44results about How to "Reduce the spread" patented technology

The invention belongs to the technical field of spraying equipment, and particularly relates to automobile bumper spraying equipment and a spraying process. The automobile bumper spraying equipment comprises a spraying mechanical arm, a support and a conveyor; the paint mist collecting device further comprises a paint mist collecting mechanism, the paint mist collecting mechanism is used for recycling redundant paint mist, and the paint mist collecting mechanism is located on the movement path of the conveyor. By arranging the paint mist collecting mechanism and adopting a deposition box and a housing to cover the bumper, the space size of spraying operation is effectively reduced, the diffusion range of sprayed paint mist is reduced, the diffusion efficiency of the paint mist to the surrounding space is effectively reduced, meanwhile, external negative pressure recycling equipment is matched, and the spraying efficiency of the bumper is improved. According to the paint mist collecting device, negative pressure extraction is conducted on the space defined by the housing and the deposition box, paint mist dispersed in air is recycled through flowing of airflow, then the collecting effect on redundant paint mist is effectively enhanced, and pollution of spraying operation to the environment is reduced.

The invention provides an inorganic refractory fiberboard and a preparation process, a material adding device and a production system thereof, and relates to the technical field of fiberboards. The inorganic refractory fiberboard preparation process is characterized in that it comprises the following steps: step one: mixing and melting various raw materials in proportion; step two: spinning the molten raw materials into fibers, and spraying additives on the fibers in a spraying manner through the material adding device as described in claim 1-6 while spinning; step three: collecting the fibers for acupuncture to form large fiber blocks; step four: sawing the large fiber blocks into fiber blocks of a required size; step five: heating and pre-calcining the fiber blocks; the raw materials in step one include the following materials in parts by weight: 33-48 parts of aluminum oxide, 45-60 parts of silicon dioxide, and 0.1-1 parts of additives, wherein the additives are composed of coconut oil diethanolamide and silica sol, with coconut oil diethanolamide accounting for 85-95% and silica sol accounting for 15-5%.

The present application relates to the field of mining technology, and specifically to a deep-sea polymetallic nodule rotary rake collection device, comprising a collection vehicle; a rake mechanism, the rake mechanism comprising a support arm and a rotary rake mounted on the support arm; the number of the rake mechanisms is two, and the two rake mechanisms are arranged in a V shape in front of the collection vehicle; a drive mechanism, the drive mechanism is connected between the collection vehicle and the support arm; and a rolling collection mechanism is arranged obliquely. The two V-shaped rake mechanisms are arranged in front of the collection vehicle, and the nodules are moved by the horizontal rotation of the rotary rake and concentrated in the middle of the two rake mechanisms, and then the nodule ore is transported to the collection vehicle through the rolling collection mechanism, and the suction pipe sucks the plume formed by the rotation of the rake mechanism to avoid the influence of excessive seabed sediment disturbance on the living environment of benthic organisms and reduce the diffusion range of the plume. The deep-sea polymetallic nodule rotary rake collection device can adjust the angle between the two rake mechanisms through the drive mechanism according to the actual situation of the mining area, and then adjust the collection range, thereby increasing the collection efficiency of polymetallic nodules.

The invention provides an auxiliary cooling device for friction welding of a ring pipe structure and a working method of the auxiliary cooling device, and belongs to the technical field of friction welding. The problems that in the prior art, due to the fact that the surface of an inner ring of a large-diameter-thickness-ratio ring material dissipates heat slowly, the cooling speed of a welding area is uneven, residual stress is increased, the strength of a welding joint is affected, and due to the fact that the surface of the inner ring dissipates heat slowly, microstructure changes are uneven, and the mechanical property of the material is affected are solved. The device comprises a tailstock side clamp, a main shaft side clamp, an inert gas connecting pipe, a gas nozzle and a cooling medium spraying mechanism, the tailstock side clamp is installed in a movable sliding table box body of friction welding equipment, a tailstock side part to be welded is clamped in the tailstock side clamp, a main shaft side part to be welded is clamped in the main shaft side clamp, and the inert gas connecting pipe is connected with the gas nozzle. An inert gas connecting pipe is arranged in the main shaft side to-be-welded part, the outlet end of the inert gas connecting pipe is connected with the gas nozzle, and a cooling medium spraying mechanism is arranged on the inner side of the tailstock side to-be-welded part. The device is mainly used for cooling the welding seam of friction welding.

The utility model relates to the technical field of automobile door panel processing, and discloses a welding tool for assembling an automobile door panel, which comprises a machine body, a fixed adjusting component and a protective component are arranged above the machine body, the fixed adjusting component comprises a rectangular frame, and a door panel body is placed on the upper surface of the rectangular frame. According to the welding tool for assembling the automobile door panel, through combination of an air cylinder and a rubber pad, stable clamping of a door panel body is achieved, the rubber pad protects the surface of the door panel from being damaged, the adaptability of equipment to door panels of different sizes is enhanced through a limiting rod and a swing piece, the height of a rectangular frame is adjusted through a traction rope, and the door panel is accurately positioned; the welding assembly supports double-face welding, the efficiency is greatly improved, a protective curtain and a collecting frame are matched with a breathable grid plate, welding smoke is effectively extracted and filtered, the air quality is improved, the health of operators is guaranteed, residues are conveniently collected and discharged through the design of a scraper, impurity retention is avoided, the welding process is optimized through the overall structure, and the production efficiency, the environmental protection property and the safety are improved.

The present invention discloses a deep-sea mining plume sedimentation-promoting device and method utilizing waste heat of equipment, the deep-sea mining plume sedimentation-promoting device comprising a ore collecting box, a heat exchanger, a tail flow discharge port and a hydraulic oil tank; a ore collecting box is provided with a ore particle collecting net box and an axial flow pump, the ore particle collecting net box is used to separate ore particles; the axial flow pump is used to drive a mixed low-temperature tail flow of seawater and sediment to enter a coolant inlet of a heat exchanger through an outlet of the ore collecting box, a hydraulic oil tank is connected to the bottom of the heat exchanger, and two coolant outlets of the heat exchanger are connected to a pair of tail flow discharge ports; the heat exchanger of the present invention can directly cool down high-temperature hydraulic oil, thereby improving the heat dissipation efficiency of the hydraulic system from the root; in addition, the bent pipeline, the baffle ring plate and the baffle disc plate inside the heat exchanger shell can extend the length of the coolant flow channel, further enhance the convective heat transfer effect, and ensure that the hydraulic oil can be fully cooled down.

The utility model discloses a dust suppression device for environmental protection, which comprises a dust suppression mechanism and an automatic adjusting mechanism, the automatic adjusting mechanism is fixedly connected to the front side of the dust suppression mechanism, the automatic adjusting mechanism comprises an automatic adjusting box, and the bottom of the back side of the inner cavity of the automatic adjusting box is fixedly connected with a motor. A first gear is fixedly connected to the output end of the motor, second gears are movably connected to the two sides of the back face of an inner cavity of the automatic adjusting box through bearings, the outer sides of the second gears are meshed with the first gear, a rotating pin is fixedly connected to the bottom of the front face of the second gear, and the surface of the rotating pin is sleeved with a transverse frame assembly. The two sides of the transverse frame assembly are in sliding connection with the inner wall of the automatic adjusting box. According to the dust falling device, the traditional mode of manually adjusting the spraying angle is changed, and the dust falling assembly is adjusted in an up-and-down inclined mode through the adjusting plate and the pin shaft, so that the accurate spraying angle cannot be easily achieved, and the unsatisfactory spraying effect cannot be caused.

The utility model relates to the technical field of cloth production, in particular to a drying device for cloth processing. Comprising a drying box, an L-shaped moving plate, a shell, a first heat supply mechanism and two limiting roller mechanisms, and penetrating holes are formed in the two ends of the drying box; the front end of the drying box is open; a linear driving mechanism for driving the L-shaped moving plate to move is mounted on the drying box; the shell is connected with the inner wall of the L-shaped moving plate, the side, away from the L-shaped moving plate, of the shell is provided with an opening, and a snake-shaped airflow channel is formed in the shell; the first heat supply mechanism is used for conveying hot air into the airflow channel; the two limiting roller mechanisms are installed at the two ends of the rear side of the drying box correspondingly, each limiting roller mechanism comprises a plurality of transverse rods and a plurality of transmission rollers, the transverse rods are installed on the drying box side by side, and the transmission rollers are rotationally installed on the transverse rods correspondingly. The drying device has the advantage of being high in drying efficiency, and the utilization efficiency of energy can be greatly improved.

The utility model relates to the technical field of precision measurement, and discloses an optical part precision measuring device, which comprises a precision measuring machine, a connecting pipe connected to the precision measuring machine and a measuring lens connected to the connecting pipe, and is characterized in that a rectangular-ambulatory-plane cover body, a top cover and a bottom cover are mutually matched; a closed environment can be formed by the concentric-square-shaped cover body, the top cover and the bottom cover, the measuring lens is completely wrapped and separated from the external environment, interference of dust and other impurities on measured data is reduced, and the measuring lens is simple in structure, convenient to operate and high in practicability.

The invention discloses a running-state-oriented memory fault risk assessment and adaptive diagnosis method and system, and relates to the technical field of memory running management.The method comprises the steps that S1, running-state memory monitoring data are collected and preprocessed; s2, generating a cross-layer difference triple set, performing difference direction judgment on a cross-layer difference triple, and identifying cross-layer inconsistent fragments; s3, constructing a cross-layer risk index set, performing cross-layer fault risk quantitative analysis on each inconsistent fragment, performing risk grade division based on a quantitative analysis result, and generating a corresponding risk grade label; and S4, carrying out risk response operation on the inconsistent fragments, carrying out response stability evaluation, and generating a final risk response result set. The problem that in the prior art, cross-layer difference sources cannot be accurately recognized in a multi-layer memory access link, so that running state fault risk judgment is prone to being interfered by access jitter and affected by virtualization scheduling offset is solved.

This invention relates to the field of civil defense shelter design. It discloses a civil defense basement with a self-ignition isolation structure for new energy vehicles, aiming to solve the problem of easy fire spread when new energy vehicles spontaneously combust in civil defense basements. It includes an inner frame, a first linear drive mechanism, a second linear drive mechanism, a telescopic isolation canopy, and a flame sensor. The first linear drive mechanism is located in the inner frame, and the second linear drive mechanism is located in the movable part of the first linear drive mechanism. The telescopic isolation canopy is deployed by the second linear drive mechanism. The flame sensor is located in the inner frame and is signal-connected to the two linear drive mechanisms. It can identify the ignition point and trigger the drive mechanisms, causing the telescopic isolation canopy to move to the ignition point and deploy. This structure can accurately isolate spontaneously combusting vehicles, reduce the fire spread range, improve the impact of fire on surrounding vehicles and the basement structure, and enhance the safety of parking new energy vehicles in civil defense basements.

The utility model provides low-noise gas compression equipment, which relates to the technical field of production equipment, and comprises an integral support plate and a gas compression noise reduction mechanism, the upper side of the integral support plate is provided with the gas compression noise reduction mechanism, and the lower side of the integral support plate is provided with a protective counterweight assembly. When the honeycomb pipe needs to be used and exhausts air outwards, the honeycomb pipe utilizes the porous cavity structure to differentiate the air, so that the damping and noise reduction effects are achieved, the wall body of the honeycomb pipe is thick, the long service life can be provided, the longer use time is achieved, the air inlet fan starts to exhaust air through the air guide pipe along the air inlet in front of the electromagnetic valve, and the air inlet fan is used for exhausting the air through the air guide pipe. And the electromagnetic valve can well control the air inflow, so that abnormal vibration caused by the fact that the air inflow cannot be treated by the gas compressor due to the fact that the air inflow exceeds the standard is avoided, the grit filter screen in front of the air inlet can filter grit sucked in air, and the problem of grit blockage is avoided.

The present invention relates to the field of dust filtration technology, and in particular to a construction dust filtration device with a low-pressure exhaust function. The present invention discloses a construction dust filtration device with a low-pressure exhaust function, comprising a shell, the inner wall of the shell is provided with a support mechanism, and the interior of the shell is divided into a power chamber, a filter chamber and a collection chamber from top to bottom by the support mechanism; the support mechanism comprises an upper plate and a lower plate fixedly connected to the shell, the upper plate is located at the top of the shell, and the lower plate is located at the bottom of the shell; and an air intake pipe, two air intake pipes inserted opposite to each other form a group of air intake mechanisms; and a dust filter and a bag binding mechanism. The present invention accumulates and compresses scattered dust into dust blocks, improves the efficiency of cleaning dust in the filter bag, reduces the diffusion range of dust in the process of cleaning the filter bag, and ensures that construction dust filtering operations can always be carried out in the filter chamber.

The present application relates to a kind of tunnel fire detection method, device and medium, wherein the method comprises the following steps: obtaining historical tunnel sensor dataset and constructing tunnel fire image dataset;Three-stage neural network architecture including trigger network, risk assessment network and complete detection network is constructed, trigger network carries out all-weather abnormal monitoring to the whole tunnel;Risk assessment network is activated when potential risk is detected by trigger network;Complete detection network is activated when high risk is determined by risk assessment network;The three-stage neural network is trained using historical tunnel sensor dataset and tunnel fire image dataset, and the trained fire detection model is obtained;Real-time acquisition tunnel video and sensor data, input trained fire detection model, and obtain tunnel fire detection recognition achievement.Compared with prior art, the present application solves the problems of low tunnel fire detection accuracy, serious waste of computing resources, insufficient real-time performance and high false detection rate.

The present application relates to the technical field of structured light three-dimensional topography measurement, and particularly relates to a phase unwrapping method and system based on event camera correction and risk assessment. The present unwrapping method relies on local circular domain redistribution correction to obtain high-quality wrapped phase, and then obtains pixel risk indicators through multi-dimensional residual risk assessment; comprehensive reliability is constructed by fusing modulation degree, two types of confidence, direction consistency and residual risk, and seed pixels are screened relying on triple thresholds of comprehensive reliability, residual risk and modulation degree. The neighborhood edge weight is set in combination with reliability and stripe prior, a global energy function containing seed constraints is established, and the absolute phase is converted after the phase order is optimized and solved. In the unwrapping method, multi-parameter constraints are realized relying on pre-correction and risk assessment, the disadvantages of single-index screening are broken through, distortion error diffusion is suppressed, complex working conditions such as reflection and high-speed motion are adapted, and the phase calculation and three-dimensional measurement precision of dynamic scenes are effectively improved.

The utility model relates to a fan box, in particular to a noise reduction type fan box. The noise reduction type fan box comprises a machine box body and further comprises sound insulation cotton I, sound insulation cotton II, a connecting plate, a connecting frame, a damping spring I and the like, the side walls of the left side and the right side in the machine box body are connected with the sound insulation cotton I, and the side walls of the left side and the right side outside the machine box body are connected with the sound insulation cotton II. Connecting plates distributed left and right are installed on the lower portion of the case body and slide in the connecting frame, and at least two damping springs I are connected between the connecting plates and the connecting frame. By arranging sound insulation cotton I, a connecting plate, a damping spring I and the like, the sound insulation cotton I and sound insulation cotton II play a sound insulation role, the diffusion range of noise in the case body is reduced, the connecting plate moves downwards to extrude the damping spring I, the damping spring I is compressed to play a damping role, then damping is conducted on the case body in the vertical direction, and the damping effect is improved. And noise caused by overlarge vibration amplitude of the case body is avoided.

The invention relates to the technical field of copper powder screening and dust reduction equipment, and discloses a copper powder screening and dust reduction equipment, including a screening bin with a feed port at the upper end, a dustproof bin for dust reduction is sleeved on the outside of the screening bin, a polarizing member for assisting its swing is installed on one side of the dustproof bin, a screening and refining bin for screening materials is installed at the lower end of the dustproof bin, a base is installed at the lower end of the screening and refining bin, a coupling component for supporting the screening and refining bin is installed between the screening and refining bin and the base, the screening and refining bin includes a filter bin docked and installed at the lower end of the dustproof bin, and a transition bin is installed at the lower end of the filter bin, a bulk bin is docked and installed at the transition bin, a coupling component is installed at the lower end of the bulk bin, and an opening is opened on the upper end surface of the filter bin that is adapted to the lower end of the dustproof bin. The invention solves the problem that the copper powder screening process cannot be dusted due to the operation that the copper powder is directly scattered on the reference ground after screening in the current copper powder screening process, and enhances the protection of the health of operators.

The invention relates to the technical field of fabric preparation, in particular to a preparation device for antibacterial nano-silver fabric, comprising a dipping box, wherein a conveying mechanism is arranged in the dipping box, the conveying mechanism is used to convey fabric, a stirring mechanism is arranged inside the dipping box, the stirring mechanism is used to stir and mix the nano-silver solution inside the dipping box, and an isolation sleeve is arranged at the fabric inlet position of the dipping box; the invention provides an isolation sleeve at the fabric inlet position, which is beneficial to reducing the influence of the stirring effect on the solution inside the isolation sleeve on the one hand, and on the other hand, in the process of fabric inlet, under the action of buoyancy, the fluff and thread ends adhered to the surface of the fabric will be separated from the fabric and float on the water surface, and the isolation sleeve can be arranged to isolate the impurities such as the fluff and thread ends, reduce their diffusion range, and thus be beneficial to centralized cleaning of the fluff and thread ends.

The utility model discloses ventilation equipment for a paint production workshop, which comprises a main frame, a shell is fixed on the main frame, and the shell is provided with an outer support frame, an outer filter screen and a trapezoidal channel. The outer supporting frame is rotatably provided with a fan, the main frame is slidably provided with a side plate, the side plate is fixed to the inner filter screen through a supporting block and a bottom plate, honeycomb activated carbon is placed on a mounting plate on the side plate, and the main frame fixes a top rod. The equipment further comprises an inner supporting frame, a storage battery, an electric control unit, a motor and an inner shell are fixed on the inner supporting frame, and the inner shell divides a gas channel. The equipment is mounted on a workshop window frame, can filter, adsorb and purify gas, has the advantages of low cost, flexible movement, stable structure, reliable ventilation and the like, and effectively solves the ventilation problem of a paint production workshop.

The utility model belongs to metal pipe field, concretely is a kind of outer wall opening device for metal pipe processing, including work bench, a pair of fixed plate is fixedly connected to work bench top;Clamp plate is arranged on the fixed plate upper portion;The fixed plate and clamp plate are connected by multiple bolts;Support frame is fixedly connected in the middle of work bench;First air cylinder is fixedly connected to support frame top;Round bar is fixedly connected to the output end of first air cylinder;Square plate is fixedly connected to the end of round bar;By making baffle and elastic cloth can be in use opening assembly processing metal pipe by the blocking of baffle and elastic cloth to intercept the diffusion of debris, make it in diffusion by the interception of baffle and elastic cloth and stay in baffle inside, thereby reduce diffusion range, simultaneously by the rotation after the contact of magnetic plate can be guided to metal pipe by the angle of magnetic plate rotation after contact when and metal pipe contact, so that metal pipe enters baffle middle portion by the guidance of magnetic plate and speed up the speed of entering baffle middle portion.

The present invention discloses a black and odorous water body dredging system and method. The method comprises the following steps: setting an enclosure dredging unit in a river section to be dredged; determining the thickness of the surface sediment that is prone to black and odor through investigation, sampling and analysis, hydraulically flushing the surface sediment in the enclosure dredging unit, so that the surface black and odorous sediment is fully floated to form a mud-water mixture, and quickly extracting the mud-water mixture from the enclosure dredging unit, separating the non-polluted coarse sand particles in the mud-water mixture by physical precipitation, and then discharging the remaining mud-water mixture containing the black and odorous sediment into a sewage treatment facility. The system comprises an enclosure dredging unit, a flushing system, a sand-water separation system and a gravity drain pipe arranged in the water body to be dredged. The black and odorous water body dredging system and method provided by the present invention have strong dredging pertinence, convenient operation, small working space, flexible movement, low dredging cost, and can be well applied to the dredging project of the surface sediment that is prone to black and odorous sediment in small and medium-sized rivers.

The present invention belongs to the field of soil fertilization, and specifically is an agricultural multi-terrain fertilization equipment, including a cart, a driving component, a sowing component, a stockpile bin and a splashing plate. With the development of production and planting industry, the planting area is gradually merged from independent individuals into a whole. The mechanized operation method can greatly improve the sowing and fertilization efficiency of crops, and save human resources at the same time. However, in the process of plant sowing, the spreading range and sowing depth of the fertilizer affect the germination of seeds and the normal growth of plants. Crop fertilizers are often granular. If they are directly exposed to the air after spreading, the volatilization degree of the fertilizer increases, which is not conducive to soil absorption and affects the normal nutritional needs of the subsequent growth of seeds. If the fertilizer spreading range is too large, the plants will not get sufficient nutritional supply. If the fertilizer spreading range is too concentrated, root burn will occur.

The application discloses the technical field of poultry killing equipment and relates to a slaughtering and processing device for large geese, which comprises a slaughtering table, the surface of the slaughtering table is provided with two groups of slaughtering panels, the two groups of slaughtering panels are symmetrically arranged, slaughtering sewage can flow into the slaughtering table from the gap between the two groups of slaughtering panels, a filtering device is arranged in the slaughtering table, the filtering device comprises an upper collecting layer and a lower collecting layer, the upper collecting layer and the lower collecting layer are both made of flexible plastic, the two ends of the upper collecting layer and the lower collecting layer are fixed in the slaughtering table through liquid guide assemblies, the liquid guide assemblies can ensure that the sewage slowly flows into the two side edges of the lower collecting layer and do not interfere with the normal discharge speed of the sewage, a supporting assembly is arranged between the upper collecting layer and the lower collecting layer and is fixedly connected with the slaughtering table, the slaughtering table can realize sedimentation and complete the stripping of biological tissues and blood under the condition that the slaughtering is not interfered with, so that the biological tissues and blood can be quickly collected, packaged and processed.

The utility model relates to the field of electric power storage, in particular to an energy storage device applied to a novel electric power system. The technical problem of the utility model is that an existing electric power storage device does not have an anti-explosion function, so that the surrounding environment is damaged due to explosion hazards. According to the technical scheme of the utility model, the energy storage device applied to the novel electric power system comprises a fireproof housing and the like. The fireproof shell is formed by splicing an upper part and a lower part; heat dissipation holes are formed in four walls of the upper part and the lower part of the fireproof shell; the top and the bottom of the storage power supply are attached to the upper part and the lower part of the fireproof shell, and a certain distance exists between the upper part and the lower part of the fireproof shell and the periphery of the storage power supply to form a space for heat dissipation. The space between the fireproof shell and the storage power source is divided into four areas through the fireproof cloth, a large fire behavior is divided into four small fire behaviors, and weakening of the fire behavior by fire extinguishing powder is facilitated.

The utility model discloses a magnetic suction type scrap collecting mechanism of a hammerhead corner polishing device, which relates to the technical field of scrap collection and comprises a mounting mechanism, the upper part of the mounting mechanism is fixedly connected with an adsorption mechanism, the mounting mechanism comprises a mounting base, and the upper part of the mounting base is fixedly connected with a connecting outer pipe. Metal chippings are adsorbed through the first electromagnetic suction plate and the second electromagnetic suction plate, the content of the metal chippings in air is reduced, the metal chippings moving upwards are blocked through the baffle, the diffusion range of the metal chippings is reduced, and the metal chippings can be fully adsorbed through the first electromagnetic suction plate and the second electromagnetic suction plate.

The invention provides a short video tracing method and system, a storage medium and electronic equipment, and the method comprises the steps: obtaining an access request, and judging whether the access request is legal or not; if the access request is illegal, extracting a target URL feature from the access request, and traversing all URL honey points in a preset URL knowledge base according to the target URL feature to obtain a similarity value between the target URL feature and the URL feature of any URL honey point; screening out a target URL honey point from a preset URL knowledge base according to the similarity value, and obtaining IP address information, port information and URL path information of the target URL honey point; and modifying the access request according to the IP address information, the port information and the URL path information of the target URL honey point. According to the method and the device, some specific access requests are forwarded, so that the host deployed with the target URL honey point can attract an attacker to actively attack the target URL honey point by using the access request, the target URL honey point is easily and successfully trapped, and the network defense effect is improved.

The utility model discloses a kind of double-row hole oil flinger fuel flow measuring devices, including support frame, outer collector, inner collector. Outer collector is installed in support frame;Inner collector is fixed in outer collector;Outer collector and inner collector are including oil collection end and outlet end, and the oil collection end of outer collector protrudes in the oil collection end of inner collector;Outer collector is close to inner collector, and fuel flow channel is left between the two, double-row hole oil flinger is closely attached to inner collector;The second row hole of double-row hole oil flinger is located in the oil collection end of inner collector, and the first row hole of double-row hole oil flinger is located in the oil collection end of outer collector;Double-row hole oil flinger one end is communicated with hollow shaft. The utility model is compact by modularization design, oil mist is isolated from source, without modification test bed, significantly improve the measurement accuracy and fuel collection rate, and easy to operate, data is reliable.

The invention provides an avian infectious bronchitis virus color visualization RAA rapid detection method, and relates to the technical field of veterinary diagnosis, and the method comprises the following steps: sample collection and treatment: collecting disease material samples representing respiratory tract symptoms, renal lesions or clinical symptoms of egg drop, extracting the samples, and carrying out sample treatment; carrying out nucleic acid extraction and reverse transcription, and carrying out RNA extraction and cDNA synthesis; carrying out conventional PCR detection; constructing a positive plasmid; the method has the advantages of rapidness, sensitivity, specificity, simplicity, convenience, low cost and the like, is suitable for rapid screening of the IBV in places with limited conditions, such as grassroots farms and veterinary stations, can be matched with laboratory nucleic acid electrophoresis verification to realize effective connection of primary screening and confirmation, and provides a new technical means for early discovery of the IBV and prevention and control of epidemic diseases.

The invention provides an auxiliary cooling device for friction welding of solid bars and a working method of the auxiliary cooling device, and belongs to the technical field of friction welding. The problem that after welding of existing friction welding equipment is finished, due to the fact that the residual temperature of a welding seam is too high, a welded workpiece needs to be transferred to a heat treatment procedure for quenching treatment, and the strength of the welding seam cannot be improved in time is solved. The device comprises a main shaft side box body, a movable sliding table box body, a machine tool body, a tailstock fixing seat, a tailstock side to-be-welded part and a gas spraying mechanism, the main shaft side box body is installed on one side of the machine tool body, the movable sliding table box body is installed on the other side of the machine tool body in a sliding mode through a movable sliding table rail, and a main shaft side clamp is installed in the main shaft side box body through a main shaft fixing seat. The tailstock side clamp is installed in the movable sliding table box body through the tailstock fixing base, a to-be-welded workpiece on the tailstock side is clamped and fixed through the tailstock side clamp, and the gas spraying mechanism is arranged on the outer side of a welding area of the to-be-welded workpiece on the tailstock side. The device is mainly used for protecting a welding area during welding.

The utility model relates to the technical field of municipal construction, in particular to a ground leveling vehicle for municipal construction. The trundles are symmetrically arranged on the two sides of the shell and rotationally connected with the shell; the spraying mechanism is connected with the shell body; the flattening mechanism is connected with the shell body; wherein the flattening mechanism comprises a control assembly, and the control assembly is fixedly connected to the inner side of the shell and connected with the spraying mechanism; the leveling assembly is connected with the shell in a sliding manner; the transmission assembly is arranged between the leveling assembly and the control assembly, the spraying mechanism is arranged and matched with the flattening mechanism, repeated punching on the ground can be achieved, watering on the ground and dust absorption can be achieved in the flattening process, and the good dust falling and removing effect is achieved; and large-range diffusion of dust in the ground leveling process is avoided.