| 摘要 |
FIELD: mining and building industries, particularly pneumatic machines thereof. ^ SUBSTANCE: perforator comprises at least two coupling bolts to fixedly connect serially arranged air tap, valved air-distribution device, percussion unit body provided with lid, stator and stem with axle-box with each other. Each coupling bolt is installed along perforator axis by means of two fastening extensions with coaxially arranged mount seats for coupling bolt receiving. One fastening extension is created on air tap body; another one is created on stem body. In accordance to the first perforator variant air-distribution device body and percussion unit body are provided with mounting extensions for at least two coupling bolt receiving. The mounting extensions have mount seats for coupling bolts. One end surface of mounting extension created on air-distribution device body is in register with end surface of that created on percussion unit body from air-distribution device. Another end surface of mounting extension created on air-distribution device body is aligned with that of fastening extensions on air tap body. In accordance to the second perforator variant mounting extensions are formed on percussion unit lid body and on stator body and adapted to receive at least two coupling bolts. The mounting extensions have seats for coupling bolts. One end surface of mounting extension formed on stator body mates that of mounting extension created on percussion unit lid body. Another end surface of mounting extension is aligned with that of fastening extension made on stem with axle-box. Mount seats have outlines corresponding to that of fastening extensions in plane view. Perforator formed in accordance to the third variant involves technical decisions of the first and the second variants. ^ EFFECT: elimination of misalignment of stator stem and tap body axes with respect to body axis and decreased perforator installation time. ^ 20 cl, 1 dwg |
