JP4755721B1 - Column puller - Google Patents

Column puller Download PDF

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JP4755721B1
JP4755721B1 JP2010230111A JP2010230111A JP4755721B1 JP 4755721 B1 JP4755721 B1 JP 4755721B1 JP 2010230111 A JP2010230111 A JP 2010230111A JP 2010230111 A JP2010230111 A JP 2010230111A JP 4755721 B1 JP4755721 B1 JP 4755721B1
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columnar object
column
pulling
airbag
support
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JP2012082623A (en
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清二 上本
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West Nippon Expressway Maintenance Kansai Co Ltd
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West Nippon Expressway Maintenance Kansai Co Ltd
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Priority to PCT/JP2011/052565 priority patent/WO2012049862A1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0484—Installing; Repairing; Adjusting
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

【課題】油圧を用いずに柱状物を引き抜く柱引抜装置を提供する。
【解決手段】柱引抜装置１は、柱状物Ｐを引き抜くためのものであって、柱状物Ｐを保持する保持部４及び保持部４から張り出した張出部５を有する柱引抜治具２と、高さ方向に膨張されるエアバッグ３とを備える。張出部５は、エアバッグ３上に配置される。これにより、柱引抜装置１のエアバッグ３が膨張され、柱状物Ｐを保持した柱引抜治具２を押し上げ、柱状物Ｐが引き抜かれる。
【選択図】図１
A column pulling apparatus for pulling a columnar object without using hydraulic pressure is provided.
A column pulling device 1 is for pulling a columnar object P, and has a holding part 4 for holding the columnar object P and a column pulling jig 2 having an overhanging part 5 protruding from the holding part 4. The airbag 3 is inflated in the height direction. The overhang portion 5 is disposed on the airbag 3. As a result, the airbag 3 of the column pulling apparatus 1 is inflated, and the column pulling jig 2 holding the columnar P is pushed up, and the columnar P is pulled out.
[Selection] Figure 1

Description

本発明は、柱状物を土中等から引き抜くための柱引抜装置に関する。   The present invention relates to a column drawing apparatus for drawing a columnar object from the soil or the like.

進行方向を誤った車両が路外へ逸脱することを防ぐため、道路に防護柵（ガードレール）が設けられる。防護柵は、ビーム等と、ビーム等を支持する支柱から構成される。支柱は、老朽劣化した場合や車両の衝突等によって損傷した場合に取り替えられる。支柱は、下部が土中に埋め込まれたものや、橋梁等の構造物上に設けられた穴に挿入され、穴との隙間にアスファルト又はモルタル等が充填されたものがある。支柱を取り替える際、既設の支柱が土中等から引き抜かれ、新しい支柱が立設される。   In order to prevent a vehicle having the wrong traveling direction from deviating from the road, a guard fence is provided on the road. A guard fence is comprised from the support | pillar which supports a beam etc. and a beam. The strut is replaced when it has deteriorated due to deterioration or has been damaged by a vehicle collision or the like. There are pillars in which the lower part is buried in the soil, and pillars are inserted into holes provided on structures such as bridges, and the gap between the pillars is filled with asphalt or mortar. When replacing the struts, the existing struts are pulled out from the soil, and new struts are erected.

支柱を引き抜く方法として、クレーンを搭載したトラックで施工場所に行き、クレーンで支柱を吊り上げる方法がある。例えば、最大積載量４トン〜８トンのトラックに搭載した２．９トン吊りのクレーンを用いた場合、クレーンは、ブームを５メートル伸ばすと、最大約１．５トンしか吊れない。支柱を引き抜くために必要な力は、約２０トン（約２００ｋＮ）に達する可能性がある。支柱をクレーンを用いただけでは引き抜けない場合、支柱の周囲の地面等を掘ってから引き抜いており、引き抜きに時間と労力がかかる。   As a method of pulling out the support column, there is a method of going to the construction site with a truck equipped with a crane and lifting the support column with the crane. For example, when a 2.9-ton crane mounted on a truck having a maximum loading capacity of 4 to 8 tons is used, the crane can only lift about 1.5 tons when the boom is extended 5 meters. The force required to pull out the struts can reach about 20 tons (about 200 kN). If the column cannot be pulled out with just a crane, it is pulled out after digging the ground around the column, which takes time and effort.

また、クレーンを用いずに支柱等の柱状物を引き抜く装置として、油圧シリンダを有する柱引抜装置が知られている（例えば、特許文献１参照）。このような柱引抜装置においては、柱引抜装置を運搬する車両の油圧回路から油圧シリンダに油圧を分岐するので、車両の改造コストがかかる。また、必要な引抜力を得ようとして油圧を高めると、油圧シリンダが土にめり込み、柱状物の引き抜きが困難になる場合がある。   Further, a column pulling device having a hydraulic cylinder is known as a device for pulling a columnar object such as a column without using a crane (see, for example, Patent Document 1). In such a column pulling device, the hydraulic pressure is branched from the hydraulic circuit of the vehicle carrying the column pulling device to the hydraulic cylinder, so that the vehicle is costly modified. Further, if the hydraulic pressure is increased in order to obtain a required pulling force, the hydraulic cylinder may sink into the soil and it may be difficult to pull out the columnar object.

特開２００４−１７６３８２号公報JP 2004-176382 A

本発明は、上記問題を解決するものであり、油圧を用いずに柱状物を引き抜く柱引抜装置を提供することを目的とする。   The present invention solves the above-described problem, and an object thereof is to provide a column pulling apparatus that pulls a columnar object without using hydraulic pressure.

本発明の柱引抜装置は、柱状物を引き抜くためのものであって、柱状物を保持する保持部及び前記保持部から張り出した張出部を有する柱引抜治具と、高さ方向に膨張されるエアバッグとを備え、前記張出部は、前記エアバッグ上に配置されることを特徴とする。   The column pulling device of the present invention is for pulling out a columnar object, and is expanded in the height direction with a column pulling jig having a holding part for holding the columnar object and an overhanging part protruding from the holding part. The overhanging portion is disposed on the airbag.

この柱引抜装置において、前記保持部は、柱状物を挟持する複数の楔状部材と、前記楔状部材を支持する支持部とを有し、前記各々の楔状部材は、下端に向けて柱状物側に漸近するテーパ面を有し、前記支持部は、前記テーパ面と接する内面が形成された枠状であり、前記張出部は、前記支持部から張り出していることが好ましい。   In this column drawing apparatus, the holding portion includes a plurality of wedge-shaped members that sandwich the column-shaped object, and a support portion that supports the wedge-shaped member, and each of the wedge-shaped members faces the column-shaped object side toward the lower end. It is preferable that the tapered portion has an asymptotic taper surface, the support portion has a frame shape formed with an inner surface in contact with the tapered surface, and the overhang portion projects from the support portion.

この柱引抜装置において、前記保持部は、中空の柱状物を内径側から保持する内径チャック部と、前記内径チャック部を引っ張るための引張軸と、前記引張軸を支持する支持部とを有し、前記内径チャック部は、上端に向けて断面が漸次縮小するテーパ孔を有し、前記引張軸は、前記テーパ孔に嵌合する嵌合部を有し、前記張出部は、前記支持部から張り出していることが好ましい。   In this column drawing apparatus, the holding portion includes an inner diameter chuck portion that holds a hollow columnar object from the inner diameter side, a tension shaft for pulling the inner diameter chuck portion, and a support portion that supports the tension shaft. The inner diameter chuck portion has a tapered hole whose cross section gradually decreases toward the upper end, the tension shaft has a fitting portion that fits into the tapered hole, and the overhang portion is the support portion. It is preferable that it protrudes from.

この柱引抜装置において、前記内径チャック部及び引張軸は、柱状物を挟持する複数の楔状部材に取替可能とされ、前記各々の楔状部材は、下端に向けて柱状物側に漸近するテーパ面を有し、前記支持部は、前記テーパ面に接する内面が形成された枠状であることが好ましい。   In this column drawing apparatus, the inner diameter chuck portion and the tension shaft can be replaced with a plurality of wedge-shaped members that sandwich the column-shaped object, and each of the wedge-shaped members gradually approaches the columnar object side toward the lower end. It is preferable that the support portion has a frame shape in which an inner surface in contact with the tapered surface is formed.

この柱引抜装置において、前記支持部は、複数の支持部材を有し、該支持部材が結合されることによって枠状とされることが好ましい。   In this column drawing apparatus, it is preferable that the support portion has a plurality of support members and is formed into a frame shape by combining the support members.

この柱引抜装置において、前記エアバッグは、収縮した状態において板状の外形を有することが好ましい。   In this column drawing apparatus, it is preferable that the airbag has a plate-like outer shape in a contracted state.

本発明の柱引抜装置によれば、エアバッグが膨張されることにより、柱状物を保持した柱引抜治具を押し上げるので、油圧を用いずに柱状物を引き抜くことができる。   According to the column pulling apparatus of the present invention, the column pulling jig holding the columnar object is pushed up by inflating the airbag, so that the columnar object can be pulled out without using hydraulic pressure.

本発明の第１の実施形態に係る柱引抜装置の斜視図。The perspective view of the column drawing-out apparatus which concerns on the 1st Embodiment of this invention. 同柱引抜装置の平面図。The top view of the pillar extraction apparatus. 同柱引抜装置の分解斜視図。The disassembled perspective view of the column drawing apparatus. 同柱引抜装置におけるエアバッグが収縮したときの正面図。The front view when the airbag in the same column extracting device contracts. 同柱引抜装置におけるエアバッグが膨張したときの正面図。The front view when the airbag in the same column extracting device expand | swells. 本発明の第２の実施形態に係る柱引抜装置の分解斜視図。The disassembled perspective view of the column drawing-out apparatus which concerns on the 2nd Embodiment of this invention. 同柱引抜装置の斜視図。The perspective view of the pillar extraction apparatus. 同柱引抜装置の平面図。The top view of the pillar extraction apparatus. 同柱引抜装置におけるエアバッグが収縮したときの正面図。The front view when the airbag in the same column extracting device contracts. 同柱引抜装置におけるエアバッグが膨張したときの正面図。The front view when the airbag in the same column extracting device expand | swells.

（第１の実施形態）
本発明の第１の実施形態に係る柱引抜装置を図１乃至図５を参照して説明する。図１及び図２に示されるように、柱引抜装置１は、柱状物Ｐを引き抜くためのものであり、柱引抜治具２とエアバッグ３とを備える。柱状物Ｐは、本発明の構成要素ではない。柱引抜治具２は、柱状物Ｐを保持する保持部４と、保持部４から張り出した張出部５とを有する。エアバッグ３は、高さ方向に膨張されるものである。張出部５は、エアバッグ３上に配置される。 (First embodiment)
A column drawing apparatus according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1 and FIG. 2, the column pulling apparatus 1 is for pulling out the columnar object P, and includes a column pulling jig 2 and an airbag 3. The columnar object P is not a component of the present invention. The column drawing jig 2 includes a holding portion 4 that holds the columnar object P and an overhang portion 5 that protrudes from the holding portion 4. The airbag 3 is inflated in the height direction. The overhang portion 5 is disposed on the airbag 3.

図３に示されるように、保持部４は、柱状物Ｐを挟持する複数の楔状部材６と、楔状部材６を支持する支持部４１とを有する。楔状部材６は、下端に向けて柱状物側に漸近するテーパ面６１を有する。支持部４１は、テーパ面６１と接する内面４２が形成された枠状であり、複数の支持部材４１ａ、４１ｂを有し、この支持部材４１ａ、４１ｂが結合されることによって枠状とされる。張出部５は、支持部４１から張り出している。   As shown in FIG. 3, the holding portion 4 includes a plurality of wedge-shaped members 6 that sandwich the columnar object P, and a support portion 41 that supports the wedge-shaped member 6. The wedge-shaped member 6 has a tapered surface 61 that gradually approaches the columnar object side toward the lower end. The support portion 41 has a frame shape in which an inner surface 42 in contact with the tapered surface 61 is formed. The support portion 41 has a plurality of support members 41a and 41b, and is formed into a frame shape by combining the support members 41a and 41b. The overhang portion 5 overhangs from the support portion 41.

柱状物Ｐは、例えばガードレールの支柱であり、下部が土中又は構造物等に埋設され、上部が地上に露出した状態で立設されている。柱引抜装置１は、柱状物Ｐを土中等から引き抜くために用いられる。本実施形態では、柱引抜装置１の柱引抜治具２は、柱状物Ｐの地上部分に取り付けられる。   The columnar object P is, for example, a guard rail column, and is erected with the lower part buried in the soil or a structure and the upper part exposed to the ground. The column drawing device 1 is used for drawing out the columnar object P from the soil or the like. In the present embodiment, the column drawing jig 2 of the column drawing apparatus 1 is attached to the ground portion of the columnar object P.

柱引抜治具２の保持部４は、柱状物Ｐを押圧して保持するものである。保持部４の楔状部材６は、例えば、ステンレス（ＳＵＳ３０３）を成形したものであり、本実施形態では２つ設けた。各々の楔状部材６は、柱状物Ｐを押圧する略半円筒内面形状の押圧面６２を有する。押圧面６２には、滑り止めのための凹凸が形成される。テーパ面６１は、各々の楔状部材６における押圧面６２に対向する面に形成される。各々の楔状部材６の上面には、取っ手状のワイヤ６３が取り付けられる。ワイヤ６３は、楔状部材６を支持部４１から取り外す時に把持される。   The holding part 4 of the column drawing jig 2 presses and holds the columnar object P. For example, the wedge-shaped member 6 of the holding unit 4 is formed of stainless steel (SUS303), and two are provided in the present embodiment. Each wedge-shaped member 6 has a substantially semi-cylindrical inner surface pressing surface 62 that presses the columnar object P. The pressing surface 62 is provided with unevenness for preventing slipping. The tapered surface 61 is formed on the surface of each wedge-shaped member 6 that faces the pressing surface 62. A handle-like wire 63 is attached to the upper surface of each wedge-shaped member 6. The wire 63 is gripped when the wedge-shaped member 6 is removed from the support portion 41.

保持部４の支持部４１は、平面視でＵ字状の支持部材４１ａと長尺状の支持部材４１ｂとを有し、支持部材４１ａ、４１ｂが結合され、アイボルト４３によって締結される。アイボルト４３は、ねじ山を省略してもよい。内面４２は、楔状部材６のテーパ面６１と面接触するように、下端に向けて柱状物側に漸近している。   The support part 41 of the holding part 4 has a U-shaped support member 41 a and a long support member 41 b in plan view, and the support members 41 a and 41 b are coupled and fastened by an eyebolt 43. The eyebolt 43 may omit a thread. The inner surface 42 is asymptotic to the columnar object side toward the lower end so as to come into surface contact with the tapered surface 61 of the wedge-shaped member 6.

張出部５は、支持部材４１ａ、４１ｂの各々から横方向に延出される。支持部材４１ａ、４１ｂが結合された状態において、２つの張出部５が平面視で対称に支持部４１の外周から張り出している。張出部５の底面５１は、エアバッグ３に接触してエアバッグ３から押し上げ力を受ける面であり、平らに形成される。張出部５は、曲げ剛性を高めるための補強リブ５２と、運搬時に把持される取っ手５３とを有する。ワイヤ６３と取っ手５３は、チェーン等（図示せず）で互に結ばれ、楔状部材６の散逸を防止している。支持部４１及び張出部５は、一人で運搬できるように重量を２０ｋｇ以下にすることが好ましく、例えば、超々ジュラルミンと呼ばれるアルミニウム軽合金（Ａ７０７５）を成形したものである。   The overhang portion 5 extends in the lateral direction from each of the support members 41a and 41b. In a state where the support members 41 a and 41 b are coupled, the two overhang portions 5 project from the outer periphery of the support portion 41 symmetrically in plan view. A bottom surface 51 of the overhang portion 5 is a surface that contacts the airbag 3 and receives a push-up force from the airbag 3, and is formed flat. The overhang portion 5 includes a reinforcing rib 52 for increasing bending rigidity and a handle 53 that is gripped during transportation. The wire 63 and the handle 53 are connected to each other by a chain or the like (not shown) to prevent the wedge-shaped member 6 from being dissipated. The support part 41 and the overhang part 5 are preferably 20 kg or less in weight so that they can be transported by one person. For example, the support part 41 and the overhang part 5 are formed of an aluminum light alloy (A7075) called ultra-super duralumin.

エアバッグ３は、スチールワイヤ等の補強材で補強されたゴム製であり、収縮した状態で板状の外形を有し、圧縮空気が供給されると厚さ方向すなわち高さ方向に膨張する。圧縮空気は、コンプレッサから供給される。エアバッグ３にボンベから加圧気体を供給して膨張させてもよい。圧縮空気を供給する配管は図示を省略している。エアバッグ３は、例えば、平面視で１辺約３７ｃｍの略矩形であり、収縮したとき厚さ２．５ｃｍ、膨張したとき最大厚さ約２０ｃｍである。コンプレッサから供給される圧縮空気の圧力は、例えば最大０．７ＭＰａであり、増圧弁は不要である。このエアバッグ３は、膨張によって高さ方向に最大約１０トン（約１００ｋＮ）の力を発生する。柱引抜装置１は、２つのエアバッグ３を有し、柱状物Ｐを引き抜く引抜力は、最大約１００ｋＮ×２＝２００ｋＮとなる。エアバッグ３の大きさ等は、これに限定されるものではない。   The airbag 3 is made of rubber reinforced with a reinforcing material such as a steel wire, has a plate-like outer shape in a contracted state, and expands in a thickness direction, that is, a height direction when compressed air is supplied. Compressed air is supplied from the compressor. The airbag 3 may be inflated by supplying pressurized gas from a cylinder. Illustration of piping for supplying compressed air is omitted. The airbag 3 is, for example, a substantially rectangular shape with a side of about 37 cm in a plan view, and has a thickness of 2.5 cm when contracted and a maximum thickness of about 20 cm when expanded. The pressure of the compressed air supplied from the compressor is, for example, a maximum of 0.7 MPa, and a pressure increasing valve is unnecessary. The airbag 3 generates a force of up to about 10 tons (about 100 kN) in the height direction by expansion. The column pulling apparatus 1 has two airbags 3 and the pulling force for pulling out the columnar object P is a maximum of about 100 kN × 2 = 200 kN. The size and the like of the airbag 3 are not limited to this.

上記のように構成された柱引抜装置１を用いた柱状物Ｐの引き抜きについて説明する。先ず、２つのエアバッグ３が、収縮した状態で、引き抜き対象の柱状物Ｐを横から挟むように、地面又は路面等の上に配置される。エアバッグ３には、圧縮空気を供給及び排出するための配管が接続される。次に、支持部４１が柱状物Ｐを囲むように配置され、張出部５がエアバッグ３上に配置される。支持部４１の支持部材４１ａ、４１ｂは、アイボルト４３によって締結される。楔状部材６が柱状物Ｐと支持部４１の内面４２との間に嵌め込まれる。楔状部材６の押圧面６２は、柱状物Ｐに外径側から密着する。楔状部材６のテーパ面６１は、支持部４１の内面４２に面接触する。この時、図４に示されるように、エアバッグ３が収縮した状態であるので、保持部４は、柱状物Ｐの地面Ｇに近い地上部分を保持することになる。   The extraction of the columnar object P using the column extraction apparatus 1 configured as described above will be described. First, in a contracted state, the two airbags 3 are arranged on the ground or road surface so as to sandwich the columnar object P to be pulled out from the side. A pipe for supplying and discharging compressed air is connected to the airbag 3. Next, the support portion 41 is disposed so as to surround the columnar object P, and the overhang portion 5 is disposed on the airbag 3. Support members 41 a and 41 b of the support portion 41 are fastened by eyebolts 43. The wedge-shaped member 6 is fitted between the columnar object P and the inner surface 42 of the support portion 41. The pressing surface 62 of the wedge-shaped member 6 is in close contact with the columnar object P from the outer diameter side. The tapered surface 61 of the wedge-shaped member 6 is in surface contact with the inner surface 42 of the support portion 41. At this time, as shown in FIG. 4, since the airbag 3 is in a contracted state, the holding unit 4 holds the ground portion of the columnar object P close to the ground G.

次に、エアバッグ３に圧縮空気が供給される。図５に示されるように、エアバッグ３は、高さ方向に膨張し、張出部５を押し上げる。保持部４は、張出部５とともに押し上げられる。保持部４が押し上げられる時、楔状部材６のテーパ面６１が支持部４１の内面４２から柱状物Ｐ方向の力を受け、楔状部材６が柱状物Ｐを押圧面６２で押圧して締め付ける（図３参照）。このため、柱状物Ｐは、柱引抜治具２の保持部４によって保持された状態で押し上げられ、土中等から引き抜かれる。エアバッグ３が最大厚さまで膨張されても柱状物Ｐの引き抜きが不十分な場合、保持部４による柱状物Ｐの保持が解除され、エアバッグ３が収縮され、柱状物Ｐが再び保持部４によって保持され、エアバッグ３が膨張される。   Next, compressed air is supplied to the airbag 3. As shown in FIG. 5, the airbag 3 is inflated in the height direction and pushes the overhang portion 5. The holding part 4 is pushed up together with the overhang part 5. When the holding part 4 is pushed up, the tapered surface 61 of the wedge-shaped member 6 receives a force in the direction of the columnar object P from the inner surface 42 of the support part 41, and the wedge-shaped member 6 presses the columnar object P with the pressing surface 62 and tightens it (see FIG. 3). For this reason, the columnar object P is pushed up while being held by the holding portion 4 of the column drawing jig 2 and pulled out from the soil or the like. If the columnar object P is not sufficiently pulled out even when the airbag 3 is inflated to the maximum thickness, the holding of the columnar object P by the holding unit 4 is released, the airbag 3 is contracted, and the columnar object P is again held by the holding unit 4. The airbag 3 is inflated.

柱状物Ｐの保持を解除する時には、楔状部材６が支持部４１から取り外される。   When releasing the holding of the columnar object P, the wedge-shaped member 6 is removed from the support portion 41.

このように、本実施形態に係る柱引抜装置１によれば、エアバッグ３が膨張されることにより、柱状物Ｐを保持した柱引抜治具２を押し上げるので、油圧を用いずに柱状物Ｐを引き抜くことができる。油圧を用いないので、柱引抜装置１を運搬する車両の油圧回路を改造する必要がなく、コストが削減される。エアバッグ３は、油圧シリンダと比べて接地圧が低いので、地面にめり込むことが防止される。エアバッグ３に圧縮空気を供給するコンプレッサは、新しい柱状物を設置する際にも用いられる場合には、コストを増加することにはならない。   As described above, according to the column pulling apparatus 1 according to the present embodiment, the column pulling jig 2 holding the columnar object P is pushed up when the airbag 3 is inflated. Can be pulled out. Since no hydraulic pressure is used, it is not necessary to remodel the hydraulic circuit of the vehicle that transports the column pulling device 1, and the cost is reduced. Since the airbag 3 has a lower ground pressure than that of the hydraulic cylinder, the airbag 3 is prevented from sinking into the ground. If the compressor for supplying compressed air to the airbag 3 is also used when installing a new columnar object, the cost will not increase.

また、保持部４が押し上げられることによって、楔状部材６のテーパ面６１が支持部４１の内面４２から柱状物Ｐ方向の力を受け、楔状部材６が柱状物Ｐを締め付けるので、柱状物Ｐが保持部４によって強力に保持される。   Further, when the holding part 4 is pushed up, the tapered surface 61 of the wedge-shaped member 6 receives a force in the direction of the columnar object P from the inner surface 42 of the support part 41, and the wedge-shaped member 6 tightens the columnar object P. It is strongly held by the holding unit 4.

支持部４１は、支持部材４１ａ、４１ｂを結合することによって枠状とされるので、柱状物Ｐの上部に柱状物Ｐよりも水平断面が大きな部材があっても、柱状物Ｐを囲むことができる。   Since the support part 41 is formed into a frame shape by connecting the support members 41a and 41b, the support part 41 can surround the columnar object P even if there is a member having a larger horizontal cross section than the columnar object P at the top of the columnar object P. it can.

エアバッグ３は、収縮した状態において板状の外形を有するので、収縮したエアバッグ３の上に配置された張出部５の位置が低く、保持部４は、地面Ｇに近い柱状物Ｐの地上部分を保持する（図４参照）。柱状物Ｐは、横方向から衝撃等を受けた場合、地上部分が中程から曲がることがある（図示せず）。保持部４は、柱状物Ｐの地面Ｇに近い地上部分を保持するので、柱状物Ｐの曲がった部分よりも下を保持することができる。このため、柱引抜装置１は、柱状物Ｐの地上部分が曲がっていても、その柱状物Ｐを引き抜くことができる。従来の油圧シリンダを用いた柱引抜装置では、柱状物の周囲の地面等をシリンダ長に相当する深さまで掘り下げる必要があったが、本実施形態の柱引抜装置１を用いると、柱状物Ｐの周囲を掘り下げる必要がなくなる。   Since the airbag 3 has a plate-like outer shape in the contracted state, the position of the overhanging portion 5 disposed on the contracted airbag 3 is low, and the holding portion 4 is formed of the columnar object P close to the ground G. Hold the ground part (see Figure 4). When the columnar object P receives an impact or the like from the lateral direction, the ground portion may be bent from the middle (not shown). Since the holding unit 4 holds the ground portion of the columnar object P close to the ground G, the holding unit 4 can hold the portion below the bent portion of the columnar object P. For this reason, the column pulling apparatus 1 can pull out the columnar object P even when the ground portion of the columnar object P is bent. In a conventional column pulling apparatus using a hydraulic cylinder, it is necessary to dig up the ground around the columnar object to a depth corresponding to the cylinder length. However, when the column pulling apparatus 1 of this embodiment is used, There is no need to dig around.

（第２の実施形態）
本発明の第２の実施形態に係る柱引抜装置１を図６乃至図１０を参照して説明する。図６乃至図８に示されるように、本実施形態の柱引抜装置１は、中空の柱状物Ｐを内径側からチャッキングして引き抜くものであり、第１の実施形態における楔状部材６を設けることに代えて、内径チャック部７及び引張軸８とを設けている。内径チャック部７及び引張軸８は、楔状部材６に取替可能とされている。 (Second Embodiment)
A column drawing apparatus 1 according to a second embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 6 to 8, the column pulling apparatus 1 according to the present embodiment is configured to chuck and pull out the hollow columnar object P from the inner diameter side, and is provided with the wedge-shaped member 6 according to the first embodiment. Instead, an inner diameter chuck portion 7 and a tension shaft 8 are provided. The inner diameter chuck portion 7 and the tension shaft 8 can be replaced with a wedge-shaped member 6.

保持部４は、中空の柱状物Ｐを内径側から保持する内径チャック部７と、内径チャック部７を引っ張るための引張軸８と、引張軸８を支持する支持部４１とを有する。内径チャック部７は、上端に向けて断面が漸次縮小するテーパ孔７１を有する。引張軸８は、テーパ孔７１に嵌合する嵌合部８１を有する。   The holding part 4 includes an inner diameter chuck part 7 that holds the hollow columnar object P from the inner diameter side, a tension shaft 8 for pulling the inner diameter chuck part 7, and a support part 41 that supports the tension shaft 8. The inner diameter chuck portion 7 has a tapered hole 71 whose cross section gradually decreases toward the upper end. The tension shaft 8 has a fitting portion 81 that fits into the tapered hole 71.

内径チャック部７は、例えば、ステンレス（ＳＵＳ３０３）を成形したものであり、２つの略半円柱形状のチャック部材７２から成り、２つのチャック部材７２を組み合わせて全体が略円柱形状となっている。内径チャック部７の外周面は、柱状物Ｐの内面を押圧する押圧面７３となっている。押圧面７３には、滑り止めのための凹凸が形成される。チャック部材７２が互いに対向する面に溝部が形成されており、２つのチャック部材７２が組み合わされたとき、その溝部によってテーパ孔７１が形成される。各々のチャック部材７２の上面には、取っ手状のワイヤ７４が取り付けられる。ワイヤ７４は、チャック部材７２を柱状物Ｐ内から取り出す時に把持される。ワイヤ７４と張出部５の取っ手５３は、チェーン等（図示せず）で互いに結ばれ、チャック部材７２の散逸を防止している。   The inner diameter chuck portion 7 is formed, for example, of stainless steel (SUS303), and includes two substantially semi-cylindrical chuck members 72, and the two chuck members 72 are combined to form a substantially cylindrical shape as a whole. The outer peripheral surface of the inner diameter chuck portion 7 is a pressing surface 73 that presses the inner surface of the columnar object P. The pressing surface 73 is formed with unevenness for preventing slipping. A groove is formed on the surfaces of the chuck member 72 facing each other, and when the two chuck members 72 are combined, a tapered hole 71 is formed by the groove. A handle-like wire 74 is attached to the upper surface of each chuck member 72. The wire 74 is gripped when the chuck member 72 is taken out from the columnar object P. The wire 74 and the handle 53 of the overhang portion 5 are connected to each other by a chain or the like (not shown) to prevent the chuck member 72 from being dissipated.

引張軸８は、嵌合部８１の他に、梁部８２と、嵌合部８１と梁部８２との間を上下に連結する軸部８３とを有する。嵌合部８１は、下端に向けてチャック部材７２の間隔を拡げる側に断面が漸次拡大しおり、内径チャック部７のテーパ孔７１と面接触する。梁部８２は、下面中央に引張軸８が結合され、両端近傍が支持部４１上に載置されて支持される。梁部８２上面には、取っ手８４が取り付けられている。   In addition to the fitting portion 81, the tension shaft 8 includes a beam portion 82 and a shaft portion 83 that vertically connects the fitting portion 81 and the beam portion 82. The section of the fitting portion 81 gradually increases toward the lower end toward the side where the interval between the chuck members 72 is increased, and comes into surface contact with the tapered hole 71 of the inner diameter chuck portion 7. The beam portion 82 is supported by the tensile shaft 8 being coupled to the center of the bottom surface and the vicinity of both ends being placed on the support portion 41. A handle 84 is attached to the upper surface of the beam portion 82.

上記のように構成された柱引抜装置１を用いた中空の柱状物Ｐの引き抜きについて説明する。本実施形態の柱引抜装置１は、柱状物Ｐの地上部分の腐食や損傷等が著しく、地上部分の保持が困難な場合等に好適に用いられる。中空の柱状物Ｐは、地上部分が切除され、地上部分の切除によって地面又は路面等の近傍に開口が形成される。図９に示されるように、２つのエアバッグ３が、収縮した状態で、その開口に隣り合うように、地面Ｇ等の上に配置される。エアバッグ３には、圧縮空気を供給及び排出するための配管が接続される。次に、支持部４１が、その中心が柱状物Ｐのほぼ中心軸上に位置するように配置され、張出部５がエアバッグ３上に配置される。支持部４１の支持部材４１ａ、４１ｂは、アイボルト４３によって締結される。引張軸８の嵌合部８１が柱状物Ｐの中空部内に挿入される。引張軸８は、梁部８２を介して支持部４１に支持される。２つのチャック部材７２が嵌合部８１ととテーパ孔７１の内面との間に嵌め込まれる。２つのチャック部材７２によって内径チャック部７が構成される。嵌合部８１は、テーパ孔７１に嵌合する。   The extraction of the hollow columnar object P using the column extraction apparatus 1 configured as described above will be described. The column drawing apparatus 1 of the present embodiment is suitably used when the ground portion of the columnar object P is significantly corroded or damaged, and it is difficult to hold the ground portion. The hollow columnar object P is cut off from the ground portion, and an opening is formed in the vicinity of the ground or road surface by cutting the ground portion. As shown in FIG. 9, the two airbags 3 are arranged on the ground G or the like so as to be adjacent to the openings in a contracted state. A pipe for supplying and discharging compressed air is connected to the airbag 3. Next, the support portion 41 is disposed so that the center thereof is positioned on the substantially central axis of the columnar object P, and the overhang portion 5 is disposed on the airbag 3. Support members 41 a and 41 b of the support portion 41 are fastened by eyebolts 43. The fitting portion 81 of the tension shaft 8 is inserted into the hollow portion of the columnar object P. The tension shaft 8 is supported by the support portion 41 via the beam portion 82. Two chuck members 72 are fitted between the fitting portion 81 and the inner surface of the tapered hole 71. The inner diameter chuck portion 7 is constituted by the two chuck members 72. The fitting portion 81 is fitted into the tapered hole 71.

次に、エアバッグ３に圧縮空気が供給される。図１０に示されるように、エアバッグ３は、高さ方向に膨張し、張出部５を押し上げる。保持部４は、張出部５とともに押し上げられる。保持部４が押し上げられる時、内径チャック部７は、引張軸８の嵌合部８１からチャック部材７２の間隔を拡げる方向の力を受け、柱状物Ｐの内面を押圧面７３で押圧する。このため、柱状物Ｐは、柱引抜治具２の保持部４によって保持された状態で押し上げられ、土中等から引き抜かれる。   Next, compressed air is supplied to the airbag 3. As shown in FIG. 10, the airbag 3 is inflated in the height direction and pushes up the overhang portion 5. The holding part 4 is pushed up together with the overhang part 5. When the holding portion 4 is pushed up, the inner diameter chuck portion 7 receives a force in the direction of expanding the interval between the chuck members 72 from the fitting portion 81 of the tension shaft 8 and presses the inner surface of the columnar object P with the pressing surface 73. For this reason, the columnar object P is pushed up while being held by the holding portion 4 of the column drawing jig 2 and pulled out from the soil or the like.

柱状物Ｐの保持を解除する時には、ワイヤ７４が把持され、内径チャック部７が柱状物Ｐ内から取り出される。   When releasing the holding of the columnar object P, the wire 74 is gripped, and the inner diameter chuck portion 7 is taken out from the columnar object P.

このように、本実施形態に係る柱引抜装置１によれば、エアバッグ３が膨張されることにより、柱状物Ｐを保持した柱引抜治具２を押し上げるので、油圧を用いずに柱状物Ｐを引き抜くことができる。保持部４が押し上げられることによって、内径チャック部７は、テーパ孔７１に嵌合した嵌合部８１から力を受け、柱状物Ｐの内面を押圧するので、柱状物Ｐが保持部４によって強力に保持される。   As described above, according to the column pulling apparatus 1 according to the present embodiment, the column pulling jig 2 holding the columnar object P is pushed up when the airbag 3 is inflated. Can be pulled out. When the holding part 4 is pushed up, the inner diameter chuck part 7 receives a force from the fitting part 81 fitted in the tapered hole 71 and presses the inner surface of the columnar object P, so that the columnar object P is stronger by the holding part 4. Retained.

また、内径チャック部７及び引張軸８は、楔状部材６に取替可能とされているので、柱引抜装置１は、柱状物Ｐに応じて、柱状物Ｐを外径側又は内径側から保持して引き抜くことができる。   Further, since the inner diameter chuck portion 7 and the tension shaft 8 can be replaced with the wedge-shaped member 6, the column drawing apparatus 1 holds the columnar object P from the outer diameter side or the inner diameter side according to the columnar object P. And can be pulled out.

なお、本発明は、上記の実施形態の構成に限られず、発明の要旨を変更しない範囲で種々の変形が可能である。例えば、柱状物Ｐは、防護柵の支柱に限られず、例えば、道路標識柱であってもよい。エアバッグ３は、平面視で円形又は楕円であってもよい。また、内径チャック部７は、４つの略１／４円柱形状のチャック部材を組み合わせて全体が略円柱形状となるように構成してもよい。   In addition, this invention is not restricted to the structure of said embodiment, A various deformation | transformation is possible in the range which does not change the summary of invention. For example, the columnar object P is not limited to a support fence post, and may be a road sign post, for example. The airbag 3 may be circular or elliptical in plan view. Further, the inner diameter chuck portion 7 may be configured so that the whole becomes a substantially cylindrical shape by combining four substantially 1/4 cylindrical chuck members.

１ 柱引抜装置
２ 柱引抜治具
３ エアバッグ
４ 保持部
４１ 支持部
４１ａ、４１ｂ 支持部材
４２ 内面
５ 張出部
６ 楔状部材
６１ テーパ面
７ 内径チャック部
７１ テーパ孔
８ 引張軸
Ｐ 柱状物
DESCRIPTION OF SYMBOLS 1 Column drawing apparatus 2 Column drawing jig 3 Airbag 4 Holding | maintenance part 41 Support part 41a, 41b Support member 42 Inner surface 5 Overhang | projection part 6 Wedge-shaped member 61 Tapered surface 7 Inner diameter chuck | zipper part 71 Tapered hole 8 Pull axis P Columnar thing

Claims (6)

柱状物を引き抜くための柱引抜装置であって、
柱状物を保持する保持部及び前記保持部から張り出した張出部を有する柱引抜治具と、
高さ方向に膨張されるエアバッグとを備え、
前記張出部は、前記エアバッグ上に配置されることを特徴とする柱引抜装置。 A column pulling device for pulling out a columnar object,
A column pulling jig having a holding portion for holding a columnar object and a protruding portion protruding from the holding portion;
An airbag inflated in the height direction,
The column pulling-out device, wherein the overhanging portion is disposed on the airbag. 前記保持部は、柱状物を挟持する複数の楔状部材と、前記楔状部材を支持する支持部とを有し、
前記各々の楔状部材は、下端に向けて柱状物側に漸近するテーパ面を有し、
前記支持部は、前記テーパ面と接する内面が形成された枠状であり、
前記張出部は、前記支持部から張り出していることを特徴とする請求項１に記載の柱引抜装置。 The holding portion includes a plurality of wedge members that sandwich the columnar object, and a support portion that supports the wedge members,
Each of the wedge-shaped members has a tapered surface that gradually approaches the columnar object toward the lower end;
The support portion has a frame shape in which an inner surface in contact with the tapered surface is formed,
The column pulling-out apparatus according to claim 1, wherein the overhanging portion overhangs from the support portion. 前記保持部は、中空の柱状物を内径側から保持する内径チャック部と、前記内径チャック部を引っ張るための引張軸と、前記引張軸を支持する支持部とを有し、
前記内径チャック部は、上端に向けて断面が漸次縮小するテーパ孔を有し、
前記引張軸は、前記テーパ孔に嵌合する嵌合部を有し、
前記張出部は、前記支持部から張り出していることを特徴とする請求項１に記載の柱引抜装置。 The holding portion has an inner diameter chuck portion that holds a hollow columnar object from the inner diameter side, a tension shaft for pulling the inner diameter chuck portion, and a support portion that supports the tension shaft,
The inner diameter chuck portion has a tapered hole whose cross section gradually decreases toward the upper end,
The tension shaft has a fitting portion that fits into the tapered hole,
The column pulling-out apparatus according to claim 1, wherein the overhanging portion overhangs from the support portion. 前記内径チャック部及び引張軸は、柱状物を挟持する複数の楔状部材に取替可能とされ、
前記各々の楔状部材は、下端に向けて柱状物側に漸近するテーパ面を有し、
前記支持部は、前記テーパ面に接する内面が形成された枠状であることを特徴とする請求項３に記載の柱引抜装置。 The inner diameter chuck portion and the tension shaft can be replaced with a plurality of wedge-shaped members that sandwich a columnar object,
Each of the wedge-shaped members has a tapered surface that gradually approaches the columnar object toward the lower end;
The column drawing apparatus according to claim 3, wherein the support portion has a frame shape in which an inner surface in contact with the tapered surface is formed. 前記支持部は、複数の支持部材を有し、該支持部材が結合されることによって枠状とされることを特徴とする請求項２又は請求項４に記載の柱引抜装置。   The column pulling-out device according to claim 2 or 4, wherein the support part has a plurality of support members, and is formed into a frame shape by combining the support members. 前記エアバッグは、収縮した状態において板状の外形を有することを特徴とする請求項１乃至請求項５に記載の柱引抜装置。
The column pulling-out device according to claim 1, wherein the airbag has a plate-like outer shape in a contracted state.
JP2010230111A 2010-10-12 2010-10-12 Column puller Expired - Fee Related JP4755721B1 (en)

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JP2010230111A JP4755721B1 (en) 2010-10-12 2010-10-12 Column puller
PCT/JP2011/052565 WO2012049862A1 (en) 2010-10-12 2011-02-08 Pole pulling-out device

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001348190A (en) * 2000-06-09 2001-12-18 Sekijima Kogyo Kk Air jack device
JP2004176382A (en) * 2002-11-26 2004-06-24 Kkm Kk Repair device for roadside structure and its repair method
JP2005105773A (en) * 2003-10-02 2005-04-21 Chugoku Aatekku Kk Column extractor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0569077U (en) * 1992-02-20 1993-09-17 東洋ゴム工業株式会社 Air lift for vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001348190A (en) * 2000-06-09 2001-12-18 Sekijima Kogyo Kk Air jack device
JP2004176382A (en) * 2002-11-26 2004-06-24 Kkm Kk Repair device for roadside structure and its repair method
JP2005105773A (en) * 2003-10-02 2005-04-21 Chugoku Aatekku Kk Column extractor

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