公开(公告)号：US3800886A

公开(公告)日：1974-04-02

申请号：US3800886D

申请日：1972-10-24

Applicant: BAZHAL A ,  PONOMOZENRO L

Inventor： BAZHAL A ,  PONOMOZENRO L

IPC: E21B1/38 ,  B25D15/02

CPC classification number: E21C3/04

Abstract: The machine incorporates an air-operated striking piston whose body contains an air-distribution arrangement and a hammer reciprocating due to the action of compressed air so as to deliver at the end of a work stroke a blow at a drill steel arranged in the front part of the machine. Accommodated in the front part of the machine is a rotary impulse fronthead whose body contains an annular striking piston with projections and a rotary anvil with co-operative indentations and projections so arranged that their side surfaces and walls of the fronthead body form work stroke and idle stroke chambers which connect to a source of compressed air or atmosphere at regular intervals. The projections of the annular striking piston oscillate in these chambers back and forth and through an angle at a high rate due to the action of compressed air so as to deliver at the end of a work stroke a blow at the cooperative projections of the rotary anvil, causing to rotate the rotary anvil linked with the drill steel. Arranged in the front part of the fronthead body is a ratchet mechanism which assures that the rotary anvil and the drill steel rotate in only one direction.

Abstract translation: 该机器包括气动打击活塞，其主体包含空气分配装置和由于压缩空气的作用而往复运动的锤，以便在工作结束时输送在布置在前部的钻钢 的机器。

公开(公告)号：US3811515A

公开(公告)日：1974-05-21

申请号：US32340573

申请日：1973-01-15

Applicant: BAZHAL A ,  BESSARAB A ,  MISHKIN A

Inventor： MISHKIN A ,  BESSARAB A ,  BAZHAL A

IPC: B25D15/00 ,  E21B6/08

CPC classification number: E21B6/08

Abstract: A machine in which of an air-operated striking rearhead has a body accommodating a hammer piston reciprocating under the action of compressed air so as to deliver blows at a drill steel located at the front end of the machine, and a reversible rotary impulse fronthead has a body accommodating two rotatable and axially movable annular pistons provided with impact projections and indentations formed between the projections, with the pistons being coupled by an interengagement of the respective projections and indentations thereof, the projections and walls of the fronthead body forming work and idle stroke air chambers which are periodically placed in communication via passages with a source of compressed air and the atmosphere, and the projections of one of the annular pistons performing, under the action of air pressure, high-frequency reciprocatory angular oscillations so as to deliver blows with their impact projections at the respective projections of the other annular piston. The rotary impulse fronthead has a ratchet mechanism which ensures the rotation of one of the annular pistons and the drill steel only in one direction. In addition, the rotary fronthead is provided with means adapted to switch over the ratchet mechanism from one rotational direction to the other (from lefthand rotation to righthand rotation, and vice versa) so as to enable right- and lefthand rotation of the drill steel.

Abstract translation: 一种气动冲击后端的机体具有容纳在压缩空气的作用下往复运动的锤式活塞的主体，以便在位于机器前端的钻杆钢上传送吹风，并且可逆旋转冲击前头具有 容纳两个可旋转和可轴向移动的环形活塞的主体，其设置有形成在突起之间的冲击突起和凹陷，活塞通过相应的突起和凹槽的相互接合而联接，前端体的突起和壁形成工作和怠速行程 定期地通过具有压缩空气源和大气的通道连通的空气室，并且其中一个环形活塞的突起在空气压力的作用下执行高频往复角振荡，从而以 它们在另一个环形活塞的各个突起处的冲击突起。 旋转冲击前头具有棘轮机构，其仅在一个方向上确保环形活塞中的一个和钻钢的旋转。