发明名称 |
MED SLAGVERKAN ARBETANDE MASKIN |
摘要 |
A percussive tool has a working tool mounted for reciprocations in a barrel. A collar is arranged between a shank and a working portion of the working tool. The shank of the working tool reciprocates in a guide bushing secured in the barrel to ensure reciprocations of the working tool. There is provide4d a member for determining the angular position of the working tool during the reciprications, the member comprising either the barrel proper in case of concrete breakers, or a hood, e.g. in chipping hammers. For positively controlling the angular position of the working tool, there is provided a spring having two portions of different cross-sectional configuration, a first portion being coupled for a combined rotation to the member determining the angular position of trhe working tool, and a second portion being of a cross-sectional configuration corresponding to the cross-sectional configuration of the working portion of the working tool. |
申请公布号 |
SE7812312(A) |
申请公布日期 |
1979.06.10 |
申请号 |
SE19780012312 |
申请日期 |
1978.11.29 |
申请人 |
* VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNO-KONSTRUKT;ORSKY INSTITUT MEKHANIZIROVANNOGO I RUCHNOGO STROITELNO-M;OTAZHNOGO INSTRUMENTA VIBRATOROV I STROITELNO-OTDELOCHNYK;H MASHIN (VNIISMI) |
发明人 |
I V * NIKOLAEV;A I * LEDNIKOV;B G * GOLDSHTEIN;L A * GORNIK |
分类号 |
B25D17/28;B25D17/08;E21C37/24;(IPC1-7):25D17/08 |
主分类号 |
B25D17/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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