58results about How to "Easy to blow away" patented technology

The invention relates to a stepped type cross flow cutting multi-roller threshing separating and cleaning device. The device comprises a threshing separating system and a cleaning system. The threshing separating system comprises a flow cutting roller, two transversally-arranged axial flow rollers, concave plate sieves, top covers, a straw crushing device and transition plates among the concave plate sieves, wherein the concave plate sieves and the top covers correspond to the three threshing rollers. The cleaning system comprises a sliding plate, a shaking plate, a vibrating screen, a fan, a grain conveying auger and a residue auger. The axes of the three rollers are not on the same horizontal plane and are in a stepped type, materials threshed from a front threshing chamber can be thrown to a rear threshing chamber along the tangent line conveniently, the transition position between the threshing chambers is not prone to being blocked, the bottoms of the three concave plate sieves are on the same line, an included angle is formed between each concave plate sieve and the horizontal line, and therefore it is guaranteed that the distances from the shaking plate additionally arranged on the cleaning device to the concave plate sieves are the same; a second cross shaft flow roller on one side of a straw outlet is shorter than a first cross shaft flow roller on one side of the straw outlet, the straw outlet is deviated to the middle, and accordingly it is guaranteed that straw discharged from the straw crushing device cannot be thrown to crops which are not harvested and can be uniformly thrown and scattered in the full area. The device can meet the harvest requirement for a large feed quantity of the crops, is high in harvest efficiency and threshing separating capacity, little in cleaning and screening loss and high in cleaning and screening efficiency.

The invention relates to an anti-icing and deicing device and method for wings and emages of a turbo-prop aircraft, the device comprises a system close loop, a TKS fluid reservoir heating loop, an anti-icing and deicing heat transfer loop heat pipe, a distributed loop heat pipe and a TKS deicing mechanism, wherein the system close loop, the TKS fluid reservoir heating loop and a heat transfer loopshare a set of heat transfer evaporator (1), in an anti-icing state, the TKS fluid reservoir heating loop, the anti-icing and deicing heat transfer loop heat pipe and the distributed loop heat pipe work; in a deicing state, the TKS deicing mechanism works. Compared with the prior art, the TKS system deicing efficiency is improved greatly, the icing phenomena of the wings and the emages are reduced, the flight stability of the aircraft is ensured, and the system safety is reliable; waste heat of an exhaust pipe is taken as a heat source, and the energy comprehensive utilization ratio of a single turbo-prop aircraft is improved.

The invention discloses a method for a somatosensory vehicle to carry an object, and a somatosensory vehicle. The method for the somatosensory vehicle to carry the object comprises the following steps: obtaining control signals, and entering an object carrying mode; the somatosensory vehicle starting self-balance at a zero-load state; when the somatosensory vehicle detects a load, shooting an image of the object and sensing the image to a cloud end; obtaining object feature information from the cloud end; according to the object feature information, calculating a safe driving speed; and starting operation of the somatosensory vehicle. By use of the method provided by the invention, the somatosensory vehicle can safely and reliably carry the object without changing the circuit and the structure of a conventional somatosensory vehicle.

The invention relates to a blowing and sucking machine which comprises a body, a motor located in the body, a fan driven by the motor to rotate, a suction pipe connected with the body and provided with an air suction port communicating with the external environment, a blowing pipe connected with the body and provided with an air blowing port communicating with the external environment and a blowing and sucking conversion mechanism. The blowing and sucking conversion mechanism selectively controls the blowing and sucking machine to work in a blowing mode or a sucking mode. In the blowing mode, air flows in through the air suction port, is driven by the fan to form air flow and is blown out from the air blowing port through the blowing pipe; and in the sucking mode, air flows in the suction pipe through the air suction port and is driven by the fan to form air flow. At least part of the air blowing port is stored in the suction pipe. The blowing and sucking machine further comprises a supplementing air inflow unit, so that in the blowing mode, air flows in the blowing and sucking machine through the supplementing air inflow unit and is blown out through the air blowing port, and therefore air passes through the air suction port.

The invention belongs to the technical field of breaking and sorting devices, and particularly relates to a scrapped vehicle breaking and sorting device. The scrapped vehicle breaking and sorting device comprises a shell, a feeding hopper, a breaking roller, a breaking stand column, a draught fan, a grinding module, and a strong magnet; a set of V-shaped protrusions are arranged on the plane of the upper end of the right side of the breaking stand column, a grinding block is fixedly connected to each connecting support on the chain, a breaking object is ground into small particles, the grinding efficiency is high, a set of rectangular through grooves are horizontally formed in the arc face on the lower end of the right side of the breaking stand column, rapid separation of metal and plastic can be achieved, because the breaking object rolls along the arc face, the breaking object can be evenly scattered, metal and plastic are better in separation effect, the cylindrical strong magnet is embedded on the right side wall of the lower end of the shell, small metal included in the plastic can be attracted by the strong magnet, and the metal and the plastic can be more thoroughly separated.

The invention provides a straightening machine integrating the cleaning and heating functions and a using method of the straightening machine. The straightening machine comprises a straightening chamber, supporting legs and a controller; clamping devices are arranged in the straightening chamber, air cylinders are arranged on the clamping devices, and temperature and humidity sensors are arrangedon the clamping devices; hot fans are arranged on the positions, right facing a profile, of the top and the bottom of the straightening chamber, and the upper part and the lower part of the left sidewall and the upper part and the lower part of the right side wall of the straightening chamber are connected with circulating ventilation systems correspondingly; the circulating ventilation systems comprise exhaust fans fixedly connected with the side walls of the straightening chamber and air outlets II arranged at the top and the bottom of the inner side of the straightening chamber correspondingly, filters are arranged in the exhaust fans, and the exhaust fans are connected with the air outlets II of the inner side of the straightening chamber through exhaust pipes outside the straightening chamber; and the air cylinders, the hot fans, hydraulic cylinders, the temperature and humidity sensors and humidifiers are electrically connected with the controller correspondingly. According to the straightening machine, dust deposited on the surface of the profile can be cleared, and the profile can be preheated, so that the profile has a good straightening effect, the automation degree of the straightening machine is improved, and the labor intensity of workers is reduced.

The invention discloses high-W-content Ni-based amorphous alloy and a preparation method thereof. The amorphous alloy comprises the following components by atom fractions: 60%-69% of Ni, 17%-22% of W, 0%-8% of Nb and 13.5% of B. The preparation method comprises the following main steps: proportioning and evenly mixing original powder according to the components; shaping by pressing and pre-sintering consolidation; preparing a master alloy cast ingot by adopting vacuum electric arc melting; and preparing amorphous alloy strips by virtue of a vacuum melt spinning machine. The amorphous alloy disclosed by the invention is relatively simple in components, free of precious metal components, and relatively low in cost, and still has relatively high crystallization temperature and microhardness; the crystallization temperature of the crystal is 782-851K; the microhardness is 8.5-11.2GPa; the amorphous alloy has wide application prospect in friction and corrosion resistant materials; electric arc smelting is carried out by adopting a powder pre-sintering body; the energy consumption is lowered; and the prepared high-W-content Ni-based amorphous alloy has the advantages of high crystallization temperature, good heat stability, high hardness, simple components, good controllability, low cost and the like, and has wide application prospect.

The invention discloses a laser welding shielding gas nozzle with a defocusing amount positioning function. The laser welding shielding gas nozzle with the defocusing amount positioning function is characterized in that a mounting base comprises a connecting plate for connecting with a welding head and a first cylinder connected with the connecting plate as a whole; the connecting plate is provided with a round hole for allowing laser too pass through; the round hole and the first cylinder are the same in inner diameter, and are coaxial; an air nozzle joint is formed in the side edge of the first cylinder; a main nozzle comprises a second cylinder connected with the first cylinder, and a third cylinder connected with a nozzle module; the inner diameter of the second cylinder is larger than the inner diameter of the third cylinder; the second cylinder is connected with the third cylinder through a conical cylinder; the second cylinder and the second cylinder are coaxial; and the nozzle module is one of a nozzle or a coaxial tip. The laser welding shielding gas nozzle can be replaced as a coaxial measurement tip for positioning a defocusing amount; and meanwhile, a measuring staff is on the side body of the nozzle for precisely measuring a distance value of the defocusing amount, so that the problem of weak measurement and positioning of the defocusing amount is solved, meanwhile, a TCP point is convenient to built, and the welding process is convenient to perform.

The invention discloses a steel plate machining device for producing angle steel. The steel plate machining device comprises a supporting table, a motor and a cutting blade, and is characterized in that a protective cover is fixedly arranged at the top of the supporting table, a workbench is fixedly arranged at the position, at the top of the supporting table, in the protective cover, a cutting groove is formed in the workbench, a first electric cylinder is vertically and fixedly arranged at the inner top of the protective cover, the motor is horizontally and fixedly arranged at the bottom ofa piston rod of the first electric cylinder, the cutting blade is vertically and fixedly connected to the output end of the motor, the cutting blade corresponds to the cutting groove, a steel plate tobe machined is horizontally arranged at the top of the workbench, the steel plate moves forwards through a pushing mechanism, a groove consistent with the bending angle of the angle steel is formed in the top of the workbench, and punching grooves corresponding to holes in the angle steel in position are formed in the positions, at the top of the workbench, of the two sides of the groove. According to the steel plate machining device for producing the angle steel, the steel plate can be continuously machined, angle steel forming is fast, the occupied space of the device is small, and the working efficiency is high.

The invention relates to the field of machinery, specifically to a lift. A lift with a self-cleaning lift hall mechanical electrical device comprises a lift; the lift comprises a lift control system for controlling operation of the lift, and a lift car door opening machine; a cleaning device is arranged on the lift car door opening machine and comprises a wind blowing machine and a wind absorbingmachine; the wind blowing machine and the wind absorbing machine are positioned at the two ends, parallel to a door plate of a lift car door, of the lift car door opening machine correspondingly; an air outlet of the wind blowing machine and an air outlet of the wind absorbing machine are aligned with a hall door mechanical transmission device; the cleaning device controls operation through a switch control module; the switch control module is connected with a micro-processor system; the micro-processor is connected with a lift control system; the air outlet of the wind absorbing machine is connected with an air filtering net bag through a ventilation pipe. When the lift system judges that the lift is in a standby unmanned state, the lift is controlled to stop on each floor layer by layerfrom the highest layer to the bottom, and the cleaning device performs automatic cleaning on the hall door mechanical transmission device of each floor.

The invention discloses a municipal engineering road crack filling device capable of filling according to crack radian. The municipal engineering road crack filling device capable of filling accordingto the crack radian comprises a moving plate, a heating plate motor and a first connecting rod; a material mixing box is fixedly mounted above the moving plate; an air placing chamber is connected tothe right side of the material mixing box; a heating plate is mounted in the internal wall of the material mixing box; a motor is fixedly mounted above the air placing chamber; a material dischargingpipe is mounted under the material mixing box; a valve is mounted under the material discharging pipe; a connecting hole is formed in the surface of the moving plate; and a fifth spring is fixed between a first rotating shaft and a fixing sleeve. According to the municipal engineering road crack filling device capable of filling according to the crack radian, by arranging a locating rolling sheetand the material discharging pipe, the locating rolling sheet can roll in a crack under the pushing of the moving plate; and meanwhile, under cooperation of the material discharging pipe above the locating rolling sheet, slurry is discharged to a material stopping plate and flows into the crack to enable the slurry to be conveniently filled with the rolling of the locating rolling sheet; and therefore, the filling effect of the device is improved.

The invention discloses an anti-splashing handheld cutting machine, and relates to the technical field of cutting machining. The problems that an existing handheld cutting machine generates spark splashing, operation safety is not facilitated, and sweeps are inconvenient to collect in time are solved. According to the scheme, the anti-splashing handheld cutting machine comprises a placing plate, aguide rod is fixedly connected to the right side of the top of the placing plate, a movable block is movably arranged outside the guide rod in a sleeving mode, a supporting rod is fixedly connected to the left side of the movable block, a first spring is fixedly connected to the supporting rod, a top plate fixedly connected with the top end of the guide rod is fixedly connected to the top end ofthe first spring, a supporting plate is fixedly connected to the left end of the supporting rod, and a pressing plate is arranged at the top of the supporting plate in a sliding manner. According to the anti-splashing handheld cutting machine, protection during cutting is facilitated, spark splashing is avoided, moving cutting is facilitated, meanwhile, sweeps generated during cutting are blown away conveniently, the sweeps are collected in time, air cooling heat dissipation is conducted on a cutting wheel, and the safety of the cutting wheel is facilitated.

The invention relates to a milling machine for machining graphite insulation barrels. Cushion plates A are fixedly arranged on the left and right sides of a platform module; guide rails A are fixedlyarranged on the cushion plates A; sliding modules A are slidingly arranged on the guide rails A; graphite columns are placed on the upper surface of a planar tooth disc; support arms are fixedly arranged on the left and right side walls of a fixed platform A; a connecting plate B is fixedly arranged between the upper parts of the support arms on the left and right sides; guide rails B are fixedlyarranged on the front side walls of the support arms; lifting modules A are arranged at the front parts of the guide rails B; sliding modules B are matched at the front parts of guide rails C, and areprovided with lifting modules B; sliding modules C are arranged on the front sides of the lower parts of the lifting modules B; and cutters A are fixedly arranged at the lower ends of the sliding modules C. The milling machine has the beneficial effects of longer travel of a machine tool, lower cost of the machine tool and reduction of the production cost.

The invention discloses waste metal screening equipment, and relates to the technical field of metal treatment. The waste metal screening equipment aims at solving the problems that existing screeningequipment is inconvenient to quickly screen materials and pour out screened materials, and meanwhile light impurities are inconvenient to remove. According to the scheme, the waste metal screening equipment comprises a treatment box, a crushing mechanism is arranged in the treatment box, supporting plates are fixedly connected to two sides of the treatment box, a screening mechanism is movably arranged in the supporting plates in a sleeved mode, a steering mechanism is fixedly connected to the left side of the screening mechanism, an air blowing mechanism is fixedly connected to the supporting plate located on the right side, and an extrusion mechanism fixedly connected with the supporting plates is arranged below the air blowing mechanism. According to the waste metal screening equipment, vibration screening is facilitated, the screening efficiency is improved, moreover, the screened materials can be conveniently poured down, rapid discharging is facilitated, some light impurities ona filter screen can be conveniently blown away, and the cleaning effect is improved.

The invention discloses an air-intake heat dissipation and dust collection device for computer cases. The air-intake heat dissipation and dust collection device comprises an air inlet hole and a heat dissipation component. The inner side of the air inlet hole is provided with an inner thread. The heat dissipation component comprises an air inlet tube, a centrifugal fan and a tungsten electrode needle. The outer surface of the air inlet tube is provided with an outer thread matched with the inner thread of the air inlet hole. The centrifugal fan is fixed at one end of the air inlet tube. The tungsten electrode needle is connected with a fixing base. The fixing base is fixed at one end of the air inlet tube through a support rod and is connected with a power supply line. The air-intake heat dissipation and dust collection device is simple and compact in structure and applicable to most computer cases; heat dissipation and dust collection efficiency is high, and production and purchase costs are low; the device is also applicable to other equipment in need of heat dissipation and dust collection.

The invention discloses a bearing pedestal deburring device. The bearing pedestal deburring device comprises a workbench. The workbench is provided with a rack. An air cylinder is installed in the middle of the top of the rack. The output end of the air cylinder penetrates the top of the rack to be fixedly connected with a guide plate. The two sides of the guide plate are symmetrically provided with guide rails. The two ends of the guide plate are fixedly connected with sliding sleeves matched with the guide rails. The sides, far away from the guide plate, of the sliding sleeves are fixedly connected with installation plates. The installation plates are provided with drive motors. Output shafts of the drive motors penetrate the corresponding installation plates to be connected with rotating shafts through couplers. The lower ends of the rotating shafts are fixedly connected with brush plates. The bottoms of the brush plates are provided with brushes, and the outer sides of the brushesare covered with protective gauze covers. A hanger plate is arranged between the bottoms of the two guide rails. The bottom of the hanger plate is provided with a draught fan. The bottom of the draught fan is provided with two opposite air outlets. The parts, under the brush plates, of the workbench are provided with bearing pedestal positioning mechanisms. The bearing pedestal deburring device isgood in deburring effect, the labor intensity of an operator is lowered, and the working efficiency is improved.

The invention discloses a rock wool fiberizing centrifuge. The rock wool fiberizing centrifuge comprises a frame, a plurality of centrifuging roller assemblies arranged on the frame, a split type gluespraying ring arranged around the centrifuging roller assemblies, and a glue supply mechanism for supplying glue to the centrifuging roller assemblies and the split type glue spraying ring; every centrifuging roller assembly comprises a motor, a shaft coupling, a connecting tube and a roller body; the output shaft of the motor is a hollow shaft penetrating through two ends of the motor; the output shaft of the motor is fixedly connected with the roller body through the shaft coupling; the connecting tube is located in the shaft coupling, and two ends of the connecting tube are connected withthe output shaft of the motor and the roller body correspondingly; a glue spraying tube communicated with the connecting tube is arranged in the roller body; and the output shaft of the motor, the connecting tube and the glue spraying tube in the roller body form the glue channel of the centrifuging roller assembly. The defects of large occupied space in transmission and easy slipping of an original belt are fundamentally overcome, the size of the rock wool fiberizing centrifuge is reduced, and the yield of rock wool is increased.

The invention relates to a defrosting-free device of a freezing system. The freezing system is provided with an evaporator which is provided with an inlet and an outlet for air to flow. The defrosting-free device comprises a dissociation unit and a fan unit, wherein the dissociation unit is adjacent to the inlet of the evaporator and is used for dissociating water molecules in the air; and the fan unit and the dissociation unit are arranged at intervals to ensure that the dissociated water molecules can be blown away. In the invention, the water molecules in the area at the inlet of the evaporator are dissociated into the nanometer level through the dissociation unit so that frost ice crystals on the evaporator are very fine, and the frost ice crystals are blown away by the fan unit so as to greatly reduce the frost on the evaporator. The invention can not only effectively avoid subsequent defrosting operation, but also can save the time and the electric quantity consumed for the defrosting operation.

The invention discloses a garden building dehumidification and dust removal device, and belongs to the field of garden buildings. The garden building dehumidification and dust removal device comprisesa moving vehicle, a lifting column is arranged on the moving vehicle, a horizontal telescopic rod is arranged on the side wall of the bottom end of the lifting column, a vertical telescopic rod is arranged on the horizontal telescopic rod, a scraper knife is detachably installed on the vertical telescopic rod, a lifting column is arranged at the top end of the lifting column, the upper surface ofthe lifting column is connected with the center of a double-head telescopic rod, a rotating motor is installed at one end of the double-head telescopic rod, a cleaning brush head is installed on an output shaft of the rotating motor, a draught fan and a dryer are installed at the other end of the double-head telescopic rod, a water tank is arranged on the moving vehicle and provided with a waterpumping pipe, the outlet end of the water pumping pipe communicates with one end of a connecting hose, and a water spraying disc is arranged at the other end of the connecting hose. According to the garden building dehumidification and dust removal device, moss and the like generated on the bottom end ground and the side wall of the bottom surface of a garden building can be shoveled away conveniently, dust, dirt and the like on supporting columns of the garden building can be removed easily, the garden building is prevented from being corroded by water vapor, the safety and quality of the garden building can be guaranteed easily, and the attractiveness of the garden building is guaranteed.

The invention relates to a dialogue robot based on depth learning, and relates to the technical field of robots. The dialogue robot comprises a hollow base, the hollow base is provided with a straightgroove, the hollow base is provided with a storage battery, a supporting bearing, an electric push rod and a driving motor, the supporting bearing is provided with a U-shaped plate, the U-shaped plate is provided with a first gear ring, the electric push rod is provided with an L-shaped gear plate, the L-shaped gear plate is connected with the first gear ring, the driving motor is provided with athird gear ring, the third gear ring is provided with a second gear ring, the second gear ring and the U-shaped plate are provided with a rotating shaft, the rotating shaft is provided with rollers,the hollow base is provided with a sleeve, the sleeve is provided with a movable sliding cylinder, the sleeve is provided with an adjusting structure, the movable sliding cylinder is provided with a head, the head is provided with a switch, a display screen, a camera and a microphone, the head is provided with an installation cavity, the installation cavity is provided with an air inlet hole and an air outlet hole, the installation cavity is provided with a fan, and the bottom of the installation cavity is fixedly connected with a storage module, a loudspeaker, a teaching module, an installation cavity, a wireless module, a learning module and an intelligent control module. The dialogue robot is more convenient to move during use, and the use enthusiasm of children is improved.

The invention discloses an intelligent monitoring equipment for power grid equipment. The intelligent monitoring equipment structurally comprises a monitoring device, a monitoring panel, a displayer, a rotary knob and a control button, the rear end of the monitoring panel is fixedly connected to the center surface of the front end of the monitoring device in an embedded mode, and the rear end of the displayer is connected to the interior of the upper portion of the front end of the monitoring panel in an embedded mode; the rear end of the rotary knob is movably connected to the left side of the lower portion of the front end of the monitoring panel, and the rear end of the control button is movably clamped to the right side of the lower portion of the front end of the monitoring panel. According to the intelligent monitoring equipment, a force-bearing block is squeezed when a plastic bag sleeves the surface of the device so that a connecting block of a shearing device pulls a connecting rod to open the shearing mechanism, and the plastic bag is pierced once; due to the fact that the pressure is reduced, the shearing mechanism shrinks, then a shearing knife at the side end of a crushing device shears the plastic bag under the elastic force action of a torsional spring, and a blade embedded in the front end of the shearing knife generates high pressure on the plastic bag in the shearing process through an extremely-thin-sheet-shaped body structure of the blade, so that the plastic bag is more easily sheared to be broken; the monitoring device is prevented from being sealed by the plastic bag and generating abnormal high temperature inside.

The invention discloses a preparation method of stain-resisting fiber for weaving outdoor hanging chairs. The preparation method comprises the following operation steps of (1) soaking sisal hemp fiberin a benzoyl peroxide solution, then taking out the sisal hemp fiber, soaking the sisal hemp fiber into boiling water completely, heating with soft fire, then adding a hybrid graft monomer into the boiling water, so as to prepare modified sisal hemp fiber; (2) adding polymer resin particles into an open mill, fusing the polymer resin particles completely, adding modified sisal hemp fiber with 25-30% weight of the polymer resin particles, after overturning and blending for 5-6 minutes, so as to prepare a polymer composite material filled with modified sisal hemp fiber; and (3) fusing the prepared polymer composite material filled with modified sisal hemp fiber and then spinning, so as to prepare the stain-resisting fiber for weaving outdoor hanging chairs. The stain-resisting fiber for weaving outdoor hanging chairs prepared by the method has excellent mechanical properties, particularly has high antifouling performance, and can better prevent stain from attaching to the surface.

The invention discloses a novel round part fixture. The bottom end of a vertical column is provided with a flange, the top end of the vertical column is provided with a rotating air cylinder seat, a rotating air cylinder is arranged between the rotating air cylinder seat and an air cylinder seat, the air cylinder seat is provided with a first fixture seat and a second fixture seat, the edge of thetop surface of the first fixture seat and the edge of the top surface of the second fixture seat are both provided with three grooves, each groove is internally provided with a sliding block, each sliding block is provided with a saw-tooth bottom plate, each saw-tooth bottom plate is provided with a saw-tooth upper plate, each saw-tooth upper plate is provided with a clamping head, screw rods areinserted into spring seats correspondingly, any screw rod is provided with a spring in a sleeved manner, a springboard is of a Y-shaped structure, the springboard is placed on the second fixture seat, and three ends of the springboard are installed on the bottoms of the three screw rods correspondingly. By means of the novel round part fixture, workpieces of different sizes are conveniently machined, the rotating air cylinder seat is connected with an air pipe, foreign matters on a working table surface are conveniently blown away at any time, the working table surface is kept clean, and theservice life of the fixture is maintained.

The invention discloses a rubber raw material transportation device. The device structurally comprises directional wheels, a ground gripping fixing device, universal wheels, an armrest frame and a transportation base. The directional wheels are fixed to two ends of one side of the transportation base correspondingly. The universal wheels are mounted at the two ends of the other side. The ground gripping fixing device is arranged between the universal wheels and the directional wheels. Compared with the prior art, the beneficial effects of the device are that before a rubber raw material is placed on the transportation base, through a lifting ground attaching assembly and a suction cup grabbing and attaching mechanism, bottom holes caused by the universal wheels arranged on the transportation base are made up; through the lifting ground attaching assembly and the suction cup grabbing mechanism, the ground can be grabbed, the transportation base is prevented from deviating, and the situation that one end of the rubber raw material is warped upwards and the light end of the rubber raw material is pressed downwards due to a fact that the rubber raw material is placed at the improper position of the transportation base for the first time is effectively prevented; and the rubber raw material can be prevented from slipping on a floor and being damaged, and the rubber raw material is well protected.

The invention provides a multifunctional keyboard. The multifunctional keyboard comprises a basic shell and a supporting plate formed on the lower portion of the basic shell. A circuit film is arranged on the supporting plate; button holes are formed above all switch knots of the circuit film, elastic bodies making contact with the switch knots of the circuit film are arranged at the bottoms of the button holes, and when the elastic bodies pressurize the switch knots, the switch knots are communicated; a basic pillar which extends upwards along the axes of the button holes is fixed to the supporting plate, and a sliding piston is fixed to the basic pillar and extends into a sliding cavity inside a button cap matched with the corresponding button hole; the lower ends of the button caps makecontact with the elastic bodies, and the lower ends of the sliding cavities of the button caps are communicated with the exterior through internal space of the basic shell; wall holes are formed in the parts, close to the upper surfaces of the button caps, of the side walls of the button caps. During usage, dust stacking on the surface of the keyboard can be restrained, meanwhile, and finger perspiring can be restrained so that the keyboard can be kept in a clean state.

The invention provides a clamping device for half-side pipe laser cutting. The clamping device for half-side pipe laser cutting comprises a fixing plate, and a positioning plate, a stop block and a pressing and blocking mechanism which are arranged on the fixing plate, the positioning plate is an arc-shaped plate matched with the diameter of an inner hole of a half-side pipe to be cut, and the half-side pipe to be cut is arranged outside the positioning plate in a covering manner during assembly; and the stop block is arranged at one end of the positioning plate and used for stopping the end wall of an assembled half-side pipe. The pressing and blocking mechanism is arranged on the radial outer side of the positioning plate, a pressing block capable of stretching out and drawing back in the radial direction relative to the assembled half-side pipe is arranged on the pressing and blocking mechanism, and the pressing block is used for pressing the flange edge on the radial outer side of a half-side pipe when stretching out. An arc-shaped positioning plate is arranged to support the interior of the half-side pipe to be cut, and the exterior of the half-side pipe is pressed and limited through the pressing and blocking mechanism and the stop block. According to the clamping device for half-side pipe laser cutting, the structure is simple and reasonable, disassembling and assembling are convenient, the positioning plate is in linear contact with the half-side pipe to be cut, molten slag can be blown away conveniently, cutting quality is guaranteed, positioning is firm, and universality is high.

The invention discloses a grinding device in the processing process of a flange plate. The grinding device comprises a machine body; a bracket is fixedly arranged at the corner position of the outer surface of the lower end of the machine body; a control panel is arranged on the outer surface of the front end of the machine body; a hydraulic box is movably arranged on one side of the machine body;a power supply interface is formed in the other side of the machine body; a fixed plate is fixedly arranged on one side of the outer surface of the upper end of the machine body; a sliding groove isformed in one side, near the machine body, of the fixed plate; and a sliding block is movably arranged in the sliding groove. A series of structures are provided, the device can adjust the grinding position in the use process, can grind the flange plates with different specifications, can prevent scraps generated during grinding from being splashed through a protective plate in the grinding process, avoids damage to operators, can blow away the scraps generated during grinding through gas discharged by an air cylinder after grinding, can prevent the scraps from influencing grinding at the nexttime and can optimize the use process.