TH10513B - Bolt fixing device - Google Patents

Abstract

DC60 (30/12/40) provides an anchor bolt attachment for inserting into holes in concrete ceilings or similar materials. The anchor bolts consist of an anchor sleeve and an anchor bolt. Temporarily fixed The bolts are then screwed into the mounting collar for fixing. Permanently of the mounting sleeves and bolts. In one form The bolt can be released after Permanent attachment of the sleeve is fixed. The retaining sleeve has a self-binding device to hold itself in the hole. During temporary bonding The retaining sleeve has one end with a threaded hole. And the second end with a group of Shines along the axis The bolt has a single, connected plug section that is pushed into the second end to Expand the second tip And made it bite into the surface of the inner wall of the hole. In order to achieve the clamping of the retaining sleeve Firmly in the hole The plug is generally cylindrical and uniform in diameter to prevent it from sliding off the second end of the retaining sleeve when it is pushed into the second end. In one form The plug is twisted from the bolt when the bolt is twisted with a torque greater than a predetermined value to allow the bolt to be removed after the retaining sleeve is permanently attached. A bolt attachment is provided for insertion into holes in ceilings in concrete or similar materials. The anchor bolts consist of an anchor sleeve and an anchor bolt. The bolts are then screwed into the mounting collar for fixing. Permanently of the mounting sleeves and bolts. In one form The bolt can be released after Permanently attached The retaining sleeve has a self-binding device to hold itself in the hole. During temporary bonding The retaining sleeve has one end with a threaded hole. And the second end with a group of Shines along the axis The bolt has a single, connected plug section that is pushed into the second end to Expand the second tip And made it bite into the surface of the inner wall of the hole. In order to achieve the clamping of the retaining sleeve Firmly in the hole The plug is generally cylindrical and uniform in diameter to prevent it from sliding off the second end of the retaining sleeve when it is pushed into the second end. In one form The plug is twisted from the bolt when the bolt is bit with a torque greater than the predetermined value so that the bolt can be removed following the permanent attachment of the sleeve.

Claims (8)

1. A bolt fixing device for inserting into materials with pre-drilled holes. Fastening device This spiral contains Tapered cylindrical mounting sleeve with first and second ends; The first end has a threaded hole. And the second end has a group of axial grooves; And the scaffolds, which pass through the said casings; Where the bolts have a bar part which is gripped by a thread into the threaded hole. And the plug which is pushed into the second end so that the second end is enlarged; Where the bolt has a cut at the joint between the said plug and the said rod In order to make the plug section separate from the extension rod section when the difference between the torque of the The tightening used to screw the said bolts into the said collet with the torque. The plug due to friction between the said plug and the internal wall surface of the The second tip when the bolt is turned by the abrasive torque exceeds the specified value; And where the plug part of the said bolt has one end protruding the open end of the The second end of the said end, when aligned with the said sleeve at the end, the tip of the plug has a groove for the gripping edge with that open end of the end part. Two loud To prevent the plug portion from being dislodged from the second end of the mounting sleeve. 2. Bolt fixing device according to claim 1, where the plug of the said bolts Is converted to separate from the mounting rod portion when the plug section is pushed into the The aforementioned two of the aforementioned mounting sleeves are So that after the tribute to the plug was separated from As for the seizure thereof It will move in an axial position without any rotation from being pushed by the mounting bracket. 3. Bolt fixing device according to claim 1, where at the second end of the mounting sleeve as Said at the end of the axis, there is a ridge in the form of an unfolded flange. Such a ridge has an outside diameter. Larger than the diameter of the pre-drilled hole when the casing is in the state of being removed from the Such bolts and without any force. 4. Bolt fixing device according to claim 1, where the second end of the sleeve is as follows. It has an end along the top of the side that is opposite the end one. Internal wall surface loud The said of the second tip is tapered towards that axial tip of the tip. Second such 5. Bolt fixing device according to claim 1, where the said sleeve has a center The first and the second ends, such axial grooves are provided in Characteristics extending almost to the axial center of the said center. 6. Bolt fixing device according to claim 1, where at the first end of the mounting sleeve as There is a threaded inside hole at one end and a slightly larger diameter guide hole. Relative to the main diameter of the inner thread of such a threaded hole The plug section of the latch The thread is positioned from the said fitting. This is where such cuts are made, flanges, which can be moved in the said dance. And can change radially when subjected to radial loads and which is larger than a predetermined value 7. Bolt fixing device in accordance with claim 6, where the flange of the said screw thread There is an external thread on the external surface that can be attached to the inner threaded hole of the end one. Of the said mounting sleeve And have axial length in such a way that the flange is It deforms radially when exposed to such pressure. 8. Bolt fixing device according to claim 1, where the plug part of the said bolt has The appearance is cylindrical and has a constant diameter throughout.