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US 2017/0361445 A1Published application
Arrangement in impact unit
AssigneeSandvik Mining and Construction Oy
InventorsOssi KAHRA, Juhani LAINE
Life of this patent
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Abstract
A body of an impact unit, an impact unit and a method of forming a body of an impact unit is disclosed. The body can be an elongated hollow piece including at least two body parts. The body parts are arranged successively in an axial direction of the body and are connected to each other by axial connecting joints. The connecting joints include several slanted fastening screws for connecting the body parts together.
Claims12
A body of an impact unit, comprising:
- an elongated hollow piece having a first end and a second end and an inner space inside which operable elements of an impact unit are mountable;
- at least two body parts arranged successively in an axial direction of the body, each of the body parts having axial connecting surfaces;
- and
- an axial connecting joint disposed between the at least two successive body parts, the connecting joint including a plurality of fastening screws, wherein the connecting surfaces of the body parts face towards each other and are pressed towards each other by the fastening screws, wherein the fastening screws are slanted relative to an axial direction of the body.
1 more element
An impact unit comprising:
- a body;
- an impact device located inside the body;
- and
- a coupling means device disposed at one end of the body and arranged to connect a tool to the impact unit, the body being an elongated hollow piece having a first end and a second end and an inner space inside which operable elements of an impact unit are mountable, at least two body parts arranged successively in an axial direction of the body, each of the body parts having axial connecting surfaces, and an axial connecting joint disposed between the at least two successive body parts, the connecting joint including a plurality of fastening screws, wherein the connecting surfaces of the body parts face towards each other and are pressed towards each other by the fastening screws, wherein the fastening screws are slanted relative to an axial direction of the body.
1 more element
A method of forming a body of an impact unit, the method comprising:
- forming at least two separate elongated hollow body parts;
- providing the body parts with axial connecting surfaces;
- arranging the body parts axially successively;
- and
- pressing the axial connecting surfaces of the body parts towards each other and fastening the body parts together by several slanted fastening screws, wherein a direction of the slanted fastening screws deviates from axial direction of the body.
2 more elements
Dependencies are inferred from the claim text.