US 12,352,001 B2
Vibratory hammer with electric motor
Daniël De Jager, Hendrik Ido Ambacht (NL); Adis Bajric, Breda (NL); Joannes Christoffel Werri, Kwadendamme (NL); and Alexander Jorissen, Loosdrecht (NL)
Assigned to Electric Foundation Equipment B.V., Klundert (NL)
Appl. No. 18/018,171
Filed by ELECTRIC FOUNDATION EQUIPMENT B.V., Klundert (NL)
PCT Filed Jul. 26, 2021, PCT No. PCT/EP2021/070836
§ 371(c)(1), (2) Date Jan. 26, 2023,
PCT Pub. No. WO2022/023254, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2026179 (NL), filed on Jul. 30, 2020.
Prior Publication US 2023/0265631 A1, Aug. 24, 2023
Int. Cl. E02D 7/18 (2006.01); E02D 11/00 (2006.01); H02K 19/02 (2006.01)
CPC E02D 11/00 (2013.01) [H02K 19/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A vibratory hammer for driving or retracting sheet piles, pipes or other elements into or from soil, said vibratory hammer comprising:
a vibration case;
an even number of pairwise arranged eccenter weights, which are rotationally mounted in the vibration case;
at least one synchronous electric motor as a drive motor for driving the rotation of the eccenter weights;
a clamp attached to the vibration case, said clamp comprising gripping jaws for gripping the sheet piles, pipes or other elements; and
a yoke for suspending the vibratory hammer from a hoist cable or the like, said yoke being connected to the vibration case via one or more vibration damping elements, wherein the at least one synchronous electric motor is a permanent-magnet synchronous motor, specifically a PMSM type motor.