JPS64697U

JPS64697U -

Info

Publication number: JPS64697U
Application number: JP9201687U
Authority: JP
Priority date: 1987-06-17
Filing date: 1987-06-17
Publication date: 1989-01-05

Description

[Brief explanation of the drawing]

第１図は、本考案の断面及び立面全体図、第２
図は、断面及び平面全体図、第３図は、底ざらい
ぶた、第４図は、中軸６、外軸７部断面図、第５
図は、クラツチ９，１０部断面図、第６図は、ク
ラツチ８部断面図、第７図は、クラツチ１１、カ
ム２１部断面図、第８図は、レバー１９、アーム
１７平面及び断面図。１は本体、２はアースドリル掘削回転軸、３は
掘削刃先、４は安定機、５は底ぶた、６は中軸、
７は外軸、８はクラツチ１、９はクラツチ２、１
０はクラツチ３、１１はクラツチ４、１２は大歯
車、１３は小歯車１、１４は小歯車２、１５はア
ーム１、１６はアーム２、１７はアーム３、１８
はレバー１、１９はレバー２、２０はレバー３、
２１はカム、２２は爪１、２３は爪２、２４は内
歯歯車、２５はラツク、２６は底盤、２７はアー
ム台、２８はバネ１、２９はバネ２、３０はバネ
３、３１はバネ４、３２はバネ５、３３は磁石、
３４は玉軸受１、３５は玉軸受２、３６は玉軸受
３、３７は玉軸受４。 Figure 1 is an overall cross-sectional and elevational view of the present invention;
The figure is a cross-sectional and overall plan view, Figure 3 is a bottom rough lid, Figure 4 is a sectional view of the center shaft 6 and outer shaft 7, and Figure 5 is a cross-sectional view of the center shaft 6 and outer shaft 7.
6 is a sectional view of clutch 8, FIG. 7 is a sectional view of clutch 11 and cam 21, and FIG. 8 is a plan view and sectional view of lever 19 and arm 17. . 1 is the main body, 2 is the earth drill drilling rotation shaft, 3 is the cutting edge, 4 is the stabilizer, 5 is the bottom cover, 6 is the center shaft,
7 is the outer shaft, 8 is clutch 1, 9 is clutch 2, 1
0 is clutch 3, 11 is clutch 4, 12 is large gear, 13 is small gear 1, 14 is small gear 2, 15 is arm 1, 16 is arm 2, 17 is arm 3, 18
is lever 1, 19 is lever 2, 20 is lever 3,
21 is a cam, 22 is a pawl 1, 23 is a pawl 2, 24 is an internal gear, 25 is a rack, 26 is a bottom plate, 27 is an arm stand, 28 is a spring 1, 29 is a spring 2, 30 is a spring 3, and 31 is a Spring 4, 32 is spring 5, 33 is magnet,
34 is a ball bearing 1, 35 is a ball bearing 2, 36 is a ball bearing 3, and 37 is a ball bearing 4.

Claims

[Scope of Claim for Utility Model Registration] (a) The bottom of the cast-in-place pile is expanded to increase the cross-sectional area of the bottom of the pile, thereby increasing the bearing capacity of the pile. (b) The method of use is to first complete excavation to the specified support layer using the earth drill method's excavation bucket, and then use this bottom-expanding drilling equipment to perform bottom-expanding excavation.