94results about How to "Avoid mixed situations" patented technology

The invention provides a printing component containing unit, a printer, an ink bottle and an ink filling method. The printing component containing unit is applied to the printer and comprises a containing part, an injection part and a limiting device. The containing part is provided with a cavity for containing ink. The injection part comprises an opening allowing the ink to be injected and a sealing part, wherein the sealing part is connected between the opening and the containing part, and the opening-closing state of the sealing part can be changed; when the sealing part is in the opening state, the ink can be supplemented into the containing part through the opening; and when in the closing state, the sealing part prevents the ink from being supplemented into the containing part through the opening. The limiting device is connected with the sealing part so as to control the opening-closing state of the sealing part according to ink information of the ink. According to the printingcomponent containing unit, it can be guaranteed that the correct color and type of ink is added into the printer, and ink mixing is avoided.

The invention relates to membrane coating multi-material photocuring 3D printing equipment and a use method thereof. Membrane-coating stereolithography (MCSL) is used for rapid 3D multi-material micro-manufacturing. The new technology utilizes elastic and oxygen permeation polymer membranes such as PFA membranes or PDMS, free and open surfaces in traditional P[mu]SL are eliminated, thus the manufacturing speed is greatly increased, a method capable of quickly switching materials in the printing process is provided, and that is, an advanced coating scraper is adopted. By utilizing specialized fluid control, any complex multi-material structure can also be achieved even free particles are encapsulated. Convenience is provided for preparation of multi-material, high-precision and large-formatsample pieces in a 3D printing mode. The advantage combination provides a powerful and promising tool for emerging research fields such as material science, cell biology and tissue engineering.

The invention discloses a method of manufacturing masked read-only memories, which includes steps of providing a semiconductor substrate defined with a memory cell region and a peripheral circuit region, forming an undoped gate material layer on the semiconductor substrate, etching the gate material layer to form a gate in required shape, sequentially forming a first silicon oxide layer and a silicon nitride layer on the semiconductor substrate, filling a dielectric layer in the memory cell region, forming a second silicon oxide layer on the semiconductor substrate, performing silicon oxide and silicon nitride etching, removing the silicon nitride layer from the gate of the memory cell region and forming gate sidewalls at the peripheral circuit region, and performing gate doping. Therefore, the method adopts the undoped gate material layer to form the gate, and the technological process is compatible with standard CMOS technique, thereby avoiding logical process incompatibility caused by the preliminarily doped gate material layer.

The invention relates to an automatic feeding system, which comprises a platform, a travelling crane system, a feeding mechanism, a feed box and a control cabinet, wherein the travelling crane system is arranged on the platform by a guide rail frame; a plurality of feed openings are formed on the platform; the feed box is arranged below the feed openings; a hanging basket is arranged on the travelling crane system; the control cabinet is arranged on the platform; the feeding mechanism comprises a driven well frame and a tilting mechanism; the tilting mechanism comprises a tilting pot buggy, a support and a bearing base; air cylinders are arranged on the support and the bearing base respectively; the support and the tilting pot buggy are jacked sequentially by the air cylinders, so that materials are poured into the hanging basket; the travelling crane system elevates the hanging basket to the upper side of the platform from the lower side of the platform; and the travelling crane system moves to convey the materials to the upper side of the feed openings from which the materials are needed to be fed, so that the materials are discharged in the feed box. In the automatic feeding system, the materials are discharged automatically by utilizing the feeding mechanism, and are conveyed by a travelling crane, so the automaticity is high, and the labor intensity of workers is relieved greatly; and the materials are stored in the feed box, so the occupation space of the ground is reduced; and a material-free detection device is arranged to remind of feeding materials in the feed box or not without artificial examination.

The invention provides a method and equipment for identifying accident black points on a traffic road. According to the method, multiple pieces of traffic accident information of the traffic road areacquired, and the traffic accident information comprises the accident position information; statistics processing on the multiple pieces of traffic accident information is carried out according to theaccident position information to acquire one or more candidate black points and the accident statistics information on each candidate black point; and the accident black points on the traffic road are determined from the one or more candidate black points according to the accident statistics information. Compared with the prior art, three different dimensions, including point, road section and region, are fully considered when the accident black points are determined, so the accident black points can be more comprehensively, scientifically and effectively determined, an accident black point missing problem is effectively solved, moreover, through accident black point characteristic analysis, not only can the potential black points of the in-use road be pointed out, but also guidance values for in-building roads can be further realized.

The invention relates to a light splitting and taping integrated LED detection method and device. The method comprises the following steps that (1) LEDs are conveyed to a first index plate; (2) the first index plate is rotated to an exchange station, and the LEDs are exchanged to a second index plate; (3) top surface images of the LEDs are detected through an image detection device, whether damageand stains are left on the material appearances of the LEDs or not is detected, a light splitting test is carried out, and the LEDs are classified into different types; (4) a certain type of LEDs areconveyed to the first index plate, and other types of LEDs are blown to different types of material receiving material barrels on the second index plate; (5) a certain type of LEDs are rotated to a direction needing taping through polarity rotation, and position correction is carried out; and (6) taping is carried out. According to the light splitting and taping integrated LED detection method and device, the light splitting process and the taping process are integrated, light splitting testing can be conducted during taping so that the situation that materials are mixed due to multiple timesof manual operation in the LED conveying process can be effectively avoided, and the consistency of LEDs during taping is improved.

The invention discloses a horizontal single-power two-way driving concrete mixing device, which relates to the technical field of construction engineering and comprises a mixing tank, an upper end of the mixing tank is provided with a feed port, and a lower end of the mixing tank is provided with a discharge port, and the mixing tank is arranged along the ground Inclined setting, the bottom of the mixing tank is provided with a fixed support base, and also includes a motor, a transmission shaft, several helical blades around the front section of the transmission shaft and several scraper blades around the rear section of the transmission shaft, and the end of the front section of the transmission shaft Through the inner wall of the front end of the mixing tank through the bearing seat, it is connected with the output shaft of the motor, and the end of the rear section of the transmission shaft is fixed on the inner wall of the rear end of the mixing tank through the bearing seat. The middle end of the transmission shaft is provided with a sorting drive mechanism. The building aggregate crushed by two helical blades is sorted and screened by the sorting drive mechanism to the rear section of the drive shaft, and mixed with cement evenly, and then sent out through the discharge port. By implementing the technical proposal, it is possible to effectively avoid the unevenly broken aggregates from being directly mixed with cement in the prior art.

The invention, which belongs to the field of internet technology, discloses an internet-agricultural-product-based sales management system and method. The system is composed of a login module, a commodity classification module, a commodity attribute screening module, a shopping cart module, an order confirmation module, an order settlement module, a personal center display module, an endorsement module, a supplier order module, and a settlement module. The settlement module is used for carrying out offline and online payment by a supplier with combination of a payment code scanning gun according to a money-receiving code of a user. On the basis of the internet related technologies, a scientific and rapid method is provided for farmers for agricultural products sales; the supply and demandof social resources are linked effectively and the product values of agricultural products are promoted by technical ways; the original ecological factors are transformed into advantage ones and thusthe original resource restrictions are changed into economic advantages; and the agricultural resources in poverty-stricken areas are activated and thus the human resources in poverty-stricken areas are mobilized.

The invention relates to a substrate structure, comprising a substrate and multiple barriers formed on the substrate, where multiple first holding spaces are formed between these barriers and the substrate to hold the ink injected by an ink jet device, and the barrier between two adjacent first holding spaces comprises at least a second holding space to hold the overflowing ink from the first holding spaces, thus able to avoid the ink in the two adjacent first holding spaces from mixing with each other. And the invention also relates to a film pattern layer making method, comprising the steps of: providing an above substrate structure; filling ink into the first holding spaces by an ink jet device; and drying and curing the ink in the first holding spaces to form the film pattern layer.

The invention discloses an automatic stratified sampling geological survey device which comprises a device body, a first servo motor and a rope lowering rack are arranged at the top end of the device body, a control panel is fixedly mounted at the top end of the rope lowering rack, and a rope lowering groove is formed in the top end of the first servo motor; a rope body is arranged in the rope lowering rack, the sampling water tank is driven by a first servo motor to sink, and in the process that the sampling water tank gradually sinks, after an elastic extrusion pad at one end of the sampling water tank is extruded by the water pressure of underground water, the sampling water tank is stressed to move rightwards; and a sampling push rod is pushed away from the interior of a push cavity groove by utilizing the push rod body, and an arc-shaped through groove is exposed out of the interior of a first sealing sleeve gasket, so that underground water with different depths is collected into a sample storage cavity through connecting pipelines by utilizing the arc-shaped through groove.

The invention belongs to the field of power distribution transformers, and particularly relates to an oil-immersed transformer containing a treating device. In the using process, a gaseous cavity inside a shell of the transformer can be eliminated, the performance of the transformer is improved, due to the fact that gaseous impurities such as water vapor generated by heating of water can rise along an oiling cylinder and an exhaust sleeve and exhaust from an exhaust hole in the using process of the transformer, simultaneously, oiling towards the interior of the transformer from the interior ofan oiling pipe is performed, so that old transformer oil can enter into the interior of a purification device from an oil outlet of the exhaust sleeve, purification treatment is carried out on the old transformer oil, circulation purification application of the transformer oil is realized in a sealed environment, and the content of maintenance work of the transformer is reduced.

The invention relates to the technical field of battery production equipment, and discloses a battery production discharging device. The device comprises a conveying support, and a conveying belt is movably sleeved with the conveying support. The upper surface of the conveying support is fixedly connected with a separation shell; the upper surface of the separation shell is fixedly connected witha feeding hopper; and a screening plate is rotationally connected into the separation shell; a separating and filtering hole is formed in the screening plate, a boundary plate is fixedly connected tothe inner wall of the bottom of the separating shell, a motor is fixedly connected to the upper surface of the boundary plate, a cam is fixedly connected to an output shaft of the motor, and the cam is slidably connected with the end, away from a supporting block, of the screening plate. According to the battery production discharging device, a cylindrical battery and a bulge battery can be separated, material waste of follow-up packaging is effectively avoided, and meanwhile the follow-up detection difficulty of the cylindrical battery is reduced.

The invention discloses an ingot casting flow table, which comprises a diverting groove, a filling groove and filling tubes, wherein the diverting groove is used for diverting the casting solution; the filling groove is communicated with the diverting groove; the filling tube is arranged on the filling groove; two filling tubes are distributed on the bottom of the filling groove uniformly; and the diverting groove is communicated perpendicularly with the middle part of the filling groove. According to the cast ingot flow table, during the primary period of casting, the pure aluminum flows into the filling groove connected with the diverting groove perpendicularly through the diverting groove, and subsequently flows into two filling tubes uniformly and enters the bottom of a casting mold, so that the time difference in cast ingot aluminum bottoming through the filling tube casting on one same filling groove is reduced; the mutual bottom aluminum solidification degrees of the cast ingots are generally the same, so that the situation that when the solution for ingot casting is filled at the later period, the solution may be fixed with the pure aluminum which is not solidified, is avoided effectively; and the situations of cast ingot slag inclusion or crack are reduced, and then the production quality of the cast ingot is improved. The invention also provides an ingot casing machining device of the ingot casting flow table.

The invention belongs to the technical field of rubber tire recycling, and particularly relates to a crushing treatment machine for recycling and reusing rubber tires. The crushing treatment machine for recycling and reusing the rubber tires comprises a bottom plate, a shell body is mounted on the bottom plate, two rotary drums are mounted on the shell body, a driving motor is fixedly mounted on the upper surface of the bottom plate through a motor base, an output shaft of the driving motor is fixedly connected with one connecting shaft, a cutting mechanism is mounted on the rotary drums, a top plate is installed on the bottom plate through a support, a shaping mechanism is installed on the bottom face of the top plate, and a cleaning mechanism is installed on the top face of the top plate. According to the crushing treatment machine for recycling and reusing the rubber tires, cleaning is carried out on broken stones in water drainage grooves of tire treads through the cleaning mechanism, the condition that the broken stones are mixed with broken rubber tire particles in the crushing process is avoided, and the recycling quality of the rubber tires is improved; and cutting is carried out on the tires in the direction perpendicular to tire cord threads through a cutting knife in the cutting mechanism, and therefore the cord threads in the tires are cut off, the situation that crushed rubber particles are connected together through the cord threads is avoided, and the crushing effect is improved.

The invention relates to a chemical storage tank. The chemical storage tank comprises a base, an air cylinder, a frame, a buffering unit, isolating plate sets and sealing cover sets. The air cylinderis connected between the base and the frame, and the buffering unit is arranged in the frame. The isolating plate sets are evenly arranged on the buffering unit in the circumferential direction, and the sealing cover sets are evenly arranged at the upper end of the frame. According to the chemical storage tank, the problems that most of existing chemical storage tanks are of single-cavity structures, each chemical storage tank is only allowed to storage one raw material, some raw materials small in storage volume are stored in the large-specification chemical storage tanks, and the storage space is likely to be wasted; the structures of the existing chemical storage tanks are fixed, most of the existing chemical storage tanks adopt adumbral sealing storage, and consequently some raw materials cannot be shielded to store can hardly be stored through proper chemical storage tanks; and during conveying of the existing chemical storage tanks, the chemical raw materials in the chemical storage tanks are likely to flash, and when sealing cover does not achieve tight sealing, the raw materials are likely to leak can be solved.

The invention relates to the technical field of kitchen utensils, in particular to a rotary seasoning box. The rotary seasoning box comprises a placement box of a cylindrical structure, wherein a bearing is arranged in the center of the placement box; the lower surface of a top cap is connected with the opening of the placement box; a retraction groove is formed in the side wall of a fan-shaped groove; one side of a limiting plate is connected with one side of a retraction cover; a torsion spring is mounted in the position, close to the center of the top cap, of the retraction groove; a limiting groove is formed in the side, far away from the retraction groove, of the fan-shaped groove; the side, far away from the limiting plate, of the retraction cover is connected with the limiting groove; a spring and a fixture block are arranged in a mounting groove; one end of the spring is fixedly connected with the fixture block; and a connecting groove is formed in the side, close to the retraction groove, of the upper part of the top cap. The rotary seasoning box is simple in structure, brings convenience for taking seasonings and prevents the seasonings from being mixed, space occupation is reduced, and placement of the seasonings is guaranteed, so that the taste of cooked food is guaranteed.

The invention discloses a cloisonne filigree craft picture manufacturing method, and relates to the field of handicraft manufacturing. The cloisonne filigree craft picture manufacturing method is characterized by comprising the following steps of (1) drawing and fixing a plate; (2) tracing; (3) filigreeing; (4) frosting color ore; (5) filling colored sand; (6) adjusting and trimming; (7) water glue sand solidification; (8) glue solidification again; (9) mounting and selecting materials; and (10) mounting and forming. According to the cloisonne filigree craft picture manufacturing method, through combination of manual drawing concept and computer drawing, drawing is simpler and more convenient, and then the manufacturing speed of the craft picture can be increased; and the patterns are perfectly colored by utilizing natural color ore frosting, so that the ornamental value and the permanent preservation of the filigree craft picture can be greatly improved, and the cultural transmissionof filigree craft picture artworks is facilitated.

The invention provides a pipeline system of an LNG double-gun filling machine. The pipeline system comprises a gas filling pipeline and a gas return pipeline, wherein the gas filling pipeline comprises a gas filling pipeline I and a gas filling pipeline II, wherein the gas filling pipeline I and the gas filling pipeline II are connected with a gas filling gun I and a gas filling gun II respectively, and the gas return pipeline comprises a gas return pipeline I and a gas return pipeline II, wherein the gas return pipeline I and the gas return pipeline II are connected with a gas return gun I and a gas return gun II respectively; and the pipeline system further comprises a standby pipeline, a small circulation pipeline I, a small circulation pipeline II and a safety valve pipeline, wherein the safety valve pipeline is connected with the gas filling pipeline, the standby pipeline is provided with a normally opening emergency cut-off valve which is connected with the gas filling pipeline and the gas return pipeline, the small circulation pipeline I is connected with the gas filling pipeline I and the gas return pipeline, and the small circulation pipeline II is connected with the gas filling pipeline II and the gas return pipeline. According to the pipeline system of the LNG double-gun filling machine, the metering precision can be greatly improved, moreover, the structure is simpler, the number of parts is reduced, the assembly and the later maintenance of the gas filling machine are facilitated, and the overall cost is reduced.

The invention discloses a mask-ROM manufacturing method; wherein, the method makes use of a gate material layer without doping to structure a gate, so that the process flow is compatible to the standard CMOS process and the problem of logic process non-compatibility caused by a pre-doped gate material layer is avoided. At the same time, an ON-NO two-step sidewall method is used, that is, after a bottom silicon oxide layer and a first silicon nitride layer are formed, a gate array dielectric layer of a storage unit region is inserted to fill the process, so as to form a second silicon nitride layer and a top silicon oxide layer. Therefore, a relatively thin ON layer is initially formed to expand the deposited process space of the dielectric layer, so that the integration of the semiconductor memory can be further enhanced; in the follow-up etching, under the protection of the second silicon nitride layer, the loss of the dielectric layer between the gate arrays can be reduced; moreover, the doped ion penetration can be effectively inhibited in the gate doping process, and the probability of leakage current among the storage units can also be reduced.

The invention discloses a detection method for preventing printing mixing during the SE battery production process. The step of shooting detection is added between SE laser doping and back-surface laser groove formation and is used for whether a batter piece after SE laser doping is consistent with the specification of a battery piece before the back-surface laser groove formation. A shooting table is additionally arranged between SE laser doping and back-surface laser groove formation, placement and detection of different types of battery pieces are handled by a coordinate system which is built in advance, contrast by camera shooting and a coordinate system is more convenient to identify compared with naked-eye observation, so that whether the type of the battery piece right subjected toSE laser doping is consistent with the type of the battery piece before back-surface laser groove formation is or not is determined, the situation that a large amount of pieces are mixed during subsequent production is prevented, and loss is prevented.

The present invention discloses an accumulated liquid sampling auxiliary device and a use method thereof. The accumulated liquid sampling auxiliary device comprises a needle cylinder, a first liquid collecting cavity is arranged in the needle cylinder, one end of the needle cylinder is provided with a connecting pipe, an elastic arc-shaped plate sleeves the connecting pipe positioned in the firstliquid collecting cavity, sliding blocks are arranged on both ends of the arc-shaped plate, limiting grooves are also arranged in an inner wall of an end part of the needle cylinder, when the arc-shaped plate moves towards the end part of the needle cylinder, the two sliding blocks can move towards both sides of the inner wall of the needle cylinder, side walls of the sliding blocks are respectively provided with a first movable rod, the first movable rods are connected with the sliding blocks in a sliding manner, both sides of the inner wall of the needle cylinder are respectively provided with a first cavity body, a first movable plate and a second movable rod are also arranged in each first cavity body, and each second movable rod penetrates into the first liquid collecting cavity; a sampling rod is also arranged in the needle cylinder, the sampling rod is internally provided with a second liquid collecting cavity, the second liquid collecting cavity is internally provided with a second piston and a second piston rod, both sides of an outer wall of the sampling rod are provided with limiting blocks, limiting blind holes are arranged on side walls of the limiting blocks, and an unblocking assembly is also arranged inside the end part of the needle cylinder.

The embodiment of the invention provides a log output method and device, electronic equipment and a medium. The method comprises the steps: over multiple threads, concurrently executing test cases ina pre-configured case set; for each thread, monitoring a starting event and an ending event of the executed test case; if a starting event of the test case is monitored, starting the test case; and creating an independent cache space for the test case, so as to record the log of the test case in the execution process into the cache space: if an end event of the test case is monitored, ending the log cache of the test case, and further outputting the log cached in the cache space of each test case in the case set.

The invention provides an energy-saving distiller. The distiller comprises a heating area, a heat circulated exchange area, a distilled liquid area, a liquid storage area and a heating pressurization auxiliary device, wherein the heating area comprises a liquid heating area and a hot steam area positioned above the liquid heating area, and the bottom of the liquid heating area is provided with a heater; the heating pressurization auxiliary device is used for carrying out heating pressurization auxiliary distillation circulation treatment on water vapor generated in the heating area. The distiller can circularly absorb and utilize heat in the system based on heat exchange between water vapor and liquid water by using the heating pressurization auxiliary device and a condenser pipe, and can accurately control the heating temperature of the heating area, and therefore the energy consumption of the distiller is greatly reduced.

The invention discloses an aerobic fermentation treatment system which comprises a fermentation bin and stirring blades for stirring materials in the fermentation bin, wherein the fermentation bin is divided into at least two adjacent bin bodies, each bin body is provided with a discharging port and a feeding port, and the materials are output through the discharging port under stirring of the stirring blades. The aerobic fermentation treatment system further comprises a material conveying device, and through the material conveying device, the material at the discharge port is conveyed to a feeding port adjacent to the bin body and flows into the bin body. The fermentation bin is provided with a pipeline ventilation system which is used for supplementing oxygen and is opposite to the flow direction of materials in the bin body. According to the invention, the materials are fully and completely fermented step by step, the problems that new and old materials are mixed together and the retention time of fresh kitchen waste is short when a single-bin fermentation machine structure is adopted are completely avoided, so that each batch of materials completely meet the discharge standard requirement that the produced fertilizer is more stable due to full fermentation, the recycling of organic waste materials is really realized, peculiar smell and odor are eliminated, and environmental pollution is reduced.

The invention relates to a manufacturing process of Jun glaze and Ru glaze ceramic artware, which comprises the following steps of: manufacturing slurry: putting kaolin, quartz, alkali stone and the like which are proportioned into a ball mill, and adding water for grinding to obtain the slurry; preparing glaze: putting different raw materials including melilite and the like obtained after proportioning into a ball mill, and adding water for grinding to obtain Jun porcelain glaze and Guan porcelain glaze; preparing a biscuit body: injecting the slurry into a mold for molding, manually drawing a blank for molding, fettling the blank, and conducting airing and firing to obtain a biscuit body; conducting glazing: glazing the Jun porcelain glaze and the Guan porcelain glaze at different positions of the biscuit body, trimming the biscuit body, and conducting airing; and conducting firing: firing and cooling the biscuit body in a kiln. The Jun Guan two-glaze ceramic handicraft prepared by the process is mellow in glaze, pure in glaze color and distinct and strong in contrast, in addition, the Jun Guan two-glaze ceramic handicraft can adapt to coloring of copper oxide and titanium and iron oxide by improving the basic formula of the glaze and adjusting the performance of the glaze, and then the Jun Guan two-glaze ceramic handicraft with multiple glaze colors is prepared.

The invention provides a rollaway nest removing structure for a slewing bearing, a sealing plug and an oil removing method. The oil removing structure comprises a supporting block which is suitable for being placed in a rollaway nest, and a cleaning piece; and the cleaning piece is of an annular structure, the cleaning piece is arranged on the supporting block, and the cleaning piece is suitable for being matched with the inner wall of a rollaway nest of the slewing bearing. In the structure, old lubricating grease in the rollaway nest can be cleaned up through the cleaning piece, the situation that new lubricating grease and old lubricating grease are mixed is avoided, and therefore the follow-up lubricating performance is guaranteed. According to the technical scheme, the problems that in the prior art, new lubricating grease is wasted when the lubricating grease of a slewing bearing is replaced, and the lubricating performance is affected by mixed use of the new lubricating grease and the old lubricating grease are solved.

The invention discloses a screening device of a sorting machine. The screening device comprises a driving plate, a feeding machine, a discharging gear level, a spindle, a rotating mechanism, and a screening motor. The spindle is vertically arranged, and the top end of the spindle is fixed to the center of the horizontally arranged driving plate. The bottom end of the spindle is arranged at the topof the rotating mechanism. The bottom of the rotating mechanism is arranged on the screening motor. A plurality of material openings used for placing fastening components are formed in the driving plate along the circumference. The feeding machine and the discharging gear level are fixed and are aligned to the material openings. The discharging gear level is on the downstream of the feeding machine. The screening device of the sorting machine has the beneficial effects that the automation degree is high and the structure is simple.

The invention relates to a conveying and transferring device used after hospital infusion dispensing. The conveying and transferring device comprises a bottom plate, a conveying unit, a placing frameand transferring frame sets, wherein the conveying unit is mounted on the bottom plate, the placing frame is mounted at the front end of the bottom plate and positioned above the conveying unit, and the transferring frame sets are evenly arranged at the rear end of the conveying unit. The problems that according to an existing conveying mode, a conveying crawler belt is usually adopted to convey dispensed medicine outwards from a window, but the existing conveying crawler belt is single in structure and has no blocking function, when the dispensed medicine is placed on the existing conveying crawler belt to be conveyed, after the dispensed medicine is conveyed out from the window, when personnel cannot take away the dispensed medicine in time, the medicine may fall onto the ground, consequently, medicine waste is caused, the broken medicine may give out an unpleasant smell, and in the medicine conveying process, the medicine is scattered and placed on the conveying crawler belt, so that the conveying stability is poor are solved.