88results about How to "Promote escape" patented technology

The invention belongs to the technical field of welding, and discloses a dissimilar metal power modulation galvanometer laser welding method which comprises the following steps: finely cleaning a 6061 aluminum alloy and a 304 stainless steel plate by using acetone, and then airing for more than 20 minutes; the aluminum steel sheet is assembled, pressed and fixed on a welding test platform in a steel-up-aluminum-down mode; the position of the welding test platform is adjusted, argon serves as welding protection gas, and a protection gas nozzle is arranged to be aligned with a welding pool area; laser welding parameters are set, a laser power modulation mode is set to be a gradient power mode, and the gradient power mode is to regulate and control phase point laser power in a circular scanning track in the advancing direction of a welding seam; a welding test is carried out in the mode that a galvanometer laser head is fixed and a welding test platform is moved, and a laser and the welding test platform are synchronously started and stopped; and the protective gas is started 5 seconds before the laser is started, and after the laser is stopped, the protective gas is stopped lagging for 10 seconds so as to continuously protect the welding seam and prevent oxidation.

The invention relates to the technical field of thrust bearings, in particular to a preparation method of a tin-based babbitt metal bushing and the tin-based babbitt metal bushing. The preparation method of the tin-based babbitt metal bushing comprises the following steps that a transition layer containing tin is arranged on the surface of a thrust pad, plate-strip-shaped tin-based babbitt metal is arranged on the transition layer, pressure and ultrasonic waves are applied to the surface of the plate-strip-shaped tin-based babbitt metal, and welding is completed through ultrasonic pressure welding. According to the method, the tin-containing transition layer is arranged on the surface of the thrust pad, the thrust pad bushing is rapidly prepared through ultrasonic pressure welding, and element diffusion and hydrogen element escape among the bushing, the transition layer and the steel backing and atomic lattice distortion and electron movement between the babbitt metal bushing and the transition layer are promoted through the coupling effect of extrusion force and high-frequency vibration; the plate-strip-shaped tin-based babbitt metal is welded to the surface of the thrust pad to form the bushing, the prepared babbitt metal bushing coating is uniform and compact, the preparation technology is greatly simplified, and environment friendliness is achieved.

The invention discloses a Trop2 targeting chimeric antigen receptor macrophage as well as a preparation method and application thereof. The macrophage contains a specific CAR (chimeric antigen receptor) targeting Trop2 and a blocking agent for blocking an immunosuppression signal; the amino acid sequence of the Trop2 specific CAR targeting the breast cancer is as shown in SEQ ID NO. 1; the nucleotide sequence of the mRNA of the specific CAR of the targeted Trop2 is as shown in SEQ ID NO. 2. According to the invention, LNP is adopted to co-deliver CAR mRNA and TLR agonists, and macrophages are edited in vivo to generate CAR-macrophages expressing Trop2 in situ, so that a tedious engineering cell in-vitro preparation process is omitted, and potential whole-body toxic and side effects caused by immune cell system reinfusion are avoided.

The invention discloses a manufacturing method of a second type low-smoke halogen-free standard wall cable of a motor train unit, which relates to the technical field of cables and comprises the steps of conductor preparation, insulation extrusion, buffer isolation layer forming, shielding layer manufacturing, reinforced core preparation and installation, sheath extrusion and post-processing. The conductor is prepared by layering and twisting cerium-titanium alloying copper monofilaments and treating the cerium-titanium alloying copper monofilaments through a nano ceramic coating; post-processing detection shows that the cable is small in bending radius, low in electrical and mechanical performance attenuation rate after repeated bending, excellent in electrical performance, mechanical performance, fireproof performance, environmental protection performance and the like, capable of effectively meeting the cable use requirements under complex working conditions of the motor train unit, capable of guaranteeing the operation reliability and safety, capable of improving the comprehensive performance of the cable and wide in application range. The cable is suitable for power and signal transmission in rail transit fields such as motor train units.

The invention relates to the technical field of metal welding, and discloses a welding process of high-strength medium alloy carburizing steel, which comprises the following steps: preheating the whole weldment to 200-250 DEG C before welding; the overall temperature of a weldment is kept at 200-250 DEG C in the welding process; and after welding is completed, a weldment is integrally heated to 250-300 DEG C, and heat preservation is conducted for preset time. According to the scheme, a new preheating technology in the welding technology is provided for the high-strength medium alloy carburizing steel, overall preheating is adopted before welding, during welding and after welding instead of local preheating, the temperature ranges before welding and during welding are kept consistent, the temperature range after welding is slightly higher than the temperature ranges of the first two stages, it is advantageously kept that the temperature of a mother part in the whole welding stage is stable and uniform, and the welding quality is improved. The temperature gradient in the whole welding process is reduced to the minimum, and through appropriate process steps and welding parameters, it is guaranteed that weld joints do not have welding defects, and meanwhile the mechanical property requirements of products are met.

The utility model discloses an energy storage battery fire-fighting device which comprises a placing cabinet and a fire-fighting box, a motor and an audible and visual alarm are installed on the upper surface of the fire-fighting box, a smoke and fire detector is installed on one side face of the fire-fighting box, a two-way screw rod is installed in the fire-fighting box, an auxiliary gear and a moving block are installed on the peripheral side face of the two-way screw rod, and the moving block is connected with a push-pull rod. A baffle and a discharging plate are connected into the fire-fighting box, and the motor is connected with a main gear. By arranging the two-way screw rod, the moving block, the push-pull rod and the discharging plate, when a battery pack is on fire, the smoke and fire detector detects smoke and fire and transmits an electric signal to the audible and visual alarm and the motor, the audible and visual alarm gives an alarm to remind a worker, the motor drives the two-way screw rod to rotate through meshing between gears, and the discharging plate is arranged on the two-way screw rod. And the two moving blocks move back to back, the moving blocks push the discharging plate downwards through the push-pull rod, so that phosphate slides into the containing cabinet along the discharging plate, fire extinguishing is carried out, and economic losses can be effectively reduced.

The utility model discloses a steel door with an automatic alarm function, which comprises a door frame and is characterized in that a steel door is hinged to the inside of the door frame, a smoke alarm is arranged on the surface of the steel door, an escape door is hinged to the inside of the steel door, a driving assembly is arranged inside the steel door, and the smoke alarm is arranged on the surface of the escape door. Through the arrangement of the smoke alarm, smoke generated by combustion can trigger the smoke alarm, so that the smoke alarm gives out an alarm sound to remind people in a building, through the arrangement of the explosion-proof glass, people outside the steel door can conveniently observe the internal fire condition, through the arrangement of the fireproof filler and the flame-retardant layer, heat transmission can be reduced, and the fire-proof effect is improved. And through arrangement of a driving assembly, a second bevel gear rotates, then a two-way lead screw is driven to rotate, a moving plate is moved, then a clamping block is separated from a clamping groove, an escape door can be opened, and indoor people can escape conveniently.

The invention provides a carbon fiber thermoplastic composite box and a preparation method, and relates to the technical field of box forming. Comprising the following steps: S1, arranging carbon fiber thermoplastic prepregs according to a set layer number to obtain a laminated green body, and preheating the laminated green body; s2, carrying out hot press molding on the laminated green body areas forming the box body flat plate parts, and keeping a softening state between the adjacent areas to obtain box body flat plates which are dispersedly arranged on the laminated green body; s3, carrying out hot stamping on the laminated blank body in the softened state to obtain a bulge in the same stamping direction; and S4, the protruding part of the laminated blank is heated and bent, and the box body structure is defined by the box body flat plates. Due to the fact that all the components of the box body are cured and formed step by step, that is, uncured hole channels are reserved in the laminated green body in the first hot press forming process, resin flowing and gas escaping in the laminated structure are facilitated, and therefore microdefects are eliminated, and the stability of the product performance is improved.

The invention belongs to the technical field of soil improvement, and particularly relates to a preparation method and processing equipment of a soil conditioner. A biomass raw material is added into monocalcium phosphate to be mixed, then the mixture is added into a material conveying pipe and passes through a pyrolysis device, the pyrolysis device comprises three heaters used for controlling three different temperature areas, the pyrolysis temperature is gradually increased to 500 DEG C from 300 DEG C, generated biomass charcoal is cooled and enters a cyclone separator to be mixed with humus soil, and the humus soil is separated from the biomass charcoal. After mixing, the mixture enters a collector to be continuously stirred and mixed, and meanwhile, liquid bio-oil generated by cooling in the cooling tower is sprayed to the collector through a spraying system to be mixed with the mixture; according to the present invention, the carbon fixation ability of the soil is improved, the soil structure is improved, a variety of plant growth elements are provided, the soil fertility is improved, the growth of microorganisms is promoted, the soil improvement effect is improved, the occurrence of plant diseases and insect pests is inhibited, and the healthy growth of crops is promoted.

The utility model discloses a slewing bearing structure of an excavator, which comprises a slewing bearing inner ring and a slewing bearing outer ring, the slewing bearing inner ring is connected with the slewing bearing outer ring, and an inner tooth structure is arranged on the inner side wall of the slewing bearing inner ring. The end face of the slewing bearing inner ring is provided with first installation holes which are evenly distributed on the slewing bearing inner ring, the end face of the slewing bearing outer ring is provided with a second installation hole, a third installation hole, a fourth installation hole and a fifth installation hole, and the excavator protection device achieves the functions of protecting an excavator and facilitating entering and exiting and escaping.

This utility model provides an auxiliary casting device for casting molds, relating to the field of casting equipment technology. Specifically, it includes two bases. One base has an L-shaped fixing seat fixedly installed on one side. Two hydraulic cylinders are mounted on the top of the L-shaped fixing seat, and both cylinders penetrate and are fixedly connected to the L-shaped fixing seat. The other base is slidably connected to the L-shaped fixing seat. Two pedestals are positioned between the two bases, and two casting mold bodies are mounted on the sides of the two pedestals that are close to each other. This application uses a servo motor output to drive a fixed rod and a cam to rotate, and a return spring to push the casting mold bodies fixed on the pedestals back to their original position, generating a periodic thrust to achieve auxiliary vibration of the mold. This vibration effectively breaks the bubble structure inside the casting liquid, causing the bubbles to escape, and simultaneously pushes the casting liquid to flow fully into the corners and gaps of the mold cavity, ensuring that the casting liquid is evenly distributed within the mold.

This disclosure provides a light-emitting diode and a method for manufacturing the same. The light-emitting diode includes an epitaxial structure; the epitaxial structure has a plurality of protrusions located on a first surface, and the epitaxial structure also has a mesh-like isolation groove formed on a second surface and extending toward the first surface, the epitaxial structure being divided into a plurality of epitaxial units by the isolation groove; the bottom of the isolation groove is spaced apart from the first surface; in a direction perpendicular to the second surface of the epitaxial structure, the connection between the sidewall of the isolation groove and the bottom surface of the isolation groove corresponds to the middle portion of the protrusion; the first surface and the second surface are two opposite surfaces of the epitaxial structure.

This utility model discloses a novel window breaker, including a window breaking component and a cutting component. The cutting component includes a connecting block, a telescopic spring, a limiting plate, a button, and a blade. Operation via the button controls the blade to extend for cutting ropes, safety belts, etc. The window breaking component has a striking pin, a pressing element, an outer spring, and an inner spring. The striking pin is located inside the pressing element; the outer spring controls the pressing element's reset, and the inner spring controls the striking pin's extension. In use, the tube is held, the pressing element is pressed against the glass, and then the tube is pressed, causing the striking pin to eject and break the window. Upon ejection, the striking pin rotates due to the structure of the second guide groove, improving window breaking efficiency. The advantages of this technical solution are: it combines window breaking and cutting functions, addressing various emergency situations; it is easy to operate, both cutting and window breaking are simple and easy to learn; the structure is compact, making it easy to carry and store; the blade and striking pin will not be accidentally triggered when not in use; and it is highly efficient at breaking windows, quickly breaking glass of varying thicknesses.

The application discloses a lithium battery diaphragm extraction drying device and a use method, relates to the technical field of lithium battery diaphragm production, and comprises a machine shell, a rotating roller group for conveying diaphragms is arranged in the machine shell, a bubble removing assembly is arranged on the conveying path of the battery diaphragm, the bubble removing assembly comprises a vibrating cylinder, a vibrating piece is slidably arranged on the inner wall of the vibrating cylinder, a pressing piece for pressing the diaphragm is arranged on one side of the vibrating cylinder, and a driving assembly for driving the vibrating piece and the pressing piece to move synchronously is arranged at one end of the vibrating cylinder; the bubble removing assembly of the application is close to the diaphragm through the vibrating cylinder, the separation of the bubble and the diaphragm is assisted by vibration, and the bubble removing efficiency is effectively improved; the vibrating piece is slidably arranged, the vibrating position can be flexibly adjusted, direct vibration operation can be conveniently performed on the bubble position, and then the bubble can be conveniently dispersed and separated.

The present invention relates to the field of laser processing technology, and in particular to an electromagnetic-assisted underwater laser additive device and method, the device comprising a laser additive component, an underwater dry zone component, a rotating electric field component, a rotating magnetic field component and an induction heating coil. The present invention arranges a rotating electric field and a rotating magnetic field inside and outside the underwater dry zone component respectively, and the electromagnetic field action area can change with the processing position. During the underwater additive manufacturing process, the molten pool is always at the center of the electromagnetic field action, and can stably apply electromagnetic stirring to the molten pool to improve / accelerate the flow of the molten pool. On the one hand, the flow improvement can facilitate the escape of bubbles and improve the density of the component. On the other hand, accelerating the flow of the molten pool can break up coarse dendrites, increase the nucleation points in the molten pool, and achieve the purpose of grain refinement. In this process, the element distribution between the dendrites will be more uniform. It has a good effect on the uniformity of the structure and defect control of the molded parts.

The forest protection device comprises a first protection structure, a second protection structure, a third protection structure and a fourth protection structure, the first protection structure, the second protection structure, the third protection structure and the fourth protection structure are all arranged on the periphery of a machine frame of the excavator, and the first protection structure is arranged on the edge of the right side of the excavator. The second protection structure is arranged at the top of the rear end of the excavator, the third protection structure is arranged at the edge of the left side of the excavator, and the fourth protection structure is arranged on the outer side of a cab of the excavator.

The utility model discloses a smoke alarm with a mechanical emergency lighting lamp, which relates to the technical field of smoke alarm and comprises a fixing box, an upper cover is fixedly connected onto the fixing box, four corners of the fixing box are fixedly connected with fixing sleeves, locking mechanisms are arranged at the fixing sleeves, and the mechanical emergency lighting lamp is fixedly connected with the fixing sleeves. The fixing box is fixedly connected to the fixing frame through a locking mechanism, a fixing part for fixing the locking mechanism is arranged on the fixing frame, a smoke alarm component is arranged in the fixing box, and the side face of the fixing box is connected with an illuminating lamp through an angle adjusting module; smoke is detected in time through the smoke alarm component, an alarm is given out, precious time is won for people to escape, meanwhile, the circuit board controls the illuminating lamp to emit light, people can conveniently distinguish the escape direction, and escape is facilitated; the locking mechanism and the fixing part are matched with each other, the fixing box is fixed to the fixing sleeve, installation is easy and convenient, and more time needed by installation is saved.

The utility model discloses a perch out-of-season breeding temperature control device which comprises an impounding reservoir and a fishpond arranged on one side of the impounding reservoir, a controller is installed on the outer surface of the impounding reservoir, and an automatic water storage structure used for pumping underground water into the impounding reservoir to keep the water level of the impounding reservoir is arranged on the impounding reservoir. By means of the automatic water storage structure and the water treatment assembly, low-temperature underground water can be automatically pumped into the water storage pool, oxygenation and aeration can be conducted on the pumped underground water, escape of nitrogen and carbon dioxide in water is accelerated, and the weever can be effectively prevented from suffering from the bubble disease; the water temperature in the fishpond can be monitored, once the temperature is too high, low-temperature underground water is automatically injected into the fishpond, the water temperature in the fishpond is reduced to be within the range suitable for growth of perches, meanwhile, through the mild water temperature adjusting mode, rapid change of the water temperature is avoided, the perches can gradually adapt to the water temperature change, and the perches can grow more conveniently. And stress reaction caused by sudden drop of water temperature is avoided.

The utility model discloses an ultrasonic cleaning tool for small special-shaped parts, and relates to the technical field of ultrasonic cleaning, the cleaning tool comprises two side plates which are arranged at an interval and are connected through a connecting rod, and a containing space is formed between the two side plates; at least one transverse rod used for containing the small special-shaped parts is arranged in the containing space, the two ends of the transverse rod are detachably connected with the two side plates respectively, and a plurality of clamping grooves different in size are formed in the transverse rod at intervals. According to the tool, the problems of cleaning dead corners, part collision and low cleaning efficiency are solved, and high-uniformity and high-stability batch cleaning is achieved; the tool is of a four-face hollowed-out structural design, it is guaranteed that ultrasonic energy evenly penetrates through the tool, and cleaning fluid circulation and bubble escape are accelerated. Due to the detachable design of the cross rods and the side plates, notches of different specifications can be designed on each face according to the sizes of cleaning elements needing to be placed, and the practicability of the cleaning tool is improved.

The utility model discloses a four-terminal resistor which comprises a resistor alloy, a base body for bearing the resistor alloy, an adhesive film positioned between the resistor alloy and the base body, end face electrodes positioned at two ends of the bottom of the resistor alloy and two voltage sampling points positioned at the bottom of the resistor alloy, and the two voltage sampling points are positioned between the end face electrodes at the two ends. According to the four-terminal resistor, the voltage acquisition point is isolated from the current input point, so that signal acquisition deviation caused by current and voltage signal interference is avoided.

The invention discloses a hydroxyalkylamide curing agent and a preparation method thereof, and belongs to the technical field of powder coating curing agents, the curing agent comprises a curing component, the curing component comprises a component A and a component B, an S < i-O-S chain segment is introduced into the component A through 1, 1, 3, 3-tetramethyldisiloxane, and the component B is N, N, N ', N'-tetra (2-hydroxyethyl) adipamide. The curing agent further comprises an anti-yellowing component, and the anti-yellowing component comprises an antioxidant and an ultraviolet light absorber. And compounding the curing component and the anti-yellowing component according to a ratio to obtain the hydroxyalkylamide curing agent. In the application process, the curing agent not only can improve the damp-heat resistance, boiling resistance and thick coating performance of a coating film, but also can improve the yellowing resistance of the coating film.

The invention provides a multi-kettle series continuous polymerization system and a production method, and relates to the technical field of chemical production equipment. The system comprises a plurality of polymerization kettles which are connected in series, the polymerization kettles are sequentially connected in series through overflow pipes, and at least one overflow pipe is arranged in each polymerization kettle; the overflow pipe extends downwards from the inside of the polymerization kettle and is led out from the bottom or the side wall of the lower part of the polymerization kettle, the overflow pipe of the previous-stage polymerization kettle is led to a feeding hole of the next-stage polymerization kettle, and the overflow pipe of the last-stage polymerization kettle is led to a post-treatment system; a potential difference exists between the adjacent polymerization kettles; and the overflow pipe forms an inclined angle between a part or all of the micro-branched pipe sections of the main body section in the polymerization kettle and a plumb line. Stable liquid level control and stable material transmission are achieved through a pure mechanical overflow pipe structure, an interstage pump and a complex detection control instrument are not needed, and equipment investment, maintenance cost and energy consumption are reduced; the material flows downwards naturally, gas-liquid entrainment is reduced, the pressure fluctuation resistance is high, and operation is stable and reliable.

A method of producing a liquid organic hydrogen carrier (LOHC). The method includes delivering a hydrocarbon feed stream rich in aromatic hydrocarbons to a thermal treatment unit to convert olefin compounds to heavier compounds by a dimerization reaction and generate a dimerized feed stream; delivering the dimerized feed stream to a fractionation unit to form a light fraction stream and a heavy fraction stream at a cut point of 115°C to 150°C; and delivering the light fraction stream to an aromatic hydrocarbon extraction unit to form an aromatic compound stream and a non-aromatic compound stream. The method also includes delivering the aromatic compound stream and an input hydrogen stream to a hydrogenation unit to form a hydrotreated effluent stream; and delivering the hydrotreated effluent stream to a separator to remove unsaturated compounds, thereby isolating a saturated compound as a LOHC stream.

The utility model discloses protective safety laminated glass for buildings, which comprises a window frame, glass plates and rapping bars, the glass plates in double-layer design are erected on the inner wall of the window frame, a partition plate is mounted at one corner of the window frame, the rapping bars are arranged on the window frame along the inner side of the partition plate, and the rapping bars are distributed along the corners of the glass plates. A knocking head penetrates into one end of the knocking rod, a connecting plate is movably connected to the outer wall of the end, along the knocking head, of the knocking rod, and a first connecting shaft and a second connecting shaft penetrate into the two ends of the connecting plate correspondingly. When the protective safety type laminated glass for the building is used, the double-layer glass plate breaking structure adopts a first-level lever structure design, the requirement of a user for breaking the whole double-layer glass plate is met, convenience is brought to people who escape from or rescue a room subsequently, the double-layer glass plate breaking structure serves as a prevention structure, a good safety protection effect is achieved, and the service life of the double-layer glass plate is prolonged. The situation that the double-layer glass plate is difficult to break due to disasters is reduced, and convenience is brought to follow-up rescue or escape.

The present application relates to the technical field of heat treatment, in particular to a sliding rail sleeve heat treatment clamping device and method. It comprises a support base, a wedge-shaped base, a fork-shaped pressing plate and a lifting support column, one end of the lifting support column is fixedly connected with the central area of the support base, the fork-shaped pressing plate is installed in cooperation with the wedge-shaped base to clamp the flange end of the sliding rail sleeve; a plurality of wedge-shaped bases are radially arranged at the peripheral positions of the support base with the lifting support column as the axis. The purpose of the sliding rail sleeve heat treatment clamping device and method is to solve the problem that the water quenching effect of the tail of the sleeve is poor due to the existence of air / steam retention in the traditional sleeve heat treatment process.

The invention relates to a method of operating a vehicle, including generating a minimal risk maneuver request of the vehicle in response to a determination that there is an abnormality in a state of the vehicle, in response to the minimal risk maneuver request being generated, selecting a minimal risk maneuver type from among a plurality of minimal risk maneuver types based on the state of the vehicle, and performing a minimal risk maneuver based on the selected minimal risk maneuver type.

The utility model provides a kind of petroleum chemical impurity filtering equipment, belong to petroleum chemical technical field;Including tank body, the inner wall of tank body is equipped with the filter assembly that the gas impurity in petroleum is filtered;The filter assembly includes feed pipe, the feed pipe is connected in one side of tank body, the top of tank body is connected with exhaust pipe, the inner wall of tank body is slidably provided with several separation plates, the both sides of separation plate are fixedly provided with connecting plate, connecting plate and the inner wall of tank body slide, several separation holes are opened in separation plate, the inner wall of tank body is fixedly provided with baffle in one side of feed pipe, the end of exhaust pipe close to tank body is fixedly provided with demisting block, by the effect of separation plate, demisting block and other structures, using density difference, temperature change, silk screen condensation and other principles, gas, liquid and water in petroleum associated gas are effectively separated, so that the gas discharged finally is pure, improve the purity and quality of resource.

The invention discloses an automatic window opening control system for an automobile falling into water and collision, and relates to the technical field of automobile safety devices. Comprising a stainless steel shell, an insulating face is arranged in the stainless steel shell, a three-in-one control device is designed, the three-in-one control device can sense the external condition that an automobile is impacted by the outside or falls into water, the automobile window is opened by electrifying at the first time, a driver and passengers can escape from an automobile body quickly, secondary damage is avoided, and the safety of the automobile is improved. Meanwhile, the controller can be repeatedly used; according to the control system, the car windows are controlled in a three-coincidence one-by-one mode, when a car accident occurs, only one control system of the three sets of control systems works to open four car windows, and the stuck car windows cannot be opened. In conclusion, the automatic window opening control system for automobile collision and falling into water has wide market prospects and development potential, enterprises need to pay close attention to market dynamics and technical development trends, technical innovation and brand construction are enhanced, and the competitiveness of the enterprises in the market is improved.

The utility model discloses a coal mine ventilation rescue emergency channel, and relates to the technical field of coal mine ventilation rescue channels, the coal mine ventilation rescue emergency channel comprises a rescue pipeline, the inside of the rescue pipeline is fixedly connected with a plurality of crawling ladders, and the coal mine ventilation rescue emergency channel has the beneficial effects that trapped people can conveniently climb to the upper part of the rescue pipeline through the crawling ladders; through mutual cooperation of a winch, a traction rope, an anti-falling safety garment and a guide wheel, rescue of injured people is facilitated, a third rotating shaft is rotated to drive a worm to rotate, so that a second rotating shaft and a worm gear are driven to rotate, and then a protective net plate is driven to rotate; or a fifth rotating shaft and a second bevel gear are rotated to drive a first bevel gear and a fourth rotating shaft to drive a third rotating shaft, a worm, a second rotating shaft and a worm gear to operate, and the protective net plate is put down; therefore, trapped persons outside the rescue pipeline can conveniently enter the rescue pipeline through the escape exits to escape, or trapped persons climbing up from the lower portion can conveniently escape through the escape exits.

The utility model discloses a novel agricultural fertilizer production device, and belongs to the technical field of liquid fertilizer production. The device comprises a tank body, a liquid outlet pipe is arranged at the bottom of the tank body; a valve is arranged on the liquid outlet pipe; a feeding structure for beating solid raw materials is arranged on the top surface of the tank body; the stirring assembly is arranged on the tank body; the degassing assembly comprises an ultrasonic generator, a transducer and a vibration rod; the transducer is arranged on the top surface of the tank body; the transducer penetrates through the tank body and extends into the tank body; one end of the vibrating rod is connected with the transducer; the vibrating rod is positioned in the tank body; and the transducer is in circuit connection with the ultrasonic generator. The liquid fertilizer can be stirred and degassed at the same time, the production process of the liquid fertilizer is effectively simplified, and the production cycle is shortened.