781results about How to "Achieve mechanical properties" patented technology

The invention provides a double-motor skidproof differential drive axle used in electric automobiles, which comprises two driving motors, a speed reducer and an output axle which is connected with theThe invention provides a double-motor skidproof differential drive axle used in electric automobiles, which comprises two driving motors, a speed reducer and an output axle which is connected with the speed reducer. The two driving motors are arranged face to face in the middle of the driving axle and connected into a whole through the shell of the speed reducer. The power output by the two drivinspeed reducer. The two driving motors are arranged face to face in the middle of the driving axle and connected into a whole through the shell of the speed reducer. The power output by the two driving motors converges together and flows into the speed reducer; and then the power further drives the left and the right wheels of the electric automobile to rotate through the output axle which is conng motors converges together and flows into the speed reducer; and then the power further drives the left and the right wheels of the electric automobile to rotate through the output axle which is connected with the speed reducer. The driving motors and the speed reducer can be arranged in an engine chamber to achieve compact structure and save space. Simultaneously, in order to solve the problem oected with the speed reducer. The driving motors and the speed reducer can be arranged in an engine chamber to achieve compact structure and save space. Simultaneously, in order to solve the problem of skidding, a skidproof differential device is also arranged in the speed reducer.f skidding, a skidproof differential device is also arranged in the speed reducer.

The invention relates to a comprehensive test sample rod for double-shaft tilting in-situ force and electric property of a transmission electron microscope, belonging to the researching field of in-situ measurement of transmission electron microscope accessories and nanometer materials. The comprehensive test sample rod comprises a self-designed transmission electron microscope sample rod, a force/electric property sensor, a pressing sheet, a front end of sample rod and a sensor carrier, wherein the force/electric property sensor is fixed on the sensor carrier at the front end of sample rod through the pressing sheet; the sensor carrier is connected to the front end of sample rod through rotating shafts located on two sides and can rotate around the two rotating shafts in a plane verticalto the front end of sample rod (namely rotating for +/-30 degrees around Y shafts); and electrodes of the force/electric property sensor are connected to the electrodes on the two sides of the front end of the sample rod through the pressing sheet and are connected to an external test device through leads in the sample rod, thereby realizing the in-plane loading (in a sensor plane) of a force/electric signal and the feedback real-time monitoring. The comprehensive test sample rod can be used for tilting a searching sample to be under a low-index positive belt shaft, thereby realizing in-situ atomic scale observation while acquiring force/electric comprehensive property parameters.

The invention discloses a pipeline inner wall rust removal device, belonging to the technical field of polishing units. The device comprises a first end cover and a second end cover which are hermetically installed at two ends of the pipeline, a rust removal trolley is arranged in the pipeline, the dust removal trolley comprises a pneumatic motor with dual output shafts, a shell of the pneumatic motor is provided with a plurality of support shafts, the end part of each support shaft is provided with a roller wheel, a grinding disc is fixedly installed on the output shaft of the pneumatic motor, close to the first end cover, and is provided with a plurality of support rods in the radial direction, the end part of each support rod is provided with an abrasive disc, the output shaft of the pneumatic motor, close to the second end cover, is connected with a shot-blasting machine in a transmission manner; the end part of the grinding disc is connected with a traction rope, the traction rope extends out of the first end cover, one end of the shot-blasting machine, close to the second end cover, is connected with a shot feeding pipe, the pneumatic motor is connected with a gas inlet pipe, the shot feeding pipe and the gas inlet pipe extend out of the second end cover. The pipeline inner wall rust removal device can be used for solving the technical problems that the pipeline inner wall is serious in rust removal pollution and the rust removal effect is poor, and can be widely applied to pipeline cleaning.

The invention relates to a method for preparing a nano-cellulose antibacterial composite material through on-line culture. The method comprises the following steps of: (1) inoculating an activated bacterial cellulose producing strain into a liquid culture medium, performing amplification culture, transferring the liquid culture medium into a bioreactor, culturing, adding an antibacterial material into the liquid culture medium, and continuing to culture to obtain an unpurified antibacterial bacterial cellulose composite material; and (2) peeling a bacterial cellulose membrane from a framework or directly soaking the composite material in a NaOH solution, treating in water bath, and washing until an obtained product is neutral to obtain the nano-cellulose antibacterial composite material. The preparation efficiency is high, and the method is simple, convenient, feasible and low in cost; and the surface of the bacterial cellulose composite material has a nanoscale three-dimensional fibrous mesh-shaped structure, the tensile strength of the material is greatly improved compared with that of a pure bacterial cellulose membrane, and the material can be widely applied to products such as facial masks, wound dressings, plasters, artificial skins and the like.

The invention relates to a coal mining method for a high-dipping low coal seam by long-wall mining. The method comprises the following steps of: supporting a roof by a self-advancing air bag support; arranging a working surface in a mode of advancing to the dip; mining coal by drilling and blasting or using an off-pan shearer; transporting the coal in a mode of gravity haulage; filling a goaf with gangue or sand; and filling a lower end with gangue bags, precast concrete blocks or solidified macromolecular foaming slurry. The coal mining method has the advantages of realizing mechanical coal mining for the high-dipping low coal seam, improving the yield per unit and efficiency of the working surface, effectively protecting the exploited ground, improving the recovery rate of mines, and guaranteeing the coal seam mining safety.

The present invention provides an apparatus and improved method of friction stir spot welding that assures a predetermined bottom thickness and a reduction in variation in a series of resultant spot welds. The advantage of the present invention lies in that the plunge distance is controlled from the top plane of the anvil against which the bottom thickness is specified, and systematically adjusted to account for changing system parameters, such as, but not limited to, deflection and thermal expansion of the weld gun. The present invention also provides for improved and controlled weld quality through implementation of a dwell operation or dwell operations, whereby weld heat input is manipulated by causing the weld tool to dwell in a dwell region or at a desired depth or depths within the workpiece(s) for a predetermined time interval to achieve desired mechanical properties of the resultant weld joint.

The invention provides a stacking technology for cargo, and a logistic stacking machine. The logistic stacking machine includes a cargo conveying platform, a cargo conveying platform horizontal movement drive device, a cargo conveying platform vertical movement drive device, a cargo shelf for storing cargo, a limiting sensor and a PLC; the limiting sensor is connected to the PLC; the cargo conveying platform vertical movement drive device is arranged on the cargo conveying platform horizontal movement drive device; the cargo conveying platform is fixed on the cargo conveying platform vertical movement drive device; the limiting sensor is used for detecting spatial position information of the cargo conveying platform, and transmitting the detected spatial position information of the cargo conveying platform to the PLC; and the PLC controls the cargo conveying platform vertical movement drive device and the cargo conveying platform horizontal movement drive device to achieve forward and backward movement and vertical movement of the cargo conveying platform. The logistic stacking machine is simple in structure, is high in working efficiency, is stable in performance, and can achieve mechanical and automatic cargo conveying.

The invention relates to a modal synthesis dynamic modeling and analysis method for an automobile driving axle system. The method is characterized by comprising the steps that 1, a finite element model of all components of a driving axle is established, boundary nodes are defined according to the connecting relation between the components, a modal synthesis model of all the components is established, and a modal synthesis rigidity matrix and a mass matrix of all the components are obtained; 2, a connecting relation model of all the components is established; 3, the modal synthesis rigidity matrix and the mass matrix of all the components are assembled according to the connecting relation, a complete modal synthesis dynamic model of the driving axle system is established, and a rigidity matrix and a mass matrix of the driving axle system are obtained; 4, natural vibration frequency and a regular vibration mode of the dynamic model of the driving axle system are calculated, and a mode superposition method is adopted to calculate the dynamic response of the driving axle system under excitation of dynamic engaging force of gears of a main reducing gear. In the whole modeling process, high universality and calculating efficiency are achieved, and the method can be widely applied to dynamic analysis of a gear transmission system.

The invention relates to the technical field of biodegrade mulching films, in particular to a high-barrier full-biodegrade mulching film and a preparation method thereof. The mulching film is prepared from, by weight, 15-40 parts of PPC, 25-65 parts of PBAT, 10-47 parts of PHBH, 3-10 parts of plasticizer, 3-8 parts of inorganic filler, 0.2-1 part of crosslinking agent, 0.1-1.2 parts of light stabilizer, 0.1-1.2 parts of antioxidant, 0.3-2 parts of lubricant and 0.015-0.08 part of coupling agent, wherein the coupling agent is 0.5-1% of the inorganic filler in weight. The preparation method comprises the steps of filler surface treatment, material drying, mixing, melt extruding for granulation and blow inflation for molding. The PHBH, the PPC and the PBAT in the mulching film are compounded and blended, the components complement each other's advantages, the barrier property is good, the mechanical mechanics performance, use effect and heat preservation and moisturizing properties can meet the requirements of general mulching films, the high-barrier full-biodegrade mulching film can be decomposed completely within 1 year and is simple in preparation process.

The invention discloses an assembled type gridding shearing wall structural system which comprises a plurality of shearing wallboards arranged from top to bottom. Each shearing wallboard comprises a shearing wall body, upper restraining hidden beams and two vertical edge restraining components, the shearing wall body is formed by a plurality of prefabricated gridding shearing wall main bodies in a spliced mode, every two adjacent prefabricated gridding shearing wall main bodies are connected through a connecting hidden column, and rectangular boxes on the internal framework of each prefabricated gridding shearing wall main body are respectively provided with a rectangular heat preservation board in an inlaid mode. A construction technology of the assembled type gridding shearing wall structural system includes the steps of (1) carrying out measuring and setting-out, (2) hoisting the prefabricated gridding shearing wall main bodies, (3) constructing the upper restraining hidden beams, the connecting hidden columns and the vertical edge restraining components, (4) constructing the shearing wallboard on the upper layer, and (5) repeating the steps till the construction process of the multiple shearing wallboards is completed. The assembled type gridding shearing wall structural system and the construction technology are reasonable in design, convenient to construct, low in investment cost and good in use effect, and multiple problems in traditional assembling of an integrated shearing wall structure can be effectively solved.

The invention discloses a full-automatic retort installing system and a retort installing method of the full-automatic retort installing system. The full-automatic retort installing system comprises a multi-joint robot, a retort installing executing mechanism, a retort installing vision measurement and control mechanism, a center control mechanism and a feeding mechanism. The retort installing executing mechanism is fixed at the tail end of the multi-joint robot and is located above a retort barrel. The retort installing vision measurement and control mechanism monitors and controls temperature and height of a charge level in the retort barrel in real time. The center control mechanism receives information collected by the retort installing vision measurement and control mechanism and sends control information to the multi-joint robot and the retort installing vision measurement and control mechanism. The feeding mechanism feeds the retort installing executing mechanism. The full-automatic retort installing system can fully simulate manual retort installing, is more high-efficient and accurate, and achieves full mechanization and informatization of wine making retort installing technology.

The invention discloses a 3D printed digital artificial bone. The artificial bone consists of a cortical bone, a cancellous bone and a marrow cavity, wherein the cortical bone is composed of poly-L-lactic acid or polyester-ester-ketone; the cancellous bone is formed by mixing poly-L-lactic acid and hydroxyapatite; the molecular weight of the poly-L-lactic acid of which the cortical bone is composed higher than that of which the cancellous bone composed; the cortical bone and the cancellous bone are simultaneously prepared by a 3D printing technology. The invention also discloses a 3D printing method for the digital artificial bone. According to the artificial bone disclosed by the invention, in micrometer and millimeter scales, the porosity of the cortical bone is 10 percent; the porosity of the cancellous bone is 60-80 percent, and the pore size of the cancellous bone is 120-220 micrometers. The 3D printed digital artificial bone has the porosity, the pore size and the mechanical property as those of a bone structure of human beings.

The invention discloses an L-shaped full-closed environment-friendly hot galvanizing production method. The method is characterized in that: acid washing step-by-step automatic operation is implemented by adopting a mechanical hydraulic transmission manner, namely an acid washing workpiece automatic conveying system horizontally or vertically lifts to automatically convey workpieces to be galvanized to specified anti-collision acid washing tanks for acid washing and dust removing treatment step by step according to the multi-tank acid washing technological requirements, and the whole acid washing process is sequentially, progressively and automatically finished according to the technological requirements. The L-shaped full-closed environment-friendly hot galvanizing production method is pollution-free, environment-friendly, low in energy consumption, mechanical and automatic, and has the characteristics of full closure and integration of reclamation and treatment; and by the method, acid washing automation is realized, the labor intensity is furthest lightened, the production efficiency is improved, and the problem of pollution is solved.

The invention discloses a method of producing a protein feed by a liquid-solid two-step fermentation method. The method comprises the following steps: performing liquid culture on corynebacterium glutamicum, candida utilis, bacillus subtilis, lactobacillus plantarum and aspergillus oryzae so as to obtain corynebacterium glutamicum fermentation liquor, candida utilis fermentation liquor, bacillus subtilis fermentation liquor, lactobacillus plantarum fermentation liquor and aspergillus oryzae fermentation liquor; mixing the corynebacterium glutamicum fermentation liquor, the candida utilis fermentation liquor, the bacillus subtilis fermentation liquor, the lactobacillus plantarum fermentation liquor and the aspergillus oryzae fermentation liquor so as to obtain mixed bacterium liquor; loading raw materials of soybean meal, cluster bean meal, cottonseed meal and the like into an explosion vat for performing steam explosion; after steam explosion, mixing materials, the mixed bacterium liquor and molasses in proportion, and adding an enzyme preparation so as to obtain mixed materials; conveying the mixed materials into a special modularized solid-state biological raw material continuous fermentation device for enzymolysis and fermentation, and drying the fermented materials so as to obtain the protein feed. According to the method disclosed by the invention, the modularized automatic fermentation device is adopted, the materials after explosion, the fermented bacterium liquor and the enzyme preparation are mixed, then the mixed materials are loaded into the automatic fermentation device for enzymolysis and biological fermentation, so that requirements for automatic temperature control, automatic dampness control and automatic ventilation control are met, the bioconversion rate is high, the fermentation period is short, the consumption is low, the cost is low, and mechanized and large-scale production requirements can be met.

The invention discloses a welding tooling device for a pillar frame of a machine cabinet and an assembly method of the device, wherein the device comprises a clamp body (1) and is characterized in that a positioning element (2) and a clamping device (3) are fixedly arranged on the clamp body, the positioning element (2) is used for horizontal position limitation of all parts of the pillar frame of the machine cabinet, and the clamping device (3) is matched with the positioning element (2) for clamping all the parts of the pillar frame of the machine cabinet in the horizontal direction. By adopting the device and the method disclosed by the invention, the physical labor of operation staff can be greatly reduced, and the assembly and welding efficiency can be improved; and the welding thermal deformation of a workpiece can be controlled or eliminated, and the instability of manual welding can be reduced.

The invention relates to a technology and a device for recycling waste heat of an electrically fused magnesia melted block, which are characterized in that after a high-temperature magnesia melted block smelted in an electrically fused magnesia processing technique is entirely cooled in a tunnel heat exchange chamber, magnesia crystal crystallization and solidification are quickly completed, and hot air with medium-low temperature being preheated to be 200-300 DEG C is simultaneously obtained. The solidified magnesia melted block is hulled and cracked at high temperature to produce a high-temperature block. Cold air and the hot air with the medium-low temperature from the tunnel heat exchange chamber are fed into a high-temperature heat exchange tower to carry out heat exchange with the high-temperature block through a circulation air cooling method, hot air with high temperature being more than 1000 DEG C is generated to be fed into a mineral aggregate preheating tower, and magnesite is preheated to be more than 500 DEG C, so that the charging of hot materials is realized.

The invention relates to a blueberry picking vehicle which is characterized in that the vehicle body has a shape of door. When the vehicle works, the vehicle is driven by a drafter and longitudinally runs along the blueberry cluster. Two sets of metal teeth rows are respectively arranged on two side walls in a door-shaped compartment, wherein the teeth rows can rotate following teeth row pillars, so as to beat and flutter down the blueberries; the fluttered down blueberries drop onto conveyor belts having slots at two sides under the stopping action of a fruit-receiving plate and inside wall of the compartment; and then the blueberries are conveyed to a fruit box on the rear part of the compartment by the conveyor belts. In order to fully utilize the space of the compartment, the outer side of the compartment is designed into a fruit box frame which is used for storing the fruit boxes, thereby increasing the transporting efficiency.

The invention discloses a chemical topping method of cotton, comprising the following steps of: a, 3-5 days before and after the first bloom period of the cotton, spraying mepiquat chloride to carry out basic chemical control so that the cotton can grow stably without growing vigorously, wherein the dosage of the mepiquat chloride is 4-10g/mu; b, before and after the full bloom period of the cotton, spraying chemical topping agent on leaf surfaces, wherein the spray should be higher than the cotton plants, the dosage of the chemical topping agent is 40-80ml/mu and 15-30kg of water is mixed; and c, 3-15 days after the spraying of the chemical topping agent, spraying the mepiquat chloride to stabilize the chemical control of plant type, wherein the dosage of the plant type is 8-15g/mu, and the topping agent comprises the following components is percentage by weight: 20-30% of mepiquat chloride emulsion, 40-60% of water and 15-25% of flumetralin emulsion. Through the method, the automatic topping of the cotton can be realized, the topping quality can be ensured, the topping uniformity of cotton fields can be improved, the labor efficiency can be improved and the labor intensity can be lightened.

The invention discloses a platform for disassembling and assembling a disc hob used in the field of tunnel engineering, which comprises two parts, namely a hob end cover disassembly and assembly device and a bearing outer ring disassembly and assembly device. The bottom end of a hydraulic cylinder of the hob end cover disassembly and assembly device is hinged with a hydraulic supporting seat fixed on a base of the platform, a ratchet rod is hinged with a piston rod of the hydraulic cylinder, the other end of the ratchet rod is hinged to a cutter shaft of the hob placed in a positioning hole, a pawl is hinged to one pin shaft at the middle part of the ratchet rod, the pawl is engaged with teeth of a ratchet, and four positioning columns of the ratchet are placed in four holes of an end cover. The bearing outer ring disassembly and assembly device is characterized in that the hydraulic cylinder is fixed in the middle of a portal crossbeam, the lower end of the hydraulic cylinder is provided with a pressure plate, and a positioning ring is welded to the base of the platform and is concentric with the hydraulic cylinder. A bearing pressing-out plate and a bearing pressing-in barrel are used during pressing out and pressing in respectively. The platform device is simple and can be convenient to implement the disassembly and assembly of the disc hob.

The invention discloses a sideways-moving tilting brick clamp. The sideways-moving tilting brick clamp comprises a sideways-moving clamping mechanism (1) which consists of a bottom plate assembly, a sideways-moving clamping cylinder, a left clamping arm assembly and a right clamping arm assembly, a left rotating arm mechanism (2) and a right rotating arm mechanism (2) which consist of a tilting cylinder, a turning fixture and a clamping arm respectively, and a hydraulic control valve, wherein under the action of hydraulic oil, the sideways-moving clamping cylinder (12) can drive left and right clamping arm assemblies (14 and 15) to loosen or clamp bricks and move sideways from left to right or from right to left simultaneously; and under the action of the hydraulic oil, the tilting cylinder (25) can drive the clamping arms to turn forwards and backwards in the range of 0 to 90 degrees around a revolving shaft. By using the sideways-moving tilting brick clamp, manual handling is not needed in the whole process of demoulding, turning, cutting, stacking and loading large aerated blocks and ceramsite hollow building blocks, thus aims of realizing mechanized and automatic operation and improving the working efficiency are fulfilled; and besides, the sideways-moving tilting brick clamp is reasonable, complete, compact and simple in structure and high in stability and firmness.

The present invention discloses a kind of multiazimuth double-functional surrounding rock separation layer monitoring alarm instrument. It includes fixed tube, mechanical shell body, and electric shell body, thin steel wire rope with anchor jaw, angle sensor and signal transducer. It is characterized by that in the mechanical shell body interior a drive shaft, a scale flexible rule and a steel tape wheel are mounted, and in the electric shell body interior an infrared data collector and an infrared data transmission device are mounted. Said invention also provides the working principle of said monitoring alarm instrument and its concrete operation method.

The invention relates to the technical filed of geotechnical direct shearing apparatuses, and discloses an unsaturated soil slope apparatus for measuring the deformation and suction of soil. The apparatus comprises a slope model case, a data acquisition structure and an environment simulation structure; the upper end of the slope model case is oblique, one sidewall of the slope model case is transparent, and the transparent sidewall is provided with a plurality of index points; the environment simulation structure comprises a water spray structure and a drying structure; and the data acquisition structure comprises a camera and a suction sensor, the camera is arranged outside the transparent sidewall, and the suction sensor is inserted into the slope model case. In a cavity for accommodating unsaturated soil, wet-dry cycle simulation of the water spray structure and the drying structure is carried out, the camera acquires the deformation of unsaturated soil to measure macroscopic mechanical properties, the suction sensor acquires the suction data of the unsaturated soil to measure microscopic mechanical properties, and the apparatus is of great significance for the advanced researches of the mechanic characteristics of water and soil of the unsaturated soil slope under natural conditions and the stability under rain dry-wet cycle.