Pressure pipeline tapping machine

Pressure pipeline tapping machine

  • CN 102,489,742 B
  • Filed: 12/06/2011
  • Issued: 09/10/2014
  • Est. Priority Date: 12/06/2011
  • Status: Active Grant
First Claim
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1. a Pressurized driller for pipeline, is characterized in that, this tapping machine comprises housing, main shaft, mandrel, drilling tool, transmission mechanism, delivering gear, main shaft bottom is rotatably arranged in housing by bearing, and stretch out from housing on main shaft top, main shaft is hollow shaft, and mandrel is slidably fitted in the centre bore of main shaft, and circumferentially fixing with main shaft, lower housing portion is provided with and supplies and the airtight syndeton being connected in outside, and mandrel lower end passes from the via hole of the syndeton setting of lower housing portion, between via hole hole wall and mandrel, by hermetically-sealed construction, is sealed, and drilling tool is fixed on mandrel lower end, transmission mechanism is arranged between the bottom and housing sidewall of main shaft in housing, and transmission mechanism is outside equipped with power intake at housing, and external impetus rotates through transmission mechanism drive shaft, delivering gear comprises driving wheel, driven pulley, intermediate transmission mechanism, feed nut, driving wheel is sleeved on main shaft upper axis with it and is circumferentially fixing with main shaft, driven pulley is rotatably sleeved on the main shaft axle body of driving wheel top, main shaft top axle body is with external screw thread, feed nut thread is connected to it main shaft upper axis, on driven pulley and between feed nut, be provided with linkage, the driving wheel rotating with main shaft drives driven pulley to rotate around main shaft by required rotating speed through intermediate transmission mechanism, simultaneously, driven pulley orders about feed nut by the linkage on it and together around main shaft, rotates with it, and make thus feed nut along main axle moving, along with drilling tool boring, feed nut moves down along main shaft, and is moved down and made drilling tool autofeed by pushing tow mandrel, for this reason, mandrel upper end or close its upper end are provided with the limited block that extends radially out main shaft, and, on main shaft axle body, be provided with for the axially movable slotted hole of this limited block or elongated slot.

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