58results about How to "Not prone to situations" patented technology

An electronic device comprises a storage unit, a touch screen, a processor and a pressure-sensitive button, wherein the storage unit is stored with a preset pressure value; the pressure-sensitive button comprises a pressing surface arranged on the touch screen, a pressure sensor and a flexible circuit board; the pressure sensor is mounted on the back surface of the pressing surface and is used for sensing a pressure transmitted by the pressing surface and converting the pressure into pressure information; the two ends of the flexible circuit board are connected to the pressure sensor and the processor respectively, and the flexible circuit board is used for transmitting the pressure information sensed by the pressure sensor to the processor; the processor is used for judging whether the pressure reaches the preset pressure value according to the pressure information, and if so, controlling the touch screen to display a main interface. The invention further provides the pressure-sensitive button. The pressure-sensitive button provided by the invention is unlikely to sink, deflect and/ or fail, so that the reliability of the electronic device is improved.

The invention relates to a flow system for purchasing tobacco leaves, which comprises a tobacco point server arranged in a computer network and a purchase control center connected with the tobacco point server, wherein the purchase control center is connected with at least one a tobacco leaf purchase line for a purchase field management system unit and one selectively-matched numbering device; the tobacco leaf purchase line comprises tobacco submitting and card swiping equipment for identifying the identity of a tobacco grower, tobacco leaf grading equipment for determining and inputting the grade of sold tobacco leaves basket by basket, tobacco leaf weighting equipment for reading the weight of the tobacco leaves basket by basket according to the graded sequence as well as tobacco grower payment confirming equipment for confirming the sale by the tobacco grower in field. By using the flow system, a management control strategy is customized flexibly according to requirement and the field flow management is realized according to the allocated functions of process participant roles; the sale confirming function is added, so that the mistaken and disputing conditions are not easily generated; the traced record in the quality control process is distinct to facilitate the quality trace of products; the fairness and the objectivity are improved; the work efficiency of purchasing the tobacco leaves is improved; and the flow system is simple in operation and has strong applicability.

The invention discloses an easy-to-use grinding equipment for plate processing, comprising a base, the middle part of the upper surface of the base is fixedly connected with a fixing seat, and the upper surface of the base is fixedly connected with two symmetrical first electric push rods, the two The first electric push rods are respectively located on both sides of the fixing seat. The easy-to-use grinding equipment for plate processing can push the first grinding wheel to grind the plate to be polished by setting the first electric push rod on the upper surface of the base, and can squeeze and fix the plate. Under the action, it can make the grinding equipment for plate processing more convenient to use, and it is not easy to slip and uneven grinding. By setting the second electric push rod inside the fixed column, the support rod can be adjusted up and down, so that it can be adjusted according to the grinding It is necessary to adjust the grinding equipment, which can make the grinding equipment more convenient to use and further improve the grinding quality of the plate.

The invention provides an automatic unloading control system for a finished product warehouse and an asphalt station. The automatic unloading control system for the finished product warehouse comprises the finished product warehouse, an image recognition device and a control device, wherein an unloading outlet, an unloading door at the unloading outlet, and a drive device for driving the unloadingdoor to be opened or closed are formed on the lower portion of the finished product warehouse; the image recognition device is used for acquiring image information of a transport cart below the finished product warehouse; and the control device is connected with the image recognition device and the drive device, and used for judging at least one of the position information of the transport cart,the container size and container material level information according to the image information, and controlling action of the drive device. By means of the technical scheme, asphalt is not prone to overflowing or scattering, the safety accident that people are scalded is reduced, the charging efficiency is improved, and therefore the production efficiency of the asphalt station is improved.

The invention discloses a preparation method of a polypropylene capacitor film which allows double-sided metalization. The method comprises the following steps: (1) selecting and preparing raw materials; (2) extruding cast sheets through an extruder; (3) cooling with a chilling roll or an air shower; (4) performing longitudinal stretching; (5) performing lateral stretching; (6) measuring thickness, cutting edges and performing corona treatment; (7) rolling; (8) performing first aging treatment; (9) cutting, and (10) performing second aging treatment. Compared with the prior art, the polypropylene capacitor film prepared by the method has the characteristics of low hot shrinkage rate and stable performance at high temperature, namely good high-temperature stability.

The invention relates to an anti-floating structure of a pipeline. The anti-floating structure comprises a pipeline installation ditch, a prefabricated pipeline is arranged in the pipeline installation ditch, a cross beam is arranged at a ditch opening of the pipeline installation ditch, the two ends of the cross beam are respectively fixed with the ground on the two sides of the pipeline installation ditch, a vertically-arranged pressing rod is arranged on the cross beam, and the pressing rod can move downwards so as to apply downward pressure to a pipe joint so as to press and fix the prefabricated pipeline. The anti-floating structure has the advantages that the pipeline is limited, so that the pipeline is not likely to move and float in position in the backfilling tamping process. Theinvention also discloses a construction method of the pipeline. The construction method has the advantages that when the pipeline installation ditch is backfilled, the pressing rod applies downward pressure to the prefabricated pipeline so as to press and fix the prefabricated pipeline into the pipeline installation ditch, the movement and floating phenomena of the position of the prefabricated pipeline are not likely to occur in the process of backfilling the pipeline installation ditch, and the construction quality of the prefabricated pipeline is guaranteed.

The invention discloses a waterproof and twist-proof cable for wind power generation. The cable comprises an outer insulating layer; the surface of the outer insulating layer is fixedly connected withrubber protrusions; and an outer waterproof layer is adhered to the inner wall of the outer insulating layer; a silicone layer is adhered to the inner wall of the outer waterproof layer; and a filling layer is adhered to the inner wall of the silicone layer; a main conductive wire is arranged at the center of the inside portion of the filling layer; secondary conductive wires are arranged in portions, at the top and left and right sides of the main conductive, inside the filling layer; and the four secondary conductive wires are arranged to encircle the main conductive wire at the center. Themain conductive and the secondary conductive wires each comprise a copper core, wherein the copper core is formed by twisting 23 bundles of wires, and each bundle is formed by twisting 102 copper wires with a diameter of 0.2 mm. The waterproof and twist-proof cable for wind power generation is simple in structure, low in cost, effectively avoids occurrence of cable twisting-off or water seepage,can realize continuous conveying of electric energy, reduces cost of circuit setting and completely satisfies demands of usage.

The invention relates to a preparation method of a waterproof breathable film. The preparation method comprises the following steps: dissolving dopamine in methanol to obtain a dopamine solution; dissolving polyamine in water to obtain a polyamine solution; dissolving acyl chloride in an organic solvent to obtain an acyl chloride solution; soaking a base film in the dopamine solution and carryingout drying to obtain a first base film; soaking the first base film in the polyamine solution and carrying out drying to obtain a second base film; and leaching the acyl chloride solution on the second base film and carrying out drying to obtain a waterproof breathable film, wherein the acyl chloride has a structure shown in a formula (I): (as described in the specification), and m in the formulais more than or equal to 2 and less than or equal to 5. The waterproof breathable film prepared by the method has better waterproof and breathable functions.

The invention discloses a mold for blow molding of an air filter pipe. The mold comprises an upper mold (1) and a lower mold (2), wherein a connecting piece (4) is embedded in a cavity of the air filter pipe, a first groove for accommodating the upper part of the connecting piece (4) is formed in a first inward concave part, and a second groove (5) for accommodating the lower part of the connecting piece (4) is formed in a second inward concave part (3); a positioning mechanism for positioning the connecting piece (4) is arranged on the lower mold (2). An insert of the mold for blow molding ofthe air filter pipe is the connecting piece (4), a vertical positioning block (8) is arranged at the upper part of the connecting piece (4), and a ball positioning piece (15) is arranged at the lowerend of the vertical positioning block (8); a horizontal positioning block (7) is arranged at the lower part of the connecting piece (4); at least four connecting holes (6) are formed in the connecting piece (4) and distributed in the positions near two ends of the connecting piece (4). Compared with the prior art, the production period of the air filter pipe can be shortened, and the preparationcost is lower.

The invention belongs to the technical field of weaving, and specifically relates to a double cloth with crossed and enclosed structures and a weaving method of the double cloth. The double cloth comprises a surface layer fabric and an inner layer fabric, and part of warps and wefts of the surface layer fabric and part of warps and wefts of the inner layer fabric are interweaved to form an enclosed layer. The weaving method comprises that when the wefts of the surface layer fabric are input to weave the surface layer, the warps of the upper layer fabric are all sunken and are not interweaved with the wefts of the surface layer fabric; when the wefts of the inner layer fabric are input to weave the lower layer, the warps of the surface layer fabric are all lifted and are not interweaved with the wefts of the inner layer fabric. The double cloth has the surface layer fabric and the inner layer fabric, and has an accommodating space which can accommodate filler, and is especially suitable for making down jackets; the fact that in the prior art, when a down jacket is made, two layers of fabrics need to be superposed first, then are stitched through threads in an isolated manner is avoided, sewing processes are greatly reduced, the labor cost is saved, the down leakage condition is not liable to appear, the double cloth is smooth and beautiful, and is helpful for improving the market competitiveness of down jackets.

The invention relates to a method and system for achieving intelligent substation misoperation prevention. The method includes: a misoperation-preventing module is arranged in a monitoring system application layer, and the misoperation-preventing module interacts with an integrated business platform and interacts with other application layer business modules through the integrated business platform; the misoperation-preventing module acquires the configuration information of a whole substation from the integrated business platform and performs misoperation-preventing locking judgment on corresponding business modules according to the acquired configuration information, the corresponding business modules operate normally when misoperation-preventing logic is satisfied, and forced locking is performed when the misoperation-preventing logic is not satisfied. By the arrangement, the method has the advantages that the misoperation-preventing locking of each business module can be judged, switching missing and wrong switching during operation cannot occur easily, and a good misoperation-preventing effect is achieved; in addition, the misoperation-preventing module can realize misoperation-preventing operation in links such as running, operation and maintenance of an intelligent substation, and the operation range of the misoperation-preventing module covers primary equipment such as a circuit breaker and a disconnector and secondary equipment such as a protector and measuring and controlling equipment.

The invention relates to a rotary pressing tooling for manufacturing asymmetric T-shaped rotary pressing belt wheels. An upper core mold and a lower core mold are arranged on rotary pressing equipment, a T-shaped thickening rotary wheel, a flat rotary wheel, a preforming tooth rotary wheel and a final forming tooth rotary wheel are respectively arranged on respective rotary wheel shafts, each rotary wheel and the upper and lower core molds are in corresponding arrangement, the work surface of the T-shaped thickening rotary wheel is provided with a groove, and the groove corresponds to a plate material tightly clamped by the upper core mold and the lower core mold. Materials are regulated to uniformly flow towards two sides according to proportions through the contact area between the circular arc of the groove and the material, the material flowing speed is also limited by the groove, the extrusion on the materials is also enhanced in the stack rotation process, the compactness is realized, the cracking and delamination possibilities are reduced, and the forming stability is improved. The flat rotary wheel is mainly used for continuously pushing distributed materials until the inner walls at two T-shaped sides are fully pasted with the upper core mold and the lower core mold through feeding. The rotary pressing tooling has the advantages that the processing process is stable, the rotary pressing effect is good, and conditions of folding, delamination and fracture of the materials cannot occur in the forming process.

The invention provides a charging cabinet and a system thereof and relates to the field of charging cabinets. The charging cabinet comprises a cabinet slot structure, portable power sources, buckles, a control motor and base elastic elements. At least one slot is formed in the cabinet slot structure, and one slot is used for containing one portable power source. The outer wall of the portable power source is provided with at least one groove, and the inner walls of the slots are provided with the buckles matched with the grooves. The control motor is arranged on the cabinet slot structure, connected with the buckles, and used for controlling the buckles to extend and retract relative to the inner walls of the slots, so that the buckles extend into or out of the grooves. The base elastic elements are arranged on the bottoms of the slots and used for popping up the portable power sources. According to the charging cabinet, the portable power sources are fixed by means of a buckle locking structure, so that the portable power sources are in a stable state, the withdrawing and popup operation is simple, safe and reliable, and not prone to interference of outside electronic signals.

The invention belongs to the technical field of spinning, and particularly relates to double-woven fabric with a cross closed structure and a weaving method of the double-woven fabric. The double-woven fabric comprises surface fabric and lining fabric, wherein part of warp yarn and weft yarn of the surface fabric and part of warp yarn and weft yarn of the lining fabric are interwoven together to form a closed layer. The weaving method comprises steps as follows: when surface weft yarn is input for weaving an upper layer, all lining warp yarn sinks and is not interwoven with the surface weft yarn; when the lining weft yarn is input for weaving a lower layer, the surface warp yarn is all lifted and is not interwoven with the ling weft yarn. The double-woven fabric comprises the surface fabric and the lining fabric, has accommodating space for accommodating filler, and is particularly suitable for down jacket production; the condition that the two layers of fabric are required to be overlapped firstly and then sewing and isolated threading are performed during down jacket production in the prior art is avoided, the sewing process is greatly reduced, labor cost is saved, the probability of conditions such as down losing is low, the appearance is neat and attractive, and improvement of down jacket market competitiveness is facilitated.

The invention relates to the technical field of electric automobiles and discloses a solar electric automobile. The solar electric automobile comprises a solar panel, a motor, a storage battery, a gearbox and a motor controller, wherein the solar panel is arranged on an automobile body and the motor, the storage battery, the gearbox and the motor controller are arranged in the automobile body. The motor is respectively connected with the gearbox and the motor controller. The solar electric automobile further comprises a conversion device. The conversion device is respectively connected with the solar panel, the storage battery and the motor controller. The gearbox is connected with wheels through drive axles. The motor comprises a ball cage shaft, a motor rotor, a shell and a spring. The motor rotor is arranged on the ball cage shaft. The shell is arranged on a machine frame of the automobile body through the spring. The solar electric automobile is simple in structure and capable of effectively reducing exhaust gas emission and guaranteeing cleanness of ambient air.

The invention relates to the field of ancient building repair, and particularly discloses a coating for ancient building repair and a preparation method thereof. The coating for ancient building repair is prepared from the following components: a pigment, styrene-acrylic emulsion, silicone acrylic emulsion, nano tourmaline powder, a coalescing agent, filler, a thickening agent, a pH regulator and a defoaming agent. The preparation method comprises the following steps: (1) mixing the pigment, the filler and the nano tourmaline powder, and uniformly stirring to obtain a pre-mixture; (2) uniformly mixing the pre-mixture with a part of silicone acrylic emulsion, grinding and dispersing to obtain a pigment color paste; and (3) adding the rest of the silicone acrylic emulsion, styrene-acrylic emulsion, the coalescing agent and the pH regulator into the pigment color paste, uniformly stirring, then adding the thickening agent, and uniformly stirring to obtain the coating for ancient building repair. The coating disclosed by the invention has the advantage of relatively good external environment corrosion resistance; in addition, the preparation method provided by the invention has the advantage that all the components are mixed more uniformly.

The invention discloses a high-strength PE pipe. The high-strength PE pipe sequentially comprises a PE layer, a resin layer, an inner glass fiber layer, a quartz sand layer and an outer glass fiber layer from inside to outside, wherein the PE layer comprises the following components in parts by weight: 20-30 parts of polyethylene, 10-15 parts of an ethylene-propylene methylene copolymer, 10-12 parts of polypropylene fiber, 8-10 parts of diatomite, 3-5 parts of quartz sand, 2-3 parts of glass reinforced plastic and 2-3 parts of activated carbon. Through addition of the quartz sand, the glass reinforced plastic, the activated carbon and other raw materials in the high-strength PE pipe, the finally produced high-strength PE pipe is relatively high in strength; in addition, the quartz sand hasrelatively strong corrosion resistance and wear resistance, the produced high-strength PE pipe has good corrosion resistance and wear resistance, is unlikely to damage and is long in service life.

The invention relates to an end lining plate for a ball mill. The end lining plate is provided with an end lining plate body, wherein a boss is arranged at the longitudinal center position of the end lining plate body; two 'Y'-shaped grooves are respectively formed in the two sides of the boss. The end lining plate for the ball mill is simple in structure and convenient to use, has good impact resistance and wear resistance, is unlikely to be broken, worn and deformed, and has small possibility of falling off; after the end lining plate is used, the production cost is lowered, the safety factor is increased, and the service life of the lining plate is prolonged.

The invention belongs to the technical field of ceramic tile preparation, and discloses a gold plating process of a three-dimensional glazed ceramic tile. The gold plating process comprises the following steps: manufacturing a pattern layer on the surface of a tile blank, spreading frit powder on the pattern layer, sintering for the first time, polishing, cleaning, applying a convex glaze material, sintering for the second time, forming a convex glaze layer by the convex glaze material, coating a coating, plating gold, cleaning with a solvent, and obtaining the three-dimensional glazed tile. The frit powder comprises silicon dioxide, magnesium oxide, aluminum oxide, potassium oxide, iron oxide, sodium oxide, calcium oxide, zinc oxide, barium oxide, zirconium oxide and boron oxide; the convex glaze material comprises aluminum oxide, silicon dioxide, ferric oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, titanium dioxide, strontium oxide, rubidium oxide, lithium oxide, lead oxide, zinc oxide, boric oxide, barium oxide, zirconium oxide, phosphorus pentoxide and cadmium oxide. The fusion property of the frit powder and the convex glaze material after sintering is good, and the prepared three-dimensional glazed ceramic tile keeps a good three-dimensional effect.

The invention discloses durability detection equipment and detection method for an electric power safety protection rope, the durability detection equipment comprises a machine body, a guide rail and a pulling device, the pulling device is arranged at the top of the guide rail, one end of a winding column is fixedly connected with one side of the top of the surface of a sliding base, and a puncturing device is arranged on the surface of the winding column. The tensioning device is arranged at the position, close to the puncturing device, of the surface of the winding column, one side of the surface of the slope rubber block is fixedly connected with the surface of the puncturing plate device, and one side of the surface of the supporting plate is fixedly connected with the side, away from the puncturing plate device, of the surface of the slope rubber block. According to the durability detection device and method for the electric power safety protection rope, the anti-loosening effect is achieved, the safety protection rope can be firmly fixed and is not prone to loosening or falling off, detection is rapid and accurate, safety guarantee is provided for follow-up use, safety and reliability are achieved, and the detection efficiency and the use performance are improved.

The invention provides a concrete surface strain sensor with high-output-sensitivity and a manufacturing and measuring method thereof, the concrete surface strain sensor with high-output-sensitivitycomprises an elastic element, a strain gauge line structure used for collecting and converting strain signals is arranged at the vault part of the elastic element. The strain gauge circuit structure ispackaged and bonded at the top of the elastic element through a waterproof layer structure, and a fixed hinge support and a movable hinge support are respectively arranged at two arch foot parts of the elastic element. The vault strain of the elastic element is irrelevant to materials, and the elastic element is made of galvanized iron sheet materials. In order to enable the sensor to adapt to normal work in various severe environments, an elastic element of the sensor and a strain gauge at the arch crown are required to be protected and sealed with glue.

The invention provides a composite film for geothermal film packaging and a preparation method thereof. The composite film is formed by pasting, pressing and compounding an EVA/polyolefin thin film and a PET base material film. The EVA/polyolefin thin film is formed by mixing EVA resin, polyolefin resin and an anti-aging agent. The mass ratio of the EVA resin to the polyolefin resin is (1-4):1. The mass of the anti-aging agent is 0.1%-2% that of the EVA resin. The peel strength of an original geothermal film is improved, the anti-aging performance is improved, the polyolefin material is selected as a modification material, excellent comprehensive properties of high strength, high toughness, high electric insulation, high chemical corrosion resistance and the like are achieved, the melting point of a geothermal film packaging film is increased, and no bubble or delaminating or other conditions easily occur during later use.

The embodiment of the invention discloses an automatic labeling machine. The automatic labeling machine comprises a cabinet body, at least two station platforms, carrier modules, a mechanical arm anda controller, wherein the station platforms are arranged in the cabinet body and are used for conveying to-be-labeled objects along a rail to be transported out of the cabinet body; at least two station platforms are further used for controlling the turnover of the to-be-labeled objects; the carrier modules are arranged corresponding to the station platforms in a one-to-one correspondence mode; the carrier modules are arranged on the corresponding station platforms, and are used for bearing and fixing the object to be labeled; the mechanical arm is arranged in the cabinet body, and is used forattaching labels to the to-be-labeled objects on at least two station platforms in parallel; and the controller is arranged in the cabinet body, and is used for controlling the motion state of at least two station platforms, the carrier modules and the mechanical arm. According to the technical scheme, the problems that an existing manual labeling label consumes manpower and material resources and is low in efficiency can be solved.

The invention discloses a high-gloss waterproof pure-cotton photo painting canvas. A preparation method comprises the following specific steps that pure-cotton gray cloth needs to be subjected to first-time surface removal treatment of large yarn hairiness through special equipment; then second-time surface removal treatment of weak yarn hairiness and small yarn hairiness is carried out on the special equipment; and a hole sealing weight increasing layer is coated, a covering whitening layer is coated on base materials coated with the hole sealing weight increasing layer, and a water-based highlight waterproof ink-absorbing and ink-fixing layer are coated on the base material coated with the hole sealing weight increasing layer. According to the high-gloss waterproof pure-cotton pictorial painting canvas, the perfect pure-cotton base material is combined with the environment-friendly water-based high-gloss waterproof coating, and the finally manufactured product is fine in surface coating, high in glossiness, high in color resolution, full and bright in color gamut, not prone to color fading and outstanding in waterproof performance, so that the product is favored by numerous decorative picture production enterprises at present.

The invention relates to a preparation method of tar-free activated carbon. The preparation method comprises the following steps: S1, mixing a powdered carbon-containing raw material with asphalt to form a first material; S2, adding a dry powder binder into the first material, and mixing to obtain a second material; and S3, carrying out heating treatment on the second material to generate the activated carbon. According to the scheme, coal tar is replaced with the dry powder binder to produce activated carbon, environmental pollution and occupational health hazards of the coal tar in use are avoided, potential safety hazards are eliminated, and management investment is reduced. Meanwhile, the problem of carbonization tail gas treatment caused by the fact that coal tar is adopted as a binder to produce activated carbon is solved, investment of tail gas treatment equipment is reduced, and cost is saved.

The invention provides a stepping type conveying device and method for a carrier roller of a dip angle belt conveyor, and belongs to the technical field of belt conveyors of an iron-making system. Thestepping type conveying device comprises a carrier roller carrying device, three-carrier-roller assemblies, a conveyor support, traction ropes and winches. The multiple three-carrier-roller assemblies are arranged in the length direction of the conveyor support at intervals, the carrier roller carrying device is placed on the three-carrier-roller assemblies and connected with the winches throughthe traction ropes, the carrier roller carrying device is pulled by the winches to move on the three-carrier-roller assemblies, and the carrier roller carrying device is arranged to be of a double-groove type and can carry 3N carrier rollers which are matched with the number of carrier rollers of the three-carrier-roller assemblies. When the stepping type conveying device is adopted to convey thecarrier rollers, the support of the belt conveyor is utilized to transport carrier rollers needing to be installed in the next step on the installed three-carrier-roller assemblies, new three-carrier-roller assemblies are formed and continue to be applied to the conveying of the next step, no additional design of transport corridors is required, and the situation that other space is occupied, causing the obstruction to the installation of the carrier rollers by builders cannot happen.

The invention provides a high-strength eight-side sealing feed packaging bag and a preparation method thereof. The feed packaging bag comprises a bottom surface, first side faces and second side faces, and the front and rear sides above the bottom surface are provided with the first side faces symmetrically; the right and left sides above the bottom surface are provided with the second side facessymmetrically, and the second side faces are provided with inward side fold lines; the bottom surface is provided with bottom surface fold lines arranged perpendicularly to the side fold lines, and asealing zipper is embedded between the first side faces arranged symmetrically; and the bottom surface, the first side faces and the second side faces are of the same composition structure, and the bottom surface comprises a bottom surface base layer, a thermal insulation layer, a reinforced layer, a bonding layer, a waterproof layer, a frosted finish layer and heat seal film layers. According tothe feed packaging bag, the strength of a finished packaging bag can be improved through the reinforced layer made of high-strength molecular materials effectively, and the finished packaging bag is not liable to break and burst during handling and transportation of heavy feed; and meanwhile, the storage life of the feed in the packaging bag can be prolonged, and the feed packaging bag is high inairtightness, and is not liable to be affected with damp or leak air and the like.

The invention discloses a side spin umbrella and its foldable electric fan which is used forming a complete set. The side spin umbrella comprises an umbrella rod, an umbrella stick, an umbrella face and an umbrella cap and the umbrella cap is arranged at the center of the umbrella; the umbrella stick supports the umbrella face and the umbrella stick consists of a plurality of master umbrella sticks and slave umbrella sticks; wherein a plurality of master umbrella sticks are respectively hinged with the umbrella cap and are distributed with taking a centrally symmetrical radiation shape; the umbrella rod consists of a master umbrella rod and a slave umbrella rod; wherein the master umbrella rod is connected with one of a plurality of master umbrella sticks and one end of the slave umbrella rod is connected with the master umbrella rod and the other end of the slave umbrella rod is connected with the master umbrella stick symmetrical to the main umbrella stick connected with the master umbrella stick; the master umbrella rod is deviated from the center of the umbrella and the central line of the master umbrella rod is parallel to that of the umbrella cap and the umbrella stick has better bearing function. The foldable fan which is used forming a complete set with the side spin umbrella comprises an electric motor supporting frame, an electric motor, a fan core and fan blades and the electric motor supporting frame is arranged at the lower end of the umbrella cap or arranged on the slave umbrella rod.

The invention provides a preparation method of a drop irrigation fertilizer specially used for camellia oleifera, and relates to the technical field of agricultural liquid fertilizers. The preparation method includes the steps of: 1) adding the following raw materials including, by weight, 13 parts of ferrous sulfate, 21 parts of zinc sulfate, 30 parts of calcium metaphosphate, 49 parts of potassium fulvate and 400 parts of water into a reaction trough, continuously stirring the solution at constant speed and meanwhile heating the solution to 60 DEG C, and maintaining the temperature for 20 min to prepare a first solution; 2) cooling the first solution to normal temperature and adding 38 parts by weight of monopotassium phosphate and 75 parts by weight of monoammonium phosphate, uniformly stirring and mixing the solution and allowing the solution to stand for 30 min to prepare a second solution; and 3) dissolving 140 parts by weight of urea in 600 parts by weight of water and uniformly stirring and mixing the urea solution with the second solution to prepare the drop irrigation fertilizer specially used for camellia oleifera.

The invention relates to the technical field of new energy automobiles, in particular to a power battery pack fixing device. A plurality of battery pack mounting mechanisms are uniformly arranged on the outer side of the battery pack in the circumferential direction, positioning holes are formed in the battery pack mounting mechanisms, electric fasteners are arranged on the battery pack mounting mechanisms, and the electric fasteners are used for quickly fixing and separating the battery pack on an automobile bottom plate; the electric fastening device comprises a motor, a speed reducer, a screw rod, a wedge-shaped sliding block, a fixing support, a mounting pin, a reset piece, a positioning pin and a fixing claw, a shell of the motor is fixedly connected with the automobile bottom plate, and the output end of the motor vertically points to the ground. According to the technical scheme, the problems that in the prior art, the power battery assembly process is tedious, and when the power battery is in the short circuit or spontaneous combustion condition, the power battery cannot be automatically and timely separated from the automobile bottom plate, so that an automobile body is ignited, and losses are increased are solved.