62results about How to "Reduce extrusion stress" patented technology

The invention discloses a shaft-mounted brake disc module for a high-speed train. The module comprises brake discs, a support disc and a disc hub; two sets of brake discs are provided, are coaxially laminated on the disc surfaces on the two sides of the support disc, and are clamped and locked with the support disc through first connecting structures; the brake discs are composite material brake discs with smooth disc surfaces on two sides; heat dissipating structures are arranged on the disc surfaces on the two sides of the support disc, and are laminated with the brake discs to form heat dissipating channels; and a connecting flange is arranged on an inner ring of the support disc, and is fixedly sleeved with the disc hub through a second connecting structure. Compared with a traditionaloverall brake disc, the module has the characteristics of simple structure, reliable connection, high-temperature resistance, convenience to maintain, light weight and good braking effect, reduces the energy consumption in operation and braking of the high-speed train, realizes application of a composite friction material to a high-speed train braking system, and greatly saves the high-speed train company operation and maintenance costs.

The invention relates to the field of gas turbine rotors and discloses a wheel disc spigot locating structure of the gas turbine rotor and the gas turbine rotor. Two wheel discs are axially overlapped, axial bumps are arranged at the opposite head faces of the two wheel discs, axial grooves are formed in the other head faces, and the outer diameters of the axial bumps are in interference fit with the inner diameters of the axial grooves; each axial bump is provided with an interference amount adjusting nick; the interference amount adjusting nick is a circular ring-shaped nick formed in the axial head face of the axial bump. By means of the wheel disc spigot locating structure, the wheel disc of the rotor can use a small interference magnitude when assembling, the device extrusion stress is reduced, the assembly is facilitated, the requirement on fixture is lowered, the rotor fits tightly under a working state, and the gas turbine rotor integrity is guaranteed.

The invention discloses a pipe jacking construction method in a complex terrain environment. A panel type 3.5m large cutter head earth pressure balance pipe jacking heading machine is adopted; cut soil enters a muddy water cabin from gaps of a main cutting edge; soil in the muddy water cabin is broken into mud under the joint action of a stirring bar behind a cutter head and muddy water; and the water and earth pressure of excavation surfaces is balanced by controlling the mud and water pressure and the mud weight of the muddy water cabin, so that the excavation surfaces are always in a stablestate. As for sections with poor soil quality and a large buried depth of pipelines, or sections located in a prosperous region with buildings (structures) or traffic trunks above and strict restrictions on displacement and groundwater by surrounding environments, the large-diameter earth pressure balance pipe jacking method is easy and safety in construction, high in quality, low in investment and short in construction period, extrusion of surrounding pipelines and settlement of the ground are effectively controlled, and smooth operation of ground transportation is ensured while important underground pipelines are protected during construction.

The invention discloses an ampoule splitter which is a manual-operation type or full-automatic type ampoule splitter. The ampoule splitter comprises a bottle bubble clamp, a positioning frame and a bottle body frame and is characterized in that the upper part of the positioning frame is provided with the bottle bubble clamp used for clamping an ampoule bottle bubble and splitting the ampoule bottle bubble through a lever, and the bottle bubble clamp is formed by crosswise and movably connecting an upper clamp body and a lower clamp body through a clamp pin shaft. The lower part of the positioning frame is provided with the bottle body frame used for positioning and clamping the ampoule bottle body, and the bottle body frame comprise a connecting plate, a bottle neck lower force arm and a bottle body force arm. The positioning frame is formed by assembling the bottle bubble clamp and the bottle body frame together through double shafts in a linkage way, and the bottle bubble clamp is movably connected with the bottle body frame through the positioning frame. By using the ampoule splitter of the invention, fine glass fragments cannot be generated, the phenomena of hands injuring and medicinal liquid spilling are prevented, the table type or full-automatic type ampoule splitter can be used for splitting two or three ampoule bottles at the same time. The ampoule splitter has the advantages of convenient and rapid operation and meets the professional requirements of medical treatment.

The invention belongs to the technical field of pipeline fixing equipment and particularly relates to a crude oil pipeline conveying and fixing device. A lifting mechanism composed of a first fixing block, a second fixing block, a first supporting rod and a second supporting rod is installed on the crude oil pipeline conveying and fixing device. The lifting mechanism is pushed to be lifted through a thread rod. The height of a connecting base can be adjusted, thus the height of fixing the pipeline can be adjusted, a worker can adjust the pipeline to the proper height, installation and butt joint of the pipeline are facilitated, adjustability of the device is high, the device can be popularized beneficially, the device is provided with a first elastic baffle, a first spring, a second elastic baffle and a second spring, by means of the elastic effect of the first spring and the second spring, when the crude oil pipeline generates thermal expansion, the crude oil pipeline has certain expanding space in the device, and extruding stress borne by the pipeline can be reduced.

The invention discloses a method for conducting magneto-rheological thinning and polishing on an InP-based RFIC wafer. The method comprises the InP-based RFIC wafer and a UV film bond with each other, wherein one surface, needing to be polished, of the InP-based RFIC wafer is vertically soaked in an oil-based polishing solution downwards, and magneto-rheological thinning and polishing are conducted; the polished InP-based RFIC wafer is cleaned; the InP-based RFIC wafer is separated from the UV film. By the magneto-rheological polishing method, extrusion stress on the InP-based RFIC wafer is reduced in a polishing process, and physical damage is greatly reduced. Under the action of a magnetic field, the polishing solution is high in fluid viscosity and good in elasticity, and is tightly attached to the InP-based RFIC wafer, machining precision distortion caused by deformation errors of a polishing disk in the conventional CMP process is avoided, and a very good polishing effect on the InP-based RFIC wafer is formed. The whole magneto-rheological process is stable, speed is high, controllability is good, multiplicity is high, and no dust pollution is caused. By means of polishing, the thickness of a substrate is 20 microns finally, and the surface Ra is less than 2nm.

A floating main-groove contains steel shell and operating layer cast material lying on the inboard of main-groove. Operating layer cast material is contacted with melted iron while steel shell is used to support the main-groove, and steel shell is separated from blast-furnace furnace wall, iron notch and slag hole, also there is a floating layer between steel shell and supporting ground. The main-groove steel shell can improve the safety, reliability and maintainability of main-groove and all its fireproof material backing, and can avoid many defects and problems appearing in traditional main-groove design.

The invention provides an ultraviolet curing heat-conducting adhesive tape, and a preparation method and application thereof. The ultraviolet curing heat-conducting adhesive tape is prepared from, by weight, 5 to 15 parts of light-cured resin, 5 to 10 parts of polyacrylate, 60 to 80 parts of a filler, 5 to 10 parts of an acrylate active monomer, 3 to 8 parts of a photoinitiator, 0.5 to 3 parts of a coupling agent and 0.3 to 1 part of a leveling agent. The invention also provides a preparation method of the heat-conducting adhesive tape. According to the heat-conducting adhesive tape, the manual laminating process of the heat-conducting adhesive tape can be omitted, automatic dispensing is achieved, and the production efficiency is improved.

The invention discloses a ceramic ball core for a ball valve. The ceramic ball core comprises a ball core body, a ball core through hole and a valve stem hole, wherein the ratio a of the outer diameter of the ball core body to the diameter of the ball core through hole is more than or equal to 1.8. The ceramic ball core provided by the invention breaks through the conventional ratio concept of the outer diameter of the ball core body to the diameter of the ball core through hole, and has the characteristics of reliable sealing, light torque, high corrosion and wear resistance, long service life and high stability.

The invention discloses a hot-rolled profile steel door hinge device for a container. The hot-rolled profile steel door hinge device comprises a base, slots, a container body, lifting lugs and a door plank. The device provided by the invention is improved on the structure of a hinge mechanism and has the following advantages: firstly, a uniform honeycomb-shaped connecting structure is arranged at a welding position, and the fastening degree of the connection between the base and the container body and the connection between a chain plate and the door plank can be improved by utilizing the characteristic that the hexagonal honeycomb-shaped structure is stable, so that the possibility that a welding part falls off is reduced under the condition of long-term rotation; secondly, due to the formation of a groove and the step-shaped characteristic of the groove, the dead weight of the chain plate can be reduced firstly, and the extrusion stress of the dead weight on a connecting part is reduced; thirdly, the rigidity of the chain plate is improved due to the formation of the groove; and in addition, the structural layers of the chain plate are increased due to the step-shaped transition of the groove, and stress transmission can be dispersed through inclined planes in steps, so that the purpose of improving the strength of the chain plate is achieved.

The invention provides a two-gear gear speed reducing box used for a top driving well drilling device. The two-gear gear speed reducing box comprises a box body and mechanisms arranged in the box body, wherein each input mechanism comprises an input shaft and a grade-I low-speed gear driving gear and a grade-I high-speed gear driving gear which sleeve the periphery of the input shaft; each middle transmission mechanism comprises a middle shaft, and a grade-I low-speed gear driven gear, a grade-I high-speed gear driven gear and a grade-II driving gear which sleeve the middle shaft; an output mechanism comprises an output shaft and a grade-II driven gear which sleeves the output shaft; each speed changing mechanism comprises a sliding sleeve sleeving the input shaft; the sliding sleeves are mounted among the peripheries of the input shafts, and the inner walls of central holes of the grade-I low-speed gear driving gears and the grade-I high-speed gear driving gears respectively, slide along the input shafts, are matched with the inner walls of the central holes of the grade-I low-speed gear driving gears and the grade-I high-speed gear driving gears, and drive the grade-I low-speed gear driven gear pair and the grade-I high-speed gear driven gear pair to rotate. Compared with the prior art, the rotary speed output range can be improved by more than 2-3 times.

The invention relates to a screw bolt fixing mode wheel house installing structure, which comprises a wheel house body, fixing screw bolts, a wheel house cover plate and a transition support frame, wherein at least three installing holes are formed in the center position of the wheel house body, a wheel house cover is fixedly arranged in the center part of the wheel house body, the transition support frame comprises a support frame body and three convex outer edges outwards extending from the support frame body, a screw bolt hole is formed in each outer edge, at least three installing holes are formed in the support frame body, the installing holes formed in the support frame body are matched with the installing holes of the wheel house body and are fixed through the fixing screw bolts, and the screw bolt holes formed in the convex outer edges of the support frame body are fixed to wheel screw bolts.

The invention belongs to the technical field of dewaxing devices and particularlyspecifically relates to an edible oil dewaxing device. The edible oil dewaxing device comprises a mixing device, a crystallization device, a filtering device, an oil pump and an oil storage tank; the mixing device comprises a heating tank, a feeding hopper, a diatomite spraying pipe and oil spraying pipes; the feedinghopper is arranged in the heating tank; the diatomite spraying pipe is arranged at the upper end of the feeding hopper, and the oil spraying pipes are arranged on the two sides of the diatomite spraying pipe; the crystallization device comprises a crystallization box, an oil inlet, an oil outlet, a cold water inlet, a cold water outlet, spiral pipes and a stirring module; the oil inlet is connected with a flow-dividing hose, the oil outlet is connected with the flow-dividing hose, and the spiral pipes are connected to the flow-dividing hose; and the stirring module is arranged below the spiral pipe and comprises a planetary gear system, pushing plates and an S-shaped rotating shaft. According to the edible oil dewaxing device, the heating tank heats a mixture in the feeding hopper, so that mixing of edible oil and diatomite is accelerated, the dewaxing effect in subsequent work is improved, and the dewaxing quality of the edible oil is improved.

The invention provides a locking device for a corrugated board box covering machine. The locking device comprises a paper blocking board, a paper beating board and a frame and is characterized in that: a locking strip is fixed on the frame; two locking blocks which are symmetrically arranged relative to the locking strip are fixed on the paper blocking board; each locking block is connected with an oscillating mechanism which is arranged on the same side as that of the locking strip respectively; and two oscillating mechanisms drive the two locking blocks to extrude the locking strip for locking. The locking device has a simple and compact structure, can effectively lock a paper blocking mechanism, enhances the stability of a machine and prolongs the service life of the machine.

The application discloses a method for overlapping sliced battery slices, comprising the step of successively stacking a solder strip and a second sliced battery slice on a first sliced battery slicesuch that the orthographic projection the first sliced battery slice and the orthographic projection of the second sliced battery slice on a plane where the solder strip is located have an overlappingarea, wherein the solder strip is located between the first sliced battery slice and the second sliced battery slice, the non-cut surface of the first sliced battery slice and the cut surface of thesecond sliced battery slice are located in the overlapping area, and the negative electrode of the first sliced battery slice and the negative electrode of the second sliced battery slice are facing upward. The method can reduce the possibility of deformation and cracking of the sliced battery slices during a lamination process, and reduce the cracking rate of the sliced battery slices.

The invention relates to a cold-drawing inner mold for eliminating inner spiral ribbing of a steel pipe. The cold-drawing inner mold comprises an inner mold body; a first conical wall reduction section, a first cylindrical uniform-wall section, a transition section, a second conical wall reduction section and a second cylindrical uniform-wall section which are sequentially arranged in front and rear of the outer surface of the inner mold body; the conical angle alpha of the first conical wall reduction section is 2-10 degrees, the conical angle beta of the second conical wall reduction sectionis 8-15 degrees; the conical angle alpha of the first conical wall reduction section is smaller than the conical angle beta of the second conical wall reduction section; a plurality of planes are uniformly distributed on the circumference of the outer circle surface of the first cylindrical uniform-wall section in a milled mode; and the milling depth a of each plane is 0.1-0.5mm. The cold-drawinginner mold has the advantage that the inner spiral ribbing of the steel pipe can be eliminated.

The invention discloses an end face tooth part connection power transmission device which comprises an outer ring, an inner ring, a universal joint and a locking bolt, a first roller path is arranged between the outer ring and the inner ring, a first roller is arranged in the first roller path, an embedded ring is further arranged on the inner ring in a matched mode, a second roller path is formed between the embedded ring and the outer ring, and a second roller path is arranged in the second roller path. A second roller is arranged in the second roller path, a hemming flange abutting against the universal joint is arranged at the position, corresponding to the embedded ring, of the edge of the inner ring, and straight teeth are distributed on the abutting face of the hemming flange and the universal joint in the circumferential direction. The universal joint and the hemming flange form torque transmission between the inner ring and the universal joint through mutual meshing of the straight teeth, the head portion of the locking bolt abuts against the side wall of the inner ring, and the rod portion of the locking bolt penetrates through an inner hole of the inner ring and then is in threaded fit with the universal joint. The power transmission device is compact in structure, lower in overall weight, high in installation precision and stable in power transmission.