52results about How to "Reduce lift" patented technology

The invention provides a building solid waste recycled aggregate preparation system with multi-layer screening and intelligent judgment functions and an operation method. The construction method comprises the construction steps of waste transportation and throwing, manual sorting, waste crushing, cleaning and impurity removal, fine crushing, multi-stage screening, quality detection and control, finished product storage and transportation and recycled aggregate application. According to the building solid waste recycled aggregate preparation system with the multi-layer screening and intelligent judgment functions and the operation method, accurate regulation and control of the screening process are achieved, and the production efficiency is remarkably improved. The quality stability of the recycled aggregate is ensured, the influence of building wastes on the environment is reduced, and the cyclic utilization of resources is promoted. By adopting the technology, the production scheme can be quickly adjusted according to market requirements, the adaptability is high, and more economic benefits are created for enterprises.

The invention relates to the technical field of batteries, in particular to a single battery and a battery pack. The battery cell provided by the embodiment of the invention comprises a shell, a first electrode terminal, a first electrode assembly and a first tab part, the shell is used for accommodating the first electrode assembly, and the shell is provided with a first wall; the first electrode terminal is arranged on the first wall; the first tab part comprises at least two first tab pieces, the first tab pieces extend out from at least one end of the first electrode assembly, and the first tab part is electrically connected with the first electrode terminal; a first welding mark and a second welding mark are arranged on the first tab part, the orthographic projection of the second welding mark falls into the orthographic projection of the first welding mark along the projection on the large surface of the first tab part, and the second welding mark is used for welding the first electrode terminal and the first tab part; wherein the roughness of the second welding mark is greater than that of the first welding mark. The technical effect of improving the welding strength between the tab and the electrode terminal is achieved.

The invention discloses photovoltaic panel cleaning equipment. The photovoltaic panel cleaning equipment comprises a first rolling assembly, a second rolling assembly and a cleaning assembly; the first rolling assembly is arranged at the first end of the photovoltaic panel, the second rolling assembly is arranged at the second end of the photovoltaic panel, and the first end is higher than the second end; the cleaning assembly comprises a mounting frame, a chain, a first chain wheel, a second chain wheel and a cleaning part; the first rolling assembly and the second rolling assembly are fixed to the two ends of the mounting frame correspondingly. The first chain wheel and the second chain wheel are arranged at two ends of the mounting frame, the chain is meshed with the first chain wheel and the second chain wheel, and the cleaning part is fixed on the chain. The first chain wheel and the second chain wheel can drive the chain to rotate; dust discharging openings are formed in the two opposite ends of the mounting frame, the dust discharging openings extend out of the photovoltaic panel in the first direction, and the rotating track of the cleaning part passes through the dust discharging openings. When the photovoltaic panel is cleaned, the cleaned foreign matters such as dust or accumulated snow can fall off from the dust discharge port, so that the probability that the foreign matters are raised can be reduced, and the cleaning effect on the photovoltaic panel is improved.

The utility model discloses a dust-proof system of a motor sweeper, which belongs to the technical field of motor sweepers, and comprises a dust-proof structure and a driving structure, the dust-proof structure is arranged on one side of a cleaning brush of the motor sweeper deviating from a cab, and comprises a fixed water pipe and a movable water pipe, one side of the fixed water pipe and one side of the movable water pipe are each sequentially provided with a sprinkler head and a water mist nozzle in the length direction of the fixed water pipe and the movable water pipe, the sprinkler heads correspond to the sweeping ends of the sweeping brushes, and the movable water pipe is arranged above the fixed water pipe; the driving structure is connected with the movable water pipe so as to drive the movable water pipe to rotate in a reciprocating mode and drive the water mist spray head to rotate to spray water mist. According to the device, water can be sprayed to the sweeping end of the sweeping brush in the sweeping process of the sweeping brush so as to reduce raised dust in the sweeping process, large-range water mist spraying can be carried out behind the sweeping brush so as to prevent the raised dust from being diffused in the sweeping process, and the dustproof effect of the sweeping vehicle is good.

The utility model belongs to the technical field of detection fixture, specifically is a kind of battery package sealing gasket specification detection fixture, including multiple mainboards, multiple vice plates and fixing device, multiple vice plates are respectively located in the lateral wall of multiple mainboards;Fixing device is arranged on the surface of multiple mainboards and multiple vice plates, and fixing device includes placing plate, and placing plate is located on the surface of mainboard and vice plate, and the surface of placing plate is fixedly connected with two support blocks, the surface of multiple mainboards and multiple vice plates is equipped with four limiting devices, and limiting device includes limiting plate, and limiting plate is sleeved on the surface of mainboard and vice plate, two elastic strips are inserted in the inner surface of limiting plate, two elastic strips are respectively located in the upper and lower ends of vice plate, the surface of elastic strip is fixedly connected with clamping strip, and clamping strip is inserted in the inner surface of limiting plate;By setting the whole device, the position of mainboard and vice plate can be fixed, and the situation that mainboard or vice plate is affected by detection in detection process is reduced.

The invention belongs to the technical field of ion detection, and particularly relates to a method and a system for screening ions in chemical ionization mass spectrometry. The screening method comprises the steps that an ion screening rod is arranged on an ion transmission path of an ion transmission area of the multistage differential chemical ionization mass spectrometer, main radio frequency voltage is applied to the ion screening rod, and full-time broadband control waveforms are coupled; the main radio frequency voltage is used for realizing collision cooling and radial focusing of ions; the full-time broadband control waveform is a broadband excitation waveform of a time domain and a frequency domain, the frequency of the full-time broadband control waveform is the same as the resonant frequency of reagent ions, and the full-time broadband control waveform is used for removing excessive reagent ions. Due to the fact that flying ions are restrained by a radio frequency electric field, the ions with different mass-to-charge ratios have specific resonant frequencies, when a full-time broadband waveform with the same resonant frequency as the reagent ions is externally applied, the reagent ions can be ejected out and annihilated on the ion screening rod, and therefore real-time screening of the reagent ions is achieved.

This invention relates to an automotive signal light and an automotive vehicle; it includes a lamp housing and a light source and an optical lens disposed within the lamp housing; the optical lens is arranged between the light source and the light-transmitting surface of the lamp housing, and the light emitted by the light source is refracted by the optical lens and emitted from the light-transmitting surface in a parallel light form, and the light distribution surface of the optical lens opposite to the transparent surface is an inclined surface C; the inner part of the optical lens is cut and hollowed out to form an air-avoiding layer, the air-avoiding layer includes a first control surface B, a second control surface A opposite to the first control surface B, and a top surface, and the angle between the first control surface B and the top surface is controlled and adjusted based on the inclination of the inclined surface C; thereby, the weight of the optical lens can be effectively reduced, thereby reducing the weight of the entire signal light and effectively raising the optical axis (light beam).

This utility model discloses a waste removal device for a cutting machine, relating to the field of cardboard box production technology. It aims to solve the problem of waste removal devices cleaning cardboard waste and dust together, which easily causes dust to fly around. The key technical points are: it includes a support frame, a first filter frame, a second filter frame, and a guide plate. The support frame is rotatably connected to the first filter frame and is fixedly provided with an abutment block that abuts against the first filter frame. The second filter frame is fixedly mounted on the support frame. The guide plate is fixedly mounted on the side away from the first filter frame and forms a through connection with it. This waste removal device for a cutting machine can separate dust and cardboard waste during waste recycling, allowing dust to be collected separately. This reduces dust emission during waste collection and maintains a clean working environment.

This utility model discloses an ash and slag separation device based on multi-source sludge co-incineration, including a separation and processing box. A feeding hopper is embedded in the bottom of the inner side of the separation and processing box, and an ash discharge hopper is embedded in the top of the inner side of the separation and processing box. A guide frame is embedded in the middle of the inner side of the separation and processing box, and a slag discharge guide trough is fixedly connected to the middle of one side of the guide frame. This utility model ensures that the sliding inner frame can drive the multi-layer screening screen to periodically sway horizontally, so that the furnace ash falls down along the top holes of the multi-layer screening screen into the ash discharge hopper for discharge. The ash and slag intercepted by the multi-layer screening screen is guided to the top of the slag discharge guide trough and discharged to the side of the separation and processing box through the slag discharge guide trough, thereby realizing rapid separation of ash and slag, effectively preventing the ash and slag from containing a large amount of dust that would affect subsequent processing, and thus effectively improving the use effect of the ash and slag separation device.

A high-grade matte blowing rapid mass transfer and heat transfer system comprises a bottom-blown converter, the bottom-blown converter is provided with a hot matte inlet, a flue gas outlet and a bottom-blown air supply nozzle; the hot matte inlet is arranged on the side wall at one end of the bottom-blown converter; the flue gas outlet is arranged on the top of the bottom-blown converter; the bottom-blown air supply nozzles are provided in a plurality and are respectively arranged at the bottom of the bottom-blown converter; a hot matte feed pipe is movably provided on the hot matte inlet; the hot matte feed pipe is inclined, the hot matte inlet is connected to the lower end of the hot matte feed pipe, and the hot matte enters the bottom-blown converter through the hot matte feed pipe; a flue is movably provided on the flue gas outlet; a cold material feed port is provided on the side wall of the flue; a plurality of cold material feed ports are provided; a cold material feed channel is provided on the cold material feed port; the cold material feed channel is inclined; the lower end of the cold material feed channel is connected to the cold material feed port.

The utility model discloses an inonotus obliquus impurity separating device which comprises a base, an outer cover shell is arranged on the top face of the base, openings are formed in the front face and the top end of the outer cover shell, an installation assembly is arranged between the outer cover shell and the base, an air pump is fixed to the top face of the base, and an air conveying pipe is connected to the output end of the air pump. A fixing plate is fixed to the top face of the base, and a purging assembly is arranged at the top end of the outer cover shell. According to the inonotus obliquus raw block cleaning device, airflow blown out through the blowing cleaning assembly makes uniform contact with all positions of the surface of an inonotus obliquus raw block, attached impurities and dust are effectively blown away and removed, blown-out dust and impurity particles are blocked through the arranged outer cover shell, most of the dust and impurity particles are attached to the inner side wall of the outer cover shell, and therefore the dust and impurity particles are effectively removed. The dust raising to the external environment is greatly reduced, air pollution is reduced, when the interior of the outer cover shell is too dirty, the outer cover shell can be conveniently disassembled through the mounting assembly, and therefore the interior of the outer cover shell can be conveniently cleaned.

The invention provides a brewing and deacidification method of aroma-enhanced passion fruit wine, belongs to the technical field of fruit wine, and solves the technical problems of high acidity, poor taste and the like of existing fruit wine. According to the brewing and deacidification method of the aroma-enhanced passion fruit wine, passion fruits harvested in a grading mode are cleaned and then added into a smashing box to be smashed, and fruit pulp is obtained for use; the method comprises the following steps: cleaning glutinous rice, soaking the cleaned glutinous rice in water for 3-5 hours, steaming the cleaned glutinous rice, sprinkling water to cool the steamed glutinous rice, then adding the steamed glutinous rice into an enzymatic hydrolysate, adding a composite yeast agent into the enzymatic hydrolysate, and uniformly stirring to obtain a fermentation substrate; adding the fermentation substrate, distiller's yeast and fruit pulp into a fermentation tank, adding an acid reducing agent, and carrying out sealed fermentation; after the fermentation is completed, precipitating and filtering the passion fruit wine, then feeding the passion fruit wine into a storage tank for storage, sealing the precipitate after precipitation, and then filtering the passion fruit wine. The method has the advantages that the acidity of the passion fruit wine is reduced, the flavor of the passion fruit wine is improved, the filtering pressure is reduced, and the quality is improved.

The utility model discloses a heating device for an aircraft wing, and particularly relates to the field of aircraft heaters, which comprises an aircraft wing, a connecting piece fixedly connected to the bottom of the aircraft wing, an engine fixedly connected to the bottom of the connecting piece, a heating ring fixedly mounted on one side of the engine, and a connecting pipe fixedly connected to the outer wall of the heating ring. One end of the connecting pipe is fixedly connected with a water inlet of a circulating water pump, a water outlet of the circulating water pump is fixedly connected with a heating pipe, a protective sleeve is fixedly installed on the outer wall of the circulating water pump and fixedly installed on one side of the connecting piece, and the connecting pipe and the heating pipe are inserted into the protective sleeve. The heating ring and the heating pipe are arranged, waste hot air of an engine can heat liquid through the heating ring, the high-temperature liquid is driven by the circulating water pump to heat the front edge of the aircraft wing through the heating pipe, the front edge of the aircraft wing is prevented from freezing, and the effect of heating the aircraft wing to prevent freezing is achieved.

This utility model discloses a grain lifting device, including a lifting machine casing. Two drive wheels are rotatably connected to the upper and lower ends of the inner surface of the lifting machine casing, respectively. The surfaces of the two drive wheels are connected by a first drive belt, and a grain transport box is fixedly connected to the first drive belt. A fan is installed on one side of the upper part of the feeding hopper of the lifting machine casing, and a dust collection box is installed on the other side of the upper part of the feeding hopper. The dust inlet of the dust collection box is directly opposite the fan. The outlet of the discharge hopper of the lifting machine casing faces downwards, and a sieve plate is installed at the outlet of the discharge hopper. This utility model sets up a fan and a dust collection box at the feeding hopper. When grain enters the feeding hopper, the fan can separate impurities from the grain, which will be stored in the dust collection box for easy cleaning. The grain enters the grain transport box and is conveyed to the discharge hopper, where the sieve plate further separates large impurities, achieving secondary impurity removal from the grain. This reduces dust from the grain during discharge, thus protecting the environment.

The utility model discloses an auxiliary part for injection molding and feeding, relates to the technical field of auxiliary parts, and aims to solve the problem that the processes of taking materials from a material bag and feeding the materials are inconvenient in the existing injection molding process. According to the key points of the technical scheme, the device comprises a groove body which is embedded into the ground and provided with an opening in the top, a groove opening of the groove body is flush with the ground, and the groove body is fixedly connected with a material overturning part used for overturning bagged materials to be fed into the groove body; a cutting knife which is located on an overturning path of the overturning part, can penetrate into the material overturning part and cuts a material bag of the bagged materials is fixedly connected into the groove body. Through the arrangement of the structure, the process of taking materials from the material bag and feeding the materials in the injection molding process is simplified.

The utility model relates to the technical field of plastic particle processing equipment, in particular to dustproof plastic powder mixing equipment which comprises a mixing barrel, concave blocks are fixedly connected to the two sides of the inner wall of the mixing barrel respectively, rotating shaft rods are rotationally connected into the concave blocks, connectors are fixedly connected to the outer walls of the rotating shaft rods, the other ends of the connectors extend outwards and are fixedly connected with baffles, mounting rings are fixedly connected into the concave blocks, and torsion springs are arranged on the inner walls of the mounting rings. According to the plastic powder mixing device, bagged plastic powder is poured into the mixing barrel from the notches formed in the aligned positions of the two baffles, the plastic powder in the mixing barrel is shielded through the two baffles, raising of the powder is reduced, and the mixing barrel is convenient to use. And meanwhile, a torsion spring can automatically spring back the baffle which rotates on the shape plate, so that the baffle is prevented from being damaged when the bag is put into the baffle.

The utility model relates to a color powder additive feeding device for an asphalt mixing tank, and belongs to the technical field of asphalt mixing equipment. The device comprises a stirring cylinder, wherein a feeding hopper is additionally arranged on the feeding side of the stirring cylinder; the feeding hopper structurally comprises a feeding section and a buffering section which are sequentially arranged in the feeding direction, the feeding section is of a vertical straight tube pipeline structure, and the buffering section is of a pipeline structure which is communicated with the feeding section and is obliquely arranged; a movable cover plate is installed on a feeding port of the feeding section, the top of the movable cover plate is connected with a cover plate air cylinder, and cover plate walking wheels are installed at the bottom of the movable cover plate. A turning plate is arranged at the joint of the feeding section and the buffering section and connected with a turning assembly. According to the utility model, a buffer area can be formed, operators are prevented from being harmed by high-temperature flue gas, and materials are buffered in the process of falling into the stirring cylinder, so that the stirring cylinder cannot be damaged.

The conveying device with the vacuum adsorption function comprises a machine frame, a conveying belt is arranged on the inner side wall of the machine frame, adsorption holes are formed in the surface of the conveying belt, one side of the machine frame is fixedly connected with a first containing plate, a vacuum pump is placed on the surface of the first containing plate, and the first containing plate is fixedly connected with a second containing plate. And a vacuum pipe is fixedly installed at the end of the vacuum pump, a second containing plate is fixedly connected to the other side of the rack, and a spraying assembly is placed on the surface of the second containing plate and comprises a liquid storage box. By arranging the rolling brush, dust and residues on the surface of the conveying belt can be quickly cleaned under the driving of the motor, dust, stains and other residues on bristles can be adhered to the rolling brush when the rolling brush brushes the cleaning cloth, the rolling brush is kept clean, and the rolling brush can be flexibly stored after being used. And the spraying assembly is matched for spraying water, so that a better cleaning effect can be achieved, and meanwhile raised dust in the cleaning process can be reduced.

The utility model discloses a paperboard paper cutting machine with feeding structure belongs to paper cutting machine technical field, including the bottom plate, the top of bottom plate is fixedly connected with mounting bracket and work plate respectively, the top fixedly connected with electric push rod of mounting bracket, and the movable end of electric push rod extends to the inside of mounting bracket, and fixedly connected with the lifting plate, and the bottom of lifting plate is fixedly connected with cutter and slide cylinder respectively, and the inside slide coupling of slide cylinder has slide rod, and the bottom end of slide rod extends to the outside of slide cylinder, and fixedly connected with the pressing plate, and the side surface of slide cylinder and slide rod is commonly equipped with spring, and the top of spring is fixedly connected in the bottom of lifting plate, through above -mentioned each device between the cooperation use, makes the lifting plate drive pressing plate and cutter and moves down, and spring can apply the thrust to pressing plate, makes it close -fit on paperboard, thereby has strengthened the stability of paperboard, has reduced the possibility that paperboard rises, and further helps the cutting quality of paperboard to improve.

This utility model relates to the field of pharmaceutical labeling technology and discloses a novel high-adhesion, wrinkle-resistant pharmaceutical label, comprising a label body, a rubber-based adhesive surrounding the bottom perimeter of the label body, multiple micro-indentations on the bottom of the label body, and multiple microcapsules disposed on the bottom of the label body. The label body is divided into a surface layer, a middle layer, an elastic buffer layer, and an adhesive layer from top to bottom. The surface layer is made of biaxially oriented polypropylene film, the middle layer is made of thin polyester film, and the rubber-based adhesive is a mixture of natural rubber, terpene resin, and phthalates. In this utility model, the label body achieves high adhesion through the synergistic effect of multiple structures. The adhesive layer, as the main bonding structure, provides initial adhesion, ensuring the label can be initially and firmly bonded; the microcapsules filled with modified polyvinyl alcohol release the modified polyvinyl alcohol upon rupture under pressure, further enhancing the overall adhesion.

The efficient cleaning device comprises a dust suction box and a water storage box, the right end of the dust suction box is connected with a dust suction controller through a dust suction pipe, a blocking cover is connected to the dust suction controller in a screwed mode, a circular groove is formed in the front end face of the blocking cover, a plurality of inserting rods are arranged in the circular groove and penetrate through the blocking cover, and the inserting rods are connected with the water storage box through a water inlet pipe. The front end of the insertion rod is sleeved with a spring, the spring is located in the circular groove, the end of the insertion rod is connected with a movable check block, and by designing the movable check block which can contract under external force, when the device cleans a certain position of a machine, the movable check block relatively seals an area to be cleaned through downward pressing, dust raising is reduced, and the cleaning efficiency is improved. And by designing a detachable dust collecting pipe, a dust filtering pipe and a cleaning brush, dust and sweeps in the device are easy to clean.

The invention discloses a laser transmitter positioning detection device, and belongs to the technical field of laser transmitter positioning detection, the laser transmitter positioning detection device comprises a box body and a clamping mechanism arranged in the box body, the clamping mechanism comprises a working assembly and a clamping assembly, the working assembly comprises a motor, the inner wall of the box body is fixedly connected with the motor, and the clamping assembly is fixedly connected with the motor. One end of the motor is fixedly connected with a supporting seat, one end of the motor is fixedly connected with a threaded column, the clamping assembly comprises a pushing strip, the outer wall of the threaded column is spirally connected with the pushing strip, the top of the pushing strip is fixedly connected with a clamping plate, and the motor fixed to the outer wall of the supporting seat runs to enable the motor to drive the threaded column to rotate; when the detector is clamped and fixed, the pushing strip in spiral connection moves, the synchronous pushing strip can move in a sliding groove formed in the supporting base, stability during fixing is guaranteed, the pushing strip moves in the direction, the effect that the pushing strip drives the clamping plate to conduct clamping and fixing is achieved, the detector is positioned, shaking is prevented, and the detector can be rapidly detached and taken.

The utility model provides a small-size assembly type automobile air conditioner control switch, and relates to the field of control switch structures, the small-size assembly type automobile air conditioner control switch comprises a base, the base is provided with a mounting hole, and the base is provided with a sliding block slidably arranged in the mounting hole; the button is clamped and mounted at the top end of the sliding block; the decorating part is clamped and mounted at the top end of the sliding block and surrounds two adjacent side edges of the button, the decorating part comprises a forward area and a side area, the width of the forward area is larger than that of the side area, and the forward area is clamped and mounted at the top end of the sliding block; and the edge locking structure is arranged between the button and the decorating part and is used for locking and fixing the edge side area. According to the decorative part, the rod portion of the hook on the side area is embedded into the hanging groove in the button, the hook portion of the hook abuts against the inner wall side of the sliding block, then after the button is installed in place, the pressing teeth further press the hook, the hook can be firmly fixed between the button and the sliding block, and therefore the stability and firmness after the decorative part is assembled can be remarkably improved.

The utility model relates to an on-line shaping device for a steel bar. The on-line shaping device comprises a material moving mechanism, a material supporting mechanism, two positioning mechanisms and a material pressing mechanism, the material moving mechanism comprises a plurality of discharging rods, a material moving assembly and a first air cylinder. The material supporting mechanism comprises a plurality of material supporting rods, and a plurality of material supporting grooves are formed in the tops of the material supporting rods. The positioning mechanism comprises a connecting plate, two pressing rollers and a second air cylinder. The material pressing mechanism comprises a rack, a position adjusting assembly, a material pressing driving piece and a material pressing plate. Compared with the prior art, the on-line material conveying and correcting device has the advantages that due to the alternate action of the material supporting rod and the material discharging rod, on-line material conveying and correcting are achieved, the supporting and positioning effect on special-shaped steel bars is enhanced, and due to the fact that the positioning mechanism positions the steel bars, displacement and upwarp of the steel bars during material pressing and correcting are reduced.

The application relates to the technical field of sleeve processing, in particular to a sleeve folding machine. The sleeve folding machine comprises a processing table, a material folding assembly and a lifting assembly. The material folding assembly is provided with a material folding surface. The material folding surface, the processing table and the lifting assembly are sequentially arranged along the height direction of the sleeve folding machine. The lifting assembly comprises a lifting base and a lifting driving element. The lifting base is connected to the material folding assembly. The lifting driving element is installed on one of the lifting base and the processing table. The output end of the lifting driving element is connected to the other one of the lifting base and the processing table. The output end of the lifting driving element can apply force to the processing table or the lifting base, so that the material folding surface can be lifted or lowered relative to the processing table. The sleeve folding machine provided by the application solves the problem of low efficiency of the existing sleeve folding machine when folding sleeves.

The invention discloses a welding process for an offshore wind power platform supporting plate, and relates to the technical field of welding, the welding process comprises the working procedures of preparation before welding, positioned welding, liner removal and automatic trolley welding, a K-shaped groove is formed in the supporting plate, the angle of the groove is 45 degrees, the size of a truncated edge is 0-2mm, a welding gap is reserved during assembling, a ceramic round rod liner is placed at the root of the groove, and the welding process is completed. And the groove and the blunt edge are subjected to flame heating, flux-cored arc welding is adopted for welding the small groove side, after a welding seam is cooled, the ceramic round bar gasket is removed, and an automatic welding trolley body and flux-cored wire arc welding are adopted for welding the large groove side. According to the welding method, the ceramic round rod gasket is adopted and makes close contact with a weldment in the welding process, it is guaranteed that a root weld joint is well formed, the flux-cored wire arc welding and automatic welding trolley technology is adopted for the large groove side, and the welding efficiency is improved.

The utility model belongs to the technical field of forklifts, and particularly relates to a forklift balancing weight mounting assembly which comprises a balancing weight cavity. The middle of the balance weight cavity is slidably connected with a plurality of sets of first balance weight blocks. The middle parts of the plurality of groups of first balancing weights are connected with second balancing weights in a sliding manner; the end part of the first balancing weight is connected with a top cover plate in a sliding manner; the middle part of the top cover plate is rotationally connected with a bolt; the middle part of the bolt is rotationally connected with a connecting block; a shot block is slidably connected to the middle of the connecting block; the middle part of the shot block is fixedly connected with a steel cable; according to the step, when the number of the first balancing weight and the number of the second balancing weight need to be increased or decreased, the installed first balancing weight can be pulled upwards through the pulling effect of the motor on the first balancing weight, then the first balancing weight can be added to the lower portion of the interior of the balancing weight cavity, and therefore the first balancing weight and the second balancing weight can be conveniently added; and therefore, the situation that the first balancing weight needs to be excessively lifted when being added can be reduced, and the working efficiency can be improved.

This application discloses a wing lift-to-drag ratio adjustment device and method, belonging to the field of aircraft aerodynamics design. At least two airflow passing elements are symmetrically arranged on the lower surfaces of the left and right wings of the aircraft, and can switch between a retracted state and an operational state. In the operational state, the airflow passing elements at least partially protrude from the lower wing surface, with at least the surface facing the leading edge being arc-shaped, and their cross-sectional area decreasing along the protrusion direction. This accelerates the local airflow, reduces static pressure, thereby reducing lift, while simultaneously generating form drag to increase overall aircraft drag. A drive mechanism is used to switch the state of the airflow passing elements in response to control commands; a controller is used to generate and send control commands. This application also provides a corresponding adjustment method. This application has a simple structure, low cost, and can flexibly adjust the lift-to-drag ratio according to the landing environment, with minimal impact on the aircraft's pitch moment, making it particularly suitable for long-endurance aircraft without flaps.

The utility model relates to the field of paper cup machines, and discloses a cup bottom hot air device of a paper cup machine, which comprises a heating cover and a hot air generating device, a cavity allowing the bottom of a cup to enter is arranged in the heating cover, a hot air head is arranged at the bottom of the cavity, and the bottom of the hot air head is fixedly connected with a hot air guide pipe. The outlet end of the air outlet pipe communicates with the hot air guide pipe, and the hot air guide pipe can ascend and descend relative to the hot air production device and is used for adjusting the size of an air path communicating between the air production pipe and the hot air guide pipe. The hot air head is installed at the top of the hot air guide pipe, and the hot air guide pipe is driven to move while the hot air head is driven to ascend and descend. The lifting motion of the hot air guide pipe can directly determine the size of an air path communicated between the air outlet pipe and the hot air guide pipe, so that the heating of the heating cover and the operation of the heating cover can be synchronously carried out, the coordination of equipment operation can be improved, and an additional control device is not needed to control the air volume.

The present application relates to the field of medical devices, and specifically discloses a transfer nursing chair, including a base frame, a seat plate detachably connected to the base frame through an installation component, and the installation component includes a support rod, a connecting block, a linkage block, a limit block, a fixed block, and a positioning block; the support rod is arranged on the base frame, and a support groove is arranged on the seat plate, and the support rod is inserted into the support groove; a sliding groove is arranged on the groove wall of the supporting groove, and the connecting block is slidingly arranged on the groove wall of the sliding groove, and an elastic member is connected between the connecting block and the groove wall of the sliding groove; the linkage block is arranged at one end of the connecting block, and a guiding inclined surface is arranged on the linkage block; a limited card slot is arranged on the support rod, and the limit block is slidingly arranged on the groove wall of the limited card slot; one end of the linkage block extends into the limited card slot, and the limit block and the groove wall of the limited card slot are both in contact with the linkage block. The present application can improve the convenience of the patient transfer process and reduce secondary damage to the patient.