52results about How to "Reduce the number of punch holes" patented technology

The invention provides a fully-recycled body expanding anchor rod and a construction method for anchoring ground using the same. The fully-recycled body expanding anchor rod comprises a main machine rack, a sealed cladding bag and a non-adhesive steel strand, wherein the main machine rack comprises a grouting core pipe, an upper assembly, a lower assembly and a spiral stirrup; the top of the grouting core pipe is connected with a grouting recycled pipe, and the bottom of the grouting core pipe is provided with a one-way valve; the sealed cladding bag is sleeved outside the grouting core pipe and the spiral stirrup of the main machine rack; the both ends of the sealed cladding bag are respectively fixed on the upper assembly and the lower assembly; the non-adhesive steel strand is wounded outside the sealed cladding bag; the both ends of the non-adhesive steel strand extend outside the grouting core pipe; the middle part of the non-adhesive steel strand is adhered to the bottom of the lower assembly; and the positions of the non-adhesive steel strand, which are close to the upper assembly, are slidably connected with the both sides of the outer wall of the upper assembly. With the adoption of the fully-recycled body expanding anchor rod and the construction method thereof, the grouting recycled pipe and steel wires in the non-adhesive steel strand of an anchor beam body can be entirely recycled and reused, so that the construction cost is reduced, and the pollution of the underground soil can be reduced. Thus, the fully-recycled body expanding anchor rod and the construction method are beneficial to energy conversation and emission reduction.

The invention discloses a combined multi-electrode high-voltage pulse discharge fragmentation hard rock device and a fragmentation method, which are applied to the rock mass to be crushed, including: a negative electrode, a positive electrode and a pulse power meter; the rock mass to be crushed is pre-set There are a plurality of operation holes adapted to the negative electrode and the positive electrode, and the negative electrode and the positive electrode are electrically connected to the pulse power meter; the present invention uses one negative electrode or a small number of negative electrodes Cooperate with the electrode arrangement of multiple positive electrodes to effectively avoid edge discharge.

The invention discloses a PCB encoding identification method. A drilling device processes multiple through holes on a PCB. The multiple through holes are distributed in an array and the distance between every two adjacent through hole represents a one-bit number. The multiple bits of numbers are arranged successively to form a code. When decoding is carried out, an image recognition device acquires the multiple through holes and obtains the successively arranged number codes by measuring the distance between every two adjacent through hole. The method forms an encoding identifier by drilling the PCB so as to further record the correlative information of the PCB, thereby effectively prevent the correlative information from being corroded and cleaned.

Embodiments of the present invention provide a dual circularly polarized antenna unit and a dual circularly polarized front antenna, which relate to the field of antenna technology. The dual circularly polarized antenna unit includes a first radio frequency microwave board, a second radio frequency microwave board, a dual Circular pole bridge and radiation patch, the present invention adopts the structure of multilayer board with metal vias, realizes the planar double circular polarization function of the multilayer board structure, and sets the double circular pole bridge and radiation patch respectively on the At the same time, the quasi-coaxial structure of the input end is achieved by drilling holes on the first radio frequency microwave board, which breaks through the technological limitations and makes the drilling method available in the Ka and above frequency bands, which meets the technological requirements and simplifies the process. structure, which solves the feeding problem.