6results about How to "Optimize wall thickness" patented technology

The invention relates to the field of waterproof sealing materials, and discloses a composite high-weather-resistance rubber waterstop which is composed of an outer layer, a middle layer and an inner layer. The outer layer contains 3%-8% of nano titanium dioxide, 2%-5% of nano zinc oxide, 50%-70% of a rubber matrix and 1%-3% of an ultraviolet light absorber, and the total proportion of the outer layer is 10%-20%. The middle layer is composed of 70%-85% of EPDM, 5%-10% of carbon fiber and 5%-10% of plasticizer, and the total proportion of the middle layer is 60%-75%. The inner layer is a dynamic covalent bond rubber material and contains 5%-10% of a vulcanizing agent and 1%-3% of an antioxidant, the rubber material accounts for 80%-90%, and the inner layer accounts for 15%-25% in total. Through a multi-layer composite structure, a dynamic covalent bond self-repairing material and an optimized vulcanization process, the comprehensive performance of the water-stop belt is remarkably improved, and particularly the durability and the service life of the water-stop belt in a long-term exposure environment are improved.

The application provides a kind of nonlinear filtering method of pulse eddy current detection signal, belong to nondestructive testing technical field, can at least partially solve the problem that magnetic field decay voltage signal is greatly influenced by noise in pulse eddy current detection, traditional smoothing filter is easy to introduce signal distortion.The method is used for the pulse eddy current detection signal receiving processing of metal structure with cladding layer, comprising: collecting magnetic field decay voltage signal in pulse eddy current detection process;Nonlinear compression transformation is carried out on the time axis corresponding to the magnetic field decay voltage signal;Smooth filtering time window of preset length is set on the time axis after nonlinear compression, and the corresponding conventional time interval is determined;The magnetic field decay voltage signal falling into the conventional time interval is carried out smoothing filter processing, and the filtered pulse eddy current detection signal is obtained.The application makes the filtering process match the time characteristics of the magnetic field decay signal, improves the stability of signal processing, and is beneficial to subsequent wall thickness or state evaluation.

The utility model discloses a recoverable medicine-carrying stent with a keel, which comprises a self-expanding stent, the self-expanding stent can be actively or passively expanded and compressed along the radial direction of the self-expanding stent, medicine is coated on the self-expanding stent, the self-expanding stent comprises a bare stent and the keel, the keel is in the shape of a rod and is connected onto the bare stent, and the keel is connected onto the bare stent. The length direction of the keel is parallel to the length direction of the bare support. The bare stent is of a porous structure, has enough radial force, is reliably attached to the blood vessel and meanwhile has good conveying performance, the radial force is enhanced through the regular circulation design of the net-shaped structure, and the deformation resistance of the near end can be enhanced through the keel design.

This application relates to the field of alloy steel technology, specifically disclosing an ultra-high strength cast steel base for a high-speed railway permanent magnet traction motor and its preparation method. The ultra-high strength cast steel base for a high-speed railway permanent magnet traction motor is made from a chemical composition comprising the following weight percentages: C 0.15-0.25%, Si 0.2-0.5%, Mn 1.5-2.5%, Cr 0.5-1.25%, Ni 0.3-0.8%, Mo 0.2-0.5%, Al 0.02-0.06%, V 0.05-0.15%, Ti 0.02-0.08%, Nb 0.01-0.05%, P 0.01-0.02%, S 0.005-0.01%, with the balance being Fe. The ultra-high strength cast steel frame for the high-speed railway permanent magnet traction motor of this application achieves ultra-high strength while maintaining excellent plasticity and toughness and extremely high fatigue limit. This allows designers to use thinner and more optimized frame wall thickness while ensuring safety margin, thereby directly achieving the goal of lightweighting and enabling it to cope with the extreme vibration conditions of high-frequency and high-stress cycles of high-speed railway traction motors.

This invention provides a flexible gear and a harmonic reducer having the same. The flexible gear has a cylindrical structure and includes a transmission part. Along the axial direction of the transmission part, the inner peripheral wall of the transmission part has a segmented structure, and the segmented structure includes at least a first shaft segment, a second shaft segment, and a third shaft segment connected in sequence. The average wall thickness of the transmission part at the second shaft segment is not only greater than the average wall thickness of the transmission part at the first shaft segment but also greater than the average wall thickness of the transmission part at the third shaft segment. The outer peripheral wall of the transmission part has external teeth. The first and third shaft segments have unequal inner diameter structures, while the second shaft segment has a constant inner diameter structure. Along the direction from the first shaft segment to the third shaft segment, the inner diameter of the first shaft segment gradually decreases, and the inner diameter of the third shaft segment gradually increases, making it easier for the outer ring of the flexible bearing to be pressed into the inner side of the second shaft segment, and the outer ring of the flexible bearing is interference-fitted with the second shaft segment. This increases the wall thickness of the transmission part at the external teeth, improves the load-bearing strength of the external teeth, and solves the problem of easy cracking of the side wall of the transmission part at the external teeth.

The invention relates to a cast-iron bridge of a disc brake, comprising two through-holes (4) which are connected to one another by means of a bridge body (1) and which are used to receive in each case one actuating spindle, a parting gap (3b) being formed at a distance from an outer edge (2) of the bridge body (1) in dependence on the production, said parting gap defining a shaped slope, characterized in that the outer edge (2) of the bridge body (1) is provided with a plurality of through-holes (4) which are connected to one another by means of the two through-holes (4). The parting seam (3b) extends parallel to the course of the arranged outer edge (2) of the bridge body (1).