113results about How to "Easy to observe and operate" patented technology

The invention provides an optimum cold rolling continuous annealing unit steel coil sorting method and a system thereof, belonging to the field of metal material processing information technique; the optimum method comprises the steps as follows: 1: the candidate steel coil is respectively sorted from highness to lowness and from lowness to highness according to the annealing temperature so as to form two initial sorting proposal; each initial sorting proposal is optimized by adopting width preference sorting or thickness preference sorting so as to obtain a plurality of groups of initial feasible sorting proposals; 2: the sorting proposal with the minimum optimum object value is selected out of the initial steel coil sorting proposals so as to be taken as the initial feasible production plan; 3: the initial feasible production plan is adjusted by using exchanging neighborhood tabu searching and alternative path conversion neighborhood searching and by taking the minimum optimum sorting model object value as the object. The corresponding system is provided on the basis of the method of the invention; therefore, switching during the execution process of the production plan is reduced, the transition is smooth, the product quality is improved and the yield is improved.

The invention relates to a fabrication method for a dental implanting positioning and orienting guide plate. The fabrication method has the detailed steps as follows: wax teeth in coincidence with the false tooth shape are modeled by wax at the missing tooth zone of the plaster modelIof a patient; the plaster with wax teeth are turnover into a total plaster model II; the insertion path of implanting screws are determined according to the positions of the teeth and the shapes of the alveolar bones; holes are bored downwards from the occlusal faces of the teeth needing to be repaired on the modelIIby a fissure bur to cause the holes to be communicated the whole model; the bored model IIis placed in a vacuum pressed film machine to be made into a vacuum pressed film denture base which forms a tubular channel in the hollow hole; the vacuum pressed film denture base is taken down from the modelIIto trim; the vacuum pressed film denture base is put on the modelI, the bottom part of the tubular channel is trimmed to cause the lowest point to be slightly higher than the modelI, and the trimmed vacuum pressed film denture base is the dental implanting positioning and orienting guide plate. The positions and the direction of the implanting screws can be determined before operation by the fabrication method, and the implanting screws can be accurately moved to the oral cavity of the patient in the operation.

The invention discloses a multi-boundary test water tank for underwater vibration simulation, and the water tank comprises a tank box in a U-shaped structure. Two opening sides of the tank body are respectively provided with a baffle plate, and the interior of the tank body is provided with two partitioning plates. Each partitioning plate is parallel to the corresponding baffle plate, and is perpendicular to the bottom surfaces and two side surfaces of the tank body. Two side surfaces of the tank body are respectively provided with a plurality of groups of slots, and the partitioning plates are fixed in the slots and are symmetrically arranged based on the central position of the tank body. The bottom plate of the tank body is provided with a connecting hole and a drainage hole. The connecting hole is provided with a sealing ring, wherein the section of the sealing ring is semi-circular, and the central part of the sealing ring is provided with a connecting plate. The connecting plate is formed by the welding of an upper connecting plate, a lower connecting plate, and a central rib plate. The upper connecting plate is connected with the sealing ring, and the lower connecting plate is connected with a testing vibration bench. The tank can lengthen the tank body through splicing, is convenient to improve, can simulate different boundary conditions, is wide in application range, can enable a user to watch wave change effects under different vibration conditions through transparent glass, and is very convenient for operation and observation.

The invention relates to medical treatment experiment equipment, and particularly relates to a multifunctional disposable transfusion and cross blood-matching test combiner. The multifunctional is provided with a small transparent plastic test tube, wherein two sample adding tubes are arranged at the upper end of the small test tube. The multifunctional disposable transfusion and cross blood-matching test combiner is characterized in that a reagent adding and sample collecting hole is formed in the upper end of the small test tube, a liquid pumping pipe is crossly connected to a place, which is at a distance 4-10mm from the bottom surface and is provided with a sample collecting observer, of the lower part of the small test tube, the sample collecting observer is provided with a pipette, a transparent plastic film sleeve is connected to the tail end of the pipette, and a manual air bag is connected behind the transparent plastic film sleeve. According to the multifunctional disposable transfusion and cross blood-matching test combiner, the problems that no special tool exists for an existing transfusion and cross blood-matching test, the existing transfusion and cross blood-matching test is very complex and tedious to operate due to the adoption of a common test tube, and is error-prone. The invention provides a multifunctional existing transfusion and cross blood-matching test combiner.

The invention relates to electric energy meter test equipment. A control circuit of the electric energy meter test equipment comprises a controller, a 485 communication interface circuit, and at least one test circuit used for carrying out testing on clock output, pulse output, alarm output and tripping output. The test circuit is provided with an input interface connected with corresponding output of an electric energy meter to be tested in corresponding testing, and the corresponding output comprises the clock output, the pulse output, the alarm output and the tripping output. An output interface of the test circuit is connected with the controller, the two ends of the 485 communication interface circuit are connected with the controller and the electric energy meter respectively, and the controller is further in input connection with a switch used for switching test items. Before the electric energy meter passes through an alignment table of a standard meter, the tripping output, alarming and other items are tested through the test equipment, utilization efficiency of the alignment table of the standard table is improved, and production capacity is promoted.

The invention relates to an intelligent relay protection testing instrument with good display effect and capable of automatically adjusting an angle. The intelligent relay protection testing instrument comprises a main body and supporting units which are arranged at the two sides of the main body, each supporting unit comprises a mobile unit, a first fixed block, a rotary rod, a sleeve and a roller, a dustproof mechanism comprises a driving unit, a fixing rod and two telescopic units, each telescopic unit comprises a second fixed block, a second connecting rod, a dustproof cloth and a plurality of telescopic components, and each telescopic component comprises a sliding block, a hinge block and two first connecting rods. The intelligent relay protection testing instrument with good display effect and capable of automatically adjusting the angle has the advantages that distance between the hinge blocks in the two telescopic units is increased by virtue of the dustproof mechanism, the dustproof cloth is unfolded to protect a display screen, and external destroy is avoided, so that equipment has a good display effect; besides, an angle of the main body is adjusted by virtue of the supporting units, so that the display screen is dead against a worker, the worker can carry out visual observation and operation conveniently, and practicability of the equipment is improved.

The invention relates to the technical field of road laying and discloses a roller for road laying. The roller for the road laying comprises a bottom plate; a mounting box is fixedly connected to theright side of the bottom plate; the bottom of the mounting box is open; an electric push rod is fixedly connected to the internal wall of the top of the mounting box; and a first U-shaped plate is fixedly connected to the bottom end of the electric push rod. According to the roller for the road laying, by arranging a driving motor, a rotating column and a spiral blade, an effect of crushing biggersoil blocks and stone blocks is achieved; by arranging an asynchronous motor, a hydraulic machine and a pressing plate, an effect of pressing the crushed soil blocks and stone blocks is achieved; andfinally, by using a rolling shaft, an effect of rolling the soil blocks and the stone blocks is achieved; and therefore, situations that the soil blocks and the stone blocks cannot be rolled and therolling efficiency is low are avoided, and the working efficiency of the roller is greatly guaranteed to achieve an effect of being convenient for working personnel to reasonably control the working time.

The invention provides an animal specimen making device, and relates to the field of specimen making equipment. The animal specimen making device comprises a base, a support rod, a connecting rod, a support seat, a container with an opening formed in the top and a video recording device; the bottom of the support rod is fixed to the base, the support seat is fixed to the support rod through the connecting rod, the container is arranged on the support seat, the video recording device is installed at the top of the support rod, a water inlet device is arranged on one side of the container, a water outlet device is arranged on the other side of the container, the container further comprises a water pump installed on the water inlet device, and the container is further provided with a button which is connected with the water pump and arranged on the container. The animal specimen making device is reasonable in design, low in cost, convenient to operate and observe and very practical and efficient.

The invention proposes a vehicle-mounted side parking assist device, which includes a liftable support frame so that when the support frame is lifted, the front two wheels or the rear two wheels of the car can be lifted to a position away from the ground, and the support frame can be directly erected. Installed directly on the vehicle, the hydraulic cylinder can be used to realize direct vertical lifting, or it can be hinged with the positioning rod set on the chassis of the car to realize rotating and folding lifting. There is a power wheel at the bottom of the support frame, and the power wheel can be controlled to achieve forward and reverse rotation. When parking on the side is required, drive the two wheels that are not supported by the support frame into the parking space, and then use the device to push the other two wheels to the height above the ground, and the power wheel starts to rotate to move the car sideways into the parking space. After the support frame shrinks, the parking action can be completed. If the car needs to be moved out of the parking space, the same operation can be used and the power wheel can be rotated in reverse.

The invention discloses an intelligent stubble height detection device. The device is arranged between a combine harvester body and a cutting table, and comprises a cutting table height detection sensor arranged between the body and the cutting table; the signal output end of the cutting table height detection sensor is connected with a cutting table height signal processing unit; the signal output end of the cutting table height signal processing unit is connected with a central data processing unit arranged in a cab of a combine harvester; and the cutting table height detection sensor can be used for accurately detecting the height of the cutting table of the combine harvester in real time, acquiring corresponding stubble height for displaying, and giving a corresponding alarm when the height of the cutting table does not meet the working requirement. The device can work in a severe environment; and because a noncontact structure is adopted for accurate measurement, damage to a cutting knife can be avoided, crops are fully harvested, damage of the harvester is avoided, safety and normal operation of the cutting table of the harvester are ensured, and convenience is brought to observation and operation of working personnel.

The invention relates to an intelligent portable navigator based on an internet of things. The intelligent portable navigator comprises a mounting plate, a body, a protection plate, an angle adjusting mechanism, a sucker and two driving units, each driving unit comprises a first driving motor, a first driving shaft, a moving block, a first connecting rod, a fixing rod and a buffer block, the angle adjusting mechanism comprises a hanging rod, a first adjusting unit and a second adjusting unit, the first adjusting unit comprises a second driving motor, a second driving shaft and a rotating rod, and the second adjusting unit comprises a third driving motor, a second connecting rod and a third connecting rod. According to the intelligent portable navigator based on the internet of things, an angle of the mounting plate is changed through the angle adjusting mechanism, so that the body in a mounting notch faces a driver, the driver conveniently and visually observe operation, an antiskid plate rotates and covers the mounting notch through the adjusting units, the body is isolated, a display screen is effectively protected, device damage caused by various reasons is avoided, and device practicability is improved.

A portable visual laryngoscope includes a handle, a laryngeal lens and a suction device. A camera is arranged at the end portion of the laryngeal lens. A display for display images taken by that camera is arranged on the handle. The laryngeal lens has a circular arc shape. One end of the laryngeal lens is connected with the handle, and the other end of the laryngeal lens is provided with a spatula, which is bent toward the inner side of the circular arc of the laryngeal lens. The suction device comprises a suction pipe, a hose and a portable negative pressure source. The suction pipe is arranged along the axial direction of the handle, and extends toward the end of the laryngeal lens. One end of the suction pipe is arranged at the lower end of the laryngeal lens, and the other end of the suction pipe is communicated with the portable negative pressure source through the hose. The portable negative pressure source is provided with a switch. The portable visual laryngoscope has the advantages of simple structure, simple and convenient operation and timely cleaning of foreign bodies in the oral cavity of patients in the laryngoscope observation room, matches with the spatula to expandthe observation field of vision and facilitates clearer detection of cameras, is convenient to operate, and has very broad application prospects.

The invention provides a portable multi-function telescope / microscope dual-use device, which relates to a telescope and a microscope, and more particularly, to a portable multi-function telescope / microscope dual-use device capable of being used on various outdoor occasions and having functions of digital image conversion, photographing, and transmission. The invention comprises a monocular telescope, an additional objective lens, a microscopic observation support and a lighting connection attachment, and a digital image conversion adapter. The additional objective lens is arranged on the objective lens end of the monocular telescope to constitute a microscope. The microscopic observation support and the lighting connection attachment are connected to the microscope to form a combined body of a microscope with a support and illuminated with ambient light and from a built-in light source. The digital image conversion adapter is connected to the eyepiece end of the monocular telescope to achieve the function of converting the images obtained from the telescope or the microscope into digital ones. Based on the two basic use functions of telescopic observation and microscopic observation, the device of the invention has the portable function allowing it to be carried and used portably.

The invention relates to a label printer. The whole body of the label printer is nearly square. The front of the printer is provided with a label box, a label box locking rod, a display area, a function key area, a label box pushing-out key and a cutter key. The lower side of the printer is provided with a battery box cover. The part of the battery box cover close to the back side gradually converges to form a slope. The right side of the printer is provided with a label outlet. The middle of the upper side of the printer is provided with an external interface area. The left end of the upper side of the printer is provided with a hook structure. The groove of the upper part of the back of the printer is equipped with a magnet adsorbing block. The lower part of the back side of the printer is partly and inwardly sunken to form a holding groove. The consistent pattern of the large head and small body structure and manual keyboard input command of a traditional label printer is abandoned, the label printer is designed to be a nearly square structure which is a breakthrough, a mobile phone data line is connected to the external interface area and is a command input is carried out through a mobile phone, the label printer can be arranged in multiple states, and a wrong operation can be prevented.

An automatic pressing apparatus for welding the spliced plate of container is composed of a pressing frame extended in the welding direction, several pressing legs arranged on said pressing frame at intervals and fixed to it in a rotary mode, and a pressing force regulator between said pressing frame and pressing legs. Said pressing force regulator is an air bag extended along said pressing frame.

The invention provides a miniature plant incubator, which includes a tank body, an environment detection module, an environment control module and a master control module. The environment detection module is arranged inside the tank body and used for detecting environmental information inside the incubator. The master control module is connected to the environment detection module and the environment control module and is used for collecting environmental information in the incubator via the environment detection module and controlling the environment control module to adjust the environmentalcondition in the incubator. The environment control module is arranged inside the tank body and is used for adjusting the environment inside the incubator according to the control information of themaster control module. The environmental information includes temperature, humidity, illumination intensity and carbon dioxide concentration. The miniature plant incubator can automatically detect andcontrol temperature, humidity, illumination intensity and carbon dioxide concentration in the incubator, is improved in integrated level, and is easy to operate and observe.

The invention relates to an automatic combined drilling and sampling device capable of being split and used independently for mineral exploration. The automatic combined drilling and sampling device capable of being split and used independently for the mineral exploration comprises a main frame, a drill bit and a sampling box. A hydraulic rod is arranged on the inner wall of the top end of the main frame, and the hydraulic rod is fixedly connected with the main frame. A connecting frame is connected to the bottom end of the hydraulic rod. A connecting plate is arranged at the bottom of the connecting frame, the connecting plate is fixedly connected with the connecting frame, and the connecting plate is movably connected with the main frame. The automatic combined drilling and sampling device capable of being split and used independently for the mineral exploration has the beneficial effects that through the arrangement of the connecting plate, bolts, a cylinder body, a connecting shaft, a gear ring and a gear strip, the connecting plate and the cylinder body constitute a detachable structure through the bolts, when the device is required to be split, the cylinder body is separatedfrom the device by unscrewing the bolts, workers carry out supporting operation on the cylinder body, a driving assembly of the inner side of the cylinder body is started, drilling work of minerals onthe ground surface by the workers can be realized, and the flexibility of the device is enhanced.

The invention relates the field of medical instrument, and relates to a full automatic electric induced abortion suction unit, in particular to a full automatic electric induced abortion suction unit used in a pregnancy termination operation. The full automatic electric induced abortion suction unit comprises a collection container and a negative pressure pump. The collection container is connected with a first air pipe, the collection container is connected with an electromagnetic valve through a second air pipe, the electromagnetic valve is connected with an air storage tank through a third air pipe, and the air storage tank is connected with the negative pressure pump through a fourth air pipe. The suction unit further comprises an automatic control system. The automatic control system comprises a keyboard control system and an analog-digital conversion control system. An output terminal of the keyboard control system is connected with the analog-digital conversion control system. The analog-digital conversion control system comprises a first negative pressure sensor and a second negative pressure sensor. The first negative pressure sensor is connected with the air storage tank through a fifth air pipe and connected with the negative pressure pump. The second negative pressure sensor is connected with the collection container through a sixth air pipe and connected with the electromagnetic valve. The pressure of the full automatic electric induced abortion suction unit is not too large or too small.

The invention discloses a transparent visual microwave oven integrating display and control functions. The transparent visual microwave oven comprises an oven body, a control system and an oven door,wherein the interior of the oven body is provided with a cavity used for accommodating food; the control system is electrically connected with a microwave system and used for controlling the work of the transparent visual microwave oven; the oven door comprises a door body, a waterproof steam baffle assembly, a transparent display and a door cover, and is of an overall structure; a human-computerinteractive operation interface and a display component are both arranged in an oven door area; a control operation area is no longer arranged independently; the side of the door body is hinged with the oven door; the door body is used for structural supporting; and the obverse side of the door body is fixedly connected with the door cover through a screw. According to the transparent visual microwave oven disclosed by the invention, a user operation panel is no longer arranged independently; through the reliable design of the overall door body, the observation, display, control, recording andplaying functions are integrated; and not only is the structure of the transparent visual microwave oven optimized and is an enough space provided for the improvement of the effective volume of the cavity, but also the observation operation of a user becomes more convenient and rapid, and the user experience is enhanced.

The invention discloses a mobile river water quality monitoring device, which comprises a first installation cylinder, a second installation cylinder, a detection mechanism and a first power mechanism, the first installation cylinder and the second installation cylinder are connected through an installation plate, the detection mechanism and the first power mechanism are respectively arranged at two sides of the installation plate, and the second power mechanism is arranged at the upper end of the second installation cylinder. According to the invention, the floating mounting cylinder and the first power mechanism are arranged, that is, the device can move on the water surface, and compared with a fixed water quality monitoring device, the device has a larger monitoring range; the second power mechanism is adopted to limit the depth of the sampling barrel, sampling detection of different depths of the same water area is achieved, the problem that the sampling depth of an existing device is limited is solved, due to the arrangement of the overturning mechanism, turbid liquid or sludge at the bottom layer of the water area can be sampled, workers do not need to drive a detection ship for manual sampling, and the monitoring cost is saved; the infusion pump, the inner flow channel and the water quality monitor are arranged, so that real-time sampling and detection functions are realized, and the loss of human resources is reduced.

The invention discloses a crane capable of adjusting a supporting point. The crane comprises a power box, wherein front and rear end surfaces of the power box are symmetrically and rotatably connectedwith four pairs of wheels in a matched mode; a drive shaft is fixedly connected in the power box; the upper end surface of the drive shaft is fixedly connected with a drive shaft body which upwards extends to the outside; the upper side of the power box is equipped with a rotary box which is rotatably connected with the drive shaft in the matched mode; the tail end of the left side of the upper end of the rotary box is fixedly connected with a cab; a slide box slides to change the position, in a lifting lever, of a supporting rod, so that the supporting point of the crane is changed; the lever principle is utilized to meet different lifting heights and different lifting weight needs through constant motor power; and the rotary box can drive the cab and the lifting lever to rotate together, so that operation is convenient while observation operation of a driver is convenient; and moreover, a rotating function and a lifting function share one motor, so that resources are saved, and thecost is reduced.

The invention relates to kitchen appliances, in particular to a soybean milk machine. The machine comprises a cup body, the cup body is characterized by comprising a cup body base and a cup body shelldisposed outside the cup body base, an interface interaction portion protruding outward is arranged on the cup body shell, an interface interaction region is formed outside the interface interactionportion, and an accommodating cavity for accommodating a circuit board is formed inside the interface interaction portion. Compared with the prior art, the machine provides more convenience for consumers to observe and use the soybean milk machine, a machine head is liberated for the soybean milk machine with a motor arranged on the upper portion, no control device is needed inside the machine head, the space inside the machine head is reduced, the thickness of the machine head can be further reduced, the weight of the whole machine is correspondingly reduced, and elderly and children can moreconveniently lift the machine head.

The invention relates to a visible laryngoscope. The visible laryngoscope comprises a handle end and a laryngoscope end; a camera assembly and a display assembly are arranged in the handle end; the laryngoscope end comprises a connecting sleeve, a camera guiding channel and a hydrophilic guiding groove sleeve; the camera assembly comprises a camera; the camera extends to an inner end of the cameraguiding channel through a connecting hose; and the hydrophilic guiding groove sleeve and the camera guiding channel are in parallel. The visible laryngoscope has hydrophilic lubricating performance.

The invention provides an embossing plate roller surface defect detection device, and relates to the technical field of embossing plate roller surface defect detection.The embossing plate roller surface defect detection device comprises a base, a main body of the base is of a rectangular structure, transverse grooves are formed in the front side and the rear side of the top end of the base and used for sliding a pedestal, and a support is further fixedly connected to the top end of the base; a spraying box is further arranged on the top end face of the support, a round hole is further formed in the center of the interior of the spraying box and matched with the insertion pipe, and a spraying frame is further arranged at the bottom end of the insertion pipe, so that the problems that in the existing comparison process, due to the difference of the length and the diameter of the plate roller, observation difference exists, and missing detection is prone to occurring are solved; a frame body driven by an electric push rod A is arranged at the top end of the base, and a driving wheel which is arranged at the bottom end of the frame body and driven by a motor A can be matched with a guide wheel mounted at the top end of the base body to quickly limit and drive the printing rollers of different specifications, so that the self-adaptive detection of the printing rollers is realized.

The invention belongs to the field of an electronic instrument and particularly relates to an interphone with a hand protection glove. The interphone with the hand protection glove comprises a shell, control keys, a display screen, the hand protection glove and a clamping groove, wherein the control keys and the display screen are arranged on the shell; the clamping groove is formed in the shell; an elastic clamping ring is arranged at the front end of the hand protection glove; the clamping ring is matched with the clamping groove to limit the hand protection glove. Therefore, the interphone with the hand protection glove can well protect the hand in cold winter and does not influence working efficiency; a transparent observing window is arranged on the hand protection glove and can be convenient to observe and operate and correct operation, cannot be influenced due to shielding on the control keys; moreover, the hand protection glove is convenient to disassemble, also can be simply disassembled when not in use and is very flexible and very convenient.

The invention provides a staff statistic device based on a finger vein technology. The device comprises a mounting groove, a rotating plate, a placing groove, a sponge plate, a display screen, a mounting frame, a convex lens, and a sucker. The rotating plate is arranged in the mounting groove. The rotating plate is connected with the mounting groove through a mounting pin. The placing groove is arranged on the upper end face of the rotating plate. The sponge plate is arranged in the placing groove. The design realizes that the a user can rapidly and effectively identify a finger vein, so as to improve working efficiency of staff statistics, ensure cleanness of a fingerprint groove base. The display screen is arranged on the upper end of the right end face of a counter. The mounting frame is arranged on the front end of the display screen. The convex lens is arranged in the mounting frame. The sucker is connected with a fixing base through a connecting rod. The design realizes that a user can observe functions of data contents, and operation is convenient, and practicability is good. The device provides convenience for users to rapidly complete data arrangement. The device is convenient in use, convenient in operation, good in stability, and high in reliability.

The invention relates to the technical field of hot cell structures, and further relates to a squint window structure for a hot cell. The squint window structure is characterized by comprising a squint window pressing plate (1), an inner glass pressing frame (2), a squint window reinforcing frame (3), first squint window glass (41), second squint window glass (42) and a squint window outer frame (5); the first squint window glass (41) is positioned between the inner glass pressing frame (2) and the squint window reinforcing frame (3), and the inner glass pressing frame (2) is used for fixedlypressing the first squint window glass (41) into the squint window reinforcing frame (3); the squint g window frame (5) is fixed on the side, opposite to the inner glass pressing frame (2), of the squint window reinforcing frame (3); and the second squint window glass (42) is fixed in the squint window frame (5). The squint window structure for the hot cell is convenient for an operator to observeand operate, and the accuracy and convenience of the operation are improved; radioactive rays in the hot cell can be prevented from leaking out, radiation pollution is avoided, and the environment and the personal safety of workers are effectively protected; and enlarging of visual angle of the operator is facilitated.

An electrified high-voltage line foreign matter removing device is disclosed in the invention, and comprises a high-voltage line, a supporting block and a connecting frame, rollers are connected to the front portion and the rear portion of the top of the high-voltage line, connecting rods are fixedly connected to the inner sides of the rollers, connecting plates are installed on the outer sides of the connecting rods in a penetrating mode, and a fixing frame is fixedly connected to the rear portions of the connecting plates; a first motor is installed in front of the interior of the fixing frame, the output end of the first motor is fixedly connected with a first gear, the left front portion of the first gear is connected with a second gear, a second motor is installed on the inner side of the top of the fixing frame, and the output end of the second motor is fixedly connected with a supporting plate; and a third motor is installed in front of the interior of the supporting plate, and the output end of the third motor is fixedly connected with a shaft rod. The electrified high-voltage line foreign matter removing device not only can perform rotary cleaning on a high-voltage line, but also can automatically move to remove foreign matters, and is convenient for a user to observe and operate.

The invention discloses a preparation method of ion-exchange polyvinyl alcohol micro-spheres. The method comprises the steps that a water-soluble functional monomer is dissolved in water, and an initiator, a cross-linking agent and a polyvinyl alcohol aqueous solution with the mass fraction of 5%-15% are added for even mixing to obtain mixed liquid; an oil phase containing an emulsifying agent isprepared, stirred and heated to 40-80 DEG C, then the obtained mixed liquid is added into the oil phase, stirring is conducted for 10-60 minutes, then a catalyst is added for reaction for 3-6 hours, and after reaction is completed, an obtained product is washed to obtain the ion-exchange polyvinyl alcohol micro-spheres. According to the method, the technology is simple and convenient to operate, reaction heat is fully used, energy consumption is relatively low, synthesis time is short, the reaction temperature is reduced, and the production efficiency in industrialized production is improved;the prepared polyvinyl alcohol micro-spheres have good deformability and elasticity, are smooth in sphere surface, even in dispersion and high in drug loading capability and have good biocompatibilityand stability at the same time.

The invention discloses a battery pack compression plate fastening mechanism of a rail transit vehicle. The battery pack compression plate fastening mechanism comprises a battery cabinet, a pluralityof partitions arranged horizontally in the battery cabinet and used for mounting batteries, and a plurality of compression plate components arranged on the partitions. The compression plate componentsare arranged in included-angle positions of the batteries on the partitions and are used for clamping included-angle regions of the corresponding batteries. Therefore, the independent compression plate components arranged on the partitions help fixedly fasten the included-angle regions of the batteries; compression plates are simple in structure and convenient to operate; main parts of the batteries are exposed, so that it is convenient for maintenance personnel to observe and operate the batteries; the compression plate components are used for fastening the corresponding batteries respectively, no cooperation is required, and accumulation of mounting errors is avoided. The invention also discloses a rail transit vehicle, having the advantages above.