JPS6129800Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は杭打機のリーダ下部支持装置に関する
ものである。[Detailed Description of the Invention] The present invention relates to a leader lower support device for a pile driver.

杭打機のリーダはベースマシンに支持されてい
るが、組立、作業、運搬の都合上前後方向に回動
可能に支持されるとともに地盤の傾斜等に対応す
るため左右方向にも一定量回動可能に支持する必
要がある。 The leader of the pile driver is supported by the base machine, but for the convenience of assembly, work, and transportation, it is supported so that it can rotate in the front and back directions, and it can also rotate a certain amount in the left and right directions to accommodate ground inclinations, etc. It needs to be supported as much as possible.

このため従来一般には第１図乃至第４図に示す
如く、ベースマシン１に立設されるリーダ２は二
本のバツクステー３の油圧シリンダ４の伸縮によ
つて前後及び左右の傾きを調整される。 For this reason, conventionally, as shown in FIGS. 1 to 4, the inclination of the leader 2 erected on the base machine 1 is adjusted by extending and contracting the hydraulic cylinders 4 of the two backstays 3. .

したがつてリーダ２の下部２ａに上下方向の長
孔５を貫通形成し、ベースマシン１から延出した
二乂状のリーダ支持体６，６の孔７，７にピン８
を挿通してリーダ２の傾斜に対応している。しか
し左右の傾斜を調節してリーダ２を立設した時は
第４図に示す如く下部リーダ２ａはピン８の一方
のみで接しており、かつ傾斜させるためには隙間
ｃが必要となり、不安定であるとともにリーダが
片寄つた位置に移動することとなる。 Therefore, a long hole 5 in the vertical direction is formed through the lower part 2a of the leader 2, and a pin 8 is inserted into the holes 7, 7 of the bifurcated leader supports 6, 6 extending from the base machine 1.
is inserted to accommodate the inclination of the leader 2. However, when the left and right inclinations are adjusted and the leader 2 is set upright, the lower leader 2a is in contact with only one side of the pin 8 as shown in FIG. 4, and a gap c is required to tilt it, making it unstable. At the same time, the leader moves to a lopsided position.

そこで本考案は上記の欠点を改良したもので、
軸線方向に直角なピン孔を中央部に貫通形成する
とともに両端から軸線方向のピン穴を夫々形成し
たトラニオン部材を、リーダ下部に突設したトラ
ニオン支持部に嵌挿し、該トラニオン支持部に形
成されたピン孔に貫通するピンを前記トラニオン
部材のピン孔に軸支してリーダを左右方向に回動
可能に支持し、ベースマシンに設けたリーダ支持
体に形成したピン孔に貫通するピンを夫々トラニ
オン部材の両端に形成したピン穴に軸支してリー
ダを前後方向に回動可能に支持したことを特徴と
し、その目的とするところは構造簡単で操作確実
なリーダ下部支持装置を提供するものである。以
下図示の実施例について説明する。 Therefore, this invention improves the above drawbacks,
A trunnion member having a pin hole perpendicular to the axial direction formed through the center part and axial pin holes formed at both ends is inserted into a trunnion support part protruding from the lower part of the leader, and the trunnion member formed in the trunnion support part is inserted. A pin passing through the pin hole formed in the base machine is pivotally supported in the pin hole of the trunnion member to support the leader so as to be rotatable in the left and right direction, and each pin passing through the pin hole formed in the leader support provided on the base machine is supported rotatably in the left and right direction. The leader is rotatably supported in the front and back direction by being pivotally supported in pin holes formed at both ends of the trunnion member, and its purpose is to provide a leader lower support device with a simple structure and reliable operation. It is. The illustrated embodiment will be described below.

先ず第５図に示す一実施例について説明する
と、トラニオン部９は軸線方向に直角なピン孔１
０を中央部に貫通形成するとともに両端から軸線
方向のピン穴１１ａ，１１ｂを夫々形成する。 First, an embodiment shown in FIG. 5 will be described. The trunnion portion 9 has a pin hole 1 perpendicular to the axial direction.
0 is formed through the center portion, and axial pin holes 11a and 11b are formed from both ends, respectively.

下部リーダ２ａの後部にはトラニオン支持部１
２が突設されており、該支持部１２に下部リーダ
２ａの中心線に向うピン孔１３と該ピン孔１３を
横切る水平方向のトラニオン挿通孔１４が形成さ
れている。 A trunnion support portion 1 is provided at the rear of the lower leader 2a.
A pin hole 13 extending toward the center line of the lower leader 2a and a trunnion insertion hole 14 extending horizontally across the pin hole 13 are formed in the support portion 12.

トラニオン部材９は該挿通孔１４に嵌挿され、
ピン１５をトラニオン支持部１２のピン孔１３か
らトラニオン部材９のピン孔１０に貫通せしめ、
止めネジ１６でピン１５を固定し、下部リーダ２
ａを左右に回動可に支持する。 The trunnion member 9 is inserted into the insertion hole 14,
Passing the pin 15 from the pin hole 13 of the trunnion support part 12 to the pin hole 10 of the trunnion member 9,
Fix the pin 15 with the set screw 16, and attach the lower leader 2.
A is supported rotatably left and right.

ベースマシン１に一体に設けられた二乂状のリ
ーダ支持部体１７ａ，１７ｂにはピン孔１８ａ，
１８ｂが貫通形成され、該孔１８ａ，１８ｂに挿
通したピン１９ａ，１９ｂをトラニオン部材９の
両端のピン孔１１ａ，１１ｂに挿入し、該ピン１
９ａ，１９ｂを止ピン２０ａ，２０ｂで固定し、
リーダ下部２ａを前後方向に回動可能に支持す
る。したがつてリーダを左右に傾斜した場合でも
トラニオン部材９とリーダ支持体１７ａ，１７ｂ
との間に遊隙を設ける必要がないから従来の如き
隙間が生じない。 Pin holes 18a,
The pins 19a and 19b inserted into the holes 18a and 18b are inserted into the pin holes 11a and 11b at both ends of the trunnion member 9.
Fix 9a and 19b with stop pins 20a and 20b,
The lower part of the leader 2a is rotatably supported in the front-back direction. Therefore, even when the leader is tilted from side to side, the trunnion member 9 and the leader supports 17a, 17b
Since there is no need to provide a clearance between the two, there is no clearance as in the conventional case.

次に第６図，第７図に示すような杭打機はベー
スマシン１のブラケツト１ａに回動可能に設けら
れたブラケツト支持体２１にてリーダ２を立設す
るものであり、第７図に示す如く該リーダ２を格
納する場合にはリーダ２の前後方向の回動角が大
きいためバツクステー３の油圧シリンダー４の縮
小のみでは対応できないから、油圧シリンダ４で
リーダ２を一定角度後傾させた後はサブステー２
２の頂部２３とリーダ２の中間部に設けられたブ
ラケツト２ｂとを連結し、バツクステー３とリー
ダ２の連結を解除してサブステー２２の油圧シリ
ンダ２４を縮小させて行なうものである。このた
めサブステー２２の下端はリーダ２の回転に無関
係にブラケツト支持体２１と同軸で下部リーダ２
ａに枢着されている。 Next, the pile driver shown in FIGS. 6 and 7 has a leader 2 erected by a bracket support 21 rotatably provided on a bracket 1a of a base machine 1. As shown in the figure, when storing the leader 2, since the rotation angle of the leader 2 in the front and back direction is large, it is not possible to deal with it only by reducing the hydraulic cylinder 4 of the back stay 3. Therefore, the leader 2 is tilted backward by a certain angle using the hydraulic cylinder 4. After that, substay 2
The top part 23 of the sub-stay 2 and the bracket 2b provided at the intermediate part of the leader 2 are connected, the back stay 3 and the leader 2 are disconnected, and the hydraulic cylinder 24 of the sub-stay 22 is contracted. Therefore, the lower end of the substay 22 is coaxial with the bracket support 21 and is attached to the lower leader 2 regardless of the rotation of the leader 2.
It is pivoted to a.

したがつてこのような杭打機において本考案を
適用する場合は第８図に示すように両側に位置さ
れるブラケツト支持体２１ａ，２１ｂとトラニオ
ン部材９との間に二乂状に形成されるサブステー
２２の下端２２ａ，２２ｂを挾み、ピン１９ａ，
１９ｂをブラケツト支持体２１ａ，２１ｂのピン
孔２５ａ，２５ｂ及びサブステー２２の下端２２
ａ，２２ｂのピン孔２６ａ，２６ｂに貫通させて
トラニオン部材９のピン穴１１ａ，１１ｂに挿入
してリーダ２を前記実施例と同様に支持する。 Therefore, when the present invention is applied to such a pile driver, as shown in FIG. 8, the lower ends 22a, 22b of the sub-stay 22 formed in two-sided shape between the bracket supports 21a, 21b located on both sides and the trunnion member 9 are sandwiched, and the pins 19a,
19b through the pin holes 25a, 25b of the bracket supports 21a, 21b and the lower end 22 of the sub-stay 22.
The pins 26a, 26b of the trunnion member 9 are inserted through the pin holes 11a, 11b of the trunnion member 9 to support the leader 2 in the same manner as in the previous embodiment.

本考案は以上の通りトラニオン部材を介してピ
ンでリーダを左右及び前後方向に回動できるよう
に支持したから、リーダの回動が確実であつてし
かもリーダを傾倒させてもリーダとリーダ支持体
との間に従来は間隙が必要であつたが、本考案は
その必要がないからリーダ支持点が移動しないで
すみリーダの支持が確実に行える等の効果を有す
る考案である。 As described above, in the present invention, since the leader is supported so as to be rotatable in the left-right and front-back directions with the pin via the trunnion member, the reader can be rotated reliably, and even when the leader is tilted, the leader and the leader support are still connected to each other. Conventionally, a gap was required between the two, but the present invention does not require such a gap, so the leader support point does not move and the leader can be supported reliably.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図乃至第４図は従来の杭打機のリーダ下部
支持装置の一例を示すもので、第１図は杭打機の
全体正面図、第２図は要部の正面図、第３図は第
２図の断面平面図、第４図は第２図の断面側面
図、第５図は本考案装置の一実施例を示す断面平
面図、第６図乃至第８図は本考案を別の杭打機に
利用した場合を示すもので、第６図は杭打機の全
体正面図、第７図はリーダを格納した状態を示す
全体正面図、第８図は要部の断面平面図である。 １はベースマシン、２はリーダ、２ａは下部リ
ーダ、９はトラニオン部材、１０はピン孔、１１
ａ，１１ｂはピン穴、１２はトラニオン支持部、
１３はピン孔、１４はトラニオン挿通孔、１５は
ピン、１７ａ，１７ｂ，２１ａ，２１ｂはリーダ
支持体である。 Figures 1 to 4 show an example of a conventional lower support device for the leader of a pile driver. Figure 1 is an overall front view of the pile driver, Figure 2 is a front view of main parts, and Figure 3 is a front view of the main parts. is a cross-sectional plan view of FIG. 2, FIG. 4 is a cross-sectional side view of FIG. 2, FIG. 5 is a cross-sectional plan view showing one embodiment of the device of the present invention, and FIGS. Fig. 6 is an overall front view of the pile driver, Fig. 7 is an overall front view showing the reader in a retracted state, and Fig. 8 is a sectional plan view of the main parts. It is. 1 is a base machine, 2 is a leader, 2a is a lower leader, 9 is a trunnion member, 10 is a pin hole, 11
a, 11b are pin holes, 12 is a trunnion support part,
13 is a pin hole, 14 is a trunnion insertion hole, 15 is a pin, and 17a, 17b, 21a, and 21b are leader supports.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 軸線方向に直角なピン孔を中央部に貫通形成す
るとともに両端から軸線方向のピン穴を夫々形成
したトラニオン部材を、リーダ下部に突設したト
ラニオン支持部に嵌挿し、該トラニオン支持部に
形成されたピン孔に貫通するピンを前記トラニオ
ン部材のピン孔に軸支してリーダを左右方向に回
動可能に支持し、ベースマシンに設けたリーダ支
持体に形成したピン孔に貫通するピンを夫々トラ
ニオン部材の両端に形成したピン穴に軸支してリ
ーダを前後方向に回動可能に支持したことを特徴
とする杭打機のリーダ下部支持装置。 A trunnion member having a pin hole perpendicular to the axial direction formed through the center part and axial pin holes formed at both ends is inserted into a trunnion support part protruding from the lower part of the leader, and the trunnion member formed in the trunnion support part is inserted. A pin passing through the pin hole formed in the base machine is pivotally supported in the pin hole of the trunnion member to support the leader so as to be rotatable in the left and right direction, and each pin passing through the pin hole formed in the leader support provided on the base machine is supported rotatably in the left and right direction. 1. A leader lower support device for a pile driver, characterized in that the leader is pivotally supported in pin holes formed at both ends of a trunnion member so as to be rotatable in the front-back direction.