JPH02125008U - - Google Patents

Description

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

添付図面は本考案の実施例を示し、第１図は路
面堀削車の簡略化した平面図、第２図は第１図の
Ｘ−Ｘ′線に沿つた断面図、第３図は堀削用超硬
ビツドの簡略図、第４図は堀削用超硬ビツドを堀
削用ドラムのホルダーに差し込んだ断面図、第５
図は第４図のＳ部分の拡大図、第６図は使用途中
の第４図のＳ部分の拡大図であり、図中１は路面
堀削車、２は堀削用ドラム、３は路面堀削用超硬
ビツド、４はコンクリート、５は路床、６はホル
ダー、７は支持穴、８はスプリング、９は嵌合テ
ーパ穴、１０はビツド用チツプ、１１は超硬ピン
、１２はピン圧入穴、１３はビツド用チツプの本
体のコンクリート面との接触部分である。 The accompanying drawings show an embodiment of the present invention, in which Fig. 1 is a simplified plan view of a road excavation vehicle, Fig. 2 is a sectional view taken along the line A simplified diagram of the carbide bit for drilling, Figure 4 is a cross-sectional view of the carbide bit for drilling inserted into the holder of the drilling drum, and Figure 5 is a simplified diagram of the carbide bit for drilling.
The figure is an enlarged view of the S part of Fig. 4, and Fig. 6 is an enlarged view of the S part of Fig. 4 during use. Carbide bit for drilling, 4 is concrete, 5 is roadbed, 6 is holder, 7 is support hole, 8 is spring, 9 is fitting taper hole, 10 is bit tip, 11 is carbide pin, 12 is The pin press-fit hole 13 is the part of the body of the bit tip that comes into contact with the concrete surface.

Claims (1)

【実用新案登録請求の範囲】 ビツド本体とビツド本体先端のビツド用チツプ
より成り、路面に当てて回転せしめることにより
、上記のビツド用チツプで路面を堀削する超硬ビ
ツドに於いて； 上記したビツド用チツプ１０を鉄系金属にする
と共に、このビツド用チツプ１０に所定の分布で
多数のピン穴１２を開口し、上記ピン穴１２に超
硬合金製のピン１１を圧入し、この圧入したピン
１１群をもつてビツド用チツプ１０としたことを
特徴とする路面堀削用超硬ビツド。[Claims for Utility Model Registration] In a carbide bit consisting of a bit body and a bit tip at the tip of the bit body, the bit tip excavates the road surface by applying it to the road surface and rotating it; The chip 10 for the bit is made of iron-based metal, and a large number of pin holes 12 are opened in this chip 10 in a predetermined distribution, and pins 11 made of cemented carbide are press-fitted into the pin holes 12. A carbide bit for road surface excavation, characterized in that a bit tip 10 has a group of 11 pins.