Apparatus for making holes in soil

摘要

PCT No. PCT/SU89/00050 Sec. 371 Date Jan. 12, 1990 Sec. 102(e) Date Jan. 12, 1990 PCT Filed Feb. 21, 1989 PCT Pub. No. WO89/11005 PCT Pub. Date Nov. 16, 1989.An apparatus has an eccentric shaft on which are mounted rolls connected to one another by flexible members in the form of a corrugated collar for end sealing of the rolls and with auxiliary members for radial sealing of the rolls. The auxiliary members are received in a radial clearance defined between the adjacent rolls which are made hollow.