Japan, March 5 -- TOYO KIKAKU KK has got intellectual property rights for 'ATTACHING STRUCTURE BETWEEN TIP OF MOVABLE OPERATING ARM OF EXCAVATION MACHINE AND EXCAVATION TOOL.' Other related details are as follows:
Application Number: JP,2022-034699
Category (FI): E21B4/14@B
Stage: PROBLEM TO BE SOLVED: To provide a structure in which an excavation tool 4 that applies pressing force, rotational force, and repeated impact force from a built-in air hammer device H to an excavation blade B to effectively excavate the ground/mass is attached to a tip portion 2 of an operating arm 1 that is operated with freedom in vertical, longitudinal, and horizontal directions of a crane work vehicle G, wherein a connection structure can suppress vertical reaction force, rotational reaction torque, and reaction force of repeated impact force generated from the ground side during excavated by the excavation blade B from damaging or wearing out a connection portion between the excavation tool 4 and the tip portion 2, especially a swivel portion S.SOLUTION: By moving a sliding angle shaft 43 connected via an air hammer device H above an excavation tool up and down in an internal space of a cylindrical portion 41 connected to a tip portion 2 and rotated, energy of reaction force of rotational force, counter torque, and repeated impact force is released to prevent strong loads from acting on a structure of a swivel portion, thereby reducing damage to the swivel portion and extending the life of the excavation tool.SELECTED DRAWING: Figure 2 (Grant)
Filing Date: March 7, 2022
Publication Date: Sept. 20, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
