A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To propose a pulling device for existing piles, which has high workability and work efficiency in pulling out existing piles and is excellent in work reliability.SOLUTION: The present invention comprises a casing 1 provided with a latching pawl 31 that can be extended inwardly, while a connecting rod 21 connected to a hydraulic cylinder 21 on an outer peripheral side of the casing 1 is arranged, the latching pawl 31 is pivotally supported on a pivot shaft 32 connected to a lower end of the rod 21 while being engaged with the guide slot 35, and guide portions 31a and 31b that engage with a cam body 33 are provided. When the rod 21 descends, the latching pawl 31 is configured such that the guide portions 31a and 31b are engaged with the cam body 33 and tilted around the pivot shaft 32 so that a tip end side projects toward an inner space 16 side of the casing 1. According to such a configuration, an engaged state with respect to an existing pile 4 becomes stable and reliable, and as a result, reliability in a pulling out operation of the existing pile 4 is improved.SELECTED DRAWING: Figure 2
【課題】、既設杭の引抜作業における作業性及び作業効率が高く且つ作業上の信頼性に優れた既設杭の引抜装置を提案する。【解決手段】内方へ張出可能な掛止爪３１を設けたケーシング１を備え、ケーシング１の外周側に油圧シリンダ２１に連結された連結ロッド２１を配置する一方、掛止爪３１を、ガイド長穴３５に係入された状態でロッド２１の下端に連結された枢支軸３２に枢支するとともに、カム体３３と係合するガイド部３１ａ，３１ｂを設け、ロッド２１が降下するとき、掛止爪３１はそのガイド部３１ａ，３１ｂがカム体３３と係合することで枢支軸３２周りに傾動されてその先端側がケーシング１の内部空間１６側へ張出すように構成する。係る構成によれば、既設杭４に対する掛止状態が安定且つ確実となり、延いては既設杭４の引抜作業における信頼性が向上する。【選択図】図２
To propose a pulling device for existing piles, which has high workability and work efficiency in pulling out existing piles and is excellent in work reliability.SOLUTION: The present invention comprises a casing 1 provided with a latching pawl 31 that can be extended inwardly, while a connecting rod 21 connected to a hydraulic cylinder 21 on an outer peripheral side of the casing 1 is arranged, the latching pawl 31 is pivotally supported on a pivot shaft 32 connected to a lower end of the rod 21 while being engaged with the guide slot 35, and guide portions 31a and 31b that engage with a cam body 33 are provided. When the rod 21 descends, the latching pawl 31 is configured such that the guide portions 31a and 31b are engaged with the cam body 33 and tilted around the pivot shaft 32 so that a tip end side projects toward an inner space 16 side of the casing 1. According to such a configuration, an engaged state with respect to an existing pile 4 becomes stable and reliable, and as a result, reliability in a pulling out operation of the existing pile 4 is improved.SELECTED DRAWING: Figure 2
【課題】、既設杭の引抜作業における作業性及び作業効率が高く且つ作業上の信頼性に優れた既設杭の引抜装置を提案する。【解決手段】内方へ張出可能な掛止爪３１を設けたケーシング１を備え、ケーシング１の外周側に油圧シリンダ２１に連結された連結ロッド２１を配置する一方、掛止爪３１を、ガイド長穴３５に係入された状態でロッド２１の下端に連結された枢支軸３２に枢支するとともに、カム体３３と係合するガイド部３１ａ，３１ｂを設け、ロッド２１が降下するとき、掛止爪３１はそのガイド部３１ａ，３１ｂがカム体３３と係合することで枢支軸３２周りに傾動されてその先端側がケーシング１の内部空間１６側へ張出すように構成する。係る構成によれば、既設杭４に対する掛止状態が安定且つ確実となり、延いては既設杭４の引抜作業における信頼性が向上する。【選択図】図２
PULLING DEVICE FOR EXISTING PILE
既設杭の引抜装置
BANDAI ATSUMI (author)
2019-11-07
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2022