26results about How to "Reduce shear" patented technology

The invention belongs to the field of roadway support utilization, and particularly relates to a method for improving the bearing capacity of two sides by converting stress of the two sides into surrounding rock of the two sides. The core is that the vertical pressure of the top plate is transferred to the horizontal direction of the two sides, the confining pressure of the two sides is increased, and the bearing capacity of the coal rock mass is increased, so that the bearing capacity of the two sides is improved, the roadway stability is improved, and surrounding rock deformation is controlled. According to the method, U-shaped steel is used as a whole, three-section splicing is adopted, the U-shaped steel support is high in strength and stability and meanwhile has the advantages of being convenient to carry and operate, the junction is connected and fixed through a hoop, the sliding pressure relief effect can be achieved, and the safety of roadway supporting is guaranteed. Anchor cable channel steel is used for reinforcing and stabilizing the support, high-strength slotted steel pipes are driven outside anchor cable drill holes in the two sides to reduce shearing force borne by anchor cables, the support is more stable, the channel steel is arranged in the axial direction of a roadway, point stress of the sides is conveniently changed into face stress, the roadway sides can be stabilized in a larger range, and local point stress concentration is avoided.

The invention relates to water-permeable colored asphalt concrete and a preparation method thereof, and belongs to the technical field of asphalt concrete.The water-permeable colored asphalt concrete is composed of colored modified asphalt and aggregate, and the mass ratio of the colored modified asphalt to the aggregate is (1-2): 10. The colored modified asphalt is composed of road petroleum asphalt, modified calcium carbonate whiskers, modified rubber powder, a composite anti-stripping agent and an inorganic pigment. According to the permeable colored asphalt concrete prepared by the invention, the Marshall stability is 8.39 to 8.91 kN, the compressive strength is 57.9 to 64.5 MPa, the water stability RMS is 97.5 to 98.4 percent, the TSR is 95.2 to 97.0 percent, the porosity is 18.4 to 21.6 percent, and the permeability coefficient is 61 to 70 mm / s.

The utility model discloses a flexible side pile and a photovoltaic support thereof, comprising an anchoring column, one end of which is buried in the ground and the other end of which extends upwards relative to the ground; the deformation support is arranged on the anchoring column and is attached to the top side of the anchoring column; the connecting beam is arranged on the deformation support; the deformation support comprises a core body and a flexible layer wrapping the core body. When the tensile force generated by the heavy object is larger than the tensile force used for stabilization or the tensile force used for stabilization is larger than the tensile force generated by the heavy object, the connecting beam exerts pressure on the deformation support and exerts thrust in the horizontal direction at the same time, so that the deformation support is subjected to shear deformation, and the bottom face and the top face of the deformation support generate horizontal dislocation displacement. An operator can judge whether the horizontal tensile forces borne by the two sides of the connecting beam are equal or not by observing the deformation support, so that the flexible side pile can be adjusted to be in a state of not bearing the horizontal tensile forces during installation, and the stability is improved.

The present invention belongs to the technical field of oil and gas drilling, and specifically relates to an emulsifier for oil-based drilling fluid and a preparation method thereof. The preparation method of an emulsifier for oil-based drilling fluid of the present invention comprises the following steps: S1, subjecting waste oil regenerated fatty acid to amidation reaction with polyethylene polyamine; S2, subjecting the product of the amidation reaction in step S1 to amidation reaction with compound A; the compound A is selected from one or any combination of dicarboxylic acid compounds, polycarboxylic acid compounds, and acid anhydride compounds. The preparation method of the emulsifier for oil-based drilling fluid of the present invention uses waste oil regenerated fatty acid as a basic raw material, has more superior environmental protection and economy, and the prepared emulsifier can improve the rheology of high-density oil-based drilling fluid when used in oil-based drilling fluid, reduce the viscosity and shear force of high-density oil-based drilling fluid, speed up drilling speed, and prevent the occurrence of complicated underground situations such as leakage.

The application discloses a heterogeneous solution ground volumetric distribution stepless adjusting device and a use method, and the device comprises a reciprocating mechanism and a hydraulic reversing mechanism; the hydraulic reversing mechanism comprises a sleeve base and a reversing shaft base, a hydraulic unit is arranged in the sleeve base, a reversing unit is arranged in the reversing shaft base, the hydraulic unit and the reversing unit are connected through an intermittent mechanism, and the reversing shaft base is communicated with the sleeve base; the reciprocating mechanism is connected with the reversing unit, and the reciprocating mechanism leads out an output shaft and is used for connecting a damping device. The volumetric structure is adopted to suck and discharge the heterogeneous solution, the shearing of polymer molecules and particles in the injection liquid in the heterogeneous solution injection process is reduced, the viscosity of the heterogeneous solution is ensured, and low-shearing injection is realized.

The invention discloses an anti-seismic CFRP rib concrete column and a construction method thereof. According to the scheme, the anti-seismic CFRP rib concrete column is composed of concrete, an anti-shear sleeve, an anchoring sleeve, a plurality of CFRP sheet stirrups and a plurality of CFRP woven longitudinal ribs in a matched mode. Wherein the plurality of CFRP sheet-shaped stirrups form a plurality of CFRP sheet-shaped stirrup layers, and the CFRP sheet-shaped stirrups are sequentially distributed at intervals in the extending direction of the concrete column; the two ends of a plurality of CFRP woven longitudinal bars are anchored to the anchoring sleeves respectively, the CFRP woven longitudinal bars are arranged in the CFRP sheet stirrup layers respectively, and each CFRP woven longitudinal bar is fixedly connected with the corresponding CFRP sheet stirrup to form a CFRP rib framework. A shear-resistant sleeve is arranged at the part, corresponding to the plastic hinge area of the concrete column and in contact with the CFRP sheet stirrup, of each CFRP woven longitudinal bar; and the concrete is poured on the CFRP rib framework to form a concrete column. The CFRP reinforced concrete column formed by the scheme is excellent in anti-seismic property, and the problem that an existing CFRP reinforced concrete column is poor in compression resistance and anti-seismic property can be effectively solved.

The present application relates to a kind of foldable garden maintenance pruning device.It solves the problem of single function and low efficiency of pruning tool in prior art.It includes folding connecting rod, folding connecting rod one end is provided with pruning main body, folding connecting rod is slidably provided with sliding drive mechanism for driving pruning main body to open and close, extension saw body is arranged in pruning main body, and extension saw body one end is provided with linkage assembly connected with sliding drive mechanism and linked with sliding drive mechanism, folding connecting rod middle part is provided with folding positioning mechanism.The advantages of the present application are: collection cutting and draw saw are integrated, function is rich, and effectively improve the cutting efficiency, it is convenient to fold and carry, and use flexibility is good.

The invention provides a viscosity reducer as well as a preparation method and application thereof. The invention provides a viscosity reducer which comprises the following raw materials in parts by weight: 10-50 parts of a non-polar component A, 10-60 parts of a polar component B and 30-50 parts of a surfactant C, the non-polar component A is selected from one or more of octane, petroleum ether, dotridecane, octacosane, carbon disulfide, carbon tetrachloride, ethane, cyclohexane, liquid paraffin, ethyl acetate and diethylene glycol monobutyl ether; the polar component B is prepared by reaction of styrene, maleic anhydride and acrylate; the surfactant C is prepared by reacting the polar component B, organic acid and polyamine. According to the viscosity reducer for the oil-based drilling fluid, provided by the invention, the viscosity and the shearing force of the oil-based drilling fluid can be remarkably reduced, the flowability of the oil-based drilling fluid is improved, and particularly, the viscosity and the shearing force of the polluted oil-based drilling fluid can be reduced.

This application relates to a high-efficiency production equipment for polyetheramine-modified epoxy resin coatings, belonging to the technical field of coating production equipment, which includes a mixing tank. This application achieves bidirectional shear mixing by setting up a rotating rod, spiral stirring blades, a rotating cylinder, a C-shaped rotating frame, and a stirring rod, thereby improving the uniformity of coating mixing. During operation, a forward and reverse motor drives the main bevel gear to rotate, and the main bevel gear simultaneously meshes to drive the first and second driven bevel gears to rotate in opposite directions, thus causing the rotating rod and rotating cylinder to rotate in opposite directions: the rotating rod drives the spiral stirring blades to rotate clockwise, pushing the material upwards; the rotating cylinder drives the C-shaped rotating frame and stirring rod to rotate counterclockwise, creating reverse shear on the material. The convection and shearing effects generated by bidirectional mixing can effectively break the agglomeration of high-viscosity raw materials, solving the problem of uneven mixing in traditional unidirectional mixing, and ensuring that the polyetheramine-modified epoxy resin is fully integrated with other components.

This invention relates to the field of alloy cold heading steel production technology, and discloses a pearlitic phase transformation process for alloy cold heading steel that reduces or eliminates annealing. The process includes S1 precise composition design, S2 converter smelting stage, S3 LF refining stage, S4 vacuum treatment stage, S5 continuous casting stage, S6 rolling stage, S7 core controlled cooling stage for pearlitic phase transformation, S8 heat preservation and channel strengthening stage, and S9 process monitoring and closed-loop adjustment. This process achieves sufficient pearlitic phase transformation and significant suppression of harmful phases: by precisely controlling the cooling rate at 0.25-1.0℃ / s in the core controlled cooling stage, combined with heat preservation synergy within the 620-746℃ pearlitic phase transformation range, the pearlitic content of the steel is stably maintained at ≥85%, the bainite content ≤5%, and the martensite content ≤2%, completely solving the problem of excessive hardness caused by excessive harmful phases in traditional processes, and providing core microstructure protection for reducing or eliminating annealing.

This invention discloses a method for disrupting the cell walls of structurally heterogeneous microorganisms based on the synergistic vibration of multi-size media and its application. The method includes the following steps: (1) constructing a composite cell-dispersing media system with multi-size characteristics and filling it into a cell-dispersing tube; (2) injecting the microbial sample to be disrupted into the cell-dispersing tube and oscillating it at a linear velocity of 6-7 m / s for 30-90 seconds at 4-25 ℃; (3) after cell disruption, separating the mixed composite cell-dispersing media system and the solution to obtain a cell-dispersed solution containing intracellular products. The beneficial effects of this invention are: through the synergistic effect of multi-scale shear forces, it significantly improves the lysis efficiency of difficult-to-disrupt pathogens such as Mycobacterium tuberculosis, Cryptococcus, and Aspergillus, effectively protects the nucleic acid integrity of RNA viruses, has high cell disruption uniformity, good RNA protection, can be standardized and adapted to automated platforms, and is suitable for the pretreatment of complex clinical samples.

The invention provides a low-solid-phase strong-inhibition calcium salt drilling fluid. Compared with the prior art, the low-solid-phase strong-inhibition calcium-based drilling fluid provided by the invention has the advantages that carbonate radicals and bicarbonate radicals can be neutralized in an alkaline environment through calcium ions Ca < 2 + >, so that the stability of the rheological property of the drilling fluid is ensured; meanwhile, Ca < 2 + > and clay particles generate an irreversible absorption effect, hydrated calcium silicate is formed on the surfaces of the clay particles, and ion exchange and adsorption both reduce the hydrophilicity and dispersity of the clay particles, so that hydration dispersion of the shale is inhibited, the content of bentonite in the system is low, the content of solid phases is low, the viscosity and the shearing force are relatively low, and the stability of the shale is improved. The drilling fluid has the function of containing a large amount of low-density solid phase capacity, good and stable rheological property of the drilling fluid can be ensured, the drilling fluid has strong inhibition and anti-sloughing functions, and the filter loss can be effectively controlled.

The utility model discloses a charging base station for an intelligent mower. The charging base station solves the problem that an existing charging base station cannot adapt to intelligent mowers of different heights. The charging base station for the intelligent mower comprises a machine shell, a charging assembly and a charging terminal, the charging assembly is arranged in the machine shell, the charging terminal is electrically connected with the charging assembly, the machine shell comprises a hollow suspension part, the charging terminal is installed in the suspension part, and the charging assembly is electrically connected with the charging terminal. The charging terminal comprises an end part and a limiting part, a part of the end part downwards penetrates through the suspension part and floats relative to the suspension part, and the limiting part limits the charging terminal to be downwards separated from the suspension part. The utility model further provides an intelligent mowing system which comprises the intelligent mowing machine and the charging base station in the technical scheme, a charging piece is arranged at the upper end of the intelligent mowing machine, and the height of the charging piece is gradually changed in the advancing direction of the intelligent mowing machine.

The application provides a wave-shaped distribution channel system for a super-multi-mode cavity product, which has an inwardly concave wave-shaped flow channel wall, and the two sides of the wave-shaped flow channel wall are oppositely inclined to the corresponding connected vertical flow channels. Compared with the prior art, the angle between the horizontal flow channel and the vertical flow channel is controlled through the wave-shaped structure of the wave-shaped flow channel wall, so that the shear on the molten glue is reduced, and the size of the shear can be controlled through the angle, thereby facilitating the regulation of the generated backflow, and making the temperature and pressure of the molten glue more uniform. Moreover, the inner surface shape of the wave-shaped flow channel wall is a smooth transition surface, which can further reduce the shear.

The present application relates to the technical field of polymer processing equipment, and in particular to a modified plastic processing extrusion device, comprising a fixed plate, a barrel connected to the fixed plate, and an extrusion nozzle on the side of the barrel away from the fixed plate; a frame, the frame is connected to the fixed plate; a conical centrifugal cylinder with a feed inlet, the conical centrifugal cylinder is located in an installation cavity, and the conical centrifugal cylinder is rotatably connected to the fixed plate and the frame; a conical follower core, the conical follower core is coaxially arranged in the inner cavity of the conical centrifugal cylinder, and the conical follower core reciprocates along the axial direction of the barrel; an extrusion column head, the extrusion column head is coaxially connected to the conical follower core, the extrusion column head can extend into and be slidably connected to the inner wall of the barrel; a material heating unit, the material heating unit is connected to the conical centrifugal cylinder and / or the conical follower core; the present application has the effect of reducing the possibility of melt fracture of the material and reducing the time the material stays in the barrel to improve the molding quality of the product.

The utility model provides an intake and exhaust silencer for a high-speed fan. The intake and exhaust silencer comprises an outer steel plate, four sides of the outer steel plate are encircled and spliced into a rectangular square tube, a fixed shutter is mounted at an air inlet end of the rectangular square tube, a movable shutter is mounted at an air outlet end of the rectangular square tube, and a plurality of inclined sound insulation plates are fixed in the rectangular square tube in parallel; and on the projection of the end part of the rectangular square tube, the sound insulation plate completely covers the inner cavity space of the rectangular square tube. The structure that the inclined sound insulation plates are fixed side by side is adopted, the airflow shearing capacity is greatly reduced and the multi-stage noise reduction effect is achieved based on the flow guiding and bending effects of the sound insulation plates in a very small space, and therefore the noise reduction effect of a small-size silencer is greatly improved, and structural redundancy is effectively avoided; the noise reduction device is especially suitable for industrial production scenes with limited volume and high requirements on noise reduction effect.

The invention relates to the field of sand blasting workpiece conveying devices, in particular to a sand blasting machining line workpiece translation conveying device which comprises a feeding conveying device arranged at the feeding end of a sand blasting machine and a discharging conveying device arranged at the discharging end of the sand blasting machine. The feeding conveying device and the discharging conveying device each comprise a translation conveyor, a double-trolley translation machine and a material moving table used for bearing workpieces. The double-trolley translation machine is used for controlling the material moving table to move in or out of the translation conveyor, the double-trolley translation machine comprises two material moving trolleys and a linear driving assembly used for controlling the material moving trolleys to move, and each material moving trolley is provided with a lifting platform capable of moving in the vertical direction; each material moving trolley is provided with a lifting control mechanism used for driving the lifting platform to ascend and descend. According to the sand blasting machine, the function that multiple workpieces are fed and discharged at the feeding end and the discharging end of the sand blasting machine at the same time is achieved, and the problem that after traditional equipment completes material transportation, manual assistance is still needed for material transfer is solved.

The present invention discloses a high-density drilling fluid desanding and desilting cleaner, which uses a vertical drum processor to perform primary separation of large-particle rock cuttings larger than 40 μm in the high-density drilling fluid, and a desilting cyclone performs a second solid-liquid phase separation on the drilling fluid, separating rock cuttings and barite larger than 20 μm from the drilling fluid, and a cleaning vibrating screen removes the large-particle rock cuttings and barite separated for the primary separation, as well as rock cuttings larger than 20 μm in the second-separated rock cuttings and barite, and recycles the barite and drilling fluid, thereby achieving the removal of solid phases larger than 20 μm in the high-density drilling fluid. In the vertical drum processor, the high-density drilling fluid can reduce viscosity and shear force under the high-speed stirring of the spiral blades, and the large-particle solid phase is discharged from the slag discharge port at the lower part of the side wall of the vertical drum under the force of its own gravity and the push of the spiral blades of the vertical spiral pusher, thereby achieving the solid-liquid separation effect and ensuring the discharge volume; the present invention also discloses a vertical drum processor.

The invention discloses an anti-hemolysis hydrogel coating as well as a preparation method and application thereof, a micron-sized porous structure and a hydrophilic silane bonding layer are constructed on the surfaces of various base materials, and the adhesive force of the hydrogel coating and the base materials is remarkably enhanced through a physical topology winding and covalent bond connection method. Through the methods of spraying, dipping, coating, mold forming and the like, the device can be suitable for blood contact medical instruments with different shapes and materials; by adjusting the formula and preparation process parameters of the hydrogel, the special requirements of different medical instruments can be met, and the hydrogel has wide applicability and good expandability. Through optimized materials and design, the anti-hemolysis hydrogel coating disclosed by the invention has remarkable technical advantages in the aspects of reducing hemolysis risk, improving biocompatibility, simplifying the structure of medical equipment and the like.

The application relates to the technical field of deformation joints, and provides a roof deformation joint connecting structure applied to a deformation joint on a roof, which comprises step steps, outer cover plates and inner support assemblies; two step steps are arranged on the two sides of the roof respectively, each step step is provided with a mounting seat at the top, and the mounting seat is arranged along the length direction of the step step; the outer cover plate is in an arc shape, the outer cover plate is arranged above the roof to cover the deformation joint, and two mounting seats are sealingly connected to the two sides of the outer cover plate in the width direction; the inner support assembly is arranged on the inner side of the outer cover plate, the upper part of the inner support assembly is attached to the inner surface of the outer cover plate and plays a role of supporting and strengthening the outer cover plate. The roof deformation joint connecting structure has the advantages of stronger strength, higher bearing capacity and better waterproof effect.

The utility model relates to a concrete formwork supporting structure which comprises a plurality of check blocks used for separating a concrete pavement from a vertical shaft. The multiple stop blocks are arranged around the vertical shaft, and the adjacent stop blocks abut against each other. The side, away from the vertical shaft, of the check block is an abutting face, and the abutting face abuts against the concrete pavement. According to the application, a circle of check blocks are arranged on the periphery of the vertical shaft, so that the check blocks are utilized to resist lateral pressure of concrete in the concrete pavement towards the vertical shaft; therefore, the effects of lateral pressure, shearing force and the like on the vertical shaft structure are reduced; when a concrete pavement is laid, the situation that the vertical shaft is damaged is reduced.

The utility model discloses a flexible printed circuit (FPC) connector capable of reducing friction of a graphene flat cable, which relates to the technical field of connectors and comprises a connector shell, a connector upper cover is rotatably arranged on the connector shell, and a terminal body is butted between the connector shell and the connector upper cover. And a butt joint flexible flat cable is arranged between the connector shell and the connector upper cover. According to the FPC connector capable of reducing friction of the graphene flat cable, when a butt joint flexible flat cable needs to be plugged and unplugged, the connector upper cover is turned upwards, the shaft end of the connector upper cover rotates, the protruding part of the shaft end does not abut against the abutting block, at the moment, the upper push plate pops up upwards under the driving of the elastic acting force of the auxiliary spring, and then the flexible flat cable is plugged and unplugged. The butt-joint flexible flat cable is arranged on the plastic soft shell and abuts against the butt-joint flexible flat cable, so that the butt-joint flexible flat cable slightly moves upwards, contact between the butt-joint flexible flat cable moving upwards and the connector shell can be reduced, friction between the butt-joint flexible flat cable and the plastic soft shell is reduced, and graphene on the lower surface of the butt-joint flexible flat cable is further prevented from falling off.

The utility model relates to a mast technical field especially relates to a kind of reinforcing mast mechanism.Its technical scheme includes fixed base and rigging, and the rigging includes support plate, the side portion of support plate is rotatably connected with the winding roller with anti-drop plate, fixedly installed with pull cord on the winding roller, the outer wall of mast body and located the upper positioning sleeve of lower positioning sleeve is equipped with upper positioning sleeve, and the end of pull cord is fixedly connected with upper positioning sleeve;Support plate is fixedly installed at the top of fixed base.The utility model is by winding roller using pull cord to exert tension on upper positioning sleeve from four directions, to support the position of fixed mast body, additional upper positioning sleeve makes it be located at two-thirds height of mast body, originally concentrated in the load of mast body near bottom is dispersed to upper positioning sleeve, lower positioning sleeve and upper positioning sleeve share stress, greatly reduce bending moment, shear, avoid local excessive stress, lead to mast body bending.

The utility model relates to fish ball forming machine technical field especially fish ball forming machine unloading device, the utility model discloses including through screw can dismantle and set on fish ball machine and along the vertical setting of up and down height direction's stuffing hopper, the drive rod of rotation and set on the upper portion of stuffing hopper, the component of driving away stuffing of can dismantle and set on the lower extreme of drive rod and set on drive rod and be used for driving drive rod axial rotation's control component. The device is aimed at reducing the peripheral stuffing slip as far as possible.

The application discloses a filling metering device, which comprises a discharging mechanism, a metering assembly, a blanking channel and a discharging channel. The metering assembly is arranged in the discharging mechanism, the discharging mechanism can be lifted along the metering assembly, so that the material in the discharging mechanism enters the metering channel of the metering assembly, the blanking channel is located between the metering channel and the discharging channel, and the blanking channel can be horizontally moved to be connected with or disconnected from the metering channel and the discharging channel. The application further discloses a filling metering method, which comprises the following steps: S1, the discharging mechanism is lifted, so that the material in the discharging mechanism enters the metering channel of the metering assembly; S2, the discharging mechanism is lowered, and the blanking channel is horizontally moved to be connected with the metering channel and the discharging channel; and S3, the material is discharged and filled from the metering channel in sequence through the blanking channel and the discharging channel. The application has the advantages of simple structure, reduced material crushing and small occupied stroke space.