JP2008093824A - Hydraulic clamping device - Google Patents

Hydraulic clamping device Download PDF

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Publication number
JP2008093824A
JP2008093824A JP2007257254A JP2007257254A JP2008093824A JP 2008093824 A JP2008093824 A JP 2008093824A JP 2007257254 A JP2007257254 A JP 2007257254A JP 2007257254 A JP2007257254 A JP 2007257254A JP 2008093824 A JP2008093824 A JP 2008093824A
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Japan
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intermediate element
hydraulic
case
bolt
hydraulic piston
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JP2007257254A
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Japanese (ja)
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JP5128887B2 (en
JP2008093824A5 (en
Inventor
Michael Baldermann
バルダーマン ミヒァエル
Peter Druckmiller
ドゥルックミラー ペーター
Werner Micheler
ミヒェラー ヴェルナー
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MAN Energy Solutions France SAS
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MAN Diesel SA
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B29/00Accessories
    • B25B29/02Bolt tensioners
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06Screw or nut setting or loosening machines
    • B23P19/067Bolt tensioners

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Actuator (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To give a hydraulic clamping device (10) rupture protection function in the hydraulic clamping device (10) provided with a hydraulic piston (13) urged by a hydraulic medium in which the hydraulic piston (13) transmits clamping force applied to the piston (13) to an end (20) of a bolt (11) to be clamped through an intermediate element (14), and the hydraulic piston (13) and the intermediate element (14) are surrounded by a case (15). <P>SOLUTION: In the intermediate element (14) for transmitting the clamping force, a first end (18) is thread-inserted to the hydraulic piston (13) and a second end (19) is thread-inserted to the bolt (11). A narrow part (21) is auxiliarily provided on the case (15) adjacent to the first end (18) of the intermediate element (14) and a retaining pin (22) engaged with a recession portion (23) of the intermediate element (14) is auxiliarily provided adjacent to the second end (19) of the intermediate element (14) respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は請求項1の前文に記載の液圧式締付け装置に関する。   The invention relates to a hydraulic clamping device according to the preamble of claim 1.

特許文献1により、シリンダとして形成したケースで取り囲まれた液圧ピストンを有する液圧式ボルト締付け装置が公知である。中間要素を介して被締付けボルトに伝達される圧力又は締付け力を液圧ピストンに用意すべく、液圧ピストンは液圧媒体で付勢される。中間要素は、特許文献1では、被締付けボルトの一端にねじ込まれるねじ付きブッシュとして形成されている。ねじ付きブッシュの破断時、ねじ付きブッシュの下部破片がピストン上に留まり、ねじ付きブッシュの上部破片の飛散はキャップにより防止できる。ねじ付きブッシュの破断時、液圧ピストンは円錐面を介してねじ付きブッシュの下端に保持される。このため、ねじ付きブッシュの破断時、破片の飛散を防止できる。
独国特許第4341707号明細書
From US Pat. No. 6,057,049, a hydraulic bolt clamping device is known which has a hydraulic piston surrounded by a case formed as a cylinder. The hydraulic piston is biased with a hydraulic medium in order to provide the hydraulic piston with the pressure or clamping force that is transmitted to the clamping bolt via the intermediate element. In Patent Document 1, the intermediate element is formed as a threaded bush that is screwed into one end of a bolt to be tightened. When the threaded bush breaks, the lower debris of the threaded bush remains on the piston, and the upper part of the threaded bush can be prevented from scattering by the cap. When the threaded bush is broken, the hydraulic piston is held at the lower end of the threaded bush via a conical surface. For this reason, scattering of fragments can be prevented when the threaded bush is broken.
German Patent No. 4341707

本発明の課題は、上述の問題から出発して、破壊防護機能を有する新規な液圧式締付け装置を提供することにある。   The object of the present invention is to provide a novel hydraulic clamping device having a destructive protection function, starting from the above-mentioned problems.

この課題は請求項1に記載の液圧式締付け装置によって解決される。本発明に基づき、締付け力を伝達する中間要素が、その第1端部で液圧ピストンにねじ込まれ、第2端部でボルトにねじ込まれ、ケースに、中間要素の第1端部に隣接して狭隘部が、中間要素の第2端部に隣接して中間要素の凹所に係合する保持ピンが、各々付設される。   This problem is solved by the hydraulic clamping device according to claim 1. In accordance with the present invention, an intermediate element for transmitting a clamping force is screwed into a hydraulic piston at its first end, screwed into a bolt at its second end, adjacent to the case at the first end of the intermediate element. A holding pin is attached to each of the narrowed portions and engages with the recess of the intermediate element adjacent to the second end of the intermediate element.

本発明に基づく液圧式締付け装置の場合、破壊防護機能が比較的単純な構造手段で実現できる。中間要素或いは液圧ピストンの破断時、破片の飛散を防止するための特別な捕捉装置は不要である。   In the case of the hydraulic clamping device according to the invention, the destructive protection function can be realized with relatively simple structural means. When the intermediate element or hydraulic piston is broken, no special trapping device is required to prevent the fragments from scattering.

本発明の有利な実施態様では、ケースが、液圧ピストンと中間要素を取り囲む特に円筒状のケース部分と蓋とを有し、該蓋は、保持ピンを介してケース部分に固定される。   In a preferred embodiment of the invention, the case has a particularly cylindrical case part surrounding the hydraulic piston and the intermediate element and a lid, which is fixed to the case part via a holding pin.

本発明の有利な実施態様を従属請求項および以下の説明で明らかにする。以下図を参照して本発明の実施例を詳細に説明するが、本発明はこの実施例に限定されない。   Advantageous embodiments of the invention are revealed in the dependent claims and the following description. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiments.

本発明は液圧式締付け装置、即ち液圧式ボルト締付け装置に関する。図1は、本発明に基づく締付け装置10を、ボルト11と該ボルト11で締め付ける部品12と共に示す。   The present invention relates to a hydraulic clamping device, that is, a hydraulic bolt clamping device. FIG. 1 shows a tightening device 10 according to the invention, together with a bolt 11 and a part 12 fastened with the bolt 11.

液圧式締付け装置10は液圧ピストン13を有し、該ピストン13は、ボルト11に対する締付け力を用意するために液圧媒体で付勢される。液圧ピストン13に作用する締付け力は、伸びナットとして形成された中間要素14を介してボルト11に伝達される。   The hydraulic clamping device 10 has a hydraulic piston 13 that is biased with a hydraulic medium to provide a clamping force for the bolt 11. The clamping force acting on the hydraulic piston 13 is transmitted to the bolt 11 via an intermediate element 14 formed as an extension nut.

液圧ピストン13並びに伸びナットとして形成された中間要素14は、図1においてケース15で取り囲まれ、該ケース15は円筒状ケース部分16と蓋17を備える。   The hydraulic piston 13 and the intermediate element 14 formed as an extension nut are surrounded by a case 15 in FIG. 1, which comprises a cylindrical case part 16 and a lid 17.

伸びナットとして形成された中間要素14は、その第1端部18が液圧ピストン13にねじ込まれ、第2端部19が被締付けボルト11の端部20にねじ込まれている。ケース15、即ち、その円筒状ケース部分16は、伸びナットとして形成された中間要素14の第1端部18に隣接して、徐々に狭まる内周面部ないし狭隘部21を有している。ケース15、即ち、その円筒状ケース部分16は、伸びナットとして形成された中間要素14の第2端部19に隣接し、中間要素14の凹所23に係合する保持ピン22を有している。蓋17は円筒状ケース部分16に保持ピン24を介して固定されている。   The intermediate element 14 formed as an extension nut has a first end 18 screwed into the hydraulic piston 13 and a second end 19 screwed into the end 20 of the bolt 11 to be tightened. The case 15, that is, its cylindrical case portion 16, has an inner peripheral surface portion or a narrowed portion 21 that gradually narrows adjacent to the first end 18 of the intermediate element 14 formed as an extension nut. The case 15, i.e. its cylindrical case part 16, has a holding pin 22 which is adjacent to the second end 19 of the intermediate element 14 formed as an extension nut and engages a recess 23 in the intermediate element 14. Yes. The lid 17 is fixed to the cylindrical case portion 16 via a holding pin 24.

図1において、液圧式締付け装置10とボルト11で締め付けるべき部品12との間に、加圧部材25が配置され、この加圧部材25は、図1において、ボルト11の端部20にねじ込まれたナット26で包囲されている。   In FIG. 1, a pressurizing member 25 is disposed between the hydraulic clamping device 10 and the component 12 to be tightened with the bolt 11, and the pressurizing member 25 is screwed into the end 20 of the bolt 11 in FIG. 1. Surrounded by a nut 26.

液圧式締付け装置10の運転中、伸びナットとして形成された中間要素14が液圧ピストン13とボルト11の端部20との間で破断した際、ケース15の狭隘部20が、中間要素14の上部破片が液圧ピストン13と共に飛散するのを防ぐ。ケース15は、ボルト11上に留まっている中間要素14の下部破片に、保持ピン22を介して保持される。   During operation of the hydraulic clamping device 10, when the intermediate element 14 formed as an extension nut breaks between the hydraulic piston 13 and the end 20 of the bolt 11, the narrow part 20 of the case 15 Prevents upper debris from splashing with the hydraulic piston 13. The case 15 is held by a lower fragment of the intermediate element 14 that remains on the bolt 11 via a holding pin 22.

これに対して、締付け装置10の運転中、中間要素14の上側で液圧ピストン13が破断したとき、蓋17の保持ピン24が、液圧ピストン13がケース15から外れることを防止する。またケース15は、伸びナットとして形成された中間要素14の凹所23に係合する保持ピン22を介してその位置に保持される。   On the other hand, when the hydraulic piston 13 is broken on the upper side of the intermediate element 14 during operation of the tightening device 10, the holding pin 24 of the lid 17 prevents the hydraulic piston 13 from being removed from the case 15. The case 15 is held in that position via a holding pin 22 that engages a recess 23 in the intermediate element 14 formed as an extension nut.

それに応じて、本発明に基づく液圧式締付け装置10は、中間要素14の破断時並びに液圧ピストン13の破断時に破片の飛散を防止すべく、中間要素14並びに液圧ピストン13に対する破壊防護機能を有している。   Accordingly, the hydraulic clamping device 10 according to the present invention has a destructive protection function for the intermediate element 14 and the hydraulic piston 13 in order to prevent debris from being scattered when the intermediate element 14 is broken and when the hydraulic piston 13 is broken. Have.

本発明に基づく液圧式ボルト締付け装置の部分断面図。1 is a partial cross-sectional view of a hydraulic bolt tightening device according to the present invention.

符号の説明Explanation of symbols

10 液圧式締付け装置、11 ボルト、12 部品、13 液圧ピストン、14 中間要素、15 ケース、16 ケース部分、17 蓋、18 中間要素の第1端部、19 中間要素の第2端部、20 ボルトの端部、21 狭隘部、22 保持ピン、23 凹所、24 保持ピン、25 加圧部材、26 ナット DESCRIPTION OF SYMBOLS 10 Hydraulic type clamping device, 11 bolts, 12 parts, 13 Hydraulic piston, 14 Intermediate element, 15 Case, 16 Case part, 17 Lid, 18 First end of intermediate element, 19 Second end of intermediate element, 20 Bolt end, 21 Narrow, 22 Holding pin, 23 Recess, 24 Holding pin, 25 Pressure member, 26 Nut

Claims (4)

液圧媒体で付勢される液圧ピストンを備え、該液圧ピストンが、その液圧ピストンに作用する締付け力を被締付けボルトの端部に中間要素を介して伝達し、液圧ピストンおよび中間要素がケースで取り囲まれている液圧式締付け装置において、
締付け力を伝達する中間要素(14)が、その第1端部(18)で液圧ピストン(13)にねじ込まれ、第2端部(19)でボルト(11)にねじ込まれ、ケース(15)に、中間要素(14)の第1端部(18)に隣接して狭隘部(21)が、中間要素(14)の第2端部(19)に隣接して中間要素(14)の凹所(23)に係合する保持ピン(22)が、各々付設されたことを特徴とする液圧式締付け装置。
A hydraulic piston energized by a hydraulic medium, and the hydraulic piston transmits a tightening force acting on the hydraulic piston to an end of a bolt to be tightened via an intermediate element. In a hydraulic clamping device in which the element is surrounded by a case,
The intermediate element (14) for transmitting the clamping force is screwed into the hydraulic piston (13) at its first end (18), screwed into the bolt (11) at its second end (19), and the case (15 ), The narrow portion (21) adjacent to the first end (18) of the intermediate element (14), and the intermediate element (14) adjacent to the second end (19) of the intermediate element (14). A hydraulic clamping device, wherein holding pins (22) that engage with the recesses (23) are respectively attached.
締付け力を伝達する中間要素(14)が伸びナットとして形成されたことを特徴とする請求項1記載の締付け装置。   2. Fastening device according to claim 1, characterized in that the intermediate element (14) for transmitting the tightening force is formed as an extension nut. ケース(15)が、液圧ピストン(13)と中間要素(14)とを取り囲む特に円筒状のケース部分(16)と蓋(17)とを有し、該蓋(17)が保持ピン(24)を介してケース部分(16)に固定されたことを特徴とする請求項1又は2記載の締付け装置。   The case (15) has a particularly cylindrical case part (16) and a lid (17) surrounding the hydraulic piston (13) and the intermediate element (14), the lid (17) being a retaining pin (24). The fastening device according to claim 1 or 2, wherein the fastening device is fixed to the case portion (16) via a). ケース(15)とボルト(11)で締め付けるべき部品(12)との間に、ボルト(11)にねじ込まれたナット(16)を包囲する加圧部材(25)が配置されたことを特徴とする請求項1から3の1つに記載の締付け装置。   A pressure member (25) surrounding the nut (16) screwed into the bolt (11) is disposed between the case (15) and the part (12) to be tightened with the bolt (11). The clamping device according to claim 1.
JP2007257254A 2006-10-07 2007-10-01 Hydraulic clamping device Expired - Fee Related JP5128887B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006047512.7A DE102006047512B4 (en) 2006-10-07 2006-10-07 Hydraulic tensioning device
DE102006047512.7 2006-10-07

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JP2008093824A true JP2008093824A (en) 2008-04-24
JP2008093824A5 JP2008093824A5 (en) 2009-11-12
JP5128887B2 JP5128887B2 (en) 2013-01-23

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KR (1) KR101529310B1 (en)
CN (1) CN101157211A (en)
DE (1) DE102006047512B4 (en)
FI (1) FI125539B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013530056A (en) * 2010-06-16 2013-07-25 イーテーハー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディトゲゼルシャフト Screw tightening device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103252641A (en) * 2013-05-30 2013-08-21 太原重工股份有限公司 Hydraulic pre-tightening tool
KR101331959B1 (en) * 2013-07-09 2013-11-21 대아기기(주) Convenient tensioner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4512719Y1 (en) * 1965-07-30 1970-06-02
JPS62113197U (en) * 1985-12-28 1987-07-18
DE9316464U1 (en) * 1993-10-28 1994-01-20 Wagner, Paul-Heinz, 53804 Much Tensioning device for stretching screws
JPH09502934A (en) * 1994-07-15 1997-03-25 ハイドラ−タイト・リミテッド Hydraulic bolt tensioning device
JPH09507039A (en) * 1993-12-08 1997-07-15 フランク ホーマン Hydraulic screw rod tightening device
WO2005123345A1 (en) * 2004-06-17 2005-12-29 John Wentworth Bucknell Improvements to hydraulic tensioning jacks

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341707C3 (en) * 1993-11-12 1999-02-11 Frank Hohmann Hydraulic threaded bolt clamping device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4512719Y1 (en) * 1965-07-30 1970-06-02
JPS62113197U (en) * 1985-12-28 1987-07-18
DE9316464U1 (en) * 1993-10-28 1994-01-20 Wagner, Paul-Heinz, 53804 Much Tensioning device for stretching screws
JPH09507039A (en) * 1993-12-08 1997-07-15 フランク ホーマン Hydraulic screw rod tightening device
JPH09502934A (en) * 1994-07-15 1997-03-25 ハイドラ−タイト・リミテッド Hydraulic bolt tensioning device
WO2005123345A1 (en) * 2004-06-17 2005-12-29 John Wentworth Bucknell Improvements to hydraulic tensioning jacks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013530056A (en) * 2010-06-16 2013-07-25 イーテーハー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンディトゲゼルシャフト Screw tightening device

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Publication number Publication date
DE102006047512B4 (en) 2014-01-16
FI125539B (en) 2015-11-13
JP5128887B2 (en) 2013-01-23
CN101157211A (en) 2008-04-09
FI20070648A (en) 2008-04-08
KR101529310B1 (en) 2015-06-16
FI20070648A0 (en) 2007-08-28
DE102006047512A1 (en) 2008-04-10
KR20080031775A (en) 2008-04-11

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