47results about How to "Avoid structural impact" patented technology

The invention relates to a hydrophilization modification method of a polyolefin hollow fiber ultrafiltration membrane, especially relates to a method using dopamine or dopamine derivatives for forming a hydrophilic modification layer on the polyolefin hollow fiber ultrafiltration membrane surface and in membrane holes. The method avoids the influence of polyolefin material structure, can effectively maintain the structural and mechanical properties of the polyolefin membrane, and overcomes the shortcomings that modification in the membrane holes cannot be achieved by irradiation grafting and plasma surface grafting technology. According to the method, an ultrathin poly dopamine or dopamine derivative hydrophilic modification layer prepared by the method can be combined firmly with a polyolefin hollow fiber ultrafiltration membrane material may not be lost in the use process, the modified membrane is stable and reliable in properties, and has good application prospects in water treatment, petrochemical, pharmaceutical, biological, energy and other areas.

The invention discloses a 3D quantum well CMOS integrated device and a manufacturing method thereof, relates to the technical field of microelectronics, and mainly solves the problem of low speed of the existing 3D integrated circuits. The proposal is that an SSOI substrate and an SSGOI substrate are employed to construct two active layers of a new 3D integrated device; wherein, the lower active layer is the SSOI substrate and is made into strained Si nMOSFET by utilizing the characteristic of high electron mobility of a strained Si material in the SSOI substrate; the upper active layer is the SSGOI substrate and is made into strained SiGe quantum well channel pMOSFET by utilizing the characteristic of high hole mobility of a strained SiGe material in the SSGOI substrate; the upper active layer and the lower active layer form a 3D active layer structure by a bonding process, and are connected by an interconnection line to form the 3D quantum well CMOS integrated device with a conducting channel of 65nm to 130nm. Compared with the existing 3D integrated devices, the 3D quantum well CMOS integrated device manufactured by the manufacturing method has the advantages of high speed and good performance.

The invention discloses a riser cutting method for a high-strength steel casting. The riser cutting method for the high-strength steel casting comprises the following steps: performing high-temperature mould dismantling, preserving temperature and performing primary cutting, performing high-temperature annealing, preserving temperature and performing secondary cutting, and performing rough cleaning. According to the method, twice cutting is adopted; a natural gas cutting torch is adopted for cutting when the primary cutting is performed; the temperature of a cutting part is high, and the temperature of a steel casting body is low, so that the temperature difference between the cutting part and the surface of the steel casting body is great, and a root part of 50 mm is reserved in the primary cutting to prevent the structure of the steel casting from being influenced by high-temperature cutting; even though part stress cracks are generated by the high-temperature cutting, the stress cracks can exist in the root part and cannot exist in the steel casting body.

The invention discloses a concrete building block enclosing wall and an assembly construction method, relates to an enclosing wall and a construction method, in particular to the concrete building block enclosing wall and the assembly construction method. In order to solve the problems that in site construction, construction strength is high, a construction period is long and construction quality is difficult to guarantee, the concrete building block enclosing wall comprises a plurality of wall units which are sequentially arranged into the enclosing wall, wherein each wall unit comprises an enclosing wall section and two wall piers; the two ends of the enclosing wall section are connected with one wall pier respectively; the enclosing wall section and the two wall piers form an I-shaped wall unit; and a separating seam is formed between wall piers of adjacent two wall units. The concrete building block enclosing wall belongs to the field of mechanical construction.

The invention relates to the technical field of concrete strength detection, in particular to concrete strength detection equipment for post-disaster house safety identification. The concrete strengthdetection equipment comprises a bottom plate, wherein universal wheels are arranged on the bottom plate, the bottom plate is provided with a stable structure, a lifting structure and a brake structure, the lifting structure comprises a first driving motor, an n-shaped frame, a fixed pulley, a sliding plate and a steel rope, the first driving motor is provided with a winding roller connected withthe steel rope, the n-shaped frame is provided with the fixed pulley, the steel rope is provided with the sliding plate, the sliding plate is provided with a rotating structure, the rotating structurecomprises a third driving motor and a second L-shaped supporting plate, the second L-shaped supporting plate is connected with the sliding plate, the second L-shaped supporting plate is provided withthe third driving motor, the third driving motor is provided with a rotating rod, the rotating rod is provided with a connecting circular plate, the connecting circular plate is provided with a firstL-shaped supporting plate, the first L-shaped supporting plate is provided with an adjusting structure, the adjusting structure is connected with an electric push rod and a supporting plate, and theelectric push rod is provided with a resiliometer. According to the concrete strength detection equipment, the height adjusting range of the resiliometer is wider, and the resiliometer is convenient to use when positions with different heights are detected.

The invention discloses a steel structure plant with a heat preservation function, and belongs to the technical field of steel structure plants. The steel structure plant comprises a roof structure, a steel truss and a wall stand column, the steel structure plant adopts a vertical lock seam roof system and is formed by connecting a roof structure and a roof beam through a Z-shaped wingceltis strip, the roof structure comprises a steel bearing plate, and the steel bearing plate is installed on a roof purline; and a rock wool board heat preservation layer is laid on the steel bearing plate, a waterproof coiled material is laid on the rock wool board heat preservation layer, the rock wool board heat preservation layer and the waterproof coiled material are connected to the steel bearing plate through rivets, and a heat preservation system is arranged on the inner side of the wall stand column. A heat preservation system is arranged on the inner side of the wall stand column, the rock wool board heat preservation layer, the waterproof coiled material and the heat preservation system are arranged, and various materials are mutually combined to further improve the waterproof and heat-insulating properties of the steel structure plant and improve the use efficiency of the steel structure plant.

The invention discloses a two-stage inspection auxiliary device, comprising a front rod body and a rear rod body which are detachably and coaxially connected in sequence, wherein the front end of the front rod body is provided with a detection terminal. In a assembly and use process, the detection terminal can be stretched into a relatively narrow workspace or a higher workspace by holding the front rod body and the rear rod body by a worker, meanwhile rod body lengths which can be operated by the worker can be flexibly adjusted according to the different demands of actual working conditions by disassembling or assembling the rear rod body and the front rod body, so that demands of use for inspection operations of multiple working conditions under high strength can be met; the two-stage inspection auxiliary device is simple in operation, safe and reliable in operation process, and high in work efficiency.

The invention discloses anti-seepage drainage structure and a construction method thereof. The anti-seepage drainage structure comprises a building bottom plate, an anti-seepage frame is fixedly connected to the upper end face of the building bottom plate, a water collecting caulking groove is formed in the middle of the anti-seepage frame in an embedded mode, and a supporting frame is fixedly connected to the upper end face of the water collecting caulking groove; a partition plate covers the upper end face of the supporting frame, and the supporting frame and the partition plate are located in the anti-seepage frame; the upper part of a gap between the partition plate and the anti-seepage frame is filled with a structural layer, the upper end face of the structural layer is parallel to the upper end face of the anti-seepage frame, and the upper end face of the structural layer is coated with a waterproof layer; and a decorative layer is mounted on the upper end face of the waterproof layer, the waterproof layer is sprayed to the inner wall of the anti-seepage frame and the inner wall of the water collecting caulking groove, an indication belt is slidably connected into the anti-seepage frame, the indication belt is attached to the water collecting caulking groove, and the indication belt is used for detecting moisture in the water collecting caulking groove.

The invention discloses a kettle mechanical seal applied to the field of mechanical sealing. The kettle mechanical seal comprises a shaft sleeve, a dynamic ring assembly, a bottom flange and a static ring assembly which take the axis of a rotating shaft as a mounting axis, wherein the dynamic ring assembly is connected to the outer surface of the shaft sleeve, the bottom flange is connected to one end of the dynamic ring assembly, the static ring assembly comprises a dynamic ring connecting portion and a flange connecting portion, the flange connecting portion is fixedly connected to the side, far away from the dynamic ring assembly, of the bottom flange, the dynamic ring connecting portion is used for being in sealing connection with the dynamic ring assembly, a through equipment connecting hole position is formed in the flange connecting portion and the bottom flange, and the equipment connecting hole position is used for realizing connection between the mechanical seal and equipment. Direct connection operation between the mechanical seal structure and the equipment is realized through the equipment connecting hole, applications of equipment flanges are reduced, meanwhile, influence on the static ring structure of the mechanical seal cannot be caused when stress is not uniform in the installation process, so that a guarantee is provided for the overall stability of the mechanical seal.

A motor housing and a motor are provided. The motor housing comprises a housing (1); a spiral water channel (2), an air inlet hole (3) and a communication channel (4) are arranged on the housing (1).The spiral water channel (2) extends spirally along the axial direction of the housing (1), the air inlet hole (3) is arranged on the outer surface of the housing (1) and extends radially of the housing (1), and the communication channel (4) is arranged on the inner peripheral side of the spiral water channel (2) and communicates with the air inlet hole (3). According to the motor housing of the invention, the radial ventilation holes on the motor stator can be effectively ensured to be located on the same plane, the structure is simple, and the machining difficulty is low.

The invention discloses a deep-sea motor based on magnetic coupling transmission and a transmission method. The deep-sea motor based on magnetic coupling transmission comprises a non-magnetic pressure-resistant shell and a magnetic coupling motor; the pressure-resistant shell comprises a body and a cover body, and the magnetic coupling motor comprises a driving assembly and a magnetic coupling output rotor shaft; and a containing cavity is formed in the body, the cover body comprises a cover plate and an inner barrel part protruding towards the inner side face of the cover plate, the magnetic coupling output rotor shaft is installed in the inner barrel part through a bearing, the driving assembly is installed in the containing cavity, the body is covered with the cover plate in a sealed mode, and the magnetic coupling output rotor shaft is in transmission connection with the driving assembly in a magnetic coupling transmission mode. The deep-sea motor based on magnetic coupling transmission does not need a sealing element to carry out dynamic sealing on the output shaft, and the problems of oil leakage and dynamic sealing of the rotary output shaft are solved.

The invention discloses a preparation method of a phosphorus removal material, which is characterized by comprising the steps of 1) putting a graphite powder raw material, grinding balls and a ball milling medium into a ball milling tank according to a mass ratio of 1: (10-20): (4-6), carrying out ball milling on ball milling equipment for 24 hours at a rotating speed of 400-600r/min, then taking out, drying, and sieving with a 200-mesh sieve to obtain graphite powder; 2) dissolving the obtained graphite powder in a copper sulfate solution according to a solid-to-liquid ratio of 1: (5-10), carrying out ultrasonic treatment at 80-100KHz for 4-6 hours, then filtering and washing, carrying out high-temperature calcination on the obtained solid at the temperature of 800-1000 DEG C for 1-3 hours, and cooling to room temperature after the calcination is ended so as to obtain a solid product; and 3) mixing the obtained solid product with polystyrene and polyvinyl chloride according to a mass ratio of 1: (0.5-1): (0.5-1), carrying out a cross-linking reaction under the action of a catalyst, drying the product after the reaction is finished, and carrying out extrusion molding in a twin-screw extruder to obtain the phosphorus removal material. The material has an obvious removal effect on phosphorus and other pollutants in sewage.

The invention relates to the field of functional oxide film materials. The invention relates to a strain resistance switch, in particular to a high-resolution low-temperature flexible strain resistorswitch and a preparation method thereof. The high-resolution low-temperature flexible strain resistance switch comprises a substrate, a SrTiO3 buffer layer arranged on the surface of the substrate anda La2/3Ca1/3MnO3 film arranged on the surface of the SrTiO3 buffer layer, and the substrate is of a two-dimensional layered structure. The preparation method comprises the following steps that the SrTiO3 buffer layer is prepared on the upper surface of the substrate of the two-dimensional layered structure through laser pulse deposition, the La2/3Ca1/3MnO3 film is prepared on the upper surface ofthe SrTiO3 buffer layer through laser pulse deposition, and the thickness of the substrate of the two-dimensional layered structure is reduced from the lower surface through mechanical stripping, sothat the substrate of the two-dimensional layered structure reaches the preset thickness. The resolution of the high-resolution low-temperature flexible strain resistance switch can reach 105 level, and the high-resolution low-temperature flexible strain resistance switch is simple and practical in flexible operation, is suitable for an ultralow-temperature environment, and has a wide applicationprospect in the fields of flexible miniaturized electronic devices, resistive random access memories and sensors.

The invention discloses a split type junction box. An existing split type junction box cannot be applicable to an environment with a high protection grade. According to the split type junction box disclosed by the invention, a channel of a U-shaped rubber sealing strip coats a first central hole of a box body, and a panel compresses the outer end face of the U-shaped rubber sealing strip; a compression part is arranged in the box body and compresses the inner end face of the U-shaped rubber sealing strip; one screw passes through one combination of each third through hole of the panel, a corresponding second through hole of the U-shaped rubber sealing strip and a corresponding first through hole of the box body, which are aligned; the tail part of each screw is connected with a corresponding blind hole of the compression part; and the U-shaped rubber sealing strip comprises a U-shaped rubber matrix and a metal elastic sheet. Due to adoption of a U-shaped structure of the U-shaped rubber sealing strip and a form of the compression part, the split type junction box disclosed by the invention effectively solves a problem that substances such as water or dust and the like can enter thebox body along with thread gaps of the screws.

The invention discloses a soft-bodied robot used for earthquake ruin rescue and having an alarm function, and relates to the field of soft-bodied robot related techniques. The soft-bodied robot used for earthquake ruin rescue and having the alarm function specifically comprises a first movable vehicle, a hydraulic cylinder and a first soft body moving pipeline. A second movable vehicle is mountedon the outer side of the first movable vehicle. A sliding block is mounted in a sliding groove. The first soft body moving pipeline is fixedly pasted to the upper end of a guide rod. A second soft body moving pipeline is connected to the tail end of the first soft body moving pipeline through injection molding. A gas connecting pipe is mounted at the top end of the first soft body moving pipeline.A rescue contact is connected to the outer wall of a rescue ring through injection molding. According to the soft-bodied robot used for earthquake ruin rescue and having the alarm function, under thedriving effect of the hydraulic cylinder, a hydraulic rod drives a positioning strip to stretch and retreat repeatedly, so that the soft-bodied robot is embedded in earthquake ruins to a certain extent when entering the earthquake ruins and has certain hardness when entering ruined channels, and the soft-bodied robot can smoothly enter the earthquake ruins.