JPH0526148Y2 - - Google Patents
Info
- Publication number
- JPH0526148Y2 JPH0526148Y2 JP1987013960U JP1396087U JPH0526148Y2 JP H0526148 Y2 JPH0526148 Y2 JP H0526148Y2 JP 1987013960 U JP1987013960 U JP 1987013960U JP 1396087 U JP1396087 U JP 1396087U JP H0526148 Y2 JPH0526148 Y2 JP H0526148Y2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- drive device
- chuck
- engages
- square shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、場所打杭等に用いられる穿孔機や地
盤改良機等の土木機械に用いられるロツド回転推
進構造に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rod rotation propulsion structure used in civil engineering machines such as drilling machines and ground improvement machines used for driving-in-place piles.
従来の場所打杭用の穿孔機等のロツド回転推進
構造には、ベースマシンの前方に立設したリーダ
に沿つて昇降可能に設けられたロツド駆動装置の
回転駆動機構に挿通した断面が円形のロツドをチ
ヤツク機構で掴持し、該ロツドを回転しながら推
進する方式のものと、断面形状が全長に亘つて多
角形形状のロツドを駆動装置の回転駆動機構に挿
通して、該ロツドを回転しなら推進する方式のも
のとがある。
Conventional rod rotary propulsion structures such as drilling machines for cast-in-place piles have a circular cross section that is inserted into the rotary drive mechanism of a rod drive device that is movable up and down along a leader installed in front of the base machine. The rod is held by a chuck mechanism and is propelled while rotating, while the rod is rotated by inserting a rod with a polygonal cross-section over its entire length into the rotational drive mechanism of the drive device. There is also a method that promotes shinara.
しかしながら、上述の断面が円形のロツドを用
いたロツド回転推進構造では、チヤツク機構の握
持力により回転力と推進力を伝達するために、作
業中にスリツプすることがある。
However, in the above-mentioned rod rotational propulsion structure using a rod with a circular cross section, the rod may slip during operation because rotational force and propulsive force are transmitted by the gripping force of the chuck mechanism.
また、多角形形状のロツドを用いたロツド回転
推進構造では、押込み推進力をロツド及びロツド
に設けた掘削具の自重に頼るため、押込み推進力
が不足したりする等、土質に合つた押込み推進力
の調整が困難であり、別に油圧シリンダ等による
推進機構を設ける必要があり、構造が複雑で装置
が高価になる。 In addition, in a rod rotation propulsion structure using polygonal rods, the pushing propulsion force relies on the weight of the rod and the excavation tool attached to the rod, so the pushing propulsion force may be insufficient, etc. It is difficult to adjust the force, and a propulsion mechanism such as a hydraulic cylinder must be provided separately, making the structure complicated and the device expensive.
そこで本考案は、スリツプすること無く回転力
をロツドに確実に伝達し、必要な押込み推進力を
得られるロツド回転推進構造を提供することを目
的とする。 Therefore, an object of the present invention is to provide a rod rotation propulsion structure that can reliably transmit rotational force to the rod without slipping and obtain the necessary pushing thrust force.
上記の目的を達成するために、本考案は、ベー
スマシンの前方に立設したリーダに沿つて昇降可
能にロツド駆動装置を設け、該ロツド駆動装置に
挿通されるロツドを回転させながら推進させるロ
ツド回転推進構造において、前記ロツドに、断面
多角形形状の角軸部と断面円形の溝部とを形成す
ると共に、前記ロツド駆動装置に、ロツドの前記
角軸部を挿通係合する回転駆動機構とロツドの前
記溝部に係合するチヤツク機構とを設けたことを
特徴としている。
In order to achieve the above object, the present invention provides a rod drive device that is movable up and down along a leader installed in front of a base machine, and a rod drive device that rotates and propels the rod inserted through the rod drive device. In the rotary propulsion structure, the rod is formed with a rectangular shaft portion having a polygonal cross section and a groove portion having a circular cross section, and a rotary drive mechanism for inserting and engaging the rectangular shaft portion of the rod in the rod driving device; The invention is characterized in that it is provided with a chuck mechanism that engages with the groove portion.
したがつて、ロツドの多角形形状の角軸部を挿
通係合する回転駆動機構でスリツプすること無く
回転力をロツドに伝達し、ロツドの断面円形の溝
部に係合するチヤツク機構が、該溝部の上向面を
押圧することにより、必要な押込み推進力が得ら
れる。
Therefore, the rotational drive mechanism that inserts and engages the polygonal square shaft of the rod transmits the rotational force to the rod without slipping, and the chuck mechanism that engages with the groove of the rod that has a circular cross section, By pressing the upward surface of the holder, the necessary pushing force can be obtained.
以下、本考案を穿孔機に適用した一実施例を図
面に基づいて説明する。
An embodiment in which the present invention is applied to a drilling machine will be described below with reference to the drawings.
穿孔機１は、ベースマシン２の前部に設けたサ
ポート３にリーダ４を立設し、バツクステー５に
てリーダ４を支持している。リーダ４の下部に
は、下端部にビツト６が取付けられたロツド７を
支持する下部ガイド８が設けられ、リーダ４の上
部には、ロツド駆動装置９がリーダ４に沿つて昇
降可能に設けられている。 In the drilling machine 1, a leader 4 is installed upright on a support 3 provided at the front of a base machine 2, and the leader 4 is supported by a backstay 5. A lower guide 8 is provided at the bottom of the leader 4 to support a rod 7 having a bit 6 attached to its lower end, and a rod driving device 9 is provided at the top of the leader 4 so as to be movable up and down along the leader 4. ing.
前記ロツド７の上部側には、断面六角形の角軸
部１０が設けられ、該角軸部１０の下部に断面円
形の溝部１１が形成されている。 A square shaft part 10 having a hexagonal cross section is provided on the upper side of the rod 7, and a groove part 11 having a circular cross section is formed in the lower part of the square shaft part 10.
前記ロツド駆動装置９は、前記ロツド７の角軸
部１０を挿通係合する六角形の貫通孔１２を形成
したロツド７の回転駆動機構１３と、前記ロツド
７の溝部１１に係合するチヤツク機構１４とで構
成されている。 The rod drive device 9 includes a rotary drive mechanism 13 for the rod 7 having a hexagonal through hole 12 through which the square shaft 10 of the rod 7 is inserted and engaged, and a chuck mechanism that engages with the groove 11 of the rod 7. It consists of 14.
回転駆動機構１３は、ベアリング１５にてロツ
ド駆動装置９の枠体９ａに回転可能に支持されて
おり、従来と同様の構造を備えた回転機構（図示
せず）により回転し、ロツド７に回転力を伝達す
る。 The rotational drive mechanism 13 is rotatably supported by the frame 9a of the rod drive device 9 through a bearing 15, and is rotated by a rotation mechanism (not shown) having the same structure as the conventional one, and is rotated by the rod 7. transmit power.
前記チヤツク機構１４は、中央部に前記ロツド
７を挿通する円孔１６を形成された偏平な角パイ
プ状の支持プレート１７内に、前記ロツド７の溝
部１１に対応する半円形の切欠からなる握持部１
８が形成された一対のチヤツク板１９，１９を摺
動可能に対向配置しており、支持プレート１７に
固着されたブラケツト２０によりロツド駆動装置
９の枠体９ａの下部に固着されている。 The chuck mechanism 14 has a grip formed by a semicircular notch corresponding to the groove 11 of the rod 7 in a flat square pipe-shaped support plate 17 having a circular hole 16 formed in the center thereof through which the rod 7 is inserted. Holding part 1
A pair of chuck plates 19, 19 having numbers 8 formed thereon are slidably arranged opposite to each other, and are fixed to the lower part of the frame 9a of the rod drive device 9 by a bracket 20 fixed to the support plate 17.
前記チヤツク板１９は、両側部に穿設された長
孔２１，２１に、支持プレート１７に挿通された
案内ピン２２，２２が貫通し、この長孔２１，２
１と案内ピン２２，２２との案内により支持プレ
ート１７内を摺動し、握持部１８を開閉可能とし
ている。 Guide pins 22, 22 inserted through the support plate 17 pass through long holes 21, 21 bored on both sides of the chuck plate 19.
1 and the guide pins 22, 22, it slides within the support plate 17, and the grip portion 18 can be opened and closed.
また、両チヤツク板１９の外端部には、作動板
２３が外端部を挟んで固着され、両チヤツク板１
９の作動板２３の両端部には、ピン２４，２４が
挿着され、両チヤツク板１９，１９の作動板２
３，２３のピン２４，２４間には、チヤツク板１
９，１９ を閉じ方向に付勢するスプリング２５
と、開き方向に押動する油圧シリンダ２６とが懸
架されている。 Further, an actuating plate 23 is fixed to the outer ends of both chuck plates 19 with the outer ends sandwiched therebetween.
Pins 24, 24 are inserted into both ends of the actuating plate 23 of 9, and the actuating plates 2 of both chuck plates 19, 19
Between the pins 24 and 24 of 3 and 23, the chuck plate 1
Spring 25 that biases 9, 19 in the closing direction
and a hydraulic cylinder 26 that pushes in the opening direction are suspended.
このように形成されたロツド駆動装置９は、油
圧シリンダ２６を付勢して両チヤツク板１９，１
９の作動板２３，２３を第３図の想像線の位置に
押動し、握持部１８を開き状態としてロツド７を
挿入し、ロツド７の角軸部１０を回転駆動機構１
３の貫通孔１２と係合させた後に、油圧シリンダ
２６を減圧してスプリング２５により握持部１８
を閉じ状態として、前記溝部１１を握持部１８で
掴持する。 The rod drive device 9 formed in this manner biases the hydraulic cylinder 26 to drive both chuck plates 19,1.
Push the actuating plates 23, 23 of 9 to the position shown by the imaginary line in FIG.
After engaging with the through hole 12 of No. 3, the hydraulic cylinder 26 is depressurized and the grip portion 18 is moved by the spring 25.
The groove portion 11 is held in the closed state by the grip portion 18.
これにより、回転力を大きくしても回転駆動機
構１３の貫通孔１２とロツド７の角軸部１０がス
リツプすること無く回転力をロツド７に伝達し、
ロツド駆動装置９をリーダ４に沿つて下方に移動
させることにより、チヤツク板１９の下面１９ａ
が溝部１１の上向面１１ａを押圧して必要な押込
み推進力をロツド７に伝達する。 As a result, even if the rotational force is increased, the rotational force is transmitted to the rod 7 without slipping between the through hole 12 of the rotary drive mechanism 13 and the square shaft portion 10 of the rod 7.
By moving the rod drive device 9 downward along the leader 4, the lower surface 19a of the chuck plate 19 is
presses the upward surface 11a of the groove 11 and transmits the necessary pushing force to the rod 7.
また、ロツド駆動装置９をリーダ４に沿つて上
方に移動させることにより、チヤツク板１９の上
面１９ｂが溝部１１の下向面１１ｂを押圧して必
要な引抜き推進力をロツド７に伝達する。 Further, by moving the rod drive device 9 upward along the leader 4, the upper surface 19b of the chuck plate 19 presses the downward surface 11b of the groove 11, thereby transmitting the necessary pulling force to the rod 7.
尚、角軸部と溝部は、ロツドに連結されるアダ
プターに形成することもでき、チヤツク部の開閉
は油圧シリンダのみで行うこともできる。 Incidentally, the square shaft portion and the groove portion may be formed in an adapter connected to the rod, and the chuck portion may be opened and closed using only a hydraulic cylinder.
また、本実施例では、穿孔機に適用させている
が、本考案は、同様の構造を用いる地盤改良機等
の土木機械にも用いることができる。 Further, in this embodiment, the present invention is applied to a drilling machine, but the present invention can also be applied to civil engineering machines such as ground improvement machines that use a similar structure.
本考案のロツド回転推進構造は、以上説明した
ように、ロツドに、断面多角形形状の角軸部と断
面円形の溝部とを形成すると共に、ベースマシン
の前方に立設したリーダに沿つて昇降可能に設け
たロツド駆動装置に、ロツドの前記角軸部を挿通
係合する回転駆動機構とロツドの前記溝部に係合
するチヤツク機構とを設けたので、回転駆動機構
の回転力を、回転駆動機構に係合するロツドの角
軸部を介してロツドに確実に伝達できると共に、
ロツドの溝部に係合するチヤツク機構にて、該溝
部の上向面を押圧することにより、必要な押込み
推進力をロツドに確実に伝達できる。
As explained above, the rod rotational propulsion structure of the present invention has a rectangular shaft portion with a polygonal cross section and a groove portion with a circular cross section formed on the rod, and the rod is moved up and down along the leader installed upright in front of the base machine. Since the rod drive device is provided with a rotary drive mechanism that inserts and engages the square shaft portion of the rod and a chuck mechanism that engages with the groove portion of the rod, the rotational force of the rotary drive mechanism is transferred to the rotary drive mechanism. It can be reliably transmitted to the rod via the square shaft of the rod that engages with the mechanism, and
By pressing the upward surface of the groove with a chuck mechanism that engages with the groove of the rod, the necessary pushing force can be reliably transmitted to the rod.
図は本考案の一実施例を示し、第１図は穿孔機
の正面図、第２図は要部の半断面正面図、第３図
は同底面図、第４図は第３図の−断面図であ
る。
１……穿孔機、４……リーダ、７……ロツド、
９……ロツド駆動装置、１０……角軸部、１１…
…溝部、１１ａ……上向面、１１ｂ……下向面、
１２……貫通孔、１３……回転駆動機構、１４…
…チヤツク機構、１８……握持部、１９……チヤ
ツク板、２５……スプリング、２６……油圧シリ
ンダ。
The figures show one embodiment of the present invention, in which Fig. 1 is a front view of the drilling machine, Fig. 2 is a half-sectional front view of the main part, Fig. 3 is a bottom view of the same, and Fig. 4 is the same as that shown in Fig. 3. FIG. 1...Drilling machine, 4...Leader, 7...Rod,
9... Rod drive device, 10... Square shaft portion, 11...
...groove, 11a...upward surface, 11b...downward surface,
12... Through hole, 13... Rotation drive mechanism, 14...
...Chuck mechanism, 18...Gripping portion, 19...Chuck plate, 25...Spring, 26...Hydraulic cylinder.
Claims (1)
昇降可能にロツド駆動装置を設け、該ロツド駆動
装置に挿通されるロツドを回転させながら推進さ
せるロツド回転推進構造において、前記ロツド
に、断面多角形形状の角軸部と断面円形の溝部と
を形成すると共に、前記ロツド駆動装置に、ロツ
ドの前記角軸部を挿通係合する回転駆動機構とロ
ツドの前記溝部に係合するチヤツク機構とを設け
たことを特徴とするロツド回転推進構造。 In a rod rotation propulsion structure in which a rod drive device is provided so as to be movable up and down along a leader installed in front of the base machine, and the rod inserted through the rod drive device is rotated and propelled, the rod has a polygonal cross-sectional shape. A square shaft portion and a groove portion having a circular cross section are formed, and the rod drive device is provided with a rotational drive mechanism that inserts and engages the square shaft portion of the rod and a chuck mechanism that engages with the groove portion of the rod. A rod rotary propulsion structure characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987013960U JPH0526148Y2 (en) | 1987-02-02 | 1987-02-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987013960U JPH0526148Y2 (en) | 1987-02-02 | 1987-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63121691U JPS63121691U (en) | 1988-08-08 |
| JPH0526148Y2 true JPH0526148Y2 (en) | 1993-07-01 |
Family
ID=30803508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987013960U Expired - Lifetime JPH0526148Y2 (en) | 1987-02-02 | 1987-02-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526148Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015172324A (en) * | 2014-02-20 | 2015-10-01 | 日本車輌製造株式会社 | Rod rotary driving device and ground improvement machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6282151B2 (en) * | 2014-03-20 | 2018-02-21 | 日本車輌製造株式会社 | Ground improvement machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51128803A (en) * | 1975-05-02 | 1976-11-10 | Furukawa Kogyo Kk | Drilling machine suitable for drilling hole in weak ground |
| JPS56163391A (en) * | 1980-05-20 | 1981-12-15 | Toho Chika Kouki Kk | Rotary propelling apparatus |
-
1987
- 1987-02-02 JP JP1987013960U patent/JPH0526148Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51128803A (en) * | 1975-05-02 | 1976-11-10 | Furukawa Kogyo Kk | Drilling machine suitable for drilling hole in weak ground |
| JPS56163391A (en) * | 1980-05-20 | 1981-12-15 | Toho Chika Kouki Kk | Rotary propelling apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015172324A (en) * | 2014-02-20 | 2015-10-01 | 日本車輌製造株式会社 | Rod rotary driving device and ground improvement machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63121691U (en) | 1988-08-08 |
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