CN1077005A - 改进的混凝土紧固件 - Google Patents

改进的混凝土紧固件 Download PDF

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Publication number
CN1077005A
CN1077005A CN93102184A CN93102184A CN1077005A CN 1077005 A CN1077005 A CN 1077005A CN 93102184 A CN93102184 A CN 93102184A CN 93102184 A CN93102184 A CN 93102184A CN 1077005 A CN1077005 A CN 1077005A
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fastening piece
screw thread
section
article
boring
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艾丽西亚·威德
拉尔夫·D·坦恩尤塔
马丁·J·尼尔森
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Illinois Tool Works Inc
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Illinois Tool Works Inc
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Publication of CN1077005A publication Critical patent/CN1077005A/zh
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0275—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the screw-threaded element having at least two axially separated threaded portions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0026—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a hard non-organic material, e.g. stone, concrete or drywall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0057—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0068—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw with multiple-threads, e.g. a double thread screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0073—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw characterised by its pitch, e.g. a varying pitch

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Dowels (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

一种把构件与混凝土或砖石坚密连接固定在一 起的紧固件，该紧固件的螺纹部分包括两段，第一段 为双螺纹，用于拧入混凝土中的钻孔，并在拧入钻孔 过程中使紧固件保持稳定和对中。第二段为单螺纹， 其螺距比第一段螺纹的螺距大，可容纳从钻孔中切下 的细屑，从而使切屑不致影响紧固件完全拧入钻孔。

Description

本发明涉及一种改进的紧固件，它可用于把物体同致密的、坚硬的材料如混凝土及其类似材料紧密连接，特别涉及混凝土或砖石紧固件的改进结构，该结构比转让给本发明受让人的Ernst的美国专利No.3，937，119中所述的结构有很大改进。
为适用不同目的而设计的不同紧固件结构在相关技术中也很普遍，例如可由下列美国专利获知：
Siebol等    3,739,628    06/19/73
Laverty    3,861,269    01/21/75
Yotti    3,902,399    09/02/75
Shimizu等    4,241,638    12/03/80
Barth等    4,576,534    03/18/86
Shimizu等    4,329,099    05/11/82
Brandt等    4,655,661    04/07/87
Kawashita    4,874,278    10/17/89
本发明的主要目的是提供一种紧固件或锚的新型的、改进的结构，从而使其可把物体同质密的、坚硬的材料如混凝土及其类似材料紧密连接在一起。
本发明更具体的目的是提供一种具有两段螺纹结构的紧固件，其中：第一段为双螺纹，可使紧固件进入混凝土钻孔时保持稳定;第二段为单螺纹，其螺距的空间可容纳由于紧固件铰入钻孔而带来的混凝土切屑。
本发明更进一步的目的是提供一种能把物体和构件连接并具有很大的拔出阻力的紧固件。
本发明的再一个目的是提供一种具有径向切口的紧固件，它可以整洁地切削钻孔周围的材料。
本发明还有一个目的是提供一种进入钻孔时比现在可获得的其它紧固件有更好的稳定性的紧固件。
本发明的结构和工作方式及本发明进一步的目的和优点可参考下面结合附图描述的实施例理解的更清楚，图中相同的数字表示相同的零件，其中：
图1为根据本发明制成的紧固件的侧面视图，它显示出该紧固件的独特结构。
如图1所示，本发明的紧固件10包括一个圆柱杆12，其一端为驱动头14，另一端为楔入尖端16。驱动头14上有驱动面18，可用于板手夹持操作;另外还有一个横向槽口20，便于螺丝刀操作。紧固件尖端16可以是所谓的X尖端，这种结构出现在美国专利No.4，693，654中。
紧固件的杆12包括光滑无螺纹部分22，这一部分从靠近驱动头处开始沿杆伸长一定长度;另外还有一部分为螺纹部分，这部分在尖端16与无螺纹部分22之间，其中包括在杆上的第一段24和第二段26。第一段和第二段螺纹将在下面详细描述。
在杆上的第一条螺纹28从靠近尖端处开始直到无螺纹部分22，可以看到螺纹28贯穿整个第一段和第二段24和26，螺纹28的直径随螺纹从尖端16到无螺纹部分22而逐渐增加，而其螺距保持不变。
螺纹28具有良好的尖锐齿顶，如图所示，而且有很多切口30，它分布在螺纹上彼此隔开。
在紧固件的杆上还有一条从楔入尖端开始并止于第一条螺纹28的中点附近的第二条螺纹32，由此限定了前述紧固件的第一段24。第二条螺纹32分布在第一条螺纹28的两齿顶的中间，其螺距与第一条螺纹28相同。可以看出，螺纹32的直径在整个长度上基本保持恒定，其直径明显小于第一条螺纹28。因而从图可见，第一段24由螺纹28和32两条螺纹构成，而第二段26仅由螺纹28一条螺纹构成。
本发明的紧固件10用于旋转拧入在混凝土或砖石墙36上的钻孔34，从而把构件38固定在墙上。
当紧固件进入钻孔34时，螺纹28和32多直径关系可以使紧固件的第一段24保持稳定并使紧固件与钻孔对中，保证紧固件同 轴地装入钻孔。随着紧固件进一步拧入钻孔，第一段螺纹切下细屑并存积在螺纹之间，如果继续如此，细屑会堵满螺纹之间从而防碍紧固件完全进入钻孔。但是第二段26的螺纹有较大的螺距作为收集和容纳切下的细屑的区域，因而切屑会进入这个区域不会防碍紧固件继续进入钻孔。
第一条螺纹28的切口30逐渐切削并从钻孔排除细屑，使螺纹稳定的拧入钻孔。当紧固件完全被拧入钻孔后，螺纹28上逐渐增加的直径使它具有大的卡紧力，因为最终的卡紧力与螺纹28和32的直径D1、D2以及钻孔34的直径D3有很大的关系，如图1所示。螺纹28的直径D1切入混凝土中，产生了基本的卡紧力。从图可见螺纹32切入混凝土中的程度较浅。
第一段和第二段的关系可以从每一段螺纹的螺距看出。在第一段24中，螺距P1由相邻螺纹齿顶的距离决定（如图1）;在第二段26中，由于没有中间螺纹，所以螺距P2约为P1的两倍。
依前述可见，本发明的紧固件结构简单，易于生产，具有已知结构无可比拟的优点，从而达到了本发明的目的。
尽管只示出和描述了本发明的一个最佳实施例，但可以想象：那些本领域的普通技术人员，在不脱离权利要求的精神和范围的情况下，可对本发明作出各种改进。本发明不受上述公开内容的约束，只受下列权利要求的限制。

Claims (6)

1、一种适用于拧入混凝土或砖石中的钻孔的紧固件，所述紧固件包括一头为帽头另一头为锥形尖端的杆，沿所述杆的长度从尖端到帽头具有均匀螺距的第一条螺纹以及在所述杆上的第二条螺纹，第二条螺纹从杆的尖端附近沿轴向基本延至杆的第一条螺纹长度的中点，其直径小于所述的第一条螺纹，由此限定了使紧固件自攻入混凝土钻孔的第一段螺纹，超出第二条螺纹末端以外的第一条螺纹部分构成了第二段螺纹，当紧固件拧入钻孔时，第二段螺纹可容纳和保存自攻过程中产生的细屑。
2、如权利要求1所述的紧固件，其特征在于：所述第二段螺纹的螺距大于所述第一段螺纹的螺距。
3、如权利要求2所述的紧固件，其特征在于：第二段螺纹的螺距约为第一段螺纹螺距的两倍。
4、如权利要求1所述的紧固件，其特征在于，所述杆在整个长度上直径基本一致，所述第一条螺纹的直径从紧固件的尖端到钉头方向逐渐增加，从而使紧固件的卡紧力增加。
5、一种适用于拧入混凝土或砖石中的钻孔的紧固件，所述紧固件包括一个杆、帽头和尖端，所述杆上包括靠近尖端的螺纹部分和靠近帽头的无螺纹部分，在螺纹部分上有两条螺纹，第一条螺纹具有均匀螺距，它连续分布于整个螺纹部分，第二条螺纹具有与第一条螺纹类似的均匀螺距，它仅沿着整个第一条螺纹长度的一部分分布在所述第一条螺纹中间，以限定第一段螺纹部分，所述第二条螺纹直径小于所述第一条螺纹直径。所述第一段螺纹部分适合于啮入和切入钻孔并保持紧固件与钻孔对中，所述第一条螺纹超出前述第一段螺纹部分的区域构成了第二段螺纹部分，第二段螺纹部分可容纳第一段螺纹部分切下的细屑。
6、如权利要求5所述的紧固件，其特征在于：沿所述杆伸长的第一段螺纹部分约为整个螺纹部分长度的一半。
CN93102184A 1992-03-02 1993-03-02 改进的混凝土紧固件 Pending CN1077005A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US844,201 1977-10-21
US07/844,201 US5190426A (en) 1992-03-02 1992-03-02 Concrete fastener

Publications (1)

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CN1077005A true CN1077005A (zh) 1993-10-06

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US (1) US5190426A (zh)
EP (1) EP0559381A1 (zh)
JP (1) JPH0610924A (zh)
CN (1) CN1077005A (zh)
AU (1) AU3280493A (zh)
BR (1) BR9300432A (zh)
CA (1) CA2088729C (zh)
FI (1) FI930919A (zh)
MX (1) MX9300716A (zh)
NO (1) NO930749L (zh)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1306176C (zh) * 2002-12-18 2007-03-21 伊利诺斯工具公司 螺纹紧固件
CN101054991B (zh) * 2006-04-13 2011-03-23 日本强力紧固件股份有限公司 脆材质工件紧固用自攻式螺钉
CN102472044A (zh) * 2009-07-03 2012-05-23 佩克集团有限公司 紧固板
CN103573774A (zh) * 2012-07-20 2014-02-12 百得有限公司 砖石用螺钉
CN104769210A (zh) * 2012-09-13 2015-07-08 朗伊尔特姆公司 具有多个螺纹接头的钻柱部件
CN105431643A (zh) * 2013-08-13 2016-03-23 费希尔厂有限责任两合公司 混凝土螺栓
CN106638980A (zh) * 2016-09-30 2017-05-10 中建三局集团有限公司 一种分段式可取出的混凝土预埋螺杆及其使用方法
CN107407311A (zh) * 2014-12-12 2017-11-28 Essve产品有限公司 混凝土螺钉
US10364618B2 (en) 2011-01-26 2019-07-30 Bly Ip Inc. Drill string components resistant to jamming
US10557316B2 (en) 2011-01-26 2020-02-11 Bly Ip Inc. Drill string components having multiple-thread joints
US10570676B2 (en) 2011-01-26 2020-02-25 Bly Ip Inc. Drill string components having multiple-thread joints

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0620911U (ja) * 1992-04-06 1994-03-18 株式会社ベンリー 打込みねじ
US5336015A (en) * 1992-11-25 1994-08-09 Ucar Carbon Technology Corporation Self centering electrode joint
EP0625400A1 (de) * 1993-05-04 1994-11-23 LUDWIG HETTICH SCHRAUBENFABRIK GmbH & Co. Werkzeug zum Erzeugen eines Innengewindes
GB9715779D0 (en) * 1997-07-26 1997-10-01 Unifix Ltd Improved fixing anchor
US7070376B1 (en) 1999-12-14 2006-07-04 Simpson Strong-Tie Company, Inc. Self-drilling, self-anchoring fastener for concrete
US6468277B1 (en) 2000-04-04 2002-10-22 Ethicon, Inc. Orthopedic screw and method
CA2306966A1 (en) * 2000-04-27 2001-10-27 David Janeway Apparatus and method for cast panel fabrication and post-formed fixturing
AUPQ919200A0 (en) * 2000-08-04 2000-08-24 Hanstock Fasteners Pty Limited Improvements relating to screws for concrete and masonry
CN2545415Y (zh) * 2002-04-11 2003-04-16 久可工业股份有限公司 具有不同高低螺牙之三线螺纹双头固定螺丝
US20050021036A1 (en) * 2003-07-21 2005-01-27 Whitmore Robin C. Self-drilling, self-tapping bone screw
US8540755B2 (en) * 2003-07-21 2013-09-24 Robin C. Whitmore Self-drilling self-tapping bone screw
DE102005017596A1 (de) * 2005-04-16 2006-10-19 Fischerwerke Artur Fischer Gmbh & Co. Kg Gewindeschneidende Betonschraube
US7950888B2 (en) * 2006-04-13 2011-05-31 Japan Power Fastening Co., Ltd. Self-penetrating screw
US20080118332A1 (en) * 2006-11-16 2008-05-22 David Lamb Drywall screw
US20080166204A1 (en) * 2007-01-05 2008-07-10 Nilsen Martin J Fastening device and method of fabricating the same
KR101041373B1 (ko) * 2009-04-30 2011-06-15 김민석 이중 나선형을 갖는 세트스크루를 포함하는 척추 고정장치
WO2011063138A1 (en) * 2009-11-18 2011-05-26 Simpson Strong-Tie Company, Inc. Fastener with hardened threads
DE102010031410A1 (de) * 2010-07-15 2012-01-19 TOGE-Dübel A. Gerhard KG Selbstzentrierende Schraube
DE102012200462A1 (de) * 2012-01-13 2013-07-18 Hilti Aktiengesellschaft Spreizanker
CN103452992B (zh) * 2013-09-17 2016-01-20 上海美固澄梵紧固件有限公司 一种锚栓
US9475109B2 (en) 2013-12-31 2016-10-25 Simpson Strong-Tie Company, Inc. Method of manufacturing a hollow externally threaded fastener
CN109764049A (zh) * 2017-11-09 2019-05-17 丹阳市日晟工业设备有限公司 一种螺纹渐变的螺栓
DE102018114983A1 (de) 2018-06-21 2019-12-24 Ejot Gmbh & Co. Kg Selbstfurchende Schraube
WO2021159181A1 (en) * 2020-02-11 2021-08-19 B.M.B Investments Pty Ltd A multipurpose screw

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE54903C (de) * THE AMERICAN screw COMPANY in Providence, Rhode Island, V. St. A Holzschraube mit flachem Hülfsgewinde zwischen den scharfen Go^vindegängen
US3861269A (en) * 1971-01-04 1975-01-21 Superior Dry Wall Screw Mfg Co Fastener with improved thread construction
US3703843A (en) * 1971-01-04 1972-11-28 Msl Ind Inc Fastener with improved thread construction
USRE28111E (en) * 1971-01-04 1974-08-13 Fastener with improved thread construction
US3937119A (en) * 1974-12-23 1976-02-10 Illinois Tool Works, Inc. Masonry anchor device
DE2603217C2 (de) * 1976-01-29 1982-06-16 Manfred 7290 Freudenstadt Gehring Schraube zum Befestigen von Fassadenplatten
US4034641A (en) * 1976-07-09 1977-07-12 Illinois Tool Works Inc. Self-drilling and tapping masonry anchor
US4439077A (en) * 1982-02-11 1984-03-27 Godsted Kent B Concrete screw anchor
IT1216901B (it) * 1987-03-06 1990-03-14 Kilton Srl Vite perfezionata.
DE3913299A1 (de) * 1989-04-22 1990-10-25 Itw Ateco Gmbh Verfahren und vorrichtung zum formen eines gewindes in gestein oder beton
DE3926951C2 (de) * 1989-08-14 1995-11-16 Wakai Sangyo Kk Klemmschraube
US5061136A (en) * 1990-10-03 1991-10-29 Emhart Inc. Masonry screw anchor

Cited By (17)

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CN1306176C (zh) * 2002-12-18 2007-03-21 伊利诺斯工具公司 螺纹紧固件
CN101054991B (zh) * 2006-04-13 2011-03-23 日本强力紧固件股份有限公司 脆材质工件紧固用自攻式螺钉
CN102472044A (zh) * 2009-07-03 2012-05-23 佩克集团有限公司 紧固板
CN102472044B (zh) * 2009-07-03 2013-12-04 佩克集团有限公司 紧固板
US11898404B2 (en) 2011-01-26 2024-02-13 Boart Longyear Company Drill string components having multiple-thread joints
US10570676B2 (en) 2011-01-26 2020-02-25 Bly Ip Inc. Drill string components having multiple-thread joints
US10557316B2 (en) 2011-01-26 2020-02-11 Bly Ip Inc. Drill string components having multiple-thread joints
US10364618B2 (en) 2011-01-26 2019-07-30 Bly Ip Inc. Drill string components resistant to jamming
CN103573774A (zh) * 2012-07-20 2014-02-12 百得有限公司 砖石用螺钉
CN104769210B (zh) * 2012-09-13 2018-09-21 朗伊尔特姆公司 具有多个螺纹接头的钻柱部件
CN104769210A (zh) * 2012-09-13 2015-07-08 朗伊尔特姆公司 具有多个螺纹接头的钻柱部件
CN105431643B (zh) * 2013-08-13 2017-05-24 费希尔厂有限责任两合公司 混凝土螺栓
TWI617746B (zh) * 2013-08-13 2018-03-11 費希爾廠有限責任兩合公司 混凝土螺絲
CN105431643A (zh) * 2013-08-13 2016-03-23 费希尔厂有限责任两合公司 混凝土螺栓
CN107407311A (zh) * 2014-12-12 2017-11-28 Essve产品有限公司 混凝土螺钉
CN106638980B (zh) * 2016-09-30 2018-11-09 中建三局集团有限公司 一种分段式可取出的混凝土预埋螺杆及其使用方法
CN106638980A (zh) * 2016-09-30 2017-05-10 中建三局集团有限公司 一种分段式可取出的混凝土预埋螺杆及其使用方法

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BR9300432A (pt) 1993-09-08
JPH0610924A (ja) 1994-01-21
FI930919A (fi) 1993-09-03
CA2088729A1 (en) 1993-09-03
EP0559381A1 (en) 1993-09-08
FI930919A0 (fi) 1993-03-02
MX9300716A (es) 1993-11-01
AU3280493A (en) 1993-09-16
NO930749D0 (no) 1993-03-01
US5190426A (en) 1993-03-02
NO930749L (no) 1993-09-03
CA2088729C (en) 1996-05-07

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