JP2019019518A - Screw conveyor and shield machine - Google Patents

Screw conveyor and shield machine Download PDF

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Publication number
JP2019019518A
JP2019019518A JP2017137814A JP2017137814A JP2019019518A JP 2019019518 A JP2019019518 A JP 2019019518A JP 2017137814 A JP2017137814 A JP 2017137814A JP 2017137814 A JP2017137814 A JP 2017137814A JP 2019019518 A JP2019019518 A JP 2019019518A
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Prior art keywords
auger
screw conveyor
central axis
spiral
peripheral surface
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JP2017137814A
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JP2019019518A5 (en
JP7033403B2 (en
Inventor
誠 小田
Makoto Oda
誠 小田
隆雄 伊藤
Takao Ito
隆雄 伊藤
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Kawasaki Heavy Industries Ltd
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Kawasaki Heavy Industries Ltd
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Priority to JP2017137814A priority Critical patent/JP7033403B2/en
Application filed by Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to KR1020207002762A priority patent/KR102427744B1/en
Priority to GB2000529.4A priority patent/GB2578392B/en
Priority to DE112018003616.2T priority patent/DE112018003616T8/en
Priority to CN201880044912.5A priority patent/CN110869583B/en
Priority to PCT/JP2018/026507 priority patent/WO2019013328A1/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)

Abstract

To provide a screw conveyor and a shield machine including the screw conveyor which can transport large lumps and have high water barrier.SOLUTION: A screw conveyor from one side comprises a spiral auger and a central axis extending along a center line of the auger and formed in a spiral shape having the same phase as the auger. The screw conveyor from another side is a ribbon type screw conveyor and comprises a spiral auger and a plurality of protrusions provided on the inner peripheral surface of the auger and extending to a center line of the auger.SELECTED DRAWING: Figure 1

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 machine including the screw conveyor.

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 a screw conveyor, there are a shaft type that is spirally attached to a linear center axis and a ribbon type that does not have a center axis (for example, see Patent Document 1). Ribbon type screw conveyors have the advantage of being able to transport larger lumps (eg gravel) than shafted screw conveyors.

特開２０１１−６９１５７号公報JP 2011-69157 A

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, when the ribbon screw conveyor is viewed from the axial direction, a through hole is formed in the center of the auger. Therefore, when a conveyed product contains much water | moisture content, there exists a problem that water stop 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。   Then, an object of this invention is to provide the screw conveyor which can convey a big lump, and has high water stop, and the shield machine containing this.

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, a screw conveyor according to one aspect of the present invention includes a helical auger and a central axis extending along a center line of the auger, and having a helical shape having the same phase as the auger. And a central axis formed.

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 said structure, since a central axis exists, when a screw conveyor is seen from an axial direction, a through-hole is not formed in the center of an auger. Accordingly, the water stoppage can be increased. Moreover, since the central axis is spiral, a larger lump can be conveyed compared to the case where the central axis is linear as in the prior art. Furthermore, since the spiral shape of the central axis has the same phase as that of the auger, the conveyed product can flow 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, it is not necessary to join the central shaft and the auger, 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 longitudinal 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 center 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。   The screw conveyor according to another aspect of the present invention is a ribbon screw conveyor, and includes 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. And comprising.

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 said structure, when a screw conveyor is seen from an axial direction, a through-hole is not formed in the center of an auger. Accordingly, it is possible to enhance the water-stopping property while taking advantage of the ribbon 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, a screw conveyor according to another aspect of the present invention is a ribbon screw conveyor, and includes a spiral auger, and a distance from a center line of the auger to an 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 said structure, when a screw conveyor is seen from an axial direction, a through-hole is not substantially formed in the center of an auger. Accordingly, it is possible to enhance the water-stopping property while taking advantage of the ribbon 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。   Moreover, the shield machine of this invention is provided with said 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。   ADVANTAGE OF THE INVENTION According to this invention, the screw conveyor which can convey a big lump and has high water stop is provided.

（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 which concerns on 1st Embodiment of this invention, (b) is sectional drawing 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 which concerns on 2nd Embodiment of this invention, (b) is sectional drawing 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 which concerns on 3rd Embodiment of this invention, (b) is sectional drawing 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 a 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 which concerns on 4th Embodiment of this invention, (b) is sectional drawing 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 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 a screw conveyor 1A according to a 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 machine.

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 3 </ b> A includes a spiral auger 5 and a central axis 4 that extends 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 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 a longitudinal 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 longitudinal section including the center line L of the auger 5 as shown in FIG. 1B, the minimum distance D2 from the center line L of the auger 5 to the outer peripheral surface 41 of the central shaft 4 is 1 of the outer diameter D1 of the auger 5. / 20 or less is desirable. More desirably, 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 this embodiment, since the central shaft 4 exists, a through hole is not formed at the center of the auger 5 when the screw conveyor 1A is viewed from the axial direction. Accordingly, the water stoppage can be increased. Moreover, since the central axis 4 is spiral, a larger lump 10 can be conveyed compared to a screw conveyor 100 having a linear central axis as shown in FIGS. 6 (a) and 6 (b). . Furthermore, since the spiral shape of the central shaft 4 is in the same phase as the auger 5, the conveyed product can flow at the same timing as the auger 5 even at a position along the central shaft 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)
FIGS. 2A and 2B show a screw conveyor 1B according to a second embodiment of the present invention. In the present embodiment and third and fourth embodiments to be described later, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is 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 visually 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 blade surfaces 51 and 52 of the auger 5 (51: transport surface, 52: non-transport surface). In the illustrated example, the outer peripheral surface of the central shaft 4 and the two blade surfaces 51 and 52 of the auger 5 form a hemispherical curved surface in a longitudinal 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。   If it is a structure like this embodiment, if the center axis | shaft 4 and the auger 5 are manufactured integrally by casting, for example, joining with the center axis | shaft 4 and an auger becomes unnecessary, and it can reduce cost.

（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 a screw conveyor 1C according to a 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 1 </ b> C of the present embodiment is a ribbon screw conveyor and includes a screw 3 </ b> C that does not have the central shaft 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 3 </ b> C 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, the protrusions 6 are arranged so as to form a spiral staircase as shown in FIG.

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。   If it is the structure like this embodiment, a through-hole will not be formed in the center of the auger 5 when the screw conveyor 1C is seen from an axial direction. Accordingly, it is possible to increase the water stop while taking advantage of the ribbon screw conveyor that can transport 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 a screw conveyor 1D according to a 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 1 </ b> D of the present embodiment is a ribbon type screw conveyor, and includes a screw 3 </ b> D that does not have the central shaft 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。   If it is the structure like this embodiment, a through-hole will not be substantially formed in the center of the auger 5 when the screw conveyor 1D is seen from an axial direction. Accordingly, it is possible to increase the water stop while taking advantage of the ribbon screw conveyor that can transport 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 embodiments, 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 to 1D Screw conveyor 4 Central axis 5 Auger 51, 52 Feather 6 Projection

Claims (6)

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、スクリューコンベア。 A spiral auger,
A central axis extending along a central line of the auger, the central axis formed in a spiral shape having the same phase as the auger;
A screw conveyor. 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 an outer peripheral surface of the central axis is smoothly connected to both blade surfaces 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または２に記載のスクリューコンベア。   The vertical distance including the centerline of the auger, The minimum distance from the centerline of the auger to the outer peripheral surface of the central axis is 1/20 or less of the outer diameter of the auger. Screw conveyor. 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、スクリューコンベア。 Ribbon type screw conveyor,
A spiral auger,
A plurality of protrusions provided on the inner peripheral surface of the auger and extending to the center line of the auger;
A screw conveyor. 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、スクリューコンベア。 Ribbon type screw conveyor,
With a spiral auger,
A screw conveyor, wherein a distance from a center line of the auger to an inner peripheral surface of the auger is substantially zero. 請求項１〜５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 machine provided with the screw conveyor according to any one of claims 1 to 5.
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JP2017137814A JP7033403B2 (en) 2017-07-14 2017-07-14 Screw conveyor and shield excavator
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
CN201880044912.5A CN110869583B (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
PCT/JP2018/026507 WO2019013328A1 (en) 2017-07-14 2018-07-13 Screw conveyor and shield tunneling machine

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JPS595697U (en) * 1982-07-05 1984-01-14 前田建設工業株式会社 Screw-type earth removal device equipped with water-stop blades to prevent earth and sand from flowing out in the earth pressure shield method
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GB2578392A (en) 2020-05-06
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GB202000529D0 (en) 2020-02-26
GB2578392B (en) 2022-03-09

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