6results about How to "Improve local strength" patented technology

The utility model relates to fan maintenance technical field discloses a kind of impeller dismounting device, including first clamping piece, second clamping piece, pusher plate and at least two installation rods;First clamping piece and second clamping piece are all provided with clamping cavity, and each clamping cavity is provided with inner lug;First clamping piece and second clamping piece are all provided with outer lug, and the clamping cavity is formed accommodating cavity after being connected by first clamping piece and second clamping piece, and the matching design of inner lug and impeller radial groove is combined, the accurate positioning and uniform clamping of impeller are realized;Outer lug is used as structure reinforcing part, not only strengthen the local strength of first clamping piece and second clamping piece, also provide stable installation base for installation rod, so that the axial force transmitted by installation rod of pusher plate can be uniformly, stably act on the matching surface of impeller and motor shaft, avoid direct artificial knock impeller or heat impeller shaft sleeve to cause impeller or motor shaft damage, significantly improve dismounting efficiency and security.

The application discloses a kind of local reinforcement selected area laser melting deposition high-strength titanium alloy preparation method and system, belong to additive manufacturing technical field.The local reinforcement selected area laser melting deposition high-strength titanium alloy preparation method provided by the application, by establishing target titanium alloy structure three-dimensional model and carrying out finite element limit load simulation analysis, stress distribution and potential dangerous area are identified;Based on the analysis result, the performance requirement is divided, the material enhanced local area is determined, and the laser scanning path and powder feeder movement trajectory are planned;Path file is imported into composite equipment to set process parameters;Titanium-based composite material powder is selectively laid in the enhanced area, and a locally reinforced structure is obtained by selective laser melting.The scheme realizes the spatial selective distribution of powder composition, forms a uniform distribution of high-stress areas, significantly improves the local strength and maintains the overall strength and plasticity matching, effectively solves the problem of insufficient performance matching of titanium alloy components under complex load.

The utility model provides an LED lamp with high stability performance, the LED lamp with high stability performance comprises an LED lamp cover, the LED lamp cover comprises a back plate, the back plate is sequentially provided with a first reinforcing protruding strip, a second reinforcing protruding strip, a third reinforcing protruding strip, a fourth reinforcing protruding strip and a fifth reinforcing protruding strip from left to right, and the first reinforcing protruding strip, the second reinforcing protruding strip, the third reinforcing protruding strip, the fourth reinforcing protruding strip and the fifth reinforcing protruding strip are sequentially arranged on the back plate from left to right. The two ends of the first reinforcing protruding strip, the two ends of the third reinforcing protruding strip and the two ends of the fifth reinforcing protruding strip are flush with the two ends of the back plate, and the length of the second reinforcing protruding strip and the length of the fourth reinforcing protruding strip are smaller than the length of the back plate. The stability of the LED lamp is improved, meanwhile, line distribution is optimized, the installation difficulty is lowered, and later maintenance is facilitated.

The invention provides a pavement repairing structure of a base layer structure type crack and a green disposal method thereof, and the method comprises the following steps: step 1, according to a crack distribution condition, determining dimensions of surrounding cracks in x and y directions, the x direction being a driving direction, the length being A, the width being B and the depth being D, and the thickness of a panel needing to be cut; 2, determining whether the main distribution directions of the main cracks on the x plane and the y plane are x direction, y direction or xy direction; thirdly, a plurality of kerfs are arranged in the direction parallel to the main distribution direction of the main cracks, the kerf width is 2 cm, the kerf depth is D, the distance S between every two adjacent kerfs is equal to the distance between the old pavement cracks, the average value is obtained, and according to the arrangement, the corresponding kerfs are cut in the direction of the main cracks in the second step; and then the kerfs are cleaned, grouting repair should be conducted on the bottom void areas of the plates, then grouting reinforcement is conducted on the kerfs, asphalt sealing is conducted on the crack areas, and after the crack areas are treated, maintenance and paving of the whole pavement are conducted.

A thyristor assembly with multiple combined chips comprises a shell and a base, the base is provided with at least three groups of chipsets which are combined to form a rectangular shape, and each chipset comprises a chip, an electrode, a first conductive plate, a second conductive plate, a third conductive plate and a fourth conductive plate. The first current-conducting plate, the second current-conducting plate, the third current-conducting plate and the fourth current-conducting plate are spliced to form a rectangular shape. The at least two chip sets are arranged on the same base in parallel, and the four current-conducting plates are spliced into the rectangle, so that the internal space of the shell is fully utilized, the whole assembly is more compact, the tedious procedure of selecting from multiple groups when three or more groups are formed by two chips as one group in the prior art is eliminated, and the production efficiency is improved. Therefore, the installation efficiency and the assembly consistency are obviously improved. The overall structure is reasonable, the space utilization rate is high, material waste is reduced, the size of the shell is reduced, miniaturization design and on-site rapid replacement of equipment are facilitated, and the system integration degree and operation and maintenance convenience are further improved.