JPS59192984U

JPS59192984U - Air hammer device bit mounting structure

Info

Publication number: JPS59192984U
Application number: JP8843083U
Authority: JP
Inventors: 浜村　紘之; 川崎　博行
Original assignee: 株式会社　利根ボ−リング
Priority date: 1983-06-09
Filing date: 1983-06-09
Publication date: 1984-12-21
Also published as: JPS6315420Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案に係るエアハンマ装置の概略構造を示す
側面図、第２図は本考案に係るエアハンマ装置のビット
取付構造の構造を示す断面図、第３図はビット形状を示
す第２図上で■−■線に沿う底面図、第４図は第２図上
でＩＶ−ＩＶ線に沿う断面図、第５図は第２図上で■−
■線に沿う断面図、第６図は第５図上Ａ部の拡大断面図
、第７図は本考案に係る第２実施例の構造を示す底面図
、第８図は本考案に係る第３実施例の構造を示す底面図
である。　　　　・１０・・・・・・エアハンマ装置、１２・・・・・・エ
アハンマ本体、１４−−−−−−ピストンラム、１８・
・・・・・ビット、２２・・・・・・取付は孔、２４・
・・・・・ビット軸、２６・・・・・・ピン孔、２８・
・・・・・ビット軸の環状溝部、３０・・・・・・ビッ
ト軸の上面、３２・・・・・・取付は孔の天井面、３４
・・・・・・中間部材としてのピン。第２図冒Fig. 1 is a side view showing a schematic structure of an air hammer device according to the present invention, Fig. 2 is a sectional view showing the structure of a bit mounting structure of an air hammer device according to the present invention, and Fig. 3 is a second view showing the bit shape. The top is a bottom view taken along line ■-■, Figure 4 is a sectional view taken along line IV-IV in Figure 2, and Figure 5 is a bottom view taken along line ■-■ in Figure 2.
■A sectional view taken along the line; FIG. 6 is an enlarged sectional view of part A in the upper part of FIG. 5; FIG. 7 is a bottom view showing the structure of the second embodiment according to the present invention; FIG. FIG. 7 is a bottom view showing the structure of the third embodiment.・ 10... Air hammer device, 12... Air hammer body, 14... Piston ram, 18...
...Bit, 22...Mounting hole, 24.
...Bit axis, 26...Pin hole, 28.
...Annular groove of bit shaft, 30...Top surface of bit shaft, 32...Mounting is done on ceiling surface of hole, 34
...Pin as an intermediate member. Figure 2

Claims

[Scope of utility model registration request]

(1) A rotatable and axially movable drill rod, a cylindrical air hammer body attached to the tip of the drill rod, and a piston ram inside the air hammer body that is supported by the tip of the air hammer body so as to be slidable in the axial direction. In an air hammer device that has a bit support that receives a striking force from the bit support and a plurality of bits that are removably attached to the tip of the bit support, a groove is formed on the outer periphery of the bit axis of the bit, and the bit support A mounting hole is formed in which the bit shaft is fitted, and when the bit shaft is mounted, an intermediate member provided on the bit support is positioned in the groove of the bit shaft in a state where the bit shaft is fitted into the hole, and the bit is supported on the bit support. A bit mounting structure for an air hammer device, wherein the top surface of the bit shaft is in contact with the ceiling surface of the hole and receives impact force from the bit support.

(2) The intermediate member is composed of a pin extending in a direction perpendicular to the axis of the drill rod, and the end of the pin is caulked to prevent removal. Bit mounting structure of the air hammer device in Section 1.