JPH01164386U

JPH01164386U -

Info

Publication number: JPH01164386U
Application number: JP6124888U
Authority: JP
Priority date: 1988-05-10
Filing date: 1988-05-10
Publication date: 1989-11-16

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の請求項(1)，(2)に係る掘削機
のピツクの一実施例を示す側面図である。第２図
は、本考案の請求項(3)に係る掘削機のピツクの
一実施例を示す側面図、第３図は第２図―線
に沿う断面図、第４図は他の実施例を示す断面図
である。第５図は請求項(4)に係るチツプを有す
るピツクの正面図、第６図は第５図―線に沿
う断面の拡大図である。第７図は従来のピツクを
示す正面図、第８図は同側面図、第９図は第８図
―線に沿う断面図である。１，５，８，１４…ピツク、２，６，１０…ピ
ツク本体、３…第１のチツプ、４…第２のチツプ
、７，９，１１…チツプ、７ａ…突出部、１２…
高靭性層、１３…高硬度層。 FIG. 1 is a side view showing an embodiment of a pick for an excavator according to claims (1) and (2) of the present invention. Fig. 2 is a side view showing one embodiment of a pick for an excavator according to claim (3) of the present invention, Fig. 3 is a sectional view taken along the line of Fig. 2, and Fig. 4 is another embodiment. FIG. FIG. 5 is a front view of a pick having a chip according to claim (4), and FIG. 6 is an enlarged cross-sectional view taken along the line of FIG. FIG. 7 is a front view showing a conventional pick, FIG. 8 is a side view of the same, and FIG. 9 is a sectional view taken along the line of FIG. 8. 1, 5, 8, 14... Pick, 2, 6, 10... Pick body, 3... First chip, 4... Second chip, 7, 9, 11... Chip, 7a... Projection, 12...
High toughness layer, 13...High hardness layer.

Claims

【実用新案登録請求の範囲】 (1) ピツク本体の先端の掘削進行方向前面側に
チツプを設けてあるピツクにおいて、該チツプよ
りも該進行方向後方側にさらに少なくとも１個の
チツプを設けたことを特徴とする掘削機のピツク
。 (2) 該進行方向後方側に設けられたチツプが丸
型チツプであることを特徴とする特許請求の範囲
第１項に記載の掘削機のピツク。 (3) ピツク本体の先端にチツプを設けてあるピ
ツクにおいて、該チツプの基端を根状にピツク本
体に埋設したことを特徴とする掘削機のピツク。 (4) ＷＣよりなる高靭性層と、ＳｉＣ又は立方
晶ＢＮよりなる高硬度層とを積層してなる掘削機
のチツプ。[Scope of Claim for Utility Model Registration] (1) In a pick in which a tip is provided on the front side in the direction of excavation movement at the tip of the pick body, at least one tip is further provided on the rear side in the direction of movement of the pick. Excavator pick featuring. (2) The pick for an excavator according to claim 1, wherein the tip provided on the rear side in the traveling direction is a round tip. (3) A pick for an excavator, in which a tip is provided at the tip of the pick body, and the base end of the tip is embedded in the pick body in the form of a root. (4) An excavator chip made by laminating a high toughness layer made of WC and a high hardness layer made of SiC or cubic BN.