JP2012067508A

JP2012067508A - Tubing device

Info

Publication number: JP2012067508A
Application number: JP2010213159A
Authority: JP
Inventors: Tomoki Tanimoto; 智紀谷本
Original assignee: Nippon Sharyo Ltd
Current assignee: Nippon Sharyo Ltd
Priority date: 2010-09-24
Filing date: 2010-09-24
Publication date: 2012-04-05
Anticipated expiration: 2030-09-24
Also published as: JP5582938B2

Abstract

PROBLEM TO BE SOLVED: To provide a tubing device having a ladder which makes it possible to safely go up to and down from a deck attached to a chuck frame regardless of a lifting position of the chuck frame.SOLUTION: A ladder 16 provided is attached to a chuck frame 14 of a tubing device 11 including a base frame 12 installed on the ground and the chuck frame 14 liftably attached through a lifting cylinder to the base frame 12. The ladder 16 includes a pair of leg parts 16a and 16a having the almost same length dimension as a height dimension from the ground to the chuck frame 14 when the chuck frame 14 is lifted the most, and a plurality of foot mounting members 16b arranged between the leg parts. On one side part of the chuck frame 14, a pair of leg part holding members 17 and 17 provided so as to hold the leg parts 16a and 16a and be slid along the leg parts 16a and 16a are projected.

Description

本発明は、チュービング装置に関し、詳しくは、ベースフレームに対して昇降可能に設けられたチャックフレームに梯子を取り付ける構造に関する。 The present invention relates to a tubing device, and more particularly to a structure in which a ladder is attached to a chuck frame that can be moved up and down with respect to a base frame.

従来、チュービング装置では、地上に据え付けられるベースフレームに昇降シリンダを介して、チャックフレームとドライブフレームとが昇降可能に取り付けられている。このようなチュービング装置では、作業者がチャックフレームに取り付けられているデッキ上で作業する際には、梯子を用いて前記デッキに昇降していた。この梯子として、チャックフレームの昇降位置に対応して、伸縮可能に形成された梯子が用いられることがあった（例えば、特許文献１及び２参照。）。 Conventionally, in a tubing device, a chuck frame and a drive frame are attached to a base frame installed on the ground via an elevating cylinder so as to be able to move up and down. In such a tubing device, when an operator works on a deck attached to a chuck frame, the operator uses a ladder to ascend and descend to the deck. As this ladder, there is a case in which a ladder formed so as to be extendable and retractable corresponding to the lift position of the chuck frame is used (for example, see Patent Documents 1 and 2).

特開２００６−２８３４６８号公報JP 2006-283468 A 特開２００７−２２４５７３号公報JP 2007-224573 A

しかし、上述の特許文献１及び特許文献２のものでは、チャックフレームの高さに応じて、梯子の長さを調整しなければならず、また、最大近くまで伸ばすと不安定になることがあった。 However, in the above-mentioned Patent Document 1 and Patent Document 2, the length of the ladder must be adjusted according to the height of the chuck frame, and it may become unstable when extended to the maximum. It was.

そこで本発明は、チャックフレームの昇降位置に拘わらず、チャックフレームに取り付けられたデッキ上に安全に昇降できる梯子を備えたチュービング装置を提供することを目的としている。 Accordingly, an object of the present invention is to provide a tubing device including a ladder that can be safely lifted and lowered on a deck attached to the chuck frame regardless of the lift position of the chuck frame.

上記目的を達成するため、本発明のチュービング装置は、地上に据え付けられるベースフレームと、該ベースフレームに昇降シリンダを介して昇降可能に取り付けられたチャックフレームとを備えたチュービング装置において、前記チャックフレームに着脱可能に取り付けられる梯子を備え、前記梯子は、前記チャックフレームが最も上昇した際の地上から前記チャックフレームまでの高さ寸法以上の長さ寸法を有する一対の脚部と、該脚部間に配置される複数の足載せ部材とを備え、前記チャックフレームの一側部には、前記脚部を、該脚部に沿ってスライド可能な状態で包持する一対の脚部保持部材を突設したことを特徴としている。また、前記一対の脚部は、上端部を逆Ｕ字状に折り返して前記チャックフレームの昇降方向に対して平行な方向に配置される折返し部が一体に形成され、該折返し部を前記脚部保持部材に包持させると共に、前記折返し部は、前記チャックフレームが最も下降した際に、前記脚部保持部材が前記折返し部の下端側を包持可能な長さ寸法を備えていると好適である。 To achieve the above object, a tubing device according to the present invention is a tubing device comprising a base frame installed on the ground and a chuck frame attached to the base frame via a lifting cylinder so as to be lifted and lowered. A ladder detachably attached to the ladder, the ladder having a length dimension greater than a height dimension from the ground to the chuck frame when the chuck frame is most lifted, and a space between the legs. And a pair of leg holding members that hold the legs in a slidable manner along the legs. It is characterized by having installed. In addition, the pair of legs are formed integrally with a folded portion that is folded in an inverted U shape at the upper end and is disposed in a direction parallel to the lifting and lowering direction of the chuck frame. It is preferable that the folded portion has a length dimension that allows the leg holding member to grip the lower end side of the folded portion when the chuck frame is lowered most. is there.

本発明のチュービング装置によれば、チャックフレームの一側部に、梯子の脚部を包持すると共に、脚部に沿ってスライド可能に設けられる一対の脚部保持部材を設けたので、チャックフレームの昇降に応じて、脚部保持部材が梯子の脚部を上下方向にスライドし、チャックフレームの昇降位置に関係なく梯子を確実に保持できる。さらに、脚部は、チャックフレームが最も上昇した際の地上からチャックフレームまでの高さ寸法と略同一の長さ寸法を備えていることから、チャックフレームの昇降に拘わらず、梯子を良好な状態で保持することができ、梯子の高さ調整を行う必要もない。 According to the tubing device of the present invention, the chuck frame is provided with a pair of leg holding members which are provided on one side of the chuck frame so as to wrap the legs of the ladder and to be slidable along the legs. The leg holding member slides the leg part of the ladder in the vertical direction according to the raising / lowering of the ladder, so that the ladder can be reliably held regardless of the raising / lowering position of the chuck frame. In addition, the legs have a length that is approximately the same as the height from the ground to the chuck frame when the chuck frame is raised most, so that the ladder is in good condition regardless of whether the chuck frame is raised or lowered. It is not necessary to adjust the height of the ladder.

また、一対の脚部の上端部に、逆Ｕ字状の折返し部を形成し、該折返し部を前記脚部保持部材に包持させることにより、脚部保持部材に折返し部を簡単に連結させることができる。さらに、折返し部は、チャックフレームが最も下降した際に、脚部保持部材が包持可能な長さ寸法を備えていることから、チャックフレームが最も下降した際でも、梯子を良好な状態でチャックフレームに保持しておくことができる。 Further, an inverted U-shaped folded portion is formed at the upper end of the pair of leg portions, and the folded portion is easily held by the leg holding member, thereby easily connecting the folded portion to the leg holding member. be able to. Furthermore, since the folded portion has a length dimension that can be held by the leg holding member when the chuck frame is lowered most, the ladder can be held in a good condition even when the chuck frame is lowered most. Can be held on the frame.

本発明の第１形態例を示す梯子を取り付けた状態のチュービング装置の正面図である。It is a front view of the tubing device in the state where the ladder which shows the 1st example of the present invention was attached. 同じくチャックフレーム上昇時における梯子を取り付けた状態のチュービング装置の正面図である。It is a front view of the tubing apparatus of the state where the ladder was similarly attached at the time of a chuck frame raise. 同じく梯子の斜視図である。It is a perspective view of a ladder similarly. 本発明の第２形態例を示す梯子を取り付けた状態のチュービング装置の正面図である。It is a front view of the tubing apparatus of the state which attached the ladder which shows the 2nd form example of this invention. 同じくチャックフレーム上昇時における梯子を取り付けた状態のチュービング装置の正面図である。It is a front view of the tubing apparatus of the state where the ladder was similarly attached at the time of a chuck frame raise. 同じく梯子の斜視図である。It is a perspective view of a ladder similarly.

図１乃至図３は本発明の第１形態例を示すもので、チュービング装置１１は、地上に据え付けられるベースフレーム１２に立設した４本の昇降シリンダ１３に、チャックフレーム１４とドライブフレーム１５とが昇降可能に取り付けられている。各フレーム１２，１４，１５の中央部には、ケーシング挿通孔がそれぞれ設けられ、該ケーシング挿通孔に挿通したケーシングチューブをチャック手段にて把持し、回転駆動手段によりケーシングチューブを揺動させたり、回転させたりしながらケーシングチューブを地中に押し込んだり、地中から引き抜いたりする。最も上方に配置されるチャックフレーム１４には、作業者がチャックフレーム１４に取り付けられたデッキ上に昇って作業を行うために使用する梯子１６が取り付けられている。 FIGS. 1 to 3 show a first embodiment of the present invention. A tubing device 11 includes a chuck frame 14, a drive frame 15, and four lifting cylinders 13 erected on a base frame 12 installed on the ground. Is attached to be movable up and down. A casing insertion hole is provided at the center of each of the frames 12, 14 and 15, respectively. A casing tube inserted through the casing insertion hole is gripped by chuck means, and the casing tube is swung by rotation driving means. While rotating, the casing tube is pushed into the ground or pulled out from the ground. The chuck frame 14 disposed at the uppermost position is provided with a ladder 16 that is used for an operator to climb and work on a deck attached to the chuck frame 14.

梯子１６は、パイプ材で形成された一対の脚部１６ａ，１６ａと、該脚部１６ａ，１６ａを繋ぐ複数の足載せ部材１６ｂとを備えたもので、脚部１６ａは、上端部に設けられる逆Ｕ字状の折返し部１６ｃ，１６ｃと、該折返し部１６ｃ，１６ｃの先端を繋ぐ連結部１６ｄとを備えると共に、下端部に、円形の接地板１６ｅ，１６ｅが設けられている。 The ladder 16 includes a pair of leg portions 16a and 16a formed of a pipe material and a plurality of footrest members 16b that connect the leg portions 16a and 16a, and the leg portion 16a is provided at an upper end portion. In addition to the inverted U-shaped folded portions 16c and 16c and a connecting portion 16d that connects the tips of the folded portions 16c and 16c, circular ground plates 16e and 16e are provided at the lower end.

チャックフレーム１４の一側部には、板部材を折返し部１６ｃの外面に対応した形状に湾曲させて、折返し部１６ｃの外側を包持可能に形成した一対の脚部保持部材１７，１７が湾曲部内面を対向して設けられている。この脚部保持部材１７は、チャックフレーム１４の昇降に伴って、折返し部１６ｃを包持して保持した状態で上下方向にスライド可能に設けられている。また、各脚部１６ａの長さ寸法は、チャックフレーム１４を最も上昇させた際の地上からチャックフレーム１４までの高さ寸法と略同一に形成されると共に、折返し部１６ｃ，１６ｃは、チャックフレーム１４が最も下降した際に、脚部保持部材１７，１７が折返し部１６ｃ，１６ｃを包持可能な長さ寸法に形成されている。 On one side of the chuck frame 14, a pair of leg holding members 17, 17 are formed so that the plate member is bent into a shape corresponding to the outer surface of the turned-up portion 16 c and the outside of the turned-up portion 16 c can be held. The inner surfaces of the parts are provided to face each other. The leg holding member 17 is provided to be slidable in the vertical direction in a state where the folded portion 16c is held and held as the chuck frame 14 moves up and down. The length of each leg portion 16a is substantially the same as the height from the ground to the chuck frame 14 when the chuck frame 14 is raised most, and the folded portions 16c and 16c are formed in the chuck frame. The leg holding members 17 and 17 are formed in such a length dimension that they can hold the folded portions 16c and 16c when 14 is lowered most.

この梯子１６は、チュービング装置１１を建設現場に設置し、チャックフレーム１４が最も下降している状態で、脚部保持部材１７，１７の上部から、連結部１６ｄ及び折返し部１６ｃ，１６ｃを脚部保持部材１７，１７に挿入することにより、梯子１６が脚部保持部材１７を介してチャックフレーム１４に取り付けられる。このとき、図１に示されるように、折返し部１６ｃ，１６ｃは下端側が脚部保持部材１７，１７に包持され、頂部がチャックフレーム１４よりも上方に突出した状態となっている。また、チャックフレーム１４の上昇時には、脚部保持部材１７，１７が折返し部１６ｃ，１６ｃを上方にスライドし、図２に示されるように、折返し部１６ｃ，１６ｃの中間部乃至上部を保持する状態となる。 This ladder 16 has the tubing device 11 installed at the construction site, and the connecting portion 16d and the turn-back portions 16c, 16c from the upper portion of the leg holding members 17, 17 with the chuck frame 14 in the lowest position. By inserting into the holding members 17, 17, the ladder 16 is attached to the chuck frame 14 via the leg holding members 17. At this time, as shown in FIG. 1, the folded portions 16 c and 16 c are held by the leg holding members 17 and 17 at the lower end side, and the top portion protrudes upward from the chuck frame 14. Further, when the chuck frame 14 is raised, the leg holding members 17 and 17 slide upward on the folded portions 16c and 16c, and hold the intermediate portion or the upper portion of the folded portions 16c and 16c as shown in FIG. It becomes.

本形態例は、上述のように形成されることにより、チュービング装置１１を建設現場に設置する際に、チャックフレーム１４に設けた脚部保持部材１７に梯子１６を保持させるだけで、梯子１６の高さ調整を行うことなく、チャックフレーム１４の昇降に拘わらず梯子１６を使用可能な状態とすることができ、作業者は、チャックフレーム１４がどの高さにあっても、良好な状態でチャックフレーム１４に取り付けられたデッキ上に昇降することができる。また、各脚部１６ａが連続した１本の部材で形成されているので、十分な強度を得ることができ、伸縮するものに比べてがたつくことがほとんどなく、安全に昇降することができる。 Since the present embodiment is formed as described above, when the tubing device 11 is installed at the construction site, the ladder 16 is simply held by the leg holding member 17 provided on the chuck frame 14. Without adjusting the height, the ladder 16 can be used regardless of whether the chuck frame 14 is raised or lowered, and the operator can check the chuck frame 14 in a good state regardless of the height of the chuck frame 14. It can be raised and lowered on a deck attached to the frame 14. Moreover, since each leg part 16a is formed with one continuous member, sufficient strength can be obtained, and there is almost no backlash compared with the one that expands and contracts, and it is possible to move up and down safely.

さらに、折返し部１６ｃ，１６ｃは、チャックフレーム１４の昇降方向に対して平行な方向に配置されるが、足載せ部材１６ｂを設けた脚部１６ａは、チャックフレーム１４の昇降方向に対して平行である必要はなく、傾斜させた状態とすることもできる。また、脚部１６ａの上端部から逆Ｕ字状に折り返した折返し部１６ｃを脚部保持部材１７で包持するように形成しているので、脚部１６ａに手摺や落下防止部材を設けることもできる。 Further, the folded portions 16c and 16c are arranged in a direction parallel to the lifting / lowering direction of the chuck frame 14, but the leg portion 16a provided with the footrest member 16b is parallel to the lifting / lowering direction of the chuck frame 14. It does not have to be, and can be inclined. Further, since the folded portion 16c folded back in an inverted U shape from the upper end portion of the leg portion 16a is formed to be held by the leg portion holding member 17, a handrail or a fall prevention member may be provided on the leg portion 16a. it can.

図５及び図６は本発明の第２形態例を示すもので、第１形態例と同様の構成要素を示すものには、同一の符号を付して、その詳細な説明は省略する。本形態例の梯子１６は、前述の折返し部と連結部とを備えていない直線状の脚部１６ａ，１６ａと、足載せ部材１６ｂとで形成されるもので、脚部１６ａ，１６ａを脚部保持部材１７，１７に包持させるようにしている。脚部１６ａの長さは、チャックフレーム１４が最も上昇したときでも、脚部保持部材１７から脚部１６ａが外れない長さに形成されている。 FIGS. 5 and 6 show a second embodiment of the present invention. Components that are the same as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The ladder 16 of the present embodiment is formed of straight leg portions 16a and 16a that do not include the above-described folded portion and connecting portion, and a footrest member 16b, and the leg portions 16a and 16a are leg portions. The holding members 17 and 17 are held. The length of the leg portion 16a is formed such that the leg portion 16a cannot be detached from the leg portion holding member 17 even when the chuck frame 14 is raised most.

尚、本発明の梯子は、上述の形態例のようにパイプ材で形成されるものに限らず、丸棒や角材で形成することもできる。また、脚部保持部材は、脚部や折返し部をスライド可能に包持できればよく、Ｚ形鋼や溝形鋼をチャックフレームの外面に溶接して脚部を包持するように形成することもできる。 In addition, the ladder of this invention is not restricted to what is formed with a pipe material like the above-mentioned example, It can also be formed with a round bar or a square. The leg holding member only needs to be able to slidably hold the leg part and the folded part, and may be formed so as to hold the leg part by welding Z-shaped steel or groove-shaped steel to the outer surface of the chuck frame. it can.

１１…チュービング装置、１２…ベースフレーム、１３…昇降シリンダ、１４…チャックフレーム、１５…ドライブフレーム、１６…梯子、１６ａ…脚部、１６ｂ…足載せ部材、１６ｃ…折返し部、１６ｄ…連結部、１６ｅ…接地板、１７…脚部保持部材 DESCRIPTION OF SYMBOLS 11 ... Tubing apparatus, 12 ... Base frame, 13 ... Elevating cylinder, 14 ... Chuck frame, 15 ... Drive frame, 16 ... Ladder, 16a ... Leg part, 16b ... Footrest member, 16c ... Folding part, 16d ... Connection part, 16e ... grounding plate, 17 ... leg holding member

Claims

A tubing apparatus comprising: a base frame installed on the ground; and a chuck frame attached to the base frame via an elevating cylinder so as to be movable up and down. The tubing device includes a ladder attached to the chuck frame, and the ladder includes the chuck frame. A pair of leg portions having a length dimension equal to or greater than a height dimension from the ground to the chuck frame at the time of the most rising, and a plurality of footrest members disposed between the leg portions, A tubing device characterized in that a pair of leg holding members that project the leg in a slidable manner along the leg are provided on one side.

The pair of legs are integrally formed with a folded portion that is folded back in an inverted U shape at the upper end and is disposed in a direction parallel to the ascending / descending direction of the chuck frame. And the folded portion has a length dimension that allows the leg holding member to grip the lower end side of the folded portion when the chuck frame is lowered most. The tubing device according to claim 1.