Title:
杭打装置
Document Type and Number:
Japanese Patent JP6967783
Kind Code:
B2
Abstract:
To provide a pile driving device that can stably supply a hydraulic pressure to each hydraulic actuator, and has an excellent weight balance related to posture stability of the entire device when a steel pipe pile is placed and when a leader is tilted.SOLUTION: Two steps are formed at a rear of a main frame 21A of a structural frame. Further, a tapered portion 21b is formed at a back side of the main frame 21A facing the steps. An engine unit 50 and a hydraulic pump 51 are arranged on a second lowest step bottom 21a4 out of the steps, and the hydraulic pump 51 and an oil tank 52 are arranged so as to face each other. For a second suction pipe L2 related to control of an oil discharge flow rate supplied to a hydraulic actuator, the oil tank 52 is connected to a second suction port 51b of the hydraulic pump 51 at almost the shortest distance without passing through a place lower than a second oil discharge port 52b.SELECTED DRAWING: Figure 6
Inventors:
Sakamoto Shimitsu
Application Number:
JP2018102774A
Publication Date:
November 17, 2021
Filing Date:
May 29, 2018
Export Citation:
Assignee:
WBM Co., Ltd.
International Classes:
E02D7/22
Domestic Patent References:
| JP10054052A | ||||
| JP47019980B1 | ||||
| JP2004293109A | ||||
| JP9235728A | ||||
| JP57033740U |
Foreign References:
| US20150275459 | ||||
| CN207362844U |
Attorney, Agent or Firm:
Motonari Tomisaki
Machida Mitsunobu
Tomisaki you
Machida Mitsunobu
Tomisaki you
Previous Patent: Lighting equipment
Next Patent: Polyamide fiber with excellent wear resistance and its manufacturing method
Next Patent: Polyamide fiber with excellent wear resistance and its manufacturing method