JP2019203341A

JP2019203341A - Pile driver

Info

Publication number: JP2019203341A
Application number: JP2018100304A
Authority: JP
Inventors: 磯貝　隆明; Takaaki Isogai; 隆明磯貝; 信肇馬場; Nobutoshi Baba
Original assignee: Nippon Sharyo Ltd
Current assignee: Nippon Sharyo Ltd
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2019-11-28
Anticipated expiration: 2038-05-25
Also published as: JP7023581B2

Abstract

To provide a pile driver that can be folded compactly with a simple structure and includes a ladder that can protrude from a side surface of a leader when used.SOLUTION: A leader ascending/descending ladder 36 provided on a side surface of a leader 15 includes a ladder body 42 and a fixing member 43. The ladder body 42 has a pair of vertical rails 42a provided along the longitudinal direction of the leader in parallel with each other, and a plurality of lateral rails 42b connecting the pair of vertical rails 42a. The fixing member 43 can hold the ladder body 42 in a stored position or a work position. The ladder body 42 and the fixing member 43 are installed so as to be rotatable in the front-rear direction with rotation pins 44, 45 provided on the side surface of the leader 15 as axes. In the stored position, the ladder body 42 and fixing member 43 are connected in an unrotatable manner by fixing an overlap part between a rotation end of the ladder body 42 and a rotation base of the fixing member 43 using a fixing pin 46. In the work position, the ladder body 42 and the fixing member 43 are connected in an unrotatable manner by fixing an overlap part between the rotation end of the ladder body 42 and a rotation end of the fixing member 43 using the fixing pin 46.SELECTED DRAWING: Figure 5

Description

本発明は、杭打機に関し、詳しくは、リーダの側面に沿って昇降可能な梯子を備えた杭打機に関する。 The present invention relates to a pile driver, and more particularly, to a pile driver including a ladder that can be moved up and down along a side surface of a leader.

杭打機は、一般に、リーダの側面に梯子を備えており、リーダに設けられたガイドレールに沿って昇降するオーガへの掘削スクリューやロッドなどの接続確認や、補修作業を適時に行えるようになっている。このため、梯子の取付部は、容易に変形、破損しないように強固に溶接され、必要に応じて部材を追加して補強がなされている（例えば、特許文献１参照。）。一方、梯子を直接溶接したものはリーダの重量が嵩むことから、リーダに対して梯子を着脱可能とした取付構造も知られている（例えば、特許文献２参照。）。 The pile driver generally has a ladder on the side of the leader so that the connection of excavation screws and rods to the auger that moves up and down along the guide rail provided on the leader and repair work can be performed in a timely manner. It has become. For this reason, the attachment portion of the ladder is firmly welded so as not to be easily deformed or damaged, and is reinforced by adding a member as necessary (see, for example, Patent Document 1). On the other hand, since the weight of the leader increases when the ladder is directly welded, an attachment structure in which the ladder can be attached to and detached from the leader is also known (see, for example, Patent Document 2).

特開平７−３１０３２０号公報JP 7-310320 A 特開２００１−９８８６４号公報JP 2001-98864 A

ところで、小型の杭打機は、リーダを後方に倒伏させた状態で輸送する場合が多く、この場合、リーダ中間部に位置する梯子は、上部旋回体の左右ハウス間に収容される。また、サイズ的な制約から、エンジンや油圧ポンプなども小型で小出力のものが搭載されているが、近年では、許す限り大出力の作業装置を使用して掘削機能を高めることが望まれている。しかし、大型エンジンを搭載するためには、ハウスの奥行きを広げることとなり、その結果、リーダ側面に梯子を備えておくスペースが確保できないという課題があった。 By the way, a small pile driving machine is often transported in a state where the leader is laid down backward, and in this case, the ladder located in the middle part of the leader is accommodated between the left and right houses of the upper swing body. In addition, due to size constraints, engines and hydraulic pumps are also small and have a small output, but in recent years it has been desired to enhance the excavation function by using a work device with a high output as much as possible. Yes. However, in order to mount a large engine, the depth of the house is increased, and as a result, there is a problem that a space for providing a ladder on the side surface of the reader cannot be secured.

そこで本発明は、簡単な構造でコンパクトに折り畳むことができ、使用時にはリーダの側面より張り出すことができる梯子を備えた杭打機を提供することを目的としている。 SUMMARY OF THE INVENTION An object of the present invention is to provide a pile driving machine including a ladder that can be folded compactly with a simple structure and can be extended from the side surface of a leader when used.

上記目的を達成するため、本発明の杭打機は、クローラを備えた下部走行体と、該下部走行体の上部に旋回可能に設けられた上部旋回体とで構成されたベースマシンと、前記上部旋回体の前部に複数のリーダ部材を互いに着脱可能に連結して起伏可能に設けられたリーダと、該リーダを後方から支持する起伏シリンダと、前記リーダの側面に設けられたリーダ昇降梯子とを備えた杭打機において、前記リーダ昇降梯子は、前記リーダの側面に沿わせた格納位置と、前記起伏シリンダを伸長して前記リーダを起立させた状態で、前記リーダの側面よりも外側に張り出した作業位置とに移動可能に形成されていることを特徴としている。 In order to achieve the above object, a pile driving machine according to the present invention includes a base machine configured by a lower traveling body provided with a crawler, and an upper revolving body provided on the upper portion of the lower traveling body so as to be pivotable. A reader provided in a undulating manner by removably connecting a plurality of leader members to the front part of the upper swing body, a undulating cylinder for supporting the reader from the rear, and a reader lifting ladder provided on a side surface of the reader The leader elevating ladder includes a storage position along the side surface of the leader, and an outer side than the side surface of the leader in a state where the leader cylinder is raised by extending the hoisting cylinder. It is characterized in that it is formed so as to be movable to the work position that projects over the surface.

また、前記リーダ昇降梯子は、前記リーダの長手方向に沿って互いに平行に設けられた一対の縦桟と、該一対の縦桟同士を繋ぐ複数の横桟とを有した梯子本体と、該梯子本体を前記格納位置または前記作業位置に保持可能な固定部材とを備え、前記梯子本体及び前記固定部材は、前記リーダの側面に設けた回動ピンを軸として前後方向にそれぞれ回動可能に取り付けられるとともに、前記格納位置では、前記梯子本体の回動端部と前記固定部材の回動基部との重合部を固定ピンで互いに回動不能に連結され、前記作業位置では、前記梯子本体の回動端部と前記固定部材の回動端部との重合部を前記固定ピンで互いに回動不能に連結されていることを特徴とし、前記リーダ昇降梯子は、前記複数のリーダ部材にそれぞれ対応して設けられた複数の梯子部材を互いに間隔をあけて配置することにより、前記格納位置と前記作業位置とに各梯子部材ごとに個別に移動可能であることを特徴としている。 The leader lifting ladder includes a ladder main body having a pair of vertical bars provided in parallel with each other along a longitudinal direction of the reader and a plurality of horizontal bars connecting the pair of vertical bars, and the ladder. A fixing member capable of holding the main body at the retracted position or the working position, and the ladder main body and the fixing member are attached so as to be rotatable in the front-rear direction around a rotation pin provided on a side surface of the reader. In the retracted position, the overlapping portion of the rotation end portion of the ladder body and the rotation base portion of the fixing member are connected to each other by a fixing pin so as not to rotate, and in the working position, the ladder body rotates. The overlapping portion of the moving end portion and the rotating end portion of the fixing member is connected to each other by the fixing pin so as not to rotate, and the leader lifting ladder corresponds to each of the plurality of leader members. Multiple provided By spaced from each other a ladder member, it is characterized in that it is independently movable in the said working position and said storage position for each ladder member.

本発明によれば、リーダ昇降梯子がリーダの側面に対して格納位置と作業位置とに移動可能に形成されているので、輸送時にはコンパクトに折り畳んで左右ハウス間に収容できるうえに、使用時には張り出した梯子本体の横桟に足を掛けることが可能となり、リーダを安全に昇降することができる。また、梯子本体の回動端部が固定部材の回動端部及び回動基部のそれぞれに選択的に連結されるので、梯子の構造を簡素化することができ、所望する位置に容易に組み立てることができる。 According to the present invention, the leader raising / lowering ladder is formed so as to be movable between the storage position and the working position with respect to the side surface of the leader. It is possible to put a foot on the horizontal rail of the ladder main body, and the reader can be lifted and lowered safely. Further, since the rotation end of the ladder body is selectively connected to the rotation end and the rotation base of the fixing member, the ladder structure can be simplified and easily assembled at a desired position. be able to.

本発明の一形態例を示す杭打機の側面図である。It is a side view of a pile driver which shows one example of the present invention. 同じく正面図である。It is also a front view. 同じく平面図である。It is also a plan view. 同じくリーダ昇降梯子を作業位置で保持した状態を示す要部背面図である。It is a principal part rear view which similarly shows the state which hold | maintained the leader raising / lowering ladder in the working position. 同じくリーダ昇降梯子を作業位置で保持した状態を示す要部平面図である。It is a principal part top view which shows the state which similarly hold | maintained the leader raising / lowering ladder in the working position. 同じくリーダ昇降梯子を格納位置で保持した状態を示す要部平面図である。It is a principal part top view which shows the state which similarly hold | maintained the leader raising / lowering ladder in the storing position.

図１乃至図６は、本発明の杭打機の一形態例を示す図である。杭打機１１は、図１乃至図３に示すように、クローラ１２ａを備えた下部走行体１２と、該下部走行体１２の上部に旋回可能に設けられた上部旋回体１３とで構成されたベースマシン１４と、上部旋回体１３の前部に複数のリーダ部材を互いに着脱可能に連結して起伏可能に設けられたリーダ１５と、該リーダ１５を後方から支持する起伏シリンダ１６とを備えている。また、上部旋回体１３の前部には、リーダ１５を起伏可能に支持するフロントブラケット１７が設けられ、上部旋回体１３の前部上方には、油圧配管を支持する配管支持部材１８が設けられている。さらに、上部旋回体１３の右側方前部には運転室１９が、右側方後部には機器収納ハウス２０が、左側方にはエンジン収納ハウス２１がそれぞれ設けられている。 FIG. 1 thru | or FIG. 6 is a figure which shows one example of a pile driver of this invention. As shown in FIGS. 1 to 3, the pile driving machine 11 is composed of a lower traveling body 12 provided with a crawler 12 a and an upper revolving body 13 provided on the upper portion of the lower traveling body 12 so as to be able to swivel. A base machine 14, a leader 15 provided so as to be undulated by removably connecting a plurality of leader members to the front part of the upper swing body 13, and a raising / lowering cylinder 16 for supporting the leader 15 from the rear. Yes. Further, a front bracket 17 that supports the leader 15 so as to be raised and lowered is provided at the front portion of the upper swing body 13, and a pipe support member 18 that supports hydraulic piping is provided above the front portion of the upper swing body 13. ing. Further, a driver's cab 19 is provided at the front right side of the upper swing body 13, an equipment storage house 20 is provided at the rear right side, and an engine storage house 21 is provided at the left side.

リーダ１５は、前記フロントブラケット１７に設けられたベースマシン幅方向の支軸２２に回動可能に取り付けられた下部リーダ２３と、該下部リーダ２３の上部に連結される中間リーダ２４と、該中間リーダ２４の上部に連結される上部リーダ２５とに分割形成され、さらに、中間リーダ２４は、中間第１リーダ部材２４ａと中間第２リーダ部材２４ｂと中間第３リーダ部材２４ｃとに分割形成され、上部リーダ２５は、上部第１リーダ部材２５ａと上部第２リーダ部材２５ｂとに分割形成されている。これらの各リーダ部材は、それぞれボルト・ナットを使用してフランジ部材で着脱可能に連結されている。 The reader 15 includes a lower reader 23 rotatably attached to a support shaft 22 provided in the front bracket 17 in the width direction of the base machine, an intermediate reader 24 connected to the upper portion of the lower reader 23, and the intermediate reader 24. The intermediate reader 24 is divided into an upper first reader member 24a, an intermediate second reader member 24b, and an intermediate third reader member 24c. The upper reader 25 is divided into an upper first reader member 25a and an upper second reader member 25b. Each of these leader members is detachably connected by a flange member using bolts and nuts.

起伏シリンダ１６のシリンダロッド１６ａの先端部と中間リーダ２４とは、中間第２リーダ部材２４ｂの後面に設けられたシリンダブラケット２４ｄに接続ピンを介して回動可能に連結されている。また、上部リーダ２５の上端部にはトップシーブブロック２６が、下部リーダ２３の下部前方には振止部材２７がそれぞれ配置されており、リーダ１５の前面には作業装置であるオーガ２８が昇降可能に装着されるとともに、該オーガ２８を昇降させるためのチェーン式の昇降装置２９が設けられている。 The tip of the cylinder rod 16a of the hoisting cylinder 16 and the intermediate leader 24 are rotatably connected to a cylinder bracket 24d provided on the rear surface of the intermediate second leader member 24b via a connection pin. Further, a top sheave block 26 is disposed at the upper end of the upper leader 25, and a rocking member 27 is disposed in front of the lower part of the lower leader 23. An auger 28 as a working device can be moved up and down on the front surface of the leader 15. A chain-type lifting device 29 for lifting and lowering the auger 28 is provided.

オーガ２８は、リーダ１５の左右両側に設けられた一対のガイドパイプ３０をオーガ２８の後部側に設けた左右一対の上部ガイドギブ３１及び下部ガイドギブ３２で把持した状態でリーダ１５に沿って昇降するもので、オーガ２８の上下には、下部リーダ２３の下端部に設けられた駆動スプロケット３３と、前記上部リーダ２５の上端部に設けられた従動スプロケット３４との間に架け渡された昇降チェーン３５の両端がそれぞれ取り付けられている。チェーン式の昇降装置２９は、駆動スプロケット３３をオーガ昇降用油圧モータによって駆動し、該駆動スプロケット３３と従動スプロケット３４とに掛け回された昇降チェーン３５を上下方向に移動させることにより、リーダ１５に沿ってオーガ２８を昇降させる。 The auger 28 is moved up and down along the leader 15 in a state where a pair of guide pipes 30 provided on the left and right sides of the leader 15 are held by a pair of left and right upper guide gibs 31 and lower guide gibs 32 provided on the rear side of the auger 28. On the upper and lower sides of the auger 28, an elevating chain 35 spanned between a drive sprocket 33 provided at the lower end portion of the lower leader 23 and a driven sprocket 34 provided at the upper end portion of the upper leader 25. Both ends are attached respectively. The chain-type lifting device 29 drives the drive sprocket 33 with an auger lifting hydraulic motor, and moves the lifting chain 35 wound around the driving sprocket 33 and the driven sprocket 34 in the vertical direction, thereby causing the reader 15 to move. The auger 28 is moved up and down along.

リーダ１５の右側面には、図２乃至図６に示すように、長手方向に沿ってリーダ昇降梯子３６が設けられており、例えば、オーガ２８への掘削スクリュー（図示せず）やロッド（図示せず）などの接続確認や、非常時の補修作業などを行う場合に足場として使用される。このリーダ昇降梯子３６は、各リーダ部材に対応して設けられた複数の梯子部材を直線状に等間隔でそれぞれ配置したもので、具体的には、下部リーダ２３に対応する第１梯子部材３７と、中間第１リーダ部材２４ａに対応する第２梯子部材３８と、中間第２リーダ部材２４ｂに対応する第３梯子部材３９と、中間第３リーダ部材２４ｃに対応する第４梯子部材４０と、上部第１リーダ部材２５ａに対応する第５梯子部材４１とで構成されている。 As shown in FIGS. 2 to 6, a leader elevating ladder 36 is provided on the right side surface of the leader 15 along the longitudinal direction. For example, a drilling screw (not shown) or a rod (not shown) to the auger 28 is provided. (Not shown) is used as a scaffold when performing connection confirmations, etc., or performing emergency repair work. The leader raising / lowering ladder 36 is formed by arranging a plurality of ladder members provided corresponding to the respective leader members in a straight line at equal intervals, and specifically, a first ladder member 37 corresponding to the lower leader 23. A second ladder member 38 corresponding to the intermediate first leader member 24a, a third ladder member 39 corresponding to the intermediate second reader member 24b, a fourth ladder member 40 corresponding to the intermediate third leader member 24c, It is comprised with the 5th ladder member 41 corresponding to the upper 1st leader member 25a.

下部リーダ２３及び中間リーダ２４に設けられた各梯子部材３７〜４０は、全て同一形状であり、リーダ１５の側面に沿わせた格納位置（図６）と、起伏シリンダ１６を伸長してリーダ１５を起立させた状態で、リーダ１５の側面よりも外側に張り出した作業位置（図５）とに移動可能に形成されている。これにより、各梯子部材３７〜４０は、リーダ１５を倒伏させるときは、格納位置にそれぞれ折り畳まれて、運転室１９や機器収納ハウス２０との干渉を回避しつつ、左右ハウス２０，２１間にリーダ１５と一体で収容される。一方、リーダ１５を起立させるときは、作業位置にそれぞれ拡張されて、昇降可能な足場が形成される。また、上部リーダ２５に設けられた第５梯子部材４１は、既存の梯子部材であって上部第１リーダ部材２５ａの側面に溶接された、いわゆる固定式のものである。 The ladder members 37 to 40 provided in the lower leader 23 and the intermediate leader 24 are all the same shape, and the storage position (FIG. 6) along the side surface of the leader 15 and the raising / lowering cylinder 16 are extended to the leader 15. Is movably formed to a work position (FIG. 5) projecting outward from the side surface of the reader 15. Thereby, each ladder member 37-40 is each folded by the storage position when lying down the leader 15, avoiding interference with the driver's cab 19 or the equipment storage house 20, and between the left and right houses 20, 21 It is accommodated together with the reader 15. On the other hand, when the reader 15 is erected, a scaffold that is extended to the working position and can be lifted is formed. The fifth ladder member 41 provided in the upper leader 25 is an existing ladder member and is a so-called fixed type welded to the side surface of the upper first leader member 25a.

各梯子部材３７〜４０は、図４乃至図６に示すように、リーダ１５の長手方向に沿って互いに平行に設けられた一対の縦桟４２ａ，４２ａと、該一対の縦桟４２ａ，４２ａ同士を繋ぐ複数の横桟４２ｂとを有した梯子本体４２と、該梯子本体４２を格納位置または作業位置に保持可能な固定部材４３とを備えている。 As shown in FIGS. 4 to 6, each of the ladder members 37 to 40 includes a pair of vertical bars 42 a and 42 a provided in parallel with each other along the longitudinal direction of the reader 15, and the pair of vertical bars 42 a and 42 a. A ladder main body 42 having a plurality of horizontal rails 42b that connect the two, and a fixing member 43 that can hold the ladder main body 42 in the retracted position or the working position.

リーダ１５側面におけるガイドパイプ３０後部の上下２箇所には、梯子本体４２に対応する二股状の前側ブラケット１５ａ，１５ａが、リーダ１５の後面端部の上下２箇所には、固定部材４３に対応する二股状の後側ブラケット１５ｂ，１５ｂが互いに間隔をあけてそれぞれ設けられている。また、各ブラケット１５ａ，１５ｂは、ガイドパイプ３０よりも外側に突出しないように形成されている。さらに、一対の縦桟４２ａ，４２ａには、回動基部となる一方側の縦桟４２ａの上下２箇所にリーダ側連結部４２ｃ，４２ｃが、回動端部となる他方側の縦桟４２ａの上下２箇所に二股状の固定側連結部４２ｄ，４２ｄが互いに間隔をあけてそれぞれ設けられている。梯子本体４２は、リーダ側連結部４２ｃを前側ブラケット１５ａに差し込むとともに、互いの重合部に設けたピン挿通孔１５ｃ，４２ｅに回動ピン４４を挿通することにより、リーダ１５に対して前後方向に回動可能に取り付けられている。 Bifurcated front brackets 15 a and 15 a corresponding to the ladder main body 42 are provided at two positions above and below the rear portion of the guide pipe 30 on the side surface of the leader 15. Bifurcated rear brackets 15b, 15b are provided at intervals from each other. Each bracket 15a, 15b is formed so as not to protrude outward from the guide pipe 30. Further, the pair of vertical rails 42a and 42a has leader-side connecting portions 42c and 42c at two locations on the upper and lower sides of the vertical rail 42a on one side serving as a rotation base, and the vertical rail 42a on the other side serving as a rotation end. Bifurcated fixed-side coupling portions 42d and 42d are provided at two positions in the upper and lower portions, respectively, spaced from each other. The ladder main body 42 inserts the leader side connecting portion 42c into the front bracket 15a, and inserts the rotation pin 44 into the pin insertion holes 15c and 42e provided in the overlapping portions of the ladder main body 42 in the front-rear direction. It is pivotally attached.

固定部材４３は、上下一対のリンクアーム４３ａ，４３ａ間を補強板４３ｂで接合したもので、補強板４３ｂの中央には丸棒材をコ字状に曲げて形成した取手部４３ｃが設けられている。また、固定部材４３は、リンクアーム４３ａの回動基部を後側ブラケット１５ｂに差し込むとともに、互いの重合部に設けたピン挿通孔１５ｄ，４３ｄに回動ピン４５を挿通することにより、リーダ１５に対して前後方向に回動可能に取り付けられている。 The fixing member 43 is formed by joining a pair of upper and lower link arms 43a and 43a with a reinforcing plate 43b, and a handle 43c formed by bending a round bar into a U-shape is provided at the center of the reinforcing plate 43b. Yes. In addition, the fixing member 43 inserts the rotation base of the link arm 43a into the rear bracket 15b and inserts the rotation pin 45 into the pin insertion holes 15d and 43d provided in the overlapping portions of the link arm 43a. On the other hand, it is attached so as to be rotatable in the front-rear direction.

さらに、リンクアーム４３ａの回動端部を梯子本体４２の固定側連結部４２ｄに差し込むとともに、互いの重合部に設けたピン挿通孔４２ｆ，４３ｅに固定ピン４６を挿通してベータピン４７で抜け止めすることにより、梯子本体４２と固定部材４３とが互いに回動不能に連結され、各梯子部材３７〜４０は、リーダ１５の側面よりも外側に張り出した作業位置にそれぞれ保持される（図４及び図５）。 Further, the rotation end portion of the link arm 43a is inserted into the fixed side connecting portion 42d of the ladder main body 42, and the fixing pin 46 is inserted into the pin insertion holes 42f and 43e provided in the overlapping portions to prevent the beta arm 47 from coming off. By doing so, the ladder main body 42 and the fixing member 43 are non-rotatably connected to each other, and the respective ladder members 37 to 40 are respectively held at work positions that protrude outward from the side surface of the reader 15 (see FIG. 4 and FIG. 4). FIG. 5).

一方、固定ピン４６を抜いて、リンクアーム４３ａの回動基部に設けた突出部４３ｆを梯子本体４２の固定側連結部４２ｄに差し込むとともに、互いの重合部に設けたピン挿通孔４２ｆ，４３ｇに固定ピン４６を挿通してベータピン４７で抜け止めすることにより、梯子本体４２と固定部材４３とが互いに回動不能に連結され、各梯子部材３７〜４０は、リーダ１５の側面に沿わせた格納位置にそれぞれ保持される（図６）。回動ピン４４，４５及び固定ピン４６の互いの位置関係は、各梯子部材３７〜４０を格納した状態で、ガイドパイプ３０よりも外側に突出しないように考慮されており、リーダ１５を倒伏した状態であっても、運転室１９や機器収納ハウス２０の側壁４８に対して水平方向に一定の距離を保っている。 On the other hand, the fixing pin 46 is pulled out, and the protruding portion 43f provided at the rotation base portion of the link arm 43a is inserted into the fixed side connecting portion 42d of the ladder main body 42, and the pin insertion holes 42f and 43g provided at the overlapping portions of each other. The ladder main body 42 and the fixing member 43 are non-rotatably connected to each other by inserting the fixing pin 46 and preventing it from being removed by the beta pin 47, and each of the ladder members 37 to 40 is stored along the side surface of the reader 15. Each position is held (FIG. 6). The positional relationship between the rotation pins 44 and 45 and the fixed pin 46 is considered so as not to protrude outward from the guide pipe 30 in a state where the ladder members 37 to 40 are stored, and the leader 15 is laid down. Even in the state, a certain distance is maintained in the horizontal direction with respect to the cab 19 and the side wall 48 of the equipment storage house 20.

ここで、杭打機１１を輸送する際に、リーダ１５を倒伏させてリーダ昇降梯子３６を左右ハウス２０，２１間に収容する手順を説明する。まず、リーダ１５を起立させた状態（図１の実線）で、オーガ２８を下部リーダ２３の位置に降下させる。次に、起伏シリンダ１６を縮小してリーダ１５の倒伏操作を行い、リーダ１５の倒伏動作に伴って各梯子部材３７〜４０を支軸２２まわりに下方に円弧移動させるとともに、第１梯子部材３７を運転室１９の手前に位置させた状態でリーダ１５を停止させる。このとき、リーダ１５は所定の起伏角度で、例えば、上部旋回体１３に対して略４５度の角度で保持されている。 Here, when transporting the pile driving machine 11, a procedure is described in which the leader 15 is laid down and the leader elevating ladder 36 is accommodated between the left and right houses 20, 21. First, the auger 28 is lowered to the position of the lower leader 23 in a state where the leader 15 is erected (solid line in FIG. 1). Next, the hoisting cylinder 16 is contracted to perform the tilting operation of the leader 15, and the ladder members 37 to 40 are circularly moved downward around the support shaft 22 along with the tilting operation of the leader 15, and the first ladder member 37 is moved. The reader 15 is stopped in a state where is positioned in front of the cab 19. At this time, the reader 15 is held at a predetermined undulation angle, for example, an angle of approximately 45 degrees with respect to the upper swing body 13.

次に、運転室１９前部のフロアフレーム１３ａに昇り、第１梯子部材３７を固定ピン４６の抜き差しによって作業位置から格納位置に折り畳む。次に、運転室１９の天井に昇り、同様にして第２梯子部材３８を格納位置に折り畳む。この後、リーダ１５の倒伏操作を行いながら、第３梯子部材３９を運転室１９の天井付近に、第４梯子部材４０を機器収納ハウス２０の天井付近に順次降下させて、それぞれ格納位置に折り畳む。最後に、リーダ１５を限界まで倒伏させることにより（図１の想像線）、各梯子部材３７〜４０がリーダ１５と共に左右ハウス２０，２１間に収容される。一方、杭打機１１を使用する際には、上述の手順と逆の手順を実行することにより、リーダ１５を起立させながら各梯子部材３７〜４０を作業位置に順次拡張する。 Next, it rises to the floor frame 13a in the front part of the cab 19 and the first ladder member 37 is folded from the working position to the retracted position by inserting and removing the fixing pin 46. Next, it rises to the ceiling of the cab 19 and similarly folds the second ladder member 38 to the retracted position. Thereafter, while performing the inclining operation of the reader 15, the third ladder member 39 is sequentially lowered to near the ceiling of the cab 19 and the fourth ladder member 40 is lowered to the vicinity of the ceiling of the equipment storage house 20 and folded to the storage position. . Finally, the ladder 15 is accommodated between the left and right houses 20 and 21 together with the leader 15 by causing the leader 15 to fall down to the limit (imaginary line in FIG. 1). On the other hand, when the pile driving machine 11 is used, the ladder members 37 to 40 are sequentially extended to the working position while the leader 15 is erected by executing a procedure reverse to the above-described procedure.

このように、各梯子部材３７〜４０がリーダ１５の側面に対して格納位置と作業位置とに移動可能に形成されているので、輸送時にはコンパクトに折り畳んで左右ハウス２０，２１間に収容できるうえに、使用時には張り出した梯子本体４２の横桟４２ｂに足を掛けることが可能となり、リーダ１５を安全に昇降することができる。また、梯子本体４２の回動端部がリンクアーム４３ａの回動端部及び回動基部のそれぞれに選択的に連結されるので、梯子の構造を簡素化することができ、所望する位置に容易に組み立てることができる。さらに、各梯子部材３７〜４０が作業位置と格納位置とに各梯子部材ごとに個別に移動可能であるため、リーダ１５の側面に備えた状態であっても、リーダ１５の起伏動作と連携することにより、所望する位置に確実に組み立てることができる。 As described above, each ladder member 37 to 40 is formed to be movable between the storage position and the working position with respect to the side surface of the reader 15, so that it can be folded between the left and right houses 20 and 21 during transportation. In addition, it is possible to put a foot on the horizontal rail 42b of the protruding ladder body 42 during use, and the leader 15 can be lifted and lowered safely. Further, since the rotating end portion of the ladder main body 42 is selectively connected to each of the rotating end portion and the rotating base portion of the link arm 43a, the structure of the ladder can be simplified and easily placed at a desired position. Can be assembled into. Further, since each ladder member 37 to 40 can be individually moved to the working position and the storage position for each ladder member, even when the ladder member 37 is provided on the side surface of the reader 15, it cooperates with the raising / lowering operation of the reader 15. Thus, it can be reliably assembled at a desired position.

なお、本発明は、可動式のリーダ昇降梯子の形態の一つとして梯子本体の片側に固定部材を設けているが、両側に設けることによって平行リンク機構を形成することもできる。また、梯子本体を所定の位置に保持可能な構造であれば、固定部材にはリンクアームをピン結合したものに限定されず、梯子本体の回動軸にロック機構などを備えてもよい。さらに、梯子本体の形状もこれに限定されず、リーダ部材の寸法などに応じて縦桟や横桟の形状や取り付け位置を適宜に変更することができる。 In the present invention, the fixing member is provided on one side of the ladder main body as one of the forms of the movable leader raising / lowering ladder, but the parallel link mechanism can be formed by providing the fixing member on both sides. In addition, as long as the ladder main body can be held at a predetermined position, the fixing member is not limited to the one in which the link arm is pin-coupled, and a lock mechanism may be provided on the rotation shaft of the ladder main body. Further, the shape of the ladder main body is not limited to this, and the shape and mounting position of the vertical beam and the horizontal beam can be appropriately changed according to the dimensions of the leader member.

１１…杭打機、１２…下部走行体、１２ａ…クローラ、１３…上部旋回体、１３ａ…フロアフレーム、１４…ベースマシン、１５…リーダ、１５ａ…前側ブラケット、１５ｂ…後側ブラケット、１５ｃ，１５ｄ…ピン挿通孔、１６…起伏シリンダ、１６ａ…シリンダロッド、１７…フロントブラケット、１８…配管支持部材、１９…運転室、２０…機器収納ハウス、２１…エンジン収納ハウス、２２…支軸、２３…下部リーダ、２４…中間リーダ、２４ａ…中間第１リーダ部材、２４ｂ…中間第２リーダ部材、２４ｃ…中間第３リーダ部材、２４ｄ…シリンダブラケット、２５…上部リーダ、２５ａ…上部第１リーダ部材、２５ｂ…上部第２リーダ部材、２６…トップシーブブロック、２７…振止部材、２８…オーガ、２９…昇降装置、３０…ガイドパイプ、３１…上部ガイドギブ、３２…下部ガイドギブ、３３…駆動スプロケット、３４…従動スプロケット、３５…昇降チェーン、３６…リーダ昇降梯子、３７…第１梯子部材、３８…第２梯子部材、３９…第３梯子部材、４０…第４梯子部材、４１…第５梯子部材、４２…梯子本体、４２ａ…縦桟、４２ｂ…横桟、４２ｃ…リーダ側連結部、４２ｄ…固定側連結部、４２ｅ，４２ｆ…ピン挿通孔、４３…固定部材、４３ａ…リンクアーム、４３ｂ…補強板、４３ｃ…取手部、４３ｄ，４３ｅ…ピン挿通孔、４３ｆ…突出部、４３ｇ…ピン挿通孔、４４，４５…回動ピン、４６…固定ピン、４７…ベータピン、４８…側壁 DESCRIPTION OF SYMBOLS 11 ... Pile driver, 12 ... Lower traveling body, 12a ... Crawler, 13 ... Upper turning body, 13a ... Floor frame, 14 ... Base machine, 15 ... Leader, 15a ... Front bracket, 15b ... Rear bracket, 15c, 15d DESCRIPTION OF SYMBOLS ... Pin insertion hole, 16 ... Lifting cylinder, 16a ... Cylinder rod, 17 ... Front bracket, 18 ... Piping support member, 19 ... Driver's cab, 20 ... Equipment storage house, 21 ... Engine storage house, 22 ... Support shaft, 23 ... Lower reader, 24 ... intermediate reader, 24a ... intermediate first reader member, 24b ... intermediate second reader member, 24c ... intermediate third reader member, 24d ... cylinder bracket, 25 ... upper leader, 25a ... upper first reader member, 25b ... Upper second leader member, 26 ... Top sheave block, 27 ... Anti-rest member, 28 ... Auger, 29 ... Lifting device, 30 Guide pipe, 31 ... Upper guide give, 32 ... Lower guide give, 33 ... Drive sprocket, 34 ... Drive sprocket, 35 ... Lifting chain, 36 ... Leader lift ladder, 37 ... First ladder member, 38 ... Second ladder member, 39 ... 3rd ladder member, 40 ... 4th ladder member, 41 ... 5th ladder member, 42 ... Ladder body, 42a ... Vertical beam, 42b ... Horizontal beam, 42c ... Reader side connection part, 42d ... Fixed side connection part, 42e, 42f ... Pin insertion hole, 43 ... Fixing member, 43a ... Link arm, 43b ... Reinforcement plate, 43c ... Handle part, 43d, 43e ... Pin insertion hole, 43f ... Projection part, 43g ... Pin insertion hole, 44, 45 ... times Moving pin, 46 ... Fixed pin, 47 ... Beta pin, 48 ... Side wall

Claims

クローラを備えた下部走行体と、該下部走行体の上部に旋回可能に設けられた上部旋回体とで構成されたベースマシンと、前記上部旋回体の前部に複数のリーダ部材を互いに着脱可能に連結して起伏可能に設けられたリーダと、該リーダを後方から支持する起伏シリンダと、前記リーダの側面に設けられたリーダ昇降梯子とを備えた杭打機において、前記リーダ昇降梯子は、前記リーダの側面に沿わせた格納位置と、前記起伏シリンダを伸長して前記リーダを起立させた状態で、前記リーダの側面よりも外側に張り出した作業位置とに移動可能に形成されていることを特徴とする杭打機。 A base machine composed of a lower traveling body provided with a crawler and an upper revolving body provided on the upper portion of the lower traveling body, and a plurality of leader members can be attached to and detached from the front part of the upper revolving body. In a pile driving machine comprising a leader connected to the leader, a raising and lowering cylinder for supporting the leader from the rear, and a leader raising and lowering ladder provided on a side surface of the leader, the leader raising and lowering ladder includes: It is formed so as to be movable between a storage position along the side surface of the leader and a work position extending outward from the side surface of the leader in a state where the undulation cylinder is extended to erect the leader. Pile driver characterized by.

前記リーダ昇降梯子は、前記リーダの長手方向に沿って互いに平行に設けられた一対の縦桟と、該一対の縦桟同士を繋ぐ複数の横桟とを有した梯子本体と、該梯子本体を前記格納位置または前記作業位置に保持可能な固定部材とを備え、前記梯子本体及び前記固定部材は、前記リーダの側面に設けた回動ピンを軸として前後方向にそれぞれ回動可能に取り付けられるとともに、前記格納位置では、前記梯子本体の回動端部と前記固定部材の回動基部との重合部を固定ピンで互いに回動不能に連結され、前記作業位置では、前記梯子本体の回動端部と前記固定部材の回動端部との重合部を前記固定ピンで互いに回動不能に連結されていることを特徴とする請求項１記載の杭打機。 The leader lifting ladder includes a ladder main body having a pair of vertical bars provided in parallel to each other along the longitudinal direction of the reader, and a plurality of horizontal bars connecting the pair of vertical bars, and the ladder main body. A fixing member that can be held in the storage position or the working position, and the ladder body and the fixing member are attached to each other so as to be rotatable in the front-rear direction around a rotation pin provided on a side surface of the reader. In the retracted position, the overlapping portion of the rotation end portion of the ladder body and the rotation base portion of the fixing member are non-rotatably connected to each other by a fixing pin, and in the working position, the rotation end of the ladder body. The pile driving machine according to claim 1, wherein overlapping portions of the portion and the rotation end portion of the fixing member are connected to each other by the fixing pin so as not to rotate.

前記リーダ昇降梯子は、前記複数のリーダ部材にそれぞれ対応して設けられた複数の梯子部材を互いに間隔をあけて配置することにより、前記格納位置と前記作業位置とに各梯子部材ごとに個別に移動可能であることを特徴とする請求項１又は２記載の杭打機。 The leader raising / lowering ladder is individually arranged for each ladder member at the storage position and the working position by arranging a plurality of ladder members provided respectively corresponding to the plurality of leader members at intervals. The pile driver according to claim 1, wherein the pile driver is movable.