4results about How to "Avoid construction accidents" patented technology

The application discloses a pile driver intelligent guiding device arranged on the surface of a machine body and comprising a vertical guiding mechanism, the vertical guiding mechanism comprising a frame rod fixedly connected with the machine body, a fixed plate fixedly installed at the end of the frame rod, and a universal joint arranged on the top surface of the fixed plate. The pile driver intelligent guiding device is connected with the fixed plate through the universal joint, and a sliding cylinder-screw rod driving structure is combined to adjust the pitch angle of a laser instrument in real time. When the sliding cylinder slides along the fixed cylinder, the fixed plate is pushed to rotate around the universal joint as the fulcrum, so that the laser line emitted by the laser instrument is always perpendicular to the ground, the high-precision guiding requirement of the vertical implantation of a steel sheet pile is met, the inner wall of the sliding cylinder is provided with an embedded nut and is threadedly connected with a screw rod, the end of the screw rod is limited from being separated from the sliding cylinder through a stop ring, the threaded connection is prevented from being invalid due to vibration or impact, the surface groove of the sliding cylinder is matched with the inner wall protrusion of the fixed cylinder to prevent the rotation of the sliding cylinder and ensure that the sliding direction is always along the axial direction, and the structural reliability is improved.

This invention relates to the field of pile foundation sediment cleaning devices, and discloses a sediment cleaning device for embedded rock piles, comprising: a first support frame; a vertical through hole provided on the horizontal plate of the first support frame, through which a first guide tube passes; a second guide tube fixed to the upper side wall of the first guide tube and sealed with a transverse sealing plate, the top side wall of the first guide tube also being provided with a slurry return pipe; a third guide tube located above an adjusting plate, the second guide tube vertically passing through the transverse sealing plate and rotatably extending into the interior of the first guide tube; a fourth support frame fixed to the upper surface of the adjusting plate; and an adjusting component for rotating the first guide tube. The device of this invention rotates the second guide tube through the adjusting component, and in conjunction with the threaded section outside the second guide tube and the first support frame, enables continuous position adjustment of the air-lift reverse circulation device relative to the embedded rock pile hole, ensuring the reliability of the air-lift reverse circulation device in cleaning sediment.

The utility model discloses a punching device for house building construction. The punching device comprises a power assembly, a positioning assembly, a fixing assembly and a drill rod. The fixed end of the drill rod is detachably connected with the fixing assembly, the fixing assembly is used for clamping and fixing the fixed end of the drill rod, and the fixing assembly is further fixed to the power output end of the power assembly so as to drive the drill rod to rotate. The power assembly is detachably arranged on the positioning assembly, the positioning assembly is used for abutting against a to-be-punched face to be punched for positioning, and meanwhile the positioning assembly is further used for guiding and limiting the power assembly in the punching pushing direction so that the drill rod can vertically drill the to-be-punched face. According to the device, it can be ensured that the drill rod is always kept in the state of being perpendicular to the face to be punched in the punching process, the problem that punching is inaccurate due to the fact that the drill rod deviates or inclines in the drilling and beating process is solved, meanwhile, the drill rod is detachably connected with the fixing assembly so that the drill rod can be rapidly disassembled and replaced, then the downtime is shortened, and the production efficiency is improved. And the overall construction efficiency and the construction flexibility are improved.

This invention discloses a method for determining the horizontal misalignment between segments during the construction of prefabricated caissons, comprising: obtaining the unit weight γ of each soil layer. i The thickness h of each soil layer i The internal friction angle of soil layer i on the outer sidewall of the caisson and the cohesion c of each soil layer. i ; Calculate the active earth pressure coefficient K of each soil layer based on the internal friction angle of soil layer i on the outer sidewall of the caisson. ai ; Calculate the earth pressure intensity p at the top of the upper segment above the bolt. au1 Earth pressure intensity p at the bottom of the upper segment of the bolt au2 Earth pressure intensity p of the lower segment ad Based on the earth pressure strength p of the upper segment of the bolt. au Earth pressure strength p of the lower segment ad Calculation of the height L of a single segment and the force V exerted by the bolts on the upper segment. au The force V acting on the lower segment by the bolts ad According to the force V exerted by the bolt on the upper segment au The force V acting on the lower segment by the bolts ad Calculate the uniformly distributed load q on the bolt; calculate the horizontal misalignment w between the segment rings based on the uniformly distributed load q on the bolt. This enables accurate measurement of the horizontal misalignment between the segment rings.