136results about How to "Achieve blocking" patented technology

The invention discloses an unmanned aerial vehicle route planning and dynamic management and control method for an urban low-altitude airspace, and relates to the technical field of unmanned aerial vehicle route planning and dynamic management and control, and the method comprises the steps: dividing the low-altitude airspace into a basic flight layer, a buffer anti-collision layer and an emergency guarantee layer in the vertical direction; setting different air route grades and limitation rules in different areas in the horizontal direction; generating a basic airway network skeleton and performing structure optimization; obtaining the operation state and environment updating data of the unmanned aerial vehicle; semantic annotation is carried out on each leg and node in the basic airway network skeleton, and airspace regulations, supervision rules, flight limiting areas, temporary control areas and recommended flight corridor information are embedded into a semantic layer of the airway network; and inputting the basic airway network skeleton, the semantic annotation information and the real-time monitoring data into an urban low-altitude airspace management and decision-making platform. According to the invention, cooperative scheduling and avoidance among multiple unmanned aerial vehicles are realized, and the operation efficiency of an air route network and the cooperative work capability of the unmanned aerial vehicles are improved.

The present invention relates to the field of flange production technology, and specifically to an automated drilling device for wind power flange production, comprising: a tooling table; a fixed bracket; a dustproof multi-element drilling unit, wherein the dustproof multi-element drilling unit is arranged between the fixed bracket and the tooling table and is connected to the fixed bracket; a positioning support unit, wherein the positioning support unit is connected to the tooling table; an air guide and dust collection unit, wherein the air guide and dust collection unit is connected to the tooling table and to the dustproof multi-element drilling unit; wherein the dustproof multi-element drilling unit comprises: a multi-unit synchronous perforating component, a spacing control component and an isolation and protection component, and by providing the dustproof multi-element drilling unit, the drilling of the wind power flange can be completed at one time, and the blocking and recovery of debris can be completed during drilling, thereby greatly improving the processing efficiency, facilitating the subsequent cleaning of the tooling table, reducing pollution to the surrounding environment, and thereby improving production efficiency.

The utility model provides a roll-over stand for hoisting roll-over equipment, which comprises a main support and a hanger support, the main support is provided with a first end and a second end, the first end is hinged with the front end of a base frame, and the second end is hinged with the hanger support; the overturning frame has a first posture, a second posture and a third posture, when the overturning frame is in the first posture, the main support is vertically arranged, the hanging bracket support is perpendicular to the main support and extends towards the side away from the base frame, and the overturning frame is in a hoisting state; the overturning frame overturns towards the base frame, so that when the main support is horizontally arranged, the overturning frame is converted into a second posture; and when the hanging bracket support is folded to be parallel to the main bracket and extends towards one side far away from the main bracket, the turnover frame is switched to a third posture. According to the utility model, the switching of three postures of the turnover frame is matched with the base frame, the hanging bracket and the turnover driving piece, so that the lifting, fixed turnover and avoidance of the vertically arranged main crane are realized, and the hoisting, installation and fixation of the tower crane are quickly completed.

The invention relates to the technical field of medical instruments, and particularly discloses a measuring structure, a flexible mechanical arm, a surgical robot and a surgical robot system.The measuring structure comprises a flexible measuring wire and a stay wire detection module; the flexible measuring wire is arranged in the flexible mechanical arm in a penetrating mode along the extending path of the flexible mechanical arm, one end of the flexible measuring wire is connected with a movement joint of the flexible mechanical arm, and the other end of the flexible measuring wire is connected with the stay wire detection module. When the flexible mechanical arm acts, the flexible measuring wire moves under traction force, the pull wire detection module detects the moving distance of the flexible measuring wire, and the swing angle of the moving joint is obtained according to the moving distance. The rotating angle of the rotating joint can be detected in a high-precision mode, and movement of an instrument can be accurately controlled conveniently.

The invention relates to the technical field of information security, and discloses a terminal clipboard sensitive information cross-application leakage real-time interception method, which comprises the following steps of: registering a clipboard access hook function in a kernel layer or a system framework layer of a terminal operating system, and capturing a clipboard reading operation in real time; comparing an application program identifier corresponding to the captured reading operation with an application program identifier of a clipboard owner, and judging whether the access is cross-application access or not; when the access is determined to be cross-application access, triggering a clipboard content scanning engine to perform sensitive information identification on texts, images and file paths in a clipboard; and obtaining an evaluation result based on a preset sensitive information rule base and the dynamic strategy engine. A clipboard access hook function is deployed in a kernel layer or a system framework layer, millisecond-level capture and blocking of cross-application clipboard reading operation are achieved, and traditional extensive management based on application permission declaration is upgraded to refined management and control based on content risk identification.

The invention discloses a nuclear power plant penetration piece outer wall inspection device which comprises a detection mechanism, a pressing mechanism, a lifting mechanism and an avoiding mechanism. According to the nuclear power plant penetration piece outer wall inspection device, the avoiding mechanism is arranged, the pressing mechanism, the detection mechanism and the lifting mechanism can be driven to do radial horizontal movement, so that avoiding of a horn cover structure of a pressure container is achieved, the lifting mechanism is arranged, the detection mechanism can be driven to do axial lifting movement, and the detection efficiency is improved. The detection mechanism can move up and down and have the scanning function, automatic scanning of the outer wall at different heights is achieved, meanwhile, by arranging the pressing mechanism, the detection mechanism can be pressed on the outer wall of the penetration piece in the radial direction, the scanning effectiveness of the detection mechanism is improved, and the detection efficiency is improved. The nuclear power plant penetration piece outer wall inspection device solves the problem that the penetration piece outer wall is uneven and difficult to scan due to an intersection line.

The utility model relates to the technical field of hydroelectric generators, and discloses a hydroelectric generator with an anti-winding function, which comprises a generator rotor, a support column, an outer shell and a turbine blade, the top end of the turbine blade is connected with a rotating shaft, the outer part of the rotating shaft is connected with a connecting rod, and the outer part of the connecting rod is sleeved with an intercepting sleeve. According to the hydroelectric generator with the anti-winding function, the intercepting sleeve is arranged on the front side of the turbine, the effects of blocking and collecting filiform impurities such as aquatic plants can be achieved, the problem that the filiform impurities are wound on turbine blades and are not easy to clean is solved, a plurality of burrs are arranged outside the intercepting sleeve, the intercepting efficiency can be improved, and the practicability is high. And meanwhile, through cooperation of a connecting rod and an intercepting sleeve, the intercepting sleeve can be detached, so that convenience is provided for cleaning of the intercepting sleeve, and manual operation is facilitated.

The utility model provides a tray foot with a protection structure and a tray, the tray foot with the protection structure is suitable for being arranged at the corner of a bearing plate of the tray to support the bearing plate, and the tray foot comprises a first surface suitable for being in contact with the lower surface of the bearing plate to support the bearing plate, and a second surface suitable for being in contact with the lower surface of the bearing plate; the second surface is opposite to the first surface and is suitable for being in contact with the ground or a bottom plate; the side surface is arranged between the first surface and the second surface; the first protection edge structure is arranged on a part of the edge of the first face, protrudes out of the first face and is suitable for being located on the outer side of the corner of the bearing plate when the first face makes contact with the lower surface of the bearing plate so as to protect the corner of the bearing plate, and therefore damage to the corner of the bearing plate due to collision or impact and the like is prevented. And the attractive appearance and the service life of the bearing plate are prevented from being influenced by damage.

The application provides a detection device for rubber semi-products, and belongs to the technical field of tire detection. In view of the problems of detection dead angle and the inability to detect defects in the thickness detection device for rubber semi-products, the application comprises a workbench, a thickness detection module slidingly arranged on the workbench, the thickness detection module comprising two laser displacement sensors with round dot light spots symmetrically arranged on the upper and lower sides of the avoidance channel, the connecting line between the emitting end and the receiving end of the laser displacement sensor being perpendicular to the extension direction of the avoidance channel, so that the measurement plane of the laser displacement sensor is perpendicular to the detection direction of the rubber semi-product, a defect detection module arranged above the workbench and located on the side of the thickness detection module away from the avoidance channel, and a light source. The application integrates the thickness detection module and the defect detection module, realizes multifunctional detection of the same device, and realizes low-cost and dead-angle-free detection through the specific thickness detection module and the specific installation direction.

The utility model discloses a self-driven electric ceiling screen, which belongs to the field of ceiling screens and comprises a mounting part, a driving component, a clamping component and a ceiling screen. The mounting part is mounted at an indoor channel; the driving assembly is mounted on the mounting part; the clamping assembly is rotationally mounted in the mounting part, and the clamping assembly is connected with the driving assembly; a winding rod of the smoke-blocking vertical wall is installed on the clamping assembly, and the lower end of a smoke-blocking part in the smoke-blocking vertical wall penetrates through a strip-shaped opening in the installation part. Wherein a storage battery is arranged in the mounting part, and the storage battery is electrically connected with the driving assembly and supplies power to the driving assembly; according to the technical scheme, when the driving assembly receives the action signal sent by the fire alarm system, the driving assembly is started by means of the electric quantity of the storage battery, the risk can be reduced, the influence of a circuit is low, the using effect is good, and the good using prospect is achieved.

The application provides a parameter optimization method and system of an integrated inductance filter, a terminal and a storage medium, relates to the technical field of regulator parameter optimization, and comprises the following steps: obtaining an inductance temperature parameter, a filter capacitance value and an actual voltage value; analyzing the inductance temperature parameter and the filter capacitance value to determine a filter cutoff frequency and an effective inductance value; analyzing the actual voltage value, the filter cutoff frequency and the effective inductance value to determine an inductance adjustment amount; obtaining an initial proportional gain and a current output current; analyzing the inductance adjustment amount, the effective inductance value, the initial proportional gain and the current output current to determine regulator optimization parameters; and controlling a preset regulator to work according to the regulator optimization parameters. The application has the effect of ensuring the stability of regulator operation.

The utility model discloses a Bluetooth sound box with a waterproof key structure, which comprises a shell, an upper cover, a lower cover, a mainboard, a loudspeaker, a battery and a waterproof film, and is characterized in that the upper cover and the lower cover are symmetrically arranged on the upper side and the lower side of the interior of the shell to form a placement space; wherein the mainboard is fixedly arranged in the placing space in a manner of being parallel to the upper cover, the loudspeaker is positioned in the placing space and vertically penetrates through the mainboard, the battery is positioned between the mainboard and the lower cover, and the lower cover and the shell are correspondingly provided with function keys in the horizontal direction. And the waterproof film is attached to the surface of the lower cover in a manner of covering the functional keys in the vertical direction, and is positioned on the inner side of the shell. The Bluetooth sound box with the waterproof key structure is simpler in waterproof structure, convenient to assemble and low in cost.

The application discloses a kind of circuit layout signal wiring's graphic avoidance method, device, medium and equipment.The method comprises: obtaining current signal wiring in circuit layout and its current graphic as obstacle through;According to the outer package graphic of preset rule construction surrounding current graphic, it is used as obstacle graphic;Obstacle graphic is detected whether with other graphics without being as obstacle intersects;When detecting intersecting graphic, it is used as obstacle, and outer package graphic is constructed according to preset rule and surrounds intersecting graphic;The part of obstacle graphic and other outer package graphics is not merged to replace obstacle graphic, and the step that whether the other graphics without being as obstacle intersects with the obstacle graphic is repeatedly detected, until there is no intersecting graphic is detected;Current signal wiring is adjusted based on obstacle graphic, to realize graphic avoidance.The application can realize that signal wiring avoids all possible graphics to become obstacle after adjustment, improves layout wiring efficiency.

The invention relates to the technical field of liquid nitrogen refrigeration, in particular to a liquid nitrogen refrigeration-based ultralow-temperature precise constant-temperature device which comprises a liquid nitrogen tank and a constant-temperature tank, an inner box is arranged in the constant-temperature tank, an outer ring body is arranged on the outer surface of the constant-temperature tank, an air suction assembly is arranged on the outer surface of the outer ring body, and an exhaust assembly is arranged on the outer surface of the constant-temperature tank. A nitrogen tank is arranged at the end, away from the constant-temperature tank, of the exhaust assembly, a butt-joint pipe is arranged between the liquid nitrogen tank and the constant-temperature tank, and a butt-joint assembly is arranged on the outer surface of the butt-joint pipe. Compared with the prior art, the constant-temperature tank and the outer ring body are communicated through the air exhaust assembly, a motor is used for driving a rotary disc to rotate to drive a shifting block to pull a strip-shaped plate to move up and down, the strip-shaped plate drives a first one-way valve to move up and down to extrude or stretch the upper part and the lower part of a corrugated pipe, and the outer ring body is filled with nitrogen in the constant-temperature tank; and the effect of cooling the outer surface of the constant-temperature tank is achieved, the gasification speed of liquid nitrogen is reduced, and the energy-saving effect is achieved.

The utility model discloses a kind of shutter equipment of strong light self-adaptive processing, it is related to shutter system application field, including bearing plate, the top of bearing plate is rotatably connected with movable ring, the outside of movable ring is provided with outer gear ring, the inside of movable ring is provided with inner gear ring, the side of movable ring is rotatably connected with transmission gear, transmission gear and outer gear ring are mutually engaged, transmission gear is connected with driving device, the top of bearing plate is provided with shutter assembly.The utility model can avoid mutual impact between curtain by setting multiple shutter assembly stacks, reduce the noise when shutter system works, four groups of shutter assembly are stacked from top to bottom distribution, four groups of curtain in four groups of shutter assembly are evenly distributed with exposure hole as center, curtain can achieve the purpose of plugging exposure hole when moving, and because multiple curtain is at different horizontal height, multiple curtain will not impact each other, reduce the generation of mechanical noise when shutter system works.

The utility model discloses a device for preventing laboratory furnace doors from derailing, which comprises a lifting furnace door, rollers, tracks and track limiting seats, the rollers are mounted on the outer sides of four end corners of the lifting furnace door, the tracks are arranged on two sides of the lifting furnace door, and the rollers at the four end corners of the lifting furnace door are positioned on the tracks and are in rolling connection with the tracks. Track limiting seats are fixed to the top ends of the two tracks through bolts. The rail limiting seats are fixed to the top ends of the rails through bolts, the protection grooves larger than the rolling wheels are formed in the bottom ends of the limiting seats, the rolling wheels can be blocked, accordingly, the lifting furnace door is blocked, the situation that the rolling wheels derail is avoided, and safety is high; the anti-collision plate is installed through the spring, and the inner end and the outer end of the anti-collision plate are both provided with the protective layers made of rubber materials, so that a buffering effect can be achieved for the rolling wheel, noise is reduced, and the service life is prolonged.

The cleaning device for brake shoe machining comprises a processing box, a partition plate is fixedly installed in the middle of the processing box, a clamping driving assembly is installed in the middle of the upper end face of the partition plate, supporting seats are fixedly installed on the portions, located on the two sides of the clamping driving assembly, of the upper end face of the partition plate, and punching assemblies are installed on the two supporting seats. A cleaning assembly facilitating cleaning and recycling of metal scraps is installed below the partition plate. The utility model relates to the technical field of brake shoe machining. When the punching device is used for punching a brake shoe body, waste chips fall into an arc-shaped material receiving opening through a baffle II and then fall onto a material guide plate, two cams are driven to rotate by starting a driving motor I, a sliding rod is circularly pushed and pulled to move up and down in a sleeve in a reciprocating manner through a rocker while the two cams rotate, a spring deforms, and the punching device is used for punching the brake shoe body. And therefore, the waste scraps on the material guide plate are shaken off into the material collecting drawer to be collected, and time and labor are saved.

The utility model discloses a multifunctional training device which is provided with side edge stand columns, a plurality of transverse rods and a top beam, a pull-up stretching frame is arranged on the top beam, and a grabbing transverse rod extending towards the rear side is arranged on the pull-up stretching frame. Sliding blocks are fixed to the side edge stand columns, the inner sides of the sliding blocks achieve avoiding of the transverse rods through avoiding grooves, and rolling pieces in sliding fit with the side edge stand columns are arranged in the sliding blocks. Positioning holes are formed in the side edge stand columns, and positioning pins are arranged on the sliding blocks; a sliding block is arranged on the side stand column, a guide wheel set is arranged on the rear side of the sliding block in a hinged mode, a traction rope is wound on the guide wheel set, the two ends of the traction rope are connected with a hand puller and a resistance device respectively, and the resistance device is arranged at the bottom of the side stand column and connected with a control module. Therefore, different force application heights can be adapted; the control module and the resistor are arranged at the bottom of the side stand column, so that the bottom space is effectively utilized.

The utility model belongs to the field of solid waste treatment equipment, and particularly relates to a high-pressure forming solid waste compact fuel device which comprises a base, a vertical plate fixedly mounted at the top of the base, a top plate fixedly mounted at the top of the vertical plate, a forming shell fixedly mounted at the top of the base, and an upper extrusion plate arranged above the forming shell. A guide mechanism is arranged between the upper extrusion plate and the top plate, a mounting plate is mounted on one side of the upper extrusion plate through a detachable structure, a hydraulic cylinder is fixedly mounted on one side of the mounting plate, an output shaft of the hydraulic cylinder penetrates through the mounting plate and is fixedly provided with a side extrusion plate, and a limiting mechanism is arranged between the side extrusion plate and the mounting plate. And blocking mechanisms are arranged at the bottoms of the side extrusion plates. The solid waste compact fuel extrusion forming device is reasonable in design, solid waste compact fuel can be extruded in the horizontal direction and the vertical direction through movement of the upper extrusion plate and the side extrusion plate, and the purpose of solid waste compact fuel extrusion forming can be achieved.

The present invention relates to the technical field of unmanned aerial vehicles, and specifically to a machine vision autonomous navigation unmanned aerial vehicle for inspection tasks, comprising a frame, four motors are arranged in a divergent shape along the central axis of the frame, and the output shafts of the four motors are fixedly connected to blades, a four-in-one electric regulator is fixedly connected to the inside of the frame and is respectively connected to the four motor circuits, a flight control unit is fixedly connected to the top of the four-in-one electric regulator, an autonomous navigation module for controlling the flight control unit is fixedly connected to the inside of the frame, a high-definition camera is arranged inside the frame, a visual module for cooperating with the high-definition camera is fixedly connected to the inside of the frame, a connecting seat fixedly connected to the high-definition camera is arranged inside the frame, a support connected to the frame is arranged inside the connecting seat, an oil shell filled with lubricating oil is arranged inside the support, and a shock-absorbing component for buffering the connecting seat is arranged on the outer surface of the oil shell.

The invention discloses a rotary vane type aerodynamic booster, which belongs to the technical field of fluid machinery and comprises a fixing system, a vertical rotating system, a horizontal rotating system, a synchronous transmission system, a disc system, an upper shell system and a lower shell system. The fixing system is used for overall fixing; the synchronous transmission system is meshed with the first bevel gear through the second bevel gear, and the oblique gear is meshed with the special-shaped gear of the horizontal rotating body, so that the vertical rotating system and the horizontal rotating system synchronously rotate at a fixed proportion, and the blocking effect on an inlet is small; meanwhile, the vertical rotating system and the horizontal rotating system do uniform circular motion along respective rotating shafts, and a periodic extrusion space is formed between the two systems, so that higher pressure is generated in the space between the vertical rotating system and the horizontal rotating system, and higher aerodynamic force is generated.

The utility model relates to the technical field of protection supports, in particular to a roadway mining safety protection support which comprises an installation base, a vertical positioning block is fixedly installed on the top of the installation base, an installation clamping groove and a receding connecting groove are formed in the vertical positioning block, and a lifting adjusting plate is installed in the installation clamping groove in a sliding mode. The lifting adjusting plate is fixedly connected with the vertical positioning block through a self-positioning type pushing and lifting adjusting assembly, an arc-shaped supporting block is fixedly installed at the top of the lifting adjusting plate, an arc-shaped penetrating groove is formed in the arc-shaped supporting block, an arc-shaped protection extending plate is slidably clamped in the arc-shaped penetrating groove, and a transverse moving adjusting assembly is installed on the inner wall of the arc-shaped supporting block; the arc-shaped protection extension plate is connected with the transverse movement adjusting assembly; according to the utility model, the top of a roadway can be temporarily supported without moving the whole bracket, the use is more flexible and convenient, and production accidents caused by falling of the lifting adjusting plate can be avoided while the bracket is suitable for supporting roadways with different heights.

This utility model provides a special bearing for wheat straw crushers, belonging to the field of spherical bearing technology. It addresses the problem of excessive oil injection pressure causing deformation of the bearing oil seal and loss of sealing function. The bearing includes a bearing mounting base, an oil injection nozzle, an eccentric sleeve, a bearing set screw, a protective and impact-resistant mechanism, and an oil injection protection mechanism. The oil injection nozzle is fixedly connected above the oil injection connector, which communicates with the interior of the nozzle. The spherical bearing body is embedded inside the bearing mounting base. The eccentric sleeve is fitted onto the front end of the inner ring of the spherical bearing body. The bearing set screw is threaded onto the outside of the eccentric sleeve. The protective and impact-resistant mechanism is located on the outside of the eccentric sleeve. The oil injection protection mechanism is located on the inside of the oil injection connector, thus protecting the bearing oil seal, preventing deformation due to high pressure, ensuring the sealing effect of the oil seal, and improving the overall performance of the bearing.

The present application belongs to the technical field of turnover steel dam gate, and particularly relates to a turnover steel dam gate, which aims to solve the technical problem that when a relatively high water surge impacts on the gate, the impact force will directly act on the dam body, which is easy to cause damage to the dam body, and comprises a steel dam gate assembly, a hydraulic cylinder assembly, a buffer connecting assembly and a displacement adjusting assembly, the steel dam gate is connected with the hydraulic cylinder assembly, the hydraulic cylinder assembly is connected with the buffer connecting assembly, the buffer connecting assembly is connected with the displacement adjusting assembly, and the displacement adjusting assembly is connected with the steel dam gate assembly; in order to reduce the effect of the water surge on the concrete base, when the water surge impacts on the steel dam gate, the force is then transmitted to the concrete base through the hydraulic cylinder assembly, the absorption of the force is then realized through the inner end buffer spring between the hinged sliding block and the extruded sliding block, the impact force on the concrete base is then reduced, and the protection of the concrete base is then realized.

The utility model discloses a charging gun plugging auxiliary support with a buffer structure, and relates to the technical field of charging gun supports, the charging gun plugging auxiliary support comprises a wall-mounted support, the bottom of the wall-mounted support is fixedly connected with a hook, the front side of the wall-mounted support is fixedly connected with a supporting block, and a rotating shaft is inserted in the supporting block. According to the utility model, through the arrangement of the connecting block and the covering plate, when the device is used in a charging state, a worker can rotate the covering plate to cover the placement opening of the wall-mounted bracket, so as to block outdoor rain and snow, thereby effectively preventing a subsequent charging gun from water inflow; the safety of the charging gun in the using process can be effectively improved, a rubber plate and a rubber column are arranged, in the process that the covering plate covers the wall-mounted support containing opening, the sealing effect on the containing opening can be improved through the rubber plate made of rubber, the covering plate can be prevented from being in hard friction with the outer wall of the containing opening in the rotating process, and the service life of the charging gun is prolonged. Therefore, the outer wall of the placing opening is protected.

The utility model provides an explosive filling and metering device which comprises a measuring hopper arranged on a rack and located over a to-be-filled containing device, a fixing frame is arranged on the lower portion of the outer side wall of the measuring hopper, and a screening and blocking mechanism is arranged on the fixing frame and located below a discharging port of the measuring hopper. The screening and material blocking mechanism comprises a material blocking and screening assembly arranged at the bottom of a discharging opening of the measuring hopper in a sliding mode and a driving assembly driving the material blocking and screening assembly to move. According to the utility model, the driving assembly in the material blocking mechanism for screening can drive the material blocking and screening assembly to screen and fill materials falling from the measuring hopper to stop filling operation when the materials reach a preset weight; and the driving assembly drives the material blocking plate to slide along the guide rail so that the falling position and the falling speed of the falling materials can be conveniently and rapidly adjusted, and operation is more convenient and efficient.

The invention discloses an air purifier blowdown system, and belongs to the technical field of compressed air purification treatment.The air purifier blowdown system comprises a base, a C-shaped notch is formed in the base, a blowdown cavity is formed in the base, and the lower end of the blowdown cavity is connected with a blowdown flow channel which is obliquely arranged downwards; the blow-down valve seat is installed on the base, a blow-down channel is formed in the blow-down valve seat in the axis direction, and the blow-down cavity is communicated with the blow-down channel through a blow-down flow channel. The electromagnetic driving mechanism is arranged on the blow-down valve seat and located in the C-shaped notch of the base, the electromagnetic driving mechanism comprises a static iron core, a movable iron core and an electromagnetic coil, the static iron core, the movable iron core and the electromagnetic coil are all arranged along the axis of the blow-down valve seat, and the electromagnetic coil is arranged on the outer side of the static iron core and the outer side of the movable iron core; the movable iron core is arranged on the static iron core in an up-down moving mode.

The invention discloses a steel truss prefabricated concrete superposed beam which comprises a concrete thin plate, a steel web member, a steel upper chord, longitudinal load-bearing steel bars and stirrups. A plurality of longitudinal steel bars are arranged in the concrete thin plate; the stirrup part is anchored in the concrete thin plate; the steel web member is continuously bent; the steel upper chord is reliably connected with the wave crests of the steel web members to form a truss finished product; and wave troughs of the truss finished product piece are anchored in the concrete thin plate. The concrete thin plate and the steel web member truss are anchored to form the composite truss, so that light self weight, high rigidity and simple manufacturing of the member can be realized, industrial production of the member is realized, and the production efficiency of the member is improved.

The application relates to a cleaning device. The cleaning device comprises a frame, a cleaning assembly, a hand lever assembly, a water injection assembly and a switch assembly. The cleaning assembly comprises a cleaning roller which is rotatably connected to the frame. The hand lever assembly is connected to one end of the frame which is away from the cleaning assembly. The water injection assembly comprises a water tank and a hose. The water tank is mounted on the hand lever assembly. One end of the hose is connected to the water tank. The hose is partially arranged in the hand lever assembly and partially arranged in the frame, so that one end of the hose which is away from the water tank can inject water into the cleaning roller. The switch assembly is at least partially mounted on the hand lever assembly to realize the conduction or blockage of the hose.

The present invention relates to the field of medical equipment and discloses an intelligent insulin pen injection guidance device; comprising a portable tray; the front side of the upper end surface of the portable tray is provided with an insulin pen insertion slot, an article placement slot, a utensil placement slot, an alcohol placement slot and a detergent placement slot in sequence from left to right; the rear side of the upper end surface of the portable tray is provided with an insulin pen injection guidance area, a medical waste placement area and a medical sharps placement area in sequence from left to right; on the one hand, through the setting of the insulin pen insertion slot, the article placement slot, the utensil placement slot, the alcohol placement slot, the detergent placement slot, the medical waste placement area and the medical sharps placement area, the injection supplies required for insulin pen injection can be classified and stored; on the other hand, through the setting of the insulin pen injection guidance area, during the process of insulin pen injection, injection guidance can be given to trainee nurses, new nurses, non-endocrinology nurses, patients, etc. in real time.