198results about How to "Improve workability" patented technology

The invention provides a dual-rotor water-air amphibious unmanned aerial vehicle with a plume-like electric eel structure, which comprises a main body assembly, and the main body assembly comprises a triangular bracket, a fuselage main body, an electric eel driving mechanism, a rotary connecting piece, a U-shaped clamping groove, the plume-like electric eel structure and a load platform. According to the unmanned aerial vehicle, the line-like electric eel structures are arranged on the two sides of the fuselage main body, so that the unmanned aerial vehicle can enter and exit water without an underwater propeller or mode switching, and the structures are low in movement energy consumption, so that the unmanned aerial vehicle has the capability of working for a long time and can be flexibly switched between an air mode and a water mode; meanwhile, the system has excellent performances such as ultra-silence, high endurance and high efficiency; according to the invention, the attitude control is realized through a double-rotor structure consisting of the waterproof brushless motor, the output shaft and the folding propeller assembly and through the tilting mechanisms which are mounted front and back, the tilting mechanisms enable the rotors to deflect, different attitudes and motions can be realized through different tilting directions and tilting speeds, and the attitude stability and the motion control are enhanced.

The invention discloses a hydraulic active suspension system with a multi-mode switching function and a control method of the hydraulic active suspension system. The hydraulic active suspension system comprises a sensing module, a control module and a hydraulic suspension module. The sensing module is used for sensing road condition information and a vehicle state; the control module is used for working condition identification, working mode selection and hydraulic suspension module control; the hydraulic suspension module comprises a left front single-wheel suspension system, a left rear single-wheel suspension system, a right front single-wheel suspension system and a right rear single-wheel suspension system, the hydraulic suspension module achieves rapid switching of all the single-wheel suspension systems among a semi-active mode, a slow mode, a rapid mode, a pressurizing mode and a power generation mode through a mode switching valve, and mode switching of all the single-wheel suspension systems can be independently controlled. And the hydraulic suspension module has more flexible and diversified mode combinations. According to the technical scheme, the mode switching of the active suspension is controlled, the problem that an existing active suspension is single in mode and difficult to adapt to complex and changeable road conditions is solved, and the comprehensive performance of an active suspension system is improved.

The invention discloses an environment-friendly construction dust suppression device and method, and relates to the technical field of environment-friendly construction. According to the environment-friendly construction dust suppression device, through the design of a composite mechanism, a suction fan is inserted into the outer side of an external connection disc, so that disassembly and assembly are facilitated, follow-up replacement and maintenance are facilitated, the suction fan is started, wind enters from the side, close to a flowing pipe, of the inner wall of a composite shell and flows towards the side of the suction fan, and therefore dust and smell on a site are absorbed; the situation that the site environment is too severe, personnel safety is affected, potential safety hazards are reduced, the flowing pipe is of a structure with the two wide ends and the middle narrow and small, according to the Bernoulli principle, the diameter of the pipeline is reduced, the flowing speed of gas is increased, and therefore the operation effect is improved, and the cleaning efficiency of the construction site is improved; dust and air flow enter the composite shell, harmful gas of the air flow is filtered and purified through the filtering mechanism, and therefore normal operation of equipment is kept.

The invention discloses a distributed online adaptive task planning system for an unmanned aerial vehicle group, and relates to the technical field of unmanned aerial vehicle task planning. The system comprises a data acquisition and processing module, a task planning and distribution module, a path planning module, a load configuration module, a real-time monitoring and adjusting module, a cooperative control module, a real-time communication module and an optimization module, and generating a task planning scheme and performing task allocation by applying an online optimization algorithm and a self-adaptive technology. According to the invention, the task planning and distribution module integrates advanced algorithms and technologies to perform task planning and task distribution, so that each unmanned aerial vehicle can bear appropriate task load, an unmanned aerial vehicle / vehicle cluster can autonomously and efficiently complete diversified tasks in a complex environment, intelligent scheduling, path optimization and cooperative operation of the unmanned aerial vehicles / vehicles are realized, and the unmanned aerial vehicle / vehicle cluster is enabled to be more intelligent. And the self-organization capability, the dynamic adaptability and the collaborative operation efficiency of the unmanned aerial vehicle group are improved.

The utility model provides a self-propelled sunflower harvester, which belongs to the technical field of agricultural machinery and structurally comprises a self-propelled vehicle machine and a frame, a header is arranged at the front end of the frame, and a primary conveyor and a secondary conveyor are communicated with the rear of the header. The rear part of the secondary conveyor is communicated with a thresher; a screening mechanism is arranged below the thresher, and the screening mechanism is composed of a first-stage vibrating screen which is composed of a swinging fish scale screen and rushes backwards, and a second-stage vibrating screen which is composed of a swinging stepped dense mesh screen and rushes forwards; the screening mechanism communicates with the conveying and lifting mechanism. The conveying and lifting mechanism comprises a transverse auger and a bucket elevator. And the conveying and lifting mechanism is connected with the grain collecting hopper. The sunflower seed and sunflower disc separating device can achieve good separation of sunflower seeds and sunflower discs, the sunflower seeds and the sunflower discs are respectively conveyed in two paths during threshing, and simple and efficient threshing separation can be achieved. The threshing process is automatically completed, manpower and material resources are saved, and good harvesting and harvesting effects are achieved.

This invention discloses a landing buffer device for unmanned aerial vehicles (UAVs), relating to the field of aviation equipment technology. By integrating the roller body and the sliding plate as two grounding structures onto the landing gear, the device can quickly switch operating modes according to ground conditions through the linkage of the piston cylinder and piston rod. On flat ground, the roller is used first to reduce gliding resistance, while on muddy or slippery ground, the sliding plate is used for grounding, effectively preventing roller jamming and enhancing all-terrain adaptability and landing safety. Simultaneously, the mechanical buffer composed of a second and third spring, combined with the hydraulic damping buffer composed of buffer components, forms a highly efficient double-layer energy-absorbing buffer structure, which to a certain extent alleviates the damage to the aircraft and equipment caused by landing impact, thus improving the landing safety of the UAV.

The invention belongs to the technical field of robot teleoperation and haptic interaction, and provides a multi-mode force feedback control method and system for nuclear facility robot operation, and the method comprises the steps: collecting the state information of a master arm and a slave arm in real time, and dynamically scheduling a haptic calculation strategy according to a task state; a fast estimation strategy is enabled in the fast transit mode. Further, real environment interaction force is obtained based on dynamic model compensation and net interaction force extraction; combining the dynamically selected multi-mode force feedback parameters, and synthesizing and outputting a touch instruction to the main arm. Meanwhile, admittance correction and feed-forward compensation are carried out on a slave arm motion instruction through net interaction force and dynamic internal force, synchronous output is carried out after safety optimization, and the slave arm is controlled to move. The problems of poor task adaptability, force sense distortion and insufficient safety in nuclear facility teleoperation are solved, and intelligent, high-fidelity and safe robot teleoperation is achieved.

Provided is a chocolate-like food which has excellent workability in a normal temperature range and does not bleed out. According to the present invention, it is found that a chocolate-like food product which has excellent workability in a normal temperature range and does not bleed out can be provided by satisfying all of the following conditions (a) to (e): (a) the total amount of saturated fatty acids having 12 and 14 carbon atoms in the constituent fatty acids in the oil content is 20-48% by mass, and (b) the total amount of saturated fatty acids having 12 and 14 carbon atoms in the constituent fatty acids in the oil content is 20-48% by mass; (b) the total amount of unsaturated fatty acids having 18 carbon atoms in the constituent fatty acids in the oil content is 37-59% by mass, (c) the moisture content is less than 3% by mass, (d) the oil content is 35-70% by mass, and (e) 0.5-2% by mass of a glycerin fatty acid ester containing 40% by mass or more of behenic acid. Also provided are: a food or drink in which the chocolate-like food is combined; and a method for improving the storage suitability and work suitability of the chocolate-like food.

This invention discloses a capture device for unmanned underwater vehicles (UUVs), comprising a submersible fixed by a mounting frame. The mounting frame is symmetrically mounted with a grasping mechanism for capturing the UUV via a base. The grasping mechanism includes a drive arm driven by the base, with the other end of the drive arm rotatably connected to four corner support frames. The four corner support frames are driven by connecting arms to contact claws for gripping. A groove is provided on the side of the drive arm near the base, and a servo motor is mounted on the base. The servo motor is connected to a gear at one end of a limiting link, transmitting power through the other end of the limiting link to the groove on the drive arm to achieve the movement of the grasping mechanism. This invention also discloses a method for launching and recovering UUVs in conjunction with the above-mentioned launch and recovery device. This invention simplifies precise hook docking operations in high sea states, reduces the dependence of UUVs on computing power during launch and recovery, and improves the automation level of the launch and recovery process.

The present application provides an optical unit for housing a sample when measuring the concentration of the sample by absorbance photometry, and can improve workability and measurement accuracy compared with the past. An optical unit (2) is an optical unit for housing a sample used in a concentration measuring device that measures the concentration of a sample by absorbance photometry, and the optical unit (2) includes a housing portion (21) having a long side direction and a short side direction in a horizontal cross section, and a protruding portion (24) extending outward along the short side direction from a side surface of the housing portion (21) along the long side direction.

The application belongs to the technical field of steel drum processing device, and discloses a high-strength steel drum forming processing device, which comprises an equipment rack, a forming assembly unit is arranged in the equipment rack, the forming assembly unit comprises a barrel-shaped mold inner core fixedly connected in the equipment rack, a hydraulic push rod one is fixedly connected to the lower inner wall of the equipment rack, an arc bottom push plate is mounted at the output end of the hydraulic push rod one, and a hydraulic push rod two is fixedly connected to the left and right inner walls of the equipment rack in a symmetrical mode, the electric guide rail drives the edge seam welding arm and the welding head to move stably, the longitudinal edge seam after the steel sheet is formed can be accurately aligned and welded, the waste gas treatment unit and the welding operation are synchronously operated, the pump machine stably generates a negative pressure suction force, the negative pressure suction force is efficiently transmitted to each dust suction head through a flexible hose, the multiple ring-shaped equidistantly distributed dust suction heads can quickly and comprehensively adsorb the waste gas and dust generated in the welding process, and the waste gas and dust are prevented from diffusing to the operation area.

A high-strength hot-rolled steel sheet according to the present invention has a specific chemical composition and a steel microstructure including, as main phases, 80% to 100% of martensite and bainite in terms of total area fraction. An entire area fraction of the martensite in the bainite is 2% to 20%. Among the martensite in the bainite, an area fraction of martensite each having an orientation difference of 15° or more between a crystal orientation of the martensite and a crystal orientation of at least one of bainite adjacent to the martensite is more than 50% relative to the whole martensite. When regions surrounded by boundaries between adjacent crystals having an orientation difference of 15° or more are defined as crystal grains, an average aspect ratio of the crystal grains present in a region extending from a surface of the steel sheet to a depth of 5 um is 2.0 or less.

The utility model belongs to the field of mining drilling machines, and relates to a full-section drilling machine with a drilling rod conveying system, which comprises a moving platform, a drilling rod box, an auxiliary manipulator, a posture adjusting device, a drilling rod transporter, a main manipulator and a rack, and the posture adjusting device comprises a revolving platform, a lifting sleeve, a transporter gyrator and a dip angle gyrator. The rotating platform serves as a carrier of the posture adjusting device and is rotationally connected to the movable platform, the lifting sleeve is vertically installed on the rotating platform in a lifting mode, the transporter gyrator and the dip angle gyrator are both installed on the lifting sleeve, and the transporter gyrator and the dip angle gyrator are installed on the lifting sleeve. The dip angle gyrator and the transporter gyrator are both located on the side, away from the drill rod box, of the lifting sleeve. The drill rod transporter is arranged at the top of the transporter gyrator, and the dip angle of the drill rod transporter is adjusted through the transporter gyrator; the machine frame is arranged on the side, away from the lifting sleeve, of the dip angle gyrator in a side hanging mode, and the main mechanical arm is installed on the machine frame and rotates along with the machine frame.

This application relates to the field of road engineering materials technology, and discloses a method for preparing modified phosphogypsum base material for road engineering, comprising the following steps: mixing aged phosphogypsum with ferrous sulfate heptahydrate, sodium fluorosilicate, and manganese sulfate monohydrate, utilizing the inherent moisture of the phosphogypsum to dissolve the salts and form an acidic slurry; adding heat-curing dry powder and high-speed shearing, utilizing the heat of hydration to raise the temperature to 65℃-85℃ to create a high-temperature strong alkaline environment, initiating manganese catalytic oxidation and slag thermal etching; subsequently, high-pressure injection of a rapid cooling conditioning liquid, utilizing the latent heat of vaporization to rapidly cool to below 45℃ to complete rapid cooling quenching and slow setting locking; unloading and aging to obtain the modified phosphogypsum base material. This invention, through the release of chemical energy by quicklime hydration to construct a high-temperature strong alkaline reaction field, achieves deep mineralization of impurities and reconstruction of the cementitious material network, significantly improving the water stability and mechanical properties of the base material.

A harvester has a storage portion (6) which is supported to a body frame (12) in a state changeable between a closed state (A1) in which the storage portion is located on the body frame (12) and can store a harvested crop and an open state in which the storage portion is extended outward in a lateral direction from the body frame (12). The harvester has a support portion (37) provided to a lower portion (6a, 6b) of the storage portion (6), a guide portion (36) which supports the storage portion (6) by placing the support portion (37) and can guide the support portion (37) from the closed state (A1) to the open state side, and a lifting mechanism (45) which can perform a lifting operation of the support portion (37) from the guide portion (36).

The utility model relates to a ground rail line adaptive to a mold automatic robot, which comprises a ground rail, and an adjusting component is mounted below the ground rail; the adjusting assembly comprises an adjusting disc, a sleeve is fixedly connected into the adjusting disc, a rotating cylinder is installed in the sleeve, the lower end of the rotating cylinder is in butt joint with a first gear, a first motor is installed in the adjusting disc, the first motor is in butt joint with a first lead screw, the first lead screw is meshed with the first gear, and the upper end of the rotating cylinder is in butt joint with a rotating piece. A second motor is installed in the adjusting disc, a second lead screw is in butt joint with the second motor, the second lead screw is meshed with the second gear, a driving bevel gear and a driven bevel gear are in butt joint with the upper end of the second gear, and a transmission shaft penetrates through the middle of the driven bevel gear. A hydraulic rod is fixed to the transmission shaft, and a connecting plate is in butt joint with the top end of the hydraulic rod and fixedly connected with the ground rail. The adjusting assembly can adjust the height and the inclination angle of the ground rail.

Unintentional damage of a power supply device during assembling of the device is avoided to increase workability of the assembling. The power supply device includes secondary battery cells (1) each including an electrode terminal, a battery holder (10) holding the cells (1), and a circuit board including a control circuit mounted thereon and electrically connected to the cells (1) to control charging and discharging. A method of manufacturing the device includes connecting, to a board-side ground terminal disposed on the board, a battery-side ground terminal (30) drawn outside from the holder (10) as a ground of a total output of the cells (1) electrically connected in series and / or parallel, mounting the board on a surface of the holder (10), and connecting, to respective one or more board-side intermediate terminals disposed on the board, one or more battery-side intermediate terminals (21) disposed on the holder (10) being electrically connected to at least one of the cells (1).

The invention relates to the technical field of interphones, and discloses a high-strength anti-falling interphone, which comprises an interphone, the storage cavity is arranged on the interphone; the antenna part is arranged on the accommodating cavity, an antenna connecting seat is arranged in the accommodating cavity, and the antenna part is inserted into the antenna connecting seat; according to the application, the antenna part can be conveniently extended when the interphone is used, stable transmission of signals is ensured, the antenna part can be automatically retracted when the interphone falls or is impacted by external force, the antenna is prevented from being damaged, and the anti-falling capability and durability of the interphone are improved. Due to the telescopic and self-protection design, the antenna improves the functionality of the interphone, and meanwhile, the safety and long-term reliability of equipment are taken into account. Compared with the traditional antenna design, the design effectively solves the problem that the antenna is easy to damage, and ensures that the interphone can still keep good working performance under the conditions of daily use, extreme drop and the like especially in a high-strength use environment.

This invention relates to the field of concrete admixtures, specifically to an anti-mud polycarboxylate superplasticizer, its preparation method, and its application. The anti-mud polycarboxylate superplasticizer provided by this invention comprises, by weight, the following raw materials: 100-180 parts of unsaturated polyether monomer, 5-10 parts of unsaturated carboxylic acid monomer, 2-5 parts of air-entraining monomer, 5-10 parts of anti-mud monomer, 10-20 parts of oxidant, 0.4-0.6 parts of reducing agent, 5-7 parts of chain transfer agent, and 150-300 parts of water; the air-entraining monomer and the anti-mud monomer have specific structures. The simultaneous introduction of specific anti-mud monomers and air-entraining monomers into the anti-mud polycarboxylate superplasticizer of this invention not only reduces clay adsorption but also provides better dispersibility and anti-mud effect at lower dosages, increasing the overall workability of concrete and improving concrete performance.

This invention discloses a wind-resistant reinforced intelligent utility pole, which relates to the field of power construction technology. A connecting base is positioned on the upper side of the utility pole and remains fixed thereto. The lighting fixture is fixedly connected to an external support rod, which in turn is fixedly connected to a mounting frame. The mounting frame is inserted from the top of the utility pole, allowing it to mate snugly with the connecting base. A threaded connection exists between the mounting frame and the connecting base, improving installation efficiency and supporting the lighting mechanism. A rotating device is positioned on an annular groove. When the utility pole encounters strong winds, the wind force acts on the rotating device, causing it to rotate and reducing the frontal wind force and wind load. Furthermore, when the utility pole is installed on the adjustment device, the pole aligns the external plate with the U-shaped plate. The external plate and the U-shaped plate are then plugged in and threaded together, enhancing the fixation effect between components.

The utility model discloses an agricultural machinery soil turning device, including buffer connecting device, through buffer connecting device connection traction machinery, frame, the frame passes buffer connecting device fixed mounting, the frame has the mouth of installation, the frame is fixedly installed with the support board in the one end away from the mouth of installation, through support board with the frame is equipped with the wheel, the pivot, the pivot rotatory mounting is in the mouth of installation, the pivot is fixed with the rotating roller, a plurality of soil turning hooks are installed to the outer wall department of rotating roller, when the wheel is used to the land surface, and the soil turning hook is driven into the soil after the rotating roller, drive arrangement, drive arrangement passes through support board device, and drive arrangement is equipped with transmission unit between cooperation with the pivot, and this device can buffer when having greater impact force.

A pack case includes a base plate, a side plate coupled along a perimeter of the base plate to define an accommodation space therein; a lower cross beam coupled to the base plate to transversely divide the accommodation space; and an upper cross beam coupled to the lower cross beam.

This invention belongs to the technical field of power equipment operation and maintenance, power distribution line construction, and high-altitude operation machinery. A pole-mounted transformer replacement device based on a truck-mounted crane is characterized by comprising a main frame and support system, a translational load-bearing system, a chain drive system, and a vertical lifting and centering system. The main frame and support system includes a main load-bearing frame, stabilizing legs, and lifting lugs. The translational load-bearing system includes a translational load-bearing platform and a linear guide rail slider assembly. The chain drive system mainly consists of a geared motor, a drive gear, a driven gear, a short transmission chain, a drive sprocket shaft, a bearing support seat, a long transmission chain, and a reducer mounting support. The vertical lifting and centering system includes a centering mechanism, a vertical lifting mechanism, and a vertical lifting support plate. The centering mechanism includes a horizontal drive motor, a horizontal push rod mechanism, and a guide bracket. This device can be transported by truck, deployed quickly, and is suitable for operation in confined and electrified environments.

The utility model relates to a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stubble cleaning and crushing monomer belongs to agricultural machinery, and the utility model discloses a height and angle adjustable three-dimensional horizontal stub

A device for attaching a motor protector includes: an accommodating member; and a fixation member to which the accommodating member accommodating a motor protector is detachably attached. The fixation member includes a base portion and at least two arm portions. The two arm portions sandwich and hold the accommodating member once the accommodating member is pushed to inside of the two arm portions. The fixation member further includes assisting portions that extend from the base portion to a side of the accommodating member, are caused to pass through assisting portion insertion holes provided in the accommodating member and stick out inside the accommodating member and at positions where the assisting portions sandwich the accommodating member with the arm portions in a case where the accommodating member is attached to the fixation member, and cause an elastic force to act on the accommodating member to restrict movement of the accommodating member in a case where the accommodating member moves in a direction that is parallel to the base portion.

This invention provides a distributed electro-hydraulic hybrid drive hydraulic system for a loader and its control method. It includes a power supply system, a steering drive subsystem, an electro-hydraulic hybrid working subsystem, and a vehicle controller. The steering drive subsystem uses a pure electric cylinder drive and is decoupled from the working system. The electro-hydraulic hybrid working subsystem includes large and small flow motor pump sets, a distribution valve group, working cylinders, and an accumulator. The vehicle controller identifies the working condition based on the collected signals, controlling the small pump to operate independently under low flow conditions, and switching to the large pump or coordinating oil supply under high flow conditions. Pressure energy is recovered through the accumulator, and potential energy is converted into electrical energy using a motor pump with four-quadrant working capability. This application can eliminate steering throttling losses, optimize power matching under all working conditions, achieve multiple composite energy recovery, and significantly improve the overall machine energy efficiency and handling linearity.

The utility model relates to the technical field of desertification control equipment, and discloses a folding straw square automatic planting device which comprises a material box assembly, a folding guide planting assembly, a ditching assembly, a soil covering assembly, a movement assembly and a machine body. The material box assembly adopts a quick-release design and supports quick replacement; the folding guide planting assembly realizes accurate folding and accurate furrow entering of wheat straws through a V-shaped mold and a brush conveying belt; the ditching assembly is provided with a height-adjustable moldboard plow; the soil covering assembly compacts soil through a press wheel; and the movement assembly realizes full-process automation through a PLC (Programmable Logic Controller). The problems that traditional manual laying is low in efficiency and the grass grid structure is loose are solved, the wind prevention and sand fixation effects are remarkably improved, and the device is suitable for desertification control.

Provided is an aqueous working fluid containing compound (A) represented by the following general formula (a-1) and having a weight average molecular weight of 12,000 or less, and water-insoluble compound (B) having a polyoxyalkylene group, wherein the aqueous working fluid has a viscosity at 25°C of 4.0 to 20.0 mPa·s: wherein A is an alkylene group having 2 to 4 carbon atoms, and when there is a plurality of A, the plurality of A may be the same or different; and m is an integer of 1 or more.

The power board of the power unit constituting the charging and discharging device for secondary batteries can be easily, quickly and safely installed, removed and assembled, greatly improving the operability and safety of maintenance. A secondary battery charging and discharging device includes a power unit (1) disposed above a battery container (50) housing multiple batteries (60) to be inspected. The secondary battery charging and discharging device can charge and discharge the batteries (60) using the power unit (1). The power unit (1) has the following structure: a plurality of power boards (20) that contact each battery (60) in the battery container (50) from above and perform a predetermined charge and discharge; a power housing (10) that can suspend the plurality of power boards (20) in a predetermined position corresponding to each battery (60) in the battery container (50); and a guide structure (30) that detachably guides the plurality of power boards (20) in a suspended state within the power housing (10). Through the guide structure (30), the plurality of power boards (20) are detachably suspended within the power housing (10) and held in a suspended state without falling off.

The utility model discloses a windproof drip irrigation tape, including the body of a belt, the inside of body of a belt is equipped with inner lining, and the both sides of body of a belt are equipped with the edge tape, and the top of edge tape is equipped with a plurality of through -holes, and the top of through -hole is provided with the needle cap, and the bottom of needle cap is provided with the protruding block, and the inner wall of through -hole is provided with the plastic needle, and the outer wall of plastic needle is provided with a plurality of barbs, and the top of plastic needle is equipped with the recess, the utility model discloses through setting up the through -hole in the both sides edge tape of drip irrigation tape, cooperate with the plastic needle of needle cap use, can be inserted into the soil of plastic needle through the through -hole and realize steady fixed, further promoted the fixed intensity, effectively resist the impact of strong wind, fundamentally solved the traditional drip irrigation tape easy because of wind force and displace, twist, lead to the problem of watering, topdressing and pest control uneven, avoided the soil covering on drip irrigation tape influence drip path, guaranteed the smoothness of drip irrigation process, eliminated the drip irrigation tape partial pressure damage risk caused by covering soil simultaneously.