: 2003-04-22
Filing date: 2003-04-22
Publication date: 2004-11-18
Anticipated expiration: 2023-04-22
Also published as: JP4192025B2

Abstract

<P>PROBLEM TO BE SOLVED: To surely sandwich a rail between a fixed clamp 17 and a movable clamp 19 in a rail clamping mechanism of a rail drilling machine. <P>SOLUTION: The rail clamping mechanism 4 is oppositely arranged to a cutter support mechanism for arranging the rotational center line 12a in the horizontal direction X, and has: a fixed frame 16; the fixed clamp 17; a clamping lever 18 rotatably supported by the fixed frame 1 16; the movable clamp 19; an auxiliary clamp 20 arranged on the clamping lever 18; and a screw operation mechanism 34 for approaching and separating the movable clamp 19 and the auxiliary clamp 20 to the fixed clamp 17 by rotating the clamping lever 18 by the relative movement of a feed screw part (a male screw part 36, and a female screw part 38) caused by operation of a handle 39. A hole is drilled in the rail 30 by a cutter 15, in a clamp state P of clamping the rail 30 arranged in a rail clamping part 21, by being brought into pressure contact in the clamp direction X along the rotational center line 12a between the fixed clamp 17 and the movable clamp 19. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明はレール穿孔機において穿孔時にレールを位置決めするレール挟持機構の改良に関するものである。
【０００２】
【従来の技術】
下記特許文献１に示すレール挟持機構においては、固定クランプに対し可動クランプを開閉させる手動操作リンク機構として、トグルクランプ式のものが開示されている。
【０００３】
【特許文献１】
特開２００１−２３２５０６号公報
【０００４】
【発明が解決しようとする課題】
しかし、トグルクランプ式の手動操作リンク機構は、穿孔時にカッターがレールに圧接される力が大きくなると、固定クランプに対する可動クランプの締付力不足が生じ易いため、穿孔に支障を来たすおそれがあった。
【０００５】
この発明は、レール穿孔機のレール挟持機構において固定クランプと可動クランプとの間でレールを確実に挟持することを目的としている。
【０００６】
【課題を解決するための手段及び発明の効果】
後記実施形態の図面（図１〜５及び図８に示す第１実施形態、図６〜７に示す第２実施形態）の符号を援用して本発明を説明する。
【０００７】
請求項１の発明にかかるレール穿孔機は、第１，２実施形態に対応し、下記のように構成されている。
このレール穿孔機は、駆動源（１）と、この駆動源（１）を載置する支持台（２）と、この駆動源（１）の出力伝達機構（１０）に連動して回転するカッター着脱部（１２）を有するカッター支持機構（３）と、穿孔時にレール（３０）を位置決めするレール挟持機構（４）とを備えている。
【０００８】
前記カッター支持機構（３）はカッター着脱部（１２）の回転中心線（１２ａ）を横方向（Ｘ）にして配置されている。このカッター支持機構（３）のカッター着脱部（１２）の口部（１４ａ）に面して配設された前記レール挟持機構（４）は、支持台（２）に取着した固定フレーム（１６）と、この固定フレーム（１６）に設けた固定クランプ（１７）と、この固定フレーム（１６）に対し回動支持部（２３）で回動可能に支持した挟持レバー（１８）と、この挟持レバー（１８）に設けた可動クランプ（１９）と、この固定クランプ（１７）と可動クランプ（１９）との間に設けたレール挟持部（２１）とを備えている。
【０００９】
特に、このレール挟持機構（４）はねじ操作機構（３４）を備えている。このねじ操作機構（３４）においては、ハンドル（３９，４７）の操作に伴う送りねじ部（３６，３８，４４，４６）の相対移動により挟持レバー（１８）を固定フレーム（１６）に対し回動させて固定クランプ（１７）に対し可動クランプ（１９）を接近及び離間させる。
【００１０】
このレール穿孔機においては、レール挟持部（２１）に設置したレール（３０）の台部（３１）及び頭部（３３）を固定クランプ（１７）と可動クランプ（１９）との間でカッター着脱部（１２）の回転中心線（１２ａ）に沿ったクランプ方向（Ｘ）へ圧接して挟持したクランプ状態（Ｐ）で、カッター着脱部（１２）に装着したカッター（１５）によりこのレール（３０）の支柱部（３２）に穿孔する。
【００１１】
請求項２の発明は、第１実施形態に対応し、請求項１の発明を前提として下記のように構成されている。
前記ねじ操作機構（３４）においては、前記固定フレーム（１６）に支持した連結部（４０）に対し前記送りねじ部としての雄ねじ部（３６）を有する支軸（３５）を取着し、この支軸（３５）の雄ねじ部（３６）が螺合される前記送りねじ部としての雌ねじ部（３８）を有する操作筒（３７）を、前記挟持レバー（１８）に支持した連結部（４１）に対しこの支軸（３５）の軸心（３５ａ）を中心に回動し得るように挿嵌し、この操作筒（３７）を挟持レバー（１８）の連結部（４１）に対しハンドル（３９）により回動させることにより、この操作筒（３７）の雌ねじ部（３８）がこの支軸（３５）の雄ねじ部（３６）に対しその軸心（３５ａ）の方向へ移動し、この雌ねじ部（３８）の移動に伴いこの操作筒（３７）が挟持レバー（１８）の連結部（４１）とともに移動して挟持レバー（１８）が固定フレーム（１６）に対し回動する。
【００１２】
請求項３の発明は、第２実施形態に対応し、請求項１の発明を前提として下記のように構成されている。
前記ねじ操作機構（３４）においては、前記固定フレーム（１６）に支持した連結部（４５）に前記送りねじ部としての雌ねじ部（４６）を設け、前記挟持レバー（１８）に支持した連結部（４８）に対し操作軸（４３）をその軸心（４３ａ）を中心に回動し得るように挿通するとともに、この操作軸（４３）に設けた前記送りねじ部としての雄ねじ部（４４）をこの雌ねじ部（４６）に螺合し、この操作軸（４３）を挟持レバー（１８）の連結部（４８）に対しハンドル（４７）により回動させることにより、固定フレーム（１６）の連結部（４５）の雌ねじ部（４６）に対し操作軸（４３）の雄ねじ部（４４）が回動してその軸心（４３ａ）の方向へ移動し、この雄ねじ部（４４）の移動に伴いこの操作軸（４３）が挟持レバー（１８）の連結部（４８）とともに移動して挟持レバー（１８）が固定フレーム（１６）に対し回動する。
【００１３】
請求項１〜３の発明では、固定クランプ（１７）に対する可動クランプ（１９）の締め付け機構として前記ねじ操作機構（３４）を採用したので、穿孔時にカッター（１５）がレール（３０）に圧接される力が大きくなっても、固定クランプ（１７）に対する可動クランプ（１９）の締付力を維持して、固定クランプ（１７）と可動クランプ（１９）との間でレール（３０）を確実に挟持することができる。
【００１４】
請求項４の発明は、第１，２実施形態に対応し、請求項１または請求項２または請求項３の発明を前提として下記のように構成されている。
前記可動クランプ（１９）は、前記挟持レバー（１８）に対し、着脱可能に支持されているとともに、前記クランプ状態（Ｐ）で前記クランプ方向（Ｘ）に対し直交する方向（Ｚ）へ移動調節可能に支持されている。
【００１５】
請求項４の発明では、レール（３０）の形状や大きさの変化に合わせて可動クランプ（１９）を交換したり移動調節したりすることにより、固定クランプ（１７）と可動クランプ（１９）との間でレール（３０）を確実に挟持することができる。
【００１６】
請求項５の発明は、第１，２実施形態に対応し、請求項４の発明を前提として下記のように構成されている。
前記挟持レバー（１８）にはその回動に伴い固定クランプ（１７）に対し接近及び離間して前記クランプ状態（Ｐ）でレール（３０）の支柱部（３２）を圧接し得る補助クランプ（２０）を取り付けている。この補助クランプ（２０）は前記クランプ状態（Ｐ）で挟持レバー（１８）に対し前記クランプ方向（Ｘ）に沿って移動調節可能に支持されている。
【００１７】
請求項５の発明では、この補助クランプ（２０）と固定クランプ（１７）との間でレール（３０）を仮締めした状態で可動クランプ（１９）を交換したり移動調節したりする作業を容易に行うことができる。
【００１８】
【発明の実施の形態】
〔第１実施形態〕
まず、本発明の第１実施形態にかかるレール穿孔機について図１〜５及び図８を参照して説明する。
【００１９】
＜レール穿孔機の概要＞
図１，２に示すレール穿孔機は、ガソリンエンジンである駆動源１と、この駆動源１を載置する支持台２と、この駆動源１に連動するカッター支持機構３と、穿孔時にレール３０を位置決めするレール挟持機構４とを備えている。
【００２０】
前記支持台２は、前記駆動源１を載置する可動台６を移動可能に支持する左右両案内棒５ａ，５ｂを有する前後両脚付き載置台５と、この載置台５に組み込まれた可動支持機構７とを備えている。この可動台６の移動方向に沿う水平方向を前後方向Ｘ（横方向）とし、この前後方向Ｘに対し直交する水平方向を左右方向Ｙとし、これらの方向Ｘ，Ｙに対し直交する鉛直方向を上下方向Ｚとする。前記可動支持機構７は、前記可動台６と、この可動台６の左右両側に挿嵌された左右両案内棒５ａ，５ｂのほかに、前記載置台５の後側に取着された操作機構８を備えている。
【００２１】
前記駆動源１（ガソリンエンジン）は、エンジン本体９のほかに、このエンジン本体９の回転を前記カッター支持機構３に伝達する出力伝達機構１０を備えている。
【００２２】
前記カッター支持機構３は、前記支持台２において載置台５の前側下方に配置され、カバー１１で前記出力伝達機構１０のカバー１０ａに取着されている。図５に示すように、このカッター支持機構３のカバー１１内にはカッター着脱部１２が前後両軸受１３で回転可能に支持されている。このカッター着脱部１２は前記出力伝達機構１０と連動している。このカッター着脱部１２の回転中心線１２ａは前後方向Ｘへ延びる。このカッター着脱部１２内で回転中心線１２ａの周りにはカッター挿脱孔１４が形成され、その口部１４ａが前方を向いている。ホールカッターやドリルなどの穿孔カッター１５は、このカッター着脱部１２のカッター挿脱孔１４に対し口部１４ａで着脱される。
【００２３】
前記操作機構８により、前記支持台２の可動台６が前記駆動源１やこのカッター支持機構３などとともに左右両案内棒５ａ，５ｂに沿って前後方向Ｘへ往復移動する。
【００２４】
＜図３〜５に示す前記レール挟持機構４の詳細＞
このレール挟持機構４は、前記カッター支持機構３のカッター着脱部１２の口部１４ａに面して配設され、左右両固定フレーム１６と左右両固定クランプ１７と左右両挟持レバー１８と左右両可動クランプ１９と左右両補助クランプ２０とレール挟持部２１とを備えている。
【００２５】
前記左右両固定フレーム１６は互いに連結されて前記支持台２の載置台５に取着されている。前記左右両固定クランプ１７は、この左右両固定フレーム１６に対し締結部材２２（ボルト及びナット）により着脱可能に取り付けられて交換し得るとともに前後方向Ｘ及び上下方向Ｚへ若干寸法だけ移動調節し得る。
【００２６】
前記左右両挟持レバー１８は、前記左右両固定フレーム１６に対し回動支持部２３で回動可能に支持されてこの左右両回動支持部２３から下方へ延設され、下端部で連結体２４により互いに連結されている。前記左右両可動クランプ１９の上下両側には長孔２５が上下方向Ｚへ延設されている。この左右両可動クランプ１９が前記連結体２４の左右両端部２４ａに当てがわれた状態で左右両可動クランプ１９に止め体２６が当てがわれ、この左右両止め体２６の上下両側に挿通された締結部材２７（ボルト）が左右両可動クランプ１９の上下両長孔２５を通して連結体２４の左右両端部２４ａに螺合されている。そのため、この左右両可動クランプ１９は前記左右両挟持レバー１８に対し着脱されて交換し得るとともに長孔２５の範囲で前後方向Ｘ及び上下方向Ｚへ移動調節し得る。
【００２７】
前記左右両補助クランプ２０においては、前記左右両挟持レバー１８と左右両可動クランプ１９との間で前記連結体２４に締結部材２８（ボルト）が螺合され、この締結部材２８の先端部に押圧体２９がこの締結部材２８の軸心２８ａを中心に回動可能に支持されている。そのため、この左右両押圧体２９は左右両挟持レバー１８の連結体２４に対し締結部材２８の軸心２８ａの方向へ移動調節し得る。
【００２８】
前記レール挟持部２１は前記左右両固定クランプ１７と左右両可動クランプ１９及び左右両補助クランプ２０との間で左右方向Ｙへ延びるように設けられ、このレール挟持部２１にはレール３０が設置される。このレール３０は、台部３１と、この台部３１から上方へ延びる支柱部３２と、この支柱部３２の上端部に設けられた頭部３３とからなる。
【００２９】
さらに、レール挟持機構４は前記左右両固定フレーム１６と左右両挟持レバー１８との間で取り付けられたねじ操作機構３４を備えている。このねじ操作機構３４は、送りねじ部としての雄ねじ部３６を有する支軸３５と、送りねじ部としての雌ねじ部３８を有する操作筒３７と、ハンドル３９とを備えている。前記左右両固定フレーム１６間には連結軸４０（連結部）が軸心４０ａを中心に回動可能に支持され、前記支軸３５がこの連結軸４０に挿着されてその軸心４０ａを中心にこの連結軸４０とともに回動し得る。前記左右両挟持レバー１８間には左右両回動支持部２３の若干下側で連結軸４１（連結部）が軸心４１ａを中心に回動可能に支持され、前記操作筒３７がこの連結軸４１に挿嵌されてその軸心４１ａを中心にこの連結軸４１とともに回動し得る。前記支軸３５の雄ねじ部３６はこの操作筒３７の雌ねじ部３８に螺合されている。前記ハンドル３９はこの操作筒３７に連結されている。このハンドル３９を回動させると、操作筒３７が連結軸４１に対し支軸３５の軸心３５ａを中心に回動し、支軸３５の雄ねじ部３６に対し操作筒３７の雌ねじ部３８が相対回動してこの操作筒３７がハンドル３９及び連結軸４１とともに支軸３５に対しその軸心３５ａの方向へ移動する。この操作筒３７の移動に伴い、左右両挟持レバー１８が左右両固定フレーム１６に対し回動支持部２３の軸心２３ａを中心にハンドル３９及び連結軸４１とともに回動する。この左右両挟持レバー１８の回動により、前記左右両可動クランプ１９及び左右両補助クランプ２０も回動支持部２３の軸心２３ａを中心に回動して前記左右両固定クランプ１７に対し接近及び離間する。
【００３０】
＜上記レール穿孔機の使用例＞
図８の想像線で概略的に示す既存のレール緊張器４２（治具）は、冬季のレール交換時に夏季との温度差を配慮してレール３０に緊張力を与えるものであり、レール３０の延設方向に対し直交する方向の両側で緊張ロッド４２ａが配置される。
【００３１】
このようにしてセットされたレール３０に対し枕木との連結孔を穿つ場合、まず、図４に示すように、前記レール挟持機構４でハンドル３９により左右両挟持レバー１８を回動させて非クランプ状態Ｑにし、左右両可動クランプ１９と左右両固定クランプ１７との間のレール挟持部２１にレール３０を挿入する。次に、図３に示すように、ハンドル３９により左右両挟持レバー１８を回動させてクランプ状態Ｐにし、左右両可動クランプ１９と左右両固定クランプ１７との間でレール３０の台部３１及び頭部３３を挟持する。そのクランプ状態Ｐでは、レール３０が左右両可動クランプ１９及び左右両固定クランプ１７によりカッター着脱部１２の回転中心線１２ａに沿ったクランプ方向（前後方向Ｘ）へ圧接され、レール穿孔機がこのレール３０に対し位置決めされる。その場合、通常は、左右両補助クランプ２０をレール３０の支柱部３２に対し若干離間させる。その後、前記操作機構８により、前記カッター支持機構３が前記支持台２の可動台６や前記駆動源１などとともに前後方向Ｘへ往復移動すると、このカッター支持機構３の穿孔カッター１５がレール３０の支柱部３２に穿孔する。このクランプ状態Ｐのまま左右両補助クランプ２０と左右両固定クランプ１７との間でレール３０を仮締めした状態で、可動クランプ１９を交換したり移動調節したりする。
【００３２】
〔第２実施形態〕
次に、本発明の第２実施形態にかかるレール穿孔機について第１実施形態との相違点を中心に図６〜７を参照して説明する。
【００３３】
この第２実施形態では第１実施形態のねじ操作機構３４を変更している。第２実施形態のねじ操作機構３４は、送りねじ部としての雄ねじ部４４を有する操作軸４３と、送りねじ部としての雌ねじ部４６を有する連結筒４５（連結部）と、ハンドル４７とを備えている。前記左右両固定フレーム１６間には前記連結筒４５が軸心４５ａを中心に回動可能に支持されている。前記左右両挟持レバー１８間には左右両回動支持部２３の若干下側で連結軸４８（連結部）が軸心４８ａを中心に回動可能に支持され、前記操作軸４３がその軸心４３ａを中心にこの連結軸４８に対し回動可能に挿嵌されてその軸心４８ａを中心にこの連結軸４８とともに回動し得る。前記操作軸４３の雄ねじ部４４は前記連結筒４５の雌ねじ部４６に螺合されている。前記ハンドル４７はこの操作軸４３に連結されている。このハンドル４７を回動させると、操作軸４３がその軸心４３ａを中心に連結軸４８に対し回動し、連結筒４５の雌ねじ部４６に対し操作軸４３の雄ねじ部４４が相対回動してこの操作軸４３がハンドル４７及び連結軸４８とともに連結筒４５に対し操作軸４３の軸心４３ａの方向へ移動する。この操作軸４３の移動に伴い、左右両挟持レバー１８が左右両固定フレーム１６に対し回動支持部２３の軸心２３ａを中心にハンドル４７及び連結軸４８とともに回動する。この左右両挟持レバー１８の回動により、前記左右両可動クランプ１９及び左右両補助クランプ２０も回動支持部２３の軸心２３ａを中心に回動して前記左右両固定クランプ１７に対し接近及び離間する。
【図面の簡単な説明】
【図１】第１実施形態に係るレール穿孔機を示す正面図である。
【図２】第１実施形態に係るレール穿孔機を示す平面図である。
【図３】第１実施形態に係るレール穿孔機のレール挟持機構においてレールのクランプ状態を示す一部破断正面図である。
【図４】図３でレールの非クランプ状態を示す一部破断正面図である。
【図５】第１実施形態に係るレール穿孔機のレール挟持機構においてレールのクランプ状態を示す部分横断面図である。
【図６】第２実施形態に係るレール穿孔機のレール挟持機構においてレールのクランプ状態を示す一部破断正面図である。
【図７】図６でレールの非クランプ状態を示す一部破断正面図である。
【図８】第１実施形態に係るレール穿孔機の使用例を示す平面図である。
【符号の説明】
１…駆動源、２…支持台、３…カッター支持機構、４…レール挟持機構、１２…カッター着脱部、１２ａ…回転中心線、１４ａ…口部、１５…穿孔カッター、１６…固定フレーム、１７…固定クランプ、１８…挟持レバー、１９…可動クランプ、２０…補助クランプ、２１…レール挟持部、２３…回動支持部、３０…レール、３１…台部、３２…支柱部、３３…頭部、３４…ねじ操作機構、３５…支軸、３５ａ…軸心、３６…雄ねじ部（送りねじ部）、３７…操作筒、３８…雌ねじ部（送りねじ部）、３９…ハンドル、４０…連結軸（連結部）、４１…連結軸（連結部）、４３…操作軸、４３ａ…軸心、４４…雄ねじ部（送りねじ部）、４５…連結筒（連結部）、４６…雌ねじ部（送りねじ部）、４７…ハンドル、４８…連結軸（連結部）、Ｐ…クランプ状態、Ｘ…前後方向（横方向、クランプ方向）、Ｚ…上下方向。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a rail clamping mechanism for positioning a rail during drilling in a rail drilling machine.
[0002]
[Prior art]
In a rail clamping mechanism disclosed in Patent Literature 1 below, a toggle clamp type is disclosed as a manually operated link mechanism that opens and closes a movable clamp with respect to a fixed clamp.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2001-232506
[Problems to be solved by the invention]
However, with the toggle clamp type manually operated link mechanism, if the force with which the cutter is pressed against the rail at the time of drilling increases, the clamping force of the movable clamp with respect to the fixed clamp tends to be insufficient, which may hinder drilling. .
[0005]
An object of the present invention is to securely clamp a rail between a fixed clamp and a movable clamp in a rail clamping mechanism of a rail punch.
[0006]
Means for Solving the Problems and Effects of the Invention
The present invention will be described with reference to the reference numerals of the drawings of the following embodiments (the first embodiment shown in FIGS. 1 to 5 and FIG. 8, and the second embodiment shown in FIGS. 6 to 7).
[0007]
The rail drill according to the invention of claim 1 corresponds to the first and second embodiments, and is configured as follows.
The rail drilling machine includes a driving source (1), a support (2) on which the driving source (1) is mounted, and a cutter that rotates in conjunction with an output transmission mechanism (10) of the driving source (1). A cutter support mechanism (3) having an attaching / detaching portion (12) and a rail holding mechanism (4) for positioning the rail (30) at the time of drilling are provided.
[0008]
The cutter support mechanism (3) is arranged with the rotation center line (12a) of the cutter attaching / detaching portion (12) in the horizontal direction (X). The rail holding mechanism (4) disposed facing the mouth (14a) of the cutter attaching / detaching portion (12) of the cutter supporting mechanism (3) includes a fixed frame (16) attached to the support base (2). ), A fixed clamp (17) provided on the fixed frame (16), a holding lever (18) rotatably supported on the fixed frame (16) by a rotation support portion (23), and a holding lever (18). A movable clamp (19) provided on the lever (18), and a rail holding portion (21) provided between the fixed clamp (17) and the movable clamp (19) are provided.
[0009]
In particular, the rail holding mechanism (4) includes a screw operating mechanism (34). In the screw operation mechanism (34), the gripping lever (18) is turned with respect to the fixed frame (16) by the relative movement of the feed screw portions (36, 38, 44, 46) accompanying the operation of the handles (39, 47). To move the movable clamp (19) toward and away from the fixed clamp (17).
[0010]
In this rail drilling machine, a base (31) and a head (33) of a rail (30) installed on a rail holding portion (21) are attached and detached by a cutter between a fixed clamp (17) and a movable clamp (19). In the clamp state (P) which is pressed and clamped in the clamping direction (X) along the rotation center line (12a) of the portion (12), the rail (30) is attached by the cutter (15) attached to the cutter attaching / detaching portion (12). ).
[0011]
The invention of claim 2 corresponds to the first embodiment, and is configured as follows on the premise of the invention of claim 1.
In the screw operating mechanism (34), a support shaft (35) having a male screw portion (36) as the feed screw portion is attached to a connecting portion (40) supported by the fixed frame (16). A connecting portion (41) that supports an operating cylinder (37) having a female screw portion (38) as the feed screw portion to which the male screw portion (36) of the support shaft (35) is screwed with the holding lever (18). Is inserted so as to be rotatable about the axis (35a) of the support shaft (35), and the operating cylinder (37) is connected to the connecting portion (41) of the holding lever (18) by the handle (39). ), The female screw part (38) of the operating cylinder (37) moves toward the axis (35a) of the male screw part (36) of the support shaft (35), and the female screw part With the movement of (38), the operation cylinder (37) is moved by the holding lever (1). ) Sandwiched lever moves with connecting portions (41) (18) rotates relative to the fixed frame (16) of.
[0012]
The invention of claim 3 corresponds to the second embodiment, and is configured as follows on the premise of the invention of claim 1.
In the screw operation mechanism (34), a female screw (46) as the feed screw is provided on the connecting part (45) supported on the fixed frame (16), and the connecting part supported on the holding lever (18). The operation shaft (43) is inserted through the operation shaft (43) so as to be rotatable around its axis (43a), and the male screw portion (44) as the feed screw portion provided on the operation shaft (43). Is screwed into the female screw portion (46), and the operating shaft (43) is rotated by the handle (47) with respect to the connecting portion (48) of the holding lever (18) to connect the fixed frame (16). The male screw part (44) of the operating shaft (43) rotates with respect to the female screw part (46) of the part (45) and moves in the direction of its axis (43a), and with the movement of this male screw part (44). The operation shaft (43) is used to hold the holding lever (18). Clamping lever moves with connecting portions (48) (18) rotates relative to the fixed frame (16).
[0013]
According to the first to third aspects of the present invention, since the screw operating mechanism (34) is employed as a mechanism for fastening the movable clamp (19) to the fixed clamp (17), the cutter (15) is pressed against the rail (30) during drilling. The clamping force of the movable clamp (19) with respect to the fixed clamp (17) is maintained even when the force of the movable clamp (17) increases, and the rail (30) is securely connected between the fixed clamp (17) and the movable clamp (19). Can be pinched.
[0014]
The invention of claim 4 corresponds to the first and second embodiments, and is configured as described below on the premise of the invention of claim 1, claim 2, or claim 3.
The movable clamp (19) is detachably supported by the holding lever (18), and adjusts movement in a direction (Z) orthogonal to the clamp direction (X) in the clamped state (P). Supported as possible.
[0015]
According to the fourth aspect of the present invention, the fixed clamp (17) and the movable clamp (19) can be changed by changing or adjusting the movable clamp (19) according to the change in the shape and size of the rail (30). The rail (30) can be securely clamped between them.
[0016]
The invention of claim 5 corresponds to the first and second embodiments, and is configured as follows on the premise of the invention of claim 4.
An auxiliary clamp (20) is provided on the holding lever (18) so as to approach and separate from the fixed clamp (17) with its rotation to press the column (32) of the rail (30) in the clamped state (P). ) Is attached. The auxiliary clamp (20) is supported in the clamp state (P) so as to be adjustable in movement along the clamp direction (X) with respect to the holding lever (18).
[0017]
According to the fifth aspect of the present invention, it is easy to replace or adjust the movable clamp (19) with the rail (30) temporarily tightened between the auxiliary clamp (20) and the fixed clamp (17). Can be done.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
[First Embodiment]
First, a rail punch according to a first embodiment of the present invention will be described with reference to FIGS.
[0019]
<Outline of rail drilling machine>
The rail drilling machine shown in FIGS. 1 and 2 includes a drive source 1 which is a gasoline engine, a support base 2 on which the drive source 1 is mounted, a cutter support mechanism 3 interlocked with the drive source 1, and a rail 30 for drilling. And a rail clamping mechanism 4 for positioning the position.
[0020]
The support table 2 includes a front and rear double-sided mounting table 5 having left and right guide bars 5a and 5b for movably supporting a movable table 6 on which the driving source 1 is mounted, and a movable support incorporated in the mounting table 5. And a mechanism 7. A horizontal direction along the moving direction of the movable base 6 is referred to as a front-rear direction X (lateral direction), a horizontal direction perpendicular to the front-rear direction X is referred to as a left-right direction Y, and a vertical direction perpendicular to these directions X, Y is referred to as a vertical direction. The vertical direction is Z. The movable support mechanism 7 includes, in addition to the movable base 6 and the left and right guide rods 5a and 5b inserted on the left and right sides of the movable base 6, an operation mechanism attached to the rear side of the mounting table 5. 8 is provided.
[0021]
The drive source 1 (gasoline engine) includes, in addition to the engine body 9, an output transmission mechanism 10 that transmits rotation of the engine body 9 to the cutter support mechanism 3.
[0022]
The cutter support mechanism 3 is arranged below the mounting table 5 in the support table 2 and is attached to a cover 10 a of the output transmission mechanism 10 with a cover 11. As shown in FIG. 5, a cutter attaching / detaching portion 12 is rotatably supported by front and rear bearings 13 in a cover 11 of the cutter supporting mechanism 3. The cutter attachment / detachment unit 12 is linked with the output transmission mechanism 10. The rotation center line 12a of the cutter attaching / detaching portion 12 extends in the front-rear direction X. A cutter insertion / removal hole 14 is formed in the cutter attachment / detachment portion 12 around the rotation center line 12a, and the opening 14a faces forward. A hole cutter 15 such as a hole cutter or a drill is attached to and detached from a cutter insertion / removal hole 14 of the cutter attachment / detachment portion 12 at an opening 14a.
[0023]
The movable platform 6 of the support platform 2 reciprocates in the front-rear direction X along the left and right guide rods 5a and 5b together with the drive source 1 and the cutter support mechanism 3 by the operation mechanism 8.
[0024]
<Details of the rail clamping mechanism 4 shown in FIGS. 3 to 5>
The rail holding mechanism 4 is disposed facing the mouth 14a of the cutter attaching / detaching portion 12 of the cutter supporting mechanism 3, and has both left and right fixed frames 16, left and right fixed clamps 17, left and right holding levers 18, and both left and right movable. The vehicle includes a clamp 19, left and right auxiliary clamps 20, and a rail holding portion 21.
[0025]
The left and right fixed frames 16 are connected to each other and attached to the mounting table 5 of the support table 2. The right and left fixed clamps 17 are detachably attached to the left and right fixed frames 16 by fastening members 22 (bolts and nuts) and can be exchanged, and can be moved and adjusted only slightly in the front-rear direction X and the vertical direction Z. .
[0026]
The left and right holding levers 18 are rotatably supported by the rotation support portions 23 with respect to the left and right fixed frames 16 and extend downward from the left and right rotation support portions 23. Are connected to each other. On both upper and lower sides of the left and right movable clamps 19, elongated holes 25 extend in the vertical direction Z. The stoppers 26 are applied to the left and right movable clamps 19 in a state where the left and right movable clamps 19 are applied to the left and right ends 24 a of the connecting body 24, and are inserted into the upper and lower sides of the left and right stoppers 26. Fastening members 27 (bolts) are screwed into left and right ends 24 a of the coupling body 24 through upper and lower slots 25 of both left and right movable clamps 19. Therefore, the left and right movable clamps 19 can be attached to and detached from the left and right holding levers 18 to be exchangeable, and can be moved and adjusted in the front-rear direction X and the vertical direction Z within the range of the elongated hole 25.
[0027]
In the left and right auxiliary clamps 20, a fastening member 28 (bolt) is screwed to the connecting body 24 between the left and right holding levers 18 and the left and right movable clamps 19, and the distal end of the fastening member 28 is pressed. A body 29 is supported so as to be rotatable about an axis 28 a of the fastening member 28. Therefore, the left and right pressing bodies 29 can be moved and adjusted in the direction of the axis 28 a of the fastening member 28 with respect to the connecting body 24 of the left and right holding levers 18.
[0028]
The rail holding portion 21 is provided so as to extend in the left-right direction Y between the left and right fixed clamps 17, the left and right movable clamps 19, and the left and right auxiliary clamps 20, and a rail 30 is installed on the rail holding portion 21. You. The rail 30 includes a base 31, a support 32 extending upward from the support 31, and a head 33 provided at an upper end of the support 32.
[0029]
Further, the rail holding mechanism 4 includes a screw operating mechanism 34 attached between the left and right fixed frames 16 and the left and right holding levers 18. The screw operation mechanism 34 includes a support shaft 35 having a male screw portion 36 as a feed screw portion, an operation tube 37 having a female screw portion 38 as a feed screw portion, and a handle 39. A connection shaft 40 (connection portion) is supported between the left and right fixed frames 16 so as to be rotatable about an axis 40a, and the support shaft 35 is inserted into the connection shaft 40 so that the center of the axis 40a is centered. Can rotate together with the connecting shaft 40. A connection shaft 41 (connection portion) is supported between the left and right holding levers 18 slightly below the left and right rotation support portions 23 so as to be rotatable about an axis 41a, and the operation cylinder 37 is connected to the connection shaft. 41 and can rotate together with the connecting shaft 41 about its axis 41a. The male screw portion 36 of the support shaft 35 is screwed to the female screw portion 38 of the operation cylinder 37. The handle 39 is connected to the operation tube 37. When the handle 39 is rotated, the operation cylinder 37 rotates about the axis 35 a of the support shaft 35 with respect to the connection shaft 41, and the female screw portion 38 of the operation tube 37 is relatively positioned with respect to the male screw portion 36 of the support shaft 35. By rotating, the operation cylinder 37 moves together with the handle 39 and the connection shaft 41 with respect to the support shaft 35 in the direction of its axis 35a. With the movement of the operation cylinder 37, the left and right holding levers 18 rotate with the handle 39 and the connection shaft 41 about the axis 23a of the rotation support portion 23 with respect to the left and right fixed frames 16. By the rotation of the left and right holding levers 18, the left and right movable clamps 19 and the left and right auxiliary clamps 20 also rotate about the axis 23a of the rotation support portion 23 to approach and close the left and right fixed clamps 17. Separate.
[0030]
<Example of use of the above rail drilling machine>
An existing rail tensioner 42 (jig) schematically shown by an imaginary line in FIG. 8 applies tension to the rail 30 in consideration of a temperature difference from summer when replacing the rail in winter. The tension rods 42a are arranged on both sides in a direction perpendicular to the extending direction.
[0031]
When drilling a connection hole with a sleeper on the rail 30 set in this way, first, as shown in FIG. In the state Q, the rail 30 is inserted into the rail holding portion 21 between the left and right movable clamps 19 and the left and right fixed clamps 17. Next, as shown in FIG. 3, the left and right holding levers 18 are turned by the handle 39 to the clamp state P, and the base 31 of the rail 30 and the right and left fixed clamps 17 Hold the head 33. In the clamped state P, the rail 30 is pressed by the left and right movable clamps 19 and the left and right fixed clamps 17 in the clamp direction (the front-rear direction X) along the rotation center line 12a of the cutter attaching / detaching portion 12, and the rail drilling machine is used. Positioned with respect to 30. In this case, the left and right auxiliary clamps 20 are usually slightly separated from the support 32 of the rail 30. Thereafter, when the cutter support mechanism 3 reciprocates in the front-rear direction X together with the movable base 6 of the support base 2 and the drive source 1 by the operation mechanism 8, the perforating cutter 15 of the cutter support mechanism 3 A hole is drilled in the support portion 32. In this clamp state P, the movable clamp 19 is replaced or moved and adjusted while the rail 30 is temporarily fastened between the left and right auxiliary clamps 20 and the left and right fixed clamps 17.
[0032]
[Second embodiment]
Next, a rail punch according to a second embodiment of the present invention will be described with reference to FIGS.
[0033]
In the second embodiment, the screw operation mechanism 34 of the first embodiment is changed. The screw operation mechanism 34 according to the second embodiment includes an operation shaft 43 having a male screw portion 44 as a feed screw portion, a connection tube 45 (connection portion) having a female screw portion 46 as a feed screw portion, and a handle 47. ing. The connection cylinder 45 is supported between the left and right fixed frames 16 so as to be rotatable about an axis 45a. A connection shaft 48 (connection portion) is supported between the left and right holding levers 18 slightly below the left and right rotation support portions 23 so as to be rotatable about an axis 48a. It is rotatably inserted into the connecting shaft 48 around the center 43a, and can rotate together with the connecting shaft 48 about the axis 48a. The male screw part 44 of the operation shaft 43 is screwed to the female screw part 46 of the connection cylinder 45. The handle 47 is connected to the operation shaft 43. When the handle 47 is rotated, the operation shaft 43 rotates about the axis 43 a with respect to the connection shaft 48, and the male screw portion 44 of the operation shaft 43 relatively rotates with respect to the female screw portion 46 of the connection cylinder 45. The lever operating shaft 43 moves together with the handle 47 and the connecting shaft 48 relative to the connecting cylinder 45 in the direction of the axis 43 a of the operating shaft 43. With the movement of the operation shaft 43, the left and right holding levers 18 rotate with the handle 47 and the connection shaft 48 about the axis 23 a of the rotation support portion 23 with respect to the left and right fixed frames 16. By the rotation of the left and right holding levers 18, the left and right movable clamps 19 and the left and right auxiliary clamps 20 also rotate about the axis 23a of the rotation support portion 23 to approach and close the left and right fixed clamps 17. Separate.
[Brief description of the drawings]
FIG. 1 is a front view showing a rail boring machine according to a first embodiment.
FIG. 2 is a plan view showing the rail boring machine according to the first embodiment.
FIG. 3 is a partially cutaway front view showing a clamped state of the rail in the rail holding mechanism of the rail punch according to the first embodiment.
FIG. 4 is a partially cutaway front view showing the unclamped state of the rail in FIG. 3;
FIG. 5 is a partial cross-sectional view showing a clamped state of the rail in the rail holding mechanism of the rail punch according to the first embodiment.
FIG. 6 is a partially broken front view showing a clamped state of a rail in a rail holding mechanism of a rail punch according to a second embodiment.
FIG. 7 is a partially broken front view showing the unclamped state of the rail in FIG. 6;
FIG. 8 is a plan view showing an example of use of the rail drilling machine according to the first embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Drive source, 2 ... Support base, 3 ... Cutter support mechanism, 4 ... Rail clamping mechanism, 12 ... Cutter attaching / detaching part, 12a ... Rotation center line, 14a ... Mouth, 15 ... Perforated cutter, 16 ... Fixed frame, 17 ... fixed clamp, 18 ... clamping lever, 19 ... movable clamp, 20 ... auxiliary clamp, 21 ... rail clamping part, 23 ... rotation support part, 30 ... rail, 31 ... base part, 32 ... support part, 33 ... head , 34: screw operating mechanism, 35: support shaft, 35a: shaft center, 36: male screw portion (feed screw portion), 37: operating cylinder, 38: female screw portion (feed screw portion), 39: handle, 40: connecting shaft (Connecting portion), 41 ... connecting shaft (connecting portion), 43 ... operating shaft, 43a ... shaft center, 44 ... male screw portion (feed screw portion), 45 ... connecting tube (connecting portion), 46 ... female screw portion (feed screw) Part), 47 ... handle, 48 ... connecting shaft (connecting part), ... clamped state, X ... front-rear direction (lateral direction, the clamping direction), Z ... vertically.

Claims

A drive source, a support base on which the drive source is mounted, a cutter support mechanism having a cutter attachment / detachment section that rotates in conjunction with an output transmission mechanism of the drive source, and a rail holding mechanism for positioning the rail during drilling. Rail drilling machine
The cutter supporting mechanism is arranged with the rotation center line of the cutter attaching / detaching portion in a horizontal direction, and the rail holding mechanism disposed facing the mouth of the cutter attaching / detaching portion of the cutter supporting mechanism is attached to a support base. Fixed frame, a fixed clamp provided on the fixed frame, a holding lever rotatably supported on the fixed frame by a rotation supporting portion, a movable clamp provided on the holding lever, and the fixed clamp and movable A screw operating mechanism for rotating the holding lever relative to the fixed frame by moving the holding clamp relative to the fixed frame by relative movement of the rail holding portion provided between the clamp and the feed screw portion in accordance with the operation of the handle, and moving the movable clamp toward and away from the fixed clamp. And the base and head of the rail installed on the rail holding part are positioned between the fixed clamp and the movable clamp at the rotation center line of the cutter attaching / detaching part. In clamped state which sandwiches pressed against the clamping direction Tsu, rail drilling machine, characterized in that the perforated strut of the rail by a cutter mounted on the cutter mounting part.

In the screw operation mechanism, a spindle having a male screw portion as the feed screw portion is attached to a connection portion supported by the fixed frame, and the male screw portion of the spindle is screwed into the feed screw portion. An operating cylinder having a female screw portion is inserted into a connecting portion supported by the holding lever so as to be rotatable around the axis of the support shaft, and the operating tube is connected to the connecting portion of the holding lever by a handle. The female thread of the operating cylinder moves in the axial direction of the spindle with respect to the male thread of the spindle, and the operating cylinder moves with the connecting part of the clamping lever with the movement of the female thread. The rail drilling machine according to claim 1, wherein the pinching lever moves to rotate with respect to the fixed frame.

In the screw operation mechanism, a female screw portion as the feed screw portion is provided at the connection portion supported by the fixed frame, and the operation shaft is turned around the axis of the operation shaft with respect to the connection portion supported by the holding lever. While being inserted so as to be movable, a male screw portion as the feed screw portion provided on the operation shaft is screwed into the female screw portion, and the operation shaft is rotated by a handle with respect to a coupling portion of the holding lever. The male screw part of the operating shaft rotates with respect to the female screw part of the connecting part of the fixed frame and moves in the axial direction of the operating shaft. With the movement of the male screw part, the operating shaft moves together with the connecting part of the clamping lever. 2. The rail drilling machine according to claim 1, wherein the holding lever rotates with respect to the fixed frame.

The said movable clamp is supported so that attachment and detachment is possible with respect to the said holding lever, and is movable and adjustable in the direction orthogonal to the said clamp direction in the said clamped state, or characterized by the above-mentioned. The rail drilling machine according to claim 2 or 3.

The clamping lever is provided with an auxiliary clamp which approaches and separates from the fixed clamp with the rotation thereof and which can press the support of the rail in the clamped state in the clamped state. The rail drilling machine according to claim 4, wherein the rail drilling machine is supported so as to be movable along a direction.