4results about How to "Low shape requirement" patented technology

This application relates to the field of conveying equipment technology, and proposes a tensioning structure and a roller motor. The tensioning structure is used to connect a driving component and a rotating component. Under the drive of the driving component, the tensioning structure can drive the rotating component to rotate around a rotation axis. The tensioning structure includes: a first connecting component, which is connected to the driving component; a limiting component, including a bottom wall and a side wall provided along the periphery of the bottom wall, with an installation groove on the side wall, and the bottom wall is detachably connected to the first connecting component so that the side wall can be sleeved on the first connecting component; and a tensioning component, which engages with the installation groove, with the side of the tensioning component opposite to the first connecting component protruding from the installation groove and abutting against the rotating component. In the above-mentioned tensioning structure, a reliable frictional force is generated between the tensioning component and the rotating component to achieve a fixed connection, thereby driving the rotating component to rotate around the rotation axis. This connection method has low requirements for the shape of the tensioning structure, reduces the requirements for processing accuracy, and solves the technical problems of existing roller and sleeve connection methods that have high processing accuracy requirements and complex disassembly and assembly.

This invention discloses a laser pulse phase-based ranging system with low walking error, comprising a TIA circuit, a pulse amplification unit, a timing discrimination circuit, an RS latch circuit, and an ADC circuit. The output of the TIA circuit is connected to the pulse amplification unit, the output of the pulse amplification unit is connected to the timing discrimination circuit, and the output of the timing discrimination circuit is connected to the RS latch circuit and the ADC circuit. The pulse amplification circuit includes a differential amplification circuit and a post-amplifier circuit connected to the output of the differential amplification circuit. This invention proposes that the phase-based ranging section directly performs undersampling of the acquired analog pulse signal to a sine wave using an ADC, eliminating the need for a subsequent mixing and filtering circuit unit, thus simplifying the system circuitry and reducing power consumption. Furthermore, it proposes using the comparator delay to compensate for the walking error of pulses with different amplitudes, thereby reducing the walking error of pulses with different amplitudes and overcoming the negative impact of comparator delay on walking error.

This invention discloses a rapid prediction method for the thermal conductivity of phenolic resin based on scanning electron microscopy (SEM) images. This invention requires only conventional SEM images, extracts structural parameters such as porosity, equivalent particle diameter, and bond ratio through automated image processing, and then inputs these structural parameters into a pre-trained machine learning surrogate model to achieve rapid prediction of the material's thermal conductivity. Compared with existing methods that require multi-scale 3D reconstruction and direct numerical solutions, this invention significantly reduces the requirements for sample size and characterization equipment, simplifies the modeling process, and achieves high computational efficiency. Furthermore, because the prediction model fully incorporates the influence of nanoscale pores and particle structure on thermal conductivity during the training phase, this invention can quickly provide the effective thermal conductivity of resin-based composite materials while maintaining high accuracy, providing an efficient and reliable means of evaluating thermal conductivity performance for material formulation design and process optimization.

The utility model discloses a mining electric shovel and A-shaped frame pull rod waterproof cover plate assembly, and left cover plate and right cover plate butt joint together and arrange on the machine shed top cover plate, left fixed base and right fixed base butt joint together and arrange on left cover plate and right cover plate, and pull rod passes through from the butt joint of left and right cover plate and the butt joint of left and right fixed base, two rubber sleeves are installed between left cover plate and left fixed base and between right cover plate and right fixed base respectively, and after butt joint, two rubber sleeves surround pull rod and closely fit with the side of pull rod, and first fastening part is structured to fix and release the fixing between left and right fixed base, and second fastening part is structured to fix and release the fixing between left cover plate, left fixed base and rubber sleeve and between right cover plate, right fixed base and rubber sleeve. Based on the existing machine shed top cover plate, a group of waterproof cover plate assembly of direct connection pull rod is newly added to the upper portion, and the waterproof performance of the part is strengthened.