5 results about "Effective depth" patented technology

The invention relates to a 42CrMo steel nitriding part quenching machining allowance determination method and system, and relates to the field of metal nitriding treatment.The 42CrMo steel nitriding part quenching machining allowance determination method comprises the steps that a split image of a split face of a part is collected; analyzing a feature distance according to the split image; when the feature distance is greater than a preset initial margin, calculating a difference between the preset initial margin and the feature distance, and defining the difference as a correction step length; and the machining allowance is determined through the correction step length and a preset initial allowance, and the machining allowance is defined as the initial allowance. The quenching device has the effects that the quenching effective depth and mechanical performance of the part are improved, and the situation that the machining allowance is inaccurate is reduced.

The application provides a setting method of an effective depth of a shock isolation trench. The setting method of the shock isolation trench is as follows: determining a shock influence range according to a connecting line of a region boundary line adjacent to a side of an existing building of a vibration source range and an angle point of an outer contour of the existing building, then determining a length of the shock isolation trench according to the shock influence range, then controlling the vibration source to move on the region boundary line adjacent to the side of the existing building of the vibration source range, and then determining an effective shock isolation effective depth of the shock isolation trench by monitoring a measured horizontal acceleration and a measured vertical acceleration at the angle point of the outer contour of the existing building and comparing the measured horizontal acceleration and the measured vertical acceleration with a standard horizontal acceleration and a standard vertical acceleration of the region during the moving process. The application considers the law of vibration propagation attenuation with distance and quantitatively digs the effective depth of the shock isolation trench, reduces the earthwork excavation of the shock isolation trench, reduces the construction cost, and effectively blocks the propagation of the vibration.

The invention discloses a welding method for a large-length-diameter-ratio stainless steel assembly, and relates to the technical field of stainless steel workpiece welding. The welding method for the stainless steel assembly with the large length-diameter ratio comprises the steps of pre-welding treatment, workpiece butt joint and assembly clearance measurement, vacuum tack welding and clearance remeasurement, heat dissipation tool assembly and vacuum seal welding, fusion welding and heat preservation treatment. By optimizing the technological process and matching with a special heat dissipation tool, the problems of welding deformation and substandard coaxiality of the stainless steel assembly with the large length-diameter ratio are effectively solved. The welding defect source is reduced through pre-welding treatment, the precision basis is guaranteed through measurement and remeasurement of an assembly gap, heat deformation is cooperatively restrained through sealing welding, fusion welding and subsequent heat preservation treatment in a vacuum environment, high coaxiality of the assembly is guaranteed, meanwhile, the requirements for the effective welding depth and the airtight performance are met, the welding bead quality is good, and the mechanical property is good; the welding reliability is obviously improved, the service life of the assembly is obviously prolonged, and the strict welding requirement of the large-length-diameter-ratio stainless steel assembly is met.

This invention provides a method for determining the effective reinforcement depth and range of dynamic compaction, comprising: conducting multiple sets of dynamic compaction tests on the construction foundation; in the multiple sets of dynamic compaction tests, the total compaction energy is a constant value, and the number of compaction blows or the compaction energy of each blow is varied to form a set of dynamic compaction tests; arranging multiple monitoring points in the construction foundation around the selected compaction points of the dynamic compaction tests, and arranging acceleration sensors and pore water pressure sensors at the monitoring points; acquiring soil data before and after compaction at each monitoring point, as well as acceleration data and pore water pressure data collected by the sensor units after compaction, to calculate the reinforcement improvement rate of the monitoring points in each set of dynamic compaction tests, and to calculate the reinforcement analysis data of each monitoring point; based on the reinforcement analysis data of the monitoring points obtained from the multiple sets of dynamic compaction tests, determining the effective reinforcement depth and horizontal range of dynamic compaction on the construction foundation. This invention can accurately obtain the effective reinforcement depth and range of dynamic compaction.

The utility model provides a profile traction structure which comprises a rack, a clamping oil cylinder and a pressing plate and further comprises a base plate, an anti-skid groove is formed in the clamping face of the base plate, a connecting bolt is screwed in the anti-skid groove, the connecting bolt penetrates through the base plate and then is screwed with the pressing plate, and a filling strip located in the anti-skid groove is arranged on the connecting bolt. The base plate with the anti-skid groove is additionally arranged on the pressing plate, the effective depth of the anti-skid groove is changed along with the screwing-in depth of the connecting bolt, the friction force between the anti-skid groove and the sectional material can be increased, and the slipping phenomenon is prevented.