JP7033403B2 - Screw conveyor and shield excavator - Google Patents

Screw conveyor and shield excavator Download PDF

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JP7033403B2
JP7033403B2 JP2017137814A JP2017137814A JP7033403B2 JP 7033403 B2 JP7033403 B2 JP 7033403B2 JP 2017137814 A JP2017137814 A JP 2017137814A JP 2017137814 A JP2017137814 A JP 2017137814A JP 7033403 B2 JP7033403 B2 JP 7033403B2
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auger
screw conveyor
central axis
center line
peripheral surface
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JP2019019518A (en
JP2019019518A5 (en
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誠 小田
隆雄 伊藤
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地中空間開発株式会社
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Priority to JP2017137814A priority Critical patent/JP7033403B2/en
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Priority to GB2000529.4A priority patent/GB2578392B/en
Priority to PCT/JP2018/026507 priority patent/WO2019013328A1/en
Priority to KR1020207002762A priority patent/KR102427744B1/en
Priority to CN201880044912.5A priority patent/CN110869583B/en
Priority to DE112018003616.2T priority patent/DE112018003616T8/en
Publication of JP2019019518A publication Critical patent/JP2019019518A/en
Publication of JP2019019518A5 publication Critical patent/JP2019019518A5/ja
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/124—Helical conveying means therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/02—Screw or rotary spiral conveyors for articles
    • B65G33/04—Screw or rotary spiral conveyors for articles conveyed between a single screw and guiding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/24—Details
    • B65G33/26—Screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G33/00—Screw or rotary spiral conveyors
    • B65G33/24—Details
    • B65G33/26—Screws
    • B65G33/265—Screws with a continuous helical surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/05—Screw-conveyors
    • B65G2812/0505—Driving means, constitutive elements or auxiliary devices
    • B65G2812/0511—Conveyor screws
    • B65G2812/0527—Conveyor screws characterised by the configuration, e.g. hollow, toothed

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Screw Conveyors (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Description

本発明は、スクリューコンベアおよびこれを含むシールド掘進機に関する。 The present invention relates to a screw conveyor and a shield excavator including the same.

スクリューコンベアとしては、直線状の中心軸に螺旋状のオーガが取り付けられた軸付き式のものと、中心軸を有さないリボン式のものとがある（例えば、特許文献１参照）。リボン式のスクリューコンベアは、軸付き式のスクリューコンベアに比べて、より大きな塊（例えば、礫）を搬送できるという利点がある。
As the screw conveyor, there are a type with a shaft in which a spiral auger is attached to a linear central axis and a type with a ribbon having no central axis (see, for example, Patent Document 1). Ribbon-type screw conveyors have the advantage of being able to convey larger chunks (eg, gravel) than shaft-mounted screw conveyors.

特開２０１１－６９１５７号公報Japanese Unexamined Patent Publication No. 2011-69157

しかしながら、リボン式のスクリューコンベアは、軸方向から見たときに、オーガの中心に通し穴が形成される。従って、搬送物が水分を多く含む場合には、止水性が低いという問題がある。 However, in the ribbon type screw conveyor, a through hole is formed in the center of the auger when viewed from the axial direction. Therefore, when the transported object contains a large amount of water, there is a problem that the water stopping property is low.

そこで、本発明は、大きな塊を搬送できて止水性が高いスクリューコンベアおよびこれを含むシールド掘進機を提供することを目的とする。 Therefore, an object of the present invention is to provide a screw conveyor capable of transporting a large lump and having high water stopping property, and a shield excavator including the screw conveyor.

前記課題を解決するために、本発明の１つの側面からのスクリューコンベアは、螺旋状のオーガと、前記オーガの中心線に沿って延びる中心軸であって、前記オーガと同一位相の螺旋状に形成された中心軸と、を備える、ことを特徴とする。 In order to solve the above-mentioned problems, the screw conveyor from one side of the present invention has a spiral auger and a central axis extending along the center line of the auger, and has a spiral shape having the same phase as the auger. It is characterized by having a formed central axis.

上記の構成によれば、中心軸が存在するので、スクリューコンベアを軸方向から見たときにオーガの中心に通し穴が形成されない。従って、止水性を高めることができる。しかも、中心軸が螺旋状であるので、従来のように中心軸が直線状である場合に比べ、より大きな塊を搬送することができる。さらに、中心軸の螺旋状はオーガと同一の位相であるので、搬送物を中心軸に沿う位置でもオーガと同じタイミングで流すことができる。 According to the above configuration, since the central axis exists, the through hole is not formed in the center of the auger when the screw conveyor is viewed from the axial direction. Therefore, the water stoppage can be enhanced. Moreover, since the central axis is spiral, a larger lump can be conveyed as compared with the case where the central axis is linear as in the conventional case. Further, since the spiral shape of the central axis has the same phase as that of the auger, the conveyed object can be flowed at the same timing as the auger even at a position along the central axis.

前記中心軸の外周面は、前記オーガの両羽面と滑らかにつながっていてもよい。この構成によれば、例えば中心軸とオーガを鋳造により一体的に製造すれば、中心軸とオーガとの接合が不要となりコストを低減することがきる。 The outer peripheral surface of the central axis may be smoothly connected to both wing surfaces of the auger. According to this configuration, for example, if the central shaft and the auger are integrally manufactured by casting, the joining between the central shaft and the auger becomes unnecessary and the cost can be reduced.

例えば、前記オーガの中心線を含む縦断面において、前記オーガの中心線から前記中心軸の外周面までの最小距離は、前記オーガの外径の１／２０以下であってもよい。 For example, in a vertical cross section including the center line of the auger, the minimum distance from the center line of the auger to the outer peripheral surface of the central axis may be 1/20 or less of the outer diameter of the auger.

また、本発明の別の側面からのスクリューコンベアは、リボン式のスクリューコンベアであって、螺旋状のオーガと、前記オーガの内周面に設けられた、前記オーガの中心線まで延びる複数の突起と、を備える、ことを特徴とする。 Further, the screw conveyor from another side of the present invention is a ribbon type screw conveyor, which is a spiral auger and a plurality of protrusions provided on the inner peripheral surface of the auger and extending to the center line of the auger. It is characterized by having and.

上記の構成によれば、スクリューコンベアを軸方向から見たときにオーガの中心に通し穴が形成されない。従って、大きな塊を搬送できるというリボン式のスクリューコンベアの利点を活かしつつ、止水性を高めることができる。 According to the above configuration, no through hole is formed in the center of the auger when the screw conveyor is viewed from the axial direction. Therefore, it is possible to improve the water stoppage while taking advantage of the ribbon type screw conveyor that can convey a large lump.

また、本発明のさらに別の側面からのスクリューコンベアは、リボン式のスクリューコンベアであって、螺旋状のオーガを備え、前記オーガの中心線から前記オーガの内周面までの距離が実質的にゼロである、ことを特徴とする。 Further, the screw conveyor from yet another aspect of the present invention is a ribbon type screw conveyor, which includes a spiral auger, and the distance from the center line of the auger to the inner peripheral surface of the auger is substantially. It is characterized by being zero.

上記の構成によれば、スクリューコンベアを軸方向から見たときにオーガの中心に通し穴が実質的に形成されない。従って、大きな塊を搬送できるというリボン式のスクリューコンベアの利点を活かしつつ、止水性を高めることができる。 According to the above configuration, no through hole is substantially formed in the center of the auger when the screw conveyor is viewed from the axial direction. Therefore, it is possible to improve the water stoppage while taking advantage of the ribbon type screw conveyor that can convey a large lump.

また、本発明のシールド掘進機は、上記のスクリューコンベアを備えることを特徴とする。 Further, the shield excavator of the present invention is characterized by including the above-mentioned screw conveyor.

本発明によれば、大きな塊を搬送できて止水性が高いスクリューコンベアが提供される。 According to the present invention, there is provided a screw conveyor capable of transporting a large lump and having high water stopping property.

（ａ）は本発明の第１実施形態に係るスクリューコンベアの側面図、（ｂ）は同スクリューコンベアの断面図である。(A) is a side view of the screw conveyor according to the first embodiment of the present invention, and (b) is a sectional view of the screw conveyor. （ａ）は本発明の第２実施形態に係るスクリューコンベアの側面図、（ｂ）は同スクリューコンベアの断面図である。(A) is a side view of the screw conveyor according to the second embodiment of the present invention, and (b) is a sectional view of the screw conveyor. （ａ）は本発明の第３実施形態に係るスクリューコンベアの側面図、（ｂ）は同スクリューコンベアの断面図である。(A) is a side view of the screw conveyor according to the third embodiment of the present invention, and (b) is a sectional view of the screw conveyor. 第３実施形態におけるスクリューの斜視図である。It is a perspective view of the screw in 3rd Embodiment. （ａ）は本発明の第４実施形態に係るスクリューコンベアの側面図、（ｂ）は同スクリューコンベアの断面図である。(A) is a side view of the screw conveyor according to the fourth embodiment of the present invention, and (b) is a sectional view of the screw conveyor. （ａ）は従来の軸付き式のスクリューコンベアの側面図、（ｂ）は同スクリューコンベアの断面図である。(A) is a side view of a conventional screw conveyor with a shaft, and (b) is a cross-sectional view of the screw conveyor.

（第１実施形態）
図１（ａ）および（ｂ）に、本発明の第１実施形態に係るスクリューコンベア１Ａを示す。このスクリューコンベア１Ａは、スクリュー３Ａと、スクリュー３Ａを収容する筒状のケーシング２を含む。スクリューコンベア１Ａは、例えばシールド掘進機に搭載される。 (First Embodiment)
1A and 1B show the screw conveyor 1A according to the first embodiment of the present invention. The screw conveyor 1A includes a screw 3A and a cylindrical casing 2 that houses the screw 3A. The screw conveyor 1A is mounted on, for example, a shield excavator.

スクリュー３Ａは、螺旋状のオーガ５と、オーガ５の中心線Ｌに沿って延びる中心軸４を含む。例えば、中心軸４とオーガとは溶接により接合される。 The screw 3A includes a spiral auger 5 and a central axis 4 extending along the center line L of the auger 5. For example, the central shaft 4 and the auger are joined by welding.

中心軸４は、オーガ５と同一位相の螺旋状に形成されている。換言すれば、中心軸４は、オーガ５の中心線Ｌを含む縦断面において、オーガ５の断面部分に向かって凸となるように波打っている。 The central axis 4 is formed in a spiral shape having the same phase as that of the auger 5. In other words, the central axis 4 is wavy so as to be convex toward the cross-sectional portion of the auger 5 in the vertical cross section including the center line L of the auger 5.

図１（ｂ）に示すようなオーガ５の中心線Ｌを含む縦断面において、オーガ５の中心線Ｌから中心軸４の外周面４１までの最小距離Ｄ２は、オーガ５の外径Ｄ１の１／２０以下であることが望ましい。より望ましくは、オーガ５の中心線Ｌから中心軸４の外周面４１までの最小距離Ｄ２は、オーガ５の外径Ｄ１の１／４０以下である。 In the vertical cross section including the center line L of the auger 5 as shown in FIG. 1 (b), the minimum distance D2 from the center line L of the auger 5 to the outer peripheral surface 41 of the central axis 4 is 1 of the outer diameter D1 of the auger 5. It is desirable that it is / 20 or less. More preferably, the minimum distance D2 from the center line L of the auger 5 to the outer peripheral surface 41 of the central axis 4 is 1/40 or less of the outer diameter D1 of the auger 5.

本実施形態によれば、中心軸４が存在するので、スクリューコンベア１Ａを軸方向から見たときにオーガ５の中心に通し穴が形成されない。従って、止水性を高めることができる。しかも、中心軸４が螺旋状であるので、図６（ａ）および（ｂ）に示すような従来の中心軸が直線状であるスクリューコンベア１００に比べ、より大きな塊１０を搬送することができる。さらに、中心軸４の螺旋状はオーガ５と同一の位相であるので、搬送物を中心軸４に沿う位置でもオーガ５と同じタイミングで流すことができる。 According to the present embodiment, since the central shaft 4 exists, a through hole is not formed in the center of the auger 5 when the screw conveyor 1A is viewed from the axial direction. Therefore, the water stoppage can be enhanced. Moreover, since the central axis 4 is spiral, a larger lump 10 can be conveyed as compared with the conventional screw conveyor 100 having a linear central axis as shown in FIGS. 6A and 6B. .. Further, since the spiral shape of the central axis 4 has the same phase as that of the auger 5, the conveyed object can be flowed at the same timing as the auger 5 even at a position along the central axis 4.

（第２実施形態）
図２（ａ）および（ｂ）に、本発明の第２実施形態に係るスクリューコンベア１Ｂを示す。なお、本実施形態ならびに後述する第３および第４実施形態において、第１実施形態と同一構成要素には同一符号を付し、重複した説明は省略する。 (Second Embodiment)
2 (a) and 2 (b) show the screw conveyor 1B according to the second embodiment of the present invention. In this embodiment and the third and fourth embodiments described later, the same components as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

本実施形態のスクリューコンベア１Ｂは、中心軸４とオーガ５とが見た目上一体となったスクリュー３Ｂを含む。 The screw conveyor 1B of the present embodiment includes a screw 3B in which the central shaft 4 and the auger 5 are apparently integrated.

具体的に、本実施形態では、中心軸４の外周面４１がオーガ５の両羽面５１，５２（５１：搬送面、５２：非搬送面）と滑らかにつながっている。図例では、中心軸４の外周面とオーガ５の両羽面５１，５２とが、オーガ５の中心線Ｌを含む縦断面において、半球状の曲面を形成する。 Specifically, in the present embodiment, the outer peripheral surface 41 of the central shaft 4 is smoothly connected to both wing surfaces 51 and 52 (51: transport surface, 52: non-convey surface) of the auger 5. In the illustrated example, the outer peripheral surface of the central axis 4 and the wing surfaces 51 and 52 of the auger 5 form a hemispherical curved surface in a vertical cross section including the center line L of the auger 5.

本実施形態のような構成であれば、例えば中心軸４とオーガ５を鋳造により一体的に製造すれば、中心軸４とオーガとの接合が不要となりコストを低減することがきる。 In the case of the configuration as in this embodiment, for example, if the central shaft 4 and the auger 5 are integrally manufactured by casting, the joining between the central shaft 4 and the auger becomes unnecessary and the cost can be reduced.

（第３実施形態）
図３（ａ）および（ｂ）ならびに図４に、本発明の第３実施形態に係るスクリューコンベア１Ｃを示す。 (Third Embodiment)
3 (a) and 3 (b) and FIG. 4 show the screw conveyor 1C according to the third embodiment of the present invention.

本実施形態のスクリューコンベア１Ｃは、リボン式のスクリューコンベアであり、中心軸４を有しないスクリュー３Ｃを含む。 The screw conveyor 1C of the present embodiment is a ribbon type screw conveyor and includes a screw 3C having no central axis 4.

スクリュー３Ｃは、螺旋状のオーガ５と、オーガ５の内周面に設けられた複数の突起６を含む。各突起６は、オーガ５の内周面からオーガ５の中心線Ｌまで延びている。すなわち、突起６は、図４に示すように、螺旋階段を形成するように並んでいる。 The screw 3C includes a spiral auger 5 and a plurality of protrusions 6 provided on the inner peripheral surface of the auger 5. Each protrusion 6 extends from the inner peripheral surface of the auger 5 to the center line L of the auger 5. That is, as shown in FIG. 4, the protrusions 6 are arranged so as to form a spiral staircase.

本実施形態のような構成であれば、スクリューコンベア１Ｃを軸方向から見たときにオーガ５の中心に通し穴が形成されない。従って、大きな塊１０を搬送できるというリボン式のスクリューコンベアの利点を活かしつつ、止水性を高めることができる。 With the configuration as in this embodiment, no through hole is formed in the center of the auger 5 when the screw conveyor 1C is viewed from the axial direction. Therefore, it is possible to improve the water stoppage while taking advantage of the ribbon type screw conveyor that can convey the large lump 10.

（第４実施形態）
図５（ａ）および（ｂ）に、本発明の第５実施形態に係るスクリューコンベア１Ｄを示す。 (Fourth Embodiment)
5 (a) and 5 (b) show the screw conveyor 1D according to the fifth embodiment of the present invention.

本実施形態のスクリューコンベア１Ｄは、リボン式のスクリューコンベアであり、中心軸４を有しないスクリュー３Ｄを含む。 The screw conveyor 1D of the present embodiment is a ribbon type screw conveyor and includes a screw 3D having no central axis 4.

スクリュー３Ｄは、螺旋状のオーガ５を含む。本実施形態では、オーガ５の中心線Ｌからオーガ５の内周面までの距離が実質的にゼロ（例えば、１０ｍｍ以下）である。 The screw 3D includes a spiral auger 5. In the present embodiment, the distance from the center line L of the auger 5 to the inner peripheral surface of the auger 5 is substantially zero (for example, 10 mm or less).

本実施形態のような構成であれば、スクリューコンベア１Ｄを軸方向から見たときにオーガ５の中心に通し穴が実質的に形成されない。従って、大きな塊１０を搬送できるというリボン式のスクリューコンベアの利点を活かしつつ、止水性を高めることができる。 With the configuration as in the present embodiment, the through hole is not substantially formed in the center of the auger 5 when the screw conveyor 1D is viewed from the axial direction. Therefore, it is possible to improve the water stoppage while taking advantage of the ribbon type screw conveyor that can convey the large lump 10.

（その他の実施形態）
本発明は上述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変形が可能である。 (Other embodiments)
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

１Ａ～１Ｄ スクリューコンベア
４ 中心軸
５ オーガ
５１，５２ 羽面
６ 突起
1A-1D Screw Conveyor 4 Central Shaft 5 Ogre 51,52 Wing Surface 6 Protrusions

Claims (4)

螺旋状のオーガと、
前記オーガの中心線に沿って延びる中心軸であって、前記オーガと同一位相の螺旋状に形成された中心軸と、を備え、
前記中心軸の外周面は、前記オーガの互いに逆方向を向く搬送面および非搬送面である両羽面と滑らかにつながっており、
前記中心軸の外周面と前記オーガの両羽面とは、前記オーガの中心線を含む断面において半球状の曲面を形成する、スクリューコンベア。 With a spiral auger,
A central axis extending along the center line of the auger, comprising a spirally formed central axis having the same phase as the auger .
The outer peripheral surface of the central axis is smoothly connected to both the transport surface and the non-transport surface of the auger facing in opposite directions.
A screw conveyor in which the outer peripheral surface of the central axis and both wing surfaces of the auger form a hemispherical curved surface in a cross section including the center line of the auger . 前記オーガの中心線を含む縦断面において、前記オーガの中心線から前記中心軸の外周面までの最小距離は、前記オーガの外径の１／２０以下である、請求項１に記載のスクリューコンベア。 The screw conveyor according to claim 1 , wherein the minimum distance from the center line of the auger to the outer peripheral surface of the central axis is 1/20 or less of the outer diameter of the auger in the vertical cross section including the center line of the auger. .. リボン式のスクリューコンベアであって、
螺旋状のオーガと、
前記オーガの内周面に沿って螺旋状に並ぶ、前記オーガの内周面から前記オーガの中心線まで延びる複数の突起と、
を備える、スクリューコンベア。 It ’s a ribbon-type screw conveyor.
With a spiral auger,
A plurality of protrusions extending from the inner peripheral surface of the auger to the center line of the auger, which are spirally arranged along the inner peripheral surface of the auger.
Equipped with a screw conveyor. 請求項１～３の何れか一項に記載のスクリューコンベアを備えるシールド掘進機。
A shield excavator provided with the screw conveyor according to any one of claims 1 to 3 .
JP2017137814A 2017-07-14 2017-07-14 Screw conveyor and shield excavator Active JP7033403B2 (en)

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JP2017137814A JP7033403B2 (en) 2017-07-14 2017-07-14 Screw conveyor and shield excavator
PCT/JP2018/026507 WO2019013328A1 (en) 2017-07-14 2018-07-13 Screw conveyor and shield tunneling machine
KR1020207002762A KR102427744B1 (en) 2017-07-14 2018-07-13 Screw Conveyor and Shield Excavator
CN201880044912.5A CN110869583B (en) 2017-07-14 2018-07-13 Screw conveyor and shield tunneling machine
GB2000529.4A GB2578392B (en) 2017-07-14 2018-07-13 Screw conveyor and shield machine
DE112018003616.2T DE112018003616T8 (en) 2017-07-14 2018-07-13 Screw conveyor and shield machine

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