JP2020148052A

JP2020148052A - Undercutter adapter and track bed excavator

Info

Publication number: JP2020148052A
Application number: JP2019047850A
Authority: JP
Inventors: 誠二細川; Seiji Hosokawa
Original assignee: Hosen Kiki Seibi KK
Current assignee: Hosen Kiki Seibi KK
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2020-09-17
Anticipated expiration: 2039-03-15
Also published as: JP7186439B2

Abstract

To facilitate non-block ballast cleaner construction work to easily excavate crushed stone without closing railroad tracks and allowing trains to pass during crushed stone excavation.SOLUTION: An adaptor 1 of an undercutter for attaching an undercutter 2, used to excavate a roadbed under a sleeper, to an attachment connection bolt 3b1 of a work vehicle 3 having a telescopic mechanism 3b in which a piston 3b2 has telescopic motion from a cylinder 3b3 and in which the base end side of the cylinder 3b3 is rotatably supported, includes: an undercutter connection part to which the undercutter 2 is connected; a connection part on the telescopic mechanism side where the attachment connection bolt 3b1 is rotatably connected; and a work vehicle side connection part rotatably connected to the work vehicle 3 under the base end of the cylinder 3b3.SELECTED DRAWING: Figure 4

Description

本発明は、シリンダからピストンが伸縮すると共に、シリンダの基端側が回動可能に支持された伸縮機構部を有する作業車の前記ピストン先端に、マクラギ下の道床を掘削するアンダーカッターを装着するためのアンダーカッター用アダプタ、およびアンダーカッター用アダプタを介してブルドーザー等の作業車にアンダーカッターを装着して構築した道床堀削機に関する。 In the present invention, the piston expands and contracts from the cylinder, and an undercutter for excavating the trackbed under the sleepers is attached to the tip of the piston of a work vehicle having an expansion / contraction mechanism portion in which the base end side of the cylinder is rotatably supported. It relates to the undercutter adapter and the roadbed excavator constructed by attaching the undercutter to a work vehicle such as a bulldozer via the undercutter adapter.

従来より、道床交換や盤下げ作業等を行う鉄道軌道補修装置の一つとして、例えば、車両の進行方向に直交して同車両の側面に取付けられた円弧状のガイドレールと、ガイドレールに沿って上方の待機位置と下方の作業位置の間を昇降可能な取付架台と、取付架台に同取付架台に対する取付角度を調節可能に連結された連結板と、連結板の先端部に装着された道床掘削装置と、連結板の後端部に装着された吸引装置とを備え、マクラギ下の道床内に掘削装置を挿入してバラスト（砕石）を掻き出し、掻き出したバラスト（砕石）を吸引装置で吸込み車両内に搬入するように構成した道床交換機が提案されている（例えば、特許文献１参照。）。 Conventionally, as one of the railroad track repair devices for exchanging trackbeds and lowering boards, for example, an arc-shaped guide rail mounted on the side surface of the vehicle perpendicular to the traveling direction of the vehicle and along the guide rail. A mounting base that can be raised and lowered between the upper standby position and the lower working position, a connecting plate that is connected to the mounting base so that the mounting angle with respect to the mounting base can be adjusted, and a trackbed mounted at the tip of the connecting plate. Equipped with an excavator and a suction device attached to the rear end of the connecting plate, the excavator is inserted into the trackbed under the sleepers to scrape out ballast (crushed stone), and the scraped ballast (crushed stone) is sucked in by the suction device. A track bed changer configured to be carried into a vehicle has been proposed (see, for example, Patent Document 1).

特開平６−３３４０２号公報Japanese Unexamined Patent Publication No. 6-333402

ところで、通常、線路下の砕石を掘削作業する際は夜間に線路閉鎖を行い、列車等が通れない状態にして行うのが一般的であるが、例えば、夜間も頻繁に貨物列車が通る等で線路閉鎖が困難な場所が存在する。そこで、線路を無閉鎖、すなわち砕石掘削作業時も列車が通れる状態で砕石掘削する工事を無閉鎖バラクリ施工と呼んでいる。 By the way, when excavating crushed stone under a railroad track, it is common to close the railroad track at night so that trains and the like cannot pass through. For example, freight trains frequently pass through at night. There are places where it is difficult to close the track. Therefore, the work of excavating crushed stone without closing the track, that is, the work of excavating crushed stone in a state where the train can pass even during the crushed stone excavation work, is called non-closed disassembly construction.

無閉鎖バラクリ施工時は、列車通過に支障のない機材を線路（マクラギ）下にセットし、列車が通過しない時のみ作業員が機材を動かし少しずつ動床の掘削を行い、すき取られた箇所にはパッキンなどを組んで高さを調整し、列車を通過させ（列車通過に合せるので、場合により数分作業したらすぐに退避。）ることを繰り返しながら行う。 At the time of non-closed disassembly construction, equipment that does not interfere with train passage is set under the railroad track (sleepers), and only when the train does not pass, workers move the equipment and excavate the moving floor little by little, and the excavated part The height of the train is adjusted by assembling packing, etc., and the train is passed through (it is adjusted to the train passage, so in some cases, it is evacuated immediately after working for a few minutes).

しかし、上述の特許文献１に記載の道床交換機は、そもそもレールを走行しながら道床の砕石を交換するため、無閉鎖バラクリ施工は実行できない、という問題がある。 However, the roadbed exchange described in Patent Document 1 described above has a problem that non-closed disassembly construction cannot be performed because the crushed stones of the roadbed are exchanged while traveling on the rail.

そこで、本発明はこのような問題点に着目してなされたもので、線路を閉鎖せずに砕石掘削作業時も列車が通れる状態で砕石を容易に掘削する無閉鎖バラクリ施工を容易に実行することができるアンダーカッター用アダプタ、およびこのアンダーカッター用アダプタを介し作業車にアンダーカッターを装着して構築した道床堀削機を提供することを目的とする。 Therefore, the present invention has been made by paying attention to such a problem, and it is easy to carry out a non-closed crushing construction in which crushed stone is easily excavated in a state where a train can pass even during crushed stone excavation work without closing the railroad track. It is an object of the present invention to provide an adapter for an undercutter that can be used, and a trackbed excavator constructed by attaching an undercutter to a work vehicle via the adapter for the undercutter.

前記課題を解決するため、本発明に係るアンダーカッター用アダプタは、シリンダからピストンが伸縮すると共に、シリンダの基端側が回動可能に支持された伸縮機構部を有する作業車の前記ピストン先端に、マクラギ下の道床を掘削するアンダーカッターを装着するためのアンダーカッター用アダプタであって、前記アンダーカッターが連結されるアンダーカッター連結部と、前記伸縮機構部のピストン先端部に回動可能に連結される伸縮機構部側連結部と、前記作業車に回動可能に連結される作業車側連結部とを有することを特徴とする。
また、本発明に係るアンダーカッター用アダプタでは、前記アンダーカッター連結部は、前記アンダーカッターを回動可能に支持するカッター回動支持部と、前記カッター回動支持部を中心に回動する前記アンダーカッターの回動角を所定の角度内に規制すると共に、その所定の角度内で前記アンダーカッターの回動角を固定するカッター回動角規制部とを有し、前記アンダーカッターを前記カッター回動角規制部が規制した所定の角度内で回動して固定することも特徴とする。
また、本発明に係るアンダーカッター用アダプタは、上面側には前記伸縮機構部側連結部が設けられる一方、下面側には前記アンダーカッター連結部が設けられたアンダーカッター連結用平面部と、前記アンダーカッター連結直線部とは高さが異なり、上面側に前記作業車側連結部が設けられた作業車連結用平面部と、前記アンダーカッター連結用平面部と前記作業車連結用平面部とを連結する平面部同士連結部とを有し、前記アンダーカッター連結用平面部は、前記アンダーカッターの短手方向の幅以上の長さであって、当該アンダーカッター用アダプタに対し前記カッター回動角規制部が規制する所定の角度内で前記アンダーカッターが回動しても、前記アンダーカッターが前記作業車連結用平面部および前記平面部同士連結部に干渉しないような長さであることも特徴とする。
また、本発明に係るのアンダーカッター用アダプタでは、前記アンダーカッターの上面側には、当該アンダーカッターの長手方向に前記アンダーカッター連結部が連結されるアンダーカッター取付架台が所定間隔で複数設けられており、その所定間隔は、前記作業車の前方の左右両側に設けた伸縮機構部回動支持部またはアタッチメント回動支持部同士の間隔と同じであることも特徴とする。
また、本発明に係る道床堀削機は、上述のいずれかのアンダーカッター用アダプタが前記アンダーカッターの長手方向の一方側に設けられており、その一方側の前記アンダーカッター用アダプタに作業車が連結されていることを特徴とする。
また、本発明に係る道床堀削機は、上述のいずれかのアンダーカッター用アダプタが前記アンダーカッターの長手方向の両側に設けられており、両側の前記アンダーカッター用アダプタそれぞれに作業車が連結されていることを特徴とする。 In order to solve the above problems, in the undercutter adapter according to the present invention, the piston expands and contracts from the cylinder, and the base end side of the cylinder is rotatably supported at the tip of the piston of the work vehicle. An undercutter adapter for mounting an undercutter for excavating the trackbed under the sleepers, which is rotatably connected to the undercutter connecting portion to which the undercutter is connected and the piston tip portion of the telescopic mechanism portion. It is characterized by having a telescopic mechanism side connecting portion and a working vehicle side connecting portion rotatably connected to the work vehicle.
Further, in the undercutter adapter according to the present invention, the undercutter connecting portion includes a cutter rotation support portion that rotatably supports the undercutter and the undercutter that rotates about the cutter rotation support portion. It has a cutter rotation angle regulating portion that regulates the rotation angle of the cutter within a predetermined angle and fixes the rotation angle of the undercutter within the predetermined angle, and rotates the undercutter with the cutter. It is also characterized in that it rotates and is fixed within a predetermined angle regulated by the angle regulating unit.
Further, in the undercutter adapter according to the present invention, the undercutter connecting flat portion provided with the undercutter connecting portion is provided on the upper surface side while the expansion / contraction mechanism portion side connecting portion is provided, and the undercutter connecting flat portion is provided on the lower surface side. The height is different from the undercutter connecting straight portion, and the work vehicle connecting flat surface portion provided with the work vehicle side connecting portion on the upper surface side, the undercutter connecting flat surface portion, and the work vehicle connecting flat surface portion. The flat surface portion for connecting the undercutter has a flat portion for connecting to each other, and the flat surface portion for connecting the undercutter has a length equal to or larger than the width in the lateral direction of the undercutter, and the cutter rotation angle with respect to the adapter for the undercutter. Even if the undercutter rotates within a predetermined angle regulated by the regulating portion, the undercutter is long enough not to interfere with the work vehicle connecting flat surface portion and the flat surface portions connecting portions. And.
Further, in the undercutter adapter according to the present invention, a plurality of undercutter mounting bases to which the undercutter connecting portion is connected in the longitudinal direction of the undercutter are provided on the upper surface side of the undercutter at predetermined intervals. It is also characterized in that the predetermined interval is the same as the interval between the expansion / contraction mechanism portion rotation support portions or the attachment rotation support portions provided on the left and right sides in front of the work vehicle.
Further, in the roadbed excavator according to the present invention, any of the above-mentioned undercutter adapters is provided on one side in the longitudinal direction of the undercutter, and a work vehicle is attached to the undercutter adapter on the one side. It is characterized by being connected.
Further, in the roadbed digging machine according to the present invention, any of the above-mentioned undercutter adapters is provided on both sides in the longitudinal direction of the undercutter, and a work vehicle is connected to each of the undercutter adapters on both sides. It is characterized by being.

本発明に係るアンダーカッター用アダプタでは、アンダーカッターが連結されるアンダーカッター連結部と、伸縮機構部のピストン先端部が回動可能に連結される伸縮機構部側連結部と、シリンダの基端下方の作業車に回動可能に連結される作業車側連結部とを有する。
そのため、ブルドーザーやミニショベル等の伸縮機構部を有する作業車に本発明に係るアンダーカッター用アダプタを介しアンダーカッターを連結することにより、道床脇の路盤を作業車が走行しながら道床の砕石をアンダーカッターで堀削することが可能となる。
その結果、線路を閉鎖せずに砕石掘削作業時も列車が通れる状態で砕石を容易に掘削する無閉鎖バラクリ施工を容易に実行することができる。 In the undercutter adapter according to the present invention, the undercutter connecting portion to which the undercutter is connected, the expansion / contraction mechanism side connecting portion to which the piston tip portion of the expansion / contraction mechanism portion is rotatably connected, and the lower portion of the base end of the cylinder. It has a work vehicle side connecting portion that is rotatably connected to the work vehicle.
Therefore, by connecting the undercutter to a work vehicle having a telescopic mechanism such as a bulldozer or a mini excavator via the undercutter adapter according to the present invention, the work vehicle runs on the roadbed beside the roadbed and undershoots the crushed stones of the roadbed. It is possible to excavate with a cutter.
As a result, it is possible to easily carry out the non-closed crushing construction in which the crushed stone is easily excavated in a state where the train can pass even during the crushed stone excavation work without closing the railroad track.

本発明に係る実施形態のアンダーカッター用アダプタによってアンダーカッターを作業車に取り付けて堀削作業を実行している状態を示す図である。It is a figure which shows the state in which the undercutter is attached to the work vehicle by the undercutter adapter of the embodiment which concerns on this invention, and excavation work is performed. (ａ)，(ｂ)それぞれ本発明に係る実施形態のアンダーカッター用アダプタによって作業車に装着するアンダーカッターの正面図、平面図である。(a) and (b) are a front view and a plan view of an undercutter mounted on a work vehicle by the undercutter adapter of the embodiment according to the present invention, respectively. (ａ)〜(ｃ)それぞれ本発明に係る実施形態のアンダーカッター用アダプタの平面図、正面図、右側面図である。(a) to (c) are a plan view, a front view, and a right side view of the undercutter adapter of the embodiment according to the present invention, respectively. (ａ)，(ｂ)それぞれ本発明に係る実施形態のアンダーカッター用アダプタによって作業車に装着したアンダーカッターを下げている状態、アンダーカッターを昇降させた状態を示す図である。It is a figure which shows the state which the under cutter attached to the work vehicle is lowered, and the state which the under cutter is raised and lowered by the undercutter adapter of the embodiment which concerns on this invention, respectively, (a) and (b). 本発明に係る実施形態のアンダーカッター用アダプタによってアンダーカッターの左右両側にそれぞれ作業車を連結し、作業車の進行方向に対しアンダーカッターの長手方向がほぼ垂直になるように構築した道床堀削機の一例を示す図である。A roadbed excavator constructed by connecting work vehicles to the left and right sides of the under cutter by the under cutter adapter of the embodiment according to the present invention so that the longitudinal direction of the under cutter is substantially perpendicular to the traveling direction of the work vehicle. It is a figure which shows an example. 本発明に係る実施形態のアンダーカッター用アダプタによってアンダーカッターの左右両側にそれぞれ作業車を連結し、作業車の進行方向に対しアンダーカッターの長手方向が傾斜するように連結した例を示す図である。It is a figure which shows the example which connected the work vehicle to the left and right sides of the under cutter by the undercutter adapter of the embodiment which concerns on this invention, and connected so that the longitudinal direction of the undercutter is inclined with respect to the traveling direction of a work vehicle. .. 本発明に係る実施形態のアンダーカッター用アダプタによってアンダーカッターの左右両側にそれぞれ作業車を連結して構築した道床堀削機による道床堀削作業の一例を示す図である。It is a figure which shows an example of the roadbed excavation work by the roadbed excavator constructed by connecting the work vehicles to the left and right sides of the undercutter by the undercutter adapter of the embodiment which concerns on this invention. 本発明に係る実施形態のアンダーカッター用アダプタによってアンダーカッターの基端側に１台の作業車を連結して構築した道床堀削機による道床堀削作業の一例を示す図である。It is a figure which shows an example of the roadbed excavation work by the roadbed excavator constructed by connecting one work vehicle to the base end side of the undercutter by the undercutter adapter of the embodiment which concerns on this invention. 本発明に係る実施形態のアンダーカッター用アダプタによってアンダーカッターの左右両側にそれぞれ作業車を連結して構築した道床堀削機による道床堀削作業の他の一例を示す図である。It is a figure which shows another example of the roadbed excavation work by the roadbed excavator constructed by connecting the work vehicles to the left and right sides of the undercutter by the undercutter adapter of the embodiment of the present invention.

以下、本発明に係る実施形態のアンダーカッター用アダプタ１、およびそのアンダーカッター用アダプタ１を介しミニショベルやブルドーザー等の作業車３にアンダーカッター２を装着して構築した道床堀削機について、添付図面を参照しながら詳細に説明する。なお、下記に説明する実施形態はあくまで本発明の一例であり、本発明は下記の実施形態に限定されるものではなく、本発明の技術思想の範囲内で適宜変更可能である。 Hereinafter, the undercutter adapter 1 of the embodiment according to the present invention and the roadbed excavator constructed by attaching the undercutter 2 to a work vehicle 3 such as a mini excavator or a bulldozer via the undercutter adapter 1 will be attached. This will be described in detail with reference to the drawings. The embodiments described below are merely examples of the present invention, and the present invention is not limited to the following embodiments, and can be appropriately modified within the scope of the technical idea of the present invention.

実施形態のアンダーカッター用アダプタ１は、図１に示すようにクローラー３ａ１で道床脇の路盤等を走行可能なミニショベルやブルドーザー等の周知の作業車３に、アンダーカッター２を取り付けるためのアダプタ（治具）である。 As shown in FIG. 1, the undercutter adapter 1 of the embodiment is an adapter for attaching the undercutter 2 to a well-known work vehicle 3 such as a mini excavator or a bulldozer that can travel on the roadbed beside the roadbed with the crawler 3a1. Jig).

以下、作業車３、アンダーカッター２、実施形態のアンダーカッター用アダプタ１の順に説明する。 Hereinafter, the work vehicle 3, the undercutter 2, and the undercutter adapter 1 of the embodiment will be described in this order.

＜作業車３＞
作業車３は、上述したように周知のもので、クローラー３ａ１によって路盤等を走行すると共に、前方に伸縮機構部３ｂを回動可能に連結する伸縮機構部回動支持部３ａ２と、排土板（ブレード）等のアタッチメントや本実施形態のアンダーカッター用アダプタ１の基部を回動可能に連結するアタッチメント回動支持部３ａ３が設けられた作業車本体３ａと、伸縮機構部回動支持部３ａ２に回動可能に連結され、排土板（ブレード）等のアタッチメントやアンダーカッター２を持ち上げる伸縮機構部３ｂ等を備える。 <Work vehicle 3>
As described above, the work vehicle 3 is a well-known work vehicle, and the crawler 3a1 travels on the roadbed or the like, and the expansion / contraction mechanism portion rotation support portion 3a2 for rotatably connecting the expansion / contraction mechanism portion 3b to the front and a soil removal plate. The work vehicle main body 3a provided with the attachment such as (blade) and the attachment rotation support portion 3a3 for rotatably connecting the base portion of the undercutter adapter 1 of the present embodiment, and the expansion / contraction mechanism portion rotation support portion 3a2. It is rotatably connected and includes an attachment such as a soil removal plate (blade) and a telescopic mechanism portion 3b that lifts the undercutter 2.

伸縮機構部回動支持部３ａ２は、後述する図５〜図８に示すように作業車３の前方の左右両側にそれぞれ２枚ずつ設けられ、計４枚設けられている。同様にアタッチメント回動支持部３ａ３も作業車３の前方の左右両側にそれぞれ２枚ずつ設けられ、計４枚設けられている。尚、アタッチメント回動支持部３ａ３は伸縮機構部回動支持部３ａ２の下方に設けられているため、図５〜図８ではアタッチメント回動支持部３ａ３は図示を省略している。 As shown in FIGS. 5 to 8 described later, two expansion / contraction mechanism unit rotation support portions 3a2 are provided on each of the left and right sides in front of the work vehicle 3, for a total of four. Similarly, two attachment rotation support portions 3a3 are provided on each of the left and right sides in front of the work vehicle 3, for a total of four. Since the attachment rotation support portion 3a3 is provided below the expansion / contraction mechanism portion rotation support portion 3a2, the attachment rotation support portion 3a3 is not shown in FIGS. 5 to 8.

そのため、作業車３は、後述する図５〜図８に示すように作業車３の前方の左右両側のいずれか一方側に実施形態のアンダーカッター用アダプタ１を１つ連結したり、作業車３の前方の左右両側にそれぞれ実施形態のアンダーカッター用アダプタ１を連結してアンダーカッター２を装着することができる。 Therefore, as shown in FIGS. 5 to 8 described later, the work vehicle 3 may be connected to one of the undercutter adapters 1 of the embodiment on either the left or right side in front of the work vehicle 3, or the work vehicle 3 may be connected to the work vehicle 3. The undercutter 2 can be attached by connecting the undercutter adapter 1 of the embodiment to both the left and right sides in front of the above.

伸縮機構部３ｂは、周知のもので、先端にアタッチメント用連結ボルト３ｂ１を有するピストン３ｂ２が伸縮すると共に、シリンダ３ｂ３の基端側がアタッチメント回動支持部３ａ３に伸縮機構部用連結ボルト３ｂ４で回動可能に連結されて構成されており、シリンダ３ｂ３に対しピストン３ｂ２を伸縮することによって排土板（ブレード）等のアタッチメントや本実施形態のアンダーカッター用アダプタ１に取り付けたアンダーカッター２を昇降できるように構成されている。 The telescopic mechanism portion 3b is a well-known one, and the piston 3b2 having the attachment connecting bolt 3b1 at the tip expands and contracts, and the base end side of the cylinder 3b3 rotates to the attachment rotation support portion 3a3 with the telescopic mechanism connecting bolt 3b4. It is configured so that it can be connected so that the attachment such as a soil removal plate (blade) and the undercutter 2 attached to the undercutter adapter 1 of the present embodiment can be raised and lowered by expanding and contracting the piston 3b2 with respect to the cylinder 3b3. It is configured in.

＜アンダーカッター２＞
アンダーカッター２は、例えば、図２(ａ)，(ｂ)に示すように油圧モーター２ａによって回転する駆動歯車(図示せず。)とその駆動歯車と離されて設置された従動歯車２ｃ(図４参照。)とに掛け渡され回転するローラーチェーン等の掘削爪保持チェーンベルト２ｄ(図４参照。)の外側に所定間隔毎に設けた複数の掘削爪２ｅでマクラギＭ下の道床を掘削するもので、ここまでは従来のアンダーカッター２とは変わらない。尚、アンダーカッター２は、油圧モーター２ａの駆動に限らず、電気モーターでも、エンジンによる駆動でも勿論良く、図１や図４等では適宜図示を省略している。 <Under Cutter 2>
The undercutter 2 is, for example, a driving gear (not shown) rotated by a hydraulic motor 2a and a driven gear 2c (not shown) installed apart from the driving gear as shown in FIGS. 2 (a) and 2 (b). Excavate the trackbed under the pillow M with a plurality of excavation claws 2e provided at predetermined intervals on the outside of the excavation claw holding chain belt 2d (see FIG. 4) such as a roller chain that is hung on and rotates. So far, it is the same as the conventional undercutter 2. The undercutter 2 is not limited to driving the hydraulic motor 2a, and may of course be driven by an electric motor or an engine, and is not shown in FIGS. 1 and 4 as appropriate.

そして本実施形態のアンダーカッター２では、その上面側にアンダーカッター２の長手方向の任意の箇所でアンダーカッター用アダプタ１に装着できるようにするため、アンダーカッター２の上側面にアンダーカッター取付架台２ｆが所定間隔ｗ１（図５参照。）毎に複数設けられている。 Then, in the undercutter 2 of the present embodiment, the undercutter mounting base 2f is mounted on the upper side surface of the undercutter 2 so that the undercutter 2 can be attached to the undercutter adapter 1 at an arbitrary position in the longitudinal direction of the undercutter 2 on the upper surface side thereof. Are provided at predetermined intervals w1 (see FIG. 5).

複数のアンダーカッター取付架台２ｆは、それぞれ、アンダーカッター用アダプタ１基部のアンダーカッター連結部を構成する後述のカッター回動支持用通し孔部１ａ１１とカッター回動角規制用長孔部１ａ１２を介してカッター回動支持ボルト１ｄおよびカッター回動角規制ボルト１ｅそれぞれが螺合する雌ネジ孔２ｆ１，２ｆ１が内周面に形成されている。 The plurality of undercutter mounting bases 2f are respectively via the cutter rotation support through hole portion 1a11 and the cutter rotation angle regulation elongated hole portion 1a12, which will be described later, which form the undercutter connection portion of one undercutter adapter. Female screw holes 2f1 and 2f1 into which the cutter rotation support bolt 1d and the cutter rotation angle regulation bolt 1e are screwed are formed on the inner peripheral surface.

ここで、後述する図５に示すようにアンダーカッター２の長手方向に複数のアンダーカッター取付架台２ｆを設ける所定間隔ｗ１は、作業車３前方の左右両側に設けた伸縮機構部回動支持部３ａ２またはアタッチメント回動支持部３ａ３同士の間隔Ｗ２とする。 Here, as shown in FIG. 5 to be described later, the predetermined intervals w1 in which a plurality of undercutter mounting bases 2f are provided in the longitudinal direction of the undercutter 2 are the expansion / contraction mechanism portion rotation support portions 3a2 provided on both the left and right sides in front of the work vehicle 3. Alternatively, the distance W2 between the attachment rotation support portions 3a3 is set.

そのため、実施形態のアンダーカッター用アダプタ１によれば、後述する図５〜図７に示すようにアンダーカッター２の長手方向の左右両側に作業車３を連結する場合だけでなく、後述する図８に示すように１台の作業車３に２つのアンダーカッター用アダプタ１を介しアンダーカッター２に連結し、レールＲおよびマクラギＭの片側に配置した１台の作業車３のアンダーカッター２によってレールＲおよびマクラギＭからなる道床脇の片側の路盤を走行しながら砕石を堀削する場合でも、２つのアンダーカッター用アダプタ１で走行抵抗や堀削抵抗を受けることができるので、安定して堀削作業を行うことができる。 Therefore, according to the undercutter adapter 1 of the embodiment, not only when the work vehicles 3 are connected to the left and right sides of the undercutter 2 in the longitudinal direction as shown in FIGS. 5 to 7 described later, but also in FIG. 8 described later. As shown in the above, one work vehicle 3 is connected to the under cutter 2 via two undercutter adapters 1, and the rail R is connected to the rail R and the rail R by the undercutter 2 of one work vehicle 3 arranged on one side of the sleeper M. And even when digging crushed stone while running on the roadbed on one side of the roadbed made of sleepers M, the two undercutter adapters 1 can receive running resistance and digging resistance, so stable digging work It can be performed.

（アンダーカッター用アダプタ１）
本実施形態のアンダーカッター用アダプタ１は、アンダーカッター２を作業車３に装着するためのアダプタで、図３(ａ)〜(ｃ)に示すように構成されており、アダプタ本体１ａの前後にそれぞれ伸縮機構部側連結部１ｂと作業車側連結部１ｃとが接合されて構成されている。 (Adapter for undercutter 1)
The undercutter adapter 1 of the present embodiment is an adapter for mounting the undercutter 2 on the work vehicle 3, and is configured as shown in FIGS. 3A to 3C, and is located in front of and behind the adapter main body 1a. The expansion / contraction mechanism side connecting portion 1b and the work vehicle side connecting portion 1c are joined to each other.

アダプタ本体１ａは、上面側には伸縮機構部側連結部１ｂが溶接等によって設けられる一方、下面側にはアンダーカッター連結部を構成するカッター回動支持用通し孔部１ａ１１およびカッター回動角規制用長孔部１ａ１２が設けられたアンダーカッター連結用平面部１ａ１と、アンダーカッター連結用平面部１ａ１とは高さが異なり、上面側に作業車側連結部１ｃが溶接等によって設けられた作業車連結用平面部１ａ２と、アンダーカッター連結用平面部１ａ１と作業車連結用平面部１ａ２とを傾斜面で段違いになるように連結する平面部同士連結傾斜面部１ａ３とを有し、アンダーカッター連結用平面部１ａ１は、アンダーカッター２の短手方向の幅以上の長さであって、後述する図６や図７に示すようにアダプタ本体１ａに対しカッター回動角規制用長孔部１ａ１２が規制する所定の角度内でアンダーカッター２が回動しても、アンダーカッター２が作業車連結用平面部１ａ２および平面部同士連結傾斜面部１ａ３に干渉しないような長さに構成している。 In the adapter body 1a, the expansion / contraction mechanism side connecting portion 1b is provided on the upper surface side by welding or the like, while the cutter rotation supporting through hole portion 1a11 constituting the undercutter connecting portion and the cutter rotation angle regulation are provided on the lower surface side. The height of the undercutter connecting flat surface portion 1a1 provided with the long hole portion 1a12 is different from that of the undercutter connecting flat surface portion 1a1, and the work vehicle side connecting portion 1c is provided on the upper surface side by welding or the like. It has a connecting flat surface portion 1a2, an undercutter connecting flat surface portion 1a1 and a work vehicle connecting flat surface portion 1a2 so as to be staggered on an inclined surface, and has an inclined surface portion 1a3 for connecting the undercutters. The flat surface portion 1a1 has a length equal to or greater than the width of the undercutter 2 in the lateral direction, and as shown in FIGS. 6 and 7 described later, the elongated hole portion 1a12 for regulating the cutter rotation angle is restricted with respect to the adapter main body 1a. Even if the undercutter 2 rotates within a predetermined angle, the undercutter 2 is configured to have a length that does not interfere with the work vehicle connecting flat surface portion 1a2 and the flat surface portions connecting the flat surface portions 1a3.

またアンダーカッター連結用平面部１ａ１には、上述したように下面側にアンダーカッター２を連結するため、図３(ａ)〜(ｃ)に示すようにアンダーカッター２の上面側に所定間隔ｗ１で複数設けられたアンダーカッター取付架台２ｆ（図２(ａ)，(ｂ)参照。）の内、１のアンダーカッター取付架台２ｆの雌ネジ孔２ｆ１に螺合するカッター回動支持ボルト１ｄが通り、アンダーカッター２を回動可能に支持するカッター回動支持用通し孔部１ａ１１と、カッター回動支持ボルト１ｄおよびカッター回動支持用通し孔部１ａ１１を中心に回動するアンダーカッター２の回動角を所定の角度内に規制すると共に、その所定の角度内でアンダーカッター２の回動角をカッター回動角規制ボルト１ｅおよびナットで固定するカッター回動角規制部としてのカッター回動角規制用長孔部１ａ１２とを有する。 Further, since the undercutter 2 is connected to the undercutter connecting flat surface portion 1a1 on the lower surface side as described above, as shown in FIGS. 3A to 3C, the undercutter 2 is connected to the upper surface side at a predetermined interval w1. Of the plurality of undercutter mounting bases 2f (see FIGS. 2A and 2b), the cutter rotation support bolt 1d screwed into the female screw hole 2f1 of the undercutter mounting base 2f of 1 passes through. Rotation angle of the cutter rotation support through hole 1a11 that rotatably supports the undercutter 2 and the undercutter 2 that rotates about the cutter rotation support bolt 1d and the cutter rotation support through hole 1a11. Is regulated within a predetermined angle, and the rotation angle of the undercutter 2 is fixed within the predetermined angle with the cutter rotation angle regulating bolt 1e and the nut. It has an elongated hole portion 1a12.

伸縮機構部側連結部１ｂは、アダプタ本体１ａ先端部の上側、すなわちアンダーカッター連結用平面部１ａ１のカッター回動支持用通し孔部１ａ１１の上側に設けられるもので、排土板（ブレード）等のアタッチメントの代わりに作業車３の前方に設けられた伸縮機構部３ｂのシリンダ３ｂ３から伸縮するピストン３ｂ２先端に設けたアタッチメント用連結ボルト３ｂ１が連結されるアタッチメント連結用孔部１ｂ１，１ｂ１が設けられていると共に、アンダーカッター連結用平面部１ａ１のカッター回動支持用通し孔部１ａ１１に連通するボルト挿通孔１ｂ２が設けられている。。 The expansion / contraction mechanism side connecting portion 1b is provided on the upper side of the tip end portion of the adapter body 1a, that is, on the upper side of the cutter rotation support through hole portion 1a11 of the undercutter connecting flat surface portion 1a1, and is provided on the earth removal plate (blade) or the like. Attachment connection holes 1b1, 1b1 are provided to connect the attachment connection bolts 3b1 provided at the tip of the piston 3b2 that expands and contracts from the cylinder 3b3 of the expansion / contraction mechanism 3b provided in front of the work vehicle 3 instead of the attachment of. In addition, a bolt insertion hole 1b2 that communicates with the cutter rotation support through hole 1a11 of the undercutter connection flat surface portion 1a1 is provided. ..

作業車側連結部１ｃは、伸縮機構部３ｂを構成するシリンダ３ｂの基端下方の作業車３前方のアタッチメント回動支持部３ａ３に回動可能に連結されるもので、連結ボルト３ｅやナット等によって上下方向に回動可能に連結される箇所で、連結ボルト３ｅが通るアダプタ連結用孔部１ｃ１，１ｃ１が設けられている。 The work vehicle side connecting portion 1c is rotatably connected to the attachment rotation support portion 3a3 in front of the work vehicle 3 below the base end of the cylinder 3b constituting the telescopic mechanism portion 3b, and is rotatably connected to the connecting bolt 3e, nut, etc. Adapter connecting holes 1c1 and 1c1 through which the connecting bolts 3e pass are provided at locations where they are rotatably connected in the vertical direction.

そのため、図４(ａ)に示すようにアンダーカッター用アダプタ１のアンダーカッター連結部１ａにアンダーカッター１上面側のアンダーカッター取付架台２ｆを連結し、アンダーカッター用アダプタ１の伸縮機構部側連結部１ｂに作業車３前方の伸縮機構部３ｂを構成する伸縮可能なピストン３ｂ２先端のアタッチメント用連結ボルト３ｂ１を連結する一方、アンダーカッター用アダプタ１の作業車側連結部１ｃと作業車３前方のアタッチメント回動支持部３ａ３を連結すると、作業車３による伸縮機構部３ｂの操作によって図４(ｂ)に示すようにピストン３ｂ２を収縮させてアンダーカッター２を持ち上げたり、図１や図４(ａ)に示すようにピストン３ｂ２を伸長させてアンダーカッター２を下げることができる。 Therefore, as shown in FIG. 4A, the undercutter mounting base 2f on the upper surface side of the undercutter 1 is connected to the undercutter connecting portion 1a of the undercutter adapter 1, and the expanding / contracting mechanism side connecting portion of the undercutter adapter 1 is connected. While connecting the attachment connecting bolt 3b1 at the tip of the telescopic piston 3b2 that constitutes the telescopic mechanism 3b in front of the work vehicle 3 to 1b, the work vehicle side connection 1c of the undercutter adapter 1 and the attachment in front of the work vehicle 3 When the rotation support portion 3a3 is connected, the piston 3b2 is contracted and the undercutter 2 is lifted by the operation of the expansion / contraction mechanism portion 3b by the work vehicle 3 as shown in FIG. 4B, or FIG. 1 and FIG. The undercutter 2 can be lowered by extending the piston 3b2 as shown in.

＜実施形態のアンダーカッター用アダプタ１の使用方法や堀削作業の一例＞
次に、以上のように構成された実施形態のアンダーカッター用アダプタ１を使用したアンダーカッター２と作業車３による堀削作業の一例について説明する。 <Example of how to use the undercutter adapter 1 of the embodiment and excavation work>
Next, an example of excavation work by the undercutter 2 and the work vehicle 3 using the undercutter adapter 1 of the embodiment configured as described above will be described.

（アンダーカッター２の左右両側に作業車３を連結して構築した道床堀削機の一例）
図５，(ｂ)はアンダーカッター２の左右両側にそれぞれアンダーカッター用アダプタ１を介して作業車３を連結して構築した道床堀削機の一例を示しており、図５は、レールＲに対しアンダーカッター２の長手方向がほぼ垂直、すなわち作業車３の進行方向に対しアンダーカッター２の長手方向がほぼ垂直になるように連結した例、図６は、レールＲに対しアンダーカッター２の長手方向が傾斜、すなわち作業車３の進行方向に対しアンダーカッター２の長手方向が傾斜するように連結した例を示す図である。 (An example of a roadbed excavator constructed by connecting work vehicles 3 to the left and right sides of the undercutter 2)
FIGS. 5 and 5B show an example of a roadbed excavator constructed by connecting a work vehicle 3 to the left and right sides of the undercutter 2 via an undercutter adapter 1, respectively, and FIG. 5 shows a rail R. On the other hand, in an example in which the longitudinal direction of the undercutter 2 is substantially perpendicular to each other, that is, the longitudinal direction of the undercutter 2 is substantially perpendicular to the traveling direction of the work vehicle 3, FIG. 6 shows the longitudinal direction of the undercutter 2 with respect to the rail R. It is a figure which shows the example which connected so that the direction is inclined, that is, the longitudinal direction of an undercutter 2 is inclined with respect to the traveling direction of a work vehicle 3.

図５，(ｂ)共に２つのアンダーカッター用アダプタ１間にアンダーカッター２の左右両側のアンダーカッター取付架台２ｆを連結しているが、図５では、アンダーカッター用アダプタ１のアンダーカッター連結部１ａのカッター回動角規制用長孔部１ａ１２の中央にカッター回動角規制ボルト１ｅを通して作業車３の進行方向に対しアンダーカッター２の長手方向がほぼ垂直になるように連結している。 In both FIGS. 5 and 5 (b), the undercutter mounting bases 2f on the left and right sides of the undercutter 2 are connected between the two undercutter adapters 1, but in FIG. 5, the undercutter connecting portion 1a of the undercutter adapter 1 is connected. The cutter rotation angle regulating bolt 1e is passed through the center of the elongated hole portion 1a12 for regulating the cutter rotation angle, and is connected so that the longitudinal direction of the undercutter 2 is substantially perpendicular to the traveling direction of the work vehicle 3.

これに対し、図６では、アンダーカッター用アダプタ１のアンダーカッター連結部１ａのカッター回動角規制用長孔部１ａ１２の両端部にカッター回動角規制ボルト１ｅを通して作業車３の進行方向に対しアンダーカッター２の長手方向が傾斜するように連結している。 On the other hand, in FIG. 6, the cutter rotation angle regulating bolts 1e are passed through both ends of the cutter rotation angle regulating elongated hole portions 1a12 of the undercutter connecting portion 1a of the undercutter adapter 1 with respect to the traveling direction of the work vehicle 3. The undercutter 2 is connected so as to be inclined in the longitudinal direction.

アンダーカッター２の左右両側にそれぞれアンダーカッター用アダプタ１を介して作業車３を連結して道床堀削機を構築した場合には、図７に示すようにレールＲおよびマクラギＭの両側にアンダーカッター用アダプタ１を介してアンダーカッター２の左右両側を連結した作業車３．３を配置して、マクラギＭ下の砕石を堀削することができる。 When the work vehicle 3 is connected to the left and right sides of the undercutter 2 via the undercutter adapter 1 to construct a roadbed excavator, the undercutters are on both sides of the rail R and the sleeper M as shown in FIG. A work vehicle 3.3 in which the left and right sides of the undercutter 2 are connected via the adapter 1 can be arranged to excavate the crushed stone under the sleeper M.

尚、この場合には、アンダーカッター２は、長いロングタイプを使用することになる。 In this case, the undercutter 2 uses a long long type.

（アンダーカッター２の一方側に作業車３を連結して構築した道床堀削機の一例）
図８はアンダーカッター２の基端側にアンダーカッター用アダプタ１を介して作業車３を連結して構築した道床堀削機の一例を示す図である。 (An example of a roadbed excavator constructed by connecting a work vehicle 3 to one side of the undercutter 2)
FIG. 8 is a diagram showing an example of a roadbed excavator constructed by connecting a work vehicle 3 to the base end side of the undercutter 2 via an undercutter adapter 1.

図８に示すように、１台の作業車３に２つのアンダーカッター用アダプタ１を介しアンダーカッター２に連結することもできる。 As shown in FIG. 8, one work vehicle 3 can be connected to the undercutter 2 via two undercutter adapters 1.

この場合には、１台の作業車３でアンダーカッター２による堀削時の抵抗等を受ける必要があるため、作業車３の前方の左右両側にそれぞれ２枚ずつ設けられ、計４枚設けられた伸縮機構部回動支持部３ａ２およびアタッチメント回動支持部３ａ３に２つのアンダーカッター用アダプタ１を連結し、２つのアンダーカッター用アダプタ１をアンダーカッター２の２箇所のアンダーカッター取付架台２ｆ，２ｆに固定してアンダーカッター２を装着する。 In this case, since it is necessary for one work vehicle 3 to receive resistance during excavation by the undercutter 2, two pieces are provided on each of the left and right sides in front of the work vehicle 3, for a total of four pieces. Two undercutter adapters 1 are connected to the expansion / contraction mechanism rotation support portion 3a2 and the attachment rotation support portion 3a3, and the two undercutter adapters 1 are connected to the two undercutter mounting bases 2f and 2f of the undercutter 2. The undercutter 2 is attached by fixing it to.

そして、図８に示すようにレールＲおよびマクラギＭの片側に配置した１台の作業車３で２つのアンダーカッター用アダプタ１を介し基端側を固定したアンダーカッター２によってレールＲおよびマクラギＭからなる道床脇の片側の路盤を走行しながら砕石を堀削する。 Then, as shown in FIG. 8, one work vehicle 3 arranged on one side of the rail R and the sleeper M is provided with an undercutter 2 whose base end side is fixed via two undercutter adapters 1 from the rail R and the sleeper M. Crushed stones are excavated while running on the roadbed on one side of the roadbed.

＜実施形態のアンダーカッター用アダプタ１の主な効果＞
以上説明したように、本発明に係る実施形態のアンダーカッター用アダプタ１は、アンダーカッター２が連結されるアンダーカッター連結部１ａと、アタッチメント用連結ボルト３ｂ１が回動可能に連結される伸縮機構部側連結部１ｂと、シリンダ３ｂ３の基端下方の作業車３に回動可能に連結される作業車側連結部１ｃとを有するため、ブルドーザーやミニショベル等の伸縮機構部３ｂを有する作業車３にアンダーカッター用アダプタ１を介してアンダーカッター２を連結することにより、作業車３で道床脇の路盤を走行しながら道床の砕石をアンダーカッター２で堀削することができる。 <Main effects of the undercutter adapter 1 of the embodiment>
As described above, in the undercutter adapter 1 of the embodiment according to the present invention, the undercutter connecting portion 1a to which the undercutter 2 is connected and the expansion / contraction mechanism portion to which the attachment connecting bolt 3b1 is rotatably connected are connected. A work vehicle 3 having a telescopic mechanism 3b such as a bulldozer or a mini excavator because it has a side connecting portion 1b and a work vehicle side connecting portion 1c rotatably connected to a work vehicle 3 below the base end of the cylinder 3b3. By connecting the undercutter 2 to the undercutter 2 via the undercutter adapter 1, the undercutter 2 can excavate crushed stones on the roadbed while the work vehicle 3 runs on the roadbed beside the roadbed.

その結果、レールＲ上を走行しなくても道床の砕石をアンダーカッター２で堀削することができるので、線路を閉鎖せずに砕石掘削作業時も列車が通れる状態で砕石を容易に掘削する無閉鎖バラクリ施工を容易に実行することができる。 As a result, the crushed stones on the trackbed can be excavated with the undercutter 2 without traveling on the rail R, so that the crushed stones can be easily excavated in a state where the train can pass even during the crushed stone excavation work without closing the railroad track. Non-closed crushing construction can be easily performed.

また、本発明に係る実施形態のアンダーカッター用アダプタ１では、アンダーカッター連結部は、アンダーカッター２を回動可能に支持するカッター回動支持用通し孔部１ａ１１と、カッター回動支持用通し孔部１ａ１１を中心に回動するアンダーカッター２の回動角を所定の角度内に規制すると共に、その所定の角度内でアンダーカッター２の回動角を固定するカッター回動角規制用長孔部１ａ１２とを有する。 Further, in the undercutter adapter 1 of the embodiment according to the present invention, the undercutter connecting portion includes a cutter rotation support through hole portion 1a11 that rotatably supports the undercutter 2 and a cutter rotation support through hole. Cutter rotation angle regulating elongated hole portion that regulates the rotation angle of the undercutter 2 that rotates around the portion 1a11 within a predetermined angle and fixes the rotation angle of the undercutter 2 within the predetermined angle. It has 1a12 and.

そのため、本発明に係る実施形態のアンダーカッター用アダプタ１によれば、アンダーカッター２を連結する際にアンダーカッター２を作業車３の進行方向に対し垂直ないしは傾斜させてセットすることが可能となり、道床の砕石をアンダーカッター２で容易に堀削することができ、無閉鎖バラクリ施工を効率良く実行することができる。 Therefore, according to the undercutter adapter 1 of the embodiment according to the present invention, when connecting the undercutter 2, the undercutter 2 can be set perpendicular to or inclined with respect to the traveling direction of the work vehicle 3. The crushed stones on the trackbed can be easily excavated with the undercutter 2, and the non-closed loosening construction can be efficiently performed.

また、本発明に係る実施形態のアンダーカッター用アダプタ１では、上面側には伸縮機構部側連結部１ｂが設けられる一方、下面側にはアンダーカッター連結部１ａが設けられたアンダーカッター連結用平面部１ａ１と、アンダーカッター連結用平面部１ａ１とは高さが異なり、上面側に作業車側連結部１ｃが設けられた作業車連結用平面部１ａ２と、アンダーカッター連結用平面部１ａ１と作業車連結用平面部１ａ２とを連結する平面部同士連結傾斜面部１ａ３とを有し、アンダーカッター連結用平面部１ａ１は、アンダーカッター２の短手方向の幅以上の長さであって、当該アンダーカッター用アダプタ１に対しカッター回動角規制用長孔部１ａ１２が規制する所定の角度内でアンダーカッター２が回動しても、アンダーカッター２が作業車連結用平面部１ａ２および平面部同士連結傾斜面部１ａ３に干渉しないような長さに構成している。 Further, in the undercutter adapter 1 of the embodiment according to the present invention, the undercutter connecting flat surface is provided with the expansion / contraction mechanism side connecting portion 1b on the upper surface side and the undercutter connecting portion 1a on the lower surface side. The heights of the portion 1a1 and the undercutter connecting flat surface portion 1a1 are different, and the work vehicle connecting flat surface portion 1a2 having the work vehicle side connecting portion 1c provided on the upper surface side, the undercutter connecting flat surface portion 1a1 and the work vehicle The undercutter connecting flat surface portion 1a1 has a length equal to or larger than the width in the lateral direction of the undercutter 2 and has an inclined surface portion 1a3 for connecting the flat surface portions connecting the connecting flat surface portions 1a2. Even if the undercutter 2 rotates within a predetermined angle regulated by the elongated hole portion 1a12 for regulating the cutter rotation angle with respect to the adapter 1, the undercutter 2 is inclined to connect the work vehicle connecting flat surface portion 1a2 and the flat surface portions. The length is configured so as not to interfere with the surface portion 1a3.

そのため、本発明に係る実施形態のアンダーカッター用アダプタ１によれば、アンダーカッター２を連結する際にアンダーカッター２を回動させた場合でも、アンダーカッター２が作業車連結用平面部１ａ２および平面部同士連結傾斜面部１ａ３に干渉しないので、カッター回動角規制用長孔部１ａ１２が規制する所定の角度内でアンダーカッター２を自由に回動させ道床の砕石を堀削することができ、無閉鎖バラクリ施工を効率良く実行することができる。 Therefore, according to the undercutter adapter 1 of the embodiment according to the present invention, even when the undercutter 2 is rotated when connecting the undercutter 2, the undercutter 2 is connected to the work vehicle connecting flat surface portion 1a2 and the flat surface. Since the portions do not interfere with the inclined surface portion 1a3, the undercutter 2 can be freely rotated within a predetermined angle regulated by the elongated hole portion 1a12 for regulating the cutter rotation angle to excavate crushed stones on the trackbed. It is possible to efficiently carry out closed disassembly construction.

また、本発明に係る実施形態のアンダーカッター用アダプタ１では、アンダーカッター２の上面側には、アンダーカッター連結部を構成するアダプタ本体１ａのアンダーカッター連結用平面部１ａ１に設けたカッター回動支持用通し孔部１ａ１１およびカッター回動角規制用長孔部１ａ１２に対しカッター回動支持ボルト１ｄおよびカッター回動角規制ボルト１ｅによって連結されるアンダーカッター取付架台２ｆが当該アンダーカッター２の長手方向に所定間隔ｗ１で複数設けられている。 Further, in the undercutter adapter 1 of the embodiment according to the present invention, the cutter rotation support provided on the undercutter connecting flat surface portion 1a1 of the adapter main body 1a constituting the undercutter connecting portion is provided on the upper surface side of the undercutter 2. The undercutter mounting base 2f connected by the cutter rotation support bolt 1d and the cutter rotation angle regulation bolt 1e to the through hole portion 1a11 and the elongated hole portion 1a12 for regulating the cutter rotation angle is in the longitudinal direction of the undercutter 2. A plurality of them are provided at a predetermined interval w1.

そのため、本発明に係る実施形態のアンダーカッター用アダプタ１によれば、アンダーカッター２の長手方向に所定間隔ｗ１で複数設けられたアンダーカッター取付架台２ｆを任意に選択してアンダーカッター２を連結することにより、アンダーカッター２の長さを調整することができ、、無閉鎖バラクリ施工を効率良く実行することができる。 Therefore, according to the undercutter adapter 1 of the embodiment according to the present invention, a plurality of undercutter mounting bases 2f provided at predetermined intervals w1 in the longitudinal direction of the undercutter 2 are arbitrarily selected to connect the undercutter 2. As a result, the length of the undercutter 2 can be adjusted, and the non-closed loosening construction can be efficiently executed.

特に、本発明に係る実施形態のアンダーカッター用アダプタ１では、アンダーカッター２の長手方向にアンダーカッター取付架台２ｆを設ける所定間隔ｗ１を、作業車３前方の左右両側に設けた伸縮機構部回動支持部３ａ２またはアタッチメント回動支持部３ａ３の間隔ｗ２と同一にしているため、図８に示すように２つのアンダーカッター用アダプタ１を介して１台の作業車３に１つのアンダーカッター２を連結することが可能となる。 In particular, in the undercutter adapter 1 of the embodiment according to the present invention, the expansion / contraction mechanism portion rotation provided on both the left and right sides in front of the work vehicle 3 at predetermined intervals w1 for providing the undercutter mounting base 2f in the longitudinal direction of the undercutter 2. Since the distance w2 between the support portion 3a2 or the attachment rotation support portion 3a3 is the same, one undercutter 2 is connected to one work vehicle 3 via two undercutter adapters 1 as shown in FIG. It becomes possible to do.

そのため、本発明に係る実施形態のアンダーカッター用アダプタ１によれば、レールＲおよびマクラギＭの片側に配置した１台の作業車３で２つのアンダーカッター用アダプタ１を介し固定した１つのアンダーカッター２によってレールＲおよびマクラギＭからなる道床脇の片側の路盤を走行しながら砕石を堀削することが可能となり、１台の作業車３に対してもアンダーカッター２を安定した状態で装着して、無閉鎖バラクリ施工を効率良く実行することができる。 Therefore, according to the undercutter adapter 1 of the embodiment according to the present invention, one undercutter fixed via two undercutter adapters 1 by one work vehicle 3 arranged on one side of the rail R and the sleeper M. 2 makes it possible to excavate crushed stones while traveling on the roadbed on one side of the roadbed consisting of rail R and sleepers M, and the undercutter 2 can be attached to one work vehicle 3 in a stable state. , Non-closed sleeper construction can be performed efficiently.

また、本発明に係る実施形態のアンダーカッター用アダプタ１を図５，(ｂ)に示すようにアンダーカッター２の左右両側に設けてアンダーカッター２の左右両側に作業車３を連結して道床堀削機を構築した場合には、図７に示すようにレールＲおよびマクラギＭの両側にそれぞれ作業車３．３を配置し、２台の作業車３．３を走行させながらマクラギＭ下の砕石を堀削したり、図８に示すように１台の作業車３に２つのアンダーカッター用アダプタ１を介しアンダーカッター２に連結し、レールＲおよびマクラギＭの片側に配置した１台の作業車３で２つのアンダーカッター用アダプタ１を介し基端側を固定したアンダーカッター２によってレールＲおよびマクラギＭからなる道床脇の片側の路盤を走行しながら砕石を堀削することが可能となり、この点でも無閉鎖バラクリ施工を効率良く実行することができる。 Further, as shown in FIGS. 5 and 5 (b), the undercutter adapter 1 of the embodiment according to the present invention is provided on both the left and right sides of the undercutter 2 and the work vehicles 3 are connected to the left and right sides of the undercutter 2 to provide a trackbed moat. When the shaving machine is constructed, as shown in FIG. 7, work vehicles 3.3 are arranged on both sides of the rail R and the sleeper M, and the crushed stone under the sleeper M is run while the two work vehicles 3.3 are running. Is excavated, or as shown in FIG. 8, one work vehicle is connected to the undercutter 2 via two undercutter adapters 1 to one work vehicle 3 and arranged on one side of the rail R and the sleeper M. The undercutter 2 whose base end side is fixed via the two undercutter adapters 1 in 3 makes it possible to excavate crushed stones while traveling on the roadbed on one side of the roadbed consisting of rail R and sleepers M. However, it is possible to efficiently carry out unclosed sleeper construction.

尚、上記実施形態の説明では、作業車３は、その前方の左右両側に伸縮機構部回動支持部３ａ２およびアタッチメント回動支持部３ａ３をそれぞれ２枚ずつ設け、図５〜図７に示すように作業車３の前方の左右両側のいずれか一方側にアンダーカッター用アダプタ１を１つ連結したり、図８に示すように作業車３の前方の左右両側にそれぞれアンダーカッター用アダプタ１を連結してアンダーカッター２を装着するように説明したが、本発明ではこのような作業車３に限らず、例えば、図９に示す作業車３’のように図５〜図８に示す作業車３よりも小型で、作業車３’の前方の中央に伸縮機構部回動支持部３ａ２およびアタッチメント回動支持部３ａ３を一組ずつ設け、実施形態のアンダーカッター用アダプタ１を１つだけ連結してアンダーカッター２を装着するように構成しても勿論良い。ただし、この作業車３’の場合は、小型の作業車でアンダーカッター用アダプタ１を１つだけ使用することになるので、図９(ａ)に示すように２台の作業車３’でアンダーカッター２の長手方向の両側を連結して堀削作業することが多くなるものの、図８に示すように１台の作業車３’で１つのアンダーカッター用アダプタ１を介してアンダーカッター２を装着して堀削作業することを否定するものではない。 In the description of the above embodiment, the work vehicle 3 is provided with two telescopic mechanism rotation support portions 3a2 and two attachment rotation support portions 3a3 on the left and right sides in front of the work vehicle 3, as shown in FIGS. 5 to 7. One undercutter adapter 1 is connected to either one of the left and right sides in front of the work vehicle 3, or the undercutter adapter 1 is connected to both the left and right sides in front of the work vehicle 3 as shown in FIG. However, in the present invention, the work vehicle 3 shown in FIGS. 5 to 8 is not limited to the work vehicle 3 as shown in FIG. It is smaller than the work vehicle 3', and a set of a telescopic mechanism portion rotation support portion 3a2 and an attachment rotation support portion 3a3 are provided in the center of the front of the work vehicle 3', and only one undercutter adapter 1 of the embodiment is connected. Of course, the undercutter 2 may be mounted. However, in the case of this work vehicle 3', only one undercutter adapter 1 is used in a small work vehicle, so as shown in FIG. 9A, two work vehicles 3'are under. Although excavation work is often performed by connecting both sides of the cutter 2 in the longitudinal direction, the undercutter 2 is mounted on one work vehicle 3'via one undercutter adapter 1 as shown in FIG. It does not deny the excavation work.

また、上記実施形態の説明では、アンダーカッター用アダプタ１を介してアンダーカッター２を装着する作業車３，３’は、ミニショベルやブルドーザー等のクローラー３ａ１付きの作業車で説明したが、本発明ではこれに限らず、クローラー３ａ１の無いトラクターのような作業車でも良いし、さらにはクローラー３ａ１とレールＲ上を走行可能な車輪を有する軌陸両用車でも勿論良い。 Further, in the description of the above embodiment, the work vehicles 3 and 3'to which the undercutter 2 is attached via the undercutter adapter 1 have been described as a work vehicle with a crawler 3a1 such as a mini excavator or a bulldozer. Then, the present invention is not limited to this, and a work vehicle such as a tractor without a crawler 3a1 may be used, and of course, a road-rail vehicle having a crawler 3a1 and wheels capable of traveling on the rail R may be used.

１アンダーカッター用アダプタ
１ａアダプタ本体
１ａ１アンダーカッター連結用平面部
１ａ１１カッター回動支持用通し孔部（アンダーカッター連結部）
１ａ１２カッター回動角規制用長孔部（アンダーカッター連結部）
１ａ２作業車連結用平面部
１ａ３平面部同士連結傾斜面部
１ｂ伸縮機構部側連結部
１ｂ１アタッチメント連結用孔部
１ｂ２ボルト挿通孔
１ｃ作業車側連結部
１ｃ１アダプタ連結用孔部
１ｄカッター回動支持ボルト
１ｅカッター回動角規制ボルト
１ｆアダプタ用連結ボルト
２アンダーカッター
２ａ油圧モーター
２ｃ従動歯車
２ｄ掘削爪保持チェーンベルト
２ｅ掘削爪
２ｆアンダーカッター取付架台
２ｆ１雌ネジ孔
３，３’ 作業車
３ａ作業車本体
３ａ１クローラー
３ａ２伸縮機構部回動支持部
３ａ３アタッチメント回動支持部
３ｂ伸縮機構部
３ｂ１アタッチメント用連結ボルト
３ｂ２ピストン
３ｂ３シリンダ
３ｂ４伸縮機構部用連結ボルト
Ｒレール
Ｍマクラギ 1 Under-cutter adapter 1a Adapter body 1a1 Under-cutter connection flat surface 1a11 Cutter rotation support through hole (under-cutter connection)
1a12 Cutter rotation angle regulation long hole (under cutter connection)
1a2 Work vehicle connection flat part 1a3 Flat part connection inclined surface part 1b Telescopic mechanism side connection part 1b1 Attachment connection hole 1b2 Bolt insertion hole 1c Work vehicle side connection 1c1 Adapter connection hole 1d Cutter rotation support bolt 1e Cutter rotation angle regulation bolt 1f Adapter connecting bolt 2 Undercutter 2a Hydraulic motor 2c Driven gear 2d Excavation claw holding chain belt 2e Excavation claw 2f Undercutter mounting base 2f1 Female screw hole 3,3'Work vehicle 3a Work vehicle body 3a1 Crawler 3a2 Telescopic mechanism part Rotating support part 3a3 Attachment rotation support part 3b Telescopic mechanism part 3b1 Attachment connecting bolt 3b2 Piston 3b3 Cylinder 3b4 Telescopic mechanism part connecting bolt R Rail M McLaugh

Claims

For an undercutter for attaching an undercutter for excavating the trackbed under the sleepers to the tip of the piston of a work vehicle having a telescopic mechanism in which the base end side of the cylinder is rotatably supported while the piston expands and contracts from the cylinder. It ’s an adapter,
The undercutter connecting portion to which the undercutter is connected and
The expansion / contraction mechanism side connecting portion rotatably connected to the piston tip portion of the expansion / contraction mechanism portion,
An undercutter adapter having a work vehicle side connecting portion that is rotatably connected to the work vehicle.

In the undercutter adapter according to claim 1,
The undercutter connecting portion
A cutter rotation support portion that rotatably supports the under cutter,
Cutter rotation angle regulation that regulates the rotation angle of the undercutter that rotates around the cutter rotation support portion within a predetermined angle and fixes the rotation angle of the undercutter within the predetermined angle. Has a part and
An adapter for an undercutter, characterized in that the undercutter is rotated and fixed within a predetermined angle regulated by the cutter rotation angle regulating portion.

In the undercutter adapter according to claim 2,
An undercutter connecting flat surface portion provided with the undercutter connecting portion is provided on the upper surface side while the expansion / contraction mechanism portion side connecting portion is provided.
A work vehicle connecting flat surface portion having a height different from that of the undercutter connecting straight portion and having the work vehicle side connecting portion provided on the upper surface side,
It has a flat surface portion for connecting the undercutter connection flat portion and a flat surface portion for connecting the work vehicle connecting flat surface portion, and has a connecting portion.
The undercutter connecting flat surface portion has a length equal to or longer than the width in the lateral direction of the undercutter, and the undercutter is within a predetermined angle regulated by the cutter rotation angle regulating portion with respect to the undercutter adapter. An undercutter adapter having a length such that the undercutter does not interfere with the work vehicle connecting flat surface portion and the flat surface portions connecting portions even when the cutter rotates.

In the undercutter adapter according to any one of claims 1 to 3.
On the upper surface side of the undercutter, a plurality of undercutter mounting bases to which the undercutter connecting portion is connected in the longitudinal direction of the undercutter are provided at predetermined intervals.
An undercutter adapter characterized in that the predetermined spacing is the same as the spacing between the expansion / contraction mechanism rotation support portions or the attachment rotation support portions provided on the left and right sides in front of the work vehicle.

The undercutter adapter according to any one of claims 1 to 4 is provided on one side of the undercutter in the longitudinal direction, and a work vehicle is attached to the undercutter adapter on the one side. A roadbed digging machine characterized by being connected.

The undercutter adapter according to any one of claims 1 to 4 is provided on both sides of the undercutter in the longitudinal direction, and a work vehicle is connected to each of the undercutter adapters on both sides. A roadbed digging machine characterized by being