JP2024011444A - Tool conversion jig for soil improvement machine - Google Patents

Tool conversion jig for soil improvement machine Download PDF

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JP2024011444A
JP2024011444A JP2022113410A JP2022113410A JP2024011444A JP 2024011444 A JP2024011444 A JP 2024011444A JP 2022113410 A JP2022113410 A JP 2022113410A JP 2022113410 A JP2022113410 A JP 2022113410A JP 2024011444 A JP2024011444 A JP 2024011444A
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tool
main body
obstacle removal
conversion jig
rod
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克仁 田中
Katsuto Tanaka
静香 白石
Shizuka Shiraishi
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Nippon Sharyo Ltd
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Nippon Sharyo Ltd
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Abstract

【課題】簡単な構成で地盤改良用ツールから障害物撤去用ツールに変換することが可能な地盤改良機のツール変換治具を提供する。【解決手段】ツール変換治具２４は、上部側ロッドの雌側筒部に連結されるジョイント部２４ａと、ジョイント部２４ａの下部に設けられ、障害物撤去用ツールをボルト締結する取付部２４ｂと、これらジョイント部２４ａと取付部２４ｂとを一体に結合する本体部２４ｃとを備える。また、本体部２１ｃの下部に延長筒部２４ｄを設ける。取付部２４ｂは、回転軸周方向にボルト挿通孔２４ｆが複数設けられ、これらボルト挿通孔２４ｆに挿通した取付ボルトにより、取付部２４ｂの下面に障害物撤去用ツールが取り付けられる。また、取付部２４ｂの上面と本体部２４ｃの外側面とに亘って、三角形状の補強部材２４ｇが回転軸周方向に複数固設される。【選択図】図１The present invention provides a tool conversion jig for a soil improvement machine that can convert a soil improvement tool into an obstacle removal tool with a simple configuration. A tool conversion jig 24 includes a joint part 24a connected to a female cylinder part of an upper rod, and a mounting part 24b provided at the lower part of the joint part 24a to which an obstacle removal tool is bolted. , and a main body portion 24c that integrally connects the joint portion 24a and the attachment portion 24b. Further, an extension cylinder portion 24d is provided at the lower part of the main body portion 21c. The attachment portion 24b is provided with a plurality of bolt insertion holes 24f in the circumferential direction of the rotating shaft, and an obstacle removal tool is attached to the lower surface of the attachment portion 24b using attachment bolts inserted through the bolt insertion holes 24f. Further, a plurality of triangular reinforcing members 24g are fixedly provided in the circumferential direction of the rotating shaft over the upper surface of the attachment portion 24b and the outer surface of the main body portion 24c. [Selection diagram] Figure 1

Description

本発明は、地盤改良機のツール変換治具に関し、詳しくは、地盤改良用ツールを取り外した中空ロッドに、障害物撤去用ツールを取り付けるための地盤改良機のツール変換治具に関する。 The present invention relates to a tool conversion jig for a soil improvement machine, and more particularly to a tool conversion jig for a soil improvement machine for attaching an obstacle removal tool to a hollow rod from which a soil improvement tool has been removed.

従来、地盤改良機は、地盤改良作業中に地盤改良用ツール（掘削ヘッド）が転石や硬質地盤に当接すると、地盤改良機を一旦作業現場から撤退させ、障害物撤去機を作業現場まで移動させて転石や硬質地盤の撤去作業を行っていた。そこで、地盤改良用ツールの下部に削孔ビットを一体に設け、地盤改良機によって転石や硬質地盤の撤去を行うようにしたものが提案されている（例えば、特許文献１参照。）。 Conventionally, when the soil improvement tool (excavation head) comes into contact with boulders or hard ground during soil improvement work, the soil improvement machine is temporarily withdrawn from the work site and the obstacle removal machine is moved to the work site. They were also working to remove boulders and hard ground. Therefore, a tool for ground improvement has been proposed in which a drilling bit is integrally provided at the bottom of the tool, and boulders and hard ground are removed by the ground improvement machine (see, for example, Patent Document 1).

特開平９－２２１７４５号公報Japanese Patent Application Publication No. 9-221745

しかし、上述の特許文献１のものでは、地盤改良用ツールに削孔ビットを一体に設けることから、地盤改良用ツールの構成が大掛りになっていた。 However, in the above-mentioned patent document 1, since a drilling bit is integrally provided in the ground improvement tool, the structure of the ground improvement tool is large-scale.

そこで本発明は、簡単な構成で地盤改良用ツールから障害物撤去用ツールに変換することが可能な地盤改良機のツール変換治具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 tool conversion jig for a soil improvement machine that can convert a soil improvement tool into an obstacle removal tool with a simple configuration.

上記目的を達成するため、本発明の地盤改良機のツール変換治具は、地盤改良機の回転駆動装置に装着されるロッドに着脱可能に設けられ、地盤改良作業を行う地盤改良用ツールから障害物撤去作業を行う障害物撤去用ツールに交換することが可能なツール変換治具であって、前記ツール変換治具は、前記ロッドの下端連結部に回転軸と同軸に連結されるジョイント部と、前記障害物撤去用ツールがボルト締結される取付部と、前記ジョイント部及び前記取付部を一体に結合する本体部とからなり、前記取付部は、前記障害物撤去用ツールが取り付けられる板面を有する板体からなり、回転軸周方向に複数設けられるボルト挿通孔を有していることを特徴としている。 In order to achieve the above object, the tool conversion jig for the ground improvement machine of the present invention is removably installed on a rod attached to the rotary drive device of the ground improvement machine, and is designed to prevent obstructions from the ground improvement tool that performs soil improvement work. A tool conversion jig that can be replaced with an obstacle removal tool for removing objects, the tool conversion jig including a joint portion coaxially connected to a rotation axis to a lower end connection portion of the rod. , comprising a mounting part to which the obstacle removal tool is bolted, and a main body part that integrally connects the joint part and the mounting part, and the mounting part has a plate surface to which the obstacle removal tool is attached. It is characterized by having a plurality of bolt insertion holes provided in the circumferential direction of the rotating shaft.

また、前記障害物撤去用ツールが取り付けられる板面の反対側の板面と前記本体部の外側面とに亘って、回転軸周方向に複数設けられる補強部材を有していると好ましい。 Further, it is preferable that a plurality of reinforcing members are provided in the circumferential direction of the rotating shaft, spanning the plate surface opposite to the plate surface to which the obstacle removal tool is attached and the outer surface of the main body.

さらに、前記ジョイント部及び前記本体部は、回転軸方向に貫通する中空部が形成されていると好適である。加えて、前記本体部の下部には、前記ロッドの下端連結部と共通する連結構造を備えた延長筒部が設けられているとより好適である。 Furthermore, it is preferable that the joint portion and the main body portion have a hollow portion formed therethrough in the direction of the rotation axis. In addition, it is more preferable that the lower part of the main body part is provided with an extension tube part having a common connection structure with the lower end connection part of the rod.

本発明の地盤改良機のツール変換治具によれば、地盤改良用ツールから障害物撤去用ツールに変換することが可能となり、地盤改良機で障害物撤去作業も良好に行うことができ、作業効率の向上を図ることができる。また、回転軸と同軸に連結されるジョイント部によって中空ロッドとの連結も周知の連結構造が採用でき、簡便かつ力（トルク・推力）の伝達も良好なものである。さらに、ジョイント部及び取付部を一体に結合する本体部によって強度を高めることができる。 According to the tool conversion jig for a ground improvement machine of the present invention, it is possible to convert a soil improvement tool into an obstacle removal tool, and the soil improvement machine can also perform obstacle removal work well. Efficiency can be improved. In addition, a well-known connection structure can be used for connection to the hollow rod through a joint portion coaxially connected to the rotating shaft, which is simple and provides good transmission of force (torque and thrust). Furthermore, the strength can be increased by the main body portion that integrally connects the joint portion and the attachment portion.

また、障害物撤去用ツールが取り付けられる板面の反対側の板面と本体部の外側面とに亘って、回転軸周方向に複数設けられる補強部材を有しているので、本体部と板体とが強固に結合され、障害物撤去用ツールに付与する押し付け力を高めることができ、しかも、大径のツールに対応できるといった利点もある。さらに、ジョイント部及び本体部において回転軸方向に貫通する中空部が形成されているので、ツール変換治具を取り付けた状態のままで中空ロッドを継ぎ足すことが可能となり、加えて、延長筒部の構成と相俟って部品共通化も促進されることから、地盤改良機の種々の使用態様に適したツール変換治具が達成される。 In addition, since it has a plurality of reinforcing members provided in the circumferential direction of the rotation axis across the plate surface opposite to the plate surface to which the obstacle removal tool is attached and the outer surface of the main body, the main body and the plate It has the advantage of being firmly connected to the body, increasing the pressing force applied to the obstacle removal tool, and being able to handle large-diameter tools. Furthermore, since a hollow part is formed in the joint part and the main body part that penetrates in the direction of the rotation axis, it is possible to add a hollow rod with the tool conversion jig attached. Coupled with this structure, the commonality of parts is also promoted, so that a tool conversion jig suitable for various uses of the soil improvement machine can be achieved.

本発明の一形態例を示すツール変換治具の斜視図である。1 is a perspective view of a tool conversion jig showing an example of one embodiment of the present invention. 中空ロッドに障害物撤去用ツールを接続した地盤改良機の要部側面図である。FIG. 2 is a side view of a main part of a ground improvement machine in which an obstacle removal tool is connected to a hollow rod. 中空ロッドに地盤改良用ツールを接続した地盤改良機の側面図である。FIG. 2 is a side view of a soil improvement machine in which a soil improvement tool is connected to a hollow rod.

図３は、本発明のツール変換治具が用いられる地盤改良機１１を示すもので、地盤改良機１１は、クローラを備えた下部走行体１２と、該下部走行体１２上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の前部に立設したリーダ１５と、該リーダ１５を後方から支持するリーダ起伏シリンダ１６と、前記リーダ１５に昇降可能に設けられた回転駆動装置であるオーガ１７と、該オーガ１７に装着され回転トルクや推力が付与されるロッド（出力軸）として、例えば中空ロッド１８とを備えている。また、中空ロッド１８の上端には、図示は省略するが、注入ホースから地盤改良剤を導入するスイベルジョイントが設けられ、下端には、掘削刃１９ａ及び撹拌翼１９ｂを有する地盤改良用ツール（掘削ヘッド）２０が装着されている。 FIG. 3 shows a ground improvement machine 11 in which the tool conversion jig of the present invention is used. a base machine 14 consisting of an upper revolving body 13, a leader 15 erected at the front of the upper revolving body 13, a leader hoisting cylinder 16 supporting the leader 15 from behind, The auger 17 is a rotary drive device that can be provided, and a hollow rod 18, for example, is attached to the auger 17 and serves as a rod (output shaft) to which rotational torque and thrust are applied. Further, although not shown, the hollow rod 18 is provided with a swivel joint at the upper end for introducing the ground improvement agent from the injection hose, and at the lower end is provided with a ground improvement tool (excavation head) 20 is attached.

中空ロッド１８は、内部に地盤改良剤の流路（中空部）を備え、上部側ロッド２１と下部側ロッド２２とを同軸に連結して、リーダ１５よりも長尺に形成することが可能である。上部側ロッド２１と下部側ロッド２２とは、上部側ロッド２１の下端部に設けた雌側筒部（下端連結部）と、下部側ロッド２２の上端部に設けた雄側軸部（上端連結部）とを嵌合させ、雌側筒部と雄側軸部とに亘って、ロッド軸（回転軸）と直交する方向に２本の連結ピンを挿通して固定することにより連結される。また、リーダ１５の下部には、下部側ロッド２２を把持して、中空ロッド１８の鉛直性を確保する振れ止め部材２３が設けられている。 The hollow rod 18 has a flow path (hollow part) for the soil improvement agent therein, and can be formed to be longer than the leader 15 by coaxially connecting the upper rod 21 and the lower rod 22. be. The upper rod 21 and the lower rod 22 have a female cylinder part (lower end connecting part) provided at the lower end of the upper rod 21 and a male shaft part (upper end connecting part) provided at the upper end of the lower rod 22. The female cylinder part and the male shaft part are connected by inserting and fixing two connecting pins in a direction perpendicular to the rod axis (rotation axis). Further, a steady rest member 23 is provided at the lower part of the leader 15 to grip the lower rod 22 and ensure the verticality of the hollow rod 18.

このように形成された地盤改良機１１では、地盤改良作業を行っている最中に、地盤改良用ツール２０が転石や硬質地盤に当接すると、図１及び図２に示されるように、地盤改良用ツール２０を地上に引き上げた後、中空ロッド１８から地盤改良用ツール２０を取外す。そして、ツール変換治具２４を介して障害物撤去用ツール２５に変換して、転石や硬質地盤を撤去するための障害物撤去作業が行われる。 In the ground improvement machine 11 formed in this way, when the ground improvement tool 20 comes into contact with boulders or hard ground during ground improvement work, as shown in FIGS. 1 and 2, the ground improvement After lifting the soil improvement tool 20 above the ground, the soil improvement tool 20 is removed from the hollow rod 18. Then, the tool is converted into an obstacle removal tool 25 via the tool conversion jig 24, and obstacle removal work for removing boulders and hard ground is performed.

ツール変換治具２４は、上部側ロッド２１の雌側筒部２１ａに連結されるジョイント部２４ａと、ジョイント部２４ａの下部に設けられ、障害物撤去用ツール２５をボルト締結する取付部２４ｂと、これらジョイント部２４ａと取付部２４ｂとを一体に結合する本体部２４ｃとを備えている。また、本体部２４ｃの下部には、延長筒部２４ｄが設けられている。 The tool conversion jig 24 includes a joint part 24a connected to the female cylinder part 21a of the upper rod 21, a mounting part 24b provided at the lower part of the joint part 24a, and to which the obstacle removal tool 25 is bolted. It includes a main body portion 24c that integrally connects the joint portion 24a and the attachment portion 24b. Further, an extension tube portion 24d is provided at the lower part of the main body portion 24c.

ジョイント部２４ａは、上部側ロッド２１の雌側筒部２１ａに同軸に嵌合させる断面正六角形状の雄型に形成されている。また、ジョイント部２４ａには、前記上部側ロッド２１の雌側筒部２１ａに亘って２本の連結ピン２６，２６を挿通させるためのピン挿通溝２４ｅ，２４ｅが形成されている。 The joint portion 24a is formed in a male shape with a regular hexagonal cross section to be coaxially fitted into the female side cylinder portion 21a of the upper rod 21. In addition, pin insertion grooves 24e, 24e are formed in the joint portion 24a for inserting two connecting pins 26, 26 across the female cylinder portion 21a of the upper rod 21.

取付部２４ｂは、上部側ロッド２１よりも大径で、上部側ロッド２１と同軸に配される円板状、或いは円環板状（フランジ状）に形成され、ロッド軸周方向（回転軸周方向）にボルト挿通孔２４ｆが、複数連続して設けられ、これらボルト挿通孔２４ｆに挿通した取付ボルト２７により、取付部２４ｂの下面に障害物撤去用ツール２５が取り付けられる。また、取付部２４ｂの上面と本体部２４ｃの外側面とに亘って、三角形状の補強部材２４ｇがロッド軸周方向に複数固設されている。ボルト挿通孔２４ｆと補強部材２４ｇとは、ロッド軸周方向に等間隔にそれぞれ複数設けられるとともに、補強部材２４ｇは、ボルト挿通孔２４ｆよりも内周側に位置し、且つ、隣り合う２つのボルト挿通孔２４ｆ，２４ｆの周方向中間位置にそれぞれ配置されている。 The mounting portion 24b has a larger diameter than the upper rod 21, is formed in a disk shape or an annular plate shape (flange shape) disposed coaxially with the upper rod 21, and is arranged in the rod axis circumferential direction (rotation axis circumferential direction). A plurality of bolt insertion holes 24f are continuously provided in the direction (direction), and the obstacle removal tool 25 is attached to the lower surface of the attachment portion 24b by the attachment bolts 27 inserted through these bolt insertion holes 24f. Further, a plurality of triangular reinforcing members 24g are fixedly provided in the circumferential direction of the rod axis over the upper surface of the attachment portion 24b and the outer surface of the main body portion 24c. A plurality of bolt insertion holes 24f and reinforcing members 24g are each provided at equal intervals in the circumferential direction of the rod axis, and the reinforcing members 24g are located on the inner circumferential side of the bolt insertion holes 24f, and are located between two adjacent bolts. They are arranged at circumferentially intermediate positions between the insertion holes 24f and 24f, respectively.

本体部２４ｃは、上部側ロッド２１と同径に形成され、上部にジョイント部２４ａが、下部に取付部２４ｂがそれぞれ設けられている。また、延長筒部２４ｄは、上部側ロッド２１の雌側筒部（下端連結部）２１ａと共通する連結構造として雌側筒部を備え、換言すると、上部側ロッド２１と同径であって内部に雌型のジョイント部（図示せず）を備え、該ジョイント部に形成したピン挿通溝２４ｉに挿通される連結ピン（図示せず）を介して継ぎ足し用の中空ロッドや、他の掘削ツールを接続可能にしている。 The main body part 24c is formed to have the same diameter as the upper rod 21, and is provided with a joint part 24a at the upper part and a mounting part 24b at the lower part. Further, the extension tube portion 24d includes a female side tube portion as a common connection structure with the female side tube portion (lower end connection portion) 21a of the upper rod 21. In other words, the extension tube portion 24d has the same diameter as the upper rod 21 and has an inner portion. is equipped with a female joint part (not shown), and a hollow rod for addition or other excavation tools can be inserted through a connecting pin (not shown) inserted into a pin insertion groove 24i formed in the joint part. It is possible to connect.

さらに、ジョイント部２４ａと、取付部２４ｂと、本体部２４ｃと、延長筒部２４ｄとには、回転軸方向に貫通する中空部２４ｈが形成されている。中空部２４ｈは、ツール変換治具２４を上部側ロッド２１に連結した際に、上部側ロッド２１に設けられた地盤改良剤の流路（中空部）と連通する。 Further, a hollow portion 24h penetrating in the direction of the rotation axis is formed in the joint portion 24a, the attachment portion 24b, the main body portion 24c, and the extension tube portion 24d. The hollow portion 24h communicates with the flow path (hollow portion) of the ground improvement agent provided in the upper rod 21 when the tool conversion jig 24 is connected to the upper rod 21.

障害物撤去用ツール２５は、円筒状のケーシング２５ａの上部にフレックスカップリング２５ｂが設けられ、下端部に削孔ビット２５ｃが周方向に連続して設けられている。フレックスカップリング２５ｂは、各ボルト挿通孔２４ｆに挿通した取付ボルト２７により取付部２４ｂの下面にボルト締結され、これにより、障害物撤去用ツール２５がツール変換治具２４に取り付けられる。 The obstacle removal tool 25 includes a flex coupling 25b provided at the upper part of a cylindrical casing 25a, and a drilling bit 25c provided continuously in the circumferential direction at the lower end. The flex coupling 25b is bolted to the lower surface of the attachment portion 24b by attachment bolts 27 inserted into the respective bolt insertion holes 24f, whereby the obstacle removal tool 25 is attached to the tool conversion jig 24.

上述のように構成されたツール変換治具２４で、地盤改良用ツール２０から障害物撤去用ツール２５に変換する際には、例えば、地盤改良用ツール２０を下部側ロッド２２と共に上部側ロッド２１から取り外す。ツール変換治具２４のジョイント部２４ａを、上部ロッド２１の雌側筒部２１ａに嵌合させ、連結ピン２６を挿入するなどの所定の手順で上部側ロッド２１に連結させる。次いで、ツール変換治具２４の取付部２４ｂにフレックスカップリング２５ｂを取付ボルト２７でボルト締結することにより、ツール変換治具２４を介して障害物撤去用ツール２５が上部側ロッド２１に連結される。このとき、上部側ロッド２１は、振れ止め部材２３で把持される。これにより、オーガ１７を駆動することによって、障害物撤去用ツール２５に回転トルクや推力が付与され、転石や硬質地盤を撤去することができる。 When converting the ground improvement tool 20 into the obstacle removal tool 25 using the tool conversion jig 24 configured as described above, for example, the ground improvement tool 20 is converted into the lower rod 22 and the upper rod 21. Remove from. The joint portion 24a of the tool conversion jig 24 is fitted into the female cylinder portion 21a of the upper rod 21, and connected to the upper rod 21 by a predetermined procedure such as inserting the connecting pin 26. Next, the obstacle removal tool 25 is connected to the upper rod 21 via the tool conversion jig 24 by bolting the flex coupling 25b to the attachment portion 24b of the tool conversion jig 24 with the installation bolt 27. . At this time, the upper rod 21 is held by the steady rest member 23. Thereby, by driving the auger 17, rotational torque and thrust are applied to the obstacle removal tool 25, and boulders and hard ground can be removed.

このように本形態例では、ツール変換治具２４を用いることにより、簡単な構成で地盤改良用ツール２０から障害物撤去用ツール２５に変換することが可能になり、作業効率の向上を図ることができる。 In this way, in this embodiment, by using the tool conversion jig 24, it becomes possible to convert the ground improvement tool 20 to the obstacle removal tool 25 with a simple configuration, and it is possible to improve work efficiency. Can be done.

また、ツール変換治具２４は、回転軸と同軸に連結されるジョイント部２４ａによって上部側ロッド２１との連結も周知の連結構造（嵌合構造）が採用でき、簡便かつ力（トルク・推力）の伝達も良好なものである。さらに、ジョイント部２４ａ及び取付部２４ｂを一体に結合する本体部２４ｃによって強度を高めることができる。 In addition, the tool conversion jig 24 can be connected to the upper rod 21 using a well-known connection structure (fitting structure) through a joint portion 24a that is coaxially connected to the rotating shaft. The transmission of information is also good. Furthermore, the strength can be increased by the main body portion 24c that integrally connects the joint portion 24a and the attachment portion 24b.

また、取付部２４ｂの上面と本体部２４ｃの外側面とに亘って、ロッド軸周方向に複数設けられる補強部材２４ｇを有しているので、本体部２４ｃと取付部２４ｂとが強固に結合され、障害物撤去用ツール２５に付与する押し付け力を高めることができ、しかも、大径のツールに対応できるといった利点もある。さらに、ジョイント部２４ａと、取付部２４ｂと、本体部２４ｃとに、回転軸方向に貫通する中空部２４ｈが形成されているので、ツール変換治具２４を取り付けた状態のままで中空ロッドを継ぎ足すことが可能となり、加えて、延長筒部２４ｄの構成と相俟って部品共通化も促進されることから、地盤改良機１１の種々の使用態様に適したツール変換治具２４が達成される。 Further, since there is a plurality of reinforcing members 24g provided in the circumferential direction of the rod axis over the upper surface of the mounting portion 24b and the outer surface of the main body portion 24c, the main body portion 24c and the mounting portion 24b are firmly connected. This has the advantage that the pressing force applied to the obstacle removal tool 25 can be increased, and that it can also be used with a large diameter tool. Furthermore, since a hollow portion 24h penetrating in the direction of the rotation axis is formed in the joint portion 24a, the mounting portion 24b, and the main body portion 24c, the hollow rod can be connected while the tool conversion jig 24 is still attached. In addition, together with the configuration of the extension cylinder portion 24d, the commonality of parts is promoted, so that a tool conversion jig 24 suitable for various uses of the soil improvement machine 11 can be achieved. Ru.

なお、本発明は上述の形態例に限るものではなく、ツール変換治具は、延長筒部を備えていなくてもよく、一方、延長筒部を備える場合には本体部と素材から一体的に形成しても差し支えない。また、ジョイント部の形状は、連結される中空ロッドの連結部の形状に応じて適宜形成されればよく、本形態例のように断面正六角形状の雄型に形成されるものに限らない。さらに、地盤改良用ツールや障害物撤去用ツール、ロッドの仕様も任意である。 Note that the present invention is not limited to the above-mentioned embodiments, and the tool conversion jig does not need to include an extension tube. On the other hand, if it is provided with an extension tube, it can be integrally formed from the main body and the material. There is no problem in forming it. Further, the shape of the joint portion may be appropriately formed according to the shape of the connecting portion of the hollow rods to be connected, and is not limited to a male shape having a regular hexagonal cross section as in this embodiment. Furthermore, the specifications of the ground improvement tools, obstacle removal tools, and rods are also optional.

１１…地盤改良機、１２…下部走行体、１３…上部旋回体、１４…ベースマシン、１５…リーダ、１６…リーダ起伏シリンダ、１７…オーガ、１８…中空ロッド、１９ａ…掘削刃、１９ｂ…撹拌翼、２０…地盤改良用ツール、２１…上部側ロッド、２１ａ…雌側筒部、２２…下部側ロッド、２３…振れ止め部材、２４…ツール変換治具、２４ａ…ジョイント部、２４ｂ…取付部、２４ｃ…本体部、２４ｄ…延長筒部、２４ｅ…ピン挿通溝、２４ｆ…ボルト挿通孔、２４ｇ…補強部材、２４ｈ…中空部、２４ｉ…ピン挿通溝、２５…障害物撤去用ツール、２５ａ…ケーシング、２５ｂ…フレックスカップリング、２５ｃ…掘削ビット、２６…連結ピン、２７…取付ボルト DESCRIPTION OF SYMBOLS 11... Ground improvement machine, 12... Lower traveling body, 13... Upper rotating body, 14... Base machine, 15... Leader, 16... Leader undulation cylinder, 17... Auger, 18... Hollow rod, 19a... Excavation blade, 19b... Stirring Wing, 20... Ground improvement tool, 21... Upper rod, 21a... Female cylinder part, 22... Lower rod, 23... Steady rest member, 24... Tool conversion jig, 24a... Joint part, 24b... Mounting part , 24c... Main body part, 24d... Extension cylinder part, 24e... Pin insertion groove, 24f... Bolt insertion hole, 24g... Reinforcement member, 24h... Hollow part, 24i... Pin insertion groove, 25... Obstacle removal tool, 25a... Casing, 25b...Flex coupling, 25c...Drilling bit, 26...Connection pin, 27...Mounting bolt

Claims (4)

地盤改良機の回転駆動装置に装着されるロッドに着脱可能に設けられ、地盤改良作業を行う地盤改良用ツールから障害物撤去作業を行う障害物撤去用ツールに交換することが可能なツール変換治具であって、
前記ツール変換治具は、前記ロッドの下端連結部に回転軸と同軸に連結されるジョイント部と、前記障害物撤去用ツールがボルト締結される取付部と、前記ジョイント部及び前記取付部を一体に結合する本体部とからなり、
前記取付部は、前記障害物撤去用ツールが取り付けられる板面を有する板体からなり、回転軸周方向に複数設けられるボルト挿通孔を有していることを特徴とするツール変換治具。 A tool conversion tool that is removably attached to a rod attached to the rotary drive device of a ground improvement machine and can be exchanged from a ground improvement tool for soil improvement work to an obstacle removal tool for obstacle removal work. A tool,
The tool conversion jig includes a joint part that is coaxially connected to the lower end connecting part of the rod with the rotating shaft, a mounting part to which the obstacle removal tool is bolted, and the joint part and the mounting part are integrated. It consists of a main body that connects to the
The tool conversion jig is characterized in that the attachment part is made of a plate having a plate surface to which the obstacle removal tool is attached, and has a plurality of bolt insertion holes provided in the circumferential direction of the rotation axis. 前記障害物撤去用ツールが取り付けられる板面の反対側の板面と前記本体部の外側面とに亘って、回転軸周方向に複数設けられる補強部材を有していることを特徴とする請求項１記載のツール変換治具。 A claim characterized in that a plurality of reinforcing members are provided in the circumferential direction of the rotating shaft, spanning the plate surface opposite to the plate surface to which the obstacle removal tool is attached and the outer surface of the main body. The tool conversion jig described in Item 1. 前記ジョイント部及び前記本体部は、回転軸方向に貫通する中空部が形成されていることを特徴とする請求項１又は２記載のツール変換治具。 3. The tool conversion jig according to claim 1, wherein the joint part and the main body part have a hollow part formed therethrough in a rotation axis direction. 前記本体部の下部には、前記ロッドの下端連結部と共通する連結構造を備えた延長筒部が設けられていることを特徴とする請求項１又は２記載のツール変換治具。 3. The tool conversion jig according to claim 1, wherein the lower part of the main body part is provided with an extension tube part having a common connection structure with the lower end connection part of the rod.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7563816B1 (en) 2024-05-20 2024-10-08 株式会社シロタ Locking mechanism for auger device, excavation device, and attachment replacement method for excavation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7563816B1 (en) 2024-05-20 2024-10-08 株式会社シロタ Locking mechanism for auger device, excavation device, and attachment replacement method for excavation device

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