12results about How to "Prevent creep" patented technology

This invention belongs to the technical field of EPDM rubber materials, specifically relating to a high-temperature resistant steel wire reinforced hydraulic rubber hose inner rubber and its preparation method. The preparation method of the high-temperature resistant steel wire reinforced hydraulic rubber hose inner rubber of this invention includes the following steps: S1, firstly, EPDM rubber is epoxidized using hydrogen peroxide solution to obtain epoxidized EPDM rubber, and then the epoxidized EPDM rubber is modified using 4-(trimethoxysilyl)aniline to obtain modified EPDM rubber; S2, the modified EPDM rubber and silicone resin are added to a mixer for the first stage of mixing, then filler, mica powder, plasticizer, zinc oxide, sulfur, accelerator, and antioxidant are added for the second stage of mixing, followed by discharge of the rubber to obtain the high-temperature resistant steel wire reinforced hydraulic rubber hose inner rubber. This invention, through the synergistic effect of its components, ensures both good heat resistance and significantly improves wear resistance.

The utility model discloses a composite gradient yielding lining structure for a tunnel, and relates to the technical field of yielding lining structures, the composite gradient yielding lining structure comprises a main supporting soft support, a supporting assembly is arranged below the main supporting soft support, the supporting assembly comprises two fixed inner supporting frames, side fixed supporting frames are arranged on the surfaces of one sides of the two fixed inner supporting frames, and the side fixed supporting frames are arranged on the surfaces of the other sides of the two fixed inner supporting frames. Limiting convex blocks are arranged on the surfaces of one sides of the side fixing supporting frames, a center movable frame is further arranged on the bottom face of the main supporting soft support, connecting shaft bodies are arranged at the two ends of the center movable frame, and the other sides of the two connecting shaft bodies are connected with one ends of fixing inner supporting frames correspondingly; according to the tunnel lining structure, the supporting assemblies are arranged, so that elastic degradation and creep deformation caused by a single yielding layer in a long-term high-pressure environment are avoided, and the long-term stability, the maintenance efficiency and the safety of the tunnel lining structure are remarkably improved.

This utility model discloses a novel brushless motor, including a housing, a rotor winding, a stator winding, a first bearing, a second bearing, a first pressure block, a second pressure block, and a motor shaft. The rotor winding is disposed inside the housing. The stator winding is disposed on the inner side wall of the housing and surrounds the rotor winding, and the stator winding can be connected to an external driver. The first bearing and the second bearing are mounted on the housing and are arranged on both sides of the rotor winding. The first pressure block is welded to the housing and abuts against the outer ring of the first bearing, and the second pressure block is welded to the housing and abuts against the outer ring of the second bearing. The motor shaft passes through the rotor winding, with one end connected to the inner ring of the first bearing and the other end connected to the inner ring of the second bearing. The above structure can effectively prevent the outer ring of the bearing from creeping against the housing during long-term high-speed operation of the motor, reduce wear, reduce noise and vibration, significantly extend the service life of the motor, and improve the overall operating experience.

The utility model relates to a quick charging equipment technical field provides a kind of quick charging interface sealing structure, including the lower cover and upper cover of mutual buckling, lower cover tail portion is equipped with tail plate, upper cover tail portion is equipped with the tail plug of tail plate plug-in cooperation, tail plate and tail plug are all opened a pair of wire hole, wire hole is communicated horn-shaped reverse mould hole, lower cover, upper cover and the glue injection port of upper cover form glue injection chamber, glue solidification forms the mushroom head locking structure of wrapping wire and circuit board, and mushroom head is embedded in the anchoring cavity of reverse mould hole. By abandoning plunger, adopt glue solidification and form the mushroom head locking structure of integral wrapping, completely eliminate the risk of sealing failure caused by uneven cover compression force or tolerance of traditional cable plug, eliminate water vapor / dust penetration.

This utility model relates to the field of battery technology, providing a terminal structure, a top cover assembly, a housing assembly, a single battery cell, and a battery pack. The terminal structure includes a terminal post assembly and a seal. The terminal post assembly includes a main body and a first connecting portion and a second connecting portion spaced apart from each other and arranged around the periphery of the main body. The seal is fitted onto the main body and is located between the first connecting portion and the second connecting portion. One of the first connecting portion and the seal has a first protrusion protruding towards the other, abutting against the other; and / or, one of the second connecting portion and the seal has a second protrusion protruding towards the other, abutting against the other. This prevents the seal from failing due to creep, extending its service life and ensuring the battery's sealing performance during long-cycle use.

This invention provides a dielectric ion exchange membrane, its preparation method, and its application, relating to the field of membrane material preparation technology. The dielectric ion exchange membrane includes a substrate and an ion exchange membrane coated on the surface of the substrate. The ion exchange membrane comprises polyvinyl alcohol, an ion system, a UV-curable monomer, and a photoinitiator. By using UV curing technology, the crosslinking process and solvent evaporation can be precisely controlled during membrane formation, ensuring a smooth membrane surface and avoiding membrane curling caused by uneven shrinkage. The introduction of the UV-curable monomer is to form a crosslinked network under UV irradiation, inhibiting macroscopic structural flow and creep of the ion exchange membrane during film formation and service, improving the mechanical stability of the membrane, and forming a stable crosslinked structure, thereby forming a structurally stable dielectric ion exchange membrane and effectively preventing membrane curling during drying.

The invention discloses a low-pressure-change foamed EPDM (Ethylene-Propylene-Diene Monomer) material as well as a preparation method and a sealing strip thereof, and belongs to the technical field of high polymer materials. According to the material, alkali lignin is subjected to surface modification by adopting a ternary reactive deep eutectic solvent (RDES) composed of choline chloride, a functional hydrogen bond donor HBD-1 and urea; the modified alkali lignin is blended with ethylene propylene diene monomer, carbon black and the like, and HBD-1 is preferably an addition product of DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and GMA (glycidyl methacrylate). The problems that in the prior art, a foamed EPDM material is large in high-temperature compression permanent deformation, poor in low-temperature resistance, standard-exceeding in smell / VOC and the like are solved, and the obtained material has excellent comprehensive performance and can be used for preparing high-performance sealing strips.

The invention relates to the technical field of high-speed cables, in particular to a bending-resistant high-speed cable which comprises a spiral telescopic sheath, a prestress self-adaption mechanism and a rigid transmission wire harness which are sequentially arranged from outside to inside, and the spiral telescopic sheath is of a spiral corrugated pipe structure capable of greatly stretching out and drawing back in the axial direction and bending in the radial direction; the prestress self-adaptive mechanism is used for converting deformation of the spiral telescopic sheath into translation and / or rotation so as to isolate strain; according to the invention, through the unique layered design of flexible outside and stable inside, bending resistance can be realized on the premise that excellent electrical performance is guaranteed, and the cable can be better suitable for harsh application scenes requiring frequent plugging, repeated bending, dynamic swinging or complex three-dimensional wiring.

The utility model relates to the technical field of connecting pieces, discloses a creep-resistant socket-and-spigot type connecting piece of a PPH homopolymerization pipeline for a high-temperature working condition, and solves the problems that the PPH homopolymerization pipeline is easy to creep due to the fact that an existing socket-and-spigot type connecting piece cannot effectively protect a joint of the PPH homopolymerization pipeline under the high-temperature working condition, so that a gap is generated, and leakage is caused. The device comprises a first pipeline, a mounting ring is fixedly mounted on the surface of one end of the first pipeline, a second pipeline is arranged on one side of the mounting ring, four extrusion pads are annularly and fixedly mounted on one side of the second pipeline at equal intervals, a slot is formed in the end, close to the second pipeline, of the first pipeline, and a plug is fixedly mounted at the end, close to the first pipeline, of the second pipeline; the plug is fixedly mounted in the slot; the socket type connecting piece can effectively protect the PPH homopolymerization pipeline joint under the high-temperature working condition, creep deformation of the PPH homopolymerization pipeline joint is avoided, meanwhile, the sealing effect is improved, and medium leakage is avoided.

The invention discloses a continuous pipe layered gas injection process pipe column and a working method thereof. The continuous pipe layered gas injection process pipe column comprises an inner continuous pipe and an outer continuous pipe. The inner continuous pipe is located in the outer continuous pipe, and the outer wall of the inner continuous pipe and the inner wall of the outer continuous pipe are arranged at intervals. An anchor, a first packer, a gas injection valve and a second packer are sequentially arranged on the outer wall, close to the bottom, of the outer continuous pipe from top to bottom, and the bottom of the outer continuous pipe and the bottom of the inner continuous pipe are connected in a sealed mode. An independent layered gas injection channel is formed, the ground flow is adjustable, and a new technical thought is provided for shaft matching of layered gas injection in a gas drive test and improvement of the oil field recovery ratio.

This invention discloses a downhole insertion-type long-lasting isolating production combination tool, relating to the field of long-lasting isolator technology. It includes a central tube, with a fixing block fixed at an equal angle on the outer side of the upper end of the central tube. The fixing block is fixed to a connector, and a sealing mechanism for sealing the production pipe is slidably connected to the inner side of the connector. This downhole insertion-type long-lasting isolating production combination tool employs a cleaning mechanism that converts axial gravity into rotational torque through a combination of spirally distributed rollers. When the tool is lowered, the arc-shaped panel adheres tightly to the pipe wall under the thrust of the airbag. The friction between the spiral rollers (30°-60° rise angle) and the pipe wall generates a tangential component force that causes the entire rotating assembly (ring, arc-shaped panel, scraper) to rotate around the central tube. The scraper rotates accordingly, scraping away the circumferential attachments. This process continues throughout the entire lowering stroke, achieving a pretreatment effect on the well wall of the sealing section, significantly improving the contact quality and working life of the subsequent sealing sleeve and metal slips.

The embodiment of the present application provides a diaphragm and a preparation method thereof, a battery, a battery pack and an electric device. The diaphragm provided by the embodiment of the present application comprises a diaphragm base and an inorganic coating layer arranged on at least part of the surface of the diaphragm base; the diaphragm base comprises a diaphragm substrate and a whisker material dispersed in the diaphragm substrate. The diaphragm of the embodiment of the present application has good elastic modulus and creep recovery rate, and can improve the cycle life and safety performance of the battery.