5results about How to "Flexible thickness adjustment" patented technology

This utility model belongs to the field of gasket technology, specifically disclosing a self-tightening sealing gasket with adjustable thickness. The utility model includes a first gasket body and a second gasket body, with a thickness adjustment assembly between them. The thickness adjustment assembly includes a stacking unit and a fixing unit. The stacking unit includes an adjusting piece, which adjusts the thickness by stacking. The thickness adjustment assembly allows for flexible thickness adjustment by increasing or decreasing the number of adjusting pieces, adapting to the installation gaps of different devices. Furthermore, the corresponding insertion structure of the limiting block and the corresponding insertion hole / slot, along with locking bolts, securely fixes the first gasket body, the second gasket body, and the adjusting piece. This ensures both thickness adjustment and overall structural stability, preventing displacement or loosening of the adjusting piece under pressure or vibration, thus maintaining the gasket's mechanical strength and sealing performance.

This utility model discloses a molding device for extruded water-cooled jackets of sandwich polyurethane foam, comprising: a base plate; an electric telescopic rod fixedly connected to the lower surface of the top plate; an upper mold plate fixedly connected to the lower end of the electric telescopic rod; an upper circulation pipe disposed inside the upper mold plate; a lower mold seat fixedly connected to the upper surface of the base plate; a lower circulation pipe disposed inside the lower mold seat; a support column fixedly connected to the lower surface of the base plate; an mounting plate fixedly connected to the side surface of the support column; a water tank fixedly connected to the upper surface of the mounting plate; a water pump fixedly connected to the left surface of the water tank via a connecting pipe; a filter fixedly connected to the output end of the water pump via a connecting pipe; a heat exchanger fixedly connected to the left surface of the filter via a connecting pipe; a tee fixedly connected to the end of the connecting pipe away from the water tank and the heat exchanger; a conveying pipe fixedly connected to the upper end of the tee; and a flexible hose fixedly connected to the upper end of the tee. This device helps ensure high-quality molding of the product.

The utility model discloses a plate shearing machine, the utility model, including fixed base and transport subassembly, its characterized in that, the fixed base top fixedly connected with transport subassembly, transport subassembly includes two square grooves, the fixed base upper surface is equipped with two square grooves, two square groove inner wall lower surface all are equipped with two sets of positioning hole, and two square groove inner wall lower surface all slidingly connected with two electric guide rails, two electric guide rails's left and right sides all are fixedly connected with two sets of connecting ears below the end, two electric guide rails are fixedly connected on square groove inner wall upper surface through positioning bolt group, through the collaborative operation of each part of conveyer subassembly, has realized to the self -adaptation transport and clamping of different specifications board, has liberated manpower. Conveyer subassembly and cutting assembly closely cooperate, can assist to complete the cutting work to various board, reach the purpose that improves plate shearing machine work efficiency and applicability, satisfies the diversified board processing demand.

This invention discloses a scaled-down design method for the impact dynamic response of aircraft stiffened plate structures, belonging to the field of aircraft structural / strength testing technology. The method comprises the following steps: defining the load parameters and geometric parameters of the aircraft stiffened plate; calculating the relative stiffness of the stiffened plate; defining the basic geometric similarity ratio of the scaled-down model of the stiffened plate; determining the similarity ratio of the stiffened plate panel thickness; determining the similarity ratio of the width, height, and spacing of the stiffeners; obtaining the geometric dimensions of the scaled-down model of the stiffened plate; acquiring the dynamic response of the scaled-down model of the stiffened plate; and, based on the similarity ratio of the dynamic response, using the scaled-down model of the stiffened plate to predict the dynamic response of the prototype. This invention overcomes the practical difficulty of scaling down test specimens based on geometric similarity for thin-walled structures like aircraft stiffened plates, while simultaneously shortening the testing cycle and scale, and saving costs.

This application discloses a method for controlling the settlement of loess dams, comprising: identifying a first region in the loess dam body where the compressive stress exceeds a preset threshold; removing the loess in the first region; filling the first region after loess removal with gravel, the first region after gravel filling being called a gravel-mixed zone; and the loess dam containing the gravel-mixed zone being called a soil-stone composite. This method abandons the traditional method of relying solely on increasing compaction, and adopts the core concept of equal volume replacement. By directly replacing part of the compressible loess volume with rigid gravel particles, it physically reduces the total amount of compressible soil within the loess dam body. Furthermore, the stable framework formed by the gravel effectively bears and transfers the overlying load. This method fundamentally improves the soil structure, thereby suppressing settlement at its source.