JP7591789B2

JP7591789B2 - Rail double-sided loading and unloading machine

Info

Publication number: JP7591789B2
Application number: JP2021122258A
Authority: JP
Inventors: 隆山下; 厚司垣内; 恵二金原; 誠二細川; 洋治山▲崎▼
Original assignee: Meiko Construction Co Ltd
Current assignee: Meiko Construction Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2024-11-29
Anticipated expiration: 2041-07-27
Also published as: JP2023018264A

Description

特許法第３０条第２項適用（１）本願発明に係る「レール両側積卸機」を６／１０開催の“令和３年度鉄道施設技術研究発表会保線部門（地区大会）”で発表した。（２）本願発明に係る「レール両側積卸機」を７／５開催の“第９回鉄道施設技術発表会”で発表した。（３）本願発明に係る「レール両側積卸機」を７／１３発行の‘交通新聞’で公開した。Application of Article 30, Paragraph 2 of the Patent Act (1) The "Rail Double-Sided Loading and Unloading Machine" of the present invention was presented at the "Railway Facilities Technology Research Presentation, Track Maintenance Division (Regional Conference) 2021" held on June 10th. (2) The "Rail Double-Sided Loading and Unloading Machine" of the present invention was presented at the "9th Railway Facilities Technology Presentation" held on July 5th. (3) The "Rail Double-Sided Loading and Unloading Machine" of the present invention was published in the "Kotsu Shimbun" newspaper on July 13th.

本発明は、交換用レールの積降ろしを行って交換用レールを運搬するレール両側積卸機に関する。 The present invention relates to a double-sided rail loading and unloading machine that loads and unloads replacement rails and transports the replacement rails.

レール両側積卸機として、例えば、レール両側積卸機に積み込むレールが左右どちらの位置に有っても容易に積み込み可能で、且つ、取り卸し場所の方向が左右どちらにでも容易に切り替え可能にするため、油圧等の昇降機構により、使用時は直立させ、収納時は回動軸部を中心にして、それぞれ独立して垂直状態から水平状態まで回動し、収納可能に設けた左右二本の支柱と、支柱の上端部にビーム保持部をそれぞれ設け、且つ、該ビームの両端部、及び、支柱上下ほぼ中程部に支持穴を設け、ターンバックル等の支持部材で支持し、支柱直立時にビームが支柱に対して直角に固着可能に設けたビームと、レールを昇降させるチェーンブロック等の搬送装置から成り、且つ、使用時の状況に応じて左右どちらからでもレール積み込み、及びレール取り卸し作業を可能にすることができるレール両側積卸機が提案されている（例えば、特許文献１参照。）。 As a rail double-sided loading and unloading machine, for example, a rail double-sided loading and unloading machine has been proposed that can easily load rails on either the left or right side, and can easily switch the direction of the unloading location to either the left or right side, so that it can be used to stand upright when in use and can rotate independently from a vertical state to a horizontal state around a rotating shaft when stored, using a hydraulic or other lifting mechanism, and a beam holder is provided at the upper end of each of the beams, with support holes provided at both ends of the beams and approximately halfway up and down, and supported by support members such as turnbuckles, so that the beam can be fixed at a right angle to the beams when the beams are upright, and a conveying device such as a chain block that raises and lowers the rails, and can load and unload rails from either the left or right side depending on the situation when used (see, for example, Patent Document 1).

実用新案公報第３１１６１０７号公報Utility Model Publication No. 3116107

しかし、上記特許文献１に記載のレール両側積卸機では、左右の支柱はそれぞれ１本ずつで、その１本の支柱を起立させてチェーンブロック等か設けられたビームを片持ち梁状態に支持するため、支柱上端の片側でビームを固定することになり、ビームのチェーブロックで重いレールを吊り上げた場合、バランス良くビームを支持できないという問題があった。 However, the rail double-side loading and unloading machine described in Patent Document 1 has one support column on each side, and this single support column is raised to support a beam attached to a chain block or the like in a cantilevered state. This means that the beam is fixed on one side of the upper end of the support column, and there is a problem that when a heavy rail is lifted by the chain block of the beam, the beam cannot be supported in a balanced manner.

また、上記特許文献１に記載の油圧シリンダー等の昇降機構によって支柱を起立させたり倒伏させるため、コストがかかるという問題もあった。 Another problem is that the pillars are raised and lowered using a lifting mechanism such as a hydraulic cylinder, as described in Patent Document 1, which is costly.

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、第１にはビームをバランス良く支持することができ、第２にはさらにコストも低減することができるレール両側積卸機を提供することを目的とする。 The present invention was developed to address these problems, and aims to provide a rail double-sided loading and unloading machine that can, first, support the beam in a well-balanced manner, and second, further reduce costs.

前記課題を解決するため、本発明に係るレール両側積卸機は、交換用レールを載せて線路の走行レール上を走行するレール運搬車本体と、前記レール運搬車本体の長手方向に間隔を空けて少なくとも２箇所設置され、前記交換用レールの積降ろしを行うクレーンが設けられた複数のレール積み降ろし機構体とを備え、前記複数のレール積み降ろし機構体は、それぞれ、前記走行レールを横切るように設けられ、前記クレーンがスライド可能に設けられたビームと、前記レール運搬車本体の左右両側それぞれに回転軸を介して走行レールの長手方向に起立および倒伏可能に設けられ、前記ビームを所定の高さで固定することによって前記ビームを前記レール運搬車本体の左右両側で門型状態またはレール運搬車本体の左右いずれか側から片持ち梁状態で支持する左右一対の可倒式タワー部とを備え、前記ビームの左右両側には、それぞれ、左右両側の前記左右一対の可倒式タワー部と固定するためのビーム支持ボルトが通されるボルト貫通孔が設けられており、前記左右一対の可倒式タワー部は、それぞれ、前記ビームを固定する箇所にナット部が設けられたナット側可倒式支柱と、前記ビーム支持ボルトが通されるボルト貫通孔が設けられ、前記ナット側可倒式支柱とは反対側から起立するボルト側可倒式支柱とを有し、前記ビームの左右両側にそれぞれ設けられた前記ボルト貫通孔の入口および出口側には、それぞれ、前後方向にそれぞれ先細の円錐台形面を有する環状の前後円錐台形凸部が設けられている一方、前記ナット側可倒式支柱の前記ナット部と、前記ボルト側可倒式支柱の前記ボルト貫通孔における前記ビームの対向側には、それぞれ、前記ビームの左右両側に設けられた前記前後円錐台形凸部の円錐台形面が嵌合する円環状のすり鉢状傾斜凹面を有するビーム支持ボルト用環状突起部が設けられており、前記ナット側可倒式支柱と前記ボルト側可倒式支柱とを起立させて前記ナット側可倒式支柱および前記ボルト側可倒式支柱それぞれの前記ビーム支持ボルト用環状突起部で前記ビームの左右両側それぞれの前記前後円錐台形凸部を挟むと共に、前記ビーム支持ボルトの軸部を前記ボルト側可倒式支柱の前記ボルト貫通孔から前記ナット側可倒式支柱の前記ナット部に通して締結することにより前記ビームを所定の高さに固定することを特徴とする。
また、本発明に係るレール両側積卸機では、前記左右一対の可倒式タワー部の基部には、それぞれ、車輪を有する走行部が設けられている一方、前記レール運搬車本体の上面には、前記左右一対の可倒式タワー部の走行部が走行するサブレールが前記走行レールの長手方向に設けられていることも特徴とする。
また、本発明に係るレール両側積卸機では、前記ナット側可倒式支柱および前記ボルト側可倒式支柱におけるそれぞれの前記ビーム支持ボルト用環状突起部の下方には、それぞれ、前記ビームを介さずに前記ナット側可倒式支柱と前記ボルト側可倒式支柱とを連結する補助ボルトが通る補助ボルト貫通孔を有する補助ボルト用環状突起部が設けられていることも特徴とする。
また、本発明に係るレール両側積卸機では、前記ビームの端部には、ターンバックルの上端部が連結される一方、前記前記ナット側可倒式支柱および前記ボルト側可倒式支柱それぞれの前記補助ボルト用環状突起部の補助ボルト貫通孔を通る前記補助ボルトには、前記ターンバックルの下端部が連結されることも特徴とする。
In order to solve the above problems, the rail both side loading and unloading machine of the present invention comprises a rail transport vehicle body that carries a replacement rail and travels on a running rail of a railway line, and a plurality of rail loading and unloading mechanisms that are installed at least in two locations spaced apart in the longitudinal direction of the rail transport vehicle body and are equipped with cranes for loading and unloading the replacement rail, and each of the plurality of rail loading and unloading mechanisms is provided with a beam on which the crane is slidably mounted and a rail support mechanism that supports the running rail via a rotating shaft on each of the left and right sides of the rail transport vehicle body. and a pair of left and right retractable tower sections that are arranged so as to be able to stand up and fall down in the direction of the rail transport vehicle body, and that support the beam in a gate-shaped state on both the left and right sides of the rail transport vehicle body or in a cantilever state from either the left or right side of the rail transport vehicle body by fixing the beam at a predetermined height, and on both the left and right sides of the beam, bolt through holes are provided through which beam support bolts are passed for fixing the beam to the pair of left and right retractable tower sections on both the left and right sides, and each of the pair of left and right retractable tower sections is provided with a nut-side retractable support column having a nut section provided at a location where the beam is fixed, and a front The nut side tiltable support has a bolt through hole through which the beam support bolt is passed, and a bolt side tiltable support rising from the opposite side to the nut side tiltable support, and an annular front and rear truncated cone-shaped protrusion having a tapered truncated cone-shaped surface in the front and rear direction is provided at the entrance and exit sides of the bolt through holes provided on both the left and right sides of the beam, respectively, while the nut part of the nut side tiltable support and the opposite side of the beam at the bolt through hole of the bolt side tiltable support have a truncated cone-shaped surface of the front and rear truncated cone-shaped protrusion provided on both the left and right sides of the beam, respectively. An annular protrusion for a beam support bolt is provided having a mating circular mortar-shaped inclined concave surface, and the nut side retractable support and the bolt side retractable support are raised to sandwich the front and rear truncated cone- shaped convex portions on both the left and right sides of the beam with the annular protrusions for the beam support bolt of the nut side retractable support and the bolt side retractable support, respectively, and the beam is fixed at a predetermined height by passing the shank of the beam support bolt through the bolt through hole of the bolt side retractable support and through the nut portion of the nut side retractable support and fastening it.
In addition, the rail double-side loading/unloading machine of the present invention is also characterized in that a running section having wheels is provided at the base of each of the pair of left and right retractable tower sections, while a sub-rail along which the running sections of the pair of left and right retractable tower sections run is provided on the upper surface of the rail transport vehicle body in the longitudinal direction of the running rail.
In addition, the rail double-side unloading machine of the present invention is also characterized in that below the respective annular protrusions for the beam support bolts on the nut side retractable support and the bolt side retractable support, annular protrusions for auxiliary bolts are provided having auxiliary bolt through holes through which auxiliary bolts pass that connect the nut side retractable support and the bolt side retractable support without going through the beam.
Furthermore, in the rail double-side loading/unloading machine of the present invention, an upper end of a turnbuckle is connected to the end of the beam, while a lower end of the turnbuckle is connected to the auxiliary bolt passing through the auxiliary bolt through-hole of the annular protrusion for the auxiliary bolt of each of the nut side tiltable support column and the bolt side tiltable support column.

本発明に係るレール両側積卸機では、左右一対の可倒式タワー部は、それぞれ、ビームを固定する箇所にナット部が設けられたナット側可倒式支柱と、ボルトが通されるボルト貫通孔が設けられ、ナット側可倒式支柱とは反対側から起立するボルト側可倒式支柱とを有し、ナット側可倒式支柱とボルト側可倒式支柱とを起立させてナット側可倒式支柱およびボルト側可倒式支柱の上部でビームの左右両側を挟むと共に、ボルトの軸部をボルト側可倒式支柱のボルト貫通孔からナット側可倒式支柱のナット部に通して締結することによりビームを所定の高さに固定する。
そのため、クレーンが設けられたビームは、ナット側可倒式支柱とボルト側可倒式支柱とで挟まれた状態で所定の高さで固定されるため、ビームをバランス良く支持することができる。 In the rail double-sided loading/unloading machine of the present invention, a pair of left and right retractable tower sections each have a nut side retractable support column with a nut portion provided at the point where the beam is fixed, and a bolt side retractable support column with a bolt through hole through which a bolt is passed and standing up from the opposite side to the nut side retractable support column. The nut side retractable support column and the bolt side retractable support column are raised to sandwich the left and right sides of the beam with the upper parts of the nut side retractable support column and the bolt side retractable support column, and the shaft portion of the bolt is passed through the bolt through hole of the bolt side retractable support column and tightened to fix the beam at a predetermined height.
Therefore, the beam on which the crane is mounted is fixed at a predetermined height while being sandwiched between the nut side retractable support column and the bolt side retractable support column, thereby enabling the beam to be supported in a well-balanced manner.

（ａ），（ｂ）それぞれ本発明に係る実施形態のレール両側積卸機を３台連結した状態を示す平面図、正面図である。1A and 1B are a plan view and a front view, respectively, showing a state in which three rail double-side unloading machines according to an embodiment of the present invention are connected together. 本発明に係る実施形態のレール両側積卸機の側面図である。FIG. 2 is a side view of the rail double-side unloading machine according to the embodiment of the present invention. 本発明に係る実施形態のレール両側積卸機の正面図である。FIG. 2 is a front view of the rail double-side unloading machine according to the embodiment of the present invention. 本発明に係る実施形態のレール両側積卸機におけるビームの部分拡大断面図である。FIG. 2 is a partially enlarged cross-sectional view of a beam in the rail double-side unloading machine according to the embodiment of the present invention. （ａ），（ｂ）それぞれ図２におけるＡ部分、Ｂ部分の部分拡大断面図である。3A and 3B are enlarged cross-sectional views of parts A and B in FIG. 2, respectively. 本発明に係る実施形態のレール両側積卸機における支柱の左右切替手順を示す図であって、倒伏させていたナット側可倒式支柱を起こし、凹前後円錐台形凸部が合うようにビームを上下させて位置決めする状態を示す側面図である。FIG. 13 is a side view showing the procedure for switching the left and right support columns in a rail-side loading/unloading machine according to an embodiment of the present invention, in which the nut-side collapsible support column that was laid down is raised and the beam is moved up and down to position the concave front and rear truncated cone-shaped convex portions so that they align. 本発明に係る実施形態のレール両側積卸機における支柱の左右切替手順を示す図であって、倒伏させていたボルト側可倒式支柱を起こしている状態を示す側面図である。FIG. 13 is a side view showing the procedure for switching the support from left to right in the rail double-side unloading machine of the embodiment of the present invention, showing the state in which the collapsed bolt-side retractable support is being raised. 本発明に係る実施形態のレール両側積卸機における支柱の左右切替手順を示す図であって、倒伏させていたボルト側可倒式支柱を起こし、凹前後円錐台形凸部を合わせてボルトを挿入しナット側可倒式支柱と共にビームを挟んで固定する状態を示す部分拡大側面図である。FIG. 13 is a partially enlarged side view showing the procedure for switching the left and right supports in a rail double-side unloading machine according to an embodiment of the present invention, in which the bolt-side retractable support that was laid down is raised, the front and rear concave truncated convex portions are aligned, a bolt is inserted, and the beam is clamped and fixed together with the nut-side retractable support. 本発明に係る実施形態のレール両側積卸機における支柱の左右切替手順を示す図であって、新たに起立させた支柱側の作業用ステップを出してターンバックルの上端部をビームに取付けている状態を示す側面図である。FIG. 13 is a side view showing the procedure for switching the support from left to right in an embodiment of a rail double-sided loading/unloading machine according to the present invention, showing the state in which the work step on the newly erected support side is extended and the upper end of the turnbuckle is attached to the beam. 本発明に係る実施形態のレール両側積卸機における支柱の左右切替手順を示す図であって、新たに起立させた支柱側の作業用ステップを出してターンバックルの下端部を支柱に取付けている状態を示す側面図である。FIG. 13 is a side view showing the procedure for switching the support from left to right in an embodiment of a rail double-sided loading/unloading machine according to the present invention, showing the state in which the work step on the newly erected support side is extended and the lower end of the turnbuckle is attached to the support. 本発明に係る実施形態のレール両側積卸機における支柱の左右切替手順を示す図であって、今まで起立させていた支柱側の作業用ステップを出してターンバックルを取り外した状態を示す側面図である。FIG. 13 is a side view showing the procedure for switching the support from left to right in an embodiment of a rail double-sided loading/unloading machine according to the present invention, in which the work step on the support side that was previously upright has been extended and the turnbuckle has been removed. 本発明に係る実施形態のレール両側積卸機における支柱の左右切替手順を示す図であって、今まで起立させていた支柱側のナット側可倒式支柱およびボルト側可倒式支柱を倒し、さらに作業用ステップを格納した状態を示す側面図である。FIG. 13 is a side view showing the procedure for switching the left and right supports in a rail double-side loading and unloading machine according to an embodiment of the present invention, in which the nut-side retractable support and bolt-side retractable support on the support side, which were previously upright, have been retracted, and the work step has been stored.

以下、本発明に係る実施形態のレール両側積卸機１を、添付図面を参照しながら詳細に説明する。尚、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。 The rail double-side loading and unloading machine 1 according to the embodiment of the present invention will be described in detail below with reference to the attached drawings. Note that the embodiment described below is merely one example of the present invention, and the present invention is not limited to the embodiment described below. It can be modified as appropriate within the scope of the technical concept of the present invention.

＜実施形態のレール両側積卸機１の構成＞
実施形態のレール両側積卸機１は、機動車（図示せず。）で牽引したり、あるいは機動車（図示せず。）で後ろから押して線路の軌道レールＲ上を走行するもので、図１（ａ），（ｂ）に示すように、交換用レール３を載せて軌道レールＲ上を走行するレール運搬車本体１１と、レール運搬車本体１１の上で交換用レール３の積降ろしを行うクレーン１２ｃが設けられた３基（３台）のレール積み降ろし機構体１２と、レール運搬車本体１１の長手方向に間隔を空けて３箇所設置され、３基（３台）のレール積み降ろし機構体１２それぞれがレール運搬車本体１１の長手方向に移動するサブレール１３ａ１～１３ｃ１が設けられたサブレール構成体１３ａ，１３ｂ，１３ｃとを備えて構成される。 <Configuration of rail both side unloading machine 1 of embodiment>
The rail both-side loading/unloading machine 1 of the embodiment is towed by a mobile vehicle (not shown) or pushed from behind by a mobile vehicle (not shown) to run on the track rail R of the railway line, and as shown in Figures 1 (a) and (b), is configured to include a rail transport vehicle main body 11 that carries a replacement rail 3 and runs on the track rail R, three (three units) rail loading/unloading mechanisms 12 provided with a crane 12c that loads and unloads the replacement rail 3 on the rail transport vehicle main body 11, and sub-rail components 13a, 13b, and 13c that are installed at three locations spaced apart in the longitudinal direction of the rail transport vehicle main body 11 and each of the three (three units) rail loading/unloading mechanisms 12 is provided with sub-rails 13a1 to 13c1 that move in the longitudinal direction of the rail transport vehicle main body 11.

尚、交換用レール３とは、線路上の軌道用レールＲと区別するための名称で、線路から取外した旧い軌道用レールや線路に新たに敷設する新しい軌道用レールのことで、例えば、２５０００ｍｍ（２５ｍ）の長さを有している。 The replacement rail 3 is a name used to distinguish it from the track rail R on the track, and refers to the old track rail removed from the track or the new track rail to be newly laid on the track, and has a length of, for example, 25,000 mm (25 m).

（レール運搬車本体１１）
レール運搬車本体１１は、交換用レール３を積載しながら線路の軌道レールＲ上を走行するもので、図１（ａ），（ｂ）に示すように、下側面側に軌道レールＲ上を走行する複数の車輪１１ａが設けられると共に、機動車（図示せず。）等と連結するための機関車用連結部１１ｂ等が設けられた運搬車で、交換用レール３を運搬するため、例えば、１５ｍ～２０ｍ前後の長さを有している。 (Rail transport vehicle body 11)
The rail transport vehicle body 11 runs on the track rail R of the railway line while carrying the replacement rail 3. As shown in FIGS. 1(a) and 1(b), the rail transport vehicle body 11 is provided with a plurality of wheels 11a that run on the track rail R on its underside, and is also provided with a locomotive coupling portion 11b for coupling with a motor car (not shown) or the like. In order to transport the replacement rail 3, the rail transport vehicle body 11 has a length of, for example, about 15 m to 20 m.

（レール積み降ろし機構体１２）
３基（３台）のレール積み降ろし機構体１２は、それぞれ、レール運搬車本体１１上面のサブレール構成体１３ａ，１３ｂ，１３ｃの上に移動可能に設けられ、交換用レール３の積降ろしを行うもので、クレーン１２ｃが設けられ水平方向に延びるビーム１２ａと、ビーム１２ａを支持する左右一対の可倒式タワー部１２Ｌ，１２Ｒと、走行部１２ｂ，１２ｂと、クレーン１２ｃ等を備えて構成される。 (Rail loading/unloading mechanism 12)
The three (3 units) rail loading/unloading mechanisms 12 are each movably mounted on sub-rail structures 13a, 13b, 13c on the upper surface of the rail transport vehicle main body 11 and are used to load and unload replacement rails 3. They are configured with a beam 12a extending horizontally and provided with a crane 12c, a pair of left and right collapsible tower sections 12L, 12R supporting the beam 12a, running sections 12b, 12b, the crane 12c, etc.

（ビーム１２ａ）
ビーム１２ａは、フランジおよびウエブを有するＨ型鋼等を使用して走行レールＲ，Ｒを横切るように設けられ、ビーム１２ａの下側にチェーブロック式や電動式等のクレーン１２ｃがスライド可能に設けられて構成されている。 (Beam 12a)
The beam 12a is arranged to cross the traveling rails R, R using an H-shaped steel or the like having a flange and a web, and a crane 12c, such as a chain lock type or an electric type, is slidably mounted on the underside of the beam 12a.

また、ビーム１２ａのウエブの左右両側には、図４等に示すように、それぞれ、前後方向にそれぞれ先細の円錐台形面１２ａ１１を有する前後円錐台形凸部１２ａ１，１２ａ１がそれぞれ設けられており、その左右それぞれの前後円錐台形凸部１２ａ１，１２ａ１には、左右両側の左右一対の可倒式タワー部１２Ｌ，１２Ｒをそれぞれ構成するナット側可倒式支柱１２Ｌ１，１２Ｒ１とボルト側可倒式支柱１２Ｌ２，１２Ｒ２の上部によって挟まれた状態で固定するためのビーム支持ボルト１４が前後方向に貫通して通されるボルト貫通孔１２ａ１２，１２ａ１２が設けられている。 As shown in FIG. 4 and other figures, the left and right sides of the web of the beam 12a are provided with front and rear truncated cone-shaped protrusions 12a1, 12a1 each having a tapered truncated cone-shaped surface 12a11 in the front-rear direction, and the left and right front and rear truncated cone-shaped protrusions 12a1, 12a1 are provided with bolt through holes 12a12, 12a12 through which the beam support bolts 14 are passed in the front-rear direction to secure the beams in a sandwiched state between the upper parts of the nut-side retractable columns 12L1, 12R1 and the bolt-side retractable columns 12L2, 12R2 that respectively constitute the pair of left and right retractable tower sections 12L, 12R on the left and right sides.

そして、ビーム１２ａには、交換用レール３の積降ろしを行うチェーブロック式や電動式等のクレーン１２ｃがビーム１２ａの長手方向、つまり走行レールＲ，Ｒを横切る方向に移動可能に設けられ、交換用レール３をレール運搬車本体１１の上から現場の走行レールＲ，Ｒ等へあるいはその逆に積み下ろしできるように構成している。 The beam 12a is provided with a crane 12c, such as a chain lock type or an electric type, that loads and unloads the replacement rails 3 and is movable in the longitudinal direction of the beam 12a, i.e., in the direction crossing the running rails R, R, so that the replacement rails 3 can be loaded and unloaded from the rail transport vehicle body 11 onto the running rails R, R at the site, or vice versa.

（可倒式タワー部１２Ｌ，１２Ｒ）
左右の可倒式タワー部１２Ｌ，１２Ｒは、それぞれ、ビーム１２ａに対し前方側に設けられるナット側可倒式支柱１２Ｌ１，１２Ｒ１と、ビーム１２ａに対し後方側に設けられ、ビーム１２ａを介しナット側可倒式支柱１２Ｌ１，１２Ｒ１とは反対側から起立するボルト側可倒式支柱１２Ｌ２，１２Ｒ２とを有する。 (Foldable tower section 12L, 12R)
The left and right retractable tower sections 12L, 12R are respectively provided with nut-side retractable columns 12L1, 12R1 on the front side of the beam 12a and nut-side retractable columns 12L1, 12R1 on the rear side of the beam 12a. The retractable columns 12L1, 12R1 have bolt side retractable columns 12L2, 12R2 standing up from the opposite side.

ナット側可倒式支柱１２Ｌ１，１２Ｒ１は、それぞれ、上端部におけるビーム１２ａを固定する箇所にビーム支持ボルトのネジ部（軸部）が螺合する雌ネジ部を有するナット部１２Ｌ１１，１２Ｒ１１（図５（ａ）参照。）が設けられている一方、下端部は、それぞれ、ビーム１２ａの幅だけで離間して、レール運搬車本体１１に前方側に向かって起立状態から倒伏状態までの９０度だけ回動可能に連結されて構成されている。 The nut-side collapsible supports 12L1, 12R1 each have a nut portion 12L11, 12R11 (see FIG. 5(a)) with a female threaded portion into which the threaded portion (shaft portion) of the beam support bolt screws into the upper end portion where the beam 12a is fixed, while the lower ends are each spaced apart by the width of the beam 12a and connected to the rail transport vehicle main body 11 so that they can rotate 90 degrees from an upright position to a laid-down position toward the front side.

また、ナット側可倒式支柱１２Ｌ１，１２Ｒ１それぞれのナット部１２Ｌ１１，１２Ｒ１１の入口側、つまりビーム１２ａ側周囲には、図５（ａ）等に示すようにビーム１２ａの左右両側の前後円錐台形凸部１２ａ１，１２ａ１の円錐台形面１２ａ１１が当接するすり鉢状のすり鉢状傾斜凹面１２Ｌ１２ａ，１２Ｒ１２ａを有するビーム支持ボルト用環状突起部１２Ｌ１２，１２Ｒ１２がそれぞれ設けられている。尚、図５（ａ）では、ナット側可倒式支柱１２Ｒ１のナット部１２Ｒ１１周辺のみを示しているが、ナット側可倒式支柱１２Ｌ１のナット部１２Ｌ１１も同様に構成されている。 In addition, on the inlet side of the nut parts 12L11, 12R11 of the nut side retractable columns 12L1, 12R1, i.e., around the beam 12a side, there are provided annular projections 12L12, 12R12 for beam support bolts, each having a cone-shaped inclined concave surface 12L12a, 12R12a against which the cone-shaped surfaces 12a11 of the front and rear cone-shaped convex parts 12a1, 12a1 on both the left and right sides of the beam 12a abut, as shown in FIG. 5(a) etc. Note that, although FIG. 5(a) shows only the periphery of the nut part 12R11 of the nut side retractable column 12R1, the nut part 12L11 of the nut side retractable column 12L1 is configured in the same way.

尚、図２では、図上、奥側となるナット側可倒式支柱１２Ｌ１は、起立してボルト側可倒式支柱１２Ｌ２と共にビーム１２ａを片持ち状態で示している一方、手前側となるナット側可倒式支柱１２Ｒ１は、倒伏状態を示している。また、図３の正面図では、正面視、左側で表側となるナット側可倒式支柱１２Ｌ１は、起立してボルト側可倒式支柱１２Ｌ２と共にビーム１２ａを片持ち状態で示している一方、右側となるナット側可倒式支柱１２Ｒ１は、倒伏状態を示している。 In FIG. 2, the nut side retractable support 12L1, which is the rear side of the figure, is shown standing up and holding the beam 12a in a cantilevered state together with the bolt side retractable support 12L2, while the nut side retractable support 12R1, which is the front side, is shown in a lying state. Also, in the front view of FIG. 3, the nut side retractable support 12L1, which is the front side on the left side when viewed from the front, is shown standing up and holding the beam 12a in a cantilevered state together with the bolt side retractable support 12L2, while the nut side retractable support 12R1, which is the right side, is shown in a lying state.

ボルト側可倒式支柱１２Ｌ２，１２Ｒ２は、それぞれ、上端部におけるビーム１２ａを固定する箇所にビーム支持ボルト１４が通されるボルト貫通孔１２Ｌ２１，１２Ｒ２１（図５（ｂ）参照。）が設けられている一方、下端部は、ナット側可倒式支柱１２Ｌ１，１２Ｒ１からそれぞれビーム１２ａの幅だけで離間して、レール運搬車本体１１に後方側に向かって起立状態から倒伏状態までの９０度だけ回動可能に連結されて構成されている。 The bolt-side retractable columns 12L2, 12R2 each have a bolt through hole 12L21, 12R21 (see FIG. 5(b)) through which the beam support bolt 14 passes at the location at the upper end where the beam 12a is fixed, while the lower end is separated from the nut-side retractable columns 12L1, 12R1 by the width of the beam 12a, respectively, and is connected to the rail transport vehicle body 11 so that it can rotate 90 degrees from an upright position to a laid-down position toward the rear.

また、ボルト側可倒式支柱１２Ｌ２，１２Ｒ２それぞれのボルト貫通孔１２Ｌ２１，１２Ｒ２１の出口側、つまりビーム１２ａ側周囲には、図５（ｂ）等に示すようにビーム１２ａの左右両側の前後円錐台形凸部１２ａ１，１２ａ１の円錐台形面１２ａ１１が当接するすり鉢状のすり鉢状傾斜凹面１２Ｌ２３，１２Ｒ２３を有するビーム支持ボルト用環状突起部１２Ｌ２２，１２Ｒ２２がそれぞれ設けられている。尚、図５（ｂ）では、ボルト側可倒式支柱１２Ｒ２のボルト貫通孔１２Ｒ２１周辺を示しているが、ボルト側可倒式支柱１２Ｌ２のボルト貫通孔１２Ｌ２１周辺も同様に構成されている。 In addition, on the exit side of the bolt through holes 12L21, 12R21 of the bolt side retractable columns 12L2, 12R2, i.e., around the beam 12a side, there are provided annular projections 12L22, 12R22 for beam support bolts, each having a cone-shaped inclined concave surface 12L23, 12R23 against which the cone-shaped surfaces 12a11 of the front and rear cone-shaped convex portions 12a1, 12a1 on both the left and right sides of the beam 12a abut, as shown in FIG. 5(b) and other figures. Note that FIG. 5(b) shows the area around the bolt through hole 12R21 of the bolt side retractable column 12R2, but the area around the bolt through hole 12L21 of the bolt side retractable column 12L2 is configured in the same way.

尚、図２では、図上、奥側となるボルト側可倒式支柱１２Ｌ２は、起立してナット側可倒式支柱１２Ｌ１と共にビーム１２ａを片持ち状態で示している一方、手前側となるボルト側可倒式支柱１２Ｒ２は、作業員が手作業で起こしている状態を示している。また、図３の正面図では、正面視、左側でかつ裏側となるボルト側可倒式支柱１２Ｌ２は、起立してナット側可倒式支柱１２Ｌ１と共にビーム１２ａを片持ち状態で示している一方、右側となるボルト側可倒式支柱１２Ｒ２は、倒伏状態を示している。 In FIG. 2, the bolt-side retractable support 12L2 at the rear side is shown standing up and holding the beam 12a in a cantilevered state together with the nut-side retractable support 12L1, while the bolt-side retractable support 12R2 at the front side is shown being manually raised by an operator. In addition, in the front view of FIG. 3, the bolt-side retractable support 12L2 at the left side and rear side when viewed from the front is shown standing up and holding the beam 12a in a cantilevered state together with the nut-side retractable support 12L1, while the bolt-side retractable support 12R2 at the right side is shown in a fallen state.

さらに、ナット側可倒式支柱１２Ｌ１，１２Ｒ１およびボルト側可倒式支柱１２Ｌ２，１２Ｒ２におけるそれぞれのビーム支持ボルト用環状突起部１２Ｌ１２，１２Ｌ２２、１２Ｒ１２，１２Ｒ２２の下方には、それぞれ、図２等に示すようにビーム１２ａを介さずにナット側可倒式支柱１２Ｌ１，１２Ｒ１とボルト側可倒式支柱１２Ｌ２，１２Ｒ２とを連結する補助ボルト１５が通る補助ボルト貫通孔を有する補助ボルト用環状突起部１２Ｌ１３，１２Ｌ２３、１２Ｒ１３，１２Ｒ２３が設けられていると共に、ビーム支持ボルト用環状突起部１２Ｌ１２，１２Ｌ２２、１２Ｒ１２，１２Ｒ２２と補助ボルト用環状突起部１２Ｌ１３，１２Ｌ２３、１２Ｒ１３，１２Ｒ２３との間のほぼ中間の位置には、それぞれ、作業員がナット側可倒式支柱１２Ｌ１，１２Ｒ１およびボルト側可倒式支柱１２Ｌ２，１２Ｒ２を起立させたり倒伏させる際に掴む把持部１２Ｌ１４，１２Ｌ２４、１２Ｒ１４，１２Ｒ２４が設けられている。 Further, below the annular projections 12L12, 12L22, 12R12, 12R22 for the beam support bolts of the nut side retractable columns 12L1, 12R1 and the bolt side retractable columns 12L2, 12R2, there are annular projections 12L13, 12L23 for auxiliary bolts, each having an auxiliary bolt through hole through which an auxiliary bolt 15 passes, which connects the nut side retractable columns 12L1, 12R1 and the bolt side retractable columns 12L2, 12R2 without going through the beam 12a, as shown in FIG. 2 etc. 12R13, 12R23 are provided, and at approximately the midpoint between the beam support bolt annular protrusions 12L12, 12L22, 12R12, 12R22 and the auxiliary bolt annular protrusions 12L13, 12L23, 12R13, 12R23, grippers 12L14, 12L24, 12R14, 12R24 are provided for the operator to grasp when erecting or lowering the nut side retractable support 12L1, 12R1 and the bolt side retractable support 12L2, 12R2.

（走行部１２ｂ，１２ｂ）
走行部１２ｂ，１２ｂは、それぞれ、複数の車輪１２ｂ１，１２ｂ１が設けられ、レール運搬車本体１１の上面に設けられたサブレール構成体１３ａ，１３ｂ，１３ｃのサブレール１３ａ１～１３ｃ１に従って走行するもので、上面側には可倒式タワー部１２Ｌ，１２Ｒを構成するナット側可倒式支柱１２Ｌ１，１２Ｌ２とボルト側可倒式支柱１２Ｌ２，１２Ｒ２の基部（下端部）とがそれぞれ前後方向に９０度回動可能に取り付けられ、倒伏状態と起立状態とになるように構成されている。 (Running portions 12b, 12b)
The running sections 12b, 12b are each provided with a plurality of wheels 12b1, 12b1, and run along the sub-rails 13a1 to 13c1 of the sub-rail structures 13a, 13b, 13c provided on the upper surface of the rail transport vehicle main body 11, and the bases (lower ends) of the nut side tiltable pillars 12L1, 12L2 and the bolt side tiltable pillars 12L2, 12R2 that constitute the tiltable tower sections 12L, 12R are each attached to the upper surface so as to be rotatable 90 degrees in the forward/backward direction, and are configured to be in a laid-down state and an upright state.

（クレーン１２ｃ）
クレーン１２ｃは、図３等に示すようにレール運搬車本体１１の上で交換用レール３を吊り上げてビーム１２ａに沿って移動して交換用レール３の積降ろしを行うもので、クレーン本体１２ｃ１と、フック１２ｃ２と、リモコン１２ｃ３等を備えた周知のものである。 (Crane 12c)
As shown in Figure 3 etc., the crane 12c hoists the replacement rail 3 above the rail transport vehicle body 11 and moves along the beam 12a to load and unload the replacement rail 3. It is a well-known device that includes a crane body 12c1, a hook 12c2, a remote control 12c3, etc.

（サブレール構成体１３ａ，１３ｂ，１３ｃ）
サブレール構成体１３ａ，１３ｂ，１３ｃは、それぞれ、図１（ａ），（ｂ）に示すようにレール運搬車本体１１の上面に所定間隔を空けて設けられるもので、レール運搬車本体１１の長手方向に可倒式タワー部１２Ｌ，１２Ｒの走行部１２ｂ，１２ｂが走行するサブレール１３ａ１，１３ａ１、１３ｂ１，１３ｂ１，１３ｃ１，１３ｃ１が設けられていると共に、レール運搬車本体１１の短手方向にサブレール１３ａ１，１３ａ１、１３ｂ１，１３ｂ１，１３ｃ１，１３ｃ１間の間隔を保持するサブレール間隔保持鋼１３ａ２，１３ｂ２，１３ｃ２が設けられている。 (Sub-rail structures 13a, 13b, 13c)
The sub-rail components 13a, 13b, 13c are respectively arranged at a predetermined interval on the upper surface of the rail transport vehicle body 11 as shown in Figures 1(a) and (b). Sub-rails 13a1, 13a1, 13b1, 13b1, 13c1, 13c1 along which the running sections 12b, 12b of the collapsible tower sections 12L, 12R run are provided in the longitudinal direction of the rail transport vehicle body 11, and sub-rail spacing retaining steels 13a2, 13b2, 13c2 which maintain the spacing between the sub-rails 13a1, 13a1, 13b1, 13b1, 13c1, 13c1 are provided in the lateral direction of the rail transport vehicle body 11.

尚、サブレール構成体１３ａ，１３ｂ，１３ｃの内、中央のレール積み降ろし機構体１３ｂのサブレール１３ａ２の長さは、前後のレール積み降ろし機構体サブレール１３ａ１，１３ａ３の長さよりも長く構成しており、積み下ろす交換用レール３の長さや積み下ろす現場等に応じてレール運搬車本体１１における３基（３台）のレール積み降ろし機構体１２をそれぞれ最適な位置に移動できるように構成している。 Of the sub-rail components 13a, 13b, and 13c, the length of the sub-rail 13a2 of the central rail loading/unloading mechanism 13b is longer than the lengths of the front and rear rail loading/unloading mechanism sub-rails 13a1 and 13a3, so that the three (three) rail loading/unloading mechanisms 12 on the rail transport vehicle main body 11 can be moved to the optimal positions depending on the length of the replacement rails 3 to be unloaded and the site of unloading, etc.

＜実施形態のレール両側積卸機１における可倒式タワー部１２Ｌ，１２Ｒの切替方法＞
次に、以上のように構成された本発明に係る実施形態のレール両側積卸機１における可倒式タワー部１２Ｌ，１２Ｒの切替方法について説明する。 <Method of switching the retractable tower sections 12L, 12R in the rail-side unloading machine 1 according to the embodiment>
Next, a method for switching between the retractable tower sections 12L, 12R in the rail-side unloading machine 1 according to the embodiment of the present invention configured as described above will be described.

例えば、図２および図３に示すように、図２における側面視、奥側、つまり図３における正面視、左側の可倒式タワー部１２Ｌを構成するナット側可倒式支柱１２Ｌ１およびボルト側可倒式支柱１２Ｌ２が起立してビーム１２ａを図３に示すように片持ち梁状態で支持しているものとし、ビーム１２ａを図２における側面視、手前側、つまり図３における正面視、右側の可倒式タワー部１２Ｒでの片持ち梁状態での支持への切り替え方法について説明する。 For example, as shown in Figures 2 and 3, the nut-side retractable support column 12L1 and the bolt-side retractable support column 12L2 that constitute the left-side retractable tower section 12L in the side view and rear side in Figure 2, i.e., when viewed from the front in Figure 3, are raised to support the beam 12a in a cantilever state as shown in Figure 3, and a method for switching the beam 12a to support in a cantilever state by the right-side retractable tower section 12R in the side view and front side in Figure 2, i.e., when viewed from the front in Figure 3, will be described.

まず、図６に示すように、作業員は、倒伏状態である図３における正面視、右側の可倒式タワー部１２Ｒのナット側可倒式支柱１２Ｒ１を起こすと共に、ビーム１２ａの右側を上下動させて、ビーム１２ａの右側である可倒式タワー部１２Ｒ側の前後円錐台形凸部１２ａ１（図４参照。）が、ナット側可倒式支柱１２Ｒ１のビーム支持ボルト用環状突起部１２Ｒ１２のすり鉢状傾斜凹面１２Ｒ１２ａ（図５（ａ）参照。）に嵌合、つまり収まるように位置決めし、下部のターンバックル１２Ｒ１４を連結すると共に締め付けてナット側可倒式支柱１２Ｒ１が９０度で起立して倒伏しないように固定する。 First, as shown in Figure 6, the worker raises the nut-side retractable support 12R1 of the right-side retractable tower section 12R in the collapsed state as viewed from the front in Figure 3, and moves the right side of the beam 12a up and down to position the front and rear truncated cone-shaped convex portion 12a1 (see Figure 4) on the right side of the beam 12a on the retractable tower section 12R side so that it fits into the mortar-shaped inclined concave surface 12R12a (see Figure 5(a)) of the ring-shaped protrusion portion 12R12 for the beam support bolt of the nut-side retractable support 12R1, and then connects and tightens the lower turnbuckle 12R14 to fix the nut-side retractable support 12R1 so that it stands at 90 degrees and does not collapse.

ビーム１２ａの右側の前後円錐台形凸部１２ａ１（図４参照。）が、ナット側可倒式支柱１２Ｒ１のすり鉢状のすり鉢状傾斜凹面１２Ｒ１２ａ（図５（ａ）参照。）に嵌合すると、ビーム１２ａの右側の前後円錐台形凸部１２ａ１のボルト貫通孔１２ａ１２（図４参照。）と、ナット側可倒式支柱１２Ｒ１のナット部１２Ｒ１１の雌ネジ孔が一致することになる。 When the front and rear truncated cone-shaped protrusions 12a1 (see Figure 4) on the right side of the beam 12a are fitted into the cone-shaped inclined concave surface 12R12a (see Figure 5(a)) of the nut side retractable support 12R1, the bolt through holes 12a12 (see Figure 4) of the front and rear truncated cone-shaped protrusions 12a1 on the right side of the beam 12a and the female screw hole of the nut portion 12R11 of the nut side retractable support 12R1 are aligned.

次に、作業員は、図７に示すように、倒伏状態である図３における正面視、右側の可倒式タワー部１２Ｒのボルト側可倒式支柱１２Ｒ２を起こすと共に、ビーム１２ａの右側である可倒式タワー部１２Ｒ側の前後円錐台形凸部１２ａ１（図４参照。）が、ボルト側可倒式支柱１２Ｒ２のすり鉢状のすり鉢状傾斜凹面１２Ｒ２３に嵌合、つまり収まるように位置決めする。 Next, as shown in Figure 7, the worker raises the bolt-side retractable support column 12R2 of the right-side retractable tower section 12R, which is in the collapsed state when viewed from the front in Figure 3, and positions it so that the front and rear truncated cone-shaped convex portion 12a1 (see Figure 4) on the right side of the beam 12a on the retractable tower section 12R side fits into, or fits within, the cone-shaped inclined concave surface 12R23 of the bolt-side retractable support column 12R2.

この位置決めにより、ビーム１２ａの右側の前後円錐台形凸部１２ａ１のボルト貫通孔１２ａ１２（図４参照。）と、ボルト側可倒式支柱１２Ｒ２のボルト貫通孔１２Ｒ２１とが一致することになる。尚、この場合には、先に、ビーム１２ａの右側である可倒式タワー部１２Ｒ側の前後円錐台形凸部１２ａ１が、ナット側可倒式支柱１２Ｒ１のすり鉢状のすり鉢状傾斜凹面１２Ｒ１２ａに嵌合、つまり収まるように位置決めしているので、それほどビーム１２ａを上下動する必要はない。 This positioning ensures that the bolt through-holes 12a12 (see Figure 4) of the front and rear truncated cone-shaped protrusions 12a1 on the right side of the beam 12a are aligned with the bolt through-holes 12R21 of the bolt-side retractable support 12R2. In this case, the front and rear truncated cone-shaped protrusions 12a1 on the retractable tower section 12R side, which is the right side of the beam 12a, have already been positioned to fit into, or be accommodated in, the cone-shaped inclined concave surface 12R12a of the nut-side retractable support 12R1, so there is no need to move the beam 12a up and down that much.

そして、位置決めの完了後、図８等に示すように、ビーム支持ボルト１４の軸部（ネジ部）をボルト側可倒式支柱１２Ｒ２のボルト貫通孔１２Ｒ２１（図５（ｂ）参照。）から通して、ビーム１２ａの前後円錐台形凸部１２ａ１のボルト貫通孔１２ａ１２（図４参照。）を介してビーム支持ボルト１４の軸部（ネジ部）をナット側可倒式支柱１２Ｒ１のナット部１２Ｒ１１の雌ネジ孔に螺合してビーム１２ａの右側上端部をビーム右側の可倒式タワー部１２Ｒに固定し、下部のターンバックル１２Ｒ２４を締め付けてボルト側可倒式支柱１２Ｒ２が倒伏しないように固定する。 After completing the positioning, as shown in FIG. 8 etc., the shaft (threaded portion) of the beam support bolt 14 is passed through the bolt through hole 12R21 (see FIG. 5(b)) of the bolt side retractable support 12R2, and the shaft (threaded portion) of the beam support bolt 14 is screwed into the female threaded hole of the nut portion 12R11 of the nut side retractable support 12R1 via the bolt through hole 12a12 (see FIG. 4) of the front and rear truncated cone-shaped convex portion 12a1 of the beam 12a to fix the upper right end portion of the beam 12a to the retractable tower portion 12R on the right side of the beam, and the lower turnbuckle 12R24 is tightened to fix the bolt side retractable support 12R2 so that it does not collapse.

尚、この状態は、ビーム１２ａの左右両端は、それぞれ、左側の可倒式タワー部１２Ｌと右側の可倒式タワー部１２Ｒの双方で支持したことになる。 In this state, the left and right ends of the beam 12a are supported by both the left-side retractable tower section 12L and the right-side retractable tower section 12R, respectively.

次に、作業員は、図９に示すように、図３における正面視、右側である新たに起立させた可倒式タワー部１２Ｒ基部の格納式ステップ１２ｂ２を起こしてそこに乗り、ターンバックル１２Ｒ１５の上端部をビーム１２ａの右側端部に連結して吊り下げ、次いで図１０に示すようにターンバックル１２Ｒ１５の下端部のボルト孔が可倒式タワー部１２Ｒ中間部のボルト孔に合うように調整して、そのボルト孔に補助ボルト１５を通してターンバックル１２Ｒ１５の下端部を補助ボルト１５に通して固定する。 Next, as shown in Figure 9, the worker raises the retractable step 12b2 of the newly erected base of the collapsible tower section 12R, which is on the right side of the front view in Figure 3, and stands on it, connecting the upper end of the turnbuckle 12R15 to the right end of the beam 12a and suspending it, and then, as shown in Figure 10, adjusts the bolt hole at the lower end of the turnbuckle 12R15 so that it matches the bolt hole in the middle part of the collapsible tower section 12R, passes the auxiliary bolt 15 through the bolt hole, and secures the lower end of the turnbuckle 12R15 through the auxiliary bolt 15.

次に、作業員は、図１１に示すように、図３における正面視、左側である以前から起立させていた可倒式タワー部１２Ｌ基部の格納式ステップ１２ｂ２を起こしてそこに乗り、可倒式タワー部１２Ｌの中間部とビーム１２ａの左側端部とを支持していたターンバックル１２Ｒ２５を取り外すと共に、可倒式タワー部１２Ｌの上端部とビーム１２ａの左側とを固定してたビーム支持ボルト１４を抜き、さらに図１２に示すように可倒式タワー部１２Ｌを構成するナット側可倒式支柱１２Ｌ１およびボルト側可倒式支柱１２Ｌ２をそれぞれ前側または後側に倒伏して、その後、可倒式タワー部１２Ｌ基部の格納式ステップ１２ｂ２を折り畳んで格納する。 Next, as shown in FIG. 11, the worker stands on the retractable step 12b2 at the base of the retractable tower section 12L, which was previously erected on the left side of the front view in FIG. 3, removes the turnbuckle 12R25 supporting the middle part of the retractable tower section 12L and the left end part of the beam 12a, removes the beam support bolt 14 that secures the upper end part of the retractable tower section 12L to the left side of the beam 12a, and then, as shown in FIG. 12, collapses the nut side retractable support column 12L1 and the bolt side retractable support column 12L2 that constitute the retractable tower section 12L to the front or rear, respectively, and then folds up and stores the retractable step 12b2 at the base of the retractable tower section 12L.

これにより、最初は、図２および図３に示すように、図２における側面視、奥側、つまり図３における正面視、左側の可倒式タワー部１２Ｌを構成するナット側可倒式支柱１２Ｌ１およびボルト側可倒式支柱１２Ｌ２が起立してビーム１２ａを図３に示すように片持ち梁状態で支持していた状態からビーム１２ａを図２における側面視、手前側、つまり図３における正面視、右側の可倒式タワー部１２Ｒでの片持ち梁状態での支持に切り替えることができる。 As a result, initially, as shown in Figures 2 and 3, the nut-side retractable support column 12L1 and the bolt-side retractable support column 12L2 constituting the left retractable tower section 12L in the side view and rear side in Figure 2, i.e., when viewed from the front in Figure 3, are raised to support the beam 12a in a cantilever state as shown in Figure 3. However, the beam 12a can be switched to being supported in a cantilever state by the right retractable tower section 12R in the side view and front side in Figure 2, i.e., when viewed from the front in Figure 3.

＜本発明に係る実施形態のレール両側積卸機１のまとめ＞
従って、本発明に係る実施形態のレール両側積卸機１では、左右一対の可倒式タワー部１２Ｌ，１２Ｒは、それぞれ、ビーム１２ａを固定する箇所にナット部１２Ｌ１１，１２Ｒ１１が設けられたナット側可倒式支柱１２Ｌ１，１２Ｒ１と、ビーム支持ボルト１４が通されるボルト貫通孔１２ａ１が設けられ、ナット側可倒式支柱１２Ｌ１，１２Ｒ１とは反対側から起立するボルト側可倒式支柱１２Ｌ２，１２Ｒ２とを有し、ナット側可倒式支柱１２Ｌ１，１２Ｒ１とボルト側可倒式支柱１２Ｌ２，１２Ｒ２とを起立させてナット側可倒式支柱１２Ｌ１，１２Ｒ１およびボルト側可倒式支柱１２Ｌ２，１２Ｒ２の上部でビーム１２ａの左右両側を挟むと共に、ビーム支持ボルト１４の軸部をボルト側可倒式支柱１２Ｌ２，１２Ｒ２のボルト貫通孔１２ａ１からナット側可倒式支柱１２Ｌ１，１２Ｒ１のナット部１２Ｌ１１，１２Ｒ１１に通して締結することによりビーム１２ａを所定の高さに固定する。 <Summary of the rail double-side unloading machine 1 according to the embodiment of the present invention>
Therefore, in the rail both-side loading/unloading machine 1 according to the embodiment of the present invention, the pair of left and right retractable tower sections 12L, 12R each have a nut-side retractable support column 12L1, 12R1 provided with a nut section 12L11, 12R11 at a location where the beam 12a is fixed, and a bolt-side retractable support column 12L2, 12R2 provided with a bolt through hole 12a1 through which the beam support bolt 14 is passed and standing on the opposite side to the nut-side retractable support column 12L1, 12R1. The beam 12a is fixed at a predetermined height by raising the nut side tiltable supports 12L1, 12R1 and the bolt side tiltable supports 12L2, 12R2 and sandwiching the left and right sides of the beam 12a between the upper parts of the nut side tiltable supports 12L1, 12R1 and the bolt side tiltable supports 12L2, 12R2, and passing the shaft portion of the beam support bolt 14 through the bolt through hole 12a1 of the bolt side tiltable supports 12L2, 12R2 and into the nut portion 12L11, 12R11 of the nut side tiltable supports 12L1, 12R1 and fastening it.

そのため、クレーン１２ｃが設けられたビーム１２ａは、ナット側可倒式支柱１２Ｌ１，１２Ｒ１とボルト側可倒式支柱１２Ｌ２，１２Ｒ２とで挟まれた状態で所定の高さで固定されるため、ビームをバランス良く支持することができる。 Therefore, the beam 12a on which the crane 12c is mounted is fixed at a predetermined height while being sandwiched between the nut side retractable supports 12L1, 12R1 and the bolt side retractable supports 12L2, 12R2, so that the beam can be supported in a well-balanced manner.

特に、本発明に係る実施形態のレール両側積卸機１では、上記特許文献１に記載の背景技術のように油圧シリンダー等の昇降機構によってナット側可倒式支柱１２Ｌ１，１２Ｒ１およびボルト側可倒式支柱１２Ｌ２，１２Ｒ２を起立させたり倒伏させないので、コストを低減することもできる。 In particular, in the rail double-side loading and unloading machine 1 according to the embodiment of the present invention, the nut side retractable columns 12L1, 12R1 and the bolt side retractable columns 12L2, 12R2 are not raised or lowered by a lifting mechanism such as a hydraulic cylinder as in the background art described in the above-mentioned Patent Document 1, which also reduces costs.

また、本発明に係る実施形態のレール両側積卸機１では、左右一対の可倒式タワー部１２Ｌ，１２Ｒの基部には、それぞれ、車輪を有する走行部１２ｂ，１２ｂを設ける一方、レール運搬車本体１１の上面には、左右一対の可倒式タワー部１２Ｌ，１２Ｒの走行部１２ｂ，１２ｂが走行するサブレール構成体１３ａ，１３ｂ，１３ｃが走行レールＲ，Ｒの長手方向に設けている。 In addition, in the rail double-side loading and unloading machine 1 according to the embodiment of the present invention, the base of the pair of left and right retractable tower sections 12L, 12R is provided with running sections 12b, 12b having wheels, while the upper surface of the rail transport vehicle body 11 is provided with sub-rail components 13a, 13b, 13c along the longitudinal direction of the running rails R, R on which the running sections 12b, 12b of the pair of left and right retractable tower sections 12L, 12R run.

そのため、３基（３台）のレール積み降ろし機構体１２は、それぞれ、レール運搬車本体１１の長手方向に間隔を空けて３箇所設置されたサブレール構成体１３ａ，１３ｂ，１３ｃのサブレール１３ａ１～１３ｃ１に沿って走行することができるので、走行レールＲ，Ｒの長手方向への交換用レール３の移動が容易になると共に、交換用レール３の長さが変わった場合でも、レール運搬車本体１１の長手方向における３基（３台）のレール積み降ろし機構体１２の位置を用に変更して簡単に対応することができる。 As a result, the three rail loading/unloading mechanisms 12 can travel along the sub-rails 13a1 to 13c1 of the sub-rail structures 13a, 13b, and 13c that are installed at three locations spaced apart along the longitudinal direction of the rail transport vehicle body 11. This makes it easy to move the replacement rail 3 along the longitudinal direction of the running rails R, R, and even if the length of the replacement rail 3 changes, it can be easily accommodated by simply changing the positions of the three rail loading/unloading mechanisms 12 along the longitudinal direction of the rail transport vehicle body 11.

また、本発明に係る実施形態のレール両側積卸機１では、ビーム１２ａの左右両側にそれぞれ設けられたボルト貫通孔１２ａ１は、前後方向にそれぞれ先細の円錐台形面１２ａ１１を有する前後円錐台形凸部１２ａ１，１２ａ１（図４参照。）に設けられている一方、ナット側可倒式支柱１２Ｌ１，１２Ｒ１のナット部１２Ｌ１１，１２Ｒ１１と、ボルト側可倒式支柱１２Ｌ２，１２Ｒ２のボルト貫通孔１２ａ１との周囲には、それぞれ、ビーム１２ａの左右両側のボルト貫通孔１２ａ１が設けられた前後円錐台形凸部１２ａ１，１２ａ１の円錐台形面１２ａ１１，１２ａ１１が嵌合する円環状のすり鉢状傾斜凹面１２Ｌ１２ａ，１２Ｒ１２ａ、１２Ｌ２２ａ，１２Ｒ２２ａ（図５（ａ）参照。）を有するビーム支持ボルト用環状突起部１２Ｌ１２，１２Ｒ１２、１２Ｌ２２，１２Ｒ２２を設けている。 In addition, in the rail double-side loading and unloading machine 1 according to the embodiment of the present invention, the bolt through holes 12a1 provided on the left and right sides of the beam 12a are provided in the front and rear truncated cone-shaped convex portions 12a1, 12a1 (see FIG. 4) having tapered truncated cone-shaped surfaces 12a11 in the front and rear directions, respectively, while the nut portions 12L11, 12R11 of the nut side retractable columns 12L1, 12R1 and the bolt through holes 12L2, 12R2 of the bolt side retractable columns Around 12a1, there are provided annular projections 12L12, 12R12, 12L22, 12R22 for beam support bolts, each having an annular inclined cone-shaped concave surface 12L12a, 12R12a, 12L22a, 12R22a (see FIG. 5(a)) into which the truncated cone surfaces 12a11, 12a11 of the front and rear truncated cone-shaped protrusions 12a1, 12a1, which have bolt through holes 12a1 on both the left and right sides of the beam 12a, fit.

そのため、ビーム１２ａを左側のナット側可倒式支柱１２Ｌ１およびボルト側可倒式支柱１２Ｌ２で挟持してビーム支持ボルト１４で固定する際、ビーム１２ａを右側のナット側可倒式支柱１２Ｒ１およびボルト側可倒式支柱１２Ｒ２で挟持してビーム支持ボルト１４で固定する際には、ビーム１２ａの前後円錐台形凸部１２ａ１，１２ａ１とナット側可倒式支柱１２Ｌ１，１２Ｒ１およびボルト側可倒式支柱１２Ｌ２，１２Ｒ２のビーム支持ボルト用環状突起部１２Ｌ１２，１２Ｒ１２、１２Ｌ２２，１２Ｒ２２とで容易に位置決めすることが可能となるので、作業効率を向上させることができる。 Therefore, when the beam 12a is clamped between the left nut side retractable support 12L1 and the bolt side retractable support 12L2 and fixed with the beam support bolt 14, and when the beam 12a is clamped between the right nut side retractable support 12R1 and the bolt side retractable support 12R2 and fixed with the beam support bolt 14, the beam 12a can be easily positioned by the front and rear truncated cone-shaped protrusions 12a1, 12a1 and the annular protrusions 12L12, 12R12, 12L22, 12R22 for the beam support bolts of the nut side retractable support 12L1, 12R1 and the bolt side retractable support 12L2, 12R2, so that the work efficiency can be improved.

１レール両側積卸機
１１レール運搬車本体
１１ａ車輪
１１ｂ機関車用連結部
１２レール積み降ろし機構体
１２ａビーム
１２ａ１前後円錐台形凸部
１２ａ１２ボルト貫通孔
１２ｃクレーン
１２Ｌ，１２Ｒ可倒式タワー部
１２Ｌ１，１２Ｒ１ナット側可倒式支柱
１２Ｌ２，１２Ｒ２ボルト側可倒式支柱
１２Ｌ１１，１２Ｒ１１ナット部
１２Ｌ１２，１２Ｌ２２、１２Ｒ１２，１２Ｒ２２ビーム支持ボルト用環状突起部
１２Ｌ１２ａ，１２Ｒ１２ａ、１２Ｌ２２ａ，１２Ｒ２２ａすり鉢状傾斜凹面
１２Ｌ１３，１２Ｌ２３、１２Ｒ１３，１２Ｒ２３補助ボルト用環状突起部
１２Ｌ２１，１２Ｒ２１ボルト貫通孔
１３ａ，１３ｂ，１３ｃサブレール構成体
１３ａ１，１３ｂ１,１３ｃ１サブレール
１３ａ２，１３ｂ２，１３ｃ２サブレール間隔保持鋼
１４ビーム支持ボルト
１５補助ボルト
３交換用レール
Ｒ軌道用レール 1 Rail both side loading and unloading machine 11 Rail transport vehicle body 11a Wheel 11b Locomotive coupling section 12 Rail loading and unloading mechanism 12a Beam 12a1 Front and rear truncated cone-shaped convex section 12a12 Bolt through hole 12c Crane 12L, 12R Tiltable tower section 12L1, 12R1 Nut side foldable support column 12L2, 12R2 Bolt side foldable support column 12L11, 12R11 Nut section 12L12, 12L22, 12R12, 12R22 Annular protrusion section for beam support bolt 12L12a, 12R12a, 12L22a, 12R22a Mortar-shaped inclined concave surface 12L13, 12L23, 12R13, 12R23 Annular protrusion section for auxiliary bolt 12L21, 12R21 Bolt through hole 13a, 13b, 13c Sub-rail structure 13a1, 13b1, 13c1 Sub-rail 13a2, 13b2, 13c2 Sub-rail spacing retaining steel 14 Beam support bolt 15 Auxiliary bolt 3 Replacement rail R Track rail

Claims

A rail transport vehicle body that carries the replacement rail and travels on the running rails of the track;
a plurality of rail loading/unloading mechanisms provided with cranes for loading and unloading the replacement rails, the rail loading/unloading mechanisms being provided at least in two locations spaced apart in the longitudinal direction of the rail transport vehicle body;
Each of the plurality of rail loading/unloading mechanisms comprises:
A beam provided across the traveling rail and on which the crane is slidably provided;
a pair of left and right retractable tower sections that are provided on both the left and right sides of the rail transport vehicle body so as to be able to stand up and fall down in the longitudinal direction of the traveling rail via a rotating shaft, and that support the beam in a gate-shaped state on both the left and right sides of the rail transport vehicle body or in a cantilever state from either the left or right side of the rail transport vehicle body by fixing the beam at a predetermined height;
On both the left and right sides of the beam, bolt through holes through which beam support bolts for fixing the pair of left and right collapsible tower sections on the left and right sides are passed are provided,
The pair of left and right collapsible tower units each include
A nut-side collapsible support column having a nut portion provided at a location where the beam is fixed;
A bolt through hole through which the beam support bolt is passed is provided, and a bolt side retractable support pillar is erected on the opposite side to the nut side retractable support pillar,
The bolt through holes provided on the left and right sides of the beam are provided at their inlet and outlet sides with annular front and rear truncated cone-shaped protrusions each having a tapered truncated cone surface in the front and rear direction,
The nut portion of the nut side retractable support column and the opposing side of the beam in the bolt through hole of the bolt side retractable support column are provided with annular protrusions for beam support bolts, each having an annular mortar-shaped inclined concave surface into which the truncated cone surfaces of the front and rear truncated cone protrusions provided on both the left and right sides of the beam are fitted,
a nut side retractable support column and a bolt side retractable support column are raised to sandwich the front and rear truncated convex portions on both sides of the beam with the annular protrusions for the beam support bolts of the nut side retractable support column and the bolt side retractable support column, respectively, and the shaft portion of the beam support bolt is passed through the bolt through hole of the bolt side retractable support column and the nut portion of the nut side retractable support column and fastened to fix the beam at a predetermined height.

In the rail double-side unloading machine according to claim 1,
A running part having wheels is provided at the base of each of the pair of left and right collapsible tower parts,
A rail double-sided loading/unloading machine characterized in that a sub-rail along which the running parts of the pair of left and right retractable tower parts run is provided on the upper surface of the rail transport vehicle body in the longitudinal direction of the running rail.

In the rail double-side unloading machine according to claim 1 or 2 ,
A rail double-sided loading/unloading machine characterized in that below each of the annular protrusions for the beam support bolt on the nut side retractable support and the bolt side retractable support, an annular protrusion for an auxiliary bolt having an auxiliary bolt through hole through which an auxiliary bolt passes that connects the nut side retractable support and the bolt side retractable support without going through the beam is provided.

In the rail double-side unloading machine according to claim 3 ,
The upper end of a turnbuckle is connected to the end of the beam, while the lower end of the turnbuckle is connected to the auxiliary bolt passing through the auxiliary bolt through hole of the annular protrusion for the auxiliary bolt of each of the nut side retractable support column and the bolt side retractable support column.