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The operation principle of the post cutting mechanical anchor bolt is based on the mechanical lock key of the anchor bolt the anchoring force of the concrete attack, which is mainly based on the size of the torque force. After the drilling is completed, the anchor bolt equipment uses a torque wrench to torque the screw. When a certain torque is reached, the mechanical lock key of the anchor bolt will automatically open cut into the concrete.
As we mentioned above, we briefly encountered the problem of reinforcing steel bar when we mentioned the equipment of rear enlarged bottom anchor bolt. Therefore, the standard of rear expanded bottom anchor bolt has great limitations. This is also the primary reason why it is difficult to find the rear expanded bottom anchor bolt with M20 above standard in the market. As for the self expanding bottom anchor bolt, the probability of meeting the reinforcement is relatively small because there is no independent reaming. Therefore, the sale standard of self expanding bottom anchor bolt can even reach M20. However, when using large standard anchor bolts, it is necessary to understand the arrangement of reinforcement in concrete first, so as to make a reasonable drilling plan.
The anchoring force of the reaming bolt comes the mechanical locking force formed by the locking key, which is located between the reaming hole at the bottom of the anchor hole the expansion part of the anchor rod. The anchor bolt is formed by a locking key between the reamed hole at the bottom of the anchor hole the expansion part of the anchor rod. It is divided into pre reaming anchor rod self reaming anchor rod. Its bearing capacity tensile capacity are better than the other three.
At present, more more domestic truck enterprises begin to use the bolts of the standard elevator expansion bolt to connect the body beam fix various external assembly. Compared with the traditional rivet technology, the screw technology has stronger anti-seismic anti loosing performance, is more convenient to replace, can also be used repeatedly. At present, the domestic automobile enterprises have begun to use the bolts with the technology of "Shi bilao", because the design manufacture of the bolts are all using special technology tools